Spectacle frame

Abstract

The safety of a wearer and the performance of preventing the spectacle frame from being damaged are improved. A spectacle frame (1) having a pair of rims (11R, 11L) for fixing lenses (LR, LL), a nose bridge (12) connecting the pair of rims, and temples (14R, 14L) respectively connected to the rims (11R, 11L) via pegs (13R, 13L), the spectacle frame (1) comprising an outer shell part and an inner shell part, the inner shell part being harder than the outer shell part, the inner shell part being provided on at least a part of the inside of the outer shell part, and the inner shell part being provided on the outer shell part. The inner case part includes temple inner case parts (14RI, 14LI) provided on the inside of the temples of the outer case part.

Description

Technical Field

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

[0002] There has been a technique aimed at improving the safety of a wearer and the like and preventing breakage of an eyeglass frame when an external force such as impact is applied to the eyeglass frame due to exercise or the like (for example, see Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2023-157908 Summary of the Invention

[0006] However, further improvement is required in improving the safety of the wearer and preventing breakage of the eyeglass frame.

[0007] The present invention has been made in view of such circumstances, and aims to improve the safety of the wearer and the performance of preventing breakage of the eyeglass frame.

[0008] In order to achieve the above object, an eyeglass frame according to one aspect of the present invention includes a pair of rims for fixing lenses, a bridge connecting the pair of rims, and temple arms connected to the rims via hinges.

[0009] The eyeglass frame includes an outer shell portion and an inner shell portion, the inner shell portion is softer than the outer shell portion, and the inner shell portion is provided at least partially inside the outer shell portion.

[0010] The inner shell portion includes a temple inner shell portion provided inside the temple of the outer shell portion.

[0011] Advantages of the Invention

[0012] According to the present invention, it is possible to improve the safety of the wearer and the performance of preventing breakage of the eyeglass frame. Brief Description of the Drawings

[0013] Figure 1 A perspective view showing an overall view of glasses with an eyeglass frame to which an embodiment of the present invention is applied.

[0014] Figure 2 A perspective view showing an overall view of glasses with an eyeglass frame to which an embodiment of the present invention is applied, and is a perspective view shown from a different direction. Figure 1 A perspective view shown from a different direction.

[0015] Figure 3 For Figure 1 And Figure 2 A front view of the glasses shown.

[0016] Figure 4 is Figure 1 and Figure 2 a top view of the glasses shown

[0017] Figure 5 is Figure 4 a reference view further showing a cross-section and reference numerals in the top view of the glasses shown

[0018] Figure 6 is Figure 1 and Figure 2 a bottom view of the glasses shown

[0019] Figure 7 is Figure 1 and Figure 2 a left view of the glasses shown

[0020] Figure 8 is Figure 1 and Figure 2 a rear view of the glasses shown

[0021] Figure 9 is Figure 4 a combined cross-sectional view of line A - B - C - D of the glasses shown

[0022] Figure 10 is Figure 5 a cross-sectional view of line E - E of the glasses shown

[0023] Figure 11 is Figure 5 a cross-sectional view of line F - F of the glasses shown

[0024] Figure 12 is Figure 7 a cross-sectional view of line G - G of the glasses shown Detailed Embodiments

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings

[0026] First, use Figure 1 and Figure 2 to describe the overall situation of the glasses of the spectacle frame to which the embodiments of the present invention are applied

[0027] In addition, in the description of the spectacle frame according to the embodiments of the present invention, unless otherwise specified, the following defined directions are used. That is, a three-dimensional rectangular coordinate system composed of the following X-axis, Y-axis, and Z-axis is used

[0028] In the case where the wearer is wearing the spectacle frame facing forward, the left - right direction for the wearer is set as the X - axis. Additionally, the direction to the left for the wearer is referred to as the "positive X - axis direction", and the opposite direction is referred to as the "negative X - axis direction".

[0029] Furthermore, the front - back direction for the wearer is set as the Y - axis. Additionally, the direction to the front for the wearer is referred to as the "negative Y - axis direction", and the opposite direction is referred to as the "positive Y - axis direction".

[0030] Moreover, the up - down direction for the wearer, i.e., the direction in which gravity acts, is set as the Z - axis. Additionally, the opposite direction of the direction in which gravity acts (the upward direction) is referred to as the "positive Z - axis direction", and the opposite direction (the downward direction) is referred to as the "negative Z - axis direction".

[0031] Furthermore, the negative Y - axis direction is appropriately referred to as the "front side", the positive Y - axis direction is referred to as the "rear side", the positive Z - axis direction is referred to as the "upper side", and the negative Z - axis direction is referred to as the "lower side". Additionally, in the X - Y plane, the direction away from the wearer's head is appropriately referred to as the "outer side", and the opposite direction is referred to as the "inner side".

[0032] In addition, the spectacle frame of the present embodiment has a shape that is symmetric in the X - axis direction with respect to the Y - Z plane. Hereinafter, for the parts constituting the glasses and provided on the left and right of the wearer respectively, the part on the left side for the wearer is labeled with the reference numeral L, and the part on the right side for the wearer is labeled with the reference numeral R for explanation.

[0033] <Overall situation>

[0034] Figure 1 FIG. is a perspective view showing the overall situation of the glasses with the spectacle frame to which the present invention is applied.

[0035] Figure 2 FIG. is a perspective view showing the overall situation of the glasses with the spectacle frame to which the present invention is applied, and is a perspective view shown from a direction Figure 1 different from the above.

[0036] The spectacle frame 1 has lens rims 11R and 11L, a bridge 12, temples 13R and 13L, and temple pieces 14R and 14L.

[0037] Among them, the spectacle frame 1 of the present embodiment is integrally formed using a thermoplastic resin rubber elastomer (TPE: Thermoplastic elastomer). That is, the lens rims 11R and 11L, the bridge 12, the temples 13R and 13L, and the temple arms 14R and 14L are integrally inseparable. Hereinafter, for the sake of convenience of explanation, the integrally inseparable spectacle frame is divided into the respective parts of the lens rims 11R and 11L, the bridge 12, the temples 13R and 13L, and the temple arms 14R and 14L for explanation. In addition, in each of the drawings, auxiliary lines for distinguishing the respective parts are shown by attaching reference numerals starting with S.

[0038] In addition, the spectacle frame 1 of the present embodiment is integrally formed at the same time by two-shot injection molding using two thermoplastic resin rubber elastomers with different hardnesses. The outer shell portion of the spectacle frame 1 is formed of a harder thermoplastic resin rubber elastomer, which will be described later in detail. In addition, the inner shell portion of the spectacle frame 1 is formed of a thermoplastic resin rubber elastomer that is softer than the outer shell portion. That is, the outer shell portion and the inner shell portion are integrally formed and inseparable using two thermoplastic resin rubber elastomers with different hardnesses.

[0039] In this way, no metal is used in the material of the spectacle frame 1. Accordingly, the safety of wearers and the like is improved.

[0040] In the present embodiment, the outer shell portion of the spectacle frame 1 includes lens rim outer shell portions 11RO, 11LO, a bridge outer shell portion 12O, temples 13R, 13L, temple arm outer shell portions 14RO, 14LO. In addition, the inner shell portion of the spectacle frame 1 includes lens rim inner shell portions 11RI, 11LI, a bridge inner shell portion 12I, temple arm inner shell portions 14RI, 14LI.

[0041] In addition, hereinafter, reference numerals of the respective parts of the outer shell portion formed of a harder thermoplastic resin rubber elastomer are further marked with the O mark, and reference numerals of the respective parts of the inner shell portion formed of a thermoplastic resin rubber elastomer softer than the outer shell portion are further marked with the I mark for explanation.

[0042] The lens rims 11R and 11L are respectively parts of the spectacle frame 1 that surround and fix the lenses LR and LL.

[0043] In addition, the lens rim 11R includes a lens rim inner shell portion 11RI and a lens rim outer shell portion 11RO. In addition, the lens rim 11L includes a lens rim inner shell portion 11LI and a lens rim outer shell portion 11LO. As Figure 1 shown, the lens rim inner shell portions 11RI and 11LI have a plurality of bottomed holes. The specific structures of the lens rim inner shell portions 11RI and 11LI and the lens rim outer shell portions 11RO and 11LO of the lens rims 11R and 11L, and the advantages enjoyed due to having such structures will be described later.

[0044] In addition, hereinafter, if it is not necessary to separately distinguish between the lens rims 11R and 11L, they are collectively referred to as "lens rim 11".

[0045] The bridge 12 connects a pair of lens rims 11R and 11L.

[0046] The bridge 12 is connected to the lens rim 11R via the portion shown by the auxiliary line S1, and is connected to the lens rim 11L via the portion shown by the auxiliary line S4, thereby connecting a pair of lens rims 11R and 11L.

[0047] In addition, the bridge 12 includes a bridge inner shell portion 12I and a bridge outer shell portion 12O. As Figure 1 shown, the bridge inner shell portion 12I has a plurality of holes or a plurality of bottomed holes penetrating in the vertical direction. The specific structure of the bridge inner shell portion 12I and the bridge outer shell portion 12O of the bridge 12, and the advantages enjoyed due to having this structure will be described later.

[0048] The temple mounts 13R and 13L respectively connect the lens rims 11R and 11L to the temples 14R and 14L to be described later. The temple mount 13R is connected to the lens rim 11R via the portion shown by the auxiliary line S2, and is connected to the temple 14R via the portion shown by the auxiliary line S3, thereby connecting the lens rim 11R and the temple 14R. In addition, the temple mount 13L is connected to the lens rim 11L via the portion shown by the auxiliary line S5, and is connected to the temple 14L via the portion shown by the auxiliary line S6, thereby connecting the lens rim 11L and the temple 14L.

[0049] In addition, the temple mounts 13R and 13L respectively have recesses 13R-C and 13L-C that are recessed from the outside to the inside of the spectacle frame. By respectively having the recesses 13R-C and 13L-C, the temple mounts 13R and 13L will deform flexibly and will not break, etc., regardless of whether they are deformed in either the direction of closing the temples 14 (the direction in which the ends in the positive Y-axis direction approach each other) or the direction of opening the temples 14 (the direction in which the ends in the positive Y-axis direction move away from each other).

[0050] In addition, hereinafter, if it is not necessary to separately distinguish between the temple mounts 13R and 13L, they are collectively referred to as "temple mount 13".

[0051] The temples 14R and 14L are respectively connected to the lens rims 11R and 11L via the temple mounts 13R and 13L. The temple 14R is connected to the temple mount 13R via the portion shown by the auxiliary line S3, and the temple mount 13R is connected to the lens rim 11R via the portion shown by the auxiliary line S2. In addition, the temple 14L is connected to the temple mount 13L via the portion shown by the auxiliary line S6, and the temple mount 13L is connected to the lens rim 11L via the portion shown by the auxiliary line S5.

[0052] In addition, the temple 14R includes a temple inner shell portion 14RI and a temple outer shell portion 14RO. In addition, the temple 14L includes a temple inner shell portion 14LI and a temple outer shell portion 14LO. As Figure 1 shown, the temple inner shell 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 shell portions 14RI and 14LI and the temple outer shell portions 14RO and 14LO of the temples 14R and 14L, and the advantages enjoyed due to having such structures will be described later.

[0053] In addition, hereinafter, if the temples 14R and 14L do not need to be separately distinguished, they will be collectively referred to as "temple 14".

[0054] Above, the overall situation of the glasses of the spectacle frame 1 to which the embodiments of the present invention are applied has been described by using Figure 1 and Figure 2 .

[0055] <Detailed Structure>

[0056] Hereinafter, on the basis of Figure 1 and Figure 2 , the detailed structure of the glasses of the spectacle frame 1 to which the embodiments of the present invention are applied will be described by using Figures 3 to 7 .

[0057] Figure 3 is Figure 1 and Figure 2 the front view of the glasses shown.

[0058] Figure 4 is Figure 1 and Figure 2 the top view of the glasses shown.

[0059] Figure 5 is a reference view further showing the cross-section and reference numerals in the top view of the glasses shown in Figure 4 .

[0060] Figure 6 is Figure 1 and Figure 2 the bottom view of the glasses shown.

[0061] Figure 7 is Figure 1 and Figure 2 the left view of the glasses shown.

[0062] Figure 8 is Figure 1 and Figure 2 the rear view of the glasses shown.

[0063] In addition, the right view is omitted because it is symmetric to the left view.

[0064] As Figure 1 and Figure 2 shown, the inner lens housing parts 11RI and 11LI of the lens frame 11 have bottomed holes (hereinafter referred to as bottomed holes) that are recessed in the upward or downward direction.

[0065] Specifically, for example, a plurality of bottomed holes that are recessed from the upper side to the lower side are formed along the left - right direction (X - direction) on the upper edge side 11RI - ST of the inner lens housing part 11RI of the lens frame 11R. Similarly, a plurality of bottomed holes that are recessed from the upper side to the lower side are formed along the left - right direction on the upper edge side 11LI - ST of the inner lens housing part 11LI of the lens frame 11L.

[0066] Herein, the upper edge sides 11RI - ST and 11LI - ST of the inner lens housing parts 11RI and 11LI respectively refer to the edge parts on the positive Z - axis direction side of the lens frames 11R and 11L.

[0067] In addition, a plurality of bottomed holes that are recessed from the lower side to the upper side are formed along the left - right direction (X - axis direction) on the lower edge side 11RI - SB of the inner lens housing part 11RI of the lens frame 11R. Similarly, a plurality of bottomed holes that are recessed from the lower side to the upper side are formed along the left - right direction on the lower edge side 11LI - SB of the inner lens housing part 11LI of the lens frame 11L.

[0068] Herein, the lower edge sides 11RI - SB and 11LI - SB of the inner lens housing parts 11RI and 11LI respectively refer to the edge parts on the negative Z - axis direction side of the lens frames 11R and 11L.

[0069] In addition, a plurality of holes that penetrate in the up - down direction are formed on the upper surface 12I - ST of the inner nose bridge housing part 12I of the nose bridge 12.

[0070] In addition, a plurality of holes that penetrate in the up - down direction are formed along the length direction of the temple 14R in the inner temple housing part 14RI of the temple 14R. Similarly, a plurality of holes that penetrate in the up - down direction are formed along the length direction of the temple 14L in the inner temple housing part 14LI of the temple 14L.

[0071] Herein, the length directions of the inner temple housing parts 14RI and 14LI respectively refer to the approximate Y - axis directions of the temples 14R and 14L.

[0072] Here, the structure of the plurality of holes that penetrate in the up - down direction in the temple 14 and the advantages obtained by having this structure will be described.

[0073] As Figures 1 to 4As shown, the inner temple shell portion 14RI of the temple 14R has an upper surface 14RI-ST, an inner surface 14RI-SI, and a lower surface 14RI-SB. In addition, the upper surface 14RI-ST and the lower surface 14RI-SB are smoothly connected as one surface at one end of the temple 14R in the positive Y-axis direction (+Y side end).

[0074] Similarly, the inner temple shell portion 14LI of the temple 14L has an upper surface 14LI-ST, an inner surface 14LI-SI, and a lower surface 14LI-SB. Additionally, the upper surface 14LI-ST and the lower surface 14LI-SB are smoothly connected as one surface at one end of the temple 14L in the positive Y-axis direction (+Y side end).

[0075] As Figure 1 and Figure 2 shown, etc., in the inner temple shell portion 14RI, a plurality of holes penetrating from the upper surface 14RI-ST of the inner temple shell portion 14RI to the lower surface 14RI-SB are formed along the length direction of the temple 14R.

[0076] Similarly, in the inner temple shell portion 14LI, a plurality of holes penetrating from the upper surface 14RI-ST of the inner temple shell portion 14RI to the lower surface 14RI-SB are formed along the length direction of the temple 14R.

[0077] In addition, as Figure 5 shown, adjacent holes in the inner temple shell portion 14RI are respectively separated by wall portions 14RI-W1 to 14RI-W6. The wall portions 14RI-W1 to 14RI-W6 are respectively inclined from the front side (-Y side) to the rear side (+Y side) as they go from the outside to the inside of the spectacle frame 1. In addition, hereinafter, if it is not necessary to separately distinguish the wall portions 14RI-W1 to 14RI-W6, they will be collectively referred to as "wall portion 14RI-W".

[0078] Similarly, adjacent holes in the inner temple shell portion 14LI are respectively separated by wall portions 14LI-W1 to 14LI-W6. The wall portions 14LI-W1 to 14LI-W6 are respectively inclined from the front side (-Y side) to the rear side (+Y side) as they go from the outside to the inside of the spectacle frame 1. In addition, hereinafter, if it is not necessary to separately distinguish the wall portions 14LI-W1 to 14LI-W6, they will be collectively referred to as "wall portion 14LI-W".

[0079] Here, for example, it is assumed that a prescribed object collides with the temple 14R from the negative X-axis direction toward the positive X-axis direction and applies an impact thereto. In this case, the temple 14R of the spectacle frame 1 and the like will deform. Specifically, for example, first, the inner surface 14RI-SI of the inner temple portion 14RI will contact the wearer. As described above, the inner temple portion 14R is formed of a thermoplastic resin rubber elastomer softer than the outer shell portion. Therefore, after contacting the wearer, the inner temple portion 14RI deforms before the outer temple portion 14RO. In addition, as described above, the inner temple portion 14RI is formed with a plurality of holes, so the plurality of holes will deform (be crushed), making it easier to deform.

[0080] Accordingly, due to the presence of the inner temple portion 14RI, the impact is reduced and the safety of the wearer is improved.

[0081] In addition, after the inner surface 14RI-SI of the inner temple portion 14RI contacts the wearer, a frictional force is generated on the wearer. On this basis, as the wall portion 14RI-W that slopes from the front side to the rear side toward the inside of the spectacle frame 1 with respect to the inner surface 14RI-SI of the inner temple portion 14RI deforms in a manner that causes the temple 14R to move in the negative Y-axis direction.

[0082] Accordingly, it is possible to prevent the lens ring 11R and the lens LR from contacting the wearer, and even in the case of contact, the force pressing on the wearer is reduced, thereby improving the safety of the wearer.

[0083] In addition, when the wall portion 14RI-W that slopes from the front side to the rear side deforms, two or more wall portions 14RI-W overlap each other in the X-axis direction. As a result, the thickness of the wall portion 14RI-W in the X-axis direction becomes the sum of the thicknesses of the overlapping wall portions 14R. That is, the inner temple portion 14RI, which is a thermoplastic resin rubber elastomer softer than the outer shell portion, has room for deformation corresponding to the sum of the thicknesses of the overlapping wall portions 14RI-W.

[0084] Throughout the entire range having a plurality of holes penetrating in the up-down direction, the wall portion 14RI-W can have a region where it overlaps substantially evenly when deformed. Accordingly, the safety of the wearer is improved.

[0085] In addition, when deformed in the direction of opening the temple 14 (the direction in which the ends in the positive Y-axis direction move away from each other), a restoring force acts in the long side direction of the X-Y plane of the wall portion 14RI-W. Accordingly, the spectacle frame 1 is easily restored to its normal shape. That is, it is easier to restore to the normal shape itself, so the wearing comfort is improved, and even if deformed repeatedly, etc., it is easily restored to the normal shape, so the lifespan of the spectacle frame 1 is improved.

[0086] In addition, the same applies to the case where an impact is applied to the temple 14L.

[0087] In addition, a plurality of holes penetrating in the vertical direction are provided in a non-contact area of the temple inner shell parts 14RI and 14LI that does not contact the head of the wearer wearing the spectacle frame.

[0088] The non-contact area refers to the area that does not contact the wearer under normal circumstances. More specifically, when the wearer wears the spectacle frame, it refers to the area other than the parts of the rear end (+Y side end) of the temple that contact the head and ears of the wearer.

[0089] As described above, a plurality of holes penetrating in the vertical direction exist in such a way as to pass through the upper surface 14RI-ST and the lower surface 14RI-SB of the temple inner shell part 14RI. Specifically, for example, a plurality of holes penetrating in the vertical direction do not have a structure in the inner surface 14RI-SI of the temple inner shell part 14RI that contacts the head of the wearer.

[0090] Accordingly, the wearer does not come into contact with irregularities caused by a plurality of holes penetrating in the vertical direction, etc., so that the effect of not causing discomfort to the wearing feeling, that is, improving the wearing feeling, is obtained.

[0091] In addition, near the part of the temple inner shell part 14RI of the temple 14R where a plurality of holes are provided, the length in the substantially Y-axis direction of the inner surface 14RI-SI is longer than the length in the substantially Y-axis direction of the surface that contacts the temple outer shell part 14RO. Accordingly, even if deformation occurs in the direction of opening the temple 14 (the direction in which the ends in the positive Y-axis direction move away from each other), it can deform flexibly to reduce the risk of cracking, etc.

[0092] Above, the specific structure of the plurality of holes penetrating in the vertical direction that the temple 14 has and the advantages enjoyed due to having this structure have been mainly described using the temple 14R.

[0093] As Figure 5 etc. show, the temple 14L has substantially the same structure as the temple 14R and has the advantages enjoyed due to having this structure.

[0094] Next, the structure of the plurality of bottomed holes that the lens frame 11 has and the advantages enjoyed due to having this structure will be described using the lens frame 11R.

[0095] In addition, a plurality of adjacent bottomed holes in the lens frame inner shell part 11RI are respectively formed with partitions by wall parts 11RI-W in the same way as the temple inner shell part 14RI. The plurality of wall parts 11RI-W of the lens frame inner shell part 11RI are inclined from the bridge 12 side toward the endpiece 13R side as they go from the outside to the inside of the spectacle frame 1.

[0096] Here, for example, it is assumed that a regulated object collides with the inner shell portion 11RI of the lens frame from the negative Y-axis direction toward the positive Y-axis direction and applies an impact thereto. In this case, the lens frame 11R of the spectacle frame 1 and the like will be deformed. Specifically, for example, the inner surface of the inner shell portion 11RI of the lens frame will contact the wearer. As described above, the inner shell portion 11RI of the lens frame is formed of a thermoplastic resin rubber elastomer that is softer than the outer shell portion 11RO of the lens frame. Therefore, the inner shell portion 11RI of the lens frame deforms earlier than the outer shell portion 11RO of the lens frame. In addition, as described above, the inner shell portion 11RI of the lens frame is formed with a plurality of bottomed holes, so that the plurality of bottomed holes will be deformed (crushed), and thus it is easier to deform.

[0097] Accordingly, due to the presence of the inner shell portion 11RI of the lens frame, the impact is reduced, and the safety of the wearer is improved.

[0098] In addition, after the inner surface of the inner shell portion 11RI of the lens frame contacts the wearer, a frictional force is generated on the wearer. On this basis, the wall portion 12O-W that is inclined from the nose bridge 12 side toward the temple 13R side as it goes from the outside to the inside of the spectacle frame 1 deforms with respect to the inner surface of the inner shell portion 11RI of the lens frame so as to move the lens frame 11R in the positive X-axis direction. The positive X-axis direction is the direction away from the right eye of the wearer at the nose pad portion and the like of the lens frame 11R.

[0099] Accordingly, it is possible to prevent the nose pad portion and the like of the lens frame 11R from contacting the wearer (especially the right eyeball), and even in the case of contact, the force pressing on the wearer is reduced, and the safety of the wearer is improved.

[0100] In addition, when the wall portion 11RI-W of the inner shell portion 11RI of the lens frame is deformed, two or more wall portions 11RI-W overlap each other in the Y-axis direction. As a result, the thickness of the wall portion in the Y-axis direction becomes the sum of the thicknesses of the overlapping wall portions 11RI-W. That is, the inner shell portion 11RI of the lens frame, which is a thermoplastic resin rubber elastomer softer than the outer shell portion, has a margin for deformation corresponding to the sum of the thicknesses of the overlapping wall portions 11RI-W.

[0101] Over the entire range having a plurality of bottomed holes, the wall portion 11RI-W can have a region where they overlap substantially evenly in the case of deformation. Accordingly, the safety of the wearer is improved.

[0102] In addition, as described above, when deformation occurs in the direction of closing the temple 14 (the direction in which the ends in the positive Y-axis direction approach each other) or in the direction of opening the temple 14 (the direction in which the ends in the positive Y-axis direction move away from each other), due to the existence of the concave portions 13R-C and 13L-C of the ferrules 13R and 13L respectively, it will deform flexibly and no rupture or the like will occur. However, when the lens frame 11 also deforms further, a restoring force acts in the longitudinal direction of the wall portion 11RI-W. Accordingly, the spectacle frame 1 is easily restored to its normal shape. That is, it is even easier to restore to the normal shape itself, so the wearing comfort is improved, and it is also easily restored to the normal shape even after repeated deformation or the like, so the lifespan of the spectacle frame 1 is improved.

[0103] Above, the specific structure of the multiple bottomed holes of the lens frame 11R and the advantages enjoyed due to having this structure have been described.

[0104] As Figure 5 shown, etc., the lens frame 11L has substantially the same structure as the lens frame 11R and has the advantages enjoyed due to having this structure.

[0105] Next, the structure of the hole penetrating in the vertical direction of the bridge 12 and the advantages enjoyed due to having this structure will be described.

[0106] In addition, the holes penetrating in the vertical direction of the inner bridge portion 12I are formed side by side with the bottomed holes provided on the inner lens frame portions 11RI and 11LI adjacent to the inner bridge portion 12I and are separated by the wall portion 120-W. The wall portion 120-W forming the above holes of the inner bridge portion 12I inclines from the center of the bridge 12 toward the ferrule 13 side as it goes from the outside to the inside of the spectacle frame 1.

[0107] Here, for example, assume that a specified object collides with the inner bridge portion 12I from the negative Y-axis direction toward the positive Y-axis direction. In this case, the bridge 12 of the spectacle frame 1 will deform together with the lens frames 11R, 11L, etc. Specifically, for example, the inner surface of the inner bridge portion 12I will contact the wearer. As described above, the inner bridge portion 12I is formed of a thermoplastic resin rubber elastomer softer than the outer shell portion. Therefore, the inner bridge portion 12I deforms earlier than the bridge outer shell portion 12O. In addition, since the inner bridge portion 12I is formed with a hole penetrating in the vertical direction as described above, this through-hole will deform (be crushed), making it easier to deform.

[0108] Accordingly, due to the existence of the inner bridge portion 12I, the impact (especially the impact from the front direction for the wearer) is reduced, and the safety of the wearer is improved.

[0109] In addition, when the wall portion 120-W of the inner nose bridge portion 12I is deformed, it will overlap with the wall portions 11RI-W of the multiple bottomed holes of the adjacent inner lens frame portions 11RI and 11RI in the Y-axis direction. As a result, the thickness of the wall portion in the Y-axis direction becomes the sum of the thicknesses of the overlapping wall portions 11RI-W and 120-W. That is, the inner nose bridge portion 12I, which is a thermoplastic resin rubber elastomer softer than the outer shell portion, has room for deformation corresponding to the sum of the thicknesses of the overlapping wall portions.

[0110] Throughout the entire range having holes penetrating in the up-and-down direction, the wall portion can have regions that overlap substantially evenly when deformed. Accordingly, the safety of the wearer is improved.

[0111] As described above, the specific structure of the holes penetrating in the up-and-down direction in the nose bridge 12 and the advantages resulting from having this structure have been explained.

[0112] <Shape of the holes penetrating in the up-and-down direction and bottomed holes>

[0113] Next, Figures 9 to 12 will be used to explain the shape of the holes or bottomed holes penetrating in the up-and-down direction described above.

[0114] Figure 9 is Figure 4 a combined sectional view of the glasses shown along the A-B-C-D line.

[0115] As Figure 9 shown, the hole in the upper edge side 11RI-ST of the inner lens frame portion 11RI of the lens frame 11R has a bottom 11RI-B. Accordingly, for the force in the X-Y plane, not only does the wall portion 11RI-W of the upper edge side 11RI-ST of the inner lens frame portion 11RI of the lens frame 11R prevent deformation, but the bottom 11RI-B also prevents deformation. As a result, for a slight force (such as the inertial force generated by the movement of the wearer), the deformation of the inner lens frame portion 11RI and further the lens frame 11R becomes slight, so the wearing comfort is improved.

[0116] In addition, the hole in the upper edge side (positive Z-axis side) of the inner lens frame portion 11RI of the lens frame 11R is a bottomed hole that is recessed from the upper side of the upper edge side 11RI-ST toward the lower side, and a bottom (bottom 11RI-B) is formed on the lower side (negative Z-axis side). Accordingly, when worn, multiple bottomed holes can be observed from the positive Z-axis direction. Accordingly, while the appearance design of the glasses frame 1 is improved, the above-mentioned advantage of improving the wearing comfort can also be enjoyed.

[0117] In addition, the hole on the upper edge side 11RI-ST (positive Z-axis side) is recessed from the upper side to the lower side of the upper edge side 11RI-ST. Accordingly, in the case of manufacturing the spectacle frame 1 using upper and lower molds, demolding can be easily performed, and the manufacturing of the spectacle frame can be made easier.

[0118] In addition, the weight of the inner shell portion of the lens ring can be reduced, and the material used for the inner shell portion of the lens ring can be decreased, contributing to cost reduction.

[0119] As Figure 9 shown, the lens ring 11L has substantially the same structure as the lens ring 11R and has the advantages resulting from having this structure.

[0120] Figure 10 For Figure 5 the E-E line cross-sectional view of the spectacle shown.

[0121] As Figure 10 shown, the hole on the lower edge side 11RI-SB of the inner shell portion 11RI of the lens ring 11R has a bottom 11RI-B. Accordingly, for the force in the X-Y plane, not only the wall portion 11RI-W of the lower edge side 11RI-SB of the inner shell portion 11RI of the lens ring 11R obstructs deformation, but the bottom 11RI-B also obstructs deformation. As a result, for a slight force (e.g., the inertial force generated along with the movement of the wearer), the deformation of the inner shell portion 11RI and further the lens ring 11R becomes slight, and thus the wearing comfort is improved.

[0122] In addition, the hole on the lower edge side 11RI-SB (negative Z-axis side) of the inner shell portion 11RI of the lens ring 11R is a bottomed hole recessed from the lower side to the upper side of the lower edge side 11RI-SB, and has a bottom (bottom 11RI-B) formed on the upper side (positive Z-axis side). Accordingly, when worn, a plurality of bottomed holes can be observed from the negative Z-axis direction. Accordingly, while the design property of the spectacle frame 1 is improved, the above-mentioned advantage of improving the wearing comfort can also be enjoyed.

[0123] In addition, the hole on the lower edge side 11RI-SB (negative Z-axis side) is recessed from the lower side to the upper side of the lower edge side 11RI-SB. Accordingly, in the case of manufacturing the spectacle frame 1 using upper and lower molds, there is also an effect that demolding can be easily performed and the manufacturing of the spectacle frame becomes easier.

[0124] In addition, the weight of the inner shell portion of the lens ring can be reduced, and the material used for the inner shell portion of the lens ring can be decreased, contributing to cost reduction.

[0125] As Figure 10 shown, the lens ring 11L has substantially the same structure as the lens ring 11R and has the advantages resulting from having this structure.

[0126] Figure 11 The Figure 5 F-F line cross-sectional view of the glasses shown

[0127] Figure 12 The Figure 7 G-G line cross-sectional view of the glasses shown

[0128] As Figure 11 and Figure 12 shown, the holes provided on the inner leg shell portion 14RI of the temple 14R are holes penetrating in the vertical direction. Accordingly, the weight reduction of the inner leg shell portion can be achieved, and the material used for the inner leg shell portion can be reduced, which helps to reduce costs. In addition, in the temple 14R that contacts the side of the wearer's head, sebum stains and the like are likely to accumulate in the holes. Therefore, in the temple 14R, it becomes a hole penetrating in the vertical direction that is easier to clean than a blind hole

[0129] In addition, as Figure 9 shown, the holes provided on the inner nose bridge shell portion 12I of the nose bridge 12 are holes penetrating in the vertical direction. Accordingly, the weight reduction of the inner nose bridge shell portion 12I can be achieved, and the material used for the inner nose bridge shell portion 12I can be reduced, which helps to reduce costs

[0130] <Hardness of the outer shell portion and the inner shell portion>

[0131] Preferably, the Shore hardness (A) of the outer shell portion (for example, the outer shell portions of the lens rim 11, the nose bridge 12, the temple end 13, and the temple 14) is 100 degrees or more and 150 degrees or less. In particular, more preferably, the Shore hardness (A) of the outer shell portion is 120

[0132] Here, if the Shore hardness of the outer shell portion is less than 100 degrees, it is difficult to maintain the shape of the spectacle frame, which is not ideal. In addition, if the Shore hardness of the outer shell portion is greater than 150 degrees, the deformability of the spectacle frame becomes low, that is, the spectacle frame itself becomes difficult to deform, and it cannot sufficiently absorb impacts, and the spectacle frame itself will be damaged, which is not ideal. In addition, when the Shore hardness of the outer shell portion is greater than 150, it is difficult to take out the molded spectacle frame 1 from the mold when performing injection molding, which is not ideal

[0133] Specifically, for example, as the thermoplastic resin rubber elastomer of the outer shell portion, the TED-602 specification (product of Dongguan Changsheng New Material Co., Ltd.) can be adopted. The thermoplastic resin rubber elastomer of the TED-602 specification contains components of styrene-ethylene-butene-styrene, naphthenic oil, polypropylene, calcium carbonate, and antioxidant

[0134] In addition, preferably, the Shore hardness (A) of the inner shell part (e.g., the inner shell parts of the spectacle frame 11, the nose bridge 12, and the temple 14) is 30 degrees or more and 70 degrees or less. In particular, more preferably, the Shore hardness (A) of the outer shell part is 55.

[0135] Here, if the Shore hardness of the inner shell part is less than 30 degrees, it is difficult to maintain the shape of the inner shell part of the spectacle frame, which is not ideal. In addition, if the Shore hardness of the inner shell part is greater than 70 degrees, it is difficult to ensure the cushioning performance and cannot sufficiently absorb impacts, which is not ideal.

[0136] In addition, if the Shore hardness of the inner shell part is less than 30 degrees, the inner shell part may peel off from the outer shell part. That is, while the adhesion between the outer shell part and the inner shell part becomes low, the strength of the inner shell part itself will become low. As a result, the possibility of the inner shell part being damaged during molding, resulting in the inability to complete the molding or a decrease in the product yield, becomes high.

[0137] Specifically, for example, as the thermoplastic resin rubber elastomer of the outer shell part, the P801-55A32 specification (product of Dongguan Changsheng New Material Co., Ltd.) can be used. The thermoplastic resin rubber elastomer of the P801-55A32 specification contains components such as styrene-ethylene-butene-styrene, naphthenic oil, polypropylene, calcium carbonate, and antioxidant.

[0138] In addition, preferably, the frictional force of the inner shell part (e.g., the inner shell parts of the spectacle frame 11, the nose bridge 12, and the temple 14) is greater than that of the outer shell part (e.g., the outer shell parts of the spectacle frame 11, the nose bridge 12, the hinge 13, and the temple 14). Due to the frictional force of the inner shell part, the wearing comfort is improved. In addition, because the friction between the inner shell part and the wearer is strong while the friction between the outer shell part and the specified object is weak, the effect of improving the safety of the wearer in the case of impacts applied due to collisions with the above-mentioned specified object is enhanced.

[0139] The above describes one embodiment of the present invention. The present invention is not limited to the above embodiment, and deformations, improvements, etc. within the scope that can achieve the purpose of the present invention are considered to be included in the present invention.

[0140] In addition, Figures 1 to 12 The shape, etc. of the spectacle frame 1 shown are only examples for achieving the purpose of the present invention and are not particularly limited.

[0141] (Variant example)

[0142] (1) In the above-described embodiment, an example is shown in which a plurality of holes penetrating in the vertical direction are formed in the inner temple shells 14RI and 14LI of the temple legs 14, but it is not limited thereto. For example, a plurality of blind holes may be provided in the inner temple shells 14RI and 14LI instead of the plurality of holes penetrating in the vertical direction. Additionally, a plurality of blind holes and a plurality of holes penetrating in the vertical direction may coexist.

[0143] (2) In the above-described embodiment, an example is shown in which a hole penetrating in the vertical direction is formed in the inner bridge shell 12I of the bridge 12, but it is not limited thereto. For example, a blind hole may be provided in the inner bridge shell 12I instead of the hole penetrating in the vertical direction.

[0144] (3) In the above-described embodiment, an example is shown in which a plurality of blind holes are formed in the inner lens ring shells 11RI and 11LI of the lens ring 11, but it is not limited thereto. For example, a plurality of holes penetrating in the vertical direction may be provided in the inner lens ring shells 11RI and 11LI instead of the plurality of blind holes. Additionally, a plurality of blind holes and a plurality of holes penetrating in the vertical direction may coexist.

[0145] (4) In the above-described embodiment, the spectacle frame 1 is integrally formed by two-color injection molding using two thermoplastic resin rubber elastomers having different hardnesses, and is formed of a thermoplastic resin rubber elastomer softer than the outer shell portion, but it is not limited thereto. That is, for example, the spectacle frame may also be integrally formed using three or more thermoplastic resin rubber elastomers at the same time.

[0146] In summary, it is sufficient for the spectacle frame to which the present invention is applied to have the following configuration, and various embodiments may be adopted. (1)

[0148] That is, the spectacle frame (spectacle frame 1) to which the present invention is applied has a pair of lens rings (lens rings 11R and 11L) for fixing lenses (lenses LR and LL), a bridge (bridge 12) connecting the pair of lens rings, and temple legs (temple legs 14R and 14L) connected to the lens rings (lens rings 11R and 11L, respectively) via temple pins (temple pins 13R and 13L, respectively). In this spectacle frame,

[0149] the spectacle frame includes an outer shell portion and an inner shell portion, the hardness of the inner shell portion is softer than that of the outer shell portion, and the inner shell portion is provided at least partially inside the outer shell portion,

[0150] the inner shell portion includes inner temple shells (inner temple shells 14RI and 14LI, respectively), and the inner temple shells are provided inside the temple legs of the outer shell portion.

[0151] Accordingly, it is assumed that a specified object has collided with the temple in the left-right direction (X-axis direction) and applied an impact thereto. In this case, the temple of the spectacle frame and the like will be deformed. The inner shell portion of the temple is formed of a thermoplastic resin rubber elastomer that is softer than the outer shell portion. Therefore, after contacting the wearer, the inner shell portion of the temple deforms earlier than the outer shell portion of the temple.

[0152] In this way, due to the presence of the inner shell portion of the temple, the impact is reduced and the safety of the wearer is improved. In addition, during normal times other than when an impact is applied, the shape is maintained due to the presence of the outer shell portion of the temple that is harder than the inner shell portion of the temple, and the wearing comfort is improved. (2)

[0154] A plurality of holes or a plurality of bottomed holes penetrating in the up-down direction (Z-axis direction) are formed in the inner shell portion of the temple along the length direction of the temple (substantially Y-axis direction).

[0155] Accordingly, the plurality of holes in the inner shell portion of the temple are deformed (crushed), and it becomes easier to deform. That is, due to the presence of the inner shell portion of the temple, the impact is reduced and the safety of the wearer is improved. (3)

[0157] Regarding the inner shell portion of the temple, the wall portion (for example, the wall portion 14RI-W) existing between the adjacent holes or the holes is inclined from the front side to the rear side (in the positive Y-axis direction) as it goes from the outside to the inside of the spectacle frame (in 14R as it goes toward the positive X-axis direction).

[0158] Accordingly, in addition, the inner surface of the inner shell portion of the temple generates frictional force on the wearer after contacting the wearer. On this basis, the wall portion inclined from the front side to the rear side as it goes from the outside to the inside of the spectacle frame deforms with respect to the inner surface of the inner shell portion of the temple in a manner that moves the temple in the negative Y-axis direction.

[0159] Accordingly, it is possible to prevent the lens frame and the lens from contacting the wearer, and even in the case of contact, the force pressing on the wearer is reduced, thereby improving the safety of the wearer. (4)

[0161] The plurality of holes or the plurality of holes are provided in a non-contact area, which is an area in the inner shell portion of the temple that does not contact the head of the wearer wearing the spectacle frame.

[0162] Accordingly, the wearer does not contact the unevenness or the like caused by the plurality of holes penetrating in the up-down direction, so that the wearing comfort is not affected, that is, the wearing comfort is improved. (5)

[0164] The inner shell portion further includes a nose bridge inner shell portion provided inside the nose bridge of the outer shell portion.

[0165] Accordingly, due to the existence of the inner nasal bridge portion, impacts (especially impacts from the front for the wearer) are reduced, and the safety of the wearer is improved. (6)

[0167] A hole or a bottomed hole penetrating in the vertical direction is formed in the inner nasal bridge portion.

[0168] Accordingly, through the deformation (being crushed) of the multiple holes or bottomed holes in the inner nasal bridge portion, it is more easily deformed. That is, due to the existence of the inner nasal bridge portion, impacts are reduced, and the safety of the wearer is improved. (7)

[0170] The inner shell portion further includes an inner lens frame shell portion provided inside the upper and lower edges of the lens frame of the outer shell portion.

[0171] Accordingly, for example, it is assumed that an impact from the front for the wearer is applied to the inner lens frame shell portion. In this case, the lens frame of the spectacle frame and the like will be deformed. Specifically, for example, the inner surface of the inner lens frame shell portion will contact the wearer. As described above, the inner lens frame shell portion is formed of a thermoplastic resin rubber elastomer softer than the lens frame outer shell portion. Therefore, the inner lens frame shell portion deforms earlier than the lens frame outer shell portion. In addition, a plurality of holes or a plurality of bottomed holes are formed in the inner lens frame shell portion as described above, so the plurality of holes or the plurality of bottomed holes will be deformed (being crushed), and thus it is more easily deformed.

[0172] Accordingly, due to the existence of the inner lens frame shell portion, impacts are reduced, and the safety of the wearer is improved. (8)

[0174] A plurality of bottomed holes are formed in the inner lens frame shell portion in the left - right direction.

[0175] Accordingly, due to the existence of the plurality of bottomed holes, the lens frame is deformed as a whole, and thus the safety of the wearer is improved. (9)

[0177] The hole on the upper edge side (positive Z - axis side) of the inner lens frame shell portion has a bottom (bottom 11RI - B) formed on the lower side (negative Z - axis side),

[0178] The hole on the lower edge side (negative Z - axis side) of the inner lens frame shell portion has a bottom (bottom 11RI - B) formed on the upper side (positive Z - axis side).

[0179] Accordingly, for a slight force (such as the inertial force generated by the movement of the wearer), the deformation of the inner lens frame shell portion and thus the lens frame becomes slight, and thus the wearing comfort is improved. (10)

[0181] The Shore hardness (A) of the outer shell portion is 100 degrees or more and 150 degrees or less.

[0182] Accordingly, the shape of the spectacle frame can be maintained. In addition, the Shore hardness of the outer shell portion can maintain the deformability of the spectacle frame. That is, the deformation of the spectacle frame itself and the absorption of impact can be achieved, and the risk of damage to the spectacle frame itself can also be reduced. (11)

[0184] The Shore hardness (A) of the inner shell portion is 30 degrees or more and 70 degrees or less.

[0185] Accordingly, the shape of the inner shell portion of the spectacle frame can be maintained. In addition, the cushioning performance can be ensured. That is, the shape can be maintained while sufficiently absorbing impact. (12)

[0187] The temple has a recess that is recessed from the outside toward the inside.

[0188] Accordingly, no matter in which direction it is deformed, whether in the direction of closing the end of the temple (the end at the rear for the wearer) or in the direction of opening the temple, it can be deformed flexibly without breakage or the like.

[0189] Description of Reference Numerals

[0190] 1: Spectacle frame, 11, 11R, 11L: Lens ring, 11LI, 11RI: Inner shell portion of lens ring, 11LO, 11RO: Outer shell portion of bridge of nose, 12: Bridge of nose, 12I: Inner shell portion of bridge of nose, 12O: Outer shell portion of bridge of nose, 13, 13R, 13L: Temple, 14, 14R, 14L: Temple, 14RI, 14LI: Inner shell portion of temple, 14RI, 14LI: Outer shell portion of temple.

Claims

1. A spectacle frame, characterized in that: The invention comprises: a pair of lens rings for fixing lenses; a nose bridge connected to the pair of lens rings; and temples connected to the lens rings via a pile head. The spectacle frame comprises an outer shell and an inner shell, wherein the inner shell is softer than the outer shell, and the inner shell is disposed on at least a portion of the inner side of the outer shell. The inner shell part includes a temple inner shell part, and the temple inner shell part is arranged on the inner side of the temple of the outer shell part.

2. The spectacle frame according to claim 1, characterized in that: A plurality of holes or a plurality of holes with bottoms penetrating in the up-down direction are formed in the inner shell part of the temple along the length direction of the temple.

3. The spectacle frame according to claim 2, characterized in that: Regarding the temple inner shell portion, a wall portion existing between the adjacent holes or the apertures is inclined from the front side to the rear side as it moves from the outside to the inside of the eyeglass frame.

4. The spectacle frame according to claim 2, characterized in that: The plurality of holes or the plurality of holes are provided in a non-contact region, which is a region of the inner shell portion of the temple that does not contact the head of a wearer wearing the spectacle frame.

5. The spectacle frame according to any one of claims 1 to 4, characterized in that: The inner shell portion further comprises a nose bridge inner shell portion, which is arranged on the inner side of the nose bridge of the outer shell portion.

6. The spectacle frame according to claim 5, characterized in that: A hole or a hole with a bottom is formed in the inner shell of the nose bridge and penetrates in the up-down direction.

7. The spectacle frame according to any one of claims 1 to 4, characterized in that: The inner shell part further includes a lens ring inner shell part, which is arranged on the inner side of the upper edge and the lower edge of the lens ring of the outer shell part.

8. The spectacle frame according to claim 7, characterized in that: A plurality of holes with bottoms are formed in the inner shell of the lens ring along the left-right direction.

9. The spectacle frame according to claim 8, characterized in that: The hole on the upper edge side of the inner shell of the lens ring has a bottom formed on the lower side. The hole on the lower edge side of the inner shell portion of the lens ring has a bottom formed on the upper side.

10. The spectacle frame according to any one of claims 1 to 9, characterized in that: The outer shell has a Shore hardness (A) of not less than 100 degrees and not more than 150 degrees.

11. The spectacle frame according to any one of claims 1 to 10, characterized in that: The inner shell portion has a Shore hardness (A) of 30 degrees or more and 70 degrees or less.

12. The spectacle frame according to any one of claims 1 to 11, characterized in that: The pile head includes a recessed portion that is recessed from the outside toward the inside.

Images