CN-116767162-B - Brake driving device

Abstract

The present invention relates to a brake driving apparatus including a hydraulic valve block formed with a discharge flow passage for discharging air to the outside, an electronic control device supported at one side of the hydraulic valve block and including an electric device housing formed therein with a vent hole opened toward the discharge flow passage direction of the hydraulic valve block and connected to an inner space, and a filter attached to the electric device housing to shield the vent hole in such a manner that air can circulate, and a discharge port sealing member for sealing a space between the hydraulic valve block and the electronic control device and surrounding the discharge flow passage, the vent hole, and the filter.

Inventors

• LI ZHONGZAI
• YANG ERZHEN
• JIN XIJUN
• LI CANXI

Assignees

• 汉拿万都株式会社

Dates

Publication Date

20260512

Application Date

20230315

Priority Date

20220315

Claims (6)

1. 1. A brake driving device, comprising: A hydraulic valve block formed with a discharge flow path for discharging air to the outside; An electronic control device supported on one side of the hydraulic valve block and including an electric equipment housing in which a vent hole opening toward the discharge flow passage direction of the hydraulic valve block and connected to an internal space is formed, and a filter attached to the electric equipment housing and entirely covering the vent hole and having air permeability, and A drain port sealing member for sealing a space between the hydraulic valve block and the electronic control device and surrounding the drain flow passage, the vent hole, and the filter, Wherein, the air discharged through the vent hole of the electrical equipment housing flows to the discharge flow passage of the hydraulic valve block through the filter.
2. 2. The brake actuating apparatus according to claim 1, wherein, The brake driving device further includes a main sealing member that seals a space between the hydraulic valve block and the electronic control device, and is formed along an edge of a face of the electrical equipment housing facing the hydraulic valve block.
3. 3. The brake actuating apparatus according to claim 1, wherein, The hydraulic valve block is provided at its inside with a valve for controlling the flow of brake oil, The electronic control device further includes a printed circuit board that is accommodated in the inner space of the electrical equipment housing and generates an electrical signal for controlling the valve of the hydraulic valve block.
4. 4. A brake actuating apparatus according to claim 3, wherein, The brake driving device further includes a motor supported at the other side of the hydraulic valve block and controlled by the electronic control device.
5. 5. The brake actuating apparatus according to claim 1, wherein, The filter comprises a membrane filter.
6. 6. The brake actuating apparatus according to claim 2, wherein, The drain sealing member and the main sealing member are made of a cured in place gasket, CIPG.

Description

Brake driving device Technical Field The present invention relates to a brake driving device, and more particularly, to a brake driving device that can prevent an internal pressure from varying due to a temperature variation of one or more of an electronic control device and a motor. Background In general, a brake driving device provides braking force to a brake according to a stepping force of a pedal of the brake by a driver of a vehicle. Further, the brake reduces the rotational speed of the wheels according to the received braking force to reduce the speed of the vehicle, thereby realizing braking of the vehicle. The magnitude of this braking force is changed according to the pedal input force by switching and position change of the plurality of solenoid valves under the hydraulic pressure. In addition, in a brake driving device that is required to be compact in size due to a limited installation space, the internal pressure is also liable to rise due to a rise in temperature at the time of operation of a motor for generating braking force. Also, when the internal pressure excessively increases, damage to the motor or oil leakage may be caused. In addition, in the electronic control device for controlling the driving motor, the internal pressure may be easily increased due to heat generation of the printed circuit board, and when the internal pressure is excessively increased, the electronic control device may be damaged. As described above, when the temperature change of the motor and the electronic control device, which are main components of the brake driving device, causes an increase in internal pressure, there is a problem in that the overall life of the brake driving device is reduced and the replacement cycle of the components is shortened. Disclosure of Invention First, the technical problem to be solved Embodiments of the present invention provide a brake driving device that can stably maintain the balance of internal pressure. (II) technical scheme According to an embodiment of the present invention, a brake driving apparatus includes a hydraulic valve block formed with a discharge flow passage for discharging air to the outside, an electronic control device supported at one side of the hydraulic valve block and including an electric device housing in which a vent hole opened toward the discharge flow passage direction of the hydraulic valve block and connected to an inner space is formed, and a filter attached to the electric device housing so as to shield the vent hole in a manner allowing air to circulate, and a discharge port sealing member for sealing a space between the hydraulic valve block and the electronic control device and surrounding the discharge flow passage, the vent hole, and the filter. The brake driving apparatus may further include a main sealing member sealing a space between the hydraulic valve block and the electronic control apparatus, and formed along an edge of a face of the electric device housing facing the hydraulic valve block. The hydraulic valve block may be provided at the inside thereof with a valve for controlling the flow of brake oil, The electronic control apparatus may further include a printed circuit board which is accommodated in the inner space of the electric device case and generates an electric signal for controlling the valve of the hydraulic valve block. The brake driving device may further include a motor supported at the other side of the hydraulic valve block and controlled by the electronic control device. The filter may comprise a membrane filter. The drain sealing member and the main sealing member may be made of a Cured-in-place gasket (cure IN PLACE GASKETS, GIPG). (III) beneficial effects According to the embodiment of the invention, the brake driving device can stably maintain the balance of the internal pressure. Drawings Fig. 1 is a perspective view of a brake driving apparatus according to an embodiment of the present invention. Fig. 2 is a partially enlarged perspective view of fig. 1. Fig. 3 is a partially enlarged perspective view showing a portion denoted by F3 in fig. 2 in an enlarged manner. Fig. 4 is a partially cutaway perspective view of a portion of fig. 3 cut away. Fig. 5 is a cross-sectional view showing a portion of the electronic control device of fig. 2 supported by a hydraulic valve block. Reference numerals and signs 101 Brake driving device 110, electronic control device 120 Hydraulic valve block 129 drain flow path 130 Motor 150 mounting bracket 160 Input rod 300 electrical equipment shell 340, Vent 400, filter 830 Main seal 840 drain seal Detailed Description Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily implement the present invention. The invention may be embodied in a variety of different forms and is not limited to the embodiments described herein. The