CN216968937U

CN216968937U - Automobile interior trim part provided with touch screen

Info

Publication number: CN216968937U
Application number: CN202122742306.2U
Authority: CN
Inventors: 吴新蕾
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-07-15
Anticipated expiration: 2031-11-10

Abstract

The technical scheme includes that the automotive interior part with the touch screen comprises an INS membrane, a plastic plate, a paint spraying shading layer and a touch switch film which are sequentially arranged from top to bottom, wherein the INS membrane comprises a PMMA acrylic layer, an ink printing light transmitting layer and an ABS transparent substrate layer which are compounded from top to bottom, the INS membrane and the top surface of the plastic plate are formed through in-mold injection molding, the bottom surface of the plastic plate is coated with the paint spraying shading layer, the paint spraying shading layer is laser engraved with light transmitting patterns, and the bottom surface of the paint spraying shading layer is connected with the touch switch film through adhesive glue. The touch screen button has the advantages of novel structure and high pattern precision on the surface of the touch screen button, and can be applied to interior trim parts with various shapes and provided with the touch screen in an automobile.

Description

Automobile interior trim part provided with touch screen

Technical Field

The invention relates to an automobile interior trim part, in particular to an automobile interior trim part with a touch screen.

Background

Intellectualization is the main melody developed in the automobile industry nowadays, consumers are no longer limited to the requirement of exquisite automobile appearance design, and the intelligent surface decoration design integrating functionality and decoration is more favored. In recent years, concept vehicle models of more and more host factories at home and abroad exhibit the design concept of designers on the future automotive interior cabins, and the future automotive interior cabins are developed towards the intelligent direction, particularly the overall vision, touch, interactive feedback and the like of interiors. Interior designs will turn from traditional decorative to smart decorative surfaces that combine functionality with decor.

Besides the texture, the touch and the formability of the traditional decorative material, the intelligent decorative surface can simultaneously have man-machine interaction functions such as photoelectric dynamic display, touch control, sound control and the like, and is a highly integrated decorative technology. The combination of the light transmission property and the decoration property of the material is the premise for realizing intelligent decoration. Therefore, the development of the interior intelligent surface decoration technology can be divided into three stages, the first stage realizes the integration of functions such as light-transmitting hard decoration materials (such as light-transmitting INS, light-transmitting IML, light-transmitting TOM and the like) and photoelectric display with control logic (such as light source breath lighting, in-mold decoration film with water flowing effect, real wood decoration and the like), the second stage realizes the integration of functions such as light-transmitting leather, light-transmitting fabric and the like of soft light-transmitting decoration materials and photoelectric display with control logic, and the third stage realizes the integration of multiple functions such as decorative material photoelectric display, intelligent control (such as gesture control, intelligent touch, sound control and the like).

The main reason is that the INS membrane pattern engraving accuracy is not sufficient, and the engraved pattern area is easy to deform during later processing, which causes key displacement during touch.

In order to improve the feel of the molded interior surface with the raw and hard plastics, various surface treatment processes are generally adopted for beautification, and the traditional processes are spraying, water transfer printing, silk-screen printing or pad printing and the like. However, with the environmental protection pressure and the improvement of quality pursuit of consumers, the film forming process of the INS process capable of reducing pollution is more and more widely applied to the interior trim of the vehicle. The INS process is mainly used for door plate decoration strips, center consoles, instrument panels and the like on vehicle interior decorations. The INS process, also known as IMF (In-mold Film), is to form the shape of the outer surface of a product by high pressure adsorption of a Film In a forming mold In advance, to place the Film In an injection mold of the product after trimming, and to perform injection molding together with a plastic In a molten state. As shown in fig. 1:

compared with the traditional spraying and watermarking process, the INS process has the advantages of environmental protection, realization of various pattern textures, metal and wood grain imitation effect, good product appearance and luxury.

The disadvantage of the INS process is that membranes are usually imported and are expensive. The conventional structure of the INS membrane is formed by combining a PMMA (acrylic) layer, an ink printing layer and an ABS substrate layer, as shown in fig. 2. Conventional INS membrane structures are suitable for most automotive interior trim panels.

In order to increase the effect of an atmosphere lamp, an ink printing layer in a film structure is provided with a light shielding layer and a pattern layer, as shown in fig. 3, at the moment, an ABS substrate layer is a semitransparent or transparent layer, and light can penetrate through the pattern layer and then penetrate out of a decorative panel to increase the atmosphere effect in a vehicle. Because the first step heating softening in the INS technology can produce the first step tensile to the diaphragm structure, the high pressure of second step adsorbs also can produce the tensile of second step, and decorative pattern layer and printing ink light shield layer in the diaphragm structure can be after stretching many times deformation displacement or produce the tear mark, and in the product that the shaping was come out at last, light throws out decorative pattern and has become the displacement or printing ink light shield layer has the light leak, leads to the product unqualified, and the disability rate is high, as shown in figure 4.

In order to solve the problems, the applicant develops a technical scheme and applies for a patent, wherein the application number is 201911227013.1, a first PMMA acrylic layer, a second printing ink pattern printing layer and a third layer are adopted to print an upper layer and a lower layer, the upper layer is a semitransparent or transparent layer, the lower layer is an opaque layer, the upper layer and the lower layer are formed by compounding or co-extrusion, and then the specific forming process comprises the following steps: heating and softening the INS membrane structure of the automobile interior; secondly, the diaphragm is formed by adsorption by a diaphragm forming machine; punching and cutting the formed diaphragm; positioning the cut formed diaphragm, and processing the light-tight layer of the third ABS base material layer of the formed diaphragm by utilizing laser engraving to form a light-tight pattern layer; fifthly, placing the formed membrane after the fine engraving into a mould; closing the mould and injection moulding; seventhly, taking out the molded product by a mechanical arm; and eighthly, obtaining qualified products.

Although the mode is greatly improved relative to the original mode, the defect still exists because the membrane needs to be customized and basically depends on import, the cost is high, the light-transmitting pattern on the membrane is finely carved on the membrane, the membrane still has the deformation condition in the later injection molding process, the precision requirement on all aspects is high, and the scrapped product is easy to generate. The light-transmitting pattern fine-engraving processing is processed on a semi-finished product, and the subsequent injection molding is also needed to easily cause the deformation of the pattern on the finished product.

Disclosure of Invention

In view of the above problems, the present invention is directed to provide an automotive interior part with a touch screen, which has a novel structure and a high pattern precision on the surface of a touch screen button, and can be applied to interior parts with touch screens of various shapes in an automobile.

The technical scheme includes that the automotive interior part with the touch screen comprises an INS membrane, a plastic plate, a paint spraying shading layer and a touch switch film which are sequentially arranged from top to bottom, wherein the INS membrane comprises a PMMA acrylic layer, an ink printing light transmitting layer and an ABS transparent substrate layer which are compounded from top to bottom, the INS membrane and the top surface of the plastic plate are formed through in-mold injection molding, the bottom surface of the plastic plate is coated with the paint spraying shading layer, the paint spraying shading layer is laser engraved with light transmitting patterns, and the bottom surface of the paint spraying shading layer is connected with the touch switch film through adhesive glue.

Preferably, the plastic plate is made of ABS or PC.

Preferably, the adhesive glue is a photo-adhesive glue.

Preferably, an LED light source is arranged in the touch switch film.

Preferably, the thickness of the PMMA acrylic layer is 2-4 mm.

Preferably, a transparent pattern with an angle, a bionic pattern or a three-dimensional pattern is arranged in the ink printing light transmitting layer.

Preferably, the top surface of the INS membrane is connected with a transparent plastic plate through double-color injection molding.

Compared with the traditional in-vehicle key structure, the touch switch has great advantages in various aspects such as space, use and design:

the weight is reduced, and the space is saved. The touch switch can integrate a large number of structures on a film, so that a large amount of space can be saved while the touch switch is light.

And high design freedom. The automobile touch switch replaces a physical key, so that the integration level of the product is higher, and the design is simpler.

And the appearance is beautiful. The panel pattern can be designed freely, the size and the shape of the key can be designed freely, the characters, the trademarks, the perspective windows and the like can be matched freely, and the appearance is attractive and fashionable, and the color is not faded and deformed.

And fourthly, the operation is convenient. The capacitive sensing touch switch does not need to press traditional physical keys, is convenient to operate, can be used even if being provided with gloves, is not influenced by changes of resistance of a dry and wet human body in the weather and the like, and is more convenient to use.

High durability. Theoretically, the touch switch does not have any mechanical part, can not wear and tear, and unlimited life reduces the later maintenance cost.

Sixthly, the waterproof and dustproof effects are achieved, and the stability is good. The sensing portion of which can be placed behind any insulating layer (typically plastic material spray-painted photo-etched or iml parts) and is easily made into a one-piece design that is sealed from the surrounding environment. The capacitive sensing touch switch can penetrate through an insulating material shell by about 3mm (glass, plastic and the like), and can accurately detect effective touch of a finger. And the sensitivity, stability, reliability and the like of the product are ensured not to be changed due to the change of environmental conditions or long-term use, and the waterproof and anti-interference performance is high.

Drawings

FIG. 1 is a flow diagram of a prior art INS process;

FIG. 2 is a diagram of a conventional INS membrane;

FIG. 3 is a diagram of a conventional INS diaphragm with a patterned layer and a light-shielding layer;

FIG. 4 is a schematic drawing of the film sheet stretch deformation after the first few steps of the prior INS process;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is an exploded view of FIG. 5;

FIG. 7 is a cross-sectional view of the structure of FIG. 5;

FIG. 8 is a schematic view of another exploded structure of the present invention;

FIG. 9 is a cross-sectional view of the structure of FIG. 8;

wherein: 1-an INS membrane; 11-PMMA acrylic layer; 12-printing ink printing a light-transmitting layer; 13-ABS transparent substrate layer; 2-plastic board; 3-spraying a light shielding layer; 4-touch switch membrane; 5-a light-transmitting pattern; 6-transparent plastic plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 5 to 7, the invention provides an automotive interior part provided with a touch screen, which comprises an INS membrane 1, a plastic plate 2, a paint-spraying light-shading layer 3 and a touch switch film 4 which are sequentially arranged from top to bottom, wherein the plastic plate 2 is made of ABS or PC, the INS membrane 1 comprises a PMMA acrylic layer 11, an ink-printing light-transmitting layer 12 and an ABS transparent substrate layer 13 which are compounded from top to bottom, the thickness of the PMMA acrylic layer 11 is 2-4mm, the ink-printing light-transmitting layer 12 is internally provided with a light-transmitting angular, bionic or three-dimensional basic pattern, the light-transmitting pattern 5 at the bottom is matched to form a combined aesthetic pattern under the irradiation of an LED light source, the top surfaces of the INS membrane 1 and the plastic plate 2 are formed by in-mold injection molding, the bottom surface of the plastic plate 2 is coated with the paint-spraying light-shading layer 3, the paint-spraying light-transmitting pattern 5 is laser engraved on the paint-shading layer 3, the bottom surface of the paint spraying shading layer 3 is connected with a touch switch film 4 through bonding glue such as photosynthetic glue, and an LED light source is arranged in the touch switch film 4.

The manufacturing process of the scheme is as follows: heating and softening the INS membrane structure of the automobile interior; secondly, the diaphragm is formed by adsorption by a diaphragm forming machine; punching and cutting the formed diaphragm; fourthly, positioning the cut formed membrane and putting the membrane into a mould; performing die assembly and injection molding on the die to obtain a plastic plate with the surface connected with the INS membrane; taking out the plastic plate with the INS membrane connected on the surface by the mechanical arm; seventhly, performing paint spraying treatment on the lower surface of the plastic plate to form a paint spraying shading layer; processing the light-transmitting pattern required by the paint-spraying shading layer by using laser fine engraving; ninthly, bonding the touch switch film on the bottom surface of the plastic board through the optical cement to finally obtain the required finished product.

In addition, as shown in fig. 8 and 9, the invention provides another automobile interior part provided with a touch screen, which comprises an INS membrane 1, a plastic plate 2, a paint-spraying light-shielding layer 3 and a touch switch film 4 which are sequentially arranged from top to bottom, wherein the INS membrane 1 comprises a PMMA acrylic layer 11, an ink-printing light-transmitting layer 12 and an ABS transparent substrate layer 13 which are compounded from top to bottom, the top surfaces of the INS membrane 1 and the plastic plate 2 are formed by in-mold injection molding, the bottom surface of the plastic plate 2 is coated with the paint-spraying light-shielding layer 3, the paint-spraying light-shielding layer 3 is laser engraved with a light-transmitting pattern 5, the bottom surface of the paint-spraying light-shielding layer 3 is connected with the touch switch film 4 through adhesive, and the top surface of the INS membrane 1 is connected with a transparent plastic plate 6 through double-color injection molding.

The manufacturing process of the scheme is as follows: firstly, heating and softening an INS membrane; secondly, performing adsorption molding on the INS membrane by using a membrane molding machine; punching and cutting the molded INS membrane; fourthly, positioning the cut molded INS membrane, and putting the INS membrane into a double-color injection mold; performing first injection molding, wherein one side of the bottom surface of the INS membrane is integrally molded with the molten plastic, and one side of the bottom surface of the INS membrane is attached to the front side surface of the inner layer plastic plate; rotating the back mold, performing secondary mold closing and injection molding on the double-color injection molding machine, wherein one side of the top surface of the INS membrane is integrally molded with the molten plastic, and one side of the top surface of the INS membrane is attached to the back side surface of the transparent plastic plate to form an integral structure of the transparent plastic plate, the INS membrane and the plastic plate and is taken out by a manipulator; seventhly, performing paint spraying treatment on the bottom surface of the plastic plate to form a paint spraying shading layer; processing the light-shielding layer of the spray paint into a required light-transmitting pattern by laser engraving; ninthly, bonding the touch switch film on the bottom surface of the plastic board through the optical cement to finally obtain the required finished product.

The step of engraving the light-transmitting pattern by the laser is placed after injection molding, so that the process of injection molding after the original pattern engraving is avoided, the situation that the pattern is easy to stretch or damage in the injection molding process is avoided, and the yield in the product manufacturing process is improved. According to the invention, through the improvement of the internal structure of the light-transmitting automobile interior trim part with the INS membrane structure, the accuracy of light-transmitting patterns is ensured, the high-quality yield of products is ensured, the touch switch film can be applied to the automobile interior trim part, and the accuracy of a touch area is ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a be provided with automotive interior spare of touch-sensitive screen which characterized in that: including INS diaphragm (1), plastic plate (2), the light shield layer (3) and the touch switch film (4) of spraying paint that from the top down arranged in proper order, INS diaphragm (1) includes PMMA ya keli layer (11), printing ink printing euphotic layer (12) and ABS transparent substrate layer (13) that top-down complex formed, INS diaphragm (1) and plastic plate (2) top surface are through mould injection moulding in, plastic plate (2) bottom surface coating has light shield layer (3) of spraying paint, light shield layer (3) laser engraving has light transmission pattern (5) of spraying paint, light shield layer (3) the underrun is connected with touch switch film (4) through adhesive.

2. The automotive interior provided with the touch screen according to claim 1, wherein: the plastic plate (2) is made of ABS or PC.

3. The automotive interior provided with the touch screen according to claim 1, wherein: the adhesive is a photo-adhesive.

4. The automotive interior part provided with the touch screen according to claim 1, wherein: and an LED light source is arranged in the touch switch film (4).

5. The automotive interior provided with the touch screen according to claim 1, wherein: the PMMA acrylic layer (11) has the thickness of 2-4 mm.

6. The automotive interior provided with the touch screen according to claim 1, wherein: and a transparent pattern with an angle, a bionic pattern or a three-dimensional pattern is arranged in the ink printing light transmitting layer (12).

7. The automotive interior provided with the touch screen according to claim 1, wherein: the top surface of the INS membrane (1) is connected with a transparent plastic plate (6) through double-color injection molding.