CN103707943B - There is the seat beam of modular - Google Patents

Abstract

The invention relates to a seat cross member (4) of modular construction for use in a motor vehicle. In such a seat cross member, it is arranged according to the invention that at least one carrier (6) of the seat cross member (4) is designed as an extruded part and that the seat cross member ( 4) At least one further carrier (5) has a passage (14) for at least one air conditioning line (15).

Description

Seat cross member with modular construction

technical field

The invention relates to a seat cross member of modular construction for use in a motor vehicle.

Background technique

Such a seat cross member is known, for example, from DE 10 2007 001 719 A1. The seat cross member has a three-piece design in which two different modules are used. The two parts of a module form the receiving means for the motor vehicle seat. These two parts are connected by means of a part forming another module, which part forms a partition extending transversely in the motor vehicle. The spacer only needs to be cut to length for adaptation to different body structures.

DE 10 2007 001 720 A1 discloses a seat cross member of modular construction for use in motor vehicles. The seat cross member is equipped with outwardly extending flanges, so that the flanges can additionally be welded to a tunnel and/or to a sill of the bodywork. As a result, the absorption and transmission of forces are facilitated and the structural stability of the underbody is enhanced in the event of a side impact. Since the seat cross member is arranged at a vertical distance from the body floor, it is possible to lay air-conditioning lines (eg hoses) along the body floor, for example for ventilation purposes to direct fresh air to the rear compartment.

Contents of the invention

The object of the present invention is to develop a seat cross member with a modular design for use in motor vehicles in such a way that it can be optimally adapted to a specific function and at the same time have a low weight.

To achieve this object, the invention proposes a seat cross member of modular construction for use in motor vehicles, in which at least one carrier part is designed as an extruded part and at least one other carrier part has a One passage of at least one air conditioning line.

The seat cross member is therefore embodied as several parts with different designs. Specifically, the seat cross member is implemented by a hybrid design of different materials. This allows optimization of the seat cross member not only with regard to the low weight due to the material used for the seat cross member but also with regard to the specific configuration of the at least one support part as an extruded part. The at least one further carrier of the seat cross member can then be configured particularly efficiently with regard to the creation of a passage for at least one air-conditioning line. This passage makes it possible in particular to lead through a line for air from an air conditioning unit arranged in the front area of the vehicle. The air-conditioning line or lines pass through the passage and are led in particular into a central dashboard in the front area of the cabin, into the footwell of the rear cabin and the like. As a result, the motor vehicle, in particular a passenger car, does not require an additional air conditioning unit in the rear passenger compartment.

This configuration according to the invention of the seat cross member takes into account the specific configuration of a passenger car, in particular a sports car, in which the seat and thus the seat cross member are arranged relatively low, with the result that the seat cross member There is no longer enough space left between the seat and the seat for the passage of these air conditioning lines. The passage in this further carrier is very suitable for receiving the at least one air conditioning line.

With regard to the structure of the passenger compartment, the design of the seat cross member according to the invention not only ensures survival space in particular in the event of a stud/side impact due to the interaction of the support parts. This seat cross member also contributes to the rigidity of the body. When lightweight materials are used, it is provided that the seat cross member according to the invention can have a relatively light weight.

Preferably, the at least one carrier part of the seat cross member, which is designed as an extruded part, consists of aluminum or an aluminum alloy. It is advantageous if the extrusion profile is designed as a multi-chamber profile. In this way, it is possible to provide a seat cross member, at least one carrier of which consists of a multi-chambered aluminum extrusion which is efficient in terms of lightweight construction.

It is considered particularly advantageous if the carrier with the passage is designed as a cast part. Casting technology makes it possible to design this carrier substantially freely corresponding to these specific requirements, especially with regard to the design of the passages in the carrier. In particular, the cast part consists of magnesium or a magnesium alloy. Thus, a function-integrated cast magnesium seat receptacle with an air-conditioning duct can be realized.

In terms of construction, it is considered to be particularly advantageous if the carrier, which is designed as an extruded part, is connected in an end region to the carrier with the channel and when the carrier faces away from the carrier with the channel is connected to one of these further carriers in the end region of the carrier. In particular, the design of a carrier part as an extruded part makes it possible to cut the extruded part in a simple manner to a length corresponding to the intended body structure. The other carrier part, in particular this other carrier part which is designed as a cast part, then simply has to be connected to this carrier part with the extruded part. The further support part (third support part) which is arranged facing away from the support part with the channel is designed in particular as a sheet metal part. Thus, in the case of the seat cross member according to the invention, there is the possibility of designing all the carriers used corresponding to their own requirements. In a preferred exemplary embodiment, the central carrier is designed as an extrusion and the carriers connected to this carrier are designed on the one hand as a casting and on the other hand as a Plate pieces.

According to a preferred exemplary embodiment, the seat cross member has three interconnected carriers. The first carrier with the passage can be connected to a central tunnel and to a floor of the body. A second carrier formed from the carrier designed as an extrusion and connected to the first carrier can be connected to the base plate. A third carrier connected to the second carrier on its side facing away from the first carrier can be connected to a side wall and to the floor of the body. Specifically, the first carrier and the third carrier serve to install the seat.

According to a preferred development, it is here arranged that the carrier with passage has a flange attachment for supporting on a lateral projection of a central passage.

Description of drawings

Further features of the invention will emerge from the dependent claims, from the drawings and from the description of the preferred exemplary embodiments reproduced in the drawings, without the invention being restricted thereto.

In the attached picture:

1 shows a three-dimensional view of a body subarea of a passenger car in the area of the vehicle floor and in the area of a central tunnel, wherein seat cross members for the driver's seat are shown,

FIG. 2 shows a section through a carrier part of the seat cross member shown in FIG. 1 which is designed as an extruded part, in order to illustrate the section of the extruded part,

FIG. 3 shows a section through the seat cross member of a further carrier with a passage for an air-conditioning line, taken in the region of the passage and parallel to the section plane according to FIG. 2 .

detailed description

FIG. 1 shows a floor 1 in a subarea of the body of a passenger car at the position of the driver's seat of the passenger car, and also shows a central tunnel 2 in a subarea, which is Connect to the backplane 1. Mounted in this floor 1 and in a lateral extension 3 of the central tunnel 2 are two seat beams 4, which are substantially of the same design, and which are arranged essentially parallel to each other and are oriented within the lateral extent of the vehicle. The two seat cross members 4 serve the purpose of mounting the driver's seat. The brackets for the driver's seat are not shown in FIG. 1 .

The corresponding seat cross member 4 has a modular construction. The modular construction has three interconnected carriers 5 , 6 and 7 . Here, the carrier 5 is connected to the central channel 2 in the region of the extension 3 and to the base plate 1 in the region adjoining the central channel 2 . The carrier 6 representing the central carrier is designed as an extrusion and is connected to the carrier 5 and to the base plate 1 . The carrier 7 arranged on the outside is connected to the carrier 6 (on the side of the carrier facing away from the carrier 5 ). This carrier 7 is designed as a sheet metal part, which is connected to the floor 1 and to a side wall (not shown) of the body.

The sectional representation according to FIG. 2 shows the design of the support part 6 as an extruded part. This extrusion is made of aluminum and forms a multi-chamber component which is efficient in terms of lightweight construction. Webs 8 , which form the cavities 9 of the carrier 6 , extend horizontally and vertically in the longitudinal extent of the carrier 6 and relative to the arrangement of the base plate 1 . The carrier 6 is equipped with flange attachments 10 , 11 in the region where the carrier 6 rests on the base plate 1 and is connected, in particular welded, to the base plate 1 in this region.

The carrier 7 to which it is connected in the outer region of the carrier 6 has flange attachments 12 at the top and on both sides, in the region of the flange attachments The carrier 7 is connected to the side wall (not shown).

The carrier 5 , which is connected on the inside to the carrier 6 , is designed as a casting made of magnesium. The carrier 5 has on the outside a curved flange attachment 13 for supporting the projection 3 in the region of its upper surface and lateral surfaces.

As can also be seen from the sectional representation according to FIG. 3 , between the flange attachment 13 and the carrier 6 the carrier 5 is provided with a passage 14 . A passage 14 passes through the carrier 5 in the longitudinal direction of the vehicle. The passage 14 functions as a passage for at least one air-conditioning line 15 shown by a dotted line. Such an air-conditioning line is in particular formed by a plurality of plastic pipes plugged into each other, wherein the air-conditioning line 15 passes through the channel 14 of the corresponding seat cross member 4 and is used to convey air from a The air conditioning unit is fed into the area of the center tunnel 2 and/or the rear passenger cabin. The air-conditioning line 15 runs through the passages 14 of the two seat cross members 4 .

In addition, the carrier 5 has integrally formed flange attachments 16 and 17 , in the region of which the carrier 5 rests on the base plate 1 . In the region of the flange attachments 16 and 17 , and if appropriate also of the flange attachments 13 , the carrier 5 is connected to the base plate 1 or to the protruding part of the central channel 2 .

The seat is mounted in particular in and rests on the carriers 5 and 7 .

Claims (8)

1. A seat cross member (4) of modular construction for use in a motor vehicle, characterized in that the second support part (6) of the seat cross member (4) is configured as an extruded part, and the seat The first support part (5) of the chair cross member (4) has a passage (14) for at least one air-conditioning line (15), wherein the second support part (6) configured as an extruded part is in an end region connected to the first carrier part (5) with the passage (14) and in the end region of the second carrier part designed as an extruded part facing away from the first carrier part (5) with the passage (14) It is connected to a third carrier (7) of the other carriers. 2. The seat cross member as claimed in claim 1, characterized in that the extruded part consists of aluminum or an aluminum alloy. 3. Seat cross member according to claim 1 or 2, characterized in that the extruded part is a multi-chambered part. 4. The seat cross member according to claim 1 or 2, characterized in that the first carrier (5) with the channel (14) is a cast part. 5. The seat cross member as claimed in claim 4, characterized in that the cast part consists of magnesium or a magnesium alloy. 6. Seat cross member according to claim 1, characterized in that the third carrier part (7) arranged facing away from the first carrier part (5) with the channel (14) is a sheet metal part. 7. The seat cross member as claimed in claim 1 or 2, characterized in that the seat cross member (4) has three interconnected carriers, wherein a first carrier (5) with the passage (14) Can be connected to a central tunnel (2) and to the floor (1) of a vehicle body, wherein a second carrier (6) is formed as an extruded part and is connected to the first carrier (5) and can be connected with the bottom plate (1), wherein a third carrier (7) is connected to the second carrier (6) on the end of the second carrier facing away from the first carrier (5) Connected and connectable to a side wall and to the bottom plate (1). 8. Seat cross member according to claim 1 or 2, characterized in that the first carrier (5) with the passage (14) has a flange attachment (13) for It is supported on a lateral projection (3) of a central channel (2).