High-precision bidirectional ratchet structure and bicycle booster

Abstract

The utility model discloses a high accuracy bidirectional ratchet wheel structure and bicycle booster belongs to bicycle booster technical field, including connecting plate, connecting seat, staggered ratchet wheel subassembly and direction adjusting component, connecting plate sets up in pairs, is provided with the pin shaft on the outside wall of connecting plate respectively, and the connecting seat is rotatably connected on the outside wall of connecting plate through the pin shaft, and the staggered ratchet wheel subassembly is set up between connecting plate and connecting seat, and the direction adjusting component is rotatably connected in the inside of connecting seat, and the direction adjusting component is used for adjusting the locking direction of staggered ratchet wheel subassembly. The utility model solves the core problem of precision and strength contradiction in the prior art and the problem that fixed installation can influence the riding experience through the structural innovation, has remarkable technical advantage and practical value.

Description

Technical Field

[0001] This utility model relates to the field of bicycle booster technology, specifically to a high-precision bidirectional ratchet structure and a bicycle booster. Background Technology

[0002] A bicycle booster is a device used to assist riding. It is usually installed under the bicycle seat or near the rear wheel. It uses a motor or mechanical transmission mechanism to drive a friction wheel into contact with the bicycle tire, thereby providing additional power. Its core principle is to use friction to transfer the booster's power to the wheel, reducing the rider's burden and improving riding efficiency.

[0003] Existing bicycle power-ups typically use a fixed mounting method, employing a ratchet mechanism to maintain constant contact between the friction wheel and the tire. During use, the power-up's friction wheel needs to maintain just the right contact pressure with the bicycle tire to ensure sufficient friction to drive the wheel's rotation. Insufficient pressure causes the friction wheel to slip, reducing power transmission efficiency; excessive pressure generates additional resistance, resulting in power loss. Currently, adjusting this pressure primarily relies on a ratchet mechanism.

[0004] However, existing bicycle boosters have some problems. On the one hand, the ratchet structure of existing bicycle boosters achieves high-precision adjustment by reducing the ratchet pitch angle to increase the number of ratchet teeth. However, this significantly weakens the structural strength of the ratchet teeth, which can easily lead to problems such as tooth breakage and deformation after long-term use. Ultimately, this results in the failure of pressure regulation and the inability to maintain the optimal contact state between the booster and the wheel. On the other hand, since the booster is fixedly installed and always in contact with the tire, the friction wheel will generate additional resistance when the user is riding without assistance or when the booster battery is depleted, increasing the riding burden. In this case, the booster can only be removed to resume normal riding.

[0005] Therefore, how to provide a high-precision bidirectional ratchet structure and bicycle booster to overcome the shortcomings of the existing technology is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] To address these issues, this invention provides a high-precision bidirectional ratchet structure and a bicycle booster, which solves the problems in the prior art where traditional bicycle boosters achieve high-precision adjustment by reducing the ratchet pitch angle and increasing the number of ratches, and use a fixed installation method to keep the friction wheel in constant contact with the tire. This results in reduced ratchet structural strength, easy failure of pressure regulation, inability to maintain the optimal contact state between the booster and the wheel, and the generation of additional resistance when manually riding or when the booster is powered off, thus affecting the normal riding experience.

[0007] To achieve the above objectives, this utility model provides the following technical solution: According to a first aspect of the present invention, a high-precision bidirectional ratchet structure is provided, comprising: Connecting plates are arranged in pairs, and pins are respectively provided on the outer side walls of the connecting plates; The connecting seat is rotatably connected to the outer wall of the connecting plate via a pin. A staggered ratchet assembly is disposed between the connecting plate and the connecting seat; A direction adjustment component is rotatably connected inside the connecting seat, and the direction adjustment component is used to adjust the locking direction of the misaligned ratchet assembly.

[0008] Furthermore, the misaligned ratchet assembly includes: A plurality of ratchet wheels are rotatably connected between the two connecting plates, and the plurality of ratchet wheels are fixedly connected and staggered. A plurality of pawls are configured in two groups, the two groups of pawls being symmetrically arranged inside the connecting seat and rotatably connected to the connecting seat, the pawls being able to abut against the ratchet; Several elastic elements are disposed inside the connecting seat, and the elastic elements are used to drive the pawl to abut against the ratchet.

[0009] Furthermore, the pitch angle of the ratchet teeth is α degrees; the number of ratchet wheels is N; the misalignment angle between several ratchet wheels is β degrees; where 4≤α≤30°, 2≤N≤30°. .

[0010] Furthermore, the direction adjustment component includes: A rotating shaft is rotatably connected inside the connecting seat, with both ends of the rotating shaft extending out of the connecting seat; A lever is provided on the circumferential sidewall of the rotating shaft located inside the connecting seat; Knobs, arranged in pairs, are installed at both ends of the rotating shaft.

[0011] Furthermore, the connecting seat is provided with a limiting plate inside to restrict the position of the toggle block.

[0012] Furthermore, the elastic element is a torsion spring.

[0013] Furthermore, the top of the connector has a connecting portion, and the top of the connecting portion has several countersunk holes.

[0014] Furthermore, the end of the pawl that contacts the ratchet wheel has stepped multi-stage contact teeth.

[0015] According to a second aspect of the present invention, a bicycle booster is provided, including the aforementioned high-precision bidirectional ratchet structure, and further including a clamp body and a booster body. The clamp body is welded to the end of the connecting plate, and the connecting seat is installed inside the booster body. The clamp body is rotatably connected to the booster body through the connecting plate.

[0016] This utility model has the following advantages: The high-precision bidirectional ratchet structure disclosed in this utility model significantly improves the adjustment accuracy of the ratchet structure by setting up a misaligned ratchet assembly and a direction adjustment assembly. Compared with the traditional single ratchet or small-aperture ratchet structure, the misaligned ratchet assembly of this utility model adopts multiple ratchets working together, which not only ensures high adjustment accuracy but also disperses the force on individual ratchet teeth, effectively improving the strength and durability of the overall structure and avoiding adjustment failure caused by tooth breakage or deformation.

[0017] By setting up a direction adjustment component, the ratchet locking direction can be flexibly switched. When the user wants to ride independently or when the booster is out of power, the booster will contact the tire, preventing it from affecting the normal riding experience, improving riding comfort, and enhancing the applicability of the booster.

[0018] By setting multi-stage contact teeth at the end where the pawl contacts the ratchet, the contact area between the pawl and the ratchet is greatly increased, enhancing the structural strength of the pawl and reducing material costs.

[0019] The bicycle booster disclosed in this utility model significantly improves the adjustment precision of the ratchet structure by setting a staggered ratchet assembly. This allows for more precise control of the contact pressure between the booster's friction wheel and the bicycle tire, ensuring optimal friction, preventing slippage, reducing additional resistance, and thus improving power transmission efficiency. The ratchet locking direction can be flexibly switched via a direction adjustment assembly, enabling the booster to provide stable pressure adjustment and adapt to different installation needs or riding scenarios, thereby improving its applicability. Attached Figure Description

[0020] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] Figure 1 A three-dimensional view of a high-precision bidirectional ratchet structure provided for this utility model; Figure 2 A perspective view of the direction adjustment component provided by this utility model; Figure 3 A high-precision bidirectional ratchet structure sectional view provided for this utility model; Figure 4 A cross-sectional view of the high-precision bidirectional ratchet structure provided for this utility model; Figure 5 A perspective view of the ratchet provided for this utility model; Figure 6 Provided by this utility model Figure 5 Enlarged view of the A-structure; Figure 7 A perspective view of the bicycle booster provided by this utility model; Figure 8 A cross-sectional view of the bicycle booster provided by this utility model; Figure 9 Provided by this utility model Figure 4 Enlarged view of the B-structure.

[0023] In the figure: 1 connecting plate; 11 pin; 2 connecting seat; 21 connecting part; 22 countersunk hole; 3 misaligned ratchet assembly; 31 ratchet; 32 pawl; 321 multi-stage contact teeth; 4 direction adjustment assembly; 41 rotating shaft; 42 toggle block; 43 knob; 44 limit plate; 5 pipe clamp body; 6 booster body. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please refer to Figures 1-9 The high-precision bidirectional ratchet structure disclosed in this utility model will now be described, such as... Figure 1 , Figure 2 As shown, the assembly includes a connecting plate 1, a connecting seat 2, a misaligned ratchet assembly 3, and a direction adjustment assembly 4. The connecting plates 1 are arranged in pairs, and pins 11 are respectively provided on the outer side walls of the connecting plates 1. The connecting seat 2 is rotatably connected to the outer side walls of the connecting plates 1 through the pins 11. The misaligned ratchet assembly 3 is arranged between the connecting plates 1 and the connecting seat 2. The direction adjustment assembly 4 is rotatably connected inside the connecting seat 2 and is used to adjust the locking direction of the misaligned ratchet assembly 3.

[0026] In this embodiment, the shapes of the connecting plate 1 and the connecting seat 2 are as follows: Figure 1 , Figure 2 As shown, the direction adjustment component 4 is used to adjust the locking direction of the misaligned ratchet assembly 3. By setting the misaligned ratchet assembly 3, the adjustment accuracy is greatly improved. Compared with the traditional single ratchet or small-aperture ratchet structure, the misaligned ratchet assembly 3 of this utility model adopts multiple ratchets working together. While ensuring high adjustment accuracy, it disperses the force on individual ratchet teeth, effectively improving the strength and durability of the overall structure and avoiding adjustment failure caused by tooth breakage or deformation. Through the direction adjustment component 4, the locking direction of the ratchet 31 can be flexibly switched to adapt to different usage scenarios.

[0027] like Figure 3 , Figure 4 As shown, the misaligned ratchet assembly 3 includes ratchet 31, pawl 32 and elastic elements. Several ratchet 31 are rotatably connected between two connecting plates 1. Several ratchet 31 are fixedly connected and misaligned. Several pawl 32 are set in two groups. The two groups of pawl 32 are symmetrically arranged inside the connecting seat 2 and rotatably connected to the connecting seat 2. The pawl 32 can abut against the ratchet 31. Several elastic elements are arranged inside the connecting seat 2. The elastic elements are used to drive the pawl 32 to abut against the ratchet 31.

[0028] In this embodiment, the ratchet 31 and pawl 32 are configured as follows: Figure 3 , Figure 4 As shown, several ratchet wheels 31 rotate around the same axis. After the ratchet wheels 31 are misaligned, they are fixedly connected by pins so that the rotation of all ratchet wheels 31 is simultaneous, in order to maintain the misalignment angle between the ratchet wheels 31.

[0029] The pawl 32 is a common component in the ratchet 31 structure in the prior art. The shape of the end of the pawl 32 matches the ratchet teeth on the ratchet 31. Under the action of the elastic element, the pawl 32 can maintain its abutment with the ratchet 31, achieving unidirectional locking. In this utility model, the elastic element is disposed inside the connecting seat 2, and therefore is not shown in the figure. One end of the elastic element is connected to the pawl 32, and the other end is connected to the shaft at the center of the pawl 32. Since the cooperation between the pawl 32 and the elastic element is a common method used by those skilled in the art, the selection of the elastic element can be adjusted according to the situation of those skilled in the art, as long as the elastic element can drive the pawl 32 to abut against the ratchet 31. Preferably, the elastic element is a torsion spring.

[0030] Preferably, the end of the pawl 32 that contacts the ratchet 31 has stepped multi-stage contact teeth 321. The specific shape of the multi-stage contact teeth 321 is as follows: Figure 9 As shown, the multi-stage contact teeth 321 in this embodiment have a three-stage stepped structure. The multi-stage contact teeth 321 simultaneously mesh with three ratchet teeth on the ratchet 31. This design enhances the structural strength of the pawl 32. The size of the end of the pawl 32 that contacts the ratchet 31 needs to match the size of the ratchet teeth on the ratchet 31. When the ratchet teeth on the ratchet 31 are small, the end of the pawl 32 will bear a large force, which places higher demands on the material strength of the pawl 32. Simply increasing the material strength of the pawl 32 would significantly increase the cost. By providing multi-stage contact teeth 321 at the end of the pawl 32 that contacts the ratchet 31, the contact area between the pawl 32 and the ratchet 31 is greatly increased, enhancing the structural strength of the pawl 32 and reducing material costs.

[0031] In this invention, several pawls 32 are configured in two sets, symmetrically arranged, to lock the ratchet 31 from opposite directions, thereby achieving a bidirectional adjustable locking direction. This means that during use, only one set of pawls 32 must be in operation, while the other set must be disengaged. The direction adjustment component 4 achieves this function by disengaging one set of pawls 32.

[0032] The most important inventive point of this utility model lies in the misaligned setting of the ratchet 31 and its cooperation with the pawl 32. In the prior art, to achieve high-precision adjustment of the ratchet structure, the ratchet pitch angle is often reduced and the number of ratchet teeth is increased. This results in insufficient strength of the ratchet teeth, making them prone to breakage or severe wear, leading to ratchet structure failure. In the prior art, the structural strength of the ratchet teeth is improved by changing the material of the ratchet. However, the improvement brought by material improvement has an upper limit and will significantly increase the cost, making it uneconomical. In contrast, this utility model, by setting the ratchet misaligned, achieves 360° high-precision adjustment. The pitch angle of the ratchet teeth can be made very large, which greatly improves the strength of the ratchet teeth. At this point, further improving the material strength of the ratchet 31 can further improve the overall strength of the ratchet structure, which has obvious advantages.

[0033] Preferably, the pitch angle of the ratchet teeth of the ratchet 31 is α degrees; the number of ratchet 31s is N; the misalignment angle between several ratchet 31s is β degrees; wherein, 4≤α≤30, 2≤N≤30, .

[0034] The offset angle β can be adjusted according to the pitch angle α of the ratchet teeth of ratchet 31 and the number N of ratchet 31. The pitch angle α determines the number of ratchet teeth on ratchet 31. To avoid insufficient ratchet teeth for effective operation, the pitch angle α is limited to 4≤α≤30°. The number of ratchet 31 affects the size of the booster, and the number of ratchet 31 is limited to 2≤N≤30°. It is worth noting that the number N of ratchet 31 can only be an integer.

[0035] The adjustment accuracy of this utility model is determined by the misalignment angle between the ratchet 31, the number of ratchet 31, and the pitch angle of the ratchet teeth. Therefore, it can be achieved as long as the corresponding quantitative relationship is met. This utility model is not limited to the setting method provided in the embodiments of this article.

[0036] The ratchet 31 of this utility model has multiple misalignment settings, and the following is the implementation method of this embodiment: like Figure 5 , Figure 6 As shown, the ratchet teeth of the ratchet 31 have a pitch angle of 4 degrees, and there are four ratchet 31s in total. The ratchet teeth of the four ratchet 31s are staggered by 1°, and there are eight pawls 32. This utility model uses four ratchet 31s with a pitch angle of 4° and a staggered arrangement of 1°, combined with eight sets of pawls 32. While maintaining a large pitch angle for each individual ratchet 31, the staggered arrangement achieves an equivalent 1° subdivision locking angle. This minimizes the number of ratchet 31s and reduces the size of this utility model while ensuring the strength of the ratchet 31.

[0037] like Figure 2 , Figure 3 , Figure 4 As shown, the direction adjustment component 4 includes a rotating shaft 41, a lever 42, and a knob 43. The rotating shaft 41 is rotatably connected inside the connecting seat 2, and both ends of the rotating shaft 41 extend out of the connecting seat 2. The lever 42 is set on the circumferential side wall of the rotating shaft 41 inside the connecting seat 2. The knobs 43 are arranged in pairs and installed at both ends of the rotating shaft 41.

[0038] In this embodiment, the direction adjustment component 4 has two functions: first, to disconnect a set of pawls 32 from the ratchet 31; second, to disengage the locked pawls 32 when adjustment is needed. The shape of the lever 42 is as follows: Figure 4 As shown, the lever 42 can simultaneously actuate a set of pawls 32 to switch the locking direction of the misaligned ratchet assembly 3. The rotating shaft 41 should have a certain damping and be able to maintain a stable position.

[0039] like Figure 3 , Figure 4 As shown, the connecting seat 2 is provided with a limiting plate 44 for limiting the position of the toggle block 42. The limiting plate 44 can limit the toggle block 42 to prevent it from rotating excessively.

[0040] like Figure 1 As shown, a connecting portion 21 is formed on the top of the connector 2, and several countersunk holes 22 are provided on the top of the connecting portion 21. By providing the connecting portion 21 and the countersunk holes 22, the connection effect of the connector 2 is made more stable.

[0041] Based on the same inventive concept, this utility model also discloses a bicycle booster, such as... Figure 7 , Figure 8 As shown, the high-precision bidirectional ratchet structure includes a pipe clamp body 5 and an assist body 6. The pipe clamp body 5 is welded to the end of the connecting plate 1, and the connecting seat 2 is installed inside the assist body 6. The pipe clamp body 5 is rotatably connected to the assist body 6 through the connecting plate 1.

[0042] In this embodiment, the installation method of the booster body 6 and the connecting seat 2 is as follows: Figure 8 As shown, the top of the connector 2 is provided with a connecting part 21 and a countersunk hole 22, which facilitates quick assembly with the bicycle booster body 6. At the same time, the welding structure between the pipe clamp body 5 and the connecting plate 1 enhances the overall rigidity, making the booster installation more stable and reducing the risk of loosening after long-term use.

[0043] By setting the misaligned ratchet assembly 3, the adjustment precision of the ratchet structure is greatly improved, which can more accurately control the contact pressure between the booster friction wheel and the bicycle tire, ensuring that the friction is in the best state, avoiding slippage and reducing additional resistance, thereby improving the power transmission efficiency.

[0044] The ratchet 31 locking direction can be flexibly switched by the direction adjustment component 4, so that the booster can provide stable pressure adjustment and adapt to different installation requirements or riding scenarios, thus improving its applicability.

[0045] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A high-precision bidirectional ratchet structure, characterized in that, include: Connecting plates (1) are arranged in pairs, and pins (11) are respectively provided on the outer side walls of the connecting plates (1). The connecting seat (2) is rotatably connected to the outer wall of the connecting plate (1) via a pin (11); The misaligned ratchet assembly (3) is disposed between the connecting plate (1) and the connecting seat (2); The direction adjustment component (4) is rotatably connected inside the connecting seat (2), and the direction adjustment component (4) is used to adjust the locking direction of the misaligned ratchet assembly (3).

2. The high-precision bidirectional ratchet structure as described in claim 1, characterized in that, The misaligned ratchet assembly (3) includes: A plurality of ratchet wheels (31) are rotatably connected between the two connecting plates (1), and the plurality of ratchet wheels (31) are fixedly connected and staggered. A number of pawls (32) are configured in two groups. The two groups of pawls (32) are symmetrically arranged inside the connecting seat (2) and rotatably connected to the connecting seat (2). The pawls (32) can abut against the ratchet (31). Several elastic elements are disposed inside the connecting seat (2), and the elastic elements are used to drive the pawl (32) to abut against the ratchet (31).

3. The high-precision bidirectional ratchet structure as described in claim 2, characterized in that, The pitch angle of the ratchet teeth of the ratchet (31) is α degrees; the number of ratchet (31) is N; the misalignment angle between several ratchet (31) is β degrees; where 4≤α≤30, 2≤N≤30, .

4. The high-precision bidirectional ratchet structure as described in claim 2, characterized in that, The direction adjustment component (4) includes: A rotating shaft (41) is rotatably connected inside the connecting seat (2), with both ends of the rotating shaft (41) extending out of the connecting seat (2). A lever (42) is disposed on the circumferential side wall inside the connecting seat (2) of the rotating shaft (41); Knobs (43) are arranged in pairs and installed at both ends of the rotating shaft (41).

5. The high-precision bidirectional ratchet structure as described in claim 4, characterized in that, The connecting seat (2) is provided with a limiting plate (44) for limiting the position of the toggle block (42).

6. The high-precision bidirectional ratchet structure as described in claim 2, characterized in that, The elastic element is a torsion spring.

7. The high-precision bidirectional ratchet structure as described in claim 1, characterized in that, The top of the connector (2) has a connecting part (21), and the top of the connecting part (21) has several countersunk holes (22).

8. The high-precision bidirectional ratchet structure as described in claim 2, characterized in that, The end of the pawl (32) that contacts the ratchet (31) has stepped multi-stage contact teeth (321).

9. A bicycle booster, characterized in that, The high-precision bidirectional ratchet structure according to any one of claims 1-8 further includes a pipe clamp body (5) and an assist body (6), the pipe clamp body (5) is welded to the end of the connecting plate (1), the connecting seat (2) is installed inside the assist body (6), and the pipe clamp body (5) is rotatably connected to the assist body (6) through the connecting plate (1).

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