JP2009062058A - Pump dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a bottom lid from being easily detached even when it is subjected to an impact in a pump dispenser having a container constituted of a container body and a container bottom lid to close its bottom opening, and the slide valve inserted into the container body so as to rise in the container body as the amount of the content stored in the container is reduced as the content is consumed. <P>SOLUTION: A plurality of reinforcing ribs 25 for reinforcing a fitting cylindrical part 23 of a container bottom lid 20 are provided in the radial direction of the fitting cylindrical part. A valve butting part 24 is concentrically provided on the inner side of the fitting cylindrical part, and the end of the valve butting part is butted against a slide valve 30 during the assembly. A through hole 21 is formed in the bottom part 22. Not a single but a plurality of stages of projecting parts such as body projecting parts 16, 17 and bottom lid projecting parts 26, 27 which are engaged with each other to retain the container bottom lid are formed on both the inner circumference of a bottom opening 13 of the container body 12 and the outer circumference of the fitting cylindrical part of the container bottom lid. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  According to the present invention, a container is constituted by a container main body having a mouth and a container bottom lid that closes the cylindrical bottom opening, and a slide valve is slidably inserted into the container main body of the container. A pump-type injection device is attached, the inside of the container is closed with the pump-type injection device and the slide valve, the contents are stored in the closed space, and the pump-type injection device is pumped up by operating the pump-type injection device when in use. The present invention relates to a pump-type injector that injects outside and raises the slide valve within the container body as the contents of the container decrease.

  Conventionally, in a pump type injector, a slide valve is provided in the container, and as the contents of the container are reduced by use, the slide valve is placed in the container by the amount that the pressure in the container is reduced and the volume is reduced. There is something that made you rise. In some of such injectors, the bottom of the container is opened so that a slide valve can be inserted into the container from there.

  In this type of injector, a container bottom lid is attached to the lower part of the container body so that the contents do not leak out from the bottom opening of the container and the slide valve cannot be touched through the bottom opening of the container. The bottom opening of the container was plugged. The container bottom lid does not need to be opened and closed later, and is inexpensive, so it is attached to the container body with a so-called “patching” that fits irregularities.

JP 2002-205784 A

  However, in the conventional injector as described above, the bottom cover is removed due to impact, for example, when it is dropped, the container bottom cover is damaged, the container bottom cover is lost, or the bottom of the container main body is opened through the bottom opening. There were problems such as leakage of contents. In order to solve such a problem, some conventional injectors have doubled so-called “pachin”, but they are still insufficient, and there is a possibility that the bottom lid may come off due to impact. .

  Accordingly, a first object of the present invention is to form a container with a container main body and a container bottom lid that closes the bottom opening, and as the contents stored in the container decrease as a result of use, the inside of the container main body rises. In the pump type injector in which the slide valve is inserted into the container body, the bottom lid is not easily removed even if it receives an impact.

  The second object of the present invention is to simplify the positioning of the initial position of the slide valve in such a pump-type injector.

  A third object of the present invention is to smoothly move the slide valve in such a pump type injector.

  A fourth object of the present invention is to prevent the bottom lid from easily coming off even under impact in such a pump-type injector.

  A fifth object of the present invention is to make it easy to fit the container bottom lid to the lower part of the container body and to attach the container bottom lid firmly and securely to the lower part of the container body. There is to do.

Therefore, the invention according to claim 1 is to achieve the above first object.
A container body having a mouth portion and a container bottom lid that closes the cylindrical bottom opening constitute a container, and a slide valve is slidably inserted into the container body of the container, and a pump-type injection device is placed in the mouth portion. Attach and close the container with the pump type injection device and slide valve, put the contents into the closed space, operate the pump type injection device during use, suck up the contents and inject it to the outside, and close the space In the pump type injector that raises the slide valve in the container body as the contents of
Attach the outer periphery of the fitting cylinder part of the container bottom lid to the inner periphery of the bottom opening of the container body, attach the container bottom lid to the lower part of the container body, and reinforce the reinforcing ribs that reinforce the fitting cylinder part of the container bottom lid, for example, radially A plurality of fitting cylinders are provided in the radial direction.

  According to a second aspect of the present invention, in order to achieve the second object described above, in the pump type injector according to the first aspect, a valve abutting portion is provided on the container bottom lid, and the tip of the valve abutting portion is provided. Is abutted against the slide valve.

  According to a third aspect of the present invention, in order to achieve the third object described above, in the pump type injector according to the first or second aspect, the container bottom lid, the slide valve, It is characterized in that a through-hole that makes atmospheric pressure in the container between is formed.

  According to a fourth aspect of the present invention, in order to achieve the fourth object described above, in the pump type injector according to any one of the first to third aspects, a container bottom lid is formed on the inner periphery of the bottom opening of the container main body. When the container bottom cover is attached to the lower part of the container body by fitting the outer periphery of the fitting cylinder part, the protrusions that engage with each other to prevent the container bottom cover from falling off are the bottom opening inner periphery of the container body and the container bottom cover. It is characterized in that it is formed in a plurality of stages instead of one stage on both outer circumferences of the fitting cylinder part.

  According to a fifth aspect of the present invention, in order to achieve the fifth object described above, in the pump type injector according to the fourth aspect, a plurality of stages of main body protrusions formed on the inner periphery of the bottom opening of the container main body are opened. The top end side in the direction has a larger diameter, and a plurality of bottom cover convex portions formed on the outer periphery of the fitting cylinder portion of the container bottom lid have a smaller diameter toward the front end side in the fitting direction.

  According to the present invention, since the plurality of reinforcing ribs that reinforce the fitting cylinder part are provided in the container bottom lid in the radial direction of the fitting cylinder part, the fitting cylinder part is easily deformed even when subjected to an impact. Prevent the container bottom cover from being damaged, the container bottom cover from being lost, and the contents from leaking out from the bottom of the container body through the bottom opening. Can do.

  According to the invention described in claim 2, since the valve abutting portion is provided on the container bottom lid and the tip of the valve abutting portion is abutted against the slide valve, the tip of the valve abutting portion is abutted against the slide valve. By applying, the initial position of the slide valve can be easily determined. In addition, this maintains the space between the container bottom lid and the slide valve, and even if the bottom opening of the container body swells when the container bottom lid is fitted to the container body, the bulge is The airtightness between can be prevented from being affected.

  According to the third aspect of the present invention, a through-hole is formed in the bottom of the container bottom lid so that the inside of the container is at atmospheric pressure between the container bottom lid and the slide valve. The slide valve can be moved smoothly by sucking.

  According to the invention described in claim 4, when the outer periphery of the fitting tube portion of the container bottom lid is fitted to the inner periphery of the bottom opening of the container main body and the container bottom lid is attached to the lower portion of the container main body, they are engaged with each other. Since the convex portion that prevents the container bottom lid from coming off is formed in a plurality of stages on both the inner periphery of the bottom opening of the container main body and the outer periphery of the fitting cylinder portion of the container bottom lid, the fitting cylinder Prevents parts from being easily deformed, prevents them from being easily removed from the container body, and stops with multiple steps of so-called snapping so that the container bottom lid does not easily come off even when subjected to an impact. be able to.

  According to the fifth aspect of the present invention, the plurality of main body convex portions formed on the inner periphery of the bottom opening of the container main body have a larger inner diameter toward the opening direction front end and are formed on the outer periphery of the fitting tube portion of the container bottom lid. Since the outer diameter of the bottom cover convex part of the multi-step is formed so that the outer diameter becomes smaller toward the front end side in the fitting direction, the outer periphery of the fitting cylinder part of the container bottom cover is fitted to the inner periphery of the bottom opening of the container body. When the container bottom cover is attached to the container body, the container bottom cover can be attached easily after being temporarily fitted, and the container bottom cover can be firmly and securely attached to the lower part of the container main body by multi-stage engagement.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 shows a central follower section when the so-called airless pump injector according to the present invention is not used. In the figure, reference numeral 10 denotes a container having a mouth portion 11, and 40 denotes a pump type injection device attached to the mouth portion 11 of the container 10.

  The container 10 includes a container main body 12 and a container bottom lid 20 that closes the cylindrical bottom opening 13. As shown in FIG. 2, the container body 12 is formed by narrowing the upper portion of the cylindrical portion 14 to form a small-diameter mouth portion 11, and providing an external thread 15 on the outer peripheral surface thereof, while opening the bottom portion of the cylindrical portion 14 and opening the bottom portion thereof. Main body convex portions 16 and 17 projecting in the circumferential direction are formed on the inner peripheral surface of the opening 13 in two upper and lower stages.

  As shown in FIG. 3, a slide valve 30 is slidably inserted up and down inside the container body 12. The slide valve 30 includes a top portion 32 having an upward concave portion 31 at the center, an outer cylindrical portion 33 having a downward direction from the outer periphery of the top portion 32, an inner cylindrical portion 34 shorter than the outer cylindrical portion 33 provided downward from the top portion 32, A rib 35 is provided between the inner cylinder portion 34 and the outer cylinder portion 33 in the radial direction. And the upper edge outer periphery 36 and the lower edge outer periphery 37 of the outer cylinder part 33 are closely_contact | adhered to the inner peripheral surface of the cylinder part 14, and they are formed in airtight contact between them.

  As shown in FIGS. 4A to 4C, the container bottom lid 20 includes a disc-shaped bottom portion 22 having a through hole 21, a fitting cylinder portion 23 rising from the outer periphery of the bottom portion 22, and a fitting thereof A valve abutting portion 24 provided concentrically with the fitting tube portion 23 inside the tube portion 23 and rising from the bottom portion 22, and a plurality of the fitting tube portions 23 provided radially in the radial direction of the fitting tube portion 23. It consists of reinforcing ribs 25 to reinforce. The valve abutting portion 24 is formed higher than the fitting cylinder portion 23. Further, bottom cover convex portions 26 and 27 protruding in the circumferential direction are provided on the outer peripheral surface of the fitting cylinder portion 23 in two upper and lower stages.

  And as shown in FIG. 3, the outer periphery of the fitting cylinder part 23 of the container bottom cover 20 is fitted to the inner periphery of the bottom opening 13 of the container body 12, and the outer peripheral edge 28 of the bottom part 22 of the container bottom cover 20 is attached to the container body. The main body convex portion 16 and the bottom lid convex portion 26 and the main body convex portion 17 and the bottom lid convex portion 27 are engaged with each other by so-called snapping to prevent the container main body 12 from coming off. A container bottom lid 20 is attached to the lower part of the container. At this time, the tip of the valve abutting portion 24 is abutted against the slide valve 30, and the initial position of the slide valve 30 is positioned during assembly.

  On the other hand, as shown in FIG. 1, the pump-type injection device 40 inserts a ball valve 42 into the cylinder 41 to close the inlet opening 43 at the bottom of the cylinder 41, and then inserts a biasing spring 44. After that, a stem 48 having a discharge passage 47 is inserted together with the piston 46 to which the elastic valve 45 is attached, and the stem 48 having a discharge passage 47 is put inside, and is prevented from being detached by a retaining ring 49. It becomes.

  Then, a packing 52 is sandwiched between the flange portion 51 and the mouth portion 11, and a female screw 53 formed on the inner peripheral surface of the screw cap 50 is screwed to the male screw 15 of the mouth portion 11, and then the injection button 54 is attached to the stem 48. Install. An opening / closing pin 60 is urged by a return spring 58 to attach a nozzle cap 56 to the injection button 54 at a position communicating with the ejection passage 55, and an opening / closing pin for urging the nozzle 57 of the nozzle cap 56 by the return spring 58. 60 is closed.

  Then, the inside of the container 10 is closed by the pump type injection device 40 and the slide valve 30 to form the closed space A. After the contents are put into the closed space A, the injection button 54 is put in hand during use. , And the stem 48 is pushed into the cylinder 41 to move the piston 46 downward against the biasing spring 44. Then, the pressure in the pressure chamber 62 in the cylinder 41 rises, and eventually the elastic valve 45 is opened as shown in FIG. 5, and the contents of the pressure chamber 62 are put into the ejection passage 55 through the discharge passage 47 and inside the nozzle cap 56. After a while, the opening / closing pin 60 is opened against the return spring 58, and the contents of the pressure chamber 62 are ejected from the nozzle 57 to the outside.

  When the hand is released from the injection button 54, as shown in FIG. 6, the stem 48 is pushed up together with the piston 46 by the biasing force of the biasing spring 44, the pressure in the pressure chamber 62 is lowered, the elastic valve 45 is closed and the ball valve 42 is closed. The contents of the enclosed space A are sucked up into the pressure chamber 62 through the inlet opening 43, and as the contents of the enclosed space A decrease, the inside of the container 10 becomes negative, and the slide valve 30 is caused by the pressure difference between the inside and outside of the slide valve 30. 30 ascends the inside of the container body 12 while sucking outside air from the through hole 21. Thereafter, as shown in FIG. 1, the opening / closing pin 60 is closed by the urging force of the return spring 58 to close the injection hole 57.

  In the illustrated example, the container bottom lid 20 is provided with a plurality of reinforcing ribs 25 for reinforcing the fitting cylinder part 23 in the radial direction of the fitting cylinder part 23, so that the fitting cylinder part 23 is not affected by an impact. The container bottom lid 20 is damaged so as not to be easily deformed and not easily detached from the container body 12, the container bottom lid 20 is lost, or the contents leak from the bottom of the container body 12 through the bottom opening 13. Can be prevented.

  The container bottom lid 20 is provided with a valve abutting portion 24 concentrically with the inside of the fitting cylinder portion 23, and the tip of the valve abutting portion 24 abuts against the slide valve 30, so that the valve abutting portion By abutting the tip of 24 against the slide valve 30, the initial position of the slide valve 30 can be easily positioned during assembly.

  Further, since a through hole 21 is formed in the bottom portion 22 of the container bottom lid 20 so that the inside of the container is at atmospheric pressure between the container bottom lid and the slide valve, outside air is sucked through the through hole 21 to slide valve 30. Can move smoothly.

  Further, when the outer periphery of the fitting tube portion 23 of the container bottom lid 20 is fitted to the inner periphery of the bottom opening 13 of the container main body 12 and the container bottom lid 20 is attached to the lower portion of the container main body 12, the container bottom lid 20 is engaged with each other. The convex portions such as the main body convex portions 16, 17 and the bottom lid convex portions 26, 27 that prevent the lid 20 from falling off are provided on both the inner periphery of the bottom opening 13 of the container main body 12 and the outer periphery of the fitting cylinder portion 23 of the container bottom lid 20. In addition, when formed in a plurality of stages rather than a single stage, the fitting cylinder portion 23 is not easily deformed even when subjected to an impact, so that it is not easily detached from the container body 12, and a plurality of so-called pachinka The container bottom lid 20 can be prevented from being easily removed even when subjected to an impact.

  Incidentally, in the illustrated example, as shown in FIG. 7A, the upper and lower two-stage main body convex portions 16 and 17 formed on the inner periphery of the bottom opening 13 of the container main body 12 have a larger inner diameter toward the front end side in the opening direction. The main body convex portion 17 located on the front end side in the opening direction from the convex portion 16 is formed so as to have a larger inner diameter. Further, the upper and lower two-stage bottom lid convex portions 26 and 27 formed on the outer periphery of the fitting cylinder portion 23 of the container bottom lid 20 have a smaller outer diameter toward the distal end in the fitting direction, that is, the distal end in the fitting direction than the bottom lid convex portion 27. The bottom cover convex portion 26 on the side is formed so that the outer diameter becomes smaller. In this example, the inner diameter of the main body convex portion 17 and the outer diameter of the bottom cover convex portion 26 are formed to be substantially equal.

  Then, when the outer periphery of the fitting tube portion 23 of the container bottom cover 20 is fitted to the inner periphery of the bottom opening 13 of the container body 12 and the container bottom cover 20 is attached to the lower part of the container body 12, first, as shown in FIG. After the bottom cover convex part 26 has passed lightly over the main body convex part 17 and is temporarily fitted, as shown in FIG. The container bottom lid 20 can be firmly attached to the lower part of the container.

It is a center longitudinal cross-sectional view at the time of non-use in the pump type injector by this invention. It is a center longitudinal cross-sectional view of the container main body of the container used with the pump type injector. It is a bottom part expanded sectional view of the pump type injector. (A) is a top view of the container bottom cover of the container used with the pump type injector, (B) is a front view, and (C) is a bottom view. It is a center longitudinal cross-sectional view at the time of pushing in the injection button of the same pump type injection device. It is the center longitudinal cross-sectional view in the state where the hand was released after pushing. (A) thru | or (C) is the elements on larger scale which show the state which attaches the fitting cylinder part outer periphery of a container bottom cover to the bottom opening inner periphery of a container main body, and attaches a container bottom cover to the lower part of a container main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container 11 Mouth part 12 Container main body 13 Bottom opening of container main body 16, 17 Main body convex part of container main body 20 Container bottom cover 21 Through hole 22 Bottom of container bottom cover 23 Fit cylinder part of container bottom cover 24 Container bottom cover Valve abutting portion 25 Reinforcing rib of container bottom cover 26, 27 Bottom cover convex part of container bottom cover 30 Slide valve 40 Pump type injection device A Closed space

Claims (5)

A container body having a mouth portion and a container bottom lid that closes the cylindrical bottom opening constitute a container, and a slide valve is slidably inserted into the container body of the container, and a pump-type injection device is inserted into the mouth portion. The pump-type injection device and the slide valve close the inside of the container and put the contents into the closed space, and when in use, the pump-type injection device is operated to suck up the contents and inject them to the outside. In the pump type injector that raises the slide valve in the container body as the contents of the enclosed space decrease,
Reinforcing ribs for fitting the outer periphery of the fitting cylinder portion of the container bottom lid to the inner periphery of the bottom opening of the container main body, attaching the container bottom lid to the lower portion of the container main body, and reinforcing the fitting cylinder portion of the container bottom lid A pump-type injector characterized in that a plurality of nozzles are provided in the radial direction of the fitting tube portion.   The pump type injector according to claim 1, wherein a valve abutting portion is provided on the container bottom lid, and a tip of the valve abutting portion is abutted against the slide valve.   The pump-type injection according to claim 1 or 2, wherein a through-hole is formed in the bottom portion of the container bottom lid so that the inside of the container is at atmospheric pressure between the container bottom lid and the slide valve. vessel.   When the fitting cylinder part outer periphery of the container bottom lid is fitted to the inner periphery of the bottom opening of the container main body and the container bottom lid is attached to the lower part of the container main body, they engage with each other and come out of the container bottom lid. The convex portion to be stopped is formed in a plurality of stages on both the inner periphery of the bottom opening of the container main body and the outer periphery of the fitting tube portion of the container bottom lid. The pump type injector described in 1.   A plurality of steps of the main body convex portion formed on the inner periphery of the bottom opening of the container main body has a larger inner diameter toward the distal end in the opening direction, and a plurality of steps of the bottom cover convex portion formed on the outer periphery of the fitting tube portion of the container bottom lid are fitted. The pump type injector according to claim 4, wherein the outer diameter is smaller toward the front end in the direction.

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