JP2002303827A - Lens mounting structure for rimless spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens mounting structure for rimless spectacles which does not limit the field of vision when a user wears the spectacles, can more securely hold and fix lenses, is excellent in safety and does not substantially hinder cleaning of lens faces. SOLUTION: A connecting member 20 for connecting the lens 2 to an endpiece and/or bridge is arranged on the front surface side of the lens 12. The connecting member 20 has a first connecting hole 26 communicating with a first lens hole 14 and a second connecting hole 28 communicating with a second lens hole 16. A fast fastening member 30 is inserted across the first lens hole 12 to the first connecting hole 26 from the rear surface side of the lens 12. Similarly, a second fast fastening member 36 is inserted across the second lens hole 28 to the second connecting hole 28. The first fastening member 30 and the second fastening member 36 respectively have shaft diameters greater than the hole diameters of the first connecting hole 26 and the second lens hole 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related 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. is there. The conventional lens mounting structure 1 for frameless glasses has
For example, it includes a plastic lens 2 having a circular through hole 2a. A lens stopper 3 is disposed 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 end in the longitudinal direction, and a contact piece 6 formed at the other end in the longitudinal direction. The contact piece 6 is in contact with the side edge 2b of the lens 2 and fixes the lens 2 so as not to move, and is connected to the lens 7 of the glasses. 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 disposed so as to correspond to the through hole 2a of the lens 2, and is fixed by a fixing means including a metal screw 8 and a nut 9, for example.

[0003]

However, in such a conventional lens mounting structure 1 for frameless eyeglasses, due to the mounting structure of the lens 2 and the lens 7, the stop piece 5 and the contact piece 6 of the lens stop member 3 are provided. The position of the through-hole 2a opened in the lens 2 is determined according to the interval therebetween. Therefore, in the conventional lens mounting structure 1 for frameless eyeglasses, if the position of the through hole 2a of the lens 2 deviates from a predetermined position for some reason, the lens stopper member 3 contacts the side edge 2b of the lens 2. It is difficult to firmly contact the contact piece 5 to stably fix the lens 2. That is, if the distance from the side edge of the lens 2 to the through hole 2a becomes longer than necessary, the contact piece 6 cannot be brought into contact with the side edge 2b of the lens 2, and conversely, the lens 2 from the side edge to the through hole 2a
If the distance to the lens 2 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 and the lens 7 cannot be connected well. Therefore,
When such a failure occurs, the through-hole 2a is re-opened in the lens 2 again, or the contact piece of the lens stopper 3 is made to correspond to the position of the through-hole 2a opened in the lens 2. It was necessary to change the arrangement of No. 6 and it was very troublesome. Furthermore, in the lens mounting structure 1 for frameless spectacles shown in this conventional example, since the contact piece 6 is formed on the lens stopper member 3, the range of view when the spectacles are worn 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 a loosening phenomenon occurs at the portion where the lens 2 and the lens stopper 3 are attached due to the rotation. There was probably a fear of doing so. 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 cloth or the like, there is a case where the cleaning cloth or the like is damaged by the angular projecting portion. 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, when an excessive tightening force is applied to the nut 9, a plastic lens is formed. 2 could be damaged.

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

[0005]

According to a first aspect of the present invention, there is provided a lens comprising: a lens; a first lens hole penetrating from one principal surface of the lens to the other principal surface of the lens near an edge of the lens; A second lens hole disposed at a distance from the first lens hole, and a connecting member disposed on one main surface side of the lens for connecting the lens to the lens and / or the bridge; A first connection hole provided in the connection member and having a portion communicating with the first lens hole, and a first connection hole provided in the connection member;
A second connection hole having a portion communicating with the second lens hole, and a second connection hole inserted into the first lens hole and the first connection hole from one main surface side or the other main surface side of the lens; A first fastening member having a shaft diameter larger than the hole diameter of the first lens hole and / or the first connection hole, a second lens hole from one main surface side or the other main surface side of the lens, and A second fastening hole inserted into the second connecting hole, the second fastening hole having a shaft diameter larger than the diameter of the second lens hole and the second connecting hole, and the first fastening member and the second fastening member. Is a lens mounting structure for frameless eyeglasses in which the lens and the connecting member are connected and fixed by the fixing member. The present invention according to claim 2 is dependent on the invention of claim 1, wherein the connecting member is
A first connecting hole portion having a bottomed hole, wherein the first fastening member has a first lens hole portion from the other main surface side of the lens; 3 is a lens mounting structure for frameless eyeglasses, which is inserted into a hole with a bottom through a hole. The present invention according to claim 3 is dependent on the invention of claim 1,
The first connection hole portion includes a through hole penetrating the connection member,
This is a lens mounting structure for frameless eyeglasses in which the first fastening member is inserted into the through hole from one main surface side or the other main surface side of the lens. The present invention according to claim 4 is based on claim 1.
The second connection hole portion is a bottomed hole, into which the second fastening member is inserted from the other main surface side of the lens. It is a lens mounting structure. The present invention according to claim 5 is dependent on the invention of claim 1, wherein the second connection hole portion includes a through hole that penetrates the connection member, and the through hole includes one main surface side of the lens or This is a lens mounting structure for frameless spectacles into which a second fastening member is inserted from the other main surface side. The present invention according to claim 6 is according to any one of claims 1 to 5, wherein an end of the first fastening member is partially formed from 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 protrude. The present invention according to claim 7 is based on claims 1 to
An end of the second fastening member is attached so as not to partially protrude from one principal surface side and / or the other principal surface side of the lens. This is a lens mounting structure for frameless glasses. The present invention according to 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. A lens mounting structure for frameless eyeglasses, including a column-shaped bottomed hole, into which the second fastening member is inserted.
The present 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: This is a lens mounting structure for frameless eyeglasses formed of a plastic material or a metal material. Claim 10
The present invention according to any one of claims 1 to 8, wherein the connecting member, the first fastening member, and the second fastening member are formed of a metal material, and the frameless glasses. Lens mounting structure. The present 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, and have elasticity. It is a lens mounting structure for frameless eyeglasses including a reinforcing member formed of a metal material having the same. Claim 12
The present invention according to claim 1 is dependent on the invention of claim 1, wherein the first fastening member and the second fastening member are machine screws such as a slotted round machine screw and a cross-recessed round machine screw, or Includes bolts such as hexagon bolts, square bolts, hexagon socket head bolts, stud bolts, or set screws such as slotted set screws. This is a lens mounting structure for frameless eyeglasses. The present invention according to claim 13 is a plastic lens,
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;
A second lens hole having a bottomed circular shape, which is disposed at an interval from the lens hole of the lens and is opened from the one main surface side of the lens; Including a metal connecting member for connecting to the bridge,
The connecting member is inserted into the first lens hole, and has a cylindrical locking member having a bottomed first connecting hole provided with a screw portion on the inner peripheral surface thereof, and a second lens hole. A second connecting hole having a circular shape penetrating the connecting member, the lens and the connecting member being inserted into the first lens hole and the first connecting hole from the other main surface side of the lens; A first fastening member such as a small metal screw, a bolt and a set screw having a threaded portion which can be screwed into the threaded portion of the first connection hole on the outer periphery thereof;
Small metal screws, bolts and setscrew inserted into the second connection hole and the second lens hole from one principal surface side of the lens and having a shaft diameter larger than the hole diameter of the second connection hole. And the like, and are connected and fixed by a second fastening member. According to a fourteenth aspect of the present invention, there is provided a lens made of plastic, a first lens hole having a circular shape 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 circular shape disposed at an interval from the lens hole of the lens and penetrating from one main surface side of the lens to the other main surface side of the lens; And / or a plastic connecting member for connecting the lens to the bridge and / or the bridge, wherein the connecting member is inserted into the first lens hole, and has a cylindrical shape with a bottomed circular first connecting hole. A locking member, and a bottomed circular second connection hole communicating with the second lens hole, wherein the lens and the connection member are connected to the first lens hole from the other main surface side of the lens. And a shaft diameter larger than the hole diameter of the first connection hole is inserted into the first connection hole. Plastic small screws, the first fastening member such as a bolt and set screw, the second from the other main surface side of the lens
And a second 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 second connection hole, which is inserted into the lens hole and the second connection hole. This is a lens mounting structure for frameless eyeglasses that are connected and fixed. A fifteenth aspect of the present invention is based on the thirteenth aspect, wherein an 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 is mounted so as not to partially protrude from the lens. The present invention according to claim 16 is dependent on the invention of claim 14, wherein an end of the second fastening member is an insertion-side edge of a 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.

According to the first aspect of the present invention, the shaft diameter of the first fastening member is formed larger than the hole diameter of the first lens hole and / or the first connection hole. Further, 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. Then, a first lens hole and a first lens hole are formed from one main surface or the other main surface of the lens.
The first fastening member is inserted into the connection hole of the second lens hole, and the second fastening member is inserted into the second lens hole and the second connection hole. 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 the second lens hole and the second lens hole.
Engage so as to widen the diameter of the connection hole. for that reason,
The first fastening member and the second fastening member firmly connect and hold the lens and the connecting member. 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 co-rotation of the connecting member and the lens, and thereby preventing a loosening phenomenon between the lens and the connecting member. In the present invention according to claim 2, the locking member 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
Of the fastening member cuts. Therefore, the lens and the connecting member are firmly connected and held. According to the third aspect of the present invention, since the first connection hole portion includes the through hole, the first fastening member can be connected to the first lens hole from either the one main surface side or the other main surface side of the lens. Portion 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 portion which is a bottomed hole. At this time, the second fastening member cuts in so as to widen 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 portion includes a through hole, the second fastening member can be connected to the second lens hole from either the one main surface side or the other main surface side of the lens. Portion 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 portion 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, breakage of 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 main surface side of the lens. The 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 fastening member is provided with a second connection hole and a second lens hole from the other main surface side of the lens. Is inserted into. At this time, the second fastening member cuts in so as to increase the hole diameters 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 ninth aspect of the present invention, when the connecting member, the first fastening member, and the second fastening member are formed of a plastic material, the first fastening member and the second fastening member are formed.
When the lens and the connecting member are connected and fixed by the fixing member, the adhesion between the first connecting hole and the second connecting hole and the first fixing member and the second fixing member, respectively, ,
It will be even higher. According to the ninth aspect of the present invention, when the connecting member is formed of a plastic material and the first fastening member and the second fastening member are formed of a metal material, the first fastening member and the second fastening member are formed. When the lens and the connecting member are connected and fixed by the member, the first fastening member and the second
Are easy to bite into the first connection hole and the second connection hole, respectively. Therefore, the lens and the connecting member are more strongly connected and held. Claim 1
According to the present invention, the connecting member, the first fastening member and the second fastening member are formed of a metal material.
When the lens and the connecting member are connected and fixed by the fixing member and the second fixing member, the first connecting hole and the second connecting hole, the first fixing member and the second fixing member, , Respectively, are further enhanced. According to the eleventh aspect of the present invention, when the first fastening member and the second fastening member are inserted into the lens and the connecting member, the reinforcement incorporated in the first fastening member and / or the second fastening member. Since the member is located between the lens and the connecting member, it is possible to reinforce this portion having relatively low mechanical strength. According to the twelfth aspect of the present invention, since the first fastening member and the second fastening member include machine screws, bolts, and set screws having heads of various shapes, the lens and the connecting member are connected and fixed. At times, they can be more effectively tightened to the lens and the connecting member. In the present invention according to claim 13, the first main surface side of the lens is connected to the first lens hole through the first lens hole.
Is inserted into the first connection hole of the connection member.
Then, by screwing the screw portion of the first fastening member and the screw portion of the first connection hole, the lens and the connection member are connected and fixed. The second fastening member is inserted into the second lens hole from the one main surface side of the lens via the second connection hole. Since the shaft diameter of the second fastening member is formed larger than the hole 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 as to widen the hole diameter of the lens hole. In this case, since the connection 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 holding 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 co-rotation of the connecting member and the lens, and thereby preventing a loosening phenomenon between the lens and the connecting member. In the present invention according to claim 14, 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 fastening member cuts in so as to increase the hole diameter of the first connection hole. Further, 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 has the second diameter.
Of the second lens hole and the second connection hole are cut into the hole so as to increase the hole diameter of the second lens hole and the second connection hole. In this case, since the lens, the connecting member, the first fastening member, and the second fastening member are formed of a plastic material, respectively, 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 holding 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 co-rotation of the connecting member and the lens, and thereby preventing a loosening phenomenon between the lens and the connecting 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 the insertion-side edge of the second connection hole into which the second fastening member is inserted and the lens. 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. In the present invention according to claim 16, one end and the other end in the axial direction of the second fastening member are provided.
Each does not partially protrude from the insertion side edge of the second lens hole into which the second fastening member is inserted and 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, breakage of the cleaning cloth or the like is prevented. Furthermore, in the present invention according to Claims 1 to 16, the above-described structure 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 in the lens is set, the first distance to the lens is not affected by the distance from the edge of the lens. Drilling of the lens hole and the second lens hole, and drilling of the first and second connection holes in the connecting member are simplified. Moreover, the first lens hole, the second lens hole, the first connection hole, and the second connection hole are respectively
Because of the circular shape, drilling itself is easy.

The above objects, 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]

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is an exploded perspective view showing a main part of an embodiment of the present invention, and FIG. 2 is a sectional view showing a main part of the embodiment shown in FIG. FIG. 2 is an exploded cross-sectional view of a main part of the embodiment shown in FIG. The lens mounting structure 10 for frameless spectacles according to 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. First
The 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, for example, 1.0 to 10.0 mm.
The first lens hole 14 has a hole diameter of, for example, about 2.0 to 3.0 mm, and the second lens hole 16 has a hole diameter of, for example, about 0.9 to 1.2 mm. It is formed. In the embodiment shown in FIGS. 1 to 3, for convenience,
The surface of the lens 12 facing the eyeball side of the spectacle user is the back surface of the lens 12 (the other main surface side), and the surface of the lens 12 on the opposite side is the front surface side of the lens 12 (one main surface side). .

On the front side of the lens 12, a connecting member 20 for connecting the lens 12 and the lens 18 is arranged. The connecting member 20 includes, for example, a base 22 having a horizontally long rectangular shape in a front view.
including. The base 22 extends from the end in the length direction of the wi 18
It is disposed to be bent at a substantially right angle to the lens 12 side. Base 2
In the middle part in the longitudinal direction of the base 2, the tip part 20a of the base 22 is provided.
At the side, for example, a cylindrical locking body 24 is disposed.
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 the surface of the base 22 facing the surface of the lens 12 at a distance from the locking member 26. This second
The connection hole 28 is provided so as to penetrate from one main surface to the other main surface of the base 22. 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, for example, 1.0 to 1.0.
The first connection hole 26 is formed to have a length of, for example, about 1.0 to 2.0 mm. The hole diameter of the second connection hole 28 is, for example, 0.9 to 1.0 m.
m, and the length of the second connection hole 28 is, for example, about 1.0 to 5.0 mm. Further, the connecting member 20 including the base 22 and the locking body 26 and the
Is 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, for example, about 1.0 to 2.0 mm, and the axial length of the shaft portion 32 is, for example, 1.5 mm.
It is formed to about 10.0 mm. At one end in the axial direction of the shaft portion 32, for example, a 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. Screw part 38
The outer diameter of “a” is, for example, about 0.9 to 1.2 mm, and the axial length of the shaft portion 38 is, for example, 2.0 to 1 mm.
It is formed to about 0.0 mm.

In this embodiment, a connecting member 20 is disposed on the front side of the lens 12. In this case, the first lens hole 1
The lens 12 and the connecting member 20 are arranged such that the first and second connection holes 26 communicate with each other, and the second lens hole 16 and the second connection hole 28 communicate with each other. And lens 1
2 through the first lens hole 14 from the back side of
Of the fastening member 30 is inserted into the first connection hole 26 of the connection member 20. In this embodiment, an annular washer 40 made of, for example, a metal material is provided between the rear 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 connected to the lens 1.
2 is inserted into the second lens hole 16 through the second connection hole 28 from the front side. 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 is formed.
Cuts into the second connection hole 28 and the second lens hole 16 so as to increase the hole diameter. In this case, the connecting member 2
0, the first fastening member 30 and the second fastening member 36
Since each is made of a metal material, the adhesion between the first fastening member 30 and the first connection hole 26 and the adhesion between the second fastening member 36 and the second connection hole 28 are improved. Increase.

Therefore, the first fastening member 30 and the second
The lens 12 and the connecting member 20 are firmly connected and held by the retaining member 36. Therefore, the lens 12 is more reliably 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 a loosening phenomenon of a connecting portion between the lens 12 and the connecting member 20.

Further, in the embodiment shown in FIGS. 1 to 3, the second fastening member 3 is different from the conventional example shown in FIGS.
The one end and the other end in the axial direction of 6 do 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 side of the lens 12, respectively. 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 formed by a method such as insert molding.
It is built into the shaft part 32. The reinforcing member is a first fastening member 3
When 0 is inserted into the lens 12 and the connecting member 20, it is disposed so as to straddle between the first lens hole 14 of the lens 12 and the first connecting hole 26 of the connecting member 20.
Therefore, this portion where the mechanical strength becomes relatively weak can be reinforced by the reinforcing member. In addition,
The reinforcing member having such a function can be similarly applied to the second fastening member 36, for example. That is, when it is desired to form the second fastening member 36 from a plastic material, similarly, a reinforcing member is provided in the shaft portion 38 of the second fastening member 36 to reinforce the second fastening member 36. Good.

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 a main part of the embodiment shown in FIG. FIG. 5 is an exploded cross-sectional view of a main part of the embodiment shown in FIG. FIG.
In the embodiment shown in FIGS. 6 to 6, the connecting member 20, the first fastening member 30, and the second fastening member 20 are formed of a plastic material, in particular, as compared with the embodiment shown in FIGS. 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 bottomed circular shape. Further, the first connection hole 26 does not include the screw portion 26a on the inner peripheral surface thereof. The washer 40
Is provided with, for example, an uneven portion 40a having a wavy cross section on one main surface and the other main surface. The second fastening member 36 is provided on the second lens hole 16 from the back side of the lens 12.
Through the second connection hole 28.

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. The first connection hole 26 is bitten so as to widen the hole diameter. Similarly, the second
Of the second lens hole 16 and the second connection hole 28 are digged in so as to widen 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 lens 12
Between the first fastening member 30 and the second fastening member 36, the tightness between the first fastening member 30 and the first connecting hole 24, and the second fastening member 36 and the second fastening member 36. Connection hole 2
8 is improved.

Further, the lens 12 and the first fastening member 30
The washer portion 40 having the uneven portion 40a is disposed between them, so that the uneven portion 40a on one main surface side cuts into the back surface of the lens 12. Therefore, the connecting member 20 and the lens 12
Is more strongly connected and fixed.

The axial length of the second retaining member 36 is substantially the same as the sum of the length of the second lens hole 16 and the length 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 back surface of the lens 12. When the length of the second fastening member 36 in the axial direction is longer than the above-described dimension, the axial end of the second fastening member 36 projects from the rear surface of the lens 12. You may make it cut | disconnect suitably by 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.
For example, as compared with the embodiment shown in FIGS.
The arrangement of the lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole 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. The first lens hole 14 is disposed near the edge of the lens 12.
The second lens hole 16 is arranged at a predetermined interval. Further, the second connection hole 28 is a through hole that penetrates the base 22, and the second fastening member 36
2 is inserted into the second lens hole 16 through the second connection hole 28 from the front side. 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 through the second connection hole 28 from the rear surface side of the lens 12, as shown in FIG. 10, for example. In this case, the second connection hole 28 is not limited to a through hole, and may be a bottomed circular hole as shown in FIG. 12, for example.

As the second fastening member 36, instead of the set screw 36A, a small screw 3 such as a round screw with a cross hole is used.
6B or a pin 36C such as a parallel pin or a tapered pin as a rod member having no threaded portion on the outer peripheral portion can be used. In the embodiment shown in FIG.
Of the retaining members 36A, 36B, 36C are formed to have a diameter of, 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.
For example, as compared with the embodiment shown in FIG. 7, in particular, a counterbore portion 42 is additionally provided in the second connection hole portion 28. 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 (round screw 36B with a cross hole). For this reason, 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, the head 36b of the second fastening member 36
2 and 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 the embodiment shown in FIG.
A counterbore portion 42 is attached to the lens hole portion 16. In this case, the depth of the counterbore portion 42 is
It is formed to be approximately the same height as the head 36b of the (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 FIG. 36B) is fitted into the counterbore portion 42 and does not protrude from the back surface of the lens 12. FIG. 13 is an illustrative view showing main parts of an example of a connecting member 20 applied to the embodiment of FIGS. FIG.
FIG. 14 is an illustrative view showing main parts of another example of the connecting member of FIG. 13;

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 particularly different from the embodiment shown in FIGS. 4 to 6, in particular, in that the second connection hole 28 has a circular shape with a bottom.
The washer portion 40 is not provided with the uneven portion 40a.

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 a through-hole in which the second lens hole 16 penetrates through the lens 12, as compared with the embodiment shown in FIGS. 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 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 respectively.
And inserted into the second lens hole 16. in this case,
Between the first fastening member 30 and the lens 12;
Between the fastening member 30 and the connecting member 20 of
A washer 40 is provided. Also, the first fastening member 30
Is fastened by a nut 42 made of, for example, a metal material or a plastic material. The second lens hole 1
For example, as shown in FIG. 16, 6 may be a circular hole with a bottom, and as the second fastening member 36, for example, a flat-tip type slotted set screw 36 A and a parallel pin 36 C, Other set screws and machine screws can be applied as appropriate.

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 differs 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. Reinforcement member 44
Is formed of a metal material having elasticity, and is built in the shaft of the second fastening member 36 by, for example, insert molding. The reinforcing member 44 is such that the second fastening member 36 is connected to the connecting member 2.
0 and when inserted into the lens 12,
And the second connection hole 28 of the lens 12 and the second lens hole 16 of the lens 12. Therefore, this portion where the mechanical strength is 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 the first fastening member 30 is to be formed of a plastic material, the reinforcing member 44 is similarly provided in the shaft portion 32 of the first fastening member 30.
May be provided to reinforce the first fastening member 30.

FIG. 18 is an illustrative view of a relevant 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. In the base 22,
A second connection hole 28 is provided on the base side at a predetermined distance from the first connection hole 26. Also, the connecting member 20
As shown in FIG. 19, for example, the first connecting portion 22 includes a rectangular base 22 having a width substantially the same as the outer diameter of the annular portion 46, and is separated from the first connecting portion at a predetermined interval in the longitudinal direction of the base 22. The hole 26 and the second connection hole 28 may be provided.

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. The embodiment shown in FIG. 20 is different from the embodiment shown in FIG.
In particular, the arrangement of the first lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole 28 is reversed. That is, in the embodiment shown in FIG.
Although the second lens hole 16 is arranged near the edge of the lens 12, in the embodiment shown in FIG.
4 is disposed near the edge of the lens 12, and a second lens hole 16 is disposed at a predetermined distance from the first lens hole 14. As the second fastening member 36, in addition to the round head screw 36B having a cross hole, a set screw 3 having a slot is used.
A set screw such as 6A may be applied as appropriate.

FIG. 22 is a partially cutaway sectional view of a principal part of a modification of the embodiment shown in FIG.
3 is an exploded cross-sectional view. The embodiment shown in FIGS. 22 and 23 differs from the embodiment of FIG. 17 in particular 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,
In the embodiment shown in FIG. 22 and FIG.
Is provided with a reinforcing member 48. Further, FIGS.
In the embodiment shown in FIG. 17, a washer 40 as in the embodiment of FIG.
And the nut 42 and the like are not provided.

That is, the first fastening member 30 shown in the present 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. 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 this modification, the second fastening member 3
For example, a slotted set screw made of a metal material or a plastic material is used as 6. Also,
The second lens hole 16 is provided, for example, in a bottomed cylindrical shape. In this modification, the shaft 3 of the first fastening member 30
2 is formed to have a shaft diameter of, 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, 1.0 to
The reinforcing member 48 has a head with an outer diameter of, for example, about 2.5 mm.

In this modified example, the first fastening member 30 and the second fastening member 36 (36A)
2 is inserted into the first lens hole 14 and the second lens hole 16 via the first connection hole 26 and the second connection hole 28 from the front side. 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 total thickness of the lens 12 and 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 back side of the lens 12. The cut portion 33 is appropriately cut by cutting means such as a nipper.

In this modification, the second fastening member 36
Is set to substantially the same length as the combined length of the second connection hole 28 and the second lens hole 16.

Therefore, in this modification, there is no portion protruding from the rear surface of the lens 12, and the rear surface 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, the reinforcing member 4 applied to the present modification example
8 is such that when the first fastening member 30 is inserted into the connecting member 20 and the lens 12, the first fastening member 30 straddles between the first connecting hole 26 of the connecting member 20 and the first lens hole 14 of the lens 12. Will be arranged. Therefore, this portion where the mechanical strength is relatively weak can be reinforced by the reinforcing member 44.

In each of the above-described embodiments, the connection structure between the lens 12 of the frameless eyeglasses and the lens 18 is exemplified. And, for example, a connection structure with a bridge can be appropriately applied.

In the lens mounting structure 10 for frameless spectacles according to the present invention, a pin 36C such as a parallel pin or a taper pin is applied to the second fastening member 36, for example, as a rod member having no screw portion. In this case, the second fastening member 36C is connected to the second lens hole 16 and the second connection hole 2.
At the time of inserting the second fastening member 8, an adhesive or the like may be applied around the shaft portion of the second fastening member 36 to be inserted. In this case, the lens 12 and the connecting member 2
With 0, it is possible to further strongly connect and hold.

Further, in the lens mounting structure 10 for frameless spectacles according to the present invention, the first lens hole 14 and the second lens
Of the lens hole 16, the first connection hole 26, and the second connection hole 28, such as the diameter and length of the hole, or the center of the hole of the first lens hole 14 and the second hole. The distance between the lens hole 16 and the center of the hole, or the shaft diameter of the first fastening member 30 and the second fastening member 36, the outer diameter of the screw 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 not limited to those exemplified in the above-described embodiments.

Whether or not to provide a threaded portion in the inner peripheral portion of each of the first lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole 28 is determined. Or
Whether the threaded portion is provided on the shaft portion 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 36 are made of a metal material, a plastic material, or other material.
It can change depending on which one you choose,
The present invention is not limited to the above-described embodiments. Therefore, in the lens mounting structure 10 for frameless spectacles according to the present invention, the holes in the first lens hole 14, the second lens hole 16, the first connection hole 26, and the second connection hole 28 are formed. It is possible to provide a threaded portion for all the components, and various combinations of the number of holes provided with the threaded portion are also conceivable.

[0042]

According to the present invention, the field of view is not restricted when the spectacles are put on, and the lens can be more securely held and fixed. A lens mounting structure for frameless spectacles that hardly hinders cleaning 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 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 illustrating 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 illustrating a main part of another embodiment of the present invention as viewed from the plane side.

FIG. 16 is an exploded cross-sectional view illustrating 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 for frameless eyeglasses, which is 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 Connection member 22 Base 24 Locking body 26 First connection hole 26a First connection 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 Slotted 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)

[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 via 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 bottom and a circular shape, which is disposed at an interval from the hole and is opened from one main surface side of the lens, and is disposed on one main 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 front from the other main surface side of 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 eyeglasses, 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 portion, and the other main surface side of the lens; A second screw 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 connected and fixed by a fastening 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.