Spectacle frame

Abstract

[Problem] To provide a spectacle frame that makes it possible to firmly secure a lens holding frame to a front frame with no backlash and achieve a frame design with a sense of unity. [Solution] This spectacle frame is configured to include: a lens holding frame in which left and right rims are connected by a central bridge and a boundary part between an upper chord part and a lower chord part is formed in each of the left and right rims; and a front frame which is provided with a hood part at a position corresponding to each of the left and right rims of the lens holding frame and in which a recessed groove into which the upper chord part or the lower chord part of each of the right and left rims can be fitted in a vertical direction is formed on the lower surface or upper surface side of the hood part. The spectacle frame is configured such that, by embedding magnets in a corner part formed outside the upper chord part or the lower chord of each of the right and left rims and in the back surface side of the hood part, respectively, the lens holding frame and the front frame can be freely attached and detached by the magnets, and is configured such that in each of the right and left rims of the lens holding frame, the outer contour of the upper chord part or the lower chord part in front view is formed linearly in the vertical direction from the boundary part to the corner part.

Description

eyeglass frames

[0001] The present invention relates to eyeglass frames with changeable frame designs.

[0002] While it is possible to change the lens power and color of eyeglasses and sunglasses, it is difficult to change the lens shape or frame design, which means that people have to own multiple eyeglasses with different designs. Therefore, eyeglass frames have been known in the past that allow the frame design to be easily changed by simply replacing the lens holder frame, by configuring the lens holder frame to be detachable from the front frame.

[0003] For example, Patent Document 1 describes an eyeglass frame in which a lens holder frame can be detachably fixed to a bridge portion of the front frame. However, this conventional eyeglass frame has the drawback that the lens holder frame and the front frame are separated in areas other than the bridge where the lens holder frame and the front frame are fixed, making it difficult to create a sense of unity in the frame design.

[0004] Meanwhile, structures have also been proposed in which the lens holder frame is fitted and fixed in the hood portion of the front frame (see Patent Documents 2 and 3). However, these conventional eyeglass frames have a structure in which a convex portion is provided on the lens holder frame and this convex portion is fitted or screwed into a groove in the hood portion, so the hood portion of the front frame must be significantly deformed to attach the lens holder frame, making it difficult to attach smoothly.

[0005] Furthermore, a conventional technology has been known in which magnets are provided in the grooves of the rim of the front frame and on the outer periphery of the lens, and the lens is fixed to the front frame by the magnetic attraction, thereby facilitating lens replacement (see Patent Document 4). However, in this conventional structure, the area of ​​the magnet could not be made larger than the thickness of the lens, so the magnetic attraction was weak and it was difficult to securely fix the lens.

[0006] Utility Model Registration No. 3216991 JP 2013-88538 A Japanese Patent No. 6529067 A Specific Table 2009-524081 A

[0007] The present invention aims to solve the problems of the above-mentioned conventional technology, and in summary, to provide eyeglass frames that allow the lens holding frame to be smoothly attached to the front frame, and that allow the lens holding frame to be firmly fixed to the front frame without any rattle, and that also allow for a frame design with a sense of unity.

[0008] As a means for solving the above-mentioned problems, the inventor has proposed a spectacle frame F including a lens holding frame 1 in which left and right rims 11 are connected by a central bridge 12 and a boundary B1 between an upper chord portion 11a and a lower chord portion 11b is formed on the left and right rims 11, and a front frame 2 which is provided with a hood portion 21 at a position corresponding to the left and right rims 11 of the lens holding frame 1 and has a recessed groove 21a formed on the underside or upper side of the hood portion 21 into which the upper chord portion 11a or the lower chord portion 11b of the left and right rims 11 can be fitted in the vertical direction. Meanwhile, magnets M are embedded in the corners C formed on the outside of the upper chord portion 11a or the lower chord portion 11b of the left and right rims 11 and on the back side of the hood portion 21, so that the lens holding frame 1 and the front frame 2 can be attached and detached freely using the magnets M, and the left and right rims 11 of the lens holding frame 1 have a configuration in which the outer contour of the upper chord portion 11a or the lower chord portion 11b in a front view is formed in a straight line in the vertical direction from the boundary portion B1 to the corners C (the effect will be described later).

[0009] Furthermore, in the present invention, the lower chord portions 11b of the left and right rims 11 of the lens holding frame 1 are formed thicker than the upper chord portion 11a, forming a step portion 11c at the boundary portion B1 thereof, and when the left and right rims 11 of the lens holding frame 1 are fitted into the hood portion 21 of the front frame 2, the lower end 21b of the hood portion 21 abuts against the step portions 11c of the left and right rims 11, making the outline of that portion in a front view a smooth curve or straight line, thereby giving the eyeglass frame F an integrated design that does not feel unnatural when the lens holding frame 1 is attached.

[0010] Furthermore, in the present invention, when the left and right rims 11 of the lens holding frame 1 are fitted into the hood portion 21 of the front frame 2, the lower end 21b of the hood portion 21 abuts against the step portions 11c of the left and right rims 11, making the front surfaces of the relevant areas flush, thereby giving the eyeglass frame F an integrated design that does not feel unnatural when the lens holding frame 1 is attached.

[0011] Furthermore, in the present invention, the lens holding frame 1 is composed of left and right rims 11 and a bridge 12 connecting them, and when the left and right rims 11 of the lens holding frame 1 are fitted into the hood portion 21 of the front frame 2, the upper and lower positions of the lower edge of the bridge 12 of the lens holding frame 1 and the lower edge of the bridge 22 of the front frame 2 are aligned, so that the bridge 12 of the lens holding frame 1 can be pushed up to the position of the bridge 22 of the front frame 2 and attached in the appropriate position.

[0012] Furthermore, in the present invention, the front frame 2 and the left and right rims 11 of the lens holder frame 1 are formed from a synthetic resin material, and the bridge 12 of the lens holder frame 1 is formed from a metal material, making it easier to visually confirm the relative positional relationship between the bridges of the lens holder frame 1 and the front frame 2. Furthermore, using a metal material for the bridge 12 of the lens holder frame 1 makes it less likely for the left and right rims 11 to twist, allowing the lens holder frame 1 to be attached to the front frame 2 smoothly.

[0013] On the other hand, in the present invention, instead of the configuration of the above-mentioned eyeglass frame F, the eyeglass frame is configured to include the lens holding frame 1 in which the left and right lenses L are connected by a central bridge 12 and a boundary B1 between the upper chord portion E and the lower chord portion is formed on the left and right lenses L, and a front frame 2 which is provided with a hood portion 21 at a position corresponding to the left and right lenses L of the lens holding frame 1 and has a groove 21a formed on the underside or upper side of this hood portion 21 into which the upper chord portion E or the lower chord portion of the left and right lenses L can be fitted in the vertical direction, while magnets M are embedded in the corner portions C formed on the outside of the upper chord portion E or the lower chord portion of the left and right lenses L and on the back side of the hood portion 21, so that the lens holding frame 1 and the front frame 2 can be freely attached and detached using the magnets M, and the outer contour of the upper chord portion E or the lower chord portion of the left and right lenses L of the lens holding frame 1 can be formed in a straight line in the vertical direction from the boundary B1 to the corner portion C (the effect will be described later).

[0014] Furthermore, in the present invention, the lens holding frame 1 is configured by connecting left and right rims 11 consisting of only the lower chord portion 11b or the upper chord portion 11a with a central bridge 12, and by attaching lenses L to the left and right rims 11, the lens holding frame 1 can be replaced to give the eyeglass frame F a full-rim design.

[0015] According to the first aspect of the present invention, corners are formed on the lens holder frame that fits into the hood section of the front frame, and magnets are embedded in the corners of the lens holder frame and in the back surface of the hood section of the front frame, so that the lens holder frame can be detachably fixed in place by magnetic attraction when fitted into the front frame. This allows the lens holder frame to be replaced, making it easy to change lenses and frame designs.

[0016] Furthermore, in this invention, the magnets are arranged in the front-to-rear direction, which increases the area of ​​the magnets, allowing the lens holder frame to be firmly fixed. Furthermore, by forming the contours from the corners of the lens holder frame to the boundary between the upper and lower chords of the rim in a straight line in the vertical direction, the lens holder frame can be easily attached and detached without any rattle in the vertical direction. Furthermore, the front frame and lens holder frame create a frame design that has a sense of unity from left to right.

[0017] According to the sixth aspect of the present invention, corners are formed on the lens that is fitted into the hood portion of the front frame, and magnets are embedded in the corners of the lens and in the back surface of the hood portion of the front frame, so that the lens holder frame can be detachably fixed to the front frame by magnetic attraction when fitted into the front frame. Also, by forming the outline from the corners of the lens to the boundary between the upper and lower chords of the lens in a straight line in the vertical direction, the lens holder frame can be easily attached and detached without any rattle in the vertical direction.

[0018] FIG. 1 is a general front view and a general side view showing an eyeglass frame according to a first embodiment of the present invention; FIG. 2 is a general front view of a lens holding frame and a general front view of a front frame in an eyeglass frame according to the first embodiment of the present invention; FIG. 3 is a general front view and a general side view showing an eyeglass frame according to a second embodiment of the present invention; FIG. 4 is a general front view of a lens holding frame according to a third embodiment of the present invention; and FIG. 5 is a general front view of a lens holding frame according to a fourth embodiment of the present invention.

[0019] "First Embodiment" A first embodiment of the present invention will be described with reference to Figures 1 to 3. In the figures, the symbol F indicates the eyeglass frame, and the symbol T indicates the temples. The symbol 1 indicates the lens holding frame, and the symbol 2 indicates the front frame. The symbol C indicates the corners of the left and right rims, and the symbol B indicates the upper and lower boundaries of the left and right rims. The symbol M indicates a magnet. Note that the left-right direction, the up-down direction, and the front-back direction described in this specification all refer to directions when viewed from the front.

[0020] "Configuration of eyeglass frame" [1] Basic configuration of eyeglass frame The basic configuration of the eyeglass frame F of this embodiment will be described. In this embodiment, as shown in Figures 1(a)(b) and 2(a)(b), the eyeglass frame F is composed of a lens holding frame 1 with left and right rims 11 to which lenses are attached, and a front frame 2 to which temples T are connected on both the left and right sides. As shown in Figures 1(a)(b) and 3(a), the left and right rims 11 of the lens holding frame 1 are fitted vertically into the hood portion 21 of the front frame 2, and the two are fixed together by a magnet M, making the lens holding frame 1 detachable.

[0021] 2(a), the lens holding frame 1 is configured by connecting left and right rims 11 with a central bridge 12, and has an upper chord 11a (a portion that fits into the hood portion 21) on the upper side of the left and right rims 11, and a lower chord 11b (a portion that is exposed below the hood portion 21) on the lower side. The upper chord 11a and lower chord 11b of the left and right rims 11 are separated by boundaries B1 and B2 formed on the outside and inside of the left and right sides.

[0022] On the other hand, as shown in Figure 2(b), the front frame 2 is configured by providing left and right hood sections 21 at positions corresponding to the left and right rims 11 of the lens holder frame 1 and connecting these with a central bridge 22, and by forming grooves 21a on the underside of each hood section 21 into which the upper chord sections 11a of the left and right rims 11 are fitted, as shown in Figures 2(b) and 3(a). Note that the boundaries B1 and B2 of the left and right rims 11 of the lens holder frame 1 also serve as the boundaries that separate the lower chord sections 11b of the left and right rims 11 from the hood section 21 when the lens holder frame 1 shown in Figures 1(a) and 1(b) is attached.

[0023] 2(a) and 3(a), corners C are formed on the outside of the upper chord portion 11a of the left and right rims 11 of the lens holding frame 1, and magnets M are embedded in these corners. Meanwhile, as shown in Figures 2(b) and 3(a), magnets M are embedded in the hood portion 21 of the front frame 2 on the back side of the recessed grooves 21a in which the corners C of the left and right rims 11 of the lens holding frame 1 are located. This allows the magnets M embedded in the left and right rims 11 and the hood portion 21 to attract each other, thereby fixing the position of the left and right rims 11 fitted into the hood portion 21.

[0024] Furthermore, in this embodiment, the outer contour of the upper chord portion 11a of the left and right rims 11 of the lens holder frame 1 in the front view of Figure 2(a) is formed in a vertically linear manner from the boundary portion B1 to the corner portion C, so that after inserting the corner portion C of the upper chord portion 11a of the left and right rims 11 from the lower end 21b of the hood portion 21 into the recessed groove 21a, the lens holder frame 1 can be attached and detached without any rattle by simply sliding the upper chord portion 11a up and down along the recessed groove 21a. In this case, the outer portions of the upper chord portions 11a of the left and right rims 11 and the outer portions of the recessed groove 21a of the hood portion 21 act as slide guides.

[0025] Furthermore, the magnets M embedded in the left and right rims 11 and hood portion 21 not only serve to secure the lens holder frame 1 in the state shown in Figure 3(a), but also serve to slide the lens holder frame 1 upward by the attractive force of the magnets M when the upper chord portions 11a of the left and right rims 11 are inserted into the recessed grooves 21a from the lower end 21b of the hood portion 21. This makes it possible to more smoothly attach the lens holder frame 1 to the front frame 2. Furthermore, by arranging both magnets M front to back as shown in Figure 3(a), the area of ​​the magnets can be made larger than when arranged top to bottom, left to right, and therefore a strong attractive force can be obtained.

[0026] [2] Shape of the Lens Retaining Frame and Front Frame [2-1] Shape of the Left and Right Rims of the Lens Retaining Frame Next, each component of the eyeglass frame F will be described in detail. In this embodiment, as shown in Figure 2(a), the left and right rims 11 of the lens retaining frame 1 have an upper chord portion 11a and a lower chord portion 11b, and are a full-frame type (a shape that surrounds the entire circumference of the lens). Furthermore, the lower chord portion 11b is formed thicker than the upper chord portion 11a, forming a step portion 11c in the thickness and width directions of the rim 11 at the outer boundary portion B1 of the left and right rims 11, and a step portion 11c in the thickness direction of the rim 11 at the inner boundary portion B2. Furthermore, the shape of this step portion 11c corresponds to the shape of the end face of the lower end 21b of the hood portion 21 (this lens retaining frame 1 is called a thick frame type K to distinguish it from the thin frame type described below).

[0027] With the above configuration, when the left and right rims 11 of the lens holding frame 1 are fitted into the hood portion 21 of the front frame 2 as shown in Figure 1(a), the lower end 21b of the hood portion 21 abuts against the step portions 11c of the left and right rims 11, making it possible to make the outline (frame line) of that part in a front view a smooth curve or straight line without any steps, thereby allowing the eyeglass frame F to have a natural, integrated design when the thick-frame type K lens holding frame 1 is attached.

[0028] Furthermore, in this embodiment, when the left and right rims 11 of the lens holding frame 1 are fitted into the hood portion 21 of the front frame 2 as shown in Figure 1(b), the lower end 21b of the hood portion 21 abuts against the step portions 11c of the left and right rims 11, making it possible to make the front surface of that area flush, thereby allowing the eyeglass frame F to have a more natural, integrated design when the thick-frame type K lens holding frame 1 is attached.

[0029] In this embodiment, the left and right rims 11 of the lens holding frame 1 are in a Boston shape, but other rim shapes such as a Wellington shape, oval shape, square shape, round shape, etc. In this specification, the upper portion is referred to as the upper chord portion 11a and the lower portion is referred to as the lower chord portion 11b, even if the rim shape is not only round but also closer to a square shape (such as a square shape or a Wellington shape).

[0030] [2-2] Shape of the Hood Portion of the Front Frame As shown in FIG. 2(b), the hood portion 21 of the front frame 2 has a half-rim shape corresponding to the upper chord portions 11a of the left and right rims 11 of the lens holder frame 1 when viewed from the front. The underside (the lens mounting side) of the hood portion 21 has grooves 21a into which the upper chord portions 11a of the left and right rims 11 are fitted. The shape of the grooves 21a of the hood portion 21 corresponds to the contours of the upper chord portions 11a of the left and right rims 11, and the groove bottoms on the left and right outer sides are formed linearly in the vertical direction. This allows the upper chord portions 11a and the left and right outer sides of the grooves 21a to function as slide guides. Furthermore, the groove width of the grooves 21a of the hood portion 21 corresponds to the thickness of the left and right rims 11, as shown in FIG. 3(a), preventing rattling of the lens holder frame 1.

[0031] [2-3] Modifications to the Left and Right Rims of the Lens Retaining Frame and the Hood of the Front Frame In this embodiment, the lens retaining frame 1 is inserted from the bottom to the top of the front frame 2. However, a structure in which the lens retaining frame 1 is inserted from the top to the bottom of the front frame 2 can also be adopted. Specifically, the front frame 2 can be made to have an under-rim shape (a half-rim type with only the bottom side), and the upper surface of the hood portion 21 can be formed with a groove 21a into which the lower chord portions 11b of the left and right rims 11 can be fitted downward. This allows the lens retaining frame 1 to be fixed by embedding magnets M in the corners C formed on the outside of the lower chord portions 11b of the left and right rims 11 and in the back side of the hood portion 21, eliminating the risk of them falling off. Furthermore, by forming the outer contour of the lower chord portion 11b in a vertically linear manner from the boundary B1 to the corners C in a front view, a slide guide effect can be achieved.

[0032] [2-4] Shape of the Bridges of the Lens Retaining Frame and Front Frame In this embodiment, as shown in Figures 2(a) and 2(b), the position and shape of the lower edge of the bridge 12 connecting the left and right rims 11 of the lens retaining frame 1 are aligned with the lower edge of the bridge 22 connecting the hood portion 21 of the front frame 2, so that when the left and right rims 11 of the lens retaining frame 1 are fitted into the hood portion 21 of the front frame 2 as shown in Figure 1(a), the bridge 22 of the front frame 2 is hidden behind the bridge 12 of the lens retaining frame 1 in a front view. Also, by aligning the positions of the lower edges of both bridges 12 and 22, the bridge 12 of the lens retaining frame 1 can be pushed upward to the position of the bridge 22 of the front frame 2, allowing the lens retaining frame 1 to be securely attached to the front frame 2.

[0033] As shown in Figure 3(b), the rear side of the bridge 22 of the front frame 2 is cut out, and the bridge 12 of the lens holder frame 1 is hidden in a plan view by a convex portion formed on the upper rear side of the bridge 22. This results in a shape that does not impair the sense of unity between the lens holder frame 1 and the front frame 2. The convex portion formed on the upper rear side of the bridge 22 of the front frame 2 also functions as a stopper, so that the bridge 12 of the lens holder frame 1 can be stopped in the appropriate position when pressed upward. If the front frame 2 is designed to have an under-rim shape, the cutout shape of the bridge 22 can also be reversed upside down.

[0034] [3] Materials for the Lens Retaining Frame and Front Frame [3-1] Materials for the Left and Right Rims of the Lens Retaining Frame and the Hood Portion of the Front Frame Next, the materials for the lens retaining frame 1 and front frame 2 will be described. In this embodiment, a synthetic resin material is used for the left and right rims 11 of the lens retaining frame 1 and the entire front frame 2. These synthetic resin materials can be acetate resin, nylon resin, polyimide resin, or other materials commonly used for plastic frames. Metal materials can also be used for parts other than the embedded portion of the magnet M. In this case, common metal frame materials such as titanium, titanium alloy, nickel silver, aluminum, gold, and stainless steel can be used. A combination frame made of a synthetic resin material and a metal material can also be used.

[0035] [3-2] Lens Retaining Frame Bridge Material In this embodiment, a metal material is used for the bridge 12 of the lens retaining frame 1. This makes the bridges 12 and 22 of the lens retaining frame 1 and the front frame 2 composed of different materials, making it easier to visually confirm the position of the bridges 12 and 22. Furthermore, by using a metal material with greater rigidity than synthetic resin for the bridge 12 of the lens retaining frame 1 as in this embodiment, torsional deformation of the bridge 12 is less likely to occur when the lens retaining frame 1 is attached, allowing the lens retaining frame 1 to be smoothly attached to the front frame 2. Note that the bridge 12 of the lens retaining frame 1 can also be made of a synthetic resin material and molded integrally with the left and right rims 11. In this case, the position of the bridges 12 and 22 can be visually confirmed by changing the color from the bridge 22 of the front frame 2.

[0036] [4] Regarding the magnets, the magnets M embedded in the lens holder frame 1 and front frame 2 can be ferrite magnets, samarium-cobalt magnets, neodymium magnets, alnico magnets, or magnets made of other metals or alloys, as long as they have an attractive force that is at least sufficient to fix the position of the lens holder frame 1. There are no particular restrictions on the area of ​​the magnets M, as long as they are large enough to be embedded in the corners C formed in the upper chord portions 11a of the left and right rims 11 of the lens holder frame 1, as shown in Figure 2(a).

[0037] In this embodiment, as shown in Figure 3(a), magnets M are embedded in the rear sides of the left and right rims 11 of the lens holder frame 1 and the rear side of the hood portion 21 of the front frame 2, but the method of embedding the magnets M is not particularly limited, and methods such as embedding the magnets M during injection molding or attaching the magnets by gluing them into holes formed during molding can be used. Magnets M can also be embedded in the bridges 12 and 22 of the lens holder frame 1 and the front frame 2 as needed.

[0038] Second Embodiment Next, a second embodiment of the present invention will be described with reference to Figures 2(b), 4, and 5. In this embodiment, as shown in Figures 4(a), 4(b), and 5(a), the width of the lower chord portions 11b of the left and right rims 11 of the lens holder frame 1 is made smaller than the width of the upper chord portions 11a, forming a step portion 11c in the width direction of the rim 11 at the outer boundary portion B1 (this lens holder frame 1 is referred to as a thin-rim type N). This allows the outer contour of the upper chord portion 11a in a front view to be formed linearly in the vertical direction from the outer boundary portion B1 to the corner portion C. As in the first embodiment, the lens holder frame 1 can be attached and detached without rattle by simply inserting the corner portion C of the upper chord portions 11a of the left and right rims 11 from the lower end 21b of the hood portion 21 into the recessed groove 21a and then sliding the upper chord portion 11a up and down along the recessed groove 21a. In the thin-rim type N lens holding frame 1 of this embodiment, no step is formed in the thickness direction of the rim 11 at the boundary portions B1 and B2 between the outside and inside.

[0039] 4(a) and 4(b), the upper chord portion 11a of the lens retaining frame 1 is inserted into the recessed groove 21a of the hood portion 21 of the front frame 2, so that it is hidden in front and side views, allowing the eyeglass frame F equipped with the thin-rim type N lens retaining frame 1 to have a natural, integrated design. The shape of the lower chord portion 11b of the lens retaining frame 1 is not particularly limited as long as it is thin enough to form the step portion 11c. Similar to the first embodiment, the shape of the front frame 2 shown in FIG. 2(a), the fact that the front frame 2 can be changed to an under-rim type, and the fact that the materials of the lens retaining frame 1 and the front frame 2 can be changed are also possible.

[0040] Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. 2(b) and 6. In this embodiment, as shown in FIG. 6, the left and right lenses L are connected by a central bridge 12 to form the lens holder frame 1, and a step 11c is formed in the width direction of the lenses L at the outer boundary B1 between the upper and lower chords E of the left and right lenses L. Furthermore, corners C are formed on the outer side of the upper chord E of the left and right lenses L, and the outer contour of the upper chord E in a front view is linearly formed in the vertical direction from the boundary B1 to the corners C. As a result, as in the first embodiment, the corners C of the upper chord E of the left and right lenses L are inserted into the grooves 21a from the lower end 21b of the hood portion 21 of the front frame 2 shown in FIG. 2(b), and the lens holder frame 1 can be attached and detached without rattle simply by sliding the upper chord E up and down along the grooves 21a. Note that the lens holder frame 1 of this embodiment also does not have a step in the thickness direction of the lenses L at the outer and inner boundary B1 and B2.

[0041] The front frame 2 used in the eyeglass frame of this embodiment is the same as that shown in Fig. 2(b), and is provided with a hood portion 21 at a position corresponding to the left and right lenses L of the lens holding frame 1, and the underside of this hood portion 21 is formed with a recessed groove 21a into which the upper chord portions E of the left and right lenses L can be fitted in the vertical direction. In this embodiment, as shown in Fig. 6, magnets M are embedded in the corners C formed on the outside of the upper chord portions E of the left and right lenses L and on the back side of the hood portion 21, so that the lens holding frame 1 can be fixed by the attraction force between the magnets M.

[0042] Furthermore, with the above configuration, not only do left and right rims on the lens holding frame 1 become unnecessary, but by attaching the lens holding frame 1 to the front frame 2, half-rim type eyeglasses can be constructed that do not look out of place in the design and allow for easy replacement of the lenses L. Materials that can be used for the lenses L include polycarbonate resin, acrylic resin, polyester resin, and cyclic olefin polymer, which are common materials used in plastic lenses. Similar to the first embodiment, the front frame 2 can be changed to an under-rim type to form corners C on the lower chords of the lenses L, and the materials for the bridge 12 of the lens holding frame 1 and the front frame 2 can be changed.

[0043] Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIGS. 2(b) and 7. In this embodiment, as shown in FIG. 7, left and right rims 11, each consisting only of a lower chord portion 11b, are connected by a central bridge 12 to form a lens holder frame 1, and lenses L, as shown in FIG. 6, are attached to the left and right rims 11. By attaching the lens holder frame 1 to the front frame 2, a full-rimmed eyeglasses with a natural design can be constructed. Furthermore, the lens L and frame design can be easily changed by replacing the lens holder frame 1. If the front frame 2 is to be changed to an under-rim type, the lens holder frame 1 can be constructed from left and right rims 11 consisting only of an upper chord portion, and corners C can be formed on the lower chord portions of the lenses L. Furthermore, the left and right rims 11 of the lens holder frame 1 can be made of the same material as in the first embodiment.

[0044] 1 Lens holding frame 11 Left and right rims 11a Upper chord portion 11b Lower chord portion 11c Step portion 12 Bridge 2 Front frame 21 Hood portion 21a Groove 21b Lower end 22 Bridge F Eyeglass frame T Temple M Magnet B Boundary portion C Corner portion L Lens K Thick frame type N Thin frame type

Claims

1. A spectacle frame comprising: a lens holding frame in which left and right rims are connected by a central bridge and in which the left and right rims form a boundary between their upper and lower chords; and a front frame equipped with a hood portion at a position corresponding to the left and right rims of said lens holding frame, with a recessed groove formed on the underside or upper side of said hood portion into which the upper or lower chord portions of said left and right rims can be fitted in the vertical direction; wherein magnets are embedded in the corners formed on the outside of the upper or lower chord portions of said left and right rims and on the back side of said hood portion, allowing the lens holding frame and the front frame to be easily attached and detached; and wherein the outer contours of the upper or lower chord portions of the left and right rims of said lens holding frame are formed in a straight line in the vertical direction from the boundary portion to the corners when viewed from the front.

2. An eyeglass frame as claimed in claim 1, wherein the lower chord portions of the left and right rims of the lens holding frame are formed thicker than the upper chord portions, forming a step at the boundary between them, and when the left and right rims of the lens holding frame are fitted into the hood portion of the front frame, the lower end of the hood portion and the step portions of the left and right rims abut against each other, and the outline of that portion when viewed from the front is a smooth curve or straight line.

3. The eyeglass frame of claim 2, wherein when the left and right rims of the lens holding frame are fitted into the hood portion of the front frame, the lower end of the hood portion abuts against the stepped portions of the left and right rims, making the front surfaces of the portions flush.

4. An eyeglass frame as claimed in claim 1 or 2, wherein the lens holding frame is composed of left and right rims and a bridge connecting them, and when the left and right rims of the lens holding frame are fitted into the hood portion of the front frame, the lower edge of the bridge of the lens holding frame and the lower edge of the bridge of the front frame are aligned in the vertical direction.

5. The eyeglass frame according to claim 1 or 2, wherein the front frame and the left and right rims of the lens holder frame are made of synthetic resin material, and the bridge of the lens holder frame is made of metal material.

6. A spectacle frame comprising: a lens holding frame in which left and right lenses are connected by a central bridge and in which a boundary between the upper and lower chords is formed on the left and right lenses; and a front frame provided with a hood portion at a position corresponding to the left and right lenses of the lens holding frame, with a recessed groove formed on the underside or upper side of the hood portion into which the upper or lower chords of the left and right lenses can be fitted in the vertical direction; wherein magnets are embedded in the corners formed on the outside of the upper or lower chords of the left and right lenses and on the back side of the hood portion, allowing the lens holding frame and the front frame to be easily attached and detached; and wherein the outer contours of the upper or lower chords of the left and right lenses of the lens holding frame, when viewed from the front, are formed in a straight line in the vertical direction from the boundary to the corners.

7. The eyeglass frame according to claim 6, wherein the lens holding frame is configured by left and right rims consisting of only the lower chord portion or the upper chord portion, connected by a central bridge, and lenses attached to the left and right rims.

Images