JP3691104B2 - Stick-shaped cosmetic container - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a stick-shaped cosmetic container having an airtight function in a cap fitting structure.
[0002]
[Prior art]
Generally, in a stick-shaped cosmetic container such as a lipstick container, a fitting engagement function and an airtight function of a cap are incorporated from the viewpoint of preventing the volatile cosmetic material from being dried and solidified.
[0003]
As an airtight structure in this kind of stick-shaped cosmetic container, there is one disclosed in Japanese Utility Model Publication No. 5-34579. As shown in FIGS. 8 and 9, this cap 113 is disposed inside the cylindrical cap 113 that is detachably fitted to the fitting portion 107 a of the middle tool cylinder 107 disposed outside the cylindrical container body. A resin cap body 114 having the same shape as the above is fixedly fitted and fixed by an appropriate means such as an adhesive, and an inner diameter widened portion 115 is formed at the lower portion of the cap body 114 to provide a fitting wall 114a having appropriate elasticity. A gap 116 for promoting the elasticity of the fitting wall 114a is interposed between the fitting wall 114a and the cap 113, and the lower end of the fitting wall 114a warps outward and the tip of the cap 113 A contact piece 114b that contacts the inner wall surface is provided, and an annular convex portion 114c that protrudes from the inner peripheral surface of the fitting wall 114a of the cap body 114 is in close contact with the outer peripheral surface of the inner tube 107, and the cap body 114 is fitted. Formed on the wall 114a Annular projection 107c projecting from the outer peripheral surface of Chugu tube 107 in engagement recesses 114d are those configured to closely fit engagement. In addition, 101 is a saddle tube, 102 is a spiral tube, 103 is a spiral groove, 104 is a body tube, 105 is an annular groove, 106 is an inner peripheral rib, 108 is a cosmetic dish, 109 is an annular rib, and 110 is a pedestal. .
[0004]
Under such a configuration, when the cap 113 is put on and attached, the fitting wall 114a of the cap body 114 is fitted into the fitting portion 107a of the intermediate tool tube 107, and the cap body 114 is fitted to the outer peripheral surface of the fitting portion 107a. The annular convex portion 114 c is in close contact, and the annular convex portion 107 c protruding from the outer peripheral surface of the fitting portion 107 a is closely fitted and engaged with the annular concave portion 114 d formed in the fitting wall 114 a of the cap body 114. A stopped state is ensured, and intrusion of outside air into the container body can be prevented. That is, since the airtight sealing is performed at two locations, that is, the close contact of the annular convex portion 114c with the middle tool tube 107 and the close fitting engagement of the annular convex portion 107c with the annular concave portion 114d, compared with the case of one location, A better airtight effect can be obtained.
[0005]
[Problems to be solved by the invention]
However, in the case of the prior art, the pressing force that provides an airtight action is ensured by the contact piece 114b provided at the lower portion of the fitting wall 114a warping outward and its tip contacting the inner peripheral surface of the cap 113. That is, the two contact locations of the annular convex portion 114c and the annular concave portion 114d obtain an elastic return force toward the inside at each location, with the location of the contact piece 114b away from the location as the reaction point. In this case, since the cap 113 side is also a gap at the two contact points of the annular convex portion 114c and the annular concave portion 114d, the annular convex portion 114c and the annular concave portion 114d are elastically bent, and a firm reaction force is obtained. May not be able to be obtained. For this reason, it is difficult to maintain the contact pressure of the annular protrusion 114c with respect to the fitting portion 107c and the contact pressure of the annular recess 114d with respect to the annular protrusion 107c.
[0006]
Therefore, an object of the present invention is to provide a stick-shaped cosmetic container that can solve the above-described problems and obtain a firm reaction force to obtain a good airtight state.
[0007]
[Means for Solving the Problems]
In order to achieve this object, a stick-shaped cosmetic container according to the present invention includes a cylindrical container body in which a body cylinder and a cosmetic dish cylinder are arranged in this order in a body cylinder, and a cylindrical cap fitted to the cylindrical container body. In the stick-shaped cosmetic container constituted by the above, the main body cylinder is formed with a fitting cylinder part fitted to the cap at the upper part thereof, and a raised part is formed at the lower outer periphery of the fitting cylinder part. An annular rib protrudes from the circumferential surface along the circumferential direction, and a resin seal member is provided along the inner surface of the cap. The seal member is fitted to the seal member above the raised portion. A thin cylindrical fitting seal portion that abuts the cylindrical portion is formed, and an engagement portion that engages with an annular rib of the fitting cylindrical portion is provided on the inner surface of the cap. To do.
[0008]
[Action]
According to the stick-shaped cosmetic container of the present invention having the above configuration, the annular rib provided on the fitting cylinder portion of the main body cylinder is directly engaged with the engaging portion of the cap inner surface, and the fitting portion is configured. A thin fitting seal portion is suspended from a seal member separate from the cap in a cylindrical shape, and is fitted so as to be in close pressure contact with the fitting cylinder portion of the main body cylinder to form a seal portion. The cap is attached to the container body. Accordingly, the seal part and the fitting part can be made independent independently to eliminate the influence of the fitting part on the seal part, and the seal part and the fitting part can be separated functionally and structurally. Thus, it is possible to ensure a configuration that does not interfere with each other, and to ensure the sealing function.
[0009]
【Example】
Hereinafter, the present invention will be described based on illustrated embodiments. 1 and 2, the stick-shaped cosmetic container 1 is mainly composed of a cylindrical container main body 2 and a cylindrical cap 3 attached thereto. In this embodiment, the cap 3 is made of a synthetic resin, but can be made of metal.
[0010]
The cylindrical container main body 2 includes a main body cylinder 10 that forms an outer shell thereof, a body cylinder 20 that is disposed inside the main body cylinder 10, and a cosmetic dish cylinder 30 that is disposed further inside the body cylinder 20. ing.
[0011]
A thin fitting tube portion 11 made of resin is integrally formed on the upper portion of the main body tube 10 covered with the cap 3, and the cap 3 is fitted into the fitting tube portion 11. Yes. Further, the fitting cylinder portion 11 is formed thick from the middle portion to the lower portion of the outer peripheral surface thereof, and is formed as an annular raised portion 12 raised from the outer peripheral surface of the fitting cylinder portion 11 with an inclined step 12a. Then, a continuous annular rib 13 is formed on the outer peripheral surface of the raised portion 12 so as to protrude along the circumferential direction.
[0012]
The cosmetic dish cylinder 30 is divided up and down by a partition wall 31, and the upper part thereof is formed as a cosmetic dish 32, and the cosmetics 33 are stored in the cosmetic dish 32.
[0013]
In order to constitute the raising mechanism of the cosmetic dish cylinder 30, a spiral groove 14 is formed on the cylindrical inner peripheral surface of the main body cylinder 10, and the lower part of the cosmetic dish cylinder 30 is provided below. An engaging protrusion 34 is formed so as to protrude outward. The engagement projection 34 of the cosmetic dish cylinder 30 passes through a slit 21 formed in the body tube 20 corresponding to the axial length of the spiral groove 14, and engages in the spiral groove 14 of the main body cylinder 10. Match.
[0014]
Accordingly, when the main body cylinder 10 is rotated relative to the body cylinder 20, the engaging protrusion 34 rises to the upper limit position of the slit 21 along the spiral groove 14 as shown in FIG. The cosmetic material 33 of the dish cylinder 30 protrudes from the main body cylinder 10.
[0015]
On the other hand, the resin cap 3 is formed with an inward projection 3a that engages with the annular rib 13 at the inner lower end. Further, on the inner side of the cap 3, a cylindrical resin product is formed along its inner surface. The sealing member 40 is fitted and fixed by appropriate means such as an adhesive, and the sealing member 40 is detachably fitted to the fitting cylinder portion 11 of the main body cylinder 10 so as to come into pressure contact therewith. Yes.
[0016]
As shown in FIGS. 1 and 3, the seal member 40 is mainly positioned above the fitting cylinder portion 11 when the cap 3 is attached to the main body cylinder 10, and is fitted to the inner peripheral surface of the cap 3. A cylindrical thick part 41 formed slightly thicker than a gap width between the outer peripheral surface of the cylindrical part 11 and a thin cylindrical fitting seal part 42 formed below the thick part 41. It is prepared for. The fitting seal portion 42 is formed in series so as to be sequentially thinner from the thick portion 41 and away from the inner peripheral surface of the cap 3, and overlaps and contacts the outer peripheral surface of the fitting cylindrical portion 11 of the main body cylinder 10. A sealing surface 43 is provided. That is, the fitting seal portion 42 is formed in a thin cylindrical shape extending downward from the thick portion 41 and having its lower end opened, and the length thereof is shown when the cap 3 is fitted. As shown in FIG. 3, the lower end is terminated before the raised portion 12. Then, by forming the fitting seal portion 42 following the thick portion 41 into a thin cylindrical shape with the lower end opened, between the outer peripheral surface of the fitting seal portion 42 and the inner peripheral surface of the cap 3. Is formed with a gap 44 through which the fitting seal portion 42 can be bent outward. In the embodiment of FIG. 3, the fitting seal part 42 is formed in a cylindrical shape that linearly hangs down from the thick part 41, so that it is pressed against the outer peripheral surface of the fitting cylinder part 11 over a predetermined distance. The
[0017]
When the cap 3 is put on the cylindrical container body 2, the annular rib 13 provided on the outer peripheral surface of the raised portion 12 of the fitting cylindrical portion 11 and the inward projection 3 a provided on the inner peripheral surface of the cap 3 are mutually connected. It fits and functions as a fitting part C. That is, the inward projection 3a of the cap 3 rides over the annular rib 13 of the fitting cylinder portion 11, and the inward projection 3a engages with the annular rib 13 from the lower side by this climbing. The fitting state with the cap 3 is maintained. In particular, generally, the fitting cylinder portion 11 is formed of a resin material, and the cap 3 is formed of a metal material. With such a configuration, the fitting cylinder portion 11 is repeatedly formed by repeatedly mounting the cap 3. In this embodiment, since the cap 3 is made of a synthetic resin, unlike the case of a metal, the degree of backlash occurring at the fitting portion can be reduced, and the side is easy to wear. Stable fitting can be obtained.
[0018]
Further, the fitting seal portion 42 of the sealing member 40 functions as a sealing portion A that ensures airtightness between the cap 3 and the cylindrical container body 2 by overlapping with the outer peripheral surface of the fitting cylinder portion 11.
[0019]
According to such a structure, the seal part A and the fitting part C can be made independent independently. That is, the annular rib 13 provided in the fitting cylinder portion 11 of the main body cylinder 10 is directly engaged with the inward projection 3a on the lower inner peripheral surface of the cap 3 to constitute the fitting portion C, and the fitting seal The portion 42 is suspended in a cylindrical shape from a seal member 40 that is separate from the cap 3, and is fitted so as to be in close pressure contact with the fitting tube portion 11 of the main body tube 10 to form a seal portion A. The cap 3 is attached to the cylindrical container body 2. Therefore, the influence of the fitting part C on the seal part A can be eliminated, and the structure in which the seal part A and the fitting part C are separated functionally and structurally so as not to interfere with each other can be secured. The sealing function can be reliably guaranteed. Therefore, as the sealing action in the seal portion A, the fitting seal portion 42 has a fitting cylinder portion 11 as compared with the conventional configuration (see FIG. 9) in which the sealing portion and the fitting portion may affect each other. It is possible to ensure a large abutting force that contacts the outer peripheral surface, and it is possible to ensure good sealing performance over a long period of time.
[0020]
In the said Example, although the sealing surface 43 of the fitting seal part 42 in the sealing member 40 in the cap 3 was formed in the cylindrical body drooping linearly from the thick part 41, it is the form which can exhibit the same function. If there is, it may be formed into a flexible cylindrical shape with the lower end opened, and the configuration shown in FIGS. 4 to 6 can be obtained.
[0021]
FIG. 4 shows an embodiment in which the sealing surface 43 of the fitting seal portion 42 is formed in a cylindrical shape having a side cross section “<” shape that is elastically pressed against the outer peripheral surface of the fitting cylinder portion 11 of the main body cylinder 10. When the cap 3 is mounted, the seal surface 43 comes into contact with the outer peripheral surface of the fitting tube portion 11 and is bent slightly outward in the radial direction, and an airtight pressure contact force is obtained by the return force. .
[0022]
FIG. 5 shows that a hem-expanding taper is formed on the outer peripheral surface of the fitting cylinder portion 11 of the main body cylinder 10, and a corresponding hem-expanding shape is also formed on the inner peripheral surface of the fitting seal portion 42 of the seal member 40. This is an embodiment in which a taper is formed. When the cap 3 is mounted, the taper seal surface 43 comes into surface contact with the outer peripheral taper surface of the fitting tube portion 11 and slightly bends outward in the radial direction. It is configured to obtain an airtight pressure contact force.
[0023]
FIG. 6 shows an embodiment in which a plurality of protrusions 45 are formed along the circumferential direction on the inner peripheral surface of the fitting seal portion 42 of the seal member 40. When the cap 3 is attached, The attached seal surface 43 is configured to come into contact with the outer peripheral surface of the fitting cylinder portion 11 and bend slightly outward in the radial direction, so that an airtight pressure contact force is obtained by the return force.
[0024]
In the embodiment of FIG. 7, instead of providing the inward protrusion 3 a on the inner peripheral surface of the cap 3, a semicircular fitting groove 46 for receiving the annular rib 13 is provided in the circumferential direction.
[0025]
【The invention's effect】
As described above, according to the stick-shaped cosmetic container according to the present invention, the annular rib provided on the fitting cylinder portion of the main body cylinder is directly engaged with the engaging portion of the cap inner surface, and the fitting portion is configured. Further, a tubular fitting body is formed by hanging a thin fitting sealing portion in a cylindrical shape from a sealing member separate from the cap and closely contacting this with the fitting cylindrical portion of the main body cylinder. It is possible to obtain the mounting state of the cap. Accordingly, the seal part and the fitting part can be made independent independently to eliminate the influence of the fitting part on the seal part, and the seal part and the fitting part can be separated functionally and structurally. Thus, it is possible to ensure a configuration that does not interfere with each other, and to ensure the sealing function. Therefore, as a sealing action at the seal portion, compared to the conventional configuration in which the seal portion and the fitting portion may influence each other, a large contact force is ensured so that the fitting seal portion contacts the outer peripheral surface of the fitting cylinder portion. In addition, good sealing performance can be ensured over a long period of time.
[Brief description of the drawings]
FIG. 1 is a front view and a cross-sectional view showing a stick-shaped cosmetic container according to an embodiment of the present invention with a cap attached thereto.
FIG. 2 is a front view and a cross-sectional view showing a stick-shaped cosmetic container according to an embodiment of the present invention with a cap removed.
FIG. 3 is an enlarged cross-sectional view of a main part of FIG.
FIG. 4 is an enlarged sectional view of a main part showing a modified embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view of a main part showing another modified embodiment of the present invention.
FIG. 6 is an enlarged cross-sectional view of a main part showing still another modified embodiment of the present invention.
FIG. 7 is an enlarged cross-sectional view of a main part showing another embodiment of the present invention.
FIG. 8 is a cross-sectional view showing an example of a conventional stick-shaped cosmetic container.
9 is a partially enlarged cross-sectional view of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bar-shaped cosmetic container 2 Cylindrical container main body 3 Cap 3a Inward protrusion 10 Main body cylinder 11 Fitting cylinder part 12 Raised part 12a Inclination step 13 Annular rib 14 Spiral groove 20 Body cylinder 21 Slit 30 Cosmetic dish cylinder 31 Partition wall 32 Cosmetic dish 33 Cosmetic 34 Engagement protrusion 40 Seal member 41 Thick part 42 Fit seal part 43 Seal surface 44 Gap 45 Projection 46 Fit groove A Seal part C Fit part

Claims (1)

In a rod-shaped cosmetic container composed of a cylindrical container main body in which a body cylinder and a cosmetic dish cylinder are arranged in this order in a main body cylinder, and a cylindrical cap fitted to this,
The main body cylinder is formed with a fitting cylinder portion to be fitted to the cap at an upper portion thereof, and a raised portion is formed at a lower outer periphery of the fitting cylinder portion, and an annular shape is formed on the circumferential surface along the circumferential direction. Forming ribs protruding,
In the cap, a resin-made seal member is provided along the inner surface, and a thin cylindrical fitting seal portion that contacts the fitting cylinder portion above the raised portion is provided on the seal member. Forming,
In addition, a stick-shaped cosmetic container characterized in that an engagement portion that engages with the annular rib of the fitting tube portion is provided on the inner surface of the cap.

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