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Brake caliper for disk brake

A technology of disc brakes and chucks, applied in the direction of brake components, brake types, brake actuators, etc., can solve problems such as uneven wear of brake pads 10, and achieve the purpose of avoiding quality and/or cost increases and eliminating brake pads. The effect of dynamic howling and excellent braking force

Inactive Publication Date: 2009-09-09
株式会社努卡贝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This condition causes bending of the backing plate 104 and contributes to uneven wear of the brake pad 10
Furthermore, free vibrations in areas where the piston 6 cannot sufficiently press down become a factor of brake squealing

Method used

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  • Brake caliper for disk brake
  • Brake caliper for disk brake
  • Brake caliper for disk brake

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0117] Here, based on figure 1 with 2 Explanation According to the first embodiment of the present invention, where reference numerals are shared in the present invention and the conventional technology, the same reference numerals are used for Figures 13 to 15 Those parts in the same as conventional technology.

[0118] figure 1 with 2 The overall structure of the brake chuck 2 in Figures 13 to 15 The assembly structure of the brake chuck 2 in is basically the same. The brake chuck 2 is configured to clamp the disc rotor 1 with the outer part 3 and the inner part 4; .

[0119] Such as figure 1 As shown, the outer part 3 includes: an outer chuck main body 100; a hole 21 for placing a piston (brake piston) 23 so that the piston 23 can be guided in the hole 21 and slide along the axis of the hole 21; thus, A hydraulic chamber 25 is defined (provided) between the bottom wall of the hole 21 and the top (top) wall of the piston 23 so that hydraulic oil (brake fluid) pres...

no. 2 example

[0137] Here, based on Figures 3 to 6 A second embodiment of the present invention is explained.

[0138] In the first embodiment, the square seal 31 is provided as an outer seal (piston outer seal) between the outer diameter peripheral wall of the hole 21 and the outer peripheral wall of the piston 23, however, in the second embodiment, A square seal 36 is additionally provided as an inner seal between the outer diameter peripheral walls of the bore 21 (piston inner seal).

[0139] From a functional point of view, by providing a groove for the square seal 36 on the side of the piston 23, the square seal 36 is not arranged on the side of the central protrusion 22 but on the side of the piston 23, there is no questionable.

[0140] like image 3 As shown, the piston 23 contacts the quad seal 31 on the outer peripheral wall of the piston 23 and contacts the quad seal 36 on the inner peripheral wall of the piston 23 . Figure 4 It is shown by way of example how the square sea...

no. 3 example

[0149] Here, based on Figure 7 A third embodiment of the present invention is explained. This embodiment involves determining and designing the clearance between the piston 23 and the hole 21 in which the piston 23 is seated.

[0150] Figure 7 The arrangement of the piston 23 and the hole 21 is shown in detail; 1 and take the gap δ between the piston 23 and the center protrusion 22 2 placed in the hole 21; in this embodiment, it can basically be considered that the gap δ 1 not equal to gap δ 2 . In other words, different clearances are applied to the outer and inner clearances of the ring-shaped piston in order to design the brake chuck 2 .

[0151] like Figure 7 As shown, when brake fluid pressure is applied in the hydraulic chamber 25 of the chuck main body 100 or 105 , the piston 23 strongly presses the disc rotor 1 via the brake pad 10 .

[0152] On the other hand, since the disk rotor is perpendicular to the Figure 7 direction of the paper, so the brake pads ...

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PUM

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Abstract

A brake caliper that has the same performance as a brake caliper with multiple pistons despite its compact structure, in which drag resistance between a brake pad and a brake disk is minimized, that is less likely to produce non-uniform wear of brake pad and brake squealing, and whose weight and cost are suppressed. Pistons (23) are formed in a circular hollow cylindrical shape, and apply pressing force to a disk rotor (1) by circular pressing parts. Piston-containing holes (21) recessed in a circular shape and containing the pistons (23) so that they can slide in the axial direction of the pistons are formed in caliper bodies (100, 105).

Description

technical field [0001] The present invention relates to a brake chuck for a disc brake, which is used in a vehicle such as a motor vehicle or a motorcycle. Background technique [0002] There are currently two types of brake chucks; the first type has at least one piston on only one side of the brake disc (the disc to be braked), while the second type has a There is at least one piston on each side of the brake disc; in the case of the second type, the pistons on one side and the piston on the other side face each other across the brake disc. Many high-performance cars use a second type of disc brake; some racing or road cars (either type is typical for high-performance cars) have three or more disc brakes on each side of the brake disc. The brake chuck for the pistons, thus a total of six or more pistons. [0003] An example construction of a conventional brake chuck is shown in Figures 13 to 15 . [0004] Figure 13 A perspective view showing the approximate assembly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/20F16D65/18
Inventor 栗田省三
Owner 株式会社努卡贝
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