JP2592776B2 - Lens connection structure for frameless glasses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens connecting structure for frameless glasses for connecting a connecting portion of a bridge member or a connecting portion of a temple to a lens.

[0002]

2. Description of the Related Art In a frameless spectacle in which a bridge member is connected to an inner portion of a lens and a temple is connected to an outer portion of the lens, the connecting structure has conventionally been generally constructed as follows.

That is, as shown in FIGS. 28 to 29, a curved contact piece b which comes into contact with the lens peripheral surface a is soldered to the end of the connecting portion main body c, and protrudes inward of the lens and is located on the inner end side. A connecting piece e provided with an insertion hole d in a portion is brazed to the corresponding contact piece b. Then, the contact piece b is brought into contact with the lens peripheral surface a as required, the insertion hole d of the connection piece is aligned with the connection hole f of the lens, and the connection screw g is inserted into the insertion hole d and the connection hole f. The connecting portion is fixed to the lens by inserting and tightening a nut i to a screw shaft portion h projecting to the other surface side of the lens.

[0004]

As described above, in the conventional manufacturing process of the frameless eyeglasses, when forming the connecting portion of the bridge member or the connecting portion of the temple, a process of brazing a plurality of types of small parts in a predetermined manner. However, there is a problem in that the manufacturing process requires man-hours and the productivity is poor. Further, since the connecting portion is formed by brazing at a plurality of locations, there is a possibility that when the connecting portion is bent when adjusting the opening degree of the temple or the like, the solder may be separated or the brazed portion may be broken.

[0005] In addition, when the connecting portion is bent when adjusting the opening degree of the temple, if the bending is inappropriate, the lens peripheral surface is forcibly locally pressed by the contacting piece, and the lens is pressed against the portion. A large stress acts, which may cause chipping or cracking of the lens.

An object of the present invention is to provide a lens connecting structure for frameless eyeglasses which can solve such a problem.

[0007]

In order to solve the above problems, the present invention employs the following means. That is, the lens connection structure in the frameless glasses according to the present invention (hereinafter, referred to as a connection structure) is a lens connection structure in the frameless glasses in which the connection portion of the bridge member or the connection portion of the temple that connects the lenses is connected to the lens. . The connecting portion is provided with a screw insertion hole, and a rectangular cylindrical portion having the screw insertion hole penetrating along the axis is integrally formed with the connection portion by projecting the center of both screw insertion holes. The square tube portion is inserted closely into a square connection hole provided at the connection portion of the lens, and in this inserted state, the tip of the square tube portion is prevented from protruding from the connection hole. Insert a fixing screw into the screw insertion hole,
Further, a nut is screwed onto a screw shaft protruding toward the lens side or the connecting portion side and tightened to fix the connecting portion to the lens.

In addition to the connection structure according to the present invention, a screw hole is provided in the connection portion, and a rectangular tube portion having the screw insertion hole penetrating along the axis is connected to the center of both screw insertion holes. In addition, a rectangular tube made of resin is closely inserted into a rectangular connection hole provided at a connection portion of the lens, and a rectangular hole is formed in the rectangular connection hole provided at a connection portion of the lens. Parts are inserted closely, and in this inserted state, the tip of the rectangular tube is prevented from protruding from the connection hole. A fixing screw is inserted into the screw insertion hole of the connection and the rectangular tube, and the lens side or the connection A nut is screwed onto a screw shaft protruding to the side and tightened to fix the connecting portion to the lens.

In another connection structure of the present invention, a screw hole is provided in the connection portion, and a rectangular tube portion having the screw insertion hole penetrating along the axis is connected to the center of both screw insertion holes. The cylindrical portion made of a soft resin is closely inserted into the circular connecting hole provided at the connecting portion of the lens so as to form a circular hole. Press-fit portion, in this press-fitted state, so that the tip of the rectangular tube does not protrude from the connection hole, insert a fixing screw into the screw insertion hole of the connection portion and the rectangular tube, and insert it into the lens side or the connection portion side. A nut is screwed onto the projecting screw shaft and tightened to fix the connecting portion to the lens.

In another aspect of the connection structure according to the present invention, a stepped mounting hole is provided in the connecting portion by connecting an expansion opening extending through a step to the rectangular opening, and the mounting hole has a corner. The tubular member can be mounted, and the rectangular tubular member has an engagement flange portion protruding from an outer periphery of a base end of a rectangular tubular portion through which a screw insertion hole is provided along an axis line, the fitting flange portion being fittable to the extended opening. Then, the rectangular tube portion that is inserted closely into the rectangular opening portion through the extended opening portion is closely inserted into the rectangular connection hole provided at the connection portion of the lens, and in the inserted state, the ends of the rectangular tube portion are connected. So that it does not protrude from the hole, a fixing screw is inserted through the screw insertion hole, and a nut is screwed and tightened to a screw shaft protruding toward the lens side or the connecting portion side,
The connecting portion is fixed to the lens in a state where the engaging flange is fitted to the extended opening.

In another connection structure according to the present invention, a stepped mounting hole is provided in the connecting portion by connecting an expansion opening extending through a step to the rectangular opening, and the mounting hole has a corner. The tubular member can be mounted, and the rectangular tubular member has an engagement flange portion protruding from an outer periphery of a base end of a rectangular tubular portion through which a screw insertion hole is provided along an axis line, the fitting flange portion being fittable to the extended opening. The rectangular tube portion that is closely inserted into the rectangular opening portion through the extended opening portion is formed into a rectangular hole formed by closely inserting a resin-made rectangular tube body into the rectangular connection hole provided in the lens connecting portion. In the inserted state, the tip of the rectangular tube portion is prevented from protruding from the connection hole, a fixing screw is inserted through the screw insertion hole, and a nut is screwed into a screw shaft protruding toward the lens or the connection portion. The coupling portion is fixed to the lens in a state where the engagement flange portion is fitted with the expansion opening portion. Is shall.

In another connection structure according to the present invention, a stepped mounting hole is provided in the connecting portion by connecting an expansion opening extending through a step to the rectangular opening, and the mounting hole has a corner. The tubular member can be mounted, and the rectangular tubular member has an engagement flange portion protruding from an outer periphery of a base end of a rectangular tubular portion through which a screw insertion hole is provided along an axis line, the fitting flange portion being fittable to the extended opening. The rectangular tube portion that is closely inserted into the square opening through the extended opening is inserted into a circular hole formed by closely inserting a soft resin cylinder into the circular connection hole provided at the lens connection site. In the press-fitted state, the tip of the rectangular tube is prevented from protruding from the connection hole, a fixing screw is inserted into the screw insertion hole, and a nut is screwed into a screw shaft protruding toward the lens or the connection portion. And tighten up,
The connecting portion is fixed to the lens in a state where the engaging flange is fitted to the extended opening.

In another connection structure according to the present invention, a screw insertion hole is provided in the connection portion so that a square tube member can be mounted on the connection portion. The connecting portion abuts on a base end surface of a square tube portion having a matching screw insertion hole penetrating along the axis, and an engagement piece projecting from an edge of a base end of the square tube portion is connected to the connection portion. By engaging the smooth side surface of the portion in a contact state, the rectangular tube portion and the connecting portion are prevented from rotating and integrated with each other, and the rectangular tube portion is provided at the connecting portion of the lens. Into the connection hole of
In the inserted state, the tip of the rectangular tube portion is prevented from protruding from the connection hole, a fixing screw is inserted into the screw insertion hole of the connection portion and the rectangular tube portion, and the screw shaft protruding toward the lens side or the connection portion side. The nut is screwed and tightened to fix the connecting portion to the lens.

In another connection structure according to the present invention, a screw insertion hole is provided in the connection portion so that a square tube member can be mounted on the connection portion. The connecting portion abuts on a base end surface of a square tube portion having a matching screw insertion hole penetrating along the axis, and an engagement piece projecting from an edge of a base end of the square tube portion is connected to the connection portion. By engaging the smooth side surface of the portion in a contact state, the rectangular tube portion and the connecting portion are prevented from rotating and integrated with each other, and the rectangular tube portion is provided at the connecting portion of the lens. A resin square tube is closely inserted into the square hole formed by closely inserting the resin square tube into the connection hole, and in this inserted state, the tip of the square tube portion is prevented from protruding from the connection hole, and a fixing screw is inserted into the screw insertion hole. Through, and screw a nut onto a screw shaft protruding toward the lens side or the connecting part side and tighten it.
The connecting portion is fixed to the lens in a state where the engaging flange is fitted to the extended opening.

In another connection structure according to the present invention, a screw insertion hole is provided in the connection portion so that a square tube member can be mounted on the connection portion. The connecting portion abuts on a base end surface of a square tube portion having a matching screw insertion hole penetrating along the axis, and an engagement piece projecting from an edge of a base end of the square tube portion is connected to the connection portion. By engaging the smooth side surface of the portion in a contact state, the rectangular tube portion and the connecting portion are prevented from rotating and integrated with each other, and the rectangular tube portion is provided in a circular shape provided at the connecting portion of the lens. A cylindrical body made of a soft resin is closely inserted into the connection hole of the above and press-fitted into a circular hole formed so that the tip of the rectangular tube does not protrude from the connection hole in the press-fitted state. And a nut is screwed and tightened onto a screw shaft projecting toward the lens side or the connecting portion side, and the engagement flange portion is tightened. It is characterized in that fixed to the lens connection part in a state fitted to the extension apertures.

In each of the above connection structures, it is preferable that the tip portion of the rectangular tube portion is tapered so that the rectangular tube portion can be smoothly inserted into the connection hole, the square hole or the circular hole.

[0017]

In the connection structure according to the present invention, when the rectangular tube portion is integrally protruded from the connection portion, the connection portion and the rectangular tube portion are originally integrated. When the rectangular tube member is closely mounted in the rectangular mounting hole having the extended opening, the rectangular tube portion is prevented from coming off by fitting the engaging flange of the rectangular tube member into the extended opening. And is prevented from rotating, and is integrated with the connecting portion. Also, when a square tube member having an engagement piece protruding from the square tube portion is attached to the connection portion, the engagement piece is engaged with the smooth side surface of the connection portion in a contact state, so that the square tube portion is The connecting portions are prevented from rotating and integrated.

However, the structure according to the present invention is such that the rectangular tube portion is inserted into a rectangular connection hole provided in the lens, or the rectangular tube portion is inserted into a rectangular hole formed by a rectangular tube attached to the lens. When is, since the square tube portion and the connecting portion are integrated as described above, a fixing screw is inserted through the square tube portion,
By screwing a nut onto a screw shaft projecting to the lens side or the connecting portion side and tightening, the temple or bridge member is connected to the lens in a fixed state in which it is prevented from rotating.

When the connecting structure according to the present invention press-fits the rectangular tube into a circular hole formed by a soft resin cylindrical body mounted on a lens, the corner of the rectangular tube is circular. The inner peripheral surface of the hole is elastically bitten. At the bite portion, the outer peripheral surface of the cylindrical body is strongly pressed against the inner peripheral surface of the connection hole. Become Then, since the rectangular tube portion and the connecting portion are integrated as described above, a fixing screw is inserted through the rectangular tube portion, and a nut is screwed into a screw shaft projecting toward the lens side or the connecting portion side and tightened to tighten. The temple and the bridge member are connected to the lens in a fixed state in which rotation is prevented.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. [1] Embodiment in the case where the square tube portion is integrally protruded from the connecting portion The connecting structure 1 according to the present embodiment includes the connecting portion 3 of the temple 2 shown in FIG. 1 and the bridge member 5 shown in FIG. Connecting part 3 of
A square tube portion 6 (FIG. 3) integrally protruding from the connecting portion 3, a fixing screw 7 inserted through a screw insertion hole of the square tube portion, and a nut 9 (FIG. 3) screwed to the fixing screw 7 are used. To the lens 10. Hereinafter, as a representative of the connecting portion of temple 2,
The connection structure of the invention according to the present embodiment will be described.

First Embodiment At the connecting portion of the lens 10, a rectangular connecting hole 11 is provided as shown in FIG. A rectangular hole 13 is formed in the connecting hole 11 by inserting a flanged rectangular cylinder 12 made of resin from the front side of the lens more closely (FIG. 4). In addition, a screw insertion hole 15 is provided in the inner end portion of the connecting portion 3 of the temple 2, and a rectangular cylindrical portion 6 having a screw insertion hole 16 penetrating along the axis is formed. The connecting portions 3 are integrally formed with the holes so as to protrude. The point of protruding the square tube portion 6 is that the square tube body forming the square tube portion is formed integrally with the connecting portion by press molding or cutting, or the base end of the square tube body forming the square tube portion. The part is brazed to the connecting part. The protruding length of the rectangular tube portion is set such that the distal end 17 of the rectangular tube portion does not protrude from the connection hole 11 when the rectangular tube portion 6 is inserted into the rectangular hole 13 as described later. In order to facilitate insertion into the square hole 13, the rectangular tube 12 preferably has a tapered tip portion 19 as shown in FIG. 3.

As shown in FIG. 4, the square tube 6 is inserted into the square hole 13 more closely than the front side of the lens.
Then, the screw insertion holes 15, 16 of the connecting portion and the rectangular tube portion are formed.
When the fixing screw 7 is inserted from the front side of the lens and the nut 9 is screwed and tightened with the washer 22 interposed in the screw shaft portion 21 protruding to the rear side of the lens, the connecting portion 3 is fixed in a locked state. It will be connected to the lens 10.

In the connection structure, when the lens is made of a material that is difficult to break, a square tube may be directly inserted into the connection hole of the lens.

Second Embodiment FIGS. 5 and 6 show another embodiment of the connecting structure according to the present invention, wherein a circular connecting hole 11 is provided in the connecting portion of the lens 10. FIG. The connection hole 11 has a flanged cylindrical body 23 made of a soft synthetic resin made of a material such as nylon.
Is inserted more closely than the front side of the lens to form a circular hole 2
4 are formed (FIG. 6). Also, the connecting part 3 of the temple 2
A screw insertion hole 15 is provided in the inner end portion of the rectangular tube portion, and a square tube portion 6 having a screw insertion hole 16 penetrated along the axis is formed.
The two screw insertion holes 15 and 16 are formed so as to protrude integrally with the connecting portion 3 by aligning their centers. The point of protruding the square tube portion 6 is that the square tube body forming the square tube portion is formed integrally with the connecting portion by press molding or cutting, or the base end of the square tube body forming the square tube portion. The part is brazed to the connecting part. The protruding length of the rectangular tube portion is set so that the distal end 17 of the rectangular tube portion does not protrude from the connection hole 11 when the rectangular tube portion 6 is pressed into the circular hole 24 as described later. In order to facilitate press-fitting into the circular hole 24, the rectangular tube 6 preferably has a tapered tip portion 19 as shown in FIG.

As shown in FIGS. 6 and 7, the rectangular tube 6 is pressed into the circular hole 24 from the front side of the lens. As a result, the corner portion 25 of the rectangular tube portion 6 is elastically hardly inserted into the inner peripheral surface portion 26 of the circular hole, and the outer peripheral surface 27 of the cylindrical body is strongly pressed by the inner peripheral surface 29 of the connection hole. Then, the rectangular cylindrical portion 6 and the lens 10 are integrated by the frictional force caused by this. Since the rectangular tube 6 and the connecting portion 3 are integrated as described above, the fixing screws 7 are inserted into the screw insertion holes 15 and 16 of the connecting portion and the rectangular tube from the front side of the lens.
When the nut 9 is screwed and tightened with a washer 22 interposed between a screw shaft portion 21 protruding to the rear surface side of the lens and the nut 9, the connecting portion 2 is connected to the lens 10 in a fixed state in which it is prevented from rotating. Become.

[2] Embodiment in which the rectangular tube member is integrally mounted in a mounting hole provided in the connecting portion The connecting structure according to the present embodiment includes the connecting portion 3 of the temple 2 shown in FIG. The connecting portion 3 of the bridge member 5 shown in FIG.
The lens 10 is fixed to the lens 10 by using a rectangular tube member 30 integrally attached to the connecting portion 3, a fixing screw 7 inserted through a screw insertion hole of the rectangular tube member, and a nut 9 (FIG. 10) screwed into the fixing screw 7. It is something that connects. Hereinafter, the connection structure of the invention according to the present embodiment will be described as a representative of the connection portion of the temple 2.

First Embodiment A rectangular connection hole 11 is provided at the connection portion of the lens 10 as shown in FIG. A square hole 13 is formed in the connection hole 11 by inserting a resin-made flanged rectangular cylinder 12 more closely from the front side of the lens (FIG. 12).

At the inner end of the connecting portion 3 of the temple 2, there is provided a mounting hole 35 having an expansion opening 33 extending through a step 32 provided on the entrance side of the rectangular opening 31. Thus, the rectangular tube member 30 can be mounted in the mounting hole 35. The square tube member 30 has an engagement flange portion 39 which can be fitted to the extended opening 33 around the base end outer periphery of a square tube portion 37 having a screw insertion hole 36 penetrating along the axis. It becomes. The square tube member 30 has a square tube portion 37 whose expanded opening 3
3, the rectangular tube portion 37 is closely inserted into the rectangular opening portion 31, and the engagement flange portion 39 is fitted into the expansion opening portion 33, so that the rectangular tube portion 37 projects into the connecting portion 3. The protruding length of the rectangular tube portion is determined by inserting the rectangular tube portion 37 into the square hole 13 as described later.
In the state where it is inserted into the connection hole 1
Set so as not to protrude from 1. The square tube 37 is
In order to facilitate insertion into the square hole 13, the tip portion 42 is preferably tapered as shown in FIG.

However, as shown in FIG.
3, a square tube portion 37 closely inserted into the square opening portion 31
Is inserted closely into the square hole 13 from the front side of the lens, and the engagement flange 39 is fitted to the expansion opening 33. Then, the lens front surface is inserted into the screw insertion hole 36 of the square tube member 30. When the fixing screw 7 is inserted from the side and the nut 9 is screwed and tightened with the washer 22 interposed in the screw shaft portion 21 projecting to the rear surface side of the lens, the connecting portion 3 is fixed to the lens 10 in a fixed state in which it is prevented from rotating. Will be linked.

In the connection structure, when the lens is made of a material that is difficult to be broken, a rectangular tube may be directly inserted into the connection hole of the lens.

Second Embodiment FIGS. 13 and 14 show another embodiment of the connecting structure according to the present invention.
Is provided. The connection hole 11 has a flanged cylindrical body 2 made of a soft synthetic resin formed of a material such as nylon.
3 is inserted more closely from the front side of the lens to form a circular hole 24 (FIG. 14).

At the inner end of the connecting portion 3 of the temple 2, there is provided a mounting hole 35 having an expansion opening 33 extending through a step 32 provided on the entrance side of the square opening 31. Thus, the rectangular tube member 30 can be mounted in the mounting hole 35. The square tube member 30 has an engagement flange portion 39 which can be fitted to the extended opening 33 around the base end outer periphery of a square tube portion 37 having a screw insertion hole 36 penetrating along the axis. It becomes. The square tube member 30 has a square tube portion 37 whose expanded opening 3
3, which is closely inserted into the rectangular opening 31, and the engaging flange 39 is fitted to the expansion opening 33 to project into the connecting portion 3. The protruding length is set so that the distal end 41 of the rectangular tube portion does not protrude from the connection hole 11 when the rectangular tube portion 37 is pressed into the circular hole 24 as described later. In addition, in order to facilitate the insertion into the circular hole 24, the square tube portion 37 is preferably formed to have a tapered tip portion as shown in FIG.

However, as shown in FIG.
3, a square tube portion 37 closely inserted into the square opening portion 31
Is pressed into the circular hole 24 from the front side of the lens, and the engagement flange 39 is fitted to the expansion opening 33.
As a result, as shown in FIG.
5 elastically bites into the inner peripheral surface portion 26 of the circular hole, in which the outer peripheral surface 27 of the cylindrical body is strongly pressed by the inner peripheral surface 29 of the connection hole, and the frictional force caused by this causes the rectangular cylinder The unit 37 and the lens 10 are integrated. Since the rectangular tube 37 and the connecting portion 3 are integrated as described above, the fixing screw 7 is inserted from the front side of the lens into the screw insertion hole 36 of the rectangular tube member 30, and the screw protrudes toward the rear side of the lens. When the nut 9 is screwed into the shaft portion 21 with the washer 22 interposed therebetween and tightened, the connecting portion 3 is connected to the lens 10 in a fixed state in which it is prevented from rotating.

[3] An embodiment in which a rectangular tube member having an engaging portion protruding from the rectangular tube portion is mounted on the connecting portion. The connecting structure according to this embodiment is a temple 2 shown in FIG.
Of the bridge member 5 shown in FIG.
Is connected to the lens 10 using the square tube member 43 attached to the connection portion 3, the fixing screw 7 inserted through the screw insertion hole of the square tube member, and the nut 9 (FIG. 17) screwed to the fixing screw 7. Is what you do. Hereinafter, the connection structure of the invention according to the present embodiment will be described as a representative of the connection portion of the temple 2.

First Embodiment A rectangular connection hole 11 is provided in the connection portion of the lens 10 as shown in FIG. A rectangular hole 13 is formed in the connection hole 11 by inserting a flanged rectangular cylinder 12 made of resin from the front side of the lens more closely (FIG. 19).

A screw insertion hole 45 is provided at the inner end of the connecting portion in the form of a rectangular plate, and at the entrance side thereof, engaging recesses 47, 47 are vertically formed via steps 46, 46. Is formed. Then, the rectangular tube member 43 can be attached to the connecting portion 3. The square tube member 43 is provided with the screw insertion hole 4.
In the flat base end face 51 of the rectangular tube portion 50 in which a screw insertion hole 49 whose hole center coincides with the hole 5 is provided along the axis, the connection portion 3 is formed.
The rear surface 52 of the base portion of the base member abuts.
An engagement piece 53 protruding from the inner end edge of the square tube portion 50 can be engaged with the smooth side surface (inner end surface) 55 of the connecting portion 3 in a contact state. The rectangular tube part 50 and the connecting part 3 are prevented from rotating and integrated with each other.

The projecting length of the rectangular tube portion 50 is set so that the distal end 56 of the rectangular tube portion does not protrude from the connection hole 11 when the rectangular tube portion 50 is inserted into the rectangular hole 13 as described later. In order to facilitate insertion into the square hole 13, the rectangular tube 50 preferably has a tapered tip portion 57 as shown in FIG. 18.

As shown in FIG. 19, the rectangular tube portion 50 is inserted from the front side of the lens into the rectangular hole 13 with the engaging piece 53 facing inward, and then the connecting portion is The rear surface 52 is brought into contact with the base end surface 51 of the rectangular tube portion, and its side surface (inner end surface) 55 is brought into contact with the engaging piece 53 so that the screw insertion of the connecting portion and the rectangular tube portion is completed. Hole 4
The fixing screws 7 are inserted through 5, 49 from the front side of the lens. The upper and lower engaging recesses 47, 47
Engagement projections 59, 59 that can be fitted with the projection are provided. In a state where the engagement protrusion 59 is engaged with the engagement recess 47,
When the nut 9 is screwed and tightened with the washer 22 interposed between the screw shaft portion 21 protruding to the rear side of the lens, the connecting portion 3
The lens 10 is connected to the lens 10 in a fixed state in which rotation is prevented. Since the engagement projection 59 is engaged with the engagement recess 47, the fixing screw 7 is used when tightening the nut 9.
Is reliably prevented from rotating.

In the connection structure, engagement pieces are projected from upper and lower edges of the rectangular tube portion, and the engagement pieces can be engaged with the smooth upper and lower side surfaces of the connection portion in a contact state. You may comprise so that a square tube part and a connection part may be integrated in the mutually mutually stopped state.

When the lens is made of a material that is difficult to break, the square tube may be inserted directly into the connection hole of the lens.

Second Embodiment FIGS. 20 to 21 show another embodiment of the connection structure according to the present invention, in which a circular connection hole 11 is formed in a connection portion of a lens 10.
Is provided. The connection hole 11 has a flanged cylindrical body 2 made of a soft synthetic resin formed of a material such as nylon.
3 is inserted more closely from the front side of the lens to form a circular hole 24 (FIG. 21).

Further, a screw insertion hole 45 is provided at the inner end of the connecting portion in the form of a rectangular plate, and at the entrance side thereof, engaging recesses 47, 47 are provided vertically through steps 46, 46. Are formed. Then, the rectangular tube member 43 can be attached to the connecting portion 3. The square tube member 43 is provided on a flat base end surface 51 of a square tube portion 50 in which a screw insertion hole 49 whose hole center coincides with the screw insertion hole 45 is provided along the axis. The rear surface 52 of the portion is configured to abut. Further, an engagement piece 53 protruding from the inner end edge of the square tube portion 50 is
The flat portion 55 can be engaged with the smooth side surface (inner end surface) 55 of the connecting portion 3.
And the connecting portion 3 are prevented from rotating and integrated.

The projecting length of the rectangular tube portion 50 is set so that the distal end 56 of the rectangular tube portion does not protrude from the connection hole 11 when the rectangular tube portion 50 is inserted into the circular hole 24 as described later. In order to facilitate insertion into the square hole 13, the square tube 50 preferably has a tapered tip portion as shown in FIG. 18.

As shown in FIG. 21, the rectangular tube portion 50 is pressed into the circular hole 24 from the front side of the lens with the engaging pieces 53 facing inward. As a result, FIG.
As shown in the figure, the corner portion 25 of the rectangular tube portion 50 elastically bites into the inner peripheral surface portion 26 of the circular hole, and at the bite portion, the outer peripheral surface 27 of the cylindrical body strongly presses against the inner peripheral surface 29 of the connection hole. In this state, the rectangular tube portion 12 and the lens 10 are integrated by the frictional force caused by this. Thereafter, the rear surface 52 of the connecting portion is brought into contact with the base end surface 51 of the square tube portion, and the side surface (inner end surface) 55 is engaged with the engaging piece 53 in a state of contact. The fixing screw 7 is inserted from the front side of the lens into the screw insertion holes 45 and 49 of the section. The fixing screw 7
On the head, are formed engagement projections 59, 59 which can be fitted with the upper and lower engagement recesses 47, 47, respectively. The engagement projection 5
When the nut 9 is engaged with the engagement concave portion 47 and the nut 9 is screwed into the screw shaft portion 21 projecting to the rear surface side of the lens with the washer 22 interposed therebetween and tightened, the connection portion 3 is prevented from rotating. To be connected to the lens 10. Since the engagement projection 59 is in engagement with the engagement recess 47, the fixing screw 7 is preferably securely prevented from rotating when the nut 9 is tightened.

In the connection structure, engaging pieces are projected from upper and lower edges of the rectangular tube portion, and the engaging pieces can be engaged with the smooth upper and lower side surfaces of the connecting portion in a contact state. The cylindrical portion and the connecting portion may be integrated in a state where they are prevented from rotating.

(Other Embodiments) As will be described with reference to FIG. 22, as in the case where the square tube portion is integrally protruded from the connecting portion, in each of the above embodiments, the fixing screw 7 is provided on the rear side of the lens. May be more penetrated. In this case, the screw shaft 21 protruding toward the front surface of the lens
And tighten the nut 9.

In each of the above embodiments, a rectangular tube may be inserted into the connection hole provided in the lens from the rear side of the lens toward the front of the lens. An example in this case is
A description will be given with reference to FIG. 23 as a representative case where the square tube portion is integrally provided with the connecting portion. In the connecting portion of the lens 10,
A rectangular connection hole 11 is provided. A rectangular hole 13 is formed in the connection hole 11 by inserting a resin-made flanged cylindrical body 12 more closely from the rear surface side of the lens. In addition, a screw insertion hole 15 is provided in the inner end side portion of the connecting portion 3, and a rectangular cylindrical portion 6 having a screw insertion hole 16 penetrating along the axis is formed. In addition, they are integrally protruded from the connecting portion 3. The projecting length of the rectangular tube is set such that the distal end 17 of the rectangular tube does not protrude from the connection hole 11 when the rectangular tube 6 is inserted through the rectangular hole 13.
In order to facilitate insertion into the square hole 13, the square tube 6 preferably has a tapered tip portion 19 as shown in FIG. 5. However, the square tube portion 6 is inserted into the square hole 13 from the rear side of the lens closely, and then the fixing screw 7 is inserted from the lens rear surface side into the screw insertion holes 15 and 16 of the connecting portion and the square tube portion. When the nut 9 is screwed and tightened with the washer 22 interposed between the screw shaft portion 21 protruding to the rear surface side, the connecting portion 3 is fixed to the lens 10 in a locked state.
Will be connected.

In the connection structure according to the present invention, the square connection holes provided in the lens are not limited to the above-mentioned square ones, but may be formed into various kinds of square holes such as a hexagonal shape, a triangular shape, and a star shape. The rectangular tube portion and the rectangular tube member are formed so as to conform to the form.
Further, the square tube portion and the square tube member in the case where the cylindrical body is closely inserted into the circular connection hole provided in the lens are not limited to those having the rectangular parallelepiped tube shape. Further, it may be formed in various rectangular cylinder shapes such as a cylindrical shape having a star cross section.

FIG. 24 shows a mode in which a star-shaped connecting hole 11 is provided in the lens, and a rectangular tube 6 having a star-shaped cross section is projected from the connecting part 3. FIG. 25 shows a case where the square tube member 30 having the square tube portion 37 having a star-shaped cross section is mounted in the mounting hole 35 of the connecting portion. FIG. 26 shows a case where a rectangular tube member 43 having a rectangular tube portion 50 having a star-shaped cross section is mounted on the connecting portion 3 in a contact state. In these, the tip portion of the rectangular tube is preferably tapered as shown in FIGS. The connection structure using such a square tube portion and a square tube member is configured in the same manner as described with reference to FIGS. 4, 12, and 19, and the same portions as those in FIGS. I have.

Although not shown, a square tube portion and a square tube member inserted into a circular hole formed by inserting a cylindrical body into a circular hole of a lens can also be configured in the same manner as in FIGS.
FIG. 27 shows a case where the square tube portion 6 having a star-shaped cross section is pressed into the circular hole 24 of the cylindrical body 23 attached to the lens, and the corner portion 25 of the square tube portion 6 is formed inside the circular hole. Peripheral part 26
The outer peripheral surface 27 of the cylindrical body is strongly pressed by the inner peripheral surface 29 of the connection hole at the biting portion, and the frictional force caused by this causes the rectangular tube portion 6 and the lens 10 to be integrated. I have.

[0051]

According to the present invention, as described above, it takes time and effort to connect the connecting portion of the bridge member to the lens and the connecting portion of the temple to the lens in the frameless glasses. This eliminates the need for a brazing step requiring special brazing conditions. Therefore, not only can the production efficiency of the frameless glasses be improved, but also when the connecting portion is bent in order to adjust the opening degree of the temple, etc., the problems of the conventional solder separation and the breakage of the brazed portion are caused. There is no fear.

Further, since there is no contact piece that comes into contact with the peripheral surface of the lens, it is possible to solve the conventional problem that the lens is chipped or broken due to excessive pressing by the contact piece. Become. The elimination of the abutment piece also opens up a new direction in eyeglass design.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a temple is connected to a lens using a rectangular tube unit integrated with a connection unit.

FIG. 2 is a perspective view showing a state in which a bridge member is connected to a lens using a rectangular tube unit integrated with a connection unit.

FIG. 3 is an exploded perspective view illustrating a connection structure using a rectangular tube unit integrated with a connection unit.

FIG. 4 is a cross-sectional view illustrating the connection structure shown in FIG.

FIG. 5 is an exploded perspective view illustrating another embodiment of a connection structure using a rectangular tube portion integrated with a connection portion.

FIG. 6 is a cross-sectional view illustrating the connection structure shown in FIG.

FIG. 7 is a cross-sectional view illustrating a state where a rectangular tube portion is pressed into a circular hole of a lens.

FIG. 8 is a perspective view showing a state in which the temple is connected to the lens using a rectangular tube member that is mounted in the connecting portion in an inserted state.

FIG. 9 is a perspective view showing a state in which a bridge member is connected to a lens using a rectangular tube member that is attached to the connecting portion in a state of being inserted.

FIG. 10 is an exploded perspective view illustrating a connection structure using a rectangular tubular member mounted in a connection state in a connection portion.

FIG. 11 is a perspective view illustrating the rectangular tube member shown in FIG.

FIG. 12 is a cross-sectional view illustrating the connection structure shown in FIG.

FIG. 13 is an exploded perspective view for explaining another mode of the connection structure using the rectangular tubular member mounted in the connection portion in the inserted state.

FIG. 14 is a cross-sectional view illustrating the connection structure shown in FIG.

FIG. 15 is a perspective view showing a state in which a temple is connected to a lens by using a rectangular tube member having another configuration attached to a connecting portion in an engaged state.

FIG. 16 is a perspective view showing a state in which a bridge member is connected to a lens using a rectangular tube member having another configuration mounted in an engagement state with a connecting portion.

FIG. 17 is an exploded perspective view illustrating a connection structure using a rectangular tube member mounted on the connection portion in an engaged state.

FIG. 18 is a perspective view illustrating the rectangular tube member shown in FIG.

19 is a cross-sectional view illustrating the connection structure shown in FIG.

FIG. 20 is an exploded perspective view for explaining another mode of the connection structure using the rectangular tube member attached to the connection portion in an engaged state.

21 is a cross-sectional view illustrating the connection structure shown in FIG.

FIG. 22 is a cross-sectional view illustrating a connection structure in which a fixing screw is inserted from the rear side of the lens.

FIG. 23 is a cross-sectional view illustrating a state in which a connecting portion is applied to the rear surface side of the lens and the connecting portion is connected to the lens.

FIG. 24 is an exploded perspective view for explaining a connection structure in a case where a rectangular tube portion integrally projecting from the connection portion has a star-shaped cross section.

FIG. 25 is an exploded perspective view for explaining a connection structure in the case where a square tube portion mounted in a state of being inserted into the connection portion has a star-shaped cross section.

FIG. 26 is an exploded perspective view illustrating a connection structure in a case where a rectangular tube portion of a rectangular tube member mounted in an engagement state with the connection portion has a star-shaped cross section.

FIG. 27 is a cross-sectional view illustrating a state in which a rectangular tube having a star-shaped cross section is pressed into a circular hole of a lens.

FIG. 28 is a front view illustrating a conventional connection structure of a bridge member and a temple.

FIG. 29 is a cross-sectional view illustrating a conventional connection structure in which a temple is connected to a lens.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection structure 2 Temple 3 Connection part 5 Bridge member 6 Square cylinder part 7 Fixing screw 9 Nut 10 Lens 11 Connection hole 12 Square cylinder 13 Square hole 15 Screw insertion hole 16 Screw insertion hole 17 Tip of square cylinder part 19 Square cylinder part 23 Cylindrical body 24 Circular hole 30 Square cylinder member 31 Square opening 32 Step 33 Expansion opening 35 Mounting hole 36 Screw insertion hole 37 Square cylinder 39 Engagement flange 41 Tip of square cylinder 42 Tip portion 43 Square tube member 45 Screw insertion hole 46 Step 47 Engagement concave portion 49 Screw insertion hole 50 Square tube portion 51 Base end surface of square tube portion 53 Engagement piece 55 Smooth side surface of connection portion 56 Tip end of square tube portion 57 Angle Tip portion of cylindrical portion 59 Engagement protrusion

Claims (10)

(57) [Claims] 1. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple connecting lenses to a lens, wherein the connecting portion is provided with a screw insertion hole and an axis line. A rectangular tube portion having a screw insertion hole penetrating therethrough is formed integrally with the connection portion by aligning the centers of both screw insertion holes, and the rectangular tube portion is provided at a connection portion of the lens. Into the connection hole of the rectangular tube part, and in this insertion state, the tip of the rectangular tube portion is prevented from protruding from the connection hole. A lens connecting structure for frameless eyeglasses, wherein a nut is screwed into a screw shaft protruding toward a side or a connecting portion and tightened to fix the connecting portion to the lens. 2. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple for connecting lenses to a lens, wherein the connecting portion has a screw insertion hole and an axis. A square cylindrical part having a screw insertion hole penetrating along it, and projecting integrally with the connection part by aligning the centers of both screw insertion holes, and a square connection hole provided at the connection part of the lens A rectangular hole is formed by closely inserting a resin-made rectangular cylinder into the rectangular hole, and the rectangular cylinder is closely inserted into the rectangular hole. So that it does not protrude, and a fixing screw is inserted into the screw insertion hole of the connecting portion and the square tube portion,
A lens connection structure for frameless eyeglasses, wherein a nut is screwed into a screw shaft protruding toward the lens side or the connection portion side and tightened to fix the connection portion to the lens. 3. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple for connecting lenses to a lens, wherein the connecting portion is provided with a screw insertion hole and an axis line. A square tube part with a screw insertion hole penetrating along it is formed by projecting integrally with the connection part by aligning the cores of both screw insertion holes, and a circular connection provided at the connection part of the lens A circular hole is formed by closely inserting a cylindrical body made of a soft resin into the hole, and the rectangular tube portion is press-fitted into the circular hole. In this press-fit state, the tip of the rectangular tube portion does not protrude from the connection hole. In this way, a fixing screw is inserted into the screw insertion hole of the connecting portion and the rectangular tube portion, and a nut is screwed and tightened to a screw shaft projecting toward the lens or the connecting portion to fix the connecting portion to the lens. A lens connecting structure in frameless glasses. 4. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple connecting lenses to a lens, wherein the connecting portion is extended through a step. A stepped mounting hole formed by connecting the opening to the square opening is provided, and a square tube member can be mounted in the mounting hole, and the square tube member has a screw insertion hole penetrating along the axis. An engagement flange portion protruding from the base end outer periphery of the rectangular tube portion, which can be fitted to the extended opening, is provided. The rectangular tube portion closely inserted into the rectangular opening through the extended opening is connected to a lens connecting portion. Closely inserted into the rectangular connection hole provided in the connector, in this inserted state, the tip of the rectangular tube is prevented from protruding from the connection hole, a fixing screw is inserted through the screw insertion hole, and the lens side or the connection side The nut is screwed into the screw shaft that projects to Lens coupling structure in rimless spectacles, characterized in that fixing the connecting part to the lens fitted state parts. 5. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple for connecting lenses to a lens, wherein the connecting portion is extended through a step. A stepped mounting hole formed by connecting the opening to the square opening is provided, and a square tube member can be mounted in the mounting hole, and the square tube member has a screw insertion hole penetrating along the axis. An engagement flange portion protruding from the base end outer periphery of the rectangular tube portion, which can be fitted to the extended opening, is provided. The rectangular tube portion closely inserted into the rectangular opening through the extended opening is connected to a lens connecting portion. A rectangular plug made of resin is closely inserted into the rectangular coupling hole provided in the rectangular hole, and inserted into a rectangular hole formed by closely inserting the screw into the rectangular hole. Insert a fixing screw through the hole, and attach it to the screw shaft that projects to the lens side or coupling section side. The then screwed tightening, lens coupling structure in rimless spectacles characterized in that the engagement flange portion is fixed to the lens connecting portion in a state fitted to the extension apertures. 6. A lens connecting structure in frameless glasses for connecting a connecting portion of a bridge member or a connecting portion of a temple connecting lenses to a lens, wherein the connecting portion is extended through a step. A stepped mounting hole formed by connecting the opening to the square opening is provided, and a square tube member can be mounted in the mounting hole, and the square tube member has a screw insertion hole penetrating along the axis. An engagement flange portion protruding from the base end outer periphery of the rectangular tube portion, which can be fitted to the extended opening, is provided. The rectangular tube portion closely inserted into the rectangular opening through the extended opening is connected to a lens connecting portion. The cylindrical body made of a soft resin is closely inserted into the circular connection hole provided in the above, and is press-fitted into a circular hole formed so that the tip of the rectangular tube does not protrude from the connection hole in the press-fitted state. A screw that inserts a fixing screw through the hole and protrudes toward the lens or the connecting part And screwed tightening the nut, the lens coupling structure in rimless spectacles characterized in that the engagement flange portion is fixed to the lens connecting portion in a state fitted to the extension apertures. 7. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple for connecting lenses to a lens, wherein the connecting portion is provided with a screw insertion hole. The square tube member can be attached to the portion, and the square tube member has the connecting portion on the base end surface of the square tube portion in which the screw insertion hole that matches the hole center is penetrated along the axis. The rectangular tube portion and the connecting portion are brought into contact with each other, and the engaging portion protruding from the base end edge of the rectangular tube portion is engaged with the smooth side surface of the connecting portion in a contact state, so that the rectangular tube portion and the connecting portion are mutually connected. The rectangular tube portion is closely inserted into a rectangular connection hole provided at a connection portion of the lens so that the tip of the rectangular tube portion does not protrude from the connection hole in the inserted state. And a fixing screw is inserted into the screw insertion hole of the connecting portion and the rectangular tube portion, and the lens side There is then screwed tightening the nut to the screw shaft which projects the connecting portion side, the lens coupling structure in rimless spectacles, characterized in that fixing the connecting part to the lens. 8. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple for connecting lenses to a lens, wherein said connecting portion is provided with a screw insertion hole, and said connection is provided. The square tube member can be attached to the portion, and the square tube member has the connecting portion on the base end surface of the square tube portion in which the screw insertion hole that matches the hole center is penetrated along the axis. The rectangular cylindrical portion and the connecting portion are brought into contact with each other by the engaging piece protruding from the base end edge of the rectangular cylindrical portion engaging with the smooth side surface of the connecting portion. The rectangular tube portion is inserted into a rectangular hole formed by closely inserting a resin rectangular tube into a rectangular connection hole provided at a connection portion of a lens. In the inserted state, make sure that the end of the rectangular tube does not protrude from the connection hole, and fix the screw into the screw insertion hole. And screwing a nut to a screw shaft protruding toward the lens side or the connecting portion side and tightening the nut to fix the connecting portion to the lens in a state where the engaging flange is fitted with the expansion opening. The lens connection structure in the frameless glasses that is the feature. 9. A lens connecting structure for frameless eyeglasses for connecting a connecting portion of a bridge member or a connecting portion of a temple for connecting lenses to a lens, wherein the connecting portion is provided with a screw insertion hole. The square tube member can be attached to the portion, and the square tube member has a connection portion on a base end surface of a square tube portion in which a screw insertion hole whose hole center matches the screw insertion hole is provided along an axis. The rectangular cylindrical portion and the connecting portion are brought into contact with each other by the engaging piece protruding from the base end edge of the rectangular cylindrical portion engaging with the smooth side surface of the connecting portion. The rectangular tube portion is pressed into a circular hole formed by closely inserting a soft resin cylindrical body into a circular connection hole provided at a lens connection portion, and In the press-fit state, the tip of the square tube portion is prevented from protruding from the connection hole, and the screw insertion hole is A fixing screw was inserted, and a nut was screwed onto a screw shaft protruding toward the lens or the connecting portion, and tightened, and the connecting portion was fixed to the lens with the engaging flange fitted to the extended opening. A lens connecting structure in frameless glasses. 10. The method according to claim 1, wherein a tip portion of the rectangular tube portion is tapered.
10. The lens connecting structure according to 7, 8, or 9.