Component composite

Abstract

The invention relates to a component assembly (10) comprising a first component (12) and a second component (14) which are connected to one another in a joining region (15) by means of a double-sided adhesive tape blank (36; 36a, 36b), wherein the two components (12, 14) have joining surfaces (32, 34) arranged parallel to one another in the joining region (15) between the adhesive tape blank (36; 36a, 36b), which are arranged at an oblique angle (α) to a wall (24, 26) forming an outer contour (20, 22) and / or inner contour of the component assembly (10) in the joining region (15).

Description

Technical area

[0001] The invention relates to a component assembly consisting of two components, in which the two components are connected to one another using a double-sided adhesive tape cut that forms a closed contour. State of the art

[0002] When joining two components using a double-sided adhesive tape cutout, it is necessary to adapt the adhesive tape cutout to the corresponding sealing or adhesive contour between the two components. For this purpose, it is known from DE 10 2009 018 711 A1 to assemble the adhesive tape cutout from several individual adhesive tape sections arranged along the sealing contour. Such adhesive tape contours composed of several separate adhesive tape sections have the disadvantage that, on the one hand, the effort required to cut the individual adhesive tape sections is relatively time-consuming, and, on the other hand, precise assembly or attachment of the individual adhesive tape sections to the components is required to avoid gaps or free spaces between the adhesive tape sections, which could result in leaks in the component assembly.In particular, when the contour to be sealed is intended to form a closed contour, as is the case, for example, between two components forming a housing, it is also known to avoid the aforementioned disadvantages by producing a one-piece, frame-shaped adhesive tape blank by punching or cutting it out of a flat base material in the form of an adhesive tape sheet. This results in a relatively large amount of waste or cutting, since the material arranged within the frame-shaped adhesive tape blank is usually not needed after the adhesive tape blank has been cut out of the adhesive tape sheet. Disclosure of the invention

[0003] The component assembly according to the invention with the features of claim 1 has the advantage that, by optimizing the adhesive tape cut, it enables the minimization of offcuts or waste when separating it from a flat base material or an adhesive tape sheet. Furthermore, independent of the material savings, an improved seal of the component assembly is made possible by an enlarged adhesive surface with the same dimensions of the components, or a possible reduction in the size of the components while maintaining the same high level of seal compared to the prior art.The invention is based on the idea of ​​allowing only a maximum of one joint of the single-piece adhesive tape blank to form a closed adhesive tape contour, while simultaneously being able to create corner areas of the adhesive tape contour to be formed by obliquely formed joining surfaces on the two components in conjunction with adhesive tape sections of the adhesive tape blank arranged at an angle to one another. The component assembly according to the invention is characterized by minimizing unusable waste when forming similar adhesive tape blanks from a flat base material.

[0004] Against the background of the above explanations, a component assembly according to the invention with the features of claim 1 therefore comprises a first component and a second component which are connected to one another in a joining region having a closed contour by means of a double-sided adhesive tape blank. Furthermore, the two components have joining surfaces arranged parallel to one another in the joining region between the adhesive tape blank, which are arranged at an oblique angle to a surface forming an outer contour and / or inner contour of the component assembly in the joining region. It is also essential that the one-piece adhesive tape blank has at least two adhesive tape sections arranged at an angle to one another. A double-sided adhesive tape blank is understood to be an adhesive tape blank which is provided with an adhesive layer on each of its two opposite sides (top and bottom).

[0005] Advantageous further developments of the component assembly according to the invention are listed in the subclaims.

[0006] In a preferred arrangement and design of the adhesive tape blank, the joining area is frame-shaped with a rectangular contour, and the adhesive tape blank comprises four strip-shaped adhesive tape sections, each arranged at the same angle to one another. Such a design of the adhesive tape blank makes it possible, for example, to join two housing parts with rectangular inner and outer contours while forming only one joint between the adhesive tape sections.

[0007] In a particularly preferred embodiment of the last proposal, it is provided that the opposite end faces of the two outer adhesive tape sections of the adhesive tape blank are arranged adjacent to one another in a corner of the component assembly.

[0008] In order to minimize the material requirements, it is also essential that the angle between the two oppositely arranged outer adhesive tape sections is at least 90°.

[0009] To minimize the size of the joining surfaces, it is also advantageous if the oblique angle of the joining surfaces is 45° ± 15°.

[0010] A further preferred embodiment relates to the joining of components of the composite component that have different thermal expansion coefficients. It is particularly preferred that the component with a higher thermal expansion coefficient be conical in cross-section in the region of the joining zone, and the component with the lower thermal expansion coefficient be funnel-shaped in cross-section. Such a design increases the tightness when the composite component heats up due to increased surface pressure between the two components in the region of the joining surfaces.

[0011] In the simplest case, the joining surfaces can each be flat. This has the advantage that only a single adhesive tape cutout is required for the joining surfaces. Alternatively, however, it is also conceivable for the joining surfaces to each consist of several flat joining surface sections arranged at an angle to one another. In this case, it is particularly intended that different adhesive tape sections are used for at least two of the joining surface sections. This is particularly useful or necessary when the angle between the joining surface sections is relatively large, so that deformation is difficult or impossible due to the elasticity of the adhesive tape cutout.

[0012] The component assembly described so far is characterized in particular by the fact that the two components are part of a housing.

[0013] The invention further relates to a method for producing a component assembly, in particular for producing the described component assembly, wherein a first component and a second component of the component assembly are connected to one another in a joining region by means of a double-sided adhesive tape blank, wherein the two components have joining surfaces arranged parallel to one another between the adhesive tape blank in the joining region, which are arranged at an oblique angle α to a wall forming an outer contour and / or inner contour of the component assembly in the joining region, and wherein the one-piece adhesive tape blank has at least two adhesive tape sections arranged at an angle β to one another.

[0014] Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments of the invention and from the drawings. Short description of the drawings Fig. 1 shows a longitudinal section through a component assembly consisting of two components formed by means of a double-sided adhesive tape cut, Fig. 2 a lower component of the component assembly with an adhesive tape cut attached to it in a perspective view, Fig. 3 a top view of the adhesive tape cut according to the Fig. 1 and Fig. 2, Fig. 4 a plan view of an arrangement of several adhesive tape cuts according to Fig. 3 to minimize the required adhesive tape material and Fig. 5 a partial longitudinal section through a Fig. 1 modified component assembly with joining surface sections arranged at an angle to each other. Embodiments of the invention

[0015] Identical elements or elements with the same function are provided with the same reference numbers in the figures.

[0016] In the Fig. 1 shows a component assembly 10 consisting of two components 12, 14 connected to each other in a joining area 15. In the illustrated embodiment, the two components 12, 14 form a closed housing 16 and are each shell-shaped or trough-shaped. Components or similar elements (not shown) can be arranged in the interior 17 of the housing 16, which must be protected, in particular, against the ingress of media or moisture from the external environment.

[0017] The two components 12, 14 each have a rectangular outer contour 20, 22 with side walls 24, 26 and a base region 28 and cover region 30 arranged at right angles to the side walls 24, 26. The wall thickness a of the side walls 24, 26 is identical in each case, and the side walls 24, 26 of the two components 12, 14 are aligned with one another such that the outer contours 20, 22, viewed as a whole, form flat outer surfaces on the component assembly 10.

[0018] On the mutually facing end faces of the side walls 24, 26, these form joining surfaces 32, 34 with a closed contour in the frame-shaped joining area 15, which serve to arrange a double-sided adhesive tape cut 36 located between the two components 12, 14. As can be seen in particular from the Fig. As can be seen in Figure 1, the two joining surfaces 32, 34 arranged parallel to one another are arranged at an angle α of 45° ± 15° relative to the side walls 24, 26. As a result, the joining surfaces 32, 34 each have a width b in the plane of the joining surfaces 32, 34 that is greater than the wall thickness a of the side walls 24, 26.

[0019] The adhesive tape cut 36 arranged between the two joining surfaces 32, 34 is as shown in the Fig. 3 is formed as a one-piece adhesive tape blank 36. It has four adhesive tape sections 37 to 40, which, given a square cross-section of the component assembly 10 in the joining area 15, each have the same length L, and which are each arranged at an angle β to one another, wherein the angle β depends on the size of the angle α. The two outer adhesive tape sections 37 and 40 preferably form a joint in the region of a corner 42 of the cross-section of the components 12, 14, where the adhesive tape sections 37 and 40 are arranged with their end faces butt-jointed or in contact with one another ( Fig. 2).

[0020] In the case of the production of a large number of such component assemblies 10, it is intended to minimize the waste of adhesive tape material, according to the Fig. 4 to arrange the individual adhesive tape cutouts 36 parallel to each other with the smallest possible distance between them in order to punch or separate them from a flat base material in the form of an adhesive tape sheet 50. This results in only minimal free spaces 44 remaining as waste or cuttings between the individual adhesive tape cutouts 36. In addition, the representation of the Fig. 4, that an angle γ formed between the two outer adhesive tape sections 37 and 40 is 90° in the illustrated embodiment, preferably at least 90°.

[0021] In the event that the two components 12, 14 are made of different materials or of materials with different thermal expansion coefficients, it is provided that the component 14, which has a larger thermal expansion coefficient, is conical in cross-section in the joining area between the two components 12, 14. Fig. 1, this means that the drawing plane of the Fig. 1 lower component 14 has a larger coefficient of thermal expansion than the upper component 12 connected to it, which has a funnel-shaped cross-section in the joining area.

[0022] The component assembly 10 described so far can be modified in a variety of ways without deviating from the inventive concept. For example, it is conceivable to use the two joining surfaces 32, 34, which in the embodiment according to Fig. 1 and Fig. 2 are each flat, by several, preferably flat, joining surface sections 46, 47 arranged at an angle Δ to each other, in order to maximize the available width of the joining surfaces, which is limited by the wall thickness a of the side walls 24, 26, for example to improve the tightness, as shown in the Fig.5. In this case, it may also be advantageous to use separate adhesive tape cutouts 36a, 36b for the different joining surface sections 46, 47. Furthermore, the invention is not limited to component assemblies 10 with a rectangular cross-section. Rather, n-shaped contours of the joining zone 15 can, in principle, be connected to one another using the described adhesive tape cutouts 36; 36a, 36b. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2009 018 711 A1

[0002]

Claims

[1] Component assembly (10), comprising a first component (12) and a second component (14) which are connected to one another in a joining region (15) by means of a double-sided adhesive tape blank (36; 36a, 36b), wherein the two components (12, 14) have joining surfaces (32, 34) arranged parallel to one another in the joining region (15) between the adhesive tape blank (36; 36a, 36b), which are arranged at an oblique angle (α) to a wall (24, 26) forming an outer contour (20, 22) and / or inner contour of the component assembly (10) in the joining region (15), and wherein the one-piece adhesive tape blank (36; 36a, 36b) has at least two adhesive tape sections (37 to 40) arranged at an angle (β) to one another. [2] Component assembly (10) according to claim 1, characterized bythat the joining region (15) is frame-shaped with a rectangular contour, and that the adhesive tape blank (36) has four strip-shaped adhesive tape sections (37 to 40) each arranged at the same angle (β) to one another. [3] Component assembly (10) according to claim 2, characterized by that the mutually opposite end faces of the two outer adhesive tape sections (37, 40) of the adhesive tape blank (36; 36a, 36b) are arranged adjacent to one another in a corner (42) of the component assembly (10). [4] Component assembly (10) according to claim 2 or 3, characterized by that an angle (γ) between the two oppositely arranged outer adhesive tape sections (37, 40) is at least 90°. [5] Component assembly (10) according to one of claims 1 to 4, characterized by that the oblique angle (α) of the joining surfaces (32, 34) is 45° + / - 15°. [6] Component assembly (10) according to one of claims 1 to 5, characterized bythat the two components (12, 14) consist of materials with different thermal expansion coefficients, and the component (14) which has a larger thermal expansion coefficient is conical in section in the region of the joining zone (15) and the component (12) with the lower thermal expansion coefficient is funnel-shaped in section. [7] Component assembly (10) according to one of claims 1 to 6, characterized by that the joining surfaces (32, 34) are flat. [8] Component assembly (10) according to one of claims 1 to 6, characterized by that the joining surfaces (32, 34) each consist of a plurality of flat joining surface sections (46, 47) arranged at an angle (Δ) to one another. [9] Component assembly (10) according to claim 8, characterized by that the joining surface sections (46, 47) are covered by different adhesive tape cuts (36a, 36b). [10] Component assembly (10) according to one of claims 1 to 9, characterized bythat the two components (12, 14) are part of a housing (16). [11] Method for producing a component assembly (10), in particular a component assembly (10) according to one of the preceding claims, wherein a first component (12) and a second component (14) are connected to one another in a joining region (15) by means of a double-sided adhesive tape blank (36; 36a, 36b), wherein the two components (12, 14) in the joining region (15) between the adhesive tape blank (36; 36a, 36b) have joining surfaces (32, 34) arranged parallel to one another, which are arranged at an oblique angle (α) to a wall (24, 26) forming an outer contour (20, 22) and / or inner contour of the component assembly (10) in the joining region (15), and wherein the one-piece adhesive tape blank (36; 36a, 36b) has at least two, at an angle (β) to one another arranged adhesive tape sections (37 to 40).

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