CN212500664U - Front auxiliary frame collision guide support assembly and front auxiliary frame collision guide mechanism - Google Patents

Abstract

The utility model provides a preceding sub vehicle frame collision guide support assembly, including collision direction upper plate and collision direction hypoplastron, collision direction upper plate is including the first atress board of horizontal setting and the second atress board and the third atress board of vertical setting, the lower extreme of second atress board with the front end body coupling of first atress board, the upper end of third atress board with the right-hand member body coupling of first atress board, collision direction hypoplastron is "Z" shape structure, bolted connection is passed through on the top of collision direction hypoplastron in the lower surface of first atress board. The utility model also provides a preceding sub vehicle frame collision guiding mechanism.

Description

Front auxiliary frame collision guide support assembly and front auxiliary frame collision guide mechanism

Technical Field

The utility model relates to the field of automotive technology, especially, relate to a preceding sub vehicle frame collision guide bracket assembly and preceding sub vehicle frame collision guiding mechanism.

Background

With the increase of the whole vehicle weight of the passenger vehicle and the continuous improvement of the collision safety requirement, the requirement for the chassis part to participate in collision energy absorption is higher and higher. In order to meet new standards, the chassis part and the vehicle body structure are usually matched in the whole vehicle design stage, and the chassis part and the vehicle body structure form an energy absorption 'double channel' to deal with vehicle collision. The main part for absorbing energy in the chassis part is a front auxiliary frame which bears more load under the working conditions of direct collision and offset collision, but in the working condition of 25% small-area offset collision in the working condition of offset collision, because the overlapping area of a vehicle and a barrier is smaller, a longitudinal beam structure of the front auxiliary frame cannot completely participate in the collision working condition.

Patent CN106143612B discloses a sub vehicle frame mounting point structure, mainly carries out design optimization to the mounting point structure, can drop in the vehicle collision process, reduces the injury to passenger compartment passenger.

Patent CN109808771A discloses a vehicle, a sub-frame mounting structure and a design method thereof, which can increase the dynamic collision space of the whole vehicle by controlling the deformation of the sub-frame and the vehicle body mounting bracket and the bolt failure under the condition of a certain front overhang size, and improve the bearing capacity of the dynamic collision space, thereby improving the whole energy absorption efficiency of the vehicle, reducing the invasion of the vehicle power assembly to the front wall, and reducing the direct impact on the passenger compartment.

The two patents are different from the patent in design purpose, implementation method and application.

Patent CN203854596U discloses an anticollision roof beam before car, couples in sub vehicle frame/longeron front end before the car, promotes the energy-absorbing effect of buffering through the design optimization of preceding anticollision roof beam. However, in the structure provided by the patent, the protection mark is formed by stamping, the manufacturing period is long, the cost is high, and the arrangement limitation is large under the trend of short front overhang of the vehicle.

Combining the technical solutions of the above patents, the prior art mainly has the disadvantages of complex process, heavy weight and high cost. For guaranteeing collision strength and durability, collision avoidance structure adopts the steel punching press of high strength, welding to obtain more, is subject to the vehicle front cabin and arranges space and bear the weight of the characteristics, and this kind of collision avoidance structure has the structure easily and is heavy and the poor shortcoming of platform expansibility, and collision avoidance structure and automobile body cabin longeron generally adopt four or more spiro union modes, have taken the space of arranging of a large amount of front wheels front ends, and the price/performance ratio, manufacturability, the structure commonality and the expansibility of product are relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a preceding sub vehicle frame collision guide bracket assembly aims at solving the not enough that above-mentioned background art exists, makes compact structure and can show and promote the crashworthiness.

The utility model provides a preceding sub vehicle frame collision guide support assembly, including collision direction upper plate and collision direction hypoplastron, collision direction upper plate is including the first atress board of horizontal setting and the second atress board and the third atress board of vertical setting, the lower extreme of second atress board with the front end body coupling of first atress board, the upper end of third atress board with the right-hand member body coupling of first atress board, collision direction hypoplastron is "Z" shape structure, bolted connection is passed through on the top of collision direction hypoplastron in the lower surface of first atress board.

Further, first atress board is the right triangle structure, the lower extreme of second atress board with the first right-angle side body coupling of first atress board, the second atress board perpendicular to first atress board upwards extends, the upper end of third atress board with the second right-angle side body coupling of first atress board, the third atress board perpendicular to first atress board downwardly extending.

Further, still include collision direction backup pad, collision direction backup pad is "L" shape structure on the direction, collision direction backup pad is including being on a parallel with the first backup pad that the second atress board set up and being on a parallel with the second backup pad that the third atress board set up, first backup pad with second backup pad body coupling.

Further, the collision guide upper plate, the collision guide lower plate and the collision guide upper supporting plate are all formed by bending metal plates and integrally forming.

Furthermore, the first supporting plate is attached to the inner side surface of the second stress plate and is welded and fixed, and the lower end of the second supporting plate is welded and fixed with the upper surface of the first stress plate.

Furthermore, the first stress plate is provided with a first bolt mounting hole, a second bolt mounting hole is formed in the top end of the collision guide lower plate corresponding to the first bolt mounting hole, a nut is fixedly welded below the second bolt mounting hole, and the first stress plate and the collision guide lower plate are fixed through screwing.

The utility model also provides a preceding sub vehicle frame collision guiding mechanism, including preceding sub vehicle frame welding assembly, preceding sub vehicle frame collision guiding mechanism still includes above arbitrary preceding sub vehicle frame collision guide support assembly, preceding sub vehicle frame collision guide support assembly spiro union is fixed extremely on the preceding sub vehicle frame welding assembly.

Further, the quantity of preceding sub vehicle frame collision guide support assembly is two, contains preceding sub vehicle frame collision guide left socle assembly and preceding sub vehicle frame collision guide right support assembly, preceding sub vehicle frame collision guide left socle assembly with preceding sub vehicle frame collision guide right support assembly spiro union respectively is fixed extremely on the preceding sub vehicle frame welding assembly, preceding sub vehicle frame collision guide left socle assembly with preceding sub vehicle frame collision guide right support assembly is in be bilateral symmetry on the preceding sub vehicle frame welding assembly and distribute the setting.

Further, first fagging is equipped with third bolt mounting hole, the second atress board corresponds the position of third bolt mounting hole is equipped with the fourth bolt mounting hole, the third atress board is equipped with two fifth bolt mounting holes, the bottom of collision direction hypoplastron is equipped with the sixth bolt mounting hole, first fagging the second atress board the third atress board with the equal spiro union of collision direction hypoplastron is fixed to on the preceding sub vehicle frame welding assembly.

Further, preceding sub vehicle frame collision guiding mechanism still includes preceding rubber bush assembly and back rubber bush assembly, preceding rubber bush assembly with back rubber bush assembly all impresses through the frock extremely on the preceding sub vehicle frame welding assembly.

The utility model discloses a preceding sub vehicle frame collision guide bracket assembly through the rational arrangement of bending panel beating and installation fastener, effectively reduces part weight on guaranteeing collision demand and the durable basis of lifting strength, realizes the lightweight design of structure, and this guiding mechanism technology feasibility is high, and structural suitability is favorable to reduction in production cost.

Meanwhile, the guide bracket assembly is fixedly connected between the front mounting tower seat of the front auxiliary frame and the longitudinal beam of the front auxiliary frame, and the front suspension of the conventional vehicle type is not required to be rearranged and developed on the premise of ensuring the spatial arrangement and the performance of the front suspension. Particularly, the guide mechanism can be adaptively changed according to the weight of the whole vehicle and the arrangement of the periphery, is beneficial to development verification and weight reduction of the vehicle, and has great significance to platform manufacturing of structural components of a vehicle main body.

Drawings

FIG. 1 is a front view of a front subframe crash guide left bracket assembly according to an embodiment of the present invention;

FIG. 2 is a top view of the front subframe crash guide left bracket assembly according to an embodiment of the present invention;

FIG. 3 is a schematic view of the welding of the front subframe collision guide left bracket in the embodiment of the present invention;

FIG. 4 is a bottom view of the front subframe collision guide mechanism in an embodiment of the present invention;

fig. 5 is a side view of the front subframe collision guide mechanism according to the embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first," "second," "third," "fourth," "fifth," and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

As shown in fig. 4 to 5, the front subframe collision guiding mechanism provided in this embodiment includes a front rubber bushing assembly 1, a front subframe collision guiding bracket assembly, a front subframe welding assembly 6, and a rear rubber bushing assembly 7, wherein the number of the front subframe collision guiding bracket assemblies is two, and the front subframe collision guiding left bracket assembly 4 and the front subframe collision guiding right bracket assembly 5 are included.

The structure of the front sub-frame collision guide bracket assembly is described below by taking the front sub-frame collision guide left bracket assembly 4 as an example.

As shown in fig. 1 to 3, the front subframe collision guide left bracket assembly 4 includes a collision guide upper plate 42 and a collision guide lower plate 44, the collision guide upper plate 42 includes a first force-bearing plate 421 disposed horizontally and a second force-bearing plate 422 and a third force-bearing plate 423 disposed vertically, the lower end of the second force-bearing plate 422 is integrally connected with the front end of the first force-bearing plate 421, the upper end of the third force-bearing plate 423 is integrally connected with the right end of the first force-bearing plate 421, the collision guide lower plate 44 is of a "Z" shaped structure, and the top end of the collision guide lower plate 44 is connected with the lower surface of the first force-bearing plate 421 through a bolt.

Specifically, first atress board 421 is the right triangle structure, and the lower extreme of second atress board 422 and the first right-angle side of first atress board 421 are connected integratively, and second atress board 422 extends upwards perpendicularly to first atress board 421, and the upper end of third atress board 423 and the second right-angle side of first atress board 421 are connected integratively, and third atress board 423 extends downwards perpendicularly to first atress board 421.

Further, the front subframe collision guide left bracket assembly 4 further comprises a collision guide upper supporting plate 41, the collision guide upper supporting plate 41 is of an L-shaped structure, the collision guide upper supporting plate 41 comprises a first supporting plate 411 arranged in parallel with the second stress plate 422 and a second supporting plate 412 arranged in parallel with the third stress plate 423, and the first supporting plate 411 and the second supporting plate 412 are integrally connected.

Specifically, the collision guide upper support plate 41 is a reinforcing member that performs a certain guiding function, and functions to effectively transmit the collision load to the front sub-side rail together with the collision guide upper plate 42 and the collision guide lower plate 44 in the front collision condition (including the 25% small-area offset collision condition). The utility model discloses a collision direction upper plate 42, collision direction hypoplastron 44 and enhancement guide collision direction upper support plate 41 simple structure can adjust the profile and the deburring of material and thick and the piece of bending under limited arrangement space to reach the equal applicable purpose of different motorcycle types. Meanwhile, the whole vehicle scheme can be quickly and timely matched for verification in the whole vehicle V-shaped development verification process, so that the development period and the cost are saved.

Further, as shown in fig. 3, the first supporting plate 411 and the inner side surface of the second force-bearing plate 422 are attached and welded, and the lower end of the second supporting plate 412 is welded and fixed to the upper surface of the first force-bearing plate 421.

Preferably, the upper end, the lower end and the left end of the first supporting plate 411 are all fixed to the inner side surface of the second force-bearing plate 422 by welding.

Preferably, collision direction upper plate 42, collision direction hypoplastron 44 and collision direction upper support plate 41 are the panel beating and buckle integrated into one piece, adopt the panel beating structure of buckling not only simple and easy technology, the shaping is simple, and manufacturing cycle is short, moreover under the combined action of fastener and reinforcing sheet metal component, can effectively improve the deformation condition under the specific collision operating mode.

Further, the first force receiving plate 421 is provided with a first bolt mounting hole 42a, a second bolt mounting hole (not shown) is provided at a position corresponding to the first bolt mounting hole 42a at the top end of the collision guide lower plate 44, a nut 43 is fixed below the second bolt mounting hole, and the first force receiving plate 421 and the collision guide lower plate 44 are fixed by screwing.

Preferably, the first bolt mounting hole 42a has a diameter of 12mm, the second bolt mounting hole has a diameter of 10.5mm, and the nut 43 has a size of M8 × 1.0, and the first force bearing plate 421 and the collision guide lower plate 44 are threadedly engaged with the nut 43 by a bolt (not shown) having a size of M8 × 1.0 passing through the first bolt mounting hole 42a and the second bolt mounting hole.

As shown in fig. 4 and 5, the front subframe crash guide bracket assembly is bolted to the front subframe weld assembly 6.

Further, preceding sub vehicle frame collision is led left support assembly 4 and preceding sub vehicle frame collision and is led right support assembly 5 respectively the spiro union fix to preceding sub vehicle frame welding assembly 6 on, preceding sub vehicle frame collision is led left support assembly 4 and preceding sub vehicle frame collision and is led right support assembly 5 and be the bilateral symmetry distribution setting in the front on sub vehicle frame welding assembly 6.

Further, the first supporting plate 411 is provided with a third bolt mounting hole 41a, a fourth bolt mounting hole (not shown) is provided at a position of the second force-bearing plate 422 corresponding to the third bolt mounting hole 41a, the third force-bearing plate 423 is provided with two fifth bolt mounting holes 42b, a sixth bolt mounting hole 44b is provided at a bottom end of the collision guide lower plate 44, and the first supporting plate 411, the second force-bearing plate 422, the third force-bearing plate 423 and the collision guide lower plate 44 are all screwed and fixed to the front subframe welding assembly 6.

Specifically, the bolt connection relationship between the front subframe collision guide bracket assembly and the front subframe welding assembly 6 is described by taking the front subframe collision guide left bracket assembly 4 as an example: as shown in fig. 3 to 5, the first supporting plate 411 is provided with a third bolt mounting hole 41a having a diameter of phi 10mm, the second force-bearing plate 422 is provided with a fourth bolt mounting hole having a diameter of phi 12mm at a position corresponding to the third bolt mounting hole 41a, and the third bolt mounting hole 41a and the fourth bolt mounting hole are fitted with an allen-head disc head screw 3 having a size of M8 × 1.0; the third stress plate 423 is provided with two fifth bolt mounting holes 42b with the diameter phi of 10mm, and the fifth bolt mounting holes 42b are also provided with hexagon socket head cap screws 3 with the size of M8 multiplied by 1.0; the bottom end of the collision guide lower plate 44 is provided with a sixth bolt mounting hole 44b having a diameter phi of 12mm, and the sixth bolt mounting hole 44b is fitted with a hexagon socket head cap screw 2 having a size of M10 x 1.25. The front sub-frame collision guide left bracket assembly 4 is screwed and fixed to the left side of the front sub-frame welding assembly 6 through the three hexagon socket head cap screws 3 with the size of M8 multiplied by 1.0 and the one hexagon socket head cap screw 2 with the size of M10 multiplied by 1.25.

Further, the front sub-frame collision guide right bracket assembly 5 is screw-fixed to the right side of the front sub-frame welding assembly 6 in the same manner.

Further, the second stay 412 is provided with two first welding positioning holes 41b having a diameter of 10mm, and the lower end of the collision guide lower plate 44 is provided with a second welding positioning hole 44a having a diameter of 12mm near the sixth bolt-mounting hole 44 b.

When the front subframe collision guide left bracket assembly 4 is assembled, the collision guide upper support plate 41 can be welded to the second stress plate 422, and then the combined collision guide upper support plate and the collision guide lower plate 44 are fixed in a threaded manner.

Further, the front rubber bushing assembly 1 and the rear rubber bushing assembly 7 are pressed into the front subframe welding assembly 6 through a specific tool.

When the 25% small-area offset collision working condition is carried out, the overlapping area of the rigid barrier and the whole vehicle is approximately in the front rubber bushing assembly 1 and the area except the front rubber bushing assembly, and at the moment, the vehicle body longitudinal beam and the front sub-frame longitudinal beam are not in the collision overlapping area and cannot have the functions of crumpling/bending energy absorption. After the collision guide support assembly of the front auxiliary frame is added, the load under the specific collision working condition can be transmitted to the body of the welding assembly 6 of the front auxiliary frame through the collision guide left support assembly 4 of the front auxiliary frame and the collision guide right support assembly 5 of the front auxiliary frame, so that the welding assembly 6 of the front auxiliary frame participates in the energy absorption protection effect, and the collision performance of the whole vehicle is improved. Under the analysis and the collision of a whole vehicle CAE (computer Aided engineering), the intrusion amount of the key position of the dummy is reduced by about 53.6%, the acceleration peak value of the main driving side and the auxiliary driving side is reduced by about 3.7g and 7.6g respectively, and the speed zero-returning moment is reduced by about 0.5 ms.

Specifically, for example, when a 25% small-area offset collision condition is performed, the front subframe welding assembly 6 (e.g., the upper left corner and the upper right corner of the front subframe welding assembly 6 in fig. 4) near the front rubber bushing assembly 1 participates in the collision, the front end of the front subframe collision guide left bracket assembly 4 is screwed and fixed to the upper left corner of the front subframe welding assembly 6 through the first supporting plate 411 and the second stressed plate 422, and the right end and the lower end of the front subframe collision guide left bracket assembly 4 are screwed and fixed to the longitudinal beam of the front subframe welding assembly 6 through the third stressed plate 423 and the collision guide lower plate 44, respectively, so that the longitudinal beam of the front subframe welding assembly 6 can participate in the energy absorption protection function.

The utility model has the effects that:

1. the front auxiliary frame collision guide support assembly is verified to be beneficial to the collision performance of the whole vehicle under the working condition of 25% small-area offset collision, and the front overhang of the conventional vehicle type does not need to be redeveloped on the premise of ensuring the spatial arrangement and performance of a front engine room. Particularly, the collision guide mechanism of the front auxiliary frame is simple in structure, rapid development and verification of different vehicles can be realized through reasonable configuration of the bending piece and the connecting fastener, the management and control of the development period and the cost of the vehicles are facilitated, and the collision guide mechanism has great significance for platform manufacturing of a main body structure;

2. although this preceding sub vehicle frame collision guide bracket assembly simple and easy structure nevertheless has better improvement to collision performance, but structure strong adaptability is favorable to reducing development and manufacturing cost, and the improvement in the aspect of the performance is favorable to promoting the brand image simultaneously.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a preceding sub vehicle frame collision guide support assembly, its characterized in that includes collision direction upper plate (42) and collision direction hypoplastron (44), collision direction upper plate (42) are including horizontal first atress board (421) that set up and vertical second atress board (422) and the third atress board (423) that set up, the lower extreme of second atress board (422) with the front end of first atress board (421) is integrative to be connected, the upper end of third atress board (423) with the right-hand member of first atress board (421) is integrative to be connected, collision direction hypoplastron (44) are "Z" shape structure, the top of collision direction hypoplastron (44) pass through bolted connection in the lower surface of first atress board (421).

2. The front sub-frame collision guide bracket assembly according to claim 1, wherein the first force-receiving plate (421) has a right-angled triangular structure, the lower end of the second force-receiving plate (422) is integrally connected to the first right-angled side of the first force-receiving plate (421), the second force-receiving plate (422) extends upward perpendicular to the first force-receiving plate (421), the upper end of the third force-receiving plate (423) is integrally connected to the second right-angled side of the first force-receiving plate (421), and the third force-receiving plate (423) extends downward perpendicular to the first force-receiving plate (421).

3. The front sub-frame collision guide support assembly according to claim 1, further comprising a collision guide upper support plate (41), wherein the collision guide upper support plate (41) has an "L" shaped structure, the collision guide upper support plate (41) comprises a first support plate (411) disposed parallel to the second force-bearing plate (422) and a second support plate (412) disposed parallel to the third force-bearing plate (423), and the first support plate (411) and the second support plate (412) are integrally connected.

4. The front sub-frame collision guide bracket assembly according to claim 3, wherein the collision guide upper plate (42), the collision guide lower plate (44) and the collision guide upper stay plate (41) are all formed by bending a sheet metal integrally.

5. The front sub-frame collision guide bracket assembly according to claim 3, wherein the first supporting plate (411) is fitted and welded to the inner side surface of the second force-bearing plate (422), and the lower end of the second supporting plate (412) is welded to the upper surface of the first force-bearing plate (421).

6. The front sub-frame collision guide bracket assembly according to claim 3, wherein the first supporting plate (411) is provided with a third bolt mounting hole (41a), the second force-bearing plate (422) is provided with a fourth bolt mounting hole at a position corresponding to the third bolt mounting hole (41a), the third force-bearing plate (423) is provided with two fifth bolt mounting holes (42b), and the bottom end of the collision guide lower plate (44) is provided with a sixth bolt mounting hole (44 b).

7. The front sub-frame collision guide bracket assembly according to any one of claims 1 to 6, wherein the first force-receiving plate (421) is provided with a first bolt mounting hole (42a), a second bolt mounting hole is provided at a position of a top end of the collision guide lower plate (44) corresponding to the first bolt mounting hole (42a), a nut (43) is welded and fixed below the second bolt mounting hole, and the first force-receiving plate (421) and the collision guide lower plate (44) are fixed by screwing.

8. A front sub frame collision guide mechanism comprising a front sub frame weld assembly (6) and further comprising a front sub frame collision guide bracket assembly according to any one of claims 1 to 7 threadably secured to said front sub frame weld assembly (6).

9. The front sub-frame collision guide mechanism according to claim 8, wherein the number of the front sub-frame collision guide support assemblies is two, and the front sub-frame collision guide left support assembly (4) and the front sub-frame collision guide right support assembly (5) are included, the front sub-frame collision guide left support assembly (4) and the front sub-frame collision guide right support assembly (5) are respectively screwed and fixed on the front sub-frame welding assembly (6), and the front sub-frame collision guide left support assembly (4) and the front sub-frame collision guide right support assembly (5) are distributed on the front sub-frame welding assembly (6) in a left-right symmetrical manner.

10. The front sub-frame collision guide mechanism according to claim 8, further comprising a front rubber bushing assembly (1) and a rear rubber bushing assembly (7), wherein the front rubber bushing assembly (1) and the rear rubber bushing assembly (7) are pressed into the front sub-frame welding assembly (6) through a tool.

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