JP2564641Y2 - Seal structure of liquid dispenser - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating pump type liquid dispenser which is mounted on various liquid containers for use, and more particularly, when a stem is locked in a state where the stem is pushed down to the dispenser body. The present invention relates to a sealing structure for performing sealing.

[0002]

2. Description of the Related Art Conventionally, in a reciprocating pump type liquid dispenser which is mounted on various liquid containers and used for use, a screwing groove for locking is provided on both sides so that a stem can be locked in a state of being pushed down with respect to the dispenser body. There are known techniques for preventing liquid leakage during transportation, storage, and display (for example, Japanese Utility Model Laid-Open No. 59-82569, Japanese Utility Model Laid-Open No. 62-114672, and Japanese Utility Model Laid-Open No. 3-38174). In this case, it is assumed that the locked state is easily released by releasing the screw engagement, so that the locked state is released by mischief or the like, and it is also possible to re-lock after consuming a part of the contents. It was assumed that it was necessary to seal in the locked state and clearly indicate that it was not used in order to give consumers a sense of security.

Conventionally, the following three types of sealing structures have been known. In a locked state, a sealing structure in which a cap that engages with the ejection head and the dispenser body of the stem head is separately prepared. In the locked state, a sealing structure in which the entire dispenser including the discharge head on the stem head is integrally packaged with a shrink film. In a locked state, a sealing structure in which the discharge head on the stem head and the dispenser body are connected with an adhesive seal.

[0004]

However, although the above structure has a psychological effect of preventing tampering by providing a cap, it is actually locked again after releasing the locked state, and then the cap is removed. Once applied, there is a problem that it cannot be distinguished from an unused one in terms of external shape, and the necessity of separately using a useless cap at the time of use has a problem contrary to resource saving.

On the other hand, in the above structure, a complete sealing effect can be obtained, but on the other hand, a large packaging cost is required.
Further, there is a problem that the productivity of the product is reduced by adding a new packaging process.

[0006] Further, the above-mentioned means can still obtain a complete sealing effect, but on the other hand, there is a possibility that the seal is not completely peeled off during use, leaving unsightly seal marks.
Further, in terms of manufacturing, there is a problem that not only the cost for the seal is extra, but also the speed of the manufacturing line must be slowed down in order to apply the seal, and the productivity of the product decreases.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a locking mechanism so that the stem can be locked in a state in which the stem is pushed down with respect to the dispenser body. the following two devised regarding sealing structures that can be implemented is disclosed in a liquid dispensing device of the reciprocating pump provided with Nishigomizo.

That is, in the first invention, a slidable hanging piece is integrally provided on a discharge head of a stem head via a hinge portion formed in a thin plate shape so as to be able to be torn off, and provided on the back side of the hanging piece. An insertion plate having an enlarged portion is provided at the tip, and a slit is provided on the side of the dispenser main body so that the insertion plate of the hanging piece can pass therethrough when the stem is locked.

[0009] The second invention is Hikichi the擺動freely suspended piece that the lower end to the discharge head and formed into a hook shape of the stem head
It is provided integrally via a hinge portion formed in a thin plate shape so that it can be cut off , while an edge portion with which the lower end of the hanging piece can be engaged in the locked state of the stem is provided on the spout body side. I do.

[0010]

Therefore , according to the first aspect of the present invention, an insertion plate having an enlarged portion at the tip is provided on the back side of the hanging piece, while the insertion plate of the hanging piece is provided on the side of the dispenser body when the stem is locked. Since a slit that can penetrate is provided, if the insertion plate of the hanging piece is pushed into the slit in the locked state of the stem, the enormous portion at the tip of the insertion plate penetrates the slit, and both engage and seal is realized Is done. On the other hand, if the stem is rotated by holding the discharge head to cancel the locked state, the hanging piece is engaged with the dispenser body, so the hanging piece is torn off from the hinge formed in a thin plate shape, and the seal is sealed. A breaking action occurs. In this case, it is impossible to recover the hanging piece that has been torn once, so that an effect of preventing re-sealing occurs, and it is easily recognized that the apparently locked state has been once canceled. Produces an effect.

According to the second aspect of the present invention, the lower end of the hanging piece is shaped like a hook, while the spout body has an edge on the side where the lower end of the hanging piece can be engaged when the stem is locked. Since it is provided, if the lower end of the hanging piece is engaged with the edge of the dispenser main body in the locked state of the stem, both are engaged to achieve sealing. On the other hand, if the stem is rotated by holding the discharge head to cancel the locked state, the hanging piece is engaged with the dispenser body, so the hanging piece is torn off from the hinge formed in a thin plate shape, and the seal is sealed. A breaking action occurs.
In this case, since it is impossible to recover the hanging piece that has been torn once, the effect of preventing re-sealing occurs, and it is easily determined that the apparently locked state has been canceled once. Produces an effect.

[0012]

1 shows one embodiment of a liquid dispenser in which the present invention is implemented.
It is a figure showing an example . This liquid dispenser is of a conventionally known reciprocating pump type in which a stem 10 can be locked in a depressed state with respect to the dispenser body 1, and a head is provided in an accumulator 2 to be suspended in a container. Discharge head 1
1 is slidably fitted in a state where stems 10 each having a cylindrical piston 12 on the peripheral side are urged upward by a spring 13,
A suction valve X of a ball valve type is provided at the bottom of the accumulator 2, and the accumulator 2 is moved between the piston 12 and the stem 10 by sliding of the piston with respect to the stem.
A discharge valve Y that opens and closes a flow path from inside to the stem is provided,
Locking screw grooves 4a, 11 are provided on both sides of the accumulator 2 so that the stem 10 can be locked in a depressed state.
a. Reference numeral 3 in the figure denotes a rotatable screw cap for attaching the liquid dispenser to the opening of the container, and reference numeral 4 denotes an upper cap that functions as a stopper for the screw cap.

FIGS. 2 to 5 show a specific embodiment of the second invention. In the drawing, reference numeral 30 denotes a hanging piece. The hanging piece 30 is formed integrally with the ejection head 11 via the hinge portion 31. In the present invention, the hinge portion 31 is formed in a thin plate shape so as to be easily torn. In the figure, reference numeral 32 denotes an insertion plate projecting from the back side of the hanging piece 30.
3 and 33 are provided.

On the other hand, reference numeral 35 in the drawing denotes a slit through which the insertion plate 32 of the hanging piece 30 can penetrate. In this embodiment, the slit 35 is provided on the upper cap 4 in the dispenser main body 1. This slit 35 may be provided at a position where the hanging piece 30 is located in the locked state of the stem 10. However, in actuality, the position of the upper and lower caps 4 is changed in consideration of the design effect in this embodiment because the position moves back and forth due to screwing rotation. A plurality of slits 35 are arranged around the circumference. In this embodiment, a thin plate 36 which can be broken by inserting the insertion plate 32 of the hanging piece 30 is provided on the back side of the slit 35 in order to further enhance the sealing effect (see FIG. 4 ).

FIGS. 6 to 8 show a specific embodiment of the second invention. In this embodiment, the liquid dispenser itself is the same as that of the first invention described above, and the description thereof is omitted.

Reference numeral 40 in the figure denotes a hanging piece. The hanging piece 40 is formed integrally with the ejection head 11 via the hinge portion 41. In the present invention, the hinge portion 41 is formed in a thin plate shape so as to be easily torn.
In the figure, reference numeral 42 denotes a lower end of the hanging piece 40, which is formed in a hook shape.

On the other hand, reference numeral 34 in the figure denotes an edge portion with which the lower end 42 of the hanging piece 40 can be engaged. In this embodiment, the edge portion is provided on the upper cap 4 in the dispenser main body 1.

[0023]

[Effects of the Invention] The sealing structure of the liquid dispenser according to the present invention having the above configuration has the following specific effects. A swingable hanging piece is integrally provided on the discharge head of the stem head, and the sealing action is performed by engaging the hanging piece with the dispenser body, so that separate parts as in the prior art are not required. Once the lock is released, the hanging piece is pulled apart, so that it can be easily determined that it has been opened outwardly, and a reliable sealing effect can be obtained. Since the sealing step can be realized only by pushing or engaging the hanging piece with the dispenser main body, there is no possibility that the productivity of the product is hindered unlike the prior art. Since the sealing can be performed at any position in the locked state, there is no possibility that the strict alignment is performed and the productivity of the finished product is not hindered.

[Brief description of the drawings]

FIG. 1 is a sectional view of a liquid dispenser in which the present invention is implemented.

FIG. 2 is a rear view of the entire liquid dispenser according to the first invention.

FIG. 3 is a perspective view of a hanging piece part according to the first embodiment;

FIG. 4 is a side view, partially cut away, of a main part of the above.

FIG. 5 is a partially cut-away side view of a main part of the above.

FIG. 6 is a perspective view of a hanging piece in the second invention.

FIG. 7 is a partially cut-away side view of a main part of the embodiment.

FIG. 8 is a side view of the essential part, partially cut away;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dispenser main body 4a Screw groove 10 Stem 11 Discharge head 11a Screw groove 30 Hanging piece 32 Inserting plate 33 Enlarged portion 35 Slit 40 Hanging piece 42 Lower end of (hanging piece)

Claims (3)

(57) [Scope of request for utility model registration] 1. A reciprocating pump type liquid dispenser in which a locking screw groove is provided on both sides so that the stem can be locked in a state where the stem is pushed down with respect to the dispenser body. A freely hanging piece is provided integrally via a hinge formed in a thin plate shape so that it can be torn off.In addition, an insertion plate provided with an enlarged portion at the tip is provided on the back side of this hanging piece. A sealing structure for a liquid dispenser, characterized in that a slit is provided on a side of the dispenser main body, through which an insertion plate of a hanging piece can pass when the stem is locked. 2. A thin plate which can be broken by inserting a hanging piece insertion plate behind the slit of the dispenser body.
The sealing structure of the liquid dispenser according to the above. 3. A reciprocating pump type liquid dispenser in which a locking screw groove is provided on both sides so that the stem can be locked in a state where the stem is pushed down with respect to the dispenser body. pull the擺動freely suspended piece molded like a hook a
It is provided integrally via a hinge portion formed in a thin plate shape so that it can be cut off , while an edge portion with which the lower end of the hanging piece can be engaged in the locked state of the stem is provided on the dispenser main body side. The sealing structure of the liquid dispenser.