JP2007301174A - Clasp for accessory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clasp for an accessory, which is easy to attach and detach, can be securely fastened, permits the length of the endless (annular) portion of an accessory to be adjusted to an optional length, and damages no appearance of the accessory. <P>SOLUTION: One end of a first arc member 11 forming a semicircular portion or more of a closed loop and provided with an accessory connecting portion 13 and one end of a second arc member 12 forming the remaining portion of the closed loop are connected by shafts, and an arc elastic piece 14 is fitted and supported along the entire inside periphery of the first arc member 11. The front projection 14d of the arc elastic piece 14 is made to project from the other end of the first arc member 11 and engagement concavities and convexities 14g are provided in the inside periphery side of the front projection 14d, the other end of the second arc member 12 is provided with an escape groove 12c to insert the front projection 14d of the elastic piece 14 and an engagement portion 12g to engage with the engagement concavities and convexities 14g, and a protrusion 12d for hooking is provided on the outside periphery. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fastener for jewelry, and in particular, necklaces (including those provided with a pendant top), bracelets, and the like formed by connecting jewels such as pearls and crystals in a chain form with threads and chains. The present invention relates to a fastener used to connect an accessory to an endless shape.

As a fastener to connect endlessly connected bracelet accessories such as necklaces and bracelets, conventionally, a pull ring or hook attached to one end of the bracelet accessory and a retaining ring or perforated plate attached to the other end are combined. The thing was common (for example, refer patent document 1).
JP 2000-210110 A

  FIG. 10 shows an example of a combination of a pull ring and a retaining ring. The pulling wheel 3 is provided with an arcuate slide pin 31 in an annular outer cylinder 30 partially having an opening 30a, and is urged to project and close the opening 30a by a spring (not shown). The slide pin 31 can be moved to a position where the opening 30a is opened by projecting the knob portion 32 to the outside through a slit (not shown) formed in the outer cylinder 30 and moving the knob portion 32 in the direction of the arrow. In this state, if the retaining ring 4 is inserted from the opening 30a and the knob portion 32 is released, the slide pin 31 returns to the original state by the biasing force of the spring and closes the opening 30a, so that the retaining ring 4 cannot be removed.

  Therefore, if the pull ring 3 is attached to one end 52a of the yarn 52 connecting the jewel 51 of the accessory 5 such as a necklace and the retaining ring 4 is attached to the other end 52b, the accessory 5 is connected to the pull ring 3 and the retaining ring 4. The both ends of the two can be connected to make them endless, or the connection can be released into one.

As shown in FIG. 11, the combination of the hook and the perforated plate has the hook 6 attached to one end 52a of the yarn 52 connecting the jewels 51 of the accessory 5 and the perforated plate 7 attached to the other end. Then, when the hook-shaped main body 60 is inserted into the hole of the perforated plate 7 while pushing down the leaf spring 61 that closes the opening 60a of the hook-shaped main body 60 of the hook 6 in the direction of the arrow, the plate spring 61 returns to the illustrated position. As a result, the perforated plate 7 cannot be removed. If the leaf spring 61 of the hook 6 is pushed down in the direction of the arrow with a finger, the opening 60a is opened and the perforated plate 7 can be pulled out.

The pulling ring 3 shown in FIG. 10 is a small part, and its knob portion 32 is further small. Therefore, the fingertip is hung on the pulling ring 32 and moved in the direction of the arrow together with the slide pin 31 against the biasing force of the spring. It was quite difficult to attach and detach the retaining ring 4 through the small opening 30a while keeping the state where the 30a was opened.
Further, the hook 6 shown in FIG. 11 is also a small part, and the work of attaching and detaching the perforated plate 7 while keeping the opening 60a open by pushing down the leaf spring 61 against the elastic force with the fingertip. It was very difficult.

  In addition, there is a case where it is desired to adjust the length of such an accessory according to a change in body shape, clothes to be worn, etc. However, the conventional fastener as described above connects both ends of the accessory to make it endless. I couldn't adjust the length. Therefore, there is a thing that puts a retaining ring in the middle of jewelry such as a necklace so that the length can be adjusted, but it can only be adjusted to a fixed length, and when the retaining ring in the middle is not used There was also a problem that the beauty was lost because jewels such as pearls came out and the retaining ring was visible. In addition, there is a risk that the connecting portion by the pulling ring, the hook, the retaining ring, or the perforated plate may impair the appearance of the accessory.

  The present invention has been made to solve these problems, and is easy to attach and detach, and can be securely coupled. Further, the length of the endless (annular) portion of the accessory can be arbitrarily adjusted, and the appearance is also impaired. It aims to provide a fastener for jewelry that is not.

  In order to achieve the above object, a fastener for jewelry according to the present invention comprises a first arcuate member that constitutes a half or more of a closed loop and is provided with an accessory connection part on the outer periphery, and a second that constitutes the remaining part of the closed loop. And an arc-shaped elastic piece made of a metal material having a spring property that is fitted to the first arc-shaped member along the entire inner circumference thereof.

  Then, one end of the first arc-shaped member and one end of the second arc-shaped member are axially attached so as to be rotatable relative to each other by an axis perpendicular to the surface forming the closed loop, and one end of the arc-shaped elastic piece The first arc-shaped member is supported by a pin in a direction parallel to the axis, and the other end of the arc-shaped elastic piece is connected to the closed loop from the other end of the first arc-shaped member. Projecting in the direction along the inner circumferential side of the projecting portion, and providing a relief groove for engaging the projecting portion of the arcuate elastic piece at the other end of the second arcuate member, An engaging portion is provided, and a projection for hooking is provided on the outer peripheral side of the other end portion.

The first arc-shaped member, the second arc-shaped member, and the arc-shaped elastic piece may be formed of a noble metal such as white gold. However, as for the arc-shaped elastic piece, it is natural to use a spring metal having a spring property.
Further, it is desirable that the first arcuate member constitutes about 2/3 of the entire circumference of the closed loop.
If a plurality of engaging irregularities are provided on the inner peripheral side of the projecting portion of the arc-shaped elastic piece at intervals in the direction along the closed loop, it is locked in two stages by the locking portion of the second arc-shaped member. Can do.

  In the fastener for jewelry according to the present invention, one end of an accessory such as a necklace is connected to the accessory connecting portion of the first arc-shaped member, the first arc-shaped member is pinched with a finger of one hand, and the other When the fingernail of the hand is hooked on the protrusion of the second arcuate member and pulled outward, the engagement between the engaging part of the second arcuate member and the engaging unevenness of the protruding part of the arcuate elastic piece is caused. As a result, the second arcuate portion rotates outwardly, and the end portion of the first arcuate member and the second arcuate portion that is not attached to the shaft is greatly opened. Therefore, when the jewels at arbitrary positions of the accessory are inserted and held in the inner peripheral part of the first arc-shaped member and rotated so as to push back the second arc-shaped part, the projecting part of the arc-shaped elastic piece becomes the second. It is inserted into the relief groove of the arc-shaped portion, and the engaging unevenness engages and is locked with the locking portion, so that the accessory cannot be removed, and can be endless (annular) of any size.

Of course, it is also possible to attach a retaining ring or a perforated plate to the other end of the accessory and insert it into the fastener to prevent it from coming off and connect both ends of the accessory.
As described above, the fastener for jewelry according to the present invention can be easily attached and detached easily and can be reliably coupled, and the length of the endless (annular) portion of the jewelry can be arbitrarily adjusted. Moreover, since it can be formed into a small ring shape, it is not conspicuous, and the appearance of the accessory is not impaired.

Preferred embodiments of the present invention will be specifically described below with reference to the drawings.
[First embodiment: FIGS. 1 to 4 and FIG. 9]
First, a first embodiment of a fastener for jewelry according to the present invention will be described with reference to FIGS. 1 to 4 and FIG. FIG. 1 is a plan view showing the appearance of the fastener for jewelry, FIG. 2 is an exploded perspective view showing its components, FIG. 3 is a cross-sectional plan view showing a locked state after assembly, and FIG. 4 shows its open state. FIG. FIG. 9 is a perspective view showing an example of the usage state.

  The fastener for jewelry 1 shown in FIG. 1 comprises a first arcuate member 11 having a closed loop half or more (a little less than 2/3 in the illustrated example) and provided with a jewelry connecting portion 13 on the outer periphery, and the rest of the closed loop. And a second arcuate member 12 constituting the portion (in the example shown, a little over 1/3). As shown in FIG. 2, the first arc-shaped member 11 is formed with an arc-shaped groove 11a dug in the radial direction along the entire inner circumference, and the groove 11a is made of a metal material having a spring property. An arcuate elastic piece 14 is fitted.

  A shaft hole 11b formed at one end of the first arc-shaped member 11 and a shaft hole 14b inside the two shaft holes 14b and 14c formed at the base end portion 14a where the width of the arc-shaped elastic piece 14 is increased; A shaft pin 15 is inserted into the arc-shaped elastic piece 14, and a base end portion 14a on which a locking claw 14h of the arc-shaped elastic piece 14 is formed is supported around the first arc-shaped member 11 to form a shaft hole 14c in the base end portion 14a. The part which protruded is protruded from the one end part of the 1st arc-shaped member 11 to the circumferential direction. Further, the shaft pin 16 is fitted into the shaft hole 11 c formed near the other end of the first arc-shaped member 11 and the shaft hole 14 f formed in the bulging portion 14 e from the tip protruding portion 14 d of the arc-shaped elastic piece 14. Thus, the bulging portion 14e of the arc-shaped elastic piece 14 is supported on the first arc-shaped member 11 so as to be slightly rotatable.

  The protruding portion of the base end portion 14a of the arc-shaped elastic piece 14 is fitted into the groove 12a formed at one end portion of the second arc-shaped member 12, and the shaft hole 12b formed at one end portion of the second arc-shaped member 12 is arc-shaped. The shaft pin 17 is fitted into the shaft hole 14c outside the base end portion 14a of the elastic piece 14, so that the one end portion of the second arc-shaped member 12 and the base end portion 14a of the arc-shaped elastic piece 14 can be rotated relative to each other. Link. Thereby, one end of the first arc-shaped member 11 and one end of the second arc-shaped member 12 can be relatively rotated by the shaft pin 17 in a direction perpendicular to the surface forming the closed loop via the arc-shaped elastic piece 14. It is attached to.

  Further, one end portion (base end portion 14 a) of the arc-shaped elastic piece 14 and an intermediate portion (bulged portion 14 e) in the longitudinal direction are respectively connected to the first arc-shaped member 11 by shaft pins 15 and 16 in a direction parallel to the shaft pin 17. The intermediate portion between the base end portion 14a and the bulging portion 14e is supported by a convex portion 11d provided in the groove 11a of the arc-shaped elastic piece 14. Furthermore, the tip protrusion 14d at the other end of the arc-shaped elastic piece 14 is protruded from the other end of the first arc-shaped member 11 in the direction along the closed loop, and an engagement unevenness 14g is provided on the inner peripheral side of the tip protrusion 14d. ing. In this example, two sets of engaging irregularities 14g are provided along the inner periphery.

  On the other hand, at the other end of the second arcuate member 12, as shown in FIG. 3 and FIG. 4, a latching part that engages the relief groove 12c for inserting the tip protruding part 14d of the arcuate elastic piece 14 and the engaging irregularity 14g. 12g, and a projection 12d for hooking is provided on the outer peripheral side of the other end.

The accessory connecting portion 13 provided on the outer peripheral portion of the first arc-shaped member 11 is formed in a hollow cup shape, and a support pin 18 is inserted in the diameter direction thereof. The accessory is connected to the support pin 18 by hooking the end of the yarn connecting the jewelry jewel of the accessory.
It is desirable that the first arc-shaped member 11, the second arc-shaped member 12, and the arc-shaped elastic piece 14 including the accessory connecting portion 13 are all formed of a noble metal such as white gold. However, the arc-shaped elastic piece 14 uses a spring having a spring property.

As shown in FIG. 1 and FIG. 3, the fastener 1 for jewelry is connected to the end of the second arcuate member 12 on the side having the projection 12 d at the end of the first arcuate member 11 provided with the accessory connection part 13. When pressed and the tip projecting portion 14d of the arc-shaped elastic piece 14 is released and completely inserted into the groove 12c, the ring-like shape having no opening is formed as a whole. At this time, the engaging unevenness 14g of the arc-shaped elastic piece 14 is engaged and locked with the locking portion 12g of the second arc-shaped member 12, and is not easily opened.
In this example, since two sets of engagement irregularities 14g are provided along the inner periphery, the engagement irregularities 14g near the tip first engage with the locking portion 12g and stop, and when the second arcuate member 12 is further pushed in Then, the next engaging irregularity 14g engages with the locking portion 12g, and a complete locked state is obtained.

  From this state, when the first arc-shaped member 11 is pressed with a finger of one hand while the projection 12d of the second arc-shaped member 12 is hooked with a fingernail of the other hand and pulled strongly, the arc-shaped elastic piece 14 is slightly The engagement unevenness 14g and the engaging portion 12g are bent to be disengaged, and the second arcuate member 12 is rotated largely in the direction of arrow A in FIG. A large opening is formed between the arc-shaped member 11.

  Therefore, as shown in FIG. 9, one end of a jewelry 5 in which a number of jewels 51 such as pearls are connected through a thread 52 is connected to the jewelry connecting part 13 of the fastener 1, and a retaining ring is connected to the other end of the jewelry 5. 4 is attached. Then, the fastener 1 is inserted through the retaining ring 4 with the second arcuate member 12 opened further than the state shown in FIG. 4, and then the second arcuate member 12 is closed and shown in FIG. 1 and FIG. 3. If it is made into a lock shape, both ends of the accessory 5 can be connected and made endless as in the prior art.

In this case, in the fastener 1 according to the present invention, the first arc-shaped member 11 and the second arc-shaped member 12 are largely opened, so that the retaining ring 4 can be easily attached and detached, and can be reliably coupled. Since 1 becomes a small ring shape, it does not stand out and does not impair the appearance of the accessory.
Further, since the first arc-shaped member 11 and the second arc-shaped member 12 are greatly opened, the space between the connected jewels 51 of the accessory 5 itself is inserted into the fastener 1 as shown in FIG. It can also be made into a locked state so that it may be pinched | interposed by the member 11 and the 2nd arc-shaped member 12. FIG. In this way, the accessory 5 can be connected endlessly at an arbitrary position, and the length of the endless portion can be arbitrarily adjusted. In addition, no special auxiliary member is required, and the structure is simple and unnoticeable.

The ratio of the length of the first arc-shaped member 11 and the second arc-shaped member 12 in the entire circumference of the closed loop is arbitrary, but the first arc-shaped member 11 is 2 / of the entire circumference of the closed loop as in this embodiment. It is desirable to configure about 3 in terms of operability and connection reliability.
Further, if a plurality of engagement irregularities 14g are provided at intervals in the direction along the closed loop on the inner peripheral side of the tip protruding portion 14d of the arc-shaped elastic piece 14 as in this embodiment, the second arc-shaped member 12 is provided. Since it is locked in two stages by the locking portion 12g, an operational feeling at the time of locking can be reliably obtained.

[Second Embodiment: FIGS. 5 to 8]
Next, a second embodiment of the fastener for jewelry according to the present invention will be described with reference to FIGS. FIG. 5 is a plan view showing the appearance of the fastener for jewelry, FIG. 6 is an exploded perspective view showing the components, FIG. 7 is a plan sectional view showing the locked state after assembly, and FIG. 8 shows the opened state. FIG. In FIG. 6, illustration of shaft pins corresponding to the shaft pins 15 to 17 shown in FIG. 2 of the first embodiment is omitted.

  The fastener for jewelry 2 shown in FIG. 5 comprises a first arcuate member 21 having a half or more of a closed loop (a little less than 2/3 in the illustrated example) and provided with a jewelry connecting portion 23 on the outer periphery, and the rest of the closed loop. And the second arcuate member 22 constituting the portion (in the illustrated example, slightly over 1/3) forms an egg-shaped ring. As shown in FIG. 6, the first arc-shaped member 21 is formed with an arc-shaped groove 21a dug in the radial direction along the entire inner circumference, and the groove 21a is made of a metal material having a spring property. An arcuate elastic piece 24 is fitted.

  And the shaft hole 21b formed in the one end part of the 1st arc-shaped member 21, and the shaft hole 24b inside the two shaft holes 24b and 24c formed in the base end part 24a where the width | variety of the arc-shaped elastic piece 24 became wide, A shaft pin 25 is inserted into the arc-shaped elastic piece 24, and the base end 24a on which the locking claw 24h of the arc-shaped elastic piece 24 is formed is supported around the first arc-shaped member 21 to form a shaft hole 24c in the base end 24a. The part which protruded is protruded from the one end part of the 1st arc-shaped member 21 in the circumferential direction. Further, a shaft pin 26 is fitted into a shaft hole 21 c formed near the other end of the first arc-shaped member 21 and a U-groove 24 f formed in a branching portion 24 e from the tip protruding portion 24 d of the arc-shaped elastic piece 24. The bulging portion 14e of the arc-shaped elastic piece 24 is supported on the first arc-shaped member 21 so as to be slightly rotatable.

  The protruding portion of the base end portion 24a of the arc-shaped elastic piece 24 is fitted into the groove 22a formed at one end portion of the second arc-shaped member 22, and the shaft hole 22b formed at one end portion of the second arc-shaped member 22 and the arc shape The shaft pin 27 is fitted into the shaft hole 24c outside the base end portion 24a of the elastic piece 24 so that the one end portion of the second arc-shaped member 22 and the base end portion 24a of the arc-shaped elastic piece 24 can be rotated relative to each other. Link. Thereby, one end portion of the first arc-shaped member 21 and one end portion of the second arc-shaped member 22 can be relatively rotated by the shaft pin 27 in a direction orthogonal to the surface forming the closed loop via the arc-shaped elastic piece 24. It is attached to.

  Further, one end portion (base end portion 24a) of the arc-shaped elastic piece 24 and a middle portion (branching portion 24e) in the longitudinal direction are supported by the first arc-shaped member 21 by shaft pins 25 and 26 in directions parallel to the shaft pin 27, respectively. Let Further, the tip protruding portion 24d at the other end of the arc-shaped elastic piece 24 is protruded from the other end portion of the first arc-shaped member 21 in the direction along the closed loop, and an engagement unevenness 24g is provided on the inner peripheral side of the tip protruding portion 24d. ing.

  On the other hand, as shown in FIG. 7 and FIG. 8, an escape groove 22 c for inserting the tip protruding portion 24 d of the arc-shaped elastic piece 24 and an engaging concave and convex portion 24 g are engaged with the other end of the second arc-shaped member 22. 22g, and a projection 22d for hooking is provided on the outer peripheral side of the other end.

The accessory connecting portion 23 provided on the outer peripheral portion of the first arc-shaped member 21 is formed in a hollow cup shape, and a support pin 28 is fitted in the diameter direction thereof. The accessories are connected to the support pins 28 by hooking the ends of the yarns connecting the jewelry jewels.
It is desirable that the first arc-shaped member 21, the second arc-shaped member 22, and the arc-shaped elastic piece 24 including the accessory connecting portion 23 are all formed of a noble metal such as white gold. However, as the arc-shaped elastic piece 24, a metal having a spring property is used.

  As shown in FIGS. 5 and 7, the fastener 1 for jewelry is also connected to the end of the second arcuate member 22 on the side having the protrusions 22 d at the end of the first arcuate member 21 provided with the accessory connector 23. When pressed and the tip projecting portion 24d of the arc-shaped elastic piece 24 is released and completely inserted into the groove 22c, an oval ring shape with no opening is formed as a whole. At this time, the engaging unevenness 24g of the arc-shaped elastic piece 24 engages and is locked with the locking portion 22g of the second arc-shaped member 22, and is not easily opened.

  From this state, when the first arc-shaped member 21 is pressed with a finger of one hand and the projection 22d of the second arc-shaped member 22 is hooked with a fingernail of the other hand and pulled strongly, the arc-shaped elastic piece 24 is slightly The engagement irregularity 24g and the engaging portion 22g are bent to be disengaged, and the second arcuate member 22 is rotated largely in the direction indicated by the arrow B in FIG. A large opening is formed between the arc-shaped member 21.

The method of using the fastener for jewelry 2 is the same as that described with reference to FIG. 9 for the fastener 1 for jewelry according to the first embodiment described above.
As described above, the ring shape, size, material, surface treatment (gloss / matte, etc.) of the fastener for jewelry according to the present invention can be changed as appropriate according to the jewelry used, the design, and the like.

  The fastener for jewelry according to the present invention can be applied to various accessories such as necklaces and bracelets that are connected in an endless manner. And this fastener is a small and simple structure, the appearance at the time of connection is good, and operability is also very good. In addition, since the length of the endless portion can be arbitrarily adjusted, wide use can be expected.

It is a top view which shows the external appearance of 1st Example of the fastener for jewelry by this invention. It is a disassembled perspective view which similarly shows the component. It is a plane sectional view which shows the locked state after the assembly | attachment similarly. It is a plane sectional view showing the open state similarly.

It is a top view which shows the external appearance of 2nd Example of the fastener for jewelry by this invention. It is a disassembled perspective view which similarly shows the component. It is a plane sectional view which shows the locked state after the assembly | attachment similarly. It is a plane sectional view showing the open state similarly. It is a perspective view which shows an example of the use condition of the fastener for jewelry by this invention. It is a perspective view which shows an example of the conventional fastener for jewelry. It is a perspective view which shows the other example of the conventional fastener for jewelry.

Explanation of symbols

1, 2: Jewelery fasteners 3: Pull ring 4: Retaining ring 5: Jewelery
6: Hook 7: Perforated plate
11, 21: First arc-shaped member 11a, 21a: Arc-shaped groove 11b, 11c, 21b, 21c: Shaft hole 11d: Convex part 12, 22: Second arc-shaped member 12a, 22a: Groove 12b, 22b: Shaft Hole
12c, 22c: Escape groove 12d, 22d: Protrusion 12g, 22g: Locking part 13, 23: Trinket connecting part 14, 24: Arc-shaped elastic piece 14a, 24a: Base end part 14b, 14c, 14f, 24b, 24c: Shaft Holes 14d, 24d: tip protrusions 14e: bulging portions 14g, 24g: engaging irregularities 14h, 24h: locking claws 24e: branching portions 15, 16, 17, 25, 26, 27: shaft pins 18, 28: support Pin 51: Jewel 52: Yarn

Claims (4)

A first arcuate member comprising a half or more of the closed loop and having an accessory connecting part on the outer periphery; a second arcuate member constituting the remaining part of the closed loop; and the entire inner circumference of the first arcuate member An arc-shaped elastic piece made of a metal material having a spring property fitted along
One end of the arc-shaped elastic piece is attached to one end of the first arc-shaped member and one end of the second arc-shaped member so as to be relatively rotatable by an axis in a direction perpendicular to a surface forming the closed loop. And an intermediate portion in the longitudinal direction are supported by the first arc member by pins in a direction parallel to the axis, and the other end portion of the arc elastic piece is moved from the other end portion of the first arc member to the closed loop. Projecting in the direction along which the projecting portion is provided with an engaging unevenness on the inner peripheral side of the projecting portion, and the relief groove for inserting the projecting portion of the arc-shaped elastic piece into the other end of the second arc-shaped member, and the engaging unevenness A fastener for jewelry, comprising: an engaging portion to be engaged; and a projection for hooking on the outer peripheral side of the other end portion.   2. The fastener for jewelry according to claim 1, wherein the first arc-shaped member, the second arc-shaped member, and the arc-shaped elastic piece are all formed of a noble metal such as white gold.   The fastener for jewelry according to claim 1 or 2, wherein the first arcuate member constitutes about 2/3 of the entire circumference of the closed loop. 4. The accessory according to claim 1, wherein a plurality of engaging irregularities are provided on the inner peripheral side of the projecting portion of the arc-shaped elastic piece at intervals in a direction along the closed loop. 5. Fasteners.

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