Detachable turnover mechanism handrail

Abstract

The utility model discloses a detachable turnover mechanism armrest which comprises an armrest body and a positioning block arranged on the back side of a wheelchair backrest frame, a horizontally-arranged circular shaft is arranged on the positioning block, a disc-shaped mounting seat is arranged at the tail end of the armrest body, a through hole for the circular shaft to penetrate through is formed in the mounting seat, and the circular shaft is arranged in the through hole. A limiting cap is installed at the end of the circular shaft, a plurality of positioning holes are annularly distributed in the installation base with the through hole as the circle center, spring cotters inserted into the positioning holes are arranged on the limiting cap, and a stopping block for stopping the installation base is arranged on the circular shaft. When the armrest main body is overturned, the spring cotter is inserted into the positioning hole, so that the armrest main body is positioned, putting down and overturning of the armrest can be determined according to needs, and the armrest is positioned through the spring cotter and is easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field related to wheelchairs, in particular to a detachable and flippable armrest. Background Art

[0002] At present, most wheelchairs have armrest mounting seats on both sides of the wheelchair frame. Generally, the armrest mounting seats are directly welded to the wheelchair frame and cannot be moved or disassembled, causing inconvenience to wheelchair users. There are also flippable armrests, but it is inconvenient to disassemble and flip the armrests, so the armrests are easy to fall back after flipping, causing a lot of inconvenience during use. Utility Model Content

[0003] In order to solve the defect that the prior art also has a reversible armrest, but it is inconvenient to disassemble and flip the armrest, so that the armrest is easy to fall back after flipping, causing many inconveniences during use, the utility model provides a detachable and reversible armrest.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a detachable and flippable armrest, comprising an armrest body and a positioning block arranged on the back side of a wheelchair backrest frame, wherein the positioning block is provided with a horizontally arranged circular shaft, the end of the armrest body is provided with a disc-shaped mounting seat, the mounting seat is provided with a through hole for the circular shaft to pass through, the end of the circular shaft is provided with a mounting limiting cap, the mounting seat has a plurality of positioning holes distributed in a ring shape with the through hole as the center of the circle, the limiting cap is provided with a spring latch inserted into the positioning hole, and the circular shaft is provided with a blocking block for blocking the mounting seat.

[0006] As a preferred technical solution of the utility model, the spring latch includes a limiting tube arranged on the limiting cap, and a latch body moving along the limiting tube is arranged inside the limiting tube, and sealing caps are arranged at both ends of the limiting tube, and both ends of the latch body pass through the sealing caps, and a moving block moving with the inner cavity of the limiting tube is arranged on the latch body, and a clamping spring is arranged on the side of the moving block away from the mounting seat, and the clamping spring is arranged between the moving block and the cover cap.

[0007] As a preferred technical solution of the utility model, a pull-out portion extending vertically downward is provided at the end of the latch body.

[0008] As a preferred technical solution of the utility model, an eccentrically arranged positioning bolt is installed between the limiting cap and the round shaft, and a rotating handle is provided at the outer end of the positioning bolt.

[0009] As a preferred technical solution of the utility model, there are no less than 12 positioning holes, which are evenly distributed on the outside of the through hole.

[0010] As a preferred technical solution of the utility model, a pair of limit blocks are provided on the blocking block, and a flip block moving within the two limit blocks is provided at the end of the mounting seat, so that the armrest body can be flipped within a range of ninety degrees.

[0011] The beneficial effects of the utility model are:

[0012] 1. In the detachable and reversible armrest, a positioning block is arranged on the back side of the wheelchair backrest frame, and a horizontally arranged circular shaft is arranged on the positioning block, so that the part of the backrest that contacts the human body is relatively flat and will not hit the person. A plurality of positioning holes are arranged in a ring shape with the through hole as the center of the mounting seat, and a spring latch inserted into the positioning hole is arranged on the limiting cap. When the armrest body is turned over, the spring latch is inserted into the positioning hole, so that the armrest body is positioned, and the lowering and turning of the armrest can be determined according to needs. The positioning is performed by the spring latch, which has the characteristic of easy operation.

[0013] 2. An eccentrically arranged positioning bolt is installed between the limiting cap and the circular shaft in the detachable and flippable armrest, and a rotating handle is provided at the outer end of the positioning bolt, which is convenient for disassembly. The eccentric positioning bolt effectively prevents the limiting cap from rotating and falling off.

[0014] 2. This type of detachable and flip armrest is provided with a pair of limit blocks on the blocking block, and a flip block that moves within the two limit blocks is provided at the end of the mounting seat. In this way, by using a pair of limit blocks in conjunction with the flip block, the armrest body can be flipped within a range of ninety degrees to limit the rotation angle of the armrest, thereby facilitating the lowering and flipping of the armrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a structural schematic diagram of a detachable and reversible armrest of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a spring latch of a detachable and flippable armrest of the utility model;

[0018] Figure 3 It is a schematic diagram of the cooperation between the limit block and the flip stopper of a detachable and flip mechanism armrest of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the arrangement of a flip stopper of a detachable and flippable armrest.

[0020] In the figure: 1. armrest body; 2. wheelchair backrest frame; 3. positioning block; 4. round shaft; 5. mounting seat; 6. through hole; 7. limiting cap; 8. positioning hole; 9. spring latch; 10. limiting tube; 11. latch body; 12. sealing cap; 13. moving block; 14. compression spring; 15. pulling part; 16. rotating handle; 17. blocking block; 18. limiting block; 19. flipping block; 20. positioning bolt. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example: Figure 1-4 As shown, the utility model is a detachable and flippable armrest, comprising an armrest body 1 and a positioning block 3 arranged on the back side of a wheelchair backrest frame 2, and the positioning block 3 is provided with a horizontally arranged circular shaft 4, a disc-shaped mounting seat 5 is provided at the end of the armrest body 1, a through hole 6 for the circular shaft 4 to pass through is provided on the mounting seat 5, a limiting cap 7 is installed at the end of the circular shaft 4, the mounting seat 5 has a plurality of positioning holes 8 distributed in a ring shape with the through hole as the center, the limiting cap 7 is provided with a spring pin 9 inserted into the positioning hole 9, and a blocking block 17 for blocking the mounting seat is provided on the circular shaft 4. A positioning block is arranged on the back side of the wheelchair backrest frame 2, and a horizontally arranged circular shaft 4 is arranged on the positioning block 3, so that the portion of the backrest that contacts the human body is relatively flat and will not hit the person, wherein a plurality of positioning holes 8 are distributed in a ring shape with the through hole as the center of the circle on the mounting seat 5, and a spring latch 9 is arranged on the limiting cap 7 to be inserted into the positioning hole 9, so that when the armrest body is turned over, the spring latch is inserted into the positioning hole, so that the armrest body is positioned, and the lowering and turning of the armrest can be determined according to needs, wherein the positioning is performed by the spring latch, and it has the characteristic of easy operation.

[0023] The spring latch 9 includes a limiting tube 10 arranged on the limiting cap 7, and a latch body 11 moving along the limiting tube 10 is arranged in the limiting tube 10, and sealing caps 12 are arranged at both ends of the limiting tube 11, and both ends of the latch body 11 pass through the sealing caps 12, and a moving block 13 moving with the inner cavity of the limiting tube 10 is arranged on the latch body 11, and the moving block 13 is provided with a clamping spring 14 on the side away from the mounting seat 5, and the clamping spring 14 is arranged between the moving block 13 and the cap 12, so that when the armrest body is flipped, the spring latch is inserted into the positioning hole, so that the armrest body is positioned, and the lowering and flipping of the armrest can be determined according to needs, wherein the positioning is performed by the spring latch, which has the characteristic of easy operation.

[0024] A vertically downward pulling portion 15 is provided at the end of the latch body 11 for easy operation.

[0025] An eccentrically arranged positioning bolt is installed between the limiting cap and the circular shaft 4, and a rotating handle 16 is provided at the outer end of the positioning bolt, which is convenient for disassembly, wherein the eccentric positioning bolt effectively prevents the limiting cap from rotating and falling off.

[0026] There are no less than 12 positioning holes 8 , which are evenly distributed on the outside of the through hole.

[0027] A pair of limit blocks 18 are provided on the blocking block 17, and a flip block 19 is provided at the end of the mounting seat 5, which moves within the two limit blocks 18, so that the armrest body 1 can be flipped within a range of 90 degrees. In this way, by using a pair of limit blocks 18 and the flip block 19 in cooperation, the armrest body 1 can be flipped within a range of 90 degrees, so as to limit the rotation angle of the armrest, and facilitate the lowering and flipping of the armrest.

[0028] When working, this kind of detachable and flippable armrest is provided with a positioning block on the back side of the wheelchair backrest frame 2, and a horizontally arranged circular shaft 4 is provided on the positioning block 3, so that the part of the backrest that fits the human body is relatively flat and will not hit the person, wherein a plurality of positioning holes 8 are distributed in a ring shape with the through hole as the center of the circle on the mounting seat 5, and a spring latch 9 is provided on the limiting cap 7 to be inserted into the positioning hole 9, so that when the armrest body is flipped, the spring latch is inserted into the positioning hole, so that the armrest body is positioned, and the lowering and flipping of the armrest can be determined according to needs, wherein the positioning is performed by the spring latch, which has the characteristic of easy operation, and through the cooperation of a pair of limiting blocks 18 and a flipping stopper 19, the armrest body 1 is flipped within a range of ninety degrees to limit the rotation angle of the armrest, thereby facilitating the lowering and flipping of the armrest.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A detachable and reversible armrest, characterized in that: The invention comprises an armrest body (1) and a positioning block (3) arranged on the back side of a wheelchair backrest frame (2), wherein the positioning block (3) is provided with a horizontally arranged circular shaft (4), a disc-shaped mounting seat (5) is provided at the end of the armrest body (1), the mounting seat (5) is provided with a through hole (6) for the circular shaft (4) to pass through, a mounting limit cap (7) is provided at the end of the circular shaft (4), the mounting seat (5) has a plurality of positioning holes (8) distributed in a ring shape with the through hole as the center, the limiting cap (7) is provided with a spring latch (9) inserted into the positioning hole (8), and a blocking block (17) is provided on the circular shaft (4) for blocking the mounting seat.

2. The detachable and reversible armrest according to claim 1, characterized in that: The spring latch (9) comprises a limiting tube (10) arranged on a limiting cap (7), and a latch body (11) is arranged inside the limiting tube (10) and moves along the limiting tube (10), and sealing caps (12) are arranged at both ends of the limiting tube (10), and both ends of the latch body (11) pass through the sealing caps (12), and a moving block (13) is arranged on the latch body (11) and moves with the inner cavity of the limiting tube (10), and the moving block (13) is provided with a clamping spring (14) on the side away from the mounting seat (5), and the clamping spring (14) is arranged between the moving block (13) and the sealing cap (12).

3. The detachable and reversible armrest according to claim 2, characterized in that: A vertically downward drawing portion (15) is provided at the end of the latch body (11).

4. The detachable and reversible armrest according to claim 1, characterized in that: An eccentrically arranged positioning bolt (20) is installed between the limiting cap (7) and the circular shaft (4), and a rotating handle (16) is provided at the outer end of the positioning bolt.

5. The detachable and reversible armrest according to claim 1, characterized in that: The number of the positioning holes (8) is no less than 12 and they are evenly distributed on the outside of the through hole.

6. The detachable and reversible armrest according to claim 5, characterized in that: A pair of limit blocks (18) are provided on the blocking block (17), and a flip block (19) movable within the two limit blocks (18) is provided at the end of the mounting seat (5), so that the armrest body (1) flips within a range of ninety degrees.

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