FR3092942A1 - System comprising supports provided with connectable and disconnectable electrical or electronic circuit parts - Google Patents

Abstract

The invention relates to an electrical or electronic system comprising a first rigid support (1) with a first part (10) of an electrical or electronic circuit, and at least a first pair of fastening elements (11, 12), at least one of said fastening elements of said first pair being electrically connected to said first circuit part (10). The system comprises a second elastically expandable support (2) with a second circuit portion (20) and at least a first pair of fastening elements (21, 22) at least one of said fastening elements of said first pair being electrically connected to said second circuit part (20). In the coupled state of said pairs of fastening elements, the fastening elements (21, 22) of said at least a first pair of the second support (2) exert by the elasticity of the second support (2), a restoring force on the fastening elements (11, 12) of said at least one corresponding first pair of the first support (1) in the direction of maintaining contact between each of said fastening elements (21, 22) of the second support (2) and the corresponding attachment element (11, 12) of the first support (1) providing an electronic connection between the first and second supports (1, 2). Figure for the abstract: Fig. 1

Description

System comprising supports provided with connectable and disconnectable electrical or electronic circuit parts

The present invention generally relates to connections between parts of an electric or electronic circuit.

The integration of electrical or electronic devices in certain articles, for example of the clothing type, can be complicated to implement.

In particular in the field of intelligent textiles, also called e-textiles, where it is sought to produce articles, in particular clothing, by integrating electrical or electronic devices which can be sewn into or onto the textile article with common thread, the realization of such an intelligent textile article raises technical difficulties.

Indeed, the textile article must be able to be washed without risk of damaging the associated electrical or electronic device.

Furthermore, the connections between the various parts of the electrical or electronic circuit may be difficult to establish reliably. Similarly, untimely disconnections can be observed when the textile article is stressed by the movements of the person it equips.

The problem of the reliability of the connection between the supports of electrical or electronic circuit parts also arises in other fields, such as the field of lighting.

The object of the present invention is to propose a new system making it possible to overcome all or part of the problems set out above.

To this end, the subject of the invention is an electrical or electronic system comprising:
- a first rigid support, such as an electronic circuit board, comprising a first electrical or electronic circuit part, and at least a first pair of attachment elements, at least one of said attachment elements of said first pair being electrically connected to said first circuit part,
- a second support, such as a strip, elastically extensible, said second support comprising a second electrical or electronic circuit part, and at least a first pair of attachment elements, each attachment element being able to be coupled with one of the attachment elements of the first support, at least one of the said attachment elements of the said at least one first pair of the second support being electrically connected to the said second circuit part,
the first support and the second support being configured to make it possible to electrically connect the first circuit part of the first support with the second circuit part of the second support, by coupling said at least one first pair of attachment elements of the second support with said at least one first pair of attachment elements of the first support,
so that, in the coupled state of said pairs of attachment elements, the attachment elements of said at least one first pair of the second support exert, by the elasticity of the second support, a restoring force on the elements of attachment of said at least one first corresponding pair of the first support in the direction of maintaining contact between each of said attachment elements of the second support and the corresponding attachment element of the first support.

Such a system allows rapid and reliable connection of the two supports with each other, while also allowing rapid disconnection of said supports, for example to replace one support with another, or to remove it, for example the washing time of the article equipped with said system.

The elastic return of the attachment elements of the second support vis-à-vis the attachment elements of the first support, makes it possible to ensure both the mechanical attachment of the second support to the first support, as well as the reliability of the connection. electrical between the corresponding circuit parts.

Such a system makes it possible to obtain a good mechanical and electrical connection between the supports and the circuit parts, which is reliable over time, and this unlike a system which would consist in directly soldering the circuit parts together.

The system may also include one or more of the following features taken in any technically permissible combination.

According to an advantageous characteristic of the invention, the first support comprises a second pair of attachment elements, at least one of said attachment elements of the second pair being electrically conductive and electrically connected to said first circuit part,
said second support comprising a second pair of attachment elements, each attachment element of the second pair being adapted to be coupled with one of the attachment elements of the second pair of the first support,
at least one of said attachment elements of the second pair of the second support being electrically connected to said first circuit part,
the first support and the second support being configured to make it possible to electrically connect the first circuit part of the first support with the second circuit part of the second support, by coupling the first and second pairs of attachment elements of the second support with the first and second pairs of attachment elements of the first support,
so that, in the coupled state of said pairs of fastening elements, the fastening elements of the first and second pairs of the second support exert, by the elasticity of the second support, a restoring force on the elements of attaches corresponding first and second pairs of the first support in the direction of maintaining contact between each of said attachment elements of the second support and the corresponding attachment element of the first support.

According to an advantageous characteristic of the invention, the pair or pairs of attachment elements of the second support forming a first group of pair(s) of attachment elements, the second support also comprises a second group of pair(s) ) of fastening elements, and said system comprises:
a third medium, such as an electronic circuit board, comprising a third electrical or electronic circuit part, and
one or more pairs of attachment elements, at least one of said attachment elements of the or each pair of the third support being electrically connected to the said third circuit part,
the third support and the second support being configured to make it possible to electrically connect the third circuit part of the third support with the second circuit part of the second support, by coupling the second group of pair(s) of attachment elements of the second support with the second group of pair(s) of fastening elements of the third support,
so that, in the coupled state of said pairs of attachment elements, the second group of pair(s) of attachment elements of the second support exerts, by the elasticity of the second support, a return force on said attachment elements of the third support in the direction of maintaining contact between each of said attachment elements of the second group of pair(s) of the second support and the corresponding attachment element of the third support.

According to an advantageous characteristic of the invention, the attachment elements of the or each pair of the second support are spaced from each other in the direction of extensibility of said second support.

According to an advantageous characteristic of the invention, in the uncoupled state of the supports, the distance between the attachment elements of each pair of the second extensible support is less than the distance between the said attachment elements in the coupled state to the elements attachment of the pair of the first support.

According to an advantageous characteristic of the invention, each attachment element of one of the supports is a hook or an orifice configured to cooperate with an orifice, or respectively a hook, of the other or of one of the other supports.

According to an advantageous characteristic of the invention, the attachment elements of the first support, and of the third support when it is present, comprise hooks, and the attachment elements of the second support comprise orifices, preferably presenting themselves under the carnation shape.

According to an advantageous characteristic of the invention, the attachment elements of the first support comprise rails, and the attachment elements of the second support comprise hooks.

According to an advantageous characteristic of the invention, at least one of the pairs of attachment elements of the first support, optionally of the third support when it is present, comprising two hooks, said hooks are oriented in opposite directions to one the other.

According to an advantageous characteristic of the invention, the second circuit part of one of the supports comprises a heating wire which, in the connected state of the support which comprises it, with the other support or one of said other supports , is short-circuited.

According to an advantageous characteristic of the invention, the first support, and possibly the third support when it is present, is or are printed circuit boards, and the second elastically extensible support is a band or ribbon, for example made of elastomer.

Other characteristics and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting and must be read in conjunction with the appended drawings, in which:

is a schematic view of a system according to one embodiment of the invention, which comprises a strip, the circuit part of which comprises an antenna having a track provided with two conductive orifices made through said strip, and a card provided with a microcontroller, one input of which is connected to a connection track which is provided with two conductive hooks;

is a schematic view of a system according to another embodiment of the invention which comprises an elastically extensible strip in its width and provided with an assembly of LEDs in parallel on two tracks equipped with conductive hooks which are in electrical contact with the edge of two orifices which form the terminals of another electronic circuit part provided on a card;

is a schematic view of a system according to another embodiment of the invention, for which the system comprises a plurality of strips each provided with an LED circuit part whose terminals are equipped with two conductive hooks, and a card comprising another electronic circuit part having two conductive rails to which the hooks of each strip can be coupled;

is a schematic view of a system according to another embodiment of the invention, for which the strip comprises an assembly of LEDs in series;

is a schematic view of a system according to another embodiment of the invention, for which the strip comprises an assembly of LEDs in parallel;

is a schematic view of a system according to another embodiment of the invention, for which the strip comprises a heating wire;

is a schematic view of a system according to another embodiment of the invention, for which the system comprises two rigid cards and an elastically extensible band;

is a schematic view of a system according to another embodiment of the invention, comprising a strip and a card in the disconnected state;

is a view of the system of Figure 8 in the connected state of tape and card.

The inventive concept is described more fully below with reference to the accompanying drawings, in which embodiments of the inventive concept are shown. In the drawings, the size and relative sizes of the elements may be exaggerated for purposes of clarity. Like numbers refer to like elements throughout the drawings. However, this concept of the invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. Instead, these embodiments are provided so that this description is complete, and communicates the scope of the inventive concept to those skilled in the art.

Reference throughout the specification to "an embodiment" means that a particular feature, structure, or feature described in connection with an embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrase "in one embodiment" at various places throughout the specification does not necessarily refer to the same embodiment. Further, the particular functionalities, structures, or features may be combined in any suitable manner in one or more embodiments.

Aspects generals

The invention can be implemented for different applications, such as e-textile applications, between a first rigid support 1 and a second elastically extensible support 2, each having a part 10, 20 of an electrical or electronic circuit to form a system which can for example be integrated into an article such as clothing. The rigidity of the first support 1 can result from the fact that the first support 1 is made of a rigid material or is made of a material which is initially flexible but made rigid for example by a mechanical tension applied to the material. In other words, the first support 1 is non-stretchable, non-retractable and non-flexible.

By way of example, the electrical or electronic circuit part of each medium may comprise one or more tracks (for example of the electrical wire or conductive ink type) and one or more electronic components, or simply one or more tracks (for example of electric wire type or conductive ink). The or each track, in particular for the second elastically extensible support 2, can have a sinuous shape, for example zig-zag, that is to say of the sinusoidal type, so as to limit the risk of damage to the track. when said second support 2 is stretched.

The first support 1 can thus be an electronic card (PCB for Printed Circuit Board in English) and the second support 2 can be an elastically extensible tape or strip, for example made of elastomer.

The rest of the description is made with a first support 1 which is a card (or plate) and a second support 2 which is a band. However, the description applies to other formats or types of first rigid support and other formats or types of elastically extensible second supports. By way of example, the first support can also be in the form of a piece of hard nylon or of a box, one or more walls of which would be provided with attachment elements and with a part of an electrical circuit or electronic. The description given below with two supports is also applicable to a greater number of supports, as for example illustrated with the case of FIG. 8 which provides for an additional rigid card.

The band 2 comprises a part 20 of electrical or electronic circuit and attachment elements. The card 1 also comprises a part 10 of an electric or electronic circuit and attachment elements configured to be able to be coupled with the attachment elements of the strip 2 in the stretched state of the strip 2 according to its direction of extensibility. The stretching makes it possible to separate the fastening elements of the strip 2 from each other to make them cooperate with the fastening elements of the card 1.

Thus, as illustrated in particular in the embodiment of FIGS. 8 and 8A, in the unstretched state of the band 2, the distance between the fastening elements of the band 2 is less than the distance between the said fastening elements. attaches in the coupled state with the attachment elements of the card 1 with which said attachment elements of the strip 2 cooperate to form the electrical or electronic circuit.

As illustrated in FIGS. 8 and 8A, in order to be able to couple the fastening elements of the card 1 with those of the strip 2, the operator stretches the strip in its direction of extensibility to increase the gap between the fastening elements of strip 2, which passes from a distance d2 at rest (FIG. 8) to a distance d2', in the connected state of card 1 and strip 2 (FIG. 8A), which is greater than distance d2 , and thus be able to cause them to cooperate with the attachment elements of the card 1 which is rigid.

The fastening elements of the strip 2, which form a pair of elements capable of cooperating with the fastening elements of another pair of the card 1, are spaced apart from each other in the direction of extensibility of the strip 2 .

This direction may correspond to the width of the strip, for example for the embodiments of Figures 2 and 3, or to the length of the strip for example for the other embodiments of Figures 1 and 4 to 8A.

The attachment elements of each pair of map 1 are also separated from each other. According to a particular aspect, the direction of spacing of the attachment elements of each pair of the card is parallel to the direction of extensibility of the strip 2 in the connected state from the strip 2 to the card1.

In the coupled state of the fastening elements of the card 1 and of the strip 2, the fastening elements of the strip 2 exert, due to the elasticity of the strip 2, a return force on the elements of attachment of the card 1 in the direction of maintaining contact between the attachment elements of the strip 2 and the attachment elements of the card 1. This return force makes it possible to ensure good mechanical contact between the strip and the card and thus a good electrical connection between the fastening elements with which the circuit parts of the card 1 and the strip 2 are equipped.

At least one fastening element of the strip 2 is conductive and the fastening element of the card 1 with which the conductive fastening element of the strip 2 is intended to cooperate, is also electrically conductive.

The invention can also be implemented for other applications, such as the lighting of an area, such as a room in a dwelling or the interior of a cupboard, as in the example illustrated in Figure 3.

Fasteners can be of different types. In the example illustrated in Figures 1, 2 and 4 to 8A, each attachment element of one of the supports (card 1 and strip 2) is a hook or an orifice configured to cooperate with an orifice, or respectively a hook, of the other medium or of one of the other mediums. According to a particular aspect, each hook is able to pass through the corresponding orifice to bear against the inside of the edge of the orifice.

For ease of design and good mechanical strength, provision may be made for the card 1 attachment elements to include hooks,
and that the fastening elements of the strip 2 comprise orifices, preferably with a closed outline, preferably in the form of an eyelet as in the examples illustrated in FIGS. 1, 8 and 8A. Thus in the examples of Figures 2 and 4 to 7, provision may be made to exchange the position of the hooks and the orifices.

According to one aspect illustrated in particular in Figures 1, 8 and 8A, when the card 1 is provided with hooks, while the strip 2 is provided with holes, the hooks of a pair of card hooks are oriented in opposite directions. one of the other. In other words, the opening of a hook is oriented in the opposite direction of the other hook, or the free end of a hook is directed in the opposite direction of the other hook.

Alternatively and as illustrated in the examples of Figures 2 to 7, it can be provided that when the hooks are arranged on the strip 2, the hooks of a pair of hooks are oriented towards each other. In other words, the opening of a hook is directed towards the other hook, or the free end of a hook is directed towards the other hook.

As a variant and as illustrated for example in FIG. 3, one or each attachment element of one 1 of the supports 1, 2 can be a rail 11, 12 configured to cooperate with a hook of the other 2 or of a other media.

When a card 1 attachment element is a hook, it can be screwed or welded or even riveted to said card. Screwing and/or welding makes it possible to ensure mechanical strength and electrical continuity when said hook is linked to circuit part 10 of card 1. Each hook can have different shapes, for example a U-shape.

It is understood that the attachment elements which cooperate with each other to form a circuit from the parts 10, 20 of the circuit are conductive.

Embodiment of Figure 1

In the embodiment of FIG. 1, provision is made for the circuit part 20 of strip 2 to comprise an antenna which has an electrical track provided with orifices 21 and 22 provided through strip 2. It could be provided that the one of the holes is not connected to the antenna track. Circuit part 10 of card 1 comprises a control unit 100 (or control unit), for example a microcontroller. Hooks 11, 12 are electrically connected to part 10 of the circuit. In particular, provision can be made for the hooks 11, 12 to be connected by a conductive track to an input of the microcontroller. Provision may be made for one of the hooks not to be electrically linked to said part 10 of the circuit.

The operator can thus connect strip 2 to card 1 to connect the antenna to the microcontroller by stretching the strip to separate the holes 21, 22 in order to thread them onto the hooks 11, 12, which makes it possible to ensure the connection mechanical and electrical circuit parts 10, 20 of card 1 and strip 20.

According to a variant embodiment not shown, the circuit part 20 can be a simple track connected or intended to be connected to the earth to allow earthing of the circuit part 10 of the card using the strip 20.

Embodiment of Figure 2

In the example illustrated in FIG. 2, the circuit part 20 of strip 2 comprises LEDs mounted in parallel on two tracks 210, 230. Each track is provided, preferably at one end, with hooks 21, 22 conductors.

The circuit part 10 of the card 1 comprises a system for supplying the LEDs of the circuit part 20 of the strip 2. This supply system comprises a power source 101, an impedance matching device 102 and possibly a control unit 103, which can be formed by a microprocessor or microcontroller.

The card 1 also includes holes 11, 12 conductors electrically connected to the part 10 of the circuit.

The strip 2 can thus, by pulling on its width to move the hooks apart, be connected to the card 1 by cooperation of the hooks 21, 22 with the orifices 11, 12.

Embodiment of Figure 3

The embodiment of FIG. 3 takes up some of the elements of the embodiment of FIG. 2, but provides rails 11, 12 conductors instead of the conductor holes of the card 1. Furthermore, there are several strips 2 each comprising a circuit of LEDs fitted with conductive hooks. Each strip 2 can, by pulling its width, be connected to the card 1 by cooperation of the hooks with the rails.

Embodiment of Figure 4

In the embodiment of FIG. 4, card 1 comprises a circuit part 10 which is for example an LED power supply system, and which may be similar to that of FIG. 2 or 3. Card 1 comprises a first pair of orifices 11, 12, at least one of which is electrically conductive and electrically connected to said part 10 of the circuit. The card 1 also includes a second pair of holes 13, 14, at least one of which is electrically conductive and electrically connected to said part 10 of the circuit.

The strip 2 comprises a circuit part 20 which is for example an assembly of LEDs in series. The strip 2 also comprises a first pair of hooks 21, 22, at least one of which is electrically conductive and electrically connected to the end portion 210 of the LED track of said part 20 of the circuit. The strip 2 also comprises a second pair of hooks 23, 24, at least one of which is electrically conductive and electrically connected to the end portion 230 of the LED track of said part 20 of the circuit.

Strip 2 can be connected to card 1 by pulling strip 2 to bring hooks 21, 22 through and into contact with holes 11, 12 of card 1, and hooks 23, 24 through and into contact with the holes 13, 14 of the card 1 in order to obtain good mechanical and electrical support between the strip 2 and the card 1 by recalling the hooks against the holes.

The pair of hooks 21, 22 of the strip 2 is electrically connected to the terminal 210 of the circuit part 20, and the other pair of hooks 23, 24 is electrically connected to the other terminal 230 of the circuit part 20 . Port 11 of the pair of ports 11, 12 of card 1 is electrically connected to a terminal of circuit part 10, and port 13 of the other pair of ports 13, 14 is electrically connected to another terminal of the circuit part 10. The other holes 12, 14 may or may not be electrically conductive.

Thus according to embodiments, the two hooks of a pair are electrically connected to each other. As a variant, provision can be made for only the hooks 21, 23 which ensure the electrical connection with the orifices 11, 13 to be electrically conductive and connected to the terminals 210, 230. Thus, the other hooks 22, 24 which provide the mechanical retention between the card 2 and strip 1 may not be electrically conductive or may not be connected to terminals 210, 230.

Provision can also be made for the orifices 11,12 to be electrically connected to each other, so that in this case one of the hooks 21, 22 may not be conductive and/or not be electrically connected to the terminal 210, the continuity electrical being ensured by the other conductive hook and the corresponding conductive orifice. Similarly, it is also possible to provide for the orifices 13,14 to be electrically connected to each other, so that in this case the hook 23 or 24 may not be conductive and/or not be electrically connected to the terminal 230.

These various possibilities of realization concerning the hooks and the orifices are also applicable to the other embodiments of FIGS. 5 to 8A, the principle remaining of preserving a mechanical connection of the strip and of the card and an electrical connection between the circuit parts, with return of the fastening elements of the band against the fastening elements of the card.

Embodiment of Figure 5

The embodiment of Figure 5 differs from the embodiment of Figure 4 in that the circuit part 20 is an assembly of LEDs in parallel on two tracks which form the connection terminals 210 and 230.

Embodiment of Figure 6

According to an embodiment illustrated in particular in FIG. 6, the circuit part 10 comprises a power source 101 and preferably a circuit control unit 105 which comprises for example a microcontroller. The circuit part 20 of the strip 2 comprises a heating system which, in the connected state of the support 2 which comprises it, with the other support 1, is short-circuited. The heating system is in the form of a wire (or track) which is provided with resistor(s) and which has two electrical portions 210, 230 forming the connection terminals to the circuit part 10 of the card 1.

Strip 2 has hooks 21, 22 and 23, 24. Card 1 has holes 11, 12 and 13,14. The holes 12,14 made at the edge of the card are in the form of notches (for example of semi-circular shape).

A pair of hooks 21, 22 of strip 2 is electrically connected to one 210 of the two terminals of the heating system, and another pair of hooks 23, 24 is electrically connected to the other electrical terminal 230.

Embodiment of Figure 7

The embodiment of Figure 7 uses the principle of connecting card 1 and strip 2 of the embodiments of Figures 4 to 6 by adding an additional rigid card 1'.

Band 2 also comprises a second group of pairs of hooks 21', 22', 23', 24' connected, similarly to the first group of hooks 21, 22, 23, 24 to tracks 210, 230 of band 2 distinct. This first group of hooks 21, 22, 23, 24 cooperates with the orifices 11, 12, 13, 14 of the card 1 just as the second group of pairs of hooks 21', 22', 23', 24' cooperates with the orifices 11', 12', 13', 14' of the card 1'.

Thus in the coupled state of said pairs of fastening elements, as for the first group of pairs of hooks 21, 22, 23, 24 of the strip 2 which cooperates with the orifices 11, 12, 13, 14 of the card 1, the second group of pairs of hooks 21', 22', 23', 24' of the strip exerts, by the elasticity of the strip 2,
a restoring force on said orifices 11', 12', 13', 14' of card 1' in the direction of maintaining electrical and/or mechanical contact.

Aspects individuals

When a part of the circuit includes a control unit, this may take the form of a processor and a data memory in which computer instructions that can be executed by said processor are stored, or even in the form of a a microcontroller.

In particular, the functions operated by the unit can be performed by instruction sets or computer modules implemented in a processor or controller or be performed by dedicated electronic components or components of the FPGA or ASIC type. It is also possible to combine computer parts and electronic parts.

The invention is not limited to the embodiments illustrated in the drawings.

Further, the term "comprising" does not exclude other elements or steps. Furthermore, features or steps that have been described with reference to one of the embodiments set forth above may also be used in combination with other features or steps of other embodiments set forth above.

Claims (11)

Electrical or electronic system comprising:
- a first rigid support (1), such as an electronic circuit board, comprising:
a first part (10) of electric or electronic circuit, and
at least a first pair of attachment elements (11, 12), at least (11) one of said attachment elements of said first pair being electrically connected to said first circuit part (10),
- a second support (2), such as a band, elastically extensible,
said second support (2) comprising:
a second part (20) of electric or electronic circuit, and
at least a first pair of attachment elements (21, 22), each attachment element (21, 22) being able to be coupled with one of the attachment elements (11, 12) of the first support (1) , at least one (21) of said attachment elements (21, 22) of said at least a first pair of the second support (2) being electrically connected to said second circuit part (20),
the first support (1) and the second support (2) being configured to make it possible to electrically connect the first part (10) of the circuit of the first support (1) with the second part (20) of the circuit of the second support (2), by coupling said at least one first pair of attachment elements (21, 22) of the second support (2) with said at least one first pair of attachment elements (11, 12) of the first support (1) ,
so that, in the coupled state of said pairs of attachment elements, the attachment elements (21, 22) of said at least one first pair of the second support (2) exert by the elasticity of the second support ( 2), a return force on the attachment elements (11, 12) of said at least one corresponding first pair of the first support (1) in the direction of maintaining contact between each of said attachment elements (21 , 22) of the second support (2) and the corresponding attachment element (11, 12) of the first support (1). System according to Claim 1, characterized in that the first support (1) comprises a second pair of attachment elements (13, 14), at least one (13) of the said attachment elements of the second pair being electrically conductive and electrically connected to said first circuit part (10),
said second support (2) comprising:
a second pair of attachment elements (23, 24), each attachment element of the second pair being able to be coupled with one of the attachment elements (13, 14) of the second pair of the first support (1 ),
at least one (23) of said attachment elements (23, 24) of the second pair of the second support (2) being electrically connected to said first circuit part (10),
the first support (1) and the second support (2) being configured to make it possible to electrically connect the first part (10) of the circuit of the first support (1) with the second part (20) of the circuit of the second support (2), by coupling the first and second pairs of attachment elements (21, 22, 23, 24) of the second support (2) with the first and second pairs of attachment elements (11, 12, 13, 14) of the first support (1),
so that, in the coupled state of said pairs of fastening elements, the fastening elements (21, 22, 23, 24) of the first and second pairs of the second support (2) exert, by the elasticity of the second support (2), a return force on the attachment elements (11, 12, 13, 14) of the first and second corresponding pairs of the first support (1) in the direction of maintaining contact between each of said elements attachment (21, 22, 23, 24) of the second support (2) and the corresponding attachment element (11, 12, 13, 14) of the first support (1). System according to one of the preceding claims, characterized in that the pair or pairs of attachment elements (21, 22, 23, 24) of the second support (2) forming a first group of pair(s) of attachment elements, the second support (2) also comprises a second group of pair(s) of attachment elements (21', 22', 23', 24'),
and in that said system comprises a third support (1'), such as an electronic circuit board, comprising a third electrical or electronic circuit part (10'), and one or more pairs of attachment elements ( 11', 12', 13', 14'), at least one (11', 13') of said attachment elements of the or each pair of the third support (1') being electrically connected to said third part (10') circuit,
the third support (1') and the second support (2) being configured to make it possible to electrically connect the third part (10') of the circuit of the third support (1') with the second part (20) of the circuit of the second support ( 2), by coupling the second group of pair(s) of attachment elements (21', 22', 23', 24') of the second support (2) with the second group of pair(s) of elements attachment (11', 12', 13', 14') of the third support (1'),
so that, in the coupled state of said pairs of fastening elements, the second group of pair(s) of fastening elements (21', 22', 23', 24') of the second support (2 ) exerts, by the elasticity of the second support (2),
a return force on said attachment elements (11', 12', 13', 14') of the third support (1') in the direction of maintaining contact between each of said attachment elements (21', 22', 23', 24') of the second group of pair(s) of the second support (2) and the corresponding attachment element (11', 12', 13', 14') of the third support (1' ). System according to one of the preceding claims, characterized in that the attachment elements of the or each pair of the second support (2) are spaced apart (21, 23) from each other (22, 24) according to the direction of extensibility of said second support (2). System according to one of the preceding claims, characterized in that, in the uncoupled state of the supports (1, 2), the distance between the attachment elements (21, 23, 22, 24) of each pair of the second support (2) extensible is less than the distance between said attachment elements (21, 23, 22, 24) in the state coupled to the attachment elements (11, 13, 12,14) of the pair of the first support ( 1). System according to one of the preceding claims, characterized in that each attachment element of one (1) of the supports (1, 2) is a hook or an orifice configured to cooperate with an orifice, or respectively a hook, of the other (2) or one of the other supports. System according to one of the preceding claims, characterized in that the attachment elements of the first support (1), and of the third support (1') when it is present, comprise hooks,
and in that the attachment elements of the second support (2) comprise orifices, preferably in the form of an eyelet. System according to one of the preceding claims, characterized in that the attachment elements (11, 12) of the first support (1) comprise rails,
and in that the attachment elements (21, 22) of the second support (2) comprise hooks. System according to one of the preceding claims, characterized in that, at least one of the pairs of attachment elements of the first support (1), and optionally of the third support (1') when it is present, comprising two hooks, said hooks are oriented in opposite directions to each other. System according to one of the preceding claims, characterized in that the second circuit part (20) of one (2) of the supports (1, 2) comprises a heating wire which, in the connected state of the support ( 2) which comprises it, with the other support (1) or one of said other supports, is short-circuited. System according to one of the preceding claims, characterized in that the first support (1), and optionally the third support (1') when it is present, is or are printed circuit boards,
and in that the elastically extensible second support (2) is a band or ribbon, for example made of elastomer.