CN115123392A - Automobile-used chassis anticollision institution and electric automobile - Google Patents

Abstract

The invention provides an anti-collision mechanism for a vehicle chassis and an electric vehicle, comprising a hollow beam arranged on the chassis and an anti-collision component installed in the hollow beam, the anti-collision component including a hollow beam arranged in the hollow beam An anti-collision buffer layer and an anti-collision reinforcement block group, the hollow beam triggers the anti-collision reinforcement block group by contacting the anti-collision buffer layer during a collision, so as to reduce the collision impact of the vehicle. The vehicle chassis anti-collision mechanism and the electric vehicle provided by the present invention adopt a special collision protection scheme, and the rigidity of the chassis is increased by changing the arrangement of the anti-collision reinforcement blocks in the chassis without increasing the weight of the body and the battery. , reducing the amount of collision deformation, and at the same time, the collision reinforcement block is easy to replace and reset, reducing its maintenance cost.

Description

Vehicle chassis anti-collision mechanism and electric vehicle

technical field

The invention relates to the technical field of vehicle safety protection, in particular to a vehicle chassis anti-collision mechanism and an electric vehicle.

Background technique

After the precipitation of multiple technical sectors, electric vehicles have become a high-quality platform for innovative product applications, and the integration of batteries and bodies has gradually increased. However, because batteries require a high enough safety level, especially after a collision, the circuit needs to be cut off in time, and the It is necessary to reduce the deformation of the battery itself to avoid short circuit caused by excessive extrusion of the battery module; reduce the maintenance cost of the body and battery in the later stage; and the current body design scheme is difficult in terms of small collision deformation, large collision safety and collision maintenance cost. Take into account.

Therefore, it is necessary to upgrade and transform the anti-collision mechanisms such as the body sill beams, longitudinal beams, and front and rear bumpers of electric vehicles.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an anti-collision mechanism for a vehicle chassis and an electric vehicle. By changing the arrangement of the collision reinforcement blocks inside the chassis beams, the vehicle body design scheme can solve the problems of small collision deformation, large collision safety and other problems. Collision repair costs and other issues that are difficult to take into account.

The vehicle chassis anti-collision mechanism and the electric vehicle provided by the present invention include a hollow beam disposed on the chassis and an anti-collision assembly installed in the hollow beam, and the anti-collision assembly includes an anti-collision assembly disposed in the hollow beam. A crash buffer layer and an anti-collision reinforcing block group are provided, and the hollow beam triggers the anti-collision reinforcing block group by contacting the anti-collision buffer layer during a collision, so as to reduce the collision impact of the vehicle.

Further, the anti-collision buffer layer is arranged on the inner surface side of the outer plate of the hollow beam for slowing down the collision and triggering the anti-collision reinforcing block group; the anti-collision reinforcing block group is arranged on the rear side of the anti-collision buffer layer, used for Strengthen the overall rigidity of the hollow beam.

Further, the anti-collision reinforcing block group is composed of several anti-collision reinforcing blocks, and inclined surfaces for sliding fit are provided between the anti-collision reinforcing blocks in the vertical direction.

Further, an elastic piece for connection is provided between the anti-collision reinforcing block group and the bottom plate of the hollow beam, and the elastic piece is connected with the bottom of the bottom anti-collision reinforcing block in the anti-collision reinforcing block group.

Further, a telescopic piece for connecting and fixing is provided between the anti-collision reinforcing block group and the anti-collision buffer layer, and the telescopic piece is connected and fixed with the top anti-collision reinforcing block in the anti-collision reinforcing block group.

Further, the telescopic element is a telescopic pull rod formed by folding and stretching several sections of pull rods, and the number of the pull rods is the same as the number of the anti-collision reinforcement blocks; the telescopic pull rods are used to limit the vertical movement of the anti-collision reinforcement blocks.

Further, the top of the anti-collision reinforcement block is provided with a positioning groove for positioning and avoiding the telescopic pull rod.

Further, the anti-collision mechanism further includes a limit plate erected on the bottom plate of the hollow beam and a support plate horizontally arranged and connected to the top of the limit plate and the inner plate of the hollow beam.

Further, an accommodating groove for accommodating the anti-collision reinforcing block is formed between the limit plate and the anti-collision buffer layer, and the accommodating groove can limit the lateral displacement of the anti-collision reinforcing block; The support plate moves along the length direction of the telescopic rod.

The invention also discloses an electric vehicle, wherein the electric vehicle is installed with the vehicle chassis anti-collision mechanism according to any one of claims 1-9.

The beneficial effects of the present invention are as follows: the vehicle chassis anti-collision mechanism and the electric vehicle provided by the present invention adopt a special collision protection scheme. In order to increase the rigidity of the chassis and reduce the amount of collision deformation, the collision reinforcement block is easy to replace and reset, reducing its maintenance cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

Fig. 1 is the initial state schematic diagram of the anti-collision mechanism of the present invention;

2 is a schematic diagram of the triggering state of the anti-collision mechanism of the present invention;

Fig. 3 is the schematic diagram of the extension state of the telescopic rod in the present invention;

4 is a schematic diagram of the compression state of the telescopic pull rod in the present invention;

FIG. 5 is a schematic diagram of the structure of the reinforcement block in the present invention.

Wherein, the above drawings include the following reference numerals: 1-top anti-collision reinforcing block I; 2- middle anti-collision reinforcing block; 3-bottom anti-collision reinforcing block; 4- telescopic rod; 5- anti-collision buffer layer; 6- Spring; 7-limiting plate; 8-support plate; 22-positioning slot I; 32-positioning slot II;

Detailed ways

As shown in the figure, the vehicle chassis anti-collision mechanism provided by the present invention includes a hollow beam disposed on the chassis and an anti-collision assembly installed in the hollow beam, and the anti-collision assembly includes a hollow beam disposed in the hollow beam The anti-collision buffer layer and the anti-collision reinforcing block group are provided, and the hollow beam triggers the anti-collision reinforcing block group by contacting the anti-collision buffer layer during collision to reduce the impact of the vehicle collision.

The anti-collision mechanism is mainly suitable for hollow beams. By making some of the beams on the chassis that come into contact with the vehicle first into hollow beams, and installing the anti-collision components inside the hollow beams, it can ensure that the body does not increase. Under the premise of weight, the structure of beams is simplified, the difficulty of making beams is reduced, and the overall rigidity of the chassis is ensured; In the cavity of the door sill beam composed of plates, when the vehicle collides, the outer plate of the hollow beam first contacts the anti-collision buffer layer 5, and then triggers the anti-collision reinforcing block group to move the anti-collision reinforcing block to the inner plate of the hollow beam and press against the hollow beam The inner plate and the anti-collision buffer layer 5 enhance the overall rigidity and strength of the hollow beam and reduce the impact force caused by the collision.

In this embodiment, the anti-collision buffer layer 5 is arranged on the inner surface side of the outer plate of the hollow beam, and is used to slow down the collision and trigger the anti-collision reinforcing block group; the anti-collision reinforcing block group is arranged on the anti-collision buffer layer 5 The rear side is used to strengthen the overall rigidity of the hollow beam. As shown in FIG. 1 , the anti-collision buffer layer 5 can reduce the impact force generated by the collision to a certain extent when the vehicle has a general small collision; and when the intrusion of the collision exceeds the thickness of the buffer layer, it can be triggered in time. The anti-collision reinforcing block moves to the inner plate of the hollow beam, so that the anti-collision reinforcing block can press against the inner and outer plates of the hollow beam in time before the hollow beam structure is damaged, so that the strength of the hollow beam is increased.

In this embodiment, the anti-collision reinforcing block group is composed of several anti-collision reinforcing blocks, and an inclined surface for sliding cooperation is provided between the anti-collision reinforcing blocks in the vertical direction; the anti-collision reinforcing block group An elastic piece for connection is arranged between the hollow beam bottom plate, and the elastic piece is connected with the bottom of the bottom anti-collision reinforcing block in the group of anti-collision reinforcing blocks.

As shown in Figure 1 and Figure 2, the number of anti-collision reinforcing blocks in the anti-collision reinforcing block group is determined according to the size of the internal cavity of different hollow beams, and the weight and rigidity of each block need to be determined according to the specific use. In this embodiment, there are three anti-collision reinforcing blocks in the anti-collision reinforcing block group, which are respectively the top anti-collision reinforcing block 1, the middle anti-collision reinforcing block 2 and the bottom anti-collision reinforcing block 3; Except for the anti-collision reinforcement blocks, the top and bottom of each anti-collision reinforcement block are inclined surfaces parallel to each other, while the top anti-collision reinforcement block 1 has only the bottom surface inclined and the bottom anti-collision reinforcement block 3 has only the top surface inclined. All the inclined surfaces of the anti-collision reinforcing blocks in the anti-collision reinforcing block group are smooth contact surfaces, the purpose is to reduce the friction between the anti-collision reinforcing blocks and facilitate the sliding cooperation of the anti-collision reinforcing blocks; the anti-collision reinforcing block at the bottom is reinforced An elastic member is installed between the bottom surface of the block and the bottom plate of the hollow beam, and the elastic member is mainly a spring 6 in the conventional technology. Elasticity guaranteed.

In specific use, the included angle of the smooth contact surface between the anti-collision reinforcing blocks is θ, the elastic force F of the spring 6 is upward, and the gravity G of the anti-collision reinforcing block group is downward. The gravity of the top anti-collision reinforcing block 1 is G1, and the top anti-collision The gravity of the collision reinforcement block 1 is G1, the gravity of the middle collision reinforcement block 2 is G2, and the gravity of the bottom collision reinforcement block 3 is G3; for example, the upward force of the top collision reinforcement block 1 is F1=(F-G2- G3)-G1=F-G, and the upward force F2=(F-G3)-(G2+G3)=F-G on the middle bumper 2 is consistent with the upward force described in the top bumper 1, so F1=F2, the relative sliding force between the smooth surfaces of the bumper reinforcement is F3=F1*sin(θ), and the angle of the smooth contact surface can be selected from 10° to 80°.

In this embodiment, a telescopic piece for connecting and fixing is provided between the anti-collision reinforcing block group and the anti-collision buffer layer 5, and the telescopic piece is connected and fixed with the top anti-collision reinforcing block 1 in the anti-collision reinforcing block group; The telescopic piece is mainly a connecting piece with telescopic function and sensing function, which is used to connect and fix the top anti-collision reinforcing block 1 and the anti-collision buffer layer 5. Before a collision occurs, the telescopic piece provides a fulcrum for the upper anti-collision reinforcing block to deal with minor collisions. It can be deformed and can restrict the movement of the top anti-collision reinforcing block 1, so that the anti-collision reinforcing block group can be maintained in a single-layer arrangement; after a collision, it can sense and release the top anti-collision block in time when the anti-collision buffer layer 5 is damaged. The restriction of the collision reinforcement block 1 makes the top collision prevention reinforcement block 1 move to the inner plate of the hollow beam under the action of the sliding force, and at the same time, the middle collision prevention reinforcement block 2 and the bottom collision prevention reinforcement block 3 lose the restriction of the top collision prevention reinforcement block 1. , can move upward in sequence under the action of the spring force, and under the action of the sliding force, the anti-collision reinforcing block group can be automatically adjusted to a state of multi-layer superimposed arrangement.

In this embodiment, as shown in FIG. 3 and FIG. 4 , the telescopic element is a telescopic pull rod 4 formed by folding and stretching several sections of pull rods. The number of the pull rods is the same as the number of anti-collision reinforcement blocks. The first section of tie rod 41, the second section of tie rod 42 and the third section of tie rod 43; before the collision, the tie rods are in a retracted state, providing a relatively large rigidity, maintaining a relatively stable position between multiple collisions, and dealing with slight collision deformation; once When a collision occurs, the pull rod quickly stretches, moves with the anti-collision reinforcing block, and limits the vertical displacement of the anti-collision reinforcing block; at the same time, the telescopic pull rod 4 can also be replaced or re-used at the same time as the anti-collision reinforcing block during maintenance.

In this embodiment, as shown in FIG. 2 and FIG. 5 , the top of the anti-collision reinforcement block is provided with a positioning groove for positioning and avoiding the telescopic pull rod; The upper part of the bottom anti-collision reinforcement block 3 is provided with limit grooves, which are respectively the positioning groove I31 and the positioning groove II32. By setting the positioning groove I31 and the positioning groove II32, not only the middle anti-collision reinforcement block 2 and the bottom anti-collision reinforcement block 3 can be limited The vertical displacement can also enable the middle anti-collision reinforcing block 2 and the bottom anti-collision reinforcing block 3 to be closely arranged according to the predetermined position, so as to realize the state of multi-layer superimposed arrangement.

In this embodiment, it also includes a limit plate 7 erected on the bottom plate of the hollow beam and a support plate 8 horizontally arranged and connected to the top of the limit plate and the inner plate of the hollow beam; the limit plate 7 and the anti-collision buffer layer 5 An accommodating groove for accommodating the anti-collision reinforcing block is formed therebetween, and the accommodating groove can limit the lateral displacement of the anti-collision reinforcing block; direction move.

1 and 2, the limit plate 7 and the anti-collision buffer layer 5 can laterally limit the middle anti-collision reinforcing block 2 and the bottom anti-collision reinforcing block 3, and are the middle anti-collision reinforcing block before the collision occurs. 2 and the bottom anti-collision reinforcement block 3 provide a fulcrum to cope with minor collision and deformation; the support plate 8 can provide a fulcrum for the anti-collision reinforcement block after a collision occurs to deal with large deformation collisions; at the same time, the surface of the support plate 8 is coated with grease, which can effectively reduce Movement resistance between the bumper and the bumper.

In this embodiment, when a small collision occurs in the vehicle, the anti-collision buffer layer 5, the telescopic pull rod 4 and the limit plate 7 can cooperate to limit the displacement of the anti-collision reinforcement block group, so that the single-layer arrangement device can cope with small collisions. Collision deformation; when the collision intrusion exceeds the thickness of the collision layer, the telescopic rod 4 is triggered, so that the top anti-collision reinforcement block 1 connected to the upper part moves to the left along the support plate 8, and the middle anti-collision reinforcement block 2 and the bottom anti-collision reinforcement are strengthened. Under the action of the spring force, the block 3 moves upward in turn, and at the same time, under the action of the relative support force of the sliding force of the inclined surface, it moves to the left along the support plate 8 in sequence until it is limited by the telescopic rod, so that the anti-collision reinforcement block group automatically Adjusted to a multi-layer superimposed arrangement, the rigidity of the hollow beam and the chassis is significantly increased, and the increase is proportional to the number of collision blocks.

The invention also discloses an electric vehicle, which uses a CTC chassis, and the anti-collision mechanism is installed on the CTC chassis. CTC chassis technology refers to the integrated design of the battery, the chassis and the lower body. By redesigning the battery carrying tray, the entire lower body chassis structure is coupled with the battery tray structure. By reducing redundant structural design, it can effectively reduce the number of parts and components. Quantity, while improving space utilization and system specific energy, the structure of the body and the battery are complementary, so that the impact resistance of the battery and the torsional stiffness of the body are greatly improved. The anti-collision mechanism in the present invention can effectively solve the problems of small collision deformation, large collision safety and collision maintenance cost; after the collision occurs, the deformation of the battery itself is reduced, so as to avoid the short circuit caused by excessive extrusion of the battery module, reducing the Small late body and battery repair costs.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A vehicle chassis anti-collision mechanism is characterized in that: comprising a hollow beam arranged on the chassis and an anti-collision assembly installed in the hollow beam, and the anti-collision assembly comprises a hollow beam arranged in the hollow beam. The anti-collision buffer layer and the anti-collision reinforcement block group, the hollow beam triggers the anti-collision reinforcement block group by contacting the anti-collision buffer layer during the collision, so as to reduce the collision impact of the vehicle. 2 . The anti-collision mechanism for a vehicle chassis according to claim 1 , wherein the anti-collision buffer layer is arranged on the inner surface side of the outer plate of the hollow beam for slowing down the collision and triggering the anti-collision reinforcing block group; 3 . The anti-collision reinforcing block group is arranged on the rear side of the anti-collision buffer layer, and is used to strengthen the overall rigidity of the hollow beam. 3 . The anti-collision mechanism for a vehicle chassis according to claim 2 , wherein the group of anti-collision reinforcing blocks is composed of several anti-collision reinforcing blocks, and the anti-collision reinforcing blocks are arranged in a vertical direction. 4 . Has sloped surfaces for slip fit. 4 . The anti-collision mechanism for a vehicle chassis according to claim 3 , wherein an elastic member for connection is provided between the anti-collision reinforcement block group and the hollow beam bottom plate, and the elastic member is connected to the bottom plate of the hollow beam. 5 . The bottom crash reinforcement blocks in the crash reinforcement block group are connected at the bottom. 5 . The anti-collision mechanism for a vehicle chassis according to claim 2 , wherein a telescopic piece for connecting and fixing is provided between the anti-collision reinforcing block group and the anti-collision buffer layer, and the telescopic piece is connected to the anti-collision block. 6 . The top anti-collision reinforcement blocks in the reinforcement block group are connected and fixed. 6 . The anti-collision mechanism for a vehicle chassis according to claim 5 , wherein the telescopic element is a telescopic pull rod formed by folding and stretching several sections of pull rods, and the number of the pull rods is the same as the number of anti-collision reinforcement blocks; The telescopic pull rod is used to limit the vertical movement of the anti-collision reinforcement block. 7 . The anti-collision mechanism for a vehicle chassis according to claim 6 , wherein the top of the anti-collision reinforcing block is provided with a positioning groove for positioning and avoiding the telescopic pull rod. 8 . 8 . The anti-collision mechanism for a vehicle chassis according to claim 1 , wherein the anti-collision mechanism further comprises a limit plate vertically arranged on the bottom plate of the hollow beam, and a horizontally arranged and connected top of the limit plate and the hollow beam. 9 . Support plate for inner plate. 9 . The anti-collision mechanism for a vehicle chassis according to claim 8 , wherein an accommodating groove for accommodating the anti-collision reinforcing block is formed between the limit plate and the anti-collision buffer layer, and the accommodating groove can limit the The lateral displacement of the anti-collision reinforcing block; the anti-collision reinforcing block moves along the length direction of the telescopic rod on the support plate through the telescopic rod. 10. An electric vehicle, characterized in that: the electric vehicle is equipped with the vehicle chassis anti-collision mechanism according to any one of claims 1-9.

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