Carbon fiber bicycle frame with high bending resistance

Abstract

The utility model discloses a carbon fiber bicycle frame that resists bending, relates to bicycle frame technical field, including main pole, upper support, lower support and sleeve, a plurality of groups of support column are installed to main pole one end, a plurality of groups support column outer wall swing installation limit disc, limit disc center end installation limit spring, and limit spring other end is connected with main pole inner wall, limit disc outer wall installation limit cylinder, and limit cylinder inner wall is swing connected with main pole outer wall. The utility model discloses through being provided with limit disc, limit spring and limit cylinder, when the bicycle frame bears the alternating bending stress in the bicycle driving process, if the bending stress is conducted to the main pole, makes the main pole one end to receive certain vibration, limit spring will vibrate and be absorbed to push limit disc and displace in proper order, and then drive limit cylinder and displace in proper order, will bending stress and be absorbed, has improved the bicycle frame bending -resistant performance.

Description

Technical Field

[0001] This utility model relates to the field of bicycle frame technology, specifically to a carbon fiber bicycle frame with strong bending resistance. Background Technology

[0002] Carbon fiber bicycles are high-performance bicycles made of carbon fiber composite materials, mainly used in components such as frames, forks, and wheelsets. They occupy an important position in the mid-to-high-end racing bicycle market. Carbon fiber has a low density and the overall weight of the bicycle is also lighter, which makes it easier for riders to control and reduces physical exertion. It is one of the top choices for professional riders and cycling enthusiasts.

[0003] Carbon fiber bicycle frames are the core components of bicycles, and their performance has a crucial impact on the riding experience. Carbon fiber is several times stronger than steel, and the frame can maintain lightweight while possessing excellent strength and rigidity. It can stably transmit power under conditions such as high-speed riding and emergency braking, ensuring riding safety.

[0004] In existing technology, during cycling, the frame is continuously subjected to alternating bending stress, such as the slight deformation of the frame caused by road bumps and the periodic force transmission when pedaling. Under repeated alternating stress, the resin layer of the carbon fiber frame will gradually develop micro cracks. As these cracks continue to expand, they will cause the carbon fiber filaments to separate from the resin, leading to fatigue fracture of the frame. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a carbon fiber bicycle frame with strong bending resistance to solve the technical problems mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a carbon fiber bicycle frame with strong bending resistance, comprising a main bar, an upper bracket, a lower bracket, and a sleeve, wherein the main bar and the sleeve are connected by the upper bracket and the lower bracket, and one end of the lower bracket is inclined. Multiple sets of support columns are installed at one end of the main bar. Limiting plates are movably installed on the outer wall of the multiple sets of support columns. A limiting spring is installed at the center end of the limiting plate, and the other end of the limiting spring is connected to the inner wall of the main bar. A limiting cylinder is installed on the outer wall of the limiting plate, and the inner wall of the limiting cylinder is movably connected to the outer wall of the main bar.

[0007] By adopting the above technical solution, the problem of poor bending resistance of bicycle frames is solved. When the bicycle frame is subjected to alternating bending stress during bicycle riding, if the bending stress is transmitted to the main bar, causing a certain vibration at one end of the main bar, the limiting spring and multiple sets of auxiliary springs will absorb the vibration, thereby pushing the limiting plate to move, which in turn drives the limiting cylinder to move, absorbing the bending stress and improving the bending resistance of the bicycle frame.

[0008] The present invention is further configured such that both ends of the limiting cylinder are inclined, and the inner wall of the limiting cylinder is covered with a rubber pad layer.

[0009] Preferably, when the limiting cylinder is displaced, the inner wall of the limiting cylinder and the outer wall of the main bar are protected.

[0010] The present invention is further configured such that a first limiting seat is installed on the upper outer wall of the limiting cylinder, and a second limiting seat is installed on the lower outer wall of the limiting cylinder.

[0011] Preferably, the displacement of the limiting cylinder causes the first limiting seat and the second limiting seat to move.

[0012] The present invention is further configured such that a first connecting rod is movably installed on the inner wall of the first limiting seat, and a second connecting rod is movably installed on the inner wall of the second limiting seat.

[0013] Preferably, when the first limiting seat moves, it causes one end of the first connecting rod to move, and when the second limiting seat moves, it causes one end of the second connecting rod to move.

[0014] The present invention is further configured such that a first movable cylinder is movably mounted on the outer wall of the upper support, a first movable seat is mounted on the outer wall of the first movable cylinder, and the other end of the first connecting rod is movably connected to the inner wall of the first movable seat.

[0015] Preferably, when one end of the first connecting rod is displaced, it causes the other end of the first connecting rod to be displaced, thereby causing the first movable seat to be displaced, and then causing the first movable cylinder to be displaced.

[0016] The present invention is further configured such that the two ends of the first movable cylinder are inclined, and the inner wall of the first movable cylinder is attached with a rubber pad layer.

[0017] Preferably, the two ends of the first movable cylinder are inclined to improve the movement effect of the first movable cylinder, and the rubber pad layer on the inner wall of the first movable cylinder protects the inner wall of the first movable cylinder and the outer wall of the upper support.

[0018] The present invention is further configured such that a second movable cylinder is movably installed on the outer wall of the lower support, a second movable seat is installed on the outer wall of the second movable cylinder, and the other end of the second connecting rod is movably connected to the inner wall of the second movable seat.

[0019] Preferably, when one end of the second connecting rod is displaced, it causes the other end of the second connecting rod to be displaced, thereby causing the second movable seat to be displaced, and then causing the second movable cylinder to be displaced.

[0020] The present invention is further configured such that the two ends of the second movable cylinder are inclined, and the inner wall of the second movable cylinder is provided with a rubber pad layer.

[0021] Preferably, the two ends of the second movable cylinder are inclined to improve the movement effect of the second movable cylinder, and the rubber pad layer on the inner wall of the second movable cylinder protects the inner wall of the second movable cylinder and the outer wall of the lower support.

[0022] The present invention is further configured such that all of the support columns are made of carbon fiber, and the inner wall of the limiting plate is covered with a rubber pad layer.

[0023] Preferably, the limiting plate moves on the outer wall of multiple sets of support columns, and the rubber pad layer protects the outer wall of multiple sets of support columns and the inner wall of the limiting plate.

[0024] The present invention is further configured such that auxiliary springs are provided around the outer walls of the multiple sets of support columns, and one end of each set of auxiliary springs is connected to the limiting plate.

[0025] Preferably, the arrangement of multiple auxiliary springs increases the transmission of corresponding forces, further improving the bending resistance.

[0026] In summary, the present invention has the following main advantages: This invention solves the problem of poor bending resistance of bicycle frames by setting a limiting plate, a limiting spring, and a limiting cylinder. When the bicycle frame is subjected to alternating bending stress during bicycle riding, if the bending stress is transmitted to the main bar, causing a certain vibration at one end of the main bar, the limiting spring absorbs the vibration, thereby pushing the limiting plate to move, which in turn drives the limiting cylinder to move, absorbing the bending stress and improving the bending resistance of the bicycle frame.

[0027] This utility model incorporates a limiting plate, support columns, and limiting springs. The outer walls of multiple sets of support columns are movably connected to the inner wall of the limiting plate, and each set of support columns is surrounded by an auxiliary spring. These auxiliary springs further transmit stress, thereby pushing the limiting plate to move and causing the limiting cylinder to move, increasing the limiting plate's stress absorption effect and further improving its bending resistance. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main bar in this utility model; Figure 2 This is a schematic diagram of the support column in this utility model; Figure 3 This is a schematic diagram of the limiting plate in this utility model; Figure 4 This is a schematic diagram showing the connection between the limiting cylinder and the first movable cylinder and the second movable cylinder in this utility model; Figure 5 This is an exploded view of the limiting cylinder, the first movable cylinder, and the second movable cylinder in this utility model.

[0029] Explanation of reference numerals in the attached figures: 1. Main bar; 2. Upper bracket; 3. Lower bracket; 4. Sleeve; 5. Support column; 6. Limiting plate; 7. Limiting spring; 8. Auxiliary spring; 9. Limiting cylinder; 10. First limiting seat; 11. Second limiting seat; 12. First movable cylinder; 13. First movable seat; 14. First connecting rod; 15. Second movable cylinder; 16. Second movable seat; 17. Second connecting rod. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of this utility model will be described below based on its overall structure.

[0032] A type of carbon fiber bicycle frame with high bending resistance, such as Figure 1 - Figure 5 As shown, it includes a main bar 1, an upper bracket 2, a lower bracket 3 and a sleeve 4. The upper bracket 2 and the lower bracket 3 are connected between the main bar 1 and the sleeve 4, and one end of the lower bracket 3 is inclined. Multiple sets of support columns 5 are installed at one end of the main bar 1. A limit plate 6 is movably installed on the outer wall of the multiple sets of support columns 5. A limit spring 7 is installed at the center end of the limit plate 6, and the other end of the limit spring 7 is connected to the inner wall of the main bar 1. A limit cylinder 9 is installed on the outer wall of the limit plate 6, and the inner wall of the limit cylinder 9 is movably connected to the outer wall of the main bar 1. The bending stress is transmitted to the main bar 1, causing one end of the main bar 1 to be subjected to a certain vibration. The limit spring 7 absorbs the vibration, thereby pushing the limit plate 6 to move, which in turn drives the limit cylinder 9 to move, absorbing the bending stress.

[0033] Please see Figure 1 - Figure 4 Both ends of the limiting cylinder 9 are inclined, and the inner wall of the limiting cylinder 9 is covered with a rubber pad. When the limiting cylinder 9 is displaced, it protects the inner wall of the limiting cylinder 9 and the outer wall of the main bar 1.

[0034] Please refer to Figure 1-2. A first limiting seat 10 is installed on the upper outer wall of the limiting cylinder 9, and a second limiting seat 11 is installed on the lower outer wall of the limiting cylinder 9. When the limiting cylinder 9 is displaced, it causes the first limiting seat 10 and the second limiting seat 11 to be displaced as well.

[0035] Please see Figure 4 - Figure 5A first connecting rod 14 is movably installed on the inner wall of the first limiting seat 10, and a second connecting rod 17 is movably installed on the inner wall of the second limiting seat 11. When the first limiting seat 10 is displaced, it causes one end of the first connecting rod 14 to be displaced. When the second limiting seat 11 is displaced, it causes one end of the second connecting rod 17 to be displaced.

[0036] Please see Figure 1 - Figure 5 The upper support 2 has a first movable cylinder 12 movably installed on its outer wall. The first movable seat 13 is installed on the outer wall of the first movable cylinder 12. The other end of the first connecting rod 14 is movably connected to the inner wall of the first movable seat 13. When one end of the first connecting rod 14 is displaced, it drives the other end of the first connecting rod 14 to be displaced, thereby driving the first movable seat 13 to be displaced, and then driving the first movable cylinder 12 to be displaced.

[0037] Please see Figure 4 - Figure 5 The first movable cylinder 12 is inclined at both ends, and the inner wall of the first movable cylinder 12 is covered with a rubber pad. The inclined arrangement of the two ends of the first movable cylinder 12 improves the movement effect of the first movable cylinder 12, and the rubber pad on the inner wall of the first movable cylinder 12 protects the inner wall of the first movable cylinder 12 and the outer wall of the upper support 2.

[0038] Please see Figure 1 - Figure 4 The lower support 3 has a second movable cylinder 15 movably installed on its outer wall. The second movable seat 16 is installed on the outer wall of the second movable cylinder 15. The other end of the second connecting rod 17 is movably connected to the inner wall of the second movable seat 16. When one end of the second connecting rod 17 moves, it drives the other end of the second connecting rod 17 to move, thereby driving the second movable seat 16 to move, and then driving the second movable cylinder 15 to move.

[0039] Please see Figure 4 - Figure 5 The two ends of the second movable cylinder 15 are inclined, and the inner wall of the second movable cylinder 15 is covered with a rubber pad. The inclined arrangement of the two ends of the second movable cylinder 15 improves the movement effect of the second movable cylinder 15, and the rubber pad on the inner wall of the second movable cylinder 15 protects the inner wall of the second movable cylinder 15 and the outer wall of the lower support 3.

[0040] Please see Figure 1 - Figure 3 All the support columns 5 are made of carbon fiber, and the inner wall of the limiting plate 6 is covered with a rubber pad. The limiting plate 6 moves on the outer wall of the support columns 5, and the rubber pad protects the outer wall of the support columns 5 and the inner wall of the limiting plate 6.

[0041] Please see Figure 2 - Figure 3Multiple sets of support columns 5 are all equipped with auxiliary springs 8 on their outer walls, and one end of each set of auxiliary springs 8 is connected to the limiting plate 6. The setting of multiple sets of auxiliary springs 8 increases the transmission of corresponding forces and further improves the bending resistance.

[0042] The working principle of this utility model is as follows: When the bicycle is in motion, the bicycle frame is subjected to alternating bending stress. If the bending stress is transmitted to the main bar 1, causing one end of the main bar 1 to vibrate, the limiting spring 7 and multiple sets of auxiliary springs 8 absorb the vibration, thereby pushing the limiting plate 6 to move, which in turn drives the limiting cylinder 9 to move, and then drives the first limiting seat 10 and the second limiting seat 11 to move. The first limiting seat 10 is movably connected to one end of the first connecting rod 14, and the other end of the first connecting rod 14 is movably connected to the first movable seat 13. The first limiting seat 10 drives one end of the first connecting rod 14 to move, thereby driving the first connecting... The other end of the connecting rod 14 is displaced, which in turn causes the first movable seat 13 to be displaced, and then causes the first movable cylinder 12 to be displaced on the outer wall of the upper bracket 2, thus dispersing some of the bending stress. The second limiting seat 11 is movably connected to one end of the second connecting rod 17, and the other end of the second connecting rod 17 is movably connected to the second movable seat 16. The second limiting seat 11 causes one end of the second connecting rod 17 to be displaced, which in turn causes the other end of the second connecting rod 17 to be displaced, which in turn causes the movable seat 15 to be displaced, and then causes the second movable cylinder 15 to be displaced on the outer wall of the lower bracket 3, thus dispersing the remaining bending stress, thereby reducing the bending stress borne by the frame and improving the frame's bending resistance.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A carbon fiber bicycle frame with strong bending resistance, comprising a main bar (1), an upper bracket (2), a lower bracket (3), and a sleeve (4), characterized in that: The main bar (1) and the sleeve (4) are connected by an upper bracket (2) and a lower bracket (3), and one end of the lower bracket (3) is inclined. Multiple sets of support columns (5) are installed at one end of the main bar (1). A limiting plate (6) is movably installed on the outer wall of the multiple sets of support columns (5). A limiting spring (7) is installed at the center end of the limiting plate (6), and the other end of the limiting spring (7) is connected to the inner wall of the main bar (1). A limiting cylinder (9) is installed on the outer wall of the limiting plate (6), and the inner wall of the limiting cylinder (9) is movably connected to the outer wall of the main bar (1).

2. The carbon fiber bicycle frame with high bending resistance according to claim 1, characterized in that: Both ends of the limiting cylinder (9) are inclined, and the inner wall of the limiting cylinder (9) is covered with a rubber pad layer.

3. The carbon fiber bicycle frame with high bending resistance according to claim 1, characterized in that: The upper outer wall of the limiting cylinder (9) is equipped with a first limiting seat (10), and the lower outer wall of the limiting cylinder (9) is equipped with a second limiting seat (11).

4. A carbon fiber bicycle frame with high bending resistance according to claim 3, characterized in that: The first connecting rod (14) is movably installed on the inner wall of the first limiting seat (10), and the second connecting rod (17) is movably installed on the inner wall of the second limiting seat (11).

5. A carbon fiber bicycle frame with high bending resistance according to claim 4, characterized in that: The upper support (2) is movably mounted on the outer wall of the first movable cylinder (12), and the outer wall of the first movable cylinder (12) is mounted on the first movable seat (13), and the other end of the first connecting rod (14) is movably connected to the inner wall of the first movable seat (13).

6. A carbon fiber bicycle frame with high bending resistance according to claim 5, characterized in that: The first movable cylinder (12) is inclined at both ends, and the inner wall of the first movable cylinder (12) is covered with a rubber pad layer.

7. A carbon fiber bicycle frame with high bending resistance according to claim 4, characterized in that: The lower support (3) has a second movable cylinder (15) movably installed on its outer wall. The second movable cylinder (15) has a second movable seat (16) installed on its outer wall. The other end of the second connecting rod (17) is movably connected to the inner wall of the second movable seat (16).

8. A carbon fiber bicycle frame with high bending resistance according to claim 7, characterized in that: The second movable cylinder (15) is inclined at both ends, and the inner wall of the second movable cylinder (15) is covered with a rubber pad layer.

9. A carbon fiber bicycle frame with high bending resistance according to claim 1, characterized in that: All of the support columns (5) are made of carbon fiber, and the inner wall of the limiting plate (6) is covered with a rubber pad.

10. A carbon fiber bicycle frame with high bending resistance according to claim 9, characterized in that: Each of the multiple sets of support columns (5) is provided with an auxiliary spring (8) on its outer wall, and one end of each of the multiple sets of auxiliary springs (8) is connected to the limiting plate (6).

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