TWM655457U - Mobile vehicle front wheel steering positioning mechanism - Google Patents

Abstract

The invention relates to a front wheel steering positioning mechanism for a mobile vehicle, which mainly comprises a front wheel on a front fork assembly of a mobile vehicle, an arc-shaped limiting hole on the front fork, a steering fixing seat attached to the front wheel assembly, a steering positioning plate in the steering fixing seat to correspond to the position of the arc-shaped limiting hole, and a latch on the steering fixing seat to be inserted into the insertion hole of the steering positioning plate. Thus, the steering positioning plate can be operated to contact the arc-shaped limiting hole of the front fork to different degrees according to the needs of use, so that the front wheel of the mobile vehicle can be positioned at different steering angles such as 360 degrees, 90 degrees and 0 degrees, thereby improving the safety and convenience of the user when controlling the mobile vehicle.

Description

Mobile vehicle front wheel steering positioning mechanism

This invention relates to the field of mobile vehicle technology, and in particular to a front wheel steering positioning mechanism for a mobile vehicle.

Generally, a general cargo cart, wheelchair, dining cart, baby stroller, pet stroller or walker is equipped with wheels at the front and rear of the frame, and the front wheels can be rotated to change the direction of travel. Since the front wheels of such mobile vehicles can usually rotate 360 degrees to control the direction of travel, however, in actual use, it is found that the directions of the front two wheels are not consistent at the beginning, and when pushing, Often, the kaka cannot be moved and needs to be pulled back a distance before it can be pushed forward smoothly. If the elderly or people whose lower limb physiological functions have declined due to illness or injury need to use a rollator or other mobile vehicle to assist them in standing or walking, it will be more difficult for users with weak bodies and poor control ability to use the rollator. If the control is not proper, the rollator may overturn or the user may fall due to unstable center of gravity.

The reason is that the creator, in view of the fact that existing mobility vehicles such as walkers still have the above-mentioned deficiencies when used for turning, has developed this creation with the assistance of his many years of manufacturing and design experience and knowledge in related fields and after much ingenuity.

This invention is about a front wheel steering positioning mechanism for a mobile vehicle, and its main purpose is to provide a mechanism that can perform several different steering angle positioning on the front wheels of the mobile vehicle according to the needs of use, so as to provide a convenient and safe mechanism for controlling the mobile vehicle.

In order to achieve the above implementation objectives, the present inventors have developed the following mobile vehicle front wheel steering positioning mechanism, which includes:

A vehicle frame is provided with at least one front wheel assembly at the front side of the vehicle frame, and the front wheel assembly is assembled with a rotating shaft of a front fork, and the rotating shaft of the front fork is connected with a fork shoulder of the front fork, and a fork leg is connected below the fork shoulder, and a front wheel is assembled on the fork leg of the front fork, and an arc-shaped limiting hole is provided on the fork shoulder of the front fork, and the arc-shaped limiting hole forms a limiting angle;

A turning fixing seat is arranged outside the front wheel assembly portion, and an arc-shaped through hole is longitudinally passed through the turning fixing seat, and the arc-shaped through hole corresponds to the shape and position of the arc-shaped limiting hole of the front fork, and an assembly hole is transversely arranged on the turning fixing seat to communicate with the arc-shaped through hole, and a latch is arranged on the assembly hole;

A steering positioning plate is arranged correspondingly in the arc-shaped through hole of the steering fixing seat, and a plurality of insertion holes are arranged at longitudinal intervals along the steering positioning plate. The latch of the steering fixing seat is inserted correspondingly to one of the insertion holes of the steering positioning plate. A protrusion is arranged at the bottom end of the steering positioning plate. The steering positioning plate and its protrusion are movably inserted or not inserted into the arc-shaped limiting hole of the front fork.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, a longitudinal guide groove is respectively provided at two sides of the arc-shaped through hole of the steering fixing seat, and a guide block is respectively provided at two sides of the steering positioning plate to correspond to the guide grooves at two sides of the arc-shaped through hole of the steering fixing seat.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, the steering positioning plate is provided with a stopper at its upper end.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, the steering positioning plate is provided with a number of marking lines at intervals above a number of sockets.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, the plurality of sockets of the steering positioning plate are provided with a first socket, a second socket and a third socket in sequence from top to bottom.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, the steering positioning plate is provided with a 0 degree marking line, a 90 degree marking line and a 360 degree marking line in order from top to bottom above the first plug hole.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, the limiting angle of the arc-shaped limiting hole provided on the fork shoulder of the front fork of the vehicle frame is 90 degrees.

In the front wheel steering positioning mechanism of the mobile vehicle as described above, the latch is a spring latch.

Thereby, when it is used, the steering positioning plate can be operated to make different degrees of contact with the arc-shaped limiting hole of the front fork according to the needs of use, thereby producing several different steering angle positioning effects such as 360 degrees, 90 degrees and 0 degrees for the front wheel, thereby improving the convenience and safety of the user when controlling the mobile vehicle.

In order to make the technical means of this creation and the effects it can achieve more complete and clear disclosure, the following is a detailed description. Please also refer to the disclosed diagrams and figure numbers:

First, please refer to the first to third figures, which are the front wheel steering positioning mechanism of the mobile vehicle of this invention, which mainly includes:

A vehicle frame (1) is provided with at least one front wheel assembly (11) at the front side of the vehicle frame (1), and at least one bearing (112) is provided in a tube hole (111) of the sleeve-shaped front wheel assembly (11) to be rotatably assembled with a rotating shaft (121) of a front fork (12). The rotating shaft (121) of the front fork (12) is connected to a fork shoulder (122) of the front fork (12), and the fork shoulder (122) of the front fork (12) is provided with a rotating shaft (121) of the front fork (12). A fork leg (123) is connected below the front fork (122), and a front wheel (13) is assembled on the fork leg (123) of the front fork (12), and an arc-shaped limiting hole (124) is provided on the fork shoulder (122) of the front fork (12). Here, the arc-shaped limiting hole (124) is used to form a 90-degree limiting angle for illustration, and the limiting angle formed by the arc-shaped limiting hole (124) can be designed with different angles according to needs;

A turning fixed seat (2) is arranged on the outer side of the front wheel assembly part (11), and an arc-shaped through hole (21) is longitudinally penetrated along the turning fixed seat (2) to correspond to the shape and position of the arc-shaped limiting hole (124) of the front fork (12), and a longitudinal guide groove (211) is respectively arranged at two sides of the arc-shaped through hole (21), and an assembly hole (22) is transversely arranged on the turning fixed seat (2) to communicate with the arc-shaped through hole (21), and a latch (23) is assembled in the assembly hole (22), and the latch (23) can be a spring latch;

A turning positioning plate (3) is an arc-shaped plate body, which is arranged in correspondence with the arc-shaped through hole (21) of the turning fixing seat (2), and a guide block (31) is respectively arranged at two sides of the turning positioning plate (3) to be connected with the guide groove (211) arranged at two sides of the arc-shaped through hole (21), and a plurality of plug holes (32) are arranged at intervals along the longitudinal direction of the turning positioning plate (3). The main embodiment of the invention is to arrange a first plug hole (321), a second plug hole (322) and a third plug hole (323) in sequence along the longitudinal direction of the turning positioning plate (3) from top to bottom, and make the turning fixing seat (2) The pin (23) of the fixed seat (2) is correspondingly inserted into any insertion hole (32) of the turning positioning plate (3). A protrusion (33) is provided at the bottom end of the turning positioning plate (3), and a stopper (34) is formed at the upper end of the turning positioning plate (3). A number mark line (35) is provided between the stopper (34) at the upper end of the turning positioning plate (3) and the first insertion hole (321). Please refer to the fourth to sixth figures. The number mark lines (35) are 0 degree mark line (351), 90 degree mark line (352) and 360 degree mark line (353) from top to bottom.

Accordingly, please refer to the fourth figure. When the user wants to make the front wheel (13) of the mobile vehicle such as the walker maintain a 360-degree rotation, the pin (23) can be inserted into the third plug hole (323) of the steering positioning plate (3). At this time, the steering positioning plate (3) does not extend out of the arc-shaped through hole (21) of the steering fixing seat (2) and does not contact the arc-shaped limit hole (124) of the front fork (12), so that the steering angle of the front wheel (13) is maintained at the existing setting of 360 degrees. In addition, the 360-degree marking line (353) shown on the steering positioning plate (3) is located at the upper edge of the arc-shaped through hole (21) of the steering fixing seat (2). Therefore, the user can clearly know the steering positioning adjustment state of the front wheel (13) from the 360-degree marking line (353).

Furthermore, when the user wants to limit the steering angle of the front wheel (13), the plugging of the latch (23) and the third plug hole (323) of the steering positioning plate (3) is released. Please refer to the fifth figure again, and then the steering positioning plate (3) is pushed downward so that the protrusion (33) provided at the bottom end of the steering positioning plate (3) is inserted into the arc-shaped limiting hole (124) of the front fork (12). At this time, the 90-degree marking line (352) shown on the steering positioning plate (3) is exactly located at the steering fixing seat (2 ) at the upper edge of the arc-shaped through hole (21) so that the user can know that the existing front wheel (13) has been adjusted to the desired turning position, and then the latch (23) is inserted into the second insertion hole (322) of the turning positioning plate (3) to fix the state in which the protrusion (33) of the turning positioning plate (3) is inserted into the arc-shaped limiting hole (124). In this way, the two ends of the protrusion (33) and the arc-shaped limiting hole (124) are designed to abut against each other, so that the turning range of the front wheel (13) can be limited to the range of 90 degrees.

When the user wants to make the front wheel (13) unable to turn, the latch (23) is released from the second insertion hole (322) of the steering positioning plate (3), and the steering positioning plate (3) is further pushed downward so that the arc-shaped steering positioning plate (3) is completely inserted into the arc-shaped limiting hole (124) of the front fork (12). At this time, the 0 degree mark (351) of the steering positioning plate (3) is ) is located at the upper edge of the arc-shaped through hole (21) of the steering fixing seat (2), so that the user can know that the front wheel (13) has been adjusted to the 0-degree steering position. Then the user inserts the latch (23) into the first insertion hole (321) of the steering positioning plate (3) to fix the arc-shaped steering positioning plate (3) to be completely inserted into the arc-shaped limiting hole (124), so as to limit the front wheel (13) from being able to turn and only move in a straight line.

Thus, by utilizing the design of the front wheel steering positioning mechanism of the invention, the steering angle of the front wheel (13) of the mobile vehicle such as a walker can be limited according to the user's physical condition and personal needs for the control ability of the mobile vehicle such as a walker, so as to provide the user with safety and convenience when controlling the mobile vehicle such as a walker, and avoid the danger of the walker overturning or the user falling due to unstable center of gravity.

The aforementioned embodiments or drawings do not limit the implementation modes of the present invention. Any appropriate changes or modifications made by a person having ordinary knowledge in the relevant technical field should be deemed to be within the patent scope of the present invention.

From the above structure and implementation method, it can be seen that this invention has the following advantages:

1. The front wheel steering positioning mechanism of the mobile vehicle of this invention can be used to position the front wheel at several different steering angles as required, thereby improving the convenience and safety of the user when controlling the mobile vehicle such as the walker.

2. The front wheel steering positioning mechanism of the mobile vehicle of this invention is provided with a number of marking lines at intervals on the steering positioning plate, so that the user can clearly know the steering positioning adjustment status of the front wheel from the angle marked by the marking lines, thereby improving the convenience of the user in adjusting the steering angle of the front wheel.

In summary, the embodiments of this invention can achieve the expected effects, and the specific structure disclosed is not only not seen in similar products, but also has not been disclosed before the application. It fully complies with the provisions and requirements of the Patent Law. Therefore, we have filed an application for a new patent in accordance with the law and sincerely request your review and approval of the patent. I would really appreciate the convenience.

1: Carrier frame 11: Front wheel assembly 111: Cylinder hole 112: Bearing 12: Front fork 121: Rotating shaft 122: Fork crown 123: Fork leg 124: Arc stop hole 13: Front wheel 2: Steering fixing seat 21: Arc through hole 211: Guide groove 22: Assembly hole 23: Latch 3: Steering positioning plate 31: Guide block 32: Socket 321: First socket 322: Second socket 323: Third socket 33: Boss 34: Stopper 35: Marking line 351: 0 degree marking line 352: 90 degree marking line 353: 360 degree marking line

Figure 1: 3D exploded view of this creation Figure 2: Front cross-sectional view of this creation Figure 3: Top cross-sectional view of this creation Figure 4: Usage state diagram of this creation (I) Figure 5: Usage state diagram of this creation (II) Figure 6: Usage state diagram of this creation (III)

1: Carrier frame

11:Front wheel assembly

111: Barrel hole

12: Front fork

121: Rotating axis

122: Fork shoulder

123: Cross-legged

124: Arc-shaped limit hole

13:Front wheel

2: Turn to the fixed seat

21: Arc-shaped through hole

211: Guide groove

22: Assembly hole

23: Latch

3: Turning positioning plate

31: Guide block

32: Socket

321: First socket

322: Second socket

323: Third socket

33: convex column

34: Stopper

35: Marking line

Claims (8)

A front wheel steering positioning mechanism for a mobile vehicle comprises: A vehicle frame, wherein at least one front wheel assembly is provided on the front side of the vehicle frame, and the front wheel assembly is assembled with a rotating shaft of a front fork, and the rotating shaft of the front fork is connected with the fork shoulder of the front fork, and a fork leg is connected below the fork shoulder, and a front wheel is assembled on the fork leg of the front fork, and an arc-shaped limiting hole is provided on the fork shoulder of the front fork, and the arc-shaped limiting hole forms a limiting angle; A steering fixing seat is arranged on the outer side of the front wheel assembly part, and an arc-shaped through hole is longitudinally penetrated along the steering fixing seat, and the arc-shaped through hole corresponds to the shape and position of the arc-shaped limiting hole of the front fork. An assembly hole is transversely arranged on the steering fixing seat to communicate with the arc-shaped through hole, and a latch is arranged on the assembly hole; A steering positioning plate is arranged correspondingly in the arc-shaped through hole of the steering fixing seat, and a plurality of plug holes are arranged longitudinally along the steering positioning plate. The latch of the steering fixing seat is inserted correspondingly to one of the plug holes of the steering positioning plate. A convex column is arranged at the bottom end of the steering positioning plate. The steering positioning plate and its convex column are movably inserted or not inserted into the arc-shaped limiting hole of the front fork. As described in claim 1, the front wheel steering positioning mechanism of the mobile vehicle has a longitudinal guide groove on both sides of the arc-shaped through hole of the steering fixing seat, and a guide block is provided on both sides of the steering positioning plate to correspond to the guide grooves on both sides of the arc-shaped through hole of the steering fixing seat. The front wheel steering positioning mechanism of a mobile vehicle as described in claim 1, wherein the steering positioning plate is provided with a stop portion at its upper end. A front wheel steering positioning mechanism for a mobile vehicle as described in claim 1, wherein the steering positioning plate is provided with a number of marking lines spaced apart above a number of its sockets. As described in claim 1, the front wheel steering positioning mechanism of the mobile vehicle, wherein the plurality of sockets of the steering positioning plate are provided with a first socket, a second socket and a third socket in sequence from top to bottom. The front wheel steering positioning mechanism of the mobile vehicle as described in claim 5, wherein the steering positioning plate is provided with a 0 degree marking line, a 90 degree marking line and a 360 degree marking line in sequence from top to bottom above the first socket. The front wheel steering positioning mechanism of the mobile vehicle as described in claim 1, wherein the limiting angle of the arc-shaped limiting hole provided on the fork shoulder of the front fork of the vehicle frame is 90 degrees. A front wheel steering positioning mechanism for a mobile vehicle as described in claim 1, wherein the latch is a spring latch.

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