JP2016123927A - Discharger - Google Patents

Discharger Download PDF

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Publication number
JP2016123927A
JP2016123927A JP2014266386A JP2014266386A JP2016123927A JP 2016123927 A JP2016123927 A JP 2016123927A JP 2014266386 A JP2014266386 A JP 2014266386A JP 2014266386 A JP2014266386 A JP 2014266386A JP 2016123927 A JP2016123927 A JP 2016123927A
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stem
cylinder
portion
formed
pressing head
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JP2014266386A
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JP6397761B2 (en
Inventor
阿部 孝之
Takayuki Abe
孝之 阿部
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株式会社吉野工業所
Yoshino Kogyosho Co Ltd
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Publication of JP2016123927A publication Critical patent/JP2016123927A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a discharger which can discharge while suppressing force of content, and can easily prevent leakage from a discharge hole.SOLUTION: A discharger 1 is provided with a pump 4 having a stem 6 arranged on a mouth part 2a of a container main body 2 for storing content in an upwardly biased state so as to move downward, and a pushing-down head 5 which is mounted on an upper end of the stem and has a discharge hole 5a for discharging the content. A mounting cylinder 61 fitted to the upper end of the stem, a nozzle cylinder 62 which extends to an outer side in a radial direction and has a discharge hole formed on a tip end, and a cylindrical communicating cylinder 63 which communicates between an inside of the stem and an inside of the nozzle cylinder and has a larger inner diameter than an inner diameter of the stem. A valve seat 46 in which a ball valve 45 is placed so as to separate upward is formed in the stem. A restriction rib 66 which extends downward from a top wall part 60a of the pushing-down head and restricts upward movement of the ball valve is formed in the communicating cylinder.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a dispenser.

  Conventionally, for example, a discharge device described in Patent Document 1 below is known. This discharge device includes a pump having a stem disposed at the mouth portion of the container body so as to be movable downward in an upward biased state, a pressing head mounted on the upper end of the stem and having a discharge hole for contents. It is equipped with. The pump is inserted into the mouth portion of the container body, the cylinder with the stem standing upwards, the piston linked to the stem and slidably fitted in the cylinder, and the lower end opening of the cylinder. And a lower valve body that opens and closes.

  In the stem, a ball valve and a valve seat on which the ball valve is mounted so as to be separated upward are formed. The ball valve and the valve seat function as a discharge valve that switches between communication between the stem and the discharge hole and blocking of the communication. When the internal pressure of the container body rises by depressing the pressing head, the discharge valve opens because the ball valve moves upward and separates from the valve seat. As a result, the content in the container body passes through the ball valve in the stem and reaches the discharge hole, so that the content can be discharged to the outside through the discharge hole.

JP 2000-334337 A

However, in the above-described conventional dispenser, the ball valve sometimes goes up into the pressing head beyond the stem. For this reason, the contents easily pass through the ball valve outside the stem, and the contents are easily ejected vigorously by pressing down the pressing head. Thereby, there was a problem that the contents were scattered around. When the pressing head was pressed down strongly (fast), the contents were more likely to scatter.
In addition, when the ball valve rises beyond the stem for any reason during storage or carrying, the contents may easily pass through the ball valve outside the stem, and the contents may leak from the discharge hole. was there.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a discharger that can discharge while suppressing the momentum of the contents and can easily prevent leakage from the discharge hole. Is to provide.

In order to achieve the above object, the present invention provides the following means.
(1) A discharger according to the present invention is attached to a mouth of a container main body in which contents are accommodated, and a pump having a stem arranged to be movable downward in an upward biased state, and an upper end of the stem. A pressing head formed with a discharge hole for discharging the contents, the pressing head having a mounting cylinder fitted to the upper end of the stem, extending radially outward, and a tip thereof A nozzle cylinder in which the discharge hole is formed, and a cylindrical communication cylinder communicating with the inside of the stem and the nozzle cylinder and having an inner diameter larger than the inner diameter of the stem. A valve seat is formed on which the ball valve is mounted so as to be separated upward, and extends downward from the top wall portion of the push-down head in the communication cylinder to restrict the upward movement of the ball valve. The regulation rib to be formed is formed.

According to the present invention, for example, when the internal pressure of the container body rises as the pressing head is pushed down, the ball valve moves upward and separates from the valve seat, so that the contents in the container body are placed in the stem and in the communication cylinder. And it can be made to distribute | circulate to a discharge hole through the inside of a nozzle cylinder, and a content can be discharged outside through a discharge hole.
In particular, since the restriction rib restricts the upward movement of the ball valve, it is possible to prevent the ball valve from entering the communicating cylinder having an inner diameter larger than the inner diameter of the stem beyond the stem. Thereby, since the ball valve can be retained in the stem, the contents can be circulated so as to pass through the ball valve in the stem, and when the contents flowing toward the discharge hole pass through the ball valve, Distribution resistance can be kept high. Therefore, it is possible to suppress an increase in the flow rate of the contents that pass through the ball valve toward the discharge holes, and it is possible to suppress the momentum of the contents discharged to the outside through the discharge holes.

  Further, when the pressing head is not pushed down, even if the ball valve rises from the valve seat for some reason, the ball valve can be retained in the stem by the regulating rib. The flow resistance when passing through the ball valve can be kept high. Therefore, it becomes difficult for the contents to pass through the ball valve, so that leakage of the contents from the discharge holes can be suppressed.

(2) A portion of the stem positioned above the valve seat may have the same inner diameter over the entire area.

  In this case, for example, it is possible to suppress the occurrence of sink marks on the stem as compared with the case where a protruding rib or the like is formed on the inner peripheral surface of the stem, and the sealing performance between the mounting cylinder and the stem in the pressing head can be reduced. It can be ensured easily and reliably.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to discharge in the state which suppressed the momentum of the content, it is easy to prevent the leak from a discharge hole.

It is a figure which shows embodiment of the discharge device which concerns on this invention, Comprising: It is a semi-longitudinal sectional view which shows the state in which the pressing head and the stem are located in the falling end position. It is a figure which shows the state from which the pressing head and the stem are located in the raise end position from the state shown in FIG. It is an expanded sectional view of the A section shown in FIG. It is the top view which looked at the pressing head shown in FIG. 1 from the downward direction.

Hereinafter, an embodiment of a discharger according to the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, the dispenser 1 of the present embodiment includes a top cylindrical mounting cap 3 mounted on the mouth portion 2 a of the container body 2 in which the contents are accommodated, A pump 4 having a cylindrical stem 6 penetrating in an upwardly biased state is provided, and a pressing head 5 attached to the upper end of the stem 6 and having a discharge hole 5a.
In addition, this discharge device 1 can be suitably used as a discharge device for discharging, for example, contents having a viscosity of about 100 mPa · s (100 cP) or less.

  When the dispenser 1 is not in use, the stem 6 and the pressing head 5 are positioned at the lowered end position P1, and the pressing head 5 is screwed and held in a regulation cylinder 12 described later, as shown in FIG. Thus, the upward movement of the pressing head 5 with respect to the mounting cap 3 is restricted. On the other hand, in the use stage, as shown in FIG. 2, the stem 6 and the pressing head 5 are located at the rising end position P <b> 2 and maintain a standby state for the discharge operation.

  The container main body 2 and the mounting cap 3 are arranged with their central axes positioned on a common axis. In the present embodiment, this common axis is referred to as an axis O, the pressing head 5 side along the axis O is referred to as an upper side (upper), and the opposite side is referred to as a lower side (lower). Further, in a plan view viewed from the direction of the axis O, a direction orthogonal to the axis O is referred to as a radial direction, and a direction that goes around the axis O is referred to as a circumferential direction.

  As shown in FIG. 2, the mounting cap 3 is formed in a top tube shape having an annular top wall 3 a and is screwed to the mouth 2 a of the container body 2. The top wall portion 3a is disposed on the flange portion 20 of the cylinder 10 to be described later and the upper end opening edge of the mouth portion 2a of the container body 2, and prevents the cylinder 10 from coming off upward.

The pump 4 is held in a state of being inserted into the mouth 2a of the container body 2 by the mounting cap 3 described above, and a cylinder 10 having a stem 6 standing upwards on the inside thereof, and a stem 6 A piston 11 that is linked and fitted in the cylinder 10 so as to be vertically slidable, and a restriction cylinder that is attached to the upper end portion of the cylinder 10 and that can hold the pressing head 5 at the lowered end position P1 (see FIG. 1). 12.
Further, the pump 4 is disposed in the cylinder 10 and opens and closes the lower communication port 10a (lower end opening) of the cylinder 10, a biasing member 14 that biases the stem 6 upward, An upper valve body 15 extending upward from the lower valve body 13 and inserted into the stem 6, and a seal cylinder 16 formed separately from the stem 6 and mounted in the stem 6 are provided.

  As shown in FIG. 2, the cylinder 10 is disposed inside the mounting cap 3, and has an annular flange portion 20 disposed on the upper end opening edge of the mouth portion 2 a of the container body 2 via the packing 19, and a flange. A straight tube portion 21 extending downward from the inner periphery of the portion 20, a suction tube portion 22 extending downward from the lower end edge of the straight tube portion 21, and upward from the inner periphery of the flange portion 20. And a projecting cylindrical portion 23 extending in the direction.

The straight tube portion 21 is formed with an air hole 25 communicating with the inside of the container body 2 and the inside of the cylinder 10 by penetrating the straight tube portion 21 in the radial direction at a portion positioned below the flange portion 20. . An annular lower valve seat portion (lower end opening edge) 26 projecting inward in the radial direction is formed at the lower end portion of the straight tube portion 21 (boundary portion with the suction tube portion 22). In addition, the inner side of the lower valve seat portion 26 constitutes the above-described lower communication port 10a that allows the inside of the cylinder 10 and the inside of the container body 2 to communicate with each other.
A tube body 27 that sucks up the contents in the container main body 2 is fitted in the suction cylinder portion 22. The upper end edge of the tube body 27 is in contact with the lower valve seat portion 26 from below.

The restriction cylinder 12 is fitted to the multiple cylinder-shaped inner cylinder part 30 fitted to the protruding cylinder part 23 of the cylinder 10 and the protruding cylinder part 23, and the upper end is connected to the upper end of the inner cylinder part 30. A screw cylinder portion 32.
The inner cylinder part 30 is attached to the protruding cylinder part 23 in a state where the rotation around the axis O is restricted. The stem 6 is inserted into the inner cylinder part 30, and the inner cylinder part 30 guides the vertical movement of the stem 6 and the pressing head 5 with respect to the regulation cylinder 12. The screw cylinder portion 32 is formed in a two-stage cylinder shape whose diameter on the lower side is larger than that on the upper side, and a male screw portion is formed on the outer peripheral surface on the upper side.

  The piston 11 is disposed in the straight tube portion 21 of the cylinder 10 so as to be slidable up and down. The piston 11 gradually increases in diameter as the upper end portion moves upward, and gradually increases in diameter as the lower end portion moves downward. The upper end and the lower end of the piston 11 are in slidable contact with the inner peripheral surface of the straight cylinder portion 21 in the cylinder 10 over the entire circumference in the circumferential direction, for example.

  The stem 6 is formed integrally with the piston 11. The outer diameter of the stem 6 is formed smaller than the inner diameter of the piston 11. The lower end of the stem 6 is connected to the intermediate portion of the piston 11 in the axis O direction from the inside in the radial direction. In the cylinder 10, an annular space 70 that is defined between the stem 6 and the cylinder 10 and communicates with the air hole 25 described above is provided in a portion located above the piston 11. The annular space 70 communicates with the outside.

The stem 6 includes a base cylinder part 39 having a lower end connected to the piston 11 and a rising cylinder part 43 extending upward from the upper end of the base cylinder part 39.
The base tube portion 39 includes a large-diameter portion 40 located on the lower side, and a small-diameter portion 42 connected to the upper side of the large-diameter portion 40 via a connecting step portion 41. Thereby, the outer peripheral surface of the base cylinder part 39 is diameter-reduced stepwise toward the upper direction from the downward direction.

When the stem 6 and the pressing head 5 are located at the rising end position P <b> 2, the connecting step portion 41 contacts the lower end edge of the inner cylinder portion 30 described above from below, and the stem 6 and the pressing head 5 with respect to the restriction cylinder 12. Further upward movement is restricted.
The small diameter portion 42 is disposed in the inner cylinder portion 30 of the restriction cylinder 12 so as to be movable up and down.

As shown in FIGS. 2 and 3, a longitudinal rib 39 a and a reduced diameter portion 39 b whose inner diameter is smaller than that of other portions are provided on the inner peripheral surface of the base tube portion 39. The vertical rib 39a and the reduced diameter portion 39b are arranged so as to be shifted in the direction of the axis O, and the vertical rib 39a is positioned above the reduced diameter portion 39b.
A plurality of the vertical ribs 39a extend in the direction of the axis O and are arranged at intervals in the circumferential direction. The upper end of the vertical rib 39 a is located above the connecting step portion 41 in the base tube portion 39, and is disposed at the same position as the upper end of the base tube portion 39. The lower end of the vertical rib 39 a is located below the connection step portion 41 and is located above the lower end of the base tube portion 39.

  As shown in FIG. 3, the upper end of the reduced diameter portion 39b is located below the lower end of the vertical rib 39a. The inner peripheral surface of the reduced diameter portion 39b is located on the outer side in the radial direction with respect to the top surface facing the inner side in the radial direction in the vertical rib 39a. A tapered surface 39c is provided on the inner peripheral surface of the reduced diameter portion 39b. The tapered surface 39c is formed at the upper portion of the reduced diameter portion 39b and gradually increases in diameter from the lower side toward the upper side. In the example shown in the figure, the portion located below the tapered surface 39c on the inner peripheral surface of the reduced diameter portion 39b has the same diameter over the entire length in the axis O direction.

As shown in FIG. 2, an annular upper valve seat portion (valve seat) 46 is disposed at a connecting portion between the base tube portion 39 and the rising tube portion 43. The upper valve seat portion 46 is gradually inclined downward as it goes inward in the radial direction in a longitudinal sectional view along the axis O direction. The inner side of the upper valve seat portion 46 constitutes an upper communication port 6 a that communicates the inside of the stem 6 and the inside of the pressing head 5.
In the rising cylinder portion 43, a valve body portion (ball valve) 45 is disposed on the upper valve seat portion 46 so as to be separable from above. The valve body 45 is seated on the upper surface of the upper valve seat 46 and closes the upper communication port 6a. The portion of the stem 6 positioned above the upper valve seat portion 46, that is, the rising cylinder portion 43 has the same inner diameter over the entire region (full length).

  The lower valve body 13 maintains a state in which the lower communication port 10a of the cylinder 10 is closed when the cylinder 10 is pressurized, and opens the lower communication port 10a of the cylinder 10 when the pressure in the cylinder 10 is reduced. It is said that. The lower valve body 13 is supported in the cylinder 10 so as to be rotatable around the axis O.

  The lower valve body 13 includes a bottomed cylindrical upper cylinder portion 51 fitted into the stem 6 when the stem 6 and the pressing head 5 are positioned at the lower end position P1 (see FIG. 1), and the lower valve described above. A lower ring portion 52 disposed on the seat portion 26, a connecting portion 53 that connects the upper tube portion 51 and the lower ring portion 52, and an inner portion of the lower ring portion 52 that opens and closes the lower communication port 10a. And a valve main body 50. In the illustrated example, the upper tube portion 51 and the lower ring portion 52 are arranged coaxially with the axis O.

The upper cylinder portion 51 has a smaller diameter than the lower ring portion 52, and is detachably fitted into the lower end portion of the stem 6 when the stem 6 and the pressing head 5 are located at the lowered end position P1 (see FIG. 1). Combined. A shaft portion 51 a extending along the axis O is erected on the bottom wall portion of the upper tube portion 51. The upper end of the shaft part 51 a is located below the upper end edge of the upper cylinder part 51.
A pair of connecting portions 53 are arranged with the axis O sandwiched in the radial direction. The pair of connecting portions 53 are arranged between both connecting portions 53 and are connected via a partition wall portion 59 extending in the direction of the axis O.

  The valve main body 50 is formed in a disc shape arranged coaxially with the axis O, and is detachably seated on the lower valve seat portion 26 to close the lower communication port 10a. Between the outer peripheral surface of the valve main body 50 and the inner peripheral surface of the lower ring portion 52, elastic connecting pieces 55 that connect the valve main body 50 to the lower ring portion 52 so as to be elastically displaceable are spaced in the circumferential direction. It is arranged with a gap.

  The urging member 14 is extrapolated to the connecting portion 53 of the lower valve body 13 and urges the stem 6 upward. Specifically, the urging member 14 is interposed between the base tube portion 39 of the piston 11 and the upper end surface of the lower ring portion 52 of the lower valve body 13, and the stem 6 and the lower valve body 13 are arranged in the direction of the axis O. To force them away from each other.

  The upper valve body 15 is formed separately from the lower valve body 13 and protrudes upward from the above-described upper cylinder portion 51 of the lower valve body 13. The upper valve body 15 includes an adherent portion 80 mounted in the upper cylinder portion 51 and a rod-like portion 81 that protrudes upward from the adherent portion 80. The adherend portion 80 is formed in a top tube shape, is fitted inside the upper tube portion 51, and is fitted outside the shaft portion 51a.

  A bulging portion (sealed portion) 81 a is formed at the upper end portion of the rod-shaped portion 81. The bulging portion 81 a has the outer peripheral surface of the rod-shaped portion 81 bulging outward in the radial direction, and is formed over the entire circumference of the rod-shaped portion 81. In the illustrated example, the bulging portion 81a is formed in a triangular shape that protrudes outward in the radial direction in a longitudinal sectional view along the axis O direction. Thereby, the bulging part 81a is gradually diameter-expanded as it goes to the center of the axis O direction from the upper and lower sides of the axis O direction.

  The seal cylinder 16 includes a main body 90 fitted in the stem 6 and an elastic ring 91 protruding from the main body 90 toward the inside in the radial direction. The main body 90 and the elastic ring 91 are made of, for example, polyethylene. It is comprised by integrally forming with resin materials, such as. The hardness of the seal cylinder 16 is lower than the hardness of the stem 6 and the upper valve body 15.

  The upper end of the main body 90 is in contact with the lower end of the vertical rib 39a in the stem 6, and the lower end of the main body 90 is located below the upper end of the reduced diameter portion 39b and above the lower end of the reduced diameter portion 39b. Is located. In the illustrated example, a fitting recess 90a that opens downward is formed on the outer peripheral surface of the main body 90, and the reduced diameter portion 39b is fitted in the fitting recess 90a. The fitting recess 90a is formed in a circumferential groove shape extending over the entire circumference in the circumferential direction.

  A guide surface 90 b is further formed on the outer peripheral surface of the main body 90. The guide surface 90b is formed in a portion located on the upper side of the fitting recess 90a on the outer peripheral surface of the main body 90. The guide surface 90b extends over the entire circumference in the circumferential direction, and gradually decreases in diameter from the lower side toward the upper side. The guide surface 90b is inclined with respect to the axis O in a longitudinal sectional view along the direction of the axis O. The upper end of the guide surface 90 b reaches the upper end of the main body 90.

  The elastic ring 91 is provided at the lower end of the main body 90 and is formed to be elastically deformable in the radial direction. In the illustrated example, an auxiliary seal piece 91 a extending in the direction of the axis O is provided on the inner peripheral edge of the elastic ring 91. The auxiliary seal piece 91 a is formed in a cylindrical shape coaxial with the axis O, and is shorter in the axis O direction than the main body 90.

  When the stem 6 and the pressing head 5 are located at the rising end position P2, the seal cylinder 16 is fitted to the upper valve body 15 so as to be detachable from the outside. In the illustrated example, the elastic ring 91 of the seal cylinder 16 is fitted in a liquid-tight manner to the bulging portion 81a of the upper valve body 15 so as to be separated downward. At this time, the elastic ring 91 is fitted to the bulging portion 81a in a state of being elastically deformed in the radial direction. In the present embodiment, the auxiliary seal piece 91a in the elastic ring 91 is elastically deformed in the radial direction by coming into contact with the central portion of the bulging portion 81a in the direction of the axis O from the lower side.

  The seal cylinder 16 is fitted into the stem 6 by being inserted into the stem 6 from below. When the seal cylinder 16 is fitted into the stem 6, the guide surface 90 b of the main body 90 is slid on the lower end of the reduced diameter portion 39 b of the stem 6, and the outer peripheral surface of the main body 90 is above the fitting recess 90 a. The reduced-diameter portion 39b is fitted into the fitting recess 90a by overriding the reduced-diameter portion 39b on the portion located at the position.

In the pump 4, a space between the upper valve seat portion 46 and the lower valve seat portion 26 is a storage chamber R in which contents are stored. The storage chamber R extends over the inside of the base tube portion 39 of the stem 6, the piston 11, and the straight tube portion 21 of the cylinder 10.
In the pump 4, the lower valve body 13 described above is provided, so that when the inside of the cylinder 10 is pressurized, the contents in the storage chamber R are restricted from returning to the container body 2 through the lower communication port 10a. At the time of decompression in the cylinder 10, the contents in the container body 2 are allowed to flow into the storage chamber R through the lower communication port 10a.

  As shown in FIGS. 2 and 4, the pressing head 5 includes a top cylindrical body cylinder 60 having a top wall 60 a and a peripheral wall 60 b, a mounting cylinder 61 mounted on the upper end of the stem 6, and a main body A nozzle cylinder 62 that protrudes radially outward from the cylinder portion 60 and has a discharge hole 5a formed at the tip thereof, and a communication cylinder 63 that communicates the inside of the stem 6 and the inside of the nozzle cylinder 62 are provided. The main body cylinder portion 60 is arranged coaxially with the axis O.

  On the inner peripheral surface of the lower end of the peripheral wall portion 60 b in the main body cylindrical portion 60, a female screw portion corresponding to the male screw portion of the screw cylinder portion 32 of the restriction cylinder 12 is formed. As a result, the main body cylinder portion 60 is screwed to the restriction cylinder 12 at the lowered end position P1 (see FIG. 1), and the screwing with the restriction cylinder 12 is released at the raised end position P2.

  The communication cylinder 63 extends downward from the top wall portion 60 a of the main body cylinder portion 60 and is disposed in the main body cylinder portion 60. The communication cylinder 63 is disposed coaxially with the axis O. The inner diameter of the communication cylinder 63 is larger than the inner diameter of the rising cylinder portion 43 in the stem 6. The nozzle cylinder 62 enters the inside of the peripheral wall portion 60 b of the main body cylinder portion 60 and is integrally connected to the communication cylinder 63. Thereby, the inside of the nozzle cylinder 62 and the inside of the communication cylinder 63 communicate with each other.

The mounting cylinder 61 is formed so as to extend further downward from the lower end portion of the communication cylinder 63, and is externally fitted to the rising cylinder portion 43 in the stem 6. Accordingly, the mounting cylinder 61 is formed integrally with the communication cylinder 63 and is disposed coaxially with the axis O. Further, the inside of the stem 6 and the inside of the nozzle cylinder 62 communicate with each other through the inside of the communication cylinder 63.
The mounting cylinder 61 protrudes downward from the main body cylinder portion 60. Further, the outer diameter of the mounting cylinder 61 is equivalent to the outer diameter of the small diameter portion 42 in the stem 6. Further, a plurality of reinforcing wall portions 65 extending along both the axis O direction and the radial direction are disposed between the communication tube 63 and the peripheral wall portion 60b of the main body tube portion 60 with a space in the circumferential direction. Has been. By the reinforcing wall portion 65, the peripheral wall portion 60b of the main body tube portion 60 and the communication tube 63 are more firmly connected, and the posture of the pressing head 5 is stabilized.

  In the communication cylinder 63, a regulation rib 66 that regulates the upward movement of the valve body part 45 arranged in the rising cylinder part 43 in the stem 6 is arranged. The restriction rib 66 is formed so as to protrude downward from the top wall portion 60 a of the main body cylinder portion 60, and the lower end portion thereof is located at the same height as the upper end opening edge of the rising cylinder portion 43.

  In the illustrated example, the regulation rib 66 is formed in a vertical rib shape that is long in the direction of the axis O, and is a portion located on the opposite side of the radial direction from the nozzle cylinder 62 across the axis O on the inner peripheral surface of the communication cylinder 63. Are also connected together. At this time, the regulating rib 66 is formed so that the lateral width along the radial direction is about half the inner diameter of the rising cylindrical portion 43. As a result, when the valve body 45 rises and moves upward in the cylindrical portion 43, the valve body 45 can be reliably brought into contact with the lower end portion of the regulating rib 66, and the valve body 45 is further moved upward. Can be regulated. Therefore, the valve body 45 can be raised and stay in the cylindrical portion 43.

  In addition, since the restriction rib 66 is disposed on the opposite side of the nozzle cylinder 62 in the radial direction with the axis O in the communication cylinder 63, the flow of contents toward the nozzle cylinder 62 is inhibited by the restriction rib 66. It will never be done. Further, the restriction rib 66 is not limited to the case where it is formed in a vertical rib shape. For example, the regulating rib 66 may be formed in a protruding shape or a rod shape.

Next, the case where the above-described discharger 1 is used will be described.
In using the discharger 1, first, the pressing head 5 and the stem 6 are moved from the lowered end position P1 shown in FIG. 1 to the raised end position P2 shown in FIG. Specifically, the pressing head 5 is rotated toward one end side in the circumferential direction (the direction in which the pressing head 5 and the restriction cylinder 12 are unscrewed), and the screwing of the pressing head 5 to the restriction cylinder 12 is released. . As described above, the upper end portion of the stem 6 is fitted in the pressing head 5, and the upper cylinder portion 51 of the lower valve body 13 is fitted in the lower end portion of the stem 6. With the rotation, the stem 6 and the lower valve body 13 also rotate together.

  In the process of releasing the screwing of the pressing head 5 with respect to the regulating cylinder 12, the pushing head 5 and the stem 6 are raised with respect to the regulating cylinder 12 while rotating in the circumferential direction. When the pressing head 5 is released from the restriction cylinder 12 and the pressing head 5 is detached from the restriction cylinder 12, the piston 11, the stem 6, and the pressing head are pressed by the upward biasing force (elastic restoring force) of the biasing member 14. 5 is pushed upward integrally. As a result, as shown in FIG. 2, the stem 6 and the pressing head 5 can be moved to the rising end position P2, and the pressing head 5 can be shifted to a standby state in which a discharge operation can be performed.

  As the piston 11 moves upward, the connecting step portion 41 of the stem 6 comes into contact with the lower end edge of the inner cylinder portion 30 in the restriction cylinder 12 from below. Thereby, further upward movement of the piston 11 can be restricted, and the stem 6 and the pressing head 5 can be accurately positioned at the preset rising end position P2.

Further, in the above-described process, the piston 11 slides upward on the inner peripheral surface of the cylinder 10 (straight tube portion 21), whereby the inside of the storage chamber R is decompressed and elastically connected to the valve body 50. The piece 55 is elastically deformed. Thereby, the valve main body 50 is separated from the lower valve seat portion 26 and the lower communication port 10a is opened. Then, the content in the container body 2 flows into the storage chamber R through the tube body 27 and the lower communication port 10a.
When the stem 6 and the piston 11 are raised to the rising end position P2, and the sliding toward the upper side of the piston 11 with respect to the cylinder 10 is stopped, the elastic connecting piece 55 is restored and deformed. Thereby, the valve main body 50 is seated on the lower valve seat portion 26 and the lower communication port 10a is closed. At this time, the seal cylinder 16 is fitted into the upper valve body 15 in a liquid-tight manner from below.

When the contents are discharged after the pressing head 5 is moved to the rising end position P <b> 2, the pressing head 5 is pressed and the pressing head 5 is moved downward together with the stem 6. Then, as the stem 6 moves downward, the seal cylinder 16 is detached from the upper valve body 15, and the piston 11 is directed downward on the inner peripheral surface of the straight cylinder portion 21 against the urging force of the urging member 14. Slide. Thereby, the inside of the storage chamber R is pressurized, and the valve body 45 moves upward and separates from the upper valve seat 46, so that the upper communication port 6a is opened.
Therefore, the contents in the storage chamber R sequentially flow through the rising cylinder portion 43 of the stem 6, the communication cylinder 63 of the pressing head 5, and the nozzle cylinder 62 and reach the discharge hole 5 a. As a result, the contents can be discharged to the outside through the discharge holes 5a.

  Next, when the pressing of the pressing head 5 is released, the piston 11, the stem 6, and the stem 6 are moved by the upward biasing force (elastic restoring force) of the biasing member 14 as in the transition to the rising end position P <b> 2 described above. The pressing head 5 is restored and moved upward. As a result, the contents in the container body 2 can flow into the storage chamber R of the cylinder 10 and be prepared for the next discharge operation by pressing the pressing head 5.

In particular, in the discharge device 1 of the present embodiment, since the restriction rib 66 restricts the upward movement of the valve body part 45, the valve body part 45 exceeds the rising cylinder part 43 of the stem 6, and from the inner diameter of the rising cylinder part 43. Can be prevented from entering the communication tube 63 having a larger inner diameter. As a result, the valve body 45 can be retained in the rising cylinder portion 43 of the stem 6, so that the contents can be circulated in the rising cylinder portion 43 so as to pass through the valve body portion 45, and the discharge hole 5a. It is possible to maintain a high flow resistance when the content flowing toward the valve passes through the valve body 45.
Accordingly, it is possible to suppress an increase in the flow rate of the contents that pass through the valve body 45 toward the discharge holes 5a, and it is possible to suppress the momentum of the contents discharged to the outside through the discharge holes 5a.

  Further, when the pressing head 5 is not pushed down, even if the valve body 45 moves upward and separates from the upper valve seat portion 46 for some reason, the valve is inserted into the rising cylinder portion 43 of the stem 6 by the regulating rib 66. Since the body part 45 can be fastened, the flow resistance when the contents pass through the valve body part 45 as described above can be maintained high. Therefore, it becomes difficult for the contents to pass through the valve body 45, so that leakage of the contents from the discharge holes 5a can be suppressed.

  Further, since the rising cylinder portion 43 has the same inner diameter over the entire region (the entire length), the rising cylinder portion 43 has a larger inner diameter than the case where a protruding rib or the like is formed on the inner peripheral surface of the rising cylinder portion 43, for example. It is possible to suppress the occurrence of sink marks. Therefore, the sealing property between the mounting cylinder 61 and the rising cylinder portion 43 in the pressing head 5 can be easily and reliably ensured.

  In the discharge device 1 of the present embodiment, since the air hole 25 communicates with the outside through the annular space 70, when the pressure in the container body 2 is about to rise, this pressure is applied to the air hole 25 and the annular shape. It can escape to the exterior of the container main body 2 through the space 70. Therefore, for example, the content in the container main body 2 can be prevented from leaking from the discharge hole 5a when it is not operated (when it is at the rising end position P2).

  When the contents are discharged by pressing the pressing head 5, air is circulated between the annular space 70 and the container body 2 in accordance with the volume change in the annular space 70 due to the movement of the piston 11. And a smooth pressing operation can be performed. Furthermore, even when the container main body 2 is placed in a high temperature environment, for example, the communication between the inside of the container main body 2 and the outside can be satisfactorily ensured through the air holes 25 and the annular space 70. As a result, the above-described effects can be achieved.

  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, the configuration of the mounting cap 3, the piston 11, the stem 6, the lower valve body 13, and the like is not limited to the above-described embodiment, and may be changed as appropriate. In the above-described embodiment, the piston 11 and the stem 6 are integrally formed. However, the piston 11 and the stem 6 may be separated. In this case, the piston 11 may be linked to the stem 6 and the stem 6 may be moved as the piston 11 moves up and down.
The hardness of the seal cylinder 16 may not be lower than the hardness of the stem 6 and the upper valve body 15.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

O ... Axis 1 ... Discharger 2 ... Container body 2a ... Port 4 ... Pump 5 ... Pressing head 5a ... Discharge hole 6 ... Stem 45 ... Valve body (ball valve)
46 ... Upper valve seat (valve seat)
60a ... Top wall portion 61 of pressing head ... Mounting cylinder 62 ... Nozzle cylinder 63 ... Communication cylinder 66 ... Restriction rib

Claims (2)

  1. A pump having a stem disposed movably downward in an upwardly biased state at the mouth of the container body in which the contents are stored;
    A pressing head mounted on an upper end of the stem and formed with a discharge hole for discharging the contents;
    The pressing head includes a mounting cylinder fitted to the upper end of the stem, a nozzle cylinder extending radially outward and having the discharge hole formed at the tip thereof, the stem and the nozzle cylinder And a cylindrical communication cylinder having an inner diameter larger than the inner diameter of the stem, and
    In the stem, a valve seat on which the ball valve is placed so as to be separated upward is formed,
    A discharger characterized in that a restriction rib is formed in the communication cylinder, extending downward from the top wall portion of the pressing head and restricting the upward movement of the ball valve.
  2. The dispenser according to claim 1, wherein
    A portion of the stem located above the valve seat has an equal inner diameter over the entire area.
JP2014266386A 2014-12-26 2014-12-26 Dispenser Active JP6397761B2 (en)

Priority Applications (1)

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JP2014266386A JP6397761B2 (en) 2014-12-26 2014-12-26 Dispenser

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JP2014266386A JP6397761B2 (en) 2014-12-26 2014-12-26 Dispenser

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JP2016123927A true JP2016123927A (en) 2016-07-11
JP6397761B2 JP6397761B2 (en) 2018-09-26

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0526857U (en) * 1991-03-13 1993-04-06 株式会社吉野工業所 Pressing head of liquid ejectors
JPH0533854U (en) * 1991-09-30 1993-05-07 株式会社吉野工業所 Liquid injection device
JPH08198302A (en) * 1995-01-27 1996-08-06 Yoshino Kogyosho Co Ltd Liquid spray pump
JPH08337263A (en) * 1995-04-03 1996-12-24 Toyo Seikan Kaisha Ltd Pump dispenser and ejector head
JPH0912050A (en) * 1995-06-26 1997-01-14 Yoshino Kogyosho Co Ltd Pump for pouring liquid
US5924603A (en) * 1995-03-10 1999-07-20 Taplast Spa Pump made of plastic for dispensing products from containers
JP2000334337A (en) * 1999-06-01 2000-12-05 Yoshino Kogyosho Co Ltd Liquid injecting pump device
US6364167B1 (en) * 2000-05-12 2002-04-02 Owens-Brockway Plastic Products Inc. Pump dispenser package
JP2012251440A (en) * 2011-05-31 2012-12-20 Yoshino Kogyosho Co Ltd Pump device
WO2016009187A1 (en) * 2014-07-14 2016-01-21 Rieke Packaging Systems Limited Pump dispensers

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0526857U (en) * 1991-03-13 1993-04-06 株式会社吉野工業所 Pressing head of liquid ejectors
JPH0533854U (en) * 1991-09-30 1993-05-07 株式会社吉野工業所 Liquid injection device
JPH08198302A (en) * 1995-01-27 1996-08-06 Yoshino Kogyosho Co Ltd Liquid spray pump
US5924603A (en) * 1995-03-10 1999-07-20 Taplast Spa Pump made of plastic for dispensing products from containers
JPH08337263A (en) * 1995-04-03 1996-12-24 Toyo Seikan Kaisha Ltd Pump dispenser and ejector head
JPH0912050A (en) * 1995-06-26 1997-01-14 Yoshino Kogyosho Co Ltd Pump for pouring liquid
JP2000334337A (en) * 1999-06-01 2000-12-05 Yoshino Kogyosho Co Ltd Liquid injecting pump device
US6364167B1 (en) * 2000-05-12 2002-04-02 Owens-Brockway Plastic Products Inc. Pump dispenser package
JP2012251440A (en) * 2011-05-31 2012-12-20 Yoshino Kogyosho Co Ltd Pump device
WO2016009187A1 (en) * 2014-07-14 2016-01-21 Rieke Packaging Systems Limited Pump dispensers

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