JPH0244863Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Purpose of the Invention) The purpose of this invention is to provide an aerosol injection device that has a small number of component parts, a simple assembly method, and is highly mass-producible.

(Structure of the invention) This invention will be explained below with reference to the illustrated embodiment. Reference numeral 1 represents a mirror plate of a mountain cap.
Reference numeral 13 denotes a central cylinder, which is formed by an outer cylinder wall 11 bent upward with the axis of the end plate 1, and an inner cylinder wall 12 bent downward from the top end of the outer cylinder wall 11.
2 is a liquid suction pipe, the top of which is connected to the outer cylinder wall 11 and the inner cylinder wall 1.
It is inserted and fitted between the two. Reference numeral 3 denotes a push button in which an injection port 31 is bored, and is made of a soft elastic material such as rubber or synthetic resin, and its cylinder handle 34 is slidably attached to the center cylinder 1.
3 is secretly inserted. The cylinder handle 34 is bottomed and has a peripheral collar 33 on which the edge 14 of the inner cylinder wall 12 of the central cylinder is seated. 3
Reference numeral 2 denotes flexible claws integrated with the push button 3 which are provided hanging down and protruding from the concentric outer periphery of the cylindrical handle 34, and these flexible claws 32
is engaged with the top edge 15 of the central cylinder. Reference numeral 35 denotes a side hole bored in the cylinder handle 34 above the collar 33, and the side hole 35 is connected to the injection port 31 through the shaft hole 36 of the cylinder handle.

According to the illustrated embodiment, the shaft hole 36 of the cylindrical handle 34 has a large diameter at the top and a small diameter at the bottom, with a funnel-shaped portion 37 formed therebetween. Shaft hole 3
The large-diameter upper part of 6 is opened at the top surface of the push button 3, and the plug body 4 is inserted into the shaft hole 36 through this opening 38.
It is inserted into the upper part. The upper part of the plug body 4 is tightly fitted into the above-mentioned large diameter upper part of the shaft hole 36,
Since the lower part of the plug 4 is formed to have a small diameter, a cylindrical cavity 5 is formed around the lower part of the plug 4 when the plug 4 is inserted. The lower end portion 41 of the plug body 4 is conical, and its conical surface engages with the funnel-shaped portion 37 described above, and a narrow groove 42 is bored in this conical surface, so that the cylindrical handle 34 The shaft hole 36 is connected to the injection port 31 through a narrow groove 42 and a hole 5, and by appropriately designing the size of the narrow groove 42, the amount of the injection liquid passing through can be regulated as desired. There is. In addition, when the plug body 4 is pulled out, a nozzle for filling the injection liquid (not shown) is inserted into the above-mentioned large diameter upper part of the shaft hole 36,
After pressure filling is carried out through the liquid suction pipe 2 by engaging and pressing the tip of this filling nozzle with the funnel-shaped portion 37, the stopper 4 may be inserted in exchange for removing the filling nozzle.

Since this device is constructed as described above, when the push button 3 is pressed, the flexible pawl 32 integrated with the soft elastic push button is bent, and at that time, the cylinder handle 13 that is tightly inserted into the center cylinder 13 is bent. descend. Since the top of the liquid suction tube 2 is inserted and fitted between the outer cylinder wall 11 and the inner cylinder wall 12 of the center column 13, the end edge 14 of the inner cylinder wall 12 will move as the cylinder handle 13 descends as described above. The side hole 35 that has moved downward appears inside the liquid suction pipe 2. On the other hand, side hole 3
5 is connected to the injection port 31 through the shaft hole 36 of the cylindrical handle 34, so that the injection liquid in the injection container passes through the liquid suction pipe 2 and the side hole 35 and is injected from the injection port 31.
When the pressure on the push button 3 is released, the push button 3 is raised by the elasticity of the flexible claw 32, and the upper surface of the collar 33 provided around the cylinder handle 34 is brought up to the end of the inner cylinder wall 12 of the center cylinder 13. By engaging the lip 14, the upward movement of the push button 3 is stopped. At that time, the side hole 35 moves back into the center tube 13 into which the tube handle 34 is tightly inserted, so the relationship between the side hole 35 and the shaft hole of the liquid suction tube 2 is interrupted, and therefore, the injection is prevented. Stop.

(Effect of the invention) In other words, this invention is as described above,
By pressing or releasing the push button 3, injection or stopping of the injection is carried out in the same way as in conventional aerosol injection devices. A sealing member (gasket) that fits into the mountain cap, a valve casing that is fitted to the mountain cap through this sealing member, a valve stem that accurately drills a thin valve hole, and an independent valve spring that controls the vertical movement of the valve stem. None of the individual members are required, and the role of these individual members is entirely taken over by the mountain cap itself and the push button itself. These mountain caps and pushbuttons are not only easily manufactured by mechanical molding like conventional mountain caps and pushbuttons, but also by fitting the liquid suction tube into the mountain cap and forming the pushbutton 3. Assembly of the injection device is completed by simply pushing the cylindrical handle 34 into the shaft hole of the central column 13.

Thus, since the aerosol injection valve assembly according to this invention has a very small number of parts, parts management is easy, and the assembly process is extremely simple, so it greatly contributes to the mass production of aerosol injection devices and the reduction of production costs. be.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of the main part of an embodiment of the aerosol injection valve assembly according to this invention, Fig. 2 is a bottom view of the push button, Fig. 3 is a bottom view of the stopper, and Fig. 4 is the same main part. FIG. 1 is the mirror plate of the mountain cap, 11 is the outer cylinder wall, 12 is the inner cylinder wall, 13 is the center column, 14 is the edge,
15 is the top edge, 2 is the liquid suction tube, 3 is the push button, 31 is the injection port, 32 is the flexible claw, 33 is the collar, 34 is the cylinder plate, 35 is the side hole, 36 is the shaft hole, 37 is the funnel shape Department,
38 is an opening, 4 is a stopper, 41 is a lower end, 42 is a narrow groove, and 5 is a hole.

Claims (1)

[Scope of utility model registration request] A center cylinder 13 is formed by an outer cylinder wall 11 bent upward with the axis of the end plate 1 of the mountain cap, and an inner cylinder wall 12 bent downward from the top end of the outer cylinder wall 11.
The top of the liquid suction tube 2 is inserted and fitted between the outer cylinder wall 11 and the inner cylinder wall 12, and the collar 33 of the push button 3 made of a soft elastic body with an injection port 31 is provided around it. The bottom cylinder handle 34 is slidably and closely inserted into the center cylinder 13, the edge 14 of the inner cylinder wall 12 is seated on the collar 33, and the push button 3 is integrally provided with a hanging protrusion on the concentric outer periphery of the cylinder handle 34. The flexible claws 32 are engaged with the top edge 15 of the center cylinder 13, and the side hole 35 connected to the injection port 31 through the shaft hole 36 of the cylinder handle is connected to the upper part of the collar 33. an aerosol injection valve assembly having a tube handle 34 bored therein;