CN115943729A

CN115943729A - Sheet assembly with electrical coupling elements

Info

Publication number: CN115943729A
Application number: CN202280002541.0A
Authority: CN
Inventors: B·雷尔; F·赫尔曼格; H·拉斯特加
Original assignee: Saint Gobain Glass France SAS
Current assignee: Saint Gobain Glass France SAS
Priority date: 2021-06-08
Filing date: 2022-05-19
Publication date: 2023-04-07
Also published as: WO2022258342A1; DE202022002807U1

Abstract

The invention relates to a sheet material arrangement (100) having at least one electrical coupling element (14), wherein the coupling element (14) comprises a first push button part (7) having a coupling region (11) for connection to an electrical coupling cable (8), and a complementary second push button part (1) which is provided for connection to the first push button part (7) and to a partial region of an electrically conductive structure (9), and a sheathing (15) for sealing, wherein the sheathing (15) is firmly connected to a substrate (17) via an adhesive layer (16).

Description

Sheet assembly with electrical coupling elements

Technical Field

The invention relates to a sheet assembly with an electrical coupling element, a method for manufacturing a sheet assembly and a use of a sheet assembly for a carrier.

Background

The sheet material arrangement comprises a sheet material with an electrically conductive structure (e.g. film conductor, heating conductor, antenna conductor) and a functional element and/or an electrically conductive coating with a bus conductor. The electrically conductive structure is typically connected to the on-board electrical system of the vehicle via soldered electrical coupling elements. The thin-film conductor serves as a lead for contacting the electrically conductive elements in the interior of the composite sheet.

Composite sheets composed of two or more glass or polymer sheets are used in buildings, furniture or vehicles, in particular as windshields, rear windows, side windows and roof sheets. Such composite sheets have an electrical heating layer consisting of a transparent, electrically conductive coating on the inner surface of the individual sheets or functional elements embedded in an intermediate layer between the individual sheets.

Electrical coupling elements designed as push buttons are known for example from WO 2010/012872 A1, WO 2013/182394 A1, US 6249966 B1 and US 20070224842 A1. Such a coupling element enables a comfortable coupling to the on-board electrical system. In US 20070224842 A1 it is proposed to make the coupling element from titanium. However, titanium is difficult to braze. This results in poor adhesion of the coupling element at the sheet. Titanium is furthermore very expensive, which leads to a higher price of the coupling element.

A coupling assembly with a mounting ring is known from EP2819178 A2.

In the motor vehicle sector, in particular, such connections should ensure a defect-free transmission of electrical power, signals and data permanently despite moist or contaminated surroundings. Additionally, a permanent mechanical connection between the electrical coupling element and the vehicle electrical system is to be established.

Disclosure of Invention

It is an object of the present invention to provide an improved sheet material assembly with at least one electrical coupling element, in which particularly the coupling element is protected against moisture.

According to the invention, the object of the invention is achieved by a sheet assembly according to claim 1. Preferred embodiments emerge from the dependent claims.

The sheet metal component with at least one electrical coupling element according to the invention comprises a substrate, an electrically conductive structure on a region of the substrate, an electrically conductive coupling element in the form of a button, and a means which connects the coupling element in an electrically conductive manner at least with a partial region of the electrically conductive structure. The coupling element comprises a first, in particular female, push-button part having a coupling region for connection to an electrical coupling cable and a complementary, in particular male, second push-button part which is provided for connection to the first push-button part and is connected to a partial region of the electrically conductive structure. The coupling element furthermore has a sheathing for sealing, wherein the sheathing is firmly connected to the substrate via an adhesive layer. A sheathing is also understood to mean an encapsulation of the coupling element.

It is ensured by the sheathing that no moisture or dirt can penetrate into the interior of the sheathing and damage the electrical connection elements. For this purpose, the coupling element is covered by a sheathing in a waterproof manner. Thus, the coupling element is protected from moisture. Such an assembly allows applications with voltages up to 150 volts, in particular alternating voltages. This is particularly advantageous in sheet assemblies having a heating function or for operating functional elements, such as for example PDLC functional elements (polymer dispersed liquid crystal), SPD functional elements (suspended particle devices) or electrochromic functional elements.

The sheath is preferably constructed from plastic. The sheath is preferably produced by injection moulding. It may be constructed from a single homogeneous material composition. For example, the jacket comprises or consists of Polycarbonate (PC), polyethylene (PE), polymethyl methacrylate (PMMA), polypropylene (PP), polystyrene, polybutadiene, polynitrile, polyester, polyurethane, polyacrylate, polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT).

In an advantageous embodiment of the invention, the sheath is designed in such a way that it has a base part in which the coupling element is arranged and an upper part in which the coupling cable and/or the cable core of the coupling cable is arranged. The base part and the upper part each have a circumferential side wall. The base component has a larger jacket circumference than the upper component. In other words, the upper part may have a smaller base surface than the base part, wherein the upper part is arranged above the base part. The upper member may also be referred to as a protuberance protruding from the base member. The sheath can have a generally rectangular, in particular square, base surface.

The adhesion layer causes adhesion between the jacket and the substrate. The sheath is permanently and stably fixed to the surface of the substrate by means of the adhesive layer. In addition, the adhesive layer acts as a seal in order to seal the coupling element in a watertight manner in the interior of the sheathing. In a preferred embodiment, the adhesive layer can be designed as a double-sided adhesive tape, in particular as an adhesive film (Klebefilm). The adhesive strip brings about particularly simple handling of the sheathing during the production of the sheet material arrangement and good adhesion of the sheathing to the substrate. Alternatively, the attachment layer may comprise an acrylic-based adhesive. The adhesive brings about particularly good adhesion. The attachment layer may also comprise other suitable materials that facilitate attachment, such as polyurethane or epoxy. The adhesion layer may have a thickness of 50 to 250 μm (micrometers). Thereby, a good adhesion effect is obtained without increasing the total height of the capsule too much.

Substantially all electrically insulating substrates that are thermally and chemically and dimensionally stable under the conditions of manufacture and use of the sheet assembly are suitable as substrates. The substrate may be protected from moisture and corrosion by a water repellent coating. The substrate comprises or consists of glass (particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda lime glass) or a transparent plastic, preferably a rigid transparent plastic (in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and/or mixtures thereof). Preferably, the substrate is made of glass. The substrate is preferably transparent, especially for use of the sheet assembly as a wind or rear window sheet for a vehicle or other use where higher light transmission is desired. A transmission in the visible spectral range of more than 70% is understood as transparent in the sense of the present invention. But for carrier sheets not located in the driver's traffic-related field of view, e.g. for top sheets, the transmission may also be much lower, e.g. greater than 5%. The substrate may be colorless or colored. The substrate is preferably configured as a sheet. The sheets of the sheet assembly preferably consist of soda-lime glass which is thermally pre-tensioned.

According to an advantageous embodiment, the sheath has an opening for introducing the connection cable. In this way, the exposed region of the cable core of the connection cable which projects into the sheath can be protected from weather and touch. Preferably, the opening is arranged at a base part of the capsule and/or at an upper part of the capsule, in particular at a side wall of the capsule. Furthermore, a collar section is preferably provided at the opening of the sheath, which collar section is provided for sealing the opening and for introducing the connection cable or the cable core thereof into the sheath. Furthermore, the opening has a cross section, in particular a circular cross section, the diameter of which corresponds to the circumference of the coupling cable, in particular a coupling cable configured as a circular cable.

In a further advantageous embodiment, the connecting region of the, in particular female, first button part is designed as an electrically conductive cover which is firmly connected to the first button part. The electrically conductive cover is connected to the at least one cable core of the connection cable, so that the connection cable is electrically conductively connected to the first button part via the electrically conductive cover. The cover is preferably metallic. The connection between the at least one core of the connection cable and the connection region may be a soldered connection, a welded connection, a riveted connection or a crimped connection (Krimpverbindung). In the case of a soldered connection, the solder paste (Lotmase) may contain tin and bismuth, indium, zinc, copper or combinations thereof. The coupling region of the (female) first push-button part can be of annular design and/or have a plate-like region. The cable core of the coupling cable may be arranged radially at the coupling region, in particular at the plate-shaped region, of the first button part. For this purpose, the cable core may be arranged on the cover.

The second pushbutton part has at least one contact surface via which the coupling element is connected over the entire surface with a partial region of the electrically conductive structure, preferably by means of a solder compound. The contact surface preferably has no corners. For example, the contact surface may have an oval, elliptical, or circular shape. Alternatively, however, the contact surface may also have a convex polygonal shape, preferably a rectangular shape with rounded corners. The rounded corners have a radius of curvature of r > 0.5mm (millimeters), preferably r > 1mm.

The coupling element comprises a first button part and a complementary second button part. In other words, the two button members are opposed, but have complementary properties. The second button part is designed as a part which interacts complementarily with the first button part. In a further advantageous embodiment, the first button part can be designed as a female part and the second button part as a male button part. Alternatively, the first button part may also be configured as a male part, while the second button part may be configured as a female button part. Furthermore, the first button part can be snapped onto the second button part by means of a spring element or a lip.

According to the invention, the coupling element is configured as a push button. In this way, the electrically conductive structure of the sheet assembly can be connected to an external voltage source in a simple and comfortable manner.

The coupling element is preferably 2mm to 20mm long and wide, particularly preferably 5mm to 12mm and very particularly preferably 8.1mm or 10mm.

The sheet assembly has a means for electrically conductively connecting the connecting element to at least a partial region of the electrically conductive structure. For example, the shape of the electrical coupling element may have a solder reservoir (Lotdepot) in the intermediate space of the coupling element and the electrically conductive structure. The electrical connection of the electrically connecting element and the electrically conductive structure is preferably carried out by means of a die, a hot electrode (thermolode), soldering iron, preferably laser soldering, hot air soldering, induction soldering, resistance soldering and/or by means of ultrasound. Alternatively, the coupling element can be connected to the electrically conductive structure by means of an electrically conductive adhesive via a soldered or adhesive connection.

According to one variant of the sheet material arrangement, the substrate can have two or four electrically conductive coupling elements which are configured as push buttons and are arranged at a distance from one another at the substrate. Thereby, a plurality of electrical structures can be contacted in a simple manner.

For example, the electrically conductive, in particular printed, structure may contain silver, tin, gold and/or copper. The structure can be constructed as a layer with copper, silver or gold foil or tape or as a current bus bar (busbar). The current bar can be designed as an adhesive bar or can be fastened to the functional element or the conductive coating using a double-sided conductive adhesive strip. Furthermore, the electrically conductive structure can be designed as a flexible, thin film conductor or as a flat conductor, i.e. as a strip of an electrically conductive film (e.g. copper foil, in particular tin-plated copper foil). Furthermore, the electrically conductive structure may be configured as one or more metal lines.

In a further preferred embodiment, the sheet material arrangement according to the invention has a composite sheet material. The composite sheet comprises a substrate connected to a second substrate via an intermediate layer into a composite sheet. Preferably, the two substrates are sheet-shaped and are connected in an areal manner by lamination via an intermediate layer located between them.

Substantially all electrically insulating substrates that are thermally and chemically and dimensionally stable under the conditions of manufacture and use of the composite sheet are suitable as the first and second substrates. The first and/or second substrate may be protected from moisture and corrosion by a water repellent coating.

The thickness of the two substrates can vary widely and thus can be adapted excellently to the requirements of the individual case. Preferably, a standard thickness of 1.0mm to 25mm is used, preferably 1.4mm to 2.5mm for carrier glass, and 4mm to 25mm for furniture, appliances and buildings. The size of the substrate configured as a sheet may vary widely and depends on the size of the use according to the invention. The first and second substrates are for example of the type commonly found in the field of vehicle construction and construction, with a width of 200cm ² To 20m ² The area of (c).

The composite sheet may have any three-dimensional shape. The three-dimensional shape preferably has no shadow zones, so that the three-dimensional shape can be coated with a further coating, for example by cathodic sputtering. Preferably, the substrate, in particular the sheet, is planar or slightly or strongly curved in one or more directions in space. In particular, a planar substrate is used. The sheet may be clear or colored.

In the case of a composite sheet, the first and second substrates are connected to each other by at least the intermediate layer. The intermediate layer is preferably transparent or tinted or colored. The intermediate layer preferably comprises or consists of at least one plastic, preferably polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA) and/or polyethylene terephthalate (PET). The intermediate layer may, however, also comprise, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resins, casting resins, acrylates, fluorinated ethylene-propylene, polyvinyl fluoride and/or ethylene-tetrafluoroethylene or copolymers or mixtures thereof. The intermediate layer can be formed by one film or by a plurality of films arranged one above the other, wherein the thickness of the films is preferably 0.025mm to 1mm, typically 0.38mm or 0.76mm. The intermediate layer may preferably be thermoplastic and after lamination the first substrate, the second substrate and possibly further intermediate layers may be bonded to each other. A so-called acoustically damping interlayer, preferably consisting of three laminated layers PVB, is particularly advantageous, wherein the intermediate laminate is constructed softer than the two outer laminates.

The intermediate layer may also have functional layers, in particular an infrared radiation reflecting layer, an infrared radiation absorbing layer, a UV radiation absorbing layer, an at least partially pigmented layer and/or an at least partially dyed layer. The thermoplastic intermediate layer can thus also be a belt filter, for example.

The terms "first substrate" and "second substrate" are chosen to distinguish the two substrates in the composite sheet according to the invention. The terms are not relevant to the description regarding the geometrical arrangement. If the composite sheet according to the invention is for example provided for separating an interior space from an exterior environment in an opening of for example a vehicle or a building, the first sheet may face the interior space or the exterior environment.

Furthermore, the first substrate and/or the second substrate may have further suitable coatings, such as an anti-reflection coating, an anti-adhesion coating, an anti-scratch coating, a photocatalytic coating, a sun protection coating and/or a Low-E coating.

Furthermore, the sheet assembly may optionally comprise further functional elements, in particular electronically controllable optical elements, such as PDLC elements, electrochromic elements, etc., which are typically arranged between the first substrate and the second substrate. The functional elements are electrically contacted via bus bars (current bus bars, also called busbars) which are electrically connected to the foil conductors. The thin film conductor is led out beyond the edge of the composite sheet and fixed at the outer side surface of one of the two substrates. The outer side surface of the substrate is the surface of the substrate facing away from the intermediate layer. One end of the foil conductor can be connected to the bus bar, and the foil conductor has a preferably male second button part of the coupling element at the other end.

The electrical leads to the functional elements or the cover can be realized via flexible, thin film conductors or flat conductors, i.e. strips of a thin film that is electrically conductive (e.g. copper foil, in particular tin-plated copper foil). Other conductive materials that can be processed into thin films may also be used. Examples of this are aluminum, gold, silver or tin and alloys thereof. For example, the thin film conductor is generally 0.03mm to 0.2mm in thickness and 2mm to 60mm in width, for example. The film conductor is particularly suitable for use in internal functional elements, since it can be simply guided out of the composite sheet due to its low height extension. The thin-film conductors are led out between the individual sheets beyond the edge of the composite sheet and are fixed at the outer side surface of one of the two substrates. The thin-film conductor or the flat conductor has an insulation made of a polymeric material, wherein alternatively, but also for example, ceramic or glass can be considered. Suitable polymeric insulating materials are, for example, polyethylene, polyimide, polyvinyl chloride, polytetrafluoroethylene, polyester, epoxy, polyurethane resin or silicone elastomers. The typical thickness of the insulator is 0.01mm to 0.1mm.

The first substrate and the second substrate are laminated to each other via an intermediate layer, for example by an autoclave process, a vacuum bag process, a vacuum ring process, a calendering process, a vacuum laminator, or a combination thereof. The joining of the substrates is usually carried out here under the influence of heat, vacuum and/or pressure.

The sheet assembly according to the invention is suitable for all vehicles, such as motor vehicles, trains, ships or air vehicles. Examples for suitable motor vehicles are buses, tractors, trucks and passenger cars, of which passenger cars are particularly preferred.

The invention also relates to a vehicle comprising at least one sheet assembly according to the invention, wherein the vehicle is preferably a motor vehicle.

The invention also relates to a method for producing a sheet material arrangement according to the invention, wherein the coupling element is wrapped with a sheathing and the sheathing is firmly connected to the substrate via an adhesive layer.

Furthermore, the invention includes the use of the sheet assembly according to the invention in a vehicle for land, air or water traffic, in particular in a motor vehicle, for example as a top sheet and/or a wind shield sheet.

All embodiments mentioned for the individual features can also be freely combined with one another within the scope of the invention, provided that they are not contradictory.

Drawings

The invention is explained in more detail below with the aid of figures and examples. The figures are schematic illustrations and are not to scale. The drawings are not intended to limit the invention in any way.

Wherein:

fig. 1 shows a schematic cross-sectional view through a (male) second button member, which co-acts with the (female) first button member shown in fig. 2,

figure 2 shows a perspective view of the coupling element as a push button in an open view,

figure 3 shows a schematic view of the coupling element in a closed view,

figure 4 shows a schematic illustration of a design of a coupling element with a jacket,

figure 5 shows a schematic view of an embodiment of a sheet assembly according to the invention,

figure 6 shows a schematic view of a plurality of coupling elements with a jacket,

fig. 7a shows an embodiment of a sheet assembly according to the invention, wherein the opening a of the capsule is arranged centrally,

fig. 7B shows an embodiment of the sheet assembly according to the invention, wherein the opening B of the jacket is at the side wall,

FIG. 7C shows another embodiment of a sheet assembly according to the invention, wherein the opening C of the jacket is at the side wall, and

figure 8 shows a schematic side view of a sheet assembly according to the invention.

Detailed Description

Descriptions with numerical values should generally not be understood as precise values, but also include tolerances of +/-1% to +/-10%.

Fig. 1 shows a schematic cross-sectional view through a (e.g. male) second button member 1. The male button part 1 comprises a base plate 2 and a connecting element 3. The male button member 1 is composed of steel. It may have an undepicted silver coating, for example having a thickness of about 5 μm.

The base plate 2 has a circular shape in plan view. The base plate 2 has a circular hole 4 in the middle. The outer edge of the base plate 2 is bent in a U-shape. As a result, receptacles 5 for the connecting elements 3 are formed in the edge region of the base plate 2. The curved edge region of the base plate 3 can be designed circumferentially or discontinuously. The base plate 2 is embodied flat, except in the edge region for the curved region.

The flat surface of the bottom plate 2 forms a contact surface 6. The contact surface faces the substrate for contact. The male button part 1 can be connected to a partial region of the electrically conductive structure via the contact surface by means of a solder compound 10 over the entire surface. The contact surface 6 has a circular shape and a uniform layer of flux material 10. The base plate 2 has a material thickness of, for example, about 0.2mm or 0.3mm. The circular outer edge of the base plate 2 has a diameter of, for example, approximately 8 mm. The circular hole in the middle of the bottom plate 2 has a diameter of, for example, about 1mm.

The connecting element 3 has the shape of a hollow cylinder, which is arranged substantially perpendicular to the surface of the base. The foot region at the outer edge of the connecting element 3 is bent outward and extends away from the hollow cylinder approximately parallel to the contact surface 6. This so-called foot region of the connecting element 3 is inserted into a receptacle 5 formed by the bent edge region of the base plate 2. The connecting element 3 is thereby permanently firmly connected to the base plate 2. The wall of the hollow cylinder is realized by a substantially U-shaped bend in the connecting element 3, wherein the radius of the U-shaped bend is for example 0.3mm (millimeter). The hollow cylinder has an outer diameter of, for example, about 5.7mm and an inner diameter of, for example, about 3.5mm. The material thickness of the connecting element 3 is for example about 0.3mm. The height of the connecting element 3 is for example about 3.5mm.

The second button member 1 is arranged and adapted to be connected to a female first button member 7 as shown in fig. 2. For this purpose, the female button part 7 is plugged onto the connecting element 3. The outer wall of the hollow cylinder is not directed perpendicularly away from the base but at an angle of, for example, approximately 3 ° to the vertical, so that the diameter of the connecting element 3 increases slightly with increasing distance from the base plate 2. Thereby preventing unintentional slipping of the inserted female button element 7.

Fig. 2 shows a perspective view of a schematic representation of a coupling element 14 (shown in fig. 3) as a push button in the open position, with a first push button part 7, for example female, and a second push button part 1, male, on the electrically conductive structure 9. The electrically conductive structure 9 is configured, for example, as a thin-film conductor or a flat conductor. The thin-film conductor has a strip of a conductive thin film (e.g., tin-plated copper foil) and an insulator composed of a polymeric material. The region of the film conductor is connected to the male button part 1 after partial removal of the insulation (insulation sheath), for example by riveting, welding or via a solder compound 10. The male button part 1 is connected over its entire surface to the electrically conductive structure 9 via the contact surface 6 by means of a solder compound 10. The thin film conductor may be bonded to the outer surface of the substrate 17. The adhesive used for the adhesive layer is in particular a self-adhesive which is applied by the manufacturer of the film conductor to the corresponding surface area of the film conductor and is protected by a removable film.

Substrate 17 may be protected from moisture and corrosion by a water repellent coating. The substrate 17 comprises or consists of glass. The substrate is preferably transparent, especially for use of the sheet assembly as a wind or rear window sheet for a vehicle or other use where higher light transmission is desired.

The female button part 7 may comprise a spring element which exerts a pressure on the outer wall of the connecting part 3. If the diameter of the connecting element 3 becomes larger at least in a partial region of its height as the distance from the base plate 2 of the male second push-button part 1 increases, the female push-button part 7 can advantageously snap onto the male second push-button part 1, for example by means of a spring element or a lip. The female button part 7 has a coupling region 11 for connection with the electrical coupling cable 8. The connection cable 8 is configured as a circular cable and connects the connection element to an external voltage source. The connection cable 8 has a cable sheath 8.2 and a cable core 8.1. The cable sheath 8.2 is at least partially removed at the end section of the coupling cable 8, so that the cable core 8.1 is connected with the coupling region 11, for example by riveting, welding, crimping or via a solder layer 13.

Fig. 3 shows a schematic illustration of the coupling element 14 in the closed position without the sheath. The coupling element 14 is configured as a push button 12. The push button 12 comprises a female first push button part 7 having a coupling region 11 for connection with the electrical coupling cable 8, and a complementary, in particular male, second push button part 1. The two

button members

1 and 7 are configured to engage each other in a complementary manner. The male button part 1 is electrically conductively connected to an electrically conductive structure 9. The coupling region 11 of the female button element 7 is designed as an electrically conductive cover, in particular a metal cover, via which at least the cable core 8.1 of the coupling cable 8 can be electrically conductively connected to the female button element 7. For this purpose, the cable core 8.1 is arranged on the cover, i.e. the cable core 8.1 is arranged at the surface of the coupling region 11 facing away from the male button part 1. The connection region 11 has a base surface of plate-like design, at which the cable core 8.1 is electrically conductively connected to the cover. In this way, an electrical connection between the electrically conductive structure 9 and an external voltage source can be established very easily and comfortably.

Fig. 4 shows a schematic illustration of the design of the coupling element 14 from fig. 2 with a sheath in an open position. The coupling element 14 comprises a female button part 7 and a male button part 1 which is provided for connection with a partial region of the electrically conductive structure 9. The coupling element 14 furthermore has a covering 15 for sealing. The sheath 15 is made of plastic. The sheath 15 is produced by injection moulding. It may be constructed from a single homogeneous material composition. The sheath 15 consists, for example, of polyamide.

The jacket 15 comprises a base part 15.1, in which the coupling element 14 can be arranged or is arranged, and an upper part 15.2, in which the coupling cable 8 and its cable core 8.1 are arranged. The base part 15.1 and the upper part 15.2 each have a circumferential side wall 15.3. The base part 15.1 has a larger circumference than the upper part 15.2 of the jacket 15. The upper part 15.2 has a smaller base surface than the base part 15.1 of the capsule 15. The upper part 15.2 is arranged above the base part 15.1. The upper part 15.2 is configured as a bulge protruding from the base part 15.1. The sheath 15 has a rectangular, approximately square base surface.

The sheath 15 has an opening 18, through which the connection cable 8 is introduced into the sheath 15. Thereby, the exposed area of the cable core 8.2 of the connection cable 8 can be protected from weather and touch. The opening 18 is arranged at the upper part 15.2 at the side wall 15.3 of the capsule 15. Furthermore, a collar section 19 is provided as a collar at the opening 18, which collar section is provided for sealing the opening 18 and for passing the connection cable 8 into the sheath 15.

Fig. 5 shows a schematic view of an embodiment of a sheet assembly 100 according to the present invention. The sheet assembly 100 comprises a coupling element 14 with a sheathing 15 and a substrate 17 with an electrically conductive structure 9. The coupling element 14 comprises a female first pushbutton part 7 and a male second pushbutton part 1 which is provided for connection to a subregion of the electrically conductive structure 9. The coupling element 14 furthermore has a covering 15 for sealing. The sheath 15 is firmly connected to the substrate 17 via the adhesive layer 16. The sheath 15 is also designed as a packaging for the coupling element 14. It is waterproof, dirt-proof and, according to embodiments, even hermetically closed. The electrical coupling element 14 is protected from damage or corrosion caused by moisture by the sheathing 15.

The adhesion layer 16 causes adhesion between the capsule 15 and the substrate 17. The sheath 15 is permanently fixed to the surface of the substrate 17 by means of the adhesive layer 16. Furthermore, the adhesive layer 16 serves as a seal in order to seal the coupling element 14 in the interior of the sheathing 15 in a waterproof manner. The adhesive layer 16 is configured as a double-sided adhesive tape. This adhesive strip leads to a particularly simple handling of the sheathing 15 during the production of the sheet material arrangement 100 and to a good adhesion of the sheathing 15 to the substrate 17. Alternatively, the attachment layer 16 may comprise an acrylic-based adhesive. The adhesive gives particularly good adhesion. The attachment layer may also comprise other suitable materials to facilitate attachment, such as polyurethane or epoxy. The adhesion layer 16 may have a thickness of 50 to 250 μm (micrometers).

In the embodiment shown in fig. 6, the sheet assembly 100 comprises two coupling elements 14, each of which has a sheath 15 on a substrate 17. The coupling elements 14 are arranged at a distance from one another at the base 17.

Fig. 7a to 7c schematically show the sheet assembly 10 and illustrate different embodiments of the opening 18. Fig. 7a shows an embodiment in which the opening 18 (position a) of the capsule 15 is arranged centrally. Fig. 7B shows an alternative and preferred embodiment, in which the opening 18 (position B) is at the side wall 15.3 of the upper part 15.2 of the capsule 15. Fig. 7C shows a further embodiment, in which the opening 18 (position C) is at the side wall 15.3 of the base part 15.1 of the capsule 15. The direction of the drawing force or load, respectively, is shown by the arrows and designated by "F".

Fig. 8 shows a schematic side view of the sheet assembly 100 in fig. 7b and illustrates the increase in strength where the coupling elements 14 are attached to the substrate 17. The opening 18 having the position a in fig. 7a is most advantageous for achieving as high a strength as possible when the coupling element 14 is subjected to a 90 pulling attempt from the base 17.

List of reference numerals

1. Second button member

2. Bottom plate of second button member 1

3. Connecting element of a second push-button part 1

4. Hole(s)

5. Accommodating part

6. Contact surface

7. First button member

8. Connecting cable

8.1 Cable core

8.2 Cable sheath

9. Conductive structure

10. Solder material

11. Coupling area

12. Push button

13. Welding layer

14. Coupling element

15. Sheath

15.1 Base part of a capsule

15.2 Upper part of a jacket

15.3 Side wall of the sheath

16. Adhesive layer

17. Substrate

18. Opening of the container

19. Collar section

100. Sheet assembly

F, drawing force.

Claims

1. A sheet assembly (100) having at least one electrical coupling element (14), comprising:

-a substrate (17),

-an electrically conductive structure (9) on a region of the substrate (17),

an electrically conductive coupling element (14) configured as a push button (12),

-means (10) for electrically conductively connecting the connection element (14) to at least a partial region of the electrically conductive structure (9),

wherein the coupling element (14) comprises

A first push-button part (7) having a coupling region (11) for connection with an electrical coupling cable (8), and

a complementary second push-button part (1) which is provided for connection with the first push-button part (7) and with a partial region of the electrically conductive structure (9), and

a capsule (15) for sealing, wherein the capsule (15) is firmly connected to the substrate (17) via an adhesive layer (16).

2. The sheet assembly of claim 1, wherein the wrap (15) is constructed of plastic.

3. Sheet assembly according to any one of claims 1 or 2, wherein the jacket (15) comprises a base part (15.1) and an upper part (15.2), the coupling element (14) being arranged at least partially in the base part (15.1) and the coupling cable (8) and/or a cable core (8.1) of the coupling cable (8) being arranged in the upper part (15.2).

4. A sheet assembly according to claim 3, wherein the base part (15.1) of the envelope (15) has a larger circumference than the upper part (15.2) of the envelope (15).

5. Sheet assembly according to one of claims 1 to 4, wherein the envelope (15) has a rectangular, in particular square, base surface.

6. The sheet assembly according to any one of the preceding claims, wherein the attachment layer (16) is configured as a double-sided adhesive tape, in particular an adhesive film, or comprises an acrylic-based adhesive, polyurethane or epoxy resin, wherein the attachment layer (16) has a thickness of 50 μm to 250 μm.

7. The sheet assembly according to any one of the preceding claims, wherein the envelope (15) has an opening (18) for introducing the coupling cable (8).

8. The sheet assembly according to claim 7, wherein the opening (18) is arranged at a base part (15.1) of the capsule (15) and/or at an upper part (15.2) of the capsule (15), in particular at a side wall (15.3) of the capsule (15).

9. The sheet assembly according to one of claims 1 to 8, wherein a collar section (19) is provided at the opening (18) of the jacket (15), which collar section is provided for sealing the opening (18) and for threading the coupling cable (8) or a cable core (8.1) of the coupling cable (8) into the jacket (15).

10. The sheet assembly according to one of the preceding claims, wherein the coupling region (11) of the first button part (7) is configured as an electrically conductive cover, in particular a metal cover, via which at least one cable core (8.1) of the coupling cable (8) is electrically conductively connected with the first button part (7).

11. The sheet assembly of claim 10, wherein a cable core (8.1) of the coupling cable (8) is arranged on the cover.

12. The sheet material assembly according to claims 9 to 11, wherein a solder compound, a solder connection or a crimp connection conductively connects at least one cable core (8.1) of the coupling cable (8) with the coupling region (11) of the first button part (7).

13. The sheet assembly according to any one of the preceding claims, wherein the coupling area (11) of the first button member has a plate-like area.

14. The sheet assembly according to any of the preceding claims, wherein the first button part (7) can be snapped onto the second button part (7) by means of a spring element or a lip.

15. Sheet assembly according to one of the preceding claims, wherein the substrate (17) has two or four electrically conductive coupling elements (14) each having a sheathing (15) for sealing, which coupling elements are configured as push buttons (12) and are arranged at a distance from one another at the substrate (17).