Connection arrangement with a structural component

Abstract

Connection arrangement (1) with a multi-part or single-part structural component (2), wherein - the structural component (2) for receiving a threaded bushing (3) has a receiving opening (4) with an indentation (5), - the structural component (2) comprises at least two adjacent structural elements (2a, 2b) between which a limited cavity (2c) is formed, - the receiving opening (4) is formed in the area of ​​the cavity (2c) in the structural elements (2a, 2b), - in the area of ​​the receiving opening (4) a structural element (2b) has the indentation (5) such that the edge areas (4a) of the structural elements (2a, 2b) forming the receiving opening (4) are abutting each other, and - the threaded bushing (3) is formed with a threaded bushing shaft (3a) and with a threaded bushing head (3b) that is positively adapted to the indentation (5), characterized by the fact that - the threaded bushing head (3b) is materially bonded to the structural element (2) having the indentation (5), - a fastening sleeve (6) is provided which is designed to be slid onto the threaded bushing shaft (3a) of the threaded bushing (3) inserted into the receiving opening (4), - the fastening sleeve (6) is designed with a radially circumferential flange (6a) at its end, which rests against the structural component (2), and - the fastening sleeve (6) is materially connected to the structural component (2) when pushed onto the threaded bushing shaft (3a).

Description

[0001] The invention relates to a connecting arrangement with a multi-part or single-part structural component according to the preamble of patent claim 1.

[0002] A generic connection arrangement is known from DE 32 02 594 A1, in which a vehicle roof made of a composite material is connected to a body frame using special screws. This vehicle roof consists of an airtight and rainproof outer layer and a padding and / or decorative layer facing the vehicle interior to form a cavity filled with a central structural layer and a porous inner layer. Fastening openings for this connection arrangement are provided at particularly strategic points on the vehicle roof. In the area of ​​these fastening openings, impressions are provided to whose contour the screw head of the special screw is adapted. This special screw has, in addition to the screw head, a threaded bushing shaft with an external thread.To create a connection to the vehicle roof, a reinforcement threaded plate 21 is used, which is screwed onto the threaded bushing shaft of the special screw.

[0003] Furthermore, DE 603 ​​05 360 T2 discloses a connecting assembly for attaching a component to an aircraft structure using a rod having a head at one end and circumferential embossings consisting of a series of parallel and circular grooves at its opposite end. A sleeve is used to create a connection, which is crimped onto the embossing as a crimpable part.

[0004] DE 10 2011 086 543 A1 describes a connection arrangement in which a force introduction element is glued into a plastic component and another component is attached via this force introduction element. This force introduction element comprises a tubular shaft, one end of which has a plate-like head and the other opposite end of which has a truncated cone-shaped end section. The adhesive connection is realized via an adhesive layer in the area of ​​the truncated cone-shaped end section and in the area of ​​the plate-like head.

[0005] US 5 150 944 A discloses a connecting arrangement in which a threaded bolt is connected to a sandwich structure. This sandwich structure consists of two outer layers that form a cavity between them, which is filled with a core layer. The threaded bolt is inserted into a connecting region of the sandwich structure that has opposing indentations, each formed with a conical side wall and a flat bottom. The threaded bolt comprises a shaft that is formed with a thread at one end and with a flange that bears against the sandwich structure at the opposite end. To connect the threaded bushing to the sandwich structure, a screw nut is screwed onto the thread of the shaft so that both the flange and the screw nut each lie in such an indentation.

[0006] Furthermore, FR 2 229 284 A5 describes a fastener for attaching to a plasterboard. The fastener used is a screw with a threaded shank and a screw head. This screw extends completely through the plasterboard, and the connection is achieved by means of a plate-like nut screwed onto the threaded portion. At the same time, the screw head rests countersunk against a flange plate on the opposite side.

[0007] Finally, a connecting arrangement is also known from DE 103 05 015 A1, which describes a force introduction device for a structural component. This force introduction device is designed as a hybrid insert with a threaded sleeve fixed in a plastic structure, which is glued into a plate-shaped recess in the structural component for fixation.

[0008] Such connecting arrangements are preferably used in vehicle body construction, for example to screw a vehicle seat to a cross member.

[0009] The realization of the known connection arrangement according to DE 103 05 015 A1 requires a complex manufacturing process, in particular due to the production of the insert.

[0010] Finally, reference is made to US 8 186 901 B2 and DE 693 10 389 T2.

[0011] US 8 186 901 B2 describes a fastening arrangement with a first and second fastening element for a glass pane, which are mounted in a bore in the same. For this purpose, an insulator is first inserted into this bore, which contains a key hole. A pin with a head portion and a threaded shaft is inserted into this key hole as the first fastening element, which is screwed to the second fastening element inserted from the opposite side of the glass pane. For this purpose, this second fastening element consists of a head portion and a shaft portion inserted into the key hole, which has an inner bore into which the shaft of the first fastening element is screwed.

[0012] DE 693 10 389 T2 discloses mounting hardware for mounting insulating glass units consisting of two individual panes joined by a spacer frame to a supporting structure. These mounting hardware is mounted in holes in the inner pane facing the supporting structure and consists of two support plates that can be connected to each other via interlocking, pin-shaped connecting parts, for example, by screwing, thereby gripping the inner pane between them. The outer support plate has a threaded hole into which an anchor bolt can be screwed for anchoring to the supporting structure.

[0013] The object of the invention is to provide a connecting arrangement of the type mentioned at the outset which has a simple structure and can be produced cost-effectively and with minimal use of materials, but can nevertheless withstand high mechanical stresses.

[0014] This object is achieved by a connecting arrangement having the features of patent claim 1.

[0015] Such a connection arrangement with a multi-part or single-part structural component, in which - the structural component has a receiving opening and an indentation for receiving a threaded bush, - the structural component comprises at least two adjacent structural elements, between which a limited cavity is formed, - the receiving opening is formed in the region of the cavity in the structural elements, - in the area of ​​the receiving opening, a structural element has the indentation such that the edge regions of the structural elements forming the receiving opening abut one another, and - the threaded bushing is designed with a threaded bushing shaft and with a threaded bushing head that is positively adapted to the impression, is characterized according to the invention in that - the threaded bushing head is firmly bonded to the structural component having the indentation, - a fastening sleeve is provided which is designed to be pushed onto the threaded bushing shaft of the threaded bushing inserted into the receiving opening, - the fastening sleeve is designed with a radially circumferential flange at the end, which rests against the structural component, and - the fastening sleeve is firmly connected to the structural component when pushed onto the threaded bushing shaft.

[0016] With this connecting arrangement according to the invention, a highly effective force introduction into the structural component is achieved using a simple design, since an indentation is provided in the area of ​​the cavity that bridges the cavity, thereby ensuring direct force introduction via the threaded bushing into the structural elements of the structural component. A sleeve, typically used in such cavity structures to connect the walls or structural elements of the structural component that define the cavity, can be omitted.

[0017] The threaded bushing head is firmly bonded, for example, by means of an adhesive or welded joint, to the structural component bearing the indentation, thus enabling easy assembly. The adaptation of the threaded bushing head to the indentation ensures a high degree of frictional connection between the threaded bushing and the structural component.

[0018] The threaded bushing achieves a high moment support, which results from the length of the threaded bushing and the loads acting on its tip.

[0019] The assembly is quick and easy due to the few and simply constructed parts, i.e. the threaded bushing and the fastening sleeve, since in particular the fastening sleeve only needs to be pushed onto the threaded bushing shaft and the material connection with the structural component can be realized, preferably in a simple manner by means of an adhesive connection.

[0020] The threaded bushing can preferably be made of metal or of plastic with a metallic threaded insert.

[0021] The fastening sleeve is designed with a radially circumferential flange at its end, which rests against the structural component. This further increases the strength of the connection arrangement. Preferably, the fastening sleeve is designed with stiffening ribs that connect the flange to the outer surface of the fastening sleeve, thereby improving, in particular, the rigidity of the connection arrangement.

[0022] Furthermore, according to an advantageous development of the invention, a sleeve is provided on the threaded bushing shaft, which is enclosed by the fastening sleeve. The sleeve can be made of metal and the fastening sleeve of plastic, or vice versa, the sleeve of plastic and the fastening sleeve of metal. This prevents losses of the contact force due to the shear behavior of the plastic when mounting the fastening sleeve on the threaded bushing shaft of the threaded bushing.

[0023] Furthermore, the embodiment of the invention, according to which the fastening sleeve and the sleeve form a projection over the end face of the threaded bushing shaft, leads to increased rigidity, since by screwing a component onto the threaded bushing, this threaded bushing, the structural component and the fastening sleeve are pressed together.

[0024] In addition to an adhesive connection, a material-to-material connection as a weld is also possible for thermoplastics, for example if the fastening sleeve and the structural component are made of thermoplastics.

[0025] It is particularly advantageous if the structural component is designed as an FRP (fiber-reinforced plastic composite) sandwich structure. During the production of such an FRP sandwich structure, the indentation, which is shaped like a plate or trough, is created simultaneously, with the cavity being filled with a foam material as the core material of the FRP sandwich structure, which may, for example, be designed as a CFRP structure. The connection arrangement according to the invention prevents stress on this sandwich foam in the area of ​​the indentation.

[0026] Furthermore, according to a further development, the structural component can be manufactured from sheet metal parts, with the indentation being created by stamping the two structural elements together only after the structural component has been manufactured. The cavity of such a metallic structural component can also be filled with a foam material.

[0027] The invention is described in detail below using an exemplary embodiment with reference to the accompanying figures. They show: Fig. 1 a schematic section through a connecting arrangement according to the invention, and Fig. 2 a schematic plan view of the connection arrangement according to Fig. 1.

[0028] The connection arrangement 1 according to the Fig. 1 and Fig. 2 shows a structural component 2 manufactured as an FRP sandwich structure (e.g., made of CFRP), which is constructed from plate-shaped structural elements 2a and 2b to form a cavity 2c, wherein this cavity 2c is filled with a foam material. Furthermore, in the area of ​​this cavity 2c, there is a receiving opening 4 for receiving a metallic threaded bushing 3. Such a structural component 2 can also be manufactured in one piece with a cavity 2c.

[0029] This structural component 2 is manufactured with a plate-shaped or bowl-shaped indentation 5 located in the region of the receiving opening 4, which is formed by the structural element 2b and has a depth such that the edge region 4a of the receiving opening 4 formed by the structural element 2b in the region of the indentation 5 and the edge region 4a of the receiving opening 4 formed by the structural element 2a lie against one another.

[0030] The threaded bushing 3 inserted into this receiving opening 4 is rotationally symmetrical and consists of a threaded bushing head 3b and a threaded bushing shaft 3a having a threaded bore 3d and is inserted into the receiving opening 4 such that the threaded bushing head 3b is received by the indentation 5. This threaded bushing head 3b is designed such that, on the one hand, the threaded bushing head 3b lies positively in the indentation 5 and, on the other hand, is flush with the surface of the structural element 2b, thus creating a flat surface on the side of the structural element 2b in the region of the cavity 2c.

[0031] When the threaded bushing 3 is inserted, the threaded bushing head 3b is bonded to the structural element 2b by means of an adhesive layer 9.

[0032] When inserted into the receiving opening 4, a plastic fastening sleeve 6 is pushed onto the threaded bushing shaft 3a projecting beyond the structural element 2a. The fastening sleeve 6 is formed with a radially circumferential flange 6a on the end face adjacent to the structural element 2a. The flange 6a is connected to the outer surface of the fastening sleeve 6 via four stiffening ribs 6b evenly distributed around the circumference. This fastening sleeve 6 can be manufactured cost-effectively as a plastic injection-molded part.

[0033] Via this flange 6a, the fastening sleeve 6 is firmly bonded to the structural element 2a of the structural component 2 by means of an adhesive layer 8. This fastening sleeve 6 serves not only to further secure the threaded bushing 3 to the structural component 2, but also to support the moment in the event of a force load generated by a screwed-on component. Instead of an adhesive connection, a welded connection can also be realized if the materials involved are thermoplastics.

[0034] In addition, this fastening sleeve 6 can also be provided with a metal sleeve 7 as a sleeve, which is pushed together with the fastening sleeve 6 onto the threaded bushing shaft 3a, so that this metal sleeve 7 rests against the threaded bushing shaft 3a and the fastening sleeve 6 encloses the metal sleeve 7.

[0035] Such a connection arrangement 1 can be used in vehicle body construction, whose structural component 2 is used, for example, as a cross member for connecting additional components, such as a vehicle seat. The connection is made as a screw connection via the threaded bore 3d, which is realized as a blind hole in the threaded bushing shaft 3a.

[0036] The connection arrangement 1 can also be designed such that the fastening sleeve 6 and, if applicable, together with the metal sleeve 7, form a projection 10 above the end face 3c of the threaded bushing shaft 3a. By screwing a component onto this threaded bushing shaft 3a, the threaded bushing 3, the structural component 2, and the fastening sleeve 6 are pressed together, resulting in a high-quality connection. Reference symbol 1 connection arrangement 2 Structural component 2a Structural element of structural component 2 2b Structural element of structural component 2 2c Cavity of structural component 2 3 threaded bushing 3a Threaded bushing shaft of threaded bushing 3 3b Threaded bushing head of threaded bushing 3 3c End face of the threaded bushing shank 3a 3D threaded hole 4 Receiving opening 4a Edge area of ​​the receiving opening 5 Imprint 6 Mounting sleeve 6a Flange 6b Stiffening rib of the fastening sleeve 6 7 sleeve, metal sleeve 8 adhesive layer 9 Adhesive layer 10 Overhang

Claims

[1] Connection arrangement (1) with a multi-part or single-part structural component (2), wherein - the structural component (2) has a receiving opening (4) with an indentation (5) for receiving a threaded bush (3), - the structural component (2) comprises at least two adjacent structural elements (2a, 2b), between which a limited cavity (2c) is formed, - the receiving opening (4) is formed in the region of the cavity (2c) in the structural elements (2a, 2b), - in the region of the receiving opening (4), a structural element (2b) has the indentation (5) such that the edge regions (4a) of the structural elements (2a, 2b) forming the receiving opening (4) abut one another, and - the threaded bushing (3) is formed with a threaded bushing shaft (3a) and with a threaded bushing head (3b) which is positively adapted to the impression (5), characterized by , that - the threaded bushing head (3b) is integrally connected to the structural component (2) having the indentation (5), - a fastening sleeve (6) is provided which is designed to be pushed onto the threaded bushing shaft (3a) of the threaded bushing (3) inserted into the receiving opening (4), - the fastening sleeve (6) is formed with a radially circumferential flange (6a) at the end, which bears against the structural component (2), and - the fastening sleeve (6) is firmly connected to the structural component (2) when pushed onto the threaded bush shaft (3a). [2] Connecting arrangement (1) according to claim 1, characterized by that the fastening sleeve (6) is formed with stiffening ribs (6b) which connect the flange (6a) to the outer surface of the fastening sleeve (6). [3] Connecting arrangement (1) according to claim 1 or 2, characterized bythat a sleeve (7) is provided which is arranged on the threaded bushing shaft (3a) and is enclosed by the fastening sleeve (6), wherein the sleeve (7) is made of metal and the fastening sleeve (6) is made of plastic or the sleeve (7) is made of plastic and the fastening sleeve (6) is made of metal. [4] Connecting arrangement (1) according to claim 3, characterized by that the fastening sleeve (6) and the sleeve (7) form a projection (10) over the end face (3c) of the threaded bush shaft (3a). [5] Connecting arrangement (1) according to one of the preceding claims, characterized by that the material connections are designed as adhesive connections or as welded connections. [6] Connecting arrangement (1) according to one of the preceding claims, characterized by that the structural component (2) is designed as an FKV (fibre-reinforced plastic) sandwich structure or is made of sheet metal parts. [7] Connecting arrangement (1) according to one of the preceding claims, characterized by that the cavity (2c) is filled with a foam material.

Images