Aerosol button

Abstract

To provide an aerosol button capable of uniformly maintaining an ejection pattern even at the time of wide-angle ejection with a simple constitution, stabilizing the ejection pattern without clogging an ejection flow passage, and allowing a production cost to be suppressed.SOLUTION: An aerosol button 100 has: a button body 110 which has a stem fitting part 112, a body part 111 having a communication flow path 113, and an ejection cylindrical part 114 having an ejection flow path 115; and a nozzle hole member 120 hanging over the ejection cylindrical part 114. The nozzle hole member 120 has a nozzle hole top surface 121, a nozzle hole cylindrical wall 124, and a first nozzle hole 122 and a second nozzle hole 123 penetrating the nozzle hole top surface 121. The first nozzle hole 122 is disposed at a position always communicating with the ejection flow path 115. The second nozzle hole 123 is disposed at a position connectable to the ejection flow path 115 via a branch flow path 126. The branch flow path 126 is openable / closable by a change in a relative position of the ejection cylindrical part 114 and the nozzle hole member 120.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an aerosol button having a button body having a stem fitting portion that fits onto the stem of an aerosol container, a main body portion provided with a communicating flow path extending upward from the stem fitting portion, and an ejection tube portion provided with an ejection flow path extending from the communicating flow path, and an ejection nozzle member connected to the ejection flow path. [Background technology]

[0002] Conventionally, various types of aerosol buttons have been proposed, and as an aerosol button capable of switching spray patterns, for example, the aerosol button (trigger-type spray mechanism) using a spray pattern variable nozzle member described in Patent Document 1 is well known.

[0003] The aerosol button (trigger-type spray mechanism 20) known from Patent Document 1 has a main body portion (21) and a trigger portion (22) provided inside the main body portion (21). The main body portion (21) is fitted and fixed to the aerosol container. The trigger portion (22) is connected to a stem (discharge stem) to communicate the flow paths (vertical flow path 25, horizontal flow path 26). When a lever portion (24) provided on the trigger portion (22) is actuated, the stem (discharge stem) is pressed downward, causing the contents to be sprayed through the flow paths (vertical flow path 25, horizontal flow path 26). A spray pattern variable nozzle member (10) is connected to the outlet side of the lateral flow passage (26). By rotating the tip nozzle portion (12) of the nozzle member (10) to switch the communication between a through hole (14) that can communicate with the through hole (13) in an expanding direction (diagonal direction) and a through hole (15) that can communicate with the through hole (13) in a straight direction, the spray pattern can be switched between a straight spray (straight spray state) and a wide-angle spray (wide-open spray state). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-199501 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the aerosol button known from Patent Document 1 still has room for improvement.

[0006] In other words, the aerosol button known from Patent Document 1 switches all of the through holes through which the contents are sprayed depending on whether the spray is a straight-line spray or a wide-angle spray. Therefore, when spraying at a wide angle, the contents may not be sprayed in the center of the spray pattern, which could result in the contents not being sprayed evenly onto the target. In addition, the through hole (14), which can communicate with the through hole (13) in the radial expansion direction (diagonal direction), communicates with the through hole (13) while the rotation shaft side of the nozzle member is blocked, thereby narrowing the actual injection flow path. This could lead to the injection pattern becoming unstable depending on the molding accuracy and assembly accuracy of the parts, or the communication portion between the through hole (13) and the through hole (14) becoming narrow and becoming clogged.

[0007] In addition, since the nozzle member is made up of many parts and the assembly is complicated, the number of operations required for producing the aerosol buttons increases, which may increase the burden on the workers.

[0008] The present invention aims to solve these problems and provide an aerosol button with a simple configuration that can maintain a uniform spray pattern even when spraying at a wide angle, stabilize the spray pattern without clogging the spray flow path, and reduce production costs. [Means for solving the problem]

[0009] The aerosol button of the present invention is an aerosol button having a button body including a stem fitting portion that fits onto a stem of an aerosol container, a main body portion provided with a communication flow path extending upward from the stem fitting portion, and an injection tube portion provided with an injection flow path extending from the communication flow path, and an injection port member that covers a tip end of the injection tube portion, the injection port member having an injection port top surface that can come into contact with the tip end of the injection tube portion, an injection port tube wall that extends cylindrically from an outer periphery of the injection port top surface, and a first injection port that penetrates the injection port top surface. The nozzle has a first injection hole and a second injection hole arranged around the first injection hole and penetrating the top surface of the nozzle, the first injection hole being arranged in a position where it is always connected to the injection flow path when the nozzle member is connected to the injection tube portion, and the second injection hole being arranged in a position where it can be connected to the injection flow path via a branch flow path when the nozzle member is connected to the injection tube portion, and the branch flow path is configured to be openable and closable depending on a change in the relative position between the injection tube portion and the nozzle member, thereby solving the above problem. Effect of the Invention

[0010] In the aerosol button of the invention of claim 1, the first injection hole is positioned so that it is always in communication with the injection flow path when the nozzle member is connected to the injection tube portion, and the second injection hole is positioned so that it can be connected to the injection flow path via a branch flow path when the nozzle member is connected to the injection tube portion, and the branch flow path is configured to be openable and closable by changing the relative position of the injection tube portion and the nozzle member.Therefore, by simply moving the nozzle member relative to the injection tube portion, it is possible to easily switch between injection only from the first injection hole and injection from both the first injection hole and the second injection hole. This allows, for example, the first injection hole to be oriented in a way suitable for straight-line injection, and the second injection hole to be oriented in a way suitable for wide-angle injection; when only straight-line injection is desired, the branch flow path can be blocked to spray the contents only from the first injection hole, and when wide-angle injection is desired, the branch flow path can be opened to spray the contents from both the first and second injection holes.This results in a wide injection pattern, while also ensuring that the contents are sprayed stably even in the center of the injection pattern. In addition, the aerosol button is composed of a button body having an ejection tube portion and an ejection nozzle member that covers the tip of the ejection tube portion, and since it has a small number of parts and is easy to assemble, production costs can be reduced.

[0011] According to the configuration described in claim 2, the branch flow path is formed between the top surface of the nozzle and the tip of the nozzle tube portion, so that the branch flow path can be easily opened and closed by moving the nozzle member back and forth in the axial direction of the nozzle tube portion. In addition, since the volume of the branched flow path changes depending on the distance between the top surface of the nozzle and the tip of the injection tube portion, the amount of contents injected from each of the first injection hole and the second injection hole can be easily changed by adjusting the amount of movement of the nozzle member. Furthermore, since the branch flow passage can be formed widely between the top surface of the nozzle and the tip of the nozzle tube portion, the inside of the branch flow passage will not become clogged with the contents. According to the configuration described in claim 3, the nozzle member is configured to be movable back and forth in the axial direction of the injection tube portion, so that the branch flow path can be easily opened and closed simply by changing the relative axial position between the nozzle member and the injection member.

[0012] According to the configuration described in claim 4, a male thread portion is provided on the outer peripheral surface of the injection tube portion, and a female thread portion that can be threadedly engaged with the male thread portion is provided on the inner peripheral surface of the injection tube wall.Therefore, the branch flow path can be easily opened and closed by rotating the injection tube member relative to the injection tube portion with the injection tube member and the injection tube portion threadedly engaged with each other. Furthermore, the volume of the branch flow passage can be easily adjusted by changing the number of rotations of the nozzle member relative to the injection tube portion. According to the configuration described in claim 5, the injection flow path has a second injection flow path penetrating the injection tube portion in a direction intersecting the central axis of the injection tube portion, and the branch flow path is configured to be able to connect the second injection hole to the second injection flow path by rotating the injection tube portion and the nozzle member relative to each other. Therefore, for example, if the branch flow path is provided in the nozzle tube wall in the form of a groove, the contents can be easily injected from the second injection hole via the second injection flow path by rotating the injection tube portion relative to the nozzle member to align the branch flow path with a position that connects it to the second injection flow path. Furthermore, the injection port member does not move back and forth in the axial direction of the injection tube portion, and the injection pattern can be changed without changing the position of the first injection hole.

[0013] According to the configuration described in claim 6, the nozzle member has two second injection holes, and the two second injection holes are arranged opposite each other with the first injection hole in between. Therefore, when the branch flow path is opened to switch to wide-angle injection, a wide elliptical injection pattern can be stably obtained. According to the configuration described in claim 7, the nozzle member has three or more second injection holes, and the multiple second injection holes are evenly arranged circumferentially around the first injection hole. Therefore, when the branch flow path is opened to switch to wide-angle injection, a wide, approximately circular injection pattern can be stably obtained.

[0014] According to the configuration described in claim 8, the nozzle member has a third nozzle hole arranged around the second nozzle hole and penetrating the top surface of the nozzle hole, the third nozzle hole is arranged in a position where it can be connected to the injection flow path via the second branch flow path when the nozzle member is connected to the injection tube portion, and the second branch flow path is configured to be openable and closable by changing the relative position between the injection tube portion and the nozzle member, the third nozzle hole is arranged around the first nozzle hole, and the distance from the first nozzle hole to the third nozzle hole is longer than the distance from the first nozzle hole to the second nozzle hole, so that by opening the second branch flow path in addition to the branch flow path, an even wider injection pattern can be stably obtained. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view of an aerosol button 100 according to one embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view of an aerosol button 100 according to one embodiment of the present invention. [Diagram 3] 1 is a cross-sectional perspective view of an ejection port member 120 of an aerosol button 100 according to an embodiment of the present invention. [Figure 4] 1 is a partial cross-sectional view showing an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention, with the nozzle member 120 moved to a straight spray position. [Diagram 5]1 is a partial cross-sectional view showing a straight spray state of an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention. [Figure 6] 1 is a partial cross-sectional view showing an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention, with the nozzle member 120 moved to a wide-angle spray position. [Figure 7] 1 is a partial cross-sectional view showing a wide-angle spray state of an aerosol product P equipped with an aerosol button 100 according to one embodiment of the present invention. [Figure 8] 1 is an enlarged cross-sectional view of part A showing a wide-angle spray state of an aerosol product P equipped with an aerosol button 100 according to one embodiment of the present invention. [Figure 9] 1 is an enlarged cross-sectional view of part A of an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention, in which a third injection hole is formed, showing the position of a first form. [Figure 10] 13 is an enlarged cross-sectional view of part A of an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention, in which a third injection hole is formed, showing the position of the second configuration. FIG. [Figure 11] 13 is an enlarged cross-sectional view of part A of an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention, in which a third injection hole is formed, showing a third position. FIG. [Figure 12] 1 is a partial cross-sectional view of an aerosol product P equipped with an aerosol button 100 according to an embodiment of the present invention, in which an annular recess 117b is formed. [Figure 13] 1 is a partial cross-sectional view of an aerosol product P equipped with an aerosol button 100 according to one embodiment of the present invention, in which an annular protrusion 129 is formed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] An aerosol button 100 according to one embodiment of the present invention will now be described with reference to the drawings.

[0017] As shown in Figures 1 to 4, the aerosol button 100 of one embodiment of the present invention has a button body 110 having a stem fitting portion 112 that fits into the stem S of an aerosol container C, a main body portion 111 provided with a communicating flow path 113 extending upward from the stem fitting portion 112, and an injection tube portion 114 provided with an injection flow path 115 extending laterally from the communicating flow path 113, and an injection nozzle member 120 that covers the tip of the injection tube portion 114.

[0018] The button body 110 further has a button top surface 119 provided on the upper part, a male thread portion 116 formed on the outer peripheral surface of the injection tube portion 114, an annular seal portion 117 provided on the tip side of the injection tube portion 114 relative to the male thread portion 116, and a tube tip surface 118 formed at the tip of the injection tube portion 114, and the annular seal portion 117 is formed in an umbrella shape that expands in diameter toward the tip side of the injection tube portion 114.

[0019] The nozzle member 120 has a nozzle top surface 121 that can come into contact with the cylindrical portion tip surface 118 , and a nozzle cylindrical wall 124 that surrounds the outer circumferential surface of the injection cylindrical portion 114 . The nozzle top surface 121 is provided with a first injection hole 122 that connects the inside and outside of the center of the nozzle top surface 121, three second injection holes 123 provided around the first injection hole, and branch flow paths 126 that connect to each of the three second injection holes 123. The nozzle tube wall 124 has a female thread portion 125 formed on the inner surface of the nozzle tube wall 124 and a rotation protrusion 127 formed on the outer surface of the nozzle tube wall 124, and the female thread portion 125 is configured to be able to threadably engage with the male thread portion 116.

[0020] The nozzle member 120 can be attached and fixed to the button body 110 by covering the nozzle tube portion 114 so that the female thread portion 125 is threadedly engaged with the male thread portion 116. The annular seal portion 117 comes into contact with the inner peripheral surface of the nozzle tube wall 124 of the nozzle member 120 placed over the injection tube portion 114 all around to fill in any gaps. In addition, by rotating the nozzle member 120 relative to the injection tube portion 114, the engagement state between the female thread portion 125 and the male thread 116 changes, and the nozzle member 120 can move forward and backward in the axial direction of the injection tube portion 114, allowing the nozzle top surface 121 to come into contact with / disengage from the tube portion tip surface 118.

[0021] The aerosol product P is obtained by attaching the aerosol button 100 via a stem fitting portion 112 to the stem S of an aerosol container C filled with a content consisting of a content liquid and a propellant. The propellant can be selected from liquefied gas, compressed gas, and a mixture of liquefied gas and compressed gas. Here, the case where liquefied gas is used will be described.

[0022] Next, the manner in which the content is sprayed by the aerosol button 100 according to one embodiment of the present invention will be described with reference to FIGS.

[0023] First, as shown in FIG. 4, spraying of the contents in a state in which the nozzle top surface 121 and the cylindrical tip surface 118 are in contact with each other will be described. When the nozzle top surface 121 and the tubular tip surface 118 are in contact with each other, the branch flow path 126 is cut off from communication with the ejection flow path 115. Therefore, when the button top surface 119 is pressed to push down the stem S, the contents ejected from the stem S passes through the communicating flow path 113 and the ejection flow path 115, as shown in Figure 5, and are ejected only from the first ejection hole 122 which is connected to the ejection flow path 115. This allows the aerosol button 100 to spray the content in a straight line from the first spray hole 122 (straight spray). Since the propellant filled in the aerosol container C is a liquefied gas, the liquefied gas ejected from the stem S together with the liquid contents travels through the spray flow path 115 in a liquid state, and when ejected from the first spray hole 122, it vaporizes and expands, spraying the liquid contents in a mist.

[0024] Next, the ejection of the contents in a state where the nozzle top surface 121 is separated from the cylindrical tip surface 118 will be described.

[0025] First, when the nozzle member 120 is rotated in the direction of removal from the injection tube portion 114 by hooking the rotation protrusion 127 with a finger, the nozzle top surface 121 is removed from the tube portion tip surface 118 as shown in FIG. 6, and the branch flow path 126 is connected to the injection flow path 115. In this state, when the button top surface 119 is pressed to push down the stem S, the contents ejected from the stem S pass through the communicating flow path 113 and the spray flow path 115, as shown in Figures 7 and 8, and the contents are sprayed in a straight line from the first spray hole 122 which is directly connected to the spray flow path 115 (straight-line spray), and the contents can also be sprayed in a diffusion direction from the three second spray holes 123 which are connected to the spray flow path 115 via branch flow paths 126 (wide-angle spray).

[0026] Since the three second injection holes 123 are evenly arranged around the first injection hole 122 in the circumferential direction, a wide, approximately circular injection pattern can be stably obtained. In addition, since the contents are sprayed from the first injection hole 122 together with the second injection hole 123, the contents can be sprayed stably and reliably even in the center of the spray pattern. This allows the contents to be easily sprayed evenly over a wide area by diffusing spraying, even when applying the contents to an application target.

[0027] Furthermore, by rotating the nozzle member 120 and adjusting the distance between the nozzle top surface 121 and the tubular tip surface 118, the amount of contents supplied from the spray flow path 115 to the branch flow path 126 can also be adjusted, so that the amount of contents sprayed from the first spray hole 122 and the amount of contents sprayed from the second spray hole 123 can be changed to the desired ratio, and the same aerosol button 100 can be used with different spray forms to suit the object to be sprayed. Furthermore, by arranging the second injection holes 123 opposite to each other with the first injection holes 122 in between, when the branch flow passage 126 is opened to switch to wide-angle injection, a wide elliptical injection pattern can be stably obtained. Furthermore, by arranging the second injection hole 123 so that it is biased toward a portion of the periphery of the first injection hole 122, the injection direction of the wide-angle injection itself can be adjusted by the rotation angle of the nozzle member 120 without changing the orientation of the aerosol product itself.

[0028] 9 to 11, by arranging the third injection hole 133 communicating with the second branch flow passage 132 outside the second injection hole 123, and providing the annular protruding portion 117c that abuts on the first inner circumferential surface 130 of the injection port member 120 over its entire circumference and the annular seal portion 117 that abuts on the second inner circumferential surface 131 over its entire circumference, the relative position of the injection port member 120 can be changed to a position of the first form in which the cylindrical portion tip surface 118 and the injection port top surface 121 abut against each other to communicate only the first injection hole 122 with the injection flow passage 115, The injection pattern can be switched between three stages by adjusting the position to three forms: a second form in which the nozzle top surface 121 is detached from the cylindrical tip surface 118 to connect the first injection hole 122 and the second injection hole 123 (branch flow path 126) to the injection flow path 115; and a third form in which the second inner circumferential surface 131 is detached from the annular seal portion 117 to connect the first injection hole 122, the second injection hole 123 (branch flow path 126) and the third injection hole 133 (second branch flow path 132).

[0029] In addition, since the inner surface of the nozzle tube wall 124 and the outer surface of the injection tube portion 114 abut all around at the annular seal portion 117, the contents flowing from the injection flow path 115 toward the branch flow path 126 will not flow into the female thread portion 125. Furthermore, since the aerosol button 100 is composed of the button body 110 and the nozzle member 120, the structure is simple and the assembly is easy, which reduces production costs and improves production efficiency. Alternatively, instead of providing the annular seal portion 117, for example, as shown in FIG. 12, a groove-shaped annular recess 117b may be provided on the tip side of the injection tube portion, and an O-ring B may be attached to the annular recess 117b so that the O-ring B abuts against the inner surface of the injection tube wall 125 over its entire circumference.

[0030] In addition, the injection tube portion 114 and the nozzle member 120 do not have to be configured so that the male threaded portion is threadedly engaged with the female threaded portion. For example, as shown in Figure 13, a groove-shaped flow passage 128 communicating with the second injection hole 123 and an annular protrusion 129 that can fit into the annular recess 117 may be formed on the inner surface of the nozzle tube wall 124, and a second injection flow passage 115a that penetrates from the injection flow passage 115 to the outer peripheral surface of the injection tube portion 114 may be formed on the outer peripheral surface of the injection tube portion 114, closer to the tube tip surface 118 than the annular recess 117. When the injection tube member 120 is placed over the injection tube portion 114, the annular protrusion 129 may be fitted into the annular recess 117 to rotatably fit therewith. As a result, by rotating the nozzle member 120 relative to the injection tube portion 114 without moving the nozzle member 120 back and forth in the axial direction of the injection tube portion 114, the communication between the second injection flow path 115a and the groove-shaped flow path 128 can be switched, and the injection or non-injection of the contents from the second injection hole 123 can be switched.

[0031] Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design modifications can be made without departing from the present invention described in the claims.

[0032] In the above-described embodiment, the second injection holes are described as being three holes evenly arranged around the first injection hole, but the configuration of the second injection holes is not limited to this, and for example, four or more holes may be evenly arranged around the first injection hole. Further, in the above-described embodiment, it has been described that one first injection hole is formed, but the number of the first injection hole is not limited to this, and for example, two or more first injection holes may be provided.

[0033] In addition, in the above-described embodiment, the injection flow passage is described as being formed to extend laterally from the communicating flow passage, but the configuration of the injection flow passage and the injection tube portion is not limited to this, and for example, the injection flow passage and the injection tube portion may be formed to extend upward from the communicating flow passage. In addition, in the above-described embodiment, the three second injection holes are described as being evenly arranged circumferentially around the first injection hole, but the positions of the second injection holes are not limited to this. For example, two of the three second injection holes may be arranged on a straight line sandwiching the first injection hole, and the remaining second injection hole may be arranged at a position equidistant from the two second injection holes. [Explanation of symbols]

[0034] 100 ··· Aerosol button 110 ··· Button body 111 Main body 112 Stem fitting portion 113 .... communicating flow path 114... Injection cylinder part 115 Injection passage 115a...second injection passage 116 Male thread 117 Annular seal part 117b Annular recess 117c... annular protrusion 118...Cylinder tip end surface 119 ··· Button top 120 ... Nozzle member 121 .... Top of nozzle 122 ... 1st injection hole 123 ... 2nd injection hole 124 ... nozzle tube wall 125 Female thread 126 Branch flow path 127...Rotation protrusion 128 · · Groove channel 129 Annular protrusion 130... 1st inner peripheral surface 131 ... 2nd inner peripheral surface 132 Second branch flow path 133... 3rd injection hole B. O-ring C: Aerosol container S··· Stem P... Aerosol products

Claims

1. An aerosol button comprising: a button body having a stem fitting portion that fits onto a stem of an aerosol container, a main body portion provided with a communication flow path extending upward from the stem fitting portion, and an injection tube portion provided with an injection flow path extending from the communication flow path; and an injection port member that covers a tip end of the injection tube portion, the nozzle member has a nozzle top surface capable of abutting against a tip of the injection tube portion, a nozzle tube wall extending in a cylindrical shape from an outer circumferential edge of the nozzle top surface, a first injection hole penetrating the nozzle top surface, and a second injection hole disposed around the first injection hole penetrating the nozzle top surface, the first injection hole is disposed at a position where the first injection hole always communicates with the injection flow passage when the injection nozzle member is connected to the injection tube portion, the second injection hole is disposed at a position connectable to the injection flow path via a branch flow path when the injection nozzle member is connected to the injection tube portion, The aerosol button, wherein the branch flow path is configured to be openable and closable by changing the relative position of the injection tube portion and the injection port member.

2. 2. The aerosol button according to claim 1, wherein the branch flow passage is formed between a top surface of the nozzle and a tip end of the nozzle tube portion.

3. 3. The aerosol button according to claim 2, wherein the nozzle member is configured to be movable back and forth in an axial direction of the injection tube portion.

4. A male screw portion is provided on an outer circumferential surface of the injection tube portion, 4. The aerosol button according to claim 3, wherein an internal thread portion capable of threadably engaging with the external thread portion is provided on an inner peripheral surface of the nozzle tube wall.

5. The ejection passage has a second ejection passage penetrating the ejection tube portion in a direction intersecting a central axis of the ejection tube portion, 2. The aerosol button according to claim 1, wherein the branch flow path is configured to be able to connect the second injection hole to the second injection flow path by rotating the injection tube portion and the nozzle member relative to each other.

6. The nozzle member has two of the second injection holes, 2 . The aerosol button according to claim 1 , wherein the two second injection holes are disposed opposite each other with the first injection hole interposed therebetween.

7. The nozzle member has three or more second injection holes, 2. The aerosol button according to claim 1, wherein the second injection holes are arranged at equal intervals in a circumferential direction around the first injection hole.

8. the nozzle member has a third injection hole disposed around the second injection hole and penetrating the nozzle top surface, the third injection hole is disposed at a position connectable to the injection flow passage via a second branch flow passage when the injection nozzle member is connected to the injection tube portion, The second branch flow passage is configured to be openable and closable by a change in a relative position between the injection tube portion and the injection port member, The third injection hole is disposed around the first injection hole, 2. The aerosol button according to claim 1, wherein a distance from the first injection hole to the third injection hole is longer than a distance from the first injection hole to the second injection hole.

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