JP2006243168A - Rim wire for spectacle frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rim wire which can stably be bent and reduce the defective fraction of a rim formation. <P>SOLUTION: Both ends 12 and 12 of an inner peripheral surface portion 9 of the rim wire are formed into flat surfaces to abut against a machining member of a bending processing machine in a sheet state. Consequently, when the rim wire is bent into an annular rim 2, the rim wire sufficiently abuts against the processing member abutting the rim wire to curve it. Consequently, stable bending processing can be carried out to reduce the defective fraction of the rim formation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rim wire for eyeglass frames, and more particularly to a shape of a rim wire for eyeglass frames capable of improving the performance of bending.

Conventional eyeglass frame rim wires are known, for example, which are formed into an annular rim by a bending machine and have a groove for fitting an eyeglass lens on an inner peripheral surface portion (for example, , See Patent Document 1).
JP 2004-109839 A

  In general, a bending machine is provided with a processing member for contacting a rim line and bending the rim line in an annular shape. On the other hand, since the contact portion of the rim line that contacts the processed member is formed with a curved surface, the contact between the rim line and the processed member is not sufficient. For this reason, the holding | maintenance between process members becomes uncertain, and thereby bending processing becomes unstable, and the molding defect rate of the rim is increased.

  The present invention solves the conventional problems as described above, and the rim wire is firmly held by the processing member of the bending machine, enabling stable bending processing and reducing the molding defect rate of the rim. An object of the present invention is to provide a rim wire for a spectacle frame that can be made to occur.

  In order to solve the above-described problems, a rim wire for a spectacle frame according to claim 1 of the present invention is a rim wire for forming a rim of a spectacle frame, and is a bending machine for bending in an annular shape. An inner peripheral surface portion that abuts the processed member, an outer peripheral surface portion, and both side surface portions that connect the inner peripheral surface portion and the outer peripheral surface portion, and the inner peripheral surface portion has a groove portion into which the spectacle lens fits in the center portion, and The inner peripheral surface portions on both sides employ means formed so as to abut on the processing member in a planar shape.

  Further, a spectacle frame rim wire according to claim 2 of the present invention is the spectacle frame rim wire according to claim 1, wherein both end portions of the inner peripheral surface portion in contact with the processing member are formed as flat surfaces. Means.

  Furthermore, the eyeglass frame rim wire according to claim 3 of the present invention is the eyeglass frame rim wire according to claim 1, which employs means formed using a non-ferrous metal as a material.

  By configuring the eyeglass frame rim wire of the present invention as described above, both end portions of the inner peripheral surface portion sufficiently abut against the processing member of the bending machine. Accordingly, it is possible to stably curve the rim wire during bending, and to reduce the rim molding defect rate.

Hereinafter, embodiments of the present invention shown in the drawings will be described.
1 and 2 show an embodiment of a rim wire for a spectacle frame according to the present invention. FIG. 1 is a schematic view showing the whole spectacle frame, and FIG. 2 is a line AA in FIG. It is the figure seen along and is a sectional view of a rim (rim line).

  For example, as shown in FIG. 1, the eyeglass frame 1 includes a pair of rims 2, 2, a bridge 3 that connects the two rims 2, 2, and a nose pad 4 that is attached to the inner portions of the rims 2, 2. The temple 6 is connected to the outer edge of each rim 2 via a hinge 5.

  The rim 2 is formed in an annular body. In order to form the rim 2, in order to determine the shape of the rim 2 by sending out a linear rim line by a plurality of rollers that rotate in opposite directions of a bending machine (not shown). While being along the surface of a processing member (not shown) for bending the rim line, a force is applied to bend the rim line.

  As shown in FIG. 2, the rim 2 is formed from an inner peripheral surface portion 9 that comes into contact with a processing member of a bending machine, an outer peripheral surface portion 10, and both side surface portions 11 and 11 that connect the inner peripheral surface portion 9 and the outer peripheral surface portion 10. Has been.

  The inner peripheral surface portion 9 is provided with a substantially V-shaped groove portion 8 for fitting the spectacle lens 7 in the center portion, and both end portions 12 and 12 that come into contact with the processing member. The both end portions 12 and 12 of the inner peripheral surface portion 9 have a predetermined width with respect to the processed member and are formed into flat surfaces so as to come into contact with the surface.

  The outer peripheral surface part 10 is formed in a curved surface, and is formed so that the center part protrudes.

  Both side surface portions 11 and 11 are formed so that the direction of the inner peripheral surface portion 9 is inclined outward.

  As a material for the rim wire, a non-ferrous metal, for example, a general spectacle frame is used, and a β-titanium alloy in which a crystal structure at room temperature is a β phase and a mixture of titanium and other components is used. Is done.

  In addition, it does not specifically limit about the ratio of each component of (beta) titanium alloy, It is good to use what changed the ratio of each component according to the use.

  The eyeglass frame rim wire having the above-described configuration forms both end portions 12 and 12 of the inner peripheral surface portion 9 on a flat surface, so that the flat surface sufficiently comes into contact with a processing member of a bending machine. As a result, the rim wire can be stably bent at the time of bending, and the molding failure rate of the rim is reduced.

  In addition, the size and shape of the rim wire according to the embodiment of the present invention described above are not particularly limited, and may be a size or shape that is firmly held by a bending machine and can be stably bent. That's fine.

It is the schematic of the spectacles frame using the rim line of the present invention. It is sectional drawing of the rim | limb (rim line) seen along the AA line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Glasses frame 2 Rim 3 Bridge 4 Nose pad 5 Hinge 6 Temple 7 Glasses lens 8 Groove part 9 Inner peripheral surface part 10 Outer peripheral part 11 Side part 12 End part

Claims (3)

  A rim wire for forming a rim of a spectacle frame, which is an inner peripheral surface portion that comes into contact with a processing member of a bending machine for bending an annular shape, an outer peripheral surface portion, and both side surface portions that connect the inner peripheral surface portion and the outer peripheral surface portion. The inner peripheral surface portion has a groove portion into which a spectacle lens fits in the central portion, and the inner peripheral surface portions on both sides of the groove portion are formed so as to abut on the processing member in a planar shape. Characteristic rim wire for eyeglass frames.   The rim wire for eyeglass frames according to claim 1, wherein both end portions of the inner peripheral surface portion in contact with the processing member are formed to be flat surfaces. The rim wire for eyeglass frames according to claim 1, wherein the rim wire is formed using a non-ferrous metal as a material.

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