JPH0356264Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) This invention relates to a spray head with a protective cap for containers, such as aerosol injection containers and extrusion containers, that emit propellant by pressure against the propellant inside the container. In such a situation, the nozzle protruding outside the protective cap can be completely retracted after use.
Moreover, the purpose is to provide a simple structure.

(Structure of the device) This device will be explained below with reference to the illustrated embodiment. It has a protective cap consisting of an inner cylinder 31 to which is fixed, and an outer cylinder 32 rotatably fitted around the inner cylinder 31.

The push button 2 has an injection passage 21 connected to the valve stem 11, while the injection passage 21 is connected to the valve stem 11.
A horizontally supported nozzle 22 is provided with a base connected to the nozzle 22 . The nozzle 22 is a straight elastic tube, and the distance l between the beak end 23 and the axis of the push button 2 in the straight shape is longer than the radius of the outer cylinder 32. In addition,
Such a nozzle 22 can be made of only a suitable plastic tube, but if the elasticity is insufficient, a tube with a thin wire-wound spring fitted on the inner or outer circumferential surface may be used. .

The inner cylinder 31 has a horizontally long window hole 33 through which the nozzle 22 can be inserted. The outer cylinder 32 has a small window hole 34 that overlaps with a part of the long window hole 33 and allows the nozzle 22 to pass through. Opening position A corresponding to one end of the window hole 33 (indicated by symbol a)
and a closed position B where it extends beyond the other end (indicated by reference numeral b) of the long window hole 33 and overlaps the cylindrical wall of the inner cylinder 31 as shown in FIG.

The inner cylinder 31 also has a top wall 38 formed with a receiving groove 37 that can loosely receive the push plate 36 located at the position corresponding to the open position A of the small window hole 34.

Further, the outer cylinder 32 has a top wall 35, which is made of a suitably thin soft elastic material such as elastic plastic, and which hangs down when the top surface is pressed and when the pressure is released. It is elastically reversible. A push plate 36 is provided protruding from the lower surface of the top wall 35.

The push button 2 is also formed at its top with a projecting plate 24 which is loosely received in accordance with the shape of the receiving groove 37, and this projecting plate 24 reaches a position approximately corresponding to the top wall 38.

Although the invention is as described above, the drawings depict the nozzle 22 in an unused state, with the nozzle 22 housed within the protective cap described above. That is, the small window hole 34 bored in the outer cylinder 32 rotatably fitted onto the inner cylinder 31 whose hem is fixed to the container 1 is in the closed position B, while the nozzle 22 is in the closed position B. As described above, it is an elastic tube, and the distance l between the axis of the beak end 23 and the push button 2 is
is longer than the radius of the outer cylinder 32, so the nozzle 22 is accommodated inside the outer cylinder 32 in a bent state as shown. Since the outer cylinder 32 is provided with a top wall 35, the inside and outside of the protective cap are completely shut off, and therefore the nozzle 22 and other movable parts are completely protected from external forces and dust. The top wall 35 of the outer cylinder is thin and soft elastic and has a press plate 36 formed on its lower surface, but as described above, the inner cylinder 1 has a top wall 38 in which a receiving groove 37 is formed. This receiving groove 37 receives the push plate 36 only when it is in the position corresponding to the open position A of the small window hole 34, so as shown in FIGS. 1 and 2,
When the push plate 36 is in the position corresponding to the closed position B of the small window hole 34, the push plate 36 is not received in the small window hole 34, and therefore, even if the top wall 35 of the outer cylinder 32 is pressed, the push plate 36 is obstructed by the top wall 38 of the inner cylinder 31 and cannot hang down. On the other hand, a projecting plate 24 is formed at the top of the push button 2, and this projecting plate 24 is loosely received in the receiving groove 37 and almost reaches the position of the top wall 38, so that the push plate 36 is inserted into the small window hole 34. When in the position corresponding to the open position A, the push plate 36 enters the receiving groove 37 and engages with the projecting plate 24 due to the pressure of the top wall 35, so that the push button 2 can be pressed. Therefore, in order to perform injection, the outer cylinder 32 is rotated in the direction of the arrow in FIG. 2, that is, so that the small window hole 34 moves from the closed position B to the open position A described above.

As described above, in the illustrated housing state of the nozzle 22, the nozzle 22 is of course inside the outer cylinder 32, but the inner cylinder 31 has a horizontally long window hole 33 through which the nozzle 22 can be inserted. Therefore, the beak end 23 of the nozzle stored in the bent state as described above comes into contact with the inner surface of the outer cylinder 32 through the long window hole 33. Therefore, by rotating the outer cylinder 32 as described above, the small window hole 34 is placed at the beak end 23, and the small window hole 34 is placed at the beak end 23.
When the nozzle reaches position 3, the beak end 23 of the nozzle, which is a straight elastic tube, enters the small window hole 34, and as the small window hole 34 moves, it reaches the open position A of the small window hole 34, and the nozzle 22 recovers its straight shape as depicted by the two-dot chain line in FIG. 2, and the beak end 23 completely appears outside the outer cylinder 32.

Therefore, at this time, if the top wall 35 of the outer cylinder 32 is pressed as described above, the push button 2 will be lowered and the nozzle 2 will be opened.
Injection is performed through 2, and when the pressure is released, the push button 2 is also returned to its position due to the return of the top wall 35,
Injection stops. By the way, as mentioned above, the projecting plate 24 of the push button 2 is attached to the inner cylinder 3 fixed to the container 1.
Since the push button 2 is loosely received according to the shape of the receiving groove 37 provided in the top wall 38 of the push button 1, it guides the push button 2 up and down while keeping it in a constant direction.
The position of the base of the nozzle 22, which is fixed to , remains unchanged, and the jet direction of the straight nozzle 22 is maintained in a constant direction.

Next, when the outer cylinder 32 is rotated in the opposite direction to the arrow in FIG. While the position of the base of the nozzle 22, which is fixed to the push button 2 which is kept in a fixed direction by the As it moves, the nozzle 22 bends, and when the small window hole 34 returns to the closed position B, the nozzle 22 returns to the stored state in which it is completely accommodated in the protective cap.

The reference numeral 39 indicates a stopper provided on a part of the top wall 38 of the inner cylinder, and when the outer cylinder 32 is rotated to a position corresponding to the closed position B of the small window hole 34,
A projecting plate 40 protruding from the inner circumferential wall of the outer cylinder 32 engages with a stopper 39 to prevent further rotation.

(Effect of the invention) Thus, according to this invention, when transportation, storage, or other operations of the container are not required, the movable parts of the device are completely contained by the protective cap and are protected from external forces and external dust. On the other hand, when using the container, a convenient injection container is provided in which the injection direction is determined by a simple operation of rotating the outer cylinder, and a nozzle facing a certain direction appears on the outside. However, especially in this invention, since the nozzle is made of a straight-oriented elastic tube, there is no need for a drive mechanism to change the position of the nozzle, and the mechanism for supporting the nozzle and maintaining its posture on the push button is extremely simple. And it is highly mass-producible.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the injection head according to this invention in an unused state, Fig. 2 is a -sectional view of Fig. 1, Fig. 3 is a longitudinal cross-sectional view of the top wall of the outer cylinder, and Fig. 4 is the same. FIG. 5 is a bottom view, FIG. 5 is a plan view of the push button, FIG. 6 is a vertical sectional view, and FIG. 7 is a front view. 1 is a container, 11 is a valve stem, 12 is a mountain cap, 2 is a push button, 21 is an injection passage,
22 is a nozzle, 23 is a beak end, 24 and 40 are veneers,
31 is the inner cylinder, 32 is the outer cylinder, 33 is the long window hole, 34 is the small window hole, 35, 38 are the top walls, 36 is the push plate, 37 is the receiving groove, 39 is the stopper, l is the distance, and A is the opening. Position B is the closed position.

Claims (1)

[Scope of utility model registration request] Protection consisting of a push button 2 fitted to the top end of a valve stem 11 of a container 1 that accommodates the propellant, an inner cylinder 31 whose hem is fixed to the container 1, and an outer cylinder 32 rotatably fitted to the outside of the inner cylinder 31. The push button 2 has an injection passage 21 connected to the valve stem 11, and a nozzle 22 whose base is connected to the injection passage 21 and supported horizontally.
The nozzle 22 is a straight-oriented elastic tube, and the distance l between the straight beak end 23 and the axis of the push button 2 is equal to the outer cylinder 32.
The inner tube 31 has a horizontally long window hole 33 through which the nozzle 22 can be inserted, and the outer tube 32 has a small window that can overlap with a part of the long window hole 33 and through which the nozzle 22 can be inserted. A hole 34 is bored, and the small window hole 34 has an open position A corresponding to one end of the long window hole 33 and a closed position A where it overlaps with the cylinder wall of the inner cylinder 31 beyond the other end of the long window hole 33. B, and the inner cylinder 31 has a top wall 38 formed with a receiving groove 37 that can loosely receive the push plate 36 located at the position corresponding to the open position A, and the outer cylinder 32 has a top wall 38 on the lower surface. The push button 2 has a thin, soft elastic top wall 35 with a push plate 36 projecting thereon, and the push button 2 has a projecting plate 24 that is loosely received in the receiving groove 37 according to the shape of the receiving groove 37 and reaches approximately the position of the top wall 38. A jet head with a protective cap formed at the top.