JPS598761Y2 - Pressure injection container button cap - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved button cap for a pressure injection container, and its main purpose is to easily and reliably perform continuous injection.

In other words, conventional continuous injection is carried out by the user pressing down and maintaining it for a certain period of time with his or her own operating finger, or by using a movable member that can be switched between intermittent and continuous injection, but the former is difficult to maintain and cannot be left alone. In the latter case, there is a risk that the injection position may be changed to the continuous injection position due to some external impact.

SUMMARY OF THE INVENTION Therefore, the present invention provides a button cap that is fixedly set to keep the injection button safe when not in use, and has a push rod that is prevented from retreating and firmly maintains the depressed position when in use.

Referring now to the drawings showing the embodiments of the present invention, reference numeral 1 is a bell-shaped or other shaped cap with an upper wall 2 and an opening on the lower surface, and an inward protrusion 3 is provided on the inner periphery of the opening on the lower surface to form a pressure vessel 4.
The inner space accommodates the injection button 6 toward the bottom, and the nozzle surface of the injection button 6 is inserted into the window hole 7 formed in a part of the outer circumference of the cap. 6a will appear.

Numeral 8 has four parts that are opened in the diametrical direction of the cap 1 so as to leave the upper wall 2 of the cap 1 on the left and right sides, and are provided in the form of a groove of a constant width or as a simple recess, and the cylindrical part 9 is pressed from the bottom surface of the bottom 8a of the recess 8. A cylindrical part 9 hangs down inside the cap coaxially with the container 4.
The center 7L10 of is opened upward to the bottom 8a of the recess 8, and the center 7L10 is opened downward facing the upper end surface of the injection button 6.

Further, on the circumferential surface of the center hole 10 of the cylindrical portion 9, there is a protrusion toward the axis.
A ring-shaped locking protrusion 11 is provided.

Note that the design can be arbitrarily changed as to whether the locking convex portion 11 is provided in a ring shape in a part of the center hole 10 or continuously in a step-like manner over the entire length of the center hole.

Reference numeral 12 denotes a push rod that inserts the shaft portion 12a through the recess into the center hole 10 of the cylindrical portion 9, and also occupies a part or the entire length of the outer circumference of the shaft portion 12a to step the flange-shaped locking protrusion 13. The locking convex portion 11 formed in the center hole 10 is engaged with the locking convex portion 11 formed in the center hole 10 .

The locking convex portion 11.13 that creates the engagement is the horizontal shoulder portion 11a.
, 13a and tapers llb, 13b in the same way, and are fixed by fitting the locking projections 11 on one side into an annular recess formed at intervals of the locking projections 13 on the other side.

A taper 1lb of the center hole is provided opposite to the direction in which the pusher rod 12 is pressed down, and a taper 13b is provided on the locking convex portion 13 of the pusher rod 12 opposite to the taper 1lb to prevent forcible sliding when the pusher rod 12 is pressed down. When the locking convex part enters the annular recess, the horizontal shoulders 11a and 13a are engaged with each other to reliably prevent the locking protrusion from slipping out and to prevent movement in only one direction.

By pressing down the shaft portion 12a, the lower end protrudes from the center hole 10, and the injection button 6 can be pressed down.

Reference numeral 14 denotes an enlarged collar provided on the upper end of the shaft portion 12a having a push-down stroke 1 and a rake, which has a diameter different from that of the four portions 8, and is longer in the elongated direction than the width of the concave portion 8, and is horizontally mounted across the concave portion. , its longitudinal edges 14a are placed on the left and right sides of the upper wall 2 of the cap 1 so that they can be locked, making it impossible to push down the push rod 12 when not in use.

Further, the enlarged collar 14 is made shorter in the transverse direction than the eight widths of the recessed portion so that it can be received.

The locking state of the enlarged flange 14 and the cap 1 and its release are determined by the expansion flange 14 when the presser rod 12 is engaged with the shaft portion 12H.
This is done by pinching and forcing it to rotate.
Alternatively, when the enlarged flange 14 is made from a separate member from the shaft portion 12a, a rotatable shaft portion is created on the joint surface so that only the enlarged flange can be rotated independently.

When rotating the enlarged collar 14, the locked state and its release can be repeatedly operated.

Note that the engagement between the shaft portion 12a and the locking convex portion formed in the center hole 10 is not limited to the bevel-like shape as shown in the figure, but rather the engagement can be achieved by overcoming the spring pushing force of the injection button 6. Anything that can maintain its state is fine.

For example, protrusions having semicircular cross sections may be provided at regular intervals.

Incidentally, in order to easily perform this operation when pressing down the push-down rod 12, a slot may be provided in the axial direction in the cylindrical portion 9, and the cylindrical portion may be expanded while being expanded.

As described above, the present invention attaches the push rod of the button above the axis of the injection button to the cylindrical portion of the button cap, and engages the fitting surface of the cylindrical portion and the push rod shaft so that it can only move forward and cannot move backward. A stop part is provided, and the upper end of the shaft is provided with a deformable and enlarged flange with a width that fits into the recess in the cap's upper wall and a length that can be horizontally engaged between the cap's upper walls on the left and right sides of the recess, eliminating the need for a push rod. At times, the enlarged flange allows the set state to be maintained robustly, and when used only when pressed down, the locking part resists the elastic force of the injection button applied to the shaft and is maintained at the locking part, preventing it from retreating, ensuring a secure and robust state. This button cap allows continuous injection to continue and provides safe protection against unexpected external shocks.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a button cap in which the present invention has been implemented, Fig. 2 is a longitudinal cross-sectional view of the button cap attached to a pressure container, and Fig. 3 is an enlarged cross-sectional view of the engaging part between the pusher rod and the cylindrical portion. show. 1...Cap, 2...Top wall, 4...
... Pressure vessel, 6 ... Injection button, 8 ...
... Recessed portion, 9... Cylindrical portion, 10... Center hole, 11.13. ．． ．．・・・． Locking convex portion, 12...
・Press rod, 14...Expanded tsuba.

Claims (1)

[Scope of utility model registration request] A recess 8 recessed along the cap diameter line is formed on the upper wall surface of the cap 1, which can be fitted onto the top of the pressure vessel 4 with the injection button 6 accommodated in the internal space and with the nozzle surface facing the injection window hole 7, and at the bottom of this recess. A cylindrical part 9 opening a center hole is arranged in series, and the shaft part 12a of the push-down rod 12 is inserted into the center hole of the cylindrical part so as to be able to press down the injection button 6 below, and the center hole 10 and the shaft part are inserted. 12
A shaft portion 12 of the push-down rod 12 is provided on the contact surface with the recess 8 in the width direction and has a length that is narrower than the recess 8 in the width direction. This button cap for a pressure injection container is provided with a temple-deformed enlarged flange 14 that crosses the width of the recess in the direction and is laterally engaged between the upper walls of the cap.