CN107161217B - Promote preceding sub vehicle frame reinforcing support structure of rear suspension mounting point rigidity - Google Patents
Promote preceding sub vehicle frame reinforcing support structure of rear suspension mounting point rigidity Download PDFInfo
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- CN107161217B CN107161217B CN201710475395.4A CN201710475395A CN107161217B CN 107161217 B CN107161217 B CN 107161217B CN 201710475395 A CN201710475395 A CN 201710475395A CN 107161217 B CN107161217 B CN 107161217B
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 57
- 239000000725 suspension Substances 0.000 title claims abstract description 39
- 238000010009 beating Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000005728 strengthening Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 7
- 210000003205 muscle Anatomy 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 abstract description 6
- 238000002955 isolation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides a front auxiliary frame reinforcing support structure for improving the rigidity of a rear suspension mounting point, which can effectively improve the rigidity of the engine rear suspension mounting point, can meet the modal rigidity of an auxiliary frame in a vehicle body mounting state, and improves the NVH performance of a vehicle. This preceding sub vehicle frame strengthens supporting structure includes sub vehicle frame body, front longitudinal and strengthens the support, strengthen the support one end with the preceding overlap joint roof beam of preceding sub vehicle frame body is connected, and the other end is connected with front longitudinal. The invention strengthens the connection relation between the front auxiliary frame and the front longitudinal beam of the vehicle body by adding two reinforcing brackets, improves the rigidity of the engine rear suspension mounting point on the auxiliary frame, particularly obviously improves the Z-direction rigidity of the engine rear suspension mounting point, is beneficial to controlling the Z direction of the excitation of the engine and the excitation of the road surface, can effectively control the vibration transmitted to the vehicle body through the front auxiliary frame, improves the vibration isolation rate, reduces the vibration amplitude transmitted to the vehicle by the power assembly and the road surface, and further improves the NVH performance of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobile chassis, in particular to a front auxiliary frame reinforcing support structure for improving the rigidity of a rear suspension mounting point.
Background
The automobile power assembly suspension system is a bridge connecting the power assembly and the automobile body, and plays important roles of bearing, limiting and isolating vibration. In order to save space, the rear suspensions of most vehicle types are selectively mounted on the front auxiliary frame. With the increasing requirements of customers on NVH performance, the rigidity requirements of chassis connectors for various automobile manufacturers are also increased. The rigidity of the rear suspension mounting point, particularly the Z-direction rigidity, is a weaker link of a common vehicle type and is also a point needing to be considered in the design process, so that more attention is paid to the rigidity.
The existing front auxiliary frame is fixedly connected with a vehicle body through 4 points, so that vibration of a power assembly and a road surface transmitted into the vehicle cannot be well controlled, and the NVH performance of the vehicle is influenced. Some vehicle types adopt modes such as the peripheral ribbing of rear suspension mounting point or installation position backward shift, but the effect is not very obvious, and the rear suspension mounting point still is difficult to reach more ideal rigidity value.
In the patent of auxiliary frame structure of vehicle and vehicle (patent publication number: CN 204355147U), a front auxiliary frame structure is invented, which comprises an upper plate and a lower plate of a rear cross beam, wherein a rear suspension reinforcing member arranged around a rear suspension mounting point is fixedly connected between the upper plate and the lower plate of the rear cross beam, although the rigidity of the rear suspension mounting point is improved to a certain extent, the connection between the front auxiliary frame and a vehicle body is not strengthened, so the improvement is limited, and the self rigidity of the front auxiliary frame and the modal frequency in the mounting state of the vehicle body are not effectively improved.
Disclosure of Invention
The invention aims to provide a front auxiliary frame reinforcing support structure for improving the rigidity of a rear suspension mounting point, which can effectively improve the rigidity of the engine rear suspension mounting point, can meet the modal rigidity of an auxiliary frame in a vehicle body mounting state, and improves the NVH performance of a vehicle.
The front subframe reinforcing support structure for improving the rigidity of the rear suspension mounting point is characterized by comprising a front subframe body, a front longitudinal beam and a reinforcing support, wherein one end of the reinforcing support is connected with a front lap beam of the front subframe body, and the other end of the reinforcing support is connected with the front longitudinal beam.
According to the front subframe reinforcing support structure for improving the rigidity of the rear suspension mounting point, the pair of reinforcing supports are arranged between the left/right front longitudinal beams of the vehicle body and the front lap beam of the front subframe body, so that the rigidity of the engine rear suspension mounting point on the front subframe can be improved, the vibration isolation rate is improved, the vibration amplitude of a power assembly and a road surface transmitted into the vehicle is reduced, the modal rigidity of the front subframe in the vehicle body mounting state is improved, and the NVH performance of the vehicle is improved.
Further, strengthen the support and be the panel beating reinforcement, the vertical cross-section of the body of strengthening the support is the shape of falling L, strengthen the support body and include a pair of outer panel, the middle part connecting plate of connecting the outer panel, the top connecting plate of lateral part. The enhancement support body of structure like this, on the one hand, vertical support through two outer panels and middle part connecting plate can guarantee bearing structure's firm under the prerequisite that satisfies the lightweight, improves the reliability, and on the other hand, the upper end of strengthening the support body is passed through the top connecting plate and is connected with the left/right front longitudinal of automobile body, can convenient to detach, is favorable to the modular production.
Furthermore, the bottom of the top connecting plate is provided with a reinforced inner side plate. Through setting up the enhancement interior plate, can strengthen the vertical thickness of top connecting plate to be connected with the right front longitudinal of automobile body left side/through the bolt fastening mode conveniently, and guarantee to strengthen support body upper end connection structure's reliability.
Further, the interior panel beating of front longitudinal with it is equipped with interior riser to strengthen the leg joint department, the surface of interior riser is equipped with protruding muscle, the inboard welding of protruding muscle has the threaded sleeve, it is equipped with the bolt hole to strengthen the top connecting plate correspondence of support. Because the front longitudinal of general automobile body all is the sheet metal component that is welded by interior panel beating and outer panel beating, through setting up interior riser, strengthen the structural strength of automobile body left/right front longitudinal and enhancement leg joint on the one hand, improve collision security, on the other hand, telescopic connection is better than the joint strength of general nut, through protruding muscle welded screw sleeve, can make the automobile body left/right front longitudinal more firm with being connected of strengthening the support, reduce the risk of automobile body left/right front longitudinal and strengthening the leg joint panel beating fracture.
Furthermore, the bottom of the reinforcing support is welded with the front lap-joint beam, and a notch matched with the contour of the upper end of the front lap-joint beam is formed in the bottom of the outer side plate of the reinforcing support. The stability of strengthening support and preceding overlap joint roof beam welded is guaranteed through setting up of breach.
Furthermore, the width of the middle connecting plate is larger than that of the outer side plate, so that the strength and the rigidity of the reinforcing support are improved.
Furthermore, the arc transition of junction of middle part connecting plate and top connecting plate to avoid this junction stress too concentrated, lead to the panel beating fracture.
Furthermore, the middle connecting plate is provided with a reinforcing rib. In practical application, the reinforcing ribs of the middle connecting plate are preferably arranged into irregularly-shaped special-shaped reinforcing ribs so as to further increase the strength and rigidity of the reinforcing bracket.
Compared with the existing auxiliary frame structure, the front auxiliary frame reinforcing bracket structure for improving the rigidity of the rear suspension mounting point has the following advantages:
1. the connection relation between the front auxiliary frame and the front longitudinal beam of the vehicle body is enhanced by adding two reinforcing brackets, the rigidity of the rear suspension mounting point of the engine on the auxiliary frame is improved, particularly the Z-direction rigidity of the rear suspension mounting point of the engine can be obviously improved, the Z-direction control on the excitation of the engine and the excitation of a road surface is facilitated, the vibration transmitted to the vehicle body through the front auxiliary frame can be effectively controlled, the vibration isolation rate is improved, the vibration amplitude transmitted into the vehicle by a power assembly and the road surface is reduced, the NVH performance of the vehicle is improved, and the modal rigidity of the front auxiliary frame in the vehicle body installation state is also improved;
2. the reinforcing support is simple and reliable in structure, small in size, light in weight, low in cost, abundant in mounting position space, convenient to arrange, simple in mounting process, strong in implementability, convenient to detach and favorable for modular production.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the reinforcing stent body of the present invention.
Fig. 3 is a partial structural view of a joint of the reinforcing brace and the front side member of the present invention.
Fig. 4 is a schematic view of the mounting structure of the inner riser of the present invention.
Fig. 5 is a second schematic view of the mounting structure of the inner riser of the present invention.
FIG. 6 is a schematic view of the position of the rear suspension mounting point of the subframe of the present invention.
In which the figures are as follows: 1. a front subframe body; 10. mounting points of the engine rear suspension; 11. a front lap beam; 2. left/right front stringers; 21. a front longitudinal beam inner metal plate; 22. an outer metal plate of the front longitudinal beam; 3. a reinforcing bracket; 31. an outer panel; 310. a notch; 32. an outer panel; 320. a notch; 33. a middle connecting plate; 330. reinforcing ribs; 34. a top connection plate; 340. bolt holes; 35. reinforcing the inner side plate; 4. an inner vertical plate; 41. a raised rib; 42. a threaded sleeve.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Referring to fig. 1 to 5, the front subframe reinforcing bracket structure for improving the rigidity of a rear suspension mounting point of the present invention includes a front subframe body 1, a front longitudinal beam 2, and a reinforcing bracket 3, wherein one end of the reinforcing bracket 3 is connected to a front lap beam 11 of the front subframe body 1, and the other end is connected to the front longitudinal beam 2.
The front sub-frame reinforcing bracket structure for improving the rigidity of a rear suspension mounting point can improve the rigidity of an engine rear suspension mounting point 10 on a front sub-frame 1 by arranging a pair of reinforcing brackets 3 between a left/right front longitudinal beam 2 of a vehicle body and a front lap beam 11 of a front sub-frame body 1, as shown in figure 6, generally for a front suspension home car, the rear suspension mounting point 10 is positioned at the middle position of the upper rear part of the front sub-frame body 1, a rear suspension cushion is arranged in the middle of the upper and lower panels of the front sub-frame 1 and is connected with the front sub-frame 1 through a bolt, so the rigidity and the strength of the structure of the front sub-frame 1 have great influence on the rigidity of the rear suspension mounting point, the invention is favorable for Z-direction control of engine excitation and road excitation by improving the Z-direction rigidity of the engine rear suspension mounting point, and can effectively control the vibration transmitted to the vehicle, meanwhile, the vibration isolation rate is improved, the vibration amplitude of the power assembly and the vibration amplitude of the road surface transmitted into the vehicle are reduced, and the modal rigidity of the front auxiliary frame 1 in the vehicle body installation state is improved, so that the NVH performance of the vehicle is improved.
In a preferred embodiment, the reinforcing bracket 3 is a sheet metal reinforcing member, the vertical cross section of the body of the reinforcing bracket 3 is in an inverted L shape, and the reinforcing bracket body 3 includes an outer side plate 31 and an outer side plate 32 on the side portions, a middle connecting plate 33 connecting the outer side plate 31 and the outer side plate 32, and a top connecting plate 34. The enhancement support body 3 of structure like this, on the one hand, vertical support through two outer panels 31, outer panel 32 and middle part connecting plate 33 can guarantee bearing structure's firm under the prerequisite that satisfies the lightweight, improves the reliability, and on the other hand, the upper end of strengthening support body 3 is passed through top connecting plate 34 and is connected with the left/right front longitudinal member of automobile body, can convenient to detach, is favorable to the modular production.
Preferably, the bottom of the top connecting plate 34 is provided with a reinforcing inner side plate 35. Through setting up reinforcing inner side panel 35, can strengthen the vertical thickness of top connecting plate 34 to be connected with automobile body left/right front longitudinal girder 2 through the bolt fastening mode conveniently, and guarantee to strengthen 3 upper end connection structure's of support body reliability.
Preferably, the junction of the inner metal plate 21 of the front longitudinal beam 2 and the reinforcing support 3 is provided with an inner vertical plate 4, the surface of the inner vertical plate 4 is provided with a raised rib 41, the inner side of the raised rib 41 is welded with a threaded sleeve 42, and the top connecting plate 34 of the reinforcing support 3 is correspondingly provided with a bolt hole 340. Because the front longitudinal of general automobile body all is the sheet metal component that becomes by interior panel beating and outer panel beating welding, through setting up interior riser 4, strengthen the structural strength of automobile body left/right front longitudinal 2 and the enhancement support 3 junction on the one hand, improve collision security, on the other hand, telescopic connection is better than the joint strength of general nut, through protruding muscle 41 welded screw sleeve 42, can make the automobile body left/right front longitudinal 2 and the connection of strengthening the support 3 more firm, reduce the risk of automobile body left/right front longitudinal 2 and the fracture of strengthening the support 3 junction panel beating. In practical application, the four-way edge of the inner vertical plate 4 is set to be a bending structure, the bending part is connected with the inner metal plate 21 of the front longitudinal beam 2 through 4 welding spots close to the inner side surface and two welding spots on the upper end surface and the lower end surface, and the outer metal plate 22 of the front longitudinal beam 2 is connected through 4 welding spots close to the outer side surface, so that the rigidity and the strength of the inner vertical plate 4 are improved.
Preferably, the bottom of the reinforcing bracket 3 is welded to the front bridging beam 11, and the bottom of the outer side plate 31 and the bottom of the outer side plate 32 of the reinforcing bracket 3 are respectively provided with a notch 310 and a notch 320 which are matched with the upper end profile of the front bridging beam 11. The stability of the welding of the reinforcing support 3 and the front bridging beam 11 is ensured by the arrangement of the notches 310 and 320.
Preferably, the width of the middle connecting plate 33 is larger than the widths of the outer plates 31 and 32, so as to improve the strength and rigidity of the reinforcing bracket 3.
Preferably, the connection between the middle connecting plate 33 and the top connecting plate 34 is in arc transition, so as to avoid the excessive stress concentration at the connection, which leads to the cracking of the sheet metal.
Preferably, the middle connecting plate 33 is provided with a reinforcing rib 330. In practical applications, the reinforcing ribs 330 of the middle connecting plate 33 are preferably configured as irregularly-shaped reinforcing ribs to further increase the strength and rigidity of the reinforcing frame 3 itself.
Claims (7)
1. The utility model provides a promote preceding sub vehicle frame reinforcing support structure of back suspension mounting point rigidity, its characterized in that includes preceding sub vehicle frame body, front longitudinal and strengthens the support, strengthen the support one end with the preceding overlap beam of preceding sub vehicle frame body is connected, and the other end is connected with the front longitudinal, the interior panel beating of front longitudinal with it is equipped with interior riser to strengthen the leg joint department, the surface of interior riser is equipped with protruding muscle, the inboard welding of protruding muscle has the thread bush, the top connecting plate correspondence of strengthening the support is equipped with the bolt hole.
2. The structure of claim 1, wherein the reinforcing bracket is a sheet metal reinforcing member, the vertical cross section of the body of the reinforcing bracket is in an inverted L shape, and the body of the reinforcing bracket comprises a pair of lateral outer plates, a middle connecting plate and a top connecting plate, wherein the middle connecting plate is connected with the lateral outer plates.
3. The front subframe stiffening bracket structure for improving the stiffness of a rear suspension mounting point of claim 2 wherein the bottom of the top web is provided with a stiffening inner side panel.
4. The front subframe reinforcing bracket structure for improving the rigidity of a rear suspension mounting point as claimed in claim 1, 2 or 3, wherein the bottom of the reinforcing bracket is welded to the front lap beam, and the bottom of the outer panel of the reinforcing bracket is provided with a notch adapted to the contour of the upper end of the front lap beam.
5. The front subframe stiffening bracket structure for improving the stiffness of a rear suspension mounting point of claim 2 or 3 wherein the width of the center web is greater than the width of the outer side panel.
6. The front subframe reinforcement bracket structure for improving the rigidity of the rear suspension mounting point according to claim 5, wherein the joint of the middle connecting plate and the top connecting plate is in arc transition.
7. The front subframe stiffening bracket structure for increasing the stiffness of a rear suspension mounting point of claim 6 wherein the mid-web is provided with stiffening ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475395.4A CN107161217B (en) | 2017-06-21 | 2017-06-21 | Promote preceding sub vehicle frame reinforcing support structure of rear suspension mounting point rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475395.4A CN107161217B (en) | 2017-06-21 | 2017-06-21 | Promote preceding sub vehicle frame reinforcing support structure of rear suspension mounting point rigidity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107161217A CN107161217A (en) | 2017-09-15 |
| CN107161217B true CN107161217B (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710475395.4A Active CN107161217B (en) | 2017-06-21 | 2017-06-21 | Promote preceding sub vehicle frame reinforcing support structure of rear suspension mounting point rigidity |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839460B (en) * | 2017-10-24 | 2020-09-04 | 奇瑞汽车股份有限公司 | Automobile front and rear suspension arrangement scheme |
| CN113715910A (en) * | 2021-10-14 | 2021-11-30 | 宜宾凯翼汽车有限公司 | Automobile body mounting structure of front auxiliary frame of automobile |
| CN115042862B (en) * | 2022-07-11 | 2023-10-31 | 奇瑞汽车股份有限公司 | Sub vehicle frame assembly and vehicle |
| CN117382729A (en) * | 2023-10-17 | 2024-01-12 | 浙江吉利控股集团有限公司 | Luggage compartment floor support structure and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089361A (en) * | 2001-09-19 | 2003-03-25 | Mitsubishi Automob Eng Co Ltd | Power unit loading device |
| JP2003160060A (en) * | 2001-11-22 | 2003-06-03 | Nissan Motor Co Ltd | Body front structure |
| CN105946972A (en) * | 2016-06-06 | 2016-09-21 | 中色科技股份有限公司 | Environment-friendly aluminum alloy automobile sub-frame |
| CN106005015A (en) * | 2016-08-05 | 2016-10-12 | 北京宏瑞汽车科技股份有限公司 | Frame structure for pure electric vehicle |
| CN106043437A (en) * | 2016-06-28 | 2016-10-26 | 浙江吉利控股集团有限公司 | Collision energy absorption device and automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202783386U (en) * | 2012-07-28 | 2013-03-13 | 奇瑞汽车股份有限公司 | Reinforcing structure for connecting auxiliary frame and automobile body of automobile |
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2017
- 2017-06-21 CN CN201710475395.4A patent/CN107161217B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089361A (en) * | 2001-09-19 | 2003-03-25 | Mitsubishi Automob Eng Co Ltd | Power unit loading device |
| JP2003160060A (en) * | 2001-11-22 | 2003-06-03 | Nissan Motor Co Ltd | Body front structure |
| CN105946972A (en) * | 2016-06-06 | 2016-09-21 | 中色科技股份有限公司 | Environment-friendly aluminum alloy automobile sub-frame |
| CN106043437A (en) * | 2016-06-28 | 2016-10-26 | 浙江吉利控股集团有限公司 | Collision energy absorption device and automobile |
| CN106005015A (en) * | 2016-08-05 | 2016-10-12 | 北京宏瑞汽车科技股份有限公司 | Frame structure for pure electric vehicle |
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