Bumper assembly and vehicle

Abstract

The invention relates to a bumper assembly and a vehicle. The bumper assembly comprises a bumper skin, a bumper framework and a skin reinforcing piece arranged between the bumper skin and the bumper framework, the bumper framework comprises a framework body and a first buffering part protruding out of the framework body in the direction away from the bumper skin, and the first buffering part is provided with a first cavity with an opening; the skin reinforcer comprises a reinforcer body and a second buffer part protruding out of the reinforcer body, the second buffer part at least partially extends into the first cavity through the opening and comprises an abutting part abutting against the inner wall of the first cavity and capable of moving relative to the inner wall, the second buffer part is provided with a second cavity, and the second cavity is provided with an opening. And a weakening hole is formed in the wall of the second cavity. According to the bumper assembly, the strength of the bumper can be weakened, energy generated during collision is effectively absorbed, the timely buffering effect is achieved, and therefore the safety performance of a vehicle is improved.

Description

Technical Field

[0001] The present invention generally relates to the field of vehicles, and more particularly to a bumper assembly and a vehicle comprising the bumper assembly. Background Art

[0002] The vehicle bumper is a safety device that absorbs and mitigates external impact and protects the front and rear parts of the vehicle. In a collision accident, the bumper can absorb the energy generated by the collision through deformation, reduce damage to parts inside the vehicle, and protect pedestrians at the same time.

[0003] Due to its high strength, the existing bumper is difficult to effectively absorb the collision energy through deformation in a collision accident, and thus cannot play an ideal buffering and protective role. Summary of the invention

[0004] The object of the present invention is to provide a bumper assembly for a vehicle, which can overcome at least one of the defects of the above-mentioned prior art. That is, the bumper assembly according to the present invention can weaken the strength of the bumper, effectively absorb the energy during the collision, play a timely buffering role, and thus improve the safety performance of the vehicle.

[0005] To this end, the first aspect of the present invention provides a bumper assembly, including a bumper skin; a bumper frame, the bumper frame supporting the bumper skin; and a skin reinforcement, the skin reinforcement being arranged between the bumper skin and the bumper frame, and the skin reinforcement being fixed to the bumper skin, the bumper frame including a frame body and a first buffer portion protruding from the frame body in a direction away from the bumper skin, the first buffer portion being provided with a first cavity including an opening, and the skin reinforcement including a reinforcement body and a second buffer portion protruding from the reinforcement body, the second buffer portion at least partially extending into the first cavity via the opening and including an abutment portion, the abutment portion abutting against an inner wall of the first cavity and being movable relative to the inner wall, wherein the second buffer portion is provided with a second cavity, the wall of the second cavity being provided with at least one weakened hole.

[0006] According to an optional embodiment of the present invention, at least one of the first cavity and the second cavity has a shape having a size that decreases in a direction away from the bumper skin.

[0007] According to an optional embodiment of the present invention, the first buffer portion includes a first energy absorbing portion and a first guide portion, wherein the first energy absorbing portion extends from the skeleton body and is provided with at least one weakened hole, and the first guide portion extends from the first energy absorbing portion in a direction away from the bumper surface and abuts against the abutment portion.

[0008] According to an optional embodiment of the present invention, the first guide portion includes an abutment boss, and the abutment boss is adjacent to the first energy absorbing portion and abuts against the abutment portion.

[0009] According to an optional embodiment of the present invention, the second buffer portion includes a second energy absorbing portion and a second guide portion, wherein the second energy absorbing portion extends from the reinforcement body and is provided with at least one weakened hole, and the second guide portion extends from the second energy absorbing portion in a direction away from the bumper surface and is suitable for at least partially extending into the first guide portion.

[0010] According to an optional embodiment of the present invention, the abutting portion includes at least one reinforcing rib disposed at the bottom of the second buffer portion.

[0011] A second aspect of the present invention provides a vehicle having a vertical direction indicating a direction perpendicular to the ground, the vehicle comprising an underbody structure and a bumper assembly according to the first aspect of the present invention supported by the underbody structure.

[0012] According to an optional embodiment of the present invention, the vehicle body bottom structure includes a support member, and the support member includes a support arm extending along the vertical direction and a support plate extending vertically from a top of the support arm and abutting against the first buffer portion.

[0013] Compared with the prior art, the bumper assembly according to the present invention has multiple advantages, especially: when the vehicle is hit, the second buffer part and the first buffer part are displaced and deformed, so that the impact energy is gradually attenuated during the transmission process, thereby improving the energy absorption efficiency of the bumper assembly and improving the safety performance of the vehicle. In addition, this buffer structure is simple in structure and easy to manufacture, and can be widely used in various types of bumper assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features and advantages of the present invention will be better understood through the following preferred embodiments described in detail in conjunction with the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components.

[0015] Figure 1 is a schematic diagram of a vehicle according to an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A front view of a bumper assembly in a vehicle;

[0017] Figure 3 yes Figure 2 A schematic cross-sectional view taken along section CC;

[0018] Figure 4 yes Figure 2A three-dimensional view of the bumper assembly in which the bumper skin 1 is hidden;

[0019] Figure 5a yes Figure 4 Anterior stereogram of middle area C;

[0020] Figure 5b yes Figure 4 rear stereogram of middle region C;

[0021] Figure 6a yes Figure 2 A front perspective view of a second buffer portion in a bumper assembly;

[0022] Figure 6b yes Figure 2 A rear perspective view of a second buffer portion in a bumper assembly;

[0023] Figure 7 yes Figure 2 FIG. 1 is a schematic cross-sectional view of the bumper assembly at the first buffer portion and the second buffer portion. DETAILED DESCRIPTION

[0024] The implementation and use of specific embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of specific ways to implement and use the invention, and are not intended to limit the scope of the invention.

[0025] In this specification, when describing the structural position of each component, directional expressions such as "upper", "lower", "left", "right", "top", "bottom" are not absolute but relative. When the components are arranged as shown in the figure, these directional expressions are appropriate, but when the position of the components in the figure changes, these directional expressions should also change accordingly.

[0026] In this specification, "front" and "rear" are defined with reference to the front-rear direction of the vehicle X. In addition, in this specification and the drawings, the X direction represents the longitudinal direction of the vehicle V (i.e., the driving direction of the vehicle), the Y direction represents the lateral direction of the vehicle V (i.e., the left-right direction at an angle of 90 degrees to the driving direction), and the Z direction represents the vertical direction of the vehicle V (i.e., the up-down direction perpendicular to the ground).

[0027] Below with the help of Figures 1 to 7 A preferred embodiment of the present invention will be described below.

[0028] like Figures 1 to 3As shown, the vehicle V includes a vehicle body bottom structure B and a bumper assembly A supported by the vehicle body bottom structure B. The bumper assembly A includes a bumper skin 1, a bumper frame 2, and a skin reinforcement 3. Among them, the bumper skin 1 forms the front surface F of the vehicle V. The bumper frame 2 is positioned behind the bumper skin 1 and supports the bumper skin 1. The skin reinforcement 3 is arranged between the bumper skin 1 and the bumper frame 2, and the skin reinforcement 3 is fixed to the bumper skin 1.

[0029] like Figures 3 to 5b As shown, the bumper frame 2 includes a frame body 21 and a first buffer portion 22 protruding from the frame body 21 backward along the X direction (i.e., along the direction away from the bumper skin 1), and the first buffer portion 22 is provided with a first cavity 222 including a front opening 221. More specifically, the frame body 21 is a long strip extending along the Y direction, and the first buffer portion 22 is provided at the end of the frame body 21 or a position close to the end. For example, Figure 4 As shown, a first buffer portion 22 is provided at the left and right ends of the skeleton body 21 respectively (the first buffer portion 22 at the right end is blocked by the skin reinforcement 3, not shown).

[0030] The skin reinforcement 3 includes a reinforcement body 31 and a second buffer portion 32 protruding backward from the reinforcement body 31 along the X direction. Figure 4 As shown, two symmetrical skin reinforcements 3 are respectively arranged along the Y direction. A second buffer portion 32 is respectively arranged at the left end or near the left end of the left skin reinforcement 3 and at the right end or near the right end of the right skin reinforcement 3.

[0031] The second buffer portion 32 at least partially extends into the first cavity 222 via the front opening 221 and includes an abutment portion 33. The abutment portion 33 abuts against the inner wall 223 of the first cavity 222 and is movable relative to the inner wall 223. According to one embodiment, the abutment portion 33 includes at least one first reinforcing rib 331 (e.g., Figure 6b As shown). According to one embodiment, the first reinforcing rib 331 may extend to the rear end of the second buffer portion 32. According to another embodiment, the abutment portion 33 is provided as the bottom wall 227 of the second buffer portion 32, and the bottom wall 227 has an angle inclined relative to the horizontal plane. The first buffer portion 22 provides upward support to the bumper skin 1 and the second buffer portion 32 to prevent the bumper skin 1 and the second buffer portion 32 from sinking.

[0032] like Figure 6a and Figure 6bAs shown, the reinforcement body 31 includes a plurality of connection parts 314 to fix the skin reinforcement 3 to the rear side of the bumper skin 1. For example, a plurality of rectangular connection parts 314 evenly distributed along the Y direction are provided above the second buffer part 32, and a rectangular connection part is provided below the second buffer part 32. For example, the skin reinforcement 3 is connected to the bumper skin 1 by welding at the connection part. In addition, a buckle 315 ( Figure 5a As shown), the buckle 315 is configured to be connected to the bottom structure B of the vehicle body.

[0033] When the vehicle V is hit from the front, the second buffer portion 32 connected to the bumper skin 1 moves backward along the inner wall 223 of the first cavity 222 through the abutting portion 33, and then is squeezed and deformed together with the second buffer portion 32. Through the above-mentioned displacement and deformation, the first buffer portion 22 and the second buffer portion 32 gradually attenuate the collision energy during the transmission process, improve the energy absorption efficiency, and thus play an effective buffering and protective role.

[0034] The first buffer portion 22 and the second buffer portion 32 are further described in detail below.

[0035] like Figure 5a and Figure 5b As shown, the first buffer portion 22 has a cross-sectional dimension that decreases rearward along the X direction, and includes a first energy absorbing portion 225 and a first guide portion 226. The first energy absorbing portion 225 extends rearward from the skeleton body 21 and is provided with a front opening 221, and the first guide portion 226 extends rearward from the rear end of the first energy absorbing portion 225 and abuts against the abutment portion 33 of the skin reinforcement 3. The first energy absorbing portion 225 also includes an abutment wall 2251 (such as a first guide portion 226) extending downward from the lower edge of the front opening 221. Figure 7 When the vehicle V is hit, the bumper skin 1 and the skin reinforcement 3 move backward and abut against the front side of the abutment wall 2251. In addition, the first guide portion 226 also has a rear opening 2262 to facilitate its manufacture.

[0036] The first buffer portion 22 is provided with at least one first weakened hole 224. For example, the first weakened hole 224 is provided on both the upper wall and the side wall of the first buffer portion 22 to weaken the strength of the first buffer portion 22, so that the first buffer portion 22 is more easily deformed when subjected to external force. Preferably, the area of ​​each first weakened hole 224 is greater than 60% of the area of ​​the wall where it is located.

[0037] like Figure 3 and Figure 7As shown, the first guide portion 226 preferably includes an abutment boss 229, which is disposed adjacent to the first energy absorbing portion 225, and the abutment portion 33 abuts against the abutment boss 229 and slides backward from the abutment boss 229 along the inner wall 226a of the first guide portion 226 in the event of a collision.

[0038] like Figures 5a to 6b As shown, at least one of the first cavity 222 and the second cavity 322 has a shape with a size that decreases rearwardly along the X direction. According to one embodiment, both the first cavity 222 and the second cavity 322 have a cross-sectional area that decreases rearwardly along the X direction.

[0039] like Figure 6a and Figure 6b As shown, the second buffer portion 32 includes a second energy absorbing portion 324 and a second guide portion 325. The second energy absorbing portion 324 extends from the reinforcement body 31 and is provided with at least one second weakened hole 323. For example, the second weakened hole 323 is provided on the upper wall and the side wall of the second buffer portion 32 to weaken the strength of the second energy absorbing portion 324, and the energy generated during the collision is converted into deformation energy to achieve the functions of buffering and energy absorption, thereby protecting the safety of the components and pedestrians in the vehicle. Preferably, the area of ​​each second weakened hole 323 is greater than 60% of the area of ​​the wall where it is located. The second guide portion 325 extends backward from the second energy absorbing portion 324 along the X direction and is suitable for at least partially extending into the first guide portion 226, so that the abutting portion 33 can abut against the abutting boss 229.

[0040] like Figure 3 and Figure 7 As shown, the vehicle body bottom structure B includes a support member 5. The support member 5 includes a support arm 51 extending along the Z direction and a support plate 52 extending vertically from the top of the support arm 51 and abutting against the first buffer portion 22. A connecting hole 511 is provided on the support arm 51, and the support member 5 is connected to other components of the vehicle body bottom structure B by a screw 54 passing through the connecting hole 511. The first guide portion 226 also includes at least one second reinforcing rib 2261 provided at the bottom thereof. For example, three second reinforcing ribs 2261 extending along the X direction are provided, and the support member 5 abuts against these second reinforcing ribs 2261. The support member 5 provides an upward supporting force to the bumper assembly A, thereby preventing the bumper assembly A from sinking.

[0041] The technical content and technical features of the present invention have been disclosed above. However, it can be understood that under the creative ideas of the present invention, technicians in this field can make various changes and improvements to the above-disclosed concepts, but all belong to the protection scope of the present invention.

[0042] The description of the above embodiments is intended to be illustrative rather than restrictive. The protection scope of the present invention is determined by the claims.

Claims

1. A bumper assembly (A), comprising: Bumper skin (1); A bumper frame (2), wherein the bumper frame (2) supports the bumper skin (1); as well as A skin reinforcement (3), wherein the skin reinforcement (3) is arranged between the bumper skin (1) and the bumper frame (2), and the skin reinforcement (3) is fixed to the bumper skin (1), It is characterized in that The bumper frame (2) comprises a frame body (21) and a first buffer portion (22) protruding from the frame body (21) in a direction away from the bumper skin (1), the first buffer portion (22) being provided with a first cavity (222) including an opening (221), and The skin reinforcement (3) comprises a reinforcement body (31) and a second buffer portion (32) protruding from the reinforcement body (31), wherein the second buffer portion (32) at least partially extends into the first cavity (222) via the opening (221) and comprises an abutment portion (33), wherein the abutment portion (33) abuts against an inner wall (223) of the first cavity (222) and is movable relative to the inner wall (223), The second buffer portion (32) is provided with a second cavity (322), and a wall (321) of the second cavity (322) is provided with at least one weakened hole (323).

2. The bumper assembly (A) according to claim 1, characterized in that: At least one of the first cavity (222) and the second cavity (322) has a shape having a size that decreases in a direction away from the bumper skin (1).

3. The bumper assembly (A) according to claim 2, characterized in that: The first buffer portion (22) comprises a first energy absorbing portion (225) and a first guiding portion (226). The first energy absorbing portion (225) extends from the skeleton body (21) and is provided with at least one weakened hole (224), and the first guide portion (226) extends from the first energy absorbing portion (225) in a direction away from the bumper surface (1) and abuts against the abutment portion (33).

4. The bumper assembly (A) according to claim 3, characterized in that: The first guide portion (226) comprises an abutment boss (229), wherein the abutment boss (229) is adjacent to the first energy absorbing portion (225) and abuts against the abutment portion (33).

5. The bumper assembly (A) according to claim 3, characterized in that: The second buffer portion (32) comprises a second energy absorbing portion (324) and a second guiding portion (325). The second energy absorbing portion (324) extends from the reinforcement body (31) and is provided with at least one weakened hole (323), and the second guide portion (325) extends from the second energy absorbing portion (324) in a direction away from the bumper surface (1) and is suitable for at least partially extending into the first guide portion (226).

6. The bumper assembly (A) according to any one of claims 1 to 5, characterized in that: The abutting portion (33) comprises at least one reinforcing rib (331) arranged at the bottom of the second buffer portion (32).

7. A vehicle (V) having a vertical direction (Z) denoting a direction perpendicular to the ground, characterized in that The vehicle (V) includes an underbody structure (B) and a bumper assembly (A) according to any one of claims 1 to 6 supported by the underbody structure (B).

8. The vehicle (V) according to claim 7, characterized in that The vehicle body bottom structure (B) comprises a support member (5), wherein the support member (5) comprises a support arm (51) extending along the vertical direction (Z) and a support plate (52) extending vertically from the top of the support arm (51) and abutting against the first buffer portion (22).

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