Ar glasses leg and ar glasses

Abstract

The application discloses an AR glasses leg and AR glasses, which comprise a shell, a main circuit board, a shielding cover and a Bluetooth antenna. The shell is provided with a first groove, and the first groove comprises an inner bottom wall and a first inner side wall. The main circuit board is arranged in the first groove, and a first space is formed between the main circuit board and the inner bottom wall. The shielding cover is arranged on the surface of the main circuit board facing the inner bottom wall. The Bluetooth antenna is connected with the main circuit board, and the Bluetooth antenna comprises a first part and a second part connected with each other, the first part is arranged in a bent mode relative to the second part, the first part is attached to the inner bottom wall, and the second part is attached to the first inner side wall. The Bluetooth antenna is arranged in a relative bent mode of the first part and the second part, and the first part and the second part are respectively attached to the inner bottom wall and the first inner side wall of the first groove, so that the structure of the antenna is more compact, and the layout of the Bluetooth antenna is realized in a limited space.

Description

Technical Field

[0001] This application relates to the field of smart glasses technology, and more particularly to an AR glasses temple and AR glasses. Background Technology

[0002] With the rapid development of modern technology, AR glasses are gradually appearing in various aspects of life. AR glasses are wearable devices that overlay virtual information onto the real world, achieving augmented reality experiences through optical displays, sensors, and computing units. AR glasses use modulation and demodulation methods on the circuit board and transmit electromagnetic wave signals through an antenna medium, thereby realizing the Internet of Things. However, the antenna occupies a large amount of space, making it difficult to meet the miniaturization design requirements of AR glasses. Summary of the Invention

[0003] This application aims to provide AR glasses that improve the structural compactness of AR glasses.

[0004] Firstly, this application discloses an AR glasses temple, including a housing, a main circuit board, a shielding cover, and a Bluetooth antenna. Specifically, the housing has a first groove, which includes an inner bottom wall and a first inner side wall. The main circuit board is disposed in the first groove, and a first space exists between the main circuit board and the inner bottom wall. The shielding cover is disposed on the surface of the main circuit board facing the inner bottom wall. The Bluetooth antenna is connected to the main circuit board and includes a first part and a second part connected to each other. The first part is bent relative to the second part, the first part is attached to the inner bottom wall, and the second part is attached to the first inner side wall. A first gap exists between the first part and the shielding cover, and a second gap exists between the second part and the shielding cover.

[0005] In the above scheme, the Bluetooth antenna is configured as a first part and a second part that are relatively bent, and the first part and the second part are respectively attached to the inner bottom wall and the first inner side wall of the first groove. This makes the antenna structure more compact, achieving a better layout of the Bluetooth antenna within a limited space, which is beneficial to improving the antenna efficiency and communication distance of the Bluetooth antenna. The housing not only provides support for the Bluetooth antenna, but also provides physical protection for it. The Bluetooth antenna is connected to the main circuit board and provides communication functionality. A shielding cover is placed on the surface of the main circuit board facing the inner bottom wall, which helps to reduce the additional radiation generated by the traces of the main circuit board due to induced current, thereby reducing the interference with the performance of the Bluetooth antenna. A first gap and a second gap are left between the shielding cover and the first and second parts of the Bluetooth antenna, which helps to keep the Bluetooth antenna away from the shielding cover and enhances the shielding effect of the shielding cover.

[0006] In some embodiments, the AR glasses temple further includes a first antenna spring and a second antenna spring. The first groove further includes a second inner sidewall, which is connected to the first inner sidewall. A third gap exists between the shielding cover and the second inner sidewall. Both the first and second antenna springs are disposed within the third gap and are spaced apart from the shielding cover. The first antenna spring is connected to the ground terminal of the main circuit board and to the Bluetooth antenna, while the second antenna spring is connected to the feed terminal of the main circuit board and to the Bluetooth antenna. The first inner sidewall, second inner sidewall, and bottom wall of the first groove are perpendicular to each other. Connecting the Bluetooth antenna to the main circuit board via the first and second antenna springs avoids antenna position fixation issues caused by soldering processes, facilitating disassembly and maintenance of the Bluetooth antenna. Furthermore, the first and second antenna springs provide elastic compensation, reducing poor contact caused by mechanical stress in the Bluetooth antenna. The first antenna spring is connected to the ground terminal of the main circuit board. When static electricity accumulates on external metal components, the first antenna spring can act as a static discharge path, quickly conducting the charge to ground and reducing the possibility of electrostatic discharge damaging the Bluetooth antenna or critical components. The second antenna spring is connected to the feed terminal of the main circuit board, establishing a signal transmission path and providing communication functionality.

[0007] In some embodiments, the first antenna spring and the second antenna spring are supported between the first portion and the main circuit board. Positioning the first and second antenna springs between the first portion and the main circuit board provides physical support for the Bluetooth antenna, reducing the likelihood of the Bluetooth antenna shifting due to insecure mounting, which could affect communication.

[0008] In some embodiments, the AR glasses temple further includes a flexible circuit board disposed within the first groove and between the shielding cover and the inner bottom wall, and connected to the main circuit board. The flexible circuit board is equipped with multiple components, enabling it to provide more diverse functions, such as touch control functionality.

[0009] In some embodiments, the main circuit board is provided with a π-type matching network, and the second antenna spring is connected to the π-type matching network via a circuit. The π-type matching network is a circuit network composed of three reactive elements, such as capacitors or inductors, with a topology resembling the Greek letter "π". The π-type matching network helps match the antenna impedance with the output impedance of the RF chip, reducing signal reflection and improving power transmission efficiency. Connecting the second antenna spring to the π-type matching network allows for tuning of the Bluetooth antenna's return loss rate and antenna efficiency performance.

[0010] In some embodiments, the housing has a second groove, and the housing includes a first wall portion. The second groove is separated from the first groove by the first wall portion, and the first inner sidewall is disposed on the first wall portion. The AR glasses temple also includes a speaker, which is disposed within the second groove. The speaker includes a housing, and the housing is connected to the ground terminal of the main circuit board. The speaker enables the AR glasses temple to provide audio functionality, and grounding the speaker housing reduces the impact of the speaker housing on the signal transmission of the Bluetooth antenna.

[0011] In some embodiments, a first limiting member is provided on the inner bottom wall of the first groove, and the first limiting member abuts against the main circuit board. Providing the first limiting member and abutting against the main circuit board can reinforce the main circuit board through the physical support of the first limiting member, reducing the shaking of the main circuit board and helping to reduce the possibility of components on the main circuit board colliding with other parts, which could affect the function of the main circuit board.

[0012] In some embodiments, the shielding cover is provided with a first clearance opening, the first limiting member extends into the first clearance opening, and the first limiting member abuts against the main circuit board. The shielding cover having a first clearance opening and the first limiting member extending into the first clearance opening allows the first limiting member to reinforce the shielding cover, which is beneficial to the stability of the shielding cover.

[0013] In some embodiments, the AR glasses temple further includes a mounting groove, which is formed on the side of the first groove away from the second groove. The end of the mounting groove away from the first groove has an opening, and the mounting groove is used to mount the glasses frame. The mounting groove facilitates easier mounting of the glasses frame.

[0014] Secondly, this application also proposes an AR glasses, including AR glasses temples as described in any of the embodiments of the first aspect above.

[0015] Additional aspects and advantages of the embodiments of this application will be described, shown, or illustrated in part by way of implementation of the embodiments of this application in the following description. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are not intended to limit the embodiments, and elements having the same reference numerals in the drawings are designated as similar elements.

[0017] Figure 1 Here is an exploded view of the temple of AR glasses according to some embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the structure of the temples of AR glasses according to some embodiments of this application;

[0019] Figure 3 This is a schematic diagram of the housing and Bluetooth antenna structure of some embodiments of this application;

[0020] Figure 4 This is a partially enlarged schematic diagram of the temples of AR glasses according to some embodiments of this application;

[0021] Figure 5 This is a schematic diagram showing the positions of some components in some embodiments of this application;

[0022] Figure 6 This is a schematic diagram showing the positions of some components in some embodiments of this application;

[0023] Figure 7 This is a schematic diagram of the shell structure of some embodiments of this application;

[0024] Figure 8 The following are simulation results of Bluetooth antenna return loss rate for some embodiments of this application;

[0025] Figure 9 The figures show simulation results of Bluetooth antenna efficiency for some embodiments of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Housing; 11. First groove; 111. Inner bottom wall; 112. First inner side wall; 113. Second inner side wall; 12. Second groove; 13. First wall portion; 14. First limiting member; 15. Mounting groove;

[0027] 2. Main circuit board;

[0028] 3. Shielding cover; 31. First clearance opening;

[0029] 4. Bluetooth antenna; 41. Part 1; 42. Part 2;

[0030] 5. First antenna spring;

[0031] 6. The second day, the wire spring;

[0032] 7. Flexible circuit board;

[0033] 8. Loudspeaker;

[0034] 100. First space; 101. First gap; 102. Second gap; 103. Third gap. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0036] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0038] The technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0039] Firstly, this application proposes an AR glasses temple, please refer to... Figure 1 and Figure 2 The system includes a housing 1, a main circuit board 2, a shielding cover 3, and a Bluetooth antenna 4. The housing 1 has a first recess 11, which includes an inner bottom wall 111 and a first inner side wall 112. Please refer to... Figure 2 and Figure 5 The main circuit board 2 is disposed in the first recess 11, and a first space 100 is formed between the main circuit board 2 and the inner bottom wall 111. The shielding cover 3 is disposed on the surface of the main circuit board 2 facing the inner bottom wall 111. Please refer to... Figure 3 and Figure 6 The Bluetooth antenna 4 is connected to the main circuit board 2. The Bluetooth antenna 4 includes a first part 41 and a second part 42 connected to each other. The first part 41 is bent relative to the second part 42. The first part 41 is attached to the inner bottom wall 111, and the second part 42 is attached to the first inner side wall 112. There is a first gap 101 between the first part 41 and the shielding cover 3, and there is a second gap 102 between the second part 42 and the shielding cover 3.

[0040] In this design, the first inner sidewall 112 of the first groove 11 is perpendicular to the inner bottom wall 111. The first part 41 and the second part 42 of the Bluetooth antenna 4 are respectively attached to the inner bottom wall 111 and the first inner sidewall 112, forming a mutually perpendicular structural distribution. In this design, the Bluetooth antenna 4 is configured with a relatively bent first part 41 and second part 42, and the first part 41 and the second part 42 are respectively attached to the inner bottom wall 111 and the first inner sidewall 112 of the first groove 11, making the antenna structure more compact and realizing the layout of the Bluetooth antenna 4 within a limited space. The housing 1 not only provides support for the Bluetooth antenna 4, but also provides physical protection for the Bluetooth antenna 4. It is understood that the housing can be made of plastic to reduce the impact on the Bluetooth antenna 4. The Bluetooth antenna 4 is connected to the main circuit board 2 to provide communication functionality. A shielding cover 3 is provided on the surface of the main circuit board 2 facing the inner bottom wall 111, which helps to reduce the occurrence of additional radiation from the traces of the main circuit board 2 due to induced current, thereby reducing the interference with the performance of the Bluetooth antenna 4. A first gap 101 and a second gap 102 are provided between the shielding cover 3 and the first part 41 and the second part 42 of the Bluetooth antenna 4. This facilitates keeping the Bluetooth antenna 4 away from the shielding cover 3 and enhances the shielding effect of the shielding cover 3. It is understood that, in order to enable the shielding cover 3 to better perform its shielding function, the shielding cover 3 is connected to the ground plane of the main circuit board 2.

[0041] In some embodiments, please refer to Figure 1 and Figure 4 The AR glasses temple also includes a first antenna spring 5 and a second antenna spring 6. The first groove 11 also includes a second inner sidewall 113, which is connected to the first inner sidewall 112. A third gap 103 exists between the shielding cover 3 and the second inner sidewall 113. The first antenna spring 5 and the second antenna spring 6 are both disposed within the third gap 103, and are spaced apart from the shielding cover 3. The first antenna spring 5 is connected to the ground terminal of the main circuit board 2 and to the Bluetooth antenna 4. The second antenna spring 6 is connected to the feed terminal of the main circuit board 2 and to the Bluetooth antenna 4. The first inner sidewall 112, the second inner sidewall 113, and the inner bottom wall 111 of the first groove 11 are arranged perpendicularly to each other. Connecting the Bluetooth antenna 4 to the main circuit board 2 via the first antenna spring 5 and the second antenna spring 6 avoids antenna position fixation issues caused by soldering processes, facilitating the disassembly and maintenance of the Bluetooth antenna 4. Furthermore, the first antenna spring 5 and the second antenna spring 6 can provide elastic compensation, reducing poor contact of the Bluetooth antenna 4 due to mechanical stress. The first antenna spring 5 is connected to the ground terminal of the main circuit board 2. When static electricity accumulates on external metal components, the first antenna spring 5 can serve as a static discharge path, quickly conducting the charge to ground, reducing the possibility of electrostatic discharge damaging the Bluetooth antenna 4 or critical components. The second antenna spring 6 is connected to the feed terminal of the main circuit board 2, connecting the signal transmission path and providing communication functionality.

[0042] In some embodiments, please refer to Figure 5 The first antenna spring 5 and the second antenna spring 6 are supported between the first part 41 and the main circuit board 2. Positioning the first antenna spring 5 and the second antenna spring 6 between the first part 41 and the main circuit board 2 provides physical support for the Bluetooth antenna 4, reducing the likelihood of the Bluetooth antenna 4 shifting due to insecure mounting, thus affecting communication.

[0043] In some embodiments, please refer to Figure 1 The AR glasses temple also includes a flexible circuit board 7, which is disposed within the first groove 11 and between the shielding cover 3 and the inner bottom wall 111. The flexible circuit board 7 is connected to the main circuit board 2. The flexible circuit board 7 is equipped with multiple components, which can provide more diverse functions, such as touch control functions.

[0044] In some embodiments, the main circuit board 2 is provided with a π-type matching network (not shown in the figure), and the second antenna spring 6 is connected to the π-type matching network via a circuit. The π-type matching network is a circuit network composed of three reactive elements, such as capacitors or inductors, with a topology resembling the Greek letter "π" (i.e., π). The π-type matching network helps to match the impedance of the antenna with the output impedance of the RF chip, reducing signal reflection and improving power transmission efficiency. Connecting the second antenna spring 6 to the π-type matching network allows for tuning of the return loss rate and antenna efficiency performance of the Bluetooth antenna 4.

[0045] In some embodiments, please refer to Figure 7 The housing 1 has a second groove 12 and includes a first wall portion 13. The second groove 12 is separated from the first groove 11 by the first wall portion 13, and a first inner sidewall 112 is disposed in the first wall portion 13. The AR glasses temple also includes a speaker 8, which is disposed in the second groove 12. The speaker 8 includes a housing (not shown in the figure), and the housing is connected to the ground terminal of the main circuit board 2. The speaker 8 enables the AR glasses temple to provide audio functionality, and grounding the housing of the speaker 8 can reduce the influence of the housing of the speaker 8 on the signal transmission of the Bluetooth antenna 4.

[0046] In some embodiments, please refer to Figure 7 The inner bottom wall 111 of the first groove 11 is provided with a first limiting member 14, which abuts against the main circuit board 2. The first limiting member 14, by abutting against the main circuit board 2, provides physical support to reinforce the main circuit board 2, reducing its shaking and minimizing the impact on its functionality caused by collisions between components and other parts.

[0047] In some embodiments, please refer to Figure 1 The shielding cover 3 is provided with a first clearance opening 31, and a first limiting member 14 extends into the first clearance opening 31 and abuts against the main circuit board 2. The shielding cover 3 has a first clearance opening 31, and the first limiting member 14 extends into the first clearance opening 31, which can make the first limiting member 14 reinforce the shielding cover 3 and help stabilize the shielding cover 3.

[0048] In some embodiments, please refer to Figure 7 The AR glasses temple also includes a mounting slot 15, which is located on the side of the first groove 11 away from the second groove 12. The end of the mounting slot 15 away from the first groove 11 has an opening. The mounting slot 15 is used to mount the glasses frame. The mounting slot 15 facilitates easier mounting of the glasses frame.

[0049] This application also provides a simulation diagram of the Bluetooth antenna 4, please refer to it. Figure 8 and Figure 9 . Figure 8 The figure shows the simulation results of the return loss rate of Bluetooth antenna 4. As shown in the figure, within the operating frequency range of 2.4GHz-2.5GHz, the return loss rate of Bluetooth antenna 4 is <-4.8dB, which basically meets the requirements of AR glasses communication.

[0050] Figure 9 The figure shows the simulation results of the antenna efficiency of Bluetooth antenna 4. As shown in the figure, within the operating frequency range of 2.4GHz-2.5GHz, the antenna efficiency of Bluetooth antenna 4 is >-9.1dB, which basically meets the requirements of AR glasses communication.

[0051] Secondly, this application also proposes an AR glasses, including AR glasses temples as described in any of the embodiments of the first aspect above.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An AR glasses temple, characterized in that, include: The housing has a first groove, the first groove including an inner bottom wall and a first inner side wall; A main circuit board is disposed in the first groove, and a first space is formed between the main circuit board and the inner bottom wall; A shielding cover is disposed on the surface of the main circuit board facing the inner bottom wall; A Bluetooth antenna is connected to the main circuit board. The Bluetooth antenna includes a first part and a second part connected to each other. The first part is bent relative to the second part. The first part is attached to the inner bottom wall, and the second part is attached to the first inner side wall. There is a first gap between the first part and the shielding cover, and a second gap between the second part and the shielding cover.

2. The AR glasses temple according to claim 1, characterized in that, The AR glasses temple also includes a first antenna spring and a second antenna spring, and the first groove also includes a second inner sidewall, which is connected to the first inner sidewall. There is a third gap between the shielding cover and the second inner sidewall. The first antenna spring and the second antenna spring are both disposed in the third gap, and the first antenna spring and the second antenna spring are both spaced apart from the shielding cover. The first antenna spring is connected to the ground terminal of the main circuit board and to the Bluetooth antenna, and the second antenna spring is connected to the feed terminal of the main circuit board and to the Bluetooth antenna.

3. The AR glasses temple according to claim 2, characterized in that, The first antenna spring and the second antenna spring are supported between the first part and the main circuit board.

4. The AR glasses temple according to claim 1, characterized in that, The AR glasses temple also includes a flexible circuit board, which is disposed in the first groove and between the shielding cover and the inner bottom wall. The flexible circuit board is connected to the main circuit board.

5. The AR glasses temple according to claim 2, characterized in that, The main circuit board is equipped with a π-type matching network, and the second antenna spring is connected to the π-type matching network through a circuit.

6. The AR glasses temple according to claim 1, characterized in that, The housing has a second groove, the housing includes a first wall portion, the second groove is separated from the first groove by the first wall portion, and the first inner sidewall is disposed on the first wall portion; The AR glasses temple also includes a speaker, which is disposed in the second groove. The speaker includes a housing, which is connected to the ground terminal of the main circuit board.

7. The AR glasses temple according to claim 1, characterized in that, The inner bottom wall of the first groove is provided with a first limiting member, which abuts against the main circuit board.

8. The AR glasses temple according to claim 7, characterized in that, The shielding cover is provided with a first clearance opening, the first limiting member extends into the first clearance opening, and the first limiting member abuts against the main circuit board.

9. The AR glasses temple according to claim 6, characterized in that, The AR glasses temple also includes a mounting groove, which is located on the side of the first groove away from the second groove. The end of the mounting groove away from the first groove has an opening, and the mounting groove is used to mount the glasses bracket.

10. An AR glasses, characterized in that, Includes the temples of AR glasses as described in any one of claims 1 to 9.

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