Foldable mechanism of bicycle
Through the design of the bicycle foldable mechanism, the transportation and storage inconvenience caused by the large bicycle size is solved, and convenient folding and safe limit protection is achieved.
Patent Information
- Application Number
- CN202421816908.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing bicycles are large in size and cannot meet the transportation and storage needs in some scenarios. They cannot be effectively utilized if they are inconvenient to carry and the storage space is limited.
A bicycle foldable mechanism is designed, and through the structure of the first folding column and the second folding column, combined with the arrangement of the limiting groove, the limiting cylinder, the square limit block and the square limit hole, the convenient folding of the bicycle is realized, and the two limit protection is provided in the unfolded state.
It realizes the convenient folding of the bicycle, meets special carrying and storage needs, and effectively prevents safety accidents caused by accidental contact during riding.
Smart Images
Figure CN223132251U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bicycles, in particular to a foldable mechanism for bicycles. Background Art
[0002] A bicycle refers to a two-wheeled vehicle driven by human power, which drives the chain or directly drives the wheels through pedaling to achieve forward movement. From a functional perspective, a bicycle is a convenient, environmentally friendly and healthy means of transportation. It is suitable for short-distance travel, fitness and leisure. From the perspective of its development process, bicycles have evolved from the early heavy and simple structures to the current lightweight, diversified and high-performance ones. In modern society, the concept of bicycles is also constantly expanding and innovating. For example, electric bicycles combine electric auxiliary drive to make cycling easier; the emergence of shared bicycles has changed people's travel modes and urban traffic patterns; there are also some special-purpose bicycles, such as mountain bikes and road bikes, which meet the needs of different scenarios and users.
[0003] Existing bicycles are large in volume and cannot meet the transportation and storage requirements in some scenarios. It is very inconvenient when it is necessary to carry a bicycle for travel, and when the storage space is small, the storage requirements cannot be well met.
[0004] Therefore, we propose a foldable mechanism for bicycles. Content of the Utility Model
[0005] The purpose of the utility model is to solve the disadvantages existing in the prior art. Currently, bicycles are large in volume and cannot meet the transportation and storage requirements in some scenarios. It is very inconvenient when it is necessary to carry a bicycle for travel, and when the storage space is small, the storage requirements cannot be well met.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A foldable mechanism for a bicycle includes a first folding column. A rotating shaft is rotatably sleeved on the inner wall of the first folding column. A limiting groove is formed on the outer surface of the rotating shaft. A round hole is formed on the back of the first folding column. One end of the round hole communicates with one end of the limiting groove. A limiting cylinder is movably sleeved on the inner wall of the round hole. One end of the outer surface of the limiting cylinder is movably inserted into the inner wall of the limiting groove. A connecting plate is fixedly connected to the back of the limiting cylinder. Symmetrically distributed connecting rods are fixedly connected to the front of the connecting plate. One ends of the two connecting rods penetrate and extend to the front of the first folding column;
[0008] Pressing plates are fixedly connected to the fronts of the two first connecting columns. Symmetrically distributed first springs are fixedly connected to the backs of the pressing plates.
[0009] Preferably, one end of each of the two first springs is fixedly connected to the front side of the first folding column, and a protective shell is fixedly connected to the front side of the first folding column.
[0010] Preferably, the inner wall of the protective shell is movably connected to the outer surface of the pressing plate, a long strip is fixedly connected to the front of the first folding column, a square limiting hole is opened on the front of the long strip, and symmetrically distributed rotating blocks are fixedly connected to the two end surfaces of the rotating shaft.
[0011] Preferably, the opposite surfaces of the two rotating blocks are fixedly connected with a second folding column, the front side of the second folding column is provided with a square mounting hole, the upper surface of the second folding column is provided with an L-shaped groove, and one end of the L-shaped groove passes through and extends to the inner top wall of the square mounting hole.
[0012] Preferably, a second spring is fixedly connected to the rear inner wall of the square mounting hole, one end of the second spring is fixedly connected to a square limiting block, and the outer surface of the square limiting block is slidably sleeved with the inner wall of the square mounting hole.
[0013] Preferably, a moving groove is provided on the front side of the square limit block, a sliding block is slidably sleeved on the inner wall of the square limit block, and a toggle rod is fixedly connected to the upper surface of the sliding block.
[0014] Preferably, one end of the toggle rod passes through the movable groove and the L-shaped groove and extends to the upper surface of the second folding column, the outer surface of the square limit block is movably connected to the inner wall of the square limit hole, and one end of the square limit block is provided with a slope.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] In the utility model, by setting the first folding column and the second folding column, the bicycle can be easily folded, thereby meeting some special carrying and storage requirements, and the setting of the square limit block, the square limit hole, the limit cylinder and the limit groove makes the unfolded state of the first folding column and the second folding column have a double limit protection structure, which effectively prevents the occurrence of safety accidents caused by accidental touch during riding. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the main structure of a foldable mechanism of a bicycle provided by the utility model;
[0018] Figure 2 A cross-sectional view of a first folding column of a foldable mechanism of a bicycle provided by the utility model;
[0019] Figure 3Cross-sectional view of the second folding column of a foldable mechanism for a bicycle provided by the present utility model;
[0020] Figure 4 Cross-sectional view of the square limit block of a foldable mechanism for a bicycle provided by the present utility model.
[0021] Legend: 1. First folding column; 2. Rotating shaft; 3. Limit groove; 4. Round hole; 5. Limit cylinder; 6. Connecting plate; 7. Connecting rod; 8. Pressing plate; 9. First spring; 10. Protection housing; 11. Long strip; 12. Square limit hole; 13. Rotating block; 14. Second folding column; 15. Square mounting hole; 16. L-shaped groove; 17. Second spring; 18. Square limit block; 19. Moving groove; 20. Sliding block; 21. Poking rod; 22. Inclined plane. Detailed implementation manners
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.
[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0026] Embodiment 1
[0027] AsFigures 1-4 As shown, the utility model provides a technical solution: a foldable mechanism of a bicycle, comprising a first folding column 1, the inner wall of the first folding column 1 is rotatably sleeved with a rotating shaft 2, the outer surface of the rotating shaft 2 is provided with a limiting groove 3, the back of the first folding column 1 is provided with a circular hole 4, one end of the circular hole 4 is connected with one end of the limiting groove 3, the inner wall of the circular hole 4 is movably sleeved with a limiting cylinder 5, the outer surface of one end of the limiting cylinder 5 is movably plugged with the inner wall of the limiting groove 3, the outer surface of one end of the limiting cylinder 5 is plugged with the inner wall of the limiting groove 3, the first level of limiting protection is performed on the unfolded state of the first folding column 1 and the second folding column 14, the back of the limiting cylinder 5 is fixedly connected with a connecting plate 6, the front of the connecting plate 6 is fixedly connected with connecting rods 7 which are symmetrically distributed, and one end of the two connecting rods 7 passes through and extends to the front of the first folding column 1;
[0028] The front sides of the two first connecting columns are fixedly connected with a pressing plate 8, and the back sides of the pressing plate 8 are fixedly connected with a symmetrically distributed first spring 9. The setting of the first spring 9 ensures that when the bicycle is riding, the outer surface of one end of the limiting cylinder 5 is always plugged into the inner wall of the limiting groove 3, thereby protecting and limiting the unfolded state of the first folding column 1 and the second folding column 14.
[0029] Example 2
[0030] like Figures 1-4 As shown, the utility model provides a technical solution: one end of the two first springs 9 is fixedly connected to the front of the first folding column 1, and the front of the first folding column 1 is fixedly connected with a protective shell 10, which protects the first springs 9 inside to prevent aging.
[0031] The inner wall of the protective shell 10 is movably connected to the outer surface of the pressing plate 8. When the bicycle needs to be folded, the pressing plate 8 is pressed, and the pressing plate 8 drives the connecting plate 6 to move through the connecting rod 7, thereby driving the limiting cylinder 5 to move, so that the outer surface of the limiting cylinder 5 is no longer plugged into the inner wall of the limiting groove 3, so that the first level of protection limit is no longer effective. The front side of the first folding column 1 is fixedly connected to a long block 11, and a square limiting hole 12 is opened on the front side of the long block 11. The two end surfaces of the rotating shaft 2 are fixedly connected to symmetrically distributed rotating blocks 13.
[0032] The opposite surfaces of the two rotating blocks 13 are fixedly connected with the second folding column 14, the front side of the second folding column 14 is provided with a square mounting hole 15, and the upper surface of the second folding column 14 is provided with an L-shaped groove 16. The other end of the L-shaped groove 16 can limit the toggle rod 21 when folding, and one end of the L-shaped groove 16 penetrates and extends to the inner top wall of the square mounting hole 15.
[0033] A second spring 17 is fixedly connected to the rear inner wall of the square mounting hole 15. The second spring 17 is arranged so that the square limit block 18 is always plugged into the square mounting hole 15 when the bicycle is in the unfolded state, and a second level of protection limit is performed on the unfolded state of the first folding column 1 and the second folding column 14. One end of the second spring 17 is fixedly connected to the square limit block 18, and the outer surface of the square limit block 18 is slidably sleeved with the inner wall of the square mounting hole 15.
[0034] A moving groove 19 is provided on the front of the square limit block 18, a sliding block 20 is slidably sleeved on the inner wall of the square limit block 18, and a toggle rod 21 is fixedly connected to the upper surface of the sliding block 20. When the bicycle needs to be folded, the limiting effect of the square limit block 18 is released by toggle rod 21.
[0035] One end of the toggle rod 21 passes through the movable groove 19 and the L-shaped groove 16 and extends to the upper surface of the second folding column 14. The outer surface of the square limit block 18 is movably connected with the inner wall of the square limit hole 12. An inclined surface 22 is provided at one end of the square limit block 18. The setting of the inclined surface 22 makes it easier for the square limit block 18 to be connected with the square limit hole 12 when the bicycle is transformed from a folded state to a non-folded state, thereby protecting and limiting the unfolded state of the first folding column 1 and the second folding column 14.
[0036] By setting the first folding column and the second folding column, the bicycle can be easily folded, thereby meeting some special carrying and storage requirements, and the setting of the square limit block, the square limit hole, the limit cylinder and the limit groove makes the unfolded state of the first folding column and the second folding column have a double limit protection structure, which effectively prevents the occurrence of safety accidents caused by accidental touch during riding.
[0037] The working process of the utility model is as follows: step 1, the first folding column 1 is fixedly connected to the rear half of the bicycle, and the second folding column 14 is fixedly connected to the front half of the bicycle. When the bicycle is in a normal state, the first folding column 1 and the second folding column 14 are in an unfolded state, and the outer surface of one end of the limiting cylinder 5 is plugged into the inner wall of the limiting groove 3, and the unfolded state of the first folding column 1 and the second folding column 14 is subjected to a first-level limiting protection, and the outer surface of the square limiting block 18 is plugged into the inner wall of the square limiting hole 12, and the unfolded state of the first folding column 1 and the second folding column 14 is subjected to a second-level limiting protection. The double limiting protection of the unfolded state of the first folding column 1 and the second folding column 14 can effectively prevent accidental touches, and reduce the occurrence of safety accidents caused by accidental touches during riding;
[0038] Step 2, when the bicycle needs to be folded, move the toggle lever 21 so that the toggle lever 21 moves from one end of the L-shaped groove 16 to the other end. The movement of the toggle lever 21 drives the square limit block 18 to move and limits it, so that the outer surface of the square limit block 18 is no longer inserted into the inner wall of the square limit hole 12, thereby making the second-layer protection limit ineffective. Then, press the pressing plate 8. The pressing plate 8 drives the connecting plate 6 to move through the connecting rod 7, thereby driving the limit cylinder 5 to move, so that the outer surface of the limit cylinder 5 is no longer inserted into the inner wall of the limit groove 3, thereby making the first-layer protection limit ineffective. At this time, the first folding column 1 and the second folding column 14 can be folded, thus folding the bicycle to meet the requirements of carrying or storage.
[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A foldable mechanism for a bicycle, comprising a first folding column (1), characterized in that: The inner wall of the first folding column (1) is rotatably sleeved with a rotating shaft (2), and a limiting groove (3) is provided on the outer surface of the rotating shaft (2). A circular hole (4) is provided on the back of the first folding column (1), and one end of the circular hole (4) is connected to one end of the limiting groove (3). A limiting cylinder (5) is movably sleeved on the inner wall of the circular hole (4), and the outer surface of one end of the limiting cylinder (5) is movably plugged into the inner wall of the limiting groove (3). A connecting plate (6) is fixedly connected to the back of the limiting cylinder (5), and symmetrically distributed connecting rods (7) are fixedly connected to the front of the connecting plate (6), and one end of the two connecting rods (7) passes through and extends to the front of the first folding column (1); The front sides of the two first connecting columns are both fixedly connected with a pressing plate (8), and the back sides of the pressing plates (8) are fixedly connected with symmetrically distributed first springs (9).
2. The foldable mechanism of a bicycle according to claim 1, wherein: One end of each of the two first springs (9) is fixedly connected to the front side of the first folding column (1), and a protective shell (10) is fixedly connected to the front side of the first folding column (1).
3. The foldable mechanism of a bicycle according to claim 2, characterized in that: The inner wall of the protective shell (10) is movably connected to the outer surface of the pressing plate (8); the front of the first folding column (1) is fixedly connected to a long block (11); the front of the long block (11) is provided with a square limiting hole (12); and the two end surfaces of the rotating shaft (2) are fixedly connected to rotating blocks (13) that are symmetrically distributed.
4. The foldable mechanism of a bicycle according to claim 3, characterized in that: The opposing surfaces of the two rotating blocks (13) are fixedly connected with a second folding column (14), a square mounting hole (15) is provided on the front of the second folding column (14), an L-shaped groove (16) is provided on the upper surface of the second folding column (14), and one end of the L-shaped groove (16) passes through and extends to the inner top wall of the square mounting hole (15).
5. The foldable mechanism of a bicycle according to claim 4, wherein: A second spring (17) is fixedly connected to the rear inner wall of the square mounting hole (15), one end of the second spring (17) is fixedly connected to a square limit block (18), and the outer surface of the square limit block (18) is slidably sleeved with the inner wall of the square mounting hole (15).
6. The foldable mechanism of a bicycle according to claim 5, characterized in that: A moving groove (19) is provided on the front of the square limit block (18); a sliding block (20) is slidably sleeved on the inner wall of the square limit block (18); and a toggle rod (21) is fixedly connected to the upper surface of the sliding block (20).
7. The foldable mechanism of a bicycle according to claim 6, characterized in that: One end of the toggle rod (21) passes through the movable groove (19) and the L-shaped groove (16) and extends to the upper surface of the second folding column (14); the outer surface of the square limit block (18) is movably plugged into the inner wall of the square limit hole (12); and one end of the square limit block (18) is provided with a slope (22).