JP7313647B2 - Fittings for eyeglasses or accessories - Google Patents

Description

The present invention relates to a bendable joint used for accessories such as spectacles, bangles, necklaces, etc., and relates to a boltless and hingeless joint that utilizes biasing means such as springs and rubbers and magnetically attracted bodies such as magnets.

For example, in spectacles, a front portion holding a lens and left and right temples are connected by hinges so that the left and right temples can be freely folded with respect to the front portion.
Various types of hinges for spectacles have been proposed or are commercially available, such as spring hinges that bias the head of the spectacle wearer from the left and right to prevent the spectacles from slipping down, temples that can be attached to and detached from the front portion at the hinges so that the temples can be replaced with temples of a different design, and boltless or hingeless hinges because the bolts that make up the hinges are easily loosened.

In the hingeless spectacle frames described in Patent Document 1 and Patent Document 2, the left and right temples and the front frame are connected by spring members, and elastic deformation of the spring members enables the temples to expand from a closed state to an open state. In the spectacle frames described in these documents, the spring material also functions as a spring hinge.
In recent years, magnets with strong magnetic attraction such as neodymium magnets have been sold at low prices, and the application of such magnets to spring hinges, boltless hinges, etc. is also expanding (see Patent Documents 3 to 6).
For example, Patent Document 3 discloses a spring hinge that utilizes the repulsive force of a magnet provided on the fixed side of the hinge and a magnet provided on the movable side. Further, Patent Documents 4 and 3 disclose boltless hinges that use magnets instead of bolts. Furthermore, Patent Document 4 discloses hingeless spectacles in which the front portion and temples are connected by magnets instead of hinges.

JP-A-2002-350784 JP-A-2001-255497 JP-A-11-119166 JP 2016-4263 A International publication 2009/113187

However, in the hingeless spectacles disclosed in Patent Document 1, if a bending force exceeding the elastic limit of the spring member acts on the spring member, the spring portion and the temple may be plastically deformed or damaged. In addition, a large stress acts on the plate-like spring material in the folded state, and the elasticity of the spring material deteriorates during long-term use, so that when the temple is opened, it will not return to a predetermined initial shape, and the elastic force as a spring hinge will be weakened.

In addition, the spring hinge described in Patent Document 2 has the problem that it is difficult to obtain sufficient elastic force for clamping because it clamps the head of the spectacle wearer from the left and right only by the repulsive force of the magnet. Furthermore, in the boltless hinge described in Patent Document 3, the front part and the temple are connected by the magnetic attraction force of the magnet, but the magnetic attraction force of the magnet alone does not provide a strong connection force, so there is a problem that a separate holding member 22 as shown in FIG. 4 is required. The boltless hinge described in Patent Document 4 does not have the problem of the hinge of Patent Document 4, but it has a problem that the structure is complicated and the processing cost is high.
Furthermore, the hingeless spectacles disclosed in Patent Document 5 have the problem that the temples are easily detached because the front part and the temples are connected only by the magnetic attraction force of the magnet.

An object of the present invention is to provide a joint that solves the above-described problems of conventional hinges at once, shares the functions of hingeless, boltless, and spring hinges, allows replacement of parts such as temples, and is applicable not only to eyeglasses but also to accessories such as bangles and necklaces.

上記課題を解決するために請求項１に記載の眼鏡又はアクセサリの継手は、眼鏡の屈曲部分に設けられるか又はバングル及びネックレスを含むアクセサリの開閉部を開閉するように設けられる屈曲自在な継手において、軸線方向に端部を突き合わせ、突き合わせた前記端部で軸線に対して交叉する方向に屈曲自在に接合される第一の部材及び第二の部材と、この第一の部材及び第二の部材のそれぞれの前記端部の少なくとも一部に形成され、前記第一の部材と前記第二の部材を突き合わせて前記端部どうしを二次元的又は三次元的に接触させることで、前記端部どうしが互いに係合して前記第一の部材と前記第二の部材とを初期形態に維持する接触部と、前記第一の部材及び前記第二の部材の前記接触部を、常時突き合わせる方向に付勢し、前記第一の部材及び第二の部材の軸線方向に離間又は軸線と交叉する方向に屈曲する可動領域を制限する付勢手段と、を有し、前記第一の部材、前記第二の部材及び前記付勢手段を一つにまとめてユニット化し、前記眼鏡の屈曲部分又は前記アクセサリの開閉部に対して着脱できるようにした構成としてある。 The biasing means may not only limit the movable area, but also bias the contact portions of the first member and the second member in a two-dimensional or three-dimensional direction.

In the present invention, "two-dimensionally or three-dimensionally in contact" means that the first member and the second member are biased by the biasing means and contact at the contact portion to maintain the initial shape. For example, as shown in FIG. ', 3a' and the edge portions 2a' and 3a' are in contact with each other, and as shown in FIG.

According to the above configuration, the first member and the second member that are in contact with each other at the contact portion are connected by the biasing means such as a spring or rubber, and the contact portions are pressed against each other and maintained in the initial state by the biasing force of the biasing means in a state where no external force is applied. The "initial form" includes not only a linear shape but also a curved shape bent at a certain angle. When a load is applied to the first member and the second member from the lateral direction, the first member and the second member bend at their ends. Then, when the load is released, the first member and the second member return to their initial shapes due to the urging force.
As described in claim 2, a plurality of sets of the first member and the second member may be provided in the axial direction. By configuring in this way, a joint having a plurality of bent portions can be obtained, and a joint that deforms in a curved shape as a whole can be obtained.

Another embodiment of the invention, as defined in claim 3, is characterized in thatIn a bendable joint provided in the bending portion of eyeglasses or provided to open and close the closure of accessories including bangles and necklaces,a first member and a second member whose ends are butted against each other in the axial direction and are joined so as to be bendable in a direction crossing the axis at the abutted ends; and a contact portion formed at least part of each of the ends of the first member and the second member, wherein the ends are brought into two-dimensional or three-dimensional contact by butting the first member and the second member so that the ends are engaged with each other to maintain the first member and the second member in an initial configuration; A magnetized portion provided at one of the ends of the first member and the second member to be matched, and a magnetized portion provided at the other end that is magnetically attached to the magnetized portion, the first member and the second member are connected to limit a movable region in which the first member and the second member are separated from each other in the axial direction or bent in a direction intersecting the axis in a state where the magnetized portion and the magnetized portion are magnetically attached, and the magnetized portion and the magnetized portion and the magnetized portion. an urging means for exerting an urging force for returning the first member and the second member to the initial shape when bending, in cooperation with the magnetic attraction force acting between the attachment portion, the first member, the second member and the urging means.are integrated into a unit so that they can be attached to and detached from the bent portion of the eyeglasses or the opening and closing portion of the accessory.There is a configuration.

A magnet can be used as the magnetized portion, and a metal or magnet that can be magnetically attached to the magnetized portion can be used as the magnetized portion. The magnetized portion and the magnetized portion may be provided in a part of the first member and the second member, or the entire first member and the second member may be formed as a magnetized body or a magnetized body.

In the third aspect of the invention, the term "connection" by the urging means is broadly defined to include connecting the first member and the second member in contact with each other as well as connecting them apart from each other. In the invention according to claim 3, in addition to an urging means such as a tension coil spring that exerts an urging force in a direction to bring the first member and the second member closer together, an urging means such as a compression coil spring that exerts an urging force in a direction to separate them (in this case, it is preferable to use one that is sufficiently weaker than the magnetic attraction force of the magnetic attraction means).

According to this configuration, the first member and the second member are connected by the biasing means and are also connected by the magnetic attraction force of a magnet or the like, so that the first member and the second member are not easily separated. On the other hand, if the connection by the magnet or the biasing means is released, the first member and the second member can be separated to facilitate replacement of parts such as temples. In addition, the first member and the second member can be bent by applying a load from the lateral direction, and when the load is released, the first member and the second member return to their initial shapes by the magnetic attraction force and the biasing force.
As described in claim 4, also in this embodiment, a plurality of sets of the first member and the second member may be provided in the axial direction. In this case, the magnetized portion and the magnetized portion may be provided for some of the pairs of the first member and the second member.

In the present invention, the first member and the second member are always urged in a direction to return to the initial shape by the action of the urging means or the action of the urging means and the magnetic attachment portion, so that they function as spring hinges, for example, when used as a substitute for the hinges of spectacles. In addition, since bolts are not used, it also functions as a boltless hinge.

As described in claim 5, in at least one of the contact portions, an inclined or curved guide portion that guides bending of the first member and the second member may be formed on at least a part of a side surface that is continuous with the contact portion. By doing so, the first member and the second member are bent along the guide portion.
As described in claim 6, a convex portion may be formed on one of the flat surfaces, and a concave portion that engages with the convex portion may be formed on the other flat surface. In this way, the joint relationship between the first member and the second member in the initial state can be kept constant by the engagement of the convex portion and the recessed portion when returning to the initial state, and misalignment between the first member and the second member can be prevented even if a load is applied in the lateral direction in the initial state.

As described in claim 7, the contact portion may be formed in a rectangular shape, a circular shape, or an elliptical shape in plan view. If the contact portion is circular, the first member and the second member can be bent in all directions.

Further, by adjusting the contact length in the bending direction of at least one of the contact portions, it is possible to adjust the magnitude of the urging force when the first member and the second member start bending. That is, if the length of the contact portion in the direction to be bent (contact length) is reduced, the first member and the second member can be bent with a small load.
As described in claim 8, the biasing means may be a core material that is elastically deformable in the stretching direction and the bending direction, and through holes may be formed in the first member and the second member, and the core material may be inserted through the through holes.

As described in claim 9, through holes may be formed in the first member and the second member, and a core material elastically deformable at least in the bending direction may be inserted through the through holes. By using a core material that is elastically deformable in the bending direction, it is possible to reinforce the urging force that tends to restore the initial shape, and by using the core material that is also elastically deformable in the stretching direction, it is possible to urge the first member and the second member in a direction to butt against each other, thereby reinforcing the magnetic attraction force.

As described in claim 10, a cover that can be deformed according to bending of the first member and the second member may be provided outside the first member and the second member. Such a cover can enhance the design of spectacles and accessories by hiding the joint portion or adding a pattern, and can constitute a unit in which the first member, the second member and the urging means are integrated by covering the whole. Examples of the cover include a heat-shrinkable film that shrinks when heated, and rubber such as silicone.

Preferred embodiments of the present invention will now be described in detail with reference to the drawings. In the following description, it is assumed that the joint of the present invention is applied to the hinge portion of spectacles.
FIG. 1 is a perspective view showing one embodiment of spectacles to which the joint of the present invention is applied.
The spectacles 10 have left and right rims 12, 12 for holding left and right lenses 11, 11, a bridge 13 connecting the left and right rims 12, 12, nose pads 14, 14 respectively attached to the rims 12, 12, and left and right temples T, T attached to the left and right sides of the front part F via endpieces 15, 15. The end pieces 15, 15 and the temples T, T are attached to the front portion F by joints 1, 1 so as to be freely bendable.

FIG. 2(a) is a partially cutaway side view illustrating the configuration of the first embodiment of the joint 1 of the present invention.
In the embodiment of FIG. 2(a), the ends of an extension coil spring 6 (hereinafter referred to as the spring 6) having a linear initial configuration along the axis C are fitted into the fitting holes 15a and Ta formed at the ends of the end piece 15 and the temple T.

The rod-shaped first member 2 and the rod-shaped second member 3 are inserted into the through hole of the spring 6 with their opposing end surfaces facing each other. This butted state is maintained by the biasing force of the spring 6 . Flat surfaces 2a and 3a as contact portions are formed on the facing end surfaces of the first member 2 and the second member 3, respectively, and the first member 2 and the second member 3 are butted in a surface contact state at the flat surfaces 2a and 3a. At this time, the first member 2 and the second member 3 are positioned on the axis C of the joint 1 that intersects the flat surfaces 2a and 3a in the vertical direction, and this state (the state shown in FIG. 3(a)) is the “initial configuration” in this embodiment.

The spring 6 is selected to have an elastic force capable of maintaining the initial shape with the temple T attached and limiting the movable regions of the first member 2 and the second member 3 when bent. Further, the spring 6 always urges the first member 2 and the second member 3 in the direction of returning them to their initial configurations.
The connection between the end piece 15 and the temple T and the joint 1 having the above configuration may be achieved, for example, by forming the inner diameters of the fitting holes 15a and Ta to be about the same as or slightly smaller than the outer diameter of the ends of the springs 6, and fitting the ends of the springs 6 into the fitting holes 15a and Ta, or by providing several protruding threads on the inner peripheral surfaces of the fitting holes 15a and Ta to engage with the threads of the springs 6 and screwing the ends of the springs 6 into the fitting holes 15a and Ta. You may enter.
Alternatively, the joint 15 and the temple T may be adhered to the joint 1 with an adhesive, or the joint 15, the temple T and the joint 1 may be magnetically attached with a magnet.

FIG. 2(b) is a partially broken side view illustrating the configuration of a second embodiment of the joint 1 of the present invention.
The basic configuration of the joint 1 of this embodiment is substantially the same as that of the joint 1 of the first embodiment, but in the joint 1 of this embodiment, the vertical axes of the flat surfaces 2a and 3a are inclined with respect to the axis C by an angle α. Therefore, the initial form of the joint 1 of this embodiment is bent at an angle α as shown in FIG. 2(b). Thus, in the joint 1 of the present invention, the initial shape can be freely set by adjusting the angle α of the flat surfaces 2a and 3a, which are the contact portions.

FIG. 2(c) is a partially broken side view illustrating the configuration of a third embodiment of the joint 1 of the present invention.
The joint 1 of this embodiment has a plurality of first members 2 and a plurality of second members 3 alternately arranged in the axis C direction. In this embodiment, the first member 2 and the second member 3 are formed in the shape of an abacus ball, and both end surfaces are formed as flat surfaces 2a and 3a. Both sides of the flat surfaces 2a and 3a of the first member 2 and the second member 3 are formed as tapered surfaces 2b and 3b, and each of the first member 2 and the second member 3 forming a pair can be bent at a bending angle corresponding to the taper angle of the tapered surfaces 2b and 3b.

FIG. 2(d) is a partially broken side view showing a fourth embodiment of the joint 1, which is a modification of the joint 1 of the third embodiment. In this embodiment, a through hole 7 is formed in the first member 2 and the second member 3, and a core material 8 is inserted into the through hole 7. As shown in FIG. As the core member 8 as the biasing means, one having elasticity in the bending direction and elasticity in the contracting direction can be used. As the core material 8, a metal material or a resin material having spring properties can be used, and the form thereof may be a coil spring-like one, a bar-like one, a braided wire-like one, or a stranded wire-like one. Also in this embodiment, coil springs 6 different from the core member 8 may be provided outside the first member 2 and the second member 3 as in the first to third embodiments.

FIG. 3(a) is a partially cutaway side view illustrating the configuration of a fifth embodiment of the joint 1. FIG.
In the embodiment of FIG. 3(a), the ends of a linear coil spring 6 (hereinafter referred to as the spring 6) whose initial configuration is along the axis C are fitted into the fitting holes 15a and Ta formed at the ends of the end piece 15 and the temple T.

The rod-shaped first member 2 and the rod-shaped second member 3 are inserted into the through hole of the spring 6 with their opposing end surfaces facing each other. Flat surfaces 2a and 3a are formed on the facing end surfaces of the first member 2 and the second member 3, respectively, and the first member 2 and the second member 3 are butted in surface contact with the flat surfaces 2a and 3a. At this time, the first member 2 and the second member 3 are positioned on the axis C of the joint 1 that intersects the flat surfaces 2a and 3a in the vertical direction, and this state (the state shown in FIG. 3(a)) is the "initial configuration" in this embodiment.
The spring 6 is selected to have a spring property capable of maintaining the initial shape in cooperation with the magnetizing force of the magnets 4 and 5 described below with the temple T attached. Also, the spring 6 may be either a compression coil spring or an extension coil spring.

The connection between the end piece 15 and the temple T and the joint 1 having the above configuration may be achieved, for example, by forming the inner diameters of the fitting holes 15a and Ta to be about the same as or slightly smaller than the outer diameter of the ends of the springs 6, and fitting the ends of the springs 6 into the fitting holes 15a and Ta, or by providing several protruding threads on the inner peripheral surfaces of the fitting holes 15a and Ta to engage with the threads of the springs 6 and screwing the ends of the springs 6 into the fitting holes 15a and Ta. You may enter. In this case, by using the spring 6 made of a magnetizable metal such as stainless steel, the looseness of the spring 6 is restricted by the magnetic attraction force of the magnets 4 and 5 .
Alternatively, the joint 15 and the temple T may be adhered to the joint 1 with an adhesive, or the joint 15, the temple T and the joint 1 may be magnetically attached with a magnet.

In this embodiment, the flat surface 2a of the first member 2 and the flat surface 3a of the second member 3 are formed by smoothing the ends of the first member 2 and the second member 3, and the ends function as the flat surfaces 2a and 3a that are butted against each other in surface contact. Magnets 4 and 5, which are magnetized bodies and magnetized bodies, are embedded in the centers of the flat surfaces 2a and 3a. As the magnets 4 and 5, it is preferable to use neodymium magnets with strong magnetism. The end surfaces of the magnets 4 and 5 may be flush with the flat surfaces 2a and 3a, or the end surface of one of the magnets (for example, the magnet 4 on the flat surface 2a side) may be set lower than the flat surface 2a, and the end surface of the other magnet (same magnet 5) may be set higher than the flat surface 3a so that the flat surfaces 2a and 3a are in surface contact while the convex magnet 5 fits into the concave magnet 4. In this way, by providing the flat surfaces 2a and 3a with mutually engaging protrusions and recesses, the first member 2 and the second member 3 can be accurately positioned on the axis C in the initial state, and even if a load acts on the first member 2 or the second member 3 from the lateral direction (direction intersecting the axis C), there is an advantage that the lateral positional relationship between the first member 2 and the second member 3 is unlikely to shift.

As shown in FIG. 3( a ), a cover 9 may be provided outside the spring 6 . The cover 9 can enhance the design of the spectacles 10 by hiding the joint 1 or applying a pattern to the surface. Examples of the cover 9 include a heat-shrinkable film that shrinks when heated, rubber such as silicone, and the like.

FIG. 3(b) is a partially broken side view showing a sixth embodiment of the joint 1. FIG.
Only points different from the joint of the embodiment of FIG. 3(a) will be described below.
In this embodiment, a recess 2c is formed in the center of a flat surface 2a formed at the end of the first member 2, and a ring-shaped magnet 4 is fitted in this recess 2c. Further, the whole second member 3 or an end portion thereof is made of a metal such as stainless steel that can be magnetically attached to the magnet 4 . That is, in this embodiment, the end portion of the second member 3 made of a metal with magnetism constitutes the "magnetized portion".

The end of the second member 3 is formed in a tapered shape with a diameter decreasing toward the tip, and a flat surface 3a is formed at the tip. The diameter of the opening of the concave portion 2c is approximately the same as that of the flat surface 3a so that the flat surface 3a is magnetically attached to the magnet 4. As shown in FIG. A convex portion 3c is formed in the center of the flat surface 3a so as to be detachably engaged with a through hole (concave portion) of the ring-shaped magnet 4. As shown in FIG. The action of the convex portion 3c and the through hole is the same as that of the concave portion and the convex portion described in the embodiment of FIG. 3(a).

In this embodiment, forming the end of the second member 3 in a tapered shape makes it easier to bend the first member 2 and the second member 3 . The ease of bending is closely related to the size of the flat surface 3a (the diameter in the direction to be bent and the length of the diagonal line). If the diameter in the direction to be bent or the length of the diagonal line is increased, it becomes difficult to bend in that direction, and conversely, if it is decreased, it becomes easier to bend.

This means that by making the diameter and the length of the diagonal line different depending on the direction, a single joint 1 can have both directions in which it is easy to bend and directions in which it is difficult to bend. For example, as shown in FIGS. 6(a) to 6(d), the shape of one of the flat surfaces 2a and 3a is circular, elliptical, square, polygonal, or the like, so that when a load acts on the joint 1 in the lateral direction, the bending direction can be regulated in a specific direction.

FIG. 3(c) is a partially broken side view showing a seventh embodiment of the joint 1. FIG.
The joint 1 of this embodiment has a plurality of first members 2 and a plurality of second members 3 alternately arranged in the axis C direction. In this embodiment, the first member 2 and the second member 3 are formed in the shape of an abacus ball, and both end surfaces are formed as flat surfaces 2a and 3a. Also, in this embodiment, the first member 2 and the second member 3 are made of magnets. Both sides of the flat surfaces 2a and 3a of the first member 2 and the second member 3 are formed as tapered surfaces similar to the tapered surface 3b of the second member 3 of the joint 1 of the sixth embodiment shown in FIG.

In the seventh embodiment of FIG. 3(c), the entire set of the first member 2 and the second member 3 is made of magnets (the magnetized portion and the magnetized portion), but as a modification of the seventh embodiment, only part of the set of the first member 2 and the second member 3 may have the magnetized portion and the magnetized portion. For example, in the joint 1 of the third embodiment shown in FIG. 2(c), only a part of the set of the first member 2 and the second member 3 may be made of magnets.

FIG. 3(d) is a partially broken side view showing the eighth embodiment of the joint 1, which is a modification of the joint 1 of the seventh embodiment. In this embodiment, a through hole 7 is formed in the first member 2 and the second member 3, and a core material 8 is inserted into the through hole 7. As shown in FIG. As the core material 8, a material having elasticity in the bending direction or a material having elasticity in the stretching direction can be used. By using a core material that is elastically deformable in the direction of expansion and contraction, it is possible to urge the first member 2 and the second member 3 in a butting direction, thereby reinforcing the magnetic attraction force of the magnet. In addition, by using a core material that is elastically deformable in the bending direction, it is possible to reinforce the biasing force of the spring 6 that tries to return to the initial shape. As the core material 8, a metal material or a resin material having spring properties can be used, and the form thereof may be a coil spring-like one, a bar-like one, a braided wire-like one, or a stranded wire-like one.

4A and 4B are diagrams for explaining the action of the joint 1 of the sixth embodiment shown in FIG.
When a load is applied to the temple T in the initial configuration in the lateral direction (direction intersecting with the axis C), the second member 3 is tilted from the initial configuration shown in FIG. In this state, the biasing force acts on the second member 3 and the temple T in the direction opposite to the load direction due to the magnetic attraction force of the spring 6 and the magnet 4 . This is the same biasing force that acts on the head of the spectacle wearer in the spring hinge, but in the joint 1 of the present invention, the biasing force of the spring 6 and the magnetic force work together, making it possible to apply a greater biasing force than the conventional spring hinge.
When a further load is applied, the tapered surface 3b comes into contact with the flat surface 2a, and the joint 1 is held at the bending angle (see FIG. 4(a)(iii)). For example, when folding the temple T, the second member 3 may be bent with respect to the first member 2 until the tapered surface 3b contacts the flat surface 2a.

FIG. 5 is a diagram showing the action of the joint 1 of the third, sixth or eighth embodiment shown in FIG. 2(c), FIG. 3(c) or FIG. 3(d). 2(c), 3(c) or 3(d) is composed of a plurality of short first members 2 and second members 3. Therefore, when a load is applied to the temple T in the lateral direction, bending occurs at the butted portions of the plurality of first members 2 and second members 3, and the joint 1 bends from the initial configuration of FIG. 5(i) to the postures of FIGS. 5(ii) and 5(iii).

Also, although not shown, in the joint 1 of the present invention, the temple T can be removed from the joint 1 by releasing the engagement between the fitting hole Ta of the temple T and the spring 6, thereby making it possible to replace the temple T with another design, function, or form.

The joint 1 of the present invention can be unitized by combining the first member 2, the second member 3 and the spring 6 into one. For example, as shown in FIG. 7(a), the first member 2, the second member 3 and the spring 6 may be covered with a cover made of heat-shrinkable film or the like, or both ends 6a, 6a of the spring 6 may be slightly reduced in diameter as shown in FIG. 7(b). The joint 1 that is unitized in advance in this way only needs to be attached to the fitting 15 at one end and to the temple T at the other end, thereby simplifying the process of assembling the spectacles.

Although preferred embodiments of the invention have been described, the invention is not limited to the above description.
For example, the configurations of the first to eighth embodiments described above can be appropriately combined. Also, in the above description, the tapered surface 3b is formed on the second member 3, but the tapered surface 2b may be formed on the second member 2, or the tapered surface may be replaced by a curved surface.
Further, although the spring 6 is used as the biasing means, other elastic bodies such as rubber may be used as long as they have elasticity.
Also, in the above description, the case where the joint 1 is applied to the hinge of spectacles has been described as an example, but the joint 1 of the present invention can be used not only for the hinge but also for other parts such as between the temple T and the end M.
Moreover, it is applicable not only to eyeglasses but also to accessories such as bangles and necklaces. FIG. 8 is a diagram showing an example in which the joint 1 of the present invention is applied to a bangle 20. In the bangle 20 in the illustrated example, the joint 1 is provided in the opening/closing portion 22, which is the open portion of the main body 21, and the joint 1 allows the opening/closing portion 22 to be freely opened and closed. By doing so, the bangle 20 can be easily worn on the wearer's arm. One or a plurality of joints 1 can also be used for the body portion of hangul 20 .

1 is a perspective view showing an embodiment of spectacles to which the joint of the present invention is applied; FIG. Fig. 2(a) is a partially broken side view showing a first embodiment of the joint 1 and explaining its configuration; Fig. 2(b) is a partially broken side view showing a second embodiment of the joint 1; Fig. 2(c) is a partially broken side view showing a third embodiment of the joint 1; Fig. 3(a) is a partially broken side view showing a fifth embodiment of the joint 1 and explaining its configuration; Fig. 3(b) is a partially broken side view showing a sixth embodiment of the joint 1; Fig. 3(c) is a partially broken side view showing the seventh embodiment of the joint 1; It is a figure explaining an effect|action of the joint 1 of 6th embodiment shown in FIG.3(b). It is a figure which shows the effect|action of the joint 1 of 6th or 8th embodiment shown in FIG.3(c) or FIG.3(d). It is a figure which shows an example of the shape of a flat part. It is a figure which shows an example which unitized the 1st member, the 2nd member, and the spring. FIG. 4 is a diagram showing an example in which the joint of the present invention is applied to a bangle; FIG. 4 is a partial perspective view explaining the form of the contact portion in the joint of the present invention;

1 joint 2 first member 2a flat surface 2b tapered surface 2c recess 3 second member 3a flat surface (contact portion)
3b tapered surface 3c projections 4, 5 magnet (magnetized body, magnetized body)
6 spring (biasing means)
7 through hole 8 core 9 cover 15 end piece 15a fitting hole 20 bangle 21 main body 22 opening/closing part T temple Ta fitting hole M modern

Claims (10)

In a bendable joint provided in the bending portion of eyeglasses or provided to open and close the closure of accessories including bangles and necklaces ,
a first member and a second member that are butted against each other at their ends in the axial direction and that are joined so as to be freely bendable in a direction intersecting the axis at the abutted ends;
a contact portion formed in at least a part of the end portions of each of the first member and the second member, and engaging the first member and the second member to maintain the initial configuration of the first member and the second member;
urging means for always urging the contact portions of the first member and the second member in abutting direction to limit a movable region in which the first member and the second member are separated in the axial direction or bent in a direction intersecting the axis;
has
The first member, the second member, and the urging means are integrated into a unit so that they can be attached to and detached from the bent portion of the spectacles or the opening/closing portion of the accessory;
A fitting for eyeglasses or accessories characterized by: 2. A joint for spectacles or an accessory according to claim 1, wherein a plurality of sets of said first member and said second member are provided in the axial direction. In a bendable joint provided in the bending portion of eyeglasses or provided to open and close the closure of accessories including bangles and necklaces,
a first member and a second member that are butted against each other at their ends in the axial direction and that are joined so as to be freely bendable in a direction intersecting the axis at the abutted ends;
a contact portion formed in at least a part of the end portions of each of the first member and the second member, and engaging the first member and the second member to maintain the initial configuration of the first member and the second member;
a magnetized portion provided at one of the ends of the first member and the second member to be abutted, and a magnetized portion provided at the other end and magnetically attached to the magnetized portion;
a biasing means that connects the first member and the second member, restricts a movable region in which the first member and the second member are separated from each other in the axial direction or bends in a direction intersecting the axis in a state where the magnetized portion and the magnetized portion are magnetically attached, and cooperates with the magnetic attraction force acting between the magnetized portion and the magnetized portion to exert a biasing force that causes the first member and the second member to return to the initial shape when bent;
has
The first member, the second member, and the urging means are integrated into a unit so that they can be attached to and detached from the bent portion of the spectacles or the opening/closing portion of the accessory;
A fitting for eyeglasses or accessories characterized by: A joint for spectacles or an accessory according to claim 3, wherein a plurality of sets of the first member and the second member are provided in the axial direction, and at least one of the sets of the first member and the second member is provided with the magnetized portion and the magnetized portion. In at least one of the contact portions, an inclined or curved guide portion that guides bending of the first member and the second member is formed on at least a part of a side surface that is continuous with the contact portion. The joint for eyeglasses or accessories according to any one of claims 1 to 4. A joint for spectacles or an accessory according to any one of claims 1 to 5, wherein a projection is formed on one of the contact portions, and a recess that engages with the projection is formed on the other contact portion. A joint for spectacles or an accessory according to any one of claims 1 to 6, wherein the contact portion is formed in a rectangular shape, a circular shape, or an elliptical shape in plan view. A joint for spectacles or an accessory according to any one of claims 1 to 7, wherein the urging means is a core material that is elastically deformable in stretching and bending directions, through holes are formed in the first member and the second member, and the core material is inserted through the through holes. A through hole is formed in the first member and the second member, and a core material that is elastically deformed at least in a bending direction is inserted into the through hole. The joint for eyeglasses or accessories according to any one of claims 3 to 7 . The spectacles or accessory joint according to any one of claims 1 to 9, wherein a cover that can be deformed according to bending of the first member and the second member is provided on the outside of the first member and the second member.

Images