CN204688329U - Bicycle dished brake device - Google Patents

Abstract

The utility model relates to a bicycle disc brake, the structure of which comprises a brake body, a pull handle, a support arm, a U-shaped spring, a brake shoe and a return spring. The brake body is divided into a left brake body and a right brake body, which are connected by bolts. The brake shoes are also divided into a left brake shoe and a right brake shoe. The inner middle parts of the two brake shoes are respectively provided with cuboid grooves. The left and right brake shoes are respectively installed inside the left and right brake bodies, the U-shaped springs are embedded in the grooves of the left and right brake shoes, the two ends of the return spring are respectively connected to the support arm and the handle, the fixed pulley is fixed and The support arm and the pull handle can freely rotate an angle around the eccentric pin shaft under the pull of the brake line to push the brake shoe to move towards the disc. The utility model has the advantages of simple structure, low requirements on machining accuracy, less material consumption, and reduced cost on the premise of satisfying the braking effect.

Description

bicycle disc brake

technical field

The utility model relates to a bicycle disc brake, which belongs to the technical field of mechanical manufacturing. Background technique

At present, the common bicycle brake calipers on the market are friction rubber type or disc brake type. The cost of the friction rubber type is low, but the performance is not good enough, and the uneven wear of the left and right brake pads often occurs, resulting in a decrease in braking performance or even failure. The performance of the disc brake is excellent, the braking effect and the riding comfort during braking are better, but the structure is complex, the processing accuracy of some parts is high, and more materials are used, and the cost is higher.

Contents of the invention

After thinking and research, the inventor designed and improved a bicycle disc brake with a new structure, which solved the problem of incompatibility between current technology and cost. The technical scheme of the utility model is as follows: the bicycle disc brake comprises a brake body, a pull handle, a support arm, a U-shaped spring, a brake shoe, and a return spring. The brake body is divided into a left brake body and a right brake body, and the brake shoe is also divided into a left brake shoe and a right brake shoe. The inner middle parts of the two brake shoes are respectively provided with cuboid grooves. The installation method is to install the left and right brake shoes inside the left and right brake bodies respectively, the U-shaped spring is embedded in the groove of the left and right brake shoes, the two ends of the return spring are respectively connected to the support arm and the handle, and the fixed pulley is connected with a pin or other installed in the support arm. The head of the handle is an eccentric structure, and the eccentric structure is in contact with the brake shoe. A fixed pulley is installed in the hollow structure of the head of the support arm to change the direction of the brake line. bit spring. The above-mentioned pull handle is connected on the left brake body with a pin, and the pull handle head is closely attached to the left brake shoe, and the pull handle can rotate relative to the pull handle head eccentric shaft.

The beneficial effect of the bicycle disc brake of the utility model is that it overcomes the disadvantages of the traditional disc brake, such as complex structure, high processing accuracy requirements for some parts, high material consumption, and high cost, and realizes the structure on the premise of satisfying the braking effect Simple, low-cost and economical, suitable for widespread promotion and use.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model bicycle disc brake.

Marks in the picture: 1. Fixed pulley, 2. Brake line, 3. Return spring, 4. Pull handle, 5. Pull handle head, 6. Left brake body, 7. Left brake shoe, 8. Disc, 9. Right brake shoe, 10. Right brake body, 11. U-shaped spring, 12. Support arm.

Detailed ways

The embodiments of the utility model are described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly. As shown in Figure 1, the bicycle disc brake comprises a left brake body (6), a right brake body (10), a left brake shoe (7), a right brake shoe (9), a support arm (12), a handle (4). The left brake body (6) and the right brake body (10) are connected by two bolts; the U-shaped spring (11) is embedded in the middle of the left brake shoe and the right brake shoe; the fixed pulley (1) is installed on the support arm ( 12) In the hollow structure of the head: the two ends of the return spring (3) are respectively connected with the handle (4) and the support arm (12). The working principle of the above-mentioned disc brake is: the brake line (2) bypasses the fixed pulley (1) and passes through the return spring to connect with the pull handle (4). The purpose of the fixed pulley 1 is to change the pulling direction of the brake line 2 and to change the sliding friction between the traditional brake line and the support arm into rolling friction with less friction; when the brake line (2) is tightened, the handle ( 4) It will rotate an angle around the pin shaft on the handle head (5) and press the return spring (3). Since the handle head (5) is an eccentric structure, when the brake line (2) is pulled, The left brake shoe gradually approaches until the disc (8) is pressed to complete the brake. When the brake line is released, the pull handle will spring back to its original position by the compressed return spring, and at the same time, the left brake shoe (7) and right brake shoe (9) will return to their original positions under the action of the U-shaped spring (11) , so that the left and right brake shoes are separated from the disc.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any change or replacement obtained without creative work should be covered within the scope of protection of the utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (1)

1. a Bicycle dished brake device, comprise brake body, brake shoe brake cheek, pull back spring, hold-down arm, u-shaped spring, it is characterized in that: pull handle head is eccentric structure, this eccentric structure contacts with brake shoe brake cheek, the fixed pulley changing brake cable direction is installed in support arm head hollow structure, the pull back spring making pull handle return is installed between pull handle and hold-down arm.