Assembly for insulation glazing and insulation glazing

Abstract

The present application discloses an assembly adapted to be arranged between a first pane and a second pane of an insulation glazing, the assembly comprising an aperture adapted for a contact comprising a first contact point and a second contact point, and a resilient structure tensioned during the manufacture of the insulation glazing, the invention relates to an assembly for an electrical component comprising a first contact point and a second contact point, such that the first contact point is securely held to the electrical component after manufacturing the insulation glazing, the first contact point having a contact area of less than 1 cm < 2 >, a method of manufacturing such an assembly, an insulation glazing comprising such an assembly and a method of manufacturing such an insulation glazing.

Description

[0001] The present invention relates to an assembly adapted to be arranged between a first window glass plate and a second window glass plate of an insulated window glass, a method of manufacturing such an assembly, an insulated window glass comprising such an assembly, and a method of manufacturing such an insulated window glass.

[0002] Window glasses are typically installed in openings in a building: these openings may be within the building envelope or within the building itself. These window glasses can be insulated window glasses, in which at least two window glass plates are arranged in a face-to-face configuration with a cavity therebetween. The cavity is typically maintained by a spacer between the window glass material sheets, and the cavity typically contains an insulating gas, but in some cases, the cavity may contain a vacuum. In either case, an airtight seal is typically provided around the perimeter of the window glass material sheets and between the window glass material sheets to maintain the atmosphere of the cavity. Insulated window glasses may also be referred to as insulated window glass units or insulated glazing units (IGUs).

[0003] In some cases, an insulated window glass may include electrical components that require electrical energy. Previous methods of supplying electrical energy to electrical components located within the cavity have included using cables welded to the electrical components.

[0004] For example, GB 1262372 describes a conductor extending through a gasket in a spacer bar, and a sleeve around the conductor for electrically insulating the conductor from the gasket and the spacer bar and for airtight sealing the gasket around the conductor. The conductor is welded to a bus bar.

[0005] However, welded connections are fragile and can thus easily break during and / or after the production and / or installation of the insulated window glass unit. In particular, the glass plates may bend due to impact, wind pressure, or due to a pressure difference between the cavity and the external environment. Such bending may over time cause the welds, which are often brittle, to break, thereby deteriorating or completely preventing the electrical connection. This can result in waste at the location where the break occurs and is detected during the production process, or can result in a complete replacement when the welded connection fails after installation.

[0006] Previous attempts have been made to provide alternative methods for connecting to electrical components within an insulated window glass.

[0007] There have been provided spacer profiles for providing electrical connections within an insulated window glass. For example, WO2019086384A1 discloses a spacer for an insulated window glass unit having three or more window glass plates, which encloses at least one airtight sealed gap between at least two window glass plates, the spacer comprising a groove for receiving an intermediate window glass plate, and the spacer comprising at least two conductive portions that are electrically isolated from each other and are located in one or both of the side walls and / or the bottom wall of the groove.

[0008] In addition, a corner key for providing electrical connection within an insulating window glass is provided. For example, US9402283B2 discloses a corner key assembly for an electrically heated insulating window glass unit, which assembly includes an elastic clip. The geometry of the spring clip is such that when the spring clip is compressed between two parallel glass plates, the major plane of the spring clip will contact the two parallel surfaces of the glass in a flat manner, with full contact. However, such a spring clip contacts both surfaces, which may not be suitable for certain applications.

[0009] Accordingly, it is an object of the present invention to overcome the above-mentioned drawbacks of the method of supplying electrical energy to an electrical component located within a cavity.

[0010] According to a first embodiment of the present invention, an assembly suitable for being arranged between a first window glass plate and a second window glass plate of an insulating window glass is provided, wherein the first window glass plate includes an electrical component on a first major surface facing the second window glass plate, and the assembly includes:

[0011] a body including a first wall to face the first window glass plate and a second wall to face the second window glass plate; and

[0012] a contact receiving member including an aperture, wherein:

[0013] the aperture is adapted to receive a contact member including a first contact point and a second contact point;

[0014] the orientation of the aperture is such that when the assembly is arranged between the first window glass plate and the second window glass plate, the first contact point is positioned to be adapted to contact the electrical component directly or indirectly; and

[0015] the assembly includes an elastic structure that is tensioned during the manufacture of the insulating window glass such that after the insulating window glass is manufactured, the first contact point is firmly held directly or indirectly against the electrical component; and wherein the contact area of the first contact point is less than 1 cm 2 .

[0016] The inventors have advantageously found that when such a body is used in combination with the contact member, a secure and solderless connection to the electrical component on the major surface of the first window glass plate can be provided. In the case where the assembly does not include an elastic structure, the contact member that is firmly held against the electrical component (in the absence of soldering) is held by the bending of the window glass plate, which can result in excessive stress on the window glass seal, damage to the electrical component, or even glass breakage. Introducing an elastic structure in the assembly can provide a firm connection while greatly reducing the risks of window glass seal cracking, electrical component damage, and glass breakage.

[0017] The electrical components suitable for use with the assemblies of the present invention are not unduly limited. For example, suitable electrical components can include, but are not limited to, heating coatings, printed heating wires, blinds, photovoltaic elements, displays, variable light transmission elements, bus bars, and combinations thereof. Those skilled in the art will understand that these electrical components should be electrically isolated from the surface external to the insulating window glass to prevent the risk of damage or injury.

[0018] As defined herein, when a force of 0.2 to 5 N is applied to the electrical component through the contact point at a vector angle of 10° to 180°, the first contact point is firmly held to the electrical component, where 90° is perpendicular to the contact portion of the electrical component. Preferably, a force of 0.5 to 1.8 N is applied through the contact point. More preferably, a force of 0.75 to 1.4 N is applied through the contact point. Smaller forces are associated with less secure electrical connections, while larger forces can cause damage to the electrical component and / or the window glass panel. Preferably, the vector angle is 30° to 150°. More preferably, the vector angle is 60° to 120°. More preferably, the vector angle is 80° to 100°. More preferably, the vector angle is 85° to 95°. Most preferably, the vector angle is 89° to 91°. The closer the vector angle is to 90°, the more secure the connection will be.

[0019] In some embodiments, the body includes the elastic structure. The elastic structure can take the form of flexible body features that are consistent with the body, such as levers, arms, or other flexible features that can be tensioned under load. However, preferably, the reversibly compressible structure is aligned with the first contact point such that the force applied by the tensioned elastic structure presses the first contact point to the electrical component without any potential deviation that could result in poor contact or loss of contact.

[0020] Preferably, the elastic structure includes at least one spring or a long-lasting elastic material. Springs and long-lasting elastic materials, such as rubber rods, are particularly durable and provide long-lasting reversible compression. Preferably, the elastic structure does not include foam bodies because such foam bodies can deteriorate over time, losing their tension and reducing the force applied between the first contact point and the electrical component, thereby causing the electrical connection to deteriorate since such foam bodies are not long-lasting elastic materials.

[0021] Those skilled in the art will understand that the elastic structure can be incorporated into many parts of the body. However, preferably, the contact receiving member and / or the terminal (if present) and / or the contact (if present) include a reversibly compressible structure. These parts are most closely associated with the cavity and are thus most suitable for pressing the contact to the electrical component of the first window glass panel.

[0022] The orientation of the orifice is such that when the body is disposed between the first window glass plate and the second window glass plate, the first contact point directly or indirectly contacts the electrical component. Those skilled in the art will understand that such direct or indirect contact allows for electrical transmission between the first contact point and the electrical component. Thus, when the assembly is located within the insulating window glass unit, an electrical connection is formed between the first contact point of the contact member and the electrical component, thereby allowing for electrical communication between the electrical component and a power source and / or data source external to the insulating window glass, without the need for soldering between the contact member and the electrical component - thus providing a solderless connection. Preferably, the first contact point directly contacts the electrical component and is directly held thereto. Preferably, the orientation of the orifice is substantially perpendicular to the main surface of the first window glass plate. As defined herein, substantially perpendicular means between 60 and 120 degrees with respect to the window glass plate. An orifice having an orientation substantially perpendicular to the main surface of the first window glass plate has the advantage that a more secure connection can be achieved between the contact member and the electrical component on the first window glass plate.

[0023] Preferably, the contact member does not contact the second window glass plate and / or the contact member does not electrically communicate with the electrical component on the second window glass plate. This is particularly beneficial when the second window glass plate is provided with a coating, such as an infrared radiation reflecting coating, which includes a conductive layer. In such a case, if it is not desired to use such a coating as a heating coating, the coating should not be made electrically charged, as this can cause the insulating window glass spacer bar workpiece or even the perimeter of the insulating window glass to become electrically charged, thereby posing a risk of damage or danger to the user. Additionally, if the contact member contacts the second window glass plate and the first window glass plate or the associated electrical components, the contact member can form a thermal bridge between the window glass plates, thereby reducing the energy efficiency of the window glass. In particular, the thermal bridge can cause condensation to form on the inner pane, in the portion of the pane that contacts the thermal bridge contact member being significantly colder than other portions of the pane.

[0024] Preferably, the orientation of the orifice is such that the orifice opening faces the first window glass plate. This arrangement allows for the provision of a linear contact, which can be smaller and less visible to the end user than alternative contacts, such as spring clips.

[0025] Before being disposed between the first window glass plate and the second window glass plate, the assembly is provided with the contact member. Thus, in some embodiments, the assembly further includes a contact member having a first contact point and a second contact point, wherein the contact member is at least partially located within the orifice.

[0026] Preferably, the contact member includes a metal or an alloy. Preferably, the contact member includes gold, nickel, palladium-nickel, copper-zinc-tin, palladium cobalt, copper, brass, or a mixture thereof. The contact member can include a conductive coating, which improves the electrical transmission between the contact member and the electrical component.

[0027] In some embodiments, the contact is at least partially inserted into the aperture immediately before the spacer frame of the insulating window glass is prepared or even before the insulating window glass is prepared. Alternatively, the contact can be pre-assembled with the body such that the assembly comprising the contact can be mass-produced. For example, the contact can be encapsulated in the aperture during the body manufacturing process, such as during a 3D printing or molding process.

[0028] The contact area of the first contact point is less than 1 cm 2 , more preferably less than 0.5 cm 2 , even more preferably less than 0.1 cm 2 . The smaller contact area reduces the risk of scratching the glass surface. In addition, the smaller contact area allows for the use of multiple contacts, thus allowing redundancy to be introduced into the system. In addition, compared to a larger contact area, the smaller contact area increases the light transmission through the window glass. In addition, the smaller contact area reduces the risk of thermal bridging. In addition, a larger contact area can exacerbate the contraction and expansion effects of the contact, which can cause the electrical connection between the contact point and the electrical component to become unreliable.

[0029] Preferably, the first contact point is a point-type contact point, preferably a spherical or hemispherical contact point. A point-type contact point, especially a spherical or hemispherical contact point, allows the risk of scratching to be greatly reduced. In addition, a point-type contact point allows for a consistent contact area even when the window glass plate moves. A captured spherical contact point is particularly preferred because it can roll, thus greatly reducing the risk of scratching.

[0030] While in some embodiments the contact may comprise an elastic structure, preferably the elastic structure is not a substantially conductive elastic structure. In particular, preferably the contact point is not part of the elastic structure. This is because elastic structures are typically made of materials suitable for providing long-term elastic behavior, but these materials are generally not suitable for electrical transmission, for example due to high resistivity. For example, a steel spring is an excellent elastic structure that can be used in the present invention, but preferably it is not used as a conductor or to provide a contact point because the high resistance can result in low electrical transmission efficiency and high temperatures in the assembly, which is undesirable because some materials in the assembly can melt due to local high temperatures, such as when parts of the components contain plastics or resins. In contrast, brass or copper springs may be good conductors, but due to the softness of the materials, they cannot provide long-term elastic behavior.

[0031] Preferably, the elastic force exerted by the elastic structure is from 25 grams to 500 grams. More preferably, the elastic force exerted by the elastic structure is from 50 grams to 250 grams. More preferably, the elastic force exerted by the elastic structure is from 80 grams to 150 grams, and more preferably the elastic force is from 90 grams to 120 grams.

[0032] The inventors have found that this elastic force allows for a firm and mechanically flexible electrical connection. An elastic force above this range may result in insufficient compression of the elastic structure, causing damage to the bus bar or the corner key body, or even damage to the glass plate. An elastic force below this range may result in insufficient rebound of the elastic structure, thus failing to establish a firm electrical connection.

[0033] Preferably, the contact member comprises a sprung barrel contact member. The sprung barrel contact member can be referred to as a "pogo pin". Such a contact member generally comprises a barrel with an opening and a pin partially constrained within the barrel, which can move independently of the barrel and can protrude from the opening by different lengths. The barrel comprises a spring or elastic material such that the pin can be reversibly pushed into the barrel, preferably the spring is a stainless steel spring. In some cases, the sprung barrel contact member can comprise a cylindrical barrel and / or the barrel can comprise positioning features such as flanges. Such sprung barrel contact members are beneficial because they can easily be combined with different window glass cavity widths, allowing for rapid manufacture of the assembly and the associated window glass, and providing a long-lasting flexible electrical connection.

[0034] The sprung barrel contact member can be provided as a single contact member, or can be associated with other contact members by using a barrel with multiple pins, or a receptacle for multiple contact members, as described below. The sprung barrel contact member can have a linear barrel where the first contact point is aligned with the second contact point, or the barrel can comprise an angle such that the first contact point is at an angle to the second contact point.

[0035] The pin of the sprung barrel contact member can comprise brass, beryllium copper, phosphor bronze or SK4 steel. The pin of the sprung barrel contact member is preferably gold-plated. Gold provides excellent electrical conductivity and provides high protection against corrosion and oxidation. Preferably, the pin of the sprung barrel contact member is plated with nickel 1 - 2 microns thick, followed by gold 0.1 - 1 micron thick to improve the durability of the gold plating. Alternatively, the pin can be plated with nickel, palladium nickel, red brass, palladium cobalt or other metals and metal alloys, depending on the specific requirements of the application. The pin comprises a contact point, preferably the contact point is a point-type contact point, preferably a spherical or hemispherical contact point. A point-type contact point, especially a spherical or hemispherical contact point, allows for a greatly reduced risk of scratching. A constrained spherical contact point is particularly preferred because it can roll, thus greatly reducing the risk of scratching.

[0036] The barrel can comprise brass, preferably the brass is coated with beryllium copper or phosphor bronze.

[0037] The barrel of the resilient barrel contact can be formed as a blind hole with a single pin that can move independently of the barrel. Alternatively, the resilient barrel contact can include pins at each end of the barrel, which can move independently of the barrel and independently of each other, called a "double-ended resilient barrel contact". The double-ended resilient barrel contact can be provided by using a barrel with a through-hole and a single spring or elastic member that allows the two pins to interact. The double-ended resilient barrel contact is advantageous because a flexible and firm electrical connection can be made between the electrical components on the first window glass plate and the contact, and between the contact and the terminal and / or electrical transmission device (if present). Therefore, preferably, the assembly includes a contact having a first contact point and a second contact point, wherein the contact is at least partially located within the orifice, and wherein the contact includes a double-ended resilient barrel contact.

[0038] The double-ended resilient barrel contact allows for a durable, high-transmission and mechanically flexible electrical connection between two different conductors, while also providing a simplified manufacturing process for insulated window glass manufacturing, as the assembly can be pre-assembled and then added to the window glass during the manufacturing process without the need for expensive welding operations. Such a contact can "float" within the orifice, thus easily accommodating any bending or movement of the window glass plate.

[0039] Preferably, the elastic force exerted by the resilient barrel contact or the double-ended resilient barrel contact is from 25 grams to 500 grams. More preferably, the elastic force exerted by the resilient barrel contact or the double-ended resilient barrel contact is from 50 grams to 250 grams. More preferably, the elastic force exerted by the resilient barrel contact or the double-ended resilient barrel contact is from 80 grams to 150 grams. More preferably, the elastic force exerted by the resilient barrel contact or the double-ended resilient barrel contact is from 90 grams to 120 grams.

[0040] The inventors have found that such an elastic force allows for a firm and mechanically flexible electrical connection. An elastic force above this range can result in insufficient compression of the pins, causing damage to the bus bar or corner key body, or even the glass plate. An elastic force below this range can result in insufficient rebound of the pins, thus failing to establish a firm electrical connection.

[0041] For certain applications, especially when the electrical component is a bus bar for a heating coating or printed heating wire, preferably, the resilient barrel contact or the double-ended resilient barrel contact is suitable for transmission of 5 amperes or more, preferably 10 amperes or more.

[0042] It is beneficial to provide a terminal to provide a firm electrical connection to the second contact point. Therefore, preferably, the assembly further includes a terminal associated with the orifice such that when the assembly includes a contact, the terminal is in electrical communication with the second contact point.

[0043] Preferably, the assembly includes a terminal associated with the orifice, because when the contact is inserted into the orifice, the second contact point of the contact can be in electrical communication with the terminal. The terminal includes a conductive material, such that electrical communication can be achieved between the contact and the electrical transmission device (if present). Preferably, the terminal includes copper and / or brass. In some embodiments, the terminal may be plated with, for example, gold or other conductive materials to improve electrical transmission.

[0044] Preferably, the terminal includes a first portion for contacting the contact and a second portion for contacting the electrical transmission device. The first portion preferably includes a plate. In some embodiments, the first portion and the second portion are at an angle to each other, and in a particularly preferred embodiment, the terminal is formed in an "L" shape, with the first portion and the second portion being substantially at right angles to each other. This provides a first portion and a second portion between the window glass panes, where the first portion is oriented to contact the contact facing the first window glass pane, and the second portion is oriented to contact the electrical transmission device extending out of the insulating window glass unit. The terminal can be inserted into the body during the preparation of the insulating window glass. Alternatively, the terminal can be formed within the body during the production of the body, for example, by injection molding the body around the terminal or 3D printing the body around the terminal.

[0045] As described above, the terminal can include an elastic structure. Thus, in some embodiments, the terminal includes at least one spring or elastic material.

[0046] In some embodiments, the terminal includes a spring or elastic material and is oriented such that it can act on the contact. The springs and elastic materials described herein with respect to the contact can be used.

[0047] [Contact receiving member]

[0048] The assembly includes a contact receiving member. Preferably, the contact receiving member is formed as part of the body, such as an essential part of the body or a part adhered to the body. Preferably, the contact receiving member is made of the same material as the body. In any case, the assembly includes a body and a contact receiving member that are connected together such that after the insulating window glass unit is manufactured, the contact receiving member cannot be separated from the body without damaging the assembly. Although a contact receiving member within the spacer frame assembly is contemplated, it is beneficial for the contact receiving member to contact the electrical component inside the spacer frame such that the electrical component does not need to contact the spacer frame, without the risk of the outer surface being charged. For example, it is beneficial when the electrical component includes a heating coating, the heating coating is edge-removed, and the contact receiving member is located sufficiently inside the window glass edge such that the first contact point can contact the heating coating or the bus bar associated with the heating coating.

[0049] The contact receiving member includes an orifice. The orifice may be formed as a blind hole in the contact receiving member such that a first orifice end is open to form an orifice outlet while a second orifice end is closed. In this case, preferably, within the orifice, the terminal is associated with the closed second orifice end.

[0050] Alternatively, the orifice may be formed as a through hole in the contact receiving member such that a first orifice end is open to form a first orifice outlet while a second orifice end is open. In this case, advantageously, the terminal is associated with the open second orifice end and forms an end wall of the orifice. In this embodiment, preferably a non-conductive workpiece is between the terminal and the second window glass plate to prevent the second window glass plate from being charged. In either case, preferably, the contact receiving member prevents the contact and / or the terminal from directly contacting the second window glass plate or an electrical component on the second window glass plate or from charging it.

[0051] Regardless of the shape of the contact, preferably, the shape of the orifice of the contact receiving member allows the contact to be inserted without excessive thrust that may cause damage and without excessive clearance that may cause the contact to deviate from the desired path or even allow the contact to be released from the orifice during use, resulting in the device not operating properly. If the contact includes flanges or positioning features, the orifice may be formed such that the contact receiving member mates with these flanges or positioning features to further improve the retention and alignment of the contact.

[0052] In some embodiments, the assembly may include additional orifices adapted for additional contacts that include additional first contact points, wherein the orientation of the additional orifices is such that when the body is disposed between the first window glass plate and the second window glass plate, the additional first contact points directly or indirectly contact one or more electrical components. For example, the assembly may include multiple contact receiving members or multiple orifices within a contact receiving member. An assembly having additional orifices may allow for increased power transfer, redundancy, positive and negative polarities of power, data and power communication, and / or providing data and power communication to more than one electrical component.

[0053] Thus, the contact receiving member may include multiple orifices adapted for inserting contacts, for example, the contact receiving member may include two, three, four or more orifices for two, three, four or more contacts respectively. These additional orifices may be formed in the same manner or in a manner different from the orifice.

[0054] The contact receiving member can be formed as a single part. Alternatively, the contact receiving member can be formed as multiple parts. In some embodiments, a first contact receiving member is inserted or formed within the body, and the contact is adhered to, frictionally engaged with, formed on, or associated with a second contact receiving member portion. During the production of the insulating glazing unit, the second contact receiving member portion is inserted into the body together with the contact and aligned with the first contact receiving member portion. This improves production efficiency, especially in the case of multiple contacts, because the contacts can be retained in the second contact receiving member portion and inserted as a single unit, preventing manual operation errors.

[0055] [Electrical transmission device]

[0056] In some embodiments, the assembly further includes an electrical transmission device adapted to provide electrical communication with an external power source and / or data source external to the insulating glazing.

[0057] In use, the electrical transmission device provides an electrical connection between the external power source and / or data source and the electrical components within the insulating glazing unit through the terminals (if present) and the contacts.

[0058] The electrical transmission device can, for example, include wires welded to the terminals and extending out between the first and second window glass plates to provide the electrical connection. However, such wires have disadvantages, such as increased damage due to snagging.

[0059] Preferably, the electrical transmission device extends less than 1 centimeter outward from the body. More preferably, the electrical transmission device extends less than 0.5 centimeter outward from the body. Even more preferably, the electrical transmission device does not extend outward from the body. As used herein, the phrase "extends outward from" means "extends out from the surface facing the exterior of the insulating glazing unit", and any measurement is made with the electrical transmission device fully extended perpendicular to the surface, the measurement being from the end of the electrical transmission device to the surface, or, if the electrical transmission device itself does not contact the surface, from the plane aligned with the surface.

[0060] The electrical transmission device can include a connection element that can be connected to an external connection to provide external power and / or data. Using the connection element can allow for efficient electrical connection when the insulating glazing unit is installed in a window glass aperture and can eliminate the use of wires extending out of the window glass. Using an electrical transmission device that includes a connection element allows for reversible connection of external electrical connections without breaking the airtight seal. Thus, high-quality insulating glazings can be produced without the need for re-inflation after on-site electrical connection.

[0061] The connecting element can be, for example, a pin, a male plug, a female plug, a screw or a flat sheet. Preferably, the connecting element comprises a blind hole, preferably adapted for a pin, a male plug or a screw. This connection provides a hermetic electrical transmission means between the terminal and a power source and / or a data source outside the window glass. The hermeticity of the electrical transmission means can be enhanced by using a sealant (preferably a butyl sealant), provided that the application of the sealant does not prevent the electrical connection.

[0062] The electrical transmission means preferably comprises means for assisting in positioning the electrical connector by engaging with a relevant member within or above the mating external electrical connector. Such positioning means preferably may comprise magnets designed to mate with magnets within or above the electrical connector.

[0063] The electrical transmission means preferably comprises locking means to prevent accidental disconnection of the electrical connector. Such locking means preferably may comprise a biasing hook, a screw fastener and / or a magnet adapted to engage with a relevant member comprised within or above the electrical connector.

[0064] In some embodiments, the connecting element comprises a conductive insert which is in electrical communication with the terminal in a secure and solderless manner. Preferably, the conductive insert is in direct electrical communication with the terminal and preferably, the conductive insert also holds the terminal in place within the body. However, if desired, wires or other conductors can be used within the assembly to provide the electrical connection between the terminal and the conductive insert. Preferably, the conductive insert comprises a blind hole as disclosed above with respect to the connecting element.

[0065] In some embodiments, the conductive insert can be constrained within the body during the body formation process, such as during an injection molding or 3D printing process.

[0066] Alternatively, the conductive insert can be inserted into the body after the body is formed. In such an embodiment, the body can comprise a through hole for inserting the conductive insert. In an alternative embodiment, the body can comprise a blind hole for guiding the insertion of the conductive insert, wherein a portion of the body is pierced during the insertion of the conductive insert. This can provide a more hermetic electrical connection.

[0067] If the conductive insert is to be inserted into the body after the body is formed, it is preferred to provide some fixing means. In some embodiments, the conductive insert can be fixed by friction and / or glue and / or external screw threads. A conductive insert fixed in the body by external screw threads can be referred to as a conductive threaded insert. Preferably, the electrical transmission device comprises a conductive threaded insert. Such a threaded conductive insert can comprise a knurled portion or a screwdriver head aperture to assist insertion. In the case where the body is formed with a hole that mates with the threaded conductive insert, threads can be provided in the hole. Alternatively, the threaded conductive insert can cut threads in the body during insertion.

[0068] A threaded conductive insert comprising a blind hole is particularly advantageous as it provides a firm and durable electrical connection while maintaining the atmosphere of the insulating window glass cavity.

[0069] The electrical transmission device is preferably a threaded conductive insert that is directly electrically connected to the terminal and comprises a blind hole suitable for an external connection, preferably where the external connection is a screw-type connection.

[0070] Those skilled in the art should note that such conductive inserts, particularly threaded inserts, can be applied more widely than just in the present invention, but can also be applied to conventional spacer frame workpieces with alternative types of electrical connection. Thus provided are: a threaded conductive insert suitable for a spacer frame workpiece, the insert comprising a blind hole suitable for a connection, preferably where the connection is a screw-type connection; a spacer frame workpiece comprising such a threaded conductive insert; and an insulating window glass unit of a spacer frame workpiece comprising such a conductive insert.

[0071] [Body]

[0072] The assembly comprises a body that comprises a first wall and a second wall. The first wall is arranged to face the first window glass plate in use, and the second wall is arranged to face the second window glass plate in use. The first wall and / or the second wall of the body can be provided with metal foil to improve the airtightness of the insulating window glass unit.

[0073] It is generally desirable that the assembly of the insulating window glass unit does not unduly interrupt the light path and the consumer's line of sight through the insulating window glass unit. Thus, in some embodiments, the assembly is adapted to cooperate with a spacer frame assembly such that it remains within the peripheral region of the insulating window glass unit and is unlikely to migrate to the central region and unduly interrupt the light path through the insulating window glass unit.

[0074] Preferably, the body is an insulating window glass unit spacer assembly, such as a spacer profile or a connector. Spacer profiles are typically straight, hollow members that usually contain a desiccant. Spacer connectors typically include a pair of arms that cooperate with spacer profiles to join them together. A spacer connector that includes two aligned arms is called a linear connector, while a spacer connector that includes two angled arms is called an angular connector, also known as a corner key. A typical insulating window glass unit includes four spacer angular connectors, one at each corner of a rectangular insulating window glass unit.

[0075] The body can be a spacer profile or a linear connector. However, preferably, the body is a spacer angular connector as this allows for electrical connection at the corners of the insulating window glass unit, thereby reducing the visibility of the assembly to the end user of the insulating window glass unit.

[0076] The connecting arms should be designed such that a secure connection can be provided between the spacer connector and the mating spacer, while allowing for reasonable push-in forces and high pull-out forces. If the push-in force is too high, the connection may not be complete, resulting in a loose connection. Additionally, if the push-in force is too high, angular forces can be applied during the manufacturing process, causing damage to the connector and / or profile. If the pull-out force is too low, a loose connection can result. Additionally, an airtight connection is preferably made between the connector and the profile to prevent any gas from leaking out of the insulating window glass unit and / or the desiccant from escaping from the spacer profile.

[0077] When combined with spacer workpieces, the body can form part of the spacer perimeter, thereby interrupting other spacer workpieces. However, in some embodiments, the body may be more permeable than alternative spacer workpieces, potentially allowing air to enter the cavity from the atmosphere, resulting in condensation and reduced insulating performance. Therefore, it is desirable to minimize the interruption of the spacer by the body. Thus, preferably, the interruption length of the body (defined as the length that the body travels between two adjacent spacer workpieces adjacent to the body in use) is less than 10 centimeters, preferably less than 5 centimeters, and more preferably less than 2 centimeters. In the case where the assembly has a linear body, the interruption length is the linear interruption length and is measured along the centerline passing through the adjacent spacer workpieces. In the case where the assembly has a non-linear body, such as when the assembly includes a corner key, the interruption length is measured through the inflection point aligned with the centers of the two adjacent spacer workpieces.

[0078] Preferably, the body comprises one or more of the following materials: polyethylene (PE), polycarbonate (PC), polystyrene, polybutadiene, polyacrylonitrile, polyester, polyurethane, polymethyl methacrylate, polyacrylate, polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene (PP), acrylonitrile - butadiene - styrene (ABS), acrylate - styrene - acrylonitrile (ASA), acrylonitrile - butadiene - styrene polycarbonate (ABS / PC), styrene - acrylonitrile (SAN) - containing, polyethylene terephthalate polycarbonate (PET / PC), polybutylene terephthalate polycarbonate (PBT / PC), or a copolymer or derivative or mixture thereof.

[0079] If the body is a printed body, preferably, the printed body comprises polyamide 12 (PA12), polyamide 11 (PA11), polyamide 2200 (PA2200), polypropylene, acrylonitrile - butadiene - styrene (ABS), acrylate - styrene - acrylonitrile (ASA), polycarbonate, or a copolymer or derivative or mixture thereof.

[0080] Preferably, the body comprises a varnish or a coating. The varnish and the coating can be provided for changing the color, texture, ultraviolet resistance, and sealant compatibility of the body.

[0081] The varnish or the coating can be applied to the body, for example, to improve the ultraviolet resistance of the body. In an embodiment, the entire body is provided with the varnish or the coating. Alternatively, only the surfaces that will be exposed to ultraviolet rays after the insulating window glass unit is assembled can be provided with the varnish or the coating.

[0082] In a preferred embodiment of the first aspect of the present invention, an assembly suitable for being disposed between a first window glass plate and a second window glass plate of an insulating window glass is provided, wherein the first window glass plate comprises an electrical component on a first main surface facing the second window glass plate, and the assembly comprises:

[0083] A spacer frame corner connector, which comprises a first wall facing the first window glass plate and a second wall facing the second window glass plate;

[0084] A contact receiving member comprising an orifice;

[0085] An elastic barrel contact, preferably a double - ended elastic barrel contact, comprising a first contact point and a second contact point, wherein the elastic barrel contact is at least partially located within the orifice;

[0086] A terminal associated with the orifice such that the terminal is in electrical communication with the second contact point; and

[0087] An electrical transmission device suitable for electrical communication between the terminal and an external power source and / or data source outside the insulating window glass, wherein:

[0088] The orientation of the orifice is such that when the body is disposed between the first window glass plate and the second window glass plate, the first contact point directly or indirectly contacts the electrical component; and

[0089] The elastic barrel contact is tensioned during the manufacture of the insulating window glass such that after the manufacture of the insulating window glass, the first contact point is firmly held to the electrical component.

[0090] This preferred embodiment provides a long-lasting, durable and firm connection to the electrical component.

[0091] According to a second embodiment of the present invention, there is provided a method of manufacturing an assembly according to any of the preceding claims, wherein the body and / or the contact receiving member is injection molded, extruded or 3D printed, preferably the contact receiving member is an integral part of the body, and the body and the contact receiving member are injection molded or 3D printed, most preferably, the contact receiving member is an integral part of the body, and the body and the contact receiving member are 3D printed.

[0092] In some embodiments, the body is injection molded, particularly when the body is a spacer frame connector. The injection molded body can be manufactured in a cost-effective manner.

[0093] Alternatively, the body can be 3D printed. The 3D printed body can provide an increased range of surface textures and materials. The 3D printed body can be provided by methods such as multi-jet fusion (MJF), selective laser sintering (SLS), stereolithography (SLA), multi-head printing, fused deposition modeling (FDM) and selective laser melting (SLM).

[0094] In the case where the body is 3D printed, mechanical and thermal post-processing operations can be performed on the body. These processes can include vibratory finishing, sandblasting, milling, turning, light treatment, heat treatment, chemical smoothing, etc.

[0095] The contact receiving member can be produced separately from the body and then combined with the body to provide the assembly. In this case, the contact receiving member can be produced, for example, by 3D printing, extrusion, molding, additive manufacturing, subtractive manufacturing (such as computer numerical control (CNC)), turning or other suitable methods.

[0096] The alternative features disclosed herein with respect to the first aspect of the present invention can be applied in any combination to the second aspect of the present invention.

[0097] As described in the first aspect of the present invention, the inventors provide an assembly suitable for insulating window glass units. Thus, according to the third aspect of the present invention, there is provided an insulating window glass comprising a first window glass plate, a second window glass plate, and an assembly located between the first window glass plate and the second window glass plate, wherein the first window glass plate comprises an electrical component on a first major surface facing the second window glass plate, and wherein the assembly comprises:

[0098] a body comprising a first wall facing the first window glass plate and a second wall facing the second window glass plate;

[0099] a contact receiving member comprising an orifice;

[0100] a contact comprising a first contact point and a second contact point, wherein the contact is at least partially within the orifice;

[0101] a terminal associated with the orifice such that the terminal is in electrical communication with the second contact point; and

[0102] an electrical transmission device adapted for electrical communication between the terminal and an external connection for supplying electrical energy and / or data from a power source and / or data source external to the insulating window glass, wherein:

[0103] the orientation of the orifice is such that the first contact point directly or indirectly contacts the electrical component; and

[0104] the assembly comprises an elastic structure that is tensioned during the manufacture of the insulating window glass such that the first contact point is firmly held to the electrical component, and wherein the contact area of the first contact point is less than 1 cm 2 .

[0105] Thus, an insulating window glass unit provided with such an assembly is provided with a firm solderless electrical connection to an electrical component.

[0106] Preferably, the insulating window glass unit complies with EN 1279-3 and is airtight.

[0107] As is known to those skilled in the art, an insulating window glass comprises a cavity between a first window glass plate and a second window glass plate. Preferably, the cavity comprises an insulating gas. Preferably, the cavity comprises nitrogen or argon as the insulating gas.

[0108] An insulating window glass unit may comprise an additional window glass plate. For example, an insulating window glass unit comprising a single additional window glass plate (such that there are a total of three window glass plates) may be referred to as a "triple" insulating window glass unit or a "triple IGU". The additional window glass plate may be disposed between the first and second window glass plates, or on either side.

[0109] The first, second and any additional window glass plates can independently comprise a single window glass sheet or a laminated window glass sheet. Preferred window glass plates comprise a single sheet of soda-lime-silica glass, a single sheet of polycarbonate, and laminated glass comprising two or more sheets of glass, with an adhesive interlayer therebetween, preferably a polyvinyl butyral adhesive interlayer.

[0110] The first, second and any additional window glass plates can independently comprise a functional coating. Preferred functional coatings comprise, for example, low-emissivity, self-cleaning, infrared-reflective and solar control coatings.

[0111] Optional features of the first aspect of the invention can be applied to the third aspect of the invention in any combination. In particular:

[0112] In some embodiments, the contact member comprises an elastic barrel connector, and more preferably the contact member comprises a double-ended elastic barrel connector; and / or

[0113] In some embodiments, the terminal comprises at least one spring or elastic material; and / or

[0114] In some embodiments, the electrical transmission device comprises a threaded insert, preferably a threaded insert with a blind hole.

[0115] Although the insulated window glass unit disclosed herein can comprise a variety of electrical components, preferably, the electrical components comprise busbars, more preferably busbars for heating coatings or printed heating wires. In the case where the electrical components comprise busbars for heating coatings or printed heating wires, preferably, the assembly is adapted to transmit 230 V alternating current at at least 2.5 amperes, more preferably, the assembly is adapted to transmit 230 V alternating current at at least 5 amperes, and more preferably the assembly is adapted to transmit 230 V alternating current at at least 10 amperes. The assembly can be adapted to provide such transmission by using a plurality of contact members, for example, 4 contact members can be used.

[0116] According to a fourth aspect of the invention, there is provided a method of manufacturing an insulated window glass unit according to the third aspect, comprising the steps of:

[0117] i) providing an assembly according to the first aspect of the invention and one or more spacer frame workpieces;

[0118] ii) connecting the assembly and one or more spacer frame workpieces together to provide a spacer frame;

[0119] iii) providing a first sheet of window glass material comprising electrical components on a first major surface, and a second sheet of window glass material;

[0120] iv) arranging the second sheet of window glass material in a face-to-face arrangement with the first sheet of window glass material, with the spacer frame therebetween to provide a cavity; and

[0121] v) Apply a sealant around the periphery of the spacer frame between the first window glass plate and the second window glass plate.

[0122] Preferably, before the step of applying the sealant, the electrical transmission device is reversibly shielded, covered, or masked so that it can be exposed after the cavity is sealed with the sealant.

[0123] As disclosed herein, when a parameter is expressed as ranging from a first value to a second value, the range includes the first value and the second value. Similarly, when a parameter is expressed as being between a first value and a second value, the range includes the first value and the second value.

[0124] The present invention will now be described in conjunction with the accompanying drawings, in which:

[0125] Figure 1 A first assembly suitable for being arranged between a first window glass plate and a second window glass plate is depicted.

[0126] Figure 2 A first assembly as viewed along arrow A is depicted.

[0127] Figure 3 A perspective view of a second assembly suitable for being arranged between a first window glass plate and a second window glass plate is depicted.

[0128] Figure 4 Depicts Figure 3 a side view of the second assembly in

[0129] Figure 1 A first assembly 1 suitable for being arranged between a first window glass plate 21 and a second window glass plate 22 of an insulating window glass 3 is depicted. In this figure, the window glass sheets are represented by dashed lines. The first window glass plate 21 includes an electrical component 4 on its first main surface 211 facing the second window glass plate 22. In this figure, the electrical component 4 is represented by dashed lines.

[0130] The assembly 1 includes a body 5, which includes a first wall 51 to face the first window glass plate 21 and a second wall 52 to face the second window glass plate 22. In this embodiment, the assembly 1 further includes a contact receiving member 6 with an orifice 7, where the orifice 7 is suitable for receiving a contact 8 including a first contact point 81 and a second contact point 82.

[0131] The orientation of the orifice 7 is such that when the assembly 1 is arranged between the first window glass plate 21 and the second window glass plate 22, the first contact point 81 directly or indirectly contacts the electrical component 4.

[0132] The assembly includes an elastic structure, which is tensioned during the manufacturing process of the insulating window glass 3 so that after the insulating window glass 3 is manufactured, the first contact point 81 is firmly held to the electrical component 4. In Figure 1In the illustrated embodiment, the contact 8 includes an elastic structure, depicted here as a spring.

[0133] In Figure 1 the illustrated embodiment, the assembly further includes a terminal 9, where the terminal 9 is associated with the orifice 7 such that the terminal is in electrical communication with the second contact point 82.

[0134] In Figure 1 the illustrated embodiment, the assembly further includes an electrical transmission device adapted to be in electrical communication with an external power source and / or data source outside the insulating window glass. In Figure 1 the embodiment, the electrical transmission device includes a connecting element 11 and a wire 12.

[0135] Also in Figure 1 it is shown that the body 5 of the embodiment is adapted to form part of a perimeter spacer frame for the insulating window glass.

[0136] The contact 8 is shown in Figure 1 as a floating contact, comprising a bent wire or spring with contact portions at both ends. Such a contact can be provided using a double-ended elastic barrel contact.

[0137] In Figure 1 it is shown that the arrow A indicates the Figure 2 orientation of the embodiment in

[0138] Figure 2 Depicted is Figure 1 the first embodiment of the present invention shown in Figure 1 with the orientation according to the arrow A in Figure 2 In Figure 1 similar reference numerals are used as in Figure 2 and the contacts and window glass sheets are omitted for clarity. As can be seen from

[0139] Figure 3 and Figure 4Depicts a second assembly 100 adapted to be disposed between a first window glass plate and a second window glass plate of an insulating window glass. The assembly 100 includes a body 105 and a contact receiving member 106 including an orifice 107, where the orifice 107 is adapted to receive a contact. As Figure 2 shown, the shape of the contact receiving member 106 is not particularly limited as long as it should include an orifice 107 adapted to insert a contact 108. The orientation of the orifice 107 is such that when the assembly 100 is disposed between the first window glass plate and the second window glass plate, a first contact point of the contact directly or indirectly contacts an electrical component.

[0140] Figure 3 The assembly in contains an elastic structure that is tensioned during the manufacturing process of the insulating window glass such that after manufacturing the insulating window glass, the first contact point is firmly held to the electrical component, which is achieved by the contact 108 that includes a double-ended elastic barrel contact (pogo pin).

[0141] In Figure 3 and Figure 4 the illustrated embodiment, the body 105 is formed as a spacer frame corner connector with connecting arms 113 adapted to cooperate with a spacer frame profile and form part of a peripheral spacer frame of the insulating window glass, in this case a corner key. The edges of the connecting arms 113 are serrated to improve the fit and cooperation (especially fixation) in the spacer frame.

[0142] The present invention will now be described with reference to an exemplary assembly and an exemplary insulating window glass including the exemplary assembly.

[0143] The corner key body is produced by 3D printing and terminals and contacts are inserted to provide the assembly. In this case, the terminals are L-shaped terminals including bent brass sheets, the contacts are double-ended elastic barrel contacts, i.e., "Pogo Pin" from N&H Technology GmbH, and the electrical transmission device includes threaded inserts with blind screw holes. The assembly is connected with spacer bars, two conventional corner keys, and another corner key assembly according to the present invention to provide a spacer frame. Then the spacer frame is disposed between two window glass plates. The window glass plates include window glass, and one window glass plate is provided with a conductive coating (fluorine-doped tin oxide) and a pair of bus bars. The corner key assembly is designed such that when the spacer frame is located between the glass plates, the contacts are aligned with the bus bars. The double-ended elastic barrel contacts are tensioned by the weight of the glass plates such that the contacts are firmly held to the terminals and the bus bars. The threaded inserts are masked with removable masking screws, then the insulating window glass is sealed and the cavity is filled with argon. Then the removable masking screws are removed to provide accessible connection to the insulating window glass unit. The provided insulating window glass is tested and shown to comply with EN 1279-3. The firmness of the contacts is tested by applying a force to the window glass plates.

[0144] Reference Signs

[0145] 1 Assembly

[0146] 3 Isolation Window Glass

[0147] 4 Electrical Component

[0148] 5 Main Body

[0149] 6 Contact Receiving Part

[0150] 7 Orifice

[0151] 8 Contact

[0152] 9 Terminal

[0153] 11 Connecting Element

[0154] 12 Electric Wire

[0155] 13 Connecting Arm

[0156] 21 Window Glass Plate

[0157] 22 Window Glass Plate

[0158] 51 Wall

[0159] 52 Wall

[0160] 81 Contact Point

[0161] 82 Contact Point

[0162] 100 Assembly

[0163] 105 Main Body

[0164] 106 Contact Receiving Part

[0165] 107 Orifice

[0166] 108 Contact

[0167] 113 Connecting Arm

[0168] 211 Main Surface

Claims

1. An assembly adapted to be arranged between a first window glass plate and a second window glass plate of an insulating window glass, wherein the first window glass plate comprises an electrical component on a first main surface facing the second window glass plate, the assembly comprising: A body comprising a first wall to face the first window glass plate and a second wall to face the second window glass plate; and A contact receiving member comprising an orifice, Wherein: The orifice is adapted to receive a contact member comprising a first contact point and a second contact point; The orientation of the orifice is such that when the assembly is arranged between the first window glass plate and the second window glass plate, the first contact point is positioned to be adapted to contact the electrical component directly or indirectly; and The assembly comprises an elastic structure that is tensioned during the manufacture of the insulating window glass such that after the manufacture of the insulating window glass, the first contact point is firmly held directly or indirectly to the electrical component; and wherein The contact area of the first contact point is less than 1 cm 2 .

2. The assembly according to claim 1, further comprising a contact member comprising a first contact point and a second contact point, wherein the contact member is at least partially located within the orifice, preferably, the contact member comprises an elastic barrel contact member, more preferably, the contact member comprises a double-ended elastic barrel contact member.

3. The assembly according to claim 2, wherein the elastic barrel contact member exerts an elastic force of 25 grams to 500 grams, more preferably, the elastic barrel contact member exerts an elastic force of 50 grams to 250 grams, more preferably, the elastic barrel contact member exerts an elastic force of 80 grams to 150 grams.

4. The assembly according to any of the preceding claims, further comprising a terminal associated with the orifice such that when the assembly comprises a contact member, the terminal is in electrical communication with the second contact point, preferably, the terminal comprises at least one spring or elastic material.

5. The assembly according to any of the preceding claims, further comprising an electrical transmission device adapted to be in electrical communication with an external power source and / or data source outside the insulating window glass, preferably, the electrical transmission device does not extend externally from the body.

6. The assembly according to claim 5, wherein the electrical transmission device comprises a conductive insert, preferably, the conductive insert comprises a threaded conductive insert and / or a conductive insert with a blind hole, more preferably, the conductive insert comprises a threaded conductive insert with a blind hole.

7. The assembly according to any of the preceding claims, wherein the body is a spacer frame assembly, preferably, the body is a spacer frame connector, more preferably, the body is a spacer frame corner connector.

8. The assembly according to claim 7, wherein the interrupted length of the body is less than 10 centimeters, preferably less than 5 centimeters, more preferably less than 2 centimeters.

9. The assembly according to any of the preceding claims, wherein the body comprises polyethylene (PE), polycarbonate (PC), polystyrene, polybutadiene, polyacrylonitrile, polyester, polyurethane, polymethyl methacrylate, polyacrylate, polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene (PP), acrylonitrile - butadiene - styrene (ABS), acrylate - styrene - acrylonitrile (ASA), acrylonitrile - butadiene - styrene polycarbonate (ABS / PC), styrene - acrylonitrile (SAN) - containing, polyethylene terephthalate polycarbonate (PET / PC), polybutylene terephthalate polycarbonate (PBT / PC), or a copolymer or derivative or mixture thereof.

10. A method of manufacturing an assembly according to any of the preceding claims, wherein the body and / or the contact receiving member is injection - molded, extruded or 3D - printed, preferably, the contact receiving member is an essential part of the body, and the body and the contact receiving member are injection - molded or 3D - printed, most preferably, the contact receiving member is an essential part of the body, and the body and the contact receiving member are 3D - printed.

11. An insulating window glass, comprising a first window glass plate, a second window glass plate, and an assembly located between the first window glass plate and the second window glass plate, wherein the first window glass plate comprises an electrical component on a first major surface facing the second window glass plate, and wherein the assembly comprises: a body, which comprises a first wall facing the first window glass plate and a second wall facing the second window glass plate; a contact receiving member comprising an orifice; a contact piece comprising a first contact point and a second contact point, wherein the contact piece is at least partially within the orifice; a terminal associated with the orifice such that the terminal is in electrical communication with the second contact point; and an electrical transmission device adapted for electrical communication between the terminal and an external power source and / or data source outside the insulating window glass, wherein: the orientation of the orifice is such that the first contact point directly or indirectly contacts the electrical component; and the assembly comprises an elastic structure, which is tensioned during the manufacture of the insulating window glass such that the first contact point is firmly held directly or indirectly to the electrical component, wherein The contact area of the first contact point is less than 1 cm 2 .

12. The insulating window glass according to claim 11, wherein the contact piece comprises an elastic barrel connector, more preferably, the contact piece comprises a double - ended elastic barrel connector.

13. The insulating window glass according to claim 11 or 12, wherein the terminal comprises at least one spring or elastic material, and / or wherein the electrical transmission device comprises a threaded conductive insert, preferably a threaded conductive insert with a blind hole.

14. The insulating window glass according to any one of claims 11 to 13, wherein the electrical component comprises a bus bar, preferably a bus bar for a heating coating.

15. A method of manufacturing an insulating window glass according to any one of claims 11 to 14, comprising the steps of: i) providing an assembly according to the first aspect of the present invention and one or more spacer frame workpieces; ii) connecting the assembly and the one or more spacer frame workpieces together to provide a spacer frame; iii) providing a first sheet of window glass material and a second sheet of window glass material each including an electrical component on a first major surface; iv) disposing the second sheet of window glass material and the first sheet of window glass material in a face-to-face arrangement with a spacer frame therebetween to provide a cavity; and v) applying a sealant around a perimeter of the spacer frame between the first window glass plate and the second window glass plate.

16. The method according to claim 15, wherein prior to the step of applying the sealant, the electrical transmission device is reversibly masked, covered or overlaid such that it is exposed after the cavity is sealed with the sealant.

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