Armrest of multifunctional electric wheelchair

Abstract

The utility model provides an armrest of a multifunctional electric wheelchair, and belongs to the technical field of wheelchairs. The problems that an existing walking stick and an existing wheelchair are independently arranged, and integrity is not high are solved. According to the armrest of the multifunctional electric wheelchair, the armrest is in a flat runway shape and comprises a J-shaped supporting rod and a J-shaped walking stick, a first clamping head is arranged at the end of an arc-shaped section of the supporting rod, a second clamping head is arranged at the end of a straight section of the walking stick, and the supporting rod and the walking stick can be axially positioned after the first clamping head and the second clamping head are connected in an inserted mode and rotate relatively. The end of the straight section of the supporting rod is fixedly connected with a first permanent magnet, the end of the arc section of the walking stick is fixedly connected with a second permanent magnet, and the supporting rod and the walking stick can be circumferentially positioned after opposite poles of the first permanent magnet and the second permanent magnet attract each other. The armrest of the multifunctional electric wheelchair has the advantages that the walking stick is integrated into the armrest, and the walking stick is convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wheelchair, and relates to a handrail of multifunctional electric wheelchair. BACKGROUND

[0002] The existing electric wheelchair, for example, Chinese patent document discloses a wheelchair crutch drawing device [patent number: 201921234025.2; application publication number: CN210749892U], which comprises a chair frame and a wheel, the chair frame is rotatably connected with the wheel on both sides, the wheel is arranged with a crutch on one side, the crutch is arranged with a fixed sleeve at the bottom, the fixed sleeve is arranged with a receiving groove inside, the receiving groove is fixedly connected with a telescopic spring inside, the telescopic spring is fixedly connected with a sliding block at the top, a fixed sleeve is connected with a No. The fixed pin is arranged with a reset spring at one end, the reset spring is arranged with a limit plate at one end, the other end of the No. The fixed pin is fixedly connected with a traction wire on the side wall, the other end of the traction wire is fixedly connected with a sliding column, the sliding column is slidably connected with a positioning plate outside, and the bottom end of the No. The inside of the fixed pin is arranged with a pulley.

[0003] The wheelchair crutch drawing device with the above structure is equivalent to adding a positioning sleeve and a fixed sleeve to the wheelchair, and then placing the crutch through the positioning sleeve and the fixed sleeve, that is, the crutch is still a crutch, and the crutch and the wheelchair are independently arranged, so that the overall strength is not strong. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problems existing in the prior art, and provides a handrail of multifunctional electric wheelchair, which solves the technical problem of how to integrate the crutch into the handrail and makes the crutch convenient to disassemble and assemble.

[0005] The utility model discloses a handrail of multifunctional electric wheelchair, which is characterized in that the handrail is in the shape of a flat runway, and comprises a J-shaped support rod and a J-shaped crutch.

[0006] The handrail has two functions: firstly, when a user sits on the wheelchair, the user's hands can be placed on the handrail to provide support; secondly, after the user gets off the wheelchair, the user can detach the walking stick from the handrail, so that the walking stick can be used to support the user's body when the user walks. When the walking stick is detached, only a certain external force needs to be applied to overcome the magnetic force of mutual attraction between the first permanent magnet and the second permanent magnet to rotate the walking stick to a certain angle, so that the first clamping joint and the second clamping joint are no longer axially positioned, and then the walking stick can be pulled out; when the walking stick is installed, the first clamping joint and the second clamping joint are inserted into each other and relatively rotated by a certain angle to axially position the support rod and the walking stick, and the first permanent magnet and the second permanent magnet are attracted to each other to circumferentially position the support rod and the walking stick, so that the walking stick is integrated into the handrail. The walking stick is part of the structure of the handrail, which is ingenious and convenient to detach and install.

[0007] In the multifunctional electric wheelchair, the first clamping joint comprises a first clamping groove recessed on an end face of the arc-shaped segment of the support rod and in a ring shape, and a plurality of first clamping pieces arranged at intervals in the first clamping groove, and gaps are formed between the first clamping pieces and the groove bottom and groove wall of the first clamping groove, the second clamping joint comprises a second clamping groove recessed on an end face of the straight segment of the walking stick and in a circular shape, and a plurality of second clamping pieces arranged at equal intervals on the groove wall of the second clamping groove, and a gap is formed between the second clamping pieces and the groove bottom of the second clamping groove, and there is a clearance between the inner ends of all the second clamping pieces, the first clamping piece can be embedded between two adjacent second clamping pieces, and the second clamping piece can be embedded between two adjacent first clamping pieces. The first clamping piece and the second clamping piece are first inserted in a staggered manner, and then rotated to overlap the first clamping piece and the second clamping piece, and when detached, the first clamping piece and the second clamping piece are rotated in the opposite direction, so that the support rod and the walking stick are axially positioned, which is convenient.

[0008] In the multifunctional electric wheelchair, the first clamping piece is in a fan shape, and the width of the inner end of the first clamping piece is smaller than the width of the outer end of the first clamping piece. This structure allows the first clamping joint and the second clamping joint to rotate relative to each other.

[0009] In the multifunctional electric wheelchair, the second clamping piece is in an arc shape. This structure matches the first clamping groove in a ring shape and the second clamping groove in a circular shape, so that the first clamping joint and the second clamping joint can rotate relative to each other.

[0010] In the multifunctional electric wheelchair, the second clamping joint is recessed in a circumferential direction, and the second clamping joint is embedded in the first clamping groove. The first clamping joint and the second clamping joint can be completely hidden, so that the walking stick can be better integrated into the handrail.

[0011] In the multifunctional electric wheelchair, the outer peripheral wall of the second clamping joint is in clearance fit with the slot wall of the first clamping slot.

[0012] In the multifunctional electric wheelchair, the support rod and the crutch are both metal pipes, and the cross sections of the support rod and the crutch are both circular. The circular cross section makes the user hold comfortably and improves the comfort.

[0013] In the multifunctional electric wheelchair, the electric wheelchair comprises a back plate, the support rod is connected with the back plate, the support rod is located above the crutch, the arc-shaped section of the support rod is arranged adjacent to the back plate, and the arc-shaped section of the crutch is arranged away from the back plate. The arc-shaped section of the crutch is located at the front end of the wheelchair, and the crutch is convenient to take and place.

[0014] Compared with the prior art, the multifunctional electric wheelchair has the following advantages:

[0015] 1. The handrail comprises a support rod in J shape and a crutch in J shape, the crutch can be pulled out of the support rod, the crutch is a part of the structure of the handrail, is combined ingeniously, and makes the crutch convenient to disassemble and assemble.

[0016] 2. The handrail has two functions, one is that when a user sits on the wheelchair, the user's hand can be placed on the handrail to support, and the other is that after the user gets off the wheelchair, the user can disassemble the crutch from the handrail, so that the user can use the crutch to support the body when walking. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the overall structure of the electric wheelchair.

[0018] Figure 2 is a schematic view of the overall structure of the handrail and an enlarged view of the first clamping joint.

[0019] Figure 3 is a schematic view of the overall structure of the handrail and an enlarged view of the second clamping joint.

[0020] In the drawings, 1 is a handrail, 2 is a support rod, 3 is a crutch, 4 is a first clamping joint, 41 is a first clamping slot, 42 is a first clamping piece, 5 is a second clamping joint, 51 is a second clamping slot, 52 is a second clamping piece, 53 is a avoiding space, 6 is a first permanent magnet, 7 is a second permanent magnet, and 8 is a back plate. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0022] For example, Figure 1As shown in the drawings, the multifunctional electric wheelchair comprises an armrest 1 and a back plate 8. The armrest 1 is in the shape of a flat runway, and comprises a J-shaped support rod 2 and a J-shaped crutch 3, both of which are metal tubes and have a circular cross section. The support rod 2 is connected to the back plate 8 and is located above the crutch 3, with the curved section of the support rod 2 being adjacent to the back plate 8 and the curved section of the crutch 3 being away from the back plate 8.

[0023] As shown in the drawings, Figure 2 , Figure 3 The end of the curved section of the support rod 2 is provided with a first clamping head 4, which comprises a first clamping groove 41 in the shape of a ring recessed in the end face of the curved section of the support rod 2 and three first clamping pieces 42 in the shape of a sector arranged at intervals in the first clamping groove 41, with the width of the inner end of the first clamping piece 42 being smaller than the width of the outer end of the first clamping piece 42, and gaps being present between the first clamping piece 42 and the groove bottom and groove wall of the first clamping groove 41. The end of the straight section of the crutch 3 is provided with a second clamping head 5, which comprises a second clamping groove 51 in the shape of a circle recessed in the end face of the straight section of the crutch 3 and three second clamping pieces 52 in the shape of an arc arranged at equal intervals on the groove wall of the second clamping groove 51, with gaps being present between the second clamping piece 52 and the groove bottom of the second clamping groove 51 and between the inner ends of all the second clamping pieces 52, and an avoiding space 53 being present between the inner ends of all the second clamping pieces 52. The first clamping piece 42 can be embedded between two adjacent second clamping pieces 52, and the second clamping piece 52 can be embedded between two adjacent first clamping pieces 42.

[0024] The second clamping head 5 is arranged in a circumferential direction, and during installation, the first clamping piece 42 and the second clamping piece 52 are arranged in a staggered manner, the second clamping head 5 is embedded in the first clamping groove 41, the outer circumferential wall of the second clamping head 5 is in gap cooperation with the groove wall of the first clamping groove 41, the first clamping head 4 and the second clamping head 5 are relatively rotated, the first clamping piece 42 and the second clamping piece 52 are overlapped with each other, the support rod 2 and the crutch 3 are axially positioned, the end of the straight section of the support rod 2 is fixedly connected with a first permanent magnet 6, the end of the curved section of the crutch 3 is fixedly connected with a second permanent magnet 7, and the first permanent magnet 6 and the second permanent magnet 7 are attracted to each other in a repelling manner to circumferentially position the support rod 2 and the crutch 3. During disassembly, only a certain external force is needed to overcome the magnetic force of mutual attraction between the first permanent magnet 6 and the second permanent magnet 7 to rotate the crutch 3 to a certain angle, so that the first clamping head 4 and the second clamping head 5 are no longer axially positioned, and then the crutch 3 can be pulled out.

[0025] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0026] Although the terms handrail 1, support rod 2, walking stick 3, first clamping head 4, first clamping groove 41, first clamping piece 42, second clamping head 5, second clamping groove 51, second clamping piece 52, avoiding space 53, first permanent magnet 6, second permanent magnet 7, back plate 8 are used more in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; it is contrary to the spirit of the utility model to interpret them as any kind of additional limitation.

Claims

1. A multifunctional electric wheelchair armrest, characterized in that, The handrail (1) is flat and runway-shaped, comprising a J-shaped support rod (2) and a J-shaped crutch (3), the end of the arc-shaped section of the support rod (2) is provided with a first clamping joint (4), the end of the straight section of the crutch (3) is provided with a second clamping joint (5), the first clamping joint (4) and the second clamping joint (5) are inserted into each other and rotated relative to each other to axially position the support rod (2) and the crutch (3), the end of the straight section of the support rod (2) is fixedly connected with a first permanent magnet (6), the end of the arc-shaped section of the crutch (3) is fixedly connected with a second permanent magnet (7), the first permanent magnet (6) and the second permanent magnet (7) are attracted to each other to circumferentially position the support rod (2) and the crutch (3).

2. A multifunctional electric wheelchair armrest according to claim 1, characterized in that, The first clamping joint (4) comprises a first clamping groove (41) which is annular and recessed at the end face of the arc-shaped section of the support rod (2), and a plurality of first clamping pieces (42) which are spaced apart in the first clamping groove (41), the first clamping piece (42) has a gap between the groove bottom and the groove wall of the first clamping groove (41), the second clamping joint (5) comprises a second clamping groove (51) which is circular and recessed at the end face of the straight section of the crutch (3), and a plurality of second clamping pieces (52) which are equally spaced on the groove wall of the second clamping groove (51), the second clamping piece (52) has a gap between the groove bottom and the groove wall of the second clamping groove (51), and all the inner ends of the second clamping pieces (52) have a clearance space (53), the first clamping piece (42) can be embedded between two adjacent second clamping pieces (52), and the second clamping piece (52) can be embedded between two adjacent first clamping pieces (42).

3. A multifunctional electric wheelchair armrest according to claim 2, characterized in that, The first clamping piece (42) is fan-shaped, the width of the inner end of the first clamping piece (42) is smaller than the width of the outer end of the first clamping piece (42).

4. A multifunctional electric wheelchair armrest according to claim 2 or 3, characterized in that The second clamping piece (52) is arc-shaped.

5. A multifunctional electric wheelchair armrest according to claim 2 or 3, characterized in that The second clamping joint (5) is embedded in the first clamping groove (41).

6. The armrest of a multi-functional electric wheelchair according to claim 2 or 3, wherein The outer peripheral wall of the second clamping joint (5) is in gap fit with the groove wall of the first clamping groove (41).

7. The armrest of a multi-functional electric wheelchair according to claim 1 or 2 or 3, wherein The support rod (2) and the crutch (3) are both metal pipes, and the cross sections of the support rod (2) and the crutch (3) are both circular.

8. The armrest of a multi-functional electric wheelchair according to claim 1 or 2 or 3, wherein, The electric wheelchair comprises a back plate (8), the support rod (2) is connected with the back plate (8), the support rod (2) is located above the crutch (3), the arc-shaped section of the support rod (2) is arranged adjacent to the back plate (8), and the arc-shaped section of the crutch (3) is arranged away from the back plate (8).

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