JP4614680B2 - Cosmetic container - Google Patents

Description

  The present invention relates to a cosmetic container having a structure in which a container main body and a lid are hinged, and suitable for putting cosmetics such as a foundation, eye shadow, hand cream, hair gel, etc. The hinge connecting the lid and the lid is devised to improve the durability of the part and to effectively avoid the squeaking noise and abrasion powder that tend to occur when the lid is opened and closed.

  Cosmetic containers typified by a compact have a relatively simple structure in which a container body having a storage space for storing contents and a lid body hinged on the container body are combined. For hinges, it was common to use hinges to form the hinge.

  By the way, the conventional cosmetic container of this type is composed of a relatively hard resin such as AS or ABS resin, so that the lid can be opened and closed arbitrarily by sliding on the hinge part. When a free-stop function is provided to stop at the position, a squeaking noise is generated from the hinge part when the lid is opened and closed, and there is a problem that the resin is scraped off at that part and wear powder is generated. When the degree of progress is large, there is a concern that the free stop function will not work and the usability will deteriorate.

  As a cosmetic container to cope with such a conventional problem, a through hole is provided on each side of the container main body and the lid, and a resin pivot shaft (hinge pin) is inserted and fitted into the through hole. The structure of tightening is known (for example, refer patent document 1).

JP 11-285411 A

  The cosmetic container according to the above prior art is capable of adjusting the degree of fitting in the through hole by tightening the pivot shaft, and according to this, compared with the cosmetic container having a simple hinge. In this case, there is an advantage that a free stop function can be provided for a long period of time, and since the contact area of the pivot shaft becomes large at the fitting portion, the frictional force at the fitting portion is excessive when the lid is opened and closed. This could adversely affect the durability of the pivot shaft.

  Furthermore, as a material constituting the pivot shaft, olefin-based resins (PE, PP, etc.) are used. However, when such a resin is applied, there is a drawback that the strength is insufficient with respect to torsional deformation. Moreover, when PET resin was used instead of olefin resin to compensate for the lack of strength, it was still in a situation where it was unavoidable.

  An object of the present invention is to provide a novel cosmetic container that can improve the durability of the hinge part connecting the container main body and the lid, and can avoid the generation of squeaking noise and wear powder that has occurred with the opening and closing of the lid. Proposed.

The present invention provides a container main body having a cosmetic storage space, a lid for sealing the storage space together with the container main body, and a pivot shaft connecting the container main body and the lid to hold the lid openable and closable. A cosmetic container comprising:
A portion of the outer surface of the pivot shaft consists of a different resin from the resin constituting the contact other site, forms the coating layer comprising the other sections flush (hard Chi) of the outer surface of the pivot shaft ,
The coating layer is a cosmetic container characterized in that it is a resin selected from polyoxymethylene, polybutylene terephthalate, and nylon .

  In the cosmetic container configured as described above, it is preferable that the pivot shaft has a free-stop function for stopping the lid at an arbitrary opening / closing position.

  Forming a coating layer of a resin different from the resin constituting the other contact portion on the sliding surface of the pivot shaft or the outer surface of the portion that contacts the pivot shaft is accompanied by a decrease in strength and function of the constituent member. Therefore, it is possible to prevent the generation of stagnation noise and avoid the generation of wear powder.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is an embodiment showing a cosmetic container according to the present invention in a compact example, and FIG. 2 is an enlarged cross-sectional view of a main part in a hinge part of the compact.

  Reference numeral 1 in the figure denotes a container body. This container main body 1 is shown as an example having a cosmetic storage space 1a, 1b and an applicator storage space 1c.

  Reference numeral 2 denotes a lid that fits the container body 1 and seals the storage spaces 1a to 1c. Reference numeral 3 denotes a pivot shaft that connects the container body 1 and the lid 2 and holds the lid 2 so that the lid 2 can be opened and closed.

  The pivot shaft 3 is shown as an example that is press-fitted into the container body 1 through the through hole 4 provided in the container body 1 and the through hole 2a of the lid body 2 and slides in the through hole 2a of the lid body 2. A coating layer 3a for reducing sliding resistance is provided on the sliding surface. The formation part of this coating layer 3a can be the whole or part of the outer surface of the pivot shaft 3, and it is sufficient that it is provided at least in the sliding part. Further, as shown in this embodiment, when it is provided only on a part of the outer surface of the pivot shaft 3, it can be formed flush with other portions of the outer surface of the pivot shaft 3. .

  Resins such as POM (polyoxymethylene), PBT (polybutylene terephthalate) or Ny (nylon) are excellent in mechanical properties, exhibit high strength against stress such as torsion, and have good sliding properties. By forming the resin as the coating layer 3a of the pivot shaft 3, it becomes possible to eliminate the occurrence of squeaking noise and wear powder while ensuring the strength and durability of the pivot shaft 3 itself. In addition, although it is preferable to use the said resin as the material which comprises the coating layer 3a, if it is resin which has an equivalent effect, it can select and use suitably, This invention is limited only to said resin. Never happen.

  In the above configuration, since the pivot shaft 3 provided with the coating layer 3a is press-fitted into the through holes 2a and 4, it is possible to maintain a free stop function for stopping the lid body 2 at an arbitrary opening / closing position for a long period of time. It becomes.

  3 and 4 show another embodiment of a cosmetic container (compact) according to the present invention. In this example, the pivot shaft 3 is formed integrally with the container body 1 and a coating layer 3a made of POM resin is formed on the outer surface of the pivot shaft 3 so that the pivot shaft 3 can be forcibly inserted into the split groove 2b of the lid 2 so as to be opened and closed. It has a connected structure.

  Even in the compact having such a configuration, it is possible to effectively avoid the generation of stagnation noise and wear powder without causing a decrease in the strength of the pivot shaft 3.

  In the examples shown in FIGS. 1 to 4, the case where the coating layer 3a is provided on the sliding surface of the pivot shaft 3 is shown. However, the coating layer 3a is formed on the outer surface of the portion where the pivot shaft 3 contacts. It can also be provided.

  An example is shown in FIG. When the pivot shaft 3 is provided on the container body 1, the coating layer 5 can be provided on the surface of the fitting portion of the lid body 2 that is slidably connected to the pivot shaft 3, and such a structure is adopted. It is also possible to avoid the generation of stagnation noise and wear powder.

  The covering layers 3a and 5 can be formed by insert molding in the manufacturing process of the pivot shaft 3, the container main body 1 and the lid body 2, but those formed in advance may be joined by an adhesive or welding. This point is not limited.

  The container body 1 and the lid body 2 (including the pivot shaft 3 when the pivot shaft 3 is integrally formed with the container body 1 or the lid body 2) are made of AS or ABS resin as in the conventional case. Composed.

  The cosmetic container in the present invention is not limited to the compact shown in the above embodiment, but may be a jar type cosmetic container in which a container body and a lid are hinged, and the form thereof can be selected as appropriate. . Although not shown, the position where the lid 2 is joined to the container body 1 can be set such that the hinge portion of the lid 2 covers a part of the outer surface of the container body 1.

  It is possible to provide an easy-to-use resin compact that can maintain a free stop function for a long period of time without generating a squeaking noise or generating abrasion powder when the lid is opened and closed.

It is the figure which showed embodiment of the cosmetics container according to this invention. It is sectional drawing of the principal part of the cosmetics container shown in FIG. It is the figure which showed other embodiment of the cosmetics container according to this invention. It is sectional drawing of the principal part of the cosmetics container shown in FIG. It is a diagram illustrating a cosmetic container as a reference example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 1a Storage space 1b Storage space 1c Storage space 2 Lid 2a Through-hole 2b Split groove 3 Pivoting shaft 3a Covering layer 4 Through-hole 5 Covering layer

Claims (2)

Cosmetics comprising a container main body having a cosmetic storage space, a lid for sealing the storage space together with the container main body, and a pivot shaft connecting the container main body and the lid and holding the lid openable and closable A container,
Wherein a portion of the outer surface of the pivot shaft, the contact consists resin different from the other sites constituting the resin, it forms the other part and a coating layer comprising a flush outer surface of the pivot shaft,
The cosmetic container , wherein the coating layer is a resin selected from polyoxymethylene, polybutylene terephthalate, and nylon .   The cosmetic container according to claim 1, wherein the pivot shaft has a free stop function of stopping the lid at an arbitrary opening / closing position.

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