CN114098347A - Side-hanging type power-assisted bed-rising device for old people - Google Patents

Abstract

The side-hung type power-assisted bed rising and lying device for the old comprises a combined three-fold power-assisted bed rising and lying plate, a 270-degree vertical turnover mechanism, a 90-degree horizontal slewing mechanism, a two-way lifting mechanism for the bed rising and lying backup plate and the like, adopts a single body design of bed side hanging and connection, and can be suitable for matching different types of bed tools; the combined three-folding rising and lying plate is matched with a rising and lying backup plate bidirectional lifting mechanism, so that the function conversion of a flat bed bedding and a seat can be realized, a 270-degree vertical turnover mechanism can realize the side hanging of the bed edge or the flat laying of the bed surface of the combined three-folding rising and lying plate, and a 90-degree horizontal rotation mechanism drives the combined three-folding rising and lying plate to horizontally rotate on the bed surface, so that the old people can conveniently rise and lie through the function conversion of the seat; 1 motor is adopted to drive the operation of 3 mechanisms with different operation directions; the multifunctional bed has the characteristics of compact structure, comfortable use, simple and convenient operation, low power consumption, high cost performance and the like, can be matched with different beds, meets the assistance requirement of the old for getting up and lying in bed, and has important practical significance and good application prospect.

Description

Side-hanging type power-assisted bed-rising device for old people

Technical Field

The invention relates to a household old people assisting power device, in particular to a side-hanging old people assisting lifting bed device suitable for old people to live at home.

Background

With the accelerated aging process in China, the proportion of the population of the elderly is continuously increased, especially the elderly who can self-care but are weak and difficult to move in life, which directly affects the family life and social stability of urban and rural residents, receives wide attention and high attention from society, solves the basic living problems of weakness, difficulty in self-care and the like of the elderly, improves the life quality and self safety of the elderly, and becomes one of the problems to be solved urgently in the whole society and every family.

In daily life, the difficulty of getting up or lying in bed of the old is one of the most common problems, and the old often needs the help of others to complete the action of getting up or lying down. When the existing nursing bed, automatic bed or self-energy bed finishes the action of getting up and lying, the old needs to stand up with the back of the body first, then the human body moves on the bed until the bedside can get off the bed, when the old lies in the bed, the old climbs the bed from the bedside first, sits and then lies on the back of the body on the bed.

Home equipment suitable for old people and assisting power is continuously researched and developed at home and abroad, products related to the function of assisting the old people to move are increasingly deeply inserted into the market, products which are helpful for old people to get up and lie down are more favored by the market, and the existing old people getting up and lying down assisting devices on the market can be roughly divided into two categories. One type is an electric power-assisted getting-up bed for the old, which is the most common power-assisted device for the old to get up, popularized and displayed in the market at present, and the electric device adjusts the angles of a seat surface, a backrest and a leg rest through a remote control button, so that the purposes of assisting the old to sit down, lie down and stand up are achieved; most of electric power-assisted getting-up beds are complex in structure and large in size, the purchase and use cost is high, the use space is greatly limited, and the electric power-assisted getting-up beds are difficult to popularize and apply in ordinary families. The other type is the old person's helping hand device of getting up of ordinary class, is the height and the gradient lift that realize the cushion through spring force or mechanical force to realize assisting the old person and play the purpose of bed, this kind of helping hand device of getting up has simple structure's characteristics for the helping hand device of getting up of electronic class, but this kind of device comfort level and practicality are relatively poor, and the security performance also can not obtain fine guarantee, and popularization and application receives the restriction.

With the increasingly prominent aging problem in China, the development of the assistant products for the aged people is more and more emphasized. The prior power-assisted bed rising and lying device for the old people in the market is researched in a classified manner, the design requirement of the power-assisted bed rising and lying device for the old people is researched by combining the research of an ergonomic theory, the function of the independent bed rising and lying behavior of the old people is facilitated, and the power-assisted bed rising and lying device is economical, practical and easy to popularize in ordinary families. The side-hung type power-assisted bed rising and falling device for the old adopts a single body design of bed side hanging, can be suitable for matching with different types of household bedding, and is beneficial to the old who are weak and can take care of themselves to rise and fall. The combined three-folding bed-rising and lying plate is designed and is matched with a two-way lifting mechanism of the bed-rising and lying backup plate, so that the function conversion of the flat bed bedding and the seat can be realized; the designed 90-degree horizontal rotation mechanism drives the combined three-folding lying plate to horizontally rotate on the bed surface, and the old people can conveniently sit up through the conversion of the functions of the seat. The 1 motor is adopted to drive the 3 mechanisms with different running directions to run simultaneously, and the device has the characteristics of simple structure, simple and convenient operation, energy conservation, safety, high cost performance and the like. The technology is not applied to the power-assisted getting-up and lying bed device at home and abroad, meets the requirements of getting-up and lying in bed of the old, and has important practical significance and good application prospect for promoting the popularization, application and development of the power-assisted getting-up device in China.

Disclosure of Invention

The invention aims to design a side-hanging type power-assisted bed lifting device for the old, which adopts a single body design of bed side hanging, can be suitable for matching with different types of household bedding, and is beneficial to the old who are weak and can take care of themselves to lift the bed. The combined three-folding bed-rising and lying plate is designed and is matched with a two-way lifting mechanism of the bed-rising and lying backup plate, so that the function conversion of the flat bed bedding and the seat can be realized; the designed 270-degree vertical turnover mechanism can realize the bedside side hanging or bed surface tiling of the combined three-folding lying plate, and is convenient for the old to move in or out of the combined three-folding lying plate by self; the designed 90-degree horizontal rotation mechanism drives the combined three-folding lying plate to horizontally rotate on the bed surface, and the old people can conveniently sit up through the conversion of the functions of the seat. 1 motor is adopted to simultaneously drive the operation of a 270-degree vertical turnover mechanism, a 90-degree horizontal rotation mechanism and a two-way lifting mechanism of a lifting backup plate, so that all functions of assisting the old to get up and lie in bed are realized. The side-hanging type old people power-assisted bed rising and falling device has the characteristics of compact structure, small occupied space, convenience and comfort in use, simplicity and safety in operation, low power consumption, high cost performance and the like, can be matched with household beds of different types, meets the requirements of old people for rising and falling in bed, and has important practical significance and good application prospect for promoting the popularization, application and development of the old people power-assisted bed rising and falling device in China.

The purpose of the invention is realized as follows: the side-hung type elderly assisted getting-up and lying device comprises a combined three-fold assisted getting-up and lying plate (1), an electric motor (2), a transmission mechanism fixing supporting plate (3), a supporting plate bracket (4), a 270-degree vertical turnover mechanism (5), a worm driving mechanism (6), a 90-degree horizontal rotation mechanism (7), a getting-up and lying backing plate bidirectional lifting mechanism (8), a getting-up and lying backing plate bidirectional lifting transmission hinge (9), a transmission/hinge shaft (10) and the like; the transmission mechanism fixing supporting plate (3) is hinged on a transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, and the transmission/hinge shaft (10) is sequentially provided with a 270-degree vertical turnover mechanism (5) and a 90-degree horizontal rotation mechanism (7); the combined three-fold power-assisted lying plate (1) is fixed on a 90-degree horizontal rotating mechanism (7) at the top of a transmission mechanism fixing supporting plate (3), a two-way lifting mechanism (8) of the lying and rising backup plate is arranged on the side of the combined three-fold power-assisted lying plate (1), the lower part of the two-way lifting mechanism (8) of the lying and rising backup plate is connected with the 90-degree horizontal rotating mechanism (7), and the upper part of the two-way lifting mechanism (8) of the lying and rising backup plate is connected with the combined three-fold power-assisted lying plate (1) through a two-way lifting transmission hinge (9) of the lying and rising backup plate; the motor (2) drives a 270-degree vertical turnover mechanism (5) and a 90-degree horizontal rotation mechanism (7) through a worm driving mechanism (6), and the 90-degree horizontal rotation mechanism (7) drives a two-way lifting mechanism (8) for lifting and lying the back plate.

The combined three-fold power-assisted rising and lying plate of the side-hung type old person power-assisted rising and lying device comprises a backrest plate lifting mechanism (11), a rising and lying backrest plate lifting linkage mechanism (12), a rising and lying backrest plate lifting transmission hinge hole (13), a power-assisted handrail (14), a leg backrest plate lifting mechanism (15), a leg backrest plate (16), a leg backrest plate hinge (17), a seat plate (18), a rising and lying plate connecting disc (19), a rising and lying backrest plate bidirectional lifting transmission mechanism fixing hole (20), a backrest plate hinge (21), a backrest plate (22) and the like; the backrest plate (22) is connected to one end of the seat plate (18) in a chain mode through a backrest plate hinge (21), the leg backrest plate (16) is connected to the other end of the seat plate (18) in a chain mode through a leg backrest plate hinge (17), a rising and lying plate connecting disc (19) is arranged below the seat plate (18), and the power-assisted handrail (14) and the rising and lying backrest plate bidirectional lifting transmission mechanism fixing holes (20) are formed in the side of the seat plate (18) respectively; the backrest plate lifting mechanism (11) is arranged on a backrest plate (22), the rising and lying backrest plate lifting linkage mechanism (12) is arranged on the seat plate (18), the leg backrest plate lifting mechanism (15) is arranged on the leg backrest plate (16), two ends of the rising and lying backrest plate lifting linkage mechanism (12) are respectively hinged with the backrest plate lifting mechanism (11) and the leg backrest plate lifting mechanism (15), and the rising and lying backrest plate lifting transmission hinge hole (13) is formed in the rising and lying backrest plate lifting linkage mechanism (12).

The side-hanging old-aged power-assisted lifting and lying bed device is arranged on one side of a bed, two sides of a transmission/hinge shaft are hung on the edge of the bed through side suspension brackets, a transmission mechanism fixing support plate is hinged on the transmission/hinge shaft through support plate brackets on two sides, a combined three-folding power-assisted lifting and lying plate is connected on a 90-degree horizontal rotation mechanism, the 90-degree horizontal rotation mechanism is arranged on the transmission mechanism fixing support plate, the transmission mechanism fixing support plate and the combined three-folding power-assisted lifting and lying plate are perpendicular to the side of the bed, room space is not occupied, and the use of old people is not influenced.

When the old people need assistance when getting up, firstly turn over the body to the inner side of the bed, through the operation of a power switch, the motor drives the worm driving mechanism, the worm driving mechanism drives the transmission/hinge shaft to rotate clockwise through the 270-degree vertical turnover mechanism, the transmission/hinge shaft drives the transmission mechanism to fix the support plate to turn over through the support plate bracket, the 90-degree horizontal rotation mechanism on the transmission mechanism fixing support plate drives the combined three-folding assistance lying plate to turn over vertically at 270 degrees, the combined three-folding assistance lying plate is laid on the bed surface, the old people reversely turn over the body to the combined three-folding assistance lying plate to lie stably, and hands hold the assistance handrails to ensure the safety of lying up.

After the old people lie stably on the combined three-folding power-assisted lying plate, the old people hold the power-assisted handrail tightly to ensure the safety in operation, through the operation of a power switch, the motor drives the worm driving mechanism, the worm driving mechanism drives the transmission/hinge shaft to rotate clockwise through the 270-degree vertical turnover mechanism, the transmission/hinge shaft drives the 90-degree horizontal rotation mechanism to horizontally rotate, the 90-degree horizontal rotation mechanism drives the combined three-folding power-assisted lying plate to horizontally rotate by 90 degrees, and the combined three-folding power-assisted lying plate rotates by 90 degrees on the bed surface. The motor continues to drive the worm driving mechanism, the worm driving mechanism drives the transmission/hinge shaft to rotate clockwise through the 270-degree vertical turnover mechanism, the transmission/hinge shaft drives the 90-degree horizontal rotation mechanism to horizontally rotate, the horizontal rotation mechanism drives the rising and lying backup plate bidirectional lifting mechanism to rotate, the rising and lying backup plate bidirectional lifting mechanism drives the rising and lying backup plate lifting linkage mechanism to horizontally move through the rising and lying backup plate bidirectional lifting transmission hinge, two ends of the rising and lying backup plate lifting linkage mechanism synchronously drive the backup plate lifting mechanism and the leg backup plate lifting mechanism, the backup plate lifting mechanism drives the backup plate to upwards and vertically turn over by taking the backup plate hinge as an axis, the leg backup plate lifting mechanism drives the leg backup plate to downwards and vertically turn by taking the leg backup plate hinge as an axis, the combined three-folding power-assisted rising and lying plate is a chair, the power-assisted handrail is arranged on one side of the seat plate, and old people can easily rise by means of the power-assisted handrail.

When the old person lies in bed and needs the helping hand, the combination formula seventy percent discount helping hand is taken out of sleeping and is the seat, and the old person can easily sit up with the help of the helping hand handrail, through switch operation, combination formula seventy percent discount helping hand board for getting out of sleeping and lying the utensil for the flat board, then turn round to the bed surface parallel with the bed on, the old person turns on the health to the bed on, waits for combination formula seventy percent discount helping hand board to shift out the bed surface and park perpendicularly behind the side of bed, the old person turns over the health to the position of lying flat again.

The side-hanging type old people power-assisted bed rising and lying device has the advantages that: the design of the single body hung on the bed side can be suitable for matching with different types of household bedding, and is beneficial to the old who are weak and can take care of themselves to get up and lie down for use. The combined three-folding bed-rising and lying plate is designed and is matched with a two-way lifting mechanism of the bed-rising and lying backup plate, so that the function conversion of the flat bed bedding and the seat can be realized; the designed 270-degree vertical turnover mechanism can realize the bedside side hanging or bed surface tiling of the combined three-folding lying plate, and is convenient for the old to move in or out of the combined three-folding lying plate by self; the designed 90-degree horizontal rotation mechanism drives the combined three-folding lying plate to horizontally rotate on the bed surface, and the old people can conveniently sit up through the conversion of the functions of the seat. 1 motor is adopted to simultaneously drive the operation of a 270-degree vertical turnover mechanism, a 90-degree horizontal rotation mechanism and a two-way lifting mechanism of a lifting backup plate, so that all functions of assisting the old to get up and lie in bed are realized. The side-hung type power-assisted getting-up and lying device for the old has the characteristics of compact structure, small occupied space, convenience and comfort in use, simplicity and safety in operation, low power consumption and the like, can be matched with home beds of different types, meets the requirements of getting-up and lying-up of the old, and has important practical significance and good application prospect for promoting the popularization, application and development of the power-assisted getting-up device for the old in China.

Drawings

The specific structure of the present invention is given by the following embodiments and the accompanying drawings.

Fig. 1 is a schematic structural diagram of a side-hung type old-age power-assisted bed rising and lying device of the invention.

Fig. 2 is a schematic structural view of the combined three-fold power-assisted sleeping plate of the invention.

Fig. 3 is a schematic diagram of the bedside side-hanging type old-age power-assisted bed standing and sleeping device of the invention.

FIG. 4 is a drawing of the present inventionCombined three-folding power-assisted lying plate vertical 270^○Schematic illustration of the inversion.

FIG. 5 is a horizontal plane 90 of the combined triple-folding power-assisted sit-up and lie-down board of the present invention^○Schematic diagram of the revolution.

Fig. 6 is a schematic view showing the rising of the sectional triple folding assisted rising and falling board of the present invention.

The present invention will be described in detail with reference to fig. 1, 2, 3, 4, 5 and 6.

In the figure: 1. the combined three-fold power-assisted rising and lying plate comprises a combined three-fold power-assisted rising and lying plate, 2, a motor, 3, a transmission mechanism fixing support plate, 4, a support plate bracket, 5 and 270-degree vertical turnover mechanisms, 6, a worm driving mechanism, 7 and 90-degree horizontal rotation mechanisms, 8, a rising and lying backup plate bidirectional lifting mechanism, 9, a rising and lying backup plate bidirectional lifting transmission hinge, 10, a transmission/hinge shaft, 11, a backup plate lifting mechanism, 12, a rising and lying backup plate lifting linkage mechanism, 13, a rising and lying backup plate lifting transmission hinge hole, 14, a power-assisted handrail, 15, a leg backup plate lifting mechanism, 16, a leg backup plate, 17, a leg backup plate hinge, 18, a seat plate, 19, a rising plate connecting disc, 20, a rising and lying backup plate bidirectional lifting transmission mechanism fixing hole, 21, a backup plate hinge, 22, a backup plate, 23 and a side suspension bracket.

Detailed Description

As shown in fig. 1: the transmission mechanism fixing supporting plate (3) is hinged on a transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, and the transmission/hinge shaft (10) is sequentially provided with a 270-degree vertical turnover mechanism (5) and a 90-degree horizontal rotation mechanism (7); the combined three-fold power-assisted lying plate (1) is fixed on a 90-degree horizontal rotating mechanism (7) at the top of a transmission mechanism fixing supporting plate (3), a two-way lifting mechanism (8) of the lying and rising backup plate is arranged on the side of the combined three-fold power-assisted lying plate (1), the lower part of the two-way lifting mechanism (8) of the lying and rising backup plate is connected with the 90-degree horizontal rotating mechanism (7), and the upper part of the two-way lifting mechanism (8) of the lying and rising backup plate is connected with the combined three-fold power-assisted lying plate (1) through a two-way lifting transmission hinge (9) of the lying and rising backup plate; the motor (2) drives a 270-degree vertical turnover mechanism (5) and a 90-degree horizontal rotation mechanism (7) through a worm driving mechanism (6), and the 90-degree horizontal rotation mechanism (7) drives a two-way lifting mechanism (8) for lifting and lying the back plate.

As shown in fig. 2: the backrest plate (22) is connected to one end of the seat plate (18) in a chain mode through a backrest plate hinge (21), the leg backrest plate (16) is connected to the other end of the seat plate (18) in a chain mode through a leg backrest plate hinge (17), a rising and lying plate connecting disc (19) is arranged below the seat plate (18), and the power-assisted handrail (14) and the rising and lying backrest plate bidirectional lifting transmission mechanism fixing holes (20) are formed in the side of the seat plate (18) respectively; the backrest plate lifting mechanism (11) is arranged on a backrest plate (22), the rising and lying backrest plate lifting linkage mechanism (12) is arranged on the seat plate (18), the leg backrest plate lifting mechanism (15) is arranged on the leg backrest plate (16), two ends of the rising and lying backrest plate lifting linkage mechanism (12) are respectively hinged with the backrest plate lifting mechanism (11) and the leg backrest plate lifting mechanism (15), and the rising and lying backrest plate lifting transmission hinge hole (13) is formed in the rising and lying backrest plate lifting linkage mechanism (12).

As shown in fig. 3: two sides of a transmission/hinge shaft (10) are hung at the bedside through a side hanging frame (23), a transmission mechanism fixing supporting plate (3) is hinged on the transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, a combined three-fold power-assisted lying plate (1) is connected on a 90-degree horizontal rotating mechanism (7), the 90-degree horizontal rotating mechanism (7) is arranged on the transmission mechanism fixing supporting plate (3), and the transmission mechanism fixing supporting plate (3) and the combined three-fold power-assisted lying plate (1) are perpendicular to the side of the bed.

As shown in fig. 4: two sides of a transmission/hinge shaft (10) are hung at the bedside through a side hanging frame (23), a transmission mechanism fixing supporting plate (3) is hinged on the transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, a combined three-fold power-assisted lying plate (1) is connected on a 90-degree horizontal slewing mechanism (7), and the 90-degree horizontal slewing mechanism (7) is arranged on the transmission mechanism fixing supporting plate (3); the worm driving mechanism (6) drives the transmission/hinge shaft (10) to rotate clockwise through the 270-degree vertical turnover mechanism (5), the transmission/hinge shaft (10) drives the transmission mechanism fixing supporting plate (3) to turn through the supporting plate bracket (4), the 90-degree horizontal rotation mechanism (7) on the transmission mechanism fixing supporting plate (3) drives the combined three-folding power-assisted lying plate (1) to turn vertically at 270 degrees, and the combined three-folding power-assisted lying plate (1) is laid on the bed surface flatly.

As shown in fig. 5: two sides of a transmission/hinge shaft (10) are hung at the bedside through a side hanging frame (23), a transmission mechanism fixing supporting plate (3) is hinged on the transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, a combined three-fold power-assisted lying plate (1) is connected on a 90-degree horizontal slewing mechanism (7), and the 90-degree horizontal slewing mechanism (7) is arranged on the transmission mechanism fixing supporting plate (3); the worm driving mechanism (6) drives the transmission/hinge shaft (10) to rotate clockwise through the 270-degree vertical turnover mechanism (5), the transmission/hinge shaft (10) drives the 90-degree horizontal rotation mechanism (7) to horizontally rotate, the 90-degree horizontal rotation mechanism (7) drives the combined three-folding power-assisted lying plate (1) to horizontally rotate at 90 degrees, and the combined three-folding power-assisted lying plate (1) is vertical to the bed surface.

As shown in fig. 6: two sides of a transmission/hinge shaft (10) are hung at the bedside through a side hanging frame (23), a transmission mechanism fixing supporting plate (3) is hinged on the transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, a combined three-fold power-assisted lying plate (1) is connected on a 90-degree horizontal slewing mechanism (7), and the 90-degree horizontal slewing mechanism (7) is arranged on the transmission mechanism fixing supporting plate (3); the backrest plate (22) is linked to one end of the seat plate (18) through a backrest plate hinge (21), and the leg rest plate (16) is linked to the other end of the seat plate (18) through a leg rest plate hinge (17); the worm driving mechanism (6) drives the transmission/hinge shaft (10) to rotate clockwise through the 270-degree vertical turnover mechanism (5), the transmission/hinge shaft (10) drives the 90-degree horizontal rotation mechanism (7) to rotate horizontally, the horizontal rotation mechanism (7) drives the rising and lying backup plate two-way lifting mechanism (8) to rotate, the rising and lying backup plate two-way lifting mechanism (8) drives the rising and lying backup plate lifting linkage mechanism (12) to move horizontally through the rising and lying backup plate two-way lifting transmission hinge (9), two ends of the rising and lying backup plate lifting linkage mechanism (12) synchronously drive the backup plate lifting mechanism (11) and the leg backup plate lifting mechanism (15), the backup plate lifting mechanism (11) drives the backup plate (22) to turn upwards and vertically by taking the backup plate hinge (21) as an axis, the leg backup plate lifting mechanism (15) drives the leg backup plate (16) to turn downwards and vertically by taking the leg backup plate hinge (17) as an axis, the combined three-fold power-assisted lying plate (1) is a chair, and the power-assisted armrests (14) are arranged on one side of the seat plate (18).

Claims (2)

1. Side-hung old person's helping hand plays bed device is by combination formula three folding helping hand plays bed board (1), motor (2), fixed layer board (3) of drive mechanism, layer board support (4), 270 perpendicular tilting mechanism (5), worm actuating mechanism (6), 90 horizontal rotation mechanism (7), plays two-way elevating system of back plate (8), plays two-way lift transmission hinge (9) of back plate of sleeping, transmission hinge pin (10) are constituteed, its characterized in that: the transmission mechanism fixing supporting plate (3) is hinged on a transmission/hinge shaft (10) through supporting plate brackets (4) at two sides, and the transmission/hinge shaft (10) is sequentially provided with a 270-degree vertical turnover mechanism (5) and a 90-degree horizontal rotation mechanism (7); the combined three-fold power-assisted lying plate (1) is fixed on a 90-degree horizontal rotating mechanism (7) at the top of a transmission mechanism fixing supporting plate (3), a two-way lifting mechanism (8) of the lying and rising backup plate is arranged on the side of the combined three-fold power-assisted lying plate (1), the lower part of the two-way lifting mechanism (8) of the lying and rising backup plate is connected with the 90-degree horizontal rotating mechanism (7), and the upper part of the two-way lifting mechanism (8) of the lying and rising backup plate is connected with the combined three-fold power-assisted lying plate (1) through a two-way lifting transmission hinge (9) of the lying and rising backup plate; the motor (2) drives a 270-degree vertical turnover mechanism (5) and a 90-degree horizontal rotation mechanism (7) through a worm driving mechanism (6), and the 90-degree horizontal rotation mechanism (7) drives a two-way lifting mechanism (8) for lifting and lying the back plate.

2. The side-hung type elderly power-assisted bed lifting device of claim 1, wherein the combined three-folding power-assisted bed lifting plate comprises a backrest plate lifting mechanism (11), a lifting and lying backrest plate lifting linkage mechanism (12), a lifting and lying backrest plate lifting transmission hinge hole (13), a power-assisted handrail (14), a leg backrest plate lifting mechanism (15), a leg backrest plate (16), a leg backrest plate hinge (17), a seat plate (18), a lifting and lying plate coupling disc (19), a lifting and lying backrest plate bidirectional lifting transmission mechanism fixing hole (20), a backrest plate hinge (21) and a backrest plate (22), and is characterized in that: the backrest plate (22) is connected to one end of the seat plate (18) in a chain mode through a backrest plate hinge (21), the leg backrest plate (16) is connected to the other end of the seat plate (18) in a chain mode through a leg backrest plate hinge (17), a rising and lying plate connecting disc (19) is arranged below the seat plate (18), and the power-assisted handrail (14) and the rising and lying backrest plate bidirectional lifting transmission mechanism fixing holes (20) are formed in the side of the seat plate (18) respectively; the backrest plate lifting mechanism (11) is arranged on a backrest plate (22), the rising and lying backrest plate lifting linkage mechanism (12) is arranged on the seat plate (18), the leg backrest plate lifting mechanism (15) is arranged on the leg backrest plate (16), two ends of the rising and lying backrest plate lifting linkage mechanism (12) are respectively hinged with the backrest plate lifting mechanism (11) and the leg backrest plate lifting mechanism (15), and the rising and lying backrest plate lifting transmission hinge hole (13) is formed in the rising and lying backrest plate lifting linkage mechanism (12).

Images