CN110978923A - Lower control arm and vehicle - Google Patents
Lower control arm and vehicle Download PDFInfo
- Publication number
- CN110978923A CN110978923A CN201911273452.6A CN201911273452A CN110978923A CN 110978923 A CN110978923 A CN 110978923A CN 201911273452 A CN201911273452 A CN 201911273452A CN 110978923 A CN110978923 A CN 110978923A
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- Prior art keywords
- control arm
- mounting
- lower control
- main body
- mounting hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The embodiment of the invention provides a lower control arm and a vehicle, and relates to the field of vehicle accessories, wherein the lower control arm comprises a body structure, and the body structure comprises a main body part, a first extending part, a second extending part, a first mounting part and a second mounting part which are integrally formed; two ends of the first extension part along the length direction are respectively connected with the first mounting part and the first end of the main body part, and two ends of the second extension part along the length direction are respectively connected with the second mounting part and the second end of the main body part; the first mounting part and the second mounting part are respectively provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole are oppositely arranged; and a third mounting hole is formed in the third end of the main body part. According to the embodiment of the invention, the weight of the lower control arm can be reduced, so that the weight and the energy consumption of a vehicle can be effectively reduced, and the fuel economy is improved.
Description
Technical Field
The invention relates to the field of vehicle accessories, in particular to a lower control arm and a vehicle.
Background
The control arm is used as a guide and force transmission element of a vehicle suspension system and is divided into a front control arm and a lower control arm, and the control arm is mainly used for transmitting various forces acting on wheels to a vehicle body and ensuring that the wheels move according to a certain track.
The structure of the existing lower control arm is generally shown in fig. 1 and 2, and mainly includes a control arm main body, a body upper plate 1, a first body support 2, a second body support 3, a ball pin assembly 4, a third body support 5, a circular tube 6, a bushing 7, a body lower plate 8, a body reinforcing plate 9, and a pin shaft 10. Wherein, parts such as the piece is all fixed on the control arm main part through welded mode under the foretell body piece, body support, pipe, because part quantity and welding process are more, lower control arm weight is great, and then leads to the vehicle gross weight great, and the energy consumption is higher.
Disclosure of Invention
The embodiment of the invention provides a lower control arm and a vehicle, and aims to solve the problems that the weight of the lower control arm is large, the total weight of the vehicle is large, and the energy consumption is high in the prior art.
In order to solve the technical problem, the invention is realized as follows:
the embodiment of the invention provides a lower control arm, which comprises a body structure, wherein the body structure comprises a main body part, a first extending part, a second extending part, a first mounting part and a second mounting part which are integrally formed;
two ends of the first extension part along the length direction are respectively connected with the first mounting part and the first end of the main body part, and two ends of the second extension part along the length direction are respectively connected with the second mounting part and the second end of the main body part;
the first mounting part and the second mounting part are respectively provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole are oppositely arranged; and a third mounting hole is formed in the third end of the main body part.
Optionally, the body structure is integrally formed by liquid forging.
Optionally, the body structure has a first end face and a second end face oppositely arranged along the thickness extending direction;
the first end face and the second end face are respectively provided with a first weight reduction groove and a second weight reduction groove.
Optionally, the first weight-reducing grooves include a first groove and a second groove;
the first groove extends from the first extension part to the main body part and is Y-shaped and branched, and the second groove is located on the second extension part.
Optionally, the second weight-reducing groove comprises at least two mutually isolated recesses;
the at least two mutually isolated recesses are located at least one of the main body portion, the first extension portion and the second extension portion.
Optionally, the body structure has an i-shaped cross section, and the i-shaped cross section has the first weight-reducing groove and the second weight-reducing groove which are oppositely arranged;
the I-shaped section is located in at least one of the main body portion, the first extension portion and the second extension portion.
Optionally, a first through hole is formed in the main body portion, and the first through hole penetrates through the main body portion along a thickness extending direction.
Optionally, a second through hole is formed in an inner wall surface of the first through hole, a third mounting portion is fixedly connected or integrally formed in the second through hole, and a fourth mounting hole is formed in the third mounting portion.
Optionally, bushings are disposed in the first mounting hole, the second mounting hole and the fourth mounting hole, and a ball pin assembly is disposed in the third mounting hole.
The embodiment of the invention also provides a vehicle which comprises the lower control arm.
In the embodiment of the invention, the main body part, the first extension part, the second extension part, the first mounting part and the second mounting part are integrally formed, so that the defects of more working procedures and heavier weight caused by the fact that a plurality of parts need to be welded and assembled when the lower control arm is processed in the prior art are overcome; the weight of the lower control arm is reduced, the weight and the energy consumption of the vehicle can be effectively reduced, and the fuel economy is improved.
Drawings
FIG. 1 is a schematic perspective view of a lower control arm according to the prior art;
FIG. 2 is a top view of a prior art lower control arm;
fig. 3 is a schematic perspective view of a lower control arm according to an embodiment of the present invention;
FIG. 4 is a schematic view of a top-down perspective view of a lower control arm according to an embodiment of the present invention;
FIG. 5 is a schematic view of a bottom-view downward perspective of a lower control arm according to an embodiment of the present invention;
fig. 6 is a schematic perspective view of an i-shaped cross-sectional segment according to an embodiment of the present invention.
The figures show that: the ball pin assembly comprises a body structure 100, a first end face 101, a second end face 102, a main body portion 110, a first extension portion 120, a second extension portion 130, a first mounting portion 140, a second mounting portion 150, a third mounting portion 160, a first through hole 171, a first groove 181, a second groove 182, a third groove 191, a fourth groove 192, a fifth groove 193, a sixth groove 194, a seventh groove 195, a bushing 210 and a ball pin assembly 220.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
As shown in fig. 3 to 5, the lower control arm according to the embodiment of the present invention includes a body structure 100, wherein the body structure 100 includes a main body portion 110, a first extending portion 120, a second extending portion 130, a first mounting portion 140, and a second mounting portion 150, which are integrally formed;
two ends of the first extension portion 120 along the length direction are respectively connected to the first mounting portion 140 and a first end of the main body portion 110, and two ends of the second extension portion 130 along the length direction are respectively connected to the second mounting portion 150 and a second end of the main body portion 110;
the first mounting portion 140 and the second mounting portion 150 are respectively provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole are arranged oppositely; a third mounting hole is formed at a third end of the main body 110.
Taking the structure shown in fig. 3 as an example, the main body 110 is a portion having a right side with a substantially triangular shape, the third mounting hole is provided at the rightmost side of the main body 110, and the first extension portion 120 and the second extension portion 130 are respectively located at two ends of the portion having a left side with a substantially C-shape. The first mounting portion 140 and the second mounting portion 150 are two cylindrical structures, and have axial through holes (i.e., a first mounting hole and a second mounting hole) therebetween. Of course, in practical applications, the shapes of the main body 110, the first extension 120, and the second extension 130 can be adjusted according to practical needs.
In the embodiment, the main body part, the first extension part, the second extension part, the first mounting part and the second mounting part are integrally formed, so that the defects that in the prior art, when a lower control arm is machined, a plurality of parts need to be welded and assembled, the number of working procedures is large, and the weight is large are overcome; the weight of the lower control arm is reduced, so that the weight and the energy consumption of the vehicle can be effectively reduced, and the fuel economy is improved; meanwhile, compared with an assembly mode of welding multiple parts in the prior art, the integrally-formed processing mode reduces the development cost of a die, a clamp and a checking fixture, reduces the manufacturing procedures, saves the labor cost and further reduces the processing and manufacturing cost of the lower control arm.
Alternatively, the body structure 100 is integrally formed by liquid forging. The structure of the body structure integrally formed by liquid die forging is compact, so that the generation of pores, shrinkage porosity and cracks is favorably prevented, and the body structure has higher dimensional accuracy and lower surface roughness; in addition, the liquid forging integrated forming mode is convenient for mechanized automatic production, the production efficiency is high, and the cost of a process die and a single piece is relatively low.
In some possible embodiments, the body structure 100 may be made of light weight materials such as aluminum alloy, magnesium aluminum alloy, etc. to reduce the weight of the body structure and improve fuel economy.
Optionally, the body structure 100 has a first end face 101 and a second end face 102 oppositely arranged along the thickness extending direction; the first end surface 101 and the second end surface 102 are respectively provided with a first weight-reducing groove and a second weight-reducing groove.
In the embodiment, the weight of the body structure can be further reduced and the fuel economy can be improved by arranging the first weight-reducing groove and the second weight-reducing groove.
Optionally, as shown in fig. 4, the first weight-reduction grooves include a first groove 181 and a second groove 182; the first groove 181 extends from the first extension portion 120 to the main body portion 110 and is Y-shaped, and the second groove 182 is located on the second extension portion 130.
Further optionally, the second groove 182 is crescent-shaped; of course, the first recess 181 and the second recess 182 may have other shapes. Through the arrangement of the first lightening groove, the weight of the body structure can be reduced, and meanwhile, the stress concentration on the first end face can be reduced.
Optionally, as shown in fig. 5, the second weight-reducing groove includes at least two recesses isolated from each other; the at least two mutually isolated recesses are located at least one of the main body 110, the first extension 120, and the second extension 130.
In a possible embodiment, the second weight-reducing grooves include a third groove 191, a fourth groove 192, a fifth groove 193, a sixth groove 194, and a seventh groove 195, wherein the third groove 191, the fourth groove 192, and the fifth groove 193 are all approximately triangular recesses and are mainly located on the main body 110; the sixth groove 194 is a half-moon shaped recess and is located on the second extension 130; the seventh groove 195 is an approximately pentagonal recess and is located on the first extension 120. Of course, in practical applications, the concave portion corresponding to the second weight-reduction groove may have other shapes, and the distribution position thereof may also be adjusted according to actual needs.
In the embodiment, by the arrangement of the second weight-reducing groove, the weight of the body structure can be reduced, and meanwhile, the stress concentration on the second end face can be reduced; meanwhile, due to the fact that the concave parts can be isolated from each other, the rib-shaped bulges can exist between every two adjacent concave parts, and the rib-shaped bulges can also play a role in reinforcing the body structure.
Optionally, as shown in fig. 6, the body structure 100 has an i-shaped cross-sectional section, and the i-shaped cross-sectional section has the first weight-reducing groove and the second weight-reducing groove which are oppositely arranged; the i-shaped cross-sectional section is located at least one of the main body 110, the first extension 120 and the second extension 130.
Taking the structure shown in fig. 6 as an example, at a position of the first extending portion 120 close to the main body portion 110, the upper end surface (which may correspond to the first end surface 101) has a first groove 181, the lower end surface (which may correspond to the second end surface 102) has a seventh groove 195, and the first groove 181 and the seventh groove 195 are overlapped with each other in a projection along the up-down direction, and this part of the positions forms the above-mentioned i-shaped cross section. Of course, in practical applications, such an i-section may be present at other positions of the body structure 100. The presence of the i-section enables, on the one hand, a reduction in the weight of the body structure and, on the other hand, also a sufficient bending resistance of the body structure.
Due to the existence of the weight-reducing grooves, the body structure 100 has different thicknesses, and in a preferred embodiment, the parts with different thicknesses are set to be in smooth transition, so that abrupt changes of the cross section are avoided, and stress concentration is reduced.
Optionally, the main body 110 is provided with a first through hole 171, and the first through hole 171 penetrates through the main body 110 in a thickness extending direction.
As shown in fig. 3 and 4, the cross section of the first through hole 171 has a substantially trapezoidal shape, but the shape of the first through hole 171 is not limited thereto, and may have another shape such as a triangular shape. The weight of the body structure is further reduced due to the arrangement of the first through hole.
As shown in fig. 5, in one possible embodiment, the third groove 191 penetrates through the inner wall surface of the first through hole 171, and a stepped surface structure is formed on the second end surface 102 of the main body 110.
Optionally, a second through hole is formed in an inner wall surface of the first through hole 171, a third mounting portion 160 is fixedly connected to or integrally formed in the second through hole, and a fourth mounting hole is formed in the third mounting portion 160.
As shown in fig. 3, the third mounting portion 160 may be cylindrical, similar to the first and second mounting portions 140, 150 described above. The third mounting portion 160 is provided with a fourth mounting hole, so that the fourth mounting hole can be used for being connected with a vehicle vibration damping device, the structure that a bracket is welded on a body structure in the prior art is replaced, the assembly difficulty is reduced, and meanwhile, the strength of the lower control arm is enhanced.
Optionally, as shown in fig. 3, a bushing 210 is disposed in each of the first mounting hole, the second mounting hole, and the fourth mounting hole, and a ball pin assembly 220 is disposed in the third mounting hole.
The bushing 210 and the ball pin assembly 220 can be directly assembled in the corresponding mounting hole, so that the assembly difficulty is low, and the assembly efficiency of the lower control arm is improved.
The body structure of the lower control arm provided by the embodiment of the invention adopts an integrally formed manufacturing mode, so that the development cost of a die, a clamp and a checking fixture is reduced, the manufacturing process is reduced, the labor cost is saved, and the economic performance is improved. The lower control arm body is structurally provided with a hollow main body part and weight reduction grooves on the upper end surface and the lower end surface, so that the weight of the lower control arm is reduced, the strength of the lower control arm is ensured, the service life of the lower control arm is prolonged, and the fuel economy of the whole vehicle is improved.
The embodiment of the invention also provides a vehicle which comprises the lower control arm.
Compared with the prior art, the vehicle provided by the embodiment has the advantages that the weight of the lower control arm can be reduced, so that the total weight of the vehicle can be correspondingly reduced, the energy consumption of the vehicle can be reduced, and the fuel economy is improved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A lower control arm is characterized by comprising a body structure, wherein the body structure comprises a main body part, a first extension part, a second extension part, a first mounting part and a second mounting part which are integrally formed;
two ends of the first extension part along the length direction are respectively connected with the first mounting part and the first end of the main body part, and two ends of the second extension part along the length direction are respectively connected with the second mounting part and the second end of the main body part;
the first mounting part and the second mounting part are respectively provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole are oppositely arranged; and a third mounting hole is formed in the third end of the main body part.
2. The lower control arm according to claim 1, wherein said body structure is integrally formed by liquid swaging.
3. The lower control arm as set forth in claim 1 wherein said body structure has first and second end surfaces disposed opposite each other in a thickness extending direction;
the first end face and the second end face are respectively provided with a first weight reduction groove and a second weight reduction groove.
4. The lower control arm as set forth in claim 3 wherein said first weight-reducing recess includes a first recess and a second recess;
the first groove extends from the first extension part to the main body part and is Y-shaped and branched, and the second groove is located on the second extension part.
5. The lower control arm as set forth in claim 3 wherein said second weight-reducing recess includes at least two spaced apart recesses;
the at least two mutually isolated recesses are located at least one of the main body portion, the first extension portion and the second extension portion.
6. The lower control arm as set forth in claim 3 wherein said body structure has an I-shaped cross-sectional section with said first and second weight-reducing recesses disposed opposite one another;
the I-shaped section is located in at least one of the main body portion, the first extension portion and the second extension portion.
7. The lower control arm as claimed in claim 1, wherein the main body portion is provided with a first through hole penetrating the main body portion in a thickness extending direction.
8. The lower control arm according to claim 7, wherein a second through hole is formed on an inner wall surface of the first through hole, a third mounting portion is fixedly connected or integrally formed in the second through hole, and a fourth mounting hole is formed in the third mounting portion.
9. The lower control arm according to claim 8, wherein a bushing is disposed in each of the first, second, and fourth mounting holes, and a ball and pin assembly is disposed in the third mounting hole.
10. A vehicle characterized by comprising a lower control arm according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911273452.6A CN110978923A (en) | 2019-12-12 | 2019-12-12 | Lower control arm and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911273452.6A CN110978923A (en) | 2019-12-12 | 2019-12-12 | Lower control arm and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110978923A true CN110978923A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911273452.6A Pending CN110978923A (en) | 2019-12-12 | 2019-12-12 | Lower control arm and vehicle |
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| Country | Link |
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| CN (1) | CN110978923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109510A (en) * | 2020-09-17 | 2020-12-22 | 北京汽车集团越野车有限公司 | Independent suspension system and vehicle |
| CN112172429A (en) * | 2020-10-13 | 2021-01-05 | 北京汽车集团越野车有限公司 | Lower A word arm structure, lower A word arm assembly, suspension system and vehicle |
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| DE102011010367A1 (en) * | 2011-02-04 | 2012-08-09 | Daimler Ag | Suspension part i.e. control arm, for motor vehicle i.e. passenger car, has amplification structure made of plastic to amplify base body, where base body is made of fiber reinforced plastic using fiber depositor |
| CN103358841A (en) * | 2012-04-01 | 2013-10-23 | 广州汽车集团股份有限公司 | Swinging arm of automobile suspension system, corresponding suspension system and automobile |
| CN205149432U (en) * | 2015-11-09 | 2016-04-13 | 北京长城华冠汽车科技股份有限公司 | Suspension system's of vehicle swing arm and suspension system |
| CN107719054A (en) * | 2017-11-09 | 2018-02-23 | 北京汽车研究总院有限公司 | A kind of lower control arm and automobile |
| CN109606043A (en) * | 2018-12-25 | 2019-04-12 | 安徽科源机械有限公司 | A kind of the Lower Sway Arm of Automobile |
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2019
- 2019-12-12 CN CN201911273452.6A patent/CN110978923A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101164801A (en) * | 2006-10-13 | 2008-04-23 | 阿拉维沙辅助工业股份有限公司 | Connecting and stress transmitting element |
| DE102011010367A1 (en) * | 2011-02-04 | 2012-08-09 | Daimler Ag | Suspension part i.e. control arm, for motor vehicle i.e. passenger car, has amplification structure made of plastic to amplify base body, where base body is made of fiber reinforced plastic using fiber depositor |
| CN103358841A (en) * | 2012-04-01 | 2013-10-23 | 广州汽车集团股份有限公司 | Swinging arm of automobile suspension system, corresponding suspension system and automobile |
| CN205149432U (en) * | 2015-11-09 | 2016-04-13 | 北京长城华冠汽车科技股份有限公司 | Suspension system's of vehicle swing arm and suspension system |
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| CN109606043A (en) * | 2018-12-25 | 2019-04-12 | 安徽科源机械有限公司 | A kind of the Lower Sway Arm of Automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109510A (en) * | 2020-09-17 | 2020-12-22 | 北京汽车集团越野车有限公司 | Independent suspension system and vehicle |
| CN112172429A (en) * | 2020-10-13 | 2021-01-05 | 北京汽车集团越野车有限公司 | Lower A word arm structure, lower A word arm assembly, suspension system and vehicle |
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Application publication date: 20200410 |