WO2022145714A1

WO2022145714A1 - Vent cap

Info

Publication number: WO2022145714A1
Application number: PCT/KR2021/016667
Authority: WO
Inventors: 이석진; 김은지; 김희천; 김규범
Original assignee: 일진하이솔루스 주식회사
Priority date: 2020-12-28
Filing date: 2021-11-15
Publication date: 2022-07-07
Also published as: KR102495091B1; KR20220093705A

Abstract

A vent cap according to the present invention comprises: an inner cap portion that is installed at a vent portion for discharging gas and guides gas discharged from the vent portion to be discharged in one direction; an outer cap portion that is mounted on the inner cap portion while surrounding the outside of the inner cap portion and allows the gas guided by the inner cap portion to be discharged to the outside; and a connection portion that connects the outer cap portion and the vent portion.

Description

vent cap

The present invention relates to a vent cap, and more particularly, to a vent cap for discharging gas discharged from a vent unit to the outside.

This application claims priority from Korean Patent Application No. 10-2020-0184709, which is incorporated herein by reference.

In general, a fuel tank for a vehicle is equipped with a rubber stopper for preventing the inflow of moisture from the outside. In addition, a vent hole for discharging hydrogen gas passing through the inside of the pipe is formed in the fuel tank.

In the prior art, the vent cap may have a vent hole exposed to the outside so that moisture may be introduced, or moisture may be introduced into the vent cap due to a water film phenomenon. Separate parts are required to prevent moisture from entering. In addition, there is a problem in that the rubber stopper made of a rubber material loses the moisture barrier function due to hardening when used for a long time. Therefore, there is a need to improve it.

The background technology of the present invention is disclosed in Republic of Korea Utility Model Registration No. 20-0463591 (registered on November 7, 2012, title of design: leak prevention cap for air vent).

The present invention was created to improve the above problems, and an object of the present invention is to provide a vent cap capable of discharging a gas discharged from a vent part to the outside and blocking the inflow of moisture.

The vent cap according to the present invention includes: an inner cap part mounted on a vent part for discharging gas, and guiding the gas discharged from the vent part to be discharged in one direction; an outer cap part mounted on the inner cap part while enclosing the outer surface of the inner cap part, and configured to discharge the gas guided through the inner cap part to the outside; and a connection part connecting the outer cap part and the vent part.

In the present invention, the inner cap portion, the inner cap body portion mounted on the vent portion; a discharge hole formed to be opened in the inner cap body portion, and for guiding the gas discharged from the vent portion to be discharged to the outer cap portion; and a round portion formed to be rounded at the corner of the inner cap body portion to cushion a collision when inserted into the inner surface of the outer cap portion.

In the present invention, the discharge hole portion is opened to the inner cap body portion, the discharge projection hole formed to protrude to a set length in the inner cap body portion; and an exhaust guide part communicating with the discharge protrusion hole part and having a narrow width from the vent part toward the discharge protrusion hole part side.

In the present invention, the outer cap portion, the outer cap body portion is mounted on the inner cap body portion while surrounding the outer surface of the inner cap body portion; an insertion guide portion formed in a plurality of the outer cap body portion along the circumferential direction of the outer cap body portion and guiding the insertion of the inner cap body portion; and a gas discharge unit formed to be opened between the plurality of insertion guide units and configured to discharge gas to the outside.

In the present invention, the outer cap body portion, the outer cap housing is mounted on the inner cap body portion while surrounding the outer surface of the inner cap body portion; and a guide groove formed concavely on the inner surface of the outer cap housing to guide the gas discharged from the discharge hole to the gas discharge unit.

In the present invention, the outer cap body portion further includes a water discharge hole formed through the upper surface of the outer cap housing to allow the moisture remaining in the outer cap housing to be discharged to the outside.

In the present invention, the outer cap portion, the outer cap body portion has a groove formed along the circumferential direction of the outer cap body portion, further comprises a connection mounting groove portion to which the connection portion is mounted.

In the present invention, the connecting portion may include a first connecting ring portion mounted to the outer cap portion; a second connection ring part surrounding the outer surface of the vent part; a connecting member connecting the first connecting ring portion and the second connecting ring portion; a first tightening part movably mounted on the connection member and moving toward the first connection ring part to tighten the first connection ring part; and a second tightening part that is movably mounted on the connection member and moves toward the second connection ring part to tighten the second connection ring part.

In the present invention, the connecting member is made of an elastically deformable material.

According to the vent cap according to the present invention, it is possible to block the inflow of moisture or foreign substances from the outside through the double structure of the outer cap and inner cap.

In addition, according to the present invention, by guiding the gas discharged from the vent unit to flow to the inner cap unit and the outer cap unit to facilitate the discharge of the gas, the internal pressure of the device in which the vent unit is installed can be maintained constant.

In addition, according to the present invention, it is possible to easily discharge the moisture introduced from the outside through the moisture discharge hole of the outer cap.

In addition, according to the present invention, it is possible to prevent the loss of the outer cap by connecting the outer cap and the vent by the connecting portion.

1 is an assembled perspective view schematically showing a vent cap schematically showing a vent cap according to an embodiment of the present invention.

Figure 2 is a perspective view schematically showing a vent cap schematically showing a vent cap according to an embodiment of the present invention.

Figure 3 is an assembly cross-sectional view schematically showing the inner cap portion and the outer cap portion according to an embodiment of the present invention.

4 is a cross-sectional view schematically showing an inner cap portion and an outer cap portion according to an embodiment of the present invention.

5 is a plan view schematically showing an inner upper surface of the outer cap according to an embodiment of the present invention.

6 is a cross-sectional view schematically taken along line A-A of FIG. 5 .

7 is a front view schematically showing a state in which the connection part is mounted on the outer cap part according to an embodiment of the present invention.

Hereinafter, one embodiment of a vent cap according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is an assembled perspective view schematically showing a vent cap schematically showing a vent cap according to an embodiment of the present invention, and FIG. 2 is a schematic representation of a vent cap schematically showing a vent cap according to an embodiment of the present invention 3 is a cross-sectional view schematically showing an inner cap and an outer cap according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view schematically showing an inner cap and an outer cap according to an embodiment of the present invention, Figure 5 is a plan view schematically showing the inner upper side portion of the outer cap according to an embodiment of the present invention, Figure 6 is a cross-sectional view schematically showing A-A of Figure 5, Figure 7 is a connection part according to an embodiment of the present invention It is a front view schematically showing the state mounted on the outer cap.

1 to 7 , the vent cap according to an embodiment of the present invention includes an inner cap part 200 , an outer cap part 300 , and a connection part 400 . The inner cap unit 200 is mounted on the vent unit 100 for discharging gas, and guides the gas discharged from the vent unit 100 to be discharged in one direction (left direction based on FIG. 1 ). The vent unit 100 discharges gas, and is mounted on a fuel tank (not shown) or the like. The fuel tank stores gas such as hydrogen gas. When the gas stored in the fuel tank reaches a pressure higher than the set pressure, it is discharged to the outside through the vent unit 100 . Gas is discharged through the vent unit 100 to maintain a constant pressure inside the fuel tank.

The inner cap portion 200 includes an inner cap body portion 210 , a discharge hole portion 220 , and a round portion 230 . The inner cap body part 210 is to be mounted on the vent part 100 , and blocks the inflow of moisture or foreign substances into the vent part 100 . The inner cap body 210 is formed in a hollow cylindrical shape with one side (the right side of FIG. 1 reference) opened.

The discharge hole 220 is formed to be opened in the inner cap body 210 , and guides the gas discharged from the vent 100 to be discharged to the outer cap 300 . The discharge hole 220 includes a discharge protrusion hole 221 and a discharge guide unit 223 .

The discharge protrusion hole 221 is opened to the inner cap body 210 and is formed to protrude from the inner cap body 210 by a set length. The gas introduced into the inner cap body 210 from the vent 100 through the discharge protrusion hole 221 is guided to flow to the outer cap body 310 of the outer cap 300 .

The discharge guide part 223 communicates with the discharge protrusion hole 221 and is formed to have a narrow width from the vent part 100 toward the discharge protrusion hole 221 side. That is, the gas introduced into the inner cap body 210 from the vent unit 100 is collected at the discharge guide unit 223 and guides to flow to the outer cap body unit 310 through the discharge protrusion hole unit 221 . The inclination angle at which the discharge guide part 223 gathers into the discharge protrusion hole part 221 is set to 90°. The inclination angle of the discharge guide part 223 is set to 90°, so that an optimal amount of gas can be collected and discharged through the discharge protrusion hole part 221 .

The round portion 230 is formed to be rounded at the corner of the inner cap body 210 , and cushions a collision when inserted into the inner surface of the outer cap portion 300 . The round portion 230 is formed to be rounded at the corner of the inner cap body 210, and is inserted into the inner surface of the outer cap body 310 of the outer cap 300 while being inserted into the inner surface of the outer cap body 310. Collision with the side can be cushioned.

The outer cap part 300 is mounted on the inner cap part 200 while surrounding the outer surface of the inner cap part 200 , and causes the gas guided through the inner cap part 200 to be discharged to the outside. The outer cap unit 300 may block the inflow of moisture or foreign substances into the vent unit 100 together with the inner cap unit 200 .

The outer cap portion 300 includes an outer cap body portion 310 , an insertion guide portion 320 , and a gas discharge portion 330 . The outer cap body 310 is mounted on the inner cap body 210 while surrounding the outer surface of the inner cap body 210 . The outer cap body part 310 blocks the inflow of moisture or foreign substances into the vent part 100 together with the inner cap body part 210 . The outer cap body 310 is formed in a hollow cylindrical shape with one side (the right side of FIG. 1 reference) opened.

The outer cap body 310 includes an outer cap housing 311 and a guide groove 313 . The outer cap housing 311 is mounted on the inner cap body 210 while surrounding the outer surface of the inner cap body 210 . The outer cap housing 311 is formed in a hollow cylindrical shape with one side (the right side of FIG. 1 reference) opened. The inner diameter of the outer cap housing 311 is formed to be greater than or equal to the outer diameter of the inner cap body 210 .

5 and 6 , an upper guide part 317 is formed inside the upper part of the outer cap housing 311 . The upper guide part 317 is formed to be inclined downward from the upper part of the outer cap housing 311 toward the side, and the gas is guided to flow from the upper part of the outer cap housing 311 to the side by the upper guide part 317 .

The guide grooves 313 are respectively concavely formed on the inner surfaces of the upper and side surfaces of the outer cap housing 311 , and guide the gas discharged from the discharge hole 220 to the gas discharge unit 330 . The guide groove part 313 is formed to communicate with the gas discharge part 330 . Therefore, the gas introduced into the inner space of the outer cap housing 311 from the inner cap 200 is from the guide groove 313 on the upper portion of the outer cap housing 311 to the guide groove 313 on the side of the outer cap housing 311. The flow is guided and discharged to the outside through the gas discharge unit 330 .

The outer cap body 310 further includes a water discharge hole 315 . The water discharge hole 315 is formed through the upper surface of the outer cap housing 311 to enable the moisture remaining in the outer cap housing 311 to be discharged to the outside.

The water discharge hole part 315 is closed by the first connection ring part 410 of the connection part 400, and the inflow of moisture or foreign substances from the outside is blocked. When the first connection ring part 410 is released, the moisture remaining in the outer cap housing 311 may be discharged to the outside through the moisture discharge hole part 315 .

A plurality of insertion guide portions 320 are formed in the outer cap body 310 along the circumferential direction of the outer cap body 310 , and guide the insertion of the inner cap body 210 . The insertion guide unit 320 has an inner surface inclined in the insertion direction of the inner cap body 210 (left direction based on FIG. 1 ) to guide the insertion of the inner cap body 210 .

The gas discharge part 330 is formed to be opened between the plurality of insertion guide parts 320 in the outer cap body part 310, and allows the gas to be discharged to the outside. The gas discharge unit 330 is formed in a hemispherical shape on the outer cap body 310 .

The outer cap part 300 further includes a connection mounting groove part 340 . The connection mounting groove portion 340 has a groove formed in the outer cap body portion 310 along the circumferential direction of the outer cap body portion 310, the connection portion 400 is mounted, the connection portion 400 to the connection mounting groove portion 340 ) of the first connecting ring portion 410 is mounted.

The connection part 400 connects the outer cap part 300 and the vent part 100 . It is possible to prevent separation or loss of the outer cap part 300 by the connection part 400 . The connecting portion 400 includes a first connecting ring portion 410 , a second connecting ring portion 420 , a connecting member 430 , a first tightening portion 440 , and a second tightening portion 450 .

The first connection ring portion 410 is to be mounted on the connection mounting groove portion 340 of the outer cap portion 300, one side (the right side of FIG. 7) is formed in an open annular shape. The first connection ring part 410 is mounted on the connection mounting groove part 340 of the outer cap part 300 , and separation from the connection mounting groove part 340 is prevented by tightening the first tightening part 440 .

The second connecting ring portion 420 is mounted on the inner cap body portion 210 of the vent portion 100 or the inner cap portion 200, and is formed in an open annular shape with one side (the right side of FIG. 7 ) open. The second connection ring part 420 is mounted on the inner cap body part 210 of the vent part 100 or the inner cap part 200, and the vent part 100 or the inside by tightening the second tightening part 450. Separation from the inner cap body 210 of the cap 200 is prevented.

The connecting member 430 connects the first connecting ring portion 410 and the second connecting ring portion 420 . The connecting member 430 may be made of an elastically deformable material, and may maintain a connection state between the first connecting ring part 410 and the second connecting ring part 420 while being elastically deformed in the gas discharge or the like.

The first tightening part 440 is slidably mounted on the connection member 430 and is formed in a hollow shape. The first tightening portion 440 is moved toward the first connection ring portion 410 to tighten the open annular first connection ring portion 410 . The first tightening portion 440 is moved to the other side (the right side of FIG. 7 ) to release the tightening of the first connecting ring portion 410 .

The second tightening part 450 is slidably mounted on the connection member 430 and is formed in a hollow shape. The second tightening portion 450 is moved toward the second connection ring portion 420 to tighten the open annular second connection ring portion 420 . The second tightening part 450 is moved to the other side (the right side of FIG. 7 ) to release the tightening of the second connecting ring part 420 .

The operation of the vent cap according to an embodiment of the present invention configured as described above will be described.

A gas having a pressure higher than a preset pressure in the fuel tank is discharged through the vent unit 100 . The gas discharged through the vent unit 100 flows into the inner cap body 210 of the inner cap 200 . The gas introduced into the inner cap body 210 flows along the discharge guide 223 and flows into the outer cap 300 through the discharge protrusion hole 221 .

The gas introduced into the outer cap part 300 flows in the outer cap housing 311 , and the flow is guided along the guide groove part 313 . The gas flowing along the guide groove 313 is discharged to the outside through the gas discharge unit 330 . Accordingly, the fuel tank in which the vent unit 100 is mounted can be prevented from being damaged by maintaining a constant pressure state.

On the other hand, when moisture remains in the outer cap part 300, the first connection ring part 410 of the connection part 400 is released from the connection mounting groove part 340, and moisture can be discharged through the moisture discharge hole part 315. .

According to the vent cap according to the present invention, it is possible to block the inflow of moisture or foreign substances from the outside through the outer cap part 300 and the inner cap part 200 having a double structure.

In addition, according to the present invention, by guiding the gas discharged from the vent unit 100 to flow to the inner cap unit 200 and the outer cap unit 300 to facilitate the discharge of the gas, the vent unit 100 is installed in a fuel tank, etc. It is possible to keep the internal pressure of the device constant.

In addition, according to the present invention, the moisture introduced from the outside through the moisture discharge hole 315 of the outer cap part 300 can be easily discharged to the outside.

In addition, according to the present invention, it is possible to prevent the loss of the outer cap portion 300 by connecting the outer cap portion 300 and the vent portion 100 by the connection portion 400 .

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible by those skilled in the art to which the art pertains. will understand Therefore, the true technical protection scope of the present invention should be defined by the claims below.

Claims

an inner cap part mounted on the vent part for discharging gas and guiding the gas discharged from the vent part to be discharged in one direction;

an outer cap part mounted on the inner cap part while enclosing the outer surface of the inner cap part, and configured to discharge the gas guided through the inner cap part to the outside; and

Vent cap, characterized in that it comprises a connecting portion for connecting the outer cap portion and the vent portion.
According to claim 1,

The inner cap portion,

an inner cap body part mounted to the vent part;

a discharge hole formed to be opened in the inner cap body portion and for guiding the gas discharged from the vent portion to be discharged to the outer cap portion; and

The vent cap is formed to be rounded at the corner of the inner cap body, and includes a round portion that cushions a collision when inserted into the inner surface of the outer cap.
3. The method of claim 2,

The discharge hole portion,

a discharge protrusion hole which is opened to the inner cap body and is formed to protrude to a set length in the inner cap body; and

and a discharge guide portion communicating with the discharge protrusion hole portion and having a narrow width from the vent portion toward the discharge projecting hole portion.
3. The method of claim 2,

The outer cap portion,

an outer cap body mounted to the inner cap body while enclosing an outer surface of the inner cap body;

an insertion guide portion formed in a plurality of the outer cap body portion along the circumferential direction of the outer cap body portion and guiding the insertion of the inner cap body portion; and

A vent cap, which is formed to be opened between the plurality of insertion guide parts, and comprises a gas discharge part for discharging gas to the outside.
5. The method of claim 4,

The outer cap body portion,

an outer cap housing mounted to the inner cap body while enclosing an outer surface of the inner cap body; and

and a guide groove formed concavely on the inner surface of the outer cap housing to guide the gas discharged from the discharge hole to the gas discharge unit.
6. The method of claim 5,

The outer cap body portion,

Vent cap, characterized in that it further comprises a water discharge hole formed through the upper surface of the outer cap housing to allow the moisture remaining in the outer cap housing to be discharged to the outside.
5. The method of claim 4,

The outer cap portion,

A groove is formed in the outer cap body in a circumferential direction of the outer cap body, and the vent cap, characterized in that it further comprises a connection mounting groove portion to which the connection portion is mounted.
According to claim 1,

The connection part,

a first connection ring part mounted on the outer cap part;

a second connection ring part surrounding the outer surface of the vent part;

a connecting member connecting the first connecting ring portion and the second connecting ring portion;

a first tightening part movably mounted on the connection member and moving toward the first connection ring part to tighten the first connection ring part; and

The vent cap, characterized in that it is movably mounted on the connection member, and is moved toward the second connection ring portion, characterized in that it comprises a second tightening portion for tightening the second connection ring portion.
9. The method of claim 8,

The connecting member is a vent cap, characterized in that it comprises an elastically deformable material.