JPH0429871Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) This invention is an injection container that drives a suction pump by pressing a push button with the tip of a finger, and sprays a projectile from an injection port equipped on the push button. Regarding this, the nozzle, which is housed in the protective cap when not in operation, automatically protrudes from the protective cap and sprays when it is activated, and when the fingertip operation is stopped, the nozzle is automatically protected in the protective cap again. It is also an object to provide an acupressure pump injection container whose injection port is automatically closed when not in operation.

(Structure of the invention) This invention will be explained below with reference to the illustrated embodiment. It has piece 5.

In the above-described suction pump, the cylinder 14 is tightly inserted into the bag opening 13 of the soft bag 12 that accommodates the injection material in the outer container 11 with a ventilation passage.
The projector sucks up the projectile in the soft bag 12 and releases the projectile through the shaft hole 17 of the piston rod 16 extending upward from the piston 15.

The above-mentioned ventilation passage of the outer container may be, for example, a through hole as shown by the reference numeral 18 in FIG.
It is also possible to utilize the screw gap with 1.

The cylinder 14 of the suction pump is axially fixed to the top wall 21 of the roof of the mouth 2 described above, but in the illustrated example, the cylinder 14 is molded integrally with the roof of the mouth 2. In the illustrated example, 61 is a check valve of the suction pump provided at the attachment part of the liquid suction pipe 62.

The push button 3 is a shaft handle 3 attached to the piston rod 16.
It has a cylindrical wall 32 surrounding the cylindrical wall 1.

The protective cap 4 has a cylindrical wall 41 provided around the cylindrical wall 32 of the push button 3, which is rotatably fitted onto the palate 2.

The nozzle piece 5 has a shaft hole 51 connected to the shaft hole 17 of the piston, and is fitted into the shaft handle 31 of the push button so as to be slidable back and forth.

Further, according to this invention, the piston 15 is elastically supported upward, and the piston rod 16 is non-rotatably supported by the palate 2. That is, according to the illustrated embodiment, 18 is a spring for supporting the piston 15. Furthermore, as can be seen particularly from FIGS. 3 and 4, four vertical keys 19 are provided on the circumferential surface of the piston rod 16, and these keys 19 are connected to the presser foot fitted into the push button 2. It is slidably fitted into the key groove 23 of the plate 22 and is non-rotatably supported by the palate 2.

Furthermore, according to this invention, the nozzle piece 5 includes an end wall 53 having a through hole 52 and a collar 54.
is formed, and a protruding stopper 55 is provided on the end wall 53. At the front end of the nozzle 5, an injection port 56 is provided in the end wall 58.
An elastic cap 57 made of rubber or the like (see especially FIG. 5) is tightly fitted into the cap, and a convex stopper 55 is fitted into the injection port 56.

Furthermore, according to this invention, the cylindrical wall 3 of the push button
A split groove 33 is bored in the front part of 2, and the groove width of this split groove 33 is wider than the diameter of the collar 54. Also,
A window hole 42 is bored in the cylindrical wall 41 of the protective cap, and the width of the window hole 42 is wider than the diameter of the elastic cap 57 and narrower than the diameter of the collar 54.

This device is constructed as described above, and the cylinder 14 of the suction pump described above is tightly inserted into the bag opening 13 of the soft bag 12 that accommodates the propellant, and the piston rod of the piston 15 is elastically supported upward. Since the push button 3 is mounted on the push button 16, the push button 3 is in the raised position shown in FIG. 1 when inactive.
It is now assumed that the entire passage from the cylinder chamber 63 to the nozzle 5 is filled with the injected material. The initial filling of all passages with such a propellant will be discussed below.

If you press the push button 3 with your fingertips, the piston 15 will move to the second position.
As it descends as shown in the figure, the suction valve of the suction pump, such as the check valve 61 shown in the figure, closes, so that the injected material in the cylinder chamber 63 tries to rise through the shaft hole 17 of the piston rod, causing the nozzle piece to Internal pressure is applied to the shaft hole 51 of. An end wall 53 is formed on the nozzle piece 5, and an elastic cap 57 having an end wall injection port 56 is tightly fitted to the front end of the end wall 53.
The injection port 56 has a convex plug 55 provided convexly on the end wall 53.
are fitted and the injection port 56 is closed,
Since the above-mentioned internal pressure of the shaft hole 51 is applied to the end wall 58 (see FIG. 5) of the elastic cap 57 through the through hole 52, this end wall 58 swells outward, and at this time, the injection port 56 separates from the convex plug 55. and then open, releasing a propellant.

Since the cylinder 14 of the suction pump is tightly inserted into the bag opening of the soft bag 12 that accommodates the propellant, the soft bag 12 contracts due to the ejection of the propellant, and the space between the outer container 11 and the soft bag 12 is filled. expands, and the air required for this is supplied through a ventilation channel, such as the opening 18.

Now, the nozzle piece 5 is the shaft handle 31 of the push button 3.
Since the nozzle piece 5 is fitted so as to be slidable back and forth, when the nozzle piece 5 is subjected to internal pressure from the ejected material, the nozzle piece 5 moves forward as shown in FIG. The collar of the nozzle piece is 5.
Since the groove 33 is wider than the diameter of the groove 4, the collar 54 advances beyond the groove 33.

On the other hand, the protective cap 4 has a cylindrical wall 41 rotatably fitted into the mouth lid 2 of the outer container, and the cylindrical wall 41 has a width wider than the diameter of the elastic cap 57 and narrower than the diameter of the brim 54. Since the window hole 42 is drilled, rotate the protective cap 4 and open the window hole 4.
2 is positioned in front of the nozzle 5, the tip of the advancing nozzle piece 5 projects outward from the window hole 42, and its advancement is stopped when the collar 54 hits the side edge of the window hole 42.

When the injection is finished and the push button 3 is released,
The pressure in the cylinder chamber 63 is reduced at the same time as the push button 3 rises due to the rise of the piston 15 supported by the ball, so that the ejected material in the soft bag 12 flows into the cylinder chamber 63.
is filled, and the nozzle piece 5 is retracted and retreated due to this reduced pressure. Further, the injection port 56 is closed again by the convex stopper 55 due to the return of the front wall 58 of the elastic cap that was inflated during injection.

In this way, the nozzle piece 5 that protrudes outward from the window hole 42 during the injection operation is retracted when the injection stops, so if the protective cap 4, which is no longer impeded in rotation, is rotated appropriately, the nozzle piece 5 that protrudes outward from the window hole 42 is closed by the cylindrical wall 32 of the push button, and the injection port 55 and the like are completely protected from external contamination by the cylindrical wall 41 of the protective cap. On this occasion,
Since all the injection paths including the shaft hole 51 of the nozzle piece are maintained in a slightly negative pressure state due to the upward movement of the piston 15, there is no inconvenience such as the injection material leaking from the injection port 56 when not in use. According to the illustrated example, in order to rotatably fit the protective cap 3 to the roof of the mouth 2 without easily coming off, a partial circumferential groove 43 corresponding to the small protrusion 24 of the roof of the mouth 2 is provided. is prevented from rotating more than necessary.

In this invention, when the injection container is not in use, the passage from the cylinder chamber 63 to the shaft hole 51 of the nozzle is empty and there is no ejected material, but if the push button 3 is operated once or twice, the injection pump will start ejecting It is unnecessary to explain that by sucking up the object, the internal air is discharged from the injection port 56 and replaced with the ejected object. Furthermore, since the piston rod 16 is non-rotatably supported by the palate 2, the direction of the nozzle 5 is fixed. It will be easy to understand that alignment can be done easily.

(Effect of the invention) Thus, according to this invention, in the injection container in which the suction pump is driven by pressing the push button with the fingertip, and the suction pump is sprayed from the nozzle of the push button,
When not in operation, the movable nozzle piece with the nozzle closed not only retracts into the protective cap, but also allows the front surface of the nozzle to be covered by the cylindrical wall of the protective cap, which particularly ensures the cleanliness of the nozzle. This prevents drying of the propellant inside, air oxidation, and other types of contamination. During the injection operation, the nozzle protrudes outward from the protective cap, so there is an advantage that the aim of the injection can be determined. Moreover, according to this invention, the above-mentioned movement of the nozzle in and out is automatically performed simply by pressing and releasing the push button, so that the convenience for the consumer using the injection container can be greatly expanded.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the main parts of an embodiment of this invention when it is not in operation, Fig. 2 is a longitudinal sectional side view of the main parts when it is in operation, Fig. 3 is a plan view of the piston and piston rod, and Fig. 4. 5 is an enlarged longitudinal sectional view of the nozzle, and FIG. 6 is an enlarged bottom view of the nozzle. 11 is an outer container, 12 is a soft bag, 13 is a bag opening, 1
4 is a cylinder, 15 is a piston, 16 is a piston rod, 17 is a shaft hole, 18 is a spring, 19 is a key, 2 is a palate, 21 is a top wall, 22 is a presser plate, 23 is a key groove, 24 is a small protrusion, 3 is a push button, 31 is a shaft handle,
32 is a cylinder wall, 33 is a dividing groove, 4 is a protective cap, 4
1 is a cylinder wall, 42 is a window hole, 43 is a partial circumferential groove, 5 is a nozzle piece, 51 is a shaft hole, 52 is a through hole, 53 is an end wall, 54 is a collar, 55 is a projection plug, and 56 is an injection port ,
57 is an elastic cap, 58 is an end wall, 61 is a check valve, 62 is a liquid suction pipe, and 63 is a cylinder chamber.

Claims (1)

[Scope of utility model registration request] Inside the outer container 11 with a ventilation passage, the cylinder 14 is tightly inserted into the bag opening 13 of the soft bag 12 that houses the projectile, and the projectile inside the soft bag 12 is sucked up and sent upward from the piston 15 supported upwardly. A suction pump that discharges the gas through the shaft hole 17 of the piston rod 16 that extends, a lid 2 of the outer container 11 in which the cylinder 14 is fixed to the top wall 21, and a shaft handle 31 that is attached to the piston rod 16. A push button 3 having a circumferential cylindrical wall 32, a protective cap 4 rotatably fitted to the palate 2 with a cylindrical wall 41 circumferentially provided along the outer periphery of the cylindrical wall 32, and a shaft hole of the piston. 1
7 and the shaft hole 51 connected to the shaft handle 3.
1 and a nozzle piece 5 fitted so as to be slidable back and forth, a piston rod 16 is non-rotatably supported by the palate 2, and an end wall 53 having a through hole 52 and a collar 54 are attached to the nozzle piece 5. As well as forming a convex stopper 5
5 is provided protrudingly on the end wall 53, and an injection port 5 is provided on the end wall 58.
An elastic cap 57 with a hole 6 is tightly fitted onto the front end of the nozzle piece 5, and the injection port 56 is fitted into the protrusion 55. Punched in front and elastic cap 5
7 and narrower than the diameter of the flange 54, the cylindrical wall 41 is provided with a window hole 42.