WO2024066645A1

WO2024066645A1 - Bicycle steering structure and bicycle

Info

Publication number: WO2024066645A1
Application number: PCT/CN2023/105914
Authority: WO
Inventors: 夏世光
Original assignee: 上海趣童工坊企业管理有限公司
Priority date: 2022-09-27
Filing date: 2023-07-05
Publication date: 2024-04-04
Also published as: CN115352563A

Abstract

Disclosed in the present application are a bicycle steering structure (1) and a bicycle. In the bicycle steering structure (1), an end portion of either end of a first inhaul cable sleeve (13) is configured for fixed connection to a frame (100), an end portion of either end of a second inhaul cable sleeve (14) is configured for fixed connection to the frame (100), two ends of a first inhaul cable (11) are respectively fixedly connected to a first side of a front rotating shaft (201) and a first side of a rear rotating shaft (301), and two ends of a second inhaul cable (12) are respectively fixedly connected to a second side of the front rotating shaft (201) and a second side of the rear rotating shaft (301), so that the rear rotating shaft (301) can drive the front rotating shaft (201) to rotate synchronously.

Description

Bicycle steering structure and bicycle

This application claims priority to the Chinese patent application filed with the China Patent Office on September 27, 2022, with application number 202211182368.5, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the technical field of bicycles, for example, to a bicycle steering structure and a bicycle.

Background technique

Parent-child bicycles are usually equipped with two seats in the front and rear directions on the same frame, with the front and rear seats used for children and parents respectively. As children have poor control over bicycles and poor ability to predict danger, traditional parent-child bicycles are usually controlled by parents sitting in the rear seat.

In order to enable children sitting in the front seat to have a driving experience, the relevant technology provides a parent-child bicycle that controls the synchronous steering of the front and rear axles through a connecting rod or a cable, so that children can manipulate the steering of the bicycle while parents can also control the steering to avoid danger. For the solution of connecting the two axles through a connecting rod, the rotation of the connecting rod will collide with the child, and if the connecting rod is set in the frame, the frame will become bloated; for the solution of controlling the synchronous steering of the front and rear axles through a cable, the cable of the bicycle is connected to the handle of the rear handlebar, so the cable needs to be bent and turned at many places, resulting in a complex structure.

Summary of the invention

According to one aspect of the present application, the present application provides a bicycle steering structure to avoid the situation in the related art where the cable needs to be bent and turned at multiple locations, resulting in a complex structure.

The present application provides a bicycle steering structure, which is arranged on a bicycle frame, wherein the bicycle further comprises a front handlebar assembly and a rear handlebar assembly, wherein the front handlebar assembly comprises a front rotating shaft rotatably arranged on the frame and a front handlebar connected to the front rotating shaft, wherein the front rotating shaft is arranged to be connected to the front wheel of the bicycle, and the rear handlebar assembly comprises a rear rotating shaft rotatably arranged on the frame and a rear handlebar fixedly arranged on the rear rotating shaft;

The bicycle steering structure comprises:

The steering mechanism includes a first cable sleeve, a second cable sleeve, a first cable slidably inserted into the first cable sleeve, and a second cable slidably inserted into the second cable sleeve, the end portions of both ends of the first cable sleeve are respectively arranged to be fixedly connected to the frame, the end portions of both ends of the second cable sleeve are respectively arranged to be fixedly connected to the frame, the two ends of the first cable are respectively fixedly connected to the first side of the front rotating shaft and the first side of the rear rotating shaft, and the two ends of the second cable are respectively fixedly connected to the second side of the front rotating shaft and the second side of the rear rotating shaft, so that the rear rotating shaft can drive the front rotating shaft to rotate synchronously.

According to another aspect of the present application, a bicycle is provided, comprising the above-mentioned bicycle steering structure, and further comprising:

Frame;

A front handlebar assembly, comprising a front rotating shaft rotatably arranged on the frame and a front handlebar connected to the front rotating shaft;

A rear handlebar assembly, comprising a rear shaft rotatably arranged on the frame and a rear handlebar fixedly arranged on the rear shaft;

A front wheel, wherein the front rotating shaft is connected to the front wheel of the bicycle.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a bicycle in an embodiment of the present application;

Fig. 2 is an enlarged view of point A in Fig. 1;

FIG3 is a structural schematic diagram 1 of a steering mechanism in an embodiment of the present application;

FIG4 is a second structural schematic diagram of the steering mechanism in an embodiment of the present application;

FIG5 is a schematic diagram of the external structure of the front handlebar connection structure in an embodiment of the present application;

FIG6 is a schematic diagram of the internal structure of the front handlebar connection structure in an embodiment of the present application;

FIG7 is a schematic structural diagram of a front handlebar mounting member in an embodiment of the present application;

FIG8 is a schematic structural diagram of a front axle mounting member in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a bicycle in another embodiment of the present application.

In the figure:
100, frame; 101, main frame; 102, outer shell;
200, front handlebar assembly; 201, front rotating shaft; 202, front handlebar;
300, rear handlebar assembly; 301, rear rotating shaft; 302, rear handlebar;
400, front wheel;
500, front seat assembly;
600, rear seat assembly;
1. Steering mechanism; 11. First cable; 12. Second cable; 13. First cable sleeve; 14. Second cable sleeve;
15. Adjustment assembly; 151. First adjustment bolt; 152. Second adjustment bolt;
2. front handlebar connection structure; 21. front axle mounting piece; 211. insert block; 212. receiving groove; 22. front handlebar mounting piece;
221, groove; 23, elastic member;
3. Limiting component; 31. First limiting member; 32. Second limiting member.

Detailed ways

In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being "on" or "below" a second feature. The first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature is “below,” “below,” and “below” the second feature includes the first feature being directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

The present application provides a bicycle steering structure to avoid the situation in the related art where cables need to be bent and steered at multiple locations, resulting in a complex structure, and can be used in the field of bicycle technology.

1 to 8 , the bicycle steering structure is provided on a bicycle frame 100, and the bicycle further comprises a front handlebar assembly 200 and a rear handlebar assembly 300. The front handlebar assembly 200 comprises a front rotating shaft 201 rotatably provided on the frame 100 and a front handlebar 202 connected to the front rotating shaft 201, and the front rotating shaft 201 is provided to be connected to the front wheel 400 of the bicycle, and the rear handlebar assembly 300 comprises a rear rotating shaft 301 rotatably provided on the frame 100 and a rear handlebar 302 fixedly provided on the rear rotating shaft 301. The front handlebar 202 is provided to be manually operated, and drives the front rotating shaft 201 to rotate, and the rear handlebar 302 is provided to be manually operated, and drives the rear rotating shaft 301 to rotate. In this embodiment, the bicycle also includes a front seat assembly 500 located between the front handlebar assembly 200 and the rear handlebar assembly 300 and a rear seat assembly 600 located behind the rear handlebar assembly 300. The child sits on the front seat assembly 500 and can control the front handlebar 202, and the parent sits on the rear seat assembly 600 and can control the rear handlebar 302.

Continuing to refer to Figures 1 to 8, the bicycle steering structure includes a steering mechanism 1, which includes a first cable sleeve 13, a second cable sleeve 14, a first cable 11 slidably inserted into the first cable sleeve 13, and a second cable 12 slidably inserted into the second cable sleeve 14. Both end portions of the first cable sleeve 13 are used for fixed connection with the frame 100, and both end portions of the second cable sleeve 14 are used for fixed connection with the frame 100. Both ends of the first cable 11 are respectively fixedly connected to the first side of the front rotating shaft 201 and the first side of the rear rotating shaft 301, and both ends of the second cable 12 are respectively fixedly connected to the second side of the front rotating shaft 201 and the second side of the rear rotating shaft 301, so that the rear rotating shaft 301 can drive the front rotating shaft 201 to rotate synchronously. For example, the rear shaft 301 can drive the front shaft 201 to rotate synchronously by tensioning the first cable 11 and the second cable 12, so that the parent and the child can operate the handlebars at the same time, so that the child who controls the front handlebar 202 can get the driving experience while the parent who controls the rear handlebar 302 can also control the steering of the vehicle to prevent danger. In addition, the first cable 11 and the second cable 12 are directly connected to the rear shaft 301, so that the first cable 11 and the second cable 12 do not need to bend too much and turn, making the structure of the steering mechanism 1 simpler.

Continuing to refer to Figures 1-8, for example, the first cable 11 can slide relative to the first cable sleeve 13 and have an initial position and a steering position. When the first cable 11 is at the initial position, the bicycle travels forward. When the first cable 11 is at the steering position, the first cable 11 can drive the front shaft 201 to rotate to make the bicycle turn.

2, the bicycle steering structure further includes a limit assembly 3, which includes a first limit member 31 fixedly arranged on the frame 100 and a second limit member 32 fixedly arranged on the rear shaft 301. When the first cable 11 is in the steering position, the first limit member 31 abuts against the second limit member 32, thereby preventing the second limit member 32 from continuing to rotate in the direction of moving the first cable 11 away from the initial position, preventing the rear shaft 301 and the front axle 201 from rotating too much, and avoiding the handlebars from being in contact with the child. In addition, the first cable 11 and the second cable 12 can be protected from being destroyed by excessive torque applied by an adult.

3-4, the steering mechanism 1 further includes an adjustment assembly 15, which includes two first adjustment bolts 151 provided on the first cable 11, and the two ends of the first cable sleeve 13 are respectively threadedly connected with the two first adjustment bolts 151, for example, both ends of the first cable sleeve 13 are provided with internal threads, and are threadedly connected with the external threads of the two first adjustment bolts 151. By providing two first adjustment bolts 151, and the two ends of the first cable sleeve 13 are respectively threadedly connected with the two first adjustment bolts 151, the tightness of the first cable sleeve 13 can be adjusted, and the parallelism between the rear handlebar 302 and the front handlebar 202 can be adjusted.

Continuing to refer to Figures 3-4, similar to the above structure, the adjustment assembly 15 also includes two second adjustment bolts 152 arranged on the second cable 12, and the two ends of the second cable sleeve 14 are respectively threadedly connected to the two second adjustment bolts 152 to adjust the tightness of the second cable sleeve 14, and at the same time, the parallelism between the rear handlebar 302 and the front handlebar 202 can be adjusted.

5 to 8 , the bicycle steering structure further includes a front handlebar connection structure 2, which includes a front axle mounting member 21 and a front handlebar mounting member 22. The front axle mounting member 21 is configured to be fixedly connected to the front rotating shaft 201, and the front handlebar mounting member 22 is configured to be fixedly connected to the front handlebar 202. For example, the front handlebar mounting member 22 is composed of two connecting members, the front handlebar 202 is located between the two connecting members, and the two connecting members are fixed by bolts or screws, so that the front handlebar 202 is fixedly set on the front handlebar mounting member 22. The front axle mounting member 21 is rotatably set on the front handlebar mounting member 22, and the inner peripheral wall of the front handlebar mounting member 22 has a groove 221. The front axle mounting member 21 is provided with an insert block 211, for example, the insert block 211 can extend relative to the outer peripheral surface of the front axle mounting member 21, and the insert block 211 can be inserted into the groove 221. The front shaft 201 can rotate synchronously with the front handlebar 202 by inserting the insert block 211 into the groove 221, so that the child can turn the bicycle by manipulating the front handlebar 202. For example, there are multiple insert blocks 211 and multiple grooves 221, and multiple insert blocks 211 can be inserted into multiple grooves 221 one by one, or multiple insert blocks 211 can be removed from the grooves 221 at the same time, so as to facilitate the adjustment of the angle of the front handlebar 202 relative to the front shaft 201.

5 to 8, the front handlebar connection structure 2 further includes an elastic member 23. When the insert block 211 is inserted into the groove 221, the elastic member 23 can provide an elastic force to keep the insert block 211 away from the axis of the front axle mounting member 21. In this embodiment, the front axle mounting member 21 is further provided with a receiving groove 212. The elastic member 23 is a compression spring. The first end of the compression spring abuts against the groove wall of the receiving groove 212, and the second end of the compression spring abuts against the insert block 211.

In the related art, the front and rear axles always rotate synchronously, which is convenient for parents to control the rear shaft 301 through the rear handlebar 302 to control the movement of the front shaft 201, but at the same time, the front handlebar 202 may also control the movement of the front shaft 201. Therefore, if the directions of the forces applied to the front handlebar 202 and the rear handlebar 302 are different, there is a risk that the cable will be broken.

Continuing to refer to FIG. 5 to FIG. 8 , in this embodiment, when the front handlebar mounting member 22 rotates relative to the front axle mounting member 21, the insert block 211 can be driven to be inserted into the groove 221 or to be disengaged from the groove 221. For example, a guiding inclined surface can be provided on the side wall of the groove 221 to guide the insert block 211 to be disengaged from the groove 221. When the rear handlebar 302 is subjected to a small force, the front handlebar 202 can control the rotation of the front shaft 201, and at the same time control the synchronous rotation of the rear shaft 301 and the rear handlebar 302. When a dangerous situation occurs, the parent will apply a large force to the rear handlebar 302. At this time, when the front handlebar 202 is subjected to a large force, it will drive the front handlebar mounting member 22 to rotate relative to the front axle mounting member 21. At this time, the insert block 211 inserted into the groove 221 can be disengaged from the groove 221, so that the front handlebar mounting member 22 will not drive the front axle mounting member 21 to rotate, thereby preventing the cable from being broken. That is to say, in this embodiment, the front handlebar connection structure 2 is equivalent to a torque limiter. When the steering of the rear handlebar 302 operated by the person is inconsistent and the torque exceeds the set value, the front handlebar 202 slips and loses control of the steering of the front shaft 201, while the rear handlebar 302 continues to control the steering of the front shaft 201.

5-8 , the insert block 211 is a roller and can roll with the groove wall of the groove 221 to reduce the friction resistance when the insert block 211 abuts against the groove wall of the groove 221. For example, the groove wall of the groove 221 is arc-shaped to adapt to the shape of the insert block 211.

The present embodiment also provides a bicycle, comprising the above bicycle steering structure, and also comprising a frame 100, a front handlebar assembly 200, a rear handlebar assembly 300 and a front wheel 400. The front handlebar assembly 200 comprises a front rotating shaft 201 rotatably disposed on the frame 100 and a front handlebar 202 connected to the front rotating shaft 201; the rear handlebar assembly 300 comprises a rear rotating shaft 301 rotatably disposed on the frame 100 and a rear handlebar 302 fixedly disposed on the rear rotating shaft 301; the front rotating shaft 201 is connected to the front wheel 400 of the bicycle. The bicycle steering structure of the bicycle has a simple structure, making the overall appearance of the bicycle neat.

For example, as shown in FIG9 , the frame 100 includes a main frame 101 and an outer shell 102, wherein the outer shell 102 covers the main frame 101, and the steering mechanism 1 is disposed in the outer shell 102, so that the steering mechanism 1 is protected by the outer shell 102 to prevent the first cable 11, the second cable 12, the first cable sleeve 13, and the second cable sleeve 14 and other structures from being damaged by external collisions, and to prevent the above structures from tripping over the rider, and at the same time simplifying the overall structure of the frame 100 and the steering mechanism 1, with a neat and beautiful appearance.

Claims

A bicycle steering structure is arranged on a bicycle frame (100), the bicycle further comprising a front handlebar assembly (200) and a rear handlebar assembly (300), the front handlebar assembly (200) comprising a front rotating shaft (201) rotatably arranged on the frame (100) and a front handlebar (202) connected to the front rotating shaft (201), the front rotating shaft (201) being arranged to be connected to a front wheel (400) of the bicycle, the rear handlebar assembly (300) comprising a rear rotating shaft (301) rotatably arranged on the frame (100) and a rear handlebar (302) fixedly arranged on the rear rotating shaft (301);

The bicycle steering structure comprises:

The steering mechanism (1) comprises a first cable sleeve (13), a second cable sleeve (14), a first cable (11) slidably inserted into the first cable sleeve (13), and a second cable (12) slidably inserted into the second cable sleeve (14), the end portions of both ends of the first cable sleeve (13) being respectively arranged to be fixedly connected to the vehicle frame (100), the end portions of both ends of the second cable sleeve (14) being respectively arranged to be fixedly connected to the vehicle frame (100), the two ends of the first cable (11) being respectively fixedly connected to the first side of the front rotating shaft (201) and the first side of the rear rotating shaft (301), and the two ends of the second cable (12) being respectively fixedly connected to the second side of the front rotating shaft (201) and the second side of the rear rotating shaft (301), so that the rear rotating shaft (301) can drive the front rotating shaft (201) to rotate synchronously.
The bicycle steering structure according to claim 1 further comprises a front handlebar connection structure (2), wherein the front handlebar connection structure (2) comprises a front axle mounting member (21) and a front handlebar mounting member (22), wherein the front axle mounting member (21) is configured to be fixedly connected to the front rotating shaft (201), and the front handlebar mounting member (22) is configured to be fixedly connected to the front handlebar (202); the front axle mounting member (21) is rotatably disposed on the front handlebar mounting member (22), the inner peripheral wall of the front handlebar mounting member (22) has a groove (221), and the front axle mounting member (21) is provided with an insert block (211), and the insert block (211) can be inserted into the groove (221).
According to the bicycle steering structure of claim 2, the front handlebar connection structure (2) further comprises an elastic member (23), and when the plug-in block (211) is inserted into the groove (221), the elastic member (23) can provide an elastic force to move the plug-in block (211) away from the axis of the front axle mounting member (21).
According to the bicycle steering structure of claim 2, when the front handlebar mounting member (22) rotates relative to the front axle mounting member (21), the plug block (211) can be driven to be inserted into the groove (221) or to be disengaged from the groove (221).
The bicycle steering structure according to claim 4, wherein the insert block (211) is a roller, and the roller can be in rolling contact with the groove wall of the groove (221).
According to the bicycle steering structure of claim 1, the steering mechanism (1) further comprises an adjusting assembly (15), the adjusting assembly (15) comprises two first adjusting bolts (151) arranged on the first cable (11), and the two ends of the first cable sleeve (13) are respectively threadedly connected to the two first adjusting bolts (151).
According to the bicycle steering structure of claim 6, the adjustment assembly (15) further comprises two second adjustment bolts (152) arranged on the second cable (12), and the two ends of the second cable sleeve (14) are respectively threadedly connected to the two second adjustment bolts (152).
The bicycle steering structure according to claim 1, wherein the first cable (11) is slidable relative to the first cable sleeve (13) to have an initial position and a steering position, and when the first cable (11) is at the initial position, The bicycle moves forward, and when the first cable (11) is at a turning position, the first cable (11) can drive the front rotating shaft (201) to rotate so that the bicycle turns;

The bicycle steering structure further comprises a limiting component (3), wherein the limiting component (3) comprises a first limiting member (31) fixedly arranged on the frame (100) and a second limiting member (32) fixedly arranged on the rear shaft (301); when the first cable (11) is located at a steering position, the first limiting member (31) abuts against the second limiting member (32).
A bicycle, comprising the bicycle steering structure according to any one of claims 1 to 8, further comprising:

Frame (100);

A front handlebar assembly (200) comprises a front rotating shaft (201) rotatably arranged on the frame (100) and a front handlebar (202) connected to the front rotating shaft (201);

A rear handlebar assembly (300) comprises a rear rotating shaft (301) rotatably arranged on the frame (100) and a rear handlebar (302) fixedly arranged on the rear rotating shaft (301);

A front wheel (400), wherein the front rotating shaft (201) is connected to the front wheel (400) of the bicycle.
The bicycle according to claim 9, wherein the frame (100) comprises a main frame (101) and an outer shell (102), the outer shell (102) is arranged outside the main frame (101), and the steering mechanism (1) is arranged inside the outer shell (102).