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Automatic adjustment device for shoe clearance

A technology of automatic adjustment device and clearance, applied in the direction of slack adjuster, brake type, drum brake, etc., can solve the problems of difficult to assemble support components, foot brakes without brake levers, poor efficiency, etc., and achieve easy automatic assembly. Effect

Inactive Publication Date: 2011-11-30
NISSHINBO BRAKE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, when assembling this drum brake device, there is a problem that it is difficult to automatically assemble the support unit, and the support unit must be assembled by inefficient manual work.
[0010] In addition, since the brake lever must be required in the assembly of the support unit, there is also a problem that it is not applicable to a drum brake device dedicated to a foot brake that does not have a brake lever.

Method used

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  • Automatic adjustment device for shoe clearance
  • Automatic adjustment device for shoe clearance
  • Automatic adjustment device for shoe clearance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Refer to the attached Figure 1 ~ Figure 4 , Embodiment 1 of the present invention will be described.

[0034] (1) The overall structure of the drum brake device

[0035] figure 1 A top view of a leading trailing (LT-shaped) drum brake device with a parking brake mechanism and an incremental shoe clearance automatic adjustment device, figure 2 represents its transverse cross-sectional view, image 3 It shows the top view of the drum brake device before assembly of the support assembly constituting the automatic shoe clearance adjustment device, Figure 4 It is a transverse cross-sectional view showing the drum brake device before the assembly of the support unit is completed.

[0036] exist figure 1 In the drum brake device of the present invention, reference numeral 10 represents the back plate fixed on the non-moving part of the vehicle by bolts etc., and a pair of brake shoes 11,12 are slidable by known shoe holders 13,13. way is supported.

[0037] The cross...

Embodiment 2

[0088] (1) Automatic adjustment device for shoe clearance

[0089] Figure 5 ~ Figure 7Another embodiment is shown. In this embodiment, the front end of the upper jaw 23a at one end of the support assembly 20 is extended to integrally form a hook-shaped middle jaw 23e, and the middle jaw 23e is embedded and engaged with a brake shoe. The rectangular engaging hole 11d in the shoe reinforcement rib 11a of the sheet 11.

[0090] Figure 5 It shows the top view of the leading trailing (LT-shaped) drum brake device with a parking brake mechanism and an incremental automatic adjustment device for shoe clearance, Figure 6 It is a cross-sectional view showing the drum brake device before the assembly of the support unit 20 is completed.

[0091] On the right flat portion of the nut member 23, a first stepped portion 23d is formed inside the upper jaw 23a, and a second stepped portion 23f is formed at the proximal end of the upper jaw 23a.

[0092] The middle jaw 23e is bent at ri...

Embodiment 3

[0121] In Embodiment 1 and Embodiment 2, the form in which the brake lever 30 is overlapped and arranged on the shoe reinforcement rib 11a of one brake shoe 11 is given, but the brake lever 30 can also be overlapped and arranged on the The form on the shoe reinforcing rib 12a of another brake shoe 12.

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Abstract

The invention relates to an automatic adjustment device for shoe gaps. An object of the present invention is to provide a drum brake device in which a support unit can be assembled in a state where a brake shoe is placed on a back plate. A drum brake device, which has an incremental automatic shoe gap adjustment device, the device has the following structure, wherein the support assembly can be moved from the opposite direction to the back plate relative to a pair of brake shoes Assemble.

Description

technical field [0001] The invention relates to an incremental (fine-tuning) shoe clearance automatic adjustment device mounted on a drum brake device. Background technique [0002] Incremental automatic shoe clearance adjustment devices are generally known in which the clearance between the brake shoe and the brake drum (shoe clearance) is caused by wear of the inner lining of the brake shoe. When increasing, the full length of the support assembly is elongated through the cooperation of the support assembly and the driving part, and the shoe gap is automatically adjusted. The support assembly spans between a pair of brake shoes; the drive part and the adjustment tooth Engaged and rotated in a ratchet manner, the adjusting tooth is integrally formed with the supporting component. [0003] The support assembly is composed of a thread engaging body and a fitting part. In the thread fitting body, a bolt part integrally formed with adjustment teeth is screwed with a tubular nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/52
CPCF16D2250/0084F16D51/20F16D65/563
Inventor 藤山正巳
Owner NISSHINBO BRAKE INC
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