Carbon fiber bicycle folding frame

Abstract

A carbon fiber bicycle folding frame comprises a frame body, a frame head tube, a front fork, a rear fork and a folding structure. The front end of the frame body is hinged to one end of the folding structure, and the rear end of the frame body is fixedly connected with one end of the rear fork. The other end of the folding structure is hinged to the rear end of the frame head tube, and the front end of the frame head tube is rotationally connected with one end of the front fork. The front end of the frame body and the rear end of the frame head tube are each provided with an integrally-formed groove, and the grooves are matched with the folding structures in shape. The space occupied by the carbon fiber bicycle is reduced through the folding structure, the utilization rate of the storage space of the carbon fiber bicycle and the carrying convenience degree are improved, and the stability and safety of the folding frame of the carbon fiber bicycle are further improved after the folding frame of the carbon fiber bicycle is unfolded.

Description

Technical Field

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

[0002] Conventional bicycles often utilize a one-piece carbon fiber frame. Carbon fiber bicycle frames are extremely lightweight, offering advantages such as high strength, low weight, excellent shock absorption, and good corrosion resistance. Furthermore, the wheels on these frames are easily assembled and disassembled, making them highly suitable for cycling. However, the frame is a key component that affects the storage space occupied by the entire bicycle. Because one-piece frames cannot be folded, bicycles take up a large amount of space when stored and are inconvenient to carry.

[0003] Therefore, it is hoped that a carbon fiber folding bicycle frame can solve the problems existing in the prior art. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] In view of the shortcomings and deficiencies of the existing technology, the utility model provides a carbon fiber folding bicycle frame, which utilizes a folding structure to reduce the space occupied by the frame, improve the space utilization rate of bicycle storage and the convenience of carrying, and further enhance the stability and safety of the folding bicycle frame after it is opened.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model adopts a carbon fiber folding bicycle frame, which includes a frame body, a frame head tube, a front fork, a rear fork and a folding structure; the front end of the frame body is hingedly connected to one end of the folding structure, and the rear end of the frame body is fixedly connected to one end of the rear fork; the other end of the folding structure is hingedly connected to the rear end of the frame head tube, and the front end of the frame head tube is rotatably connected to one end of the front fork; the front end of the frame body and the rear end of the frame head tube are respectively provided with integrally formed grooves, and the grooves are matched with the folding structure; by locking or loosening the folding structure, the frame body and the frame head tube are kept in a locked state or a folded state.

[0008] The utility model discloses a foldable carbon fiber bicycle frame which uses a folding structure to fold the carbon fiber bicycle frame, thereby reducing the space occupied by the carbon fiber bicycle frame, improving the utilization rate of the storage space of the carbon fiber bicycle and the convenience of carrying, and further improving the stability and safety of the foldable bicycle frame after it is opened.

[0009] Preferably, the folding structure includes: a locking mechanism, a hinge structure, and an anti-loosening structure; one end of the locking mechanism is hinged to the front end of the frame main body, and the other end of the locking mechanism is detachably connected to the rear end of the frame head tube; one end of the hinge structure is hinged to the front end of the frame main body, and the other end is hinged to the rear end of the frame head tube; a part of the anti-loosening structure is fixedly arranged at the rear end of the frame head tube, and the other part of the anti-loosening structure is fixedly arranged at the other end of the locking mechanism, and the two parts of the anti-loosening structure can be locked with each other.

[0010] Preferably, the hinge structure includes a first shaft, a second shaft, and a connecting structure; the first shaft and the second shaft are arranged in parallel; the connecting structure is integrally in an I shape; the first shaft is rotatably inserted through one end of the connecting structure, and its two ends are hinged to the rear end of the frame head tube; the second shaft is rotatably inserted through the other end of the connecting structure, and its two ends are hinged to the front end of the frame main body.

[0011] Preferably, the locking mechanism includes a third shaft, a fourth shaft, a locking handle, and a connecting plate in an F shape; the third shaft is in a T shape, and it is detachably connected to a short side of the locking handle and is inserted through the rear end of the frame head tube; the fourth shaft is inserted through the other short side of the locking handle and is hinged to the front end of the frame main body; the connecting plate is respectively connected to one end of the first shaft and the third shaft, and one end of the second shaft and the fourth shaft.

[0012] Preferably, the anti-loosening structure includes a dovetail groove, a dovetail slider, and an elastic unit; the dovetail groove is fixedly connected to the long side of the locking handle; the elastic unit is fixedly connected to the rear end of the frame head tube; the dovetail slider is detachably slidably connected to the dovetail groove under the drive of the elastic unit.

[0013] Preferably, the frame main body further includes a connecting rod and a sleeve; the connecting rod is arranged vertically at the rear end of the frame main body to adjust and connect the seat; the sleeve is perpendicular to the frame main body in the horizontal direction and is arranged at the lower part of the frame main body to rotatably connect the main shaft of the foot pedal.

[0014] Preferably, the frame head tube further includes a front fork sleeve, and the front fork sleeve is arranged vertically at the front end of the frame head tube to rotatably connect one end of the front fork.

[0015] Preferably, the front fork is in an inverted V-shaped structure, and a front fork magnetic attraction is arranged at its lower end.

[0016] Preferably, the rear fork is in an inverted V-shaped structure, and a rear fork magnetic attraction is arranged at its lower end.

[0017] Preferably, the lower end of the connecting rod is connected to the sleeve.

[0018] (III) Beneficial effects

[0019] The utility model provides a folding carbon fiber bicycle frame, which has the following beneficial effects:

[0020] The folding structure enables the carbon fiber bicycle frame to have stable folding and unfolding functions. The folded carbon fiber bicycle frame improves the utilization rate of the carbon fiber bicycle storage space and the convenience of carrying. The unfolded carbon fiber bicycle frame further improves the stability and safety of the folded carbon fiber bicycle frame after it is unfolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a three-dimensional structural schematic diagram of a carbon fiber folding bicycle frame.

[0022] Figure 2 The utility model is a front view of a carbon fiber folding bicycle frame.

[0023] Figure 3 The utility model is a side view of a carbon fiber folding bicycle frame.

[0024] Figure 4 The utility model is a bottom view of a carbon fiber folding bicycle frame.

[0025] Figure 5 The utility model is a rear view of a carbon fiber folding bicycle frame.

[0026] Figure 6 The utility model is a front view of a loose-leaf structure, a locking mechanism and an anti-loosening structure of a carbon fiber folding bicycle frame.

[0027] Figure 7 The utility model is a left side view of a loose-leaf structure, a locking mechanism and an anti-loosening structure of a carbon fiber folding bicycle frame.

[0028] Figure 8 The utility model is a bottom view of a loose-leaf structure, a locking mechanism and an anti-loosening structure of a carbon fiber folding bicycle frame.

[0029] Figure 9 The utility model is a rear view of a loose-leaf structure, a locking mechanism and an anti-loosening structure of a carbon fiber folding bicycle frame.

[0030] [Description of Reference Numerals]

[0031] 1: Frame body; 2: Frame head tube; 2.1: Front fork sleeve; 3: Sleeve; 4: Front fork; 4.1: Front fork magnet; 5: Rear fork; 5.1: Rear fork magnet; 6: Connecting rod; 7: Locking mechanism; 7.1: Third axis; 7.2: Fourth axis; 7.3: Locking handle; 7.4: Connecting lever; 8: Loose-leaf structure; 8.1: First axis; 8.2: Second axis; 8.3: Connecting structure; 9: Anti-loosening structure; 9.1: Dovetail groove; 9.2: Dovetail slider. DETAILED DESCRIPTION

[0032] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The orientation is referenced.

[0033] The utility model discloses a folding carbon fiber bicycle frame, which comprises a frame body, a frame head tube, a front fork, a rear fork and a folding structure; the front end of the frame body is hingedly connected to one end of the folding structure, and the rear end of the frame body is fixedly connected to one end of the rear fork; the other end of the folding structure is hingedly connected to the rear end of the frame head tube, and the front end of the frame head tube is rotatably connected to one end of the front fork; the front end of the frame body and the rear end of the frame head tube are respectively provided with integrally formed grooves, and the grooves are matched with the folding structure; by locking or loosening the folding structure, the frame body and the frame head tube are kept in a locked state or a folded state.

[0034] The utility model discloses a foldable carbon fiber bicycle frame which uses a folding structure to fold the carbon fiber bicycle frame, thereby reducing the space occupied by the carbon fiber bicycle frame, improving the utilization rate of the storage space of the carbon fiber bicycle and the convenience of carrying, and further improving the stability and safety of the foldable bicycle frame after it is opened, thereby effectively solving the problems existing in the prior art.

[0035] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] like Figure 1-Figure 5As shown, a carbon fiber bicycle folding frame includes a frame body 1, a frame head tube 2, a front fork 4, a rear fork 5 and a folding structure; the front end of the frame body 1 is hingedly connected to one end of the folding structure, and the rear end of the frame body 1 is fixedly connected to one end of the rear fork 5; the other end of the folding structure is hingedly connected to the rear end of the frame head tube 2, and the front end of the frame head tube 2 is rotatably connected to one end of the front fork 2; the front end of the frame body 1 and the rear end of the frame head tube 2 are respectively provided with an integrally formed groove, and the groove is matched with the folding structure; by locking or loosening the folding structure, the frame body 1 and the frame head tube 2 are kept in a locked state or a folded state.

[0037] The frame body 1 also includes a connecting rod 6 and a sleeve 3; the connecting rod 6 is arranged at the rear end of the frame body 1 in the vertical direction and is adjusted to connect to the seat; the sleeve 3 is perpendicular to the frame body 1 in the horizontal direction and is arranged at the lower part of the frame body 1, and is rotatably connected to the pedal main shaft.

[0038] The frame head tube 2 also includes a front fork sleeve 2.1, which is arranged vertically at the front end of the frame head tube 2 and is rotatably connected to one end of the front fork 4; the front fork 4 is an inverted V-shaped structure, and a front fork magnet 4.1 is provided at its lower end; the rear fork 5 is an inverted V-shaped structure, and a rear fork magnet 5.1 is provided at its lower end; the lower end of the connecting rod 6 is connected to the sleeve 3. Figure 6-Figure 9 As shown, the folding structure includes: a locking mechanism 7, a movable structure 8 and an anti-loosening structure 9; one end of the locking mechanism 7 is hingedly connected to the front end of the frame body 1, and the other end of the locking mechanism 7 is detachably connected to the rear end of the frame head tube 2; one end of the movable structure 8 is hingedly connected to the front end of the frame body 1, and the other end is hingedly connected to the rear end of the frame head tube 2; a part of the anti-loosening structure 9 is fixedly arranged at the rear end of the frame head tube 2, and the other part of the anti-loosening structure 9 is fixedly arranged at the other end of the locking mechanism 7, and the two parts of the anti-loosening structure 9 can be locked with each other.

[0039] The movable structure 8 includes a first shaft 8.1, a second shaft 8.2 and a connecting structure 8.3; the first shaft 8.1 and the second shaft 8.2 are arranged parallel to each other; the connecting structure 8.3 is in an I-shape as a whole; the first shaft 8.1 is rotatably inserted into one end of the connecting structure 8.3, and its two ends are hinged to the rear end of the frame head tube 2; the second shaft 8.2 is rotatably inserted into the other end of the connecting structure 8.3, and its two ends are hinged to the front end of the frame body 1.

[0040] The locking mechanism 7 includes a third shaft 7.1, a fourth shaft 7.2, a lock handle 7.3 and a connecting plate 7.4; the lock handle 7.3 is in an F shape; the third shaft 7.1 is in a shape like the Chinese character 'Bu', and it is detachably connected to a short side of the lock handle 7.3 and penetrates through the rear end of the frame head tube 2; the fourth shaft 7.2 penetrates through the other short side of the lock handle 7.3 and is hinged to the front end of the frame body 1; the connecting plate 7.4 is respectively connected to one end of the first shaft 8.1 and the third shaft 7.1, and one end of the second shaft 8.2 and the fourth shaft 7.2.

[0041] The anti-loosening structure 9 includes a燕尾槽9.1, a燕尾滑块9.2 and an elastic unit. The燕尾槽9.1 is fixedly connected to the long side of the lock handle 7.3; the elastic unit is fixedly connected to the rear end of the frame head tube 2; the燕尾滑块9.2 is detachably slidably connected to the燕尾槽9.1 under the drive of the elastic unit.

[0042] When folding the carbon fiber bicycle frame, press down the燕尾滑块9.2 to overcome the upward elastic force of the elastic unit, so that the燕尾槽滑块9.2 disengages from the燕尾槽9.1. At the same time, pull the long side of the lock handle 7.3, so that the lock handle 7.3 flips away from the frame head tube 2 along the fourth shaft 7.2, and the short side of the third shaft 7.1 disengages from the connection with the long side of the lock handle 7.3. Finally, the lock handle 7.3 is connected to the frame head tube 2. Flip the frame head tube 2 and the frame body 1, so that the frame head tube 2 rotates along the first shaft 8.1 and the frame body 1 rotates along the second shaft 8.2, and finally complete the folding of the carbon fiber frame.

[0043] In the description of the present invention, it should be understood that the terms 'first' and'second' are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with 'first' and'second' may explicitly or implicitly include one or more of such features. In the description of the present invention,'multiple' means two or more unless otherwise specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms such as 'installation', 'connection', 'connection', 'fixation' and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In the present invention, 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 that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely 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 obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] In the description of the present invention, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A folding carbon fiber bicycle frame, characterized by: The bicycle comprises a frame body (1), a frame head tube (2), a front fork (4), a rear fork (5) and a folding structure; the front end of the frame body (1) is hingedly connected to one end of the folding structure, the rear end of the frame body (1) is fixedly connected to one end of the rear fork (5), the other end of the folding structure is hingedly connected to the rear end of the frame head tube (2), and the front end of the frame head tube (2) is rotatably connected to one end of the front fork (4); the front end of the frame body (1) and the rear end of the frame head tube (2) are respectively provided with an integrally formed groove, and the groove is matched with the folding structure; by locking or loosening the folding structure, the frame body (1) and the frame head tube (2) are kept in a locked state or a folded state.

2. A folding carbon fiber bicycle frame according to claim 1, characterized in that: The folding structure comprises: a locking mechanism (7), a hinge structure (8) and an anti-loosening structure (9); one end of the locking mechanism (7) is hingedly connected to the front end of the frame body (1), and the other end of the locking mechanism (7) is detachably connected to the rear end of the frame head tube (2); one end of the hinge structure (8) is hingedly connected to the front end of the frame body (1), and the other end is hingedly connected to the rear end of the frame head tube (2); a part of the anti-loosening structure (9) is fixedly arranged at the rear end of the frame head tube (2), and the other part of the anti-loosening structure (9) is fixedly arranged at the other end of the locking mechanism (7), and the two parts of the anti-loosening structure (9) can be locked with each other.

3. The foldable carbon fiber bicycle frame according to claim 2, characterized in that: The movable-leaf structure (8) comprises a first shaft (8.1), a second shaft (8.2) and a connecting structure (8.3); the first shaft (8.1) and the second shaft (8.2) are arranged parallel to each other; the connecting structure (8.3) is in an I-shape as a whole; the first shaft (8.1) is rotatably inserted through one end of the connecting structure (8.3), and its two ends are hinged to the rear end of the frame head tube (2); the second shaft (8.2) is rotatably inserted through the other end of the connecting structure (8.3), and its two ends are hinged to the front end of the frame body (1).

4. The foldable carbon fiber bicycle frame according to claim 3, characterized in that: The locking mechanism (7) comprises a third shaft (7.1), a fourth shaft (7.2), a locking handle (7.3) and a connecting plate (7.4); the locking handle (7.3) is F-shaped; the third shaft (7.1) is detachably connected to one short side of the locking handle (7.3) and is passed through the rear end of the frame head tube (2); the fourth shaft (7.2) is passed through the other short side of the locking handle (7.3) and is hinged to the front end of the frame body (1); the connecting plate (7.4) is respectively connected to one end of the first shaft (8.1) and the third shaft (7.1), and one end of the second shaft (8.2) and the fourth shaft (7.2).

5. The foldable carbon fiber bicycle frame according to claim 4, characterized in that: The anti-loosening structure (9) comprises a dovetail groove (9.1), a dovetail slider (9.2) and an elastic unit, wherein the dovetail groove (9.1) is fixedly connected to the long side of the lock handle (7.3); the elastic unit is fixedly connected to the rear end of the frame head tube (2); and the dovetail slider (9.2) is detachably slidably connected to the dovetail groove (9.1) under the drive of the elastic unit.

6. The foldable carbon fiber bicycle frame according to claim 1, characterized in that: The frame body (1) further comprises a connecting rod (6) and a sleeve (3); the connecting rod (6) is arranged at the rear end of the frame body (1) in a vertical direction and is adjusted to connect to the seat; the sleeve (3) is perpendicular to the frame body (1) in a horizontal direction and is arranged at the lower part of the frame body (1) and is rotatably connected to the pedal main shaft.

7. The foldable carbon fiber bicycle frame according to claim 2, characterized in that: The frame head tube (2) further comprises a front fork sleeve (2.1), which is arranged at the front end of the frame head tube (2) in a vertical direction and is rotatably connected to one end of the front fork (4).

8. The foldable carbon fiber bicycle frame according to claim 3, characterized in that: The front fork (4) is in an inverted V-shaped structure, and a front fork magnet (4.1) is provided at its lower end.

9. The foldable carbon fiber bicycle frame according to claim 4, characterized in that: The rear fork (5) is in an inverted V-shaped structure, and a rear fork magnet (5.1) is provided at its lower end.

10. The foldable carbon fiber bicycle frame according to claim 6, characterized in that: The lower end of the connecting rod (6) is connected to the sleeve (3).

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