Bicycle frame capable of reducing wind resistance of front fork

Abstract

The bicycle frame capable of reducing the wind resistance of the front fork comprises a head tube and the front fork, the front fork comprises an ejector rod, a wind guiding column and supporting rods located on the two sides of a rear wheel, the bottom of the ejector rod and the bottom of the wind guiding column are both connected with the supporting rods, and the ejector rod and the wind guiding column are arranged in a spaced mode. A through hole is formed in the head pipe, the ejector rod is inserted into the through hole, the air guide column is located on one side of the head pipe, and the thickness of the air guide column is gradually reduced in the direction away from the head pipe, so that in the riding process of the bicycle, the air guide column is located in front of the head pipe to cut air; the bicycle can effectively reduce wind resistance of riding when the bicycle advances, enables riding to be easier, and solves the problem that wind resistance is large due to the fact that wind is cut by directly adopting the cylindrical outer side wall of the head pipe in the prior art. The outer side wall of the air guide column and the outer side wall of the head pipe are in smooth transition, the original thickness of the head pipe can be kept, and meanwhile the problem that the head pipe protrudes to increase air resistance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle frames, in particular to a bicycle frame capable of reducing the wind resistance of a front fork. Background Art

[0002] As is well known, a bicycle frame generally comprises a center tube, a head tube, a front fork connected to the head tube for mounting the front wheel, a rear fork for mounting the rear wheel, and a top tube connected to the center tube and the head tube at both ends. One end of the rear fork is generally connected to the center tube. The circular tube at the top of the front fork passes through the head tube and connects to the handlebars on both sides. However, because the circular tube at the top of the front fork needs to pass through the head tube, the front side of the head tube forms a cylindrical side surface, i.e., a semicircular arc surface. This side surface cuts through a large area of ​​wind during cycling, resulting in high wind resistance and increased riding resistance. Utility Model Content

[0003] The main purpose of the utility model is to provide a bicycle frame with reduced wind resistance of the front fork, so as to solve the problem that the side wall of the head tube of the existing bicycle frame is an arc surface, which leads to high wind resistance.

[0004] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0005] A bicycle frame for reducing front fork wind resistance comprises a head tube and a front fork, wherein the front fork comprises a top rod, an air guide column, and support rods located on both sides of a rear wheel, wherein the bottoms of the top rod and the air guide column are connected to the support rods, and the top rod and the air guide column are spaced apart;

[0006] A through hole is provided on the head tube, the push rod is inserted into the through hole, the air guide column is located on one side of the head tube, the thickness of the air guide column gradually decreases in the direction away from the head tube, and the outer wall of the air guide column smoothly transitions to the outer wall of the head tube.

[0007] Furthermore, the top ends of the two support rods are connected to form a platform on the top, the top rod is arranged on the platform, the air guide column is located on one side of the platform, and the bottom of the head pipe is in contact with the platform.

[0008] Furthermore, the bottom of the head tube is a plane, and the platform is a plane; the outer side wall of the head tube includes a front side wall, the front side wall is a side wall of a cylinder, and the shape of the rear side wall of the air guide column matches the shape of the front side wall.

[0009] Furthermore, the width of the air guide column near the bottom gradually decreases in the direction approaching the support rod.

[0010] Furthermore, the outer wall of the air guide column transitions smoothly with the outer wall of the support rod.

[0011] Furthermore, the outer side wall of the air guide column is a curved surface.

[0012] Furthermore, the top rod includes a column and a base connected to the bottom of the column, the base is connected to the support rod, the diameter of the outer wall of the base gradually decreases at least partially in the direction away from the platform, and the diameter of the base is larger than the diameter of the column.

[0013] Furthermore, the bicycle frame further comprises an upper tube and a down tube, one end of the upper tube is connected to the down tube, and the head tube is arranged at the connection between the upper tube and the down tube.

[0014] Furthermore, the outer side wall of the connection between the two support rods is an arc surface near the lower tube, and the side of the lower tube near the support rod fits with the outer side wall of the connection between the two support rods.

[0015] The present invention has the following beneficial effects: Compared to the prior art, the present invention configures an air guide column at the front end of the head tube, and the thickness of the air guide column gradually decreases in the direction away from the head tube. When riding a bicycle, the air guide column is located in front of the head tube to cut the wind. Moreover, due to the small thickness and pointed shape of the front end of the air guide column, the wind resistance when riding the bicycle forward can be effectively reduced, making riding easier. This solves the problem of high wind resistance caused by the prior art directly using the outer wall of the cylindrical head tube to cut the wind. In addition, the outer wall of the air guide column smoothly transitions with the outer wall of the head tube, which can maintain the original thickness of the head tube while preventing the head tube from protruding and increasing wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 for Figure 1 Enlarged view of area a in the middle;

[0019] Figure 3 This is an exploded view of the utility model;

[0020] Figure 4 for Figure 3 Enlarged view of area b;

[0021] Figure 5 This is a schematic diagram of the present invention after removing the front fork;

[0022] Figure 6 for Figure 5 Magnified view of area c. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Refer to the attached Figure 1-6 , a bicycle frame with reduced front fork wind resistance in an embodiment of the utility model.

[0025] The bicycle frame includes a head tube 2 and a front fork 1. The front fork 1 includes a top rod 11, an air guide column 12, and support rods 13 located on either side of the rear wheel. The bottoms of the top rod 11 and the air guide column 12 are both connected to the support rod 13, and the top rod 11 and the air guide column 12 are spaced apart. The head tube 2 has a through hole 21, into which the top rod 11 is inserted. The air guide column 12 is located on one side of the head tube 2. The thickness of the air guide column 12 gradually decreases as it moves away from the head tube 2, and the outer wall of the air guide column 12 smoothly transitions with the outer wall of the head tube 2.

[0026] The present invention disposes an air guide column 12 at the front end of the head tube 2, and the thickness of the air guide column 12 gradually decreases as it moves away from the head tube 2. During cycling, the air guide column 12 is located in front of the head tube 2 to cut the wind. Furthermore, the thin, pointed front end of the air guide column 12 effectively reduces wind resistance when the bicycle is moving forward, making riding easier. This solves the problem of high wind resistance caused by the existing method of directly cutting wind using the outer wall of the cylindrical body 111 of the head tube 2. Furthermore, the outer wall of the air guide column 12 smoothly transitions with the outer wall of the head tube 2, maintaining the original thickness of the head tube 2 while preventing the head tube 2 from bulging and increasing wind resistance.

[0027] In one embodiment, the top ends of the two support rods 13 are connected and a platform 14 is formed on the top. The top rod 11 is set on the platform 14, the air guide column 12 is located on one side of the platform 14, and the bottom of the head tube 2 abuts against the platform 14, so that when the front fork 1 and the head tube 2 are installed, the platform 14 can support the head tube 2, thereby enhancing the compactness of the assembly of the front fork 1 and the head tube 2 and improving the stability of the installation of the front fork 1 and the head tube 2.

[0028] In one embodiment, the bottom of the head tube 2 is a plane, the platform 14 is a plane, the outer wall of the head tube 2 includes a front side wall 22, the front side wall 22 is the side wall of the cylinder 111, and the shape of the rear side wall of the air guide column 12 is consistent with the shape of the front side wall 22, thereby further improving the compactness of the assembly structure of the front fork 1 and the head tube 2.

[0029] In one embodiment, the width of the wind guide column 12 near the bottom gradually decreases as it approaches the support rod 13. Because the bottoms of both the top rod 11 and the wind guide column 12 are connected to the support rod 13, and the bottom of the head tube 2 abuts the platform 14, that is, the bottom of the wind guide column 12 and the bottom of the head tube 2 are substantially at the same horizontal position, the width of the wind guide column 12 near the bottom gradually decreases as it approaches the support rod 13 to achieve a transition. This reduces material requirements and improves the aesthetics of the product without affecting the wind resistance of the cutting wind.

[0030] In one embodiment, the outer wall of the wind guide column 12 and the outer wall of the support rod 13 are smoothly transitioned to make the overall lines of the bicycle frame smooth without affecting the wind resistance cutting effect.

[0031] In one embodiment, the outer wall of the air guide column 12 is an arc surface, and the thickness of the air guide column 12 gradually decreases away from the head pipe 2, which can make the airflow during bicycle riding smoother and improve the aerodynamics of bicycle riding.

[0032] In one embodiment, the top rod 11 includes a column 111 and a base 112 connected to the bottom of the column 111. The base 112 is connected to the support rod 13, and the base 112 is connected to the platform 14. The diameter of the outer wall of the base 112 gradually decreases as it moves away from the platform 14. The diameter of the base 112 is larger than the diameter of the column 111. This facilitates the placement of the column 111 within the through hole 21, facilitating assembly of the front fork 1 and the head tube 2.

[0033] In one embodiment, the bicycle frame further includes an upper tube 3 and a down tube 4 , one end of the upper tube 3 and the down tube 4 are connected, and the head tube 2 is arranged at the connection between the upper tube 3 and the down tube 4 so as not to affect the assembly of the head tube 2 and the front fork 1 .

[0034] In one embodiment, the outer side wall 15 of the connection between the two support rods 13 is an arc surface near the lower tube 4, and the side surface of the lower tube 4 near the support rod 13 is matched with the outer side wall 15 of the connection between the two support rods 13, so that after the top rod 11 on the front fork 1 is subsequently assembled with the handlebar and the bicycle handle, the arc surface can be used to facilitate the rotation of the connection between the support rod 13 and the lower tube 4, and the compactness of the bicycle frame assembly can be improved.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in this utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A bicycle frame for reducing wind resistance of a front fork, characterized in that: The front fork comprises a head tube and a front fork, wherein the front fork comprises a top rod, an air guide column, and support rods located on both sides of the rear wheel, the bottoms of the top rod and the air guide column are connected to the support rods, and the top rod and the air guide column are spaced apart; A through hole is provided on the head tube, the push rod is inserted into the through hole, the air guide column is located on one side of the head tube, the thickness of the air guide column gradually decreases in the direction away from the head tube, and the outer wall of the air guide column smoothly transitions to the outer wall of the head tube.

2. The bicycle frame for reducing front fork wind resistance according to claim 1, characterized in that: The top ends of the two support rods are connected to form a platform on the top, the top rod is arranged on the platform, the air guide column is located on one side of the platform, and the bottom of the head pipe is in contact with the platform.

3. The bicycle frame for reducing front fork wind resistance according to claim 2, characterized in that: The bottom of the head pipe is a plane, and the platform is a plane; the outer side wall of the head pipe includes a front side wall, and the front side wall is a side wall of a cylinder, and the shape of the rear side wall of the air guide column matches the shape of the front side wall.

4. The bicycle frame for reducing front fork wind resistance according to claim 1, characterized in that: The width of the air guide column near the bottom gradually decreases in the direction close to the support rod.

5. The bicycle frame for reducing front fork wind resistance according to claim 1, characterized in that: The outer side wall of the air guide column transitions smoothly to the outer side wall of the support rod.

6. The bicycle frame for reducing front fork wind resistance according to claim 1, characterized in that: The outer side wall of the air guide column is a curved surface.

7. The bicycle frame for reducing front fork wind resistance according to claim 2, characterized in that: The top rod includes a column and a base connected to the bottom of the column, the base is connected to the support rod, the diameter of the outer wall of the base gradually decreases in the direction away from the platform, and the diameter of the base is larger than the diameter of the column.

8. The bicycle frame for reducing front fork wind resistance according to any one of claims 1 to 7, characterized in that: The bicycle frame further comprises an upper tube and a lower tube, one end of the upper tube is connected to the lower tube, and the head tube is arranged on the connection between the upper tube and the lower tube.

9. The bicycle frame for reducing front fork wind resistance according to claim 8, characterized in that: The outer side wall of the connection between the two support rods is an arc surface near the lower tube, and the side surface of the lower tube near the support rod is matched with the outer side wall of the connection between the two support rods.

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