JP2008136521A - Joint for cord-like body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint for cord-like body in which a joint section can be easily bent even after jointing while securing easiness of attachment and detachment by magnets. <P>SOLUTION: In the joint 11 for cord-like body arranged in respective both end portions of the cord-like body 10 and connecting both the end portions of the cord-like body to make a circular body, the joint 11 for the cord-like body has a cylindrical body 11a with a bottom having a through hole 11e in its bottom portion and a spherical magnet 11f housed in the cylindrical body and a part of which can be exposed outward from the through hole of the bottom portion and is constituted such that the spherical magnet is turnable. The spherical magnets 11f, 11f are attracted each other and the joint section can be freely bent even after connecting by connecting the joints 11, 11 for the cord-like bodies. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a string-like joint which is provided at both ends of various string-like bodies including a necklace, and which joins both ends of the string-like body to form an annular shape.

  Conventionally, there exists patent document 1 (Unexamined-Japanese-Patent No. 2000-189222) as a joint of necklaces. This is a convex side engagement body having an engagement groove formed in a bowl shape from the tip on the cylindrical side surface, an insertion hole into which this convex engagement body is inserted, and the middle of this insertion hole, It is the structure provided with the engagement protrusion which protrudes toward the center of a hole.

Or the thing of the structure which makes a ring by fixing a magnet to the both ends of a necklace, and adsorb | sucking the magnet of both ends is also known. By using a magnet, connection and disconnection can be easily performed.
JP 2000-189222 A

  However, as for the thing of the structure described in patent document 1, the structure which makes it cyclic | annular by fixing a magnet to the both ends of a necklace, and adsorb | sucking the magnet of both ends, all, the joint part is fixed linearly, The jointed part cannot be bent after the joint. In the case of a magnet, it will separate if it is bent forcibly. Therefore, there is a problem that a linear portion remains in a part of the annular shape, and the beauty as a necklace is impaired. In addition, since the joint portion is linear, there is a problem in that it is restricted in use, such as being unable to connect if there is no length in the string-like body such as a necklace.

  The present invention has been made to solve such a problem, and provides a string-like joint that ensures easy attachment / detachment by a magnet and can be easily bent even after the joint portion has been joined. The purpose is that.

  In order to achieve the above object, the string-like joint of the present invention is provided at each of both ends of the string-like body. The string joint has an end part of a spherical surface, the end has a spherical magnet, and the spherical magnet is rotatable to change the position of the magnetic pole. It is a feature.

  The joint includes a bottomed cylindrical body having a bottom part that forms a part of a spherical surface, and a spherical magnet accommodated in the cylindrical body, or the joint has a through-hole in the bottom part. The bottomed cylindrical body and a spherical magnet that is accommodated in the cylindrical body and a part of which can be exposed to the outside from the through hole of the bottom part can be used.

  When the string-like joints provided at both ends of the string-like body are brought close to each other, they are easily attracted by the attractive force of the spherical magnet and become annular. When the magnetic poles of both spherical magnets are the same magnetic pole, they repel each other and are not attracted. In such a case, one or both spherical magnets rotate and different magnetic poles face each other. become able to. The state in which the string-like joints at both ends are attracted is a state where the spherical surface and the spherical surface are in contact with each other, so that the portion where the string-like joints are joined can be bent along the shape of the ring.

  According to the joint for string-like body of the present invention, after connecting both ends of the string-like body into an annular shape, it is possible to achieve an excellent effect that the joint portion can be bent freely. Further, when two spherical magnets are attracted, the magnetic flux density is also lower than in the case of a single magnet, and a strong attracting force can be obtained with a low magnetic flux density.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a use state of the string-like joint of the present invention. In the figure, a string-like body 10 includes string-like joints (hereinafter referred to as “joints”) 11 and 11 having the same shape and structure at both ends. The string-like body 10 can be used for various purposes such as a chain of noble metal such as a necklace and various kinds of accessories such as accessories and handbags.

  FIG. 2 is an enlarged cross-sectional view of the joint 11. The joint 11 has a lid 11b screwed to one end of a bottomed cylindrical body 11a with a screw. The cylindrical body 11a of the illustrated embodiment is a cylindrical shape, but may be a polygonal cylindrical shape. At the bottom of the cylindrical body 11a, there is an inclined surface 11c inclined in a mortar shape, and a through hole 11d is formed in the center. On the other hand, the lid 11b also has a through hole 11e at the center.

  A spherical magnet 11f is accommodated in the cylindrical body 11a. The outer diameter of the magnet 11f is slightly smaller than the inner diameter of the cylindrical body 11a, and can rotate within the cylindrical body 11a. Moreover, the magnet 11f is in a state in which a part of the magnet 11f can protrude outward from the bottom through-hole 11d.

  The end of the string-like body 10 is inserted into the through-hole 11e drilled in the center of the lid body 11b, and the string-like body 10 is removed from the lid body 11b by fixing the fastener 10a inside the lid body 11b. It prevents it from coming out. A spacer 11g is provided between the end face of the string-like body 10 and the spherical magnet 11f to limit the range in which the magnet 11f can move.

  The other joint 11 indicated by the phantom line has the same configuration. Therefore, when the joints 11 are attached to both ends of the string-like body 10 and the joints 11 are brought close to each other, the spherical magnets 11f approach each other. Magnets have N and S poles. The same poles repel each other, and if they are different poles, they are attracted. If the opposing magnetic poles of the spherical magnets 11f and 11f are different polarities, the joints 11 and 11 are attracted.

  On the other hand, when the opposing magnetic poles of the spherical magnets 11f and 11f are the same, the spherical magnet 11f of the present invention is configured to be rotatable even in the cylindrical body 11a, and therefore when both come closer. One or both of them rotate so that the opposite poles face each other and can be adsorbed.

  Further, since the spherical magnets 11f are attracted to each other, the attraction becomes a point attraction at the point A as shown in FIG. 2, and after the joints 11 and 11 are attracted to each other, as shown in FIG. When 11 is fixed, the counterpart joint can be freely bent in a range of 11 ′ to 11 ″. When the joint portion is bent, the attracting point A also moves on the surface of the spherical magnet 11f. However, the spherical magnet 11f also rotates following the bending, and the state where the N pole and the S pole are always attracted can be maintained.

  Therefore, as shown in FIG. 1, the joint portion of the joints 11 and 11 can be bent along the string-like body 10 having an annular shape, and a natural-feeling ring can be formed.

  In the above configuration, the spacer 11g is provided to limit the movement range of the spherical magnet 11f, but is not essential. Even if the movement range of the spherical magnet 11f is increased without the spacer 11g, when the other joint is brought closer, the spherical magnet 11f in this joint attracts and attracts the magnet 11f of the counterpart joint. Because it can.

  When a magnet is attached to a body such as a jewelry, the magnetic flux density is 2000 gauss or less for health reasons. On the other hand, the spherical magnet 11f of the present invention can make the magnetic flux density strong exceeding 2000 gauss. When worn, the spherical magnets 11f are attracted to each other, but when the spherical magnets 11f are attracted, the synthesized magnetic flux density is found to be 1000 gauss or less. This is presumably because the magnetic flux density is absorbed by adsorbing the spherical magnets 11f. Therefore, it is possible to obtain a joint having a strong binding force without adversely affecting health.

  In the above configuration, the bottomed cylindrical body 11a and the lid body 11b are preferably non-magnetic bodies. This is because when the magnetic body is made of iron or the like, the cylindrical body 11a itself becomes magnetized and the spherical magnets are not attracted to each other.

  FIG. 4 is a sectional view showing a second embodiment of the present invention. The joint 21 has a lid 21b screwed to one end of a bottomed cylindrical body 21a with a screw. The lid body 21b has a through hole 21e in the center, but the bottom surface 21c of the cylindrical body 21a protrudes in a hemispherical shape and has no through hole. A spherical magnet 11f is accommodated in the cylindrical body 21a. The diameter of the magnet 11f is slightly smaller than the diameter of the inner surface of the bottom surface 21c, and is in a state where it can rotate within the cylindrical body 21a.

  The end of the string-like body 10 is inserted into the through hole 21e drilled in the center of the lid 21b, and the string-like body 10 is removed from the lid 21b by fixing the fastener 10a inside the lid 21b. It prevents it from coming out. The same spacer 11g as in FIG. 2 is provided between the end face of the string-like body 10 and the spherical magnet 11f to limit the range in which the magnet 11f can move.

  The other joint 21 indicated by the phantom line has the same configuration. Therefore, when the joints 21 attached to both ends of the string-like body 10 are brought close to each other, the joints 21 and 21 are attracted by the attractive force of the spherical magnets 11f inside. Magnets have N and S poles. The same poles repel each other, and if they are different poles, they are attracted. Since the spherical magnet 11f of the present invention is configured to be rotatable even in the cylindrical body 21a, even if the same poles are on the tip side, one or both of them rotate when they approach each other. However, the opposite poles face each other, and the bottom surfaces 21c and 21c can be adsorbed without fail. Further, since the spherical bottom surfaces 21c and 21c are attracted to each other, the adsorption becomes point adsorption, and after the joints 21 and 21 are attracted, the joined joint 21 is bent freely as described in FIG. be able to. When the joint portion bends, the spherical magnet 11f also rotates following the bend, so that the state where the N pole and the S pole always face each other can be maintained.

It is a figure which shows the state which used the joint for string-like bodies of this invention for a string-like body. It is an expanded sectional view of the joint for string-like bodies of FIG. It is a figure explaining the state which can be bent after couple | bonding the joint for string-like bodies. It is sectional drawing of the joint for string-like bodies of 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 String-like bodies 11, 21 Joint 11a, 21a for string-like bodies 11d of cylindrical bodies 11f (hole of cylindrical body) Spherical magnet 21c A hemispherical bottom face

Claims (3)

  A string-like joint provided at each of both ends of the string-like body to connect the both ends of the string-like body into an annular shape, wherein the string-like joint includes an end portion that forms a part of a spherical surface. A string-like joint characterized in that the end has a spherical magnet, and the spherical magnet is rotatable to change the position of the magnetic pole.   2. The string-like body according to claim 1, wherein the joint includes a bottomed cylindrical body having a bottom part forming a part of a spherical surface, and a spherical magnet accommodated in the cylindrical body. For joints.   The joint has a bottomed cylindrical body having a through hole in a bottom portion, and a spherical magnet that is housed in the cylindrical body and a part of which can be exposed to the outside from the through hole in the bottom portion. The string joint according to claim 1.

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