JP2010274963A - Thin-walled bottle with pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of unseemly deformation of a bottle body due to decompression by promptly and reliably extinguishing pressure fluctuation in a decompression direction of a synthetic resin-made thin-walled blow-molded bottle body. <P>SOLUTION: A pump 10 is attached to the synthetic resin-made thin-walled blow-molded bottle body 1. A wrested piece 5 to make a suction hole 9 is added to a shoulder 3 of the bottle body 1, and a separately prepared suction valve 15 is tightly fitted and assembled into the suction hole 9 made by wresting the wrested piece 5. The generation of deformation of the bottle body 1 due to decompression is prevented by opening the suction valve 15 in accordance with the pressure fluctuation in the decompression direction which is generated in the bottle body 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a thin bottle with a pump made of blown synthetic resin.

  As a liquid storage container, many bottles with a pump that can attach a manual pump to a blow molded bottle made of a synthetic resin and discharge a substantially fixed amount of contents each time a discharge operation is performed are used.

  In this bottle with a pump, the sealing of the bottle is achieved by an assembled pump, and as disclosed in, for example, Japanese Patent Laid-Open No. 2000-077076, the inside of the bottle generated by discharging the content liquid is used. The reduced pressure is extinguished by sucking outside air through an air flow path formed in the pump.

  A pump dispenser having a projecting portion projecting inwardly from a cylindrical body located inside the mounting portion and having its tip brought into contact with the stem outer peripheral surface portion, at the center in the vertical direction of the stem outer peripheral surface portion slidably contacting the projecting portion By forming a recess and preventing the tip of the projection from coming into contact with the outer peripheral surface of the stem at the recess forming portion, it is possible to introduce outside air into the container through the air hole.

  Therefore, when the protrusion is positioned at the recess forming portion, an air flow path is formed between the inside and outside of the container regardless of the operation of the protrusion, so that the thickness of the container body and the degree of decompression are not affected. Air can be introduced, whereby the container body can be thinned and the decompression inside the container body can be reliably eliminated.

JP 2002-086029 A

  However, in the above-described prior art, since the outside air is sucked through the air flow path in accordance with the reduced pressure generated in the container body, the container body must have rigidity capable of generating a reduced pressure inside. For this reason, there is a problem that a thickness capable of providing this rigidity is required, which is a serious adverse effect on the thinning of the container body.

  Therefore, the present invention was devised to solve the above-described problems in the prior art, and it is a technical problem to easily open the inside of the bottle body when a pressure fluctuation occurs in the pressure reducing direction in the bottle body. Therefore, an object of the present invention is to obtain a quick and reliable disappearance of the bottle body formed into a thin wall, thereby preventing the occurrence of decompression deformation.

The main configuration of the present invention for solving the above technical problem is:
It is a thin-walled bottle with a pump in which a manual pump is assembled to a blow-molded thin-walled synthetic resin bottle body.
A part of the outer surface of the shoulder of the bottle body is integrally provided with a tear-off piece that opens a suction hole by tearing off,
In the intake hole opened by tearing off this stripping piece, a separately prepared soft elastic material intake valve is fitted and fixed from the outside of the bottle body,
It is in.

  The intake valve opens according to the pressure fluctuation in the pressure reducing direction generated in the bottle body, but prevents the outflow of the contents.

  When the thin bottle with a pump is not used, the bottle is sealed with a stripping piece integrated with the bottle body.

  When using a thin bottle with a pump, open the intake hole by tearing off the stripping piece, and fitting and fixing the intake valve prepared separately in this intake hole by a simple push operation, and actually use the thin bottle with a pump State.

  As described above, the switching to the actual use state of the thin bottle with a pump, that is, the opening of the intake hole can be easily achieved by tearing off the tear piece.

  The intake valve attached to the intake hole opens directly in response to the pressure fluctuation in the decompression direction generated in the bottle body, so if the pressure fluctuation in the decompression direction occurs in the bottle body, it opens quickly. Since the outside air is allowed to pass through to eliminate pressure fluctuations in the decompression direction and prevent the outflow of the contents, even if the bottle body is accidentally overturned, the contents are leaked illegally from the intake valve. There is nothing.

  In this way, since the intake valve opens directly in response to pressure fluctuations in the pressure reducing direction in the bottle body, the inside of the bottle body is rarely in a reduced pressure state, thereby preventing unauthorized deformation due to pressure reduction in the thin bottle body. In addition, the bottle body can be made thinner.

  Since the intake hole is formed in the shoulder facing the head space of the bottle body, the intake valve fitted and fixed in this intake hole does not touch the content liquid in a normal state, thereby stable valve operation It can be carried out.

  In addition, since the tear piece is attached to the outer surface of the shoulder of the bottle body, it is in a conspicuous state as the appearance of the thin bottle with a pump as a product. Can be easily checked.

  In addition to the main configuration described above, another configuration of the present invention includes a gripping portion that can be easily picked with a fingertip, and a cylindrical connecting tube portion that connects the gripping portion and the opening edge of the intake hole. In this configuration, a weakened portion is formed at a connection portion between the opening edge portion of the intake hole and the connection cylinder portion.

  In the case where the tear piece is composed of the knob portion, the connecting cylinder portion, and the weakened portion, it becomes easy to tear off the tear piece by the knob piece, so that the opening of the intake hole can be easily opened and the appearance In addition, the tear-off piece can be made conspicuous, and the proper intake hole can be reliably formed by tearing off the tear-off piece by combining the connecting tube portion and the weakening portion.

  In addition to the main configuration described above, another configuration of the present invention includes a cylindrical main body portion that is tightly fitted into the air intake hole, and a hook piece that is provided around the outer opening end of the main body portion in an outer casing shape. An intake valve is constituted by a locking protrusion projecting from the outer peripheral surface of the main body and a valve function section connected in a conical cylindrical shape from the inner opening end of the main body, and the flange piece is opened to the intake hole. The limit position with the fitting assembly of the intake valve is set by the contact with the hole edge, and the escape protrusion of the intake valve is prevented by locking the locking protrusion to the opening edge of the intake hole. Is provided with a slit that exhibits a valve function at the tip of the spire.

  In the case of an intake valve comprising a main part, a flange piece, a locking projection, and a valve function part, the intake valve is guided into the intake hole by the valve function part and simply pushed in. It can be fitted and fixed, and the valve function is exhibited by the slit provided at the tip of the cone-shaped spire, so that a check valve action that can be easily opened can be obtained.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the present invention, since the intake hole can be easily opened by tearing off the tear-off piece, it is possible to easily switch the thin bottle with a pump from the unused state to the actual use state.

  Since the bottle main body is hardly deformed by decompression, the bottle main body can be sufficiently thinned within a range in which the self-supporting function of the bottle main body can be maintained.

  Since a dedicated intake valve is provided as an intake function portion, a sufficient and safe intake function can be obtained, and thus safe and proper operation can be obtained even for a thin bottle.

  Since it is provided in a conspicuous part of the bottle main body, the actual use state can be easily recognized by the presence or absence of the stripping piece, so that a thin bottle with a pump as a product can be purchased with confidence.

  In the case where the knob part, the connecting cylinder part, and the weakening part constitute the tear-off piece, the unused state can be easily confirmed and the proper formation of the intake function part can be obtained. .

  In the case where the intake valve is constituted by the main body portion, the flange piece, the locking protrusion, and the valve function portion, an intake function portion that can be easily opened can be formed. It is possible to have a check valve function with a simple configuration, whereby a safer actual use state of the thin bottle with a pump can be obtained.

It is a side view of the non-use state partially broken of one embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a circled portion in FIG. 1. It is a side view of the use condition partially broken in the embodiment example shown in FIG. FIG. 4 is an enlarged cross-sectional view of a circled portion in FIG. 3. FIG. 4 is a rear view of the embodiment shown in FIG. 3.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a partially broken side view of a bottle with a pump according to the present invention in a partially broken state. The bottle body 1 is thin, and the degree is a value at which decompression cannot be eliminated (average thickness 0). .8 mm or less), and a value within a range in which the self-supporting function can be maintained by the synthetic resin (preferably about 0.3 to 0.4 mm), and the bottle body 1 has a bottom portion constituting a leg portion at the lower end. At the upper end of the cylindrical body portion 4 which is continuously provided and closed, the cylindrical mouth tube portion 2 in which a thread is engraved on the outer peripheral surface is erected through an elliptical cylindrical shoulder portion 3 whose diameter is reduced upward. It is connected continuously.

  A pump 10 closely screwed and assembled to the mouth tube portion 2 of the bottle body 1 includes a nozzle head 11 as an operation portion, a nozzle 12 extending laterally from the nozzle head 11, and the pump 10 as a bottle. A cap 14 that is assembled to the main body 1 by screwing and a neck cylinder 13 that connects the nozzle head 11 to the pump function unit (not shown) that is assembled to the cap 14 so as to be movable up and down. Configured.

  In the unused state of the pump 10 shown in FIG. 1, a tear piece 5 for opening an intake hole 9 is formed on the outer surface of the shoulder portion 3 of the bottle body 1 by being integrally crushed in the mold. However, the tear-off piece 5 (see FIG. 2) includes a knob portion 6 that can be easily picked with a fingertip, and a cylindrical piece-like connecting cylinder portion 7 that connects the knob portion 6 and the opening edge of the intake hole 9; The connecting tube portion 7 includes a thin weakened portion 8 formed at a location where the connecting tube portion 7 is connected to the shoulder portion 3.

  Since the stripping piece 5 is positioned in a posture protruding from the outer surface of the shoulder 3 of the bottle body 1, it is positioned in the most conspicuous state on the surface of the thin bottle with a pump as a product. By confirming or visually confirming that the stripping piece 5 is integrally attached to the bottle body 1, it is possible to easily confirm that the thin bottle with a pump is in an unused state.

  In the unused state of the pump 10 shown in FIG. 1, the nozzle head 11 is screwed to the assembled cap 14 and fixed at the lower limit position. The discharge operation of the contents is disabled, and the occupied volume during storage and transport is reduced.

  In this way, bottles with pumps as commodities are not allowed to be discharged before the consumer purchases them, so that unauthorized discharge of the contents does not occur and safe handling can be obtained. In addition, since the occupied volume is small, efficient storage and transportation can be obtained.

  When using the purchased thin bottle with a pump (refer to FIG. 3 below), the screwing of the nozzle head 11 to the cap 14 with assembly is released, the pump 10 is brought into an operable state, and the knob 6 with the fingertip is used. The intake piece 9 is opened by removing the stripping piece 5, and an intake valve 15 separately prepared in the opened intake hole 9 is tightly inserted and fixed from the outside of the bottle body 1.

  The intake valve 15 (see FIG. 4) is an integrally molded product of a soft elastic material such as a synthetic resin rubber, natural rubber, or an elastomer represented by silicone rubber. The hook-shaped flange 17 is provided around the outer peripheral surface of the main body 16 and is spaced from the flange 17 by a distance equal to or slightly smaller than the thickness of the shoulder 3. A portion 18 is protruded, and a conical cylindrical valve function portion 19 is connected to the inner opening end of the main portion 16.

  The main body portion 16 has an outer diameter that is equal to or slightly larger than the opening diameter of the intake hole 9, so that the main body portion 16 is closely fitted into the intake hole 9, and the flange 17 is fitted into the intake hole 9. The limit position is set, and the intake valve 15 is prevented from passing through the intake hole 9 and falling into the bottle body 1, and the locking projection 18 is fitted into the intake hole 9. The valve function part 19 is formed with a slit 20 that exerts a valve action at the tip of the spire. The conical cylinder shape of the valve function part 19 is fitted into the intake hole 9 of the intake valve 15. It will guide the assembly.

  When the pressure fluctuation in the pressure reducing direction is generated in the bottle body 1 by operating the pump 10 to discharge the contents, the intake valve 15 is configured by the slit 20 quickly and easily in response to the pressure fluctuation. By opening the valve function, the outside air is introduced into the bottle body 1, and the pressure fluctuation in the pressure reducing direction generated thereby is quickly eliminated, so that the bottle body 1 is not deformed under reduced pressure.

  Further, since the slit 20 of the intake valve 15 is formed at the spire-shaped tip of the valve function unit 19, it acts as a check valve when pressure is applied from the inside of the bottle body 1. This prevents scattering of the volatile components of the contents from the intake valve 15.

  In the case of the illustrated embodiment, the intake valve 15 has only its flange 17 exposed outside the bottle body 1 (see FIGS. 3 and 5), so that the assembled intake valve 15 is conspicuous. There is no fear of deteriorating the appearance of the main body 1.

  Since the bottle main body 1 is provided with a dedicated functional portion for intake air, the pump 10 assembled to the bottle main body 1 can be configured to have no leak passage for taking outside air into the bottle main body 1. .

  By making the assembled pump 10 without a leak passage, the structure of the pump 10 can be simplified by the amount not having the leak passage.

  In addition, although the structure of the valve function part by the slit 20 was demonstrated as an illustration Example of the intake valve 15, the structure of the intake valve 15 is not limited to this, The general has a valve piece which carries out rocking displacement. A check valve structure may be used. In short, any check valve structure may be used as long as the reduced pressure generated in the bottle body 1 can be quickly extinguished.

  As described above, the combination of the tear-off piece and the intake valve in the present invention ensures high-precision sealing when the bottle body is not in use, and the pressure in the pressure reducing direction generated in the bottle body during actual use. It is intended to quickly and surely eliminate fluctuations, and as a technology that stably secures sealing when not in use and hates the generation of reduced pressure in the bottle body during actual use, a wide range of usage can be expected.

DESCRIPTION OF SYMBOLS 1; Bottle main body 2; Mouth part 3; Shoulder part 4; Trunk part 5; Stripping piece 6; Knob part 7; Connection cylinder part 8; Weak part 9; Intake hole 10; Neck tube 14; Cap 15 with assembly; Intake valve 16; Main body portion 17; Eaves portion 18; Locking projection 19; Valve function portion 20;

Claims (3)

A thin bottle with a pump in which a manual pump is attached to a thin plastic resin bottle body that is blow-molded, and an intake hole is opened by tearing off a part of the outer surface of the shoulder portion of the bottle body A suction piece made of a soft elastic material, which is separately prepared, is fitted and fixed from the outside of the bottle body into the suction hole opened by tearing off the tear piece, and the suction valve is fixed. A thin-walled bottle with a pump that opens according to the pressure fluctuation in the decompression direction generated in the bottle body, but prevents the outflow of the contents. A tear-off piece is formed from a knob portion that can be easily picked by a fingertip, and a cylindrical connection cylinder portion that connects the knob portion and the opening edge portion of the intake hole, and the opening edge portion and the connection cylinder portion of the intake hole, The thin-walled bottle with a pump according to claim 1, wherein a weakened portion is formed in the connecting portion. A cylindrical main body portion that is tightly fitted into the air intake hole, a flange piece that is provided around the outer opening of the main body portion, and a locking protrusion that protrudes from the outer peripheral surface of the main body portion, An intake valve is constituted by a valve function part connected in a conical cylindrical shape from the inner opening end of the main part, and the limit position with the fitting assembly of the intake valve is determined by abutting the flange piece against the opening edge of the intake hole. It is assumed that the locking projection is locked to the opening edge of the intake hole to prevent the intake valve from coming out, and the valve function portion is provided with a slit that exhibits a valve function at the tip of the spire. The thin-walled bottle with a pump according to claim 1 or 2 provided.

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