Composite high polymer material head-up display cold light mirror and mold thereof

Abstract

The utility model relates to a composite high polymer material head-up display cold light mirror and a mould thereof, the cold light mirror comprises a cold light mirror body and supports, the supports are arranged on the left side and the right side of the cold light mirror body, each support comprises a bottom plate, a side fixing plate and a rotating shaft, the bottom plates are fixed at the bottoms of the left side and the right side of the cold light mirror body, and the side fixing plates are fixed on the rotating shafts. The side fixing plates are fixed to the outer side of the bottom plate and located on the side edges of the left side and the right side of the cold light mirror body respectively, the rotating shafts are fixed to the side edges of the outer sides of the side fixing plates, and the cold light mirror body and the support are integrally formed. The cold light mirror solves the problem that the cold light mirror is difficult to adopt a rotating shaft structure, and the cold light mirror body and the support can be integrally formed.

Description

Technical Field

[0001] The utility model relates to the technical field of cold light mirrors, in particular to a composite polymer material head-up display cold light mirror and a mold thereof. Background Art

[0002] The head-up display of a car is also called a head-up display, or HUD for short. With the application and promotion of HUD in the automotive industry, the industry has applied an augmented reality (AR) technology to HUD, integrating navigation and ADAS (Advanced Driver Assistance System) information with the road ahead, and displaying turn instructions, obstacle warnings, lane departures, front vehicle warnings and other contents to form a virtual-real fusion effect. As the requirements for HUD imaging increase, the requirements for HUD cold light mirrors are also increasing. In the early days, the HUD cold light mirror substrate was mainly injection molded using polycarbonate (PC) material or cyclic olefin copolymer (COC) material. Then, the surface is coated with a cold light film to achieve visible light reflection and infrared light transmission. Due to the high water absorption rate of polycarbonate (PC) material, the cold light mirror type cannot be stable. Due to its high brittleness, cyclic olefin copolymer (COC) material cannot be used in the shaft structure and is easy to break, so it can only be used for the cold light mirror optical body. Utility Model Content

[0003] The utility model aims to provide a composite polymer head-up display cold light mirror and a mold thereof, which can solve the problem that the cold light mirror is difficult to adopt a rotating shaft structure, and provide a mold to realize the integrated molding of the cold light mirror body and the bracket.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite polymer material head-up display cold light mirror, the cold light mirror comprising a cold light mirror body and a bracket, the bracket is arranged on the left and right sides of the cold light mirror body, the bracket comprises a bottom plate, a side fixing plate and a rotating shaft, the bottom plate is fixed to the bottom of the left and right sides of the cold light mirror body, the side fixing plates are respectively fixed to the outside of the bottom plate and are located on the left and right sides of the cold light mirror body, the rotating shaft is fixed to the outer side of the side fixing plate, and the cold light mirror body and the bracket are integrally formed.

[0005] Furthermore, a cold light film layer is provided on the cold light mirror body.

[0006] Furthermore, the material of the bracket is polycarbonate, and the material of the cold light mirror is cycloolefin copolymer.

[0007] A mold for a head-up display cold light mirror made of a composite polymer material, the mold comprising a one-color injection front mold, a two-color injection front mold and a rear mold, a bracket cavity for molding a bracket is formed between the one-color injection front mold and the rear mold, and a cold light mirror cavity for molding a cold light mirror is formed between the two-color injection front mold and the rear mold.

[0008] Furthermore, a single-color front mold runner is provided at the rear end of the upper surface of the single-color injection front mold, and a two-color front mold runner is provided at the front side of the upper surface of the two-color injection front mold.

[0009] Furthermore, a first rear mold runner matching the one-color front mold runner is disposed at the front end of the upper surface of the rear mold, and a second rear mold runner matching the two-color front mold runner is disposed at the rear end of the upper surface of the rear mold.

[0010] Furthermore, the shape of the first rear mold runner is an inverted T-shape, and two ends of a longer side of the first rear mold runner are respectively connected to the bracket cavity.

[0011] Furthermore, the second rear mold runner includes a U-shaped first runner and an inverted trapezoidal second runner, the first runner matches the two-color front mold runner, the second runner is connected to the cold light mirror cavity, and the first runner is connected to the second runner.

[0012] The beneficial effects of the utility model are as follows: a composite polymer head-up display cold light mirror and mold are provided, wherein the bracket of the polycarbonate (PC) material is more reliable and will not break, and the cold light mirror of the cyclic olefin copolymer (COC) material has a more stable surface shape. The cold light mirror using two materials for double-color injection molding can effectively solve the problem of cold light mirror surface fluctuation of the polycarbonate (PC) material, and also improve the problem of the shaft breakage of the cold light mirror bracket of the cyclic olefin copolymer (COC) material. The surface stability of the cold light mirror is greatly improved. The cold light mirror with small surface shape difference has a significant improvement in the imaging of the HUD. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the cold light mirror in the utility model;

[0014] Figure 2 This is the front view of the cold light mirror in the utility model;

[0015] Figure 3 It is a top view of the cold light mirror in the utility model;

[0016] Figure 4 It is a structural schematic diagram of the front mold and the rear mold of the one-color injection molding in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the front mold and the rear mold of the two-color injection molding in the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the one-color injection front mold during injection molding in the utility model

[0019] Figure 7 for Figure 6 Cross-section view along the AA direction;

[0020] Figure 8 for Figure 6 Cross-section along the BB direction;

[0021] Fig. 9 It is a structural schematic diagram of the front mold of the two-color injection molding in the utility model during injection molding;

[0022] Fig.10 for Fig. 9 Cross-section view along the AA direction;

[0023] Fig.11 for Fig. 9 Cross-sectional view along the BB direction.

[0024] Wherein: 1. cold light mirror body, 2. bracket, 21. bottom plate, 22. side fixing plate, 23. rotating shaft, 3. single-color injection front mold, 4. double-color injection front mold, 5. back mold, 6. single-color front mold runner, 7. double-color front mold runner, 8. first back mold runner, 9. second back mold runner, 91. first runner, 92. second runner, 10. cold light film layer. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] See also Figures 1 to 3 The utility model provides an embodiment: a composite polymer head-up display cold light mirror, the cold light mirror comprises a cold light mirror body 1 and a bracket 2, the bracket 2 is arranged on the left and right sides of the cold light mirror body 1, the bracket 2 comprises a bottom plate 21, a side fixing plate 22 and a rotating shaft 23, the bottom plate 21 is fixed to the bottom of the left and right sides of the cold light mirror body 1, the side fixing plates 22 are respectively fixed to the outside of the bottom plate 21 and are located on the left and right sides of the cold light mirror body 1, the rotating shaft 23 is fixed to the outside side of the side fixing plate 22, and the cold light mirror body 1 and the bracket 2 are integrally formed. The utility model divides the cold light mirror into two parts, the cold light mirror (optical part) part and the bracket 2 part, the bracket 2 can allow the cold light mirror to rotate, and the bracket 2 is made of the existing material PC, so that the rotating shaft 23 at the bracket 2 is not easy to break.

[0027] Please continue reading Figure 3As shown, in one embodiment of the utility model, a cold light film layer 10 is provided on the cold light mirror body 1. Plating a visible light film layer on the cold light mirror can realize the functions of visible light reflection and infrared light transmission. The cold light film layer is a PR06 silicon-aluminum mixture, titanium pentoxide, and aluminum oxide. The cold light mirror (optical part) coated with the PR06 silicon-aluminum mixture film layer can achieve high transmission of infrared light (750nm~1550nm band), and the cold light mirror (optical part) coated with titanium pentoxide and aluminum oxide film layers can achieve high reflection of visible light (420nm~680nm band).

[0028] Please continue reading Figures 1 to 3 As shown, in one embodiment of the utility model, the material of the bracket 2 is polycarbonate, and the material of the cold light mirror is cycloolefin copolymer. The bracket 2 made of polycarbonate (PC) material is more reliable and will not break. And the cold light mirror made of cycloolefin copolymer (COC) material has a more stable surface.

[0029] See also Figures 4 to 11 The utility model provides an embodiment: a mold of a composite polymer head-up display cold light mirror, the mold includes a one-color injection front mold 3, a two-color injection front mold 4 and a back mold 5, a bracket 2 cavity for molding the bracket 2 is formed between the one-color injection front mold 3 and the back mold 5, and a cold light mirror cavity for molding the cold light mirror is formed between the two-color injection front mold 4 and the back mold 5. The first injection of the mold is the bracket 2. Polycarbonate (PC) material is used for injection molding, and the second injection is to use cyclic olefin copolymer (COC) material to injection mold the cold light mirror and achieve material bonding with the bracket 2.

[0030] Please continue reading Figure 4 , Figure 5 As shown, in one embodiment of the utility model, a single-color front mold runner 6 is provided at the rear end of the upper surface of the single-color injection front mold 3 , and a two-color front mold runner 7 is provided at the front side of the upper surface of the two-color injection front mold 4 .

[0031] Please continue reading Figure 4 , Figure 5 , Figure 6 , Fig. 9 Figure 5 As shown, in one embodiment of the utility model, the front end of the upper surface of the rear mold 5 is provided with a first rear mold runner 8 matching the one-color front mold runner 6, and the rear end of the upper surface of the rear mold 5 is provided with a second rear mold runner 9 matching the two-color front mold runner 7. The one-color front mold runner 6 and the first rear mold runner 8 cooperate to injection mold the bracket 2, and the two-color front mold runner 7 and the first rear mold runner 8 cooperate to injection mold the cold light mirror, and achieve material bonding with the bracket 2.

[0032] Please continue reading Figure 4 , Figure 6 , Fig. 9 As shown, in one embodiment of the utility model, the shape of the first rear mold runner 8 is an inverted T-shape, and the two ends of the longer side of the first rear mold runner 8 are respectively connected to the cavity of the bracket 2. The inverted T-shape enables the injected polycarbonate (PC) material to flow into the cavities of the bracket 2 on both sides of the mold, thereby realizing the injection molding of the bracket 2.

[0033] Please continue reading Figure 5 , Figure 6 , Fig. 9 As shown, in one embodiment of the utility model, the second back mold runner 9 includes a U-shaped first runner 91 and an inverted trapezoidal second runner 92, the first runner 91 matches the two-color front mold runner 7, the second runner 92 is connected to the cold light mirror cavity, and the first runner 91 is connected to the second runner. The inlet of the first runner 91 receives the cyclic olefin copolymer (COC) material and sends it to the second runner 92. The shape of the second runner 92 is an inverted trapezoidal shape, and the opening gradually increases, which can evenly send the cyclic olefin copolymer (COC) material to various places inside the cold light mirror cavity.

[0034] The first injection molding of the mold is the bracket, which is injection molded with polycarbonate (PC) material. Then the mold is rotated to the second barrel of the injection molding machine, and the cold light mirror is injection molded with cyclic olefin copolymer (COC) material, and the material is bonded with the bracket. After the injection molding is completed, the glue inlet is removed by fine carving. The finely carved plastic parts are then coated with cold light film. The film materials are mainly PR06 silicon-aluminum mixture, titanium pentoxide, and aluminum trioxide. The coated cold light mirror (optical part) can achieve high reflection of visible light (420nm~680nm band) and high transmittance of infrared light (750nm~1550nm band).

[0035] The above description is only a preferred embodiment of the present utility model and cannot be understood as a limitation of the present application. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the present utility model.

Claims

1. A composite polymer head-up display cold light mirror, characterized in that: The cold light mirror includes a cold light mirror body and a bracket, the bracket is arranged on the left and right sides of the cold light mirror body, the bracket includes a bottom plate, a side fixing plate and a rotating shaft, the bottom plate is fixed to the bottom of the left and right sides of the cold light mirror body, the side fixing plates are respectively fixed to the outside of the bottom plate and are located on the left and right sides of the cold light mirror body, the rotating shaft is fixed to the outer side of the side fixing plate, and the cold light mirror body and the bracket are integrally formed.

2. The composite polymer head-up display cold light mirror according to claim 1, characterized in that: A cold light film layer is arranged on the cold light mirror body.

3. The composite polymer head-up display cold light mirror according to claim 1, characterized in that: The material of the bracket is polycarbonate, and the material of the cold light mirror is cycloolefin copolymer.

4. A mold for a composite polymer head-up display cold light mirror, characterized in that: Used for injection molding a composite polymer head-up display cold light mirror as described in any one of claims 1 to 3, the mold comprises a single-color injection front mold, a two-color injection front mold and a rear mold, a bracket cavity for molding the bracket is formed between the single-color injection front mold and the rear mold, and a cold light mirror cavity for molding the cold light mirror is formed between the two-color injection front mold and the rear mold.

5. The mold of the composite polymer head-up display cold light mirror according to claim 4, characterized in that: A single-color front mold runner is disposed at the rear end of the upper surface of the single-color injection front mold, and a two-color front mold runner is disposed at the front side of the upper surface of the two-color injection front mold.

6. The mold of the composite polymer head-up display cold light mirror according to claim 5, characterized in that: The front end of the upper surface of the rear mold is provided with a first rear mold runner matching the one-color front mold runner, and the rear end of the upper surface of the rear mold is provided with a second rear mold runner matching the two-color front mold runner.

7. The mold of the composite polymer head-up display cold light mirror according to claim 6, characterized in that: The shape of the first rear mold runner is an inverted T-shape, and two ends of a longer side of the first rear mold runner are respectively connected to the bracket cavity.

8. The mold of the composite polymer head-up display cold light mirror according to claim 6, characterized in that: The second rear mold runner includes a U-shaped first runner and an inverted trapezoidal second runner, the first runner matches the two-color front mold runner, the second runner is connected to the cold light mirror cavity, and the first runner is connected to the second runner.

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