Means for locking a cosmetic case

Abstract

A rotating cosmetic case including an outer metal jacket (1) fitted and mechanically retained to a sheath of synthetic material, at the same time by at least one rotational lock and at least one tensile lock. A rotational lock may include a cut-out (5) opening outwards at the lower end of the cylindrical wall of the metal jacket (1), this cut-out (5) being mounted in conjunction with a molded projection in the sheath, while the tensile lock may include at least one aperture (7) in the lower part of the cylindrical wall of the metal sheath (1) defining, with the lower end of the sheath (1), a wall portion (8) directed inwards with respect to a housing located in the sheath.

Claims

1. A rotating cosmetic case comprising an outer metal jacket (1), mechanically retained on a sheath (2) of synthetic material by at least one rotational means of locking (3) and at least one tensile means of locking (4), said rotational means of locking (3) comprising a cut-out (5) opening outwards at a lower end of a cylindrical wall of the metal jacket (1), said cut-out (5) being mounted in cooperation with a molded projection (6) formed in the sheath (2), while the tensile means of locking (4) comprises a wall portion (8) defined between the lower end of the metal jacket (1) and an orifice (7) defined in the metal jacket (1), said wall portion (8) engaging a housing (9) located in the sheath (2).

2. The rotating cosmetic case according to claim 1, wherein the cut-out (5) is trapezoidal.

3. The rotating cosmetic case according to claim 1, wherein a transverse face of the cut-out (5) arranged radially with respect to the cylindrical wall of the metal jacket, abuts a face also arranged radially from the molded projection (6) of the sheath (2).

4. The rotating cosmetic case according to claim 1, wherein the wall portion (8) faces inwards and has at least one recess (10).

5. The rotating cosmetic case according to claim 4, wherein the at least one recess (10) has a projecting profile.

6. The rotating cosmetic case according to claim 1, wherein an upper end of the wall portion (8) directed towards the inside of the metal jacket (1) is in contact with the upper end of the housing (9) of the sheath (2).

7. The rotating cosmetic case according to claim 1, wherein the lower end of the wall portion (8) of the metal jacket (1) directed inwards, coincides with a lower end of the housing (9) of the sheath (2).

8. The rotating cosmetic case according to claim 1, wherein a height of the wall portion (8) is less than a height of the housing (9).

9. The rotating cosmetic case according to claim 1, wherein said rotating cosmetic case comprises two of said means of tensile locking (4) which are located diametrically opposite with respect to each other.

10. The rotating cosmetic case according to claim 1, wherein the sheath (2) is a spiral envelope, which comprises at least one helical groove corresponding to a first zone, which will be described as a negative zone, and a second zone that will be described as a positive zone, corresponding to the zone arranged between two portions of helical groove, while the housing (9) is located in correspondence with the positive zone.

11. The rotating cosmetic case according to claim 2, wherein a transverse face of the cut-out (5) arranged radially with respect to the cylindrical wall of the metal jacket, abuts a face also arranged radially from the molded projection (6) of the sheath (2).

12. The rotating cosmetic case according to claim 1, wherein the wall portion (8) curves inwardly and has at least one recess (10).

13. The rotating cosmetic case according to claim 12, wherein the at least one recess (10) has a projecting profile.

14. The rotating cosmetic case according to claim 2, wherein an upper end of the wall portion (8) directed towards the inside of the metal jacket (1) is in contact with the upper end of the housing (9) of the sheath (2).

15. The rotating cosmetic case according to claim 3, wherein an upper end of the wall portion (8) directed towards the inside of the metal jacket (1) is in contact with the upper end of the housing (9) of the sheath (2).

16. The rotating cosmetic case according to claim 4, wherein an upper end of the wall portion (8) directed towards the inside of the metal jacket (1) is in contact with the upper end of the housing (9) of the sheath (2).

17. The rotating cosmetic case according to claim 5, wherein an upper end of the wall portion (8) directed towards the inside of the metal jacket (1) is in contact with the upper end of the housing (9) of the sheath (2).

18. The rotating cosmetic case according to claim 7, wherein the lower end of the wall portion (8) of the metal jacket (1) directed inwards, coincides with a lower end of the housing (9) of the sheath (2).

19. A rotating cosmetic case comprising: an outer metal jacket (1) mechanically retained on a sheath (2) of synthetic material by both a rotational lock (3) and a tensile lock (4); said rotational lock (3) comprising a cut-out (5) that opens outwardly through a lower end of a cylindrical wall of the metal jacket (1), said cut-out (5) being mounted in cooperation with a molded projection (6) formed in the sheath (2) such that said molded projection (6) is located in said cut-out (5); said tensile lock (4) comprising: (i) an orifice (7) defined in the lower end of the metal jacket (1); and (ii) a wall portion (8) of the metal jacket (1) defined between the orifice (7) and the lower end of the metal jacket (1); said wall portion (8) of said tensile lock (4) curved inwardly such that it defines a recess (10) and such that said wall portion (8) is received in and engaged with a housing (9) located in the sheath (2).

20. The rotating cosmetic case as set forth in claim 19, wherein said inwardly curved wall portion (8) of said tensile lock (4) comprises an upper face that is engaged with an upper face of the housing (9) located in the sheath (2).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIGS. 1a to 3b are views of a cosmetic case and its constituent elements, according to one embodiment.

(2) FIGS. 1a and 1b are front views of a mechanism rotating from two angular positions.

(3) FIGS. 2a and 2b are front views of a metal jacket from two angular positions.

(4) FIG. 2c is a magnification view of FIG. 2a.

(5) FIG. 3 is a perspective view of a metal jacket.

(6) FIGS. 4a and 4b are front views of a spiral envelope according to two angular positions.

DETAILED DESCRIPTION

(7) Thus, a cosmetic case according to the invention comprises at least one rotational means of locking (3), independent of at least one tensile means of locking (4) of a metal jacket (1) and a sheath (2) of synthetic material.

(8) The separation of these two means of locking (3, 4) makes it possible to optimize their effects by optimizing each of the means separately.

(9) According to the embodiment illustrated, the cosmetic case comprises a rotational means of locking (3) and two tensile means of locking (4), arranged diametrically opposite to optimize the distribution of forces involved during

(10) We shall add that the means of locking in rotation (3) and in translation (4) according to the invention, are provided by means of locking by shape cooperation located both on the metal jacket (1) and on the sheath (2) of synthetic material.

(11) The rotational means of locking (3) centers around the cooperation of at least two abutment faces arranged radially or substantially radially with respect to the concentric elements on which they are carried, while the tensile means of locking (4) is introduced by the contact of at least two faces also abutting, but arranged parallel or substantially parallel to the bottom of the cosmetic case, that is to say perpendicular to the axis of rotation of the rotating mechanism.

(12) According to the illustrated embodiment, the rotational means of locking (3) consists of the collaboration of a cut-out (5) made at the lower end of the cylindrical wall of the metal jacket (1), with a molded projection (6) in the sheath (2), such that at least one respective side face of the cut-out (5) and the molded projection (6) abut one against the other, while each of the lateral faces is oriented so that their respective planes are oriented radially or substantially radially, namely making an acute angle with the general axis of rotation of the mechanism.

(13) It is to be noted that the general profile of a molded projection (6) is intended not to exceed the outer profile of the metal jacket (1), namely the outer profile of the molded projection (6) matches that of the metal jacket (1).

(14) Preferably, the abutment faces of the cut-out (5) and the molded projection (6) are at an angle to the general axis of rotation of the mechanism, between 1 and 45, preferably between 1 and 20, more preferably 5, as illustrated.

(15) This orientation of the facesone against the otherallows a facilitated insertion of the cut-out (5) at the periphery of the molded projection (6), during the fitting of the metal jacket (1) on the sheath (2) of synthetic material.

(16) According to one feature, the cut-out (5) is trapezoidal.

(17) According to the preceding feature, the lower ends of the trapezoidal cut-out (5) are tapered, that is, rounded.

(18) Note that the molded projection (6) has a shape corresponding to that of the cut-out (5), namely that if the cut-out (5) is trapezoidal, the molded projection (6) is also, so that their respective lateral faces come into contact and in abutment, blocking all rotational ranges.

(19) The collaboration of the cut-out (5) and the molded projection (6) makes it possible to form a rotational means of locking (3) in both directions of rotation of the turning mechanism, in particular during end-of-stroke stresses during both the ascent of the descent of the stick of cosmetic.

(20) Recall that the rotating cosmetic case also comprises at least one translation locking (4) means.

(21) According to the illustrated embodiment, translational means of locking (4) is provided by a wall portion (8) located at the lower end of the metal jacket (1), which is curved inwards and comes embedding in a suitable housing (9) arranged in the sheath (2) made of synthetic material.

(22) The wall portion (8) is formed by an orifice (7) located substantially at the lower end of the metal jacket (1). The wall portion (8) is therefore delimited by at least the lower end of the orifice (7) and the lower end of the metal jacket (1). The shape of this wall portion (8) is preferably longitudinal and thin, as it is intended to be flexible to allow its torsion inwards without damaging the overall profile of the metal jacket (1).

(23) According to the illustrated embodiment, an orifice (7) having an oblong shape, so that the wall portion (8) provides a rectilinear part, but it could be otherwisean orifice (7) in a parallelepiped shape.

(24) Note that the wall portion (8) has at least one recess (10), preferably at least two recesses (10), whose profile(s) is/are advantageously projecting.

(25) It should be noted that the upper face(s) of the wall portion (8) are in contact, or even placed under stress against the upper face of the housing (9), when the metal sleeve (1) is fitted together around the sheath (2).

(26) According to a complementary feature, the height of a wall portion (6) is less than the height of a housing (9), in order to limit the force to be applied to create a recess (10), without altering the cylindrical profile of the outer jacket.

(27) According to the illustrated embodiment, the sheath (2) of synthetic material is a spiral envelope, which comprises at least one helical groove corresponding to a first zone, which will be described as a negative zone, and a second zone which will be described as a positive zone, corresponding to the zone arranged between two portions of helical groove, while at least one housing (9) is located in correspondence with at least one positive zone.