EP3886640A1

EP3886640A1 - Sealed press-stud

Info

Publication number: EP3886640A1
Application number: EP19802205.5A
Authority: EP
Inventors: Pierre Laurent; Tiphaine LAURENT; Bruno DENIZART
Original assignee: Daude Fabrication
Current assignee: Daude Fabrication
Priority date: 2018-11-29
Filing date: 2019-11-20
Publication date: 2021-10-06
Anticipated expiration: 2039-11-20
Also published as: BE1026815A1; WO2020109101A1; PL3886640T3; PT3886640T; EP3886640B1; BE1026815B1

Abstract

The invention relates to a press-stud (1) comprising a male part (6) that engages in the female part (2) via pressing, the press-stud (1) being sealed by an application of sealant (11), on the one hand to a flange (33) and to the foot of a riveting shank (3) capped by a cap (4) of the female part (2) and, on the other hand, to a lower cavity (81) of a base (8) extending and surrounding a riveting spike (7) of the male part (6).

Description

Waterproof snap button

Technical area

The present invention relates to a press stud.

Prior art

Nowadays, press studs are used in a wide variety of applications, including as a clothing closure system. It is known that a snap button is made up of four parts generally called "cap part", "case", "ball" and "ball eyelet" which are assembled two by two on carrier strips to form parts called " female ”and“ male ”able to engage each other by pressure. A carrier strip may for example be a first part of clothing and another carrier strip may for example be a second part of clothing.

A defect of a traditional snap button is that it is not waterproof. However, in the context of certain military, sports and / or maritime applications, it is necessary to have clothing elements which are waterproof.

More or less waterproof snaps have therefore been developed in the past.

In particular, the European publication number patent

EP0401574B1 discloses a sealed press stud provided with first sealing elements composed of sealing agent in the cap, in an eyelet of the cap, in a ball of suitable shape, as well as a disc of elastic material arranged in each of the female and male parts, when assembled on a carrier strip.

A shortcoming of this snap button is its structural complexity and the need to use different models of prefabricated discs which correspond to different models of parts used. Another defect of this press stud is that leaks are created at the press stud: it is not waterproof.

Summary of the invention

An object of the invention is to provide a snap button which is particularly waterproof and structurally simple to manufacture.

To this end, the invention proposes a press button comprising: a female part comprising:

• an upper riveting part comprising:

a riveting rod;

a collar extending and surrounding an upper end of the riveting rod;

a cap covering the collar and the upper end of the riveting rod;

• a housing, and comprising:

an upper opening for accommodating at least part of the riveting rod;

a lower opening;

closing elements;

a male part comprising:

• a lower riveting part comprising:

a rod-shaped riveting nail, including an upper end;

a collar-shaped base extending and surrounding a lower end of the riveting nail;

• a push-fit fitting, and comprising:

a protrusion sized to engage in the lower opening and cooperate with the closing elements;

a positioning location to accommodate the upper end of the riveting nail; characterized in that the press stud further comprises a first sealing element covering at least partially a lower surface of the flange and an outer surface of the upper end of the riveting rod and a second sealing element located at the at least partially in a lower recess in the base which surrounds the lower end of the riveting nail.

The snap fastener according to the invention makes it possible to provide a particularly good seal when it is used to attach two carrying bands, for example two parts of clothing. Indeed, the flexibility of the sealing elements allows the snap button to closely follow the carrier strips at the periphery of the perforation points. This adjusted contact forms a barrier for a liquid which would penetrate by the periphery of the base or of the cap and would slide along the strips, for example, by capillarity.

In addition, the arrangement of the sealing elements with respect to the other elements of the snap button, in particular the covering of the lower surface of the collar and of the external surface of the upper end of the rod by the first element sealing and the presence of the second seal in a hollow in the base, prevents infiltration between the sealing elements and the other elements of the press stud.

Thus, the lower riveting part is advantageously distinguished from known similar parts which include an annular base without an adequate location for depositing sealing material therein. In this case, unlike the invention, it is not possible to deposit a sealing material which suitably follows the shape of the base, hence the use in the patent cited in the prior art of a disc of elastic material.

In addition, the press button according to the present invention is structurally simple to manufacture since it is simply necessary to provide a lower riveting part provided with the lower recess at its base, and then deposit sealing material forming the sealing elements in this lower recess and at the level of the upper riveting part. In particular, it follows that the second sealing element is preferably (arranged) completely in the lower recess.

It follows that the press button according to the invention is simpler, faster and less expensive to manufacture.

The press button described above includes the parts of a traditional press button, namely:

a "cap part" consisting of the upper riveting part, a "housing" consisting of the housing,

a "ball" consisting of the push-fit piece, and a "ball eyelet" consisting of the lower riveting part.

In the context of this document, the term "parts" of a press stud preferably refers to these four elements. Each of these parts can be made of different materials, preferably metallic. A cap of a non-metallic material would not, however, depart from the scope of the invention.

The present invention is in no way limited to a press button in the form of an assembly or not on carrier bands. A set of the aforementioned parts to form a snap button falls within the scope of the invention, as does this set of parts fixed to carrier bands.

The housing and the press-fit fitting are preferably standard, unmodified parts conventionally used for a press-stud. Since the heart of the present invention preferably does not rest on these parts, they will not be discussed much in the present document. The cooperation of the protuberance with the closure elements are particularly known and makes it possible to maintain the protrusion in the housing after pressure has been exerted on the male part to engage it in the female part. The accomplishment of this commitment is typically marked by a "click". The closure elements of a housing preferably comprise at least one spring for implementing this technical effect.

In the context of this document, the term "riveting" preferably refers to an assembly using a rivet piece comprising a cylindrical rod, preferably metallic, capable of being solid or hollow, provided with a head d 'a cross section wider than that of the rod. In the context of the invention, the press button comprises two such parts, namely the upper and lower riveting parts, the heads of which are respectively the collar capped with the cap, and the base.

The rod and the riveting nail are preferably cylindrical and hollow. Preferably, the riveting rod extends along an axis perpendicular to the flange, and the riveting nail extends along an axis perpendicular to the base. The collar as such preferably extends over a whole concave lower face of the cap. A collar located in the extension of the riveting rod would not depart from the scope of the invention, however. In particular, in this case, and more generally in the case where the collar does not extend essentially over the aforementioned lower concave face of the cap, the first sealing element also extends radially beyond the collar, on this concave face.

For the purposes of this document, a "sealing element" is a flexible and waterproof element. It is preferably designed to closely fit the surfaces of the elements of the press stud on which it is fixed. It is made of a sealing material. The first and second sealing elements are preferably made of same sealing material. Preferably, the sealing material is hydrophobic.

For the purpose of this document, the riveting rod comprises a lower end and an upper end. It further comprises an upper section portion which adjoins its upper end.

For the purpose of this document, the riveting nail includes a lower end and an upper end. It further comprises a portion of lower section which adjoins its lower end.

Preferably, the first sealing element in the vicinity of the junction between the flange and the riveting rod, that is to say, at the upper end of the riveting rod, has the form of a conical annular portion surrounding the upper section portion of the riveting rod, widening as it approaches its upper end, so as to obtain a greater thickness of the first sealing element around a point of perforation of a carrying strip by the riveting rod, when the female part is assembled on this carrying strip. This form of conical annular portion is visible in FIGS. 1, 2 and 5.

The use, in this document, of the verb "to understand", of the verb "to include", of their variants, as well as its conjugations, cannot in any way exclude the presence of elements other than those mentioned. Similarly, the use, in this document, of an indefinite article "a", "an", or of a definite article "le", "la" or "", to introduce an element does not exclude the presence of a plurality of these elements.

According to a preferred embodiment of the invention, the base comprises a ring having an essentially flat surface, and having a circular internal edge extending radially so as to form the lower recess; and the lower recess extends into the lower end of the riveting nail.

In one embodiment of the invention, the circular inner edge of the ring is the direct radial continuation of the lower recess. Thanks to this, the base is particularly simple to manufacture and precisely locates the lower recess in the direct vicinity of the lower end of the riveting nail, the latter being opposite the upper end, along an extension direction. of the riveting nail. The base consists essentially of a ring (flat) in which the lower recess is made, which is arranged around a lower section of the riveting nail. The curvature of the base preferably changes abruptly at the circular inner edge, between the ring and the lower recess. As illustrated in the figures below introduced and numerically in the detailed description, a radial extension of the ring (measured perpendicular to an axis of revolution of the base) is preferably greater than or equal to half of a radial extension of the lower recess (measured perpendicular to the axis of revolution), more preferably 89% of this extension, more preferably still equal to 90% of this extension. Optionally, the radial extension of the ring is greater than or equal to the radial extension of the lower recess. Preferably, a depth of the recess, measured parallel to the axis of revolution of the base, is greater than or equal to one half of the radial extension of the lower recess, more preferably 89% of this extension, even more preferably equal to 90% of this extension.

The lower recess and the lower section of the riveting nail preferably border a space in the form of an annular bowl filled, at least partially, with sealing material. This form of bowl is well defined for the proposed use. In particular, constitutes a geometrical singularity compared to the total geometry of the base. The cup preferably extends radially over less than 55% of the radial extension of the base, and is thus located around the lower end of the riveting nail (i.e., only where it is really necessary to introduce the second sealing element). The depth of the recess corresponding to the depth of the bowl is large enough for the bowl to be of a volume large enough to accommodate enough sealing material (preferably in a liquid form which hardens over time) to constitute the second sealing element according to the invention which makes it possible to obtain a sufficient seal at the point of perforation by the riveting nail.

Advantageously, the shape of the recess is adapted to serve as a bowl accommodating a quantity of sealing material which is preferably deposited in fluid form and capable of hardening, which allows the second sealing element to be particularly well suited. to the shape of the lower riveting part. The bowl shape allows a sufficient and predetermined quantity of sealing material to be deposited. Thus, according to this preferred embodiment, the lower section of the riveting nail is completely surrounded by the second thick sealing element of sealing material. This makes it possible to obtain a particularly good seal of the press stud at the point of perforation of a carrier strip on which the male part is fixed.

According to a particular embodiment of the invention, the base comprises an upper protrusion, preferably annular, located radially between the lower recess and the ring. Preferably, it surrounds and extends radially the lower recess.

Advantageously, this particular embodiment is suitable for a push-fit fitting part whose protuberance is of annular shape, the latter preferably overcoming the protuberance when the male part is assembled on a carrier strip, so that 'she is compressed between the protuberance and the outgrowth. In the case where the interlocking part comprises hollow protuberances, the carrier strip is compressed lower by the protuberance in the protrusion, this forming a sort of barrier of compressed material surrounding the assembly of the riveting nail with the part d 'pressure fitting, in particular, around a point of perforation of the carrier strip by the riveting nail. This barrier therefore helps to prevent fluid infiltration through this puncture point.

Preferably, the base consists of the ring, the lower recess, and, if the base includes it (according to this particular embodiment of the invention), the upper protuberance.

A press stud comprising a base provided with this upper protuberance, without lower recess, or any deposit of sealing material is of course possible and inexpensive. However, the aforementioned barrier formed by compression of the material of the carrier strip alone is not sufficient to obtain an excellent seal. Such a press button therefore departs from the scope of the invention, but can easily be envisaged for less demanding applications from a sealing point of view.

Preferably, this particular embodiment of the invention is combined with the aforementioned preferred embodiment, the base comprises a ring extending essentially planar, and of which a circular inner edge extends radially into the upper protuberance, which itself surrounds and extends radially into the lower recess, which itself extends into a lower section of the riveting nail which extends into the lower end. This combination of embodiments is illustrated in FIGS. 6 and 7.

According to a preferred embodiment of the invention, the cap comprises a rim, preferably open, circumferentially bordering the collar. By the term "open" when speaking of the rim, it is preferable to understand that the rim is not closed on itself or on the cap, and that it comprises a curved end, preferably circular, free. Such a rim preferably has a section profile in the form of a "C" as illustrated for example in FIGS. 1, 2 and 5. This rim therefore forms a recess making it possible to receive an external radial end of the first sealing element .

Advantageously, such a rim, preferably open, makes it possible to avoid a flow of the sealing material, when it is deposited in a liquid form, outside the upper riveting part, since it is retained so circumferential by the open rim.

Preferably, the first sealing element: covers, partially or totally, the underside of the collar, is bordered circumferentially by the flange, and

extends into a ledge cavity,

this cavity is preferably bordered by an interior space of a "C" shape with a section profile of the rim.

Thus, and advantageously, the first sealing element covers the entire underside of the flange in contact with a carrier strip when the female part is assembled, and preferably any space between the top of the cap and the carrier strip, so as to prevent any fluid infiltration under the cap and guarantee the tightness of the female part of the press stud.

According to one embodiment of the push-fit fitting, the protuberance is of an annular shape. This type of part is known to a person skilled in the art and represents approximately 80% of the “ball” profiles commonly used to make snaps.

In this case, preferably:

the positioning location consists of an orifice in the part surrounded and surmounted by the projection; and the upper end is closed.

By a "closed" end, it is preferably meant an end of a form of hollow cylindrical rod, the walls of which close on themselves at their end, and this preferably smoothly. Such an upper termination is illustrated for example in FIGS. 3 to 8 introduced in the remainder of this document.

Closing the upper end is advantageous for better sealing of the press button because it is positioned in the positioning location of the fitting part which consists of an orifice. The closure helps to prevent fluid infiltration into the riveting nail or into the socket.

Preferably, the orifice is formed in a central platform in the form of a disc of the pressure fitting part, this central platform being surrounded and extended radially by the protuberance of an annular shape. Preferably, an annular border surrounds and extends radially from the outgrowth. In this case, the central platform extends on a first plane and the annular border extends on a second plane. Preferably, according to a preferred embodiment, these first and second planes are identical. This preferred embodiment is in particular shown in Figure 8 below. An advantage of this preferred embodiment is that the press stud is then all the more waterproof since the central platform and the annular edge both rest flat on a carrier strip when the male part is fixed on it. . This preferred embodiment is however in no way limiting of the case where the first and second planes are not confused. Figures 3 to 7 below introduced illustrate the case where the central platform and the annular edge do not get along in the same plane.

Preferably, according to the embodiment of the pressure fitting part where the protrusion is of an annular shape, the orifice of the pressure fitting part is of a section essentially equal to a section of the riveting nail, which makes it possible to close off any possible passage for a fluid between the riveting nail and the fitting part so as to further contribute to the tightness of the press stud.

According to another embodiment of the push-fit fitting, the protuberance is of a spherical shape. This type of part is known to a person skilled in the art. This "ball" profile is commonly used to make snaps.

In this case, preferably:

the positioning location consists of a hole in the part that engages below in the projection; and

the upper end is open.

In the context of this document, by one end and / or one “open” end, it is preferably understood an end and / or a circular end of a shape of cylindrical hollow rod which does not close on itself, unlike in the case of an end and / or closed end.

The protuberance is preferably aligned axially with the riveting nail. The upper end is housed below in the protuberance, when the male part is fixed on a carrier strip, this end preferably being completely covered by the protuberance. The upper end can therefore be opened, which is preferable to more easily perforate the aforementioned carrier strip and be housed in the orifice of the interlocking part by pressure.

In one embodiment of the invention, the first and / or second sealing element comprises a polymeric material, for example a silicone.

In one embodiment of the invention, the first and / or second sealing element is made of a material having a module for Young less than 1000 MPa, preferably less than 100 MPA. This allows the sealing element to fit particularly well with the other elements of the press stud and the strip.

In one embodiment of the invention, the first and / or second sealing element is made of a material that can be placed in the press stud in liquid form.

According to a preferred embodiment of the invention, the sealing material is a liquid material at a temperature of 20 ° C and, preferably, capable of hardening in less than twenty minutes, more preferably in less than ten minutes.

Advantageously, the sealing material can be deposited in the aforementioned appropriate locations of the upper riveting part and in the lower recess, so that it conforms particularly well to the shape of these parts and gradually dries to form the first sealing element. and the second sealing element. More preferably, the sealing material comprises a two-component silicone that vulcanizes by addition.

More preferably, the sealing material consists of Plastiform® containing vinyl, silicic acid and aggregation materials.

Advantageously, this material is known, simple and safe to use. The polymerization of this silicone is carried out simply in an injector, without heating, or odor, without the need for oxygen or heat. The setting time of this material at room temperature of 20 ° C is between 30 and 90 seconds, and the curing time at this temperature is between 7 and 9 minutes, which allows quick and easy use to produce a button pressure according to the invention, without the need for installation or any particular device. In addition, this sealing material is that it is biocompatible, non-polluting and non-toxic. It is resistant to inorganic chemicals and UV rays, and conforms to the surfaces to which it is applied, to the nearest micron. For all these reasons, this sealing material is advantageously suitable for being deposited on a press stud according to the invention.

According to one embodiment of the housing, it comprises an upper face and a lower face parallel to one another and assembled by a side wall, the upper opening being included in the upper face and the lower opening being included in the lower face . Such housings are known to a person skilled in the art, advantageously simple and inexpensive to use among the parts of the press button.

The present invention also provides a clothing element comprising a press button according to the invention, a first and a second support strip, and characterized in that:

the female part is fixed on the first support strip, so that:

On the one hand, the cap and the flange, and on the other hand, the housing, are supported respectively on either side of the first support strip,

The riveting rod passes through the upper opening of the housing and a point of perforation of the first support strip,

• a lower end of the riveting rod is immobilized by riveting in the housing;

the male part is fixed on the second support strip, so that:

The base and the part are supported on each side of the second support strip,

• the riveting nail passes through a point of perforation of the second support strip;

• the upper end of the riveting nail is immobilized in the positioning location. The term "item of clothing" preferably refers to any item used for human clothing. Examples of a clothing item are clothes, shoes, bags, hats, etc. In particular, the present invention also provides a waterproof garment as such an item of clothing. More preferably, this waterproof garment is a miliary garment.

All of all of the embodiments and all of the advantages of the press button according to the present invention transpose mutatis mutandis to this item of clothing, and in particular to this waterproof garment.

The snap of the item of clothing is assembled and attached to that item of clothing. The aforementioned characteristics of the attachment of the female and male parts to the carrier strips follow by riveting the rod and the riveting nail through the first and second carrier strips respectively, as illustrated, for example, in the figures. 1 to 4.

The present invention also proposes a method of manufacturing a press button the invention comprising:

a step of manufacturing the first sealing element consisting of a step of depositing a quantity of the sealing material in fluid form on the underside of the collar,

a step of manufacturing the second sealing element consisting of a step of depositing another quantity of the sealing material in fluid form in the lower recess of the base,

a step of hardening the sealing material.

The manufacturing method further comprises steps of manufacturing the upper riveting part, the housing, the lower riveting part and the pressure fitting part. The various preferred sub-embodiments and advantages of the snap button according to the highly preferred embodiment of the above-mentioned invention transpose mutatis mutandis to the present manufacturing method.

In particular, and preferably, this sealing material consists of a two-component silicone that vulcanizes by addition, more preferably of Plastiform®.

A major advantage of this manufacturing method is that it makes it possible to obtain a first sealing element and a second sealing element which adapts extremely well to the geometry of the lower recess, of the underside of the flange and from the outer surface of the upper section of the riveting rod, since the sealing material is deposited in a fluid form which hardens in a short time. In this way, when the press stud is assembled on carrier strips, the first sealing element and the second sealing element completely cover the periphery of the perforation points of the rod and of the riveting nail through these load-bearing bands, whatever the possible shape defects of the base, the flange or the riveting rod following their manufacture.

Preferably, the steps of this manufacturing method are automated. The sealing material forming the first sealing element and the second sealing element is preferably deposited by a robotic unit. This is preferably calibrated to deposit exactly the quantity and the other quantity in their respective locations depending on the model and size of the press button to be manufactured.

The present invention also proposes the use of a two-component silicone vulcanizing by addition, preferably Plastiform®, for manufacturing a press stud. Brief description of the figures

Other characteristics and advantages of the present invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended figures among which:

Figure 1 illustrates a schematic view of an unassembled female part of a snap button according to a preferred embodiment of the invention;

Figure 2 illustrates a view of the female part illustrated in Figure 1 assembled;

Figure 3 illustrates a schematic view of an unassembled male part of a snap button according to a preferred embodiment of the invention;

Figure 4 illustrates a view of the male part illustrated in Figure 3 assembled;

Figure 5 illustrates a schematic view of an engagement of the male part illustrated in Figure 4, in the female part illustrated in Figure 2;

FIG. 6 illustrates a schematic view of an unassembled male part of a press button according to a combination of a particular embodiment of the invention with a preferred embodiment of the invention;

FIG. 7 illustrates a view of the male part illustrated in FIG. 6 assembled;

- Figure 8 illustrates a schematic view of an unassembled male part of a press button according to a preferred embodiment of the invention.

The drawings of the figures are not to scale. Generally, similar elements are denoted by similar references in the figures. In the context of this document, the elements identical or analogous can bear the same references. In addition, the presence of reference numbers or letters in the drawings cannot be considered as limiting, including when these numbers or letters are indicated in the claims.

Detailed description of particular embodiments of the invention

In the context of this document, preferably, the terms “upper” and “lower” are used in a similar manner to the terms “first” and “second” to distinguish two similar elements, and / or more preferably, to indicate a general position. of one element with respect to another when the male and / or female parts and / or the entire press stud are assembled along a fictitious axis. In this case, the term "upper" refers to a situation along the axis, and the term "lower" refers to an opposite situation along this axis. More specifically in the context of the figures shown, the fictitious axis, not shown, is vertical, oriented from the bottom up, the "upper" elements, located above, surmounting the "lower" elements, located below. These terms and these representations are in no way limiting on a rigid arrangement of the press-stud parts, one in relation to the other. In particular, a press button according to the invention can be both in the form of spare parts and in assembled form on a covering element without departing from the scope of the invention.

More generally, the invention is not limited to the particular embodiments described in this document, nor limited by the figures. The drawings and / or figures described are only schematic and are not limiting. In particular, the figures represent sectional views of parts of the snap along a plane containing the fictitious commented axis. These parts preferably have essentially a rotational symmetry about the imaginary axis. Even if it is not clearly visible in the figures, these parts generally have locally a profile of revolution around this fictitious axis, typically ellipsoidal, cylindrical or annular.

Figures 3, 4 and 5 below commented on illustrate a push-fit fitting, the projection of which is of annular shape. Another push-fit fitting, for example, the protrusion of which would be spherical, would not however depart from the invention, as described in the summary of the invention.

FIG. 1 illustrates a non-assembled female part 2 of a snap button according to a preferred embodiment of the invention. The female part 2 includes:

• an upper riveting part 21 comprising:

a rivet rod 3 of essentially cylindrical shape extending around a fictitious axis, comprising two ends hereinafter called upper 31 and lower 32 ends, the latter being free and open;

a flange 33 which surrounds an upper end 31 of the riveting rod 3, and which extends it by propagation around a plane perpendicular to the imaginary axis;

a cap 4, a lower concave face covering the collar 33 and the upper end 31 of the riveting rod 3, and including an annular rim 41 of section in the shape of a "C" circumferentially borders the collar 33;

a first sealing element 35 of annular shape composed of a sealing material 1 1 covering a lower face of the flange 33 opposite the cap 4 by extending radially from the riveting rod 3 into a cavity of the rim 41 of the cap 4, the first sealing element also covering part of the external surface of an upper section 34 of the riveting rod 3; • a partially hollow box 5 of annular shape, and comprising: an upper face 54 and a lower face 55 essentially plane, parallel and assembled by means of a locally cylindrical side wall 56;

an upper opening 51 in the upper face 54, this upper opening 51 having a disc shape and being dimensioned to receive the riveting rod 3;

a lower opening 52 in the lower face 55 and this lower opening 52 having a disc shape and being dimensioned to accommodate an annular protuberance (described below);

closing elements 53 comprising springs arranged annularly inside the housing 5, adjacent to the lower opening 52, and capable of cooperating with the protuberance;

aligned on either side of a carrier strip 20 on which the female part 2 is intended to be fixed.

Figure 2 illustrates the female part 2 illustrated in Figure 1 after assembly of the upper riveting part 21 and the housing 5 on the carrier strip 20. On the one hand, the cap 4 and the flange 33, and on the other on the other hand, the housing 5, more precisely, its upper face 54, bear respectively on either side of the support strip 20, the riveting rod 3 passing through the carrier strip 20 by a perforation point 20 ' of the latter, so that a lower section of the riveting rod 3 enters the housing 5 through the upper opening 51. This configuration of the female part 2 is obtained by alignment along the fictitious axis of the riveting rod 3, and openings 51 and 52, on either side of the carrier strip 20. The upper riveting part 21 and the housing 5 are then surrounded by a tool which presses them along the imaginary axis, on either side of the carrier strip 20, so that the riveting rod 3 pierces the carrier strip 20 by perforation point 20 ', and partially enters by the upper opening 51 of the housing 5, its lower end 32 thus undergoing compression deforming it and rolling it in the housing 5, so that it is immobilized therein.

FIG. 3 illustrates a male part 3 being unassembled with a press button according to a preferred embodiment of the invention. The male part 3 includes:

• a lower riveting part 61 comprising:

a riveting nail 7 of body of cylindrical shape extending around the imaginary axis, of the shape of a cylindrical rod, comprising, on the one hand, an upper end 71 closed, free, of slightly pointed shape and rounded in its end, and on the other hand, a cylindrical lower section 73 which is bordered lower by a circular lower end 72;

a base 8 in the form of a collar surrounding the lower end 72 of the riveting nail 7, and extending it by propagation around a plane perpendicular to the fictitious axis, this base 8 being of a particular shape because it comprises a ring 83 extending essentially planarly on the plane, of which a circular inner edge is extended radially by a lower recess 81, which itself surrounds and is extended by the lower end 72 of the riveting nail 7, so that there is an annular bowl-shaped space bordered by an external surface of the lower section 73 and by the lower recess 81;

a second sealing element 82 of the sealing material 1 1 deposited in the lower recess 81, and at least partially filling a space in the form of an annular bowl;

A pressure fitting part 9, called a "ball", having a shape of revolution and a lower opening, and comprising: a protrusion 91 of annular shape dimensioned to engage in the lower opening 52 and to cooperate with the closure elements 53;

an annular border 93 surrounding and extending radially from the protuberance 91, extending along a plane perpendicular to the imaginary axis;

a central platform 94 of a disc shape, surrounded and extended radially by the projection 91;

a positioning location 92 consisting of a disc-shaped orifice made in the central platform 94 and dimensioned to receive the upper end 71 of the riveting nail 7, and of the same section diameter as the riveting nail 7, this orifice being circumferentially surmounted by the projection 91;

aligned on either side of a carrier strip 60 on which the male part 3 is intended to be fixed.

As expressed above, the base 8 (and the lower riveting part) has rotational symmetry around the notional axis. Equivalently, the fictitious axis corresponds to an axis of revolution of the base 8, denoted by Z in FIG. 3. An example of a particular embodiment of the lower riveting part 61 proposes:

a length of the riveting nail 7, measured along the imaginary axis, of between 5.6 and 6 mm, preferably 5.8 mm;

a diameter D of section of the riveting nail 7, measured along a straight line perpendicular to the imaginary axis, of between 2.1 and 2.5 mm, preferably 2.3 mm;

a “maximum depth of the bowl-shaped space” (corresponding equivalently to a so-called “depth P of the lower recess 81”), measured along the fictitious axis, at the level from the surface of the riveting nail 7, between 1.5 and 1.8 mm, preferably 1.65 mm;

an “annular extension radius” of the lower recess 81 (or, equivalently called in the context of this document, “radial extension” r of the lower recess 81), measured perpendicular to the imaginary axis, between 1, 7 and 1.9 mm, preferably 1.85 mm;

a maximum diameter of circular extension of the lower recess 81, measured perpendicular to the imaginary axis, between 5.8 and 6.2 mm, preferably 6 mm;

an “annular extension radius” of the ring 83 (or, equivalently called in the context of this document, “radial extension” R of the ring 83), measured perpendicular to the fictitious axis, including between 1.5 and 1.8 mm, preferably 1.65 mm;

a maximum diameter of circular extension of the ring 83, measured perpendicular to the imaginary axis, between 9 and 9.6 mm, preferably 9 mm.

These values illustrate particular dimensions of the lower riveting part 61, and are in no way limitative of the scope of the invention. The mention of these values is deemed to disclose any proportion between them. Optionally, the maximum circular extension diameter of the ring 83 is greater than 9.6 mm.

As can be seen in FIG. 3, a section of the base 8 along a plane comprising the fictitious axis has, on either side of the fictitious axis, a profile on the right at the level of the ring 83, is continually and regularly extending into a sigmoidal function graph profile at the level of the bowl defined by the lower recess 81, itself extending continuously and regularly at the lower end 72 of the riveting nail 7. In particular , the edge of the section of the bowl according to this plane has, on either side of the fictitious axis, a graph profile of symmetric sigmoidal function around an inflection point. In particular, it has a change in concavity, making it possible to define the shape of the bowl appropriately.

FIG. 4 illustrates the male part illustrated in FIG. 3 after the assembly of the pressure fitting part 9 and the lower riveting part 61 on the carrier strip 60. On the one hand, the base 8, more precisely, the ring 83 and an upper surface of the second sealing element 82, and on the other hand, the pressure fitting part 9, more precisely the annular edge 93, bear respectively on either side of the support strip 60, the riveting nail 7 passing through the carrying strip 60 by a perforation point 60 'thereof, so that the upper end 71 penetrates below into the fitting part 9 by pressure, and passes through that -ci, to come out through the orifice of the positioning location 92 and be immobilized there. In this case, the ring 83 and the annular edge 93 press parallel the carrier strip 60. This assembly can be obtained by pressing techniques similar to those used for the assembly of the female part 2.

FIG. 5 illustrates the press button 1 consisting of the female part 2 and the assembled male part 6 illustrated in FIGS. 2 and 4 respectively. The male part 6 is engaged by pressure in the female part 2 thanks to a cooperation of the protrusion 91 with the springs of the closing elements 53. Thanks to the first sealing element 35 and to the second sealing element 82, the points of perforations 20 ′ and 60 ′ are bordered with sealing material 1 1, preventing possible fluid infiltration by these points 20 ′ and 60 ′ which could, for example, be due to rain flowing on the external face of the carrier strip 20 and cap 4.

FIG. 6 illustrates a male part 3 being unassembled with a press button according to a combination of a particular embodiment of the invention with a preferred embodiment of the invention, as described in the summary of the invention.

FIG. 7 illustrates the male part illustrated in FIG. 6 after the assembly of the push-fit fitting part 9 and the lower riveting part 61 on the carrier strip 60.

Figures 6 and 7 differ from Figures 3 and 4 respectively in that the base 8 comprises an upper annular protuberance 84 surrounded and extended radially by the ring 83, and radially surrounding and extending the lower recess 81. The annular protuberance upper 84 allows, during assembly of the male part 6 on the carrier strip 60 ′, to compress the latter along the fictitious axis, in the projection 91 of the push-fit piece 9, so as to contribute to the tightness of the press stud. In this case, as can be seen in FIG. 6, a section of the bowl shape along a plane comprising the fictitious axis has, on either side of the fictitious axis, a “U” profile, of which one branch belongs to the cylindrical lower section 73 and the other branch of which extends continuously and regularly at the level of the upper protuberance 84.

FIG. 8 illustrates a male part 3 not assembled of a snap button according to a preferred embodiment of the invention, as described in the summary of the invention.

Figure 8 differs from Figure 3 in that the central platform 94 extends in the same plane as the annular edge 93, which allows an advantageous simultaneous support of the central platform 94 and the annular edge 93 when the part male 3 is assembled on a carrier strip 60. This support allows better overall tightness of the assembled snap.

In summary, the present invention relates to a press button 1 comprising a male part 6 engages in the female part 2 by pressure, the press button 1 being sealed by a deposit of a material sealing 1 1, on the one hand on a flange 33 and at the foot of a riveting rod 3 capped by a cap 4 of the female part 2, and on the other hand, in a lower recess 81 of a base 8 extending and surrounding a riveting nail 7 of the male part 6.

The present invention has been described in relation to specific embodiments, which have a purely illustrative value and should not be considered as limiting. In general, it will be obvious to a person skilled in the art that the present invention is not limited to the examples illustrated and / or described above. The invention includes each of the new features and all of their combinations.

Claims

1. Snap button (1) comprising:

a female part (2) comprising:

• an upper riveting part (21) comprising:

a riveting rod (3);

a flange (33) extending and surrounding an upper end (31) of the riveting rod (3); a cap (4) covering the flange (33) and the upper end (31) of the riveting rod (3);

• a housing (5), and comprising:

an upper opening (51) for accommodating at least a portion of the riveting rod (3);

a lower opening (52);

closing elements (53);

a male part (6) comprising:

• a lower riveting part (61) comprising:

a riveting nail (7) in the form of a rod, and comprising an upper end (71);

a base (8) in the form of a collar extending and surrounding a lower end (72) of the riveting nail (7);

• a pressure fitting part (9), and comprising: a protrusion (91) dimensioned to engage in the lower opening (52) and cooperate with the closing elements (53);

a positioning location (92) to receive the upper end (71) of the riveting nail (7);

characterized in that the press stud further comprises a first sealing element (35) at least partially covering a lower surface of the flange (33) and an outer surface from the upper end (31) of the riveting rod (3) and a second sealing element (82) located at least partially in a lower recess (81) of the base (8) which surrounds the lower end ( 72) of the riveting nail (7).

2. Snap button (1) according to the preceding claim, characterized in that:

the base (8) comprises a ring (83) having a substantially planar surface, and having a circular inner edge extending radially so as to form the lower recess (81); and in that

the lower recess (81) extends at the lower end (72) of the riveting nail (7).

3. Snap button (1) according to the preceding claim, characterized in that the base (8) comprises an upper projection (84) located radially between the lower recess (81) and the ring (83).

4. Snap button (1) according to claim 2 or 3, characterized in that the base (8) consists of the ring (83), the lower recess (81), and, if the base (8) includes , the upper protuberance (84).

5. Press button (1) according to any one of claims 2 to 4, characterized in that a radial extension (R) of the ring (83), is greater than or equal to one half of a radial extension (r) of the lower recess (81).

6. Snap button (1) according to the preceding claim, characterized in that a depth (P) of the lower recess (81), measured parallel to an axis of revolution (Z) of the base (8), is greater than or equal to one half of the radial extension (r) of the lower recess (81).

7. Snap button (1) according to any one of the preceding claims, characterized in that the second sealing element (82) is completely in the lower recess (81).

8. Snap button (1) according to any one of the preceding claims, characterized in that the cap (4) comprises an open flange (41) bordering the collar (33) circumferentially.

9. Snap button (1) according to the preceding claim, characterized in that the first sealing element (35):

partially or completely covers the underside of the collar (33),

is bordered circumferentially by the rim (41), and extends into a cavity in the rim (41).

10. Snap button (1) according to any one of claims 1 to 9, characterized in that:

the protuberance (91) is of an annular shape; in that the positioning location (92) consists of an orifice of the pressure fitting part (9) surrounded and surmounted by the protuberance (91); and in that

the upper end (71) is closed.

1 1. Snap button (1) according to the preceding claim, characterized in that the orifice of the part (9) for press fit is of a section essentially equal to a section of the riveting nail (7).

12. Press button (1) according to any one of claims 10 or 1 1, characterized in that the positioning location (92) is formed in a central platform (94) of a disc shape, surrounded and extended radially by the projection (91), this central platform (94) extending on the same plane as an annular border (93) of the part (9) for interlocking by pressure, this annular border (93) surrounding and extending the protrusion radially (91).

13. Press button (1) according to any one of claims 1 to 9, characterized in that:

the outgrowth (91) is spherical; in that the positioning location (92) consists of an orifice of the pressure fitting part (9) engaging below in the projection (91); and in that

the upper end (71) is open.

14. Press button (1) according to any one of the preceding claims, characterized in that the first (35) and / or second

(82) sealing element is made of a material which can be placed in the press stud in liquid form.

15. Clothing element comprising a press button (1) according to any one of the preceding claims, characterized in that it comprises a first (20) and a second (60) support strips, and in that:

the female part (2) is fixed on the first support strip

(20), so that:

On the one hand, the cap (4) and the flange (33), and on the other hand, the housing (5), are supported respectively on either side of the first support strip (20),

The riveting rod (3) passes through the upper opening (51) of the housing (5) and a perforation point (20 ’) of the first support strip (20),

• a lower end (32) of the riveting rod (3) is immobilized by riveting in the housing (5);

the male part (6) is fixed on the second support strip

(60), so that:

The base (8) and the pressure fitting part (9) are supported on either side of the second support strip (60),

• the riveting nail (7) passes through a perforation point (60 ’) of the second support strip (60);

• the upper end (71) of the riveting nail (7) is immobilized in the positioning location (92). 16. Method of manufacturing a press button (1) according to any one of claims 1 to 14 comprising:

a step of manufacturing the first sealing element (35) comprising a step of depositing sealing material (1 1) in liquid form on the underside of the collar (33), a step of manufacturing the second sealing element (82) consisting of a step of depositing sealing material (1 1) in liquid form in the lower recess (81) of the base (8),

- a step of hardening of the material (1 1).

17. Use of a two-component addition vulcanizing silicone to manufacture a press stud (1) according to any one of claims 1 to 14.