KR102253368B1 - cartridge for gas injection - Google Patents

Abstract

The present invention relates to a cartridge for gas injection, comprising: a body with an opened upper side; and an inner cap inserted into the opened body. The inner cap includes a hanging bump protruding outward. The body includes: a neck placed on an upper side of the body to communicate with the inside of the body and to include an entrance formed to be smaller than the diameter of the body; an entry path formed in an inner side surface of the neck; and a hanging path formed on an inner side surface of the neck to be placed to cross the entry path. The hanging bump enters the neck through the entry path, and is inserted into the hanging path, forming a mutual hanging in a longitudinal direction of the body. The present invention is able to allow the hanging unit of the inner cap to be fixed in the body after it is inserted into the body through the entry path and the hanging path formed on the inner side surface of the body, so the present invention is able to prevent the inner cap from being separated from the body and reduce an error in the gas injection process.

Description

Cartridge for gas injection {cartridge for gas injection}

The present invention relates to a gas injection cartridge capable of storing gas in a container made of a metal material.

In general, due to the diversification of diet, a soda water maker such as soda water using a siphon device and a whipping device or a fresh cream maker are variously used at home, and a soda water maker or a fresh cream maker uses a capsule-type cartridge filled with gas inside.

In addition, veterinary hospitals or dermatologists also perform surgery using cartridges filled with nitrous oxide.

The cartridge may be filled with carbonic acid (CO2) gas, nitrous oxide (N2O) gas, oxygen (O2) gas, or nitrogen (N2) gas.

A domestic registered utility model 20-0173366 discloses a whipping device, and a disposable tank gas container is also disclosed in the prior art.

Conventional cartridges are manufactured by cutting out and forging an iron plate to make a cylindrical body, inserting an inner cap and an O-ring at the inlet, injecting gas, and then performing electric spark welding to seal.

However, the conventional cartridge has a problem in that the inside is corroded by the injected gas, as well as a problem collection of heavy weight.

In addition, the conventional cartridge has a problem that a significant material loss cannot be avoided and the dimensional accuracy is inferior because of cutting and using an iron plate.

Republic of Korea Utility Model Registration No. 20- 0173366

An object of the present invention is to provide a gas injection cartridge capable of storing gas in a container made of a metal material.

An object of the present invention is to provide a gas injection cartridge capable of preventing gas leakage by disposing the inner cap of the present invention on the inlet side of the body.

An object of the present invention is to provide a gas injection cartridge capable of preventing the leakage of gas by engaging or fitting the inner cap and the body to each other.

The present invention, the upper body is opened; And an inner cap inserted into the opened body, wherein the inner cap includes a locking protrusion protruding outward, and the body is disposed on the upper side of the body and communicates with the inside of the body, and the diameter of the body A neck including an inlet formed smaller than that; An entry path formed along the inner side of the neck; A locking path formed on the inner side of the neck and disposed to cross the entry path, wherein the locking protrusion enters the interior of the neck through the entry path, is inserted into the locking path, and Mutual jams are formed in the longitudinal direction.

A plurality of the entry paths may be arranged, and the plurality of entry paths may be arranged radially with respect to the axial center of the body 100.

The locking path may be arranged to connect a plurality of the entry paths.

The entry path is formed to be concave radially outward from the axial center, the locking path is formed to be concave radially outward from the axial center, and the entry path and the locking path may be arranged orthogonally.

The inner cap may include a protrusion protruding convexly upward; An annular flange extending radially outward from the protrusion; A hole formed through the flange; And a locking portion protruding radially outward from an outer edge of the flange.

First, in the present invention, after the locking part of the inner cap is inserted into the body through the entry path and the locking path formed on the inner surface of the body, the inner cap is locked and fixed inside the body, thus preventing the inner cap from being separated from the body. In addition, there is an advantage of reducing defects in the gas injection process through this.

Second, in the present invention, since the inner cap can be inserted into the neck only when the plurality of locking portions enter the plurality of entry passes, the gap between the inner side of the neck and the inner cap can be minimized, and leakage during the gas injection process can be minimized. There is an advantage that can be minimized.

Third, the present invention has an advantage of preventing the inner cap from being unintentionally moved through the entrance of the body, since the plurality of locking projections can be moved to the locking path only after being rotated after being inserted into the entry path.

Fourth, according to the present invention, since the plurality of locking flanges are in close contact with each side of the locking path and are fitted, there is an advantage of minimizing clearance and securing airtightness when the inner cap is assembled to the neck.

1 is a flowchart illustrating a method of manufacturing a gas injection cartridge according to a first embodiment of the present invention.
2 is a view showing a bar material (K) and a cut bar material (P) in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention.
3 is an exemplary view showing a molding process of a bar material (P) cut in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention.
4 is an exemplary view showing a forming process of a neck in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention.
5 is an exemplary view showing a process of forming an edge hole in a method of manufacturing a gas injection cartridge according to the first embodiment of the present invention.
6 is an exploded perspective view before molding of the gas injection cartridge according to the first embodiment of the present invention.
7 is an exemplary view showing an inlet molding process in the gas injection cartridge according to the first embodiment of the present invention.
8 is a front cross-sectional view of a gas injection cartridge according to a first embodiment of the present invention.
9 is an exploded perspective view before molding of a gas injection cartridge according to a second embodiment of the present invention.
10 is a front cross-sectional view of a gas injection cartridge according to a second embodiment of the present invention after molding.
11 is a front cross-sectional view of a gas injection cartridge according to a third embodiment of the present invention.
12 is a partially enlarged view of FIG. 11.
13 is a perspective view of the inner cap shown in FIG. 11.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and are common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

1 is a process flow chart showing a method of manufacturing a gas injection cartridge according to a first embodiment of the present invention, and FIG. 2 is a bar material (K) and cutting in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention. Figure 3 is a view showing the bar material (P), Figure 3 is an exemplary view showing the molding process of the bar material (P) cut in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention, Figure 4 An exemplary view showing a neck forming process in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention, and FIG. 5 is the molding of the edge hole in the manufacturing method of the gas injection cartridge according to the first embodiment of the present invention. An exemplary view showing the process, Figure 6 is an exploded perspective view before molding of the gas injection cartridge according to the first embodiment of the present invention, Figure 7 is the entrance molding in the gas injection cartridge according to the first embodiment of the present invention An exemplary view showing a process, and FIG. 8 is a front cross-sectional view of a gas injection cartridge according to the first embodiment of the present invention.

The method of manufacturing a gas injection cartridge according to an embodiment of the present invention includes l step (S1) of forming a body 100 with a closed lower portion and an open upper portion by rolling a central portion of the cut bar with a press, and the body 100 The second step (S2) of forming the neck 120 so that the inlet diameter of) is small, and the third step of forming an edge hole 140 by expanding the inner diameter of the inlet 124 of the axially piped neck 120 (S3) and the fourth step of inserting the inner cap 200 into the edge hole 140 (S4), and after inserting the body 100 into the gas injector, any one of N20, CO2 or 02 gas is injected. Then, it includes a fifth step (S5) of compressing and sealing the inlet.

[Step 1 (Sl)]

The bar material K is a metal material such as cylindrical aluminum or a copper-zinc alloy, and may be preferably an aluminum material.

As shown in (a) and (b) of Figure 2, the diameter of the bar material (K) may be 17.8 mm, and cut it by 14.6 mm in length to make a cut bar material (P).

If the sharp edges of the cut bar P are polished and finished, the outer surfaces of the cartridge body may be prevented from being scratched during the subsequent process.

Further, it is preferable to annealing the cut bar material (P), and the annealing operation is a heat treatment in which the metal material is heated to an appropriate temperature and then gradually cooled to room temperature.

This heat treatment can improve ductility by removing internal residual stress of the hardened material by movable or quenching and miniaturizing grains.

As shown in (c) of FIG. 3, the center of the cut bar (P) can be rolled with a press to form a body 100 having a hollow upper side as shown in (d) of FIG. .

The front cross-section of the body 100 may be U-shaped.

Depending on the standard, the length of the U-shaped tube can be adjusted to 65mm by partially cutting the top surface.

[Step 2 (S2)]

The diameter of the neck 120 by inserting the inlet 124 of the body 100 made by the first step (Sl) into the mold T through the molding as shown in (e) and (f) of FIG. 4 Shaft tube molding can be done to make it smaller.

This shaft tube molding is formed by reducing the diameter of the neck 120 to approximately 1/2 of the diameter of the body 100, for example, the diameter of the neck 120 may be 8.4mm.

The gas injection cartridge manufacturing method according to the present embodiment further includes the step of heating the body 100 to 350° C. and then rapidly cooling the body 100 before the third step (S3) of cutting the edge hole after forming the shaft in the second step (S2). It can, and through this, it is possible to improve the surface hardness of the body 100.

[Step 3 (S3)]

As shown in FIG. 5, an edge hole 140 having an inner diameter larger than the inner diameter of the neck 120 may be manufactured by cutting the inner side of the inlet 124 of the neck 120 formed in step 2 (S2).

The edge hole 140 is formed on the inlet 124 side of the neck 120.

A portion of the neck 120 whose inner diameter is increased through cutting molding is defined as an edge hole 140.

An uncut inner space of the neck 120 is defined as a neck hole 122, and the edge hole 140 is disposed outside the neck hole 122.

When distinction is required, a portion of the neck 120 in which the edge hole 140 is formed is defined as an edge portion 122.

The neck hole 122 and the edge hole 140 communicate with each other.

At the boundary between the neck hole 122 and the edge hole 140, an end 142 due to a change in inner diameter is formed.

Unlike the present embodiment, the neck 120 may be plastically processed instead of cutting the neck 120 to form the edge hole 140.

[Step 4 (S4)]

6 is an exploded perspective view of a cartridge manufactured by the present invention.

The inner cap 200 may be manufactured by molding a circular plate.

The inner cap 200 has a protrusion 220 protruding in a circular convex shape at the center, an annular flange 240 extending radially outward from the protrusion 220, and formed to penetrate through the flange 240. It includes a hole 242.

The upper end 221 of the protrusion 220 may be formed flat. The side surface of the protrusion 220 may be formed to be inclined, and the diameter may be increased as it approaches the flange 240.

When viewed from a side view, the protrusion 220 may have a truncated cone shape.

The flange 240 may be formed to be inclined downward. Unlike this embodiment, the flange 240 may be formed flat.

When viewed from a top view, the flange 240 may have a ring shape.

Gas may flow through the hole 242, and gas injection and discharge may be performed.

The edge of the flange 240 may be supported on the end 142.

The hole 242 may be disposed above the end 142. The hole 242 may be disposed within the width of the end 142.

[Step 5 (S5)]

When the gas is injected, the gas is pressurized from the upper side of the inner cap 200, and the gas may flow toward the neck hole 122 through the hole 242.

After the gas injection is completed, the hole 242 may be brought into close contact with the end 142 by pressing the inner cap 200, and leakage of gas may be temporarily prevented through this.

After inserting the body into a gas injector (not shown), any one of N20, CO2, and 02 at -15°C to -25°C and 20 to 30 bar may be injected through the inlet 124.

As shown in FIG. 7, after gas injection, the edge portion 122 of the body 100 is compressed to form the end 125 of the edge portion 122 in close contact with the outer surface of the protrusion 220. , Through this, the inner cap 200 may be sealed.

A total of 8 g of gas may be injected into the body 100, and most of the injected gas may be in a liquefied state, some may be in a gaseous state, and gas-liquid separation inside the body 100 reaches an equilibrium state. .

It may further include polishing the surface of the cartridge completed by step 5 (S5). For example, the polishing of the surface may be performed by inserting a gas-injected cartridge into the beads to give it a glossiness.

After step 5 (S5), it may further include the step of testing gas leakage by putting the finished cartridge in hot water. In other words, if you put the finished cartridge in hot water of 50-70°C, the internal pressure of the gas rises, so gas leakage or the container may expand or explode, so it is tested to see if it can withstand it.

After the gas leak test, the cartridge can be taken out of water, dehydrated and dried, and then inspected and packaged.

During the molding process, the end 125 must be firmly attached to the protrusion 220 to prevent leakage of gas stored in the body.

In this embodiment, leakage of gas can be prevented even when the end 125 and the protrusion 220 are slightly loosely attached through mutual engagement or fitting of the inner cap 200 and the body 100, thereby preventing the product from leaking. Defects can be minimized.

In particular, even if the end 125 and the protrusion 220 are firmly adhered to each other, gas leakage may occur when an external shock is applied. In this embodiment, the inner cap 200 and the body 100 are interlocked or inserted. Combining can minimize this.

In addition, even when the cartridge is mounted and used, since the inner cap 200 and the body 100 are mutually engaged or fitted, it is possible to minimize leakage of the stored gas to an unintended place.

9 is an exploded perspective view before molding of the gas injection cartridge according to the second embodiment of the present invention, and FIG. 10 is a front cross-sectional view after molding the gas injection cartridge according to the second embodiment of the present invention.

Unlike the first embodiment, the gas injection cartridge 2 according to the present embodiment prevents separation of the entrance path 145 into which the inner cap 200 is inserted into the body 100 and the inner cap 200 It further includes a locking path (146).

The entry path 145 is formed on the inner surface 121 of the neck 120.

The entry path 145 may be formed in the length direction of the neck 120.

The entry path 145 may be formed to extend inward from the inlet 124.

In this embodiment, the entry path 145 is formed in a straight line.

A plurality of entry paths 145 may be arranged.

The entry path 145 has a groove shape that is concave from the inner surface 121 toward the outer surface.

As viewed from the top view, in this embodiment, three entry paths 145 are radially arranged based on the axial center of the body 100.

The grooves forming the plurality of entry paths 145 are disposed toward the axial center of the body 100.

The body 100 further includes a locking path 146 connected to the entry path 145.

The locking path 146 is disposed to intersect with the entry path 145.

The locking path 146 may be formed in the shape of a groove that is concave radially outward from the center of the axis.

The locking path 146 may be formed to extend along the inner surface 121.

The locking path 146 may be arranged in a ring shape based on the axis center.

In this embodiment, the locking path 146 is formed to connect all of the plurality of entry paths 145. Unlike the present embodiment, an individual locking path 146 may be formed for each entry path 145.

The locking path 146 is formed orthogonal to the length direction of the entry path 145. The outer edge of the inner cap 200 may be caught and fixed to the locking path 146.

The inner cap 200 may further include a locking portion protruding outward in the radial direction. In the present embodiment, the locking portion is a locking protrusion 245 in the shape of a protrusion.

The locking protrusion 245 may be inserted into the neck portion 120 through the entry path 145 and then rotated to be locked to the locking path 146.

In this embodiment, the number of the locking protrusions 245 corresponds to the number of the entry paths 145. When viewed from a top view, three of the locking protrusions 245 are radially arranged based on the axial center of the body 100.

The locking protrusion 245 is disposed to further protrude radially outward from the outer edge of the flange 240 of the inner cap 200.

When the inner cap 200 is assembled with the neck portion 120, the locking protrusion 245 forms mutually engaging the locking path 146 with respect to the direction of entry or separation of the inner cap, so that the There is an advantage of preventing the inner cap 200 from being moved or separated from the original position.

Hereinafter, since the remaining configurations are similar to those of the first embodiment, detailed descriptions are omitted.

11 is a front cross-sectional view of a gas injection cartridge according to a third embodiment of the present invention, FIG. 12 is a partially enlarged view of FIG. 11, and FIG. 13 is a perspective view of the inner cap shown in FIG.

Unlike the second embodiment, the gas injection cartridge according to the present embodiment has a different shape of the inner cap 200 ′.

In the inner cap 200 ′ according to the present embodiment, the inner cap 200 ′ may include a locking portion formed such that the outer edge of the flange 240 is rolled toward the axis center (CC). The locking part is a locking flange 250.

In the inner cap 200 ′ according to the present exemplary embodiment, the locking flange 250 may be formed only on a part of the outer edge of the flange 240.

Specifically, the locking flange 250 may be disposed only in a portion where the locking protrusion 245 of the second embodiment is disposed.

Unlike the present embodiment, the locking flange 250 may be formed on the entire outer edge of the flange 240.

A plurality of the locking flanges 250 may be disposed, and each of the locking flanges 250 may be radially disposed with respect to the axial center C-C.

The hole 242 may be disposed between the two locking flanges 250.

The locking flange 250 includes a first locking flange 251 extending radially outward from the flange 240, a second locking flange 252 extending upward from the first locking flange 251, And a third locking flange 253 extending radially inward from the second locking flange 252.

Extension directions of the first and second locking flanges 251 and 252 may be disposed to cross each other. The extending directions of the second and third locking flanges 252 and 253 may be disposed to cross each other. Extension directions of the first and third locking flanges 251 and 253 may be parallel.

The locking flange 250 may have a "C" shape.

A buffer space 255 surrounded by the first locking flange 251, the second locking flange 252 and the third locking flange 253 may be formed, and the buffer space 255 is the axis center (CC) It is placed facing toward.

When viewed from a top view, the buffer space 255 may have a ring shape.

In the absence of the buffer space 255, the locking flange 250 may not be completely inserted into the locking path 146 due to a processing error.

In this embodiment, since the buffer space 255 is provided, the first locking flange 251, the second locking flange 252, and the third locking flange 253 can be elastically deformed or plastic deformed, through which The locking flange 250 may be easily inserted and positioned into the locking path 146, and may be in close contact with the neck 120.

The end side of the third locking flange 253 may be disposed toward the axis center (C-C) direction.

The locking flange 250 may be inserted into and fixed to the locking path 146.

The locking path 146 includes a first locking surface 146a disposed upward, a second locking surface 146b connected to the first locking surface 146a and formed in a vertical direction, and the second locking surface It is connected to (146b), and includes a third locking surface (146c) disposed downward.

The first locking flange 251 may be supported by being in close contact with the first locking surface 146a. The second locking flange 252 may be supported by being in close contact with the second locking surface 146b. The third locking flange 253 may be supported by being in close contact with the third locking surface 146c.

Since the locking flange 250 is in close contact with and fitted to each side of the locking path 146, the clearance can be minimized when the inner cap 200' is assembled to the neck 120 and airtightness can be secured. There is an advantage to be able to.

Hereinafter, since the remaining configurations are similar to those of the second embodiment, detailed descriptions are omitted.

Those of ordinary skill in the art to which the present invention pertains will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects. The scope of the present invention is indicated by the scope of the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. It must be interpreted.

100: body 120: neck
140: edge hole 200: inner cap
220: protrusion 240: flange
242: Hall

Claims (5)

A body with an open top;
An inner cap inserted into the opened body; Including,
The inner cap,
A protrusion protruding convexly upward;
An annular flange extending radially outward from the protrusion;
A hole formed through the flange; And
A locking portion protruding radially outward from an outer edge of the flange; Including,
The body,
A neck disposed on the upper side of the body, communicating with the inside of the body, and including an inlet formed smaller than a diameter of the body;
An entry path formed by extending vertically along the inner side of the neck; And
A locking path formed to be concave radially outwardly on the inner side of the neck and disposed to intersect with the entry path; Including,
The locking part,
A first locking surface disposed upwardly; A second locking surface connected to the first locking surface and formed in a vertical direction; Includes; a third locking surface connected to the second locking surface and disposed toward the lower side,
The locking flange is
A first locking flange extending radially outward from the flange; A second locking flange extending upward from the first locking flange; A third locking flange extending radially inward from the second locking flange; And a buffer space surrounded by the first locking flange, the second locking flange and the third locking flange, and formed concave outward in the radial direction,
The first locking flange is supported on the first locking surface,
The second locking flange is supported on the second locking surface,
Characterized in that the third locking flange is supported on the third locking surface,
Cartridge for gas injection.
The method according to claim 1,
A plurality of entrance passes are arranged,
The plurality of entrance passes are arranged radially with respect to the axial center of the body,
Cartridge for gas injection.
The method according to claim 2,
The locking path is arranged to connect a plurality of the entry paths,
Cartridge for gas injection.
The method according to claim 2,
The entry path is formed to be concave radially outward from the center of the axis,
The locking path is formed to be concave radially outward from the center of the axis,
The entry path and the engaging path are arranged orthogonally,
Cartridge for gas injection. delete

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