JP2008087782A - Push-down head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily open/close a leading end opening of a nozzle before and after the ejection of contents. <P>SOLUTION: In this push-down head 10 which comprises a push-down head body 14 and a push-down cover 19, a push-down portion 20 is provided vertically on the undersurface of the push-down plate 16 of the push-down cover 19; and a lower end of the push-down portion 20 faces a top surface of a sheet member 21 composed of a rubbery elastic body provided in a stretched state along an upper end opening surface of a surrounding tubular portion 12 of the push-down head body 14. When the push-down plate 16 is pushed downward, the push-down portion 20 makes the sheet member 21 deflected downward in an elastic state. Thus, the push-down plate 16 and the push-down portion 20 are pushed down, and a connecting plate 17 of the push-down cover 19 is moved upward with a cover plate 18, so that the leading end opening 13a of the nozzle 13 can be opened. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pressing head.

The pressing head is attached to the upper end of a stem that is erected upward from the inside of a cylinder suspended in the container body as shown in, for example, Patent Document 1 below, and pushes down the pressing plate. The cylindrical piston connected to the lower end of the stem is lowered together with the stem, pressurizes the contents in the cylinder, and opens the discharge valve built in the stem, thereby discharging the contents from the nozzle. ing.
JP 2003-137329 A

  By the way, in this type of pressing head, if the contents are left in the nozzle for a long time, the liquid content of the contents evaporates and the solid components in the contents adhere to the inner surface of the nozzle, and the flow in the nozzle In some cases, the path narrowed, resulting in poor discharge. Such inconvenience can be solved by, for example, fitting the small lid to the opening at the tip of the nozzle so as to be detachable, but it is troublesome because the small lid has to be detached and attached each time it is used.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pressing head that can easily open and close the front end opening of the nozzle before and after discharging the contents.

In order to solve the above-mentioned problems and achieve such an object, the pressing head of the present invention is provided at the upper end of a stem that is erected in an upward biased state from the inside of a cylinder suspended in the container body. A pressing head to be mounted, wherein a bottomed cylindrical mounting cylinder part whose lower end opening part is mounted on the upper end of the stem, a surrounding cylinder part surrounding the mounting cylinder part from the outside in the radial direction, A nozzle that communicates with the inside of the stem and that protrudes radially outward from the outer peripheral surface of the mounting tube portion, and whose tip opening is positioned radially outward of the surrounding tube portion. A pressing head body is provided, a pressing plate provided to face the upper end opening surface of the surrounding cylinder portion, a connecting plate extending from the pressing plate side toward the tip opening portion above the nozzle, It extends downward from the tip of the connecting plate, A pressing lid provided with a lid plate that closes the end opening, and the pressing portion is suspended from the lower surface of the pressing plate, and the lower end of the pressing portion is located at the upper opening surface of the surrounding tube portion. Provided so as to face the upper surface of the sheet member made of a rubber-like elastic body stretched along, and when the pressing plate is pressed downward, the pressing portion flexes the sheet member downward in an elastic state. The pressing plate and the pressing portion are pushed down, and the connecting plate is moved upward together with the lid plate to open the tip opening of the nozzle.
In this invention, when the pressing plate of the pressing lid is pressed downward, first, the pressing portion of the pressing plate flexes the sheet member downward in an elastic state, the pressing plate and the pressing portion are pressed down, and the connecting plate is combined with the lid plate. When moved upward, the tip opening of the nozzle opens. When the pressing plate is further pressed down, the entire pressing head is pressed down together with the stem, and the contents in the cylinder are pressurized and discharged from the tip opening of the nozzle. After that, when the pressing of the pressing plate is released, the pressing member, the pressing portion, the connecting plate, the cover plate, and the stem are returned to their original positions by restoring and deforming the sheet member, and the discharge of the contents is completed. The lid plate closes the tip opening of the nozzle.
From the above, it is possible to discharge the contents from the opening after opening the tip opening of the nozzle only by the operation of pushing down the pressing plate of the pressing lid, and only by releasing the pressing, The discharge of the contents can be finished and the tip opening of the nozzle can be closed, and the tip opening of the nozzle can be easily opened and closed before and after the discharge of the contents.

Here, the pressing head main body may be integrally formed of a synthetic resin material, and the sheet member may be stretched at an upper end opening of the surrounding cylinder portion.
Further, the pressing head main body is inserted into the surrounding tube portion, a flange-like portion projecting radially outward from the outer peripheral surface of the mounting tube portion and closing the lower end opening of the surrounding tube portion. A cylindrical insert member placed on the upper surface of the flange-like portion, and the sheet member may be stretched at an upper end opening of the insert member.

Furthermore, the base end portion on the pressing plate side of the connecting plate may be pivotally attached to the upper surface of the nozzle.
In this case, as described above, when the sheet member is bent downward in an elastic state at the pressing portion, the connecting plate together with the cover plate can be rotated upward around the base end portion of the connecting plate. It becomes possible, and the above-mentioned action and effect are surely achieved.

In addition, the pressing portion may be provided on the opposite side of the pressing plate with respect to the circumferential position where the connecting plate and the cover plate are provided, with the central portion in the radial direction of the pressing plate interposed therebetween. .
In this case, the above-described operation and effect can be surely achieved by pressing down directly above the pressing plate on the upper surface of the pressing plate.

Further, the sheet member may be formed in a belt shape and stretched at a portion facing the lower end of the pressing portion.
In this case, since the sheet member is formed in a band shape, it is possible to easily and reliably realize the bending deformation of the sheet member by the above-described pressing portion, and it is possible to further improve the operability of the pressing head. it can.

  According to the pressing head according to the present invention, the front end opening of the nozzle can be easily opened and closed before and after the discharge of the contents.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the pressing head 10 according to this embodiment includes a stem 3 erected in an upward biased state from the inside of a cylinder 2 suspended in the container body 1 to the upper side of the container body 1. Used at the top end.
Here, in the illustrated example, the cylinder 2 is fitted into a screw cylinder portion 4 screwed into the mouth portion of the container body 1. The stem 3 is fitted to the upper part of a cylindrical piston (not shown) provided in the cylinder 2 so as to be slidable in the vertical direction, and stands up above the screw cylinder portion 4. Further, a coil spring (not shown) is provided between the lower end of the cylindrical piston and the lower part in the cylinder 2, and the stem 3 is urged upward by the coil spring via the cylindrical piston. . A suction valve (not shown) is provided at the lower end in the cylinder 2, and a discharge valve 8 is provided at the upper end in the stem 3. Further, a pipe 9 extending toward the bottom of the container body 1 is provided at the lower end of the cylinder 2.

  The pressing head 10 has a cylindrical mounting cylinder 11 with a bottom opening attached to the upper end of the stem 3, a surrounding cylinder part 12 surrounding the mounting cylinder part 11 from the outside in the radial direction, A nozzle 13 that communicates with the inside of the stem 3 and that protrudes radially outward from the outer peripheral surface of the mounting cylinder 11, and whose tip opening 13 a is positioned radially outward of the surrounding cylinder 12. , A pressing plate 16 provided facing the upper end opening surface of the surrounding tube portion 12, and the nozzle 13 from above the pressing plate 16 toward the tip opening portion 13a. A pressing lid 19 is provided that includes a connecting plate 17 that extends and a lid plate 18 that extends downward from the tip of the connecting plate 17 and closes the tip opening 13 a of the nozzle 13.

  In the illustrated example, both the mounting cylinder part 11 and the surrounding cylinder part 12 are cylindrical and are provided coaxially. Further, the upper and lower end surfaces of the surrounding tube portion 12 are open, and the upper end opening surface is located at the same vertical position as the top surface 11 a of the mounting tube portion 11. Here, between the outer peripheral surface of the mounting cylinder part 11 and the inner peripheral surface of the surrounding cylinder part 12, a plurality of bridging parts 12a extending in the radial direction are provided at intervals in the circumferential direction. Are connected to the inner peripheral surface of the surrounding cylinder portion 12.

The nozzle 13 is a quadrangle in a longitudinal sectional view. Further, on the upper surface of the nozzle 13, a portion located between the outer peripheral surface of the mounting cylinder portion 11 and the inner peripheral surface of the surrounding tube portion 12 and the upper surface of the bridging portion 12 a are the top surface 11 a of the mounting cylinder portion 11. Is located at the same vertical position.
The entire mounting cylinder part 11, the surrounding cylinder part 12, the nozzle 13 and the bridging part 12a, that is, the entire pressing head main body 14 are integrally formed of a synthetic resin material.

  The pressing lid 19 includes a peripheral wall portion 25 that is suspended from the outer peripheral edge of the pressing plate 16. The inner diameter of the peripheral wall portion 25 is larger than the outer diameter of the surrounding tube portion 12, and the peripheral wall portion 25 is always open at the upper end of the surrounding tube portion 12 before and after the pressing plate 16 is pushed down as will be described later. Is provided so as to cover from above and radially outward. As a result, even when the container body 1 to which the pressing head 10 is attached is used in a watery environment such as a bathing area, moisture enters the inside of the surrounding tube portion 12 and further passes through the stem 3. It is possible to prevent moisture from entering the container body 1. The connecting plate 17 is connected to the outer peripheral surface of the lower end portion of the peripheral wall portion 25.

  In the present embodiment, the pressing portion 20 is suspended from the lower surface of the pressing plate 16, and the lower end of the pressing portion 20 is a rubber-like elastic stretched along the upper end opening surface of the surrounding tube portion 12. It is supported by the upper surface of the sheet | seat member 21 which consists of a body. The sheet member 21 is formed of a thermoplastic elastomer material such as olefin, styrene, or polyester. In the illustrated example, the sheet member 21 is stretched so as to close the entire upper end opening surface of the surrounding tube portion 12. Further, the sheet member 21 is integrally joined to the upper surfaces of the surrounding tube portion 12 and the bridging portion 12 a and the top surface 11 a of the mounting tube portion 11.

  In this embodiment, a pivot groove 28 extending along the width direction of the nozzle 13 is formed at the base end of the nozzle 13 on the upper surface of a portion of the nozzle 13 located outside the surrounding cylinder 12. In addition, wall portions 22 extending from the base end toward the tip opening 13a of the nozzle 13 are provided upright at both ends in the width direction. A bearing hole 23 is formed in the wall portion 22 so as to continue to the pivot groove 28 in the width direction of the nozzle 13. Here, the connecting plate 17 is detachably fitted between the wall portions 22.

  Further, a shaft portion 24 that extends along the width direction of the lower surface of the connecting plate 17 on the side of the pressing plate 16 and that protrudes from both ends of the connecting plate 17 in the width direction is connected to the base end portion. The shaft portion 24 is engaged in the pivot mounting groove 28, and both end portions of the shaft portion 24 are inserted into the bearing holes 23, so that the base end portion of the connecting plate 17 is placed on the upper surface of the nozzle 13. It is pivotally attached. In this way, the push-down lid 19 is attached to the push-down head main body 14 by the base end portion of the connecting plate 17 pivoting on the upper surface of the nozzle 13.

Further, in the present embodiment, the pressing unit 20 is opposite to the circumferential position where the connecting plate 17 and the cover plate 18 are provided, with the central portion in the radial direction of the pressing plate 16 sandwiched in the top view of the pressing plate 16. On the side.
In the state where the pressing lid 19 is attached to the pressing head main body 14 as described above, the lower end of the pressing portion 20 is supported by a portion located between the bridging portions 12 a on the upper surface of the sheet member 21.

As described above, according to the pressing head 10 according to the present embodiment, from the state where the cover plate 18 closes the tip opening 13a of the nozzle 13, the upper surface of the pressing plate 16 of the pressing cover 19 is directly above the pressing portion 20. 1 is pressed downward, as shown by a two-dot chain line in FIG. 1, the pressing portion 20 flexes the sheet member 21 in an elastic state downward, and the pressing plate 16 and the pressing portion 20 are pressed down. The push-down lid 19 rotates around the shaft portion 24 so that the connecting plate 17 is moved upward together with the lid plate 18, and the tip opening portion 13 a of the nozzle 13 is opened.
When the pressing plate 16 is further pressed down, the entire pressing head 10 is pressed down together with the stem 3, and the contents in the cylinder 2 are pressurized and discharged from the tip opening 13 a of the nozzle 13.
Thereafter, when the pressing of the pressing plate 16 is released, the sheet member 21 is restored and deformed, so that the pressing plate 16, the pressing portion 20, the connecting plate 17, the cover plate 18 and the stem 3 are returned to their original positions, and the contents And the cover plate 18 closes the tip opening 13a of the nozzle 13.
As described above, it is possible to discharge the contents from the opening 13a after opening the tip opening 13a of the nozzle 13 only by the operation of depressing the pressing plate 16 of the pressing lid 19, and the pressing down can be performed. It is possible to end the discharge of the contents and close the tip opening 13a simply by releasing the opening, and the tip opening 13a of the nozzle 13 can be easily opened and closed before and after the discharge of the contents. .

  Further, in the present embodiment, since the base end portion of the connecting plate 17 is pivotally attached to the upper surface of the nozzle 13, when the sheet member 21 is bent downward in the elastic state by the pressing portion 20 as described above. In addition, the connecting plate 17 together with the cover plate 18 can be rotated upward around the base end portion of the connecting plate 17, so that the above-described effects can be reliably achieved.

  Further, in the present embodiment, the pressing portion 20 is opposite to the circumferential position where the connecting plate 17 and the cover plate 18 are provided with the radial center portion of the pressing plate 16 sandwiched in the top view of the pressing plate 16. Since it is provided on the side, the above-described operation and effect are more reliably achieved by pressing down directly above the pressing plate 20 on the upper surface of the pressing plate 16.

  Further, in the present embodiment, the pressing head body 14 is provided with a bridging portion 12 a that connects the outer peripheral surface of the mounting cylinder portion 11 and the inner peripheral surface of the surrounding cylinder portion 12, and the sheet member 21 is connected to the surrounding cylinder portion 12. Since not only the upper surface and the top surface 11a of the mounting cylinder portion 11 are bonded to the upper surface of the bridging portion 12a, it is possible to prevent the sheet member 21 from being easily peeled off from the pressing head main body 14 in the course of using the contents. It is possible to prevent the durability of the pressing head 10 from being lowered by providing the pressing member 10 with the sheet member 21. Furthermore, the surrounding cylinder part 12 can be stabilized without wobbling with respect to the mounting cylinder part 11 by the bridging part 12a.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the embodiment, when the pressing plate 16 is pressed downward from the state in which the cover plate 18 closes the tip opening portion 13a of the nozzle 13, the pressing portion 20 is moved to the sheet as shown by a two-dot chain line in FIG. The member 21 is bent downward in an elastic state so that the pressing plate 16 and the pressing portion 20 are pushed down, and the entire pressing lid 19 is moved around the shaft portion 24 so that the connecting plate 17 is moved upward together with the lid plate 18. Although the structure in which the tip opening 13a of the nozzle 13 is opened by rotating is shown, instead of this, the pusher plate 16 and the pusher 20 are moved downward in the vertical direction, and the tip opening 13a of the nozzle 13 is moved. You may employ | adopt the pushing lid | cover which makes it open.

Moreover, in the said embodiment, although the mounting cylinder part 11, the surrounding cylinder part 12, the nozzle 13, and the bridge | crosslinking part 12a were shown as a structure integrally formed with the synthetic resin material as the pressing head main body 14, it replaced with this. Thus, a configuration divided into a plurality of parts may be adopted.
For example, as shown in FIG. 3, a flange-like portion that protrudes radially outward from the outer peripheral surface of the mounting cylinder portion 11 and closes the lower end opening of the surrounding cylinder portion 12 on the pressing head main body 14. 26 and a cylindrical insert member 27 that is inserted into the surrounding cylindrical portion 12 and placed on the upper surface of the flange-shaped portion 26, and the sheet member 21 is stretched over the upper end opening of the insert member 27. A configuration may be adopted.

 In the example shown in the drawing, the insert member 27 has a C-shaped outer shape when viewed from above. Inside the hole portion 27 a forming the C shape, the outer peripheral surface of the mounting tube portion 11 and the inner tube portion 12 in the nozzle 13. A portion located between the peripheral surface and the mounting cylinder portion 11 are fitted. The sheet member 21 is stretched so as to close the entire upper end opening surface of the insert member 27.

Furthermore, you may form the lower end of the press part 20 contact | abutted on the upper surface of the sheet | seat member 21 in the curved surface shape which protrudes below. In this case, when the pressing plate 16 is pressed downward and the sheet member 21 is bent downward elastically at the lower end of the pressing portion 20, the upper surface of the sheet member 21 is damaged and easily broken. Can be suppressed.
In the above-described embodiment, the lower end of the pressing unit 20 is supported by the upper surface of the sheet member 21 in a state where the tip opening 13a of the nozzle 13 is closed by the cover plate 18, but instead of this, for example, the pressing unit 20 The lower end of the sheet and the upper surface of the sheet member 21 may be opposed to each other, and a gap may be provided therebetween.

Furthermore, in the above-described embodiment, the sheet member 21 is stretched so as to close the entire upper end opening surface of the surrounding tube portion 12 or the insert member 27, but at least a portion facing the lower end of the pressing portion 20 is a belt-like sheet member. May be stretched.
When the sheet member is formed in a strip shape in this way, it becomes possible to easily and reliably realize the bending deformation of the sheet member by the pressing portion 20 described above, and to further improve the operability of the pressing head 10. Can do.

  For example, as shown in FIG. 4, in the sheet member 21 shown in FIG. 2, a plurality of through holes 30 are formed at intervals in the circumferential direction at positions excluding a portion facing the lower end of the pressing portion 20. From the upper surface of the portion located between the outer peripheral surface of the mounting tube portion 11 and the inner peripheral surface of the surrounding tube portion 12 in the nozzle 13 and the top surface 11a of the mounting tube portion 11, You may extend over the part located in the upper surface of the part 12 on the opposite side on both sides of the radial direction center part of this cylinder part 12. As shown in FIG.

  Instead, as shown in FIG. 5, in the sheet member 21 shown in FIG. 3, the plurality of through holes 30 are spaced apart in the circumferential direction at positions excluding a portion facing the lower end of the pressing portion 20. In addition, the through hole 30 is also formed in the entire region facing the hole 27a, and the belt-like sheet member 29 is formed radially outward from the bottom 27b of the hole 27a on the upper surface of the insert member 27. You may extend toward.

  The pressing head main body 14 shown in FIGS. 1, 2 and 4 and the insert member 27 shown in FIGS. 3 and 5 are, for example, any one of the sheet members 21 and 29 and other portions. It may be formed by insert molding as an insert product, or the sheet members 21, 29 and other parts are separately formed and the sheet members 21, 29 are surrounded by the surrounding cylinder portion 12 or the like or an insert member. 27 may be adhered to the upper portion of the sheet member 21. Furthermore, both of the sheet members 21, 29 and other portions may be simultaneously formed by so-called two-color molding.

  The front end opening of the nozzle can be easily opened and closed before and after discharging the contents.

It is a partial longitudinal cross-sectional view of the container with a pressing head to which the pressing head shown as 1st Embodiment concerning this invention is applied. It is a disassembled perspective view of the pressing head shown in FIG. It is a disassembled perspective view of the pressing head shown as 2nd Embodiment concerning this invention. It is a disassembled perspective view of the pressing head shown as 3rd Embodiment based on this invention. It is a disassembled perspective view of the pressing head shown as 4th Embodiment concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 2 Cylinder 3 Stem 10 Pressing head 11 Mounted cylinder part 12 Enclosed cylinder part 13 Nozzle 13a Tip opening part 14 Pressing head main body 16 Pressing plate 17 Connecting plate 18 Lid plate 19 Pressing lid 20 Pressing part 21, 29 Sheet member 26 Flange 27 Insert member

Claims (6)

A pressing head attached to an upper end of a stem that is erected in an upwardly biased state upward from the inside of a cylinder suspended in the container body;
A top tube-shaped mounting tube portion whose lower end opening is mounted on the upper end of the stem; and
A surrounding tube portion that surrounds the mounting tube portion from the outside in the radial direction;
A nozzle having an inside communicated with the inside of the stem and projecting radially outward from the outer peripheral surface of the mounting cylinder, the tip opening of which is positioned radially outward of the surrounding cylinder A pressing head main body is provided,
A pressing plate provided to face the upper end opening surface of the surrounding cylinder portion;
A connecting plate extending from the side of the pressing plate toward the tip opening above the nozzle;
A pressing lid provided with a lid plate that extends downward from the tip of the connecting plate and closes the tip opening of the nozzle,
A pressing portion is suspended from the lower surface of the pressing plate, and the pressing portion faces the upper surface of a sheet member made of a rubber-like elastic body whose lower end is stretched along the upper end opening surface of the surrounding tube portion. Provided to
When the pressing plate is pressed downward, the pressing portion bends the sheet member in an elastic state downward, whereby the pressing plate and the pressing portion are pressed down, and the connecting plate is moved upward together with the lid plate. And a pressing head characterized in that the tip opening of the nozzle is opened. The pressing head according to claim 1,
The press head according to claim 1, wherein the press head body is integrally formed of a synthetic resin material, and the sheet member is stretched over an upper end opening of the surrounding tube portion. The pressing head according to claim 1,
The push-down head body is provided on the outer peripheral surface of the mounting cylinder part so as to project radially outward, and closes the lower end opening of the surrounding cylinder part, and is inserted into the surrounding cylinder part and the flange And a cylindrical insert member placed on the upper surface of the shape portion, and the sheet member is stretched over the upper end opening of the insert member. A pressing head according to any one of claims 1 to 3,
The pressing head according to claim 1, wherein a base end portion on the pressing plate side of the connecting plate is pivotally attached to an upper surface of the nozzle. A pressing head according to any one of claims 1 to 4,
The pressing part is provided on the opposite side of the pressing plate with respect to the circumferential position where the connecting plate and the cover plate are provided, with the central portion in the radial direction of the pressing plate being sandwiched. Press head. A pressing head according to any one of claims 1 to 5,
The pressing head according to claim 1, wherein the sheet member is formed in a belt shape and is stretched at a portion facing the lower end of the pressing portion.

Images