JP5522945B2 - Aerosol button and aerosol button cap - Google Patents

Description

  The present invention relates to an aerosol button and an aerosol button cap for obtaining a wide-angle spray pattern.

  Among the nozzles for aerosol, there is a wide spray nozzle that sprays with a wider spray pattern than that of the straight spray specification. Conventional wide injection nozzles, like so-called swirl injection valves, try to obtain a wide-angle spray pattern by applying a swirling force to the flow of contents. It was not suitable for applying an aerosol content to a square-shaped application part.

  In order to solve such problems, for example, an aerosol nozzle 500 disclosed in Patent Document 1 is provided with a nozzle body 503 on the push button 501 shown in FIG. 8, and the inside of the aerosol container 507 and the nozzle body when the stem 505 is pressed. An outflow passage 509 for aerosol contents is formed in the nozzle body 503 in the axial direction, and an outflow tip 511 shown in FIG. 9 of the outflow passage 509 is formed in a circular shape. A diffusion split groove 513 orthogonal to the outflow passage 509 is formed on the outflow tip 511 from the outer surface of the nozzle body 503, and a bottom 515 of the diffusion split groove 513 is formed by cutting into the outflow tip 511. 513 and the outflow tip 511 of the outflow passage 509 are communicated to form a nozzle hole 517.

  When the push button 501 is pressed to open a valve mechanism (not shown) of the aerosol container 507, the aerosol content flows into the outflow passage 509 of the nozzle body 503 and reaches the outflow tip 511, thereby forming a circular outflow. It diffuses on the inner surface of the tip 511 and is ejected from the outflow tip 511 to the outside. The ejection direction is regulated on both sides by the diffusion dividing groove 513, diffuses only in the vertical direction, and is ejected in a sector shape having a constant thickness in the horizontal direction. Thereby, the spray pattern approximated to the rectangular shape was able to be obtained.

JP 2001-205145 A

However, since the aerosol nozzle 500, which is a conventional wide injection nozzle, is formed by narrowing the outflow tip 511 of the outflow passage 509 in a circular shape, the core of the mold is placed in the outflow direction of the outflow passage 509 during injection molding. The mold could not be released, and the core release direction was opposite to the outflow direction (in the direction of arrow K in FIG. 9). For this reason, since the core cannot be released from the push button 501 in which the stem insertion hole 519 perpendicular to the outflow passage 509 is formed, the push button 501 and the nozzle body 503 cannot be integrally injection molded. Therefore, after the push button 501 and the nozzle body 503 are separately formed, they must be assembled, which increases the number of parts and the number of assembly steps. Further, in the conventional aerosol nozzle 500, since the diffusion split groove 513 is formed from the outer surface 521 of the nozzle body 503 and is opened at both ends of the groove, the injection in the diffusion direction is not restricted, and the inner diameter of the internal outflow passage 509 is reached. There is a problem that the injection range cannot be adjusted unless it is changed.
The present invention has been made in view of the above situation, and provides an aerosol button and an aerosol button cap that can integrate a nozzle hole into a button body, reduce the number of parts and assembly steps, and can easily adjust the injection range. It is in.

The above object of the present invention is achieved by the following configuration.
(1) a stem insertion hole that opens in the first surface of the button body;
A first outflow passage extending by connecting a base end to a terminal end of the stem insertion hole and having a tip closed;
A second outflow path connecting the base end perpendicular to the first outflow path and having a distal end opened at the second surface;
A parallel inner wall surface sandwiching the axis of the second outflow passage at an equal distance smaller than the radius of the second outflow passage and extending in a direction orthogonal to the axis at a distance larger than the diameter of the second outflow passage. A diffusion recess opening in the second surface;
An aerosol button characterized by comprising:

  According to this aerosol button, the diffusion concave portion formed on the second surface where the second outflow passage opens is composed of parallel inner wall surfaces sandwiching the axis, and the reduced-diameter portion that is constricted in the outflow direction as in the conventional structure The core in the outflow direction can be released from the second outflow path. Thereby, the wide nozzle hole conventionally provided as a separate part can be formed integrally with the button body. In addition, in order to prevent the injection range from becoming too wide when injected, it is regulated by the diffusion recess, and the injection range can be changed by designing and adjusting the interval, extension length, and depth of the inner wall surface in the diffusion recess. Become.

(2) The aerosol button of (1),
An aerosol button, wherein a pair of inner surfaces that connect parallel inner wall surfaces of the diffusion recesses are curved surfaces that open inward.

  According to this aerosol button, the corners between the orthogonal inner wall surfaces when the pair of inner surfaces connecting the parallel inner wall surfaces are parallel planes (inner corner portions when the front view of the diffusion recess is rectangular) ) Is not formed, energy loss due to the mixed contents flowing into the corners does not occur, and a reduction in injection efficiency is prevented.

(3) The aerosol button according to (1) or (2),
The aerosol button according to claim 2, wherein the second surface is a projecting front end surface of a columnar body projecting coaxially with the axis from the button body.

  According to this aerosol button, the total length of the length of the second outflow path and the depth of the diffusion recess can be easily formed to a desired length by designing and adjusting the column length. Further, the nozzle hole can be arranged with a desired protruding length from the button body.

(4) An aerosol button cap, wherein the aerosol button according to any one of (1) to (3) and a cap body are integrally formed.

  According to this aerosol button cap, the cap body is further integrally formed on the aerosol button in which the nozzle body and the push button are integrated, so that the three parts of the nozzle body, the push button and the cap body which are separate members are one part. An aerosol button cap capable of being sprayed at a wide angle can be obtained.

  According to the aerosol button according to the present invention, the second outflow path orthogonal to the first outflow path is formed, and the diffusion recess is formed in the second surface opened in the second outflow path. The mold can be released in the direction, and the wide nozzle that has been conventionally provided as a separate part becomes unnecessary, and the nozzle can be molded as one part integrated with the button body. As a result, the number of parts and assembly man-hours can be reduced. In addition, by adjusting the design of only the diffusion recesses that change the interval, extension length, and depth of the parallel inner wall surfaces, the injection range can be easily designed and adjusted without changing the internal outflow path.

  According to the aerosol button cap of the present invention, since the aerosol button and the cap body are integrally formed, three separate parts can be made into one part, and the number of parts can be further reduced.

It is an external appearance perspective view of the aerosol button concerning the present invention. It is the front view which looked at the aerosol button shown in FIG. 1 from the nozzle side. It is AA sectional drawing of FIG. It is an expansion perspective view of the column part shown in FIG. It is a top view of an aerosol button cap. It is BB sectional drawing of FIG. It is a principal part enlarged view of the aerosol button shown in FIG. It is principal part sectional drawing of the aerosol container provided with the conventional wide injection nozzle. It is an expansion perspective view of the nozzle body shown in FIG.

Hereinafter, preferred embodiments of an aerosol button according to the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of an aerosol button according to the present invention.
The aerosol button 100 according to the present embodiment is used by being attached to the stem 505 of the aerosol container 507 shown in FIG. The aerosol container 507 contains the mixed contents of the stock solution and the propellant. When the aerosol button 100 attached to the stem 505 is pushed down in the direction of the arrow P, the valve mechanism below the stem is opened, and the mixed content is pushed up in the stem by the pressure of the propellant and injected from the nozzle 1. . The discharged mixed contents become fine mists and bubbles due to the rapid expansion of the propellant due to the reduced pressure. In the aerosol button 100 according to the present embodiment, the spray pattern obtained in this way is diffused only in a direction along one plane (for example, the vertical direction), and sprayed in a sector shape having a constant thickness in the horizontal direction. That is, the aerosol button 100 constitutes a wide spray nozzle that can obtain a wide-angle spray pattern that approximates a rectangular shape.

2 is a front view of the aerosol button shown in FIG. 1 viewed from the nozzle side, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
The button body 3 is formed in a cylindrical shape, and opens a stem insertion hole 7 on a lower surface (first surface) 5 on one end side in the axial direction. The entrance portion of the stem insertion hole 7 has a tapered taper 9 to facilitate the insertion of the stem 505. The base end of the first outflow passage 11 is connected to the terminal end (upper end) of the stem insertion hole 7, and the first outflow passage 11 extends in the extension direction of the stem insertion hole 7, and the distal end is closed as a closing portion 13. .

  In the present embodiment, the stem insertion hole 7 is formed by a straight hole having the same inner diameter. The first outflow passage 11 is also formed by a straight hole having the same inner diameter. The stem insertion hole 7 and the first outflow passage 11 are arranged on the same axis. Further, the stem insertion hole 7 and the first outflow path 11 can be released in the downward direction J (see FIG. 3) of the mold (not shown) because there is no enlarged diameter portion in the middle. The stem insertion hole 7 is formed with a larger diameter than the first outflow path 11, so that a step portion 15 is formed at the boundary with the first outflow path 11. This step portion 15 serves as a stopper for the stem 505 to be inserted.

  The button main body 3 is formed with a second outflow path 17 having a proximal end connected perpendicularly to the first outflow path 11 and having a distal end opened on a side surface that is the second surface of the button main body 3. In the present embodiment, this side surface serves as a protruding front end surface 21 of a column 19 described later. The second outflow passage 17 is formed by a straight hole having the same inner diameter. As shown in FIG. 3, the upper edge of the second outflow passage 17 coincides with the ceiling surface of the blocking portion 13.

  In the present embodiment, the second surface is the protruding tip surface 21 of the column 19 that protrudes from the button body 3 coaxially with the axis G (see FIG. 4) of the second outflow passage 17. A flat surface 25 parallel to the axis of the first outflow passage 11 is formed on the side surface 23 of the button main body 3, and the flat surface 25 has an inclined surface 27 at the lower end and continues to the side surface 23 of the button main body 3. As shown in FIG. 3, the protruding tip surface 21 is disposed slightly backward from the flat surface 25. The flat surface 25 is formed with a circular recess 29 centered on the axis G of the first outflow passage 11. That is, the column 19 protrudes from the center of the bottom surface 29 a of the circular recess 29.

FIG. 4 is an enlarged perspective view of the column portion shown in FIG.
A diffusion recess 31 is formed on the protruding front end surface 21 of the column body 19. The diffusion recess 31 sandwiches the axis G of the second outflow passage 17 at equal distances a and a smaller than the radius r of the second outflow passage 17 and is orthogonal to the axis G at a distance h larger than the diameter D of the second outflow passage 17. It has parallel inner wall surfaces 33, 33 extending along the vertical direction, and opens at the protruding tip surface 21. In other words, the diffusion recess 31 has a shape in which the center portions of the inner wall surfaces 33, 33 of the long cylindrical space are notched by the both-side arcs 17 a, 17 a of the second outflow passage 17.

  The diffusion recess 31 has a pair of inner surfaces that connect the parallel inner wall surfaces 33 and 33 with curved surfaces 35 and 35 that open inward. By setting the pair of inner surfaces to be curved surfaces 35 and 35 that open inward, the corners (diffusion) sandwiched between the orthogonal inner wall surfaces when the pair of inner surfaces that connect the parallel inner wall surfaces 33 and 33 are parallel planes. Each inner corner portion when the front view of the concave portion 31 is rectangular is not formed, energy loss due to the mixed content flowing into the corner portion does not occur, and a reduction in injection efficiency is prevented.

  In the button body 3, the total length of the length of the second outflow passage 17 and the depth b of the diffusion recess can be easily formed to a desired length by designing and adjusting the protruding length L of the column body 19. . Further, the nozzle hole 1 can be arranged from the button body 3 with a desired protruding length L.

More specifically, the above configuration can be set as follows.
That is, the diameter D of the second outflow passage 17 can be set to 0.5 to 2.0 mm. If the diameter D of the second outflow passage 17 is smaller than 0.5 mm, it is difficult to mold, and if it is larger than 2.0 mm, the necessary injection pressure of the mixed contents cannot be obtained.

  The depth b of the diffusion recess 31 can be 0.2 to 3.0 mm. If the depth b is less than 0.2 mm, it is difficult to mold, and the injection width of the mixed contents ejected from the nozzle 1 cannot be regulated, resulting in an injection pattern such as a circle or an ellipse. On the other hand, if it is deeper than 3.0 mm, foaming occurs due to the collision between the mixed contents and the inner wall surfaces 33 and 33.

  The groove width (a + a) of the diffusion recess 31 can be 0.15 to 0.5 mm. If the groove width (a + a) is narrower than 0.15 mm, molding is difficult. If the groove width (a + a) is larger than 0.5 mm, the pressure of the mixed contents is diffused, and the required injection distance to the target portion cannot be obtained.

Next, the operation of the aerosol button 100 configured as described above will be described.
When the aerosol button 100 in which the stem insertion hole 7 is inserted into the stem 505 of the aerosol container 507 is pressed and the valve mechanism of the aerosol container 507 is opened, the mixed content in the aerosol container flows into the first outflow path 11. The mixed content that has flowed in collides with the closed portion 13 to cause irregular vortex motion, and flows into the second outflow path 17. The mixed content flowing into the second outflow passage 17 flows into the diffusion recess 31 from the opening 17a (see FIG. 4) in the bottom surface 29a of the diffusion recess 31.

  In the diffusion recess 31, in addition to the channel cross-sectional area of the second outflow channel 17, the channel cross-sectional area increases by the gap between the inner wall surfaces 33 and 33. As a result, the mixed content that has flowed in is decompressed and expanded, and the peeling from the edge of the opening 17a also acts to diffuse as a fine mist. The diffused mixed contents are ejected to the outside from the nozzle hole 1, and the ejection direction is regulated on both sides and up and down by the diffusion recess 31, and diffuses only in the up and down direction or the left and right direction to form a sector having a certain thickness. Be injected.

  In this aerosol button 100, the diffusion recess 31 formed on the projecting distal end surface 21 of the second outflow passage 17 is composed of parallel inner wall surfaces 33, 33 sandwiching the axis G, and is narrowed in the outflow direction as in the conventional structure. There is no reduced-diameter portion to be formed, and the core of the outflow direction M (see FIG. 4) can be released from the second outflow path 17. Thereby, the wide nozzle hole conventionally provided as a separate part can be formed integrally with the button body 3. In addition, the diffusion recess 31 restricts the injection range so that the injection range does not become too wide when the injection is performed. The distance (a + a) between the inner wall surfaces 33 and 33 in the diffusion recess 31, the extension length H (h + 2a), the depth The injection range can be changed by designing and adjusting the length b.

  Therefore, according to the aerosol button 100 having the above-described configuration, the second outflow passage 17 that is orthogonal to the first outflow passage 11 is formed, and the diffusion recess 31 is formed in the protruding front end surface 21 that the second outflow passage 17 opens. The mold can be released in the outflow direction M of the second outflow passage 17, so that the wide injection hole conventionally provided as a separate part becomes unnecessary, and the injection hole 1 can be molded as one part integrated with the button body 3. As a result, the number of parts and assembly man-hours can be reduced. Further, by adjusting the design of only the diffusion recess 31 that changes the interval (a + a), the extension length H (h + 2a), the depth b of the parallel inner wall surfaces 33, 33, the internal outflow path (second outflow path 17) The injection range can be easily changed without changing the value.

Next, the aerosol button cap according to the present invention will be described.
5 is a plan view of the aerosol button cap, FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5, and FIG. 7 is an enlarged view of a main part of the aerosol button shown in FIG. Note that members equivalent to those shown in FIGS. 1 to 4 are denoted by the same reference numerals, and redundant description is omitted.
The aerosol button cap 200 is formed by integrally forming an aerosol button 100A and a cap body 41. The aerosol button 100A has the same main part as the aerosol button 100 described above. That is, the nozzle hole 1 is formed on the outlet side of the second outflow passage 17 shown in FIG. However, the circular recess 29 is not formed, and the column body 19 protrudes directly from the side surface 23. Further, the second outflow path 17 is connected to the first outflow path 11 at a position lower than the blocking portion 13. The other main components of the aerosol button 100A are the same as those of the aerosol button 100.

  The cap main body 41 is disposed at the center of the crown portion 45 that is open at the upper center serving as the accommodation space 43 shown in FIG. The lower surface of the crown 45 is an opening 47 shown in FIG. 6, and the opening 47 is put on (attached to) the top of the aerosol container 507 (see FIG. 8) like a lid. A plurality of locking projections 49 that are elastically locked to the upper peripheral edge of the aerosol container 507 are provided on the inner periphery of the opening 47. The crown portion 45 is provided with a pair of side wall portions 51, 51 opposite to each other with the housing space 43 interposed therebetween, so that the side wall portions 51, 51 can press the aerosol button 100 A from the upper separated space. Yes.

  One end of the thin hinge 53 is connected to the inner edge of the crown 45 that opens the accommodation space 43, and the other end of the thin hinge 53 is connected to the front side surface 23 of the button body 3A. That is, the aerosol button 100 </ b> A and the cap body 41 are integrally formed via the thin hinge 53. This enables simultaneous molding with the same mold. The thin hinge 53 includes a flat plate portion 53a, a stepped portion 53b, and a slanted wall portion 53c that are continuously provided from the side of the crown portion 45, thereby facilitating elastic deformation and durability, and pressing the aerosol button 100A. Is acceptable.

  According to the aerosol button cap 200, the cap body 41 is formed integrally with the aerosol button 100A in which the nozzle body and the push button are integrated, so that the wide-angle sprayable nozzle body, push button, and cap body which are separate members are formed. These three parts become one part. Thereby, three parts can be made into one part and the number of parts can further be reduced.

3 ... button body 5 ... lower surface (first surface)
7 ... Stem insertion hole 11 ... First outflow passage 15 ... Step portion (end of insertion hole)
17 ... 2nd outflow channel 19 ... Column 21 ... Projection front end surface (2nd surface)
DESCRIPTION OF SYMBOLS 31 ... Diffusion recessed part 33 ... Parallel inner wall surface 35 ... Curved surface 41 ... Cap main body 100 ... Aerosol button 200 ... Aerosol button cap D ... Diameter of 2nd outflow path G ... 2nd outflow path axis h ... 2nd outflow path of Distance larger than the diameter H ... Extension length a ... Equal distance smaller than the radius of the second outflow path r ... Radius of the second outflow path

Claims (3)

A stem insertion hole opening in the first surface of the button body;
A first outflow passage extending by connecting a base end to a terminal end of the stem insertion hole and having a tip closed;
A second outflow path comprising a straight hole having a same inner diameter, having a proximal end connected orthogonally to the first outflow path, a distal end opened at the second surface,
A parallel inner wall surface sandwiching the axis of the second outflow passage at an equal distance smaller than the radius of the second outflow passage and extending in a direction orthogonal to the axis at a distance larger than the diameter of the second outflow passage. A diffusion recess opening in the second surface,
Furthermore, a pair of inner surfaces that connect parallel inner wall surfaces of the diffusion recesses are formed as curved surfaces that open inwardly,
Thus, the aerosol button is characterized in that the diffusion recess has a shape in which a central portion of the inner wall surface of the long cylindrical space is cut out by a circular arc on both sides of the second outflow path . The aerosol button according to claim 1,
The aerosol button according to claim 2, wherein the second surface is a projecting front end surface of a columnar body projecting coaxially with the axis from the button body. An aerosol button cap, wherein the aerosol button according to claim 1 or 2 and a cap body are integrally formed.

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