CN217146141U - Multi-connecting-rod rear auxiliary frame - Google Patents

Multi-connecting-rod rear auxiliary frame Download PDF

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Publication number
CN217146141U
CN217146141U CN202123198494.3U CN202123198494U CN217146141U CN 217146141 U CN217146141 U CN 217146141U CN 202123198494 U CN202123198494 U CN 202123198494U CN 217146141 U CN217146141 U CN 217146141U
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China
Prior art keywords
cross beam
longitudinal beams
front cross
longitudinal
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CN202123198494.3U
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Chinese (zh)
Inventor
余振龙
李春雨
厉智勇
李欢
牛添龙
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FAW Bestune Car Co Ltd
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FAW Bestune Car Co Ltd
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Abstract

The utility model discloses a sub vehicle frame structure behind many connecting rods, it includes that two longerons, back beam front bezel and back beam back plate of front beam, bilateral symmetry constitute frame rack construction. The two ends of the front cross beam are provided with bushing sleeves; one end of each longitudinal beam is fixedly connected to the front cross beam in a lap joint mode, and the other end of each longitudinal beam is provided with a lining sleeve; a rear beam assembly formed by fixedly connecting a front plate of the rear beam and a rear plate of the rear beam in a lap joint manner is fixedly connected between the two longitudinal beams at one end close to the sleeve of the rear bushing in a lap joint manner; the upper and lower parts of the two longitudinal beams close to the front cross beam are respectively provided with an upper control arm mounting bracket and a toe-in control arm mounting bracket which are symmetrically arranged; and a stabilizer bar bracket which is obliquely arranged is arranged at the bottom of the longitudinal beam. The utility model discloses an adopt the closed tube structure, optimize pipe cross-section, support and adopt X to turn-ups structure etc. make the part reach the requirement of lightweight, low cost, high rigidity performance.

Description

Multi-connecting-rod rear auxiliary frame
Technical Field
The utility model relates to a passenger car chassis suspension system technical field especially relates to a sub vehicle frame behind many connecting rods.
Background
The rear subframe is an important part of a suspension system of a passenger vehicle, and is generally a connection medium between a vehicle body and a hub side part, and is also an assembly base body of a suspension system part, and generally required to have characteristics of high rigidity, high strength, light weight and low cost.
The common structure of present back sub vehicle frame is sub vehicle frame, aluminum alloy casting back sub vehicle frame after many punching press plates tailor-welded. However, the common rear auxiliary frame product has a complex structure, a large number of parts and a large weight; the welding process of the tailor-welded multi-stamped plate is complex, the strength of a heat affected zone of a welding seam is low, the welding seam is a short plate with fatigue strength, the transverse rigidity of a common rear subframe is weak, and the deformation is large under some misuse working conditions; according to the scheme of the aluminum alloy cast auxiliary frame, due to the material density, the light weight effect is good, but due to the elastic modulus characteristic relation of an aluminum alloy material and a steel material, the rigidity of the aluminum alloy cast auxiliary frame is small, and the cost is highest.
Disclosure of Invention
The utility model aims at providing a sub vehicle frame structure behind many connecting rods, preceding closed tubular structure's adoption has avoidd in many punching press plate piece welding schemes spare part in large quantity, and weight is big, and welding process is complicated, and rigidity is on the small side in the problem, the aluminum alloy casting scheme that the heat affected zone intensity of welding seam is low, problem with high costs can realize the balance of weight, cost, intensity, performance.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize:
a multi-connecting-rod rear auxiliary frame comprises a front cross beam 1 and a rear cross beam assembly 2 which are oppositely arranged, wherein the front cross beam 1 and the rear cross beam assembly 2 are fixedly connected through two longitudinal beams 3 which are symmetrically arranged left and right,
the rear cross beam assembly 2 is formed by fixedly overlapping a rear cross beam front plate 21 and a rear cross beam rear plate 22;
two longerons 3 are all being close to the one end longitudinal symmetry of front beam 1 is provided with installing support 4, and the bottom still is provided with stabilizer bar support 5 respectively, stabilizer bar support 5 top is to the slope setting of front beam 1 direction.
Furthermore, two 3 one ends of longeron fixed connection of longeron are in on the front beam 1, 2 both ends fixed connection of back crossbeam assembly are in two between the longeron 3, 1 both ends of front beam and two all be provided with bush sleeve 6 on the free end of longeron.
Furthermore, the upper ends of the joints of the front plate 21 and the rear plate 22 of the rear cross beam and the longitudinal beam 3 are in plane lap joint, the lower ends of the joints are provided with a first X-direction flanging structure 23, and the turning positions of the first X-direction flanging structure 23 are provided with first V-shaped reinforcing ribs 24.
Further, the front cross beam 1 is a closed tubular structure formed by adopting a bent pipe cold punching process, the middle part of the front cross beam is close to the rear part, and the whole front cross beam is arranged in a semi-arc shape.
Further, the cross section of the middle part of the front cross beam 1 is oblong, and the height of the cross section is larger than the width.
Furthermore, the longitudinal beam 3 is of a closed tubular structure formed by adopting an internal high-pressure process and is fixedly connected with the full-circumference welding line of the front cross beam 1.
Furthermore, the longitudinal beam 3 is a beam with a perimeter with an approximately uniform cross section, and a bulge 31 is locally arranged at the joint of the longitudinal beam and the mounting bracket 4.
Further, the mounting bracket 4 adopts a U-shaped structure, the opening end of the mounting bracket is provided with a second X-direction flanging structure 41, and the turning part of the second X-direction flanging structure 41 is provided with a second V-shaped reinforcing rib 42.
Further, the stabilizer bar bracket 5 is provided with a long bolt 51 and a short bolt 52.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a multi-connecting rod rear auxiliary frame front beam is a closed tubular structure formed by adopting a bent pipe cold punching process, and a longitudinal beam is a closed tubular structure formed by adopting an internal high pressure process, so that the weight of parts can be reduced, the number of the parts and a welding procedure can be reduced, the material utilization rate can be improved, and the part cost can be reduced; through the optimization of the pipe section, the connection points and the integral rigidity are improved;
2. the utility model provides an X-direction flanging structure adopted by the control arm bracket and the rear cross beam of the multi-connecting-rod rear auxiliary frame, and simultaneously, the flanging is locally provided with a reinforcing rib, thereby effectively meeting the rigidity requirement and the connection fatigue strength of a mounting point;
3. the utility model provides a pair of setting of arranging and length bolt in the slope of sub vehicle frame's stabilizer bar support behind many connecting rods has increased the convenience of assembly, dismantlement, also does benefit to toe-in control arm support X and promotes to rigidity.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a schematic structural view of a rear subframe according to the present embodiment;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a schematic structural view of a longitudinal beam according to the present embodiment;
FIG. 6 is a schematic structural view of the upper control arm mounting bracket according to this embodiment;
fig. 7 is a schematic structural view of a toe control arm mounting bracket according to this embodiment;
FIG. 8 is a schematic structural view of the front and rear plates of the rear cross member according to the present embodiment;
fig. 9 is a schematic structural view of a stabilizer bar bracket according to the present embodiment;
in the above figures: 1. the front cross beam assembly comprises a front cross beam, 2 rear cross beam assemblies, 21 rear cross beam front plates, 22 rear cross beam rear plates, 23 first X-direction flanging structures, 24 first V-shaped reinforcing ribs, 3 longitudinal beams, 31 protrusions, 4 mounting supports, 41 second X-direction flanging structures, 42 second V-shaped reinforcing ribs, 5 stabilizer bar supports, 51 stabilizer bar bolts, 52 short bolts and 6 lining sleeves.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the present invention with reference to the accompanying drawings makes it clear that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment relates to a multi-connecting-rod rear subframe structure, as shown in fig. 1, fig. 2 and fig. 3, the multi-connecting-rod rear subframe structure comprises a frame structure formed by a front beam 1, two longitudinal beams 3 which are bilaterally symmetrical, a rear beam front plate 21 and a rear beam rear plate 22, wherein two ends of the front beam 1 are provided with bushing sleeves 6; one ends of the two longitudinal beams 3 are fixedly connected to the front cross beam 1 in a lap joint mode, and the other ends of the longitudinal beams are provided with lining sleeves 5; the rear beam assembly 2 formed by fixedly connecting the front plate 21 and the rear plate 22 of the rear beam in an overlapping manner is fixedly connected between the two longitudinal beams 3 in an overlapping manner at one end close to the rear bushing sleeve 6; mounting brackets 4 are symmetrically arranged at the upper and lower parts of the two longitudinal beams 3 close to the front cross beam 1 respectively and are respectively used as an upper control arm mounting bracket and a toe-in control arm mounting bracket; a stabilizer bar bracket 5 which is obliquely arranged is arranged at the bottom of the longitudinal beam 3, and the top end of the stabilizer bar bracket 5 is obliquely arranged towards the front cross beam 1;
the front cross beam 1 is a closed tubular structure formed by adopting a bent pipe cold punching process, the whole structure is arranged in a semi-arc shape, and the middle part of the cross beam is arranged in the direction approaching to the rear part, so that the transverse rigidity of the control arm mounting bracket can be effectively increased; the cross section of the middle part of the front cross beam 1 is oblong, as shown in fig. 4, the height dimension of the cross section is larger than the width dimension, so that the bending resistance of the front cross beam 1 is improved, and the modal frequency of the rear subframe assembly is improved; the bent pipe cold punching manufacturing process is simple, the number of parts and welding procedures are reduced, the material utilization rate is improved, and the part cost can be effectively reduced;
the longitudinal beams 3 are closed tubular structures formed by an internal high-pressure process and are fixedly connected with the full-circumference welding line of the front cross beam 1, so that the weight of parts can be reduced, the number of parts and welding procedures can be reduced, the material utilization rate is improved, and the part cost is reduced; adopting the design of approximate equal section perimeter, locally arranging a bulge 31 at the joint of the upper control arm mounting bracket close to the front cross beam 1 to increase the cross section perimeter of the cross beam, as shown in fig. 5, so as to improve the transverse rigidity and fatigue strength of the upper control arm mounting bracket;
the upper control arm mounting bracket and the toe-in control arm mounting bracket which are symmetrically arranged at left and right sides adopt a U-shaped structure, as shown in fig. 6 and 7, and are fixedly connected with the front cross beam 1 and the longitudinal beam 3, so that the connection strength of the front cross beam 1 and the longitudinal beam 3 is enhanced, and the stress of a connection welding seam of the front cross beam 1 and the longitudinal beam 3 is improved; the opening end of the mounting bracket 4 adopts a second X-direction flanging structure 41, so that the rigidity requirement of a mounting point in the X direction is effectively met; a second V-shaped reinforcing rib 42 is arranged at the folding position of the second X-direction flanging structure 41, so that the requirement on the rigidity of the mounting point in the Y direction is further met;
as shown in fig. 8, the upper part of the rear cross beam assembly 2 formed by the rear cross beam front plate 21 and the rear cross beam rear plate 22 is fixedly connected with the longitudinal beams 3 arranged on the left and right sides in a plane lap joint mode, so that the stress condition at the joint can be reduced; the lower part of the longitudinal beam is fixedly connected with the longitudinal beam 3 by adopting a first X-direction flanging structure 23, so that the rigidity requirement of a mounting point in the X direction is effectively met, and meanwhile, the stress of the end part of a welding seam is reduced; the first V-shaped reinforcing ribs 24 are arranged at the folding positions of the first X-direction flanging structures, so that the problem of resilience in stamping manufacturing is effectively solved;
the stabilizer bar bracket 5 is obliquely arranged at the bottom of the auxiliary frame and connects the toe-in control arm mounting bracket and the longitudinal beam 3, as shown in fig. 9, the rigidity of the toe-in control arm mounting bracket in the X direction is further enhanced, and the stabilizer bar device is more convenient to assemble and disassemble; the stabilizer bar bracket 5 is provided with a short bolt 52 and a long bolt 51, which is more advantageous for the assembly of the stabilizer bar device.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a sub vehicle frame behind multi-link, includes relative front beam (1), the rear beam assembly (2) that sets up, two longerons (3) fixed connection, its characterized in that front beam (1) and rear beam assembly (2) set up through bilateral symmetry:
the rear cross beam assembly (2) is formed by fixedly overlapping a rear cross beam front plate (21) and a rear cross beam rear plate (22);
the two longitudinal beams (3) are symmetrically provided with mounting brackets (4) at the upper part and the lower part close to one end of the front cross beam (1), the bottom parts of the longitudinal beams are respectively provided with a stabilizer bar bracket (5), and the top end of the stabilizer bar bracket (5) is obliquely arranged towards the front cross beam (1).
2. The multi-link rear subframe of claim 1 wherein one end of each of said longitudinal beams (3) is fixedly connected to said front cross member (1), and wherein the other end of said rear cross member assembly (2) is fixedly connected between said longitudinal beams (3), and wherein bushing sleeves (6) are disposed on both ends of said front cross member (1) and on the free ends of said longitudinal beams.
3. The multi-link rear subframe as claimed in claim 2, wherein the upper ends of the joints of the rear cross beam front plate (21) and the rear cross beam rear plate (22) with the longitudinal beams (3) are in plane lap joint, the lower ends of the joints are provided with first X-direction flanging structures (23), and the turning positions of the first X-direction flanging structures (23) are provided with first V-shaped reinforcing ribs (24).
4. The multi-link rear subframe as claimed in claim 1, wherein the front cross member (1) is a closed tubular structure formed by a cold stamping process using a bent pipe, and the middle part of the closed tubular structure is close to the rear part and is arranged in a semi-arc shape as a whole.
5. The multi-link rear subframe as claimed in claim 4, wherein the cross-section of the middle portion of the front cross member (1) is oblong, and the cross-sectional height is greater than the width.
6. The multi-link rear subframe as claimed in claim 1, wherein the longitudinal beam (3) is formed by an internal high-pressure process and is fixedly connected with the front cross beam (1) through a full-circumference welding seam.
7. The multi-link rear subframe as claimed in claim 6, characterized in that the longitudinal beams (3) are constant-section perimeter beams, and the connection with the mounting bracket (4) is provided with a bulge (31) locally.
8. The multi-link rear subframe as claimed in claim 1, wherein the mounting bracket (4) is of a "U" structure, the open end of the mounting bracket is provided with a second X-direction flanging structure (41), and the folded part of the second X-direction flanging structure (41) is provided with a second "V" -shaped reinforcing rib (42).
9. The multi-link rear subframe as claimed in claim 1, characterized in that the stabilizer bar bracket (5) is provided with a long bolt (51) and a short bolt (52).
CN202123198494.3U 2021-12-20 2021-12-20 Multi-connecting-rod rear auxiliary frame Active CN217146141U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123198494.3U CN217146141U (en) 2021-12-20 2021-12-20 Multi-connecting-rod rear auxiliary frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123198494.3U CN217146141U (en) 2021-12-20 2021-12-20 Multi-connecting-rod rear auxiliary frame

Publications (1)

Publication Number Publication Date
CN217146141U true CN217146141U (en) 2022-08-09

Family

ID=82687608

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123198494.3U Active CN217146141U (en) 2021-12-20 2021-12-20 Multi-connecting-rod rear auxiliary frame

Country Status (1)

Country Link
CN (1) CN217146141U (en)

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