JP4757141B2 - Cap for aerosol container - Google Patents

Description

  The present invention relates to an aerosol container cap, and in particular, is attached to a shoulder cover that is attached to surround a stem provided on a top surface portion of a container body, and to be vertically movable along a cylindrical hollow portion inside the shoulder cover. The present invention relates to an aerosol container cap comprising a spout that communicates with a stem and discharges contents from a discharge nozzle.

  The aerosol container is energized by a spring provided in the valve built-in part of the mountain cup that seals the top surface part of the container body by sealing the top surface of the container body with a propellant containing the medicine, cleaning agent, hair agent, etc. as contents inside the container body. By pushing down the stem protruding in the wet state through the spout, the contents are discharged from the spout discharge nozzle as, for example, a sprayed or foamy liquid.

In addition, as such an aerosol container, in view of the ease of operation when pressing the stem through the spout, the appearance of the container, and the like, a shoulder cover disposed around the stem protruding from the top surface portion of the container body (Assembled body) and an aerosol container cap which is attached to the inside of the shoulder cover so as to be movable up and down, and which is connected to the stem and discharges contents from the discharge nozzle (nozzle head). It is disclosed (for example, see Patent Document 1). In the aerosol container described in Patent Document 1, in order to prevent unexpected leakage of the contents, the leg piece provided on the spout can be engaged with and disengaged from the flat plate provided on the shoulder cover by the rotation of the spout. Is locked with the flat plate of the shoulder cover so as to prevent the spout from being pressed to prevent leakage of the contents.
Japanese Patent Laid-Open No. 5-285428

  On the other hand, the aerosol container is required to be developed in various forms depending on the type of contents and the purpose of use. For example, a spout molded as a separate part from the shoulder cover can be pushed from above the shoulder cover so that it can be moved up and down and easily attached so that it does not fall off. There is a case in which it is desired to develop a form that can be moved up and down in a stable state, rather than being engaged in a rotatable manner. In addition, as an aerosol container, there is one that is used while grasping the container body by hand and shaking it and then discharging the contents in a foamed state, for example, and in such an aerosol container, during the operation of shaking the container body It is desired to be able to firmly prevent the spout attached so as to be movable up and down from the shoulder cover fixed to the container body.

  The present invention allows the spout to be pushed from above the shoulder cover so that the spout can be engaged with the shoulder cover so that it can move up and down and not fall off, and the spout can be moved up and down in a stable state with respect to the shoulder cover. An object of the present invention is to provide an aerosol container cap that can effectively prevent a spout attached so as to be movable up and down from a shoulder cover fixed to a container body during an operation of shaking the aerosol container. And

  The present invention relates to a shoulder cover that is attached to surround a stem provided on a top surface portion of a container body of an aerosol container, and is attached so as to be vertically movable along a cylindrical hollow portion inside the shoulder cover. An aerosol container cap comprising a spout that communicates and discharges contents from a discharge nozzle, wherein the shoulder cover extends vertically in at least two locations on the inner peripheral surface of the cylindrical hollow portion. A guide groove having an upper end edge portion serving as a protrusion stopper portion is provided, and the spout is arranged outside the inner cylinder connected to the stem and slides along the inner peripheral surface of the cylindrical hollow portion. The outer cylinder is provided with a loosely engaging engagement portion including a leaf spring elastic portion and a guide protrusion, and the loosely engaging engagement portion is provided at a position corresponding to the guide groove in the circumferential direction of the outer cylinder. The guide protrusion The spout is vertically moved along the groove so as to be slidable in the vertical direction, and the spout is moved up and down with respect to the shoulder cover while being prevented from falling off by the protrusion stopper portion. The leaf spring elastic part is formed with a notch extending from the lower end edge of the outer cylinder to the upper side of the guide protrusion on one side adjacent to the circumferential direction of the outer cylinder across the guide protrusion. The above object is achieved by providing an aerosol container cap capable of elastically deforming a peripheral portion including a protrusion in the shape of a leaf spring radially inward of the outer cylinder.

  According to the aerosol container cap of the present invention, the spout can be pushed from above the shoulder cover so as to be able to move up and down and not fall off, and the spout can be moved up and down in a stable state with respect to the shoulder cover. In addition, it is possible to effectively prevent the spout attached so as to be movable up and down from the shoulder cover fixed to the container body during the operation of shaking the aerosol container.

  As shown in FIGS. 1 (a) and 1 (b), an aerosol container cap 10 according to a preferred embodiment of the present invention contains a stock solution of shaving foam as a content in a container body 12, for example, and is mixed with a propellant. The container body 12 is used by being attached and fixed to the upper end portion of the aerosol container 11 to be discharged as a foamy liquid. In particular, when the aerosol container 11 is used, the container main body 12 is sufficiently mixed with the stock solution of the shaving foam and the propellant. In order to effectively prevent the spout 13 of the aerosol container cap 10 from falling off the shoulder cover 14 fixed to the container body 12 even when the aerosol container 12 is vigorously shaken up and down by gripping. It has been adopted.

  Here, the aerosol container 11 to which the cap 10 is mounted has a mountain cup 15 that encloses the contents together with the propellant inside the container body 12 and seals the top surface portion of the container body 12 (see FIG. 2B). The stem 16 (see FIG. 2B) protruding in a state of being biased upward by a spring provided in the valve built-in portion of the cap 10 is pushed down through the spout 13 of the cap 10 so that the contents are foamed liquid. Are discharged from the discharge nozzle 17 of the spout 13. Further, according to the present embodiment, the shoulder cover 14 of the cap 10 is attached to the upper end portion of the aerosol container 10 so as to surround the stem 16 protruding upward from the top surface portion of the container body 12. A spout 13 communicating with the stem 16 is engaged with the inner cylindrical hollow portion 18 (see FIG. 2B) so as to be movable up and down, and a pressing portion 19 disposed above the shoulder cover 14 of the spout 13 is provided. By pressing down the stem 16 while pressing, the contents are discharged from the discharge nozzle 17.

  And the cap 10 for aerosol containers of this embodiment is provided in the top | upper surface part of the container main body 12 of the aerosol container 11, as shown to Fig.2 (a), (b) and Fig.3 (a), (b). A shoulder cover 14 that is attached to surround the stem 16 and a cylindrical hollow portion 18 inside the shoulder cover 14 are attached so as to be movable up and down. A cap 10 comprising a spout 13 for discharging a shaving foam, wherein a shoulder cover 14 extends vertically in at least two locations on the inner peripheral surface 18a of the cylindrical hollow portion 18, and the upper end edge is a protrusion stopper. The guide groove 21 is formed as a portion 20 (see FIGS. 4A and 4B), and the spout 13 is disposed outside the inner tube 22 connected to the stem 16 so as to Inside The outer cylinder 23 which slides along the surface 18a, and a loosely engaging portion 26 of the guide projections 25. leaf spring elastic section 24 (see Figure 5 (a)). The loose fitting engagement portions 26 are respectively provided at positions corresponding to the guide grooves 21 of the shoulder cover 14 in the circumferential direction of the outer cylinder 23, and the guide protrusions 25 are engaged with the guide grooves 21 so as to be slidable in the vertical direction. Thus, the spout 13 is moved up and down with respect to the shoulder cover 14 while preventing the protrusion stopper portion 20 from falling off. Further, the leaf spring elastic portion 24 of the loosely engaging engagement portion 26 is adjacent to the circumferential direction of the outer cylinder 23 with the guide projection 25 interposed therebetween, as shown in FIGS. 5 (a), 5 (c), and 5 (d). A notch 27 extending from the lower end edge 23a of the outer cylinder 23 to the upper side of the guide protrusion 25 is formed on the right side in the present embodiment, so that the peripheral portion including the guide protrusion 25 is arranged in the radial direction of the outer cylinder 23. It can be elastically deformed in the form of a leaf spring inward.

  Moreover, in this embodiment, as shown in FIG.2 (b), the guide groove 21 is provided in two places facing the radial direction of the internal peripheral surface 18a of the cylindrical hollow part 18 of the shoulder cover 14, The loose fitting engagement portions 26 are respectively provided at positions corresponding to the guide grooves 21 in the circumferential direction of the outer cylinder 23.

  Furthermore, in this embodiment, as shown in FIGS. 5 (c) and 5 (d), the notches 27 for forming the leaf spring elastic portion 24 of the loosely engaging engagement portion 26 are provided at two locations facing each other in the radial direction. In the loose fitting engagement portion 26, it is disposed adjacent to the same side in the circumferential direction of the outer cylinder 23 sandwiching the guide protrusion 25 (right side in this embodiment), so that it is opposed to the radial direction of the outer cylinder 23. It has come to be.

  According to this embodiment, the shoulder cover 14 constituting the aerosol container cap 10 is a synthetic resin molded product, and is fixed to the mountain cup 15 of the container body 12 as shown in FIGS. 4 (a) and 4 (b). And an upright wall portion 29 having a hollow double structure that rises in a substantially cylindrical shape upward from the annular fixed portion 28, and the inside of the inner wall 29 a of the upright wall portion 29 moves up and down the spout 13. It is a cylindrical hollow portion 18 that can be engaged. The bottom portion of the cylindrical hollow portion 18 is closed above the annular fixing portion 28 by a bottom plate 30 integrally joined to the lower end portion of the inner wall 29 a of the rising wall portion 29. An opening sleeve 34 into which the stem 16 of the container body 12 and the inner cylinder 22 of the spout 13 are inserted so as to move up and down is provided at the center portion of the bottom plate 30.

  In addition, a front vertical groove 31 is formed in the rising wall portion 29 of the shoulder cover 14 on the front surface side where the discharge nozzle 17 of the spout 13 is disposed, and is cut out in a band shape downward from the upper end portion thereof. (See FIG. 2 (a)). A front guide pin 32 protruding from the outer peripheral surface of the outer cylinder 23 of the spout 13 described later is loosely disposed in the front vertical groove 31 so as to be movable up and down.

  On the other hand, on the rear surface side of the rising wall portion 29 of the shoulder cover 14, a finger attaching concave portion 33 is formed by cutting out in a substantially semicircular shape downward from the upper end portion thereof. When the aerosol container 11 is gripped and used by the hand, the finger-attached recess 33 is formed so that the pressing wall 19 of the spout 13 can be smoothly pressed from the rear side of the container 11 with the finger. The finger-attached concave portion 33 also serves as a locking concave portion for locking a tongue-like locking piece 41 of a stopper 40 described later (see FIG. 1A). .

  The guide groove 21 is a vertically long groove that engages the guide protrusion 25 of the loose fitting engagement portion 26 provided on the outer cylinder 23 of the spout 13 so as to be movable up and down. In this embodiment, the shoulder cover 14 rises. The inner wall 29a of the wall portion 29 is cut into a strip shape, and is formed with a width of, for example, 5 mm and a height from the bottom plate 30 of about 10 mm. Further, the guide groove 21 does not reach the upper end edge of the rising wall portion 29, but is formed at a height up to the middle portion thereof, so that the notch edge at the upper end of the guide groove 21 is loosely engaged. It functions as a projection stopper portion 20 that prevents the guide projection 25 that has been removed from falling upward.

  The spout 12 that constitutes the aerosol container cap 10 of the present embodiment together with the shoulder cover 14 is also a synthetic resin molded product, as shown in FIGS. 5 (a) to 5 (d), and is substantially concentrically arranged. The cylindrical inner cylinder 22 and the outer cylinder 23, and the substantially disk-shaped pressing part 19 which covers these upper end parts integrally are comprised. In addition, a discharge nozzle 17 that projects forward from the pressing portion 19 is integrally connected to the pressing portion 19.

  The inner cylinder 22 is formed with a vertical flow path 35 of contents extending in the longitudinal direction along the central axis of the spout 13 on the inner side, and the stem 16 of the aerosol container 11 is fitted at the lower end thereof. The pressure portion 19 communicates with the stem 16 by being inserted (see FIGS. 2B and 3B), and connects the contents injected from the stem 16 to the vertical flow path 35 and the upper end portion thereof. The liquid is sent out through a discharge flow path 36 formed inside and discharged from the discharge nozzle 17. Further, when the stem 16 is fitted into the lower end portion of the inner cylinder 22, the spout 13 is supported by the stem 16, and the content is ejected from the stem 16 by pushing down the pressing portion 19 against the urging force of the stem 16. Let On the other hand, when the pressing to the pressing portion 19 is released, the spout 13 moves upward by the urging force of the stem 16 and blocks the injection of the contents from the stem 15.

  The outer cylinder 23 is formed so that the outer diameter is slightly smaller than the inner diameter of the cylindrical hollow portion 18 inside the shoulder cover 14, and the cylindrical hollow is formed by the inner wall 29 a of the rising wall portion 29 of the shoulder cover 14. The outer peripheral surface of the portion 18 is slid on the inner peripheral surface 18a while being guided by the rising wall portion 29, and the spout 13 is slid up and down with respect to the shoulder cover 14 in a stable state. Further, a front guide pin 32 having a substantially circular drum shape is provided on the outer peripheral surface of the outer cylinder 23 so as to protrude forward from the front side discharge nozzle 17. As described above, when the spout 13 is engaged with the shoulder cover 14, the front guide pin 32 is loosely fitted in the front vertical groove 31 provided in the rising wall portion 29 of the shoulder cover 14 so as to be vertically movable. Further, on the outer peripheral surface of the outer cylinder 23, a loose fitting engaging portion 26 including a leaf spring elastic portion 24 and a guide projection 25 is provided at a position approximately 90 degrees away from the front guide pin 32 on both sides in the circumferential direction. A pair is provided to face each other.

  In the present embodiment, the guide protrusion 25 of the loose fitting engagement portion 26 has a width of, for example, about 4.5 mm that can be loosely fitted in the guide groove 21 of the shoulder cover 14, and the lower surface is, for example, the outer peripheral surface of the outer cylinder 23. And a cross section of a substantially right triangle in which the upper surface is a vertical surface with respect to the outer peripheral surface of the outer cylinder 23. The guide protrusion 25 is provided as a protrusion having a protrusion height of about 2.7 mm, for example, and its vertical surface is disposed at a height of about 7 mm from the lower end edge 23 a of the outer cylinder 23. Since the lower surface of the guide protrusion 25 is an inclined surface, the operation of pushing the outer cylinder 23 from above the shoulder cover 14 and engaging the spout 13 to the shoulder cover becomes easy. Since the upper side surface of the guide projection 25 is a vertical surface, the vertical surface is reliably brought into contact with the projection stopper portion 20 at the upper end of the guide groove 21, and the engaged guide projection 25 is removed from the guide groove 21. It is possible to effectively prevent the dropout.

  In the present embodiment, the leaf spring elastic portion 24 of the loosely engaging engagement portion 26 is arranged on one side (right side in the present embodiment) adjacent to the circumferential direction of the outer cylinder 23 with the guide protrusion 25 interposed therebetween. It is provided by forming a notch 27 that extends from the lower end edge 23 a to above the guide protrusion 25. The cut 27 is formed in a straight line along the right edge of the guide protrusion 25 with a cut width of, for example, about 1.0 mm and a length of, for example, about 9 mm from the lower end edge 23 a of the outer cylinder 23. By providing the notch 27, the peripheral portion including the guide protrusion 25, which is surrounded by the notch 27 and the lower end edge 23 a below the guide protrusion 25, is a leaf spring radially inward of the outer cylinder 23. Thus, the plate spring elastic part 24 functions.

  The pressing portion 19 of the spout 13 is a portion that is provided in a substantially disk shape with its peripheral edge portion 19 a projecting to the outside of the outer cylinder 23, and the outer diameter thereof is the upper end portion of the rising wall portion 29 of the shoulder cover 14. Is slightly smaller than the outer diameter. Further, the discharge nozzle 17 is connected to the pressing portion 19 so as to protrude forward, and a discharge flow channel 36 extending in the lateral direction from the upper end portion of the vertical flow channel 35 is provided inside the pressing portion 19. The length of the discharge nozzle 17 communicates with the vertical flow path 35 and reaches the tip of the discharge nozzle 17.

  In the present embodiment, for example, in a state before the use of the aerosol container 11, the distance between the lower surface of the peripheral edge portion 19 a projecting outside the pressing portion 19 and the upper end portion of the rising wall portion 29 of the shoulder cover 14. As shown in FIGS. 1 (a) and 1 (b), the spout 13 can be prevented from being inadvertently pushed down by inserting a band plate ring-shaped stopper 40 into the portion. As shown in FIG. 6, the stopper 40 is a synthetic resin molded product, is formed in a substantially circular ring shape, and has a part in the circumferential direction as an expanded portion 42 in an angular range of, for example, 60 to 170 degrees. It has a removed shape. The stopper 40 can be easily attached and detached around the outer cylinder 23 of the spout 13 via the expanding portion 42. Further, the stopper 40 is provided with a tongue-like locking piece 41 which is disposed on the opposite side facing the widened portion 42 and protrudes downward from the lower edge of the stopper 40. By inserting and locking the tongue-shaped locking piece 41 into the finger attaching concave portion 33 formed on the rear surface side of the rising wall portion 29 of the shoulder cover 14, the stopper 40 mounted below the pressing portion 19 is rotated. It is possible to prevent the displacement.

  The aerosol container cap 10 of the present embodiment having the above-described configuration is configured such that after the outer tube 23 is pushed in from above the shoulder cover 14 and the spout 13 is engaged with the shoulder cover, the inner periphery of the annular fixing portion 28 of the shoulder cover 14 is obtained. The engagement protrusion 28a (see FIG. 4 (b)) formed on the surface is engaged with the upper peripheral edge of the mountain cup 15 to be attached and fixed to the upper end of the container body 12 of the aerosol container 11, and the aerosol container 11 is ready for use. As a result, the aerosol container 11 is shaken well to mix the stock solution of the shaving foam and the propellant, and is used while pressing the pressing portion 19 of the spout 13 and discharging the shaving foam from the discharge nozzle 17 in the form of foam. It is done.

  According to the aerosol container cap 10 of the present embodiment, the spout 13 can be pushed from above the shoulder cover 14 and can be engaged with the shoulder cover 14 so that the spout 13 can move up and down and does not fall off. The spout 13 can be moved up and down in a stable state with respect to 14, and the spout 13 attached so as to be movable up and down is dropped from the shoulder cover 14 fixed to the container body 12 during the operation of shaking the aerosol container 11. Can be effectively prevented.

  That is, according to the present embodiment, the spout 13 has the outer cylinder 23 that slides along the inner peripheral surface 18 a of the cylindrical hollow portion 18 of the shoulder cover 14, and the leaf spring elastic portion 24 and the guide protrusion 25. A loose fitting engagement portion 26 is provided, and the guide protrusion 25 is engaged with a guide groove 21 formed in the inner peripheral surface 18 a of the cylindrical hollow portion 18 of the shoulder cover 14, so that the spout 13 is attached to the shoulder cover 14. Since the plate spring elastic portion 24 is elastically deformed inward in the radial direction of the outer cylinder 23, the guide protrusion 25 can be engaged with the guide groove 21 by pushing the spout 13 into the shoulder cover 14. It is possible to move the spout 13 up and down in a stable state, preferably in combination with guiding the front guide pin 32 along the front longitudinal groove 31 while guiding the guide 25 along the guide groove 21. .

  Further, in the present embodiment, the leaf spring elastic portion 24 of the loose fitting engaging portion 26 is cut on one side in the circumferential direction adjacent to the guide projection 25 from the lower end edge portion 23 a of the outer cylinder 23 to above the guide projection 25. 27 is formed so that it can be elastically deformed into a leaf spring shape. Therefore, the leaf spring elastic portion 24 is not excessively elastically deformed, and the amount of elastic deformation after loosely engaging with the guide groove 21 is reduced. It is possible to secure a sufficient allowance for the undercut portion locked to the protrusion stopper portion 20 of the guide groove 21, so that even when the aerosol container 11 is vigorously shaken, it is fixed to the container body 12. It is possible to effectively avoid the spout 13 from falling off the shoulder cover 14.

  Furthermore, in this embodiment, the guide groove 21 is provided in two places which oppose the radial direction of the internal peripheral surface 18a of the cylindrical hollow part 18 of the shoulder cover 14, and the loose fitting engagement part 26 is the outer cylinder. Since it is provided at a position corresponding to the guide groove 21 in the circumferential direction 23, the spout 13 can be moved up and down in a more stable state.

  Furthermore, in the present embodiment, the notches 27 for forming the leaf spring elastic portion 24 of the loose fitting engagement portion 26 sandwich the guide protrusion 25 at the two loose engagement engagement portions 26 opposed in the radial direction. Since it is provided adjacent to the same circumferential side of the outer cylinder 23 (right side in this embodiment), the spout 13 is prevented from being tilted when the spout 13 is pushed in from above the shoulder cover 14. It becomes possible to push in the spout 13 in a well-balanced and stable state.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the guide groove and the loose fitting engagement portion are not necessarily provided at two locations facing the radial direction of the cylindrical hollow portion or the outer peripheral surface of the outer cylinder, for example, without being opposed to the radial direction, This can be provided at three locations at equal angular intervals, and can also be provided at four or more locations. In addition, the notches for forming the leaf spring elastic portion of the loose fitting engagement portion are adjacent to the same side in the circumferential direction with the guide projections sandwiched between the two loose engagement engagement portions opposed to the radial direction of the outer cylinder. It is not always necessary to provide them.

(A) of the aerosol container with which the cap for aerosol containers which concerns on preferable one Embodiment of this invention was attached is a side view, (b) is a front view. BRIEF DESCRIPTION OF THE DRAWINGS (a) at the time of the rest before discharge of the content of the cap for aerosol containers which concerns on preferable one Embodiment of this invention is a front view, (b) is sectional drawing. BRIEF DESCRIPTION OF THE DRAWINGS (a) at the time of discharge of the content of the cap for aerosol containers which concerns on preferable one Embodiment of this invention is a front view, (b) is sectional drawing. (A) is a perspective view of a shoulder cover, (b) is sectional drawing of a shoulder cover. (A) is a side view of a spout, (b) is a sectional view of the spout, (c) is a front view of the spout, and (d) is a rear view of the spout. It is a perspective view of a stopper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Aerosol container cap 11 Aerosol container 12 Container main body 13 Spout 14 Shoulder cover 15 Mountain cup 16 Stem 17 Discharge nozzle 18 Cylindrical hollow part 18a Cylindrical hollow part inner peripheral surface 19 Press part 20 Protrusion stopper part 21 Guide groove 22 Inside Cylinder 23 Outer cylinder 23a Lower end edge 24 of outer cylinder Leaf spring elastic part 25 Guide projection 26 Free fitting engagement part 27 Notch 29 Rising wall part 40 Stopper

Claims (3)

A shoulder cover that is attached to surround the stem provided on the top surface of the container body of the aerosol container, and is attached so as to be movable up and down along a cylindrical hollow portion inside the shoulder cover, and communicates with the stem to discharge. A cap for an aerosol container comprising a spout that discharges contents from a nozzle,
The shoulder cover includes a guide groove extending in the vertical direction and having an upper end edge serving as a protrusion stopper at at least two locations on the inner peripheral surface of the cylindrical hollow portion.
The spout is a loose fit engagement member comprising a leaf spring elastic portion and a guide protrusion on an outer cylinder which is disposed outside an inner cylinder connected to the stem and slides along an inner peripheral surface of the cylindrical hollow portion. It has a wearing part,
The loose fitting engaging portions are respectively provided at positions corresponding to the guide grooves in the circumferential direction of the outer cylinder, and by engaging the guide protrusions so as to be slidable in the vertical direction along the guide grooves, The spout is moved up and down with respect to the shoulder cover while preventing dropping by the protrusion stopper portion,
Further, the leaf spring elastic portion of the loose fitting engaging portion forms a notch extending from the lower end edge of the outer cylinder to the upper side of the guide protrusion on one side adjacent to the outer cylinder in the circumferential direction with the guide protrusion interposed therebetween. By doing so, the part for the periphery including this guide protrusion can be elastically deformed in the shape of a leaf spring radially inward of the outer cylinder.   The guide groove is provided in at least two radially opposed inner circumferential surfaces of the cylindrical hollow portion of the shoulder cover, and the loose fitting engagement portion is the guide in the circumferential direction of the outer cylinder. The aerosol container cap according to claim 1, which is provided at a position corresponding to the groove. The notches for forming the leaf spring elastic portion of the loose fitting engagement portion are formed on the outer cylinder with the guide projections sandwiched between the two loose engagement engagement portions opposed in the radial direction of the outer cylinder. The cap for an aerosol container according to claim 2, wherein the cap is disposed adjacent to the same side in the circumferential direction so as to be opposed to the radial direction of the outer cylinder.

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