JP2008307305A - Clasp for ornament - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive clasp for ornaments with easier operability. <P>SOLUTION: The clasp for ornaments includes: a pin metal fixture in which an inserting part 41 is formed at its tip with an engaging part 42 behind the inserting part while a connection part with an ornament is provided at its rear end; and a grasping metal fixture 20 which has the first vessel-like component body 21 with a guide part where to get the second component body 22 fitted into and the second lid-like component body 22 normally fitted into the guide part of the first component body 21 at a prescribed interval from the first component body 21 pivoted and has a hollow housing with a spring member energized in the direction of opening it so arrayed between the first and second component bodies 21 and 22 as to make it openable or closeable. An insertion part of the pin metal fixture is formed at the end face on any one side of the first and second component bodies 21 and 22 while a retaining part having a port for the insertion of the pin metal fixture is so formed on the other side as to let it communicate with the inserting part 41. Thus, the spring member 24 works to get the engaging part 42 of the pin metal fixture 11 engaged with the retaining part by its elasticity to lock them from slipping off. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a connecting metal fitting called a clasp used for a chain jewelry such as a pearl necklace or a ring jewelry such as a chain necklace.

Conventionally, as a connecting tool used for pearl jewelry such as a pearl necklace, at the tip as seen in Japanese Patent Laid-Open No. 2000-316616 (see cited reference 1) and Japanese Patent Laid-Open No. 2001-309807 (see cited reference 2). A head is formed, an engagement part is provided at the rear of the head, a male metal fitting having a connection part with a accessory at the rear end, a lid with an open bottom, and a bottom with an open top The body is formed of a hollow box shape that pivotally supports both side wall portions and is provided with a spring member that is biased in the closing direction so that the body can be opened and closed. A female fitting provided with a connecting portion with an accessory on the opposite end surface, and an engaging portion with the engaging portion is formed on one or both of the lid and the bottom body. There has been proposed a coupling fitting for jewelry composed of
JP 2000-316616 A JP 2001-309807 A

However, in the above-mentioned connecting metal fitting, the lid and the bottom body are sandwiched between fingers by the pivots attached between the both side wall portions at a substantially intermediate portion between the lid and the bottom body. When releasing the engagement between the male metal fitting and the female metal fitting, it was necessary to sandwich one side of the support shaft with a finger.
In that case, coupled with the fact that the connecting bracket is a very small part, the operation of releasing the engagement between the male bracket and the female bracket by sandwiching the lid and the bottom with one finger on one side of the support shaft is troublesome, In particular, there is a problem that it takes much time and effort when it is necessary to operate the back of the neck.

An object of the present invention is to provide a connecting fitting for jewelry that is very easy to operate at the time of wearing, and has a simple structure, is easy to assemble, and is low in cost. The purpose is to provide.

In order to achieve the above object, the invention relating to the connecting fitting for jewelry according to claim 1 is characterized in that an insertion portion is formed at the tip, an engagement portion is provided at the rear of the insertion portion, and an accessory is provided at the rear end. A pin-shaped metal fitting provided with a connecting portion, a container-like first structure having a slightly small-diameter guide portion into which the second structure is fitted by retreating the surface of the open end, and the guide of the first structure In the normal state, the first structural body and the lid-like second structural body fitted at a predetermined interval are axially attached to the end in the length direction, and the spring member for biasing in the opening direction is It comprises a holding metal fitting provided with a hollow housing that is disposed between the first structure and the second structure and can be opened and closed, and an end surface on one side of the first structure and the second structure An insertion part for the pin type metal fitting is formed, and a locking part having an insertion port for the pin type metal fitting is formed on the other side. When the engaging portion of the pin-shaped metal fitting is moved to the locking portion, the engaging portion of the pin-shaped metal fitting is engaged with the locking portion by the elasticity of the spring member. It is designed to prevent detachment and is characterized in that a connecting portion with an accessory is provided on the end surface opposite to the insertion portion.

The invention according to claim 2, wherein the insertion portion of the pin-shaped bracket formed on an end surface on one side of the first structure or the second structure is a pin-shaped bracket. By inserting a latching portion having a pin-shaped fitting insertion port projecting from the lid-like second structure into a notch portion formed at an appropriate position of the insertion tube, the pin-type fitting At the stage when the engaging part moves to the notch part, the engaging part protruding from the lid-like second structure engages with the engaging part of the pin-type metal fitting to prevent it from coming off. Also features.

4. The invention according to claim 3, wherein the spring member biased in the opening direction has coil portions on both sides in the width direction, and the clip-shaped tip is connected to the coil portions on both sides, and the first structure body has a clip shape. And it is comprised so that it may abut against a 2nd structure and may be urged | biased in an opening direction.

According to the connecting fitting for jewelry according to the present invention, it is possible to connect an annular accessory such as a necklace by simply inserting the pin-type fitting into the holding fitting, and it can be opened simply by pressing the holding fitting regardless of its position. Therefore, the operability becomes very easy.
Further, since the structure is very simple, it is possible to greatly reduce the size, and it is possible to provide a connecting fitting for jewelry that is low in cost.
In addition, the second structure formed by retreating the surface of the open end of the container-like first structure is inserted into the surface of the guide part with a small diameter. Etc., and there is no possibility that the decorative value is impaired and the commercial value is reduced as compared with the conventional example which must be stamped on the surface of the connecting fitting for jewelry.

Hereinafter, the connecting fitting for jewelry according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing one embodiment of a connecting fitting for jewelry according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a container-like first structure and a lid-like second structure constituting the holding fitting. 4 is a developed view of the disassembled state, FIG. 5 is a sectional view of the disassembled state, FIG. 6 is a perspective view of the pin-type metal fitting, and FIG. 7 is a stage of inserting the pin-type metal fitting into the holding metal fitting. FIG. 8 is a cross-sectional view of a state where the pin-type metal fitting is attached to the holding metal fitting.

As shown in FIG. 1 to FIG. 6, the jewelry fitting 10 according to the present embodiment is composed of a pin-shaped metal fitting 11 made of a round bar and a holding metal fitting 20 made of a hollow housing. It is connected to both ends of a jewelry such as a necklace chain, and has a ring shape to connect them to wear.
As shown in FIGS. 3 to 5, the holding metal fitting 20 can be opened and closed by attaching a container-like first structure 21 and a lid-like second structure 22 by a support shaft 23 at the ends thereof. It consists of a hollow housing, and a spring member 24 is disposed between the first structure 21 and the second structure 21, and is normally biased in the opening direction.

More specifically, the container-like first structure 21 is formed with a slightly small-diameter guide portion 25 into which the second structure 22 is fitted by retreating the surface of the open end, and the lid-like second structure 21 is formed. The structure 22 is slidably fitted outside the guide portion 25.
On the surface of the guide portion 25, a mark such as a trademark, a display indicating a material, and a mark 26 such as a commemorative character can be provided.

An insertion portion 27 for the pin-type metal fitting 11 is formed on the end face of the holding metal fitting 20 on one side of the hollow housing. The container-shaped first structure 21 is provided with an insertion cylinder 31 having an inner diameter slightly larger than the outer diameter of the pin-type metal fitting 11 at the insertion portion 27 of the pin-type metal fitting 11. A notch 32 having a predetermined width is formed.
On the other hand, the lid-like second structure 22 has a ring-shaped locking portion 33 having an insertion port 34 for the pin-type metal fitting 11 at a position corresponding to the notch 32 of the container-like first structure 21. This locking portion 33 is fitted into the notch 32 of the first structure 21.

Here, as shown in FIG. 6, the pin-type metal fitting 11 forms an insertion portion 41 having a tapered main body made of a round bar at the tip, and a groove-like engagement portion 42 is formed behind the insertion portion 41. It is provided with a connecting portion 43 for attachment to the rear end. Necklace thread protruding from both ends of the pearl necklace or the like after thread assembly is inserted and fastened into the through hole of the annular connecting portion 43.

Therefore, as shown in FIG. 7, the tip of the pin-type metal fitting 11 is inserted toward the insertion portion 27 of the pin-type metal fitting 11 of the holding metal fitting 20 and the pin-type metal fitting 11 provided in the container-like first structure 21 is inserted. Push into tube 31. At that time, the ring-shaped locking portion 33 of the lid-like second structure 22 passes through the position of the notch portion 32, but the locking portion 33 is displaced in the opening direction by the biasing force of the spring member 24. Even so, the pushing force of the pin-shaped metal fitting 11 resists the elasticity of the spring member 24 and moves the locking portion 33 to a position where the pin-shaped metal fitting 11 can pass.

When the pin-type metal fitting 11 is pushed into the position shown in FIG. 8 as it is, the engaging portion 42 of the pin-type metal fitting 1 is moved to the notch 32 and protrudes from the lid-like second structure 22. The locking portion 33 is engaged with the engaging portion 42 of the pin-type metal fitting 11 by the elasticity of the spring member 24, so that the pin-type metal fitting 11 can be reliably prevented from being detached by the holding metal fitting 20.

In order to remove the pin-type metal fitting 11 from the holding metal fitting 20, it is only necessary to press against the elasticity of the spring member 24 across the first structure 21 and the second structure 21. At that time, the ring-shaped locking portion 33 of the lid-like second structure 22 moves to a position where the pin-type metal fitting 11 can pass, so that the locking portion 33 is removed from the engagement portion 42 of the pin-type metal fitting 11. The pin-type metal fitting 11 can be removed from the holding metal fitting 20 without any difficulty.

At the pivoting position, a protrusion 51 that passes through the support shaft 23 is inserted into the end of the container-like first structure 21, and the support shaft 23 is inserted into the side wall of the end of the lid-like second structure 22. A shaft hole 52 is formed. Then, by inserting the protrusion 51 between the side walls of the second structure 22 and inserting and fixing the support shaft 23, the container-like first structure 21 and the lid-like second structure 22 are supported by the support shaft 23. It is pivotally attached through 23 so that it can be opened and closed.
The other ends of the container-like first structure 21 and the lid-like second structure 22 are locked so as not to be opened by appropriate means. Examples of the locking means include performing through a retaining pin and an engaging claw penetrating both, and limiting the opening angle of the both at the position where the first support shaft 23 is attached.

The hollow housing of the container-like first structure 21 and the lid-like second structure 22 accommodates a spring member 24 made of a substantially U-shaped coil spring with the tips bent upward by 90 degrees. ing. The spring member 24 may be fixed in place in the hollow housing, or may be attached with play.

In any case, the container-like first structure 21 and the lid-like second structure 22 are pivotally mounted on the end side of the container-like first structure 21 via the support shaft 23, and the container-like first structure is mounted. A spring member 24 made up of a substantially U-shaped coil spring is housed in a hollow housing of 21 and a lid-like second structure 22.
In this way, the holding metal fitting 20 may be sandwiched at any position of the container-like first structure 21 and the lid-like second structure 22, and the container-like first structure 21 and the lid-like second structure are used. 22 can be pressed against the elasticity of the spring member 24.
Then, the ring-shaped locking portion 33 of the lid-like second structure 22 moves to a position where the pin-type metal fitting 11 can pass, and the locking portion 33 is moved from the engagement portion 42 of the pin-type metal fitting 11. The pin-type metal fitting 11 can be removed from the holding metal fitting 20 without any difficulty.

INDUSTRIAL APPLICABILITY The present invention can be applied to a coupling fitting for jewelry called a clasp used for a chain jewelry such as a pearl necklace or a ring jewelry such as a chain necklace.
In addition, the connecting fitting for jewelry of the present invention can be used not only for other pendants, brooches, and other accessories, but also for connecting fittings for decoration parts of spectacle frames, ornaments such as hearing aids, etc. Absent.
Further, by forming a predetermined motif pattern as shown in FIGS. 1 to 3 on both the container-like first structure and the lid-like second structure, the front and back surfaces can be decorated more highly. It is possible to provide a connecting fitting for jewelry that can be used as a part.

It is a top view which shows one Example of the coupling metal fittings for jewelry which concerns on this invention. It is the side view. It is a side view of the decomposition | disassembly state of the container-like 1st structure and cover-like 2nd structure which comprise a clamping metal fitting. It is an expanded view of this decomposition | disassembly state. It is sectional drawing of this decomposition | disassembly state. It is a perspective view of a pin type metal fitting. It is sectional drawing of the step of inserting a pin type metal fitting in a clamping metal fitting. It is sectional drawing of the state which mounted | wore the pin type metal fitting with the clamping metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connecting metal fitting 11 Pin type metal fitting 20 Holding metal fitting 21 Container-like 1st structure 22 Cover-like 2nd structure 23 Support shaft 24 Spring member 25 Guide part 26 Marking 27 Insertion part 31 Insertion cylinder 32 Notch part 33 Locking portion 41 Inserting portion 42 Engaging portion 43 Connecting portion 51 Projection 52 Shaft hole

Claims (3)

An insertion part is formed at the front end, an engagement part is provided at the rear of the insertion part, a pin-type metal fitting provided with a connection part to the accessory at the rear end, and the surface of the open end part is retracted to form the second structure A container-like first structure having a slightly small-diameter guide section that fits the body, and a lid-shaped first structure that is normally fitted in the guide section of the first structure with a predetermined distance from the first structure body. A hollow housing that is pivotably attached to the two structural bodies on the end side in the length direction and is arranged between the first structure and the second structure so that the spring member that biases in the opening direction can be opened and closed. The pin-type metal fitting is inserted into the end surface of one of the first structure and the second structure, and the pin-type metal fitting is inserted into the other side. A locking part having a mouth is formed so as to be able to communicate with the insertion part, and when the engaging part of the pin type metal fitting moves to the locking part The engaging part and the locking part of the pin-type metal fitting are engaged with each other by the elasticity of the spring member to prevent the pin-type metal fitting from coming off, and a connecting part to the accessory is provided on the end surface opposite to the insertion part. A connecting fitting for jewelry. The insertion portion of the pin-type metal fitting formed on the end surface on either one side of the first structure or the second structure comprises an insertion tube of the pin-type metal fitting, and a cut formed at an appropriate position of the insertion tube. When the engaging portion having the insertion port of the pin-type metal fitting protruding from the lid-like second structure is fitted into the notch, the lid-type metal fitting is moved to the notch and the lid is moved. The connecting fitting for jewelry according to claim 1, wherein a locking portion protruding from the second structure is engaged with the engaging portion of the pin-type fitting to prevent it from coming off. The spring member biased in the opening direction has a coil portion on both sides in the width direction, and the clip-shaped tip abuts against the first structure body and the second structure body so as to connect the coil portions on both sides in the opening direction. 3. The accessory fitting according to claim 1, wherein the attachment fitting is configured to be biased. 4.

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