JP2006136746A - Clasp and slide structure of chain for accessory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clasp in which an elastic body inorporated as a clasp in a casing can smoothly be rotated linking to the twisting of accessory chain, and to provide a rotatable slide structure for an accessory using the clasp. <P>SOLUTION: A casing comprises an oval shape casing in which a pair of holes are formed by embedding a vertically long elastic tube into an opening set in a vertically long pipe and then drawing the diameter of the opening of the pipe. In the elastic tube, the outer periphery wall is not pressed against the inner wall of a hollow part of the casing and a gap wherein the elastic tube can rotate centering on a through hole is formed between the inner wall of the hollow part of the casing and the outer periphery wall of a side face of the elastic tube to enable the elastic tube to rotate in the casing linking to the twisting of the accessory chain. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fastener having a built-in elastic material and a sliding structure for a chain for clothing using the fastener.

Conventionally, as a structure that adjusts the length of a chain or loop tie using an adjuster, for example, in Utility Model Registration No. 3042071, there is a fastener that pushes and fastens a chain for decoration, It has a shape and has a through-hole through which a chain for jewelry is inserted, and an elastic body for preventing the chain for detachment from inside is included. The structure of the fastener is known.
In this elastic body, both ends of a single spring plate are bent into a semi-cylindrical shape on the same side, and are formed into back-to-back arc-shaped plate springs. It is pinched by pushing through the chain for jewelry.
Therefore, the contact surface between the chain for clothing and the elastic body is narrow, and the clamping pressure acts only locally, so it is necessary to increase the clamping pressure, but this causes local damage to the clothing chain. It is a drawback that is easy to apply.
Japanese Patent Laid-Open No. 2000-50922 discloses a configuration in which an O-ring is built in a hollow spherical casing, and a string member penetrating the casing can be slid and restrained at a desired position.
According to this, since the O-ring is used, the string member is hardly damaged.
However, in this configuration, since the outer periphery of the O-ring is pressed against the inner wall surface of the hollow portion of the casing even when no load is applied to the O-ring, the chain passing through the O-ring is against the longitudinal axis. When twisting in the direction of rotation, there is a drawback that resistance due to the elastic repulsion force of the inner peripheral wall surface of the hole of the O-ring is applied to the chain and is not easily twisted.
Furthermore, Japanese Patent Application Laid-Open No. 2000-139528 discloses a fastener for inserting an elastic tube into a hollow casing.
JP 2000-50922 JP 2000-139528 A

  The present invention was devised in view of the above circumstances, and its main problem is that the elastic body incorporated in the casing as a fastener can smoothly rotate in conjunction with the twist of the chain for clothing. It is an object of the present invention to provide a fastener and a sliding structure for a chain for use with the fastener.

In order to achieve the above object, in the invention of the fastener of claim 1,
An elastic body made of an elastic tube having a through hole portion that can communicate with the pair of holes is incorporated in a casing made of a hollow body that forms a pair of holes at positions facing each other and communicates from the outside of the casing to the hollow portion. In the fastener for restraining the movement in the axial direction of the chain for jewelry inserted through the casing and the elastic body,
The casing is an oval in which a longitudinal elastic tube is built in an opening provided in a longitudinal pipe and then the diameter of the opening of the pipe is reduced to form the pair of holes and the elastic tube does not come out. Made of a shaped casing,
The outer wall of the elastic tube is not pressed against the inner wall of the hollow portion of the casing, and the elastic tube turns around the through hole between the inner wall of the hollow portion of the casing and the outer peripheral wall of the side surface of the elastic tube. Possible gaps are formed,
Technical measures are taken such that when the chain for the twist is twisted, the elastic tube can be swung in the casing in conjunction with the chain for the body.
In the invention of claim 2,
The elastic body has a technical means that the outer diameter of the elastic body is set longer than the diameter of the hole in the casing, and the diameter of the through hole is set shorter than the diameter of the hole in the casing. I'm taking it.
In the invention of claim 3,
A technical means is provided in which the elastic tube is formed of a cylindrical body having a circular cross section, an elliptical cross section, or a polygonal cross section.

Next, in the invention of the sliding structure of the chain for jewelry of claim 4,
A slide of a chain for jewelry comprising a chain for jewelry and a fastener that contains an elastic body in a casing made of a hollow body and restrains movement in the axial direction of the chain for jewelry inserted through the casing and the elastic body Structure,
The fastener is described in any one of claims 1 to 3,
The chain takes the technical means of passing through the casing of the fastener and being elastically held by the elastic body.
In the invention of claim 5,
Technical measures are taken that the length of the ring formed by the chain is adjustable by a fastener.
In the invention of claim 6,
Technical measures are taken such that the attachment position of the fastener with respect to the chain is adjustable.

In the fastener chain sliding structure of the jewelry chain according to the present invention, the elastic body is externally fitted and restrained on the jewelry chain, so that even if the fastener is slid along the jewelry chain, The clamping area with the chain is widened to increase the clamping pressure, and the jewelry chain is not easily damaged.
In addition, since the elastic body has a gap without being pressed against the inner peripheral wall of the casing, the elastic body passed through the chain can be rotated around the axis in the casing or can be easily twisted in the rotation direction. Moreover, it can be bent using a gap.
In addition, since it has a simple structure of a fastener and an elastic body, it is lightweight and easy to manufacture, and can be reduced in cost for industrial mass production.

  In the following, preferred embodiments of the fastener and the sliding structure for the chain of the present invention will be described.

As shown in FIGS. 2 and 3, the fastener 10 includes a casing 1 and an elastic tube 4 built in the casing 1.
In the example shown in the figure, the casing 1 is an oval pipe having a substantially oval cross section obtained by flattening a substantially cylindrical pipe (see FIG. 1 (d)). In this invention, the outer surface is a polyhedron. Or any hollow body shape such as an egg shape, a dharma shape, a spherical shape, etc., and any shape that can be inserted through the chain for clothing 2 may be used.
FIG. 7 shows an application example in which the casing 1 has a hollow spherical shape.

  The jewelry chain 2 is a chain constituting a necklace, a bracelet, or the like, and a flat chain, a compact chain, an oval chain, a link chain, a deformed chain, or other known shapes can be used.

In order to insert the chain 2 for jewelry into the fastener 10, the casing 1 is provided with a pair of holes 3 a and 3 b at positions facing each other at both ends in the longitudinal direction.
The pair of holes 3 a and 3 b have the same shape and communicate with the hollow portion 1 a from the outside of the casing 1, and are formed so as to serve as entrances and exits when passing through the casing 1.

Next, the elastic tube 4 is made of a cylindrical synthetic rubber in the present embodiment. As shown in FIG. 3A, the diameter L2 which is the outer diameter of the elastic tube 4 is the hole 3a (3b) of the casing 1. ) Is set to be longer than the diameter L1 (L2> L1), and the diameter L3 of the through hole portion 4a is set to be shorter than the diameter L1 of the hole 3a (3b) of the casing 1 (L3 <L1).
Further, the diameter L4 of the maximum outer peripheral portion of the jewelry chain 2 is slightly shorter than the diameter L1 of the hole, but the diameter L3 of the through hole portion 4a is set shorter than the diameter L4.
That is, L2>L1>L4> L3.
Therefore, when the elastic chain 4 is inserted through the interior chain 2, an urging force acts in a direction to tighten the outer periphery of the body chain 2.

The length of the elastic tube 4 is such that, when no load is applied, both ends thereof are not in pressure contact with the inner wall of the hollow portion 1a of the casing 1 but both ends are in contact with the inner wall (see FIG. 3 (a)). ) Or a length that does not contact (see FIG. 3B).
When the elastic tube 4 is stored in the casing 1 in a compressed state, both ends in the longitudinal direction of the elastic tube 4 are strongly pressed against the inner wall in the vicinity of the hole of the casing 1 even if no load is applied to the elastic tube 4. This is because the elastic tube 4 is difficult to rotate.

Further, the diameter L2 of the elastic tube 4 is set shorter (L2 <L5) than the diameter of the hollow portion of the casing 1 (the shortest diameter in the case of an oval shape) L5.
Therefore, the elastic tube 4 is housed so as to have a gap S between the inner wall of the hollow portion 1a of the casing 1 along the outer peripheral wall thereof.

  The elastic tube 4 is formed in advance in the manufacturing process of the casing 1 at the stage where the hole of the vertically long pipe 11 is slightly narrowed (see FIG. 1B) (see FIG. 1B). )), And then the elastic tube 4 is prevented from coming out as a pipe 13 (see FIG. 1 (c)) narrowed by reducing the diameter of the hole, and is further flattened into an oval shape to produce the casing 1 (see FIG. 1). 1 (d)).

Since it is comprised in this way, if the chain 2 for jewelry is inserted in the elastic tube 4, the elastic tube 4 will be expanded in the expansion direction by the outer peripheral surface of the chain 2 for jewelry, and elastic tube 4 itself will shrink | contract A biasing force acts in the direction.
As a result, the jewelry chain 2 inserted into the elastic tube 4 is always clamped by the elastic tube 4 by tightening by the urging force of the elastic tube 4.

Here, the elastic tube 4 is interlocked with the movement of the chain for clothing 2 in the hollow portion 1 a of the casing 1 of the fastener 10.
Therefore, as shown in FIG. 2, when the casing 1 of the chain 2 for attachment or the fastener 10 is pulled to either side, the elastic tube 4 is pulled in conjunction with the end of the elastic tube 4 so that the hole 3a of the casing 1 or It collides with the inner wall near 3b and the movement of the elastic tube 4 is restrained.

When the casing 1 or the chain 2 of the fastener 10 is further pulled strongly, the abutting side of the distal end of the elastic tube 4 is compressed, and the chain 2 for personal belongings penetrates the elastic tube 4 against the clamping pressure of the elastic tube 4. It is pulled out while expanding the hole 4a.
As a result, the fastener 10 can be slid along the jewelry chain 2 to change its position relative to the jewelry chain 2.

  If the fastener 10 is pulled in the reverse direction, the elastic tube 4 that clamps the chain 2 for movement moves in the reverse direction in the fastener 10 and abuts against the inner wall of the opposite hole. Since the jewelry chain 2 is pulled out in the reverse direction, the fastener 10 can be slid in the reverse direction.

In addition, since the elastic tube 4 has an annular gap formed in the hollow portion 1a of the casing 1 between the outer periphery of the elastic tube 4 and the inner wall of the hollow portion 1a, no load is applied to the elastic tube 4. In the state, it can be easily turned around the axis of the elastic tube 4 in the hollow of the casing 1.
At this time, even if both ends or one end in the longitudinal direction of the elastic tube 4 are in contact with the inner wall of the casing 1, no resistance force that prevents the above-described turning is generated.
Therefore, when the jewelry chain is twisted, the elastic tube 4 can be easily rotated in the twisting direction in conjunction with this in the casing 1.
In FIG. 2, reference numeral 20 denotes a retaining ring fixed to the tip of the chain 2, and reference numeral 30 denotes a stopper that is fixed to the ring 21 that is fixed to the casing to detachably retain the retaining ring 20.

In the above embodiment, the case where the gap is continuously formed in an annular shape along the outer periphery of the elastic tube 4 has been shown, but a structure in which a part thereof is in contact with the inner wall of the hollow portion may be employed.
Even in this case, if the elastic tube 4 is strongly pressed against the inner wall, it becomes an obstacle to turning.

  In addition, at both ends of the elastic tube 4 in the longitudinal direction, when the chain 2 is slid, at least the end portion on the pulled side is pressed against the peripheral wall in the vicinity of the hole 3a (3b) of the casing 1. When such a load is no longer applied, it is possible to return to the original state so long as it does not come into contact with the inner wall of the hollow portion 1a of the casing 1 and does not interfere with the turning of the chain 2. Even if it exists, the resistance is small, and similarly, the chain can be turned relatively easily.

  As described above, the gap S is formed continuously or intermittently along the outer periphery of the elastic tube 4, so that the chain pinched by the elastic tube 4 is swung around the axis or bent to the gap portion. Since it can be worn, the twist of the chain when worn can be released smoothly.

  In the above-described embodiment, the configuration in which the attachment position is changed by sliding the fastener 10 attached to the single accessory chain 2 is illustrated, but FIG. The structure which the fastener 10 to bind is slid and changes a position is shown.

The fastener 10 has a configuration in which a pair of jewelry chains 2 arranged in parallel in a casing 1 are fitted in parallel, and an elastic tube 4 is externally fitted to each of the jewelry chains 2 in the casing 1. .
Here, in the case of the illustrated example, for convenience of explanation, a plurality of identical configurations are distinguished by attaching “′” to the reference numerals.
That is, the casing 1 is formed with a pair of holes 3a, 3a 'and 3b, 3b' facing each other at both ends.

The elastic tubes 4 and 4 'are arranged between the holes 3a and 3b and between the holes 3a' and 3b ', and two parallel pieces that penetrate the holes 3a and 3a' and 3b and 3b '. It is inserted in the chain 2, 2 '.
The jewelry chains 2 and 2 'are double-wound chains in parallel, and a fastener 10 is used to bundle the two chains 2 and 2'.
Or the case where the fastener 10 is used in order to bundle the chain 2 and 2 'of a pair of edge part side of one chain for jewelry may be sufficient.

  In this case as well, the position of the fastener 10 relative to the jewelry chain 2, 2 'can be changed by pulling the casing 1 of the fastener 10 with respect to the respective jewelry chain 2, 2'.

Next, FIG. 5 shows a different embodiment in which the fastener 10 is slidable with respect to a plurality of (four) jewelry chains.
Also in this case, as in the above-described embodiment, four holes 3a and 3b are provided in one casing 1 as inlet / outlet holes, and four elastic tubes 4 are provided corresponding to each. Since other configurations are the same as those in the above embodiment, the description thereof is omitted.

In FIG. 6, the fastener 10 includes a plurality of casings 1 </ b> A and 1 </ b> B that are detachably connected, and an elastic tube 4 is built in each casing 1 </ b> A and 1 </ b> B, and each casing 1 </ b> A and 1 </ b> B is fitted into this. The position can be changed by sliding along the trimmed chains 2 and 2 '.
The casings 1A and 1B are respectively provided with respective constituent portions 20 of an engaging means, a latching structure, and other detachable connecting means, and can be integrally connected so as to be separable.

For example, a structure of a hook and a receiving part that receives the hook, a structure that engages with unevenness, a structure that uses magnetic attachment of a magnet, and other various structures can be used.
The fastener 10 can be used for a loop tie type necklace, for example.
In this case, the necklaces can be removed by separating the casings 1A and 1B, and the casings 1A and 1B can be connected to each other or pulled with respect to the chain 2 for clothing while being separated. The position can be adjusted.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

It is explanatory drawing which shows the formation procedure of a fastener. It is sectional drawing of a fastener. It is sectional drawing of the fastener which incorporated the elastic body in the casing, Comprising: (a) is what the both ends of an elastic tube touches an inner wall, (b) does not touch. It is sectional drawing which shows the Example which incorporated two elastic tubes in one casing. It is a front view at the time of attaching a fastener to a pair of chain for jewelry. It is sectional drawing of the fastener which a casing isolate | separates so that attachment or detachment is possible. It is sectional drawing which shows the application example of the fastener which made the casing spherical.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Chain for jewelry 3a, 3b Hole 4 Elastic tube 4a Through-hole part 10 Fastener 20 Retaining ring 30 Fastening hook for fixation

Claims (6)

An elastic body made of an elastic tube having a through hole portion that can communicate with the pair of holes is incorporated in a casing made of a hollow body that forms a pair of holes at positions facing each other and communicates from the outside of the casing to the hollow portion. In the fastener for restraining the movement in the axial direction of the chain for jewelry inserted through the casing and the elastic body,
The casing is an oval in which a longitudinal elastic tube is built in an opening provided in a longitudinal pipe and then the diameter of the opening of the pipe is reduced to form the pair of holes and the elastic tube does not come out. Made of a shaped casing,
The outer wall of the elastic tube is not pressed against the inner wall of the hollow portion of the casing, and the elastic tube turns around the through hole between the inner wall of the hollow portion of the casing and the outer peripheral wall of the side surface of the elastic tube. Possible gaps are formed,
The fastener according to claim 1, wherein the elastic tube can be swung in the casing in conjunction with the jewelry chain when the jewelry chain is twisted. The diameter of the outer diameter of the elastic body is set longer than the diameter of the hole in the casing, and the diameter of the through hole is set shorter than the diameter of the hole in the casing. The fastener according to 1. The fastener according to claim 1 or 2, wherein the elastic tube is formed of a cylindrical body having a circular cross section, an elliptical cross section, or a polygonal cross section. A slide of a chain for jewelry comprising a chain for jewelry and a fastener that contains an elastic body in a casing made of a hollow body and restrains movement in the axial direction of the chain for jewelry inserted through the casing and the elastic body Structure,
The fastener is described in any one of claims 1 to 3,
A sliding structure of a chain for personal belongings, wherein the chain penetrates the casing of the fastener and is elastically held by the elastic body. 5. The sliding structure for a chain for personal belongings according to claim 4, wherein the length of the ring formed by the chain is adjustable by a fastener. 5. The sliding structure for a chain for personal belongings according to claim 4, wherein the attachment position of the fastener with respect to the chain is adjustable.

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