JP2004144909A - Lens fitting piece and structure of lens mounting part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate mounting of spectacle lenses, to prevent cracking of the lenses during fitting and to prevent the lenses from becoming weak in the joints in use. <P>SOLUTION: Holes 21 are made in inner and outer edge parts of a lens 20 and a pipe screw 10 with a screw 11 formed on the inner face is inserted into each hole 21. A mounting part 2 of a bridge 1 and a fitting part 5 of an endpiece 4 are kept along the surface side of the lens 20 and holes in their leading ends are brought into line with the holes 21 in the lens 20, respectively. Setscrews 16 are inserted from the surface side of the lens 20 into the holes in the mounting parts 2, 5, engaged with the screws 11 on the inner faces of the pipe screws 10 and fastened. By this fastening of the setscrews 16, the pipe screws 10 are extended and enlarged in diameter and the outer surfaces 12 of the pipe screws 10 are strongly pressed on the insides of the screw holes 21 in the lenses 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure of a lens attachment and a lens attachment, and more particularly to a structure of a lens attachment and a lens attachment effective for attaching a lens between a bridge and an armor of a two-point glasses frame. .
[0002]
[Prior art]
There are various types of two-point glasses frames, for example, an I-shaped bridge, a nose pad attached to the bridge, an L-shaped armor, and a freely rotatable hinge on the armor. One with a temple attached to the body is generally known.
[0003]
Then, in order to attach the lens between the bridge and the armor of the eyeglass frame having such a configuration, first, the lens is provided in a state penetrating the inner edge and the outer edge of the lens using a tool such as a drill. Are provided at predetermined intervals, a bridge is positioned between the two lenses, the mounting portions at both ends of the bridge are positioned on the front surface of the lens, and the holes of each mounting portion and the inner edge of the lens are located. Align the holes with each other, insert a set screw from the front side of the lens into both holes via a washer, and screw a nut through a washer to the part of the set screw protruding from the back side of the lens. Tighten with. Then, a cap nut for preventing loosening is screwed to the tip of the set screw, and tightened with a predetermined torque.
[0004]
Then, the armor is positioned at the outer edge of each lens, the mounting part at one end of the armor is positioned on the front side of the lens, and the hole of the mounting part is aligned with the hole of the outer edge of the lens, and from the front side of the lens A set screw is inserted into both holes through a washer, and a nut is screwed into the set screw projecting from the rear surface side of the lens via a washer, and tightened with a predetermined torque. Then, a cap nut for preventing loosening is screwed to the tip of the set screw, and tightened with a predetermined torque.
[0005]
In this way, two lenses can be attached between the bridge and the armor of the two-point glasses frame.
[0006]
However, when the nut is screwed into the set screw and tightened, excessive stress is applied to the lens in the thickness direction and the lens may be broken from the hole, so it is necessary to use nerves for assembly This requires skill in assembly.
[0007]
Furthermore, since the set screw, washer, nut, and cap nut are used, the number of parts is large, the cost of parts is large, and the assembly cost is high.
[0008]
Furthermore, when a nut is screwed into the set screw, a tool having a special structure is required, so that an inexperienced operator may damage the lens.
[0009]
Furthermore, since the nut and the cap nut are located on the back side of the lens, they obstruct the view and hinder the wiping of the lens.
[0010]
[Problems to be solved by the invention]
This invention solves the above-mentioned problems of the conventional art.When the lens is attached between the bridge and the armor of the spectacle frame, excessive stress is applied to the lens, and the lens has a hole. It does not break, and the number of parts can be reduced, the cost of parts can be kept low, the assembly cost can be kept low, and tools with a special structure are used. The lens can be easily mounted without scratching the lens, even for inexperienced workers. It is an object of the present invention to provide a structure of a lens mount and a lens mount that does not have any problem.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a lens mounting device according to claim 1 of the present invention is a lens mounting device for mounting a lens between a bridge and an armor of an eyeglass frame, and includes an inner edge portion of the lens, and / or Alternatively, the pipe screw inserted into the hole provided on the outer edge portion and provided with a screw on the inner peripheral surface is matched with the pipe screw on the inner edge portion and the hole on the mounting portion of the bridge, and / or the pipe on the outer edge portion is provided. Align the screw with the hole in the mounting part of the armor, and in this state, insert it through the hole in each mounting part, screw it into the inner peripheral side of each pipe screw, and tighten it. And a set screw having a diameter. In addition, the lens attachment according to claim 2 is the lens attachment according to claim 1, wherein a flange is provided at one end of the pipe screw, and the flange is provided with an attachment portion for the bridge and the armor. This means employs a means configured to be brought into contact with the surface opposite to the surface. Further, a lens mounting device according to a third aspect is the lens mounting device according to the second aspect, which employs means in which a peripheral surface of the flange is formed in a polygonal shape.
Further, the structure of the lens mounting portion according to claim 4 of the present invention is a structure of the lens mounting portion for mounting the lens between the bridge and the armor of the eyeglass frame, wherein the lens mounting portion has an inner edge and / or an outer edge. A hole is provided, and a pipe screw having a threaded surface is inserted into the hole so that the pipe screw at the inner edge and the hole at the mounting portion of the bridge are aligned, and / or the pipe screw at the outer edge and the armature of the armor are fitted. Align the holes of the mounting section with each other, insert a set screw into the hole of each mounting section, screw each set screw to the inner peripheral side of each pipe screw, tighten and expand each pipe screw to expand its diameter. The means configured as described above is employed. Furthermore, in the structure of the lens attachment portion according to claim 5, in the structure of the lens attachment portion according to claim 4, a flange is provided at one end of the pipe screw, and the flange is attached to the bridge and the armor attachment portion. The present invention employs a means configured to be brought into contact with a surface opposite to the surface of the lens provided. Furthermore, the structure of the lens mounting portion according to claim 6 employs, in the structure of the lens mounting portion according to claim 5, means in which the peripheral surface of the flange is formed in a polygonal shape.
[0012]
[Action]
By adopting the above means, the present invention allows a pipe screw to be inserted into a hole provided at an inner edge portion and an outer edge portion of a lens, and to match a pipe screw at an inner edge portion with a hole at a mounting portion of a bridge, By aligning the pipe screw on the outer edge with the hole in the mounting part of the armor, inserting a set screw in each hole of each mounting part, screwing each set screw into each pipe screw and tightening, the pipe screw is The outer diameter of the pipe screw is pressed against the inner diameter of the hole of the lens.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention shown in the drawings will be described.
FIGS. 1 to 5 show an embodiment of the structure of the lens mounting device and the lens mounting portion according to the present invention. The structure of the lens mounting device and the lens mounting portion is applied to a two-point type eyeglass frame. This is effective for attaching a lens, and is configured such that the lens 20 is attached between the bridge 1 and the armor 4 of the spectacle frame by cooperation of the pipe screw 10 and the set screw 16.
[0014]
The two-point glasses frame includes an I-shaped bridge 1, a nose pad 8 attached to the bridge 1, an L-shaped armor 4, and a rod-shaped temple 9 rotatably attached to the armor 4. I have.
[0015]
At both ends of the bridge 1, mounting portions 2 are provided, respectively, and at the tip of each mounting portion 2, holes for screw insertion (not shown) are provided in a penetrating state. An arc-shaped stopper 3 that comes into contact with the peripheral surface of the lens 20 to prevent the rotation of the lens 20 is integrally provided at the root of the lens 2.
[0016]
At one end of the armor 4, a mounting portion 5 is provided, and at the tip of each mounting portion 5, a hole 6 for screw insertion is provided so as to pass therethrough. An arc-shaped stopper 7 which comes into contact with the peripheral surface of the lens 20 to prevent the rotation of the lens 20 is provided integrally.
[0017]
The other end of the armor 4 is bifurcated, and one of the bifurcated parts is provided with a screw insertion hole (not shown) penetrating therethrough. (Not shown) are provided in a penetrating state.
[0018]
At one end of the temple 9, an engaging piece (not shown) that can be engaged with a bifurcated portion of the armor 4 is integrally provided, and this engaging piece has a screw insertion hole (not shown). ) Is provided in a penetrating state.
[0019]
Then, the engaging piece at one end of the temple 9 is engaged with the bifurcated portion of the armor 4, and in this state, a screw (not shown) is inserted between the two and screwed together, whereby the temple is attached to the armor 4. 9 can be connected rotatably.
[0020]
The pipe screw 10 has a cylindrical shape in which a screw 11 is provided on the inner peripheral surface over the entire circumference. The pipe screw 10 protrudes radially outward at one end, and the outer peripheral surface 14 has a polygonal shape (this embodiment). In the embodiment, a flange 13 formed in a hexagonal shape is provided integrally. The inner diameter of the pipe screw 10 is tightly fitted with the set screw 16 so that when the set screw 16 is screwed, the other end is pushed open. The length l of the pipe screw 10 from the bottom surface of the flange 13 is equal to or shorter than the thickness of the lens 20.
[0021]
Although not shown, a notch may be provided at the other end of the pipe screw 10 so as to penetrate between the inner and outer peripheral surfaces so that the other end of the pipe screw 10 can be easily spread.
[0022]
The set screw 16 is composed of a head 17 and a leg 18 provided integrally with the center of the head 17, and the screw on the inner peripheral side of the pipe screw 10 is entirely provided on the leg 18. A screw 19 that can be screwed with the screw 11 is provided. The length of the leg 18 of the set screw 16 is the same as the thickness of the mounting portion 2 of the bridge 1 plus the thickness of the lens 20 and the thickness of the mounting portion 5 of the armor 4 plus the thickness of the lens 20. Or it is formed short.
[0023]
Then, in order to attach the lens 20 to the two-point type eyeglass frame having the above-described configuration, first, use a tool such as a drill or a tap at a predetermined position on the inner edge portion and the outer edge portion of the lens 20. 21 are provided in a penetrating state, and two such lenses 20, 20 are prepared.
[0024]
Then, the pipe screws 10 are inserted into the respective holes 21 of the lenses 20 from the rear surface side of the lenses 20, and the flanges 13 of the respective pipe screws 10 are brought into contact with the rear surfaces of the lenses 20, respectively.
[0025]
Then, the two lenses 20 and 20 are positioned at a predetermined interval, the bridge 1 is positioned between the inner edges of the two lenses 20 and 20, and the mounting portions 2 and 2 at both ends of the bridge 1 are The holes of the mounting portions 2 are aligned with the holes 21 of the inner edge of each lens 20 along the surface of the lens 20.
[0026]
Then, from the surface side of each lens 20, a set screw 16 is inserted into a hole of each mounting portion 2 of the bridge 1, and each set screw 16 is screwed to the screw 11 on the inner peripheral side of each pipe screw 10. The flange 13 of the pipe screw 10 is held by a spanner, and in this state, each set screw 16 is tightened by a screwdriver. In this case, since the fitting between the pipe screw 10 and the set screw 16 is tight, the pipe screw 10 is pushed and expanded by tightening each set screw 16, and the outer peripheral surface 12 of the pipe screw 10 becomes a lens. The inner peripheral surface of the hole 21 is strongly pressed. Furthermore, each mounting part 2 and the lens 20 are sandwiched between the head 17 of each set screw 16 and the flange 13 of each pipe screw 10, so that each mounting part 2 is strongly pressed against the surface of the lens 20.
[0027]
Then, the armor 4 is positioned at the outer edge of each lens 20, and the mounting portion 5 of each armor 4 is arranged along the surface side of each lens 20, and the hole 6 of each mounting portion 5 and the hole at the outer edge of each lens 20 are formed. 21 is matched.
[0028]
Then, from the surface side of each lens 20, a set screw 16 is inserted into the hole 6 of the mounting portion 5 of each armor 4, and each set screw 16 is screwed with the screw 11 on the inner peripheral side of each pipe screw 10. The flange 13 of the screw 10 is held by a spanner, and in this state, each set screw 16 is tightened by a screwdriver. In this case, since the fitting between the pipe screw 10 and the set screw 16 is tight, the pipe screw 10 is pushed and expanded by tightening each set screw 16, and the outer peripheral surface 12 of the pipe screw 10 becomes a lens. The inner peripheral surface of the hole 21 is strongly pressed. Furthermore, each mounting part 5 and the lens 20 are clamped between the head 17 of each set screw 16 and the flange 13 of each pipe screw 10, so that each mounting part 2 is strongly pressed against the surface of the lens 20.
[0029]
In this manner, two lenses 20, 20 can be attached between the bridge 1 and the armor 4 of the two-point glasses frame.
[0030]
In the structure of the lens mounting portion according to this embodiment configured as described above, the lens 20 is mounted between the bridge 1 and the armor 4 by the cooperation of the pipe screw 10 and the set screw 16. Therefore, the number of parts can be reduced, and the parts cost does not increase, so that the assembly cost can be reduced.
[0031]
Further, when the set screw 16 is screwed into the pipe screw 10 and tightened, the pipe screw 10 is expanded and expanded, and the outer peripheral surface of the pipe screw 10 is strongly pressed against the inner peripheral surface of the hole 21 of the lens 20. Will be done. In addition, since each of the mounting portions 2 and 5 and the lens 20 are sandwiched between the flange 13 of each pipe screw 10 and the head 17 of the set screw 16, each of the mounting portions 2 and 5 is strongly pressed against the lens 20. Will be done. Therefore, since loosening of the pipe screw 10 and the set screw 16 can be prevented, rattling of the lens 20 during use can be prevented.
[0032]
Furthermore, even if the set screw 16 is screwed into the pipe screw 10 and tightened, the load is mainly applied in the direction of expanding the hole 21 of the lens 20, and an excessive load is not applied in the thickness direction of the lens 20. In addition, the lens 20 does not break from the screw hole 21, so that it is not necessary to use nerves for assembling, and even an inexperienced worker can easily assemble.
[0033]
Furthermore, since the pipe screw 10 and the set screw 16 can be easily tightened by using a screwdriver and a wrench, a tool having a special structure is not required, and even if the operator has little experience, the lens 20 may be damaged. The lens 20 can be attached without attaching.
[0034]
Since the nut and the cap nut are not provided on the back side of the lens 20, the view is not obstructed, and when the lens 20 is wiped, the nut and the cap nut are not obstructed.
[0035]
【The invention's effect】
According to the present invention, as described above, the lens can be attached between the bridge and the armor by the cooperation of the pipe screw and the set screw. Therefore, since the number of parts can be reduced, the cost of parts does not increase, and the assembly cost can be reduced. In addition, when the set screw is screwed into the pipe screw and tightened, the pipe screw is expanded and expanded, so the outer peripheral surface of the pipe screw is strongly pressed against the inner peripheral surface of the lens hole. Will be. Moreover, each mounting portion and the lens are sandwiched between the set screw and the flange of the pipe screw, and each mounting portion is strongly pressed against the lens. Therefore, the loosening of the pipe screw and the set screw can be prevented, and the lens does not rattle during use. Furthermore, when the set screw is tightened to the pipe screw, a load is applied mainly in the direction of expanding the lens hole, and the load applied in the thickness direction of the lens is small, so it is unlikely that the lens will break from the screw hole part. In other words, even inexperienced workers can mount the lens with confidence. Furthermore, when tightening pipe screws and set screws, there is no need for specially structured tools, and the screws can be easily tightened with a screwdriver and spanner. The lens can be attached without attaching the mark. Furthermore, since there are no nuts and cap nuts on the back side of the lens, they do not obstruct the field of view and do not interfere with wiping the lens.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an entire structure of a lens attachment and a lens attachment according to an embodiment of the present invention.
FIG. 2 is a partially enlarged view of what is shown in FIG.
FIG. 3 is a sectional view taken along line AA of FIG.
FIG. 4 is an enlarged plan view of a pipe screw shown in FIG.
FIG. 5 is a front view of what is shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Bridge 2 ... Mounting part 3 ... Stopper 4 ... Armor 5 ... Mounting part 6 ... Hole 7 ... Stopper 8 ... Nose pad 9 ... Temple 10 ... Pipe screw 11 ... Screw 12 ... ... Outer peripheral surface 13 ... Flange 14 ... Outer peripheral surface 16 ... Set screw 17 ... Head 18 ... Leg 19 ... Screw 20 ... Lens 21 ... Hole

Claims (6)

What is claimed is: 1. A lens mounting device for mounting a lens between a bridge of a spectacle frame and an armor, wherein the pipe is inserted into a hole provided in an inner edge portion and / or an outer edge portion of the lens and has a thread provided on an inner peripheral surface thereof. The screw, the pipe screw at the inner edge and the hole of the mounting portion of the bridge are matched, and / or the pipe screw of the outer edge is matched with the hole of the mounting portion of the armor. A lens mounting tool, comprising: a set screw that is inserted, screwed into the inner peripheral side of each pipe screw, and tightened to expand and expand each pipe screw. 2. The lens mounting according to claim 1, wherein a flange is provided at one end of the pipe screw, and the flange is brought into contact with a surface opposite to a surface of the lens on which the mounting portion of the bridge and the armor is provided. Utensils. The lens attachment according to claim 2, wherein a peripheral surface of the flange is formed in a polygonal shape. A structure of a lens mounting portion for mounting a lens between a bridge of a spectacle frame and an armor, wherein a hole is provided in an inner edge portion and / or an outer edge portion of the lens, and a pipe is provided in the hole with a thread on a peripheral surface. Insert the screw, align the pipe screw on the inner edge with the hole in the mounting part of the bridge, and / or match the pipe screw on the outer edge with the hole in the mounting part of the armor, and stop in the hole of each mounting part A structure of a lens mounting portion, wherein a screw is inserted, each set screw is screwed into an inner peripheral side of each pipe screw and tightened to expand each pipe screw so as to expand its diameter. The lens mounting according to claim 4, wherein a flange is provided at one end of the pipe screw, and the flange is configured to abut on a surface opposite to a surface of the lens on which the bridge and armor mounting portions are provided. Division structure. The lens mounting part according to claim 5, wherein a peripheral surface of the flange is formed in a polygonal shape.

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