Vehicle front end collision protection device and vehicle

Abstract

The invention relates to a vehicle front end collision protection device and a vehicle, and belongs to the field of vehicle body components, the vehicle front end collision protection device is used for providing protection for a collided object when the front end of the vehicle is collided, the vehicle front end collision protection device comprises a collision protection part and a connecting piece, and the collision protection part comprises an energy absorption part and a limiting part; the energy absorption part is located on the front vertical face of the front bumper lower supporting piece and used for providing supporting and absorbing energy during impact, the limiting part is located on the bottom face of the front bumper lower supporting piece and used for limiting the angle between the connecting piece and the air inlet grille supporting piece, and the connecting piece is used for fixing the air inlet grille supporting piece to the front bumper lower supporting piece. For a saloon car of which the modeling surface of the front end is relatively low in pressure, the design considers the support of the front bumper lower support in the whole leg impact area and the connection failure caused by the folding of the lower end of the air-inlet grille support piece, and a new design mode is provided.

Description

Technical Field

[0001] The invention belongs to the field of automobile body components, and in particular relates to a vehicle front end impact protection device and a vehicle. Background Art

[0002] For cars with low front bumper and hood pressure, the front support structure of the front bumper and hood cannot completely cover the center of gravity of the human body. Under the action of inertia, the upper and lower legs will bend excessively, leading to fractures and ligament strain. In order to facilitate the installation of necessary parts, such as the installation of active grille layout, the lower support of the car is generally designed in sections along the longitudinal direction of the vehicle. Due to the weak connection strength between the sections, when the lower leg collides with the lower support area of ​​the front bumper, the lower support is easy to bend and cannot provide stable support, resulting in excessive bending of the lower leg and ligament strain.

[0003] Therefore, it is necessary to design an impact protection device that provides stronger support in the support area under the front bumper of a car and prevents the support structure from rotating relative to the connecting structure, so as to reduce excessive bending of the calf and reduce the risk of ligament strain. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a vehicle front end impact protection device which can provide stronger support for the lower support area of ​​the front bumper of a car and prevent the support structure from rotating relative to the connecting structure, and a vehicle having the device.

[0005] The present invention provides a vehicle front-end impact protection device, which is used to provide protection for an impacted object when a collision occurs at the front end of the vehicle. The device comprises an impact protection part and a connecting piece. The impact protection part comprises an energy absorbing part and a limiting part. The energy absorbing part is located on the front vertical surface of a front bumper lower support part, and is used to provide support and absorb energy during a collision. The limiting part is located on the bottom surface of the front bumper lower support part, and is used to limit the angle between the connecting piece and the air intake grille support part. The connecting piece is used to fix the air intake grille support part on the front bumper lower support part.

[0006] Optionally, the impact protection portion further includes a crushing structure for concentrating stress and breaking or shattering first when impacted.

[0007] Optionally, the energy absorbing part includes a first energy absorbing member and a second energy absorbing member, there are plural first energy absorbing members and second energy absorbing members, and both are arranged along the vehicle width direction, and the second energy absorbing member is arranged between two adjacent first energy absorbing members.

[0008] Optionally, the crush structure is arranged on the first energy absorbing member.

[0009] Optionally, the first energy absorbing member and the second energy absorbing member are in the shape of long strips with one end closed and the other end open, the crushing structure is arranged at the closed end of the first energy absorbing member and also at the closed end of the second energy absorbing member, and the bottom surface of the open end of each first energy absorbing member extends backward to form a limiting portion.

[0010] Optionally, along the vehicle width direction, the second energy absorbing parts and the limiting portions are alternately distributed.

[0011] Optionally, the vehicle front end impact protection device further includes an air intake grille, and the impact protection portion, the air intake grille support and the air intake grille are arranged from bottom to top along the vehicle body height direction.

[0012] Optionally, a reinforcement piece is provided in the limiting portion.

[0013] The present invention also provides a vehicle, comprising the vehicle front-end impact protection device as described in any one of the above-mentioned embodiments of the present invention.

[0014] Optionally, the vehicle includes a front bumper support member, and the vehicle front end impact protection device is connected to the front bumper support member via a connecting member.

[0015] With the above technical solution, when a collision occurs, the energy-absorbing part acting on the front elevation of the front bumper lower support absorbs energy and provides support for the front bumper lower support, so that the front bumper lower support is not easily deformed. While dissipating the impact energy in the calf area to reduce the risk of tibial fracture and ligament strain, it also protects the vehicle body structure. The limiting part acting on the bottom surface of the front bumper lower support limits the angle between the connecting part and the air intake grille support, preventing the air intake grille support from rotating counterclockwise around the connecting part during a collision, thereby causing the connection between the air intake grille support and the connecting part to fail. In addition, in the vehicle width direction, the energy-absorbing part and the limiting part are alternately arranged to maximize the energy-absorbing structure cavity in the vehicle width direction, which can ensure the support stability and improve the energy absorption efficiency per unit collapse distance. The vehicle front impact protection device is connected to the front bumper lower support in sections, and the air intake grille is arranged and installed for cars with compact front cabin Z-direction dimensions. A new design method is provided for cars with compact front cabin Z-direction dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a vehicle front end impact protection device provided by an embodiment of the present application as viewed from the rear of the vehicle; Figure 2 A main schematic diagram of a vehicle front-end impact protection device provided by an embodiment of the present application as viewed from the front of the vehicle; Figure 3 A partially enlarged schematic diagram of the impact protection portion provided by an embodiment of the present application as viewed from the front of the vehicle; Figure 4 A partially enlarged schematic diagram of the impact protection portion provided by the embodiment of the present application observed from the rear of the vehicle; Figure 5 A schematic diagram showing the distribution of the energy absorbing portion, the limiting portion and the crushing portion of the impact protection portion in the vehicle front impact protection device provided in an embodiment of the present application on the cross section formed by the vehicle body length and the vehicle body height direction; Figure 6 A schematic diagram of the distribution of the energy absorbing portion and the limiting portion of the impact protection portion in the vehicle front impact protection device provided by an embodiment of the present application on the cross section formed by the vehicle width and vehicle height directions; Figure 7 A schematic diagram of the overall effect of the vehicle front-end impact protection device after installation provided in an embodiment of the present application.

[0018] The meanings of the reference numerals in the figure are as follows: 10 - impact protection part, 20 - connecting part, 30 - air intake grille support part, 40 - air intake grille, 50 - air intake grille reinforcement part, 60 - front bumper assembly mounting part, 70 - license plate support part, 11 - energy absorbing part, 11a - first energy absorbing part, 11b - second energy absorbing part, 12 - limiting part, 13 - crushing structure, 14 - reinforcement part. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description 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.

[0020] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] The terms "first", "second", "third", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0023] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0024] Figure 1 This is a schematic diagram of a vehicle front-end impact protection device provided by an embodiment of the present application as viewed from the rear of the vehicle. Figure 2 This is a main schematic diagram of the vehicle front-end impact protection device provided by an embodiment of the present application as viewed from the front of the vehicle. Figure 3 It is a partially enlarged schematic diagram of the impact protection portion provided by the embodiment of the present application observed from the front of the vehicle. Figure 4 It is a partially enlarged schematic diagram of the impact protection portion provided by the embodiment of the present application observed from the rear of the vehicle. Figure 5 A schematic diagram of the distribution of the energy absorbing portion and the limiting portion of the impact protection portion in the vehicle front impact protection device provided in an embodiment of the present application on the cross section formed by the vehicle width and vehicle height directions.

[0025] like Figure 1-5 The vehicle front end impact protection device provided in the embodiment of the present invention comprises an impact protection part (10), a connecting part (20), an air intake grille support part (30), an air intake grille (40), an air intake grille reinforcement part (50), a front bumper assembly mounting part (60) and a license plate support part (70). The impact protection part (10), the air intake grille support part (30) and the air intake grille (40) are arranged from bottom to top along the height direction of the vehicle body, the air intake grille reinforcement part (50) is embedded near the middle and the left and right sides of the active grille, the front bumper assembly mounting part (60) is arranged on the air intake grille reinforcement part (50) and is used to install the air intake grille (40) on the front bumper assembly, and the license plate support part (70) is arranged on the air intake grille (40). The various structures can be assembled and installed or can be selected to be integrally injection molded. In this embodiment, the various structures are preferably connected in an integral molding manner. The impact protection part (10) comprises an energy absorbing part (11), a limiting part (12) and a crushing structure (13). The energy absorbing part (11) is located on the front elevation of the front lower support member. Specifically, the energy absorbing part (11) comprises a first energy absorbing member (11a) and a second energy absorbing member (11b). The number of the first energy absorbing member (11a) and the second energy absorbing member (11b) are both multiple and are arranged along the vehicle width direction. The second energy absorbing member (11b) is arranged between two adjacent first energy absorbing members (11a). The first energy absorbing member (11a) and the second energy absorbing member (11b) are both in the shape of a long strip with one end closed and the other end open.

[0026] The top surfaces of the first energy absorbing member (11a) and the second energy absorbing member (11b) are connected to the air intake grille support member (30), and the bottom surface of the first energy absorbing member (11a) and the two side surfaces perpendicular to the air intake grille support member (30) extend backward through the lower end of the air intake grille support member (30). The bottom surface of the second energy absorbing member (11b) extends backward through the lower end of the air intake grille support member (30) to the same position as the two vertical extension surfaces of the first energy absorbing member (11a), and is directly connected to the front guard lower support member, located on the front vertical surface of the front guard lower support member, and provides support for the front guard lower support member during an impact. The bottom surface of the first energy absorbing member (11a) continues to extend backward at the position where the two side surfaces end to form a limiting portion (12). The limiting portion (12) is located on the bottom surface of the front guard lower support member, and is used to limit the angle between the connecting member (20) and the air intake grille support member (30). A reinforcing member (14) is arranged in the limiting portion (12).

[0027] The crushing structure (13) is arranged on the first energy absorbing member (11a) and the second energy absorbing member (11b), and is located at the closed ends of the two members, and is used to concentrate stress and break or shatter first when impacted. The design of the crushing portion reduces the impact force borne by the energy absorbing member (11), thereby reducing the probability of failure of the connecting member (20).

[0028] The connecting member (20) is arranged on the air intake grille support member (30) and is used to fix the air intake grille support member (30) to the front bumper support member. The connecting member (20) is specifically a columnar structure with a threaded hole inside, and can be connected to the air intake grille support member (30) by welding or integral molding. In this embodiment, an integral connection is preferred. When an impact occurs, the lower end of the air intake grille support member (30) tends to rotate counterclockwise around the connecting member (20). The added limiting portion (12) increases the overlap area with the front bumper support member, preventing the lower end of the air intake grille support member (30) from flipping over, reducing the risk of failure of the connecting member (20), and ensuring that the energy absorbing portion (11) stably deforms and absorbs energy. Furthermore, the residual impact force is finally transmitted to the vehicle body through the front bumper support member.

[0029] Figure 6A schematic diagram of the distribution of an energy absorbing portion (11) and a limiting portion (12) of an impact protection portion in a vehicle front impact protection device provided in an embodiment of the present application, on a cross section formed in the vehicle width and vehicle height directions.

[0030] like Figure 6 As shown, the first energy absorbing member (11a) and the second energy absorbing member (11b) are arranged alternately, the bottom surface of the first energy absorbing member (11a) extends backward in the vehicle length direction to form a limiting portion (12), and in the vehicle width direction, the second energy absorbing member (11b) and the limiting portion (12) are arranged alternately, and the energy absorbing portion (11) and the limiting portion (12) formed by the first energy absorbing member (11a) and the second energy absorbing member (11b) in the cross section formed in the vehicle width and vehicle height directions are also arranged alternately. Taking the a-PLI leg-shaped impact Y0 position as an example, when the leg-shaped impact is at the front end of the vehicle, the energy absorbing portion (11) cavity can be maximized in the vehicle width direction through the arrangement form of "energy absorbing portion (11) + limiting portion (12) + energy absorbing portion (11)", which can ensure the support stability and improve the energy absorption efficiency of the energy absorbing portion (11) per unit collapse distance, and can more effectively prevent the lower end of the air intake grille support member (30) from turning downward.

[0031] Figure 7 A schematic diagram of the overall effect of a pedestrian impact on the vehicle front impact protection device provided in an embodiment of the present application.

[0032] like Figure 7 As shown, when the front end of the vehicle collides with the leg of the pedestrian, in the order of occurrence, the lower area of ​​the calf module first collides with the crushed part (13) at the lower end of the front bumper, the crushed part (13) collapses to absorb energy, and the excess impact force is transmitted to the energy absorbing part (11), the energy absorbing part (11) absorbs part of the energy, and the remaining impact force is transmitted to the vehicle body. At this time, the upper end of the calf rotates backward around the impact position, and the knee area is squeezed with the foam energy absorbing structure at the rear end of the front bumper upper body. Finally, under the inertia of the upper body module, the thigh module collides with the upper trim area of ​​the front bumper, and dissipates through the energy gradient. The actual energy of the thigh module colliding with the upper end of the vehicle is relatively much smaller, and the risk of femur fracture is relatively small.

[0033] Another embodiment of the present invention further provides a vehicle, comprising the vehicle front end impact protection device involved in the present invention and a front bumper lower support member, wherein the vehicle front end impact protection device is connected to the front bumper lower support member via a connecting member (20).

[0034] It can be seen from the above embodiments that when a collision occurs, the air intake grille support (30) and the front bumper lower support are the main load-bearing components, and the energy absorbing portion (11) acting on the front vertical surface of the front bumper lower support absorbs energy and provides support for the front bumper lower support, so that the front bumper lower support is not easily deformed, and the impact energy in the calf area is dissipated to reduce the risk of tibial fracture and ligament strain while protecting the vehicle body structure. When the lower end of the air intake grille support (30) is subjected to force and has a tendency to rotate, the limiting portion (12) acting on the bottom surface of the front bumper lower support limits the angle between the connecting member (20) and the air intake grille support (30), thereby preventing the connection between the air intake grille support (30) and the connecting member (20) from failing. In addition, in the vehicle width direction, the energy absorbing portion (11) and the limiting portion (12) are alternately arranged in a mode that maximizes the energy absorbing structure cavity in the vehicle width direction, which can ensure support stability and improve energy absorption efficiency per unit collapse distance. The front-end collision protection device of the vehicle is connected to the front lower protection support member in a segmented manner, and for a car with a compact front cabin Z-direction dimension, the air intake grille (40) is arranged and installed. A new design method is provided for a car with a relatively compact front cabin Z-direction dimension. In addition, the connecting member (20) and the energy absorbing part (11) and the limiting part (12) are arranged separately, and the cross-sectional dimension of the support structure is increased upward in the vehicle height direction, thereby improving the support stability.

[0035] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A vehicle front end collision protection device, used to provide protection for an object being hit when a collision occurs at the front end of the vehicle, characterized in that: The invention comprises an impact protection part (10) and a connecting member (20), wherein the impact protection part (10) comprises an energy absorbing part (11) and a limiting part (12), wherein the energy absorbing part (11) is located on the front vertical surface of the front bumper lower support member and is used to provide support and absorb energy during an impact, and the limiting part (12) is located on the bottom surface of the front bumper lower support member and is used to limit the angle between the connecting member (20) and the air intake grille support member (30), and the connecting member (20) is used to fix the air intake grille support member (30) on the front bumper lower support member.

2. The vehicle front end impact protection device according to claim 1, characterized in that: The impact protection portion (10) further comprises a crushing structure (13) for concentrating stress and breaking or shattering first when impacted.

3. The vehicle front end impact protection device according to claim 2, characterized in that: The energy absorbing part (11) comprises a first energy absorbing member (11a) and a second energy absorbing member (11b); the first energy absorbing member (11a) and the second energy absorbing member (11b) are both multiple in number and are arranged along the vehicle width direction; the second energy absorbing member (11b) is arranged between two adjacent first energy absorbing members (11a).

4. The vehicle front end impact protection device according to claim 3, characterized in that: The crushing structure (13) is arranged on the first energy absorbing member (11a).

5. The vehicle front end impact protection device according to claim 4, characterized in that: The first energy absorbing member (11a) and the second energy absorbing member (11b) are in the shape of a long strip with one end closed and the other end open; the crushing structure (13) is arranged at the closed end of the first energy absorbing member (11a) and is also arranged at the closed end of the second energy absorbing member (11b); the bottom surface of the open end of each first energy absorbing member (11a) extends backward to form the limiting portion (12).

6. The vehicle front end impact protection device according to claim 5, characterized in that: Along the vehicle width direction, the second energy absorbing member (11b) and the limiting portion (12) are distributed alternately.

7. The vehicle front end impact protection device according to claim 1, characterized in that: The vehicle front end impact protection device further comprises an air intake grille (40), wherein the impact protection portion (10), the air intake grille support member (30) and the air intake grille (40) are arranged from bottom to top along the height direction of the vehicle body.

8. The vehicle front end impact protection device according to claim 1, characterized in that: Said A reinforcing member (14) is arranged inside the limiting portion (12).

9. A vehicle, characterized in that: The invention comprises a vehicle front end impact protection device as described in any one of claims 1 to 8.

10. The vehicle according to claim 1, characterized in that The vehicle comprises a front bumper lower support component, and the vehicle front end impact protection device is connected to the front bumper lower support component via the connecting component (20).

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