motor vehicle

Abstract

Motor vehicle with a body having hollow profiles with cavities formed therein, wherein the cavities can be separated against water and sound by bulkhead parts, wherein the respective bulkhead part has a base carrier with an expandable foam part provided therewith, wherein the foam part foams up under the influence of heat from a certain temperature and fills a circumferential gap formed between an end face of the bulkhead part and an inner surface of the hollow profile opposite it, wherein the bulkhead part has a fastening clip by means of which the bulkhead part is attached to the body profile via a through-opening of the body profile, characterized in that the bulkhead part (11) has two longitudinal sections (14, 53; 13, 54) and a13, 54) of the bulkhead section (11) has a connecting transverse section (15, 55), such that a circumferential frame (52) of the base support (30) is formed, that the bulkhead section (11) forms a receiving opening (12) in principle U-shaped, that at least one fastening element (16, 17, 20) is formed on inner frame sections (53, 58; 55, 60; 54, 62) of the longitudinal sections (53, 54) and the transverse section (55) of the base support (30), such that at least three spaced-apart fastening points (support points) (3, 4, 5) are formed in the passage openings (3, 4, 5) of the body profile (2) when the fastening elements (16, 64; 20, 61; 17, 59) are engaged.

Description

[0001] The invention relates to a motor vehicle according to the preamble of claim 1.

[0002] From DE 10237962 A1, a bulkhead component is already known, consisting of a base carrier with surrounding expanding foam. Furthermore, the base carrier has, for example, two clips that are clipped into a body panel. In the unfoamed state, an annular gap exists between the circumferential end faces of the bulkhead and the opposing inner surfaces of a hollow body profile.

[0003] When exposed to heat, for example during painting of the body panel, the foam component expands. The expanded foam forms a firm bond with the opposing body panels. In this way, a watertight and / or soundproof seal is achieved within the cavity in question.

[0004] The object of the invention is to create a device by which a cavity can be sealed in a watertight and / or soundproof manner, whereby a stable mounting in a simple way is ensured.

[0005] This problem is solved by the features of claim 1.

[0006] A motor vehicle according to the invention has a body with hollow profiles in which cavities are formed. The cavities can be separated from water and noise by bulkheads. Each bulkhead has a base carrier with an expandable foam element attached to it. The foam element expands under the influence of heat above a certain temperature and fills a circumferential gap. The gap is formed between an end face of the bulkhead and an opposing inner surface of the respective hollow profile. The bulkhead has a fastening clip by which the bulkhead is attached to the body profile via a through-opening in the body profile.

[0007] Advantageously, the bulkhead is provided with two longitudinal sections and a transverse section connecting them, resulting in a circumferential frame for the base support. The bulkhead forms a U-shaped receiving opening. Fastening elements are provided on the inner frame sections of the longitudinal sections and on one inner frame section of the transverse section of the base support, resulting in at least three spaced-apart fastening points, and thus support points, when the fastening elements are engaged in the through-openings of the body profile.

[0008] In an advantageous embodiment, the surrounding frame of the base support has an upper section and a lower section. A grid structure of transverse and longitudinal struts is formed in both the upper and lower sections.

[0009] Advantageously, the fastening elements on the inner frame sections of the surrounding frame are formed in one piece.

[0010] In an advantageous embodiment, the base carrier consists of a heat-resistant plastic, such as PA 6.6.

[0011] Advantageously, the temperature T below which the foam part expands is in a range of 150 °C ≤ T ≤ 220 °C.

[0012] In an advantageous embodiment, the circumferential gap has a width of 3 mm ≤ t 29 ≤ 6 mm.

[0013] The fastening elements are preferably clips and / or locking tabs.

[0014] In an advantageous embodiment, the body profile has several through-openings for arranging the corresponding number of fastening elements.

[0015] Advantageously, the through-openings formed in the body profile have a rectangular shape, at least when using locking lugs, with a width b of 4 mm ≤ b ≤ 8 mm and a length I of 7 mm ≤ I ≤ 10 mm.

[0016] One embodiment of the invention is described below by way of example with reference to the drawings. These show: Fig. 1 A schematic representation of a bulkhead component with three clips before attachment to a body component, Fig. 2 a schematic representation according to the Fig. 1, wherein the bulkhead component is attached to the body component via the clips and a second body profile is connected to the first body profile, so that the bulkhead component is located in a closed cavity, Fig. 3 a schematic representation according to the Fig. 2 after exposure to heat, in which a foam part of the partition component is foamed up and seals an annular gap to prevent water and / or sound penetration, Fig. 4 a side view of a motor vehicle, showing nine sealing points in cavities of the bodywork, Fig. 5 a perspective view of an arrangement of two bulkhead components in a sill, wherein the base of a B-body pillar is located between the two bulkhead components, Fig. 6 a sectional view through a bulkhead component arranged on an inner sill profile, wherein in the Fig. 6 the structure of a base support of the partition component is shown and the foam part surrounding the base support has been omitted, Fig. 7 a perspective view that shows the Fig. Figure 6 shows the partition component, in which the Fig. 7 an outer profile is attached to the inner profile, so that the partition component is located in a closed cavity, Fig. 8 a perspective view of the in the Fig. 5, Fig. 6 to Fig. 7 shown partition component, wherein in the Fig. 8 the formation and arrangement of three clips emerges, Fig. 9 a perspective view of a corner area of ​​the in the Fig. 8 shown partition component, from which the design of the base support and a foam part arranged on it emerges. Fig. 10 a view of the structure of the basic support of the in the Fig. 8 shown partition component.

[0017] The Fig. Figure 1 shows a hat-shaped body profile 2 of a motor vehicle 1. The body profile 2 has three through-openings 3, 4 and 5 on profile sections 6, 7 and 8. The middle profile section 7 runs in the Fig. 1 vertically, while the adjoining outer profile sections 6 and 8 extend obliquely upwards in the direction of vertically running flanges 9, 10.

[0018] Spacing from the body profile 2 is in the Fig. Figure 1 shows a bulkhead component 11. Hereinafter, the bulkhead component 11 will be referred to as the bulkhead component.

[0019] The bulkhead section 11 has a receiving opening 12 with two opposing, sloping side walls or longitudinal sections 13, 14 and a vertically extending bottom section or transverse section 15 connecting the two side walls 13, 14, which is located in the Fig. 1 runs vertically.

[0020] In the embodiment shown, the side walls 13, 14 of the bulkhead part 11 have the same (slope or inclination) angle α, β as the corresponding profile sections 6, 8 of the body profile 2.

[0021] In the embodiment described in the Fig. As shown in Figure 1, a locking lug 16, 17 with a hook-shaped end 18, 19 is formed on each of the opposite side walls 13, 14 of the bulkhead part 11. A clip or another locking lug 20 with a hook-shaped locking end 21 is provided on the bottom section 15 of the bulkhead part 11. An arrow 22 indicates the mounting direction of the bulkhead part 11 in the direction of the body profile 2.

[0022] The Fig. Figure 2 shows the bulkhead part 11 in the attached state on the body profile 2. The locking lugs 16, 17 and 20 are engaged in the corresponding through-openings 3, 4 and 5 formed in the body profile 2.

[0023] In one embodiment, the through-openings 3 and 5 are designed as elongated slots with an approximately rectangular cross-section. The lengths I3 and I5 are, for example, ≤ 10 mm. The widths b3 and b5 are, for example, ≤ 5 mm. The through-opening 4 can be angular, for example square or rectangular, or round, for example rotationally symmetrical.

[0024] The bulkhead 11 is surrounded by a substantially U-shaped body profile 23. The body profile 23 has flanges 24, 25 which are attached to the flanges 9, 10 of the body profile 2 at fastening points 26, 27, for example by means of a welded connection. The body profile 2 and the spaced-apart body profile 23 form a closed cavity 28.

[0025] In the cross-sectional view of the Fig. 2. The bulkhead part 11 is arranged in the cavity 28 such that a circumferential gap 29 is formed. The gap 29 has a width t. 29 for example 3 mm ≤ t 29 ≤ 6 mm.

[0026] As from the Fig. As can be seen from Figure 9, the bulkhead part 11 has a base support 30 and an associated foam part 31 which is expandable under the influence of heat.

[0027] In the Fig. 2 the foam part 31 is in the unexpanded state 32. The locking lugs 16, 17, 20 clipped into the through-openings 3, 4, 5 of the body profile 2 ensure a rotationally and tilt-proof fastening of the bulkhead part 11 to the body profile 2.

[0028] In the Fig. The hollow profile 33, consisting of the body profiles 2 and 23, was heated, for example, during the painting process at a temperature T. Due to the heating, the foam part 31 expanded or foamed up to such an extent that the gap 29 is filled by the foam 34 of the foam part 31.

[0029] In this expanded state 35 of the foam part 31, the foamed foam of the bulkhead part 11 seals the cavity 28 of the hollow profile 33 against liquids such as water or the like and / or provides sound damping or sound absorption.

[0030] The Fig. Figure 4 shows a side frame 36 of a motor vehicle 1. In one embodiment, bulkhead parts 11a to 11e are provided at nine relevant locations 37a to 37e.

[0031] The bulkhead sections 11a to 11c are located at the level of a lower end 38 of a B-body pillar 39. Bulkhead section 11d, for example, is located in a lower section of a C-body pillar 40. Bulkhead section 11e is located at an upper end 41 of the C-body pillar 40. Bulkhead sections 11f and 11g are arranged in a roof frame 43 between an upper end 44 of the B-body pillar 39.

[0032] The bulkhead section 11h is attached to a central section 45 of an A-pillar 46. Two further bulkhead sections 11i and 11j are provided in a lower area 47 of the A-pillar 46 below a windshield (not shown) and in the area of ​​a door (not shown). Further bulkhead sections may be provided in the front section, rear section, and floor assembly at relevant locations.

[0033] The Fig. Figure 5 shows an enlarged view of the lower end 38 of the B-pillar 9. The two bulkhead sections 11a and 11b are attached to the sill-side body profile 2. Each upper end 48 and 49 of the respective bulkhead section 11a and 11b is arranged adjacent to an inner sill profile 50, 51 of the side frame 36, forming the gap 29.

[0034] The Fig. Figure 6 shows a sectional view through the bulkhead component or bulkhead part 11b in the Fig. 5, from which the base support 30 of the bulkhead section 11b emerges. The base support 30 of the bulkhead section 11b has a circumferential frame 52. The frame 52 is divided into an upper and a lower approximately rectangular section 53, 54 and into a web 55 connecting the two sections 53, 54.

[0035] To stiffen the upper section 53 and the lower section 54, cross and longitudinal webs 56 and 57 arranged in a grid pattern are formed in sections 53 and 54. The upper section 53 has an inner frame section 58 on which a mushroom-shaped clip 59 is formed.

[0036] A mushroom-shaped clip 61 is also formed on an inner frame section 60 at the web 55. A locking lug 64, provided with a hook 63, is formed integrally on an inner frame section 62 at the lower section 54. The clips 59, 61, and the hook 63 of the locking lug 64 are engaged in the through-openings 5, 4, 3 in the profile sections 8, 7, 6 of the body profile 2.

[0037] From the Fig. 6 also shows the circumferential gap 29 between the sill profile 51, the associated hat-shaped body profile 2 and the opposite frame 52 of the bulkhead part 11b.

[0038] In the perspective representation of the Fig. In one embodiment, four fastening points are provided. In the longitudinal section or side wall 53 of the base support 30 of the bulkhead part 11b, a fastening element in the form of a clip 59 is formed, and in the longitudinal section or side wall 54 of the bulkhead part 11b, a fastening element in the form of a hook 63 with a locking lug 64 is formed.

[0039] The web or transverse section 55 of the base support 30 of the bulkhead 11b connecting the two longitudinal sections or the two side walls 54 of the bulkhead section 11b is located in the Fig. The fastening element shown in Figure 6, in the form of a clip 61, is not shown. Instead, two clips 81a and 81b of another bulkhead part 80 are shown, which are attached to the hat-shaped body profile 2. The bulkhead part 80 seals the cavity 82 of the hat-shaped body profile 2.

[0040] In addition to the presentation of Fig. 6 is in the Fig. 7 An outer sill profile 65 is provided. The outer sill profile 65 is connected via flanges 66, 67 to flanges 68, 69 of the inner sill profile 51, forming a cavity 70. In the cavity 70, the bulkhead part 11b is fixedly arranged on the body profile 2 via the fastening elements 59, 61, 64, forming the gap 29 to the surrounding profiles 2, 51, 65.

[0041] The Fig. 8 and Fig. Figures 10 show the bulkhead section 11. In the Fig. Figure 8 shows one side of the bulkhead part 11, on which the expandable foam part 31 is depicted. Furthermore, the fastening elements 59, 61, 64 of the bulkhead part 11 are shown in the Fig. 8 shown.

[0042] The Fig. Figure 9 shows an edge section 71 of the bulkhead part 11, from which the two-part structure of the bulkhead part 11 emerges, consisting of a base support 30 and an expandable foam part 31. In the Fig. Figure 9 shows the expandable foam part 31 in the unexpanded state 32.

[0043] The Fig. Figure 10 shows a side view of the bulkhead section 11, as essentially already shown in the Fig. 6 is shown. From the Fig. Figure 10 shows that the base support 30 has the upper section 53, the lower section 54 and the web 55 connecting the two sections 53 and 54. Furthermore, the fastening elements 59, 61 and 64 are visible on the frame sections 58, 60 and 62.

Claims

[1] Motor vehicle with a body having hollow profiles with cavities formed therein, wherein the cavities can be separated against water and sound by bulkheads, wherein the respective bulkhead has a base carrier with an expandable foam part provided therewith, wherein the foam part expands under the influence of heat from a certain temperature and fills a circumferential gap formed between an end face of the bulkhead and an inner surface of the hollow profile opposite it, wherein the bulkhead has a fastening clip by means of which the bulkhead is attached to the body profile via a through-opening of the body profile, characterized by, that the bulkhead part (11) has two longitudinal sections (14, 53; 13, 54) and a transverse section (15, 55) connecting the two longitudinal sections (14, 53; 13, 54) of the bulkhead part (11), so that a circumferential frame (52) of the base support (30) is formed, that the bulkhead part (11) forms a receiving opening (12) in principle U-shaped, that at least one fastening element (16, 17, 20) is formed on inner frame sections (53, 58; 55, 60; 54, 62) of the longitudinal sections (53, 54) and the transverse section (55) of the base support (30), so that at least three spaced-apart fastening points (support points) (3, 4, 5) are formed when the fastening elements (16, 64; 20, ) are engaged 61;17,59) in the through-openings (3, 4, 5) of the body profile (2). [2] Motor vehicle according to claim 1, characterized by, that the circumferential frame (52) of the base support (30) has an upper section (53) and a lower section (54) and that a grid structure of transverse webs (56) and longitudinal webs (57) is formed in the upper section (53) and in the lower section (54). [3] Motor vehicle according to claim 1 or 2, characterized by that the fastening elements (16, 64; 20, 61; 17, 59) are formed in one piece on the inner frame sections (58, 60, 62) of the surrounding frame (52). [4] Motor vehicle according to any of the preceding claims, characterized by , that the base carrier (30) is made of a heat-resistant plastic, such as PA 6.

6. [5] Motor vehicle according to any one of the preceding claims, characterized by , that the temperature T below which the foam part (31) expands is in a range of 150 °C ≤ T ≤ 220 °C. [6] Motor vehicle according to any one of the preceding claims, characterized by, that the circumferential gap (29) has a width of 3 mm ≤ t 29 It has ≤ 6 mm. [7] Motor vehicle according to any of the preceding claims, characterized by , that the fastening elements (16, 64; 20, 61; 17, 59) are clips and / or locking lugs. [8] Motor vehicle according to any of the preceding claims, characterized by , that the through-openings (3, 4, 5) formed in the body profile (2) have a rectangular shape, at least when using locking lugs (16, 17; 64), the width b of which is 4 mm ≤ b ≤ 8 mm and the length I of which is 7 mm ≤ I ≤ 10 mm.

Images