JP2573140B2 - Lens fixing mechanism for rimless spectacles and components used therefor - 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 fixing mechanism for rimless spectacles and a lens fixing part used for the same, and more particularly, to left and right lenses attached to an inner strap on both ends of a bridge and a strap on a temple bracket side. A new lens fastening mechanism and lens fastening parts for rimless spectacles that enable easy and efficient assembly and lens replacement without the bolt and nut turning together when fastening the lens. is there.

[0002]

2. Description of the Related Art Rimless spectacles are glasses in which left and right spectacle lenses are fastened using bolts and nuts to inner straps provided at both ends of a bridge and outer straps provided at a protruding end of a temple bracket side. However, since there is no rim frame surrounding the left and right lenses, it has a wide field of view and is bright, and it has become a popular product in recent years because of its light weight and clean design.

However, in conventional rimless glasses, when a lens is fastened to a strap with bolts and nuts,
When the bolt is turned, the nut screwed to the opposite side with the lens in between will be entrained, and if the nut is turned, the bolt will entrain itself (so-called "co-rotation phenomenon"). In the case of lens replacement work, it is necessary to turn and tighten the nut while fixing the bolt with a jig, or to turn and tighten the bolt while fixing the nut, which is very troublesome and the work efficiency is poor.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned inconvenience in conventional rimless spectacles, and uses only a screwdriver or a socket wrench to fix a bolt and a nut when fixing a lens. An object of the present invention is to provide rimless spectacles that can be easily and quickly assembled and exchanged lenses without rotating, and to provide spectacle parts useful therefor.

[0005]

A solution adopted by the present inventor in the face of the above technical problem is to provide a bolt hole formed in a strap which is a support part for fixing a lens of a conventionally known rimless eyeglass. A polygonal shape, a deformed circle, a gear shape or a circular saw tooth shape , and a bolt and a nut which are inserted through the bolt holes of the strap and tightened to fix the lens, and abut around the bolt holes. The main part of the present invention lies in that a mechanism means for preventing rotation is provided by projecting a seat seat which can be engaged with the bolt hole on the back surface of the head or the back surface of the nut to be bolted.

The inventor of the present invention has stated that the basic idea of the above-mentioned co-rotation prevention mechanism is to fix the lens at the bolt hole of the inner strap and the temple bracket side at the bridge side of the rimless glasses. Extending to the bolt holes on the outer strap, and the bolts and nuts placed there, realizes rimless spectacles that make assembly and lens replacement extremely easy and efficient. By adding a means for drilling a hole for rest to be inserted into the loosely inserted state on the back side where the bolt enters, it is possible to prevent nuts from falling off or lost when assembling and replacing lenses. Was successfully removed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. FIG. 1 is an exploded perspective view of the lens fixing mechanism on the temple bracket side of the product according to the first embodiment of the present invention viewed from the eyepiece eyepiece direction, and FIG. 2 is a spectacle eyepiece showing the lens fixing mechanism on the bridge side of the same product. FIG. 3 is a perspective view of rimless spectacles as a product of the first embodiment, and FIG. 4 is a lens showing an example in which a recess is formed on the back side of a nut used in the product of the first embodiment. FIG. 5 is an exploded cross-sectional view of the fixing portion, FIG. 5 is an exploded perspective view of a lens fixing mechanism on the temple bracket side when a cap nut is used in the first embodiment, and FIG. 6 is a cross-sectional view of the cap nut. 7
FIG. 8 is an exploded perspective view of the lens fixing mechanism on the temple bracket side of the product of the second embodiment of the present invention viewed from the eyeglass eyepiece direction. FIG. 8 is a lens fixing mechanism of the product of the third embodiment of the present invention on the temple bracket side. FIG. 9 is an exploded perspective view of the mechanism as viewed from the front of the glasses, and FIG. 9 is a perspective explanatory view showing an example in which the present invention is applied to rimless glasses having a bifurcated ornamental-type temple bracket.

1 to 9, reference numeral 1 denotes a pair of left and right lenses, reference numeral 2 denotes a bridge, reference numeral 3 denotes a temple bracket, reference numeral 4 denotes a temple hinged to the bracket, and reference numeral 5 denotes a lens 1.1. Reference numeral 6 denotes a nut for fastening the left and right lenses 1 to each other by tightening the bolt 5 to fasten the left and right lenses 1. The left and right lenses 1
On the left and right sides of the left and right sides, fastening holes 11 are respectively formed at locations corresponding to bolt holes of an inner strap and an outer strap described later.

[First Embodiment: See FIGS. 1 to 3] In the first embodiment of the present invention, the bridge 2 is made of metal, and inner straps 21 are symmetrically extended at both left and right ends. In addition, square bolt holes 21a are formed in the vicinity of the protruding ends of the straps 21. A portion extending in a vertical arc from the base of the inner strap 21 is a metal support 22 for supporting the left and right lenses 1 inside.

Next, the temple bracket 3 is a pair of metal parts on the left and right sides, and an outer strap 31 for cooperating with the inner strap 21 is extended from the protruding end of the temple bracket 3. A square bolt hole 31a is also formed near the protruding end of the strap 31. A portion extending vertically from the base of the outer strap 31 in an arc shape is a metal support 32 for supporting the left and right lenses 1 on the outside.

On the other hand, the bolts 5 for fastening the lens 1 to the inner strap 21 and the outer strap 31 have bolt holes 21a and 31a provided on the inner strap 21 and the outer strap 31 on the back surface of the head 51. An Aza shoulder 52 having a quadrangular cross section protrudes. Therefore, the bolt 5 is inserted into the bolt hole 21a of the inner strap or the bolt hole 31a of the outer strap, and the nut 6 is inserted into the screw hole 53 of the bolt through the fastening hole 11 of the lens 1.
When screwing the bolts together, the bolts 21a and 31a forming a square shape can be engaged with the washer shoulder 52 of the bolt to prevent the bolt from rotating together, so that the nut is turned while fixing the bolt with the jig. This eliminates the need for troublesome actions such as tightening, and allows the lens to be quickly fixed (see FIGS. 1 and 2). In FIG. 1, reference numeral 54 denotes a buffer sleeve made of a soft synthetic resin which is inserted into the retaining hole 11 of the lens and is engaged between the threaded bar portion 53 of the bolt and the retaining hole 11 of the lens. A buffer washer made of a soft synthetic resin interposed between the nut 6 and the fastening hole 11 (of the lens).

In FIG. 4, instead of the nut in the above-described normal form, a recessed hole 63 for a rest into which the tip of the threaded rod portion 53 of the bolt 5 is to be inserted in a loosely fitted state is formed on the back side where the bolt 5 enters. The nut 6 provided is used. When the special nut 6 having such a sink hole is used, the screw rod portion 53 of the bolt 5 is inserted into the bolt hole 31, the buffer sleeve 54, the lens retaining hole 11, and the buffer washer 61 of the strap, and the tip of the screw rod portion is Since the nut 6 can be worked while being stably supported by fitting the recess 63 into the rest of the nut 6,
The nut can be prevented from falling off or lost when the lens is replaced.

FIG. 5 shows still another modification of the first embodiment, wherein a cap nut 6 having a sunk hole 63 is provided.
(See FIG. 6).

Second Embodiment: See FIG. 7 Also in the second embodiment of the present invention, reference numeral 1 is a lens, reference numeral 2 is a bridge, reference numeral 3 is a temple bracket, and reference numeral 4 is hinged to the bracket. Reference numeral 5 denotes a bolt for fixing the lens 1 to a predetermined position, and reference numeral 6 denotes a nut which is screwed to the bolt 5 to fasten the lens 1 tightly. Fastening holes 11 are also provided on both sides at positions corresponding to bolt holes of the inner strap and the outer strap described later. And
Inner straps 21 and 21 extend from both ends of the bridge 2, and an outer strap 31 also extends from the protruding end of the temple bracket 3.
In each of the vicinity of the protruding end of and 31, a square bolt hole 21a is provided.
31a is open. The product of the second embodiment is
There are many points in common with the first embodiment.

The difference between the second embodiment and the above-described first embodiment is that there is no seat shoulder on the back surface of the head 51 of the bolt 5, and a seat was provided on the back surface of the nut 6 screwed to the threaded rod 53 of this bolt. A shoulder 62 is protruding, and the seat 52 of this nut is seated on the inner strap 21 or the outer strap 31.
This is the point at which it engages with the square bolt holes 21 and 31 drilled.

Therefore, in the product of the second embodiment, for example, the case where the lens 1 is fixed to the outer strap 31 will be described. As shown in FIG. A buffering washer 61 is interposed therebetween, and a buffer sleeve 54 is bitten into the lens 1 retaining hole 11 on the eyepiece side.
Is inserted, and the head 51 of the bolt 5 is turned by a driver. Thus, even in this case,
Since the bolt 5 rotates in a state where the seat washer 62 of the nut 6 is engaged with the bolt groove 31a, the bolt 5 never rotates together.

[Third Embodiment: See FIG. 8] A product of a third embodiment of the present invention is shown in FIG. The third embodiment differs from the first embodiment and the second embodiment in that the strap 3 is joined to the eyepiece side of the lens 1. Thus, in the third embodiment, the strap 31
In the bolt hole 31a opened at the same time, a seat shoulder 62 on the back surface of the nut 6 is engaged, and a buffer sleeve 54 is engaged with the retaining hole 11 of the lens 1 on the front side, and the bolt 5 is moved from the front toward the eyepiece side. The lens is fastened by inserting the screw rod 52 and screwing the head 51 of the bolt 5 with a screwdriver. The same operation is performed for fastening the strap 1 at the bridge portion and the lens 1 (not shown).

Although the embodiments specifically described in the specification of the present application are as described above, the present invention is not limited to the above-described embodiments, and various modifications may be made within the description of the appended claims. It is possible to change the design. For example, in the above-described embodiment, the bolt holes 21a of the inner strap 21 and the bolt holes 31a of the outer strap 31 are illustrated as having a rectangular shape. However, triangular, pentagonal, hexagonal, etc. Not only polygonal shape but also elliptical shape, elliptical shape, or hole circumference
Spline shape with irregularities in gear shape, circular saw teeth around hole
Serrations that are uneven in shape, such as serration shapes,
If the distance between the axis of the bolt 5 to be inserted and the periphery of the bolt hole changes at each part and is not constant, a seat seat 52 projecting from the back of the head 51 of the bolt 5 or projecting from the back of the nut 6. Any shape may be used as long as the seat seat 62 to be engaged can be meshed and does not cause a problem in manufacturing, and any shape is within the technical scope of the present invention.

The temple bracket 3 may also be of the "decorative" type in which the take-out portion is bifurcated as shown in FIG. 9 and a plurality of outer straps 31 are formed at each protruding end. Needless to say, it is free and belongs to the technical scope of the present invention.

Further, when a recess 6 is provided in the nut 6, a buffer washer 62 is provided at an opening of the recess 63.
If they are fixed in advance, stability is improved when the bolt 5 is supported on the tip of the threaded rod portion 53, but such a design change naturally belongs to the technical scope of the present invention. .

[0021]

As described above with reference to the embodiments, in the present invention, a strap, which is a support portion for fixing a lens of rimless spectacles, may have a polygonal shape, a deformed circle, or a gear shape. While opening a circular saw-tooth-shaped bolt hole, insert the bolt hole of this strap into the bolt hole and the nut to fasten the lens and fix the lens. Since the back side adopts a counter-rotating mechanism called a seat washer that can be engaged with the bolt hole, any obstacles caused by the bolt and nut co-rotation phenomenon in conventional rimless glasses can be completely eliminated, and the lens can be fixed. This makes it possible to easily and quickly assemble and replace lenses without having to turn the bolt and nut together with just a screwdriver or socket wrench.

As described above, according to the present invention, the production efficiency of rimless spectacles and the work of attaching and detaching lenses can be greatly rationalized, and the industrial use value thereof is extremely large.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention;
It is the disassembled perspective view which looked at the lens fastening mechanism in the bracket side from the eyeglass eyepiece direction.

FIG. 2 is an exploded perspective view of the lens fixing mechanism on the bridge side of the same product as viewed from the eyepiece eyepiece direction.

FIG. 3 is a perspective view showing an outline of the entirety of the rimless spectacles as the first embodiment.

FIG. 4 is an exploded cross-sectional view of a lens fixing portion showing an example in which a recess for a rest is formed on the back surface side of a nut used in the product of the first embodiment.

FIG. 5 is an exploded perspective view of a lens fixing mechanism on the temple bracket side when a cap nut is used in place of the nut of the first embodiment.

FIG. 6 is a sectional view of the cap nut of FIG. 5;

FIG. 7 illustrates a second embodiment of the present invention,
It is the disassembled perspective view which looked at the lens fastening mechanism in the bracket side from the eyeglass eyepiece direction.

FIG. 8 shows a third embodiment of the present invention, in which a temple;
It is the disassembled perspective view which looked at the lens fastening mechanism in the bracket side from the front of spectacles.

FIG. 9 is a perspective explanatory view showing an example in which the present invention is applied to rimless spectacles having a bifurcated ornamental-type temple bracket.

[Explanation of symbols]

1 lens, 11 (lens) fastening holes, 2 bridges, 21
Inner strap, 21a bolt hole, 22 gold, 3 temple bracket, 31 outer strap, 31a bolt hole, 4 temples, 5 bolts, 51 head, 52 seat shoulder, 53 screw rod, 54 cushion sleeve, 6
Nut, 61 shock washer, 62 seat shoulder, 63
Rest sinkhole.

Claims (7)

(57) [Claims] 1. A bolt hole of an inner strap for fixing a lens on a bridge side of rimless glasses and a temple
Each of the bolt holes of the outer strap to which the lens is to be fixed on the bracket side is drilled in a polygonal shape, and the bolt holes to be abutted around these bolt holes can be engaged with the bolt holes on the back of the head or the back of the nut. Protruding seats, and engaging each of the bolt holes forming a polygonal shape with the seat washer on the back of the bolt head or the seat on the back of the nut, tightening the bolt and nut together to stop the left and right lenses. A lens fastening mechanism for rimless spectacles, which is worn. 2. A bolt hole and a temple and a hole of an inner strap for fixing a lens on a bridge side of rimless spectacles.
Each of the bolt holes of the outer strap on which the lens is to be fastened on the bracket side is formed in a deformed circular shape, and the bolt holes to be abutted around these bolt holes or the back surface of the nut or the nut have the same shape as the bolt holes. A contoured seat shoulder is protruded, and a seated shoulder on the back of the bolt head or a seated shoulder on the back of the nut is fitted into each of the bolt holes forming a deformed circular shape, and the bolt and nut are tightened to each other so that the left and right sides are tightened. A lens fixing mechanism for rimless spectacles, wherein the lens is fixed. 3. A bolt hole of an inner strap and a temple and a lens for fixing a lens on a bridge side of rimless spectacles.
Each of the bolt holes of the outer strap to which the lens should be fixed on the bracket side is drilled in a gear shape or a circular saw shape ,
On the back of the head or the nut of the bolt to be brought into contact with the periphery of these bolt holes, protruding seat seat shoulders that can be engaged with the bolt holes are provided. A lens fastening mechanism for rimless spectacles, characterized in that a seat seat shoulder on the back surface of the nut is fitted, and the bolt and the nut are fastened to each other to fasten the left and right lenses. 4. A bolt hole of a strap of a rimless spectacle has a polygonal shape, a deformed circle, a gear shape or a circular saw tooth.
While forming the shape, meshing the lens by inserting tightening the bolt hole of the strap in the bolt and nut fastened to the bolt holes on the back surface of the bolt head rear surface or the nut to be abutted against the periphery of the bolt holes A lens fastening part for rimless spectacles characterized by protruding a possible Aza shoulder. 5. The lens fastening part according to claim 4, wherein straps having polygonal, deformed, or gear-shaped or circular saw-shaped bolt holes are provided at both ends of the bridge. 6. A strap having a polygonal, deformed, or gear-shaped or circular saw-shaped bolt hole is provided at a projecting end of the temple bracket for foldably connecting the temple. The lens fastening part according to claim 4, wherein 7. A bolt having a seating shoulder on the back surface of the head to be engaged with a bolt hole of a strap; and a rest sinking hole into which a tip of a screw rod portion of the bolt is to be inserted in a loose fit state is drilled on the back surface side where the bolt enters. 5. The lens fixing part for rimless spectacles according to claim 4, wherein the lens fixing part uses a provided nut.