Bicycle steering structure and bicycle

Abstract

The present invention belongs to the field of bicycle technology and discloses a bicycle steering structure and a bicycle. In the bicycle steering structure, both ends of a first cable sleeve are used to be fixedly connected to the frame, and both ends of a second cable sleeve are used to be fixedly connected to the frame. The two ends of the first cable are respectively fixedly connected to one side of the front rotating shaft and one side of the rear rotating shaft, and the two ends of the second cable are respectively fixedly connected to the other side of the front rotating shaft and the other side of the rear rotating shaft. Therefore, by tensioning the first and second cables, the rear rotating shaft can drive the front rotating shaft to rotate synchronously, thereby enabling parents and children to operate the handlebars simultaneously, allowing children to enjoy the driving experience while parents can also control the steering of the vehicle to prevent accidents. In addition, the first and second cables are directly connected to the rear rotating shaft, which can eliminate the need for excessive bending and steering of the first and second cables, making the structure of the steering mechanism simpler.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycles, in particular to a bicycle steering structure and a bicycle. Background Art

[0002] Parent-child bicycles typically feature two seats on the same frame, one for the child and one for the parent. Because children have limited control over bicycles and poor ability to anticipate danger, traditional parent-child bicycles typically have the parent sit in the back seat while steering.

[0003] To allow children sitting in the front seat to experience driving, existing technologies offer parent-child bicycles that use connecting rods or cables to control the synchronous steering of the front and rear axles. This allows children to steer the bicycle while parents can also control the steering, avoiding danger. However, problems exist. For solutions that connect the two axles via connecting rods, the rotation of the connecting rods can collide with the child, while if the connecting rods are set inside the bicycle frame, the frame will become bloated. For solutions that control the synchronous steering of the front and rear axles via cables, the cables are connected to the handlebars, so the cables need to be bent at multiple points to steer, resulting in a complex structure. Summary of the Invention

[0004] According to one aspect of the present invention, the present invention provides a bicycle steering structure to solve the problem in the prior art that cables need to be bent at multiple locations for steering, resulting in a complex structure.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A bicycle steering structure is configured to be mounted on a bicycle frame, the bicycle further comprising a front handlebar assembly and a rear handlebar assembly, the front handlebar assembly comprising a front rotating shaft rotatably mounted on the frame and a front handlebar connected to the front rotating shaft, the front rotating shaft being configured to be connected to the front wheel of the bicycle, the rear handlebar assembly comprising a rear rotating shaft rotatably mounted on the frame and a rear handlebar fixedly mounted on the rear rotating shaft;

[0007] include:

[0008] The steering mechanism includes a first cable sleeve, a second cable sleeve, a first cable slidingly inserted into the first cable sleeve, and a second cable slidingly inserted into the second cable sleeve. Both end portions of the first cable sleeve are used for fixed connection to the vehicle frame, and both end portions of the second cable sleeve are used for fixed connection to the vehicle frame. Both ends of the first cable are respectively fixedly connected to one side of the front rotating shaft and one side of the rear rotating shaft, and both ends of the second cable are respectively fixedly connected to the other side of the front rotating shaft and the other side of the rear rotating shaft, so that the rear rotating shaft can drive the front rotating shaft to rotate synchronously.

[0009] As a preferred solution of the bicycle steering structure, it also includes a front handlebar connecting structure, which includes a front axle mounting piece and a front handlebar mounting piece, the front axle mounting piece is used to be fixedly connected to the front rotating shaft, and the front handlebar mounting piece is used to be fixedly connected to the front handlebar; the front axle mounting piece is rotatably set on the front handlebar mounting piece, the inner peripheral wall of the front handlebar mounting piece has a groove, and the front axle mounting piece is provided with an insert block, which can be inserted into the groove.

[0010] As a preferred solution of the bicycle steering structure, the front handlebar connection structure further includes an elastic member. When the plug-in block is inserted into the groove, the elastic member can provide an elastic force to move the plug-in block away from the axis of the front axle mounting member.

[0011] As a preferred solution of the bicycle steering structure, when the front handlebar mounting member rotates relative to the front axle mounting member, the inserting block can be driven to be inserted into or removed from the groove.

[0012] As a preferred solution of the bicycle steering structure, the inserting block is a roller and can be in rolling contact with the groove wall of the groove.

[0013] As a preferred solution of the bicycle steering structure, the steering mechanism further includes an adjustment assembly, which includes two first adjustment bolts provided on the first cable, and both ends of the first cable sleeve are respectively threadedly connected to the two first adjustment bolts.

[0014] As a preferred solution of the bicycle steering structure, the adjustment assembly further includes two second adjustment bolts provided on the second cable, and both ends of the second cable sleeve are respectively threadedly connected to the two second adjustment bolts.

[0015] As a preferred solution for the bicycle steering structure, the first cable can slide relative to the first cable sleeve and have an initial position and a steering position. When the first cable is in the initial position, the bicycle travels forward. When the first cable is in the steering position, the first cable can drive the front shaft to rotate to turn the bicycle. The bicycle steering structure also includes a limiting assembly, which includes a first limiting member fixedly provided on the frame and a second limiting member fixedly provided on the rear shaft. When the first cable is in the steering position, the first limiting member abuts against the second limiting member.

[0016] According to another aspect of the present invention, a bicycle is provided, comprising the above-mentioned bicycle steering structure, further comprising:

[0017] Frame;

[0018] A front handlebar assembly, comprising a front rotating shaft rotatably disposed on the frame and a front handlebar connected to the front rotating shaft;

[0019] A rear handlebar assembly, comprising a rear shaft rotatably mounted on the frame and a rear handlebar fixedly mounted on the rear shaft;

[0020] A front wheel, wherein the front rotating shaft is connected to the front wheel of the bicycle.

[0021] As a preferred solution of the bicycle, the frame includes a main frame and an outer shell, the outer shell is covered on the main frame, and the steering mechanism is arranged in the outer shell.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a bicycle steering structure, wherein both ends of a first cable sleeve are fixedly connected to the bicycle frame, and both ends of a second cable sleeve are fixedly connected to the bicycle frame. The two ends of the first cable are respectively fixedly connected to one side of the front rotating shaft and one side of the rear rotating shaft, and the two ends of the second cable are respectively fixedly connected to the other side of the front rotating shaft and the other side of the rear rotating shaft. Therefore, by tensioning the first and second cables, the rear rotating shaft can drive the front rotating shaft to rotate synchronously, thereby enabling parents and children to operate the handlebars simultaneously. The child controlling the front handlebars can enjoy the driving experience while the parent controlling the rear handlebars can also control the steering of the vehicle, thereby preventing danger. In addition, the first and second cables are directly connected to the rear rotating shaft, which can eliminate the need for excessive bending and steering of the first and second cables, thereby simplifying the structure of the steering mechanism.

[0024] The present invention also provides a bicycle comprising the above-mentioned bicycle steering structure. The bicycle steering structure has a simple structure and the appearance of the bicycle is neat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a bicycle according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of the steering mechanism in the embodiment of the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the structure of the steering mechanism in the embodiment of the present invention. Figure 2 ;

[0029] Figure 5 2 is a schematic diagram of the external structure of the front handlebar connection structure in an embodiment of the present invention;

[0030] Figure 6 2 is a schematic diagram of the internal structure of the front handlebar connection structure according to an embodiment of the present invention;

[0031] Figure 7 2 is a schematic structural diagram of a front handlebar mounting assembly according to an embodiment of the present invention;

[0032] Figure 8 2 is a schematic structural diagram of a front axle mounting member in an embodiment of the present invention.

[0033] In the picture:

[0034] 100, frame;

[0035] 200, front handlebar assembly; 201, front rotating shaft; 202, front handlebar;

[0036] 300, rear handlebar assembly; 301, rear shaft; 302, rear handlebar;

[0037] 400, front wheel;

[0038] 500, front seat assembly;

[0039] 600, rear seat assembly;

[0040] 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;

[0041] 2. Front handlebar connection structure; 21. Front axle mounting member; 211. Insert block; 212. Accommodation slot; 22. Front handlebar mounting member; 221. Groove; 23. Elastic member;

[0042] 3. Limiting assembly; 31. First limiting member; 32. Second limiting member. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0044] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0047] Parent-child bicycles typically have two seats on the same frame, one for the child and the other for the parent. To ensure the child in the front seat can experience the ride, existing technologies offer parent-child bicycles that use connecting rods or cables to control the synchronous steering of the front and rear axles. This allows the child to steer the bicycle while the parent can also control the steering, avoiding danger. However, problems exist with solutions that connect the two axles via a connecting rod. Rotating the connecting rod can collide with the child. With solutions that control the synchronous steering of the front and rear axles via cables, the cables are connected to the rear handlebars, requiring multiple bends and turns, resulting in a complex structure.

[0048] In view of the above problems, the present invention provides a bicycle steering structure to solve the problem in the prior art that cables need to be bent and turned at multiple locations, resulting in a complex structure. The structure can be used in the field of bicycle technology.

[0049] Reference Figures 1-8The bicycle steering structure is configured to be mounted on a bicycle frame 100. The bicycle further includes a front handlebar assembly 200 and a rear handlebar assembly 300. The front handlebar assembly 200 includes a front shaft 201 rotatably mounted on the frame 100 and a front handlebar 202 connected to the front shaft 201. The front shaft 201 is configured to be connected to the front wheel 400 of the bicycle. The rear handlebar assembly 300 includes a rear shaft 301 rotatably mounted on the frame 100 and a rear handlebar 302 fixedly mounted on the rear shaft 301. The front handlebar 202 is configured to be manually operated and drives the front shaft 201 to rotate. The rear handlebar 302 is configured to be manually operated and drives the rear shaft 301 to rotate. In this embodiment, the bicycle further 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.

[0050] Continue to refer to Figures 1-8 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 ends of the first cable sleeve 13 are used to be fixedly connected to the frame 100, and both ends of the second cable sleeve 14 are used to be fixedly connected to the frame 100. Both ends of the first cable 11 are respectively fixedly connected to one side of the front rotating shaft 201 and one side of the rear rotating shaft 301, and both ends of the second cable 12 are respectively fixedly connected to the other side of the front rotating shaft 201 and the other side of the rear rotating shaft 301, so that the rear rotating shaft 301 can drive the front rotating shaft 201 to rotate synchronously. Specifically, by tensioning the first and second cables 11, 12, the rear shaft 301 can be driven to rotate synchronously with the front shaft 201, thereby enabling a parent and child to simultaneously operate the handlebars. This allows the child, controlling the front handlebars 202, to experience the driving experience while the parent, controlling the rear handlebars 302, can also control the steering of the vehicle, thereby preventing accidents. Furthermore, the first and second cables 11, 12 are both directly connected to the rear shaft 301, eliminating the need for excessive bending and steering of the first and second cables 11, 12, thus simplifying the structure of the steering mechanism 1.

[0051] Continue to refer to Figures 1-8 Specifically, 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 moves 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.

[0052] Reference Figure 2The bicycle steering structure also includes a limiter assembly 3, which includes a first limiter 31 fixed to the frame 100 and a second limiter 32 fixed to the rear shaft 301. When the first cable 11 is in the steering position, the first limiter 31 abuts the second limiter 32, thereby preventing the second limiter 32 from further rotating in a direction that would move the first cable 11 away from its initial position. This prevents the rear shaft 301 and the front axle 201 from rotating excessively, thereby preventing the handlebars from colliding with and injuring a child. Furthermore, the limiter assembly 3 protects the first and second cables 11 and 12 from being damaged by excessive torque applied by an adult.

[0053] Reference Figure 3-Figure 4 The steering mechanism 1 also includes an adjustment assembly 15, which includes two first adjustment bolts 151 provided on the first cable 11. The first cable sleeve 13 has two ends threadedly connected to the two first adjustment bolts 151. Specifically, both ends of the first cable sleeve 13 are provided with internal threads that are threadedly connected to the external threads of the two first adjustment bolts 151. By providing the two first adjustment bolts 151 and threading the two ends of the first cable sleeve 13 with the two first adjustment bolts 151, the tightness of the first cable sleeve 13 can be adjusted.

[0054] Continue to refer to Figure 3-Figure 4 Similar to the above structure, the adjustment assembly 15 also includes two second adjustment bolts 152 provided 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 .

[0055] Reference Figure 5-Figure 8The bicycle steering structure also 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. Specifically, the front handlebar mounting member 22 is composed of two connecting members, with the front handlebar 202 positioned between the two connecting members. The two connecting members are secured by bolts or screws, thereby securing the front handlebar 202 to the front handlebar mounting member 22. The front axle mounting member 21 is rotatably mounted on the front handlebar mounting member 22. 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. Specifically, the insert block 211 can extend relative to the outer peripheral surface of the front axle mounting member 21 and can be inserted into the groove 221. By inserting the insert block 211 into the groove 221, the front shaft 201 can rotate synchronously with the front handlebar 202, allowing the child to steer the bicycle by manipulating the front handlebar 202. Optionally, multiple insert blocks 211 and grooves 221 are provided, and multiple insert blocks 211 can be inserted into multiple grooves 221 in a one-to-one correspondence, or multiple insert blocks 211 can be removed from the grooves 221 simultaneously, thereby facilitating adjustment of the angle of the front handlebar 202 relative to the front shaft 201.

[0056] Continue to refer to Figure 5-Figure 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 provides an elastic force that forces the insert block 211 away from the axis of the front axle mounting member 21. In this embodiment, the front axle mounting member 21 further defines a receiving groove 212. The elastic member 23 is a compression spring, one end of which abuts the wall of the receiving groove 212 and the other end abuts the insert block 211.

[0057] In the prior art, the front and rear axles always rotate synchronously. Although it is convenient for parents to control the rear rotating shaft 301 through the rear handlebar 302 to control the movement of the front rotating shaft 201, the front handlebar 202 may also control the movement of the front rotating 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 of the cable being broken.

[0058] To solve this problem, continue to refer to Figure 5-Figure 8In this embodiment, when the front handlebar mount 22 rotates relative to the front axle mount 21, it can drive the insert block 211 to engage with or disengage from the groove 221. Specifically, a guiding slope can be provided on the sidewalls of the groove 221 to guide the insert block 211 out of 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 simultaneously control the synchronous rotation of the rear shaft 301 and the rear handlebar 302. However, in dangerous situations, the parent may apply a large force to the rear handlebar 302. This large force on the front handlebar 202 will drive the front handlebar mount 22 to rotate relative to the front axle mount 21. At this time, the insert block 211 engaged in the groove 221 can be disengaged from the groove 221. Therefore, the front handlebar mount 22 will not cause the front axle mount 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 direction of the front handlebar 202 operated by the child and the rear handlebar 302 operated by the adult are 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 maintain control of the steering of the front shaft 201.

[0059] Continue to refer to Figure 5-Figure 8 The insert 211 is a roller and can roll in contact with the wall of the groove 221 to reduce frictional resistance when the insert 211 abuts against the wall of the groove 221. Preferably, the wall of the groove 221 is arc-shaped to adapt to the shape of the insert 211.

[0060] This embodiment also provides a bicycle comprising the aforementioned bicycle steering structure, a frame 100, a front handlebar assembly 200, a rear handlebar assembly 300, and a front wheel 400. The front handlebar assembly 200 includes a front shaft 201 rotatably mounted on the frame 100 and a front handlebar 202 connected to the front shaft 201; the rear handlebar assembly 300 includes a rear shaft 301 rotatably mounted on the frame 100 and a rear handlebar 302 fixedly mounted on the rear shaft 301; the front shaft 201 is connected to the front wheel 400 of the bicycle. The bicycle steering structure of this bicycle has a simple structure, resulting in a neat overall appearance.

[0061] Optionally, the frame 100 includes a main frame and an outer shell, the outer shell is covered on the main frame, and the steering mechanism 1 is arranged in the outer shell, so that the steering mechanism 1 is protected by the outer shell 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-mentioned structures from tripping the rider. At the same time, the overall structure of the frame 100 and the steering mechanism 1 is simplified, and the appearance is neat and beautiful.

[0062] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A bicycle steering structure, for being 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 used 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); It is characterized by: include: A steering mechanism (1) comprising 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), wherein both ends of the first cable sleeve (13) are used for fixed connection with the vehicle frame (100), and both ends of the second cable sleeve (14) are used for fixed connection with the vehicle frame (100), and both ends of the first cable (11) are respectively fixedly connected to one side of the front rotating shaft (201) and one side of the rear rotating shaft (301), and both ends of the second cable (12) are respectively fixedly connected to the other side of the front rotating shaft (201) and the other 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 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 used for being fixedly connected to the front rotating shaft (201), and the front handlebar mounting member (22) is used for being fixedly connected to the front handlebar (202); the front axle mounting member (21) is rotatably mounted 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); The front handlebar connection structure (2) further includes an elastic member (23), and when the insert block (211) is inserted into the groove (221), the elastic member (23) can provide an elastic force that moves the insert block (211) away from the axis of the front axle mounting member (21); When the front handlebar mounting piece (22) rotates relative to the front axle mounting piece (21), the insert block (211) can be driven to be inserted into the groove (221) or to be disengaged from the groove (221).

2. The bicycle steering structure according to claim 1, characterized in that: The insert block (211) is a roller and is capable of rolling contact with the groove wall of the groove (221).

3. The bicycle steering structure according to claim 1, characterized in that: The steering mechanism (1) further comprises an adjustment assembly (15), wherein the adjustment assembly (15) comprises two first adjustment bolts (151) provided on the first cable (11), and both ends of the first cable sleeve (13) are respectively threadedly connected to the two first adjustment bolts (151).

4. The bicycle steering structure according to claim 3, characterized in that: The adjustment assembly (15) further comprises two second adjustment bolts (152) provided on the second cable (12), and both ends of the second cable sleeve (14) are respectively threadedly connected to the two second adjustment bolts (152).

5. The bicycle steering structure according to claim 1, wherein: The first cable (11) can slide relative to the first cable sleeve (13) and has 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. The bicycle steering structure also includes a limiting component (3), the limiting component (3) includes 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 at the steering position, the first limiting member (31) abuts against the second limiting member (32).

6. A bicycle, characterized in that The bicycle steering structure according to any one of claims 1 to 5 further comprises: 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.

7. The bicycle according to claim 6, characterized in that The vehicle frame (100) comprises a main frame and an outer shell, the outer shell is provided on the main frame, and the steering mechanism (1) is provided in the outer shell.

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