CN113370607A - Intelligent wearable equipment shell and manufacturing method thereof - Google Patents
Intelligent wearable equipment shell and manufacturing method thereof Download PDFInfo
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- CN113370607A CN113370607A CN202110599604.2A CN202110599604A CN113370607A CN 113370607 A CN113370607 A CN 113370607A CN 202110599604 A CN202110599604 A CN 202110599604A CN 113370607 A CN113370607 A CN 113370607A
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- carbon fiber
- fiber prepreg
- layer
- insert
- wearable device
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Abstract
The invention provides an intelligent wearable device shell and a manufacturing method thereof, wherein the intelligent wearable device shell comprises an insert and a main body shell which is injection-molded on the insert; the main body shell fully covers the insert or is connected with the insert through a joint surface; and the insert comprises at least one layer of carbon fibre prepreg layup. By utilizing the intelligent wearable equipment shell, the problems of high overall weight and poor wear resistance of the existing intelligent wearable equipment shell can be effectively solved.
Description
Technical Field
The invention relates to the field of intelligent wearing, in particular to an intelligent wearing equipment shell and a manufacturing method thereof.
Background
The intelligent wearable application field is wide, and the market potential is huge; at present, the domestic virtual reality industry is still in the startup phase, and since 2015, the number of enterprises participating in the virtual reality field has increased greatly. Under the promotion of capital by a wide margin, will have more and more enterprises to involve in the virtual reality field, intelligent wearing equipment such as a large amount of wear glasses case, external display, VR glasses will further expand to consumption level market, and Chinese virtual reality's market scale will gradually meet the outbreak, consequently, also increases day by day to the attention degree of intelligent wearing equipment product.
The common material of intelligence wearing equipment shell is mainly PC, PA, PP, ABS etc. and the material design nature of the intelligence wearing equipment shell of this type of material is not enough, and shell weight is big, and it is poor to wear the travelling comfort, and the outward appearance treatment process is complicated. In addition, basic requirements of the intelligent wearable device on shell materials include anti-aging, light aging resistance, chemical corrosion resistance, good surface glossiness, easy coloring and the like, and the materials are difficult to meet all requirements. In addition, on the premise of meeting performance, the intelligent wearable device shell needs to meet the requirement of light weight as much as possible so as to improve the wearing comfort of a user; obviously, the existing intelligent wearable equipment shell cannot achieve the effect.
Based on the above technical problems, a high-strength low-quality intelligent wearable device shell is needed.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a smart wearable device housing and a manufacturing method thereof, so as to solve the problems of high overall weight and poor wear resistance of the existing smart wearable device housing.
The intelligent wearable equipment shell provided by the embodiment of the invention comprises an insert and a main body shell which is injection-molded on the insert; wherein the content of the first and second substances,
the main body shell fully covers the insert or is connected with the insert through a joint surface; and the number of the first and second electrodes,
the insert comprises at least one layer of carbon fibre prepreg layup.
In addition, the insert preferably comprises a foam layer and two layers of carbon fiber prepreg paving layers, and the two layers of carbon fiber prepreg paving layers are respectively arranged on the upper surface and the lower surface of the foam layer.
In addition, the preferable scheme is that the carbon fiber prepreg paving layer is a unidirectional carbon fiber prepreg paving layer; and the number of the first and second electrodes,
the unidirectional carbon fiber prepreg layup comprises at least two unidirectional carbon fiber prepreg layers.
In addition, the preferable scheme is that the carbon fiber prepreg paving layer is a bidirectional woven carbon fiber prepreg paving layer; and the number of the first and second electrodes,
the bidirectional woven carbon fiber prepreg layup comprises at least one bidirectional woven carbon fiber prepreg layer.
In addition, the preferable scheme is that the carbon fiber prepreg paving layer is a blended carbon fiber prepreg paving layer; and the number of the first and second electrodes,
the fiber layer of the blended carbon fiber prepreg paving layer comprises at least one of SRPP (self-reinforced PP), aramid fiber and glass fiber and carbon fiber, wherein the content of the carbon fiber is at least 50%.
Preferably, carbon fiber powder is added to a resin matrix in the carbon fiber prepreg layup; wherein the content of the first and second substances,
the mass content range of the carbon fiber powder in the resin matrix is 5-25%.
In addition, the preferable scheme is that the diameter range of the carbon fiber powder is 4-7 mu m, and the length range is 0.01-12 mm.
In addition, it is preferable that the material of the main body housing is engineering plastic or aluminum or a damping material.
On the other hand, the invention also provides a method for manufacturing the intelligent wearable device shell, which is used for manufacturing the intelligent wearable device shell; the method comprises the following steps:
preparing an insert, wherein the insert comprises at least one layer of carbon fiber prepreg paving layer;
and (3) insert injection molding, namely putting the insert into an injection mold, injecting a plastic material into the injection mold, and forming the intelligent wearable equipment shell after injection molding.
In addition, it is preferable that the process of preparing the insert includes:
preparing a carbon fiber prepreg paving layer;
laying the carbon fiber prepreg laying layer in a preset blank mold, and hot-pressing a blank semi-finished product;
trimming the blank intermediate product to form the insert.
Compared with the existing intelligent wearable equipment shell, the shell of the intelligent wearable equipment provided by the invention has smaller thickness on the premise of equivalent performance, so that the weight of the whole device is reduced; in addition, on the premise of the same shell thickness, the density can be smaller, and meanwhile, the performance cannot be lost; in addition, by adding the carbon fiber powder in the resin matrix, the cracking resistance is greatly improved, and the appearance can be optimized and the wear resistance can be enhanced; in addition, the shell of the intelligent wearable device provided by the invention is light in weight and high in strength, the density can be designed, and the lowest density of the insert can reach 0.5g/cm 3; the light-weight shell has strong designability; the insert has good binding force with the injection molding plastic, and is superior to other materials.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a perspective view of a housing of an intelligent wearable device according to an embodiment of the present invention;
FIG. 2 is a block diagram of a unidirectional carbon fiber prepreg ply provided by an embodiment of the present invention;
FIG. 3 is a structural diagram of a bidirectional woven carbon fiber prepreg ply provided by an embodiment of the invention;
FIG. 4 is a structural diagram of a foam layer and carbon fiber prepreg layers on the upper and lower sides thereof according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for manufacturing a housing of an intelligent wearable device according to an embodiment of the present invention;
wherein the reference numerals include: the device comprises a main body shell 11, an insert 12, a unidirectional carbon fiber prepreg laying layer 1, a bidirectional woven carbon fiber prepreg laying layer 3, a carbon fiber prepreg laying layer 4 and a foam layer 5.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
To describe the structure of the smart wearable device housing of the present invention in detail, specific embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a three-dimensional structure of a smart wearable device housing according to an embodiment of the present invention, and as can be seen from fig. 1, the smart wearable device housing according to the present invention includes an insert 12 as a housing support body and a body housing 11 injection-molded on the insert 12; the main body shell 11 completely covers the insert 12 or is connected with the insert 12 through a joint surface to form the integral structure of the intelligent wearable device shell provided by the embodiment of the invention, and a certain joint surface is designed between the main body shell 11 and the insert 12, even the main body shell 11 completely covers the insert 12, so that the defect generated at the joint of the insert 12 and the injection molding resin can be effectively avoided.
It should be noted that, in order to improve the high temperature resistance and the friction resistance of the intelligent wearable device shell and reduce the overall weight of the intelligent wearable device shell, the insert 12 includes at least one carbon fiber prepreg layer. Specifically, carbon fiber and its combined material possess characteristics such as excellent high temperature resistant, antifriction, electrically conductive, heat conduction and corrosion resistance, especially possess great advantage in the aspect of the shell lightweight, through introducing carbon fiber material and preparing corresponding prepreg spread layer structure, can reduce the holistic weight of intelligence wearing equipment shell by a wide margin under the performance prerequisite is satisfied, satisfies the many-sided performance demand of intelligence wearing shell simultaneously.
Specifically, fig. 2 shows a structure of a unidirectional carbon fiber prepreg layup 1 provided in an embodiment of the present invention, and as can be seen from fig. 2, the carbon fiber prepreg layup may be a unidirectional carbon fiber prepreg layup 1; and the unidirectional carbon fiber prepreg layup 1 comprises at least two unidirectional carbon fiber prepreg layers. The unidirectional carbon fiber prepreg paving layer 1 is a paving structure formed by at least two unidirectional carbon fiber prepreg layers which are paved up and down, in order to improve the structural performance of the unidirectional carbon fiber prepreg paving layer 1, the paving angle of the unidirectional carbon fiber prepreg paving layer 1 needs to be designed, for example, the angles of different layers can be designed to be 30/30/30/30 …, 90/90/90/90 …, 30/90/30/90 …, 45/45/45/45 … and the like, in addition, in order to meet the performance requirement of the insert 12, the thickness of a single-layer carbon fiber prepreg needs to be set between 30 and 125 micrometers, and the overall thickness of the unidirectional carbon fiber prepreg paving layer 1 needs to be less than or equal to 1.2 mm.
In addition, fig. 3 shows the structure of the bidirectional woven carbon fiber prepreg layup 3 provided by the embodiment of the invention, and as can be seen from fig. 3, the carbon fiber prepreg layup may also be the bidirectional woven carbon fiber prepreg layup 3; and the bidirectional woven carbon fiber prepreg layup 3 comprises at least one bidirectional woven carbon fiber prepreg layer. The two-way woven carbon fiber prepreg paving layer 3 is a paving structure formed by at least one two-way woven carbon fiber prepreg layer which is paved up and down, wherein the paving angle of the two-way woven carbon fiber prepreg layer is the same as that of the one-way carbon fiber prepreg paving layer 1, in addition, in order to meet the performance requirement of the insert 12, the thickness of the single-layer two-way woven carbon fiber prepreg needs to be set between 60 and 250 micrometers, and the whole thickness of the two-way woven carbon fiber prepreg paving layer 3 needs to be less than or equal to 1.2 mm.
The carbon fiber prepreg layup is formed by laying a plurality of carbon fiber prepreg layers (which may be unidirectional carbon fiber prepreg layers or bidirectional woven carbon fiber prepreg layers). The preparation process of the carbon fiber prepreg layer comprises the following steps: soaking a carbon fiber layer (comprising a unidirectional carbon fiber layer or a bidirectional woven carbon fiber layer) in a prepreg glue solution (a resin glue solution) to form a layer of resin matrix on the surface of the carbon fiber layer so as to form a fiber prepreg layer, wherein the resin matrix can be thermosetting resin, such as epoxy resin, phenolic resin, bismaleimide resin, polyester resin and the like; thermoplastic resins including polyimide resins, vinyl resins, and the like may also be used.
It should be noted that both the unidirectional carbon fiber prepreg paving layer 1 and the bidirectional woven carbon fiber prepreg paving layer 3 have corresponding advantages and disadvantages, and the carbon fiber prepreg selecting the unidirectional fiber paving layer (namely the unidirectional carbon fiber prepreg paving layer 1) has the advantages of easy design, low thickness and minimum 30 μm; the disadvantages are that: the prepreg has obvious orientation, edge crack defects can be caused in the using process of a certain direction, and the long fiber prepreg can cause large-batch slotting; the carbon fiber prepreg selective weaving prepreg laying layer (bidirectional weaving carbon fiber prepreg laying layer 3) has the advantages that the problem of anisotropy can be solved, and the defects of poor designability, fixed carbon fiber weaving angle, poor designability and thicker thickness are overcome. Based on the above problems, the kind of the carbon fiber prepreg can be selected according to actual needs.
In addition, in order to further improve the overall strength and the wear resistance of the carbon fiber prepreg paving layer, carbon fiber powder can be added into a resin matrix in the unidirectional carbon fiber prepreg layer or the bidirectional woven carbon fiber prepreg paving layer 3, the carbon fiber powder is long cylindrical particles prepared by long fiber surface treatment, process grinding, microscopic screening and high-temperature drying, the diameter range is 4-7 mu m, the length range is 0.01-12 mm, and the specific surface area is more than 0.321663m 2/g. The carbon fiber powder in the resin matrix is 5 to 25% by mass, and the carbon fiber powder is subjected to surface treatment (silane coupling agent, plasma treatment, or the like) and dispersion treatment (a dispersant is Methyl Cellulose (MC), sodium carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC), or the like), and the long fiber in the carbon fiber layer is 40 to 75% by mass.
By adding the carbon fiber powder into the resin matrix, the slotting defect caused by long fibers in the carbon fiber layer in the pre-soaking process can be improved, the overall strength and the wear resistance of the carbon fiber layer are improved, the carbon fiber grade is T600-T1000, and the modulus is M30-M60.
In addition, in order to further save cost, the carbon fiber prepreg paving layer can be set as a blended carbon fiber prepreg paving layer; and the fiber layer of the blended carbon fiber prepreg paving layer (corresponding to the carbon fiber layer in the carbon fiber prepreg paving layer) comprises at least one of SRPP (self-reinforced polypropylene), aramid and glass fiber and carbon fiber, wherein the content of the carbon fiber is at least 50%. At least one of SRPP, aramid fiber and glass fiber is selected and mixed with the carbon fiber, so that the using amount of the carbon fiber can be reduced and the manufacturing cost can be reduced on the premise of ensuring the performance. It should be noted that the laying process of the blended carbon fiber prepreg laying layer is the same as that of the unidirectional carbon fiber prepreg laying layer 1 or the bidirectional woven carbon fiber prepreg laying layer 3, and in order to meet the performance requirement of the insert 12, the overall thickness of the blended carbon fiber prepreg laying layer needs to be less than or equal to 2 mm.
In addition, in order to further reduce the overall weight of the VR device housing on the premise of ensuring various performance requirements of the intelligent wearable device housing, fig. 4 shows a foam layer 5 and a structure of carbon fiber prepreg layups on the upper and lower sides thereof provided by the embodiment of the invention, and as can be seen from fig. 4, the insert 12 can be designed into a sandwich structure; specifically, the carbon fiber prepreg layup may be provided in two layers, and the insert 12 further includes a foam layer 5; wherein, two layers of the carbon fiber prepreg paving layers are respectively arranged on the upper surface and the lower surface of the foam layer 5. Through set up carbon fiber prepreg and spread the layer on the upper and lower two surfaces at foam blanket 5, can make the whole carbon fiber prepreg that is of outer wall of inserts 12 spread the layer, ensure each item performance demand of guaranteeing intelligent wearing equipment shell to, because foam blanket 5 has lower weight under equal volume, can further reduce the whole weight of intelligent wearing equipment shell.
In the insert 12 with the sandwich structure, the carbon fiber prepreg paving layers 3 respectively arranged on the upper surface and the lower surface of the foam layer 5 are usually selected from bidirectional woven carbon fiber prepreg paving layers 3, and the surface density of the bidirectional woven carbon fiber prepreg paving layers 3 is usually set to be 70g/m2-300g/m 2; the thickness of the bidirectional woven carbon fiber prepreg laying layer 3 is 40-160 mu m. In addition, the foam material in the foam layer 5 can be selected from foams such as PMI and PET, the density is 0.07-0.3 g/cm3, and the thickness is 0.4-1.6 mm.
In addition, it is preferable that the main body housing 11 is an engineering plastic product (including a PC (polycarbonate) product, an ABS (acrylonitrile butadiene styrene copolymer) product, a PA (nylon) product, a composite material thereof, and the like), or an aluminum product or a damping material product.
In addition, in order to ensure the bonding performance between the main body housing 11 and the insert 12, the contact width of the front bonding surface needs to be more than or equal to 2 mm.
It should be noted that the intelligent wearable device may be wearable electronic devices such as a VR (virtual reality) device, a head glasses case, an external head-mounted display, and an AR device, and taking a VR device housing as an example, the VR device housing may include the insert 12 and a main body housing 11 injection-molded on the insert; wherein, the main body shell 11 fully covers the insert 12 or is connected with the insert 12 through a joint surface; also, insert 12 includes at least one layer of carbon fiber prepreg layup; through the VR equipment shell with the structure, the thickness of the VR equipment can be designed to be smaller, and the weight of the whole VR equipment is obviously reduced.
On the other hand, the invention also provides a method for manufacturing the intelligent wearable device shell, which is used for manufacturing the intelligent wearable device shell; the method comprises the following steps:
preparing an insert 12, wherein the insert 12 comprises at least one layer of carbon fiber prepreg paving;
and (3) performing injection molding on the insert 12, putting the insert 12 into an injection mold, injecting a plastic material into the injection mold, and forming the intelligent wearable equipment shell after injection molding.
Specifically, the process of preparing the insert 12 includes:
preparing a carbon fiber prepreg paving layer;
laying the carbon fiber prepreg laying layer in a preset blank mold, and hot-pressing a blank semi-finished product;
trimming the blank to form the insert 12.
In addition, fig. 5 shows a specific flowchart of a method for manufacturing a smart wearable device shell according to an embodiment of the present invention, and a process of the method for manufacturing a smart wearable device shell according to the embodiment of the present invention is described in detail below with reference to fig. 5.
Preparing a blank laying layer (namely a carbon fiber prepreg laying layer) according to the size requirement of the shell of the intelligent wearable device, wherein the main process comprises the steps of preparing the carbon fiber prepreg and laying the carbon fiber prepreg;
selecting a corresponding blank mold according to the structural requirements of the shell of the intelligent wearable device, and putting the prepared blank, namely a carbon fiber prepreg paving layer into the corresponding blank mold;
carrying out hot press molding to form a blank semi-finished product;
demoulding the semi-finished blank, and taking out the semi-finished blank;
trimming the blank semi-finished product;
the insert 12 is molded to form an intelligent wearable device shell product preliminarily;
and carrying out post-treatment on the shell product of the intelligent wearable device after injection molding, and inspecting and packaging.
Through the series of manufacturing processes, the intelligent wearable equipment shell provided by the invention can be manufactured to form a final product.
The smart wearable device housing and the method of making the same according to the present invention are described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the smart wearable device housing and the manufacturing method thereof without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (10)
1. The intelligent wearable equipment shell is characterized by comprising an insert and a main body shell, wherein the main body shell is formed on the insert in an injection molding mode; wherein the content of the first and second substances,
the main body shell fully covers the insert or is connected with the insert through a joint surface; and the number of the first and second electrodes,
the insert comprises at least one layer of carbon fibre prepreg layup.
2. The smart wearable device housing of claim 1, wherein,
the insert comprises a foam layer and two layers of carbon fiber prepreg paving layers; and the number of the first and second electrodes,
the two layers of the carbon fiber prepreg spread layers are respectively arranged on the upper surface and the lower surface of the foam layer.
3. The smart wearable device case of any one of claims 1 to 2,
the carbon fiber prepreg paving layer is a unidirectional carbon fiber prepreg paving layer; and the number of the first and second electrodes,
the unidirectional carbon fiber prepreg layup comprises at least two unidirectional carbon fiber prepreg layers.
4. The smart wearable device case of any one of claims 1 to 2,
the carbon fiber prepreg paving layer is a bidirectional woven carbon fiber prepreg paving layer; and the number of the first and second electrodes,
the bidirectional woven carbon fiber prepreg layup comprises at least one bidirectional woven carbon fiber prepreg layer.
5. The smart wearable device case of any one of claims 1 to 2,
the carbon fiber prepreg paving layer is a blended carbon fiber prepreg paving layer; and the number of the first and second electrodes,
the fiber layer of the blended carbon fiber prepreg paving layer comprises at least one of SRPP, aramid fiber and glass fiber and carbon fiber, wherein the content of the carbon fiber is at least 50%.
6. The smart wearable device housing of claim 1, wherein,
adding carbon fiber powder into a resin matrix in the carbon fiber prepreg paving layer; wherein the content of the first and second substances,
the mass content range of the carbon fiber powder in the resin matrix is 5-25%.
7. The smart wearable device housing of claim 6,
the diameter range of the carbon fiber powder is 4-7 mu m, and the length range is 0.01-12 mm.
8. The smart wearable device housing of claim 1, wherein,
the material of the main body shell is engineering plastics or aluminum or damping material.
9. A method for manufacturing a smart wearable device shell, which is used for manufacturing the smart wearable device shell as claimed in any one of claims 1 to 9; the method comprises the following steps:
preparing an insert, wherein the insert comprises at least one layer of carbon fiber prepreg paving layer;
and (3) insert injection molding, namely putting the insert into an injection mold, injecting a plastic material into the injection mold, and forming the intelligent wearable equipment shell after injection molding.
10. The method for manufacturing a smart wearable device housing as recited in claim 9, wherein the process of preparing the insert comprises:
preparing a carbon fiber prepreg paving layer;
laying the carbon fiber prepreg laying layer in a preset blank mold, and hot-pressing a blank semi-finished product;
trimming the blank intermediate product to form the insert.
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