HK1138915B - Rimless glasses - Google Patents

Description

Frameless glasses

Technical Field

The present invention relates to rimless spectacles having no frame for holding the outer periphery of a lens.

Background

Conventionally, as such rimless eyeglasses, for example, one disclosed in patent document 1 is known.

Patent document 1 discloses rimless eyeglasses including a lens fixing member fixed to an eyeglass lens and a coupling member coupled to a temple or a bridge, wherein the lens fixing member and the coupling member are detachably coupled. In addition, as a fixing method of the eyeglass lens and the lens fixing member, a cylindrical leg portion of the lens fixing member formed of resin is inserted into a lens hole formed in the lens.

Patent document 2 describes rimless eyeglasses that hold a pair of left and right lenses by connecting them using a metal bridge and a metal pile, wherein the metal bridge has a parallel linear edge contact portion that can be brought into line contact with the inner edge of the lens and an inner insertion portion that can be inserted into a bridge fixing hole bored near the inner edge of the lens, and the metal pile has a parallel linear edge contact portion that can be brought into line contact with the outer edge of the lens and an outer insertion portion that can be inserted into a pile fixing hole bored near the outer edge of the lens.

Also, an adhesive is generally filled between such a lens hole and a member inserted therein.

However, in the conventional rimless spectacles, since the spectacle lens is fixed only by inserting the columnar leg portion of the lens fixing member into the lens hole formed in the spectacle lens, there is a problem that, for example, the spectacle lens and the lens fixing member are loosened during continuous long-term use.

In addition, in order to prevent such a backlash, a joint use of an adhesive may be considered, but in this case, although the problem of the backlash is improved, there is a problem that maintenance such as lens replacement becomes difficult. In particular, when both the eyeglass lens and the lens fixing portion are formed of plastic, it is difficult to separate the adhesive portion, and therefore, the eyeglass lens itself or the lens fixing portion itself has to be broken, which is a significant problem.

The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide rimless spectacles in which a connecting portion between a spectacle lens and a lens fixing portion does not become loose and the lens is easily attached and detached.

Patent document 1: japanese patent laid-open publication No. 2004-53689

Patent document 2: japanese registration Utility model No. 3007846

Disclosure of Invention

In order to achieve the above object, a rimless eyeglass according to an aspect of the present invention includes eyeglass lenses and an eyeglass member including lens fixing portions fixedly provided to the eyeglass lenses and a connecting portion connected to a temple or a bridge, wherein the rimless eyeglass is characterized in that: the lens fixing portion of the eyeglass component has a cylindrical leg portion, the leg portion is inserted into a lens hole formed in the eyeglass lens, and a spiral groove is formed in an outer peripheral surface of the leg portion.

According to the above configuration, the cylindrical leg portion of the lens fixing portion of the eyeglass component is inserted into the lens hole formed in the eyeglass lens, whereby the lens fixing portion of the eyeglass component is fixed to the eyeglass lens. In this case, since the spiral groove is formed on the outer peripheral surface of the leg portion, the inner peripheral surface of the lens hole and the outer peripheral surface of the leg portion are substantially uniformly in contact with each other, the connecting portion is not loosened, and the attachment and detachment of the eyeglass member and the lens are easy.

Here, the spiral groove may be a single groove or a plurality of grooves.

The plurality of grooves may be grooves having different winding directions.

Further, the lens fixing portion is preferably fixed to the spectacle lens by injecting an adhesive into the spiral groove and adhering the lens to the spectacle lens.

According to this configuration, since the adhesive can be reliably inserted into the spiral groove, the adhesive is spread over the entire connecting portion between the inner peripheral surface of the lens hole and the outer peripheral surface of the leg portion, and a reliable fixed state can be obtained. Thus, the leg portion can be prevented from coming off the lens hole, and no gap is formed therebetween.

Preferably, a flat surface having a width larger than the width of the groove is formed between the spiral grooves.

According to this configuration, since the contact between the inner peripheral surface of the lens hole and the outer peripheral surface of the leg portion is performed on the wide flat surface, the surface pressure on the eyeglass lens is reduced, and the eyeglass lens is less likely to be damaged. In addition, since the adhesive also functions as a cushion material, the occurrence of breakage can be further suppressed.

Further, it is preferable that the eyeglass lens is made of plastic, and the lens fixing portion is made of metal.

According to this configuration, since the adhesive force of the adhesive is generally weaker between heterogeneous materials than between homogeneous materials, the joint of the adhesive can be easily released without damaging the eyeglass lens by relatively rotating the eyeglass lens and the lens fixing member.

The eyeglass component may be a post head in which the connection portion is connected to a temple via a hinge, or may be a bridge made of one wire material including the lens fixing portion and the connection portion.

Drawings

Fig. 1 shows rimless spectacles according to a first embodiment of the present invention, in which (a) is a front view, (B) is a plan view, and (C) is a side view.

Fig. 2 shows a metal stud member as a spectacle member of rimless spectacles according to a first embodiment of the present invention, in which (a) is a front view, (B) is a plan view, and (C) is a side view.

Fig. 3 shows a metal bridge member as an eyeglass member of rimless eyeglasses according to a first embodiment of the present invention, wherein (a) is a front view, (B) is a plan view, and (C) is a side view.

Fig. 4 is an enlarged side view showing leg portions of a metal peg member and a metal bridge member as eyeglass members of rimless eyeglasses according to a first embodiment of the present invention, where (a) is a case where a single spiral groove is formed and (B) is a case where a plurality of spiral grooves are formed.

Fig. 5 is a side view showing a state in which a metal stud member as a spectacle member of rimless spectacles according to a first embodiment of the present invention is attached to a spectacle lens, where (a) is a state before coupling and (B) is a state after coupling.

Fig. 6 is a side view illustrating a case where an adhesive is injected into the spiral groove of the rimless spectacles according to the first embodiment of the present invention.

Fig. 7 is a sectional view showing a state in which the adhesive is filled in the spiral groove of the rimless spectacles according to the first embodiment of the present invention.

Fig. 8 is a front view showing a state where a metal pile member of rimless spectacles according to a first embodiment of the present invention is removed.

Fig. 9 shows rimless spectacles according to a second embodiment of the present invention, in which (a) is a front view, (B) is a plan view, and (C) is a side view.

Fig. 10 shows a metal stud member as a spectacle member of rimless spectacles according to a second embodiment of the present invention, in which (a) is a front view, (B) is a plan view, and (C) is a side view.

Description of the reference numerals

100U, 100S rimless glasses

110U, 110S glasses lens

112U, 112S lens hole

120U, 120S metal pile head (end-piece) parts

122U, 122S foot (leg portion)

124U, 124S wrist (arm port)

128 helical groove

129 flat surface

130 metal nose bridge component

132 foot

134 wrist part

138 helical groove

139 flat surface

160 hinge (hinge)

170 temples (temple)

Detailed Description

Embodiments of the present invention are described below with reference to the drawings. In the description of the present specification, expressions indicating directions such as "front and back", "right and left", "up and down" refer to directions in which the eyeglasses are worn by a person in a normal state.

In fig. 1(a) to (C), rimless eyeglasses 100U according to a first embodiment of the present invention include left and right plastic lenses 110U, left and right metal pile members 120U as eyeglass members fixedly attached to the lenses 110U, and a metal bridge member 130. As is clear from fig. 1(a) to (C), in the first embodiment, the bridge-side lens hole 112Uin and the stub-side lens hole 112Uup are formed in the lens 110U so as to be different in height between the vicinity of the inner edge and the vicinity of the upper edge. Where 112U is used in this first embodiment when it is not necessary to distinguish between the bridge side and the pile head side to refer to the lens aperture.

As shown in detail in fig. 2(a) to (C), the metal pile member 120U includes a leg portion 122U as a lens fixing portion fixedly provided to the lens and a wrist portion 124U as a connecting portion connected to the temple. In the present embodiment, a U-shaped bent portion 126U is provided between the leg portion 122U and the arm portion 124U of the metal pile member 120U, one of which is linearly continuous with the leg portion 122U, and the other of which is substantially continuous with the arm portion 124U via a straight corner portion. Further, the arm portion 124U is smoothly bent downward and rearward from the right-angled portion, and overlaps the upper edge portion of the lens 110U at a portion closer to the U-shaped bent portion 126U. The metal pile member 120U includes a leg portion 122U, a wrist portion 124U, and a U-shaped bent portion 126U, and is formed of a single metal wire, for example, a flexible elastic material such as nickel-chromium alloy or nickel-titanium alloy in the present embodiment. A single spiral groove 128 is formed on the outer peripheral surface of the cylindrical leg portion 122U. As shown in fig. 4(a) in an enlarged manner, the spiral grooves 128 form flat surfaces 129 having a width B larger than the width a of the grooves between the spiral grooves 128.

A substantially drum-shaped socket (socket) member 162 of a hinge 160 described later is provided at one end of the arm portion 124U of the metal pile member 120U. The temple 170 is connected by the hinge 160. The temple 170 may be integrally formed without the hinge 160.

On the other hand, as shown in detail in fig. 3(a) to (C), the metal bridge member 130 includes a leg portion 132 as a lens fixing portion to be fixed to a lens, and a wrist portion 134 as a coupling portion to be coupled to the bridge. In fig. 3(a) and (B), since the arm 134 and the leg 132 connected to the coupling section 137 described later have a pair-wise relationship, only one of them is denoted by a reference numeral, and the drawing is simplified.

In the present embodiment, the arm 134 of the metal bridge member 130 includes a U-shaped bent portion 135 and a rectangular bent portion 136 connected thereto, and the leg 132 is formed continuously in a straight line as an extension of one of the U-shaped bent portions 135. The ends of the right-angled bent portion 136 of the arm 134 are connected to each other by a coupling portion 137 which is a bridge. The metal bridge member 130 includes a leg portion 132, a wrist portion 134, and a connecting portion 137, and is similarly formed integrally with a single metal wire, for example, a flexible elastic material such as titanium alloy, nickel-chromium alloy, or nickel-titanium alloy. A nose pad mounting member 144 is joined to each of the wrist portions 134 of the metal bridge members 130 connected by the connecting portion 137, and includes a U-shaped bent portion 142 to which a nose pad, not shown, is mounted.

A single spiral groove 138 is formed in the outer peripheral surface of the columnar leg 132, similarly to the metal pile member 120U. Since the spiral groove 138 has the same form as the spiral groove 128 in the leg portion 122 of the metal pile member 120U, a flat surface 139 having a width B larger than the width a of the groove is formed between the spiral grooves 138 as shown by the reference numeral in fig. 4 (a).

The hinge 160 and the temple 170 will be briefly described with reference mainly to fig. 1(a) to (C) and fig. 5(a) and (B). In the present embodiment, the hinge 160 is formed by a combination of a large drum-shaped socket part 162 and a J-shaped bent part 172 formed at an end of the temple 170. Specifically, the socket member 162 has a through hole formed in the center thereof and a circumferential groove formed in a part of the outer periphery thereof. In the present embodiment, socket member 162 is formed integrally with metal pile member 120U such that the end of arm 124U of metal pile member 120U is joined to the outer periphery thereof.

The J-shaped bent portion 172 formed at the end of the temple 170 made of a metal wire (e.g., an elastic material such as titanium alloy, nickel-chromium alloy, nickel-titanium alloy) includes a first leg portion inserted through the through hole of the socket member 162 and a second leg portion continuous thereto, and when the first leg portion is inserted through the through hole, the socket member 162 is elastically held between the first leg portion and the second leg portion. Further, the second leg portion is bent at an acute angle with respect to the linear portion of the end portion of the temple 170, and the outer peripheral portion of the bent portion is formed to engage with the circumferential groove of the socket member 162.

In the first embodiment of the present invention, the rimless spectacles 100U are assembled by the following steps. First, the leg 132 of the metal bridge member 130 is inserted into the bridge-side lens hole 112Uin bored in the lens 110U from the rear side of the lens 110U, and the leg 122U of the metal pile member 120U is inserted into the pile-side lens hole 112Uup, whereby the metal bridge member 130 and the metal pile member 120U are fixed to the lens 110U. Fig. 5(a) representatively shows a state where metal pile member 120U is inserted. At this time, in the metal bridge member 130, the curvature of the U-shaped bent portion 135 and the penetration position of the lens hole 112Uin are determined by elastically sandwiching the lens hole 112Uin on the bridge side and the inner edge portion of the lens 110U by the leg portion 132 formed as one linear extension of the U-shaped bent portion 135 and the rectangular bent portion 136 connected to the other of the U-shaped bent portion 135. On the other hand, in the metal pile member 120U, the bending degree of the leg portion 124U and the penetration position of the lens hole 112Uup are determined by elastically sandwiching the lens hole 112Uup on the pile side and the upper edge portion of the lens 110U between the leg portion 122U and a portion of the leg portion 124U on the U-shaped bent portion 126U side overlapping the upper edge portion of the lens 110U (see fig. 1 a).

Here, as shown enlarged in fig. 4(a), spiral grooves 128 and 138 are formed in the outer peripheral surfaces of the leg portion 122U of the metal pile member 120U and the leg portion 132 of the metal bridge member 130, respectively, and flat surfaces 129 and 139 having a width B wider than the groove width a are formed between these grooves, so that the inner peripheral surface of the lens hole 112U is in substantially uniform contact with the outer peripheral surfaces of the leg portions 122U and 132. Therefore, the lens 110U, the metal pile member 120U, and the metal bridge member 130 are securely fixed to each other without loosening the connection portions therebetween. Then, the contact between the inner peripheral surface of the lens hole 112U and the outer peripheral surfaces of the leg portions 122U and 132 is performed on the wide flat surface, so that the surface pressure against the eyeglass lens 110U is reduced, and the breakage is less likely to occur.

In order to secure the fixed installation state, as shown in fig. 6, an adhesive may be injected into the spiral grooves 128 and 138. Specifically, the leg portions 122U and 132 are inserted into the lens hole 112U such that the front ends thereof slightly protrude from the front surface of the lens 110U, and the start or end of the spiral grooves 128 and 138 are exposed from the front surface of the lens 110U. Then, when the adhesive S is injected from the start or end of the exposed spiral grooves 128 and 138, the adhesive S easily enters the spiral grooves 128 and 138 as shown in fig. 7. Thus, the adhesive S spreads in the spiral grooves 128 and 138 of the leg portions 122U and 132, and a reliably fixed set state is obtained. In addition, since the adhesive S also functions as a cushion material, the occurrence of damage to the spectacle lens 110U can be further suppressed.

Then, as shown in fig. 5(a), finally, the temple 170 is coupled to the substantially drum-shaped socket member 162 integrally formed with the metal pile member 120U. Specifically, the first leg of the J-shaped bent portion 172 formed at the end of the temple 170 is inserted into the through hole of the socket part 162, and the bent portion of the second leg is engaged with the circumferential groove, so that the socket part 162 is elastically sandwiched between the first leg and the second leg. In this manner, the components are connected without using bolts or the like at all, thereby completing the rimless eyeglasses 100U.

The assembly steps described above may also be interchanged. For example, the metal pile part 120U may be attached, the temple 170 may be attached, and the metal bridge part 130 may be attached.

When the lens 110U needs to be replaced, the following procedure can be performed. That is, the metal pile part 120U and the metal bridge part 130 are held by hand at positions spaced apart from the leg parts 122U and 132 by a predetermined distance, and are rotated up and down about the leg parts 122U and 132 by a relative rotation of about 20 degrees, as shown in fig. 8(a) and (B). Thus, even when the metal pile member 120U and the metal bridge member 130 are filled with the adhesive in the spiral grooves 128 and 138, the adhesive entering the spiral grooves is ground off, and the metal pile member 120U and the metal bridge member 130 can be easily detached without using a special tool. In fig. 8(a) and (B), only the metal pile member 120U is shown to be removed, but it is obvious that the metal bridge member 130 can be similarly removed.

When the metal pile member 120U and the metal bridge member 130 are reused, the adhesive attached to the spiral grooves 128 and 138 may be removed by brushing, and the adhesive attached to the lens 110U may be removed by penetrating the drill again into the lens hole 112.

Next, rimless spectacles 100S according to a second embodiment of the present invention will be described. In the rimless spectacles 100S of the second embodiment, since only the shape of the metal stud member as the spectacle member of the rimless spectacles 100U of the first embodiment is different from the position where the lens hole is bored, the difference in shape will be described in the following description, and the description thereof will not be repeated.

That is, in fig. 9(a) to (C), the rimless spectacles 100S according to the second embodiment includes left and right plastic lenses 110S, and left and right metal pile members 120S and a metal bridge member 130 as spectacle members fixedly provided to the lenses 110S. In the second embodiment, as described with reference to fig. 9(a) to (C), the lens 110S is formed with the bridge-side lens hole 112Sin and the post-side lens hole 112Sout at substantially the same height positions in the vicinity of the inner edge and the outer edge. Where 112S is used in this second embodiment when it is not necessary to distinguish between the bridge side and the pile head side to refer to the lens aperture.

As shown in detail in fig. 10(a) to (C), the metal pile member 120S according to the second embodiment includes a leg portion 122S serving as a lens fixing portion fixed to a lens and a wrist portion 124S serving as a connecting portion connected to a temple. In the second embodiment, first U-shaped bent portion 125S and second U-shaped bent portion 126S are provided between leg portion 122S and arm portion 124S of metal pile member 120S. One of the first U-shaped bent portions 125S is linearly formed continuously with the leg portion 122S, and the other thereof also serves as one of the second U-shaped bent portions 126S. The other side of the second U-shaped bent portion 126S is formed continuously with the arm portion 124S. Further, the arm portion 124S is smoothly bent outward from a connection portion with the second U-shaped bent portion 126S. The metal pile member 120S includes a leg portion 122S, a first U-shaped bent portion 125S, a second U-shaped bent portion 126S, and a wrist portion 124S, and is formed of one metal wire in the present embodiment, for example, a flexible elastic material such as nickel-chromium alloy or nickel-titanium alloy. A spiral groove 128 is formed in the outer peripheral surface of the cylindrical leg portion 122S. As shown in fig. 4(a) in an enlarged scale, the spiral grooves 128 form flat surfaces 129 having a width B larger than the width a of the grooves between the spiral grooves 128, as in the first embodiment.

Further, a substantially drum-shaped socket part 162 of the hinge 160 is provided at one end of the arm part 124S of the metal pile member 120S, as in the first embodiment. Then, the temple 170 is coupled by the hinge 160. As described above, the temple 170 may be integrally formed without providing the hinge 160.

In the second embodiment, as in the first embodiment, the metal bridge member 130 is inserted into the bridge side lens hole 112Sin and fixed to the lens 110S at the leg portion 132 of the metal bridge member 130. On the other hand, in the metal pile element 120S, the degree of curvature of the first U-shaped curved portion 125S and the penetration position of the lens hole 112Sout are determined by elastically sandwiching the pile-side lens hole 112Sout and the outer edge portion of the lens 110S between the leg portion 122S and the second U-shaped curved portion 126S overlapping the outer edge portion of the lens 110S.

In the second embodiment, since spiral grooves 128 and 138 are formed in the outer peripheral surfaces of the leg portion 122S of the metal pile member 120S and the leg portion 132 of the metal bridge member 130, respectively, and flat surfaces 129 and 139 having a width B wider than the groove width a are formed between these grooves, the inner peripheral surface of the lens hole 112S and the outer peripheral surfaces of the leg portions 122S and 132 are substantially uniformly in contact, and the lens 110S, the metal pile member 120S, and the metal bridge member 130 are securely fixed without loosening the connecting portions thereof. Further, since the contact between the inner peripheral surface of the lens hole 112S and the outer peripheral surfaces of the leg portions 122S and 132 is performed on the wide flat surface, the surface pressure on the eyeglass lens 110S is reduced, and the breakage is less likely to occur.

In addition, the method of assembling and disassembling the rimless spectacles 100S of the second embodiment may be the same as that of the first embodiment, except that the suffix "U" of the reference numeral is changed to "S".

In the first and second embodiments, one spiral groove 128 and 138 is formed on the outer peripheral surface of the metal pile member 120U, 120S and the leg portion 122U, 122S and 132 of the metal bridge member 130, as shown in fig. 4(a) in an enlarged manner. However, the spiral grooves 128 and 138 may be a plurality of grooves as long as the flat surfaces 129 and 139 having the width B wider than the width a are secured between the grooves.

In the case of forming a plurality of grooves, although not shown, a plurality of grooves may be formed by making the winding directions different from each other for one spiral groove.

Here, fig. 4(B) shows an example of forming a plurality of spiral grooves in different winding directions from each other in an enlarged manner. In the example shown in fig. 4(B), three spiral grooves having different winding directions are formed in the columnar leg portion. Here, the suffix "R" is added to the dextrorotatory suffix, "L" is added to the levorotatory suffix, and the suffixes "1 to 3" are sequentially added to each suffix. For example, three right-handed helical grooves 128R1, 128R2, and 128R3 and three left-handed helical grooves 128L1, 128L2, and 128L3 are formed in the outer peripheral surface of the leg portion 122U of the metal pile element 120U. The same applies to the metal pile part 120S and the legs 122S and 132 of the metal bridge part 130.

As described above, when the plurality of grooves are formed such that the spiral groove winding directions are different from each other, the force for preventing the cylindrical leg portion from rotating in one direction acts when the grooves are formed by the jig, and therefore, the forming work is easy.

As is apparent from the above description, according to the above-described embodiment of the present invention, since the metal pile member 120S and the leg portion of the metal bridge member 130 can be directly inserted into the lens hole of the plastic eyeglass lens, a plastic member for cushioning or the like is not required, and a compact mounting structure can be provided. Further, since the lens hole is a simple circle and is a single hole, and an adhesive is used, the hole forming operation does not require high precision, and the hole can be easily processed in a retail store.

Claims (6)

1. Rimless spectacles comprising a plastic spectacle lens and a metal spectacle member, wherein the spectacle member comprises a lens fixing portion fixedly provided to the spectacle lens and a coupling portion coupled to a temple or a bridge, and the rimless spectacles are characterized in that:

the lens fixing part of the eyeglass component has a cylindrical leg part, the leg part is inserted into a lens hole penetrating through the eyeglass lens, a spiral groove is formed on the outer peripheral surface of the leg part,

a flat surface having a width larger than that of the groove is formed between the spiral grooves,

when the cylindrical leg portion of the lens fixing portion is inserted into the lens hole, a start end or a finish end of the spiral groove is exposed from a front surface of the eyeglass lens, and an adhesive is injected into the spiral groove from the start end or the finish end of the exposed spiral groove.

2. The rimless eyewear of claim 1 wherein:

the helical groove is a single groove.

3. The rimless eyewear of claim 1 wherein:

the helical groove is a plurality of grooves.

4. The rimless eyewear of claim 3 wherein:

the plurality of grooves are grooves having different winding directions from each other.

5. The rimless eyewear of any of claims 1-4 wherein:

the eyeglass component is a pile head of which the connecting part is connected with the eyeglass leg through a hinge.

6. The rimless eyewear of any of claims 1-4 wherein:

the eyeglass component is a bridge formed of one wire rod including the lens fixing portion and the connecting portion.