CN213676910U - Commercial car fender support and mounting structure thereof - Google Patents
Commercial car fender support and mounting structure thereof Download PDFInfo
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- CN213676910U CN213676910U CN202022382528.3U CN202022382528U CN213676910U CN 213676910 U CN213676910 U CN 213676910U CN 202022382528 U CN202022382528 U CN 202022382528U CN 213676910 U CN213676910 U CN 213676910U
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- fender
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- mounting hole
- fender support
- bracket
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Abstract
The utility model belongs to the automobile field specifically establishes and a commercial car fender support and mounting structure thereof. The utility model discloses the fender support is the metal die casting of L type, and L type bent angle department designs for the obtuse angle, and the upper and lower level is the load transmission route of two parallels on the metal die casting, sets up many stands between two routes, makes the inside a plurality of closed rings that form of metal die casting structure. The utility model discloses disclose an use simultaneously the mounting structure of commercial car fender support. The material of the utility model is reasonably distributed in space, and the weight reduction rate is more than 50%; the assembly process is simple, and the cost is reduced; the rigidity, the strength, the modal frequency and the fatigue life of the bracket are obviously improved, and the bracket is safe and reliable.
Description
Technical Field
The utility model belongs to the automobile field specifically establishes and a commercial car fender support and mounting structure thereof.
Background
Commercial vehicle front wheel rear fenders are of various forms, and it is common for the fenders to be fixed to a welded bracket assembly which is in turn attached to the frame or cab rear suspension. The existing fender bracket used for the commercial vehicle comprises a steel casting mounting bracket (an authorized bulletin number CN 206171583U, an authorized bulletin day 2017.05.17), a steel plate stamping and welding bracket, a steel pipe bending and welding bracket (an authorized bulletin number CN 210707646U, an authorized bulletin day 2020.06.09) and the like. The fender bracket is a typical cantilever beam structure, and when a vehicle runs on an uneven road, bending deformation, torsion deformation and even bending and torsion combined deformation occur, and even when the vehicle runs on a flat road, the vehicle can be excited by the road surface and an engine to generate vibration, which brings great challenges to the lightweight design of the fender bracket. In order to meet the reliability requirements, the fender bracket must not only have sufficient rigidity and good fatigue durability, but also be able to avoid resonance. In order to solve the problem, a reinforcing plate or a reinforcing pipe is often welded on the traditional steel bracket, but the manufacturing process is increased, the weight of the fender assembly is also increased, and the lightweight design is difficult to realize. In addition, the fender bracket is close to the tire, sand and stones splashed in the running process of the vehicle easily damage an antirust layer on the surface of the steel bracket, splashes such as slurry brought up by the tire adhere to the fender bracket to accelerate the rusting of the bracket, and the service life is shortened, so that the steel plate stamping and welding bracket and the steel pipe bending and welding bracket are not ideal structures. An authorization notice No. CN 209382104U authorization notice No. 2019.09.13 discloses a fender support assembly of a die-casting magnesium alloy support and magnesium alloy support bolt connection structure, which is obvious in weight reduction effect, but needs a plurality of parts to be formed by bolt connection, and is high in assembly precision requirement, high in material cost and large in market popularization difficulty. In addition, the commercial vehicle fender bracket is always exposed in the external environment, the surface of the magnesium alloy is easy to corrode, and the service life is greatly shortened. In summary, a fender bracket having light weight, good reliability, and simple assembly is yet to be developed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect, the utility model discloses a commercial car fender support, the fender support is the metal die casting of L type, and L type bent angle department designs for the obtuse angle, and the upper and lower edge of fender support is the load transmission route of two parallels, sets up many stands between two routes, makes the inside a plurality of closed rings that form of fender support.
Further, the utility model discloses commercial car fender support, fender support's long arm edge is equipped with the fender mounting hole, and the fender mounting hole design is the boss and lays the dowel.
Further, the utility model discloses commercial car fender support, the air cleaner support mounting hole is seted up to the higher authority of fender support, air cleaner support mounting hole designs for the slotted hole shape.
Further, the utility model discloses commercial car fender support is equipped with the support mounting hole on fender support's the short arm, and the support mounting hole design is the boss and lays the dowel.
The utility model discloses simultaneously disclose an use commercial car fender support's mounting structure, including fender, fender support, air cleaner fixed bolster, frame, the fender passes through the fender mounting hole and installs in fender support long arm the place ahead, and the air cleaner fixed bolster passes through the air cleaner support mounting hole and installs at fender support rear, and the fender support passes through the support mounting hole and installs on the frame.
Now further explain according to above-mentioned structure the utility model discloses a beneficial effect:
1. the fender is fixed in front of the long arm of the fender bracket through four bolts, and the fender mounting hole and the bracket mounting hole are designed into bosses and are provided with force transmission ribs, so that the local rigidity is improved, and the hole peripheral stress is reduced.
2. The air filter support mounting hole is designed to be in the shape of a long round hole, so that tolerance can be absorbed, and assembly is guaranteed.
3. When the geometrical structure of the fender bracket is designed, the body thickness T of the part is initially determined according to die casting process requirements and topological optimization results, and the thickness T of the reinforcing rib on a load transmission path1=1.2T, rib thickness T on non-load transmission path2And =0.8t ~1 t. The thickness of the reinforcing rib obtained according to the formula is designed, so that the requirements of structural rigidity and strength performance are met, and meanwhile, the reinforcing rib is also designedThe over-design can be avoided, and the weight reduction of the structure is realized.
4. The fender support is provided with two parallel load transmission paths, a plurality of connecting upright columns are designed between the two paths, five closed rings are formed in the structure, the integral bending rigidity and the torsional rigidity are improved, the first-order natural frequency of the support is greater than 35Hz and is greater than the road excitation frequency and the engine idle frequency, the structural resonance is avoided, and meanwhile, the fatigue durability is improved.
5. The fender support is of an L-shaped cantilever structure on the whole, the obtuse angle is designed by increasing the thickness of a bent part, designing the reinforcing ribs and bending angles, stress concentration at the bent part is avoided, and the service life is prolonged.
To sum up, the bracket of the utility model adopts an aluminum alloy integrated die-casting molding process, realizes reasonable distribution of materials in space by a topology optimization means, has weight reduction rate more than 50 percent and realizes the aim of light weight; the traditional fender bracket is formed by welding or bolting a plurality of parts, the bracket of the utility model is an integrated piece, the assembly process is simple, and the cost is reduced; the utility model provides an empirical formula of the thickness of the reinforcing rib, and the reinforcing rib designed according to the formula can avoid over-design and realize lightweight design on the premise of meeting the mechanical performance; many closed rings of support embedding between the load transmission path of two parallels make support rigidity, intensity, modal frequency and fatigue life all obtain showing and improve, support safe and reliable.
Drawings
Fig. 1 is a schematic view of the installation structure of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the closed loop of the present invention;
in the figure: 1. the automobile fender comprises a frame, 2 parts of fender supports, 3 parts of fenders and 4 parts of air filter fixing supports;
201. bracket mounting holes, 205 fender mounting holes, 209 air filter bracket mounting holes;
301. a first closed ring, 302, a second closed ring, 303, a third closed ring, 304, a fourth closed ring, 305, a fifth closed ring.
Detailed Description
According to the scheme shown in the figures 1-3, the fender support 2 of the commercial vehicle is a metal die casting in an L shape, the L-shaped bent angle is designed to be an obtuse angle, the upper edge and the lower edge of the fender support 2 are two parallel load transmission paths, and a plurality of stand columns are arranged between the two paths, so that a plurality of closed rings are formed inside the fender support 2.
As optimizing structure, the utility model discloses fender support 2's long arm edge is equipped with fender mounting hole 205, and fender mounting hole 205 designs for the boss and lays the dowel.
As optimizing structure, the utility model discloses air cleaner support mounting hole 209 is seted up to fender support 2's the higher authority, air cleaner support mounting hole designs for the slotted hole shape.
As optimizing structure, the utility model discloses be equipped with support mounting hole 201 on fender support 2's the short arm, support mounting hole designs for the boss and lays the dowel.
The utility model discloses provide a use simultaneously commercial car fender support's mounting structure, including fender 3, fender support 2, air cleaner fixed bolster 4, frame 1, fender 3 passes through the fender mounting hole and installs in fender support long arm the place ahead, and air cleaner fixed bolster 4 passes through the air cleaner support mounting hole and installs in 2 backs of fender support, and the fender support passes through the support mounting hole and installs on frame 1.
Claims (5)
1. The utility model provides a commercial car fender support which characterized in that: fender support (2) are the metal die casting of L type, and L type bent angle department designs for the obtuse angle, and the upper and lower limit of fender support (2) is the load transmission route of two parallels, sets up many stands between two routes, makes fender support (2) inside a plurality of closed rings that form.
2. A commercial vehicle fender support according to claim 1 wherein: the long arm edge of fender support (2) is equipped with fender mounting hole (205), and fender mounting hole (205) design is the boss and lays the dowel.
3. A commercial vehicle fender support according to claim 1 wherein: an air filter support mounting hole (209) is formed in the upper edge of the fender support (2), and the air filter support mounting hole is designed to be in a long round hole shape.
4. A commercial vehicle fender support according to claim 1 wherein: the short arm of the fender bracket (2) is provided with a bracket mounting hole (201), and the bracket mounting hole is designed into a boss and is provided with a force transmission rib.
5. A mounting structure using the fender panel support of a commercial vehicle according to any one of claims 1 to 4, characterized in that: including fender (3), fender support (2), air cleaner fixed bolster (4), frame (1), install in fender support long arm the place ahead through the fender mounting hole fender (3), install at fender support (2) rear through air cleaner support mounting hole air cleaner fixed bolster (4), the fender support passes through the support mounting hole and installs on frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022382528.3U CN213676910U (en) | 2020-10-23 | 2020-10-23 | Commercial car fender support and mounting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022382528.3U CN213676910U (en) | 2020-10-23 | 2020-10-23 | Commercial car fender support and mounting structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213676910U true CN213676910U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022382528.3U Active CN213676910U (en) | 2020-10-23 | 2020-10-23 | Commercial car fender support and mounting structure thereof |
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| Country | Link |
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| CN (1) | CN213676910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113468676A (en) * | 2021-07-27 | 2021-10-01 | 重庆长安汽车股份有限公司 | Design method of aluminum alloy fender mounting bracket and mounting bracket |
-
2020
- 2020-10-23 CN CN202022382528.3U patent/CN213676910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113468676A (en) * | 2021-07-27 | 2021-10-01 | 重庆长安汽车股份有限公司 | Design method of aluminum alloy fender mounting bracket and mounting bracket |
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