CN115252293A - A liftable seat, lift machine and wheelchair - Google Patents

Abstract

The invention discloses a liftable seat, a lift machine and a wheelchair. The liftable seat comprises a base, a first support rod and a second support rod nested in a nest, a bearing plate and a first driving mechanism. The base forms There is a first accommodating cavity, the first supporting rod is arranged on the base, the first supporting rod and/or the second supporting rod form a second accommodating cavity, the bearing plate is connected with the second supporting rod, and the first driving mechanism is accommodated in the second accommodating cavity. In the first accommodating cavity and/or the second accommodating cavity, the first drive mechanism is connected or abutted with the second support rod, and is used to drive the second support rod to move up and down relative to the base, thereby driving the carrying plate to move up and down, so that the seat can be moved up and down. The user on the carrier plate can realize the up and down movement of the body's center of gravity, which is convenient for the user to go to bed alone, take high objects, etc., and can play a waterproof role on the first driving mechanism, so that the user can sit on the liftable seat for washing , bathing and other daily activities to further facilitate the user's daily use.

Description

Liftable seat, lifting machine and wheelchair

technical field

The invention relates to the technical field of medical devices, in particular to a liftable seat, a shifting machine and a wheelchair.

Background technique

Lifts, wheelchairs, etc. provide great convenience for the disabled and the elderly with limited mobility. However, at present, shift machines, wheelchairs, etc. generally can only realize forward or backward movement, and their functions are relatively single.

Users often have some difficulties when using lifts and wheelchairs, such as going to bed alone, taking high objects, etc. The seat cushions of ordinary lifts and wheelchairs are relatively low, which makes it difficult for users to do activities that require raising the center of gravity of the body.

Contents of the invention

The invention provides a liftable seat, a shifter and a wheelchair to solve the technical problem in the prior art that it is inconvenient for users to sit on the shifter, wheelchair and other seats to raise the center of gravity of the body.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a liftable seat, including:

The base is formed with a first accommodating cavity;

the first support rod is arranged on the base;

The second support rod is sleeved on the first support rod, and the first support rod and/or the second support rod form a second accommodating cavity;

a carrying plate, connected to the second support rod, for carrying a human body or an object;

The first driving mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, and the first driving mechanism is connected or abutted with the second support rod for driving the second supporting rod. The support rod is lifted relative to the base.

In a specific embodiment, the liftable seat further includes a transmission mechanism, the transmission mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, and the transmission mechanism is respectively connected to the The first driving mechanism is connected with the second support rod.

In a specific embodiment, the first drive mechanism includes a motor, and the motor includes a motor body and an output shaft connected to the motor body, the motor body is accommodated in the first accommodating cavity, and the transmission mechanism A screw rod is included, the screw rod is accommodated in the second accommodating cavity, and the screw rod is respectively connected with the output shaft and the second support rod.

In a specific embodiment, the first drive mechanism includes a motor, and the motor includes a motor body and an output shaft connected to the motor body, the motor body is accommodated in the first accommodating cavity, and the transmission mechanism It includes a gear and a rack, the gear is connected with the output shaft, and the rack is connected with the second support rod.

In a specific embodiment, the first drive mechanism includes a motor, and the motor includes a motor body and an output shaft connected to the motor body, the motor body is accommodated in the first accommodating cavity, and the transmission mechanism It includes a first gear, a second gear and a chain, the first gear is set at the end of the first support bar close to the base, and the second gear is set at the end of the first support bar away from the base One end of the chain is fixedly connected to the first support rod, and the other end of the chain is fixedly connected to the end of the second support rod close to the base via the first gear and the second gear.

In a specific embodiment, the first drive mechanism includes a motor, and the motor includes a motor body and an output shaft connected to the motor body, the motor body is accommodated in the first accommodating cavity, and the transmission mechanism It includes a connecting rope, one end of the connecting rope is connected to the output shaft, the other end of the connecting rope is connected to the end of the second supporting rod close to the base through the end of the first support rod away from the base connect.

In a specific embodiment, the first driving mechanism includes a cylinder, and the cylinder includes a cylinder, a piston, a piston rod and an end cover, and the cylinder is accommodated in the first accommodating cavity and/or the In the second accommodating chamber, the piston is arranged in the cylinder, the piston rod is respectively connected with the piston and the end cap, and the end cap is accommodated in the second accommodating chamber, And it is connected or abutted with the second support rod.

In a specific embodiment, the number of the first support rod, the second support rod, the transmission mechanism and the first drive mechanism is one, and the first drive mechanism includes a motor.

In a specific embodiment, the number of the first support rod, the second support rod, the transmission mechanism and the first drive mechanism is two respectively, the first drive mechanism includes a motor, and the two The motors are arranged in one-to-one correspondence with the two transmission mechanisms, the two first support rods, and the two second support rods; or

The number of the first support rod, the second support rod and the transmission mechanism is two respectively, the number of the first drive mechanism is one, the first drive mechanism includes a motor, and the two transmission mechanisms The two first support rods and the two second support rods are respectively provided in one-to-one correspondence, and the motors are respectively connected to the two transmission mechanisms.

In a specific embodiment, the liftable seat further includes an armrest and a second driving mechanism, the armrest is movably arranged on the bearing plate, and the second driving mechanism is used to drive the armrest relative to the bearing Plate lifting.

In a specific embodiment, the liftable seat further includes a waist suspension mechanism that is foldably arranged on the second support rod and a pedal that is foldably arranged on the base.

In a specific embodiment, the liftable seat further includes a bedpan assembly, the bedpan assembly includes a bedpan and a support frame, the support frame is connected to the second support rod, and the bedpan is arranged on the support frame Above, the carrying plate is formed with a through groove corresponding to the bedpan.

In order to solve the above technical problems, another technical solution adopted by the present invention is to provide a shifting machine, including:

The base is formed with a first accommodating cavity;

the first support rod is arranged on the base;

The second support rod is sheathed on the first support rod, and the first support rod and the second support rod together form a second accommodating cavity;

at least two bearing plates, which are respectively rotatably connected to the second support rod, and are used to carry human bodies or objects;

The first driving mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, the first driving mechanism is connected with the base and the second support rod, and is used to drive the first accommodating cavity The two support rods are raised and lowered relative to the base.

In order to solve the above-mentioned technical problems, another technical solution adopted by the present invention is to provide a wheelchair, comprising:

The base is formed with a first accommodating cavity;

the first support rod is arranged on the base;

The second support rods are respectively sheathed on at least two of the first support rods, and the first support rods and the second support rods together form a second accommodating cavity;

a carrying plate, connected to the second support rod, for carrying a human body or an object;

The first driving mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, and the first driving mechanism is respectively connected with the base and at least two of the second support rods for Driving the second support rod to move up and down relative to the base.

The liftable seat of the present invention comprises a base, a first support rod, a second support rod, a bearing plate and a first driving mechanism, the base is formed with a first accommodating cavity, the first support rod is arranged on the base, and the second support rod covers Set on the first support rod, the first support rod and/or the second support rod form a second accommodating cavity, the bearing plate is connected with the second support rod for carrying human body or objects, the first driving mechanism is accommodated in the first In the accommodating cavity and/or the second accommodating cavity, the first driving mechanism is connected or abutted with the second support rod, and is used to drive the second support rod to move up and down relative to the base, and then can drive the carrying plate up and down, so that sitting on the carrying plate The user on the platform can realize the up and down movement of the center of gravity of the body, which is convenient for the user to go to bed alone, take a high item, etc., and because the first driving mechanism is accommodated in the first storage cavity and/or the second storage cavity, it can play The waterproof effect enables the user to sit on the liftable seat for washing, bathing and other daily activities, further facilitating the user's daily use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, in which:

Fig. 1 is a three-dimensional structural schematic view of the first embodiment of the liftable seat of the present invention;

Fig. 2 is a schematic cross-sectional structural view of the first embodiment of the liftable seat of the present invention;

Fig. 3 is a partially enlarged schematic diagram of the partial structure of the liftable seat in Fig. 2;

Fig. 4 is an exploded schematic diagram of a partial structure of the first embodiment of the liftable seat of the present invention;

Fig. 5 is a three-dimensional structural schematic view of the first embodiment of the liftable seat of the present invention in another state;

Fig. 6 is a schematic cross-sectional structural view of the first embodiment of the liftable seat of the present invention in another state;

Fig. 7 is a schematic cross-sectional structural view of another viewing angle of the first embodiment of the liftable seat of the present invention;

Fig. 8 is a three-dimensional structural schematic view of other embodiments of the liftable seat of the present invention;

Fig. 9 is a three-dimensional structural schematic view of other embodiments of the liftable seat of the present invention in another state;

Fig. 10 is a schematic perspective view of the second embodiment of the liftable seat of the present invention;

Fig. 11 is a schematic cross-sectional structural view of the second embodiment of the liftable seat of the present invention;

Fig. 12 is a partially enlarged schematic diagram of the partial structure of the liftable seat in Fig. 11;

Fig. 13 is an exploded schematic diagram of the partial structure of the second embodiment of the liftable seat of the present invention;

Fig. 14 is a three-dimensional structural schematic diagram of other embodiments of the liftable seat of the present invention;

Fig. 15 is a schematic perspective view of the third embodiment of the liftable seat of the present invention;

Fig. 16 is a schematic cross-sectional structural view of the third embodiment of the liftable seat of the present invention;

Fig. 17 is a three-dimensional schematic diagram of the partial structure of the third embodiment of the liftable seat of the present invention;

Fig. 18 is a partially enlarged schematic view of the partial structure of the liftable seat in Fig. 16;

Fig. 19 is a perspective view of the fourth embodiment of the liftable seat of the present invention;

Fig. 20 is a schematic cross-sectional structural view of the fourth embodiment of the liftable seat of the present invention;

Fig. 21 is a cross-sectional schematic diagram of another viewing angle of the fourth embodiment of the liftable seat of the present invention;

Fig. 22 is a perspective view of the fifth embodiment of the liftable seat of the present invention;

Fig. 23 is a schematic cross-sectional structural view of the fifth embodiment of the liftable seat of the present invention;

Fig. 24 is an exploded schematic diagram of part of the structure of the fifth embodiment of the liftable seat of the present invention;

Fig. 25 is a schematic cross-sectional view of part of the structure of the fifth embodiment of the liftable seat of the present invention;

Fig. 26 is a schematic cross-sectional structural view of the sixth embodiment of the liftable seat of the present invention;

Fig. 27 is a schematic cross-sectional structure diagram of the eighth embodiment of the liftable seat of the present invention;

Fig. 28 is a schematic cross-sectional structural view of the ninth embodiment of the liftable seat of the present invention;

Fig. 29 is a schematic cross-sectional structural view of the tenth embodiment of the liftable seat of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The terms "first" and "second" in this application are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses. The term "and/or" is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

1 to 6, the first embodiment of the liftable seat 10 of the present invention includes a base 110, a first support rod 121, a second support rod 122, a load plate 130 and a first drive mechanism 140, and the base 110 is formed with a first The accommodating cavity 101, the first supporting rod 121 is arranged on the base 110, the second supporting rod 122 is sleeved on the first supporting rod 121, the first supporting rod 121 and/or the second supporting rod 122 form the second accommodating cavity 102 , the bearing plate 130 is connected or abutted with the second support rod 122 for carrying a human body or an object (not shown in the figure), and the first driving mechanism 140 is accommodated in the first accommodation chamber 101 and/or the second accommodation chamber In the cavity 102, the first driving mechanism 140 is connected with the second support rod 122, and is used to drive the second support rod 122 to rise and fall relative to the base 110, thereby driving the carrying plate 130 to rise and fall, so that the user sitting on the carrying plate 130 can realize physical fitness. The up and down movement of the center of gravity is convenient for the user to go to bed alone, take a high place, etc., and because the first driving mechanism 140 is accommodated in the first accommodating cavity 101 and/or the second accommodating cavity 102, it can play a waterproof role, The user can sit on the liftable seat 10 to carry out daily activities such as washing and bathing, which further facilitates the daily use of the user.

Specifically, referring to Fig. 1 and Fig. 2, when the liftable seat 10 is in daily use, the second support rod 122 can be located on the base 110, and the user is in a natural sitting posture when sitting on the load board 130; refer to Fig. 5 and Fig. 6 , when the liftable seat 10 is in the raised state, the second support rod 122 is spaced from the base 110 , and the center of gravity of the user's body is higher when sitting on the carrying plate 130 , which can facilitate moving to the bed or taking high objects.

In this embodiment, the second support rod 122 is sleeved on the outside of the first support rod 121, and the second support rod 122 forms the second accommodating cavity 102, so that the liquid flowing down from the side wall of the second support rod 122 can flow along the first The support rod 121 flows downward, and is not easy to enter the second accommodation cavity 102 from between the first support rod 121 and the second support rod 122 , further improving the waterproof effect and protecting the first driving mechanism 140 .

In this embodiment, the liftable seat 10 may further include a transmission mechanism 150, the transmission mechanism 150 is accommodated in the first accommodating cavity 101 and/or the second accommodating cavity 102, and the transmission mechanism 150 is connected to the first driving mechanism respectively. 140 is connected to the second support rod 122 , so that the first driving mechanism 140 can drive the second support rod 122 to move relative to the base 110 through the transmission mechanism 150 .

In this embodiment, the number of the first support rod 121, the second support rod 122, the transmission mechanism 150 and the first drive mechanism is one respectively, the first drive mechanism 140 includes a motor, the transmission mechanism 150 includes a screw rod 151, the motor and The screw rods 151 are respectively housed in the second housing cavity 102. The motor includes a motor body 141 and an output shaft 142 connected to the motor body 141. The screw rods 151 are respectively connected to the output shaft 142 and the second support rod 122, so that the motor can The screw rod 151 is used to drive the second support rod 122 to move up and down relative to the base 110 . By setting the screw rod 151 , the process of rising or falling of the second support rod 122 can be made more stable.

In this embodiment, the motor is arranged on the top of the screw rod 151, which can be easily installed, and by sealing the second support rod 122, it can prevent the motor from leaking water, so it is not necessary to consider the second support rod 122 and the second A support rod 121, and the sealing between the first support rod 121 and the base 110, meanwhile, the motor is not affected by the force in the vertical direction, which can reduce the load of the motor and prolong the service life of the motor.

In this embodiment, the liftable seat 10 may further include a connecting rod 123, the connecting rod 123 is arranged between the first support rod 121 and the screw rod 151, an internal thread is formed on the connecting rod 123, and the internal thread and the screw rod 151 Threaded connection, the connecting rod 123 is connected with the first support rod 121. By setting the connecting rod 123, the screw rod 151 can not be directly stressed, so that the screw rod 151 is not easy to be deformed, and the liftable seat 10 can be lifted normally, and the service life is longer. long.

In other embodiments, internal threads may also be directly provided on the inner wall of the first support rod 121 to be threadedly connected with the screw rod 151 , which is not limited here.

In this embodiment, the internal thread of the connecting rod 123 is formed at the end of the connecting rod 123 away from the base 110, and the end of the connecting rod 123 away from the base 110 is connected to the first support rod 121, which can make the lifting range of the liftable seat 10 wider. , better adaptability to the environment.

In other embodiments, the internal thread of the connecting rod 123 can also be formed between two ends of the connecting rod 123 , which can further increase the lifting range of the liftable seat 10 , which is not limited here.

In other embodiments, the internal thread of the connecting rod 123 may also be formed at an end of the connecting rod 123 close to the base 110 , which is not limited here.

In this embodiment, the liftable seat 10 may further include a connecting piece 124 disposed between the first supporting rod 121 and the connecting rod 123 for fixedly connecting the connecting rod 123 and the first supporting rod 121 .

In this embodiment, the first supporting rod 121 , the connecting rod 123 and the connecting member 124 can be integrally formed, which can make the overall structure of the first supporting rod 121 and the connecting rod 123 more stable.

In other embodiments, the connecting member 124 can be fixedly connected to the first supporting rod 121 and the connecting rod 123 respectively by means of welding, sticking, buckling, etc., which is not limited here.

In this embodiment, the liftable seat 10 may further include a bearing 125, the bearing 125 is arranged between the second support rod 122 and the screw rod 151, which can reduce the friction between the second support rod 122 and the screw rod 151, The service life of the second support rod 122 and the screw rod 151 is extended.

In this embodiment, the transmission mechanism 150 may further include a steering assembly 152, the steering assembly 152 includes a worm wheel 153 and a worm 154, the worm wheel 153 is connected to the screw 151, the worm 154 is connected to the output shaft 142, and the worm wheel 153 is engaged with the worm 154, The output shaft 142 can drive the screw rod 151 to rotate through the worm gear 153 and the worm screw 154 .

In this embodiment, the axial direction of the worm wheel 153 coincides with the axial direction of the screw rod 151, and the axial direction of the worm screw 154 is perpendicular to the axial direction of the screw rod 151. The force is turned, so that the first driving mechanism 140 is conveniently placed in the second accommodating cavity 102 .

In another specific embodiment, the steering assembly 152 may include two meshing gears (not shown in the figure), one of the two gears is connected to the screw rod 151, and the axial direction coincides with the axial direction of the screw rod 151, The other of the two gears is connected to the output shaft 142 , and its axial direction is perpendicular to the axial direction of the screw rod 151 , so as to realize the steering of the driving force output by the first driving mechanism 140 .

Referring to Fig. 1, Fig. 6 and Fig. 7, in this embodiment, the liftable seat 10 may also include an armrest 160 and a second drive mechanism 170, the armrest 160 is movably arranged on the bearing plate 130, and the second drive mechanism 170 is used to The armrest 160 is driven up and down relative to the bearing plate 130 , so as to assist the user to lift the hand carried on the armrest 160 .

In this embodiment, the liftable seat 10 further includes a battery 180 accommodated in the second accommodating cavity 102 for supplying power to the first driving mechanism 140 . By arranging the battery 180 in the first accommodating cavity 102, the battery 180 can be prevented from being exposed to water, and the structure of the liftable seat 10 can be made more compact and occupy less space.

In this embodiment, the liftable seat 10 may further include a controller 190, the controller 190 is arranged on the second support rod 122, the controller 190 is connected with the first driving mechanism 140, and is used to send the first driving mechanism 140 The lift control signal enables the first driving mechanism 140 to control the liftable seat 10 to lift up and down according to the lift control signal, making the liftable seat 10 more intelligent.

In other embodiments, the controller 190 can also be set separately from the second support rod 122, and the controller 190 is wirelessly connected to the first driving mechanism 140, and is used to send a lifting control signal to the first driving mechanism 140, which can facilitate the caregiver Auxiliary control.

Referring to Fig. 8 and Fig. 9, in other embodiments, the liftable seat 10 may also include a waist suspension mechanism 111 and a pedal 112, the waist suspension mechanism 111 is foldably arranged on the second support rod 122, and the pedal 112 is foldably arranged on the On the base 110, the user can be hoisted by setting the waist suspension mechanism 111, which is convenient for the user to stand up or do rehabilitation exercises, etc., and the pedal 112 can be provided to facilitate the user to place the feet.

In this embodiment, the waist suspension mechanism 111 may include a support portion 113 disposed on the second support rod 122 and a load-bearing portion 114 movably disposed on the support portion 113. A hanging rope or a hammock may be set on the load-bearing portion 114 to Lift the user up.

10 to 13, the second embodiment of the liftable seat 20 of the present invention includes a base 210, at least two first support rods 221, at least two second support rods 222, a load plate 230 and a driving mechanism 240, the base 210 A first accommodating cavity 201 is formed, at least two first support rods 221 are respectively arranged at both ends of the base 110, a second support rod 222 is sleeved on the first support rod 221, at least two sets of first support rods 221 and second The supporting rods 222 respectively form at least two second accommodating cavities 202, the bearing plate 230 is connected with the second supporting rods 222, and is used to carry a human body or objects, the driving mechanism 240 is accommodated in the first accommodating cavity 201, and the driving mechanism 240 It is connected or abutted with the second support rod 222, and is used to drive the second support rod 222 to move up and down relative to the base 210, and then drive the bearing plate 230 to rise and fall, so that the user sitting on the bearing plate 230 can move the center of gravity of the body up and down, which is convenient The user goes to bed alone, takes a high place, etc., and because the driving mechanism 240 is accommodated in the first accommodating cavity 201, it can play a waterproof role, so that the user can sit on the liftable seat 20 for washing, bathing, etc. activities, further facilitating the user's daily use.

In this embodiment, the base 210 includes a first seat body 211 and a second seat body 212 , and the first seat body 211 and the second seat body 212 form the first accommodating cavity 201 .

In this embodiment, the liftable seat 20 may also include at least two transmission mechanisms 250, the at least two transmission mechanisms 250 are respectively accommodated in at least two second accommodating cavities 202, and the at least two transmission mechanisms 250 are respectively connected to The driving mechanism 240 is connected to at least two second support rods 222 , so that the driving mechanism 240 can drive the at least two second support rods 222 to move relative to the base 210 through at least two transmission mechanisms 250 .

In this embodiment, the number of the first support rod 221, the second support rod 222, and the transmission mechanism 250 are two respectively, the number of the driving mechanism 240 is one, the driving mechanism 240 includes a motor, and the two transmission mechanisms 250 respectively include screw rods 251, the screw rod 251 is accommodated in the second accommodating cavity 202, and the screw rod 251 is respectively connected with the output shaft of the motor (not shown in the figure) and the first support rod 221, so that the motor can drive the second support rod 221 through the screw rod 251. The supporting rod 222 is raised and lowered relative to the base 210 , and the process of rising or falling of the second supporting rod 222 can be made more stable by providing the screw rod 251 .

In other embodiments, the number of the first support rod 221 , the second support rod 222 , and the transmission mechanism 250 may be greater than two, which is not limited here.

In this embodiment, the motor is arranged in the base 210, which is convenient for installation and can make the appearance of the liftable seat 20 more regular. Placing the motor at the bottom of the liftable seat 20 can also prevent the user from being burned by touching it, which is safe. Sex is higher.

In this embodiment, the liftable seat 20 may further include a connecting rod 223 and a connecting cylinder 224, the connecting rod 223 is arranged between the first support rod 221 and the screw rod 251, and the connecting cylinder 224 is arranged between the connecting rod 223 and the first Between the support rods 221, the connecting rod 223 is formed with an internal thread, the internal thread is threadedly connected with the screw rod 223, the connecting rod 223 is connected with the connecting cylinder 224, and the top of the connecting rod 223 abuts against the second supporting rod 222, so that the driving The mechanism 240 can drive the second support rod 222 to rise and fall relative to the base 210 through the screw rod 251, the connecting rod 223 and the connecting cylinder 224. By setting the connecting rod 223 and the connecting cylinder 224, the screw rod 251 can not be directly stressed, so that the screw rod 251 It is not easy to deform, the liftable seat 20 can be lifted normally, and the service life is longer.

In this embodiment, the internal thread of the connecting rod 223 is formed at the end of the connecting rod 223 close to the base 210 , which enables the liftable seat 20 to have a wider lifting range and better adaptability to the environment.

In other embodiments, the internal thread of the connecting rod 223 may also be formed between two ends of the connecting rod 223 , which can further increase the lifting range of the liftable seat 20 , which is not limited here.

In other embodiments, the connecting rod 223 may also be fixedly connected to the second support rod 222 , which is not limited here.

In this embodiment, the liftable seat 20 may further include a connecting piece 225 disposed between the connecting rod 223 and the connecting cylinder 224 for fixedly connecting the connecting rod 223 and the connecting cylinder 224 .

In this embodiment, the connecting rod 223 , the connecting cylinder 224 and the connecting piece 225 can be integrally formed, which can make the overall structure of the connecting rod 223 and the connecting cylinder 224 more stable.

In other embodiments, the connecting member 225 can be fixedly connected to the connecting rod 223 and the connecting cylinder 224 respectively by means of welding, sticking, buckling, etc., which is not limited here.

In this embodiment, the liftable seat 20 may further include a bearing 226, the bearing 226 is arranged between the first support rod 221 and the screw rod 251, which can reduce the friction between the first support rod 221 and the screw rod 251, The service life of the first support rod 221 and the screw rod 251 is extended.

In this embodiment, the liftable seat 20 may also include at least two groups of first steering assemblies 252 and second steering assemblies, at least two groups of first steering assemblies 252 are respectively connected to two screw rods 251, and the second steering assemblies are connected to Between the first steering assembly 252 and the driving mechanism 240 .

Specifically, the first steering assembly 252 includes a first worm wheel 254 and a first worm 255, the first worm wheel 254 is connected to the screw rod 251, the first worm 255 is connected to the second steering assembly 253, and the first worm wheel 254 is connected to the first worm 255 meshing, the second steering assembly 253 includes a second worm gear and a second worm (not shown in the figure), the second worm gear is respectively connected with the first worms 255 of two groups of first steering assemblies, and the second worm is connected with the output shaft of the motor connected, and the second worm gear and the second worm mesh, so that the output shaft can drive the screw rod 251 to rotate through the first steering assembly 252 and the second steering assembly 253 .

In this embodiment, the axial direction of the first worm wheel 254 coincides with the axial direction of the screw rod 251, the axial direction of the first worm screw 255 is perpendicular to the axial direction of the screw rod 251, and the axial direction of the second worm wheel coincides with the axial direction of the first worm screw 255. The axial direction coincides, the axial direction of the second worm and the axial direction of the output shaft are respectively parallel to the axial direction of the screw rod 251, and the driving force output by the driving mechanism 240 can be adjusted by setting the first steering assembly 252 and the second steering assembly 253. Steering is convenient for setting the drive mechanism 240 in the first accommodating cavity 201. By setting the axial direction of the output shaft of the motor parallel to the axial direction of the screw rod 251, the motor can be freed from the force in the vertical direction. , thereby reducing the load on the motor and prolonging the service life of the motor.

In another specific embodiment, the first steering assembly 252 may include a first gear and a second gear (not shown in the figure), the first gear is connected to the screw rod, the second gear meshes with the first gear, and the first gear The axial direction of the second gear coincides with the axial direction of the screw mandrel, and the axial direction of the second gear is perpendicular to the axial direction of the screw mandrel. The second steering assembly 253 can include a third gear and a fourth gear (not shown in the figure). The gear is connected to the first steering assembly 252 , the fourth gear meshes with the third gear, and is connected to the output shaft to steer the driving force output by the driving mechanism 240 , so as to facilitate setting the driving mechanism 240 in the first accommodating chamber 201 .

In this embodiment, the liftable seat 20 further includes a battery 260 , the battery 260 is accommodated in the first accommodating chamber 201 and located in the second seat body 212 for supplying power to the driving mechanism 240 . By arranging the battery 260 in the first accommodating chamber 201, the battery 260 can be prevented from being exposed to water, and the structure of the liftable seat 20 can be made more compact and occupy less space.

In this embodiment, the liftable seat 20 may further include a controller 270, the controller 270 is arranged on the second support rod 222, the controller 270 is connected with the driving mechanism 240, and is used to send a lifting control signal to the driving mechanism 240, The driving mechanism 240 can control the liftable seat 20 to rise and fall according to the lift control signal, so that the liftable seat 20 is more intelligent.

Referring to FIG. 14 together, in other embodiments, the liftable seat 20 may further include a bed pan assembly 280, the bed pan assembly 280 includes a bed pan 281 and a support frame 282, the support frame 282 is connected to the second support rod 222, and the bed pan 281 is arranged on On the support frame 282, the carrying plate 230 is formed with a through groove 231 corresponding to the bedpan 281, so that the user can defecate when sitting on the carrying plate 230, without the need for the user to shift the position, and the use is more convenient.

In this embodiment, the second support rod 222 may be provided with a fixing portion 227, the support frame 282 is detachably connected to the fixing portion 227, and the bedpan 281 is mounted on the support frame 282, so that the bedpan 281 can be removed from the support frame 282 , the support frame 282 can also be disassembled from the second support rod 222 to facilitate the cleaning of the bedpan 281 .

15 to 17, the third embodiment of the liftable seat 30 of the present invention includes a base 310, two first support rods 321, two second support rods 322, a load plate 330, a driving mechanism 340 and two transmission mechanisms 350, wherein, the structures of the base 310, the two first support rods 321, the two second support rods 322, and the load plate 330 refer to the above-mentioned second embodiment of the liftable seat 20, and will not be repeated here.

In this embodiment, the base 310 forms a first accommodating cavity 301 for accommodating the driving mechanism 340 , and the first support rod 321 and the second support rod 322 form a second accommodating cavity 302 for accommodating the transmission mechanism 350 .

In this embodiment, the driving mechanism 340 includes a motor, and the two transmission mechanisms 350 include screw rods 351 and steering assemblies 352 respectively. The output shaft (not shown in the figure) is connected so that the motor can drive the second support rod 322 to rise and fall relative to the base 310 through the screw rod 351 and the steering assembly 352 .

Referring to Fig. 18 together, in this embodiment, the axial direction of the output shaft of the motor is perpendicular to the axial direction of the screw rod 351, and the steering assembly 352 includes a meshing first gear 353 and a second gear 354, and the first gear 353 and the second gear 354 are meshed. The wire 351 is connected, and the axial direction of the first gear 353 coincides with the axial direction of the screw mandrel 351, the second gear 354 is connected with the output shaft of the motor, and the axial direction of the second gear 354 is perpendicular to the axial direction of the screw mandrel 351, The driving force output by the driving mechanism 340 can be turned by setting the steering assembly 352, so that the driving mechanism 340 is conveniently arranged in the first accommodating chamber 301, and the output shaft of the motor is connected with the screw rod 351 through a group of steering assemblies 352, which can make The liftable seat 30 has a simpler and more compact structure, takes up less space, and has less error probability.

In another specific embodiment, the steering assembly 352 may also include a worm gear and a worm (not shown in the figure), and may also steer the driving force output by the driving mechanism 340 , which is not limited here.

In this embodiment, the liftable seat 30 further includes a battery 360 , and the battery 360 is accommodated in the first accommodation cavity 301 for supplying power to the driving mechanism 340 . By arranging the battery 360 in the first accommodating chamber 301, the battery 360 can be prevented from being exposed to water, and the structure of the liftable seat 30 can be made more compact and occupy less space.

19 and 20, the fourth embodiment of the liftable seat 40 of the present invention includes a base 410, two first support rods 421, two second support rods 422, a load plate 430, two driving mechanisms 440 and two The transmission mechanism 450, wherein, the structures of the base 410, the two first support rods 421, the two second support rods 422, and the load plate 430 refer to the above-mentioned second embodiment of the liftable seat 20 and the third embodiment of the liftable seat 30 example, which will not be repeated here.

In this embodiment, the base 410 forms a first accommodating cavity 401 for accommodating the driving mechanism 440 , and the first support rod 421 and the second support rod 422 form a second accommodating cavity 402 for accommodating the transmission mechanism 450 .

In this embodiment, the driving mechanism 440 includes a motor, and the two transmission mechanisms 450 respectively include screw rods 451 and steering assemblies 452, and the two screw rods 451 are respectively connected to two sets of steering assemblies 452, and the two sets of steering assemblies 452 are connected to two sets of steering assemblies respectively. The output shaft of the motor (not shown in the figure) is connected so that the motor can drive the second support rod 422 to rise and fall relative to the base 410 through the screw rod 451 and the steering assembly 452 .

In this embodiment, the liftable seat 40 further includes a connecting rod 453, the connecting rod 453 is arranged between the first support rod 421 and the screw rod 451, the connecting rod 453 is formed with an internal thread, and the internal thread is threaded with the screw rod 451 Connection, the connecting rod 453 is connected with the second supporting rod 422, so that when the screw rod 451 rotates, the connecting rod 453 can drive the second supporting rod 422 to move up and down relative to the screw rod 451.

In this embodiment, the axial direction of the output shaft of the motor is perpendicular to the axial direction of the screw shaft 451, and the steering assembly 452 may include an engaged worm wheel and a worm (not shown in the figure), the worm wheel is connected with the screw shaft 451, and the worm wheel The axial direction coincides with the axial direction of the screw mandrel 451, and the axial direction of the worm screw is perpendicular to the axial direction of the screw mandrel 451. By setting the steering assembly 452, the driving force output by the driving mechanism 440 can be turned, so that the driving mechanism 440 can be arranged on the second In a housing chamber 401, the output shaft of the motor is connected to the screw rod 451 through a set of steering components 452, which can make the structure of the liftable seat 40 simpler and more compact, occupy less space, and cause less error probability.

In another specific embodiment, the steering assembly 452 may also include a meshing first gear and a second gear (not shown in the figure), the first gear is connected to the screw rod 451, and the axial direction of the first gear is connected to the screw shaft. The axial direction of the rod 451 coincides, and the axial direction of the second gear is perpendicular to the axial direction of the screw rod 451 , so as to realize the steering of the driving force output by the driving mechanism 440 .

In another specific embodiment, the liftable seat 40 of the present invention may not include a steering assembly, the motor body of the motor is accommodated in the first accommodating cavity 401, and the axial direction of the output shaft of the motor is aligned with the axial direction of the screw rod 451. Coincidentally, the screw rod 451 is connected to the output shaft, and the motor directly drives the screw rod 451 to rotate, which can make the structure of the liftable seat 40 simpler and more compact, and the probability of errors is smaller.

In this embodiment, the liftable seat 40 further includes a battery 460 accommodated in the first accommodation chamber 401 for supplying power to the driving mechanism 440 . By arranging the battery 460 in the first accommodating chamber 401, the battery 460 can be prevented from being exposed to water, and the structure of the liftable seat 40 can be made more compact and occupy less space.

Referring to Fig. 21 together, in this embodiment, the liftable seat 40 may further include a controller 470, the controller 470 is arranged on the second support rod 422, and a wiring groove 403 is also formed in the first support rod 421, The connecting line (not shown in the figure) of controller 470 is connected with driving mechanism 440 through wiring groove 403, is used for sending lifting control signal to driving mechanism 440, can facilitate controller 470 and driving mechanism 440 by setting wiring groove 403 The electrical connection makes the transmission and reception of the lifting control signal more stable, and the wiring groove 403 is formed in the first support rod 421, which can realize waterproof and dustproof.

22 and 23, the fifth embodiment of the liftable seat 50 of the present invention includes a base 510, a first support rod 521, a second support rod 522, a load plate 530 and a driving mechanism 540, wherein the base 510, the first support For the structure of the rod 521 , the second support rod 522 , the bearing plate 530 and the driving mechanism 540 , refer to the above-mentioned first to fourth embodiments of the liftable seat, and details will not be repeated here.

In this embodiment, the base 510 forms a first accommodating cavity 501 for accommodating the driving mechanism 540 , and the first supporting rod 521 and the second supporting rod 522 form a second accommodating cavity 502 .

In this embodiment, the liftable seat 50 further includes a self-locking mechanism 550, the self-locking mechanism 550 is connected with the driving mechanism 540, and is used to lock the driving mechanism 540, so that the liftable seat 50 can remain still when it does not need to move, Improve the safety of the liftable seat 50.

Referring to Fig. 24 and Fig. 25 together, in this embodiment, the driving mechanism 540 includes a motor housing 541 and a motor disposed in the motor housing 541, and the self-locking mechanism 550 includes a first abutment 551, a second The abutting piece 552, the brake piece 553 and the elastic piece (not shown in the figure), the brake piece 553 is arranged between the first abutment piece 551 and the second abutment piece 552, the brake piece 553 is on the periphery of the motor It is fixed upward relative to the motor, and the elastic piece is arranged on the side of the first abutting piece 551 facing away from the brake piece 553. The second abutting piece 552 and the elastic piece are respectively fixedly connected with the motor housing 541. An abutting piece 551 is abutted against, so that the brake piece 553 is clamped between the first abutting piece 551 and the second abutting piece 552, thereby locking the motor. By locking the motor when the power is off, the liftable seat 50 can be prevented from being displaced when the power is off, so that the safety of the liftable seat 50 is higher.

In this embodiment, the motor includes a motor main body 542 and an output shaft 543 connected to the motor main body 542. The first abutting member 551, the second abutting member 552, and the braking member 553 are sleeved on the output shaft 543 respectively. The moving part 553 is fixed relative to the output shaft 543 in the circumferential direction of the output shaft 543, and the first abutting part 551 and the second abutting part 552 are spaced apart from the output shaft 543, so that the brake part 553 is clamped by the first abutting part 551 and the second abutting piece 552, the brake piece 553 can brake the output shaft 543, so that the output shaft 543 does not rotate, and when the first abutment piece 551 does not act on the brake piece 553, the brake The member 553 can rotate with the output shaft 543 , and the first abutting member 551 and the second abutting member 552 do not interfere with the output shaft 543 .

In this embodiment, a non-circular limiting hole 503 is formed on the stopper 553, and a stopper protrusion 544 is provided on the motor. 553 is fixed relative to the output shaft 543 in the circumferential direction of the output shaft 543 .

In this embodiment, the first abutting member 551 can be a magnet, and the self-locking mechanism 550 also includes a magnetic induction member 554 and a coil (not shown) wound on the magnetic induction member 554, and the magnet can interact with the magnetic induction The member 554 and the coil interact to make the magnet move away from the stopper 553.

Specifically, when the coil is energized, a magnetic field can be generated to attract the first abutting member 551, so that the first abutting member 551 can receive a force opposite to the elastic force of the elastic member, and then move away from the braking member 553, The braking member 553 can rotate with the output shaft 543, and the liftable seat 50 can move; when the coil is powered off, the first abutting member 551 is affected by the elastic force of the elastic member, and the braking member 553 is abutted against the second abutting member. The connecting piece 552, the braking piece 553 does not rotate, and produces a braking effect on the output shaft 543.

In this embodiment, the self-locking mechanism 550 may further include a fixing piece 555 for fixedly connecting the magnetic sensor 554 with the motor housing 541 .

22 and 26, the sixth embodiment of the liftable seat 50 of the present invention includes a base 510, a first support rod 521, a second support rod 522, a load plate 530 and a driving mechanism 540, wherein the base 510, the first support For the structure of the rod 521 , the second support rod 522 , the bearing plate 530 and the driving mechanism 540 , please refer to the first to fifth embodiments of the liftable seat mentioned above, and will not repeat them here.

In this embodiment, the base 510 forms a first accommodating cavity 501 for accommodating the driving mechanism 540 , and the first supporting rod 521 and the second supporting rod 522 form a second accommodating cavity 502 .

In this embodiment, the driving mechanism 540 includes a motor, the motor includes a plurality of wires (not shown in the figure) for connecting with a power supply, and the self-locking mechanism 550 is connected with a plurality of wires for short-circuiting the wires to Lock the motor.

Wherein, the self-locking mechanism 550 may include a circuit board, and brake the motor directly by shorting the wires of the motor, which can make the structure of the self-locking mechanism 550 simpler.

In this embodiment, the liftable seat 50 further includes a transmission mechanism 560. The transmission mechanism 560 includes a screw rod 561 and a transmission assembly 562. 522 connection, the transmission assembly 562 is respectively connected with the screw mandrel 561 and the motor, the ratio of the speed of the screw mandrel 561 to the speed of the motor is less than or equal to 1:50, such as 1:50, 1:60 or 1:70, etc., through the transmission assembly 562 makes the rotation speed of the motor and the rotation speed of the screw rod 561 form a large reduction ratio, which can make the locking effect of the self-locking mechanism 550 better.

In this embodiment, the transmission assembly 562 includes a worm gear and a worm (not shown in the figure), the worm gear is connected to the screw rod 561 and arranged coaxially, the worm meshes with the worm wheel, and the worm is connected to the motor and arranged coaxially, the speed of the worm wheel and the The ratio of the rotational speed of the worm is less than or equal to 1:50, so that the ratio of the rotational speed of the screw 561 to the rotational speed of the motor is less than or equal to 1:50.

In another specific embodiment, the transmission assembly 562 may also include a first gear and a second gear (not shown in the figure), the first gear is connected to the screw rod 561 and arranged coaxially, and the second gear meshes with the first gear , the second gear is connected to the motor and arranged coaxially, the ratio of the speed of the first gear to the speed of the second gear is less than or equal to 1:50, so that the ratio of the speed of the screw mandrel 561 to the speed of the motor is less than or equal to 1: 50.

In other embodiments, the liftable seat 50 may also include the self-locking mechanism in the fifth embodiment of the liftable seat and the self-locking mechanism in the sixth embodiment of the liftable seat, which can make the self-locking mechanism reliable. Sex is higher.

In this embodiment, the liftable seat 50 can also include a meal board 570, which is arranged on the second support rod 522, and is used for carrying a meal plate (not shown in the figure), etc. Dining on seat 50.

In this embodiment, the dining board 570 is detachably arranged on the second support rod 522, and the dining board 570 is installed when eating, and the dining board 570 is disassembled when not eating, which is convenient for the user's daily activities.

The seventh embodiment of the liftable seat (not shown in the figure) of the present invention includes a base, a first support rod, a second support rod, a load plate, a driving mechanism and a transmission mechanism, wherein the base, the first support rod, the second For the structure of the support rod, the load plate and the driving mechanism, please refer to the above-mentioned first to sixth embodiments of the liftable seat, and will not repeat them here.

In this embodiment, the base forms a first accommodating cavity for accommodating the driving mechanism, and the first support rod and the second support rod form a second accommodating cavity.

In this embodiment, the first driving mechanism may include a motor, the motor includes a motor body and an output shaft connected to the motor body, the motor body is housed in the first accommodating cavity, the transmission mechanism includes a meshing gear and a rack, and the gear and The output shaft is connected, and the rack is connected with the second support rod, so that the motor can drive the second support rod to lift relative to the base through the gear and the rack.

Referring to Fig. 27, the eighth embodiment of the liftable seat 60 of the present invention includes a base (not shown in the figure), a first support rod 611, a second support rod 612, a load plate (not shown in the figure), a driving mechanism ( Not shown in the figure) and the transmission mechanism 620, wherein, the structures of the base, the first support rod 611, the second support rod 612, the load plate and the driving mechanism refer to the above-mentioned first to seventh embodiments of the liftable seat, here No longer.

In this embodiment, the base forms a first accommodating cavity, and the first support rod 611 and the second support rod 612 form a second accommodating cavity 601 .

In this embodiment, the driving mechanism may include a motor, the motor includes a motor body and an output shaft connected to the motor body, the motor body is accommodated in the first accommodating cavity, and the transmission mechanism 620 includes a first gear 621, a second gear 622 and Chain 623, the first gear 621 is arranged on one end of the first support rod 611 close to the base, the second gear 622 is arranged on the end of the first support rod 611 away from the base, one end of the chain 623 is fixedly connected with the first support rod 611, the chain 623 The other end of the first gear 621 and the second gear 622 are fixedly connected to the end of the second support rod 612 close to the base, so that the motor can drive the first gear 621 to rotate, and then drive the chain 623 and the second gear 622 through the chain 623 and the second gear. The joint of the two support rods 612 is raised and lowered, so that the second support rod 612 can be raised and lowered relative to the base.

Referring to Fig. 28, the ninth embodiment of the liftable seat 70 of the present invention includes a base (not shown in the figure), a first support rod 711, a second support rod 712, a load plate (not shown in the figure), a driving mechanism ( Not shown in the figure) and the transmission mechanism 720, wherein, the structures of the base, the first support rod 711, the second support rod 712, the load plate and the driving mechanism refer to the above-mentioned first to eighth embodiments of the liftable seat, here No longer.

In this embodiment, the base forms a first accommodating cavity, and the first support rod 711 and the second support rod 712 form a second accommodating cavity 701 .

In this embodiment, the driving mechanism may include a motor, the motor includes a motor body and an output shaft connected to the motor body, the motor body is accommodated in the first accommodating cavity, and the transmission mechanism 720 includes a connecting rope 721, a first fixing member 722 and The second fixing member 723, one end of the connecting rope 721 is connected to the output shaft through the first fixing member 722, and the other end of the connecting rope 721 is connected to the first support rod 711 away from the end of the base (specifically, it can be the second fixing member 723) and the second fixing member 723. The two support rods 712 are connected near the end of the base, so that the motor can rotate to wind the connecting rope 721 on the first fixing member 722, and then pull the connecting rope 721, so that the connection between the connecting rope 721 and the second supporting rod 712 is lifted, so that The second support rod 712 can be raised and lowered relative to the base.

Referring to Fig. 29, the tenth embodiment of the liftable seat 80 of the present invention includes a base (not shown in the figure), a first support rod 811, a second support rod 812, a load plate (not shown in the figure), and a driving mechanism 820 , wherein, the structures of the base, the first support rod 811 , the second support rod 812 and the load plate refer to the above-mentioned first to ninth embodiments of the liftable seat, and will not be repeated here.

In this embodiment, the base forms a first accommodating cavity, and the first support rod 811 and the second support rod 812 form a second accommodating cavity 801 .

In this embodiment, the driving mechanism 820 may include a cylinder, the cylinder includes a cylinder 821, a piston 822, a piston rod 823 and an end cover 824, and the cylinder 821 is accommodated in the first accommodating cavity and/or the second accommodating cavity 801 Inside, the piston 822 is arranged in the cylinder 821, the piston rod 823 is respectively connected with the piston 822 and the end cover 824, and the end cover 824 is accommodated in the second accommodating chamber 801, and is connected or abutted with the second support rod 812, The cylinder can directly drive the second support rod 812 to rise and fall relative to the base.

Referring to Fig. 1 to Fig. 7, the lift embodiment of the present invention includes a base 110, a first support rod 121, a second support rod 122, at least two bearing plates 130 and a first drive mechanism, wherein the base 110, the first support rod 121 , the structures of the second support rod 122 and the first driving mechanism refer to the above embodiment of the liftable seat, and will not be repeated here.

In this embodiment, at least two bearing plates 130 are respectively rotatably connected to the second support rod 122, so that the at least two bearing plates 130 can be relatively opened. After the at least two bearing plates 130 are placed on both sides of the user's body, at least The two bearing boards 130 are relatively closed, so that the user is carried on at least two bearing boards 130, which is convenient for the user to transfer from a seat, a bed, etc. to the lifting machine.

Embodiments of the wheelchair (not shown in the figures) of the present invention include a base, a first support rod, a second support rod, a bearing plate and a first drive mechanism, wherein the base, the first support rod, the second support rod, the bearing plate and the first For the structure of a driving mechanism, refer to the above-mentioned embodiment of the liftable seat, and details are not repeated here.

The above is only the embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (14)

1. A liftable seat, comprising:

the base is provided with a first accommodating cavity;

the first supporting rod is arranged on the base;

the second supporting rod is sleeved on the first supporting rod, and a second accommodating cavity is formed by the first supporting rod and/or the second supporting rod;

the bearing plate is connected with the second supporting rod and used for bearing a human body or an article;

the first driving mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, is connected with or abutted against the second supporting rod and is used for driving the second supporting rod to lift relative to the base.

2. The liftable seat according to claim 1, further comprising a transmission mechanism, wherein the transmission mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, and the transmission mechanism is connected to the first driving mechanism and the second supporting rod respectively.

3. The liftable seat according to claim 2, wherein the first driving mechanism comprises a motor, the motor comprises a motor main body and an output shaft connected to the motor main body, the motor main body is accommodated in the first accommodating cavity, the transmission mechanism comprises a lead screw, the lead screw is accommodated in the second accommodating cavity, and the lead screw is respectively connected with the output shaft and the second support rod.

4. The liftable seat according to claim 2, wherein the first driving mechanism comprises a motor, the motor comprises a motor main body and an output shaft connected to the motor main body, the motor main body is accommodated in the first accommodating cavity, the transmission mechanism comprises a gear and a rack, the gear is connected to the output shaft, and the rack is connected to the second support rod.

5. The liftable seat according to claim 2, wherein the first driving mechanism comprises a motor, the motor comprises a motor main body and an output shaft connected to the motor main body, the motor main body is accommodated in the first accommodating cavity, the transmission mechanism comprises a first gear, a second gear and a chain, the first gear is disposed at one end of the first supporting rod close to the base, the second gear is disposed at one end of the first supporting rod far away from the base, one end of the chain is fixedly connected to the first supporting rod, and the other end of the chain is fixedly connected to one end of the second supporting rod close to the base through the first gear and the second gear.

6. The liftable seat according to claim 2, wherein the first driving mechanism comprises a motor, the motor comprises a motor main body and an output shaft connected to the motor main body, the motor main body is accommodated in the first accommodating cavity, the transmission mechanism comprises a connecting rope, one end of the connecting rope is connected to the output shaft, and the other end of the connecting rope is connected to one end of the second supporting rod, which is far away from the base, through the first supporting rod.

7. The liftable seat according to claim 1, wherein the first driving mechanism comprises a cylinder, the cylinder comprises a cylinder barrel, a piston rod and an end cover, the cylinder barrel is accommodated in the first accommodating cavity and/or the second accommodating cavity, the piston is arranged in the cylinder barrel, the piston rod is respectively connected with the piston and the end cover, and the end cover is accommodated in the second accommodating cavity and is connected with or abutted against the second support rod.

8. The liftable seat according to claim 2, wherein the number of the first support rod, the second support rod, the transmission mechanism and the first driving mechanism is one, and the first driving mechanism comprises a motor.

9. The liftable seat according to claim 2, wherein the number of the first support rod, the second support rod, the transmission mechanism and the first driving mechanism is two, the first driving mechanism comprises a motor, and the two motors are respectively arranged in one-to-one correspondence with the two transmission mechanisms, the two first support rods and the two second support rods; or

The first supporting rod, the second supporting rod and the transmission mechanism are respectively two in number, the first driving mechanism is one in number, the first driving mechanism comprises a motor, the transmission mechanism is respectively corresponding to the first supporting rod and the second supporting rod in a one-to-one manner, and the motor is respectively connected with the transmission mechanism in a two-to-one manner.

10. The liftable seat according to claim 1, further comprising an armrest movably disposed on the bearing plate and a second driving mechanism for driving the armrest to lift relative to the bearing plate.

11. The liftable seat according to claim 1, further comprising a waist-hanging mechanism foldably disposed on the second support rod and a pedal foldably disposed on the base.

12. The liftable seat according to claim 1, further comprising a bedpan assembly, wherein the bedpan assembly comprises a bedpan and a support frame, the support frame is connected to the second support rod, the bedpan is disposed on the support frame, and the support plate is formed with a through groove corresponding to the bedpan.

13. A shifter, comprising:

the base is provided with a first accommodating cavity;

the first supporting rod is arranged on the base;

the second supporting rod is sleeved on the first supporting rod, and the first supporting rod and the second supporting rod form a second accommodating cavity together;

the at least two bearing plates are respectively and rotatably connected with the second supporting rod and used for bearing human bodies or articles;

the first driving mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, connected with the base and the second supporting rod and used for driving the second supporting rod to lift relative to the base.

14. A wheelchair, comprising:

the base is provided with a first accommodating cavity;

the first supporting rod is arranged on the base;

the second supporting rods are respectively sleeved on the at least two first supporting rods, and the first supporting rods and the second supporting rods form a second accommodating cavity together;

the bearing plate is connected with the second supporting rod and used for bearing a human body or an article;

the first driving mechanism is accommodated in the first accommodating cavity and/or the second accommodating cavity, and the first driving mechanism is respectively connected with the base and at least two second supporting rods and is used for driving the second supporting rods to lift relative to the base.

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