Inspection valve

Patent metadata

Field	Value
Publication number	US-10144401-B2
Application number	US-201715600650-A
Country	US
Kind code	B2
Filing date	May 19, 2017
Priority date	May 20, 2016
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

According to the embodiment of the present disclosure, it provides an inspection valve installed at a flow path connecting a reservoir to a chamber of a master cylinder, comprising: a housing at which a bore is formed and having one side at which an inlet hole is formed; a plunger provided to be movable along the bore of the housing; a seat member configured to close one side of the bore and through which an outlet hole passes; and an elastic member having one side supported by the plunger and the other side supported by the seat member, wherein the plunger is provided to block the outlet hole when a hydraulic pressure flowing in through the inlet hole is greater than an elastic force of the elastic member.
Also, according to the embodiment of the present disclosure, it provides an inspection valve installed at a bypass flow path connecting a front side of a check valve to a rear side thereof at a reservoir flow path connecting a reservoir to a master cylinder, comprising: a housing at which a bore is formed and having one side at which an inlet hole communicating with the master cylinder is formed; a plunger provided to be movable along the bore of the housing; a seat member configured to close one side of the bore and through which an outlet hole communicating with the reservoir passes; and an elastic member having one side supported by the plunger and the other side supported by the seat member, wherein the check valve is provided at the reservoir flow path and enables fluid to flow in a direction from the reservoir to the master cylinder, and the plunger is provided to block the outlet hole when a hydraulic pressure flowing in through the inlet hole is greater than an elastic force of the elastic member.

First claim

What is claimed is:

1. An inspection valve installed at a flow path connecting a reservoir to a chamber of a master cylinder, comprising:
a housing at which a bore is formed and having one side at which an inlet hole is formed;
a plunger provided to be movable along the bore of the housing;
a seat member configured to close one side of the bore and through which an outlet hole passes; and
an elastic member having one side supported by the plunger and the other side supported by the seat member,
wherein the plunger comprises a slit provided at an outer surface of the plunger in a length direction of the bore so that oil flowing in through the inlet hole flows toward an opposite side of the plunger along the slit.

2. The inspection valve of claim 1 , wherein the bore includes a first bore adjacent to the inlet hole, and a second bore at which the seat member comprising the outlet hole is disposed, the second bore of the housing having an inner diameter that is greater than an inner diameter of the first bore of the housing.

3. The inspection valve of claim 1 , wherein an opening and closing member protrudes from one side of the plunger, and
the plunger is provided to be moved by the hydraulic pressure, thereby enabling the opening and closing member to block the outlet hole.

4. The inspection valve of claim 3 , wherein the seat member includes a seating part that is provided to extend from one side of the outlet hole, and
the opening and closing member is seated at the seating part to block the outlet hole.

5. The inspection valve of claim 1 , wherein the inlet hole communicates with the chamber of the master cylinder, and the outlet hole communicates with the reservoir.

6. The inspection valve of claim 1 , wherein the plunger is provided to block the outlet hole when a hydraulic pressure flowing in through the inlet hole is greater than an elastic force of the elastic member.

7. The inspection valve of claim 1 , wherein an inclined part is formed at an edge of the seat member along a circumference of the seat member.

8. An inspection valve installed at a bypass flow path connecting a front side of a check valve to a rear side thereof at a reservoir flow path connecting a reservoir to a master cylinder, comprising:
a housing at which a bore is formed and having one side at which an inlet hole communicating with the master cylinder is formed;
a plunger provided to be movable along the bore of the housing;
a seat member configured to close one side of the bore and through which an outlet hole communicating with the reservoir passes; and
an elastic member having one side supported by the plunger and the other side supported by the seat member,
wherein the check valve is provided at the reservoir flow path and enables fluid to flow in a direction from the reservoir to the master cylinder, and
wherein the plunger comprises a slit provided at an outer surface of the plunger in a length direction of the bore so that oil flowing in through the inlet hole flows toward an opposite side of the plunger along the slit.

9. The inspection valve of claim 8 , wherein an opening and closing member protrudes from one side of the plunger, and
the plunger is provided to be moved by the hydraulic pressure, thereby enabling the opening and closing member to block the outlet hole.

10. The inspection valve of claim 9 , wherein the seat member includes a seating part that is provided to extend from one side of the outlet hole, and
the opening and closing member is seated at the seating part to block the outlet hole.

11. The inspection valve of claim 8 , wherein the slit of the plunger is formed from one end and to an other end of the plunger.

12. The inspection valve of claim 8 , the plunger is provided to block the outlet hole when a hydraulic pressure flowing in through the inlet hole is greater than an elastic force of the elastic member.

13. The inspection valve of claim 8 , wherein the slit of the plunger is formed from one end and to an other end of the plunger.

14. The inspection valve of claim 8 , wherein an inclined part is formed at an edge of the seat member along a circumference of the seat member.

15. The inspection valve of claim 8 , wherein the bore of the housing comprises a first bore adjacent to the inlet hole and a second bore at which the seat member comprising the outlet hole is disposed, the second bore of the housing having an inner diameter which is greater than an inner diameter of the first bore of the housing.

Assignees

• Mando Corp

Inventors

• Choi Seong-Ho
• Jeon In-Wook

Classifications

• B60T13/686

  in hydraulic systems or parts thereof · CPC title

• B60T13/66 Primary

  Electrical control in fluid-pressure brake systems · CPC title

• B60T8/341 Primary

  Systems characterised by their valves (B60T8/36, B60T8/38 take precedence) · CPC title

• B60T8/5031

  open systems · CPC title

• B60T8/5025

  in hydraulic brake systems · CPC title