WO2019071590A1

WO2019071590A1 - Face-contacting sponge pad for vr device and preparation method thereof, and vr device

Info

Publication number: WO2019071590A1
Application number: PCT/CN2017/106136
Authority: WO
Inventors: 刘腾; 林益邦; 吴昊; 龚亚运
Original assignee: 华为技术有限公司
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2019-04-18
Also published as: CN110741307A

Abstract

A face-contacting sponge pad for a VR device and a preparation method thereof, and a VR device. The sponge pad comprises a sponge pad main body (1) of an annular structure. A side wall of the sponge pad main body (1) has two opposite surfaces: a raised adhering surface (4) and a recessed fitting surface (2). The adhering surface (4) adheres to the VR device. The fitting surface (2) fits to the face of a user. The sponge pad further comprises a fabric layer wrapping the sponge pad main body (1). The structure of the sponge pad enables the sponge pad to fit to the face of the user, such that the sponge pad main body conforms to the face, providing good tolerance and a comfortable fit.

Description

Sticking face sponge pad for VR device and preparation method thereof, VR device

Technical field

The present application relates to the technical field of VR devices, and in particular, to a face sponge pad for a VR device, a preparation method thereof, and a VR device.

Background technique

Virtual Reality (VR) technology is a computer simulation system that can create and experience a virtual world. It uses a computer to generate a simulation environment, which is a multi-source information fusion, interactive 3D dynamic vision and System simulation of entity behavior immerses users in the environment.

The face sponge pad is in direct contact with the human face, which satisfies the shading while providing comfort, so that the experiencer is better immersed in the virtual reality environment. At present, the solutions on the market mostly use the form of soft rubber sheath + flat sponge, that is, in order to achieve shading and better fit, a soft rubber sheath is needed to provide support, and then a layer of flat sponge is attached to the skin.

However, the higher density of soft rubber (usually thermoplastic polyurethane elastomer rubber, thermoplastic elastomer material or silica gel) leads to heavy jacket and affects the experience; soft plastic parts have poor injection stability and low yield, resulting in low productivity and high price. The flat sponge is thinner and has poor tolerance when applied to the skin.

Summary of the invention

The present application provides a face sponge pad for a VR device, a preparation method thereof, and a VR device for improving the comfort of the VR device during use.

In a first aspect, the present application provides a face sponge pad for a VR device, the sponge pad comprising a sponge pad body, the sponge pad body is an annular structure, and the sidewall of the sponge pad body has two opposite sides. The surface is respectively a convex and adhesive surface and a concave bonding surface; wherein the bonding surface is used for laminating connection with the VR device, the bonding surface is used for bonding with the human face; a fabric layer of the sponge pad body.

In the above technical solution, by forming the sponge pad into a body structure, the sponge is directly formed into a 3D three-dimensional sponge attached to the human face, so that the sponge pad body can better fit the face and provide a good tolerance. Sexuality and fit.

In a specific embodiment, the sidewall of the sponge pad body has a bent structure for attaching the bridge of the nose. Provides good tolerance and fit.

In a specific embodiment, the fabric layer is provided with a backing sponge, and the backing sponge is adhesively bonded to the sponge pad body. Convenient fabric layer to improve good tolerance and fit.

In a specific embodiment, a layer of magic batt for adhesive bonding to the VR device is attached to the fabric layer. Connect to the VR device through the magic layer. Of course, other methods such as double-sided tape, glue, and buckle can be used.

In a specific embodiment, the magic batt is adhesively bonded to the fabric layer.

In a specific embodiment, the sponge pad body comprises a plurality of layers of sponge, and the plurality of layers of the sponge layer have different hardnesses. By using sponges of different hardness to improve the hardness of the sponge pad itself, it provides good tolerance and fit.

In a specific embodiment, the sponge pad body comprises three layers of sponge layers, and the three layers of sponge layers have hardnesses of 60, 40, 20, respectively.

In a specific embodiment, the fabric layer is an island sponge having no elasticity, a uniaxial elastic or a biaxially elastic polyester.

In a second aspect, a method for preparing a visor sponge pad for a VR device is provided, the method comprising the steps of:

Main body sponge opening;

The main sponge of the material is hot pressed to form a ring structure;

Compressing the fabric layer;

The fabric layer is wrapped in a ring structure formed by hot pressing.

In the above technical solution, the 3D sponge is formed by hot pressing, so that the sponge pad body can be better fitted to the human face, providing good tolerance and fit.

In a specific embodiment, the main body sponge is specifically formed by cutting a large piece of the main body sponge into small pieces of the main body sponge; and cutting the small piece of the main body sponge into a main structure of the sponge pad by wire cutting. The wire cutting can be used to open large-size sponges with small dimensional deviation and high efficiency, and can form a three-dimensional sponge pad shape.

In a specific embodiment, the hot-rolling main sponge is heat-pressed to form an annular structure, in particular: the extruded main body sponge is placed in a hot press mold for hot press forming.

In a specific embodiment, the hot press mold includes a lower mold, an upper mold, and a sleeve that is disposed on the lower mold and located between the lower mold and the upper mold; the main body sponge after the cutting It is placed in the sleeve and extruded through the upper and lower dies. The sleeve can assist the positioning and molding of the sponge blank after the opening, and can form a complex shape and a large-sized shape sponge.

In a specific embodiment, the method further comprises: bonding different hot-pressed body sponges of different hardness into a single body in a manner of gradually decreasing hardness.

In a specific embodiment, the hot pressing of the fabric layer is specifically:

Attaching a backing sponge to the fabric layer;

The fabric layer to which the backing sponge is attached is thermoformed.

In a specific embodiment, the backing sponge has a thickness of from 1 to 10 mm.

In a specific embodiment, the annular structure in which the fabric layer is wrapped by hot pressing is specifically:

The fabric layer is wrapped on a thermoformed body sponge and the backing sponge is bonded to the thermoformed body sponge.

In a specific embodiment, the method further comprises: bonding a magic batt layer to the fabric layer of the package attachment surface.

In a third aspect, a VR device is provided, the VR device comprising a VR device body and a VR device face sponge pad manufactured by the method of any one of the above-mentioned methods connected to the VR device body.

DRAWINGS

1 is a schematic structural view of a sponge pad in the prior art;

2 is a layer structural view of a sponge pad main body according to an embodiment of the present application;

FIG. 3 is a flow chart of preparing a sponge mat according to an embodiment of the present application.

Detailed ways

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings.

In order to facilitate the understanding of the technical solution of the present application, the sponge pad of the prior art is first described. The sponge pad of the prior art is in the form of a soft rubber sheath + a flat sponge, that is, the soft rubber sheath is made to fit the face. The shape, after which the flat sponge is attached to the soft rubber sheath. When using this structure, the sponge needs to undergo a certain deformation, such as bending or stretching, resulting in a poor fit with the face, and soft The rubber sheath is heavier and increases the weight of the human body.

In order to solve the above technical problem, as shown in FIG. 1 , the embodiment of the present application provides a face sponge pad for a VR device, the sponge pad includes a sponge pad body 1 , and the sponge pad body 1 has a ring structure, and the ring shape The side walls of the structure are used to support the VR device and conform to the human face, and the hollow portion of the annular structure corresponds to the human eye portion. And in the specific connection, the side wall of the sponge pad main body 1 has a convex surface 4 and a concave surface 2, wherein the bonding surface 4 is used for bonding with the VR device, and the bonding surface 2 is used. Attached to the person's face.

The sponge body 1 can select 10-100 hardness according to the experimental test, and the density requirement is 10-100 density, and the three-dimensional structure of the shape of the contour of the human body is processed, that is, the sponge pad has a concave shape matching the forehead of the human body. And the side wall of the sponge pad main body 1 has a bending structure 3 for fitting the bridge of the nose. To provide good tolerance and fit. The overall height is 150mm. In the specific production, the sponge pad main body 1 forms a 3D three-dimensional sponge pad structure by wire cutting and hot pressing. It may be a single layer structure or a multilayer structure. When a single layer structure is used, a sponge material of a hardness is directly cut and formed by hot pressing. When a multi-layer structure is used, a plurality of sponge materials having different hardnesses are cut and heat-pressed, and then laminated to form an integral form, and the hardness of different sponge layers is different. For example, the sponge body 1 can be layered according to requirements, and can be divided into 2-5 layers. In the specific setting, the hardness between different sponge layers can be arbitrarily combined according to experience. As shown in FIG. 2, the sponge pad main body 1 adopts three layers of sponge layers, and when disposed, along the bonding surface 4 to the bonding surface 2, the sponge The hardness of the layer gradually decreases. Wherein, the bottom sponge layer 11 (a sponge layer for setting the adhesive surface 4) is made of a sponge material having a density of 60 hardness 60 to provide stable body support for the sponge pad body 1, and the central sponge layer 12 is selected to have a density of 40 and 40. The sponge material increases the height of the entire sponge pad, and the top sponge layer 13 (a sponge layer for setting the bonding surface 2) directly contacts the skin, and a sponge material having a density of 20 hardness is used to provide good tolerance. And a sense of fit.

In addition, in order to improve the supporting effect of the sponge pad, a support piece may be disposed on the sponge pad, and the support piece is prepared by using a plastic material such as polycarbonate, acrylonitrile-butadiene-styrene copolymer, polypropylene or the like. When the sponge pad main body 1 is connected to the above-mentioned support sheet, glue bonding may be used, specifically, such as hot melt adhesive, yellow plastic, thermal adhesive or the like. Due to the use of the sheet structure, the weight of the support structure can be greatly reduced as compared with the prior art protective sleeve structure.

In order to further improve the comfort of the sponge pad and the face when it is fitted. The sponge body 1 is externally wrapped with a fabric layer for protecting the sponge pad body 1. The fabric layer can be prepared by using different materials such as elastic island sponge, unidirectional elastic or biaxial elastic polyester. In order to facilitate the forming of the fabric layer, in the specific setting, the backing sponge is arranged on the fabric layer, and the backing sponge is introduced to assist the shaping, and a backing sponge with a thickness of 1-10 mm is attached on the back side of the fabric, such as 1 mm, 4 mm, 6 mm. , 8mm, 10mm, etc., because the fabric is not easy to shape, However, the sponge is easy to set, and the backing sponge and the fabric are shaped together by attaching a backing sponge. At the same time, when the hot pressing is introduced, the fabric fixing fixture is used to assist the shaping, and the circumference of the fabric is fixed by the jig during the forming process, and the fabric is kept in the pulling state during the hot pressing setting process, and is closely attached to the upper mold or the lower mold of the mold, so that The fabric can form a complex shape and a large-sized shape; thereby being able to fit the sponge pad well when wrapping the sponge pad body 1. When the backing sponge is specifically disposed, the backing sponge is bonded to the sponge pad main body 1.

When the sponge pad is connected to the VR device, the connection can be realized in different ways, such as double-sided tape, glue, velcro, buckle, and the like. In a specific embodiment, a layer of magic batt for bonding to the VR device is attached to the fabric layer. And the magic batt is bonded to the fabric layer to achieve a relative fixation between the magic batt and the fabric layer.

It can be seen from the above description that the sponge pad provided in the embodiment of the present application forms a 3D three-dimensional sponge structure by using a process such as cutting and hot pressing, that is, the sponge pad can be attached to the human face in a natural state, without the prior art. The mid-plane sponge layer needs to be bent and deformed between the faces of the human body to achieve a fit with the human face, so that the sponge pad body 1 can better fit the face, providing good tolerance and sticking. Sense.

In addition, the embodiment of the present application further provides a method for preparing the above-mentioned VR device patch sponge pad, the method comprising the following steps:

Main body sponge opening;

The main sponge of the material is hot pressed to form a ring structure;

Compressing the fabric layer;

The fabric layer is wrapped in a ring structure formed by hot pressing.

The preparation steps will be described in detail below in conjunction with specific examples. The specific steps are shown in Figure 3.

Step 001, the main sponge is opened;

In the specific material opening, the two steps are included. First, the bulk body sponge is cut into small pieces of the body sponge; after that, the small body sponge is cut into a main structure of the sponge pad by wire cutting. The main sponge is cut by wire cutting. At present, the traditional cutting method is laser cutting and die cutting. For large-size sponges, laser cutting will cause dirt, the opening is not uniform, etc. The sponge will be severely deformed, and the size of the material to be cut varies greatly. The wire cutting can be used to cut large-size sponges, with small dimensional deviation and high efficiency, and can form a three-dimensional sponge shape.

Step 002: hot pressing the main sponge of the material to form a ring structure;

Specifically, the main sponge of the material is placed in a hot press mold and hot pressed. Wherein, the hot pressing die comprises a lower die, an upper die, and a sleeve disposed on the lower die and located between the lower die and the upper die; the main body sponge after the opening is placed into the sleeve, and passes through the upper die and the lower die Extrusion. The sleeve can assist the positioning and molding of the sponge blank after the opening, and can form a complex shape and a large-sized shape sponge.

When the sponge body comprises a plurality of layers, the

above steps

001 and 002 need to be performed a plurality of times, and the main sponges of different hardnesses which are differently formed by hot pressing are bonded together in an arrangement in which the hardness is gradually lowered.

Step 003, attaching a support piece;

Specifically, a support sheet is prepared using a plastic material such as polycarbonate, acrylonitrile-butadiene-styrene copolymer, or polypropylene. When the main body of the sponge pad is connected to the support sheet, glue may be used for bonding, specifically, such as hot melt adhesive, yellow plastic, thermal adhesive or the like. Due to the use of the sheet structure, the weight of the support structure can be greatly reduced as compared with the prior art protective sleeve structure. In the specific bonding, yellow plastic is applied to the main sponge after hot pressing, and Hold the yellow glue and paste the main sponge with the support piece.

Step 004: thermoforming the fabric layer;

Specifically, first, the fabric is opened, and a backing sponge is attached to the fabric layer; and the hole position is revised so that the fabric can be attached to the main body of the sponge pad, and then the fabric layer to which the backing sponge is attached is thermoformed. The fabric layer is used to protect the main body of the sponge pad, and the fabric layer can be prepared by using different materials such as non-elastic island velvet, unidirectional elastic or biaxial elastic polyester. In order to facilitate the forming of the fabric layer, in the specific setting, the backing sponge is arranged on the fabric layer, and the backing sponge is introduced to assist the shaping, and a backing sponge with a thickness of 1-10 mm is attached on the back side of the fabric, such as 1 mm, 4 mm, 6 mm. 8mm, 10mm, etc., because the fabric is not easy to shape, but the sponge is easy to shape, and the backing sponge and the fabric are shaped together by attaching the backing sponge. At the same time, when the hot pressing is introduced, the fabric fixing fixture is used to assist the shaping, and the circumference of the fabric is fixed by the jig during the forming process, and the fabric is kept in the pulling state during the hot pressing setting process, and is closely attached to the upper mold or the lower mold of the mold, so that The fabric can be formed into a complex shape and a large-sized shape; thus, it can be well matched with the sponge pad when wrapping the main body of the sponge pad. When the backing sponge is specifically disposed, the backing sponge is bonded to the main body of the sponge pad.

Step 005: wrapping the fabric layer in a ring structure formed by hot pressing.

After the main sponge and fabric are shaped according to the final shape, the main sponge and the fabric are assembled and assembled. Since the sponge and the main sponge are subjected to hot pressing and setting, no large stretching force is required during assembly and wrapping, which helps Maintain the final dimensions of the part and eventually form a sponge pad. Wherein, the fabric layer is wrapped on the thermoformed main sponge, and the backing sponge is bonded to the thermoformed main sponge.

Step 006: Bonding a magic layer on the fabric layer of the package attachment surface.

Specifically, the magic batt layer is bonded to the fabric layer by, for example, hot melt adhesive, yellow plastic, thermal adhesive, or the like.

It can be seen from the above preparation method that the 3D sponge is formed by hot pressing, so that the main body of the sponge pad can be better fitted to the human face, providing good tolerance and fit.

In addition, the embodiment of the present application further provides a VR device, which includes a VR device body and a VR device face sponge pad manufactured by the method described in any one of the above.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It is within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A face sponge pad for a VR device, comprising: a sponge pad body, the sponge pad body is an annular structure, and a sidewall of the sponge pad body has two opposite faces, respectively convex And a bonding surface and a concave bonding surface; wherein the bonding surface is used for laminating connection with the VR device, the bonding surface is used for bonding with the human face; and the fabric is wrapped with the main body of the sponge pad Floor.
The face sponge pad body for a VR device according to claim 1, wherein the side wall of the sponge pad body has a bent structure for fitting the bridge of the nose.
The face sponge pad for a VR device according to claim 1, wherein the fabric layer is provided with a backing sponge, and the backing sponge is adhesively connected to the sponge pad body.
The face sponge pad for a VR device according to claim 1, wherein a magic layer for bonding and connecting with the VR device is connected to the fabric layer.
The face sponge pad for a VR device according to any one of claims 1 to 4, wherein the sponge pad body comprises a plurality of sponge layers, and the plurality of layers of the sponge layer have different hardnesses.
A method for preparing a face sponge pad for a VR device according to claim 1, comprising the steps of:

Main body sponge opening;

The main sponge of the material is hot pressed to form a ring structure;

Compressing the fabric layer;

The fabric layer is wrapped in a ring structure formed by hot pressing.
The preparation method according to claim 6, wherein the main body sponge is specifically:

Cutting a large piece of the main body sponge into small pieces of the main body sponge;

The main body sponge of the small piece is cut by a wire cutting method to form a main structure of the sponge pad.
The preparation method according to claim 6 or 7, wherein the hot pressing of the main body sponge to form a ring structure is specifically:

The unloaded main sponge is placed in a hot press mold and hot pressed.
The preparation method according to claim 8, wherein the hot press mold comprises a lower mold, an upper mold, and a sleeve fitted on the lower mold and located between the lower mold and the upper mold; The opened main body sponge is placed in the sleeve and extruded through the upper mold and the lower mold.
The preparation method according to claim 9, further comprising: bonding the main sponges of different hardnesses of different hot press forming into a single body in an arrangement in which the hardness is gradually lowered.
The preparation method according to any one of claims 6 to 10, wherein the hot pressing of the fabric layer is specifically:

Attaching a backing sponge to the fabric layer;

The fabric layer to which the backing sponge is attached is thermoformed.
The preparation method according to claim 11, wherein the backing sponge has a thickness of 1 to 10 mm.
The preparation method according to claim 11, wherein the annular structure in which the fabric layer is wrapped by hot pressing is specifically:

The fabric layer is wrapped on a thermoformed body sponge and the backing sponge is bonded to the thermoformed body sponge.
The preparation method according to any one of claims 6 to 13, further comprising: bonding a magic batt layer to the fabric layer covering the adhesive surface.
A VR device, comprising: a VR device body; and a VR device face sponge pad manufactured by the method according to any one of claims 6 to 14 connected to the VR device body.