Head-mounted display equipment shell, preparation method thereof and head-mounted display equipment

Abstract

The invention discloses a head-mounted display equipment shell, a preparation method thereof and head-mounted display equipment, and relates to the technical field of head-mounted display equipment, and the preparation method of the head-mounted display equipment shell comprises the following steps: obtaining a plastic substrate; carrying out surface activation treatment on the plastic base material; processing a primer layer on the surface of the plastic base material subjected to surface activation treatment; and processing a soft rubber layer on the primer layer through injection molding to obtain the head-mounted display equipment shell. The technical problem that in the prior art, the production efficiency of a head-mounted display device shell is low is solved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a head-mounted display device housing and a preparation method thereof, and a head-mounted display device. Background Art

[0002] AR (Augmented Reality) and VR (Virtual Reality) technologies allow users to experience the most realistic feelings in the virtual reality world. The authenticity of the simulated environment is difficult to distinguish from the real world, making people feel immersive. Virtual reality can simulate sensory functions such as hearing, vision, touch, taste, smell, etc., and can also realize human-computer interaction, so that users can operate at will and get real feedback from the environment during the operation. It is the existence, multi-sensory, and interactive features of AR and VR that make it popular with many people. AR / VR devices are mostly worn on the head, and some areas will contact the face. In order to improve the wearing comfort, a layer of soft glue is usually coated on the face of the shell to achieve a soft touch and skin-friendly effect. However, at present, the soft glue layer and the shell of the AR / VR device are processed separately and then further assembled through a snap-on structure, etc., which has low production efficiency. Summary of the invention

[0003] The main purpose of the present application is to provide a head-mounted display device shell and a preparation method thereof and a head-mounted display device, aiming to solve the technical problem of low production efficiency of head-mounted display device shells in the prior art.

[0004] To achieve the above-mentioned object, the present application provides a method for preparing a head-mounted display device shell, wherein the head-mounted display device shell is applied to the head-mounted display device, and the head-mounted display device shell preparation method comprises the following steps:

[0005] Obtaining a plastic substrate;

[0006] Performing surface activation treatment on the plastic substrate;

[0007] Processing a primer layer on the surface of the plastic substrate after surface activation treatment;

[0008] The soft glue layer is processed on the primer layer by injection molding to obtain a head mounted display device shell.

[0009] Optionally, the step of processing the primer layer on the surface of the plastic substrate after the surface activation treatment comprises:

[0010] A primer is applied on the surface of the plastic substrate after the surface activation treatment, and the substrate is dried at a temperature of 100 to 120° C. for 0.5 to 1 hour, so that the primer applied on the surface of the plastic substrate forms a primer layer.

[0011] Optionally, the step of processing the soft glue layer on the primer layer by injection molding to obtain the head mounted display device housing includes:

[0012] Get soft gel feed;

[0013] The plastic substrate processed with the primer layer is placed in an injection molding mold, and the soft glue feed is injected into the injection molding mold. After curing, a soft glue layer is formed on the primer layer to obtain a head-mounted display device.

[0014] Optionally, the step of placing the plastic substrate processed with the primer layer into an injection molding mold, injecting the soft glue feed into the injection molding mold, and forming a soft glue layer on the primer layer after curing to obtain the head mounted display device includes:

[0015] Putting the plastic substrate processed with the primer layer into an injection molding mold, and injecting the soft glue feed into the injection molding mold for injection molding to form a soft glue layer on the primer layer to obtain an initial shell;

[0016] The initial shell is heat-treated at a temperature of 80 to 120° C. for 15 to 60 minutes to obtain a head mounted display device shell.

[0017] Optionally, the injection molding includes a four-stage injection process, and the injection temperature is controlled to be 190-220° C., the mold temperature is 40-50° C., and the injection speed is 50-60 mm / s.

[0018] Optionally, the material of the soft rubber layer includes thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, thermoplastic silicone polyurethane elastomer and / or silicone-based thermoplastic vulcanizate.

[0019] Optionally, the primer includes modified polyurethane or polyurethane-modified acrylic.

[0020] Optionally, the primer layer has a thickness of 5 to 10 μm.

[0021] Optionally, it is characterized in that the surface energy of the plastic substrate after the surface activation treatment is greater than 34 dynes.

[0022] Optionally, it is characterized in that the plastic substrate is a nylon substrate.

[0023] The present application also provides a head-mounted display device shell, which is prepared by the head-mounted display device shell preparation method as described above, and the head-mounted display device shell includes a plastic substrate layer, a primer layer and a soft glue layer.

[0024] The present application also provides a head-mounted display device, which includes the head-mounted display device housing as described above.

[0025] The present application provides a head-mounted display device shell, a preparation method thereof, and a head-mounted display device, wherein the head-mounted display device shell preparation method comprises the steps of: obtaining a plastic substrate; performing surface activation treatment on the plastic substrate; processing a primer layer on the surface of the plastic substrate after the surface activation treatment; and processing a soft glue layer on the primer layer by injection molding to obtain a head-mounted display device shell. The present application improves the surface viscosity of the plastic substrate by performing surface activation treatment on the plastic substrate and processing the primer layer, and then processes the soft glue layer on the surface with higher viscosity, thereby realizing the one-piece molding of the soft glue layer on the shell, thereby omitting the assembly process of the soft glue layer and the shell, overcoming the technical defect of low production efficiency that the soft glue layer and the shell of the AR / VR device are processed separately and then further assembled by a snap-on structure, etc., thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 A schematic diagram of a process of an embodiment of a method for preparing a head mounted display device housing of the present application;

[0029] Figure 2 This is a cross-sectional view of an embodiment of a head mounted display device housing of the present application.

[0030] Description of Figure Numbers:

[0031] Label name Label name 10 Plastic substrate layer 20 Primer layer 30 Soft rubber layer

[0032] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] AR (Augmented Reality) and VR (Virtual Reality) technologies allow users to experience the most realistic feelings in the virtual reality world. The authenticity of the simulated environment is difficult to distinguish from the real world, making people feel immersive. Virtual reality can simulate sensory functions such as hearing, vision, touch, taste, smell, etc., and can also realize human-computer interaction, so that users can operate at will and get real feedback from the environment during operation. It is the existence, multi-sensory, and interactive features of AR and VR that make it popular with many people. AR / VR devices are mostly worn on the head, and some areas will contact the face. In order to improve the wearing comfort, a layer of soft rubber is usually coated on the face of the shell to achieve a soft touch and skin-friendly effect. Lightweight is the trend and requirement of the development of AR and VR. If the weight of AR / VR devices is too high, users will feel pressure and fatigue in their heads during use, which will seriously affect their comfort. However, at present, the shell of AR / VR devices made of lightweight materials and the soft rubber material are usually assembled through gluing or snap-on structures, that is, the soft rubber material and the shell of the AR / VR device need to be processed separately and then the two are further assembled together. In this way, on the one hand, the production efficiency is low, and on the other hand, since the two are processed separately, the matching accuracy between the two is low, and the bonding firmness of the gluing or snap-on structure is low. During processing or use, the soft rubber material is easy to fall off and separate from the shell of the AR / VR device, which will make the quality of the finished product poor.

[0035] In this regard, the present application provides a head-mounted display device shell and a preparation method thereof and a head-mounted display device, wherein the head-mounted display device shell preparation method comprises the steps of: obtaining a plastic substrate; performing surface activation treatment on the plastic substrate; processing a primer layer on the surface of the plastic substrate after the surface activation treatment; and processing a soft gel layer on the primer layer by injection molding to obtain a head-mounted display device shell. The present application performs surface activation treatment on the plastic substrate to increase the chemical reaction activity on the surface of the plastic substrate, and then processes a primer layer on the surface of the plastic substrate after the surface activation treatment. The primer layer fully reacts with the active chemical functional groups on the surface of the plastic substrate and is tightly connected. The primer has a high viscosity, so it can be firmly and tightly connected to the soft gel layer. Therefore, the integral molding of the shell with the soft gel layer can be achieved by injection molding, so that the assembly process of the soft gel layer and the shell can be omitted, overcoming the technical defect of low production efficiency that the soft gel layer and the shell of the AR / VR device are processed separately and then further assembled by a snap-on structure, etc., thereby improving production efficiency.

[0036] The present application embodiment provides a method for preparing a head mounted display device housing. In one embodiment of the method for preparing a head mounted display device housing of the present application, Figure 1 , the head mounted display device housing preparation method comprises:

[0037] Step S10, obtaining a plastic substrate;

[0038] Step S20, performing surface activation treatment on the plastic substrate;

[0039] In this embodiment, it should be noted that the plastic substrate is light in weight and can better meet the lightweight requirements of the head-mounted display device. The plastic substrate may include at least one of nylon (Polyamide, PA), ABS (AcrylonitrileButadieneStyrene, acrylonitrile-butadiene-styrene copolymer), polycarbonate (Polycarbonate, PC), carbon fiber, etc.; the surface activation treatment refers to a treatment method for treating the surface of the workpiece for surface activation and modification, including chemical etching, light radiation, plasma treatment, ion implantation, surface grafting polymerization, etc. The surface tension of the plastic is relatively low, and the surface activation treatment can increase the surface wettability and viscosity of the plastic substrate and improve the surface energy, so that the plastic substrate can be more firmly bonded to the soft rubber layer later.

[0040] Exemplarily, a plastic substrate can be pre-formed by injection molding, extrusion, etc., and the surface of the plastic substrate should be dense and free of defects to avoid affecting the adhesion with the soft glue. Then, the pre-prepared plastic substrate is obtained, and the entire or partial area of ​​the surface of the plastic substrate is subjected to surface activation treatment to increase the surface tension of the plastic substrate, wherein the area of ​​the plastic substrate surface subjected to the surface activation treatment can be the area that may contact the user's skin when the head-mounted display device is worn on the user's head.

[0041] In one practicable manner, the surface activation treatment is plasma surface activation. Plasma surface activation is a process in which surface polymer functional groups are replaced by atoms of different ions in plasma to increase surface energy, which can effectively improve the surface wettability and adhesion of the material.

[0042] Optionally, the plastic substrate is a nylon substrate.

[0043] In this embodiment, nylon is a polyamide thermoplastic resin, which is a general term for thermoplastic resins containing repeating amide groups — [NHCO] — on the main chain of the molecule. Nylon has excellent mechanical properties and electrical insulation properties, high mechanical strength, good toughness, and also has excellent heat resistance, weather resistance and friction resistance. The density of low-density nylon substrates can be less than 1g / m 2 , which can well meet the lightweight requirements of head-mounted display devices and is very suitable for making head-mounted display device shells.

[0044] Optionally, the surface energy of the plastic substrate after the surface activation treatment is greater than 34 dynes.

[0045] In this embodiment, the surface energy of the plastic substrate after the surface activation treatment should be greater than 34 dynes to improve the bonding force between the plastic substrate and the soft adhesive.

[0046] Step S30, processing a primer layer on the surface of the plastic substrate after the surface activation treatment;

[0047] In this embodiment, it should be noted that the primer is an auxiliary material with very low viscosity, which can be evenly coated on the surface of the substrate and has a bonding effect. It is used to improve the bonding strength and long-term stability. The primer can be purchased as a commercial product or can be prepared by yourself. This embodiment does not limit this.

[0048] For example, the surface of the plastic substrate can be cleaned first, and then the primer can be evenly coated on all or part of the surface of the plastic substrate by brushing, spraying, soaking, etc. The primer coated on the surface of the plastic substrate can be naturally dried or baked to form a primer layer on the surface of the plastic substrate.

[0049] Optionally, the step of processing the primer layer on the surface of the plastic substrate after the surface activation treatment comprises:

[0050] A primer is applied on the surface of the plastic substrate after the surface activation treatment, and the substrate is dried at a temperature of 100 to 120° C. for 0.5 to 1 hour, so that the primer applied on the surface of the plastic substrate forms a primer layer.

[0051] For example, the primer can be evenly coated on the surface of the plastic substrate after surface activation treatment by brushing, spraying, immersion, etc., and the plastic substrate coated with the primer is placed in an environment with a temperature of 100 to 120°C, such as 100°C, 110°C, 120°C, etc., and dried for 0.5 to 1h, such as 0.5h, 45 minutes, 1h, etc. Appropriate heating can make the solvent in the primer coated on the surface of the plastic substrate evaporate faster, dry faster, and form a primer layer. It can also increase the activity of the molecules in the primer and improve the adhesion of the primer.

[0052] In one practicable manner, the area on the surface of the plastic substrate where the primer is applied may be an area on the head mounted display device where the surface activation treatment is performed.

[0053] Optionally, the primer layer has a thickness of 5 to 10 μm.

[0054] In this embodiment, the thickness of the primer layer is 5-10 μm, for example, 5 μm, 8 μm, 10 μm, etc.

[0055] Optionally, the primer includes modified polyurethane or polyurethane-modified acrylic.

[0056] In this embodiment, the polyurethane primer has good adhesion between the plastic and the soft rubber layer, especially between nylon material and soft rubber materials such as TPU (Thermoplastic Urethane), TPEE (Thermoplastic Polyester Elastomer), TPSiU (thermoplastic silicone polyurethane elastomer), and TPSiV (silicone-based thermoplastic vulcanizate). Therefore, the processing raw material of the primer layer can be modified polyurethane or polyurethane-modified acrylic.

[0057] Step S40, processing a soft glue layer on the primer layer by injection molding to obtain a head mounted display device housing.

[0058] In this embodiment, it should be noted that the soft rubber layer refers to a functional layer made of plastic with relatively low surface hardness, which is used to contact the user's skin when the user wears the head-mounted display device, thereby improving the wearing comfort of the head-mounted display device; injection molding refers to a method in which the plastic is heated and plasticized, and then injected into the mold cavity of a closed mold by a plunger or a reciprocating screw to form a product. Through the design of the mold, products of various appearance shapes can be flexibly processed, so it is suitable for the processing of the head-mounted display device shell. The specific process parameters of the soft rubber layer injection molding can be determined after testing according to actual conditions, and this embodiment does not limit this.

[0059] Exemplarily, the soft gel layer can be processed on the primer layer by injection molding, and a head-mounted display device with a soft gel layer can be obtained by integral molding, wherein the soft gel layer can be processed on the primer layer by placing the plastic substrate processed with the primer layer into an injection molding mold in the form of an insert, and then injecting the soft gel layer material into the injection molding mold, so that the soft gel layer material can be directly coated on the corresponding position of the plastic substrate surface, and can be formed in one go after curing and cross-linking; the soft gel layer can also be processed on the primer layer by directly injecting the soft gel layer material into the injection molding mold, and obtaining the soft gel layer substrate after curing and molding, and after splicing the soft gel layer substrate and the plastic substrate, further cross-linking is performed to make the soft gel layer substrate and the plastic substrate cross-linked and connected together.

[0060] Optionally, the injection molding includes a four-stage injection process, and the injection temperature is controlled to be 190-220° C., the mold temperature is 40-50° C., and the injection speed is 50-60 mm / s.

[0061] In this embodiment, the injection molding is divided into four stages for injection, and the injection temperature of each stage is controlled to be 190-220°C, for example, 190°C, 200°C, 210°C, 220°C, etc., the mold temperature is 40-50°C, for example, 40°C, 45°C, 50°C, etc., and the injection speed is 50-60mm / s, for example, 50mm / s, 55mm / s, 60mm / s, etc.

[0062] Optionally, the step of processing the soft glue layer on the primer layer by injection molding to obtain the head mounted display device housing includes:

[0063] Step S41, obtaining soft glue feed;

[0064] Step S42, placing the plastic substrate processed with the primer layer into an injection molding mold, and injecting the soft glue feed into the injection molding mold, forming a soft glue layer on the primer layer after curing, and obtaining a head-mounted display device.

[0065] Exemplarily, a soft glue feed is obtained for use, and a plastic substrate processed with a primer layer is used as an insert and placed in an injection molding mold. Then, the soft glue feed is injected into the injection molding mold through an injection molding device, so that the soft glue feed injected into the injection molding mold is wrapped on the primer layer. After the soft glue layer material is solidified, a soft glue layer can be formed on the primer layer to obtain a head-mounted display device with a soft glue layer. Compared with the method of separately processing the plastic substrate and the soft glue layer and then gluing or snap-connecting them, using the plastic substrate processed with a primer layer as an insert for injection molding of the soft glue layer can effectively improve the fit between the soft glue layer and the plastic substrate, so that the two fit closely, and the adhesion between the two can also be effectively improved, the connection between the soft glue layer and the plastic substrate is more firm, and the product quality is higher.

[0066] Optionally, the step of placing the plastic substrate processed with the primer layer into an injection molding mold, injecting the soft glue feed into the injection molding mold, and forming a soft glue layer on the primer layer after curing to obtain the head mounted display device includes:

[0067] Step S421, placing the plastic substrate processed with the primer layer into an injection molding mold, and injecting the soft glue feed into the injection molding mold for injection molding to form a soft glue layer on the primer layer to obtain an initial shell;

[0068] Step S422: heat-treating the initial shell at a temperature of 80 to 120° C. for 15 to 60 minutes to obtain a head mounted display device shell.

[0069] Exemplarily, a plastic substrate processed with a primer layer is used as an insert and placed in an injection molding mold. Then, the soft glue feed is injected into the injection molding mold through an injection molding device, so that the soft glue feed injected into the injection molding mold is wrapped on the primer layer. After the soft glue layer material is cured, a soft glue layer can be formed on the primer layer to obtain an initial shell; the initial shell is placed in an environment with a temperature of 80 to 120°C, such as 80°C, 100°C, 120°C, etc., and heat treated for 15 to 60 minutes, such as 15 minutes, 30 minutes, 60 minutes, etc., so that the soft glue layer and the primer layer are fully cross-linked and tightly connected together.

[0070] Optionally, the material of the soft rubber layer includes thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, thermoplastic silicone polyurethane elastomer and / or silicone-based thermoplastic vulcanizate.

[0071] In this embodiment, a method for preparing the head-mounted display device shell is provided, comprising the steps of: obtaining a plastic substrate; performing surface activation treatment on the plastic substrate; processing a primer layer on the surface of the plastic substrate after the surface activation treatment; and processing a soft gel layer on the primer layer by injection molding to obtain a head-mounted display device shell. In this application, the chemical reaction activity of the surface of the plastic substrate is increased by performing surface activation treatment on the plastic substrate, and then a primer layer is processed on the surface of the plastic substrate after the surface activation treatment. The primer layer fully reacts with the active chemical functional groups on the surface of the plastic substrate and is tightly connected. The viscosity of the primer is relatively high, so it can be firmly and tightly connected to the soft gel layer. Therefore, the integral molding of the shell with the soft gel layer can be achieved by injection molding, so that the assembly process of the soft gel layer and the shell can be omitted, overcoming the technical defect of low production efficiency that the soft gel layer and the shell of the AR / VR device are processed separately and then further assembled by a snap-on structure, etc., thereby improving production efficiency.

[0072] Furthermore, the present invention also provides a head-mounted display device shell, the head-mounted display device shell is prepared by the head-mounted display device shell preparation method as described above. In one embodiment of the head-mounted display device shell of the present application, referring to Figure 2 The head mounted display device shell includes a plastic substrate 10, a primer layer 20 and a soft glue layer 30.

[0073] The head-mounted display device shell provided by the present application solves the technical problem of low production efficiency of the head-mounted display device shell in the prior art. Compared with the prior art, the beneficial effects of the head-mounted display device shell provided by the embodiment of the present invention are the same as the beneficial effects of the head-mounted display device shell preparation method in the above embodiment, which will not be repeated here.

[0074] Furthermore, the present invention also provides a head-mounted display device, which includes the head-mounted display device housing as described above.

[0075] The head-mounted display device shell provided by the present application solves the technical problem of low production efficiency of the head-mounted display device shell in the prior art. Compared with the prior art, the beneficial effects of the head-mounted display device shell provided by the embodiment of the present invention are the same as the beneficial effects of the head-mounted display device shell preparation method in the above embodiment, which will not be repeated here.

[0076] In order to further understand the present application, the preparation method of the head mounted display device housing provided by the present application is specifically described below in combination with the embodiments. The embodiments of the present invention all use commercially available raw materials.

[0077] Example 1

[0078] A nylon substrate was prepared by injection molding, and the nylon substrate was subjected to plasma surface activation treatment. A layer of polyurethane modified acrylic primer was brushed on the surface of the nylon substrate after the surface activation treatment, and the substrate was dried at 110° C. for 40 minutes to form a primer layer. The nylon substrate with the primer layer was placed as an insert in a prefabricated injection molding mold, and TPU feeding was divided into four stages for injection. The temperature of each injection was controlled at 200° C., the mold temperature was 45° C., the injection speed was 55 mm / s, and the substrate was heat treated at 100° C. for 45 minutes after injection molding.

[0079] Test: The head mounted display device shell prepared in Example 1 of the present invention was sampled for a tensile test. The sample was subjected to a tensile test in accordance with GB / T228.1-2010, and the bonding force between the plastic substrate and the soft rubber layer was measured to be 133N.

[0080] Example 2

[0081] A nylon substrate was prepared by injection molding, and the nylon substrate was subjected to plasma surface activation treatment. A layer of modified polyurethane primer was brushed on the surface of the nylon substrate after the surface activation treatment, and the substrate was dried at 110° C. for 40 minutes to form a primer layer. The nylon substrate with the primer layer was placed as an insert in a prefabricated injection molding mold, and TPU feed was divided into four stages for injection. The temperature of each injection was controlled at 200° C., the mold temperature was 45° C., the injection speed was 55 mm / s, and the substrate was heat treated at 100° C. for 45 minutes after injection molding.

[0082] Test: The head mounted display device shell prepared in Example 1 of the present invention was sampled for a tensile test. The sample was subjected to a tensile test in accordance with GB / T228.1-2010, and the adhesion force between the plastic substrate and the soft rubber layer was measured to be 154N.

[0083] Example 3

[0084] A nylon substrate was prepared by injection molding, and the nylon substrate was subjected to plasma surface activation treatment. A layer of polyurethane modified acrylic primer was brushed on the surface of the nylon substrate after the surface activation treatment, and the substrate was dried at 100°C for 1 hour to form a primer layer. The nylon substrate with the primer layer was placed as an insert in a pre-made injection molding mold, and the TPEE feed was divided into four stages for injection. The temperature of each injection was controlled at 190°C, the mold temperature was 40°C, the injection speed was 50 mm / s, and the substrate was heat treated at 80°C for 60 minutes after injection molding.

[0085] Test: The head mounted display device shell prepared in Example 1 of the present invention was sampled for a tensile test. The sample was subjected to a tensile test in accordance with GB / T228.1-2010, and the bonding force between the plastic substrate and the soft rubber layer was measured to be 163N.

[0086] Example 4

[0087] A nylon substrate was prepared by injection molding, and the nylon substrate was subjected to plasma surface activation treatment. A layer of polyurethane modified acrylic primer was brushed on the surface of the nylon substrate after the surface activation treatment, and the substrate was dried at 120°C for 0.5h to form a primer layer. The nylon substrate with the primer layer was placed as an insert in a prefabricated injection molding mold, and the TPSiU feed was divided into five stages for injection. The temperature of each injection was controlled at 220°C, the mold temperature was 50°C, the injection speed was 60mm / s, and the substrate was heat treated at 120°C for 15min after injection molding.

[0088] Test: The head mounted display device shell prepared in Example 1 of the present invention was sampled for a tensile test. The sample was subjected to a tensile test in accordance with GB / T228.1-2010, and the bonding force between the plastic substrate and the soft rubber layer was measured to be 172N.

[0089] Example 5

[0090] A nylon substrate was prepared by injection molding, and the nylon substrate was subjected to plasma surface activation treatment. A layer of polyurethane modified acrylic primer was brushed on the surface of the nylon substrate after the surface activation treatment, and the substrate was dried at 105° C. for 50 min to form a primer layer. The nylon substrate with the primer layer was placed as an insert in a prefabricated injection molding mold, and the TPSiV feed was divided into four stages for injection. The temperature of each injection was controlled at 210° C., the mold temperature was 45° C., the injection speed was 55 mm / s, and the substrate was heat treated at 110° C. for 30 min after injection molding.

[0091] Test: The head mounted display device shell prepared in Example 1 of the present invention was sampled for a tensile test. The sample was subjected to a tensile test in accordance with GB / T228.1-2010, and the adhesion force between the plastic substrate and the soft rubber layer was measured to be 112N.

[0092] It can be seen that the head mounted display device shells prepared by using the above embodiments 1-5 are all greater than 80N, that is, they can all meet the product reliability test requirements.

[0093] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A method for preparing a head mounted display device housing, characterized in that: The method for preparing a head mounted display device housing comprises the following steps: Obtaining a plastic substrate; Performing surface activation treatment on the plastic substrate; Processing a primer layer on the surface of the plastic substrate after surface activation treatment; The soft glue layer is processed on the primer layer by injection molding to obtain a head mounted display device shell.

2. The method for preparing a head mounted display device housing according to claim 1, wherein: The step of processing the primer layer on the surface of the plastic substrate after the surface activation treatment comprises: A primer is applied on the surface of the plastic substrate after the surface activation treatment, and the mixture is dried at a temperature of 100 to 120° C. for 0.5 to 1 hour, so that the primer applied on the surface of the plastic substrate forms a primer layer.

3. The method for preparing a head mounted display device housing according to claim 2, wherein: The step of processing the soft glue layer on the primer layer by injection molding to obtain the head mounted display device housing comprises: Get soft gel feed; The plastic substrate processed with the primer layer is placed in an injection molding mold, and the soft glue feed is injected into the injection molding mold. After curing, a soft glue layer is formed on the primer layer to obtain a head-mounted display device.

4. The method for preparing a head mounted display device housing according to claim 3, wherein: The steps of placing the plastic substrate processed with the primer layer into an injection molding mold, injecting the soft glue feed into the injection molding mold, and forming a soft glue layer on the primer layer after curing to obtain the head mounted display device include: Putting the plastic substrate processed with the primer layer into an injection molding mold, and injecting the soft glue feed into the injection molding mold for injection molding to form a soft glue layer on the primer layer to obtain an initial shell; The initial shell is heat-treated at a temperature of 80 to 120° C. for 15 to 60 minutes to obtain a head mounted display device shell.

5. The method for preparing a head mounted display device housing according to claim 3, wherein: The injection molding includes four stages of glue injection process, and the injection temperature is controlled to be 190-220° C., the mold temperature is 40-50° C., and the injection speed is 50-60 mm / s.

6. The method for preparing a head mounted display device housing according to claim 1, wherein: The material of the soft rubber layer includes thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, thermoplastic silicone polyurethane elastomer and / or silicone-based thermoplastic vulcanizate.

7. The method for preparing a head mounted display device housing according to claim 1, wherein: The primer includes modified polyurethane or polyurethane modified acrylic acid; The thickness of the primer layer is 5 to 10 μm.

8. The method for preparing a head mounted display device housing according to any one of claims 1 to 7, characterized in that: The surface energy of the plastic substrate after the surface activation treatment is greater than 34 dynes.

9. A head mounted display device housing, characterized in that: The head-mounted display device shell is prepared by the head-mounted display device shell preparation method according to any one of claims 1 to 8, and the head-mounted display device shell includes a plastic substrate layer, a primer layer and a soft glue layer.

10. A head mounted display device, characterized in that: The head-mounted display device comprises the head-mounted display device housing as claimed in claim 9.

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