Aerosol container ejector

Abstract

To provide a novel aerosol container ejector allowed to easily remove a shoulder cover from an aerosol container.SOLUTION: An aerosol container ejector 100 according to the present disclosure comprises a shoulder cover 30 attached on an annular edge 13 of a mounting cup 12 and a nozzle 20. The shoulder cover 30 has an inner cover 40 attached on the annular edge 13 and an outer cover 50 covering over the inner cover 40, and the inner cover 40 has an inner wall 41 positioned radially inward of the annular edge 13 and having an inner thread portion 41a and an outer wall 43 positioned radially outward of the annular edge 13, in which the outer wall 43 is provided with an engagement piece 43a to swing radially. The outer cover 50 has an inner peripheral wall 51 having an outer thread portion 51a in mesh with the inner thread portion 41a and an outer peripheral wall 53 surrounding the outer wall 43 from outside. If the outer cover 50 displaces down relatively to the inner cover 30, the outer peripheral wall 53 presses at its lower part a lower part of the engagement piece 43a so that the engagement piece 43a engages with the annular edge 13.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a discharge tool for an aerosol container. [Background technology]

[0002] In aerosol containers that use a pressurized medium to spray the contents, it is common for a metal mounting cup to be attached to the upper opening of the bottomed, cylindrical container body so that it can withstand high internal pressure. A nozzle that sprays the contents when pressed down is attached to the stem of the container, and a synthetic resin shoulder cover, which is provided for the purpose of providing a decorative effect, etc., is engaged and held on the edge of the mounting cup (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-108814 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the shoulder cover of the container described in Patent Document 1, although the outer cover can be relatively easily detached from the inner cover by rotating it around the central axis, there are cases where the engagement between the inner cover and the mounting cup cannot be easily released when removing the inner cover from the mounting cup. For this reason, there are cases where the aerosol container after the contents have been used up cannot be efficiently disposed of, or the nozzle or shoulder cover cannot be efficiently attached to a new aerosol container for reuse, so there is still room for improvement in these respects.

[0005] The present disclosure is intended to solve these problems, and has as its objective the provision of a new aerosol container discharge device that allows the shoulder cover to be easily removed from the aerosol container. [Means for solving the problem]

[0006] In order to solve the above problems, the aerosol container discharge tool of the present disclosure comprises: [1] An aerosol container discharge tool that can be attached to an aerosol container that discharges contents by pressing a stem, a shoulder cover attached to an annular edge formed on a mounting cup of the aerosol container; a nozzle disposed radially inside the shoulder cover and configured to eject the contents of the aerosol container; Equipped with The shoulder cover has an inner cover attached to the annular edge and an outer cover covering the inner cover, The inner cover is an inner wall located radially inside the annular edge portion and having an internal thread portion on an inner circumferential surface thereof; an outer wall located radially outward of the annular edge; The outer wall is provided with a locking piece that rotates around a rotation axis extending in a horizontal direction to swing above and below the rotation axis in a radial direction, The outer cover is an inner peripheral wall located radially inside the inner wall and having an outer peripheral surface having an outer thread portion that engages with the inner thread portion; an outer circumferential wall that is connected to the inner circumferential wall via a top wall and surrounds the outer wall from the radially outer side; The present invention is characterized in that, as a result of the outer cover being displaced downward relative to the inner cover due to the threaded engagement between the inner threaded portion and the outer threaded portion, the lower part of the outer peripheral wall presses against the lower part of the locking piece, and the lower part of the locking piece engages with the annular edge portion.

[0007] In addition, the aerosol container discharge tool of the present disclosure is [2] In the configuration described in [1] above, it is preferable that below the rotation axis of the locking piece, there is provided a first pressing portion that protrudes radially outward and is capable of abutting against the lower part of the outer peripheral wall, and an engaging protrusion that protrudes radially inward and engages with the annular edge portion.

[0008] In addition, the aerosol container discharge tool of the present disclosure is [3] In the configuration described in [1] or [2] above, it is preferable that an engagement rib protruding radially inward is provided on the inner surface of the outer wall, and a second pressing portion protruding radially outward and capable of abutting against the engagement rib is provided above the rotation axis of the engagement piece.

[0009] In addition, the aerosol container discharge tool of the present disclosure is [4] In the configuration described in [3] above, it is preferable that a retaining protrusion protruding radially outward is provided above the locking piece on the inner cover, and that the retaining protrusion engages with the locking rib to prevent the inner cover from slipping downward relative to the outer cover.

[0010] In addition, the aerosol container discharge tool of the present disclosure is [5] In the configuration described in any one of [1] to [4] above, it is preferable that a regulating cover is attached to at least the outer surface of the outer peripheral wall of the outer cover, which regulates radially outward displacement of the outer peripheral wall.

[0011] In addition, the aerosol container discharge tool of the present disclosure is [6] In any of the configurations described in [1] to [5] above, it is preferable that the locking piece is integrally formed with other portions of the outer wall at a height position of the rotation axis via narrow width portions provided on both circumferential sides of the locking piece and having a narrower width in at least the vertical direction. Effect of the Invention

[0012] According to the present disclosure, it is possible to provide a new aerosol container discharge tool that enables a shoulder cover to be easily removed from an aerosol container. [Brief description of the drawings]

[0013] [Figure 1]1 is a front cross-sectional view showing an aerosol container discharge tool according to an embodiment of the present disclosure attached to an aerosol container during use. FIG. [Diagram 2] FIG. 2 is an enlarged cross-sectional view of a shoulder cover portion in FIG. [Diagram 3] 13 is a view of a locking piece that constitutes an outer wall of the inner cover, as viewed from the radial outside. FIG. [Figure 4] 1 is an enlarged cross-sectional view showing a process of removing an aerosol container discharge tool according to an embodiment of the present disclosure from an aerosol container (disengagement between an inner cover and a mounting cup). FIG. [Diagram 5] 1 is an enlarged cross-sectional view showing a process of removing an aerosol container discharge tool according to one embodiment of the present disclosure from an aerosol container (separating an outer cover and an inner cover from the aerosol container). FIG. [Figure 6] 1 is a front cross-sectional view showing a process of removing an aerosol container discharge tool according to an embodiment of the present disclosure from an aerosol container (start of separating the outer cover and inner cover from the aerosol container). FIG. [Figure 7] 1 is an enlarged cross-sectional view showing a process of attaching an aerosol container discharge tool according to an embodiment of the present disclosure to an aerosol container. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, one embodiment of the present disclosure will be described more specifically with reference to the drawings.

[0015] FIG. 1 shows an embodiment of an aerosol container dispensing tool 100 according to the present disclosure in a state during use in which the contents of an aerosol container 10 can be ejected.

[0016] In this specification, claims, and drawings, the up-down direction means the upper and lower directions when the aerosol container discharge tool 100 is attached to the aerosol container 10 and in an upright position as shown in Fig. 1. The radially outward direction means the direction away from the central axis O along a straight line passing through the central axis O of the aerosol container discharge tool 100 in Fig. 1 and perpendicular to the central axis O, and the radially inward direction means the direction toward the central axis O along the straight line.

[0017] The accompanying drawings of the present disclosure are drawn to the same scale in the vertical and horizontal directions, and the aspect ratio of the aerosol container discharge tool 100 in the drawings represents the aspect ratio of the aerosol container discharge tool 100 of one embodiment of the present disclosure. However, the configuration, shape, dimensional ratio, etc. of the aerosol container discharge tool 100 in the accompanying drawings are merely one embodiment of the present disclosure. The present disclosure should be interpreted based on the wording of the claims, and is not limited to the configuration, shape, dimensional ratio, etc. shown in the drawings.

[0018] 1, reference numeral 10 denotes an aerosol container, reference numeral 20 denotes a nozzle, and reference numeral 30 denotes a shoulder cover. The shoulder cover 30 has an inner cover 40 and an outer cover 50. Reference numeral 60 denotes an overcap.

[0019] As shown in detail in Figure 1, the aerosol container 10 is formed by fastening the outer edge of a mounting cup 12, also made of metal, to the upper end of a cylindrical, bottomed metal container body 11 (the fastened portion forms an annular edge portion 13), and a sealed space M formed inside the body contains, for example, cosmetics or compressed gas.

[0020] The mounting cup 12 has an inner diameter sidewall 14 that hangs down from the radially inner side of the annular edge portion 13, and is provided with a flanged cylindrical portion 15 on the radially inner side of the inner diameter sidewall 14, which is integrally connected to the lower edge of the inner diameter sidewall 14. The cylindrical portion 15 is also provided with a stem 16 that ejects the contents in the sealed space M when pressed down.

[0021] The nozzle 20 is made of synthetic resin and includes a vertical tube portion 21 that is continuous with the stem 16, and a horizontal tube portion 22 that extends obliquely upward from the upper end of the vertical tube portion 21 and has a discharge hole 22a for discharging the contents. Also, an outer tube portion 23 that is integrally connected to the vertical tube portion 21 and the horizontal tube portion 22 is provided on the radially outer side of the vertical tube portion 21. Furthermore, a claw portion 24 that projects radially outward is provided at the lower end of the outer tube portion 23, and reinforcing ribs 25 are provided between the vertical tube portion 21 and the outer tube portion 23 at intervals in the circumferential direction.

[0022] Next, the inner cover 40, which is a component of the shoulder cover 30, will be described. The inner cover 40 is made of synthetic resin and is attached to the annular edge portion 13 from above. It has an annular inner wall 41 located radially inside the annular edge portion 13 and an outer wall 43 located radially outside the annular edge portion 13 and connected to the inner wall 41 via an upper wall 42 connected to the upper end of the inner wall 41. In this embodiment, the upper wall 42 has a step 44 at a connection portion with the outer wall 43. Furthermore, an intermediate wall 45 is provided at a radial position between the inner wall 41 and the outer wall 43, and hangs down from the upper wall 42. The intermediate wall 45 is connected to the upper wall 42.

[0023] As shown in Figs. 1 and 2, the inner wall 41 has an internal thread portion 41a on its inner circumferential surface (diametrically inner surface) above the center height.

[0024] As shown in Figs. 1 and 2, the outer wall 43 hangs down from a step 44 provided on the radially outer side of the upper wall 42, and the outer wall 43 is provided with a locking piece 43a that rotates around a rotation axis C extending horizontally as shown in Figs. 1 to 3. As shown in Fig. 3, the locking piece 43a is separated from other parts of the outer wall 43 by a notch 43g, and is provided on both sides of the locking piece 43a in the circumferential direction (left and right direction in Fig. 3), and is integrally formed with other parts of the outer wall 43 by a narrow width portion 43f that is narrower in the vertical direction than the locking piece 43a. Note that, as shown in Fig. 2 and other figures, the narrow width portion 43f is formed narrower than the locking piece 43a in the radial direction as well as in the vertical direction, and the rotation axis C passes horizontally through the center of gravity of the narrow width portion 43f. With this configuration, the narrow portion 43f twists around the rotation axis C, so that the locking piece 43a can rotate around the rotation axis C as shown in FIG. 4 and FIG.

[0025] In this embodiment, the locking pieces 43a are provided at two opposing positions in the circumferential direction. As shown in Fig. 2 and Fig. 3, below the rotation axis C of the locking pieces 43a, a first pressing portion 43b that protrudes radially outward and abuts against a lower portion of the outer circumferential wall 53 described later, and an engaging protrusion 43d that protrudes radially inward and engages with the annular edge portion 13 are provided. Also, above the rotation axis C of the locking pieces 43a, a second pressing portion 43e that protrudes radially outward and abuts against a locking rib 53a described later is provided.

[0026] The number and circumferential positions of the locking pieces 43a are not limited to the above-mentioned configuration, and they may be arranged in any number and at any circumferential positions.

[0027] 2, the step 44 is provided at a lower radial position on the radially outer side of the upper wall 42, and the radially outer end of the step 44 constitutes a holding protrusion 44a that protrudes radially outward beyond the outer wall 43. As shown in FIG. 5 etc., the holding protrusion 44a engages with the locking rib 53a when the shoulder cover 30 is separated upward from the aerosol container 10, thereby holding the inner cover 40 so that it does not slip downward relative to the outer cover 50. In other words, the shoulder cover 30 can be separated upward from the aerosol container 10 with the inner cover 40 suspended from the outer cover 50.

[0028] 1, the intermediate wall 45 comes into contact with the upper surface of the annular edge portion 13 when the inner cover 40 is attached to the annular edge portion 13. The intermediate wall 45 preferably extends in the circumferential direction, which allows the inner cover 40 to be mounted on the annular edge portion 13 in a stable position.

[0029] Next, the outer cover 50, which is a component of the shoulder cover 30, will be described. The outer cover 50 is made of synthetic resin and covers the inner cover 40 as shown in Fig. 2 and the like, and includes an annular inner peripheral wall 51 located radially inside the inner wall 41 of the inner cover 40, an outer peripheral wall 53 connected to a top wall 52 extending radially outward from approximately the center height of the inner peripheral wall 51 and surrounding the outer wall 43, and an upper peripheral wall 53b erected on the upper surface of the top wall 52 radially inside the outer peripheral wall 53 and supporting a regulating cover 55 (described later) from the inside. In this embodiment, a through hole 54 is provided at the connecting portion between the top wall 52 and the outer peripheral wall 53 (see Fig. 2).

[0030] 1 and 2, the inner peripheral wall 51 has an external thread portion 51a on its outer peripheral surface (the radially outer surface). In addition, a plurality of claw portions 51b projecting radially inward are provided at a lower portion of the inner peripheral surface of the inner peripheral wall 51 at intervals in the circumferential direction. In this embodiment, eight claw portions 51b are provided at equal intervals in the circumferential direction.

[0031] The outer peripheral wall 53 is provided with a locking rib 53a that protrudes radially inward at a height position slightly lower than the inner peripheral surface of the outer peripheral wall 53. Also, the inner peripheral surface of the lower end of the outer peripheral wall 53 is provided with a retraction recess 53c that is recessed radially outward (see FIG. 4, etc.). In this embodiment, the locking rib 53a is provided as a ring-shaped portion that continues in the circumferential direction, but may be disposed intermittently in the circumferential direction as long as it can engage with the second pressing portion 43e and the holding protrusion 44a described later.

[0032] In this embodiment, a regulating cover 55 is provided to surround the outer cover 50 from above and from the radially outer side. The regulating cover 55 constitutes the shoulder cover 30, and as shown in FIG. 1 etc., includes a lower cover 55a surrounding the outer peripheral wall 53 from the radially outer side, an upper cover 55c surrounding the upper peripheral wall 53b from the radially outer side, a step cover 55b covering the through hole 54 from the outside and connecting the lower cover 55a and the upper cover 55c, and a top cover 55d extending radially inward from the upper end of the upper cover 55c and covering the upper peripheral wall 53b and the inner peripheral wall 51 from above. The regulating cover 55 is always attached to the outer cover 50 as a member constituting the shoulder cover 30.

[0033] In this way, by covering the outer cover 50 from the outside with the restricting cover 55, it is possible to effectively prevent the lower part of the outer peripheral wall 53 from being displaced radially outward and thereby to prevent the force pressing the first pressing part 43b of the locking piece 43a from being weakened. The restricting cover 55 is preferably provided at least on the outside of the outer peripheral wall 53, but a configuration without the restricting cover 55 is also possible.

[0034] The material of the restriction cover 55 may be the same synthetic resin material as the shoulder cover 30, or a metal material, etc., to strengthen the force of restricting the radially outward displacement of the outer circumferential wall 53.

[0035] As shown in FIG. 1, the overcap 60 has a cylindrical outer wall 62 hanging down from the outer edge of a top wall 61, and houses the nozzle 20 inside. The overcap 60 is removably attached to the shoulder cover 30 by undercut engagement between the upper cover 55c of the regulating cover 55 and the outer wall 62.

[0036] When the contents are to be sprayed from the aerosol container 10, the user removes the overcap 60 from the state shown in FIG. 1 and then presses down the top of the nozzle 20. This causes the stem 16 to fit into the fitting tube portion 21a of the nozzle 20, and the stem 16 is also pressed down by further pressing the nozzle 20, so that the contents in the aerosol container 10 pass through the internal passages of the vertical tube portion 21 and the horizontal tube portion 22 through the stem 16 and are sprayed out to the outside through the discharge hole 22a. In this embodiment, the claw portion 24 of the nozzle 20 engages with the claw portion 51b of the outer cover 50 to prevent the nozzle 20 from coming off upward. In this embodiment, the claw portion 24 is provided as a ring-shaped portion that continues in the circumferential direction. By providing at least one of the claw portion 24 and the claw portion 51b as a ring-shaped portion that continues in the circumferential direction, it is possible to prevent the claw portion 24 from coming off the claw portion 51b and the nozzle 20 from coming off the shoulder cover 30. Therefore, the claw portion 51b may be provided as a continuous annular portion in the circumferential direction, while the claw portions 24 may be disposed intermittently in the circumferential direction.

[0037] After the contents are used up, the outer cover 50 is rotated in the loosening direction to release the thread engagement between the inner thread portion 41a and the outer thread portion 51a. As a result, the outer cover 50 is displaced upward as shown in FIG. 4, and the pressure of the first pressing portion 43b by the outer peripheral wall 53 as shown in FIG. 2 is released. In addition, the locking rib 53a provided on the outer peripheral wall 53 presses the second pressing portion 43e of the locking piece 43a radially inward. Therefore, as shown by the thick arrow in FIG. 4, the narrow width portion 43f is twisted, and the locking piece 43a rotates around the rotation axis C, and the lower portion is displaced radially outward and the upper portion is displaced radially inward. Therefore, the engagement between the engagement protrusion 43d of the locking piece 43a and the annular edge portion 13 is released.

[0038] 4, since the inner surface of the lower end of the outer peripheral wall 53 is provided with the retreat recess 53c, even if the lower part of the locking piece 43a is displaced radially outward, the displacement is not hindered by contact with the outer peripheral wall 53. Therefore, the engagement between the engaging protrusion 43d of the locking piece 43a and the annular edge portion 13 can be reliably released.

[0039] When the outer cover 50 is lifted from the state shown in Fig. 4, the locking ribs 53a of the outer cover 50 engage (contact from below) with the retaining projections 44a of the inner cover 40, and the inner cover 40 is lifted together, as shown in Fig. 5. Furthermore, the claws 51b of the lifted outer cover 50 enter and engage with the retaining recesses 23a (see Fig. 6) provided in the outer cylindrical portion 23 of the nozzle 20, so that the outer cover 50, the inner cover 40, and the nozzle 20 can be removed together, improving the efficiency of the removal process.

[0040] Next, when the aerosol container discharge tool 100 removed from the aerosol container 10 is attached to the aerosol container 10 again, the outer cover 50, the inner cover 40, and the nozzle 20 removed by the operation of FIG. 6 are rotated in the tightening direction with the inner cover 40 placed on the annular edge portion 13 of the mounting cup 12 as shown in FIG. 7. As a result, the outer cover 50 is displaced downward, and the inner surface of the outer peripheral wall 53 displaces the first pressing portion 43b radially inward, so that the locking piece 43a rotates around the rotation axis C in the direction shown by the thick arrow in FIG. 7. Then, the engaging protrusion 43d engages with the annular edge portion 13, and the inner cover 40 is held by the annular edge portion 13 in a non-detachable manner. Also, the claw portion 24 of the nozzle 20 engages with the claw portion 51b of the outer cover 50 to be held in a non-detachable manner.

[0041] 7, etc., the locking piece 43a is formed to be thinner at a portion near the approximate center height compared to the upper end and the lower end. Therefore, since the locking piece 43a is configured to be easily bent against an external force, the locking piece 43a itself is bent by the radially inward pressure from the outer circumferential wall 53 to the first pressing portion 43b, so that the engagement between the inner cover 40 and the annular edge portion 13 can be more reliably performed.

[0042] Furthermore, even if the aerosol container 10 is dropped and hits the floor in an inverted position, the impact can be absorbed by the intermediate wall 45 that abuts against the upper surface of the annular edge portion 13, thereby making it possible to prevent problems such as deformation or damage to the mounting cup 12.

[0043] In this embodiment, by attaching the overcap 60 to the outer cover 50, the nozzle 20 is effectively prevented from being accidentally operated or from being susceptible to adhesion of dust, etc. Even if the nozzle 20 is dropped in this state and hits the floor in an upside-down position, the impact transmitted from the overcap 60 can be received by the intermediate wall 45 that abuts against the upper surface of the annular edge portion 13, so that it is possible to suppress problems such as deformation or damage of the mounting cup 12.

[0044] As described above, this embodiment is an aerosol container discharger 100 that can be attached to an aerosol container 10 that discharges the contents by pressing down a stem 16, and includes a shoulder cover 30 that is attached to an annular edge portion 13 formed on a mounting cup 12 of the aerosol container 10, and a nozzle 20 that is arranged radially inside the shoulder cover 30 and sprays the contents in the aerosol container 10. The shoulder cover 30 has an inner cover 40 that is attached to the annular edge portion 13, and an outer cover 50 that covers the inner cover 40. The inner cover 40 has an inner wall 41 that is located radially inside the annular edge portion 13 and has an internal thread portion 41a on its inner circumferential surface, and an outer cover 50 that is located radially outside the annular edge portion 13. The outer cover 50 has an inner circumferential wall 51 located radially inside the inner wall 41 and having an outer circumferential surface which has an outer thread portion 51a that engages with the inner thread portion 41a, and an outer circumferential wall 53 connected to the inner circumferential wall 51 via a top wall 52 and surrounding the outer wall 43 from the radial outside, and the outer cover 50 is displaced downward relative to the inner cover 40 due to the threaded engagement between the inner thread portion 41a and the outer thread portion 51a, so that the lower part of the outer circumferential wall 53 presses the lower part of the locking piece 43a, and the lower part of the locking piece 43a engages with the annular edge portion 13. By adopting such a configuration, the lower part of the locking piece 43a that rotates around the rotation axis C is pressed from the outside in the radial direction to engage the locking piece 43a with the annular edge portion 13, and as a result, the shoulder cover 30 is attached to the aerosol container 10. In addition, by releasing the pressure on the lower part of the locking piece 43a, the lower part of the locking piece 43a can be easily displaced in a direction away from the annular edge portion 13. Therefore, the shoulder cover 30 can be easily removed from the aerosol container 10.

[0045] In this embodiment, the locking piece 43a is configured to have a first pressing portion 43b that protrudes radially outward and can abut against the lower portion of the outer circumferential wall 53, and an engaging protrusion 43d that protrudes radially inward and engages with the annular edge portion 13, below the rotation axis C. By adopting such a configuration, the outer circumferential wall 53 is displaced downward to press the first pressing portion 43b that protrudes radially outward, displacing the lower portion of the locking piece 43a further radially inward, and the engaging protrusion 43d that protrudes radially inward can be engaged with the annular edge portion 13 more strongly.

[0046] In this embodiment, the inner surface of the outer peripheral wall 53 is provided with a locking rib 53a protruding radially inward, and a second pressing portion 43e protruding radially outward and capable of contacting the locking rib 53a is provided above the rotation axis C of the locking piece 43a. By adopting such a configuration, the locking rib 53a protruding radially inward can be contacted with the second pressing portion 43e protruding radially outward by displacing the outer peripheral wall 53 upward, thereby displacing the upper portion of the locking piece 43a further radially inward. Therefore, the lower portion of the locking piece 43a can be displaced further radially outward to more reliably release the engagement between the engagement protrusion 43d and the annular edge portion 13.

[0047] In this embodiment, a retaining projection 44a projecting radially outward is provided above the locking piece 43a in the inner cover 40, and the retaining projection 44a engages with the locking rib 53a to hold the inner cover 40 so that it does not slip downward relative to the outer cover 50. By adopting such a configuration, the inner cover 40 can be pulled up together with the outer cover 50 by pulling it up, and separated from the aerosol container 10, thereby making it possible to efficiently separate the aerosol container discharge tool 100 from the aerosol container 10 and to attach the aerosol container discharge tool 100 to another aerosol container 10.

[0048] In this embodiment, a restricting cover 55 that restricts radially outward displacement of the outer peripheral wall 53 is attached to at least the outer surface of the outer peripheral wall 53 of the outer cover 50. By adopting such a configuration, when the outer peripheral wall 53 is displaced downward to press the first pressing portion 43b, it is possible to effectively prevent the outer peripheral wall 53 from being displaced radially outward and the pressing force pressing the first pressing portion 43b from being weakened.

[0049] In this embodiment, the locking pieces 43a are configured to be integral with other parts of the outer wall 43 via narrow width portions 43f that are provided on both circumferential sides of the locking pieces 43a and have a narrower width at least in the up-down direction at the height position of the rotation axis C. By adopting such a configuration, for example, the locking pieces 43a and the narrow width portions 43f can be formed by cutting off the parts in an injection molding die, so that the shoulder cover 30 can be easily removed from the aerosol container 10 without complicating the assembly process.

[0050] Although the present disclosure has been described based on the drawings and embodiments, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these modifications and corrections are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to cause logical inconsistency, and multiple components can be combined into one or divided. It should be understood that these are also included in the scope of the present invention.

[0051] For example, an identification mechanism for identifying the reaching of the tightening open area of ​​the outer cover 50 where the engagement between the inner cover 40 and the outer cover 50 is released as the outer cover 50 is rotated in the loosening direction may be provided between the inner cover 40 and the outer cover 50. A specific configuration of the identification mechanism may be, for example, a pair of protrusions between the inner wall 41 and the inner peripheral wall 51 or between the outer wall 43 and the outer peripheral wall 53, which give a clicking sensation when the outer cover 50 is rotated in the loosening direction and reaches the tightening open area, by one protrusion climbing over the other, but various other known configurations may also be applied.

[0052] Furthermore, by providing a visible portion of the outer cover 50 or the restricting cover 55 with an indication (for example, an arrow) indicating at least one of the tightening direction and the loosening direction, the shoulder cover 30 can be attached and removed more easily.

[0053] In addition, the overcap 60 may or may not be used. When the overcap 60 is not used, the tip of the nozzle 20 may have a length that extends beyond the shoulder cover 30. [Industrial Applicability]

[0054] According to the present disclosure, it is possible to provide a new aerosol container discharge tool 100 that enables the shoulder cover 30 to be easily removed from the aerosol container 10. [Explanation of symbols]

[0055] 10 Aerosol containers 11 Container body 12 Mounting cup 13 Circular edge 14 Inner diameter side wall 15 Cylindrical section 16 Stem 20 Nozzles 21 Vertical cylinder part 21a Fitting cylinder part 22 Horizontal cylinder part 22a Discharge hole 23 Outer cylinder part 23a Retention recess 24 Claw part 25 Reinforcing rib 30 Shoulder Cover 40 Inner cover 41 Inner wall 41a Internal thread 42 Upper Wall 43 Exterior Wall 43a Locking piece 43b First pressing part 43d Engagement protrusion 43e Second pressing part 43f narrow part 43g Cutout 44 Step part 44a Retaining protrusion 45 Intermediate Wall 50 Outer cover 51 Inner wall 51a External thread 51b Claw part 52 Ceiling wall 53 Outer wall 53a Locking rib 53b Upper peripheral wall 53c Retreat Recess 54 Through hole 55 Regulatory Coverage 55a Lower cover 55b Stepped part cover 55c Top cover 55d Top cover 60 Overcap 61 Top Wall 62 Exterior Wall 100 Aerosol container ejection tool C Rotation axis M Closed space O center axis

Claims

1. An aerosol container discharge tool that can be attached to an aerosol container that discharges contents by pressing a stem, a shoulder cover attached to an annular edge formed on a mounting cup of the aerosol container; a nozzle disposed radially inside the shoulder cover and configured to eject the contents of the aerosol container; Equipped with The shoulder cover has an inner cover attached to the annular edge and an outer cover covering the inner cover, The inner cover is an inner wall located radially inside the annular edge portion and having an internal thread portion on an inner circumferential surface thereof; an outer wall located radially outward of the annular edge; The outer wall is provided with a locking piece that rotates around a rotation axis extending in a horizontal direction to swing above and below the rotation axis in a radial direction, The outer cover is an inner peripheral wall located radially inside the inner wall and having an outer peripheral surface having an outer thread portion that engages with the inner thread portion; an outer circumferential wall that is connected to the inner circumferential wall via a top wall and surrounds the outer wall from the radially outer side; An aerosol container discharge device in which the outer cover is displaced downward relative to the inner cover due to threaded engagement between the inner thread portion and the outer thread portion, causing the lower part of the outer wall to press against the lower part of the locking piece, and the lower part of the locking piece to engage with the annular edge portion.

2. 2. The aerosol container discharge device as described in claim 1, wherein below the rotation axis of the locking piece, there is provided a first pressing portion that protrudes radially outward and is capable of abutting against the lower part of the outer wall, and an engaging protrusion that protrudes radially inward and engages with the annular edge portion.

3. 3. The aerosol container discharge device according to claim 1 or 2, wherein a locking rib protruding radially inward is provided on the inner surface of the outer wall, and a second pressing portion protruding radially outward and capable of abutting against the locking rib is provided above the rotation axis of the locking piece.

4. 4. The aerosol container discharge device according to claim 3, wherein a retaining protrusion protruding radially outward is provided above the locking piece on the inner cover, and the retaining protrusion engages with the locking rib to prevent the inner cover from slipping downward relative to the outer cover.

5. 3. The aerosol container discharge tool according to claim 1, wherein a restricting cover is attached to at least an outer surface of the outer peripheral wall of the outer cover, for restricting radially outward displacement of the outer peripheral wall.

6. 3. The aerosol container discharge device according to claim 1, wherein the locking piece is integrally formed with another portion of the outer wall via a narrow width portion that is provided on both circumferential sides of the locking piece at a height position of the rotation axis and that has a narrower width at least in the up-down direction.

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