JP2023096256A - Discharge tool - Google Patents

Abstract

To prevent a solid matter from accumulating between an inner periphery surface of an outlet hole and an outer periphery surface of a valve body.SOLUTION: A discharge tool includes a cylinder, a blockage wall 12, a discharge valve 13, a discharge head 14, a piston, a biasing member 16, and a lower valve body. A inner periphery surface of an outlet hole 23 is formed with a valve seat surface 23a that increases an inner diameter of the outlet hole as it moves upward. The discharge valve includes a valve body 38 that approaches and departs from the valve seat surface in a vertical direction. An outer periphery surface of the valve body is formed in a shape of conical surface whose outer diameter increases as it moves upward, and the outer periphery surface of the valve body is provided with a protruding sealing projection 41 that extends continuously around the entire circumference and contacts the valve seat surface.SELECTED DRAWING: Figure 3

Description

The present invention relates to dispensers.

Conventionally, as shown in Patent Document 1 below, for example, a cylinder has a storage space in which contents in a container body are stored, and extends vertically. A blocking wall having an outflow hole penetrating therethrough and communicating with the storage space, a discharge valve provided to be movable up and down while being inserted into the outflow hole and opening and closing the outflow hole, a top surface of the blocking wall and an outflow. A discharge head having a discharge hole for discharging the content from the hole is fitted in the cylinder so as to be vertically slidable, closes the lower end opening of the storage space, and penetrates vertically into the container body. an urging member that supports the piston so that it can move upward in a downwardly urging state; and a lower valve body that closes the supply hole and opens the supply hole when the pressure in the storage space is negative. and a discharge valve having a valve body detachably fitted in an outflow hole is known.

JP 2021-24586 A

However, in the conventional ejector, when solid additives and solid foreign matter (hereinafter collectively referred to as solid matter) are ejected together with the contents, the solid matter does not reach the inner peripheral surface of the outflow hole and the valve. There is a possibility that it will easily accumulate between the outer peripheral surface of the main body and the body. Note that the solid foreign matter includes, for example, dust and the like that enter the container body from the outside when refilling the contents.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and provides a discharger capable of making it difficult for solid matter to accumulate between the inner peripheral surface of an outflow hole and the outer peripheral surface of a valve body. for the purpose.

The present invention employs the following means to solve the above problems. That is, the dispenser of the present invention has a storage space in which the content in the container body is stored, a cylinder extending in the vertical direction, and a cylinder that closes the upper end opening of the storage space and penetrates the storage space in the vertical direction. a closing wall formed with an outflow hole communicating with a space; a discharge valve provided vertically movable in a state of being inserted into the outflow hole to open and close the outflow hole; A discharge head having a discharge hole for discharging the contents from the outflow hole is fitted in the cylinder so as to be vertically slidable, closes the lower end opening of the storage space, and penetrates in the vertical direction. a piston having a supply hole communicating with the container body; an urging member supporting the piston so that it can move upward in a downwardly urging state; a lower valve body that opens the supply hole, and a valve seat surface is formed on the inner peripheral surface of the outflow hole so that the inner diameter of the outflow hole increases as it goes upward, and the discharge valve includes the valve seat. The valve body has a valve body that approaches and separates from the surface in the vertical direction, and the outer peripheral surface of the valve body is formed in a conical shape whose outer diameter increases as it goes upward, and the outer peripheral surface of the valve body has: A ridge-shaped sealing projection is provided which extends continuously over the entire circumference and contacts the valve seat surface.

According to the present invention, when the piston is raised against the downward biasing force of the biasing member, the internal pressure of the reservoir space rises, and the valve main body of the discharge valve moves upward from the valve seat surface, thereby moving the reservoir space. The contents inside pass through the outflow hole and are discharged from the discharge hole.
When the piston is released, the piston is restored downward by the biasing member, the pressure inside the storage space becomes negative, the lower valve body opens the supply hole, and the contents in the container body pass through the supply hole. supplied into the storage space.
Since the outer peripheral surface of the valve body is provided with a ridge-shaped sealing projection that extends continuously over the entire circumference and contacts the valve seat surface, a gap is provided between the outer peripheral surface of the valve body and the valve seat surface. In combination with the fact that the outer peripheral surface of the valve body and the valve seat surface are inclined as described above, when the contents containing solid matter are discharged, the solid matter will not reach the outflow hole. It is difficult for solid matter to accumulate between the inner peripheral surface and the outer peripheral surface of the valve body, and even if solids try to accumulate between the inner peripheral surface of the outflow hole and the outer peripheral surface of the valve body, the sealing protrusion is formed. It is possible to push aside the solid matter and to bring the seal projection into contact with the valve seat surface over the entire circumference, so that the outflow hole can be reliably closed by the discharge valve.
Since the seal projection provided on the valve body is in contact with the valve seat surface that increases the inner diameter of the outflow hole upward, the internal pressure of the storage space increases, and the contents in the storage space flow into the outflow hole. When the contents flow in, it is possible to make it easier for the contents to collide with the conical outer peripheral surface of the valve body instead of the seal projection, and the valve body can be smoothly directed upward to the valve seat surface. can be diverted from

The angle formed by the valve seat surface may be 60° or more and 80° or less in a vertical cross-sectional view along the vertical direction.

In this case, since the angle formed by the valve seat surface is 60° or more and 80° or less in the vertical cross-sectional view, the discharge valve can be smoothly moved up and down, and the solid matter can be removed from the inner circumference of the outflow hole. It is possible to make it difficult for fluid to accumulate between the surface and the outer peripheral surface of the valve body.
If the angle is less than 60°, the valve body will fit on the valve seat surface, making it difficult to ensure smooth vertical movement of the discharge valve. , it may become difficult to close the outflow hole by the discharge valve.

A lower end portion of the outer peripheral surface of the valve body may be located radially inside the inner peripheral surface of the outflow hole.

In this case, since the lower end of the outer peripheral surface of the valve body is positioned radially inward of the inner peripheral surface of the outflow hole, the internal pressure of the storage space increases, and the contents in the storage space flow into the outflow hole. When the contents flow in, it is possible to ensure that the contents easily collide with the conical outer peripheral surface of the valve body instead of the seal projection, and the valve body smoothly moves upward from the valve seat surface. can be separated from

According to this invention, it is possible to make it difficult for solid matter to accumulate between the inner peripheral surface of the outflow hole and the outer peripheral surface of the valve body.

1 is a vertical cross-sectional view of a dispenser of one embodiment; FIG. FIG. 2 is a view showing a state in which a piston is raised in the dispenser of FIG. 1; It is an enlarged view which shows the III section of FIG.

An embodiment of the dispenser will be described below with reference to the drawings.
As shown in FIG. 1, the discharger 1 includes a cylinder 11, a closing wall 12, a discharge valve 13, a discharge head 14, a piston 15, a biasing member 16, a lower valve body 17, and an operating lever. 18, and is attached via the mounting cap C to the mouth portion W1 of the container body W filled with contents. The contents are preferably liquid laundry detergents, softeners, liquid detergents for automatic dishwashers, or various liquid products containing powder, for example. The discharge head 14, the discharge valve 13, the closing wall 12, the operating lever 18, the mounting cap C, and the cylinder 11 are made of polypropylene, for example, the piston 15 is made of polyethylene, the biasing member 16, and the lower valve body. 17 is made of, for example, a metal material. Incidentally, the biasing member 16 and the lower valve body 17 may be made of a synthetic resin material.
Cylinder 11, piston 15, and biasing member 16 are arranged coaxially with common axis O. As shown in FIG. Hereinafter, the direction along the common axis O will be referred to as the vertical direction, the direction that crosses the common axis O as viewed from the vertical direction will be referred to as the radial direction, and the direction that rotates around the common axis O will be referred to as the circumferential direction.

The cylinder 11 is formed in a tubular shape extending in the vertical direction. The cylinder 11 has a storage space A in which contents are stored. The material of the cylinder 11 is preferably polypropylene, for example.
The cylinder 11 includes a main tube 21 having a cylindrical shape with a bottom, and a supply tube 22 having a diameter smaller than that of the main tube 21 and penetrating the bottom wall of the main tube 21 in the vertical direction. The storage space A is positioned above the mouth W1.
The body tube 21 protrudes upward from the mouth portion W1. A lower end portion of the main tube 21 is inserted into the opening W1. A flange portion protruding radially outward is formed on the main tube 21, and the flange portion is vertically sandwiched between the upper opening edge of the mouth portion W1 of the container main body W and the mounting cap C. , the dispenser 1 is fixed to the mouth W1.
The upper portion of the supply tube 22 protrudes upward from the bottom wall of the main tube 21 . The upper portion of the supply tube 22 is positioned below the upper end portion of the main tube 21 . A vertical groove 22 b is formed in the inner peripheral surface of the upper portion of the supply tube 22 so as to extend continuously over the entire length in the vertical direction. A lower portion of the supply tube 22 protrudes downward from the bottom wall of the main tube 21 . The diameter of the upper portion of the supply tube 22 is larger than the diameter of the lower portion of the supply tube 22 . An outside air introduction hole 22 a that communicates the inside of the supply tube 22 with the inside of the container main body W is formed in the connection portion of the supply tube 22 with the bottom wall of the main body tube 21 .

The closing wall 12 closes the upper end opening of the storage space A. As shown in FIG. The material of the blocking wall 12 is preferably polypropylene, for example. An outer fitting tube 24 extending downward and fitted onto the body tube 21 of the cylinder 11 is formed on the outer peripheral edge of the closing wall 12 . The outer fitting tube 24 is formed in a double tube shape with its lower ends connected to each other and its upper end open.
The blocking wall 12 is formed with an outflow hole 23 that penetrates in the vertical direction and communicates with the storage space A. As shown in FIG. The outflow hole 23 is arranged coaxially with the common axis O. As shown in FIG. A first valve seat surface (valve seat surface) 23a is formed on the inner peripheral surface of the outflow hole 23 so that the inner diameter of the outflow hole 23 increases upward. The first valve seat surface 23a is formed on the upper portion of the inner peripheral surface of the outflow hole 23, and the lower portion of the inner peripheral surface of the outflow hole 23 extends straight in the vertical direction. A radially central portion (hereinafter referred to as a protruding tube 12b) of the blocking wall 12 is formed in a ridged tube shape protruding upward, and an outflow hole 23 is formed in the top wall thereof.

The blocking wall 12 is formed with a topped cylindrical air reservoir 12 a having a bottom surface recessed upward and a top wall located above the outflow hole 23 . It should be noted that it is not necessary to form the air storage portion 12a in the blocking wall 12 .
Air can remain in the upper part of the air reservoir 12a even when the reservoir space A is filled with the contents. When the internal pressure of the storage space A is raised, the air in the air storage portion 12a is compressed, so that the operating load at the initial movement of the operating lever 18 can be reduced.

The ejection head 14 is formed in a capped tubular shape and is fitted into the outer fitting tube 24 . The ejection head 14 covers the upper surface of the blocking wall 12 . The material of the ejection head 14 is preferably polypropylene, for example. The ejection head 14 is formed with an ejection hole 25 for ejecting the contents from the outflow hole 23 . The discharge hole 25 opens toward the opposite side of the common axis O to the side where the air reservoir 12a is located in the radial direction.
Hereinafter, of the radial directions, the direction in which the discharge holes 25 open is referred to as the forward direction, the opposite direction is referred to as the rearward direction, and the direction orthogonal to the front-rear direction when viewed from the vertical direction is referred to as the left-right direction.

The ejection head 14 is formed with a connection tube 14 a that is fitted onto the raised tube 12 b of the blocking wall 12 and communicates with the ejection hole 25 . The connecting cylinder 14a extends downward from the lower surface of the top wall of the ejection head 14. As shown in FIG.
On the lower surface of the top wall of the ejection head 14, a restriction projection 14b projecting downward is formed in a portion positioned inside the connecting cylinder 14a. As shown in FIG. 2, the discharge valve 13 reaches the upper end position and abuts against the restricting projection 14b. The restricting protrusion 14b is formed in a plate shape with front and back surfaces facing the circumferential direction. A plurality of restricting protrusions 14b are provided at intervals in the circumferential direction. The restricting protrusion 14b is connected to the inner peripheral surface of the connecting cylinder 14a. A radially outer portion of the restricting protrusion 14b protrudes downward from a radially inner portion thereof. A radially outer portion of the restricting projection 14b is connected to the connecting cylinder 14a, and a radially inner portion thereof faces the discharge valve 13 in the vertical direction.

The piston 15 is fitted vertically slidably inside the body tube 21 of the cylinder 11 and closes the lower end opening of the storage space A. As shown in FIG. The material of the piston 15 is preferably polyethylene, for example. A supply hole 26 is formed in the piston 15 so as to communicate with the inside of the container body W through the vertical direction.
In the illustrated example, the piston 15 is formed in a multistage cylindrical shape with a diameter decreasing downward, and a lower cylindrical portion 31 located at the lowest position has a bottom wall. In the piston 15, the sliding cylinder portion 27 that slides on the inner peripheral surface of the cylinder 11 is positioned at the highest position.

An outer seal tube 32 and an inner seal tube 33 extending downward are formed on the bottom wall of the lower tubular portion 31 . The outer seal cylinder 32 surrounds the upper portion of the inner seal cylinder 33 from the outside in the radial direction. The lower portion of the inner seal cylinder 33 is located below the outer seal cylinder 32 . The outer seal cylinder 32 is fitted in the upper part of the supply cylinder 22 so as to be vertically slidable, and the inner seal cylinder 33 is fitted in the lower part of the supply cylinder 22 so as to be vertically slidable.

The supply hole 26 penetrates the bottom wall of the lower cylindrical portion 31 in the vertical direction, and communicates the inside of the container main body W and the inside of the storage space A with each other. The upper surface of the bottom wall of the lower cylindrical portion 31 (hereinafter referred to as the second valve seat surface 31a) extends downward toward the supply hole 26. As shown in FIG.
Here, the supply hole 26 is closed by the lower valve body 17 and opened when the storage space A has a negative pressure. The lower valve body 17 is spherical and arranged on the second valve seat surface 31a. The material of the lower valve body 17 is preferably stainless steel or polypropylene, for example.

A support member 34 is provided on the piston 15 . Note that the support member 34 may be formed integrally with the piston 15 . The material of the support member 34 is preferably polypropylene, for example.
The support member 34 includes a topped cylindrical mounting portion 35 fitted in a portion positioned between the sliding cylindrical portion 27 and the lower cylindrical portion 31 in the piston 15, and a top wall 35a of the mounting portion 35. It has a capped tubular guide portion 36 extending upward, and a retainer projection 34a extending downward from the top wall 35a of the mounting portion 35 .

A communication opening penetrating in one of the radial directions is formed in the peripheral wall of each of the mounting portion 35 and the guide portion 36 . In the illustrated example, the communication opening penetrates the peripheral walls of the mounting portion 35 and the guide portion 36 in the left-right direction. A top wall 36a of the guide portion 36 is formed in an annular shape. The inner peripheral edge portion of the top wall 36 a of the guide portion 36 protrudes radially inward from the inner peripheral surface of the peripheral wall of the guide portion 36 .
The retainer projection 34 a is inserted into the lower cylinder portion 31 of the piston 15 . The retainer protrusion 34a has a cross shape when viewed from above and below. The lower valve body 17 that is separated upward from the second valve seat surface 31a abuts against the retaining protrusion 34a, thereby restricting the lower valve body 17 from being detached from the lower cylindrical portion 31. As shown in FIG.

The biasing member 16 supports the piston 15 in a downwardly biased state so as to be movable upward. The biasing member 16 is a coil spring. The material of the biasing member 16 is preferably stainless steel or polyacetal copolymer, for example. The upper end of the biasing member 16 is inserted into the protuberance tube 12b of the blocking wall 12 and abuts against the lower surface of the blocking wall 12. As shown in FIG. A guide portion 36 of the support member 34 is inserted into the lower portion of the biasing member 16 . A lower end portion of the biasing member 16 is in contact with the upper surface of the top wall 35 a of the mounting portion 35 of the support member 34 .

The discharge valve 13 is vertically movable while being inserted into the outflow hole 23 of the blocking wall 12 to open and close the outflow hole 23 . The discharge valve 13 includes a shaft portion 37 and a valve body 38 and is arranged coaxially with the common axis O. As shown in FIG. The discharge valve 13 is formed in a cylindrical shape with a bottom. Note that the discharge valve 13 may be a solid rod body. The material of the discharge valve 13 is preferably polypropylene, for example.

The shaft portion 37 extends vertically and is inserted into the guide portion 36 of the support member 34 so as to be vertically movable. The shaft portion 37 is formed with a locking protrusion 37a that abuts on the inner peripheral edge portion of the top wall 36a of the guide portion 36 from below. The discharge valve 13 is urged downward by the urging member 16 via the locking projection 37a and the guide portion 36. As shown in FIG.

The valve body 38 is provided so as to be able to approach and move away from the first valve seat surface 23a of the closing wall 12 in the vertical direction. The outer peripheral surface of the valve main body 38 is formed in a conical shape with an outer diameter that increases upward. As shown in FIG. 3, in a longitudinal sectional view along the vertical direction, the angle .theta.1 formed by the outer peripheral surface of the valve body 38 and the angle .theta.2 formed by the first valve seat surface 23a are equal to each other. Each of these angles θ1 and θ2 is 60° or more and 80° or less, preferably 70° or more and 75° or less (approximately 72.5° in the illustrated example).

A lower end portion of the outer peripheral surface of the valve body 38 is located radially inside the inner peripheral surface of the outflow hole 23 . The lower end portions of the outer peripheral surface of the valve body 38 and the inner peripheral surface of the outflow hole 23 face each other in the radial direction.
An upper end portion of the valve body 38 is provided with an annular projection 39 projecting upward. The upper end opening edge of the annular projection 39 is located above the upper surface of the top wall of the protruding tube 12b in the closing wall 12. As shown in FIG. The upper opening edge of the annular protrusion 39 abuts against the restricting protrusion 14b of the ejection head 14 when the ejection valve 13 is positioned at the raised end position.

In the present embodiment, a ridge-shaped seal projection 41 is provided on the outer peripheral surface of the valve body 38 so as to extend continuously over the entire circumference and abut against the first valve seat surface 23a.
The seal projection 41 is provided at the upper end portion of the outer peripheral surface of the valve body 38 and continues to the lower end portion of the annular projection 39 . The seal projection 41 is pointed in a direction orthogonal to the first valve seat surface 23a from the outer peripheral surface of the valve body 38 in the vertical cross-sectional view.

As shown in FIG. 1, the operation lever 18 is inserted into a portion of the cylinder 11 located outside the storage space A, and is connected to a push-up portion 42 that pushes up the piston 15, and the push-up portion 42. A lever portion 43 protruding from inside 11 is provided, and the piston 15 moves up and down in a state in which the push-up portion 42 and the piston 15 are engaged with each other as the operation lever 18 rotates around the rotation shaft 42a. The material of the operating lever 18 is preferably polypropylene, for example.

The push-up part 42 is inserted in the front-rear direction into a portion located below the storage space A in the body tube 21 of the cylinder 11 and pushes up the piston 15 . The push-up portion 42 penetrates the rear end portion of the main body tube 21 in the front-rear direction. The push-up portion 42 includes a pair of plate bodies sandwiching the lower cylindrical portion 31 of the piston 15 in the left-right direction. These plates are formed in a rectangular shape with front and back surfaces facing in the left-right direction and elongated in the front-rear direction. The push-up portion 42 abuts on the lower surface of a stepped wall 15 a formed in a portion of the piston 15 located between the sliding tubular portion 27 and the lower tubular portion 31 and facing in the vertical direction. A rotating shaft 42a projecting outward in the left-right direction is formed at each rear end of the pair of plates.
The lever portion 43 connects the pair of plates in the push-up portion 42 in the left-right direction, and protrudes from inside the body tube 21 of the cylinder 11 toward the rear of the outer fitting tube 24 of the blocking wall 12 . The lever portion 43 extends upward toward the rear.

Here, the outer fitting cylinder 24 is formed with a grip portion 44 extending downward toward the rear.
The grip portion 44 includes a pair of side plates 44a that sandwich the lever portion 43 in the left-right direction, and a grip plate 44b that connects the pair of side plates 44a and faces the lever portion 43 from below. A bearing hole into which the rotary shaft 42a of the operating lever 18 is rotatably fitted is formed in the radially inner end portion of the side plate 44a. When pushing the upper surface of the lever portion 43 with the thumb, another finger is placed along the forward facing inner surface of the grip plate 44b.

Next, the action of the ejector 1 will be described.

When the thumb is placed on the upper surface of the lever portion 43 and the other finger is placed along the inner surface of the grip plate 44b, the lever portion 43 is pushed downward around the rotating shaft 42a by the thumb. The lower surface of the stepped wall 15a of the piston 15 is thrust upward. Thereby, as shown in FIG. 2, the piston 15 moves upward in the cylinder 11 while compressing the biasing member 16 in the vertical direction, and the internal pressure of the storage space A increases.

In the above process, the discharge valve 13 moves upward, and the valve body 38 separates upward from the first valve seat surface 23a of the closing wall 12 . As a result, the contents of the storage space A flow out from the outflow hole 23 and are discharged from the discharge hole 25 through the connecting cylinder 14 a of the discharge head 14 . At this time, the outer seal cylinder 32 and the inner seal cylinder 33 are kept fitted in the supply cylinder 22, and the portion of the body cylinder 21 of the cylinder 11 located outside the storage space A is the supply cylinder. 22 communicates with the interior of the container body W through the longitudinal groove 22b and the outside air introduction hole 22a.

When the lever portion 43 is released, the piston 15 is moved downward by the restoring force of the urging member 16, the stepped wall 15a of the piston 15 pushes down the push-up portion 42, and the operating lever 18 rotates around the rotary shaft 42a. .

In the above process, the storage space A expands to a negative pressure, the discharge valve 13 moves downward, the seal projection 41 comes into contact with the first valve seat surface 23a, and the lower valve body 17 moves to the second valve seat surface. It separates upward from 31a. As a result, the supply hole 26 is opened, and the contents in the container main body W are supplied to the storage space A through the supply tube 22 of the cylinder 11 and the supply hole 26 . At this time, the outside air is supplied into the container main body W through the portion of the body cylinder 21 of the cylinder 11 located outside the storage space A, the vertical groove 22b and the outside air introduction hole 22a in the supply cylinder 22. be.

As described above, according to the discharger 1 according to the present embodiment, the ridge-shaped seal projection 41 extending continuously over the entire circumference of the outer peripheral surface of the valve body 38 and coming into contact with the first valve seat surface 23a is provided. Therefore, a gap is provided between the outer peripheral surface of the valve body 38 and the first valve seat surface 23a, and the outer peripheral surface of the valve body 38 and the first valve seat surface 23a are inclined as described above. This makes it difficult for the solids to accumulate between the inner peripheral surface of the outflow hole 23 and the outer peripheral surface of the valve body 38 when the content containing the solids is discharged. At the same time, even if solid matter tries to accumulate between the inner peripheral surface of the outflow hole 23 and the outer peripheral surface of the valve body 38, the solid matter is pushed aside by the seal projection 41, and the seal projection 41 moves to the first valve seat. The surface 23a can be brought into contact with the entire circumference, and the outflow hole 23 can be reliably closed by the discharge valve 13. As shown in FIG.

Since the seal projection 41 provided on the valve main body 38 contacts the first valve seat surface 23a, which increases the inner diameter of the outflow hole 23 upward, the internal pressure of the storage space A increases, and the pressure inside the storage space A increases. When the contents of flow into the outflow hole 23, the contents can easily collide with the outer peripheral surface of the valve body 38 formed in a conical surface instead of the seal projection 41, and the valve The main body 38 can be directed upward and smoothly separated from the first valve seat surface 23a. After the valve main body 38 is separated upward from the first valve seat surface 23a, the contents of the storage space A smoothly pass through the outflow hole 23. As shown in FIG.

In the vertical cross-sectional view, the angle θ2 formed by the first valve seat surface 23a is 60° or more and 80° or less. and the outer peripheral surface of the valve body 38.
If the angle θ2 is less than 60°, the valve body 38 will fit into the first valve seat surface 23a, making it difficult to ensure smooth vertical movement of the discharge valve 13. If the angle θ2 exceeds 80°, the solid matter will The liquid tends to accumulate on the first valve seat surface 23 a , and it may become difficult for the discharge valve 13 to block the outflow hole 23 .

Since the lower end portion of the outer peripheral surface of the valve body 38 is located radially inward of the inner peripheral surface of the outflow hole 23, the internal pressure of the storage space A rises, and the contents in the storage space A flow out of the outflow hole. 23, the contents can easily collide not with the seal projection 41 but with the outer peripheral surface of the valve main body 38 formed in a conical surface shape. It can be smoothly separated upward from the valve seat surface 23a.

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

For example, a configuration may be adopted in which the piston 15 is linked to the vertical movement of the ejection head 14 without providing the operation lever 18 .

In addition, it is possible to appropriately replace the components in the above embodiments with known components without departing from the scope of the present invention, and the above embodiments and modifications may be combined as appropriate.

1 Discharger 11 Cylinder 12 Closing Wall 13 Discharge Valve 14 Discharge Head 15 Piston 16 Biasing Member 17 Lower Valve Body 23 Outflow Hole 23a First Valve Seat Surface (Valve Seat Surface)
25 Discharge hole 26 Supply hole 38 Valve main body 41 Seal projection A Storage space W Container main body

Claims (3)

a cylinder having a storage space in which contents in the container body are stored and extending in the vertical direction;
a blocking wall that blocks an upper end opening of the storage space and is formed with an outflow hole that penetrates in the vertical direction and communicates with the storage space;
a discharge valve that is vertically movable while being inserted into the outflow hole, and that opens and closes the outflow hole;
a discharge head covering the upper surface of the blocking wall and having a discharge hole for discharging contents from the outflow hole;
a piston fitted in the cylinder so as to be vertically slidable, and formed with a supply hole that closes a lower end opening of the storage space and penetrates in the vertical direction and communicates with the container body;
a biasing member that supports the piston so that it can move upward in a downwardly biased state;
a lower valve body that closes the supply hole and opens the supply hole when the pressure in the storage space is negative;
A valve seat surface is formed on the inner peripheral surface of the outflow hole so that the inner diameter of the outflow hole increases as it goes upward,
The discharge valve includes a valve body that vertically approaches and separates from the valve seat surface,
The outer peripheral surface of the valve body is formed in a conical shape with an outer diameter that increases upward,
A discharger, wherein an outer peripheral surface of the valve body is provided with a ridge-shaped sealing projection that extends continuously over the entire circumference and contacts the valve seat surface. 2. The dispenser according to claim 1, wherein an angle formed by said valve seat surface is 60[deg.] or more and 80[deg.] or less when viewed in vertical cross section. 3. The dispenser according to claim 1, wherein a lower end portion of the outer peripheral surface of the valve body is located radially inside the inner peripheral surface of the outflow hole.

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