FR2662587A1 - MECHANISM FOR LIPSTICK HOLDER. - Google Patents

Abstract

Mechanism (10) for a lipstick case or the like, comprising a sleeve (12), an internal part (14) and a cup (16) intended to contain one end of the stick of cosmetic product. This mechanism, which makes it possible to manufacture the sleeve (12) in plastic material and to provide it with a rounded outer edge, comprises a connection by recess and rib between the inner part (14) and the sleeve (12) which is located at proximity to the end of the sleeve opposite the rounded outer edge.

Description

Mechanism for lipstick case The present invention is

  relates to the field of lipstick boxes and similar devices These devices include a mechanism allowing the stick of a cosmetic product in a tubular box and the extraction of this

  stick of said housing by a screwing movement.

  This mechanism generally comprises a tubular casing element or sleeve provided on its internal face with spiral grooves, an internal tubular element or internal part provided with a vertical slot or preferably with two vertical slots opposite one another and which can rotate freely in the sleeve while, however, being integral with the latter in the axial direction, and a cup-shaped element which carries the stick of cosmetic product and which is provided with a projection or preferably with two lateral projections which penetrate the spiral grooves of the sleeve through the vertical slots of the inner tubular member When communicating a relative rotational movement to the sleeve and the inner tubular member, for example by holding the sleeve by hand and spinning part

  control of the internal tubular element, it causes the displacement-

  of the cup along the spiral grooves, and therefore longitudinally along the sleeve in one direction or the other,

depending on the direction of rotation.

  The connection allowing a reciprocal rotation of the sleeve and the internal tubular element or part while maintaining these integral elements in the axial direction is made possible by a peripheral rib on the upper or external edge of the internal tubular element and a recess or channel peripheral

  corresponding on the upper or internal edge of the sleeve.

  Previously, in mechanisms of this type, the sleeve was metallic and it was easy to round the edge of the sleeve from which protrudes the stick of cosmetic product, i.e. the outer or upper edge, for safety reasons so as not to scratch or cut the user's skin, and also to

improve the appearance of the whole.

  In the case of a plastic sleeve, it is very difficult to round the edge and form the connecting recess, since the slack of a sleeve having a recess and a rounded edge does not allow remove the sleeve from

  soft Unscrewing without excessively deforming the sleeve.

  Since a long time, we put on the market sleeves with rounded edges in Lesque Ls we form The recess of

  Connection after demoulding by additional machining on the lathe.

  However, this operation entails considerable additional costs and, moreover, the appearance of the sleeve is degraded due to

  that the groove lets in the light.

  The object of the present invention is to realize a mechanism

  Container-dispenser nism for cosmetic stick

  in Leque L The sleeve has a rounded outer edge, this mechanism

  nism being devoid of the drawbacks of the state of the art.

  This object is achieved by a mechanism in which the connection between the sleeve and the internal tubular element is

  Realized by means of a connection by recess and rib to the outside.

  lower half of the sleeve, i.e. the end opposite to

  The end o is The rounded edge.

  Thus, it is possible to manufacture the entire sleeve -

  ment by slackening Lage then by Le demou Ler by unscrewing in Him

with a perfect aesthetic appearance.

  Other advantages and characteristics of the invention

  will appear better in the following detailed description of a mode

  for carrying out the invention and which refers to the appended drawings, given only as a title, and in Lesque Ls: FIG. 1 is a sectional view of part L Le of the stick holder mechanism of cosmetic product according to Line 1-1 of Figure 2; Figure 2 is a top view in section part L Le of the same mechanism, along Line 2-2 of Figure 1; Figure 3 is an enlarged view of detail L surrounded by

a hoop Le in Figure 1.

  The figures show a mechanism for a lipstick holder or more generally a container-dispenser for a stick of cosmetic product 10 which comprises a sleeve 12, an element or part

  internal tubular 14 and a cup The lipstick holder 16.

  The sleeve 12 is of cylindrical tubular shape and

  has internal grooves 18 in spira Le which form a file-

  internal level mu Ltip Le, as well as a rounded upper or external edge 20 and a recess in the peripheral channel L 22 near

  The base or lower edge, and directed inward The hollow -

  ment is delimited at the bottom by a short length 23 of the wall of the sleeve, preferably appropriately reduced by chamfering (the upper and lower terms refer to the arrangement presented in the drawings and should not be

  considered in a limiting sense).

  The internal tubular element or part 14 comprises an upper tubular part 14 a which has one or two longitudinal through holes 26, and a lower control part 14 b, and it is provided with a peripheral rib or bulge 28 which projects towards the exterior and which is intended to penetrate

  in the recess 22 mentioned above.

  The cup 16 in the shape of a bell is housed in the part 14 and it has one or preferably two projections

  opposites 30 which, in the assembled mechanism, pass through the openings

  longitudinal tures 26 of the internal part to penetrate into the

spiral grooves 18 of the sleeve.

  It should be noted that the rib 28 could be formed on the sleeve 12 and that the recess 22 could be formed in

the internal tubular element 14.

  The three elements described are made of plastic.

  Thus, a relative movement of the element or internal part 14 and of the sleeve 12, communicated by actuating the part 14 b with one hand and holding the sleeve with the other hand, causes the movement towards the front or towards L back of the cup

  along the Longitudinal grooves and therefore Along the sleeve.

  According to the invention, the internal part 14 is connected to the sleeve 12 so as to be able to rotate freely while being integral with the latter in the axial direction thanks to the rib 28 located under the lower end of the openings 26, that is to say to say

  between the openings 26 and the control part 14 b.

  During Assemb Lage, the rib is brought into the hollow

  lie 22 by applying light pressure to make Him

cross the wall 23.

  Part 14 b can be fitted with a sai L Lie forming a stop

  shown in point LLé in Figure 3.

Claims (4)

  1 container-dispenser mechanism for a stick of cosmetic product, comprising a sleeve (12), an internal part (14) and a cup (16) intended to contain one end of the stick of cosmetic product, said sleeve being of tubular shape and comprising on its internal surface spiral grooves (18), said internal part (14) comprising a tubular part (14 a), provided with longitudinal through openings (26), which is received in the sleeve so as to be able to rotate freely while by being integral with the latter in the axial direction, and a control part (14b) which emerges from the sleeve, said cup being housed in the internal part (14) and comprising projections (30) which pass through said openings to penetrate into said spiral grooves, so that, during a relative rotation of the sleeve and of the internal part, the cup is caused to move along the sleeve in one direction or the other, characterized in that said sleeve (12) has a rounded upper or outer edge (20), the connection which allows free relative rotation of the sleeve (12) and   of the internal part (14) while maintaining these solid elements   daires in axial direction is achieved by a recess link-   rib (22, 28) in which one of the elements among the recess and the rib is formed on the sleeve near the opposite edge at the outer edge of it.   2 Mechanism according to claim 1, characterized in that the rib (28) is formed in the internal part (14) in a position located between the through openings (26) and the part control (14 b).   3 Mechanism according to claim 1, characterized in that the recess (22) is formed on the sleeve and is limited by a   side by a wall (23) of small axial thickness.   4 Mechanism according to claim 1, characterized in that   that the sleeve is made of plastic.