JP3128830U - Accessories for jewelry - Google Patents

Abstract

An object of the present invention is to improve the workability of manufacturing and assembling, as well as to reduce the number of assembling steps and the number of assembling parts and reduce the product cost.
A fastener for jewelry comprising a male member A and a female part B that can be detachably latched on the male member A. The male member A has a hemispherical part formed on a metal plate 1 by drawing. 4a and neck 4b are provided with a fitting protrusion 4, and the female member B is allowed to forcibly insert the hemispherical part 4a of the fitting protrusion 4, and is locked to the neck 4b after the insertion. It has a non-circular spring 14.
[Selection] Figure 4

Description

  The present invention relates to a hook for a jewelry to be attached to a necklace, a bracelet or other belts.

  At both ends of the necklace and the bracelet, a clasp for jewelry is attached to hold the necklace and the bracelet in an endless belt shape. A large-sized thing cannot be used for this attachment fastener for appearance, and length is 6 mm-8 mm, for example, and a width | variety makes a fine form, for example, 3 mm-5 mm.

  Therefore, it is possible to hold this with the fingertip and hook the hook-type hooks at both ends behind each other, or to screw the male threaded portion of one metal fitting into the female screw hole of the other metal fitting. However, there is a problem in that the latching operation is not convenient and the latching operation takes too much time.

On the other hand, the latch for the accessory is a ring-shaped female member having a relatively thick thickness in which a male member in which a fitting protrusion is formed and a through hole having a diameter sufficient to fit the fitting protrusion is formed. Has been proposed (see Patent Document 1). In this fastener for jewelry, a concave groove is provided in the inner wall of the through hole of the ring-shaped female member, a notch spring is inserted into the concave groove, and a male fitting protrusion is inserted into the through hole of the female part. In addition, the neck of the fitting protrusion can be held by the spring repulsive force. Therefore, it is possible to improve the ease of the latching operation in the finely-shaped accessory latch and to perform it quickly.
Japanese Utility Model Publication No. 55-42731

  However, as described above, it is extremely difficult to form a concave groove in the inner wall of the ring-shaped female portion of the fine latch as described above. The work of inserting the spring was also extremely difficult. As a result, there is a problem that the manufacturing efficiency of the fastener for jewelry is poor and the cost is unavoidable.

  The present invention has been made by paying attention to the conventional problems as described above, and can improve the workability of manufacturing and assembling, reduce the number of assembling steps and assembling parts, and reduce the product cost. It is an object of the present invention to provide a fastener for jewelry that can realize the above.

  In order to achieve the above object, a fastener for accessory according to the present invention is a fastener for accessory comprising a male member and a female part that can be detachably attached to the male member, and the male member Has a fitting protrusion in which a hemispherical part and a neck part are connected to a metal plate by drawing, and the female member allows forcible insertion of the hemispherical part of the fitting protrusion, and It has a non-circular spring for locking the neck after insertion.

  With this configuration, the inner diameter of the cut-off spring is expanded against the contraction action when the hemisphere portion of the fitting protrusion is forcibly inserted due to the elastic contraction action of the inner diameter of itself. Therefore, the insertion is permitted, and after insertion, the neck is held so that the neck does not come off due to the contraction action. In addition, since the fitting protrusion is integrally formed on the metal plate by drawing, the hemispherical portion and the neck portion can be formed easily, quickly and at low cost in one step.

Moreover, in the fastener for accessory according to the present invention, the metal plate constituting the male member is made of brass.
With this configuration, since lead is not included in the metal material of the male member, it is possible to effectively avoid the influence on human health and the environment.

In addition, the fastener for jewelry according to the present invention is characterized in that a small hole for discharging the plating solution is provided at the top of the fitting protrusion.
With this configuration, it is possible to avoid the plating liquid remaining in the fitting protrusion after the plating process, and it is possible to avoid deterioration of the surface finish state due to plating.

  According to the latching device for jewelry of the present invention, it is possible to reduce the number of assembling steps and the number of assembling parts and reduce the product cost, and the fitting protrusion by the elastic contraction action of the inner diameter of the non-circular spring It is possible to ensure both the insertion of the hemispherical part possessed by and the holding of the cervical part continuing to the hemispherical part.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view of a male member A that constitutes a clasp for jewelry according to an embodiment of the present invention, FIG. 2 is a plan view of a female member B that also constitutes a clasp for jewelry, and FIG. FIG. 4 is a sectional view showing a latching structure of a male member and a female member, FIG. 5 is a plan view of a case body constituting the female member, and FIG. 6 is a sectional view of the case body. FIG. 7 is a plan view of the ring plate constituting the female member.

  An embodiment of the present invention is a jewelry accessory latch comprising a male member and a female part detachably latchable on the male member, wherein the male member is drawn by drawing. The metal member has a fitting protrusion in which a hemispherical part and a neck part are connected to each other, and the female member allows forcible insertion of the hemispherical part of the fitting protrusion, and the neck part is inserted after the insertion. It is the structure which has the circular spring which latches.

In FIG. 1, the male part A is composed of a long metal plate 1 having one end formed in a small circular arc shape and the other end formed in a large circular arc shape. And an attachment hole 3 for attaching a chain 2 or a string constituting the bracelet.
On the side of the large-diameter arcuate portion, a fitting protrusion 4 is provided which is protruded by drawing the portion. The metal plate 1 is made of a material that does not contain lead, which is harmful to health, here brass. This brass is soft due to the nature of the material and easy to process, but is particularly suitable for drawing.

  As shown in FIG. 3 in an enlarged manner, the fitting protrusion 4 is formed in a form in which a hemispherical portion 4a bulging toward the distal end and a neck portion 4b having a smaller diameter are continuous. A small hole 5 penetrating the inside and outside of the hemispherical portion 4a is formed at the top of the hemispherical portion 4a. The small holes 5 are plated to prevent the plating liquid that has entered the fitting protrusions 4 from remaining after the plating process when the entire male part A is plated, such as gold plating. Has a liquid discharge function.

  On the other hand, the female part B has a case body 8 as shown in FIGS. The case body 8 includes a bottom plate 6 and a rising piece 7 connected to the peripheral edge of the bottom plate 6 so as to rise upward. An opening 7 a for projecting an accessory attachment handle for a ring plate, which will be described later, from the inside to the outside of the case body 8 is formed in a part of the rising piece 7.

  A circular through-hole 9 is provided at the center of the bottom plate 6, and the through-hole 9 is opened in a shape and size that allows the hemispherical portion 4a to be freely inserted. The case body 8 constituting the female member B is also made of a metal plate like the male member A, and the surface is plated similarly to the above.

  In the case body 8, a ring plate 10 as shown in FIG. 7 is mounted as shown in FIG. The ring plate 10 is provided with a through hole 11 having a diameter larger than that of the through hole 9 at the center, and a jewelry accessory handle 12 is integrally projected from a part of the outer periphery. Furthermore, the attachment hole 13 for attaching the chain and the string which comprises a necklace and a bracelet is provided in the front-end | tip part of this accessory attachment pattern 12. As shown in FIG.

  Further, on the bottom portion 6 of the case body 8 and inside the through hole 11 of the ring plate 10, a notch-shaped spring 14 that is concentric with the shaft through which the through hole 9 communicates is accommodated. Yes. The cut-out spring 14 is a ring body of elastic metal wire cut at one place, and normally the hemispherical portion 4a of the fitting protrusion 4 is forced to the inner diameter portion of the cut-out spring 14. Can be expanded by inserting.

  On the other hand, the inner diameter portion of the circular spring 14 contracts after the hemispherical portion 4 a is inserted, and is locked or held by the neck portion 4 b of the fitting protrusion 4. For this reason, the hemispherical portion 4a of the fitting protrusion 4 is not freely removed from the inner diameter portion. Further, the outer diameter of the non-circular spring 14 is set to an appropriate size so as not to be freely removed from the through hole 9.

  A ring-shaped (washer-shaped) cover plate 15 is placed on the ring plate 10. The cover plate 15 is formed with a through hole 16 concentrically with the through hole 9 and having the same diameter in the central portion. The surface of the cover plate 15 is also subjected to the same plating treatment as described above.

  Therefore, in the gap surrounded by the cover plate 15, the bottom portion 6 of the case body 8, and the inner peripheral surface of the through hole 11 in the ring plate 10, the notched spring 14 is accommodated so as to be expandable and contractible. Yes. Further, the cover plate 15 is fixed to the case body 8 by bending the upper end edge 7b of the rising piece 7 of the case body 8 toward the inner diameter side.

  In the latching device for jewelry thus configured, when the male member A and the female part B are connected (connected), the fitting protrusion 4 of the male member A is used as the case body constituting the female member B. 8 is inserted from the side of the through-hole 9 into the inner periphery of the ring-shaped spring 14 (ring hole). In response to this insertion operation force, the spherical body 4a of the fitting protrusion 4 enters so as to forcibly expand the inner circumference of the cut-off spring 14. The spherical body 4 a further penetrates the inner periphery and projects out of the case body 8 through the through hole 16 of the cover plate 15.

  For this reason, as shown in FIG. 4, the cut-off spring 14 is in a contracted form facing the vicinity of the neck 4 b of the fitting protrusion 4, so that the hemispherical part 4 a is formed inside the cut-off spring 14. From the lap, you will not be able to pull out freely unless external force is applied. Therefore, both ends of the chain or the like connected to the male member A and the female part agent B as described above can be easily connected.

  In the present embodiment, the fitting protrusion 4 has the hemispherical portion 4a and the neck portion 4b formed at a time and integrally by drawing the metal plate 1. For this reason, it is possible to omit the conventional step of crimping a spherical member prepared separately from the metal plate, and to avoid an increase in cost due to an increase in the number of parts used.

  The male member A and the female part B are separated from each other by forcibly pulling out the hemispherical part 4a of the fitting protrusion 4 from the inner peripheral part of the circular spring 14 while picking them with the fingers of both hands. Just operate. As a result, the inner circumference of the non-circular spring 14 is temporarily forcibly expanded, and the hemispherical portion 4a penetrates through the inner circumference and is easily and lightly separated.

  Thus, in this embodiment, it is a fastener for jewelry that includes a male member A and a female member B that can be detachably latched on the male member A, and the male member A is drawn by drawing. The metal plate 1 has a fitting protrusion 4 in which a hemispherical part 4a and a neck part 4b are connected to each other, and the female member B allows forcible insertion of the hemispherical part 4a of the fitting protrusion 4, and By adopting a configuration having the notched spring 14 for locking the neck 4b after insertion, the workability of manufacturing and assembly can be improved, the number of assembly steps and the number of parts to be assembled, and the product cost can be reduced. Can be realized.

  The clasp for jewelry of the present invention can be formed integrally by drawing a male member using a single plate material, so that the workability of manufacturing and assembling can be improved and the number of assembling steps and the number of assembling parts can be reduced. In addition, it has the effect of realizing reduction in product cost, and is useful for a fastener for jewelry attached to a necklace, a bracelet, and other belts.

It is a top view which shows the male member of the latching tool for jewelry by embodiment of this invention. It is a top view which shows the female member of the fastener for jewelry by embodiment of this invention. It is a longitudinal cross-sectional view of the male member shown in FIG. It is a longitudinal cross-sectional view which shows the latching tool for jewelry by embodiment of this invention. It is a top view of the case body shown in FIG. It is a longitudinal cross-sectional view of the case body shown in FIG. It is a top view of the ring board shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Metal plate, 4 ... Fitting protrusion, 4a ... Hemisphere part, 4b ... Neck part, 5 ... Small hole, 6 ... Bottom plate, 7 ... Standing piece, 8 ... Case body, 9, 11, 16 ... Through-hole, DESCRIPTION OF SYMBOLS 10 ... Ring plate, 12 ... Trinket attachment pattern, 14 ... Missing circular spring, 15 ... Cover plate

Claims (3)

A fastener for jewelry comprising a male member and a female part that can be detachably latched on the male member,
The male member has a fitting protrusion in which a hemispherical part and a neck part are connected to a metal plate by drawing,
The female accessory has a notch-like spring that allows forcible insertion of the hemispherical part of the fitting protrusion and that locks the neck after the insertion.   2. The fastener for jewelry according to claim 1, wherein the metal plate constituting the male member is made of brass.   2. The fastener for jewelry as set forth in claim 1, wherein a small hole for discharging a plating solution is provided at the top of the fitting protrusion.

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