JP2002059039A - Aerosol mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably release a quantitative amount of a content independently of the use degree of an aerosol mechanism by preventing leakage of a compressed gas which drives a piston for releasing the content. SOLUTION: A flow route of a content from a suction pipe 19 of an upright type aerosol mechanism 1 to a fixed space 16 for a quantitative chamber is divided by a rib 20b to make only a content flow in to a space part 20g for driving a piston 17a. The gap 20e between an outside cylindrical part 14 and a connection member 20 of a housing 13 is tightly sealed. In the use mode, a hole part 11b is opened and owing to the gas pressure to the content in the space part 20g, a piston 17g is moved up against a spring 17b and a quantitative amount of the content corresponding to this movement extent L is released to the outside. Since the compressed gas does not enter the space part 20g, the gas does not leak to the outside space through gaps between the piston 17a and the outside cylindrical part 14 and between the piston 17a and the inside cylindrical part 15. A reversely standing type aerosol mechanism in which a sheath member for taking in the content is fitted in place of the suction pipe 19 is also disclosed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol mechanism for moving a responsive member such as a piston (constituting a metering chamber) by the action of compressed gas inside a container to discharge the contents of the metering chamber to an external space. More particularly, the present invention relates to an aerosol mechanism in which a space on a side for driving a response member during discharge operation is communicated only with a content passage to prevent compressed gas from entering therein, thereby preventing leakage of compressed gas.

[0002]

2. Description of the Related Art As a gas for releasing contents, a liquefied gas such as propane or dimethyl ether, or a compressed gas such as nitrogen or carbon dioxide is used. The liquefied gas mixes with the contents and is discharged to the outside together. The compressed gas does not liquefy near normal temperature and does not mix with the contents, but only discharges the contents to the outside by the pressure of the compressed gas.

[0003] While the liquefied gas has the advantage of maintaining a constant pressure while discharging, the spray characteristics do not change,
Due to the disadvantage that the price is relatively high and the pressure change with respect to the temperature is large, compressed gas may be used as a countermeasure.

FIGS. 3 and 4 are explanatory views showing a conventional aerosol mechanism using a compressed gas. FIG. 3 shows a non-use mode, and FIG. 4 shows a use mode.

3 and 4, 50 is an aerosol mechanism, 51 is a stem, 51a is a discharge passage, 51b is a hole, 51
c is the lower end, 51d is the groove of the stem 51, 52 is the stem rubber, 53 is the housing, 54 is the outer cylindrical portion of the housing, 55
Is the inner cylindrical portion of the housing, 55a is the content passage, 55b is the receiving portion, 55c is the packing fitted to the inner cylindrical portion 55, 55d
Is a lateral hole that communicates a fixed space 57 for the quantification chamber and a variable space 56 for the quantification chamber described later, and 56 is a variable space for the quantification chamber between the outer cylindrical portion 54 and the inner cylindrical portion 55 (volume changes). , 56a is a piston for discharging the contents provided in the variable space 56 for the fixed amount chamber, 56b is a spring for urging the piston 56a downward in the figure, and 57 is between the inner cylindrical portion 55 and the stem 51 (the volume does not change). ) Fixed space for the fixed amount chamber, 57a is a spring for urging the stem 51 upward in the figure, 58 is a suction tube, 59 is a connecting member between the housing 53 and the suction tube 58, 59a is a through hole, and 59b is a connecting member 59. Piston 56a
60, a mountain cap, 61, a container, 61a, a compressed gas area in the container 61, and 61b, a contents area in the container 61, respectively. The solid arrows indicate the flow of the contents, and the broken arrows indicate the flow of the compressed gas.

As shown in FIGS. 3 and 4, in the aerosol mechanism 50, a piston 56a is provided in a variable space 56 for a fixed amount chamber, and the piston 56a is moved upward by a compressed gas flowing from a through hole 59a located in a compressed gas area 61a. To the variable space for the fixed-quantity room
The contents of 56 and the fixed-side fixed-quantity chamber 57 are discharged to the outside.

As shown in FIG. 3, in the non-use mode, the contents have flowed into the fixed space 57 for the fixed amount chamber and the variable space 56 for the fixed amount room by the previous operation.

As shown in FIG. 4, when a push button (not shown) is pressed, the stem 51 descends against the bias of the spring 57a, and the lower end 51c contacts the receiving portion 55b of the inner cylindrical portion 55. Since the groove 51d of the stem 51 is closed by the packing 55c, the flow of the contents flowing from the contents passage 55a into the fixed space 57 for the fixed amount chamber and the variable space 56 for the fixed amount room is shut off.

The hole 51b of the stem 51 is a stem rubber.
52, the compressed gas is opened and the compressed gas is
The piston 56a is moved upward from the position a into the space 59b against the bias of the spring 56b.

As a result, the path of the contents is indicated by the solid arrow, the variable space 56 for the quantitative chamber, the horizontal hole 55d of the inner cylindrical portion 55, the fixed space 57 for the quantitative chamber, the hole 51b, and the release of the stem 51. Passage 51
It is released to the outside through a. The amount of the discharged contents is equivalent to the movement of the piston 56a from FIG. 3 to FIG.

When the pressing operation of the push button is stopped, as shown in FIG.
Is returned, and the hole 51b is closed by the stem rubber 52. The lower end 51c of the stem 51 is separated from the receiving portion 55b of the inner cylindrical portion 55, and the groove 51d of the stem 51 is released from the packing 55c. 61-Suction pipe 58-Content passage 55a-Stem
51 flows into the groove 51d-the fixed space 57 for the quantitative chamber-the horizontal hole 55d-the variable space 56 for the quantitative room.

At this time, the space 59b extends from the through hole 59a.
The force of the compressed gas entering the piston 56a pushes the piston 56a upward in the figure, which is offset by the force of the contents pushing the piston 56a downward, and the piston 56a
It is lowered by the force b and returns to the non-use mode position in FIG.

Accordingly, the sliding of the piston 56a allows
Since the contents in the variable space 56 for the fixed amount chamber and the fixed space 57 for the fixed amount room are discharged to the outside or the contents are flowing from the inside of the container 61, the piston 56a, the outer cylindrical portion 54, and the inner cylindrical portion The seal between 55 and is not perfect.

[0014]

As described above, in the conventional aerosol mechanism using a compressed gas, a response member such as a piston is pressed by the compressed gas itself which has flowed into a lower space thereof to discharge the contents. Like that.

Since the responding member slides between the guide member and the guide surface, the sealing action between them cannot be completed. In particular, in the use mode, as shown by the broken arrows in FIG. The compressed gas that has moved from the contact portion to the fixed amount chamber side easily leaks to the external space together with the contents.

As the aerosol mechanism is used, the pressure of the compressed gas, which is the driving source for discharging the contents, decreases,
Insufficient force to press the piston slows the release operation of the contents, makes it difficult for the contents to flow into the metering chamber, and releases the fixed amount of contents despite the contents in the container. There was a problem that it became difficult.

Therefore, in the present invention, for example, a space for pressing a response member such as a piston is communicated only with the passage of the contents to prevent the leakage of the compressed gas.
The purpose is to reliably release a fixed amount of contents regardless of the degree of use of the aerosol mechanism.

[0018]

Means for Solving the Problems In order to achieve this,
In the present invention, an aerosol mechanism having the following configuration is used. (1) The output unit (for example, a hole 11b described later) of the fixed space (for example, the fixed space 16 for the fixed room and the variable space 17 for the fixed room described later) on the external space side is closed by the content discharging operation. In addition to setting the state from the open state to the open state, the input unit (for example, a groove 11c to be described later) on the inner side of the container is set from the open state to the closed state, and a part of the quantitative chamber is configured under this setting. An aerosol mechanism that discharges the contents of the quantitative chamber from the output unit to the external space by moving a response member (for example, a piston 17a to be described later) based on the action of the compressed gas contained in the container. A space portion (for example, 20 g described later) on the opposite side of the quantitative chamber with the member as a boundary is connected to a first content passage portion (for example, a suction pipe 19 and a content inflow passage 20 d described later) leading to the input portion. ) Only in communication with the sky An inter-structure is provided to prevent the compressed gas from entering the space on the opposite side. (2) In the above (1), as a component of a portion other than the part of the fixed amount chamber, a second content passage portion (for example, a discharge passage 11a described later) communicating with an external space is provided. At least a stem interlocking with the object discharging operation and a housing accommodating the stem are used, a hole provided in the stem is used as the output unit, and a gap between the stem and the housing is used as the input unit (for example, A piston-like member guided on the peripheral surface of the housing is used as the response member using a groove 11c) described later.

According to the present invention, as described in (1) and (2) above, only the contents flow into the space on the side for driving the responsive member during the discharging operation, and the compressed gas does not enter. The compressed gas inside the container is prevented from leaking to the outside from between the piston and the piston, and a substantially constant gas pressure can be secured until the contents are completely used regardless of the degree of use of the aerosol mechanism.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIGS. 1A and 1B are illustrations showing an upright aerosol mechanism. FIG. 1A shows a non-use mode, and FIG. 1B shows a use mode. 2A and 2B are explanatory views showing an inverted aerosol mechanism, wherein FIG. 2A shows a non-use mode, and FIG.
Indicates a use mode.

In these figures, 1 is an upright aerosol mechanism, 2 is an inverted aerosol mechanism, 11 is a stem,
11a is a discharge passage, 11b is a hole, 11c is a groove, 11d is an outer peripheral surface, 12 is a stem rubber, 13 is a housing, 14 is an outer cylindrical portion of the housing, 14a is a piston locking stopper described below, and 15 is Inner cylindrical part of housing, 15a is convex, 15b
Is a slope, 15c is a passage, 16 is a fixed space for a fixed amount chamber between the inner cylindrical portion 15 and the stem 11, and 16a is a stem rubber.
A spring biasing to the side 12, 17 is a variable space for the fixed amount chamber between the inner cylindrical portion 15 and the outer cylindrical portion 14, 17 a is a piston for discharging contents, and 17 b is a piston 17 a for the connecting member 20 side described later. The spring 18 biases the outer cylindrical portion 14 and the inner cylindrical portion 15.
19, a suction pipe, 20 is a connecting member between the housing 13 and the suction pipe 19, 20a is a piston receiving portion, 20b is a rib,
20c is a hanging part, 20d is a content inflow path, 20e is an outer cylindrical part
Between 14 and the connecting member 20, 20f is a flange portion, 20g is a connecting member
The space between 20 and the piston 17a, 20h is a projection, 30
Is a sheath member for taking in the contents of the inverted aerosol mechanism 2, 30a is a rib formed on the inner peripheral surface, 30b is a step of the rib, 30c is a sheath member 30 for taking in the contents and the housing 13
, A space between the sheath member 30 for taking in the contents and the connecting member 20, 40 a mountain cap, 41 a container, 41a a compressed gas area, and 41b a contents Area, L
Indicates the moving distance of the piston 17a from the non-use mode to the use mode, the solid arrow indicates the flow of the contents, and the dashed arrow indicates the flow of the compressed gas.

As shown in FIG. 1, the erecting aerosol mechanism 1 controls the path of the contents from the suction pipe 19 located in the contents area 41b to the fixed space 16 for the fixed amount chamber and the variable space 17 for the fixed amount room. Divide by the rib 20b and only the content flows into the space 20g,
By moving the piston 17a, the contents in the metering chambers 16 and 17 are discharged to the outside.

The space 20e between the outer tubular portion 14 and the connecting member 20 which is located in the compressed gas area 41a is formed by a projecting portion of the connecting member 20.
Since 20h bites into the outer cylindrical portion 14 of the housing 13 and the two fit tightly, the compressed gas does not enter the space 20g or the path for discharging the contents.

The upright aerosol mechanism 1 has an outer cylindrical portion.
The housing 13 including the inner cylindrical portion 14 and the connecting member 20 formed with a rib 20b for diverting the content path is fitted to the inside of the mountain cap 40 with the stem rubber 12 interposed therebetween. .

A fixed space 16 for the fixed amount chamber is provided inside the housing 13.
And a variable space 17 for the fixed amount chamber, and a piston 17a is provided between the outer cylindrical portion 14 and the inner cylindrical portion 15. The piston 17a is a slope between the receiving portion 20a of the connecting member 20 and the inner cylindrical portion 15.
It can slide between 15b and stopper 14a.

As shown in FIG. 1 (a), in the non-use mode, the contents are removed from the passage 15 of the inner tubular portion 15 by the previous operation.
c, the fixed space 16 for the fixed amount room, and the variable space 17 for the fixed amount room.

As shown in FIG. 1B, when a push button (not shown) is pressed, the stem 11 moves downward in the figure against the bias of the spring 16a, and the convex portion 15a of the inner tubular portion 15 is moved. Abuts against the outer peripheral surface 11d of the stem 11. Accordingly, the path through which the contents enter the fixed space 16 for the fixed quantity chamber from the passage 15c of the inner cylindrical portion 15 is blocked.

On the other hand, since the hole 11b is opened from the stem rubber 12, the suction pipe 19 and the rib 20b of the connecting member 20 as shown by the solid arrows in the non-use mode stage of FIG. The piston 17a, which originally received an upward force in the figure due to the contents flowing into the space 20g through the space,
Move up against 17b.

As a result of this upward movement, the contents in the fixed space 16 for the fixed amount chamber and the variable space 17 for the fixed amount room pass through the space between the ribs 18, the hole portion 11b, and the discharge passage 11a, as indicated by the solid arrows. Is released to the outside space. The amount of the contents discharged to the outside is the movement amount L of the piston from FIG. 1 (a) to (b).
Corresponding to

At this time, the suction pipe 19 is located in the contents area 41b, and as described above, the space 20e between the outer cylindrical portion 14 of the housing 13 and the connecting member 20 is tightly sealed.
The compressed gas does not enter the space portion 20g. Therefore, the compressed gas does not leak from the space between the piston 17a and the outer cylindrical portion 14 or the inner cylindrical portion 15 to the external space through the hole 11b.

When the pressing operation of the push button is stopped, the stem 11 is returned upward in the figure by the bias of the spring 16a, and the outer peripheral surface 11d of the stem 11 is released from the convex portion 15a.

At this time, the content flowing into the space 20g from between the ribs 20b of the connecting member 20 exerts a force to push the piston 17a upward in the figure, but this force is applied from the groove 11c of the stem 11 to the variable amount for the quantitative chamber. The content flowing into the space 17 is offset by the force pressing the piston 17a downward, and the piston 17a
Is moved until it comes into contact with the receiving portion 20a by the urging force of the spring 17b, and returns to the non-use mode position in FIG.

Then, as shown by the solid line arrow, the contents are between suction pipe 19-passage 15c of inner cylindrical portion 15-groove 11c of stem 11-fixed space 16 for fixed chamber-rib 18b-fixed chamber. Flows into the variable space 17.

As shown in FIG. 2, the inverted aerosol mechanism 2 is provided with an inlet of a sheath-like member 30 for taking in the contents which moves to the opposite side to the contents inflow path 20d when the inverted.
This is to flow into the housing 13 from 30c.

When used upside down, the intake port 30c is always located in the content area 41b, and the content inflow passage 20d located in the compressed gas area 41a is provided with the sheath member 30 for taking in the content.
So that the compressed gas does not flow into the space 20g.

The difference between the inverted aerosol mechanism 2 in FIG. 2 and the upright aerosol mechanism 1 in FIG. 1 is that the contents are replaced by the suction pipe 19 flowing into the housing 13. That is, the sheath member 30 for taking in is fitted.

The sheath-like member 30 for taking in the contents can be fitted into the housing 13 or the connecting member 20 by pushing the step 30b of the rib until it comes into contact with the flange 20f on the connecting member 20 side. , These are integrated.

A rib 30a is formed on the inner peripheral surface of the sheath member 30 for taking in the contents, and the rib 30a is formed between the sheath member 30 for taking in the contents and the hanging portion 20c of the connecting member 20. Space 30d
Is formed, a content inflow passage is provided between the content taking-in port 30c and the housing 13 between the sheath member 30 for taking in the content and the housing 13.
A passage leading to 20d is formed.

In the non-use mode shown in FIG. 2A, the contents flow into the housing 13 from the contents inlet 30c, and enter the variable space 17 for the fixed amount chamber and the fixed space 16 for the fixed amount room.

As shown in FIG. 2B, in the use mode in which the push button (not shown) is pressed, the contact between the convex portion 15a of the inner cylindrical portion 15 and the outer peripheral surface d of the stem is performed as described above. The contents pressed by the compressed gas due to the opening of the hole 11b of the stem 11 from the stem rubber 12 as shown by a solid arrow indicate the intake port 30c-the sheath member for taking in the contents. Between the ribs 30a of 30-the sheath member 30 for taking in the contents and the connecting member 20
The piston 17a is pushed downward in the figure against the spring 17b through the space 30d between the hanging part 20c, the content inflow path 20d, and the rib 20b of the connecting member 20.

The contents in the variable space 17 for the fixed amount chamber and the fixed space 16 for the fixed amount room are indicated by solid arrows, as shown in FIG.
The air is discharged to the external space through the space between the ribs 18, the hole 11b, and the discharge passage 11a. In this case as well, the amount of the contents discharged to the outside is the amount of movement L of the piston from FIG.
It is.

At this time, since the intake port 30c is located in the content and the content inflow path 20d is surrounded by the sheath member 30 for taking in the content, the compressed gas does not enter the space 20g. .

When the push operation of the push button is stopped, as described above, when the stem 11 returns and the stem outer peripheral surface 11b is opened from the convex portion 15a, the contents are taken into the intake port as shown by the solid arrow. 30c-between the ribs 30a of the sheath member 30 for taking in the contents-the space 30d between the sheath member 30 for taking in the contents and the hanging part 20c-the content inflow passage 20d-the passage of the inner cylindrical portion 15 15c-
Through the path between the groove 11c of the stem 11, the fixed space 16 for the fixed amount chamber, and the rib 18, and the variable space 17 for the fixed amount room, it flows again into the fixed space 16 for the fixed amount room and the variable space 17 for the fixed amount room.

[0044]

As described above, the present invention is a driving source for discharging the contents, because the space on the side for driving the responsive member such as the piston during the discharging operation is communicated with only the contents passage. Compressed gas does not enter this space and leak from it to the external space. Irrespective of the degree of use of the aerosol mechanism, it is possible to prevent the pressure of the compressed gas inside the container from dropping and to stabilize the discharge operation of the contents.

[Brief description of the drawings]

FIG. 1 is an illustration showing an upright aerosol mechanism of the present invention. FIG. 7A is an explanatory diagram illustrating a non-use mode, and FIG.

FIG. 2 is an explanatory view showing an inverted aerosol mechanism of the present invention. FIG. 7A is an explanatory diagram illustrating a non-use mode, and FIG.

FIG. 3 is an explanatory diagram showing a non-use mode of a conventional aerosol mechanism.

FIG. 4 is an explanatory diagram showing a conventional use mode of an aerosol mechanism.

[Description of Signs] 1: Upright aerosol mechanism 2: Inverted aerosol mechanism 11: Stem 11a: Release passageway 11b: Hole 11c: Groove 11d: Outer peripheral surface 12: Stem rubber 13: Housing 14: Outer cylindrical part 14a: Stopper for locking the piston 15: Inner cylindrical part 15a: Convex part 15b: Slope 15c: Passage 16: Fixed space for fixed amount room 16a: Spring 17: Variable space for fixed amount room 17a: Piston for releasing contents 17b: Spring 18: Rib 19: Suction pipe 20: Connecting member 20a: Piston receiving part 20b: Rib 20c: Hanging part 20d: Contents inflow path 20e: Between outer cylindrical part 14 and connecting member 20 20f: Flange part 20g : Space portion 20h: Protrusion 30: Sheath member for taking in contents 30a: Rib 30b: Step of rib 30c: Contents taking-in port 30d: Space 40: Mountain cap 41: Container 41a: Compressed gas area 41b : Content area L: Distance of movement of piston from non-use mode to use mode

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E014 PA01 PB01 PB08 PD01 PE02 PE06 PE08 PF10 4F033 RA02 RB04 RC04 RC05 RC07 RC08

Claims (2)

[Claims] 1. An operation for discharging the contents sets an output section on the external space side of the metering chamber from an earlier closed state to an open state, and sets an input section on the inner side of the container from the previous open state to a closed state. , And under this setting, the response member constituting a part of the quantification chamber moves based on the action of the compressed gas put into the container to thereby move the contents of the quantification chamber from the output unit. In the aerosol mechanism for discharging into the external space, a space structure in which a space portion on the opposite side to the fixed amount chamber with the reaction member as a boundary communicates only with the first content passage portion leading to the input portion. An aerosol mechanism wherein the compressed gas is prevented from entering the space on the opposite side. 2. A stem having a second content passage communicating with an external space and interlocking with a content discharging operation as a constituent element of a portion other than the part of the fixed amount chamber, and accommodating the stem. A hole provided in the stem is used as the output unit, a gap between the stem and the housing is used as the input unit, and the response member is guided to a peripheral surface of the housing. The aerosol mechanism according to claim 1, wherein a piston-shaped member is used.