CN104228962B - The method of the component and connecting cross beams and assembly beam that be made of crossbeam and assembly beam - Google Patents

Abstract

The invention relates to an assembly consisting of a crossbeam (12) and an assembly beam (14) and a method for connecting the crossbeam (12) and the assembly beam (14). The object of the invention is to provide an assembly consisting of a beam (12) and a mounting beam (14) and a method for connecting the beam (12) to the mounting beam (14), by means of which the assembly is simplified and thus reduced The cost of manufacturing a motor vehicle. In the assembly according to the invention of a motor vehicle consisting of a cross member (12) and a mounting beam (14), there are at least two cross member joining surfaces (22a, 22b) at the cross member (12) and at least two at the mounting member (14). The two mounting beam joint surfaces (30a, 30b) are configured to be screwed to each other. Furthermore, means (32) for producing a clamping connection are arranged at the at least two transverse beam joint surfaces (22a, 22b) and the at least two mounting beam joint surfaces (30a, 30b).

Description

Assembly consisting of beams and assembly beams and method of connecting beams and assembly beams

technical field

The invention relates to an assembly of a crossbeam and a mounting beam of a motor vehicle and a method for connecting the crossbeam and the mounting beam.

Background technique

From DE 10 2008 020 304 A1 a vehicle structure of a motor vehicle with a front module is known, according to which the front part and the mounting beam are connected by arranging a transversely oriented beam part between the mounting beam and the front part connected. The beam part is held for pre-assembly by two clamping elements arranged on the outside and is then screwed on elsewhere. The structure also includes height-orientable adjustment elements in order to be able to position the front part precisely. The described vehicle structure has no relation to the arrangement of the cross members and mounting members and appears not to be suitable for such an arrangement either. The crossbeams to be arranged on the mounting beams have hitherto (also for pre-assembly) generally been screwed on in practice.

Contents of the invention

The object of the present invention is to provide an assembly of a cross member and a mounting member and a method for connecting the member and mounting member, by means of which the assembly is simplified and thus the production costs of the motor vehicle can be reduced.

The solution to the object is achieved according to the invention with a component of a cross member and a mounting beam of a motor vehicle and a method for producing the component of a cross member and a mounting beam.

In the assembly according to the invention of a cross member and a mounting beam of a motor vehicle, at least two cross member joint surfaces on the cross beam and at least two mounting beam joint surfaces on the mounting beam are designed to be screwed to one another. Furthermore, means for producing a clip connection are arranged at the at least two beam joint surfaces and the at least two assembly beam joint surfaces, wherein at the at least two beam joint surfaces and at the at least two assembly At least one positioning aid is in each case formed at the beam joint, wherein the shape of the positioning aid is adapted to the means for producing the clamping connection in such a way that due to the positioning aid, at the cross beam joint and The joint surfaces of the mounting beams combined prevent translational movement before the first contact of the means for making the clamping connection, wherein the mounting beams are connected to the at least two mounting beam joint faces on the side opposite to the at least two mounting beam joint faces The longitudinal member joining surfaces of at least two longitudinal members are in contact, and the cross member, the mounting member and the longitudinal members are screwed to one another by a common screw connection. The term "arrangement" is understood at the present time to mean not only the one-piece construction of such components at the assembly beam joint or beam joint, but also the arrangement or fastening of one or more separate elements. The assembly according to the invention enables a simple and cost-effective arrangement of the transverse beam on the mounting beam and in particular pre-assembly via a clamping connection by means of the means provided. Time- and cost-intensive screwing work during pre-assembly can thus be dispensed with. Working time and possibly personnel can also be saved if the clamping connection can be realized by only one person and therefore no additional personnel are required for the orientation and pre-assembly by screwing.

In a practical embodiment of the assembly according to the invention, at least two means for producing a clamping connection are each arranged on the at least two cross member joint surfaces and on the at least two mounting beam joint surfaces. By arranging two or more means for producing the clamping connection, the relative orientation and retention of the joining surfaces relative to one another can be significantly improved. In this case, even when the distance between the at least two pairs of cross member joints and assembly beam joints is relatively large, preassembly is possible with such precision that without additional recalibration it is then possible to use only one person Final assembly is achieved by means of screw connections. In this case, the joining surfaces can be spaced from one another as far apart as two side members of the motor vehicle, in particular.

Production of the connection for pre-assembly of the component according to the invention can be facilitated if at least one positioning aid is formed on the at least two cross member joint surfaces and on the at least two mounting beam joint surfaces respectively. A positioning aid is to be understood in particular as a combination of a protruding guide element (which is formed on one of the elements (beam joint surface or mounting beam joint surface)) serving as a guide, with a cooperating guide recess for receiving the guide element Port, which is constructed at another element (mounting beam joint face or beam joint face).

It is preferred here if the positioning aid has a greater length than the means for producing the clamping connection, since in this case the assembler can first concentrate on inserting the guide element into the recess and then after introducing the guide element Make clamp connections.

It is further preferred if the positioning aid has a circular cross-section, since this facilitates a relative rotation of the cross member joint face relative to the mounting beam joint face after the guide element has been introduced into the guide recess.

Introduction of the guide element into the guide recess is facilitated if the positioning aid is configured conically. Preferably, the shape of the positioning aid is adapted to the means for producing the clamping connection (clamping element) such that, due to the positioning aid, when the joint surface of the beam joins the joint surface of the mounting beam, the means for producing the clamping connection The translational motion is prevented until the first contact of the .

In another practical embodiment of the assembly according to the invention, the at least two assembly beam joint surfaces and the at least two cross member joint surfaces extend in the transverse direction of the motor vehicle, so that the assembly (in which the joint surfaces are brought to mutual abutment) is realized in the longitudinal direction of the motor vehicle. This has the advantage that preassembly (clamping) and final assembly (screwing) can be carried out in the same direction (in the longitudinal direction of the motor vehicle).

In the last-mentioned case, when the mounting beam is in contact with the stringer joint surface bands of at least two stringers on the side opposite the at least two mounting beam joint surfaces and the crossbeam, mounting beam and longitudinal beam pass through It is further advantageous for the assembly according to the invention when the common screw connections are screwed together. In this case, the fastening of the longitudinal beams at the mounting beams can be achieved simultaneously with the final assembly. Both the connecting elements and the assembly steps for the separate assembly of the longitudinal girders on the assembly girder can thus be dispensed with.

The assembly according to the invention is already pre-assembled when two means for producing a clamping connection and positioning aids are respectively arranged in the form of a triangle at the at least two beam joint surfaces and the at least two mounting beam joint surfaces. It is then particularly rotation-proof and precisely positioned. Expressed in other words, it is preferred when the at least two means for producing the clip connection and the at least one positioning aid are not arranged in a straight line.

The invention also relates to a method for producing an assembly consisting of a crossbeam and a mounting beam, according to which in a first (pre)assembly step at least two crossbeam joint surfaces and corresponding at least two assembly beam joint surfaces are passed through Clamping connection for pre-assembly and then in a second (final) assembly step screwing the at least two beam joints to the at least two assembly beam joints, wherein at the at least two beam joints And at least one positioning aid is formed on the at least two mounting beam joint surfaces, wherein the positioning aid is adapted in shape to the means for producing the clip connection such that due to the positioning aid , preventing translational movement prior to first contact of said means for making a clamping connection when said beam joint surfaces are joined to said assembly beam joint surfaces, wherein said at least two beam joint surfaces are joined to said Before the at least two mounting beam joint surfaces are screwed on, two longitudinal beams each having at least one longitudinal beam joint surface are brought into contact on the side of the mounting beam opposite the at least two mounting beam joint surfaces. And then screw the crossbeam joint surface to the longitudinal beam joint such that the mounting beam is fixed between the crossbeam and the longitudinal beam by the same screw connection.

In another practical embodiment of the method according to the invention, before the at least two cross member joint surfaces are screwed to the at least two mounting beam joint surfaces, the mounting beam is opposite the at least two mounting beam joint surfaces. The two longitudinal beams on the placed side are each brought into contact with at least one longitudinal beam joint surface and the transverse beam joint surface is then screwed to the longitudinal beam joint surface so that the assembly beam is connected between the transverse beam and the longitudinal beam by the same bolts to fix.

Reference is made here again to the advantages already explained above in connection with the assembly according to the invention.

Description of drawings

Further practical embodiments and advantages of the invention will be described below in conjunction with the drawings. in:

Figure 1 shows an assembly according to the invention in a perspective view from obliquely front,

FIG. 2 shows in an enlarged illustration the region marked II in FIG. 1 of the assembly according to the invention with connected longitudinal beams in a view obliquely from the front,

Figure 3 shows a section through the clamping element of the assembly according to the invention according to the line III-III in Figure 2 and

FIG. 4 shows, in an enlarged illustration, the region marked with II in FIG. 1 of the assembly according to the invention with connected longitudinal beams, in a view obliquely from the rear.

Detailed ways

FIG. 1 shows an assembly 10 according to the invention consisting of a cross member 12 and a mounting member 14 in the region of the front of a motor vehicle (not shown). The cross member 12 is an element extending mainly in the vehicle transverse direction 16 (y-direction), which is formed on its outer side in the vehicle longitudinal direction 18 (x-direction) and which at its open end extends in the vehicle longitudinal 18 (x-direction) Portions 20a, 20b have beam engaging surfaces 22a, 22b. The cross member joint surfaces 22 a , 22 b extend in the transverse vehicle direction 16 (y-direction) and in the vehicle vertical direction 24 (z-direction).

The mounting beam 14 is an element configured as a frame with an approximately rectangular basic shape, that is to say with two vertical sections 26a, 26b extending in particular in the vehicle vertical direction 24 (z-direction) and connecting these regions to one another. Connecting two horizontal sections 28 a , 28 b extending in the vehicle transverse direction 16 (y-direction). On the vertical sections 26 a , 26 b of the mounting beam 14 , mounting beam joint surfaces 30 a , 30 b are formed on the side of the mounting beam 14 directed toward the transverse beam 12 .

The connection between the transverse beam 12 and the mounting beam 14 is explained below with reference to FIGS. 2 , 3 and 4 using the example of the area marked II in FIG. 1 in the area of the right vertical section 26 b. FIG. 2 shows an enlarged view (front side) of the area marked II together with the stringer 48 in FIG. 1 , and FIG. 4 shows the rear side of this area. FIG. 3 shows a sectional view according to the line III-III in FIG. 2 . In the region of the left vertical section 26 a the connection between the cross member 12 and the mounting member 14 as well as the mounting member joint surface 30 a and the cross member joint face 22 a are formed mirror-symmetrically with respect to the longitudinal axis of the motor vehicle. The subsequent detailed description of the cross member joint surface 22 b and the mounting beam joint face 30 b also applies in this regard to the cross member joint face 22 a and the mounting beam joint face 30 a.

As means 32 for producing the clip connection, two latching lugs 34 a , 34 b are formed on the mounting beam joint surface 30 b and a through-hole 36 is formed on the transverse beam joint surface 22 b (see FIG. 3 ). The detent noses 34 a , 34 b are molded in one piece on the mounting beam 14 via thin-walled webs 38 a , 38 b. In order to be guided through the through-opening 36 in the direction of the arrow 40 ( FIG. 3 ), the detent noses 34a, 34b can be spring-elastically pressed together. As can be seen in FIG. 3 , the detent noses 34 a , 34 b have obliquely running surfaces 42 a , 42 b which run toward each other in an arrow-like manner. The shape and arrangement of these faces 42a, 42b make it possible that the snap-in noses 34a, 34b (when they are moved in the direction of the arrow 40 towards the beam joint face 22b before making the clamping connection shown in FIG. When) after hitting the edge of the through hole 36, the springs are elastically pressed together in order to be able to pass through the through hole 36. This facilitates the manufacture of the clip connection.

As can be seen in FIGS. 2 and 3 , conical guide elements 52 are formed as positioning aids 50 on the mounting beam joint surfaces 30 a , 30 b , which guide recesses formed in the transverse beam joint surfaces 22 a , 22 b is guided in the mouth (unidentifiable).

As can be seen in particular in FIGS. 2 and 4 , the beam joint surfaces 22 a , 22 b and the mounting beam joint surfaces 30 a , 30 b are additionally held together by bolts 44 a , 44 b , 44 c and corresponding nuts 46 a , 46 b , 46 c . Each combination of a screw 44a, 44b, 44c and a nut 46a, 46b, 46c thus forms a screw connection 44a-46a, 44b-46b, 44c-46c.

It can also be seen in FIGS. 2 and 4 that the longitudinal beam 48 is also fastened to the vertical section 26 b of the mounting beam 14 by means of screw connections 44 a - 46 a , 44 b - 46 b , 44 c - 46 c. In the same way, a longitudinal beam (not shown) is fastened at the opposite vertical section 26 a of the mounting beam 14 .

In order to preassemble the crossbeam 12 at the assembly beam 14, the crossbeam 12 must be positioned such that the guide element 52 can be introduced into a guide recess (not visible in the drawing) by a movement in the vehicle longitudinal direction 18 (x-direction) Furthermore, the obliquely running surfaces 42a, 42b of the detent noses 34a, 34b are pressed against the edge of the through-opening 36 formed in the crossmember joint surface 22a, 22b during movement in the vehicle longitudinal direction 18 (x-direction). A further relative movement of the crossbeam 12 in the vehicle longitudinal direction 18 (x-direction) in the direction of the mounting beam 14 then spring-elastically presses the locking noses 34a, 34b together and guides them through the through-opening 36 until it has penetrated the through-opening 36 and assumes the latched position shown in FIG. 3 . The pre-assembly is complete when all detent noses 34 a , 34 b have assumed the positions shown in FIG. 3 . Final assembly may be followed by pre-assembly by making bolted connections 44a-46a, 44b-46b, 44c-46c.

It is pointed out once again that in the assembly according to the invention (as explained above in connection with the exemplary embodiment) the additional fastening of the longitudinal beam 48 on the mounting beam 14 is not absolutely necessary. In a simpler embodiment, not shown, the screw connections 44 a - 46 a , 44 b - 46 b , 44 c - 46 c can also be used only for fastening the transverse beam 12 to the mounting beam 14 .

In the illustrated embodiment, the clamping elements (comprising locking noses 34a, 34b and through-holes 36 ) aligned in the vehicle longitudinal direction (x-direction) can also be aligned in the vehicle transverse direction (y-direction), vehicle vertical direction (z-direction) up or in any other direction. Furthermore, the clamping element on the assembly according to the invention and the guide element 52 serving as a positioning aid 50 can have other suitable geometries.

The features of the invention disclosed in the description, in the drawings and in the claims can be essential for realizing the invention in its different embodiments not only individually but also in any combination. The invention is not limited to the described embodiments. It may be varied within the scope of the claims and taking into account the knowledge of the relevant specialist.

list of reference signs

10 components

12 beams

14 Assembly Beam

16 Vehicle lateral direction (y direction)

18 Vehicle longitudinal direction (x direction)

20a, 20b Open ends

22a, 22b Beam joint face

24 Vehicle vertical (z direction)

26a, 26b vertical section

28a, 28b horizontal section

30a, 30b Assembled beam joints

32 Devices for manufacturing clamp connections

34a, 34b Snap lock nose

36 through holes

38a, 38b Splices

40 arrows

42a, 42b side

44a-c bolts

46a-c Nut

48 Stringers

50 Positioning aid

52 Guide element.

Claims (9)

1. An assembly consisting of a crossbeam (12) and an assembly beam (14) of a motor vehicle, wherein at least two crossbeam joint surfaces (22a, 22b) at 14) At least two assembly beam joint surfaces (30a, 30b) are configured to be screwed to each other, characterized in that, at least two beam joint surfaces (22a, 22b) and the at least two assembly beam joint surfaces (30a, 30b) are arranged means (32) for producing a clip connection, wherein at said at least two beam joint surfaces (22a, 22b) and at said at least two mounting beam joint surfaces (30a, At 30b) at least one positioning aid (50) is formed in each case, wherein the positioning aid (50) is adapted in shape to the means (32) for producing a clip connection such that due to the positioning aid (50), preventing prior to first contact of said means for making a clip connection (32) when said beam joint surface (22a, 22b) is joined to said mounting beam joint surface (30a, 30b) translational movement, wherein the mounting beam (14) abuts against the longitudinal beam joint surfaces of at least two longitudinal beams (48) on the side opposite to the at least two mounting beam joint surfaces (30a, 30b) and the The cross beam (12), the assembly beam (14) and the longitudinal beam (48) are screwed to each other by common bolt connections (44a-46a; 44b-46b; 44c-46c). 2. The assembly according to claim 1, characterized in that at the at least two beam joint surfaces (22a, 22b) and at the at least two assembly beam joint surfaces (30a, 30b) are respectively arranged At least two means (32) for producing a clip connection. 3. The assembly according to claim 2, characterized in that the crossbeam (12) is configured as a vibration-damping crossbeam made of steel and is joined at the crossbeam as means (32) for producing the clamping connection. A through hole (36) is formed on the surface (22b) and two latching lugs (34a, 34b) are formed on the mounting beam joint surface (30b). 4. The assembly as claimed in claim 3, characterized in that the detent noses (34a, 34b) are formed from plastic. 5. Assembly according to claim 1, characterized in that the positioning aid (50) has a greater length than the means (32) for producing the clip connection. 6. Assembly according to claim 1 or 5, characterized in that the positioning aid (50) has a circular cross-section. 7. The assembly according to claim 1, characterized in that said at least two assembly beam joint surfaces (30a, 30b) and said at least two beam joint surfaces (22a, 22b) are in the transverse direction of said motor vehicle Extend up. 8. The assembly according to claim 1, characterized in that the at least two beam joint surfaces (22a, 22b) and the at least two assembly beam joint surfaces (30a, 30b) are respectively arranged in the form of a triangle There are two devices ( 32 ) and positioning aids ( 50 ) for producing the clip connection. 9. A method for manufacturing an assembly (10) consisting of a beam (12) and an assembly beam (14), characterized in that at least two beam joint surfaces (22a, 22b) and The corresponding at least two assembly beam joint surfaces (30a, 30b) are preassembled by clamping and then the at least two beam joint surfaces (22a, 22b) are joined to the at least two beam joint surfaces in a second assembly step. The mounting beam joint surfaces (30a, 30b) are tightened, wherein at least A positioning aid (50), wherein said positioning aid (50) is adapted in its shape to said means (32) for producing a clamping connection such that thanks to said positioning aid (50) Beam joint surfaces (22a, 22b) in combination with said mounting beam joint surfaces (30a, 30b) prevent translational movement before said means for making a clamping connection (32) make first contact, wherein at said Before the at least two beam joint surfaces (22a, 22b) and the at least two assembly beam joint surfaces (30a, 30b) are tightened, the assembly beam (14) and the at least two assembly beam joint surfaces ( 30a, 30b) two longitudinal beams (48) each having at least one longitudinal beam joint surface are brought into contact on opposite sides and the transverse beam joint surfaces (22a, 22b) are then joined to the longitudinal beams The face is screwed so that the mounting beam (14) is secured by the same bolt connections (44a-46a; 44b-46b; 44c-46c) between the cross beam (12) and the longitudinal beam (48).