Folding carbon fiber bicycle frame

Abstract

The utility model discloses a folding type carbon fiber bicycle frame, which relates to the technical field of bicycle frames and comprises a first folding main lever, a second folding main lever is arranged at one end of the first folding main lever, and the first folding main lever and the second folding main lever are rotatably connected through a folding hinge. The first folding main bar and the second folding main bar are locked and fixed through a lock catch handle, stabilizing inserting grooves are formed in the upper surfaces of one ends of the first folding main bar and the second folding main bar correspondingly, stabilizing assemblies are arranged at the upper ends of the stabilizing inserting grooves, and water cup holders are arranged at the upper ends of the first folding main bar and the second folding main bar correspondingly. According to the scheme, the problems that after an existing folding type bicycle frame is folded, a fixing structure is lacked, two folding main levers need to be taken at the same time when the folding type bicycle frame is taken and carried in the folding state, otherwise, the phenomenon that one folding main lever rotates is likely to occur, and consequently taking and carrying are inconvenient and stability is poor after the folding type bicycle frame is folded are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle frames, in particular to a folding carbon fiber bicycle frame. Background Art

[0002] A folding bicycle frame is a bicycle structure designed specifically for portability and flexibility, with a foldable structure that facilitates carrying and storage;

[0003] For example, the Chinese patent with the publication number CN209719814U (a reinforced folding bicycle frame): It includes a frame body, on which a first main bar and a second main bar are provided. One end of the first main bar is hinged to one end of the second main bar. Cylindrical holes are respectively opened at the corresponding ends of the second main bar and the first main bar. An activity bar is inserted through the holes. A rotating ring is sleeved outside the activity bar. The rotating ring is threadedly connected to the activity bar and is arranged on the second main bar and rotatably connected to the second main bar. A fixed seat is provided at the end of the first main bar corresponding to the second main bar. An activity seat is slidably connected to the fixed seat. One side of the activity seat is connected to one side of the fixed seat through a tension spring, and the other side of the activity seat is rotatably connected to one side of a clamping block. The reinforced folding bicycle frame adopts the structural design of the activity bar, which can form a plug-in effect to strengthen the rotating and folding part of the folding bicycle frame and improve the strength of the connection part, making it more stable.

[0004] However, after the existing folding bicycle frames are folded, there is a lack of a fixing structure. When taking and carrying them in the folded state, it is necessary to take two folding main bars at the same time, otherwise one of the folding main bars is likely to rotate, resulting in inconvenience in taking and carrying after folding and poor stability. Therefore, it does not meet the existing requirements, and for this reason, we propose a folding carbon fiber bicycle frame. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a folding carbon fiber bicycle frame to solve the problem that after the existing folding bicycle frames are folded, there is a lack of a fixing structure. When taking and carrying them in the folded state, it is necessary to take two folding main bars at the same time, otherwise one of the folding main bars is likely to rotate, resulting in inconvenience in taking and carrying after folding and poor stability as mentioned in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A folding carbon fiber bicycle frame, comprising: a first folding main bar, one end of the first folding main bar is provided with a second folding main bar, the first folding main bar and the second folding main bar are rotationally connected through a folding hinge, the first folding main bar and the second folding main bar are locked and fixed through a lock handle, the upper surfaces of one ends of the first folding main bar and the second folding main bar are both provided with stable slots, a stable component is arranged at the upper end of the stable slots, and water cup holders are arranged at the upper ends of the first folding main bar and the second folding main bar.

[0007] Preferably, the stable component includes a stable insertion frame, and both ends of the stable insertion frame are respectively inserted into the stable slots inside the first folding main bar and the second folding main bar, and a rubber sleeve is arranged on the inner bottom surface of the stable slots.

[0008] Preferably, a first fixing sleeve is welded to the outside of one end of the cross bar of the stable insertion frame, a second fixing sleeve is welded to the outside of the other end of the cross bar of the stable insertion frame, and suspension frames are welded on both sides between the first fixing sleeve and the second fixing sleeve.

[0009] Preferably, a fixed side plate is heat-melted at the bottom end of the water cup holder, both ends of the fixed side plate are fixed to the first folding main bar and the second folding main bar through fixing screws, and both the water cup holder and the fixed side plate are made of carbon fiber material.

[0010] Preferably, a seat frame is arranged at the other end of the first folding main bar, a head frame is arranged at the other end of the second folding main bar, two wheel frames are adhesively bonded to the outer surface of the other end of the first folding main bar, and a reinforcing frame is adhesively bonded between one end of the wheel frame and the bottom end of the seat frame.

[0011] Preferably, the first folding main bar, the second folding main bar, the wheel frame, the reinforcing frame, the seat frame and the head frame are all made of carbon fiber material.

[0012] Preferably, the stable insertion frame is in a U shape, and the stable insertion frame is made of stainless steel material.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. The utility model is provided with stable slots on the upper surfaces of one ends of the first folding main bar and the second folding main bar respectively. When folding and storing is required, the stable component is removed, the first folding main bar and the second folding main bar are loosened by the lock handle, and rotated by using the folding hinge. After the first folding main bar and the second folding main bar are folded and in contact, the stable plug is inserted again. The first folding main bar and the second folding main bar are limited by the stable plug, so as to avoid loose rotation, facilitate taking and carrying after folding, improve stability and convenience, and solve the problem that the existing folding bicycle frame lacks a fixing structure after folding. When taking and carrying in the folded state, it is necessary to take two folding main bars at the same time, otherwise one of the folding main bars is likely to rotate, resulting in inconvenient taking and carrying after folding and poor stability.

[0015] 2. By respectively arranging a first fixing sleeve and a second fixing sleeve at both ends of the cross bar of the stable plug, suspension frames are welded on both sides between the first fixing sleeve and the second fixing sleeve. Multiple objects with hooks can be suspended through the suspension frames, improving the storage capacity of the bicycle. And when riding, two water cups can be fixed by two water cup holders, improving the convenience of carrying multiple water cups. Fixed by fixing screws, it is convenient to disassemble and replace the water cup holders. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the utility model;

[0017] Figure 2 is the overall top view structural schematic diagram of the utility model;

[0018] Figure 3 is the top view structural schematic of the upper surfaces of the first folding main bar and the second folding main bar of the utility model;

[0019] Figure 4 is the structural schematic diagram of the stable component of the utility model;

[0020] In the figure: 1. First folding main bar; 2. Second folding main bar; 3. Folding hinge; 4. Wheel frame; 5. Reinforcing frame; 6. Seat frame; 7. Head frame; 8. Stable component; 9. Water cup holder; 10. Fixed side plate; 11. Fixing screw; 12. Lock handle; 13. Stable slot; 14. Rubber sleeve; 15. Stable plug; 16. Suspension frame; 17. First fixing sleeve; 18. Second fixing sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] Please refer to Figures 1-4 For an embodiment provided by the present utility model: a folding carbon fiber bicycle frame, comprising: a first folding main bar 1, a second folding main bar 2 is provided at one end of the first folding main bar 1, the first folding main bar 1 and the second folding main bar 2 are rotatably connected by a folding hinge 3, the first folding main bar 1 and the second folding main bar 2 are locked and fixed by a lock handle 12, a seat frame 6 is provided at the other end of the first folding main bar 1, a head frame 7 is provided at the other end of the second folding main bar 2, a wheel frame 4 is adhesively bonded to the outer surface of the other end of the first folding main bar 1, and two wheel frames 4 are provided. A reinforcing frame 5 is adhesively bonded between one end of the wheel frame 4 and the bottom end of the seat frame 6. The first folding main bar 1, the second folding main bar 2, the wheel frame 4, the reinforcing frame 5, the seat frame 6 and the head frame 7 are all made of carbon fiber material. The overall hardness is improved by the carbon fiber material, and the overall weight is reduced, which is convenient for folding and carrying. On the upper surfaces of one ends of the first folding main bar 1 and the second folding main bar 2, stable slots 13 are provided, and a stable component 8 is provided at the upper end of the stable slots 13. The stable component 8 includes a stable plug 15, and both ends of the stable plug 15 are respectively inserted into the stable slots 13 of the first folding main bar 1 and the second folding main bar 2. A rubber sleeve 14 is provided on the inner bottom surface of the stable slots 13. The shape of the stable plug 15 is U-shaped, and the stable plug 15 is made of stainless steel material.

[0023] When folding and storing is required, remove the stable component 8, loosen the first folding main bar 1 and the second folding main bar 2 through the lock handle 12, and rotate using the folding hinge 3. When the first folding main bar 1 and the second folding main bar 2 are folded and in contact, reinsert the stable plug 15, and rely on the stable plug 15 to limit the first folding main bar 1 and the second folding main bar 2, so as to avoid loose rotation, which is convenient for taking and carrying after folding, and improves stability and convenience.

[0024] Please refer to Figure 1 、 4 A first fixing sleeve 17 is welded to the outside of one end of the cross bar of the stable plug 15, a second fixing sleeve 18 is welded to the outside of the other end of the cross bar of the stable plug 15, and suspension frames 16 are welded on both sides between the first fixing sleeve 17 and the second fixing sleeve 18. Multiple objects with hooks can be suspended through the suspension frames 16, which improves the storage capacity of the bicycle.

[0025] Please refer to Figure 1 、 2, a fixed side plate 10 is heat-melted at the bottom end of the water cup holder 9. Both ends of the fixed side plate 10 are fixed to the first folding main bar 1 and the second folding main bar 2 through fixing screws 11. The water cup holder 9 and the fixed side plate 10 are both made of carbon fiber material. When riding, two water cups can be fixed by the two water cup holders 9, improving the convenience of carrying multiple water cups. Fixed by the fixing screws 11, it is convenient to disassemble and replace the water cup holder 9.

[0026] Working principle: When in use, the first folding main bar 1 and the second folding main bar 2 rotate through the folding hinge 3 and are locked and fixed by the lock handle 12. This is the existing folding technology of the folding bicycle frame. Insert both ends of the stable plug 15 into the stable slots 13 of the first folding main bar 1 and the second folding main bar 2 respectively, and rely on the rubber sleeve 14 for extrusion fixation to avoid falling off during bumps while riding, improving stability. And through the suspension rack 16, multiple objects with hooks can be suspended, improving the storage capacity of the bicycle. When riding, two water cups can be fixed by the two water cup holders 9, improving the convenience of carrying multiple water cups. When folding and storing is needed, remove the stable component 8, loosen the first folding main bar 1 and the second folding main bar 2 through the lock handle 12, and rotate using the folding hinge 3. When the first folding main bar 1 and the second folding main bar 2 are folded and in contact, re-insert the stable plug 15, and rely on the stable plug 15 to limit the first folding main bar 1 and the second folding main bar 2, thus avoiding loose rotation, facilitating taking and carrying after folding, and improving stability and convenience.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A foldable carbon fiber bicycle frame, including a first folding main bar (1), one end of the first folding main bar (1) is provided with a second folding main bar (2), the first folding main bar (1) and the second folding main bar (2) are rotationally connected through a folding hinge (3), and the first folding main bar (1) and the second folding main bar (2) are locked and fixed through a lock handle (12), characterized in that: On the upper surfaces of one ends of the first folding main rod (1) and the second folding main rod (2), stable slots (13) are provided. At the upper ends of the stable slots (13), stable components (8) are provided. On the upper ends of the first folding main rod (1) and the second folding main rod (2), cup holders (9) are provided.

2. The foldable carbon fiber bicycle frame according to claim 1, wherein: The stable component (8) includes a stable insertion frame (15), and both ends of the stable insertion frame (15) are respectively inserted into the stable slots (13) of the first folding main rod (1) and the second folding main rod (2). A rubber sleeve (14) is provided on the inner bottom surface of the stable slot (13).

3. A foldable carbon fiber bicycle frame according to claim 2, wherein: On the outer side of one end of the crossbar of the stable insertion frame (15), a first fixing sleeve (17) is welded. On the outer side of the other end of the crossbar of the stable insertion frame (15), a second fixing sleeve (18) is welded. On both sides between the first fixing sleeve (17) and the second fixing sleeve (18), suspension frames (16) are welded.

4. A foldable carbon fiber bicycle frame according to claim 1, wherein: At the bottom end of the cup holder (9), a fixed side plate (10) is heat-melted. Both ends of the fixed side plate (10) are fixed to the first folding main rod (1) and the second folding main rod (2) through fixing screws (11). Both the cup holder (9) and the fixed side plate (10) are made of carbon fiber material.

5. A foldable carbon fiber bicycle frame according to claim 1, wherein: At the other end of the first folding main rod (1), a seat frame (6) is provided. At the other end of the second folding main rod (2), a head frame (7) is provided. On the outer surface of the other end of the first folding main rod (1), a wheel frame (4) is adhered, and there are two wheel frames (4). Between one end of the wheel frame (4) and the bottom end of the seat frame (6), a reinforcing frame (5) is adhered.

6. The foldable carbon fiber bicycle frame according to claim 5, wherein: The first folding main rod (1), the second folding main rod (2), the wheel frame (4), the reinforcing frame (5), the seat frame (6) and the head frame (7) are all made of carbon fiber material.

7. A folding carbon fiber bicycle frame according to claim 2, wherein: The shape of the stable insertion frame (15) is U-shaped, and the stable insertion frame (15) is made of stainless steel material.

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