US 20050194384 A1
A case, includes a lid fitted with a first hinge portion, a concave bottom possibly including an inner frame intended to receive a trough containing the cosmetic product, the bottom or inner frame being fitted with a second hinge portion, the first and second hinge portions engaging to form a hinge, elements for closing the lid relative to the bottom or inner frame wherein:
1. Packaging intended for the packaging of cosmetic products, typically a case (1), including a lid (2) fitted with a first hinge portion (20), a concave bottom (3) possibly including an inner frame (4) integral with said bottom (3) intended to form or receive a trough containing said cosmetic product, said bottom (3) or said inner frame (4) being fitted with a second hinge portion (30), said first and second hinge portions (20, 30) engaging to form a hinge (10), ensuring a rotation of said lid (2) relative to said bottom (3) or said inner frame (4), characterised in that:
a) said closure means (5) includes an engagement of two magnets (50, 51) facing each other when said packaging is closed, so as to develop a force of attraction F between said magnets (50, 51) and a torque c between said lid (2) and said bottom (3) or said inner frame (4), a first magnet (50) being anchored to said lid (2), a second magnet (51) being anchored to said bottom (3) or said inner frame (4), in such a way that said lid (2) is attracted towards said bottom (3) or said inner frame (4) for an angle of opening a below a maximum angle of opening aL, beyond which there no longer appears to be a significant attraction between said lid (2) and said bottom (3) or said inner frame (4),
b) said engagement is chosen in such a way that said maximum angle of opening αL is between 20° and 90°,
c) said magnets (50, 51) are fully or partially concealed, so as to give packaging for which the closure means (5) are invisible from view, at least when said lid (2) is closed,
d) said engagement is such said first and second magnets (50) (51) are located, on said lid (2) and on said bottom (3) or said inner frame (4) respectively, in such a way that said force F and said torque C is exerted at an average distance L from said axis of rotation (11) of between 3 and 30 mm.
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The invention relates to the field of cosmetic product packaging, typically cases of facial care powders.
Generally speaking, cases typically include:
A great many case embodiments are known, embodiments which may focus on one or more of the constituent parts of the case, particularly on the clasp or on the case opening.
Thus, as regards patents in the name of the applicant, the following may be cited:
On the one hand prior art cases generally include closure means formed by engagement of mechanical means, some integral with the lid, others integral with the bottom or with the inner frame, typically including a push button that allows a closure tab to be released by manual pressure.
These means generally include a resilient component which is compressed when the lid is closed and which relaxes during opening.
All these mechanical means involve both a high manufacturing cost, given the precision of the parts forming these means and the necessary absence of play, and a modification of the appearance of the cases, and particularly of their front part, which is the most visible.
On the other hand, as shown by the previously cited prior art, the diversity of means already used in the prior art is very great, each of these relatively specific means involving particular and therefore costly modifications to each case.
The applicant has therefore sought a general means which is applicable to a large number of cases without having to call back into question the design of each case in particular.
Lastly, one other problem is to offer cases which can be distinguished from prior art cases by the “way they handle” or “the way they feel”, in other words by the tactile perception of the manual effort involved in opening the case.
According to the invention, the packaging intended for packaging cosmetic products, typically a case, includes a lid fitted with a first hinge portion, a concave bottom possibly including an inner frame integral with said bottom intended to form or to receive a trough containing said cosmetic product, said bottom or said inner frame being fitted with a second hinge portion, said first and second hinge portions engaging to form a hinge ensuring a relative rotation of said lid relative to said bottom along an axis of rotation, and a means of closing said lid relative to said bottom or said inner frame, and is characterised in that:
Typically, the packaging includes two magnets.
The means of the invention resolve the problems posed.
Indeed, these means allow all closure devices to be eliminated, in all their great diversity.
They allow cases to be offered for sale that are wholly changed in appearance, given the elimination of the conventional closure means positioned on the opposite side from the hinge. It is in particular possible to have a closure means that is wholly or partially concealed when the case is open, and typically wholly concealed when it is closed.
The means of the invention also radically alter the way it feels on opening the lid.
These means are not specific to a particular from of case and can therefore apply to any type of case, and more generally to any type of packaging that includes a lid articulated by means of a hinge.
As will be shown hereinafter, these means are both straightforward to implement, and therefore relatively cost-effective, and efficient.
The maximum angle of opening αL was evaluated in the following way: a case being open—with α>αL—the bottom was placed under a plane support, with the hinge horizontal and the lid, free, in the vertical position, the slope of the support is gradually increased so as gradually to reduce the angle α until, for an angle of the support with the horizontal plane from equal to 90°−αL, the lid tilts abruptly being attracted by the bottom.
All the figures relate to the invention.
So as not to overburden the figures, and given the absence of any risk of confusion, the lid (2) and the bottom (3) have not been hachured, and the magnets (50, 51)—generally in cross-section—have been shown typically in the form of a rectangle in bold.
In the right-hand part of
An additional curve in dotted lines corresponds to the example—outside the invention—where the magnets are located in the place of the traditional closure means: with torque of identical magnets, the initial torque CI is higher, but the decrease in the torque C is then very rapid.
According to the invention, and as shown in all the figures, said engagement can be such that said first and second magnets (50) and (51) are located, on said lid (2) and on said bottom (3) or said inner frame (4) respectively, in such a way that said force F and said torque C is exerted at an average distance L from said axis of rotation (11) of between 3 and 30 mm, said average distance being taken at the distance separating the geometric centre or centre of gravity of the magnets (50, 51), and the axis of rotation (11) of the hinge (10).
Indeed, this makes it possible both to obtain a feel or a sensation on opening that is different from that obtained with prior art packaging or cases (1), and also different from what would be obtained if said magnets were placed elsewhere and typically in the place of the traditional clasp (see the curve in dotted lines in
Said average distance L may be between 5 and 20 mm.
Said average distance L may again be between 7 and 15 mm.
Said distance L has been shown in
As shown in
This surface S corresponds to the magnetic flux circulation surface. This is the contact or quasi contact surface, as in the example in
Typically, said first magnet (50) may be located in said fist hinge portion (20) or in a portion of said lid (2) juxtaposing said first hinge portion (20).
Likewise, said second magnet (51) may typically be located in said second hinge portion (30) or in a portion of said bottom (3) or of said inner frame (4) juxtaposing said second hinge portion (30).
Generally, and as a function particularly of the looked for initial closing torque CI, said surface S of the magnets (50, 51) may be between 5 and 30 mm2, and preferably between 10 and 20 mm2, the thickness E of the magnets (50, 51) being able to be between 0.3 mm and 3 mm.
As shown by way of examples in
This thickness Ep—typically of a few 1/10ths of a millimetre may be chosen to be fairly substantial so as to conceal said magnet (50, 51) and yet limited enough not to reduce the initial opening torque CI.
As shown in
In the example shown on
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It can be seen in
This type of anchoring means may be advantageous in so far as it is possible on the one hand to manufacture separately inserts (22, 32) fitted with magnets (50, 51), said inserts being of pre-set “standard” dimensions, and on the other hand, to manufacture components for packaging or cases (1), namely lids (2) or bottoms (3) or inner frames (4) that include a “standard” channel intended to engage with said inserts, in such a way as to ensure cost-effective rational production of any type of packaging or case.
The invention applies to any type of packaging or case including a hinge and which requires a closure means, said closure means not necessarily being sealed given that, as in the case of cosmetic product cases, these cosmetic products are typically compressed powders.
The invention makes it possible to simplify the manufacture of packaging and cases (1) for cosmetic products in particular by simplifying the closure means (5). In particular, it offers the possibility of replacing the conventional closure means by a means that is both discrete, and virtually invisible, adaptable as a function of the needs or wishes of users, and potentially applicable to any type of case (1) or packaging.
In this way, the invention, which affects at one and the same time the economic aspect, the aesthetic aspect and the functional aspect of packaging and cases (1), allows an advantageous renewal of the product offer, a renewal which is necessary and on-going in the packaging field, particularly in respect of cosmetic products, and in the field of cases in particular.