bicycle steering system

Abstract

This utility model provides a bicycle steering system, comprising a handlebar body, two handlebar tubes, a stem tube, and a sleeve. The handlebar body is generally cylindrical and includes a first joint and a second joint. The first joint and the second joint are located on opposite sides of the handlebar body. The two handlebar tubes are integrally connected to the second joint. The stem tube is connected to the first joint and has an internal space. The sleeve is fitted within the internal space. The maximum axial width of the first joint parallel to the stem tube is greater than the maximum axial width of the second joint parallel to the stem tube. Therefore, the bicycle steering system of this utility model has a width difference in the handlebar body from the first joint to the second joint, which significantly improves its overall structural strength and has application potential in related industries.

Description

Technical Field

[0001] This utility model relates to a bicycle steering system, and more particularly to a bicycle steering system with excellent structural strength. Background Technology

[0002] The steering system is the hub of bicycle directional control, and the handlebars are an indispensable part of the bicycle's steering system. The handlebars connect the handlebars to the steering tube of the fork and have three main functions: bearing the reverse force of pedaling, controlling the direction of the ride, and maintaining balance. Therefore, it is the core setting for controlling the direction of the bicycle while riding.

[0003] Most bicycle handlebars currently on the market are formed by casting. Due to the characteristics of casting, their weight often deviates from the requirements for lightweight bicycles. Furthermore, bicycle handlebars made by casting have lower surface precision, requiring additional surface polishing, resulting in high processing costs.

[0004] To address the aforementioned issues, steering systems featuring bicycle handlebars manufactured using die casting have emerged on the market. However, the overall structural strength of these handlebars is insufficient, and they are prone to deformation due to external forces, rendering the steering system unusable.

[0005] Therefore, providing a bicycle handlebar that combines lightweight design with excellent structural strength for use in steering systems is a technically valuable challenge. Utility Model Content

[0006] One embodiment of this utility model provides a bicycle steering system, comprising a handlebar body, two handlebar tubes, a stem tube, and a sleeve. The handlebar body is generally cylindrical and includes a first connecting portion and a second connecting portion. The first connecting portion and the second connecting portion are located on opposite sides of the handlebar body. The two handlebar tubes are integrally connected to the second connecting portion. The stem tube is connected to the first connecting portion and has an internal space. The sleeve is fitted within the internal space. The maximum axial width of the first connecting portion parallel to the stem tube is greater than the maximum axial width of the second connecting portion parallel to the stem tube.

[0007] According to the bicycle steering system of the aforementioned embodiment, the handlebar body can be a thin-shell component, and the thickness of the thin-shell of the handlebar body can be 2 mm to 5 mm.

[0008] According to the bicycle steering system of the aforementioned embodiment, the riser may include a riser body and a first connecting portion. The internal space of the riser body is located within the riser body. The first connecting portion is disposed on the riser body and is connected to a first connecting portion.

[0009] According to the bicycle steering system of the aforementioned embodiments, the first joint may include a concave arc structure, the first connecting part may include a convex arc structure, and the concave arc structure and the convex arc structure are correspondingly connected.

[0010] According to the bicycle steering system of the aforementioned embodiment, the maximum axial width of the parallel vertical tube of the first connecting part may be less than the maximum axial width of the parallel vertical tube of the first connecting part.

[0011] According to the bicycle steering system of the foregoing embodiment, the vertical tube may include a cut that extends along the axial direction of the vertical tube, wherein the cut may be located on the side of the vertical tube different from the first connection portion, and the internal space of the tube may communicate with the cut.

[0012] According to the bicycle steering system of the aforementioned embodiment, the sleeve may include a sleeve body and two lugs. The sleeve body is fitted into the inner space of the tube. The two lugs may be disposed on the sleeve body, wherein each of the two lugs may extend axially along the vertical tube, and the two lugs may be opposite each other and clamped in a cut.

[0013] In the bicycle steering system according to the aforementioned embodiment, the handlebar body and the vertical tube can be integrally connected.

[0014] The bicycle steering system according to the aforementioned embodiment may include a bend in each of the two handlebar tubes.

[0015] By including a first joint and a second joint on opposite sides of the handlebar body, and with the maximum axial width of the first joint parallel to the vertical tube being greater than the maximum axial width of the second joint parallel to the vertical tube, the handlebar body of the bicycle steering system of this invention has a width difference configuration from the first joint to the second joint. This significantly improves the overall structural strength of the bicycle steering system of this invention and avoids the problem of deformation caused by external forces when existing bicycle handlebars are configured with a single tube diameter.

[0016] Another embodiment of this utility model provides a bicycle steering system, comprising a stem body, two handlebar tubes, a riser tube, a sleeve, and a reinforcing structure. The stem body is generally cylindrical and includes a first joint and a second joint. The first joint and the second joint are located on opposite sides of the stem body. The two handlebar tubes are integrally connected to the second joint. The riser tube is connected to the first joint and has an internal space. The sleeve is fitted into the internal space. The reinforcing structure is recessed into the stem body. The maximum axial width of the first joint parallel to the riser tube is greater than the maximum axial width of the second joint parallel to the riser tube.

[0017] According to the bicycle steering system of the aforementioned embodiment, the handlebar body can be a thin-shell component, and the thickness of the thin-shell of the handlebar body can be 2 mm to 5 mm.

[0018] According to the bicycle steering system of the aforementioned embodiment, the riser may include a riser body and a first connecting portion. The internal space of the riser body is located within the riser body. The first connecting portion is disposed on the riser body and is connected to a first connecting portion.

[0019] According to the bicycle steering system of the aforementioned embodiments, the first joint may include a concave arc structure, the first connecting part may include a convex arc structure, and the concave arc structure and the convex arc structure are correspondingly connected.

[0020] According to the bicycle steering system of the aforementioned embodiment, the maximum axial width of the parallel vertical tube of the first connecting part may be less than the maximum axial width of the parallel vertical tube of the first connecting part.

[0021] According to the bicycle steering system of the foregoing embodiment, the vertical tube may include a cut that extends along the axial direction of the vertical tube, wherein the cut may be located on the side of the vertical tube different from the first connection portion, and the internal space of the tube may communicate with the cut.

[0022] According to the bicycle steering system of the aforementioned embodiment, the sleeve may include a sleeve body and two lugs. The sleeve body is fitted into the inner space of the tube. The two lugs may be disposed on the sleeve body, wherein each of the two lugs may extend axially along the vertical tube, and the two lugs may be opposite each other and clamped in a cut.

[0023] In the bicycle steering system according to the aforementioned embodiment, the handlebar body and the vertical tube can be integrally connected.

[0024] The bicycle steering system according to the aforementioned embodiment may include a bend in each of the two handlebar tubes.

[0025] Therefore, the bicycle steering system of this utility model includes a first joint and a second joint located on opposite sides of the handlebar body. The maximum axial width of the parallel vertical tube of the first joint is greater than the maximum axial width of the parallel vertical tube of the second joint. The reinforcing structure is recessed into the handlebar body. The handlebar body has a width difference configuration from the first joint to the second joint. This greatly improves the overall structural strength of the bicycle steering system of this utility model. The reinforcing structure can further increase the structural strength of the handlebar body, thereby avoiding the problem that existing bicycle handlebars are prone to deformation due to external forces when configured with a single tube diameter. Attached Figure Description

[0026] To make the above and other objects, features, advantages and embodiments of this utility model more apparent and understandable, the accompanying drawings are described below:

[0027] Figure 1 A schematic diagram illustrating a bicycle steering system according to one embodiment of the present invention is provided.

[0028] Figure 2 For illustration Figure 1 A schematic diagram of the handlebars, stem, and stem of a bicycle steering system.

[0029] Figure 3 For illustration Figure 1 Exploded view of a bicycle steering system;

[0030] Figure 4 For illustration Figure 1 Exploded view of the handlebars, stem, and vertical tube of a bicycle steering system.

[0031] Figure 5 A schematic diagram illustrating another embodiment of the bicycle steering system of this utility model is provided.

[0032] Figure 6 For illustration Figure 5 Exploded views of the bicycle steering system, including the stem body, handlebars, and stem; and

[0033] Figure 7 For illustration Figure 5 A schematic diagram of the handlebars and the two handlebars of a bicycle steering system. Detailed Implementation

[0034] The various embodiments of this utility model will be discussed in more detail below. However, these embodiments can be applications of various novel concepts and can be implemented in various different specific scopes. The specific embodiments are for illustrative purposes only and are not limited to the scope of disclosure. Furthermore, for the sake of simplifying the drawings, some conventional structures and elements will be shown in a simple schematic manner in the drawings, and repeated elements may be represented by the same number.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 To illustrate a schematic diagram of a bicycle steering system 100 according to one embodiment of the present invention, Figure 2 For illustration Figure 1 A schematic diagram of the handlebar body 110, handlebar stems 120, and stem tube 130 of a bicycle steering system 100. Figure 3 For illustration Figure 1 Exploded view of bicycle steering system 100. Figure 4 For illustration Figure 1 An exploded view of the handlebar body 110, handlebar stems 120, and stem tube 130 of a bicycle steering system 100. The bicycle steering system 100 includes the handlebar body 110, handlebar stems 120, stem tube 130, and sleeve 140.

[0036] The faucet body 110 is generally cylindrical, and includes a first connecting portion 111 and a second connecting portion 112. For example... Figure 1 and Figure 2 As shown, the head handle body 110 is generally cylindrical in shape, and the first connecting part 111 and the second connecting part 112 are respectively located on opposite sides of the head handle body 110. Specifically, the first connecting part 111 and the second connecting part 112 are respectively located at opposite ends of the generally cylindrical head handle body 110, so as to further connect different components and control the direction of travel by guiding the head handle body 110 when the bicycle is running.

[0037] Furthermore, such as Figure 3 As shown, the stem body 110 can be a thin-shell component, and the thickness of the thin shell of the stem body 110 can be 2 mm to 5 mm. By configuring the stem body 110 as a thin-shell component, the weight of the stem body 110 can be significantly reduced to achieve the lightweight requirements of the bicycle. Furthermore, the stem body 110 can be made of metal sheet or plastic components by hydroforming, which can greatly simplify the manufacturing process and reduce costs, but this utility model is not limited thereto.

[0038] Both handlebar stems 120 are integrally connected to the second joint 112. Specifically, the two handlebar stems 120 and the stem body 110 can be die-cast into a single component, and the two handlebar stems 120 are integrally connected to opposite sides of the second joint 112. The two handlebar stems 120 can transmit rotational power to the bicycle's front fork (not shown) via the stem body 110 to further rotate the front fork and control the riding direction.

[0039] Furthermore, in the bicycle steering system 100, each of the two handlebars 120 may include a bend 121. When a user rides a bicycle including the bicycle steering system 100 of this invention, the user's hands can respectively grip the two bends 121 of the two handlebars 120, at which time the user's upper body can be lowered to reduce wind resistance during riding. In addition, although not shown in the figure, the two handlebars 120 may also be configured as flat handlebars as needed, and this invention is not limited thereto.

[0040] The vertical pipe 130 is connected to the first joint 111, and the vertical pipe 130 has an internal space 131. For example... Figure 3 As shown, the vertical pipe 130 includes a vertical pipe body 132, a first connecting portion 133, and a cut 134. The internal space 131 is located within the vertical pipe body 132. The first connecting portion 133 is disposed on the vertical pipe body 132 and is connected to the first connecting portion 111. Furthermore, the cut 134 extends axially along the vertical pipe 130, wherein the cut 134 is located on the side of the vertical pipe 130 opposite to the first connecting portion 133, and the internal space 131 communicates with the cut 134 (see reference). Figure 4(As shown).

[0041] like Figure 2 and Figure 3 As shown, the maximum axial width D1 of the first joint 111 parallel vertical tube 130 is greater than the maximum axial width D2 of the second joint 112 parallel vertical tube 130, so that when viewed from the side of the bicycle steering system 100, the handlebar body 110 presents a structural configuration that gradually expands from the second joint 112 to the first joint 111. In detail, existing bicycle handlebars often have a single tube diameter to simplify manufacturing processes. However, bicycle handlebars with a single tube diameter are prone to dents due to external impacts or deformation after years of use, making them not only easily damaged but also having a less than ideal service life. Therefore, the bicycle steering system 100 of this utility model has a configuration with a width difference in the first joint 111 parallel vertical tube 130 of the handlebar body 110, where the maximum axial width D1 is greater than the maximum axial width D2 of the second joint 112 parallel vertical tube 130. In this way, when an external force is applied to the handlebar body 110, the external force will be dispersed due to the conical surface of the handlebar body 110, thereby avoiding the deformation caused by the external force being applied to the handlebar body 110 at a single point. This greatly improves the overall structural strength of the bicycle steering system 100 of this utility model and can effectively extend its service life.

[0042] The sleeve 140 is fitted into the internal space 131 of the tube. For example... Figure 3 As shown, the sleeve 140 includes a sleeve body 141 and two lugs 142. The sleeve body 141 is fitted into the inner space 131 of the riser tube 130. The two lugs 142 are disposed on the sleeve body 141, wherein each of the two lugs 142 extends axially along the riser tube 130, and the two lugs 142 are opposite to each other and clamped in the cutout 134. In detail, the riser tube 130 is used to connect the bicycle fork. When the bicycle steering system 100 of this invention is assembled with the bicycle fork, the sleeve 140 will first be fitted onto the bicycle fork and then further fitted into the inner space 131 of the riser tube 130. At this time, the sleeve body 141 will be located between the riser tube 130 and the bicycle fork to fill the gap between the riser tube 130 and the bicycle fork and provide appropriate friction, while the two lugs 142 are inserted into the cutout 134 for screws or other fixing elements to fix them.

[0043] For example Figure 3 and Figure 4As shown, the first connecting portion 111 of the faucet body 110 may include a concave arc structure 113, and the first connecting portion 133 of the vertical tube 130 may include a convex arc structure 135, with the concave arc structure 113 and the convex arc structure 135 correspondingly connected. The concave arc structure 113 of the first connecting portion 111 can increase the connection area between the faucet body 110 and the vertical tube 130, while the convex arc structure 135 of the first connecting portion 133 can be configured to correspond to the shape of the concave arc structure 113, thereby increasing the connection strength between the faucet body 110 and the vertical tube 130.

[0044] Furthermore, such as Figure 3 As shown, the maximum axial width D1 of the first connecting portion 111 parallel to the vertical tube 130 can be less than the maximum axial width D3 of the first connecting portion 133 parallel to the vertical tube 130. This provides sufficient mating surface when the handlebar body 110 is connected to the vertical tube 130, thereby improving the overall structural strength of the bicycle steering system 100 of this invention. Furthermore, although not shown in the figures, the handlebar body 110 and the vertical tube 130 can also be integrally formed and connected, but this invention is not limited to this.

[0045] Please refer to Figure 5 , Figure 6 and Figure 7 , Figure 5 To illustrate another embodiment of the bicycle steering system 200 of this utility model, Figure 6 For illustration Figure 5 Exploded view of the handlebar body 210, handlebar stems 220, and stem tube 230 of the bicycle steering system 200. Figure 7 For illustration Figure 5 A schematic diagram of the stem body 210 and handlebars 220 of a bicycle steering system 200. The bicycle steering system 200 includes the stem body 210, handlebars 220, stem 230, sleeve 240, and reinforcing structure 250.

[0046] The handlebar body 210 is generally cylindrical and includes a first connecting portion 211 and a second connecting portion 212, which are located on opposite sides of the handlebar body 210. Furthermore, the handlebar body 210 can be a thin-shell component to significantly reduce its weight and achieve the lightweight design of the bicycle. Moreover, the thickness of the thin shell of the handlebar body 210 can be 2 mm to 5 mm, but this invention is not limited to this.

[0047] The two handle tubes 220 are integrally connected to the second joint portion 212. In detail, the two handle tubes 220 are integrally connected to the opposite sides of the second joint portion 212, and each of the two handle tubes 220 may include a bent portion 221, but the present invention is not limited thereto.

[0048] The vertical pipe 230 is connected to the first joint 211, and the vertical pipe 230 has an internal space 231. For example... Figure 5 As shown, the vertical pipe 230 may include a vertical pipe body 232, a first connecting portion 233, and a cut 234. The pipe interior space 231 is located within the vertical pipe body 232. The first connecting portion 233 is disposed on the vertical pipe body 232 and is connected to the first connecting portion 211. Furthermore, the cut 234 extends axially along the vertical pipe 230, wherein the cut 234 is located on the side of the vertical pipe 230 opposite to the first connecting portion 233, and the pipe interior space 231 communicates with the cut 234.

[0049] The sleeve 240 is fitted into the inner space 231 of the tube, and the sleeve 240 includes a sleeve body 241 and two lugs 242. The sleeve body 241 is fitted into the inner space 231 of the vertical tube 230. Each of the two lugs 242 extends axially along the vertical tube 230, and the two lugs 242 are opposite each other and clamped in the cutout 234. When the bicycle steering system 200 of this utility model is assembled with the bicycle fork, the sleeve 240 will first be fitted onto the outside of the bicycle fork and then further fitted into the inner space 231 of the vertical tube 230. At this time, the sleeve body 241 will be located between the vertical tube 230 and the bicycle fork to fill the gap between the vertical tube 230 and the bicycle fork and provide appropriate friction, while the two lugs 242 are inserted into the cutout 234 for screws or other fixing elements to fix them.

[0050] For example Figure 6 As shown, the maximum axial width D1 of the parallel vertical tube 230 of the first joint 211 is greater than the maximum axial width D2 of the parallel vertical tube 230 of the second joint 212, and the maximum axial width D1 of the parallel vertical tube 230 of the first joint 211 can be less than the maximum axial width D3 of the parallel vertical tube 230 of the first connecting part 233, so that when the handlebar body 210 is viewed from the side of the bicycle steering system 200, it presents a structural configuration that gradually expands from the second joint 212 to the first joint 211. In this way, when an external force is applied to the headstock body 210, the force will be dispersed by the conical surface of the headstock body 210, thereby avoiding the deformation caused by the force being applied to the headstock body 210 at a single point. The configuration in which the maximum axial width D1 of the first connecting part 211 parallel to the vertical tube 230 is smaller than the maximum axial width D3 of the first connecting part 233 parallel to the vertical tube 230 provides sufficient mating surface when the headstock body 210 is connected to the vertical tube 230, thereby greatly improving the overall structural strength of the bicycle steering system 200 of this utility model and effectively extending its service life.

[0051] Furthermore, the stem body 210, handlebars 220, stem tube 230, and sleeve 240 of the bicycle steering system 200 have similar structures to the stem body 110, handlebars 120, stem tube 130, and sleeve 140 of the bicycle steering system 100. For details of the similar structures, please refer to the contents of the bicycle steering system 100, which will not be repeated here.

[0052] like Figure 7 As shown, the reinforcing structure 250 is recessed into the faucet body 210. More specifically, the reinforcing structure 250 can be formed on the faucet body 210 by means of recessing or stamping to further increase the structural strength of the faucet body 210. Furthermore, the shape of the reinforcing structure 250 can be configured as needed, and can be configured as square, circular, dotted, or other different forms; the present invention is not limited to the shape disclosed in the drawings.

[0053] In summary, the advantages of the bicycle steering system of this invention are as follows: First, the bicycle steering system of this invention features a handlebar body comprising a first connecting portion and a second connecting portion located on opposite sides, with the maximum axial width of the first connecting portion parallel to the vertical tube being greater than the maximum axial width of the second connecting portion parallel to the vertical tube. This configuration creates a width difference in the handlebar body from the first connecting portion to the second connecting portion, significantly improving the overall structural strength of the bicycle steering system. Second, by recessing a reinforcing structure into the handlebar body, the structural strength of the handlebar body is further increased, thus avoiding the problem of deformation caused by external forces in existing bicycle handlebars. Third, by including a concave arc structure in the first connecting portion of the handlebar body and a convex arc structure in the first connecting portion of the vertical tube, with the concave and convex arc structures correspondingly connected, the connection area between the handlebar body and the vertical tube is increased, thereby increasing the connection strength between the handlebar body and the vertical tube. Fourth, by making the maximum axial width of the first joint parallel vertical tube smaller than the maximum axial width of the first connecting part parallel vertical tube, sufficient joint surface can be provided when the headstock body is connected to the vertical tube, thereby improving the overall structural strength of the bicycle steering system of this utility model.

[0054] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0055] [Symbol Explanation]

[0056] 100, 200: Bicycle steering system

[0057] 110,210: Head body

[0058] 111,211: First joint

[0059] 112,212: Second joint

[0060] 113: Concave arc structure

[0061] 120, 220: Hand-held tube

[0062] 121,221: Bend

[0063] 130, 230: Vertical pipe

[0064] 131,231: Internal space

[0065] 132,232: Stand pipe body

[0066] 133,233: First connecting part

[0067] 134,234: Incision

[0068] 135: Convex Arc Structure

[0069] 140, 240: Sleeve

[0070] 141,241: Casing body

[0071] 142,242: Earplate

[0072] 250: Reinforced Structure

[0073] D1, D2, D3: Maximum width.

Claims

1. A bicycle steering system, characterized by, Include: The faucet body, generally cylindrical, comprises: First joint; and The second connecting part, the first connecting part and the second connecting part are respectively located on opposite sides of the faucet body; Hold the tube with both hands and connect the second joint as a single unit; A vertical pipe, connected to the first joint, and the vertical pipe having an internal space; and A sleeve, fitted inside the space of the tube; The maximum width of the first joint parallel to the axial direction of the vertical pipe is greater than the maximum width of the second joint parallel to the axial direction of the vertical pipe.

2. The bicycle steering system of claim 1, wherein, The faucet body is a thin-shell component, and the thickness of the thin shell of the faucet body is 2 mm to 5 mm.

3. The bicycle steering system of claim 1, wherein, The vertical pipe contains: The vertical pipe body, the internal space of which is located within the vertical pipe body; and A first connecting part is disposed on the vertical pipe body, and the first connecting part is connected to the first connecting part.

4. The bicycle steering system of claim 3, wherein, The first joint includes a concave arc structure, the first connecting part includes a convex arc structure, and the concave arc structure is correspondingly connected to the convex arc structure.

5. The bicycle steering system of claim 3, wherein, The maximum width of the first joint parallel to the axial direction of the vertical pipe is less than the maximum width of the first connecting part parallel to the axial direction of the vertical pipe.

6. The bicycle steering system of claim 3, wherein, The riser also includes: A cut extends along the axial direction of the vertical pipe, wherein the cut is located on the side of the vertical pipe different from the first connection portion, and the internal space of the pipe communicates with the cut.

7. The bicycle steering system of claim 6, wherein, The sleeve contains: The sleeve body is fitted inside the space of the tube; and Two lugs are disposed on the sleeve body, wherein each of the two lugs extends along the axial direction of the vertical tube, and the two lugs are opposite to each other and clamped in the cut.

8. The bicycle steering system of claim 1, wherein, The faucet body is integrally connected to the vertical pipe.

9. The bicycle steering system of claim 1, wherein, Each of the two handles contains a bend.

10. A bicycle steering system characterized by, Include: The faucet body, generally cylindrical, comprises: First joint; and The second connecting part, the first connecting part and the second connecting part are respectively located on opposite sides of the faucet body; Hold the tube with both hands and connect the second joint as a single unit; A vertical pipe, connected to the first joint, and the vertical pipe having an internal space; A sleeve, fitted inside the space of the tube; as well as The reinforced structure is recessed into the faucet body; The maximum width of the first joint parallel to the axial direction of the vertical pipe is greater than the maximum width of the second joint parallel to the axial direction of the vertical pipe.

11. The bicycle steering system of claim 10, wherein, The faucet body is a thin-shell component, and the thickness of the thin shell of the faucet body is 2 mm to 5 mm.

12. The bicycle steering system of claim 10, wherein, The vertical pipe contains: The vertical pipe body, the space inside the pipe being located within the vertical pipe body; and A first connecting part is disposed on the vertical pipe body, and the first connecting part is connected to the first connecting part.

13. The bicycle steering system of claim 12, wherein, The first joint includes a concave arc structure, the first connecting part includes a convex arc structure, and the concave arc structure is correspondingly connected to the convex arc structure.

14. The bicycle steering system of claim 12, wherein, The maximum width of the first joint parallel to the axial direction of the vertical pipe is less than the maximum width of the first connecting part parallel to the axial direction of the vertical pipe.

15. The bicycle steering system of claim 12, wherein, The riser also includes: A cut extends along the axial direction of the vertical pipe, wherein the cut is located on the side of the vertical pipe different from the first connection portion, and the internal space of the pipe communicates with the cut.

16. The bicycle steering system of claim 15, wherein, The sleeve contains: The sleeve body is fitted inside the space of the tube; and Two lugs are disposed on the sleeve body, wherein each of the two lugs extends along the axial direction of the vertical tube, and the two lugs are opposite to each other and clamped in the cut.

17. The bicycle steering system of claim 10, wherein, The faucet body is integrally connected to the vertical pipe.

18. The bicycle steering system of claim 10, wherein, Each of the two handle tubes includes a bend. The two handle tubes each include a bend.

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