A pressure-resistant automotive plastic part

Abstract

This utility model discloses an automotive plastic part with pressure resistance, belonging to the technical field of automotive plastic parts. The device includes a bumper plate disposed on the front side of a crash beam. A gap exists between the crash beam and the bumper plate to facilitate deformation buffering of the bumper plate. An elastic buffer assembly is disposed between the bumper plate and the crash beam, providing elastic support for the gap between the bumper plate and the crash beam. In use, by placing an elastic buffer assembly between the bumper plate and the crash beam, whether it is an angled buffer plate, a V-shaped buffer plate, or an elastic filling material, this utility model can effectively absorb impact force during a collision. When the bumper plate is compressed, the buffer assembly deforms due to its elasticity, preventing direct hard contact between the bumper plate and the crash beam, reducing damage to pedestrians and the bumper plate itself from hard impacts. Simultaneously, after the angled buffer plate recovers its deformed state, it can also push the bumper plate back to its original position, improving the bumper plate's toughness.

Description

Technical Field

[0001] This utility model relates to the field of automotive plastic parts technology, and in particular to an automotive plastic part with pressure resistance. Background Technology

[0002] Automotive plastic parts refer to various plastic components used in automobile manufacturing. They are made from engineering plastics or modified plastics and formed through processes such as injection molding, extrusion, and blow molding.

[0003] In automotive exterior design, considering the different impact probabilities of various components, critical areas such as the rear of the bumper typically incorporate built-in anti-collision support structures, such as high-strength anti-collision beams. When plastic parts like bumpers are involved in a collision, their material properties allow for controlled deformation. The deformed plastic parts rely on the metal or composite material support structures such as the rear anti-collision beams to maintain overall contour stability, ensuring that the installation accuracy of core components such as doors and hoods is not affected.

[0004] The shortcomings of the existing technical solutions are as follows: the function of the anti-collision support structure is to ensure the integrity of the passenger compartment in a high-speed collision, and its material is hard and its energy absorption method is intense. However, the plastic parts of the car have poor buffering effect when colliding with pedestrians, making the anti-collision support structure very easy to cause serious injury during a collision; in the event of a scrape, the great rigidity can easily cause the plastic shell to break easily, or even cause slight deformation itself, thereby increasing repair costs. Utility Model Content

[0005] This invention provides an automotive plastic part with pressure resistance, which can solve the problems of poor cushioning effect and easy breakage and deformation of existing automotive plastic parts.

[0006] A pressure-resistant automotive plastic part includes a bumper plate disposed on the front side of a crash beam, with a gap between the crash beam and the bumper plate to facilitate deformation buffering of the bumper plate, and a buffer assembly with elastic properties disposed between the bumper plate and the crash beam, the buffer assembly being used to elastically support the gap between the bumper plate and the crash beam.

[0007] The beneficial effects of this utility model are as follows: The buffer assembly includes multiple sets of inclined buffer plates that are equidistantly arranged on the inner side of the lever plate. The inclined buffer plates can absorb the compressive force transmitted by the lever plate, and after the inclined buffer plates are deformed and restored, they can push the lever plate to reset.

[0008] The beneficial effects of this utility model are that each set of inclined buffer plates is inclined upward.

[0009] The beneficial effects of this utility model are: the buffer component includes an elastic filling material.

[0010] The beneficial effects of this utility model are as follows: the buffer assembly includes multiple sets of V-shaped buffer plates arranged on the rear side of the lever plate.

[0011] The beneficial effects of this utility model are as follows: a pad parallel to the anti-collision beam is provided on the rear side of the lever plate, and the buffer assembly is located between the pad and the anti-collision beam.

[0012] The beneficial effects of this utility model are as follows: Each set of V-shaped buffer plates consists of two sets of V-shaped support plates. The V-shaped opening of each set of V-shaped buffer plates faces the anti-collision beam. The ends of the two sets of support plates on the adjacent side of two sets of V-shaped buffer plates are close to each other but do not contact each other.

[0013] The beneficial effect of this utility model is that the thickness of the pad is greater than the thickness of the lever plate.

[0014] The beneficial effects of this utility model are as follows: the elastic filling material includes EPP foamed polypropylene.

[0015] The beneficial effects of this utility model are that both the pad and the lever are made of plastic.

[0016] 1. In use, this utility model utilizes an elastic buffer component between the bumper and the anti-collision beam. Whether it's an angled buffer plate, a V-shaped buffer plate, or an elastic filling material, it can effectively absorb impact force upon impact. When the bumper is compressed, the buffer component deforms due to its elasticity, preventing direct hard contact between the bumper and the anti-collision beam, thus reducing damage to pedestrians and the bumper itself from hard impacts. Simultaneously, the angled buffer plate, after deforming and recovering, can push the bumper back to its original position, improving the bumper's toughness.

[0017] 2. In use, the lever plate, when compressed, causes the V-shaped buffer plate to press against the pad. At this time, the two support plates of the V-shaped buffer plate slide to both sides, achieving the first level of buffering. If the pressure continues to increase, the support plates of adjacent V-shaped buffer plates abut against each other, and multiple sets of adjacent V-shaped buffer plates in the compressed area form a stable triangular structure to jointly press against the pad, forming the second level of buffering. This continues until the pad deforms and contacts the anti-collision beam, completing the multi-stage buffering. This multi-stage buffering design can gradually absorb and disperse the impact force, effectively protecting the lever plate. Attached Figure Description

[0018] Figure 1 A schematic diagram of an inclined buffer plate structure for automotive plastic parts with pressure resistance provided by this utility model; Figure 2 A schematic diagram of a pressure-resistant automotive plastic part pad structure provided by this utility model; Figure 3 A schematic diagram of an elastic filler material for automotive plastic parts with pressure resistance provided by this utility model; Figure 4A schematic diagram of a V-shaped buffer plate structure for automotive plastic parts with pressure resistance provided by this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Barrel plate; 2. Anti-collision beam; 3. Buffer assembly; 301. Angled buffer plate; 302. Elastic filling material; 303. V-shaped buffer plate; 4. Pad plate. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0021] like Figures 1 to 4 As shown in the figure, this utility model provides a pressure-resistant automotive plastic part, including a bumper plate 1 disposed on the front side of a crash beam 2. A gap is provided between the crash beam 2 and the bumper plate 1 to facilitate the deformation and buffering of the bumper plate 1, ensuring that the bumper plate 1 has a certain deformation space when subjected to impact, thereby effectively absorbing the impact force. A buffer component 3 with elastic properties is also provided between the bumper plate 1 and the crash beam 2. The main function of the buffer component 3 is to elastically support the gap between the bumper plate 1 and the crash beam 2, thereby absorbing the impact force during impact and reducing the damage caused by hard impact to pedestrians and the bumper plate 1 itself.

[0022] In one specific embodiment, the buffer assembly 3 employs multiple sets of equidistant, inclined buffer plates 301 arranged at an angle on the inner side of the lever plate 1. For example... Figure 1 As shown, these inclined buffer plates 301 can absorb the compressive force transmitted by the bumper 1, so that the ends of the inclined buffer plates 301 are tightly pressed against the anti-collision beam 2. Since the inclined buffer plates 301 themselves have a certain degree of elasticity, they can provide support and cushioning through elastic deformation, effectively preventing the bumper 1 from making direct hard contact with the anti-collision beam 2. Furthermore, after the inclined buffer plates 301 recover their deformation, they can also push the bumper 1 back to its original position, thereby improving the toughness of the bumper 1. Further, each set of inclined buffer plates 301 is inclined upwards, so that when the bumper 1 is impacted, the inclined buffer plate 301 at that location will deform and generate a downward guiding force, thereby preventing the bumper 1 from directly detaching from the vehicle body.

[0023] In a second specific embodiment, the buffer assembly 3 employs multiple sets of V-shaped buffer plates 303 disposed on the rear side of the lever plate 1. For example... Figure 4As shown, each set of V-shaped buffer plates 303 consists of two sets of V-shaped support plates, and the V-shaped openings of each set of V-shaped buffer plates 303 face the anti-collision beam 2. The ends of the two sets of support plates on the adjacent side of two sets of V-shaped buffer plates 303 are close to each other but do not touch, ensuring the buffering effect and avoiding direct collision between the support plates to form a stable triangular structure. Furthermore, a pad 4 parallel to the anti-collision beam 2 is provided on the rear side of the baffle plate 1. The buffer assembly 3 is located between the pad 4 and the anti-collision beam 2, and the thickness of the pad 4 is greater than the thickness of the baffle plate 1 to provide better support and buffering effect, ensuring that the baffle plate 1 can be fully protected when subjected to impact.

[0024] During use, when the baffle plate 1 is compressed, it will cause the V-shaped buffer plate 303 to press against the pad plate 4. At this time, the two support plates of each set of V-shaped buffer plates 303 slide to both sides until the support plates abut against the support plates on the adjacent V-shaped buffer plates 303. If the pressure continues to increase, multiple sets of adjacent V-shaped buffer plates 303 in the compressed area will form a stable triangular structure, jointly pressing against the pad plate 4. This continues until the pad plate 4 deforms and contacts the anti-collision beam 2, thereby achieving a graded buffering effect, effectively absorbing and dispersing the impact force, and protecting the baffle plate 1.

[0025] As an alternative to this embodiment, the inclined buffer plate 301 can be used instead of the V-shaped buffer plate 303, such as... Figure 2 As shown. When the bumper 1 is compressed, it deforms, which in turn compresses the inclined buffer plate 301. After being compressed, the inclined buffer plate 301 further compresses the pad 4, causing it to deform. As the pressure continues to increase, the inclined buffer plate 301 continuously increases the force on the pad 4 until the pad 4 deforms and contacts the anti-collision beam 2. This also achieves an effective cushioning effect, protecting the bumper 1.

[0026] In a third embodiment, the buffer component 3 can also be an elastic filler material 302. This elastic filler material 302, such as EPP foamed polypropylene, has excellent elastic deformation capability, enabling it to deform and absorb energy upon impact, thereby providing a buffering effect. Alternatively, other layered structures capable of elastic deformation and buffering can also be used as the buffer component 3 to meet different design requirements and application scenarios.

[0027] Working principle:

[0028] In the first embodiment: when the lever 1 is subjected to an external impact force, the lever 1 deforms and moves towards the anti-collision beam 2, transmitting the compressive force to the inclined buffer plate 301. Because the inclined buffer plate 301 is inclined and has a certain degree of elasticity, it undergoes elastic deformation after being subjected to the compressive force transmitted by the lever 1. Its end presses tightly against the anti-collision beam 2, absorbing and dispersing part of the impact force through its own elastic deformation, effectively preventing the lever 1 from making direct hard contact with the anti-collision beam 2, reducing damage to pedestrians and the lever 1 itself. When the impact force disappears, the inclined buffer plate 301 returns to its original shape due to its elasticity, simultaneously pushing the lever 1 back to its original position, improving the toughness of the lever 1.

[0029] In the second embodiment: when the lever plate 1 is compressed, it deforms and transmits the force to the V-shaped buffer plate 303. At this time, the two support plates of each set of V-shaped buffer plates 303 slide to both sides. During this process, the V-shaped buffer plates 303 absorb part of the impact force through their own elastic deformation, achieving initial buffering. As the compression intensifies, the support plates continue to slide to both sides until they come into contact with the support plates on the adjacent V-shaped buffer plates 303. If the pressure continues to increase, the support plates of multiple sets of adjacent V-shaped buffer plates 303 in the compressed area cooperate to form a stable triangular structure. This stable triangular structure can jointly withstand and disperse a larger impact force, further compressing the pad 4 located behind the buffer assembly 3. The pad 4 deforms after being compressed until it contacts the anti-collision beam 2. Through this graded buffering method, the impact force is gradually absorbed and dispersed, providing sufficient protection for the lever plate 1.

[0030] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A pressure-resistant automotive plastic part, characterized in that, Includes a bar plate (1) set in front of the anti-collision beam (2), there is a gap between the anti-collision beam (2) and the bar plate (1) to facilitate the deformation buffer of the bar plate (1), and a buffer component (3) with elastic properties is provided between the bar plate (1) and the anti-collision beam (2), the buffer component (3) is used to elastically support the gap between the bar plate (1) and the anti-collision beam (2); The buffer assembly (3) includes multiple sets of V-shaped buffer plates (303) disposed on the rear side of the lever plate (1); Each set of V-shaped buffer plates (303) consists of two sets of V-shaped support plates. The V-shaped opening of each set of V-shaped buffer plates (303) faces the anti-collision beam (2). The ends of the two sets of support plates on the same side of two adjacent sets of V-shaped buffer plates (303) are close to each other but do not contact each other.

2. The automotive plastic part with pressure resistance as described in claim 1, characterized in that, The rear side of the lever plate (1) is provided with a pad plate (4) that is parallel to the anti-collision beam (2), and the buffer assembly (3) is located between the pad plate (4) and the anti-collision beam (2).

3. A pressure-resistant automotive plastic part as described in claim 2, characterized in that, The thickness of the pad (4) is greater than the thickness of the lever (1).

4. The automotive plastic part with pressure resistance as described in claim 3, characterized in that, Both the pad (4) and the lever (1) are made of plastic.

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