CN220983658U - Titanium alloy glasses - Google Patents

Abstract

The utility model relates to the technical field of glasses, in particular to titanium alloy glasses, which comprise two lens frames and lenses arranged in the two lens frames, wherein side walls of one side of each of the two lens frames are respectively connected with a glasses leg, each glasses leg comprises a first connecting piece, a second connecting piece and a third connecting piece, one end of each first connecting piece is fixed on one side wall of each lens frame, and the other end of each first connecting piece is hinged with one end of each second connecting piece. The utility model can fix the extension rod through the cylindrical pin, is convenient for the extension rod to be taken in the arc-shaped part, presses the pressing block and the telescopic spring, can lead the extension rod to be separated from the clamping state, is convenient for the extension rod to be taken out of the arc-shaped part more easily for use, increases the length of the arc-shaped part when the extension rod is used, and hooks the position behind the ear while extending the arc-shaped length, and increases the effect by matching with the anti-skid soft layer, and when a human body moves greatly, the extension rod hooks the position behind the ear, so that the glasses are worn more firmly under the condition.

Description

Titanium alloy glasses

Technical Field

The utility model relates to glasses, in particular to titanium alloy glasses, and belongs to the technical field of glasses.

Background

Glasses are used as articles commonly used in life study, along with the development of the age, more and more people can cause myopia of eyes due to the fact that the electronic products are used for a long time, so when the glasses are sold, the market prospect is wide, the people can be increased at any time, the development of the glasses is also one hundred of contend, various patterns and materials are layered, the glasses of the titanium alloy glasses frame are outstanding in advantages of low material density, high strength, good mechanical performance, strong corrosion resistance and the like, are popular by a plurality of people, and have a plurality of advantages compared with the common glasses, and the market selling prospect is wide.

According to the titanium alloy glasses leg that can prevent landing that chinese patent publication No. CN218630394U discloses, the one end of titanium alloy glasses leg is provided with preceding mirror leg component, and the other end of preceding mirror leg component is provided with mirror leg connecting element, and the other end of mirror leg connecting element is provided with back mirror leg component, is provided with the curved component of mirror leg on the back mirror leg component, and the downside of back mirror leg component is provided with the indent breach, is provided with the picture frame component on the preceding mirror leg component of titanium alloy glasses leg, has contained right picture frame and left picture frame on the picture frame component, is provided with the nose on the central point of picture frame component and holds in the palm the structure.

Based on the above patent search and combining the equipment discovery in the prior art, above-mentioned equipment is when using, when this titanium alloy glasses were worn, the indent breach on the titanium alloy mirror leg is aimed at on the wearer's ear, it can reduce the condition that glasses drop, in order to further reduce the emergence of drop condition, simultaneously install antislip strip structure, antislip strip structure respectively on the titanium alloy mirror leg, thereby increase the frictional force when wearing, in order to reduce the emergence of glasses drop condition, but simple through indent breach and antislip strip to glasses are anti-drop, the scene that can apply is single, the human body is when moving by a wide margin, the head also can follow and take place to rock, and violent motion can lead to glasses to easily dropping down from the ear, and indent breach and antislip strip can not be fine prevention under this kind of circumstances, fixed degree is lower between glasses and ear, when glasses are moved upwards because of the human motion, indent breach is difficult to exert effect at this moment, finally will lead to dropping and damaging to taking place for glasses.

Accordingly, there is a need for improvements in titanium alloy spectacles to address the above-described problems.

Disclosure of utility model

The utility model aims to provide titanium alloy glasses, the extension rod can be fixed through the cylindrical pin, the extension rod is conveniently collected into the arc-shaped part, the pressing block and the telescopic spring can enable the extension rod to be separated from a clamping state, the extension rod is conveniently taken out of the arc-shaped part for use more easily, when the extension rod is used, the length of the arc-shaped part is increased, the phenomenon that the extension rod falls off due to insufficient fixing degree between the glasses and a human body when the glasses are worn is avoided, the extension rod extends the arc-shaped length and hooks the position behind the ears, the effect is improved by matching with the anti-skid soft layer, and when the human body moves greatly, the extension rod hooks the position behind the ears, so that the glasses are more firmly worn under the condition.

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps: the two lens frames are respectively connected with a lens leg on one side wall of each lens frame, each lens leg comprises a first connecting piece, a second connecting piece and a third connecting piece, one end of each first connecting piece is fixed on one side wall of each lens frame, the other end of each first connecting piece is hinged with one end of each second connecting piece, and the inner side wall of the other end of each second connecting piece is connected with a telescopic rod in a sliding manner;

The telescopic link is kept away from the one end of diapire in the second connecting piece with third connecting piece one end looks fixed connection, the third connecting piece is kept away from the one end of second connecting piece is arc portion, the sliding tray has been seted up in the arc portion, the joint has the extension pole in the sliding tray, the extension pole is close to the one end of the interior diapire of sliding tray is equipped with and is used for right the fixed subassembly of extension pole is fixed.

Preferably, the fixed subassembly includes joint frid, cylindricality round pin, side pipe and buckle spring, joint frid one end lateral wall with the extension rod is close to the one end looks fixed connection of diapire in the sliding tray, the joint frid is kept away from the one end of extension rod has seted up a pinhole, the embedding of side pipe is in on the lateral wall of arc one side, cylindricality round pin diapire with side pipe is close to the one end looks sliding connection of sliding tray, buckle spring fixed connection is in cylindricality round pin diapire with the department between the intraductal diapire of side pipe.

Preferably, the arc portion is kept away from fixedly connected with pipe on the side wall of one side of side pipe, pipe one end runs through arc portion lateral wall and extends to the arc portion outside, the pipe is kept away from the inboard one end sliding connection of arc portion has the pressing block, pressing block lower terminal surface with fixedly connected with presses the spring between the diapire in the pipe.

Preferably, the lower end surface of the pressing block is fixedly connected with a push rod, one end of the push rod penetrates through the inner bottom wall of the circular tube and extends into the sliding groove, the push rod is not contacted with the sliding groove, and the push rod and the cylindrical pin are located at the same central axis.

Preferably, a second pin hole is formed in one end of the clamping groove plate, the second pin hole is communicated with the first pin hole, a spring tube is fixedly connected to the inner bottom wall of the sliding groove, one end of the spring tube is embedded into the third connecting piece, a telescopic column is slidably connected to the other end of the spring tube, and a telescopic spring is fixedly connected between the end face of one end in the spring tube and the inner bottom wall of the spring tube.

Preferably, the telescopic link is last to have seted up rectangular through-hole, a plurality of location circular slot has been seted up to telescopic link one side lateral wall, and a plurality of location circular slot linear equidistance sets up, a plurality of location circular slot all with rectangular through-hole wants the intercommunication.

Preferably, the second connecting piece is close to the one end lateral wall embedding of third connecting piece has the screw thread circle piece, screw thread circle piece one end threaded connection has the bolt, the one end that the screw thread circle piece was kept away from to the bolt runs through the second connecting piece is kept away from one side lateral wall of screw thread circle piece, just the screw thread circle piece is close to the one end of bolt runs through rectangular through-hole and with rectangular through-hole does not contact, a plurality of the constant head tank all with the screw bolt is kept away from the one end looks joint of screw thread circle piece.

Preferably, the side surface of one side of the second connecting piece is fixedly connected with an anti-slip square bar, and an inner arc surface of the extension rod is provided with an anti-slip soft layer.

The utility model has at least the following beneficial effects:

1. Can fix the extension rod through the cylindricality round pin, make things convenient for the extension rod to collect into arc portion in, and press briquetting and extension spring, can make the extension rod break away from joint state, and make things convenient for the extension rod to take out the use in the arc portion more easily, when using the extension rod, increase the length of arc portion, make when wearing glasses, avoided taking place the phenomenon that drops because of the degree of fixing between glasses and the human body is insufficient, the extension rod is when extending arc length, and catch on the post-the-ear position, cooperation antiskid soft layer increases its effect, when the human body moves by a wide margin, the extension rod catches on post-the-ear position department, make glasses more firm that wear at this condition, be difficult for droing, also conveniently collect, the appearance is pleasing to the eye not influenced.

2. Through the joint that uses between bolt and the circular slot of a plurality of location, but the distance of freely stretching out and drawing back and fixing the telescopic link left and right movement, and then the left and right distance of adjusting arc portion can be used to according to the individual and adjust the left and right distance of third connecting piece and arc portion, uses at the cooperation extension rod, can make the extension rod more laminating in the distance between with the ear, makes its anti-skidding effect better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of an isometric structure provided by the present utility model;

Fig. 2 is a schematic view of a structure of a temple according to the present utility model;

FIG. 3 is a schematic view of a cross-sectional structure of a temple according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure shown in FIG. 3A according to the present utility model;

FIG. 5 is a schematic diagram of a portion of the structure provided by the present utility model;

FIG. 6 is a schematic view of an explosion structure of a fixing assembly according to the present utility model;

FIG. 7 is a schematic diagram of a sliding groove structure according to the present utility model;

fig. 8 is a schematic diagram of a portion of the structure provided by the present utility model.

In the figure, 11, a lens frame; 2. a lens; 3. a temple; 4. a first connector; 5. a second connector; 6. a third connecting member; 7. a telescopic rod; 8. an arc-shaped portion; 9. a sliding groove; 10. an extension rod; 110. a fixing assembly; 111. the slot plate is clamped; 112. a cylindrical pin; 113. square tubes; 114. a buckle spring; 12. a first pin hole; 120. a second pin hole; 13. a round tube; 14. pressing the blocks; 15. pressing the spring; 16. a push rod; 17. a spring tube; 18. a telescopic column; 19. a telescopic spring; 20. positioning the round groove; 21. a long through hole; 22. a threaded round block; 23. a bolt; 24. an anti-slip square strip; 25. an anti-slip soft layer.

Detailed Description

The following detailed description of embodiments of the present application will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present application can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

As shown in fig. 1-8, the titanium alloy glasses provided in this embodiment include two lens frames 11 and install the lens 2 in two lens frames 11, two lens frames 11 one side lateral walls are connected with mirror leg 3 respectively, mirror leg 3 includes first connecting piece 4, second connecting piece 5 and third connecting piece 6, first connecting piece 4 one end is fixed at lens frame 11 one side lateral wall, the other end of first connecting piece 4 is articulated with second connecting piece 5 one end, second connecting piece 5 other end inside wall sliding connection has telescopic link 7, telescopic link 7 is kept away from the one end of second connecting piece 5 inner bottom wall and is connected with third connecting piece 6 one end looks fixed connection, one end that third connecting piece 6 kept away from second connecting piece 5 is arc portion 8, set up sliding tray 9 in the arc portion 8, the joint has extension rod 10 in the sliding tray 9, extension rod 10 and sliding tray 9 are located circular-arc like equally, and with arc portion 8 phase, the width of sliding tray 9 port department is less than sliding tray 9 inside width, the one end is close to the inner bottom wall of sliding tray 10 and is equipped with extension rod 10 and is used for fixing extension rod 10 when wearing the fixed component, the extension rod 110 is used more firmly, the extension rod is used for increasing the length of extension rod 110.

As shown in fig. 4, 6, 7 and 8, the fixing assembly 110 includes a clamping groove plate 111, a cylindrical pin 112, a square tube 113 and a fastening spring 114, wherein one end side wall of the clamping groove plate 111 is fixedly connected with one end of the extension rod 10 close to the inner bottom wall of the sliding groove 9, the width of the clamping groove plate 111 is larger than the width of the port of the sliding groove 9, so that when the clamping groove plate 111 slides out from the port of the sliding groove 9, a first pin hole 12 is not dropped off, one end of the clamping groove plate 111 far away from the extension rod 10 is provided with a first pin hole 12, the square tube 113 is embedded on one side wall of the arc-shaped part 8, the bottom wall of the cylindrical pin 112 is slidingly connected with one end of the square tube 113 close to the sliding groove 9, the fastening spring 114 is fixedly connected between the bottom wall of the cylindrical pin 112 and the inner bottom wall of the square tube 113, when the extension rod 10 is in a clamped state, the cylindrical pin 112 is positioned in the first pin hole 12, one end side of the cylindrical pin 112 positioned in the first pin hole 12 is a round corner, when the cylindrical pin 112 is convenient to be in an initial state, the cylindrical pin is slid into the first pin hole 12 and clamped in the first pin hole 12, a circular tube 13 is fixedly connected to the side wall of one side of the arc-shaped part 8 far away from the square tube 113, one end of the circular tube 13 penetrates through the side wall of the arc-shaped part 8 and extends to the outer side of the arc-shaped part 8, one end of the circular tube 13 far away from the inner side of the arc-shaped part 8 is slidably connected with a pressing block 14, a pressing spring 15 is fixedly connected between the lower end surface of the pressing block 14 and the inner bottom wall of the circular tube 13, the lower end surface of the pressing block 14 is fixedly connected with a push rod 16, one end of the push rod 16 penetrates through the inner bottom wall of the circular tube 13 and extends into the sliding groove 9 and is not contacted with the sliding groove 9, the push rod 16 and the cylindrical pin 112 are positioned at the same central axis, when the push rod 16 is in an initial state, the position far away from the first pin hole 12 is not positioned in the first pin hole 12, a second pin hole 120 is formed at one end of the clamping groove plate 111, the second pin hole 120 is communicated with the first pin hole 12, the upper and lower width of the second pin hole 120 is consistent with the upper and lower width of the ejector rod 16 and is positioned on the same horizontal line, a spring tube 17 is fixedly connected to the inner bottom wall of the sliding groove 9, one end of the spring tube 17 is embedded into the third connecting piece 6, the other end of the spring tube 17 is slidably connected with a telescopic column 18, a telescopic spring 19 is fixedly connected between the end face of one end of the telescopic column 18 positioned in the spring tube 17 and the inner bottom wall of the spring tube 17, and when the extension rod 10 is in a clamping state, the end face of one end of the telescopic column 18, which is far away from the spring tube 17, is contacted with the side face of one side of the clamping groove plate 111, which is far away from the extension rod 10;

When one end of the extension rod 10 is positioned at the outer side of the sliding groove 9, the extension rod 10 is pushed to be positioned at the outer end at the moment, so that the extension rod 10 slides into the sliding groove 9 until the inner bottom wall of the sliding groove 9 is moved, the extension rod 10 continuously moves to push the clamping groove plate 111 to continuously move forwards, the side wall of one side of the clamping groove plate 111 far away from the extension rod 10 presses one end of the cylindrical pin 112 with a round angle until the cylindrical pin 112 slides into a first pin hole 12 on the clamping groove plate 111 in the moving process, at the moment, one end of the extension rod 10 far away from the clamping groove plate 111 is engaged with the outer side wall of the arc-shaped part 8, when the cylindrical pin 112 is clamped into the first pin hole 12, the side surface of one side of the clamping groove plate 111 and one end surface of the telescopic column 18 mutually form a mutual extrusion state, when the extension rod 10 is required to be used, the pressing block 14 is pressed, and then the ejector rod 16 is driven to move forwards, when the cylindrical pin 112 is propped against the end face of one end in the first pin hole 12, the pressing block 14 is continuously pressed, the cylindrical pin 112 is extruded into the first pin hole 12, at the moment, under the action of the telescopic spring 19 driving the telescopic column 18 to be extruded forwards, the clamping groove plate 111 drives the extension rod 10 to move outwards from the port position of the sliding groove 9, when the clamping groove plate 111 moves, the ejector rod 16 is positioned in the second pin hole 120, at the moment, the cylindrical pin 112 propped against by the ejector rod 16 is positioned on the side wall of one side of the clamping groove plate 111, is separated from the first pin hole 12, then the pressing block 14 is loosened, the ejector rod 16 slides out of the second pin hole 120, under the action of the extrusion of the telescopic column 18, the clamping groove plate 111 drives the extension plate to be far away from the position of the cylindrical pin 112, at the moment, the extension rod 10 positioned at the port position of the sliding groove 9 is already moved to one end, and then the extension rod 10 is pulled out continuously by hand.

Further, as shown in fig. 2 and fig. 5, the telescopic rod 7 is provided with a long through hole 21, one side wall of one side of the telescopic rod 7 is provided with a plurality of positioning circular grooves 20, the plurality of positioning circular grooves 20 are linearly equidistantly arranged, the plurality of positioning circular grooves 20 are all communicated with the long through hole 21, one end side wall of the second connecting piece 5, which is close to the third connecting piece 6, is embedded with a threaded circular block 22, one end of the threaded circular block 22 is in threaded connection with a bolt 23, one end of the bolt 23, which is far away from the threaded circular block 22, penetrates through the second connecting piece 5, one end of the threaded circular block 22, which is close to the bolt 23, penetrates through the long through hole 21 and is not in contact with the long through hole 21, the plurality of positioning circular grooves 20 are all in clamping connection with one end, which is far away from the threaded circular block 22, of the bolt 23 is screwed, so that the bolt 23 is not in clamping connection with the positioning circular grooves 20, at this moment, the movable telescopic rod 7 slides left and right, when moving to a proper position, the bolt 23 is screwed up, so that the bolt 23 is clamped in the positioning circular grooves 20 again, and the fixing of the telescopic rod 7 is completed.

Further, as shown in fig. 1 and 8, the side surface of one side of the second connecting piece 5 is fixedly connected with an anti-slip square bar 24, the inner arc surface of the extension rod 10 is provided with an anti-slip soft layer 25, the anti-slip square bar 24 can further prevent the glasses from falling off, the friction force between the glasses and the skin of a human body is increased, and the anti-slip soft layer 25 is anti-slip, and meanwhile, the softness of the anti-slip soft layer can protect the ears of the human body, so that the comfort of the extension rod 10 is also increased.

As shown in fig. 1 to 8, the principles of the titanium alloy glasses provided in this embodiment are as follows: when the telescopic rod is used, the bolt 23 is loosened, the bolt 23 and the positioning circular groove 20 are not clamped, the telescopic rod 7 can slide left and right at the moment, when the telescopic rod is moved to a proper position, the bolt 23 is screwed down, the bolt 23 is clamped in the positioning circular groove 20 again, the fixation of the telescopic rod 7 is completed at the moment, then when the telescopic rod 10 is used, the pressing block 14 is pressed down, the push rod 16 is driven to move forwards, when the push rod 112 is propped against the end face of one end of the cylindrical pin 112 in the first pin hole 12, the pressing block 14 is continuously pressed, the cylindrical pin 112 is extruded into the first pin hole 12, at the moment, under the action of the telescopic spring 19 driving the telescopic rod 18 to extrude forwards, the clamping groove plate 111 drives the telescopic rod 10 to move outwards from the port of the sliding groove 9, when the clamping groove plate 111 moves, the push rod 16 is positioned in the second pin hole 120, at the moment, the cylindrical pin 112 propped against one side of the clamping groove plate 111 is positioned on the side wall of the side of the clamping groove plate 111, the push rod 16 is separated from the first pin hole 12, at the moment, the push rod 16 is released from the pressing block 14 is pushed out of the initial state, the cylindrical pin 16 slides from the second pin hole 120, the telescopic rod 18 is pushed out of the end of the sliding groove 10 under the action of the clamping groove 18, and the telescopic rod is driven to move from the end of the telescopic rod 10, and the telescopic rod is far from the end of the sliding groove 10.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (8)

1. Titanium alloy glasses, including two lens frames (11) and install lens (2) in two in lens frame (11), its characterized in that: two side walls at one side of the lens frame (11) are respectively connected with a lens leg (3), the lens legs (3) comprise a first connecting piece (4), a second connecting piece (5) and a third connecting piece (6), one end of the first connecting piece (4) is fixed at the side wall at one side of the lens frame (11), the other end of the first connecting piece (4) is hinged with one end of the second connecting piece (5), and the inner side wall at the other end of the second connecting piece (5) is connected with a telescopic rod (7) in a sliding manner;

The telescopic link (7) keep away from the one end of diapire in second connecting piece (5) with third connecting piece (6) one end looks fixed connection, third connecting piece (6) are kept away from the one end of second connecting piece (5) is arc portion (8), sliding tray (9) have been seted up in arc portion (8), joint has extension rod (10) in sliding tray (9), extension rod (10) are close to the one end of diapire is equipped with and is used for right in extension rod (10) fixed subassembly (110).

2. The titanium alloy spectacles of claim 1, wherein: the fixing assembly (110) comprises a clamping groove plate (111), a cylindrical pin (112), a square tube (113) and a buckle spring (114), wherein one end side wall of the clamping groove plate (111) is fixedly connected with one end of the inner bottom wall of the sliding groove (9) close to the extension rod (10), the clamping groove plate (111) is far away from one end of the extension rod (10) and provided with a first pin hole (12), the square tube (113) is embedded into one side wall of the arc-shaped part (8), the bottom wall of the cylindrical pin (112) is in sliding connection with one end of the square tube (113) close to the sliding groove (9), and the buckle spring (114) is fixedly connected between the bottom wall of the cylindrical pin (112) and the inner bottom wall of the square tube (113).

3. The titanium alloy spectacles of claim 1, wherein: arc portion (8) are kept away from fixedly connected with pipe (13) on the side wall of one side of side pipe (113), pipe (13) one end runs through arc portion (8) lateral wall and extend to arc portion (8) outside, pipe (13) are kept away from the inboard one end sliding connection of arc portion (8) has pressing block (14), pressing block (14) lower terminal surface with fixedly connected with presses spring (15) between the interior bottom wall of pipe (13).

4. A titanium alloy spectacles according to claim 3, wherein: the lower end face of the pressing block (14) is fixedly connected with a push rod (16), one end of the push rod (16) penetrates through the inner bottom wall of the round tube (13) to extend into the sliding groove (9) and is not in contact with the sliding groove (9), and the push rod (16) and the cylindrical pin (112) are located at the same central axis.

5. The titanium alloy spectacles of claim 2, wherein: the novel spring clamping groove comprises a clamping groove plate (111), and is characterized in that a second pin hole (120) is formed in one end of the clamping groove plate (111), the second pin hole (120) is communicated with the first pin hole (12), a spring tube (17) is fixedly connected to the inner bottom wall of the sliding groove (9), one end of the spring tube (17) is embedded into the third connecting piece (6), a telescopic column (18) is slidably connected to the other end of the spring tube (17), and the telescopic column (18) is located between one end face of the spring tube (17) and the inner bottom wall of the spring tube (17) and is fixedly connected with a telescopic spring (19).

6. The titanium alloy spectacles of claim 1, wherein: the telescopic rod is characterized in that a long through hole (21) is formed in the telescopic rod (7), a plurality of positioning round grooves (20) are formed in the side wall of one side of the telescopic rod (7), the positioning round grooves (20) are linearly equidistantly arranged, and the positioning round grooves (20) are communicated with the long through hole (21).

7. The titanium alloy spectacles of claim 1, wherein: the second connecting piece (5) is close to one end lateral wall embedding of third connecting piece (6) has screw thread circle piece (22), screw thread circle piece (22) one end threaded connection has bolt (23), the one end that screw thread circle piece (22) were kept away from to bolt (23) runs through one side lateral wall that screw thread circle piece (22) was kept away from to second connecting piece (5), just screw thread circle piece (22) are close to one end of bolt (23) runs through rectangular through-hole (21) and with rectangular through-hole (21) contactless, a plurality of location circular slot (20) all with bolt (23) are kept away from one end looks joint of screw thread circle piece (22).

8. The titanium alloy spectacles of claim 1, wherein: the side face of one side of the second connecting piece (5) is fixedly connected with an anti-slip square bar (24), and an inner arc face of the extension rod (10) is provided with an anti-slip soft layer (25).