JPH055978Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) This invention is an aerosol injection container in which the injection port is closed when not in operation and is opened only when a push button is pressed for injection operation. It is an injection head, and its push button is attached to the injection valve rod of a general injection container that is currently in widespread use. The purpose is to provide an injection head whose opening/closing valve mechanism is simple and easy to assemble.

(Structure of the invention) This invention will be explained below with reference to the illustrated embodiment. 1 is an injection valve rod with an injection passage 11 bored therein, and the valve casing 3 fixed to the mountain cap 4 of the container containing the injection liquid is attached vertically to the valve housing 3. It is movably inserted tightly,
The injection valve can be closed by descending, and can be closed by rising. 2 is a push button mounted on the injection valve rod 1, and is connected to the injection passage 1 of the injection valve rod.
1 is provided with an injection port 21 connected to

In the illustrated embodiment, reference numeral 12 denotes a side hole of the injection passage, and the injection valve is constituted by the elastic gasket 31 and the side hole 12.
As is well known, it is elastically supported by a spring 32 and can be moved up and down. 33 is a liquid suction pipe.

The injection head which has the above-mentioned injection valve rod 1 and push button 2 and can inject the injection liquid by pressing down the push button 2 is well known. It has a horizontal valve rod 5 elastically supported, a wedge plate 6 for transmitting driving force to the horizontal valve rod 5, and a slidable vertical wall surface 22. As shown in the figure, this horizontal valve rod 5 has a valve body 51 at its front end that can engage with the injection port 21 from inside, and a cylindrical small diameter section 55 at its rear end. This cylindrical small diameter portion 55 is a circumferential groove 5 having a cylindrical groove bottom surface 53.
It is formed by punching 2. The wedge plate 6 is provided with a bottom surface 61 which is compatible with the vertical wall surface 22 of the push button described above and which can substantially engage with a portion of the mountain cap 4 from above when the push button 2 is in the illustrated raised position. Further, the wedge plate 6 has an upward slope 62, a vertically elongated hole 63, and a guiding groove 64 to the vertically long hole 63 formed at its head.
is inserted into the vertically elongated hole 63. However, the upward slope 62 engages with the rear wall surface 54 of the circumferential groove 52, and the lower part of the longitudinal hole 63 opens into the upward slope 62. In the illustrated embodiment, 22 is a nozzle piece having an injection port 21, 56 is a spring for supporting the 5 horizontal valve rods, and 57 is a leak-preventing gasket.

This device was developed as described above, and the horizontal valve rod 5
is elastically supported forward, and a valve body 51 that can engage the injection port 21 from inside is provided at its tip, so that the injection port 21 is closed by the valve body 51 in the illustrated inactive state. . Of course, since the above-mentioned injection valve is closed, there is no liquid leakage to the outside, and at the same time, the passage of the injection liquid from the injection port 21 to the injection valve is completely isolated from the outside air, so there is no oxidation caused by the outside air, and no leakage from the outside. The intrusion of dirt and other foreign matter is prevented. A circumferential groove 52 is provided at the tail of the horizontal valve rod 5.
A cylindrical small diameter portion 5 formed by a groove bottom surface 53 of
On the other hand, the wedge plate 6 has a vertically long hole 63 and a guide groove 64 to the vertically long hole 63 formed in the head, and the small diameter part 55 of the horizontal valve rod 5 passes through the guide groove 64 and connects to the vertically long hole. It is inserted in 63. Further, the wedge plate 6 is provided with an upward slope 63 that engages with the rear wall surface 54 of the circumferential groove 52, and at the same time, a vertically elongated hole 63 into which the small diameter portion 55 is inserted is provided.
The lower part thereof opens into an upward slope 63. Furthermore, since the wedge plate 6 has a bottom surface 61 that can engage with a part of the mountain cap 4 from above when the push button 2 is in the raised position as shown in the figure, when the push button 2 is pushed down, the wedge plate 6 The bottom surface 61 of the horizontal valve rod 6 is seated on the mountain cap 4 and maintains a constant position regardless of the lowering of the push button 2, but the small diameter portion 55 of the horizontal valve rod 6 is lowered in the vertical hole 63,
At this time, the rear wall surface 54 of the circumferential groove 52 receives pressure from the upward slope 62 of the wedge plate 6, and the horizontal valve rod 5 is pulled rearward, so that the valve body 51 escapes from the injection port 21, thereby causing the injection port 21 opens. At this time, the injection valve is opened by lowering the injection valve rod 1, so that the injection liquid contained in the container is injected. When the pressure on the push button 2 is released, the injection valve is closed by the rise of the injection valve rod 1, and the pressure from the mountain cap 4 against the wedge plate 6 is lost due to the rise of the push button 2, and the circumference of the horizontal valve rod 5 is Rear wall surface 5 of groove 52
Since the pressure of the upward slope 62 on the valve 4 is also released, the horizontal valve rod 5, which is elastically supported toward the front, moves forward, and the valve body 51 closes the injection port 21 again.

(Effect of the invention) Thus, according to this invention, the vertical driving force caused by pressing down the push button 2 is converted into a lateral driving force that pulls the horizontal valve rod 5 backward through the upward slope 62 of the wedge plate 6. The upward slope 6
By appropriately selecting the angle of inclination 2, not only can a sensitive and reliable operation of opening the injection port be expected, but also the power transmission mechanism is simple, and at the same time, the wedge plate 6 can be easily connected to the horizontal valve rod 5. Installation is extremely simple and assembly costs are low. Moreover, according to this invention, the above-described effects based on opening and closing of the injection port can be immediately obtained by simply attaching the push button 2 to the conventionally most widely used type of aerosol injection container, excluding push buttons. There are significant practical benefits.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of one embodiment of this invention, Figure 2
The figure is a rear view of the wedge plate, FIG. 3 is a longitudinal sectional view, and FIG. 4 is a plan view. 1 is an injection valve rod, 11 is an injection passage, 12 is a side hole,
2 is a push button, 21 is an injection port, 22 is a vertical wall surface, 2
3 is a nozzle piece, 3 is a valve housing, 31 is an elastic gasket, 32 is a spring, 33 is a liquid suction pipe, 4 is a mountain cap, 5 is a horizontal valve rod, 51 is a valve body, 52 is a circumferential groove, 53 is a groove bottom surface , 54 is the rear wall surface, 55 is the small diameter portion, 56 is the spring, 57 is the leakage seal, 6
is a wedge plate, 61 is the bottom surface, 62 is an upward slope, 6
3 is a vertically elongated hole, and 64 is a guide groove.

Claims (1)

[Scope of utility model registration request] The injection passage 11 is bored and the valve housing 3 is vertically movable and tightly inserted into the valve housing 3 fixed to the mountain cap 4 of the container containing the injection liquid so that the injection valve can be closed by descending and closing by rising. It has an injection valve rod 1 and a push button 2 having an injection port 21 connected to the injection passage 11 and mounted on the injection valve rod 1, so that the injection liquid can be injected by pressing down the push button 2. In the injection head, the push button 2 includes a horizontal valve rod 5 that is elastically supported forward, a wedge plate 6 that transmits driving force to the horizontal valve rod 5, and a vertical wall surface 22 that can slide on the wedge plate 6. The horizontal valve rod 5 has a valve body 51 that can be engaged with the injection port 21 from the inside.
is provided at the front end, and a cylindrical small diameter portion 55 formed by the groove bottom surface 53 of the circumferential groove 52 is provided at the tail portion,
The wedge plate 6 has a bottom surface 61 that fits into the vertical wall surface 22 and can substantially engage with a part of the mountain cap 4 from above when the push button 2 is in the raised position, and also has a bottom surface 61 that can be engaged with a portion of the mountain cap 4 from above when the push button 2 is in the raised position.
An upward slope 62 that engages with the upward slope 62, a vertical hole 63 whose lower part opens into the upward slope 62, and a guide groove 64 to the vertical hole 63 are formed in the head, and the small diameter portion 55 of the horizontal valve rod 5 is connected to the vertical hole through the guide groove 64. Self-opening/closing jet head inserted into 63.