JP2023102915A - Spectacles and hinge structure of the same - Google Patents

Abstract

To provide spectacles having a hinge structure which is less likely to be loosened even when being repeatedly opened/closed.SOLUTION: Spectacles have an armor member which is connected to the outside end of a pair of right and left lenses and is composed of a metallic wire rod, and a temple member which is rotatably connected to the armor member through a hinge structure and is composed of a metallic wire rod, wherein the hinge structure has a body part having a hole formed on a side peripheral surface, a shaft core member which has a diameter larger than that of the body part and has a head having a screw hole in an axial direction on the top face, a body part screwed with the screw hole of the shaft core member, a screw member having a head having a diameter larger than that of the body part, two line ends that the armor member has, and one wire end that the temple member has, the one wire end of the armor member is inserted into the hole of the shaft core member, the other wire end is sandwiched between the top face of the head of the shaft core member and the seating surface of the head of the screw member, the screw member is coupled to the shaft core member, the two wire ends are fixed, and the wire end of the temple member is wound around a region closer to the head side than the hole on the side peripheral face of the body part of the shaft core member.SELECTED DRAWING: Figure 1

Description

The present invention relates to spectacles and their hinge structure.

2. Description of the Related Art Conventionally, as a hinge structure for rotatably connecting an endpiece member and a temple member in spectacles, the structure disclosed in Patent Document 1 is known. In this hinge structure, a temple member having an insertion hole is inserted between two sockets formed at the ends of the end pieces of the end pieces, and the temple members are tightened with screws so that the end pieces and the temple members can rotate.

JP 2008-164646 A

By the way, the conventional hinge structure as described above has a structure in which the temple member and the endpiece member are fixed by screwing them from above and below at the connecting portion, so there is a problem that the screw gradually loosens as the temple member is repeatedly opened and closed, resulting in a decrease in wearing comfort.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a main object of the present invention is to provide spectacles having a novel hinge structure that does not easily loosen even after repeated opening and closing.

That is, the spectacles according to the present invention comprise a pair of left and right lenses, an endpiece member made of a metal wire connected to the outer end of each lens, and a temple member made of a metal wire connected to the end pieces rotatably via a hinge structure. A screw member having a body portion to be screwed together and a head portion larger in diameter than the body portion, two wire end portions of the endpiece member, and one wire end portion of the temple member, wherein one wire end portion of the end piece member is inserted into the hole of the shaft core member, and the other wire end portion is sandwiched between the top surface of the head portion of the shaft core member and the seat surface of the head portion of the screw member, and the two wire end portions are fixed by fastening the screw member to the shaft core member. and a wire end portion of the temple member is wound around a region of the side peripheral surface of the trunk portion of the shaft core member closer to the head than the hole.

With such a configuration, the screw member is used only to fix the wire end of the endpiece member to the shaft core member, and the wire end of the temple member wound around the body of the shaft core member is not subjected to any tightening stress of the screw member. Therefore, it is possible to prevent loosening of the hinge structure due to repeated opening and closing of the temple member.

Further, it is preferable that the spectacles have a spiral groove formed in the side peripheral surface of the trunk portion of the shaft core member, and the wire end portion of the temple member is wound so as to be screwed into the spiral groove.
With such a configuration, by screwing the wire ends of the temple members into the spiral grooves, moderate friction is provided between the shaft core member and the temple members, and the temple members can be prevented from flapping open and closed without permission.

Further, when the eyeglasses are opened from a folded state by rotating the temple members, it is preferable that the wire ends of the temple members rotate along the spiral grooves of the shaft core member, thereby moving along the axial direction of the eyeglasses and coming into contact with the head of the shaft core member or the wire ends of the end pieces inserted into the holes, thereby restricting the rotational movement of the temple members and bringing the temple members into a fully opened state.
With such a configuration, when the temple member is fully opened, the head portion of the shaft core member or the wire end portion of the endpiece member and the spiral groove can apply a fastening force to the distal end portion of the temple member from above and below, so that the temple member can be firmly fixed in the fully opened state.

In order to prevent the temple member from opening excessively beyond the assumed fully open state, it is preferable that the other wire end portion of the end piece member has a protruding portion that protrudes from between the top surface of the head portion of the shaft core member and the bearing surface of the head portion of the screw member, and that the wire end portion of the temple member and the protruding portion of the wire end portion of the end piece member contact and interfere with each other when the temple member is in the fully open state.

Further, in the spectacles, the hole is formed in the side peripheral surface of the body portion of the shaft core member so as to face inward in the left-right direction, and the direction of the spiral groove formed in the side peripheral surface of the body portion is preferably the same as the direction of the thread groove of the screw hole formed in the head.
With this configuration, one wire end of the connection member can be inserted into the hole in the side peripheral surface of the body from the inside in the left-right direction, so that the rotation of the shaft core member when folding the temple member can be restricted. On the other hand, by making the direction of the spiral grooves formed on the side peripheral surface of the body and the direction of the screw grooves of the screw holes formed in the head the same, it is possible to restrict the rotation of the shaft member in the direction in which the screw member loosens when the temple member is opened.

As a specific configuration of the spectacles, it is preferable that the right hinge structure and the left hinge structure have the spiral grooves formed in the axial member opposite to each other.
In this way, the wire ends of both the right and left temple members can be brought into contact with the head of the shaft core member or the wire end of the endpiece member in the same way when the temple is fully opened, so that the right and left temple members can be fixed with approximately the same amount of force in the fully opened state, and the feeling of wearing can be further improved.

The eyeglasses are preferably formed so that the fitting tolerance between the spiral groove of the shaft core member and the wire end portion of the temple member screwed therewith is preferably 8 μm or less, more preferably 6 μm or less, even more preferably 3 μm or less, and even more preferably 1 μm or less. Further, it is more preferable that the surface of the spiral groove is subjected to a solid lubrication treatment.
In this way, galling between the wire ends of the temple members and the spiral grooves can be suppressed, so that the temple members can be smoothly opened and closed, and the spiral grooves can be prevented from being damaged when the temple members are opened and closed.

In the spectacles, it is preferable that the other wire end portion of the endpiece member is formed in a ring shape surrounding the screw hole of the shaft core member between the top surface of the head portion of the shaft core member and the bearing surface of the head portion of the screw member.
By doing so, it is possible to increase the contact area between the top surface of the head of the shaft core member, the bearing surface of the head of the screw member, and the wire end portion of the end piece member, so that they can be firmly sandwiched and fixed.

Moreover, as a mode in which the effects of the present invention are exhibited remarkably, it is preferable that the spectacles are of a rimless type.

According to the present invention configured in this way, it is possible to provide spectacles having a novel hinge structure that does not easily loosen even after repeated opening and closing.

The perspective view which shows the whole structure of the spectacles of one Embodiment. The top view which looked the whole spectacles of the same embodiment from upper direction. The top view which looked the whole spectacles of the same embodiment from the left direction. The top view which looked the whole spectacles of the same embodiment from back. The perspective view which shows the structure of the bridge|bridging member of the same embodiment. The top view which looked the bridge|bridging member vicinity of the same embodiment from upper direction. The top view which looked the bridge|bridging member of the same embodiment from the left direction. The top view which looked at the structure of the hinge structure vicinity of the temple member of the left side of the same embodiment from upper direction. The top view which looked at the structure of the hinge structure vicinity of the left temple member of the same embodiment from the left direction. The top view which looked the hinge structure of the right side of the same embodiment from the left direction, and shows it. The top view which decompose|disassembles and shows the hinge structure of the right side of the same embodiment. The perspective view which shows the structure of the shaft core member of the hinge structure of the same embodiment. The top view explaining operation|movement of the hinge structure of the right side of the same embodiment.

<Overall composition>
An embodiment of spectacles 100 according to the present invention will be described below with reference to the drawings.

The spectacles 100 of this embodiment are of a so-called rimless type (two-point type) that does not have a rim that supports the outer periphery of the lens 1 . Specifically, as shown in FIGS. 1 to 4, the spectacles 100 include a pair of left and right lenses 1, a bridge member 2 connecting the pair of lenses 1, a pair of left and right end pieces 3 provided at the outer end of each lens 1, a pair of temple members 4 extending in the front-rear direction from each end piece 3 to hold the temporal region of the wearer's head, and a pair of hinge structures 5 rotatably connecting the end piece members 3 and each temple member 4.

In this spectacle 100, the bridge member 2, the end piece member 3, and the temple member 4 are all made of metal wire. Specifically, each of the bridge member 2, the end piece member 3, and the temple member 4 is formed by bending a single wire rod at a plurality of locations. The wires forming the bridge member 2, the end pieces 3, and the temple members 4 are made of the same metal material, for example, pure titanium or a titanium alloy, but not limited to this. The bridge member 2, the end pieces 3, and the temple members 4 may be made of wires made of different metal materials.

(1) Lens 1
The type and shape of the lens 1 of the spectacles 100 of the present embodiment are not particularly limited and may be arbitrary. The lens 1 may be, for example, a focal lens, a progressive lens such as a bifocal lens, a medium-near lens, or a near-near lens, or may be a spherical lens, an aspherical lens, or a double-sided aspherical lens. The material of the lens 1 may be plastic or glass, and its surface may be subjected to various coating processes (for example, UV cut, anti-scratch, anti-reflection, etc.).

A connection hole for connecting the bridge member 2 and the endpiece member 3 is formed through each lens 1 in its thickness direction. Specifically, a bridge connection hole 11 for connecting the bridge member 2 is formed near the inner (bridge side) end of each lens 1, and an end piece connection hole 12 for connecting the endpiece member 3 is formed near the outer (endpiece side) end of each lens 1.

(2) Bridge member 2
The bridge member 2 is formed from a single wire, and is formed by bending the wire at a plurality of locations (about 20 locations in this case) along the longitudinal direction of the wire. As shown in FIGS. 5 to 7, the bridge member 2 has a bridge portion 21 provided in the center and bridged between the left and right lenses 1, a lens connection portion 22 for connecting the bridge portion 21 to each lens 1, and a nose pad holding portion 23 for holding the nose pad 6 (clings).

The bridge portion 21 has at its center an arch portion 21a forming an arch shape that protrudes forward. The arch portion 21a has a bilaterally symmetrical shape formed by bending the wire rod at a plurality of locations with substantially constant intervals along the longitudinal direction. By forming the arch portion 21a by bending at a plurality of locations in this manner, the strength of the bridge portion 21 can be improved by work hardening. From the viewpoint of improving the strength of the bridge portion 21, the shorter the bending interval in the arch portion 21a, the better. Both end portions of the arch portion 21a along the longitudinal direction of the wire are formed to be bent forward through a bending point 21b by performing a bending process. By bending both ends of the arch portion 21a in this way, the deformation strength of the bridge portion 21 can be further improved.

The lens connecting portions 22 are formed at both ends of the bridge portion 21 . The lens connecting portion 22 is formed by bending a wire so as to have a hairpin shape projecting forward. A front end portion 22a of the lens connection portion 22 protruding forward is inserted into and held in a bridge connection hole 11 formed in the lens 1, whereby the bridge member 2 and each lens 1 are connected. The tip 22a of the lens connection portion 22 inserted into the bridge connection hole 11 may be adhered to the lens 1 using an adhesive or the like.

The nose pad holding portions 23 are formed at both ends along the longitudinal direction of the wire of the bridge member 2 . Specifically, the nose pad holding portion 23 has a ring shape formed by bending both ends of a wire, and the nose pad 6 is inserted and held in this ring-shaped portion.

(3) End piece 3
The end piece member 3 is formed from a single wire, and is formed by bending the wire at a plurality of locations (here, about 10 locations) along the longitudinal direction of the wire. As shown in FIGS. 8 to 10, the endpiece member 3 has a lens connecting portion 31 formed in a hairpin shape protruding forward. As with the bridge member 2 , the end piece 3 of the endpiece member 3 is held by inserting the front end portion of the lens connecting portion 31 protruding forward into the end piece connection hole 12 formed in the lens 1 . Both ends (two wire ends 53 and 54 ) of the wire constituting the end piece member 3 extend rearward from the lens connecting portion 31 and are connected to the temple member 4 via the hinge structure 5 .

(4) Temple member 4
Next, the structure of the temple member 4 will be described with reference to FIGS. 2 to 4, 8 and 9. FIG. The temple member 4 is formed from a single wire, and is formed by bending the wire at a plurality of locations (here, about 40 locations) along the longitudinal direction of the wire and partially applying roller processing along the longitudinal direction. The base end 4a of the temple member 4 is connected to the endpiece member 3 via a hinge structure 5, and is configured to open and close by rotating about the hinge structure 5 in a plane perpendicular to the vertical direction. When the temple member 4 is opened, the temple member 4 extends rearward from the base end portion 4a and has a shape in which the tip portion 4b comes into contact with the temporal region behind the ear of the wearer. Hereinafter, the shape of the temple member 4 when the spectacles 100 are opened will be described in order from the proximal side to the distal side.

A proximal line end portion 41 of the temple member 4 connected to the hinge structure 5 has a substantially U shape extending outward in the lateral direction after protruding inward in the lateral direction from the hinge structure 5 when viewed from the vertical direction. This wire end portion 41 extends outside the hinge structure 5 and is connected to a forward projecting portion 42 described below.

A forward projecting portion 42 that is bent to project forward is formed on the distal end side of the base end side wire end portion 41 of the temple member 4 . The forward protruding part 42 is formed by bending a wire so as to form a hairpin shape when viewed from the left and right direction, and after extending forward, it is bent and extended rearward.

The forward projecting portion 42 is formed in the vicinity of the hinge structure 5, and specifically, is formed so as to be positioned outside the hinge structure 5 in the left-right direction. Further, here, the forward protruding portion 42 is formed so as not to protrude forward beyond the hinge structure 5, and the protruding end 42a of the forward protruding portion 42 is formed at the same position as the axis center of the hinge structure 5 in the front-rear direction.

A first stepped bent portion 43 that is bent in a stepped manner so as to be displaced in the horizontal direction when viewed in the vertical direction and a second stepped bent portion 44 that is bent in a stepped manner so as to be displaced in the vertical direction when viewed in the horizontal direction are formed on the distal end side of the forward projecting portion 42 in the temple member 4.

The first step-bent portion 43 is formed by bending a wire a plurality of times (here, twice) (also referred to as step-bending or Z-bending) as viewed from above. A first bend point 431 and a second bend point 432 are provided in this order from the base end side of the temple member 4 toward the tip end side of the temple member 4 . The wire rod extending rearward from the front projecting portion 42 bends outward in the left-right direction (here, obliquely outward in the rear direction) at the first bending point 431, and then bends rearward at the second bending point 432. It can also be said that the wire rod is offset outward in the left-right direction at the first stepped bent portion 43 . Also, the first step bent portion 43 is formed outside the hinge structure 5 in the left-right direction, and more specifically, both the first bending point 431 and the second bending point 432 are formed outside the hinge structure 5.

The second step-bent portion 44 is formed by bending a wire a plurality of times (here, twice) (also referred to as step-bending or Z-bending) when viewed from the left-right direction. A third bending point 441 and a fourth bending point 442 are provided in this second stepped bent portion 44 in order from the base end side to the distal end side of the temple member 4 . The wire extending rearward (specifically, obliquely downward rearward) from the forward protruding portion 42 is bent upward (here, obliquely upward rearward) at a third bending point 441, and then bent rearward at a fourth bending point 442. It can also be said that the wire rod is offset upward at the second stepped bent portion 44 . Here, the position of the fourth bending point 442 is set so as not to exceed the hinge structure 5 in the vertical direction.

Here, the first stepped bending portion 43 and the second stepped bending portion 44 are formed in a common wire portion of the wire constituting the temple member 4, and are formed so that the third bending point 441 and the fourth bending point 442 are positioned between the first bending point 431 and the second bending point 432. That is, the wire material constituting the temple member 4 is formed so as to be vertically displaced by the second stepped bending portion 44 while being displaced outwardly at the first stepped bending portion 43 .

An inward curved portion 45 that curves inward in the left-right direction is formed on the tip side of the first stepped bent portion 43 and the second stepped bent portion 44 in the temple member 4 . The inward curved portion 45 is formed by subjecting a wire to roll bending (feed bending) so as to gently curve inward with a constant radius of curvature to fit the shape of the wearer's temporal region.

Further, on the tip side of the inward curved portion 45 of the temple member 4, a hold portion 46 is formed to sandwich and hold the wearer's temporal region behind the ears from the left and right. The holding portion 46 is formed by bending so that the tip of the temple member 4 faces downward when viewed from the front-rear direction.

Specifically, the hold portion 46 has a curved portion 461 that is bent inwardly downward from the end of the inwardly curved portion 45 to draw an arc, and then a straight portion 462 that extends straight to the tip of the temple member 4. The curved portion 461 is formed by bending the wire at a plurality of locations along the longitudinal direction. Here, the curved portion 461 is formed by bending the wire rod at 28 points at substantially constant intervals (for example, 0.5 mm or more and 2 mm or less, preferably about 1 mm).

(5) Hinge structure 5
10 to 12, the hinge structure 5 includes a shaft member 51 having a body portion 511 having a hole 51h (also referred to as a wire locking hole 51h) formed in a side peripheral surface 51c, a head portion 512 having a larger diameter than the body portion 511 and having a screw hole 51s along the axial direction formed on the top surface 51a thereof, a body portion 521 screwed into the screw hole 51s of the shaft core member 51, and the body portion 521. It comprises a screw member 52 having a head 522 having a diameter larger than that of the portion 521, two wire ends 53 and 54 possessed by the endpiece member 3, and one wire end 55 possessed by the temple member 4 (base end side wire end 41). In this hinge structure 5, one wire end portion 53 of the end piece member 3 is inserted into the wire locking hole 51h of the shaft core member 51, and the other wire end portion 54 is sandwiched between the top surface 51a of the head portion 512 of the shaft core member 51 and the seat surface 52a of the head portion 522 of the screw member 52, and the two wire ends 53 and 54 are fixed by fastening the screw member 52 to the shaft core member 51. The wire end portion 55 of the temple member 4 is wound around a region (also referred to as a winding region 51r) set on the head 512 side (upper side) of the wire locking hole 51h on the side peripheral surface 51c of the body portion 511 of the shaft core member 51, thereby allowing the temple member 4 to be opened and closed with the shaft core member 51 as the axis center.

The wire engaging hole 51h is a blind hole (non-through hole) formed in the side peripheral surface 51c of the body portion 511 along a direction orthogonal to the axial direction of the shaft core member 51, and has a hole diameter to the extent that the wire constituting the end piece member 3 can be fitted without rattling. More specifically, the wire locking hole 51h is formed in the trunk portion 511 of the shaft core member 51 so as to open inward in the left-right direction. As a result, one wire end portion 53 of the connection member 3 is inserted into the wire locking hole 51h from the inside in the left-right direction, so that the rotation of the shaft core member 51 when folding the temple member 4 can be restricted.

The other wire end portion 54 of the end piece member 3 has a ring-shaped portion formed between the top surface 51a of the shaft core member 51 and the bearing surface 52a of the screw member 52 so as to form a ring shape surrounding the screw hole 51s of the shaft core member 51. This annular portion is sandwiched and fixed between the top surface 51a of the shaft core member 51 and the seat surface 52a of the screw member 52 so that its center position coincides with the center position of the screw hole 51s.

A winding region 51r of the trunk portion 511 of the shaft core member 51 is formed with a spiral groove 51g that spirally surrounds the side peripheral surface 51c. A wire end portion 55 of the temple member 4 is formed in a spiral shape and is wound so as to be screwed into a spiral groove 51g formed in the body portion 511 . Therefore, when the temple member 4 is opened and closed, the wire end portion 55 of the temple member 4 rotates along the spiral groove 51g of the shaft core member 51, thereby moving up and down along the axial direction. In the spectacles 100 of the present embodiment, the right hinge structure 5 and the left hinge structure 5 have spiral grooves 51g formed in the axial member 51 that are opposite to each other, and when the left and right temple members 4 are opened and closed, they move up and down in the same direction. In this embodiment, the shaft member 51 is provided so that its head portion 512 faces upward.

Further, in this shaft core member 51, the direction of the spiral groove 51g formed in the side peripheral surface 51c of the body portion 511 and the direction of the screw groove 51s formed in the head portion 512 are made to be the same, so that when the temple member 4 is opened, the rotation of the shaft core member 51 in the loosening direction with respect to the screw member 52 can be restricted.

Furthermore, the spiral groove 51g of the shaft core member 51 is formed so that the fitting tolerance with the wire end portion 55 of the temple member 4 screwed thereto is preferably 8 μm or less, more preferably 6 μm or less, still more preferably 3 μm or less, further preferably 1 μm or less, and the surface of the spiral groove 51 g is subjected to solid lubrication treatment.

In this hinge structure 5, when the temple member 4 is rotated and opened from the folded state, the wire end portion 55 of the temple member 4 moves upward, and finally comes into contact with the seat surface 51b of the head portion 512 of the shaft core member 51, thereby restricting the rotational movement of the temple member 4 and bringing it into a fully opened state. That is, the wire end portion 55 of the temple member 4 contacts the bearing surface 51b of the head portion 512 of the shaft core member 51 only in the fully open state. Further, the wire end portion 55 of the temple member 4 formed in a spiral shape contacts only the side peripheral surface 51c of the trunk portion 511 of the shaft core member 51 from the folded state to the fully opened state, and is configured so as not to contact other elements (specifically, the wire ends 53 and 54 of the joint member 3 and the head portion 512 of the shaft core member 51).

Also, in this hinge structure 5, the other wire end portion 54 of the end piece member 3 has a protruding portion 54a that protrudes outward from between the top surface 51a of the shaft core member 51 and the seat surface 52a of the screw member 52. As shown in FIG.

<Effects of this embodiment>
According to the spectacles 100 of this embodiment configured in this manner, the screw member 52 is used only to fix the wire end portion of the endpiece member 3 to the shaft core member 51, and the wire end portion 55 of the temple member 4 wound around the body portion 511 of the shaft core member 51 is configured so that no tightening stress of the screw member 52 is applied.

Further, by screwing the wire end part 55 of the temple member 4 into the spiral groove 51g, moderate friction is provided between the shaft core member 51 and the temple member 4, and the temple member 4 can be prevented from opening and closing arbitrarily. Moreover, when the temple member 4 is fully opened, the head 512 of the shaft core member 51 and the spiral groove 51g can apply fastening force to the distal end portion 4b of the temple member 4 from above and below, so that the temple member 4 can be firmly fixed in the fully opened state.

Furthermore, since one wire end portion 53 of the end piece member 3 can be inserted into the hole in the side peripheral surface 51c of the body portion 511 from the inside in the left-right direction, the rotation of the shaft core member 51 when folding the temple member 4 can be restricted. On the other hand, by making the direction of the spiral groove 51g formed in the side peripheral surface 51c of the body portion 511 and the direction of the thread groove of the screw hole 51s formed in the head portion 512 the same, it is possible to restrict the rotation of the shaft core member 51 in the loosening direction with respect to the screw member 52 when the temple member 4 is opened.

<Other embodiments>
It should be noted that the present invention is not limited to the above embodiments.

For example, in the hinge structure 5 of the above-described embodiment, when the temple member 4 is opened from the folded state, the wire end 55 comes into contact with the bearing surface 51b of the head 512 of the shaft core member 51, thereby restricting the rotational movement thereof. However, this is not restrictive. In another embodiment, when the temple member 4 is opened, the wire end portion 55 thereof may move downward and come into contact with one wire end portion 53 of the end piece member 3 inserted into the wire locking hole 51h, thereby restricting its rotational movement.

Further, in the hinge structure 5 of another embodiment, the shaft core member 51 may be provided so that its head portion 512 faces downward. In addition, in the hinge structure 5 of another embodiment, the body portion 511 of the shaft core member 51 may not have the spiral groove 51g.

In the hinge structure 5 of another embodiment, the other wire end portion 54 of the end piece member 3 does not have the protruding portion 54a, so that the wire end portion 55 of the temple member 4 and the wire end portion 54 of the end piece member 3 do not interfere with each other in the fully open state.

Also, the spectacles 100 of the above embodiment are of the so-called rimless type, but the spectacles are not limited to this. The spectacles 100 of other embodiments may be of a type having a rim. Further, the spectacles 100 of the above embodiment are not limited to those aimed at correcting the vision of the wearer, and may be sunglasses aimed at protecting the eyes from ultraviolet rays.

In addition, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications are possible without departing from the spirit of the present invention.

REFERENCE SIGNS LIST 100...Glasses 1...Lens 3...Endpiece member 4...Temple member 5...Hinge structure 51...Axial member 511...Body part 512...Head part 51h...Hole (wire locking hole)
51s...Screw hole 52...Screw member 521...Body part 522...Head part 53...One wire end (joint)
54 ・・・ the other wire end (endpiece)
55 ... wire end (temple)

Claims (10)

A pair of left and right lenses,
an end piece member made of a metal wire connected to the outer end of each lens;
a temple member made of a metal wire rotatably connected to the endpiece member via a hinge structure,
The hinge structure is
an axial core member having a body portion with a hole formed in a side peripheral surface thereof, and a head portion having a larger diameter than the body portion and having a screw hole along the axial direction formed on the top surface thereof;
a screw member having a body portion to be screwed into the screw hole of the shaft member and a head portion having a larger diameter than the body portion;
two wire end portions of the end piece member;
and one wire end portion of the temple member,
One wire end portion of the end piece member is inserted into the hole of the shaft member, and the other wire end portion is sandwiched between the top surface of the head portion of the shaft core member and the bearing surface of the head portion of the screw member, and the two wire ends are fixed by fastening the screw member to the shaft core member,
A pair of spectacles, wherein the wire ends of the temple members are wound around a region of the side peripheral surface of the body portion of the shaft core member that is closer to the head than the hole. 2. The pair of spectacles according to claim 1, wherein a spiral groove is formed on the side peripheral surface of the trunk portion of the shaft core member, and the wire ends of the temple member are wound so as to be screwed into the spiral groove. 3. The pair of spectacles according to claim 2, wherein when the temple members are rotated and opened from a folded state, the wire ends of the temple members rotate along the spiral grooves of the shaft core member to move in the axial direction, and contact the head portion of the shaft core member or the wire ends of the endpiece members inserted into the holes, thereby restricting the rotational movement of the temple members and opening them fully. the other wire end portion of the end piece member has a protruding portion protruding from between the top surface of the head portion of the shaft core member and the bearing surface of the head portion of the screw member;
4. The spectacles according to claim 3, wherein when the temple members are fully open, the wire ends of the temple members and the protruding portions of the wire ends of the end pieces contact and interfere with each other. The hole is formed in the side peripheral surface of the body portion of the shaft core member so as to face inward in the left-right direction,
The spectacles according to any one of claims 2 to 4, wherein the direction of the spiral groove formed on the side peripheral surface of the body and the direction of the screw groove of the screw hole formed on the head are the same. The spectacles according to any one of claims 2 to 5, wherein the hinge structure on the right side and the hinge structure on the left side have the spiral grooves formed in the shaft core members in opposite directions. The spectacles according to any one of claims 2 to 6, wherein the surfaces of the spiral grooves are subjected to solid lubrication treatment. The spectacles according to any one of claims 1 to 7, wherein the other wire end portion of the end piece member is formed in a ring shape surrounding the screw hole of the shaft core member between the top surface of the head portion of the shaft member and the bearing surface of the head portion of the screw member. The spectacles according to any one of claims 1 to 8, which are of a rimless type. Spectacles comprising a pair of left and right lenses, an end piece member made of a metal wire connected to the outer end of each lens, and a temple member made of a metal wire connected to the end piece member, wherein the hinge structure rotatably connects the end piece member and the temple member,
an axial core member having a body portion with a hole formed in a side peripheral surface thereof, and a head portion having a larger diameter than the body portion and having a screw hole along the axial direction formed on the top surface thereof;
a screw member having a body portion to be screwed into the screw hole of the shaft member and a head portion having a larger diameter than the body portion;
two wire end portions of the end piece member;
and one wire end portion of the temple member,
One wire end portion of the end piece member is inserted into the hole of the shaft member, and the other wire end portion is sandwiched between the top surface of the head portion of the shaft core member and the bearing surface of the head portion of the screw member, and the two wire ends are fixed by fastening the screw member to the shaft core member,
A hinge structure in which a wire end portion of the temple member is wound around a region of the side peripheral surface of the trunk portion of the shaft member that is closer to the head than the hole.