CN112245148A

CN112245148A - Help old beddo based on novel mechanical structure

Info

Publication number: CN112245148A
Application number: CN202011129827.4A
Authority: CN
Inventors: 于玮; 赵南生; 王润宇; 李天乐; 程东阳; 张锦龙; 顾思佳
Original assignee: Nantong University
Current assignee: Nantong University
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-01-22

Abstract

The invention provides an old-helping electric bed based on a novel mechanical structure, which comprises a bed bottom bracket part, wherein a lifting support part, a bed body supported by the lifting support part and a folding guardrail arranged on the side surface of the bed body are arranged above the bed bottom bracket part. The invention has the beneficial effects that: the invention comprises a bed bottom bracket part, a lifting support part, a bed body and a folding guardrail, wherein the bed body comprises a bed body frame, two connecting rod assemblies, a back-lifting leg-bending part, a leg support mechanism, a hip support base plate, a head pillow plate and a back-turning mechanism, and the bed body is independent and does not interfere with each other, thereby being simple and convenient to operate.

Description

Help old beddo based on novel mechanical structure

Technical Field

The invention relates to the technical field of an old-age assisting functional bed, in particular to an old-age assisting electric bed based on a novel mechanical structure.

Background

In recent years, the population of China is seriously aged, the number of 'empty nest' families exceeds 50%, and the number of the 'empty nest' families reaches 70% in some large and medium-sized cities. At present, the number of the old people continuously rises, wherein the number of the old people living alone breaks through 4000 ten thousand, and the 'empty nesting' is continuous.

The life of the old people is improved in the society, the old people are well waited for, and the old people can enjoy the sound of the later years and continuously increase. The government has also performed a series of actions in this regard to help the elderly to live more lucrative lives, calling the general population to help the elderly more.

Through social investigation by a team, a plurality of old people with certain ages show that whether the old people have certain self-care capacity or not: when the patient gets on or off the bed, a certain trouble is caused. For example, the legs and feet are inconvenient to do, the user cannot exert strength, the user is difficult to turn over, the user can hardly bend the legs and the waist, and the like. Therefore, the demand for the device which can effectively help the old to easily solve the problems of getting on and off the bed is on the rise in society.

Through investigation and research, most of the functions realized in the old-age bed in the domestic market are single, manual operation and control are needed, and most of the old-age beds are nursing beds in hospitals. This is far from satisfying the needs of the old.

Along with the increasing study of the last minute of nursing bed in recent years, the problem that nursing bed help people to solve also increases gradually, and nursing bed's function is changing day by day. From the basic function, the nursing bed can complete the basic movements of the bed body such as back lifting, lifting and the like; with the increasing demand, a plurality of additional functions such as auxiliary defecation, sewage treatment, cleaning and periodic disinfection, in-situ rotation of the nursing bed, folding and moving of the nursing bed and the like are added. However, the manufacturing cost of the products in the market is high, the sales amount is very expensive, the average price reaches 20000 yuan per machine, and many families cannot afford the huge geriatric beds.

How to solve the above technical problems is the subject of the present invention.

Disclosure of Invention

The invention aims to provide an old-person-assisting electric bed based on a novel mechanical structure, which can help the elderly living alone with certain self-care capability to realize the lifting function of a bed body more conveniently, and help the elderly to get on back and bend legs and turn back left and right, mainly solves the problems of getting on and off the bed of the elderly living alone with certain self-care capability but limited mobility, can also help nursing staff to nurse the elderly more conveniently and efficiently, and improves the convenience, safety and comfort of getting on and off the bed of the elderly.

The invention is realized by the following measures: the utility model provides a based on novel mechanical structure helps old electric bed, includes bed end support part, wherein bed end support part's top is equipped with the lift support part, by the lathe bed that the lift support part supported, and set up and be in the folding guardrail of lathe bed side.

As a further optimization scheme of the old-helping electric bed based on the novel mechanical structure, the bed body consists of a bed body frame, two connecting rod assemblies, a back-rising leg-bending part, a leg supporting mechanism, a hip supporting base plate, a head pillow plate and a back-turning mechanism;

the buttock support base plate is fixedly arranged in the middle of the bed frame, and the head pillow plate is connected to the tail end of the bed frame.

As a further optimization scheme of the aging-assisting electric bed based on the novel mechanical structure, the bed body frame is composed of two groups of supports at the bottom of the bed, two cross rods respectively hinged to the tops of the two groups of supports and a transverse support rod positioned between the two cross rods.

As a further optimization scheme of the aging-assisting electric bed based on the novel mechanical structure, the two connecting rod assemblies are respectively positioned on two sides of the bed frame, each connecting rod assembly is rotatably connected with the rotating parts on two sides of the leg supporting mechanism through one end, the other end of each connecting rod assembly is hinged with the linkage rods of the L-shaped rotating parts on two sides of the back turning mechanism, and the two rotating parts and the two L-shaped rotating parts are respectively hinged on two sides of the bed frame.

As a further optimized scheme of the novel mechanical structure-based electric bed for helping the old, the back-rising and leg-bending part is a power push rod part connected between the transverse rod close to the front end of the bed body and the transverse supporting rod and used for pushing the transverse supporting rod at the lower part of the bed body frame; the power push rod component consists of a back lifting leg bending motor and a power push rod.

The back-lifting leg-bending motor at the lower end of the bed body is fixed on the bed body frame, and the back-lifting leg-bending motor enables the four-bar mechanism to swing by pushing the cross bar below the bed body, so that the back-lifting leg-bending component can be turned over.

The back-lifting leg-bending motor of the back-lifting leg-bending part is started, the power push rod enables the four-bar linkage mechanisms on the two sides of the bed body to swing by pushing the cross rod on the lower portion of the bed body, and the leg-bending part also turns downwards while the back structure turns upwards anticlockwise, so that the back-lifting leg-bending linkage function is realized; the back rising angle can reach a degree which is enough to help the old to rise, and the back falling and leg lifting functions are realized through the return stroke of the motor.

As a further optimization scheme of the aging-assisting electric bed based on the novel mechanical structure, the leg supporting mechanism comprises two rotating pieces and a leg supporting base plate, wherein the two rotating pieces are sequentially hinged to the bed frame and the linkage rod, the leg supporting base plate is connected between the two rotating pieces, and the cross section of the leg supporting base plate is in an L shape.

As a further optimized scheme of the old-people-assisting electric bed based on a novel mechanical structure provided by the invention, the back turning mechanism comprises a cross beam arranged between two L-shaped rotating pieces, an inclined supporting rod connected to the cross beam, turning pieces hinged on the inclined supporting rod, two back turning plates hinged with each other and arranged on the inclined supporting rod, two V-shaped back turning parts connected to the bottom surface of one back turning plate in a parallel rotating manner, a lapping rod penetrating through a guide hole on the turning piece and fixing the two V-shaped back turning parts, and a power mechanism with one end hinged to one side of the bed frame and the other end movably connected to the turning piece and used for driving the turning piece to turn, wherein the power mechanism is a back turning electric push rod;

the free end part of the V-shaped back turning component is provided with a buffer component which is contacted with the back surface of the other back turning plate;

the buffering assembly comprises a fixed plate connected to free end parts of the two V-shaped back turning components, a limiting guide hole is formed in the gravity center of the fixed plate, a fixed support frame, an elastic reciprocating member and a backing plate element are sequentially arranged on one side of the fixed plate along the axis direction of the limiting guide hole, a guide shaft which sequentially penetrates through the fixed support frame, the elastic reciprocating member and the backing plate element is sleeved in the limiting guide hole, a moving sleeve is further sleeved on the guide shaft in a sliding mode, and one end of the moving sleeve is connected with the elastic reciprocating member;

the elastic reciprocating moving piece consists of a transverse supporting plate sleeved on the guide shaft, two baffles connected to two ends of the transverse supporting plate respectively, an arc-shaped supporting piece with one end connected to the two baffles respectively, and two pressure springs connecting the transverse supporting plate and the fixed supporting frame; the other ends of the two arc-shaped supporting pieces are connected with guide sleeves, and the guide sleeves are in sliding fit with the guide shafts;

the arc-shaped supporting piece is made of a rigid material;

the base plate element consists of a middle connecting plate and two base plates connected to two free end parts of the middle connecting plate, and the center of the middle connecting plate is connected with the guide shaft.

An electric push rod is fixed at the lower end of the back of the bed body, the left and right V-shaped back turning parts at the back are connected to the bottom surface of one back turning plate, the electric push rod stretches and retracts to drive the V-shaped back turning parts to swing, so that the turning parts rotate, and the left and right back turning plates are turned by contacting the back turning plates through rollers, so that the back turning function is realized.

The back turning electric push rod fixed on the left side of the bed body frame below the back turning plate operates, and during a pushing process, the V-shaped back turning part drives the right back turning plate to turn over, and the left back turning plate is fixed; during return, the V-shaped back turning component drives the left back turning plate to turn, the right back turning plate is fixed, the back turning angles on the two sides can reach 80 degrees at most, and the old can be conveniently helped to turn back. Meanwhile, the folding guardrails are arranged on two sides of the bed body, can be manually opened and folded by the old, and play a role in protecting the old when sleeping to prevent the old from falling down.

As a further optimization scheme of the aging-assisting electric bed based on the novel mechanical structure provided by the invention, the lifting support part is a lifting part arranged between the bed frame and the bed base, the lifting part is a lifting electric push rod, and the lifting function of the bed body is realized by pushing and pulling a parallelogram mechanism between the bed body and the bed bottom.

As a further optimization scheme of the old-helping electric bed based on the novel mechanical structure, the bed bottom bracket part comprises a bed seat, two directional wheels arranged at the front end of the bed seat and two universal wheels arranged at the rear end of the bed seat; wherein, four wheels arranged on the bed seat can realize the movement of the bed and can be fixed at a certain position at any time.

The lifting electric push rod arranged on the bed seat pushes the transverse connecting rod fixed on the bed body, and the two groups of supports forming the parallelogram lifting mechanism rotate around the fixed point, so that the translational lifting of the bed body is realized, and the height of the bed body can be changed within the range from 50cm to 80 cm.

As a further optimization scheme of the old-helping electric bed based on the novel mechanical structure, the folding guardrail comprises two transverse connecting rods arranged up and down and vertical connecting rods arranged between the two transverse connecting rods at equal intervals, and buttons for controlling the guardrail to unfold or fold are arranged on the folding guardrail; the old man can manually operate the button below the guardrail to enable the guardrail to be unfolded or folded, so that the old man can sleep or get on or off the bed more safely.

Compared with the prior art, the invention has the beneficial effects that: the product of the invention is characterized in that:

1. the invention comprises a bed bottom bracket part, a lifting support part, a bed body and a folding guardrail, wherein the bed body comprises a bed body frame, two connecting rod assemblies, a back-lifting leg-bending part, a leg support mechanism, a hip support base plate, a head pillow plate and a back-turning mechanism, and the bed body is independent and does not interfere with each other, thereby being simple and convenient to operate.

2. The lifting function of the bed body can be stably and safely realized by utilizing the parallelogram lifting mechanism at the lower part of the bed body; aiming at different old people, the lifting support part can be adjusted to the most appropriate height to help the old people to go up and down to bed more safely, conveniently and quickly.

3. The back lifting function and the leg falling function are linked, wherein the back lifting angle can be changed within the range of 0-80 degrees, the old can be helped to lift the back more freely, and the leg falling function can help the old to get on and off the bed more laborsavingly.

4. An electric push rod is fixed at the lower end of the back of the bed body, the left and right back turning parts are connected to the bottom surface of one back turning plate, the electric push rod stretches and retracts to drive the V-shaped back turning part to swing, so that the turning part rotates and contacts with the back turning plate through a roller to turn over the left and right back turning plates, and therefore the back turning function is achieved; effectively relieving the pain and the discomfort caused by the old lying in bed for a long time and avoiding the bedsore on the back.

5. The back lifting function and the leg bending function are linked, and the movement of the two mechanisms can be realized only by one push rod motor. The back rising angle can be changed within the range of 0-80 degrees, the old can finish the back rising action without taking little effort, and the leg bending part moves while rising the back, thereby smoothly helping the old to perform the leg bending action.

6. An electric push rod is fixed at the lower end of the back of the bed body, the left and right V-shaped back turning parts at the back are connected to the bottom surface of one back turning plate, the electric push rod stretches and retracts to drive the V-shaped back turning parts to swing, so that the turning parts rotate and are contacted with the back turning plates through rollers, the left and right back turning plates are turned, the left and right back turning functions are further realized, the back turning angle can be adjusted within the range of 0-80 degrees, and the pain and discomfort caused by long-term lying of the old are effectively relieved.

7. The free end of the V-shaped back turning component is provided with a buffer component which is in back contact with the other back turning plate, so that the back of the old is buffered, and the overall comfort level is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a first overall structural diagram of an embodiment of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic overall structure diagram of the second embodiment of the present invention.

Fig. 4 is a schematic overall structure diagram of the third embodiment of the present invention.

Fig. 5 is a first partial structural diagram according to an embodiment of the present invention.

Fig. 6 is a right side view of fig. 2.

Fig. 7 is a partial structural schematic diagram of a second embodiment of the invention.

Fig. 8 is a schematic structural diagram of a buffer assembly according to an embodiment of the invention.

Fig. 9 is a schematic structural view of a fixing support frame according to an embodiment of the invention.

FIG. 10 is a schematic diagram of a resilient shuttle according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a backing plate element according to an embodiment of the present invention.

Wherein the reference numerals are:

1. a bed bottom support portion;

2. a lifting support portion;

3. a bed body; 30. a bed frame; 300. a cross bar; 301. a transverse strut; 31. a connecting rod assembly; 310. a linkage rod; 32. a back-raising leg-bending member; 320. a powered pushrod member; 33. a leg support mechanism; 330. a rotating member; 331. an L-shaped rotating member; 34. a hip support pad; 35. a head pillow plate; 36. a back turning mechanism; 360. a cross beam; 361. inclining the support rod; 362. a turnover piece; 363. a V-shaped back-turning component; 364. building a rod; 365. a power mechanism; 367. turning over the back plate;

4. folding the guard bar;

5. a buffer assembly; 50. a fixing plate; 500. limiting a guide hole; 51. fixing a support frame; 52. a resilient reciprocating member; 53. a backing plate element; 54. a guide shaft; 55. moving the sleeve; 520. a transverse support plate; 521. a baffle plate; 522. an arc-shaped support member; 523. a pressure spring; 530. a middle connecting plate; 531. a base plate;

10. a support;

11. a bed base;

12. a directional wheel;

13. a universal wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

Example 1

Referring to fig. 1 to 11, the technical solution of the invention is that an electric bed for helping old people based on a novel mechanical structure comprises a bed bottom bracket part 1, wherein a lifting support part 2, a bed body 3 supported by the lifting support part 2, and a folding guardrail 4 arranged on the side surface of the bed body 3 are arranged above the bed bottom bracket part 1.

Specifically, the bed body 3 is composed of a bed body frame 30, two connecting rod assemblies 31, a back-raising leg-bending part 32, a leg supporting mechanism 33, a hip supporting pad plate 34, a head pillow plate 35 and a back-turning mechanism 36;

the hip support pad 34 is fixedly provided at the middle of the bed frame 30, and the head rest 35 is attached to the end of the bed frame 30.

Specifically, the bed frame 30 is composed of two sets of supports 10 of the bed bottom support part 1, two cross bars 300 respectively hinged to the tops of the two sets of supports 10, and a transverse stay 301 located between the two cross bars 300.

Specifically, the two link assemblies 31 are respectively located at two sides of the bed frame 30, each link assembly 31 is rotatably connected to the rotating members 330 at two sides of the leg supporting mechanism 33 by one end, the other end is hinged to the linkage rod 310 of the L-shaped rotating member 331 at two sides of the back turning mechanism 36, and the two rotating members 330 and the two L-shaped rotating members 331 are respectively hinged at two sides of the bed frame 30.

Specifically, the back-raising leg-bending part 32 is a power push rod part 320 connected between the cross rod 300 near the front end of the bed 3 and the transverse support rod 301, and is used for pushing the transverse support rod 301 at the lower part of the bed frame 30; the power push rod component 320 is composed of a back lifting leg bending motor and a power push rod.

The back-lifting leg-bending motor at the lower end of the bed body is fixed on the bed body frame, and the back-lifting leg-bending motor enables the four-bar linkage to swing by pushing the cross rod 300 below the bed body, so that the back-lifting leg-bending part 32 can be turned over.

The back-lifting leg-bending motor of the back-lifting leg-bending part 32 is started, the power push rod enables the four-bar linkage mechanisms on the two sides of the bed body 3 to swing by pushing the cross rod 300 on the lower portion of the bed body, the leg-bending part turns downwards while the back structure turns upwards anticlockwise, and the back-lifting leg-bending linkage function is achieved; the back rising angle can reach 80 degrees, which is enough to help the old to rise, and the back falling and leg lifting functions are realized through the return stroke of the motor.

Specifically, the leg support mechanism 33 includes two rotating members 330 sequentially hinged to the bed frame 30 and the linkage rod 310, and a leg support pad connected between the two rotating members 330, and the leg support pad has an L-shaped cross section.

Specifically, the back-turning mechanism 36 includes a cross beam 360 disposed between two L-shaped rotation members 331, an inclined support rod 361 connected to the cross beam 360, a turning member 362 hinged to the inclined support rod 361, two back-turning plates 367 hinged to each other and disposed on the inclined support rod 361, two V-shaped back-turning members 363 rotatably connected to the bottom surface of one of the back-turning plates 367 side by side, a guide hole penetrating through the turning member 362, a tie rod 364 fixing the two V-shaped back-turning members 363, a power mechanism 365 having one end hinged to one side of the bed frame 30 and the other end movably connected to the turning member 362 for driving the turning member to turn, the power mechanism 365 being a back-turning electric push rod;

the free end part of the V-shaped back-turning component 363 is provided with a buffer component 5 which is in back contact with the other back-turning plate 367;

the buffer assembly 5 comprises a fixed plate 50 connected to the free end parts of two V-shaped back turning parts 363, a limiting guide hole 500 is formed in the gravity center of the fixed plate 50, a fixed support frame 51, an elastic reciprocating member 52 and a backing plate element 53 are sequentially arranged on one side of the fixed plate 50 along the axial direction of the limiting guide hole 500, a guide shaft 54 sequentially penetrating through the fixed support frame 51, the elastic reciprocating member 52 and the backing plate element 53 is sleeved in the limiting guide hole 500, a moving sleeve 55 is further sleeved on the guide shaft 54 in a sliding mode, and one end of the moving sleeve 55 is connected with the elastic reciprocating member 52;

the elastic reciprocating member 52 is composed of a transverse support plate 520 sleeved on the guide shaft 54, two baffles 521 respectively connected to two ends of the transverse support plate 520, an arc-shaped support 522 with one end connected to the two baffles 521, and two compression springs 523 connecting the transverse support plate 520 and the fixed support 51; the other ends of the two arc-shaped supporting pieces 522 are connected with a guide sleeve 523, and the guide sleeve 523 is in sliding fit with the guide shaft 54;

the arc-shaped support 522 is made of a rigid material;

the pad member 53 is composed of a middle connection plate 530 and two pads 531 connected to both free ends of the middle connection plate 530, and the guide shaft 54 is connected to the center of the middle connection plate 530.

An electric push rod is fixed at the lower end of the back of the bed body, the left V-shaped back overturning component 363 and the right V-shaped back overturning component 363 on the back are connected to the bottom surface of one of the back overturning plates 367, the electric push rod stretches and retracts to drive the V-shaped back overturning component 363 to swing, so that the overturning component 362 rotates, the left back overturning plate 367 and the right back overturning plate 367 are overturned through contact of rollers and the back overturning plates, and therefore the back overturning function is achieved.

A back overturning electric push rod fixed on the left side of the machine body frame 30 below the back overturning plate 367 operates, and during a pushing process, the V-shaped back overturning part 363 drives the right back overturning plate 367 to overturn, and the left back overturning plate 367 is fixed; during return, the V-shaped back-turning component 363 drives the left back-turning plate 367 to turn, the right back-turning plate 367 is fixed, the back-turning angle of the two sides can reach 80 degrees at most, and the old can be conveniently turned. Meanwhile, the two sides of the bed body 3 are provided with the folding guardrails 4 which can be manually opened and folded by the old, so that the old can play a role in protection and can be prevented from falling down when sleeping.

Specifically, the lifting support part 2 is a lifting part arranged between the bed frame 30 and the bed base 11, and the lifting part is a lifting electric push rod, and the lifting function of the bed is realized by pushing and pulling a parallelogram mechanism between the bed and the bed bottom.

Specifically, the bed bottom bracket part comprises a bed base 11, two directional wheels 12 arranged at the front end of the bed base 11, and two universal wheels 13 arranged at the rear end of the bed base 11; wherein, the four wheels installed on the bed base 11 can realize the movement of the bed and can be fixed at a certain position at any time.

The lifting electric push rods arranged on the bed base 11 push the transverse connecting rods fixed on the bed body 3, and the two groups of supports 10 forming the parallelogram lifting mechanism rotate around fixed points, so that the translational lifting of the bed body is realized, and the height of the bed body can be changed within the range from 50cm to 80 cm.

Specifically, the folding guardrail 4 comprises two transverse connecting rods arranged up and down and vertical connecting rods arranged between the two transverse connecting rods at equal intervals, and buttons for controlling the guardrail to unfold or fold are arranged on the folding guardrail 4; the old man can manually operate the button below the guardrail to enable the guardrail to be unfolded or folded, so that the old man can sleep or get on or off the bed more safely.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a based on novel mechanical structure helps old electric bed, includes bed end support part (1), its characterized in that the top of bed end support part (1) is equipped with lift support part (2), by lathe bed (3) that lift support part (2) supported, and set up and be in folding guardrail (4) of lathe bed (3) side.

2. The electric bed for helping old people based on a novel mechanical structure as claimed in claim 1, wherein the bed (3) is composed of a bed frame (30), two connecting rod assemblies (31), a back-raising leg-bending part (32), a leg supporting mechanism (33), a hip supporting pad plate (34), a head pillow plate (35) and a back-turning mechanism (36);

the hip supporting base plate (34) is fixedly arranged in the middle of the bed frame (30), and the head pillow plate (35) is connected to the tail end of the bed frame (30).

3. The electric bed for helping old people based on novel mechanical structure as claimed in claim 1 or 2, characterized in that said bed frame (30) is composed of two sets of brackets (10) of said bed bottom bracket part (1), two cross bars (300) hinged on top of two sets of brackets (10) respectively and a transverse brace (301) between two said cross bars (300).

4. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1-3, wherein two said connecting rod assemblies (31) are respectively located on both sides of said bed frame (30), each said connecting rod assembly (31) is rotatably connected to a rotating member (330) on both sides of said leg supporting mechanism (33) by one end, the other end is hinged to a linkage rod (310) of an L-shaped rotating member (331) on both sides of said back turning mechanism (36), and two said rotating members (330) and two said L-shaped rotating members (331) are respectively hinged on both sides of said bed frame (30).

5. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1-4, wherein the back-raising leg-bending part (32) is a power push rod part (320) connected between the cross rod (300) near the front end of the bed (3) and the transverse support rod (301) for pushing the transverse support rod (301) at the lower part of the bed frame (30); the power push rod component (320) consists of a back lifting leg bending motor and a power push rod.

6. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1-5, wherein said leg supporting mechanism (33) comprises two said rotating members (330) hinged in turn to said bed frame (30) and to said linkage rod (310), a leg supporting pad connected between said two said rotating members (330), said leg supporting pad having an L-shape in cross section.

7. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1 to 6, wherein the back-turning mechanism (36) comprises a cross beam (360) disposed between the two L-shaped rotation members (331), a tilt support rod (361) connected to the cross beam (360), a turning member (362) hinged to the tilt support rod (361), two back-turning plates (367) hinged to each other and disposed on the tilt support rod (361), two V-shaped back-turning members (363) rotatably connected to the bottom surface of one back-turning plate (367) side by side, a tie bar (364) penetrating through a guide hole of the turning member (362) and fixing the two V-shaped back-turning members (363), one end of which is hinged to one side of the bed frame (30), and the other end of which is movably connected to the turning member (362), and a power mechanism (365) for driving the turning member to turn, the power mechanism (365) is a back turning electric push rod;

the free end of the V-shaped back-turning component (363) is provided with a buffer component (5) which is in back contact with the other back-turning plate (367);

the buffering assembly (5) comprises a fixing plate (50) connected to free end portions of two V-shaped back-turning components (363), a limiting guide hole (500) is formed in the center of gravity of the fixing plate (50), a fixed support frame (51), an elastic reciprocating member (52) and a backing plate element (53) are sequentially arranged on one side of the fixing plate (50) along the axis direction of the limiting guide hole (500), a guide shaft (54) sequentially penetrating through the fixed support frame (51), the elastic reciprocating member (52) and the backing plate element (53) is sleeved in the limiting guide hole (500), a moving sleeve (55) is further sleeved on the guide shaft (54) in a sliding mode, and one end of the moving sleeve (55) is connected with the elastic reciprocating member (52);

the elastic reciprocating element (52) consists of a transverse support plate (520) sleeved on the guide shaft (54), two baffles (521) respectively connected to two ends of the transverse support plate (520), an arc-shaped support (522) with one end respectively connected to the two baffles (521), and two pressure springs (523) connecting the transverse support plate (520) and the fixed support frame (51); the other ends of the two arc-shaped supporting pieces (522) are connected with guide sleeves (523), and the guide sleeves (523) are in sliding fit with the guide shafts (54);

the arc-shaped support piece (522) is made of a rigid material;

the pad element (53) is composed of a middle connecting plate (530) and two pads (531) connected to two free ends of the middle connecting plate (530), and the center of the middle connecting plate (530) is connected with the guide shaft (54).

8. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1-7, wherein the lifting support part (2) is a lifting component arranged between the bed frame (30) and the bed base (11), and the lifting component is a lifting electric push rod.

9. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1-8, wherein the bed bottom bracket part comprises a bed base (11), two directional wheels (12) arranged at the front end of the bed base (11), and two universal wheels (13) arranged at the rear end of the bed base (11).

10. The electric bed for helping old people based on novel mechanical structure as claimed in any one of claims 1-9, characterized in that said folding guardrail (4) comprises two transverse connecting rods arranged up and down, and a vertical connecting rod arranged between the two transverse connecting rods at equal intervals, and said folding guardrail (4) is provided with a button for controlling the unfolding or folding of the guardrail.