JP3017097U - Necklace fastening device - Google Patents

Abstract

(57) [Summary] [Purpose] In addition to improving the quality and commercial value of necklaces, T.S. P. Make it suitable for effective use according to O. [Structure] One end ball 1a and the other end ball 1b of the necklace A are provided with an engaging rod 3 and a locking device 4 which are engageable and disengageable, respectively, partially or wholly. [Effect] The quality and product value of necklaces can be improved with a stable and simple appearance. P. It can be effectively used according to O.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a fastening device for necklaces such as necklaces and bracelets.

[0002]

[Prior art]

 Conventionally, a necklace made of gold, silver, pearls, jewels, glass, beads, etc., made by connecting beads, strings, wires and beads together, or a pure gold, semi-cylindrical shape, Necklaces such as bracelets (bracelets), which are ornaments such as rings, chains, bands, etc., made of metal and chain type, rings with elaborate designs encrusted with jewelry, etc. It is an accessory that is indispensable for luxurious clothes.

[0003]

[Problems to be solved by the device]

 In this necklace, an endless ring-shaped necklace is used by connecting the ends of a necklace made up of pearls and other beads, by using a clasp, but the conventional clasp is a series of this endless ring-shaped necklace. Since there is an intervening seam at the seam, the clasp is naturally exposed to reveal that the seam is the seam. Therefore, it is easy to attach and detach the clasps during use, and it has a decorative design that makes the clasps look like necklace clasps and sprinkle with gems to make them luxurious. However, on the other hand, the joints of endless necklaces can be clearly seen, which may result in deterioration of quality and product value, or is simple. On the contrary, the quality value is deteriorated due to the lack of appearance, and further, T.I. P. There is a defect that it is not suitable for effective use depending on O. The present invention has been made in order to solve the above-mentioned conventional drawbacks, and the joints of necklaces can be improved in quality and commercial value due to the simple appearance with almost no visible joints of necklaces. Is easy, and T.S. P. It is an object of the present invention to provide a fastening device for necklaces suitable for effective use according to O.

[0004]

[Means for Solving the Problems]

 The present invention has been made in order to solve the above-mentioned problems, and its gist is to provide a pearl ball or other ball-shaped necklace which can be freely attached to and detached from the corresponding one-end ball and the other-end ball. Part of or the whole of the joint rod and the locking device are installed in the embedded type so that the joints of the fasteners are not visible to the outside when the both ends are connected. It is a device. Next, the present invention will be described in detail with reference to the following embodiments with reference to the drawings.

[0005]

【Example】

 First, A is a necklace in which a large number of pearls and other beads 1 are connected by ropes 2 in a string. Therefore, a part or all of the engaging rod 3 and the locking device 4 which can be engaged and disengaged are respectively installed in the corresponding one end ball 1a and the other end ball 1b of the necklace A in an embedded manner. The structure is such that the joint of the fastener B formed by the engaging rod 3 and the locking device 4 is not visible to the outside when they are connected. In the first embodiment shown in FIGS. 1 and 2, the engaging rod 3 and the locking device 4 have a male screw shaft 5 having a partially embedded male screw portion 5a and a nut 6 with a fully embedded female screw portion 6a screwed with the male screw shaft 5. The male screw shaft 5 and the nut 6 can be engaged and disengaged by screwing in and unscrewing. Next, in a second embodiment shown in FIGS. 3 and 5, the engaging rod 3 and the locking device 4 are provided with a partially embedded protruding shaft 7 having a protruding portion 7a on the outer periphery of the tip, a thick barrel 8a, and a split groove 8c. It is a completely embedded locking cylinder 8 consisting of a thin cylindrical portion 8b, and the protruding portion 7a is moved along the split groove 8c to move the protruding shaft 7 into and out of the locking cylinder 8 and rotate inside. Both can be engaged and disengaged. Further, in the third embodiment shown in FIGS. 4 and 5, the locking cylinder 8 of FIG. 5 has a spring 10 inserted in the inner hole 9 which is the large hole 9a of the other end 1b and the small hole 9b with the stepped portion 9c. The spring 10 is urged so that the locking cylinder 8 is in contact with the stepped portion 9c of the inner hole 9 in an impulsive pressure manner. Next, in a fourth embodiment shown in FIG. 6, the engaging rod 3 and the locking device 4 are composed of a partially embedded protruding shaft 11 having a tip protruding portion 11a, a thick cylindrical portion 12a, and a thin cylindrical portion 12b with a split groove 12c. It is an all-embedded locking cylinder 12 in which a spring 13 for urging the protruding shaft 11 to push outward is interposed. The projecting shaft 11 and the locking cylinder 12 can be engaged, locked and removed easily and properly. Further, in the fifth embodiment shown in FIG. 7, the engaging rod 3 and the locking device 4 are composed of the collet chuck 16 and the tightening cylinder 17 for tightening the partially embedded protruding shaft 14 and outer protruding shaft 14. Then, the protruding shaft 14 which is engaged by pushing the tightening cylinder 17 to the left against the spring 18 is locked by the tightening of the collet chuck 16 by the tightening cylinder 17.

[0006]

[Effect of device]

 The fastening device of the present invention is as described above, and since the joints of the fastener B are not visible to the outside when the both ends of the necklace are connected, there is no fluffiness, and it is always stable and simple. The quality of the necklace and the commercial value of the necklace can be improved, and the so-called T.S. P. It can be effectively used according to O. Further, in this invention, since the joint engagement rod 3 of the fastener device and the locking device 4 are rigidly connected, it is surprisingly easy to detect the joints during use, and the joints are also strong and stable. There is.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the first embodiment of the device of the present invention.

FIG. 2 is a view for explaining the use of the first embodiment of the device of the present invention.

FIG. 3 is an enlarged sectional view of a main part of a second embodiment of the device of the present invention.

FIG. 4 is an enlarged sectional view of a main part of a third embodiment of the device of the present invention.

FIG. 5 is an exploded view of the fasteners used in the second and third embodiments of the device of the present invention.

FIG. 6 is an enlarged cross-sectional view of the essential parts of a fourth embodiment of the device of the present invention.

FIG. 7 is an enlarged cross-sectional view of the essential parts of a fifth embodiment of the device of the present invention.

[Explanation of symbols]

 A Necklace B Fastener 1 Ball 1a One end ball 1b Other end ball 2 Cable 3 Engagement rod 4 Locking device 5 Male screw shaft 5a Male screw part 6 Nut 6a Female screw part 7,11,14 Projection shaft 7a, 11a Projection Part 8,12 Locking cylinder 8a Thick cylinder 12a Thick cylinder 8b, 12b Thin cylinder 8c.12c Split groove 9,15 Inner hole 9a Thick hole 9b Small hole 9c Stepped part 10,13 Spring 16 Collet chuck 16a Taper Part 16b Sliding 17 Tightening cylinder 18 Spring

Claims (6)

[Scope of utility model registration request] 1. A pearl ball or other sphere 1 is connected to a number of beads, or a corresponding one-end sphere 1a and the other-end sphere 1 of a single necklace A.
The engaging rod 3 and the locking device 4 which can be engaged and disengaged are respectively installed in part b in a manner so as to be embedded in b, so that the joint of the fastener B is not seen outside when both ends are connected. A fastening device for necklaces characterized by the above. 2. The fastening device for necklaces according to claim 1, wherein the engaging rod 3 and the locking device 4 are a partially embedded male screw shaft 5 and a fully embedded nut 6 screwed with the male screw shaft 5. 3. The engagement rod 3 and the locking device 4 are entirely embedded with a partially embedded protruding shaft 7 having a protrusion 7a on the outer periphery of the tip end, a thick cylinder 8a and a thin cylinder 8b with a split groove 8c. The fastening device for necklaces according to claim 1, which is the locking cylinder 8 of the above. 4. The locking cylinder 8 is slidably mounted in the inner hole 9 of the other end balls 1b with a spring 10 interposed therebetween.
Necklace fastening device. 5. The engagement rod 3 and the locking device 4 are provided at the tip projection portion 1.
It is a partially embedded protruding shaft 11 having 1a and a fully embedded locking cylinder 12 consisting of a thick cylinder 12a and a thin cylindrical portion 12b with a split groove 12c, and a spring for urging the protruding shaft 11 to push outward. Thirteen
The fastening device for necklaces according to claim 1, wherein: 6. A projecting shaft 14 embedded in two parts by an engaging rod 3 and a locking device 4, and a collet chuck 1 for tightening the projecting shaft 14.
The fastening device for necklaces according to claim 1, comprising 6 and a fastening cylinder 17.