Spectacles

Abstract

To provide flip-up spectacles capable of providing a comfortable fit to a wearer.SOLUTION: A holding frame holds a pair of first lenses. A front bar is arranged in front of the face of a wearer. A pair of nose pads comes into contact with the nose of the wearer. A pair of hinges supports the holding frame rotatably with respect to the front bar. The front bar includes a center part, a pair of end parts, and a connection part. The center part includes the center of the front bar in the width direction. The end parts are positioned to the end side of the center part in the width direction. The connection part has a shape that is inclined backward in the front-to-back direction on the front side of the front-to-back direction and connects the center part and the pair of end parts. The center part has a shape that the front-to-back dimension of which is larger than the front-to-back dimension of the end parts. The connection part has a shape in that the front-to-rear dimensions gradually decrease from the center to the ends in the width direction. The nose pads are provided to the center part. The hinges are fixed to the holding frame and the end parts respectively in a state adjacent to the connection part in the width direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to flip-up eyeglasses in which the lenses are in a flip-up state. [Background technology]

[0002] Patent Document 1 discloses flip-up eyeglasses. The eyeglasses include a holding frame, a front bar, and a hinge. The holding frame holds a first lens. The hinge supports the holding frame so that it can rotate freely. The front bar is formed by a first bar portion, a second bar portion, a first bent portion, a second bent portion, and a third bar portion. The second bar portion is curved or inclined rearward in the front-rear direction from the center side in the width direction to the end side. The first bent portion is connected to the first bar portion and is bent rearward in the front-rear direction. The second bent portion is connected to the second bar portion and is bent forward in the front-rear direction. The third bar portion connects the first bent portion and the second bent portion. The hinge includes a first link piece, a second link piece, and an axis portion. The first link piece is fixed to the second bar portion while being adjacent to the third bar portion in the width direction. The second link piece is fixed to the holding frame. The shaft portion connects the first link piece and the second link piece, and serves as a rotation shaft for the rotating second link piece. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-26957 A Summary of the Invention [Problem to be solved by the invention]

[0004] Flip-up glasses are used by an unspecified number of people. The shape of the face differs for each wearer. Examples of factors that specify the shape of the face include the width of the face, which is the target of the technology of Patent Document 1, as well as the unevenness of the face. Examples of the unevenness of the face include the height of the nose and the height of the cheeks. For example, some wearers have low noses, some have high cheeks, and some have low noses and high cheeks. Assume that the wearer has one or both of the characteristics of a low nose and high cheeks. In this case, when the wearer wears flip-up glasses without flipping up the lenses, the distance between the lenses and the wearer's face becomes narrow. As a result, a part of the glasses is likely to come into contact with the wearer's face. An example of a structure that holds the lens is a half-rim type. In this case, an example of a part of the glasses that is likely to come into contact with the wearer's face is the lens. An example of a structure that holds the lens is a full-rim type. In this case, an example of a part of the glasses that is likely to come into contact with the wearer's face is a holding part that holds the lens. The holding part is also called a rim. The inventors have studied a structure for flip-up eyeglasses that can prevent contact between a part of the eyeglasses and the wearer's face while preventing contact between the holding frame and the front bar, similar to Patent Document 1. In doing so, the inventors have taken into consideration the need to accommodate a wide range of wearers.

[0005] An object of the present invention is to provide flip-up eyeglasses that can provide a comfortable fit to the wearer. [Means for solving the problem]

[0006] One aspect of the present invention is a pair of flip-up eyeglasses in which a first lens is flipped up, the pair of eyeglasses comprising: a retaining frame that retains the first lens; a front bar that is arranged in front of a face of a wearer wearing the eyeglasses in a state in which the face of the wearer is crossed from left to right; nose pads that come into contact with the nose of the wearer; and hinges that are fixed to the retaining frame and the front bar, respectively, and that support the retaining frame rotatably relative to the front bar, the front bar having a central portion that includes a center in a width direction corresponding to the width of the face of the wearer of the front bar, end portions that are provided on the end side in the width direction from the central portion, and a pair of front and rear portions in front of and behind the wearer. and a connecting portion having a shape that is inclined toward the rear in the front-to-rear direction from the center side in the width direction to the end side, the connecting portion having a shape whose dimension in the front-to-rear direction is larger than the dimension in the front-to-rear direction of the end portion, the end portion having a shape that is inclined or curved toward the rear in the front-to-rear direction from the center side in the width direction to the end side, the connecting portion having a shape whose dimension in the front-to-rear direction gradually decreases from the center side to the end side in the width direction, the nose pads are provided in the central portion, and the hinges are fixed to the retaining frame and the end portion, respectively, adjacent to the connecting portion in the width direction.

[0007] According to these glasses, by providing the nose pads in the central portion of the front bar, the distance between the first lens and the wearer's eyes can be kept constant, while the nose pads can be positioned at the rear in the fore-aft direction. Effect of the Invention

[0008] According to the present invention, flip-up eyeglasses that can provide a comfortable fit to the wearer can be obtained. [Brief description of the drawings]

[0009] [Figure 1] 1 is a front view showing an example of a schematic configuration of eyeglasses. A pair of single flip-up eyeglasses is shown. The upper part shows a non-flip-up state. The lower part shows a flip-up state. The upper and lower parts show a state in which the temples are open. [Diagram 2]2 is a rear view of the eyeglasses of FIG 1. The upper part shows the non-flip-up state, the lower part shows the flip-up state, and the upper and lower parts show the temples in the open state. [Diagram 3] 2 is a plan view of the eyeglasses of FIG 1. The upper part shows the state in which the temples are open, and the lower part shows the state in which the temples are closed. The upper and lower parts show the non-flip-up state. [Figure 4] FIG. 2 is a plan view of the glasses of FIG. 1, showing the glasses in a flip-up state and with the temples open. [Diagram 5] FIG. 2 is a right side view of the eyeglasses of FIG. 1. The top diagram shows a non-flip-up state. The middle diagram shows a flip-up state. The bottom diagram shows a rotated state of a holding frame holding a first lens. The top, middle and bottom diagrams show a state in which the temple is open. [Figure 6] FIG. 2 is a left side view of the eyeglasses of FIG. 1. The top diagram shows a non-flip-up state. The middle diagram shows a flip-up state. The bottom diagram shows a rotated state of a holding frame holding a first lens. The top, middle and bottom diagrams show a state in which the temple is open. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the configurations described below, and various configurations can be adopted within the same technical idea. For example, some of the configurations shown below may be omitted or replaced with other configurations. The present invention may include other configurations. The drawings are explanatory diagrams for understanding the present invention and are different from design drawings. Each drawing may not correspond exactly to other drawings. The two-dot chain lines are imaginary lines.

[0011] <Glasses 10> The glasses 10 will be described with reference to Figs. 1 to 6. In the embodiment, the directions that specify the glasses 10 are called the "width direction", the "front-rear direction", and the "up-down direction". One end side in the width direction is called the "left side", and the other end side in the width direction is called the "right side". One side in the front-rear direction is called the "front side", and the other side in the front-rear direction is called the "rear side". One side in the up-down direction is called the "upper side", and the other side in the up-down direction is called the "lower side". The width direction, the front-rear direction, and the up-down direction are based on a wearer wearing the glasses 10. That is, the width direction corresponds to the width of the face of the wearer wearing the glasses 10. The left side in the width direction is the left side of the wearer, and the right side in the width direction is the right side of the wearer. The left and right in the width direction are opposite to the left and right when Fig. 1, which is a front view of the glasses 10, is viewed from the front. The front-rear direction corresponds to the front and back of the wearer wearing the glasses 10. The front side in the front-rear direction is the front side of the wearer, and the rear side in the front-rear direction is the rear side of the wearer. The front side of the wearer is the front side of the wearer, and the rear side of the wearer is the back side of the wearer. For example, the front side of the wearer is the side of the wearer's face, and the rear side of the wearer is the side of the back of the wearer's head. The up-down direction corresponds to the up-down direction of the wearer wearing the eyeglasses 10. The up-down direction is the up-down direction of the wearer, and the down-down direction is the down-down direction of the wearer.

[0012] The glasses 10 are of a flip-up type. Examples of flip-up glasses include single flip-up glasses and double flip-up glasses. In the embodiment, the single flip-up glasses 10 are taken as an example. In the single flip-up glasses 10, when the first lenses 11L, 11R are not flipped up (see the upper row of FIG. 1, the upper row of FIG. 2, FIG. 3, the upper row of FIG. 5, and the upper row of FIG. 6), the number of lenses provided corresponding to the left eye and the right eye of the wearer is one for each eye. In the embodiment, the state in which the first lenses 11L, 11R are not flipped up is referred to as a "non-flip-up state", and the state in which the first lenses 11L, 11R are flipped up is referred to as a "flip-up state".

[0013] The eyeglasses 10 include first lenses 11L, 11R, a holding frame 20, a front bar 30, nose pads 40L, 40R, hinges 50L, 50R, end pieces 60L, 60R, temples 61L, 61R, and hinges 63L, 63R (see Figs. 1 to 6). In the embodiment, when the first lenses 11L, 11R are not distinguished from each other or when they are collectively referred to, they are referred to as "first lenses 11". When the nose pads 40L, 40R are not distinguished from each other or when they are collectively referred to, they are referred to as "nose pads 40". When the hinges 50L, 50R are not distinguished from each other or when they are collectively referred to, they are referred to as "hinge 50". For the sake of convenience, the lens of the single flip-up eyeglasses 10 is called the "first lens" to distinguish it from the "second lens" of the compound flip-up eyeglasses described later.

[0014] The first lens 11L is a lens for the wearer's left eye, and the first lens 11R is a lens for the wearer's right eye (see the upper part of FIG. 1, the upper part of FIG. 2, FIG. 3, the upper part of FIG. 5, and the upper part of FIG. 6). The first lens 11 is similar to a lens provided in known flip-up type glasses. An example of known flip-up type glasses is the glasses disclosed in the above-mentioned Patent Document 1. Therefore, further explanation of the first lens 11 will be omitted.

[0015] The holding frame 20 holds the first lens 11 (see Fig. 1, the upper part of Fig. 2, and Figs. 4 to 6). In the embodiment, the holding frame 20 has a structure similar to that of a frame part that holds a lens in known half-rimmed glasses. The holding frame 20 includes holding parts 21L, 21R, a connecting part 23, and nylor 25L, 25R (see Figs. 1 to 6). The holding parts 21L, 21R correspond to the half-rims of known half-rimmed glasses. The holding parts 21L, 21R are connected by the connecting part 23. The holding frame 20 has a symmetrical shape. In the embodiment, when the holding parts 21L, 21R are not distinguished from each other or are collectively referred to, they are referred to as "holding part 21". When the nylor 25L, 25R are not distinguished from each other or are collectively referred to, they are referred to as "nylor 25".

[0016] Examples of materials forming the retaining portion 21 and the connecting portion 23 include metal and resin. In addition, one or both of the retaining portion 21 and the connecting portion 23 may be made of a composite material in the following manner. In this manner, a metal core is coated with a resin. Examples of metals include titanium and stainless steel. Examples of resins include polyetherimide, polyamide, nylon, celluloid, and acetate. However, the retaining portion 21 and the connecting portion 23 may be made of a material different from these. The material forming the retaining portion 21 and the connecting portion 23 is appropriately determined in consideration of various conditions.

[0017] The nylor 25 is attached to the holding portion 21 (see the lower part of FIG. 1 and FIGS. 5 and 6). That is, the nylor 25L is attached to the holding portion 21L, and the nylor 25R is attached to the holding portion 21R. In the holding frame 20, the first lens 11L is held by the holding portion 21L and the nylor 25L, and the first lens 11R is held by the holding portion 21R and the nylor 25R. The holding of the first lens 11 by the holding frame 20 is similar to that of the known half-rimmed eyeglasses described above. Therefore, further explanation regarding this is omitted.

[0018] The front bar 30 is disposed in front of the wearer's face, crossing the wearer's face from left to right (see the lower part of FIG. 1 and FIGS. 2 to 4). The front bar 30 is formed as an integral part. Examples of materials for forming the front bar 30 include metal and resin. In addition, the front bar 30 may be made of a composite material in the following manner. In this manner, a metal core is covered with resin. Examples of metals include titanium and stainless steel. Examples of resins include polyetherimide, polyamide, nylon, celluloid, and acetate. However, the front bar 30 may be made of a material different from these. The material for forming the front bar 30 is appropriately determined in consideration of various conditions.

[0019] The front bar 30 includes a central portion 31, end portions 33L, 33R, and connecting portions 35L, 35R (see the lower part of FIG. 1 and FIGS. 2 and 3). The front bar 30 has a bilaterally symmetrical shape. In the embodiment, when the end portions 33L, 33R are not distinguished from each other or are referred to collectively, they are referred to as "end portion 33." When the connecting portions 35L, 35R are not distinguished from each other or are referred to collectively, they are referred to as "connecting portion 35."

[0020] The central portion 31 includes the center of the width of the front bar 30 (see the lower part of FIG. 1 and FIGS. 2 and 3). The central portion 31 forms the central region A of the width of the front bar 30. The center line M coincides with the center of the width of the front bar 30. In the embodiment, the center line M is indicated by a dashed line in FIGS. 1 to 4. The center of the width of the front bar 30 can also be said to be the center of the width of the central portion 31. The nose pads 40 are provided in the central portion 31 (see FIGS. 2 to 4). Furthermore, the nose pads 40 are provided at symmetrical positions on either side of the center of the width of the front bar 30 in the central region B of the width of the central portion 31. The central region A of the width of the front bar 30 and the central region B of the width of the central portion 31 include the center of the width of the front bar 30 (see the upper part of FIG. 2 and the upper part of FIG. 3). The central region A of the width of the front bar 30 includes the central region B of the width of the central portion 31. A central region B of the central portion 31 in the width direction is aligned with the connecting portion 23 of the holding frame 20 in the front-rear direction.

[0021] The nose pad 40 contacts the wearer's nose. That is, the nose pad 40L contacts the left side of the wearer's nose when the eyeglasses 10 are worn by the wearer. The nose pad 40R contacts the right side of the wearer's nose when the eyeglasses 10 are worn by the wearer. The nose pads 40L and 40R contact predetermined positions on the wearer's nose regardless of whether the first lens 11 is flipped up. Accordingly, the nose pads 40L and 40R, together with the temples 61L and 61R, support the eyeglasses 10 on the wearer's head.

[0022] The end portion 33 is provided on the end side in the width direction from the central portion 31 (see the lower part of FIG. 1 and FIGS. 2 and 3). The end portion 33 forms the end region C in the width direction of the front bar 30 (see the upper part of FIG. 2 and the upper part of FIG. 3). The end region C in the width direction of the front bar 30 includes the end in the width direction of the front bar 30. The end portion 33 has a shape that is inclined from the center side in the width direction toward the end side toward the rear side in the front-rear direction (see FIGS. 3 and 4). That is, the end portion 33L is provided on the left side in the width direction from the central portion 31, and the end portion 33R is provided on the right side in the width direction from the central portion 31 (see the lower part of FIG. 1 and FIGS. 2 and 3). The end portion 33L forms the end region C on the left side in the width direction of the front bar 30, and the end portion 33R forms the end region C on the right side in the width direction of the front bar 30 (see the upper part of FIG. 2 and the upper part of FIG. 3). The end region C on the left side in the width direction of the front bar 30 includes the left end in the width direction of the front bar 30. The right end region C in the width direction of the front bar 30 includes the right end in the width direction of the front bar 30. The end portion 33L has a shape that is inclined from the center side in the width direction toward the left side toward the rear in the front-rear direction, and the end portion 33R has a shape that is inclined from the center side in the width direction toward the right side toward the rear in the front-rear direction (see Figures 3 and 4).

[0023] The connecting portion 35 connects the central portion 31 and the end portion 33 (see the lower part of FIG. 1 and FIGS. 2 and 3). That is, the connecting portion 35 is provided between the central portion 31 and the end portion 33, and connects the central portion 31 and the end portion 33 in the width direction. The connecting portion 35 has a shape that is inclined from the front to the rear in the front-rear direction (see FIG. 3). Furthermore, the connecting portion 35 has a shape in which the dimension in the front-rear direction gradually decreases from the center side to the end side in the width direction. That is, the connecting portion 35L connects the central portion 31 and the end portion 33L on the left side in the width direction of the central portion 31, and the connecting portion 35R connects the central portion 31 and the end portion 33R on the left side in the width direction of the central portion 31 (see the lower part of FIG. 1 and FIGS. 2 and 3). The connecting portion 35L has a shape that is inclined from the front to the rear in the front-rear direction, and the connecting portion 35R has a shape that is inclined from the front to the rear in the front-rear direction (see FIG. 3). Furthermore, the connecting portion 35L has a shape in which the dimension in the front-to-rear direction gradually decreases from the center side in the width direction toward the left side, and the connecting portion 35R has a shape in which the dimension in the front-to-rear direction gradually decreases from the center side in the width direction toward the right side.

[0024] The central portion 31 has a shape in which the dimension in the front-rear direction is larger than the dimension in the front-rear direction of the end portion 33 (see FIG. 3). When the eyeglasses 10 are in a non-flip-up state, the distance in the front-rear direction between the holding frame 20 and the front bar 30 is set as follows. That is, in the non-flip-up state, the distance in the front-rear direction between the holding frame 20 and the end portion 33 is wider than the distance in the front-rear direction between the holding frame 20 and the central portion 31. In other words, regarding the distance in the front-rear direction between the holding frame 20 and the front bar 30 in the non-flip-up state, the distance in the front-rear direction between the end region C in the width direction of the holding frame 20 and the front bar 30 is wider than the distance in the front-rear direction between the center region A in the width direction of the holding frame 20 and the front bar 30. In the non-flip-up state, the distance in the front-rear direction between the holding frame 20 and the connecting portion 35 gradually becomes wider toward the end side in the width direction.

[0025] The hinge 50 is fixed to the holding frame 20 and the front bar 30, respectively (see the lower part of FIG. 1 and FIG. 3). Furthermore, the hinge 50 is fixed to the holding frame 20 and the end part 33, respectively, in a state adjacent to the connecting part 35 in the width direction. That is, the hinge 50L is fixed to the holding part 21L and the end part 33L, respectively, in the following first state. In the first state, the hinge 50L is adjacent to the connecting part 35L in the width direction on the left side of the connecting part 35L in the width direction. The hinge 50R is fixed to the holding part 21R and the end part 33R, respectively, in the following second state. In the second state, the hinge 50R is adjacent to the connecting part 35R in the width direction on the right side of the connecting part 35R in the width direction. The hinge 50 supports the holding frame 20 rotatably with respect to the front bar 30 (see the lower part of FIG. 5 and the lower part of FIG. 6). That is, the hinges 50L, 50R rotatably support the holding frame 20 that holds the first lenses 11L, 11R with respect to the front bar 30. The hinges 50L, 50R have a symmetrical shape.

[0026] The hinge 50L includes a first link piece 51L and a second link piece 53L, and the hinge 50R includes a first link piece 51R and a second link piece 53R (see the lower part of FIG. 1, the lower part of FIG. 2, and FIG. 3). In the embodiment, when the first link pieces 51L and 51R are not distinguished from each other or are referred to collectively, they are referred to as the "first link piece 51." When the second link pieces 53L and 53R are not distinguished from each other or are referred to collectively, they are referred to as the "second link piece 53." In addition, the hinge 50 includes a shaft portion. An example of the shaft portion is a screw (male screw). In the embodiment, the shaft portion is not illustrated.

[0027] The first piece 51L is fixed to the front side of the end portion 33L in the front-rear direction, and the second piece 53L is fixed to the rear side of the holding portion 21L in the front-rear direction in the non-flip-up state (see the lower part of FIG. 1 and FIG. 3). The first piece 51L is fixed to a portion of the end portion 33L inclined to the rear side in the front-rear direction in the first state described above (see FIG. 3). The second piece 53L rotates around the shaft portion relative to the first piece 51L (see the lower part of FIG. 5). The first piece 51R is fixed to the front side of the end portion 33R in the front-rear direction, and the second piece 53R is fixed to the rear side of the holding portion 21R in the front-rear direction in the non-flip-up state (see the lower part of FIG. 1 and FIG. 3). The first piece 51R is fixed to a portion of the end portion 33R inclined to the rear side in the front-rear direction in the second state described above (see FIG. 3). The second piece 53R rotates around the shaft portion relative to the first piece 51R (see the lower part of FIG. 6).

[0028] Examples of the method of fixing the end portion 33 and the first piece 51 and the method of fixing the holding portion 21 and the second piece 53 include brazing and resin integral molding. Assume that the part of the end portion 33 to which the first piece 51 is fixed and the part of the holding portion 21 to which the second piece 53 is fixed are made of metal. In this case, brazing may be used as the above-mentioned fixing method. Assume that the part of the end portion 33 to which the first piece 51 is fixed and the part of the holding portion 21 to which the second piece 53 is fixed are made of resin. In this case, resin integral molding may be used as the above-mentioned fixing method. The fixing method of the end portion 33 and the first piece 51 and the fixing method of the holding portion 21 and the second piece 53 are appropriately determined in consideration of various conditions. For example, the fixing method of the end portion 33 and the first piece 51 is determined by taking into consideration the materials of the end portion 33 and the first piece 51, and the fixing method of the holding portion 21 and the second piece 53 is determined by taking into consideration the materials of the holding portion 21 and the second piece 53.

[0029] The eyeglasses 10 can achieve the following visual effect. In the non-flip-up state, this visual effect is that a part of the hinge 50, including the second link piece 53, can be hidden by the retaining frame 20 (see the upper part of FIG. 1). This makes it easier for a third party who sees a wearer wearing the eyeglasses 10 in the non-flip-up state from the front to get the impression that the eyeglasses 10 are normal eyeglasses that are not flip-up type. The hinge 50 may have the same structure as a hinge used in known flip-up type eyeglasses. Therefore, further explanation of the hinge 50 will be omitted.

[0030] The end piece 60L is provided contiguous to the left end of the front bar 30 (end portion 33L) in the width direction, and the end piece 60R is provided contiguous to the right end of the front bar 30 (end portion 33R) in the width direction (see the lower part of FIG. 1 and FIGS. 3-6). The temple 61L is connected to the end piece 60L via a hinge 63L, and the temple 61R is connected to the end piece 60R via a hinge 63R (see FIGS. 3 and 4). The temple 61L is rotatable within a predetermined range relative to the end piece 60L (front bar 30) by the hinge 63L, and the temple 61R is rotatable within a predetermined range relative to the end piece 60R (front bar 30) by the hinge 63R (see FIG. 3). When wearing the spectacles 10, the wearer can open the temples 61L and 61R (see FIGS. 1 and 2, the upper part of FIG. 3, and FIGS. 4-6). When the wearer is not wearing the eyeglasses 10, the temples 61L, 61R can be folded and closed (see the lower part of FIG. 3).

[0031] The end pieces 60L, 60R have a symmetrical shape. The temples 61L, 61R have a symmetrical shape. The hinges 63L, 63R have a symmetrical shape. The end pieces 60L, 60R are similar to end pieces provided in known flip-up type glasses. The temples 61L, 61R are similar to temples provided in known flip-up type glasses. Even in known flip-up type glasses, hinges are provided to allow the temples to rotate freely relative to the end pieces. That is, in the glasses 10, the end pieces 60L, 60R, the temples 61L, 61R, and the hinges 63L, 63R may have the same structure as the end pieces, temples, and hinges employed in known flip-up type glasses. Therefore, further explanations regarding the end pieces 60L, 60R, the temples 61L, 61R, and the hinges 63L, 63R will be omitted.

[0032] <Effects of the embodiment> According to the embodiment, the following effects can be obtained. That is, the eyeglasses 10 are of a flip-up type, and can be changed from a non-flip-up state to a flip-up state, and vice versa (see Figs. 1 to 6). The eyeglasses 10 include a holding frame 20, a front bar 30, nose pads 40, and a hinge 50. The holding frame 20 holds the first lens 11 (see Figs. 1, 2, and 4 to 6). The front bar 30 is disposed in front of the wearer's face so as to cross the wearer's face from side to side (see Fig. 1, 2, and 4 to 4). The nose pads 40 contact the wearer's nose. The hinge 50 is fixed to the holding frame 20 and the front bar 30, respectively (see Fig. 1, 3). The hinge 50 supports the holding frame 20 rotatably relative to the front bar 30 (see Fig. 5, 6). The front bar 30 includes a central portion 31, an end portion 33, and a connecting portion 35 (see the lower part of FIG. 1 and FIGS. 2 and 3). The central portion 31 includes the center of the width of the front bar 30, the end portion 33 is provided on the end side of the width direction from the central portion 31, and the connecting portion 35 connects the central portion 31 and the end portion 33 (see the lower part of FIG. 1 and FIGS. 2 and 3). The connecting portion 35 has a shape that is inclined forward in the front-rear direction to the rear side in the front-rear direction (see FIG. 3). The central portion 31 has a shape in which the dimension in the front-rear direction is larger than the dimension in the front-rear direction of the end portion 33 (see FIG. 3). The end portion 33 has a shape that is inclined backward in the front-rear direction from the center side in the width direction to the end side (see FIGS. 3 and 4). The connecting portion 35 has a shape in which the dimension in the front-rear direction gradually decreases from the center side to the end side in the width direction. The nose pad 40 is provided in the central portion 31 (see FIGS. 2 to 4). The hinge 50 is fixed to the holding frame 20 and the end portion 33, respectively, in a state adjacent to the connecting portion 35 in the width direction (see the lower part of FIG. 1 and FIG. 3).

[0033] According to the eyeglasses 10, by providing the nose pads 40 in the central portion 31 of the front bar 30, the distance between the first lens 11 and the wearer's eyes can be kept constant, and the nose pads 40 can be positioned on the rear side in the front-rear direction. The eyeglasses 10 can provide a comfortable fit to the wearer.

[0034] In the flip-up type eyeglasses 10, the widthwise spacing of the temples 61L, 61R may widen when the wearer puts on the eyeglasses 10. When the widthwise spacing of the temples 61L, 61R widens, a force acting on the temples 61L, 61R acts on the front bar 30. As a result, the front bar 30 may deform forward in the front-rear direction. In the front bar 30, the amount of deformation toward the front-rear direction increases toward the end side in the width direction. In the non-flip-up state, as the deformation amount of the front bar 30 increases, the distance between the holding frame 20 and the front bar 30 in the front-rear direction becomes narrower. According to the eyeglasses 10, the distance between the holding frame 20 and the front bar 30 in the front-rear direction can be widened at the end portion 33. The space in which the front bar 30 can move forward in the front-rear direction at the end side in the width direction becomes wider, and the amount of deformation of the end portion 33 of the front bar 30 can be increased. Contact with the holding frame 20 due to the deformation of the front bar 30 can be suppressed. The front-rear dimension of the front bar 30 can be gradually increased toward the center in the width direction at the connecting portion 35. Stress concentration at the connecting portion 35 can be alleviated. The durability of the front bar 30 can be improved. In the front bar 30, the rigidity of the center portion 31 is increased, and deformation of the center portion 31 in the front-rear direction can be suppressed.

[0035] <Modification> The embodiment can also be as follows. Some of the configurations of the modified examples shown below can be appropriately combined and adopted. Below, we will explain the points that are different from the above, and will appropriately omit explanations of similar points.

[0036] (1) A single flip-up type eyeglasses 10 is taken as an example (see Figs. 1-6). The following first, second, third, fourth and fifth structures of the front bar 30 (see the lower part of Fig. 1 and Figs. 2-4) can also be adopted for double flip-up type eyeglasses. In the first structure, the front bar 30 includes a central portion 31, an end portion 33 and a connecting portion 35. In the second structure, the connecting portion 35 has a shape that is inclined from the front side to the rear side in the front-rear direction, and connects the central portion 31 and the end portion 33. In the third structure, the central portion 31 has a shape in which the dimension in the front-rear direction is larger than the dimension in the front-rear direction of the end portion 33. In the fourth structure, the connecting portion 35 has a shape in which the dimension in the front-rear direction gradually decreases from the center side to the end side in the width direction. In the fifth structure, a nose pad 40 is provided in the central portion 31.

[0037] In the compound flip-up type glasses, the number of lenses provided corresponding to the left and right eyes of the wearer is two for each eye. The compound flip-up type glasses are provided with two first lenses corresponding to the first lenses 11L, 11R held in the holding frame 20, as well as second lenses for the left and right eyes. The second lenses are provided behind the first lenses in the front-rear direction in the non-flip-up state. In the compound flip-up type glasses, the front bar includes a central portion corresponding to the central portion 31, two end portions corresponding to the end portions 33L, 33R, and two connecting portions corresponding to the connecting portions 35L, 35R, similar to the front bar 30 of the above-mentioned single flip-up type glasses 10, and the nose pads are provided in the central portion of this front bar.

[0038] In the compound flip-up type glasses, the front bar holds the second lenses for the left and right eyes. For example, the front bar has a structure for holding the second lenses for the left and right eyes in the center part. The second lenses may be held by a structure including a nylor. In this case, the front bar may include the following first and second parts in the center part. The nylor that holds the second lens for the left eye is attached to the first part. The first part and the nylor hold the second lens for the left eye. The nylor that holds the second lens for the right eye is attached to the second part. The second part and the nylor hold the second lens for the right eye. The second lens may be held by the front bar by a structure similar to that of the first lens 11 held by the holding part 21. In addition, the second lens may be held by the front bar by a full-rim type structure including an annular holding part, as in known full-rim type glasses. In this case, the nylor is omitted. The holding part is sometimes called a rim. The structure for holding the second lens by the front bar is appropriately determined in consideration of various conditions. The second lens for the left eye is not flipped up and is disposed in front of the wearer's left eye. The second lens for the right eye is not flipped up and is disposed in front of the wearer's right eye. Even in the compound flip-up type glasses, by adopting the above-mentioned first structure, second structure, third structure, fourth structure, and fifth structure (see the lower part of FIG. 1 and FIGS. 2 to 4) in the front bar, it is possible to suppress contact between the second lens or the annular holding part (rim) that holds it and the wearer's face, and to provide the wearer with a comfortable fit, similar to the above-mentioned glasses 10. The compound flip-up type glasses are known flip-up type glasses, and further description thereof will be omitted.

[0039] (2) The end portion 33 has a shape that is inclined toward the rear in the front-to-rear direction from the center side in the width direction toward the end side (see Figs. 3 and 4). The end portion may have a shape that is curved toward the rear in the front-to-rear direction from the center side in the width direction toward the end side. In this case, the left end portion in the width direction has a shape that is curved toward the rear in the front-to-rear direction from the center side in the width direction toward the left side, and the right end portion in the width direction has a shape that is curved toward the rear in the front-to-rear direction from the center side in the width direction toward the right side.

[0040] (3) The retaining frame 20 adopts a configuration corresponding to the half-rim of known half-rimmed eyeglasses, and includes a nylor 25 (see Figs. 1, 2, 4-6). The retaining frame may be configured similarly to the rim of known full-rimmed eyeglasses. In a full-rimmed retaining frame, the retaining portions on the left and right sides in the width direction have an annular shape, and the two retaining portions on the left and right sides are connected by a connecting portion. The first lens is held by the full-rimmed retaining frame in the same manner as known full-rimmed eyeglasses. The nylor 25L, 25R are omitted.

[0041] In a full-rim type holding frame, the holding portion has an annular shape. In the annular holding portion, a part of the holding portion is also provided on the lower side of the first lens in the vertical direction. In this case, the vertical dimension of the holding portion may be large. For example, if the holding portion is made of resin or composite material, the vertical dimension of the holding portion is likely to be large. If the wearer has one or both of the characteristics of a low nose and high cheeks, it is assumed that the holding portion is likely to come into contact with the wearer's face at the lower side in the vertical direction. In addition, if the first lens has a shape with a large vertical dimension, it is assumed that a part of the glasses is likely to come into contact with the wearer's face whether the holding frame is a half-rim type or a full-rim type. However, by adopting the above-mentioned first structure, second structure, third structure, fourth structure, and fifth structure (see the lower part of FIG. 1 and FIGS. 2 to 4) to the front bar, the wearer can be given a comfortable wearing feeling similar to that of the above-mentioned glasses 10 regardless of the type of glasses. [Explanation of symbols]

[0042] 10 glasses, 11, 11L, 11R first lens, 20 holding frame 21,21L,21R Holding part, 23 Connecting part 25,25L,25R Nylor, 30 Front bar, 31 Center section 33,33L,33R end part, 35,35L,35R connecting part 40,40L,40R Nose pads, 50,50L,50R Hinge 51,51L,51R first piece, 53,53L,53R second piece 60L,60R End piece, 61L,61R Temple, 63L,63R Hinge A central region (front bar 30), B central region (central portion 31) C End area (front bar 30), M Centerline

Claims

[Claim 1] Flip-up eyeglasses in which the first lens is flipped up, A holding frame that holds the first lens; A front bar is disposed in front of the face of the wearer wearing the eyeglasses in a state of crossing the face of the wearer from left to right; A nose pad that contacts the wearer's nose; a hinge fixed to the holding frame and the front bar, respectively, and supporting the holding frame rotatably relative to the front bar; The front bar is A central portion including a center in a width direction of the front bar corresponding to a width of the wearer's face; an end portion provided on an end side in the width direction from the central portion; a connecting portion having a shape inclined toward the rear side in the front-to-rear direction, the connecting portion connecting the central portion and the end portion, the connecting portion being inclined toward the rear side in the front-to-rear direction, the connecting portion being inclined toward the front-to-rear direction, the connecting portion connecting the central portion and the end portion, the central portion has a shape in which the dimension in the front-to-rear direction is greater than the dimension in the front-to-rear direction of the end portions, The end portion has a shape that is inclined or curved toward the rear in the front-rear direction from the center side to the end side in the width direction, The connecting portion has a shape in which the dimension in the front-rear direction gradually decreases from the center side toward the end side in the width direction, The nose pad is provided in the central portion, The hinge is fixed to the holding frame and the end portion respectively while being adjacent to the connecting portion in the width direction.

Images