Wheelchair trailer head foot support structure
By designing a wheelchair trailer head support structure, and utilizing an L-shaped rocker arm and elastic storage components, the trailer head can automatically stand up and fold, solving the problem that external electric wheelchair trailer heads cannot stand stably when detached, thus improving operational convenience and practicality.
Patent Information
- Application Number
- CN202423216945.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The trailer head of existing external electric wheelchairs cannot stand stably when detached, causing inconvenience and affecting the user's ease of operation when connecting or storing them.
A wheelchair trailer head support structure was designed, which adopts an L-shaped rocker arm and a spring storage component. Through the pivot connection between the L-shaped rocker arm and the mounting base and the cooperation of the spring storage component, the trailer head can automatically stand up and retract in the separated state, ensuring that the trailer head can be stably supported on the ground when separated.
It improves the ease of operation and practicality of the trailer head in the separated state, ensuring that the trailer head can stand up on its own when separated and automatically retracts when connected to the wheelchair body without affecting the movement of the wheelchair, thus improving the user's ease of operation and practicality.
Smart Images
Figure CN223731637U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a wheelchair trailer head foot prop structure mainly applied to the wheelchair technical field. BACKGROUND
[0002] As an action aid, a wheelchair is used for patients with lower limb weakness or injury who are inconvenient to move. The traditional wheelchair mainly relies on the user to push the two side wheels or is pushed by the caregiver, so that the wheelchair moves. Since it mainly relies on manpower, it is very laborious, so the range of the wheelchair that can be moved is limited. With the research and progress of medical equipment, the traditional manual wheelchair driven by manpower has evolved into an electric wheelchair with its own power source. Although the electric wheelchair has the advantages of labor-saving and long travel distance, it uses electric drive, and in addition to the drive structure, it also needs an external battery. Therefore, the overall weight is heavy and the selling price is high. When it enters public places and indoor spaces, it is less convenient, causing great inconvenience to the user. Moreover, the user will rely too much on the electric wheelchair and lose the opportunity to exercise. When the motor power is insufficient, the electric wheelchair loses its function.
[0003] Therefore, the industry has developed an external electric wheelchair composed of a wheelchair body and a trailer head. When there is no power, indoors or short distance movement, the wheelchair body and the trailer head can be separated. The user can operate the wheelchair body in a traditional way through manpower, and the wheelchair body can be easily folded by the user in a separated state for storage with the separated trailer head in the vehicle for movement. When there is a long distance movement or labor-saving requirement, the trailer head can be connected to the front of the wheelchair body to move the wheelchair body using the trailer head, which has the effect of labor-saving and fast movement.
[0004] However, the trailer head of the existing external electric wheelchair cannot stand stably on the ground when it is separated, so that the user is extremely inconvenient whether before connecting the trailer head or when storing or placing the trailer head, and needs to be further improved. INVENTION CONTENTS
[0005] The technical problem to be solved by the utility model is to provide a wheelchair trailer head foot prop structure that can stand stably without falling when separated, can improve the operation convenience of the user when connecting the wheelchair body or storing, and at the same time, the trailer head can stand by itself when separated and automatically fold when connected to the wheelchair body, without affecting the movement of the wheelchair, effectively improving its practicality and overcoming the shortcomings of the prior art.
[0006] To solve the above technical problems, the utility model discloses the following technical scheme: a wheelchair trailer head foot support structure is applied to a wheelchair main body trailer head, which is composed of a handlebar vertical rod with a wheel body, and a mounting seat shaft sleeve is pivotally arranged on the handlebar vertical rod, the mounting seat shaft sleeve is provided with a mounting seat for selectively connecting the wheelchair main body, and a foot support structure is arranged on the mounting seat.
[0007] Preferably, the mounting seat is formed with a first lock hole penetrating through two side wall surfaces, and a hooking rod is arranged to penetrate through the two ends of the mounting seat wall surface, the mounting seat is formed with a lock catch groove, the lock catch groove is provided with a movable catch piece of a lock catch unit, the wheelchair main body is provided with a connecting extension rod, and the connecting extension rod is provided with a corresponding buckle cover of the mounting seat, the buckle cover is provided with side abutting pieces abutting against the two side wall surfaces of the mounting seat, the side abutting pieces are respectively provided with an opening forward inclined catch groove, and a lock catch rod corresponding to the lock catch groove is arranged between the side abutting pieces, so that the wheelchair main body can be selectively connected to the mounting seat of the trailer head by using the buckle cover.
[0008] Preferably, the foot support structure is composed of at least one L-shaped rocker arm pivotally arranged on the mounting seat, the L-shaped rocker arm is respectively provided with a ground supporting section and a bending section substantially perpendicular to the ground supporting section, and the L-shaped rocker arm is pivotally arranged on the mounting seat by using a support rod at the connection between the bending section and the ground supporting section, so that the L-shaped rocker arm can generate a rocker action by taking the support rod as a rotating support point; a spring storage member is arranged between the foot support structure and the trailer head, so that the foot support structure can generate a reset pre-tightening force for automatically approaching the trailer head, thereby ensuring that the foot support structure can automatically stand in a state of supporting the trailer head when no force is applied.
[0009] Preferably, the foot support structure is composed of two L-shaped rocker arms pivotally arranged on the two side wall surfaces of the mounting seat.
[0010] Preferably, the bending section of the L-shaped rocker arm is respectively formed with a pivot hole at the connection with the ground supporting section, the two side wall surfaces of the mounting seat are respectively formed with a second lock hole, the pivot hole of the L-shaped rocker arm is pivotally arranged in the second lock hole by using the support rod, and then the second lock hole is locked, so that the L-shaped rocker arm can generate a rocker action by taking the support rod as a rotating support point.
[0011] Preferably, the foot support structure is respectively formed with a third lock hole on the two side wall surfaces of the mounting seat, and a leaning rod is respectively locked in the third lock hole, so as to limit the L-shaped rocker arm when the L-shaped rocker arm is pushed and folded by the buckle cover.
[0012] Preferably, the spring storage member is provided with a hook piece on the mounting seat of the trailer head, the ground supporting section of the L-shaped rocker arm is provided with a hook rod, and a stretching spring is arranged between the hook piece and the hook rod, so that the foot support structure can generate a reset pre-tightening force for approaching the trailer head under the action of the stretching spring.
[0013] Preferably, the L-shaped jack of the foot prop structure is provided with a ground-contacting crossbar at the end corresponding to the ground, which can increase the contact area with the ground to improve the stability of the trailer head.
[0014] Preferably, the ground-contacting crossbar of the foot prop structure is provided with a roller on each side, which is pivotally arranged at the end of the ground-contacting crossbar by a shaft, so that the trailer head can move conveniently when standing on the foot prop structure.
[0015] The beneficial effects of the present application are as follows: through the above technical means, the wheelchair trailer head foot prop structure can utilize the foot prop structure, so that the L-shaped jack of the foot prop structure can generate a pushing effect when the wheelchair body is connected, so that the foot prop structure can be automatically folded upwards without affecting the movement of the wheelchair. When the trailer head is separated from the wheelchair body, the foot prop structure and the trailer head can be automatically reset by the elastic storage member, so that the trailer head can be supported and stably stand on the ground, effectively improving the operation convenience and practicality of the trailer head, further improving the added value and economic benefit.
[0016] The present application will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a perspective view of the wheelchair trailer head foot prop structure when the trailer head is connected.
[0018] Figure 2 is a perspective view of the wheelchair trailer head foot prop structure when the trailer head is separated.
[0019] Figure 3 is a side view of the wheelchair trailer head foot prop structure when the trailer head is connected.
[0020] Figure 4 is a side view of the wheelchair trailer head foot prop structure when the trailer head is separated.
[0021] Figure 5 is a perspective view of the wheelchair trailer head foot prop structure when the trailer head is separated. DETAILED DESCRIPTION
[0022] The wheelchair trailer head foot prop structure of the present application, like Figure 1 , Figure 2 and Figure 3As shown, the present application is a trailer head 10 applied to an external wheelchair, which is selectively connected to a wheelchair body 80 (only partial mechanism is disclosed), wherein the trailer head 10 is provided with a handle stem 11 having a wheel body 12, the handle stem 11 is pivotally provided with a mounting seat shaft sleeve 15 adjacent to the wheel body 12, the mounting seat shaft sleeve 15 is provided with a mounting seat 20 corresponding to the wheelchair body 80, the mounting seat 20 is formed with a first locking hole 21 penetrating through the two side wall surfaces at the front edge adjacent to the top end, for penetrating a hooking rod 22, and the hooking rod 22 is slightly penetrated out of the two side wall surfaces of the mounting seat 20 at both ends, the mounting seat 20 is formed with a locking slot 27 at the middle segment of the front side surface, the locking slot 27 is provided with a movable clamping piece 41 of a locking unit 40, wherein the hooking rod 22 of the mounting seat 20 and the movable clamping piece 41 in the locking slot 27 can be used to selectively clamp the wheelchair body 80, and the wheelchair body 80 is provided with a connecting rod 81, and the connecting rod 81 is provided with a clamping cover 82 corresponding to the mounting seat 20 at the front end, the clamping cover 82 is provided with side abutting pieces 83 abutting against the mounting seat 20 at both sides, and the side abutting pieces 83 at both sides of the clamping cover 82 are respectively provided with a slanting clamping slot 86 opening forward adjacent to the top end, for being clamped to the hooking rod 22 at both ends of the mounting seat 20, and the side abutting pieces 83 at both sides of the clamping cover 82 are provided with a locking rod 88 corresponding to the locking slot 27 between the middle segments, for selectively clamping the movable clamping piece 41 in the locking slot 27, so that the wheelchair body 80 can be selectively connected to the mounting seat 20 of the trailer head 10 by the clamping cover 82 of the connecting rod 81 (as shown in Figure 3 and Figure 4 ), the feature of the present application is that the mounting seat 20 of the trailer head 10 is provided with a supporting structure 30, so that the trailer head 10 can be selectively erected on the ground (as shown in Figure 4 and Figure 5 );
[0023] The foot prop structure 30 is composed of at least one L-shaped rocker 31 pivoted on the mounting base 20. The L-shaped rockers 31 are parallelly arranged on the two side walls of the mounting base 20. Each L-shaped rocker 31 has a ground supporting section 311 and a bending section 312 substantially perpendicular to the ground supporting section 311. The bending section 312 of each L-shaped rocker 31 is formed with a pivot hole 313 adjacent to the connecting position of the ground supporting section 311, so that the L-shaped rocker 31 can be pivoted on the pivot hole 313 to produce a seesaw action. The foot prop structure 30 is formed with a second locking hole 25 adjacent to the bottom end of each side wall of the mounting base 20. A rod 26 is pivoted on the pivot hole 313 of each L-shaped rocker 31 and locked in the second locking hole 25, so that the L-shaped rocker 31 can be pivoted on the rod 26 to produce a seesaw action. The foot prop structure 30 is formed with a third locking hole 23 in the middle of each side wall of the mounting base 20. A leaning rod 24 is locked in the third locking hole 23, so that the L-shaped rocker 31 can be limited when it is pushed by the buckle cover 82 to be folded. Figure 3
[0024] Furthermore, the foot prop structure 30 and the trailer head 10 are provided with a spring storage member 32, so that the foot prop structure 30 can produce a reset pre-force to automatically lean towards the trailer head 10, to ensure that the foot prop structure 30 can automatically stand to support the trailer head 10 when it is not under stress. The spring storage member 32 is provided with a hanging piece 28 on the mounting base 20 of the trailer head 10, and the ground supporting section 311 of the L-shaped rocker 31 is provided with a hook rod 33. A tension spring 34 is arranged between the hanging piece 28 and the hook rod 33, so that the foot prop structure 30 can produce a reset pre-force to lean towards the trailer head 10 under the action of the tension spring 34. According to some embodiments, the L-shaped rocker 31 of the foot prop structure 30 is provided with a ground contacting cross rod 35 at the end corresponding to the ground, which can increase the area of contact with the ground to improve the stability of the standing of the trailer head 10. According to some embodiments, the foot prop structure 30 can be provided with a roller 36 on each side. The roller 36 is pivoted on the two ends of the ground contacting cross rod 35 by a shaft 360, which can facilitate the movement of the trailer head 10 when it is supported and stood by the foot prop structure 30, thereby forming a wheelchair trailer head foot prop structure which can automatically reset and support the ground and stand stably on the ground.
[0025] As Figure 1 and Figure 2 As shown, in actual use, when the trailer head 10 is attached to the wheelchair body 80, the wheelchair body 80 is hooked to the two ends of the hook rod 22 and the locking groove 27 of the mounting base 20 by the oblique fastening groove 86 of the fastening cover 82 of the connecting extension rod 81 and the locking rod 88. The movable fastening piece 41 in the locking groove 27 allows for selective fastening, enabling the wheelchair body 80 to be selectively connected to the mounting base 20 of the trailer head 10 via the fastening cover 82 of the connecting extension rod 81. At this time, the side abutments 83 on both sides of the fastening cover 82 can push against the bent section 312 of the L-shaped rocker arm 31 of the foot support structure 30 (e.g., ...). Figure 3 As shown, the L-shaped rocker arm 31 is rotated around the support rod 26, causing the supporting section 311 of the L-shaped rocker arm 31 to lift off the ground and retract upwards, without affecting the movement of the trailer head 10 in pulling the wheelchair body 80.
[0026] For example Figure 4 and Figure 5 As shown, when the trailer head 10 separates from the wheelchair body 80, the oblique buckle groove 86 and the locking rod 88 of the fastening cover 82 of the wheelchair body 80 respectively disengage from the movable buckle piece 41 at both ends of the hook rod 22 of the mounting base 20 and in the locking groove 27. At this time, the bent section 312 of the L-shaped rocker arm 31 of the foot support structure 30 is no longer pushed by the side abutment piece 83 of the fastening cover 82 (as shown). Figure 4 As shown, the L-shaped rocker arm 31 is subjected to its own weight and the tension spring 34 of the elastic storage component 32, so that it can automatically return to the trailer head 10 with the support rod 26 as the rotation fulcrum. This allows the ground support section 311 of the L-shaped rocker arm 31 to stand upright with the ground-mounted crossbar 35 against the ground, which facilitates the operation of the trailer head 10.
[0027] As can be seen from the foregoing composition and usage instructions, this invention utilizes the foot support structure 30 provided on the trailer head 10, and the L-shaped rocker arm 31 of the foot support structure 30 can generate a pushing action through the wheelchair body 80 during connection, so that the foot support structure 30 can automatically retract upwards without affecting the movement of the wheelchair. When the trailer head 10 is separated from the wheelchair body 80, the foot support structure 30 and the trailer head 10 can automatically reset through the elastic storage member 32, so that the trailer head 10 can be supported and stand stably on the ground. This can improve the user's operational convenience when connecting or storing the wheelchair body 80, and has the function of allowing the trailer head 10 and the wheelchair body 80 to stand up or automatically retract when separated or connected, effectively improving its practicality.
Claims
1. A wheelchair trailer head and foot support structure for application to a trailer head of a wheelchair body, characterised in that: The trailer head is composed of a handlebar vertical rod with a wheel body, and a mounting seat shaft is pivotally arranged on the handlebar vertical rod, and the mounting seat shaft has a mounting seat for selectively connecting the wheelchair body, and a foot support structure is arranged on the mounting seat.
2. The wheelchair trailer headrest structure of claim 1, wherein: The mounting seat is formed with a first lock hole penetrating through two side wall surfaces, and a hooking rod is arranged to penetrate through the two ends of the mounting seat wall surface, and the mounting seat is formed with a lock catch groove, and the lock catch groove has a movable catch piece of a lock catch unit, and the wheelchair body has a connecting extension rod, and the connecting extension rod has a corresponding catch cover of the mounting seat, and the catch cover has side abutting pieces abutting against the two side wall surfaces of the mounting seat, and the side abutting pieces are respectively provided with an opening forward inclined catch groove, and a lock catch rod corresponding to the lock catch groove is arranged between the side abutting pieces, so that the wheelchair body can be selectively connected to the mounting seat of the trailer head by using the catch cover.
3. The wheelchair trailer headrest structure of claim 2, wherein: The foot support structure is composed of at least one L-shaped rocker lever pivotally arranged on the mounting seat, and the L-shaped rocker lever has a ground supporting section and a bending section substantially perpendicular to the ground supporting section, and the L-shaped rocker lever is pivotally arranged on the mounting seat by using a supporting rod at the connection between the bending section and the ground supporting section, so that the L-shaped rocker lever can generate a rocker lever action by using the supporting rod as a rotating support point; and a spring storage member is arranged between the foot support structure and the trailer head, so that the foot support structure can generate a reset pre-tightening force automatically approaching the trailer head, so as to ensure that the foot support structure can automatically present a state of supporting the trailer head when not under force.
4. The wheelchair trailer headrest structure of claim 3, wherein: The foot support structure is composed of two L-shaped rocker levers pivotally arranged on the two side wall surfaces of the mounting seat.
5. The wheelchair trailer headrest structure of claim 4, wherein: The bending section of the L-shaped rocker lever is formed with a pivot hole at the connection between the bending section and the ground supporting section, and the two side wall surfaces of the mounting seat are respectively formed with a second lock hole, so that the pivot hole of the L-shaped rocker lever is pivotally arranged on the second lock hole by using the supporting rod, and the L-shaped rocker lever can generate a rocker lever action by using the supporting rod as a rotating support point.
6. The wheelchair trailer headrest structure of claim 4, wherein: The foot support structure is formed with a third lock hole on the two side wall surfaces of the mounting seat, and a leaning rod is respectively arranged in the third lock hole, so as to limit the L-shaped rocker lever when the L-shaped rocker lever is pushed and folded by the catch cover.
7. The wheelchair trailer headrest structure of claim 4, wherein: The spring storage member is arranged with a hook piece on the mounting seat of the trailer head, and a hook rod is arranged between the ground supporting sections of the L-shaped rocker levers, and a stretching spring is arranged between the hook piece and the hook rod, so that the foot support structure can generate a reset pre-tightening force approaching the trailer head by the action of the stretching spring.
8. The wheelchair trailer headrest structure of claim 4, wherein: The L-shaped rocker lever of the foot support structure is correspondingly provided with a ground abutting cross rod at one end, so as to increase the area of the ground abutting cross rod contacting the ground, and to improve the stability of the trailer head standing.
9. The wheelchair trailer headrest structure of claim 8, wherein: The ground abutting cross rod of the foot support structure is respectively provided with a roller on the two sides, and the roller is pivotally arranged on the two ends of the ground abutting cross rod by using a wheel shaft, so as to facilitate the movement of the trailer head by using the roller of the foot support structure when supporting and standing.