JPS62124396A - Liquefied gas cartridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A1 Technical Field of the Invention The present invention relates to a disposable C-type liquefied gas cartridge.

B. Prior Art French Patent Application No. FT No. 1,133,075 describes a liquefied gas extraction device with the following 1Z'+=j'fi.

(i) The liquefied gas cartridge used is a closed can with a cylindrical lower part and a convex upper part, with a cup-shaped depression having a round cross section in the center of the convex top wall.

(ii) A bell-shaped dot 75 is used as a support for at least a portion of the top wall of the cartridge, including the central portion, and the support is pivoted as an auxiliary connecting member for retaining the cartridge within the support. Use a loose elastic clip.

(iii) As an annular dense 1j member, it can slide in the axial direction with respect to the gas extraction head and can be lowered by the elastic part (-spring).
A tubular bush rod with a ring-shaped honeymoon gasket 1~ is used at the end of the white mountain.

(iv) As a gas extraction member in the axial direction, a tubular bushing 1 fixed to the head is located inside the circular honeymoon gasket 1 in the central part (cup part) of the cartridge. Use the drilled hole ♀).

The specification of French Patent No. 1,295,539 describes the use of an auxiliary connection part (4) for connecting the cartridge to the bell-shaped support, and the use of a stylus-shaped member (8 omitted) in the support body. ing.

French special edition No. 1.169.193sd3 and same No. 1.50
3,773; similar auxiliary connections (Δ
It is described to use a t-section cover separate from the support 1.5, which is held on the rim of the lower part of the support by a net mechanism.

All of these devices include two transversely elastic metal strips forming springs that rest against the recessed bottom of the cartridge or against the protruding top of the cartridge. The elastic strip is in some cases from the central part of the bayonet lower cover (French Special Edition No. 1.169.193) and in some cases by a support with a threaded ring into which the gas extraction head is screwed. From the central part of the body, they each diverge obliquely and in each case exert an axial pressure on the cartridge, thus pressing it against the support or auxiliary connecting member. The cartridge is thus held axially within the support before or after screwing the gas extraction head on. At this time, some friction exists between the cartridge and the support or the auxiliary connecting member.

For reasons of supplementation, the above-mentioned elastic strips have been difficult to employ in practice, especially because of cost. This is because it is not inconvenient for the user to connect and remove the gas extraction head and the cartridge even if there is no one strip per bullet.

However, in order to guarantee maximum safety for users of devices with this bell-shaped support, it is necessary to use extreme conditions such as keeping the gasket 1~ pressed against the cartridge for a very long time. It is also necessary to take into consideration the case where the sealing gasket 1- sticks to the cup part of the cylinder.Especially when unscrewing the gas outlet head in a device that does not have an elastic strip, it is necessary to take into consideration the case where the sealing force is It may remain on the cartridge top wall -F away from the free end of the push color.

In this case, removing a used, empty cartridge is equally problematic, but removing a new, filled cartridge is problematic. When actually screwing in the gas extraction head and making a hole ( ) in the cup part of a new cartridge, the user will not be able to seal it unless the user confirms the presence of the annular honeymoon gasket 1- on the tubular bushing rod in advance. There is a risk of creating a hole.

C: ¥? An object of the present invention is to solve the above-mentioned problem of attaching the seal to the cartridge without causing compound interest in the device. .

Naturally, in achieving this objective, it is necessary to avoid changing the connection method of the gas extraction head or introducing major changes in the entire gas extraction and use device and the manufacturing method of the cartridge.

D1 Overview and Structure of the Invention The present invention provides an engaging member that suppresses relative rotational movement between the support and the cartridge, and thereby exerts a shearing force between the sealing gasket and the cartridge to close the sealing gasket. 1 - Separates the cartridge from the cartridge.

In other words, the present invention is an apparatus for extracting and using liquefied gas contained in a disposable cartridge having a cylindrical side wall and a dome-shaped top wall, the gas extracting means comprising at least (a) the dome-shaped cartridge; a support member that fits at least a central portion of the top wall; (a) an annular elastic sealing portion (A and the (c) a gas extraction head that can be screwed into the center of the support, having an axially arranged gas extraction member that acts on the inside; a member that assists the support and holds the car 1-ridge; By actively installing one part of the engaging part fJ consisting of interlocking parts into a support body, the other part of the engaging part H is set up so that it engages with the cartridge. From the support that holds the gas take-off head, screw the gas take-off head to four screws, suppressing the relative rotational movement between the support and the car ridge.
J which acts as a shearing force in a direction transverse to the axial direction between the elastic density member and the cartridge.
In order to cooperate with the liquefied gas using device, the top wall is shaped to be covered by the gas extraction head support of the device, and cooperates with the interlocking member portion disposed on the support. Provided is a portable liquefied gas car 1 to 1, having a cylindrical side wall and a dome-shaped top wall, characterized in that an engaging member portion constituting a positive engaging member is provided around the axis of the cartridge. .

The following specific example is preferable as a specific example of the configuration of the present invention.

(i) The central portion of the cartridge top wall covered by the support may have a similar shape or a different shape from the remaining top wall portion. In the latter case, the central part against which the annular sealing member sealingly rests may be in the form of a circular head projecting from the cartridge with an inverted side profile and forming a shoulder in diametrical section, or a cylinder provided in the center of the cartridge. Shape [Fixed to 1 gold, the center boss is pressed or unpressed into a V-shaped shape.

(ii) The cartridge may be provided with a gas intake valve, such as a knee valve, in the center of the top wall, for example in the form of the above-mentioned 1X7 valve. Not provided. In the case of the song name, the gas extraction member is constituted by a push rod valve, and in the latter case, the piercing member is constituted by a tubular needle or a pointed needle.
Ru.

[1 Effects of the Invention] Due to the above-mentioned structure (14) of the present invention, the relative rotational movement of the cartridge and the support body (regardless of their relative angular positions) is suppressed. In other words, the gas extraction head When unscrewed, the sealing gasket is subjected to a twist of varying magnitude depending on the strength of the rotational friction between the tubular bushing rod and the gas outlet head hole that receives the bushing rod.

Since the cartridge is immobile in the rotational direction, a shearing force is always applied to the annular gasket l~ in a direction transverse to the axial direction. This μ shear force creates or facilitates separation from the cartridge top wall.

Furthermore, the above configuration of the present invention provides the following advantages (
J is done.

(i) Take the hole C↑1 ((When connecting the girder gas outlet head and the car 1 helicopter, the nail relative to the fixed cartridge and the rotation of the gas outlet head make the circular shape The hole is forced open, thus ensuring a gas passage of narrow dimensions between εI and the edge of this hole.However, when the annular sealing gasket and the cup of the cartridge are in contact -C If the cartridge undergoes rotational movement due to the rotational movement of the gas extraction head, this forced dissection effect cannot necessarily be obtained.

(ii) The positive interlocking member of the invention around the common axis of the support and the cartridge ensures that the alignment of the two is covered. Therefore, there is no large offlet between the cartridge and the support, and the sealing action between the sealing gasket and the cartridge is further enhanced, improving safety.

F. Description of Embodiments Hereinafter, embodiments of the cartridge of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the lower part of a pressurized liquefied gas extraction device (1) with a gas extraction head (2) as described in French Patent No. 1,133,075. . The head (2) is equipped with a tubular bushing rod (3) and a fixed piercing needle (4). Butshu'L [,1tsudo(
3) is vertically movable relative to the axial hole (2a) of the head (2). An annular gas get (5) surrounding the bush rod (3) connects the bush "-" to the hole (2).
a) to ensure a tight seal between the Bush Rod (3
) is biased downward by a compression spring piece (6). The free end of the bushing rod (3) is provided with a 1jlj part (7) for holding an annular gasket (8).

The head (2) is provided with a support 10) for securely connecting the head (2) to the pressurized liquefied gas cartridge (11).
(9) (Second
A suitable screw (2b) is formed which cooperates with the screw (Fig.).

A bell-shaped support 1 with a cartridge (11) attached downwards.
Cover with 0). The peripheral edge portion (10a) of the support (10)
> at least partially surrounds the cartridge (11) (7) side wall (11a). Two pivoted stapes (
12>, (13) are fitted into the notch 8 (10b) formed in the horizontal flange of the support (10). Gas outlet head (2
) into the support (10) by screwing it into contact with the top of the cartridge (11).

Each stirrup member (12) as shown in Figures 3 and 4.
, (13) under the bottom of the cartridge (11), the top wall (11b> of the cartridge (11) and the support (
10) and the horizontal wall (10c). When the gas outlet head (2) is screwed into the ring member (9), there is a hole 6l-(4) that allows gas to flow in the direction of the device (1).
or drill a hole in the cartridge (11). An annular gasket (8) fitted to the head (7) of the tubular bushing rod (3) is positioned around the hole formed in the medium heat portion of the cup portion (11G) of the cartridge (11). When the head (2>) is screwed in, the gasket (8) is pressed against the cup (11G) of the top wall (11b) of the cartridge (11), forming an airtight seal.

When unscrewing the gas outlet head (2) 1, unscrew the gas outlet 1~(
8) In order to increase the shear force on the ghhl, as shown in FIG. 14
) protrudes inward from the inner surface of the hem portion (10a). Each boss (14) is arranged evenly around the 1-inch section (10a). In the case of forming the three bosses (14) shown, they are spaced apart from each other by 120° around the geometrical axis of the support (10).

In order to ensure the angular fixation by the boss (14), at least three stamps J are formed on the side wall (11a) of the cartridge (11) with a stamp deformation in the direction of the center of the rhododendron (11). A strip of longitudinal ribs (15) is formed. The orientation of each rib (15) is parallel to the geometric axis of the cartridge (11). Each rib (15) is evenly spaced around the cartridge (11). In the case shown, the ribs (15) are arranged at a distance of 120° from each other around the geometrical axis of the cartridge (11). Figure 6 (As shown, the depth of each rib (15) is the same as that of each boss (14).
or each rib (15) in association with the support (1).
0) and the cartridge (11), so as to prevent relative rotation between the boss (14) and the cartridge (11).

Each rib (15) is shown in Figure 4. J: Sea urchin cartridge (
11) to the top wall (11b). Each rib (15) also strengthens the walls of the cartridge (9), thus increasing the resistance of the cartridge (11) to crushing.

Due to the cooperation of the boss (14) and the rib (15), even if the gasket (8) is stuck to the cartridge (11), the support (10) can be removed by unscrewing the gas extraction head (2). The cartridge (11) does not rotate inside the cartridge.

In other words, the U shear force effect will always be negative.

Do not leave the device with the cartridge in it for a long period of time, e.g.
・It may be left unused for 8 months.

If the temperature is high, for example in a tropical climate, the sealing gasket (8) may stick to the cartridge (11). In such a case, the annular gaskets 1 to (5) will also stick to the bushing rod (3) and the hole (2a) of the gas outlet head (2), resulting in Gas outlet head (2)
By unscrewing the support body (10) and cartridge (11)
The cartridge (11
) does not rotate relative to the support (10), and a shear force is applied to the sealing gasket (8) due to torsion to release or release the attachment to the cartridge (11). promote.

In this way, the separation of the sealing gasket and the cartridge is accomplished or facilitated by unscrewing the gas extraction head.

Note that the support (10) may be in the shape of a dovetail, and in particular, the bent portion (10a> is the shape of the support (10a) shown in FIGS. 7, 8, and 9, respectively). , (10″) ,
(10'') may extend further below the bottom of the cartridge (11).

In this case Buddha tx+ 12i li'r 1st, 169.1
As described in Patent No. 93 and Patent No. 1,503,773, the cartridge is held by a cover (not shown) that closes the downward opening of the base portion by a bayonet mechanism. The supports of FIGS. 8 and 9, (10">, (10") each support (10") in order to center the cartricine.

(10") is provided with at least three strips (16) that fit into the grooves provided in the cartridge to properly position the cartridge.

Incidentally, an odd number of male-shaped portions and eye-shaped portions may be formed on the support body and the cartridge, respectively, or vice versa. The reason for this is that it is possible to prevent the dimensional errors of the two bosses located facing each other from being added, thereby improving the centering accuracy of the cartridge.

Although the present invention has been described above in detail with reference to its embodiments, it goes without saying that the scale rod of the present invention can be modified without departing from its spirit.

[Brief explanation of drawings]

Figure 1 is a 4111 cross-sectional view of an example of a known gas extraction head, and Figure 2 is an embodiment of the gas extraction head of the cartridge of the present invention and a gas extraction device used therein, as well as the essential parts of its cooperating support. FIG. 3 is a developed front view of the example, and is a reduced front view showing the members shown in FIG. 2 in an assembled state. Fourth
5 is an enlarged axial sectional view of the main part of FIG. 3, FIG. 5 is a bottom view of the support shown in FIG. 2, and FIG. 6 is an enlarged sectional view taken along the line Vl--Vl of FIG. 4. 7, 8 and 9 are front views of different variants of the support. 1... gas extraction) device, 2... gas extraction head,
3... Tubular push rod, 4... Punching needle (gas extraction part +U, 8... Annular gas fitting 1~(annular honeymoon part Vt>, 10... Support body, 11... Car mill ridge, 11b ...Top wall, 11G...Cup part (center part), 12, 13...Stirrup shaped part +A (auxiliary holding part (A), 14...Boss (male shaped piece), 15... ·rib(
(female piece).

Claims (4)

[Claims] (1) A disposable liquefied gas cartridge having a cylindrical side wall and a dome-shaped top wall, in order to take out and use the liquefied gas contained in the cartridge, at least (a) the cartridge ( (11) a support (10) covering at least the central portion (11c) of the dome-shaped top wall (11b) of the cartridge (11); and (b) the dome-shaped top wall (11b) of the cartridge (11).
an annular elastic sealing member (8) that can airtightly abut on the central portion (11c) of the housing, and a gas extraction member (4) arranged in the axial direction that acts inside the elastic sealing member (8).
(c) When the gas extraction head (2) is screwed into the support (10), a cartridge (11) is formed.
The support (1) serves to hold the inside of the support (10).
0) to hold the cartridge (11) (
12) (13); and a positively interlocking portion (14) located about a common axis of the support (10) and the cartridge (11).
) (15).
) is provided on the support (10) to engage and hold the cartridge (11) provided with the other part (15) of the interlocking members (14, 15). When unscrewing the gas extraction head (2) from the support (10) that is ) is applied to the elastic sealing member (8) and the cartridge (11).
) so as to effectively act as a transverse shearing force between a mating member part (14, 15) which is shaped to be covered and which cooperates with a mating member part (14) arranged on the support (10) to constitute a positive mating member (14, 15);
15) is provided around the axis of the cartridge (11). (2) Three positive interlocking members (14, 15) (1
4, 15) At least a portion of (14, 15) (15)
The cartridge according to claim (1), wherein the cartridge is provided with: (3) As interlocking members (14) and (15), the male-shaped piece (15) arranged on the cartridge (11) and the male-shaped piece (14) arranged on the support (10) or vice versa; Cartridge according to claim 2, characterized in that it is provided with an arrangement of these parts (14) and (15). (4) Cartridge (11) as female shaped piece (15)
Cartridge according to claim 3, characterized in that the cartridge is provided with an axial groove (15) extending from the side wall (11a) to the top wall (11b).