JP3013377U - Lens hole jig - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a lens drilling jig that enables a retailer, who has not been able to drill holes in rimless glasses, to easily and accurately drill a lens. And [Structure] A support plate 49, a lens holding means for fixing the two stacked lenses 3 on the support plate 49, and the support plate 49 is determined depending on the type of lens with respect to a horizontal plane when a lens hole is formed. It has a support means attached to the support plate 49 at a predetermined angle and a fixing means to the drilling machine. The lens holding means is at least one clamp member 5
9, 61, 63, 65, and at least one of the clamp members has a protrusion 80 that protrudes from the lens holding surface 75 on the lower side of the lens holding surface 75 of the clamp member. The protrusion size of the protrusion 80 is defined by the shape of the two lenses, and the thickness of the protrusion 80 is smaller than the thickness 3b of the lower lens of the two lenses.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a jig for fixing a lens and adjusting a hole-forming position when a hole for screwing is made in the lens when assembling rimless glasses.

[0002]

[Background of device]

 In recent years, as eyeglasses have become fashionable, so-called rimless eyeglasses have become popular. Rimless spectacles are designed by drilling holes in both ends of the left and right lenses and tightening nuts with screws through them instead of removing all or part of the rim that covers the lens and supports the lens. (C) The structure has a structure in which the portion and the temple are fixed to the lens, and each lens and the bridge are fixed.

Since such rimless spectacles are installed in a retail store, a demonstration lens having a constant lens thickness and a curved surface is attached to a frame to maintain the overall shape of the spectacles. It will be exhibited in the store in the state. Once the customer has selected a frame that he / she likes, he / she completes the spectacles by exchanging a lens with a degree that matches the eyesight of the customer into an appropriate shape and then making a hole in this lens.

By the way, since the wisdom portion has a peculiar dimension for each frame, when attaching the prescription lens to the frame, a hole is formed in the lens surface at an accurate distance from the lens peripheral surface that matches the dimension of the wisdom portion. Otherwise, there will be rattling between the lens and the frame. This positioning is done by stacking the demo lens on the prescription lens and finding the corresponding position of the prescription lens from the hole in the demo lens.

FIG. 7 shows a state in which the demonstration lens and the prescription lens are overlapped. As can be seen from the figure, the peripheral surface of the demo lens is perpendicular to the upper and lower surfaces, but the peripheral surface of the prescription lens (showing a concave lens in the figure) is parallel to the optical axis. Therefore, as shown in FIG. 8, it is not possible to determine the position of the hole by aligning the peripheral surfaces of both lenses, unlike when two demo lenses are stacked. Also, since both lenses have a curvature, even if the demo lens is placed exactly right above the prescription lens, the position of the prescription lens seen through the demo lens hole is the position of the demo lens hole. Does not correspond to.

Therefore, if the prescription lens is not aligned by shifting the prescription lens to the left or right by a certain distance from the state shown in FIG. 7, the prescription lens is accurately drilled at a position corresponding to the hole of the demonstration lens. I can't. However, in order for a retail store to perform such positioning work, the conventional method had to rely on intuition, resulting in a slight misalignment of the holes and rattling between the lens and the frame, or in the worst case. There were times when I made the lens defective.

[0007] Therefore, many retail stores are currently entrusting the specialized stores with the assembly of the prescription lens and the frame including the drilling work only for the rimless glasses. It was also a cause of delay in delivery of glasses.

[0008]

[Problems to be solved by the device]

 The present invention has been made in view of the above situation, and a lens hole drilling jig that can easily and accurately drill a lens in a retail store, which has conventionally been unable to drill holes in rimless glasses. The purpose is to provide.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, a lens hole making jig of the present invention is provided for a support plate having a surface on which two lenses can be placed in an overlapping manner, and is provided for the support plate. Lens holding means for fixing the lens on the support plate, and when the lens is opened, the support plate is attached to the support plate so that the support plate has a predetermined angle with respect to a horizontal plane depending on the type of the lens. And a fixing means for fixing to the drilling machine.

Further, the lens holding means has at least one clamp member, and at least one of the clamp members has a protruding portion that protrudes from the lens holding surface on the lower side of the lens holding surface of the clamp member. The protrusion size of the protrusion may be defined by the shape of the two lenses, and the thickness of the protrusion may be less than or equal to the thickness of the lower lens of the two lenses.

Further, the protrusion may be capable of changing a protrusion size from the lens holding surface.

Further, the peripheral surfaces of the two lenses are substantially perpendicular to the lens surfaces, and the lens holding means has at least one clamp member, and at least one lens holding member of the clamp members is provided. The surface may be inclined corresponding to the inclination of the peripheral surface of the lens when the two lenses are fixed to the jig.

The lens holding means has a plurality of clamp members capable of supporting the two lenses from multiple directions, and at least one of the clamp members slides toward or away from the lenses. It may be possible and fixable.

At least one of the lens holding surfaces of the plurality of clamp members may have an elastic material, or the center of the lens holding surfaces is recessed so that both ends in the width direction of the lens holding surfaces project. Good.

Further, the lens holding surface of the clamp member on the side where the lower lens projects when the two lenses are held by the jig is formed at an acute angle with respect to the surface of the support plate. Or may have a portion adapted to a step caused by the displacement of the two lenses.

Further, between the support plate and the fixing means, there may be provided means capable of changing an inclination angle of the support plate with respect to a horizontal plane when the fixing means is fixed to a drilling machine. The means may be a ball joint mechanism.

Of the two lenses, the upper lens may be a demo lens, and the lower lens may be a prescription lens.

[0018]

[Action]

 A support plate having a surface on which two lenses can be placed in a stack, and a lens holding means provided for the support plate and for fixing the two stacked lenses on the support plate, When the lens hole is opened, the support plate is provided with a support means attached to the support plate so that the support plate forms a predetermined angle with the horizontal plane depending on the type of the lens, and a fixing means to the drilling machine. In the tool, since the two lenses can be fixed in a state in which they are tilted at a predetermined angle with respect to the horizontal plane at the time of drilling the lens, the hole can be drilled at a predetermined angle in the lens.

Further, the lens holding means has at least one clamp member, and at least one of the clamp members has a protruding portion that protrudes from the lens holding surface on the lower side of the lens holding surface of the clamp member. And the protrusion size of the protrusion is defined by the shape of the two lenses, and the thickness of the protrusion is less than or equal to the thickness of the lower lens of the two lenses, the protrusion is Due to the existence of the above, it is possible to position the upper lens by shifting the protrusion size of the protrusion with respect to the lower lens. In this case, if the protrusion size of the protrusion is determined in advance according to the shape of the lens, as shown in FIG. 6, the lower side corresponds to the position of the hole of the upper lens (position of distance L from the side peripheral surface). The lens can also be provided with a hole at a distance L from the side peripheral surface of the lens.

If the protrusion size of the protrusion can be changed from the lens holding surface, the protrusion size of the protrusion can be easily adjusted to a predetermined value according to the type of lens.

Further, the lens holding means has a plurality of clamp members capable of supporting the two lenses in multiple directions, and at least one of the clamp members is slidable so as to move toward or away from the lens. If it can be fixed, it is easy to set the lens at a predetermined position on the support plate.

The peripheral surfaces of the two lenses are substantially perpendicular to the lens surfaces, and the lens holding means has at least one clamp member, and at least one of the clamp members holds the lens. If the surface is inclined corresponding to the inclination of the peripheral surface of the lens when the two lenses are fixed to the jig, the surface contacts the lens holding surface in which the peripheral surfaces of the two lenses are inclined. By making contact with each other, it is possible to form a hole at the position of the lower lens corresponding to the position of the hole of the upper lens.

If at least one of the lens holding surfaces of the plurality of clamp members has an elastic material, the elastic material is deformed when the lens is fixed, so that the lens can be more reliably held.

Further, by denting the center of the lens holding surface so that both ends in the width direction thereof project, two points on the lens peripheral surface can be held by one clamp member, and more reliable holding is possible.

Further, the lens holding surface of the clamp member on the side where the lower lens projects when the two lenses are held by the jig is formed at an acute angle with respect to the surface of the support plate, Alternatively, if there is a portion that conforms to the step generated by the displacement of the two lenses, the portion where the two lenses are displaced can be held more reliably.

Further, if there is a means between the support plate and the fixing means that can change the inclination angle of the support plate with respect to the horizontal plane when the fixing means is fixed to the drilling machine, depending on the type of lens. By changing the tilt angle of the support plate, the lens can be punched at a predetermined angle. If this means is a ball joint mechanism, the inclination angle of the support plate can be freely set and fixed, and the support plate can be fixed by rotating it in any direction.

If the upper lens is a demo lens and the lower lens is a prescription lens, a hole is formed in the prescription lens corresponding to the position of the demo lens hole using the above jig. It is possible to accurately align the desired position.

[0028]

【Example】

 Hereinafter, the present invention will be described with reference to the illustrated embodiments. First, before entering the description of the lens punching jig of the present invention, the structure of the rimless spectacles 1 including a symmetrical lens for punching work using this jig will be described.

FIG. 1 shows the left part of the rimless glasses 1. In the figure, reference numeral 3 indicates a lens. At one end side of this lens, a lateral frame 5 in which a wisdom 7 and a temple 9 are connected by a hinge 11 is connected at the wisdom 7, and the other end side of the lens is connected. A bridge portion 13 having a pad 15 and forming a part of the frame is connected to the. The rimless spectacles 1 have no rim around the lens, and the lens is supported at two points of each connecting portion between the wisdom 7 and the bridge portion 13.

A lens contact portion 17 is formed on the tip 7 so as to extend vertically, and a protrusion 19 that is bent from the lens contact portion 17 and extends toward the front surface of the lens is formed. A lens contact portion 23 is also formed in the bridge portion 13, and a protruding portion 25 that is bent from there and extends toward the lens front surface side is formed. The protrusion 19 and the protrusion 25 have retaining holes 21 and 27 at their tips.

On the other hand, the lens 3 is formed with two holes 4a and 4b (see FIG. 3) penetrating the lens. The hole 4a is formed at a position corresponding to the position of the retaining hole 21 when the lens contacting portion 17 on the wisdom 7 side is in contact with the outer peripheral surface of the lens 3 at a predetermined position. 4b is formed at a position corresponding to the position of the fastening hole 27 when the lens contact portion 23 on the bridge portion 13 side is in contact with a predetermined position on the inner peripheral surface of the lens 3.

Then, with the fastening hole 21 on the side of the wisdom 7 aligned with the hole 4a on the outside of the lens 3, and the fastening hole 27 on the side of the bridge portion 13 matched with the hole 4b on the inner side of the lens 3, the screws 2 9 respectively. Penetrates through the nylon washer 28, the fastening holes 21 and 27, and the nylon washer 30 and is fastened with a nut 31. The right side portion of the frameless glasses 1 is also symmetrical with the left side portion.

The rimless spectacles 1 have a structure as described above. The lens 3 incorporates a demonstration lens 3a that has a uniform lens thickness and is curved when it is displayed at a store. When a customer purchases eyeglasses, the screw 29 is removed. The prescription lens 3b is incorporated instead of the demo lens 3a. In the present specification, the lens 3a for demonstration and the lens 3b with the power are referred to as the lens 3 when it is not particularly necessary to distinguish them.

The lens punching jig of the present invention is used to complete the above-mentioned rimless glasses 1 from the same position as the demo lens 3a, that is, from the position where the lens contact portions 17 and 23 contact the peripheral surface of the lens. It is used for accurate alignment when the holes 4a and 4b are formed in the prescription lens 3b at the position of the distance L (see FIGS. 1 and 6). The structure of the lens punching jig of the present invention will be described below.

FIG. 2 shows a lens punching jig 41, which comprises a work table 43, a support rod 45 for supporting the work table 43, and a fixing mechanism 47 for fixing the jig to the drilling machine. . The work table 43 includes a vertical support rod 45 and a fixing mechanism so that the lens can be drilled at a predetermined angle with a drill when the prescription lens 3b is fixed to the work table 43 and a hole is formed. It is fixed at a certain angle with respect to 47.

As shown in FIGS. 2 and 3, the work table 43 has a rectangular support plate 49 attached to the support rod 45, and female screws are formed inside the center of each piece of the support plate 49. Screw holes 51 are formed. Further, on the upper surface of the support plate 49, a vertical groove 53 having a relatively wide width is formed at the center in the vertical direction, and a horizontal groove 55 having a relatively narrow width is formed at the center in the horizontal direction. A grid line 57 is drawn on the surface in the vicinity of the center of the vertical groove 53 for convenience of lens alignment.

In the vertical groove 53, two clamp members 59 and 61, which are lens holding means and have substantially the same width as the width of the vertical groove 53, are provided so as to be slidably opposed to each other along the vertical groove 53. In the lateral groove 55, two clamp members 63 and 65, which are lens holding means and have substantially the same width as the width of the lateral groove 55, are provided slidably opposite each other along the lateral groove 55. Each of the clamp members 59, 61, 63, 65 is formed so as to rise up inside the sliding plate 67 that is in contact with the supporting plate 49 and inside the sliding plate 67 (the side facing the center of the supporting plate 49). And a holding block 69.

The sliding plate 67 of each of the clamp members 59, 61, 63, 65 has a long hole 71 formed at the center thereof along the sliding direction. Then, with these elongated holes 71 aligned with the screw holes 51 formed in the support plate 49, the screw head 73 of the fixing screw 73 is screwed into the screw hole 51 at a predetermined position while being screwed into the screw hole 51 from above. By tightening the sliding plate 67 with, the positions of the clamp members 59, 61, 63, 65 can be fixed. A lever extending laterally from the axis of the screw may be provided on the head of the fixing screw 73 so that the fixing screw 73 can be strongly tightened by one-touch type by hand.

A lens holding surface 75 is formed on each holding block 69 on the side facing the center of the support plate 49. Of the vertically slidable clamp members 59 and 61, the lens holding surface 75 of the upper clamp member 59 in FIG. 3 is perpendicular to the support plate 49, but the lens holding surface 75 of the lower clamp member 61 in FIG. The lens holding surface 75 is formed at a slightly acute angle with respect to the support plate 49. The reason for forming the lens holding surface at an acute angle is to make it easier to hold the upper lens when holding the two lenses with a slight shift, as will be described later.

Of the clamp members 63 and 65 that can slide in the lateral direction, the lens holding surface 75 of the right clamp member 65 in FIG. 3 is a plane perpendicular to the support plate 49. The lens holding surface 75 of the clamp member 63 on the middle left side is perpendicular to the support plate 49 and is formed so that its center is recessed so that both ends in the width direction protrude. Since the circumference of the lens is curved, holding the lens at two points (protruding parts at both ends in the width direction) is more stable than holding the lens at one point on one lens holding surface 75. Because it can be fixed.

An elastic material 76 such as sponge or rubber is attached to each lens holding surface 75 of the lower clamp member 61 and the right clamp member 65 in order to more securely hold the lens. Has been.

Next, referring to FIG. 4 including a view in which the clamp member 59 is broken along line 4-4 in FIG. 3 and a rear view of the clamp member 59, the lower surface side of the clamp member 59 that is vertically slidable is A receiving groove 77 having a relatively wide width is formed along the sliding direction, and an adjusting slide plate 79 having the same width and the same depth as the receiving groove 77 is slidable in the sliding direction of the clamp member 59. It is provided. The thickness of the adjusting slide plate 79 (corresponding to the depth of the receiving groove 77) is substantially the same as the thickness of the prescription lens 3b, but may be equal to or less than the thickness of the prescription lens 3b. One end of the adjustment slide plate 79 can project from the lens holding surface 75, and this projecting portion constitutes a projecting portion 80. The adjustment slide plate 79 also has a long hole 71 corresponding to the slide plate 67.

A hole 81 is formed in the center of the holding block 69 of the clamp member 59, and a penetrating elongated hole 83 is formed in the center of the hole 81. On the other hand, also in the adjusting slide plate 79, a screw hole 85 having a female screw is formed at a position corresponding to the elongated through hole 83. Then, with the screw hole 85 of the adjusting slide plate 79 aligned within the range of the through hole 83, the fixing screw 87 is screwed into the screw hole 85 from the hole 81 side, and the head of the fixing screw 87 is inserted into the hole 81. It is tightened by contacting the inner step. As a result, the adjusting slide plate 79 is fixed in a state in which the protruding portion 80 is protruded from the lens holding surface 75 by a predetermined length. The degree of protrusion of the protrusion 80 can be adjusted by loosening the fixing screw 87 and moving the adjustment slide plate 79 within the range of the through-slot 83.

Next, the fixing mechanism 47 is provided with a magnetic clamp 91 capable of generating and eliminating a magnet attraction force by turning the switch 89 on and off. The magnetic clamp 91 attracts a magnetic force to a predetermined position of a drilling machine (not shown). It can be fixed.

The lens punching jig 41 of the present invention has the structure as described above. The operation of making a hole in the lens 3 using this jig will be described below. First, the nut 31, the screw 29, and the washers 28, 30 are removed from the rimless eyeglasses 1 displayed by the customer to separate the frame and the demo lens 3a. The prescription lens 3b is preliminarily processed into the same shape as the demonstration lens 3a or an appropriate shape that does not hinder the holding of the lens when the lens is punched.

Further, the adjustment slide plate 79 of the upper clamp member 59 is adjusted so as to protrude from the lens holding surface 75 by a predetermined dimension determined according to the lens of the rimless glasses. The area of each clamp member 59, 61, 63, 65 surrounded by the lens holding surface 75 is made wider than the size of the lens.

Next, as shown in FIG. 3, in the state where the demonstration lens 3a is superposed on the prescription lens 3b, the end of the prescription lens 3b on the perforated portion side is the upper clamp member 59 side. It is placed on the support plate 49 in the facing direction. Then, the end of the prescription lens 3b on the side of the perforated portion is brought into contact with the end surface of the adjustment slide plate 79, and the demonstration lens 3a is slid and brought into contact with the lens holding surface 75 of the clamp member 59. In this state, the remaining clamp members 61, 63, 65 are slid to bring the lens holding surfaces 75 into contact with the peripheral surfaces of the two lenses with a slight pressure, and then fixed with fixing screws 73. Fig. 6 shows a state in which the two lenses are fixed.

After the lens is fixed to the lens hole making jig 41, the positioning pin is fixed to the drill chuck of the drilling machine, and the lens hole making jig 41 is placed on the drilling machine. While moving the pin up and down, the lens hole drilling jig 41 is moved to find a position where the tip of the pin exactly fits the hole of the demo lens 3a. When the position is determined, the switch 89 is turned on by the roller to fix the lens hole making jig 41 to the drilling machine by magnetic attraction.

In this state, a drill blade is attached to the chuck instead of the pin, and a hole is formed in the prescription lens 3b through the demonstration lens 3a. The position may be directly adjusted by the drill blade without using the pin. By repeating such an operation, holes are formed at two positions on the opposite side of the prescription lens 3b and the other prescription lens. If the screws 29 are passed through these holes and fastened with the nuts 31, the rimless glasses 1 are completed.

The present invention is as described above, but a part of the above embodiment can be modified as follows. In the above-described embodiment, the workbench 43 is fixed to the support rod 45 and the fixing mechanism 47 at a fixed angle. However, for example, a fixed ball joint mechanism 93 as shown in FIG. Can be provided. By doing so, the work table 43 can be moved in any direction with respect to the fixing mechanism 47 at any angle, and the work table 43 can be freely rotated, so that the work table 43 can be fixed in a predetermined state. You can also

As shown in FIG. 5, the ball joint mechanism 93 has a ball portion 95 formed at the end of the support rod 45 extending from the work table 43 side, and a ball portion at the end of the support rod 45 extending from the fixing mechanism 47 side. A receiving portion 97 for receiving 95 is formed. Below the receiving portion 97, an annular pressing member 99 having an oblique contact surface 100 formed on the lower surface side and a pressing surface 102 formed on the upper surface side is located.

A through hole 101 is formed in the middle of the support rod 45 extending from the fixing mechanism 47 side, and a bolt 103 penetrates the through hole 101. The head side of the bolt 103 is fitted in the vicinity of the entrance of the through hole 101, while the other end side of the bolt 103 has an oblique push-up surface 105 formed on the upper side of the insertion side and has an annular hole having a burrow hole in the center. The block 107 is slidably fitted. The annular block 107 advances to the head side of the bolt by rotating the cock 109 including the nut and screwing the nut into the bolt. Then, after the push-up surface 105 abuts on the abutment surface 100 of the pressing member 99, the pressing member 99 is pushed up and the pressing surface 102 is brought into pressure contact with the lower surface of the ball portion 95, so that the ball portion 95. Are fixed in the receiving portion 97.

When such a ball joint mechanism 93 is applied, depending on the type of frame of the rimless glasses or the lens used therefor, the position of the hole is adjusted in advance or at the time of positioning the hole by using the above-mentioned pin. , The angle of the hole made in the lens can be adjusted to a predetermined angle. Instead of the ball joint mechanism 93, a joint mechanism that can change only the vertical inclination of the work table 43 with respect to the fixing mechanism 47 may be applied. In addition, a conventionally known joint mechanism can be applied so that the angle of the work table 43 can be freely changed or a specific movement can be freely performed.

The combination of various forms of the lens holding surface 75 described in the above embodiments need not be limited to the above, and for example, an elastic material may be provided on all the lens holding surfaces 75, or not only on the left side but also on the left side. The lens holding surface 75 of another clamp member can also be configured to support the lens at both ends in the width direction. In addition to this, the lens holding surface 75 may have, for example, a concave surface that conforms to the curve of the outer circumference of a specific lens, or each holding block 69 itself may be formed of a deformable material such as rubber to form a lens. When held, the lens holding surface 75 of each holding block 69 may be deformable according to the outer peripheral shape of the lens.

Further, regarding the upper clamp member 59, the lens holding surface 75 thereof may be inclined as shown in FIG. 9 without having the protruding portion 80. The inclination angle θ is set to such an angle that the peripheral surface of the demo lens 3a is exactly in contact with the lens holding surface 75 when the two demo lenses 3a are placed on the support plate 49, for example. ing. The clamp member having such a tilted lens holding surface 75 is applied to, for example, a demo lens having no holes, and it is desired to make a hole at the same position as a demo lens having a hole. In some cases, such as when the lens with a degree of future has a peripheral surface formed at a right angle to the lens surface as in the case of the above-mentioned demonstration lens, a hole may be formed in the lens with a degree. In this case, by stacking two lenses so that the lens with a hole is positioned on the upper side and contacting the inclined lens holding surface 75 with the peripheral surfaces of the lenses aligned, The position of the hole of the lens will be positioned at the same position of the lower lens.

Further, it is not necessary to clamp the lens from all sides, and the number of positions to be clamped may be 2, 3, or 5 or more. In addition to the above-mentioned clamp member, the clamp means may be of a type that clamps the lens from above or below or from the left or right.

Further, in the above embodiment, the adjusting slide plate 79 is provided so that the protruding condition of the protruding portion 80 can be adjusted, but a fixed protruding portion 80 integrally formed with the clamp member may be formed in the clamp member. At this point, most of the demonstration lenses have a constant thickness of 2.0 mm, so one type of clamp member with a specific protrusion dimension can be used. However, when the demo lenses are diversified, it is possible to deal with various lenses by preparing a plurality of clamp members with different protrusion dimensions of the protrusion 80.

Further, instead of providing the adjusting slide plate 79 on the clamp member 59 on the upper side, various width dimensions in the sliding direction of the clamp member 59 can be made different with a thickness equal to or less than the thickness of the prescription lens 3b. A spacer may be prepared, and this may be selected as a protrusion depending on the lens and applied.

Further, in the above-described embodiment, the lens holding surface 75 of the lower clamp member 61 is inclined at an acute angle so that the demo lens 3a can be fixed more reliably. When fixing is desired, a spacer is bitten between the lens holding surface 75 of the lower clamp member 61 and the demo lens 3a, or a structure such as the adjusting slide plate 79 is used for the lower clamp member. It may be provided above the lower surface of 61 by the thickness of the lens, and the demo lens 3a may be fixed by protruding this slide plate by the amount of the deviation of the demo lens 3a.

In the above description, for convenience of description, the terms of upper, lower, left, and right clamp members in FIG. 3 have been used, but for example, the clamp member provided with the protrusion 80 is the upper clamp member. It is not meant to be specific to a member, but it is clear that the features of each clamping member described in the specification are equally applicable to other clamping members.

[0061]

[Effect of device]

 According to the present invention, the two lenses can be fixed in a state in which they are tilted at a predetermined angle with respect to the horizontal plane at the time of making a hole in the lens, so that the hole can be made in the lens at a predetermined angle.

If the projection size of the projecting portion is determined in advance according to the shape of the lens, when the demo lens is positioned by shifting the projection lens with respect to the prescription lens by the projection size of the projecting portion, The prescription lens can be drilled at a position corresponding to the position of the hole. Therefore, since it is possible to accurately position the hole, which has conventionally relied on intuition, it is possible to easily open a hole in the prescription lens and assemble the rimless glasses even at a retail store. As a result, the time required to outsource a hole to a specialty store is shortened, and spectacles can be handed over to customers early.

[Brief description of drawings]

FIG. 1 is a perspective view showing a left side portion of rimless glasses.

FIG. 2 is a side view showing a lens hole making jig of the present invention.

FIG. 3 is a top view showing a state in which a lens is fixed to a workbench.

FIG. 4 is a view in which the upper clamp member is cut along line 4-4 in FIG. 3 and a rear view of the clamp member.

FIG. 5 is a partially cutaway perspective view showing a ball joint mechanism.

FIG. 6 is an explanatory diagram showing a state in which a demo lens and a prescription lens are aligned and fixed on a support plate.

FIG. 7 is a side view showing a state in which a demonstration lens is superposed on a prescription lens.

FIG. 8 is a side view showing a state in which demonstration lenses are overlapped with their edges aligned.

FIG. 9 is a side view showing a state where the edges of the demonstration lenses are fixed to each other along the inclined lens holding surface.

[Explanation of symbols]

 1 Edgeless glasses 3 Lens 3a Demonstration lens 3b Degree lens 4a, 4b Hole 5 Side frame 7 Ji 9 Temple 11 hinge 13 Bridge part 15 Pad 17 Lens contact part 19, 25 Projection part 21, 27 Fastening hole 23 Lens contact part 28 Washer 29 Screw 30 Washer 31 Nut 41 Lens hole drilling jig 43 Work table 45 Support rod 47 Fixing mechanism 49 Support plate 51 Screwing hole 53 Vertical groove 55 Horizontal groove 57 Grid line 59 Clamping member (upper) 61 Clamp Member (lower side) 63 Clamping member (left side) 65 Clamping member (right side) 67 Sliding plate 69 Holding block 71 Long hole 73 Fixing screw 75 Lens holding surface 77 Receiving groove 79 Adjusting slide plate 80 Projection 81 Hole 83 Through long hole 85 Screw Hole 87 Fixing Screw 89 Switch 91 Magnetic Clamp 93 Ballge Into mechanism 95 ball portion 97 receiving portion 99 pressing member 100 contact surface 101 through hole 102 pressing surface 103 volts 105 pushed up surface 107 annular block

Claims (12)

[Scope of utility model registration request] 1. A support plate having a surface on which two lenses can be placed in a stack, and a lens provided on the support plate for fixing the two stacked lenses on the support plate. A holding means; a supporting means attached to the supporting plate so that the supporting plate has a predetermined angle with respect to a horizontal plane depending on the type of the lens when the lens is bored; and a fixing means to the drilling machine. A lens drilling jig characterized in that 2. The lens holding means has at least one clamp member, and at least one of the clamp members has a protrusion protruding from the lens holding surface at a lower side of the lens holding surface of the clamp member. Has a section,
The protrusion size of the protrusion is defined by the shape of the two lenses, and the thickness of the protrusion is less than or equal to the thickness of the lower lens of the two lenses. The described lens punching jig. 3. The lens punching jig according to claim 2, wherein the projecting portion can change a projecting dimension from the lens holding surface. 4. The peripheral surfaces of the two lenses are substantially perpendicular to the lens surfaces, and the lens holding means has at least one clamp member, and at least one lens holding member of the clamp members is held. The surface is inclined corresponding to the inclination of the peripheral surface of the lens when the two lenses are fixed to the jig.
The described lens punching jig. 5. The lens holding means has a plurality of clamp members capable of supporting the two lenses from multiple directions, and at least one of the clamp members is slidable so as to approach or separate from the lenses. The lens punching jig according to claim 2, 3 or 4, which is fixable. 6. The lens punching jig according to claim 2, wherein at least one of the lens holding surfaces of the plurality of clamp members has an elastic material. 7. The center of at least one of the lens holding surfaces of the plurality of clamp members is recessed so that both ends in the width direction of the lens holding surface project. The lens punching jig according to 3, 4, 5 or 6. 8. The lens holding surface of the clamp member on the side where the lower lens projects when the two lenses are held by the jig is formed at an acute angle with respect to the surface of the support plate. Claims 2, 3, 4, 5, 6 are characterized in that
Alternatively, the lens punching jig described in 7. 9. The lens holding surface of the clamp member on the side where the lower lens projects when the two lenses are held by the jig conforms to a step generated by the displacement of the two lenses. The lens punching jig according to claim 2, 3, 4, 5, 6, or 7, having a portion. 10. A means for changing the inclination angle of the support plate with respect to a horizontal plane when the fixing means is fixed to a drilling machine is provided between the supporting plate and the fixing means. Items 2, 3, 4, 5, 6,
The lens punching jig according to 7, 8 or 9. 11. The lens punching jig according to claim 10, wherein the means capable of changing the inclination angle of the support plate is a ball joint mechanism. 12. The one of the two lenses, wherein the upper lens is a demo lens, and the lower lens is a prescription lens,
The lens hole jig according to 6, 7, 8, 9, 10 or 11.