Front trunk structure and vehicle

Abstract

The present invention belongs to the technical field of automobile trunks, and specifically relates to a trunk structure and vehicle. The trunk structure comprises: a trunk body; a connecting assembly disposed on the trunk body and fixedly connected to a front frame and a front crossbeam of the vehicle body; and a first support assembly disposed on the back of the trunk body, with its bottom surface contacting a support profile disposed on the front frame and its rear side surface providing a gap with a buffer surface disposed on the front frame. The purpose of the present invention is to address the issue of low trunk structural strength in electric vehicles.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile front trunks, and in particular relates to a front trunk structure and a vehicle. Background Art

[0002] New energy vehicles, such as electric and hydrogen vehicles, lack engines and other related parts, resulting in relatively ample space within the engine compartment. Considering the ample space within the front engine compartment of electric vehicles, a front trunk storage space is designed for user use, increasing storage space and meeting daily needs. Currently, the front trunk load capacity of mass-produced models is generally 20-25kg. With the diversification of user needs, the load-bearing durability of the front trunk is becoming increasingly important.

[0003] Chinese patent CN115583201A discloses a vehicle trunk structure, including a trunk mounted at the front end of the vehicle body and located behind the front bumper. The upper end surface of the front bumper is approximately flush with the bottom of the inner wall of the trunk. The purpose of this structure is to extend the bottom of the trunk forward to be approximately flush with the upper end surface of the front bumper. This facilitates users to access items in the trunk while also providing a passenger compartment when the trunk lid is opened. This meets users' needs for seating and resting during outdoor outings and camping, thereby improving the utilization of the trunk space. However, during use, the trunk of a vehicle may be damaged due to exceeding its load-bearing capacity. Summary of the Invention

[0004] The purpose of the present invention is to provide a front trunk structure and a vehicle, so as to solve the problem of low strength of the front trunk structure of electric vehicles.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] A front trunk structure, comprising:

[0007] The front trunk body;

[0008] A connecting assembly, the connecting assembly being provided on the front trunk body and being used for fixedly connecting to the front end frame on the vehicle body and the front crossbeam of the cabin respectively;

[0009] The first support component is arranged on the back of the front trunk body, the bottom surface of the first support component is in contact with the support surface arranged on the front end frame, and the rear side surface is provided with a gap with the buffer surface arranged on the front end frame.

[0010] Preferably, the bottom of the first support assembly is configured as a grid structure, and the grid structure is configured as a square hole grid structure, which is conducive to improving the structural strength of the front trunk body while achieving structural lightweight.

[0011] Preferably, a plurality of buffer plates are arranged at equal intervals on the rear side of the first support assembly, which is helpful in reducing the impact on the front trunk body during braking.

[0012] Preferably, the gap between the buffer plate and the buffer surface is set to 2-5 mm.

[0013] Preferably, a longitudinal reinforcement feature is fixed to the bottom inner wall of the front trunk body, and a back reinforcement rib is fixed to the bottom outer wall of the front trunk body. The longitudinal reinforcement feature includes a plurality of protrusions, which are evenly spaced along the length of the front trunk body, and the back reinforcement ribs are staggered with the longitudinal reinforcement feature. This arrangement helps to improve the structural strength of the front trunk body.

[0014] Preferably, the front trunk body is integrally injection-molded with PP+EPDM-TD20, which is conducive to achieving lightweight structure.

[0015] Preferably, the connecting assembly includes a first sunken platform, which is fixed to the front trunk body and has a first fixing hole defined therein. The front frame is provided with a mounting platform, which has a first mating hole defined therein, and a first bolt is disposed in the first mating hole and passes through the first fixing hole. This arrangement facilitates the connection between the front trunk body and the front frame.

[0016] Preferably, the connecting assembly includes a second sunken platform, which is fixed to the front trunk body. A second fixing hole is defined at the bottom of the second sunken platform, and a second matching hole is defined on the upper surface of the front crossbeam of the cabin. A second bolt is disposed in the second matching hole, and the second bolt passes through the second fixing hole. This arrangement facilitates the connection between the front trunk body and the front crossbeam of the cabin.

[0017] Preferably, the system further includes a second support assembly, which is fixedly connected to the back of the front trunk body and has a U-shaped structure, with two vertical arms of the second support assembly supporting the upper surface of the front crossbeam of the cabin. This arrangement is conducive to improving the vertical impact resistance of the front trunk body.

[0018] A vehicle comprises a vehicle body and the above-mentioned front trunk structure, wherein the front trunk structure is arranged on the vehicle body.

[0019] The invention adopting the above technical solution has the following advantages:

[0020] 1. In this solution, longitudinal reinforcement features and back reinforcement ribs are provided on the front trunk body to improve the structural strength of the front trunk body. The front trunk body is connected to the front crossbeam and the front end frame respectively, and the vertical impact strength of the front trunk body is improved by the support assembly;

[0021] 2. In this solution, a number of buffer plates are arranged at equal intervals on the rear side surface of the first support seat, and gaps are set between the buffer plates and the buffer surface. When the vehicle brakes, the items stored in the front trunk body squeeze and impact the front side wall of the front trunk body under the action of inertia, and the front trunk body is deformed. The buffer plate moves toward the buffer surface, and part of the impact force is consumed by moving through the gap. The buffer plate contacts the buffer surface, and the buffer plate deforms to absorb the remaining impact force. The front trunk body has a strong ability to resist braking impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0023] Figure 1 This is one of the structural schematic diagrams of an embodiment of a front trunk structure of the present invention;

[0024] Figure 2 This is a structural schematic diagram of the front trunk bottom of an embodiment of the front trunk structure of the present invention;

[0025] Figure 3 This is a second structural diagram of a front trunk structure embodiment of the present invention;

[0026] Figure 4 for Figure 3 Cross-sectional structural diagram at AA in the middle;

[0027] Figure 5 This is a structural schematic diagram of a front end frame and a front crossbeam of a cabin in an embodiment of a front trunk structure of the present invention;

[0028] Figure 6 This is a third structural diagram of an embodiment of a front trunk structure of the present invention;

[0029] Figure 7 for Figure 6 Cross-sectional structural diagram at the middle BB;

[0030] Figure 8 for Figure 6 Cross-sectional structural diagram at CC;

[0031] Figure 9 for Figure 6 Cross-sectional structural diagram at DD in the middle;

[0032] Figure 10 for Figure 6 Cross-sectional structural diagram at EE in the middle;

[0033] The main component symbols are described as follows:

[0034] 1. Front trunk body; 110. First support assembly; 111. Grid structure; 112. Buffer plate; 120. Longitudinal reinforcement feature; 130. Back reinforcement rib; 140. First sinking platform; 150. Second sinking platform; 160. Second support assembly; 2. Front end frame; 21. Support profile; 22. Buffer surface; 3. Front crossbeam of the cabin. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts are numbered the same. Implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. In addition, directional terms mentioned in the embodiments, such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back," are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0036] like Figures 1 to 10 As shown, a front trunk structure of the present invention includes a front trunk body 1, on which a connecting assembly, a first support assembly 110 and a second support assembly 160 are provided. The front trunk body 1 is fixedly connected to the front end frame 2 and the cabin front cross beam 3 on the vehicle body through the connecting assembly. The first support assembly 110 cooperates with the cabin front cross beam 3, and the second support assembly 160 cooperates with the front end frame 2 to support the front trunk body 1, so as to improve the structural strength of the front trunk body 1.

[0037] like Figure 1 、 Figure 3 and Figure 4 As shown, in this embodiment, a longitudinal reinforcement feature 120 is integrally formed on the bottom inner wall of the front trunk body 1. The longitudinal reinforcement feature 120 is a plurality of protrusions, and the plurality of protrusions are arranged in parallel at equal intervals along the length direction of the front trunk body 1. A back reinforcement rib 130 is integrally formed on the bottom outer wall of the front trunk body 1. The longitudinal reinforcement feature 120 and the back reinforcement rib 130 are staggered in space to improve the structural strength of the front trunk body 1.

[0038] like Figure 1 、 Figure 6 、 Figure 7 and Figure 8As shown, in this embodiment, the connecting component includes a first sinker 140, the first sinker 140 and the front trunk body 1 are integrally formed, the first sinker 140 is arranged close to the front end frame 2, and four first sinkers 140 are arranged along the length direction of the front trunk body 1, a first fixing hole is opened in the first sinker 140, and an installation platform is provided on the front end frame 2, a first matching hole is opened on the installation platform, a rivet nut is provided in the first matching hole, a first bolt is provided in the first matching hole to cooperate with the rivet nut, and the front trunk body 1 and the front end frame 2 are fixedly connected by the first bolt passing through the first fixing hole.

[0039] like Figure 2 As shown, the first support component 110 is integrally formed on the back of the front trunk body 1, and five first support components 110 are arranged at equal intervals along the length direction of the front trunk body 1. A support profile 21 and a buffer surface 22 are integrally formed on the front end frame 2. The bottom surface of the first support component 110 contacts the support profile 21, and a gap is set between the rear side surface of the first support component 110 and the buffer surface 22. The rear side surface of the first support component 110 is close to the front side of the front trunk body 1.

[0040] It is understood that the bottom of the first support assembly 110 is configured as a grid structure 111. Without affecting the support strength of the front trunk body 1, the bottom of the first support assembly 110 is configured as the grid structure 111 to achieve a lightweight effect. The grid structure in this embodiment can be a square hole grid structure. The grid structure 111 in other embodiments of the present application can also be a circular hole grid structure or a parallelepiped grid structure.

[0041] At the same time, a plurality of buffer plates 112 are integrally formed at equal intervals behind the first support assembly 110, and the gap between the buffer plates 112 and the buffer surface 22 can be set to 2-5mm. In this embodiment, the preferred gap is set to 3mm. In order to meet the bottom surface load-bearing requirements and the impact strength of the front side of the front trunk body 1 under braking conditions, and to protect the front trunk body 1 from breaking, the structural strength of the front trunk body 1 is improved. By arranging a plurality of buffer plates 112 at equal intervals on the rear side surface of the first support seat, and setting a gap between the buffer plates 112 and the buffer surface 22, when the vehicle brakes, the items stored in the front trunk body 1 squeeze and impact the front side wall of the front trunk body 1 under the action of inertia, the front trunk body 1 is deformed, and the buffer plates 112 move toward the buffer surface 22. The movement through the gap has consumed part of the impact force, and the buffer plates 112 come into contact with the buffer surface 22. The buffer plates 112 deform and absorb the remaining impact force; the front trunk body 1 has a strong ability to resist braking impact.

[0042] like Figure 1 、 Figure 6 、 Figure 7 and Figure 8As shown, in this embodiment, the connection assembly further includes a second sunken platform 150, which is integrally formed on the front trunk body 1 and is located in the middle of the bottom surface of the front trunk body 1, corresponding to the top of the cabin front crossbeam 3. A second fixing hole is formed at the bottom of the second sunken platform 150, and a second matching hole is formed on the upper surface of the cabin front crossbeam 3. A rivet nut is disposed in the second matching hole, and a second bolt is disposed in the second matching hole to cooperate with the rivet nut. The second bolt passes through the second fixing hole to secure the front trunk body 1 to the cabin front crossbeam 3.

[0043] like Figure 9 As shown, the front trunk structure also includes a second support assembly 160, which is integrally formed on the back of the front trunk body 1 and is arranged corresponding to the front cross beam 3 of the cabin. Three second support assemblies 160 are arranged along the length direction of the front cross beam 3 of the cabin. The second support assembly 160 is a U-shaped structure, and the two vertical arms of the second support assembly 160 are supported on the upper surface of the front cross beam 3 of the cabin.

[0044] In this embodiment, the front trunk body 1, connecting assembly, first support assembly 110, second support assembly 160, longitudinal reinforcement 120, and back reinforcement rib 130 are all integrally molded using PP+EPDM-TD20 injection molding, weighing 5.7 kg. Using conventional PP+GF30 injection molding, the weight is 6.2 kg, achieving a weight reduction of 0.5 kg and achieving a lightweight design.

[0045] CAE simulation analysis and optimization were performed on the front trunk structure of the present application. At 0 degrees Celsius and 80 degrees Celsius, the bottom surface of the front trunk body 1 has a vertical force stiffness of 750N. When a 35kg load braking impact is applied to the front side of the front trunk body 1, the front trunk body 1 is not damaged, and the structural strength is high.

[0046] A vehicle comprises a vehicle body and the above-mentioned front trunk structure, wherein the front trunk structure is arranged on the vehicle body to improve the structural strength and load-bearing capacity of the vehicle front trunk and enhance user satisfaction.

[0047] The above describes in detail the front trunk structure and vehicle provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A front trunk structure, characterized by: include: Front trunk body (1); A connecting assembly, the connecting assembly being arranged on the front trunk body (1) and being used for being fixedly connected to the front end frame (2) on the vehicle body and the front cross beam (3) of the engine room; A first support assembly (110), the first support assembly being arranged on the back of the front trunk body (1), the bottom surface of the first support assembly being in contact with a support profile (21) arranged on the front end frame (2), and the rear side surface being spaced apart from a buffer surface (22) arranged on the front end frame (2); The bottom of the first support assembly (110) is configured as a grid structure (111), and the grid structure (111) is configured as a square hole grid structure; A plurality of buffer plates (112) are arranged at equal intervals on the rear side surface of the first support assembly (110); The gap between the buffer plate (112) and the buffer surface (22) is set to 2-5 mm; It also includes a second support assembly (160), which is fixed to the back of the front trunk body (1), and the second support assembly (160) is a U-shaped structure, and two vertical arms of the second support assembly (160) are supported on the upper surface of the front cross beam (3) of the cabin.

2. The front trunk structure according to claim 1, characterized in that: A longitudinal reinforcing feature (120) is fixedly connected to the bottom inner wall of the front trunk body (1), and a back reinforcing rib (130) is fixedly connected to the bottom outer wall of the front trunk body (1). The longitudinal reinforcing feature (120) includes a plurality of protrusions, and the plurality of protrusions are arranged at equal intervals along the length direction of the front trunk body (1), and the back reinforcing rib (130) and the longitudinal reinforcing feature (120) are arranged in an alternating manner.

3. The front trunk structure according to claim 1, characterized in that: The front trunk body (1) is integrally injection-molded using PP+EPDM-TD20.

4. The front trunk structure according to claim 1, characterized in that: The connecting assembly comprises a first sinking platform (140), the first sinking platform (140) being fixedly connected to the front trunk body (1), a first fixing hole being provided in the first sinking platform (140), a mounting platform being provided on the front end frame (2), a first matching hole being provided on the mounting platform, a first bolt being provided in the first matching hole, and the first bolt passing through the first fixing hole.

5. The front trunk structure according to claim 1, characterized in that: The connecting assembly includes a second sinking platform (150), the second sinking platform (150) is fixed to the front trunk body (1), a second fixing hole is provided at the bottom of the second sinking platform (150), a second matching hole is provided on the upper surface of the front cross beam (3) of the cabin, a second bolt is provided in the second matching hole, and the second bolt passes through the second fixing hole.

6. A vehicle, characterized in that: It comprises a vehicle body and a front trunk structure according to any one of claims 1 to 5, wherein the front trunk structure is arranged on the vehicle body.

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