JP2986314B2 - Eye mirror - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-lens lens (left and right integrated lens) which can be used as sunglasses, safety glasses and the like.
The present invention relates to spectacles including

[0002]

2. Description of the Related Art Hitherto, sunglasses having a single-lens lens as shown in FIGS. 16 and 17 have been generally used (see, for example, US Pat. No. 4,824,233).
The sunglasses 41 include a single transparent plate-shaped lens 42 having a curved surface, and a single frame 43 having a length covering the entire width of the upper end edge of the lens 42 and fitted and fixed to the lens.
And a crane 44 which is foldably and detachably attached to both left and right outer ends of the frame 43, and a substantially inverted V-shaped nose pad fitting portion 45 is provided below the center bridge of the lens 42,
The nose pad 46 is fitted.

[0003] In some cases, an inner frame provided with a prescription lens, a light blocking lens, and the like is attached to the back of the center bridge of the lens 42 via a suction tool such as a suction cup.

[0004]

Since the conventional sunglasses have a frame 43 having a length extending over the entire width of the upper end edge of the lens 42, the wearer's head having various shapes and sizes varies. There was a problem that it was difficult to fit along the part and it was not possible to fit it perfectly. The present invention has been made by paying attention to the actual situation as described above, and an object of the present invention is to provide a single-lens capable of fitting the wearer's head with a moderate softness by utilizing the elasticity of the lens. To provide glasses of the type.

[0005]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, the present invention relates to a single-lens lens made of impact-resistant plastic such as polycarbonate, a pair of left and right frames fixed to upper edges of both ends of the lens, and a pair of right and left foldably attached to outer ends of both frames. The upper ends of the left and right sides of the lens are a pair of left and right frame fixing portions to which a pair of left and right frames are fixed, respectively, and each of the frame fixing portions projects toward the left and right sides. After forming at the left and right ends of the lens, as it moves downward from the upper ends of the left and right sides of the lens ,
A notch of a concave shape is provided so as to return to the left and right outer sides, and a pair of left and right frames are fixed to the pair of left and right frame fixing portions with screws, respectively, and the left and right central side of each frame fixing portion has a wide field of view. So that the lower edge of the fixed portion of the pair of left and right frames with the lens gradually rises from the left and right center sides of each frame toward the left and right center direction of the lens.
It is characterized by being inclined so as to shift .

[0006]

According to the present invention, since the frame of the single-lens lens is fixed to both ends, its elasticity is not impaired and a proper softness can be ensured, and the lens fits perfectly to the wearer's head.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes sunglasses, a transparent and single-lens lens 2 having an appropriate curved surface, for example, a 6-curved spherical surface, and having flexibility and elasticity. It is composed of a pair of left and right frames 3, 3, which are fixed, and a pair of right and left crane 4, 4, which are foldably attached to the outer ends of both frames 3, 3, respectively. The single-lens lens 2 is made of an impact-resistant plastic such as polycarbonate or ABS resin, and polycarbonate is most preferable.

The spherical surface of the six curves is a spherical surface whose radius of curvature R1 (mm) of the spherical surface (front surface) is set by R1 = (N-1) × 100 / D [D = 6]. Here, N is the refractive index of the material, and about 1.586 in the case of polycarbonate.
It is. At the lower part of the center bridge of the lens 2, a nose pad fitting portion 5 is formed in a substantially inverted V-shaped notch, and
6 can be removably fitted to the upper edge 2A of the central bridge, so that a sweat-absorbing part 7 or a visor part 8 (see FIGS. 8 and 9) can be removably fitted. It has become.

A screw hole (not shown) is provided at the upper end on both the left and right sides of the lens 2, and the frames 3, 3 are fixed by screws 9. A cut-out portion 32 is formed at the left and right end portions of the lens 2 below the fixed portions of the frames 3 and 3, and the deformation of the lens 2 is suppressed by the frames 3 and 3 fixed to the lens 2. As much as possible. The height of the fixed portion between each of the frames 3 and 3 and the lens 2 is gradually increased from the left and right central sides toward both the left and right sides. To improve the holding strength.

[0010] The two frames 3, 3 are provided with the lens 2
The width (length) W2 of the fixed portion is designed to be 8 to 30% of the width (total length) W1 of the upper edge portion of the lens 2 as shown in FIG. If the fixed portion width W2 is less than 8% of the lens upper edge width W1, the holding strength of the lens 2 cannot be secured, and if the fixed portion width W2 exceeds 30% of the lens upper edge width W1, the wearer cannot wear the lens. In addition, the front field of view is narrowed, and the flexibility of the lens 2 is limited, so that an appropriate softness cannot be ensured. Therefore, the above range of 8 to 30% is optimal. Further, it is preferable that the maximum height h of the fixed portion between the frame 3 and the lens 2 is designed to be in the range of 3 mm or more and 15 mm or less. Maximum height
If h is less than 3 mm, the holding strength of the lens 2 cannot be secured, and if h is more than 15 mm, the wearer's forward vision is hindered.

On the rear side of the outer ends of the frames 3, 3, crane mounting portions 10, 10 are respectively provided so as to project therefrom. Crane
4, 4 front end mounting portions 12 are externally fitted to sandwich the crane mounting portion 10 from above and below, and a shaft portion 13 projecting from the upper and lower opposing surfaces of the front end mounting portion 12 is provided with the engagement shaft hole 11. The crane 4, 4 is in contact with the outer end 3A of the frame 3 so that the spread angle is restricted so that the crane 4, 4 does not rotate outward any more, but is folded inwardly. It is free. The crane 4,
It is preferable that 4 has flexibility and elasticity.

As shown in FIGS. 2 to 4, the crane 4, 4 is provided with a locking ridge 14 penetrating in the left-right direction from a substantially central portion in the length direction to the rear (ear hook side). Non-slip wearing slot 15
A non-slip member 16 made of an elastic material such as rubber is fitted, and a substantially hemispherical projection 17 is provided on the opposite inner side surface of the non-slip device 16, that is, the surface in contact with the wearer's head. The projection 17 protrudes from the facing inner surface 4A of the crane 4,4. Also,
The lens 2 is a spherical surface, and together with the flexible crane 4,4, when the distance between the right and left crane 4,4 increases when wearing spectacles, the horizontal radius of curvature r1 of the front surface of the spherical lens 2 increases accordingly, The elasticity of the lens 2 and the crane 4, 4 wraps the head softly.

That is, in the present embodiment, the distance between the rear ends of the left and right vines 4, 4 in a state where the vines 4, 4 before wearing the glasses are maximally expanded and naturally settled is 1 cm. In this state, the radius of curvature of the front surface of the lens 2 in the horizontal direction is defined as r1, and the distance between the rear ends of the right and left cranes 4, 4 is expanded against the elasticity of the lens 2 and the cranes 4, 4 so that the distance is l + 3 cm. When the radius of curvature of the front surface of the lens 2 in the horizontal direction is r3, the relationship of r1.times.1.03.ltoreq.r3.ltoreq.1.35 is satisfied. In this case, when the radius of curvature r3 after expansion is less than r1 × 1.03, the elasticity (spring force) surrounding the head almost depends on the elasticity of the crane 4,4, and the wearer with a large head In the case of, the frontal crane is 4,
4 and is cramped, and the crane mounting portion 10 of the frame 3 may be damaged. On the other hand, if the radius of curvature r3 after the expansion exceeds r1 × 1.35, the elasticity (spring force) sandwiching the head will be insufficient.

As shown in FIGS. 5 to 7, the nose pad 6 includes a holding member 6A made of hard plastic and a nose pad 6B made of soft rubber, which has a substantially V-shape when viewed from the front. An engaging portion 19 having an inner frame engaging projection 18 on the front surface is integrally provided at an upper portion of the center of the body 6A, and except for the engaging portion 19, an engaging portion 19 is provided on an upper peripheral surface of the holding body 6A. A fitting groove 20 is recessed forward of 19 and the fitting groove 20 is externally fitted to the fitting portion 5 of the lens 2. A plurality of fitting holes (not shown) are provided on the back surface of the holding body 6A, and the engaging projections 21 protruding in front of the nose pad 6B are fitted into the fitting holes, and are fitted to the holding body 6A. The nose pad 6B is engaged and integrated. The nose pad 6B can be fixed to the holder 6A with an adhesive.

As shown in FIG. 8, the sweat-stopping part 7 has a mounting portion 7A made of plastic and a sponge material (made of foam synthetic resin or foam rubber) adhered to the back surface of the mounting portion 7A.
A fitting groove 22 is formed in the lower surface of the mounting portion over the entire length, and the fitting groove 22 can be detachably mounted on the upper edge 2A of the lens 2. It is like that. It is preferable that the sweat-stopping part 7 be a part that can be bent to the extent that the flexibility of the single-lens lens 2 is not impaired. 9 and 10, the sweat-stopper part 7 is connected to the upper end of the inner frame engaging portion 19 of the nose pad member 6 and can be integrated with the nose pad member 6. As the sweat preventive body 7B, as shown in FIG. 10, an open-cell type water-absorbing sponge body 23 and a closed-cell type sponge body 24 can be used by bonding and integrating.

As shown in FIG. 8, the visor part 8 has a cutout 8A at the rear corner of the visor part 8 in which a locking part 25 to the upper edge 2A of the lens 2 is formed downward, and the visor part 8 is engaged with the edge 2A. It can be attached detachably. 11 to 15 show an inner frame 26. FIGS. 11 and 12 are composed of a plastic rim 27 and a prescription or light-shielding lens 28 fitted to the rim 27. Bridge 29
As shown in FIG. 12, an engaging portion 30 formed of two upper and lower square holes is provided at the center of the rim 27 so as to protrude forward, and both right and left outer edges 27A of the rim 27 are A curve having a curvature that is smaller than the curvature of the spherical surface (hereinafter referred to as 6) so as to be in slight contact with the back curved surface and substantially coincide with the curvature of the curved surface.
Curve design).

The inner frame 26 is configured such that the engaging portion 30 can be removably fitted to the engaging projection 18 of the engaging portion 19 of the nose pad 6 and is attached to the sunglasses 1 if necessary. When it is unnecessary, it can be easily removed. The inner frame 26 shown in FIG. 14 is provided with a nylon thread in place of both outer halves of the rim 27 to hold the lens 28. The inner frame 26 shown in FIG. A rim 27 is fixed to the lens 28 by 31. The bridge portion 29 of the rim 27 is provided with an engagement portion 30 and the left and right outer edge portions 28A of the lens 28.
Has a 6-curve design.

The inner frame engaging portion 19 provided on the nose pad 6 can be a square hole instead of the engaging projection 18, and the engaging portion 30 of the inner frame 26 can be replaced with a square hole. To form an engagement projection. In addition, since the inner frame 26 employs a 6-curve design, it is possible to secure the maximum necessary lens surface while satisfying the spectacle optical condition of keeping the inner frame lens surface perpendicular to the line of sight, and The attachment part 19, which is an attachment for the lens, is integrated with the nose pad 6 for easy attachment and detachment, the lens 28 can be easily attached and its dirt can be easily wiped off, and the attachment can be used for other glasses goggles. .

Further, the surface of the single-lens lens 2 can be coated with a stained film or a vapor-deposited film for adjusting the amount of transmitted light over almost the entire surface of the single-lens lens 2 of the above embodiment. in this case,
The thickness of the dyed film or the vapor-deposited film is thickest at and near the center point of the upper portion of the central bridge portion of the lens 2, and becomes thinner concentrically as the distance from the center point increases. It is advantageous that the amount of transmitted light increases as the distance from the center point increases. By doing so, when it is necessary for the spectacle wearer to view the left and right scenes while viewing the image in front of the front, such as athletics, a relatively small amount of light is applied to the portion where the image receiving sensitivity at the center of the retina is high. An image in front of the front is reflected, and the left and right scenes are reflected with a relatively large amount of light in a relatively low-sensitivity retina portion deviated from the center of the retina, so that a uniform image can be obtained without excess or shortage over the entire field of view. .

According to the above embodiment, the single-lens lens 2 is flexible, and a pair of left and right frames 3, 3 are fixed to the upper edges of the left and right side edges of the lens 2, and the left and right frames 3, 3 are fixed. 3 is provided with a pair of right and left cranes 4 and 4 at the outer end of the single lens system.
It is possible to secure an appropriate degree of softness without impairing the flexibility of the wearer, to fit the wearer's head perfectly, and to widen the front view of the wearer. In addition, since the anti-slip device 16 is attached to the vine 4, the glasses can be prevented from slipping off, and by replacing the anti-slip device 16 with a different thickness, the setting can be set according to the wearer's head. It can be fitted perfectly, and a large number of color variations can be assembled by replacing the anti-slip device 16. Also, since the nose pad 6B is detachable, it can be set to suit each wearer by exchanging the nose pad 6B with one having a different thickness.

The present invention is not limited to the above embodiment, but can be modified as appropriate. For example, it can be adopted as various types of protective glasses other than sunglasses. Further, the lens 2 is not limited to a spherical surface, and may be curved with a predetermined radius of curvature in the horizontal direction, and may be curved with a predetermined radius of curvature different from the horizontal radius of curvature in the vertical direction. Good. Like these, lens 2
However, if the lens 2 is curved in the horizontal and vertical directions, the elasticity of the lens 2 can be improved and the strength can be improved.

[0022]

As described above, the present invention provides a single-lens lens made of impact-resistant plastic such as polycarbonate, a pair of left and right frames fixed to the upper edges of both ends of the lens, and outer ends of both frames. And a pair of left and right vines foldably attached to the lens, and upper ends on both left and right sides of the lens are a pair of left and right frame fixing portions to which a pair of left and right frames are fixed respectively. because there is,
The spring allows the lens to be fitted perfectly to the wearer's head with appropriate softness without impairing the elasticity of the lens itself.

In addition, the left and right ends of the lens are provided at the left and right ends of the lens so as to extend downward from the upper ends of the left and right sides of the lens so that each frame fixing portion is formed in a square shape protruding toward the left and right sides. After going toward the side
Since the concave notch is provided so as to return , the lens frame fixing part is separated from the part other than the frame fixing part, and the deformation of the lens is transmitted to the frame fixing part. Therefore, it is possible to effectively prevent the deformation of the lens by the frame fixed to the lens, and to more reliably prevent the frame from damaging the elasticity of the lens itself.

Further, since the pair of left and right frames are fixed to the pair of left and right frame fixing portions by screws, respectively, the frames can be firmly attached without the possibility of rattling by the screws. Moreover, even if the frame is firmly attached to the frame fixing part, the deformation of the lens is difficult to be transmitted to the frame fixing part as described above, so that the rigidly attached frame does not inhibit the lens deformation, and the screw is used to fix the frame. There is no inconvenience of firmly attaching the. Moreover, as the field of view of the left-right center side of the frame fixing portion is widened, the lower edge of the fixing portion between the left and right pair of frames lenses, Le from the left and right middle side of the frame
It gradually moves upward toward the center of the left and right
Because it is urchin inclined, while improving mounting strength of the frame fixing portion of the holding strength to the frame of the lens by the frame, the field of view to be able to as wide as possible in the left-right center side of the lens, its practical effect is remarkable Is big.

The present invention is characterized in that a sweat-reducing part or a visor part is detachably mounted on the upper edge of the central bridge of the lens. Therefore, it is possible to prevent sweat from entering or flowing into the eyes, and by attaching the visor parts, it is possible to prevent not only sunshine but also rain from falling on the lens, thereby securing a good view.

[Brief description of the drawings]

FIG. 1 is a front perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is an enlarged view taken along line AA of FIG. 2;

FIG. 4 is an enlarged cross-sectional view taken along line BB of FIG. 3;

FIG. 5 is an enlarged front view of a nose pad member.

FIG. 6 is a right side view of FIG.

FIG. 7 is a plan view of FIG. 5;

FIG. 8 is a perspective view for explaining mounting of each part in the embodiment.

FIG. 9 is a front view showing another embodiment of the nose pad.

FIG. 10 is a sectional view taken along line CC of FIG. 9;

FIG. 11 is a front view of the inner frame.

FIG. 12 is a plan view of FIG.

FIG. 13 is an explanatory diagram of a relationship between the case where an inner frame is mounted on a single-lens lens.

FIG. 14 is a front view showing another example of the inner frame.

FIG. 15 is a front view showing still another example of the inner frame.

FIG. 16 is a front view showing a conventional example.

FIG. 17 is a right side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sunglass 2 Single-lens lens 3 Frame 4 Crane 5 Nose pad fitting part

Continuation of the front page (56) References JP-A-1-260415 (JP, A) JP-A-56-104711 (JP, U) JP-A-64-4419 (JP, U) JP-A-1-92628 (JP) , U) Actual opening 58-82020 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G02C 7/10 G02C 5/00-5/14

Claims (7)

(57) [Claims] 1. A single-lens lens made of impact-resistant plastic such as polycarbonate, a pair of left and right frames fixed to upper edges of both ends of the lens, and a pair of right and left foldably attached to outer ends of both frames. The upper ends of the left and right sides of the lens are formed as a pair of left and right frame fixing portions to which a pair of left and right frames are fixed, respectively, and each of the frame fixing portions is formed in a square shape protruding toward both the left and right sides. A notch at the left and right end of the lens is formed in the left and right sides of the lens so that it goes to the left and right center as it goes down from the upper end of the left and right sides of the lens, and then returns to the left and right outside. A pair of left and right frames are fixed to the pair of left and right frame fixing portions with screws, respectively, and the pair of left and right frame lenses is widened so that the left and right center sides of the respective frame fixing portions are widened. The lower edge of the anchoring portion of each
Glasses that are inclined so as to gradually move upward from the left and right central sides of the frame toward the left and right central directions of the lens . 2. The spectacles according to claim 1, wherein an anti-sweat part or a visor part is detachably mounted on an upper edge of the central bridge of the lens. 3. The spectacles according to claim 1, wherein the maximum height of the fixed portion between each of the frames and the lens is in the range of 3 to 15 mm. 4. The spectacles according to claim 1, wherein the single-lens lens is a spherical lens or a lens having a different horizontal curvature radius and a different vertical curvature radius. 5. The spread angle of the vine with respect to the single-lens lens is restricted, and the distance between the rear ends of the right and left vines when the vine is fully expanded and naturally settled is 1 cm. In this state, the radius of curvature of the front surface of the single-lens lens in the horizontal direction is defined as r1, and the distance between the rear ends of the left and right vines is expanded to be 1 + 3 cm against the elasticity of the single-lens lens and the vine. When the radius of curvature in the horizontal direction of the front surface of the single-lens lens when the lens is placed is r3, r1 × 1.
2. The eyeglasses according to claim 1, wherein a relationship of 03 ≦ r3 ≦ r1 × 1.35 is satisfied. 6. A pair of left and right frame fixing portions are provided with screw holes, and the screws are inserted into the screw holes, so that a pair of left and right frames are fixed to the pair of left and right frame fixing portions, respectively. The glasses according to any one of claims 1 to 5, wherein 7. The single-lens lens according to claim 1, wherein the screw is screwed from inside to outside of the single-lens lens.
One of the glasses.