WO1999030986A1

WO1999030986A1 - Method and structure for injecting aerosol

Info

Publication number: WO1999030986A1
Application number: PCT/JP1998/005671
Authority: WO
Inventors: Ken-Ichi Suzuki; Takako Okajima; Fuminori Kimura
Original assignee: Taisho Pharmaceutical Co., Ltd.
Priority date: 1997-12-16
Filing date: 1998-12-16
Publication date: 1999-06-24
Also published as: AU1681899A

Abstract

A method and a structure for injecting aerosol capable of measuring a predetermined quantity of content of an aerosol container, dividing the measured predetermined quantity of the content into a plurality of predetermined quantity of portions, and injecting the resultant portions uniformly, the method comprising a first step of filling a measuring chamber (2), which closably communicates with both an injection section (31) and the interior of an aerosol container (1), with the content of the aerosol container (1), a second step of cutting off the communication between the measuring chamber (2) and aerosol container (1), and a third step of injecting a predetermined quantity at least twice out of the content of the measuring chamber (2) from the injection section (31), i.e., the content of the measuring chamber (2) taken from the aerosol container (1) in a volume equal to that of the measuring chamber (2) being injected from a second measuring chamber (22) via the injection section (31) as the content is measured in smaller quantity at a time by the second measuring chamber (22).

Description

Specification

Aerosol injection method and aerosol injection structure

The present invention relates to an aerosol injection method and an aerosol injection structure, and more specifically, is devised so that contents in an aerosol container can be measured and the measured contents can be further subdivided and jetted. The present invention also relates to an aerosol injection method and an aerosol injection structure.

Background art

For aerosols used as pharmaceuticals, it is not unusual in many cases that it is preferable to use a predetermined amount for a single use due to the nature of the aerosol, which is filled with an asthma drug or the like.

In the conventional aerosol injection method and injection structure for injecting the aerosol in predetermined amounts, the predetermined amount of the contents measured by the measuring means from the aerosol container is all injected by one operation of the injection valve. It is composed of

In this type of aerosol injection structure, for example, when the aerosol is a topical drug, it is necessary to inject a predetermined amount of the content over a relatively wide range as uniformly as possible.

However, in the above-mentioned conventional aerosol injection method or injection structure, since the entire amount of the measured contents is injected in one injection operation, the medicine is administered only locally to the affected area where the medicine is needed, and a certain degree of spread is obtained. It is difficult to spray the aerosol more evenly to the affected area. An object of the present invention is to weigh a fixed amount of the contents in an aerosol container, and to divide a predetermined amount of the weighed contents into several portions over a fixed range. To provide an aerosol injection method that enables more even injection administration.

Another object of the present invention is to provide an aerosol injection structure that can smoothly execute an aerosol injection method that can achieve the above object.

Other objects and features of the present invention will be apparent from the following description.

Disclosure of the invention

The present invention

A first process of filling the contents in the aerosol container (1) into a weighing chamber (2) that is openably and closably communicated with the injection unit (31) and openably and closably communicated with the inside of the aerosol container (1);

A second step of blocking communication between the weighing chamber (2) and the aerosol container (1);

A third step of injecting the contents in the measuring chamber (2) at least twice from the injection section (31) by a predetermined amount,

And an aerosol injection method characterized by including the following. Thus, according to the first embodiment of the aerosol injection method of the present invention, the aerosol injection method of the present invention,

The weighing chamber (2) communicates with the first weighing chamber (21) and the injection section (31) in an openable and closable manner, and has a volume less than or equal to the volume of the first weighing chamber (21). ) And a second weighing chamber (22) which is openably and closably communicated. In the first step, the weighing chamber (21) is communicated with the first weighing chamber (21) and the second weighing chamber (22). 2) Contents of aerosol container (1) Charge,

In the third step, the step of interrupting the communication between the first measuring chamber (21) and the second measuring chamber (22), and the step of jetting the contents in the second measuring chamber (22) from the jetting section (31). This step is performed by repeating at least twice the step of causing the first measuring chamber (21) and the second measuring chamber (22) to communicate with each other again.

Further, according to the second embodiment of the aerosol injection method of the present invention,

The measuring chamber (2) is in openable and closable communication with the first measuring chamber (21) and the injection section (31), and has a volume not larger than 12 of the volume of the first measuring chamber (21) and the first measuring chamber. A second weighing chamber (22) that is openably closable with the chamber (21),

In the first step, the first weighing chamber (21) is filled with the contents in the aerosol container (1) while the communication between the first weighing chamber (21) and the second weighing chamber (22) is cut off. ,

In the third step, a step of making the first measuring chamber (21) communicate with the second measuring chamber (22); and a step of cutting off the communication between the first measuring chamber (21) and the second measuring chamber (22). And injecting the contents of the second measuring chamber (22) from the injection section (31) at least twice.

It is implemented by doing.

The present invention also provides an aerosol injection structure for carrying out the first embodiment of the aerosol injection method of the present invention.

Aerosol container (1), Injection unit (31),

A weighing chamber (2) in which a first weighing chamber (21) and a second weighing chamber (22) having a volume equal to or less than the volume of the first weighing chamber (21) are separated through a partition wall (23);

A valve stem (3) communicating with the injection part (31) and the second measuring chamber (22) and slidably penetrating the partition wall (23) and urged to maintain a constant posture at all times;

First open / close valve that opens and closes between the aerosol container (1) and the measuring chamber (2)

(4) and

When the valve stem (3) is kept in the fixed position, open between the first measuring chamber (21) and the second measuring chamber (22), and operate the first measuring chamber (3) by operating the valve stem (3). A second on-off valve (5) capable of closing between the 21) and the second measuring chamber (22);

By operating the valve stem (3), the opening between the injection part (31) and the second measuring chamber (22) can be opened when the second on-off valve (5) is closed. ,

It is characterized by having.

The present invention further provides an aerosol injection structure for carrying out the second embodiment of the aerosol injection method of the present invention, wherein the aerosol injection structure comprises:

Aerosol container (1),

Injection unit (31),

The first weighing chamber (21) and the second weighing chamber (22) having a capacity of 12 or less of the volume of the first weighing chamber (21) are divided by a partition wall (23). Mass chamber (2),

A first on-off valve (4) for opening and closing between the inside of the aerosol container (1) and the first measuring chamber (21);

When the valve stem (3) is kept in the fixed position, close the space between the first measuring chamber (21) and the second measuring chamber (22), and operate the first measuring chamber (3) by operating the valve stem (3). A second on-off valve (5) capable of opening and closing between the 21) and the second measuring chamber (22);

It is characterized by having.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a partial sectional view showing an aerosol injection structure according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view along the arrow E—E in FIG.

FIGS. 3 and 3A are partial cross-sectional views of the state in which the first on-off valve is closed by rotating the valve stem in the direction of the predetermined angle from the state of FIG. 1, and FIGS. FIG. 3 is a partial cross-sectional view showing a state in which the injection valve is opened by shifting the valve stem to the limit in the axial direction from the state of FIG.

FIG. 4 is a partial sectional view showing an aerosol injection structure according to a second embodiment of the present invention. FIGS. 5 and (C) are partial cross-sectional views of the state in which the first on-off valve is closed by rotating the valve stem toward the predetermined angular position from the state of FIG. 4, and FIGS. 3) is a partial cross-sectional view showing a state in which the injection valve is opened by shifting the valve stem to the limit in the axial direction from the state of FIG.

Embodiment of the Invention

Hereinafter, two preferred embodiments of an aerosol injection method and an aerosol injection structure according to the present invention will be described in more detail with reference to the drawings.

First embodiment:

Preferred embodiments of the aerosol injection structure according to the first embodiment of the present invention are shown in FIGS. 1, 2 and 3 (A) and (B).

The aerosol container (1) has a bottomed cylindrical body (10) and this body

(10) and a lid (11) which is hermetically covered on the upper part.

An opening (12) is formed in the upper center of (11).

The aerosol container (1) is filled with contents having a predetermined gas pressure.

In the aerosol container (1), there is provided a measuring chamber (2) having a force-up shape so as to reach the opening (12) through a gasket or other sealing member (24). ) Is hermetically pressed against the sealing member (24) in a crimped state by a ring-shaped concave portion (13) formed on the outer peripheral wall of the lid (11).

In this embodiment, the weighing chamber (2) is divided by a partition wall (23) into a lower first weighing chamber (21) and an upper second weighing chamber (22). The volume of 22) is designed to be less than the volume of the first measuring chamber (21) (for example, less than 12). A valve stem (3) having an injection part (31) is inserted into the measuring chamber (2) through the opening (12) of the aerosol container (1) toward the upper end side. .

The valve stem (3) penetrates through the sealing material (24) so that the constricted portion (32) fits into the through-hole (62) formed in the sealing material (24), and the distal end portion of the valve stem (3) A certain stroke is slidably inserted into the through hole (52) formed in 23). The valve stem (3) is constantly urged by an urging member (7) formed of a coil spring, for example, installed in the first measuring chamber (21), and a flange formed at the lower end of the valve stem (3). By contacting the part (33) with the lower surface of the partition wall (23), it is configured to maintain the fixed posture shown in FIG.

In the injection structure of the first embodiment, the first on-off valve (4) for opening and closing between the aerosol container (1) and the measuring chamber (2), and the valve stem (3) are maintained in the fixed position. Open the space between the first weighing chamber (21) and the second weighing chamber (22), and operate the first weighing chamber (21) and the second weighing chamber (22) by operating the valve stem (3). By operating the second on-off valve (5) that can close between the valve and the valve stem (3), when the second on-off valve (5) is closed, the injection part (31) and the second metering An injection valve (6) capable of opening between the chamber (22) is provided.

The first on-off valve (4) rotates a communication hole (41) formed in the chamber wall of the measuring chamber 2 provided in the aerosol container (1) and the valve stem (3) by a predetermined angle. And a valve piece (42) provided on the valve stem (3) so as to open and close the communication hole (41).

Thus, the first on-off valve (4) is, for example, an aerosol container (1) A communication hole (41) formed in the chamber wall of the first weighing chamber (21) so as to communicate with the weighing chamber (2), and a part of the outer periphery of the valve stem (3) that has an inverted L-shape in the circumferential direction And a valve piece (42) formed so as to protrude to the outside.

The valve piece (42) is in sliding contact with the inner peripheral surface of the first measuring chamber (21). For example, the communication hole is formed by rotating the valve stem (3) at a predetermined angle (for example, 180 °) from the state shown in FIG. (41) can be configured to be closed airtightly.

Further, the valve stem (3) is regulated so as to rotate forward and backward at a constant angle, and when rotated at a constant angle in one direction, the valve piece (42) closes the communication hole (41) and moves at a constant angle in the other direction. The valve piece (42) may be configured to open the communication hole (41) when rotated.

Thus, for example, when the valve stem (3) is in the fixed position shown in FIG. 1, the valve piece (42) abuts on the upward stop (25) formed on the inner peripheral wall of the first measuring chamber (21). It is regulated so that it does not descend from the state of Fig. 1, and as shown in Fig. 2, the movement of the valve piece (42) in the rotation direction moves vertically to the inner peripheral wall of the first weighing chamber (21). It is controlled by the formed pair of stoppers (26) and (27), and is controlled not to rotate beyond a predetermined angle (for example, 180 °).

In the first embodiment, a communication hole (41) is formed in the chamber wall of the first measuring chamber (21), and the valve piece is protruded from the valve stem (3) to the projecting portion into the first measuring chamber (21). Although (42) is formed, a communication hole (41) may be formed so as to communicate the aerosol container (1) and the second measuring chamber (22) in some cases. In this case, the second measuring chamber (22) of the valve stem (3) The valve piece (42) is formed in the part located inside.

The second on-off valve (5) is connected to the valve stem (3) so that the first measuring chamber (21) and the second measuring chamber (22) communicate with each other when the valve stem (3) is in the fixed position shown in FIG. (3) and a through hole (52) formed in the partition wall (23) so that a part of the valve stem (3) can be slidably inserted therethrough. I have.

When the valve stem (3) is pushed down to the lower limit, the second on-off valve (5) is provided with a tapered conical surface (55) formed on the valve stem (3) and a hole above the through hole (52). It is configured such that the concave conical seat (54) of the edge portion comes into contact with and the communication portion (51) is closed by being closed by the inner peripheral surface of the through hole (52).

The injection valve (6) has a communication hole (61) formed in the valve stem (3) so as to connect the injection part (31) and the second measuring chamber (22), and a valve stem (3) as shown in FIG. And the through-hole (62) of the seal material (24) that closes the communication hole (61) when it is in the fixed position as described above.

When the valve stem (3) is pushed down to the lower limit, the injection valve (6) is opened by the communication hole (61) formed in the valve stem (3) leading to the second measuring chamber (22). Is configured.

Thus, according to the first embodiment of the aerosol injection structure according to the present invention, preferably,

The valve stem (3) is passed through the through hole (62) of the sealing material (24) provided so as to close the opening (12) of the aerosol container (1) from the side of the second measuring chamber (22). The urging member (7) keeps the fixed posture while being pressed in the direction of the injection portion (31), The second on-off valve (5) is connected to the valve stem (3) so that the first measuring chamber (21) and the second measuring chamber (22) communicate with each other when the valve stem (3) is in the fixed position. A communication part (51) formed, and a partition wall (23) through which a part of the valve stem (3) slidably penetrates;

The injection valve (6) has a communication hole (61) formed in the valve stem (3) so as to communicate the injection part (31) and the second measuring chamber (22), and the valve stem (3) has the above-mentioned configuration. A through hole (62) of a sealing material (24) that closes the communication hole (61) when in the posture,

When the valve stem (3) is piled on the bias of the biasing member (7) and displaced in the axial direction to the limit, the communicating part (51) formed on the valve stem (3) is divided by the partition wall (23). ) Is closed by the inner peripheral surface of the through hole (52) formed in the second opening / closing valve (5), and the communication hole (61) of the valve stem (3) is connected to the second measuring chamber ( 22) The injection valve (6) is configured to open to the side.

Next, an operation of the aerosol injection structure according to the first embodiment of the present invention described above and an example of an aerosol injection method using the injection structure will be described.

In the first step of the injection operation of the aerosol injection structure, with the injection valve (6) closed, the second on-off valve (5) is opened to open the first measurement chamber (21) and the second measurement chamber (22). ), And by opening the first on-off valve (4) to connect the aerosol container (1) with the measuring chamber (2), the contents in the azole container (1) are transferred to the measuring chamber (1). To 2), introduce only the volume of the measuring chamber (2) [comprising the first measuring chamber (21) and the second measuring chamber (22)]. Fill the measuring chamber (2) with aerosol contents.

In this embodiment, when the valve stem (3) is in a fixed position as shown in FIG. 1, the injection valve (6) closes, the first on-off valve (4) and the second on-off valve (5) open. Therefore, the first step is executed by positioning the valve stem (3) in a fixed position as shown in FIG.

Next, in the second step, the valve stem (3) is rotated 180 ° in plan view from the state of FIG. 1 as shown by the arrow a in FIGS. By closing the on-off valve (4), the communication between the aerosol container (1) and the measuring chamber (2) is cut off.

In the injection structure of this embodiment, since the valve stem (3) is regulated by the stoppers (26) and (27) shown in FIG. 2 to stop when the valve stem (3) rotates 180 °, the valve stem (3) is stopped. Rotate in the direction of arrow a until you do.

In the state shown in FIG. 1, the valve stem (3) is regulated so as not to be pushed down by the stopper (25). However, the rotation causes the urging member (7) as shown in FIG. ) And can be pushed down.

In the third step, as shown in Fig. 3, (B), when the valve stem (3) is pushed down to the lower limit along arrow b, the second on-off valve (5) closes and the first weighing chamber is closed. The communication between (21) and the second measuring chamber (22) is cut off, and the injection valve (6) is opened, so that the contents in the second measuring chamber (22) are jetted from the jetting section (31).

When the pressure on the valve stem (3) in the direction of arrow b is released, the injection valve (6) closes and the second on-off valve (5) as shown in Fig. 3 (A). The aerosol contents in the first weighing chamber (21) do not fill the second weighing chamber.

Since the volume of the second measuring chamber (22) is less than the volume of the first measuring chamber (21), the operation of the valve system (3) as described above must be continued until the contents of the first measuring chamber (21) are exhausted. By repeating, the same amount of aerosol content as the volume of the second measuring chamber (22) is jetted from the jetting section (31) twice or more. To further inject the contents of the aerosol container (1), the first on-off valve (4) opens the valve stem (3) in the direction opposite to the arrow a in FIG. 41) to open], return to the first step, rotate the valve stem (3) again in the direction of arrow a until it stops, and move the first open / close valve (4) to the position shown in Fig. 3, (A). Close as shown, perform the second step, and repeat the third step as described above.

If it is not necessary to inject the contents of the aerosol container (1) anymore, rotate the valve stem from the state shown in Fig. 3 (A) until it stops in the direction opposite to the arrow "a". To return to.

According to the injection method of the embodiment described above, the content in the aerosol container (1) is once filled in the measuring chamber (2), and the communication between the aerosol container (1) and the measuring chamber (2) is established. After the first measuring chamber (21) is disconnected from the second measuring chamber (22), and the step of injecting the contents in the second measuring chamber (22) from the injection section (31). And the step of communicating the first measuring chamber (21) and the second measuring chamber (22) are repeated, so that the content in the measuring chamber (2) is reduced by two times the volume of the second measuring chamber (22). The aerosol container (1) weighs a certain amount of the content in the aerosol container (1) because it can be sprayed from the spraying part (31) in several times or more. Can be sprayed separately.

Therefore, each time the third step is repeated, the injection unit (31) is directed to different local areas of the affected area of the predetermined size each time, so that the medicine can be more uniformly dispersed and administered to the affected area of the predetermined size. Can be.

According to the aerosol injection structure of the first embodiment, first, the first measuring chamber (21) and the second measuring chamber having a volume equal to or less than the volume of the first measuring chamber (21). A first measuring valve (4), which opens and closes the space between the aerosol container (1) and the measuring chamber (2), while providing a measuring chamber (2) consisting of (22), and a first measuring chamber (21) A second on-off valve (5) that opens and closes between the second measuring chamber (22) and an injection valve (6) that opens and closes between the second measuring chamber (22) and the injection section (31). Since the injection valve (6) is configured to open when the second on-off valve (5) is closed, the injection method of the above embodiment can be smoothly and reliably performed.

Secondly, the first on-off valve (4) is formed by rotating the communication hole (41) formed in the chamber wall of the measuring chamber (2) and the valve stem (3) by a predetermined angle. ) Of the valve stem (3) so as to open and close the valve stem (3). By rotating the valve stem (3), the first on-off valve (4) is opened. The aerosol container (1) can be easily opened and closed, and as a result, the communication between the aerosol container (1) and the weighing chamber (2) can be easily controlled.

Third, the valve stem (3) is regulated so as to rotate forward and backward by a certain angle, and when rotated in one direction by a certain angle, the valve piece (42) closes the communication hole (41). Since the valve piece (42) can open the communication hole (41) when rotated by a certain angle in the other direction, The opening / closing valve (1) can be easily and reliably opened / closed without erroneous operation.

Fourthly, when the valve stem (3) is rotated to the limit in the direction in which the first on-off valve (4) is opened with the valve stem (3) in the fixed position described above, displacement in the axial direction is suppressed. In the normal storage state, the second on-off valve (5) and the injection valve (6) do not open even if an external axial force is applied to the valve stem (3). The aerosol inside the) can be prevented from being accidentally ejected.

Second embodiment:

Preferred embodiments of the aerosol injection structure according to the second embodiment of the present invention are shown in FIGS. 4 and 5C and 5D.

The configuration of the aerosol injection structure of the second embodiment according to the present invention is only partially different from the aerosol injection structure of the above-described first embodiment. It should be understood that the same components as those of the injection structure are denoted by the same reference numerals, and the description thereof will be omitted, and only the different configuration will be described.

In the second embodiment, the measuring chamber (2) is divided by a partition wall (23) into a first measuring chamber (21) at a lower portion [part away from the injection section (31)] and a first measuring chamber (21). The second measuring chamber (22) having a capacity of 1Z2 or less, preferably in the range of 1/3 to 1Z200 of the capacity of the measuring chamber (21) and facing the opening (1 2) side of the aerosol container (1). ).

The second on-off valve (5), which opens and closes between the first weighing chamber (21) and the second weighing chamber (22), is used when the valve stem (3) is in a fixed position as shown in FIG. The outer circumference of the valve stem (3) is located on the side of the second weighing chamber (22). An annular recess (53) formed on the surface and a through hole (52) formed in the partition wall (23) so that the lower end of the valve stem (3) slidably penetrates.

The second on-off valve (5) is closed as shown in FIG. 4 when the valve stem (3) is biased by the biasing member (7) and is in a fixed position, as shown in FIG. And the communication between the second weighing chamber (22).

The second on-off valve (5) opens once when the recess (53) passes through the through hole (52) while pushing down the valve stem (3) to the lower limit. 2 Connect the measuring chamber (22). When the valve stem (3) is further depressed, the conical surface (55) formed on the valve stem (3) and the concave conical seat (54) on the upper edge of the through hole (52). ) Comes in contact with and reaches the lower limit. When the valve stem (3) reaches the lower limit, the recess (53) moves toward the first measuring chamber (21) and the recess (53) is closed by the seat (54) of the through hole (52). Accordingly, the second on-off valve (5) is configured to be closed.

The first on-off valve (4) has a communicating hole (41) formed in the chamber wall on the side of the first measuring chamber (21) in the measuring chamber (2) and a valve stem (3) in the valve stem (3). ) Is rotated by a predetermined angle to open and close the communication hole (41).

Thus, according to the second embodiment of the aerosol injection structure according to the present invention, preferably

The valve stem (3) is passed through the through hole (62) of the sealing material (24) provided so as to close the opening (12) of the aerosol container (1) from the side of the second measuring chamber (22). And the urging member (7) (31) is maintained in the fixed posture in a state pressed in the direction,

The second (2) on-off valve (5) is a recess formed in the outer periphery of the valve stem (3) so that it is located in the second measuring chamber (22) when the valve stem (3) is in a fixed position. (53) and a through hole (52) formed in the partition wall (23) so that a part of the valve stem (3) slidably penetrates,

In the process of displacing the valve stem (3) in the axial direction with the bias of the biasing member (7), the recess (53) passes through the through-hole (52) formed in the partition wall (23). At this time, the second on-off valve (5) is once opened by once communicating between the first measuring chamber (21) and the second measuring chamber (22),

When the valve stem (3) is pushed to the limit by the bias of the biasing member (7) and displaced to the limit in the axial direction, the recess (53) forms a through hole (52) formed in the partition wall (23). The second on-off valve (5) is closed again by shutting off again between the first weighing chamber (21) and the second weighing chamber (22) by means of-the communication hole (61) of the valve stem (3). Is connected to the second measuring chamber (22) and the injection valve (6) is opened.

Next, an operation of the aerosol injection structure according to the second embodiment of the present invention described above and an example of an aerosol injection method using the injection structure will be described.

The first of the injection methods using the aerosol injection structure of the second embodiment In the step (3), with the injection valve (6) closed, the second on-off valve (5) is closed to cut off the communication between the first measuring chamber (21) and the second measuring chamber (22), By opening the first on-off valve (4) and connecting the aerosol container (1) and the measuring chamber (2), the contents of the aerosol in the aerosol container (1) are transferred to the second measuring chamber (21). Introduce only the volume of 1 weighing chamber (21) and fill the 1st weighing chamber (21) with the contents.

In this embodiment, when the valve stem (3) is in a fixed position as shown in FIG. 4, the injection valve (6) closes, the first on-off valve (4) opens, and the second on-off valve (5) opens. Since it is closed, the first step is executed by positioning the valve stem (3) in the fixed position as shown in FIG.

Next, in the second step, the valve stem (3) is rotated 180 ° in plan view from the state of FIG. 4 as shown by the arrow a in FIGS. By closing the on-off valve (4), the communication between the aerosol container (1) and the first measuring chamber (21) is cut off.

In the injection structure according to the second embodiment, similarly to the injection structure according to the first embodiment, the valve stops when the valve stem (3) rotates 180 ° by the stoppers (26) and (27) shown in FIG. The valve stem (3) can be rotated in the direction of arrow a until it stops. By rotating the valve stem (3) to the state shown in Fig. 5 and (C), the valve piece (42) comes off the stopper (25), and the urging member (7) is urged as shown in the figure. You can stake and push down.

In the third step, the valve stem (3) is pushed down several times along arrow b until the lower limit is reached, as shown in Figure 5, (D).

As mentioned above, the second on-off valve (5) has the valve stem (3) Once opened during the process of moving down along

(1) The contents in the weighing chamber (21) move to the second weighing chamber and become full. When the valve stem (3) is further depressed and reaches the lower limit, the second on-off valve (5) is closed again, and the communication between the first measuring chamber (21) and the second measuring chamber (22) is cut off again. The injection valve (6) is similar to the injection structure of the first embodiment.

5, As shown in (D), the contents in the second measuring chamber (22) are jetted from the jetting section (31).

Since the volume of the second measuring chamber (22) is less than or equal to 12 of the volume of the first measuring chamber (21), the valve stem (3) is maintained until the contents of the first measuring chamber (21) are exhausted. By repeating the operation twice or more, the content of the volume of the second measuring chamber (22) is jetted from the jetting section (31) each time the operation is performed.

To further inject the contents of the aerosol container (1), the first on-off valve (4) opens the valve stem (3) in the direction opposite to the arrow a shown in Fig. 5 and (C). Hole (41) is opened], return to the first step, rotate the valve stem (3) again in the direction of arrow a until it stops, and rotate the first on-off valve (4) as shown in Fig. 5, (C ), The second step is executed, and the third step is repeated as described above.

If it is not necessary to inject the contents of the aerosol container (1) any more, rotate the valve stem from the state shown in Fig. 5 and (C) until it stops in the direction opposite to the arrow a, and the state shown in Fig. 4 To return to.

According to the injection method using the aerosol injection structure of the second embodiment described in the above example, the contents in the aerosol container (1) are stored in the first measurement chamber (21) of the measurement chamber (2). To the aerosol container (1) After the communication with the weighing chamber (2) is cut off, the first weighing chamber (21) and the second weighing chamber (22) are once connected, and the communication is cut off again and the inside of the second weighing chamber (22) is cut off. By repeating the process of injecting the contents of the first measuring chamber (21), the contents in the first measuring chamber (21) are sprayed from the spraying section (31) twice or more by the volume of the second measuring chamber (22). Therefore, a certain amount of the contents in the aerosol container (1) can be weighed, and the measured amount of the contents can be surely sprayed several times in fixed quantities.

According to the aerosol injection structure of the second embodiment, the first measuring chamber (21) and the second measuring chamber (12) having a volume of 12 or less of the volume of the first measuring chamber (21) are also provided. A measuring chamber (2) consisting of 22) is provided, and a first opening / closing valve (4) that opens and closes between the azole container (1) and the first measuring chamber (21), and a valve stem (3) When the is maintained in a fixed position, close the space between the first weighing chamber (21) and the second weighing chamber (22), and operate the first weighing chamber (21) and the second weighing chamber by operating the valve stem (3). By operating the second on-off valve (5) that opens and closes the chamber (22) and the valve stem (3), the injection part (31) is opened when the second on-off valve (5) is closed. Since the injection valve (6) that opens between the second measuring chamber (22) and the second measuring chamber (22) is provided, the injection method of the above embodiment can be smoothly and reliably performed.

According to the aerosol injection structure of the second embodiment, it goes without saying that the same operation and effect as described above can be achieved for the aerosol injection structure of the first embodiment. Other embodiments:

In the above-described first and second embodiments of the present invention, the first on-off valve (4) has its communication hole (41) opened and closed by operation of the valve stem (3) in the rotation direction. However, the communication hole can be changed to be opened and closed by operation of another operation piece.

Claims

The scope of the claims

1. The first step of filling the contents of the aerosol container (1) into the weighing chamber (2) which is openably and closably connected to the injection unit (31) and openably and closably connected to the inside of the aerosol container (1). ,

Is characterized by including

Aerosol injection method.

2. The measuring chamber (2) is in openable and closable communication with the first measuring chamber (21) and the injection section (31), and has a volume less than or equal to the volume of the first measuring chamber (21) and the first measuring chamber. (21) and a second weighing chamber (22) that can be opened and closed.

In the first step, the contents in the aerosol container (1) are filled in the measuring chamber (2) with the first measuring chamber (21) and the second measuring chamber (22) in communication with each other,

In the third step, the step of interrupting the communication between the first measuring chamber (21) and the second measuring chamber (22), and the step of jetting the contents in the second measuring chamber (22) from the jetting section (31). And repeating the step of communicating the first measuring chamber (21) and the second measuring chamber (22) again at least twice.

The aerosol injection method according to claim 1, wherein:

3. The weighing chamber (2) opens and closes with the first weighing chamber (21) and the injection unit (31) A second weighing chamber (22) communicable with the first weighing chamber (21) and having a volume less than or equal to 12 of the volume of the first weighing chamber (21), and communicable with the first weighing chamber (21).

The aerosol injection method according to claim 1, wherein:

4. Aerosol container 1 and

Injection unit (31),

A valve stem (3) communicating with the injection part (31) and the second measuring chamber (22) and slidably penetrating the partition wall (23), and biased to always maintain a fixed posture;

A first on-off valve (4) for opening and closing between the aerosol container (1) and the measuring chamber (2);

When the valve stem (3) is kept in the fixed position, open between the first measuring chamber (21) and the second measuring chamber (22), and operate the first measuring chamber (3) by operating the valve stem (3). It is possible to close between 21) and the second weighing chamber (22). A second on-off valve (5) that can be

An aerosol injection structure comprising:

5. The measuring chamber (2) is provided in the aerosol container (1), and the first on-off valve (4) is connected to a communication hole formed in the chamber wall of the measuring chamber (2).

(41) and a valve piece (42) provided in the valve stem (3) so as to open and close the communication hole (41) by rotating the valve stem (3) by a predetermined angle.

5. The aerosol injection structure according to claim 4, wherein:

6. The valve stem (3) is regulated so as to rotate forward and backward by a certain angle.

6. The valve according to claim 5, wherein the valve piece (42) is configured to open the communication hole (41) when the (41) is closed and rotated by a certain angle in the other direction. Aerosol injection structure.

7. The valve stem (3) penetrates into the through hole (62) of the sealing material (24) provided to close the opening (12) of the aerosol container (1) from the side of the second measuring chamber (22). And the urging member (7) is kept in a fixed posture while being pressed in the direction of the injection portion (31).

The second on-off valve (5) is formed in the valve stem (3) so that the first measuring chamber (21) and the second measuring chamber (22) communicate with each other when the valve stem (3) is in a fixed position. Through hole (52) formed in the partition wall (23) so that the communication part (51) and a part of the valve stem (3) slidably pass through. Is composed of

In the injection valve (6), a communication hole (61) formed in the valve stem (3) so that the injection part (31) communicates with the second measuring chamber (22), and the valve stem (3) have a fixed posture. And a through hole (62) of a sealing material (24) that closes the communication hole (61) when the

When the valve stem (3) is piled on the bias of the biasing member (7) and displaced in the axial direction to the limit, the communicating part (51) formed on the valve stem (3) is divided by the partition wall (23). ) Is closed by the inner peripheral surface of the through hole (52) formed in the second opening / closing valve (5), and the communication hole (61) of the valve stem (3) is connected to the second measuring chamber ( 22) The injection valve (6) is configured to open to the side

6. The aerosol injection structure according to claim 5, wherein:

8. Aerosol container 1 and

Injection unit (31),

The first measuring chamber (21) and the second measuring chamber (22) having a volume of 1Z2 or less of the volume of the first measuring chamber (21) are separated by a partition wall (23). ) When,

When the valve stem (3) is in a fixed position, close the space between the first and second measuring chambers (21) and (22) and operate the valve stem (3). A second on-off valve (5) that can open and close between the first weighing chamber (21) and the second weighing chamber (22),

An aerosol injection structure comprising:

9. The measuring chamber (2) is provided in the aerosol container (1), and the first on-off valve (4) is formed in the chamber wall of the measuring chamber (2) on the side of the first measuring chamber (21). And a valve piece (42) provided in the valve stem (3) to open and close the communication hole (41) by rotating the valve stem (3) by a predetermined angle. The aerosol injection structure according to claim 8, wherein:

10. The valve stem (3) is regulated so as to rotate forward and backward by a certain angle. When the valve stem (3) rotates by a certain angle in one direction, the valve piece (42) closes the communication hole (41). 10. The aerosol injection structure according to claim 9, wherein the valve piece (42) is configured to open the communication hole (41) when rotated by a predetermined angle in the direction.

11. The valve stem (3) penetrates through the through hole (62) of the sealing material (24) provided so as to close the opening (12) of the aerosol container (1) from the side of the second measuring chamber (22). And the urging member (7) is kept in a fixed posture while being pressed in the direction of the injection portion (31).

The second on-off valve (5) is provided with a concave portion (3) formed on the outer periphery of the valve stem (3) so as to be located in the second measuring chamber (22) when the valve stem (3) is in a fixed position. 53) and part of the valve stem (3) slidably penetrate And a through hole (52) formed in the partition wall (23) so that the injection valve (6) is connected to the valve stem so that the injection part (31) communicates with the second measuring chamber (22). A communication hole (61) formed in (3), and a through-hole (62) of a sealing material (24) that closes the communication hole (61) when the valve stem (3> is in a fixed position,

When the valve stem (3) is pushed to the limit by the bias of the biasing member (7) and displaced to the limit in the axial direction, the recess (53) forms a through hole (52) formed in the partition wall (23). By shutting off the first measuring chamber (21) and the second measuring chamber (22) again, the second on-off valve (5) is closed again and the communication hole (61) of the valve stem (3) is opened. Is connected to the second measuring chamber (22) and the injection valve (6) is opened.

The aerosol injection structure according to claim 9, wherein:

12. The valve stem (3) is characterized in that axial displacement is suppressed when the valve stem (3) is in a fixed position and the first on-off valve (4) is open. The aerosol injection structure according to any one of claims 4 to 11, wherein