JP3080818U - Lens mounting structure for frameless glasses - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent the field of view when wearing spectacles, to more securely hold and fix the lens, to provide excellent safety, and to clean the lens surface. The present invention also provides a lens mounting structure for frameless eyeglasses with almost no hindrance. SOLUTION: On the front side of the lens 12, a connecting member 20 for connecting the lens 12 to a bridge and / or a bridge is provided.
Is arranged. The connecting member 20 is connected to the first lens hole 14.
The first connection hole 26 communicating with the second lens hole 1
6 and a second connecting hole 28 communicating with the second connecting hole 28. The first fastening member 30 is inserted into the first connection hole 26 from the rear surface side of the lens 12 via the first lens hole 12. Similarly, the second connection hole 28 is provided with the second lens hole 28.
, The second fastening member 36 is inserted. The first fastening member 30 and the second fastening member 36 respectively
Has a larger shaft diameter than the hole diameters of the connection hole 26 and the second lens hole 28.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lens mounting structure for frameless eyeglasses.

[0002]

[Prior art]

 FIG. 24 is an exploded perspective view showing an essential part of a conventional lens mounting structure for frameless eyeglasses, which is a background of the present invention, and FIG. 25 is a sectional view of the lens mounting structure seen from a plane side. The conventional lens mounting structure 1 for frameless eyeglasses includes, for example, a plastic lens 2 having a circular through hole 2a. A lens stopper 3 is arranged from the front side of the lens 2. The lens stopper 3 has an L-shaped stopper main body 4. The stopper member main body 4 has a ring-shaped stopper piece 5 formed at one longitudinal end thereof, and a contact piece 6 formed at the other longitudinal end thereof. The contact piece 6 is in contact with the side edge 2b of the lens 2 to fix the lens 2 so as not to move, and is connected to the lens 7 of the spectacles. The wisdom 7 is rotatably connected to a temple (not shown) via a hinge (not shown). The stopper piece 5 of the lens stopper member 3 is arranged so as to correspond to the through hole 2 a of the lens 2, and is fixed by a fixing means including a metal screw 8 and a nut 9, for example.

[0003]

[Problems to be solved by the invention]

 However, in such a conventional lens mounting structure 1 for frameless glasses, due to the mounting structure of the lens 2 and the lens 7, the distance between the stop piece 5 and the contact piece 6 of the lens stop member 3 is increased. The position of the through hole 2a opened in the lens 2 is determined. Therefore, in the conventional lens mounting structure 1 for frameless glasses, if the position of the through hole 2a of the lens 2 is deviated from a predetermined position for some reason, the lens fixing member 3 is attached to the side edge 2b of the lens 2. It is difficult to stably fix the lens 2 by firmly contacting the contact piece 5. That is, when the distance from the side edge of the lens 2 to the through hole 2a is longer than necessary, the contact piece 6 cannot be brought into contact with the side edge 2b of the lens 2, and conversely, If the distance from the side edge of the lens 2 to the through hole 2a becomes shorter than necessary, a gap is formed between the contact piece 6 and the side edge 2b of the lens 2, and the lens 2 Cannot be connected successfully. Therefore, in the event that such an inconvenience occurs, the through-hole 2a is re-opened in the lens 2 again, or the contact of the lens stopper 3 is made so as to correspond to the position of the through-hole 2a opened in the lens 2. The arrangement of the contact pieces 6 had to be changed, which was very troublesome. Further, in the lens mounting structure 1 for frameless spectacles shown in this conventional example, since the abutment piece 6 is formed on the lens stopper member 3, the visibility range when the spectacles are put on is restricted accordingly, and The shape of the lens stopper 3 is also complicated. In this case, if the contact piece 6 is not formed, the lens 2 rotates around the through hole 2 a of the lens 2, and the resulting loosening phenomenon occurs in the mounting portion between the lens 2 and the lens stopper 3. There was a high possibility that it would occur. Further, in the lens mounting structure 1, since the angular portions such as the screws 8 and the nuts 9 protrude from the rear surface side of the lens 2, safety when wearing glasses is threatened, or the lens 2 surface is cleaned. When wiping with a cleaning cloth or the like, there was a case where the cleaning cloth or the like was damaged by the angular protrusion. Further, in this lens mounting structure 1, since the lens stopper 3 is fixed by fixing means composed of a metal screw 8 and a nut 9, if an excessive tightening force is applied to the nut 9, a plastic Lens 2 may be damaged.

[0004] Therefore, the main object of the present invention is not to limit the field of view when wearing glasses, and to more securely hold and fix the lens, and is excellent in safety, An object of the present invention is to provide a lens mounting structure for frameless eyeglasses, which hardly hinders cleaning of a lens surface.

[0005]

[Means for Solving the Problems]

 The present invention according to claim 1 provides a lens, a first lens hole penetrating from one principal surface side of the lens to the other principal surface side of the lens near the edge of the lens, and a distance from the first lens hole. A second lens hole disposed on one side of the main surface of the lens, a connecting member for connecting the lens to the lens and / or the bridge, and a first member provided on the connecting member. A first connection hole having a portion communicating with the first lens hole, a second connection hole provided on the connection member and having a portion communicating with the second lens hole, and one of the lenses A shaft diameter that is inserted into the first lens hole and the first connection hole from the main surface side or the other main surface side and is larger than the hole diameter of the first lens hole and / or the first connection hole. And a second lens hole from one of the principal surface side or the other principal surface side of the lens. And a second fastening member inserted into the second connection hole and having a shaft diameter larger than the diameter of the second lens hole and the second connection hole. This is a lens mounting structure for frameless eyeglasses, in which the lens and the connecting member are connected and fixed by the second fastening member. The present invention according to claim 2 is dependent on the invention of claim 1, wherein the connecting member includes a locking body having a first connecting hole, and the first connecting hole includes a bottomed hole. Wherein the first fastening member is a lens mounting structure for frameless eyeglasses inserted into the bottomed hole from the other main surface side of the lens via the first lens hole. The invention according to claim 3 is dependent on the invention of claim 1, wherein the first connection hole portion includes a through hole penetrating the connection member, and the through hole includes the first main surface side of the lens. Or, a lens mounting structure for frameless eyeglasses into which a first fastening member is inserted from the other main surface side. The invention according to claim 4 is dependent on the invention of claim 1, wherein the second connection hole is a bottomed hole, and the bottomed hole is provided with a second connection hole from the other main surface side of the lens. 3 is a lens mounting structure for frameless eyeglasses, into which the fastening member is inserted. The invention according to claim 5 is dependent on the invention of claim 1, wherein the second connection hole portion includes a through-hole penetrating the connection member, and the through-hole includes one side of the lens near the main surface. Or, a lens mounting structure for frameless eyeglasses into which a second fastening member is inserted from the other main surface side. The invention according to claim 6 is dependent on the invention according to any one of claims 1 to 5, wherein an end of the first fastening member is located on one principal surface side or the other principal surface side of the lens. A lens mounting structure for frameless eyeglasses, which is mounted so as not to partially protrude. The invention of claim 7 is dependent on the invention of any one of claims 1 to 5, wherein an end of the second fastening member is provided on one principal surface side and / or the other principal surface of the lens. A lens mounting structure for frameless eyeglasses, which is mounted so as not to partially protrude from a side. The invention of claim 8 is dependent on the invention of claim 1, wherein the second lens hole is opened from one principal surface side of the lens so as to communicate with the second connection hole. And a second fastening member inserted into the column-shaped bottomed hole. The invention according to claim 9 is according to any one of claims 1 to 8, wherein the connecting member is formed of a plastic material, and the first fastening member and the second fastening member are formed of a plastic material. This is a lens mounting structure for rimless spectacles formed of a plastic material or a metal material. A tenth aspect of the present invention is directed to the invention according to any one of the first to eighth aspects, wherein the connecting member, the first fastening member, and the second fastening member are formed of a metal material. And a lens mounting structure for frameless glasses. The invention according to claim 11 is dependent on the invention of claim 1, wherein the connecting member is formed of a metal material, and the lens, the first fastening member, and the second fastening member are formed of a plastic material, The first fastening member and / or the second fastening member are disposed between the lens and the connecting member when the first fastening member and the second fastening member are inserted into the lens and the connecting member. A lens mounting structure for frameless eyeglasses, including a reinforcing member formed of a metal material having the following. The invention of claim 12 is dependent on the invention of claim 1, wherein the first fastening member and the second fastening member are small screws such as slotted round screws and cross-hole round screws. Screws or bolts such as hexagon bolts, square bolts, hexagon socket head bolts, stud bolts, or set screws such as slotted set screws, etc. This is a lens mounting structure for frameless eyeglasses made of a metal material. The present invention according to claim 13 provides a plastic lens, a circular first lens hole penetrating from one principal surface side of the lens to the other principal surface side of the lens near the edge of the lens, A second lens hole having a bottomed circular shape, which is disposed at an interval from the first lens hole and is opened from one principal surface side of the lens, and a lens disposed on one principal surface side of the lens and has a lens. A first connecting member inserted into the first lens hole portion and having a threaded portion on an inner peripheral surface thereof, the first connecting portion having a bottom portion and a metal connecting member for connecting to the wisdom and / or the bridge; A cylindrical locking body having a hole, and a circular second connection hole communicating with the second lens hole and penetrating the connection member. The other main surface side is inserted into the first lens hole and the first connection hole, and the first connection hole is inserted into the outer periphery thereof. A first fastening member such as a small metal screw, a bolt and a set screw having a threaded portion that can be screwed into the threaded portion of the lens, a second connection hole from the one main surface side of the lens, and a second fastening hole. An edge which is inserted into the lens hole and connected and fixed by a second fastening member such as a small metal screw, a bolt and a set screw having a shaft diameter larger than the hole diameter of the second connection hole. This is the lens mounting structure of the spectacles without. The invention according to claim 14 provides a plastic lens, a circular first lens hole penetrating from one principal surface side of the lens to the other principal surface side of the lens near the edge of the lens, A circular second lens hole disposed at a distance from the first lens hole and penetrating from the one main surface of the lens to the other main surface of the lens; and a second lens hole disposed on the one main surface of the lens. And a plastic connecting member for connecting the lens to the lens and / or the bridge, the connecting member being inserted into the first lens hole and having a bottomed circular first connecting hole. The lens includes a cylindrical locking body and a bottomed circular second connection hole communicating with the second lens hole, and the lens and the connection member are connected to the first main surface of the lens from the other main surface side. It is inserted into the lens hole and the first connection hole, and is larger than the hole diameter of the first connection hole. A first fastening member such as a plastic small screw having a diameter, a bolt, and a set screw; and a second fastening hole inserted into the second lens hole and the second connection hole from the other main surface side of the lens. A lens mounting structure for frameless spectacles, which is connected and fixed by a plastic fastening screw having a shaft diameter larger than the diameter of the connection hole, such as a small screw made of plastic, a bolt, and a set screw. . The invention according to claim 15 is dependent on the invention according to claim 13, wherein the end of the second fastening member is an insertion-side edge of the second connection hole into which the second fastening member is inserted. This is a lens mounting structure for frameless eyeglasses that can be mounted so as not to partially protrude from it. The invention according to claim 16 is dependent on the invention of claim 14, wherein the end of the second fastening member is an insertion-side edge of the second lens hole into which the second fastening member is inserted. This is a lens mounting structure for frameless eyeglasses that is mounted so as not to partially protrude from the lens.

[Action]

 In the present invention according to claim 1, the shaft diameter of the first fastening member is formed to be larger than the hole diameter of the first lens hole and / or the first connection hole. Further, the shaft diameter of the second retaining member is formed to be larger than the hole diameters of the second lens hole and the second connection hole. Then, the first fastening member is inserted into the first lens hole and the first connection hole from one main surface or the other main surface of the lens, and the second lens hole and the second connection hole are inserted. The second fastening member is inserted into the second member. At this time, the first fastening member cuts in so as to increase the hole diameter of the first lens hole and / or the first connection hole, and the second fastening member engages in the second lens hole and the second lens hole. Engage so as to widen the diameter of the connection hole. Therefore, the lens and the connecting member are firmly connected and held by the first and second fastening members. Therefore, the lens can be more securely held and fixed without providing a contact piece that is in contact with the side edge of the lens as in the related art. In this case, the second fastening member has a function of preventing the connecting member and the lens from rotating together, and thereby preventing a loosening phenomenon between the lens and the connecting member. In the present invention according to claim 2, the locking body of the connecting member is inserted into the first lens hole, and the first fastening member is inserted into the first connecting hole which is a bottomed hole. At this time, the first fastening member cuts in so as to increase the diameter of the bottomed hole. Therefore, the lens and the connecting member are firmly connected and held. In the present invention according to claim 3, since the first connection hole includes a through hole, the first fastening member can be connected to the first lens from either the one main surface side or the other main surface side of the lens. It can be inserted into the hole and the first connection hole. At this time, the first fastening member cuts in so as to increase the diameter of the first lens hole and / or the first connection hole. Therefore, the lens and the connecting member are firmly connected and held. In the present invention according to claim 4, the second fastening member is inserted into the second connection hole which is the bottomed hole. At this time, the second fastening member cuts in so as to increase the hole diameter of the bottomed hole. Therefore, the lens and the connecting member are connected and held more firmly. In the present invention according to claim 5, since the second connection hole includes a through hole, the second fastening member can be connected to the second lens from either the one main surface side or the other main surface side of the lens. It can be inserted into the hole and the second connection hole. At this time, the second fastening member cuts in so as to increase the hole diameter of the second lens hole and / or the second connection hole. Therefore, the lens and the connecting member are connected and held more firmly. In the present invention according to claim 6, since the end of the first fastening member does not partially protrude from the one main surface side or the other main surface side of the lens, the one main surface side or the other main surface side of the lens is substantially Become flush. Therefore, the safety is excellent when the user is wearing glasses, and even when the lens surface is wiped with a cleaning cloth or the like, damage to the cleaning cloth or the like is prevented. In the present invention according to claim 7, since the end of the second fastening member does not partially protrude from the one main surface side and / or the other main surface side of the lens, the one main surface side and / or the other side of the lens. The main surface side is substantially flush. Therefore, the safety is excellent when the user is wearing glasses, and even when the lens surface is wiped with a cleaning cloth or the like, breakage of the cleaning cloth or the like is prevented. In the present invention according to claim 8, the second lens hole includes a bottomed hole, and the second retaining member includes a second connecting hole and a second lens hole from the other main surface side of the lens. Inserted into the part. At this time, the second fastening member bites in so as to increase the hole diameter of the second connection hole and the second lens hole. Therefore, the lens and the connecting member are connected and held more firmly. According to the present invention, when the connecting member, the first fastening member, and the second fastening member are formed of a plastic material, the lens, the connecting member, and the first fastening member and the second fastening member are used. When the first and second connection holes are connected and fixed, the adhesion between the first and second connection holes and the first and second fastening members is further increased, respectively. According to the invention of the ninth aspect, when the connecting member is formed of a plastic material and the first and second fastening members are formed of a metal material, the first and second fastening members are formed. When the lens and the connecting member are connected and fixed by the member, the first fastening member and the second fastening member easily bite into the first connecting hole and the second connecting hole, respectively. Therefore, the lens and the connecting member are connected and held more firmly. In the present invention according to claim 10, since the connecting member, the first fastening member and the second fastening member are formed of a metal material, the lens and the connecting member are formed by the first fastening member and the second fastening member. When the first and second connection holes are connected and fixed, the adhesion between the first and second connection holes and the first and second fastening members is further enhanced. According to the invention of claim 11, when the first fastening member and the second fastening member are inserted into the lens and the connecting member, the first fastening member and / or the second fastening member are built in the first fastening member and / or the second fastening member. Since the reinforcing member is located between the lens and the connecting member, it is possible to reinforce this portion having relatively low mechanical strength. In the present invention according to claim 12, since the first fastening member and the second fastening member include small screws, bolts and set screws having heads of various shapes, the lens and the connecting member are connected and connected. When fixed, they can be more effectively tightened to the lens and the connecting member. According to the invention of the thirteenth aspect, the first fastening member is inserted into the first connection hole of the connection member from the other main surface side of the lens via the first lens hole. Then, the lens and the connecting member are connected and fixed by screwing the screw part of the first fastening member and the screw part of the first connecting hole. The second fastening member is inserted into the second lens hole from one principal surface side of the lens via the second connection hole. Since the shaft diameter of the second fastening member is formed larger than the diameters of the second connection hole and the second lens hole, the second fastening member includes the second connection hole and the second lens. Engage so that the hole diameter of the lens hole is widened. In this case, since the connecting member, the first fastening member, and the second fastening member are each formed of a metal material, the adhesion between the first fastening member and the first connection hole, and the second fastening member, The adhesion between the retaining member and the second connection hole is improved. Therefore, the lens and the connecting member are firmly connected and held by the first and second fastening members. Therefore, the lens can be more securely held and fixed without providing a contact piece that is in contact with the side edge of the lens as in the related art. In this case, the second fastening member has a function of preventing the connection member and the lens from rotating together, and further preventing a loosening phenomenon between the lens and the connection member. According to the present invention, the first fastening member is inserted into the first connection hole of the connection member from the other main surface side of the lens via the first lens hole. Since the shaft diameter of the first fastening member is formed to be larger than the hole diameter of the first connection hole, the first retaining member cuts in so as to increase the hole diameter of the first connection hole. The second fastening member is inserted into the second connection hole from the other main surface side of the lens via the second lens hole. Since the shaft diameter of the second fastening member is formed larger than the hole diameters of the second lens hole and the second connection hole, the second fastening member includes the second lens hole and the second connection hole. Engage so as to increase the diameter of the connection hole. In this case, since the lens, the connecting member, the first fastening member, and the second fastening member are each formed of a plastic material, the adhesion between the lens and the first fastening member and the second fastening member, The adhesion between the first fastening member and the first connection hole and the adhesion between the second fastening member and the second connection hole are improved. Therefore, the lens and the connecting member are firmly connected and held by the first and second fastening members. Therefore, the lens can be more securely held and fixed without providing a contact piece that is in contact with the side edge of the lens as in the related art. In this case, the second fastening member has a function of preventing the connection member and the lens from rotating together, and further preventing a loosening phenomenon between the lens and the connection member. In the present invention according to claim 15, one end and the other end in the axial direction of the second fastening member are respectively provided on the insertion side edge of the second connection hole into which the second fastening member is inserted. It does not partially protrude from the other main surface side of the lens. Therefore, the number of portions protruding from the one main surface side and the other main surface side of the lens is reduced. Therefore, the safety is excellent when the user is wearing glasses, and even when the lens surface is wiped with a cleaning cloth or the like, damage to the cleaning cloth or the like is prevented. In the present invention according to claim 16, one end and the other end in the axial direction of the second fastening member are respectively the insertion side edge and the lens of the second lens hole into which the second fastening member is inserted. Does not partially protrude from the other main surface side. Therefore, the number of portions protruding from the one main surface side and the other main surface side of the lens is reduced. Therefore, the safety is excellent when the user is wearing glasses, and even when the lens surface is wiped with a cleaning cloth or the like, breakage of the cleaning cloth or the like is prevented. Furthermore, in the present invention according to Claims 1 to 16, the structure described above eliminates the need for a contact piece (common name: edge contact) as in the conventional example. Therefore, as long as the distance between the first lens hole and the second lens hole provided on the lens is set, the distance from the edge of the lens to the first lens hole is not affected. This makes it easy to drill holes in the lens hole and the second lens hole, and drill holes in the first and second connection holes in the connecting member. In addition, since the first lens hole, the second lens hole, the first connection hole, and the second connection hole are each circular, the drilling process itself is easy.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the drawings.

[0007]

[Embodiment of the invention] 【Example】

 FIG. 1 is an exploded perspective view showing a main part of an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of the embodiment shown in FIG. 1 as viewed from a plane side, and FIG. FIG. 3 is an exploded cross-sectional view of a main part of the embodiment shown in FIG. The lens mounting structure 10 of the frameless eyeglasses of the present embodiment includes a lens 12 having a predetermined orb shape. The lens 12 is formed of a plastic material. A first lens hole 14 having a circular shape in a front view is provided on the surface of the lens 12 near the edge thereof. The first lens hole 14 penetrates from the front side to the rear side of the lens 12. A second lens hole 16 having a bottomed circular shape in a front view is provided on the surface of the lens 12 at a predetermined distance from the first lens hole 14. In this embodiment, the thickness of the lens 12 is formed, for example, about 1.0 to 10.0 mm, the hole diameter of the first lens hole 14 is formed, for example, about 2.0 to 3.0 mm, The hole diameter of the lens hole 16 is formed to be, for example, about 0.9 to 1.2 mm. In the embodiment shown in FIGS. 1 to 3, for convenience, the surface of the lens 12 facing the eyeball side of the eyeglass user is defined as the rear surface side (the other main surface side) of the lens 12, and the opposite lens The surface 12 is the surface side (one main surface side) of the lens 12.

A connecting member 20 for connecting the lens 12 and the lens 18 is disposed on the front side of the lens 12. The connecting member 20 includes, for example, a base 22 having a horizontally long rectangular shape in a front view. The base 22 is disposed so as to be bent at a substantially right angle toward the lens 12 from the longitudinal end of the base 18. An intermediate portion in the length direction of the base 22 is provided with, for example, a cylindrical locking body 24 near the distal end portion 20a of the base 22. The locking body 24 is provided to extend toward the surface of the lens 12. The bottomed circular hole 26 of the locking body 24 has a function as a first connection hole (hereinafter, referred to as a first connection hole 26 in the embodiment shown in FIGS. 1 to 3). On the inner peripheral surface of the first lens hole 26, a screw portion 26a such as a female screw is provided.

Further, a second connection hole 28 having, for example, a circular shape is provided on a surface of the base 22 facing the front surface side of the lens 12 with a space from the locking body 26. The second connection hole 28 is provided so as to penetrate from one main surface of the base 22 to the other main surface. The distance between the hole center of the first connection hole 26 and the hole center of the second connection hole 28 is determined by the hole center of the first lens hole 14 and the hole of the second lens hole 16 described above. The distance from the center is formed substantially the same.

In the present embodiment, the outer diameter of the locking body 26 is formed to be, for example, about 2.4 mm, and the axial length of the locking body 26 is formed to be, for example, about 1.0 to 1.5 mm. Further, the hole diameter of the first connection hole 26 is formed, for example, about 1.0 to 1.2 mm, and the length of the first connection hole 26 is formed, for example, about 1.0 to 2.0 mm. . The hole diameter of the second connection hole 28 is formed, for example, at about 0.9 to 1.0 mm, and the length of the second connection hole 28 is formed, for example, at about 1.0 to 5.0 mm. Is done. Further, the connecting member 20 including the base 22 and the locking body 26 and the clasp 18 are integrally formed of, for example, a metal material.

The lens 12 and the connecting member 20 are connected and fixed by a first fastening member 30 and a second fastening member 36. That is, the first fastening member 30 has, for example, a cylindrical shaft portion 32. On the outer peripheral surface of the shaft portion 32, a screw portion 32a made of, for example, a male screw is provided. The outer diameter of the screw portion 32a is formed, for example, in the order of 1.0 to 2.0 mm, and the axial length of the shaft portion 32 is formed, for example, in the order of 1.5 to 10.0 mm. At one end of the shaft portion 32 in the axial direction, for example, a spherical crown-shaped head 34 larger than the shaft diameter of the shaft portion 32 is formed. The head 34 has, for example, a cross-shaped slot 34a. In the embodiment shown in FIGS. 1 to 3, for example, a cross-recessed round head screw made of a metal material is used as the first fastening member 30.

The second fastening member 36 has, for example, a cylindrical shaft portion 38. On the outer peripheral surface of the shaft portion 38, a screw portion 38a made of, for example, a male screw is provided. As the second fastening member 36, a set screw such as a slotted set screw or a hexagonal set screw can be used. The outer diameter of the screw portion 38a is formed, for example, at about 0.9 to 1.2 mm, and the axial length of the shaft portion 38 is formed, for example, at about 2.0 to 10.0 mm.

In the present embodiment, a connecting member 20 is arranged on the front side of the lens 12. In this case, the lens 12 and the connecting member are connected such that the first lens hole 14 and the first connecting hole 26 communicate with each other, and the second lens hole 16 and the second connecting hole 28 communicate with each other. 20 are arranged. Then, the shaft portion 32 of the first fastening member 30 is inserted into the first connection hole 26 of the connection member 20 from the rear surface side of the lens 12 via the first lens hole 14. In this embodiment, an annular washer 40 made of, for example, a metal material is provided between the back surface of the lens 12 and the head 34 of the first fastening member 30. At this time, the screw portion 32a of the first fastening member 30 and the screw portion 26a of the first connection hole 26 are screwed together, whereby the lens 12 and the connection member 20 are firmly connected and fixed.

Further, the second fastening member 36 is inserted into the second lens hole 16 from the surface side of the lens 12 via the second connection hole 28. Since the shaft diameter of the second fastening member 36 is formed larger than the hole diameters of the second connection hole 28 and the second lens hole 16, the second fastening member 36 has the second connection hole. It bites in so as to increase the hole diameter of the portion 28 and the second lens hole 16. In this case, since the connecting member 20, the first fastening member 30, and the second fastening member 36 are each formed of a metal material, the first fastening member 30 and the first connecting hole 26 are in close contact with each other. And the adhesion between the second fastening member 36 and the second connection hole 28 is improved.

Therefore, the lens 12 and the connecting member 20 are firmly connected and held by the first holding member 30 and the second holding member 36. Therefore, the lens 12 is more securely held and fixed without providing the contact piece 6 that is in contact with the side edge of the lens 12 as in the related art. In this case, the second fastening member 36 prevents the connecting member 20 and the lens 12 from rotating together or becoming uneven, and further prevents the loosening of the connecting portion between the lens 12 and the connecting member 20.

Further, in the embodiment shown in FIGS. 1 to 3, the one end and the other end in the axial direction of the second fastening member 36 are respectively different from those in the conventional example shown in FIGS. The second fastening member 36 does not partially protrude from the insertion side edge of the second connection hole 28 into which the second fastening member 36 is inserted and the back surface of the lens 12. Therefore, the number of portions protruding from the front side and the back side of the lens 12 is reduced. Therefore, the safety is excellent when the user is wearing glasses, and even when the lens surface is wiped with a cleaning cloth or the like, breakage of the cleaning cloth or the like is prevented.

In the embodiment shown in FIGS. 1 to 3, for example, when the first fastening member 30 is formed of a plastic material, a reinforcing member made of an elastic metal material is provided inside the shaft portion 32. (Not shown) may be provided. In this case, the reinforcing member is built in the shaft portion 32 by a method such as insert molding. The reinforcing member is provided between the first lens hole 14 of the lens 12 and the first connection hole 26 of the connection member 20 when the first fastening member 30 is inserted into the lens 12 and the connection member 20. It is arranged to straddle. Therefore, this portion where the mechanical strength is relatively weak can be reinforced by the reinforcing member. The reinforcing member having such a function can be similarly applied to, for example, the second fastening member 36. That is, when the second fastening member 36 is to be formed of a plastic material, a reinforcing member is similarly disposed in the shaft portion 38 of the second fastening member 36 to reinforce the second fastening member 36. I just need.

FIG. 4 is an exploded perspective view showing a main part of another embodiment of the present invention, and FIG. 5 is a schematic sectional view of the main part of the embodiment shown in FIG. FIG. 6 is an exploded cross-sectional view of a main part of the embodiment shown in FIG. The embodiment shown in FIGS. 4 to 6 differs from the embodiment shown in FIGS. 1 to 3 in particular in that the connecting member 20, the first fastening member 30 and the second fastening member 20 are formed of a plastic material. . Further, the second lens hole 16 is formed in a through hole penetrating the lens 12, and the second connection hole 28 is formed in a circular shape with a bottom. Further, the first connection hole 26 does not include the screw portion 26a on the inner peripheral surface thereof. In addition, the washer portion 40 is provided with, for example, an uneven portion 40a having a wavy cross section on one main surface and the other main surface thereof. Then, the second fastening member 36 is inserted into the second connection hole 28 via the second lens hole 16 from the rear surface side of the lens 12.

In the embodiment shown in FIGS. 4 to 6, the shaft diameter of the first fastening member 30 is formed to be larger than the hole diameter of the first connection hole 26, so that the first fastening member 30 , So that the hole diameter of the first connection hole 26 is increased. Similarly, the second fastening member 36 bites into the second lens hole 16 and the second connection hole 28 so as to increase the hole diameter. Further, since the connecting member 20, the first fastening member 30, and the second fastening member 20 are formed of a plastic material, the adhesion between the lens 12 and the first fastening member 30 and the second fastening member 36 is improved. Thus, the adhesion between the first fastening member 30 and the first connection hole 24 and the adhesion between the second fastening member 36 and the second connection hole 28 are improved.

Further, since the washer 40 having the uneven portion 40 a is disposed between the lens 12 and the first fastening member 30, the uneven portion 40 a on one main surface side is provided on the back surface of the lens 12. Dig into it. Therefore, the connecting member 20 and the lens 12 are further strongly connected and fixed.

The axial length of the second fastening member 36 is substantially the same as the sum of the length of the hole of the second lens hole 16 and the length of the hole of the second connection hole 28. Or, it is formed shorter than its size. Therefore, the axial end of the second fastening member 36 does not partially protrude from the rear surface of the lens 12. If the length of the second fastening member 36 in the axial direction is longer than the above-mentioned dimension, the axial end of the second fastening member 36 projects from the rear surface of the lens 12. May be appropriately cut by a cutting means such as a nipper.

FIG. 7 is an exploded sectional view showing a main part of still another embodiment of the present invention. The embodiment shown in FIG. 7 is different from the embodiment shown in FIGS. 4 to 6, for example, in particular, in particular, the first lens hole 14, the second lens hole 16 and the first connection hole 26, The arrangement of the two connection holes 28 is reversed. That is, in the embodiment shown in FIGS. 4 to 6, the second lens hole 16 is provided near the edge of the lens 12, but in the embodiment shown in FIG. 7, the first lens hole 16 is provided. A second lens hole 16 is disposed near the edge of the lens 12 and at a predetermined distance from the first lens hole 14. Further, the second connection hole 28 is a through hole that penetrates the base 22, and the second fastening member 36 is connected to the second lens through the second connection hole 28 from the front side of the lens 12. It is inserted into the hole 16. Further, the washer portion 40 does not include the uneven portion 40a. The second fastening member 36 can be inserted into the second lens hole 16 from the back side of the lens 12 through the second connection hole 28 as shown in FIG. 10, for example. Further, in this case, the second connection hole 28 is not limited to the through hole, and may be a circular hole with a bottom as shown in FIG. 12, for example.

As the second fastening member 36, a small screw 36 B such as a cross-recessed round machine screw or a bar member having no thread portion on the outer periphery is used instead of the set screw 36 A. Pins 36C such as pins and taper pins can be used. In the embodiment shown in FIG. 7, the shaft diameters of the second fastening members 36A, 36B, 36C are formed to be, for example, about 0.9 to 1.2 mm.

FIG. 8 is an exploded sectional view showing a main part of still another embodiment of the present invention. The embodiment shown in FIG. 8 differs from, for example, the embodiment shown in FIG. 7 in that a counterbore 42 is particularly provided in the second connection hole 28. In this case, the depth of the counterbore portion 42 is formed to be substantially the same as the height of the head 36b of the second fastening member 36 (round screw 36B with a cross hole). Therefore, in the embodiment shown in FIG. 8, when the second fastening member 36 (round screw 36B with a cross-shaped hole) is inserted into the second connection hole 28, its head 36b fits into the counterbore 42. It does not protrude from one main surface of the connecting member 20. Further, the second lens hole 16 may be a circular bottomed hole as shown in FIG. 9, for example.

FIG. 11 is an exploded sectional view showing a main part of still another embodiment of the present invention. The embodiment shown in FIG. 11 differs from, for example, the embodiment shown in FIG. 10 in that a counterbore 42 is provided in the second lens hole 16 in particular. In this case, the depth of the counterbore portion 42 is formed to be substantially the same as the height of the head portion 36b of the second fastening member 36 (cross-recessed round screw 36B). The second connection hole 28 is a circular bottomed hole opened from the back surface (the surface facing the lens 12) of the base 22, and includes a second fastening member 36 (a round head screw with a cross hole). 36B) is inserted from the back side of the lens 12. For this reason, in the embodiment shown in FIG. 11, when the second fastening member 36 (round screw 36B with a cross hole) is inserted into the second lens 16, the second fastening member 36 (round screw with a cross hole) is inserted. The head 36b of the dice 36B) is fitted into the spot facing portion 42 and does not protrude from the back surface of the lens 12. FIG. 13 is an illustrative view of a relevant part showing an example of the connecting member 20 applied to the embodiment of FIGS. FIG. 21 is an illustrative view of a relevant part showing another example of the connecting member of FIG.

FIG. 14 is an exploded cross-sectional view of a main part of still another embodiment of the present invention as viewed from the plane side. The embodiment shown in FIG. 14 is different from the embodiment shown in FIGS. 4 to 6, for example, in particular, in that the second connection hole 28 has a circular shape with a bottom, and the washer 40 has an uneven portion 40a. It has not been.

FIG. 15 is an exploded cross-sectional view of a main part of another embodiment of the present invention as viewed from the plane side. The embodiment shown in FIG. 15 is, in particular, a through-hole in which the second lens hole 16 penetrates the lens 12 as compared with the embodiment shown in FIGS. Further, the first connection hole 26 is a through hole that penetrates the base 22 and does not have the screw portion 26a. Further, as the second fastening member 36, not a set screw but a round small screw 36B with a cross hole is used. Then, the first fastening member 30 and the second fastening member 36 (round screw 36B with a cross hole) respectively connect the first connection hole 26 and the second connection hole 28 from the surface side of the lens 12. Through the first lens hole 14 and the second lens hole 16, respectively. In this case, the washer portions 40 are provided between the first retaining member 30 and the lens 12 and between the first retaining member 30 and the connecting member 20, respectively. The first fastening member 30 is fastened with a nut 42 made of, for example, a metal material or a plastic material. The second lens hole 16 may be a circular hole with a bottom as shown in FIG. 16, for example, and the second fastening member 36 may be, for example, a flat-tip slotted type. The set screw 36A and the parallel pin 36C, and other set screws and small screws may be appropriately applied.

FIG. 17 is an exploded cross-sectional view of a main part of still another embodiment of the present invention as viewed from the plane side. The embodiment shown in FIG. 17 is different from the embodiment shown in FIG. 15 in that, in particular, the second fastening member 36 is formed of a plastic material, and the reinforcing member 44 is disposed inside the second fastening member 36. The reinforcing member 44 is formed of a metal material having elasticity, and is built in the shaft portion of the second fastening member 36 by, for example, insert molding. When the second fastening member 36 is inserted into the connecting member 20 and the lens 12, the reinforcing member 44 is located between the second connecting hole 28 of the connecting member 20 and the second lens hole 16 of the lens 12. It is arranged to straddle. Therefore, this portion where the mechanical strength becomes relatively weak can be reinforced by the reinforcing member 44. The reinforcing member 44 having such a function can be similarly applied to, for example, the first fastening member 30. That is, when it is desired to form the first fastening member 30 from a plastic material, similarly, the reinforcing member 44 is disposed in the shaft portion 32 of the first fastening member 30 and the first fastening member 30 is provided. Should be reinforced.

FIG. 18 is an exploded view of an essential part showing an example of a connecting member applied to the embodiment of FIGS. The connecting member 20 includes, for example, a rectangular base 22, and an annular portion 46 having a first connecting hole 26 is provided at the tip of the base 22. The outer diameter of the annular portion 46 is formed larger than the width of the base 22. The base 22 is provided with a second connection hole 28 at a root thereof at a predetermined distance from the first connection hole 26. The connecting member 20 includes a rectangular base 22 having a width substantially equal to the outer diameter of the annular portion 46, as shown in FIG. The first connection hole 26 and the second connection hole 28 may be provided.

FIG. 20 is an exploded sectional view of a main part of still another embodiment of the present invention as viewed from the plane side. The embodiment shown in FIG. 20 is particularly different from the embodiment shown in FIG. 15, for example, in particular, the first lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole. The arrangement of the part 28 is reversed. That is, in the embodiment shown in FIG. 15, the second lens hole 16 is disposed near the edge of the lens 12, but in the embodiment shown in FIG. A second lens hole 16 is provided near the edge and at a predetermined distance from the first lens hole 14. Further, as the second fastening member 36, a set screw such as a slotted set screw 36A can be appropriately applied in addition to the round head screw 36B with a cross hole.

FIG. 22 is a partially cutaway schematic view of a main part of a modification of the embodiment shown in FIG. 17, as viewed from the plane, and FIG. 23 is an exploded sectional view thereof. The embodiment shown in FIGS. 22 and 23 is different from the embodiment of FIG. 17 particularly in the shape of the member provided with the reinforcing member and the shape of the reinforcing member itself. A screw portion 14a such as a female screw is provided on the inner peripheral surface. In the embodiment of FIG. 17, the reinforcing member 44 is built in the shaft of the second fastening member 36, but in the embodiment shown in FIGS. 22 and 23, the reinforcing member 48 is provided on the first fastening member 30. Is done. Further, the embodiment shown in FIGS. 22 and 23 does not include the washer 40 and the nut 42 as in the embodiment shown in FIG.

That is, the first fastening member 30 shown in this modification includes, for example, a cylindrical shaft portion 32 made of a plastic material. A reinforcing member 48 made of a metal material is integrally formed on the shaft portion 32 by a method such as insert molding. The reinforcing member 48 includes, for example, a cylindrical shaft portion 50. A head portion 52 is formed at one axial end of the shaft portion 50, and the head portion 52 has a slot 52a such as a cross hole. In addition, a screw portion such as a male screw may be provided on the outer peripheral surface of the shaft portion 50 as appropriate.

Further, in the present modified example, a slotted set screw made of, for example, a metal material or a plastic material is used as the second fastening member 36. The second lens hole 16 is provided, for example, in a bottomed cylindrical shape. In this modification, the shaft diameter of the shaft portion 32 of the first fastening member 30 is formed to be, for example, about 2.0 to 2.5 mm. The shaft diameter of the shaft portion 50 of the reinforcing member 48 is, for example, 1. The reinforcing member 48 has a head having an outer diameter of, for example, about 2.5 mm.

In the present modification, the first fastening member 30 and the second fastening member 36 (36A) are respectively provided with the first connection hole 26 and the second connection hole 28 from the surface side of the lens 12. Are inserted into the first lens hole 14 and the second lens hole 16 via the. In the present modification, the axial length of the shaft portion 32 of the first fastening member 30 is set to be longer than the thickness of the lens 12 and the thickness of the connecting member 20. Therefore, when the first fastening member 30 is set on the lens 12 and the connecting member 20, the axial end of the shaft portion 32 of the first fastening member 30 protrudes from the rear surface side of the lens 12. The protruding portion 33 is appropriately cut by cutting means such as a nipper.

In this modification, the shaft length of the shaft portion of the second fastening member 36 matches the hole length of the second connection hole 28 and the hole length of the second lens hole 16. Is set to approximately the same length as

Therefore, in the present modified example, there is no portion protruding from the rear surface side of the lens 12, and the rear surface side of the lens 12 is substantially flush. Therefore, the safety is excellent when the user is wearing glasses, and even when the lens surface is wiped with a cleaning cloth or the like, breakage of the cleaning cloth or the like is prevented.

Further, when the first fastening member 30 is inserted into the connecting member 20 and the lens 12, the reinforcing member 48 applied to this modification example has a first connecting hole 26 of the connecting member 20. And, it is disposed so as to straddle between the first lens holes 14 of the lens 12. Therefore, this portion where the mechanical strength becomes relatively weak can be reinforced by the reinforcing member 44 in terms of strength.

In each of the embodiments described above, the connection structure between the lens 12 of the frameless glasses and the lens 18 is exemplified. However, the lens mounting structure of the frameless glasses according to the present invention is the same as the lens structure of the frameless glasses. The connection structure between the bridge 12 and a bridge, for example, can be applied as appropriate.

In the lens mounting structure 10 for frameless spectacles according to the present invention, for example, a pin 36C such as a parallel pin or a tapered pin is applied to the second fastening member 36 as a rod member having no screw portion. When the second fastening member 36C is inserted into the second lens hole 16 and the second connection hole 28, an adhesive or the like is applied around the shaft of the second fastening member 36. May be inserted. In this case, the lens 12 and the connecting member 20 can be connected and held more firmly by the adhesive force of the adhesive.

Further, in the lens mounting structure 10 for frameless glasses according to the present invention, the first lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole 26 are provided. 28, such as the diameter of the hole and the length of the hole, or the distance between the center of the first lens hole 14 and the center of the second lens hole 16, or the first fastening portion The shaft diameter of the member 30 and the second fastening member 36, the outer diameter of the threaded portion, the size of the head, and the like can be appropriately changed depending on the shape and size of the lens 12, and are described in the above embodiments. However, the present invention is not limited to those exemplified above.

Also, whether or not to provide a screw portion in the inner peripheral portion of each of the first lens hole portion 14, the second lens hole portion 16, the first connection hole portion 26, and the second connection hole portion 28. Alternatively, whether or not to provide a screw portion on the shaft of the first fastening member 30 and the second fastening member 36 depends on whether the lens 12, the connecting member 20, the first fastening member 30 and the second fastening member are provided. 36 can be changed depending on the selection of a metal material, a plastic material, or another material, and is not limited to those exemplified in the above-described embodiments. Therefore, in the lens mounting structure 10 for frameless glasses according to the present invention, the first lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole 28 It is possible to provide a threaded portion in all of the holes, and various combinations of the number of holes provided with the threaded portion are also conceivable.

[0042]

[Effect of the invention]

 According to the invention of the present application, the field of view is not restricted when wearing glasses, the lens can be more securely held and fixed, and the safety is excellent, and the cleaning of the lens surface is hardly hindered. A lens mounting structure for frameless eyeglasses is obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is an illustrative sectional view showing a main part of the embodiment shown in FIG. 1 as viewed from a plane side.

FIG. 3 is an exploded cross-sectional view of a main part of the embodiment shown in FIG. 1 as viewed from a plane side.

FIG. 4 is an exploded perspective view showing a main part of another embodiment of the present invention.

5 is an illustrative sectional view showing a main part of the embodiment shown in FIG. 4 as viewed from a plane side.

FIG. 6 is an exploded sectional view of a main part of the embodiment shown in FIG. 4, as viewed from the plane side.

FIG. 7 is an exploded sectional view showing a main part of still another embodiment of the present invention.

FIG. 8 is an exploded sectional view showing a main part of still another embodiment of the present invention.

FIG. 9 is an exploded sectional view showing a main part of still another embodiment of the present invention.

FIG. 10 is an exploded sectional view showing a main part of still another embodiment of the present invention.

FIG. 11 is an exploded cross-sectional view showing a main part of still another embodiment of the present invention.

FIG. 12 is an exploded sectional view showing a main part of still another embodiment of the present invention.

FIG. 13 is an essential part illustrative view showing one example of a connecting member applied to the embodiment of FIGS. 7 to 12;

FIG. 14 is an exploded cross-sectional view of a main part of still another embodiment of the present invention as viewed from the plane side.

FIG. 15 is an exploded cross-sectional view of a main part of another embodiment of the present invention as viewed from the plane side.

FIG. 16 is an exploded cross-sectional view of a main part of still another embodiment of the present invention as viewed from the plane side.

FIG. 17 is an exploded cross-sectional view of a main part of still another embodiment of the present invention as viewed from a plane side.

FIG. 18 is an illustrative view of a relevant part showing an example of a connecting member applied to the embodiment of FIGS. 15 to 17;

FIG. 19 is an illustrative view of a relevant part showing another example of the connecting member applied to the embodiment of FIGS. 15 to 17;

FIG. 20 is an exploded cross-sectional view of a main part of still another embodiment of the present invention as viewed from the plane side.

FIG. 21 is an illustrative view of a relevant part showing another example of the connecting member shown in FIG. 13;

FIG. 22 is a partially cutaway cross-sectional view of a main part of a modification of the embodiment shown in FIG. 17, as viewed from the plane side.

FIG. 23 is an exploded cross-sectional view of the modification shown in FIG. 22.

FIG. 24 is an exploded perspective view showing a main part of a conventional lens mounting structure of frameless eyeglasses as a background of the present invention.

FIG. 25 is an illustrative sectional view showing a main part of the conventional example of FIG. 24 as viewed from the plane side.

[Explanation of symbols]

 Reference Signs List 10 Lens mounting structure for frameless glasses 12 Lens 14 First lens hole 16 Second lens hole 18 Ji 20 Connecting member 22 Base 24 Locking body 26 First connecting hole 26a First connecting hole 26a Screw part 28 Second connection hole part 30 First fastening member 32 Shaft part of first fastening member 32a Screw part of first fastening member 34 Head of first fastening member 34a Slotting parts 36, 36A, 36B, 36C Second fastening member 38 Shaft portion of second fastening member 38a Screw portion of second fastening member 40 Washer portion 40a Uneven portion 42 Nut 44, 48 Reinforcement member 46 Annular portion 50 Shaft portion 52 Head 52a Slot

Claims (16)

[Utility model registration claims] A first lens hole penetrating from one main surface of the lens to the other main surface of the lens in the vicinity of an edge of the lens; and a distance from the first lens hole. A second lens hole portion disposed on one main surface side of the lens, for connecting the lens to a wisdom and / or a bridge; a second lens hole portion disposed on the connection member; A first connection hole portion having a portion communicating with the lens hole portion of the second connection hole portion disposed on the connection member and having a portion communicating with the second lens hole portion; From the surface side or the other main surface side
A first fastening member inserted into the lens hole and the first connection hole, and having a shaft diameter larger than the hole diameter of the first lens hole and / or the first connection hole; and The lens is inserted into the second lens hole and the second connection hole from one main surface side or the other main surface side of the lens,
Including a second fastening member having a shaft diameter larger than the hole diameter of the second lens hole and the second connection hole, by the first fastening member and the second fastening member,
A lens mounting structure for frameless eyeglasses, wherein the lens and the connecting member are connected and fixed. 2. The connecting member includes a locking member having the first connecting hole, the first connecting hole is a bottomed hole, and the first fastening member is The lens mounting structure for frameless eyeglasses according to claim 1, wherein the lens is inserted into the bottomed hole from the other main surface side of the lens through the first lens hole. 3. The first fastening member has a threaded portion on an outer peripheral portion thereof, the first connection hole includes a through hole penetrating the connection member, and the through hole includes the through hole. The lens mounting structure for frameless eyeglasses according to claim 1, wherein the first fastening member is inserted from one main surface side or the other main surface side of the lens. 4. The second connection hole portion is a bottomed hole, and the second fastening member is inserted into the bottomed hole from the other main surface side of the lens. 2. The lens mounting structure of the frameless eyeglasses according to [1]. 5. The second connection hole portion includes a through hole that penetrates the connection member, and the through hole includes a second fastening member from one main surface side or the other main surface side of the lens. The lens mounting structure for frameless eyeglasses according to claim 1, wherein the lens is inserted. 6. The lens according to claim 1, wherein an end of the first fastening member is attached so as not to partially protrude from one main surface side or the other main surface side of the lens. 5. The lens mounting structure for frameless eyeglasses according to any one of 5. 7. The lens according to claim 1, wherein an end of the second fastening member is attached so as not to partially protrude from one main surface and / or the other main surface of the lens. A lens mounting structure for frameless eyeglasses according to claim 5. 8. The second lens hole includes a column-shaped bottomed hole opened from one main surface side of the lens so as to communicate with a second connection hole, and the column-shaped bottomed hole is provided. The lens mounting structure for frameless eyeglasses according to claim 1, wherein the second fastening member is inserted into the hole. 9. The connection member is formed of a plastic material, and the first fastening member and the second fastening member are formed of a plastic material or a metal material.
A lens mounting structure for the frameless spectacles according to claim 8. 10. The lens attachment for frameless eyeglasses according to claim 1, wherein the connecting member, the first fastening member, and the second fastening member are formed of a metal material. Construction. 11. The connecting member is formed of a metal material, the lens, the first fastening member, and the second fastening member are each formed of a plastic material, and the first fastening member and / or the first fastening member are formed of a plastic material. The second fastening member is disposed between the lens and the connecting member when the first fastening member and the second fastening member are inserted into the lens and the connecting member, and has elasticity. 2. The method according to claim 1, further comprising a reinforcing member formed of a material.
2. The lens mounting structure of the frameless eyeglasses according to [1]. 12. The first fastening member and the second fastening member may be machine screws such as slotted round screws, cross-recessed round screws, or hexagonal bolts, square bolts, and hexagonal bolts. Bolts such as studs, or
The lens mounting structure for frameless eyeglasses according to claim 1, further comprising a set screw such as a slotted set screw, wherein the small screw, the bolt, and the set screw are each formed of a plastic material or a metal material. 13. A lens made of plastic, a circular first lens hole penetrating from one main surface side of the lens to the other main surface side of the lens near an edge of the lens, and the first lens. A second lens hole having a bottomed circular shape, which is disposed at an interval from the hole and is opened from one principal surface side of the lens, and which is disposed on one principal surface side of the lens, Or a metal connection member for connecting to a bridge, wherein the connection member is inserted into the first lens hole, and has a bottomed first connection hole provided with a screw portion on an inner peripheral surface thereof. And a circular second connection hole communicating with the second lens hole and penetrating the connection member, wherein the lens and the connection member are formed of the lens. The first lens hole and the A first fastening member such as a small metal screw, a bolt, and a set screw which is inserted into the first connection hole and has a screw portion on the outer periphery thereof which can be screwed to the screw portion of the first connection hole. A small metal member having a shaft diameter larger than a hole diameter of the second connection hole portion, which is inserted into the second connection hole portion and the second lens hole portion from one main surface side of the lens. A lens mounting structure for frameless spectacles which is connected and fixed by a second fastening member such as a screw, a bolt, and a set screw. 14. A lens made of plastic, a first lens hole having a circular shape penetrating from one main surface side of the lens to the other main surface side of the lens near an edge of the lens, and the first lens. A second lens hole having a circular shape, which is disposed at an interval from the hole, penetrates from the one main surface side of the lens to the other main surface side of the lens, and is disposed on the one main surface side of the lens; A plastic connecting member for connecting the lens to a wisdom and / or a bridge, wherein the connecting member is inserted into the first lens hole, and has a bottomed circular first connecting hole; A cylindrical locking body, and a bottomed circular second connection hole communicating with the second lens hole, wherein the lens and the connection member are arranged from the other main surface side of the lens The first lens hole and the first connection hole A first fastening member such as a plastic small screw, a bolt and a set screw having a shaft diameter larger than the hole diameter of the first connection hole, and the second fastening member from the other main surface side of the lens. And a second fastener such as a plastic small screw, a bolt and a set screw, which is inserted into the second lens hole and the second connection hole and has a shaft diameter larger than the hole diameter of the second connection hole. A lens mounting structure for frameless eyeglasses that is connected and fixed by a member. 15. An end of the second fastening member is attached so as not to partially protrude from an insertion-side edge of the second connection hole into which the second fastening member is inserted. Item 14. A lens mounting structure for frameless eyeglasses according to Item 13. 16. An end of the second fastening member is attached so as not to partially protrude from an insertion edge of the second lens hole into which the second fastening member is inserted. Item 15. A lens mounting structure for frameless eyeglasses according to Item 14.