KR20150062476A - Valve device for brake - Google Patents

Valve device for brake Download PDF

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Publication number
KR20150062476A
KR20150062476A KR1020130147160A KR20130147160A KR20150062476A KR 20150062476 A KR20150062476 A KR 20150062476A KR 1020130147160 A KR1020130147160 A KR 1020130147160A KR 20130147160 A KR20130147160 A KR 20130147160A KR 20150062476 A KR20150062476 A KR 20150062476A
Authority
KR
South Korea
Prior art keywords
braking
passage
opening
flow path
valve body
Prior art date
Application number
KR1020130147160A
Other languages
Korean (ko)
Inventor
구남중
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020130147160A priority Critical patent/KR20150062476A/en
Publication of KR20150062476A publication Critical patent/KR20150062476A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus

Abstract

The present invention relates to a valve device for a brake, comprising: a housing part having a first flow passage connected to an actuator and a second flow passage connected to a wheel cylinder; a valve body part which is mounted on the housing part and has first and second braking flow passages separately connected to the first flow passage; a first opening and closing part to open and close the first braking flow passage; a second opening and closing part to allow only one-way opening of the second braking flow passage; and a cover part to cover the valve body part. A connection flow passage between the cover part and the valve body part connects the first and second braking flow passages to the second flow passage.

Description

VALVE DEVICE FOR BRAKE -

The present invention relates to a braking valve device, and more particularly, to a braking valve device in which a check valve allowing only unidirectional movement of oil is applied to smoothly raise or maintain the pressure of a wheel.

Generally, an electronic hydraulic braking device adjusts the braking pressure of each wheel by the hydraulic pressure of the master cylinder driven by the motor after the pedal pressure of the driver is sensed through the sensor.

The electronic hydraulic braking device includes a sensor that detects the stroke distance of the pedal so that the braking pressure desired by the driver can be known.

The electronic hydraulic brake system also includes a pedal travel simulator that allows the driver to feel the same pedal pressure as in a conventional hydraulic brake system.

Therefore, when the driver depresses the brake pedal, the electronic control unit senses this and supplies the hydraulic pressure to the master cylinder.

Then, the master cylinder delivers the braking hydraulic pressure to the wheel cylinders of each wheel, and provides the braking force to each wheel.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Application Publication No. 2007-0104982 (published on Oct. 30, 2007, entitled "Valve Control Apparatus for Electronic Hydraulic Brake Device").

Conventionally, the travel path of the braking oil is adjusted through a normal opened valve that is normally opened and forms a flow path, and a normally closed valve that is normally closed.

The normally closed valve is operated in conjunction with the brake pedal to open the flow path, thereby transferring the pressure of the actuator to the wheel.

On the other hand, when the ABS function or the ESC function is implemented during braking of the vehicle, the power of the normally closed valve is shut off to close the flow path. At this time, pressure generated in the actuator is transmitted to the wheel through a separate check valve.

That is, in order to implement the EVIE or ISE, a separate check valve must be used in addition to the normal close valve, which complicates the processing of the pump housing and increases the volume of the pump housing itself.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a braking valve device including a check valve and a normally closed valve.

A braking valve device according to the present invention includes: a housing part having a first flow path connected to an actuator and a second flow path connected to a wheel cylinder; A valve body portion mounted to the housing portion and having a first braking passage and a second braking passage communicated with the first passage; A first opening / closing unit for opening / closing the first braking passage; A second opening / closing unit that allows only the unidirectional opening of the second braking passage; And a cover portion covering the valve body portion, wherein a connection flow path formed between the cover portion and the valve body portion communicates the first braking flow passage and the second braking flow passage with the second flow passage .

Wherein the valve body portion includes: a first body communicating with the first flow path, the first body being opened / closed by the first opening / closing portion; A second body extending in a lateral direction of the first body and being opened only in one direction of the second braking passage by the second opening and closing part; And a body protrusion projecting from the second body and securing a space for the flow of the second opening and closing part inserted into the second braking flow passage.

The braking valve device according to the present invention is further characterized by: a first filter portion disposed between the first flow path and the valve body portion, for filtering foreign matter of the brake fluid.

The braking valve device according to the present invention may further include: a second filter portion surrounding the cover portion and the valve body portion, and filtering the foreign matter of the braking fluid.

The braking valve device according to the present invention is provided with the first braking passage and the second braking passage which are the moving passages of the braking fluid in one valve body portion, so that the number of parts can be reduced and the manufacturing cost can be reduced.

The braking valve device according to the present invention may be a check valve that permits only the unidirectional movement of the braking fluid while the second opening and closing part for opening and closing the second braking passage is moved up and down in accordance with the hydraulic pressure of the braking fluid.

The braking valve device according to the present invention is characterized in that the body protrusion protrudes to the upper side of the second body so that the second opening and closing part rises by the height of the body protrusion to open the second braking passage, Can be prevented.

1 is a view schematically showing a state in which a first braking passage and a second braking passage are closed in a braking valve apparatus according to an embodiment of the present invention.
Fig. 2 is a view schematically showing a state in which the first braking passage is opened in Fig. 1. Fig.
FIG. 3 is a view schematically showing a state in which the second braking passage is opened in FIG. 1;
4 is a schematic view of a valve body in a braking valve apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of a braking valve device according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a state in which a first braking passage and a second braking passage are closed in a braking valve apparatus according to an embodiment of the present invention. Fig. 3 is a view schematically showing the state in which the second braking passage is opened in Fig. 1. Fig.

1 to 3, a braking valve device 1 according to an embodiment of the present invention includes a housing portion 10, a valve body portion 20, a first opening and closing portion 30, An opening / closing part 40, and a cover part 50.

The housing part 10 includes a first flow path 11 connected to the actuator 100 and a second flow path 12 connected to the wheel cylinder 200. The housing portion 10 is formed with a mounting groove portion 13 for mounting the valve body portion 20 therein.

The first flow path 11 is communicated with the lower part of the mounting groove part 13 and the second flow path 12 is formed with the mounting groove part 13 and the mounting groove part 13 is formed in the center part of the housing part 10, As shown in Fig.

That is, although the first flow path 11 and the second flow path 12 are spaced apart from each other, the braking fluid can be moved by being connected through the mounting groove 13.

The valve body portion 20 is mounted on the housing portion 10 and has a first braking flow passage 21 and a second braking flow passage 22 communicating with the first flow passage 11. In one example, the valve body portion 20 is inserted into the mounting groove portion 13.

The first opening and closing part 30 opens and closes the first braking flow path 21. For example, the first opening and closing part 30 is moved up and down by an electromagnet to open and close the first braking flow path 21 of the valve body part 20. [

The first opening and closing part 30 is normally brought into close contact with the valve body part 20 to close the first braking passage 21. When the power is supplied, the first opening and closing part 30 rises to open the first braking passage 21 do.

The second opening and closing part 40 allows only the unidirectional opening of the second braking flow path 22. For example, the second opening and closing part 40 has a spherical shape to close the second braking flow path 22, and is raised by the hydraulic pressure of the second braking flow path 22 to open the second braking flow path 22.

The cover portion (50) covers the valve body portion (20). For example, the cover portion 50 is disposed so as to surround the upper portion of the valve body portion 20, and closes the mounting groove portion 13 to block leakage of the brake fluid.

The cover portion 50 is disposed so as to be spaced apart from the valve body portion 20 and the connecting flow passage 51 formed between the cover portion 50 and the valve body portion 20 is disposed between the first braking flow passage 21 and the second And the braking flow path 22 is communicated with the second flow path 12.

The braking valve device 1 according to an embodiment of the present invention further includes a first filter portion 60 and a second filter portion 70.

The first filter portion 60 is disposed between the first flow path 11 and the valve body portion 20 to filter the foreign matter of the brake fluid.

The first filter portion 60 is inserted into the valve body portion 20 so that the foreign matter of the braking fluid that is moved from the first flow path 11 to the first braking flow path 21 and the second braking flow path 22 .

The second filter unit 70 is disposed so as to surround the cover unit 50 and the valve body unit 20, and filters the foreign matter of the brake fluid.

For example, the second filter portion 70 is disposed between the second flow path 12 and the connection flow path 51 to filter foreign matter from the braking fluid moving from the second flow path 12 to the connection flow path 51 .

In addition, the second filter unit 70 can remove foreign substances from the braking fluid that is moved from the connection passage 51 to the second flow passage 12.

4 is a schematic view of a valve body in a braking valve device according to an embodiment of the present invention.

Referring to FIGS. 1 to 4, a valve body 20 according to an embodiment of the present invention includes a first body 23, a second body 24, and a body protrusion 25.

The first body 23 communicates with the first flow path 11, and the first opening and closing part 30 is disposed above the first body 23.

The second body 24 extends in the lateral direction of the first body 23 and the cover portion 50 is disposed above the second body 24. The second opening and closing portion 40 is inserted into the second body 24 in only one direction of the second braking flow path 22 Is opened.

For example, the first body 23 and the second body 24 are integrally formed, and the first body 23 is disposed at a central portion of the second body 24.

The upper end of the first body 23 is located higher than the upper end of the second body 24 and the first braking passage 21 is formed in the first body 23, 2 braking flow path 22 are formed.

A body trench 28 is formed in the first body 23 and the second body 24 integrally molded and the upper portion of the body trench 28 is connected to the first braking passage 21 and the second braking passage 22, and the lower portion of the body groove portion 28 communicates with the first flow path 11.

The second filter unit 60 is inserted into the body groove 28 to filter out the braking fluid and the second opening and closing part 40 having a spherical shape is inserted into the upper end of the second braking flow path 22, 22).

The body protrusion 25 protrudes upward from the upper side of the second body 24 and secures a space for the flow of the second opening and closing part 40 inserted into the second braking flow passage 22.

That is, the cover portion 50 is seated on the upper side of the body projection 25, and the second opening and closing portion 40 is caught by the cover portion 50 to restrict upward movement. At this time, the second opening and closing part 40 can be raised by the height of the body projection 25. [

The upper end of the second opening and closing part 40 inserted into the second braking passage 22 is located lower than the body protrusion 25 and the pair of body protrusions 25 are disposed in the both side directions of the second opening and closing part 40 do.

The operation and effect of the braking valve device according to an embodiment of the present invention having the above-described structure will now be described.

The valve body portion 20 into which the first filter portion 60 is inserted is inserted into the mounting groove portion 13 of the housing portion 10 and the second opening and closing portion 40 is inserted into the second braking flow passage 22, The second filter portion 70 is disposed outside the valve body portion 20.

The cover portion 50 is seated on the body protrusion 25 and the first opening and closing portion 30 mounted on the housing portion 10 closes the first braking flow passage 21.

The braking fluid supplied from the actuator 100 is moved to the first braking flow passage 21 and the second braking flow passage 22 through the first flow passage 11 and the first filter portion 60 .

At this time, the first opening and closing part 30, to which the power is not applied, keeps the first braking flow path 21 in the closed state, and the second opening and closing part 40 rises by the hydraulic pressure of the braking fluid supplied from the actuator 100 The second braking passage 22 is opened (see Fig. 3).

When the second braking passage 22 is opened, the braking fluid supplied from the actuator 100 flows through the second braking passage 22, the connecting passage 51, the second filter portion 70, 12 in order to reach the wheel cylinder 200.

On the other hand, when power is applied to the first opening and closing part 30 and driving of the actuator 100 is stopped, the first braking passage 21 is opened by driving the first opening and closing part 30, And the second braking passage 22 is closed (see Fig. 2).

The brake fluid supplied from the wheel cylinder 200 flows through the second oil passage 12, the second filter portion 70, the connecting oil passage 51, the first braking oil passage 21, (21) and the first filter unit (60), and reaches the actuator (100).

Since the first braking passage 21 and the second braking passage 22 which are the moving passages of the braking fluid are provided in one valve body 20 in the braking valve apparatus 1 according to the embodiment of the present invention, The number of parts can be reduced and the manufacturing cost can be reduced.

The braking valve device 1 according to the embodiment of the present invention allows the second opening and closing part 40 for opening and closing the second braking passage 22 to move up and down in accordance with the hydraulic pressure of the braking fluid, Which can be a check valve.

The braking valve device 1 according to the embodiment of the present invention is configured such that the body protrusion 25 protrudes to the upper side of the second body 24 so that the second opening and closing part 40 is raised by the height of the body protrusion 25 The second braking flow passage 22 is opened but can be prevented from being detached from the second braking flow passage 22 by being caught by the cover portion 50. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

10: housing part 11: first flow path
12: second flow path 13: mounting groove
20: valve body portion 21: first braking oil passage
22: second brake flow path 23: first body
24: second body 25: body protrusion
28: body groove portion 30: first opening /
40: second opening and closing part 50:
51: connecting channel 60: first filter portion
70: second filter unit 100: actuator
200: Wheel cylinder

Claims (4)

A housing having a first flow path connected to the actuator and a second flow path connected to the wheel cylinder;
A valve body portion mounted to the housing portion and having a first braking passage and a second braking passage communicated with the first passage;
A first opening / closing unit for opening / closing the first braking passage;
A second opening / closing unit that allows only the unidirectional opening of the second braking passage; And
And a cover portion covering the valve body portion,
And a connecting flow path formed between the cover portion and the valve body portion makes the first braking flow passage and the second braking flow passage communicate with the second flow passage.
The valve according to claim 1, wherein the valve body portion
A first body communicating with the first flow path and having the first braking flow path opened and closed by the first opening and closing part;
A second body extending in a lateral direction of the first body and being opened only in one direction of the second braking passage by the second opening and closing part; And
And a body protrusion protruding from the second body and securing a space for the flow of the second opening / closing part inserted into the second braking flow passage.
The method according to claim 1,
Further comprising a first filter portion disposed between the first flow path and the valve body portion and configured to filter out foreign substances from the brake fluid.
The method according to claim 1,
Further comprising a second filter portion surrounding the cover portion and the valve body portion to filter foreign matters of the brake fluid.
KR1020130147160A 2013-11-29 2013-11-29 Valve device for brake KR20150062476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130147160A KR20150062476A (en) 2013-11-29 2013-11-29 Valve device for brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130147160A KR20150062476A (en) 2013-11-29 2013-11-29 Valve device for brake

Publications (1)

Publication Number Publication Date
KR20150062476A true KR20150062476A (en) 2015-06-08

Family

ID=53500486

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130147160A KR20150062476A (en) 2013-11-29 2013-11-29 Valve device for brake

Country Status (1)

Country Link
KR (1) KR20150062476A (en)

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