Discharge tool for aerosol container
The aerosol container discharge device addresses the limitation of constant foam quality by incorporating a movable nozzle head with a guide cylinder and protrusions, allowing for adjustable foam quality and expanded application possibilities.
Patent Information
- Application Number
- JP2023166459
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-27
- Publication Date
- 2025-04-09
Smart Images

Figure 2025056924000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to an aerosol container discharge tool having a nozzle head that is attached to the stem of an aerosol container. [Background technology]
[0002] Conventionally, there is known an aerosol container that contains a pressurized gas together with the contents, and that expels the contents from the stem in the form of foam to the outside by pushing down or tilting the stem. In order to facilitate the operation of expelling the contents, such an aerosol container is generally used with an expelling tool attached.
[0003] Known aerosol container discharge tools, also known as aerosol spouts, include a nozzle head that is attached to the stem of the aerosol container (see, for example, Patent Document 1). In this case, the nozzle head is configured to include a connection part connected to the stem, a nozzle part that serves as a discharge port, and a flow path that connects the connection part and the nozzle part, and when the nozzle head is depressed and the stem is depressed or tilted together with the nozzle head, the contents discharged from the stem are sent to the nozzle part via the flow path and are discharged from the nozzle part to the outside. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] JP 2007-204091 A Summary of the Invention [Problem to be solved by the invention]
[0005] However, with the above-mentioned conventional aerosol container ejection devices, the foam quality of the ejected contents is always constant, and it is not possible to change the foam quality of the ejected contents during use, such as making them a watery foam or a firm foam, and there is room for improvement in this regard.
[0006] The present invention aims to solve such problems, and its object is to provide an aerosol container ejection device that is capable of changing the foam quality of the contents ejected during use. [Means for solving the problem]
[0007] The aerosol container discharge tool of the present invention is an aerosol container discharge tool equipped with a nozzle head to be attached to the stem of an aerosol container, characterized in that the nozzle head comprises a lower head having a connection portion connected to the stem and a lower cylindrical portion connected to the connection portion, an upper head having an upper cylindrical portion that fits into the lower cylindrical portion to form a flow path together with the lower cylindrical portion and is movable in the axial direction relative to the lower cylindrical portion, and a nozzle portion that is integrally connected to the upper cylindrical portion, a guide cylinder provided on either the lower head or the upper head and equipped with a guide path having a helical portion extending helically around the axis, a first horizontal portion connected to one end of the helical portion and extending in the circumferential direction around the axis, and a second horizontal portion connected to the other end of the helical portion and extending in the circumferential direction around the axis, and a protrusion provided on the other of the lower head or the upper head and engaging with the guide path and movable along the guide path.
[0008] In the aerosol container discharge device of the present invention, in the above-mentioned configuration, it is preferable that the guide cylinder is integrally formed with the lower head via a connecting portion, the upper head is integrally provided with an outer cylinder body covering the outside of the upper cylinder portion, and the protrusion portion is integrally formed on the outer peripheral surface of the outer cylinder body.
[0009] In the above-mentioned configuration, the aerosol container discharge device of the present invention preferably has a cover body fixed to the aerosol container, a convex portion provided on either the guide cylinder or the cover body, and a vertical groove provided on the other of the guide cylinder or the cover body extending parallel to the axis and with which the convex portion engages, and is configured so that the engagement between the convex portion and the vertical groove prevents the lower head from rotating relative to the cover body and from coming off.
[0010] In the aerosol container discharge tool of the present invention, in the above-mentioned configuration, it is preferable that the guide path has a climbing protrusion between the spiral portion and the first horizontal portion and between the spiral portion and the second horizontal portion.
[0011] In the aerosol container discharge tool of the present invention, in the above-mentioned configuration, it is preferable that the guide path has a third horizontal portion between the first horizontal portion and the second horizontal portion, extending in a circumferential direction centered on the axis. Effect of the Invention
[0012] According to the present invention, it is possible to provide a discharge tool for an aerosol container that is capable of changing the foam quality of the contents discharged during use. [Brief description of the drawings]
[0013] [Figure 1] 1 is a cross-sectional side view showing an aerosol container discharge tool according to one embodiment of the present invention attached to an aerosol container. [Diagram 2] 2 is a side view of the guide cylinder shown in FIG. 1. [Diagram 3] FIG. 3 is a development view showing the shape of the guideway shown in FIG. 2. [Figure 4] 2 is a cross-sectional side view of the aerosol container discharge tool shown in FIG. 1 with the nozzle head in a full application mode. FIG. [Diagram 5] 2 is a cross-sectional side view of the aerosol container discharge tool shown in FIG. 1 with a nozzle head in a partial application mode. FIG. [Figure 6] FIG. 11 is a development view showing the shape of a guideway according to a modified example. [Figure 7] FIG. 13 is a development view showing the shape of a guideway according to another modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] Hereinafter, an aerosol container discharge tool 1 according to one embodiment of the present invention will be described in more detail with reference to the drawings.
[0015] In this specification, claims and abstract, "upper" means upper (upper in Figure 1) when the aerosol container discharge device 1 is in the upright position as shown in Figure 1, and "lower" means the opposite side to "upper" (lower in Figure 1).
[0016] As shown in Fig. 1, an aerosol container discharge tool 1 according to one embodiment of the present invention is used by being attached to an aerosol container 2. By attaching the aerosol container discharge tool 1 to the aerosol container 2, an aerosol container 3 with a discharge tool is formed.
[0017] The aerosol container 2 has a container body 2a made of, for example, metal or synthetic resin, and a stem 2b protruding upward from the upper end of the container body 2a. The container body 2a contains contents and pressurized gas. The stem 2b can be pushed into the container body 2a, and when the stem 2b is pushed down toward the container body 2a, the contents are discharged from the upper end of the stem 2b.
[0018] The contents contained in the container body 2a are, for example, cosmetics, facial cleanser, etc., and are discharged in the form of foam from the stem 2b.
[0019] The aerosol container discharge tool 1 according to this embodiment has a nozzle head 10.
[0020] The nozzle head 10 is attached to the stem 2b, and ejects the contents when pressed down together with the stem 2b.
[0021] In the aerosol container discharge tool 1 according to this embodiment, the nozzle head 10 has a lower head 11, an upper head 12, a guide cylinder 13 and a protrusion 14.
[0022] The lower head 11 constitutes the lower portion of the nozzle head 10, and includes a connection portion 11a and a lower cylindrical portion 11b.
[0023] The connecting part 11a is a part connected to the stem 2b, and is formed in a cylindrical shape coaxial with the axis O of the stem 2b. A partition wall 11c is integrally provided at the upper end of the connecting part 11a, and a through hole 11d is provided at the axis of the partition wall 11c. In this embodiment, when the aerosol container 3 with a discharge tool is distributed, the stem 2b is not connected to the connecting part 11a, and when the nozzle head 10 is pressed down during use, the stem 2b fits inside the connecting part 11a and is connected to the connecting part 11a.
[0024] The lower cylinder portion 11b is cylindrical and coaxial with the connecting portion 11a and has the same diameter as the connecting portion 11a, and is integrally connected to the upper end of the connecting portion 11a. The internal space of the lower cylinder portion 11b communicates with the internal space of the connecting portion 11a or the stem 2b via a through hole 11d. A seal portion 11e that expands slightly radially outward is integrally provided at the upper end of the lower cylinder portion 11b. The lower cylinder portion 11b may be configured not to have a seal portion 11e at the upper end.
[0025] The upper head 12 constitutes the upper portion of the nozzle head 10, and includes an upper cylindrical portion 12a and a nozzle portion 12b.
[0026] The upper cylinder portion 12a is cylindrical and coaxial with the lower cylinder portion 11b, and has a larger diameter than the lower cylinder portion 11b. The upper cylinder portion 12a fits into the seal portion 11e of the lower cylinder portion 11b to define a flow path 15 inside the nozzle head 10 together with the lower cylinder portion 11b. The seal portion 11e is in liquid-tight contact with the inner circumferential surface of the upper cylinder portion 12a over the entire circumference. The seal portion 11e slides on the inner circumferential surface, allowing the upper cylinder portion 12a to move freely in the direction of the axis O (the up and down direction in FIG. 1) relative to the lower cylinder portion 11b.
[0027] The nozzle portion 12b is integrally connected to the upper cylinder portion 12a. In this embodiment, the nozzle portion 12b is integrally connected to the upper end of the upper cylinder portion 12a and protrudes from the upper cylinder portion 12a in a direction perpendicular to the axis O, i.e., toward the side of the upper cylinder portion 12a. The tip of the nozzle portion 12b is an outlet 12c that communicates with the flow path 15, and the contents that are discharged from the stem 2b and reach the nozzle portion 12b through the flow path 15 are discharged from the outlet 12c to the outside in the form of bubbles.
[0028] In this embodiment, the upper head 12 is configured to integrally include an outer cylinder body 12d that covers the outside of the upper cylinder portion 12a. The outer cylinder body 12d is cylindrical and coaxial with the upper cylinder portion 12a, has a larger diameter than the upper cylinder portion 12a, and is integrally connected to the outside of the upper cylinder portion 12a via a top wall 12e of the upper head 12, covering the upper cylinder portion 12a from the outside.
[0029] The guide cylinder 13 is provided on either the lower head 11 or the upper head 12. In this embodiment, the guide cylinder 13 is provided integrally with the lower head 11 via a connecting portion 16. The guide cylinder 13 has a cylindrical shape centered on the axis O, and is disposed coaxially outside the lower cylinder portion 11b.
[0030] The guide cylinder 13 includes a guide passage 17. As shown in Figs. 2 and 3, the guide passage 17 includes a spiral portion 17a extending spirally around the axis O, a first horizontal portion 17b connected to one end of the spiral portion 17a and extending in the circumferential direction (horizontal direction in Fig. 1) around the axis O, and a second horizontal portion 17c connected to the other end of the spiral portion 17a and extending in the circumferential direction (horizontal direction in Fig. 1) around the axis O. In this embodiment, the spiral portion 17a is inclined so as to gradually move upward as it rotates counterclockwise around the axis O in a plan view, and the first horizontal portion 17b is connected to the upper end of the spiral portion 17a and the second horizontal portion 17c is connected to the lower end of the spiral portion 17a.
[0031] In this embodiment, the guide cylinder 13 has a pair of guide paths 17 arranged point symmetrically about the axis O. Note that the guide cylinder 13 is required to have at least one guide path 17, and the number of guide paths 17 can be changed as appropriate.
[0032] In addition, in this embodiment, the guide passage 17 is formed in the shape of a slit or a long hole that penetrates the guide cylinder 13 in the radial direction, but it may also be formed in the shape of a groove on the inner surface of the guide cylinder 13.
[0033] The protrusion 14 is provided on the other of the lower head 11 and the upper head 12. As shown in FIG. 1, in this embodiment, the protrusion 14 is integrally provided on the outer peripheral surface of the outer cylinder body 12d of the upper head 12. As shown in FIG. 1 and FIG. 3, the protrusion 14 engages with the guide path 17 and is movable along the guide path 17. More specifically, the protrusion 14 is a cylindrical shape (circular boss shape) with an outer diameter corresponding to the path width of the guide path 17, and is disposed inside the guide path 17 to engage with the guide path 17 and is movable along the guide path 17. The first horizontal portion 17b and the second horizontal portion 17c of the guide path 17 each have a size capable of accommodating the protrusion 14.
[0034] In this embodiment, since a pair of guide paths 17 is provided in guide cylinder 13, a pair of protrusions 14 corresponding to each of guide paths 17 is also provided in outer cylinder 12d.
[0035] It is also possible to provide the protrusion 14 on the outer circumferential surface of the upper cylindrical portion 12a without providing the outer cylindrical body 12d on the upper head 12.
[0036] The aerosol container discharge tool 1 according to this embodiment can be configured to have a cover body 20 fixed to the aerosol container 2. The cover body 20, which is made of, for example, synthetic resin, integrally has a fixing tube part 21 fixed to the container body 2a of the aerosol container 2, a shoulder cover 22 integrally connected to the outside of the fixing tube part 21, a top wall part 23 connected to the upper end of the fixing tube part 21, and a cylindrical inner tube part 24 extending downward from the top wall part 23.
[0037] The inner cylinder portion 24 is disposed coaxially outside the guide cylinder 13. That is, the cover body 20 covers the outside of the lower head 11 of the nozzle head 10.
[0038] A convex portion 40 is provided on either the guide cylinder 13 or the cover body 20. In this embodiment, a plurality of convex portions 40 are provided on the inner peripheral surface of the inner cylindrical portion 24 of the cover body 20 at intervals in the circumferential direction centered on the axis O. On the other hand, a vertical groove 41 is provided on the other of the guide cylinder 13 and the cover body 20. In this embodiment, a plurality of vertical grooves 41 corresponding to the plurality of convex portions 40 are provided on the outer peripheral surface of the guide cylinder 13. These vertical grooves 41 each extend parallel to the axis O, that is, in the vertical direction, for a predetermined length. The plurality of convex portions 40 are engaged with the corresponding vertical grooves 41, and are movable along the vertical grooves 41. Since the groove width of the vertical groove 41 is approximately the same as the outer diameter of the convex portion 40, the lower head 11 is prevented from rotating relative to the cover body 20 by the engagement between the convex portion 40 and the vertical groove 41. Furthermore, since the convex portion 40 can move along the vertical groove 41 within the range in which the vertical groove 41 is provided, the lower head 11 is prevented from coming off from the cover body 20. The guide cylinder 13 may be provided with a slit 42 extending upward from its lower end, so that when the multiple convex portions 40 are engaged with the multiple vertical grooves 41, the slit 42 narrows, allowing the guide cylinder 13 to easily deform radially inward. In this case, it is preferable to provide a pair of slits 42 on either side of the axis O, but the number of slits can be changed in various ways.
[0039] The aerosol container discharge tool 1 according to this embodiment may be configured so that an overcap 30 that covers the nozzle head 10 is detachably attached to the cover body 20.
[0040] In the aerosol container discharge tool 1 having the above-mentioned configuration, when the overcap 30 is removed from the cover body 20 from the flow state shown in Fig. 1 and the nozzle head 10 is pressed down, the connecting part 11a fits into the stem 2b and the upper end of the stem 2b abuts against the partition wall 11c. Then, by pressing down the nozzle head 10 in this state, the stem 2b is pressed down together with the nozzle head 10, and the contents can be discharged in a foam form from the discharge port 12c of the nozzle part 12b.
[0041] Here, in the aerosol container discharge tool 1 according to this embodiment, as shown in Fig. 4, when the protrusion 14 provided on the upper head 12 is engaged with the first horizontal portion 17b of the guide path 17 provided on the lower head 11, the nozzle head 10 is in the full application form. In the nozzle head 10 in the full application form, the length (flow path length) of the flow path 15 between the stem 2b or the connection portion 11a and the nozzle portion 12b is at its maximum.
[0042] When the nozzle head 10 is in the full application form and the top wall 12e of the upper head 12 is pressed downward to press down the nozzle head 10, the downward force applied to the upper head 12 is transmitted to the lower head 11 via the protrusion 14 in the first horizontal portion 17b, so that the entire nozzle head 10 is pressed downward together with the stem 2b, and the contents are ejected from the stem 2b in the form of a foam.
[0043] When the nozzle head 10 is in the whole body application mode, the length of the flow path 15 inside the nozzle head 10 becomes long, so that the contents discharged in foam form from the stem 2b are crushed as they pass through the flow path 15, and are discharged as a watery foam from the discharge port 12c of the nozzle part 12b. The contents discharged as such a watery foam is suitable for application to a wide surface such as the entire face or body.
[0044] On the other hand, when the upper head 12 is rotated clockwise around the axis O relative to the lower head 11 from the state shown in FIG. 4, the protrusion 14 moves from the first horizontal portion 17b through the spiral portion 17a to the second horizontal portion 17c. In this manner, the protrusion 14 moves from above to below along the spiral portion 17a, so that the upper head 12 moves downward relative to the lower head 11. Then, as shown in FIG. 5, when the protrusion 14 provided on the upper head 12 is engaged with the second horizontal portion 17c of the guide path 17 provided on the lower head 11, the nozzle head 10 is in the partial application form. In the nozzle head 10 in the partial application form, the length of the flow path 15 between the stem 2b or the connection portion 11a and the nozzle portion 12b is a minimum length that is shorter than the length of the flow path 15 in the entire application form.
[0045] When the nozzle head 10 is in the partial application form and the top wall 12e of the upper head 12 is pressed downward to press down the nozzle head 10, the downward force applied to the upper head 12 is transmitted to the lower head 11 via the protrusion 14 in the second horizontal portion 17c, so that the entire nozzle head 10 is pressed downward together with the stem 2b, and the contents are ejected from the stem 2b in a foam-like form.
[0046] When the nozzle head 10 is in the partial application form, the length of the flow path 15 inside the nozzle head 10 is shorter than when it is in the full application form, so that the contents discharged in a foam form from the stem 2b are less crushed as they pass through the flow path 15, and the contents are discharged in a more solid foam state from the discharge port 12c of the nozzle part 12b. The contents discharged as such a solid foam are less likely to drip, and are therefore suitable for applying the contents in a pile to a portion of the object to be applied.
[0047] In this way, in the aerosol container discharge tool 1 according to this embodiment, the length of the flow path 15 defined by the upper cylinder portion 12a and the lower cylinder portion 11b can be increased or decreased by a simple operation of rotating the upper head 12 relative to the lower head 11, and the discharged contents can be selectively discharged into a watery foam quality suitable for whole application, or a firm foam quality suitable for partial application. Therefore, according to the aerosol container discharge tool 1 according to this embodiment, the foam quality of the contents discharged during use can be changed by a simple operation of rotating the upper head 12 relative to the lower head 11.
[0048] Furthermore, in the aerosol container discharge device 1 of this embodiment, the guide cylinder 13 is configured to be integrally provided to the lower head 11 via a connecting portion 16, the upper head 12 is configured to be integrally provided with an outer cylinder 12d that covers the outside of the upper cylinder portion 12a, and the protrusion portion 14 is configured to be integrally provided on the outer peripheral surface of the outer cylinder 12d.As a result, as described above, the aerosol container discharge device 1 is configured to be able to change the foam quality of the contents discharged when in use, while simplifying the appearance of the upper head 12 and improving the aesthetic appearance of the aerosol container discharge device 1.
[0049] In particular, when the lower head 11 is covered by the cover body 20 as described above, the aesthetic appearance of the aerosol container discharge tool 1 can be further improved.
[0050] Furthermore, the aerosol container discharge tool 1 of this embodiment has a cover body 20 fixed to the aerosol container 2, a convex portion 40 provided on either the guide cylinder 13 or the cover body 20, and a vertical groove 41 provided on the other of the guide cylinder 13 or the cover body 20 extending parallel to the axis O and engaging with the convex portion 40. By engaging the convex portion 40 with the vertical groove 41, the lower head 11 is prevented from rotating relative to the cover body 20 and from coming off. Therefore, when the upper head 12 is rotated relative to the lower head 11, it is not necessary to hold the lower head 11, and the foam quality of the aerosol container discharge tool 1 can be easily changed.
[0051] 6 as a modified example, the guide path 17 may have a configuration in which a climbing-over protrusion 17d is provided between the spiral portion 17a and the first horizontal portion 17b and between the spiral portion 17a and the second horizontal portion 17c. The climbing-over protrusion 17d is set to a height that allows the protrusion 14 moving between the first horizontal portion 17b and the spiral portion 17a or between the second horizontal portion 17c and the spiral portion 17a to climb over it.
[0052] By configuring the guide path 17 to have the above-mentioned overcoming protrusion 17d, it is possible to prevent the protrusion 14 from unexpectedly moving from the first horizontal portion 17b or the second horizontal portion 17c to the spiral portion 17a when the upper head 12 is pressed down. This improves the operability of the aerosol container discharge tool 1 when discharging the contents.
[0053] 7 as a modified example, the guide path 17 may have a third horizontal portion 17e between the first horizontal portion 17b and the second horizontal portion 17c, the third horizontal portion 17e extending in the circumferential direction centered on the axis O. In this case, a spiral portion 17a is provided between the first horizontal portion 17b and the third horizontal portion 17e, and a spiral portion 17a is also provided between the second horizontal portion 17c and the third horizontal portion 17e.
[0054] With this configuration, the nozzle head 10 can be put into an intermediate application mode between the full application mode and the partial application mode, and can eject three types of foam quality.
[0055] The guide path 17 may be configured to have one or more horizontal sections in addition to the third horizontal section 17e between the first horizontal section 17b and the second horizontal section 17c, thereby enabling the ejection of a wider variety of foam qualities.
[0056] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention.
[0057] For example, in the above embodiment, the guide cylinder 13 is provided on the lower head 11 and the protrusion 14 is provided on the upper head 12, but the guide cylinder 13 may be provided on the upper head 12 and the protrusion 14 may be provided on the lower head 11.
[0058] In addition, in the above embodiment, the upper cylindrical portion 12a of the upper head 12 is fitted to the outside of the lower cylindrical portion 11b of the lower head 11, but the upper cylindrical portion 12a of the upper head 12 may be fitted to the inside of the lower cylindrical portion 11b of the lower head 11.
[0059] Furthermore, in the above embodiment, the aerosol container discharge tool 1 is configured to have the cover body 20 and the overcap 30, but it may be configured without these.
[0060] Furthermore, in the above embodiment, the aerosol container 2 is one in which the content is discharged by pushing down the stem 2b, but the aerosol container 2 may be one in which the content is discharged by tilting the stem 2b. In this case, the nozzle head 10 may be configured to tilt the stem 2b that is pushed down. [Explanation of symbols]
[0061] 1. Aerosol container dispenser 2. Aerosol containers 2a Container body 2b stem 3. Aerosol container with dispenser 10 Nozzle Head 11 Lower Head 11a Connection 11b Lower cylinder part 11c Bulkhead 11d through hole 11e Seal part 12 Upper Head 12a Upper cylinder part 12b Nozzle part 12c outlet 12d outer cylinder 12e ceiling wall 13 Guide cylinder 14 Protrusion 15 Flow Path 16 Connecting part 17 Guideway 17a Spiral part 17b 1st horizontal section 17c 2nd horizontal section 17d. Overhanging protrusion 17e 3rd horizontal section 20 Cover body 21 Fixing cylinder part 22 Shoulder cover 23 Ceiling wall 24 Inner cylinder part 30 Overcap 40 Convex 41 Vertical groove 42 Slit O axis
Claims
1. An aerosol container discharge tool having a nozzle head attached to a stem of the aerosol container, The nozzle head is a lower head including a connecting portion connected to the stem and a lower tubular portion connected to the connecting portion; an upper head including an upper cylindrical portion that is fitted to the lower cylindrical portion to define a flow path together with the lower cylindrical portion and that is movable in an axial direction relative to the lower cylindrical portion, and a nozzle portion that is integrally connected to the upper cylindrical portion; a guide cylinder provided on either the lower head or the upper head and including a guide path having a helical portion extending helically about the axis, a first horizontal portion connected to one end of the helical portion and extending in a circumferential direction about the axis, and a second horizontal portion connected to the other end of the helical portion and extending in a circumferential direction about the axis; a projection provided on the other of said lower head or said upper head, said projection engaging with said guide path and movable along said guide path.
2. The guide cylinder is integrally provided on the lower head via a connecting portion, the upper head is integrally provided with an outer cylinder body that covers the outside of the upper cylinder portion, 2. The aerosol container discharge tool according to claim 1, wherein the protrusion is provided integrally with the outer peripheral surface of the external cylinder.
3. A cover body fixed to the aerosol container; a protrusion provided on either the guide cylinder or the cover body; a longitudinal groove provided on the other of the guide cylinder and the cover body, the longitudinal groove extending parallel to the axis and engaging with the protrusion, 3. The aerosol container discharge tool according to claim 2, wherein the lower head is prevented from rotating relative to the cover body and from coming off due to engagement between the convex portion and the vertical groove.
4. The aerosol container discharge tool according to any one of claims 1 to 3, wherein the guide path has a climbing protrusion between the spiral portion and the first horizontal portion and between the spiral portion and the second horizontal portion.
5. The aerosol container discharge tool according to any one of claims 1 to 3, wherein the guide path has a third horizontal portion between the first horizontal portion and the second horizontal portion, the third horizontal portion extending in a circumferential direction centered on the axis.
Citation Information
Patent Citations
Over-cap for aerosol container
JP2007204091A