CN212149011U - Screwed front auxiliary frame for passenger car - Google Patents

Abstract

The utility model belongs to the technical field of front suspension systems, in particular to a screw-connected front subframe for passenger vehicles; a first cross beam, a second cross beam and a third cross beam are sequentially fixed between a right longitudinal beam and a left longitudinal beam, The two ends of the third beam extend to the rear end to respectively extend the right connecting beam and the left connecting beam, and the connection between the two ends of the third beam and the right connecting beam and the left connecting beam are respectively provided with the front point installation lugs of the control arm; The top of the rear end of the beam and the left longitudinal beam are respectively provided with positioning pins, and the positioning pins are provided with a right rear mounting boss of the control arm with a threaded through hole inside; the subframe is divided into four parts, and the cast aluminum body adopts low pressure casting The technology can reduce the overall casting difficulty, reduce the requirements for production equipment, reduce production costs, and at the same time meet the requirements of many connection points of the subframe and complex structure; the process is simple, the production efficiency is high, the strength is high, and the production difficulty is reduced.

Description

Bolted front subframe for passenger vehicle

technical field

The utility model belongs to the technical field of front suspension systems, in particular to a screwed front subframe for passenger vehicles.

Background technique

Most of the existing subframes with front-end frames are in the form of steel plate splicing, and considering the characteristics of aluminum materials, the development of all-aluminum subframes has higher structural design requirements. The front and rear subframes of existing passenger cars are mostly welded and spliced structures of steel plates, which have disadvantages such as high weight, difficulty in welding quality control, and difficulty in dimensional accuracy of hard points.

SUMMARY OF THE INVENTION

In order to overcome the above problems, the present utility model provides a screw-connected front subframe for passenger vehicles, which can reduce the weight while meeting the requirements of strength and bearing capacity. There are advantages in terms of control.

A screw-connected front subframe for a passenger vehicle includes a cast body 1, a left claw 2, a right claw 3 and an end frame 4. The cast body 1 includes a first beam 11, a second beam 12, and a third beam 13. The right longitudinal beam 14 and the left longitudinal beam 15, wherein the first transverse beam 11, the second transverse beam 12 and the third transverse beam 13 are sequentially fixed between the right longitudinal beam 14 and the left longitudinal beam 15 from the rear to the front, and the first transverse beam 11 A plurality of reinforcing ribs are arranged between the second beam 12 and the second beam 12, and a plurality of reinforcing ribs are also arranged between the second beam 12 and the third beam 13. The intersection of the first beam 11 and the second beam 12 and the right longitudinal beam 14 The right stabilizer bar cover plate connecting threaded through holes 5 are respectively provided, the junctions of the first beam 11 and the second beam 12 and the left longitudinal beam 15 are respectively provided with the left stabilizer bar cover plate connecting threaded through holes 6, and the third beam 13 and The junction of the right longitudinal beam 14 is provided with a steering gear mounting threaded through hole 9 , the junction of the third transverse beam 13 and the left longitudinal beam 15 is provided with a steering gear mounting threaded through hole 9 , and the intersection of the third transverse beam 13 and the right longitudinal beam 14 There is a steering gear mounting threaded through hole 9 at the place, and a steering gear mounting threaded through hole 9 is provided on the reinforcing rib between the middle of the second beam 12 and the middle of the third beam 13;

Right connecting beam 16 and left connecting beam 17 extend from two ends of the third cross beam 13 to the rear end respectively, and the front ends of the right connecting beam 16 and the left connecting beam 17 are respectively provided with a right body front mounting boss 19 and a left body body The front mounting boss 20, the front ends of the right connecting beam 16 and the left connecting beam 17 are respectively provided with a right extending beam bracket mounting plate 21 and a left extending beam bracket mounting plate 22;

The left claw 2 and the right claw 3 are respectively welded on the two ends of the third beam 13 of the casting body 1, and the two ends of the end frame 4 are respectively screwed under the right connecting beam 16 and the left connecting beam 17. The left claw 2 The top surface of the left side is the middle mounting surface 10 of the left body, and the top surface of the right claw 3 is the middle mounting surface 18 of the right body;

The left end of the third beam 13 of the casting body 1 is provided with a rear suspension mounting through hole 23 of the power assembly, and the two ends of the third beam 13 and the right connecting beam 16 and the left connecting beam 17 are respectively provided with a front right front lower control arm. Point installation lugs 24 and front left front lower control arm point installation lugs 25;

A right positioning pin 26 and a left positioning pin 27 are respectively provided above the rear ends of the right longitudinal beam 14 and the left longitudinal beam 15 . The left longitudinal beam 15 at the left end of the left positioning pin 27 is provided with a left vehicle body rear mounting surface 28 and a right positioning pin 26 The right longitudinal beam 14 at the right end is provided with a right rear mounting surface 29 of the vehicle body, the right longitudinal beam 14 in front of the right positioning pin 26 is provided with a right front lower control arm and a right rear mounting boss 7 with a threaded through hole inside, and the left positioning pin 27 The front left longitudinal beam 15 is provided with a left front lower control arm right rear mounting boss 8 with a threaded through hole inside.

The beneficial effects of the present utility model:

The utility model divides the sub-frame into four parts by adopting the structure of the cast aluminum body and the aluminum profiles screwed and welded, and the cast aluminum body adopts the low pressure casting process, which can reduce the overall casting difficulty, reduce the requirements for production equipment, and reduce the production cost At the same time, it meets the requirements of many connection points and complex structure of the subframe; the front frame is made of aluminum profiles, which has the advantages of simple process, high production efficiency and high strength; the front and rear are screwed, which can reduce the difficulty of production.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Among them: 1 casting body, 2 left claw, 3 right claw, 4 end frame, 5 right stabilizer bar cover connecting threaded through holes, 6 left stabilizer bar cover connecting threaded through holes, 7 right front lower control arm right rear installation Boss, 8 Left front lower control arm right rear mounting boss, 9 Steering gear mounting threaded through holes, 10 Left side body middle mounting surface, 11 First beam, 12 Second beam, 13 Third beam, 14 Right longitudinal beam, 15 Left longitudinal beam, 16 Right connecting beam, 17 Left connecting beam, 18 Right body middle mounting surface, 19 Right body front mounting boss, 20 Left body front mounting boss, 21 Right extension beam bracket mounting plate, 22 Left extension beam bracket mounting plate, 23 Powertrain rear suspension mounting through holes, 24 Right front lower control arm front point mounting lugs, 25 Left front lower control arm front point mounting lugs, 26 Right positioning pin, 27 Left positioning pin, 28 left body rear mounting surface, 29 right body rear mounting surface.

Detailed ways

As shown in FIG. 1 , a screwed front subframe for a passenger vehicle includes a cast body 1, a left claw 2, a right claw 3 and an end frame 4. The cast body 1 includes a first beam 11, a second The beam 12, the third beam 13, the right longitudinal beam 14 and the left longitudinal beam 15, wherein the first transverse beam 11, the second transverse beam 12 and the third transverse beam 13 are sequentially fixed between the right longitudinal beam 14 and the left longitudinal beam 15 from rear to front. Between the first beam 11 and the second beam 12, there are a plurality of reinforcing ribs, and between the second beam 12 and the third beam 13, there are also a plurality of reinforcing ribs. The first beam 11 and the second beam 12 are connected to the right The junctions of the longitudinal beams 14 are respectively provided with right stabilizer bar cover connecting threaded through holes 5 , and the junctions of the first cross beam 11 and the second cross beam 12 with the left longitudinal beam 15 are respectively provided with left stabilizer bar cover connecting threaded through holes 6 . , the intersection of the third beam 13 and the right longitudinal beam 14 is provided with a steering gear mounting threaded through hole 9, the intersection of the third beam 13 and the left longitudinal beam 15 is provided with a steering gear mounting threaded through hole 9, and the third beam 13 and The junction of the right longitudinal beam 14 is provided with a steering gear mounting threaded through hole 9, and the reinforcing rib between the middle of the second beam 12 and the middle of the third beam 13 is provided with a steering gear mounting threaded through hole 9;

Right connecting beam 16 and left connecting beam 17 extend from two ends of the third cross beam 13 to the rear end respectively, and the front ends of the right connecting beam 16 and the left connecting beam 17 are respectively provided with a right body front mounting boss 19 and a left body body The front mounting boss 20, the front ends of the right connecting beam 16 and the left connecting beam 17 are respectively provided with a right extending beam bracket mounting plate 21 and a left extending beam bracket mounting plate 22;

The left claw 2 and the right claw 3 are respectively welded on the two ends of the third beam 13 of the casting body 1, and the two ends of the end frame 4 are respectively screwed under the right connecting beam 16 and the left connecting beam 17. The left claw 2 The top surface of the left side is the middle mounting surface 10 of the left body, and the top surface of the right claw 3 is the middle mounting surface 18 of the right body;

The left end of the third beam 13 of the casting body 1 is provided with a rear suspension mounting through hole 23 of the power assembly, and the two ends of the third beam 13 and the right connecting beam 16 and the left connecting beam 17 are respectively provided with a front right front lower control arm. Point installation lugs 24 and front left front lower control arm point installation lugs 25;

A right positioning pin 26 and a left positioning pin 27 are respectively provided above the rear ends of the right longitudinal beam 14 and the left longitudinal beam 15 . The left longitudinal beam 15 at the left end of the left positioning pin 27 is provided with a left vehicle body rear mounting surface 28 and a right positioning pin 26 The right longitudinal beam 14 at the right end is provided with a right rear mounting surface 29 of the vehicle body, the right longitudinal beam 14 in front of the right positioning pin 26 is provided with a right front lower control arm and a right rear mounting boss 7 with a threaded through hole inside, and the left positioning pin 27 The front left longitudinal beam 15 is provided with a left front lower control arm right rear mounting boss 8 with a threaded through hole inside.

The left claw 2 and the right claw 3 are respectively welded with the casting body 1, and the casting body 1 and the end frame 4 are screwed together.

Right positioning pin 26: When the subframe is assembled with the body, it is used for positioning; Left positioning pin 27: When the subframe is assembled with the body, it is used for positioning;

Right body rear mounting surface 29: used to connect the body;

Left body rear mounting surface 28: used to connect the body;

Right stabilizer bar cover connecting thread through hole 5: used to connect the connecting bolts of the right cover plate of the lateral stabilizer bar;

Left stabilizer bar cover connecting thread through hole 6: used to connect the connecting bolts of the left cover plate of the lateral stabilizer bar;

Right front lower control arm right rear mounting boss 7: provided with through-hole threads for connecting the rear point of the right front lower control arm;

Left front lower control arm right rear mounting boss 8: There are through-hole threads for connecting the rear point of the left front lower control arm;

Steering gear mounting threaded through hole 1009: used to connect the steering gear;

The middle mounting surface 18 of the right body: used to connect the body;

Left side body middle mounting surface 10: used to connect the body;

Powertrain rear suspension installation through hole 23: used for pressing the suspension bushing;

Mounting lugs 24 at the front point of the right front lower control arm: provided with through holes for connecting with the right front lower control arm by bolts;

Front left front lower control arm mounting lugs 25: provided with through holes for connecting with the left front lower control arm by bolts;

Front mounting boss 19 of the right body: used to connect the body;

Front installation 106 of the left body: used to connect the body;

Right extension beam bracket mounting plate 21: used to connect the right extension beam bracket;

Left extension beam bracket mounting plate 22: used to connect the left extension beam bracket.

Both the left claw 2 and the right claw 3 are made of aluminum profiles: the aluminum profile process can achieve a higher material elongation rate than the casting process, and during the collision process, it can absorb more energy and improve safety. ;

By adopting four-part tailor welding and screw forming, it avoids casting difficulties due to oversized parts and reduces the technological difficulty. The cast body 1 made of cast aluminum body adopts a low-pressure solid casting structure, so that the weight of the parts is light, and at the same time, it meets the requirements of many connection points and complex shapes of the subframe. The overall machining process of the subframe casting body 1 has the advantages of high connection accuracy. Even if the subframe breaks during a collision, the amount of cabin intrusion can be reduced, thereby improving occupant safety.

Claims (1)

1. The utility model provides a passenger car is with sub vehicle frame before spiro union, its characterized in that is including casting body (1), left side goat's horn (2), right side goat's horn (3) and end frame (4), its casting body (1) is including first crossbeam (11), second crossbeam (12), third crossbeam (13), right longeron (14) and left longeron (15), wherein first crossbeam (11), second crossbeam (12) and third crossbeam (13) are fixed in proper order from the back to the front between right longeron (14) and left longeron (15), be equipped with a plurality of strengthening ribs between first crossbeam (11) and second crossbeam (12), also be equipped with a plurality of stabilizer bars between second crossbeam (12) and third crossbeam (13), first crossbeam (11) and second crossbeam (12) are equipped with right apron connection screw thread through-hole (5) respectively with the handing-over department of right longeron (14), the handing-over department of first crossbeam (11) and second crossbeam (12) and left longeron (15) is equipped with left apron connection screw thread through-hole (5) respectively A hole (6), a steering gear mounting threaded through hole (9) is arranged at the joint of the third cross beam (13) and the right longitudinal beam (14), a steering gear mounting threaded through hole (9) is arranged at the joint of the third cross beam (13) and the left longitudinal beam (15), and a steering gear mounting threaded through hole (9) is arranged on a reinforcing rib between the middle part of the second cross beam (12) and the middle part of the third cross beam (13);

a right connecting beam (16) and a left connecting beam (17) extend from the two ends of the third cross beam (13) to the rear ends respectively, a right vehicle body front mounting boss (19) and a left vehicle body front mounting boss (20) are arranged above the front ends of the right connecting beam (16) and the left connecting beam (17) respectively, and a right extending beam support mounting plate (21) and a left extending beam support mounting plate (22) are arranged at the front end parts of the right connecting beam (16) and the left connecting beam (17) respectively;

the left goat's horn (2) and the right goat's horn (3) are respectively welded above two ends of a third cross beam (13) of the casting body (1), two ends of an end frame (4) are respectively connected below a right connecting beam (16) and a left connecting beam (17) in a threaded manner, the top surface of the left goat's horn (2) is a left vehicle body middle mounting surface (10), and the top surface of the right goat's horn (3) is a right vehicle body middle mounting surface (18);

a power assembly rear suspension mounting through hole (23) is formed in the left end of a third cross beam (13) of the casting body (1), and a right front lower control arm front point mounting lug piece (24) and a left front lower control arm front point mounting lug piece (25) are respectively arranged at the connection positions of the two ends of the third cross beam (13) and a right connecting beam (16) and a left connecting beam (17);

the rear upper sides of the rear ends of the right longitudinal beam (14) and the left longitudinal beam (15) are respectively provided with a right positioning pin (26) and a left positioning pin (27), the left longitudinal beam (15) at the left end of the left positioning pin (27) is provided with a left automobile body rear mounting surface (28), the right longitudinal beam (14) at the right end of the right positioning pin (26) is provided with a right automobile body rear mounting surface (29), the right longitudinal beam (14) in front of the right positioning pin (26) is provided with a right front lower control arm rear mounting boss (7) with a threaded through hole inside, and the left longitudinal beam (15) in front of the left positioning pin (27) is provided with a left front lower control arm rear mounting boss (8).

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