CN113040551B - Multifunctional chair - Google Patents

Abstract

The invention discloses a multifunctional chair, comprising: a base plate, a leg posture adjustment mechanism, a back wiping mechanism and a mobile support mechanism, a seat cushion is placed on the leg posture adjustment mechanism, and the mobile support mechanism includes an automatic braking module. The multifunctional chair has a leg position adjustment function. By controlling the extension and contraction of the electric push rod of the leg position adjustment mechanism, the seat cushion can rotate around the hinge at a certain angle, changing the leg position of the elderly, and assisting the elderly to stand up after going to the toilet, reducing the Risk of muscle damage in the elderly and prevention of inability to stand up. After the old man sits on the chair, the support spring of the automatic brake module is contracted by the gravity of the person, so that the directional wheel is retracted into the square groove, and the square groove is in contact with the ground to achieve a fast and stable braking effect. Compared with the foot brake, it avoids the risk of forgetting to step on the brake and cause the chair to move, and also makes the operation easier.

Description

a multifunctional chair

technical field

The invention relates to the technical field of aging machines, in particular to a multifunctional chair.

Background technique

According to statistics, the proportion of the elderly population living alone in my country is increasing. Due to the decline of various physical functions, there are many safety hazards and inconveniences for the elderly when they are active at home alone. For example, the bathroom floor is wet and slippery when taking a bath, which can easily cause the elderly to fall and struggle to scrub their backs; the elderly have low bone density, poor cardiovascular regulation response, and aging muscles and other organs. Therefore, cerebral ischemia is prone to occur when standing up after sitting in the toilet for a long time. A little carelessness can cause muscle damage or even fracture, which brings great difficulties and risks to the independent life of the elderly.

In order to solve the above problems, since the 21st century, various auxiliary bathing equipments at home and abroad have come out constantly, but because of the high price, this type of aiding equipment for the elderly has not been widely used since it was put on the market.

The invention patent of CN107638253A "a mechanical system of a multifunctional electric bath chair" can change the back posture of a person by adjusting the angle between the backrest of the bath chair and the seat board, and realize the transformation of sitting and lying postures during bathing, but not It has the ability to adjust the posture of the legs when people change from a sitting posture to a standing posture when going to the toilet, and the brake of the device adopts the way of stepping on the foot. When the elderly use it alone, it is easy to forget to step on the brake, which has certain safety hazards. Patent No. CN203107475U's invention patent "a multi-functional nursing chair" can slide up and down along the curved support frame on the chair, so as to change the height of the seat while changing the angle of the seat during the lifting process, so as to change the sitting posture and facilitate nursing care Nursing staff place and take out the bedpan when going to the toilet and clean the old man in all directions when taking a bath. However, when the device rises, the adjustment of the old man's posture is backward, which is different from when the old man who lives alone stands up after using the toilet. The posture of leaning forward is different, and the cleaning of the old man's back during bathing requires the help of the nursing staff. In addition, both of the above two devices are bulky and cannot be folded, making it inconvenient to store and carry.

Contents of the invention

In view of this, the purpose of this design is to design a suitable for the elderly living alone in view of the inconvenience of living alone when sitting and standing up when going to the toilet for a long time, standing on wet and slippery ground when bathing, easy to fall, and difficult back scrubbing. A multifunctional chair that can be folded and used to assist toileting and bathing can reduce the safety risks of the elderly when they live alone and improve their quality of life.

The present invention solves the above technical problems by the following technical means:

A multifunctional chair, comprising: a base plate, a leg posture adjustment mechanism, a back wiping mechanism and a mobile support mechanism;

A first through hole is opened in the middle of the bottom plate;

The leg posture adjustment mechanism includes a turning plate and armrest units located on both sides of the turning plate, one side of the turning plate is rotatably connected to the bottom plate; An electric push rod hinged at one end, the bottom of the electric push rod is rotatably mounted on the bottom plate, and the other end of the handrail rod is fixedly connected to the flip plate;

A second through hole corresponding to the first through hole is opened in the middle of the flip plate, and a seat cushion is movably placed on the flip plate;

The back wiping mechanism includes a door-shaped support frame and a back wiping assembly that is arranged on the support frame and can reciprocate up and down. The bottom of the support frame is rotatably mounted on the bottom plate;

The mobile support mechanism includes two oppositely arranged front foot supports and two oppositely arranged rear foot supports; the front foot supports include a vertically arranged first support bar, an automatic The brake module and the directional wheel installed at the bottom of the automatic brake module; the rear foot support includes a vertically arranged second support rod and a universal wheel arranged at the bottom of the second support rod; the first support rod The top of the top and the top of the second support rod are connected with the bottom plate.

Further, the automatic braking module includes a square groove and a first mounting plate and a second mounting plate arranged up and down opposite to each other;

The top of the square groove is sealed, and the outer wall of the top of the square groove is in contact with the bottom of the first mounting plate; the second mounting plate is located in the bottom opening of the square groove;

The first mounting plate and the second mounting plate are connected by a guide rod, the bottom end of the guide rod is fixedly connected to the second mounting plate, and the top end passes through the top of the square groove from the first mounting plate. A mounting plate slides through, and the top end of the guide rod is screwed with a limit nut above the first mounting plate;

A supporting spring is arranged between the second mounting plate and the inner wall at the top of the square groove;

The directional wheel is mounted on the bottom of the second mounting plate, and the first support rod is connected to the first mounting plate.

Further, both the first support rod and the second support rod are detachably connected to the bottom plate;

The bottom of the bottom plate is provided with a connection sleeve corresponding to the first support rod and the second support rod one by one, and the first support rod and the second support rod are inserted into the corresponding connection sleeve and passed through The locking piece is locked with the connecting sleeve.

Further, the locking member includes a pull rod and an insert connected at both ends of the pull rod, the insert includes a coaxially connected fork pin and a hook pin, and the top of the first support rod is connected to the hook pin through the hook pin. The connection sleeve is locked, and the top of the second support rod is locked with the connection sleeve through the fork pin;

The fork-shaped pin is movably installed in the spring sleeve, and an active groove for the reciprocating sliding of the fork-shaped pin is opened in the spring sleeve, and the movable groove is sealed and arranged near one end of the hook-shaped pin. A return spring is sheathed on the pin, and the return spring is located in the movable groove;

The spring sleeve is connected with the connecting sleeve on which the second support rod is installed.

Further, the support frame includes two opposite support tubes and a fixing plate connected to the top ends of the two support tubes;

The bottom of the support tube is rotatably connected to the bottom plate;

The back wiping assembly includes a longitudinally arranged synchronous belt, a back wiping plate mounted on the synchronous belt, and a motor that drives the synchronous belt to reciprocate up and down;

The synchronous belt is installed in the installation groove through bearing rotation;

The motor is fixedly mounted on the fixed plate through a U-shaped hoop;

The top of the mounting groove is fixedly installed in the middle of the bottom of the fixing plate, and the bottom is rotatably connected with the bottom plate.

Further, the support tube is a telescopic structure, including a seat tube and a round tube inserted in the seat tube, the round tube and the seat tube are fixed by a seat tube clamp, and the top end of the round tube is The blue seat is connected to the fixed plate, the round tube is installed in the flange seat, and the seat tube is rotatably connected to the bottom plate;

The bottom of the installation groove is slidably installed in the chute, the chute is U-shaped, axially and longitudinally extended, and the side wall of the chute is provided with a long strip-shaped, longitudinally extending adjustment hole, the installation groove It is fixed with the chute through the elastic adjuster pierced in the adjustment hole, and the elastic adjuster is screwed on the groove wall of the installation groove; the bottom of the chute is connected with the bottom plate through a U-shaped piece connected, the bottom of the chute is rotatably connected with the U-shaped piece.

Further, the seat tube is rotatably connected with the base plate through a rotating member;

The rotating member includes a heightening block and a folding hinge arranged on the heightening block, and the bottom of the seat tube is connected to the folding hinge.

Further, a hook for hanging the cushion is provided at the bottom of one side of the bottom plate.

Further, a control box is arranged on the bottom plate, and a controller is installed in the control box, and the controller is electrically connected with the electric push rod and the back rubbing assembly.

Beneficial effects of the present invention:

1. The multi-functional chair has the function of adjusting the posture of the legs. Electric push rods are installed on both sides of the seat cushion to control the expansion and contraction of the electric push rod to achieve a certain angle of rotation of the seat cushion around the hinge, changing the posture of the legs of the elderly, and assisting the elderly to go to the toilet Stand up later, reduce the risk of muscle damage and prevent the elderly from being unable to stand up.

2. The automatic brake module can automatically brake after the old man sits on the chair. After the old man sits on the chair, the support spring of the automatic braking module shrinks under the action of gravity, so that the directional wheel is retracted into the square groove, and the square groove is in contact with the ground to achieve a fast and stable braking effect. Compared with the foot brake, it avoids the risk of forgetting to step on the brake and cause the chair to move, and also makes the operation easier.

3. When wiping the back, the rotation of the synchronous pulley is controlled by the forward and reverse rotation of the motor, so that the back wiping plate installed on the belt of the synchronous pulley reciprocates, thereby realizing the function of cleaning the back of the elderly. In addition, by adjusting the position of the square groove on the back-wiping adjustment module in the chute, the position of the reciprocating motion center of the back-wiping board can be changed to meet the needs of elderly people of different heights for the position of the back-wiping board.

4. This multifunctional chair can be easily folded. The front foot support and the rear foot support can be removed from the bottom plate, and the back wiping mechanism can be folded over the seat cushion through folding hinges, thereby saving space and being easy to carry.

Description of drawings

Fig. 1 is the structural representation of a kind of multifunctional chair of the present invention;

Fig. 2 is the structural representation of the base plate of a kind of multifunctional chair of the present invention;

Fig. 3 is a structural schematic diagram of a mobile support mechanism of a multifunctional chair of the present invention;

Fig. 4 is a structural schematic diagram of a front foot support of a multifunctional chair of the present invention;

Fig. 5 is a structural schematic diagram of an automatic braking module of a multifunctional chair of the present invention;

Fig. 6 is a structural schematic diagram of a rear foot support of a multifunctional chair of the present invention;

Fig. 7 is a structural schematic diagram of a back wiping mechanism of a multifunctional chair of the present invention;

Fig. 8 is a structural schematic diagram of a leg posture adjustment mechanism of a multifunctional chair of the present invention;

Fig. 9 is a schematic diagram of the connection structure between the mobile support mechanism and the bottom plate of a multifunctional chair of the present invention;

Fig. 10 is a first schematic diagram of the installation structure of a locking member of a multifunctional chair of the present invention;

Fig. 11 is a second schematic diagram of the installation structure of a locking member of a multifunctional chair of the present invention;

Fig. 12 is a structural schematic diagram of a plug-in of a multifunctional chair of the present invention;

Fig. 13 is a structural schematic diagram of a spring cover of a multifunctional chair according to the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with accompanying drawing and specific embodiment:

As shown in FIGS. 1-13 , a multifunctional chair of the present invention includes a base plate 100 , a leg posture adjustment mechanism 200 , a back wiping mechanism 300 and a moving support mechanism 400 .

Specifically, a first through hole 101 is opened in the middle of the bottom plate 100, and the first through hole 101 is used by the elderly when going to the toilet.

The leg posture adjustment mechanism 200 includes an overturning plate 201 and armrest units located symmetrically on both sides of the overturning plate 201 , and one side of the overturning plate 201 is rotatably connected to the bottom plate 100 through a hinge. The handrail unit includes a handrail bar 202 and an electric push rod 203 hinged to one end of the handrail bar 202. The bottom of the electric push rod 203 is installed on the bottom plate 100 through the rotation of the base. Fixed connection. The distance between the two electric push rods 203 is slightly larger than the shoulder width of a normal build. The leg posture adjustment mechanism 200 controls the two electric push rods 203 to expand and contract at the same time to drive the armrest bar 202 to drive the turning plate 201 to rotate at a certain angle, so as to change the posture of the legs of the elderly and realize the function of assisting the elderly to stand up after going to the toilet.

A second through hole 204 corresponding to the first through hole 101 is opened in the middle of the turning plate 201, and a seat cushion 500 is movable on the turning plate 201. The seat cushion 500 is suitable for the elderly when taking a shower, and the seat cushion 500 can be removed when going to the toilet . A hook 106 for hanging the seat cushion 500 is provided at the bottom of one side of the bottom plate 100 .

The back wiping mechanism 300 includes a door-shaped support frame and a back wiping assembly arranged on the support frame and capable of reciprocating up and down. The bottom of the support frame is rotatably mounted on the bottom plate 100 .

Specifically, the support frame includes two opposite support tubes and a fixing plate 301 connected to the top ends of the two support tubes, and the bottom of the support tubes is rotatably connected to the bottom plate 100 .

The back wiping assembly includes a synchronous belt 302 arranged longitudinally, a back wiping plate 303 installed on the synchronous belt 302 and a motor 304 driving the synchronous belt 302 to reciprocate up and down. The synchronous belt 302 is rotatably installed in the installation groove 306 through the bearing 305 . The motor 304 is fixedly installed on the fixing plate 301 through a U-shaped hoop 307 . The top of the mounting groove 306 is fixedly installed in the middle of the bottom of the fixing plate 301 , and the bottom is rotatably connected with the bottom plate 100 . The motor 304 drives the synchronous belt 302 to move, and controlling the forward and reverse turns of the motor 304 can make the back wiping plate 303 move back and forth up and down to realize the back wiping function.

Further, the support tube is a telescopic structure, including a seat tube 308 and a round tube 309 inserted in the seat tube 308 , and the round tube 309 and the seat tube 308 are fixed by a seat tube clip 310 . The insertion length of the round tube 309 can be adjusted at will, and the seat tube 308 and the round tube 309 are fixed by the seat tube clip 310 after adjustment. The top of the round tube 309 is connected to the fixed plate 301 through the flange seat 311 , the round tube 309 is installed in the flange seat 311 , and the seat tube 308 is connected to the bottom plate 100 in rotation.

The bottom of the installation groove 306 is slidably installed in the chute 312. The chute 312 is U-shaped and extends axially and longitudinally. The slot 312 is fixed by an elastic adjuster 314 pierced in the adjustment hole 313 , and the elastic adjuster 314 is screwed on the groove wall of the installation groove 306 . The bottom of the chute 312 is connected to the bottom plate 100 through a U-shaped piece 315 , and the bottom of the chute 312 is rotatably connected to the U-shaped piece 315 .

After turning the tightness adjuster 314, adjust the height together with the supporting tube, and adjust the relative position of the installation groove 306 in the chute 312, thereby adjusting the height of the center of the synchronous belt 302, that is, adjusting the center height of the back wiping assembly. The center of the back wiping range can be Adjustable for people of different heights.

Specifically, the seat tube 308 is rotatably connected to the bottom plate 100 through a rotatable member. The rotating part includes a heightening block 316 and a folding hinge 317 arranged on the heightening block 316 , and the bottom of the seat tube 308 is connected to the folding hinge 317 . The connecting shaft between the seat tube 308 and the folding hinge 317 is arranged coaxially with the connecting shaft between the sliding groove 312 and the U-shaped piece 315, so that the entire back wiping mechanism 300 can be folded to reduce the volume.

The mobile support mechanism 400 includes two oppositely arranged front foot supports 410 and two oppositely arranged rear foot supports 420 . Wherein, the front foot support 410 includes a first support bar 411 vertically arranged, an automatic braking module 412 installed at the bottom of the first support bar 411 and a directional wheel 413 installed at the bottom of the automatic braking module 412 . The rear foot support 420 includes a vertically arranged second support rod 421 and a universal wheel 422 arranged at the bottom of the second support rod 421 . Top ends of the first support rod 411 and the second support rod 421 are detachably connected to the bottom plate 100 .

Specifically, the automatic braking module 412 includes a square slot 4121 and a first mounting plate 4122 and a second mounting plate 4123 arranged up and down opposite to each other. The top of the square groove 4121 is sealed, and the outer wall of the top of the square groove 4121 is in contact with the bottom of the first mounting plate 4122; the second mounting plate 4123 is located in the bottom opening of the square groove 4121; The guide rod 4124 is connected, the bottom end of the guide rod 4124 is fixedly connected to the second mounting plate 4123, the top end passes through the top of the square groove 4121 and slides out from the first mounting plate 4122, and the top end of the guide rod 4124 is on the first mounting plate The limit nut 4125 is screwed on the top of the 4122. A supporting spring 4126 is arranged between the second mounting plate 4123 and the inner wall of the top of the square groove 4121. The supporting spring 4126 makes the outer wall of the top of the square groove 4121 contact with the lower surface of the first mounting plate 4122 all the time, and the bottom of the supporting spring 4126 is in contact with the second mounting plate 4123. Welding fixed. The orientation wheel 413 is installed on the bottom of the second mounting plate 4123 , and the first support rod 411 is connected to the first mounting plate 4122 .

The supporting spring 4126 can bear the self-weight of the multifunctional chair, and the bottom of the lower groove 4121 does not contact the bottom surface when there is no person sitting in the multifunctional chair. In the square groove 4121 , the bottom of the square groove 4121 is in contact with the ground to achieve the purpose of braking the directional wheel 413 .

The bottom of the bottom plate 100 is provided with a connection sleeve 102 corresponding to the first support rod 411 and the second support rod 421 one by one. The first support rod 411 and the second support rod 421 are inserted into the corresponding connection sleeve 102 and locked The piece 103 is locked with the connecting sleeve 102.

Specifically, the locking member 103 includes a pull rod 1031 and an insert connected to both ends of the pull rod 1031. The insert includes a fork pin 1032 and a hook pin 1033 coaxially connected by a coupling. The connecting sleeve 102 is locked, and the top of the second support rod 421 is locked with the connecting sleeve 102 through the fork pin 1032 .

The fork pin 1032 is movably installed in the spring sleeve 104 , and the spring sleeve 104 is connected with the connecting sleeve 102 on which the second support rod 421 is installed. The spring sleeve 104 is provided with a movable groove 105 for reciprocating sliding of the fork-shaped pin 1032. The movable groove 105 is sealed and arranged near one end of the hook-shaped pin 1033. The fork-shaped pin 1032 is covered with a reset spring 1034, and the reset spring 1034 is located in the movable groove 105. within the settings.

Pulling the pull rod 1031 can make the hook pin 1033 and the fork pin 1032 disengage from the corresponding connection sleeve 102, so that the first support rod 411 and the second support rod 421 can be quickly removed from the corresponding connection sleeve 102, which is convenient for users to disassemble. install operation. Fork-shaped pin 1032 rod portion is covered with back-moving spring 1034 and is installed in spring sleeve 104, and spring sleeve 104 plays guiding and limiting effect to the rod portion of fork-shaped pin 1032, and when releasing pull rod 1031, the effect of elastic force of reset spring 1034 can make The hook pin 1033 and the fork pin 1032 are reset to achieve the purpose of fixing the first support rod 411 and the second support rod 421 to the corresponding connecting sleeve 102 respectively.

Specifically, a control box 107 is arranged on the bottom plate 100, and a controller is installed in the control box 107, and the controller is electrically connected with the electric push rod 203 and the motor 304 of the back rubbing assembly. The control box 107 is fixed on the rear end of the base plate 100 without affecting the folding function, and a battery and a controller are housed inside, and the controller is used to control the working state of the electric push rod 203 and the motor 304 . In this embodiment, the controller can be either a single-chip microcomputer or a PLC.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the purpose and scope of the technical solutions of the present invention, all of them should be included in the scope of the claims of the present invention. The technologies, shapes and construction parts not described in detail in the present invention are all known technologies.

Claims (7)

1. A utility chair, comprising: a base plate (100), a leg posture adjusting mechanism (200), a back wiping mechanism (300) and a moving support mechanism (400);

the middle part of the bottom plate (100) is provided with a first through hole (101);

the leg posture adjusting mechanism (200) comprises a turnover plate (201) and handrail units positioned on two sides of the turnover plate (201), and one side of the turnover plate (201) is rotatably connected with the bottom plate (100); the handrail unit comprises a handrail rod (202) and an electric push rod (203) hinged with one end of the handrail rod (202), the bottom of the electric push rod (203) is rotatably installed on the bottom plate (100), and the other end of the handrail rod (202) is fixedly connected with the turnover plate (201);

a second through hole (204) corresponding to the first through hole (101) is formed in the middle of the turnover plate (201), and a cushion (500) is movably placed on the turnover plate (201);

the back wiping mechanism (300) comprises a support frame in a shape of a Chinese character 'men' and a back wiping component which is arranged on the support frame and can reciprocate up and down, and the bottom of the support frame is rotatably arranged on the bottom plate (100);

the mobile support mechanism (400) comprises two oppositely disposed forefoot supports (410) and two oppositely disposed rearfoot supports (420); the forefoot support (410) comprises a first support rod (411) arranged vertically, an automatic brake module (412) installed at the bottom of the first support rod (411), and a directional wheel (413) installed at the bottom of the automatic brake module (412); the rear foot supporting piece (420) comprises a second supporting rod (421) which is vertically arranged and a universal wheel (422) which is arranged at the bottom of the second supporting rod (421); the top end of the first supporting rod (411) and the top end of the second supporting rod (421) are both connected with the bottom plate (100);

the support frame comprises two support pipes which are arranged oppositely and a fixing plate (301) which is connected to the top ends of the two support pipes;

the bottom of the supporting tube is rotationally connected with the bottom plate (100);

the back wiping component comprises a synchronous belt (302) which is longitudinally arranged, a back wiping plate (303) which is arranged on the synchronous belt (302) and a motor (304) which drives the synchronous belt (302) to reciprocate up and down;

the synchronous belt (302) is rotatably arranged in the mounting groove (306) through a bearing (305);

the motor (304) is fixedly arranged on the fixing plate (301) through a U-shaped hoop (307);

the top end of the mounting groove (306) is fixedly mounted in the middle of the bottom of the fixing plate (301), and the bottom of the mounting groove is rotatably connected with the bottom plate (100);

the supporting tube is of a telescopic structure and comprises a seat tube (308) and a circular tube (309) inserted into the seat tube (308), the circular tube (309) and the seat tube (308) are fixed through a seat tube clamp (310), the top end of the circular tube (309) is connected with the fixing plate (301) through a flange seat (311), the circular tube (309) is installed in the flange seat (311), and the seat tube (308) is rotatably connected with the bottom plate (100);

the bottom of the mounting groove (306) is slidably mounted in a sliding groove (312), the sliding groove (312) is U-shaped and axially and longitudinally extends, an adjusting hole (313) which is long and longitudinally extends is formed in the side wall of the sliding groove (312), the mounting groove (306) and the sliding groove (312) are fixed through a tightness adjuster (314) which is arranged in the adjusting hole (313) in a penetrating manner, and the tightness adjuster (314) is screwed on the groove wall of the mounting groove (306); the bottom of the sliding chute (312) is connected with the bottom plate (100) through a U-shaped piece (315), and the bottom of the sliding chute (312) is rotatably connected with the U-shaped piece (315).

2. A multi-function chair as claimed in claim 1, wherein: the automatic brake module (412) comprises a square groove (4121), a first mounting plate (4122) and a second mounting plate (4123), wherein the first mounting plate and the second mounting plate are arranged oppositely up and down;

the top end of the square groove (4121) is hermetically arranged, and the outer wall of the top end of the square groove (4121) is contacted with the bottom of the first mounting plate (4122); the second mounting plate (4123) is positioned in the bottom opening of the square groove (4121);

the first mounting plate (4122) is connected with the second mounting plate (4123) through a guide rod (4124), the bottom end of the guide rod (4124) is fixedly connected to the second mounting plate (4123), the top end of the guide rod (4124) penetrates through the top end of the square groove (4121) and then slides out of the first mounting plate (4122), and a limiting nut (4125) is screwed at the top end of the guide rod (4124) above the first mounting plate (4122);

a supporting spring (4126) is arranged between the second mounting plate (4123) and the inner wall of the top end of the square groove (4121);

the directional wheel (413) is installed at the bottom of the second installation plate (4123), and the first support rod (411) is connected to the first installation plate (4122).

3. The utility chair of claim 1, wherein: the first supporting rod (411) and the second supporting rod (421) are detachably connected with the bottom plate (100);

the bottom plate (100) bottom be provided with first bracing piece (411) and second bracing piece (421) one-to-one's adapter sleeve (102), first bracing piece (411) and second bracing piece (421) all insert and establish and correspond in adapter sleeve (102) to through locking piece (103) with adapter sleeve (102) locking.

4. A multi-function chair as claimed in claim 3, wherein: the locking member (103) comprises a tie bar (1031) and an insert connected to both ends of the tie bar (1031), the insert comprises a fork pin (1032) and a hook pin (1033) which are coaxially connected, the top of the first support bar (411) is locked with the connection sleeve (102) by the hook pin (1033), and the top of the second support bar (421) is locked with the connection sleeve (102) by the fork pin (1032);

the fork-shaped pin (1032) is movably arranged in the spring sleeve (104) in a penetrating mode, a movable groove (105) used for the fork-shaped pin (1032) to slide in a reciprocating mode is formed in the spring sleeve (104), one end, close to the hook-shaped pin (1033), of the movable groove (105) is arranged in a sealing mode, a return spring (1034) is sleeved on the fork-shaped pin (1032), and the return spring (1034) is located in the movable groove (105);

the spring sleeve (104) is connected with the connecting sleeve (102) provided with the second supporting rod (421).

5. A multi-function chair as claimed in claim 1, wherein: the seat tube (308) is rotationally connected with the bottom plate (100) through a rotating piece;

the rotating piece comprises a heightening block (316) and a folding hinge (317) arranged on the heightening block (316), and the bottom of the seat tube (308) is connected to the folding hinge (317).

6. A multi-function chair as claimed in claim 1, wherein: the bottom of one side of the bottom plate (100) is provided with a hook (106) used for hanging the cushion (500).

7. A multi-function chair as claimed in claim 1, wherein: the back-rubbing machine is characterized in that a control box (107) is arranged on the bottom plate (100), a controller is installed in the control box (107), and the controller is electrically connected with the electric push rod (203) and the back-rubbing component.

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