JP2006208953A - Spectacles and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve structural reliability and commodity value by improving holding performance for lenses by rims of a spectacle frame and then securely preventing the lenses from falling from the rims even in an environment wherein there are influences of vibration, a shock, temperature variation, etc. <P>SOLUTION: Disclosed are spectacles having the lenses mounted in inner grooves of the rims, the spectacles being characterized in that a substrate processing agent layer is formed on the entire outer circumferential surface of each lens and/or the entire inner peripheral surface of each rim by applying a non-setting liquid substrate processing agent and a flexible cured polymer layer is formed on the substrate processing agent layer by applying and curing a room-temperature setting type polymer at room temperature. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention improves the holding performance of the lens by the rim of the spectacle frame, avoids the effects of vibration, impact, and temperature change, and reliably prevents the lens from falling off the rim. It relates to the manufacturing method.

  In general, when a lens for correcting vision or a polarizing lens is fixed to a spectacle frame, a method of fixing with a rim that holds the entire outer peripheral surface of the lens is the most rigid and has become the mainstream of spectacle frames. This rim is usually formed of metal or hard synthetic resin, and the outer peripheral surface of the lens is held by an inner groove formed on the inner peripheral surface thereof.

  FIG. 2 is a diagram showing a configuration of a general spectacle frame A. In order to attach the lens 3 to the inner groove 1a of the rim 1 of the spectacle frame A having the same configuration, the spectacle frame A is usually a component of the spectacle frame A. The lens 3 is fitted in the inner groove 1a of the rim 1 that is expanded by removing the rim lock screw disposed at the positions of the ends B1 and B2, and the rim lock screw is tightened to complete the mounting of the lens 3.

  In this case, as a general means, the mounting state is stabilized by fitting into the inner groove 1a of the rim 1 while the outer peripheral surface 3a of the lens 3 is covered with the groove cell C made of synthetic resin having flexibility. There is a way to make it. FIG. 3 is a sectional view showing a state in which the groove cell C is interposed in the gap between the inner groove 1 a of the rim 1 and the outer peripheral surface 3 a of the lens 3. In addition, there is a method to insert the rim that does not expand by integral molding, etc. by applying a forced pressure to the lens. However, since the clearance between the outer peripheral surface of the lens and the inner groove of the rim must be increased, the rim of the lens There are problems such as a decrease in stability.

  By the way, in order to complete spectacles by the above-described method, first, the lens 3 must be processed into an outer shape that matches the shape of the rim 1 of the spectacle frame A. Therefore, an extra part on the outer periphery of the lens is removed by using a dedicated processing machine to match the rim shape. Then, the edge on the outer periphery of the lens is polished to form a tapered surface, and an outer peripheral surface 3 a that coincides with the inner groove 1 a of the rim 1 is formed.

  The lens 3 thus molded has a shape that follows the inner groove 1 a of the rim 1, but it is extremely difficult to make it completely coincide with each other without causing stress concentration on the outer peripheral surface 3 a of the lens 3. Therefore, the gap cannot be accommodated in the inner groove 1 a of the rim 1, and a gap is generated between the outer peripheral surface 3 a of the lens 3 and the inner groove 1 a of the rim 1. Such a state is considered to cause a serious problem particularly in a lens whose outer peripheral surface is vulnerable to an impact like a polarizing lens.

  In order to solve such a problem, that is, in order to prevent the occurrence of local stress concentration, a method of interposing a solid soft resin layer between the inner groove of the rim and the outer peripheral surface of the lens has been attempted (for example, Patent Document 1). This is a liquid silicone resin that is elastically deformed even when solidified in the inner groove of the rim. After the liquid silicone resin is solidified, a lens is attached and the rim lock screw is tightened. It is.

  Therefore, the applicant of the present application conducted a reproduction experiment of the above-described conventional method to confirm its practicality and effect. FIG. 4 is a diagram showing the process of the reproduction experiment, and shows a cross-sectional view of a portion where the lens 3 is mounted in the inner groove 1a of the rim 1 in the order of the process.

  FIG. 4A shows a state in which the liquid silicone resin 2 is applied to the inner groove 1 a of the rim 1. The application of the silicone resin 2 is not performed manually or mechanically, so that the inner groove 1a is narrow and the silicone resin 2 is liquid, so that the wall thickness is uniform on the inclined wall surface of the inner groove 1a. It is impossible to apply to. Therefore, as a practical means, after applying an approximate required amount as shown in FIG. 4A, an excess portion of the silicone resin 2 applied from the opening of the inner groove 1a as shown in FIG. Remove and leave until solidified. Even if the coating state is adjusted as shown in FIG. 4 (B), the silicone resin 2 is in a liquid state and therefore tends to flow down in the inclined direction. It does not solidify.

Then, after the silicone resin 2 applied as described above is solidified, as shown in FIG. 4C, the outer peripheral surface 3a of the lens 3 is aligned with the inner groove 1a of the rim 1, and the rim lock screw is tightened to fix the lens 3 Complete the installation. Since the solidified silicone resin 2 has a cross-sectional shape that follows the inner groove 1a of the rim 1, the central portion is thickest and thin toward both sides. Stress concentrates at the center of the top ridge 3b, and peeling phenomenon occurs at both side ends of the solidified silicone resin 2 due to the influence of the stress concentration.
Japanese Patent Application Laid-Open No. 2004-279887

  As described above, the glasses configured by the above-described method have a configuration that is common in common with glasses using existing groove cells. That is, the thickness of the layer formed by solidifying the silicone resin 2 is leveled, and the width formed between the inner groove 1a of the rim 1 and the outer peripheral surface 3a of the lens 3 varies. It cannot be expected to coincide exactly with a gap. As a result, when the rim lock screw is tightened and the lens 3 is held by the rim 1, stress concentration is partially generated, resulting in the same result as when the groove cell is used, and a particularly remarkable effect is obtained. It is not possible.

  Further, as described above, since the solidified silicone resin 2 has the thickest central portion, the entire outer peripheral surface 3a of the lens 3 is not wrapped, and stress concentrates on the top ridge portion 3b. In particular, the effect of preventing damage to the polarizing lens cannot be sufficiently obtained. In addition, if the both end portions of the thin side of the silicone resin 2 are peeled off, the holding performance by the rim 1 of this portion will be extremely lowered, and a narrow space will be formed in this portion and dust will easily stay. As a result, the beauty and merchantability will be reduced.

  As described above, the glasses configured by the conventional method leave a problem in the degree of perfection, but the durability is not different from the glasses configured by the method using the groove cell. That is, when the silicone resin 2 is solidified, the solution diverges and the surface thereof is in a dry state, and the adhesion between the inner groove 1a of the rim 1 and the outer peripheral surface 3a of the lens 3 is extremely reduced. Thus, the holding performance of the lens 3 by the rim 1 is lowered, and in the case of a drop impact, vibration, or a cold region, the lens 3 is easily dropped due to contraction of the lens 3 due to a decrease in the outside air temperature.

  Such problems are less likely to occur in normal living environments at normal temperatures, but the effects of cold air and vibration are significant in severe environmental conditions such as winter sports and car rally competitions where contact lenses cannot be worn. The probability of a lens dropout accident also increased, putting a psychological burden on the competitors. As is well known, lenses prepared on the basis of visual acuity diagnosis should never be subject to dropout or damage in such an environment, and the lens holding performance by the rim should be assured. It must be reliable.

  The present invention has been made in view of such conventional problems, and has solved the above problems by means described below. That is, according to the first aspect of the present invention, the eyeglasses have a lens mounted in the inner groove of the rim, and the non-curable liquid surface treatment agent is applied to the entire outer peripheral surface of the lens and / or the entire inner peripheral surface of the rim. Thus, a base treatment agent layer is formed, and a soft cured polymer layer formed by applying a room temperature curable liquid polymer on the base treatment agent layer and curing at room temperature is formed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the room temperature curable liquid polymer is a room temperature curable liquid silicone rubber.

  In the invention of claim 3, in the invention of claim 1 or claim 2, the non-curable liquid ground treatment agent is prepared mainly with a hydrophilic liquid and a lipophilic liquid that can be mixed. To.

  In the invention according to claim 4, (1) a non-curable liquid surface treatment agent is applied to the entire outer peripheral surface of the lens to form a surface treatment agent layer, and (2) the entire inner peripheral surface of the inner groove of the rim is The base treatment agent for a rim in which a base treatment agent layer is formed by applying a non-curable liquid ground treatment agent, and (3) the base treatment agent layer is formed on the entire inner peripheral surface of the inner groove of the rim in step (2). A predetermined amount of a room temperature curable liquid polymer is applied on the layer, and (4) in the inner groove of the rim where a predetermined amount of the room temperature curable liquid polymer is applied in step (3), the entire outer peripheral surface in step (1) is non-curable. A lens having a surface treatment agent layer formed by applying a liquid surface treatment agent is mounted, and after mounting the lens in the inner groove of the rim in (5) step (3), the room temperature curable liquid polymer is applied at room temperature for a predetermined time. Curing is performed to form a soft cured polymer layer, and the glasses according to claim 1 or 2 are manufactured.

  The eyeglasses completed by the present invention have a significantly improved lens holding performance by the rim, and can reliably prevent the lens from falling off from the rim even in an environment affected by vibration, impact, temperature change, etc. The above reliability and commercial value can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected and demonstrated to the part same as the conventional structure.

  FIG. 1 shows a manufacturing process of eyeglasses according to the present invention. FIG. 1 is a cross-sectional view of a portion where a lens 3 is mounted in an inner groove 1a of a rim 1, and shows the manufacturing process in order. In FIG. 1 (A), an inner groove 1a is formed on the entire inner periphery of the rim 1 by an inclined surface having a downward gradient from the outer periphery toward the center. On the other hand, on the entire outer periphery of the lens 3, an outer peripheral surface 3a is formed by an inclined surface having an upward gradient from the outer periphery toward the center so as to match the shape of the inner groove 1a. The inner groove 1a of the rim is not limited to the cross-sectional shape, and may be formed in an arc shape, for example.

  In the present invention, the non-curable liquid surface treatment agent is applied to the inner groove 1a of the rim 1 and the outer peripheral surface 3a of the lens 3 thus formed to form the surface treatment agent layers 4 and 5. The non-curable liquid surface treatment agent for forming the surface treatment agent layers 4 and 5 includes, for example, isopropyl alcohol having hydrophilicity and toluene having lipophilicity (or ethylbenzene or the like) as a main component. In this way, the wet adhesion to various materials is improved. In other words, since the glasses frame is made of different materials such as metal, synthetic resin, glass, etc., a single solution that has hydrophilicity and lipophilicity makes it possible to wet and adhere to any material. I was able to demonstrate it.

  By applying the non-curable liquid surface treatment agent thus prepared, the surface treatment agent layers 4 and 5 formed on the inner groove 1a of the rim 1 and the outer peripheral surface 3a of the lens 3 are non-curable liquid. For this reason, the state shown in FIG. Next, in order to form the flexible cured polymer layer 2 on the surface treatment agent layers 4 and 5 (in this embodiment, on the inner groove 1a of the rim 1), a room temperature curable liquid polymer is applied. The room temperature curable liquid polymer generally employs a room temperature curable liquid silicone rubber, which is also adopted in the present embodiment, but is not limited thereto.

  Before the applied room temperature curable liquid polymer is solidified, as shown in FIG. 1C, the outer peripheral surface 3a of the lens 3 is aligned with the inner groove 1a of the rim 1, and the rim lock screw is tightened to attach the lens 3. As a result, the room temperature curable liquid polymer is sealed between the rim 1 and the lens 3. At this time, since the enclosed room-temperature curable liquid polymer is in a liquid state, it matches the gap formed by the inner groove 1a of the rim 1 and the outer peripheral surface 3a of the lens 3, so that the enclosed room-temperature curing is performed. Even after the mold liquid polymer is solidified, no stress concentration occurs on the outer peripheral surface 3 a of the lens 3.

  When the rim lock screw is tightened, excess room temperature curable liquid polymer leaks from the end of the inner groove 1a of the rim 1 and the end of the outer peripheral surface 3a of the lens 3 as shown in FIG. Therefore, when the leaked room temperature curable liquid polymer is wiped off and the end shape is adjusted as shown in FIG. 1 (D), the sealing portions 2a and 2b are formed and the entire outer peripheral surface 3a of the lens 3 is formed. It will be in the state covered.

  By leaving the spectacles completed after the above steps for a predetermined time, the room temperature curable liquid polymer is gradually solidified, and the flexible cured polymer layer 2 is formed. At this time, the end portion of the inner groove 1a of the rim 1 and the end portion of the outer peripheral surface 3a of the lens 3 are completely sealed by the sealing portions 2a and 2b. Therefore, the inflow of air into the gap between the inner groove 1a of the rim 1 and the outer peripheral surface 3a of the lens 3 can be prevented, and an airtight state (air tight) effect can be obtained.

  In the eyeglasses of the present invention thus completed, the ground treatment agent layer 4 in the inner groove 1a of the rim 1 wets and adheres to the flexible cured polymer layer 2, while the ground treatment agent layer 5 adheres to the outer peripheral surface 3a of the lens 3. By being wet-attached to the flexible cured polymer layer 2, a structural bridge is formed, and adhesion is significantly improved as compared to a state where the dry surface is simply in surface contact. In addition, according to the present invention, the sealing portions 2a and 2b can maintain an airtight state. For example, even if the lens contracts due to low temperature, the surface treatment agent layers 4 and 5 are not affected. Inflow of air can be prevented, and the high holding performance of the lens 3 by the rim 1 is stably maintained.

  As described above in detail, according to the present invention, since the load due to the stress concentration caused by the flexible cured polymer layer 2 is not applied to the lens 3, damage can be prevented even when a polarizing lens is attached. can do. Further, the sealing portions 2a and 2b can protect the lens end portion and prevent the intrusion of dust, so that a highly reliable product that can be used under any environmental conditions can be obtained.

  According to the present invention, since the lens is mounted before the room temperature curable liquid polymer is solidified, the room temperature curing is performed in the gap between the rim and the lens even in a method of fitting the lens to the rim by applying a forced pressure. The mold liquid polymer can be effectively enclosed, and the intended purpose can be achieved.

It is a figure which shows the manufacture process of the spectacles by this invention. It is a figure which shows the structure of a spectacles frame. It is sectional drawing of the state which mounted | wore the lens with the lens using the groove cell. It is a figure which shows the manufacture process of the spectacles by the conventional method.

Explanation of symbols

A ... Eyeglass frame 1 .... Rim 1a ... Inner groove 2 .... Flexible cured polymer layer 2a ... 2b Sealing 3 .... Lens 3a ... Outer peripheral surface 4.5 ... Undercoat layer

Claims (4)

  Glasses having a lens mounted in the inner groove of the rim, wherein a non-curable liquid surface treatment agent is applied to the entire outer peripheral surface of the lens and / or the entire inner peripheral surface of the rim to form a surface treatment agent layer. And a flexible cured polymer layer formed by applying a room temperature curable liquid polymer on the surface treatment agent layer and curing at room temperature.   The glasses according to claim 1, wherein the room temperature curable liquid polymer is a room temperature curable liquid silicone rubber.   3. The spectacles according to claim 1 or 2, wherein the non-curable liquid surface treatment agent is prepared by using a hydrophilic liquid and a lipophilic liquid which can be mixed as main components. 3. The method for manufacturing eyeglasses according to claim 1, further comprising the following steps (1) to (5).
(1) A non-curable liquid surface treatment agent is applied to the entire outer peripheral surface of the lens to form a surface treatment agent layer.
(2) The non-curable liquid surface treatment agent is applied to the entire inner peripheral surface of the inner groove of the rim to form a surface treatment agent layer.
(3) A predetermined amount of a room temperature curable liquid polymer is applied onto the rim surface treatment agent layer in which the surface treatment agent layer is formed on the entire inner peripheral surface of the inner groove of the rim in step (2).
(4) Form a surface treatment agent layer by applying a non-curable liquid surface treatment agent to the entire outer peripheral surface in step (1) on the inner groove of the rim coated with a predetermined amount of room temperature curable liquid polymer in step (3). Wear the correct lens.
(5) After attaching the lens to the inner groove of the rim in step (3), the room temperature curable liquid polymer is cured at room temperature for a predetermined time to form a flexible cured polymer layer.

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