JP2017065757A - Discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge device capable of introducing preferably ambient air into a container body during discharge of a content, and preventing a content in the container body from leaking from an ambient air introduction path.SOLUTION: An opening/closing valve 97 comprises: a thick-walled cylindrical part 98 which is fitted to a fitting recess part 72B formed on a guide cylindrical part 45, and whose lower end opening edge contacts an upper end opening edge of a cylinder 42; and a thin-walled valve body 99 protruding inward in a radial direction from the thick-walled cylindrical part 98, and capable of blocking communication between an ambient air introduction path S1 and an upper space K1 in the cylinder 42.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a dispenser.

Conventionally, for example, a dispenser disclosed in Patent Document 1 below is known.
This discharge device is attached to the mouth of the container main body in which the contents are stored, and is mounted on the upper end of the stem so as to be movable downward in an upwardly biased state, thereby forming a discharge hole for the contents. And a mounting cap for mounting the pump on the mouth of the container body, and the stem and the discharge head are moved downward to discharge the contents from the discharge holes.

JP 2002-104471 A

By the way, in this type of discharger, when an outside air introduction path is formed between the stem and the guide cylinder part surrounding the stem, when the inside of the container body is depressurized by the discharge of the contents, the pressure difference between the inside and outside of the container Thus, outside air is taken into the container body through the outside air introduction path.
However, in the above conventional configuration, the outside air introduction path and the inside of the pump communicate with each other, so that the discharge container mounted on the container body falls down, is used in an inverted or inclined state, and is also stored. There was a concern that the contents in the container body would leak out.

  Therefore, the present invention provides a discharger capable of preventing the contents in the container body from leaking out from the outside air introduction path while allowing the outside air to be satisfactorily introduced into the container body when the contents are discharged.

(1) A dispenser according to the present invention is attached to a mouth of a container main body in which contents are accommodated, and is attached to an upper end portion of the stem, which is disposed in an upwardly biased state and freely movable downward. A pump having a discharge head formed with a discharge hole for an object, and a mounting cap for mounting the pump to the mouth of the container body, and moving the stem and the discharge head downward to A discharger that discharges from the discharge hole, wherein the pump includes a guide tube portion that surrounds the stem from a radially outer side, a piston that is linked to the vertical movement of the stem, and the piston that slides up and down inside. An outside air introduction hole that is removably closed by the piston, and is formed on an outer peripheral surface of the stem and an inner peripheral surface of the guide tube portion. Between An outside air introduction path that can communicate with an upper space located above the piston in the cylinder is formed, and the guide cylinder portion can block communication between the outside air introduction path and the upper space in the cylinder. An on-off valve is fitted, and the on-off valve is fitted in a fitting recess formed in the guide cylinder part, and a thick-walled cylinder part in which a lower end opening edge abuts on an upper end opening edge of the cylinder; A thin valve body that protrudes inward in the radial direction from the thick-walled cylindrical portion and is capable of blocking communication between the outside air introduction path and the upper space in the cylinder.

According to the discharger according to the present invention, when the discharge head, the stem, and the piston are integrally pressed against the cylinder, the lower space located below the piston in the cylinder is pressurized, The contents rise in the stem and are discharged from the discharge hole. In this process, the thin valve body of the on-off valve allows communication between the outside air introduction path and the upper space in the cylinder when the stem or the like is pressed, so that air passing through the outside air introduction path enters the upper space in the cylinder. be introduced.
Next, when the pressing of the discharge head, stem, and piston is released and these are restored and displaced upward, the lower space in the cylinder becomes negative pressure, and the content in the container body enters the lower space in the cylinder. be introduced. In this process, even if the thin valve body cuts off the communication between the outside air introduction path and the upper space in the cylinder, the outside air introduction hole is opened because the piston is lowered. Air can flow into the container body. Thereby, the generation of resistance due to the compression of air in the upper space in the cylinder when the piston is raised is suppressed, and the generation of negative pressure in the container body is also suppressed.
Since the air inside and outside the pump is circulated by the operation of the thin valve body, the air can be circulated even with a small input or pressure difference, and the operability of the on-off valve can be improved.
And even if the discharge container with the discharger attached to the container body falls down, etc., the thin valve body of the on-off valve blocks the communication between the outside air introduction path and the upper space in the cylinder, so that the contents inside the container body Even if an object reaches the upper space in the cylinder, the contents can be prevented from leaking outside through the outside air introduction path.
In addition, the on-off valve has a thick cylindrical portion that is thicker than the thin valve body, and this thick cylindrical portion is fitted in the fitting recess of the guide cylindrical portion. Sometimes, the fitting portion of the on-off valve is difficult to unintentionally deform, improving the setability of the on-off valve and securing the fitting force to prevent the on-off valve from falling off.

(2) The discharge device may be configured such that an uneven gap forming portion is formed at an inner peripheral edge portion on an upper surface of the thin valve body, and the stem is fitted in the thin valve body so as to be slidable in the vertical direction. good.

  In this case, when the stem is located below the rising end position, the thin valve body is elastically deformed so as to be turned downward, through the gap formed between the stem and the gap forming portion, Communication between the outside air introduction path and the upper space in the cylinder can be allowed.

(3) In the discharge device, the opening / closing valve includes the thin valve body in the center in the vertical direction of the thick tube portion, and the thin valve body has the gap forming portion formed on the upper and lower surfaces. But it ’s okay.

  In this case, when assembling the on-off valve to the guide tube portion, it is not necessary to confirm the vertical direction of the on-off valve, and the on-off valve can be easily assembled.

(4) The discharger is configured such that an annular groove that is recessed toward the outer side in the radial direction is formed over the entire circumference at a connection portion with the thin valve body on the inner peripheral surface of the thick-walled cylindrical portion. But it ’s okay.

  In this case, both the length in the radial direction of the thin valve body and the thickness in the radial direction at the opening end of the thick cylindrical portion can be ensured, and the operability and setability of the on-off valve are improved. be able to.

  According to the dispenser according to the present invention, it is possible to prevent the contents in the container body from leaking out from the outside air introduction path while allowing the outside air to be satisfactorily introduced into the container body when the contents are discharged.

It is a longitudinal cross-sectional view which shows the discharge device in embodiment of this invention. It is a principal part enlarged view of FIG. It is action explanatory drawing which shows the time of discharge operation of the said discharger. It is the top view which looked at the on-off valve of the said discharger from the axial direction. It is a side view including the cross section of the said on-off valve. It is a top view equivalent to FIG. 4 which shows the other form of the said on-off valve. It is a side view equivalent to FIG. 5 which shows the other form of the said on-off valve.

  Hereinafter, a discharger 1 according to an embodiment of the present invention will be described with reference to the drawings. In each drawing used in the following description, the scale is appropriately changed to make each member a recognizable size.

  As shown in FIG. 1, the dispenser 1 of the present embodiment includes a top cylindrical mounting cap 11 attached to a mouth 3 of a container body 2 in which a liquid content (not shown) is accommodated, and a container body 2. A pump 14 having a discharge head 13 provided with a discharge hole 13 </ b> A for the contents opened toward the front and disposed at the mouth 3 in an upwardly biased state and standing at the rear of the pump 14. A support portion 15 provided, and a pressing member 16 that is disposed on the support portion 15 so as to be rotatable around the rotation axis C1 and that pushes down the discharge head 13 are provided.

In the ejector 1, when the pressing member 16 rotates downward (see FIG. 3), the ejection head 13 moves downward, and the contents are ejected from the ejection hole 13A.
The discharge head 13 includes a cylindrical stem 12 and a head body 30 that is attached to the upper end of the stem 12 and has a discharge hole 13A.

  The mounting cap 11 and the stem 12 are arranged in a state where their respective central axes are located on a common axis. Hereinafter, this common axis is referred to as a central axis O, and the direction from the pump 14 toward the stem 12 along the central axis O in FIG. In addition, a direction orthogonal to the central axis O in a plan view viewed from the central axis O is a radial direction, and a direction around the central axis O is a circumferential direction. Furthermore, the direction (left side in FIG. 1) in which the discharge holes 13A of the discharge head 13 face in the radial direction is the front, the opposite direction is the rear, and the direction orthogonal to the vertical direction and the front-rear direction is the left-right direction.

  Referring also to FIG. 2, the mounting cap 11 is a cap for mounting the pump 14 to the mouth 3 of the container body 2. The mounting cap 11 has a top wall 21 having a circular shape in plan view with an opening formed in the center, and a cylindrical peripheral wall 22 extending downward from the outer peripheral edge of the top wall 21. . The top wall portion 21 and the peripheral wall portion 22 are disposed coaxially with the central axis O.

From the inner peripheral edge portion of the top wall portion 21, the presser plate portion 23 that inclines gradually extends downward from the outer side in the radial direction toward the inner side.
On the inner peripheral surface of the peripheral wall portion 22, a female screw that is screwed to a male screw formed on the outer peripheral surface of the mouth portion 3 of the container body 2 is formed. The mounting cap 11 is not limited to the case where the mounting cap 11 is screwed to the mouth portion 3 of the container main body 2, and may be mounted by, for example, undercut fitting.

  The pump 14 includes a discharge head 13, a double cylindrical piston 41 linked to the stem 12 of the discharge head 13, a cylindrical cylinder 42 in which the piston 41 is slidably moved up and down, and the inside of the stem 12. A bottomed cylindrical piston guide 43 extending downward from the piston 41 and penetrating the inside of the piston 41 in the vertical direction, a spherical valve body 44 disposed in the cylinder 42, and a cylinder surrounding the stem 12 from the outside And a guide tube portion 45 having a shape.

  The stem 12 is inserted inside the guide tube portion 45 so as to be movable up and down. The upper portion of the stem 12 protrudes upward from the upper end of the guide tube portion 45. The lower end portion of the stem 12 is disposed at the same height as the lower end portion of the guide tube portion 45. An outside air introduction path S <b> 1 is formed between the outer peripheral surface of the upper portion of the stem 12 and the inner peripheral surface of the upper portion of the guide cylinder portion 45.

The upper cylindrical portion 12 </ b> A of the stem 12 extends below the center of the stem 12 in the vertical direction. A lower cylinder portion 12C having a diameter larger than that of the upper cylinder portion 12A is continuously provided below the upper cylinder portion 12A via a step wall portion 12B that forms a step surface 12BS orthogonal to the axial direction.
A mounting cylinder portion 31 (to be described later) of the head body 30 is fitted and held on the upper portion of the upper cylinder portion 12A of the stem 12 from above.
The upper portion of the piston guide 43 is fitted and held from below at the lower portion of the upper cylindrical portion 12A of the stem 12.
At the lower end of the stem 12, a cylindrical enlarged portion 12D having a diameter larger than that of the lower cylindrical portion 12C is formed, and a relatively thin cylindrical elastic portion 25 connected to the lower portion of the enlarged diameter portion 12D is formed. Has been.

The head main body 30 includes a top cylindrical mounting cylinder 31 fitted in the upper cylindrical part 12A of the stem 12, and a nozzle cylindrical part 32 protruding forward from the front surface of the mounting cylinder 31. Have.
On the top wall portion of the mounting cylinder portion 31, a pressed protrusion 30 </ b> A protrudes upward. The pressed protrusion 30 </ b> A is disposed at the center in the left-right direction of the top wall portion of the mounting cylinder portion 31. The pressed protrusion 30A is formed in a plate shape whose front and back faces in the left-right direction, and the front end portion and the rear end portion in the upper end portion are each formed in a protruding curve shape when viewed from the left-right direction.
On the lower surface of the top plate portion 90, a recessed portion 90A is formed in which the upper end portion of the pressed protrusion 30A is accommodated so as to be slidable back and forth.
Inside the nozzle cylinder portion 32, a core rod body 35 extending in the front-rear direction and a top cylindrical tip 36 attached to the front end portion of the core rod body 35 are disposed.

The core rod body 35 has a plurality of flow channel grooves 35 </ b> A that allow the contents to flow between the outer peripheral surface and the inner peripheral surface of the nozzle cylinder portion 32.
The tip 36 is disposed coaxially with the core rod body 35. The tip 36 includes a cylindrical tip tube portion 37 attached to the outer periphery of the front end portion of the core rod body 35, and an end wall portion 38 provided at the front end portion of the tip tube portion 37.
The tip cylinder part 37 is fitted in the nozzle cylinder part 32. The end wall portion 38 is in contact with the distal end surface of the core rod body 35. A spin channel 38 </ b> A communicating with the channel groove 35 </ b> A of the core rod body 35 is formed on the rear surface of the end wall portion 38 facing the front end surface of the core rod body 35. A discharge hole 13A communicating with the spin flow path 38A is formed in the central portion of the end wall portion 38.
The chip 36 can discharge the contents in a mist form. Further, by changing the tip 36 and the nozzle tip shape, etc., it is possible to discharge in a foam shape, a straight shape, or the like. For example, by providing a foaming member such as a mesh at the tip of the nozzle of the present embodiment, foamy discharge can be performed.

  Disposed behind the upper cylindrical portion 12A of the stem 12 is a discharge restricting member 75 that restricts the downward movement of the discharge head 13 and makes it impossible to discharge the contents. When the discharge restricting member 75 is in a locked position sandwiched between the upper end surface of the guide tube portion 45 and the lower surface of the rear protrusion 13 </ b> C projecting behind the upper end portion of the mounting tube portion 31, The downward movement is restricted to make it impossible to discharge the contents. The discharge regulating member 75 is supported by a lock lever 76 that can rotate about a rotation axis C2 parallel to the rotation axis C1. By the rotation operation of the lock lever 76, the lock position and the lock position are retracted backward from the lock position. It can move between the unlock position (see FIG. 3). By the movement of the discharge regulating member 75, the lock and unlock of the discharge are switched.

  The piston 41 includes a cylindrical sliding portion 51 and a cylindrical closing portion 52 disposed on the radially inner side of the sliding portion 51. The upper end portion of the sliding portion 51 and the middle portion in the vertical direction of the closing portion 52 are integrally connected to each other. The sliding part 51 and the closing part 52 are arranged coaxially with the central axis O.

The lower end portion of the sliding portion 51 is curved so as to gradually warp outward in the radial direction from the upper side to the lower side. As a result, the lower end of the sliding portion 51 is in sliding contact with the inner peripheral surface of the cylinder 42.
The lower end portion of the closing portion 52 is curved so as to gradually warp inward in the radial direction as it goes downward from above. As a result, the lower end of the closing portion 52 is in contact with a contact portion 43E formed in the vicinity of a bottom portion 43B, which will be described later, of the piston guide 43.

The upper end portion of the blocking portion 52 is curved so as to gradually warp outward in the radial direction from the lower side toward the upper side, and is in sliding contact with the inner peripheral surface of the lower end portion of the stem 12.
At the upper end portion of the sliding portion 51, a receiving surface 51 </ b> A that is inclined so as to gradually go downward as it goes from the radially outer side to the inner side and receives the lower end opening edge of the elastic portion 25 of the stem 12 is formed.

  The cylinder 42 has an annular flange-shaped top wall portion 61 in plan view, a cylindrical upright cylindrical portion 62 extending upward from the inner peripheral side of the top wall portion 61, and the top wall portion 61. A cylindrical peripheral wall portion 63 extending downward from the opening edge, a cylindrical lower tube portion 64 having a diameter reduced from the lower end of the peripheral wall portion 63 and extending downward, and a lower tube portion And a tapered lower taper cylinder portion 65 tapering downward from the lower end of 64 and a connecting pipe portion 67 extending downward from the lower end of the lower taper cylinder portion 65. The top wall portion 61, the rising cylindrical portion 62, the lower cylindrical portion 64, the lower tapered cylindrical portion 65, and the connecting pipe portion 67 are disposed coaxially with the central axis O.

The rising cylinder part 62 is fitted into the lower cylinder part 64 of the guide cylinder part 45 from below and connected.
The peripheral wall 63 is formed with an outside air introduction hole 63 </ b> A that allows the inside and outside of the cylinder 42 to communicate with each other. The outside air introduction hole 63A is closed from the inside of the cylinder 42 by the outer peripheral surface of the piston 41 at the rising end position.

The lower cylinder part 64 has a plurality of vertical rib parts 64A along the vertical direction on its inner peripheral surface.
The lower taper cylindrical portion 65 has a valve body 44 disposed inside thereof. The valve body 44 can be freely attached to and detached from the inner peripheral tapered surface 65 </ b> A of the lower tapered cylindrical portion 65.
The valve body 44 is a so-called ball valve made of a synthetic resin formed in a spherical shape. The valve body 44 is preferably made of a synthetic resin in the same manner as other components from the viewpoint of reducing the labor of separation at the time of disposal. Further, the valve body 44 may be made of metal or the like. Furthermore, a check valve using various valve bodies instead of the ball valve may be used.

On the inner peripheral tapered surface 65 </ b> A of the lower taper cylinder portion 65, a restricting projection 65 </ b> B is provided so as to be inclined upward as it goes from the radially outer side to the inner side. The inner diameter of the upper end of the restriction projection 65B is made smaller than the outer diameter of the valve body 44. As a result, the restricting protrusion 65B restricts the valve body 44 from coming off upward.
The connecting pipe portion 67 is to be fitted and connected with a front / reverse dual-purpose adapter 101 described later.

  The piston guide 43 penetrates the piston 41 and is formed at the lower end of the guide tube portion 43A and is formed at the lower end of the guide tube portion 43A. And a bottom portion 43B. The bottom portion 43B is formed in a thick plate flange shape whose diameter is larger than that of the guide tube portion 43A. In the piston guide 43, a flow path 43F is formed along the axial direction.

  The flow path 43F opens upward at the upper end portion of the piston guide 43 and is closed by the bottom portion 43B at the lower end portion of the piston guide 43. The piston guide 43 can be lowered until the outer peripheral portion of the bottom portion 43B comes into contact with the upper ends of the plurality of vertical rib portions 64A in the lower cylindrical portion 64. A tapered contact portion 43E that gradually increases in diameter toward the upper surface of the bottom portion 43B is formed on the outer periphery of the lower end portion of the guide tube portion 43A. The lower end portion of the closing portion 52 of the piston 41 can come into contact with the contact portion 43E.

  For example, a plurality of communication holes 43 </ b> C are formed in the lower outer periphery of the guide cylinder portion 43 </ b> A and immediately above the contact portion 43 </ b> E so that the piston guide 43 and the cylinder 42 can communicate with each other. The communication hole 43C is located above the lower end portion of the contact portion 43E and the closed portion 52 of the piston 41. When the contact portion 43E and the closed portion 52 are in contact (close contact) with each other, the communication hole 43C is provided. And communication with the inside of the cylinder 42 are blocked.

For example, a plurality of through holes 43 </ b> D capable of communicating the piston guide 43 with the cylinder 42 are formed on the upper outer periphery of the guide cylinder portion 43 </ b> A. The through hole 43D is opened to communicate with the inside of the upper end portion of the lower cylindrical portion 12C of the stem 12.
The guide cylinder portion 43A is fitted and held in the upper cylinder portion 12A of the stem 12 above the through hole 43D. As a result, the piston guide 43 moves up and down together with the stem 12.

  The guide tube portion 45 is arranged coaxially with the central axis O. The guide tube portion 45 includes a cylindrical outer tube portion 71 into which the rising tube portion 62 of the cylinder 42 is fitted, and a cylindrical inner tube portion 72 disposed on the radially inner side of the upper portion of the outer tube portion 71. Have. The outer cylinder part 71 and the inner cylinder part 72 are arranged coaxially with the central axis O.

  The outer cylinder part 71 has the rising cylinder part 62 inserted in the lower part, and the on-off valve 97 described later is inserted in the upper part. At the upper end of the outer cylinder portion 71, a connection flange portion 73 protruding toward the inside in the radial direction is provided over the entire circumference. The inner peripheral edge of the connection flange portion 73 is connected to the lower outer periphery of the inner cylinder portion 72.

  A pair of upper and lower flange portions 74A and 74B projecting outward in the radial direction are provided at the lower portion of the outer cylinder portion 71 over the entire circumference. Of the upper and lower flange portions 74 </ b> A and 74 </ b> B, the lower flange portion 74 </ b> B located at the lower end of the outer cylinder portion 71 is disposed on the top wall portion 61 of the cylinder 42.

  Below the inner cylinder portion 72, an annular protrusion 72 </ b> A that protrudes downward from the lower surface of the connection flange portion 73 is formed. An annular fitting recess 72 </ b> B that opens downward is formed by the upper portions of the annular protrusion 72 </ b> A, the connection flange portion 73, and the outer cylinder portion 71. The upper part of the thick cylindrical portion 98 of the on-off valve 97 is fitted in the fitting recess 72B. An annular thin valve element 99 of the on-off valve 97 is sandwiched between the lower end surface of the annular protrusion 72A and the step surface 12BS of the stem 12. An upper cylinder portion 12A of the stem 12 is inserted into the inner cylinder portion 72 so as to be movable downward.

A portion of the top wall portion 61 of the cylinder 42 on the outer peripheral side of the rising cylinder portion 62 protrudes radially outward from the peripheral wall portion 63 of the cylinder 42, and is a flange disposed on the upper end opening edge of the mouth portion 3. The support plate portion 61A has a shape.
The lower flange portion 74B of the guide tube portion 45 is disposed on the support plate portion 61A and pressed against the presser plate portion 23 of the mounting cap 11 from above. An annular packing 66 is interposed between the support plate portion 61 </ b> A and the upper end opening edge of the mouth portion 3. The lower flange portion 74B is a sandwiching plate portion that is sandwiched between the support plate portion 61A and the pressing plate portion 23 in the vertical direction.

The support plate portion 61 </ b> A and the lower flange portion 74 </ b> B are sandwiched between the upper end opening edge of the mouth portion 3 of the container body 2 and the presser plate portion 23 in the vertical direction.
The lower flange portion 74B is formed to have an outer diameter 74r that is smaller than the outer diameter 61r of the support plate portion 61A.
The holding plate portion 23 is formed to have an inner diameter 23r that is smaller than the outer diameter 74r of the lower flange portion 74B.

  The support portion 15 that supports the pressing member 16 protrudes rearward from the guide tube portion 45, and includes a pair of side wall portions 77 that are spaced apart in the left-right direction, and a pair of side wall portions 77. And a rear wall 78 that connects the rear edges in the left-right direction.

  Each side wall 77 extends gradually upward from the front side toward the rear side. A projecting piece 80 having a semicircular shape protruding upward in a side view is formed at the upper end of each side wall 77. A columnar shaft body 77A is provided on the outer surface of the protruding piece 80 so as to extend in the left-right direction.

  Note that a virtual axis passing through the center of the shaft body 77A and extending in the left-right direction is defined as a rotation axis C1 of the pressing member 16. On the inner surface of the rear wall portion 78, a reinforcing wall 78A that protrudes upward so as to be positioned inside the protruding piece 80 and that connects the pair of side wall portions 77 and the protruding pieces 80 in the left-right direction is formed. .

A support recess 81 that is recessed downward is formed in the front portion of each side wall 77. Each support recess 81 supports a connecting shaft 96 of an extending body 95 described later.
The support portion 15 protrudes upward and rearward from the rear portion of the guide tube portion 45. For example, there may be a configuration in which a support portion protrudes upward and rearward from the rear portion of the mounting cap 11.

The pressing member 16 is attached to the support portion 15 via the shaft body 77A. Thereby, the pressing member 16 is connected to the support portion 15 so as to be rotatable (swingable) about the rotation axis C1.
The pressing member 16 includes a top plate portion 90 that covers the ejection head 13 from above, a front plate portion 91 that extends obliquely downward from the front edge of the top plate portion 90, and left and right sides of the top plate portion 90. A pair of side plate portions 92 extending downward from the side edge and facing in the left-right direction. The discharge head 13 is disposed in an internal space surrounded by the top plate portion 90 and the pair of side plate portions 92.

  The pair of side plate portions 92 are arranged so as to sandwich the ejection head 13 from the left-right direction. A cylindrical shaft body 13 </ b> B is provided on the outer surface of the discharge head 13 so as to extend in the left-right direction. On the inner surfaces of the pair of side plate portions 92, a head shaft hole portion 92B is formed in which the shaft body 13B is loosely fitted in a circular shape having a larger diameter than the shaft body 13B in a side view. The vertical rotation of the pressing member 16 and the vertical movement of the ejection head 13 are linked through the shaft body 13B and the head shaft hole portion 92B.

  The top plate 90 has a shape that is smoothly curved so as to bulge upward, and its rear end is in contact with the upper opening edge of the rear wall 78 of the support 15 from above. Thereby, the pressing member 16 is positioned in a state where further upward rotation about the rotation axis C1 is restricted.

  A first through hole 93 that penetrates the top plate portion 90 is formed in the front portion of the top plate portion 90. The first through-hole 93 is formed in the central portion of the top plate portion 90 in the left-right direction and is formed to open forward. Thereby, the front side part of the top-plate part 90 is made into the shape divided into the fork in the left-right direction.

  The front plate portion 91 extends obliquely downward from the front end edge of the top plate portion 90 divided into two branches toward the front. At this time, a second through hole 94 is formed in the upper portion of the front plate portion 91 so as to penetrate the front plate portion 91 and extend in the vertical direction. The second through hole 94 is formed in the central portion of the front plate portion 91 and is formed so as to open upward, and is integrally connected to the first through hole 93.

  In the second through hole 94, the nozzle cylinder portion 32 of the head body 30 is inserted. The nozzle cylinder portion 32 protrudes forward from the front plate portion 91 through the second through hole 94. The lower portion of the front plate portion 91 is a finger hook portion for hooking the fingertip.

  The pair of side plate portions 92 sandwich the ejection head 13 and the support portion 15 in the left-right direction. A shaft hole portion 92A into which the shaft body 77A is inserted is formed on the inner surface of the rear side of the pair of side plate portions 92. The pressing member 16 is supported so as to be rotatable around the shaft body 77A, that is, around the rotation axis C1.

The pressing member 16 is biased upward by an elastic force (spring force) from the extending body 95 that is a biasing member.
The extending body 95 is made of a synthetic resin, and is formed in a long and curved elastically deformable column shape. The extending body 95 is disposed below the top plate portion 90 of the pressing member 16, one end portion 95 </ b> A is connected to the support portion 15, and the other end portion 95 </ b> B is disposed inside the pressing member 16.

  The extending body 95 is curved so that the intermediate portion 95 </ b> C in the longitudinal direction protrudes rearward, and is disposed below the top plate portion 90 of the pressing member 16. A pair of extending bodies 95 are provided at intervals in the left-right direction so as to be disposed below the bifurcated portion of the top plate portion 90. One end portions 95A of the pair of extending bodies 95 are connected to each other by a columnar connecting shaft 96 extending in the left-right direction. As a result, the pair of extending bodies 95 and the connecting shaft 96 constitute one unit.

  The connecting shaft 96 is rotatably supported in a support recess 81 formed in the support portion 15. As a result, the one end portion 95 </ b> A of the extending body 95 is connected to the support portion 15 via the connecting shaft 96. The other end portion 95 </ b> B of the extending body 95 is in contact with the lower surface of the bifurcated portion of the top plate portion 90 from below. As a result, the other end portion 95 </ b> B of the extending body 95 is disposed inside the pressing member 16.

In such a configuration, as shown in FIG. 3, when the pressing member 16 is rotated downward about the rotation axis C <b> 1, the extension body 95 is moved so that the other end portion 95 </ b> B of the extension body 95 is moved downward accordingly. The ejection head 13 can be moved downward due to elastic deformation.
When the input for rotating the pressing member 16 downward is released, the extending member 95 urges the pressing member 16 upward, so that the pressing member 16 reversely rotates upward about the rotation axis C1. Return to the original position before rotation shown in.

  In the guide cylinder portion 45, an on-off valve 97 capable of blocking communication between the upper space K1 located above the piston 41 in the cylinder 42 and the outside air introduction path S1 is fitted. The on-off valve 97 is fitted with a fitting recess 72 </ b> B formed in the guide tube portion 45, and a thick tube portion whose lower end opening edge comes into contact with the upper end opening edge of the rising tube portion 62 of the cylinder 42. 98, projecting inward in the radial direction from the thick cylindrical portion 98, and sandwiched between the upwardly moving stem 12 and the guide cylindrical portion 45 to block communication between the outside air introduction path S1 and the upper space K1 in the cylinder 42 A possible thin-walled valve body 99. Reference symbol K2 in the figure indicates a lower space (pump chamber) located below the piston 41 in the cylinder 42.

With reference to FIGS. 2, 4, and 5, the on-off valve 97 includes a thin valve body 99 at the center of the thick cylindrical portion 98 in the vertical direction. The thin valve body 99 has a stem 12 fitted on its inner peripheral side so as to be slidable up and down. The inner peripheral edge of the thin valve element 99 is a seal surface 99S that can be brought into close contact with the outer peripheral surface of the stem 12.
For example, a concave gap forming portion 99A is formed on the inner peripheral edge portion of the upper and lower surfaces of the thin valve body 99. The gap forming portions 99A above and below the thin valve body 99 are arranged so as to be shifted from each other in the circumferential direction. Thereby, the seal surface 99S is formed so as to be continuous in the circumferential direction while meandering up and down when viewed from the radially inner peripheral side.

  When the discharge head 13, the stem 12 and the piston 41 are pressed together with the cylinder 42 to discharge the contents in the container body 2, the thin valve body 99 that is in close contact with the stem 12 is elastic so that it is turned downward. Deforms (see FIG. 3). At this time, since the seal surface 99S is separated from the outer peripheral surface of the stem 12 and the inner peripheral edge of the upper surface of the thin valve body 99 is in contact with the stem 12, the gap forming portion 99A causes the gap between the stem 12 and the thin valve body 99. A gap is formed. Through this gap, the outside air introduction path S1 and the upper space K1 in the cylinder 42 communicate with each other. Thereby, it becomes possible to introduce outside air into the upper space K1 through the outside air introduction hole 63A. The gap forming portion 99A is not limited to a concave shape, and may be a convex shape. In addition, by appropriately adjusting the size of the gap forming portion 99A, the gap formed between the stem 12 and the thin valve body 99 is set to a size that allows only air to pass without passing through the contents. Is also possible.

  An annular groove 98D that is recessed toward the outside in the radial direction is formed over the entire circumference at the connection portion with the thin valve body 99 on the inner peripheral surface of the thick-walled cylindrical portion 98. Thereby, the length L1 of the radial direction in the thin valve body 99 is ensured, and the thin valve body 99 is elastically deformed flexibly when the contents are discharged. Further, the radial thickness H1 at the upper and lower opening end portions 98A of the thick-walled cylindrical portion 98 is also ensured.

  The on-off valve 97 is fixedly attached to the guide tube portion 45 by fitting the upper portion of the thick tube portion 98 into the fitting recess 72B of the guide tube portion 45. If the radial thickness H1 of the end portion 98A is small, the thick-walled cylindrical portion 98 may be deformed when fitted into the fitting recess 72B, resulting in poor mounting. On the other hand, the on-off valve 97 of this embodiment is easy to ensure the radial thickness H1 at the opening end portion 98A of the thick-walled cylindrical portion 98, and the setability (assembly workability) of the on-off valve 97 is enhanced.

Here, the length L1 in the radial direction of the thin valve element 99 needs to be long in order to ensure the operability of the thin valve element 99. Further, the thickness H1 in the radial direction at the opening end portion 98A of the thick-walled cylindrical portion 98 needs to be thick in order to easily assemble the on-off valve 97. In the on-off valve 97, it is necessary to secure both the length L1 and the thickness H1 in a limited gap between the inner surface of the outer cylinder portion 71 and the outer surface of the upper cylinder portion 12A.
For this reason, in the on-off valve 97, the provision of the annular groove 98D achieves both securing of the length L1 and securing of the thickness H1.

  6 and 7 show other forms of the on-off valve 97. The on-off valve 97 does not have an annular groove 98D, and the inner peripheral surface of the thick-walled cylindrical portion 98 is formed in parallel with the axial direction. Good.

  As a preferable combination of the length L1 and the thickness H1, in the on-off valve 97, the radial thickness H1 of the opening end portion 98A of the thick cylindrical portion 98 is set to 0 with respect to the radial length L1 of the thin valve body 99. It was confirmed that the setability of the on-off valve 97 was good when .633L1 was set. In addition, when the radial thickness H1 of the opening end portion 98A of the thick-walled cylindrical portion 98 is 0.6L1 or more, the setability of the on-off valve 97 is good and the operability of the thin-walled valve body 99 is also good. .

  In the on-off valve 97 of this embodiment, a thin valve body 99 is provided at the center of the thick cylindrical portion 98 in the vertical direction, and gap forming portions 99A are formed on the upper and lower surfaces of the thin valve body 99, respectively. Except for the position of the portion 99A in the circumferential direction, the configuration is vertically symmetrical. For this reason, it is not necessary to confirm the vertical direction when setting in the fitting recess 72B, and the setability of the on-off valve 97 is further enhanced. When the on-off valve 97 is asymmetrical in the vertical direction, only the opening end 98A on the side that is fitted to the guide cylinder 45 needs to have a radial thickness as described above. On the outer peripheral portion of the thick-walled cylindrical portion 98, an air vent recess 98C is formed for smooth insertion into the fitting recess 72B.

Referring to FIG. 1, the adapter for both ends upright 101 is capable of supplying the contents into the cylinder 42 when the discharger 1 is upright and when the discharger 1 is upside down at the time of negative pressure in the cylinder 42.
The regular inverted adapter 101 includes a cylindrical main body cylinder portion 110. The main body cylinder part 110 is arranged coaxially with the central axis O.

  The main body cylinder part 110 includes a cylindrical outer cylinder member 111 whose upper end is externally fitted to the connecting pipe part 67 of the cylinder 42, an upper part disposed in the outer cylinder member 111, and a lower part from the outer cylinder member 111. An inner cylindrical member 112 protruding downward. In the lower end portion of the inner cylindrical member 112, an upper end portion of a cylindrical pipe 113 that circulates the contents in the container main body 2 is fitted. The outer cylindrical member 111, the inner cylindrical member 112, and the pipe 113 are arranged coaxially with the central axis O.

  The outer cylinder member 111 is disposed on the inner side of the upper part of the outer cylinder part 114 and the cylindrical outer cylinder part 114 having the upper end fitted to the connection pipe part 67 of the cylinder 42. And a cylindrical lower tube portion 117 that extends downward from the partition wall portion 115 and is fitted on the upper end portion of the inner tube member 112. The partition wall 115 is formed with a liquid passage hole 119 penetrating in the vertical direction.

  A part of the outer peripheral surface at the upper end portion of the lower cylindrical portion 117 is connected to the inner peripheral surface of the outer cylindrical portion 114, and a radial gap is formed between the other portion and the inner peripheral surface of the outer cylindrical portion 114. Is provided. The outer cylindrical member 111 is formed with an inverted introduction hole 121 that penetrates the part of the upper end portion of the lower cylindrical portion 117 and the outer cylindrical portion 114 in the radial direction. The contents in the container body 2 are introduced into the introductory hole 121 when the dispenser 1 is inverted.

The inner cylinder member 112 has a cylindrical upper cylinder part 122 whose upper end is connected to the lower cylinder part 117, and is disposed below the upper cylinder part 122, and a lower part projects downward from the outer cylinder member 111. A cylindrical lower cylindrical portion 123 and a cylindrical coupling cylindrical portion 124 that couples the upper cylindrical portion 122 and the lower cylindrical portion 123 are provided.
The upper end portion of the upper cylinder portion 122 is externally fitted to the lower cylinder portion 117. Between the outer peripheral surface of the upper cylinder part 122 and the inner peripheral surface of the outer cylinder part 114, the 1st flow path R1 which distribute | circulates the content is formed. The first flow path R1 communicates with the liquid passage hole 119.

The lower end portion of the upper cylindrical portion 122 has a tapered shape that gradually decreases in diameter as the inner diameter and outer diameter decrease downward. A spherical switching valve 125 is disposed inside the upper cylindrical portion 122.
Between the outer peripheral surface of the coupling cylinder part 124 and the inner peripheral surface of the outer cylinder part 114, the 2nd flow path R2 which distribute | circulates the content is formed. The second flow path R2 communicates with the first flow path R1. For example, a plurality of communication holes 126 are formed in the coupling cylinder portion 124 so as to communicate the inside thereof with the second flow path R2.
The communication hole 126, the second flow path R 2, the first flow path R 1, and the liquid flow hole 119 are an upright introduction hole 129 and an inverted introduction hole 121 at the lower end of the inner cylindrical member 112, and a lower end opening (connection pipe portion) of the cylinder 42. 67, a lower end opening portion 67).

The lower cylindrical portion 123 is fitted in the lower end portion of the outer cylindrical member 111. The upper end portion of the lower cylindrical portion 123 has a tapered shape that gradually decreases in diameter as the inner diameter and the outer diameter increase upward. A spherical lower valve body 127 is disposed inside the lower cylinder portion 123.
A plurality of second vertical rib portions 128 projecting inward in the radial direction and extending in the vertical direction are formed on the inner peripheral surface of the lower cylindrical portion 123. The plurality of second vertical rib portions 128 restricts the downward movement of the lower valve body 127 from the second vertical rib portion 128.

  The upper end portion of the pipe 113 is fitted in the lower end portion of the lower cylindrical portion 123. The lower end opening of the pipe 113 forms a lower end opening 113 </ b> A that opens toward the bottom in the container body 2. The lower end opening 113 </ b> A and the upright introduction hole 129 are arranged below the inverted introduction hole 121. The contents are introduced into the upright introduction hole 129 through the pipe 113.

Next, the operation of the discharger 1 will be described.
With reference to FIGS. 1 and 3, when using the discharger 1, first, it is confirmed whether or not the discharge is locked by the discharge regulating member 75. When the discharge is locked, the lock lever 76 is operated to retract the discharge regulating member 75 from the lock position to the unlock position, and the discharge lock is released.

Next, the ejector 1 is grasped including the pressing member 16, and the front plate portion 91 of the pressing member 16 is pulled rearward so that the pressing member 16 is rotated around the rotation axis C <b> 1 against the urging force of the extending body 95. Rotate downward.
When the pressing member 16 is rotated downward, the extending body 95 is elastically deformed so that the other end portion 95B is pushed downward by the top plate portion 90. Thereby, the operation reaction force of the pressing member 16 is generated, and the restoring force to the initial state before the operation is increased.

  As the pressing member 16 rotates, the top panel 90 pushes the top of the discharge head 13 downward through the recess 90A and the pressed protrusion 30A, and moves the discharge head 13 downward. At this time, when the stem 12 moves downward, the thin valve body 99 of the on-off valve 97 is dragged toward the outer peripheral surface of the stem 12 and elastically deforms so as to be turned downward. Then, the external air introduction path S1 and the upper space K1 in the cylinder 42 communicate with each other by the gap forming portion 99A on the upper surface of the thin valve body 99, and the external air can be introduced into the upper space K1 through the external air introduction hole 63A. For this reason, the downward movement of the piston 41 becomes smooth, and the discharge operation force of the contents is reduced.

  A piston guide 43 is inserted and held in the stem 12, and an elastic portion 25 that contacts the piston 41 is provided at the lower end portion of the stem 12. Thereby, when the discharge head 13 is pushed down, the piston guide 43 and the piston 41 are integrally lowered with respect to the cylinder 42. The piston 41 descends in a state where the communication hole 43C of the piston guide 43 is closed and the communication between the communication hole 43C and the inside of the cylinder 42 is blocked. Since the lower end of the cylinder 42 is closed by the valve body 44, the inside of the cylinder 42 is pressurized by the lowering of the piston 41.

  When the internal pressure of the cylinder 42 increases to a predetermined pressure, the downward movement of the piston 41 is suppressed due to the increased internal pressure. When the discharge head 13 is further pushed down in this state, the elastic portion 25 of the stem 12 is deformed so that the lower end portion is slid radially inward along the receiving surface 51A of the piston 41, and the length in the vertical direction is changed. To shorten. The discharge head 13 and the piston guide 43 start to move downward relative to the piston 41 by this shortening.

  When the piston guide 43 moves downward with respect to the piston 41, the lower end of the closing portion 52 of the piston 41 is separated from the contact portion 43E of the piston guide 43. Thus, a gap is formed between the lower end portion of the closing portion 52 and the outer peripheral surface of the piston guide 43, and the communication hole 43C communicates with the inside of the cylinder 42 through this gap.

  As a result, the contents in the cylinder 42 flow into the flow path 43F in the piston guide 43 through the gap between the inner peripheral surface of the closing portion 52 and the outer peripheral surface of the piston guide 43 and the communication hole 43C. The contents flowing into the piston guide 43 reach the nozzle cylinder portion 32 via the mounting cylinder portion 31 of the discharge head 13 and are discharged to the outside from the discharge hole 13A of the nozzle cylinder portion 32.

  In the discharge operation of the contents, the extension body 95 is elastically deformed with the downward rotation of the pressing member 16 and stores an elastic force (spring force). For this reason, when the operation of rotating the pressing member 16 (operation of pressing the discharge head 13) is stopped after the contents are discharged, the extending body 95 is restored and deformed by the elastic force, and the pressing member 16 is rotated around the rotation axis C1. It reverses upward and returns to the initial position before the operation.

  At this time, discharge is performed in conjunction with the upward rotation of the pressing member 16 by the engagement between the shaft hole 92B for the head formed in the side plate portion 92 of the pressing member 16 and the shaft body 13B formed in the discharging head 13. The head 13 moves upward. As a result, the pressing member 16 returns to the initial position, and the ejection head 13 is restored and moved upward. That is, the elastic force of the extending body 95 can be used to bias the discharge head 13 upward, and the discharge head 13 can be returned to the initial position before being lowered. As a result, the pressing member 16 and the ejection head 13 can be quickly returned to their original positions to prepare for the next ejection.

  When the discharge head 13 and the piston guide 43 are raised, the inside of the cylinder 42 is depressurized, and the valve body 44 is lifted to open the lower end portion of the cylinder 42. As a result, the contents in the container body 2 flow into the cylinder 42 through the adapter for both right and left sides 101.

In the forward / inverted dual-use adapter 101, the negative pressure due to the reduced pressure in the cylinder 42 acts on the switching valve 125 and the lower valve body 127 through the communication passage R.
When the discharger 1 is upright, the state in which the switching valve 125 blocks the communication between the introductory introduction hole 121 and the communication path R is maintained, and the lower valve body 127 is separated from the second vertical rib portion 128. As a result, the contents in the container main body 2 reach the lower end portion of the cylinder 42 through the upright introduction hole 129, the main body cylinder portion 110, and the communication path R, and flow into the cylinder 42.

  On the other hand, when the dispenser 1 is inverted, the upright introduction hole 129 that opens to the bottom of the container main body 2 protrudes from the liquid level of the contents in the container main body 2, and the inverted introduction hole 121 is in the container main body 2. It will be in the state located in the contents. At this time, the switching valve 125 is separated from the inner side of the upper cylindrical portion 122 based on its own weight, and the introductory introduction hole 121 and the communication passage R communicate with each other through the main body cylindrical portion 110. In this state, when a negative pressure is generated in the cylinder 42, the contents in the container body 2 reach the lower end of the cylinder 42 through the inverted introduction hole 121, the body cylinder portion 110, and the communication path R, and the cylinder 42. Flows in.

Here, the principal part of the manufacturing method of the discharger 1 is demonstrated.
In the configuration in which the support portion 15 protrudes from the rear portion of the pump 14 as in this embodiment, when the mounting cap 11 and the pump 14 are assembled to the container body 2, the mounting cap 11 is mounted on the pump 14 from above. Instead, the mounting cap 11 is mounted on the pump 14 from below, that is, the pump 14 is mounted on the mounting cap 11 from above.

  First, as a first step, the guide tube portion 45 is pushed into the mounting cap 11 from above the mounting cap 11, and the lower flange portion 74 </ b> B is moved downward from above the pressing plate portion 23. The presser plate portion 23 has an inner diameter 23r that is smaller than the outer diameter 74r of the lower flange portion 74B. Therefore, when the lower flange portion 74B is moved downward from the upper side of the presser plate portion 23, the lower flange portion 74B and the presser foot While at least one of the plate portions 23 is elastically deformed, the lower flange portion 74B gets over the presser plate portion 23 and reaches below. At this time, since the lower flange portion 74B has a relatively small diameter, the lower flange portion 74B easily climbs over the presser plate portion 23 and reaches the lower portion thereof.

  Next, as a second step, an assembly in which the stem 12, the piston 41 and the cylinder 42 are assembled is inserted into the mounting cap 11 from below, and the upper end of the cylinder 42 is inserted into the outer cylinder 71 of the guide cylinder 45. At the same time, the lower flange portion 74B is sandwiched between the presser plate portion 23 and the support plate portion 61A in the vertical direction.

In order to assemble the assembly after the second step to the container body 2, the mounting cap 11 of the assembly is screwed to the mouth 3, so that the upper end opening edge of the mouth 3 and the lower end opening edge of the presser plate portion 23 The lower flange portion 74B, the support plate portion 61A, and the packing 66 are sandwiched between each other.
The lower end opening edge of the presser plate portion 23 is provided so as to overlap with the upper end opening edge of the mouth portion 3 when viewed from the axial direction, and the pressing force acting downward (tightening direction) from the presser plate portion 23 is the mouth portion. 3 is favorably supported by the upper opening edge. Thereby, the lower flange portion 74B and the like can be firmly sandwiched between the upper end opening edge of the mouth portion 3 and the lower end opening edge of the presser plate portion 23.

As described above, according to the discharge device 1 in the above embodiment, when the discharge head 13, the stem 12, and the piston 41 are pressed down integrally with the cylinder 42, the position within the cylinder 42 is lower than the piston 41. The lower space K2 is pressurized, and the content in the lower space K2 rises in the stem 12 and is discharged from the discharge hole 13A. In this process, the thin valve body 99 of the on-off valve 97 allows the outside air introduction path S1 and the upper space K1 in the cylinder 42 to communicate with each other when the stem 12 or the like is pressed, so that the air passing through the outside air introduction path S1 is It is introduced into the upper space K1 in the cylinder.
Next, when the pressing of the discharge head 13, the stem 12 and the piston 41 is released and these are restored and displaced upward, the lower space K2 in the cylinder 42 becomes negative pressure, and the contents in the container body 2 are changed to the cylinder. It is introduced into the lower space K2 in 42. In this process, even if the thin valve body 99 blocks the communication between the outside air introduction path S1 and the upper space K1 in the cylinder 42, the outside air introduction hole 63A is opened because the piston 41 is lowered, so that the cylinder Air in the upper space K <b> 1 in 42 can flow into the container body 2. Thereby, generation | occurrence | production of the resistance by air being compressed by the upper space K1 in the cylinder 42 at the time of piston 41 raising is suppressed, and generation | occurrence | production of the negative pressure in the container main body 2 is also suppressed.
Since the flow of air inside and outside the pump 14 is performed by the operation of the thin valve body 99, the air can be circulated even with a small input or pressure difference, and the operability of the on-off valve 97 can be improved.
And even if the discharge container in which the discharge device 1 is mounted on the container body 2 falls down, the thin valve body 99 of the on-off valve 97 blocks the communication between the outside air introduction path S1 and the upper space K1 in the cylinder 42. Thus, even if the contents in the container body 2 reach the upper space K1 in the cylinder 42, the contents can be prevented from leaking outside through the outside air introduction path S1.
Further, the on-off valve 97 has a thick cylindrical portion 98 formed thicker than the thin valve body 99, and the thick cylindrical portion 98 is fitted in the fitting recess 72B of the guide cylindrical portion 45. The fitting portion of the on-off valve 97 is difficult to be unintentionally deformed when assembled to the guide cylinder portion 45, and the setability of the on-off valve 97 is improved, and the fitting force is secured to prevent the on-off valve 97 from falling off. Can do.

  Further, the discharge device 1 has an uneven gap forming portion 99A formed on the inner peripheral edge portion on the upper surface of the thin valve body 99, and the stem 12 is fitted in the thin valve body 99 so as to be slidable up and down. Therefore, when the stem 12 is positioned below the rising end position, the thin valve body 99 is elastically deformed so as to be turned downward, and is formed between the stem 12 by the gap forming portion 99A. It is possible to allow communication between the outside air introduction path S1 and the upper space K1 in the cylinder 42 through the gap.

  Further, in the discharge device 1, the on-off valve 97 includes the thin valve body 99 at the center in the vertical direction of the thick tube portion 98, and the thin valve body 99 has the gap forming portion 99A on the upper and lower surfaces. Thus, when the on-off valve 97 is assembled to the guide tube portion 45, it is not necessary to confirm the vertical direction of the on-off valve 97, and the on-off valve 97 can be easily assembled.

  Further, in the discharge device 1, an annular groove 98D that is recessed toward the outside in the radial direction is formed over the entire circumference at a connection portion with the thin valve body 99 on the inner peripheral surface of the thick tube portion 98. Therefore, it is possible to secure both the radial length L1 of the thin valve body 99 and the radial thickness H1 at the opening end 99A of the thick cylindrical portion 98, and the operability of the on-off valve 97 and Setability can be improved.

The present invention is not limited to the above-described embodiment. For example, the thin valve element 99 is not limited to the configuration in which the inner peripheral edge is a seal surface 99S that is in close contact with the outer peripheral surface of the stem 12, but the inner peripheral edge Is separated from the outer peripheral surface of the stem 12, and the thin valve body 99 itself is sandwiched between the step surface 12BS of the stem 12 and the lower end surface of the annular protrusion 72A, so that the outside air introduction path S1 and the upper space in the cylinder 42 are The structure which interrupts | blocks communication with K1 may be sufficient.
Further, the dispenser to which the present invention is applied is not limited to the upright and upright dispenser 1, but may be the upright exclusive dispenser 1. At this time, a tube or the like that circulates the contents in the container body 2 may be attached to the connecting pipe portion 67 without using the adapter for both ends upright and inverted.
Further, the present invention is not limited to the ejector 1 that uses the trigger-like pressing member 16, and may be applied to an ejector that directly presses the head main body 30 to eject the contents. In this case, it is possible that the mounting cap 11 can be mounted from above the pump if there is no overhanging like the support portion 15.
The configuration in the above embodiment is an example of the present invention, and various modifications can be made without departing from the gist of the present invention, such as replacing the component of the embodiment with a known component.

DESCRIPTION OF SYMBOLS 1 Discharger 2 Container main body 3 Mouth part 11 Mounting cap 12 Stem 13 Discharge head 13A Discharge hole 14 Pump 41 Piston 42 Cylinder 45 Guide cylinder part 63 Peripheral wall part 63A Outside air introduction hole 72B Fitting recessed part 97 On-off valve 98 Thick cylinder part 98D Annular groove 99 Thin valve body 99A Gap forming part K1 Upper space S1 Outside air introduction path

Claims (4)

A stem that is disposed in an upwardly biased state at the mouth of the container main body in which the contents are accommodated, and a discharge head that is attached to the upper end of the stem and has a discharge hole for the contents; A pump having
A mounting cap for mounting the pump on the mouth of the container body,
A discharger that moves the stem and the discharge head downward to discharge the contents from the discharge hole;
The pump includes a guide tube portion that surrounds the stem from the outside in the radial direction;
A piston linked to the vertical movement of the stem;
A cylinder in which the piston is disposed slidably up and down;
The peripheral wall portion of the cylinder is formed with an outside air introduction hole that is releasably closed by the piston,
Between the outer peripheral surface of the stem and the inner peripheral surface of the guide tube portion, an outside air introduction path is formed which can communicate with an upper space located above the piston in the cylinder,
The guide tube portion is fitted with an open / close valve capable of blocking communication between the outside air introduction path and the upper space in the cylinder,
The on-off valve is fitted into a fitting recess formed in the guide cylinder part, and a lower end opening edge is in contact with an upper end opening edge of the cylinder, and a diameter from the thick cylinder part And a thin valve body that protrudes inward in the direction and that can block communication between the outside air introduction path and the upper space in the cylinder.   The concave and convex gap forming portion is formed on the inner peripheral edge of the upper surface of the thin valve body, and the stem is fitted in the thin valve body so as to be slidable in the vertical direction. Discharger.   The said on-off valve is provided with the said thin valve body in the center of the up-down direction of the said thick-walled cylinder part, The said thin-walled valve body has the said gap | interval formation part formed in the up-and-down surface. The dispenser described.   An annular groove that is recessed toward the outside in the radial direction is formed over the entire circumference in a connection portion between the inner wall surface of the thick tube portion and the thin valve body. 4. The dispenser according to any one of 3.

Images