Pull type limo photochromic glass structure

Abstract

The utility model relates to the field of motor homes, and discloses a travel trailer photochromic glass structure which comprises a photochromic glass assembly, the photochromic glass assembly comprises an outer sheet PMMA (polymethyl methacrylate), an EVA (ethylene vinyl acetate) film, a PDLC (polymer dispersed liquid crystal) film and a metal film, the outer side wall of the PDLC film is fixedly connected with the EVA film, and the outer side wall of the EVA film is fixedly connected with the outer sheet PMMA; the structure is suitable for connection of PMMA (polymethyl methacrylate), EVA (ethylene-vinyl acetate) films, PDLC (polymer dispersed liquid crystal) films and metal films with different thicknesses, the universality is high, the inner PMMA, the EVA films, the PDLC films and the metal films adopt connection modes such as a laminating process, air extraction by a sealing sleeve, normal-temperature high-pressure air extraction in a high-pressure kettle, surface mounting overlapping extrusion and the like, and PDLC polymer dye liquid crystal type selection is adopted for the pull type limo photochromic glass; the model selection adopts an equal-thickness design with the section fabric thickness of 0.1 mm, the transparent state and the coloring state of the glass of the pull-type motor home are controlled by switching on and off, and the privacy function in the pull-type motor home is achieved.

Description

Technical Field

[0001] The utility model relates to the field of RVs, and more specifically to a variable-color glass structure for a towed RV. Background Art

[0002] In order to protect the privacy inside the vehicle, the towed RVs of current market models mostly adopt the method of adding folding curtains inside the glass. This structure of adding folding curtains inside the glass has high costs, low general assembly efficiency, and is not aesthetically pleasing.

[0003] The structure of using double-layer acrylic glass and folding curtains in the early market has problems such as complex general assembly structure, the glass cannot change from semi-transparent to opaque, and the folding curtains are cumbersome to use, which affect the aesthetics and simple operability. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a variable-color glass structure for a towed RV, which can solve the problems of complex structure, the glass cannot change from semi-transparent to opaque, and the folding curtains are cumbersome to use, which affect the aesthetics and simple operability.

[0005] To solve the above technical problems, according to one aspect of the utility model, more specifically, it is a variable-color glass structure for a towed RV, including a variable-color glass assembly; the variable-color glass assembly includes an outer PMMA sheet, an EVA film, a PDLC liquid crystal film, and a metal film. The outer side walls of the PDLC liquid crystal film are fixedly connected with EVA films, and the outer side walls of the EVA films are fixedly connected with the outer PMMA sheets.

[0006] Furthermore, a metal film is fixedly connected to the left side of the left outer PMMA sheet.

[0007] The beneficial effects of the variable-color glass structure for a towed RV of the utility model are as follows:

[0008] Adopt the hybrid mode of outer PMMA + EVA film + PDLC liquid crystal film + EVA film + inner PMMA + metal film, cancel the folding curtain assembly, and the weight of the trailer-type RV is reduced by about 1 kg. This structure is suitable for connecting PMMA, EVA film, PDLC liquid crystal film and metal film with different thicknesses, and has strong versatility. The inner and outer PMMA, EVA film, PDLC liquid crystal film and metal film adopt connection methods such as laminating process, air extraction by sealed sleeve, air extraction at normal temperature and high pressure in an autoclave, and overlapping extrusion during mounting. The variable-color glass of the trailer-type RV adopts the PDLC polymer dye liquid crystal selection (the selection cross-section is universal); the selection adopts an equal-thickness design with a cross-sectional thickness of 0.1 mm, and the transparency and coloring state of the trailer-type RV glass are controlled by power on and off, realizing the privacy function inside the trailer-type RV. The variable-color glass of the trailer-type RV adopts a metal film structure design. When the variable-color glass of the trailer-type RV is powered on, it becomes semi-transparent, and when it is powered off, it becomes atomized, which is convenient to operate and improves the aesthetics of the trailer-type RV. The variable-color glass of the trailer-type RV adopts an EVA film and metal film structure design, which can resist ultraviolet radiation, slow down the increase of the temperature inside the vehicle after being exposed to the sun, reflect energy, keep warm in winter and cool in summer. The inner and outer PMMA (4.0 mm), EVA film (0.76 mm), PDLC liquid crystal film (0.1 mm) and metal film (0.04 mm) adopt a universal structure design, and the matching scheme with peripheral related parts is mature and reliable, reducing the development and parts cost. The variable-color glass of the trailer-type RV cancels the folding curtain assembly, improves the general assembly efficiency of the trailer-type RV, and reduces the cost of the trailer-type RV. This structure is suitable for the variable-color types of SPD suspended particle discoloration, LC dye liquid crystal discoloration and EC electrochromic of the trailer-type RV glass, and has strong versatility. Description of the Drawings

[0009] The following further describes the present utility model in detail with reference to the drawings and specific implementation methods.

[0010] Figure 1 It is a schematic diagram of the overall structure of a variable-color glass structure of a trailer-type RV according to the present utility model;

[0011] Figure 2 It is a schematic cross-sectional structure diagram of a variable-color glass structure of a trailer-type RV according to the present utility model.

[0012] In the figure: 1. Outer PMMA; 2. EVA film; 3. PDLC liquid crystal film; 4. Metal film; 5. Variable-color glass assembly. Specific Embodiment

[0013] The present utility model will be described in detail below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0014] According to one aspect of the present utility model, as Figure 1-2As shown in the figure, a variable-color glass structure for a trailer-type RV is provided, including a variable-color glass assembly 5; the variable-color glass assembly 5 includes an outer PMMA sheet 1, an EVA film 2, a PDLC liquid crystal film 3, and a metal film 4. The outer side walls of the PDLC liquid crystal film 3 are fixedly connected with the EVA film 2, the outer side walls of the EVA film 2 are fixedly connected with the outer PMMA sheet 1, and the left side of the left outer PMMA sheet 1 is fixedly connected with the metal film 4.

[0015] Among them, the outer PMMA sheet 1 is designed with a general structure, the EVA film 2 is designed with a general structure, the PDLC liquid crystal film 3 and the metal film 4 are designed with a general structure. The outer PMMA sheet 1, the EVA film 2 and the PDLC liquid crystal film 3 are first laminated with two transparent adhesive materials, namely EVA and the PDLC liquid crystal film 3, between the two outer PMMA sheets through the lamination process; then the two outer PMMA sheets 1 are surrounded by a sealing sleeve, and the air in the interlayer of the two outer PMMA sheets 1 is extracted through a sealing sleeve to initially bond the two outer PMMA sheets 1; then the two initially bonded outer PMMA sheets 1 are placed in an autoclave, the temperature in the autoclave is set at normal temperature of 25°C, the residual air in the two outer PMMA sheets 1 is extracted through vacuum pressure and then mounted with the metal film 4, and a 45° overlapping extrusion is used to form a variable-color glass assembly for a trailer-type RV.

[0016] The working principle of this device is:

[0017] First, 5 components form a variable-color glass sub-assembly for a trailer-type RV through the lamination process, air extraction through a sealing sleeve, and normal temperature and high pressure air extraction in an autoclave; then 1 component forms a variable-color glass assembly for a trailer-type RV through overlapping extrusion during mounting;

[0018] For the production of the outer PMMA sheet 1, an injection molding process is adopted with a general design and a selected material thickness of 4.0 mm. For the production of the EVA film 2, a melting extrusion + casting embossing + cutting + lamination process is adopted with a general design and a selected material thickness of 0.76 mm. For the production of the PDLC liquid crystal film 3, a magnetron sputtering + cutting + electrode printing process is adopted with a general design and a selected material thickness of 0.1 mm. For the production of the metal film 4, a magnetron sputtering + vacuum aluminizing + interlayer synthesis process is adopted with a general design and a selected material thickness of 0.04 mm. The produced outer PMMA sheet 1, EVA film 2, and PDLC liquid crystal film 3 are subjected to the lamination process, air extraction through a sealing sleeve, and normal temperature and high pressure air extraction in an autoclave. The variable-color glass sub-assembly for a trailer-type RV and the metal film 4 are connected through temperature control and 45° overlapping extrusion mounting to form a variable-color glass assembly for a trailer-type RV;

[0019] Adopt the hybrid mode of outer PMMA + EVA film + PDLC liquid crystal film + EVA film + inner PMMA + metal film, cancel the folding curtain assembly, and the weight of the trailer RV is reduced by about 1 kg. This structure is suitable for connecting PMMA, EVA film, PDLC liquid crystal film and metal film with different thicknesses, and has strong versatility. The inner and outer PMMA, EVA film, PDLC liquid crystal film and metal film are connected by methods such as laminating process, extracting air from the sealed sleeve, extracting air at normal temperature and high pressure in the autoclave, and overlapping extrusion during mounting. The variable-color glass of the trailer RV uses PDLC polymer dye liquid crystal selection (the selection cross-section is universal); the selection adopts an equal-thickness design with a cross-section thickness of 0.1 mm, and the transparency and coloring state of the trailer RV glass are controlled by power on and off, realizing the privacy function inside the trailer RV. The variable-color glass of the trailer RV adopts a metal film structure design. When the variable-color glass of the trailer RV is powered on, it becomes semi-transparent, and when it is powered off, it becomes atomized, which is convenient to operate and improves the aesthetics of the trailer RV. The variable-color glass of the trailer RV adopts an EVA film and metal film structure design, which can resist ultraviolet radiation, slow down the increase of the temperature inside the vehicle after being exposed to the sun, reflect energy, keep warm in winter and cool in summer. The inner and outer PMMA (4.0 mm), EVA film (0.76 mm), PDLC liquid crystal film (0.1 mm) and metal film (0.04 mm) adopt a general structure design, and the matching scheme with peripheral related parts is mature and reliable, reducing the development and parts cost. The variable-color glass of the trailer RV cancels the folding curtain assembly, improves the general assembly efficiency of the trailer RV, and reduces the cost of the trailer RV. This structure is suitable for the variable-color types of SPD suspended particle discoloration, LC dye liquid crystal discoloration and EC electrochromic of the trailer RV glass, and has strong versatility.

[0020] Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model also belong to the protection scope of the present utility model.

Claims

1. A color-changing glass structure for a towable caravan, characterized in that: It includes a color-changing glass assembly (5); the color-changing glass assembly (5) includes an outer PMMA sheet (1), an EVA film (2), a PDLC liquid crystal film (3), and a metal film (4). The outer side walls of the PDLC liquid crystal film (3) are fixedly connected to the EVA film (2), and the outer side walls of the EVA film (2) are fixedly connected to the outer PMMA sheet (1).

2. The variable-color glass structure of a trailer-type recreational vehicle according to claim 1, wherein: The left side of the left outer PMMA sheet (1) is fixedly connected to a metal film (4).

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