CN111051215B

CN111051215B - Trigger type spray member for aerosol and aerosol product

Info

Publication number: CN111051215B
Application number: CN201880057164.4A
Authority: CN
Inventors: 原田悠耶; 小林洋子; 大野泰史; 中山幸治
Original assignee: Dainihon Jochugiku Co Ltd
Current assignee: Dainihon Jochugiku Co Ltd
Priority date: 2017-10-06
Filing date: 2018-10-05
Publication date: 2022-08-12
Anticipated expiration: 2038-10-05
Also published as: JP7096259B2; CN111051215A; JPWO2019070045A1; TWI688529B; TW201922587A; WO2019070045A1

Abstract

Provided is a trigger-type aerosol spray member which can prevent a chemical solution from adhering to a user's hand when an operation such as a sufficient pulling operation of a trigger lever is not performed. It is provided with: a nozzle (13) having an ejection hole (13b) formed in an end surface (13 a); a trigger lever (14) which is disposed behind the end surface (13a) of the nozzle (13) and which is operated by a user to eject the contents of the aerosol container (20) from the nozzle (13); a liquid leakage prevention unit for preventing the leakage of the content from the nozzle (13) to the trigger operation rod (14); and a sleeve (15) into which the nozzle (13) is inserted, the liquid leakage prevention unit being a liquid storage portion (16) formed between the nozzle (13) and the sleeve (15).

Description

Trigger-type aerosol spray member and aerosol product

Technical Field

The present invention relates to a trigger-type aerosol injection member for injecting the contents of an aerosol container, and an aerosol product having the injection member.

Background

In general, aerosol products are provided with: an ejection member including an actuator, a nozzle, and the like, and an aerosol container are configured to eject the contents of the aerosol container (hereinafter, simply referred to as "contents") including a chemical solution and an ejection agent from the nozzle by depressing the actuator to open a valve of the aerosol container. Such aerosol products are widely used as products for dispensing a liquid medicine containing an active ingredient such as an insecticidal ingredient, an insect-repellent ingredient, and a deodorant ingredient by a simple operation. Among them, a trigger type aerosol product including a trigger lever for depressing an actuator and a trigger type actuator is often used for application of directly hitting a chemical liquid against pests because the operation is easy and the aim in the spraying direction is easy.

For example, patent document 1 discloses an aerosol product in which an actuator is formed into a trigger type of trigger. In the aerosol product of patent document 1, when the actuator is tilted by the operation of the trigger lever, the valve of the aerosol container is opened, and the content of the aerosol container is ejected from the nozzle provided to the actuator.

[ Prior art documents ]

[ patent document ]

Patent document 1: japanese laid-open patent application No. 2010-163182

Disclosure of Invention

[ problem to be solved by the invention ]

The trigger lever can be easily operated even with a weak force, but has a wider movable width than a structure in which an actuator is directly operated, such as a push button type. Therefore, there is a possibility that an inappropriate operation is performed, such as the trigger lever not being pulled to the end and being held at the intermediate position of the movable range, or the trigger lever not being operated at a sufficient speed and staying at the intermediate position for a relatively long time. Therefore, the present inventors have made detailed observations of the behavior of the liquid medicine ejected from the aerosol product when such an operation is performed. As a result, it was confirmed that liquid leakage occurred, such that the liquid chemical was scattered in the vicinity of the nozzle without being vigorously sprayed, or dropped from the nozzle directly downward. Further, it has been found that if leakage from the nozzle occurs during operation of the aerosol product, there is a problem that the chemical solution adheres to the fingers of the user who operates the trigger lever.

At present, the problem of liquid leakage from the nozzle and the attachment of the liquid medicine to the fingers due to the operation of the trigger lever is not recognized in the conventional trigger-type aerosol products such as the aerosol product described in patent document 1, and no appropriate measures are taken.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a trigger-type aerosol spray member capable of preventing a chemical solution from adhering to a finger of a user even when an operation such as pulling a trigger lever sufficiently is performed, and an aerosol product including the spray member.

[ MEANS FOR solving PROBLEMS ] A method for producing a semiconductor device

In order to solve the above problems, the present invention provides a trigger-type aerosol spray member, comprising: a nozzle having an injection hole formed in an end surface thereof; a trigger lever which is disposed rearward of an end surface of the nozzle and which is operated by a user to eject the contents of the aerosol container from the nozzle; and a liquid leakage prevention unit for preventing the leakage of the content from the nozzle to the trigger lever side.

According to the trigger-type aerosol injection member of the present configuration, since the liquid leakage prevention means for preventing liquid leakage from the nozzle to the trigger lever side is provided, in the case where the content of the aerosol container, that is, the chemical liquid leaks from the injection hole due to an operation such as not pulling the trigger lever sufficiently, or the chemical liquid is not ejected vigorously from the nozzle, it is possible to prevent the trigger lever from being contaminated by the leaked chemical liquid and the chemical liquid which is not ejected distantly. Therefore, when an operation such as pulling the trigger lever insufficiently is performed, it is possible to prevent the chemical solution from adhering to the fingers of the user who operates the trigger lever.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the trigger-type aerosol spray member includes a sleeve into which the nozzle is inserted, and the leakage prevention unit is a liquid reservoir formed between the nozzle and the sleeve.

According to the trigger-type aerosol injection member of the present configuration, since the chemical solution oozed from the injection hole can be held in the reservoir, the oozed chemical solution can be prevented from dripping from the nozzle, and the trigger lever can be prevented from being contaminated. Therefore, when an operation such as pulling the trigger lever insufficiently is performed, it is possible to prevent the chemical solution from adhering to the fingers of the user who operates the trigger lever.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the nozzle has a tapered portion whose diameter is reduced toward a spray direction of the content, and the liquid reservoir is a groove portion formed between a tapered surface of the tapered portion and an inner circumferential surface of the sleeve.

According to the trigger-type aerosol spray member of the present configuration, the chemical solution that has entered the groove portion spreads to the entire groove portion by the capillary phenomenon and stays by the surface tension, so that a sufficient amount of the chemical solution can be held. Therefore, the chemical solution oozing from the injection hole can be prevented from dripping from the nozzle.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the liquid reservoir is a narrow gap portion formed between an outer circumferential surface of the nozzle and an inner circumferential surface of the sleeve.

According to the trigger-type aerosol injection member of the present configuration, the chemical liquid that has entered the narrow gap portion spreads and stays throughout the narrow gap portion due to the capillary phenomenon, and therefore a sufficient amount of the chemical liquid can be held. Therefore, the chemical solution oozing from the injection hole can be prevented from dripping from the nozzle.

In the trigger-type aerosol spray member according to the present invention, it is preferable that a distance from an outer peripheral surface of the nozzle to an inner peripheral surface of the sleeve is 0.01 to 1.0 mm.

According to the trigger-type aerosol injection member of the present configuration, the distance from the outer peripheral surface of the nozzle to the inner peripheral surface of the sleeve is set to an appropriate numerical range, whereby the chemical solution can be easily spread by surface tension or capillary phenomenon, and a narrow gap portion having a sufficient volume can be formed.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the nozzle has an end face disposed at a position receded from an end portion of the sleeve, and the liquid reservoir is an inner circumferential surface of the sleeve between the end portion of the sleeve and the end face of the nozzle.

According to the trigger-type aerosol injection member of the present configuration, the chemical solution that has leaked from the injection hole can be held on the inner circumferential surface of the sleeve by utilizing the surface tension or capillary phenomenon thereof. Therefore, the chemical solution oozing from the injection hole can be prevented from dripping from the nozzle.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the leakage prevention unit is a liquid receiving portion provided below an end surface of the nozzle.

When an operation such as pulling the trigger lever insufficiently is performed, for example, if the aerosol product is directed obliquely upward, a part of the chemical liquid that has not been ejected vigorously and has fallen down near the end face of the nozzle may scatter near the trigger lever. According to the trigger-type aerosol injection member of the present configuration, it is possible to receive, in the liquid receiving portion, particles of the chemical solution that have fallen in the vicinity of the end face of the nozzle with a small flying distance without being vigorously injected from the injection hole. Therefore, even if an operation such as not pulling the trigger lever sufficiently is performed in a state in which the aerosol product is directed obliquely upward, particles of the chemical liquid do not scatter in the vicinity of the trigger lever, and the chemical liquid can be prevented from adhering to the fingers of the user who operates the trigger lever.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the liquid receiving portion has an inclined surface inclined forward and downward from the nozzle.

According to the trigger-type aerosol injection member of the present configuration, even when the aerosol product is operated obliquely upward, the liquid chemical received by the liquid receiving portion can be prevented from flowing backward by the inclined surface, and therefore, the liquid chemical can be prevented from adhering to the finger of the user who operates the trigger lever disposed rearward of the end surface of the nozzle.

In the trigger-type aerosol spray member according to the present invention, the inclined surface preferably includes a steep inclined surface portion and a gentle inclined surface portion extending forward from the steep inclined surface portion.

According to the trigger-type aerosol spray member of the present configuration, the received chemical liquid can be reliably prevented from flowing backward by the steep slope portion, and a large amount of the chemical liquid can be held in the gentle slope portion.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the leakage prevention unit further includes a side wall portion that extends upward from the liquid receiving portion and covers a side of an end surface of the nozzle.

According to the trigger-type aerosol injection member of the present configuration, it is possible to attach particles, which are scattered diagonally from the injection hole, among particles of the chemical liquid injected with insufficient injection force to the side wall portion before dropping, and to guide the particles downward along the side wall portion and receive the particles by the liquid receiving portion.

In the trigger-type aerosol spray member according to the present invention, it is preferable that the liquid leakage prevention unit is a link mechanism that moves the nozzle in parallel in the vertical direction in conjunction with the operation of the trigger lever without changing the posture of the end surface of the nozzle when the trigger lever is operated by a user.

When the trigger lever is operated, for example, if the posture of the end surface of the nozzle is changed to face downward in conjunction with the rotation of the trigger lever, the chemical liquid attached to the end surface of the nozzle is likely to drip downward. For example, in the aerosol product of patent document 1, since the actuator itself is formed into a trigger type, when the trigger lever is operated, the actuator tilts, and an end surface of a nozzle provided in the actuator also tilts downward, so that liquid leakage may occur. According to the trigger-type aerosol injection member of the present configuration, since the change in the posture of the end face can be suppressed by the link mechanism when the trigger lever is pulled, the chemical liquid attached to the end face of the nozzle can be prevented from dripping downward, and the trigger lever can be prevented from being contaminated.

The aerosol product of the present invention for solving the above problems is characterized by comprising the trigger-type aerosol spray member.

According to the aerosol product of the present configuration, since the aerosol injection member includes the leakage prevention means for preventing leakage from the nozzle to the trigger lever, it is possible to prevent the trigger lever from being contaminated by the leaked liquid chemical or the liquid chemical not ejected from the nozzle when the liquid chemical is leaked from the injection hole or the liquid chemical is not ejected forcefully from the nozzle by an operation such as not pulling the trigger lever sufficiently. Therefore, when an operation such as pulling the trigger lever insufficiently is performed, it is possible to prevent the chemical solution from adhering to the fingers of the user who operates the trigger lever.

Drawings

Fig. 1 is a perspective view of an aerosol product having a spray member for aerosol of embodiment 1 of the present invention.

Fig. 2 is a sectional view of an aerosol spray member according to embodiment 1 of the present invention.

Fig. 3 is a cross-sectional view of a nozzle and a sleeve that can be used in the aerosol injection member according to embodiment 1 of the present invention.

Fig. 4 is a perspective view of an aerosol product having a spray member for aerosol of embodiment 2 of the present invention.

Fig. 5 is a sectional view of an aerosol spray member according to embodiment 2 of the present invention.

Fig. 6 is an assembly view of an aerosol product having a spray member for aerosol of embodiment 3 of the present invention.

Fig. 7 is an explanatory view of a link mechanism of an aerosol spray member according to embodiment 3 of the present invention.

Detailed Description

The present invention will be described below with reference to fig. 1 to 7. However, the present invention is not intended to be limited to the configurations of the embodiments and the drawings described below. In the following embodiments, the direction of the aerosol product is referred to as "forward" and the direction opposite thereto is referred to as "rearward".

[ trigger-type spray Member for Aerosol/Aerosol product ]

The trigger-type aerosol spray member (hereinafter, may be simply referred to as "spray member") of the present invention may be attached to an aerosol container to constitute the aerosol product of the present invention. The injection member includes: the aerosol container includes a nozzle having an ejection hole formed in an end surface thereof, a trigger lever arranged behind the end surface of the nozzle and operated by a user to eject the contents of the aerosol container from the nozzle, and a leakage prevention unit for preventing leakage of the contents from the nozzle to the trigger lever side. Here, the phrase "the content leaks from the nozzle to the trigger lever side" includes not only a phenomenon in which the content of the aerosol container drops from the nozzle directly downward but also a phenomenon in which the content of the aerosol container is scattered in the vicinity of the nozzle without obtaining a sufficient ejection force at the time of ejection.

< embodiment 1 >

Fig. 1 is a perspective view of an aerosol product 100 having an ejection member 10 for aerosol of embodiment 1 of the present invention. Fig. 2 is a sectional view of an aerosol spray member 10 according to embodiment 1 of the present invention. Fig. 2 is a sectional view showing a section at a vertical plane including the ejection axis of the ejection member 10 for aerosol.

As shown in fig. 1, the aerosol product 100 includes: an aerosol container 20, and an ejection member 10 attached to the aerosol container 20. The aerosol container 20 includes a valve (not shown) and a valve stem (not shown) that are maintained in a closed state during non-operation, and is filled with a liquid medicine and an propellant as contents.

As shown in fig. 2, the injection member 10 in embodiment 1 includes: a base member 11, an actuator 12, a nozzle 13, and a trigger lever 14.

The base member 11 engages with a mounting portion (not shown) of the aerosol container 20 to couple the aerosol container 20 and the injection member 10.

The actuator 12 is a hollow member having a communication passage therein, and has one end portion with an enlarged diameter to form a sleeve 15 into which the nozzle 13 is inserted. An ejection hole 13b is formed in an end surface 13a of the nozzle 13. The other end of the actuator 12 is coupled to a stem of the aerosol container 20, and the valve of the aerosol container 20 can be opened by depressing the actuator 12. When the valve of the aerosol container 20 is in the open state, the content of the aerosol container 20 flows from the stem into the communication path of the actuator 12, and the content is ejected from the ejection hole 13 b.

A liquid leakage prevention unit, that is, a liquid reservoir 16 of the ejection member 10 for aerosol of embodiment 1 of the present invention is formed between the sleeve 15 and the nozzle 13. The liquid reservoir 16 holds the liquid chemical oozing from the ejection hole 13b between the nozzle 13 and the sleeve 15 by its surface tension.

The trigger lever 14 is rotatably attached to the base member 11, and a front end 14a thereof is disposed rearward of a surface including an end surface 13a indicated by a one-dot chain line in fig. 2. The trigger lever 14 is rotated by a user's operation to depress the actuator 12.

If the trigger lever 14 is not sufficiently tightened, for example, the front end 14a is held at a position slightly retreated toward the aerosol container 20 side, the depression of the actuator 12 becomes slight. In a state where the actuator 12 is slightly depressed, the speed at which the contents of the aerosol container 20 flow out from the valve stem becomes small, and thus, for example, the drug solution leaking from the valve stem leaks out from the injection hole 13 b. In the ejection member 10 in embodiment 1, the chemical liquid oozing from the ejection hole 13b is held in the liquid reservoir portion 16 to prevent the chemical liquid from adhering to the user's finger due to liquid leakage.

[ liquid storage part ]

Fig. 3 is a cross-sectional view of a nozzle 13 and a sleeve 15 of an aerosol injection member that can be used in embodiment 1 of the present invention. The sectional view of fig. 3(a) shows the portion a-a' of fig. 2 in an enlarged manner. The nozzle 13 has a tapered portion 13c that reduces in diameter in the injection direction, and an annular groove portion 16a is formed by the tapered surface 13d of the nozzle 13 and the inner circumferential surface 15b of the sleeve 15. The groove 16a functions as the liquid reservoir 16. The chemical liquid that has entered the groove portion 16a rises in the groove portion 16a by capillary action, and thereby spreads not only below the injection port 13b but also over the entire circumference of the annular groove portion 16 a. Therefore, the chemical solution oozed from the injection hole 13b by insufficient operation of the trigger lever 14 does not drip down the nozzle 13, but stays in the groove portion 16a by its surface tension as shown by the two-dot chain line.

The depth d of the tapered portion 13c is preferably 0.01 to 2.0mm, and more preferably 0.05 to 1.0 mm. If the depth d is smaller than 0.01mm, the volume of the groove 16a is insufficient and a sufficient amount of the chemical cannot be held. If the depth d exceeds 2.0mm, the diameter of the end face 13a becomes too small, and it may become difficult to form the injection hole 13 b.

The angle D formed by the tapered surface 13D and the inner peripheral surface 15b is preferably 10 to 80 degrees, and more preferably 20 to 70 degrees. If the angle D is smaller than 10 degrees, the volume of the groove portion 16a is insufficient and a sufficient amount of the chemical cannot be held. If the angle D exceeds 80 degrees, the rise of the chemical solution due to surface tension is insufficient, and there is a possibility that the chemical solution is difficult to be held around the entire circumference of the annular groove portion 16 a.

The tapered portion 13c is not limited to the case where the cross section of the tapered surface 13d shown in fig. 3(a) is linear, and may be the case where the cross section of the tapered surface 13d is curved. Further, the end face 13a may be formed into a curved surface shape bulging forward, so that an annular groove portion 16a may be formed by a portion of the end face 13a in the vicinity of the sleeve 15 and the inner circumferential surface 15b of the sleeve 15. In fig. 3(a), the end surface 13a of the nozzle 13 and the end portion 15a of the sleeve 15 are located on the same plane, but the end surface 13a of the nozzle 13 may protrude slightly forward from the end portion 15a as long as the configuration of the annular end portion 16a is not obstructed. In this configuration, the amount of protrusion of the end face 13a from the end face 15a is preferably 0.05 to 1.0mm, and more preferably 0.1 to 0.6 mm. When the projection amount of the end surface 13a is 0.05 to 1.0mm, the chemical solution flowing out of the injection port 13b flows downward along the end surface 13a, and flows into the groove portion 16a from the lower end of the end surface 13a and is held. However, in order not to interfere with the configuration of the annular end portion 16a, the amount of protrusion of the end surface 13a from the end surface 15a needs to be smaller than the depth d of the tapered portion 13c in order to maintain the liquid reservoir 16.

The liquid storage portion 16 is not limited to the configuration shown in fig. 3(a), and may have another configuration as long as it can hold the chemical liquid between the nozzle 13 and the sleeve 15 by surface tension or capillary action. For example, the liquid reservoir 16 may have the structure shown in (b) to (d) of fig. 3.

In the configuration shown in fig. 3 (b), the outer diameter of the nozzle 13 is formed to be smaller than the inner diameter of the sleeve 15 by the width w, and the nozzle 13 and the sleeve 15 are arranged so that their axes coincide with each other, thereby forming a narrow gap portion 16b of the width w between the outer peripheral surface 13e of the nozzle 13 and the inner peripheral surface 15b of the sleeve 15. The narrow gap portion 16b functions as the liquid reservoir portion 16. The chemical solution entering the narrow gap portion 16b spreads over the entire narrow gap portion 16b by capillary action, and stays not only below the injection port 13b but also over the entire circumference.

The width w is preferably 0.01 to 1.0mm, more preferably 0.05 to 0.5 mm. If the width w is smaller than 0.01mm, the volume of the narrow gap portion 16b is insufficient and a sufficient amount of the chemical cannot be held. If the width w exceeds 1.0mm, the rise of the chemical solution due to the capillary phenomenon becomes insufficient, and there is a possibility that the chemical solution is held over the entire periphery of the narrow gap portion 16 b. Although the end surface 13a of the nozzle 13 and the end portion 15a of the sleeve 15 are located on the same plane in fig. 3 (b), the end surface 13a of the nozzle 13 may be configured to protrude slightly forward from the end surface 15 a. In this configuration, the amount of protrusion of the end face 13a from the end face 15a is preferably 0.05 to 1.0mm, and more preferably 0.1 to 0.6 mm. When the amount of protrusion of the end surface 13a is 0.05 to 1.0mm, the chemical solution flowing out of the injection port 13b flows downward along the end surface 13a, and flows into and is held in the narrow gap portion 16b from the lower end of the end surface 13 a.

In the configuration shown in fig. 3 (c), the end surface 13a of the nozzle 13 is disposed at a position rearward of the end portion 15a of the sleeve 15. With this configuration, the inner peripheral surface 15b of the sleeve 15 is exposed from the end 15a of the sleeve 15 to the end surface 13a of the nozzle 13. The exposed portion 16c of the inner peripheral surface 15b functions as a liquid reservoir 16. The chemical solution oozed from the ejection hole 13b by insufficient operation of the trigger lever 14 does not drip down the nozzle 13, but stays in the liquid storage portion 16 due to its surface tension as shown by the two-dot chain line.

The retreat width SB from the end 15a of the sleeve 15 to the end face 13a of the nozzle 13 is preferably 0.01 to 1.0mm, and more preferably 0.05 to 0.5 mm. If the receding width SB is smaller than 0.01mm, a sufficient amount of the liquid chemical cannot be held in the liquid storage portion 16, and it may be difficult to sufficiently prevent liquid leakage. If the retreat width SB exceeds 1mm, part of the chemical solution normally injected and diffused from the injection port 13b may adhere to the inner circumferential surface 15b of the sleeve 15.

In the configuration shown in fig. 3 (d), an annular groove portion 16a is formed by the tapered surface 13d of the nozzle 13 and the inner circumferential surface 15b of the sleeve 15, a narrow gap portion 16b is formed between the outer circumferential surface 13e of the nozzle 13 and the inner circumferential surface 15b of the sleeve 15, and an exposed portion 16c is exposed from the end portion 15a of the sleeve 15 to the end surface 13a of the nozzle 13. The groove portion 16a, the narrow gap portion 16b, and the exposed portion 16c are similar to the structures described with reference to (a) to (c) of fig. 3, and all of them function as the liquid reservoir portion 16.

As described above, the aerosol spray member 10 and the aerosol product 100 according to embodiment 1 of the present invention can hold the chemical solution oozing from the spray hole 13b in the liquid storage portion 16 by utilizing the surface tension or capillary phenomenon thereof, and therefore can prevent the oozed chemical solution from dropping downward from the nozzle 13 and contaminating the trigger lever 14. Therefore, when an operation such as pulling the trigger lever 14 sufficiently is performed, it is possible to prevent the chemical solution from adhering to the fingers of the user who operates the trigger lever 14.

< embodiment 2 >

Fig. 4 is a perspective view of an aerosol product 200 having a spray member 30 for aerosol of embodiment 2 of the present invention. Fig. 5 is a sectional view of an aerosol spray member 30 according to embodiment 2 of the present invention. The cross-sectional view of fig. 5 shows a cross section at a vertical plane including the ejection axis of the ejection member 30 for aerosol.

As shown in fig. 4, the aerosol product 200 includes, as with the aerosol product 100 of embodiment 1: an aerosol container 20 containing a chemical solution and an aerosol propellant, and an injection member 30 attached to the aerosol container 20. The aerosol container 20 includes a valve (not shown) and a valve stem (not shown) that are maintained in a closed state during non-operation, and is filled with a liquid medicine and an propellant as contents.

As shown in fig. 5, the injection member 30 in embodiment 2 includes: a base member 11, an actuator 12, a nozzle 13, and a trigger lever 14.

The base member 11 engages with a mounting portion (not shown) of the aerosol container 20 to couple the aerosol container 20 and the injection member 30. The base member 11 extends forward from the body portion 11a located above the aerosol container 20, and forms a liquid receiving portion 17, which is a leakage prevention unit of the aerosol injection member 30 according to embodiment 2 of the present invention.

The actuator 12 is a hollow member having a communication path inside, and has one end portion with an enlarged diameter to form a sleeve 15 into which the nozzle 13 is inserted. An ejection hole 13b is formed in an end surface 13a of the nozzle 13. The other end of the actuator 12 is coupled to a stem of the aerosol container 20, and the valve of the aerosol container 20 can be opened by depressing the actuator 12. When the valve of the aerosol container 20 is opened, the content of the aerosol container 20 flows from the stem into the communication passage of the actuator 12 and is ejected from the ejection hole 13 b.

The trigger lever 14 is rotatably attached to the base member 11, and a front end 14a thereof is disposed rearward of a surface including an end surface 13a indicated by a one-dot chain line in fig. 5. The trigger lever 14 is rotated by a user's operation to depress the actuator 12.

If the trigger lever 14 is not sufficiently tightened, for example, the tip 14a is held at the intermediate position of the movable range, the depression of the actuator 12 becomes insufficient. In a state where the actuator 12 is not sufficiently depressed, the valve is not in a fully opened state, and therefore the speed at which the contents of the aerosol container 20 flow out from the valve stem is insufficient, and for example, a part of the drug solution is dropped in the vicinity of the end surface 13a of the nozzle 13 without being vigorously ejected. At this time, for example, when the aerosol product is directed obliquely upward, a part of the chemical solution which is not vigorously sprayed and falls down in the vicinity of the end surface 13a of the nozzle 13 may be scattered in the vicinity of the trigger lever 14 and may adhere to the fingers of the user. In the ejection member 30 according to embodiment 2, the chemical liquid dropped in the vicinity of the end surface 13a is received in the liquid receiving portion 17, thereby preventing the chemical liquid from adhering to the user's fingers.

[ liquid-receiving portion ]

As shown in fig. 5, the liquid receiving portion 17 is formed below the end surface 13a of the nozzle 13 so as to intersect a surface (indicated by a one-dot chain line) including the end surface 13 a. Preferably, a side wall 18 is provided continuously with the liquid receiving portion 17. The side wall portions 18 extend upward from both sides of the liquid receiving portion 17, and are formed at positions laterally covering the end surfaces 13 a. By forming the liquid receiving portion 17 below the end surface 13a, particles of the chemical liquid ejected forward from the ejection orifice 13b and falling over a minute flying distance can be received by the liquid receiving portion 17. Further, since the side wall portions 18 are formed on both sides of the end surface 13a, among the particles of the chemical solution injected with insufficient injection force, the particles which are scattered diagonally from the injection port 13b can be attached to the side wall portions 18 before falling, guided downward along the side wall portions 18, and received by the liquid receiving portion 17.

Preferably, an inclined surface 17a having a front side inclined downward is formed on the upper surface of the liquid receiving portion 17. Preferably, the inclined surface 17a has: a steep inclined surface portion 17b and a gentle inclined surface portion 17c extending from the tip of the steep inclined surface portion 17 b. Since the inclined surface 17a is formed on the upper surface of the liquid receiving portion 17, the chemical liquid received by the liquid receiving portion 17 is prevented from flowing backward, and therefore, the chemical liquid can be prevented from adhering to the finger of the user who operates the trigger lever 14 disposed rearward of the end surface 13 a. In particular, while the received chemical liquid is reliably prevented from flowing backward by the steep inclined surface 17b, a large amount of chemical liquid can be held in the gentle inclined surface 17c for a long time.

As described above, in the case where the operation such as the sufficient tightening of the trigger lever 14 is not performed, the aerosol injection member 30 and the aerosol product 200 according to embodiment 2 of the present invention can receive the liquid chemical that has fallen in the vicinity of the end surface 13a of the nozzle 13 in the liquid receiving portion 17 even if a part of the liquid chemical has fallen in the vicinity of the end surface of the nozzle without being vigorously injected, and therefore the liquid chemical can be prevented from scattering in the vicinity of the trigger lever 14 and contaminating the trigger lever 14. Therefore, when an operation such as pulling the trigger lever 14 sufficiently is performed, it is possible to prevent the chemical solution from adhering to the finger of the user who operates the trigger lever 14.

< embodiment 3 >

Fig. 6 is an assembly view of an aerosol product 300 having a spray member 40 for aerosol according to embodiment 3 of the present invention. The aerosol product 300 includes the same components as the aerosol product 100 of embodiment 1: an aerosol container 20 containing a chemical solution and an aerosol propellant, and an injection member 40 attached to the aerosol container 20.

The aerosol container 20 includes: a valve is provided to maintain a closed state during non-operation, and a container main body 21 filled with a chemical liquid and a propellant as contents, a mounting portion 22, and a valve stem 23 connected to the valve and biased upward.

The injection member 40 in embodiment 3 includes: a base member 11, an actuator 12, a nozzle 13, and a trigger member 41.

The base member 11 is engaged with the mounting portion 22 of the aerosol container 20, and connects the aerosol container 20 and the ejection member 40. A bearing 19d is formed at a position on the rear side of the position where the valve stem 23 is inserted when coupled to the aerosol container 20.

The actuator 12 is a curved hollow member having a communication path inside, and has one end portion with an enlarged diameter to form a sleeve 15 into which the nozzle 13 is inserted. An ejection hole 13b is formed in an end surface 13a of the nozzle 13. The actuator 12 is biased upward by its other end portion being coupled to the valve stem 23 of the aerosol container 20. On both sides of the curved portion of the actuator 12, cylindrical shafts 19a are provided to protrude laterally.

The trigger member 41 is a member formed long in the front-rear direction, and has a trigger lever 14 extending downward from a position 41a at the front end. A bell-shaped bearing 19b having an arc-shaped upper side is formed rearward of the position 41a from which the trigger lever 14 extends. The bearing 19b is formed such that the diameter of the arc portion is larger than the diameter of the shaft 19a of the actuator 12, and the actuator 12 biased upward is locked from above by slidably receiving the shaft 19a along the arc portion. A cylindrical shaft 19c is provided to protrude laterally on both sides in the vicinity of the rear end of the trigger member 41. The trigger member 41 presses down the actuator 12 by a lever having the shaft 19c as a fulcrum when the trigger lever 14 is pulled, by pivotally mounting the shaft 19c to a bearing 19d formed in the base member 11 so as to be rotatable. The joint including the shaft 19a and the bearing 19b and the joint including the shaft 19c and the bearing 19d constitute the link mechanism 19 as the liquid leakage preventing means of the aerosol injection member 40 according to embodiment 3 of the present invention.

[ Link mechanism ]

When the trigger lever 14 is operated, for example, if the posture of the end surface 13a of the nozzle 13 is changed to face downward in conjunction with the rotation of the trigger lever 14, the chemical liquid attached to the end surface 13a of the nozzle 13 is likely to drip downward. In the ejection member 40 in embodiment 3, when the trigger lever 14 is pulled, the change in the posture of the end surface 13a is suppressed by the link mechanism 19, thereby preventing the chemical liquid from adhering to the user's finger due to liquid leakage.

Fig. 7 is an explanatory diagram of the link mechanism 19 of the ejection member 40 for aerosol according to embodiment 3 of the present invention. Fig. 7 (a) is a cross-sectional view of the aerosol injection member 40 in a state where the trigger lever 14 is not operated, and fig. 7 (b) is a cross-sectional view of the aerosol injection member 40 in a state where the trigger lever 14 is pulled.

In the state shown in fig. 7 (a), the bearing 19b is pushed up by the shaft 19a by the upward force applied by the actuator 12. As a result, the trigger member 41 is in a posture with its front side upward, and the shaft 19a is caught at the front end of the arc portion of the bearing 19 b. In this state, the injection axis a1 of the injection hole 13b formed in the end surface 13a is parallel to the longitudinal direction a2 of the trigger member 41.

When the trigger lever 14 is pulled in the state shown in fig. 7 (a), the trigger member 41 pivots leftward about the shaft 19c as a fulcrum. The trigger member 41 changes its posture by this rotation to the state shown in fig. 7 (b), and the longitudinal direction a2 is directed downward from the state shown in fig. 7 (a). At this time, the shaft 19a is pressed down by the bearing 19b, but is slidably stopped by the arc portion of the shaft 19b, so that the shaft 19a slides along the arc portion of the bearing 19b up to the rear end of the arc portion as shown in fig. 7 (b). As a result, the rotation of the trigger member 41 is transmitted to the actuator 12 as a linear motion, and the injection axis a1 of the injection hole moves downward in parallel without changing its orientation. That is, when the trigger lever 14 is operated, the nozzle 13 moves in parallel in the downward direction without changing the posture of the end surface 13a from the state shown in fig. 7 (a) to the state shown in fig. 7 (b).

As described above, in the aerosol injection member 40 and the aerosol product 300 according to embodiment 3 of the present invention, since the change in the posture of the end surface 13a can be suppressed by the link mechanism 19 when the trigger lever 14 is pulled, the chemical solution adhering to the end surface 13a of the nozzle 13 can be prevented from dripping downward, and the trigger lever 14 can be prevented from being contaminated.

The link mechanism 19 is not limited to the configuration shown in fig. 6 and 7, and may be another configuration as long as the nozzle 13 is moved downward in parallel without changing the posture of the end surface 13a when the trigger lever 14 is operated by transmitting the rotation of the trigger member 41 to the actuator 12 as a linear motion.

[ other examples ]

The structure described in embodiments 1 to 3 above may be modified as long as the effect of the present invention of preventing the chemical from adhering to the fingers of the user when the trigger lever is not sufficiently pulled or the like is achieved. For example, the liquid reservoir 16 described in embodiment 1, the liquid receiver 17 described in embodiment 2, and the link mechanism 19 described in embodiment 3 each have a function as a leakage prevention unit for preventing leakage from the nozzle to the trigger lever side, and do not impair the functions of each other. Here, the trigger-type aerosol injection member and the aerosol product having the injection member may be configured to include 2 or more of the liquid reservoir 16, the liquid receiver 17, and the link mechanism 19.

In particular, when the end surface 13a of the nozzle 13 moves rearward of the formation position of the liquid receiving portion 17 in accordance with the operation of the trigger lever 14, there is a possibility that a part of the liquid chemical falling in the vicinity of the end surface 13a is not received by the liquid receiving portion 17 and is scattered. However, the link mechanism 19 suppresses not only the posture change of the end surface 13a of the nozzle 13 but also the rearward movement of the end surface 13 a. Therefore, in the trigger type aerosol injection member having both the liquid receiving portion 17 and the link mechanism 19 and the aerosol product having the injection member, it is easy to configure that the end surface 13a of the nozzle 13 is always positioned above the liquid receiving portion 17 even if the trigger lever 14 is operated.

[ industrial applicability ]

The trigger-type aerosol injection member and the aerosol product of the present invention can be used for insecticidal, insect-repellent, deodorant, and other applications.

[ notation ] to show

10. 30, 40: aerosol injection member

13: nozzle with a nozzle body

13 a: end face

13 b: injection hole

13 c: cone part

13 d: conical surface

13 e: peripheral surface

14: trigger operating rod

15: sleeve barrel

15 a: end part

15 b: inner peripheral surface

16: liquid storage part (liquid leakage prevention unit)

16 a: trough part

16 b: thin gap part

17: liquid receiving part (liquid leakage prevention unit)

17 a: inclined plane

17 b: acute inclined plane part

17 c: slow slope part

18: side wall part

19: link mechanism (liquid leakage prevention unit)

100. 200 and 300: aerosol product

Claims

1. A trigger-type aerosol injection member is provided with:

a nozzle having an injection hole formed in an end surface thereof;

a trigger lever which is disposed rearward of an end surface of the nozzle and which is operated by a user to eject the contents of the aerosol container from the nozzle;

a trigger member formed in such a manner as to extend out of the trigger lever;

a base member engaged with the aerosol container; and

a liquid leakage prevention unit for preventing the leakage of the content from the nozzle to the trigger lever side,

wherein a shaft protruding from the trigger member is pivotally mounted on a bearing formed on the base member, whereby the trigger lever is rotatably mounted on the base member,

the liquid leakage prevention unit includes a liquid receiving portion provided in the base member and provided in front of and below the end surface of the nozzle,

the liquid receiving portion has an inclined surface inclined forward and downward from the nozzle,

the inclined surface has a steep inclined surface portion for preventing the content of the leakage from flowing backward, and a gentle inclined surface portion extending forward from the steep inclined surface portion for holding the content of the leakage.

2. The trigger-type spray member for aerosol according to claim 1, wherein,

the trigger-type aerosol injection member includes a sleeve into which the nozzle is inserted,

the liquid leakage prevention unit further includes a liquid reservoir formed between the nozzle and the sleeve.

3. A trigger type spray member for aerosol according to claim 2,

the nozzle has a tapered portion that reduces in diameter toward the spraying direction of the contents,

the liquid reservoir includes a groove portion formed between a tapered surface of the tapered portion and an inner peripheral surface of the sleeve.

4. The trigger-type ejection member for aerosol according to claim 2 or 3, wherein,

the liquid reservoir includes a narrow gap portion formed between an outer peripheral surface of the nozzle and an inner peripheral surface of the sleeve.

5. The trigger-type ejection member for aerosol according to claim 4, wherein,

the distance from the outer peripheral surface of the nozzle to the inner peripheral surface of the sleeve is 0.01-1.0 mm.

6. The trigger-type ejection member for aerosol according to claim 2 or 3, wherein,

the end surface of the nozzle is disposed at a position retreated from the end portion of the sleeve,

the liquid reservoir includes an inner peripheral surface of the sleeve from an end of the sleeve to an end surface of the nozzle.

7. The trigger-type spray member for aerosol according to claim 1, wherein,

the liquid leakage prevention unit further includes a side wall portion extending upward from the liquid receiving portion and covering a side of an end surface of the nozzle.

8. The trigger-type ejection member for aerosol according to claim 1 or 2, wherein,

the liquid leakage prevention unit further includes a link mechanism that moves the nozzle in parallel in the vertical direction in conjunction with the movement of the trigger lever without changing the posture of the end surface of the nozzle when the user operates the trigger lever.

9. An aerosol product is provided, which comprises a liquid carrier,

spray member for aerosol of the trigger type according to any one of claims 1 to 8.