Wheelchair fixer for subway
By using an automatic reset turntable design for the limiting and fixing components, the problems of cumbersome operation and safety hazards of traditional webbing wheelchair fixing devices are solved, achieving a convenient and stable wheelchair fixing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN METRO
- Filing Date
- 2025-09-11
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional webbing wheelchair restraint devices are cumbersome to operate, delay disembarkation time, and pose safety hazards, especially during peak passenger flow periods and when vehicles are in motion, as they can easily cause wheelchair displacement.
The design employs a combination of limiting and fixing components. It uses an automatic reset turntable to restrict the wheelchair hub, combined with a crossbar to provide stability, and allows for convenient fixing and unlocking through a simple pressing operation.
It improves the convenience and stability of wheelchair securing operations, reduces safety hazards, and ensures passenger safety during peak hours and while the vehicle is in motion.
Smart Images
Figure CN224409267U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of subway safety equipment, and in particular relates to a wheelchair restraint for subway use. Background Technology
[0002] As a high-capacity, high-frequency public transportation mode, the subway needs to meet the safe travel needs of wheelchair users. Therefore, the subway will install wheelchair restraint devices in the carriages to secure wheelchair users when they ride the subway.
[0003] Currently, wheelchair restraint devices in subway cars mainly adopt a webbing structure. This involves winding up the webbing using a retractor, wrapping the webbing around the wheelchair, and securing it with a buckle. The device requires manual winding of the webbing and alignment of the latch and buckle, which is difficult for users with physical disabilities to operate independently. During peak passenger flow periods, to expedite passenger evacuation, subway stops are often limited to tens of seconds. The cumbersome operation of traditional webbing wheelchair restraint devices can easily delay disembarkation and cause passengers to miss their stops. Furthermore, due to the elastic deformation properties of the webbing material, acceleration, deceleration, and turns during vehicle movement can easily cause wheelchair displacement, posing a safety hazard. Therefore, a more stable, safer, and easier-to-operate wheelchair restraint device for subways is needed. Utility Model Content
[0004] The purpose of this utility model is to limit the wheelchair's hub between the limiting protrusion and the fixing component through the cooperation of the limiting component, the fixing component, and the automatic reset turntable, and to provide a handrail, thereby improving the stability of the fixing effect and the convenience of the fixing operation. This solves the problems in the background art where the traditional webbing structure has cumbersome operation steps that easily delay getting off the vehicle, and the elastic deformation characteristics of the webbing material itself make the wheelchair prone to displacement due to acceleration, deceleration, and turning of the vehicle, posing a safety hazard.
[0005] The specific technical solution of this utility model is as follows:
[0006] A wheelchair restraint for subway use includes a fixing component. Limiting mechanisms are connected to both sides of the fixing component. Each limiting mechanism includes a limiting member with a limiting protrusion on one side. The limiting protrusions on both sides of the fixing component are oppositely positioned. Mounting components are located above and below the limiting members, and are connected to the fixing component. The limiting member and the mounting components are connected via an automatic reset turntable. Sliding holes are located on the upper surface of the fixing component near both sides. Guide rods are slidably connected to the sliding holes. A crossbar is connected to the top of both guide rods. A U-shaped rod is connected to the bottom of the guide rod. The top of one leg of the U-shaped rod is connected to the bottom of the guide rod, and the other leg of the U-shaped rod is located in front of the limiting mechanism. The guide rod is elastically connected to the fixing component.
[0007] Furthermore, the fasteners include a front plate and a rear plate. Several mounting through holes are provided on the front plate and the rear plate. The front plate and the rear plate are assembled and installed by the cooperation of the mounting through holes and mounting bolts. The rear surface of the front plate and the front surface of the rear plate are provided with semi-circular through grooves vertically opposite each other.
[0008] Furthermore, the front facade of the front panel has a concave arc surface.
[0009] Furthermore, a positioning element is fixedly sleeved on the guide rod. The positioning element is circular, and a spring is fixedly connected to the lower surface of the positioning element. The spring is sleeved on the guide rod.
[0010] Furthermore, a buffer sleeve is fitted onto the crossbar.
[0011] Furthermore, the protruding end of the limiting protrusion is an arc surface.
[0012] Furthermore, when the limiting protrusions on both sides of the fixing member are stationary, the arc apex of the two protrusion ends fit together.
[0013] Furthermore, the automatic reset turntable is a 90° left and right automatic return turntable.
[0014] Furthermore, the limiting component and the mounting component are respectively provided with assembly through holes two, and the limiting component and the mounting component are connected to the automatic reset turntable through the assembly through holes two and the assembly bolts two.
[0015] Furthermore, the fastener has slots on both sides that are compatible with the mounting component. The slots have mounting holes on the inner side, and the mounting component has a third mounting through hole that matches the mounting hole on the outer side. The limiting mechanism is connected to the fastener through the cooperation of the mounting hole, the third mounting through hole, and the third mounting bolt.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] Once the wheelchair enters the subway car, the wheelchair user aligns the wheel hub between the two limiting members and moves the wheelchair forward until the wheel hub enters the gap between the limiting member and the fixing member. At this point, the limiting member resets under the action of the automatic reset turntable and restricts the wheel hub within the gap between the limiting member and the fixing member through the limiting protrusion, preventing the wheelchair from shifting. The wheelchair user then holds onto the crossbar to further increase stability and prevent swaying, thus improving passenger safety. When the subway stops and the user needs to get off, the wheelchair user simply presses down on the crossbar. The U-shaped bar, located on the front side of the limiting mechanism, moves downward to avoid the limiting member, allowing the wheelchair user to move the wheel hub out of the gap between the limiting member and the fixing member, thus releasing the wheelchair from its fixed position. The operation is simple, convenient, and efficient. Attached Figure Description
[0018] Figure 1This is a three-dimensional structural diagram of an embodiment of the present utility model;
[0019] Figure 2 This is an exploded view of the assembly of the fixing component and the limiting mechanism in the embodiment of this utility model;
[0020] Figure 3 This is an exploded view of the assembly of the limiting component, the automatic reset turntable, and the mounting component in this embodiment of the present invention;
[0021] Figure 4 This is a three-dimensional structural diagram of the guide rod in an embodiment of the present utility model;
[0022] Figure label:
[0023] 1. Fastener; 11. Sliding hole; 12. Front upright plate; 121. Concave arc surface; 13. Rear upright plate; 14. Slot; 15. Assembly through hole one;
[0024] 2. Limiting mechanism; 21. Limiting component; 211. Limiting protrusion; 22. Mounting component; 221. Assembly through hole three; 23. Automatic reset turntable; 24. Assembly through hole two;
[0025] 3. Guide rod; 31. Crossbar; 311. Buffer sleeve; 32. U-shaped rod; 33. Positioning component; 34. Spring. Detailed Implementation
[0026] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] See Figures 1 to 4This embodiment discloses a wheelchair restraint for subway use, including a fixing member 1 with a rectangular cross-section. The fixing member 1 is installed on the wall of a subway car. Limiting mechanisms 2 are connected to both sides of the fixing member 1. The limiting mechanism 2 includes a limiting member 21 with a rectangular cross-section. A limiting protrusion 211 is provided on one side of the limiting member 21, forming a gap between the limiting protrusion 211 and the fixing member 1. The limiting protrusions 211 of the limiting members 21 on both sides of the fixing member 1 are arranged opposite to each other. Mounting members 22 are provided above and below the limiting members 21, respectively, and the mounting members 22 are connected to the fixing member 1. The limiting member 21 and the mounting members 22 are connected to the fixing member 1. The two components are connected by an automatic reset turntable 23. The limiting component 21 rotates forward and backward and resets via the automatic reset turntable 23. The upper surface of the fixing component 1 has sliding holes 11 near both sides. Guide rods 3 are slidably connected to the sliding holes 11. The tops of the two guide rods 3 are connected to a crossbar 31. The bottom of the guide rods 3 is connected to a U-shaped rod 32. The top of one leg of the U-shaped rod 32 is connected to the bottom of the guide rod 3. The other leg of the U-shaped rod 32 is located in front of the limiting mechanism 2, which can limit the forward rotation of the limiting protrusion 211 and prevent the wheelchair hub from automatically disengaging from the limiting protrusion 211 and the fixing component 1 during shaking. The guide rod 3 is elastically connected to the fixing part 1. When the wheelchair user presses the crossbar 31, the crossbar 31 automatically resets through the elastic connection with the fixing part 1. When the wheelchair enters the subway car, the wheelchair user aligns the wheel hub with the position between the two limiting protrusions 211 and moves the wheelchair forward until the wheel hub enters the gap between the limiting part 21 and the fixing part 1. At this time, the limiting part 21 resets under the action of the automatic reset turntable 23. Because the U-shaped rod 32 is located on the front side of the limiting mechanism 2, the rod leg restricts the counter-rotation of the automatic reset turntable 23. Therefore, the limiting protrusion 211 restricts the wheel hub in the gap between the limiting member 21 and the fixing member 1, preventing the wheelchair from shifting. At this time, the wheelchair user holds the crossbar 31 with his hand, which further increases his stability, prevents swaying, and reduces safety hazards. When the subway stops and the user needs to get off, the wheelchair user only needs to press down on the crossbar 31 with his hand. At this time, the U-shaped bar 32, located on the front side of the limiting mechanism 2, moves down to avoid the limiting member 21. The wheelchair user drives the wheel hub out of the gap between the limiting member 21 and the fixing member 1, which releases the wheelchair from the fixed state. The operation is simple, convenient and efficient.
[0029] The fastener 1 includes a front upright plate 12 and a rear upright plate 13. Several mounting through holes 15 are provided on the front upright plate 12 and the rear upright plate 13. The front end of the mounting through hole 15 on the front upright plate 12 is provided with a countersunk hole. The front upright plate 12 and the rear upright plate 13 are assembled and installed by the cooperation of the mounting through holes 15 and mounting bolts 1, and are fixedly installed on the wall of the subway car. The rear upright surface of the front upright plate 12 and the front upright surface of the rear upright plate 13 are provided with semi-circular through grooves vertically opposite to each other. After the front upright plate 12 and the rear upright plate 13 are fitted together, the semi-circular through grooves on the front upright plate 12 and the rear upright plate 13 form sliding holes 11.
[0030] The front upright plate 12 has a concave arc surface 121 on its front surface. When the wheelchair hub enters the gap between the limiting member 21 and the fixing member 1, the concave arc surface 121 plays a role in avoiding the wheelchair hub. After the wheelchair hub is fully inserted into the gap, the limiting protrusion 211 can be released from the wheelchair hub's pushing force and reset under the action of the automatic reset turntable 23. This prevents the limiting protrusion 211 from being incompletely reset, which could cause the wheelchair to easily come off the wheelchair fixing device during shaking and result in a safety accident.
[0031] A positioning element 33 is fixedly sleeved on the guide rod 3. The positioning element 33 is circular. A spring 34 is fixedly connected to the lower surface of the positioning element 33. The spring 34 is sleeved on the guide rod 3. The guide rod 3 is elastically connected to the fixing element 1 through the spring 34.
[0032] A cushioning sleeve 311 is fitted onto the crossbar 31. To further optimize the design, the cushioning sleeve 311 is made of foam material, which increases the comfort of hand support.
[0033] The protruding end of the limiting protrusion 211 is an arc surface. When the wheelchair hub pushes the limiting protrusion 211, the arc surface can reduce friction and resistance, making the operation of fixing and disengaging the wheelchair smoother.
[0034] When the limiting protrusions 211 located on both sides of the fixing member 1 are stationary, the arc tops of the two protrusion ends fit together, which can better fix the wheelchair hub in the gap between the limiting member 21 and the fixing member 1.
[0035] The automatic reset turntable 23 is a 90° left and right automatic return turntable with automatic return function in both forward and reverse directions, so that the limiting member 21 can automatically return to its original position after the wheelchair is fixed or detached.
[0036] The limiting member 21 and the mounting member 22 are respectively provided with assembly through holes 24. The limiting member 21 and the mounting member 22 are connected to the automatic reset turntable 23 through the assembly through holes 24 and the assembly bolts 2. In this embodiment, the automatic reset turntable 23 is installed on the upper surface and the lower surface of the limiting member 21. The mounting member 22 is installed on the upper surface of the automatic reset turntable 23 located on the upper part of the limiting member 21, and the mounting member 22 is also installed on the lower surface of the automatic reset turntable 23 located on the lower part of the limiting member 21.
[0037] The fastener 1 has slots 14 on both sides that are adapted to the mounting part 22. The inner side of the slot 14 has an assembly hole. The outer side of the mounting part 22 has an assembly through hole 221 that matches the assembly hole. The limiting mechanism 2 is connected to the fastener 1 through the cooperation of the assembly hole, the assembly through hole 221 and the assembly bolt.
[0038] Working principle: When the wheelchair enters the subway car, the wheelchair user aligns the wheel hub between the two limiting protrusions 211 and moves the wheelchair forward until the wheel hub enters the gap between the limiting member 21 and the fixing member 1. At this time, the limiting member 21 is reset by the action of the automatic reset turntable 23. Since the U-shaped rod 32 is located on the front side of the limiting mechanism 2 and restricts the automatic reset turntable 23 from rotating forward, the limiting protrusions 211 restrict the wheel hub in the gap between the limiting member 21 and the fixing member 1, preventing the wheelchair from shifting. At this time, the wheelchair user holds the crossbar 31 with his hand to further increase his stability, prevent swaying, and improve the safety of riding the train. When the subway stops and the user needs to get off, the wheelchair user only needs to press down on the crossbar 31 with his hand. At this time, the U-shaped rod 32 is located on the front side of the limiting mechanism 2 and moves down to avoid the limiting member 21. The wheelchair user drives the wheel hub out of the gap between the limiting member 21 and the fixing member 1, thus releasing the wheelchair from its fixed state. The operation is simple, convenient and efficient.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A wheelchair restraint for subway use, characterized in that: The device includes a fixing component (1), with limiting mechanisms (2) connected to both sides of the fixing component (1). The limiting mechanism (2) includes a limiting component (21), with a limiting protrusion (211) on one side of the limiting component (21). The limiting protrusions (211) of the limiting components (21) on both sides of the fixing component (1) are arranged opposite to each other. Mounting components (22) are provided above and below the limiting components (21), and the mounting components (22) are connected to the fixing component (1). The limiting components (21) and the mounting components (22) are connected by an automatic reset mechanism. The plate (23) is connected; the upper surface of the fixing part (1) is provided with sliding holes (11) near the two sides, and the sliding holes (11) are slidably connected to the guide rods (3). The top of the two guide rods (3) are connected to a crossbar (31). The bottom of the guide rods (3) is connected to a U-shaped rod (32). The top of one leg of the U-shaped rod (32) is connected to the bottom of the guide rod (3), and the other leg of the U-shaped rod (32) is located in front of the limiting mechanism (2). The guide rod (3) is elastically connected to the fixing part (1).
2. The wheelchair restraint for subway use according to claim 1, characterized in that, The fastener (1) includes a front plate (12) and a rear plate (13). Several mounting through holes (15) are provided on the front plate (12) and the rear plate (13). The front plate (12) and the rear plate (13) are assembled and installed by the cooperation of the mounting through holes (15) and the mounting bolts. The rear surface of the front plate (12) and the front surface of the rear plate (13) are provided with semi-circular through grooves in the vertical direction.
3. The wheelchair restraint for subway use according to claim 2, characterized in that, The front facade of the front panel (12) has a concave arc surface (121).
4. The wheelchair restraint for subway use according to claim 1, characterized in that, A positioning element (33) is fixedly sleeved on the guide rod (3). The positioning element (33) is circular. A spring (34) is fixedly connected to the lower surface of the positioning element (33). The spring (34) is sleeved on the guide rod (3).
5. The wheelchair restraint for subway use according to claim 1, characterized in that, A buffer sleeve (311) is fitted on the crossbar (31).
6. The wheelchair restraint for subway use according to claim 1, characterized in that, The protruding end of the limiting protrusion (211) is a circular arc surface.
7. The wheelchair restraint for subway use according to claim 6, characterized in that, When the limiting protrusions (211) located on both sides of the fixing member (1) are stationary, the arc tops of the two protrusion end arc surfaces are in contact.
8. The wheelchair restraint for subway use according to claim 1, characterized in that, The automatic reset turntable (23) is a 90° left and right automatic return turntable.
9. The wheelchair restraint for subway use according to claim 1, characterized in that, The limiting part (21) and the mounting part (22) are respectively provided with assembly through holes two (24). The limiting part (21) and the mounting part (22) are connected to the automatic reset turntable (23) through the cooperation of the assembly through holes two (24) and the assembly bolts two.
10. The wheelchair restraint for subway use according to claim 1, characterized in that, The fastener (1) has slots (14) on both sides that are compatible with the mounting component (22). The inner side of the slot (14) has an assembly hole, and the outer side of the mounting component (22) has an assembly through hole (221) that is compatible with the assembly hole. The limiting mechanism (2) is connected to the fastener (1) through the cooperation of the assembly hole, the assembly through hole (221) and the assembly bolt.