JP2008216754A - Auxiliary spectacles and forming die device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide auxiliary spectacles which never cause a decrease in functionality. <P>SOLUTION: The auxiliary spectacles detachably fitted to a front part of spectacles has a beltlike coupling portion 12 coupling right and left lenses 11 and 11 of the auxiliary spectacles, and the coupling portion 12 is disposed closer to the front part 22 than to the right and left lenses 11 and 12 to cover a light incident gap between the right and left lenses 11 and 11. The right and left lenses 11 and 11 and coupling part 12 are preferably formed of a polarizing sheet in one body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to auxiliary spectacles that are detachably attached to a front portion of spectacles, and a mold apparatus for manufacturing the auxiliary spectacles.

Auxiliary glasses that are detachably attached to the front portion of the glasses are known. Such auxiliary glasses can be easily added with other functions such as a polarization function and an anti-glare function to the worn glasses, and thus are favored by many users (for example, see Patent Documents 1 to 4). ).
JP-A-9-281451 JP 2005-345880 A JP 2003-241149 A Utility Model Registration No. 3116294

  However, in the conventional auxiliary glasses as described above, the lens for attaching the auxiliary glasses to the front portion of the glasses is detachably attached to the left and right lenses separately or the connecting portion of the left and right lenses. Is located within the same curved surface as the curved surface of the lens, so when it is attached to the spectacles, sunlight or reflected light enters the eye from between the left and right lenses or between the lens and the front portion of the spectacles. However, the polarizing function and the antiglare function may be impaired.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide auxiliary glasses that do not cause deterioration of functions such as a polarization function and an antiglare function, and a mold apparatus for forming the auxiliary glasses. .

  In order to achieve the object of the present invention, the invention according to claim 1 is the auxiliary spectacles detachably attached to the front part of the spectacles. Connected integrally, and this connecting part is arranged at a position closer to the front part than the left and right spherical lenses, and is configured as auxiliary glasses that cover the light incident gap between the left and right lenses by the connecting part It is.

When auxiliary glasses are attached to the outside of the front portion, the radius of curvature of the lenses of the auxiliary glasses may be the same as or smaller than the radius of curvature of the lenses of the glasses. In addition, what is necessary is just to attach to a user's eyelashes, when attaching inside.
By adopting spherical lenses as the left and right lenses and connecting the connecting part to the front part of the glasses, there is almost no gap between the peripheral edge (especially the upper edge) of the front part of the glasses and the left and right lenses of the auxiliary glasses. Without it, it is possible to prevent external light from entering the eye from the gap between the left and right lenses, and to effectively suppress functional degradation such as the polarizing function and the antiglare function of the auxiliary glasses.

In addition, since the connecting portion can be formed at a position close to the front portion of the spectacles without requiring special processing, it is possible to obtain auxiliary spectacles having a higher effect of suppressing the function deterioration.
In particular, by making the radius of curvature of the lenses of the auxiliary glasses substantially the same as the radius of curvature of the lenses of the glasses, the sense of unity between the glasses and the auxiliary glasses can be enhanced. Furthermore, when attaching auxiliary glasses to the inside (eyeball side) of the front part, the problem is that the inner surface of the lens of auxiliary glasses attached to the inside and the user's eyelashes easily come into contact with each other. By making the curvature radii substantially the same, it is possible to secure a sufficient distance between the inner surface of the lens of the auxiliary glasses and the user's eyelashes.

In the present invention, when the left and right lenses are polarizing lenses, the left and right lenses and the connecting portion may be integrally formed from a sheet material having a polarizing function and an antiglare function. By doing so, it is possible to obtain auxiliary glasses in which the polarization axes of the left and right lenses coincide.
The auxiliary glasses of the present invention may not have a flip-up mechanism, but may have a flip-up mechanism as described in claim 3.
In this case, as described in claim 4, it is preferable that the central axis of the flip-up rotation is positioned on the extension of the surface of the connecting portion. By doing in this way, even when auxiliary glasses are held at an arbitrary flip-up position, the external light can be effectively blocked by the connecting portion.

When the auxiliary glasses are attached inside the front portion, the left and right spherical lenses may be the same size as the left and right lenses of the glasses or may be larger than the glasses lens. The left and right spherical lenses may be formed smaller than the left and right lenses of the glasses. According to a sixth aspect of the present invention, when the auxiliary glasses are attached to the inside of the front portion, the mounting means for mounting the auxiliary glasses on the front portion is a support leg that supports a nose pad of the glasses. And an engagement recess formed on the spherical lens and engaged with the support leg.
According to this configuration, since the mounting means can be formed without using any parts, it is possible to manufacture auxiliary glasses at a low cost and to obtain a mounting means that is less likely to fail. According to a seventh aspect of the present invention, the mounting means has an engagement recess that engages with the eyeglass or temple of the glasses at both ends of the spherical lens, so that the above effect is maintained. The auxiliary glasses can be stably attached to the glasses.

The auxiliary glasses having the above-described configuration can be molded entirely or principally by the mold apparatus according to claim 8. A molding apparatus according to an eighth aspect is a molding apparatus for spherical lenses used in the auxiliary glasses according to any one of the first to fourth aspects. A lower mold having one concave portion and a second concave portion for connecting the left and right first concave portions in communication, and a convex portion corresponding to the first concave portion and the second concave portion; And an upper mold for pressing and molding the sheet-like material.
According to this mold apparatus, the left and right spherical lenses of the auxiliary glasses of the present invention and the connecting portion can be molded simultaneously, and the auxiliary glasses of the present invention can be manufactured at low cost.

According to the present invention, since the external light that is about to enter from the gap between the lenses of the auxiliary glasses is effectively blocked by the connecting portion, the polarization function, the antiglare function, and the like are not deteriorated.
When the left and right lenses are formed as spherical lenses, the gap between the peripheral edge (especially the upper edge) of the front portion of the glasses and the auxiliary glasses can be further reduced. In addition, even when the auxiliary glasses are attached to the inside of the front portion, it is possible to ensure a sufficient gap between the user's eyelashes and the lenses of the auxiliary glasses. Furthermore, if the left and right lenses and the connecting part are formed integrally, the auxiliary glasses can be made durable. However, especially when the left and right lenses are polarization lenses, the polarization axes coincide with each other. There is an effect that can be made.

Hereinafter, preferred embodiments of auxiliary glasses of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an embodiment of auxiliary glasses according to the present invention, in which (a) is a plan view, (b) is a front view thereof, and (c) is a side view thereof.

As shown in FIG. 1, the auxiliary spectacles 1 include left and right spherical lenses 11 and 11 formed of an antiglare lens, a polarizing lens, and the like, and a strip-shaped connecting portion 12 that connects the left and right spherical lenses 11 and 11. And a mounting tool 13 for detachably mounting the auxiliary glasses 1 on the glasses.
The spherical lenses 11 and 11 can be functional lenses such as an antiglare lens and a polarizing lens. When the auxiliary spectacles 1 are attached to the outside of the front part of the spectacles as in this embodiment, it is preferable that the radius of curvature of the spherical lenses 11 is equal to or slightly smaller than that of the spectacle lens.
The left and right spherical lenses 11 and 11 and the connecting portion 12 can be integrally formed simultaneously from a resin sheet for lenses by press molding using, for example, a molding device described later. Thus, the auxiliary spectacles 1 in which the left and right spherical lenses 11 and 11 and the connecting portion 12 are integrally formed have a feature that they are structurally strong and not easily broken. In particular, when the spherical lenses 11 and 11 are polarization lenses, there is an advantage that the polarization axes of the left and right spherical lenses 11 and 11 can be matched.

As shown in FIG. 1A, the connecting portion 12 is located closer to the front part of the spectacles than the left and right spherical lenses 11 and 11 and fills the light incident gap between the left and right spherical lenses 11 and 11. ing.
When the left and right spherical lenses 11 and 11 and the connecting portion 12 are integrally formed by press molding or the like as in the auxiliary glasses 1 of this embodiment, the connecting portion 12 is in contrast to the left and right spherical lenses 11 and 11. Forming the mold in advance so as to be placed in a recessed position (position close to the front portion of the glasses) eliminates the need for post-processing and is advantageous in terms of processing cost.

  The mounting tool 13 of this embodiment is a known one disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-2861 and Japanese Patent Application Laid-Open No. 2003-241149, and the left and right spherical lenses 11 are attached with bolts or the like. A mounting bar 130, elastic legs 131 extending left and right along the upper edge of the front portion of the glasses, hooks 132 formed at both ends of the elastic leg 131 and hooked on the upper edge of the front portion, and elastic legs 131 Elastic legs 133 extending downward in a circular arc shape from the vicinity of both ends of the eyeglasses, a hook 134 formed at the lower end of the elastic legs 133, and the center of the lens mounting bar 130. A central portion is inserted, and a support tube 135 that rotatably supports the elastic leg 131 is provided. The support tube 135 supports the elastic leg 131 so as to be able to stop at an arbitrary rotation angle position, and thereby the spherical lenses 11 and 11 can be held at an arbitrary flip-up position.

2A and 2B are diagrams showing a state in which auxiliary glasses having the above-described configuration are attached to the glasses. FIG. 2A is a plan view thereof, FIG. 2B is a front view thereof, and FIG. 2C is an XX of the auxiliary glasses of FIG. FIG.
In FIG. 2, reference numeral 2 denotes full-rim glasses, reference numeral 22 denotes a front part into which the lenses 21 and 21 are fitted, reference numeral 23 denotes a wisdom attached to both sides of the front part 22, and reference numeral 24 denotes a nose pad.
The auxiliary spectacles 1 are attached to the spectacles 2 by hooking the hooks 132 and the hooks 134 (see FIG. 1C) of the mounting tool 13 to the front portion 22 of the spectacles 2.

Since the connecting portion 12 is formed between the spherical lenses 11 and 11 at a position close to the frame portion 22, the inconvenience that external light enters the eye from the gap between the spherical lenses 11 and 11 is effective. It is possible to prevent deterioration of the functions of the spherical lenses 11 and 11 such as a polarization function and an antiglare function.
Furthermore, in this embodiment, since the left and right lenses 11 of the auxiliary glasses 1 are spherical, the upper edge of the front portion 22 of the glasses 2 and the top of the auxiliary glasses 1 as shown in FIG. The gap between the edges is covered by the left and right spherical lenses 11 and 11, and the inconvenience that external light enters the eye from the gap can also be prevented.

The vertical width of the band-shaped connecting portion 12 is determined in consideration of the design of the auxiliary glasses 1 and the light shielding property of the connecting portion 12, but the general auxiliary glasses 1 is assumed to be within a range of about 1 cm to 2 cm. Good. Of course, from the viewpoint of the design of the auxiliary glasses 1 and the light shielding property of the connecting portion 12, it may be outside the above range.
Further, it is preferable that the center axis of the flip-up rotation is located on the extended surface of the connecting portion 12. By doing so, as shown in FIG. 2C, the gap between the front portion 22 and the connecting portion 12 does not change even when the spherical lenses 11 and 11 are flipped up and rotated. Therefore, even if the spherical lenses 11 and 11 are stopped at an arbitrary flip-up position, the polarization function and the antiglare function of the spherical lenses 11 and 11 are not impaired.

Next, another embodiment of the auxiliary glasses of the present invention will be described with reference to FIGS.
FIG. 3 is a side sectional view showing an aspect in which the auxiliary glasses 1 are attached to the inside of the front portion 2 of the glasses 2 according to another embodiment of the auxiliary glasses of the present invention, and FIG. It is a figure explaining the attachment means attached detachably inside.
In the above-described embodiment, the case where the auxiliary glasses 1 are detachably attached to the outside of the front portion of the glasses 2 has been described. However, in this embodiment, as shown in FIG. The glasses 1 are detachably attached.

In this case, in order to ensure as large a gap as possible between the eyelash Ea of the user's eye E and the spherical lenses 11, 11 of the auxiliary glasses 1, the radius of curvature of the spherical lenses 11, 11 and the lenses of the glasses 2. The curvature radii of 21 and 21 should be the same.
Further, the size of the spherical lens 11 when the auxiliary glasses 1 are attached to the inside may be substantially the same size as the lenses 21 and 21 of the glasses 2 as shown in FIG. As described above, the lenses 21 and 21 of the glasses 2 may be smaller than the lenses 21 and 21.

The auxiliary spectacles 1 can be attached to the inside of the front portion of the spectacles 2 by using the mounting tool 13 as shown in the previous embodiment, or by using a mounting means as shown in FIG.
4A and 4B relate to the mounting means of this embodiment, where FIG. 4A is a front view thereof and FIG. 4B is a plan view thereof.
As shown in FIG. 4, the mounting means of this embodiment engages with the support legs 24 a and 24 a of the nose pads 24 and 24 between the left and right spherical lenses 11 and 11 of the auxiliary glasses 1 and the connecting portion 12. Engaging recesses 11a, 11a are formed. The auxiliary glasses 1 are detachably attached to the front portion of the glasses 2 by inserting the engaging recesses 11a and 11a into the base portions of the support legs 24a and 24a.

Since the support legs 24a, 24a formed of a metal such as titanium are usually formed in a curved shape as shown in FIG. 4B, the engagement recesses 11a, By engaging 11a, the auxiliary glasses 1 are sandwiched between the support legs 24a and 24a and the left and right lenses 21 and 21 of the glasses 2 and are stably held.
Thus, by configuring the mounting means from the engaging recesses 11a, 11a, not only the auxiliary glasses 1 can be easily attached to and detached from the glasses 2, but also other parts for forming the mounting means are unnecessary, and Since the engaging recesses 11a and 11a can be formed simultaneously in the step of forming the auxiliary glasses 2, the auxiliary glasses 1 can be manufactured at a low cost.

5 and 6 are diagrams for explaining other embodiments of the auxiliary glasses.
FIG. 5A is a front view of the auxiliary glasses of this embodiment, and FIG. 5B is a front view showing the state in which the auxiliary glasses of FIG. 5A are attached to the inside of the glasses (viewed from the outside of the glasses). is there. 6A is a bottom view of the auxiliary glasses 3, FIG. 6B is a top view, and FIG. 6C is a right side view.
The auxiliary glasses 3 of this embodiment are formed slightly larger than the glasses 2, and at least the left and right side portions of the auxiliary glasses 3 reach the edge 23 of the glasses 2. Similar to the auxiliary glasses 1 in FIG. 4, the first engagement between the left and right spherical lenses 31, 31 of the auxiliary glasses 3 and the connecting portion 32 is engaged with the support legs 24 a, 24 a of the nose pads 24, 24. Concave portions 331 and 331 are formed. Then, the first engaging recesses 331 and 331 are inserted into and engaged with the bases of the support legs 24a and 24a.

In addition, second engaging recesses 332 and 332 that engage with the wisdom 23 of the glasses 2 are formed at both ends of the spherical lenses 31 and 31. Then, the second engaging recesses 332 and 332 are inserted into and engaged with the wisdom 23 and 23.
In this embodiment, the first engaging recesses 331 and 331 and the second engaging recesses 332 and 332 constitute mounting means for detachably mounting the auxiliary glasses 3 on the glasses 2.
According to the mounting means of this embodiment, the auxiliary glasses 3 can be mounted on the glasses 2 more stably than the mounting means (engaging recesses 11a, 11a) of the previous embodiment. Moreover, since the 1st engagement recessed part 331,331 and the 2nd engagement recessed part 332,332 can be formed simultaneously at the process of shape | molding the auxiliary spectacles 2, it is advantageous also in cost.

Next, a molding apparatus for manufacturing auxiliary glasses having the above-described configuration will be described.
7A and 7B are diagrams showing an example of a mold that constitutes the mold apparatus. FIG. 7A is a plan view of the mold (lower mold), and FIG. 7B is a YY cross section of FIG.
The lower mold 5 is formed between two first recesses 51, 51 for forming the left and right spherical lenses 11, 11 of the auxiliary glasses 1 and the first recesses 51, 51 to form a connecting part 12. And a second recess 52.

  In addition, as shown in FIG. 8, the upper mold | type is formed with the convex part 61 of the shape corresponding to the 1st recessed parts 51 and 51 and the 2nd recessed part 52 of the lower mold | type 5, and this convex part 61 and 1st By fitting the recesses 51, 51 and the second recess 52, the sheet material S such as a polarizing film is formed into the shape of the spherical lenses 11, 11 and the connecting part 12 of the auxiliary glasses 1.

FIG. 8 is a diagram for explaining a process of simultaneously molding the spherical lenses 11 and 11 and the connecting portion 12 using the molding die shown in FIG.
As shown in (a), the sheet material S is arranged between the lower mold 5 and the upper mold 6, and as shown in (b), the upper mold 6 is lowered and the lower mold 5 and the upper mold 6 make a sheet. The material S is pressurized while being heated, and the sheet material S is formed into the shape of the spherical lenses 11 and 11 and the connecting portion 12 of the auxiliary glasses 1.
After cooling and solidifying the sheet material S, the lower mold 5 and the upper mold 6 are opened, and a molded body S ′ as shown in FIG.
In the molded body S ′ thus molded, the spherical lenses 11 and 11 are formed integrally with the connecting portion 12 at the same time, so that the manufacturing cost is low. In particular, the spherical lenses 11 and 11 are polarization lenses. In this case, there is an advantage that the polarization axes of the left and right spherical lenses 11, 11 can be matched.

Although a preferred embodiment of the present invention has been described, the present invention is not limited to the above-described embodiment.
For example, in the above description, the flip-up type auxiliary glasses have been described. However, the present invention is not limited to the flip-up type and can be applied to all types of auxiliary glasses.
In the above description, a spherical lens is described as an example, but a curved lens having a curved flat plate may be used.
Furthermore, in the above description, the left and right lenses and the connecting portion are formed by integral molding such as a press. However, the connecting portion may be attached to the left and right lenses by adhesion, bolts, or the like.
Moreover, about the auxiliary spectacles 3 demonstrated referring FIG.5, 6, you may make it the 2nd engagement recessed part 332 engage with a temple.

  The present invention can also be applied to auxiliary glasses that are not flip-up type as long as they are detachable from the front part of the glasses. Further, the present invention is not limited to the polarization function and the antiglare function, and can be applied to auxiliary glasses having other functions.

1A is a plan view, FIG. 2B is a front view thereof, and FIG. 3C is a side view thereof according to an embodiment of auxiliary glasses of the present invention. It is a figure which shows the state which mounted | wore the spectacles with the auxiliary | assistant glasses of FIG. 1, (a) is the top view, (b) is the front view, FIG.2 (c) is (b) for demonstrating the effect | action of a connection part. FIG. It is a side view concerning the other embodiment of the auxiliary glasses of the present invention, showing a mode in which the auxiliary glasses are attached to the inside of the front portion of the glasses. It is a figure explaining the attachment means which attaches auxiliary spectacles to the inner side of a front part so that attachment or detachment is possible. It is a figure explaining other embodiment of auxiliary glasses, (a) is a front view of auxiliary glasses of this embodiment, (b) is a front view showing the state where auxiliary glasses of (a) were attached to the inside of glasses ( It is the figure seen from the outer side of spectacles). FIG. 6 is a bottom view, a top view, and a right side view of the auxiliary glasses of FIG. 5. It is a figure which shows an example of the shaping | molding die which comprises a shaping | molding die apparatus, (a) is a top view of a shaping | molding die (lower mold), (b) is a YY cross section of (a). It is a figure explaining the process of shape | molding simultaneously a spherical lens and a connection part using the shaping | molding die shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Auxiliary spectacles 11 Spherical lens 12 Connecting part 13 Mounting tool 130 Lens mounting bar 131 Elastic leg 132 Hook 133 Elastic leg 134 Hook 135 Support tube 2 Glasses 21 Lens 22 Front part 23 Sat 24 Nose pad 24a Support leg 3 Auxiliary glasses 31 Spherical lens 32 connecting portion 331 first engaging recess leg 332 second engaging recess

Claims (8)

In auxiliary glasses that are detachably attached to the front part of the glasses,
The left and right spherical lenses formed in a partial spherical shape are integrally connected by a band-shaped connecting portion, and the connecting portion is disposed at a position closer to the front portion than the left and right spherical lenses,
Covering the light incident gap between the left and right lenses by the connecting portion;
Auxiliary glasses characterized by. The auxiliary glasses according to claim 1, wherein the left and right lenses and the connecting portion are integrally formed from a polarizing sheet. The auxiliary glasses according to claim 1 or 2, wherein the auxiliary glasses have a flip-up mechanism. 4. The auxiliary glasses according to claim 3, wherein a central axis of the flip-up rotation is positioned in a plane including the connecting portion. The auxiliary glasses according to any one of claims 1 to 4, wherein when the auxiliary glasses are attached inside the front portion, the left and right spherical lenses are formed smaller than the left and right lenses of the glasses. When attaching the auxiliary glasses to the inside of the front portion, a mounting means for mounting the auxiliary glasses on the front portion is formed on a support leg that supports a nose pad of the glasses and the spherical lens, and the support leg The auxiliary spectacles according to claim 1, further comprising an engaging recess that engages with the auxiliary glasses. The auxiliary spectacles according to claim 6, wherein the spherical lenses have engaging recesses that engage with the wisdom or temple of the glasses. A molding device for a spherical lens used in the auxiliary glasses according to any one of claims 1 to 7,
A lower mold having left and right first recesses for forming left and right spherical lenses, and a second recess for connecting the left and right first recesses in a continuous manner;
An upper die having a convex portion corresponding to the first concave portion and the second concave portion, and pressurizing and molding a sheet-like material in cooperation with the lower die;
A mold apparatus characterized by comprising:

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