KR102453126B1 - Injection assembly for vehicle high pressure vessel - Google Patents

Abstract

According to the present invention, it is located in the injection part of the high-pressure vessel, the nozzle through-hole into which the nozzle is inserted is formed to extend in the vertical direction, the boss of a metal material formed with a coupling portion extending downward from the nozzle through-hole; It is a synthetic resin material and is coupled to the lower surface of the boss through insert injection, and a first communication hole communicating with the nozzle through hole is formed in the central part, and the coupling part passes through the first communication hole, and at least part of the lower surface is on the upper surface of the high pressure vessel liner. connectors to be fused; and a coupling ring having a second communication hole communicating with the nozzle through hole formed, coupled to the coupling portion of the boss through the second communication hole, and pressing the connector toward the boss during fastening; is introduced

Description

Injection part assembly of high pressure vessel for vehicle {INJECTION ASSEMBLY FOR VEHICLE HIGH PRESSURE VESSEL}

The present invention relates to an injection part assembly of a high-pressure container, and is a technology for preventing a fluid inside the high-pressure container from leaking by coupling a metal boss and a plastic connector to the high-pressure container.

In general, in order to operate a vehicle, a fuel storage capable of supplying fuel is required. Specifically, a hydrogen fuel cell vehicle running by burning hydrogen gas requires a fuel storage capable of supplying hydrogen, and most of the hydrogen fuel storage has the shape of a tank container.

On the other hand, the high-pressure container in the shape of a tank, which is a fuel storage for a hydrogen fuel cell vehicle, must be secured because the inside of the container is maintained in an ultra-high pressure state when it is filled with hydrogen due to the characteristics of hydrogen gas. There is a need to prevent leakage of hydrogen gas from the inside of the unit to the outside.

Conventionally, the high-pressure container for hydrogen gas is a sealing part where the injection part and the nozzle are combined.

There was a problem of hydrogen leakage when the durability fell. Specifically, in the case of an injection unit in which dissimilar materials of plastic and metal are combined, fine peeling may occur according to repeated contraction/expansion of the container. Accordingly, there is a need for an injection unit assembly for a high-pressure container for a vehicle that can easily secure stability compared to a conventional high-pressure container and prevent loss due to leakage of hydrogen gas by improving the structure of the injection part of the high-pressure container for hydrogen gas.

The matters described as the background art above are only for improving the understanding of the background of the present invention, and should not be taken as an acknowledgment that they correspond to the prior art already known to those of ordinary skill in the art.

KR 10-2017-0130651 A

The present invention has been proposed to solve this problem, by insert-injecting a connector to the lower part of a metal boss and attaching the connector, fixing the connector with a coupling ring, and bonding the connector and the high-pressure container to prevent the fluid inside the high-pressure container from leaking. The purpose is to prevent it.

The injection part assembly of the high-pressure container for a vehicle according to the present invention is located in the injection part of the high-pressure container, the nozzle through-hole into which the nozzle is inserted is formed to extend in the vertical direction, and a metal material in which a coupling part extending downward from the nozzle through-hole is formed. boss of; It is a synthetic resin material and is coupled to the lower surface of the boss through insert injection, and a first communication hole communicating with the nozzle through hole is formed in the central part, and the coupling part passes through the first communication hole, and at least part of the lower surface is on the upper surface of the high pressure vessel liner. connectors to be fused; and a coupling ring in which a second communication hole communicating with the nozzle through hole is formed, coupled to the coupling portion of the boss through the second communication hole, and pressing the connector toward the boss during fastening.

A screw thread is formed on the outer surface of the coupling part, and a screw thread is formed on the inner surface of the second communication hole, so that the coupling ring may be coupled to the coupling part by bolting.

The lower surface of the boss is inserted into the mold in a pre-processed state to improve heterogeneous bonding, and the connector is insert-injected so that the upper surface of the connector can be joined to the lower surface of the boss.

The boss may include a protrusion protruding from the lower surface to the connector side or a groove recessed upwardly, and the connector may surround the protrusion or be inserted into the groove, and may be insert-injected and joined to the boss.

The lower surface of the connector includes a protrusion protruding downward and a groove recessed upwardly on the outside and inside of the protrusion, the protrusion is fusion-bonded with the liner, and the molten protrusion may be injected into the groove.

One side of the connector may be vertically spaced apart from the liner, and the other side of the lower surface may be fusion-bonded with the liner.

The connector includes a deformable part that surrounds the outside of the boss and extends outward, and the deformable part may be deformed when the fluid injected into the high-pressure container in contact with the high-pressure container is expanded or compressed.

The boss may further include a stepped portion having a lower surface stepped upward, and the connector may be inserted into the stepped portion during insert injection such that the upper surface is joined to the lower surface of the boss.

The coupling ring includes an extended portion extending upward along the rim of the second communication hole from the upper surface, and the extended portion may be in contact with a portion of the lower surface of the boss and a portion of the lower surface of the connector to press upward.

The connector is fusion-bonded to the liner, and the connector and the liner may be made of the same material.

The high-pressure container is formed of a liner and a composite material, the liner and the connector are coupled in a state in which the boss, the connector, and the coupling ring are coupled to each other, and the composite material may be coupled while surrounding the outer surface of the boss, the connector and the liner.

The injection part assembly of the high-pressure container for a vehicle according to the present invention has the effect of improving the coupling force when the connector made of synthetic resin is insert-injected to the lower surface of the boss after pre-processing the lower surface of the metal boss, and the connector is formed of the same material It is fusion-bonded to the liner to prevent fluid inside the liner.

In addition, the coupling ring is pressed upwardly and bolted to the coupling part extending from the lower part of the boss to improve coupling force between the connector and the boss, and there is an effect of preventing gas from leaking between the connector and the boss.

1 is a perspective view of an injection unit assembly of a high-pressure container for a vehicle according to an embodiment of the present invention;
2 is a cross-sectional view of an injection unit assembly of a high-pressure container for a vehicle according to an embodiment of the present invention;
3 is a cross-sectional view in which the injection unit assembly of the high-pressure container for a vehicle according to an embodiment of the present invention is coupled to the high-pressure container.

Specific structural or functional descriptions of the embodiments of the present invention disclosed in the present specification or application are only exemplified for the purpose of describing the embodiments according to the present invention, and the embodiments according to the present invention are implemented in various forms. and should not be construed as being limited to the embodiments described in the present specification or application.

Since the embodiment according to the present invention may have various changes and may have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiment according to the concept of the present invention with respect to a specific disclosed form, and should be understood to include all changes, equivalents or substitutes included in the spirit and scope of the present invention.

Terms such as first and/or second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one element from another element, for example, without departing from the scope of the present invention, a first element may be called a second element, and similarly The second component may also be referred to as the first component.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Other expressions describing the relationship between elements, such as "between" and "immediately between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. As used herein, terms such as “comprise” or “have” are intended to designate that an embodied feature, number, step, action, component, part, or combination thereof exists, and is intended to indicate that one or more other features or numbers are present. , it should be understood that it does not preclude the existence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as meanings consistent with the context of the related art, and unless explicitly defined in the present specification, they are not to be interpreted in an ideal or excessively formal meaning. .

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

1 is a perspective view of an injection part assembly of a high-pressure container 400 for a vehicle according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of an injection part assembly of a high-pressure container 400 for a vehicle according to an embodiment of the present invention, FIG. 3 is a cross-sectional view in which the injection unit assembly of the high-pressure container 400 for a vehicle according to an embodiment of the present invention is coupled to the high-pressure container 400 .

With reference to FIGS. 1 to 3, a preferred embodiment of the injection part assembly of the vehicle high-pressure container 400 according to the present invention will be described.

The injection part assembly of the high-pressure container 400 for a vehicle according to the present invention is located in the injection part of the high-pressure container 400, the nozzle through hole 110 into which the nozzle is inserted is formed to extend in the vertical direction, and the nozzle through hole ( a boss 100 made of a metal material in which a coupling portion 120 extending downward from 110 is formed; It is a synthetic resin material and is coupled to the lower surface of the boss 100 through insert injection, and a first communication hole communicating with the nozzle through hole 110 is formed in the central part so that the coupling part 120 passes through the first communication hole, and the lower surface At least some of the connector 200 is fusion-bonded to the upper surface of the high-pressure vessel 400, the liner 410; and a second communication hole communicating with the nozzle through hole 110 is formed, and is fastened to the coupling portion 120 of the boss 100 through the second communication hole, and the connector 200 is directed toward the boss 100 during fastening. It includes a coupling ring 300 for pressing.

1 to 2, the boss 100 is located on the upper side of the injection unit assembly, and the nozzle through hole 110 into which the nozzle is inserted is formed in the center, and the nozzle through hole 110 is the boss 100. It penetrates in the vertical direction from the center of the The boss 100 is made of a metal material, and the coupling part 120 extending downward along the edge of the nozzle through hole 110 is formed at the bottom.

According to an embodiment of the present invention, the boss 100 may be made of AL T6061, and may be manufactured by forging and processing.

The connector 200 coupled to the lower portion of the boss 100 is fused to the lower portion of the boss 100 by insert-injecting the boss 100 into the mold, and may be made of a synthetic resin material. A portion of the lower surface of the connector 200 may be fusion-bonded with the liner 410 forming the inside of the high-pressure vessel 400 . In addition, a first communication hole communicating with the nozzle through hole 110 is formed in the center of the connector 200 , the coupling part 120 passes through the first communication hole, and the connector 200 is fusion-bonded with the boss 100 . can be

In an embodiment of the present invention, the connector 200 may be made of a PA6 material, which is a synthetic resin material.

The high-pressure vessel 400 may be formed of a liner 410 forming the inside and a composite material 420 surrounding the outside of the liner 410 .

A portion of the lower surface of the connector 200 may be coupled to the liner 410 so that the injection unit assembly may be coupled to the high-pressure vessel 400 .

A coupling ring 300 is positioned at a lower portion of the connector 200 , and the coupling ring 300 is coupled to the coupling part 120 and may press the connector 200 upward.

In an embodiment of the present invention, the coupling ring 300 may be manufactured by processing and molding aluminum of AL T6061, which is the same material as the boss 100 .

Through this, the injection unit assembly may be coupled to the connector 200 , the connector 200 is fusion-bonded to the liner 410 , the coupling ring 300 presses the connector 200 upward, and the coupling unit 120 . There is an effect that can prevent the fluid inside the liner 410 from leaking as it is coupled to the liner 410 .

A screw thread is formed on the outer surface of the coupling part 120 , and a screw thread is formed on the inner surface of the second communication hole, so that the coupling ring 300 may be coupled to the coupling part 120 by bolting.

The coupling part 120 and the coupling ring 300 may be coupled through the threads formed on the outer surface of the coupling part 120 and the inside surface of the coupling ring 300, respectively, and the upper surface of the coupling ring 300 is connected to the connector ( 200) may be in contact with some of the lower surfaces.

The coupling ring 300 is coupled to the coupling part 120 formed on the lower part of the boss 100 through bolting, and by pressing the connector 200 upward to improve the coupling force between the boss 100 and the connector 200. can have an effect.

The lower surface of the boss 100 is inserted into the mold in a pre-processed state to improve heterogeneous bonding, and the connector 200 is insert-injected so that the upper surface of the connector 200 can be joined to the lower surface of the boss 100 .

When the boss 100 and the connector 200 are joined, the boss 100 is inserted into the mold and the synthetic resin is insert-injected to form the connector 200 , and the connector 200 may be joined to the lower surface of the boss 100 . In this case, the lower surface of the boss 100 may be pre-processed after manufacturing in order to improve the bonding force between the connector 200 and the boss 100 .

As various embodiments of the present invention, the pretreatment of the lower surface of the boss 100 may be TRI coating, etching, processing bonding, or adhesive application.

Through this, there is an effect that the bonding force between the boss 100 and the connector 200 can be increased.

The boss 100 includes a protrusion 130 protruding from the lower surface toward the connector 200 or a groove 140 recessed upwardly, and the connector 200 surrounds the protrusion 130 or is inserted into the groove 140 , The insert may be injected and joined to the boss 100 .

The boss 100 has a protrusion 130 protruding from the lower surface to the connector 200 side, and the connector 200 has a protrusion 130 inserted into the connector 200 during insert injection, and the connector 200 has a protrusion 130 . ) may be combined with the boss 100 while enclosing it.

In addition, the boss 100 is formed with a groove 140 recessed upward from the lower surface, the connector 200 is inserted into the groove 140 during insert injection, and the connector 200 and the boss 100 can be coupled. .

Through this, there is an effect of strengthening the coupling force between the connector 200 and the boss 100 .

The lower surface of the connector 200 includes a protrusion 210 protruding downward and a groove 220 recessed upwardly on the outside and inside of the protrusion 210, and the protrusion 210 is fusion-bonded with the liner 410, The molten protrusion 210 may be injected into the groove 220 .

The connector 200 may have a protrusion 210 protruding downward from the lower surface to be partially coupled to the liner 410 on the lower surface, and the protrusion 210 may be fusion-bonded with the liner 410 to be sealed.

In addition, the molten protrusion 210 is inserted into the grooves 220 formed inside and outside the protrusion 210 , and the insertion surface is flattened, thereby preventing the fluid inside the liner 410 from leaking.

One side of the lower surface of the connector 200 may be vertically spaced apart from the liner 410 , and the other side of the lower surface may be fusion-bonded with the liner 410 .

As shown in FIG. 3 , the liner 410 coupled to the connector 200 is fusion-bonded with the protrusion 210 , and the liner 410 from the fusion-bonded portion with the protrusion 210 to the inside is the connector 200 and the liner 410 . It may be spaced apart in the vertical direction.

Through this, the liner 410 is expanded into the space between the connector 200 and the liner 410 in preparation for the fluid inside the liner 410 to be compressed or expanded due to the external environment, and accordingly the liner 410 or the connector ( 200) has the effect of preventing damage.

The connector 200 includes a deformable part 230 that surrounds the outside of the boss 100 and extends to the outside, and the deformable part 230 is in contact with the high-pressure container 400 and is injected into the high-pressure container 400 . A fluid may deform when it expands or compresses.

The deformable portion 230 that extends outward from the protrusion 210 of the connector 200 and surrounds the outer end of the boss 100 is in contact with the outside of the liner 410 in an unbonded state, and When the liner 410 is deformed by expansion or compression of the fluid therein, it may be deformed together.

Through this, it is possible to prepare for damage to the connector 200 due to the expansion of the liner 410 , and as the deformable part 230 is formed to surround the outer end of the boss 100 , when the liner 410 expands, the boss 100 ) has the effect of preventing the liner 410 from being damaged by the outer end.

The boss 100 further includes a stepped portion 150 having a lower surface stepped upward, and the connector 200 is inserted into the stepped portion 150 during insert injection and formed so that the upper surface is joined to the lower surface of the boss 100 . can be

The stepped portion 150 is formed to be stepped upward from the lower surface of the boss 100 , and when the connector 200 is insert injection-molded and joined to the boss 100 , it may be inserted into and joined to the stepped portion 150 .

Through this, there is an effect of improving the bonding force between the connector 200 and the boss 100 .

The coupling ring 300 includes an extension portion 310 extending upward along the edge of the second communication hole from the upper surface, and the extension portion 310 includes a portion of the lower surface of the boss 100 and a portion of the lower surface of the connector 200 and It can be in contact and pressurized upward.

As shown in FIGS. 1 to 3 , the extension part 310 extending along the edge of the second communication hole from the upper surface of the coupling ring 300 has an extension part ( One side of the 310 may be in contact with the boss 100 to pressurize, and the other side may be in contact with the connector 200 to pressurize.

Through this, as the extension 310 simultaneously presses the boss 100 and the connector 200 , it is possible to prevent the fluid inside the liner 410 from leaking between the boss 100 and the connector 200 . .

The connector 200 is fusion-bonded to the liner 410 , and the connector 200 and the liner 410 may be made of the same material.

The connector 200 is fusion-bonded with the protrusion 210 to the liner 410, the connector 200 is made of a PA6 synthetic resin according to an embodiment of the present invention, and the liner 410 is also made of a PA6 material. It may be fusion-bonded with the connector 200 .

Through this, the bonding force is strengthened through fusion bonding between the same materials, and it is possible to prevent the fluid inside the liner 410 from leaking to the outside.

The high-pressure vessel 400 is formed of a liner 410 and a composite material 420, the boss 100, the connector 200, and the coupling ring 300 are coupled to each other, the liner 410 and the connector 200 are The composite material 420 may be coupled while surrounding the outer surfaces of the boss 100 , the connector 200 , and the liner 410 .

The composite material 420 is formed to surround the liner 410, and the connector 200 and the liner 410 are fusion-bonded in a state in which the boss 100, the connector 200 and the coupling ring 300 are integrally coupled, Thereafter, the composite material 420 may be formed to surround the liner 410 , the connector 200 , and the boss 100 .

Through this, the injection unit assembly is coupled to the high-pressure container 400 for a vehicle, thereby preventing the fluid inside the liner 410 from being ejected to the outside.

Although shown and described in relation to specific embodiments of the invention, it is common in the art that the present invention can be variously improved and changed without departing from the spirit of the present invention provided by the following claims. It will be self-evident to those who have the knowledge of

100 : Boss
110: nozzle through hole
120: coupling part
130: protrusion
140: home
150: step part
200: connector
210: protrusion
220: home
230: deformation part
300: coupling ring
310: extension
400: high pressure vessel
410: liner
420: composite material

Claims (11)

a metal boss positioned in the injection part of the high-pressure container, the nozzle through-hole into which the nozzle is inserted is formed to extend in the vertical direction, and the coupling part extending downward from the nozzle through-hole is formed;
It is a synthetic resin material and is coupled to the lower surface of the boss through insert injection, and a first communication hole communicating with the nozzle through hole is formed in the central part, and the coupling part passes through the first communication hole, and at least part of the lower surface is on the upper surface of the high pressure vessel liner. connectors to be fused; and
A second communication hole communicating with the nozzle through hole is formed, and the coupling ring is fastened to the coupling portion of the boss through the second communication hole, and presses the connector toward the boss during fastening.
An injection unit assembly for a high-pressure container for a vehicle, characterized in that a protrusion protruding downward is formed on the lower surface of the connector and fusion-bonded with the liner, and one lower surface of the connector is spaced apart from the liner in the vertical direction. The method according to claim 1,
A screw thread is formed on the outer surface of the coupling part, and a screw thread is formed on the inner surface of the second communication hole, and the coupling ring is coupled to the coupling part by bolting. The method according to claim 1,
The boss is inserted into the mold in a state where the lower surface of the boss is pre-processed to improve heterogeneous bonding, and the connector is insert-injected so that the upper surface of the connector is joined to the lower surface of the boss. The method according to claim 1,
The boss includes a protrusion protruding from the lower surface to the connector side or a groove recessed upwardly, and the connector wraps the protrusion or is inserted into the groove, and is insert-injected and joined to the boss. The method according to claim 1,
An injection part assembly of a high-pressure container for a vehicle, characterized in that the lower surface of the connector includes grooves recessed upwardly on the outside and the inside of the protrusion, and the molten protrusion is fusion-bonded and injected into the groove. The method according to claim 1,
The connector is an injection part assembly of a high-pressure container for a vehicle, characterized in that the other side of the lower surface is fusion-bonded with the liner. The method according to claim 1,
The connector includes a deformable part that surrounds the outside of the boss and extends outward, and the deformable part is deformed when the fluid injected into the high-pressure container in contact with the high-pressure container is expanded or compressed. The method according to claim 1,
The boss further includes a step portion formed so that the lower surface is stepped upward,
The connector is inserted into the step portion during insert injection and the upper surface is joined to the lower surface of the boss. The method according to claim 1,
The coupling ring includes an extended portion extending upward along the rim of the second communication hole from the upper surface, and the extended portion is in contact with a portion of the lower surface of the boss and a portion of the lower surface of the connector and pressurizes upward. . The method according to claim 1,
The connector is fusion-bonded to the liner, and the connector and the liner are made of the same material. The method according to claim 1,
The high-pressure vessel is formed of a liner and a composite material,
The boss, the connector, and the coupling ring are coupled to each other in a state where the liner and the connector are coupled, and the composite material is coupled while surrounding the outer surface of the boss, the connector and the liner.

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