JP2013028373A - Quantitative cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quantitative cap capable of enhancing operability.SOLUTION: The quantitative cap has a cylinder 11 mounted in the mouth part 3 of the container body 2 and temporarily holding contents, a sucking up cylinder 12 arranged communicatably the inside of the container body 2 and the inside of the cylinder 11, a piston 13 detachably arranged in the cylinder 11 and being slidable in the cylinder 11 in a vertical direction, a slit valve 72 arranged in the cylinder 11 and switching the communication and the blocking of the same in the inside of the cylinder 11 and the sucking up cylinder 12 according to the differential pressure in the inside of the container body 2 and the inside of the cylinder 11 and is characterized in that the slit valve 72 opens by the differential pressure of the inside of the container body 2 the inside of the cylinder 11, the contents inside of the container body 2 flows into the cylinder 11 by pulling up the piston 13 to the cylinder 11.

Description

  The present invention relates to a quantitative cap.

  Conventionally, as a metering cap, a cylinder having a suction valve disposed in a container body, an annular piston fitted to the inner peripheral surface of the cylinder at the lower end of the suction pipe, and a discharge valve at the upper end of the suction pipe are formed. There is known a configuration including a movable measuring portion to which a lightweight cup that can communicate with the inside of the suction cylinder is fixed (for example, see Patent Document 1).

  With this metering cap, the movable metering part can be moved up and down several times, and then the movable metering part can be sucked up into the cylinder by pulling the movable metering part up to the highest position, and then the movable metering part can be pushed down. By pushing down to a proper position, a substantially constant amount of the contents in the cylinder are metered into the measuring cup.

Japanese Patent No. 3667497

  However, in the above-described conventional technology, after the movable measuring part is pulled up and the contents are sucked up into the cylinder, the movable measuring part is pushed down to cause the contents in the cylinder to flow into the measuring cup. Multiple operations were necessary until it was possible to pour out.

  Accordingly, the present invention has been made in view of the above-described circumstances, and an object thereof is to provide a quantitative cap capable of improving operability.

In order to solve the above problems, the present invention proposes the following means.
The quantitative cap according to the present invention is a cylinder that is attached to the mouth of the container body and temporarily stores the contents, the inside of the container body, and a suction cylinder that is disposed so as to communicate with the inside of the cylinder, The piston is detachably attached to the cylinder, and is slidable in the cylinder along the container axial direction. The piston is disposed in the cylinder, and according to a differential pressure between the container body and the cylinder. An open / close valve that switches between communication between the cylinder and the suction cylinder and switching between the cylinders, and pulling up the piston with respect to the cylinder allows the pressure difference between the container body and the cylinder to be increased. The on-off valve is opened, and the contents in the container body flow into the cylinder.

With such a characteristic, a differential pressure is generated between the container body and the cylinder by pulling up the piston with respect to the cylinder and causing the inside of the cylinder to have a negative pressure. Then, since the opening / closing valve is opened by this differential pressure, the inside of the container body and the inside of the cylinder communicate with each other through the suction cylinder, so the contents in the container body are sucked up through the suction cylinder, and the opening / closing valve After passing through, it will flow into the cylinder. Then, by pulling out the piston from the cylinder thereafter, the inside of the cylinder becomes atmospheric pressure, and the on-off valve is closed accordingly. As a result, a predetermined amount of contents are stored in the cylinder and the cylinder is opened. Thereby, the contents can be poured out from the cylinder only by tilting the container body.
Therefore, it is possible to move from the inflow of the contents into the cylinder to the state where it can be dispensed with only one operation of pulling out the piston. The operability can be improved compared to a configuration that requires a plurality of operations before the contents can be poured out.

  In the metering cap of the present invention, the on-off valve is formed in a top tube shape, and has a valve body attached to an opening end on the cylinder side of the suction tube, and a top wall portion thereof. A slit may be formed, and the on-off valve may be opened by opening the slit by a pressure difference between the container body and the cylinder.

  In this case, by using a slit valve in which a slit is formed in the top wall portion of the valve body as an open / close valve capable of opening and closing the suction cylinder, the valve open state is stably maintained when the contents are supplied. Therefore, the contents can be reliably supplied into the cylinder. On the other hand, when the piston is withdrawn from the cylinder and the pressure in the cylinder becomes atmospheric pressure, the valve body is quickly restored and closed accordingly, so that the responsiveness is high. For this reason, the liquid breakage is improved, and a predetermined amount of contents can be reliably supplied into the cylinder.

  Moreover, the fixed_quantity | capacitance cap of this invention WHEREIN: The said top wall part of the said valve main body may be formed in the curved surface shape which protruded toward the said cylinder side.

In this case, when the piston is pulled up with respect to the cylinder, the inside of the cylinder becomes negative pressure, so that the valve body is pulled up in the protruding direction (cylinder side), so that the slit is easily opened. On the other hand, when the piston is pushed back into the cylinder after the contents have been poured out, the valve body will be pushed toward the side opposite to the protruding direction (container body side). At this time, the slit opens. Can be suppressed.
Therefore, opening / closing switching of the valve body is accurately performed.

  With the quantitative cap according to the present invention, it is possible to improve operability.

It is sectional drawing of the fixed_quantity | capacitance cap in embodiment of this invention. It is sectional drawing of a fixed amount cap, Comprising: It is explanatory drawing for demonstrating the effect | action of a fixed amount cap. It is sectional drawing of a fixed amount cap, Comprising: It is explanatory drawing for demonstrating the effect | action of a fixed amount cap. It is sectional drawing of a fixed amount cap, Comprising: It is explanatory drawing for demonstrating the effect | action of a fixed amount cap. It is sectional drawing of the fixed_quantity | capacitance cap which shows the other structure in embodiment of this invention. It is sectional drawing which shows the state which pulled out the piston in the fixed quantity cap which shows the other structure in embodiment of this invention.

Hereinafter, a quantitative cap according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the metering cap 1 according to this embodiment can communicate with a cylinder 11 attached to a mouth 3 of a container body 2 in which contents are stored, the container body 2, and the cylinder 11. And a piston 13 that is detachably provided in the cylinder 11 and that can slide in the cylinder 11 along the container axis O direction. In the present embodiment, the central axes of the container body 2, the cylinder 11 and the piston 13 are located on a common axis. Hereinafter, this common axis is referred to as the container axis O, the direction along the container axis O is referred to as the up-down direction, the cylinder 11 side along the up-down direction is referred to as the upper side, and the container body 2 side is referred to as the lower side. A direction perpendicular 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.

The cylinder 11 includes a mounting cap 21 and a cylinder body 22.
The mounting cap 21 is formed in a cylindrical shape with a top, an annular top plate 23, and an attachment tube that extends downward from the outer peripheral edge of the top plate 23 and is attached to the mouth 3 of the container body 2. 24, a guide cylinder portion 25 extending downward from the inner peripheral edge of the top plate portion 23 and disposed inside the mouth portion 3, and a connecting portion extending upward from the top plate portion 23 26.
The top plate portion 23 is supported on the opening edge of the mouth portion 3 with the packing 27 interposed therebetween. The connecting portion 26 is formed in a double cylinder shape extending at the same height on the outer periphery of the top plate portion 23 and on the inner side thereof, and the lower end portion of the cylinder body 22 is underlined between these double tubes. Cut fit.

The cylinder body 22 is formed in a cylindrical shape along the vertical direction, and includes an outer cylinder 31, an inner cylinder 32 disposed inside the outer cylinder 31, and a connecting cylinder that connects the outer cylinder 31 and the inner cylinder 32. 33.
The outer cylinder 31 includes a large-diameter portion 34 and a small-diameter portion 35 that extends from the lower end edge of the large-diameter portion 34 and is undercut-fitted to the connection portion 26 described above. The lower portion of the large-diameter portion 34 is gradually reduced in diameter as it goes downward, and a small-diameter portion 35 is continuously provided downward from the lower end edge thereof. In addition, the upper end portion of the large diameter portion 34 is formed with a pouring portion 36 that is formed thinner than other portions.

  The connecting cylinder 33 is connected to a boundary portion (a taper portion of the large diameter portion 34) between the large diameter portion 34 and the small diameter portion 35 in the outer cylinder 31, and gradually decreases in diameter from the lower side toward the upper side. A plurality of through holes 37 penetrating along the thickness direction are formed in the connecting cylinder 33 along the circumferential direction, and the inside of the container main body 2 and the inside of the cylinder main body 22 communicate with each other through the through holes 37. Yes.

  The inner cylinder 32 is connected to the inner peripheral edge of the connecting cylinder 33 in the middle part in the vertical direction, and is disposed inside the lower part of the large diameter part 34. The suction cylinder 12 is fitted to the inner cylinder 32. The suction cylinder 12 has an upper end fitted into the inner cylinder 32 and opened toward the cylinder body 22, while a lower end extends to a position close to the bottom (not shown) of the container body 2. Soaked in the contents.

Further, between the outer cylinder 31 and the inner cylinder 32 described above, a topped cylindrical support member 41 is disposed. The support member 41 includes an annular pedestal portion 42 and a fitting cylinder 43 that extends downward from the outer peripheral edge of the pedestal portion 42.
The fitting cylinder 43 is fitted to the lower part in the large-diameter portion 34 and is disposed so as to surround the inner cylinder 32 and the connecting cylinder 33 described above from the outside in the radial direction. And the inner cylinder 32 mentioned above is loosely inserted inside the base part 42 in the state which protruded upwards.

The piston 13 is disposed inside the cylinder main body 22 and has a top cylindrical movable cylinder portion 51 that can move in the vertical direction, and a bottomed cylindrical seal that is connected to the lower end of the movable cylinder portion 51. A cylindrical portion 52.
The movable cylinder portion 51 has a smaller diameter than the cylinder body 22, and the upper portion thereof is reduced in diameter as compared with the lower portion. A lid 53 that closes the extraction portion 36 of the cylinder body 22 is fitted to the upper end portion of the movable cylinder portion 51. The lid 53 is formed in a top cylinder shape that covers the extraction portion 36 from the outside. At the center in the radial direction of the lid 53, an outer fitting cylinder 54 fitted on the upper end of the movable cylinder portion 51 and an upper end surface of the movable cylinder portion 51 disposed inside the outer fitting cylinder 54 are formed. The inner fitting cylinder 56 fitted into the through-hole 55 is formed.

The seal cylinder part 52 is a connection that connects between the seal part 61 that is slidable along the inner peripheral surface of the cylinder body 22 along the vertical direction, the seal part 61, and the lower end edge of the movable cylinder part 51. Part 62.
First, the connecting part 62 is formed so that the outer peripheral edge rises upward after extending from the lower end edge of the movable cylinder part 51 toward the outer side in the radial direction.
The seal portion 61 has an intermediate portion in the vertical direction connected to the outer peripheral edge of the connecting portion 62, and gradually increases in diameter as it goes upward and downward from the intermediate portion. The upper end portion and the lower end portion of the seal portion 61 are in close contact with the inner peripheral surface of the cylinder body 22. Therefore, the seal cylinder part 52 divides the inside of the cylinder body 22 along the vertical direction.

  Here, in the present embodiment, a valve member 71 is disposed in the cylinder 11. The valve member 71 provides communication between the suction cylinder 12 and the cylinder body 22 and a slit valve (open / close valve) 72 for switching between the connection, and communication between the container body 2 and the cylinder body 22, and the blocking thereof. The check valve 73 for switching is integrally formed.

  The slit valve 72 includes a top cylindrical valve body 74 that is externally fitted to the inner cylinder 32 of the cylinder 11 described above. The valve main body 74 is disposed inside the pedestal portion 42 with a gap in the radial direction between the inner peripheral edge of the pedestal portion 42 described above. Therefore, the gap between the valve main body 74 and the inner peripheral edge of the pedestal portion 42 is an air that allows the upper space located above the pedestal portion 42 in the cylinder main body 22 to communicate with the lower space located below. A passage R1 is formed. That is, in the present embodiment, the air passage R1 is disposed so as to surround the suction cylinder 12 through which the contents circulate. Further, the lower end edge of the valve main body 74 is disposed below the pedestal portion 42 and is in contact with the upper end edge of the connecting cylinder 33 described above.

The top wall portion of the valve main body 74 is formed in a curved shape that protrudes upward. The valve body 74 covers the upper end openings of the suction cylinder 12 and the inner cylinder 32 from above, and partitions the cylinder body 22 and the suction cylinder 12. A pair of slits 76 through which the contents can pass is formed in the central portion in the radial direction of the top wall portion of the valve body 74. These slits 76 are formed in parallel to each other with a gap in the radial direction.
The slit valve 72 switches between the connection between the suction cylinder 12 and the cylinder body 22 and the blocking thereof when the slit 76 is opened and closed by elastic deformation of the valve body 74.

  The check valve 73 is an elastically deformable ring-shaped plate member that extends upward from the lower end edge of the valve main body 74 toward the outer side in the radial direction, covers the air passage R1 from below, and is in the cylinder main body 22 described above. The upper space and the lower space are partitioned. Specifically, the check valve 73 is disposed in a state where the outer peripheral edge thereof is in close contact with the lower surface of the pedestal portion 42, and is elastically deformed along the vertical direction so as to come in contact with and separate from the pedestal portion 42. The opening and closing of the air passage R1 is switched. Therefore, the check valve 73 allows air to flow into the container body 2 from the cylinder 11 side, but prohibits reverse flow. In the present embodiment, the above-described upper space in the cylinder body 22, that is, the space surrounded by the piston 13, the cylinder 11, the support member 41, and the valve member 71 is a cylinder in which contents are temporarily stored. A space S1 is formed (see FIG. 2).

Next, the operation of the quantitative cap 1 described above will be described. In the following description, the method shown in FIG. 1 will be described as an initial state, and a method for dispensing contents from the initial state will be described.
First, when the lid 53 is picked from the initial state shown in FIG. 1 and the piston 13 is pulled upward as shown in FIG. 2, the cylinder space S1 described above becomes negative pressure. Then, the check valve 73 is kept in close contact with the pedestal portion 42 due to the pressure difference between the container body 2 and the cylinder space S1, and the air passage R1 is closed. On the other hand, the valve body 74 is elastically deformed by the above-described differential pressure, whereby the slit 76 is opened. As a result, the inside of the container body 2 and the inside of the cylinder space S 1 communicate with each other through the suction cylinder 12, and the contents in the container body 2 are sucked up through the suction cylinder 12. Then, the contents sucked up through the suction cylinder 12 flows into the cylinder space S1 through the slit 76 (see arrow A in FIG. 2). In this case, an amount of contents corresponding to the amount of lifting (stroke amount) of the piston 13 flows into the cylinder space S1.

In order to pour out the contents that have flowed into the cylinder space S <b> 1, the piston 13 is further pulled up and the piston 13 is pulled out from the cylinder 11. Then, the inside of the cylinder space S1 becomes atmospheric pressure, and the valve body 74 of the slit valve 72 is restored along with this, and the slit 76 is closed, so that the suction cylinder 12 and the cylinder body 22 communicate with each other. Is cut off. As a result, a predetermined amount of contents are stored in the cylinder space S1, and the dispensing portion 36 of the cylinder 11 is opened.
Thereafter, as shown in FIG. 3, when the container body 2 is tilted, the contents stored in the cylinder space S <b> 1 can be poured out from the dispensing portion 36 of the cylinder 11.

  Further, as shown in FIG. 4, in order to supply the contents again into the cylinder space S1, the piston 13 is first pushed into the cylinder 11. At this time, the inside of the cylinder space S1 is pressurized by pushing the piston 13. Then, the pressure in the cylinder space S1 acts on the check valve 73, and the check valve 73 is elastically deformed downward, so that the check valve 73 is separated from the base portion 42 and the air passage R1 is opened. The Then, air flows into the container main body 2 through the air passage R1 and the through hole 37 of the connecting cylinder 33 (see arrow B in FIG. 4). In this case, since the air in the cylinder space S1 actively flows into the container main body 2 from the air passage R1, the opening of the slit 76 can be suppressed. Thereby, the fixed quantity cap 1 can be returned to the initial state (state of FIG. 1) shown in FIG.

  Thereafter, by repeating the above-described operation, a predetermined amount of contents can be repeatedly supplied into the cylinder space S1.

As described above, in this embodiment, the piston 11 that can be attached to and detached from the cylinder 11 is provided, and the piston 13 is lifted with respect to the cylinder 11 so that the slit 76 is opened by the differential pressure between the inside of the container body 2 and the inside of the cylinder space S1. The contents are made to flow into the cylinder 11.
According to this configuration, the cylinder space S <b> 1 becomes negative pressure, and the slit 76 opens, so that the contents in the container body 2 flow into the cylinder space S <b> 1 through the suction cylinder 12. Then, by subsequently pulling out the piston 13 from the cylinder 11, the slit 76 is closed, and the communication between the suction cylinder 12 and the cylinder 11 is blocked. As a result, a predetermined amount of contents are stored in the cylinder space S1, and the cylinder 11 is opened. Thereby, the content can be poured out from the pouring part 36 of the cylinder 11 only by inclining the container main body 2.
Therefore, in the present embodiment, the flow from the inflow of the contents into the cylinder space S1 can be shifted to the state in which it can be dispensed by only one operation of pulling out the piston 13, so that the inflow into the cylinder as in the prior art. In addition, the operability can be improved as compared with a configuration that requires a plurality of operations until the contents can be poured out, such as supply to the measuring cap.

  Moreover, in the present embodiment, since the slit valve 72 is used as the on-off valve, there is no possibility that the slit valve 72 is opened even if the container body 2 is tilted when the contents are poured out. For this reason, liquid leakage from the container body 2 to the cylinder space S1 is prevented, and only the contents stored in the cylinder space S1 are reliably poured out without an operation such as removing the cylinder 11 from the container body 2. Can do.

  In the present embodiment, by using the slit valve 72 as the on-off valve, the valve open state can be stably maintained when the contents are supplied, so that the contents can be reliably supplied into the cylinder 11. On the other hand, when the piston 13 is pulled out from the cylinder 11 and the inside of the cylinder space S1 becomes atmospheric pressure, the valve body 74 is quickly restored and closed accordingly, so that the responsiveness is high. Therefore, it is possible to improve liquid breakage and reliably supply a predetermined amount of contents into the cylinder 11.

Furthermore, since the slit valve 72 is formed in a top cylinder shape and is attached to the suction cylinder 12 via the inner cylinder 32, the assembling property can be improved.
Moreover, since the check valve 73 and the slit valve 72 are integrally formed, the number of parts can be reduced and the cost can be reduced.

Further, in the present embodiment, since the top wall portion of the valve main body 74 is formed in a protruding curved shape facing upward, when the piston 13 is pulled up with respect to the cylinder 11, the inside of the cylinder space S1 becomes negative pressure. The valve body 74 is pulled up in the protruding direction (upward). Therefore, it becomes easy to open the slit 76. On the other hand, when the piston 13 is pushed back into the cylinder 11 after the contents are poured out, the valve body 74 is pushed toward the side opposite to the cylinder 11 (downward). At this time, the slit 76 is opened. Can be suppressed.
Therefore, the opening / closing switching of the slit valve 72 is accurately performed.

As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.
For example, the design of the dimensions such as the lengths of the cylinder 11 and the piston 13 in the vertical direction can be appropriately changed.
Furthermore, in the above-described embodiment, the case where the two slits 76 are formed in parallel to each other has been described. However, the present invention is not limited to this, and design changes such as a cross shape can be made as appropriate.

In the above-described embodiment, the slit valve 72 and the check valve 73 are integrally formed. However, the present invention is not limited thereto, and both may be formed separately. In this case, as shown in FIG. 5, the check valve 73 includes a valve cylinder 101 that is externally fitted to the inner cylinder 32, and extends from the valve cylinder 101 toward the outside in the radial direction. And a valve body 102 that covers the through-hole 37 from below.
And in embodiment mentioned above, although the base part 42 was provided and the structure which opens and closes air path R1 between the base part 42 and the inner cylinder 32 with the non-return valve 73 was demonstrated, as shown in FIG. Instead of providing the portion 42, the through hole 37 of the connecting cylinder 33 may be opened and closed by the check valve 73.

Further, instead of the slit valve 72 described above, a ball valve 110 may be employed as shown in FIG.
Furthermore, as shown in FIGS. 5 and 6, the upper end opening of the inner cylinder 32 may be set to be higher than the liquid level of the contents. Thereby, it can prevent reliably that the contents supplied in the cylinder 11 flow backward.

In the embodiment described above, the case where the mounting cap 21 and the cylinder body 22 are formed separately has been described. However, as shown in FIG.
Further, as shown in FIG. 5, the lid 53 may be screwed onto the cylinder 11.

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

DESCRIPTION OF SYMBOLS 1 ... Metering cap 2 ... Container body 11 ... Cylinder 12 ... Suction cylinder 13 ... Piston 72 ... Slit valve (open / close valve)
110 ... Ball valve (open / close valve)

Claims (3)

A cylinder that is attached to the mouth of the container body and temporarily stores the contents;
A suction cylinder disposed so as to be able to communicate in the container main body and in the cylinder;
A piston detachably provided in the cylinder and slidable in the cylinder along the container axial direction;
An open / close valve that is disposed in the cylinder and that switches communication between the cylinder and the suction cylinder in accordance with a differential pressure between the container body and the cylinder, and switching between the cylinder and the shut-off cylinder.
A structure in which the opening and closing valve is opened by a differential pressure between the inside of the container body and the cylinder by pulling up the piston with respect to the cylinder, and the contents in the container body flow into the cylinder; Quantitative cap characterized by being. The on-off valve is formed in a cylindrical shape with a top, and has a valve body mounted on the cylinder-side opening end of the suction cylinder, and a slit is formed in the top wall portion thereof.
The metering cap according to claim 1, wherein the slit is opened by the pressure difference between the container body and the cylinder to open the on-off valve.   The metering cap according to claim 2, wherein the top wall portion of the valve body is formed in a curved surface protruding toward the cylinder side.

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