A structure of an inner panel of a hood of an automobile

Abstract

This utility model discloses an inner panel structure for an automobile engine hood, integrally stamped and formed. It includes an inner panel body, on which a front beam, side beams, and a rear beam are provided. The side beams connect to the front and rear beams on both sides. A double X-shaped rib beam is provided in the middle of the inner panel body, connecting the front and rear beams at their midpoints and at the junctions with the side beams. The double X-shaped rib beams form a boss structure in the middle of the inner panel body. This utility model's inner panel for the engine hood uses an integral stamping process, simplifying the mold and sheet metal processing, thus achieving high production efficiency and meeting the needs of mass production by vehicle manufacturers. The sheet metal structure of the inner panel also possesses high strength and rigidity, adapting to both daily and off-road driving conditions.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body structure installation technology, specifically to an inner panel structure for an automobile engine hood. Background Technology

[0002] The engine hood is the front cover, consisting of an outer panel, an inner panel, hood hinges, hood latches and latch reinforcement plates, and related reinforcement plates. The outer and inner panels are connected via an edge-sealing process. The inner panel has a groove with vibration-damping material to prevent noise. The hood hinges, inner panel, and hinge reinforcement plates are connected by spot welding and bolts. The hood latches and latch reinforcement plates are welded together, and the latch reinforcement plates are spot-welded to the inner panel. The main functions of the inner hood panel are: to support the outer hood panel, increasing the overall rigidity of the hood and thus improving the overall modal response and reducing resonance; to meet the installation requirements of the latches and hinge accessories; and to meet the hood's dent resistance requirements. The inner hood panel is generally manufactured using a one-piece stamping process, with stamped grooves and a central beam to meet the rigidity requirements of the inner panel during installation and operation. During the assembly of hinges and latches, the mounting point stiffness of the inner panel needs to reach the target value to ensure no deformation occurs during installation. During use, to ensure the hood's dent resistance, the hood also needs high stiffness. However, in pedestrian protection crash tests, the excessive strength of the hood's inner panel structure led to excessive head injuries to pedestrians during a collision. In existing technologies, reducing the hood's stiffness is beneficial for pedestrian protection, but an excessively weak structure and low stiffness can affect modal dynamics, causing resonance between the hood and other vehicle body parts, and deformation of parts during hood assembly. Current hood inner panel designs struggle to achieve a balance between these two performance characteristics. Utility Model Content

[0003] The purpose of this utility model is to provide an inner panel structure for an automobile engine hood to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an inner panel structure for an automobile engine hood, integrally stamped and formed, including an inner panel body, on which a front beam, a side beam, and a rear beam are provided, with the side beams connecting the front beam and the rear beam on both sides.

[0005] The inner panel of the hood is provided with a double X-shaped rib beam in the middle. The connection points of the double X-shaped rib beam include the middle of the front beam and the rear beam, as well as the connection points between the front beam, the rear beam and the side beam.

[0006] The double X-shaped ribs form a boss structure in the middle of the inner panel of the hood.

[0007] Preferably, the inner panel of the hood is provided with multiple protruding structures, among which the protruding structure located on the front beam is surrounded by reinforcing ribs, and the protruding structure is used to install buffer blocks.

[0008] Preferably, the double X-shaped stiffener beam has symmetrical hairline adhesive grooves on both sides, which are used to install vibration damping adhesive. The double X-shaped stiffener beam is connected to the outer panel of the machine cover through the vibration damping adhesive.

[0009] Preferably, the double-X-shaped reinforced beam includes diagonal reinforcement and vertical reinforcement, with the diagonal reinforcement forming a double-X-shaped structure and the vertical reinforcement located in the middle and connected to the rear beam.

[0010] Preferably, the front beam is connected to the double X-shaped stiffened beam to form an enclosed space, the front beam, the double X-shaped stiffened beam and the side beam are connected to form an enclosed space, and the rear beam is connected to the double X-shaped stiffened beam to form an enclosed space.

[0011] Preferably, the enclosed space formed by the double X-shaped stiffener beam, the front beam, the side beam, and the rear beam includes the front beam vertical wall, the side beam vertical wall, and the rear beam vertical wall. Weight reduction holes are provided on the front beam vertical wall, the side beam vertical wall, and the rear beam vertical wall, and the weight reduction holes are symmetrically distributed.

[0012] Preferably, hinge mounting holes are provided at both ends of the rear beam, and a recessed platform reinforcement structure is provided in the middle of the hinge mounting holes.

[0013] Preferably, a locking hook mounting hole is provided at the center axis position of the front beam.

[0014] Preferably, the front beam, side beam, and rear beam all have a Z-shaped cross-section.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the inner panel of the engine hood of this utility model adopts an integrated stamping process, and the mold and sheet metal processing technology is simple, so it has a high production and processing efficiency, which can meet the needs of mass production of vehicle manufacturers. The sheet metal structure of the inner panel of the engine hood also has high strength and rigidity, which can adapt to the daily and off-road use conditions of automobiles.

[0016] The inner panel of the engine hood adopts a double X-shaped rib beam structure at the center, which reduces the width of the sheet metal and the weight of the inner panel body, thereby reducing production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of a Z-shaped cross-section structure;

[0019] Figure 3 This is a schematic diagram of the locking hole of this utility model;

[0020] Figure 4 This is a schematic diagram of the double X-shaped stiffener beam structure of this utility model;

[0021] Figure 5This is a schematic diagram of the hinge mounting hole of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, this utility model provides a technical solution: an inner panel structure for an automobile engine hood, integrally stamped and formed, including an inner panel body, on which a front beam 1, side beams 21 and 22, and a rear beam 3 are provided, with the side beams 21 and 22 connecting the front beam 1 and the rear beam 3 on both sides; see reference. Figure 2 As shown, the cross-sectional shapes of the front beam 1, side beam 2, and rear beam 3 are all Z-shaped structures.

[0024] The inner panel of the hood is provided with a double X-shaped rib beam in the middle. The connection points of the double X-shaped rib beam include the middle of the front beam 1 and the rear beam 3, as well as the connection points of the front beam 1, the rear beam 3 and the side beams 21 and 22. The front beam 1, the side beam 2 and the rear beam 3 are connected to the double X-shaped rib beam through two stepped descents.

[0025] The double X-shaped ribs form a boss structure in the middle of the inner panel of the hood. (Refer to...) Figure 4 As shown, the double-X-shaped stiffened beam includes diagonal bars 61, 62, 63, 64, 65, 66, 67, and 68, and vertical bar 7. The diagonal bars 61, 62, 63, 64, 65, 66, 67, and 68 form a double-X-shaped structure, with vertical bar 7 located in the middle and connected to the rear beam 3. This effectively improves the modal and rigidity strength of the hood, ensuring performance during installation and use. Furthermore, the double-X-shaped structure allows the hood to effectively collapse in the event of a car accident.

[0026] The double X-shaped stiffener beam has symmetrical cover adhesive grooves 5 on both sides. These grooves are used to install vibration-damping adhesive, and the double X-shaped stiffener beam is connected to the outer cover plate via the adhesive. Specifically, there are fifty-two cover adhesive grooves, distributed as follows: Figure 1 and 4 As shown, hairnet grooves are provided on both the diagonal and vertical ribs, and the distribution is symmetrical. There is a large amount of hairnet adhesive, which ensures the shock absorption performance of the hairnet during vehicle operation.

[0027] The front beam 1 connects to the double X-shaped stiffener beam to form an enclosed space. The front beam 1, the double X-shaped stiffener beam, and the side beam 2 connect to form an enclosed space. The rear beam 3 connects to the double X-shaped stiffener beam to form an enclosed space. The enclosed space formed by the double X-shaped stiffener beam, the front beam 1, the side beam 2, and the rear beam 3 includes the vertical walls of the front beam, the side beam, and the rear beam. Weight-reducing holes 91, 92, 93, 94, 95, 96, 97, 98, 99, 910, 911, and 912 are symmetrically distributed on the vertical walls of the front beam, side beam, and rear beam. This further reduces the weight of the inner hood plate and decreases fuel consumption.

[0028] Reference Figure 3 As shown, a locking hook mounting hole 12 is provided at the center axis position of the front beam 1. The opening and closing of the cover is achieved by spot welding the cover to the locking hook reinforcing plate, which is then welded to the locking hook.

[0029] The inner panel of the engine cover is provided with multiple protruding structures 41, 42, 43, 44, 45, 46, and 4. Among them, the protruding structure located on the front beam is surrounded by reinforcing ribs 13. The protruding structures 43 and 45 are buffer block mounting points, and there are cross reinforcing ribs around them. When the engine cover is closed, they play a buffering role and protect the sheet metal of the engine cover and the sheet metal of the upper beam of the water tank.

[0030] After CAE analysis and verification, the inner panel of the engine hood can meet the requirements of engine hood anti-dent, latch installation, and engine hood slamming, and plays a very good supporting role. Due to the double X-shaped rib beam structure, it has good pedestrian protection while ensuring the above-mentioned rigidity.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for an inner panel of an automobile engine hood, characterized in that: The machine is integrally stamped and formed, including the inner panel body of the machine cover. The inner panel body of the machine cover is provided with a front beam (1), side beams (21, 22) and a rear beam (3). The side beams (21, 22) are connected to the front beam (1) and the rear beam (3) on both sides. The inner panel of the hood is provided with a double X-shaped rib beam in the middle. The connection positions of the double X-shaped rib beam include the middle of the front beam (1) and the rear beam (3), as well as the connection between the front beam (1), the rear beam (3) and the side beams (21, 22). The double X-shaped ribs form a boss structure in the middle of the inner panel of the hood.

2. The inner panel structure of an automobile engine hood according to claim 1, characterized in that: The inner panel of the hood is provided with multiple protruding structures, among which the protruding structure located on the front beam is surrounded by reinforcing ribs (13), and the protruding structure is used to install buffer blocks.

3. The inner panel structure of an automobile engine hood according to claim 1, characterized in that: The double X-shaped stiffener beam has symmetrical hair cover adhesive grooves (5) on both sides. The hair cover adhesive grooves (5) are used to install vibration isolation adhesive. The double X-shaped stiffener beam is connected to the outer plate of the machine cover through vibration isolation adhesive.

4. The inner panel structure of an automobile engine hood according to claim 3, characterized in that: The double X-shaped reinforced beam includes diagonal bars (61, 62, 63, 64, 65, 66, 67, 68) and vertical bars (7). The diagonal bars (61, 62, 63, 64, 65, 66, 67, 68) form a double X-shaped structure, and the vertical bars (7) are located in the middle and connected to the rear beam (3).

5. The inner panel structure of an automobile engine hood according to claim 4, characterized in that: The front beam (1) is connected to the double X-shaped reinforcing beam to form an enclosed space. The front beam (1), the double X-shaped reinforcing beam and the side beam (2) are connected to form an enclosed space. The rear beam (3) is connected to the double X-shaped reinforcing beam to form an enclosed space.

6. The inner panel structure of an automobile engine hood according to claim 5, characterized in that: The enclosed space formed by the double X-shaped stiffened beam, the front beam (1), the side beam (2) and the rear beam (3) includes the front beam vertical wall, the side beam vertical wall and the rear beam vertical wall. Weight reduction holes are provided on the front beam vertical wall, the side beam vertical wall and the rear beam vertical wall, and the weight reduction holes are symmetrically distributed.

7. The inner panel structure of an automobile engine hood according to claim 1, characterized in that: The rear beam (3) has hinge mounting holes (11) at both ends, and a recessed platform reinforcement structure is provided in the middle of the hinge mounting holes (11).

8. The inner panel structure of an automobile engine hood according to claim 1, characterized in that: A locking hook mounting hole (12) is provided at the center axis position of the front beam (1).

9. The inner panel structure of an automobile engine hood according to claim 1, characterized in that: The front beam (1), side beam (2) and rear beam (3) all have a Z-shaped cross section.

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