Elderly wheelchair with anti-pinch folding mechanism

Abstract

The utility model discloses an elderly wheelchair with an anti-pinch folding mechanism, which belongs to the technical field of elderly wheelchairs and is characterized by comprising a supporting structure, a moving structure is bolted to the outer side of the supporting structure, and the front side of a mounting block is fixedly connected with the rear side of a supporting piece. The inner wall of the mounting block is rotationally connected with the outer wall of a first rotating piece, the bottom of the first rotating piece is movably connected with the top of a supporting piece, the outer wall of the first rotating piece is rotationally connected with the inner wall of a connecting block, and the inner wall of the connecting block is rotationally connected with the outer wall of a second rotating piece; the outer wall of the movable rod is in sliding connection with the inner wall of the first rotating part, due to the fact that a folding structure of an existing wheelchair for the old generally relates to a plurality of movable parts and connecting parts, in the folding process, if no hand clamping prevention design exists, fingers, skin and other parts of a user or a nurse are extremely easily clamped between folding joints or gaps or the parts, and therefore the user or the nurse cannot clamp the fingers or the skin easily. And the extrusion injury is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology for the elderly, and in particular to a wheelchair for the elderly with an anti-pinch folding mechanism. Background Technology

[0002] Against the backdrop of an increasingly aging society and a continuously growing elderly population, mobility impairment due to declining physical function is becoming more and more common. Traditional assistive walking tools are struggling to meet the diverse needs of the elderly in terms of comfort, safety, and functionality. This has led to the development of wheelchairs for the elderly, which are assistive mobility tools specifically designed and manufactured for seniors. These wheelchairs are powered by either human or electric motors. With advancements in materials science, mechanical manufacturing technology, and intelligent control technology, modern wheelchairs for the elderly utilize lightweight, high-strength materials to improve portability and optimize seat and backrest designs to enhance comfort, effectively improving the mobility and quality of life for seniors.

[0003] Existing wheelchairs for the elderly often involve multiple moving parts and connecting parts due to their folding structure. If there is no anti-pinch design, the fingers, skin, or other parts of the user or caregiver can easily be caught in the folding joints, gaps, or parts, causing crush injuries.

[0004] Therefore, a wheelchair for the elderly with an anti-pinch folding mechanism is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an elderly wheelchair with an anti-pinch folding mechanism, which can solve the problem that existing elderly wheelchairs usually involve multiple moving parts and connecting parts. During the folding process, if there is no anti-pinch design, the fingers, skin and other parts of the user or caregiver are easily caught between the folding joints, gaps or parts, causing crush injuries.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-pinch folding mechanism for elderly wheelchairs, including a support structure, wherein a movable structure is bolted to the outer side of the support structure;

[0007] The support structure includes two mounting blocks, a support member, a first rotating member, a second rotating member, a connecting block, and a movable rod. The front side of the mounting block is fixedly connected to the rear side of the support member. The inner wall of the mounting block is rotatably connected to the outer wall of the first rotating member. The bottom of the first rotating member is movably connected to the top of the support member. The outer wall of the first rotating member is rotatably connected to the inner wall of the connecting block. The inner wall of the connecting block is rotatably connected to the outer wall of the second rotating member. The outer wall of the movable rod is slidably connected to the inner wall of the first rotating member.

[0008] Preferably, the movable structure includes two connecting frames, two mounting blocks are respectively disposed on the inner side of the two connecting frames, the inner wall of the connecting frame is rotatably connected to a control wheel, and a universal wheel is bolted to the left side of the bottom of the connecting frame.

[0009] Preferably, an armrest is fixedly connected to the top of the connecting frame, a seat cushion is bolted to the top of the connecting frame, the bottom of the seat cushion is movably connected to the top of the first rotating member, and the bottom of the seat cushion is movably connected to the top of the second rotating member.

[0010] Preferably, a connecting rod is bolted to the right side of the top of the connecting frame, and a cushion is bolted to the left side of the connecting rod.

[0011] Preferably, a connecting hole is provided on the left side of the first rotating component, the inner wall of the connecting hole is slidably connected to the outer wall of the movable rod, and a rubber sleeve is provided on the left side of the outer wall of the movable rod.

[0012] Preferably, the bottom of the first rotating component has an elliptical hole, and the bottom of the second rotating component is fixedly connected to a fixing rod.

[0013] Preferably, a pull handle is fixedly connected to the right side of the top of the handrail, and there are two handrails and two pull handles.

[0014] Preferably, there are two connecting rods, which are respectively located on the right side of the top of the two connecting frames. A gripping rod is fixedly connected to the top right side of each of the two connecting rods, and the outer wall of each gripping rod is covered with an anti-slip sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The support structure provided in this application uses the mounting block as the connecting base and the support components to enhance stability. By pulling the movable rod, the first and second rotating components are driven to cooperate with the connecting block to achieve flexible folding of the wheelchair, reducing storage space. In addition, the movable rod is equipped with a rubber sleeve to prevent fingers from being pinched during folding and to ensure user safety.

[0017] 2. The movable structure designed in this application, which combines control wheels and omnidirectional wheels, enables the wheelchair to steer flexibly and move conveniently. The armrests, seat cushion, and backrest enhance riding comfort and safety, meeting the needs of elderly users. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the anti-pinch folding mechanism for the elderly wheelchair of this utility model;

[0019] Figure 2 This is an exploded view of the support structure of this utility model;

[0020] Figure 3 This is a connection diagram of the movable structure of this utility model;

[0021] Figure 4 This utility model Figure 1 A bottom view of the overall structure;

[0022] Figure 5 This utility model Figure 1 Enlarged view of point A in the middle.

[0023] In the diagram, 1. Support structure; 11. Mounting block; 12. Support component; 13. First rotating component; 14. Second rotating component; 15. Connecting block; 16. Movable rod; 2. Moving structure; 21. Connecting frame; 22. Control wheel; 23. Caster wheel; 24. Armrest; 25. Seat cushion; 26. Connecting rod; 27. Backrest cushion; 3. Rubber sleeve; 4. Oval hole; 5. Fixing rod; 6. Pull handle; 7. Grip rod; 8. Anti-slip sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] An anti-pinch folding mechanism for elderly wheelchairs includes a support structure 1, with a movable structure 2 bolted to the outside of the support structure 1.

[0027] The support structure 1 includes two mounting blocks 11, a support member 12, a first rotating member 13, a second rotating member 14, a connecting block 15, and a movable rod 16. The front side of the mounting block 11 is fixedly connected to the rear side of the support member 12. The inner wall of the mounting block 11 is rotatably connected to the outer wall of the first rotating member 13. The bottom of the first rotating member 13 is movably connected to the top of the support member 12. The outer wall of the first rotating member 13 is rotatably connected to the inner wall of the connecting block 15. The inner wall of the connecting block 15 is rotatably connected to the outer wall of the second rotating member 14. The outer wall of the movable rod 16 is slidably connected to the inner wall of the first rotating member 13.

[0028] In this embodiment: a movable structure 2 is provided as the movable part of the overall elderly wheelchair, and a support structure 1 is provided. Two mounting blocks 11 are key components connecting the support structure 1 and the movable structure 2, allowing the first rotating member 13 and the second rotating member 14 to rotate flexibly through the connecting block 15. This is the basic connection point for realizing the folding function of the wheelchair. The supporting member 12 can support the bottom of the first rotating member 13 and the second rotating member 14, increasing the stability of the structure. The first rotating member 13 and the second rotating member 14 are connected by the connecting block 15. During the folding process, they bear the force generated during folding and can adjust the structure of the wheelchair, making the wheelchair occupy less space after folding, which is convenient for transportation and storage. The connecting block 15 connects the first rotating member 13 and the second rotating member 14 together, so that they can work together to realize the folding and unfolding functions of the wheelchair. The movable rod 16 is used by the user to pull out the movable rod 16 and apply force upward during the folding process of the wheelchair, assisting the folding of the support structure 1 and preventing the user's hand from being pinched when the wheelchair is closed, thus ensuring the user's safety.

[0029] Specifically, such as Figure 3 , Figure 4 , Figure 5 As shown, the movable structure 2 includes two connecting frames 21, two mounting blocks 11 are respectively disposed on the inner side of the two connecting frames 21, the inner wall of the connecting frame 21 is rotatably connected to the control wheel 22, and the bottom left side of the connecting frame 21 is bolted with a universal wheel 23.

[0030] Specifically, such as Figure 3 , Figure 4 , Figure 5 As shown, an armrest 24 is fixedly connected to the top of the connecting frame 21, a seat cushion 25 is bolted to the top of the connecting frame 21, the bottom of the seat cushion 25 is movably connected to the top of the first rotating member 13, and the bottom of the seat cushion 25 is movably connected to the top of the second rotating member 14.

[0031] Specifically, such as Figure 3 , Figure 4 , Figure 5 As shown, a connecting rod 26 is bolted to the right side of the top of the connecting frame 21, and a cushion 27 is bolted to the left side of the connecting rod 26.

[0032] In this embodiment: by setting up a movable structure 2, in which the connecting frame 21 serves as the main body of the movable structure 2, the support structure 1 and the movable components are connected as a whole, so that the support and movement functions of the wheelchair can be realized in a coordinated manner. The set up control wheels 22 allow the user to easily control the forward, backward and turning directions of the wheelchair by operating the control wheels 22. The set up universal wheels 23 can rotate freely, allowing the wheelchair to turn flexibly. The set up armrests 24 provide support and handrails for the elderly when riding in the wheelchair, making it convenient for the user to get in and out of the wheelchair and maintain body balance during the ride. The set up seat cushion 25 is made of a soft and elastic material, which can reduce body pressure. The set up connecting rod 26 provides a mounting base for the back cushion 27, and the set up back cushion 27 provides back support for the elderly when riding in the wheelchair.

[0033] Specifically, such as Figure 2 As shown, a connecting hole is provided on the left side of the first rotating part 13, and the inner wall of the connecting hole is slidably connected to the outer wall of the movable rod 16. A rubber sleeve 3 is fitted on the left side of the outer wall of the movable rod 16.

[0034] Specifically, such as Figure 2 , Figure 5 As shown, the bottom of the first rotating component 13 is provided with an elliptical hole 4, and the bottom of the second rotating component 14 is fixedly connected with a fixing rod 5.

[0035] In this embodiment: the connecting hole of the first rotating member 13 allows the movable rod 16 to slide on the inner wall of the first rotating member 13. By setting the elliptical hole 4 in the first rotating member 13 and the fixing rod 5 fixed to the second rotating member 14, when the first rotating member 13 and the second rotating member 14 are closed, the fixing rod 5 can be inserted into the inner side of the first rotating member 13, which enhances the stability of the support structure 1 in the folded state and makes the wheelchair structure compact after folding.

[0036] Specifically, such as Figure 1 As shown, a pull handle 6 is fixedly connected to the top right side of the handrail 24, and there are two handrails 24 and two pull handles 6.

[0037] Specifically, such as Figure 1 , Figure 3 , Figure 4 As shown, there are two connecting rods 26, which are respectively located on the right side of the top of the two connecting frames 21. A gripping rod 7 is fixedly connected to the top right side of each of the two connecting rods 26, and an anti-slip sleeve 8 is fitted on the outer wall of each of the two gripping rods 7.

[0038] In this embodiment: by setting up a pull handle 6, the user can apply force by pulling the handle 6 when folding or unfolding the wheelchair, making the operation more effortless and convenient. By setting up a grip bar 7, caregivers or family members can easily grasp the wheelchair when pushing it, making the pushing process more stable and effortless. The anti-slip sleeve 8 is made of rubber material and is fitted on the outer wall of the grip bar 7 to increase the friction of the grip bar 7 surface, preventing caregivers or family members from slipping their hands when pushing the wheelchair, and ensuring the safety and stability of the pushing process.

[0039] Working principle: When using a wheelchair, the control wheels 22 and swivel wheels 23 of the moving structure 2 work together. The user controls the wheelchair to move forward, backward, and turn using the control wheels 22, while the swivel wheels 23 ensure flexible turning in narrow spaces. The armrests 24, seat cushion 25, and backrest cushion 27 provide comfortable support for the elderly. When the wheelchair needs to be folded, the user first grasps the pull handle 6 and applies force to pull out the movable rod 16 and lift it upward. The movable rod 16 drives the first rotating component 13 and the second rotating component 14 to rotate under the action of the connecting block 15, causing the wheelchair structure to fold. During this process, the rubber sleeve 3 on the movable rod 16 prevents the user's hand from being pinched. When the first rotating component 13 and the second rotating component 14 are closed, the fixing rod 5 of the second rotating component 14 is inserted into the elliptical hole 4 of the first rotating component 13, enhancing the stability of the folded state. When unfolding the wheelchair, the pull handle 6 is operated in the opposite direction to unfold the first rotating component 13 and the second rotating component 14. The movable rod 16 returns to its original position, the support structure 1 returns to its unfolded state, and the wheelchair returns to its normal use mode. The whole process is convenient and safe.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wheelchair for the elderly with an anti-pinch folding mechanism, comprising a support structure (1), characterized in that: The outer side of the support structure (1) is bolted with a movable structure (2). The support structure (1) includes two mounting blocks (11), a support member (12), a first rotating member (13), a second rotating member (14), a connecting block (15), and a movable rod (16). The front side of the mounting block (11) is fixedly connected to the rear side of the support member (12). The inner wall of the mounting block (11) is rotatably connected to the outer wall of the first rotating member (13). The bottom of the first rotating member (13) is movably connected to the top of the support member (12). The outer wall of the first rotating member (13) is rotatably connected to the inner wall of the connecting block (15). The inner wall of the connecting block (15) is rotatably connected to the outer wall of the second rotating member (14). The outer wall of the movable rod (16) is slidably connected to the inner wall of the first rotating member (13).

2. The wheelchair for the elderly with an anti-pinch folding mechanism according to claim 1, characterized in that: The movable structure (2) includes two connecting frames (21), two mounting blocks (11) are respectively set on the inner side of the two connecting frames (21), the inner wall of the connecting frame (21) is rotatably connected to the control wheel (22), and the bottom left side of the connecting frame (21) is bolted with a universal wheel (23).

3. The wheelchair for the elderly with an anti-pinch folding mechanism according to claim 2, characterized in that: The top of the connecting frame (21) is fixedly connected to an armrest (24), and the top of the connecting frame (21) is bolted to a seat cushion (25). The bottom of the seat cushion (25) is movably connected to the top of the first rotating member (13), and the bottom of the seat cushion (25) is movably connected to the top of the second rotating member (14).

4. The elderly wheelchair with an anti-pinch folding mechanism according to claim 2, characterized in that: A connecting rod (26) is bolted to the right side of the top of the connecting frame (21), and a cushion (27) is bolted to the left side of the connecting rod (26).

5. The elderly wheelchair with an anti-pinch folding mechanism according to claim 1, characterized in that: The first rotating part (13) has a connecting hole on its left side. The inner wall of the connecting hole is slidably connected to the outer wall of the movable rod (16). A rubber sleeve (3) is fitted on the left side of the outer wall of the movable rod (16).

6. The elderly wheelchair with an anti-pinch folding mechanism according to claim 1, characterized in that: The bottom of the first rotating part (13) is provided with an elliptical hole (4), and the bottom of the second rotating part (14) is fixedly connected with a fixing rod (5).

7. The elderly wheelchair with an anti-pinch folding mechanism according to claim 3, characterized in that: A pull handle (6) is fixedly connected to the right side of the top of the handrail (24), and there are two handrails (24) and two pull handles (6).

8. The elderly wheelchair with an anti-pinch folding mechanism according to claim 4, characterized in that: There are two connecting rods (26) respectively located on the right side of the top of the two connecting frames (21). The top right side of each connecting rod (26) is fixedly connected to a gripping rod (7), and the outer wall of each gripping rod (7) is covered with an anti-slip sleeve (8).

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