KR101396896B1 - Gas container and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a method for manufacturing an upper body connected to the upper part of a body of a gas container charged with gas which includes a step of pressing the center of a metal plate in order to form a dome-shaped main body unit; a step of pressing the metal plate having the main body unit in order to form a shimming connection unit, which is connected to the body along the edge of the upper body, and a curve unit, which is connected to the shimming connection unit by being extended from the main body unit and extended to be separated from the body as at least a part is curved to the opposite direction to a dome shape, on the metal plate; and a step of generating an explosion prevention groove on at least a part of a rounding connection unit connecting between the curve unit and the shimming connection unit at a rounded shape.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas container having an explosion-proof function,

The present invention relates to a gas container having an explosion-proof function for preventing explosion by overpressure, and a method of manufacturing the same.

Generally, a dispenser refers to a container that allows the contents to be discharged to the outside by using the internal pressure while the contents (fluid or gas) to be injected are sealed inside the housing. Typical examples of such dispensers are portable gas containers, spray mosquito repellents, hair sprays, portable aerosol fire extinguishers, and gas lighter containers.

Generally, the dispenser includes a container housing (can) for containing contents, a mount cup fixed to the upper end of the housing, and an upper cap connected to the mount cup and the housing, respectively. The valve assembly mounted on the mount cup maintains the closed state when the dispenser is not in use, and allows the contents to flow out only when the dispenser is used.

The dispenser can reach overpressure conditions for thermal, mechanical or chemical reasons during use or storage, and various measures are being considered to overcome this overpressure.

Korean Patent No. 10-1002301 discloses a method of eliminating overpressure by using a groove for preventing explosion. However, when a press is applied to form a groove in the gas container, the opposite side wall of the groove protrudes, resulting in a problem that the thickness of the groove portion is not as thin as theoretically. The above problem may cause defective deterioration preventing groove. Therefore, the present invention proposes a method of manufacturing an explosion preventing groove having a low defect rate and a structure of a gas container manufactured thereby.

The present invention is intended to realize a gas container which is manufactured by a simple method but has a low defect rate and ensures explosion-proof performance.

According to an aspect of the present invention, there is provided a method of manufacturing an upper body coupled to an upper end of a body of a gas container filled with a gas, the method comprising the steps of: Pressing the central portion of the upper body to a desired position, a seaming engaging portion seamed to the body along an edge of the upper body, and extending from the main body portion to the seaming engagement portion, Applying a press to the metal plate formed with the main body portion so that a curved portion curved and extending in a direction away from the body is formed on the metal plate; and a rounding step of connecting the curved portion and the seaming engagement portion in a round- And creating an explosion-proof groove in at least a part of the connecting portion.

In one embodiment of the present invention, the generating step is a step of applying a press to the metal body having the main body portion, the seaming portion and the curved portion such that the explosion-proof groove is formed in at least a part of the rounded connecting portion . The explosion-proof groove may extend to at least one of the seaming part and the curved part.

According to another embodiment of the present invention, the explosion-proof groove includes a first groove formed in the rounded connection portion, a second groove formed in the seaming engagement portion, and a third groove formed in the side wall of the curved portion do. The second groove may be formed by pressing by a tool during press working, and the third groove may be formed by cutting by the tool during the pressing.

As another example related to the present invention, the first groove and the third groove are formed by cutting at least a part by the edge of the tool, respectively. The tool may be pressed to cut along at least a part of the round connecting portion along the longitudinal direction of the body.

According to another embodiment of the present invention, the round connecting portion may be formed in a circular shape along the circumference of the dome, and the blast prevention groove may be disposed at a plurality of predetermined intervals along the outer circumference of the circular shape.

According to another aspect of the present invention, there is provided a method of manufacturing a gas container having a gas filled therein, the method comprising the steps of: pressing a central portion of a metal plate so as to form a main body portion on an upper body coupled to an upper end portion of the body; A main body portion extending from the main body portion to the seaming engagement portion and at least a part of which is curved in a direction opposite to the dome shape and extending in a direction away from the body, Applying a press to the metal plate having the main body portion so that the main body portion is formed on the metal plate and forming an explosion prevention groove in at least a part of the rounded connecting portion connecting the curved portion and the seaming portion in a rounded shape And combining the seaming engagement portion with the body in a double or triple seam It proposes a method of producing the gas container containing the steps:

According to another aspect of the present invention, there is provided a gas container including a body filled with a gas and an upper body coupled to an upper end of the body, wherein the upper body is formed to mount a valve for discharging the gas, A main body portion formed in the main body portion and having a seaming engagement portion formed along an edge of the upper body and seam-coupled with the body; and at least a portion extending from the main body portion to the seaming engagement portion, A round connecting portion for connecting the curved portion and the seaming engagement portion in a rounded shape; and a pressing portion for pressing the metal plate having the main body portion, the seaming portion and the curved portion, A gas container including an explosion-proof groove formed in at least a part of the round connecting portion, present.

The gas container according to the present invention configured as described above can be formed by cutting the side wall of the explosion-proof groove by processing the explosion-proof groove in the seaming part and the metal plate formed with the curved part. Through this, the thickness of the upper cap at the periphery of the explosion-proof groove can be more accurately manufactured.

In addition, since the explosion-proof groove extends to the seaming engagement portion, a gas container that discharges gas to the outside in response to deformation of the seaming engagement portion can be realized.

1 is a longitudinal sectional view of a gas container according to an embodiment of the present invention;
2 is a plan view showing the top cap in the gas container of Fig. 1;
3 is a cross-sectional view of the upper cap of Fig.
Figs. 4A and 4B are enlarged views of a portion A in Fig. 2 and a portion B in Fig. 3, respectively.
5 is a conceptual view showing a method of manufacturing the explosion-proof groove of FIG.
6A to 6C are operation diagrams showing the operation of the explosion-proof groove of FIG.

Hereinafter, a gas container having an explosion-proof function and a method of manufacturing the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

1 is a longitudinal sectional view of a gas container according to an embodiment of the present invention.

Referring to the drawings, the gas container 100 includes a housing 110 and a valve assembly 111.

The housing 110 is formed to have a housing space S for accommodating the gas and both ends of the housing 110 may be equipped with a lower cap 112 and an upper cap 200 for sealing the housing.

The upper cap 200 is coupled to the housing 110 in a double or triple seam. However, the present invention is not limited thereto, and the upper cap 200 may be coupled to the housing 110 by welding or the like.

The lower cap 112 may have a curved shape toward the accommodation space S so as to be deformed to enlarge the volume of the accommodation space S when a certain level of overpressure is applied to the accommodation space S. [

The gas container 100 may contain a high-pressure gas or a liquid fuel, and may be formed in the form of a metal can that can withstand a constant internal pressure. However, the present invention is not limited thereto, and the gas container 100 may contain pesticides, fragrances, cosmetics, and the like.

In the illustrated embodiment, a mount cup 113 for supporting the valve assembly 111 is coupled to the upper end of the upper cap 200. The mount cup 113 includes a latching portion for mounting the fuel-mounting device such as a gas stove, for example, and a protruding portion for fixing the valve assembly 111 is provided at the center.

The valve assembly 111 is installed in the mount cup 113 with one end disposed in the accommodation space S and the other end exposed to the outside of the housing 110, The contents are sprayed to the outside.

In the upper cap of the present invention, an explosion-proofing mechanism is formed, through which the explosion-proof performance of the gas container can be secured. Hereinafter, the explosion-proof mechanism will be described in more detail.

Fig. 2 is a plan view showing the upper cap in the gas container of Fig. 1, Fig. 3 is a sectional view of the upper cap of Fig. 2, Figs. 4a and 4b are enlarged views of part A of Fig. FIG. 5 is a conceptual diagram showing a method of manufacturing the explosion-proof groove of FIG. 3, and FIGS. 6A to 6C are operation diagrams showing the operation of the explosion-proof groove of FIG.

The upper cap 200 coupled to the upper end of the housing 110 includes a main body 210, a curved portion 220, a seaming portion 230, and a rounded connection portion 240.

The main body 210 is formed to have a valve for discharging gas, and has a dome shape (or a vertical shape). More specifically, a mount cup 113 is mounted on an upper end of the main body 210, and a valve assembly is coupled to the mount cup 113.

The main body 210 is bent at least partially around the lower end of the main body 210 so as to extend to the upper end of the main body 210 in order to couple the main body 210 to the housing. More specifically, at least a part of the lower end may be curved in a direction opposite to the dome shape and formed as a curved portion 220 extending in a direction away from the housing 110. A portion of the curved portion 220 extending in a direction away from the housing 110 (see FIG. 1) may be formed along the longitudinal direction of the housing 110.

The shim engaging portion 230 may be formed along the edge of the upper cap 200 and seam-coupled with the housing 110. The seaming joining part 230 may be coupled to the housing 110 by double or triple seaming. However, the present invention is not limited thereto, and the seaming part 230 may be formed by a single seaming.

The curved part 220 extends from the main body part 210 and extends to the seaming part 230. Between the curved part 220 and the seaming part 230, A rounding connection part 240 is formed to connect the part 230 in a rounded shape. The round connecting part 240 connects the seaming part 230 with a part of the curved part 220 extending in a direction away from the housing 110 in a substantially quadrant shape.

Referring to the drawings, an explosion-proof groove 250 may be formed in the round connecting portion 240.

In this case, if the coupling between the upper cap 200 and the housing 110 is released in the seaming coupling part 230, it can be defined as an explosion. However, the definition of the explosion may be a concept including the explosion of the housing itself and the release of the coupling between the lower cap and the housing.

The explosion prevention groove 250 is a place for discharging the high-pressure gas inside the housing 110 to the outside before the explosion occurs. The detonation preventing groove 250 may be formed radially in the round connecting portion 240 with respect to the center axis of the valve assembly. More specifically, the round connecting part 240 is formed in a circular shape around the dome-shaped periphery, and the explosion-proofing grooves 250 are arranged at a plurality of predetermined intervals along the outer periphery of the circular shape.

4A and 4B, the explosion-proof groove 250 extends from the rounded connecting part 240 to at least one of the seaming part 230 and the curved part 220. [ As a more specific example, the explosion-proof groove 250 may include a first groove 251, a second groove 252, and a third groove 253.

The first groove 251 may be formed in the round connecting portion 240, and some of the first groove 251 may be formed by being pressed by a tool during press working, and the other portion may be formed by cutting by the tool. Further, the second groove 252 is formed in the seaming joining part 230 and press-formed by the tool at the time of the press working. The third groove 253 is formed on the sidewall of the curved portion 220 and is cut by the tool during the pressing. As such, the first groove and the third groove are formed by cutting at least a part by the edge of the tool, respectively.

If a press is applied to form a groove in the gas container, the portion to be pressed is pushed to protrude from the opposite side wall of the groove, or the thickness of the flesh around the groove increases. As a result, There arises a problem that it is not thin. However, in the present invention, since the first groove 251 and the third groove 253 are generated by the shearing force by the tool, the metal plate is cut. Through this, the thickness of the upper cap at the periphery of the explosion-proof groove can be more accurately manufactured.

The explosion-proof groove 250 is broken or torn due to pressure rise due to the high-pressure gas before the explosion, thereby generating an opening to discharge the high-pressure gas inside the container. More specifically, when the round connecting portion is deformed by the internal pressure of the gas container, the explosion-proof groove is opened before the gas container explodes.

6A to 6C, deformation does not occur before high heat or an external force is applied to the gas container. In this state, when heat or an external force is applied to the gas container, the curved portion 220 swells up first and then the round connecting portion 240 is deformed. The deformation of the round connecting part 240 is caused by the disengagement of the seaming part 230 due to the internal pressure of the gas container. The explosion-preventing groove 250 is broken or torn due to the deformation of the upper body, and an opening is formed through the explosion-preventing groove 250 to discharge the gas to the outside. Through this process, explosion of the gas container can be prevented.

The explosion-proof mechanism described above can be manufactured by the manufacturing method of FIG.

First, the pressing device presses the central portion of the metal plate so that the main body is formed on the upper body coupled to the upper end of the body of the gas container (see FIG. 5 (a)). Next, a press is applied to the metal plate formed with the main body portion so that the seam joining portion and the curved portion are formed on the metal plate (see Fig. 5 (b)).

Next, an explosion-proof groove is formed in at least a part of the rounded connecting portion connecting the curved portion and the seam joint portion in a rounded shape (see Fig. 5 (c)). In this case, the generating step may be a step of applying a press to the metal body having the main body portion, the seaming portion and the curved portion so that the explosion-proof groove is formed in at least a part of the rounded connecting portion. As described above, the explosion-proof groove extends to at least one of the seaming part and the curved part, and has a first groove 251 formed in the round connecting part, a second groove 252 formed in the seaming part, And a third groove 253 (see FIG. 4B) formed on the side wall of the curved portion.

The second grooves are formed by pressing with a tool T at the time of press working, and the first grooves and the third grooves are formed by cutting at least a part by the edges of the tool T, respectively. In this case, the tool T enters the longitudinal direction of the gas container body by pressing to cut at least a part of the round connecting portion.

According to the above-described manufacturing method, the upper body is completed, and the upper body is coupled to the body of the gas container. For this coupling, the seaming part is joined to the body by double or triple seaming by a seaming device (not shown).

As described above, after the seam joining portion and the curved portion are formed, at least a part of the explosion-proofing groove can be realized by cutting as the explosion-proofing groove is formed in the metal plate.

The gas container having the explosion-proof function and the method of manufacturing the gas container are not limited to the configuration and the operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

Claims (10)

A method of manufacturing an upper body coupled to an upper end of a body of a gas container filled with a gas,
Pressing a central portion of the metal plate so as to form a main body portion having a dome shape;
A shim coupling part extending from the main body part and extending to the seaming part, at least a part of which is curved in a direction opposite to the dome shape and extending in a direction away from the body; Applying a press to the metal plate formed with the main body portion so that a curved portion formed on the metal plate is formed on the metal plate. And
And forming an explosion prevention groove in at least a part of the rounded connecting portion connecting the curved portion and the seamed coupling portion in a rounded shape,
The explosion-
A first groove formed in the rounded connecting portion, the first groove being formed by cutting at least a part by a corner of the tool during press working;
A second groove formed in the seam joining portion, the second groove being formed by pressing by the tool during the pressing; And
And a third groove formed on a side wall of the curved portion and formed by cutting by the tool during the pressing,
Wherein the generating comprises:
Wherein the step of applying the press to the metal plate having the main body portion, the seaming portion and the curved portion is performed so that the explosion-proof groove has the first groove, the second groove and the third groove. . delete The method according to claim 1,
Wherein the explosion-proof groove extends to at least one of the seaming part and the curved part. delete delete delete The method according to claim 1,
Wherein the tool moves along the longitudinal direction of the body by pressing to cut at least a part of the round connecting portion. The method according to claim 1,
The round connecting portion is formed in a circular shape along the circumference of the dome,
Wherein the plurality of explosion-proof grooves are arranged at predetermined intervals along an outer periphery of the circular shape. 1. A method for manufacturing a gas container in which a gas is filled,
Pressing a central portion of the metal plate so that a main body portion having a dome shape is formed on the upper body coupled to the upper end portion of the body of the gas container;
A shim coupling part extending from the main body part and extending to the seaming part, at least a part of which is curved in a direction opposite to the dome shape and extending in a direction away from the body; Applying a press to the metal plate formed with the main body portion so that a curved portion formed on the metal plate is formed on the metal plate.
Creating an explosion-proof groove in at least a part of the rounded connecting portion connecting the curved portion and the seamed coupling portion in a rounded shape; And
Coupling the shim coupling portion to the body in a double or triple seam,
The explosion-
A first groove formed in the rounded connecting portion, the first groove being formed by cutting at least a part by a corner of the tool during press working;
A second groove formed in the seam joining portion, the second groove being formed by pressing by the tool during the pressing; And
And a third groove formed on a side wall of the curved portion and formed by cutting by the tool during the pressing,
Wherein the generating comprises:
And pressing the metal plate material having the main body portion, the seaming portion and the curved portion so that the explosion-proof groove has the first groove, the second groove and the third groove. . delete

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