CN115032791A

CN115032791A - AR glasses

Info

Publication number: CN115032791A
Application number: CN202210602220.6A
Authority: CN
Inventors: 李传龙; 张锋
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-09
Anticipated expiration: 2042-05-30
Also published as: CN115032791B

Abstract

The application discloses AR glasses relates to electronic equipment technical field, including framework, mirror leg, pivot, first PCB board, second PCB board and flexible circuit board, mirror leg and framework are connected in the pivot, and in the framework was located to first PCB board, in the mirror leg was located to the second PCB board, first PCB board and second PCB board were connected respectively at the both ends of flexible circuit board, and the flexible circuit board passes the rotation center of pivot or does not pass the rotation center. When the flexible circuit board does not pass through the rotation center of the rotating shaft, the AR glasses further comprise a positioning structure and a limiting structure, wherein the positioning structure is connected with the flexible circuit board and the first PCB or the frame body; limiting structure movably locates in the frame for form the variable and flexible circuit board's of hiding and receive space with the frame size, when the mirror leg was folded or was expanded, flexible circuit board's at least some stretched out and hidden and receive the space. Above-mentioned AR glasses can improve the reliability when the mirror leg is buckled to promote the life of product.

Description

AR glasses

Technical Field

The application relates to the technical field of electronic equipment, in particular to AR glasses.

Background

At present, the form of the AR product increasingly tends to be designed into glasses with bendable glasses legs and smaller size, but the function is more and more abundant, so that the hardware system is more and more complex, therefore, the hardware system has to be respectively arranged on the glasses frame body and the glasses legs in the design of the AR glasses, and thus the flexible circuit board capable of setting a plurality of signal lines needs to pass through the rotating shaft to realize integral connection when the AR glasses are designed. The flexible circuit board through the pivot should possess the resistant user demand of buckling many times when using, and consequently, the user can wear, accomodate like using ordinary glasses through folding the mirror leg when using AR glasses.

Most of the AR glasses products using the flexible circuit board to connect the frame and the glasses legs in the prior art are mainly connected by respectively connecting both ends of the flexible circuit board with the PCB board in the frame and the PCB board in the glasses legs. However, above-mentioned mode of setting up can cause the mirror leg reliability of buckling poor and product life low, greatly reduced user's use experience. According to the above problems, it is necessary for those skilled in the art to provide AR glasses in good time, which can solve the problems of poor bending reliability of the glasses legs and short service life of the product, so that the AR glasses have mass production and improve the user experience.

Disclosure of Invention

The utility model provides a reliability when AR glasses can improve the mirror leg and buckle to promote the life of product.

In order to achieve the above purpose, the present application provides an AR glasses, including a frame, glasses legs, a rotation shaft, a first PCB, a second PCB and a flexible circuit board, wherein the rotation shaft connects the glasses legs and the frame to realize bending of the glasses legs relative to the frame, the first PCB is disposed in the frame, the second PCB is disposed in the glasses legs, a first end of the flexible circuit board is connected to the first PCB, a second end of the flexible circuit board is connected to the second PCB, the flexible circuit board passes through a rotation center of the rotation shaft, or the flexible circuit board does not pass through the rotation center;

when the flexible circuit board does not pass through the rotation center, the method further comprises the following steps:

the positioning structure is used for connecting the flexible circuit board and the first PCB or the frame body and preventing the first end of the flexible circuit board from being disconnected with the first PCB;

the limiting structure is movably arranged in the frame body and is used for forming a storage space which has a variable size and can store the flexible circuit board with the frame body;

wherein, when the temple is folded or unfolded, at least a part of the flexible circuit board is extended out of the accommodating space.

In some embodiments, the flexible printed circuit board further comprises a guide structure, the guide structure is arranged in the frame, the limiting structure is movably arranged between the guide structure and the first printed circuit board, and the flexible printed circuit board passes through the guide structure and the limiting structure after bypassing the limiting structure and being bent.

In some embodiments, the first end of the flexible circuit board is provided with a first connector sub-buckle, the first PCB is provided with a first connector female buckle, and the first connector sub-buckle is buckled with the first connector female buckle to realize the connection between the first end of the flexible circuit board and the first PCB; the AR glasses further include:

the first connector bracket is provided with a first fixing groove;

the reinforcing plate is connected with the first end of the flexible circuit board;

the fixing rib is connected with the first PCB;

wherein, first fixed slot and stiffening plate and fixed muscle cooperation to the first end of fastening flexible circuit board is connected with first PCB board.

In some embodiments, the reinforcing plate further comprises an elastic cushion layer, and the elastic cushion layer is arranged between the first connector bracket and the reinforcing plate.

In some embodiments, the second end of the flexible circuit board is provided with a second connector sub-buckle, the second PCB is provided with a second connector female buckle, and the second connector sub-buckle is buckled with the second connector female buckle to realize the connection between the second end of the flexible circuit board and the second PCB;

the AR glasses further comprise a second connector support, the second connector support comprises a fixing plate and a fixing support, the fixing plate is connected with a second PCB, the fixing support and the fixing plate are provided with a containing cavity used for containing the second end of the flexible circuit board, the fixing plate is provided with a fixing protrusion, the fixing support is provided with a second fixing groove, the second fixing groove is matched with the fixing protrusion, and the second end of the fixing support, connected with the fixing plate and fastened to the flexible circuit board, is connected with the second PCB.

In some embodiments, the temple arm is provided with a limiting rib, the flexible circuit board is provided with a limiting groove between a first end of the flexible circuit board and a second end of the flexible circuit board, and the limiting groove cooperates with the limiting rib to limit movement of the flexible circuit board relative to the temple arm.

In some embodiments, the spacing structure is a flexible flexure structure or a rigid spacing post.

In some embodiments, the flexible flexure mechanism is a rubber dome or a compressed foam.

In some embodiments, the shaft has at least two centers of rotation.

In some embodiments, the shaft is provided with a hollow structure, and the flexible circuit board passes through the hollow structure, so that the flexible circuit board passes through the rotation center.

Compared with the background art, the AR glasses provided by the embodiment of the application comprise a frame body, glasses legs, a rotating shaft, a first PCB, a second PCB and a flexible circuit board, wherein the rotating shaft is connected with the glasses legs and the frame body, and the glasses legs rotate relative to the frame body through the rotating shaft so as to realize bending; in the frame was located to first PCB board, in the mirror leg was located to the second PCB board, first PCB board was connected to the first end of flexible circuit board, and the second PCB board is connected to the second end of flexible circuit board, and the rotation center of pivot is passed to the flexible circuit board, or the rotation center is not passed to the flexible circuit board.

It should be noted that, when the flexible circuit board does not pass through the rotation center of the rotating shaft, in the process of folding or unfolding the glasses legs, the flexible circuit board needs to be changed in a telescopic manner relative to the frame body, so as to meet the requirement of the length change of the flexible circuit board at the position of the rotating shaft when the glasses legs are folded or unfolded, for this reason, the AR glasses further comprise a positioning structure and a limiting structure, wherein the positioning structure is used for connecting the flexible circuit board with the first PCB or the frame body, and the positioning structure is used for preventing the first end of the flexible circuit board from being disconnected from the first PCB; the limiting structure is movably arranged in the frame body and is used for forming a storage space which is variable in size and can store the flexible circuit board with the frame body. The flexible circuit board can be guaranteed to have the flexible variable quantity when the mirror legs are folded or unfolded by the aid of the accommodating space, so that at least one part of the flexible circuit board extends out of the accommodating space when the mirror legs are folded or unfolded, and the length change of the flexible circuit board at the position of the rotating shaft is met.

When the flexible circuit board passes through the rotating center of the rotating shaft, the length of the flexible circuit board at the position of the rotating shaft is unchanged in the folding or unfolding process of the glasses legs, so that the flexible circuit board does not need to be telescopically changed relative to the frame body, the length of the flexible circuit board does not change, and the reliability reduction caused by the telescopic motion of the flexible circuit board can be avoided.

Compared with the traditional AR glasses, the AR glasses provided by the embodiment of the application have the advantages that the reliability is influenced by the length change of the flexible circuit board when the glasses legs are bent, the first end of the flexible circuit board is connected with the first PCB, the second end of the flexible circuit board is connected with the second PCB, the flexible circuit board can be connected with the two PCBs, and meanwhile, the flexible circuit board is set to be the rotating center penetrating through the rotating shaft or the rotating center not penetrating through the rotating shaft. When the flexible circuit board does not pass through the rotation center of the rotating shaft, the flexible circuit board is connected with the first PCB or the frame body through the positioning structure so as to ensure the reliability of the connection between the first end of the flexible circuit board and the first PCB, and a storage space which is variable in size and can store the flexible circuit board is formed by the limiting structure and the frame body so as to ensure that the flexible circuit board has a telescopic change function when the glasses legs are folded or unfolded, so that the problem that the reliability is influenced due to the length change of the flexible circuit board when the glasses legs are bent is solved; when the flexible circuit board passes through the rotating center of the rotating shaft, the reliability reduction caused by the flexible circuit board stretching motion can be directly avoided. To sum up, the AR glasses that this application embodiment provided can improve the reliability when the mirror leg is buckled to promote the life of product.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an exploded view of AR glasses in an embodiment of the present application;

FIG. 2 is a schematic diagram of the connection of the flexible circuit board in the AR glasses shown in FIG. 1;

FIG. 3 is a schematic view of another angle connection of the flexible circuit board in the AR eyeglasses shown in FIG. 1;

fig. 4 is an assembly view of the flexible circuit board, the first PCB board and the first connector holder of fig. 2;

FIG. 5 is a schematic cross-sectional view taken along line A of FIG. 2;

FIG. 6 is a schematic view of the second connector holder of FIG. 2;

FIG. 7 is a schematic cross-sectional view illustrating the connection position of the flexible printed circuit board to the first PCB when the temple is in the extended state and the flexible printed circuit board does not pass through the rotation center of the rotation shaft;

FIG. 8 is a schematic view of the stop structure of FIG. 7 in another configuration;

FIG. 9 is a cross-sectional view illustrating the flexible printed circuit board connected to the first PCB when the temple bars are folded and the flexible printed circuit board does not pass through the rotation center of the rotation shaft;

FIG. 10 is an assembly view of the temples in a folded state without the flexible circuit board passing through the rotation center of the rotation shaft;

FIG. 11 is a schematic sectional view showing the position of the hinge when the temple bars are unfolded and the flexible printed circuit board does not pass through the center of rotation of the hinge;

FIG. 12 is a schematic sectional view showing the position of the hinge when the temples are folded and the flexible circuit board does not pass through the rotation center of the hinge;

FIG. 13 is a schematic sectional view showing the position of the hinge when the temple bars are unfolded and the flexible printed circuit board passes through the center of rotation of the hinge;

FIG. 14 is a schematic sectional view showing the positions of the rotation shafts when the temples are folded and the flexible circuit board passes through the rotation center of the rotation shafts;

FIG. 15 is a schematic sectional view showing the connection of the flexible circuit boards when the temple bars are unfolded and the flexible circuit boards pass through the rotation center of the rotation shaft;

FIG. 16 is a schematic view showing an assembly structure of the flexible printed circuit board and the rotation shaft when the temple bars are folded and the flexible printed circuit board passes through the rotation center of the rotation shaft;

fig. 17 is a schematic structural view of a flexible circuit board in the AR glasses shown in fig. 1.

Wherein:

1-front shell, 11-guide structure;

2-an optical module;

3-a first PCB, 31-a fixing rib and 32-a first connector female buckle;

4-first connector holder, 41-first fixation groove;

5-a rear shell;

6-flexible circuit board, 61-reinforcing plate, 62-elastic cushion layer, 63-limiting structure, 64-positioning structure, 65-limiting groove, 66-first end, 661-first connector sub-buckle, 67-second end, 671-second connector sub-buckle and 68-containing space;

7-rotation axis, 71-rotation center;

8-second connector bracket, 81-fixing plate, 811-fixing projection, 82-fixing bracket, 822-second fixing groove and 83-accommodating cavity;

9-a second PCB board, 91-a second connector female buckle;

10-temple, 101-spacing muscle.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to better understand the technical scheme of the present application, the following detailed description is provided for the person skilled in the art with reference to the accompanying drawings and the detailed description.

It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.

Referring to fig. 1, the AR glasses provided in the embodiments of the present application include a frame, a glasses leg 10, a rotating shaft 7, a first PCB 3, a second PCB 9, and a flexible circuit board 6, where the rotating shaft 7 connects the glasses leg 10 and the frame, the glasses leg 10 rotates relative to the frame through the rotating shaft 7 to realize bending, the first PCB 3 is disposed in the frame, and the second PCB 9 is disposed in the glasses leg 10; in addition, the AR glasses still include optical module 2, the framework includes preceding shell 1 and backshell 5, first PCB board 3 passes through the fastener with optical assembly and is fixed together, then wholly pass through the fastener to be fixed on backshell 5, preceding shell 1 passes through fastening structures such as buckle with backshell 5 and is fixed together, pivot 7 passes through the fastener to be fixed respectively on backshell 5 and the mirror leg 10 of framework, first PCB board 3 and second PCB board 9 are connected respectively to flexible circuit board 6, so link together hardware system, realize the whole assembly of AR glasses.

In the embodiment of the present application, the first end 66 of the flexible circuit board 6 is connected to the first PCB 3, the second end 67 of the flexible circuit board 6 is connected to the second PCB 9, the flexible circuit board 6 passes through the rotation center 71 of the rotation shaft 7, or the flexible circuit board 6 does not pass through the rotation center 71.

It should be noted that, when the flexible circuit board 6 does not pass through the rotation center 71 of the rotating shaft 7, during the folding or unfolding process of the temple 10, the flexible circuit board 6 needs to be changed in terms of extension and contraction relative to the frame body so as to meet the length change of the flexible circuit board 6 at the position of the rotating shaft 7 when the temple 10 is folded or unfolded, specifically, since the size of the flexible circuit board 6 corresponding to two rotation centers 71 (for example, the rotating shaft 7 has two rotation centers 71) of the rotating shaft 7 is changed when the temple 10 is in the unfolded and folded state, for this reason, the AR glasses further include a positioning structure 64 and a limiting structure 63, wherein the positioning structure 64 connects the flexible circuit board 6 with the first PCB 3 or the frame body, and the positioning structure 64 is used for preventing the first end 66 of the flexible circuit board 6 from being disconnected from the first PCB 3; the limiting structure 63 is movably disposed in the frame, and the limiting structure 63 is used for forming a storage space 68 with a variable size and capable of storing the flexible circuit board 6. The accommodating space 68 is provided to ensure that the flexible circuit board 6 has a variation in the amount of expansion and contraction when the temple 10 is folded or unfolded, so that at least a portion of the flexible circuit board 6 extends out of the accommodating space 68 when the temple 10 is folded or unfolded, thereby satisfying the variation in the length of the flexible circuit board 6 at the position of the rotation shaft 7.

When the flexible circuit board 6 passes through the rotation center 71 of the rotation shaft 7, since the length of the flexible circuit board 6 at the position of the rotation shaft 7 is unchanged in the process of folding or unfolding the temple 10, the flexible circuit board 6 does not need to be changed in extension and contraction relative to the frame body, and the length of the flexible circuit board 6 is not changed, so that the reliability reduction caused by the extension and contraction movement of the flexible circuit board 6 can be avoided.

Compared with the conventional AR glasses, in the AR glasses provided in the embodiment of the present application, in consideration of the reliability affected by the length change of the flexible circuit board 6 when the temple 10 is bent, the first end 66 of the flexible circuit board 6 is connected to the first PCB 3, and the second end 67 of the flexible circuit board 6 is connected to the second PCB 9, so that the flexible circuit board 6 can be connected to the two PCBs, and at the same time, the flexible circuit board 6 is configured to pass through the rotation center 71 of the rotating shaft 7 or not pass through the rotation center 71 of the rotating shaft 7.

When the flexible circuit board 6 does not pass through the rotation center 71 of the rotation shaft 7, the positioning structure 64 is used for connecting the flexible circuit board 6 with the first PCB 3 or the frame body so as to ensure the reliability of the connection between the first end 66 of the flexible circuit board 6 and the first PCB 3, and the limiting structure 63 and the frame body form the storage space 68 which has variable size and can store the flexible circuit board 6 so as to ensure that the flexible circuit board 6 has the telescopic function when the temple 10 is folded or unfolded, so that the problem that the reliability is influenced by the length change of the flexible circuit board 6 when the temple 10 is bent is solved.

When the flexible circuit board 6 passes through the rotation center 71 of the rotation shaft 7, the decrease of reliability due to the telescopic movement of the flexible circuit board 6 can be directly avoided.

In summary, the AR glasses provided by the embodiment of the present application can improve the reliability of the bent temples 10, thereby improving the service life of the product.

It should be noted that the rotating shaft 7 has a rotating center 71, and generally has 1, 2, and 3, and the above arrangement is applicable to different numbers of rotating centers 71, and in the embodiment of the present application, at least two rotating centers 71 are preferably adopted, and the following description mainly takes two rotating centers 71 as an example.

When the flexible circuit board 6 does not pass through the rotation center 71, the length of the flexible circuit board 6 is changed in a telescopic manner during the folding and unfolding processes of the temple 10, which requires that the connection structure of the first end 66 and the second end 67 of the flexible circuit board 6 needs to have a very reliable fixing and limiting structure to prevent the connector on the flexible circuit board 6 from being separated from the connector on the PCB during the telescopic process.

In some embodiments, the first end 66 of the flexible circuit board 6 is provided with a first connector sub-button 661, the first PCB 3 is provided with a first connector female-button 32, and the first connector sub-button 661 is fastened with the first connector female-button 32 to connect the first end 66 of the flexible circuit board 6 with the PCB. In order to facilitate the connection of the first end 66 of the flexible circuit board 6 with the first PCB 3, the AR glasses further comprise a first connector bracket 4, and the first end 66 of the flexible circuit board 6 is fixedly connected with the PCB through the first connector bracket 4.

Referring to fig. 2-4, the first connector holder 4 has a first fixing groove 41, and the AR glasses further include a reinforcing plate 61 and a fixing rib 31, wherein the reinforcing plate 61 is connected to the first end 66 of the flexible circuit board 6, and the fixing rib 31 is connected to the first PCB 3. So, through the cooperation of first fixed slot 41 and stiffening plate 61 and fixed muscle 31, first connector support 4, flexible circuit board 6 and first PCB board 3 is whole fixed reliable, can restrict 6 degrees of freedom to the first end 66 that can guarantee flexible circuit board 6 like this is connected at the flexible in-process reliability of flexible circuit board 6 connection of flexible circuit board 6 with being connected of PCB board.

Referring to fig. 5, the AR glasses further include an elastic cushion 62, and the elastic cushion 62 is disposed between the first connector bracket 4 and the reinforcing plate 61. For example, the elastic cushion layer 62 may be made of compression foam, and the space between the first connector holder 4 and the reinforcing plate 61 is filled with the compression foam, so that the flexible circuit board 6 is fixed by compression without damage to the connector on the flexible circuit board 6 due to overvoltage.

In some embodiments, the second end 67 of the flexible circuit board 6 is provided with a second connector sub-buckle 671, the second PCB board 9 is provided with a second connector female buckle 91, and the second connector sub-buckle 671 and the second connector female buckle 91 are buckled to realize that the second end 67 of the flexible circuit board 6 is connected with the second PCB board 9, in order to enhance the connection between the second end of the flexible circuit board 6 and the second PCB board 9, the AR glasses further include a second connector bracket 8, and the second end 67 of the flexible circuit board 6 is fixedly connected with the second PCB board 9 through the second connector bracket 8.

Referring to fig. 6, the second connector holder 8 includes a fixing plate 81 and a fixing holder 82, the fixing plate 81 is connected to the second PCB board 9, the fixing holder 82 and the fixing plate 81 form a receiving cavity 83 for receiving the second end 67, the fixing plate 81 has a fixing protrusion 811, and the fixing holder 82 has a second fixing groove 822. In this way, the fixing bracket 82 is connected to the fixing plate 81 and fastens the connection of the second end 67 of the flexible circuit board 6 and the second PCB board 9 by the second fixing groove 822 and the fixing protrusion 811 being engaged.

Of course, according to actual needs, the second connector holder 8 may refer to the connection manner of the first connector holder 4, which is not specifically limited herein, provided that the reliability of the connection between the flexible circuit board 6 and the PCB board can be ensured.

In addition, since the flexible circuit board 6 is not reliably limited in the degree of freedom in the front-rear direction, a limiting structure 63, specifically, a limiting rib 101 may be further provided on the temple 10, the flexible circuit board 6 may be provided with a limiting groove 65 located between the first end 66 and the second end 67, and the limiting groove 65 may cooperate with the limiting rib 101 to limit the movement of the flexible circuit board 6 relative to the temple 10. That is, by limiting the degree of freedom in the front-rear direction again, the reliability of connection of the second end 67 of the flexible circuit board 6 in the expansion and contraction process can be ensured.

After the reliability of the flexible circuit board 6 in the stretching process is ensured, the flexible circuit board 6 itself is further ensured not to be bent and damaged in the stretching process. Since the minimum bending radius R required by the flexible circuit board 6 may be different according to different lamination structures, the structure is designed to ensure that the minimum bending radius R of each region where bending is likely to occur is satisfied.

Referring to fig. 7-12, in the unfolding or folding process of the temple 10, there are 3 bending R angles, which are the 1 st R angle, the 2 nd R angle, and the 3 rd R angle, wherein the 2 nd R angle is smaller due to the spatial relationship, and the measure is taken to fix the flexible circuit board 6 on the first PCB 3 through the positioning structure 64, and the positioning structure 64 connects the flexible circuit board 6 and the first PCB 3, so that the flexible circuit board 6 does not shift during the movement process.

Of course, the positioning structure 64 may be selected from double-sided adhesive, structural adhesive, or structural member.

In some embodiments, the AR glasses further include a guiding structure 11, the guiding structure 11 is disposed in the frame body (the front shell 1), and one side of the guiding structure 11 close to the limiting structure 63 has an arc surface for matching the shape of the flexible circuit board 6 at the position to prevent the flexible circuit board 6 from being damaged.

Therefore, the limiting structure 63 is movably disposed between the guiding structure 11 and the first PCB 3, the flexible circuit board 6 bypasses the limiting structure 63 and bends to pass through the guiding structure 11 and the limiting structure 63, and the storage space 68 is formed by the guiding structure 11 and the limiting structure 63.

It can be understood that, since the 1 st R corner is a portion where the displacement change is large during the movement of the flexible circuit board 6, the flexible circuit board 6 is forced to bend inward at the 1 st R corner by arranging the guide structure 11 on the frame body, and meanwhile, the limiting structure 63 is arranged at the 1 st R corner, so that the 1 st R corner is limited by the limiting structure 63 not to be too small.

In the arrangement mode, the 1 st R angle is ensured to meet the requirement through the guide structure 11 and the limiting structure 63; meanwhile, at the 3R corner, the rotating shaft 7 is used for limiting, the rotating shaft 7 can be a hinge structure, and the hinge structure can meet the use requirement of the bending radius of the flexible circuit board 6 through hinge limiting.

In summary, since the sizes of the two rotation centers 71 of the flexible circuit board 6 corresponding to the rotation shaft 7 are changed when the temple 10 is unfolded or folded, for this reason, the positioning structure 64 prevents the first end 66 of the flexible circuit board 6 from being disconnected from the first PCB 3, and then the limiting structure 63 and the frame form the storage space 68 with a variable size and capable of storing the flexible circuit board 6, and the storage space 68 is configured to ensure that the flexible circuit board 6 has the expansion and contraction variation amount when the temple 10 is folded or unfolded, so that when the temple 10 is folded or unfolded, at least a part of the flexible circuit board 6 extends out of the storage space 68 to satisfy the length change of the flexible circuit board 6 at the position of the rotation shaft 7. Meanwhile, on the basis of ensuring the minimum bending radius of each possible bending part of the flexible circuit board 6, the effective service life of bending the temple 10 can be ensured.

In some embodiments, the position-limiting structure 63 is a flexible bending structure or a rigid position-limiting post, and when the position-limiting structure 63 is a rigid position-limiting post, a position-limiting groove 65 matched with the rigid position-limiting post may be correspondingly disposed on the frame body, and the rigid position-limiting post may slide up and down in the position-limiting groove 65 to meet the requirement of the flexible circuit board 6 for expansion and contraction.

Preferably, the limiting structure 63 is a flexible bending structure, the flexible bending structure is an elastic sheet or a compressed foam made of silicone rubber, and different structures can be selected according to actual conditions.

In order to solve the problem that the flexible circuit board 6 is not damaged when the temple 10 is bent for multiple times, another idea is to ensure that the flexible circuit board 6 does not stretch or contract when the temple 10 is bent, and meanwhile, to ensure that the minimum bending radius of each bending part meets the design requirements.

Referring to fig. 13-16, by optimizing the design of the rotating shaft 7, a hollow structure is disposed in the middle of the rotating shaft 7, and the flexible circuit board 6 passes through the hollow structure, so that the flexible circuit board 6 passes through the rotation center 71. In this way, when the flexible circuit board 6 passes through the rotation center 71 of the rotation shaft 7, since the length of the flexible circuit board 6 at the position of the rotation shaft 7 is unchanged during the folding or unfolding process of the temple 10, the flexible circuit board 6 does not need to be changed in extension and contraction relative to the frame, the length of the flexible circuit board 6 is not changed, and the reliability reduction caused by the extension and contraction motion of the flexible circuit board 6 can be avoided.

Meanwhile, a limiting piece (such as a flexible silicon rubber material, compressed foam, a limiting cylinder and the like) can be designed at the 1 st R corner to ensure the minimum bending radius; the 2 nd R angle position ensures that the minimum R angle meets the requirement through the design of the rotating shaft 7, so that the bending reliability of the flexible circuit board 6 can be ensured.

In some embodiments, in order to solve the problem that the flexible circuit board 6 is not damaged when being bent for multiple times at the temple 10, the structural design of the flexible circuit board 6 itself may be optimized, and according to the stacked structure of the flexible circuit board 6, the copper foil layer and the flexible dielectric layer mainly affect the bending performance of the flexible circuit board 6, so that the 2 layers are required to have better bending flexibility and thinner thickness, the copper foil layer is required to be made of a high-performance copper rolled material with thinner thickness and better ductility, and the flexible dielectric layer is made of a thinner PI material, so that the overall bending resistance is improved. Meanwhile, for the multi-layer flexible circuit board 6, a layered design, i.e. an "air gap" design, is required, and the layered structure should be layered in a manner of 1+1+1 as much as possible, because the bending resistance of the single-layer flexible circuit board 6 is the best, please refer to fig. 17.

It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The AR glasses provided by the present application are described in detail above. The principle and the embodiment of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understand the scheme and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. The AR glasses are characterized by comprising a frame body, glasses legs (10), a rotating shaft (7), a first PCB (3), a second PCB (9) and a flexible circuit board (6), wherein the rotating shaft (7) is connected with the glasses legs (10) and the frame body so as to enable the glasses legs (10) to be bent relative to the frame body, the first PCB (3) is arranged in the frame body, the second PCB (9) is arranged in the glasses legs (10), a first end of the flexible circuit board (6) is connected with the first PCB (3), a second end of the flexible circuit board (6) is connected with the second PCB (9), and the flexible circuit board (6) penetrates through a rotation center (71) of the rotating shaft (7) or the flexible circuit board (6) does not penetrate through the rotation center (71);

when the flexible circuit board (6) does not pass through the rotation center (71), further comprising:

a positioning structure (64) connecting the flexible circuit board (6) with the first PCB (3) or the frame body for preventing the first end (66) of the flexible circuit board (6) from disconnecting with the first PCB (3);

the limiting structure (63) is movably arranged in the frame body and is used for forming a storage space (68) which has a variable size and can store the flexible circuit board (6) with the frame body;

wherein at least a portion of the flexible circuit board (6) protrudes out of the storage space (68) when the temple (10) is folded or unfolded.

2. The AR glasses according to claim 1, further comprising a guiding structure (11), wherein the guiding structure (11) is disposed in the frame, the limiting structure (63) is movably disposed between the guiding structure (11) and the first PCB (3), and the flexible circuit board (6) passes through between the guiding structure (11) and the limiting structure (63) after passing around the limiting structure (63) and being bent.

3. The AR glasses according to claim 1, wherein the first end (66) of the flexible circuit board (6) is provided with a first connector sub-clasp (661), the first PCB board (3) is provided with a first connector female-clasp (32), the first connector sub-clasp (661) is buckled with the first connector female-clasp (32) to achieve connection of the first end (66) of the flexible circuit board (6) with the first PCB board (3); the AR glasses further include:

a first connector holder (4), the first connector holder (4) being provided with a first fixing groove (41);

a reinforcing plate (61) connected to a first end (66) of the flexible circuit board (6);

a fixing rib (31) connected to the first PCB (3);

wherein the first fixing groove (41) is matched with the reinforcing plate (61) and the fixing rib (31) to fasten the connection of the first end (66) of the flexible circuit board (6) and the first PCB (3).

4. The AR glasses according to claim 3, further comprising an elastic cushion (62), wherein the elastic cushion (62) is provided between the first connector holder (4) and the stiffening plate (61).

5. The AR glasses according to claim 1, characterized in that the second end (67) of the flexible circuit board (6) is provided with a second connector sub-clasp (671), the second PCB board (9) is provided with a second connector female-clasp (91), and the second connector sub-clasp (671) is buckled with the second connector female-clasp (91) to achieve connection of the second end (67) of the flexible circuit board (6) with the second PCB board (9);

AR glasses still include second connector support (8), second connector support (8) are including fixed plate (81) and fixed bolster (82), fixed plate (81) are connected second PCB board (9), fixed bolster (82) with fixed plate (81) are formed with and are used for the holding chamber (83) of second end (67) of flexible circuit board (6), fixed plate (81) are equipped with fixed arch (811), fixed bolster (82) are equipped with second fixed slot (822), second fixed slot (822) with fixed arch (811) cooperation, in order to realize fixed bolster (82) with fixed plate (81) are connected and are fastened second end (67) of flexible circuit board (6) with the connection of second PCB board (9).

6. The AR eyeglasses according to claim 1, wherein the temple arm (10) is provided with a spacing rib (101), the flexible circuit board (6) is provided with a spacing groove (65) between the first end (66) of the flexible circuit board (6) and the second end (67) of the flexible circuit board (6), the spacing groove (65) cooperates with the spacing rib (101) to limit the movement of the flexible circuit board (6) relative to the temple arm (10).

7. The AR glasses according to any of claims 1 to 6, wherein the limiting structure (63) is a flexible bending structure or a rigid limiting post.

8. The AR glasses according to claim 7, wherein the flexible flexure structure is a rubber dome or a compressed foam.

9. The AR glasses according to claim 1, characterized in that said rotation shaft (7) has at least two said centres of rotation (71).

10. The AR glasses according to claim 1, characterized in that the rotation shaft (7) is provided with a hollow structure through which the flexible circuit board (6) passes, such that the flexible circuit board (6) passes through the rotation center (71).