JPS6228358B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Technical Field of the Invention The present invention relates to a valve for sealing a container for a pressurized fluid, particularly a gas in a liquid phase and/or a gas phase. This invention relates to improvements in valves that can be removed or filled.

This tube-opening valve device is particularly intended for use in gas cartridges or aerosol containers.

B. Prior Art As shown in FIG. 6, French Patent No. 1258284 discloses (a) a metal valve seat 22 disposed in the upper part 21 of the container, and (b) a sealing bonding material 23 disposed. (c) sealing valve members 23, 24 made of a metal dish-shaped member 24 and attached so as to elastically contact the valve seat;
an elastic metal member 25 forming a spring having a fixed part connected to the melter wall and a movable part supporting the valve member and pressing this valve member (more precisely, its sealing joint) against the metal valve seat; A tube-inserted open valve device is described.

Since such a valve device is movable only in a vertical plane that includes the axial direction of the container and only through a very limited amount of displacement, it is not possible to deeply insert the valve opening tube. Moreover, the valve members 23, 24 and the elastic metal member 25 are fixed and cannot move relative to each other. Therefore, if the valve opening tube is accidentally inserted too deeply, the elastic metal member 25 will be damaged, making it impossible to close the valve. Furthermore, the joint portion between the dish-shaped member 24 and the elastic metal member 25 and the elastic metal member 2
There are doubts about the durability of the joint between No. 5 and the container wall.

C. SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple and reliable valve system that overcomes the above-mentioned drawbacks of conventional valve systems.

In the valve device of the present invention, (a) a blind hole is provided in the surface of the movable valve member opposite to the passage-closing surface and extends toward the passage-closing surface, and (b) the movable end of the spring is arranged concentrically with the passage. (c) the spring is deformable by means of a single wire having a substantially circular cross-section through its bent intermediate portion; Configure.

Such a configuration allows the valve member to be arbitrarily displaced laterally with respect to the passageway when the tube is inserted into the passageway.

That is, the configurations a, b, and c above allow the valve member to move not only in the axial direction but also in the radial direction, and furthermore, the valve member can be tilted nearly vertically. Therefore, even if the tube is inserted deep past the valve member into the bottom of the container, the valve member and the spring will not be damaged. If the tube can be inserted deeply, the stability of the connection between the tube and the melter will increase and it will be advantageous for the removal of gas from the container.

D Description of Embodiments Embodiments of the valve device of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, a valve device 1 according to the present invention includes:
It is provided in a central opening 2a of a metal countersunk cap 2 of a container 3, a portion of which is shown by a chain line.

The cap 2 is formed with a circular recess 2b. A hole 2a is formed in the middle part of the inlet part 2b. The hole 2a is partitioned by a rolled edge 2c.
The winding 2c is located below the horizontal bottom 2d of the cap 2.

A valve seat 4 formed of a resilient material such as a synthetic or natural elastomer is connected to the opening 2a of the cap 2.
It is installed so that it has internal stress. The valve seat 4 is
It is provided with a cylindrical portion 4a having a concave upper surface. A peripheral groove 4b is formed within the cylindrical portion 4a. The bottom of the valve seat 4 forms a cylindrical base 4c with a diameter larger than the diameter of the cylindrical portion 4a. Note that a vertical slot 4d is formed in the center of the valve seat 4.

To securely mount the valve seat 4 within the opening 2a of the cap, the rolled edge 2c of the opening 2a is fluid-tightly engaged with the groove 4c of the valve seat 4, and the cylindrical base 4c of the valve seat 4 is fitted into the rolled edge 2c. Place it in close contact with the inner lower surface of the

Other parts constituting the valve device of the present invention are a valve member 5 elastically applied to the valve agent 4 and a spring 6 acting on this valve member.

The spring 6 is formed of a strip of circular cross-section and has an open upper annular portion 6a suitable for resiliently mounting inside the wrapper 2c as shown in FIG. A short horizontal portion 6b extends from one of both ends of the annular portion 6a. A downwardly directed first branch portion 6c follows the portion 6b. Branch part 6
At least one ring 6d is formed at the end of c. A second horizontal section 6e follows the ring 6d. The branch portion 6e has a short end portion 6f in the rigid direction whose axis is aligned with the annular portion 6a.

Such a spring can be highly deformed so as to be able to move the valve member 5 axially and radially relative to the valve seat 4. This is extremely advantageous since losses in the gas flow head are virtually eliminated, as will be discussed in more detail below. Furthermore, by such movement of the valve member by the spring, gas can be extracted in the gas or liquid phase even when the container is in an inverted position. The radial equal resistance of the wire constituting the spring ensures the axial alignment of the valve member with respect to the valve seat. The spring may have other shapes as long as it allows axial and radial movement of the valve member.

The valve member 5 formed in the shape of a circular plate has a central portion 5f that acts as a support surface for the outlet pipe 7 (FIG. 4) and a portion that slightly protrudes from the central portion 5f to ensure that the valve member 5 is firmly attached to the valve seat 4. and a sealing peripheral lip 5c. The central portion 5f has an upper surface 5a uniformly formed with narrow grooves 5b having rectangular contours oriented parallel to each other. Slot hole 4d of valve seat 4
There is no need to form a side hole in the take-out tube 7 to be pushed inside. This is because the gas can flow through each groove of the valve member 5 to the bottom opening of the tube 7, or vice versa in the case of filling.

The grooved central portion 5f of the valve member 5
It has a diameter considerably larger than that of the tube 7 so that the normal operation of the valve device is not affected by eccentricity that may occur during the collision and further movement of the valve device. A peripheral lip 5c has a pointed arch-shaped cross section that slightly protrudes upward from the upper surface 5a and gradually becomes thicker downward.
(FIG. 1) thus forms a large circular edge that contacts the underside of the valve seat 4.

In this way, even though the valve member 5 has a relatively large surface area, it is possible to maintain a large specific pressure against the valve seat 4.

A blind hole 5d is formed in the center of the valve member 5.
An end portion 6f of the spring 6 is attached with some play within the blind hole 5d. The hole 5d has a radially expanding portion 5e below it. This provides a ball bearing effect in which the valve member 5 and the valve seat 4 can freely cooperate with each other. Furthermore, when the tube 7, which also serves as a filling port, is pushed downward into the slot 4d, the action of the lower end of the tube 7 against the upper surface 5a of the valve member 5 causes the valve member 5 to be pushed so that most of the end opening of the tube 7 is pushed downward. It can be tilted sufficiently diagonally from the horizontal to expose it. This significantly reduces losses in the fill gas head, as mentioned above.

FIG. 5 shows a preferred modification of the valve seat of the valve device according to the invention. This valve element 8, made of a synthetic or natural elastomer, has a rounded head 10 on a base 9 formed similarly to the base 4c of the valve seat 4 described above. A groove 11 is formed at the joint between these two parts to receive the rolled edge 2c of the cap 2 in a sealed manner. The head 10, which has a slightly smaller diameter than the base 9, has a central longitudinal slot 12 for passing the tube 7 and thus constitutes a kind of annular body.

The groove 12 is a tulip 1 that expands upward.
It is formed in the shape of 2a. The lower part of the tube 12a is a trapezoidal conical part 1 that opens downward.
It has a narrow portion 12b leading to the bottom consisting of 2c. Thus, when the tube 7 passes through the slot 12, the narrow portion 12b of the slot 12 expands and its reaction forces the periphery of the tube 7 to act as an O-ring and improve the seal.

E. Effects of the Invention As described above, according to the present invention, it is possible to deeply insert the pipe beyond the valve device into the interior of the container without damaging the valve member or the spring. Furthermore, the structure is simple and does not require the use of expensive parts. The parts are easy to assemble and a reliable seal can be achieved without the need for precise adjustments.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one embodiment of the valve device of the present invention in a closed position, FIG. 2 is a perspective view of a spring acting on the valve member of the valve device of FIG. 1, and FIG. 3 is a view similar to that shown in FIG. FIG. 3 is an enlarged cross-sectional view of the central portion of the valve member of FIG. 4 is a cross-sectional view of the valve device of FIG. 1 in the open position; FIG. 5 is a cross-sectional view of a modified valve seat of the valve device of the present invention; and FIG. 6 is a cross-sectional view of a valve device according to the prior art. It is a diagram. 1... Valve device, 2... Cap, 3... Container,
4... Valve seat, 5... Valve member, 6... Spring, 6a...
...Annular part of the spring, 6c...branch part of the spring.

Claims (1)

[Scope of Claims] 1. A valve device that can be opened by inserting a pipe 7, which includes (a) a valve seat support member 2 having a hole 2a, and (b) a through passage 4d extending in the axial direction and this valve device. (c) a valve seat 4 having an inward facing seat surface extending around the passageway and mounted on the valve seat support member so as to close the hole; a movable valve member 5 having a tightly closing surface 5a; (d) a first end 6b fixed to said valve seat and said valve seat support member and at least inward from said seat surface to said valve seat; a spring 6 having a second end 6f movable in a direction away from the valve member and serving as the sole means for freely aligning or deflecting the valve member with respect to the seating surface; (a) a blind hole 5d is provided in a surface of the movable valve member opposite to the passage closing surface, the blind hole 5d extending toward the passage closing surface, and (b) the second end of the spring is arranged concentrically with the passage. (c) making the spring deformable by means of a single wire of substantially circular cross-section through its bent intermediate portion 6d; The valve device is characterized in that when the tube is inserted into the passageway, the valve member can be displaced laterally in any radial direction with respect to the passageway. 2 The valve seat is made of an elastic body with a base located inside the hole and one side serving as a seat surface, and the passage is cylindrical and has a diameter smaller than the pipe diameter. The valve device described. 3. The elastic body has a round head on the side opposite to the base of the hole, and the passage passing through the valve seat has a portion 12a that widens outward in the axial direction and a portion 1 that narrows inward in the axial direction.
2b, so that sealing is achieved when the tube is inserted. 4 A central portion 5f facing the seat surface on the valve member,
A peripheral lip portion 5c is provided surrounding the central portion 5f, protruding from the central portion 5f, and abutting the seat surface.
The valve device according to item 1 above. 5. The valve device according to item 4 above, wherein the central portion 5f has a surface 5a formed with fine and uniform grooves that acts to come into contact with the pipe when inserted. 6. The valve device according to item 4 above, wherein the peripheral lip-like portion has a pointed cross-section that becomes an edge that comes into contact with the seat surface. 7 The diameter of the blind hole 5d of the valve member is made larger than the diameter of the spring, and the second end of the spring that engages with the blind hole is spaced in the radial direction of the hole to form a ball bearing-shaped engagement, as described in 1 above. valve device. 8. The valve device according to item 1, wherein a ring portion is provided in the intermediate portion 6d between the first end and the second end of the spring.