A multi-specification integrated sprocket

Abstract

This utility model discloses a multi-specification integrated sprocket, including a hub assembly and a sprocket tooth assembly, with the sprocket tooth assembly detachably connected to the hub assembly. The hub assembly includes a wheel body with mounting holes, and a retaining ring integrally formed on the outer surface of the wheel body to fit the sprocket tooth assembly. The sprocket tooth assembly includes at least two arc-shaped rings symmetrically arranged on one side of the retaining rings. The inner circumferential wall of the arc-shaped rings fits tightly against the wheel body, and the outer circumferential wall of the arc-shaped rings is integrally formed with teeth. By adopting a separate design for the hub assembly and the sprocket tooth assembly, and with the sprocket tooth assembly consisting of detachable arc-shaped rings, when some teeth wear, it is not necessary to replace the entire sprocket; only the worn arc-shaped rings need to be disassembled and replaced, effectively reducing the waste of unworn parts. The hub assembly is provided with multiple types of mounting holes, which can be adapted to the output shafts of different models of two-wheeled motor vehicles, breaking through the limitation of existing sprockets that can only adapt to a few specifications of output shafts.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle transmission sprocket technology, and in particular to a multi-specification integrated sprocket. Background Technology

[0002] Motorcycles are a widely used mode of transportation, encompassing various types such as street bikes, road racing bikes, off-road motorcycles, and regular motorcycles. The sprocket is the core component of the motorcycle's transmission system, which transmits power by meshing with the chain. It is also widely used in fields such as chemical, textile machinery, and agricultural machinery.

[0003] In the prior art, patent document CN216112039U discloses a multifunctional practical sprocket, including a sprocket body, a shaft hole in the middle of the sprocket body, a spline in the shaft hole, the number of splines being 4 and evenly distributed along the circumference of the shaft hole, sprocket teeth in the middle of the outer peripheral wall of the sprocket body, and a weight reduction hole and a mounting hole between the shaft hole and the sprocket teeth.

[0004] However, while the sprocket's one-piece molding structure improves its compatibility with the output shaft to some extent by using two sets of mounting holes of different sizes, in practical applications, the sprocket is constantly engaged with the chain, and the teeth are prone to localized wear due to friction. The one-piece molding structure means that even if only some teeth wear, the entire sprocket must be disassembled and replaced. This not only wastes resources of unworn parts but also significantly increases the user's maintenance costs. In addition, the entire replacement process requires disassembling the entire transmission-related components, which is cumbersome and time-consuming, seriously affecting the efficiency of the equipment and failing to meet the user's demand for low-cost maintenance and high-efficiency operation.

[0005] To address this, a multi-specification integrated sprocket is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a multi-specification integrated sprocket to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A multi-specification integrated sprocket includes a hub assembly and a sprocket tooth assembly, wherein the sprocket tooth assembly is detachably connected to the hub assembly, wherein:

[0009] The hub assembly includes a wheel body, the wheel body is provided with mounting holes, and a retaining ring adapted to the chain tooth assembly is integrally formed on the outer surface of the wheel body;

[0010] The chain tooth assembly includes at least two arc-shaped rings symmetrically arranged on one side of the retaining ring. The inner peripheral wall of the arc-shaped ring is tightly fitted with the wheel body, and the outer peripheral wall of the arc-shaped ring is integrally formed with wheel teeth. The arc-shaped ring and the retaining ring are connected and fixed by bolts and nuts. Both the arc-shaped ring and the retaining ring are provided with through holes for bolts to pass through.

[0011] As a preferred technical solution, the assembly hole includes a central hole at the center of the wheel body, and the inner cavity of the central hole has four spline holes that are equidistantly distributed in an annular pattern, the inner diameter of the spline holes being larger than the inner diameter of the central hole.

[0012] As a preferred technical solution, the assembly hole further includes a connecting hole formed on the surface of the wheel body, the connecting hole being located near the center hole, wherein:

[0013] The connection hole includes a first mounting hole and a second mounting hole. There are four first mounting holes and four second mounting holes that are equidistantly distributed in a ring, and the first mounting holes and the second mounting holes are spaced apart.

[0014] As a preferred technical solution, the first mounting hole is a rectangular elongated hole with two short sides having semi-circular chamfers.

[0015] As a preferred technical solution, the second mounting hole is composed of a first through hole and a second through hole, the inner cavities of the first through hole and the second through hole are interconnected, and both the first through hole and the second through hole are circular holes.

[0016] As a preferred technical solution, the inner diameter of the first through hole is equal to the inner diameter of the semi-circular chamfer of the first mounting hole, and the inner diameter of the second through hole is greater than the inner diameter of the first through hole.

[0017] As a preferred technical solution, the center of one half of the circular chamfer of the first through hole and the first mounting hole is on the same circle, and the center of the other half of the circular chamfer of the second through hole and the first mounting hole is on the same circle.

[0018] As a preferred technical solution, the retaining ring has at least two limiting posts integrally formed on the side facing the arc-shaped ring, and a limiting groove adapted to the limiting posts is opened on one side of the arc-shaped ring, and the limiting posts are inserted into the inner cavity of the corresponding limiting groove.

[0019] This utility model has at least the following beneficial effects:

[0020] This application adopts a separate design for the wheel hub assembly and the sprocket assembly. The sprocket assembly consists of a detachable arc-shaped ring. When some teeth wear, it is not necessary to replace the entire sprocket; only the worn arc-shaped ring needs to be removed and replaced. This effectively reduces the waste of unworn parts, simplifies maintenance operations, shortens maintenance time, and significantly reduces the user's maintenance costs and resource consumption. The wheel hub assembly is equipped with multiple types of mounting holes to adapt to the output shafts of different models of two-wheeled vehicles. There is no need to design sprockets separately for different vehicle models or equipment, reducing production and inventory costs and broadening the application scenarios of sprockets. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 3 This is an exploded view of the structure of this utility model;

[0024] Figure 4 This is an exploded view of the structure of the wheel hub assembly and chain tooth assembly of this utility model. Figure 1 ;

[0025] Figure 5 This is an exploded view of the structure of the wheel hub assembly and chain tooth assembly of this utility model. Figure 2 .

[0026] In the diagram: 100, hub assembly; 110, wheel body; 111, retaining ring; 112, limiting post; 120, center hole; 130, spline hole; 140, connecting hole; 141, first mounting hole; 142, second mounting hole; 1421, first through hole; 1422, second through hole; 200, chain tooth assembly; 210, arc ring; 211, limiting groove; 220, wheel tooth; 300, through hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5This utility model provides a multi-specification integrated sprocket, including a hub assembly 100 and a tooth assembly 200. The tooth assembly 200 is detachably connected to the hub assembly 100. The hub assembly 100 includes a wheel body 110 with mounting holes. A retaining ring 111 adapted to the tooth assembly 200 is integrally formed on the outer surface of the wheel body 110. The tooth assembly 200 includes at least two arc-shaped rings 210 symmetrically arranged on one side of the retaining rings 111. The inner peripheral wall of the arc-shaped rings 210 is tightly fitted to the wheel body 110, and the outer peripheral wall of the arc-shaped rings 210 is integrally formed with teeth 220. The ring 210 and the retaining ring 111 are connected and fixed by bolts and nuts. Both the arc-shaped ring 210 and the retaining ring 111 have through holes 300 for the bolts to pass through. The design of the hub assembly 100 and the detachable chain tooth assembly 200 fundamentally solves the problem of needing to replace the entire sprocket after it wears. The detachable feature of the arc-shaped ring 210 enables local maintenance, reducing costs and resource waste. The cooperation between the bolts and the through holes 300 ensures a stable connection between the chain tooth assembly 200 and the hub assembly 100, ensuring the structural reliability during transmission and laying the foundation for subsequent multi-specification adaptation and precise installation.

[0029] The mounting holes include a central hole 120 located at the center of the wheel body 110. The inner cavity of the central hole 120 has four spline holes 130 arranged in an annular pattern at equal intervals. The inner diameter of the spline holes 130 is larger than the inner diameter of the central hole 120. Through the combination of the central hole 120 and the spline holes 130, the wheel hub assembly 100 can be adapted to the output shaft of two-wheeled motor vehicles with different internal dimensions, directly improving the basic adaptability of the wheel hub assembly 100 and providing core support for the versatility of the sprocket.

[0030] The assembly hole also includes a connecting hole 140 on the surface of the wheel body 110, which is located near the center hole 120. The connecting hole 140 includes a first mounting hole 141 and a second mounting hole 142. There are four first mounting holes 141 and four second mounting holes 142 in a ring at equal intervals, and the first mounting holes 141 and the second mounting holes 142 are spaced apart. By setting the spaced first mounting holes 141 and the second mounting holes 142, the installation and adaptation scenarios of the wheel hub assembly 100 are further expanded. The combination of the two mounting holes can meet the needs of different installation methods and different types of connectors, so that the sprocket can be adapted to more models of equipment output shafts, further enhancing its versatility.

[0031] The first mounting hole 141 is a rectangular elongated hole with two short sides set as semi-circular chamfers. The rectangular elongated hole structure of the first mounting hole 141 allows for fine adjustment of the position of the connector during installation, which can adapt to small dimensional errors in the assembly process and improve assembly flexibility. The semi-circular chamfers can avoid stress concentration at the corners of the mounting hole, reduce the risk of cracks, and enhance the structural strength and service life of the wheel hub assembly 100.

[0032] The second mounting hole 142 is composed of a first through hole 1421 and a second through hole 1422. The inner cavities of the first through hole 1421 and the second through hole 1422 are interconnected, and both the first through hole 1421 and the second through hole 1422 are circular holes. The second mounting hole 142 is composed of two interconnected circular holes, which can be compatible with two different sizes of connectors. There is no need to make separate holes for connectors of different sizes, which greatly improves the adaptability of the second mounting hole 142 and further broadens the compatibility range of the sprocket with connector specifications.

[0033] The inner diameter of the first through hole 1421 is equal to the inner diameter of the semi-circular chamfer of the first mounting hole 141, and the inner diameter of the second through hole 1422 is greater than the inner diameter of the first through hole 1421. By limiting the relationship between the inner diameters of the first through hole 1421 and the chamfer of the first mounting hole 141, and the difference in the inner diameters of the second through hole 1422 and the chamfer of the first through hole 141, the consistency of size matching during installation is ensured. This avoids loosening or unstable installation of the connectors due to size mismatch, and the different inner diameter designs achieve stable adaptation of the two connectors, improving installation reliability.

[0034] The center of the first through hole 1421 and the center of one half of the circular chamfer of the first mounting hole 141 are on the same circle, and the center of the second through hole 1422 and the center of the other half of the circular chamfer of the first mounting hole 141 are on the same circle. This ensures that the center of the first through hole 1421 and the second through hole 1422 are on the same circle as the two chamfer centers of the first mounting hole 141, so that the stress points of the connecting parts are evenly distributed on the same circumference during installation. This avoids the hub assembly 100 from rotating eccentrically due to force offset, ensures the smoothness of power transmission, reduces the additional wear caused by eccentricity, and extends the life of the sprocket and mating parts (chain, output shaft).

[0035] Among them, the retaining ring 111 has at least two limiting posts 112 integrally formed on the side facing the arc ring 210. The arc ring 210 has a limiting groove 211 adapted to the limiting post 112 on one side. The limiting post 112 is inserted into the inner cavity of the corresponding limiting groove 211. The cooperation between the limiting post 112 and the limiting groove 211 realizes the rapid positioning of the chain tooth assembly 200 without repeated calibration, which greatly improves the assembly efficiency. At the same time, the limiting structure can limit the displacement of the arc ring 210 during the transmission process, ensure the relative position stability of the chain tooth assembly 200 and the hub assembly 100, avoid the decrease in transmission accuracy caused by displacement, and ensure the overall transmission stability.

[0036] The working principle of this utility model is as follows: according to the specifications and installation requirements of the equipment output shaft, select the corresponding assembly structure on the hub assembly 100, and use the cooperation of the center hole and the spline hole to fit the hub assembly 100 onto the output shaft; select the first mounting hole 141 or the second mounting hole 142 in the connection hole, and use the connector to firmly connect the hub assembly 100 and the output shaft.

[0037] The arc-shaped ring 210 is attached to the wheel body 110, and the limiting post 112 on the retaining ring 111 is inserted into the limiting groove 211 of the arc-shaped ring 210 to complete the rapid and accurate positioning of the arc-shaped ring 210. Then, the bolt is passed through the through hole 300 on the arc-shaped ring 210 and the retaining ring 111, and tightened with the nut to form a stable connection between the arc-shaped ring 210 and the wheel hub assembly 100. Multiple arc-shaped rings 210 are spliced ​​together to form a complete chain tooth transmission structure.

[0038] When the equipment is running, the output shaft drives the hub assembly 100 to rotate synchronously. The hub assembly 100 drives the chain tooth assembly 200 to rotate together through the transmission action of the retaining ring 111 and the bolt. The teeth 220 of the chain tooth assembly 200 mesh with the chain, transmitting power to the chain and realizing the power transmission of the equipment. When some teeth 220 are worn, simply unscrew the bolts and nuts corresponding to the worn arc ring 210, remove the worn arc ring 210 and replace it with a new arc ring 210. Then, fix it with the limit post 112 and the bolt to quickly restore the chain drive function.

[0039] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-specification integrated sprocket, characterized by, Includes a hub assembly (100) and a sprocket assembly (200), the sprocket assembly (200) being detachably connected to the hub assembly (100), wherein: The hub assembly (100) includes a wheel body (110), which has mounting holes and an integrally formed retaining ring (111) on the outer surface of the wheel body (110) that is compatible with the chain tooth assembly (200). The chain tooth assembly (200) includes at least two arc-shaped rings (210) symmetrically arranged on one side of the retaining ring (111). The inner peripheral wall of the arc-shaped ring (210) is tightly fitted with the wheel body (110). The outer peripheral wall of the arc-shaped ring (210) is integrally formed with wheel teeth (220). The arc-shaped ring (210) and the retaining ring (111) are connected and fixed by bolts and nuts. Both the arc-shaped ring (210) and the retaining ring (111) are provided with through holes (300) for bolts to pass through.

2. The multi-specification integrated sprocket according to claim 1, characterized in that: The assembly hole includes a central hole (120) located at the center of the wheel body (110). The inner cavity of the central hole (120) is provided with four spline holes (130) that are equidistantly distributed in an annular pattern. The inner diameter of the spline holes (130) is larger than the inner diameter of the central hole (120).

3. The multiple specification integrated sprocket as set forth in claim 2, wherein: The mounting hole also includes a connecting hole (140) formed on the surface of the wheel body (110), the connecting hole (140) being located near the center hole (120), wherein: The connecting hole (140) includes a first mounting hole (141) and a second mounting hole (142). The first mounting hole (141) and the second mounting hole (142) are each arranged in a ring with four holes at equal intervals, and the first mounting hole (141) and the second mounting hole (142) are spaced apart.

4. The multi-specification integrated sprocket according to claim 3, characterized in that: The first mounting hole (141) is a rectangular elongated hole, and the two short sides are set with semi-circular chamfers.

5. The multiple specification integrated sprocket as set forth in claim 4, wherein: The second mounting hole (142) is composed of a first through hole (1421) and a second through hole (1422). The inner cavities of the first through hole (1421) and the second through hole (1422) are interconnected, and both the first through hole (1421) and the second through hole (1422) are circular holes.

6. The multiple specification integrated sprocket as set forth in claim 5, wherein: The inner diameter of the first through hole (1421) is equal to the inner diameter of the semi-circular chamfer of the first mounting hole (141), and the inner diameter of the second through hole (1422) is greater than the inner diameter of the first through hole (1421).

7. The multiple specification integrated sprocket as set forth in claim 6, wherein: The center of one half of the circular chamfer of the first through hole (1421) and the first mounting hole (141) is on the same circle, and the center of the other half of the circular chamfer of the second through hole (1422) and the first mounting hole (141) is on the same circle.

8. The multiple specification integrated sprocket as set forth in any one of claims 1-7, wherein: The retaining ring (111) has at least two limiting posts (112) integrally formed on the side facing the arc ring (210). The arc ring (210) has a limiting groove (211) adapted to the limiting post (112) on one side. The limiting post (112) is inserted into the inner cavity of the corresponding limiting groove (211).

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