Detachable armrest mechanism and wheelchair

Abstract

The utility model provides a detachable armrest mechanism and a wheelchair, the detachable armrest mechanism comprises an armrest frame, a first connecting piece, a second connecting piece, a connecting frame, a locking assembly and an armrest body, the first connecting piece is arranged on the armrest frame, and the first connecting piece is provided with a first limiting hole; the second connecting piece is rotationally connected to the armrest frame; one end of the connecting frame is detachably connected to the first connecting piece, and the other end of the connecting frame is connected to the second connecting piece; the locking assembly is arranged on the connecting frame and comprises a locking elastic piece and a locking column, and the locking elastic piece is connected with the locking column so as to drive the locking column to be inserted into the first limiting hole; the armrest body is arranged on the connecting frame. The wheelchair comprises a seat cushion, a back cushion, pushing handles, moving wheels and the detachable armrest mechanisms, the number of the detachable armrest mechanisms is two, and the seat cushion is arranged between the two detachable armrest mechanisms. The detachable armrest mechanism and the wheelchair are more convenient to use.

Description

Technical Field

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

[0002] Wheelchairs are important auxiliary tools for injured people, disabled people and other people with limited mobility to recover at home and go out for activities. In order to ensure the safety and riding comfort of the wheelchair during travel, most wheelchairs are equipped with armrests on both sides. The existing armrest structures are roughly divided into fixed and detachable types. Among them, the fixed armrest is the most original design. Due to its fixed and non-detachable characteristics, it will block the lateral entry and exit channel of the wheelchair, which is inconvenient to use; although the detachable type can be disassembled to open the lateral entry and exit channel of the wheelchair, the existing detachable armrest has a complicated disassembly and assembly process, which makes it difficult for users to operate alone and inconvenient to use. Utility Model Content

[0003] The utility model aims to provide a detachable armrest mechanism and a wheelchair, aiming to solve the problem that the existing wheelchairs have armrests that are difficult to assemble and disassemble, resulting in inconvenience in use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] In a first aspect, a detachable armrest mechanism is provided, comprising:

[0006] Handrails;

[0007] A first connecting member, the first connecting member is arranged on the handrail frame, and the first connecting member is provided with a first limiting hole;

[0008] a second connecting member, the second connecting member being rotatably connected to the handrail frame;

[0009] A connecting frame, one end of which is detachably connected to the first connecting member, and the other end of which is connected to the second connecting member;

[0010] A locking assembly, the locking assembly is arranged on the connecting frame, the locking assembly comprises a locking elastic member and a locking column, the locking elastic member is connected to the locking column to drive the locking column to be inserted into the first limiting hole;

[0011] An armrest body is arranged on the connecting frame.

[0012] Optionally, the connecting frame is detachably connected to the second connecting member via the locking assembly, and the second connecting member is provided with a second limiting hole adapted to the locking column.

[0013] Optionally, the locking assembly also includes a pushing column, the locking elastic member is a spring sheet, the spring sheet has a fixed portion and a movable portion, a locking channel is provided at the end of the connecting frame, and a locking hole and a pushing hole connected to the locking channel are provided on the outer wall of the end of the connecting frame, the fixed portion abuts against the inner wall of the locking channel, the locking column and the pushing column are both connected to the movable portion, and the movable portion is used to drive the locking column and the pushing column to pass through the locking hole and the pushing hole respectively.

[0014] Optionally, the locking assembly further includes a pressing plate, the pressing plate is rotatably connected to the connecting frame, and the pushing column abuts against the pressing plate.

[0015] Optionally, the second connecting member has a rotation-stopping portion, and the armrest frame is provided with a limiting portion cooperating with the rotation-stopping portion, and the limiting portion is used to limit the rotation angle of the second connecting member.

[0016] Optionally, the limiting portion has an arc-shaped limiting groove.

[0017] Optionally, the second connecting member has a cylindrical shape, and the anti-rotation portion protrudes from the second connecting member in a radial direction of the second connecting member.

[0018] Optionally, the first connecting member is provided with a first plugging hole for the connecting frame to be plugged in, and a fastener is provided at one end of the connecting frame plugged in the first connecting member. The fastener is made of plastic and has a conical shape. The bottom of the first plugging hole is provided with a conical groove that matches the fastener.

[0019] In a second aspect, a wheelchair is provided, comprising a seat cushion, a back cushion, a push handle, movable wheels and the above-mentioned detachable armrest mechanism, wherein the number of the detachable armrest mechanisms is two, the seat cushion is arranged between the two detachable armrest mechanisms, the back cushion is arranged between the two detachable armrest mechanisms, the push handle is arranged on the upper side of the armrest frame 1, and the movable wheels are arranged on the lower side of the armrest frame 1.

[0020] Optionally, the wheelchair further comprises a folding frame, wherein the folding frame is arranged below the seat cushion, and two ends of the folding frame are respectively connected to the two detachable armrest mechanisms.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. In the detachable armrest mechanism provided by the utility model, the armrest body is installed on the connecting frame, and then the connecting frame is installed on the armrest frame by using the first connecting member and the second connecting member. In the normal state, the connecting frame can be installed on the first connecting member by using the locking assembly, so that the entire connecting frame can be firmly installed on the armrest frame, and can provide a stable supporting effect when in use. When the user needs to leave the wheelchair from the side, the locking assembly can be used to separate one end of the connecting frame from the first connecting member, and then the connecting frame is rotated around the connection between the second connecting member and the armrest frame to make the connecting frame leave the side passage. The user can leave the wheelchair from the side, which is very convenient to use. The locking assembly is used to disassemble and fix the connecting frame, which is simpler to operate. The user can complete the operation alone, which is more convenient to use.

[0023] 2. In the wheelchair provided by the utility model, the above-mentioned detachable armrest mechanism is adopted. The user can use the locking assembly to disengage one end of the connecting frame from the first connecting piece, and transform the armrest body from the supporting state (blocking the lateral entry and exit channel of the wheelchair) and the folded state (opening the lateral entry and exit channel of the wheelchair) by rotating the connecting frame. In this way, the safety and riding comfort of the wheelchair during movement, as well as the convenience of opening and closing the lateral channel of the wheelchair during non-movement can be taken into account. The user can complete the operation alone, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a structural schematic diagram of the detachable armrest mechanism and the wheelchair of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the detachable armrest mechanism and the wheelchair of the utility model from another angle;

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0028] Figure 4 It is a structural schematic diagram of the detachable armrest mechanism of the utility model;

[0029] Figure 5 It is a schematic diagram of the connection structure of the connecting frame, the first connecting member and the locking assembly of the utility model.

[0030] In the figure: 1. armrest frame; 110. limiting part; 2. first connecting member; 21. first limiting hole; 22. first plug-in hole; 3. second connecting member; 31. second limiting hole; 32. second plug-in hole; 33. anti-rotation part; 4. connecting frame; 41. fastener; 5. locking assembly; 51. locking elastic member; 511. fixing part; 512. movable part; 52. locking column; 53. pushing column; 54. pressing plate; 6. armrest body; 7. baffle; 8. seat cushion; 9. back cushion; 10. push handle; 11. moving wheel; 12. folding frame. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0034] Combine the following Figures 1 to 5 The utility model describes a detachable armrest mechanism and a wheelchair.

[0035] like Figures 1 to 5 As shown, the utility model provides a detachable armrest mechanism, including an armrest frame 1, a first connecting member 2, a second connecting member 3, a connecting frame 4, a locking assembly 5 and an armrest body 6.

[0036] For the convenience of explanation, in this embodiment, each direction is as follows Figure 1 shown.

[0037] Among them, the first connecting member 2 is arranged on the armrest frame 1, and the first connecting member 2 is provided with a first limiting hole 21 and a first plugging hole 22, the first limiting hole 21 is open to the front side, and the first plugging hole 22 is open to the upper side, and the second connecting member 3 is rotatably connected to the armrest frame 1, and the second connecting member 3 is arranged on the rear side of the first connecting member 2.

[0038] Furthermore, the armrest body 6 is arranged on the upper side of the connecting frame 4, one end of the connecting frame 4 is detachably connected to the first connecting member 2, and the other end of the connecting frame 4 is connected to the second connecting member 3. Specifically, the connecting frame 4 is a curved tubular shape, the front end of the connecting frame 4 is detachably connected to the first connecting member 2, and the rear end of the connecting frame 4 is connected to the second connecting member 3.

[0039] Furthermore, the locking assembly 5 is arranged on the connecting frame 4, and the locking assembly 5 includes a locking elastic member 51 and a locking column 52. The locking elastic member 51 is connected to the locking column 52 to drive the locking column 52 to be inserted into the first limiting hole 21. Specifically, the locking assembly 5 is arranged at the front end of the connecting frame 4, one end of the locking elastic member 51 is connected to the connecting frame 4, and the other end of the locking elastic member 51 is connected to the locking column 52 to drive the locking column 52 to be inserted into the first limiting hole 21 from back to front.

[0040] In the detachable armrest mechanism provided by the utility model, the armrest body 6 is installed on the connecting frame 4, and then the first connecting member 2 and the second connecting member 3 are used to install the connecting frame 4 on the armrest frame 1. In the normal state, the connecting frame 4 can be installed on the first connecting member 2 through the locking assembly 5, so that the entire connecting frame 4 can be firmly installed on the armrest frame 1, and can provide a stable supporting effect when in use. When the user needs to leave the wheelchair from the side, the locking assembly 5 can be used to separate one end of the connecting frame 4 from the first connecting member 2, and then the connecting frame 4 is rotated backward around the connection between the second connecting member 3 and the armrest frame 1 to make the connecting frame 4 leave the side channel. The user can leave the wheelchair from the side, which is very convenient to use. The locking assembly 5 is used to disassemble and fix the connecting frame 4, which is simpler to operate. The user can complete the operation alone, which is more convenient to use.

[0041] In some embodiments, the connecting frame 4 is detachably connected to the second connecting member 3 through a locking assembly 5. The second connecting member 3 is provided with a second limiting hole 31 that is compatible with the locking column 52. Specifically, the second connecting member 3 is also provided with a second plug-in hole 32. The second limiting hole 31 opens to the rear side, and the second plug-in hole 32 opens to the upper side. A locking assembly 5 is also provided at the rear end of the connecting frame 4. In the locking assembly 5 located at the rear end of the connecting frame 4, one end of the locking elastic member 51 is connected to the connecting frame 4, and the other end of the locking elastic member 51 is connected to the locking column 52 to drive the locking column 52 to be plugged into the second limiting hole 31 from front to back. The two ends of the connecting frame 4 are detachably connected to the first connecting member 2 and the second connecting member 3 through the locking assembly 5 respectively. When storing, the entire connecting frame 4 can be removed for better storage, more convenient use, and better storage effect.

[0042] In some embodiments, the locking assembly 5 also includes a pushing column 53, the locking elastic member 51 is a spring sheet, the spring sheet has a fixed portion 511 and a movable portion 512, a locking channel is provided at the end of the connecting frame 4, and a locking hole and a pushing hole connected to the locking channel are provided on the outer wall of the end of the connecting frame 4, the fixed portion 511 abuts against the inner wall of the locking channel, the locking column 52 and the pushing column 53 are both connected to the movable portion 512, and the movable portion 512 is used to drive the locking column 52 and the pushing column 53 to pass through the locking hole and the pushing hole respectively.

[0043] Specifically, Figure 1 As shown, at this time, the connecting frame 4 is in a state of being rotated backward. At this time, the locking channel extends in the front-to-back direction. The locking column 52 and the pushing column 53 both protrude upward from the connecting frame 4. When the user presses the pushing column 53, the locking column 52 is driven to move downward through the movable portion 512. At this time, the connecting frame 4 is rotated forward to insert the front end of the connecting frame 4 into the first plug-in hole 22. When the pushing column 53 is released, the locking column 52 can move forward under the action of the spring and be inserted into the first limiting hole 21. By using the pushing column 53 to drive the locking column 52 to move, it is more convenient to use.

[0044] In some embodiments, the locking assembly 5 also includes a pressing plate 54, which is rotatably connected to the connecting frame 4, and the pushing column 53 abuts against the pressing plate 54. When the user uses it, the pushing column 53 can be driven to move by pressing the pressing plate 54. Compared with directly pressing the pushing column 53, the force area of ​​the finger is larger, which can reduce the discomfort during pressing and provide a better user experience.

[0045] In some embodiments, the second connecting member 3 has a stop portion 33, and the armrest frame 1 is provided with a limiting portion 110 that cooperates with the stop portion 33. The limiting portion 110 is used to limit the rotation angle of the second connecting member 3. Through the cooperation of the stop portion 33 and the limiting portion 110, the rotation angle of the second connecting member 3 can be limited, that is, the rotation angle of the connecting frame 4 can be limited, which is convenient for the user to insert the front end of the connecting frame 4 back to the first connecting member 2, which is more convenient to use.

[0046] In a specific embodiment, Figure 3 As shown, the limiting portion 110 has an arc-shaped limiting groove. Specifically, the anti-rotation portion 33 is convex, and the anti-rotation portion 33 can rotate about 90 degrees along the limiting groove, which is more convenient to use.

[0047] In a specific embodiment, Figure 4 As shown, the second connecting member 3 is cylindrical in shape, and the anti-rotation portion 33 protrudes from the second connecting member 3 along the radial direction of the second connecting member 3. Specifically, at this time, the armrest frame 1 itself plays a role in limiting the rotation angle of the connecting frame 4. By limiting the rotation range of the connecting frame 4 to about 90 degrees, it is also very convenient to use.

[0048] In some embodiments, Figure 5 As shown, a fastener 41 is provided at one end of the connecting frame 4 which is plugged into the first connecting member 2. The fastener 41 is made of plastic and has a conical shape. A conical groove which matches the fastener 41 is provided at the bottom of the first plug-in hole 22. The conical groove and the conical fastener 41 can be inlaid and matched, so that the fit between the connecting frame 4 and the first connecting member 2 is more compact, and looseness between the connecting frame 4 and the first connecting member 2 is prevented. Similarly, the fit between the locking column 52 on the locking elastic member 51 and the first limiting hole 21 is also more compact, so that the connecting frame 4 can be stably plugged into the first connecting member 2 to prevent shaking, with better supporting effect and more stable overall structure. In addition, the fastener 41 is conical in design, so that the connecting frame 4 can be more conveniently plugged into the first connecting member 2, and it is also more convenient to use.

[0049] In some embodiments, the detachable armrest mechanism further includes a baffle 7, which is disposed on the connecting frame 4. By providing the baffle 7, the protective effect of the entire armrest mechanism can be improved, and the structural stability of the entire armrest mechanism can also be improved.

[0050] like Figure 1 and Figure 2As shown, the utility model provides a wheelchair, including a seat cushion 8, a back cushion 9, a push handle 10, a movable wheel 11 and the above-mentioned detachable armrest mechanism, the number of the detachable armrest mechanisms is two and they are arranged at intervals in the left and right directions, the seat cushion 8 is arranged between the two detachable armrest mechanisms, the back cushion 9 is arranged between the two detachable armrest mechanisms, the push handle 10 is arranged on the upper side of the armrest frame 1, and the movable wheel 11 is arranged on the lower side of the armrest frame 1.

[0051] In the wheelchair provided by the utility model, the above-mentioned detachable armrest mechanism is adopted. The user can use the locking assembly 5 to disengage the front end of the connecting frame 4 from the first connecting member 2, and by rotating the connecting frame 4 backward, the armrest body 6 is transformed between a supporting state (blocking the access channels on the left and right sides of the wheelchair) and a folded state (opening the access channels on the left and right sides of the wheelchair). In this way, the safety and riding comfort of the wheelchair during movement, as well as the convenience of opening and closing the side channels of the wheelchair during non-movement can be taken into account. The user can complete the operation alone, which is more convenient to use.

[0052] In some embodiments, the wheelchair also includes a folding frame 12, which is arranged below the seat cushion 8. Both ends of the folding frame 12 are respectively connected to two detachable armrest mechanisms. By adopting the folding frame 12, the entire wheelchair can be folded and stored more conveniently, making it more convenient to use.

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A detachable armrest mechanism, characterized in that: include: Handrail (1); A first connecting member (2), the first connecting member (2) being arranged on the handrail frame (1), the first connecting member (2) being provided with a first limiting hole (21); A second connecting member (3), the second connecting member (3) being rotatably connected to the handrail frame (1); A connecting frame (4), one end of the connecting frame (4) being detachably connected to the first connecting member (2), and the other end of the connecting frame (4) being connected to the second connecting member (3); A locking assembly (5), the locking assembly (5) being arranged on the connecting frame (4), the locking assembly (5) comprising a locking elastic member (51) and a locking column (52), the locking elastic member (51) being connected to the locking column (52) so as to drive the locking column (52) to be inserted into the first limiting hole (21); An armrest body (6), wherein the armrest body (6) is arranged on the connecting frame (4).

2. The detachable armrest mechanism according to claim 1, characterized in that: The connecting frame (4) is detachably connected to the second connecting member (3) via the locking assembly (5); the second connecting member (3) is provided with a second limiting hole (31) adapted to the locking column (52).

3. The detachable armrest mechanism according to claim 1, characterized in that: The locking assembly (5) further comprises a pushing column (53), the locking elastic member (51) is a spring sheet, the spring sheet has a fixed portion (511) and a movable portion (512), a locking channel is provided at the end of the connecting frame (4), a locking hole and a pushing hole communicated with the locking channel are provided at the outer wall of the end of the connecting frame (4), the fixed portion (511) abuts against the inner wall of the locking channel, the locking column (52) and the pushing column (53) are both connected to the movable portion (512), and the movable portion (512) is used to drive the locking column (52) and the pushing column (53) to pass through the locking hole and the pushing hole respectively.

4. The detachable armrest mechanism according to claim 3, characterized in that: The locking assembly (5) further comprises a pressing plate (54), wherein the pressing plate (54) is rotatably connected to the connecting frame (4), and the pushing column (53) abuts against the pressing plate (54).

5. The detachable armrest mechanism according to claim 1, characterized in that: The second connecting member (3) has a rotation-stopping portion (33), and the handrail frame (1) is provided with a limiting portion (110) matched with the rotation-stopping portion (33), and the limiting portion (110) is used to limit the rotation angle of the second connecting member (3).

6. The detachable armrest mechanism according to claim 5, characterized in that: The limiting portion (110) has an arc-shaped limiting groove.

7. The detachable armrest mechanism according to claim 5, characterized in that: The second connecting member (3) has a cylindrical outer shape, and the anti-rotation portion (33) protrudes from the second connecting member (3) along the radial direction of the second connecting member (3).

8. The detachable armrest mechanism according to claim 1, characterized in that: The first connecting member (2) is provided with a first plugging hole (22) for the connecting frame (4) to be plugged in, and one end of the connecting frame (4) plugged in the first connecting member (2) is provided with a fastener (41), the fastener (41) is a plastic member, and the shape of the fastener (41) is conical, and the bottom of the first plugging hole (22) is provided with a conical groove matched with the fastener (41).

9. A wheelchair, characterized in that: It comprises a seat cushion (8), a back cushion (9), a push handle (10), a movable wheel (11) and a detachable armrest mechanism as described in any one of claims 1 to 8, wherein the number of the detachable armrest mechanisms is two, the seat cushion (8) is arranged between the two detachable armrest mechanisms, the back cushion (9) is arranged between the two detachable armrest mechanisms, the push handle (10) is arranged on the upper side of the armrest frame (1), and the movable wheel (11) is arranged on the lower side of the armrest frame (1).

10. The wheelchair according to claim 9, characterized in that: The wheelchair also comprises a folding frame (12), wherein the folding frame (12) is arranged below the seat cushion (8), and the two ends of the folding frame (12) are respectively connected to the two detachable armrest mechanisms.

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