CN213768723U - Front structure of platform vehicle body - Google Patents

Abstract

The utility model belongs to the technical field of vehicle body structure, in particular to a front structure of a platformized vehicle body, which comprises a front anti-collision beam, an inner side energy absorption box and an outer side energy absorption box which are arranged in parallel, a front longitudinal beam and a side reinforcing plate arranged outside the front longitudinal beam, wherein the front anti-collision beam, the inner side energy absorption box and the outer side energy absorption box are sequentially connected along the vehicle body direction; the front end of the side reinforcing plate is provided with a reinforcing piece which is opposite to the outer side energy absorption box; the outboard crash box and the reinforcement are removable. Through setting up detachable outside energy-absorbing box and detachable reinforcement, according to the car of different motorcycle types, the inboard energy-absorbing box of dismantlement and/or reinforcement of selection guarantee that the automobile body front portion can satisfy different anticollision performance requirements, and the commonality is good.

Description

Front structure of platform vehicle body

Technical Field

The utility model relates to an automobile body structure technical field, concretely relates to front structure of platformization automobile body.

Background

With the increasingly intense competition in the automobile market, the pressure on the launching speed of new automobile models and the cost of single automobiles is increased continuously, and automobile manufacturers increasingly pay more attention to the generalization of automobile parts, so that the automobile parts can meet the requirements of automobiles of different automobile types.

Automobiles of different models have different safety performance requirements, and the anti-collision performance of the automobiles needs to be considered in the process of realizing the generalization of the front part of the automobile body. After the automobile is collided, in order to ensure the safety of passengers, on one hand, the automobile needs to have enough plastic deformation space at the front part of the automobile body so as to conveniently deform the front part of the automobile body, absorb collision energy, reduce the peak value of the acceleration of the collided automobile body and reduce the impact load transmitted to the passenger compartment to the minimum; on the other hand, the front part of the vehicle body is required to have enough rigidity, so that the deformation of the front part of the vehicle body is avoided being overlarge, the passenger in the passenger compartment is ensured to have enough living space, the vehicle door is ensured to be smoothly opened, and the passenger can conveniently escape and be conveniently rescued from the outside.

At present, in order to reduce the research and development cost of automobiles, a general automobile body structure needs to be developed urgently, and different anti-collision performance requirements of automobiles of different automobile types are met.

Disclosure of Invention

An object of the utility model is to provide a front structure of platformization automobile body to satisfy the different anticollision performance requirements of the car of different motorcycle types.

The scheme of the utility model is as follows:

the front structure of the platformized car body comprises a front anti-collision beam, an inner side energy absorption box and an outer side energy absorption box which are arranged in parallel, a front longitudinal beam and a side reinforcing plate arranged on the outer side of the front longitudinal beam, wherein the front anti-collision beam, the inner side energy absorption box and the outer side energy absorption box are sequentially connected along the car body direction;

the front end of the side reinforcing plate is provided with a reinforcing piece which is opposite to the outer side energy absorption box;

the outboard crash box and the reinforcement are removable.

Preferably, the rear ends of the inner energy absorption box and the outer energy absorption box are attached to the first mounting plate; the front end of the front longitudinal beam is abutted against the second mounting plate; the first mounting plate and the second mounting plate are detachably connected with the rear ends of the inner side energy absorption box and the outer side energy absorption box and are attached to the first mounting plate; the front end of the front longitudinal beam is abutted against the second mounting plate; the first mounting plate is detachably connected with the second mounting plate.

Preferably, the second mounting plate is fixed with a detachable connecting piece, and the connecting piece is provided with a notch; part of the side wall of the front end of the reinforcing piece is embedded into the notch.

Preferably, the notch is provided with a flange, and the flange is attached to part of the side wall of the notch, in which the reinforcing piece is embedded.

Preferably, the side reinforcing plate extends out of the lapping surface towards the direction of the reinforcing piece; the faying surface holds up the reinforcement below the reinforcement.

Preferably, the reinforcing element is formed by splicing a first profile and a second profile; the first profile and the second profile form a cavity in a cross section of the stiffener.

Preferably, the cross section of the first section bar is angular, the second section bar is attached to the edge of the first section bar, the middle part of the second section bar protrudes in the direction far away from the first section bar, and the middle part of the second section bar is matched with the middle part of the first section bar to form the quadrilateral cavity.

Preferably, the front side member front portion forms a box-shaped cushion member; the buffer piece comprises an upper cavity right facing the inner side energy absorption box and a lower cavity located right below the upper cavity.

Preferably, the side walls of the upper cavity and the lower cavity facing the outer side of the vehicle body are formed by buffer plates, and collapse holes and collapse ribs are arranged on the buffer plates.

Preferably, the crumple rib is formed on the surface of the upper cavity and is in a vertically-recessed groove shape; the collapse holes are formed in the surface of the lower cavity and are square holes.

Adopt the technical scheme of the utility model, through setting up detachable outside energy-absorbing box and detachable reinforcement, according to the car of different motorcycle types, the inboard energy-absorbing box of dismantlement and/or reinforcement of selection guarantee that the automobile body front portion can satisfy different anticollision performance requirements, and the commonality is good.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic structural view of the connection of the energy absorbing member;

FIG. 3 is a schematic view of the structure of the joint of the reinforcing members;

FIG. 4 is a schematic structural view of a reinforcing member;

FIG. 5 is a schematic structural view of a connector;

FIG. 6 is a schematic structural view of a buffer member;

FIG. 7 is a schematic structural diagram according to a second embodiment;

FIG. 8 is a schematic structural view of the third embodiment;

fig. 9 is a schematic structural diagram of a fourth embodiment.

In the figure, a front anti-collision beam 1, an energy absorber 2, an inner energy absorber box 21, an outer energy absorber box 22, a first mounting plate 3, a second mounting plate 4, a buffer material 5, a buffer plate 51, a collapse rib 52, a collapse hole 53, a front longitudinal beam 6, a side reinforcing plate 7, a reinforcing piece 8, a first section bar 81, a second section bar 82, a connecting piece 9, a notch 91 and a flanging 92.

Detailed Description

The following is further detailed by the specific embodiments:

example one

As shown in fig. 1, the present embodiment is a front structure of a flatbed vehicle body, and the vehicle includes a front impact beam 1, an energy absorbing member 2, and a front side member 6 in this order from front to rear. And a side reinforcing plate 7 is arranged outside the front longitudinal beam 6, the front end of the side reinforcing plate 7 is suspended, and the rear end of the side reinforcing plate is connected to the passenger compartment. Since the vehicle frame at the front portion of the vehicle body is a bilaterally symmetric structure, in the present embodiment, the vehicle body front portion structure of the present embodiment is described with respect to only the vehicle body side member.

The section of the front anti-collision beam 1 in the embodiment is of a concave structure; the front anti-collision beam 1 is provided with a concave-convex surface facing the rear of the vehicle body, so that the front anti-collision beam 1 has a better energy absorption effect. The two ends of the front anti-collision beam 1 are provided with variable curvature sections, the curvature radius of the variable curvature sections is smaller than that of the middle part of the front anti-collision beam 1, and more installation spaces can be reserved for the headlamp.

The absorber 2 includes an inner crash box 21 and an outer crash box 22 arranged in parallel in the vehicle width direction. The front ends of the inner energy absorption box 21 and the outer energy absorption box 22 are fixed on the variable curvature section to form a double energy absorption box structure with a long inner side and a short outer side. The double energy-absorbing box structure arranged in the embodiment can increase the overlapping rate between the front anti-collision beam 1 and the energy-absorbing piece 2, and when the front anti-collision beam 1 is impacted by collision, the inner side energy-absorbing box 21 and the outer side energy-absorbing box 22 can effectively absorb the energy of collision expansion, so that the impact load transmitted backwards is reduced. In addition, the outer energy absorption box 22 fills the blank behind the end part of the front anti-collision beam 1, and particularly when offset collision occurs, the outer energy absorption box 22 can absorb part of collision energy generated by the offset collision, so that the offset collision prevention performance of the automobile is improved.

As shown in fig. 2, the first mounting plate 3 and the second mounting plate 4 are provided behind the inner crash box 21 and the outer crash box 22 in this order. The rear ends of the inner energy absorption box 21 and the outer energy absorption box 22 are fixedly welded on the first mounting plate 3, and the first mounting plate 3 is fixed with the second mounting plate 4. Between first mounting panel 3 and the second mounting panel 4 in this embodiment is detachable structure, and first mounting panel 3 passes through the bolt fastening on the second mounting panel 4 in first mounting panel 3 rear. For the collision performance of different vehicle types, the inner side energy absorption box 21 is selectively installed on the first installation plate 3, or the inner side energy absorption box 21 and the outer side energy absorption box 22 are installed on the first installation plate 3, and the first installation plate 3 is fixed on the second installation plate 4, so that the replacement of a single energy absorption box structure and a double energy absorption box structure is realized, the different collision performance requirements of different vehicle types are met, and the universality is good.

In this embodiment, the rear portion of the second mounting plate 4 is connected to the front side member 6, and the front side member 6 faces the inner crash box 21. The inner crash box 21 can transmit collision energy to the passenger compartment through the front side member 6, and disperse an impact load through the passenger compartment. A reinforcing piece 8 is arranged on the outer side of the front longitudinal beam 6, and the front end of the reinforcing piece 8 is fixed on the second mounting plate 4 and is opposite to the outer energy absorption box 22; the middle part of the reinforcing piece 8 is far away from the front longitudinal beam 6 and is bent upwards; the rear end of the reinforcement 8 is connected to the front end face of the side reinforcement plate 7. The outer crash box 22 can transmit collision energy to the passenger compartment through the reinforcement 8 and the side reinforcing plate 7, increases a path of transmission of the collision energy, can effectively disperse impact load, has small deformation of the front portion of the vehicle body, and can reduce the deformation amount of the passenger compartment. Particularly, when offset collision occurs, the outer energy-absorbing box 22 and the reinforcing member 8 fill the gap between the side reinforcing plate 7 and the front impact beam 1, and the outer energy-absorbing box 22 absorbs part of collision energy, so that the impact load transmitted to the passenger compartment through the reinforcing member 8 and the side reinforcing plate 7 is small, and the performance of preventing offset collision is strong.

As shown in fig. 3 and 5, the front end of the reinforcement member 8 is fixed to the second mounting plate 4 by a connecting member 9, the connecting member 9 is plate-shaped, and a notch 91 is formed in an edge of the connecting member 9. Part of the side wall of the reinforcing member 8 is fitted into the notch 91 and fixed in the notch 91. In order to ensure that the connecting piece 9 and the reinforcing piece 8 are firmly fixed, the notch 91 is also provided with a flange 92, and the flange 92 is attached to the surface of the part, embedded into the connecting piece 9, of the reinforcing piece 8, so that the contact area between the connecting piece 9 and the reinforcing piece 8 is increased. The connecting piece 9 is fixed on the second mounting plate 4 through bolts, so that a detachable structure is formed between the front end of the front side reinforcing piece 8 and the second reinforcing plate. Can be according to the car of different motorcycle types, the installation reinforcement 8 of selectivity guarantees that the automobile body front portion can satisfy different anticollision performance requirements, and the commonality is good. The side reinforcing plates 7 extend towards the reinforcement 8 with a bridging surface which is adapted to the contour of the lower part of the reinforcement 8 and which lifts the reinforcement 8 from below.

As shown in fig. 4, the reinforcing member 8 is formed by splicing a first section 81 and a second section 82, the first section 81 has an angular cross section, and the second section 82 is disposed on the recessed side of the first section 81. The edge of the second section bar 82 is attached to the edge of the first section bar 81, and the middle of the second section bar 82 is matched with the first formed middle to form a cavity in a parallelogram shape, so that the structural strength is ensured.

In the present embodiment, the front side member 6 is shaped like a channel, and the notch of the front side member 6 faces the vehicle body outer side. As shown in fig. 6, the front side member 6 forms a box-shaped cushion 5 in front; the buffer 5 comprises an upper cavity facing the inner energy absorption box 21 and a lower cavity located right below the upper cavity. The side walls of the upper cavity and the lower cavity towards the outer side of the vehicle body are formed by buffer plates 51, and the upper parts of the buffer plates 51 are attached to notches in the front parts of the front longitudinal beams 6; the buffer plate 51 forms an upper cavity of the buffer 5 in cooperation with the notch in the front portion of the front side member 6. The lower part of the cushion plate 51 forms a lower cavity of the cushion 5 in cooperation with the second mounting plate 4 and the surrounding plate provided below the front side member 6. The cushion 5 formed at the front end of the front side frame 6 can absorb part of the collision energy, reduce the impact load transmitted to the rear of the front side frame 6, and contribute to reducing the deformation amount of the passenger compartment.

The cushion plate 51 of the cushion member 5 is provided with collapse holes 53 and collapse ribs 52, which contribute to collapse and energy absorption of the box-shaped cushion member 5. In this embodiment, the collapsing ribs 52 are formed on the side walls of the upper cavity, and are in the form of vertically recessed grooves, and are used for guiding the cushion 5 to collapse and deform in the front-rear direction of the vehicle body. The collapse holes 53 are formed in the side walls of the lower cavity and are square holes, which contributes to deformation of the buffer member 5, and the weight of the buffer member 5 can be reduced to reduce the weight.

The front structure of the platformized vehicle body in this embodiment has both the outer crash boxes 22 and the reinforcement 8, and is suitable for a vehicle model with high collision resistance.

When the front anti-collision beam 1 is in a frontal collision, impact load is mainly transmitted to the energy absorbing piece 2 from the front anti-collision beam 1 in a frontal direction, in the embodiment, because the two ends of the front anti-collision beam 1 both comprise the outer energy absorbing box 22 and the inner energy absorbing box 21, the overlapping area of the front anti-collision beam 1 and the outer energy absorbing box 22 and the inner energy absorbing box 21 is large, the outer energy absorbing box 22 and the inner energy absorbing box 21 can collapse and deform, and the collision energy received by the front anti-collision beam 1 is effectively absorbed.

The inner crash box 21 absorbs part of the collision energy, transmits the impact load to the cushion 5, and the cushion 5 collapses and deforms to absorb part of the collision energy again, and transmits the impact load to the passenger compartment through the front side member 6. In this embodiment, both the inner crash box 21 and the cushion 5 can attenuate the collision energy, and the passenger compartment receives an impact load and has a low probability of deformation. After the outer crash box 22 absorbs a part of the collision energy, the impact load is transmitted to the reinforcement 8, and the reinforcement 8 transmits the impact load to the passenger compartment through the side reinforcing plate 7. The outer energy absorption box 22 and the reinforcing part 8 can disperse impact load, so that stress concentration of the passenger compartment is avoided, the deformation probability of the passenger compartment is further reduced, and the passenger can conveniently escape and outside rescue.

When offset collision occurs, the outer energy absorption box 22 and the reinforcing piece 8 at the end part of the front anti-collision beam 1 can transmit impact load, and the effect of preventing the offset collision of the automobile is good.

Example two

As shown in fig. 7, the vehicle body front portion of the present embodiment includes the front impact beam 1, the inner crash box 21, the first mounting plate 3, the second mounting plate 4, the cushion 5, the front side member 6, and the side reinforcing plate 7 structure described in the first embodiment. The front end of the side reinforcing plate 7 in the embodiment is provided with a reinforcing piece 8 connected with the second mounting plate 4. The difference from the first embodiment is that only the inner crash box 21 is mounted on the first mounting plate 3 in this embodiment.

In this embodiment, when the front impact beam 1 is impacted by a collision, only the inner crash boxes 21 absorb the collision energy, and the energy absorption effect is inferior to that of the first embodiment. In the embodiment, the reinforcing part 8 is still arranged, and the front part of the vehicle body is provided with two force transmission structures, so that the impact load transmitted to the passenger compartment can be effectively dispersed.

In the embodiment, no supporting structure is arranged between the reinforcing member 8 and the front impact beam 1, and the embodiment has poorer offset collision prevention performance than the embodiment I. The embodiment is suitable for the vehicle model with medium anti-collision performance.

EXAMPLE III

As shown in fig. 8, the vehicle body front portion of the present embodiment includes the front impact beam 1, the energy absorber 2, the first mounting plate 3, the second mounting plate 4, the cushion member 5, the front side member 6, and the side reinforcing plate 7 described in the first embodiment, and the energy absorber 2 in the present embodiment includes the inner crash box 21 and the outer crash box 22. The difference from the first embodiment is that the side reinforcing plate 7 in the present embodiment is not provided with the reinforcing member 8 at the front end.

In this embodiment, when the front impact beam 1 is impacted by a collision, the inner energy-absorbing box 21, the outer energy-absorbing box 22 and the buffer 5 can be deformed by collapsing, so as to absorb the collision energy, reduce the impact load transmitted to the passenger compartment, and reduce the deformation probability of the passenger compartment. In the case of an offset collision, the outer crash boxes 22 can absorb part of the impact load, but the reinforcing member 8 is not installed in the present embodiment, the load dispersing ability is weak, and the collision resistance of the present embodiment is inferior to that of the first embodiment, and the present embodiment is suitable for a vehicle model with a medium collision resistance

Example four

As shown in FIG. 9, the present embodiment differs from the first embodiment in that the energy absorber 2 of the present embodiment includes only the inner crash box 21, and the front reinforcement 8 is not attached to the front end of the side gusset 7.

In the present embodiment, there is no structure between the front impact beam 1 and the side gusset 7, and the impact applied to the front impact beam 1 is transmitted to the front passenger compartment only through the inner crash box 21, the cushion 5, and the front side member 6. The collision prevention performance of the front portion of the vehicle body in this embodiment is lower than that of the front portion of the vehicle body in the first to third embodiments. The vehicle body front structure in the embodiment is suitable for vehicle types with weak anti-collision performance requirements.

It should be noted that, in the first to fourth embodiments, the classification regarding the high anti-collision performance, the medium anti-collision performance, and the low anti-collision performance is obtained by comparing the four body structures of the present invention with each other. The utility model provides a low grade anticollision performance also satisfies the safety standard of national and industry regulation.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims (10)

1. The front structure of the platformized car body comprises a front anti-collision beam, an inner side energy absorption box and an outer side energy absorption box which are arranged in parallel, a front longitudinal beam and a side reinforcing plate arranged on the outer side of the front longitudinal beam, wherein the front anti-collision beam, the inner side energy absorption box and the outer side energy absorption box are sequentially connected along the car body direction;

it is characterized in that the preparation method is characterized in that,

the front end of the side reinforcing plate is provided with a reinforcing piece which is opposite to the outer side energy absorption box;

the outboard crash box and the reinforcement are removable.

2. The front structure of a platformized vehicle body according to claim 1, characterized in that: the rear ends of the inner side energy absorption box and the outer side energy absorption box are attached to the first mounting plate; the front end of the front longitudinal beam is abutted against the second mounting plate; the first mounting plate is detachably connected with the second mounting plate.

3. The front structure of a flatbed vehicle body according to claim 2, characterized in that: a detachable connecting piece is fixed on the second mounting plate, and a notch is formed in the connecting piece; part of the side wall of the front end of the reinforcing piece is embedded into the notch.

4. The front structure of a flatbed vehicle body according to claim 3, characterized in that: the notch is provided with a flange, and the flange is attached to part of the side wall of the notch, in which the reinforcing piece is embedded.

5. The front structure of a platformized vehicle body according to claim 4, characterized in that: the side reinforcing plate extends out of a lapping surface towards the direction of the reinforcing piece; the faying surface holds up the reinforcement below the reinforcement.

6. The front structure of a flatbed vehicle body according to any one of claims 1 to 5, wherein: the reinforcing piece is formed by splicing a first profile and a second profile; the first profile and the second profile form a cavity in a cross section of the stiffener.

7. The front structure of a flatbed vehicle body according to claim 6, characterized in that: the cross section of the first section bar is angular, the second section bar is attached to the edge of the first section bar, the middle of the second section bar protrudes in the direction far away from the first section bar, and the middle of the second section bar is matched with the middle of the first section bar to form a quadrilateral cavity.

8. The front structure of a platformized vehicle body according to claim 7, characterized in that: a box-shaped buffer piece is formed in the front of the front longitudinal beam; the buffer piece comprises an upper cavity right facing the inner side energy absorption box and a lower cavity located right below the upper cavity.

9. The front structure of a platformized vehicle body according to claim 8, characterized in that: the side walls of the upper cavity and the lower cavity facing the outer side of the vehicle body are formed by buffer plates, and collapse holes and collapse ribs are arranged on the buffer plates.

10. The front structure of a platformized vehicle body according to claim 9, characterized in that: the crumple rib is formed on the surface of the upper cavity and is in a vertically-recessed groove shape; the collapse holes are formed in the surface of the lower cavity and are square holes.

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