Mechanical disk brake

Abstract

A mechanical type dish brake. At least one of the two friction plate is installed follower in the dish brake body. The follower is installed a follow bevel on the back of the friction plate, alpha which is the follow lead angle of the follow bevel is from zero to twenty degree. Component which is connected to the back of friction is installed fixing bevel which is cooperated with the follow bevel. Man holds the brake before the contact reach to fastness of the friction dish and dish brake pan, between them can produce friction force along the dish brake pan tangent direction. With the action of the friction force, the friction dish swings along the follow bevel.

Description

Technical field [0001] The invention relates to a braking device, in particular to a mechanical bicycle disc brake. Background technique [0002] Mechanical disc brake includes two parts: disc brake disc and brake caliper, and the brake disc is fixedly connected with the wheel hub. The brake caliper is mainly composed of a disc brake caliper body with built-in friction plates and a driving device, a bracket, and a floating connection structure with an adjusting floating device connected to the disc brake caliper body and the bracket. The brake caliper is fixedly connected with two installation fulcrums on the frame through two corresponding threaded holes. The driving device of the disc brake caliper body is to pull the drive shaft to rotate through the steel rope. The drive disc is installed on the drive shaft. The drive disc pushes the friction plate to clamp the disc through the transmission mode of 2 to 3 spiral surfaces. The disc brake with this transmiss...

AI Technical Summary

Problems solved by technology

The driving device of the disc brake caliper is to pull the drive shaft to rotate through the steel rope. The drive shaft is equipped with a drive disc. The drive disc pushes the friction plate to clamp the disc through the transmission mode of 2 to 3 helical surfaces. The disc brake with this transmission structure , the existing problems are as follows: ①In the range of the effective rotation angle of the drive disc, the braking force is inversely proportional to the stroke of the friction plate. When the braking force increases, the helix angle of the drive plate decreases, and the stroke of the friction plate is small, that is, the distance between the two friction plates The spacing is reduced

Conversely, if the stroke of the friction plate increases, the braking force will decrease, which cannot meet the requirements of use. Due to the constraints of the drive structure, it is difficult to achieve both. It has an ideal effect, but there is a problem that the same effective braking force can only be obtained when the friction plate is adjusted to a limited distance, that is, when the distance is adjusted to within 2.5mm, the braking effect is extremely poor; ③Because of the structure, if a better Braking force, its hand operation force exceeds the grip strength of ordinary people, which is easy to make people feel tired; ④ Since the manufacturing precision of the driving disc is not high, it will affect the braking force, and even self-locking phenomenon will occur, so the manufacturing accuracy of the driving disc is required higher, increasing production costs

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