WO2024232113A1 - Spectacle frame - Google Patents

Abstract

[Problem] To provide a spectacle frame that is less susceptible to breakage and has excellent design characteristics although having a simple structure. [Solution] The present invention relates to a spectacle frame 100, wherein back surfaces of end parts 13 on both sides of a front part 1 are inclined to face inward, a first connection part 3 is provided on the back surface side of each of the end parts 13, a temple part 2 has a body part 21 and an attachment part 22 provided so as to be continuous with a front end of the body part 21, the attachment part 22 is bent inward from the longitudinal direction of the body part 21 when viewed from above, a second connection part 5 is provided on the outer surface side of the attachment part 22, and when the second connection part 5 is connected to the first connection part 3, the temple part 2 is attached to the front part 1.

Description

Eyeglass Frames

The present invention relates to a hingeless eyeglass frame, and more specifically to an eyeglass frame in which a first connecting part in the front part is directly connected to a second connecting part in the temple part instead of a hinge.

In the field of eyeglass frames, so-called hingeless eyeglass frames are commercially available, which have a front section to which a pair of lenses can be attached and temple sections that are connected to both ends of the front section.

Hingeless eyeglass frames have the advantage that they do not have any hinges, and therefore do not suffer from drawbacks that are caused by hinges, such as the screws and pins in the hinges loosening over time, the hinges being easily damaged, and the hinge parts being small and therefore easily attracting dust and other dirt.

An example of a hingeless eyeglass frame is one that has a first magnetic body held at a fixed portion of the eyeglass body and a second magnetic body held at the temple and magnetically attached to the first magnetic body concentrically (see, for example, Patent Document 1).
Also, there is known an eyeglass frame in which a magnetic material is provided at the joint of the end piece end, which is the fixed side of the connecting part at both the left and right ends of the front frame of the eyeglasses, so that the inner corners can be rounded, and a magnet is provided near the end piece end, connected forward from the magnetic material, and a magnet is provided at the temple joint, which is the movable side of the connecting part, for attracting the end piece side magnetic material, and brim members, which serve as stopping means to prevent the temples from shifting up and down, are provided on the inside of the end piece and at the top and bottom of the joint, allowing the temples to be folded or unfolded (see, for example, Patent Document 2).
Also known is a spectacle frame that includes a frame with storage grooves on both ends, and two temples with a main body structure and a connecting structure, one end of the main body structure being rotatably connected to the connecting structure and the other end being inclined relative to the one end, the connecting structure being positionable within the storage groove and removably connected to the frame, and the connection to the frame can be released when the connecting structure moves away from the storage groove along a first direction perpendicular to the longitudinal direction of the frame (see, for example, Patent Document 3).

JP 2007-309953 A JP 2015-18199 A JP 2021-149080 A

However, the eyeglass frame described in Patent Document 1 has a complex structure in the magnetic portion between the first magnetic body and the second magnetic body, and the eyeglass frame described in Patent Document 3 has a complex structure within the storage groove, which makes it fragile and complicated to assemble.
In addition, the eyeglass frame described in Patent Document 1 has the first magnetic body attached to the rear end of the end piece that protrudes rearward from the front part, while the eyeglass frame described in Patent Document 2 has the magnet attached to the rear end of the end piece that protrudes rearward from the front part, so there is a drawback in that the protruding part is easily damaged if the eyeglass frame is accidentally dropped or stepped on, etc.
Furthermore, none of the eyeglass frames described in the above Patent Documents 1 to 3 can be said to have excellent design.

The present invention was made in consideration of the above circumstances, and aims to provide an eyeglass frame that has a simple structure, is difficult to break, and has excellent design.

The inventor discovered that the above problem could be solved by providing the first connecting part directly on the inclined back surface at both ends of the front part, and providing the second connecting part on an attachment part bent inwardly of the temple part, and directly connecting the first connecting part and the second connecting part, which led to the completion of the present invention.

The present invention is an eyeglass frame having a front section on which a pair of lenses can be attached, and a pair of temple sections attached to the front section, in which the rear faces of both ends of the front section are both inclined to face inward, and a first connecting section is provided on each rear face of the ends, the temple sections have a main section and an attachment section provided so as to be continuous with the front end of the main section, the attachment section is bent inward from the longitudinal direction of the main section in a top view, and a second connecting section is provided on the outer surface side of the attachment section, and when the second connecting section is connected to the first connecting section, the temple sections are attached to the front section.

It is preferable that the eyeglass frame of the present invention satisfies the condition of the following formula, where the angle between the plane direction of the back surface of one end of the front part and a straight line connecting the left and right ends is a degrees.
30≦a≦60

It is preferable that, when connected, the eyeglass frame of the present invention is configured so that the second connecting part is rotatable relative to the first connecting part, and the temple parts are folded by pivoting in an arc below the front part from the use position in which the temple parts are open relative to the front part and being positioned behind the front part.
In this case, it is more preferable that in the folded position where the temple portions are closed, the temple portions are arranged in parallel with the front portion, and the convex side of the arch-shaped temple portions faces the front portion.

It is preferable that the eyeglass frame of the present invention has a first connecting portion that is a first magnetic body, a second connecting portion that is a second magnetic body, and the connection is by magnetic adhesion, and when the second magnetic body is magnetically attached to the first magnetic body, the temple portion is attached to the front portion, and when the second magnetic body is separated from the first magnetic body, the temple portion is detached from the front portion.
In this case, it is more preferable that one of the first magnetic body and the second magnetic body has a convex portion formed in the center of its magnetic surface and the other has a concave portion formed in the center of its magnetic surface, the convex portion being insertable into the concave portion, and the second magnetic body being rotatable relative to the first magnetic body around the convex portion as an axis.

The eyeglass frame of the present invention has a groove formed in the mounting portion, and a visor extending rearward is formed at the upper end of the end of the front portion, and a guide rib is provided on the visor, and it is preferable that the guide rib be inserted into the groove when connecting.
Specifically, the mounting portion has a semicircular base shape in side view, with a semicircular portion that is semicircular in side view and a rectangular base portion that is continuous with each other, the groove portion is formed so as to continue with the entire circumferential direction of the side surface of the semicircular portion and with at least a portion of the upper and lower side surfaces of the base portion, and a guide rib is provided so as to hang down from the rear end of the eaves portion, and when the second connecting portion is connected to the first connecting portion and rotated relative to the first connecting portion, it is preferable that the mounting portion is guided by the guide rib inserted into the groove portion running along the groove portion.

Moreover, the lower end of the guide rib is curved in an inverted U-shape, a protrusion that protrudes downward is formed at the outer end of the guide rib, and a deep groove that is continuous with the groove is formed on the upper side of the base, and more preferably, when the temple portion is in the use position where it is open relative to the front portion, the protrusion is pressed into the deep groove to temporarily fix the temple portion.

In the eyeglass frame of the present invention, when the second connecting portion is connected to the first connecting portion, the temple portion is attached to the front portion and can be maintained in the attached state.
Furthermore, by positioning the temples in the usage position, the glasses can be used as glasses with a sufficient fit.

In the eyeglass frame of the present invention, the back surfaces of both ends of the front part on which the first connecting part is provided are inclined, and the mounting part on which the second connecting part is provided is bent inward, so that the magnetic attachment surfaces of the first connecting part and the second connecting part are inclined when viewed from above.
This is an unprecedented structure and has excellent design qualities.

In the eyeglass frame of the present invention, if the angle between the direction of the back surface of one end of the front part and the straight line connecting the left and right ends is a degrees, by satisfying the condition of the above formula, it becomes easier to connect the temple part to the front part.
In addition, when the device is attached, the connecting portion where the second connecting portion is connected to the first connecting portion is inclined, so that the force acting in the front-rear or left-right direction on the connecting portion is dispersed, thereby reducing the load on the connecting portion.

The eyeglass frame of the present invention is so-called hingeless, and has a simple structure having a front part to which the first connecting part is directly attached and a temple part to which the second connecting part is directly attached, which makes it less likely to break and simplifies assembly.
Another advantage is that dirt such as dust is less likely to adhere to the connecting portion between the first connecting portion and the second connecting portion, and even if dirt does adhere to the connecting portion, it is easy to remove the dirt.
In addition, since the first connecting portion is provided directly on both end portions of the front portion, and the second connecting portion is provided directly on the mounting portion of the temple portion, it is less likely to be damaged even if it is accidentally dropped or stepped on, etc.

In the eyeglass frame of the present invention, when the second connecting part is rotatable relative to the first connecting part, the temple part can be rotated from the use position in an arc below the front part and placed in a folded position behind the front part. In other words, by rotating the temple part, it can be placed in the use position or the folded position.

In the folded position, the temple portions are arranged in parallel with the front portion, allowing the eyeglass frame to be made compact.
In addition, by making the convex side of the arch-shaped temple portion face the front portion when viewed from above, the directions of curvature of the front portion and temple portion are consistent, which has the advantage that the middle portion of the eyeglass frame becomes thinner, making it easier to store in a breast pocket, etc.
Furthermore, by rotating the temple portion in an arc and by making the curved direction of the front portion and the temple portion coincident with each other, the design is made more excellent.
In addition, by rotating the temple portion to the folded position, it is possible to store the glasses in a case, etc. In this case, since the temple portion is not separated from the front portion, loss of parts can be prevented.

In the eyeglass frame of the present invention, the first connecting portion is made of a first magnetic material, the second connecting portion is made of a second magnetic material, and the connection is made by magnetic adhesion, thereby making the structure simple and enabling the temple portion to be attached and detached to the front portion.
That is, the temple portion can be detached from the front portion when the second magnetic body is separated from the first magnetic body, and therefore, the temple portion can be stored in a case or the like in a detached state.
In addition, since the temple portion is detachable from the front portion, if the temple portion is damaged or if one wishes to change the design of the temple portion, the temple portion can be easily replaced.

In this case, by using the convex portion formed on the first magnetic body or the second magnetic body as the axis during the above-mentioned rotation, it is possible to prevent misalignment from occurring when the second magnetic body rotates relative to the first magnetic body.
Furthermore, by inserting the convex portion into the concave portion, the temple portion can be positioned relative to the front portion.

In the eyeglass frame of the present invention, the guide rib is inserted into the groove when the eyeglass frame is connected, thereby preventing the temples from wobbling when in the use position.
In addition, when the temple part is connected and rotated, the guide rib inserted into the groove guides the mounting part by moving along the groove, thereby preventing wobbling when the temple part is rotated.
That is, the temple portion can be rotated smoothly.
Furthermore, the temple portion can be temporarily fixed in the use position by pressing the protrusion formed on the outer end of the guide rib into the deep groove portion that is continuous with the groove portion on the upper side surface of the base portion.
This can prevent the temples from shaking when worn as glasses.

[Correction under Rule 91 29.11.2023]
FIG. 1(a) is a top view showing one embodiment of an eyeglass frame according to the present invention. FIG. 1B is a bottom view of the eyeglass frame shown in FIG. FIG. 2 is a perspective view showing the eyeglass frame shown in FIG. 1(a) with both temple portions removed. FIG. 3 is a perspective view showing one side of a temple portion of the eyeglass frame shown in FIG. FIG. 4A is an enlarged cross-sectional view of the eyeglass frame shown in FIG. 3 taken along line BB. FIG. 4B is an enlarged cross-sectional view of the eyeglass frame shown in FIG. 1A taken along line AA. FIG. 5 is an explanatory diagram for explaining the rotation of the temple portion in the eyeglass frame according to this embodiment. FIG. 6A is a top view showing the eyeglass frame shown in FIG. 1A in a folded state. FIG. 6B is a bottom view showing the eyeglass frame shown in FIG. 1A in a folded state.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.
In the drawings, the same elements are given the same reference numerals and duplicated explanations are omitted.
Furthermore, the dimensional ratios of the drawings are not limited to those shown in the drawings.

The eyeglass frame according to the present invention can be used as so-called eyeglasses by mounting a pair of lenses. The eyeglass frame can also be used as fashion eyeglasses even if no lenses are mounted.
Examples of such lenses that can be used include corrective lenses for myopia, hyperopia, astigmatism, presbyopia, and both; lenses for color vision correction; lenses for blocking ultraviolet rays, blocking blue light, shading (color lenses); lenses for protecting the eyes such as dust protection; and lenses for fashion glasses.
The lenses may be made of plastic or glass.

In this specification, a straight line connecting both ends of the front part in the longitudinal direction is defined as a straight line in the left-right direction. That is, the ends of the front part are located at the left and right ends of the front part, respectively.
In addition, when the eyeglass frames are worn (when the temples are in the wearing position), the side of the wearer's head relative to the front part is considered to be the "rear" and the opposite side is considered to be the "front".
In other words, the front-rear direction is a direction perpendicular to the left-right direction and the up-down direction.
In addition, when the eyeglass frames are worn (when the temples are in the wearing position), the side facing the head with respect to the temples is referred to as the "inner" side, and the opposite side as the "outer" side.
Furthermore, when the front portion 1 and the temple portion 2 are connected, the position of the temple portion when it is fully opened by spreading it outward relative to the front portion is called the "use position," and the position of the temple portion when it is fully folded by closing it inward is called the "folded position." Therefore, the eyeglass frame is worn by the wearer with the temple portion in the use position.

Fig. 1(a) is a top view showing one embodiment of an eyeglass frame according to the present invention, and Fig. 1(b) is a bottom view of the eyeglass frame shown in Fig. 1(a). Note that in the eyeglass frames shown in Fig. 1(a) and Fig. 1(b), the temples are in the use position.
As shown in Figures 1(a) and 1(b), the eyeglass frame 100 of this embodiment has a front portion 1 to which a pair of lenses can be attached, and temple portions 2 attached to both ends of the front portion 1.
In the eyeglass frame 100, by arranging the temple portion 2 in the use position, the eyeglasses can be used as eyeglasses with a sufficient fit.

In the eyeglass frame 100, as described below, a first connecting portion provided directly on the front portion 1 and a second connecting portion provided directly on the temple portion 2 can be connected to each other.
In this way, the eyeglass frame 100 has a small number of parts and an extremely simple structure, so it is not easily broken and the assembly method is simplified.
Furthermore, even if dirt such as dust adheres to the connecting portion between the first connecting portion and the second connecting portion, the dirt can be easily removed.
In addition, it is difficult to break even if it is accidentally dropped or stepped on.
In addition, since the eyeglass frame is hingeless, i.e., does not have a hinge between the front portion 1 and the temple portion 2, durability of the hinge is not an issue.

Here, in the eyeglass frame 100 according to this embodiment, a first magnetic body is used as the first connecting portion, and a second magnetic body is used as the second connecting portion.
Therefore, in the eyeglass frame 100, the connection between the first connecting portion and the second connecting portion is achieved by magnetic attraction between the first magnetic body and the second magnetic body.

In this way, in the eyeglass frame 100, since a magnetic body is used as the connecting portion, when the second magnetic body is magnetically attached to the first magnetic body, the temple portion 2 is magnetically attached to the front portion 1, and this state is maintained (see Figs. 1(a) and 1(b)).
On the other hand, when the second magnetic body is separated from the first magnetic body, the temple portion 2 can be removed from the front portion 1 (see Figs. 2 and 3).

Furthermore, in the eyeglass frame 100, the temple portion 2 is detachable from the front portion, so that if the temple portion 2 is damaged or if one wishes to change the design of the temple portion 2, the temple portion 2 can be easily replaced.
When not in use, the temple portion 2 can be detached from the front portion 1 and stored in a case or the like.

The first magnetic body and the second magnetic body are both magnetic and can be magnetically attracted to each other.
Therefore, both or at least one of the first magnetic body and the second magnetic body is a permanent magnet or a hard magnetic body. Note that when one of the first magnetic body and the second magnetic body is a permanent magnet or a hard magnetic body, the other may be a soft magnetic body.
As the permanent magnet or hard magnetic material, for example, neodymium iron boron magnet, ferrite magnet, alnico magnet, samarium cobalt magnet, samarium iron nitrogen magnet, etc. can be used, and as the soft magnetic material, for example, iron, silicon steel, permalloy, sendust, permendur, soft ferrite, amorphous magnetic alloy, nanocrystalline magnetic alloy, etc. can be used.

In the eyeglass frame 100, the front portion 1 is curved so as to be bow-shaped when viewed from above, and has left and right rim portions 10 on which lenses can be attached, a bridge portion 11 bridging the rim portions 10, nose pad portions 12 provided on the inside of each rim portion 10 and below the bridge portion 11, end portions 13 extending outward from each rim portion 10, and a visor portion 14 provided at least on the upper end of the end portions 13.

In the front portion 1, the rim portion 10, the bridge portion 11, the nose pad portion 12, the end portion 13 and the visor portion 14 are made of resin or metal and are integrally formed.
As such a resin, celluloid, acetate, polyphenylsulfone, polyetherimide, polyamide, etc. can be used, and as a metal, titanium (including β-titanium), aluminum, gold, stainless steel, etc. can be used.
These may be used alone or in combination.
In the eyeglass frame 100, the rim portion 10, bridge portion 11 and nose pad portion 12 are well known and commercially available parts can be used as appropriate, so detailed explanations will be omitted.

In the front portion 1 , the end portions 13 are provided on the outermost sides of the front portion 1 .
That is, the ends 13 are provided so as to extend outward from the outer ends of the left and right rim portions 10, respectively.
At this time, the back surface (rear surface) of the end portion 13 is inclined so as to face more inward than the back surface of the rim portion 10 .
That is, the front surface of end portion 13 is formed so as to continuously follow the front surface of rim portion 10 when viewed from above, and forms a gentle bow shape overall, whereas the back surface of end portion 13 is formed so as to bend inward from the end of the back surface of rim portion 10, which forms a gentle bow shape when viewed from above.
Therefore, the end portion 14 becomes thicker as it goes outward.

Here, if the angle (the narrower angle) between the plane direction B of the back surface of one end 13 of the front part 1 and the straight line A in the left-right direction connecting the left and right ends is a degree,
30≦a≦60
It is preferable to satisfy the following condition:
40≦a≦50
It is more preferable that the above condition is satisfied.
In this case, it becomes easier to connect the temple portion 2 to the front portion 1.
Furthermore, when the device is worn, the force in the front-to-rear or left-to-right direction applied to the connecting portion where the second connecting portion is connected to the first connecting portion is distributed, thereby reducing the load on the connecting portion.

As described above, in the eyeglass frame 100, the back surfaces of both ends 13 of the front portion 1 on which the first magnetic body 3 is provided are inclined, and the mounting portion 22 on which the second magnetic body 5 is provided is bent inward, so that the magnetic attachment surfaces P of the first magnetic body 3 and the second magnetic body 5 are inclined when viewed from above. This is an unprecedented structure and has excellent design qualities.

FIG. 2 is a perspective view showing the eyeglass frame shown in FIG. 1(a) with both temple portions removed.
As shown in FIG. 2, the end portion 13 has a blind hole formed on its back surface, and the first magnetic body 3 (first connecting portion) is embedded in the blind hole.
The first magnetic body 3 is cylindrical, and the exposed surface (rear side) becomes a magnetic adhesion surface with the second magnetic body 5 (second connecting portion) described later.
At this time, the magnetic surface of the first magnetic body 3 is flush with the rear surface of the peripheral end portion 13 .
This allows the temple portion 2, which will be described later, to be rotated smoothly.
The first magnetic body 3 has a convex portion 3a formed in the center of the magnetic surface, the convex portion 3a protruding in a direction perpendicular to the magnetic surface.

In the front portion 1 , the eaves portions 14 are plate-shaped and provided on both sides of the front portion 1 .
The eaves portion 14 is provided so as to extend rearward from an upper end that is continuous with a part of the rim portion 10 and the end portion 13. In other words, the eaves portion 14 is provided so as to form an inverted L-shape together with the rim portion 10 and the end portion 13 in a side view.
In addition, the eaves portion 14 is provided continuously to the outer end of the end portion 13 so that, when viewed from above, the eaves portion 14 starts at approximately the center of the upper end of the rim portion 10 and extends rearward to a greater extent the further outward it goes.

The eyeglass frame 100 has an eave portion 14, which provides a superior design and covers the connecting portion between the front portion 1 and the temple portion 2. That is, as shown in Fig. 1(a), the connecting portion between the front portion 1 and the temple portion 2 is hidden by the eave portion 14 when viewed from above, whereas as shown in Fig. 1(b), the connecting portion between the front portion 1 and the temple portion 2 is visible by the eave portion 14 when viewed from below.
This makes it possible to prevent rain or foreign matter from above from adhering to the connecting portion between the front portion 1 and the temple portion 2.
Furthermore, the canopy portion 14 blocks direct sunlight, so that the first magnetic body 3 and the second magnetic body 5 can be prevented from being heated or from being deteriorated by ultraviolet rays as much as possible.

Further, in the front portion 1, a guide rib 4, which will be described later, is provided at the rear end of the eave portion 14 on the end portion 13 side.
Specifically, the guide rib 4 is provided so as to hang down from the rear end of the eave portion 14 on the end portion 13 side.
That is, in the front portion 1, the end portion 13, the eaves portion 14 and the guide rib 4 form an inverted U-shape in a side view.
The guide rib 4 is plate-shaped and disposed so as to face the back surface of the end portion 13 , and the front and rear surfaces of the guide rib 4 are disposed parallel to the back surface of the end portion 13 .

The guide rib 4 has a lower end 4a curved in an inverted U-shape. That is, the guide rib 4 is cut out in an arch shape so that the center is higher than both sides.
Further, at the outer end of the guide rib 4, a rod-shaped protrusion 4b is formed which protrudes downward beyond the curved portion.

3 is a perspective view showing one side of the temple portion of the eyeglass frame shown in FIG. 1(a), and FIG. 4(a) is an enlarged cross-sectional view of a portion of the eyeglass frame shown in FIG. 3 taken along line BB.
As shown in FIG. 3A , in the eyeglass frame 100 , the temple portion 2 is curved in a gentle arch shape when viewed from above, and has a main body portion 21 and an attachment portion 22 that are continuous with each other.
In the temple portion 2, the attachment portion 22 and the main body portion 21 are made of resin or metal and are integrally molded. The resin or metal may be the same as those described above.

In the temple portion 2, the main body portion 21 is composed of an intermediate portion 21a continuing to the rear end of the attachment portion 22, and an ear hook portion 21b continuing to the intermediate portion 21a.
In the main body 21, at least the middle portion 21a is curved so as to fit the shape of the wearer's head, and has a certain degree of flexibility.
As a result, when the eyeglass frame 100 is worn, the intermediate portion 21a pinches the wearer's head and elastically deforms, making it possible for the intermediate portion 21a to fit the wearer's head.

Additionally, ear hook portion 21b is curved downward and inward to fit the shape of the base of the ear.
As a result, when wearing the eyeglass frame 100, by wearing the ear hook portion 21b on the ear, the eyeglass frame 100 is less likely to slip off and is prevented from coming off and falling off.

In the temple portion 2 , the attachment portion 22 is provided so as to be continuous with the front end of the middle portion 21 a of the main body portion 21 .
At this time, the attachment portion 22 is bent inward from the longitudinal direction of the main body portion 21 in a top view. Specifically, the attachment portion 22 is bent inward from the front-rear direction C (see FIG. 1B ) perpendicular to the left-right direction.

In the temple portion 2, a blind hole is formed on the outer surface side of the mounting portion 22, and the second magnetic body 5 is embedded in the blind hole.
The second magnetic body 5 is cylindrical, and the exposed surface (outside) serves as a magnetic surface for bonding with the first magnetic body 3 .
At this time, the magnetic surface of the second magnetic body 5 is flush with the outer surface of the surrounding mounting portion 22. This allows the temple portion 2, which will be described later, to be rotated smoothly.
The second magnetic body 5 has a concave portion 5a formed in the center of the magnetic surface, the concave portion 5a being recessed in a direction perpendicular to the magnetic surface.
The details of the second magnetic body 5 are as described above.

Here, the convex portion 3 a of the first magnetic body 3 can be inserted into the concave portion 5 a of the second magnetic body 5 .
In the eyeglass frame 100, when the first magnetic body 3 and the second magnetic body 5 are magnetically attached to each other, the convex portion 3a is inserted into the concave portion 5a. As a result, in the eyeglass frame 100, when the second magnetic body 5 is rotated relative to the first magnetic body 3, the convex portion 3a can be rotated as an axis, thereby preventing misalignment between the first magnetic body 3 and the second magnetic body 5.
Furthermore, by inserting the convex portion 3a into the concave portion 5a, the attachment position of the temple portion 2 relative to the front portion 1 can be determined.

As shown in FIG. 4( a ), in the temple portion 2 , a groove portion 6 is formed in the attachment portion 22 .
Specifically, in the temple portion 2, when the mounting portion 22 having a semicircular trapezoid shape in a side view is composed of a base portion 22b having a rectangular shape in a side view that continues forward from the front end of the main body portion 21, and a semicircular portion 22a having a semicircular shape in a side view that continues forward from the front end of the base portion 22b, the groove portion 6 is composed of a first groove portion 61 provided over the entire circumferential direction of the side surface of the semicircular portion 22a, a second groove portion 62 provided in at least a part of the upper side surface of the base portion 22b, and a third groove portion 63 provided in at least a part of the lower side surface of the base portion 22b. These are formed to be continuous.

Further, in the mounting portion 22, a deep groove portion 6a is formed so as to be continuous with a second groove portion 62 provided on the upper side surface of the base portion 22b.
The deep groove portion 6a is dug deeper below the groove portion 6, and is a hole having a shape corresponding to the shape of the protrusion 4b so that the protrusion 4b can be press-fitted therein.

In the eyeglass frame 100, the temple portion 2 can be rotated relative to the front portion 1. That is, the second magnetic body of the temple portion 2 can be rotated relative to the first magnetic body of the front portion 1.
FIG. 5 is an explanatory diagram for explaining the rotation of the temple portion in the eyeglass frame according to this embodiment.
As shown in FIG. 5, in the eyeglass frame 100, the temple portions 2 can be positioned in a use position (upper side of the paper), a folded position (lower side of the paper), or, for example, one of the temple portions 2 can be positioned midway between the use position and the folded position (middle of the paper).

The eyeglass frame 100 is used by being worn by a wearer when the temple portions 2 are in a fully open use position.
Fig. 4(b) is an enlarged cross-sectional view of the eyeglass frame shown in Fig. 1(a) taken along line A-A. That is, it is a cross-sectional view when the temple part 2 is in the use position. Fig. 4(b) is a view of the case where the lens L is attached to the rim part 10.
As shown in FIG. 4(b), when the temple portion 2 is in the use position, the guide rib 4 is inserted mainly into the second groove portion 62 of the groove portion 6 (see FIG. 4(a)).
At the same time, the protrusion 4b is press-fitted into the deep groove 6a, whereby the temple portion 2 is temporarily fixed in the use position, so that the temple portion 2 can be prevented from shaking when the eyeglass frame 100 is worn.
When the temple portion 2 is rotated in the use state, the protruding portion 4b can be removed from the deep groove portion 6a with a relatively small force.

Returning to FIG. 5, when the temple portion 2 rotates, the first magnetic body 3 and the second magnetic body 5 are magnetically attached, and the convex portion 3a is maintained inserted in the concave portion 5a. Therefore, when the second magnetic body is rotated around the convex portion 3a relative to the first magnetic body 3 from the state in which the temple portion 2 is in the use position, the tip of the temple portion 2 rotates so as to draw an arc below the front portion 1. In other words, whereas in conventional general eyeglasses, the temple portion opens and closes horizontally around the hinge portion that extends approximately vertically, in the eyeglass frame 100 according to this embodiment, the tip of the temple portion 2 rotates so as to draw an arc around the convex portion 3a that is approximately horizontal.

At this time, the guide rib 4 slides from the second groove portion 62 and enters a state where it is inserted mainly into the first groove portion 61 of the groove portion 6 (see FIG. 4B).
Therefore, when the second magnetic body 5 is rotated relative to the first magnetic body 3, the guide rib 4 inserted into the groove portion 6 slides along the groove portion 6, thereby guiding the mounting portion 22, thereby preventing any wobble in the rotation of the temple portion 2.
In other words, the temple portion 2 can be rotated smoothly.

When the temple portion 2 is closed and reaches the folded position, the temple portion 2 is folded by being arranged in parallel behind the front portion 1.
At this time, the guide rib 4 slides from the first groove portion 61 and is inserted mainly into the third groove portion 63 of the groove portion 6 (see FIG. 4B).

6(a) is a top view showing the eyeglass frame shown in FIG. 1(a) in a folded state, and FIG. 6(b) is a bottom view showing the eyeglass frame shown in FIG. 1(a) in a folded state.
6(a) and 6(b), in the eyeglass frame 100, when the temple portions 2 are in a folded position where the temple portions 2 are completely closed, the temple portions 2 are disposed behind the front portion 1 so that the convex side of the arch-shaped temple portions 2 faces the front portion 1. In other words, when viewed from above, the arch-shaped temple portions 2 and the arch-shaped front portion 1 are curved in the same direction.

This makes the eyeglass frame 100 compact.
Moreover, by rotating the temple portion 2 in an arc and by making the curved directions of the front portion 2 and the temple portion 1 coincident with each other, the design is made more excellent.
In addition, since the middle portion of the eyeglass frame 100 is thin, it has the advantage of being easy to store in a breast pocket, etc., and is also less likely to be damaged if it is accidentally dropped or stepped on, etc. Incidentally, a typical eyeglass frame has a convex lens shape when viewed from above, including the front portion and temple portions.
In addition, by rotating the temple portion 2 to the folded position, it is possible to store the glasses in a case or the like.
In this case, the temple portion 1 is not separated from the front portion 2, so that loss of parts can be prevented.

The above describes a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment.

In the eyeglass frame 100 of this embodiment, the front portion 1 has left and right rim portions 10, a bridge portion 11, a nose pad portion 12, and a visor portion 14, but these are not required, and their structures are not limited to those shown in the figures.
For example, the front portion 1 may have a so-called rimless structure, which has only a lens and no rim, or may have a structure without nose pads, which does not have the nose pad portion 12.
In addition, the nose pad portion 12 of the front portion 1 is formed by bulging the inner wall of the rim portion 10 inward, but it may be formed by providing a separate nose pad to the rim portion 10.
Similarly, the temple portion has a main body portion 21, but the structure thereof is not limited to that shown in the figure.

In the eyeglass frame 100 according to this embodiment, a first magnetic body is used as the first connecting portion, and a second magnetic body is used as the second connecting portion, but this is not limited to this.
For example, a shaft center may be provided as the first connecting portion, and a bearing portion that rotates about the shaft center may be provided as the second connecting portion.
In this case, when the bearing portion is attached to the shaft center and connected, the temple portion 2 is connected to the front portion 1, and this state is maintained.

In the eyeglass frame 100 according to this embodiment, the first magnetic body 3 and the second magnetic body 5 are both cylindrical, but are not limited thereto, and may be, for example, polygonal prism, cone, truncated cone, polygonal pyramid, polygonal pyramid, etc. However, they need to have magnetic surfaces that can be magnetically attached to each other.
In this case, the shape of the embedded blind hole corresponds to the shape of the magnetic material.
Furthermore, although the convex portion 3a is formed on the first magnetic body 3 and the concave portion 5a is formed on the second magnetic body 5, this may be reversed.
That is, the first magnetic body 3 may have a concave portion, and the second magnetic body 5 may have a convex portion.

In the eyeglass frame 100 according to this embodiment, the magnetic surfaces of the first magnetic body 3 and the second magnetic body 5 are exposed, but they do not have to be exposed as long as they can exert a sufficient magnetic force. In other words, they may be built into the end portion 13 and the mounting portion 22, respectively.

In the eyeglass frame 100 according to this embodiment, the guide rib 4 is provided on the overhanging portion 14 on the end portion 13 side, but this is not essential.
Similarly, although the groove 6 is provided in the mounting portion 22, this is not essential.

The eyeglass frame of the present invention can be used as so-called eyeglasses by mounting a pair of lenses thereon.
Also, if the lenses are not attached, the glasses can be used as a fashion eyeglass frame.
The eyeglass frame of the present invention has a simple structure, is resistant to breakage, and has an excellent design.

REFERENCE SIGNS LIST 1: Front portion 10: Rim portion 11: Bridge portion 12: Nose pad portion 13: End portion 14: Visor portion 100: Eyeglass frame 2: Temple portion 21: Main body portion 21a: Middle portion 21b: Ear hook portion 22: Mounting portion 22a: Semicircular portion 22b: Base portion 3: First magnetic body (first connecting portion)
3a...Convex portion 4...Guide rib 4a...Lower end portion 4b...Protrusion portion 5...Second magnetic body (second connecting portion)
5a...Concave portion 6...Groove portion 61...First groove portion 62...Second groove portion 63...Third groove portion 6a...Deep groove portion

Claims (9)

1. A spectacle frame having a front part on which a pair of lenses can be attached and a pair of temple parts attached to the front part,
   The back surfaces of the ends on both sides of the front portion are inclined so as to face inward,
   A first connecting portion is provided on the rear side of each of the ends,
   The temple portion has a main body portion and an attachment portion provided so as to be continuous with a front end of the main body portion,
   The mounting portion is bent inward from the longitudinal direction of the main body portion when viewed from above,
   A second connecting portion is provided on an outer surface side of the mounting portion,
   An eyeglass frame in which the temple portion is attached to the front portion when the second connecting portion is connected to the first connecting portion.
2. 2. The eyeglass frame according to claim 1, wherein the angle between the direction of the rear surface of one end of the front portion and a straight line connecting the left and right ends is a degree, and the following condition is satisfied:
   30≦a≦60
3. When the two are connected to each other, the second connecting portion is rotatable relative to the first connecting portion,
   2. The eyeglass frame according to claim 1, wherein the temple portions are folded by pivoting in an arc below the front portion from a use position in which the temple portions are open relative to the front portion and being positioned behind the front portion.
4. The eyeglass frame of claim 3, wherein, in the folded position, the temples are arranged in parallel with the front section, and the convex side of the arch-shaped temples faces the front section.
5. the first coupling portion is a first magnetic body,
   the second coupling portion is a second magnetic body,
   The connection is by magnetic attraction,
   When the second magnetic body is magnetically attached to the first magnetic body, the temple portion is attached to the front portion.
   The eyeglass frame according to any one of claims 1 to 4, wherein the temple portion is detached from the front portion when the second magnetic body is separated from the first magnetic body.
6. One of the first magnetic body and the second magnetic body has a convex portion formed at the center of a magnetic surface, and the other has a concave portion formed at the center of a magnetic surface,
   The convex portion is insertable into the concave portion,
   6. The eyeglass frame according to claim 5, wherein the second magnetic body is rotatable relative to the first magnetic body with the convex portion as an axis.
7. The mounting portion has a groove formed therein,
   A rearwardly extending eaves portion is formed at the upper end of the end portion, and a guide rib is provided on the eaves portion.
   The eyeglass frame according to any one of claims 1 to 4, wherein the guide rib is inserted into the groove during the connection.
8. The mounting portion has a semicircular trapezoidal shape in side view, in which a semicircular portion and a rectangular base portion are continuous with each other,
   The groove portion is formed so as to be continuous with the entire circumferential direction of the side surface of the semicircular portion and with at least a part of the upper and lower side surfaces of the base portion,
   The guide rib is provided so as to hang down from a rear end of the eave portion,
   The eyeglass frame of claim 7, wherein when the second connecting portion is connected to the first connecting portion and rotated relative to the first connecting portion, the mounting portion is guided by the guide rib inserted into the groove moving along the groove.
9. The lower end of the guide rib is curved into an inverted U-shape,
   A downwardly protruding portion is formed on the outer end of the guide rib,
   A deep groove portion continuous with the groove portion is formed on the upper side surface of the base portion,
   The eyeglass frame according to claim 8, wherein, in a use position where the temple portions are open relative to the front portion, the protrusions are press-fitted into the deep grooves, thereby temporarily fixing the temple portions.

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