JPH053246Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) This invention relates to an injection valve for an aerosol injection device that injects the propellant contained in a container under pressure by operating a push button, and is convenient to use. The purpose of the present invention is to provide an aerosol injection device exclusively for inverted use that can reliably prevent erroneous injection and has a simple structure that reduces production costs.

(Structure of the invention) This invention will be explained below with reference to the illustrated embodiment. Reference numeral 3 denotes a valve housing, which is fitted into the mountain cap 1 of the injection container via an elastic gasket 2. 4 is a hollow valve rod with a bottom, and is provided with a collar 41 and a side hole 42. This valve rod 4 is tightly inserted into the elastic gasket 2, and by elastically supporting a valve hakama 43 formed below the collar 41 of the valve rod 4 with a valve spring 6, the lower surface of the elastic gasket 2 and the collar 42 are elastically supported. An on-off valve is constructed by these. That is, a device in which an on-off valve is configured by the elastic gasket 2 and the valve rod 4 as described herein is known as a valve rod tilting type injection valve, and the valve rod 4, which is upright in the non-operating state, is known as a valve rod tilting type injection valve. The contents of the injection container are discharged by tilting with the tip of the finger.

In this invention, a weight 5 is loosely fitted in an annular manner to the valve sleeve 43 of the valve rod 4 in such a tilting valve rod type injection valve so as to be movable up and down. A cylindrical surface 31 is formed on the valve housing 3 and is separated from the lower circumferential surface of the weight 5 by a small gap K.

That is, the bottom surface of the elastic gasket 2 and the collar 41 of the valve rod 4 constitute an on-off valve, and therefore,
When the valve rod 4 is tilted from the inactive vertical position by operating the fingertip, the collar 41 is tilted from the horizontal position.
Therefore, a part of the periphery of the collar 41 of the valve rod 4 separates from the bottom surface of the elastic gasket 2 to open the valve.According to this invention, an annular weight 5 is attached to the valve cover 43 of the valve rod 4. is loosely fitted in a vertically movable manner, while a cylindrical surface 31 is formed on the valve housing 3 with a small gap K from the lower circumferential surface of the weight 5 when the valve rod 4 is in the inoperative position. , Even if lateral pressure is applied to the tip of the valve rod 4 when the valve rod 4 is in an upright position or a state close to this, a part of the circumferential surface of the weight engages with the cylindrical surface 31. Therefore, sideward movement of the valve sleeve 43 is prevented, and accordingly, the valve rod 4 cannot be tilted, and as a result, the above-mentioned valve opening is not performed.

However, in the inverted position as shown in FIG.
3 and the cylindrical surface 31 of the valve housing 3, it is possible to tilt the valve rod 4 by applying lateral pressure to the tip of the valve rod 4. Therefore, by tilting the valve rod 4, the above-mentioned opening/closing valve can be opened. When opened, the propellant under pressure in the container is discharged from the valve stem through the on-off valve.
If the lateral pressure applied to the tip of the valve rod 4 is released, the valve rod 4
is returned to its position by the pressure that elastically supports the valve-hakama 43, and naturally the above-mentioned on-off valve closes, stopping the discharge of the ejected material.

In addition, the reference numeral 7 shown by imaginary lines in the drawing indicates a push button that also serves as a nozzle, but in addition to this push button 7, there is also a push button at the tip of the valve rod 4 to close the nozzle opening when the valve is not in operation. Needless to say, you can attach adapters, etc.

(Effect of the invention) That is, according to the present invention, it is possible to emit a propellant only when the container is held upside down or in a similar manner, and it is possible to emit a propellant only when the container is held in an upright position. At times, there is no risk that the valve will open and erroneous injection will occur even if the valve rod touches another object due to an erroneous operation or a fall. In addition, receiving a solution in the palm of your hand is the most common method for applying a solution to the skin, and in this case, applying lateral pressure with your fingertips to the tip of an inverted container is the easiest method of operation. It is. Thus, according to this invention, it is possible to provide an injection container for cosmetics and other products that is particularly convenient and safe for daily use.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of this invention when it is not in operation, and FIG. 2 is a longitudinal cross-sectional view of an embodiment of the invention when it is in operation. 1 is a mountain cap, 2 is an elastic gasket, 3 is a valve housing, 31 is a cylindrical surface, K is a gap, 4 is a valve rod, 41 is a collar, 42 is a side hole, 43 is a valve cap, 5 is a weight, 6 is a Valve spring 7 is a push button.

Claims (1)

[Scope of utility model registration request] The valve housing 3 is fitted into the mountain cap 1 of the injection container via the elastic gasket 2, and the bottomed hollow valve rod 4, which is provided with a collar 41 and a side hole 42, is inserted tightly into the elastic gasket 2. In a valve rod tilting type injection valve in which a valve skirt 43 formed below a collar 41 is elastically supported by a valve spring 6, and an opening/closing valve is constructed by the bottom surface of an elastic gasket 2 and a collar 42, an annular weight 5 is movable up and down. The inverted aerosol jet is formed by forming a cylindrical surface 31 on the valve casing 3 that loosely fits into the valve casing 43 and is separated from the lower circumferential surface of the weight 5 by a small gap K when the valve rod 4 is in the inoperative position. valve.