Folding lock catch for wheelchair
By designing a wheelchair folding lock with slidable connecting pin and locking pin, the existing locking lock has been solved, and the convenience of operation and aesthetics are achieved when folding the wheelchair is achieved.
Patent Information
- Application Number
- CN202422097457.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing wheelchair folding locks are laborious and have poor aesthetics during operation, which poses a risk of clamping hands.
A folding lock buckle including a connecting rod, a slidable connecting pin, a locking pin, a drawstring and a handle are designed. By rotating the handle, the connecting pin slides, and the locking pin is retracted into the pin sleeve under the action of the pull rope, achieving easy folding of the wheelchair.
It makes the operation easier and more labor-saving when folding the wheelchair, avoids the risk of clamping hands, and improves the aesthetics.
Smart Images
Figure CN223041727U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wheelchair accessories, and particularly relates to a folding buckle for a wheelchair. Background Art
[0002] A wheelchair is a chair equipped with wheels to help replace walking, and is an important mobile tool for the wounded, sick, and disabled for home rehabilitation, turnover transportation, medical treatment, and outdoor activities. The wheelchair not only meets the transportation needs of the physically disabled and the mobility-impaired, but more importantly, it facilitates the movement and care of the sick by their families, enabling the sick to exercise their bodies and participate in social activities with the help of the wheelchair.
[0003] For easy carrying, wheelchairs are generally of a foldable structure. In the prior art, most of the buckles used to control the folding of wheelchairs adopt a plate buckle structure, and there are some problems in actual use, such as:
[0004] 1. When folding the wheelchair, the operation is relatively laborious, and there is also a risk of pinching hands;
[0005] 2. The plate buckle structure is exposed, resulting in poor aesthetics. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a folding buckle for a wheelchair to solve the problems mentioned in the above background art. The folding buckle for a wheelchair provided by the utility model has the characteristics of simple and convenient operation and good aesthetics.
[0007] To achieve the above purpose, the utility model provides the following technical solution: A folding buckle for a wheelchair includes a connecting rod. Two slidable connecting pins are provided at the middle position of the connecting rod. A pin sleeve is connected to the end of the connecting rod. A locking pin slides inside the pin sleeve. The locking pin is connected to the connecting pin by a pull rope. A handle is provided outside the connecting rod. The handle includes two shells, and a guiding groove corresponding to the end of the connecting pin is provided inside the shell.
[0008] To guide and limit the movement of the connecting pin, further, two symmetrical sliding grooves are provided at the middle position of the connecting rod.
[0009] To axially limit the handle and guide the rotation of the handle, further, two limiting sleeves corresponding to the ends of the handle are connected to the connecting rod.
[0010] To achieve the limit between the collar and the connecting rod, further, the limiting sleeve includes two identical collars. A limiting protrusion is provided inside the collar. A limiting groove corresponding to the limiting protrusion is provided on the connecting rod.
[0011] In order to achieve axial limit of the handle and guide the rotation of the handle, further, a convex ring is provided at the end of the collar, and a clamping groove corresponding to the convex ring is provided on the housing.
[0012] In order to make the locking pin in the extended state in the natural state, and further, after the handle is released, the locking pin and the handle can be automatically reset. Further, a spring is sleeved on the locking pin, and the spring is located inside the pin sleeve.
[0013] Compared with the prior art, the beneficial effects of the present utility model are:
[0014] By rotating the handle of the present utility model, the connecting pin can be driven to slide in the guiding groove, so that the locking pin is driven to retract into the pin sleeve under the action of the pulling rope, realizing the unlocking during the folding of the wheelchair. Compared with the traditional buckle structure, it has the characteristics of more convenient and labor-saving operation, no risk of pinching hands and good aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is an exploded structural view of the present utility model;
[0016] Figure 2 is a structural view of the connecting rod of the present utility model;
[0017] Figure 3 is a structural view of the housing of the present utility model;
[0018] Figure 4 is a structural view of the limiting sleeve of the present utility model;
[0019] Figure 5 is a partial sectional structural view of the present utility model;
[0020] Figure 6 is a structural view of the present utility model after removing one housing;
[0021] Figure 7 is a structural view of the present utility model after being installed with the wheelchair body;
[0022] In the figure: 1, locking pin; 2, pin sleeve; 3, spring; 4, pulling rope; 5, limiting sleeve; 51, collar; 52, limiting protrusion; 53, convex ring; 6, connecting pin; 7, connecting rod; 71, sliding groove; 72, limiting groove; 8, handle; 81, housing; 82, guiding groove; 83, clamping groove; 9, folding lock buckle body; 10, backrest; 11, wheelchair body; 12, side support frame. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] Embodiment 1
[0025] Please refer to Figure 1-7 , the present utility model provides the following technical solutions: A folding latch for a wheelchair, including a connecting rod 7. Two slidable connecting pins 6 are provided at the middle position of the connecting rod 7. A pin sleeve 2 is connected to the end of the connecting rod 7. A locking pin 1 slides inside the pin sleeve 2. The locking pin 1 is connected to the connecting pin 6 through a pull rope 4. A handle 8 is provided outside the connecting rod 7. The handle 8 includes two shells 81. The two shells 81 are connected by screws. A guiding groove 82 corresponding to the end of the connecting pin 6 is provided inside the shell 81;
[0026] In the present utility model, the folding latch body 9 is installed on the backrest 10. The locking pin 1 corresponds to the end of the side support frame 12. The pin sleeve 2 and the connecting rod 7 are connected by screws. The folding latch body 9 is installed by clamping the backrest 10 through the cooperation of the pin sleeve 2 and the connecting rod 7.
[0027] By adopting the above technical solutions, the present utility model can drive the connecting pin 6 to slide in the guiding groove 82 by rotating the handle 8, so as to drive the locking pin 1 to retract into the pin sleeve 2 under the action of the pull rope 4, realizing the unlocking during the folding of the wheelchair. Compared with the traditional plate buckle structure, it has the characteristics of more convenient and labor-saving operation, no risk of pinching hands, and good aesthetics.
[0028] Specifically, two symmetrical sliding grooves 71 are provided at the middle position of the connecting rod 7.
[0029] By adopting the above technical solutions, it is used to guide and limit the movement of the connecting pin 6.
[0030] Specifically, two limiting sleeves 5 corresponding to the ends of the handle 8 are connected to the connecting rod 7.
[0031] By adopting the above technical solutions, axial limitation is performed on the handle 8, and guiding is performed on the rotation of the handle 8.
[0032] Specifically, a spring 3 is sleeved on the locking pin 1. The spring 3 is located inside the pin sleeve 2.
[0033] By adopting the above technical solutions, the locking pin 1 is in the extended state in the natural state. In addition, after the handle 8 is released, the locking pin 1 and the handle 8 can be automatically reset.
[0034] Embodiment 2
[0035] The difference between this embodiment and Embodiment 1 lies in that: Specifically, the limit sleeve 5 includes two identical ring sleeves 51. A limit protrusion 52 is provided inside the ring sleeve 51, and a limit groove 72 corresponding to the limit protrusion 52 is provided on the connecting rod 7.
[0036] By adopting the above technical solution, the limit between the ring sleeve 51 and the connecting rod 7 is realized by the limit protrusion 52 being inserted into the limit groove 72.
[0037] Specifically, a convex ring 53 is provided at the end of the ring sleeve 51, and a clamping groove 83 corresponding to the convex ring 53 is provided on the housing 81.
[0038] By adopting the above technical solution, the clamping groove 83 is stuck outside the convex ring 53 to realize axial limit and guide the rotation of the handle 8.
[0039] In summary, by rotating the handle 8 of the present utility model, the connecting pin 6 can be driven to slide in the guide groove 82, so that under the action of the pull rope 4, the locking pin 1 is driven to retract into the pin sleeve 2, realizing the unlocking when the wheelchair is folded. Compared with the traditional buckle structure, it has the characteristics of more convenient and labor-saving operation, no risk of pinching hands and good aesthetics.
[0040] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A folding lock for a wheelchair, characterized in that: It includes a connecting rod, two slidable connecting pins are provided in the middle of the connecting rod, the ends of the connecting rod are connected to pin sleeves, a locking pin is slid inside the pin sleeve, the locking pin and the connecting pin are connected by a pull rope, a handle is provided on the outside of the connecting rod, the handle includes two shells, and guide grooves corresponding to the ends of the connecting pins are provided inside the shells.
2. A folding lock for a wheelchair according to claim 1, characterized in that: Two symmetrical sliding grooves are arranged in the middle of the connecting rod.
3. A folding lock for a wheelchair according to claim 1, characterized in that: The connecting rod is connected to two limiting sleeves corresponding to the ends of the handle.
4. A folding lock for a wheelchair according to claim 3, characterized in that: The limiting sleeve comprises two ring sleeves with the same structure, and limiting protrusions are arranged inside the ring sleeves.
5. A folding lock for a wheelchair according to claim 4, characterized in that: The connecting rod is provided with a limiting groove corresponding to the limiting protrusion.
6. A folding lock for a wheelchair according to claim 4, characterized in that: The end of the ring sleeve is provided with a convex ring.
7. A folding lock for a wheelchair according to claim 6, characterized in that: The housing is provided with a clamping groove corresponding to the convex ring.
8. The folding lock for a wheelchair according to claim 1, characterized in that: The lock pin is sleeved with a spring, which is located inside the pin sleeve.