JPH0446680Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a one-touch opening/closing cosmetic container. Specifically, a cap having an application shaft can be opened and closed with one-touch pushing and pulling. This invention relates to a liquid cosmetic container.

Conventional technology and its problems Containers for liquid cosmetics such as mascara and eyeliner consist of a container body that houses the cosmetic and a cap part that is equipped with an applicator shaft that is inserted into the container body. Generally, the cap part is opened and closed by a screw attached to the mouth part of the container body. Therefore, it is necessary to screw the cap part and the container body several times in order to open and close the container, which is problematic in that it does not meet the modern consumer preference for quick and easy packaging. Attempts have been made to use multi-thread threads for the opening, such as three threads, four threads, etc., but even with multi-thread threads, the basic operations of tightening the cap and container and screwing them open are still necessary. Furthermore, the use of multi-thread screws poses another problem in that the cap tends to loosen unexpectedly, so basically no satisfactory solution has been obtained.

Problems to be Solved by the Invention The present invention was developed in an attempt to resolve the dissatisfaction associated with the screw-type opening and closing of liquid cosmetic containers. To provide a one-touch opening/closing container for liquid cosmetics from which the cap can be pulled out simply by twisting the cap and pulling it linearly.

Means for Solving the Problems In order to solve the above problems, the present invention provides a cam guide surface on the outer circumferential surface of the cam cylinder that projects into the opening of the container body, and correspondingly provides a cam guide surface on the inner circumference of the cap body on the opening side. A cam protrusion is provided protruding from the container body, and as the cap body is pushed into the container body, the cam protrusion is guided in the axial direction and finally wraps around in the circumferential direction, and the cam protrusion that has wrapped around does not return in the axial direction. A locking portion for holding the cam in this manner is formed near the end of the cam guide surface.

In order for the pushed-in cam protrusion to engage with the locking portion and maintain this engagement, the elastic force that constantly biases the container body and the cap body in the direction of separation is used. For this purpose, a coating shaft attached to the cap is provided so as to be slidable in the axial direction, and an elastic force in the pulling direction is constantly applied to the base of the coating shaft by a compression spring provided deep inside the cap. Due to the intervention of the spring, the connection between the cap body and the container body is not a rigid connection, but a flexible connection, so when trying to remove the cap from the container, all you have to do is give the cap body a slight twist. Then, the cam protrusion overcomes the engagement with the locking portion and becomes free, so that it can be pulled out in the axial direction.
Thus, according to the present invention, there is provided a liquid cosmetic container that can be opened and closed in a one-touch manner without requiring any screw-driving operations as in conventional containers.

Embodiments Examples of the present invention will be described with reference to the drawings. FIG. 1 is an elevational view of a container body 1 according to a first embodiment of the one-touch opening/closing type cosmetic container of the present invention, and FIG. 2 is a sectional view taken along the line of FIG. 1. FIG. 3 is a sectional view showing the cap/application shaft 10 according to the present invention, which is shown in a closed state with respect to the container body 1 shown by the chain line.

In the container body 1, a cam cylinder 3 is partially exposed at the open end of a main body cylinder 2 whose bottom is closed, and the inner end of the cam cylinder 3 is hermetically fixed to the main body cylinder 2 via a packing 4. A squeeze rubber member 5 is held inside one end. The outer end surface 5a of the squeeze rubber member 5 is connected to the cam cylinder 3.
A truncated conical cylindrical embossed part 5b is formed in the more exposed interior of the embossed rubber member 5 for wiping away the cosmetics adhering to the applicator shaft (18 to be described later).

A cam guide surface 6 is formed on the exposed outer circumferential surface of the cam cylinder 3 by cutting the outer circumferential surface into a concave shape. The cam guide surface 6 is continuously formed as an axial guide surface and a circumferential guide surface from the introduction part 6a at the outer end of the cam cylinder to the rear terminal end 6b. The concavely cut portion forms a concave surface 6c. A locking portion 7 is formed in a convex shape from the recessed portion surface 6c at a position slightly back toward the outer end from the terminal end 6b of the cam guide surface 6. As can be seen from FIG. 1, the planar shape of the locking portion 7 is approximately heart-shaped, with round bulges formed on both sides of a central depression. In the embodiment shown in FIGS. 1 to 3, two sets of the cam guide surface 6 and the locking portion 7 are provided.

A cap and applicator shaft 10 to be attached to such a container body 1 is shown in FIG. Third
The container main body 1 shown by the chain line in the figure is in the same positional relationship as the container main body 1 shown in the sectional view of FIG.

The cap/application shaft section 10 consists of a cylindrical cap body 11, one end of which is closed with an end plug 12. A sliding groove 1 is provided on the periphery of the cap body from the part where the inner end of the end plug 12 ends to the opening side of the cap body.
3 is formed in the axial direction. A coating shaft base 14 having an outer circumferential rib 14a that engages with this sliding groove 13 is fitted into the cap body 11, and the coating shaft base 14 is connected to a large diameter portion 17 and a shaft portion 18 (described later) via an outer end surface 14b. It is connected to. A compression spring 15 is interposed between the end plug 12 and the coating shaft base 14, and always elastically biases the coating shaft base 14 toward the cap opening side.

A pair of cam protrusions 16 are formed on the inner periphery of the opening side of the cap body 11 in correspondence with the two sets of cam guide surface-locking portions. The cam protrusion 16 is guided by the cam guide surface 6 and engages with the locking portion 7. As shown in Fig. 3, the cap body 11 is connected to the container body 2.
When the cap is closed upward, the cam protrusion 16 engages with the recess of the locking portion 7 as shown by the broken line in FIG. There will be a gap between them. In order to hide this gap, a decorative ring 21 as shown in FIG. 4, which will be described later, may be provided on the container body.

The coating shaft base 14 has an outer end surface 14b as described above.
It continues from the thick diameter part 17 which is the root part of the application shaft.
The outer diameter of the large diameter portion 17 is dimensioned to leave a slight gap between it and the inner diameter of the cylindrical portion of the squeezing rubber member 5, and the inner end of the large diameter portion forms a tapered portion through a protrusion that slides into contact with the inner periphery of the cylindrical portion. , the tapered portion is connected to a shaft portion 18 of uniformly small diameter. The tapered portion is
When the cap is closed on the container main body, the shape is such that it comes into close contact with the squeezing portion 5b of the squeezing rubber member 5, so that when the cap is closed, the cosmetic remaining on the inner periphery of the cylindrical portion of the squeezing rubber member 5 is scraped off by the projections. The tapered part presses against the squeezing part 5b, and it is pushed back deeper than the squeezing part 5b through the central opening, helping to keep the application shaft clean.

If the applicator shaft base 17 comes into close contact with the inner periphery of the mouth of the container body in this way, the pressure inside the container body will increase, causing the so-called pump-up phenomenon, which will cause the cosmetics to squirt out and leak. In order to release the internal air pressure, the shaft part 18 of the application shaft
A curved portion 19 is provided. The curved portion 19 is formed at a distance from the base outer end surface 14b that is greater than the distance between the outer end surface 5a of the squeezing rubber member and the squeezing portion 5b. When the curved section 19 passes through the squeeze section 5b, the central opening of the squeeze section 5b is expanded unevenly, creating a gap between the application shaft and the squeeze section, through which air escapes and prevents pump-up. It is. An applicator 20 such as a brush is provided at the inner end of the shaft portion 18 as usual.

To explain the operation, when the cap body 11 is separated from the container body 1, the application shaft base 14 is pressed by the spring 15 and the outer circumferential rib 14a
has come into contact with the outer end (right end in FIG. 3) of the sliding groove 13. In this state, in order to apply the cap body 11 to the container body 1, the applicator shafts 20, 18 are inserted into the squeeze rubber member 5 at the mouth of the container, and then the cap body 11 is simply pushed onto the cam cylinder 3 so as to cover it. As it goes, the cam protrusion 16 on the inner periphery of the cap body 11 is guided by the cam guide surface 6 of the cam cylinder 3 and reaches the terminal end 6b. At this time, the cam protrusion 16 is guided first in the axial direction and finally in the inner circumferential direction, so even if the cap body 11 is simply pushed in the axial direction, the cap body finally rotates slightly and the cam protrusion 16 comes to a position facing the locking portion 7 on the cam cylinder 3. The cam protrusion 16 is located at the terminal end 6 of the cam guide surface 6.
Before reaching b, the outer end surface 14b of the application shaft base 14 comes into contact with the outer end surface 5a of the squeezing rubber member 5, and the base 14 is pushed deep into the cap body 11. When the cam projection 16 hits the terminal end 6b of the cam guide surface 6, when the pushing force is removed, the spring 15 tries to restore its elasticity and returns the cap body 11, and therefore the cam projection 16, in the direction away from the container body 1. . In this way, the cap body 11 is attached to the container body 1 by a one-touch pushing operation, and the container is sealed.

When trying to remove the cap, press the cap body 11.
Just twist it slightly. This twist is just enough for the cam protrusion 16 shown by the broken line in FIG. There is no need to use a large screwdriver. When the protrusion 16 comes off the locking part 7, the biasing force of the spring 15 causes the cap body 11 to be separated from the container body 1 in the axial direction. Therefore, if the cap body 11 is simply pulled out in a straight line, it is removed from the container body 1. The coating shaft can be pulled out.

In the above embodiment, two sets of the cam guide surface 6 and the locking part 7 were provided, and thus two cam projections 16 were provided, but in the modified example shown in FIGS. 4 and 5, Three sets of these are provided. That is, the container body cylinder 2
The cam cylinder 23 protruding from the open end thereof has three cam guide surfaces 26 formed on its outer periphery at approximately equal intervals on the circumference. This guide surface is also formed by carving a concave shape on the outer periphery of the cam cylinder (26c is the concave surface), and a locking portion 27 is formed as a convex portion continuous from the terminal end 26b of each cam guide surface 26. .
Unlike the example of FIGS. 1-3, the passage to the catch 27 is only unidirectional, and therefore the only direction in which the cap body turns slightly in the final step of pushing the cap onto the container is clockwise. Similarly, the first twist when removing the cap is only to the left. Corresponding to the three sets of cam guide surfaces and locking portions 26 and 27 on the container body side in the embodiment shown in FIGS. Three cam protrusions are formed at approximately equal intervals on the inner circumference of the opening (not shown). Three sets of cam guide surfaces - locking parts -
By providing the cam projection, the cap can be attached and removed more easily and quickly. Based on the same principle, it is possible to provide a larger number (4, 5, etc.) of cam projections and cam guide surfaces spaced apart on the circumference.
The larger the number, the smaller the amount of rotation in the circumferential direction at the final stage of pushing in the cap, but in practice it is recognized that three sets of cam protrusions and guide surfaces are sufficient.

Effects of the invention As explained above, according to the invention, a cam guide surface and a locking part are provided at the mouth of the container body, and the cam guide surface allows the mouth of the cap body to move slightly in the axial direction. Since a cam protrusion guided in the circumferential direction is provided, the cap can be placed over the container and closed by simply pushing the cap body into the container body, and when trying to remove the cap, The cap can be pulled out in a straight line with just a slight twist, which has the effect of fundamentally simplifying and speeding up the opening and closing operations of the cosmetic container. Despite this simple and quick opening/closing operation, the cosmetic container of the present invention has the openings of the cap and the container body sealed together under pressure using elastic force, which prevents problems such as leakage of liquid cosmetics. There is no. Furthermore, despite the pressure-sealed structure, the coating shaft is provided with a curved portion for air venting, which has the effect of effectively eliminating phenomena such as pump-up.

[Brief explanation of the drawing]

Fig. 1 is an elevational view of the container main body which is the first embodiment of the one-touch opening/closing type cosmetic container according to the present invention, Fig. 2 is a sectional view taken along the line - Fig. 1, and Fig. 3 is indicated by a chain line. FIG. 4 is a sectional view of the cap body according to the present invention shown in a closed state with respect to the container body; FIG. 4 is a partially cutaway elevation view of the container body showing a second embodiment of the cam guide surface according to the present invention; FIG. The figure is a developed view of the cam guide surface of FIG. 4. Main code: 1...Container body, 2...Body tube,
3, 23...Cam cylinder, 5, 25...Ringing rubber member, 5a...Outer end surface, 5b...Ringing part, 6, 2
6...Cam protrusion, 6b, 26b...Terminal part, 7,
27b...Locking part, 10...Cap/application shaft part, 11...Cap body, 13...Sliding groove, 1
4... Application shaft base, 14a... Outer peripheral rib, 14b
... Outer end surface, 15 ... Spring, 16 ... Cam protrusion, 17 ... Thick diameter portion, 19 ... Curved portion.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cam cylinder is fixed to the open end of the main body cylinder of a container body containing cosmetics, with a part thereof exposed, and a cam cylinder is fixed on the exposed outer surface of the cam cylinder in the axial direction and circumferential direction. A cam guide surface constituting a guide path is formed, and a locking portion is formed at a position slightly back toward the outer end of the cam cylinder from the terminal end of the cam guide surface, and a cam protrusion to be guided by the cam guide surface is formed. A coating shaft base is provided deep inside a cap body which is formed on the inner periphery of the opening side, and is capable of sliding in the axial direction and is pressed toward the opening side, and when the cap body is attached to the container body, the cam protrusion A one-touch opening/closing cosmetic container characterized by being locked to a locking part of a cam cylinder so that a cap body and a container body are brought into pressure contact. 2. The one-touch opening/closing type cosmetic container according to claim 1, wherein the outer end of the squeeze rubber member held and projected within the cam cylinder and the outer end surface of the application shaft base are brought into pressure contact. 3 The set of the cam guide surface and the locking part is placed on the cam cylinder.
3. The one-touch opening/closing cosmetic container according to claim 2, wherein two of the cam projections are provided on the cap body. 4 The set of the cam guide surface and the locking part is placed on the cam cylinder.
3. The one-touch opening/closing cosmetic container according to claim 2, wherein three cam projections are provided on the cap body. 5. The one-touch opening/closing type cosmetic container according to claim 1, characterized in that a root portion following the application shaft base is a large diameter portion, and a curved portion is provided following the root portion.