Lipstick mechanism for lips

Abstract

The present invention relates to a lipstick mechanism (1), comprising a first tubular body (2) and a second tubular body, the second tubular body (3) being rotatably mounted on the first tubular body, the first tubular body (2) having at least one first guide (2A), the second tubular body having at least one second guide (3A), a cursor (5) being accommodated in the first guide (2A) and the second guide (3A), the cursor being equipped with at least one first pin (5A) so that a mutual rotation of the first tubular body (2) relative to the second tubular body (3) causes an axial translation of the cursor (5), and a closure member (6) being equipped with a tubular protrusion (9) configured to couple with a first free edge (11) of the first tubular body (2) when the closure member (6) is mounted on the lipstick mechanism (1).

Description

Technical Field

[0001] The present invention relates to a lipstick mechanism for lips.

[0002] In particular, the present invention relates to machines for lipstick, lip gloss, cocoa butter and the like. Background Art

[0003] With the advent of e-commerce, packaging of various products, including cosmetics, has become increasingly important.

[0004] In the particular case of lipsticks or lip sticks sold in dedicated facilities that constitute the packaging, transportation to the end user has been found to be a significant source of injury.

[0005] In fact, although great care has been taken in the packaging of the mechanism, the package is always subject to shocks or sudden accelerations or decelerations during the movement of the package itself.

[0006] It has been found that conventional mechanisms, such as that disclosed in patent US 6,035,866, do not adequately protect the lipstick in the presence of a significant impact.

[0007] When undergoing shipping tests, such as one called the Amazon test, the cursor can shift, pushing the lipstick toward the cap, damaging the end.

[0008] This is unacceptable, especially when the products being dispatched are expensive and of high quality and therefore involve a very demanding customer base. Summary of the Invention

[0009] It is an object of the present invention to provide a lipstick mechanism for lips that overcomes the disadvantages of the prior art.

[0010] Another object of the present invention is to provide a mechanism that can withstand large impacts and properly protect the lipstick without damaging it.

[0011] This and other objects are achieved by a lipstick mechanism for lips designed according to the technical teachings of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features and advantages of the invention will become apparent from the following description of a preferred but non-exhaustive form of the device, illustrated by way of non-limiting example in the accompanying drawings, in which:

[0013] Figure 1 is an exploded perspective view of various parts of the mechanism of the present invention;

[0014] Figure 2 yes Figure 1A cross-sectional view of the mechanism when assembled, without the closure member;

[0015] Figure 3 yes Figure 1 a cross-sectional view of the mechanism with the closure member provided and the cursor member lowered;

[0016] Figure 4 yes Figure 3 an enlarged view of the circled portion; and

[0017] Figure 5 It is part of the mechanism with a fully raised cursor piece, with a lipstick associated with it. DETAILED DESCRIPTION

[0018] With reference to the cited drawings, there is shown a lipstick mechanism for lips, generally indicated by the reference numeral 1 .

[0019] The lip stick is preferably lipstick, cocoa butter, lip balm or the like.

[0020] The mechanism 1 (or container) comprises a first tubular body 2 on which a second tubular body 3 is rotatably mounted.

[0021] The first tubular body 2 has at least one first guide 2A (but preferably two identical and symmetrical guides 2A), and the second tubular body has at least one second guide 3A (but preferably two identical and symmetrical guides 3A).

[0022] The mechanism also comprises a cursor 5 equipped with at least one first pin 5A (but preferably also two here) housed both in the first guide 2A and in the second guide 3A.

[0023] In this way, the mutual rotation of the first tubular body 2 relative to the second tubular body 3 causes the cursor 5 to move axially in a completely conventional and known manner.

[0024] The first guide 2A may be substantially linear, while the second guide 3A may be substantially helical (see Figure 3 ),vice versa.

[0025] like Figure 2 As shown, the generally rectilinear guide 2A may include an L-shaped end portion 20 in which teeth 21 are formed that stabilize the pin 5A in the end-stroke position (eg, when the slider is fully retracted).

[0026] Furthermore, the opposite ends of the guide 2A may have the same configuration to stabilize the slider when it is positioned in the upper end-stroke position (ie, with the lipstick fully drawn out).

[0027] The mechanism also comprises a closure 6 provided with a tubular protrusion 9 , possibly discontinuous, configured to couple with a first free edge 11 of the first tubular body 2 when the closure 6 is assembled on the mechanism 1 .

[0028] The tubular protrusion 9 may be formed in one piece with the closure 6 .

[0029] According to the present invention, the second tubular body 3 has a first annular groove 13 opening on the second free edge 12 of the second tubular body 3 (see Figure 4 ).

[0030] The first groove 13 may have an L-shaped cross-section.

[0031] Advantageously, the ratio between the total thickness S2 of the wall of the second body 3 and the depth S1 of the groove may be between 2.5 and 1.5, preferably about 2.

[0032] For example, the depth S1 of the groove may be between 0.3 mm and 0.8 mm, preferably 0.5 mm, and the total thickness S2 of the wall of the second body 3 may be between 0.4 mm and 1.2 mm, preferably 0.9 mm.

[0033] In fact, the groove is a notch that makes the internal diameter of the cylindrical opening of the second tubular body 3 larger than the internal diameter of the rest of the tubular body.

[0034] On the other hand, the first tubular body 2 has a flange 14 protruding at the first free edge 11; the flange 14 is positioned inside the first annular groove 13 so as to load the lateral surface 15 of the annular groove 13 when the closure 6 is assembled on the mechanism and the first free edge 11 is coupled to the tubular protrusion 9 of the closure.

[0035] In this way, the tubular protrusion 9 can press the flange 14 against the inner surface 15 of the groove, thereby generating great friction between the first body 2 and the second body 3, which cannot rotate even in the event of a strong impact.

[0036] exist Figure 4 In the illustrated configuration, it is noted that the second body 3 can be pressed against the surface 6A of reduced diameter of the closure 6. The surface 6A can be continuous or discontinuous, for example by ribs. In addition, the surface 6A and / or the tubular protrusion can have tongues to facilitate insertion of the closure 6 into place.

[0037] In this solution, the ends of the first and second bodies 2, 3 are clamped between the tubular protrusion 8 and the reduced diameter surface 6A. This helps to further resist rotation of the two bodies when the closure 6 is in place.

[0038] This means that the surface 6A with reduced diameter is not necessary for the operation of the present invention, but is preferred. Therefore, the closure 6 can also have a simplified surface, such as the dotted line 60 (for simplicity, only in FIG. Figure 3 and 4 As shown in the right part of the figure, there is no surface with reduced diameter to cooperate with the free end of the second body 3.

[0039] In all cases, the impossibility of rotation between the first and second bodies practically stabilizes the slider 5 , which stays in the lowered position (lower end-stroke position), thus preventing possible impacts between the end of the lipstick and the closure 6 .

[0040] The presence of the flange 14 further precisely improves the dimensional stability of the first body 2 in the area where the first body is loaded along the periphery by the tubular protrusion 9, thereby preventing its excessive or discontinuous deformation, which would impair the visual appeal of the first and second bodies, especially when the tubular protrusion 9 is discontinuous (e.g. Figure 3 shown).

[0041] Advantageously, the surface 16 of the first body 2 facing the tubular protrusion 9 has a second groove 18 at said flange 14 and / or wherein the second groove has a C-shaped cross section.

[0042] It has been found that such a configuration increases the pressure detected at the contact area 15 between the outer periphery of the flange 14 and the surface of the second body 3 defining the groove 13 .

[0043] The contact area 15 between the groove and the rim has a height H1 which is advantageously between 1.5 mm and 6 mm, preferably 2.25 mm.

[0044] The present invention is particularly useful when the tubular protrusion 9 has a conical peripheral surface 9A (the taper α is preferably between 1° and 4°, more preferably 2°).

[0045] It has been noted that the presence of the flange 14 housed in the groove 13 (when loaded by the tubular projection 9) and of the tooth 21 cooperating with the pin 5A (or pins) of the slider 5 renders the slider completely stable when it is in the lower end-of-stroke position (i.e. with the lipstick fully retracted).

[0046] This enables the mechanism disclosed herein to easily overcome the so-called Amazon test, being able to withstand large shocks without the shock causing the slider 5 to move (and therefore without causing contact between the end of the lipstick and the closure 9).

[0047] To conclude the description of the invention, it is noted that the first body may be twisted integral with the handle 4 which removably cooperates with the closure 6 (eg by a snap connection, by magnets, etc.).

[0048] To make the mechanism more balanced and easier to use, a counterweight 7 can be integrated into the handle (4).

[0049] Various embodiments of the innovation have been disclosed, but other embodiments can be conceived utilizing the same innovative concepts.

Claims

1. A lipstick mechanism (1), comprising a first tubular body (2) and a second tubular body (3), the second tubular body (3) being rotatably mounted on the first tubular body, the first tubular body (2) having at least one first guide (2A), the second tubular body (3) having at least one second guide (3A), a cursor (5) being accommodated in the first guide (2A) and the second guide (3A), the cursor being provided with at least one first pin (5A) such that mutual rotation of the first tubular body (2) relative to the second tubular body (3) causes axial translation of the cursor (5), a closure member (6) being provided with a tubular protrusion (9), the tubular protrusion being configured to couple with a first free edge (11) of the first tubular body (2) when the closure member (6) is mounted on the lipstick mechanism (1), characterized in that The second tubular body (3) has a first annular groove (13) opening on the second free edge (12) of the second tubular body (3), the first tubular body (2) has a flange (14) at the first free edge (11), the flange (14) being located in the first annular groove (13) so as to load the lateral surface (15) of the annular groove (13) when the closure (6) is assembled on the lipstick mechanism, the surface (16) of the first tubular body (2) facing the tubular protrusion (9) has a second groove (18) corresponding to the flange (14), the second groove (18) having a C-shaped cross-section, the closure having a surface (6A) with a reduced diameter, which is configured to cooperate with the free end of the second tubular body (3) where the first annular groove (13) is located, so that when the closure (6) is in place, the flange (14) and the portion of the second tubular body (3) where the first annular groove (13) is located are sandwiched between the tubular protrusion (9) and the surface (6A) with a reduced diameter.

2. The lipstick mechanism according to claim 1, wherein the first guide (2A) is linear and the second guide (3A) is spiral, or the first guide (2A) is spiral and the second guide (3A) is linear.

3. The lipstick mechanism according to claim 2, wherein the linear guide (2A) comprises an L-shaped end section (20) in which there are teeth (21) which stabilize the pin (5A) when in the end-stroke position. 4 . The lipstick mechanism according to claim 1 , wherein a height ( H1 ) of a contact area between the first annular groove and the flange is between 1.5 mm and 6 mm. The lipstick mechanism according to claim 4 , wherein the height ( H1 ) is 2.25 mm.

6. The lipstick mechanism of claim 1, wherein the tubular protrusion (9) has a conical peripheral surface (9A) having a taper between 1° and 4°, and / or wherein the tubular protrusion (9) has a discontinuous surface.

7. The lipstick mechanism of claim 6, wherein the taper is 2°.

8. The lipstick mechanism according to claim 1, wherein the first annular groove (13) has an L-shaped cross-section.

9. The lipstick mechanism of claim 1, wherein the first tubular body is twistably coupled to a handle (4) that removably engages the closure (6).

10. The lipstick mechanism of claim 1, wherein a counterweight (7) is integrated into the handle (4).

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