CN113876137B

CN113876137B - Adjustable electric bed

Info

Publication number: CN113876137B
Application number: CN202111289121.9A
Authority: CN
Inventors: 王召伟; 盖后磊
Original assignee: Anhui Jinbaihe Medical Equipment Co ltd
Current assignee: Anhui Jinbaihe Medical Equipment Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2023-05-09
Anticipated expiration: 2041-11-02
Also published as: CN113876137A

Abstract

An adjustable electric bed comprises a back plate, a waist plate, a knee plate and a foot plate, wherein the back plate, the waist plate, the knee plate and the foot plate are sequentially fixed on the top surface of a detachable bedstead assembly, a guardrail is fixed on the top surface of the back plate, a foot baffle frame is arranged on one side, far away from the knee plate, of the foot plate, and support legs are fixed on the bottom surface of the bedstead assembly; the bed frame assembly comprises a first side rod, a first connecting rod, a second side rod, a third side rod, a second connecting rod, a fourth side rod, a first supporting mechanism and a second supporting mechanism. The invention adopts two groups of compact single-side support assemblies and the bedstead assemblies assembled by the first connecting rods, the whole structure occupies small space, and the assembly and the disassembly are simple and convenient; and can independently support simultaneously through two sets of unilateral support assemblies, reduce the risk of losing support suddenly, can guarantee the holding power of electric bed, improved electric bed's security and stability.

Description

Adjustable electric bed

Technical Field

The invention belongs to the technical field of electric beds, and particularly relates to an adjustable electric bed.

Background

The electric bed can generally control the height of the head or foot of the bed board electrically and can adjust the bending degree of the bed board freely, and the electric bed can be divided into two main types, namely a row skeleton and a bed board type electric bed, wherein the row skeleton is called European type electric bed, and the bed board type electric bed is called American type electric bed. Vibration or music functions may be configured as needed, and a remote control may be connected with the mobile device nowadays, and the remote control is generally used in families or medical care.

The bedstead of electric bed is the overall connection structure that adopts generally to no matter transport and put and all need occupy great space, many space environment all are inconvenient installation and place, and the whole single bearing structure that also adopts simultaneously supports electric bed drive, if the condition of losing support function appears in single bearing structure, causes easily because of losing the impact that supports and cause serious even damage to the human body.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides an adjustable electric bed, which has the following specific technical scheme:

an adjustable electric bed comprises a back plate, a waist plate, a knee plate and a foot plate, wherein the back plate, the waist plate, the knee plate and the foot plate are sequentially fixed on the top surface of a detachable bedstead assembly, a guardrail is fixed on the top surface of the back plate, a foot baffle frame is arranged on one side, far away from the knee plate, of the foot plate, and support legs are fixed on the bottom surface of the bedstead assembly;

the bedstead assembly comprises a first side rod, a first connecting rod, a second side rod, a third side rod, a second connecting rod, a fourth side rod, a first supporting mechanism and a second supporting mechanism, wherein the first supporting mechanism and the second supporting mechanism are identical in structure and are symmetrically arranged, two sides of the first supporting mechanism are respectively connected with the second side rod and the fourth side rod to form a compact single-side supporting assembly, two sides of the second supporting mechanism are respectively connected with the first side rod and the third side rod to form another group of compact single-side supporting assemblies, the first connecting rod is connected between the first side rod and the second side rod, and the second connecting rod is connected between the third side rod and the fourth side rod.

Further, first supporting mechanism includes back strut, fixed box, first electric push rod, second electric push rod, knee brace subassembly, sufficient strut and spacing, fixed box connects between second side lever and fourth side lever, fixed box inboard is close to the second side lever and articulates there is first electric push rod, is close to the fourth side lever and articulates there is the second electric push rod, fixed box is close to top one side and articulates there is the back strut, back strut bottom end articulates in the flexible end of first electric push rod, fixed box top opposite side articulates there is adjustable location's knee brace subassembly, knee brace subassembly bottom articulates in the flexible end of second electric push rod, knee brace subassembly is kept away from fixed box one end and is articulated there is sufficient strut, it is spacing to be connected with between knee brace subassembly one side and the fourth side lever to keep away from the knee brace subassembly.

Further, the fixed box includes box body, keysets and fixed plate, the box body both sides are provided with two fixed plates respectively, the fixed plate top surface is close to the box body side and is provided with the keysets, box body, keysets and fixed plate are integrated into one piece structure, second side lever and fourth side lever are fixed in respectively between two fixed plates of homonymy, knee brace subassembly one side articulates between two keysets.

Further, knee brace subassembly includes changes strut, swivel post, locating piece and second cushion, it falls into to change the strut and winds section and braced section, it sets up in braced section downside to change around the section, it is fan-shaped to change around the section, it articulates in the keysets inside to change the section through the swivel post, it articulates in the flexible end of second electric putter to change around the section bottom, it is provided with the locating piece that is used for rotating the section and rises with keysets cooperation restriction to change around the section inside running through to change around the section, braced section bottom surface is fixed with the second cushion, the second cushion sets up in fourth side lever top.

Further, the two ends of the positioning block are respectively attached to the inner sides of the two fixing plates, the distance between the two adapter plates on the same side is smaller than the distance between the two fixing plates on the same side, and the positioning block is attached to the bottom surface of the adapter plate.

Further, knee brace subassembly still includes slider, bolt, first push rod, gear ring and second push rod, the inside inner chamber that is provided with of support section, the slider slides and sets up in the inner chamber of support section inside, first sliding connection has been seted up to support section lateral wall, the slider is inside to run through first sliding connection and is connected with the bolt, the slider lateral wall is connected with first push rod, the gear ring has been cup jointed to the rotor post lateral wall, the tooth's socket has been seted up to first push rod bottom surface, the tooth's socket meshes in the gear ring lateral wall, the gear ring lateral wall is connected with the second push rod, second push rod one end is connected in the locating piece lateral wall, the second sliding connection has been seted up to the inside of section of changeing, the second sliding connection is for taking the rotor post as the convex opening of centre of a circle, the locating piece runs through and pegs graft in sliding connection inside, the locating piece laminating is in fixed box inboard.

Further, the top surface of the second side rod is provided with a groove, a locating plate is inserted into the inner side of the groove, and the first connecting rod is inserted into the locating plate.

Furthermore, the positioning column is vertically connected to the inner bottom surface of the positioning sheet, and is inserted into the first connecting rod.

Further, the first cushion block is fixed on the top surface of the first connecting rod, the positioning column penetrates through the first connecting rod and is inserted into the first cushion block, and the first cushion block is arranged at the bottom of the back support frame.

The beneficial effects of the invention are as follows:

1. the two groups of compact single-side support assemblies and the first connecting rod are adopted for assembling the bedstead assemblies, the whole structure occupies small space, and the assembly and the disassembly are simple and convenient;

2. and can independently support simultaneously through two sets of unilateral support assemblies, reduce the risk of losing support suddenly, can guarantee the holding power of electric bed, improved electric bed's security and stability.

Drawings

FIG. 1 shows a schematic diagram of the overall structure of an adjustable electric bed of the present invention;

FIG. 2 shows an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic view of the first support mechanism of the present invention with the second side bar structure and the fourth side bar connection structure;

FIG. 4 shows a schematic view of the overall adjustable support state structure of the present invention;

FIG. 5 shows a schematic view of the structure of the fixing case of the present invention;

FIG. 6 shows a cross-sectional view of the knee brace assembly of the present invention;

FIG. 7 is a cross-sectional view showing the connection of the second side bar and the first link of the present invention;

the figure shows: 1. a bed frame assembly; 11. a first side bar; 12. a first link; 121. a first pad; 13. a second side bar; 131. a groove; 132. a positioning sheet; 133. positioning columns; 14. a third side bar; 15. a second link; 16. a fourth side bar; 17. a first support mechanism; 171. a back support; 172. a fixed box; 1721. a case body; 1722. an adapter plate; 1723. a fixing plate; 173. a first electrical push rod; 174. a second electric push rod; 175. a knee brace assembly; 1751. a rotating support; 17511. a first sliding interface; 17512. a second sliding interface; 1752. a slide block; 1753. a bolt; 1754. a first push rod; 17541. tooth slots; 1755. a rotating column; 1756. a gear ring; 1757. a second push rod; 1758. a positioning block; 1759. a second cushion block; 176. a foot support; 177. a limiting frame; 18. a second support mechanism; 2. guard bars; 3. a back plate; 4. waist plate; 5. a knee plate; 6. a foot plate; 7. a foot blocking frame; 8. and (5) supporting legs.

Detailed Description

The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides an adjustable electric bed, includes backplate 3, waist board 4, knee board 5 and sufficient board 6, backplate 3, waist board 4, knee board 5 and sufficient board 6 are fixed in proper order in detachable bedstead assembly 1 top surface, backplate 3 top surface is fixed with guardrail 2, sufficient board 6 is kept away from knee board 5 one side and is set up by sufficient fender frame 7, bedstead assembly 1 bottom surface is fixed with stabilizer blade 8;

the bed frame assembly 1 comprises a first side rod 11, a first connecting rod 12, a second side rod 13, a third side rod 14, a second connecting rod 15, a fourth side rod 16, a first supporting mechanism 17 and a second supporting mechanism 18, wherein the first supporting mechanism 17 and the second supporting mechanism 18 are identical in structure and are symmetrically arranged, two sides of the first supporting mechanism 17 are respectively connected with the second side rod 13 and the fourth side rod 16 to form a compact single-side supporting assembly, two sides of the second supporting mechanism 18 are respectively connected with the first side rod 11 and the third side rod 14 to form another group of compact single-side supporting assemblies, a first connecting rod 12 is connected between the first side rod 11 and the second side rod 13, and a second connecting rod 15 is connected between the third side rod 14 and the fourth side rod 16;

the two groups of compact single-side support assemblies and the first connecting rod are adopted for assembling the bedstead assemblies, the whole structure occupies small space, and the assembly and the disassembly are simple and convenient;

and can independently support simultaneously through two sets of unilateral support assemblies, reduce the risk of losing support suddenly, can guarantee the holding power of electric bed, improved electric bed's security and stability.

As shown in fig. 3, the first supporting mechanism 17 includes a back support 171, a fixed box 172, a first electric push rod 173, a second electric push rod 174, a knee support assembly 175, a foot support 176, and a limit frame 177, wherein the fixed box 172 is connected between the second side rod 13 and the fourth side rod 16, the first electric push rod 173 is hinged to the inner side of the fixed box 172 near the second side rod 13, the second electric push rod 174 is hinged to the inner side of the fixed box 172 near the fourth side rod 16, the back support 171 is hinged to the side of the fixed box 172 near the top, the bottom end of the back support 171 is hinged to the telescopic end of the first electric push rod 173, the other side of the top of the fixed box 172 is hinged to the telescopic end of the second electric push rod 174, the knee support assembly 175 is hinged to the telescopic end of the knee support 174, the foot support 176 is hinged to one end of the knee support assembly 175 far from the fixed box 172, and the limit frame 177 is connected between one side of the foot support 176 far from the knee support assembly 175 and the fourth side rod 16;

the first electric push rod and the second electric push rod are respectively utilized to drive the back support frame and the knee support assembly to overturn and support in the fixed box, and meanwhile, the knee support assembly can drive the foot support frame to ascend and support, the adjusting efficiency is high, and meanwhile, the maximum ascending height and the supporting position of the bottom can be respectively limited by utilizing the limit of the knee support assembly and the limit frame, so that the stability of the electric bed is further ensured.

As shown in fig. 3 and 5, the fixing box 172 includes a box body 1721, an adapter plate 1722 and a fixing plate 1723, two fixing plates 1723 are respectively disposed on two sides of the box body 1721, the adapter plate 1722 is disposed on a top surface of the fixing plate 1723 near a side of the box body 1721, the adapter plate 1722 and the fixing plate 1723 are in an integrated structure, the second side bar 13 and the fourth side bar 16 are respectively fixed between the two fixing plates 1723 on the same side, and one side of the knee brace assembly 175 is hinged between the two adapter plates 1722; the adoption integrated into one piece's fixed box can improve the joint strength to second side lever, fourth side lever and knee brace subassembly.

As shown in fig. 3 and 6, the knee brace assembly 175 includes a rotating bracket 1751, a rotating post 1755, a positioning block 1758, and a second cushion block 1759, where the rotating bracket 1751 is divided into a rotating section and a supporting section, the rotating section is disposed at the bottom side of the supporting section, the rotating section is fan-shaped, the rotating section is hinged inside the adapter plate 1722 through the rotating post 1755, the bottom end of the rotating section is hinged at the telescopic end of the second electric push rod 174, the positioning block 1758 for cooperating with the adapter plate 1722 to limit the rotating rising of the rotating section is penetratingly disposed inside the rotating section, the bottom surface of the supporting section is fixed with the second cushion block 1759, and the second cushion block 1759 is disposed at the top of the fourth side rod 16;

when the support section of the rotating support is rotated to be horizontal, the second cushion block is utilized to carry out laminating support on the top surface of the fourth side rod, so that stable structure is ensured, and meanwhile, when the second electric push rod pushes the rotating winding section to rotate and rise, the penetrating positioning block and the adapter plate are matched and limited, and the maximum rising height of the rotating winding section is limited, so that the electric bed is regulated and raised amplitude control is realized.

As shown in fig. 3, 5 and 6, two ends of the positioning block 1758 are respectively attached to the inner sides of the two fixing plates 1723, the distance between the two adaptor plates 1722 on the same side is smaller than the distance between the two fixing plates 1723 on the same side, and the positioning block 1758 is attached to the bottom surface of the adaptor plate 1722; the distance between the two adapter plates is smaller than the distance between the two fixed plates, so that the positioning block can move between the two fixed plates, and the maximum rising position is limited on the bottom surfaces of the two adapter plates.

The knee brace assembly 175 further comprises a sliding block 1752, a bolt 1753, a first push rod 1754, a gear ring 1756 and a second push rod 1757, wherein an inner cavity is formed in the supporting section, the sliding block 1752 is arranged in the inner cavity of the supporting section in a sliding mode, a first sliding joint 17511 is formed in the side wall of the supporting section, the sliding block 1752 penetrates through the first sliding joint 17511 and is connected with the bolt 1753, the side wall of the sliding block 1752 is connected with the first push rod 1754, the gear ring 1756 is sleeved on the side wall of the rotary column 1755, a tooth slot 17541 is formed in the bottom surface of the first push rod 1754, the tooth slot 17541 is meshed with the side wall of the gear ring 1756, the second push rod 1757 is connected with the side wall of the gear ring 1756, one end of the second push rod 1757 is connected with the side wall of the positioning block 1758, a second sliding joint 17512 is formed in the side wall of the rotary section, the second sliding joint 17512 is in a circular arc opening taking the rotary column 1755 as a circle center, the positioning block 1758 penetrates through and is spliced in the sliding joint inside, and the inner side of the positioning block 172 is fixedly attached to the box 172;

the bolts are pushed to enable the sliding blocks to slide outside the supporting section of the rotating support, the gear ring meshed with the first push rod is driven to rotate stably, and therefore the second push rod drives the positioning block to move and adjust inside the second sliding interface, adjustment of the position of the positioning block, which is matched with the fixed box, is achieved, and operation is simple and convenient.

As shown in fig. 3, 4 and 7, the top surface of the second side rod 13 is provided with a groove 131, the inner side of the groove 131 is inserted with a positioning piece 132, and the first connecting rod 12 is inserted into the positioning piece 132; the first connecting rod is inserted and fixed in the locating piece, so that the stability of connection between the second side rod and the first connecting rod is improved.

The bottom surface of the inside of the positioning sheet 132 is vertically connected with a positioning column 133, and the positioning column 133 is inserted into the first connecting rod 12; utilize the reference column to carry out further location to first connecting rod fixedly, not only guarantee the precision of equipment, can also improve the stability of the structure of connection.

The top surface of the first connecting rod 12 is fixed with a first cushion block 121, the positioning column 133 penetrates through the first connecting rod 12 and is inserted into the first cushion block 121, and the first cushion block 121 is arranged at the bottom of the back support 171; utilize the bottom surface of first cushion to the back of body strut to support, peg graft the reference column in the inside of first cushion can guarantee the bearing structure intensity of first cushion, can also further improve the stability that the reference column was fixed a position to first connecting rod.

In the practice of the present invention,

firstly, the electric bed is assembled according to fig. 1, 2, 3 and 7, a single-side support assembly formed by connecting a second side rod 13, a first support mechanism 17 and a fourth side rod 16 is parallel to and opposite to another group of single-side support assemblies formed by connecting a first side rod 11, a second support mechanism 18 and a third side rod 14, then a first connecting rod 12 is connected to the first side rod 11 and the second side rod 13, and a second connecting rod 15 is connected to the third side rod 14 and the fourth side rod 16;

when the first connecting rod 12 and the second side rod 13 are assembled and connected, the first connecting rod 12 is inserted into the positioning piece 132 of the groove 131 on the top surface of the second side rod, the positioning column 133 on the positioning piece 132 is inserted into the first cushion block 121 through the first connecting rod 12 for fixing, the same first connecting rod 12 and the first side rod 11 are positioned and fixed, and the second connecting rod 15 and the third side rod 14 and the fourth side rod 16 are positioned and fixed respectively, so that the integral assembly of the bedstead assembly 1 is completed;

then fixing the backboard 3 on the back support 171, fixing the waist board 4 on the top surface of the box body 1721 of the integrally formed fixed box 172, fixing the knee board 5 on the rotating support 1751 of the knee support assembly 175, fixing the foot board 6 on the foot support 176, and finally connecting the four support feet 8 on the bottom surfaces of the first side bar 11, the second side bar 13, the third side bar 14 and the fourth side bar 16 respectively to complete the assembly of the electric bed;

then according to fig. 3, fig. 4, fig. 5 and fig. 6, when a human body lies on the electric bed, by simultaneously starting the first electric push rod 173 of the first supporting mechanism 17 and the second supporting mechanism 18, the back support frame 171 rotates in the adapter plate 1722 on the box body 1721, the back plate 3 is driven to lift on one side to support the back of the human body, then the second electric push rod 174 is started to push the rotating support frame 1751 of the knee support assembly 175 to rotate on the other two adapter plates 1722, the second cushion block 1759 is separated from the top surface of the fourth side rod 16, the fan-shaped rotating winding section of the rotating support frame 1751 rotates in the adapter plate 1722 through the rotating post 1755, the supporting section of the rotating support frame 1751 drives the knee plate 5 to lift, and simultaneously drives the hinged foot support frame 176 to lift, and under the connection effect of the limiting frame 177, the tail end of the foot support frame 176 is supported;

as the second electric push rod 174 pushes the rotary support 1751 to rotate until the positioning block 1758 extending from the inside of the second sliding interface 17512 of the rotary support 1751 moves to the position of the adaptor plate 1722 on the inner side of the two fixed plates 1723, the distance between the two adaptor plates 1722 is smaller than the distance between the two fixed plates 1723, and the positioning block 1758 can slide in a fitting manner with the two fixed plates 1723, so that when the positioning block 1758 reaches the top surface of the adaptor plates 1722, the limitation of the rotary support 1751 in rotary support is realized, and the support section of the rotary support 1751 reaches the maximum inclination angle;

when the rising amplitude of the knee needs to be adjusted, before a human body lies on the electric bed, the first sliding port 17511 on the supporting section of the rotating support 1751 is rotated by rotating the bolt 1753 and sliding the first sliding port 17511, the sliding block 1752 is driven to slide in the inner cavity of the supporting section, the first push rod 1754 is pushed by the sliding block 1752 to move, the gear ring 1756 meshed through the tooth slot 17541 rotates on the rotary column 1755, the second push rod 1757 connected on the gear ring 1756 takes the rotary column 1755 as the center of a circle, the positioning block 1758 is driven to rotate in the arc-shaped second sliding port 17512, finally, the positioning block 1758 is fixed by screwing the bolt 1753, the positioning position of the rotating block 1758 on the rotating support 1751 is adjusted, the maximum height of the rotating support 1751 is adjusted, the adjustment amplitude of the electric bed is controlled, and the electric bed is adjusted according to the requirements of a user, and the electric bed is adjusted to the support height.

The foregoing description of the preferred embodiment of the invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. An adjustable electric bed, characterized in that: the novel detachable foot rest comprises a back plate (3), a waist plate (4), a knee plate (5) and a foot plate (6), wherein the back plate (3), the waist plate (4), the knee plate (5) and the foot plate (6) are sequentially fixed on the top surface of a detachable bed rest assembly (1), a guardrail (2) is fixed on the top surface of the back plate (3), a foot baffle frame (7) is arranged on one side, far away from the knee plate (5), of the foot plate (6), and support legs (8) are fixed on the bottom surface of the bed rest assembly (1);

the bed frame assembly (1) comprises a first side rod (11), a first connecting rod (12), a second side rod (13), a third side rod (14), a second connecting rod (15), a fourth side rod (16), a first supporting mechanism (17) and a second supporting mechanism (18), wherein the first supporting mechanism (17) and the second supporting mechanism (18) are identical in structure and are symmetrically arranged, the two sides of the first supporting mechanism (17) are respectively connected with the second side rod (13) and the fourth side rod (16) to form a compact single-side supporting assembly, the two sides of the second supporting mechanism (18) are respectively connected with the first side rod (11) and the third side rod (14) to form another group of compact single-side supporting assembly, the first connecting rod (12) is connected between the first side rod (11) and the second side rod (13), and the second connecting rod (15) is connected between the third side rod (14) and the fourth side rod (16);

the first supporting mechanism (17) comprises a back support frame (171), a fixed box (172), a first electric push rod (173), a second electric push rod (174), a knee support assembly (175), a foot support frame (176) and a limiting frame (177), wherein the fixed box (172) is connected between the second side rod (13) and the fourth side rod (16), the inner side of the fixed box (172) is hinged with the first electric push rod (173) close to the second side rod (13), the second electric push rod (174) is hinged with the fourth side rod (16) close to the inner side of the fixed box, the back support frame (171) is hinged with the back support frame (172) close to one side of the top, the bottom end of the back support frame (171) is hinged with the telescopic end of the first electric push rod (173), the other side of the top of the fixed box (172) is hinged with the adjustable positioning knee support assembly (175), the bottom end of the knee support assembly (175) is hinged with the telescopic end of the second electric push rod (174), one end of the knee support assembly (175) is hinged with the foot support frame (176) far away from the fixed box (172), and the knee support assembly (176) is connected with the side of the fourth side rod (177) far away from the telescopic end of the side rod (16);

the fixed box (172) comprises a box body (1721), adapter plates (1722) and fixed plates (1723), two fixed plates (1723) are respectively arranged on two sides of the box body (1721), the adapter plates (1722) are arranged on the top surface of the fixed plates (1723) close to the side edges of the box body (1721), the adapter plates (1722) and the fixed plates (1723) are of an integrated structure, the second side rod (13) and the fourth side rod (16) are respectively fixed between the two fixed plates (1723) on the same side, and one side of the knee support assembly (175) is hinged between the two adapter plates (1722).

2. An adjustable electric bed according to claim 1, characterized in that: the knee brace assembly (175) comprises a rotating support (1751), a rotating post (1755), a positioning block (1758) and a second cushion block (1759), the rotating support (1751) is divided into a rotating winding section and a supporting section, the rotating winding section is arranged at the bottom side of the supporting section and is fan-shaped, the rotating winding section is hinged inside an adapter plate (1722) through the rotating post (1755), the bottom end of the rotating winding section is hinged at the telescopic end of the second electric push rod (174), the positioning block (1758) used for limiting the rotating winding section to rotate and rise in cooperation with the adapter plate (1722) is arranged inside the rotating winding section in a penetrating mode, the second cushion block (1759) is fixed to the bottom surface of the supporting section, and the second cushion block (1759) is arranged at the top of a fourth side rod (16).

3. An adjustable electric bed according to claim 2, characterized in that: the two ends of the positioning block (1758) are respectively attached to the inner sides of the two fixing plates (1723), the distance between the two adapter plates (1722) on the same side is smaller than the distance between the two fixing plates (1723) on the same side, and the positioning block (1758) is attached to the bottom surface of the adapter plates (1722).

4. An adjustable electric bed according to claim 3, characterized in that: the knee brace assembly (175) further comprises a sliding block (1752), a bolt (1753), a first push rod (1754), a gear ring (1756) and a second push rod (1757), an inner cavity is formed in the supporting section, the sliding block (1752) is arranged inside the inner cavity of the supporting section in a sliding mode, a first sliding interface (17511) is formed in the side wall of the supporting section, the sliding block (1752) penetrates through the first sliding interface (17511) and is connected with the bolt (1753), the side wall of the sliding block (1752) is connected with the first push rod (1754), a gear ring (1756) is sleeved on the side wall of the rotary column (1755), a tooth slot (17541) is formed in the bottom surface of the first push rod (1754), the tooth slot (17541) is meshed with the side wall of the gear ring (1756), the side wall of the gear ring (1756) is connected with a second push rod (1757), one end of the second push rod (1757) is connected with the side wall of the positioning block (1758), a second sliding interface (12) is formed in the inner portion of the rotary section, the second sliding interface (17512) is connected with the inner side of the positioning block (1758), and the second sliding interface (1754) is fixedly connected with the inner side of the rotary column (1755) through the circular arc opening (1758).

5. An adjustable electric bed according to claim 1, characterized in that: the top surface of the second side rod (13) is provided with a groove (131), a locating plate (132) is inserted into the inner side of the groove (131), and the first connecting rod (12) is inserted into the locating plate (132).

6. The adjustable electric bed of claim 5, wherein: the positioning column (133) is vertically connected to the inner bottom surface of the positioning sheet (132), and the positioning column (133) is inserted into the first connecting rod (12).

7. The adjustable electric bed of claim 6, wherein: the top surface of the first connecting rod (12) is fixed with a first cushion block (121), the positioning column (133) penetrates through the first connecting rod (12) and is inserted into the first cushion block (121), and the first cushion block (121) is arranged at the bottom of the back support frame (171).