JPH0147766B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention makes it possible to move the eyeglass lenses up and down and change the angle at the same time with a simple operation, so that a comfortable wearing feeling can always be obtained no matter which lens part is used. , relates to a multifocal eyeglass frame.

Until now, various glasses for distance and near vision have been developed in which the eyeglass frame can be moved up and down by moving the nose piece up and down, allowing the use of a distance lens portion and a near point lens portion. However, these devices not only have complicated mechanisms but also are troublesome to operate. In addition, if the lens is set at an angle suitable for far vision, and the near point lens part is used, the inclination angle does not change, so the lens part is not perpendicular to the line of sight, causing eye strain. It was also the cause of moreover,
The contact angle of the nose piece to the nose could not be corrected, and the nose piece was not designed to come into contact with the side of the nose at a contact angle that would allow it to come into close contact with the side of the nose, especially when using the near-point lens part. A comfortable feeling of wearing could not be obtained.

This invention makes it possible to move the eyeglass frame up and down with a simple operation, and at the same time change the angle.Furthermore, the contact angle is such that the nose piece comes into close contact with the side of the nose no matter which lens part is used. To provide a multifocal eyeglass frame capable of correcting the angle so as to make contact and provide a comfortable feeling of wearing.

The multifocal eyeglass frame according to the present invention achieves the object as follows. That is, the inner sides of a pair of left and right lens frames 2, 2 into which multifocal lenses are fitted are connected by a central connecting piece 3, and supports 20, 20 are provided on the outer sides of both lens frames 2, 2, respectively. The front end side is attached, and the frame legs 6, 6 are attached to the supports 20, 20, respectively, through a rotation mechanism that allows the frame legs 6, 6 to rotate in the vertical direction. 6, 6 are respectively attached, and supports 7, 7 are fixedly attached to the inner sides of both lens frames 2, 2 facing each other, and nose pieces 8, 8 are attached to the tips of these supports 7, 7, respectively. The nose pieces 8, 8 are attached so that they can be rotated in the vertical direction through a rotation mechanism that can be rotated in the vertical direction, respectively.
Two or more temporary surfaces are formed on the surfaces of the nose pieces 8, 8, respectively, at different inclination angles and at vertically shifted positions, and any of these temporary surfaces can be rotated to a predetermined use position. At the time, both nose pieces 8,
8 was formed so that the distances between the two facing persons facing each other were approximately equal.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the main parts of an embodiment in which the present invention is applied to bifocal glasses. A indicates the main body of the glasses, and the main body A includes left and right lenses 1,
1, lens frames 2, 2 of the lenses 1, 1, and a central connecting piece 3 that connects the left and right lens frames 2, 2 slightly above the center. The lens 1 has a near-point lens section 5 located slightly below the far-field lens section 4.
This is a lens for both distance and near vision that is integrally formed. Frame legs 6, 6 are attached to each outer end side of the lens frames 2, 2, respectively. The portion shown above is the structure of a conventionally known eyeglass frame.

Supports 7, 7 are arranged slightly below the central connecting piece 3 and inside the lens frames 2, 2 to face each other.
are fixedly attached, and the nose pieces 8, 8 are attached to the tips of the supports 7, 7 so as to be able to rotate up and down, respectively. This will be explained with reference to Figure 3. FIG. 2 is a partially sectional exploded perspective view of the support body 7 and nose piece 8.
A semicircular cut is made in the support 7 from the tip side,
At the end of the notch, a semicircular notch with a diameter smaller than that notch is made in the opposite direction, so
Two steps 9 and 10 are formed between these two cuts. Further, the support body 7 is provided with a horizontal hole 11 for passing a pin therethrough. A leg bar 12 bent in a dogleg shape is attached to the back of the nose piece 8, and a rotating piece 1 is attached to the end of the leg bar 12.
3 is installed. The rotating piece 13 has a circular shape with a fan-shaped piece integrally attached to the outer periphery, and has a size and shape that fits into the recess of the support 7. A stepped portion 14 and a stepped portion 15 are formed before and after the fan-shaped portion. A hole 16 is provided in the center for a pin to pass through.

Then, after fitting the rotating piece 13 into the recess of the support body 7 and aligning the hole 11 of the support body 7 with the hole 16 of the rotating piece 13, the pin 17 is inserted and screwed.
When the nose piece 8 is rotatably attached to the support body 7 via the leg rod 12, the state shown in FIG. 3 is obtained. When the nose piece 8 is rotated downward, the step 15 of the rotating piece 13 comes into contact with the step 10 of the support 7 and stops; when the nose piece 8 is rotated upward, it stops rotating. The step 14 of the piece 13 comes into contact with the step 9 of the support 7 and stops there.

By the way, as is clear from FIG. 1, the surface of the nose piece 8 shown above has a bent dogleg shape when viewed in the vertical direction, and has an upper surface 18 located above and an upper surface 18 located below. and a lower temporary surface 19 located thereon. Note that the nose piece 8 on the right side has a symmetrical shape to the nose piece 8 on the left side. As shown in FIG. 4, when the left and right nose pieces 8, 8 are rotated downward, the opposing upper surfaces 1 of the nose pieces 8, 8
The distance 1 between the two nose pieces 8 and 18 is the distance between the two opposite lower surfaces 19 and 19 when the two nose pieces 8 and 8 are rotated upward.
It is designed so that the distance between them is equal to or slightly wider than l′.

The frame legs 6, 6 are designed so that they can be folded inward and also rotated downwards like the conventional ones, but the mechanism that allows them to rotate downwards is shown in Figures 5 and 6. This will be explained with reference to FIG. A notch is made in a support body 20 fixed to a lens frame 2 from the tip side, and a stepped portion 21 is provided at the back of the notch.
A stepped portion 22 is also provided at the tip of the frame leg 6, and the tip of the frame leg 6 is fitted into the notch and rotatably fixed by a pin 23. When the frame leg 6 is rotated downward, the stepped portion 22 of the support body 20 is rotated downward.
It is designed to stop when it hits 1.

The above-mentioned device is used as shown in FIG. The island-shaped part shown with hatching near the root of the nose is the contact surface 24 that the contact surface of the nose piece 8 comes into contact with, and connects approximately the center of each of the left and right contact surfaces 24, 24. The interval between them almost matches the aforementioned interval l. First, the distance lens part 4,
4 in a normal condition, as shown in FIG. 7A, the frame legs 6, 6 are straightened out and the nose pieces 8, 8 are rotated upward to be worn. At this time, the stepped portions 1 of the rotating pieces 13, 13 of the nose pieces 8, 8
4 and 14 are stably supported against the step portions 9 and 9 of the supports 7 and 7. In this state, nose piece 8,
The lower contact surfaces 19, 19 of 8 are the contact surfaces 24, 24 of the nose.
The main body A of the eyeglass frame is supported in a lowered state in contact with the main body A of the eyeglass frame.

If you want to use the near point lens part 5, please use the main body A.
When the nose pieces 8, 8 are lifted and the upper ends of the nose pieces 8, 8 are lightly pressed against the edge of the eyebrows, the nose pieces 8, 8 are rotated downward. (Incidentally, by simply lifting the main body A, the nose pieces 8, 8 will hit the edge of the eyebrows and rotate, so this operation can be done almost unconsciously.) At this time, the main body A can be moved at the same time. Lean forward. Then, the support body 2 of the lens frames 2, 2
0, 20 and the frame legs 6, 6 rotate, and the steps 22, 22 of the frame legs 6, 6 stop by touching the steps 21, 21 of the supports 20, 20, and then the nose piece 8,8
The stepped portions 15, 15 of the rotating pieces 13, 13 stop against the stepped portions 10, 10 of the supports 7, 7, resulting in the state shown in FIG. 7B. In this wearing state, nose pieces 8, 8
The upper abutment surfaces 18, 18 of the nose abut the abutment surfaces 24, 24 of the nose, and the main body A is supported while being lifted upward and tilted forward. For this reason, the near-point lens parts 5, 5 are also slightly raised, approaching the center of the visual field, and further approaching the eyes.
Moreover, when using the near-point lens parts 5, 5, we often look at things at hand, and when we look at things at hand, the field of view is directed downwards, so the main body A is tilted slightly forward. The angle of inclination is almost perpendicular to the line of sight. The near-point lens parts 5, 5 are close to the center of the visual field and are almost orthogonal to the line of sight, so your eyes don't get tired (the inclination angle of the glasses is 5 degrees or more when using the far-field lens parts). 10 degrees, and around 20 degrees when using the near point lens part is considered ideal from a medical perspective.) Also,
Since it is close to the eyes, the field of view of the near-point lens parts 5, 5 is widened.

As is clear from the above, the surface of the nose piece 8 is bent in a dogleg shape in the vertical direction, and an upper contact surface 18 located above and a lower contact surface 19 located below are formed. This is to support the main body A when it is lifted up or when it is lowered, and also because it rotates when the main body A is moved up and down, so that the abutment surface of the nasal side surface of the nose piece 8 is This is to correct the contact angle to 24.

In addition, when lowering the main body A from the lifted state, simply push down the main body A and press the nose pieces 8, 8 downward against the sides of the nose.
At the same time, the lower part of the main body A is rotated forward, and the support body 2 of the lens frames 2, 2 is
0.0, 20, frame legs 6, 6 can be straightened and worn as is.

Next, a second embodiment of the invention will be described.
As shown in FIG. 8, a support rod 25 is attached to the lens frame 2, and a support body 7 is attached to the tip of the support rod 25. A circular depression is provided on the tip side of the support body 7, and a hole 11 through which a pin 17 is passed is bored on the side. A protrusion 26 is provided at the upper end of the support body 7. A rotating piece 13 is provided on the back surface of the nose piece 8, and a hole 16 is bored in the rotating piece 13. A projecting piece 27 is provided above the rotating piece 13. When the one shown in FIG. 8 is assembled, it will become as shown in FIG.
The nose piece 8 is stably locked by being lightly pressed against and in contact with.

The operation of the second embodiment is as shown in FIG. That is, when worn with the nose pieces 8, 8 rotated upward and the main body A tilted forward, the lower abutment surfaces 19, 19 of the nose pieces 8, 8 are attached to the nose contact surfaces 24, 24. is in contact with When the nose pieces 8, 8 are rotated downward and the main body A is straightened and worn, the upper contact surfaces 18, 18 of the nose pieces 8, 8 are in contact with the contact surfaces 24, 24 of the nose. In addition, only when the rotating piece 8 is rotated upward, the protruding piece 27 comes into elastic contact with the protruding ridge 26 and is stably locked.
A locking means for downward rotation is omitted. In this embodiment, the rotating piece 1 of the nose piece 8 is
3 is mounted slightly upwards, it will stop stably when the upper part 18 is used, but when the lower part 19 is used, a force is applied to rotate it downward, so we provided a locking means only in the upper part. be. That is, the locking means can be provided or not provided depending on the mounting position and mounting state of the nose piece 8, the rotating piece 13, etc. In addition, any other locking means can be used as the locking means.

When comparing the first embodiment and the second embodiment, it is clear that it depends on whether the rotating piece 8 is rotated at a position close to the lens frame 2 or at a position far from the lens frame 2. , supporting the main body A upward and supporting it downward on the upper temporary surface 18 and the lower temporary surface 19 are reversed.

Next, according to FIG. 11, the nose piece 8 that can be adopted is
Introducing various shapes of. In addition, what is introduced here is the nose piece 8 on the right side as seen from the wearer, and the one on the left side has a symmetrical shape. In the case of A, the lower part 19 is made wider,
The structure of the first embodiment is as follows. In the second embodiment, the upper surface 18 is made wider, which is the same as in the second embodiment. In the case of C, the upper temporary surface 18 and the lower temporary surface 19 have the same width. The second one forms three lenses and is used for trifocal glasses. The one shown in E has a nearly spherical surface and is mainly used for glasses with three or more focal points.

Although various embodiments of the present invention have been shown above, the embodiments of the present invention are not limited to the above embodiments. For example, although one method of attaching the frame leg 6 to the lens frame 2 so as to be able to rotate in the vertical direction has been shown, it goes without saying that various methods other than the method shown can be adopted as the method. Furthermore, it goes without saying that various methods other than the one shown can be used to attach the nose piece 8 so that it can be rotated in the vertical direction. Furthermore, any shape other than the one shown can be adopted as the shape of the nose piece 8;
For example, a linear portion may be interposed between the two surfaces to separate them, thereby increasing the vertical movement distance. It may be possible to make it possible to adjust the angle of each part, or to make it possible to replace each part separately.

The structure of the present invention is as described above, and the present invention has the following excellent effects.

The multifocal eyeglass frame according to the present invention includes two frame legs 6,
6 are attached to the lens frames 2, 2 so as to be able to rotate in the vertical direction, and nose pieces 8, 8 are attached to the supports 7, 7 attached to the lens frames 2, 2 so that they can be rotated in the vertical direction. It is simply attached, and the attachment mechanism is simple. Moreover, since the nose pieces 8, 8 are simply formed with two or more surfaces having different inclination angles and vertically shifted positions, it is extremely inexpensive to manufacture them, for example, by plastic molding. Become something.
Therefore, the device according to the present invention is easy to manufacture as a whole and can be manufactured at a very low cost.

Then, by bending or extending the frame legs 6, 6, select the rotation angle of the nose pieces 8, 8, and simply bring them into contact with the abutting surfaces 24, 24 on either side of the nose to select the desired lens part. Since you can use it with just one touch, you don't have to use much nerve. This operation is extremely convenient because it can be performed while wearing glasses. In addition, the respective contact surfaces formed on the surface of the nose pad piece 8 are made to have different inclination angles, so that no matter which contact surface of the nose pad piece 8 is used, the contact surface 24 on both sides of the nose during use is The contact angle has been carefully designed to provide a comfortable fit, so no matter which part of the lens you use, you can feel comfortable wearing it.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the first embodiment of the present invention, Fig. 2 is a partially sectional exploded perspective view showing the nose piece attachment part of the first embodiment, and Fig. 3 is an assembled state of the structure shown in Fig. 2. FIG. 4 is an explanatory diagram illustrating the operation of the nose piece, and FIG. 5 is a perspective view showing the operating state.
A perspective view showing a portion of the frame leg bending mechanism of the embodiment,
FIG. 6 is a cross-sectional view of FIG. 5, FIG. 7 is an explanatory diagram illustrating the operation of the first embodiment, and FIG. 8 is an exploded perspective view showing the nose piece attachment part of the second embodiment of the present invention. 9 is a perspective view showing the assembled state and operating state of the device shown in FIG. 8, and FIG. 10 is a perspective view of the device shown in FIG.
An explanatory diagram for explaining the operation of the embodiment, and FIG. 11 is a perspective view showing various types of nose pieces that can be used in the present invention. A... Main body, 2... Lens frame, 6... Frame legs, 7
... Support body, 8 ... Nose piece, 18 ... Upper part,
19...Downward for the time being.

Claims (1)

[Claims] 1 Left and right 1 where multifocal lenses are fitted respectively
The inner sides of the pair of lens frames 2, 2 are connected by a central connecting piece 3, and the front end sides of supports 20, 20 are attached to the outer sides of both lens frames 2, 2, respectively. The frame legs 6, 6 are respectively attached to the rear so that the frame legs 6, 6 can be rotated in the vertical direction via a rotation mechanism that allows the frame legs 6, 6 to rotate in the vertical direction. , 2 are fixedly attached to the inside of each of the supports 7, 7, facing each other, and a nose piece 8, 8 is provided at the tip of each of the supports 7, 7 so as to be able to rotate in the vertical direction. The nose pieces 8, 8 are attached so that they can be rotated in the vertical direction via a movement mechanism, and the nose pieces 8,
Two or more temporary surfaces are formed on the surface of No. 8 at different inclination angles and at vertically shifted positions, and when an arbitrary object is rotated to a predetermined use position, two or more temporary surfaces are formed. This multifocal eyeglass frame is formed so that the distance between the opposing surfaces of the pieces 8, 8 is approximately equal.