CN201193050Y - Front subframe with adjustable installation size - Google Patents

Abstract

The utility model provides a front sub-frame whose installation size can be adjusted, comprising an upper plate and a lower plate fixedly connected, and a left connecting plate and a right connecting plate fixedly connected on the left and right sides of the upper plate and the lower plate, the left The connection plate and the right connection plate respectively have a first set of body connection holes, the upper plate and the lower plate have a second set of body connection holes aligned with each other, and the upper plate includes an upper front plate and an upper rear plate fixedly connected plate; the lower plate includes a lower front plate and a lower rear plate fixedly connected. By adjusting the welding dimensions between the left and right connecting plates, the upper plate and the lower plate, and between the front plate and the rear plate, the installation size of the front sub-frame can be adjusted so that it can adapt to different models and body structures without the need Redesign and develop the front subframe for different models, thus significantly shortening the development cycle and reducing the cost of vehicle development.

Description

Front subframe with adjustable installation size

technical field

The utility model relates to a front sub-frame of an automobile, in particular to a front sub-frame whose installation size can be adjusted.

Background technique

In existing vehicles, the front sub-frame is usually formed by welding the upper plate and the lower plate to form a frame structure with a cavity inside, and the upper plate and the lower plate are usually stamped from thicker steel plates. In addition, there are various mounting brackets on the front subframe, which are used to install components such as powertrain, steering system and suspension system. Because the front subframe adopts an integral structure, the manufacturability of manufacturing and assembly is not high, and the investment in manufacturing equipment and tooling is relatively large.

CN 2841461Y discloses a sub-frame assembly, which includes an upper plate and a lower plate, the two ends of the upper plate are respectively connected with the left connecting plate of the upper plate and the right connecting plate of the upper plate, and the two ends of the lower plate are respectively connected with the left connecting plate of the lower plate The right connecting plate of the plate and the lower plate, and the two ends of the bottom of the vehicle frame are respectively connected with a left control arm mounting bracket and a right control arm mounting bracket. On the left connecting plate of the upper plate and the left connecting plate of the lower plate, as well as the right connecting plate of the upper plate and the right connecting plate of the lower plate, matching vehicle body connecting holes are respectively provided to facilitate the fixing of the vehicle frame on the vehicle body. In this technical solution, since a split structure is adopted, the manufacturability of manufacturing and assembly is improved, and the investment in manufacturing equipment and tooling is reduced.

However, in the development process of the front subframe, different front subframes need to be developed for different vehicle models and bodies. The development process of the front subframe generally includes the design of the front subframe, the design and manufacture of the mold, the manufacture of the front subframe, etc., so the development cycle is long and the development cost is high. Today, when new cars are launched and models are constantly developing, the redevelopment of the frame not only prolongs the cycle of car development, but also greatly increases the cost of car development. Therefore, also need to develop a kind of front auxiliary frame that can adjust installation size, to adapt to different automobile bodies.

Utility model content

The purpose of the utility model is to provide a front sub-frame whose installation size can be adjusted, which can adapt to different car bodies, thereby significantly reducing the development cost of the front sub-frame.

In order to achieve the above purpose, the utility model provides a front sub-frame whose installation size can be adjusted. The front sub-frame includes an upper board and a lower board fixedly connected, and a left The connection plate and the right connection plate, the left connection plate and the right connection plate respectively have a first set of body connection holes, and the upper plate and the lower plate have a second set of body connection holes aligned with each other, characterized in that: The upper board includes a fixedly connected upper front board and an upper rear board; the lower board includes a fixedly connected lower front board and a lower rear board.

In the above technical solution, the left connecting plate and the right connecting plate respectively have a first set of vehicle body connecting holes for fixing to the vehicle body by fasteners such as bolts. The left connecting plate and the right connecting plate can be fixed on the left and right sides of the upper plate and the lower plate by lap welding. Therefore, by properly adjusting the welding size of the lap welding part, the length of the front subframe in the left and right direction can be adjusted conveniently, so that the distance between the first group of body connection holes can be adjusted to adapt to the width of the front subframe for different car bodies aspect requirements.

In addition, the upper plate and the lower plate have a second set of vehicle body connection holes aligned with each other for fixing to the vehicle body by fasteners such as bolts and the like. The upper plate may include an upper front plate and an upper rear plate fixed by lap welding, and the lower plate may include a lower front plate and a lower rear plate fixed by lap welding. Therefore, by properly adjusting the size of the lap welding part, the length of the front sub-frame in the front-rear direction can be adjusted conveniently, so that the distance between the second group of body connection holes and the first group of body connection holes can be adjusted to adapt to different body types. Requirements for the length of the front subframe.

Therefore, by adjusting the size of the lap welding part, the installation size of the front sub-frame can be adjusted so that it can adapt to different vehicle models and body structures without redesigning and developing the front sub-frame for different models. Significantly shorten the cycle of automobile development and reduce the cost of automobile development.

Other aspects of the present invention will be described in detail through the following specific embodiments.

Description of drawings

Fig. 1 is a schematic exploded view of a traditional front sub-frame;

Fig. 2 is a schematic top view of the front sub-frame shown in Fig. 1;

Fig. 3 is an exploded schematic view of the front sub-frame according to an embodiment of the present invention;

Fig. 4 is an exploded schematic view of the lower plate of the front sub-frame according to an embodiment of the present invention;

Fig. 5 is an exploded schematic view of the upper plate of the front sub-frame according to an embodiment of the present invention;

Fig. 6 is an exploded schematic view of the left connecting plate and the right connecting plate of the front sub-frame according to an embodiment of the present invention.

Explanation of reference signs

1 upper board

11 Upper front panel 111 Left upper front panel 112 Right upper front panel

12 Upper rear panel 121 Left upper rear panel 122 Right upper rear panel

2 lower plate

21 Lower front panel 211 Left lower front panel 212 Right lower front panel

22 Lower rear panel 221 Left lower rear panel 222 Right lower rear panel

3 left connecting plate 31 left upper connecting plate 32 left lower connecting plate

4 right connecting plate 41 right upper connecting plate 42 right lower connecting plate

5 The first group of body connection holes

6 The second group of body connection holes

7 support sleeve

Detailed ways

The front sub-frame of the present invention will be described in detail below through specific embodiments.

As shown in Figure 1 and Figure 2, a front sub-frame with adjustable installation size includes an upper plate 1 and a lower plate 2 fixedly connected, and a left connection fixedly connected to the left and right sides of the upper plate 1 and lower plate 2 Board 3 and right connecting board 4.

The left connecting plate 3 and the right connecting plate 4 respectively have a first set of vehicle body connecting holes 5 located at the front side of the front sub-frame for fixing to the vehicle body by fasteners such as bolts. The left connecting plate 3 and the right connecting plate 4 can be fixed on the left and right sides of the upper plate 1 and the lower plate 2 by lap welding. Therefore, by properly adjusting the welding size of the lap welding portion, the length of the front sub-frame in the left-right direction can be adjusted conveniently, thereby adjusting the distance L1 between the first group of connecting holes 5 of the vehicle body to adapt to different vehicle bodies. Rack width requirements.

The upper plate 1 and the lower plate 2 have a second group of vehicle body connection holes 6 aligned with each other, located at the rear side of the front sub-frame, for fixing to the vehicle body by fasteners such as bolts. The distance L2 between the second group of vehicle body connecting holes 6 and the first group of vehicle body connecting holes 5 is L3.

As shown in Figure 3, according to an embodiment of the present utility model, the upper board 1 may include a fixedly connected upper front board 11 and an upper rear board 12; the lower board 2 may include a fixedly connected lower front board 21 And lower rear plate 22.

The upper plate 1 may include an upper front plate 11 and an upper rear plate 12 fixed by lap welding, and the lower plate 2 may include a lower front plate 21 and a lower rear plate 22 fixed by lap welding. Therefore, by properly adjusting the size of the lap welding portion, the length of the front sub-frame in the front-to-rear direction can be adjusted conveniently, so that the distance L2 between the second group of vehicle body connection holes 6 and the first group of vehicle body connection holes 5 can be adjusted. Adapt to the requirements of different car bodies on the length of the front sub-frame.

In the assembly process of this front subframe, at first, according to the requirements of the vehicle body on the installation size of the front subframe in the length direction, an appropriate size of the welded part can be selected, and the upper front plate 11 and the upper rear plate 12 can be welded into an upper Plate 1, weld the lower front plate 21 and the lower rear plate 22 to form the lower plate 2, and then fix the welded upper plate 1 and lower plate 2 together by welding. Then, according to the requirements of the vehicle body on the installation size of the front sub-frame in the width direction, select the appropriate size of the welded part, and weld the left connecting plate 3 and the right connecting plate 4 to the upper plate 1 and the lower plate 2 to determine the left connecting plate. The distance L1 between the plate 3 and the first group of body connection holes 5 on the right connection plate 4 , and the distance L2 between the second group of body connection holes 6 and the first group of body connection holes 5 . For example, in order to increase the distance L1 between the first group of connecting holes 5 of the vehicle body, the size of the welded part between the left connecting plate 3 and the right connecting plate 4 and the upper plate 1 and the lower plate 2 can be reduced; The distance L2 between one group of vehicle body connecting holes 5 and the second group of vehicle body connecting holes 6 can reduce the distance between the upper front plate 11 and the upper rear plate 12 and the welding portion between the lower front plate 21 and the lower rear plate 22. size and vice versa.

Here, the distance L3 between the second group of body connection holes 6 is constant. The front subframe as a whole can be divided into the front side and the rear side. The first group of body connection holes 5 on the left connecting plate 3 and the right connecting plate 4 are used to fix the front side of the front subframe, the upper plate 1 and the lower plate The second group of body connection holes 6 on the 2 are used to fix the rear side of the front subframe. In this embodiment, said second set of body attachment holes 6 is preferably located in said upper rear panel 12 and lower rear panel 22 . For different models, it is usually necessary to change the installation position of the front side of the front sub-frame, that is, it is necessary to change the distance L1 between the first group of body connection holes 5 and the distance between the first group and the second group of body connection holes 5 and 6. The distance L2. The installation position of the rear side of the front sub-frame usually does not change much, so the distance L3 between the second group of body connection holes 6 can remain constant. If it is necessary to change the installation position of the rear side of the front sub-frame, the distance L3 between the second group of body connection holes 6 can be changed by other means. For example, a plurality of second groups of vehicle body connection holes 6 with different distances from each other can be provided in the width direction of the upper plate 1 and the lower plate 2 to meet the requirements of different installation dimensions. Alternatively, additional connecting pieces can be welded to the upper plate 1 and the lower plate 2, and the front sub-frame is fixed to the vehicle body through the connecting pieces, so as to meet the requirements of different installation dimensions.

As shown in FIG. 4 , the lower front plate 21 may include a left lower front plate 211 and a right lower front plate 212 fixedly connected; the lower rear plate 22 may include a left lower rear plate 221 and a right lower rear plate 222 fixedly connected. That is to say, in this embodiment, the lower plate 2 is welded by a total of four plates, the left lower front plate 211, the right lower front plate 212, the left lower rear plate 221 and the right lower rear plate 222, thus improving design and Assembly flexibility.

In the assembly process of this front subframe, the lower left front panel 211, the lower right front panel 212, the lower left rear panel 221 and the lower right rear panel 222 can be welded into the lower panel 2 at first, and then the other components can be welded in the same way as above. The panels form the front subframe.

As shown in FIG. 5 , the upper front panel 11 may also include a fixedly connected upper left front panel 111 and a right upper front panel 112 ; the upper rear panel 12 also includes a fixedly connected upper left rear panel 121 and an upper right rear panel 122 . That is to say, in this embodiment, the lower plate 2 can be welded by a total of four plates, the left lower front plate 211, the right lower front plate 212, the left lower rear plate 221 and the right lower rear plate 222, and the upper plate 1 is also welded. It can be formed by welding a total of four plates, the upper left front plate 111 , the upper right front plate 112 , the upper left rear plate 121 and the upper right rear plate 122 .

In this embodiment, referring to FIG. 1 and FIG. 2 , the second group of vehicle body connection holes 6 are respectively formed in the lower left rear panel 221 , the lower right rear panel 222 , the upper left rear panel 121 and the upper right rear panel 122 . Therefore, by selecting the welding size of the welding portion, the distance L3 between the second group of connecting holes 6 of the vehicle body can also be adjusted conveniently.

In the assembly process of this front sub-frame, firstly, the lower left front plate 211, the lower right front plate 212, the lower left rear plate 221 and the lower right rear plate 222 are welded into the lower plate 2, and the upper left front plate 111, the upper right front plate 112. The upper left rear plate 121 and the upper right rear plate 122 are welded into an upper plate to determine the distance L3 between the second group of connecting holes 6 of the vehicle body. Then weld the left connecting plate 3 and the right connecting plate 4 to the upper plate 1 and the lower plate 2, determine the distance L1 between the first group of body connecting holes 5, and connect the second group of body connecting holes 6 with the first group of body The distance L2 between the holes 5 . Therefore, according to the requirements of different models, the installation dimensions of the front sub-frame can be adjusted.

As shown in FIG. 6 , the left connecting plate 3 may include a fixedly connected upper left connecting plate 31 and a left lower connecting plate 32 ; the right connecting plate 4 may include a fixedly connected upper right connecting plate 41 and a right lower connecting plate 42 .

This implementation manner can be combined with any of the above-mentioned implementation manners. In this embodiment, since the left connecting plate 3 and the right connecting plate 4 are respectively welded by two upper and lower plates, the strength is significantly increased. In the assembly process of the front sub-frame, the upper and lower two plates can be welded into the left connecting plate 3 and the right connecting plate 4 before other assembling.

In addition, in the present utility model, the connecting holes 5 and 6 of the vehicle body can be fixed to the vehicle body using common fasteners such as bolts, or fixed to the vehicle body by means of welding or riveting. But as a preferred embodiment, the front subframe may include a plurality of support sleeves 7 which are fixedly connected (for example welded) in the first group of vehicle body connection holes 5 and the second group of vehicle body connection holes 6 respectively. Then, bolts can be used to pass through these supporting sleeves 7, and then fastened to the vehicle body by nuts or the like. Therefore, it is not only easy to assemble, but also convenient to disassemble, which reduces tooling costs and improves assembly efficiency.

In addition, in the present invention, the connection between each plate is preferably fixed by welding, but the present invention is not limited thereto, and can also be fixed by methods such as riveting.

Claims (7)

1. A front sub-frame whose installation size can be adjusted, the front sub-frame includes a fixedly connected upper plate (1) and a lower plate (2), and a fixedly connected upper plate (1) and lower plate (2) The left connecting plate (3) and the right connecting plate (4) on the left and right sides, the left connecting plate (3) and the right connecting plate (4) respectively have a first group of body connecting holes (5), and the upper plate (1) and the lower plate (2) have a second group of vehicle body connection holes (6) aligned with each other, which is characterized in that: The upper board (1) includes a fixedly connected upper front board (11) and an upper rear board (12); The lower board (2) includes a lower front board (21) and a lower rear board (22) fixedly connected. 2. The front sub-frame according to claim 1, characterized in that: the second group of body connection holes (6) are located on the upper rear panel (12) and the lower rear panel (22). 3. The front sub-frame according to claim 1, characterized in that: the lower front panel (21) comprises a fixedly connected lower left front panel (211) and a lower right front panel (212); the lower rear panel (22) comprising fixedly connected lower left rear board (221) and lower right rear board (222). 4. The front sub-frame according to claim 3, characterized in that: the upper front plate (11) comprises a fixedly connected upper left front plate (111) and an upper right front plate (112); the upper rear plate ( 12) Including fixedly connected upper left rear board (121) and upper right rear board (122). 5. The front sub-frame according to claim 4, characterized in that: the second group of vehicle body connection holes (6) are located on the left upper rear panel (121), right upper rear panel (122), left lower rear panel ( 221) and the lower right rear panel (222). 6. The front auxiliary frame according to claim 1, characterized in that: said left connecting plate (3) comprises a fixedly connected upper left connecting plate (31) and a lower left connecting plate (31); said right connecting plate ( 4) It includes a fixedly connected upper right connecting plate (41) and a lower right connecting plate (41). 7. The front subframe according to claim 1, characterized in that: the front subframe further comprises a plurality of support sleeves (7), and the plurality of support sleeves are respectively fixedly connected to the first group of vehicle bodies Connecting holes (5) and the second group of body connecting holes (6).

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