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Precision full floating type drum brake

A drum brake, full floating technology, applied in the direction of mechanically driven drum brakes, brake parts, etc., can solve the problem of uneven friction surface, and achieve the effect of improving driving safety, reducing loss and prolonging service life.

Inactive Publication Date: 2010-11-24
杨群英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above structure enables the left and right brake shoes to achieve floating braking with the brake drum during braking, and increases the friction plate and the friction plate of the brake drum to make the braking effect better; however, In the long-term research and development, it is found that the friction surfaces of the left and right brake shoes are uneven, or the left or right friction plate wears faster than the other side

Method used

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  • Precision full floating type drum brake
  • Precision full floating type drum brake
  • Precision full floating type drum brake

Examples

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Embodiment Construction

[0032] Such as Figures 1 to 4 Shown: precision full-floating drum brake, including brake drum 1, brake base plate 2, master and slave brake shoes 3 and 4 symmetrically arranged on brake base plate 2, master and slave brake shoes 3 and 4 The supporting end connection holes 301, 401 are axially connected with the clamping part 9 corresponding to one end of the brake base plate 2, the opened ends of the main and slave brake shoes 3, 4 are free ends, and a camshaft passes through the other end of the brake base plate 2. The through hole of the convex part is in contact with the rollers at the free ends of the master and slave brake shoes 3 and 4, and one end of the rollers located at the master and slave brake shoes 3 and 4 is provided with a return spring 5, and the rollers of the master and slave brake shoes 3 and 4 The connection holes 301, 401 are oval-shaped with a certain gap between the upper and lower ends. The center of the support pin 10 that is plugged with the brake b...

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PUM

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Abstract

The invention discloses a precision full floating type drum brake for improving the relationship between a braking bottom plate and primary and secondary braking shoes. In the invention, the connecting holes of the primary and secondary shoes form an oval with certain clearance between upper and lower two ends, the circle center of a supporting pin matched with the braking bottom plate in a plug-in manner is a referential central point, the connecting hole of the primary braking shoe swings inward and forms an included angle of 16 to 45 DEG with a central line, and the connecting hole of the secondary braking shoe swings outward and forms an included angle of 46 to 82 DEG with the central line. The invention provides a precision floating quantum drum brake. The friction between a friction plate and a braking drum is uniform, the service lives of the friction plate and the brake are prolonged, the braking is more reliable, the braking efficiency is high, and the driving safety and comfortableness are improved.

Description

technical field [0001] The invention relates to a brake used for automobiles, in particular to a precision full-floating drum brake. Background technique [0002] The traditional drum brake is mainly composed of brake base plate, brake drum, brake shoe, wheel cylinder or camshaft, return spring, positioning pin and other components. The brake bottom plate is installed on the fixed position of the axle, such as: the front and rear axle housings, which are fixed, and are equipped with brake shoes, camshafts or wheel cylinders and other expansion devices, return springs, and support pins to withstand braking. rotation torque. Each brake drum has a pair of brake shoes, and friction discs are inlaid on the brake shoes. The brake drum is installed on the hub wheel rotation shaft (the output half shaft of the bridge), and is a part that rotates with the wheel. It is made of a certain amount of cast iron and is shaped like a drum. When braking, the wheel cylinder piston or the ca...

Claims

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Application Information

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IPC IPC(8): F16D51/22F16D65/09
Inventor 杨群英
Owner 杨群英
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