CN220655210U - Leg linkage mechanism and electric bed - Google Patents

Abstract

The utility model relates to an electric bed's technical field especially relates to a shank link gear and electric bed, it includes the chassis, the buttock bed board, shank bed board and foot bed board, buttock bed board and chassis fixed connection, the both ends of shank bed board rotate with buttock bed board and foot bed board respectively and are connected, the chassis is provided with first driving piece, first driving piece is used for driving shank bed board and rotates, coupling assembling includes first connecting rod, second connecting rod and third connecting rod, the one end and the chassis rotation of first connecting rod are connected, the other end and the second connecting rod rotation of first connecting rod are connected, the one end and the middle part rotation of third connecting rod of first connecting rod are connected, the one end and the chassis rotation of third connecting rod are connected, the other end rotation of third connecting rod is connected with first connecting portion, first connecting portion offsets with foot bed board, the junction rotation of first connecting rod and second connecting rod is connected with the second connecting portion, second connecting portion and shank bed board butt. The utility model has the effect of reducing the abrasion between the bed circumference and the mattress.

Description

Leg linkage mechanism and electric bed

Technical Field

The application relates to the technical field of electric beds, in particular to a leg linkage mechanism and an electric bed.

Background

Along with the continuous improvement of our daily living standard and the continuous development of technology, intelligent home is gradually popularized, and the common bed is replaced by an electric bed so as to realize the purpose of more comfortable sleeping.

The electric bed mainly comprises a backrest plate, a hip plate, a leg plate and a foot plate, and can tilt the legs or the backrest to meet different use requirements of people. When the existing electric bed needs leg lifting, the connecting part of the leg bed board and the foot bed board is lifted firstly, one end of the foot bed board, which is far away from the leg bed board, is continuously close to the leg bed board in the lifting process and then lifted, and a mattress on the foot bed board can rub with the mattress, so that the mattress and the mattress are worn after long-time use.

Disclosure of Invention

The utility model provides a solve the problem that reduces the wearing and tearing between bed enclose and the mattress, provide a shank link gear and electric bed, adopt the technical scheme of foot edge rising earlier and then translation to reduce the direct contact between bed enclose and the mattress, greatly reduced the wearing and tearing between bed enclose and the mattress.

On the one hand, the leg linkage mechanism provided by the application adopts the following technical scheme:

the utility model provides a shank link gear, its includes chassis, buttock bed board, shank bed board and foot bed board, the buttock bed board with chassis fixed connection, the both ends of shank bed board respectively with the buttock bed board with foot bed board rotates to be connected, the chassis is provided with first driving piece, first driving piece is used for driving shank bed board and rotates, still includes coupling assembling, coupling assembling includes first connecting rod, second connecting rod and third connecting rod, the one end and the chassis rotation of first connecting rod are connected, the other end and the second connecting rod of first connecting rod rotate to be connected, the one end and the middle part rotation of third connecting rod of keeping away from first connecting rod are connected, the one end and the chassis rotation of third connecting rod are connected, the other end rotation of third connecting rod is connected with first connecting portion, first connecting portion offsets with the foot bed board, the junction rotation of first connecting rod and second connecting rod is connected with second connecting portion, second connecting portion and shank bed board butt.

Through adopting above-mentioned technical scheme, the chassis can provide the support for whole shank link gear, the buttock bed board, the mutual rotation connection between shank bed board and the foot bed board can make shank bed board and foot bed board perk, in order to satisfy the different postures of people's needs, state between shank bed board and the foot bed board can be adjusted through coupling assembling and the first driving piece, specifically, first driving piece drive shank bed board rotates, the shank bed board passes through the second connecting portion and drives first connecting rod round with the pivot of chassis rotation, first connecting rod, the second connecting rod, the fourth link mechanism is constituteed to third connecting rod and chassis, first connecting rod passes through the second connecting rod and drives the third connecting rod round with the pivot of chassis promptly, thereby make first connecting portion support the foot bed board and produce relative slip, the foot bed board can upwards be close to one side of shank bed board again under the combined action of shank bed board and first connecting portion, thereby avoid the mattress on the foot bed board and bed circumference direct contact and produced friction, thereby the wearing and tearing of mattress and bed circumference have been reduced.

Optionally, the connecting assembly is provided with two groups, and two groups connect through a supporting beam between the connecting assembly, the both ends of supporting beam respectively with two the opposite one side fixed connection of third connecting rod.

Through adopting above-mentioned technical scheme, coupling assembling sets up two sets of transmission stabilization effect that can increase between each bed board and between bed board and the chassis to improve the holding power to the bed board. The two third connecting rods are connected through the supporting beam, and the supporting beam can ensure the synchronization of linkage between the two groups of connecting components, so that the stability of the connecting components in transmission is enhanced.

Optionally, the first connecting portion and the second connecting portion are rollers.

Through adopting above-mentioned technical scheme, coupling assembling is in the transmission, and the gyro wheel can form rolling friction with shank bed board or foot bed board when butt shank bed board or foot bed board to make the transmission between coupling assembling and shank bed board or the foot bed board more smooth, the wearing and tearing is littleer.

Optionally, the first connecting portion and the second connecting portion are both sliders.

Through adopting above-mentioned technical scheme, when butt shank bed board or foot bed board are gone up to the slider, the slider can form sliding friction with shank bed board or foot bed board, and the slider can be great to shank bed board or foot bed board area of contact to form good supporting effect, and make shank bed board and foot bed board more stable in the transmission process.

Optionally, the leg portion bed board is close to the fixed slide rail that is provided with in one side of coupling assembling, the second coupling assembling is located in the slide rail and can follow slide rail length direction and remove.

Through adopting above-mentioned technical scheme, the slide rail can provide the removal track for second connecting portion, guarantees that second connecting portion remains to be connected with the shank bed board all the time and does not take place to break away from, has increased the stability of shank bed board.

Optionally, the first link, the second link, the third link and the chassis form a crank-rocker mechanism, and when the crank-rocker mechanism is in an initial state, the foot bed plate, the leg bed plate and the hip bed plate are in the same horizontal plane.

By adopting the technical scheme, in the four-bar mechanism formed by the first connecting bar, the second connecting bar, the third connecting bar and the underframe, the underframe is used as the frame and is the longest bar, half of the third connecting bar is the shortest bar, and the addition length of the first connecting bar and the second connecting bar is larger than the sum of the longest bar and the shortest bar, so that the crank rocker mechanism is formed. The crank rocker mechanism can provide relatively stable power output in the running process, particularly can still maintain relatively constant output torque under the condition of high load, and the leg bed board and the foot bed board can bear great stress in the using process, so that the crank rocker mechanism can ensure to bear great load and ensure stable power transmission. When the crank rocker mechanism is in an initial state, the three bed boards are in the same horizontal plane so as to meet the requirements of people on the mattress in a horizontal placement state.

Optionally, the chassis is fixed and is provided with a plurality of stoppers, when crank rocker mechanism is in initial state, the stopper offsets with foot's bed board and shank bed board.

Through adopting above-mentioned technical scheme, when crank rocker mechanism is in initial state, buttock bed board, shank bed board and foot bed board are in same horizontal plane promptly, still can exist the interval between shank bed board and foot bed board and the chassis, and this interval can be filled to the stopper to avoided shank bed board and foot bed board and the direct contact of bedstead, caused the wearing and tearing of bedstead, and the straightness between three bed boards is also guaranteed to the stopper.

Optionally, a limit frame is fixedly arranged on one side of the foot bed board far away from the leg bed board, and when the leg bed board and the foot bed board tilt, the limit frame is used for limiting the mattress.

Through adopting above-mentioned technical scheme, when shank bed board and foot's bed board are taking place to rotate, the mattress can break away from between bed board and follow foot's bed board department roll-off, and the spacing can carry out the joint spacing to the mattress, guarantees that the mattress is located the bed board top and laminates with the bed board all the time.

On the other hand, the technical scheme adopted by the electric bed is as follows:

optionally, including back board, second driving piece and shank link gear, the back board with the buttock bed board rotates to be connected, the second driving piece is installed in the chassis, the second driving piece is used for driving the back board and rotates.

By adopting the technical scheme, the backrest plate can provide the backrest for people, and the second driving piece can provide a rotating power source for the backrest plate. When the state of the back board needs to be adjusted, the second driving piece drives the back board to rotate, so that a certain included angle is formed between the back board and the hip bed board, and the requirement of people on the back board is met.

Optionally, the leg connecting device further comprises supporting feet, wherein the supporting feet are located on one side, away from the leg connecting mechanism, of the underframe, and the supporting feet are detachably connected with the underframe.

Through adopting above-mentioned technical scheme, electric bed in the in-service use, chassis and ground need interval one end distance, avoid chassis and ground direct contact to cause wearing and tearing, and the supporting legs can play the supporting effect to the chassis, can also avoid the wearing and tearing of chassis.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the crank-rocker mechanism formed by the first connecting rod, the second connecting rod, the third connecting rod and the underframe can enable the foot bed board to tilt upwards in the rotating process, so that the mattress is separated from the bed board firstly and is close to the leg bed board continuously, and abrasion between the mattress and the bed board is reduced;

2. when the first connecting part and the second connecting part are rollers, the friction born by the bed board in the rotating process is smaller, the transmission efficiency of the connecting assembly is higher and smoother, when the first connecting part and the second connecting part are sliding blocks, the stress area of the sliding blocks is larger, and when the connecting assembly is used for transmission, the sliding blocks are more stable, and more stable support can be provided for the bed board;

3. the back board can provide the back function after rotating certain angle, and the supporting legs can provide the support for the chassis to can reduce the wearing and tearing of chassis.

Drawings

FIG. 1 is a schematic view of the overall structure of a first embodiment of a leg linkage mechanism according to the present application;

FIG. 2 is a schematic illustration of the initial position of the overall structure of one embodiment of the leg linkage of the present application;

FIG. 3 is a schematic view of a connecting assembly of a first embodiment of a leg linkage mechanism;

FIG. 4 is a schematic view of a connecting assembly of a second embodiment of a leg linkage mechanism;

FIG. 5 is a schematic view of the overall structure of an embodiment of the electric bed of the present application;

reference numerals illustrate: 1. a chassis; 11. a cross beam; 12. a longitudinal beam; 13. a limiting block; 14. supporting feet; 2. buttock bed board; 3. leg bed boards; 31. a support frame; 32. a limiting frame; 33. a slide rail; 4. a foot bed board; 41. a contact piece; 5. a connection assembly; 51. a first link; 52. a second link; 53. a third link; 54. a first connection portion; 55. a second connecting portion; 6. a first driving member; 7. a support beam; 8. a backboard; 9. and a second driving member.

Detailed Description

In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The present application is described in further detail below in conjunction with fig. 1-5.

The embodiment of the application discloses a leg linkage mechanism, referring to fig. 1, it includes chassis 1, buttock bed board 2, leg bed board 3, foot bed board 4 and coupling assembling 5. The chassis 1 is used for supporting and stabilizing the whole linkage mechanism, the hip bed board 2 is fixedly connected with the chassis 1, two ends of the leg bed board 3 are respectively connected with the hip bed board 2 and the foot bed board 4 through hinges in a rotating mode, the chassis 1 is provided with a first driving piece 6, the first driving piece 6 is preferably an electric cylinder, the first driving piece 6 is installed on the chassis 1 and is connected with the chassis 1 in a rotating mode, an output shaft of the first driving piece 6 is connected with the leg bed board 3 in a rotating mode, and the first driving piece 6 can drive the leg bed board 3 to rotate around a rotating axis with the hip bed board 2. The underframe 1, the leg bed plates 3 and the foot bed plates 4 are connected through connecting components 5, two groups of connecting components 5 are arranged on two sides of the underframe 1, and the two groups of connecting components 5 are connected through supporting beams 7.

Referring to fig. 1 and 2, the chassis 1 is in a square frame shape, the chassis 1 comprises a cross beam 11 and a longitudinal beam 12, wherein the first driving member 6 is mounted on the longitudinal beam 12, one side of the cross beam 11, which is close to the connecting assembly 5, is fixedly provided with a plurality of limiting blocks 13, and when the hip bed plate 2, the leg bed plate 3 and the foot bed plate 4 are positioned on the same horizontal plane, the limiting blocks 13 are used for limiting the positions of the foot bed plate 4 and the leg bed plate 3, so that the leg bed plate 3 and the foot bed plate 4 are kept parallel when being positioned at the initial positions.

Referring to fig. 2, the leg bed board 3 is provided with a support frame 31, the support frame 31 is fixedly connected with the leg bed board 3, the support frame 31 is 8-shaped, and an output shaft of the first driving member 6 is rotatably connected with the support frame 31.

Referring to fig. 3, a limit frame 32 is fixedly arranged on one side of the foot bed board 4 far away from the leg bed board 3, the limit frame 32 is U-shaped, and can form a clamping effect with a mattress, when the leg bed board 3 and the foot bed board 4 tilt, the limit frame 32 is used for limiting the mattress, and the mattress is prevented from being separated from the leg bed board 3 and the foot bed board 4.

The connecting assembly 5 comprises a first connecting rod 51, a second connecting rod 52 and a third connecting rod 53, one end of the first connecting rod 51 is rotationally connected with the underframe 1, the other end of the first connecting rod 51 is rotationally connected with the second connecting rod 52, one end of the second connecting rod 52 far away from the first connecting rod 51 is rotationally connected with the middle part of the third connecting rod 53, one end of the third connecting rod 53 is rotationally connected with the underframe 1, the other end of the third connecting rod 53 is rotationally connected with a first connecting part 54, the first connecting part 54 abuts against the foot bed plate 4, the first connecting part 54 is in sliding connection with the foot bed plate 4, the connecting part of the first connecting rod 51 and the second connecting rod 52 is rotationally connected with a second connecting part 55, the second connecting part 55 abuts against the leg bed plate 3, and the second connecting part 55 is in sliding connection with the leg bed plate 3. The two third connecting rods 53 are fixedly connected through the supporting beam 7, so that the synchronism between the two third connecting rods 53 is ensured. The first link 51, the second link 52, the third link 53 and the chassis 1 form a four-bar mechanism, the chassis 1 is the longest bar, half of the third link 53 forms the shortest bar, the sum of the longest bar and the shortest bar is larger than the sum of the longest bar and the shortest bar, namely a crank rocker mechanism, the chassis 1 is used as a frame, the first link 51 is driven by the first driving piece 6 to swing in a certain angle relative to the chassis 1 as a driving bar, the third link 53 is driven by the second link 52 to swing in a following way, and is driven by the cylinder piston rod stroke and the limiting block 13, the included angle A between the leg bed plate 3 and the hip bed plate 2 is 0-30 degrees, and when A is 0 degrees, the leg bed plate 3 and the foot bed plate 4 are positioned on the same horizontal plane, namely the included angle is 0 degrees.

In fig. 2 and 3, the first connecting portion 54 and the second connecting portion 55 are rollers, the contact piece 41 is fixedly disposed on one side of the foot bed board 4 close to the first connecting portion 54, the peripheral side surface of the first connecting portion 54 abuts against the contact piece 41, and when the first connecting portion 54 and the contact piece 41 are relatively displaced, rolling friction is formed between the first connecting portion 54 and the contact piece 41. The leg bed board 3 is close to the fixed slide rail 33 that is provided with in one side of second connecting portion 55, and slide rail 33 is the U type, and second connecting portion 55 is located slide rail 33, and the week side of second connecting portion 55 offsets with two lateral walls of slide rail 33 to along can rolling along slide rail 33 length direction.

The implementation principle of the first embodiment of the present application is as follows:

when the hip bed plate 2, the leg bed plate 3 and the foot bed plate 4 are positioned on the same horizontal plane, the leg linkage mechanism is in an initial state.

When the adjustment state is needed, the output shaft of the first driving piece 6 pushes the leg bed board 3 to rotate around the rotating connecting shaft with the hip bed board 2 through the supporting frame 31, the leg bed board 3 drives the second connecting part 55 to synchronously rotate through the sliding rail 33 while rotating, the second connecting part 55 drives the first connecting rod 51 to rotate around the rotating shaft with the underframe 1, the second connecting part 55 can roll in the sliding rail 33, the first connecting rod 51 drives the third connecting rod 53 to rotate through the second connecting rod 52, the third connecting rod 53 rotates around the rotating shaft with the underframe 1, the first connecting part 54 is abutted against the foot bed board 4, the foot bed board 4 is lifted to a certain height under the driving of the first connecting part 54 and the leg bed board 3, and then gradually approaches the leg bed board 3, so that the direct contact with the bed periphery is avoided, the friction between the mattress and the bed periphery is avoided, and the abrasion of the bed periphery and the mattress is reduced.

Embodiment two:

the difference between this embodiment and the first embodiment is that: referring to fig. 4, the first connection portion 54 and the second connection portion 55 are both sliders, the end face of the first connection portion 54 is attached to the contact piece 41 at the lower end of the foot bed board 4, the second connection portion 55 is located in the slide rail 33, and the upper and lower end faces of the second connection portion 55 are attached to the inner walls of the slide rail 33.

The implementation principle of the second embodiment of the present application is as follows:

when the first link 51 rotates, the second connection portion 55 can slide along the length direction of the slide rail 33 in the slide rail 33. The sliding block is in surface-to-surface contact during sliding, so that the contact area is large, the sliding process is more stable, and the supporting effect provided by the first connecting portion 54 and the second connecting portion 55 is better.

The embodiment of the application discloses an electric bed, referring to fig. 5, which includes a back plate 8, a second driving piece 9 and a leg linkage mechanism. The back board 8 is positioned on one side of the hip bed board 2 far away from the leg bed board 3 and is rotationally connected with the hip bed board 2, and the underframe 1 extends towards one side of the back board 8 and forms a supporting effect on the back board 8. The second driving member 9 is preferably an electric cylinder, the second driving member 9 is mounted on the chassis 1, and the second driving member 9 is used for driving the backboard 8 to rotate around a rotation shaft with the hip bed board 2. The bottom of the chassis 1 is detachably connected with a plurality of supporting feet 14, and the supporting feet 14 are distributed at intervals along the periphery of the chassis 1, and six are taken as an example in the application.

The implementation principle of the electric bed is as follows:

when the electric bed needs to be adjusted in different states, the foot bed board 4 and the leg bed board 3 can be adjusted in different states under the driving of the first driving piece 6, and the back board 8 can rotate around the rotating shafts of the back board 8 and the hip bed board 2 under the driving of the second driving piece 9, so that different use requirements are adjusted. The supporting feet 14 can provide stable support for the underframe 1, and the supporting feet 14 also enable the underframe 1 to form a certain interval with the ground, so that abrasion caused by direct contact with the ground is avoided.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a shank link gear, includes chassis (1), buttock bed board (2), shank bed board (3) and foot bed board (4), buttock bed board (2) with chassis (1) fixed connection, the both ends of shank bed board (3) respectively with buttock bed board (2) with foot bed board (4) rotate and are connected, chassis (1) is provided with first driving piece (6), first driving piece (6) are used for driving shank bed board (3) rotation, its characterized in that: still include coupling assembling (5), coupling assembling (5) include first connecting rod (51), second connecting rod (52) and third connecting rod (53), the one end and the chassis (1) of first connecting rod (51) rotate and are connected, the other end and the second connecting rod (52) of first connecting rod (51) rotate and are connected, the one end and the middle part rotation of third connecting rod (53) of first connecting rod (51) are kept away from to second connecting rod (52), the one end and the chassis (1) of third connecting rod (53) rotate and are connected, the other end rotation of third connecting rod (53) is connected with first connecting portion (54), first connecting portion (54) and foot's bed board (4) sliding connection, the junction rotation of first connecting rod (51) and second connecting rod (52) is connected with second connecting portion (55), second connecting portion (55) and shank's bed board (3) sliding connection.

2. A leg linkage according to claim 1, wherein: the connecting components (5) are provided with two groups, the two groups of connecting components (5) are connected through supporting beams (7), and two ends of the supporting beams (7) are fixedly connected with one side, opposite to the two third connecting rods (53), of each other.

3. A leg linkage according to claim 1, wherein: the first connecting part (54) and the second connecting part (55) are rollers.

4. A leg linkage according to claim 1, wherein: the first connecting part (54) and the second connecting part (55) are both sliding blocks.

5. A leg linkage according to claim 3 or 4, wherein: the leg bed board (3) is fixedly provided with a sliding rail (33) at one side close to the connecting component (5), and the second connecting part (55) is positioned in the sliding rail (33) and can move along the length direction of the sliding rail (33).

6. A leg linkage according to claim 1, wherein: the first connecting rod (51), the second connecting rod (52), the third connecting rod (53) and the underframe (1) form a crank-rocker mechanism, and when the crank-rocker mechanism is in an initial state, the foot bed plate (4), the leg bed plate (3) and the hip bed plate (2) are positioned on the same horizontal plane.

7. A leg linkage as claimed in claim 6, wherein: the chassis (1) is fixedly provided with a plurality of limiting blocks (13), and when the crank rocker mechanism is in an initial state, the limiting blocks (13) are propped against the foot bed plate (4) and the leg bed plate (3).

8. A leg linkage according to claim 1, wherein: one side of the foot bed plate (4) far away from the leg bed plate (3) is fixedly provided with a limiting frame (32), and when the leg bed plate (3) and the foot bed plate (4) tilt, the limiting frame (32) is used for limiting the mattress.

9. An electric bed, characterized in that: the novel chair comprises a back rest plate (8), a second driving piece (9) and the leg linkage mechanism as claimed in any one of claims 1-8, wherein the back rest plate (8) is rotationally connected with the hip bed plate (2), the second driving piece (9) is installed on the underframe (1), and the second driving piece (9) is used for driving the back rest plate (8) to rotate.

10. An electric bed as claimed in claim 9, wherein: the leg linkage mechanism further comprises supporting feet (14), wherein the supporting feet (14) are located on one side, far away from the leg linkage mechanism, of the underframe (1), and the supporting feet (14) are detachably connected with the underframe (1).