Smart head-mounted device and housing therefor

Abstract

The application discloses an intelligent head-mounted device and a shell thereof. At least a part of the shell of the intelligent head-mounted device is formed into a lightened frame. The lightened frame is made of at least an organic aerogel material. The density of the lightened frame is 0.4 g / cm 3 -1.3 g / cm 3 The bending modulus of the lightened frame is greater than 2.5 GPa. According to the shell of the intelligent head-mounted device, at least a part of the shell is arranged as the lightened frame made of the organic aerogel material. The lightened frame made of the organic aerogel material has a large number of pores inside. By controlling the density and the bending modulus of the lightened frame, the lightened frame has lighter mass on the basis of meeting the stiffness requirement, so that the user wears more comfortably, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wearable devices, and more particularly, to a shell of a smart head-mounted device and a smart head-mounted device having the shell. BACKGROUND

[0002] Wearable devices are increasingly widely used in life, and user demand and experience of wearable devices are also increasing day by day. As a common wearable device, the shell of a VR device is usually made of injection molding material or carbon fiber composite structure for support. Although such materials have high strength, they greatly increase the weight of the product and reduce the user experience due to their high density. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a shell of a smart head-mounted device, which has the advantages of high strength and light weight.

[0004] Another object of the present application is to provide an electronic device composed of the shell of the smart head-mounted device described above.

[0005] To achieve the above objects, the present application provides the following technical solutions.

[0006] According to the shell of the smart head-mounted device of the first aspect of the present application, at least a part of the shell is formed into a lightened frame, the lightened frame is made of at least an organic aerogel material, the density of the lightened frame is 0.4g / cm 3 -1.3g / cm 3 , and the flexural modulus of the lightened frame is greater than 2.5GPa.

[0007] According to some embodiments of the present application, the shell is formed as a whole into the lightened frame.

[0008] According to some embodiments of the present application, the shell further comprises an auxiliary support part, which is bonded or integrally formed with the lightened frame as the shell.

[0009] According to some embodiments of the present application, the auxiliary support part is made of at least one of engineering plastics, stainless steel or light alloy.

[0010] According to some embodiments of the present application, the lightened frame further contains a reinforcing material, the mass percentage of the organic aerogel material in the total weight of the lightened frame is 30%-90%, and the mass percentage of the reinforcing material in the total weight of the lightened frame is 10%-70%; and / or, the specific modulus of the lightened frame is greater than 3.5GPa·cm 3 / g.

[0011] According to some embodiments of the present application, the organic aerogel material has a matrix skeleton and a pore structure, and the reinforcing material is reinforcing fibers distributed in the matrix skeleton and the pore structure.

[0012] According to some embodiments of the present application, the reinforcing material is at least one of carbon fibers, glass fibers, aramid fibers and PBO fibers.

[0013] According to some embodiments of the present application, the reinforcing material is at least one of chopped fiber powder, non-woven felt and fiber fabric.

[0014] According to some embodiments of the present application, the length of the reinforcing fibers is greater than 1mm.

[0015] According to some embodiments of the present application, the bending strength of the weight-reducing frame is greater than 30MPa.

[0016] According to some embodiments of the present application, the weight-reducing frame further contains a heat-conducting filler, and the heat-conducting filler is at least one of metal fillers and inorganic non-metal fillers.

[0017] According to some embodiments of the present application, the thermal conductivity of the heat-conducting filler is greater than 60W / m·K, and the thermal conductivity of the weight-reducing frame is greater than or equal to 0.55W / m·K.

[0018] According to some embodiments of the present application, the loss factor of the weight-reducing frame is greater than 0.01.

[0019] According to some embodiments of the present application, the organic aerogel includes at least one of polyimide, polyamide, polyester, aldehyde, polyolefin and polysaccharide.

[0020] According to some embodiments of the present application, the weight-reducing frame is a piece of non-transparent material.

[0021] According to some embodiments of the present application, the shell includes a main shell provided with a wearing part suitable for wearing, and a front shell connected with the main shell and cooperating with the main shell to define a containing space, wherein at least a part of the front shell and the main shell is formed as the weight-reducing frame.

[0022] The wearable device according to the second aspect of the embodiments of the present application includes the shell according to any one of the above embodiments, and an optical lens arranged in the shell.

[0023] The shell of the smart head-mounted device according to the embodiment of the present application is provided with a lightened frame made of organic aerogel material, and the lightened frame made of organic aerogel material has a large number of pores inside. The density and bending modulus of the lightened frame are controlled so that the lightened frame has lighter mass while meeting the rigidity requirement, and the user wears more comfortably, and the user experience is improved. DETAILED DESCRIPTION

[0024] The following description of at least one example embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.

[0025] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and devices can be considered part of the description of the present application.

[0026] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the example embodiments can have different values.

[0027] The shell of the smart head-mounted device according to the embodiment of the present application is described in detail first.

[0028] The shell of the smart head-mounted device according to the embodiment of the present application is provided with a lightened frame made of organic aerogel material, and the lightened frame made of organic aerogel material has a large number of pores inside. The density and bending modulus of the lightened frame are controlled so that the lightened frame has lighter mass while meeting the rigidity requirement, and the user wears more comfortably, and the user experience is improved. 3 -1.3g / cm 3 , and the bending modulus of the lightened frame is greater than 2.5GPa.

[0029] In other words, the shell of the smart head-mounted device according to the embodiment of the present application can be entirely formed of the lightened frame, or only part of the shell can be the lightened frame, and the rest of the shell can be made of conventional materials for the shell of the smart head-mounted device. The lightened frame can also be prepared by adding other reinforcing materials or reinforcing structures to the organic aerogel material. The density of the lightened frame is controlled to be between 0.4g / cm 3 -1.3g / cm 3 , such as 0.4g / cm 3 , 0.7g / cm 3 , 1g / cm 3 , 1.2g / cm 3 , 1.3g / cm 3 , etc., and the bending modulus of the lightened frame is set to be greater than 2.5GPa, which can meet the rigidity requirement of the shell.

[0030] It should be noted that the organic aerogel material is a solid material with high porosity and high specific surface area, and most of the volume is composed of air, and the density of the weight reduction frame can be adjusted by controlling the porosity, pore size and other parameters of the organic aerogel material. The bending modulus refers to the ability of the material to resist bending deformation within the elastic limit, and the bending modulus is the ratio of bending stress to deformation caused by bending. The bending performance is one of the important physical performance indicators of the shell of the smart head-mounted device, and the bending modulus is one of the important data for detecting whether the shell quality meets the standard. Generally, the greater the bending modulus of the shell, the stronger the stiffness and deformation resistance of the shell. The weight reduction frame prepared from the organic aerogel material can adjust its bending modulus by adjusting the porosity, pore size and other parameters of the organic aerogel material, so as to meet the requirement of high bending modulus.

[0031] Therefore, according to the shell of the smart head-mounted device according to the embodiment of the present application, at least a part of the shell is provided with a weight reduction frame prepared from an organic aerogel material, the weight reduction frame prepared from the organic aerogel material has a large number of pores inside, and by controlling the density and bending modulus of the weight reduction frame, the weight reduction frame has lighter weight on the basis of meeting the stiffness requirement, so as to make the user wear more comfortable and improve the user experience.

[0032] The structure of the shell of the smart head-mounted device can be reasonably set according to the specific needs of the smart head-mounted device, so as to meet different use requirements of the user. In some specific embodiments of the present application, the shell comprises a main shell and a front shell, the main shell is provided with a wearing part suitable for wearing, and the front shell is connected with the main shell and cooperates with the main shell to define a containing space, wherein at least a part of the front shell and the main shell is formed into a weight reduction frame.

[0033] In other words, the shell of the smart head-mounted device according to the embodiment of the present application mainly consists of two parts of a main shell and a front shell, wherein the main shell is provided with a wearing structure for wearing the smart head-mounted device, such as a head ring, a leg, etc., and the front shell is arranged at the front part of the main shell and cooperates with the main shell to form a containing space, which can be used to assemble the main board, optical assembly, heat dissipation piece and other structures of the smart head-mounted device. The main shell constitutes the main structure of the shell of the smart head-mounted device, and the weight of the shell of the smart head-mounted device is mainly concentrated on the main shell. During the preparation of the shell, the material ratio of the main shell and the front shell can be controlled respectively to make the main shell and the front shell meet different density and bending modulus requirements.

[0034] According to one specific embodiment of the present application, the shell is formed as a weight reduction frame.

[0035] That is to say, in the embodiment, the shell of the smart head-mounted device is entirely composed of the lightened frame, and the lightened frame is at least made of organic aerogel material. Therefore, the shell of the smart head-mounted device according to the embodiment of the present application is at least made of organic aerogel material. When the lightened frame is entirely made of organic aerogel material, the shell of the smart head-mounted device according to the embodiment of the present application is also made of organic aerogel material.

[0036] Therefore, by composing the shell of the smart head-mounted device entirely of the lightened frame, the shell of the structure can be made of organic aerogel material, which is convenient to make and can more accurately control the density and flexural modulus of the shell, thereby more accurately controlling the rigidity and lightweight degree of the shell and improving the overall designability of the shell of the smart head-mounted device.

[0037] In some specific embodiments of the present application, the shell further comprises an auxiliary support part which is bonded with the lightened frame or integrally formed with the shell.

[0038] In other words, in the embodiment, the shell of the smart head-mounted device is not only composed of the lightened frame but also composed of the lightened frame and the auxiliary support part. The auxiliary support part can be connected with the lightened frame by bonding or integrally formed with the lightened frame.

[0039] When the auxiliary support part is integrally formed with the lightened frame, the auxiliary support part can be formed in advance and then inlaid into a mold as a prefabricated insert to be injection molded or die pressed together with the organic aerogel material. Therefore, the shell of the structure has various preparation methods and can be flexibly adjusted according to the use requirements, which is more practical.

[0040] Optionally, according to an embodiment of the present application, the auxiliary support part is made of at least one of engineering plastics, stainless steel or lightweight alloy.

[0041] Specifically, the auxiliary support part can constitute the skeleton part of the shell of the smart head-mounted device. Selecting engineering plastics, stainless steel or lightweight alloy as the skeleton part of the shell can not only improve the overall strength and rigidity of the shell but also form a relatively complex shape to meet the production requirements of different products. The lightened frame made of organic aerogel material can serve as an auxiliary support structure of the shell of the smart head-mounted device, which can reduce the weight of the shell while meeting the overall strength and rigidity requirements of the shell.

[0042] In some optional embodiments of the present application, the weight-reducing framework further comprises a reinforcing material, the organic aerogel material accounts for 30-90% of the total weight of the weight-reducing framework, and the reinforcing material accounts for 10-70% of the total weight of the weight-reducing framework; and / or, the specific modulus of the weight-reducing framework is greater than 3.5 GPa·cm / g. 3 / g.

[0043] That is, the weight-reducing framework can be prepared from the organic aerogel material and the reinforcing material, wherein the organic aerogel material accounts for 30-90% of the total weight of the weight-reducing framework, and the remaining components are all reinforcing materials. For example, when the organic aerogel material accounts for 30% of the total weight of the weight-reducing framework, the reinforcing material accounts for 70%; when the organic aerogel material accounts for 40% of the total weight of the weight-reducing framework, the reinforcing material accounts for 60%; when the organic aerogel material accounts for 50% of the total weight of the weight-reducing framework, the reinforcing material accounts for 50%; and when the organic aerogel material accounts for 90% of the total weight of the weight-reducing framework, the reinforcing material accounts for 10%.

[0044] Since the organic aerogel material has a pore structure, the mass percentage of the organic aerogel material in the weight-reducing framework needs to be at least 30% to achieve the effect of continuous matrix reinforcement. If the content of the organic aerogel material is too high, the overall strength of the weight-reducing framework will be reduced. Therefore, the mass percentage of the organic aerogel material in the weight-reducing framework needs to be controlled to be no more than 90%, and the mass percentage of the reinforcing material in the weight-reducing framework needs to be controlled to be no more than 70%.

[0045] The specific modulus is the ratio of the modulus to the density of a material, which is an important indicator of the carrying capacity of the material. The greater the specific modulus of a material, the greater the rigidity of the material, and the greater the rigidity of the parts prepared from the material. According to the weight-reducing framework of the present application, the percentage of the reinforcing material therein can be adjusted to effectively meet the rigidity requirements.

[0046] Therefore, by adding the reinforcing material to the weight-reducing framework to cooperate with the organic aerogel material, the rigidity and strength of the weight-reducing framework can be further improved. On the basis of ensuring the rigidity and strength of the weight-reducing framework, the material usage of the weight-reducing framework can be further reduced, thereby achieving the effect of reducing the overall weight of the shell.

[0047] Optionally, according to an embodiment of the present application, the organic aerogel material has a matrix skeleton and a pore structure, and the reinforcing material is reinforcing fibers distributed in the matrix skeleton and the pore structure.

[0048] Specifically, the lightened frame of the shell of the smart head-mounted device can be composed of an organic aerogel material and reinforcing fibers, wherein the organic aerogel material with a porous structure can constitute an auxiliary support part of the lightened frame, and the reinforcing fibers in a fibrous structure can be uniformly distributed in the base skeleton and the porous structure of the organic aerogel material, so that the bending modulus of the organic aerogel composite material also increases accordingly, the porosity decreases, and the overall density increases, so that the volume of the lightened frame is not increased, and the strength of the lightened frame is enhanced.

[0049] In some optional embodiments of the present application, the reinforcing material can be at least one of carbon fibers, glass fibers, aramid fibers and PBO fibers.

[0050] Optionally, the reinforcing material can also be short fibers or continuous fibers in different states, wherein the reinforcing material can be at least one of short fiber powder, non-woven felt and fiber fabric. In this way, the source of the reinforcing material is extensive, and the cost is low, and the practicability is strong.

[0051] According to an embodiment of the present application, the length of the reinforcing fibers is greater than 1 mm. Since the reinforcing fibers are in a fibrous structure, if the length of the reinforcing fibers is too short, it is difficult to play a supporting role in increasing the strength, and the reinforcing effect on the lightened frame is poor. Therefore, by controlling the length of the reinforcing fibers, the reinforcing effect on the lightened frame can be ensured, so as to ensure the strength of the shell of the smart head-mounted device.

[0052] Considering the deformation or damage problems that may occur in the use of wearable devices, the shell of the smart head-mounted device has low strength, and the shell is prone to deformation and damage, thereby causing the product to be damaged. Therefore, it is necessary to ensure that the shell of the smart head-mounted device has a certain bending strength. In some specific embodiments of the present application, the bending strength of the lightened frame is greater than 30 MPa. In this way, the shell of the smart head-mounted device can have strong strength and is not prone to deformation and damage.

[0053] Optionally, according to an embodiment of the present application, the lightened frame further contains a heat-conducting filler, and the heat-conducting filler is at least one of a metal filler and an inorganic non-metal filler.

[0054] Specifically, the thermal conductivity of the heat-conducting filler is greater than 60 W / m·K, and the thermal conductivity of the lightened frame is greater than or equal to 0.55 W / m·K.

[0055] It should be noted that the housing of a smart head-mounted device typically includes a main housing and a front cover. An optical lens is housed within the housing, which generates heat during operation. To dissipate this heat, a thermally conductive filler can be incorporated into the weight-reducing frame. Specifically, a thermally conductive material can be added to an organic aerogel material to form the housing of the smart head-mounted device. The thermally conductive filler can be a metal filler or a mixture of one or more highly thermally conductive inorganic non-metallic fillers, preferably boron nitride or graphene.

[0056] Therefore, by adding thermally conductive fillers to the housing of a smart head-mounted device, the housing's thermal conductivity can be improved, thereby enhancing the wearable device's heat dissipation while meeting the housing's rigidity and quality requirements. Considering that the main housing of a smart head-mounted device comes into direct contact with the human body while the front housing does not, appropriate thermally conductive fillers can be added to the front housing to increase its thermal conductivity and prevent heat from being transferred to the human body, which would affect the user's wearing experience.

[0057] In some embodiments of the present invention, the loss factor of the reduced weight frame is greater than 0.01.

[0058] An optical lens is installed in the shell of the smart head-mounted device. The weight-reducing frame of the shell is made of at least organic aerogel material, and the organic aerogel material has a pore structure. By controlling the loss factor of the weight-reducing frame, it has better damping. When stress acts on the pore structure inside the organic aerogel material, the skeleton of the organic aerogel material is deformed, and the fluid in the pore structure is expelled. Expelling the viscous fluid inside the pore structure requires work, resulting in energy loss. During vibration, mechanical energy is converted into internal energy, thereby protecting the optical lens in the wearable device shell and preventing it from being damaged by impact.

[0059] According to one embodiment of the present invention, the organic aerogel includes at least one of polyimides, polyamides, polyesters, aldehydes, polyolefins and polysaccharides.

[0060] Specifically, aerogel refers to a nano-scale porous solid material formed by drying the liquid phase in the gel by replacing the gas through the sol-gel method, and the aerogel also has the properties of a gel. In the present application, the organic aerogel can be an aerogel made of a high molecular organic material, which not only has the characteristics of being porous and lightweight, but also has a longer chain length than inorganic aerogel materials and has a certain strength, making it suitable for making shells with certain mechanical requirements. In practical applications, one or more of the above-mentioned organic aerogel materials can be selected according to the actual needs of wearable devices, which are more applicable.

[0061] In some specific embodiments of the present invention, the weight-reducing frame is a piece of non-transparent material.

[0062] That is, the shell of the smart head-mounted device is made of an opaque material as a whole, and the color of the shell can be adjusted by adding a material of a corresponding color to the organic aerogel.

[0063] The wearable device according to the embodiment of the present application includes the shell of the smart head-mounted device according to the above-mentioned embodiment, and the optical lens is arranged in the shell. The wearable device can be an electronic device such as a VR device, which is not limited in the present application.

[0064] Since the shell of the smart head-mounted device according to the above-mentioned embodiment of the present application has the above-mentioned technical effects, the wearable device according to the embodiment of the present application also has corresponding technical effects, that is, the weight of the wearable device can be greatly reduced, and the wearing is more comfortable.

[0065] The shell of the smart head-mounted device according to the present application will be described in detail below in combination with specific embodiments and comparative examples.

[0066] Embodiment

[0067] First, the organic aerogel composite material is prepared: a polyimide hydrogel is synthesized, and then short carbon fibers with a length of 3 mm are added, and the mass content of the short carbon fibers accounts for 50%, to obtain an organic aerogel composite material containing reinforcing fibers.

[0068] The prepared organic aerogel composite material is injected into a mold to form the shell in one piece, and then freeze-dried and imidized to obtain the final shell one, wherein the porosity of the shell is 47%.

[0069] Comparative Example

[0070] The shell two is integrally injection molded by PC. The structure and size of the shell two in the comparative example are the same as those of the shell one in the embodiment.

[0071] The shells prepared in the embodiment and the comparative example are respectively subjected to mass, bending modulus and damping tests, and the test results are shown in Table 1.

[0072] Table 1 Test results of shells

[0073] case Example Comparative Example Mass / g 105 147 Density / g / cm 3 ]] 0.9 1.25 Flexural modulus / GPa 5.6 3.5 Specific modulus / GPa-cm 3 / g]] 6.2 2.8 loss factor 0.03 0.01

[0074] As can be seen from Table 1, in the case of the same structure and size of the shell one and the shell two, the mass of the shell one using the organic aerogel composite material in the embodiment is only 71.5% of the mass of the shell two formed by injection molding, and the weight reduction reaches 28.5%, and at the same time, the flexural modulus of the shell one using the organic aerogel composite material in the embodiment is 1.6 times of the flexural modulus of the shell two formed by injection molding in the comparative example, and the specific modulus of the shell one using the organic aerogel composite material in the embodiment is 2.2 times of the specific modulus of the shell two formed by injection molding in the comparative example, the flexural modulus and the specific modulus can be used to measure the damage resistance of the product, and it is indicated that the shell one using the organic aerogel composite material according to the embodiment of the present application not only has better strength and damage resistance, but also can greatly reduce the product weight and improve the wearing comfort of the user on the basis of ensuring the strength of the product structure design.

[0075] Through the test on the damping of the shell one using the organic aerogel composite material in the embodiment and the damping of the shell two formed by injection molding, it can be seen that the loss factor of the shell one using the organic aerogel composite material is 0.03, which is greater than the loss factor of the shell two formed by injection molding in the comparative example, and it is indicated that the pore and long-chain structure of the organic aerogel composite material makes the shell one have good damping property.

[0076] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A housing of a smart head-mounted device, characterized in that: At least a portion of the shell is formed into a weight-reducing frame, and the weight-reducing frame is made of at least an organic aerogel material and a reinforcing material. The organic aerogel material has a matrix skeleton and a pore structure, and the reinforcing material is a reinforcing fiber distributed in the matrix skeleton and the pore structure. A thermally conductive filler is further added to the organic aerogel material, and the organic aerogel material with the thermally conductive filler is used as a preparation material for the front shell of the shell. The thermal conductivity of the thermally conductive filler is greater than 60 W / m·K, and the thermal conductivity of the weight-reducing frame is greater than or equal to 0.55 W / m·K. The density of the weight-reducing frame is 0.4 g / cm 3 -1.3g / cm 3 , the bending modulus of the weight-reducing frame is greater than 2.5 GPa.

2. The housing of the smart head-mounted device according to claim 1, wherein: The housing is integrally formed as the weight-reducing frame.

3. The housing of the smart head-mounted device according to claim 1, wherein: The shell further includes an auxiliary support portion, and the auxiliary support portion is bonded to the weight-reducing frame or integrally formed into the shell.

4. The housing of the smart head-mounted device according to claim 3, wherein: The auxiliary support part is made of at least one of engineering plastics, stainless steel or light alloy.

5. The housing of the smart head-mounted device according to claim 1, wherein: The mass percentage of the organic aerogel material to the total weight of the weight-reducing frame is 30%-90%, and the mass percentage of the reinforcing material to the total weight of the weight-reducing frame is 10%-70%; And / or, the specific modulus of the weight-reducing frame is greater than 3.5 GPa·cm 3 / g.

6. The housing of the smart head-mounted device according to claim 1, wherein: The reinforcing material is at least one of carbon fiber, glass fiber, aramid fiber and PBO fiber.

7. The housing of the smart head-mounted device according to claim 1, wherein: The reinforcing material is at least one of chopped fiber powder, non-woven felt and fiber fabric.

8. The housing of the smart head-mounted device according to claim 1, wherein: The length of the reinforcing fibers is greater than 1 mm.

9. The housing of the smart head mounted device according to claim 1, wherein: The bending strength of the weight-reducing frame is greater than 30 MPa.

10. The housing of the smart head mounted device according to claim 1, wherein: The thermally conductive filler is at least one of a metal filler and an inorganic non-metal filler.

11. The housing of the smart head mounted device according to claim 1, wherein: The loss factor of the weight-reducing frame is greater than 0.

01.

12. The housing of the smart head mounted device according to any one of claims 1 to 11, wherein: The organic aerogel includes at least one of polyimides, polyamides, polyesters, aldehydes, polyolefins and polysaccharides.

13. The housing of the smart head mounted device according to any one of claims 1 to 11, characterized in that: The weight-reducing frame is made of a non-transparent material.

14. The housing of the smart head mounted device according to any one of claims 1 to 11, characterized in that: The housing comprises: A main shell, wherein the main shell is provided with a wearing portion suitable for wearing; A front shell is connected to the main shell and cooperates with the main shell to define a receiving space, wherein at least a portion of the front shell and the main shell forms the weight-reducing frame.

15. A wearable device, characterized in that: include: The housing according to any one of claims 1 to 14; An optical lens is arranged on the housing.