CN112742669A

CN112742669A - Dispensing jig for augmented reality glasses

Info

Publication number: CN112742669A
Application number: CN202011582735.1A
Authority: CN
Inventors: 刘阳; 王军
Original assignee: Shining Reality Wuxi Technology Co Ltd
Current assignee: Shining Reality Wuxi Technology Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-05-04
Anticipated expiration: 2040-12-28
Also published as: CN112742669B

Abstract

The application discloses a glue dispensing jig for augmented reality glasses, concretely relates to product processing technology field. This a point is glued tool for augmented reality glasses includes: a base forming a receiving groove for receiving at least a portion of a frame of augmented reality glasses; the cover body is connected with the base, a cavity is formed between the base and the cover body, and the cavity is used for accommodating at least part of augmented reality glasses; the rail is arranged on the cover body; the sliding block is magnetically connected with the track; the slider is equipped with the through-hole, and the through-hole is used for the sizing material at least to pass through, and the slider can move along the track. This scheme can solve the application scope that present point gluing tool exists little, the easy card of dying and problem with high costs.

Description

Dispensing jig for augmented reality glasses

Technical Field

This application belongs to product processing technology field, concretely relates to a glue dispensing jig for augmented reality glasses.

Background

In the product course of working, can drip glue to the product through some glue processing to in paste, embedment, insulating treatment, fixed operation such as are fixed to the product, some glue often need with the tool cooperation in the actual production, in order to fix and fix a position the product.

In the prior art, a gap which is the same as a track required by a dispensing jig can be directly formed on an auxiliary structure, and an auxiliary tool slides along the gap during dispensing; or, a wedge-shaped structure can be used as a sliding rail or a sliding block of the dispensing jig, and the sliding part is matched with the wedge-shaped structure so as to complete the sliding action, but the wedge-shaped structure and the sliding part are embedded, so that the clamping phenomenon is easy to occur in the sliding process; or, an automatic device can be adopted, the motion track required in the dispensing process is compiled in advance, and the program is started during operation, but the method is high in cost.

Disclosure of Invention

The purpose of the embodiment of the application is to provide a point gluing tool for augmented reality glasses, can solve the problem that the application scope that present point gluing tool exists is little, the easy card is died and with high costs.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a point gluing tool for augmented reality glasses, include:

a base forming a receiving channel for receiving at least a portion of a frame of the augmented reality glasses;

the cover body is connected with the base, a cavity is formed between the base and the cover body, and the cavity is used for accommodating at least part of the augmented reality glasses;

the track is arranged on the cover body;

the sliding block is magnetically connected with the track; the slider is provided with a through hole, the through hole is at least used for rubber materials to pass through, and the slider can move along the track.

In this application embodiment, set up the track on the lid of tool is glued to the point, when gluing to augmented reality glasses, in the through-hole that the slider can be worn to locate by the syringe needle is glued to the point, the syringe needle is glued to the point can drive the slider along the rail-mounted motion, and the point is glued the syringe needle and is implemented the operation of gluing in the removal process. The shape of the track of the dispensing jig can be set according to the actual needs of the augmented reality glasses, so that the requirements of different augmented reality glasses are met, and therefore the embodiment of the application is not limited to specific augmented reality glasses; secondly, the sliding block is magnetically connected with the track, and the sliding block moves along the track, so that the phenomenon of blocking in the dispensing process can be avoided; in addition, this application embodiment adopts traditional some glue tools, both can satisfy the demand of different augmented reality glasses, and can avoid the emergence of card dead phenomenon, need not adopt automation equipment to carry out some glue to can save the cost of some glue. Therefore, the dispensing jig for the augmented reality glasses disclosed by the embodiment of the application can solve the problems of small application range, easy blocking and high cost of the existing dispensing jig.

Drawings

Fig. 1 is an exploded view of a dispensing jig for augmented reality glasses disclosed in an embodiment of the present application;

fig. 2 is a schematic partial structural view of a dispensing jig for augmented reality glasses disclosed in the embodiment of the present application;

FIG. 3 is an assembled view of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is an enlarged partial cross-sectional view of FIG. 3;

fig. 6 is an assembly schematic view of a partial structure of a dispensing jig for augmented reality glasses disclosed in the embodiment of the present application;

fig. 7 is a schematic structural view of a dispensing jig for augmented reality glasses disclosed in the embodiment of the present application;

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

fig. 9 is a schematic view illustrating a dispensing jig for augmented reality glasses and the augmented reality glasses disclosed in the embodiment of the present application in cooperation;

fig. 10 is a schematic structural view of a dispensing jig for augmented reality glasses disclosed in the embodiment of the present application in a dispensing process.

Description of reference numerals:

100-base, 110-first positioning part, 111-frame positioning part, 112-middle positioning part, 113-temple positioning part, 120-hinge part and 130-second magnetic part;

200-cover body, 210-groove, 220-second positioning part, 230-first magnetic part, 240-track support, 241-ear part, 250-cover main body and 260-screw;

300-track;

400-a slide block;

500-rotating shaft.

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 some, but not all, embodiments of the present application. 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.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The dispensing jig for augmented reality glasses provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1 to 10, an embodiment of the present application discloses a dispensing jig for augmented reality glasses, which includes a base 100, a cover 200, a rail 300, and a slider 400.

The base 100 is the basic component of tool is glued to the point, and the base 100 can provide the installation basis for the other component parts of tool is glued to the point, and the base 100 forms the holding tank, and the holding tank is used for holding at least part picture frame of augmented reality glasses, that is to say, when augmented reality glasses were placed in the holding tank, at least part edge of augmented reality glasses was identical with the edge of holding tank. The lens frame in the embodiment of the present application includes a lens rim and a connecting portion of the lens rim.

The cover 200 is connected to the base 100, optionally, the cover 200 may be connected to the base 100 in a clamping manner, and of course, the cover 200 may also be connected to the base 100 by fasteners such as screws, which is not limited in this embodiment of the application. A cavity is formed between the base 100 and the cover 200, and the cavity is used for accommodating at least part of the augmented reality glasses, that is, when the dispensing jig needs to work, at least part of the augmented reality glasses can be placed in the cavity.

The track 300 is disposed on the cover 200, and in the dispensing process of the augmented reality glasses, the track 300 provides a guide for the movement of the dispensing needle.

The slider 400 is connected with track 300 magnetism, and the slider 400 is equipped with the through-hole, and the through-hole is used for the sizing material to pass through at least, and when gluing, the through-hole mainly used is fixed a position the point and is glued the syringe needle. It should be noted that the glue material in the embodiment of the present application may be a hot melt adhesive, an epoxy resin, an anaerobic glue, a UV glue, or the like. Alternatively, a magnet may be disposed on a side surface of the slider 400, and the magnet may be attached to the side surface of the slider 400 by bonding or the like, so that the magnet may be easily detached and repaired after being damaged during use; in other alternative embodiments, the slider 400 may also be magnetized laterally, which not only facilitates the mounting of the dispensing jig, but also saves the space occupied by the slider 400 in the track 300. The slider 400 can move along track 300, and when gluing to augmented reality glasses, the point is glued in the syringe needle can wear to locate in the through-hole of slider 400, and the point is glued the syringe needle and can be driven slider 400 and move along track 300, and the point is glued the syringe needle and is implemented some gluey operation in the removal process, and the sizing material that flows from the point is glued the syringe needle and can be fallen at augmented reality glasses's target position to accomplish some gluey operations.

In this embodiment, set up track 300 on the lid 200 of tool is glued to the point, when gluing to augmented reality glasses, the point syringe needle can wear to locate in the through-hole of slider 400, and the point syringe needle can drive slider 400 and remove along track 300, and the point syringe needle is glued to the moving process and is implemented the operation of gluing. The shape of the track 300 of the dispensing jig can be set according to the actual needs of the augmented reality glasses, so that the requirements of different augmented reality glasses are met, and therefore the embodiment of the application is not limited to specific augmented reality glasses; secondly, the slider 400 is magnetically connected with the track 300, and the slider 400 moves along the track 300, so that the phenomenon of blocking in the dispensing process can be avoided; in addition, this application embodiment adopts traditional some glue tools, both can satisfy the demand of different augmented reality glasses, and can avoid the emergence of card dead phenomenon, need not adopt automation equipment to carry out some glue to can save the cost of some glue. Therefore, the dispensing jig for the augmented reality glasses disclosed by the embodiment of the application can solve the problems of small application range, easy blocking and high cost of the existing dispensing jig.

Optionally, the moving track of the slider 400 is matched with a preset dispensing track, so that the glue material flowing out of the dispensing needle head falls on the target position of the augmented reality glasses, and the dispensing accuracy is improved. In one embodiment, the moving track of the slider 400 is the preset dispensing track; or, the moving track of the slider 400 may be calculated by combining the size of the through hole, the fitting error between the parts, and the like on the basis of the preset dispensing track.

The track 300 and the cover body 200 may be an integrated structure or a split structure, and when the track 300 and the cover body 200 are an integrated structure, the track 300 is not convenient to repair after being damaged. Optionally, the track 300 and the cover 200 are of a split structure, and are connected together in a bonding manner, which facilitates disassembly and maintenance after the track 300 is damaged.

In an alternative embodiment, the cover 200 is provided with a groove 210, and the rail 300 is disposed in the groove 210. Of course, the track 300 may be directly disposed on the surface of the cover 200 without forming a groove on the cover 200, but in this arrangement, the track 300 occupies a certain space, and the stability is poor, which increases the design difficulty. Therefore, the groove 210 is formed in the cover body 200, and the rail 300 is arranged in the groove 210, so that the structure of the cover body 200 can be fully utilized, the structural utilization rate of the cover body 200 can be effectively improved, the space is saved, and the design difficulty is reduced; secondly, set up track 300 in recess 210, recess 210 can provide certain holding power and spacing effect for track 300 to improve the stability of track 300.

Optionally, the slider 400 is a cylinder, and since the side surface of the cylinder is relatively smooth, the slider 400 can move more smoothly along the track 300, and of course, the slider 400 may also have a structure with other shapes, which is not limited in this embodiment of the present application. The sliding block 400 is in clearance fit with the groove 210 in the axial direction of the cylinder, that is, the sliding block 400 is longitudinally arranged in the groove 210 and has a certain clearance with the groove 210, so as to ensure that the sliding block 400 moves more smoothly in the groove 210. Further alternatively, the gap between the slider 400 and the groove 210 may be controlled to a small extent, so that the groove 210 may guide the movement of the slider 400, thereby further improving the stability when the slider 400 moves.

Referring to fig. 4, further optionally, the radius of curvature R at any point of the track 300 is greater than or equal to the radius R of the bottom surface of the cylinder, so that the slider 400 can maintain a large contact area with the track 300 at any point of the track 300, thereby enabling the slider 400 to move along the track 300 more reliably.

Referring to fig. 5, in the above embodiment, if the radius r of the bottom surface of the cylinder is smaller than the sum of the depth h of the groove 210 and the radius b of the through hole, most of the structure of the slider 400 will be located in the groove 210, and it will be inconvenient to repair if any structure of the slider 400 or the rail 300 is damaged; secondly, the depth h of the groove 210 is too deep, so that the phenomenon of blocking is easy to occur; in addition, when dispensing is required, if the radius r of the bottom surface of the cylinder is smaller than the sum of the depth h of the groove 210 and the radius b of the through hole, the groove 210 will block the through hole on the slider 400, which is not favorable for the dispensing needle to be inserted into the through hole of the slider 400. Optionally, the radius r of the bottom surface of the cylinder is greater than or equal to the sum of the depth h of the groove 210 and the radius b of the through hole, so that the maintenance is facilitated when any structure of the slider 400 or the track 300 is damaged, and in the process that the slider 400 moves along the track 300, the slider 400 can be ensured to move smoothly along the track 300, the phenomenon of blocking is avoided, and meanwhile, the dispensing needle can be conveniently inserted into the through hole of the slider 400.

Alternatively, the track 300 and the slider 400 have dissimilar magnetic poles, enabling a magnetic attachment. That is to say, the magnetic poles of the track 300 and the slider 400 are opposite, specifically, the track 300 may be set as an S pole, the slider 400 may be set as an N pole, the track 300 may also be set as an N pole, and the slider 400 may be set as an S pole. In the embodiment of the present application, the track 300 and the slider 400 are set to have different magnetic poles, so that the track 300 and the slider 400 are magnetically attracted to each other, thereby enabling the dispensing jig to be more tightly connected in the dispensing process.

In an alternative embodiment, the cover body 200 includes a cover main body 250 and a rail bracket 240, and optionally, the cover main body 250 and the rail bracket 240 may be an integral structure or a separate structure, and when the cover main body 250 and the rail bracket 240 are integral, maintenance is not facilitated after the rail bracket 240 is damaged. Optionally, the cover main body 250 and the rail bracket 240 are of a split structure, and the two may be fixedly connected by bonding or the like, so that the cover main body is convenient to detach and repair after the rail bracket 240 is damaged. The groove 210 is formed on the rail bracket 240, and the rail bracket 240 is fixed to the cover main body 250, in this way, it is possible to facilitate the removal of the rail 300 from the groove 210 and the installation of the rail 300 into the groove 210, and particularly, when the rail 300 is damaged, it is possible to facilitate the replacement of the rail 300 by removing the rail bracket 240.

Optionally, the track support 240 includes at least one ear portion 241, and the cover main body 250 is formed with at least one limiting groove corresponding to the ear portion 241, that is, the ear portion 241 of the track support 240 and the limiting groove of the cover main body 250 are in limiting fit, so that the track support 240 can be more reliably fixed on the cover main body 250, and the track support 240 is not easily moved relative to the cover main body 250 during dispensing.

Further alternatively, the ear portion 241 of the rail bracket 240 may be fixedly connected to the position-limiting groove by a screw 260, so as to further enhance the firmness of the connection between the rail bracket 240 and the cover main body 250, and of course, the rail bracket 240 and the cover main body 250 may also be connected by other fasteners, which is not particularly limited in this embodiment.

In an alternative embodiment, the track 300 is an annular rubber magnet, that is, the whole track 300 is manufactured into an annular structure by an integral molding method, when the dispensing jig is installed, the track 300 is directly placed into the groove 210, and after the arrangement method is adopted, the annular rubber magnet can be better matched with the track 300 in the dispensing process. In other alternative embodiments, the track 300 may be a rubber bar magnet, that is, the entire track 300 is manufactured into a bar structure, further operations are required to be performed on the track 300 during the process of installing the dispensing jig, the bar magnet is disposed in the groove 210 by forming an annular structure through end-to-end connection, and the rubber bar magnet is convenient to replace after being damaged. It should be noted that, in the embodiment of the present application, the end-to-end connection of the strip-shaped rubber magnet may be an end-to-end contact, or an end-to-end interval, where there is a small gap between the end and the end, and the gap may be smaller than or equal to the diameter of the slider 400, optionally, the gap may be smaller than or equal to 2mm, and the strip-shaped rubber magnet may also be an end-to-end lap joint, that is, the end and the end of the strip-shaped rubber magnet are partially overlapped. In addition, in the embodiment of the present application, the surface of the rail 300 abutting the groove 210 is provided with an adhesive layer, which can make the rail 300 and the groove 210 connected more firmly.

Optionally, the base 100 of the dispensing jig disclosed in the embodiment of the present application includes the first positioning portion 110, and during the dispensing process, the first positioning portion 110 is in positioning fit with a corresponding position of the augmented reality glasses, so as to improve the stability of the augmented reality glasses placed on the dispensing jig.

Further optionally, the cover body 200 of the dispensing jig disclosed in the embodiment of the present application includes a second positioning portion 220, and in the dispensing process, the second positioning portion 220 is in positioning fit with another corresponding position of the augmented reality glasses, so as to further enhance the stability of the augmented reality glasses placed on the dispensing jig.

The augmented reality glasses may have a regular shape or an irregular shape, and in order to better adapt to the structure of the augmented reality glasses, the second positioning portion 220 may optionally have an inclined positioning surface, and the inclined positioning surface is in contact with the surface of the augmented reality glasses. Through this slope locating surface, can be so that when augmented reality glasses are placed in holding tank department, its point of treating is glued the position and is based on being located the horizontal plane, in-process at the point of gluing, makes slider 400's removal orbit and predetermine the orbit phase-match of gluing to improve the accuracy of gluing.

In an alternative embodiment, the first positioning portion 110 includes a frame positioning portion 111 and a middle positioning portion 112, the frame positioning portion 111 is in positioning fit with a lens frame of the augmented reality glasses, and the middle positioning portion 112 is in positioning fit with a connecting portion of the lens frame of the augmented reality glasses, where the connecting portion of the lens frame is located between two lens frames, and connects the two lens frames. By adopting the structure, the moving track of the sliding block 400 can be matched with the preset dispensing track on the augmented reality glasses in the dispensing process of the augmented reality glasses, so that the dispensing accuracy of the augmented reality glasses is improved. The middle positioning portion 112 in the embodiment of the present invention is not necessarily provided at the middle position of the lens frame of the augmented reality glasses, and may have a certain deviation.

In an optional embodiment, the first positioning portion 110 further includes a glasses leg positioning portion 113, the glasses leg positioning portion 113 is in positioning fit with a glasses leg of the augmented reality glasses, and the glasses leg positioning portion 113 can fix the augmented reality glasses to the base 100 of the dispensing jig, so that in the dispensing process, the augmented reality glasses are not easy to move, and the accuracy of dispensing the augmented reality glasses is further improved. In the embodiment of the present application, since the number of the temple of the augmented reality glasses is two, correspondingly, the number of the temple positioning portion 113 of the dispensing jig, the track support 240, the track 300, and the slider 400 is also two.

If the temple positioning portion 113 is provided at the middle position of the base 100, the temple may interfere with the movement of the cover 200 when the augmented reality glasses are placed on the base 100 and the cover 200 is covered on the base 100. Therefore, in a further alternative embodiment, the temple positioning portion 113 is disposed on one side of the base 100, the hinge portion 120 is disposed on the other side of the base 100, the cover 200 is hinged to the hinge portion 120, and the temple positioning portion 113 is disposed opposite to the hinge portion 120. Optionally, the cover 200 and the base 100 can be hinged by a hinge 500, so that the cover 200 can be flexibly covered on the base 100. When dispensing is needed, when the augmented reality glasses are placed on the base 100 and the cover 200 covers the base 100, the interference of the glasses legs to the cover 200 can be avoided.

Optionally, the cover 200 of the dispensing jig for augmented reality glasses disclosed in the embodiment of the present application further includes a first magnetic attraction portion 230, the base 100 further includes a second magnetic attraction portion 130, the second magnetic attraction portion 130 is disposed between the two temple positioning portions 113 and is disposed in the middle, the first magnetic attraction portion 230 and the second magnetic attraction portion 130 are magnetically attracted to cooperate and correspond to each other, in the dispensing process, when the cover 200 is engaged with the base 100, the first magnetic attraction portion 230 and the second magnetic attraction portion 130 are magnetically attracted to cooperate, so that the augmented reality glasses placed on the dispensing jig are more stable, and the dispensing efficiency is improved. The middle positioning portion 112 in the embodiment of the present invention is not necessarily provided at the middle position of the lens frame of the augmented reality glasses, and may have a certain deviation.

Further optionally, all be provided with magnet in first magnetism portion 230 and the second magnetism portion 130 of inhaling, when needs point is glued, place augmented reality glasses on base 100, when lid 200 lid fits base 100, first magnetism portion 230 and the second magnetism portion 130 of inhaling attract each other, make the magnetic attraction between the two stronger, thereby strengthen first magnetism portion 230 and the second magnetism portion 130 of inhaling between magnetism and inhale complex stability, it is more firm to make to be connected between lid 200 and the base 100, the difficult emergence skew of augmented reality glasses in the point gluing process.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a some adhesive fixtures for augmented reality glasses which characterized in that includes:

a base (100) forming a receiving channel for receiving at least a portion of a frame of the augmented reality glasses;

a cover (200), wherein the cover (200) is connected with the base (100), and a cavity is formed between the base (100) and the cover (200) and is used for accommodating at least part of the augmented reality glasses;

a rail (300), the rail (300) being disposed on the cover (200);

the sliding block (400) is in magnetic attraction connection with the track (300); the sliding block (400) is provided with a through hole, the through hole is at least used for rubber materials to pass through, and the sliding block (400) can move along the track (300).

2. The dispensing jig according to claim 1, wherein the moving track of the slider (400) matches a predetermined dispensing track.

3. A dispensing jig according to claim 2, wherein the track (300) and the cover (200) are of a split structure and connected to each other.

4. A dispensing jig according to claim 3, characterized in that the cover (200) is provided with a groove (210), and the track (300) is arranged in the groove (210).

5. A dispensing jig according to claim 4, characterized in that, the slider (400) is a cylinder, and the slider (400) is in clearance fit with the groove (210) in the axial direction of the cylinder.

6. A dispensing jig according to claim 5, characterized in that the radius of curvature at any point of the track (300) is greater than or equal to the radius of the bottom surface of the cylinder.

7. A dispensing jig according to claim 6, characterized in that the radius of the bottom surface of the cylinder is greater than or equal to the sum of the depth of the groove (210) and the radius of the through hole.

8. A dispensing jig according to claim 7, characterized in that the track (300) and the slider (400) have different magnetic poles and are magnetically connectable.

9. A dispensing jig according to claim 8, characterized in that the lid body (200) comprises a lid main body (250) and a rail bracket (240), the groove (210) is formed on the rail bracket (240), and the rail bracket (240) is fixed on the lid main body (250).

10. A dispensing jig according to claim 9, characterized in that the track support (240) comprises at least one ear (241), and the cover main body (250) is formed with at least one limiting groove corresponding to the ear (241).

11. A dispensing jig according to claim 10, wherein the track (300) is an annular rubber magnet, or the track (300) is a bar-shaped rubber magnet, and is annularly arranged in the groove (210) by connecting end to end; the surface of the track (300) abutting against the groove (210) is provided with a bonding layer.

12. The dispensing jig of claim 11, wherein the base (100) comprises a first positioning portion (110), and the first positioning portion (110) is in positioning fit with a corresponding position of the augmented reality glasses.

13. The dispensing jig according to claim 12, wherein the cover (200) comprises a second positioning portion (220), and the second positioning portion (220) is in positioning fit with another corresponding position of the augmented reality glasses.

14. The dispensing jig according to claim 13, wherein the second positioning portion (220) has an inclined positioning surface, and the inclined positioning surface is in contact with the surface of the augmented reality glasses.

15. The dispensing jig according to claim 13, wherein the first positioning portion (110) comprises a frame positioning portion (111) and an intermediate positioning portion (112), the frame positioning portion (111) is in positioning fit with the lens frame of the augmented reality glasses, and the intermediate positioning portion (112) is in positioning fit with the connecting portion of the lens frame of the augmented reality glasses.

16. The dispensing jig according to claim 14 or 15, wherein the first positioning portion (110) further comprises a temple positioning portion (113), and the temple positioning portion (113) is in positioning fit with a temple of the augmented reality glasses.

17. A dispensing jig according to claim 16, wherein the temple positioning portion (113) is provided on one side of the base (100), the other side of the base (100) is provided with a hinge portion (120), the cover (200) is hinged to the hinge portion (120), and the temple positioning portion (113) is provided opposite to the hinge portion (120).

18. The dispensing jig of claim 17, wherein the cover (200) further comprises a first magnetic attraction portion (230), the base (100) comprises a second magnetic attraction portion (130), the second magnetic attraction portion (130) is disposed between the two temple positioning portions (113) and is centered, and the first magnetic attraction portion (230) and the second magnetic attraction portion (130) are magnetically attracted and matched and are disposed correspondingly.