Handle fixing mechanism and wheelchair
By designing a detachable base and locking mechanism on the electric wheelchair, the problems of difficult handle removal and poor adaptability for left-handed users in the prior art have been solved, achieving stability and convenience of the handle and improving the versatility of the wheelchair.
Patent Information
- Application Number
- CN202423251382.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The control handles and armrests of existing electric wheelchairs are too firmly connected and difficult to disassemble. Furthermore, left-handed users cannot easily move the handles from the right side to the left side, which reduces the versatility and flexibility of the wheelchair.
A handle fixing mechanism is designed, including a base and a locking mechanism. The base is fixed to the wheelchair armrest, and the handle bar is fixed by a detachable locking mechanism. Users can switch between left and right hands according to their personal habits and needs. The design adopts a sloping surface, bottom surface and window to improve stability and flexibility.
It achieves stability and safety of the handle, while improving the convenience of user operation and the flexibility of the wheelchair, adapting to the usage habits of different users.
Smart Images
Figure CN223746591U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric wheelchair technical field especially, relate to a handle fixing mechanism and wheelchair. BACKGROUND
[0002] Wheelchair can be divided into two categories of electric type and manual type according to the different driving modes, and the original design mainly aims at specific groups such as disabled people, the elderly, the action limited person, the wounded and the rehabilitation patient.Wheelchair not only provides convenient moving means for the person with limited physical function, but also significantly reduces the moving burden of his family in the nursing process.In addition, the use of wheelchair also helps the patient to exercise the body and promotes social integration.Electric wheelchair is formed by integrating high-performance driving system, intelligent control system and battery and other core components on the basis of traditional manual wheelchair, and is formed by technological innovation and functional upgrading.In daily use, the user can realize the forward movement, backward movement, turning and stopping of wheelchair by operating the joystick, which provides great convenience for the disabled or the person with difficulty in moving.
[0003] In the prior art, the handrail usually extends to the front, so that the driver can comfortably rest his arm on the handrail.The operating handle is fixedly installed at the end of the handrail, so that the driver can easily rest his hand on the operating handle.However, the connection between the operating handle and the handrail of most electric wheelchairs is very firm, so that when disassembly is required, the user often needs to use some special tools or mechanical devices to disassemble, which undoubtedly increases the difficulty and complexity of operation.In addition, the operating handle is usually installed on the right-hand side of the handrail, which makes it impossible for left-handed users to simply move the handle from the right-hand side to the left-hand side when using it.Therefore, when there are multiple users in a family, it is necessary to consider purchasing a wheelchair specially designed for left-handed people or finding other ways to adapt to the right-hand operating handle.This not only increases the additional economic burden, but also reduces the versatility and flexibility of the wheelchair. SUMMARY
[0004] The main purpose of the utility model is to provide a handle fixing mechanism and wheelchair, so as to overcome the deficiencies in the prior art.
[0005] To achieve the foregoing utility model purposes, the utility model adopts the technical scheme including:
[0006] The first aspect of the utility model discloses a handle fixing mechanism, including a base and a locking mechanism. The base includes the first assembly part, the second assembly part of adjacent arrangement, the locking mechanism is configured on the first assembly part, the second assembly part is used for assembling handle pole, the locking mechanism includes the first fastener component, the second fastener component, the first fastener component with second fastener component can be configured as locking state and unlocking state, when the first fastener component with second fastener component is configured as locking state, the second fastener component is fixed on the first assembly part with handle pole contact, and handle pole is locked in the second assembly part, when the first fastener component with second fastener component is configured as unlocking state, the second fastener component with the first assembly part movable cooperation, and can be movable in the first assembly part.
[0007] In the scheme, the base can be installed on the handrails on both sides of the wheelchair. These bases will be firmly fixed on the wheelchair handrails to ensure stability and safety during use. The locking mechanism detachably fixes the handle rod on the base. This allows users to switch between left and right hands according to personal habits and needs, improving flexibility and convenience.
[0008] In some more specific embodiments, the base is provided with a first fixing groove that accommodates the first assembly part and the second assembly part. The first fixing groove includes several key parts: a slope, a bottom surface, an opposite slope, and a first side surface and a second side surface connecting the slope and the bottom surface. A first vertical through hole is provided on the slope. The first side surface and the second side surface are provided with a first window and a second window, respectively. During assembly, the handle rod passes through the two windows and is finally assembled on the second assembly part. This design not only ensures the stability of the handle rod, but also makes the operation of the entire device more flexible. In addition, the first fastener component passes through the first vertical through hole, and when the second fastener component is fixed to the first assembly part, the first fastener component and the second fastener component are in close contact. This contact not only ensures the stability of the second fastener component, but also allows the handle rod to be locked on the second assembly part, thereby ensuring the stability and reliability of the entire device during use.
[0009] In some specific embodiments, the second fastening assembly comprises a pressing block and an abutting structure. The top surface of the pressing block is provided with a second vertical through hole, so that the pressing block can be effectively connected and fixed with other components. In addition, the side of the pressing block in contact with the handle rod is further provided with a horizontal through hole, which extends through the pressing block and extends to the inside of the pressing block until it perfectly interfaces with the wall surface of the second vertical through hole. Such a design ensures that the abutting structure can be installed and positioned through the horizontal through hole. The first fastening assembly can pass through the first vertical through hole and the second vertical through hole to fix the pressing block on the first assembly part, and can effectively act on the abutting structure to ensure that the pressing block can be tightly attached to the handle rod, thereby improving the overall stability.
[0010] In some specific embodiments, the lower edge of the first window is in contact with the bottom surface of the first fixed groove, and the lower edge of the first window is kept at a predetermined interval from the inclined surface of the first fixed groove. Such a design is to leave a certain space so that the pressing block can be smoothly clamped and fixed between the bottom plane of the first fixed groove and the inclined surface of the first fixed groove, thereby achieving a stable and firm fixing effect.
[0011] Preferably, the width of the first window is less than the width of the bottom surface of the first fixed groove, and the height is less than the height of the first side surface and / or the second side surface of the first fixed groove.
[0012] Preferably, the lower edge of the second window is in contact with the bottom surface of the first fixed groove, and the lower edge of the second window is kept at a predetermined interval from the inclined surface of the first fixed groove.
[0013] Preferably, the width of the second window is less than the width of the bottom surface of the first fixed groove, and the height is less than the height of the first side surface and / or the second side surface of the first fixed groove.
[0014] In some specific embodiments, the oblique surface is provided with a third window, and the width of the third window is less than or equal to the length of the bottom surface of the first fixed groove, and the height is less than or equal to the height of the oblique surface of the first fixed groove.
[0015] In some specific embodiments, the cross section of the first fixed groove is in the shape of a trapezoid with a short lower part and a long upper part along the direction away from the top surface of the first fixed groove.
[0016] Preferably, the projections of the first window and the second window in the horizontal direction overlap.
[0017] Preferably, the diameter of the first vertical through hole is greater than the diameter of the second vertical through hole.
[0018] Preferably, the horizontal cross section of the first vertical through hole is elliptical.
[0019] In some more specific embodiments, the base is provided with a second fixing groove, and a fastening mechanism is arranged on the second fixing groove, the fastening mechanism comprising a first slot hole and a fastener, the first slot hole being located inside the second fixing groove, and the fastener penetrating through the first slot hole to fix the base and the wheelchair armrest together.
[0020] In some more specific embodiments, the base is further provided with a third fixing groove, the third fixing groove being arranged in a vertical direction with the second fixing groove and being located below the second fixing groove, a second slot hole being arranged on the third fixing groove, the second slot hole overlapping the first slot hole in a vertical direction, and the fastener penetrating through the first slot hole and the second slot hole to fix the base and the wheelchair armrest together.
[0021] Preferably, the second fixing groove has a U-shaped cross section, and the top surface of the third fixing groove has a U-shaped cross section with a curvature consistent with that of the second fixing groove. The U-shaped cross section of the second fixing groove can provide good fixing effect and adapt to components of different sizes. In addition, the top surface of the third fixing groove also has a U-shaped cross section with a curvature consistent with that of the second fixing groove, which not only ensures the unity of the structure, but also helps to improve the overall stability and carrying capacity.
[0022] Preferably, the fastening mechanism is a bolt structure.
[0023] Preferably, the bottom surface of the third fixing groove is parallel to the bottom surface of the base.
[0024] The second aspect of the utility model provides a wheelchair, including wheelchair main body, the wheelchair main body at least includes wheelchair armrest, handle fixing mechanism is provided on the wheelchair armrest.
[0025] Compared with the prior art, the utility model has at least the following advantages:
[0026] First, the handle fixing mechanism provided by the utility model comprises a base and a locking mechanism. The base is fixed on the wheelchair armrest to ensure stability and safety during use. The locking mechanism detachably fixes the handle rod on the base, so that users can switch between left and right hands according to personal habits and needs, improving flexibility and convenience.
[0027] Second, the utility model provides a handle fixed establishment, the top of the compression block is equipped with second vertical through -hole, make compression block can with other assembly carry out effective connection and fixed. Besides, the side of compression block contact handle rod still is equipped with horizontal through -hole, this horizontal through -hole passes through compression block, and extends to compression block inside, until with the wall surface of second vertical through -hole perfect interface. Such design ensures that the abutment structure can be installed and positioned through this horizontal through -hole. First fastening assembly can pass through first vertical through -hole and second vertical through -hole, fix compression block on first assembly part, and can effectively act on abutment structure, ensure that compression block and handle rod can be closely attached, thereby improve the stability of whole. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is the structure schematic drawing of handle fixed establishment provided by the utility model embodiment;
[0029] Figure 2 It is the structure schematic drawing of base provided by the utility model embodiment;
[0030] Figure 3 It is the structure schematic drawing of base provided by the utility model embodiment;
[0031] Figure 4 It is the structure schematic drawing of base provided by the utility model embodiment;
[0032] Figure 5 It is the structure schematic drawing of base provided by the utility model embodiment;
[0033] Figure 6 It is the structure schematic drawing of compression block provided by the utility model embodiment;
[0034] Figure 7 It is the internal structure schematic drawing of compression block provided by the utility model embodiment;
[0035] Figure 8 It is the connection schematic drawing of compression block and compression rod provided by the utility model embodiment;
[0036] Figure 9 It is the connection schematic drawing of compression block and compression rod provided by the utility model embodiment.
[0037] Explanation of reference signs:
[0038] 1, base; 11, first fixed groove; 111, inclined surface; 112, bottom surface; 113, first side surface; 114, second side surface; 115, opposite inclined surface; 116, first window; 117, second window; 118, first vertical through -hole; 12, second fixed groove; 121, first slot hole; 13, third fixed groove; 131, second slot hole;
[0039] 2, pressing block; 21, second vertical through hole; 22, horizontal through hole;
[0040] 3, pressing rod; 4, handle rod. DETAILED DESCRIPTION
[0041] In view of the deficiencies in the prior art, the present inventors have developed the technical solution of the present application through long-term research and extensive practice. The technical solution, its implementation process and principles will be further explained as follows.
[0042] Please refer to Figure 1 A handle fixing mechanism includes a base 1, a pressing block 2, and a pressing rod 3. One end of the base 1 is connected to the wheelchair armrest, and the other end is used to fix the handle rod 4. In this mechanism, the pressing block 2 and the pressing rod 3 are designed to be flexible and switchable. Specifically, they can be configured in a locked state and an unlocked state. When the pressing block 2 and the pressing rod 3 are configured in the locked state, the pressing block 2 is fixed on the base 1 and in close contact with the handle rod 4. This design ensures that the handle rod 4 is locked on the base 1, providing excellent stability. At the same time, this locking mechanism greatly improves the convenience of using the handle, and the user can easily operate without worrying about the stability of the handle rod.
[0043] In this embodiment, as shown in Figures 2-5 The first fixed groove 11 is provided on the base 1. The cross section of the first fixed groove 11 is in the shape of a trapezoid with a short bottom and a long top, with a slope 111, a bottom surface 112, an opposite slope 115, and a first side surface 113 and a second side surface 114 connecting the slope 111 and the bottom surface 112. The first side surface 113 and the second side surface 114 are provided with a first window 116 and a second window 117, respectively. The projections of the first window 116 and the second window 117 in the horizontal direction overlap. This allows the handle rod 4 to smoothly pass through the first window 116 and the second window 117 and be assembled on the base 1. In addition, the slope 111 is provided with a first vertical through hole 118, and the pressing block 2 slides on the slope 111. The pressing rod 3 penetrates the first vertical through hole 118, tightly contacts the pressing block 2 and the handle rod 4, and locks the handle rod 4 on the base 1, ensuring the stability of the structure and improving the convenience of operation.
[0044] In this embodiment, the lower edge of the first window 116 contacts the bottom surface 112 of the first fixing groove 11, and the lower edge of the first window 116 maintains a preset distance from the inclined surface 111 of the first fixing groove 11. The width of the first window 116 is less than the width of the bottom surface 112 of the first fixing groove 11, and the height is less than the height of the first side surface 113 and the second side surface 114 of the first fixing groove 11. The lower edge of the second window 117 contacts the bottom surface 112 of the first fixing groove 11, and the lower edge of the second window 117 maintains a preset distance from the inclined surface 111 of the first fixing groove 11. The width of the second window 117 is less than the width of the bottom surface 112 of the first fixing groove 11, and the height is less than the height of the first side surface 113 and the second side surface 114 of the first fixing groove 11. A third window is provided on the diagonally opposite side 115, the width of the third window is less than or equal to the length of the bottom surface 112 of the first fixing groove 11, and the height is less than or equal to the height of the diagonally opposite side 115 of the first fixing groove 11.
[0045] In this embodiment, the lower edge of the first window 116 is in close contact with the bottom surface 112 of the first fixing groove 11, while maintaining a certain distance from the inclined surface 111 of the first fixing groove 11. The width of the first window 116 is smaller than the width of the bottom surface 112 of the first fixing groove 11, and its height is also lower than the height of the first side surface 113 and the second side surface 114 of the first fixing groove 11. Similarly, the lower edge of the second window 117 is in close contact with the bottom surface 112 of the first fixing groove 11, while maintaining a certain distance from the inclined surface 111 of the first fixing groove 11. The second window 117 is smaller than the width of the bottom surface 112 of the first fixing groove 11, and its height is also lower than the height of the first side surface 113 and the second side surface 114 of the first fixing groove 11. A third window is provided on the diagonally opposite side 115, the width of which is equal to the length of the bottom surface 112 of the first fixing groove 11, and the height of which is equal to the height of the diagonally opposite side 115 of the first fixing groove 11. In other words, the entire diagonally opposite side 115 is the third window. The pressure block 2 can be easily removed through the third window.
[0046] In this embodiment, as Figures 6-7 As shown, the pressure block 2 has a second vertical through hole 21 on its top surface and a horizontal through hole 22 on the side of the pressure block 2 that contacts the handle rod 4. The horizontal through hole 22 extends into the pressure block 2 until it connects with the wall of the second vertical through hole 21. The horizontal through hole 22 is a threaded hole. The screw passes through the horizontal through hole 22, and the pressure rod 3 passes through the first vertical through hole 118 and the second vertical through hole 21, fixing the pressure block 2 to the inclined surface and acting on the screw. The screw mates with the horizontal threaded hole, tightly fitting the pressure block 2 to the handle rod 4. The horizontal cross-section of the first vertical through hole 118 is elliptical. The major axis of the first vertical through hole 118 is larger than the diameter of the second vertical through hole 21.
[0047] In this embodiment, as shown in Figures 2-3 The base 1 is also provided with a second fixing groove 12 and a third fixing groove 13. The second fixing groove 12 and the third fixing groove 13 are arranged in a vertical direction, and specifically, the third fixing groove 13 is located below the second fixing groove 12. The cross section of the second fixing groove 12 is designed as a U-shaped structure, which can effectively increase the strength and stability of the fixing groove. At the same time, the top surface of the cross section of the third fixing groove 13 also adopts a U-shaped structure, and the curvature thereof is consistent with that of the second fixing groove 12, which ensures the consistency of the structure. In addition, the bottom plane of the third fixing groove 13 is parallel to the bottom plane of the base, which helps to ensure the stable connection between the handrail and the base, thereby improving the stability and safety of the entire device.
[0048] The first slot hole 121 is embedded in the second fixing groove 12, and the second slot hole 131 is embedded in the third fixing groove 13. The projections of the first slot hole 121 and the second slot hole 131 in the vertical direction overlap. The base 1 is provided with a fastener, which penetrates the first slot hole 121 and the second slot hole 131 to fix the base 1 and the wheelchair handrail. In this scheme, the fastener is a bolt structure.
[0049] The application also provides a wheelchair, which comprises a wheelchair body, wherein the wheelchair body comprises a pair of handrails, and the handrails are provided with a handle fixing mechanism.
[0050] It should be understood that the above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. A handle securing mechanism, characterized by, The base comprises a first assembly part and a second assembly part arranged adjacently, and a locking mechanism arranged on the first assembly part, The locking mechanism comprises a first fastening component and a second fastening component, the first fastening component and the second fastening component can be arranged in a locked state and an unlocked state, when the first fastening component and the second fastening component are arranged in the locked state, the second fastening component is fixed to the first assembly part and contacts the handle rod, and the handle rod is locked to the second assembly part; When the first fastening component and the second fastening component are arranged in the unlocked state, the second fastening component is movably arranged in the first assembly part.
2. The handle securing mechanism of claim 1, wherein, The base is provided with a first fixing groove, the first assembly part and the second assembly part are arranged in the first fixing groove, the first fixing groove comprises at least a slope, a bottom surface, an opposite slope, and a first side surface and a second side surface connecting the slope and the bottom surface, the second fastening component can slide on the slope, the slope is provided with a first vertical through hole, the first side surface and the second side surface are respectively provided with a first window and a second window, the handle rod passes through the first window and the second window and is assembled on the second assembly part, when the first fastening component passes through the first vertical through hole and fixes the second fastening component to the first assembly part, the second fastening component is in close contact with the handle rod, and the handle rod is locked to the second assembly part.
3. The handle securing mechanism of claim 2, wherein, The second fastening component comprises a pressing block and an abutting structure, the top surface of the pressing block is provided with a second vertical through hole, one side of the pressing block contacting the handle rod is provided with a horizontal through hole extending to the wall surface of the second vertical through hole, the abutting structure passes through the horizontal through hole, and the first fastening component passes through the first vertical through hole and the second vertical through hole to fix the pressing block to the first assembly part and act on the abutting structure, so that the pressing block is in close contact with the handle rod.
4. The handle securing mechanism of claim 2, wherein, The lower edge of the first window is in contact with the bottom surface of the first fixing groove, and the lower edge of the first window maintains a predetermined interval with the slope of the first fixing groove; And / or, the width of the first window is smaller than the width of the bottom surface of the first fixing groove, and the height is smaller than the height of the first side surface and / or the second side surface of the first fixing groove; And / or, the lower edge of the second window is in contact with the bottom surface of the first fixing groove, and the lower edge of the second window maintains a predetermined interval with the slope of the first fixing groove; And / or, the width of the second window is smaller than the width of the bottom surface of the first fixing groove, and the height is smaller than the height of the first side surface and / or the second side surface of the first fixing groove.
5. The handle securing mechanism of claim 2, wherein, The opposite slope is provided with a third window, the width of the third window is less than or equal to the length of the bottom surface of the first fixing groove, and the height is less than or equal to the height of the opposite slope of the first fixing groove.
6. The handle securing mechanism of claim 3, wherein The cross section of the first fixing groove presents a trapezoidal structure with a short lower part and a long upper part in a direction away from the top surface of the first fixing groove; And / or, the projections of the first window and the second window in the horizontal direction overlap; And / or, the diameter of the first vertical through hole is greater than the diameter of the second vertical through hole. And / or, the horizontal cross section of the first vertical through hole is elliptical.
7. The handle securing mechanism of claim 1, wherein The base is provided with a second fixing groove, and a fastening mechanism is arranged on the second fixing groove, the fastening mechanism comprises a first slot hole and a fastener, the first slot hole is located inside the second fixing groove, and the fastener penetrates through the first slot hole to fix the base and the wheelchair armrest.
8. The handle securing mechanism of claim 7, wherein, The base is further provided with a third fixing groove, the third fixing groove is arranged in a vertical direction with the second fixing groove, and the third fixing groove is located below the second fixing groove, a second slot hole is arranged on the third fixing groove, the projection of the second slot hole and the first slot hole in the vertical direction overlaps, and the fastener penetrates through the first slot hole and the second slot hole to fix the base and the wheelchair armrest.
9. The handle securing mechanism of claim 8, wherein, The cross section of the second fixing groove is U-shaped, the top surface of the cross section of the third fixing groove is U-shaped, and the curvature is consistent with that of the second fixing groove. And / or, the fastening mechanism is a bolt structure. And / or, the bottom surface of the third fixing groove is parallel to the bottom surface of the base.
10. A wheelchair characterized by At least comprising a wheelchair armrest, and the handle fixing mechanism as claimed in any one of claims 1-9 is arranged on the wheelchair armrest.