JP2013180802A - Reverse fixed quantity jet mechanism for aerosol container and aerosol type product with the reverse fixed quantity jet mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make rotating operation reliable and convenient in a reverse fixed quantity jetting mechanism of an aerosol type product by a guiding action for a jetting operation part by rotating the jetting operation part in a way different from a regular operation for reverse fixed quantity jetting, thereby setting it in a position inhibiting reverse fixed quantity jetting.SOLUTION: A jetting button 6 has a suspending portion 6j configured to hinder movement in the direction of jetting operation. A cylindrical cover 7 attached to a container body 1 has a vertical recess 7a, a circumferential step 7b, and an inclined face 7c with respect to the vertical suspending portion 6j. In an immovable mode shown in the figure, the suspending portion 6j is guided by the vertical recessed portion 7a, thus allowing reverse fixed quantity jetting operation for pressing the operation button 6 downward. When the operation button 6 is rotated from an immovable mode position, the lower end of the suspending portion 6j is guided upward along the inclined face 7c, and moved to the circumferential step 7b beyond it, thereby shifted to a reverse fixed quantity jetting operation inhibition mode. Even if the operation button 6 is pressed downward in this state, its lower end immediately contacts with the circumferential step.

Description

The present invention relates to a reverse quantitative injection mechanism used for aerosol type products.
In particular, the injection operation part in the reverse quantitative injection mechanism, that is, the injection operation part movable in principle in the reverse quantitative injection operation with respect to the stem side that acts as an inflow valve of the fixed quantity injection chamber, the blocking mode of the reverse quantitative injection operation The present invention relates to a reverse quantitative injection mechanism that can be set to a position.

In addition, the “reverse quantitative injection mechanism” in this specification means
(11) The stem inflow valve (= inflow valve to the metering chamber) opens when the injection operation part of the aerosol type product is pushed down from the stationary mode position, for example, and the outflow valve on the injection operation part side from the inflow valve The contents flow into the quantitative chamber until
(12) The stem inflow valve closes and the outflow valve opens along with the subsequent release of the push-down operation, so that the contents that have already flowed into the metering chamber during the push-down operation are moved to the external space by the action of the propellant therein. Spray,
This is a quantitative content injection mechanism.

  That is, the contents on the container body side flow into the metering chamber with the start of the reverse metering operation of the spraying operation unit, and the metering chamber contents are ejected into the external space area by the subsequent cancellation of the reverse metering operation.

  In this reverse injection type aerosol type product, a liquefied gas (hereinafter referred to as “injection gas” if necessary) is used as a propellant, and so-called a mixture (dissolved material) of this liquefied gas and the injection target. Is injected into the external space.

  In the present specification, the “injection object + propellant” thus injected from the metering chamber to the external space area is referred to as “content”.

The reverse quantitative injection mechanism itself is a well-known technique.
The applicant of the present application proposes a reverse quantitative injection mechanism in which the content continuous injection mode can be set as an example of improvement and application of such a reverse quantitative injection mechanism (see Patent Document 1).

  Similarly, even if the coil spring used to bias the injection operation unit, which is a component of the metering chamber output valve, to the output valve open state is omitted, when the stem returns to the stationary mode, Verify that the outflow valve is in the “open” state with the pressure of the contents already flowing into it, that is, verify that the inflow contents into the metering chamber are reliably injected into the external space, and reverse quantification of the configuration based on this An injection mechanism and the like have been proposed and patented (see Patent Document 2).

JP 2008-262743 A JP 2007-204138 A

  In the present invention, as a further improvement example and application example of such a reverse quantitative injection mechanism, by rotating the injection operation unit in a direction different from the normal reverse quantitative injection operation, the injection operation unit can perform the reverse quantitative determination. An object of the present invention is to provide a reverse quantitative injection mechanism that is set to a blocking mode position of an injection operation to prevent malfunction of reverse quantitative injection of an aerosol container.

  In addition, by forming a slope for guiding the injection operation unit in the initial stage of the rotation operation, and allowing the injection operation unit to be guided and moved to the reverse quantitative injection operation inhibition mode position, The purpose of this is to ensure the rotation operation of the injection operation section and to make it more convenient.

The present invention solves the above problems by the following continuous injection mechanism.
(1) An annular portion (for example, described later), which is a target of an inverse quantitative injection operation for a fixed volume chamber (for example, fixed volume chamber A described later) of the aerosol container and acts as an outflow valve (for example, a flow valve v2 described later) An injection operation portion (for example, an injection button 6 described later) in which an annular edge portion 6m) is formed;
Acts as an inflow valve (for example, an inflow valve v1 described later) of the metering chamber and has an upstream quantification chamber space region (for example, a passage region 4a described later), and at least the inflow in a form corresponding to the reverse metering injection operation A content passage stem (for example, stem 4 to be described later) that moves between a stationary mode position with the valve closed and a metering chamber inflow mode position with the inflow valve open and the outflow valve closed; ,
A surface portion acting as the outflow valve, having a midstream quantification chamber space region (for example, an internal space region of a valve seat portion 5 described later) following the output side in a state attached to the output side of the stem. A formed valve seat (for example, a valve seat 5 described later);
A cylindrical cover body (for example, a cover body 7 described later) attached to the container body side (for example, a container body 1 described later) of the aerosol container,
The injection operation unit is
A downstream quantification chamber space region (for example, a space region defined by an injection button intermediate member 6b, an injection button lower member 6c, and a valve seat portion 5 described later) following the middle flow quantification chamber space region is set, and the stationary mode The cover body includes a reverse quantitative injection operation that moves between the position and the fixed-quantity chamber inflow mode position, and a rotation operation that rotates between the stationary mode position and the reverse quantitative injection operation blocking mode position. Engaging the valve seat in a possible manner,
Each of the injection operation unit and the cover body is
In the opposite part in the movement direction of the injection operation part with the reverse quantitative injection operation,
An injection operation unit for individually permitting the reverse quantitative injection operation and the rotation operation and for preventing the injection operation unit rotated to the blocking mode position from moving to the quantitative chamber inflow mode position A side movement setting portion (for example, a hanging piece portion 6j described later) and a cover body side movement setting portion (for example, a vertical concave portion 7a, a circumferential step portion 7b, and a slope 7c described later),
An aerosol container reverse metering mechanism is used.
(2) In (1) above,
The injection operation unit side movement setting part is
It is a longitudinal piece formed in the cylindrical part of the injection operation part,
The cover body side movement setting part is
Formed on the upper peripheral surface of the cover body,
A longitudinal concave portion that guides the longitudinal piece during the reverse quantitative injection operation;
A circumferential direction having a height corresponding to the lower end of the vertical piece at the stationary mode position, connected to the vertical concave portion, and facing the lower end portion of the vertical piece at the blocking mode position A step portion,
An aerosol container reverse metering mechanism is used.
(3) In (2) above,
The cover body side movement setting part is
Between the vertical concave portion and the circumferential stepped portion, an upward slope extending in the horizontal direction from a predetermined portion of the vertical concave portion corresponding to the lower end of the vertical piece at the stationary mode position is provided. ,
An aerosol container reverse metering mechanism is used.
(4) In the above (1), (2), (3),
The injection operation unit is
An upper operation main body (for example, an injection button main body 6a described later) having an operation target surface;
An operation intermediate member (for example, an injection button intermediate member 6b described later) having the annular portion as the outflow valve while being fitted to the operation main body portion and defining the downstream quantitative chamber space region;
A lower member for operation (for example, an injection button lower member 6c described later) which is fitted to the intermediate member for operation and defines the space region of the downstream quantitative chamber and has a sealing portion with the valve seat. And comprising
The intermediate member for operation, the lower member for operation, and the valve seat portion are:
As a whole, it is set in the form of a unit structure for the operation main body and the stem.
An aerosol container reverse metering mechanism is used.

  The present invention is directed to a reverse quantitative injection mechanism having such a configuration and an aerosol type product including the reverse quantitative injection mechanism.

  In the present invention, the reverse quantitative injection mechanism is configured such that the injection operation unit is set to the blocking mode position of the reverse quantitative injection operation by rotating the injection operation unit in a direction different from the normal reverse quantitative injection operation. Therefore, it is possible to prevent malfunction of reverse quantitative injection.

  In addition, a slope for guiding the injection operation unit in the initial stage of the rotation operation is formed so that the injection operation unit can be guided to move to the reverse quantitative injection operation inhibition mode position. The injection operation unit can be reliably rotated and made more convenient.

  In the case of the reverse quantitative injection mechanism, unlike the aerosol injection mechanism other than the reverse quantitative type, the injection operation unit originally moves, for example, in the vertical direction with respect to the stem side. It can be said that it paid attention to the principle of operation peculiar to the reverse quantitative injection mechanism.

  In other words, if the injection operation unit collides with the guide portion during reverse quantitative injection operation at the initial stage of the rotation operation for reverse quantitative injection prevention, and the rotation operation is not successful, the user can lift the injection operation unit slightly. Thus, the rotation operation in that state can be continued.

  Such an advantage that the rotation operation can be continued cannot be expected in an aerosol injection mechanism other than the reverse quantitative type in which the injection operation unit and the stem side are integrally coupled and interlocked. For example, if the injection operation part is forcibly lifted, it will come off from the stem side.

It is explanatory drawing which shows the stationary mode (a reverse fixed quantity injection operation is possible) of a reverse fixed quantity injection mechanism. It is explanatory drawing which shows the fixed_quantity | quantitative_assay chamber inflow mode of the state which the stem moved down by pushing-down operation of the injection button, the inflow valve of the fixed_quantity | quantitative_assay chamber opened, and the outflow valve closed. It is explanatory drawing which shows the reverse fixed_quantity | quantitative_assay mode of the state which the injection button and the stem moved up with cancellation | release of pushing-down operation of FIG. 2, the inflow valve of a fixed_quantity | quantitative_assay chamber closed, and the outflow valve opened. It is explanatory drawing which shows the reverse fixed quantity injection operation prevention mode of the state which rotated the injection button of the stationary mode position of FIG. 1 with respect to the cover body, and set to the position which cannot be pushed down. It is explanatory drawing which shows each perspective state of an injection button and a cover body.

  The form for implementing this invention is demonstrated using FIG. 1 thru | or FIG.

  The present invention can be applied to both the above-described reverse quantitative injection mechanism having the coil spring for biasing the injection operation unit and the reverse quantitative injection mechanism having the coil spring omitted. In the following description using the drawings, for the sake of convenience of explanation, a coil spring omission type reverse quantitative injection mechanism is targeted.

  When the user presses the “static mode” injection button in FIG. 1 downward, the stem moves downward to open the inflow valve to the metering chamber, and the mode shifts to the metering chamber inflow mode in FIG. That is, the contents (the injection target and the injection gas) flow from the container body into the fixed quantity chamber in the outflow valve closed state.

  When the user releases the push-down operation (reverse quantitative injection operation) of the injection button, the stem and the injection button are returned to their original positions by the action of a well-known stem energizing coil spring (not shown). The inflow valve closes.

  Based on the release of the pressing operation, the process proceeds to the reverse quantitative injection mode of FIG. That is, the outflow valve is opened by the action of the injection gas (liquefied gas) that has already flowed into the metering chamber in the closed state of the inflow valve, and the injection target that has already flowed in is injected into the external space through the outflow valve. .

  The components of the following reference numbers with alphabets (for example, the annular opening end 1a) are in principle shown to be a part of the components (for example, the container body 1) of the numeral portions of the reference numbers.

1-4,
A is a quantitative chamber (see FIGS. 1 to 4),
B is a flow of contents flowing from the container body into the quantification chamber A (see FIG. 2),
C is a flow of contents that flow out of the quantification chamber A and are injected into the external space (see FIG. 3),
D is a rotation operation direction of the injection button when setting the reverse quantitative injection operation prevention mode (clockwise when viewed from the upper side in the figure: see FIG. 4),
v1 is the inlet valve of the metering chamber,
v2 is the outflow valve of the metering chamber,
Respectively.

1 to 5,
1 is a well-known container body for aerosol products containing the contents,
1a is the annular opening end of the container body,
2 is a known mounting cap fixed to the annular opening end 1a;
2a is a well-known annular concave portion (undercut) generated on the lower end side of the outer edge of the mounting cap,
3 is a known housing attached to the central portion of the mounting cap 2;
The lower part 4 is disposed inside the housing 3 and is urged upward in the figure by the elastic action of a well-known coil spring (not shown) to perform the valve action (= inflow valve action of the metering chamber A). Known stems to present,
4a is the passage area of the contents (upper quantification chamber space area),
4b is a lateral hole portion that acts as an inflow valve of the metering chamber A together with a well-known stem gasket (not shown),
Respectively.

Also,
5 is tightly fitted to the outer peripheral surface of the output side of the stem 4 and interlocks the stem in the vertical direction in the figure, exhibits a valve action (= outflow valve action of the metering chamber A) together with an injection button 6 described later, and the stem 4 A sheath-like valve seat with a quantification chamber A (medium quantitation chamber space area) following the output side of
5a is a central frustoconical part having a surface part that acts as an outflow valve of the metering chamber A,
5b is a plurality of holes formed on the peripheral surface portion of the valve seat portion, each acting as an internal / external communication portion of the contents,
5c is an outer portion of the hole portion 5b, and an annular reverse skirt portion that comes into contact with a small-diameter inner peripheral surface portion 6q of a later-described injection button 6 and exhibits a sealing action,
5d is an upper ring convex portion formed on the lower end side of the outer peripheral surface of the valve seat portion,
Respectively.

Also,
6 is an injection button (injection) that moves up and down with respect to the valve seat 5 and rotates about the vertical center line of the housing 3 and the like and acts as the outflow valve v2 of the metering chamber A together with the valve seat 5 Operation part),
6a is a component of the injection button, and an upper sheath-like (lid-like) injection button main body (operation main body) having an operation target surface;
6b is a component of the injection button, and is a cylindrical injection button intermediate member (operational intermediate member) that fits into the injection button main body 6a and delimits the quantitative chamber A (downstream quantitative chamber space). ,
6c is a component of the injection button, and is a tubular injection button lower member (lower side for operation) which is fitted to the injection button intermediate member 6b and defines the fixed amount chamber A (downstream fixed amount chamber space region). Element),
6d is an upper inner cylindrical portion that is formed at the center of the lower surface of the injection button main body 6a and fits with the injection button intermediate member 6b;
6e is a content passage area that is formed inside the injection button body 6a and continues from the outlet of the upper inner cylindrical section 6d to the injection opening to the external space area,
6f is an upper outer cylindrical portion formed on the lower outer portion of the injection button main body 6a,
6g is a total of four radial rib portions set between the outer peripheral surface of the upper inner cylindrical portion 6d and the inner peripheral surface of the upper outer cylindrical portion 6f;
6h is a notch-like part formed on the lower end side of the rib-like part 6g to allow the injection button to move downward from the stationary mode position to the metering chamber inflow mode position;
6j is a drooping piece (vertical piece) which is continuously formed from the outer end portion of the notch 6h to the inner peripheral surface of the upper outer cylindrical portion 6f and exhibits a blocking action for the reverse quantitative injection operation,
6k is a component of the injection button intermediate member 6b, which is a central cylindrical part that fits with the upper inner cylindrical part 6d of the injection button main body part 6a,
6m is a lower end portion of the central cylindrical portion 6k, and an annular edge portion (annular portion acting as an outflow valve) acting as an outflow valve between the valve seat portion 5 and the truncated cone portion 5a,
6n is a downward annular groove formed on the outer end side of the circular lower surface of the injection button intermediate member 6b,
6p is a lower inner cylindrical portion as a component of the lower part 6c of the injection button,
6q is an upper inner peripheral surface portion of the lower inner cylindrical portion 6p, and a small-diameter inner peripheral surface portion (seal acting portion) that exhibits a sealing action with the reverse skirt portion 5c of the valve seat portion 5;
6r is an inner peripheral surface portion on the lower end side of the lower inner cylindrical portion 6p, and prevents the injection button from coming off from the valve seat portion by engaging with the upper ring convex portion 5d of the valve seat portion 5. Lower ring convex for,
6s is a component of the injection button lower member 6c, the upper end side is fitted with the downward annular groove portion 6n of the injection button intermediate member 6b, and the lower end side is continuously connected to the lower inner cylindrical portion 6p. Lower outer cylindrical part that defines the downstream quantitative chamber space area)
Respectively.

Also,
Reference numeral 7 denotes a cylindrical body that is firmly fitted to the annular concave portion 2a of the mounting cap 2 and is attached so as not to rotate between the mounting cap 2 and the stationary mode position of the injection button 6 and the flow into the metering chamber. It has a function that enables vertical movement between the mode position and rotation from the stationary mode position to the blocking mode position of the reverse quantitative injection operation, and prevents downward movement of the injection button 6 after the rotation. Cover body,
7a is formed on the outer peripheral surface of the upper end side of the cover body, and a total of four vertical directions for guiding the vertical movement between the stationary mode position and the metering chamber inflow mode position of the hanging piece 6j of the injection button 6 respectively. Concave part,
7b extends in the horizontal direction from a predetermined portion in the vertical direction of the vertical concave portion 7a (the lower end portion of the hanging piece portion 6j in FIG. 4; the upper portion corresponding to the lower end portion of the hanging piece portion in the stationary mode position in FIG. 1). The drooping piece 6j is allowed to move from the stationary mode position to the reverse quantitative injection operation inhibition mode position by the relative rotation operation between the button 6 and the cover body, and the drooping piece after the movement is allowed. A stepped portion acting as a downward movement-preventing facing surface to 6j, and a circumferential stepped portion having substantially the same height across its entire width;
7c is a transition portion between the vertical concave portion 7a and the circumferential step portion 7b, and an inclined surface (up slope) that increases from the vertical concave portion toward the circumferential step portion,
7d is an upright peripheral wall on the inner side of the vertical concave portion 7a and the circumferential step portion 7b,
7e is formed on the inner peripheral surface portion of the lower end side of the cover body, and has a total of four convex portions that fit into the annular concave portion 2a of the mounting cap 2.
Respectively.

  Here, the metering chamber A is a closed space region from the inflow valve v1 to the outflow valve v2, that is, “lateral hole portion 4b (inflow valve) —passage region 4a—inner space region of the valve seat portion 5—hole portion 5b—injection button. Inner space region of the intermediate member 6b and the injection button lower member 6c—the space region of the frustoconical portion 5a and the contact portion of the annular edge portion 6m (outflow valve v2) ”.

  The whole of the injection button intermediate member 6b, the injection button lower member 6c, and the valve seat portion 5 is set in the form of a unit structure for the injection button main body portion 6a and the stem 4.

  By using this unit structure, existing corresponding parts can be used as the stem 4 and the injection button main body 6a.

  The housing 3, the stem 4, the valve seat 5, the injection button 6, the cover body 7, and the like are made of plastic made of polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like. The container body 1 and the mounting cap 2 are made of metal.

As described above, in the case of the illustrated reverse quantitative injection mechanism which is a premise of the present invention,
(21) By pressing down the injection button 6 in the stationary mode (inflow valve v1: closed, outflow valve v2: closed) position in FIG. 1, the metering chamber inflow mode (inflow valve: open, outflow valve: closed) in FIG. )
(22) In this metering chamber inflow mode, the contents of the container body flow into the metering chamber A,
(23) With the release operation of the injection button 6, the reverse quantitative injection mode (inflow valve: closed, outflow valve: open) shown in FIG.
(24) In this reverse quantitative injection mode, the contents that have already flowed into the quantitative chamber A in (2) above are injected into the external space.

  In the stationary mode of FIG. 1, the stem 4 and the valve seat 5 integrated therewith are stopped at the uppermost position by the elastic action of a known coil spring (not shown).

  At this time, the injection button 6 comes into contact with the inner peripheral surface of the lower inner cylindrical portion 6p, such as the reverse skirt portion 5c of the valve seat portion 5 and the upper ring convex portion 5d, and after the end of the previous reverse quantitative injection, By moving downward due to its own weight, the annular edge portion 6m stops in a state where the annular edge portion 6m is in contact with the truncated cone portion 5a of the valve seat portion 5 (= outflow valve closed state).

  In addition, relative rotation operation (rotation operation from the stationary mode position to the reverse quantitative injection operation blocking mode position) between the injection button 6 and the cover body 7 is possible.

  To shift from the stationary mode of FIG. 1 to the reverse quantitative injection operation blocking mode of FIG. 4, the injection button 6 of FIG. 1 is rotated with respect to the cover body 7, the valve seat portion 5, the stem 4, etc. The drooping piece 6j of the spray button may be opposed to the circumferential step 7b of the cover body 7 so that the pressing operation of the spray button is prevented by the circumferential step.

  When the injection button 6 is rotated, the stem 4 and the valve seat 5 which are separate from the injection button are not interlocked. That is, the user can rotate only the injection button 6 and the operation force can be reduced.

When the injection button 6 in the stationary mode position in FIG. 1 is rotated to the state in FIG. 4, the lower end portion of the hanging piece 6 j is immediately guided upwardly by the inclined surface 7 c of the cover body 7, and the circumferential direction ahead. It moves toward the step 7b.

  Eventually, the lower end portion of the hanging piece 6j of the injection button 6 and the circumferential step 7b of the cover body 7 are brought into a locked state in which they face each other.

  Due to the locking action of the drooping piece 6j and the circumferential step 7b, the injection button 6 in the reverse quantitative injection operation blocking mode of FIG. 4 does not move down even if it is inadvertently pressed. That is, the injection button 6 in FIG. 4 at the position after the rotation operation is not shifted to the fixed-quantity chamber inflow mode position in FIG.

  The present invention can also be applied to a well-known reverse quantitative injection mechanism that positively urges the injection button 6 in the upward direction by an elastic action such as a coil spring (different from that for urging the stem).

  In the case of such a reverse quantitative injection mechanism in which the injection button 6 is urged upward, the injection button moves upward with respect to the valve seat portion 5 when the reverse quantitative injection operation (pressing operation) is released.

  That is, the annular edge portion 6m of the injection button intermediate member 6b (center tubular portion 6k) is separated from the truncated cone portion 5a of the valve seat portion 5, and the outflow valve v2 is positively set to the open state. This outflow valve open state continues even in the stationary mode after completion of the content injection in the metering chamber A.

  In the case of the reverse metering injection mechanism in which the outflow valve open state is ensured in the stationary mode, the cover body 7 is omitted from the inclined surface 7c, and the longitudinal concave portion 7a and the circumferential step portion 7b are directly adjacent to each other. It may be structured.

  In the case of the reverse quantitative injection mechanism shown in the figure, the same cover body structure, for example, a cover body structure in which the height position of the circumferential step 7b is set at a substantially lower end portion (a portion slightly below the lower end portion) of the inclined surface 7c. Can be used.

  The reverse quantitative injection mechanism is not a structure in which the injection button 6 is integrally interlocked with the stem side (the stem 4 and the valve seat portion 5 integrated therewith) due to its operating principle.

  Therefore, at the initial stage of rotating the injection button 6 in the stationary mode position to the blocking mode position of the reverse quantitative injection operation, the lower end side portion of the hanging piece portion 6j of the injection button 6 is the vertical concave portion 7a of the cover body 7 ( When the user hits the vertical side surface (adjacent to the slope 7c), the user lifts the injection button 6 slightly and the lower end portion of the hanging piece 6j is the slope 7c (or the circumferential step 7b when the slope is omitted). The rotation operation may be continued after being positioned above the lower end portion.

  When the injection button 6 is pushed down in the stationary mode of FIG. 1 (inflow valve: closed, outflow valve: closed), the metering chamber inflow mode of FIG. 2 is entered.

At this time,
(31) In the closed state of the outflow valve, the injection button 6, the valve seat 5 and the stem 4 move downward together, and the stem gasket and the side hole 4b are deformed by the deformation action of a well-known stem gasket (not shown). The sealing action is released, that is, the inflow valve v1 is displaced to the open state,
(32) By setting the inflow valve open state, the contents of the container body 1 flows into the metering chamber A through the housing 3 and the lateral hole 4b.

  And if a user cancels | releases pushing-down operation of the injection button 6 in the fixed_quantity | quantitative_assay chamber inflow mode of FIG. 2, it will transfer to the reverse fixed_quantity | quantitative_quantity injection mode of FIG.

At this time,
(41) The integral part of the valve seat part 5 and the stem 4 which has been subjected to the pressing operation force through the closed outflow valve v2 until then is moved upward by the elastic action of a known coil spring, and the known stem It returns to the sealing state (closed state of the inflow valve v1) between the gasket and the lateral hole portion 4b,
(42) The state in which the injection button 6 is moved up with respect to the valve seat portion 4 by the pressure action of the propellant (liquefied gas) that has already flowed into the metering chamber A in the metering chamber inflow mode of FIG. Transition to the open state of the outflow valve v2,
(43) The contents that have already flowed into the metering chamber A are jetted into the external space area through the outflow valve v2 and the contents passage area 6e of the injection button main body 6a.

  In the reverse quantitative injection mode of FIG. 3, when the content that has already flowed into the quantitative chamber A is injected into a substantially external space region and the content pressure in the quantitative chamber disappears, the injection button 6 moves downward with its own weight. It moves to the position of 1 still mode.

  In the reverse quantitative injection mode of FIG. 3, the injection button 6 is moved up with respect to the valve seat portion 5 by the pressure of the propellant that has already flowed into the quantitative chamber A, as illustrated on the ceiling surface portion of the injection button intermediate member 6b. This is because the upward pressure of the propellant (liquefied gas) acts.

In order to secure each operation of the metering chamber inflow mode of FIG. 2 and the reverse metering injection mode of FIG. 3, regarding the pressure of the inflowing propellant to the metering chamber A,
(51) In the metering chamber inflow mode, the load acting on the stem 4 and the valve seat 5 in the downward direction (based on the pressure) is the upward direction of a well-known coil spring for biasing the stem (not shown). Less than 2.0kgf, for example,
(52) In the reverse quantitative injection mode, the load acting on the injection button 6 in the upward direction (based on the pressure) is caused by the weight of the injection button, the reverse skirt portion 5c, and the upper ring convex portion 5d. Greater than the resultant force of the frictional force between the inner peripheral surface of the lower inner cylindrical portion 6p,
It is necessary.

  For example, if the above requirement (21) is not satisfied, the valve seat 5 and the injection button 6 move in a direction away from each other by the action of the pressure of the inflow contents into the metering chamber A. This is because the valve seat portion 5 moves downward from the position shown in FIG. 2 and the outflow valve v2 opens to enter a normal injection state.

  The load based on the pressure of the contents flowing into the quantification chamber A is set to (0.3 to 1.5) kgf, for example. However, this numerical value is merely an example, and it is needless to say that it can be set to any value that satisfies the requirements (21) and (22).

Further, the present invention is not limited to the above-described embodiment. For example,
(61) The longitudinal concave portion 7a, the circumferential step portion 7b, and the inclined surface 7c are formed on the inner circumferential surface side of the cover body 7,
(62) The hanging piece portion 6j and the like are formed on the cover body side, and the vertical concave portion 7a, the circumferential step portion 7b and the inclined surface 7c are formed on the injection button side.
(63) Apply to reverse quantitative injection mechanism with various injection operation parts such as tilt type and lever type,
You may do it.

  Aerosol products to which the present invention is applied include deodorants, cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair restorers, cosmetics, There are various uses such as shaving foams, foods, liquid drops (vitamins, etc.), pharmaceuticals, quasi drugs, paints, horticultural agents, repellents (insecticides), cleaners, laundry pastes, lubricants, etc. .

  The contents stored in the container body can be used in various forms such as liquid, cream, gel, foam (foam), etc. Examples include oil components, alcohols, surfactants, polymer compounds, active ingredients according to each application, and water.

  As the powder, metal salt powder, inorganic powder, resin powder, or the like is used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose, and a mixture thereof are used.

  As the oil component, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid and the like are used.

  Examples of the alcohol include monovalent lower alcohols such as ethanol, monovalent higher alcohols such as lauryl alcohol, and polyhydric alcohols such as ethylene glycol, glycerin, and 1,3-butylene glycol.

  Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and cations such as alkyltrimethylammonium chloride. A surfactant is used.

  As the polymer compound, methyl cellulose, gelatin, starch, casein, hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer, or the like is used.

  Active ingredients according to each application include anti-inflammatory analgesics such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, insect repellents such as Hillesroid and diethyltoluamide, antiperspirants such as zinc oxide, Softeners such as camphor and menthol, anti-asthma drugs such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, adhesives and paints such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, dihydrogen phosphate Use a fire extinguishing agent such as ammonium or sodium bicarbonate.

  Further, other than the above-mentioned contents, suspending agents, ultraviolet absorbers, emulsifiers, humectants, antioxidants, sequestering agents, etc. can be used.

  As the propellant in the aerosol type product, liquefied gas such as liquefied petroleum gas, dimethyl ether and fluorocarbon is used.

A: Determination chamber B: Flow of contents flowing into the determination chamber A from the container body (see FIG. 2)
C: Flow of contents that flow out of the quantitative chamber A and are injected into the external space (see FIG. 3)
D: Direction of operation for rotating the injection button when setting the reverse quantitative injection operation prevention mode (see FIG. 4)
v1: Inflow valve in metering chamber A v2: Outlet valve in metering chamber A

1: container main body 1a: annular opening end portion 2: mounting cap 2a: annular concave portion (undercut)
3: Housing 4: Stem 4a: Passage area of contents (upper quantification chamber space area)
4b: Horizontal hole (inflow valve)

5: Valve seat part 5a: truncated cone part 5b: hole part 5c: reverse skirt part 5d: upper ring convex part

6: Injection button (injection operation unit)
6a: injection button main body (operation main body)
6b: injection button intermediate member (operation intermediate member)
6c: Lower member of the injection button (lower member for operation)
6d: Upper inner cylindrical part 6e: Contents passage area 6f: Upper outer cylindrical part 6g: Rib-like part 6h: Notch part 6j: Drooping piece (vertical piece)
6k: Central cylindrical portion 6m: An annular edge portion (outflow valve)
6n: Downward ring groove portion 6p: Lower inner cylindrical portion 6q: Small diameter inner peripheral surface portion (sealing portion)
6r: Lower ring convex portion 6s: Lower outer cylindrical portion

7: Cover body 7a: Vertical concave portion 7b: Circumferential step portion 7c: Slope (up slope)
7d: Standing peripheral wall 7e: Convex portion

Claims (5)

An injection operation unit that is a target of an inverse quantitative injection operation for a fixed-quantity chamber of an aerosol container and in which an annular portion that acts as an outflow valve of the fixed-quantity chamber is formed;
Acts as an inflow valve for the metering chamber and has an upstream metering chamber space, and in response to the reverse metering injection operation, at least a stationary mode position with the inflow valve closed, and the inflow valve open A stem for passing the contents moving between the metering chamber inflow mode position with the outflow valve closed,
A valve seat portion having a middle flow rate determination chamber space area following the output side, and a surface portion acting as the outflow valve formed in a state attached to the output side of the stem;
A cylindrical cover body attached to the container body side of the aerosol container,
The injection operation unit is
The reverse quantitative injection operation for setting the downstream quantitative chamber space area following the middle flow quantitative chamber space area and moving between the stationary mode position and the quantitative chamber inflow mode position, and the stationary mode position and the inverse quantitative quantity Engage with the valve seat part in such a manner that a rotation operation rotating between the blocking mode positions of the injection operation is possible with respect to the cover body,
Each of the injection operation unit and the cover body is
In the opposite part in the movement direction of the injection operation part with the reverse quantitative injection operation,
An injection operation unit for individually permitting the reverse quantitative injection operation and the rotation operation and for preventing the injection operation unit rotated to the blocking mode position from moving to the quantitative chamber inflow mode position A side movement setting portion and a cover body side movement setting portion,
A reverse quantitative injection mechanism for an aerosol container. The injection operation unit side movement setting part is
It is a longitudinal piece formed in the cylindrical part of the injection operation part,
The cover body side movement setting part is
Formed on the upper peripheral surface of the cover body,
A longitudinal concave portion that guides the longitudinal piece during the reverse quantitative injection operation;
A circumferential direction having a height corresponding to the lower end of the vertical piece at the stationary mode position, connected to the vertical concave portion, and facing the lower end portion of the vertical piece at the blocking mode position A step portion,
The reverse quantitative injection mechanism of an aerosol container according to claim 1. The cover body side movement setting part is
Between the vertical concave portion and the circumferential stepped portion, an upward slope extending in the horizontal direction from a predetermined portion of the vertical concave portion corresponding to the lower end of the vertical piece at the stationary mode position is provided. ,
The reverse quantitative injection mechanism for an aerosol container according to claim 2. The injection operation unit is
An upper operation body having an operation target surface;
An intermediate member for operation having the annular portion as the outflow valve while being fitted to the operation main body portion and defining the downstream quantitative chamber space region;
A lower member for operation that is fitted to the intermediate member for operation, defines a space area of the downstream quantitative chamber, and is formed with a sealing action portion with the valve seat portion,
The intermediate member for operation, the lower member for operation, and the valve seat portion are:
As a whole, it is set in the form of a unit structure for the operation main body and the stem.
The reverse quantitative injection mechanism for an aerosol container according to any one of claims 1 to 3. The reverse quantitative injection mechanism according to any one of claims 1 to 4 is provided, and the liquefied gas for injection and the injection object are accommodated.
Aerosol type product characterized by that.

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