Sealing structure for automobile cabin cover

Abstract

The utility model belongs to the technical field of automobile engine room cover sealing strips, and particularly relates to a sealing structure for an automobile engine room cover. A sealing structure for an automobile cabin cover comprises an engine cover outer plate, a front bumper, a water tank upper cross beam decorative plate and an engine cover inner plate, and the automobile cabin cover is connected with a sealing mechanism. One end of the foam rubber is connected with the front bumper and the water tank upper cross beam decorative plate, the other end of the foam rubber is connected with the dense rubber, preliminary sealing and buffering effects are achieved, gaps can be filled, air and dust entering can be reduced, and the dense rubber can further enhance the sealing effect and prevent rainwater, dust and the like from invading a cabin. The noise generated by the air at the front edge of the automobile cabin cover can be eliminated under the synergistic cooperation and combined action of the foam rubber and the dense rubber.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive hood sealing strips. Specifically, this utility model relates to a sealing structure for automotive hoods. Background Technology

[0002] With the rapid development of the automotive industry, consumers are placing increasingly higher demands on vehicle performance and driving experience. Among the many factors affecting the driving experience, in-vehicle noise level has become a key indicator, and wind noise under the hood is a significant component of in-vehicle noise. During vehicle operation, air interacts with the vehicle's surface, generating complex aerodynamic phenomena. When airflow passes under the hood, it triggers a series of issues leading to wind noise. On one hand, the shape and structural design of the hood affect the airflow characteristics. Currently, wind noise under the hood remains a persistent problem, especially at high speeds, where its control is particularly challenging.

[0003] Chinese Patent (Announcement No.: CN203937740U) discloses an automotive engine compartment sealing device for sealing the gap between the front bulkhead and the drain cover. The device includes a cylindrical body and a slotted plate fixedly connected to the cylindrical body. The slotted plate includes a body, a first groove for securing one end face of the drain cover, and a second groove for securing one end face of a mounting plate. The other end face of the mounting plate is fixedly connected to the front bulkhead. When using the sealing device, the surface of the cylindrical body can fit tightly against the surface of the front bulkhead, and the body and the cylindrical body together seal the gap between the front bulkhead and the drain cover. However, noise still exists inside the automotive engine compartment. Utility Model Content

[0004] This utility model is designed to solve the above-mentioned problems and aims to provide a sealing structure for a car hood that can eliminate noise generated by the air at the front edge of the car hood. To achieve the above objective, the technical solution adopted by this utility model is as follows: a sealing structure for a car hood, including an outer hood panel, a front bumper, a water tank upper beam decorative panel, and an inner hood panel, wherein the car hood is connected to a sealing mechanism.

[0005] The sealing mechanism includes foam adhesive, one end of which is connected to the front bumper and the decorative panel of the upper crossbeam of the water tank, and the other end of which is connected to solid adhesive. One side of the solid adhesive is connected to the outer panel of the engine hood, and the other end of the solid adhesive is connected to the inner panel of the engine hood.

[0006] A sealing strip buckle is connected to the solid adhesive, and a first groove is provided on the inner plate of the engine cover to cooperate with the sealing strip buckle. The sealing strip buckle cooperates with the first groove.

[0007] The sealing strip latch includes a first sealing plate, which is connected to a sealant. A first connecting plate is connected to both sides of one end of the first sealing plate, and the first connecting plate is engaged into a first groove.

[0008] The solid adhesive includes a first solid adhesive, one end of which is bent into a second solid adhesive, the cross-section of which is an arc-shaped structure, and the arc-shaped structure is fitted to the outer panel of the engine hood.

[0009] The cross-section of the foam adhesive is semi-circular.

[0010] The angle between the first sealing plate and the first connecting plate is between 30 and 45 degrees.

[0011] The technical effects of this invention are as follows: The foam adhesive has good elasticity and cushioning properties. One end of the foam adhesive connects to the front bumper and the decorative panel on the upper beam of the radiator, while the other end connects to the solid adhesive, providing initial sealing and cushioning, filling gaps, and reducing the entry of air and dust. The foam adhesive is adhered to the inner panel of the hood via its backing adhesive. The foam adhesive also has a certain sound insulation effect, reducing the transmission of engine compartment noise to the outside of the vehicle. The solid adhesive further enhances the sealing effect, preventing rainwater and dust from entering the engine compartment. The first solid adhesive connects to and adheres to the inner panel of the hood, better sealing the inner panel. The second solid adhesive is integrally molded with the first solid adhesive, and its arc-shaped structure allows for greater contact with the outer panel of the hood, achieving a better sealing effect. The synergistic effect of the foam adhesive and the solid adhesive eliminates noise generated by airflow at the front edge of the car hood. Attached Figure Description

[0012] This manual includes the following figures, which illustrate the following:

[0013] Figure 1 This is a schematic diagram of the overall structure of a sealing structure for an automobile engine compartment hood according to the present invention;

[0014] Figure 2 This is a schematic diagram of a sealing structure and sealing mechanism for an automobile engine hood according to the present invention;

[0015] Figure 3 This is an enlarged view of the first sealing adhesive, the second sealing adhesive, and the sealing strip latch of a sealing structure for an automobile engine hood according to this utility model.

[0016] The markings in the diagram are as follows: 1. Outer panel of engine hood; 2. Sealing mechanism; 201. Foam adhesive; 202. Solid adhesive; 203. First solid adhesive; 204. Second solid adhesive; 205. Arc-shaped structure; 3. Front bumper; 4. Water tank upper beam decorative panel; 5. Sealing strip buckle; 501. First sealing plate; 502. First connecting plate; 6. Inner panel of engine hood. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0018] like Figures 1-3 As shown, a sealing structure for an automobile hood includes an outer hood panel 1, a front bumper 3, a radiator upper beam trim panel 4, and an inner hood panel 6. A sealing mechanism 2 is connected to the hood. The outer hood panel 1, as the outer covering of the hood, protects internal engine compartment components from external physical damage and rainwater erosion. The front bumper 3, installed at the front of the vehicle, absorbs and buffers impact energy during a collision, protecting vital vehicle components and pedestrian safety. The radiator upper beam trim panel 4 decorates the radiator upper beam. The inner hood panel 6, together with the outer hood panel 1, constitutes the main structure of the hood, providing structural strength and preventing deformation. The sealing mechanism 2, connected to the outer hood panel 1, front bumper 3, radiator upper beam trim panel 4, and inner hood panel 6, solves the wind noise problem caused by the gap between the hood and the front bumper 3.

[0019] The sealing mechanism 2 includes foam adhesive 201. One end of foam adhesive 201 is connected to the front bumper 3 and the upper crossbeam trim panel 4 of the radiator, while the other end of foam adhesive 201 is connected to solid adhesive 202. One side of solid adhesive 202 is connected to the outer panel 1 of the hood, and the other end of solid adhesive 202 is connected to the inner panel 6 of the hood. Foam adhesive 201 has good elasticity and cushioning properties. The connection of one end of foam adhesive 201 to the front bumper 3 and the upper crossbeam trim panel 4, and the connection of the other end to solid adhesive 202, serves as a preliminary seal and cushioning mechanism, filling gaps and reducing the ingress of air and dust. Foam adhesive 201 is attached to the inner panel 6 of the engine hood with adhesive backing, which can further seal the inner panel 6 of the engine hood. At the same time, foam adhesive 201 is connected with solid adhesive 202. Foam adhesive 201 also has a certain sound insulation effect, which can reduce the transmission of noise from the engine compartment to the outside of the vehicle. Solid adhesive 202 can further enhance the sealing effect and prevent rainwater, dust and other substances from entering the engine compartment. With the synergistic effect of foam adhesive 201 and solid adhesive 202, the noise generated by the air at the front edge of the car engine hood can be eliminated.

[0020] A sealing strip latch 5 is connected to the solid adhesive 202. A first groove is provided on the inner panel 6 of the engine hood to cooperate with the sealing strip latch 5. The sealing strip latch 5 cooperates with the first groove. A hole is opened in the solid adhesive 202. One end of the sealing strip latch 5 passes through the hole in the solid adhesive 202 and cooperates with the first groove on the inner panel 6 of the engine hood to fix the solid adhesive 202.

[0021] The sealing strip latch 5 includes a first sealing plate 501, which is connected to the sealing adhesive 202. The first sealing plate 501 has first connecting plates 502 connected to both sides of one end of the first sealing plate 501. The first connecting plates 502 are engaged in the first groove. The first sealing plate 501 has a T-shaped structure. One end of the first sealing plate 501 passes through the sealing adhesive 202, and the end of the first sealing plate 501 enters the first groove. The first connecting plates 502 symmetrically arranged on the first sealing plate 501 will follow the first sealing plate 501 into the first groove. Since there is a certain angle between the first sealing plate 501 and the first connecting plate 502, the first connecting plate 502 will abut against the inner plate 6 of the engine hood in the first groove to fix the sealing adhesive 202.

[0022] The sealing adhesive 202 includes a first sealing adhesive 203, one end of which is bent into a second sealing adhesive 204. The second sealing adhesive 204 has an arc-shaped cross-section 205, which fits snugly against the outer panel 1 of the engine hood to better seal the inner panel 6 of the engine hood. The first sealing adhesive 203 is connected to and fits snugly against the inner panel 6 of the engine hood. The second sealing adhesive 204 and the first sealing adhesive 203 are integrally molded. The arc-shaped structure 205 on the second sealing adhesive 204 can have a larger contact area with the outer panel 1 of the engine hood, achieving a better sealing effect on the outer panel 1 of the engine hood.

[0023] The cross-section of foam adhesive 201 is semi-circular, which gives it good elasticity and cushioning properties.

[0024] The angle between the first sealing plate 501 and the first connecting plate 502 is between 30 and 45 degrees. Within this angle range, when the first connecting plate 502 engages with the first groove of the inner panel 6 of the engine hood, it can generate sufficient clamping force. When the vehicle is subjected to external forces such as bumps, vibrations, and airflow impacts during driving, the connection between the sealing strip latch 5 and the inner panel 6 of the engine hood is not easily loosened, effectively preventing it from falling off.

[0025] Foam adhesive 201 has good elasticity and cushioning properties. One end of foam adhesive 201 connects to the front bumper 3 and the upper beam trim panel 4 of the radiator, while the other end connects to solid adhesive 202, providing initial sealing and cushioning, filling gaps, and reducing the entry of air and dust. Foam adhesive 201 is adhered to the inner panel 6 of the engine hood via adhesive backing. Foam adhesive 201 also has a certain sound insulation effect, reducing the transmission of engine compartment noise to the outside of the vehicle. Solid adhesive 202 further enhances the sealing effect, preventing rainwater, dust, etc., from entering the engine compartment. First solid adhesive 203 connects to and adheres to the inner panel 6 of the engine hood, better sealing the inner panel 6. Second solid adhesive 204 is an integrally molded structure with the first solid adhesive 203. The arc-shaped structure 205 on the second solid adhesive 204 allows for a larger contact area with the outer panel 1 of the engine hood, achieving a better sealing effect on the outer panel 1. The synergistic effect of foam adhesive 201 and solid adhesive 202 can eliminate noise generated by the air at the front edge of the car hood.

[0026] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A sealing structure for an automobile engine hood, comprising an outer hood panel (1), a front bumper (3), a water tank upper beam decorative panel (4), and an inner hood panel (6), characterized in that: The car hood is connected to a sealing mechanism (2); the sealing mechanism (2) includes foam adhesive (201), one end of which is connected to the front bumper (3) and the water tank upper beam decorative panel (4), and the other end of which is connected to a solid adhesive (202), one side of which is connected to the outer panel of the engine hood (1), and one end of which is connected to the inner panel of the engine hood (6).

2. A sealing structure for an automobile engine compartment hood according to claim 1, characterized in that: A sealing strip buckle (5) is connected to the solid adhesive (202), and a first groove is provided on the inner plate (6) of the engine cover to cooperate with the sealing strip buckle (5). The sealing strip buckle (5) cooperates with the first groove.

3. A sealing structure for an automobile engine compartment hood according to claim 2, characterized in that: The sealing strip latch (5) includes a first sealing plate (501), which is connected to the sealing adhesive (202). The first sealing plate (501) is connected to the two sides of one end of the first sealing plate (501) and the first connecting plate (502) is engaged in the first groove.

4. A sealing structure for an automobile engine compartment hood according to claim 1, characterized in that: The solid adhesive (202) includes a first solid adhesive (203), one end of which is bent into a second solid adhesive (204), the cross section of which is an arc-shaped structure (205), and the arc-shaped structure (205) is attached to the outer panel (1) of the engine cover.

5. A sealing structure for an automobile engine compartment hood according to claim 1, characterized in that: The cross-section of the foam adhesive (201) is a semi-circular structure.

6. A sealing structure for an automobile engine compartment hood according to claim 3, characterized in that: The angle between the first sealing plate (501) and the first connecting plate (502) is between 30 degrees and 45 degrees.

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