Disc brake mounting mechanism for rear wheel of motorcycle

Abstract

The utility model provides a disc brake mounting mechanism for a rear wheel of a motorcycle, and belongs to the technical field of motorcycles. The left box shell comprises a left box shell body which is combined to form an engine shell body, an output hole used for rotation of a rear wheel is formed in the rear side of the left box shell body, a connecting frame with one end fixed to a frame is arranged on one side of the output hole, and a bearing hole seat coaxial with the output hole is formed at the end of the connecting frame. A hub is arranged between the output hole and the bearing hole seat, a disc brake disc is fixed to one side of the hub, a mounting hole seat is arranged on the outer wall of the left box shell, and piston calipers used for being matched with the disc brake disc are fixed to the mounting hole seat through bolts. The utility model has the advantages of reducing precision error and noise and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of motorcycles, in particular to a disc brake mounting mechanism for a rear wheel of a motorcycle. Background Art

[0002] At present, most motorcycles on the market use drum brakes and right disc brakes on the rear wheels. Drum brakes are gradually being eliminated due to their poor braking force. The right disc brake is installed on the connecting plate, and the caliper position accuracy is not high due to the overlapping installation accessories. In this mechanism, the most common problem with the caliper on the disc brake used to lock the disc brake disc is swinging. The main reason is that the rear wheel of a motorcycle is usually provided with a connecting frame connected to one side of the frame on one side, which forms a rear fork structure and is used to fix the rear wheel, and the traditional piston pump for disc brakes is set on the connecting frame by bolts, and the front end of the connecting frame is directly installed on the engine housing, and the rear end of the connecting frame is connected to the engine housing through bushings, bearings, rear wheel rims, and rear wheel axles. Due to the large number of installed and connected accessories, the installation accuracy of the caliper is reduced geometrically, and the front and rear installation heights of the connecting plates do not produce a large precision error, causing the disc brake disc and the caliper to be non-parallel, resulting in eccentric wear during normal driving, and the contact area between the disc brake disc and the friction plate on the caliper is small, resulting in insufficient braking force. Due to the non-parallelism of the disc brake disc and the caliper, resonance is caused and noise is generated. At the same time, the friction plates in the disc brake system of high-end motorcycles wear unevenly, which will cause the friction plates to fail to achieve their expected lifespan and increase the occurrence of safety accidents. Summary of the invention

[0003] The purpose of the utility model is to solve the above-mentioned problems and provide a disc brake mounting mechanism for a motorcycle rear wheel, which effectively solves the problem of installation accuracy of the plunger pump in the disc brake mechanism, reduces resonance noise, and ensures the brake service life of the motorcycle rear wheel.

[0004] The purpose of the utility model is achieved in this way:

[0005] A disc brake mounting mechanism for a rear wheel of a motorcycle comprises a left case shell which is combined to form an engine housing, an output hole for rear wheel rotation is provided on the rear side of the left case shell, a connecting frame with one end fixed to a frame is provided on one side of the output hole, a bearing hole seat coaxial with the output hole is formed on the end of the connecting frame, a wheel hub with a disc brake disc fixed on one side is provided between the output hole and the bearing hole seat, a mounting hole seat is provided on the outer wall of the left case shell, a piston caliper for adapting to the disc brake disc is fixed to the mounting hole seat by bolts.

[0006] The utility model is further configured that the number of the mounting hole seats is two, and the distances between the hole centers of the two mounting hole seats and the center of the output hole are the same.

[0007] The utility model is further configured such that the mounting hole seat and the left box shell are integrally cast.

[0008] The utility model is further configured that the disc brake disc is fixedly connected to one side of the wheel hub through a flange structure.

[0009] The utility model is further configured that a tight-fitting portion is formed on the housing of the piston caliper, a screw hole is opened on the tight-fitting portion, and the bolt passes through the mounting hole seat and the screw hole in sequence to achieve tight fitting.

[0010] The utility model is further configured that the bolt is a hexagon socket bolt.

[0011] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0012] 1. The disc brake mounting mechanism provided by the utility model is fixed on the engine housing compared to the traditional piston caliper, which greatly reduces the processing accuracy. The piston caliper can adapt to the disc brake disc more accurately, making it less likely to deviate after long-term use, thereby reducing the generation of noise and reducing the maintenance rate.

[0013] 2. The utility model further forms the mounting hole seat in one piece, thereby improving the structural strength and making the piston caliper more secure after installation.

[0014] 3. The utility model provides a tight-fitting portion on the piston caliper, which has low processing difficulty and is easy to adapt to the mounting hole seat.

[0015] 4. The middle bolt of the utility model is a hexagon socket bolt for the convenience of installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0018] Figure 3 It is an explosion schematic diagram of the utility model;

[0019] Reference numerals:

[0020] 1-left box shell; 10-output hole; 11-mounting hole seat;

[0021] 2-connecting frame; 20-bearing hole seat;

[0022] 3-wheel hub; 30-disc brake disc;

[0023] 4-bolt; 5-piston caliper; 50-tight fitting part; 51-screw hole. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings. Figure 1 — Figure 3 :

[0025] A disc brake mounting mechanism for a rear wheel of a motorcycle comprises a left case shell 1 which is combined to form an engine housing, an output hole 10 for rear wheel rotation is provided on the rear side of the left case shell 1, a connecting frame 2 with one end fixed to a frame is provided on one side of the output hole 10, a bearing hole seat 20 coaxial with the output hole 10 is formed on the end of the connecting frame 2, a wheel hub 3 with a disc brake disc 30 fixed on one side is provided between the output hole 10 and the bearing hole seat 20, a mounting hole seat 11 is provided on the outer wall of the left case shell 1, a piston caliper 5 for adapting to the disc brake disc 30 is fixed to the mounting hole seat 11 by bolts 4.

[0026] During the implementation process, it is different from the traditional disc brake installation mechanism in that a mounting hole seat for installing the piston caliper is formed on one side of the left case body of the engine, and the piston caliper is tightly fitted and fixed to it to make it adapt to the wheel hub equipped with the disc brake disc. Unlike the traditional installation on the connecting frame, the installation on the left case shell can make it easier to control the precision, so that after the piston caliper is installed, the disc brake disc can be braked more accurately, thereby effectively preventing the offset problem caused by precision and generating resonance noise.

[0027] Preferably, there are two mounting hole seats 11, and the distances between the hole centers of the two mounting hole seats 11 and the center of the output hole 10 are the same.

[0028] In the above structure, the centers of the two mounting holes 11 are the same as the center of the output hole 10, which not only enables the assembled piston caliper to be more evenly stressed when fixed, but also helps to improve the balance of the multi-piston caliper.

[0029] Preferably, the mounting hole seat 11 and the left box shell 1 are integrally cast, thereby improving the overall structural strength.

[0030] Preferably, the disc brake disc 30 is fixedly connected to one side of the wheel hub 3 via a flange structure. The specific operation method is that a flange is formed inside the disc brake disc 30, and is adapted to a screw hole opened on one side of the wheel hub, and then fastened and adapted by an external hexagonal bolt.

[0031] Preferably, a tight-fitting portion 50 is formed on the housing of the piston caliper 5 , and a screw hole 51 is opened on the tight-fitting portion 50 , and the bolt 4 passes through the mounting hole seat 11 and the screw hole 51 in sequence to achieve a tight fit.

[0032] In the above structure, the independently formed tight-fitting part 50 can prevent the bolt 4 from penetrating the plunger pump housing, thereby ensuring the reasonable braking operation of the internal plunger.

[0033] Preferably, the bolt 4 is a hexagon socket bolt, which is convenient for installation.

[0034] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A disc brake mounting mechanism for a motorcycle rear wheel, characterized in that: The invention comprises a left case (1) which is combined to form an engine housing, an output hole (10) for rear wheel rotation is provided on the rear side of the left case (1), a connecting frame (2) having one end fixed to a vehicle frame is provided on one side of the output hole (10), a bearing hole seat (20) coaxial with the output hole (10) is formed on the end of the connecting frame (2), a wheel hub (3) having a disc brake disc (30) fixed on one side is provided between the output hole (10) and the bearing hole seat (20), an outer wall of the left case (1) is provided with a mounting hole seat (11), a piston caliper (5) for adapting to the disc brake disc (30) is fixed to the mounting hole seat (11) by means of bolts (4).

2. The disc brake mounting mechanism for the rear wheel of a motorcycle according to claim 1, characterized in that: The number of the mounting hole seats (11) is two, and the distances between the hole centers of the two mounting hole seats (11) and the center of the output hole (10) are the same.

3. The disc brake mounting mechanism for the rear wheel of a motorcycle according to claim 1 or 2, characterized in that: The mounting hole seat (11) and the left box shell (1) are integrally cast.

4. The disc brake mounting mechanism for the rear wheel of a motorcycle according to claim 1, characterized in that: The disc brake disc (30) is fixedly connected to one side of the wheel hub (3) via a flange structure.

5. The disc brake mounting mechanism for the rear wheel of a motorcycle according to claim 1 or 2, characterized in that: A tight-fitting portion (50) is formed on the housing of the piston caliper (5), a screw hole (51) is provided on the tight-fitting portion (50), and the bolt (4) sequentially penetrates the mounting hole seat (11) and the screw hole (51) to achieve a tight fit.

6. The disc brake mounting mechanism for the rear wheel of a motorcycle according to claim 5, characterized in that: The bolt (4) is a hexagon socket bolt.

Images