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Electric brake device for vehicle

An electric braking and vehicle technology, applied in the direction of electromechanical devices, transmission devices, gear transmission devices, etc., can solve the problems of large-scale gearboxes and increase in the number of components, so as to reduce the number of components, smoothly rotate power transmission, and realize The effect of reducing the number of parts

Inactive Publication Date: 2015-06-24
NISSIN KOGYO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the two-stage planetary gear speed reducer disclosed in Patent Document 1, the internal gear shared by the first and second planetary gear mechanisms is rotatably supported by the gear case, and the gap between the internal gear and the gear case is rotatable. A pair of ball bearings with a relatively large diameter is installed between them, which not only increases the number of parts, but also leads to an increase in the size of the gearbox

Method used

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  • Electric brake device for vehicle
  • Electric brake device for vehicle
  • Electric brake device for vehicle

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0062] refer to Figure 1 to Figure 13 , to describe Embodiment 1 of the present invention, first, in figure 1 Among them, the electric braking device for a vehicle includes: a disc brake 21A; a motor 22A that is freely rotatable in forward and reverse directions mounted on the caliper main body 26 of the disc brake 21A; a speed reducer 23A connected to the motor 22A; The rotational motion output from the speed reducer 23A is converted into axial forward and backward motion by the screw mechanism 24 as a motion conversion mechanism provided between the brake piston 38 of the disc brake 21A and the speed reducer 23A.

[0063] The disc brake 21A is a brake that can obtain a service braking state based on hydraulic pressure, and can obtain a parking braking state by operating an electric motor 22A, and includes: a disc rotor 25A that rotates together with a wheel (not shown); Caliper main body 26 ; a pair of friction pads 27 , 28 arranged to face both sides of the disc rotor 25A...

Embodiment 2

[0127] refer to Figure 14 ~ Figure 18 , Embodiment 2 of the present invention will be described, and parts corresponding to Embodiment 1 will be assigned the same reference numerals and only shown in the drawings, and detailed description will be omitted.

[0128] First, in Figure 14 and Figure 15 Among them, the electric braking device for a vehicle includes: a disc brake 21B; a motor 22B that is rotatable in forward and reverse directions mounted on the caliper main body 26 of the disc brake 21B; a speed reducer 23B connected to the motor 22B; The rotational motion output from the speed reducer 23B is converted into an axial forward and backward motion, and the screw mechanism 24 is provided between the brake piston 38 of the disc brake 21B and the speed reducer 23B.

[0129] The disc brake 21B includes: a disc rotor 25B; and a pair of friction pads 27 and 28 arranged to face both sides of the disc rotor 25B and disposed between the disc rotor 25B and the caliper main b...

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Abstract

Disclosed is an electric brake device for a vehicle, wherein a motion conversion mechanism and a reducer comprised of first and second planetary gear mechanisms are provided between a disk brake and an electric motor. A speed reduction chamber (59) for containing a reducer (23A) is defined between a motor case (83) to which a caliper body (26) is attached and the caliper body (26). A ring gear (64) common to first and second planetary gear mechanisms (61, 62A) is inserted into the speed reduction chamber (59), and is prevented from moving in the axial direction by the motor case (83) and the caliper body (26). The end portion of the ring gear (64), which is opposite to an electric motor (22A), is engaged in the caliper body (26). Thus, the number of components for affixing the ring gear common to the first and second planetary gear mechanisms can be reduced to a great extent, and the ring gear can be easily assembled.

Description

technical field [0001] The present invention relates to an electric brake device for a vehicle, comprising: a disc brake in which a friction pad is opposed to a side surface of a disc rotor; a motion conversion mechanism for advancing and retreating on the disk rotor; and a speed reducer composed of first and second planetary gear mechanisms and provided between the electric motor and the rotating shaft. Background technique [0002] According to Patent Document 1, there is known an electric disc brake for a vehicle in which a two-stage planetary gear type speed reducer is interposed between an electric motor and a screw mechanism connected to a brake piston. In this electric disc brake for a vehicle, a The two-stage planetary gear type reducer in the gear box is composed of a first planetary gear mechanism and a second planetary gear mechanism. The first planetary gear mechanism has a first sun gear provided on the motor shaft and is supported by a A rotatable internal gea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/18F16H1/28F16D65/14F16H57/023
CPCF16D65/18F16D2121/24F16D2125/40F16D2125/50F16H1/46H02K5/04H02K5/10H02K7/116H02K7/14
Inventor 黑木和丰藤井宣辉小池明彦
Owner NISSIN KOGYO CO LTD