A type r bicycle brake

Abstract

The invention relates to an R-type bicycle brake. The R-type bicycle brake comprises two L-shaped sliding grooves and a brake block. The two L-shaped sliding grooves are arranged oppositely. The brake block is installed on a push rod, and a horizontal rod at one end of the push rod stretches into the horizontal parts of the L-shaped sliding grooves and slides in the horizontal parts. A sliding rod is arranged in the vertical parts of the L-shaped sliding grooves in a vertical sliding mode, the upper end of the sliding rod is connected with the horizontal rod through a connecting piece, and a tension spring is connected between the sliding rod and the lower ends of the L-shaped sliding grooves. The R-type bicycle brake is simple in structure; based on the triangle belt transmission principle, the moving distance of the push rod is large, and replacement of parts is flexible; the closer to a steel ring the brake block is, the larger the supporting force on the push rod from the sliding rod will be, namely, the smaller the included angle between the sliding rod and the push rod is, the larger the holding force on the steel ring from brake blocks on the two sides will be.

Description

technical field [0001] The invention relates to the field of bicycle brakes, in particular to an R-type bicycle brake. Background technique [0002] When the bicycle brakes, it is a very important system in the bicycle. There are mainly two types of existing bicycle brakes. One is to use the principle of leverage to make two swing arms connected at one end rotate relative to the wheel hub; the other is V-shaped. Brake structure, this kind of brake structure has rapid braking, strong braking force, and cheap maintenance, and is widely used. [0003] However, both of the above two brake structures have a problem, that is, the swing angle of the bicycle hand brake is limited. When the corresponding brake pads are in contact with the wheel hub, the bicycle hand brake has moved to the final limit position, and the clamping force is also at a relatively low level. At the small position, the clamping force between the brake pad and the wheel hub is also the smallest at this time, ...

AI Technical Summary

Problems solved by technology

[0003] However, both of the above two brake structures have a problem, that is, the swing angle of the bicycle hand brake is limited. When the corresponding brake pads are in contact with the wheel hub, the bicycle hand brake has moved to the final limit position, and the clamping force is also at a relatively low level. At the small position, the clamping force between the brake pad and the wheel hub is also the smallest at this time, and it often fails to brake after long-term use.

[0004] In addition, due to the limited activity space of the bicycle hand brake, the displacement of the brake pads is also relatively short, which leads to the distance between the brake pads and the hub only less than 2mm when they return to their original positions. Once the brake structure is collided, it is easy to use The position of the brake pads is deformed and shifted, so that the brake pads are always in contact with the hub, which affects the normal riding of the bicycle

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