JPH0353703Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an injection device for an aerosol container, which is installed on the end face of the container on the side of the valve component, operates the valve device, and injects a pressurized substance from the container through the valve device.

Various devices for operating the valve rods of injection valve devices have been invented and devised, and although each device satisfactorily accomplishes its intended purpose, it is difficult to use it for this purpose because residue remains in the discharge channel, especially when the material is foamy. Later, it tends to leak from the outlet sealing surface, contaminating the sealing surface. Therefore, the object of the present invention is to reduce the amount of foamy substance residue remaining in the discharge channel and to prevent leakage from the sealing surface.

Hereinafter, the drawings showing the embodiment of the present invention will be described. FIG. 1 is a longitudinal cross-sectional view of the device, which is in an inactive state, and the device A is connected to an outer cylinder 2, an inner cylinder 1, and the inner cylinder 2. It consists of a fixed valve body 3 and is set and fixed on the valve component end side of the aerosol container.

The inner cylinder 1 has skirt parts 4 and 5 formed at its upper and lower ends. The skirt portion 4 at the upper end contacts and seals the circumferential surface of the inner hole 6 of the outer cylinder 2, and the skirt portion 5 at the lower end has a larger diameter than the upper one and is provided with an outwardly upwardly curved portion 5a to increase elasticity. The outer cylinder 2 is received by the outer edge 5b. The center hole 7 of the inner cylinder 1 is provided with a socket hole 7a at the lower end into which the stem 8 is fitted, and the lower end of the valve rod 3b of the valve body 3 is fitted into the upper end.
A concave groove 9 is provided on the contact surface between the center hole 7 and the valve body 3.
communicate with the side. In the illustration, the groove 9 is provided by slotting the circumferential surface of the center hole 7 in the axial direction.

The outer cylinder 2 has a cylindrical part 2a at its upper part, and the upper end skirt part 4 of the inner cylinder 1 is tightly fitted into the inner hole 6 of the outer cylinder 2 to divide the inner hole 6 into two vertically. It is received by the lower end skirt portion 5 of 1. The lower part of the outer cylinder 2 is designed to be able to widely cover the valve-forming end side of the container in which the valve device B is installed, and the fulcrum part 10 protruding from the lower end is fitted into the recessed part 11 of the end face of the container, and is locked and levered. Make it operational. Incidentally, the fulcrum portion 10 may be secured to the lower side of the wrapping portion 12 on the end face of the container to enable lever operation. Reference numeral 13 denotes an operating section formed on the lower part 12b of the outer cylinder 2 at a position opposite to the fulcrum section 10. 14 is the cylindrical part 2a of the outer cylinder 2
This is the valve seat on the top end surface. The valve body 3 is a disc-shaped valve part 3a.
A valve rod 3b of a predetermined length is formed to protrude from the center of its lower surface, and the valve rod 3b is connected and fixed to the center hole 7 of the inner cylinder 1, and the lower surface of the valve portion 3a is received on the valve seat 14 to seal the sealing portion 15. The upper chamber 6a partitioned into the internal hole 6 of the cylindrical portion 2a is sealed from the outside.

Figure 2 is a partial cross-sectional view when the device is operated.
A gap 16 is created in the sealing part 15 between the valve seat 14 and the valve part 3, so that the contents supplied from the container can be released. The gap 16 is created as soon as the outer cylinder 2 is lever-operated with the operation part 13.

As shown in Fig. 1, when the operation part 13 is operated with a lever, it is buffered by the skirt part 5 at the lower end and acts on the inner cylinder 1 and the stem 8, creating a gap 16 in the sealing part 15, and then pushing down the stem 8 and connecting it downward. Open valve device B. When the depression of the operating part 13 is stopped, the valve device B and the sealing part 15 are "closed", and the sealing part 15 is strongly maintained by the repulsive force of the skirt part 5 at the lower end. In addition, due to the structure, the skirt portion 4 at the upper end can be deformed into an elastic ring, and coil springs are interposed between the skirt portion 5 at the lower end and the end surface of the container, and further between the outer cylinder 2 and the skirt portion 5. Sometimes I let them do it.

In the present invention, the lever-operated outer cylinder is received by the elastic part of the inner cylinder 1, and when the device is stationary, the elastic part maintains the sealed part reliably and stably to prevent leakage and allow the device to operate. In some cases, it is possible to provide an injection device that can smoothly and reliably open the sealing portion prior to the valve device, and can smoothly and stably operate the “opening” and “closing” of the sealing portion.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view, and FIG. 2 is a partial sectional view. 1... Inner cylinder, 2... Outer cylinder, 3... Valve body, 4...
Upper end skirt part, 5...Lower end skirt part, 6...
Internal hole, 7...center hole, 14...valve seat.

Claims (1)

[Scope of utility model registration request] The fulcrum part 10 at the lower end of the outer cylinder 2 is lever-operably latched to the end face of the container on the valve component side, and the inner cylinder 1 connected to the stem 8 is provided in the internal hole 6 of the outer cylinder 2. The elastic skirt portion 5 at the lower end of the inner cylinder 1 is interlocked with the lower end surface, and the inner cylinder 1
A sealing part 4 that divides the internal hole 6 into upper and lower parts is provided at the upper end, and the lower end of the valve rod 3b of the valve body 3 is connected to the center hole 7 of the inner cylinder 1. An aerosol injection device that is received by a valve seat 14 on the upper end surface so as to be openable and closable.