Connection socket, roof-covering element having a connection socket, and production method for a connection socket and a solar roof-covering element

Abstract

A connection socket (1, 1', 1") comprises: a housing (2, 2', 2''), which has a base portion • (4) and a longitudinal portion (5) extending perpendicularly from the base portion; and two electrical lines (9, 9') arranged in the • base portion (4). The longitudinal portion (5) has guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 14l, 14', 14a', 14b', 14c', 14d', 14e', 14'', 14a'', 14b'', 14c'', 14d'', 14e'', 14f'', 14g'') extending perpendicularly from the base portion (4). Two contact strips (8, 8') that are arranged in the base portion are oriented parallel to the main surface of the base portion and to one another, are each electrically connected to an electrical line (9, 9') and are fastened at one end.

Description

[0001] Connection base, roof covering element with connection base, and manufacturing process for a connection base and a solar roof covering element

[0002] Technical field

[0003] The invention relates to a connection base, a roof covering element with a connection base and a manufacturing method for a connection base and a solar roof covering element.

[0004] State of the art

[0005] In the prior art, solar roofing elements are known which consist of a flat base body, for example, a roof tile or roofing stone, and a solar module, such as a photovoltaic module, mounted on it. The surface of the solar module can be covered with a transparent, weather-resistant material or with a protective body made from this material, such as a plastic or glass panel. The advantage of using such solar roofing elements, which directly form the roof covering, for the construction of a solar roof system lies in their simple and aesthetically pleasing integration into the existing roof structure without the need for separate support systems or elements.Practical challenges arise from the relatively small size of such a system when installing it on the roof, as all solar roofing elements must be reliably and compliant with standards when contacting and interconnecting each other.

[0006] From DE 10 2018 002 476 A1, a solar roofing element is known with a flat support body having a bore perpendicular to its base surface. The element includes a connection base that is inserted from below through the bore and held on the top surface of the support body by a locking element. The connection base has a flat top surface containing two electrical conductors that terminate on the top surface as contact elements. For manufacturing, a flat solar module is arranged on the top surface of the support body. The solar module has back-contact elements on its underside, which are in physical contact with the contact elements. The contact elements and / or back-contact elements are coated with solder.To establish a permanent contact, energy can be applied to the contact point using a soldering tool inserted into the terminal base via at least one channel accessible through an access opening on the underside of the socket. The contact elements are held in the terminal base either rigidly or with axial play, initially protruding slightly from the base before the solar module is mounted on the top surface. In both configurations, the dimensioning and positioning of the components require relatively high manufacturing precision to ensure a sufficiently reliable contact. Furthermore, the physical dimensions of the terminal base and its axial positioning in the bore, using the locking mechanism, must always be sufficiently accurate to the thickness of the mounting surface.The distance between the base and the top surface of the support body must be adjusted. Since the locking element engages the connection base externally on the top of the base body by means of a force-fit or form-fit, there is also a very low tolerance with regard to the radial fit of the connection base and the diameter of the bore.

[0007] Disclosure of the invention

[0008] The invention is based on the objective of avoiding the disadvantages described above. In particular, it aims to provide a connection base, a roofing element with a connection base, and a manufacturing method for a connection base and a solar roofing element, which enable flexible use of the connection base with a tolerance for support bodies of variable thicknesses. According to the invention, this objective is achieved by a connection base according to claim 1, a roofing element according to claim 11, a manufacturing method for a connection base according to claim 13, and a manufacturing method for a solar roofing element according to claim 15. Advantageous embodiments of the invention are specified in the dependent claims.

[0009] The core of the invention comprises a connection base comprising a housing with a base section and a longitudinal section extending perpendicularly from the base section, as well as at least two electrical conductors arranged in the base section, wherein the connection base has at least one connecting opening between the base section and the longitudinal section, and the longitudinal section has guide surfaces arranged on or adjacent to the surface of the connecting opening(s) and extending perpendicularly from the base section, and at least two contact strips are arranged in the base section and are aligned parallel to the base surface of the base section and parallel to each other.wherein the contact strips are each directly or indirectly electrically connected to at least one electrical conductor and fixed at one end, and extend from this end to the edge of the connection opening(s) and from there perpendicularly from the base section along at least one guide surface, wherein the longitudinal section has an opening at its end furthest from the base section, and the contact strips are each bent in a U-shape below or flush with the opening and extend back along an opposite guide surface towards the base section. A housing according to the invention has a volume and defined dimensions, wherein the housing can have either a closed wall or partially open, grid-, fabric- or strut-like outer walls.The housing can be designed with base or top surfaces. Independently of this, the housing can have further openings. In the case of an indirect electrical connection, further electrical or electronic components are connected between the contact strip and the electrical conductor. The invention has the advantage that flexible use of the connection base for support bodies of variable thicknesses is possible. Since the contact strips are bent in a U-shape in the longitudinal section with their unfixed end ending open within the longitudinal section, their course within the longitudinal section and the distance of the egg-shaped bend from the base section can be easily changed, and the position of a possible contact point between the contact strip and corresponding contacts of another component can be freely selected within the given clearance.

[0010] The change in the spatial extent of the contact elements is controlled by means of guide surfaces. In a simple embodiment, each contact strip is assigned at least three guide surfaces, two of which are aligned parallel to the two short sides of the contact strip and positioned at a distance from each other on both sides of the contact strip, and one guide surface is arranged parallel to a long side of the contact strip. This ensures the stable alignment of the contact strips and any forming tool that may engage in the longitudinal section as their course and the position of the egg-shaped bend change.In a version with enhanced guidance reliability, each contact strip is assigned four guide surfaces. Two of these guide surfaces are aligned parallel to the two long sides of the contact strip and positioned at a distance from each other on both sides of the strip. Two guide surfaces are aligned parallel to the two short sides of the contact strip and positioned at a distance from each other on both sides of the strip. This enables reliable guidance even with higher manufacturing tolerances of the contact strips and / or the forming tool.In another embodiment, each contact strip is assigned six guide surfaces. Four of these guide surfaces are aligned parallel to the two long sides of the contact strip and arranged in pairs on both sides of the strip at a distance from each other. Two guide surfaces are aligned parallel to the short sides of the contact strip and arranged on both sides of the strip at a distance from each other. This also enables reliable guidance while allowing for higher manufacturing tolerances of the contact strips and / or the forming tool. Furthermore, the guide surfaces on both sides of the long sides do not need to be continuous, which allows for a simpler design while maintaining the same level of guidance control.

[0011] By having the contact strips extend from their end opposite the fixed end to the edge of the connection opening and from there perpendicularly from the longitudinal section into the base section, the unfixed ends of the contact strips are stabilized in their position in the connection base, thus providing, for example, transport protection.

[0012] Because the contact strips are longer than the guide surfaces, the use of the connection base is also ensured for support bodies with a correspondingly large thickness.

[0013] By having a flange surface on the base section that extends radially outwards, at least partially, from the vertically adjacent longitudinal section, the connection base can be axially fixed in one direction of movement against another component – ​​such as a roofing element – ​​for example, when the connection base is inserted into a bore in the other component with its longitudinal section. For insertion into a bore, the longitudinal section is preferably designed as a hollow cylinder. By having the hollow cylinder slotted once or multiple times along its axis, starting from the end furthest from the base section, or by providing it with at least one recess, a frictional connection of the hollow cylinder is enabled when it is inserted into a bore, since the slotted or recessed areas are more easily deformable.Furthermore, an area formed by a slot or recess can serve to create a snap connection with a surrounding component by being equipped at its ends furthest from the base section with at least one snap hook extending radially outwards.

[0014] A further key element of the invention is a roofing element with a flat support body comprising a base and a top surface, as well as a bore extending between them, into which a connection base according to the invention is inserted along its longitudinal section. The connection base, with its contact strips arranged in the longitudinal section, enables the establishment of an electrical connection between the electrical conductors and an electrical component arranged on the top surface, for example, a photovoltaic module.For insertion or insertion into the bore, the longitudinal section is designed as a hollow cylinder which, starting from its end furthest from the base section, is slotted once or several times or provided with at least one recess over a part of its length along the cylinder axis, wherein at least one area formed by a slot or a recess at its ends furthest from the base section is formed with at least one snap hook extending radially outwards.By simultaneously forming a radially outward-extending shoulder in the end section of the bore that opens into the top surface of the support body, a simple and secure connection between the roofing element and the connecting base is achieved. This is because the inserted connecting base is fixed in the insertion direction by the flange resting against the underside of the support body and simultaneously in the opposite direction by the engagement of the snap hooks in the shoulder. In this design, the connecting base can be easily used for support bodies of varying thicknesses, as only the drilling depth of the shoulder needs to be adjusted.

[0015] A further aspect of the invention is a manufacturing method for a terminal base with a housing comprising a base section open on one side and a longitudinal section extending perpendicularly from one side opposite this side, as well as at least two electrical conductors arranged in the base section, wherein the terminal base has at least one connecting opening between the base section and the longitudinal section, and the longitudinal section has guide surfaces arranged on or adjacent to the surface of the connecting opening(s) and extending perpendicularly from the base section, and wherein at least two contact strips are arranged in the base section and aligned parallel to the base surface of the base section and parallel to each other.each electrically connected to at least one electrical conductor and fixed at one end, extending from this end across the connection opening or openings, each contact strip having at least three guide surfaces, one of which is aligned parallel to and adjacent to a longitudinal side of the contact strip, and two of which are aligned parallel to the short sides of the contact strip and arranged at a distance from each other on both sides of the contact strip, wherein a pressing tool with at least one punch enters the terminal socket from the open side of the base section and thereby bends at least one contact strip at a right angle from the edge of the connection opening or openings and enters the longitudinal section,The contact strip is displaced, and during the insertion movement, the contact strip deforms and aligns itself along the guide surfaces in such a way that it extends perpendicularly from the edge of the connection opening along a guide surface, is bent in a U-shape above the end of the plunger, and extends back towards the base section along an opposite guide surface. This method allows for simple pre-assembly of the connection base. Because the contact strips are bent in a U-shape in the longitudinal section with their unfixed end open within the longitudinal section, their extension from the base section can be easily lengthened or shortened, thus allowing the position of a potential contact point to corresponding contacts of another component within the given clearance to be freely selected.

[0016] For delivery of the connection base, the at least one contact strip is secured for transport by having the at least one punch of the pressing tool designed with a shoulder cut. During the insertion movement, this cut deforms the at least one contact strip in such a way that its end opposite the fixed end extends to the edge of the connection opening and from there perpendicularly from the longitudinal cut into the base section. In this state, the free end of the contact strip is hooked into the base section and thus secured for transport.

[0017] Finally, a further key aspect of the invention comprises a manufacturing method for a solar roofing element with a planar support body having a base and a top surface, as well as a bore extending between them, and with a connection base having a housing with a base section and a longitudinal section extending perpendicularly from it, wherein the base section is formed with a flange surface extending at least partially radially outwards from the perpendicularly adjacent longitudinal section, wherein the bore in its end section opening into the top surface of the support body is formed with a shoulder extending radially outwards, and the longitudinal section is designed as a hollow cylinder which, starting from its end furthest from the base section,The longitudinal section is slotted once or multiple times along its length along the cylinder axis, or is provided with at least one recess, and at least one area formed by a slot or recess at its end furthest from the base section is provided with at least one snap hook extending radially outwards. The longitudinal section is inserted into the bore from the end opposite the shoulder, and the at least one snap hook is initially pressed elastically radially inwards until, with the axial insertion movement, it expands elastically radially outwards again from the level of the shoulder and engages in the shoulder. Simultaneously, the flange surface rests against the underside of the support body, and the axial insertion movement ends. In this embodiment, the connection base can be easily used for support bodies with variable thicknesses while maintaining a constant length of the longitudinal section.by adjusting the drilling depth of the heel in each case.

[0018] The adaptation of the course and position of the U-shaped bend of the contact strips is achieved in a structurally simple manner by having the base section open on the side opposite the longitudinal section, the housing having at least two electrical conductors arranged in the base section, the connection base having at least one connecting opening between the base section and the longitudinal section, and the longitudinal section having guide surfaces arranged on or adjacent to the surface of the connecting opening(s) extending perpendicularly from the base section, and wherein at least two contact strips are arranged in the base section and aligned parallel to the base surface of the base section and parallel to each other.each electrically connected to at least one electrical conductor and fixed at one end, extending from this end to the edge of a connection opening and from there perpendicularly from the base section along a guide surface, the longitudinal section having an opening at its end furthest from the base section, and the contact strips below or terminating at the opening being each U-shaped and extending back along an opposite guide surface towards the base section. A pressing tool with at least one punch moves from the open underside of the base section into the connection base and the longitudinal section, displacing at least one contact strip from the point where the U-shaped bend is reached, the contact strip being deformed during the insertion movement and realigning itself along the guide surfaces.until it comes into contact with a counter-punch or with back contacts of a solar module arranged on the top surface of the support body at a point further away from the base section than the point of the original U-shaped bend, where a new U-shaped bend forms before the insertion movement stops.

[0019] The integration of a solar module is achieved in a structurally simple manner by arranging a solar module on the top surface of the support body, which is formed on its underside with at least two back contacts which are aligned with the contact strips, the back contacts are coated with an electrically conductive adhesive or a conductive adhesive is applied between the contact strips and the back contacts before the contact strips and back contacts are brought into contact with each other.In an alternative embodiment, the contact strips and the back contacts are formed from a weldable metal or a weldable metal alloy, such as aluminum, copper, or brass, and a welding tool with at least one tip is inserted into the longitudinal section from the open side of the base section, whereby energy is transferred to the contact strip and the back contact in contact with it via the at least one tip. In a further alternative embodiment, the contact strips and / or the back contacts are formed from a solder material or are coated with solder, and a soldering tool with at least one tip is inserted into the longitudinal section from the open side of the base section, whereby heat is transferred via the at least one tip to at least one contact strip or to it and the back contact in contact with it.For fine-tuning the contact strips and applying heat, either a single combined pressing and welding or soldering tool can be used, or two separate tools for adjustment and welding or soldering can be used successively. To improve energy efficiency and process reliability, an induction soldering tool is used to apply heat. Since the induction soldering tool can be inserted into the longitudinal section and therefore positioned at a defined distance from the contact strip, an optimal effective distance is always ensured. For the purposes of this invention, a solar module is understood to mean any electrical component with which sunlight can be directly converted into electrical energy, in particular photovoltaic modules consisting of one or more silicon or thin-film solar cells.

[0020] Further advantages of the invention are illustrated below, together with a description of preferred embodiments of the invention, with reference to the figures. The figures show:

[0021] Fig. 1 shows a perspective exploded view of a connection base.

[0022] Fig. 2 shows a perspective view of the connection base according to Fig. 1 with cut-off punches of a pressing tool.

[0023] Fig. 3 shows a perspective view of the inner components of the connection base according to Fig. 1 with contact strips pre-pressed into a transport state, and cut-off punches of a pressing tool.

[0024] Fig. 4 shows a perspective view of the connection base according to Fig. 1 with contact strips pre-pressed into a transport state.

[0025] Fig. 5 shows a top view of the connection base according to Fig. 1.

[0026] Fig. 5a shows a modification of the connection base according to Fig. 1 in top view.

[0027] Fig. 5b shows a further modification of the connection base according to Fig. 1 in top view.

[0028] Fig. 6 is a schematic sectional view of the connection base according to Fig. 1 with a partial view of the support body of a roofing element. Fig. 7 is another schematic sectional view according to Fig. 6, in which the connection base is inserted into a bore of the support body.

[0029] Fig. 8 shows another schematic sectional view according to Fig. 7, in which two punches of a press tool are partially inserted into the longitudinal section of the connection base.

[0030] Fig. 9 shows another schematic sectional view according to Fig. 8, in which the punches are fully inserted into the longitudinal section and the contact strips are simultaneously brought into contact with a counter punch.

[0031] Fig. 10 shows another schematic sectional view according to Fig. 7, in which a partially shown photovoltaic module is arranged on the top surface of the support body and the tool tips of a soldering tool are inserted into the longitudinal section of the connection base.

[0032] Fig. 1 shows the terminal base 1 in a perspective exploded view. The terminal base comprises the housing 2 and the printed circuit board 3. The housing 2 has a flat base section 4 and a longitudinal section 5 extending perpendicularly downwards from it. Two connecting openings 6 and 6' are formed between the base section 4 and the longitudinal section 5, separated from each other by the web 7. The contact strips 8 and 8' are arranged on the printed circuit board 3. The contact strips 8 and 8' are attached to the printed circuit board 2 at their ends opposite the electrical leads 9 and 9' and are electrically connected to the leads 9 and 9' directly or indirectly via conductor tracks on the printed circuit board 2 (not shown). The circuit may include further electrical or electronic components. The contact strips 8 and 8' are aligned parallel to the base surface of the base section and parallel to each other.Figure 2 shows the terminal base 1 and the partially visible punches 10 and 10' of a pressing tool, which engage the contact strips 8 and 8' from the open side of the base section 4. In the state shown in Figure 2, the contact strips 8 and 8' extend from the ends opposite the electrical leads 9 and 9', where they are fixed, across the connecting openings 6 and 6'. For pre-assembly of the terminal base 1, the punches 10 and 10' extend a short distance into the longitudinal section 5 from the open side of the base section 4, bending the contact strips 8 and 8' at right angles towards the longitudinal section 5 at the edges of the connecting openings 6 and 6'. Figure 3 shows the circuit board 3 without the housing 2, with the contact strips 8 and 8' in this pre-assembled state.The contact strips 8 and 8' are bent at right angles at their fixed ends towards the longitudinal section 5 and extend into the longitudinal section 5. Within the longitudinal section 5, the contact strips 8 and 8' are bent in a U-shape, forming the subsections 8a and 8a', which are aligned parallel to the base surface of the base section 4. From these subsections 8a and 8a', the contact strips 8 and 8' extend back towards the base section 4. At their ends opposite the fixed ends, they are bent again at the edge of the circuit board 3 and extend along the circuit board 3 a short distance into the base section. In this way, the contact strips 8 and 8' are also stabilized at their ends not attached to the circuit board 3, which are oriented towards the electrical conductors 9 and 9', as they are hooked onto the circuit board 3.This serves in particular as transport protection. The shaping of the contact strips 8 and 8' shown in Fig. 3 is achieved by a corresponding contouring of the punches 10 and 10', which for this purpose are each formed with a shoulder section 11 and 11'. Fig. 4 shows the connection base 1 with the contact strips in the pre-assembled state according to Fig. 3. The longitudinal section 5 of the housing 2 is formed by the circularly arranged struts 12, 12', 12", 12'", 12'" and 12"'". The struts 12, 12', 12", 12'", 12'" and 12"'" form a hollow cylindrical arrangement, in which the remaining sections of the struts 12, 12', 12", 12"', 12"' and 12"'" are formed by recesses arranged between them along the cylinder axis. The struts 12"" and 12" are designed with snap hooks 13 and 13' extending radially outwards from the longitudinal section.Sections 8a and 8a' of the contact strips 8 and 8' are flush with the upper end of the web 7, the end furthest from the base section 4. Fig. 5 shows the connection base 1 in a top view. The web 7 separates the connecting openings 6 and 6' formed between the base section 4 and the longitudinal section 5. Lateral extensions on both sides of the web 7 form an H-shaped guide track for the contact strips 8 and 8' (in plan view). Sections 8a and 8a' of the contact strips 8 and 8' are each flush-mounted by six guide surfaces 14 to 14e and 14f to 1.During the pre-assembly of the terminal base 1, the punches 10 and 10' extend from the open side of the base section 4 a short distance into the longitudinal section 5, thereby bending the contact strips 8 and 8' at right angles towards the longitudinal section 5 at the edges of the connecting openings 6 and 6', whereupon the contact strips 8 and 8' at their ends facing the electrical conductors 9 and 9' rest against the guide surfaces 14 and 14g. Laterally, they are simultaneously guided in the guide surfaces 14a and 14e and 141 and 14g, respectively. At their opposite ends, away from the conductors 9 and 9' (where they are also attached to the circuit board 3), the contact strips 8 and 8' simultaneously contact the guide surfaces 14c and 14j, being guided laterally on this side in the guide surfaces 14b and 14d or 14k and 14i respectively.The insertion movement of the punches 10 and 10' ends as soon as the contact strips 8 and 8' abut the counter surface, whereby the partial sections 8a and 8a' are formed between the flat ends of the punches 10 and 10' and the counter surfaces. These sections are bent at substantially right angles, corresponding to the contour of the tool tips of the punches 10 and 10', in the direction of the guide surfaces 14 and 14g, and 14c and 14j, respectively. In the embodiment according to Figures 1 to 5, the counter surface (not shown) is arranged above the web 7 and aligned parallel to the base surface of the base section, so that the partial sections 8a and 8a' of the contact strips 8 and 8' are flush with the upper end of the web 7 furthest from the base section 4. Figure 5a shows a modified embodiment of the connection base according to Figures 1 to 5 in a top view.The terminal base 1' is designed with an H-shaped guide track (in plan view) for the contact strips 8 and 8', in which the sections 8a and 8a' of the contact strips 8 and 8' are each flush-mounted by three guide surfaces 14' to 14c' and 14d' to 14e'. In this embodiment, the web 7' of the housing 2' is considerably wider than in terminal base 1. Otherwise, terminal base 1' is designed like terminal base 1, which is why its other components are not numbered separately. Fig. 5b shows a further modified embodiment of the terminal base according to Figs. 1 to 5 in plan view. The connection base 1" is designed with an H-shaped guide track for the contact strips 8 and 8', in which the sections 8a and 8a' of the contact strips 8 and 8' are each flush enclosed by four guide surfaces 14" to 14d" and 14e" to 14h".In this embodiment, the web 7" of the housing 2' is considerably wider than that of the terminal base 1, and the extensions of the web 7" completely enclose the contact strips 8 and 8' with the guide surfaces 14" to 14c" and 14d" to 14g". Otherwise, the terminal base 1' is designed like the terminal base 1, which is why its other components are not numbered separately.

[0033] Figures 6 to 10 show the connection base 1 with the support body 15 of a roofing element, each in a schematic sectional view. The support body 15 is formed with the bore 16, which runs between the cover surface 17 and the base surface 18. The end section of the bore 16, which opens into the cover surface 17 of the support body 15, has a radially outwardly extending shoulder 19. The base section 4 of the connection base 1 has a flange surface 20 extending radially outward from the longitudinal section 5. To connect the connection base 1 to the support body 15, the longitudinal section 5 of the connection base 1 is inserted into the bore 16 from the end opposite the shoulder 19. The insertion direction is indicated by arrow A in Figure 6. Fig. 7 shows the connection base 1 in its mounted position, in which it is inserted into the bore 16.During the insertion process, the snap hooks 13 and 13' are initially pressed elastically radially inwards as they penetrate the bore 16. As soon as the snap hooks 13 and 13' reach the level of the shoulder 19 in the axial insertion direction A, they expand elastically radially outwards again and engage radially in the shoulder 19. The connection base 1 sits positively in the bore 16 of the support body 15 along its longitudinal section 4, with the flange surface 20 bearing against the base surface 18 and the snap hooks 13 and 13' engaging in the shoulder 19, thus locking in and against the insertion direction A. The connection base 1 can be used flexibly for support bodies with variable thicknesses, since only the drilling depth of the shoulder 19 needs to be adjusted to the position of the snap hooks 13 and 13', as shown in Fig. 7 by the double arrow B.The fine adjustment of the contact strips 8 and 8' is carried out with the connection base 1 mounted on the support body 15 by inserting a press tool with the punches 10" and 10"' into the longitudinal section 5, as shown in Fig. 8. The direction of entry is indicated in Fig. 8 by the two arrows C and C1. The inserting punches 10" and 10'" displace the contact strips 8 and 8' from the point they reach the subsections 8a and 8a', whereby the contact strips 8 and 8' deform and realign themselves along the guide surfaces 14 and 14c as well as 14g and 14j until a section of the contact strips 8 and 8' running along the contour of the tool tips of the punches 10" and 10"' comes into contact with the counter punch 21, as shown in Fig. 9.In this position, the contact strips 8 and 8' exhibit a new U-shaped bend in the area of ​​contact with the counter-punch 21. This bend is located at a position further away from the base section 4 than the position of the original U-shaped bend in the transport state of the connection base 1. Fig. 10 shows the connection base 1 with the photovoltaic module 22 arranged on the top surface 17 of the support body 15, which is only partially shown in Fig. 10. The photovoltaic module 22 is formed with the two return contacts 23 and 23', which are aligned with the contact strips 8 and 8'. The contact strips 8 and 8' and the return contacts 23 and 23' are each coated with solder. To establish an electrical connection between the photovoltaic module 22 and the connection base 1, the soldering tool with the tool tips 24 and 24' is inserted into the longitudinal section 5.After the tool tips 24 and 24' have come into contact with the contact strips 8 and 8', as shown in Fig. 10, heat is applied to the contact strips 8 and 8' and the back contacts 23 and 23' via the tool tips 24 and 24' of the soldering tool. This causes the solder coatings on the contact strips 8 and 8' and the back contacts 23 and 23' to liquefy and, after the heat is switched off, to form a solder joint. If an induction soldering tool is used, its tool tips are brought to a defined effective distance from the contact strips 8 and 8' before inductive energy is applied.For fine adjustment of the contact strips 8 and 8' and for making the soldered connection between the contact strips 8 and 8' and the back contacts 23 and 23', either a single combined pressing and soldering tool can be used, or two separate tools for adjustment and soldering can be used successively.

[0034] Reference symbol list

[0035] 1, r, i" connection socket

[0036] 2, 2', 2" housing

[0037] 3 circuit boards

[0038] 4 Basic section

[0039] 5 Longitudinal section

[0040] 6, 6' connecting opening

[0041] 7, 7', 7" Bridge

[0042] 8, 8' contact strip

[0043] 8a, 8a' Subsection

[0044] 9.9' Electrical line

[0045] 10, 10', 10", 10'" stamps

[0046] 11.1 L shoulder cut

[0047] 12, 12', 12", 12'", 12"",

[0048] 12”. Strut

[0049] 13, 13' Snap hook

[0050] 14a, 14b, 14c, 14d, 14e, 14f,

[0051] 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d',

[0052] 14e', 14", 14a", 14b", 14c'

[0053] 14d", 14e", 14f", 14g" guide surface

[0054] 15 supporting structures

[0055] 16 bore

[0056] 17 Cover area

[0057] 18 Floor area

[0058] Paragraph 19

[0059] 20 flange area

[0060] 21 countermarks

[0061] 22 photovoltaic modules

[0062] 23, 23' Return contact

[0063] 24, 24' Tool tip

Claims

Patent claims 1. A terminal base (1, 1', 1") comprising a housing (2, 2', 2") with a base section (4) and a longitudinal section (5) extending perpendicularly from the base section and at least two electrical conductors (9, 9') arranged in the base section (4), characterized in that the terminal base (1, 1', 1") has at least one connecting opening (6, 6') between the base section (4) and the longitudinal section (5) and the longitudinal section (5) has guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14') arranged on or adjacent to the surface of the connecting opening(s) (6, 6') or connecting openings (6, 6') extending perpendicularly from the base section (4). 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) and in the base section (4) at least two contact strips (8, 8') are arranged and are aligned parallel to the base surface of the base section (4) and parallel to each other,wherein the contact strips (8, 8') are each directly or indirectly electrically connected to at least one electrical conductor (9, 9') and fixed at one end and extend from this end to the edge of a connecting opening (6, 6') and from there perpendicularly from the base section (4) along at least one guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g), wherein the longitudinal section (5) has an opening at its end furthest from the base section (4) and the contact strips (8, 8') are below or flush with the opening each is bent in a U-shape and extends along an opposite guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) back towards the base section (4).

2. Connection base (1, 1', 1") according to claim 1, characterized in that each contact strip (8, 8') is assigned at least three guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g"), of which two guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d 14e“, 14f 14g“) parallel to the two short sides of the contact strip (8, 8') are aligned and are arranged at a distance from each other on both sides of the contact strip (8, 8') and a guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) is arranged parallel to a longitudinal side of the contact strip (8, 8').

3. Connection base (1, 1', 1") according to claim 2, characterized in that each contact strip (8, 8') is assigned four guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g), of which two guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) are aligned parallel to the two longitudinal sides of the contact strip (8, 8') and arranged at a distance from each other on both sides of the contact strip (8, 8') and two guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) are aligned parallel to the two short sides of the contact strip (8, 8') and are arranged at a distance from each other on both sides of the contact strip (8, 8').

4. Connection base (1, 1', 1") according to claim 2, characterized in that each contact strip (8, 8') is assigned six guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g), of which four guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) are aligned parallel to the two longitudinal sides of the contact strip (8, 8') and arranged in pairs on both sides of the contact strip (8, 8') at a distance from each other and two guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) are aligned parallel to the short sides of the contact strip (8, 8') and are arranged at a distance from each other on both sides of the contact strip (8, 8').

5. Connection base (1, 1', 1") according to one of claims 1 to 4, characterized in that the contact strips (8, 8') extend at their end opposite the fixed end to the edge of the connection opening (6, 6') and from there perpendicularly from the longitudinal section (5) into the base section (4).

6. Connection base (1, 1', 1") according to one of claims 1 to 5, characterized in that the contact strips (8, 8') have a greater length than the length of the guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“).

7. Connection base (1, 1', 1") according to one of claims 1 to 6, characterized in that the base section (4) has a flange surface (20) which extends at least partially radially outwards from the vertically adjacent longitudinal section (5).

8. Connection base (1, 1', 1") according to one of claims 1 to 7, characterized in that the longitudinal section (5) is designed as a hollow cylinder.

9. Connection base (1, 1', 1") according to claim 8, characterized in that the hollow cylinder, starting from its end furthest from the base section (4), is slotted one or more times over a part of its length along the cylinder axis or is provided with at least one recess.

10. Connection base (1, 1', 1") according to claim 9, characterized in that at least one area formed by a slot or a recess is provided at its ends furthest from the base section (4) with at least one snap hook (13, 13') extending radially outwards.

11. Roof covering element with a planar support body (15) having a base surface (18) and a cover surface (17), as well as a bore (16) running between them, characterized in that a connecting base (1, 1', 1") according to one of claims 1 to 10 is inserted into the bore (16) along its longitudinal section (5).

12. Roof covering element according to claim 11, characterized in that the bore (16) in its end section opening into the cover surface (17) of the support body (15) is formed with a radially outwardly extending shoulder (19) and the connecting base (1, 1', 1") is formed with the features of claims 7, 8, 9 and 10, wherein the flange surface (20) rests on the underside and wherein the at least one snap hook (13, 13') engages in the shoulder (19).

13. Manufacturing method for a terminal base (1, 1', 1") with a housing (2, 2', 2"), which has a base section (4) open on one side and a longitudinal section (5) extending perpendicularly from a side opposite this side, and at least two electrical conductors arranged in the base section (4), wherein the terminal base (1, 1', 1") has at least one connecting opening (6, 6') between the base section (4) and the longitudinal section (5), and the longitudinal section (5) has guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141) arranged on or adjacent to the surface of the connecting opening(s) (6, 6') and extending perpendicularly from the base section (4). 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g"), and wherein at least two contact strips (8,8') are arranged and aligned parallel to the base surface of the base section (4) and parallel to each other, each being electrically connected to at least one electrical conductor and fixed at one end, and each extending from this end across the connection opening (6, 6') or connection openings (6, 6'), wherein each contact strip (8, 8') is assigned at least three guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“), one of which is a guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) parallel to a longitudinal side of the contact strip (8, 8') adjacent to it and two guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a", 14b", 14c", 14d", 14e", 14f",14g”) are aligned parallel to the short sides of the contact strip (8, 8') and are arranged at a distance from each other on both sides of the contact strip (8, 8'), characterized in that a pressing tool with at least one, The plunger extends from the open side of the base section (4) into the connecting base (1, 1', 1") and thereby bends at least one contact strip (8, 8') at a right angle from the edge of the connecting opening (6, 6') or connecting openings (6, 6') and extends into the longitudinal section (5), displacing the contact strip (8, 8') and the contact strip (8, 8') deforms with the insertion movement and is guided along the guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e“, 14f“, 14g“) is aligned so that it extends perpendicularly from the edge of the connecting opening (6, 6') from the base section (4) along a guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) oriented parallel to the short side,above the end of the stamp, it is bent in a U-shape and extends along an opposite guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) back towards the base section (4).

14. Manufacturing method for a connection base (1, 1', 1") according to claim 13, characterized in that the at least one punch of the press tool is formed with a shoulder section (11, 11') and deforms the at least one contact strip (8, 8') with the insertion movement such that it extends at its end opposite the fixed end to the edge of the connection opening (6, 6') and from there extends perpendicularly from the longitudinal section (5) into the base section (4).

15. Manufacturing method for a solar roof covering element with a planar support body (15) having a base surface (18) and a cover surface (17), as well as a bore (16) extending between them, and with a connection base (1, 1', 1") having a housing (2, 2', 2") with a base section (4) and a longitudinal section (5) extending perpendicularly from it, wherein the base section (4) is formed with a flange surface (20) extending at least partially radially outwards from the perpendicularly adjacent longitudinal section (5), characterized in that the bore (16) in its end section opening into the cover surface (17) of the support body (15) has a radially outwards a shoulder (19) extending from the base section (4) and the longitudinal section (5) is designed as a hollow cylinder, which, starting from its end furthest from the base section (4), is slotted once or more along part of its length along the cylinder axis or is provided with at least one recess, and at least one area formed by a slot or a recess at its end furthest from the base section (4) is formed with at least one snap hook (13, 13') extending radially outwards, wherein the longitudinal section (5) is inserted into the bore (16) from the end opposite the shoulder (19), wherein the at least one snap hook (13, 13') is initially pressed elastically radially inwards until, with the axial insertion movement from the point where the level of the shoulder (19) is reached, it again extends elastically radially outwards and engages in the shoulder (19).whereupon the flange surface (20) simultaneously comes into contact with the underside of the support body (15), so that the axial insertion movement ends.

16. Manufacturing method for a solar roofing element according to claim 15, wherein the base section (4) is open on the side opposite the longitudinal section (5) and the housing (2, 2', 2") has at least two electrical conductors arranged in the base section (4), and the connection base (1, 1', 1") has at least one connecting opening (6, 6') between the base section (4) and the longitudinal section (5), and the longitudinal section (5) has guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a') arranged on or adjacent to the surface of the connecting opening (6, 6') or connecting openings (6, 6') extending perpendicularly from the base section (4). 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) and wherein at least two contact strips (8, 8') are arranged in the base section (4) and are aligned parallel to the base surface of the base section (4) and parallel to each other,each of which is electrically connected to at least one electrical conductor and fixed at one end, and extends from this end to the edge of a connecting opening (6, 6') and from there perpendicularly from the base section (4) along a guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g), wherein the longitudinal section (5) is connected at its end by the The base section (4) has an opening at its remote end, and the contact strips (8, 8') are each bent in a U-shape below or at the end of the opening and extend back towards the base section (4) along an opposite guide surface, each contact strip (8, 8') being assigned at least three guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14", 14a", 14b", 14c", 14d", 14e", 14f", 14g), of which at least one guide surface (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) is aligned parallel to a longitudinal side of the contact strip (8, 8') adjacent to it and has at least two guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c", 14d", 14e", 14f",14g”) are aligned parallel to the short sides of the contact strip (8, 8') and are arranged at a distance from each other, characterized in that a pressing tool with at least one punch enters the connection base and the longitudinal section (5) from the open side of the base section (4) and thereby displaces at least one contact strip (8, 8') from the point where the U-shaped bend is reached, and the contact strip (8, 8') is deformed during the insertion movement and along the guide surfaces (14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j, 14k, 141, 14', 14a', 14b', 14c', 14d', 14e', 14“, 14a“, 14b“, 14c“, 14d“, 14e“, 14f“, 14g“) realigns until it comes into contact with a counter-punch or with back contacts (23, 23 ') of a solar module arranged on the top surface (17) of the support body (15) at a point further away from the base section (4) than the point of the original U-shaped bend,where a new U-shaped bend forms before the entry movement stops.

17. Manufacturing method for a solar roofing element according to claim 16, wherein a solar module is arranged on the top surface (17) of the support body (15), the solar module being formed on its underside with at least two back contacts (23, 23') which are arranged in alignment with the contact strips (8, 8'), characterized in that the back contacts (23, 23') are coated with an electrically conductive adhesive or between the contact strips (8, 8') and the back contacts (23, 23 ') a conductive adhesive is applied before the contact strips (8, 8') and back contacts (23, 23 ') are brought into contact with each other.

18. Manufacturing method for a solar roofing element according to claim 16, wherein a solar module is arranged on the top surface (17) of the support body (15), the solar module being formed on its underside with at least two back contacts (23, 23') which are aligned with the contact strips (8, 8'), characterized in that the contact strips (8, 8') and the back contacts (23, 23') are formed from a weldable metal or a weldable metal alloy and that a welding tool with at least one tool tip (24, 24') is inserted from the open side of the base section (4) into the longitudinal section (5), wherein energy is introduced via the at least one tool tip (24, 24') into at least one contact strip (8, 8') and the back contact (23, 23') in contact with it.

19. Manufacturing method for a solar roofing element according to claim 16, wherein a solar module is arranged on the top surface (17) of the support body (15), the solar module being formed on its underside with at least two back contacts (23, 23') which are arranged in alignment with the contact strips (8, 8'), characterized in that the contact strips (8, 8') and / or the back contacts (23, 23') are formed from a solder material or are formed with a solder coating and that a soldering tool with at least one tool tip (24, 24') is inserted from the open side of the base section (4) into the longitudinal section (5), wherein heat is introduced via the at least one tool tip (24, 24') into at least one contact strip (8, 8') or into this and the back contact (23, 23') in contact with it.

20. Manufacturing method for a solar roofing element according to claim 19, characterized in that the soldering tool is an induction soldering tool.

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