Wearable device

Abstract

The application discloses a wearable device, comprising: a frame; an optical assembly arranged in the frame; a temple connected with the frame, wherein at least a part of the frame and / or the temple is formed into a lightened frame, the lightened frame is made of at least an organic aerogel material, the bending strength of the lightened frame is greater than 30 MPa, and the density of the lightened frame is 0.5 g / cm 3 -1.6 g / cm 3 The wearable device according to the embodiment of the application, by arranging at least a part of the frame or the temple into a lightened frame made of organic aerogel material, the lightened frame made of organic aerogel material has a large number of pores inside, by controlling the bending strength and the density of the lightened frame, the lightened frame has lighter mass on the basis of meeting the rigidity requirement, 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 specifically, to a wearable device. Background Art

[0002] AR glasses are currently a common wearable device. The temples of AR glasses are usually supported by metal stainless steel, aluminum alloy, titanium alloy or carbon fiber composite structures. Although these materials are strong, their high density greatly increases the weight of the product and reduces the user experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a wearable device that can effectively reduce product weight and improve user experience.

[0004] In order to achieve the above objectives, the present invention provides the following technical solutions.

[0005] A wearable device according to an embodiment of the present invention comprises: a frame; an optical assembly, the optical assembly being disposed on the frame; and temples, the temples being connected to the frame, wherein at least a portion of the frame and / or the temples is formed as a weight-reducing frame, the weight-reducing frame being made of at least an organic aerogel material, the bending strength of the weight-reducing frame being greater than 30 MPa, and the density of the weight-reducing frame being 0.5 g / cm 3 -1.6g / cm 3 .

[0006] According to some embodiments of the present invention, the organic aerogel material has a matrix portion and a pore structure, and the weight-reducing frame further contains a reinforcing material, which is distributed in the matrix portion and the pore structure. The mass percentage of the reinforcing material in the total weight of the weight-reducing frame is 0-70%.

[0007] According to some embodiments of the present invention, at least a portion of the frame is formed as the weight-reducing frame, the mass percentage of the organic aerogel material in the frame to the total weight of the weight-reducing frame is 30%-90%, and the density of the frame is 0.6 g / cm 3 -1.4g / cm 3 .

[0008] According to some embodiments of the present invention, the temple comprises an outer frame and an inner cover plate, and at least a portion of the outer frame and the inner cover plate is formed as the weight-reducing frame.

[0009] According to some embodiments of the present application, the mass percentage of the organic aerogel material in the outer frame to the total weight of the weight-reducing frame in the outer frame is 30%-80%, the bending strength of the outer frame is greater than 50MPa, and the density of the outer frame is 0.8g / cm 3 -1.6g / cm 3 .

[0010] According to some embodiments of the present application, the mass percentage of the organic aerogel material in the inner cover plate to the total weight of the weight-reducing frame in the inner cover plate is 30%-100%.

[0011] According to some embodiments of the present application, the porosity of the inner cover plate is 30%-70%, and the thermal conductivity of the inner cover plate is less than 0.05W / m·K.

[0012] According to some embodiments of the present application, the inner side of the temple is provided with a main plate, and the pore structure of the organic aerogel material comprises a plurality of through holes, and the axis of the through hole in the outer frame is perpendicular to the main plate.

[0013] According to some embodiments of the present application, the weight-reducing frame of the outer frame further contains a thermal conductive filler, and the thermal conductive filler is at least one of a metal filler and an inorganic non-metal filler.

[0014] According to some embodiments of the present application, the thermal conductivity of the thermal conductive filler is greater than 50W / m·K, and / or the mass content of the thermal conductive filler is 0-20% of the weight-reducing frame.

[0015] According to some embodiments of the present application, the reinforcing material is at least one of carbon fiber, glass fiber, aramid fiber and PBO fiber.

[0016] 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.

[0017] According to some embodiments of the present application, the fiber length of the reinforcing material is greater than 1mm.

[0018] According to some embodiments of the present application, the organic aerogel comprises at least one of polyimide, polyamide, polyester, aldehyde, polyolefin and polysaccharide.

[0019] The wearable device according to the embodiments of the present application, by setting at least a part of the frame or the temple as a weight-reducing frame made of organic aerogel material, the weight-reducing frame made of organic aerogel material has a large number of pores inside, by controlling the bending strength and density of the weight-reducing frame, the weight-reducing frame has lighter mass on the basis of meeting the rigidity requirement, so that the user wears more comfortable, and the user experience is improved. DETAILED DESCRIPTION

[0020] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application or its application and uses.

[0021] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, the techniques, methods, and devices are sufficiently described herein for the purposes of the disclosure.

[0022] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of exemplary embodiments can have different values.

[0023] A wearable device according to an embodiment of the present application is described in detail below.

[0024] A wearable device according to an embodiment of the present application includes a frame, an optical assembly, and a temple.

[0025] Specifically, the optical assembly is provided in the frame, and the temple is connected to the frame, wherein at least a portion of the frame and / or the temple is formed as a lightened frame, the lightened frame is made of at least an organic aerogel material, the lightened frame has a bending strength greater than 30 MPa, and the lightened frame has a density of 0.5 g / cm 3 -1.6 g / cm 3 .

[0026] In other words, the wearable device according to an embodiment of the present application can be AR glasses or smart glasses, and the wearable device mainly includes a frame, an optical assembly provided in the frame, and a temple for supporting the frame. The temple and the frame can be connected by embedding, and the frame and other components can be connected by gluing or embedding. A portion of the frame can be formed of a lightened frame, or the entire frame can be formed of a lightened frame. A portion of the temple can be formed of a lightened frame, or the entire temple can be formed of a lightened frame. The lightened frame can 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 0.5 g / cm 3 -1.6 g / cm 3 , for example, 0.5 g / cm 3 , 0.8 g / cm 3 , 1 g / cm 3 , 1.2 g / cm 3 , 1.6 g / cm 3 , etc., and the bending strength of the lightened frame is set to be greater than 30 MPa, which can meet the rigidity needs of the shell and resist destructive deformation.

[0027] It should be noted that the organic aerogel material is a solid material with high porosity and high specific surface area, most of the volume of which 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 strength reflects the bending resistance of the material, that is, the bending strength. The bending performance is one of the important physical performance indicators of the shell of the wearable device, and the bending strength is one of the important data for detecting whether the quality of the shell meets the standard. Generally, the greater the bending strength of the shell, the stronger the rigidity and anti-deformation ability of the shell. The weight reduction frame prepared from the organic aerogel material can adjust its bending strength by adjusting the porosity, pore size and other parameters of the organic aerogel material, so as to meet the requirement of high bending strength.

[0028] Therefore, according to the wearable device of the embodiment of the present application, by setting at least part of the frame or the temple to contain the weight reduction frame prepared from the organic aerogel material, the weight reduction frame prepared from the organic aerogel material has a large number of pores inside, and by controlling the bending strength and density of the weight reduction frame, the weight reduction frame has lighter mass on the basis of meeting the rigidity requirement, so that the user wears more comfortably, and the user experience is improved.

[0029] In some specific embodiments of the present application, the organic aerogel material has a matrix part and a pore structure, and the weight reduction frame further contains a reinforcing material, the reinforcing material being distributed in the matrix part and the pore structure, and the mass percentage of the reinforcing material in the total weight of the weight reduction frame being 0-70%.

[0030] That is, the weight reduction frame can be prepared from the organic aerogel material and the reinforcing material, the organic aerogel material having a matrix part structure, and a plurality of pores being arranged on the matrix part, and when the weight reduction frame is prepared from the organic aerogel material and the reinforcing material, the reinforcing material is distributed in the matrix part and the pore structure.

[0031] It should be noted that the mass content of the reinforcing material in the weight reduction frame can be controlled to be between 0-70%, and the addition of the reinforcing material in the weight reduction frame can improve the bending strength thereof, but the content of the reinforcing material and the aerogel needs to be balanced. When the mass percentage of the reinforcing material in the total weight of the weight reduction frame is 0, that is, no reinforcing material is added in the weight reduction frame, in this case, the weight reduction frame can have lighter mass. When the mass percentage of the reinforcing material in the total weight of the weight reduction frame is greater than 0, the weight of the reinforcing material can be controlled to be within 70% of the total weight of the weight reduction frame. Although the higher the content of the reinforcing material, the higher the bending strength of the weight reduction frame, but when the content of the reinforcing material reaches a certain degree, the content of the aerogel as the matrix material decreases, and the increase of the reinforcing material will lead to the decrease of the strength, therefore, the upper limit of the content of the reinforcing material added in the weight reduction frame is 70%.

[0032] Therefore, by matching the reinforcing material with the organic aerogel material in the lightened frame, the reinforcing fibers are in a fibrous structure and can be uniformly distributed in the matrix skeleton and pore structure of the organic aerogel material, so that the bending modulus of the organic aerogel composite material is increased accordingly, the porosity is reduced, and the overall density is increased, so that the volume of the lightened frame is not increased, and the strength of the lightened frame is enhanced.

[0033] Optionally, according to an embodiment of the present application, at least a part of the frame is formed as a lightened frame, and the mass percentage of the organic aerogel material in the lightened frame in the total weight of the lightened frame in the frame is 30%-90%, and the density of the frame is 0.6g / cm 3 -1.4g / cm 3 .

[0034] In other words, in the present embodiment, a part of the frame can be a lightened frame, and the frame as a whole can also be completely formed by the lightened frame. Among them, the total weight of the organic aerogel material in the lightened frame of the frame accounts for 30%-90% of the total weight of the lightened frame of the frame, and the remaining ingredients can be composed of fillers. The filler can only include reinforcing materials, or the filler can include reinforcing materials and heat dissipation materials at the same time. For example, when the mass percentage of the organic aerogel material in the lightened frame is 30%, the mass percentage of the filler is 70%; when the mass percentage of the organic aerogel material in the lightened frame is 40%, the mass percentage of the filler is 60%; when the mass percentage of the organic aerogel material in the lightened frame is 50%, the mass percentage of the filler is 50%; when the mass percentage of the organic aerogel material in the lightened frame is 90%, the mass percentage of the filler is 10%.

[0035] At the same time, since the weight of the frame in the wearable device accounts for a large proportion of the overall weight, the weight of the frame greatly affects the overall weight of the wearable device, and the frame part is used to bear the optical assembly and needs to have a certain strength to play a supporting role, therefore, in the present embodiment, the density of the frame is 0.6g / cm 3 -1.4g / cm 3 , for example, it can be 0.6g / cm 3 , 0.8g / cm 3 , 1g / cm 3 , 1.4g / cm 3 The smaller the density of the frame, the lighter the mass on the basis of ensuring the strength of the product, so as to further reduce the overall weight of the wearable device.

[0036] It should be noted that the higher the dielectric constant of a structure, the more charge it will generally store, and the greater the dielectric loss, thereby affecting the transmission of electromagnetic waves in the structure. The frame part of the AR glasses in the prior art is usually made of injection molding material or metal parts. Since the dielectric loss of injection molding material and metal material is large, it will affect the transmission of electromagnetic waves, so an antenna window needs to be reserved in the frame part, which not only increases the difficulty of preparing the frame, but also reduces the strength of the frame to some extent due to the window design.

[0037] In some embodiments of the present application, the frame can be composed of a front cover and a rear cover. By controlling the proportion of the weight-reducing frame in the frame and the proportion of the organic aerogel material in the weight-reducing frame, the dielectric constant of at least one of the front cover and the rear cover can be between 2.5 and 3.8, and the dielectric loss is less than 3*10 -3 That is, the dielectric constant of the front cover can be between 2.5 and 3.8, and the dielectric constant of the rear cover can also be between 2.5 and 3.8.

[0038] Therefore, by controlling the proportion of the organic aerogel material in the frame, the dielectric constant and dielectric loss of the frame can be adjusted, and the loss in the process of electromagnetic wave transmission can be reduced, so that the window in the frame can be avoided, the structural integrity of the frame is ensured, and the strength of the frame is improved.

[0039] According to an embodiment of the present application, the temple includes an outer frame and an inner cover plate, at least a part of the outer frame and the inner cover plate being formed as a weight-reducing frame.

[0040] That is, in this embodiment, the temple is composed of an outer frame and an inner cover plate, a part of the outer frame can be a weight-reducing frame, the whole of the outer frame can also be composed of a weight-reducing frame, and a part of the inner cover plate can be a weight-reducing frame, the whole of the inner cover plate can also be composed of a weight-reducing frame.

[0041] Considering that the physical properties and structural characteristics of the outer frame and the inner cover plate constituting the temple are different, therefore, the material ratio of the outer frame and the inner cover plate also has corresponding differences.

[0042] In some embodiments of the present application, the mass percentage of the organic aerogel material in the outer frame to the total weight of the weight-reducing frame in the outer frame is 30%-80%, the bending strength of the outer frame is greater than 50MPa, and the density of the outer frame is 0.8g / cm 3 -1.6g / cm 3 .

[0043] In other words, the outer frame of the temple plays a major role in supporting the frame, and therefore, in the outer frame, the proportion of organic aerogel material is relatively low, and the content of reinforcing material is relatively high, which can ensure that the overall strength of the outer frame is relatively high, and the density is relatively large, for example, it can be 0.8g / cm 3 , 1g / cm 3 , 1.2g / cm 3 , 1.6g / cm 3 , etc., which can play a better supporting role to prevent the temple from deforming.

[0044] The inner cover plate of the temple is not the main force component for supporting the frame, and the structure is close to the user, so the inner cover plate needs to have certain heat insulation performance.

[0045] Based on this, in some specific embodiments of the present application, the mass percentage of the organic aerogel material in the inner cover plate in the total weight of the weight-reducing frame of the inner cover plate is 30%-100%.

[0046] Optionally, the porosity of the inner cover plate is 30%-70%, and the thermal conductivity of the inner cover plate is less than 0.05W / m·K.

[0047] Specifically, when the organic aerogel material is formed, a large number of pore structures are formed inside, and a large amount of air is filled in the pore structures, and the thermal conductivity is very low. Therefore, the content of the organic aerogel material in the inner cover plate is relatively high, or the inner cover plate can be completely prepared from the organic aerogel material, and the porosity can be controlled between 30%-70% by adjusting the forming process, which can effectively reduce the thermal conductivity of the inner cover plate, so that the temple has excellent heat insulation performance.

[0048] According to one embodiment of the present application, the temple is provided with a main plate, and the pore structure of the organic aerogel material includes a plurality of through holes, and the axis of the through hole in the outer frame is perpendicular to the main plate.

[0049] That is, the temple is also provided with a main plate structure, and the through hole in the organic aerogel material in the outer frame of the temple has directivity, and the axis of the through hole is perpendicular to the plane where the main plate is located. The axis of the through hole and the plane where the main plate is located can also be in a substantially perpendicular state, that is, there is a certain angular deviation relative to the perpendicular state, so that the thermal conductivity of the organic aerogel material in the extension direction of the through hole is greater than or equal to 0.5W / m*K.

[0050] Therefore, by controlling the extension direction of the through hole in the organic aerogel material in the outer frame, the extension direction of the through hole in the outer frame is perpendicular to the main plate, which can make the heat dissipation channel of the main plate as short as possible, and can effectively improve the heat dissipation effect of the main plate and improve the heat dissipation efficiency.

[0051] In some optional embodiments of the present application, the heat-conductive filler is at least one of a metal filler and an inorganic non-metal filler. Further, the heat-conductive filler has a thermal conductivity greater than 50 W / m·K, and / or the mass content of the heat-conductive filler is 0-20% of the lightened frame.

[0052] In other words, in order to improve the heat dissipation effect of the outer frame, a heat-conductive filler can be filled in the lightened frame of the outer frame, i.e., a heat-conductive material can be added to the organic aerogel material to jointly prepare the outer frame. The heat-conductive filler can be one or a mixture of multiple of a metal filler or a high-thermal-conductivity inorganic non-metal filler, and is preferably boron nitride or graphene.

[0053] It should be noted that although the higher the content of the heat-conductive filler, the better the heat-conductive effect of the outer frame of the glasses leg, but considering that the increase of the heat-conductive filler will increase the weight of the glasses leg to a certain extent, if the content of the heat-conductive filler is too high, it is difficult to achieve the effect of lightening the glasses leg. Therefore, in some specific embodiments of the present application, the weight of the heat-conductive filler can be controlled to be between 0-20% of the lightened frame of the outer frame of the glasses leg. When the content of the heat-conductive filler in the lightened frame of the outer frame is 0, it means that the outer frame does not contain the heat-conductive filler, at this time, although the heat conductivity of the outer frame is relatively poor, but the weight of the outer frame can be reduced to the maximum extent. When the content of the heat-conductive filler in the lightened frame of the outer frame is 20%, the outer frame can have a certain heat dissipation effect on the basis of reducing the weight of the outer frame.

[0054] Therefore, by adding the heat-conductive filler in the outer frame, the heat conductivity of the outer frame can be improved, so as to improve the heat dissipation effect of the wearable device on the basis of meeting the rigidity and mass requirements of the outer frame.

[0055] According to some embodiments of the present application, the reinforcing material can be at least one of carbon fiber, glass fiber, aramid fiber and PBO fiber.

[0056] Optionally, the reinforcing material can also be short-cut fibers or continuous fibers in different states, wherein the reinforcing material can be at least one of short-cut fiber powder, non-woven felt and fiber fabric. Therefore, the source of the reinforcing material is extensive, and the cost is low, and the practicability is strong.

[0057] According to an embodiment of the present application, the length of the reinforcing fiber is greater than 1 mm. Since the reinforcing fiber is in a fibrous structure, if the length of the reinforcing fiber 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 fiber, the reinforcing effect on the lightened frame can be ensured, so as to ensure the strength of the shell of the wearable device.

[0058] According to one embodiment of the present application, the organic aerogel comprises at least one of a polyimide type, a polyamide type, a polyester type, an aldehyde type, a polyolefin type, and a polysaccharide type.

[0059] Specifically, the aerogel refers to a kind of nano-porous solid material formed by replacing the liquid phase in the gel with gas after drying by the sol-gel method, and the aerogel also has the properties of the gel. In the present application, the organic aerogel can be an aerogel made of high molecular organic material, which not only has the characteristics of porosity and light weight, but also has a certain strength compared with inorganic aerogel material due to its longer chain length, and is suitable for making wearable devices with certain mechanical requirements. In practical application, one or several of the above-mentioned organic aerogel materials can be selected according to the actual needs of the wearable device, which is more applicable.

[0060] The wearable device of the present application will be described in detail below in combination with specific examples and comparative examples.

[0061] Examples

[0062] First step, preparing the outer frame of the temple of the wearable device.

[0063] Synthesize polyimide aerogel, then add chopped carbon fibers with a length of 10 mm, the mass content of the chopped carbon fibers accounts for 35%, and inject the mold to integrally form the outer frame of the temple, then freeze-dry and imidize to obtain the final outer frame of the temple.

[0064] Second step, preparing the inner cover plate of the temple of the wearable device.

[0065] Synthesize polyimide aerogel, then add chopped carbon fibers with a length of 3 mm, the mass content of the chopped carbon fibers accounts for 10%, and inject the mold to integrally form the inner cover plate of the temple.

[0066] Third step, assembling the temple.

[0067] The speaker, battery, mainboard, etc. are loaded in the outer frame, and then the inner cover plate is loaded in the form of inlaying.

[0068] Comparative example

[0069] The outer frame of the temple is prepared by aluminum alloy, and the inner cover plate is prepared by PC particle injection molding. The structure and size of the aluminum alloy + PC temple in the comparative example are the same as those of the temple in the example.

[0070] The temples prepared in the example and the comparative example are tested for mass and density, and the test results are shown in Table 1.

[0071] Table 1 Test results of temples

[0072] Temple Examples Comparative examples Lateral frame density / g / cm 3 ]] 0.92 2.68 Inner cover density / g / cm 3 ]] 0.6 1.3 Mass / g 67 154

[0073] As can be seen from Table 1, in the case where the structures and sizes of the temple arms of the embodiments and the comparative examples are the same, the density of the outer frame using the organic aerogel composite material in the embodiments is only about one third of the density of the outer frame using the aluminum alloy in the comparative examples, the density of the inner cover plate using the organic aerogel composite material in the embodiments is only about one half of the density of the inner cover plate using the aluminum alloy in the comparative examples, and the mass of the temple arm using the organic aerogel composite material in the embodiments is only 43.5% of the mass of the temple arm using the aluminum alloy in the comparative examples, with a weight reduction of 56.5%, indicating that the temple arm using the organic aerogel composite material according to the embodiments of the present application can greatly reduce the product weight and improve the wearing comfort of the user.

[0074] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting 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 wearable device, characterized in that: include: Frames; an optical component, the optical component being arranged on the frame; temples, the temples being connected to the frame, At least a portion of the frame and / or the temples is formed as a weight-reducing frame, the weight-reducing frame is made of at least an organic aerogel material, the bending strength of the weight-reducing frame is greater than 30 MPa, and the density of the weight-reducing frame is 0.5 g / cm 3 -1.6g / cm 3 ; The temple comprises an outer frame and an inner cover plate, wherein at least a portion of the outer frame and the inner cover plate is formed as the weight-reducing frame; The porosity of the inner cover plate is 30%-70%, and the thermal conductivity of the inner cover plate is less than 0.05 W / m·K; The weight-reducing frame of the outer frame also contains a thermally conductive filler, which is at least one of a metal filler and an inorganic non-metallic filler, and the thermal conductivity of the thermally conductive filler is greater than 50W / m·K; a main board is provided in the temple, and the pore structure of the organic aerogel material includes a plurality of through holes, the axes of the through holes in the outer frame are perpendicular to the main board, and the thermal conductivity of the organic aerogel material in the extension direction of the through holes is ≥0.5W / m·K.

2. The wearable device according to claim 1, wherein: The organic aerogel material has a matrix part and a pore structure. The weight-reducing frame also contains a reinforcing material. The reinforcing material is distributed in the matrix part and the pore structure. The mass percentage of the reinforcing material in the total weight of the weight-reducing frame is 0-70%.

3. The wearable device according to claim 2, wherein: At least a portion of the frame is formed as the weight-reducing frame, the mass percentage of the organic aerogel material in the frame to the total weight of the weight-reducing frame is 30%-90%, and the density of the frame is 0.6 g / cm 3 -1.4g / cm 3 .

4. The wearable device according to claim 1, wherein: The mass percentage of the organic aerogel material in the outer frame to the total weight of the weight-reducing frame in the outer frame is 30%-80%, the bending strength of the outer frame is greater than 50 MPa, and the density of the outer frame is 0.8 g / cm 3 -1.6g / cm 3 .

5. The wearable device according to claim 1, wherein: The mass percentage of the organic aerogel material in the inner cover plate to the total weight of the weight-reducing frame in the inner cover plate is 30%-100%.

6. The wearable device according to claim 1, wherein: The mass content of the thermal conductive filler is 0-20% of the weight-reducing frame.

7. The wearable device according to claim 2, wherein: The reinforcing material is at least one of carbon fiber, glass fiber, aramid fiber and PBO fiber.

8. The wearable device according to claim 2, wherein: The reinforcing material is at least one of chopped fiber powder, non-woven felt and fiber fabric.

9. The wearable device according to claim 2, wherein: The fiber length of the reinforcing material is greater than 1 mm.

10. The wearable device according to any one of claims 1 to 9, characterized in that: The organic aerogel includes at least one of polyimides, polyamides, polyesters, aldehydes, polyolefins and polysaccharides.