Eyeglass frame

Abstract

To increase the safety of a wearer and the performance of preventing breakage of an eyeglass frame.SOLUTION: In an eyeglass frame including: a pair of rims 11R and 11L that respectively fix lenses LR and LL; a bridge 12 that connects the pair of rims; and temples 14R and 14L that are respectively connected to the rims 11R and 11L via respective end pieces 13R and 13L, the eyeglass frame 1 is configured to include an outer frame part and an inner frame part, the inner frame part being softer in hardness than the outer frame part and provided in at least a part of the inner side of the outer frame part, and the inner frame part includes temple inner frame parts 14RI and 14LI provided on the inner side of the temples of the outer frame part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an eyeglass frame. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there have been techniques aimed at improving the safety of a wearer and preventing damage to an eyeglass frame when an external force such as an impact acts on the eyeglass frame due to exercise or the like (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-157908 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, there has been a demand for further improvements in terms of safety for the wearer and prevention of damage to the eyeglass frames.

[0005] The present invention has been made in consideration of the above circumstances, and aims to improve the safety of the wearer and the ability to prevent damage to the eyeglass frame. [Means for solving the problem]

[0006] In order to achieve the above object, an eyeglass frame according to one aspect of the present invention comprises: A pair of rims for fixing lenses, a bridge connecting the pair of rims, and temples connected to the rims via end pieces, The eyeglass frame is composed of an outer shell portion and an inner shell portion that is softer than the outer shell portion and is provided at least partially inside the outer shell portion, The inner portion includes a temple inner portion provided inside the temple of the outer portion. Effect of the Invention

[0007] According to the present invention, it is possible to improve the safety of the wearer and the performance of preventing damage to the eyeglass frame. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an overall view of glasses to which an embodiment of a glasses frame according to the present invention is applied. [Diagram 2] 2 is a perspective view showing an overall image of glasses to which an eyeglass frame according to an embodiment of the present invention is applied, shown from a different direction than that of FIG. 1. [Diagram 3] FIG. 3 is a front view of the glasses shown in FIGS. [Figure 4] FIG. 3 is a plan view of the glasses shown in FIGS. [Diagram 5] 5 is a reference diagram showing further cut surfaces and symbols in the plan view of the glasses shown in FIG. 4. FIG. [Figure 6] FIG. 3 is a bottom view of the glasses shown in FIGS. [Figure 7] FIG. 3 is a left side view of the glasses shown in FIGS. 1 and 2. [Figure 8] FIG. 3 is a back view of the glasses shown in FIG. 1 and FIG. 2. [Figure 9] 5 is a cross-sectional view of the eyeglasses shown in FIG. 4 taken along line ABCD. [Figure 10] 6 is a cross-sectional view taken along line EE of the eyeglasses shown in FIG. 5. [Figure 11] 6 is a cross-sectional view of the eyeglasses shown in FIG. 5 taken along line FF. [Figure 12] 8 is a cross-sectional view of the eyeglasses shown in FIG. 7 taken along line GG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, an overall view of glasses to which an eyeglass frame according to an embodiment of the present invention is applied will be described with reference to Figs. 1 and 2. Figs.

[0010] In the description of the eyeglass frames according to the embodiments of the present invention, unless otherwise specified, the following directions are used: That is, a three-dimensional Cartesian coordinate system consisting of the following axes X, Y, and Z is used.

[0011] When the eyeglass frames are worn by a wearer facing directly, the axis X is taken as the left-right direction for the wearer. The direction to the left for the wearer is called the "positive direction of the X axis," and the opposite direction is called the "negative direction of the X axis." The axis Y is taken as the front-to-back direction relative to the wearer. The direction that is forward relative to the wearer is called the "negative direction of the axis Y," and the opposite direction is called the "positive direction of the axis Y." The vertical direction for the wearer, that is, the direction in which gravity acts, is taken as axis Z. The direction opposite to the direction in which gravity acts (upward) is called the "positive direction of axis Z," and the opposite direction (downward) is called the "negative direction of axis Z."

[0012] Additionally, the negative direction of the axis Y will be referred to as the "front side", the positive direction of the axis Y as the "rear side", the positive direction of the axis Z as the "upper side", and the negative direction of the axis Z as the "lower side". Additionally, in the XY plane, the direction away from the wearer's head will be referred to as the "outer side", and the opposite direction will be referred to as the "inner side".

[0013] The eyeglass frame of this embodiment has a shape symmetrical in the X-axis direction with respect to the YZ plane. Therefore, in the following description, the parts constituting the eyeglasses and provided on the left and right sides of the wearer are designated with the symbol L for the part on the left side of the wearer and the symbol R for the part on the right side of the wearer.

[0014] <Overall picture> FIG. 1 is a perspective view showing an overall image of eyeglasses to which an eyeglass frame according to an embodiment of the present invention is applied. FIG. 2 is a perspective view showing an overall image of eyeglasses to which an eyeglass frame according to an embodiment of the present invention is applied, and is shown from a different direction than FIG.

[0015] The eyeglass frame 1 has rims 11R and 11L, a bridge 12, end pieces 13R and 13L, and temples 14R and 14L.

[0016] Here, the eyeglass frame 1 of this embodiment is integrally molded using a thermoplastic resin rubber elastic body (TPE: Thermoplastic elastomer). That is, the rims 11R and 11L, the bridge 12, the end pieces 13R and 13L, and the temples 14R and 14L are integral and inseparable. For ease of explanation, the eyeglass frame, which is integral and inseparable, will be described below by dividing it into the individual parts of the rims 11R and 11L, the bridge 12, the end pieces 13R and 13L, and the temples 14R and 14L. In addition, in each drawing, auxiliary lines dividing each part are indicated by symbols beginning with S.

[0017] The eyeglass frame 1 of this embodiment is molded simultaneously and integrally by double injection molding using two thermoplastic resin rubber elastic bodies with different hardnesses. As will be described in detail later, the outer shell of the eyeglass frame 1 is molded from a hard thermoplastic resin rubber elastic body. Furthermore, the inner shell of the eyeglass frame 1 is molded from a softer thermoplastic resin rubber elastic body than the outer shell. In other words, the outer shell and the inner shell are molded integrally and inseparably using two thermoplastic resin rubber elastic bodies with different hardnesses. As described above, no metal is used as a material for the eyeglass frame 1. This improves the safety of the wearer. In this embodiment, the outer portion of the eyeglass frame 1 includes rim outer portions 11RO, 11LO, bridge outer portion 12O, end pieces 13R, 13L, and temple outer portions 14RO, 14LO. The inner portion of the eyeglass frame 1 includes rim inner portions 11RI, 11LI, bridge inner portion 12I, and temple inner portions 14RI, 14LI.

[0018] In the following, the outer shell portion which is molded from a hard thermoplastic resin rubber elastomer will be described by adding the letter O to the reference numerals of each part, and the inner shell portion which is molded from a softer thermoplastic resin rubber elastomer compared to the outer corners will be described by adding the letter I to the reference numerals of each part.

[0019] The rims 11R and 11L are parts of the eyeglass frame 1 that surround and fix the lenses LR and LL, respectively.

[0020] The rim 11R is made up of a rim inner portion 11RI and a rim outer portion 11RO. The rim 11L is made up of a rim inner portion 11LI and a rim outer portion 11LO. As shown in Figure 1, the rim inner portions 11RI and 11LI have multiple bottomed holes. The specific structures of the rim inner portions 11RI and 11LI and the rim outer portions 11RO and 11LO of the rims 11R and 11L, and the benefits of having these structures will be described later. In the following description, when there is no need to distinguish between the rims 11R and 11L, they will be collectively referred to as "rim 11."

[0021] The bridge 12 connects the pair of limbs 11R and 11L. The bridge 12 is connected to the rim 11R via a location indicated by an auxiliary line S1, and is connected to the rim 11L via a location indicated by an auxiliary line S4, thereby connecting the pair of rims 11R and 11L.

[0022] The bridge 12 is composed of a bridge inner portion 12I and a bridge outer portion 12O. As shown in Fig. 1, the bridge inner portion 12I has a plurality of holes or a plurality of bottomed holes penetrating in the vertical direction. The specific structures of the bridge inner portion 12I and the bridge outer portion 12O of the bridge 12 and the advantages of having such structures will be described later.

[0023] The end pieces 13R and 13L connect the rims 11R and 11L to the temples 14R and 14L, respectively, which will be described later. The end piece 13R is connected to the rim 11R at a location indicated by an auxiliary line S2, and to the temple 14R at a location indicated by an auxiliary line S3, thereby connecting the rim 11R and the temple 14R. The end piece 13L is connected to the rim 11L at a location indicated by an auxiliary line S5, and to the temple 14L at a location indicated by an auxiliary line S6, thereby connecting the rim 11L and the temple 14L.

[0024] In addition, the end pieces 13R and 13L each have a recess 13R-C or 13L-C recessed from the outside to the inside of the eyeglass frame. By having the recess 13R-C or 13L-C, the end pieces 13R and 13L each deform flexibly and do not crack, regardless of whether the temple 14 is deformed in the direction to close (the ends in the positive direction of the axis Y come into contact with each other) or in the direction to open (the ends in the positive direction of the axis Y move away from each other). In the following, when there is no need to distinguish between the armor 13R and 13L, they will be collectively referred to as "Armor 13."

[0025] The temples 14R and 14L are connected to the rims 11R and 11L via the end pieces 13R and 13L, respectively. The temple 14R is connected to the end piece 13R at a location indicated by an auxiliary line S3, and the end piece 13R is connected to the rim 11R at a location indicated by an auxiliary line S2. The temple 14L is connected to the end piece 13L at a location indicated by an auxiliary line S6, and the end piece 13L is connected to the rim 11L at a location indicated by an auxiliary line S5.

[0026] The temple 14R is composed of a temple inner portion 14RI and a temple outer portion 14RO. The temple 14L is composed of a temple inner portion 14LI and a temple outer portion 14LO. As shown in Fig. 1, the temple inner portions 14RI and 14LI have a plurality of holes or a plurality of bottomed holes penetrating in the vertical direction. The specific structures of the temple inner portions 14RI and 14LI and the temple outer portions 14RO and 14LO of the temples 14R and 14L and the advantages of having such structures will be described later. In the following description, when there is no need to distinguish between the temples 14R and 14L, they will be collectively referred to as "temple 14."

[0027] The overall picture of the eyeglasses to which the eyeglass frame 1 according to the embodiment of the present invention is applied has been described above with reference to Figs.

[0028] <Detailed structure> Hereinafter, a detailed structure of glasses to which an eyeglass frame 1 according to an embodiment of the present invention is applied will be described with reference to Figs. 3 to 7 in addition to Figs.

[0029] FIG. 3 is a front view of the glasses shown in FIGS. FIG. 4 is a plan view of the glasses shown in FIGS. FIG. 5 is a reference diagram showing further cut surfaces and symbols in the plan view of the glasses shown in FIG. FIG. 6 is a bottom view of the glasses shown in FIGS. FIG. 7 is a left side view of the glasses shown in FIGS. FIG. 8 is a back view of the glasses shown in FIGS. The right side view is omitted since it is symmetrical with the left side view.

[0030] As shown in Figs. 1 and 2 etc., rim inner portions 11RI, 11LI of the rim 11 have holes with bottoms that are recessed upward or downward (hereinafter referred to as bottomed holes).

[0031] Specifically, for example, a plurality of bottomed holes recessed from the top to the bottom are formed along the left-right direction (X direction) on the upper edge side 11RI-ST of the rim inner portion 11RI of the rim 11R. Similarly, a plurality of bottomed holes recessed from the top to the bottom are formed along the left-right direction on the upper edge side 11LI-ST of the rim inner portion 11LI of the rim 11L. Here, the upper edge sides 11RI-ST and 11LI-ST of the rim inner portions 11RI and 11LI refer to the edge portions on the positive side of the axis Z of the rims 11R and 11L, respectively.

[0032] Additionally, a plurality of bottomed holes recessed from the bottom to the top are formed along the left-right direction (axis X direction) on the lower edge side 11RI-SB of the rim inner portion 11RI of the rim 11R. Similarly, a plurality of bottomed holes recessed from the bottom to the top are formed along the left-right direction on the lower edge side 11LI-SB of the rim inner portion 11LI of the rim 11L. Here, the lower edge sides 11RI-SB and 11LI-SB of the rim inner portions 11RI and 11LI refer to the edge portions on the negative side of the axis Z of the rims 11R and 11L, respectively.

[0033] Further, a top surface 12I-ST of the bridge inner portion 12I of the bridge 12 is formed with a plurality of holes penetrating in the up-down direction.

[0034] In addition, a plurality of holes penetrating in the vertical direction are formed in the temple inner portion 14RI of the temple 14R along the longitudinal direction of the temple 14R. Similarly, a plurality of holes penetrating in the vertical direction are formed in the temple inner portion 14LI of the temple 14L along the longitudinal direction of the temple 14L. Here, the longitudinal direction of the temple inner portions 14RI and 14LI refers to the direction of the approximate axis Y of the temples 14R and 14L, respectively.

[0035] Here, the structure of the multiple holes that penetrate the temple 14 in the vertical direction and the advantages of having this structure will be described.

[0036] 1 to 4, the temple inner portion 14RI of the temple 14R has an upper surface 14RI-ST, an inner surface 14RI-SI, and a lower surface 14RI-SB. The upper surface 14RI-ST and the lower surface 14RI-SB are smoothly connected as one surface at the end of the temple 14R in the positive direction of the axis Y (the end on the +Y side). Similarly, the temple inner portion 14LI of the temple 14L has an upper surface 14LI-ST, an inner surface 14LI-SI, and a lower surface 14LI-SB. The upper surface 14LI-ST and the lower surface 14LI-SB are smoothly connected as a single surface at the end of the temple 14L in the positive direction of the axis Y (the +Y side end).

[0037] As shown in Figures 1 and 2, the temple inner portion 14RI has a plurality of holes formed along the longitudinal direction of the temple 14R, penetrating from the upper surface 14RI-ST of the temple inner portion 14RI to the lower surface 14RI-SB. Similarly, a plurality of holes are formed in the temple inner portion 14LI along the longitudinal direction of the temple 14R so as to penetrate from an upper surface 14RI-ST of the temple inner portion 14RI to a lower surface 14RI-SB.

[0038] 5, adjacent holes in the temple inner portion 14RI are partitioned by walls 14RI-W1 to 14RI-W6. Each of the walls 14RI-W1 to 14RI-W6 is inclined from the front side (-Y side) to the rear side (+Y side) as it moves from the outside to the inside of the eyeglass frame 1. In the following, when it is not necessary to distinguish between the walls 14RI-W1 to 14RI-W6, they are collectively referred to as "walls 14RI-W." Similarly, each of the adjacent holes in the temple inner portion 14LI is formed by being partitioned by each of the walls 14LI-W1 to 14LI-W6. Each of the walls 14LI-W1 to 14LI-W6 is inclined from the front side (-Y side) to the rear side (+Y side) as it goes from the outside to the inside of the eyeglass frame 1. In the following, when it is not necessary to distinguish between the walls 14LI-W1 to 14LI-W6 individually, they are collectively referred to as "walls 14LI-W."

[0039] Here, for example, suppose that an impact is applied to the temple 14R by a collision of a predetermined object from the negative direction of the axis X toward the positive direction of the axis X. In this case, the temple 14R of the eyeglass frame 1 and the like are deformed. Specifically, for example, the inner surface 14RI-SI of the temple inner portion 14RI first comes into contact with the wearer. As described above, the temple inner portion 14R is formed of a thermoplastic resin rubber elastic body that is softer than the outer portion. Therefore, after coming into contact with the wearer, the temple inner portion 14RI deforms first compared to the temple outer portion 14RO. In addition, since the temple inner portion 14RI has a plurality of holes formed therein as described above, the plurality of holes deform (crush) and thus the temple inner portion 14RI is more easily deformed. As a result, the temple inner portion 14RI reduces the impact, improving the safety of the wearer.

[0040] In addition, the inner surface 14RI-SI of the temple inner portion 14RI generates a frictional force against the wearer after coming into contact with the wearer. Then, the wall portion 14RI-W, which is inclined from the front to the rear as it goes from the outside to the inside of the eyeglass frame 1, deforms so that the temple 14R moves in the negative direction of the axis Y relative to the inner surface 14RI-SI of the temple inner portion 14RI. This prevents the rim 11R or the lens LR from touching the wearer, and if they do come into contact, the force with which they are pressed against the wearer is reduced, thereby improving the safety of the wearer.

[0041] In addition, when the wall portion 14RI-W inclined from the front side to the rear side is deformed, two or more wall portions 14RI-W overlap each other in the axial direction X. As a result, the thickness of the wall portion 14RI-W in the axial direction X becomes the sum of the thicknesses of the overlapping wall portions 14R. In other words, the temple inner portion 14RI, which is a thermoplastic resin rubber elastic body that is softer than the outer portion, has room to deform by the sum of the thicknesses of the overlapping wall portions 14RI-W. In the entire range having a plurality of holes penetrating in the vertical direction, the wall portion 14RI-W can have a region where the wall portion 14RI-W overlaps substantially uniformly when deformed, thereby improving the safety of the wearer.

[0042] Furthermore, when the temples 14 are deformed in the direction of opening (the direction of moving the ends in the positive direction of the axis Y away from each other), a restoring force acts in the long side direction of the wall portion 14RI-W in the XY plane. This makes it easier for the eyeglass frame 1 to return to its normal shape. In other words, the eyeglass frame 1 is more likely to return to its normal shape, improving the fit, and the eyeglass frame 1 is more likely to return to its normal shape even after repeated deformation, improving its lifespan. The same applies to the case where an impact is applied to the temple 14L.

[0043] Furthermore, the multiple holes penetrating in the vertical direction are provided in non-contact areas of the temple inner portions 14RI, 14LI that do not come into contact with the head of a wearer wearing the eyeglass frames. The non-contact area refers to the area that does not come into contact with the wearer under normal circumstances, and more specifically, refers to the area excluding the part of the rear end (+Y side end) of the temple that comes into contact with the wearer's head or ears when the wearer wears the eyeglass frames. As described above, the multiple holes that penetrate in the vertical direction are present so as to pass through the upper surface 14RI-ST and the lower surface 14RI-SB of the temple inner portion 14RI. Specifically, for example, the multiple holes that penetrate in the vertical direction do not have a structure on the inner surface 14RI-SI of the temple inner portion 14RI that comes into contact with the wearer's head. As a result, the wearer does not come into contact with unevenness or the like caused by a plurality of holes or the like penetrating in the vertical direction, and therefore does not feel uncomfortable when wearing the mask, which has the effect of improving the wearing comfort.

[0044] In addition, in the vicinity of the multiple holes of the temple inner portion 14RI of the temple 14R, the length of the inner surface 14RI-SI is longer in the approximate direction of axis Y than the length of the surface in contact with the temple outer portion 14RO in the approximate direction of axis Y. This allows the temple 14 to flexibly deform even when it is deformed in the direction of opening (direction in which the ends in the positive direction of axis Y are separated from each other), reducing the risk of cracking or the like.

[0045] The specific structure of the multiple holes that penetrate the temple 14 in the up-down direction and the advantages of having this structure have been described above mainly using the temple 14R. As shown in FIG. 5 and other figures, the temple 14L has a structure basically similar to that of the temple 14R, and there are advantages to having this structure.

[0046] Next, the structure of the multiple bottomed holes of the rim 11R and the advantages of having this structure will be described.

[0047] Similarly to the temple inner portion 14RI, each of the adjacent bottomed holes of the rim inner portion 11RI is separated by a wall portion 11RI-W. Each of the walls 11RI-W of the rim inner portion 11RI is inclined from the bridge 12 side to the end piece 13R side as it goes from the outside to the inside of the eyeglass frame 1.

[0048] Here, for example, suppose that a certain object collides with the rim inner portion 11RI from the negative direction of the axis Y toward the positive direction of the axis Y, and an impact is applied to it. In this case, the rim 11R etc. of the eyeglass frame 1 are deformed. Specifically, for example, the inner surface of the rim inner portion 11RI comes into contact with the wearer. As described above, the rim inner portion 11RI is formed of a thermoplastic resin rubber elastic body that is softer than the rim outer portion 11RO. Therefore, the rim inner portion 11RI deforms first compared to the rim outer portion 11RO. Also, since the rim inner portion 11RI has multiple bottomed holes formed therein as described above, it is more easily deformed as the multiple bottomed holes deform (crush). As a result, the rim inner portion 11RI reduces the impact, improving the safety of the wearer.

[0049] In addition, the inner surface of the rim inner portion 11RI generates a frictional force against the wearer after coming into contact with the wearer. In addition, the wall portion 12O-W, which is inclined from the bridge 12 side to the end piece 13R side as it moves from the outside to the inside of the eyeglass frame 1, deforms relative to the inner surface of the rim inner portion 11RI so that the rim 11R moves in the positive direction of the axis X. The positive direction of the axis X is the direction away from the wearer's right eye in the nose pad portion of the rim 11R. This prevents the nose pad portion of the rim 11R from touching the wearer (especially the right eyeball), and if it does come into contact, the force with which it is pressed against the wearer is reduced, improving the safety of the wearer.

[0050] Furthermore, when the walls 11RI-W of the rim inner shell 11RI are deformed, two or more walls 11RI-W overlap each other in the axial Y direction. As a result, the thickness of the walls in the axial Y direction is the sum of the thicknesses of the overlapping walls 11RI-W. In other words, the rim inner shell 11RI, which is a thermoplastic resin rubber elastic body that is softer than the outer shell, has room to deform by the sum of the thicknesses of the overlapping walls 11RI-W. In the entire area having the multiple bottomed holes, the wall portion 11RI-W can have a region where the wall portion overlaps substantially uniformly when deformed, thereby improving the safety of the wearer.

[0051] As described above, when the temples 14 are deformed in the direction of closing (the ends in the positive direction of the axis Y come into contact with each other) or in the direction of opening (the ends in the positive direction of the axis Y move away from each other), the respective recesses 13R-C and 13L-C of the end pieces 13R and 13L allow the temples 14 to deform flexibly and do not crack. However, when the rim 11 is also deformed, a restoring force acts in the long side direction of the wall portion 11RI-W. This makes the eyeglass frame 1 more likely to return to its normal shape. In other words, the eyeglass frame 1 is more likely to return to its normal shape, improving the wearing comfort, and is more likely to return to its normal shape even after repeated deformation, improving the life of the eyeglass frame 1.

[0052] The specific structure of the multiple bottomed holes of the rim 11R and the advantages of having the structure have been described above. As shown in FIG. 5 etc., the rim 11L has a structure basically similar to that of the rim 11R, and there are advantages to having this structure.

[0053] Next, the structure of the holes that penetrate the bridge 12 in the vertical direction and the advantages of having this structure will be described.

[0054] The hole penetrating the bridge inner portion 12I in the vertical direction is formed next to the bottomed hole provided in the rim inner portions 11RI, 11LI adjacent to the bridge inner portion 12I, and is partitioned by a wall portion 120-W. The wall portion 120-W forming the hole in the bridge inner portion 12I is inclined from the center of the bridge 12 toward the end piece 13 as it goes from the outside to the inside of the eyeglass frame 1.

[0055] Here, for example, suppose that a predetermined object collides against the bridge inner portion 12I from the negative direction of the axis Y toward the positive direction of the axis Y. In this case, the bridge 12 of the eyeglass frame 1 is deformed together with the rims 11R, 11L, etc. Specifically, for example, the inner surface of the bridge inner portion 12I contacts the wearer. As described above, the bridge inner portion 12I is formed of a thermoplastic resin rubber elastic body that is softer than the outer portion. Therefore, the bridge inner portion 12I deforms earlier than the bridge outer portion 12O. In addition, since the bridge inner portion 12I has a hole penetrating in the vertical direction as described above, the through hole is deformed (crushed) and is therefore more easily deformed. As a result, the bridge inner portion 12I reduces impacts (particularly impacts from the front direction of the wearer), improving the safety of the wearer.

[0056] Furthermore, when the wall 120-W of the bridge inner portion 12I is deformed, it overlaps with the wall 11RI-W of the multiple bottomed holes of the adjacent rim inner portions 11RI, 11RI in the axial Y direction. As a result, the thickness of the wall in the axial Y direction is the sum of the thicknesses of the overlapping wall portions 11RI-W and 120-W. In other words, the bridge inner portion 12I, which is a thermoplastic resin rubber elastic body that is softer than the outer portion, has room to deform by the sum of the thicknesses of the overlapping wall portions. In the entire area having the hole penetrating in the vertical direction, the wall portion can have a region where it overlaps substantially uniformly when deformed, thereby improving the safety of the wearer.

[0057] The specific structure of the holes that penetrate the bridge 12 in the vertical direction and the advantages of having such a structure have been described above.

[0058] <Shapes of holes that penetrate vertically and holes with bottoms> Hereinafter, the shape of the above-mentioned hole penetrating in the vertical direction or the bottomed hole will be described with reference to Figs.

[0059] FIG. 9 is a cross-sectional view of the eyeglasses shown in FIG. 4 taken along line ABCD. As shown in Figure 9, the hole provided on the upper edge side 11RI-ST of the rim inner part 11RI of the rim 11R has a bottom 11RI-B. This prevents deformation of not only the wall part 11RI-W of the upper edge side 11RI-ST of the rim inner part 11RI of the rim 11R, but also the bottom 11RI-B, in response to forces in the XY plane. As a result, deformation of the rim inner part 11RI, and therefore of the rim 11R, in response to minor forces (for example, inertial forces associated with the wearer's movement) is minor, improving the fit. Additionally, the hole on the upper edge side 11RI-ST (axis Z positive side) of the rim inner portion 11RI of the rim 11R is a bottomed hole recessed from the upper side of the upper edge side 11RI-ST downward, with a bottom (bottom 11RI-B) formed on the lower side (axis Z negative side). This makes it possible to view the multiple bottomed holes from the axis Z positive direction when the glasses are worn. This improves the design of the eyeglass frame 1 while providing the benefit of improved wearing comfort described above. In addition, by making the hole on the upper edge side 11RI-ST (positive side of axis Z) recessed from the top to the bottom of the upper edge side 11RI-ST, it is possible to make it easier to demold the eyeglass frame 1 when producing it using upper and lower molds, making it easier to manufacture the eyeglass frames. Furthermore, the weight of the inner rim portion can be reduced, and the material used for the inner rim portion can be reduced, contributing to cost reduction. As shown in FIG. 9 and other figures, the rim 11L has a structure basically similar to that of the rim 11R, and has some advantages due to having this structure.

[0060] FIG. 10 is a cross-sectional view of the eyeglasses shown in FIG. 5 taken along line EE. As shown in Figure 10, the hole provided on the lower edge side 11RI-SB of the rim inner part 11RI of the rim 11R has a bottom part 11RI-B. This prevents deformation of not only the wall part 11RI-W of the lower edge side 11RI-SB of the rim inner part 11RI of the rim 11R but also the bottom part 11RI-B in response to forces in the XY plane. As a result, deformation of the rim inner part 11RI and therefore the rim 11R in response to minor forces (for example, inertial forces associated with the wearer's movement) is minor, improving the fit. In addition, the hole on the lower edge side 11RI-SB (negative side of axis Z) of the rim inner portion 11RI of the rim 11R is a bottomed hole recessed from the lower side of the lower edge side 11RI-SB toward the upper side, and a bottom (bottom 11RI-B) is formed on the upper side (positive side of axis Z). This makes it possible to view the multiple bottomed holes from the negative direction of axis Z when the glasses are worn. This improves the design of the eyeglass frame 1 while providing the benefit of improved wearing comfort described above. In addition, by making the hole on the lower edge side 11RI-SB (negative side of axis Z) recessed from the bottom side of the lower edge side 11RI-SB toward the top side, it becomes easier to demold the eyeglass frame 1 when it is produced using upper and lower molds, which also has the effect of making it easier to manufacture the eyeglass frames. Furthermore, the weight of the inner rim portion can be reduced, and the material used for the inner rim portion can be reduced, contributing to cost reduction. As shown in FIG. 10 and other figures, the rim 11L has a structure basically similar to that of the rim 11R, and there are advantages to having this structure.

[0061] FIG. 11 is a cross-sectional view of the eyeglasses shown in FIG. 5 taken along line FF. FIG. 12 is a cross-sectional view of the eyeglasses shown in FIG. 7 taken along line GG. As shown in Fig. 11 and Fig. 12, the hole provided in the temple inner part 14RI of the temple 14R is a hole penetrating in the vertical direction. This makes it possible to reduce the weight of the temple inner part and to reduce the material used for the temple inner part, thereby contributing to cost reduction. In addition, in the temple 14R that comes into contact with the side of the wearer's head, sebum dirt and the like are likely to accumulate in the hole. Therefore, in the temple 14R, the hole penetrating in the vertical direction is easier to clean than a hole with a bottom.

[0062] 9, the holes provided in the bridge inner portion 12I of the bridge 12 are holes that penetrate in the vertical direction. This makes it possible to reduce the weight of the bridge inner portion 12I and also to reduce the amount of material used for the bridge inner portion 12I, thereby contributing to cost reduction.

[0063] <Hardness of outer and inner shell>

[0064] The Shore hardness (A) of the outer portion (for example, the outer portions of the rim 11, bridge 12, end piece 13, and temples 14) is preferably 100 degrees or more and 150 degrees or less. In particular, it is more preferable that the Shore hardness (A) of the outer portion is 120. Here, if the Shore hardness of the outer shell is less than 100 degrees, it is difficult to maintain the shape of the eyeglass frame, which is undesirable. If the Shore hardness of the outer shell is more than 150 degrees, the eyeglass frame becomes less deformable, that is, the eyeglass frame itself becomes less deformable, and it becomes unable to absorb impacts sufficiently or the eyeglass frame itself may be damaged, which is undesirable. If the Shore hardness of the outer shell is more than 150 degrees, it is difficult to remove the molded eyeglass frame 1 from the mold when molded by injection molding, which is undesirable.

[0065] Specifically, for example, the thermoplastic resin rubber elastomer of the outer shell can be one that meets the TED-602 standard (a product of Dongguan Changsheng New Material Co., Ltd.). The thermoplastic resin rubber elastomer of the TED-602 standard contains styrene ethylene butylene styrene, naphthenic oil, polypropylene, calcium carbonate, and an antioxidant as ingredients.

[0066] The Shore hardness (A) of the inner portion (for example, the inner portions of the rim 11, bridge 12, and temples 14) is preferably 30 degrees or more and 70 degrees or less. In particular, it is more preferable that the Shore hardness (A) of the outer portion is 55. Here, if the Shore hardness of the inner shell is less than 30 degrees, it is difficult to maintain the shape of the inner shell of the eyeglass frame, which is undesirable. Also, if the Shore hardness of the inner shell is more than 70 degrees, it is difficult to ensure cushioning properties, and it is undesirable that the shock cannot be sufficiently absorbed. Furthermore, if the Shore hardness of the inner shell is less than 30 degrees, the inner shell may peel off from the outer shell. In other words, the adhesion between the outer shell and the inner shell is reduced, and the strength of the inner shell itself is reduced. As a result, the inner shell may be damaged during molding, which may result in failure to mold the product or a reduced yield.

[0067] Specifically, for example, the thermoplastic resin rubber elastomer of the outer shell can be one that meets the P801-55A32 standard (a product of Dongguan Changsheng New Material Co., Ltd.). The thermoplastic resin rubber elastomer of the P801-55A32 standard contains styrene ethylene butylene styrene, naphthenic oil, polypropylene, calcium carbonate, and an antioxidant as ingredients.

[0068] In addition, it is preferable that the inner shell portion (e.g., the inner shell portions of the rim 11, bridge 12, and temples 14) have a larger frictional force than the outer shell portion (e.g., the outer shell portions of the rim 11, bridge 12, end piece 13, and temples 14). The frictional force of the inner shell portion improves the wearing comfort. In addition, the friction between the inner shell portion and the wearer is strong and the friction between the outer shell portion and a specified object is weak, which improves the effect of improving the safety of the wearer in the event of an impact caused by a collision or the like with the specified object.

[0069] Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within the scope that can achieve the object of the present invention are considered to be included in the present invention.

[0070] Moreover, the shapes and the like of the eyeglass frame 1 shown in Figs. 1 to 12 are merely examples for achieving the object of the present invention, and are not particularly limited.

[0071] (Variations) (1) In the above embodiment, the temple inner parts 14RI, 14LI of the temple part 14 are provided with a plurality of holes penetrating in the vertical direction, but the present invention is not limited to this. For example, the temple inner parts 14RI, 14LI may be provided with a plurality of bottomed holes instead of a plurality of holes penetrating in the vertical direction. Also, a mixture of a plurality of bottomed holes and a plurality of holes penetrating in the vertical direction may be provided. (2) In the above embodiment, an example was shown in which a hole penetrating in the vertical direction is formed in the bridge inner portion 12I of the bridge 12, but this is not limited to this. For example, the bridge inner portion 12I may be provided with a bottomed hole instead of a hole penetrating in the vertical direction. (3) In the above embodiment, an example was shown in which multiple bottomed holes are formed in the rim inner portions 11RI, 11LI of the rim 11, but this is not limited to this. For example, the rim inner portions 11RI, 11LI may be provided with multiple holes that penetrate in the vertical direction instead of multiple bottomed holes. Also, multiple bottomed holes and multiple holes that penetrate in the vertical direction may be mixed. (4) In the above embodiment, the eyeglass frame 1 is molded by simultaneously and integrally using two thermoplastic resin rubber elastomers with different hardness by two-color molding, and is molded by a thermoplastic resin rubber elastomer that is softer than the outer shell, but this is not particularly limited. That is, for example, the eyeglass frame may be molded by simultaneously and integrally using three or more thermoplastic resin rubber elastomers.

[0072] In summary, it is sufficient for the eyeglass frame to which the present invention is applied to have the following configuration, and various embodiments can be adopted. (1) That is, the eyeglass frame (eyeglass frame 1) to which the present invention is applied is: A pair of rims (rims 11R and 11L) for fixing lenses (lenses LR and LL), a bridge (bridge 12) for connecting the pair of rims, and temples (temples 14R and 14L, respectively) connected to the rims (rims 11R and 11L, respectively) via end pieces (end pieces 13R and 13L, respectively), The eyeglass frame is composed of an outer shell portion and an inner shell portion that is softer than the outer shell portion and is provided at least partially inside the outer shell portion, The inner portion includes a temple inner portion (temple inner portions 14RI and 14LI) provided inside the temples of the outer portion.

[0073] As a result, suppose that an impact is applied to the temples in the left-right direction (axis X direction) due to a collision of a certain object or the like. In this case, the temples of the eyeglass frame are deformed. The inner shell of the temple is made of a thermoplastic resin rubber elastic body which is softer than the outer shell. Therefore, after coming into contact with the wearer, the inner shell of the temple deforms first compared to the outer shell of the temple. In this way, the inner temple parts absorb shocks, improving the safety of the wearer. Also, in normal times when shocks are not applied, the outer temple parts, which are harder than the inner temple parts, maintain the shape, improving the wearing comfort.

[0074] (2) The temple inner portion has a plurality of holes or a plurality of bottomed holes penetrating in the up-down direction (axis Z direction) formed along the longitudinal direction of the temple (approximately axis Y direction).

[0075] This allows the multiple holes in the inner temple portion to deform (crush), making deformation easier. That is, the inner temple portion reduces impacts, improving the safety of the wearer.

[0076] (3) The inner temple portion has a wall portion (e.g., wall portion 14RI-W) existing between adjacent holes or apertures that slopes from the front to the rear (in the positive direction of axis Y) as it moves from the outside to the inside of the eyeglass frame (in 14R, as it moves in the positive direction of axis X).

[0077] As a result, the inner surface of the temple inner portion generates a frictional force against the wearer after coming into contact with the wearer, and the wall portion that slopes from the front to the rear as it moves from the outside to the inside of the eyeglass frame deforms relative to the inner surface of the temple inner portion so that the temple moves in the negative direction of the axis Y. This prevents the rims or lenses from touching the wearer, and if they do come into contact, the force with which they are pressed against the wearer is reduced, thereby improving the safety of the wearer.

[0078] (4) The holes or apertures are provided in a non-contact area of ​​the inner temple portion that does not come into contact with the head of a wearer wearing the eyeglass frames.

[0079] As a result, the wearer does not come into contact with unevenness or the like caused by a plurality of holes or the like penetrating in the vertical direction, and therefore does not feel uncomfortable when wearing the mask, i.e., the wearing comfort is improved.

[0080] (5) The inner portion further includes a bridge inner portion provided inside the bridge of the outer portion.

[0081] As a result, the inner bridge portion reduces impacts (particularly impacts from a direction facing forward relative to the wearer), improving the safety of the wearer.

[0082] (6) The inner bridge portion has a hole or a bottomed hole extending through it in the vertical direction.

[0083] This allows the holes or bottomed holes in the inner bridge portion to deform (crush) and thus the deformation is facilitated. In other words, the inner bridge portion reduces the impact, improving the safety of the wearer.

[0084] (7) The inner portion further includes a rim inner portion provided inside upper and lower edges of the rim of the outer portion.

[0085] As a result, for example, suppose that an impact is applied to the inner rim portion from a direction that is in front of the wearer. In this case, the rim of the eyeglass frame and the like are deformed. Specifically, for example, the inner surface of the inner rim portion comes into contact with the wearer. As described above, the inner rim portion is formed of a thermoplastic resin rubber elastic body that is softer than the outer rim portion. Therefore, the inner rim portion deforms first compared to the outer rim portion. Also, since the inner rim portion has multiple holes or multiple bottomed holes formed therein as described above, it is more easily deformed as the multiple holes or multiple bottomed holes deform (crush). This allows the inner rim portion to absorb impacts, improving the safety of the wearer.

[0086] (8) The rim inner portion has a plurality of bottomed holes formed along the left-right direction.

[0087] This allows the rim to deform overall due to the multiple bottomed holes, improving safety for the wearer.

[0088] (9) The hole on the upper edge side (axis Z positive side) of the rim inner portion has a bottom (bottom 11RI-B) formed on the lower side (axis Z negative side), The hole on the lower edge side (negative side of the axis Z) of the rim inner portion has a bottom (bottom portion 11RI-B) formed on the upper side (positive side of the axis Z).

[0089] As a result, deformation of the inner rim portion, and therefore the rim itself, due to a slight force (for example, the force of inertia associated with the wearer's movement) is slight, improving the fit.

[0090] (10) The Shore hardness (A) of the outer shell portion is set to be 100 degrees or more and 150 degrees or less.

[0091] This allows the eyeglass frame to maintain its shape. In addition, the Shore hardness of the outer shell allows the eyeglass frame to maintain its deformability. In other words, the eyeglass frame itself can absorb deformation and impact, and the risk of the eyeglass frame itself breaking can be reduced.

[0092] (11) The Shore hardness (A) of the inner shell portion is set to be 30 degrees or more and 70 degrees or less.

[0093] This allows the shape of the inner part of the eyeglass frame to be maintained, and also ensures cushioning. In other words, it is possible to maintain the shape while sufficiently absorbing impact.

[0094] (12) The end piece has a recess recessed from the outside toward the inside.

[0095] This allows the temple ends (the ends facing the rear from the wearer's perspective) to be deformed flexibly and without cracks, regardless of whether they are deformed in a direction that closes them or opens them. [Explanation of symbols]

[0096] 1···Eyeglass frame 1, 11, 11R, 11L···Rim, 11LI, 11RI···Rim inner portion, 11LO, 11RO···Bridge outer portion, 12···Bridge, 12I···Bridge inner portion, 12O···Bridge outer portion, 13, 13R, 13L···End piece, 14, 14R, 14L···Temple, 14RI, 14LI···Temple inner portion, 14RI, 14LI···Temple outer portion

Claims

1. A pair of rims for fixing lenses, a bridge connecting the pair of rims, and temples connected to the rims via end pieces, The eyeglass frame is composed of an outer shell portion and an inner shell portion that is softer than the outer shell portion and is provided at least partially inside the outer shell portion, The inner portion includes a temple inner portion provided inside the temple of the outer portion, The temple inner portion has a plurality of holes or a plurality of bottomed holes extending vertically therethrough along the longitudinal direction of the temple, The holes or the apertures are provided in a non-contact area of ​​the temple inner portion that is not in contact with the head of a wearer wearing the eyeglass frame, and are not provided in an area that is in contact with the head of a wearer. Glasses frames.

2. The hole is a hole that penetrates only in the vertical direction, The hole is a hole recessed in an upward or downward direction.

2. The eyeglass frame according to claim 1.

3. The inner portion further includes a bridge inner portion provided inside the bridge of the outer portion. The eyeglass frame according to claim 1 or 2.

4. The bridge inner portion has a hole or a bottomed hole penetrating in the vertical direction.

4. The eyeglass frame according to claim 3.

5. The inner portion further includes a rim inner portion provided inside the upper edge and the lower edge of the rim of the outer portion. The eyeglass frame according to claim 1 or 2.

6. The rim inner portion has a plurality of bottomed holes formed along the left-right direction.

6. The eyeglass frame according to claim 5.

7. The Shore hardness (A) of the outer shell is 100 degrees or more and 150 degrees or less. The eyeglass frame according to claim 1 or 2.

8. The Shore hardness (A) of the inner shell is 30 degrees or more and 70 degrees or less. The eyeglass frame according to claim 1 or 2.

9. The end piece has a recess recessed from the outside to the inside. The eyeglass frame according to claim 1 or 2.

Images