JP2018052589A - Discharge pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge pump in which whether or not opening is performed can be discriminated and which is excellent in an assembly work.SOLUTION: A discharge pump 10 comprising: a fitting cap 11 which is fitted to a mouth 5 of a container body 2; a pump 13 having a stem 12, which is so inserted as to be movable downward in an upward energized state, inside the fitting cap; a push-down head 15 having a discharge nozzle 64 which is fitted to an upper end part of the stem and at a tip of which a discharge hole 14 is formed; and a regulation cylinder 16 to which the push-down head positioned at a descent end position P1 is screwed and which regulates upward movement of the push-down head and the stem. The push-down head comprises a lower side head cylinder 50 which is screwed to the regulation cylinder, and an upper side head cylinder 60 on which the discharge nozzle is formed and inside which the lower side head cylinder is located. A removal piece 70, which extends in a circumferential direction along around a center axis O of the stem and is provided along a peripheral wall part 61 of the upper side head cylinder, is connected to the regulation cylinder via a breakable first weakened part 71.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a discharge pump.

2. Description of the Related Art Conventionally, there is known a discharge container in which an unintended rotation operation of a pressing head positioned at a descending end position is prevented.
For example, a discharge container shown in Patent Document 1 below includes a pressing head that is attached to the upper end portion of the stem and is screwed to the stem insertion tube at the lower end position, a mouth portion of the container body, a mounting cap, and a pressing head. A cylindrical cover body surrounding from the outside.
The cover body is mounted by fitting an engagement protrusion formed at the mouth of the container body into the fitting hole in a state where the nozzle cylinder of the pressing head is inserted into the vertically long window hole. Yes. A removal piece is connected to the cover body through a weakened portion that can be broken. Thereby, it is possible to remove the cover body by removing the removal piece so as to scoop off the cover body while breaking the weakened portion.

  In the discharge container configured as described above, the cover body is used to prevent the pressing head located at the lower end position from being unexpectedly rotated, and the pressing head is not intended to be screwed. It is prevented from being released without it. Therefore, it is possible to determine whether or not the package has been opened based on the presence or absence of the cover body when the product is distributed or unused.

JP 2006-89110 A

However, since the conventional discharge container includes the cover body, it is easy to assemble the discharge container, and there is a problem in assembling workability.
For example, when assembling a discharge container, a pre-assembled unit with a push-down head screwed onto a stem insertion cylinder is attached to a container body filled with contents via a mounting cap. To do. Thereafter, the cover body is mounted so as to cover the pressing head while passing the nozzle cylinder through the window hole, and the cover body is attached by engaging the engagement protrusion on the container body side in the fitting hole.

  As described above, it is necessary to carry out the work of attaching the cover body alone, and after the cover body is once put on the pressing head while avoiding interference with the nozzle cylinder, the engagement protrusions into the fitting holes are formed. Engagement is required, and complicated work is required to attach the cover body. Therefore, it took time to assemble the discharge container, and the number of assembly steps was easy to increase.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a discharge pump that can determine whether or not it has been opened and that is excellent in assembling workability. It is.

(1) A discharge pump according to the present invention includes a mounting cap that is mounted on a mouth portion of a container body in which contents are stored, and a stem that is inserted inside the mounting cap so as to be movable downward in an upward biased state. A pump having an upper end of the stem, and having a discharge nozzle for discharging the contents and having a discharge nozzle having a discharge nozzle formed at the tip thereof, and the press at the lower end position. And a control cylinder that restricts upward movement of the pressing head and the stem, and the pressing head is formed with a lower head cylinder that is screwed to the control cylinder, and the discharge nozzle. An upper head cylinder in which the lower head cylinder is disposed on the inner side, and the regulating cylinder extends in a circumferential direction around a central axis of the stem, and a peripheral wall of the upper head cylinder Arranged along the section Sahen is coupled via a first weakened portion breakable.

  According to the discharge pump according to the present invention, since the removal piece is disposed along the peripheral wall portion of the upper head cylinder in which the discharge nozzle is formed, for example, with the removal piece attached, When the pressing head is rotated in the loosening direction, stress is easily applied to the removal piece, and the first weakened portion is easily broken. Accordingly, by visually confirming whether or not the first weakened portion is broken, it is possible to easily determine whether or not the pressing head is loosened and opened, for example, when the product is distributed or not used.

In particular, the pressing head is composed of two parts, a lower head cylinder and an upper head cylinder. Therefore, for example, after the lower head cylinder is screwed to the restriction cylinder, the upper head cylinder is combined with the lower head cylinder by pressing the upper head cylinder against the lower head cylinder with a stopper or the like. be able to. Therefore, even if the removal piece is integrally formed on the restriction cylinder, the lower head cylinder and the upper head cylinder can be combined without being restricted by the removal piece, and without being restricted by the discharge nozzle. A lower head cylinder and an upper head cylinder can be combined. Furthermore, since the lower head tube can be assembled by screwing as in the prior art, and the upper head tube can be assembled by a stopper or the like, it is possible to divert the existing assembly manufacturing apparatus.
From these things, while being able to suppress the increase in an assembly man-hour, an easy assembly can be performed.

  When using the discharge pump, after the first weakened portion is broken and the removal piece is separated from the regulating cylinder, the pushing head with respect to the regulating cylinder is rotated in the loosening direction by rotating the pushing head with respect to the regulating cylinder. Can be released. Thereby, the pressing head can be moved from the descending end position to the ascending end position. As a result, the pressing head can be shifted to a state where it can be pressed down, and the contents can be discharged.

(2) The removal piece may be formed with a breakable second weakening portion, and the removal piece may be divided in a circumferential direction by breakage of the second weakening portion.

In this case, since the removal piece can be divided in the circumferential direction by breaking the second weakened portion, for example, even if the removal piece is formed in an annular shape, the removal piece can be removed from the regulating cylinder.
For example, after the first weakened portion is broken and the removal piece is separated from the regulation cylinder, the removal piece can be detached from the regulation cylinder by dividing the removal piece in the circumferential direction. Alternatively, before the first weakened portion is broken, the second weakened portion is broken to divide the removed piece in the circumferential direction, and then the removed piece is removed from the regulation cylinder while breaking the first weakened portion. You can also.
In any case, since the removal piece can be divided in the circumferential direction, the removal piece can be smoothly removed from the regulating cylinder, and the discharge pump can be used without worrying about the removal piece. Therefore, ease of use can be improved, and appearance can be improved by removing the removal piece.

(3) Between the peripheral wall portion of the upper head cylinder and the removal piece, there are anti-rotation parts that engage with each other in the circumferential direction and restrict relative rotation of the upper head cylinder and the removal piece. It may be formed separately.

In this case, since the pressing head and the removal piece can be rotated together, the removal piece can be moved in the circumferential direction with respect to the regulation cylinder by rotating the depression head in the loosening direction with respect to the regulation cylinder. it can. Therefore, stress (rotational force) is easily applied to the first weakened portion, and the first weakened portion is easily broken. Thus, since the 1st weakening part can be fractured using rotation operation of a pressing head, the separation work of the removal piece to a regulation cylinder can be performed easily.
In addition, when the merchandise is distributed or unused, for example, when an external force is applied to the pressing head to rotate the pressing head in the loosening direction with respect to the restriction cylinder, the first weakened portion is easily broken. Therefore, it becomes easy to easily determine whether or not the pressing head is loosely opened based on whether or not the first weakened portion is broken.

(4) A plurality of the first weakening portions are formed at intervals in the circumferential direction, and the circumferential wall portion of the upper head cylinder is located between the first weakening portions adjacent to each other in the circumferential direction, A protrusion located below the lower end edge of the removal piece may be formed.

In this case, the protrusion moves spirally by rotating the pressing head in the loosening direction with respect to the restriction cylinder, that is, moves upward while moving in the circumferential direction. After contacting the edge from below, the removal piece is gradually pushed up so as to be separated from the regulation cylinder. Thereby, a stress can be made to act on a 1st weakening part and a 1st weakening part can be fractured | ruptured. Thus, since the first weakened portion can be broken by using the rotation operation of the pressing head, the removal piece can be easily separated from the restriction cylinder.
And since a projection part can also be made to contact a 1st weakening part from the circumferential direction because a projection part moves helically, a 1st weakening part can also be fractured | ruptured by a projection part. Therefore, also in this respect, it is easy to perform the separation work of the removal piece with respect to the restriction cylinder.
Further, it becomes easier to determine whether or not the pressing head is loosely opened based on whether or not the first weakened portion is broken.

(5) The removal piece may be disposed outside a peripheral wall portion of the upper head cylinder.

  In this case, since the removal piece itself can be visually recognized from the outside, it is easy and easy to determine whether or not the removal piece has been opened based on the presence or absence of the removal piece. Moreover, since it becomes easy to fracture | rupture a 1st weakening part when using a discharge pump, it is easy to perform the removal piece of the removal piece with respect to a control cylinder easily.

  According to the present invention, it is possible to determine whether or not it has been opened, and it is possible to provide a discharge pump that is excellent in assembling workability.

It is a semi-longitudinal sectional view showing a first embodiment of a discharge container including a discharge pump according to the present invention. It is the semi-longitudinal sectional view which expanded the discharge pump periphery shown in FIG. It is a top view of the discharge pump shown in FIG. It is a perspective view of the removal piece shown in FIG. It is a half longitudinal cross-sectional view which shows 2nd Embodiment of the discharge pump which concerns on this invention. It is a top view of the discharge pump shown in FIG. It is a semi-longitudinal sectional view showing a third embodiment of the discharge pump according to the present invention. It is a top view of the discharge pump shown in FIG. It is a figure which shows the state which the removal piece was cut | disconnected from the control cylinder and fell | lowered by the 1st weakening part fracture | rupture from the state shown in FIG. It is a half longitudinal section showing a 4th embodiment of a discharge pump concerning the present invention. It is a top view of the discharge pump shown in FIG. It is a semi-longitudinal sectional view showing a fifth embodiment of the discharge pump according to the present invention. It is a figure which shows the state which the removal piece was cut | disconnected from the control cylinder and fell | fallen by the 1st weakening part fracture | rupture from the state shown in FIG.

(First embodiment)
Hereinafter, a first embodiment of a discharge pump according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge pump 10 of the present embodiment includes a cylindrical mounting cap 11 that is mounted on a mouth portion 5 of a bottomed cylindrical container body 2 in which contents are accommodated, and a mounting cap 11. Inside, a pump 13 having a stem 12 inserted so as to be movable downward in an upward biased state, and a discharge nozzle mounted at the upper end of the stem 12 and having a discharge hole 14 for discharging the contents formed at the tip 64 and a cylindrical regulation cylinder 16 that is screwed to the depression head 15 located at the lower end position P1 and regulates the upward movement of the depression head 15 and the stem 12. ing.
The restriction cylinder 16 restricts the rotational movement of the push-down head 15 located at the lowered end position P1 by a later-described removal piece 70 formed integrally with the restriction cylinder 16 so that the push-down head 15 and the stem 12 move upward. Is regulated.
The discharge container 1 is composed of the discharge pump 10 and the container body 2.

  The stem 12 and the pressing head 15 are positioned at the lower end position P1 when not in use or the like, and the rotational movement (upward movement) is restricted by screwing the pressing head 15 to the restriction cylinder 16. It is said that it was in the state. On the other hand, in the use stage, the pressing head 15 is positioned at the rising end position P2 together with the stem 12, and shifts to a standby state for pressing.

In addition, the container main body 2, the mounting cap 11, the stem 12, the pressing head 15, and the restriction cylinder 16 are arranged in a state where their respective central axes are located on a common axis. In the present embodiment, this common axis is referred to as a container axis O, the pressing head 15 side along the container axis O is referred to as the upper side, and the bottom side of the container body 2 is referred to as the lower side.
Further, in a plan view viewed from the container axis O direction, a direction orthogonal to the container axis O is referred to as a radial direction, and a direction around the container axis O is referred to as a circumferential direction. Furthermore, in the circumferential direction, the direction in which the container axis O rotates clockwise in a top view of the discharge container 1 is referred to as a first rotation direction M1, and the opposite side is referred to as a second rotation direction M2.

The container body 2 is formed in a bottomed cylindrical shape having a bottom portion, a trunk portion 3, a shoulder portion 4 and a mouth portion 5 (not shown). In the illustrated example, the upper end portion of the body portion 3 is formed so as to gradually increase in diameter toward the connecting portion with the shoulder portion 4, and the shoulder portion 4 is formed so as to project outward in the radial direction.
However, the shape of the container body 2 is not limited to this case. Moreover, as a shape of the trunk | drum 3, for example, a cross-sectional view circular shape, an ellipse shape, and a polygonal shape may be sufficient, and it is not limited to a specific shape.

  A first screw portion 6 to which the mounting cap 11 is screwed is formed on the outer peripheral surface of the mouth portion 5. The first screw portion 6 is formed in a spiral shape so that the mounting cap 11 is tightened when the mounting cap 11 is rotated relative to the container body 2 in the first rotation direction M1. Therefore, the second rotation direction M2 is the loosening direction of the mounting cap 11.

  On the outer peripheral surface of the mouth portion 5, an annular protrusion 7 that protrudes outward in the radial direction is formed at a portion located below the first screw portion 6. The annular protrusion 7 is located above the connection portion between the mouth portion 5 and the shoulder portion 4.

  As shown in FIGS. 1 and 2, the pump 13 is held by the mounting cap 11 while being inserted into the stem 12 and the mouth portion 5 of the container body 2, and the stem 12 is erected upward. The cylinder 20 and a piston (not shown) that are linked to the stem 12 and are slidably fitted in the cylinder 20 are provided.

The cylinder 20 is arranged coaxially with the container axis O, and is formed in a multistage cylindrical shape having a diameter reduced stepwise from the upper side toward the lower side.
At the upper end of the cylinder 20, a flange portion 21 protruding outward in the radial direction is formed in an annular shape over the entire circumference of the cylinder 20. The flange portion 21 is disposed on the upper end opening edge of the mouth portion 5 of the container body 2 via the packing 22. Thereby, the cylinder 20 is supported in a state of being inserted into the mouth portion 5 of the container body 2.

  In the cylinder 20, a protruding cylinder part 23 extending upward from the inner peripheral edge of the flange part 21 is formed coaxially with the container axis O, and the container main body 2 is positioned below the flange part 21. An air hole 24 that communicates the inside and the inside of the cylinder 20 is formed. A suction cylinder portion 25 extending downward is formed at the lower end portion of the cylinder 20 at the same time as the container shaft O. A tube body 26 for sucking up the contents is fitted in the suction cylinder portion 25.

  In the cylinder 20, a valve member (not shown) that opens and closes the lower end opening of the cylinder 20 and a coil spring (not shown) that biases the stem 12 upward are disposed.

  The valve member is disposed so as to be positioned above the tube body 26. The valve member is a check valve that keeps the lower end opening of the cylinder 20 closed when the cylinder 20 is pressurized, and opens the lower end opening of the cylinder 20 when the cylinder 20 is depressurized. This restricts the contents in the cylinder 20 from returning to the container body 2 through the lower end opening of the cylinder 20 when the cylinder 20 is pressurized, and the contents in the container body 2 when the cylinder 20 is depressurized. Is allowed to flow into the cylinder 20 through the lower end opening of the cylinder 20.

  The piston is in close sliding contact with the inner peripheral surface of the cylinder 20 and moves up and down in the cylinder 20 along with the stem 12. The coil spring is disposed, for example, between a piston and a valve member, and urges the stem 12 upward via the piston. An annular space that is defined between the stem 12 and the cylinder 20 and communicates with the air hole 24 is formed on the stem 12 in the cylinder 20.

  The mounting cap 11 is disposed below the cap body 30 and a cap body 30 formed in a top cylinder shape having a cap cylinder 31 and an annular top wall portion 32 provided continuously to the upper end of the cap cylinder 31. And a sealing ring 36 connected to the cap body 30 via a breakable connection weakening portion 35.

  The cap cylinder 31 surrounds a portion of the mouth portion 5 of the container body 2 located above the annular protrusion 7 from the outside in the radial direction. A second screw portion 33 is formed on the inner peripheral surface of the cap cylinder 31 to be screwed into the first screw portion 6 formed in the mouth portion 5 of the container body 2.

  The top wall portion 32 is disposed on the flange portion 21 of the cylinder 20. Thereby, the cylinder 20 is held by the mounting cap 11 and prevented from being pulled upward. In addition, the protruding cylinder portion 23 of the cylinder 20 is inserted inside the top wall portion 32.

  The sealing ring 36 includes a ring main body 37 that surrounds the annular protrusion 7 and a portion of the mouth portion 5 of the container main body 2 located below the annular protrusion 7 from the radially outer side, and a diameter from the inner peripheral surface of the ring main body 37 A plurality of protruding pieces 38 that protrude toward the inside in the direction and are formed at intervals in the circumferential direction.

  The ring body 37 surrounds the mouth part 5 of the container body 2 with a gap between the ring body 7 and the annular protrusion 7. In the example shown in the figure, the ring body 37 is formed in a tapered cross-section that gradually increases in diameter from the top to the bottom.

The connection weakening part 35 is formed between the upper end opening edge of the ring main body 37 and the lower end opening edge of the cap cylinder 31, and integrally connects the ring main body 37 and the cap cylinder 31 in the container axis O direction. In the illustrated example, a plurality of connection weakening portions 35 are formed at intervals in the circumferential direction, and the thickness along the radial direction gradually decreases from the sealing ring 36 side upward, and It is formed so that the circumferential width along the circumferential direction becomes gradually narrower.
Thereby, the connection weakening part 35 is set as the structure where the connection part of the connection weakening part 35 and the cap main body 30 is easy to fracture | rupture. However, the shape of the connection weakening part 35 is not limited to this case.

  The projecting piece 38 protrudes from the lower end side of the ring body 37 toward the radially inner side, and is formed so as to gradually extend upward toward the radially inner side. The outer end portion of the protrusion piece 38 is locked from below with respect to the annular protrusion 7 formed in the mouth portion 5 of the container body 2. Thereby, the sealing ring 36 surrounds the mouth portion 5 of the container body 2 in a state in which the sealing ring 36 is prevented from coming off upward.

  Therefore, when the mounting cap 11 is rotated in the second rotational direction M2 that is the loosening direction with respect to the mouth portion 5 of the container body 2, the upward movement of the sealing ring 36 is restricted, and therefore the mounting cap 11 The cap body 30 can be gradually separated upward with respect to the sealing ring 36 with the rotation. Therefore, stress (stress that extends in the container axis O direction) can be applied to the connection weakening portion 35, and the connection weakening portion 35 can be broken.

As shown in FIGS. 1 and 2, the regulation cylinder 16 includes an outer cylinder 40 fitted (for example, undercut fitting) to the protruding cylinder portion 23 of the cylinder 20, and an inner portion arranged inside the protruding cylinder portion 23. The cylinder 41, the outer cylinder 42 surrounding the outer cylinder 40 from the radially outer side, the upper end of the outer cylinder 42 and the upper end of the outer cylinder 40 are connected in the radial direction, and the inner end thereof is connected to the inner cylinder 41. An annular connecting plate 43.
The regulation cylinder 16 may be a constituent member constituting the mounting cap 11 or the pump 13, or may be a separate constituent member from the mounting cap 11 and the pump 13.

  The inner cylinder 41 is formed so as to protrude upward from the protruding cylinder portion 23, and the lower end portion thereof is fitted inside the upper end portion of the cylinder 20. The outer circumferential surface of the portion located below the connecting plate 43 in the outer circumferential surface of the inner cylinder 41 and the inner circumferential surface of the projecting cylindrical portion 23 are each provided with a longitudinal detent rib that engages with each other in the circumferential direction. Is formed.

A portion of the outer peripheral surface of the inner cylinder 41 positioned above the connecting plate 43 is formed with a third screw portion 44 to which the pressing head 15 positioned at the descending end position P1 is screwed. The third screw portion 44 is formed in a spiral shape so that the pressing head 15 is tightened when the pressing head 15 is rotated relative to the restriction cylinder 16 in the first rotation direction M1.
The outer cylinder 42 is formed in a cylindrical shape having substantially the same diameter as the cap cylinder 31 of the mounting cap 11, and has a length that does not reach the top wall 32 of the mounting cap 11 from the outer peripheral edge of the connecting plate 43. It extends downward.

A seal cylinder 45 that closes the air hole 24 of the cylinder 20 is disposed inside the inner cylinder 41. A sealing cylinder (not shown) that is slidably fitted into the cylinder 20 is formed at the lower end of the seal cylinder 45.
The closing cylinder closes the air hole 24 when the pressing head 15 and the stem 12 are positioned at the lowered end position P1 and the pressing head 15 is screwed to the regulation cylinder 16. When the pressing head 15 and the stem 12 are located at the rising end position P2, for example, the closing cylinder is pushed up from below by the piston to leave the air hole 24, and then the air hole 24 is closed by the piston.

  The stem 12 is disposed inside the seal cylinder 45 so as to be movable up and down. An annular communication path is defined between the outer circumferential surface of the stem 12 and the inner circumferential surface of the seal cylinder 45 to communicate the annular space communicating with the air hole 24 and the outside. The seal cylinder 45 is not essential and may not be provided.

  As shown in FIGS. 1 to 3, the pressing head 15 is fitted into the lower head cylinder 50 screwed into the restriction cylinder 16 from the upper side with respect to the lower head cylinder 50, and the lower head cylinder is formed on the inner side. 50, an upper head cylinder 60, and the lower head cylinder 50 and the upper head cylinder 60 are integrally combined.

  The lower head cylinder 50 includes a screw cylinder 51 that is screwed to the inner cylinder 41 of the restriction cylinder 16, a connection cylinder 52 that surrounds the screw cylinder 51 from the radially outer side, an upper end portion of the screw cylinder 51, and a connection And an annular top wall plate 53 that integrally connects the upper ends of the cylinders 52 in the radial direction.

  A fourth screw portion 54 that is screwed to a third screw portion 44 formed on the inner cylinder 41 of the regulation cylinder 16 is formed on the inner peripheral surface of the screwing cylinder 51. The pressing head 15 and the stem 12 are held at the lowered end position P <b> 1 by the screwing of the fourth screw portion 54 to the third screw portion 44, and the upward movement is restricted. In addition, the lower end opening edge of the screwing cylinder 51 comes into contact with the connecting plate 43 of the restriction cylinder 16 from above, whereby the tightening of the lower head cylinder 50 with respect to the restriction cylinder 16 is completed.

The connecting cylinder 52 is formed in a cylindrical shape having a smaller diameter than the outer cylinder 42 of the regulating cylinder 16 and has a length that does not reach the connecting plate 43 of the regulating cylinder 16 from the outer peripheral edge of the top wall plate 53. It extends downward. Thereby, a gap is secured in the container axis O direction between the lower end opening edge of the connecting cylinder 52 and the connecting plate 43.
The top wall plate 53 protrudes radially inward from the screwed cylinder 51, and an inner peripheral edge portion thereof is located above the inner cylinder 41 of the regulating cylinder 16. However, the top wall plate 53 may not protrude radially inward from the screwed tube 51.

  On the outer peripheral surface of the connecting cylinder 52, a vertically long vertical groove 55 is formed that opens upward and extends along the container axis O direction. Note that the longitudinal groove 55 may be formed at one place, or a plurality of the longitudinal grooves 55 may be formed at intervals in the circumferential direction.

  The upper head cylinder 60 surrounds the connecting cylinder 52 from the outside in the radial direction and is fitted to the connecting cylinder 52, and a top wall part 62 having a circular shape in plan view that closes the upper end of the surrounding cylinder 61. And a fitting cylinder 63 that extends downward from the central portion of the top wall portion 62 and is fitted inside the stem 12.

The surrounding tube 61 is formed with a discharge nozzle 64 that protrudes radially outward and has a discharge hole 14 formed at the tip thereof.
In the illustrated example, the discharge nozzle 64 is formed such that the circumferential width along the circumferential direction gradually becomes narrower toward the outer side in the radial direction. In addition, the discharge nozzle 64 is formed so as to be integrated with the top wall portion 62, and extends inside the surrounding cylinder 61 and is integrally connected to the fitting cylinder 63. Thereby, the inside of the discharge nozzle 64 communicates with the inside of the fitting cylinder 63.
However, the shape of the discharge nozzle 64 is not limited to the case described above.

  The surrounding cylinder 61 is formed in a cylindrical shape having a smaller diameter than the outer cylinder 42 of the regulating cylinder 16. The lower end portion of the surrounding tube 61 is undercut fitted to the lower end portion of the connecting tube 52. By fitting the surrounding cylinder 61 into the connecting cylinder 52 in this way, the upper head cylinder 60 is located above the lower head cylinder 50 in a state where the lower head cylinder 50 is disposed inside the upper head cylinder 60. Are combined together.

A portion of the inner peripheral surface of the surrounding tube 61 located above the top wall plate 53 of the lower head tube 50 protrudes radially inward, and a lower end edge contacts the top wall plate 53 from above. Vertical ribs 65 are formed. In the illustrated example, the upper end portion of the vertical rib 65 is formed integrally with the top wall portion 62. Moreover, the vertical rib 65 may be formed in one place, and may be formed in multiple numbers at intervals in the circumferential direction.
When the vertical rib 65 comes into contact with the top wall plate 53 from above, the upper head cylinder 60 and the lower head cylinder 50 are combined while being positioned in the container axis O direction.

On the inner peripheral surface of the surrounding cylinder 61, a regulating rib 66 that protrudes inward in the radial direction and enters the longitudinal groove 55 formed in the connecting cylinder 52 is formed. The regulation rib 66 is formed in a vertically long shape along the container axis O direction, and is disposed in the vertical groove 55 over the entire length by entering the vertical groove 55 from above. Thereby, the regulation rib 66 is arrange | positioned in the vertical groove 55 in the state in which the movement to the circumferential direction was regulated.
Therefore, the relative rotation of the lower head cylinder 50 and the upper head cylinder 60 is restricted by the longitudinal grooves 55 and the restriction ribs 66, and they are combined together so as not to rotate.

  In the illustrated example, the regulation rib 66 is formed integrally with the vertical rib 65 so as to extend downward from the lower end portion of the vertical rib 65. However, the present invention is not limited to this case, and the vertical rib 65 and the regulating rib 66 may be formed separately.

A plurality of pressing ribs 67 extending along the container axis O direction are formed at intervals in the circumferential direction on a portion of the outer peripheral surface of the fitting cylinder 63 positioned above the stem 12.
A part of the lower end edge of the pressing rib 67 is in contact with the upper end opening edge of the stem 12 from above. The seal cylinder 45 is pushed down from above by the pressing rib 67 when the pressing head 15 is positioned at the lowered end position P1.

  In the discharge pump 10 configured as described above, as shown in FIGS. 1 to 4, the restriction cylinder 16 extends in the circumferential direction and extends along the surrounding cylinder (circumferential wall) 61 of the upper head cylinder 60. The removed pieces 70 arranged in this manner are connected via a first weakening 71 that can be broken.

The removal piece 70 is disposed on the radially outer side of the surrounding cylinder 61 and is disposed above the connecting plate 43 in the restriction cylinder 16.
The removal piece 70 in the illustrated example is integrally formed with a lower removal piece 70 a located below the discharge nozzle 64 and an upper removal piece 70 b located at the same height as the discharge nozzle 64.

The lower removal piece 70a is disposed on the opposite side in the radial direction from the discharge nozzle 64, and has a C-shape in plan view that surrounds a portion of the surrounding cylinder 61 that is mainly located on the opposite side in the radial direction. Is formed. Note that the lower removal piece 70 a extends in the circumferential direction so that the peripheral end portion slightly enters the lower portion of the discharge nozzle 64.
The upper removal piece 70b is formed in a C shape in plan view having a shorter length in the circumferential direction than the lower removal piece 70a, and the peripheral end edge faces the discharge nozzle 64 side. Therefore, when the pressing head 15 is rotated around the container axis O, the discharge nozzle 64 is configured to contact the peripheral edge of the upper removal piece 70b.

  Therefore, the removal piece 70 of the present embodiment functions as a rotation restricting member that restricts the rotation of the pressing head 15 relative to the restricting cylinder 16.

The first weakening portion 71 is formed between the lower end edge of the removal piece 70 and the upper surface of the connection plate 43 in the restriction cylinder 16, and integrally connects the restriction cylinder 16 and the removal piece 70 in the container axis O direction. .
In the illustrated example, a plurality of first weakening portions 71 are formed at intervals in the circumferential direction, and the thickness along the radial direction is gradually reduced as the lower end portion is directed downward from the removal piece 70 side. And the circumferential width along the circumferential direction is gradually narrowed. Thereby, the 1st weakening part 71 is set as the structure where the connection part of the 1st weakening part 71 and the control cylinder 16 is easy to fracture | rupture.
However, the shape of the 1st weakening part 71 is not limited to this case, For example, it is good also as a weakening line which formed the thin part continuously in the circumferential direction in the strip | belt shape.

(Operation of discharge pump)
Next, the operation of the discharge pump 10 configured as described above will be described. First, the case where the discharge container 1 including the discharge pump 10 is assembled will be briefly described.

In this case, first, the mounting cap 11 and the cylinder 20 are combined, and the regulation cylinder 16 and the cylinder 20 in which the removal piece 70 is integrally formed are combined. Next, the lower head cylinder 50 is rotated in the first rotation direction M <b> 1 with respect to the restriction cylinder 16, and the fourth screw portion 54 is screwed to the third screw portion 44. Thereby, the mounting cap 11, the pump 13, the regulation cylinder 16, and the lower head cylinder 50 can be combined together, and a unit in which these are combined together can be obtained.
Since the lower head cylinder 50 is disposed inside the removal piece 70, the lower head cylinder 50 can be screwed to the regulation cylinder 16 without being affected by the removal piece 70.

Next, the upper head cylinder 60 is integrally combined with the unit. That is, while fitting the fitting cylinder 63 of the upper head cylinder 60 into the upper end portion of the stem 12, the upper head cylinder 60 is moved downward so as to push down the stem 12, and the upper head cylinder 50 is moved relative to the lower head cylinder 50. The cylinder 60 is combined from above.
More specifically, by pressing the upper head cylinder 60 against the lower head cylinder 50 with a stopper or the like, the surrounding cylinder 61 of the upper head cylinder 60 is fitted to the connecting cylinder 52 of the lower head cylinder 50. (Undercut fitting). As a result, the lower head cylinder 50 and the upper head cylinder 60 can be combined together, and the pressing head 15 is held at the lowered end position P1.
Even in this case, since the upper head cylinder 60 is disposed inside the removal piece 70, the upper head cylinder 50 is not affected by the removal piece 70, and the upper head cylinder 50 is moved against the lower head cylinder 50 by a stopper. The cylinder 60 can be combined.

  In particular, when the upper head cylinder 60 is pressed down with respect to the lower head cylinder 50 with a stopper or the like, the discharge nozzle 64 for the removal piece 70 is prevented from interfering with the removal piece 70 in the container axis O direction. The upper head cylinder 60 is pushed down in a state where the direction of is properly positioned. As a result, the entire upper head cylinder 60 including the discharge nozzle 64 can be pressed without contacting the removal piece 70, and the upper head cylinder 60 can be combined with the lower head cylinder 50 in an integrated manner.

As described above, the discharge pump 10 in which the mounting cap 11, the pump 13, the regulating cylinder 16, and the pressing head 15 are combined together can be assembled.
In particular, before the upper head cylinder 60 is combined, the mounting cap 11, the pump 13, the regulation cylinder 16 and the lower head cylinder 50 can be combined in advance to form a modular unit. 50 can be easily selected and assembled.

Next, after the container body 2 is filled with the contents, the mounting cap 11 is mounted on the mouth portion 5 of the container body 2 so that the discharge pump 10 is combined with the container body 2 integrally.
Specifically, by rotating the mounting cap 11 in the first rotation direction M1 with respect to the mouth portion 5 of the container body 2, the mounting cap 11 is screwed to the mouth portion 5 of the container body 2. As a result, the discharge container 1 can be assembled.

  When the mounting cap 11 is mounted, the protruding piece 38 of the sealing ring 36 gets over the annular protrusion 7 formed on the mouth portion 5 of the container body 2 from above, and then locks against the annular protrusion 7 from below. Thereby, after the mounting cap 11 is mounted, the sealing ring 36 is restricted from moving upward.

In particular, since the pressing head 15 is composed of two parts, a lower head cylinder 50 and an upper head cylinder 60, the lower head cylinder 50 is screwed onto the restriction cylinder 16 and is then moved upward with respect to the lower head cylinder 50. The upper head cylinder 60 can be integrally combined with the lower head cylinder 50 by pressing the head cylinder 60 with a stopper or the like.
Therefore, even if the removal piece 70 is formed integrally with the restriction cylinder 16, the lower head cylinder 50 and the upper head cylinder 60 can be combined without being restricted by the removal piece 70. Moreover, as described above, it is a simple operation that appropriately positions the discharge nozzle 64 with respect to the removal piece 70 so that the discharge nozzle 64 does not interfere with the removal piece 70 in the container axis O direction. The lower head cylinder 50 and the upper head cylinder 60 can be combined without being restricted by the discharge nozzle 64.

Further, the lower head cylinder 50 can be assembled by screwing as in the conventional case, and the upper head cylinder 60 can be assembled by a stopper or the like, so that the existing assembly manufacturing apparatus can be used. is there.
Therefore, an increase in the number of assembly steps can be suppressed, and the discharge pump 10 and the discharge container 1 having excellent assembly workability can be obtained.

Next, the case where the discharge pump 10 is used will be described.
As shown in FIG. 1, when the pressing head 15 and the stem 12 are at the lowered end position P1, the removal piece 70 is disposed outside the surrounding cylinder 61 in the upper head cylinder 60. When the pressing head 15 is rotated in the second rotation direction M2 (slack direction) with respect to the restriction cylinder 16 in the attached state, the discharge nozzle 64 is a peripheral edge of the upper removal piece 70b in the removal piece 70. Rotation is restricted by touching.
Therefore, based on the presence or absence of the removal piece 70, it can be determined whether or not the press-down head 15 has been loosened and opened.

  Moreover, since the discharge nozzle 64 contacts the peripheral edge of the upper removal piece 70b as described above, stress acts on the entire removal piece 70, and thus the first weakened portion 71 is easily broken. Therefore, it is possible to determine whether or not the screwing of the pressing head 15 has been loosened and opened based on not only the presence or absence of the removal piece 70 but also the presence or absence of breakage of the first weakening portion 71.

  Further, when the pressing head 15 and the stem 12 are at the lowered end position P1, for example, the mounting cap 11 is moved in the second rotational direction M2 with respect to the mouth portion 5 of the container body 2 while the removal piece 70 is attached. Even if a rotating force to rotate acts on the mounting cap 11, it can be determined whether or not the cap is opened.

  Specifically, when the mounting cap 11 is rotated in the second rotational direction M2 with respect to the mouth portion 5 of the container body 2, the protruding piece 38 is locked to the annular protrusion 7 from below, and the sealing ring 36 Therefore, the cap body 30 moves upward with respect to the sealing ring 36 as the mounting cap 11 rotates. Therefore, it is possible to break the connection weakening portion 35 by applying a stress to the connection weakening portion 35.

Therefore, based on whether the connection weakening portion 35 is broken or not, it is possible to easily determine whether the mounting cap 11 has been opened due to a rotational force acting on the mounting cap 11 in the second rotational direction M2. That is, it is possible to recognize that “sealing” is appropriately performed by visually confirming that the sealing ring 36 is integral with the cap body 30 without breaking the connection weakening portion 35.
In particular, when the connection weakening portion 35 is broken, the sealing ring 36 is separated from the cap body 30 and falls onto the shoulder portion 4 of the container body 2. Therefore, it is possible to determine whether or not the seal ring 36 has been opened by visually recognizing whether or not the seal ring 36 is positioned on the shoulder 4.

  Next, when discharging the contents, the removal piece 70 is scraped off while breaking the first weakening portion 71. Thereby, the pressing head 15 can be rotated in the second rotation direction M2 with respect to the restriction cylinder 16, and the screwing of the pressing head 15 to the restriction cylinder 16 can be released.

When the screwing of the pressing head 15 is released, the stem 12 and the pressing head 15 are integrally moved upward by the urging force of the coil spring and moved to the rising end position P2. Thereby, the pressing head 15 can be shifted to a state where it can be pressed down, and the contents can be discharged.
Specifically, when the pressing head 15 is pressed and moved downward together with the stem 12, the piston moves downward in the cylinder 20, so that the pressure in the cylinder 20 can be increased. Thereby, the contents in the cylinder 20 can be supplied into the discharge nozzle 64 and can be discharged to the outside through the discharge hole 14.

  When the pressing of the pressing head 15 is released, the stem 12 and the pressing head 15 are restored and moved to the rising end position P2 by the urging force of the coil spring, and the inside of the cylinder 20 becomes negative pressure. Can be sucked into the cylinder 20. Thereby, it is possible to prepare for the next discharge operation by the pressing head 15.

  Moreover, since the 1st weakening part 71 is easy to be fractured | ruptured in the connection part with the control cylinder 16, when the removal piece 70 is removed, the 1st weakening part 71 can be removed with the removal piece 70. FIG. Therefore, it is possible to prevent the breakage residue of the first weakened portion 71 from remaining on the regulation cylinder 16 side, and it is possible to improve the appearance and easily eliminate an unpleasant touch.

  As described above, according to the discharge pump 10 of the present embodiment, since the removal piece 70 is provided, the pressing against the restriction cylinder 16 is performed based on the presence / absence of the removal piece 70 and the presence / absence of the breakage of the first weakening portion 71. It can be determined whether the screwing of the head 15 has been loosened or released and has been opened. Further, since the pressing head 15 is composed of two parts, the upper head cylinder 60 and the lower head cylinder 50, an increase in assembly man-hours can be suppressed, and the discharge pump 10 having excellent assembly workability can be obtained. .

(Second Embodiment)
Next, a second embodiment of the discharge pump according to the present invention will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 5 and 6, the discharge pump 80 of the present embodiment surrounds the surrounding cylinder 61 of the upper head cylinder 60 from the outer side in the radial direction over the entire circumference, and the removal piece 90 that can be divided in the circumferential direction. It has.
The removal piece 90 has a constant length along the container axis O direction, and is formed in a ring shape that surrounds a portion of the surrounding cylinder 61 of the upper head cylinder 60 located below the discharge nozzle 64 almost entirely. Has been.
The peripheral edges of the removal piece 90 are integrally connected in the circumferential direction via a fragile second weakening portion 91. Thereby, the removal piece 90 can be divided | segmented into the circumferential direction by the fracture | rupture of the 2nd weakening part 91. FIG.

In the illustrated example, the second weakening portion 91 is formed so as to protrude from one peripheral edge of the removal piece 90 toward the other peripheral edge.
However, the shape of the second weakening portion 91 is not limited to this case. For example, the thinned portion is formed along the container axis O direction between one peripheral edge of the removal piece 90 and the other peripheral edge. May be a weakening line formed continuously in a band shape. The number of the second weakening portions 91 may be set freely. For example, a plurality of second weakening portions 91 may be provided, and the removal piece 90 may be divided into a plurality of pieces in the circumferential direction.

A first engaging protrusion (rotation preventing portion) 81 protruding outward in the radial direction is formed on the outer peripheral surface of the surrounding cylinder 61 of the upper head cylinder 60. In the illustrated example, the first engaging protrusions 81 are formed in a vertically long shape extending along the container axis O direction over the entire length of the outer peripheral surface of the surrounding cylinder 61, and two first engaging protrusions 81 are formed at intervals in the circumferential direction. Yes.
However, the first engagement protrusions 81 may be formed at one place, or three or more may be formed at intervals in the circumferential direction.

  On the inner peripheral surface of the removal piece 90, there are formed second engagement protrusions (detents) 92 that protrude radially inward and are disposed on both sides of the first engagement protrusion 81 in the circumferential direction. Has been. The second engagement protrusion 92 is formed in a vertically long shape extending along the container axis O direction over the entire length of the inner peripheral surface of the removal piece 90.

  The first engagement protrusion 81 and the second engagement protrusion 92 are engaged with each other in the circumferential direction when the pressing head 15 is rotated around the container axis O, and the relative relationship between the pressing head 15 and the removal piece 90 is relative to each other. Regulate rotation.

(Operation of discharge pump)
In the discharge pump 80 configured as described above, an external force is applied to the pressing head 15 so as to rotate the pressing head 15 in the second rotation direction M2 with respect to the restriction cylinder 16 when the product is distributed or not used, for example. In this case, since the first engagement protrusion 81 and the second engagement protrusion 92 engage with each other in the circumferential direction, the pressing head 15 and the removal piece 90 can be rotated together.
Therefore, the removal piece 90 can be rotated with respect to the regulation cylinder 16, and the 1st weakening part 71 is easy to be fractured. Therefore, it becomes easy to determine whether or not the press-down head 15 is loosely opened based on whether or not the first weakening portion 71 is broken.

Further, when the discharge pump 80 is used, the removal piece 90 can be divided in the circumferential direction by breaking the second weakening portion 91, so that the removal piece 90 is further easily removed.
For example, after the first weakened portion 71 is broken and the removal piece 90 is separated from the restriction cylinder 16, the second weakening portion 91 is broken and the removal piece 90 is divided in the circumferential direction, thereby restricting the removal piece 90. It can be removed from the tube 16. Alternatively, before breaking the first weakened portion 71, the second weakened portion 91 is broken to divide the removed piece 90 in the circumferential direction, and then the removed piece 90 cut while breaking the first weakened portion 71 is removed. It can be removed from the restriction cylinder 16.
In any case, since the removal piece 90 can be divided in the circumferential direction, the removal piece 90 can be smoothly removed from the restriction cylinder 16.

Further, when the first weakening portion 71 is broken, the first weakening portion 71 can be broken using the rotation operation of the pressing head 15.
In this case, as described above, the first engagement protrusion 81 and the second engagement protrusion 92 are moved in the circumferential direction by rotating the pressing head 15 in the second rotation direction M2 with respect to the restriction cylinder 16. Therefore, the first weakening portion 71 can be broken by applying a rotational force to the removal piece 90. Therefore, the 1st weakening part 71 can be fractured | ruptured using rotation operation of the pressing head 15, and the removal operation | work of the removal piece 90 with respect to the control cylinder 16 can be performed easily.
In this case, the removal piece 90 can be removed by dividing the removal piece 90 in the circumferential direction while breaking the second weakening portion 91 thereafter.

(Third embodiment)
Next, a third embodiment of the discharge pump according to the present invention will be described. In the third embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 7 and 8, the discharge pump 100 of this embodiment includes a cylindrical removal piece 110 that surrounds the surrounding cylinder 61 of the upper head cylinder 60 from the radially outer side over the entire circumference.
The outer cylinder 42 of the restriction cylinder 16 of the present embodiment is formed to have a smaller diameter than the cap cylinder 31 of the mounting cap 11 and is formed in a cylindrical shape having the same diameter as the surrounding cylinder 61 of the upper head cylinder 60. And the removal piece 110 is formed so that not only the surrounding cylinder 61 but the upper end part side of the outer cylinder 42 may be enclosed from a radial direction outer side.

The first weakening portion 71 is formed so as to integrally connect the lower end portion of the removal piece 110 and the outer peripheral surface on the upper end portion side of the outer cylinder 42 in the radial direction, and a plurality of first weakening portions 71 are formed at intervals in the circumferential direction. ing. In the illustrated example, the first weakening portion 71 is formed such that the thickness in the container axis O direction gradually decreases from the removal piece 110 toward the radially inner side.
Thereby, the 1st weakening part 71 is set as the structure where the connection part of the 1st weakening part 71 and the control cylinder 16 is easy to fracture | rupture.
However, the shape of the 1st weakening part 71 is not limited to this case.

Further, the removal pieces 110 are disposed above the top wall portion 32 of the mounting cap 11 with a space therebetween. Thus, a gap is secured in the container axis O direction between the lower end opening edge of the removal piece 110 and the top wall portion 32.
As in the second embodiment, a first engagement protrusion 81 is formed on the outer peripheral surface of the surrounding cylinder 61, and a second engagement protrusion 92 is formed on the inner peripheral surface of the removal piece 110.

(Operation of discharge pump)
In the discharge pump 100 configured as described above, as in the second embodiment, the pressing head 15 is rotated in the second rotation direction M2 with respect to the restriction cylinder 16 when the product is distributed or not used, for example. When an external force is applied to the pressing head 15, the first engagement protrusion 81 and the second engagement protrusion 92 are engaged with each other in the circumferential direction, and the rotational force is transmitted to the removal piece 110, so that the first weakening portion 71 is broken. It is easy to be done. Therefore, it can be easily determined based on whether or not the first weakening portion 71 is broken whether the pressing head 15 is loosely screwed or not.

Particularly, as the first weakening portion 71 is broken, the removal piece 110 and the regulation cylinder 16 are separated in the container axis O direction as shown in FIG. It will fall only and will be in the state which contacted the top wall part 32 from upper direction.
Therefore, the relative positional relationship of the removal piece 110 with respect to the restriction cylinder 16 can be made different from the state before the first weakening portion 71 is broken (the state shown in FIG. 7). Therefore, based on the change in the relative positional relationship of the removal piece 110 with respect to the restriction cylinder 16, it is possible to easily determine whether or not the pressing head 15 has been opened by visual recognition.

  In the present embodiment, the second weakened portion may be formed in the removed piece 110, and the second weakened portion may be broken to divide the removed piece 110 in the circumferential direction. By doing in this way, it becomes possible to remove the removal piece 110 separated from the regulation cylinder 16.

(Fourth embodiment)
Next, a fourth embodiment of the discharge pump according to the present invention will be described. In the fourth embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 10 and 11, the discharge pump 120 of the present embodiment has a push-up protrusion (push-up protrusion) that pushes the removal piece 90 upward as the pressing head 15 rotates in the second rotation direction M <b> 2 with respect to the restriction cylinder 16. (Projection) 121 is formed on the upper head cylinder 60.

  The push-up protrusion 121 protrudes radially outward from the outer peripheral surface of the surrounding cylinder 61 and is positioned below the lower end edge of the removal piece 90. At this time, a plurality of push-up protrusions 121 are formed at intervals in the circumferential direction so as to be positioned between the first weakening portions 71 adjacent to each other in the circumferential direction. In the illustrated example, the push-up protrusion 121 is formed in a circular arc shape in plan view extending in the circumferential direction.

(Operation of discharge pump)
In the discharge pump 120 configured as described above, the push-up protrusion 121 moves spirally, that is, moves upward in the circumferential direction by rotating the pressing head 15 in the second rotation direction M2 with respect to the restriction cylinder 16. Therefore, after the push-up protrusion 121 contacts the lower end edge of the removal piece 90 from below, the push-up protrusion 121 gradually pushes up the removal piece 90 so as to be separated from the regulation cylinder 16. Thereby, the first weakened portion 71 can be broken by applying stress to the first weakened portion 71.

Accordingly, the first weakening portion 71 can be broken by using the rotation operation of the pressing head 15, so that the removal piece 90 can be easily detached from the restriction cylinder 16. In addition, since the push-up protrusion 121 moves spirally, the push-up protrusion 121 can be brought into contact with the first weakened portion 71 from the circumferential direction, and therefore, the first weakened portion 71 can be broken by the push-up protrusion 121. it can. Therefore, also in this point, the removal work of the removal piece 90 with respect to the regulation cylinder 16 can be easily performed.
Then, after the removal piece 90 is cut off, the removal piece 90 can be removed by breaking the removal piece 90 in the circumferential direction by breaking the second weakening portion 91.

  Further, for example, when an external force is applied to the pressing head 15 so as to rotate the pressing head 15 in the second rotation direction M2 with respect to the restriction cylinder 16 when the product is distributed or not used, the lifting protrusion 121 as described above. Accordingly, the first weakened portion 71 is easily broken, and therefore, based on whether the first weakened portion 71 is broken or not, it can be more easily determined whether or not the screwing of the pressing head 15 is loosened and opened.

(Fifth embodiment)
Next, a fifth embodiment of the discharge pump according to the present invention will be described. In the fifth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 12 and 13, the discharge pump 130 of this embodiment includes a removal piece 140 that is disposed inside the surrounding cylinder 61 of the upper head cylinder 60 and can be divided in the circumferential direction.
The outer cylinder 42 of the regulation cylinder 16 of the present embodiment is formed to be smaller in diameter than the cap cylinder 31 of the mounting cap 11 and is formed in a cylindrical shape having the same diameter as the connecting cylinder 52 of the lower head cylinder 50. Therefore, a gap is secured in the container axis O direction between the surrounding cylinder 61 of the upper head cylinder 60 and the top wall portion 32 of the mounting cap 11.

  A third engagement protrusion 131 protruding outward in the radial direction is formed at the upper end portion of the connecting cylinder 52 in the lower head cylinder 50. A plurality of third engagement protrusions 131 may be formed at intervals in the circumferential direction, or may be formed in an annular shape.

The surrounding cylinder 61 of the upper head cylinder 60 surrounds the connecting cylinder 52 from the outside in the radial direction in a state where a gap is left between the upper cylinder 60 and the connecting cylinder 52. The surrounding cylinder 61 is formed with a smaller diameter than the cap cylinder 31 of the mounting cap 11.
A fourth engagement protrusion 132 is formed on the inner peripheral surface of the surrounding cylinder 61 so as to protrude inward in the radial direction and to be undercut fitted to the third engagement protrusion 131. A plurality of fourth engaging protrusions 132 may be formed at intervals in the circumferential direction, or may be formed in an annular shape.

When the fourth engagement protrusion 132 is undercut fitted to the third engagement protrusion 131, the upper head cylinder 60 is fitted to the lower head cylinder 50 from above, and the lower head cylinder 50 and the upper The head cylinder 60 is combined together.
In the present embodiment, the pressing rib 67 and the vertical rib 65 in the upper head cylinder 60 are integrally formed.

A fifth engagement projection (rotation preventing portion) 135 that projects inward in the radial direction is formed on a portion of the inner peripheral surface of the surrounding cylinder 61 that is positioned below the fourth engagement projection 132. .
The fifth engagement protrusion 135 is formed in a vertically long shape extending along the container axis O direction and opens downward. The fifth engagement protrusions 135 are formed with a plurality of intervals in the circumferential direction.

The removal piece 140 is disposed in an annular space defined between the connecting cylinder 52 of the lower head cylinder 50 and the surrounding cylinder 61 of the upper head cylinder 60, and has a length along the container axis O direction. Is formed in a ring shape that surrounds the connecting cylinder 52 over almost the entire circumference.
The peripheral edges of the removal piece 140 are integrally connected in the circumferential direction via a fragile second weakening portion 141. Thereby, the removal piece 140 can be divided in the circumferential direction by the breakage of the second weakened portion 141.

In the illustrated example, the second weakening portion 141 is formed so as to protrude from one peripheral edge of the removal piece 140 toward the other peripheral edge.
However, the shape of the second weakened portion 141 is not limited to this case. For example, the thinned portion is formed along the container axis O direction between one peripheral edge of the removal piece 140 and the other peripheral edge. May be a weakening line formed continuously in a band shape. The number of second weakening portions 141 may be set freely. For example, a plurality of second weakening portions 141 may be provided and the removal piece 140 may be divided into a plurality of pieces in the circumferential direction.

The removal piece 140 protrudes slightly lower than the connecting cylinder 52 and surrounds the upper end portion of the outer cylinder 42 of the restriction cylinder 16 from the radially outer side.
The first weakening portion 71 is formed so as to integrally connect the lower end portion of the removal piece 140 and the outer peripheral surface on the upper end portion side of the outer cylinder 42 in the radial direction, and a plurality of first weakening portions 71 are formed at intervals in the circumferential direction. ing. In the illustrated example, the first weakening portion 71 is formed such that the thickness in the container axis O direction gradually decreases from the removal piece 140 toward the inside in the radial direction. Thereby, the 1st weakening part 71 is set as the structure where the connection part of the 1st weakening part 71 and the control cylinder 16 is easy to fracture | rupture.
However, the shape of the 1st weakening part 71 is not limited to this case.

A sixth engaging protrusion (projected toward the outer side in the radial direction on the outer peripheral surface of the removal piece 140 and engaged with the fifth engaging protrusion 135 formed on the surrounding cylinder 61 of the upper head cylinder 60 from the circumferential direction). An anti-rotation portion 142 is formed. The sixth engagement protrusions 142 are formed in a vertically long shape along the container axis O direction, and a plurality of sixth engagement protrusions 142 are formed at intervals in the circumferential direction corresponding to the fifth engagement protrusions 135.
Since the fifth engagement protrusion 135 and the sixth engagement protrusion 142 engage with each other in the circumferential direction, the relative rotation of the upper head cylinder 60 and the removal piece 140 is restricted.

(Operation of discharge pump)
In the discharge pump 130 configured as described above, an external force is applied to the pressing head 15 so as to rotate the pressing head 15 in the second rotation direction M2 with respect to the regulating cylinder 16 when the product is distributed or unused. In this case, since the relative rotation of the upper head cylinder 60 and the removal piece 140 is restricted by the fifth engagement protrusion 135 and the sixth engagement protrusion 142, the pressing head 15 and the removal piece 140 can be rotated together. . Therefore, the removal piece 140 can be rotated with respect to the regulation cylinder 16, and the 1st weakening part 71 is easy to be fractured.
Therefore, it becomes easy to determine whether or not the press-down head 15 is loosely opened based on whether or not the first weakening portion 71 is broken.

  In particular, as the first weakening portion 71 is broken, the removal piece 140 and the regulation cylinder 16 are separated in the container axis O direction as shown in FIG. It descends by the gap and comes into contact with the top wall 32 from above. Thereby, the removal piece 140 can be exposed to the outside from between the lower head cylinder 50 and the upper head cylinder 60.

Therefore, based on the fact that the removal piece 140 is lowered, it can be easily determined by visual recognition whether or not the pressing head 15 has been opened.
After the removal piece 140 is lowered, the removal piece 140 can be removed by dividing the removal piece 140 in the circumferential direction while breaking the second weakened portion 141.

In the present embodiment, for example, “open” or “OPEN” may be displayed on the outer peripheral surface of the removal piece 140. Examples of the display method include printing, engraving, sticker sticking, and the like, but are not limited to these cases.
By performing the display in this way, when the removal piece 140 is separated from the restriction cylinder 16 due to the breakage of the first weakening portion 71 and descends on the top wall portion 32, an indication such as “open” or “OPEN” is displayed. Can be recognized. Therefore, it can be determined easily at a glance whether or not it has been opened.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, in each of the above embodiments, the mounting cap includes the sealing ring, but the sealing ring is not essential and may not be included.
In the first embodiment, the second weakened portion may be formed in the removed piece, and the second weakened portion may be broken so that the removed piece can be divided in the circumferential direction. In this case, since the first weakened portion can be broken while dividing the removal piece in the circumferential direction, the removal piece can be easily removed from the restriction cylinder.

  Further, the push-up protrusion 121 in the fourth embodiment may be applied to the second embodiment, for example.

  In addition, the constituent elements in the above-described embodiment can be appropriately replaced with surrounding constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

P1 ... Lower end position P2 ... Upper end position 2 ... Container body 5 ... Container body port 10, 80, 100, 120, 130 ... Discharge pump 11 ... Mounting cap 12 ... Stem 13 ... Pump 14 ... Discharge hole 15 ... Press down Head 16 ... Restriction cylinder 50 ... Lower head cylinder 60 ... Upper head cylinder 61 ... Go cylinder (peripheral wall of upper head)
70, 90, 110, 140 ... removal piece 71 ... 1st weakening part 81 ... 1st engagement protrusion (rotation prevention part)
91, 141 ... second weakening portion 92 ... second engagement protrusion (rotation preventing portion)
121 ... Push-up projection (projection)
135: Fifth engaging protrusion (rotating stopper)
142 ... Sixth engagement protrusion (rotating stopper)

Claims (5)

A mounting cap mounted on the mouth of the container body in which the contents are stored;
A pump having a stem inserted inside the mounting cap so as to be movable downward in an upwardly biased state;
A topped cylindrical press head having a discharge nozzle attached to the upper end of the stem and having a discharge hole for discharging the contents formed at the tip;
The pressing head positioned at the descending end position is screwed, and includes a regulating cylinder that regulates upward movement of the pressing head and the stem,
The pressing head includes a lower head cylinder that is screwed onto the restriction cylinder, and an upper head cylinder that is formed with the discharge nozzle and on which the lower head cylinder is disposed.
A removal piece that extends in the circumferential direction around the central axis of the stem and that is disposed along the peripheral wall portion of the upper head cylinder passes through the first weakening section that can be broken. Connected, discharge pump. The discharge pump according to claim 1, wherein
The removal piece is formed with a second weakened portion that can be broken,
The discharge pump, wherein the removal piece can be divided in the circumferential direction by breaking the second weakened portion. The discharge pump according to claim 1 or 2,
Between the peripheral wall portion of the upper head cylinder and the removal piece, a rotation preventing portion that engages with each other in the circumferential direction and restricts relative rotation of the upper head cylinder and the removal piece is formed separately. The discharge pump. The discharge pump according to any one of claims 1 to 3,
A plurality of the first weakening parts are formed at intervals in the circumferential direction,
A discharge pump which is formed between the first weakening portions adjacent to each other in the circumferential direction on the peripheral wall portion of the upper head cylinder and which is located below the lower end edge of the removal piece. . The discharge pump according to any one of claims 1 to 4,
The removal piece is a discharge pump disposed outside a peripheral wall portion of the upper head cylinder.

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