CN210991244U

CN210991244U - Wheelchair with rocking chair function

Info

Publication number: CN210991244U
Application number: CN201921312244.8U
Authority: CN
Inventors: 李汉斯
Original assignee: Dongguan Leyuan Plastic Hardware Technology Co ltd
Current assignee: Dongguan Leyuan Plastic Hardware Technology Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-07-14
Anticipated expiration: 2029-08-14

Abstract

The utility model provides a wheelchair with rocking chair function, which comprises a chair body and a seat body, wherein the seat body comprises a bracket group which is symmetrical left and right, and the bracket group comprises an unstable quadrilateral structure which is formed by mutually hinging a first connecting rod, a second connecting rod, a third connecting rod and a joint plate and is provided with four hinging points; the locking device comprises a U-shaped clamping groove in the joint plate and a locking rod unit arranged on the third connecting rod, the locking rod unit can be limited at least two different positions of the third connecting rod, the locking rod unit is respectively clamped at the bottom of the U-shaped clamping groove and suspended in the U-shaped clamping groove, and a first elastic piece is arranged between the joint plate and the third connecting rod; the seat body is arranged on the left and right groups of joint plates. When the locking rod unit is suspended in the U-shaped clamping groove, the third connecting rod and the joint plate can relatively rotate within a limited angle, the rocking chair function can be realized by rotating the backrest, and the first elastic piece can provide elastic buffering and resetting functions for the rocking chair.

Description

Wheelchair with rocking chair function

Technical Field

The utility model relates to a pedestal technical field specifically indicates a wheelchair with rocking chair function.

Background

Seat bodies of existing wheelchairs (including pushable seats for disabled people, baby carriages and the like) are usually fixed structures, and lack comfort enhancement functions. For people who sit for a long time or need to take a wheelchair because their bodies cannot move, sitting postures with single posture can make their bodies stiff and fatigued, which is not good for health.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wheelchair which can relieve the physical stiffness caused by sedentary sitting.

In order to achieve the above object, the utility model adopts the following technical scheme:

a wheelchair with a rocking chair function comprises a seat body with a backrest and a seat board, and a seat body used for supporting the seat body, wherein the seat body comprises bracket groups which are bilaterally symmetrical, each bracket group comprises a longitudinal first connecting rod, a second connecting rod hinged to the front end of the first connecting rod, and a third connecting rod hinged to the rear end of the first connecting rod; the support group also comprises a joint plate, and the other ends of the second connecting rod and the third connecting rod are hinged with the joint plate, so that the first connecting rod, the second connecting rod, the third connecting rod and the joint plate form an unstable quadrilateral structure with four hinge points; the seat body also comprises a locking device arranged between the joint plate and the third connecting rod, the locking device comprises a U-shaped clamping groove arranged on the joint plate and a locking rod unit arranged on the third connecting rod, the locking rod unit can be limited at least two different positions of the third connecting rod, the locking rod unit is respectively clamped at the bottom of the U-shaped clamping groove and suspended in the U-shaped clamping groove, and a first elastic piece for buffering the relative rotation of the joint plate and the third connecting rod is arranged between the joint plate and the third connecting rod; the seat body is arranged on the left and right groups of joint plates of the seat body.

Furthermore, the bottom of the U-shaped clamping groove is provided with a plurality of clamping positions which are parallel and limit the locking rod unit, and a space for the locking rod unit to move back and forth is arranged between the two inner side walls of the U-shaped clamping groove.

Preferably, the third connecting rod has a sliding groove along the length direction, and the locking rod unit includes a first locking rod, a second elastic member and a handle unit, wherein two ends of the first locking rod are respectively matched with the left and right groups of sliding grooves, the second elastic member drives the first locking rod to be clamped into the bottom of the U-shaped clamping groove, and the handle unit reversely pulls the first locking rod and enables the first locking rod to be suspended in the U-shaped clamping groove.

Preferably, the handle unit includes that both ends rotate to be connected in the second locking lever of the U type between the left and right sides two sets of joint plates, have return type groove and will first locking lever and second locking lever are spacing in the handle of returning type inslot movably, have on the first locking lever radial butt second locking lever and radius and do not exceed the cam of U type draw-in groove degree of depth, when the handle pushed down, can make the second locking lever pass the cam summit backward and the card is placed in between cam and the return type inslot wall, make first locking lever break away from simultaneously the bottom of U type draw-in groove.

Preferably, a transverse supporting rod is further arranged between the left bracket group and the right bracket group, and the supporting rod can limit the pressing position of the handle.

Preferably, the handle is provided with a pedal, and the first lock rod can be separated from the U-shaped clamping groove by applying downward pressure to the pedal.

Further, a damping spring structure is arranged in the third connecting rod.

Further, the wheels are installed at the bottom of the seat body, brake rods and L-type brake pads are hinged to the seat body, and the brake rods and the brake pads form a lever structure, so that when the brake rods are pulled up and down, the brake pads are abutted to or separated from the wheels.

Furthermore, the front ends of the two sides of the seat board are hinged with a fourth connecting rod, and the other end of the fourth connecting rod is hinged with the front end of the first connecting rod.

The beneficial effects of the utility model reside in that: when the locking rod unit is suspended in the U-shaped clamping groove, the third connecting rod and the joint plate can rotate relatively around the hinged point, and the two inner side walls of the U-shaped clamping groove limit the locking rod unit, so that the third connecting rod and the joint plate can rotate relatively within a limited angle, the backrest can realize the function of the rocking chair through reciprocating rotation, the first elastic part can provide elastic buffering and resetting functions for the rocking chair, the use comfort is improved, and the rocking chair is more labor-saving.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a wheelchair according to an embodiment;

FIG. 2 is a schematic diagram of the seat structure in the embodiment;

FIG. 3 is a schematic view of the joint plate;

FIG. 4 is a schematic structural view of the first lock lever in a locked state with the joint plate;

FIG. 5 is a schematic structural diagram of the first lock rod in a suspended state;

fig. 6 is a schematic structural view of the first lock rod being disengaged from the U-shaped slot of the joint plate.

Wherein: 1. a bracket set; 11. a first link; 12. a second connecting rod 13, a third connecting rod 131 and a sliding chute; 14. a joint plate; 141. a U-shaped clamping groove; 1411. clamping; 1412. an inner sidewall; 15. a first lock lever; 16. a second elastic member; 17. a handle unit; 171. a second lock lever; 172. a returning groove; 173. a handle; 1731. a pedal; 174. a cam; 18. a first elastic member; 19. a support bar; 21. a brake lever; 22. a brake pad; 3. a seat body; 31. a seat plate; 32. a backrest; 33. a wheel; 34. and a fourth link.

Detailed Description

The invention is further explained below with reference to the drawings:

in the embodiment of the scheme, the front refers to one side of the wheelchair for placing the feet; the back is the backrest side of the wheelchair.

Referring to fig. 1 to 6, a wheelchair having a rocking chair function includes a seat body 3 having a backrest 32 and a seat plate 31, a seat body for supporting the seat body 3, and wheels 33 installed at the bottom of the seat body, the seat body including a bilaterally symmetrical frame set 1, the frame set 1 including a longitudinal first link 11, a second link 12 hinged to a front end of the first link 11, and a third link 13 hinged to a rear end of the first link 11; the support assembly 1 further comprises a joint plate 14, and the other ends of the second connecting rod 12 and the third connecting rod 13 are hinged to the joint plate 14, so that the first connecting rod 11, the second connecting rod 12, the third connecting rod 13 and the joint plate 14 form an unstable quadrilateral structure with four hinge points; the seat body further comprises a locking device arranged between the joint plate 14 and the third connecting rod 13, the locking device comprises a U-shaped clamping groove 141 arranged on the joint plate 14 and a locking rod unit arranged on the third connecting rod 13, the locking rod unit can be limited at least two different positions of the third connecting rod 13, the locking rod unit is respectively clamped at the bottom of the U-shaped clamping groove 141 and suspended in the U-shaped clamping groove 141, and a first elastic piece 18 for buffering relative rotation of the joint plate 14 and the third connecting rod 13 is arranged between the joint plate 14 and the third connecting rod 13; the seat body 3 is mounted on the left and right sets of joint plates 14 of the seat body.

The hinge points among the first connecting rod 11, the second connecting rod 12, the third connecting rod 13 and the joint plate 14 can be directly hinged or indirectly hinged; the first elastic member 18 may be a spring or a high-elastic fiber rope. When the lock rod unit is suspended in the U-shaped slot 141, a certain rotational force is applied to the joint plate 14 of the seat body, that is, the backrest 32 of the seat body 3 is rotated back and forth, so that the third link 13 and the joint plate 14 rotate relatively around the hinge point thereof, and the rotation angle is limited by the space between the two inner side walls 1412 of the U-shaped slot 141, which can be designed according to the swing amplitude of the seat body; further, the first elastic member 18 can provide elastic buffering and resetting functions for shaking, so that the base body can shake comfortably and safely, the comfort of a user is improved, and the shaking user is more labor-saving.

Further, the bottom of the U-shaped slot 141 has a plurality of parallel detents 1411 for limiting the position of the locking rod unit, and a space for the locking rod unit to move back and forth is provided between two inner sidewalls 1412 of the U-shaped slot 141 (see fig. 3). The plurality of clamping positions 1411 are arranged, so that the lock rod unit can be clamped and fixed at different positions of the clamping positions 1411, the seat body 3 matched with the seat body can be kept at different angles, the adjustment can be carried out according to the condition of a user, and the comfort of the user is improved.

Preferably, the third connecting rod 13 has a sliding groove 131 along the length direction, the locking rod unit includes two first locking rods 15, two ends of which are respectively matched with the left and right groups of the sliding grooves 131, the first locking rod 15 is driven to be clamped into the second elastic part 16 at the bottom of the U-shaped clamping groove 141, and the first locking rod 15 is pulled reversely and the first locking rod 15 is suspended in the handle unit 17 in the U-shaped clamping groove 141. The second elastic member 16 may be a spring, a high elastic cord, or the like; the first lock rod 15 slides along the third link 13 under the driving of the second elastic member 16, and when the first lock rod 15 is clamped in the clamping position 1411 at the bottom of the U-shaped clamping groove 141, the third link 13 and the joint plate 14 are fixed and cannot rotate, the bracket set 1 of the seat body becomes a stable triangular structure, and at this time, the seat body is in a normal use state that the seat body cannot shake, that is, a use state of a conventional product in the market. The handle unit 17 is used for overcoming the elastic force of the second elastic member 16 to pull the first lock rod 15 away from the detent 1411 of the U-shaped slot 141, when the handle unit 17 pulls the first lock rod 15 to be suspended but not completely separated from the U-shaped slot 141 (i.e. exceeding the highest point of the sidewall of the U-shaped slot 141), the relative position of the first lock rod 15 and the third link 13 is fixed by the handle, at this time, the first lock rod 15 is in a movable state and can swing between the two inner sidewalls 1412 of the U-shaped slot 141, i.e. the third link 13 and the joint plate 14 are in an unstable hinged state, but the rotation range is limited by the internal width of the U-shaped slot 141, so that the function of the rocking chair can be realized. The handle can be fixed at a set position by a hook or a bolt, and other forms are also possible.

Preferably, the handle unit 17 includes a U-shaped second lock rod 171 with two ends rotatably connected between the left and right two sets of joint plates 14, and a handle 173 having a returning groove 172 and movably limiting the first lock rod 15 and the second lock rod 171 in the returning groove 172, the first lock rod 15 is provided with a cam 174 radially abutting against the second lock rod 171 and having a radius not exceeding the depth of the U-shaped slot 141, when the handle 173 is pressed down, the second lock rod 171 can pass over the vertex of the cam 174 backward and be clamped between the cam 174 and the inner wall of the returning groove 172, and the first lock rod 15 is separated from the bottom of the U-shaped slot 141. When the first lock lever 15 is clamped into the clamping position 1411 of the U-shaped clamping groove 141, that is, when the first lock lever 15 is closest to the bottom surface of the U-shaped clamping groove 141, the second lock lever 171 is positioned at the front side of the cam 174, and because a clearance space is arranged in the return groove 172, no force is applied to the second lock lever 171 by the cam 174; when the handle 173 is pressed down, the cam 174 is used as a fulcrum, the second lock rod 171 can go over the vertex of the cam 174 to reach the rear side of the cam 174 through the action of the lever and is limited between the rear side of the cam 174 and the inner wall of the reverse-type groove 172, at this time, the radius of the cam 174 can enable the second lock rod 171 to be jacked up to a certain height, namely, the joint plate 14 connected with the second lock rod 171 and the third connecting rod 13 fixed relative to the pull handle unit 17 are jacked up to a certain distance, and therefore, the first lock rod 15 is suspended.

Preferably, a transverse support rod 19 is further disposed between the left and right support assemblies 1, and the support rod 19 can limit the pressing position of the handle 173. A support bar 19 is typically provided at the point of articulation of the first link 11 with the third link 13, the ends of which are typically available for mounting the wheels 33 of the seat. The supporting rod 19 limits the handle 173, so as to prevent the second lock rod 171 from moving downwards after passing over the cam 174 due to an excessive rotation angle of the handle 173, and the first lock rod 15 is driven by the second elastic member 16 to return to the detent 1411 of the U-shaped detent 141 to be locked.

Preferably, the handle 173 is provided with a pedal 1731, and by applying a downward pressure to the pedal 1731, the first lock rod 15 and the second lock rod 171 are pulled to move downward at the same time (when the first lock rod 15 is in a suspended state, the second lock rod 171 is inclined backward at a certain angle (refer to fig. 5)), and when the pedal 1731 is pulled downward, the second lock rod 171 is pulled to be parallel to the third link 13 (refer to fig. 6), so that the first lock rod 15 can be separated from the U-shaped slot 141. After the first locking bar 15 is completely separated from the U-shaped slot 141 by the pressure applied to the pedal 1731, the seat body can be folded by the unstable quadrilateral structure formed by the first connecting bar 11, the second connecting bar 12, the third connecting bar 13 and the joint plate 14. Is convenient for storage or carrying.

Further, the third link 13 has a damper spring structure therein. The shock absorbing spring can further improve the riding comfort.

Furthermore, the seat body is hinged with brake pads of brake levers 21 and L, the brake levers 21 and the brake pads form a lever structure, so that when the brake levers 21 are pulled up and down, the brake pads are abutted against or separated from the wheels 33, the brake levers 21 and the brake pads can be integrated, the pivot points are hinged points with the seat body, a plurality of connecting rod linkage structures are also available, and when the multi-connecting rod linkage structure is adopted, the impact force during braking can be relieved.

Further, the front ends of the two sides of the seat plate 31 are hinged with a fourth connecting rod 34, and the other end of the fourth connecting rod 34 is hinged with the front end of the first connecting rod 11. The first connecting rod 11, the third connecting rod 13, the fourth connecting rod 34, the joint plate 14 and the seat body 3 are all provided with movable hinge points, so that the wheelchair can be folded.

The above description is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A wheelchair having a rocking chair function, comprising a seat body having a backrest and a seat plate, and a seat body for supporting the seat body, characterized in that: the seat body comprises support groups which are bilaterally symmetrical, each support group comprises a longitudinal first connecting rod, a second connecting rod hinged to the front end of the corresponding first connecting rod and a third connecting rod hinged to the rear end of the corresponding first connecting rod; the support group also comprises a joint plate, and the other ends of the second connecting rod and the third connecting rod are hinged with the joint plate, so that the first connecting rod, the second connecting rod, the third connecting rod and the joint plate form an unstable quadrilateral structure with four hinge points; the seat body also comprises a locking device arranged between the joint plate and the third connecting rod, the locking device comprises a U-shaped clamping groove arranged on the joint plate and a locking rod unit arranged on the third connecting rod, the locking rod unit can be limited at least two different positions of the third connecting rod, the locking rod unit is respectively clamped at the bottom of the U-shaped clamping groove and suspended in the U-shaped clamping groove, and a first elastic piece for buffering the relative rotation of the joint plate and the third connecting rod is arranged between the joint plate and the third connecting rod; the seat body is arranged on the left and right groups of joint plates of the seat body.

2. A wheelchair as claimed in claim 1, which has a rocking chair function, wherein: the bottom of the U-shaped clamping groove is provided with a plurality of clamping positions which are parallel and limit the locking rod unit, and a space for the locking rod unit to move back and forth is arranged between the two inner side walls of the U-shaped clamping groove.

3. A wheelchair as claimed in claim 1, which has a rocking chair function, wherein: the third connecting rod is provided with a sliding groove along the length direction, the locking rod unit comprises a first locking rod, a second elastic piece and a handle unit, two ends of the first locking rod are respectively matched with the left group of locking rods and the right group of locking rods in the sliding grooves, the first locking rod is driven to be clamped into the bottom of the U-shaped clamping groove, and the handle unit reversely pulls the first locking rod and enables the first locking rod to be suspended in the U-shaped clamping groove.

4. A wheelchair as claimed in claim 3, which has a rocking chair function, wherein: the handle unit includes that both ends rotate to be connected in controlling two sets of the second locking lever of the U type between the joint plate, have return type groove and will first locking lever and second locking lever are spacing in the handle of returning the type groove movably, have radial butt second locking lever and radius on the first locking lever and do not exceed the cam of U type draw-in groove degree of depth, when the handle pushed down, can make the second locking lever pass the cam summit backward and the card is arranged in between cam and the return type inslot wall, makes first locking lever break away from simultaneously the bottom of U type draw-in groove.

5. A wheelchair as claimed in claim 4, which has a rocking chair function, wherein: and a transverse supporting rod is arranged between the left bracket group and the right bracket group, and the supporting rod can limit the pressing position of the handle.

6. A wheelchair as claimed in claim 4, which has a rocking chair function, wherein: the handle is provided with a pedal, and the first lock rod can be separated from the U-shaped clamping groove by applying downward pressure to the pedal.

7. A wheelchair as claimed in claim 1, which has a rocking chair function, wherein: and a damping spring structure is arranged in the third connecting rod.

8. The wheelchair as claimed in claim 1, wherein wheels are mounted on the bottom of the base, a brake rod and an L-shaped brake pad are hinged to the base, and the brake rod and the brake pad form a lever structure, so that when the brake rod is pulled up and down, the brake pad abuts against or leaves the wheels.

9. A wheelchair as claimed in claim 1, which has a rocking chair function, wherein: the front ends of the two sides of the seat board are hinged with fourth connecting rods, and the other ends of the fourth connecting rods are hinged with the front end of the first connecting rod.