Spectacle frame

Abstract

To provide a spectacle frame that allows a lens holding frame to be firmly secured to a front frame with no backlash, and that achieves a frame design with a sense of unity.SOLUTION: A spectacle frame is configured to include: a lens holding frame in which right and left rims are connected by a central bridge and a boundary portion between an upper chord portion and a lower chord portion is formed in each of the right and left rims; and a front frame which includes a hood portion at a position corresponding to each of the right and left rims of the lens holding frame and in which a recessed groove into which the upper chord portion or the lower chord portion of each of the right and left rims can be fitted in a vertical direction is formed on a lower surface or upper surface side of the hood portion. The spectacle frame is configured such that, by embedding magnets in a corner portion formed outside the upper chord portion or the lower chord portion of the right and left rims and in a back surface side of the hood portion, 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, an outer contour of the upper chord portion or the lower chord portion in a front view is formed linearly in the vertical direction from the boundary portion to the corner portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[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 the lens holder frame can be detachably fixed to the 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 into 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, which means that 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 groove 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 making it easy to replace the lens (see Patent Document 4). However, with the structure of this conventional technology, the area of ​​the magnet could not be made larger than the thickness of the lens, so the attraction force was weak and it was difficult to firmly fix the lens. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3216991 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-88538 [Patent Document 3] Patent No. 6529067 [Patent Document 4] Special Publication No. 2009-524081 Summary of the Invention [Problem to be solved by the invention]

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

[0008] As a means for solving the above-mentioned problems, the present 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 in which 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 in which a hood portion 21 is provided at a position corresponding to the left and right rims 11 of the lens holding frame 1 and a recessed groove 21a is formed on the lower or upper surface 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 11a or the lower chord 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 11a or the lower chord 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 a natural, integrated design 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 retaining frame 1 are formed from a synthetic resin material, and the bridge 12 of the lens retaining frame 1 is formed from a metal material, making it easier to visually confirm the relative positional relationship between the bridges of the lens retaining frame 1 and the front frame 2. Furthermore, using a metal material for the bridge 12 of the lens retaining frame 1 makes it less likely for the left and right rims 11 to twist, allowing the lens retaining 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 portion 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 when viewed from the front can be formed in a straight line in the vertical direction from the boundary portion 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 only of 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. [Effects of the Invention]

[0015] The present invention according to claim 1 forms corners on the lens holder frame that fits into the hood part of the front frame, and has magnets embedded in the corners of this lens holder frame and in the back of the hood part of the front frame, so that the lens holder frame can be detachably fixed 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 claim 6 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 this lens and in the back surface of the hood portion of the front frame, so that the lens holder frame can be detachably fixed by magnetic attraction while fitted into the front frame. Also, by forming the outline from the corners of the lens to the boundary between the upper and lower chord portions 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. [Brief explanation of the drawings]

[0018] [Figure 1]1A and 1B are an overall front view and an overall side view showing an eyeglass frame according to a first embodiment of the present invention. [Figure 2] 1A is a front view of the entire lens holding frame of an eyeglass frame according to a first embodiment of the present invention, and FIG. 1B is a front view of the entire front frame thereof. [Figure 3] 2A and 2B are XX and YY end views showing a state in which a lens holding frame is attached to a front frame according to a first embodiment of the present invention. [Figure 4] 10A and 10B are an overall front view and an overall side view, respectively, showing an eyeglass frame according to a second embodiment of the present invention. [Figure 5] FIG. 10 is an overall front view showing a lens holding frame according to a second embodiment of the present invention. [Figure 6] FIG. 10 is an overall front view showing a lens holding frame according to a third embodiment of the present invention. [Figure 7] FIG. 10 is an overall front view showing a lens holding frame according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] "First embodiment" A first embodiment of the present invention will be described with reference to Figs. 1 to 3. In the drawings, 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. 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] "Eyeglass frame composition" [1] Basic structure of eyeglass frames The basic structure 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 portion 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 portion 11b (a portion that is exposed below the hood portion 21) on the lower side. The upper chord portion 11a and the lower chord portion 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 portions 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 portion 21 into which the upper chord portions 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 between the left and right rims 11 of the lens holder frame 1 also serve as the boundaries separating the lower chord portions 11b of the left and right rims 11 from the hood portion 21 when the lens holder frame 1 is attached as shown in Figures 1(a) and 1(b).

[0023] 2(a) and 3(a), corner portions 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 corner portions. Meanwhile, as shown in FIGS. 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 corner portions C of the left and right rims 11 of the lens holding frame 1 are disposed. 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 positions 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 straight line in the vertical direction 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 parts of the upper chord portions 11a of the left and right rims 11 and the outer parts 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 they are arranged top to bottom, left to right, and therefore a strong attractive force can be obtained.

[0026] [2] Shape of the lens holder and front frame [2-1] Shape of the left and right rims of the lens holder Next, each component of the eyeglass frame F will be described in detail. In this embodiment, as shown in Fig. 2(a), the left and right rims 11 of the lens holder frame 1 have an upper chord portion 11a and a lower chord portion 11b, and are in a full-frame configuration (enclosing 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. 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 holder frame 1 will be referred to as a thick-frame type K to distinguish it from a thin-frame type described later).

[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 when viewed from the front a smooth curve or straight line without any steps, thereby allowing the eyeglass frame F to have a natural, integrated design when fitted with the thick-frame type K lens holding frame 1.

[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, or round shape can also be used. 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 for rim shapes that are closer to square than round shapes (such as a square shape or a Wellington shape).

[0030] [2-2] Shape of the hood part 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] Example of changing the left and right rims of the lens holder frame and the hood part 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, it is also possible to insert the lens retaining frame 1 from the top to the bottom of the front frame 2. Specifically, the front frame 2 can be made to have an under-rim shape (a half-rim type with only the bottom), and grooves 21a can be formed on the upper surface of the hood section 21 into which the lower chord sections 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 corners C formed on the outside of the lower chord sections 11b of the left and right rims 11 and in the back side of the hood section 21, eliminating the risk of them falling off. In addition, by forming the outer contour of the lower chord section 11b in a vertically linear manner from the boundary section B1 to the corners C in a front view, a slide guide effect can be obtained.

[0032] [2-4] Shape of the lens holder and front frame bridge 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 retainer 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 retainer frame 1 are fitted into the hood portion 21 of the front frame 2 as shown in FIG. 1(a), the bridge 22 of the front frame 2 is hidden behind the bridge 12 of the lens retainer frame 1 in a front view. Furthermore, by aligning the positions of the lower edges of both bridges 12 and 22, the bridge 12 of the lens retainer frame 1 can be pushed upward to the position of the bridge 22 of the front frame 2, allowing the lens retainer frame 1 to be securely attached to the front frame 2.

[0033] 3(b), the rear side of the bridge 22 of the front frame 2 is formed with a notch, and a convex portion formed on the upper rear side of the bridge 22 hides the bridge 12 of the lens retaining frame 1 in a plan view. This results in a shape that does not impair the sense of unity between the lens retaining 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 retaining frame 1 can be stopped in the appropriate position when pressed upward. Note that if the front frame 2 is configured as an under-rim type, the notch shape of the bridge 22 can also be reversed upside down.

[0034] [3] Materials for the lens holder and front frame [3-1] Materials for the left and right rims of the lens holder frame and the hood part of the front frame Next, the materials used for the lens holder 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 holder frame 1 and the entire front frame 2. However, these synthetic resin materials can be acetate resin, nylon resin, polyimide resin, or other resins commonly used for plastic frames. Metal materials can also be used for parts other than the part where the magnet M is embedded. In this case, titanium, titanium alloy, nickel silver, aluminum, gold, stainless steel, or other materials commonly used for metal frames can be used. A combination frame made of a synthetic resin material and a metal material can also be used.

[0035] [3-2] Lens holder bridge material In this embodiment, a metal material is used for the bridge 12 of the lens holder frame 1. As a result, the bridges 12 and 22 of the lens holder frame 1 and the front frame 2 are made of different materials, making it easier to visually confirm the arrangement 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 holder frame 1 as in this embodiment, torsional deformation of the bridge 12 is less likely to occur when the lens holder frame 1 is attached, allowing the lens holder frame 1 to be smoothly attached to the front frame 2. It is also possible to use a synthetic resin material for the bridge 12 of the lens holder frame 1 and mold it integrally with the left and right rims 11. In this case, changing the color from the bridge 22 of the front frame 2 makes it easier to visually confirm the arrangement of the bridges 12 and 22.

[0036] [4] About 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 from 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 limitations 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 in 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 embedding and attaching the magnets by adhesive or the like in 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 called 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. As with 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 the same.

[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, left and right lenses L are connected by a central bridge 12 to form a lens holding frame 1, and a step 11c is formed in the width direction of the lenses L at the boundary B1 between the outer edges of the upper and lower chords of the left and right lenses L. Furthermore, corners C are formed on the outer edges of the upper chords E of the left and right lenses L, and the outer contour of the upper chords 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 chords 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 then the lens holding frame 1 can be attached and detached without rattle simply by sliding the upper chords E up and down along the grooves 21a. Note that, in the lens holding frame 1 of this embodiment, no step is formed in the thickness direction of the lenses L at the boundary B1 / B2 between the outer and inner edges.

[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 has a shape in which a recessed groove 21a is formed on the underside of this hood portion 21 into which the upper chord portions E of the left and right lenses L can be fitted in the vertical direction. Also, in this embodiment, as shown in Fig. 6, magnets M are embedded in the corner portions 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 the lens holding frame 1 not require left and right rims, but by attaching the lens holding frame 1 to the front frame 2, half-rim type eyeglasses can be configured 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 at 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 consisting only of the lower chord portions 11b are connected by a central bridge 12 to form the lens holder frame 1, and lenses L shown in FIG. 6 are attached to the left and right rims 11. This allows for a natural-looking full-rim eyeglasses design by attaching the lens holder frame 1 to the front frame 2, and allows for easy changes to the lens L and frame design by replacing the lens holder frame 1. Note that if the front frame 2 is changed to an under-rim type, the lens holder frame 1 can be constructed from left and right rims 11 consisting only of the upper chord portions, 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. [Explanation of symbols]

[0044] 1 Lens holding frame 11 Left and right rims 11a Upper chord 11b Waning string 11c Step 12 Bridge 2 Front frame 21 Food Section 21a Groove 21b Bottom end 22 Bridge F eyeglass frame T Temple M magnet B Boundary C Corner L Lens K thick frame type N Thin Frame Type

Claims

1. a lens holding frame in which left and right rims are connected by a central bridge and boundaries between upper and lower chord portions are formed on the left and right rims; a front frame provided with a hood portion at a position corresponding to the left and right rims of the lens holding frame, and a recessed groove formed on the lower or upper surface of the hood portion into which the upper or lower chord portions of the left and right rims can be fitted in the up and down direction, Magnets are embedded in the corners formed on the outside of the upper chord or lower chord of the left and right rims and on the back side of the hood, and the lens holding frame and the front frame are configured to be detachable by the magnets, An eyeglass frame in which the outer contour of the upper chord or lower chord when viewed from the front on the left and right rims of the lens holding frame is formed in a straight line in the vertical direction from the boundary portion to the corner portion.

2. 2. The eyeglass frame of 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 portion 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, so that the outline of that portion in a front view becomes a smooth curve or straight line.

3. 3. The eyeglass frame according to 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 ends of the hood portion and the stepped portions of the left and right rims abut against each other, so that the front surfaces of the corresponding portions are flush with each other.

4. 3. The eyeglass frame according to claim 1, 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. 3. The eyeglass frame according to claim 1, wherein the front frame and the left and right rims of the lens holding frame are made of a synthetic resin material, and the bridge of the lens holding frame is made of a metal material.

6. the lens holding frame in which the left and right lenses are connected by a central bridge and in which boundaries between upper and lower chord portions are formed on the left and right lenses; a front frame provided with hood portions at positions corresponding to the left and right lenses of the lens holding frame, and having grooves formed on the lower or upper surface of the hood portion into which the upper or lower chord portions of the left and right lenses can be fitted in the up-and-down direction; Magnets are embedded in the corners formed on the outer sides of the upper and lower chords of the left and right lenses and on the back side of the hood section, and the lens holding frame and the front frame are configured to be detachable by the magnets, An eyeglass frame in which the outer contour of the upper chord or lower chord when viewed from the front of the left and right lenses of the lens holding frame is formed in a straight line in the vertical direction from the boundary portion to the corner portion.

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

Images