CN116392338A - Nursing bed and chair automatic docking and separating device and docking method - Google Patents

Abstract

The invention discloses an automatic docking and separation device and a docking method for nursing beds and chairs, wherein the device includes a bed body and a wheelchair, one side of the bed body on the longitudinal center plane is a docking and separation area, and the other side is a turning and expansion area, wherein the wheelchair can be docked The separation zone rotates sideways and separates from the bed. The wheelchair realizes the posture conversion from lying flat to semi-lying and then to sitting through the rotating mechanism, the curved leg linkage mechanism and the back-lifting driving mechanism. The bed body and the wheelchair complete the docking and separation of the bed and chair through the power on and off of the docking and separating device, and the position and posture conversion function of the wheelchair can only be performed when the contact power device is turned on. The wheelchair stroke detection device is arranged on the support frame, and the posture conversion of the wheelchair is controlled by detecting the translation stroke of the wheelchair. Compared with the prior art, the present invention can ensure the safety of the equipment, prolong the service life, and at the same time provide stable support force to ensure the stability of the wheelchair rotation process.

Description

Nursing bed and chair automatic docking and separating device and docking method

technical field

The invention relates to the technical field of nursing equipment, in particular to an automatic docking and separating device for nursing beds and chairs and a docking method.

Background technique

With the increasingly serious problem of population aging, among the elderly population, there are more and more disabled and semi-disabled elderly, and their medical care and pension problems need to be solved urgently. Traditional medical care methods require a large number of nursing staff and medical resources, and cannot meet the requirements of home-based care. There is an urgent need in the market for an auxiliary nursing device that is highly intelligent and can meet the needs of home care for the elderly.

In the mainstream of existing multifunctional nursing beds, there are two types: detachable bed and chair and inseparable bed and chair. For example, a detachable bed and chair integrated robot proposed by the patent application No. However, there are still some disadvantages: 1. Since the electromagnetic lock works by magnetic force, when it is necessary to separate the wheelchair and the bed, the main body of the magnet and the suction plate will still be closed due to the suction force. Separation will cause the male and female terminals of the contact power device to be in a virtual connection state. Over time, the equipment will not work normally, and it will be damaged or even easily short-circuited and burned, which is not safe enough. 2. The rotation of the wheelchair is realized through the crank-link transmission mechanism of the push rod axis 3 and the push rod axis 4. Due to bearing part of the weight of the wheelchair and the elderly, the transmission mechanism is easy to slip, resulting in unstable or discontinuous rotation. Insufficient security.

Contents of the invention

The purpose of the present invention is to provide an automatic docking and separating device for nursing beds and chairs and a docking method, which can avoid the false connection state, ensure the safety of the equipment, prolong the service life, provide stable support force, and ensure the stability of the wheelchair rotation process.

In order to achieve the above object, the present invention adopts the following technical solutions:

An automatic docking and separating device for nursing beds and chairs, including a bed body and a wheelchair. One side of the bed body on the longitudinal center plane is a docking and separation area, and the other side is a turning and expansion area, wherein the wheelchair can perform lateral movements in the docking and separation area. Rotate and separate from the bed body, the wheelchair includes a support plate, a support base, a rotation mechanism, a curved leg linkage mechanism, a back-lifting drive mechanism and an armrest device, and the wheelchair Realize the posture conversion from lying flat to semi-lying and then to sitting, and the armrest device realizes the opening and retracting of the armrest;

The bed body includes a support frame, an electric control box, a guard plate device, a docking separation device, and a contact power supply device. The bed body and the wheelchair complete the docking and separation of the bed and chair by switching on and off the docking separation device. The pose conversion function can only be performed when the contact power device is turned on;

A stroke detection device is provided on the support frame, and the pose conversion of the wheelchair is controlled by detecting the translation stroke of the wheelchair.

Compared with the electromagnetic lock method, the motor lock will not cause the male end and the female end of the contact power device to be in a virtual connection state, thereby ensuring the safety of the equipment and prolonging the service life.

It is further provided that: the docking and separating device includes a docking guide rail and a docking installation plate slidingly connected thereto, the docking guide rail is fixedly arranged on the support frame, and a motor lock is installed on the side of the docking installation board facing away from the wheelchair, so A lock ring matching the motor lock is installed on the side of the support base facing the bed body, and a first electric push rod is arranged on the support frame, one end of the first electric push rod is hingedly connected with the support frame, and the other end is connected with the support frame. Butt mounting plate hinged connection;

The docking and separation of the bed and chair is realized through the locking and unlocking of the motor lock and the locking ring, and the docking installation plate is driven to move along the docking guide rail by the first electric push rod, thereby pushing the wheelchair to translate along the width direction of the bed.

It is further set that: the stroke detection device includes a first stroke switch, a second stroke switch and a third stroke switch fixed on the support frame, and the first stroke switch, the second stroke switch and the third stroke switch are arranged along the width of the bed body. The directions are arranged in sequence and are electrically connected to the electric control box. The position indicating platform is arranged on the docking installation plate. The first travel switch, the second travel switch and the third travel switch are used to detect the translation distance of the position indicating platform.

It is further set that: the support board includes a back board, a hip board, a thigh board, a calf board and a foot board, one side of the hip board is hinged with the back board, the other side is hinged with the thigh board, and one side of the lower leg board is hinged. Hinged to the thigh plate and the other side to the foot plate.

It is further set that: the rotating mechanism includes a rotating support, a support tube and a reduction motor, the rotation support is fixed under the hip plate, the support tube and the reduction motor are fixed inside the support base, and the top of the support tube A transmission gear fixedly connected to the rotating support is connected through bearing rotation, and the output shaft of the reduction motor is fixed with a driving gear meshed with the transmission gear.

Compared with the way of using the crank linkage mechanism to drive the wheelchair to rotate, the rigidity of the support tube is greater, which can provide a more stable support force, and the gear transmission mechanism is relatively more stable, which ensures the stability of the wheelchair rotation process and ensures the safety of use .

It is further provided that: the back-lifting driving mechanism includes a second electric push rod, one end of the second electric push rod is hinged to the rotating support, and the other end is hinged to the middle of the backboard.

It is further set that: the curved leg linkage mechanism includes a third electric push rod, a first connecting rod and a second connecting rod, the side of the calf plate close to the thigh plate is hingedly connected with a curved leg connecting plate, and the third electric push rod One end of the push rod is hinged to the rotating support, and the other end is hinged to the curved leg connecting plate; the middle part of the thigh board is fixedly provided with a chute, and a roller is installed on the third electric push rod, and the roller and the chute slide Connection; one end of the first connecting rod is connected with the thigh board, the other end is hinged with the second connecting rod, and the second connecting rod is hinged with the foot board.

It is further set as follows: the protection board device includes a first lifting protection board arranged in the docking separation area and a first protection board track slidably connected with it, and a second lifting protection board arranged in the turning expansion area and corresponding to it The second guard rail that is slidingly connected, the bottom of the first lift guard and the second lift guard is provided with a lock, and the upper and lower ends of the first guard track and the second guard track are respectively provided with and The lock is matched with the card slot, and the first lifting guard plate and the second lifting guard plate are fastened in the card slot through the lock; the bottom of the first guard plate track is provided with a fourth stroke switch, and the fourth stroke The switch is used to detect whether the first lifting guard falls to the bottom of the guard rail.

It is further set that: the armrest device includes an armrest and a hinge, the hinge is fixed on one side of the backboard, the armrest is rotatably connected to the hinge, a fifth travel switch is arranged on the backboard, and the first The five-stroke switch is used to detect whether the armrest is retracted to the back of the back panel.

When the wheelchair is in a sitting posture, if the fourth travel switch detects that the first lifting guard has dropped to the bottom of the first guard rail and the fifth travel switch detects that the armrest has been retracted to the back of the backboard, the gear motor Can drive the wheelchair to rotate; if the fourth travel switch detects that the first lifting guard plate has not dropped to the bottom of the first guard plate track and/or the fifth travel switch detects that the armrest is not retracted to the back of the backboard, the geared motor cannot drive the wheelchair to rotate , further ensuring the safety of use.

The invention also discloses a docking method of an automatic docking and separating device for nursing beds and chairs, which includes the following steps:

S1. When the bed and chair are separated, the nurse returns the wheelchair, the contact power device is in the energized state, the third travel switch detects the position indicating platform, and the motor lock and the lock ring are in the locked state;

S1. When the bed and chair are separated, the nurse inserts the lock ring into the lock hole and inserts the male end into the female end to return the wheelchair. At this time, the contact power-on device is in the power-on state, and the third travel switch detects the position indicating platform. The motor lock and lock ring are locked;

S2. The fourth travel switch detects the position of the first lifting guard, if the first lifting guard has dropped to the bottom of the track of the first guard, then enter the next step;

S3. The fifth travel switch detects the position of the armrest. If the armrest has been retracted to the back of the backboard, enter the next step;

S4. The first electric push rod pushes the wheelchair to translate inwardly along the width direction of the bed body. When the second travel switch detects the position indicator platform, the second electric push rod pushes the backboard down, and the third electric push rod drives the thigh plate and calf The board and feet are raised upwards, and the wheelchair is in a semi-lying position at this time;

S5, then the reduction motor drives the rotating support and the support plate to rotate clockwise 90°, and at this time, the backboard and footboard of the wheelchair are respectively facing the head and the end of the bed;

S6. The first electric push rod pushes the wheelchair to continue to translate inward along the width direction of the bed. When the first travel switch detects the position indicating platform, the second electric push rod pushes the backboard down to be parallel to the ground, and the third electric push rod Drive the thigh plate, calf plate and foot plate down to be parallel to the ground, and the wheelchair returns to the initial state.

Compared with the prior art, the beneficial technical effect of the present invention is:

1. The present invention is an improved technical solution of the previous generation product (202111365860.1). Compared with the electromagnetic lock method, the motor lock will not cause the male end and the female end of the contact power device to be in a virtual connection state, thereby ensuring the safety of the equipment performance and prolong the service life.

2. Compared with the way of using the crank linkage mechanism to drive the wheelchair to rotate, the rigidity of the support tube is greater, which can provide a more stable support force, and the gear transmission mechanism is relatively more stable, which ensures the stability of the wheelchair rotation process and ensures the use safety.

3. Use the fourth travel switch to detect whether the first lifting guard has fallen to the bottom of the guard rail. If the first lifting guard has not fallen to the bottom of the guard rail, the geared motor cannot drive the wheelchair’s support plate to rotate, which can avoid During the rotation of the wheelchair, it interferes with the first lifting guard and collides; the fifth travel switch detects whether the armrest is retracted to the back of the backboard. When the armrest is not retracted to the back of the backboard, the geared motor cannot drive the wheelchair’s support plate to rotate. It can avoid the interference and collision between the armrest and the bed body during the rotation of the wheelchair. On the one hand, it can protect the equipment, and on the other hand, it can prevent the elderly from being injured due to accidents, which further improves the safety of use.

4. Control the posture conversion of the wheelchair by detecting the translational stroke of the wheelchair, and assist in realizing the functions of one-button bed and chair separation and one-button bed and chair reset.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the top view of bed body among the present invention, and wherein mattress is not shown;

Fig. 3 is an axonometric drawing one of the bed body in the present invention;

Fig. 4 is the axonometric drawing two of bed body in the present invention;

Fig. 5 is the enlarged schematic diagram of part A in Fig. 3;

Fig. 6 is a schematic diagram of the structure of the wheelchair in a lying posture;

Fig. 7 is a schematic diagram of the structure of the wheelchair in a semi-lying posture;

Fig. 8 is a structural schematic diagram of a support plate and a curved leg linkage mechanism;

Fig. 9 is a structural schematic diagram of a wheelchair in a sitting posture;

Fig. 10 is a structural schematic diagram of the rotating mechanism.

Reference signs: 100, bed body; 101, support frame; 102, electric control box; 103, mattress; 104, roller table; 110, docking separation device; 111, docking guide rail; 112, docking installation plate; 113, motor Lock; 114, lock ring; 115, first electric push rod; 116, docking slider; 117, position indicator table; 120, contact power device; 121, spring striker; 122, metal contact point; 130, travel detection device ; 131, the first travel switch; 132, the second travel switch; 133, the third travel switch; 140, guard device; 141, the first lift guard; 142, the first guard rail; 144, the second guard rail; 145, the lock; 146, the fourth travel switch; 200, the wheelchair; 201, the support base; 210, the rotation mechanism; 211, the rotation support; 212, the support tube; 213, Reducer motor; 214, transmission gear; 215, driving gear; 220, curved leg linkage mechanism; 221, the third electric push rod; 222, the first connecting rod; 223, the second connecting rod; 224, curved leg connecting plate; 225 , chute; 226, limit ring; 230, back lifting drive mechanism; 231, second electric push rod; 240, armrest device; 241, armrest; 242, hinge; 243, fifth travel switch; 250, support plate 251, back plate; 252, buttock plate; 253, thigh plate; 254, calf plate; 255, foot plate;

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Referring to Fig. 1-Fig. 10, it is an automatic docking and separating device for a nursing bed and chair disclosed in the present invention, which includes a bed body 100 and a wheelchair 200. One side of the bed body 100 on the longitudinal center plane 301 is a docking and separation area, and the other side is a turning and expansion area. zone, wherein the wheelchair 200 can be rotated laterally and separated from the bed body 100 in the docking and separation zone. The wheelchair 200 includes a support plate 250, a support base 201, a rotating mechanism 210, a curved leg linkage mechanism 220, a back-lifting drive mechanism 230 and an armrest 241 device 240, and the wheelchair 200 is passed through the rotating mechanism 210, the curved-leg linkage mechanism 220 and the back-lifting drive mechanism. 230 realizes the posture conversion from lying flat to semi-lying and then to sitting, and the armrest device 240 can realize the opening and retracting of the armrest 241 .

Referring to Figure 1 and Figure 2, the bed body 100 includes a support frame 101, an electric control box 102, a guard plate device 140, a docking and separating device 110 and a contact power supply device 120, and the bed body 100 and the wheelchair 200 are powered on and off through the docking and separating device 110. After the docking and separation of the bed and chair is completed, the posture conversion function of the wheelchair 200 can only be performed when the contact power device 120 is connected.

Referring to Figures 2-5, the docking and separating device 110 includes a docking rail 111 and a docking mounting plate 112 slidingly connected thereto. Preferably, there are two docking rails 111, and the two docking rails 111 are symmetrically arranged on both sides of the wheelchair 200 It is fixedly arranged on the support frame 101 , and the length direction of the docking guide rail 111 is parallel to the width direction 302 of the bed body 100 . The two ends of the docking installation plate 112 in the length direction are provided with docking sliders 116 respectively, and the docking sliders 116 are slidably adapted to the docking guide rail 111 , so that the docking installation plate 112 can slide along the docking guide rail 111 . A motor lock 113 is installed on the side of the docking installation plate 112 facing away from the wheelchair 200, and a lock ring 114 (shown in FIG. 9 ) matched with the motor lock 113 is installed on the side of the support base 201 facing the bed body 100. A lock hole matching the lock ring 114 is opened on the plate 112 , and the shape of the lock hole can be oval, square, waist-shaped, etc., and is not limited here. The support frame 101 is provided with a first electric push rod 115 , one end of the first electric push rod 115 is hingedly connected to the support frame 101 , and the other end is hingedly connected to the docking mounting plate 112 .

Through the locking and unlocking of the motor lock 113 and the locking ring 114, the docking and separation of the bed and chair can be realized, and the first electric push rod 115 can push the docking installation plate 112 to move along the docking guide rail 111, thereby pushing the wheelchair 200 along the width of the bed body 100 Direction 302 translates outward.

In some embodiments, the support frame 101 can also be provided with a roller table 104, and the two roller tables 104 are respectively rollingly connected with the two sides of the support base 201, so as to guide the wheelchair 200, when the bed and chair need to be combined , it is convenient for the nursing staff to align the lock ring 114 with the lock hole when pushing the wheelchair 200 back to the docking and separation area.

4 and 9, the contact power device 120 includes a male end and a female end adapted thereto. The male end is equipped with a spring striker 121, and the female end is equipped with a metal contact 122. The male end is fixed on the support base of the wheelchair 200. On the seat 201 , the female end is fixed to the middle of the docking installation plate 112 . Two motor locks 113 are preferably provided, and the two motor locks 113 are respectively symmetrically arranged on both sides of the female end. When the wheelchair 200 is combined with the bed body 100 , the male end and the female end of the contact power supply device 120 are attracted together, and the spring striker 121 contacts the metal contact 122 to start electrifying the wheelchair 200 .

6 and 7, the support plate 250 includes a back plate 251, a hip plate 252, a thigh plate 253, a calf plate 254 and a foot plate 255. One side of the hip plate 252 is hinged with the back plate 251, and the other side is hinged with the thigh plate 253. , one side of the calf plate 254 is hinged with the thigh plate 253, and the other side is hinged with the foot plate 255. The rear side of the backboard 251 can also be provided with a handle 270 at its upper end. When the wheelchair 200 is rotated into a sitting position, the handle 270 is convenient for the nursing staff to push the wheelchair 200.

Referring to Fig. 10, the rotation mechanism 210 includes a rotation support 211, a support tube 212 and a reduction motor 213, the rotation support 211 is fixed below the buttock plate 252, the support tube 212 and the reduction motor 213 are fixed inside the support base 201, and the support tube 212 The top of the top is rotatably connected with transmission gear 214 through bearings, transmission gear 214 and rotating support 211 are fixedly connected by bolts, and the output shaft of reduction motor 213 is fixed with driving gear 215 that is meshed with transmission gear 214. The reduction motor 213 is electrically connected with the electric control box 102. When the wheelchair 200 needs to be rotated, the reduction motor 213 drives the driving gear 215 to rotate, and through the transmission effect of the driving gear 215 and the driven gear, the rotating support 211 and the support plate 250 are driven to rotate .

Referring to FIG. 9 , the back lifting driving mechanism 230 includes a second electric push rod 231 , one end of the second electric push rod 231 is hinged to the rotating support 211 , and the other end is hinged to the middle of the back plate 251 . Preferably, the second electric push rod 231 is located in the middle of the back plate 251 .

Referring to Fig. 8, the curved leg linkage mechanism 220 includes a third electric push rod 221, a first connecting rod 222 and a second connecting rod 223, and the side of the calf plate 254 close to the thigh plate 253 is hingedly connected with a curved leg connecting plate 224 in the middle. , one end of the third electric push rod 221 is hinged to the rotating support 211 , and the other end is hinged to the curved leg connecting plate 224 . The middle part of the thigh plate 253 is fixedly provided with a chute 225 , and a roller is installed on the third electric push rod 221 , and the roller is slidably connected to the chute 225 . Preferably, the bottom of the chute 225 can be fixedly connected to the limit ring 226, and the third electric push rod 221 passes through the limit space formed by the limit ring 226 and the chute 225, so as to prevent the third electric push rod 221 from Slip in the chute 225. One end of the first connecting rod 222 is connected to the thigh plate 253, and the other end is hinged to the second connecting rod 223. The cross section of the second connecting rod 223 is "L" shaped, and the second connecting rod 223 is far away from the end of the first connecting rod 222. It is hinged with the foot plate 255 .

Both the second electric push rod 231 and the third electric push rod 221 are electrically connected to the electric control box 102. When the back and legs need to be lifted, the second electric push rod 231 and the third electric push rod 221 act synchronously, and the second electric push rod 221 moves synchronously. The push rod 231 pushes the backboard 251 to rotate and raise, and the third electric push rod 221 drives the thigh board 253, the calf board 254 and the foot board 255 to raise, and now the wheelchair 200 is in a semi-lying position; then the second electric push rod 231 and The third electric push rod 221 continues to move, the backboard 251 continues to be raised, and the roller continues to roll along the chute 225 at the same time. Under the linkage action of 223, the calf plate 254 is inclined downward to form a suitable angle with the thigh plate 253. At this time, the wheelchair 200 is in a sitting posture, assisting the elderly to complete the action of lifting the back and bending the legs. At this time, the back plate 251, the thigh plate 253 and the The inclination angle of the calf board 254 conforms to ergonomics.

Referring to FIG. 9 , the armrest device 240 includes an armrest 241 and a hinge 242 , the hinge 242 is fixed on one side of the backboard 251 , and the armrest 241 is rotatably connected to the hinge 242 through a rotating shaft. Nurses rotate the armrest 241 in the horizontal direction, and then rotate the armrest 241 in the vertical direction to unfold the armrest 241, which is convenient for the elderly to use; In the process of converting to a sitting posture, the armrest 241 will not interfere with the bed body 100 . The fifth travel switch 243 is arranged on the backboard 251 , the fifth travel switch 243 is electrically connected to the electric control box 102 , and the fifth travel switch 243 is used to detect whether the armrest 241 is retracted to the rear side of the backboard 251 . When the armrest 241 is not retracted to the rear side of the backboard 251, the geared motor 213 cannot drive the support plate 250 of the wheelchair 200 to rotate, so as to prevent the armrest 241 from interfering with the bed body 100 during the rotation of the wheelchair 200. On the one hand, it can protect the equipment. On the one hand, it prevents the elderly from being injured in accidents.

Referring to FIG. 2 , a stroke detection device 130 is provided on the support frame 101 , and the pose conversion of the wheelchair 200 is controlled by the detected translation stroke of the wheelchair.

The travel detection device 130 includes a first travel switch 131, a second travel switch 132 and a third travel switch 133 fixed on the support frame 101. The first travel switch 131, the second travel switch 132 and the third travel switch 133 are arranged along the bed The body width direction 302 is arranged in sequence and is electrically connected with the electric control box 102. A position indicating table 117 is arranged on the docking mounting plate 112. The first travel switch 131, the second travel switch 132 and the third travel switch 133 are all used for detecting The position indicates the translational distance of the stage 117 .

In the initial state, the first travel switch 131 is facing the position indicating platform 117; the distance between the first travel switch 131 and the second travel switch 132 is greater than 1/2 of the backboard 251 width, so that the support plate 250 of the wheelchair 200 When rotating, it will not interfere with the support frame 101 of the bed body 100 .

With reference to Fig. 3, guard plate device 140 comprises the first lift guard plate 141 that is arranged on the docking separation area and the first guard plate track 142 that is slidably connected with it, and the second lift guard plate 143 that is arranged on the stand-up expansion area and is connected with it. The second guard rail 144 that is slidably connected with each other, the bottom of the first lift guard 141 and the second lift guard 143 is provided with a lock 145, the upper and lower ends of the first guard track 142 and the second guard track 144 Card slots matching the lock buckles 145 are respectively provided, and the first lift guard 141 and the second lift guard 143 are locked in the draw slots through the lock buckles 145 . Preferably, there are two first lift guards 141, which are respectively located near the head of the bed and the end of the bed. In some embodiments, both the first lifting guard 141 and the second lifting guard 143 are provided with through slots, which can reduce weight and save costs on the one hand, and facilitate operation by personnel on the other hand.

The bottom of the first guard rail 142 is provided with a fourth travel switch 146, the fourth travel switch 146 is electrically connected to the electric control box 102, and the fourth travel switch 146 is used to detect whether the first lifting guard 141 has fallen to the guard rail bottom end. If the first lifting guard 141 does not descend to the bottom of the guard rail, the geared motor 213 cannot drive the support plate 250 of the wheelchair 200 to rotate, so as to prevent the support plate 250 from interfering with the first lifting guard 141 during rotation and colliding.

Referring to Fig. 1 , in some embodiments, a mattress 103 is laid on the bed body 100, and a support pad 260 is provided on the support plate 250 of the wheelchair 200. The support pad 260 is preferably sewn from a plurality of flexible pads, and each flexible pad The position corresponds to the position of each component plate of the support plate 250, and the size of each flexible pad is equivalent to the size of each component plate of the support plate 250. The mattress 103 and the support pad 260 are made of flexible materials and have a certain thickness, so as to ensure the comfort of the elderly. comfort.

The working principle of the nursing bed and chair automatic docking and separating device 110 is as follows:

In the initial state, there is no angle change between the flexible pads of the mattress 103 and the support pad 260 and are parallel to the ground, the support plate 250 is parallel to the ground, the motor lock 113 device is in the working state, and the bed body 100 is connected to the wheelchair through the contact power supply device 120. 200 for power up.

When the old man needs to sit sideways and get out of bed, the electric control box 102 controls the second electric push rod 231 and the third electric push rod 221 to act synchronously, the second electric push rod 231 pushes the backboard 251 to rotate and raise, and the third electric push rod 221 Drive the thigh board 253, the calf board 254 and the foot board 255 to raise, and now the wheelchair 200 is in a semi-lying posture.

Then control the action of the first electric push rod 115 to push the wheelchair 200 to move outwards for a certain distance along the width direction 302 of the bed body. 215 rotates, and through the transmission effect of driving gear 215 and driven gear, drives rotating support and support plate 250 to rotate counterclockwise 90 °, and now the back plate 251 of wheelchair 200 is inward, and foot plate 255 is outward. Then control the second electric push rod 231 and the third electric push rod 221 to continue to move, the backboard 251 continues to be raised to 75°, and the rollers continue to roll along the chute 225 at the same time. Under the combined action of the first link 222 and the second link 223, the calf plate 254 is inclined downward to form a suitable angle with the thigh plate 253. At this time, the wheelchair 200 is in a sitting posture, assisting the elderly to complete the lifting of the back and bending the legs. In the action, the included angle between the thigh board 253 and the horizontal plane is 12°, and the inclination angles of the back board 251, the thigh board 253 and the calf board 254 conform to ergonomics.

When the wheelchair 200 is in the sitting posture, it can enter the bed-chair separation state. Control the first electric push rod 115 to push the wheelchair 200 to continue to translate outward along the bed width direction 302. When the third travel switch 133 detects the position indicating platform 117, the motor lock 113 is powered off, and the motor lock 113 and the lock ring 114 are in the unlocked state. state, the wheelchair 200 is pulled out along the direction of the roller table 104 by the nurse, and there is no contact between the male end and the female end of the contact-type power supply device 120, so the power supply is stopped.

After completing the bed and chair separation state, you can enter the bed and chair docking state. The nursing staff inserts the lock ring 114 into the lock hole and at the same time inserts the male end into the female end to return the wheelchair 200 to its original position. At this time, the contact power supply device 120 starts to supply power to the wheelchair 200 . The third travel switch 133 detects the position indicating platform 117, the motor lock 113 is energized, and the motor lock 113 and the lock ring 114 are in a locked state.

The electric control box 102 controls the first electric push rod 115 to push the wheelchair 200 to translate inwardly along the bed width direction 302, and when the second travel switch 132 detects the position indicating platform 117, the electric control box 102 controls the second electric push rod 231 to push The backboard 251 is lowered to a suitable angle, and the third electric push rod 221 drives the thigh board 253, the calf board 254 and the foot board 255 to raise upwards at a suitable angle, and the wheelchair 200 is in a semi-lying position at this time. Then the reduction motor 213 drives the driving gear 215 to rotate, and through the transmission effect of the driving gear 215 and the driven gear, the rotating support 211 and the supporting plate 250 are driven to rotate clockwise by 90°. The head and foot of the bed. Then the electric control box 102 controls the first electric push rod 115 to push the wheelchair 200 to continue to translate inward along the bed width direction 302 .

When the first travel switch 131 detects the position indicating platform 117, the electric control box 102 controls the second electric push rod 231 to push the backboard 251 to be lowered to be parallel to the ground, and the third electric push rod 221 drives the thigh plate 253, the calf plate 254 and The foot plate 255 is lowered to be parallel to the ground, and the wheelchair 200 returns to the initial state.

The electric control box 102 is provided with a communication module, and the electric control box 102 is connected with an external controller through the communication module. The communication connection mode includes infrared remote control and wireless remote control. One-button bed and chair separation, one-button bed and chair reset, back lifting, leg bending and other functions are realized through buttons and touch controls.

When the wheelchair 200 is in the sitting position, if the fourth travel switch 146 detects that the first lifting guard 141 has dropped to the bottom of the first guard rail 142 and the fifth travel switch 243 detects that the armrest 241 has retracted to the backboard 251 rear side, then the decelerating motor 213 can drive the wheelchair 200 to rotate; if the fourth travel switch 146 detects that the first lift guard 141 has not fallen to the bottom of the first guard rail 142 and/or the fifth travel switch 243 detects that the armrest 241 has not If it is retracted to the rear side of the backboard 251, the reduction motor 213 cannot drive the wheelchair 200 to rotate, that is, the one-key separation or one-key reset function cannot be realized.

The present invention also discloses a docking method for an automatic docking and separating device for nursing beds and chairs, which includes the following steps:

S1. When the bed and chair are separated, the nurse inserts the lock ring 114 into the lock hole and inserts the male end into the female end to return the wheelchair 200. At this time, the contact power device 120 is in the power-on state, and the third travel switch 133 detects The position indicating platform 117, the motor lock 113 and the lock ring 114 are in a locked state;

S2, the fourth travel switch 146 detects the position of the first lifting guard 141, if the first lifting guard 141 has dropped to the bottom of the first guard rail 142, then enter the next step;

S3, the fifth travel switch 243 detects the position of the armrest 241, if the armrest 241 has been retracted to the rear side of the backboard 251, then enter the next step;

S4. The first electric push rod 115 pushes the wheelchair 200 to translate inwardly along the bed width direction 302 . The push rod 221 drives the thigh plate 253, the calf plate 254 and the foot plate 255 to lift upwards, and the wheelchair 200 is in a semi-lying posture at this time;

S5, then the reduction motor 213 drives the rotating support 211 and the support plate 250 to rotate clockwise 90°, and now the back plate 251 and the foot plate 255 of the wheelchair 200 are respectively facing the head and the end of the bed;

S6. The first electric push rod 115 pushes the wheelchair 200 to continue to translate inwardly along the bed width direction 302. When the first travel switch 131 detects the position indicating platform 117, the second electric push rod 231 pushes the backboard 251 down to the ground. Parallel, the third electric push rod 221 drives the thigh plate 253, the calf plate 254 and the foot plate 255 to be lowered to be parallel to the ground, and the wheelchair 200 returns to the initial state.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. .

Claims (10)

1. The automatic docking and separating device for the nursing bed and chair comprises a bed body (100) and a wheelchair (200), wherein one side of the bed body (100) on a longitudinal center surface (301) is a docking and separating area, the other side is a turning-over capacity expanding area, the wheelchair (200) can laterally rotate in the docking and separating area and is separated from the bed body (100),

the wheelchair (200) comprises a supporting plate (250), a supporting base (201), a rotating mechanism (210), a leg bending linkage mechanism (220), a back lifting driving mechanism (230) and an armrest device (240), wherein the wheelchair (200) realizes the pose conversion from lying to semi-lying to sitting through the rotating mechanism (210), the leg bending linkage mechanism (220) and the back lifting driving mechanism (230), and the armrest device (240) can realize the opening and the retraction of the armrest (241);

the bed body (100) comprises a supporting frame (101), an electric cabinet (102), a guard plate device (140), a butt joint separation device (110) and a contact type electrifying device (120), the butt joint and separation of the bed body (100) and a wheelchair (200) are completed through the on-off of the butt joint separation device (110), and the pose conversion function of the wheelchair (200) can only be performed under the on state of the contact type electrifying device (120);

the support frame (101) is provided with a travel detection device (130), and the position and posture conversion of the wheelchair (200) is controlled by detecting the translation travel of the wheelchair (200).

2. The automatic docking and separating device of nursing bed chairs according to claim 1, wherein the docking and separating device (110) comprises a docking guide rail (111) and a docking mounting plate (112) connected with the docking guide rail in a sliding manner, the docking guide rail (111) is fixedly arranged on a supporting frame (101), a motor lock (113) is arranged on one side of the docking mounting plate (112) facing away from a wheelchair (200), a locking ring (114) matched with the motor lock (113) is arranged on one side of a supporting base (201) facing towards a bed body (100), a first electric push rod (115) is arranged on the supporting frame (101), one end of the first electric push rod (115) is hinged with the supporting frame (101), and the other end of the first electric push rod is hinged with the docking mounting plate (112);

the docking and the separation of the bed and chair are realized through the locking and the unlocking of the motor lock (113) and the lock ring (114), and the docking mounting plate (112) is driven by the first electric push rod (115) to move along the docking guide rail (111), so that the wheelchair (200) is pushed to translate along the width direction (302) of the bed body.

3. The automatic docking and separating device for nursing bed chairs according to claim 1, wherein the travel detection device comprises a first travel switch (131), a second travel switch (132) and a third travel switch (133) which are fixedly arranged on the supporting frame (101), the first travel switch (131), the second travel switch (132) and the third travel switch (133) are sequentially arranged along the width direction (302) of the bed body and are electrically connected with the electric cabinet (102), the docking and mounting plate (112) is provided with a position indication table (117), and the first travel switch (131), the second travel switch (132) and the third travel switch (133) are used for detecting the translation distance of the position indication table (117).

4. The automatic docking and undocking apparatus of a nursing bed chair as claimed in claim 1, wherein the supporting plate (250) includes a back plate (251), a hip plate (252), a thigh plate (253), a calf plate (254) and a foot plate (255), one side of the hip plate (252) is hinged with the back plate (251), the other side is hinged with the thigh plate (253), one side of the calf plate (254) is hinged with the thigh plate (253), and the other side is hinged with the foot plate (255).

5. The automatic docking and disengaging gear of nursing bed chairs according to claim 4, characterized in that the rotating mechanism (210) comprises a rotating support, a supporting tube (212) and a gear motor (213), the rotating support is fixed below the hip plate (252), the supporting tube (212) and the gear motor (213) are fixed inside the supporting base (201), a transmission gear (214) fixedly connected with the rotating support is rotatably connected to the top of the supporting tube (212), and a driving gear (215) meshed and connected with the transmission gear (214) is fixed to an output shaft of the gear motor (213).

6. The automatic docking and undocking apparatus as claimed in claim 4, wherein the back lifting driving mechanism (230) comprises a second electric push rod (231), wherein one end of the second electric push rod (231) is hinged to the rotating support (211), and the other end is hinged to the middle of the back plate (251).

7. The automatic docking and undocking apparatus of nursing bed chair according to claim 4, wherein the leg bending linkage mechanism (220) comprises a third electric push rod (221), a first connecting rod (222) and a second connecting rod (223), wherein one side of the lower leg plate (254) close to the thigh plate (253) is hinged with a leg bending connecting plate (224), one end of the third electric push rod (221) is hinged with a rotating support (211), and the other end is hinged with a Qu Tui connecting plate (224); a chute (225) is fixedly arranged in the middle of the thigh plate (253), a roller is arranged on the third electric push rod (221), and the roller is in sliding connection with the chute (225); one end of the first connecting rod (222) is connected with the thigh plate (253), the other end of the first connecting rod is hinged with the second connecting rod (223), and the second connecting rod (223) is hinged with the foot plate (255).

8. The automatic docking and separating device of nursing bed chairs according to claim 1, wherein the guard plate device (140) comprises a first lifting guard plate (141) arranged in a docking and separating area and a first guard plate track (142) connected with the first lifting guard plate in a sliding manner, a second lifting guard plate (143) arranged in a turning-over and expanding area and a second guard plate track (144) connected with the second lifting guard plate in a sliding manner, lock catches (145) are arranged at the bottoms of the first lifting guard plate (141) and the second lifting guard plate (143), and clamping grooves matched with the lock catches (145) are respectively arranged at the upper end and the lower end of the first guard plate track (142) and the lower end of the second guard plate track (144), and the first lifting guard plate (141) and the second lifting guard plate (143) are clamped in the clamping grooves through the lock catches (145); and a fourth travel switch (146) is arranged at the bottom of the first guard board track (142), and the fourth travel switch (146) is used for detecting whether the first lifting guard board (141) descends to the bottom end of the guard board track.

9. The automatic docking and detaching device for a nursing bed chair according to claim 1, wherein the armrest (241) device (240) comprises an armrest (241) and a hinge (242), the hinge (242) is fixed on one side of the back plate (251), the armrest (241) is rotatably connected to the hinge (242), a fifth travel switch (243) is provided on the back plate (251), and the fifth travel switch (243) is used for detecting whether the armrest (241) is retracted on the back side of the back plate (251).

10. The docking method of the automatic docking and separating device for the nursing bed and chair is characterized by comprising the following steps of:

s1, when the bed and chair are in a separated state, a nursing staff returns the wheelchair (200), the contact type electrifying device (120) is in an electrifying state, the third travel switch (133) detects the position indication table (117), and the motor lock (113) and the lock ring (114) are in a locking state;

s1, when the bed and chair are in a separated state, a nursing staff inserts a lock ring (114) into a lock hole, and simultaneously inserts a male end into a female end to enable a wheelchair (200) to be reset, at the moment, a contact type electrifying device (120) is in an electrifying state, a third travel switch (133) detects a position indication table (117), and a motor lock (113) and the lock ring (114) are in a locking state;

s2, detecting the position of a first lifting guard plate (141) by a fourth travel switch (146), and entering the next step if the first lifting guard plate (141) is lowered to the bottom end of a first guard plate track (142);

s3, detecting the position of the handrail (241) by a fifth travel switch (243), and if the handrail (241) is retracted to the rear side of the back plate (251), entering the next step;

s4, the first electric push rod (115) pushes the wheelchair (200) to translate inwards along the width direction (302) of the bed body, when the second travel switch (132) detects the position indication table (117), the second electric push rod (231) pushes the backboard (251) to be lowered, and the third electric push rod (221) drives the thigh board (253), the shank board (254) and the foot board (255) to be lifted upwards, so that the wheelchair (200) is in a semi-lying position;

s5, driving a speed reducing motor (213) to drive a rotary support (211) and a supporting plate (250) to rotate 90 degrees clockwise, wherein a back plate (251) and a foot plate (255) of the wheelchair (200) face to the head of a bed and the tail of the bed respectively;

s6, the first electric push rod (115) pushes the wheelchair (200) to continuously translate inwards along the width direction (302) of the bed body, when the first travel switch (131) detects the position indication table (117), the second electric push rod (231) pushes the backboard (251) to be lowered to be parallel to the ground, the third electric push rod (221) drives the thigh board (253), the shank board (254) and the foot board (255) to be lowered to be parallel to the ground, and the wheelchair (200) returns to an initial state.

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