Vertical pipe, frame, and two-wheeler

Abstract

A vertical pipe (100), comprising a fixing base (10), a connecting pipe (20) and a joint (30) which are sequentially connected, wherein the fixing base (10) is configured for mounting a handlebar, and the joint (30) is configured to be connected to a front fork; and in the cross section (21) of the connecting pipe (20) taken along a first plane that is perpendicular to the extension direction of the connecting pipe, the dimension of the cross section (21) in a first direction (X) is smaller than the dimension of the cross section (21) in a second direction (Y) perpendicular to the riding direction of a bicycle, or the wall thickness in the cross section (21) in the first direction (X) is smaller than the wall thickness in the cross section (21) in the second direction (Y), or the dimension of the cross section (21) in the first direction (X) is smaller than the dimension of the cross section (21) in the second direction (Y) perpendicular to the riding direction of the bicycle while the wall thickness in the cross section (21) in the first direction (X) is smaller than the wall thickness in the cross section (21) in the second direction (Y), such that the moment of inertia of the cross section (21) about a first axis extending in the first direction (X) is greater than the moment of inertia of the cross section (21) about a second axis extending in the second direction (Y), the second direction (Y) being perpendicular to the first direction (X). The vertical pipe (100) ensures the force transmission effect and has good lateral rigidity. Further provided are a frame and a bicycle.

Description

Standpipe, frame and two-wheeled vehicle Technical Field

[0001] The present application relates to the technical field of two-wheeled vehicles, and in particular to a vertical tube, a frame and a two-wheeled vehicle. Background Art

[0002] Two-wheeled vehicles, with their advantages of being light, convenient, and environmentally friendly, have become an important means of transportation for people. Among them, bicycles, as an important two-wheeled vehicle, are not only an environmentally friendly means of transportation for commuting and traveling, but also a fitness equipment for riding, exercise, and travel, becoming an important means of transportation and fitness in people's daily lives.

[0003] The frame of a two-wheeled vehicle includes a vertical tube, which includes a joint, a connecting pipe, and a fixed seat connected in sequence. The joint is connected to the front fork, which is used to mount the front wheel, and the fixed seat is used to mount the handlebars. When riding, the rider holds the handlebars and manipulates them to change the direction of travel of the front wheel, thereby changing the direction of travel of the two-wheeled vehicle.

[0004] When manipulating the handlebars to change the direction of a two-wheeled vehicle, the rider applies force to the stem through the handlebars. The stem transmits this force to the front fork, and ultimately, through the front fork, to the front wheel. To ensure effective force transmission, the stem must have good lateral rigidity. However, conventional stems are generally round tubes, which suffer from poor lateral rigidity. Summary of the Invention

[0005] Based on this, it is necessary to address the problem of poor lateral rigidity of the vertical tube and provide a vertical tube, a frame and a two-wheeled vehicle that can improve the lateral rigidity.

[0006] A vertical tube for a two-wheeled vehicle, comprising a fixing seat, a connecting pipe and a joint connected in sequence, wherein the fixing seat is used to mount a handlebar, and the joint is used to connect to a front fork;

[0007] The connecting tube is hollow, and a cross section is formed by cutting the connecting tube with a first plane perpendicular to the extension direction of the connecting tube. The size of the cross section in the first direction is smaller than the size of the cross section in the second direction perpendicular to the riding direction of the two-wheeled vehicle, or the wall thickness of the cross section in the first direction is smaller than the wall thickness of the cross section in the second direction, or the size of the cross section in the first direction is smaller than the size of the cross section in the second direction perpendicular to the riding direction of the two-wheeled vehicle and the wall thickness of the cross section in the first direction is smaller than the wall thickness of the cross section in the second direction, so that the moment of inertia of the cross section with respect to the first axis extending in the first direction is greater than the moment of inertia of the cross section with respect to the second axis extending in the second direction; the second direction is perpendicular to the first direction.

[0008] In one embodiment, the connecting pipe extends in a vertical direction, and the first direction is parallel to the riding direction.

[0009] In one embodiment, the connecting pipe is arranged to be inclined relative to the vertical direction, and the first direction is arranged to be inclined relative to the riding direction.

[0010] In one embodiment, the cross-section of the connecting tube is in the shape of an elliptical ring, the major axis of the elliptical ring is parallel to the second direction, and the minor axis of the elliptical ring is parallel to the first direction.

[0011] In one embodiment, the connecting tube includes a body and a first reinforcing rib, the body is a circular tube, and the first reinforcing rib is protruding from at least one end of the body in the second direction.

[0012] In one embodiment, the first reinforcing ribs are protrudingly provided at both ends of the main body in the second direction, and the first reinforcing ribs at both ends are in the shape of lugs and are symmetrically arranged about the center of the main body.

[0013] In one embodiment, the first reinforcing rib is protruded from one end of the body in the second direction.

[0014] In one embodiment, the connecting pipe further includes a second reinforcing rib, and the second reinforcing rib is protruded from at least one end of the body in the first direction;

[0015] A height of the second reinforcing rib protruding from the body is smaller than a height of the first reinforcing rib protruding from the body.

[0016] In one embodiment, the second reinforcing ribs are protrudingly provided at both ends of the main body in the first direction, and the second reinforcing ribs at both ends are in the shape of lugs and are symmetrically arranged about the center of the main body.

[0017] In one embodiment, the second reinforcing rib is protruded from one end of the body in the first direction.

[0018] In one embodiment, a dimension of the cross section in the first direction is smaller than a dimension of the cross section in the second direction, and a wall thickness of the cross section in the first direction is greater than a wall thickness of the cross section in the second direction.

[0019] In one embodiment, the size of the cross section in the first direction is greater than the size of the cross section in the second direction, and the wall thickness of the cross section in the first direction is less than the wall thickness of the cross section in the second direction.

[0020] In one embodiment, the connecting tube is a metal tube or a carbon fiber tube.

[0021] In one embodiment, the joint and the fixing seat are made of the same material as the connecting pipe.

[0022] In one embodiment, the connecting pipe, the joint and the fixing seat are all made of plastic material.

[0023] In one embodiment, the fixing seat, the connecting pipe and the joint are welded, glued or integrally formed.

[0024] In one embodiment, the joint includes a first part and a second part connected to each other, and the first part and the second part are rotatably connected.

[0025] A bicycle frame comprises a frame body, a front fork and the vertical tube as described above, wherein the vertical tube and the front fork are both mounted on the frame body, and the front fork is connected to the joint.

[0026] A two-wheeled vehicle comprises the frame as described above.

[0027] In one embodiment, the two-wheeled vehicle is a bicycle.

[0028] The aforementioned standpipe, frame, and two-wheeled vehicle, by configuring the cross-section of the connecting pipe to have a larger dimension in the second direction than in the first direction, or configuring the wall thickness of the cross-section in the second direction to be larger than that in the first direction, or configuring the cross-section of the connecting pipe to have a larger dimension in the second direction than in the first direction and the wall thickness of the cross-section in the second direction to be larger than that in the first direction, thereby increasing the moment of inertia of the cross-section of the connecting pipe about a first axis extending in the first direction and the moment of inertia of the cross-section about a second axis extending in the second direction. Compared to the prior art method of using a circular tube (where the moments of inertia of the cross-section of the circular tube about the first and second axes are equal), the lateral rigidity of the standpipe is improved, thus meeting the requirements of use. Furthermore, when the standpipe is used in a foldable two-wheeled vehicle, the aforementioned configuration can avoid the situation where the standpipe interferes with the main beam tube after folding, thereby increasing the folded width, while maximizing the rigidity of the standpipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a side view of a standpipe provided in one embodiment of the present application;

[0030] FIG2 is a front view of the standpipe shown in FIG1 ;

[0031] FIG3 is a cross-sectional view of the connecting pipe of the standpipe shown in FIG1 ;

[0032] FIG4 is a dimensioned diagram of the connecting pipe shown in FIG3 ;

[0033] FIG5 is a cross-sectional view of a connecting pipe of a vertical pipe provided in another embodiment of the present application.

[0034] Explanation of the accompanying drawings: 100, vertical pipe; 10, fixing seat; 20, connecting pipe; 21, cross section; 22, main body; 23, first reinforcing rib; 24, second reinforcing rib; 30, joint; 31, first part; 32, second part; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0041] Referring to Figures 1 and 2 , one embodiment of the present application provides a stem tube 100 for use in a two-wheeled vehicle and includes a mounting base 10, a connecting tube 20, and a connector 30, which are sequentially connected. Specifically, the connecting tube 20 is provided with a mounting base 10 and a connector 30 at both ends of its extension direction. The mounting base 10 is used to mount the handlebars, and the connector 30 is used to connect to the front fork.

[0042] Further, referring to FIG3 , the connecting tube 20 is cut along a first plane perpendicular to the direction in which the connecting tube 20 extends to form a cross-section 21. The dimension of the cross-section 21 in the first direction X is smaller than the dimension of the cross-section 21 in the second direction Y, or the wall thickness of the cross-section 21 in the first direction X is smaller than the wall thickness of the cross-section 21 in the second direction Y, or the dimension of the cross-section 21 in the first direction X is smaller than the dimension of the cross-section 21 in the second direction Y, and the wall thickness of the cross-section 21 in the first direction X is smaller than the wall thickness of the cross-section 21 in the second direction Y, so that the moment of inertia of the cross-section 21 with respect to the first axis extending in the first direction is greater than the moment of inertia of the cross-section 21 with respect to the second axis extending in the second direction. That is, all three of the above-mentioned configurations can make the moment of inertia of the cross-section 21 with respect to the first axis extending in the first direction greater than the moment of inertia of the cross-section 21 with respect to the second axis extending in the second direction. The second direction Y is perpendicular to the first direction X, and the second direction Y is perpendicular to the riding direction (forward direction) of the two-wheeled vehicle. It should be noted that the first direction X and the second direction Y are both located within the same cross-section 21. The fact that the dimension of the cross section 21 in the first direction X is smaller than the dimension of the cross section 21 in the second direction Y means that the maximum dimension of the cross section 21 in the first direction X is smaller than the maximum dimension of the cross section 21 in the second direction Y. The fact that the wall thickness of the cross section 21 in the first direction X is smaller than the wall thickness of the cross section 21 in the second direction Y means that the maximum wall thickness of the cross section 21 in the first direction X is smaller than the maximum wall thickness of the cross section 21 in the second direction Y. It should also be noted that the moment of inertia is a geometric quantity, generally used to describe the property of a cross section that resists bending. The moment of inertia of a cross section about an axis is related to the cross-sectional dimension in a direction perpendicular to the axis and the wall thickness of the cross section.

[0043] In some embodiments, when the connecting tube 20 extends in a vertical direction, that is, the extending direction of the connecting tube 20 is parallel to the vertical direction, in which case the cross section 21 is perpendicular to the vertical direction, and the first direction X is parallel to the riding direction. In other embodiments, when the connecting tube 20 does not extend in a vertical direction, that is, the extending direction of the connecting tube 20 is inclined relative to the vertical direction, in which case the cross section 21 is not perpendicular to the vertical direction, and the first direction X is inclined relative to the riding direction.

[0044] The standpipe 100 provided in the embodiment of the present application increases the lateral rigidity of the standpipe 100 by configuring the cross-section 21 of the connecting tube 20 to have a greater dimension in the second direction Y than in the first direction X, or configuring the wall thickness of the cross-section 21 in the second direction Y to be greater than that in the first direction X, or configuring the cross-section 21 in the second direction Y to be greater than that in the first direction X and configuring the wall thickness of the cross-section 21 in the second direction Y to be greater than that in the first direction X. Alternatively, this configuration maximizes the rigidity of the standpipe 100 by preventing the standpipe 100 from interfering with the main beam tube after folding, thereby increasing the folded width.

[0045] In some embodiments, referring again to FIG. 3 , the cross-section 21 of the connecting tube 20 is shaped like an elliptical ring. Thus, the major axis of the elliptical ring is parallel to the second direction Y, and the minor axis of the elliptical ring is parallel to the first direction X. When the cross-section 21 of the connecting tube 20 is shaped like an elliptical ring, the maximum dimension of the cross-section 21 in the first direction X is smaller than the maximum dimension of the cross-section in the second direction Y. In this case, the wall thickness of the cross-section 21 in the first direction X is equal to the wall thickness in the second direction Y.

[0046] 4 , according to the formula for moment of inertia, the moment of inertia of the cross section 21 of the connecting pipe 20 of the standpipe 100 provided in the embodiment of the present application relative to the first axis extending in the first direction X is: x =πL 3 D / 64-π(L-2t) 3 (D-2t) / 64, the moment of inertia of the cross section 21 relative to the second axis extending in the second direction Y is I y =πD 3 L / 64-π(D-2t) 3 (L-2t) / 64. D is the outer diameter of the cross section 21 in the first direction X (the maximum dimension of the cross section 21 in the first direction X), L is the outer diameter of the cross section 21 in the second direction Y (the maximum dimension of the cross section 21 in the second direction Y), and t is the wall thickness of the connecting tube 20.

[0047] I x -I y =[πL 3 D / 64-π(L-2t) 3 (D-2t) / 64]-[πD 3L / 64-π(D-2t) 3 (L-2t) / 64]. Through calculation, we can find that I x -I y Greater than 0. In this way, the cross section 21 of the connecting tube 20 is set to an elliptical ring shape, so that the moment of inertia of the cross section 21 of the connecting tube 20 about the first axis extending in the first direction X is greater than the moment of inertia of the cross section 21 about the second axis extending in the second direction Y, thereby improving the lateral rigidity of the vertical tube 100 and meeting the use requirements.

[0048] In other embodiments, the cross-section 21 of the connecting tube 20 can also be configured as other irregular shapes. For example, in some specific embodiments, referring to FIG5 , the connecting tube 20 includes a body 22 and a first reinforcing rib 23. The body 22 is a circular tube, and the first reinforcing rib 23 is protruding from at least one end of the body 22 in the second direction Y. This allows the outer diameter of the cross-section 21 of the connecting tube 20 in the second direction Y to be greater than its outer diameter in the first direction X, and also allows the wall thickness of the cross-section 21 of the connecting tube 20 in the second direction Y to be greater than the wall thickness of the cross-section 21 in the first direction X. At this time, the moment of inertia of the cross-section 21 with respect to the first axis extending in the first direction X is: the sum of the moment of inertia of the cross-section portion corresponding to the main body 22 with respect to the first axis extending in the first direction X and the moment of inertia of the cross-section portion corresponding to the first reinforcement rib 23 with respect to the first axis extending in the first direction X, and the moment of inertia of the cross-section 21 with respect to the second axis extending in the second direction Y is the moment of inertia of the cross-section portion corresponding to the main body 22 with respect to the second axis extending in the second direction Y. It can be seen that the moment of inertia of the cross-section 21 of the connecting pipe 20 with respect to the first axis extending in the first direction X is greater than the moment of inertia of the second axis extending in the second direction Y of the cross-section 21, thereby improving the lateral rigidity of the vertical pipe 100 and meeting the usage requirements.

[0049] Specifically, first reinforcing ribs 23 are provided at both ends of the body 22 in the second direction Y. The first reinforcing ribs 23 at both ends are in the shape of lugs and are symmetrically arranged about the center of the body 22. This provides a symmetrical structure for the connecting tube 20, facilitating its manufacture. It is contemplated that in other embodiments, the first reinforcing rib 23 may be provided at one end of the body 22 in the second direction Y, without limitation herein.

[0050] Furthermore, the connecting tube 20 also includes a second reinforcing rib 24, which is protruded from at least one end of the main body 22 in the first direction X. The height of the second reinforcing rib 24 protruding from the main body 22 is less than the height of the first reinforcing rib 23 protruding from the main body 22. The second reinforcing rib 24 not only strengthens the connecting tube 20, but also prevents the outer diameter of the cross section 21 of the connecting tube 20 in the first direction X from being greater than the outer diameter in the second direction Y, nor does it prevent the wall thickness of the cross section 21 of the connecting tube 20 in the first direction X from being greater than the wall thickness of the cross section 21 in the second direction Y. This ensures that the moment of inertia of the cross section 21 about the first axis extending in the first direction X is greater than the moment of inertia of the cross section 21 about the second axis extending in the second direction Y, thereby improving the lateral rigidity of the standpipe 100 and meeting usage requirements.

[0051] In some embodiments, the body 22 has second reinforcing ribs 24 protruding from both ends in the first direction X. The second reinforcing ribs 24 at both ends are in the shape of lugs and are symmetrically arranged about the center of the body 22. This further enhances the strength of the connecting tube 20. It is contemplated that in other embodiments, the body 22 may also have a second reinforcing rib 24 protruding from one end in the first direction X, which is not a limitation here.

[0052] It can be understood that in some other embodiments, the shape of the cross section 21 of the connecting tube 20 can also be set in other ways. For example, the size of the cross section 21 in the first direction X can be set to be smaller than the size of the cross section 21 in the second direction Y, and the wall thickness of the cross section 21 in the first direction X is slightly larger than the wall thickness of the cross section 21 in the second direction Y, or the size of the cross section 21 in the first direction X is set to be slightly larger than the size of the cross section 21 in the second direction Y, and the wall thickness of the cross section 21 in the first direction X is smaller than the wall thickness of the cross section 21 in the second direction Y. As long as the moment of inertia of the cross section 21 with respect to the first axis extending in the first direction can be greater than the moment of inertia of the cross section 21 with respect to the second axis extending in the second direction, any setting method is acceptable and is not limited here.

[0053] In some embodiments, the connecting tube 20 is a metal tube or a carbon fiber tube. Specifically, the joint 30 and the fixing base 10 are made of the same material as the connecting tube 20. It is contemplated that in other embodiments, the material used for the connecting tube 20 is not limited. For example, the connecting tube 20 may be made of plastic, and the joint 30 and the fixing base 10 may also be made of plastic.

[0054] Furthermore, the fixing seat 10, the connecting pipe 20 and the joint 30 are welded, glued or integrally formed.

[0055] In some specific embodiments, the joint 30 includes a first portion 31 and a second portion 32 that are connected to each other. The first portion 31 and the second portion 32 are capable of relative rotation to facilitate folding or unfolding of the two-wheeled vehicle. It should be understood that in other embodiments, the structure of the joint 30 is not limited, as long as it can achieve the effect of connecting to the front fork.

[0056] Another embodiment of the present application further provides a bicycle frame including a frame body, a front fork, and the aforementioned stem tube 100, wherein the stem tube 100 and the front fork are both mounted on the frame body, and the front fork is connected to the joint 30. Since the stem tube 100 has beneficial effects, the bicycle frame including the stem tube 100 has the same beneficial effects, which will not be described in detail here.

[0057] Another embodiment of the present application further provides a two-wheeled vehicle comprising the above-mentioned frame. Since the vertical tube 100 and the frame have beneficial effects, the two-wheeled vehicle has the same beneficial effects, which will not be described in detail here.

[0058] In some specific embodiments, the two-wheeled vehicle is a bicycle. It is conceivable that in other embodiments, the type of the two-wheeled vehicle is not limited.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A vertical pipe for a two-wheeled vehicle, characterized in that: It comprises a fixing seat (10), a connecting pipe (20) and a joint (30) which are connected in sequence, wherein the fixing seat (10) is used for mounting a handlebar, and the joint (30) is used for connecting to a front fork; The connecting tube (20) is hollow, and a cross section (21) is formed by cutting the connecting tube (20) with a first plane perpendicular to the extending direction of the connecting tube (20). The size of the cross section (21) in the first direction (X) is smaller than the size of the cross section (21) in the second direction (Y) perpendicular to the riding direction of the two-wheeled vehicle, or the wall thickness of the cross section (21) in the first direction (X) is smaller than the wall thickness of the cross section (21) in the second direction (Y), or the size of the cross section (21) in the first direction (X) is smaller than the size of the cross section (21) in the second direction (Y) perpendicular to the riding direction of the two-wheeled vehicle, and the wall thickness of the cross section (21) in the first direction (X) is smaller than the wall thickness of the cross section (21) in the second direction (Y), so that the moment of inertia of the cross section (21) with respect to a first axis extending in the first direction is greater than the moment of inertia of the cross section (21) with respect to a second axis extending in the second direction; the second direction (Y) is perpendicular to the first direction (X).

2. The standpipe according to claim 1, characterized in that The connecting pipe (20) extends in a vertical direction, and the first direction (X) is parallel to the riding direction.

3. The standpipe according to claim 1, characterized in that The connecting pipe (20) is arranged obliquely with respect to the vertical direction, and the first direction (X) is arranged obliquely with respect to the riding direction.

4. The standpipe according to claim 1, characterized in that The cross section (21) of the connecting tube (20) is in the shape of an elliptical ring, the major axis direction of the elliptical ring is parallel to the second direction (Y), and the minor axis direction of the elliptical ring is parallel to the first direction (X).

5. The standpipe according to claim 1, characterized in that The connecting pipe (20) comprises a main body (22) and a first reinforcing rib (23); the main body (22) is a circular tube; and the first reinforcing rib (23) is protruding from at least one end of the main body (22) in the second direction (Y).

6. The standpipe according to claim 5, characterized in that The first reinforcing ribs (23) are protrudingly provided at both ends of the body (22) in the second direction (Y), and the first reinforcing ribs (23) at both ends are in the shape of lugs and are symmetrically arranged about the center of the body (22).

7. The standpipe according to claim 5, characterized in that The first reinforcing rib (23) is protrudingly provided on one end of the body (22) in the second direction (Y).

8. The standpipe according to claim 5, characterized in that The connecting pipe (20) further includes a second reinforcing rib (24), wherein the second reinforcing rib (24) is protruding from at least one end of the body (22) in the first direction (X); The height of the second reinforcing rib (24) protruding from the body (22) is less than the height of the first reinforcing rib (23) protruding from the body (22).

9. The standpipe according to claim 8, characterized in that The second reinforcing ribs (24) are protrudingly provided at both ends of the body (22) in the first direction (X), and the second reinforcing ribs (24) at both ends are in the shape of lugs and are symmetrically arranged about the center of the body (22).

10. The standpipe according to claim 8, characterized in that The second reinforcing rib (24) is protrudingly provided on one end of the body (22) in the first direction (X).

11. The standpipe according to claim 1, wherein: The size of the cross section (21) in the first direction (X) is smaller than the size of the cross section (21) in the second direction (Y), and the wall thickness of the cross section (21) in the first direction (X) is greater than the wall thickness of the cross section (21) in the second direction (Y).

12. The standpipe according to claim 1, wherein The size of the cross section (21) in the first direction (X) is greater than the size of the cross section (21) in the second direction (Y), and the wall thickness of the cross section (21) in the first direction (X) is less than the wall thickness of the cross section (21) in the second direction (Y).

13. The standpipe according to claim 1, wherein: The connecting tube (20) is a metal tube or a carbon fiber tube.

14. The standpipe according to claim 1, wherein: The joint (30) and the fixing seat (10) are made of the same material as the connecting pipe (20).

15. The standpipe according to claim 14, wherein: The connecting pipe (20), the joint (30) and the fixing seat (10) are all made of plastic material.

16. The standpipe according to claim 1, wherein The fixing seat (10), the connecting pipe (20) and the joint (30) are welded, glued or integrally formed.

17. The standpipe according to claim 1, wherein The joint (30) comprises a first part (31) and a second part (32) connected to each other, wherein the first part (31) and the second part (32) are rotatably connected.

18. A vehicle frame, characterized in that: It comprises a frame, a front fork and a vertical tube as claimed in any one of claims 1 to 17, wherein the vertical tube and the front fork are both mounted on the frame, and the front fork is connected to the joint (30).

19. A two-wheeled vehicle, characterized in that: Comprising the frame of claim 18.

20. The two-wheeled vehicle according to claim 19, wherein: The two-wheeled vehicle is a bicycle.

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