JP6438856B2 - Dispenser - Google Patents

Description

  The present invention relates to a dispenser.

As this type of discharger, there are a stem disposed in an upwardly biased state so as to be movable downward, a discharge head mounted on the upper end of the stem and having a discharge hole for contents, and a tubular shape interlocking with the stem. A piston in which the piston is slidable vertically, and a bottomed cylindrical piston guide that extends downward from the stem and penetrates the inside of the piston in the vertical direction. When the guide is moved downward with respect to the cylinder, the one in which the contents in the cylinder are discharged from the discharge hole through the stem has been proposed (for example, see Patent Document 1).
In such a discharger, the stem and the piston guide first move together with the piston to increase the internal pressure of the cylinder, and then the stem and the piston guide move downward with respect to the piston, and the contents in the cylinder are moved to the piston guide. Between the outer peripheral surface of the piston and the inner peripheral surface of the piston and through the stem, into the discharge head, and discharged from the discharge hole.

JP 2008-030798 A

  However, in such a discharger, the piston may move relatively higher than the stem and the piston guide before the internal pressure in the cylinder sufficiently increases, and the contents may be discharged. For this reason, the amount and momentum of the discharged contents may vary. Further, there is room for improvement in stabilizing the vertical movement of the stem and piston guide in the cylinder.

  The present invention has been made in view of the above-mentioned problems, and provides a discharge device that stabilizes the discharge mode such as the amount and momentum of discharged contents and stabilizes the vertical movement of the stem and piston guide in the cylinder. The purpose is to do.

  The present invention employs the following means in order to solve the above problems. That is, the discharge device according to the present invention includes a stem that is movably moved downward in an upward biased state, a discharge head that is attached to the upper end of the stem and has a discharge hole for contents, and is linked to the stem. A cylindrical piston, a cylinder in which the piston is slidably accommodated, and a piston guide that extends downward from the stem and penetrates the inside of the piston in the vertical direction. And when the piston guide is moved downward relative to the cylinder, the contents in the cylinder are discharged from the discharge hole through the stem, and the piston is moved to the piston guide. A closed portion that is slidably fitted up and down and that blocks communication between the stem and the cylinder, the closed portion being the piston guide for the piston; During the downward movement, the inside of the stem and the inside of the cylinder are communicated, and the piston and the stem move vertically between the stem and the piston as the stem and the piston guide move downward with respect to the piston. An elastic member that is compressed and deformed in a direction is disposed, and a guide protrusion that is in contact with or close to the inner peripheral surface of the cylinder is formed on the stem.

In this invention, since the elastic member is disposed between the stem and the piston, when the stem is pushed down, first, the piston guide and the piston are moved integrally with the stem and moved downward with respect to the cylinder. As a result, the inside of the cylinder is pressurized in a state where the closed portion of the piston keeps the communication between the inside of the stem and the inside of the cylinder. When the discharge head is further pushed down in this state, the downward movement of the piston is suppressed by the increased internal pressure of the cylinder. Therefore, the stem and the piston guide move downward with respect to the piston while compressing and deforming the elastic member between the stem and the piston. Thereby, the inside of the stem and the inside of the cylinder are communicated, and the contents in the cylinder are discharged from the discharge hole through the inside of the stem.
In this way, the stem, piston guide and piston move together downward with respect to the cylinder, and after raising the internal pressure of the cylinder to some extent, the elastic member compresses and deforms to release the inside of the stem from the cylinder. The discharge mode such as the amount and momentum of the discharged contents can be stabilized.
Further, since the stem moves up and down in the cylinder in a state where the guide protruding portion of the stem is in contact with or close to the inner peripheral surface of the cylinder, wobbling of the stem with respect to the cylinder can be suppressed. In particular, when the elastic member is compressed and deformed between the stem and the piston, that is, when a large pressing force is applied to the stem, it is possible to effectively suppress the stem from wobbling with respect to the cylinder.

In the discharge device according to the present invention, the elastic member has a cylindrical shape extending downward from the guide protrusion, and the piston has a radial direction orthogonal to the central axis of the piston. A receiving surface may be formed that inclines downward from the outside toward the inside and contacts the lower end of the elastic member.
In this case, wobbling of the stem with respect to the cylinder can be suppressed by the elastic member in addition to the guide protrusion. The elastic member is compressed and deformed by contracting the length in the vertical direction while the lower end portion (free end portion) of the elastic member is guided inward along the receiving surface of the piston.

In the dispenser of the present invention, the stem and the elastic member may be integrally formed.
In this case, by integrating the stem and the elastic member, the number of parts can be reduced and the manufacturing process can be prevented from becoming complicated, and the manufacturing cost of the discharger can be reduced.

  According to the dispenser according to the present invention, it is possible to stabilize the discharge mode such as the amount of content to be discharged and the momentum, and to stabilize the vertical movement of the stem and the piston guide in the cylinder.

It is an axial sectional view showing a discharger concerning one embodiment of the present invention. It is the elements on larger scale which show the discharge device of FIG. It is a partial expansion perspective view which shows the lower end part of the stem of FIG. It is an axial sectional view showing the discharge state of the discharger of FIG. It is the elements on larger scale which show the discharge device of FIG. It is the elements on larger scale of the axial direction sectional view which shows the other discharger which can apply this invention. It is the elements on larger scale which show the discharge state of the discharge device of FIG.

  Hereinafter, an embodiment of a discharger according to 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 according to the present embodiment is provided with a top cylindrical mounting cap 11 attached to the mouth portion 3 of the container body 2, and is movably moved downward in an upward biased state. A cylindrical stem 12, a discharge head 13 attached to the upper end portion of the stem 12 and having a discharge hole 13A for contents formed therein, a pump 14 that is operated when the stem 12 is pushed down, and the stem 12 from the outside An encircling cylindrical guide tube 15 and a trigger 16 for pushing down the discharge head 13 are provided.

  Here, the mounting cap 11, the stem 12, and the guide cylinder 15 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. Further, 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 in which the discharge holes 13A of the discharge head 13 are directed is the front, the reverse direction is the rear, and the direction perpendicular to the vertical direction and the front-rear direction is the left-right direction.

The mounting cap 11 includes a circular top wall portion 21 in a plan view in which an opening is formed at the center, and a cylindrical peripheral wall portion 22 extending downward from the outer peripheral edge of the top wall portion 21. Have. The top wall portion 21 and the peripheral wall portion 22 are disposed coaxially with the central axis O.
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 stem 12 is inserted into the guide tube 15 so as to be movable up and down. The upper portion of the stem 12 protrudes upward from the guide tube 15, and the lower portion of the stem 12 is lower than the guide tube 15. It protrudes downward. The inner diameter and outer diameter of the lower end portion of the stem 12 are larger than the inner diameter and outer diameter of the upper end portion and the vertical middle portion of the stem 12, and in the transition portion 12A from the vertical middle portion to the lower end portion of the stem 12, the stem 12 The inner diameter and the outer diameter of the are gradually increased toward the lower side. Further, on the inner peripheral surface of the center portion of the stem 12 in the vertical direction, an engagement protrusion 12B that protrudes inward in the radial direction is formed over the entire circumference.

Furthermore, as shown in FIGS. 1 to 3, a guide protrusion 12 </ b> C that protrudes outward in the radial direction is formed at the lower end of the stem 12 over the entire circumference. A cylindrical elastic member 25 extends downward from the outer peripheral edge of the guide protrusion 12C.
As shown in FIG. 3, the elastic member 25 is formed with a plurality of elastic member cutouts 25 </ b> A extending in the vertical direction at intervals in the circumferential direction. Moreover, as shown in FIG.1 and FIG.2, the lower end opening edge of the elastic member 25 inclines so that it may face below as it goes inside from a radial direction outer side.

As shown in FIG. 1, the discharge head 13 includes a cylindrical mounting cylinder portion 31 attached to the upper end portion of the stem 12, and a cylindrical shape projecting forward from the front surface of the mounting cylinder portion 31. Nozzle cylinder portion 32.
At the upper end of the mounting cylinder 31, columnar pressed protrusions 33 are provided separately in both the left and right directions.
A core rod body 35 extending in the front-rear direction and a crested cylindrical tip 36 attached to the front end portion of the core rod body 35 are disposed in the nozzle cylinder portion 32.
On the outer peripheral surface of the core rod body 35, a plurality of flow channel grooves 35A that allow the contents to flow between the inner peripheral surface of the nozzle cylinder portion 32 are formed in the front-rear direction.

The tip 36 is disposed coaxially with the core rod body 35, and has a cylindrical tip cylinder portion 37 provided on the outer peripheral surface of the core rod body 35 and an end provided at the tip portion of the tip cylinder portion 37. And a wall portion 38.
The tip cylinder part 37 is fitted in the nozzle cylinder part 32, and the end wall part 38 is in contact with the tip surface of the core bar body 35. A spin channel 38 </ b> A that communicates 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 that is in contact with the tip surface of the core rod body 35. Further, a discharge hole 13A communicating with the spin channel 38A is formed in the central portion of the end wall portion 38.

  The pump 14 is for supplying the contents accommodated in the container body 2 to the discharge head 13, and is mounted inside the mounting cap 11. As shown in FIGS. 1 and 2, the schematic configuration of the pump 14 includes a double cylindrical piston 41 interlocked with the stem 12, and a cylindrical cylinder 42 in which the piston 41 is slidably accommodated. And a bottomed cylindrical piston guide 43 that extends downward from the stem 12 and penetrates the inside of the piston 41 in the vertical direction, and a spherical valve body 44 disposed in the cylinder 42.

The piston 41 includes a cylindrical sliding portion 51, a cylindrical blocking portion 52 disposed radially inward of the sliding portion 51, an upper end of the sliding portion 51, and an intermediate portion in the vertical direction of the blocking portion 52. And an annular connecting portion 53 that is annular in a plan view. The sliding part 51, the closing part 52 and the annular connecting part 53 are arranged coaxially with the central axis O.
The lower end 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, and the lower end of the sliding portion 51 is in sliding contact with the inner peripheral surface of the cylinder 42. Yes.
The lower end portion of the closing portion 52 is curved so as to gradually warp inward in the radial direction from the upper side to the lower side, and abuts against a contact portion 43E formed in the vicinity of a bottom portion 43A described later of the piston guide 43. It touches. Further, the upper end portion of the closing portion 52 is curved so as to gradually warp outward in the radial direction from the lower side to the upper side, and is in sliding contact with the inner peripheral surface of the lower end portion of the stem 12.
The upper surface of the annular connecting portion 53 is inclined so as to gradually go downward as it goes from the radially outer side to the inner side, and serves as a receiving surface 53 </ b> A that receives the lower end opening edge of the elastic member 25.

  The cylinder 42 has an annular top wall portion 61 in a plan view, a cylindrical rising cylinder portion 62 extending upward from the top wall portion 61, and downward from an opening edge of the top wall portion 61. A cylindrical upper tube portion 63 extending toward the bottom, a cylindrical middle tube portion 64 extending downward from the lower end of the upper tube portion 63, and a downward direction from the lower end of the middle tube portion 64. An extended cylindrical lower tube portion 65. The top wall portion 61, the rising cylindrical portion 62, the middle cylindrical portion 64, and the lower cylindrical portion 65 are disposed coaxially with the central axis O.

The outer peripheral edge portion of the top wall portion 61 is sandwiched between the top wall portion 21 of the mounting cap 11 and the upper end opening edge of the mouth portion 3 of the container body 2 in the vertical direction. A first packing 66 is interposed between the outer peripheral edge portion of the top wall portion 61 and the upper end opening edge of the mouth portion 3.
The rising cylinder portion 62 is erected upward through the opening of the top wall portion 21.
An air hole 63 </ b> A that connects the inside and outside of the upper cylinder portion 63 is formed at the upper end portion of the upper cylinder portion 63. The air hole 63 </ b> A is blocked by the outer peripheral surface of the annular coupling portion 53. Further, the guide protrusion 12 </ b> C of the stem 12 is in contact with or close to the inner peripheral surface of the upper tube portion 63.

The middle tube portion 64 extends downward from the opening edge of the upper tube portion 63, and has a straight tube portion (guide hole portion) 67 whose inner diameter and outer diameter are constant in the vertical direction, and a lower end of the straight tube portion 67. And a taper cylinder portion 68 that extends downward from the top and that decreases in diameter as the inner diameter and the outer diameter decrease from the top to the bottom.
On the inner peripheral surface of the straight tube portion 67, a plurality of vertical rib portions 67A extending in the vertical direction and projecting radially inward are disposed at intervals in the circumferential direction. Further, a bottom portion (lower end portion) 43A, which will be described later, of the piston guide 43 can enter the straight tube portion 67.
The valve body 44 is detachably disposed on the tapered surface of the tapered cylinder portion 68 inside the tapered cylinder portion 68. Further, on the inner peripheral surface of the tapered tube portion 68, a restricting protrusion 68A that inclines upward as it goes from the radially outer side to the inner side protrudes. The inner diameter of the upper end of the restricting protrusion 68A is smaller than that of the valve body 44. Further, a gap that interrupts the circumferential extension is formed in the restricting protrusion 68A.
A tube 69 through which the contents in the container main body 2 flow is fitted inside the lower cylinder portion 65.

The bottom portion 43 </ b> A of the piston guide 43 is formed in a hemispherical shape that bulges downward and radially outward with respect to the peripheral cylindrical portion located above the bottom portion 43 </ b> A. It is possible to enter the circumference. In addition, a contact portion 43E that gradually decreases in diameter as the outer diameter increases upward from the upper surface of the bottom portion 43A is formed at the lower end portion of the peripheral cylindrical portion of the piston guide 43.
A pair of communication holes 43 </ b> B that allow the piston guide 43 and the cylinder 42 to communicate with each other are formed at the lower end of the piston guide 43. The communication holes 43B are formed on both sides sandwiching the central axis O in the radial direction. The communication hole 43 </ b> B is located above the lower end of the closing part 52, and communication with the inside of the upper cylinder part 63 of the cylinder 42 is blocked.
Similarly, a pair of through-holes 43 </ b> C that allow the piston guide 43 and the cylinder 42 to communicate with each other are formed at the upper end of the piston guide 43. The through holes 43C are formed on both sides of the central axis O in the radial direction, similarly to the communication holes 43B. The through hole 43C is located in the transition portion 12A of the stem 12 in the vertical direction.
In addition, an engagement groove 43D that engages with the engagement protrusion 12B of the stem 12 is formed over the entire circumference of the portion of the piston guide 43 that is positioned above the through hole 43C. As a result, the piston guide 43 moves up and down together with the stem 12.

  The guide tube 15 is disposed on the radially outer side of the cylindrical outer tube portion 71, the cylindrical intermediate tube portion 72 disposed on the radially inner side of the outer tube portion 71, and the intermediate tube portion 72. A cylindrical inner cylinder portion 73 and a trigger support portion 74 that supports the trigger 16. The outer cylinder part 71, the intermediate cylinder part 72 and the inner cylinder part 73 are arranged coaxially with the central axis O.

The outer cylinder portion 71 is externally fitted to the rising cylinder portion 62.
An intermediate portion in the vertical direction of the intermediate tube portion 72 is connected to the upper end of the outer tube portion 71, and an upper portion of the intermediate tube portion 72 projects upward from the outer tube portion 71. A guide notch 72A is formed in the front portion of the upper end of the intermediate cylinder 72 so as not to hinder the swing of the trigger 16.
The lower end of the inner cylinder part 73 is connected to the lower end of the intermediate cylinder part 72. Between the upper end of the inner cylinder part 73 and the nozzle cylinder part 32 of the discharge head 13, a coil spring 75 that urges the stem 12 and the discharge head 13 upward is disposed. A plurality of connecting rib portions 73 </ b> A extending in the vertical direction and connected to the inner peripheral surface of the intermediate cylindrical portion 72 are formed on the outer peripheral surface of the inner cylindrical portion 73 at intervals in the circumferential direction. Further, a second packing 76 is interposed between the lower end of the inner cylinder portion 73 and the top wall portion 61.

The trigger support portion 74 protrudes rearward from the upper portion of the intermediate tube portion 72 and the outer tube portion 71, and includes a pair of side wall portions 77 arranged at intervals in the left-right direction, and the side wall portions 77. And a rear wall portion 78 formed at the rear end.
The side wall portion 77 has a rear portion that rises upward with respect to the front portion, and a column-shaped swing shaft 77A that extends outward in the left-right direction protrudes from the outer surface of the rear portion. ing.

The trigger 16 is attached to the trigger support portion 74 via a swing shaft 77A, and is provided so as to be swingable around the swing shaft 77A.
The trigger 16 includes a top plate portion 81, a rear plate portion 82 extending obliquely downward from the rear end edge of the top plate portion 81, and obliquely downward from the front end edge of the top plate portion 81 toward the front. It has a front plate portion 83 that extends, and a pair of side plate portions 84 that are individually suspended from the side edge of the left and right sides of the top plate portion 81.

A long hole portion 83A extending in the vertical direction is formed in the upper portion of the front plate portion 83, and the nozzle cylinder portion 32 of the ejection head 13 is inserted into the long hole portion 83A. Further, the lower part of the front plate 83 is a finger hooking part for placing a finger or the like.
On the inner side surface of the side plate portion 84, a pressing portion 85 for pressing down the ejection head 13 is provided. The pressing portion 85 is a pair of plate-like members that sandwich the mounting cylinder portion 31 from both the left and right sides, and an arc-like shape in which the pressed protrusion 33 is slidably fitted around its axis at the lower end of the pressing portion 85. A push-out notch 85A is formed. In addition, a shaft hole portion 84A is formed in the rear portion of the side plate portion 84, and the swing shaft 77A is slidably inserted in the circumferential direction.
A stopper 86 that prevents unnecessary operation of the trigger 16 is disposed between the side plate portion 84 and the upper end edge of the front side portion of the side wall portion 77 of the trigger support portion 74.

Next, a method of using the discharge device 1 having the above configuration will be described.
First, after removing the stopper 86, a finger or the like is hooked on the finger hook portion of the front plate portion 83 of the trigger 16, and the trigger 16 is pulled backward to swing. As the trigger 16 swings, the pressing portion 85 presses the pressed protrusion 33 of the nozzle cylinder portion 32 downward, and pushes down the stem 12. Here, a piston guide 43 is attached to the stem 12, and the elastic member 25 provided on the stem 12 is in contact with the piston 41. As a result, the stem 12, the piston guide 43 and the piston 41 are integrally lowered with respect to the cylinder 42. Therefore, the inside of the upper cylinder portion 63 of the cylinder 42 is pressurized while the closing portion 52 of the piston 41 keeps the communication hole 43B of the piston guide 43 closed.

  If the stem 12 and the piston guide 43 are further pushed down while the internal pressure of the upper cylinder portion 63 of the cylinder 42 has increased to a predetermined pressure, the downward movement of the piston 41 is suppressed due to the increased internal pressure of the upper cylinder portion 63. The As a result, the elastic member 25 is slid so that the free end thereof warps radially inward along the receiving surface 53A of the piston 41, and the length of the elastic member 25 in the vertical direction is shortened. Thus, the stem 12 and the piston guide 43 start to move downward with respect to the piston 41. Further, the bottom portion 43A of the piston guide 43 enters the straight tube portion 67 of the middle tube portion 64 and descends while approaching or sliding on the vertical rib portion 67A.

  When the stem 12 and the piston guide 43 are moved downward relative 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 43B is opened to the inside of the upper cylinder portion 63 of the cylinder 42 through this gap. . The internal pressure of the upper cylinder portion 63 further increases until the communication hole 43B is opened with respect to the inside of the upper cylinder portion 63 of the cylinder 42.

As a result, the content in the upper cylinder portion 63 flows into 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 43B. Further, the contents in the upper cylindrical portion 63 are the gap between the inner peripheral surface of the closing portion 52 and the outer peripheral surface of the piston guide 43, the lower portion of the stem 12, the inner peripheral surface of the transition portion 12A, and the piston guide 43. It flows into the piston guide 43 through the gap between the outer peripheral surface of the piston rod 43 and the through hole 43C. The contents flowing into the piston guide 43 flow in the upper portion of the stem 12, reach the nozzle cylinder portion 32, and are discharged from the discharge hole 13 </ b> A of the nozzle cylinder portion 32.
In addition, due to the increased internal pressure of the upper cylinder part 63 and the contents filled in the upper cylinder part 63, the downward movement of the piston 41 includes the case where the contents are not filled in the upper cylinder part 63. In some cases, the upper position may be suppressed. In such a case, the communication hole 43B may be opened to the inside of the upper cylinder portion 63 of the cylinder 42 before the bottom portion 43A of the piston guide 43 enters the straight cylinder portion 67.

  Subsequently, when the finger or the like that pulled the trigger 16 is removed, the discharge head 13, the stem 12, and the piston guide 43 are lifted by the biasing force of the coil spring 75. Thereby, the inside of the upper cylinder portion 63 of the cylinder 42 is depressurized, the valve body 44 is lifted, the lower portion of the middle cylinder portion 64 is opened, and the contents in the container body 2 pass through the tube 69 and the middle cylinder portion 64. Flows into the upper cylindrical portion 63 through the vertical rib portions 67A and between the valve body 44 and the restricting protrusion 68A. Further, when the ejection head 13 is raised, the pressed protrusion 33 presses the pressing portion 85 upward, and the trigger 16 moves forward and returns to the original position shown in FIG.

When the discharger 1 is used for the first time, the contents in the upper cylindrical portion 63 of the cylinder 42, the stem 12, and the piston guide 43 are not filled. Therefore, it is necessary to fill the contents in the upper cylindrical portion 63, the stem 12 and the piston guide 43 of the cylinders 42.
For that purpose, the stopper 86 is removed, the trigger 16 is pulled backward, and the stem 12 is pushed down as described above. When the communication hole 43B is opened with respect to the inside of the upper cylinder portion 63 of the cylinder 42, the air filling the inside of the upper cylinder portion 63 is routed through the communication hole 43B and the through hole 43C as described above. Then, it flows into the piston guide 43. The air that has flowed into the piston guide 43 flows in the upper portion of the stem 12, reaches the nozzle cylinder portion 32, and is discharged from the discharge hole 13 </ b> A of the nozzle cylinder portion 32. Thereafter, when the finger or the like that pulled the trigger 16 is removed, the discharge head 13, the stem 12, and the piston guide 43 are lifted by the biasing force of the coil spring 75. As described above, the inside of the upper cylinder part 63 is depressurized, the valve body 44 floats and the lower part of the middle cylinder part 64 is opened, so that the contents in the container body 2 are supplied into the upper cylinder part 63. .
By repeating the pulling of the trigger 16 in this way, the contents are filled in the upper cylindrical portion 63 of the cylinder 42, the stem 12 and the piston guide 43.

According to the discharge device 1 configured as described above, the stem 12, the piston guide 43, and the piston 41 are integrally moved downward with respect to the cylinder until the internal pressure of the upper cylindrical portion 63 of the cylinder 42 rises to some extent. Since the closing portion 52 keeps the communication hole 43B closed, and then the elastic member 25 is compressed and deformed to open the communication hole 43B, the amount and momentum of the discharged contents can be stabilized.
Further, the stem 12 moves up and down in the cylinder 42 in a state where the guide protruding portion 12C of the stem 12 and the elastic member 25 are in contact with or close to the inner peripheral surface of the upper cylindrical portion 63 of the cylinder 42. Wobble can be suppressed. Further, since the bottom portion 43A of the piston guide 43 enters the straight tube portion 67, it is possible to more effectively suppress the stem 12 from wobbling with respect to the cylinder 42 when the elastic member 25 is compressed and deformed. Thereby, the discharge mode can be further stabilized.
Furthermore, since the stem 12 and the elastic member 25 are integrally formed, the number of parts can be reduced, the manufacturing process can be simplified, and the manufacturing cost of the dispenser 1 can be reduced.

In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, the elastic member is formed as an elastic member 25 extending downward from the outer peripheral edge of the guide protrusion 12C provided at the lower end of the stem 12, but for example, as shown in FIG. As shown, it may be formed as an elastic member 101 extending downward from the inner peripheral edge of the guide protrusion 12C. At this time, the lower surface of the elastic member 101 is inclined so as to face downward as it goes from the radially inner side to the outer side. Also, the receiving surface 103A formed on the upper surface of the annular coupling portion 103 of the piston 102 is inclined so as to gradually go downward as it goes from the radially inner side to the outer side. 7, when the stem 104 is pushed down, the elastic member 101 slides so that the free end warps radially outward along the receiving surface 103A. Shrinkage deformation is performed so that the length in the vertical direction is shortened.

The elastic member may not be formed integrally with the stem, may be formed integrally with the piston, or may be formed separately from the stem and the piston.
The elastic member may have other shapes, for example, a shape that contracts and deforms in a bellows shape in the vertical direction as long as it can be deformed so that the length in the vertical direction becomes short. Similarly, the receiving surface may not be formed on the piston.
The guide protrusion may have another shape such as a cylindrical shape extending in the vertical direction.
Although the straight tube portion is provided as the guide hole portion, the guide hole portion may be formed by another configuration, and the guide hole portion may not be provided.
Although the discharge device is spraying the content from the discharge hole, the content may be discharged in another manner other than spraying.
Although the stem is lowered by pushing down the discharge head by the trigger, the stem may be lowered directly by the trigger. Moreover, although the stem is moved downward by operating the trigger, the trigger may not be provided as long as the stem can be moved downward.
The discharge head may be formed integrally with the stem.
The piston guide is formed in a bottomed cylindrical shape, but is not limited to a cylindrical shape, and may be formed in other shapes such as a column shape.
The piston guide is attached to the stem, but may not be attached to the stem as long as it moves up and down integrally with the stem.
One or three or more communication holes and through holes may be formed or may not be formed. Therefore, the contents may be discharged from the discharge hole through the stem without passing through the piston guide without providing the communication hole and the through hole.
The coil spring may be disposed in another location as long as the stem and the piston guide are in the upward biased state, and the stem and the piston guide may be in the upward biased state using biasing means other than the coil spring.

  According to the present invention, industrial applicability is recognized with respect to a discharger that stabilizes the discharge mode such as the amount and momentum of the discharged contents and stabilizes the vertical movement of the stem and piston guide in the cylinder. .

DESCRIPTION OF SYMBOLS 1 Discharger, 12,104 Stem, 12C Guide protrusion part, 13 Discharge head, 13A Discharge hole, 25,101 Elastic member, 41,102 Piston, 42 Cylinder, 43 Piston guide, 43A Bottom part (lower end part), 52 Closure part , 53A, 103A Receiving surface, 67 Straight cylinder part (guide hole part)

Claims (3)

A stem disposed in an upwardly biased state so as to be movable downward;
A discharge head mounted on the upper end of the stem and having a discharge hole for the contents;
A cylindrical piston linked to the stem;
A cylinder in which the piston is slidably moved up and down;
A piston guide extending downward from the stem and penetrating the inside of the piston vertically;
With
When the stem and the piston guide are moved downward with respect to the cylinder, the contents in the cylinder are discharged from the discharge hole through the stem,
The piston has a closed portion that is slidably fitted to the piston guide so as to be vertically slidable and that blocks communication between the stem and the cylinder;
The closing portion communicates the inside of the stem and the cylinder when the piston guide moves downward with respect to the piston,
Between the stem and the piston, an elastic member is disposed that is compressed and deformed in the vertical direction by the piston and the stem as the stem and the piston guide move downward with respect to the piston.
The ejector according to claim 1, wherein a guide protrusion is formed on the stem so as to be in contact with or close to an inner peripheral surface of the cylinder. The elastic member has a cylindrical shape extending downward from the guide protrusion,
The piston is formed with a receiving surface that is inclined downward toward the inner side from the outer side in the radial direction perpendicular to the central axis of the piston, and to which the lower end of the elastic member abuts. The dispenser according to claim 1.   The dispenser according to claim 1 or 2, wherein the stem and the elastic member are integrally formed.

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