JPH0417252Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a trigger-type liquid ejector that is attached to a liquid container and ejects the liquid in the liquid container to the outside from an ejection nozzle by operating a trigger. This invention relates to a mounting cap that is attached to a liquid container and is provided with engaging means to prevent loosening.

[Conventional technology]

As a liquid ejector of this type, one described in Japanese Patent Laid-Open No. 57-59660 is known.

As shown in FIG. 5, by reciprocating a piston 22 that self-returns to a base 21 by operating a trigger 23, liquid is sucked from a liquid container 25 through a suction nozzle 24 and a jet nozzle 26 is generated.
A liquid pump is provided for spouting the liquid from the base body 21, and the base body 21 further includes a threaded portion for screwing into the mouth portion 27 of the liquid container 25 to attach the base body 21 to the liquid container 25. A mounting cap 28 having a diameter is rotatably supported.

With this configuration, when the mounting cap 28 is screwed onto the opening 27 of the liquid container 25, the base body 21 is firmly attached to the liquid container 25, and when the trigger 23 is operated in this state, the liquid in the liquid container 25 is is sucked from the suction nozzle 24 and vigorously ejected to the outside from the ejection nozzle 26.

[Problem that the invention attempts to solve]

In a trigger-type liquid ejector with this structure,
Even if the mounting cap 28 is screwed onto the opening 27 of the liquid container 25 and intended to be firmly tightened, the tightening gradually becomes loose as the trigger 23 is operated or the cap is transported together with the liquid container 25. There is a problem in that the mounting cap 28 may eventually fall off from the mouth 27 of the liquid container 25, and at that time, the liquid contained in the liquid container 25 may spill outside.

The present invention was developed to solve these problems, and is a trigger-type liquid ejector that is attached to a liquid container and ejects the liquid in the liquid container to the outside from the ejection nozzle. The technical problem is to prevent a mounting cap for attaching to a container from loosening during use.

[Means for solving problems]

In order to solve the above technical problem, the present invention takes the following technical measures.

That is, by reciprocating a self-returning piston 2 by operating a trigger 3, liquid is sucked from a liquid suction nozzle 4, and this base 1 is attached to a base body 1 equipped with a liquid pump 6 that spouts this liquid from a liquid jet nozzle 5. A mounting cap having a threaded portion 10 for fixing the cap to the mouth of a liquid container is rotatably supported. Further, each of the mounting cap 7 and the base body 1 is provided with a hooking portion, and one of these hooking portions is cut into a tongue shape on three sides, leaving a portion that will serve as a fulcrum, and then a cut is made from the fulcrum. The engaging protrusion 11 is formed so that it gradually bulges toward the fulcrum and can move upward and downward with elasticity around the fulcrum, and further, one of the protrusions faces the engaging protrusion 11. However, when the mounting cap 7 is rotated in the direction of screwing it onto the liquid container, it moves from the fulcrum of the engagement protrusion 11 toward the protrusion, elastically deforms the protrusion, and does not engage, but rotates in the opposite direction. A trigger-type liquid ejector is used as a protruding stopper 12 that engages with the engaging protrusion 11 to prevent rotation only when rotating.

[Effect]

In the present invention, once the mounting cap is screwed onto the mouth of the liquid container and tightened, the action of the engaging portions provided on each of the mounting cap and the base body prevents the mounting cap from rotating in the direction of loosening. The mounting cap will not come loose or come off during use.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

In FIG. 1, the base body 1 is provided with a liquid pump 6 that sucks liquid from a liquid suction nozzle 4 by operating a trigger 3 on a self-returning piston 2 and spouts the liquid to the outside from a liquid jet nozzle 5. There is.

A mounting cap 7 is rotatably supported near the bottom of the liquid pump 6 in the figure.

That is, as shown in FIG. 2, the mounting cap 7 has a cylindrical shape with the entire lower part open in the figure and the mounting hole 8 provided in the upper part.
The inner cylinder 9 of the liquid pump shown in FIG. 3 is loosely inserted into this mounting hole 8, and is supported by a holding member (not shown) so that the inner cylinder 9 does not come off from the cap 7.

Further, a threaded part 10 is formed on the inner circumferential surface of the mounting cap 7 to be threaded into the opening of a liquid container (not shown), and a plurality of engaging protrusions 11 are formed around the mounting hole 8. ing.

This engaging protrusion 11 has a tongue-like shape with three sides cut out except for a part that will serve as a fulcrum, and is gradually raised from the fulcrum to the notch, and this raised part serves as the fulcrum. It is formed so that it can move up and down with a certain elasticity around the center.

Further, two protruding stoppers 12 are provided on the base body 1 at the portions where the engaging protrusions 11 of the mounting cap 7 come into contact.

This protruding stopper 12 and the engaging protrusion 11 cooperate with each other to prevent the rotation of the mounting cap 7 when the mounting cap 7 is screwed into the opening of the liquid container. It constitutes a hooking part that prevents rotation only when it rotates in the direction of removal from the mouth of the container.

FIG. 4 shows this situation, and when rotating the mounting cap 7 in the direction shown by arrow P in the figure, that is, in the direction in which the mounting cap is screwed into the opening of the liquid container, the above-mentioned engagement Protrusion 11
is pressed by the protruding stopper 12 and is elastically deformed as shown by the dotted line in the figure, without interfering with its rotation.

However, when attempting to rotate the attachment cap 7 in the direction opposite to the direction indicated by the arrow P in the figure, that is, in the direction in which the attachment cap 7 is removed, the engagement protrusion 11 engages with the protrusion-like stopper 12.
It engages with the tension and prevents its rotation.

Therefore, according to this embodiment, once the attachment cap 7 is screwed onto the liquid container, it will not loosen during use due to the action of the engaging portion.

Further, the engaging protrusion 11 of the mounting cap 7
As such, a tongue-shaped piece is formed around the mounting hole 9 of the mounting cap 7 with a part cut out on three sides, leaving a part that will serve as a fulcrum, and is gradually raised from the fulcrum to the notch. Since the raised part is formed so that it can move upward and downward with a certain elasticity around the fulcrum part, it can be constructed by a part of the mounting cap 7 itself, and can be constructed by a special elastic member or the like. Since there is no need to use a mold, it can be easily mass-produced by means such as integral molding.

In addition, in the above embodiment, the upper layer has elasticity,
An engaging protrusion 11 that can be moved downward is provided on the mounting cap 7, and a protruding stopper 12 is provided on the base 1, but the same effect can be achieved even if the engaging protrusion is provided on the base and the protruding stopper is provided on the mounting cap. It is possible to obtain the effect.

However, in that case, it cannot be denied that there is a design disadvantage in that it is difficult to provide the structural engaging protrusion of the base body compared to the above embodiment.

Further, the engaging protrusion is not necessarily limited to that of the embodiment described above, but may be any type that can move upward and downward with elasticity and engages only in a certain direction.

[Effect of idea]

According to the present invention, the attachment cap screwed onto the liquid container is prevented from rotating in the direction of loosening due to the cooperative action of the engaging portions provided on each of the base body and the attachment cap. does not loosen or come off, and since the engaging protrusion 11 has elasticity by cutting on three sides, there is no need to create a special part separately, and the structure is simple.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the trigger type liquid ejector according to the present invention, Figs. 2 and 3 are perspective views of each part thereof, and Fig. 4 is for explaining the cooperative operation of the engaging part. , and FIG. 5 are vertical sectional views of the conventional example. DESCRIPTION OF SYMBOLS 1...Base body, 2...Piston, 3...Trigger, 4...Liquid suction nozzle, 5...Liquid ejection nozzle, 6...Liquid pump, 7...Mounting cap, 10...Threaded part, 11... ...An engaging protrusion that constitutes an engaging part, 12...A stopper on the protrusion that constitutes an engaging part.

Claims (1)

[Scope of utility model registration request] By reciprocating the self-returning piston 2 by operating the trigger 3, the base 1 is transferred to the base 1, which is equipped with a liquid pump 6 that sucks liquid from the liquid suction nozzle 4 and spouts this liquid from the liquid jet nozzle 5. A mounting cap 7 having a threaded portion 10 for fixing to the mouth of the container is rotatably supported, and this mounting cap 7 and the base 1
Each of the hooks is provided with a hooking portion that hooks with each other, and one of these hooking portions is cut into a tongue shape on three sides, leaving a part that will serve as a fulcrum, and the hook is gradually moved from the fulcrum to the notch. A hooking protrusion 11 is formed so that it is raised and can move upward and downward with elasticity about the fulcrum part, and further, one of the protrusions is opposite to the hooking protrusion 11, and the attachment cap 7 When rotating in the direction of screwing into the liquid container, it moves from the fulcrum of the engaging protrusion 11 toward the protruding part, elastically deforming the protruding part, and does not engage, but only when rotating in the opposite direction. A trigger-type liquid ejector characterized in that it has a protruding stopper 12 that engages with an engaging protrusion 11 to prevent its rotation.