CN220064536U - Multifunctional glasses - Google Patents

Abstract

The utility model relates to the field of optics, in particular to a pair of multifunctional glasses, which solves the problem that glasses and headphones cannot be worn for a long time in the prior art. The glasses include the picture frame and set up the mirror foot in the picture frame both sides, and the mirror foot includes the earphone mirror foot, and the earphone mirror foot includes foot and lower foot, when wearing glasses, goes up the top and the below that foot and lower foot are located the ear respectively to the ear is pressed when preventing to wear glasses headphone simultaneously. The glasses legs comprise the upper supporting legs and the lower supporting legs, and when the glasses legs are worn, the upper supporting legs and the lower supporting legs are respectively positioned at the upper side and the lower side of the ears and staggered with the headset, so that the ears are prevented from being pressed at the two sides when the headset is worn, and the wearing comfort of a user is improved. And the mirror foot comprises a first mirror foot and a second mirror foot which are detachably connected, so that the use scene of the mirror foot can be enlarged according to the type of the mirror foot which needs to be replaced.

Description

Multifunctional glasses

Technical Field

The utility model relates to the field of optics, in particular to a pair of multifunctional glasses.

Background

When wearing glasses, two mirror feet hang behind the ear, when wearing headphone, the earphone presses in the ear outside for the ear is pressed by mirror foot and the earphone of both sides. Especially for myopic people, there is one such experience: after wearing glasses and headphones for a long time, ears are pressed on the temples by the headphones, ear pain occurs, and the glasses and the headphones cannot be worn for a long time.

To solve this problem, a person chooses to replace a looser earphone, but the sound effect of the earphone is affected, the looser earphone is easy to drop, and the use experience is poor. The thinner metal mirror foot is also selected to be replaced, so that the pressing of the ear is reduced, but the problem can only be relieved but not thoroughly solved, and the ear can be painful due to the pressing after long-time use.

Disclosure of Invention

The present utility model is directed to providing a pair of multi-functional glasses to solve the above-mentioned problem that glasses and headphones cannot be worn for a long time at the same time.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a multi-functional glasses, includes the picture frame and sets up the mirror foot in the picture frame both sides, and the mirror foot includes the earphone mirror foot, and the earphone mirror foot includes foot and lower stabilizer blade, and when wearing glasses, upper foot and lower stabilizer blade are located the top and the below of ear respectively, avoid with the earphone for avoid mirror foot and headphone to be located the both sides of ear simultaneously, thereby the ear is oppressed when preventing to wear glasses and headphone simultaneously.

In one embodiment, the earpiece includes a first earpiece and a second earpiece, the first earpiece is connected with the frame, the second earpiece includes two types, respectively the earpiece and the conventional earpiece, the conventional earpiece includes a foot, and when worn, the foot is located behind the ear, the first earpiece and the second earpiece are detachably connected, so that the type of the second earpiece can be changed according to the use requirement.

In one embodiment, the first temple is provided with a first connecting portion far away from the frame, the second temple is provided with a second connecting portion connecting the upper leg and the lower leg, and the first connecting portion and the second connecting portion form a connection relationship of detachable joint so that the first temple and the second temple form detachable connection.

In an embodiment, the first connecting portion is provided with a first connecting hole, a first clamping structure is arranged in the first connecting hole, the second connecting portion is provided with a second connecting hole, a second clamping structure is arranged in the second connecting hole, the connector further comprises a clamping piece, a third clamping structure is arranged in the first clamping structure and the second clamping structure in a penetrating mode, the third clamping structure and the first clamping structure form detachable clamping, and the third clamping structure and the second clamping structure form detachable clamping, so that the first connecting portion and the second connecting portion form detachable clamping connection.

In one embodiment, the first connecting portion is provided with two first clamping portions extending towards the length direction of the first connecting hole, the two first clamping portions are oppositely arranged to form a first clamping structure, the two first clamping portions are oppositely arranged to form a through hole with an opening at one side, the opening is used for accommodating the third clamping structure to pass through the through hole so as to be connected with the first clamping structure, and a certain distance is reserved between the first clamping portion and the inner wall of the first connecting hole so as to accommodate deformation of the first clamping structure;

the second connecting part is provided with two second clamping parts extending towards the length direction of the second connecting hole, the two second clamping parts are oppositely arranged to form a second clamping structure, the two second clamping parts are oppositely arranged to form a through hole with an opening at one side, the opening is used for accommodating the third clamping structure to pass through the through hole so as to be connected with the second clamping structure, and a certain interval is reserved between the second clamping part and the inner wall of the second connecting hole so as to accommodate deformation of the second clamping structure;

the third clamping structure is a cylinder, and both ends of the third clamping structure are provided with limiting parts so as to prevent the third clamping structure from falling off along the axial direction of the third clamping structure;

the openings of the first clamping structure and the second clamping structure are staggered, and the width of the opening is smaller than the maximum width of the third clamping structure, so that the third clamping structure is limited in the first clamping structure and the second clamping structure in the radial direction.

In one embodiment, the openings of the first and second clamping structures face opposite directions.

In one embodiment, the first clamping portion and the second clamping portion are both arc-shaped, and the third clamping structure is cylindrical.

In one embodiment, the clamping piece comprises a body plate, the third clamping structure is a cylinder protruding on the body plate, one end, far away from the body plate, of the cylinder is provided with a protruding portion with a width larger than that of the third clamping structure, and the body plate and the protruding portion form a limiting portion of the third clamping structure.

In one embodiment, the width of the first and second connection holes is greater than the width of the protruding portion of the third clamping structure, so that the third clamping structure can be inserted into the first and second connection holes from one side of the first and second connection holes.

In one embodiment, the lens further comprises a positioning mechanism, the positioning mechanism comprises a positioning bead and an elastic piece, a positioning hole for installing the positioning mechanism is formed in the body plate of the clamping piece, a groove for containing the positioning bead is formed in the side face, close to the first connecting portion, of the second connecting portion, the positioning bead is connected with the positioning hole through the elastic piece, when the second lens foot is replaced, the positioning bead moves along the positioning hole under the action of the elastic piece and the first connecting portion, when the second lens foot is installed in place, the positioning bead is located in the groove of the second connecting portion, and therefore the second lens foot is prevented from falling out of the first lens foot.

In one embodiment, the first clamping structure, the second clamping structure and the third clamping structure are respectively provided with two groups, and the two third clamping structures are arranged on the same clamping piece.

The utility model has the following beneficial effects:

1. the glasses leg comprises an upper supporting leg and a lower supporting leg, and the upper supporting leg and the lower supporting leg are respectively positioned at the upper side and the lower side of the ear when the glasses leg is worn, so that the ears are prevented from being pressed when the glasses and the headset are worn at the same time, and the wearing comfort level of a user is improved.

2. Divide into first mirror foot and second mirror foot with the mirror foot, and first mirror foot and second mirror foot can dismantle the connection to realize the conversion of earphone mirror foot and conventional mirror foot, the user can be according to the different use occasions and change different mirror feet, and need not to change the picture frame, convenient to use.

3. The first mirror foot and the second mirror foot are connected through the detachable clamping connection, the clamping connection is convenient to operate, tools are not needed, and the mirror foot can be disassembled, assembled and replaced by hands.

Drawings

Fig. 1 is a perspective view of a earpiece for headphones according to the present utility model.

Fig. 2 is a perspective view of the present utility model using a conventional temple.

Fig. 3 is an exploded view of the temple connection structure of embodiment 1 of the present utility model.

Fig. 4 is an exploded view of the temple connection structure of embodiment 2 of the present utility model.

Fig. 5 is an exploded view of the temple connection structure of embodiment 2 of the present utility model.

Wherein: 1 picture frame, 2 mirror foot, 21 first mirror foot, 211 first connecting portion, 2111 first connecting hole, 2112 first joint portion, 22 second mirror foot, 221 upper foot, 222 lower foot, 223 second connecting portion, 2231 second connecting hole, 2232 second joint portion, 2233 recess, 3 joint spare, 31 body portion, 32 cylinder, 33 convex part, 34 locating hole, 4 positioning mechanism, 41 locating bead, 42 spring, 43 erection column.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

Example 1

Referring to fig. 1 and 2, as an embodiment of the present utility model, there is provided a pair of multi-functional glasses, including a glasses frame 1 and glasses legs 2 disposed at both sides of the glasses frame, the glasses legs including earphone legs including upper legs and lower legs, the upper legs and the lower legs being respectively located above and below ears when wearing the glasses, staggered with the headphones, to prevent the ears from being pressed at both sides when wearing the headphones, thereby preventing the ears from being pressed when wearing the glasses and the headphones at the same time, and solving the problem of pressing the ears when wearing the glasses and the headphones at the same time.

When wearing conventional glasses in the prior art, the temples are positioned in the projection area of the ears on the head, so that ear pain can be avoided when wearing glasses and headphones simultaneously only by positioning the upper and lower temples outside the projection area, and thus tilting the upper temples upward by a certain angle. In order to wear the glasses more stably, a lower support leg is arranged, and the lower support leg is positioned below the ears.

For the near-sighted people, the degree of the lenses is fixed in a period of time, and the degree of the lenses is the same no matter whether the earphone is worn or not, but the two support legs of the earpiece of the earphone are far away from ears, so that the earpiece is difficult to fix behind the ears without wearing the headset, that is, the multifunctional glasses with the earpiece are not suitable for daily use, and only glasses with conventional temples can be additionally prepared for daily use. In order to solve this problem, referring to fig. 1 and 2, the temple 2 includes a first temple 21 and a second temple 22, the first temple 21 is connected to the frame 1, the second temple 22 includes two types, that is, the earpiece and the conventional temple, the earpiece includes an upper leg 221 and a lower leg 222, when the earpiece is worn, the upper leg 221 and the lower leg 222 are located above and below the ear, respectively, and are staggered from the headset, the conventional temple includes a conventional leg 220, and when the earpiece is worn, the first and second temples 21 and 22 are detachably connected, so that the type of the second temple can be replaced according to the use requirement. The earpiece is configured to be replaceable, so that a user can freely replace the conventional earpiece and the earpiece according to the use requirement, and referring to fig. 2, the conventional earpiece is a earpiece commonly used for glasses in the prior art, unlike the earpiece, only one of the legs is used, and when the glasses are worn, the leg is located behind the ear, that is, is hung on the ear.

In order to achieve a detachable connection of the first temple 21 and the second temple 22, the first temple 21 is provided with a first connection portion 211 remote from the frame. When the second temple 22 is an earphone temple, the second temple 22 is provided with a second connecting portion 223 for connecting the upper leg 221 and the lower leg 222, and the first connecting portion 211 and the second connecting portion 223 form a connection relationship of detachable joint so that the first temple 21 and the second temple 22 form detachable connection. The detachable connection is to connect the first connection part 211 and the second connection part 223 in a clamped manner, and when the connection structure is not damaged, the connection between the first connection part 211 and the second connection part 223 can be detached. In other embodiments, the first connection portion 211 and the second connection portion 223 may be detachably connected by a screw connection, a magnetic connection, or the like, in addition to the detachable connection. When the second temple 22 is a conventional temple, one end of the conventional temple 220 is provided with a temple connecting piece 23 hinged with the conventional temple 220, and the temple connecting piece 23 is further used for connecting with the first connecting portion 211 of the first temple 21, so that the temple connecting piece 23 also has the same function as the second connecting portion 223, and in the following description about the connection relationship between the first connecting portion 211 and the second connecting portion 223, the connection of the temple connecting piece 23 with the first connecting portion 211 of the first temple 21 is also applicable, so that the conventional temple is connected with the first temple 21.

Referring to fig. 3, a first connection hole 2111 is formed in the first connection portion 211, two first clamping portions 2112 extending in a length direction of the first connection hole 2111 are provided on the first connection portion, and the two first clamping portions 2112 are oppositely arranged to form a first clamping structure, where the first clamping structure specifically is: one side is provided with an open through hole, and the first clamping part 2112 and the inner wall of the first connecting hole 2111 have a certain distance to accommodate the deformation of the first clamping structure. The second connection portion 223 is provided with a second connection hole 2231, the second connection portion 223 is provided with two second clamping portions 2232 extending towards the length direction of the second connection hole 2231, and the two second clamping portions 2232 are oppositely arranged to form a second clamping structure, and the second clamping structure specifically comprises: one side of the second clamping part 2232 is provided with an opening through hole, and a certain distance is reserved between the second clamping part 2232 and the inner wall of the second connecting hole 2231 so as to accommodate deformation of the second clamping structure. Still including the joint spare 3 of connecting first mirror foot 21 and second mirror foot 22, joint spare 3 includes body board 31, and the third joint structure is the cylinder 32 of protruding on body board 31 of establishing, and the one end of keeping away from the body board of cylinder 32 is equipped with the width and is greater than third joint structure's convex part 33, and body board 31 and convex part 33 form the spacing portion of third joint structure. The third clamping structure is arranged in the first clamping structure and the second clamping structure in a penetrating manner, in this example, the first clamping portion 2112 and the second clamping portion 2232 are arc-shaped, and the third clamping structure is a cylinder, so that the third clamping structure and the first clamping structure form detachable clamping connection, and the first connecting portion and the second connecting portion form a clamping connection relationship.

The openings of the first clamping structure and the second clamping structure are staggered, the width of the opening is smaller than the maximum width of the third clamping structure, so that the third clamping structure is limited in the first clamping structure and the second clamping structure in the radial direction of the third clamping structure, but the opening cannot be too small, and the third clamping structure can enter the through hole from the opening under the condition that at least two first connecting parts are outwards spread and deformed. In this example, the opening widths of the first and second clamping structures are smaller than the diameter of the column 32, and the opening orientations of the first and second clamping structures are opposite. The first clamping structure, the second clamping structure and the third clamping structure form clamping connection only in the radial direction of the third clamping structure, and the limiting parts arranged at the two ends of the third clamping structure can prevent the third clamping structure from falling along the axial direction of the third clamping structure, so that the first mirror leg 21 and the second mirror leg 22 are prevented from falling off in the axial direction of the third clamping structure.

In other embodiments, the shapes of the first clamping portion 2112 and the second clamping portion 2232 are not limited to arc shapes, and may be polygonal, and accordingly, the shape of the third clamping structure may be polygonal other than arc shapes, so long as the detachable clamping relationship with the first clamping structure and the second clamping structure can be formed. In addition, the first clamping portion 2112 and the second clamping portion 2232 may be linear and have hooks facing one side at the ends, the hooks of the two first clamping portions 2112 are facing one another, the hooks of the two second clamping portions 2232 are also facing one another, and one side of the hooks facing the through hole is an inclined plane, so as to form a detachable clamping structure.

In order to enable the third clamping structure to pass through the first and second connection holes, the widths of the first and second connection holes should be made larger than the width of the protrusion 33 of the third clamping structure so that the third clamping structure can be inserted into the first and second connection holes from one side of the first and second connection holes 2111 and 2231.

In this example, the first clamping structure, the second clamping structure and the third clamping structure form a clamping connection along the radial direction of the third clamping structure, in other embodiments, the first clamping structure and the second clamping structure may also form clamping grooves or clamping hooks along the axial direction of the third clamping structure, opposite inner side walls of the first connecting hole and the second connecting hole form corresponding clamping grooves or clamping hooks, and the outer wall of a column body forming the third clamping structure is provided with corresponding clamping grooves or clamping hooks, and the clamping hooks and the clamping grooves are mutually corresponding. The third clamping structure is inserted into the first connecting hole and the second connecting hole from one side of the first connecting part and the second connecting part, and the clamping groove or the clamping hook on the column body is in clamping connection with the clamping hook or the clamping groove of the first connecting hole and the second connecting hole. Wherein, the buckle connection is a detachable connection.

Because the clamping structure of the utility model is not limited to rotate in the axial direction of the third clamping structure, in order to fix the relative positions of the first lens leg and the second lens leg, the first clamping structure, the second clamping structure and the third clamping structure are respectively provided with two groups, and the two third clamping structures are arranged on the same clamping piece.

In other embodiments, it is also possible to cancel the clamping member, and if the clamping member is cancelled, corresponding clamping structures should be provided at the first connection portion and the second connection portion, for example, a hook and a slot are provided at the first connection portion and the second connection portion, respectively, so as to form a snap connection.

Referring to fig. 1-3, the workflow of the present embodiment is as follows:

the second mirror foot is installed, the two columns 32 of the clamping piece sequentially penetrate through the first connecting hole 2111 of the first mirror foot 21 and the second connecting hole 2231 of the second mirror foot 22, and the first mirror foot and the second mirror foot are pulled reversely along the length direction of the first connecting part and the second connecting part, so that the columns 32 of the clamping piece are embedded into the first clamping structure and the second clamping structure, and the second mirror foot is connected with the first mirror foot.

The second lens leg is disassembled, the first lens leg and the second lens leg are reversely pushed along the length direction of the first connecting part and the second connecting part, the column body 32 of the clamping piece is separated from the first clamping structure and the second clamping structure, and the two column bodies 32 of the clamping piece are taken down from the first connecting hole 2111 of the first lens leg 21 and the second connecting hole 2231 of the second lens leg 22, so that the second lens leg is separated from the first lens leg.

The second lens leg may be the earphone lens leg shown in fig. 1, or the conventional lens leg shown in fig. 2, and the operations of installing the second lens leg and detaching the second lens leg are separated, and are performed by a user according to the requirements.

Example 2

Referring to fig. 4 and 5, the difference between the present embodiment and embodiment 1 is that the first connecting hole 2111 on the first connecting portion 211 of the first temple 21 is a long-strip-shaped hole, and the first fastening structure is not disposed in the first connecting hole 2111. Therefore, in the use process of the glasses, the clamping connection of the first glasses leg 21 and the second glasses leg 22 is easy to be released, and the use of the glasses is affected. To overcome this problem, the strength of the connection between the first temple 21 and the second temple 22 is increased, and the positioning mechanism 4 is provided on the clip 3. The positioning mechanism 4 comprises a positioning bead 41 and a spring 42, the clamping piece 3 is provided with a positioning hole 34 for installing the positioning mechanism 4, the positioning hole 34 is a blind hole, one end of the spring 42 is fixedly connected with the bottom of the positioning hole 34, and the other end of the spring 42 is fixedly connected with the positioning bead 41. The surface of the second connecting portion 223 of the second temple 22, which is close to the first connecting portion 211, is provided with a groove 2233 for accommodating the positioning bead 41, when the spring naturally extends, the positioning bead 41 protrudes to the surface of the body plate 31 of the clamping piece 3, and the positioning bead 41 is located in the groove 2233, and at this time, the first temple 21 and the second temple 22 are connected to form a complete temple. When the second temple 22 needs to be detached, the second temple 22 moves in a direction approaching the frame 1, the positioning bead 41 moves toward the positioning hole 34 under the action of the second temple 22, and the spring 42 contracts.

In order to facilitate the installation of the positioning mechanism 4, the positioning mechanism 4 further comprises a mounting column 43, a cylindrical cavity is formed in the mounting column 43, a spring 42 is arranged in the cavity of the mounting column 43, two ends of the spring 42 are respectively connected with the inner bottom wall of the cavity of the mounting column 43 and the positioning beads 41, and the size of the positioning beads 41 corresponds to the size of the cavity, so that the positioning beads 41 can move along the inner wall of the cavity. The mounting posts 43 are arranged such that the positioning mechanism 4 forms a single module, and the mounting posts 43 are inserted into the positioning holes 34 of the clamping members 3, thereby facilitating the mounting of the positioning mechanism 4.

In addition, the spring 42 may be other elastic members, such as a silica gel block or a rubber block having a certain elasticity.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a multifunctional glasses, its characterized in that, including the picture frame with set up the mirror foot in the picture frame both sides, the mirror foot includes earphone mirror foot, and earphone mirror foot includes stabilizer blade and lower stabilizer blade, when wearing glasses, goes up stabilizer blade and lower stabilizer blade and is located the top and the below of ear respectively, avoids with the earphone for avoid mirror foot and headphone to be located the both sides of ear simultaneously, thereby the ear is oppressed when preventing to wear glasses and headphone simultaneously.

2. The pair of multi-functional eyeglasses of claim 1 wherein the temple comprises a first temple and a second temple, the first temple being connected to the frame, the second temple comprising two types, the earpiece temple and the conventional temple, respectively, the conventional temple comprising a foot which is positioned behind the ear when worn, the first temple and the second temple being detachably connected so that the type of second temple can be changed as desired for use.

3. The pair of multi-purpose eyeglasses of claim 2 wherein the first temple is provided with a first connecting portion remote from the frame and the second temple is provided with a second connecting portion connecting the upper and lower legs, the first and second connecting portions forming a releasable snap-fit connection such that the first and second temples form a releasable connection.

4. The pair of multifunctional glasses according to claim 3, wherein the first connecting portion is provided with a first connecting hole, the first connecting hole is internally provided with a first clamping structure, the second connecting portion is provided with a second connecting hole, the second connecting hole is internally provided with a second clamping structure, the pair of multifunctional glasses further comprises a clamping piece, the clamping piece is provided with a third clamping structure, the third clamping structure is arranged in the first clamping structure and the second clamping structure in a penetrating mode, the third clamping structure and the first clamping structure form a detachable clamping mode, and the third clamping structure and the second clamping structure form a detachable clamping mode, so that the first connecting portion and the second connecting portion form a detachable clamping connection relation.

5. The pair of multi-functional glasses according to claim 4, wherein the first connecting portion is provided with two first clamping portions extending in a length direction of the first connecting hole, the two first clamping portions are oppositely arranged to form a first clamping structure, the two first clamping portions are oppositely arranged to form a through hole with an opening at one side, the opening is used for accommodating the third clamping structure to pass through the opening, the third clamping structure enters the through hole from the opening, so that the third clamping structure is connected with the first clamping structure, and a certain interval is reserved between the first clamping portion and the inner wall of the first connecting hole to accommodate deformation of the first clamping structure;

the second connecting part is provided with two second clamping parts extending towards the length direction of the second connecting hole, the two second clamping parts are oppositely arranged to form a second clamping structure, the two second clamping parts are oppositely arranged to form a through hole with an opening at one side, the opening is used for accommodating a third clamping structure to pass through the opening, the third clamping structure enters the through hole from the opening, and therefore the third clamping structure is connected with the second clamping structure, and a certain interval is reserved between the second clamping part and the inner wall of the second connecting hole to accommodate deformation of the second clamping structure;

the third clamping structure is a cylinder, and both ends of the third clamping structure are provided with limiting parts so as to prevent the third clamping structure from falling off along the axial direction of the third clamping structure;

the openings of the first clamping structure and the second clamping structure are staggered, and the width of the opening is smaller than the maximum width of the third clamping structure, so that the third clamping structure is limited in the first clamping structure and the second clamping structure in the radial direction.

6. The pair of multi-purpose eyeglasses of claim 5, wherein the openings of the first and second clip structures are oppositely oriented.

7. The pair of multi-purpose eyeglasses of claim 5 wherein the locking member comprises a body plate, the third locking structure is a post protruding from the body plate, a protrusion having a width greater than the width of the third locking structure is disposed at an end of the post away from the body plate, and the body plate and the protrusion form a stop portion of the third locking structure.

8. The pair of multi-purpose eyeglasses of claim 7, wherein the first and second connection holes have a width greater than a width of the protrusion of the third clamping structure, such that the third clamping structure can be inserted into the first and second connection holes from one side of the first and second connection holes.

9. The pair of multi-purpose eyeglasses of claim 8, wherein the first, second and third fastening structures are respectively provided in two groups, and the two third fastening structures are disposed on the same fastening member.

10. The pair of multifunctional glasses according to claim 3, wherein the first connecting portion is provided with a first connecting hole, the second connecting portion is provided with a second connecting hole, a second clamping structure is arranged in the second connecting hole, the pair of multifunctional glasses further comprises a clamping piece, a third clamping structure is arranged in the first connecting hole and the second clamping structure in a penetrating manner, and the third clamping structure and the second clamping structure form a clamping and disassembling joint, so that the first connecting portion and the second connecting portion indirectly form a detachable and clamped connection relationship;

the second connecting part is provided with two second clamping parts extending towards the length direction of the second connecting hole, the two second clamping parts are oppositely arranged to form a second clamping structure, the two second clamping parts are oppositely arranged to form a through hole with an opening at one side, the opening is used for accommodating a third clamping structure to pass through the opening, the third clamping structure enters the through hole from the opening, and therefore the third clamping structure is connected with the second clamping structure, and a certain interval is reserved between the second clamping part and the inner wall of the second connecting hole to accommodate deformation of the second clamping structure;

the third clamping structure is a cylinder, and both ends of the third clamping structure are provided with limiting parts so as to prevent the third clamping structure from falling off along the axial direction of the third clamping structure;

the clamping piece comprises a body plate, the third clamping structure is a column body convexly arranged on the body plate, one end of the column body far away from the body plate is provided with a convex part with the width larger than that of the third clamping structure, and the body plate and the convex part form a limiting part of the third clamping structure;

still include positioning mechanism, positioning mechanism includes locating bead and elastic component, has offered the locating hole that is used for installing positioning mechanism on the body board of joint spare, has offered the recess that is used for holding the locating bead on the side that is close to first connecting portion of second connecting portion, and locating bead and locating hole pass through the elastic component and connect, and when changing the second mirror foot, the locating bead moves along the locating hole under the effect of elastic component and first connecting portion, and when the second mirror foot was installed in place, locating bead is located in the recess of second connecting portion to prevent that the second mirror foot from deviate from first mirror foot.