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Drum brake and straddle-type vehicle

A technology of drum brakes and brake shoes, which is applied in the direction of drum brakes, brake types, brake components, etc., can solve problems such as time and effort, and achieve the effect of preventing brake noise

Active Publication Date: 2008-12-03
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] There are other problems: since the brake noise preventer is made up of multiple parts; a pair of vibration dampening elements and a strip; the higher the number of parts, the more time and effort is required to assemble the brake drum

Method used

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  • Drum brake and straddle-type vehicle
  • Drum brake and straddle-type vehicle
  • Drum brake and straddle-type vehicle

Examples

Experimental program
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Embodiment Construction

[0033] A drum brake and a saddled vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. First, refer to figure 1 A straddle type vehicle having drum brakes related to the embodiment will be introduced. figure 1 It is a right side view of the straddle type vehicle (motorcycle) related to the embodiment.

[0034] In the same figure, the body frame 10 of the motorcycle 1 is a cradle type frame, and the front fork 11 is rotatably connected to the steering head pipe 10a at the front end of the body frame 10 . A front wheel WF is rotatably supported on the lower end of the front fork 11, and the front wheel has a front fender to cover the front wheel WF. A handlebar 12 is connected to the upper end of the front fork 11 .

[0035] The steering head pipe 10a is connected with the left and right main frame 10b extending downward obliquely and the left and right down tube 10c extending downward. in the surrou...

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PUM

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Abstract

A drum brake, and a straddle-type vehicle provided with a drum brake, has a simple construction that is capable of effectively preventing brake squeal. An installation member 80 is positioned adjacent a brake drum 30 in the wheel shaft direction. A shoe plate 40 is provided and brake shoes 50 are pivotable relative thereto. The installation member 80 has a first portion 81A and a second portion 81B. The first portion 81A is fixed to the shoe plate 40 or another member. The second portion 81B is fixed to or pressed against the shoe plate 40. The natural frequency of a portion of the installation member between the first portion 81A and the second portion 81B is different from the natural frequency of the shoe plate 40.

Description

technical field [0001] The present invention relates to a drum brake for straddle-type wheels such as motorcycles, four-wheeled light vehicles, snowmobiles, and straddle-type vehicles having the brakes, in particular to drum brakes which are simple in structure and capable of preventing braking squeaking noises and straddle vehicles. Background technique [0002] In some straddle vehicles such as motorcycles, quads, snowmobiles, the wheels have drum brakes. Drum brakes are generally constructed to brake by pressing the brake shoe against the inner surface of the rotating drum to create friction. One problem with the drum brake of the above structure is that there is a sharp noise during braking: when the friction vibration of the brake drum and the brake shoe is consistent with the natural frequency of the brake components such as the brake drum, brake shoe, shoe plate, etc. Resonance occurs, resulting in harsh noises. [0003] Therefore, conventionally, attempts have bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/00
CPCF16D65/12F16D65/0018F16D51/00
Inventor 松村和典佐佐木达矢小屋孝男野口丰胜
Owner YAMAHA MOTOR CO LTD
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