A new chain adjuster for a motorcycle

Abstract

The utility model relates to a motorcycle rear wheel system technical field especially relates to a new type chain adjuster of motorcycle, including adjuster body, the middle part of adjuster body is provided with the mounting hole of adaptation with rear wheel axle, and one end of adjuster body is installed with adjusting lever, and adjusting lever can rotate relative to adjuster body, and the inside of adjuster body is provided with adjusting groove, and adjusting lever penetrates adjuster body and is located the inside of adjusting groove, and the surface of adjusting lever has screw thread, and the inside of adjusting groove is installed with rear rocker arm, and adjusting lever penetrates rear rocker arm, and the screw thread on the surface of adjusting lever cooperates with rear rocker arm, and the surface of adjuster body is provided with scale line, and the marking direction of scale line is consistent with the axial direction of adjusting lever. Through the ingenious cooperation between adjusting lever and rear rocker arm installed on adjuster body, the position of wheel relative to rear rocker arm can be adjusted without disassembling rear wheel, and the purpose that the tightness degree of chain is adjusted quickly is realized.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle rear wheel system technology, and in particular to a novel chain adjuster for motorcycles. Background Technology

[0002] The core function of a motorcycle chain adjuster is to adjust chain tension, maintain transmission stability, ensure normal power transmission, and protect related components. Traditional motorcycle chain adjusters and rear caliper brackets are separate designs. During assembly, the adjuster and caliper bracket must be positioned and tightened separately, requiring individual calibration of both components. This is time-consuming, and the double positioning can lead to cumulative errors, potentially causing abnormal wear and tear on components and increasing the risk of malfunction. The two independent components each occupy their own installation space, resulting in a loose rear wheel system structure and hindering a compact layout. Furthermore, it increases the amount of bolts, locating pins, and other connecting parts used, thus increasing costs.

[0003] More importantly, existing chain adjusters are not convenient for adjusting the chain tension. The chain tension will change with vibration and friction during riding. If the chain is too loose, it is easy to fall off, and if it is too tight, it will increase transmission resistance and affect the normal driving of the motorcycle. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a novel chain adjuster for motorcycles.

[0005] The present invention adopts the following technical solution.

[0006] A novel chain adjuster for motorcycles includes an adjuster body with a mounting hole in the middle for fitting a rear wheel axle. An adjusting rod is mounted at one end of the adjuster body and is rotatable relative to the adjuster body. An adjusting groove is provided on the inner side of the adjuster body, and the adjusting rod passes through the adjuster body and is located inside the adjusting groove. The surface of the adjusting rod is threaded. A rear rocker arm is mounted inside the adjusting groove, and the adjusting rod passes through the rear rocker arm. The thread on the surface of the adjusting rod engages with the rear rocker arm. The surface of the adjuster body is provided with scale lines, and the marking direction of the scale lines is consistent with the axial direction of the adjusting rod.

[0007] To improve the accuracy of adjusting chain tension, slots are provided on both sides of the rear rocker arm, and the adjuster body is adapted to the slots.

[0008] To simplify the assembly process, two connectors are provided on the bottom of the regulator body. The two connectors are an integral structure that is inseparable from the regulator body, and the ends of the two connectors away from the regulator body have connection holes.

[0009] Preferably, a caliper is installed below the connector by a bolt passing through the connector hole.

[0010] To reduce weight while ensuring the strength of the rear wheel system, the adjuster body, connector, and rear swingarm are all made of aluminum alloy.

[0011] To improve the efficiency of installing and removing the rear wheel, a sliding bushing is provided at the end of the rear wheel axle near the adjuster body. The inner side of the adjuster body is provided with a straight groove, a fixed groove, and a curved groove, and the sliding bushing can slide along the straight groove, the fixed groove, and the curved groove.

[0012] Preferably, the straight groove, the fixed groove, the curved groove, and the regulator body are an inseparable integrated structure.

[0013] Preferably, both the bending groove and the fixing groove are arc-shaped grooves, the curvature of the fixing groove is the same as the curvature of the sliding bushing, and the bending groove bends upward from the connection point with the fixing groove.

[0014] Beneficial effects: The novel chain adjuster for motorcycles disclosed in this application not only simplifies the assembly process but also reduces weight while ensuring the strength of the rear wheel system. Furthermore, the ingenious combination of straight grooves, fixed grooves, curved grooves, and sliding bushings significantly improves the efficiency of installing and removing the rear wheel. More importantly, the cooperation between the adjusting rod, the adjuster body, and the rear swingarm makes adjusting the chain tension more convenient, reducing the tediousness and inconvenience caused by chain adjustment and enhancing the user's overall satisfaction and experience with the motorcycle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a novel chain adjuster for motorcycles according to this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the novel chain adjuster for motorcycles when connected to the rear swingarm, sliding bushing, and caliper.

[0018] Figure 3 This is a three-dimensional structural diagram of a novel chain adjuster for motorcycles, installed on the rear wheel system.

[0019] 1-Regulator body, 2-Rear wheel axle, 3-Mounting hole, 4-Adjusting rod, 5-Adjusting groove, 6-Rear rocker arm, 7-Scale line, 8-Slot, 9-Connector, 10-Connecting hole, 11-Caliper, 12-Sliding bushing, 13-Straight groove, 14-Fixing groove, 15-Bending groove, 16-Rear wheel. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.

[0021] Combination Figures 1-3 As shown, a novel chain adjuster for motorcycles includes an adjuster body 1. The adjuster body 1 has a mounting hole 3 in its center that is adapted to a rear wheel axle 2. An adjusting rod 4 is mounted on one end of the adjuster body 1 and is rotatable relative to the adjuster body 1. An adjusting groove 5 is provided on the inner side of the adjuster body 1. The adjusting rod 4 passes through the adjuster body 1 and is located inside the adjusting groove 5. The surface of the adjusting rod 4 has threads. A rear rocker arm 6 is mounted inside the adjusting groove 5, and the adjusting rod 4 passes through the rear rocker arm 6. The threads on the surface of the adjusting rod 4 engage with the rear rocker arm 6. A scale line 7 is provided on the surface of the adjuster body 1, and the marking direction of the scale line 7 is consistent with the axial direction of the adjusting rod 4.

[0022] The rear rocker arm 6 has slots 8 on both sides, and the adjuster body 1 is adapted to the slots 8.

[0023] The regulator body 1 has two connectors 9 at its lower part. The two connectors 9 are an integral structure that is inseparable from the regulator body 1, and the ends of the two connectors 9 away from the regulator body 1 have connection holes 10.

[0024] A clamp 11 is installed below the connector 9 by a bolt passing through the connector hole 10.

[0025] The regulator body 1, connector 9, and rear rocker arm 6 are all made of aluminum alloy.

[0026] Among them, a sliding bushing 12 is provided at one end of the rear wheel axle 2 near the adjuster body 1, and a straight groove 13, a fixed groove 14 and a curved groove 15 are provided on the inner side of the adjuster body 1, and the sliding bushing 12 can slide along the straight groove 13, the fixed groove 14 and the curved groove 15.

[0027] Among them, the straight groove 13, the fixed groove 14, the curved groove 15 and the regulator body 1 are an inseparable integrated structure.

[0028] Both the bending groove 15 and the fixing groove 14 are arc-shaped grooves. The curvature of the fixing groove 14 is the same as that of the sliding bushing 12, and the bending groove 15 bends upward from the connection with the fixing groove 14.

[0029] When installing the rear wheel 16, place the sliding bushings 12 at both ends of the rear wheel axle 2 on the straight grooves 13 on both sides of the adjuster body 1, and slide them toward the fixing groove 14 until the sliding bushings 12 are moved to the end of the curved groove 15. Then, put the motorcycle chain on the sprocket on one side of the rear wheel 16, and then pull the sliding bushings 12 back into the fixing groove 14. At this time, the chain on the sprocket will be tightened. Finally, insert the rear wheel axle 2 to fix the rear wheel 16, and the installation of the rear wheel 16 is complete.

[0030] When disassembling the rear wheel 16, pull out the rear wheel axle 2 and push the rear wheel 16 in the direction of the curved groove 15, so that the sliding bushing 12 moves to the end of the curved groove 15. At this time, the chain will be loose and can be removed. Then pull the sliding bushing 12 out in the direction of the straight groove 13 to complete the disassembly of the rear wheel 16.

[0031] When chain tension needs adjustment, there is no need to remove the rear wheel 16 or sprocket. Simply rotate the adjusting rod 4 extending from the adjusting body 1. The relative position between the adjusting rod 4 and the rear rocker arm 6 can be controlled by the thread on the surface of the adjusting rod 4 that mates with the rear rocker arm 6. At the same time, when the adjusting rod moves, it will drive the rear wheel 16 and the sprocket mounted on the rear wheel 16 to move together, achieving the purpose of adjusting chain tension without removing the rear wheel 16. Furthermore, while rotating the adjusting rod 4, the relative position between the adjusting rod and the rear rocker arm 6 can be precisely determined by the scale line 7, thereby achieving precise adjustment of the position of the rear wheel 16 and the chain tension.

[0032] This application discloses a novel chain adjuster for motorcycles that integrates the chain adjuster with the rear caliper bracket, simplifying the structure, reducing costs, improving installation accuracy, and optimizing space utilization for more efficient coordination between the transmission and braking systems. It also reduces the steps and complexity of disassembly and assembly, thereby ensuring motorcycle stability and lowering user costs. Furthermore, the entire rear wheel system can be installed and disassembled simply through the engagement of the sliding bushing 12 with the straight groove 13, fixed groove 14, and curved groove 15. The entire process can be completed quickly by a single person, enabling even a single person to replace the rear wheel 16, reducing labor costs and significantly improving efficiency. More importantly, the ingenious coordination between the scale line 7, adjusting rod 4, adjuster body 1, and rear swingarm 6 reduces the tediousness and inconvenience associated with chain adjustment, enhancing user satisfaction and overall motorcycle experience.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A novel chain adjuster for motorcycles, comprising an adjuster body (1), characterized in that: The regulator body (1) has a mounting hole (3) in the middle that is adapted to the rear wheel axle (2). An adjusting rod (4) is installed at one end of the regulator body (1). The adjusting rod (4) can rotate relative to the regulator body (1). An adjusting groove (5) is provided on the inner side of the regulator body (1). The adjusting rod (4) passes through the regulator body (1) and is located inside the adjusting groove (5). The surface of the adjusting rod (4) has threads. A rear rocker arm (6) is installed inside the adjusting groove (5). The adjusting rod (4) passes through the rear rocker arm (6). The threads on the surface of the adjusting rod (4) are engaged with the rear rocker arm (6). A scale line (7) is provided on the surface of the regulator body (1). The marking direction of the scale line (7) is consistent with the axial direction of the adjusting rod (4).

2. The novel chain adjuster for motorcycles as described in claim 1, characterized in that: The rear rocker arm (6) has slots (8) on both sides, and the regulator body (1) is adapted to the slots (8).

3. The novel chain adjuster for motorcycles as described in claim 1, characterized in that: Two connectors (9) are provided at the bottom of the regulator body (1). The two connectors (9) are an integral structure that is inseparable from the regulator body (1), and the ends of the two connectors (9) away from the regulator body (1) have connection holes (10).

4. The novel chain adjuster for motorcycles as described in claim 3, characterized in that: A caliper (11) is installed below the connector (9) by a bolt passing through the connector hole (10).

5. The novel chain adjuster for motorcycles as described in claim 1, characterized in that: The regulator body (1), connector (9) and rear rocker arm (6) are all made of aluminum alloy.

6. The novel chain adjuster for motorcycles as described in claim 1, characterized in that: A sliding bushing (12) is provided at one end of the rear wheel axle (2) near the regulator body (1). A straight groove (13), a fixed groove (14) and a curved groove (15) are provided on the inner side of the regulator body (1), and the sliding bushing (12) can slide along the straight groove (13), the fixed groove (14) and the curved groove (15).

7. The novel chain adjuster for motorcycles as described in claim 6, characterized in that: The straight groove (13), the fixed groove (14), the curved groove (15) and the regulator body (1) are an inseparable integrated structure.

8. The novel chain adjuster for motorcycles as described in claim 6, characterized in that: Both the bending groove (15) and the fixed groove (14) are arc-shaped grooves. The curvature of the fixed groove (14) is the same as that of the sliding bushing (12), and the bending groove (15) bends upward from the connection with the fixed groove (14).

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