Energy absorption structure of sliding plate chassis

Abstract

The invention relates to a skateboard chassis energy absorption structure which comprises a vehicle body framework, a battery box shell connecting assembly and a beam structure, the battery box shell connecting assembly and the beam structure are mechanically connected with the vehicle body framework and used for achieving stress buffering of the beam structure, the battery box shell connecting assembly comprises a buffering block, and the beam structure comprises a connecting rod. The position of the connecting rod is opposite to that of the buffer block, so that the connecting rod is utilized to contact and extrude the buffer block after the beam structure is impacted; the connecting assembly penetrates through the guide groove through a connecting bolt to be mechanically connected with the mounting base so as to achieve mounting, fixing and force transmission guiding of the beam structure. Buffering and energy-absorbing effects after an automobile is collided are improved through the structural design of the buffering blocks made of foamed aluminum, the guiding effect on front impact force is achieved through the structural and shape design of the guiding grooves, the front impact force is dispersed, safety is good, the injury probability of parts and personnel on the automobile is reduced, and the energy-absorbing and anti-collision effects are good.

Description

Technical Field

[0001] The invention belongs to the field of automobile manufacturing, and in particular relates to an energy absorbing structure of a skateboard chassis. Background Art

[0002] Automobile lightweighting is to integrate structural lightweight design technology with a variety of lightweight materials and lightweight manufacturing technologies under the conditions of meeting automobile usage requirements, safety and cost control, so as to achieve the purpose of automobile weight reduction; with the continuous development of automobile lightweight technology, people's requirements for automobile safety performance are constantly increasing, especially how to maximize the protection of the safety of people and other equipment on the vehicle under automobile collision conditions is more important. For new energy vehicles, a battery housing composed of several batteries is installed inside the car body, and its safety under collision conditions is more important. Therefore, how to make the car, especially the chassis of the skateboard of the car, have a certain strength under collision conditions and fully absorb energy and disperse the impact force is a technical point that technicians need to continuously improve and enhance, and further research to improve the safety of the car under collision is particularly necessary. Summary of the invention

[0003] The purpose of the present invention is to provide a skateboard chassis energy absorption structure with reasonable design and good energy absorption effect, which effectively improves the safety of new energy vehicles under collision conditions.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides a skateboard chassis energy absorption structure, including: a vehicle body frame, a battery box shell connecting assembly, and a beam structure. The battery box shell connecting assembly and the beam structure are respectively mechanically connected to the vehicle body frame to achieve force buffering of the beam structure. The battery box shell connecting assembly includes a buffer block, and the beam structure includes a connecting rod. The relative positions of the connecting rod and the buffer block are used to achieve contact and compression of the buffer block by the connecting rod after the beam structure is hit to protect the battery box shell connecting assembly.

[0005] Preferably, the buffer block is made of foamed aluminum.

[0006] Furthermore, the buffer block is provided with a buffer surface, and a horizontal cross-sectional edge curve of the buffer surface is one of a wave shape and a sawtooth shape.

[0007] Furthermore, the connecting rod is made of one of steel and aluminum alloy.

[0008] Furthermore, the beam structure also includes at least two connecting components that are symmetrically arranged on the left and right, and the connecting components are provided with connecting bolts; the vehicle body frame includes at least two mounting seats that are symmetrically arranged on the left and right, and the mounting seats are provided with guide grooves; the connecting components are mechanically connected to the mounting seats through the connecting bolts passing through the guide grooves to achieve installation, fixation and buffering of the beam structure.

[0009] Furthermore, the guide groove has a shape of an ellipse or a rectangle, and is used to guide the connecting bolt to move after being subjected to force in the horizontal direction in the guide groove.

[0010] Furthermore, the two left and right guide grooves are distributed in an inward or outward eight-shaped shape.

[0011] The invention relates to a skateboard chassis energy absorption structure, and has the following beneficial effects: the skateboard chassis energy absorption structure provided by the invention has reasonable design and simple structure, and improves the buffering and energy absorption effects after a car collision by utilizing the structural design and material selection of a buffer block in a battery box shell connecting assembly, and has a good energy absorption and buffering effect after a new energy car battery box is hit; a good guiding effect on a frontal impact force is achieved by utilizing the structure and shape design of a guide groove, and the frontal impact force is dispersed; the skateboard chassis energy absorption structure provided by the invention has good safety, reduces the probability of injury to components and personnel on the vehicle, and has a good energy absorption and anti-collision effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0013] Figure 1 A three-dimensional structural diagram of the energy-absorbing structure of the skateboard chassis provided by an embodiment of the present invention;

[0014] Figure 2 A three-dimensional structural diagram of a battery box housing connection assembly provided by an embodiment of the present invention;

[0015] Figure 3 A three-dimensional structural diagram of a beam structure provided by an embodiment of the present invention;

[0016] Figure 4 A three-dimensional structural diagram of a vehicle body frame provided by an embodiment of the present invention;

[0017] Figure 5 A three-dimensional structural diagram of the energy-absorbing structure of the skateboard chassis provided by an embodiment of the present invention;

[0018] Figure 6 for Figure 5 A partial enlarged view of part A;

[0019] Figure 7 A three-dimensional structural diagram of a connecting rod provided in an embodiment of the present invention;

[0020] Figure 8 A three-dimensional structural diagram of a buffer block provided in an embodiment of the present invention;

[0021] Fig. 9 A top view of a mounting base provided in an embodiment of the present invention.

[0022] In the figure:

[0023] 1. Vehicle frame; 11. Mounting seat; 111. Guide groove; 2. Battery box housing connection assembly; 21. Buffer block; 211. Buffer surface; 3. Beam structure; 31. Connecting rod; 32. Connecting assembly; 321. Connecting bolt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The "upper", "lower", "left", "right", "front", "back" positions of the objects described in the embodiments in the figures are only used to indicate relative positional relationships. When the absolute positions of the objects described in the embodiments are changed, the relative positional relationships may also change accordingly.

[0026] A skateboard chassis energy absorption structure according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0027] Figure 1 A three-dimensional structural diagram of the energy-absorbing structure of the skateboard chassis provided by an embodiment of the present invention is shown; Figure 2 A three-dimensional structural diagram of a battery box housing connection assembly provided by an embodiment of the present invention is shown; Figure 3 A three-dimensional structural diagram of a beam structure provided by an embodiment of the present invention is shown; Figure 4 A three-dimensional structural diagram of a vehicle body frame provided by an embodiment of the present invention is shown; Figure 5 A three-dimensional structural diagram of the energy-absorbing structure of a skateboard chassis provided by an embodiment of the present invention is shown; Figure 6 Shows Figure 5 A partial enlarged view of part A; Figure 7 A three-dimensional structural diagram of a connecting rod provided by an embodiment of the present invention is shown;

[0028] Figure 8 A three-dimensional structural diagram of a buffer block provided by an embodiment of the present invention is shown; Fig. 9 FIG. 2 shows a top view of a mounting base provided by an embodiment of the present invention. Figures 1 to 9 As shown, a skateboard chassis energy absorption structure provided by an embodiment of the present invention comprises: a vehicle frame 1, a battery box shell connecting assembly 2, and a beam structure 3, wherein the battery box shell connecting assembly 2 and the beam structure 3 are respectively mechanically connected to the vehicle frame 1 to achieve force buffering of the beam structure 3; it is worth noting that, for some automobile models, the beam structure 3 here may be a subframe; specifically, the beam structure 3 is located in front of the battery box shell connecting assembly 2, and the two are basically located in the same plane, wherein the battery box shell connecting assembly 2 comprises a buffer block 21, and the beam structure 3 comprises a connecting rod 31, and the positions of the connecting rod 31 and the buffer block 21 are relatively applied to achieve that after the beam structure 3 is impacted, the connecting rod 31 is used to form contact and compression with the buffer block 21 to protect the battery box shell connecting assembly 2 and reduce the impact damage to the battery inside the battery box; specifically, under normal circumstances, the connecting rod 31 of the beam structure 3 and the battery box shell connecting assembly 2 are close to each other. The buffer block 21 on the connecting assembly 2 is generally not in contact. When the car collides, if the beam structure 3 is squeezed, it will move backward, and the connecting rod 31 of the beam structure 3 will contact and squeeze the buffer block 21 on the battery box shell connecting assembly 2, so that the buffer block 21 will be deformed, so that it can absorb the energy of the impact, reduce the damage to the battery box shell connecting assembly 2 and the rear body parts, reduce the degree of damage to the vehicle, and thus reduce the probability of injury to the occupants of the vehicle. The battery box shell connecting assembly 2 here is arranged on the outside of the shell of the battery box of the new energy vehicle, and is mainly used to mechanically connect the battery box to the body frame 1; for new energy vehicles, the battery box shell connecting assembly 2 is generally arranged in the middle part of the rear body frame 1, and a number of batteries are installed inside the battery box shell. The buffer block 21 is used to greatly buffer the impact on the battery box shell connecting assembly 2, reducing the risk of spontaneous combustion of the internal batteries.

[0029] It is worth noting that the material of the buffer block 21 provided in the embodiment of the present invention is foamed aluminum, which mainly utilizes the characteristics of foamed aluminum such as low density, high impact absorption ability and easy processing. There are a large number of pores inside the foamed aluminum, which makes it have the advantages of light weight and high specific strength, and at the same time has strong energy absorption and impact resistance. As another embodiment, the buffer block 21 can also be replaced by an aluminum profile with a cavity structure, which can also play a buffering and energy absorption role to a certain extent.

[0030] In the skateboard chassis energy absorption structure provided by the embodiment of the present invention, as a further improvement, the buffer block 21 is provided with a buffer surface 211, and the horizontal cross-sectional edge curve of the buffer surface 211 is one of a wavy shape and a sawtooth shape. Of course, the horizontal cross-sectional edge curve of the buffer surface 211 can also be a triangular waveform, a rectangular waveform, a trapezoidal waveform, etc., including but not limited to the above shapes. The buffer surface 211 can achieve a step-by-step change in the strength of the buffer block 21 from front to back by utilizing the above shape, so that the strength at different positions on the buffer block 21 is different. When the car is hit from the front, causing the beam structure 3 to move backward and squeeze the buffer block 21, the strength of the buffer block 21 from front to back gradually increases, and the energy absorption effect is good, which is conducive to coping with different impact forces and producing different deformation effects to minimize the degree of damage to the car after the collision.

[0031] In the skateboard chassis energy absorption structure provided in the embodiment of the present invention, as a further improvement, the connecting rod 31 is a hollow structure, and the material of the connecting rod 31 is one of steel and aluminum alloy; of course, if the connecting rod 31 is a solid structure, it is also possible, but the weight will increase accordingly and the energy absorption effect will be weakened accordingly; the hollow structure of the connecting rod 31 in this embodiment reduces its own weight, and the use of steel material or aluminum alloy material ensures the strength of the connecting rod 31, so that in the event of a collision, the connecting rod 31 is not easy to deform when squeezing the buffer block 21, thereby reducing the number of damaged parts at the rear, reducing the degree of damage, and ensuring the safety of the cab occupants.

[0032] In the skateboard chassis energy absorption structure provided by the embodiment of the present invention, the beam structure 3 also includes at least two connecting components 32 that are symmetrically arranged on the left and right, and the connecting components 32 are provided with connecting bolts 321; the vehicle body frame 1 includes at least two mounting seats 11 that are symmetrically arranged on the left and right, and the mounting seats 11 here are sheet metal structures, and the mounting seats 11 are provided with guide grooves 111; the connecting components 32 are mechanically connected to the mounting seats 11 through the connecting bolts 321 that pass through the guide grooves 111 to achieve installation, fixation and force buffering of the beam structure 3.

[0033] As a further improvement of the embodiment of the present invention, the shape of the guide groove 111 is one of an ellipse and a rectangle, which is used to guide the connecting bolt 321 to move after being subjected to force in the horizontal direction in the guide groove 111. When the beam structure 3 is hit, the connecting bolt 321 in the connecting assembly 32 thereon moves along the guide groove 111. It is worth noting that the shape of the guide groove 111 can also be other shapes such as: oval, etc., or a combination of two or more of the above shapes can be adopted, including but not limited to the above shapes, as long as the connecting bolt 321 can be installed and fixed in the guide groove 111 and can produce a displacement in a specific direction after being hit. That is; preferably, the left and right guide grooves 111 are distributed in an inner or outer eight-shaped shape; in this way, when the beam structure 3 is hit, the beam structure 3 together with the connecting bolts 321 on the connecting assembly 32 can move along the guide groove 111, which plays a good guiding role in the direction of the impact force, and can decompose the frontal impact force into a component force in the side direction, effectively reducing the frontal impact force, so that the impact force is transmitted to the rear longitudinal beam position of the vehicle body frame 1 along the direction of the guide groove 111, and the strong strength and rigidity of the rear longitudinal beam of the vehicle body frame 1 are used to reduce the impact damage, thereby reducing the degree of damage to the front of the car, to ensure the safety of the people on the car, and improve safety.

[0034] Compared with the prior art, the skateboard chassis energy absorption structure provided by the present invention has a reasonable design and a simple structure. The structural design and material selection of the buffer block 21 in the battery box shell connecting assembly 2 are used to improve the buffering and energy absorption effects after a car collision, and the energy absorption and buffering effect after a new energy car battery box is hit is good; the structure and shape design of the guide groove 111 is used to achieve a good guiding effect on the frontal impact force and disperse the frontal impact force; the skateboard chassis energy absorption structure provided by the present invention has good safety, reduces the probability of injury to components and personnel on the vehicle, and has a good energy absorption and anti-collision effect.

[0035] There are a few points to note:

[0036] (1) Unless otherwise defined, in the embodiments of the present invention and the accompanying drawings, the same reference numerals represent the same meanings.

[0037] (2) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the general design.

[0038] (3) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, some structures in the drawings may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0039] (4) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0040] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A skateboard chassis energy absorption structure, characterized in that: include: A vehicle body frame (1), a battery box shell connection assembly (2), and a beam structure (3); the battery box shell connection assembly (2) and the beam structure (3) are respectively mechanically connected to the vehicle body frame (1) to achieve force buffering of the beam structure (3); the battery box shell connection assembly (2) comprises a buffer block (21); the beam structure (3) comprises a connecting rod (31); the positions of the connecting rod (31) and the buffer block (21) are relative to each other to achieve contact and compression of the buffer block (21) by the connecting rod (31) after the beam structure (3) is impacted, so as to protect the battery box shell connection assembly (2).

2. The skateboard chassis energy absorption structure according to claim 1, characterized in that: The buffer block (21) is made of foamed aluminum.

3. The skateboard chassis energy absorption structure according to claim 2, characterized in that: The buffer block (21) is provided with a buffer surface (211), and a horizontal cross-sectional edge curve of the buffer surface (211) is one of a wave shape and a sawtooth shape.

4. The skateboard chassis energy absorption structure according to claim 1, characterized in that: The connecting rod (31) is made of one of steel and aluminum alloy.

5. The skateboard chassis energy absorption structure according to any one of claims 1 to 4, characterized in that: The beam structure (3) further comprises at least two connecting assemblies (32) which are symmetrically arranged on the left and right, and the connecting assemblies (32) are provided with connecting bolts (321); the vehicle body frame (1) comprises at least two mounting seats (11) which are symmetrically arranged on the left and right, and the mounting seats (11) are provided with guide grooves (111); the connecting assemblies (32) are mechanically connected to the mounting seats (11) by the connecting bolts (321) passing through the guide grooves (111) to achieve installation, fixation and buffering of the beam structure (3).

6. The skateboard chassis energy absorption structure according to claim 5, characterized in that: The guide groove (111) is in the shape of an ellipse or a rectangle and is used to guide the connecting bolt (321) to move after being subjected to force in the horizontal direction in the guide groove (111).

7. The skateboard chassis energy absorption structure according to claim 6, characterized in that: The two left and right guide grooves (111) are distributed in an inward or outward eight-shaped shape.

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