Buckle structure of sound insulation rubber block

Abstract

The utility model belongs to the technical field of automobile body structure design, and particularly relates to a sound insulation rubber block buckle structure. A sound insulation rubber block buckle structure is arranged in an automobile body cavity and comprises a framework, a buckle and a foaming structure connected with the buckle are arranged on the framework, and the buckle is connected with the automobile body cavity. After the foaming filling plate is foamed, the mounting hole can be blocked, so that the air tightness and water tightness of the whole vehicle are ensured; the situation that the installation hole cannot be completely sealed due to the fact that the buckle blocks the foaming direction is avoided, the airtight and watertight effects of an automobile are better, and the sound insulation effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of automotive body structure design technology. Specifically, this utility model relates to a sound insulation rubber block snap-fit ​​structure. Background Technology

[0002] In automotive body design, sheet metal supports and cavity partitions are key components for improving body rigidity and NVH (noise, vibration, and harshness) performance. When the body structure is limited and it is impossible to seal cavities between the exterior and interior of the vehicle using sheet metal structures (mainly due to the limitations of sheet metal stamping and welding processes), sound-insulating rubber blocks are needed to seal these areas. (See attached diagram in the instruction manual.) Figure 5 At the sharp corner of the A-pillar on the side.

[0003] EVA foam sealing achieves a seal between the interior and exterior of the vehicle. However, the snap-fit ​​structure can obstruct the direction of foaming, preventing the snap-fit ​​mounting holes from sealing completely, thus affecting the sealing effect and consequently the vehicle's airtightness and watertightness.

[0004] Chinese Patent (Publication No.: 102582534A) discloses a pre-formed sound insulation block and its installation method, applied in automotive cavities. The block includes a bracket body, mounting clips, and a tapered through-hole for a water guide pipe. The bracket body has a shape corresponding to the cross-section of the automotive cavity. One or more mounting clips are disposed on the bracket body to fix the sound insulation block to the vehicle's sheet metal. The tapered through-hole for the water guide pipe is located in the middle of the bracket body for the water guide pipe to pass through. However, the mounting clips, used for fixing, can obstruct the direction of the foam sealing, resulting in poor sealing performance. Utility Model Content

[0005] This utility model is designed to solve the above-mentioned problems and aims to provide a sound insulation block buckle structure that can improve the sealing effect of the buckle and the mounting hole. To achieve the above objective, the technical solution adopted by this utility model is as follows: a sound insulation block buckle structure is installed in the cavity of a car body, including a frame, on which buckles and foam structures connected to the buckles are provided, and the buckles are connected to the car body cavity.

[0006] The buckle includes a base plate, a support plate is provided on the base plate, an elastic limiting plate is provided on the support plate, an installation hole is provided in the car body cavity, and the elastic limiting plate is located in the installation hole and abuts against the installation hole.

[0007] The foam structure includes a first foam board, which is attached to the skeleton. The first foam board is provided with a foam filling board, which is sleeved on the base plate.

[0008] A partition is provided at one end of the foamed filling board, and the partition abuts against the support plate.

[0009] The support plate is provided with a first baffle and a second baffle at both ends, and the foam filling plate and the partition are provided with foam limiting plates, which are located between the first baffle and the second baffle.

[0010] The skeleton includes a skeleton body, on which a third baffle is provided, and a limiting hole is provided on the first foaming plate, the limiting hole cooperating with the third baffle.

[0011] The frame body is provided with a fourth baffle, which abuts against the foam filling plate.

[0012] The frame and buckles are integral injection molded structures made of PA66 plastic.

[0013] The technical advantages of this invention are as follows: the frame and buckle are integrally injection molded into a single unit, and the foam structure is an EVA structure, embedded into the frame through secondary injection molding. Through the cooperation of the first foam board and the frame, the foamed first board can absorb and attenuate sound more effectively, reducing noise transmission within the car body cavity and achieving sound insulation and noise reduction. Simultaneously, the first foam board, in cooperation with the frame, also enhances the structural strength of the entire sound insulation block. The foam filler board, fitted onto the base plate, fills the gap between the frame and the buckle, enhancing the tightness of the connection between the buckle and the frame, further absorbing and blocking sound, and improving the sound insulation effect. In addition, it can also buffer external impacts on the buckle to a certain extent. After foaming, the foam filler board can seal the mounting holes, thus ensuring the airtightness and watertightness of the entire vehicle. The buckle will not obstruct the direction of foaming, preventing the mounting holes from being completely sealed and affecting the airtightness and watertightness of the car. Attached Figure Description

[0014] This manual includes the following figures, which illustrate the following:

[0015] Figure 1 This is an overall structural diagram of a sound insulation rubber block snap-fit ​​structure according to this utility model;

[0016] Figure 2 This utility model relates to a sound insulation rubber block snap-fit ​​structure frame and snap-fit ​​structure diagram.

[0017] Figure 3 This utility model relates to a sound insulation rubber block buckle structure frame and a back view of the buckle;

[0018] Figure 4 This is an exploded view of a sound-insulating rubber block snap-fit ​​structure according to this utility model;

[0019] Figure 5 This is a schematic diagram of the installation position of a sound insulation rubber block buckle structure according to this utility model.

[0020] The markings in the diagram are as follows: 1. Frame; 101. Frame body; 102. Third baffle; 103. Fourth baffle; 2. Buckle; 201. Base plate; 202. Support plate; 203. Elastic limiting plate; 3. Foam structure; 301. First foam board; 302. Foam filling board; 303. Partition; 304. Foam limiting plate; 4. Mounting hole; 5. First baffle; 6. Second baffle; 7. Limiting hole. Detailed Implementation

[0021] 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.

[0022] like Figures 1-4 As shown, a sound-insulating rubber block clip structure is installed inside a car body cavity. It includes a frame 1, clips 2 and a foam structure 3 connected to the clips 2, and the clips 2 are connected to the car body cavity. The frame 1 is used to block the through-type structural cavities between the car body sheet metals. During driving, the car body cavities are prone to standing wave effects due to airflow or vibration, causing low-frequency booming noise. The frame 1 and foam structure 3 serve to isolate the car body cavities, dividing long cavities into short cavities, disrupting the conditions for standing wave formation, and reducing noise. The clips 2 are used to connect to the car body cavity, fixing the entire sound-insulating rubber block. Simultaneously, the foam structure 3, after foaming, can seal the cavity, improving the overall airtightness of the vehicle and enhancing the structural strength of the car body. The rubber blocks fill the cavity, reducing the transmission of sound (wind noise, road noise) during vehicle operation and improving the comfort of drivers and passengers; they also prevent airflow within the cavity, enhancing the vehicle body's sealing performance and reducing the entry of external dust and moisture into the passenger compartment; and they strengthen the vehicle body structure, increasing its rigidity to a certain extent, thus reducing noise and vibration during operation. The frame 1 and the clip 2 are integrally injection molded as a single unit, and the foam structure 3 is an EVA structure, embedded into the frame 1 through secondary injection molding.

[0023] The buckle 2 includes a base plate 201, a support plate 202 on the base plate 201, and an elastic limiting plate 203 on the support plate 202. An installation hole 4 is provided inside the car body cavity, and the elastic limiting plate 203 is located within the installation hole 4 and abuts against it. The base plate 201 is connected to the frame 1. Two support plates 202 are symmetrically arranged on the base plate 201, and the elastic limiting plate 203 is connected to the end of each support plate 202. Through its own elastic deformation, the elastic limiting plate 203 is embedded into the installation hole 4 in the car body cavity and abuts against it, achieving a tight connection between the entire structure and the car body cavity. This prevents the entire structure from detaching due to vibration or other factors during vehicle operation, and also buffers external impacts on the entire structure to a certain extent, extending its service life.

[0024] The foam structure 3 includes a first foam board 301, which is attached to the frame 1. The first foam board 301 is fitted with a foam filler board 302, which is then sleeved on the base plate 201. The first foam board 301 and the frame 1 serve as the main sound insulation components. After foaming, the first foam board 301 can absorb and attenuate more sound, reducing noise transmission within the vehicle body cavity and thus playing a role in sound insulation and noise reduction. Simultaneously, the first foam board 301, in conjunction with the frame 1, also enhances the structural strength of the entire sound insulation block. The foam filler board 302, sleeved on the base plate 201, fills the gap between the frame 1 and the clips 2, enhancing the tightness of the connection between the clips 2 and the frame 1, further absorbing and blocking sound, and improving the sound insulation effect. Furthermore, it can buffer external impacts on the clips 2 to a certain extent. After foaming, the foam filler board 302 can seal the mounting holes 4, thereby ensuring the airtightness and watertightness of the entire vehicle. The mounting hole 4 will not be completely sealed due to the clip 2 blocking the direction of foaming, thus affecting the airtightness and watertightness of the car.

[0025] A partition 303 is provided at one end of the foam filling board 302, and the partition 303 abuts against the support plate 202. The partition 303 and the first foam board 301 are distributed on both sides of the buckle 2. After the partition 303 is foamed, it can improve the sealing effect between the buckle 2 and the mounting hole 4, further absorb and block sound, and improve the sound insulation effect; in addition, it can also buffer the impact force of the outside world on the buckle 2 to a certain extent and protect the buckle 2.

[0026] Both ends of the support plate 202 are provided with a first baffle 5 and a second baffle 6. Foaming limiting plates 304 are provided on both the foam filling plate 302 and the partition plate 303, positioned between the first baffle 5 and the second baffle 6. The first baffle 5 and the second baffle 6 on the support plate 202 restrict the foaming limiting plate 304, preventing displacement of the entire foam structure 3. Simultaneously, after the foam filling plate 302 foams, it improves the sealing effect between the buckle 2 and the mounting hole 4, further absorbing and blocking sound, and enhancing the sound insulation effect. Furthermore, it can buffer external impacts on the buckle 2 to a certain extent, protecting the buckle 2.

[0027] The frame 1 includes a frame body 101, on which a third baffle 102 is provided. A limiting hole 7 is provided on the first foam board 301, and the limiting hole 7 cooperates with the third baffle 102. The frame body 101 is mainly used for partitioning the vehicle body cavities, dividing long cavities into short cavities, disrupting the conditions for standing wave formation, and reducing noise. The cooperation between the limiting hole 7 and the third baffle 102 ensures a tight connection between the first foam board 301 and the frame body 101. After the first foam board 301 is foamed, the frame body 101 has a stronger structure, further absorbing and blocking sound, and improving the sound insulation effect.

[0028] A fourth baffle 103 is provided on the frame body 101, which abuts against the foam filling board 302. Two fourth baffles 103 are provided to limit and fix the foam filling board 302, enhance the connection stability between the foam filling board 302 and the frame 1, and at the same time, help to disperse the vibration and pressure transmitted from the outside during the sound insulation process, thereby improving the sound insulation effect.

[0029] The frame 1 and the clip 2 are integrally injection molded structures made of PA66 plastic. After being integrally injection molded from PA66 plastic, the frame 1 and clip 2 can withstand the complex vibrations and impacts experienced during vehicle operation. Thanks to the high strength of PA66, the injection-molded structure effectively resists these external forces, preventing deformation or breakage of the frame 1 or clip 2, ensuring the integrity and stability of the sound insulation block clip structure, and thus ensuring its normal sound insulation function.

[0030] The role and effect of the embodiments

[0031] The frame 1 and the clip 2 are integrally injection molded as a single unit. The foam structure 3 is an EVA structure, embedded into the frame 1 through secondary injection molding. The first foam board 301 cooperates with the frame 1. After foaming, the first foam board 301 can absorb and attenuate more sound, reducing noise transmission within the car body cavity and playing a role in sound insulation and noise reduction. Simultaneously, the first foam board 301, in cooperation with the frame 1, also enhances the structural strength of the entire sound insulation block. The foam filler board 302 is fitted onto the base plate 201, filling the gap between the frame 1 and the clip 2. This enhances the tightness of the connection between the clip 2 and the frame 1, further absorbing and blocking sound, improving the sound insulation effect. Furthermore, it can buffer external impacts on the clip 2 to a certain extent. After foaming, the foam filler board 302 can seal the mounting hole 4, thus ensuring the airtightness and watertightness of the entire vehicle. The clip 2 will not obstruct the direction of foaming, preventing the mounting hole 4 from being completely sealed and affecting the airtightness and watertightness of the car.

[0032] 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 sound-insulating rubber block snap-fit ​​structure, installed inside a car body cavity, characterized in that, It includes a frame (1), on which a buckle (2) and a foam structure (3) connected to the buckle (2) are provided, and the buckle (2) is connected to the body cavity.

2. The sound-insulating adhesive block snap-fit ​​structure according to claim 1, characterized in that: The buckle (2) includes a base plate (201), a support plate (202) is provided on the base plate (201), an elastic limiting plate (203) is provided on the support plate (202), an installation hole (4) is provided in the car body cavity, and the elastic limiting plate (203) is located in the installation hole (4) and abuts against the installation hole (4).

3. The sound insulation block snap-fit ​​structure according to claim 2, characterized in that: The foam structure (3) includes a first foam board (301), which is attached to the skeleton (1). The first foam board (301) is provided with a foam filling board (302), which is sleeved on the base plate (201).

4. The sound insulation block snap-fit ​​structure according to claim 3, characterized in that: One end of the foamed filling plate (302) is provided with a partition (303), which abuts against the support plate (202).

5. The sound-insulating adhesive block snap-fit ​​structure according to claim 4, characterized in that: The support plate (202) is provided with a first baffle (5) and a second baffle (6) at both ends. The foam filling plate (302) and the partition plate (303) are provided with foam limiting plates (304). The foam limiting plates (304) are located between the first baffle (5) and the second baffle (6).

6. The sound-insulating adhesive block snap-fit ​​structure according to claim 3, characterized in that: The skeleton (1) includes a skeleton body (101), a third baffle (102) is provided on the skeleton body (101), and a limiting hole (7) is provided on the first foam plate (301), the limiting hole (7) cooperates with the third baffle (102).

7. The sound-insulating adhesive block snap-fit ​​structure according to claim 6, characterized in that: A fourth baffle (103) is provided on the skeleton body (101), and the fourth baffle (103) abuts against the foam filling plate (302).

8. The sound-insulating adhesive block snap-fit ​​structure according to claim 1, characterized in that: The skeleton (1) and buckle (2) are integral injection molded structures made of PA66 plastic.

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