Bicycle frame with low wind resistance

Abstract

The utility model relates to the technical field of bicycles, and discloses a low-wind-resistance bicycle frame which is composed of an inclined pipe frame, a transverse pipe frame, a front fork pipe frame, a cushion pipe frame and a rear fork pipe frame, the cushion pipe frame is fixedly installed at one end of the inclined pipe frame and one end of the transverse pipe frame, the front fork pipe frame is fixedly installed at the other end of the inclined pipe frame and the other end of the transverse pipe frame, and the rear fork pipe frame is fixedly installed at the other end of the cushion pipe frame. Limiting assemblies are embedded in the surfaces of the inclined pipe frame and the rear fork pipe frame, and embedding holes corresponding to the limiting assemblies are formed in the surfaces of the inclined pipe frame and the rear fork pipe frame. A brake cable is inserted into the inclined tube frame from the limiting assembly at one end of the inclined tube frame and is inserted out of the limiting assembly at one end of the rear fork tube frame, and hiding of the brake cable is achieved. Wherein the inclined pipe sleeve is obliquely arranged at a small angle (10-30 degrees), so that the included angle between the brake cable and the inclined pipe frame is reduced, and the wind resistance is reduced during riding; meanwhile, the inner wall of the inclined pipe sleeve locks and fixes the brake cable through the elastic piece, it is guaranteed that the brake cable cannot be pulled out easily, and then the riding comfort degree is improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, specifically to a low-drag bicycle frame. Background Technology

[0002] As is well known, bicycle frames typically consist of a front triangle and a rear triangle. Bicycle frames can be made from tubular components of different materials, such as steel, aluminum, titanium, and elastic fibers.

[0003] To reduce drag during riding, conventional bicycle frames typically embed the brake cable at the bottom of the frame. However, having the brake cable exposed can also increase drag. Some frames conceal the brake cable inside the frame, but when the brake cable is inserted into the frame, it forms a 60°-80° angle with the frame, resulting in additional drag. Furthermore, as the handlebars rotate, the brake cable is pulled outwards, and if it becomes too long, it will negatively impact the riding experience. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a low-wind-resistance bicycle frame that has the advantages of concealing brake cables and reducing wind resistance, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned purpose of concealing brake lines and reducing wind resistance, this utility model provides the following technical solution: a low-wind-resistance bicycle frame, comprising a slant tube frame, a cross tube frame, a fork tube frame, a saddle tube frame, and a rear fork tube frame. The saddle tube frame is fixedly installed at one end of the slant tube frame and the cross tube frame, and the fork tube frame is fixedly installed at the other end of the slant tube frame and the cross tube frame. Limiting components are embedded in the surfaces of the slant tube frame and the rear fork tube frame, and corresponding insertion holes are formed on the surfaces of the slant tube frame and the rear fork tube frame.

[0008] Preferably, the limiting component includes an insert, a panel is fixedly mounted on the surface of the insert, the length and width of the panel are greater than the length and width of the insert, the insert has an oblique hole inside, and the two ends of the oblique hole are connected to a circular groove.

[0009] Preferably, an inclined tube sleeve is embedded inside the inclined hole, and a circular plate is fixedly installed at both ends of the inclined tube sleeve. The circular plate is embedded in the circular groove. Two sets of symmetrically arranged elastic elements are fixedly installed on the inner wall of the inclined tube sleeve, and a brake line is installed in the inclined tube sleeve by means of the elastic elements.

[0010] Preferably, the elastic element is V-shaped, with a flat bottom, and the elastic element is arranged in a ring at equal intervals.

[0011] Preferably, the insert has an internal mounting groove, a spring is installed inside the mounting groove, a limit plate is fixedly installed at one end of the spring, and a stepped clip is fixedly installed on the side of the limit plate. There are two stepped clips, which are arranged symmetrically at the top and bottom.

[0012] Preferably, the insert is engaged with the edge of the insertion hole of the inclined tube frame via a stepped locking head.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a low wind resistance bicycle frame, which has the following beneficial effects:

[0015] 1. This low-drag bicycle frame features a brake cable that is inserted into a limiting component at one end of the slant tube frame and exits from a limiting component at the other end of the rear fork tube frame, thus concealing the brake cable. The slant tube sleeve is designed with a small angle (10°-30°) to ensure that the angle between the brake cable and the slant tube frame is also small, thereby reducing wind resistance during riding. At the same time, the inner wall of the slant tube sleeve is secured to the brake cable with an elastic element to ensure that the brake cable cannot be easily pulled out, thereby improving riding comfort.

[0016] 2. In this low-drag bicycle frame, the stepped clip is first squeezed back into the mounting groove, then the insert is embedded in the mounting hole, and then the spring pushes the stepped clip to lock onto the wall of the mounting hole, thereby fixing the limiting component to the frame. The stepped clip has multiple steps, which can be well adapted to different tube wall thicknesses, thus ensuring that the limiting component will not easily shake after installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the vehicle frame structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the inclined tube frame and limiting assembly of this utility model;

[0019] Figure 3 This is an exploded structural diagram of the inclined tube frame and limiting component of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the inclined tube frame and limiting component of this utility model;

[0021] Figure 5 This is an exploded structural diagram of the limiting component of this utility model;

[0022] Figure 6 This is a cross-sectional structural diagram of the limiting component of this utility model;

[0023] Figure 7 This is a cross-sectional exploded view of the limiting component of this utility model;

[0024] Figure 8 This utility model Figure 4 A schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Diagonal tube frame; 2. Cross tube frame; 3. Front fork tube frame; 4. Saddle tube frame; 5. Rear fork tube frame; 6. Limiting component; 7. Insert hole; 61. Insert block; 62. Panel; 63. Diagonal hole; 64. Circular groove; 65. Diagonal tube sleeve; 66. Circular plate; 67. Elastic element; 68. Brake cable; 69. Mounting slot; 610. Spring; 611. Limiting plate; 612. Stepped clip. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 A low-drag bicycle frame comprises a slant tube frame 1, a cross tube frame 2, a fork tube frame 3, a saddle tube frame 4, and a rear fork tube frame 5. The frame can be made of carbon fiber or aluminum alloy and features a streamlined design to reduce wind resistance during riding. The saddle tube frame 4 is fixedly installed at one end of the slant tube frame 1 and the cross tube frame 2, while the fork tube frame 3 is fixedly installed at the other end. Limiting components 6 are embedded in the surfaces of the slant tube frame 1 and the rear fork tube frame 5 for securing the cables. The surfaces of the slant tube frame 1 and the rear fork tube frame 5 have corresponding recessed holes 7. The limiting components 6 are entirely concealed within the recessed holes 7, ensuring a smooth frame surface and further reducing wind resistance during riding.

[0028] Please see Figure 5-8 The limiting component 6 includes an insert 61, on the surface of which a panel 62 is fixedly mounted. The length and width of the panel 62 are greater than the length and width of the insert 61. The insert 61 is embedded in the insert hole 7, and the panel 62 presses against the surface of the frame tube. The insert 61 has an inclined hole 63 inside, with an inclination angle of 10-30° to ensure that the angle between the line and the frame is reduced, thereby indirectly reducing wind resistance. The two ends of the inclined hole 63 are connected to a circular groove 64.

[0029] Please see Figure 5-8An inclined tube sleeve 65 is embedded inside the inclined hole 63. The inclined tube sleeve 65 is inclined at an angle of 10-30°. Circular plates 66 are fixedly installed at both ends of the inclined tube sleeve 65, and the circular plates 66 are embedded in the circular groove 64. Two sets of symmetrically arranged elastic elements 67 are fixedly installed on the inner wall of the inclined tube sleeve 65. The elastic elements 67 are V-shaped, with a flat bottom. Several elastic elements 67 are arranged in a ring with equal spacing. A brake cable 68 is installed in the inclined tube sleeve 65 through the elastic elements 67. The brake cable 68 is inserted into the inclined tube sleeve 65, ensuring that the brake cable 68 is also inclined at 10-30°, thereby reducing the wind resistance of the frame.

[0030] Please see Figure 5-8 The insert 61 has an internal mounting groove 69, and a spring 610 is installed inside the mounting groove 69. A limiting plate 611 is fixedly installed at one end of the spring 610, and a stepped clip 612 is fixedly installed on the side of the limiting plate 611. There are two stepped clips 612, which are arranged symmetrically at the top and bottom. The number of steps of the stepped clips 612 is set to make it easy to adapt to the thickness of the frame tube wall. The insert 61 is engaged with the edge of the hole 7 of the slant tube frame 1 through the stepped clips 612. Since the bicycle is a long-term riding tool, the limiting component 6 is embedded in the frame tube and does not need to be disassembled and removed.

[0031] Working principle: During use, the brake cable 68 is inserted into the limiting component 6 at one end of the slant tube frame 1 and out of the limiting component 6 at the other end of the rear fork tube frame 5, thus concealing the brake cable 68 and reducing wind resistance during riding. The slant tube sleeve 65 is set at a small angle (10°-30°) to ensure that the angle between the brake cable 68 and the slant tube frame 1 is also small, thereby reducing wind resistance during riding. At the same time, the inner wall of the slant tube sleeve 65 is locked with the brake cable 68 by the elastic element 67 to ensure that the brake cable 68 will not be easily pulled out, thereby improving riding comfort.

[0032] First, the stepped clip 612 is squeezed back into the mounting slot 69, then the insert 61 is embedded in the mounting hole 7, and then the spring 610 pushes the stepped clip 612 to lock onto the hole wall of the mounting hole 7, thereby fixing the limiting component 6 onto the frame. The stepped clip 612 has multiple steps, which can be well adapted to different wall thicknesses of the vehicle tube, thus ensuring that the limiting component 6 will not easily shake after installation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low wind resistance bicycle frame consisting of a sloping tube frame (1), a cross tube frame (2), a front fork tube frame (3), a seat tube frame (4) and a rear fork tube frame (5), characterized in that: The seat frame (4) is fixedly installed at one end of the slant frame (1) and the cross frame (2), and the front fork frame (3) is fixedly installed at the other end of the slant frame (1) and the cross frame (2). The surfaces of the slant frame (1) and the rear fork frame (5) are provided with limiting components (6), and the surfaces of the slant frame (1) and the rear fork frame (5) are provided with recessed holes (7) corresponding to the limiting components (6). The limiting component (6) includes an insert (61), and a panel (62) is fixedly installed on the surface of the insert (61). The length and width of the panel (62) are greater than the length and width of the insert (61). An oblique hole (63) is provided inside the insert (61), and a circular groove (64) is provided at both ends of the oblique hole (63). An inclined tube sleeve (65) is embedded inside the inclined hole (63). A circular plate (66) is fixedly installed at both ends of the inclined tube sleeve (65). The circular plate (66) is embedded in the circular groove (64). Two sets of symmetrically arranged elastic elements (67) are fixedly installed on the inner wall of the inclined tube sleeve (65). A brake line (68) is installed on the inclined tube sleeve (65) by means of the elastic elements (67). The insert (61) has an installation groove (69) inside, and a spring (610) is installed inside the installation groove (69). A limiting plate (611) is fixedly installed at one end of the spring (610), and a stepped clip (612) is fixedly installed on the side of the limiting plate (611). There are two stepped clips (612), which are arranged symmetrically at the top and bottom.

2. A low-drag bicycle frame as claimed in claim 1, characterised in that: The elastic element (67) has a V-shaped shape, with a flat bottom. There are several elastic elements (67) arranged in a ring at equal intervals.

3. A low-drag bicycle frame as defined in claim 1, wherein: The insert (61) is engaged with the edge of the hole (7) of the inclined tube frame (1) by means of the stepped clip (612).

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