JP2015016001A - Ring frame for optometry test lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ring frame for optometry test lens, which is fitted with a test lens used for optometry and comprises a ring body as a main body and a knob piece, which solves problems that conventional one comprises a ring part and a knob piece made of metal together, needs more material cost and processing cost and is hard to be provided at low cost.SOLUTION: In a ring frame for optometry test lens which comprises a ring part fitted with a test lens and a knob piece which is formed projecting on the upper outer edge of the ring part, the ring part and the knob piece are integrally molded from hard synthetic resin with hardness not lower than 70 in Shore D-hardness, the ring part in the bottom of the knob piece is made with a gap and the test lens is fitted in the ring part, then, the test lens is fixed to the ring part by connecting both ends of the gaps with a fastener.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optometry test lens ring frame, and more particularly to an optometry test lens ring frame that is used for optometry work by fitting a test lens and mounting it on an optometry trial frame.

The test lens, also referred to as a toyral lens, is indispensable when preparing glasses, and is attached to a trial frame in a state of being fitted into an annular ring frame for use in optometry.
A knob piece is attached to the upper part of the outer edge of the ring frame for the optometry test lens. The knob piece is picked up with a finger and attached to or detached from the trial frame.

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  In a general optometry test lens ring frame, the ring part into which the test lens is fitted and the knob part on the upper part are both made of metal, and after the knob part is brazed and fixed to the ring part, the whole is plated. And finished product. However, these conventional ring frames for optometry test lenses have a problem that they have to be expensive because the material cost is high and the assembling work is troublesome.

  In an eyeglass retailer, a large number of test lenses fitted in the ring frame must be prepared for optometry work in advance, and the unit price of the optometry test lens ring frame is also the cost of optometry work. Since it has a direct influence, the demand for cost reduction has been large. In order to respond to this requirement, it was proposed that the knob piece be a synthetic resin molded product with low material cost and suitable for mass production, and this was attached to a metal ring part, but since two kinds of materials are combined, After all, it cannot be denied that the structure is complicated, and it was not completely satisfactory in terms of cost.

  As a result of research conducted to solve the above-described conventional problems related to the optometry test lens ring frame, the present inventor has obtained an inexpensive optometry test lens ring frame that is low in material cost, easy to assemble and can be produced at low cost. It has been successfully developed and is proposed here as the present invention.

  In a optometry test lens ring frame comprising a ring portion into which a test lens is fitted and a knob piece protruding from the upper outer edge of the ring portion, the ring portion and the knob piece are made of a hard synthetic resin having a Shore D hardness of 70 or more. The test lens is fixed to the ring part by forming the cut part in the ring part below the knob piece, fitting the test lens in the ring part, and then connecting the both ends of the cut with a fastener. In this way, the above problems were solved.

  Expand the cut in the ring part, fit the test lens on the inner diameter side of the ring part, superimpose the ends on both sides of the cut, insert fasteners such as screws and eyelets on both ends, and tighten this to fix the test lens Secure to the ring. In this state, the knob piece is picked with a finger and attached to the trial frame for optometry.

  Since the ring part and the knob piece are integrally formed of synthetic resin, it is easy to assemble, and the material cost and manufacturing cost can be kept low, and it can be colored easily by mixing pigment in the synthetic resin material. The color can be changed according to the type of the test lens, and the color classification makes it easy to identify the test lens and contributes to improving the efficiency of the optometry work.

1 is a front view of Example 1 of a ring frame for an optometry test lens according to the present invention. FIG. The partial enlarged front view of the principal part of FIG. Similarly, the front view which showed the condition before inserting the ring frame for optometry test lenses. Similarly, a cross-sectional view of a situation where an optometric test lens is fitted and connected with a fastener. The front view of the other Example at the time of mounting | wearing with the optometry test lens which made the pear shape.

  In a optometry test lens ring frame comprising a ring portion into which a test lens is fitted and a knob piece protruding from the upper outer edge of the ring portion, the ring portion and the knob piece are made of a hard synthetic resin having a Shore D hardness of 70 or more. The greatest feature is in the point of integral molding.

    In the figure, reference numeral 1 denotes a ring which is one of the main components of the optometry test lens ring frame. The ring 1 has a substantially annular shape divided into right and left by a cut 4 provided in the upper portion thereof. A V-shaped cross-section Yakuken where the outer edge of the test lens 2 is fitted is formed, and from the outer edge near one end face of the cut portion, a spatula shaped knob piece 5 is formed from the outer edge near the other end face. The rectangular parallelepiped small protrusions 6 are integrally extended upward.

  The ring portion 1 and the knob piece 5 are made of a hard synthetic resin having a Shore D hardness of 70 or more and are integrally formed by a technique such as injection molding. A polyamide resin is suitably used as the hard synthetic resin material. I can do it. Note that polycarbonate resin is easy to break, and if the synthetic resin is soft, the ring portion 1 is distorted following the bending of the knob piece 5 and the test lens 2 is easily detached, both of which are not preferable. .

  And from each side of the base of the said knob piece 5 and the small protrusion 6, the long hole 7 which penetrates both is formed in the horizontal direction, The fasteners 8, such as a screw and an eyelet, are passed through this long hole 7, By tightening this up, the part divided to the right and left by the cut 4 is joined.

  Since the test lens 2 is usually circular as shown in FIG. 3, the ring 1 is also generally circular, but the test lens 2 for bifocal glasses is shown in FIG. As shown, there are many cases where a western shape is formed, and in that case, the ring portion 1 also has a western shape as shown in FIG.

  In addition, pigments of a desired color may be mixed into the synthetic resin material used as the material of the ring part 1 and the knob piece 5 to color them. In this case, the color is changed according to the type of the test lens 1. Thus, the classification and identification of the test lens 2 can be performed by color coding.

  This embodiment has the structure as described above. As shown in FIG. 3, the slit 4 of the ring portion 1 is widened, and the test lens 2 is fitted on the inner diameter side of the ring portion 1, and as shown in FIG. The end portions on both sides of the cut 4 are overlapped, and a fastener 8 such as a screw or eyelet is inserted into the long hole 7 provided in the base portion of the knob piece 5 and the small projection 6 to tighten it, and the test lens 2 is fixed to the ring part 1. In this state, the knob piece 5 is pinched with a finger and mounted on a trial frame (not shown) for optometry.

  Since the ring 1 and the knob piece 5 are integrally formed of synthetic resin, assembly is easy, material costs and manufacturing costs can be kept low, and coloring can be performed, so the color can be changed according to the type of test lens. Since the test lens can be easily identified by color coding, it has the effect of improving the efficiency of the optometry work and has high practicality.

  Of course, it can be used not only for myopia, farsightedness, and astigmatism but also for test lenses for both near and near glasses.

1. Ring frame Test lens 4. Break 5. Knob piece 6. Small protrusion 7. Long hole 8. Fastener

Claims (1)

  In a optometry test lens ring frame comprising a ring portion into which a test lens is fitted and a knob piece protruding from the upper outer edge of the ring portion, the ring portion and the knob piece are made of a hard synthetic resin having a Shore D hardness of 70 or more. The test lens is fixed to the ring part by forming the cut part in the ring part below the knob piece, fitting the test lens in the ring part, and then connecting the both ends of the cut with a fastener. A ring frame for an optometry test lens, characterized in that

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