JP2002209616A - Fastener for circular accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastener for a circular accessory which has an appreciably decorative structure capable of free design of the shape and size of a body part. SOLUTION: This fastener 1 for a circular accessory comprises a body part 2 and a locking element 3. The body part 2 comprises a base part 5, a leaf spring member 6 with one end 5a fixed for rising and lowering motion, a spring 7 as an urging means for urging elastic force of the leaf spring member 6, and a guide part 8 as a guiding means for guiding the locking element 3 to the leaf spring member 6. The locking element 3 is shaped into a pin, and the periphery of a pint portion 3b is provided with a circumferential locking groove 3c. The leaf spring member 6 has a curved surface 6c between the one end 6a and the other end 6b, and the curved surface 6c has an engaging portion 6d formed into a window punched in the leaf spring member 6 so as to elastically engage with and disengage from the locking groove 3c of the locking element 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener for an annular accessory such as a necklace, a bracelet, and an anklet.

[0002]

2. Description of the Related Art Conventionally, annular ornaments such as necklaces, bracelets, and anklets have been connected at their ends by fasteners. As a conventional clasp, a "clasp" described in JP-A-8-89320 is disclosed.
And a "locking body for a necklace chain" described in JP-A-9-215510.

As shown in FIG. 7, a stopper 21 described in JP-A-8-89320 has a base 22 and
It is composed of a connecting pin 23 and a stopper 24.
A connecting ring 22a is provided on the base 22, a connecting ring 23a is provided on the connecting pin 23, and an end (not shown) of the annular accessory is connected to the connecting ring 22a and the connecting ring 23a. Connecting pin 2
3, a notch 23c is formed at the tip 23b, and the notch 23c of the connecting pin 23 is formed at the tip 24a of the stopper 24.
An engagement portion 24b is formed to engage with. The base 22
The vertical insertion hole 22b and the horizontal insertion hole 22c
The stopper 24 is housed in the vertical insertion hole 22b, and the connecting pin 23 is inserted in the horizontal insertion hole 22c. A spring 25 for resiliently pushing the stopper 24 is accommodated in the depth of the vertical insertion hole 22b.
A locking portion 22d is provided in order to prevent the protrusion from being pushed out. When the connecting pin 23 is inserted into the horizontal insertion hole 22c,
The stopper 2 is pressed by the distal end 23 b of the connecting pin 23.
4 goes down. At this time, the engaging portion 24b also moves down, so that the distal end 23b of the connecting pin 23 enters the engaging portion 24b. After that, the stopper 24 is resiliently moved by the spring 25 and rises.
b engages with the notch 23c of the connecting pin 23. When the stopper 24 is pressed against the elastic force of the spring 25, the engaging portion 24b moves down together with the stopper 24.
The engaging portion 24b comes off the notch 23c.

As shown in FIG. 8, a locking body 31 (hereinafter simply referred to as a "locking body") for a necklace chain described in Japanese Patent Application Laid-Open No. 9-215510 has an upper half body 32 and a lower half body. The split body 33 is rotatably connected to a shaft 34, and a spring 35 is interposed therebetween. When the spring 35 is pressed by the pressing portion 32a provided on the upper half body 32, the upper half body 32 is
3, the one end 32b of the upper half body 32 opens to the one end 33a of the lower half body 33, so that the locking portion 36a provided at one end of the necklace chain 36 can be inserted ( FIG. 8B). And the pressing part 3
When the pressing of 2a is stopped, one end 32b of the upper half body 32 closes to one end 33a of the lower half body 33, so that the locking portion 36a is connected to the inner end 32c of the upper half body 32 and the lower half body. It is engaged by the inner end 33b of 33 (see FIG. 8A). Note that a locking portion 36b provided at the other end of the necklace chain 36 is fixed to the other end 33c of the lower half body 33.

[0005]

However, in the above-mentioned stopper 21, the stopper 24 and the spring 2 are not provided.
5 and the stroke length of the stopper 24 and the spring 25 must be secured. The vertical insertion hole 22
b and the horizontal insertion hole 22c had to be provided so as to vertically intersect each other in the base 22. Therefore, there has been a problem that the shape of the fastener is limited. There is also a problem that the size of the fastener is increased. Further, in the above-described locking body 31, since the main part is constituted by the upper half body 32 and the lower half body 33, there is a problem that the shape of the fastener is limited. There is also a problem that the number of constituent members increases. The clasp is a part of the ring-shaped accessory, and if the shape and size are restricted, the degree of freedom in design is lost, which is not preferable from the viewpoint of decorativeness. The present invention has been made in order to solve these problems, and an object of the present invention is to provide a clasp for a structural annular ornament having excellent decorativeness, which can freely design the shape and size of a main body. And

[0006]

According to a first aspect of the present invention, there is provided a fastener for an annular accessory comprising a main body portion and a locking device, and the main body portion and the locking device are connected to an end of the annular accessory. Is provided, and the end of the annular accessory is connected to each other by engagement of the main body portion with the engaging tool. The department is
A leaf spring member having one end fixed so as to be capable of raising and lowering is provided, and the leaf spring member is formed with an engaging portion which is elastically engaged with and disengaged from the notch groove of the locking member. With such a configuration, the fastener of the annular accessory is configured such that the engagement between the engaging portion formed on the leaf spring member of the main body portion and the notch groove formed on the engaging device causes the end of the annular accessory to be closed. The parts can be connected. Since the engagement mechanism on the main body side is composed of the leaf spring member and the engagement portion formed on the leaf spring member, the number of parts of the main body portion is reduced. Further, the size of the main body can be reduced. Therefore, the shape and size of the main body can be freely designed, so that the decorativeness of the clasp of the ring-shaped ornament can be enhanced.

Further, in the fastener for an annular accessory according to a second aspect of the present invention, the engaging portion is formed by punching an inclined surface of the leaf spring member. With this configuration, the engagement portion can be provided on the leaf spring member, so that the number of parts of the main body can be reduced.

A third aspect of the present invention is the fastener for an annular accessory, wherein the main body has an urging means for urging the elastic force of the leaf spring member. With this configuration, the elastic force of the leaf spring member can be urged, so that the main body portion and the locking member can be reliably engaged.

A fourth aspect of the present invention provides the clasp for an annular accessory, wherein the main body includes guide means for guiding the locking tool to the leaf spring member. With this configuration, the locking tool can be reliably guided to the leaf spring member, so that the locking tool can be easily engaged with the main body.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, the configuration of the clasp 1 (hereinafter, simply referred to as “clamp”) of the annular accessory according to the embodiment of the present invention will be described. FIGS. 1A and 1B are external views showing the fastener 1, wherein FIG. 1A is a plan view and FIG. 1B is a front view. 2A is a cross-sectional view taken along the line AA in FIG. 1A, and FIG.
FIG. 4 is a cross-sectional view taken along line B. FIG. 3 is an exploded perspective view of the fastener 1.

As shown in FIG. 1, the fastener 1 comprises a main body 2 and a stopper 3. The main body 2 has a connecting ring 2
a is provided, and one end 4a of the necklace 4 is attached to the connecting ring 2a.
Is attached. Further, a connecting ring 3a is provided on the locking member 3, and the other end 4b of the necklace 4 is attached to the connecting ring 3a. Therefore, the end 4a and the end 4b of the necklace 4 can be connected in the fastener 1 by the engagement between the main body 2 and the locking device 3.

As shown in FIG. 2 and FIG.
Are a base 5, a leaf spring member 6, a spring 7 for urging the elastic force of the leaf spring member 6, and a guide portion for guiding the locking member 3 to the leaf spring member 6. And 8.

[0013] The base 5 is an integrally molded casting,
A pair of brackets 5a, 5a for holding the guide portion 8,
A spring holding portion 5b for holding the spring 7 and an opening 5c into which the locking tool 3 is inserted are provided (see FIG. 3). On the opposite side of the opening 5c, the connecting ring 2a is protruded.

The leaf spring member 6 is bent from a metal plate, and has an inclined surface (a concave curved surface 6c in this embodiment) inclined between the one end 6a and the other end 6b with respect to the engaging / disengaging direction of the locking member 3. ). By forming the inclined surface as a curved surface, the curved surface 6c is
It can smoothly contact the distal end portion 3b of the locking member 3 formed in a spherical shape described later. The leaf spring member 6 is arranged on the base 5 such that one end 6a is located on the opening 5c side of the base 5 and the other end 6b is located on the opposite side of the opening 5c. One end 6a of the leaf spring member 6 is fixed on the substrate 5 so that the other end 6b side can be raised. The curved surface 6c of the leaf spring member 6 has a distal end 3b
An engaging portion 6d that engages with the locking groove 3c formed in the above is formed into a substantially rectangular window shape by punching out the leaf spring member 6. The engaging portion 6d engages the locking member 3 at the lower edge of the window. In addition,
When the leaf spring member 6 is in a normal state, the curved surface 6c abuts on the distal end portion 3b of the locking device 3, and when the curved surface 6c is pressed by the locking device 3 and descends, the curved surface 6c engages with the engaging portion 6d. It is provided so that the tip 3b of the stopper 3 can be inserted. Below the engaging portion 6d, when the distal end portion 3b of the locking device 3 is inserted into the engaging portion 6d, a rear end side end surface 3e of a locking groove 3c of the locking device 3 described later.
Is formed into a semicircular window shape by punching out the leaf spring member 6. The locking portion 6e locks the rear end surface 3e of the locking groove 3c of the locking tool 3 at the upper edge of the window. Note that the shape of the locking portion 6e is not particularly limited. A fitting hole 6f, which fits into a projection 8b of the guide portion 8 described later, is formed at one end 6a of the leaf spring member 6 so as to fit the shape of the projection 8b of the guide portion 8 by punching the leaf spring member 6. Formed.

The spring 7 is a coil spring. The spring 7 is held by the spring holding portion 5b of the base 5 and is interposed between the base 5 and the other end 6b of the leaf spring member 6, and connects the other end 6b of the leaf spring member 6 to the other end. It bounces upward. That is, the spring 7 urges the elastic force of the leaf spring member 6 itself. Therefore, even when the resilience of the leaf spring member 6 is weakened and weakened due to metal fatigue, the other end 6b of the leaf spring member 6 can always be repelled upward by the spring 7. Note that an elastic body such as rubber can be used instead of the spring 7.

The guide portion 8 includes a bracket 5a on the base 5,
5a, it is arranged on one end 6a side of the leaf spring member 6 so as to be in contact with the curved surface 6c of the leaf spring member 6. When fixing the guide portion 8 to the brackets 5a, 5a, the body of the guide portion 8 is press-fitted between the brackets 5a, 5a, and the guide portions are formed by locking claws 5d, 5d formed on the upper portions of the brackets 5a, 5a. The body of No. 8 is locked. The guide part 8
A guide hole 8a into which the locking member 3 is inserted;
Guides the locking member 3 to the curved surface 6c of the leaf spring member 6. The surface of the guide portion 8 facing the curved surface 6c of the leaf spring member 6 has a shape adapted to the shape of the curved surface 6c of the leaf spring member 6,
That is, as can be seen from FIG. 2 (a), the curved surface 6c is formed in a convex shape with a radius of curvature substantially the same as the radius of curvature. In addition, a projection 8b is provided below the guide section 8, as shown in FIG. The protrusion 8b is fitted in a fitting hole 6f formed in one end 6a of the leaf spring member 6 to fix the one end 6a of the leaf spring member 6. By configuring the guide portion 8 as described above, the guide portion 8 is
The leaf spring member 6 is fixed to the guide portion 8. Further, the spring 7 is fixed to the base 5. Therefore, a cover for covering the base 5 is not required. In addition, a lid that covers the base 5 can be provided as necessary. In this case, the lid is exposed at the other end 6b of the leaf spring member 6 and at the other end 6b.
b must be formed in a shape that can be pressed.

The locking member 3 has a pin-like shape. The tip 3b of the locking device 3 is provided with a guide hole 8 of the guide portion 8 of the locking device 3.
The tip is formed in a spherical shape in order to facilitate insertion into a. In addition, a locking groove 3c is formed on the peripheral surface of the distal end portion 3b in the circumferential direction. In addition, at the rear end 3d of the locking device 3,
The connecting ring 3a described above is provided.

Next, a method for engaging and disengaging the main body 2 and the locking member 3 will be described. FIG. 4 is an explanatory diagram of a method of engaging the main body 2 and the locking tool 3. FIG. 5 is an explanatory diagram of a method of releasing the engagement between the main body 2 and the locking tool 3.

The method of engaging the main body 2 with the locking member 3 is as follows.
This will be described with reference to FIG. First, as shown in FIG. 4A, the distal end 3 b of the locking member 3 is inserted into the guide hole 8 a of the guide portion 8.
Insert Subsequently, as shown in FIG. 4B, when the locking member 3 is further inserted in the direction of arrow a in the figure, the distal end portion 3b of the locking member 3 causes the elastic force of the leaf spring member 6 itself and the force of the spring 7 to change. Pressing the curved surface 6c of the leaf spring member 6 against the elastic force, the curved surface 6c
Is lowered. At this time, since the engaging portion 6d formed on the curved surface 6c also descends, the distal end portion 3b of the locking member 3 is moved to the engaging portion 6d.
d. When the distal end portion 3b of the locking member 3 is inserted into the engaging portion 6d, the pressing force against the curved surface 6c of the distal end portion 3b of the locking member 3 is released.
Is repelled upward by its own elastic force and the elastic force of the spring 7, and returns to the original state (FIG. 4C). At this time, the rear end face 3e of the locking groove 3c of the locking tool 3 is
Is locked to the upper edge of the locking portion 6e.
Cannot be inserted any more. Then, as shown in FIG. 4D, when the locking tool 3 is pulled in the direction of the arrow b in the figure, the front end face 3 of the locking groove 3c of the locking tool 3 is formed.
f is engaged with the lower edge of the engaging portion 6d of the leaf spring member 6, and positions the locking member 3. As described above, the engaging portion 6d of the leaf spring member 6 and the locking groove 3c of the locking tool 3 are engaged with each other. In addition, since the leaf spring member 6 is always repelled upward by its own elastic force and the elastic force of the spring 7,
The engaging portion 6d and the locking groove 3c are kept engaged.

A method for releasing the engagement between the main body 2 and the locking member 3 will be described with reference to FIG. First, as shown in FIG. 5A, the other end 6b of the leaf spring member 6 is pressed in the direction of arrow c in the figure against the elastic force of the leaf spring member 6 itself and the elastic force of the spring 7, The curved surface 6c of the spring member 6 is lowered. At this time, the engaging portion 6d formed on the curved surface 6c also descends,
The locking groove 3c of the locking tool 3 is disengaged from the engaging portion 6d. That is, the engagement between the engaging portion 6d and the locking groove 3c is released. Next, as shown in FIG.
When the locking tool 3 is pulled in the direction of the arrow d in the drawing while keeping the pressure pressed, the locking tool 3 can be pulled out from the engaging portion 6 d of the leaf spring member 6. Then, as shown in FIG. 5C, the pressing of the other end 6 of the leaf spring member 6 is stopped, and
Is further pulled in the direction of arrow d in the figure, and the locking tool 3 is pulled out from the guide hole 8a of the guide portion 8. As described above, the engagement between the main body 2 and the lock 3 can be released.

As described above, the embodiments of the present invention have been described. However, the present invention is not limited only to such embodiments, and as long as it is based on the technical idea of the present invention,
Various modifications are possible. For example, as shown in FIG.
When the ear 6g is provided at the other end 6b of the leaf spring member 6, the spring 7
When the spring springs the other end 6b of the leaf spring member 6 upward, the spring 7 can be prevented from coming off the lower surface of the other end 6b of the leaf spring member 6. As shown in FIG. 6 (a), the ear 6g
The leaf spring member 6 is formed to have a predetermined length from the right end, the left end, and the rear end of the other end 6b so as to surround the lower surface of the other end 6b. As shown in FIG. 6B, the ear 6g covers the upper side of the spring 7 when the spring 7 contacts the lower surface of the other end 6b of the leaf spring member 6, and the spring 7 The spring member 6 is prevented from coming off the other end 6b.

Also, when attaching a plurality of annular accessories,
When the plurality of fasteners 1 are connected in parallel to the direction of engagement between the main body 2 and the locking tool 3, the plurality of fasteners 1 of the ring-shaped accessory are provided.
It is convenient for disengaging a plurality of annular accessories. Further, when the fasteners 1 of the plurality of annular accessories are assembled, the plurality of annular accessories can be beautifully mounted. When connecting the plurality of fasteners 1, it is preferable that the bases 5 of the respective main body parts 2 are collectively and integrally formed as one component from the viewpoint of the decoration of the fasteners 1.

[0023]

According to the present invention, the fastening of the annular accessory is achieved by the engagement between the engaging portion formed on the leaf spring member of the main body and the notch groove formed on the engaging device. Can be connected to each other. Since the engagement mechanism on the main body side is composed of the leaf spring member and the engagement portion formed on the leaf spring member, the number of parts of the main body portion is reduced. Further, the size of the main body can be reduced. Therefore,
Since the shape and size of the main body can be freely designed, the decorativeness of the clasp of the annular accessory can be enhanced. The engaging portion was formed by punching a curved surface of the leaf spring member. With this configuration, the engagement portion can be provided on the leaf spring member, so that the number of parts of the main body can be reduced. Further, the main body is configured to include an urging means for urging the elastic force of the leaf spring member. With this configuration, the elastic force of the leaf spring member can be urged, so that the engagement between the main body of the fastener and the locking tool can be maintained when the annular accessory is used. Further, the main body is provided with a guide means for guiding the locking tool to the leaf spring member. With this configuration, the locking tool can be reliably guided to the leaf spring member, so that the locking tool can be easily engaged with the main body.

[Brief description of the drawings]

FIG. 1 (a) is a plan view of a clasp for an annular accessory according to the present invention. (B) is a front view of the clasp of the annular accessory according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. FIG.
It is a BB sectional view taken on the line of (a).

FIG. 3 is an exploded perspective view of a clasp of the annular accessory.

FIG. 4 is an explanatory view of a method of engaging a main body with a locking member.

FIG. 5 is an explanatory view of a method of releasing the engagement between the main body and the locking member.

FIG. 6A is a perspective view showing a state in which a lug is provided at the other end of the leaf spring member. FIG. 6B is a cross-sectional view showing a state where the leaf spring member and the spring of FIG. 6A are in contact with each other.

FIG. 7 is a sectional view showing a conventional fastener.

FIG. 8 is a sectional view showing another conventional fastener.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fastener 2 Main body 3 Locking tool 3b Tip 3c Locking groove 5 Base 6 Leaf spring member 6a One end 6b Other end 6c Curved surface 6d Engaging part 7 Spring 8 Guide part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A44C 27/00 A44C 27/00

Claims (4)

[Claims] 1. A main body and a locking device, wherein the main body and the locking device are provided with a connecting ring to which an end of an annular accessory is attached, and a connection ring between the main body and the locking device is provided. In some cases,
A fastener for an annular accessory in which ends of the annular accessory are connected to each other, wherein a notch groove is formed at a tip end of the locking accessory, and the main body is fixed at one end so as to be capable of raising and lowering. A fastener for an annular accessory, comprising a member, wherein an engaging portion is formed on the leaf spring member so as to elastically engage and disengage with a notch groove of the locking member. 2. The clasp for an annular accessory according to claim 1, wherein the engaging portion is formed by punching an inclined surface of the leaf spring member. 3. The apparatus according to claim 1, wherein said main body has an urging means for urging an elastic force of said leaf spring member.
Or the fastener of the circular jewelry according to 2. 4. The apparatus according to claim 1, wherein the main body includes guide means for guiding a distal end portion of the locking tool to an inclined surface of the leaf spring member. Clasps for ring accessories.