WO2024055790A1

WO2024055790A1 - Automotive trim and manufacturing method therefor

Info

Publication number: WO2024055790A1
Application number: PCT/CN2023/112794
Authority: WO
Inventors: 胡想明; 马志国; 皇甫乐晓; 胡磊; 毕愿杰
Original assignee: 宁波信泰机械有限公司
Priority date: 2022-09-15
Filing date: 2023-08-14
Publication date: 2024-03-21
Also published as: CN115476779A

Abstract

An automotive trim, comprising: a trim main body part (1A) and an optical filtering window part (1B). The optical filtering window part (1B) can be used for transmitting light of a preset wave band and filtering light of other wave bands; when a lidar (2) is integrated on the inner side of the automotive trim, the optical filtering window part (1B) directly faces the lidar (2); the optical filtering window part (1B) and the trim main body part (1A) are integrally formed by insert molding, and the optical filtering window part (1B) is seamlessly embedded in the trim main body part (1A); the material of the trim main body part (1A) is opaque plastic; the optical filtering window part (1B) comprises optical filtering substrates (10), hardened layers (11), and anti-reflection layers (12); the hardened layers (11) cover the optical filtering substrates (10), and the anti-reflection layers (12) cover the hardened layers (11); the material of the optical filtering substrates (10) is optical filtering plastic; the light of the preset wave band can sequentially pass through the optical filtering substrates (10), the hardened layers (11), and the anti-reflection layers (12) from outside to inside, and can sequentially pass through the anti-reflection layers (12), the hardened layers (11), and the optical filtering substrates (10) from inside to outside. The automotive trim meets optical filtering requirements, and is low in cost. The present invention further comprises a manufacturing method for an automotive trim, and an automotive trim.

Description

Automobile decorative parts and manufacturing method of automobile decorative parts

Technical field

The present invention relates to the technical field of automobile parts, and in particular to an automobile decoration part and a manufacturing method of the automobile decoration part.

Background technique

LiDAR can measure distance, orientation, speed, altitude, etc. It is becoming more and more common to integrate LiDAR on automobile trim parts.

The traditional way to integrate lidar on car trims is to open through holes in the car trim. The lidar cover of the lidar itself has a light filtering function to ensure that light in a specific band can pass through the lidar cover and intercept other bands. of light. The lidar cover faces the through hole on the car trim to prevent the car trim from affecting the normal operation of the lidar. However, in actual use, there are gaps and surface differences between the lidar and the surrounding car trim parts, which affects the car. The aesthetics of the trim.

In order to solve the above-mentioned gap and surface difference problems, a solution was derived to seamlessly integrate lidar into automobile trim parts. Lidar is seamlessly integrated into automobile trim parts. It is necessary to ensure that the automobile trim parts have a light filtering function so as not to affect the normal operation of the lidar. However, the area where lidar needs to have a light filtering function is much smaller than the overall area of the automobile trim parts. , if the entire car trim is made of light filter material, the raw materials will be expensive and the cost will be high.

technical problem

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose an automobile trim part and a manufacturing method of the automobile trim part that not only meet the light filtering requirements but are also low-cost.

Technical solutions

The technical solution adopted by the present invention to solve the technical problem is to propose an automobile trim part, which includes:

The main part of the decoration part and the filter window part; the filter window part can transmit the light of the preset waveband and filter the light of other wavebands; when the lidar is integrated inside the automobile decoration part, the filter window part The optical window is facing the lidar; wherein,

The filter window part and the main part of the decoration part are integrally insert-molded, and the filter window part is seamlessly embedded in the main part of the decoration part;

The material of the main body of the ornament is opaque plastic, the filter window portion includes a filter substrate, a hardened layer and an anti-reflection layer, the hardened layer is covered on the filter substrate, and the anti-reflection layer is covered on the hardened layer; the material of the filter substrate is filter plastic; the light of the preset wavelength band can pass through the filter substrate, the hardened layer and the anti-reflection layer in sequence from outside to inside, and can pass through the anti-reflection layer, the hardened layer and the filter substrate in sequence from inside to outside.

Further, the circumferential boundary line of the filter window portion is covered by the main body portion of the trim.

Further, a support frame extends from the filter base to the inside of the main body of the ornament, and the support frame and the filter base are provided integrally;

Or a support frame is fixedly connected to the inner side of the main part of the ornament, and the support frame and the filter base are arranged separately;

The support frame can be used for positioning and/or fixed installation of the lidar.

Further, the support frame is provided with at least two positioning protrusions and at least two fixing holes, respectively used for positioning and fixing the lidar.

Furthermore, the top of the positioning protrusion has a guide cone surface, and the cross-sectional area of the guide cone surface gradually increases from top to bottom.

Furthermore, the filter window part further includes a heating layer, and the heating layer is disposed on the hardened layer.

Further, the preset wavelength band of light is light with a wavelength band of 905±20 nanometers and/or 1350±20 nanometers.

The technical solution adopted by the present invention to solve the technical problem is to propose a manufacturing method of automobile trim parts, which is applied to the above-mentioned automobile trim parts and includes the steps:

Spray or dip-coat the hardened layer on the filter substrate;

Plating the anti-reflection layer on the hardened layer;

The filter base, the hardening layer and the anti-reflection layer are used as inserts, arranged in a mold used to form the main part of the decorative part, and are integrally injection molded with the main part of the decorative part.

The main part of the decoration part and the filter window part; the filter window part and the main part of the decoration part are integrally insert-molded, and the filter window part is seamlessly embedded in the main part of the decoration part;

A mounting frame and a lidar integrated on the main body of the trim. The mounting frame is fixedly connected to the main body of the trim. The laser radar is installed on the mounting frame and is fixedly connected to the mounting frame. ;The lidar is facing the filter window;

Wherein, the main part of the ornament is made of opaque plastic, the filter window part includes a filter base, a hardened layer and an anti-reflection layer, the hardened layer covers the filter base, and the anti-reflection layer Covered on the hardened layer; the filter base is made of filter plastic; the filter window allows light in a preset waveband to pass through and filters light in other wavebands.

Further, the mounting frame is provided with a transverse support plate, the transverse support plate is provided with a through hole, the transverse support plate supports the laser radar, and the laser radar is provided with a through hole corresponding to the through hole. The adjustable screw passes through the through hole and is screwed into the threaded hole.

beneficial effects

Compared with the prior art, the present invention at least has the following beneficial effects:

In the present invention, during actual use of the automotive trim, only a local area of the filter window has filtering requirements, while other areas have no filtering requirements. By making the filter base in the filter window part made of filter plastic, and the main part of the trim part using opaque plastic, it not only meets the local filtering needs of the filter window part, but also uses non-transparent plastic in the main part of the trim part. Filter plastic ensures that there is no waste of filter plastic, thereby reducing the cost of automotive trim parts while meeting usage requirements, because the price of filter plastic is much more expensive than ordinary plastic. The filter plastic, hardened layer and anti-reflection layer of this automobile trim are all concentrated in the local area of the filter window, and the area of the local area of the filter window is much smaller than the area of the main body of the trim, so the coating The area is small and the cost is low. The filter plastic itself has a light filtering effect, and does not need to be covered with filter paint on the filter base. Moreover, after the filter window part and the main part of the decorative part are integrally insert-molded, no other processing steps are required. Automotive decoration The structure of the parts is simple, which can simplify the structure of the mold used to form automobile trim parts.

Description of drawings

Figure 1 is a manufacturing flow chart of automobile trim parts according to Embodiment 1;

Figure 2 is a schematic cross-sectional view of an automobile trim part according to Embodiment 1;

Figure 3 is a schematic cross-sectional view of the automobile trim part in Embodiment 2;

Figure 4 is a manufacturing flow chart of automobile trim parts in Embodiment 3;

Figure 5 is a schematic cross-sectional view of the automobile trim part in Embodiment 3;

Figure 6 is a schematic cross-sectional view of another position of the automotive trim in Embodiment 3;

Figure 7 is a schematic cross-sectional view of an automobile trim part in Embodiment 4.

In the picture:

1A. Main part of the trim; 1B. Filter window part; 1C. Support frame; 1D. Installation frame; 10. Filter base; 11. Hardened layer; 12. Anti-reflection layer; 13. Heating layer; 14. Positioning protrusion Column; 141, guide cone; 15, fixed hole; 16, transverse support plate; 161, through hole;

2. Lidar; 20. Threaded hole;

3. Adjustable screws.

Best Mode of Carrying Out the Invention Embodiments of the invention

The following are specific embodiments of the present invention combined with the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiment of the present invention are only used to explain the relationship between components in a specific posture (as shown in the drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, descriptions such as "first", "second", "a", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the indicated technical features. quantity. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

In the present invention, unless otherwise clearly stated and limited, the terms "connection", "fixing", etc. should be understood in a broad sense. For example, "fixing" can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on what a person of ordinary skill in the art can implement. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions is possible. It does not exist and is not within the protection scope required by the present invention.

Example 1:

As shown in FIGS. 1 and 2 , an automobile decoration part includes: a main part of the decoration part 1A, a filter window part 1B, and a lidar 2 .

The main body part 1A of the decoration and the filter window part 1B; the filter window part 1B can transmit the light of the preset waveband and filter the light of other wavebands. In this embodiment, the light of the preset waveband can be Not limited to light in the wavelength band 905±20 nm and/or 1350±20 nm. It should be explained that during actual use, there is a loss of light, and it is difficult for the filter window part 1B to transmit 100% of the light in the preset band, and it is difficult to ensure that the light of other wavebands can be 100% transmitted. Filtered. Generally, it is required that the transmittance of the filter window part 1B for the light of the preset wavelength band is guaranteed to be above 5%, and the transmittance of the filter window part 1B for the light of other wavebands is required to be guaranteed to be below 5%. That’s it.

When the lidar 2 is integrated into the inside of the automobile trim, the filter window portion 1B is facing the lidar 2; when the lidar 2 is integrated, the lidar 2 cover of the lidar 2 itself can be eliminated, because The filter window part 1B meets the filtering requirements of the laser radar 2 . When the lidar 2 is supplied, the lidar 2 cover can be eliminated to reduce supply costs.

Wherein, the filter window part 1B and the trim main part 1A are integrally insert-molded, and the filter window part 1B is seamlessly embedded in the trim main part 1A. The circumferential boundary line of the filter window portion 1B is covered by the trim main body portion 1A. The area of the main part of the trim part 1A is much larger than the area of the filter window part 1B, because the area required for the laser radar 2 to have a light filtering function is smaller. The filter window part 1B is integrated with the main part of the trim part 1A. During injection molding, in order to ensure its light filtering performance, a series of plating processes are required. However, the main part 1A of the decorative part has no filtering requirements, so there is no need to perform a series of plating processes.

The main body part 1A of the decorative part is made of opaque plastic, such as opaque PC or opaque PMMA. The filter window part 1B includes a filter base 10, a hardened layer 11 and an anti-reflection layer 12. The hardened layer 11 covers the filter base 10, and the anti-reflective layer 12 covers the hardened layer 11. Above; the material of the filter base 10 is filter plastic; the light in the preset wavelength band can pass through the filter base 10, the hardened layer 11 and the anti-reflection layer 12 in sequence from the outside to the inside, and can pass through in sequence from the inside to the outside. Through the anti-reflection layer 12 , hardening layer 11 and filter base 10 . Since the filter plastic itself has a light filtering effect, there is no need to cover the filter base 10 with filter paint, and no other processing is required after the filter window portion 1B and the trim main portion 1A are integrally insert-molded. The process, the structure of the automobile trim parts is simple, which can simplify the structure of the mold used to form the automobile trim parts.

The hardened layer 11 is plated on the filter base 10, and the anti-reflection layer 12 covers the hardened layer 11. The hardened layer 11 can enhance the strength of the filter base 10 to ensure that the anti-reflection layer can be 12 is attached. The anti-reflection layer 12 is used to increase the transmittance of light in the preset wavelength band. If it is not covered with the hardened layer 11, it will affect the electroplating of the anti-reflection layer 12 and affect its adhesion effect. After the hardening process of the hardened layer 11 is performed on the filter substrate 10, it has sufficient hardness to meet the weather resistance requirements. The hardened layer 11 can be HC; the anti-reflection layer 12 can increase the transmittance of light in the preset wavelength band.

In this embodiment, a support frame 1C extends from the filter base 10 toward the inner side of the trim body 1A, and the support frame 1C is integrally arranged with the filter base 10. The lidar 2 supports and Installed and fixed on the supporting frame 1C. In the actual molding process, the filter base 10 (including the supporting frame 1C) is first injection molded; then the filter base 10 is partially plated with a hardened layer 11; then an anti-reflection layer 12 is plated on the hardened layer 11; and finally the tape is The filter base 10 with the hardened layer 11 and the anti-reflection layer 12 is placed as an insert into a mold for molding the main part of the decorative part 1A, and is integrally injection molded.

The filter plastic, hardened layer 11 and anti-reflection layer 12 of this automobile trim are all concentrated in the local area of the filter window 1B, and the area of the local area of the filter window 1B is smaller than the area of the main body 1A of the trim. Much more, so the plating area is small and the cost is low.

Among them, the support frame 1C is provided with at least two positioning bosses 14 and at least two fixing holes 15. The positioning bosses 14 are used to position the lidar 2; the fixing holes 15 are provided with internal threads for fixing screws. The connection is used to fix the lidar 2. And the top of the positioning boss 14 has a guide cone surface 141. The cross-sectional area of the guide cone surface 141 gradually increases from top to bottom. When the laser radar 2 is installed on the support frame 1C, the guide cone surface 141 It is convenient for the installation of lidar 2. The position does not need to be too precise, making it easy to operate.

Example 2:

As shown in Figure 3, on the basis of the automobile decoration part in Embodiment 1, in the automobile decoration part of this embodiment, the filter window part 1B also includes a heating layer 13, and the heating layer 13 covers the hardened layer 11, between the hardened layer 11 and the anti-reflection layer 12. During the manufacturing process, after the hardened layer 11 is covered on the filter substrate 10, the heating layer 13 and the anti-reflection layer 12 are then covered to ensure the adhesion strength of the heating layer 13 and the anti-reflection layer 12. After the heating layer 13 is provided, the automobile trim can be heated to provide defrosting and defogging functions.

Embodiment three:

As shown in Figures 4 to 6, it is the optimal embodiment of the present invention. Compared with Embodiment 1, in this embodiment, the mounting frame 1D and the main part of the decorative part 1A are used to support, position and fix the laser radar 2 It is provided separately from the filter window part 1B. In this way, the structure of the mounting frame 1D can be made relatively complicated, because the mounting frame 1D is not integrally formed with the main part of the decorative part 1A, and the mold structure of the main part of the decorative part 1A can be simplified, and no complicated structure is required for positioning and fixing. Install skeleton 1D.

Specifically, the automobile decoration parts of this embodiment include:

The main part of the decoration part 1A and the filter window part 1B; the filter window part 1B and the main part of the decoration part 1A are integrally insert-molded, and the filter window part 1B is seamlessly embedded in the main part of the decoration part. Part 1A;

The mounting frame 1D and the laser radar 2 are integrated on the main body of the trim 1A. The mounting frame 1D is fixedly connected to the main body of the trim 1A. Specifically, the main body of the trim 1A is fixed on the mounting surface through structural adhesive. On the skeleton 1D. The lidar 2 is installed on the mounting frame 1D and is fixedly connected to the mounting frame 1D. The lidar 2 faces the filter window portion 1B. A transverse support plate 16 is provided on the mounting frame 1D. The transverse support plate 16 is provided with a through hole 161. The transverse support plate 16 supports the laser radar 2, and the laser radar 2 is provided with a through hole 161. The through hole 161 corresponds to the threaded hole 20, and the adjustable screw 3 passes through the through hole 161 and is screwed into the threaded hole 20. During the actual installation process, the Z-direction (i.e. height direction) installation error of the laser radar 2 installed on the transverse support plate 16 is absorbed by the adjustable screws 3 .

Wherein, the main part 1A of the decorative part is made of opaque plastic, specifically opaque PC or opaque PMMA. The filter window part 1B includes a filter base 10, a hardened layer 11 and an anti-reflection layer 12. The hardened layer 11 covers the filter base 10, and the anti-reflective layer 12 covers the hardened layer 11. Above; the filter base 10 is made of filter plastic; the filter window portion 1B can transmit light in a preset wavelength band and filter light in other wavelength bands. The structure of the filter window portion 1B is the same as in the embodiment , which will not be described in detail here.

Embodiment 4:

As shown in Figure 7, on the basis of the automobile decoration in the third embodiment, in the automobile decoration of this embodiment, the filter window part 1B also includes a heating layer 13, and the heating layer 13 covers the hardened layer 11, between the hardened layer 11 and the anti-reflection layer 12. In the same way, the heating layer 13 can heat the automobile trim parts to provide defrosting and defogging functions.

From a comprehensive perspective of Embodiment 1 to Embodiment 4, during actual use of the automotive trim, only a local area of the filter window portion 1B has light filtering requirements, while other areas have no light filtering requirements. By making the filter base 10 in the filter window part 1B made of filter plastic, while the main part of the trim part 1A is made of opaque plastic, it not only meets the local filtering needs of the filter window part 1B, but also improves the quality of the trim part. The main body 1A is made of non-filter plastic to ensure that no filter plastic is wasted, thereby reducing the cost of automotive trim while meeting the usage requirements, because the price of filter plastic is much more expensive than ordinary plastic. The filter plastic, hardened layer 11 and anti-reflection layer 12 of this automobile trim are all concentrated in the local area of the filter window 1B, and the area of the local area of the filter window 1B is smaller than the area of the main body 1A of the trim. Much more, so the plating area is small and the cost is low.

Embodiment five:

The manufacturing method of the automobile trim parts of Embodiment 1 to Embodiment 4 at least includes the following steps:

The first step: spray or dip-coat the hardened layer 11 on the filter substrate 10;

Step 2: Plate the anti-reflection layer 12 on the hardened layer 11;

Step 3: The filter base 10, the hardened layer 11 and the anti-reflection layer 12 are used as inserts, placed in the mold used to form the main part of the decorative part 1A, and integrally injection molded with the main part of the decorative part 1A. .

After the integral injection molding, the laser radar 2 is seamlessly integrated into the automobile trim, and the laser radar 2 faces the filter window portion 1B. During the entire process, the automotive trim does not require a back coating process.

Claims

An automobile decorative part, which is characterized in that it includes:

The main part of the decoration part and the filter window part; the filter window part can transmit the light of the preset waveband and filter the light of other wavebands; when the lidar is integrated inside the automobile decoration part, the filter window part The optical window is facing the lidar; wherein,

The filter window part and the main part of the decoration part are integrally insert-molded, and the filter window part is seamlessly embedded in the main part of the decoration part;

The main part of the ornament is made of opaque plastic. The filter window part includes a filter base, a hardened layer and an anti-reflection layer. The hardened layer covers the filter base, and the anti-reflection layer covers the filter base. On the hardened layer; the filter base is made of filter plastic; the light in the preset wavelength band can pass through the filter base, the hardened layer and the anti-reflection layer in sequence from the outside to the inside, and can pass through the filter base, the hardened layer and the anti-reflection layer in sequence from the inside to the outside. Through the anti-reflection layer, hardening layer and filter matrix.
The automobile decoration part according to claim 1, characterized in that the circumferential boundary line of the filter window part is covered by the main part of the decoration part.
The automobile decoration part according to claim 1, characterized in that, a support frame extends from the filter base toward the inner side of the main part of the decoration part, and the support frame and the filter base body are provided integrally;

Or a support frame is fixedly connected to the inner side of the main part of the ornament, and the support frame and the filter base are arranged separately;

The support frame can be used for positioning and/or fixed installation of the lidar.
The automobile trim part according to claim 3, characterized in that the support frame is provided with at least two positioning protrusions and at least two fixing holes for positioning and fixing the lidar respectively.
The automobile trim part according to claim 4, characterized in that the top of the positioning protrusion has a guide cone surface, and the cross-sectional area of the guide cone surface gradually increases from top to bottom.
The automobile trim part according to claim 1, characterized in that the filter window part further includes a heating layer, and the heating layer is disposed on the hardened layer.
The automobile decoration part according to claim 1, characterized in that the light in the preset wavelength band is light with a wavelength band of 905±20 nanometers and/or 1350±20 nanometers.
A manufacturing method for automobile trim parts, applied to the automobile trim parts according to any one of claims 1 to 7, characterized in that it includes the steps:

Spray or dip-coat the hardened layer on the filter substrate;

Plating the anti-reflection layer on the hardened layer;

The filter base, the hardened layer and the anti-reflection layer are used as inserts, arranged in a mold used to form the main part of the decorative part, and are integrally injection molded with the main part of the decorative part.
An automobile decorative part, which is characterized in that it includes:

The main part of the decorative part and the filter window part; the filter window part and the main part of the decorative part are integrally insert-molded, and the filter window part is seamlessly embedded in the main part of the decorative part;

A mounting frame and a lidar integrated on the main body of the trim. The mounting frame is fixedly connected to the main body of the trim. The laser radar is installed on the mounting frame and is fixedly connected to the mounting frame. ;The lidar is facing the filter window;

Wherein, the main part of the ornament is made of opaque plastic, the filter window part includes a filter base, a hardened layer and an anti-reflection layer, the hardened layer covers the filter base, and the anti-reflection layer Covered on the hardened layer; the filter base is made of filter plastic; the filter window allows light in a preset waveband to pass through and filters light in other wavebands.
The automobile trim part according to claim 9, characterized in that the mounting frame is provided with a transverse support plate, the transverse support plate is provided with a through hole, the transverse support plate supports the laser radar, and the The lidar is provided with a threaded hole corresponding to the through hole, and an adjustable screw passes through the through hole and is screwed into the threaded hole.