JP2017178442A - Discharge tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge tool capable of suppressing detachment of a push-down head from a stem.SOLUTION: A discharge tool 3 in which a push-down head 11 is attached to a stem 23 which stands in a manner in which the stem can be pushed in, at an upward energization state, the push-down head 11 comprises: a head body 62 on which a nozzle hole 10 communicated to inside of the stem 23 and discharges a content, is formed; and an attachment cylinder member 61 comprising a top wall part 74, an attachment cylinder 71 extended from the top wall part 74 downward, and fitted to an upper end part of the stem 23, and a surrounding cylinder 72 extended from the top wall part 74 downward, and surrounds the upper end part of the stem 23 from outside of a radial direction orthogonal to an axial line O direction, and connects the head body 62 and the stem 23. A slip-prevention protrusion 110 which protrudes inward of the radial direction and engages to an engagement protrusion 46 which protrudes outward of the radial direction from the outer peripheral face of the stem 23, from a lower side of the engagement protrusion 46, is formed on the surrounding cylinder 72.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dispenser.

  As a discharger attached to the mouth of the container main body, a configuration is known in which a pressing head is mounted on a stem standing upright so as to be able to be pushed in an upward biased state. The pressing head includes a head main body in which a nozzle hole for discharging contents is formed, and a mounting cylinder member that connects the head main body and the stem (see, for example, Patent Document 1 below). Specifically, the mounting cylinder includes a mounting cylinder fitted in the stem, a surrounding cylinder disposed so as to be slidable relative to the head body, and a ceiling wall that connects the mounting cylinder and the surrounding cylinder. And a section.

Japanese Unexamined Patent Publication No. 2007-167832

  By the way, in the above-described conventional ejector, for example, when the ejector is attached to the container main body, when the head main body is gripped and lifted, an external force directed upward is applied to the head main body. At this time, there is a possibility that the head main body rises with respect to the stem together with the mounting cylinder member, and the entire pressing head is detached from the stem.

  Then, this invention is made | formed in view of the situation mentioned above, Comprising: It aims at providing the discharge device which can suppress that a pressing head remove | deviates from a stem.

In order to solve the above problems, the present invention proposes the following means.
A discharge device according to the present invention is a discharge device in which a pressing head is mounted on a stem standing upright so as to be able to be pushed in an upward biased state, and the pressing head communicates with the inside of the stem and discharges contents. A head main body having a hole, a ceiling wall portion, a mounting cylinder extending downward from the ceiling wall portion and fitted in the upper end portion of the stem, and extending downward from the ceiling wall portion A surrounding cylinder that surrounds the upper end of the stem from the outside in the radial direction perpendicular to the vertical direction, and a mounting cylinder member that connects the head body and the stem. A locking protrusion that protrudes toward the inside in the radial direction and protrudes toward the outside in the radial direction from the outer peripheral surface of the stem is formed with a retaining protrusion that engages from below the locking protrusion. ing.

  According to this configuration, when the mounting cylinder member moves upward with respect to the stem together with the head body, the retaining projection of the surrounding cylinder engages with the locking projection of the stem from below. Thereby, the upward movement of the pressing head with respect to the stem is restricted, and the pressing head can be firmly attached to the stem, so that the pressing head can be prevented from coming off the stem.

In the discharger according to the present invention, the nozzle hole is opened forward, and a valve chamber is defined inside the head main body and communicated with the inside of the stem and communicated with the outside through the nozzle hole. A valve member that is disposed in the valve chamber and closes the nozzle hole in a forward-biased state, and the mounting cylinder member is disposed so as to be capable of moving upward relative to the head body. The rear end portion of the valve member is bent forward as it goes downward, the lower end portion thereof is disposed on the top wall portion, and the valve member is pressed when the head body is pressed against the mounting cylinder member The lever member supported so as to be swingable so as to be moved backward may be connected.
According to this configuration, when the pressing head is pushed down, the head main body is pushed down with respect to the mounting cylinder member, and the lever member swings, whereby the valve member moves backward. Thereby, the nozzle hole is opened. On the other hand, by releasing the pressing down of the pressing head, the entire pressing head moves upward together with the stem by the upward biasing force of the stem. Further, when the valve member is swung by the forward biasing force of the valve member, the nozzle hole is closed by the valve member, and the head main body moves upward with respect to the mounting cylinder member.
Thus, since the nozzle hole is opened and closed according to the movement of the head main body in the vertical direction with respect to the mounting cylinder member, it is possible to improve the liquid drainage and to ensure the sealing performance of the nozzle hole.

In the dispenser according to the present invention, the lower surface of the locking protrusion and the upper surface of the retaining protrusion may be flat surfaces extending in the radial direction.
According to this configuration, since the lower surface of the locking projection and the lower surface of the retaining projection are each formed on a flat surface extending in the radial direction, the locking projection and the retaining projection are securely engaged in the vertical direction. Can be made. Thereby, it can suppress reliably that a pressing head remove | deviates from a stem.

In the discharger according to the present invention, an urging member for urging the stem upward is disposed on the radially inner portion of the lower surface of the locking projection, and the detachment member is disposed on the radially outer portion. The stop protrusion may be engaged.
According to this configuration, since both the urging member and the retaining protrusion can be connected to the locking protrusion, it is possible to prevent the shape of the mounting cylinder member from becoming complicated. Therefore, cost reduction can be achieved.
Also, by connecting the urging member and the retaining projection on the same surface of the locking projection, the urging member and the retaining projection are discharged compared to the case where the mounting cylinder member is connected to a different part in the vertical direction. The device can be downsized in the vertical direction.

  According to the dispenser according to the present invention, it is possible to suppress the pressing head from coming off the stem.

It is sectional drawing which follows the axial direction of the discharge container which concerns on embodiment. It is a bottom view of the mounting cylinder member concerning an embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a description will be given by taking as an example a discharge container configured by attaching the discharge device of the present invention to a container body.
As shown in FIG. 1, a discharge container 1 according to this embodiment includes a bottomed cylindrical container main body 2 in which contents are accommodated, and a discharger 3 that is detachably attached to a mouth portion 2 a of the container main body 2. It is equipped with.

The discharger 3 includes a pressing head 11 having a nozzle hole 10 that discharges the content, and a pump 12 that supplies the content toward the nozzle hole 10.
The pump 12 mainly includes a mounting cap 21, a cylinder 22, a stem 23, a stem biasing member (biasing member) 24, a piston 25, and a piston guide 26.

  Here, the mounting cap 21, the cylinder 22, the stem 23, the stem urging member 24, the piston 25, and the piston guide 26 are each formed in a cylindrical shape and arranged with their respective central axes positioned on a common axis. It is installed. Hereinafter, the common axis is referred to as an axis O, and the direction toward the discharger 3 in the direction of the axis O (vertical direction) is referred to as the upper side, and the direction toward the container body 2 is referred to as the lower side. A direction orthogonal to the axis O in a plan view viewed from the direction of the axis O is referred to as a radial direction, and a direction around the axis O is referred to as a circumferential direction.

  An annular ring plate portion 32 protruding toward the inside in the radial direction is formed at the upper end portion of the lower cylinder portion 31 attached to the mouth portion 2a of the container body 2 in the attachment cap 21. The ring plate part 32 faces the upper end opening edge of the mouth part 2a in the direction of the axis O. The annular plate part 32 is formed with an upper cylinder part 33 extending upward. The upper cylinder portion 33 is formed with a smaller diameter than the lower cylinder portion 31.

The cylinder 22 is disposed in the container main body 2 in a state where the mounting cap 21 is mounted on the container main body 2. The cylinder 22 includes a cylinder cylinder 35 and a mounting flange portion 36 that protrudes radially outward from the upper end edge of the cylinder cylinder 35.
The mounting flange portion 36 is sandwiched in the direction of the axis O between the upper end opening edge of the mouth portion 2a and the above-described annular plate portion 32 in a state where the packing is sandwiched between the mounting flange portion 36 and the upper end opening edge of the mouth portion 2a. Has been.

  The stem 23 is configured to be pushable in an upward biased state. The stem 23 has a first stem 41 and a second stem 42. The first stem 41 and the second stem 42 each have a cylindrical shape arranged coaxially with the axis O. At least the lower part of the first stem 41 is accommodated in the cylinder cylinder 35. A diameter-expanded portion 43 having a diameter larger than that of the upper end portion is formed at the lower end portion of the first stem 41.

The second stem 42 includes an outer fitting tube 45 fitted on the upper end of the first stem 41, a locking projection 46 projecting radially outward from the upper edge of the outer fitting tube 45, It has.
The outer fitting tube 45 is undercut fitted to the upper end portion of the first stem 41.
The locking projection 46 has a thickness that gradually decreases in the direction of the axis O as it goes outward in the radial direction in a longitudinal sectional view along the direction of the axis O. Specifically, the upper surface of the locking protrusion 46 is formed as a curved surface that protrudes upward. On the other hand, the lower surface of the locking projection 46 is a flat surface extending in the radial direction. Note that the upper surface of the locking projection 46 may be an inclined surface that extends downward as it goes outward in the radial direction.

  In the present embodiment, the locking projection 46 is formed on the upper end edge of the second stem 42 over the entire circumference. However, a plurality of the locking projections 46 may be arranged at intervals in the circumferential direction. Further, the locking projection 46 may be disposed at a position other than the upper end edge of the second stem 42 in the axis O direction. Note that, as in the present embodiment, dividing the stem 23 into the first stem 41 and the second stem 42 can improve the degree of freedom of material selection and the like. However, the first stem 41 and the second stem 42 may be integrated.

A retaining member 51 for retaining the first stem 41 from the cylinder 22 is provided in the cylinder cylinder 35 described above. The retaining member 51 includes a fitting cylinder 52 fitted in the cylinder cylinder 35 and a restricting portion 53 that projects radially inward from the upper end portion of the fitting cylinder 52.
The fitting cylinder 52 surrounds a portion of the first stem 41 located in the cylinder cylinder 35 from the outside in the radial direction.
The restricting portion 53 is disposed above the enlarged diameter portion 43 of the first stem 41 and faces the enlarged diameter portion 43 in the direction of the axis O. The restricting portion 53 is configured such that the first stem 41 can contact from below.

  The stem urging member 24 is interposed between the retaining member 51 and the stem 23 and urges the stem 23 upward. Specifically, the stem urging member 24 surrounds the stem 23 from the outside in the radial direction. The lower end portion of the stem urging member 24 is in contact with the restriction portion 53 described above from above. The upper end portion of the stem urging member 24 is in contact with the radially inner portion of the lower surface of the locking projection 46 described above from below.

  The piston 25 is accommodated in a space located below the stem 23 in the cylinder 22. The piston 25 is slidable in the vertical direction in close contact with the inner peripheral surface of the cylinder cylinder 35 in conjunction with the vertical movement of the stem 23.

The piston guide 26 includes a bottomed cylindrical closing member 55 disposed coaxially with the axis O, and a pedestal portion 56 projecting radially outward from the closing member 55.
The upper part of the closing member 55 is fitted into the first stem 41 from below. Accordingly, the closing member 55 closes the first stem 41 from below. A communication hole 57 for communicating the inside and outside of the closing member 55 is formed in the lower portion of the peripheral wall portion of the closing member 55.
The pedestal portion 56 protrudes radially outward from a portion located below the communication hole 57 in the peripheral wall portion of the closing member 55. The pedestal portion 56 supports the piston 25 from below in the cylinder cylinder 35.

The pressing head 11 includes a mounting cylinder member 61, a head main body 62, a valve member 63, and a lever member 64.
The mounting cylinder member 61 connects the head main body 62 and the stem 23. The mounting cylinder member 61 has a top cylinder shape that is arranged coaxially with the axis O. The mounting cylinder member 61 includes a mounting cylinder 71 fitted in the upper end portion of the stem 23 (first stem 41), a surrounding cylinder 72 that surrounds the upper end portion of the stem 23 from the outside in the radial direction, and an upper end of the mounting cylinder 71. A ceiling wall portion 74 that connects the edges and the upper edges of the surrounding cylinder 72.
At the upper end edge of the mounting cylinder 71, there is formed a sliding cylinder 75 that communicates with the mounting cylinder 71 and extends upward. The sliding cylinder 75 is arranged coaxially with the axis O. The diameter of the sliding cylinder 75 is gradually increased upward. The sliding cylinder 75 has at least a lower outer diameter that is smaller than the outer diameter of the mounting cylinder 71.

The head main body 62 includes a head unit 70 and a nozzle cylinder 80.
The head part 70 is formed in a top cylinder shape. The head part 70 covers the mounting cylinder member 61 from above in a state where the peripheral wall part 81 is inserted into the upper cylinder part 33 described above. Specifically, the peripheral wall portion 81 of the head portion 70 is supported by the upper tube portion 33 so as to be movable up and down with respect to the upper tube portion 33. In addition, the surrounding cylinder 72 of the mounting cylinder member 61 described above is fitted in the peripheral wall part 81 of the head part 70 so as to be slidable on the inner peripheral surface of the peripheral wall part 81. A bulging portion 82 that bulges inward in the radial direction is formed at a lower portion of the peripheral wall portion 81 in the head portion 70. The bulging portion 82 can be locked to the lower end edge of the surrounding cylinder 72 from below. A radial gap may be provided between the inner peripheral surface of the peripheral wall portion 81 and the outer peripheral surface of the surrounding cylinder 72.

  A through hole 81 a that penetrates the peripheral wall 81 in the first direction L <b> 1 in the radial direction is formed in the upper portion of the peripheral wall 81. The through hole 81a is formed in a portion of the peripheral wall portion 81 that faces one side in the first direction L1. In the following description, the direction facing one of the first directions L1 is referred to as the front, and the direction facing the other is referred to as the rear.

  A connecting cylinder 83 extending forward is formed at the opening edge of the through hole 81a in the peripheral wall 81. A valve accommodating portion 84 extending rearward is formed at the opening edge of the through hole 81 a in the peripheral wall portion 81. The valve accommodating portion 84 is formed in a box shape extending in the first direction L1. The upper portion of the valve housing portion 84 is connected to the top wall portion 85 of the head portion 70. The front end opening of the valve accommodating portion 84 communicates with the inside of the connecting cylinder 83 through the through hole 81a.

  A lower wall opening 87a that penetrates the lower wall portion 87 in the axis O direction is formed in the lower wall portion 87 of the valve accommodating portion 84 that faces the top wall portion 85 in the axis O direction. A hanging cylinder 88 extending downward is formed at the opening edge of the lower wall opening 87 a in the lower wall portion 87. The above-mentioned sliding cylinder 75 is fitted in the hanging cylinder 88 so as to be slidable in the vertical direction.

  The nozzle cylinder 80 is formed in a circular arc shape that protrudes upward in a longitudinal sectional view along the axis O direction. Specifically, the nozzle cylinder 80 hangs downward as it goes forward. The nozzle cylinder 80 may extend linearly along the first direction L1, or may extend upward as it goes forward.

  The rear end portion of the nozzle tube 80 is fitted into the connection tube 83 and the valve housing portion 84 through the through hole 81a. An inner flange portion 89 that projects inward of the nozzle cylinder 80 is formed at the front end edge of the nozzle cylinder 80. A portion of the nozzle cylinder 80 located inside the inner flange portion 89 constitutes the nozzle hole 10 described above that opens obliquely downward toward the front. The nozzle cylinder 80 and the valve accommodating portion 84 constitute a valve chamber A communicating with the outside through the nozzle hole 10 and communicating with the inside of the stem 23 through the lower wall opening 87a.

  The valve member 63 is accommodated in the valve chamber A described above so as to be movable in the first direction L1. The front part (mainly the part located in the nozzle cylinder 80) of the valve member 63 hangs downward as it goes forward. At the front end portion of the valve member 63, a seal portion 95 that can be contacted and separated from the rear is formed on the inner peripheral edge of the inner flange portion 89 as the valve member 63 moves along the first direction L1.

  The rear portion of the valve member 63 extends along the first direction L1 in the valve accommodating portion 84. A skirt portion 91 that gradually increases in diameter toward the rear is formed at the rear portion of the valve member 63. A reverse skirt portion 92 is formed at the rear end portion of the skirt portion 91 and gradually increases in diameter toward the front. The reverse skirt portion 92 is slidably fitted along the first direction L1 in a valve tube 93 protruding forward from the rear wall portion 86 of the valve housing portion 84. A valve biasing member 94 that biases the valve member 63 forward is interposed between the skirt portion 91 and the rear wall portion 86. In this embodiment, the valve member 63 is divided into a front part and a rear part. However, the present invention is not limited to this configuration, and the valve member 63 may be integrally formed.

The lever member 64 is disposed in a portion located outside the valve housing portion 84 in the head portion 70. The lever member 64 moves the valve member 63 backward when the head portion 70 moves downward with respect to the mounting cylinder member 61.
The lever member 64 is formed in an L shape in a longitudinal sectional view along the axis O direction. Specifically, the lever member 64 includes a first plate portion 100 extending in the direction of the axis O, and a second plate portion 101 bent forward from the lower end portion of the first plate portion 100. A support pin 105 extending in a second direction L2 orthogonal to the first direction L1 in a plan view as viewed from the axis O direction is formed on a connecting portion of the lever member 64 between the first plate portion 100 and the second plate portion 101. Is protruding. The support pin 105 is swingably supported by the bearing plate 106 fitted in the peripheral wall portion 81 of the head portion 70. The bearing plate 106 may be provided integrally with the head unit 70.

An upper end portion of the first plate portion 100 is connected to a rear end portion of the valve member 63 (a portion protruding rearward from the valve accommodating portion 84) behind the valve accommodating portion 84.
The second plate portion 101 extends forward as it goes downward. The lower end portion of the second plate portion 101 is configured to be slidable on the ceiling wall portion 74 described above as the lever member 64 swings. In this embodiment, for example, the urging force of the stem urging member 24 is made larger than the urging force of the valve urging member 94, or the frictional force between the sliding cylinder 75 and the hanging cylinder 88 or the lever member 64. The pressing force of the head main body 62 against the mounting cylinder member 61 is smaller than the pressing force of the stem 23 by appropriately setting the frictional force generated when swinging.

  Here, the surrounding cylinder 72 of the mounting cylinder member 61 described above is formed with a retaining protrusion 110 that protrudes inward in the radial direction. In the sectional view along the axis O direction, the retaining protrusion 110 gradually decreases in thickness in the axis O direction toward the inner side in the radial direction. Specifically, the lower surface of the retaining protrusion 110 extends upward toward the inside in the radial direction. The upper surface of the retaining protrusion 110 is formed as a flat surface extending in the radial direction. The retaining protrusion 110 can be engaged with the radially outer portion of the lower surface of the locking protrusion 46 described above from below. Therefore, the radially inner end portion of the retaining protrusion 110 is spaced from the outer peripheral surface of the second stem 42 in the radial direction. On the other hand, the radially outer end of the locking protrusion 46 described above is spaced radially from the inner peripheral surface of the surrounding cylinder 72.

  As shown in FIG. 2, the retaining protrusions 110 are respectively disposed on portions of the surrounding cylinder 72 that face each other in the first direction L1. Each retaining protrusion 110 extends on both sides in the circumferential direction with a portion of the surrounding cylinder 72 facing in the first direction L1 as a center. Note that the retaining protrusion 110 may be formed over the entire circumference of the surrounding cylinder 72.

A reinforcing portion 114 is formed in a portion of the surrounding cylinder 72 that is opposed in the second direction L2. The reinforcing portion 114 is thicker in the radial direction than the portion other than the reinforcing portion 114 in the surrounding cylinder 72.
The reinforcing portion 114 is formed with a guide groove 115 that is recessed toward the inside in the radial direction. A guide rib (not shown) formed on the peripheral wall portion 81 of the head portion 70 is accommodated in the guide groove 115. As a result, the head unit 70 is guided to move in the direction of the axis O relative to the mounting cylinder member 61 and the rotation around the axis O relative to the mounting cylinder member 61 is restricted.

Next, the effect | action of the discharge container 1 mentioned above is demonstrated. In the following description, as shown in FIG. 1, the initial state is a state in which the pressing head 11 is at the upper end position and the valve member 63 closes the nozzle hole 10.
In the initial state shown in FIG. 1, in order to discharge the contents, first, the pressing head 11 is pushed down. In this embodiment, the pressing force of the head body 62 against the mounting cylinder member 61 is smaller than the pressing force of the stem 23. Therefore, the stem 23 is not pushed down, and the head main body 62 is pushed down with respect to the mounting cylinder member 61.

  Then, the lever member 64 swings around the support pin 105 against the front biasing force of the valve biasing member 94. Specifically, the lower end portion of the second plate portion 101 is pushed upward by the top wall portion 74 of the mounting cylinder member 61, and slides forward on the top wall portion 74. Moreover, the valve member 63 moves backward together with the first plate portion 100 by moving the first plate portion 100 backward. Thereby, the seal portion 95 of the valve member 63 is separated from the inner peripheral edge of the inner flange portion 89. As a result, the nozzle hole 10 is opened.

  In the process in which the head main body 62 is pushed down with respect to the mounting cylinder member 61, the head main body 62 moves against the mounting cylinder member 61 while the sliding cylinder 75 of the mounting cylinder member 61 slides on the inner peripheral surface of the hanging cylinder 88. Move down. Thereafter, the lower movement of the head main body 62 with respect to the mounting cylinder member 61 is restricted by the lower end edge of the hanging cylinder 88 coming into contact with the top wall 74 from above.

  Thereafter, when the pressing head 11 is further pushed down, the stem 23 moves downward together with the mounting cylinder member 61 and the head main body 62. Along with the downward movement of the stem 23, the piston 25 moves downward together with the stem 23, the piston guide 26, and the pressing head 11 while sliding on the inner peripheral surface of the cylinder cylinder 35. And when the piston 25 moves downward, the inside of the cylinder 22 is pressurized. As a result, the contents in the cylinder 22 flow upward through the gap between the piston 25 and the piston guide 26, and then flow into the piston guide 26 through the communication hole 57. The contents flowing into the piston guide 26 flow upward in the stem 23 (first stem 41), the mounting cylinder 71 of the mounting cylinder member 61, and the sliding cylinder 75, and then pass through the lower wall opening 87a. It flows into the valve chamber A. The contents flowing into the valve chamber A are discharged to the outside through the nozzle hole 10.

  When the pressing down of the pressing head 11 is released, the piston 25 moves upward together with the stem 23, the piston guide 26, and the pressing head 11 while the piston 25 slides on the inner peripheral surface of the cylinder cylinder 35 by the upward biasing force of the stem biasing member 24. To do. As the stem 23, the piston 25, and the piston guide 26 move upward, the inside of the cylinder 22 is depressurized. Thereby, the contents in the container body 2 are sucked into the cylinder 22 and the contents are supplied into the cylinder 22. For example, the upward movement of the stem 23, the piston 25, the piston guide 26, and the mounting cylinder member 61 is stopped when, for example, the stem 23 contacts the retaining member 51 from below.

Further, when the pressing down of the pressing head 11 is released, the valve member 63 moves forward by the forward biasing force of the valve biasing member 94. As a result, the seal portion 95 of the valve member 63 comes into contact with the inner peripheral edge of the inner flange portion 89. As a result, the nozzle hole 10 is closed by the valve member 63. Further, the lever member 64 swings around the support pin 105 as the valve member 63 moves forward. Specifically, the first plate portion 100 moves forward together with the valve member 63. Further, the second plate portion 101 moves rearward while sliding on the top wall portion 74 of the mounting cylinder member 61. As a result, the head main body 62 moves upward with respect to the mounting cylinder member 61.
As a result, the initial state is restored.

  Here, in the ejector 3 of the present embodiment, the head main body 62 may move upward relative to the mounting cylinder member 61 when an external force acting upward is applied to the head main body 62. When the head main body 62 moves upward with respect to the mounting cylinder member 61, the bulging portion 82 is locked to the lower end edge of the surrounding cylinder 72. Thereafter, when the head main body 62 further moves upward, the mounting cylinder member 61 moves upward with respect to the stem 23 together with the head main body 62.

  At this time, in this embodiment, the retaining projection 110 that engages with the locking projection 46 of the stem 23 from below is formed on the surrounding cylinder 72, so the retaining projection 110 engages with the locking projection 46. Thus, the upward movement of the pressing head 11 with respect to the stem 23 is restricted, and the pressing head 11 can be firmly attached to the stem 23. Thereby, it is possible to suppress the pressing head 11 from coming off the stem 23.

In the present embodiment, the lever member 64 that is swingably supported so as to move the valve member 63 backward when the head main body 62 is pressed with respect to the mounting cylinder member 61 is connected to the rear end portion of the valve member 63. It was.
According to this configuration, the nozzle hole 10 is opened and closed in accordance with the movement of the head main body 62 in the direction of the axis O with respect to the mounting cylinder member 61, so that liquid breakage can be improved and the sealing performance of the nozzle hole 10 can be improved. It can be secured.

In this embodiment, since the lower surface of the locking protrusion 46 and the lower surface of the retaining protrusion 110 are formed as flat surfaces, the retaining protrusion 46 and the retaining protrusion 110 are reliably engaged in the axis O direction. Can be made. Thereby, it can suppress reliably that the pressing head 11 remove | deviates from the stem 23. FIG. An opening 74 a that penetrates the top wall 74 in the axis O direction is formed in a portion of the top wall 74 that faces each retaining protrusion 110 in the axis O direction. Thereby, at the time of shaping | molding of the mounting cylinder member 61, die cutting becomes easy and the complication of a metal mold | die structure can be suppressed. As a result, it is possible to easily form the mounting cylinder member 61 while ensuring the amount of protrusion of the retaining protrusion 110 in the radial direction, and to improve the manufacturing efficiency.
In addition, by forming the opening 74a in the top wall 74, the mold having a portion for molding the upper surface of the retaining projection 110 can be moved in the direction of the axis O when the mold is opened. Accordingly, since the draft angle in the radial direction is not considered, the upper surface of the retaining protrusion 110 can be a flat surface extending in the radial direction, and the engagement protrusion 46 and the retaining protrusion 110 are engaged with each other. Can be ensured.

In the present embodiment, the stem urging member 24 is disposed in the radially inner portion of the lower surface of the locking projection 46, and the retaining protrusion 110 is engaged with the radially outer portion.
According to this configuration, since both the stem urging member 24 and the retaining protrusion 110 can be connected to the locking protrusion 46, it is possible to prevent the mounting cylinder member 61 from becoming complicated. Therefore, cost reduction can be achieved.
Further, the stem urging member 24 and the retaining projection 110 are connected on the same surface of the locking projection 46 so that the stem urging member 24 and the retaining projection 110 are different in the axis O direction of the mounting cylinder member 61. Compared with the case of connecting to the part, the size of the discharger 3 in the direction of the axis O can be reduced.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

In the above-described embodiment, the ejector 3 having the so-called shut-off nozzle mechanism in which the nozzle hole 10 is opened and closed according to the movement of the head main body 62 in the axis O direction with respect to the mounting cylinder member 61 has been described. The present invention can be applied to various types of dispensers.
In the above-described embodiment, the case where the nozzle hole 10 opens forward (in the direction intersecting the axis O direction) has been described. However, the present invention is not limited to this configuration. For example, the nozzle hole may be opened upward.

  In the above-described embodiment, the configuration in which the mounting cylinder member 61 and the head main body 62 are separate has been described. However, the configuration is not limited to this configuration, and the mounting cylinder member 61 and the head main body 62 may be integrated. .

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in the embodiment mentioned above by the well-known component, and you may combine the said modification suitably.

DESCRIPTION OF SYMBOLS 3 ... Discharge device 11 ... Pressing head 23 ... Stem 24 ... Stem biasing member (biasing member)
46 ... Locking projection 61 ... Installation cylinder member 62 ... Head body 63 ... Valve member 71 ... Installation cylinder 72 ... Surrounding cylinder 74 ... Top wall 10 ... Nozzle hole 64 ... Insulator member

Claims (4)

A dispenser in which a pressing head is mounted on a stem standing upright so as to be able to be pushed in an upward biased state,
The pressing head is
A head body formed with a nozzle hole communicating with the inside of the stem and discharging the contents;
A ceiling wall portion, a mounting cylinder extending downward from the ceiling wall portion and fitted into an upper end portion of the stem, and an upper end portion of the stem extending downward from the ceiling wall portion And having a surrounding cylinder that surrounds from the outside in the radial direction perpendicular to the vertical direction, and a mounting cylinder member that connects the head body and the stem,
The oval tube protrudes toward the inside in the radial direction and engages from below the locking projection with a locking projection protruding from the outer peripheral surface of the stem toward the outside in the radial direction. A discharger characterized in that a stop projection is formed. The nozzle hole opens forward,
Inside the head body, a valve chamber is defined which communicates with the stem and communicates with the outside through the nozzle hole.
A valve member disposed in the valve chamber and closing the nozzle hole in a forward biased state;
The mounting cylinder member is disposed so as to be movable upward relative to the head body,
The rear end portion of the valve member is bent forward as it goes downward, the lower end portion thereof is disposed on the top wall portion, and the valve member is pressed when the head body is pressed against the mounting cylinder member The ejector according to claim 1, wherein a lever member that is swingably supported so as to move backward is connected.   The discharge device according to claim 1 or 2, wherein a lower surface of the locking protrusion and an upper surface of the retaining protrusion are flat surfaces extending in the radial direction.   A biasing member that biases the stem upward is disposed on the radially inner portion of the lower surface of the locking projection, and the retaining projection is engaged with the radially outer portion. The dispenser according to any one of claims 1 to 3, wherein the dispenser is characterized in that

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