Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
  • A45D40/06—Casings wherein movement of the lipstick or like solid is a screwing movement

Definitions

• the present invention relates to a lipstick mechanism or the like, of the type comprising an internal tubular sheath intended to rotate in an external tubular sheath, the sheaths having two longitudinal slots and two helical slots making it possible to guide the nipples of a bucket in translation grape holder disposed in the internal tubular sheath, the internal sheath comprising elastic braking reliefs intended to bear elastically on a cylindrical bearing surface linked to the external sheath, in order to provide a smooth and regular rotational movement between the two sheaths.
• a lipstick mechanism or the like of the type comprising an internal tubular sheath intended to rotate in an external tubular sheath, the sheaths having two longitudinal slots and two helical slots making it possible to guide the nipples of a bucket in translation grape holder disposed in the internal tubular sheath, the internal sheath comprising elastic braking reliefs intended to bear elastically on a cylindrical bearing surface linked to the external sheath, in order to provide a smooth and regular
• the invention achieves its object thanks to a lipstick mechanism or the like, of the type comprising an internal tubular sheath intended to rotate in an external tubular sheath, the sheaths having two longitudinal slots and two helical slots making it possible to guide the nipples in translation a grape-holder bucket disposed in the internal tubular sheath, the internal sheath comprising a cylindrical base in the wall of which elastic braking reliefs are formed intended to bear elastically on a cylindrical bearing surface linked to the external sheath reliefs being constituted by pads arranged on a part of thinned wall of the wall of the cylindrical base, characterized in that the thinned wall completely surrounds each pad peripherally.
• This thinned wall advantageously constitutes a thin veil (of the order of 0.1 to 0.2 mm in its thinnest part) on which "floats" the shoe part which, on the contrary, has a slight molding extra thickness compared to the wall of the cylindrical base.
• buttons or pads formed on the thin veil of the thinned wall constitute in a way a floating platform and can deform more homogeneously in all the directions that with a cut tongue which constrains to preferential degrees of freedom, so that one obtains a very soft and regular braking, even with the necessary imperfections of the cylindrical wall of the external sheath on which they rest.
• the sheath injection molding operation generally provides for injection from the bottom so that producing a fine veil at the base does not pose any major technical problem.
• the arrangement of the pads according to the invention makes it possible to have a relatively large pad surface which is entirely supported on the cooperating surface; this large surface makes it possible to provide only a small excess thickness of the pads, of a few hundredths of a millimeter, sufficient to exert the desired braking force taking into account the surface and the number of pads. This small extra thickness avoids excessive permanent deformation of the thin web and therefore prevents creep; braking according to the invention therefore has great stability over time.
• the sheath of the invention can be manufactured from all the plastics traditionally used for this type of injection, depending on the quality and cost price desired: inexpensive materials such as polypropylene can be used despite their tendency to creep, taking into account what has just been said on limiting creep according to the invention; naturally, it is also possible to use more noble materials such as a polyacetal resin (POM).
• inexpensive materials such as polypropylene can be used despite their tendency to creep, taking into account what has just been said on limiting creep according to the invention; naturally, it is also possible to use more noble materials such as a polyacetal resin (POM).
• POM polyacetal resin
• FIG. 1 is a side view of an internal sheath of lipstick mechanism according to the invention.
• - Figure 2 is a longitudinal sectional view of the same sheath.
• - Figure 3 is a cross-section III-III of the sheath of Figure 2.
• FIG. 4 is an enlarged detail of a skate in section IV-IV of Figure 3.
• - Figure 5 is an exploded view of the various elements constituting a mechanism integrating the sheath of Figure 1.
• a lipstick mechanism conventionally comprises (FIG. 5) an internal sheath 1 made of plastic receiving the grape-carrying bucket 2.
• the external sheath 3, also made of plastic, is threaded on the whole, itself coated with a decorative sheath 4 generally made of metal or metallized plastic.
• the internal sheath 1 comprises two longitudinal slots 10 and 11, while the external sheath 3 comprises two helical slots 5 (which may be only simple grooves on its inner cylindrical face) defining with the longitudinal slots 10, 11 an area of crossing where the nipples 6 of bucket 2 engage, the height of this zone (and therefore the position of bucket 2) depending on the relative rotation of the sheaths 1 and 3.
• the sheath 3 has at its base a cylindrical zone 7 whose internal diameter may be different from that of the rest of the sheath and which is intended to come in front of the base 12 of the internal sheath 1 so as to cooperate with the pads of friction which will now be described, in conjunction with FIGS. 1 to 4.
• the sheath 1 has three zones, respectively from top to bottom, the main zone 13 on which the slots 10, 11 are formed; then the base annular zone 12 on which the brake pads are formed; finally the base 14.
• the main zone 13 ends at the top with an upper rim 15 for blocking the sheath 4 and at the bottom with an abutment collar 16 cooperating with an internal shoulder of the sheath 4.
• One, 11, of the openings 10, 11 is open upward to allow easy insertion of the nipples 6 of the bucket 2.
• the slots 10, 11 have high end profiles 17 and low 18 deflected so as to provide blocking at the end of the bucket stroke.
• the area 13 may include a very slight annular projection 30, or a rounded shape, of a few hundredths of a millimeter, intended for centering the outer sheath 3.
• the base 14 has longitudinal grooves or flutes 19 on its outer cylindrical surface as well as a central chimney 20, allowing attachment without rotation to a decorative base part.
• the basic annular zone 12 comprises a cylindrical wall 21 (the internal face of which is in continuity with the internal face of the zone
• the shoe 22 is a button of constant thickness (therefore constituted by a cylindrical sector) which has an extra thickness "e" relative to the normal thickness of the wall 21, this extra thickness being of the order of a few hundredths of a millimeter (for example 3/100 e mm), sufficient to allow the internal wall of zone 7 of the external sheath 3 to be pressed. Such an extra thickness, very small, does not pose any problem of molding or demolding after injection. .
• the thickness of the web 23, in its minimum part, is 0.1 to 0.2 millimeters while the thickness of the wall 21 is of the order of 0.8 to 1 millimeter.
• the pads 22 are arranged in two opposite pairs, each pair being centered on a longitudinal slot 10 or 11 and deviating by 25 ° from either side of this central position.
• the pads 22 advantageously have (seen from the front) a round or oval shape, with a dimension of small vertical axis of approximately 0.5 mm which makes it possible to offer a satisfactory total surface of pads.
• each skate 22 is surrounded by its own thin veil 23, is particularly satisfactory, it is also possible to provide the two skates of a pair floating on a single common thin veil disposed between the skates and around d 'them.

Landscapes

• Cosmetics (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8862769

Family Applications (1)

Country Status (10)

Families Citing this family (13)

Family Cites Families (9)

• 2001
  • 2001-04-27 FR FR0105698A patent/FR2823957B1/fr not_active Expired - Lifetime
• 2002
  • 2002-04-10 BR BR0209174-7A patent/BR0209174A/pt active IP Right Grant
  • 2002-04-10 US US10/473,659 patent/US7112002B2/en not_active Expired - Lifetime
  • 2002-04-10 CN CN02808308.3A patent/CN1271962C/zh not_active Expired - Lifetime
  • 2002-04-10 CA CA002444444A patent/CA2444444A1/en not_active Abandoned
  • 2002-04-10 JP JP2002584748A patent/JP2004520917A/ja active Pending
  • 2002-04-10 EP EP02732798.0A patent/EP1383406B1/de not_active Expired - Lifetime
  • 2002-04-10 WO PCT/FR2002/001255 patent/WO2002087385A1/fr active Application Filing
  • 2002-04-10 BR BRPI0209174-7A patent/BRPI0209174B1/pt unknown
  • 2002-04-10 ES ES02732798.0T patent/ES2618518T3/es not_active Expired - Lifetime
  • 2002-04-10 MX MXPA03008668A patent/MXPA03008668A/es active IP Right Grant

Non-Patent Citations (1)

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