JP7179699B2 - Fasteners for core materials for accessories - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fastener for a core used in accessories such as bracelets and necklaces.

The above-mentioned ring-shaped accessories are made by passing string-shaped or chain-shaped core materials such as threads or thin ropes through a large number of decorative members such as pearls, jewels, glass beads, etc., and connecting the ends to form a ring shape. However, in order to make the connecting part at the end of the core material inconspicuous or to give the connecting member itself a decorative effect, fasteners and connecting fittings as shown in Patent Documents 1 and 2 are used. ing.

Utility Model Registration No. 3017097 Japanese Patent Application Laid-Open No. 2003-230413

However, since both of Patent Documents 1 and 2 use a bead-shaped connecting member, they are excellent in terms of maintaining the same shape as other decorative members. In addition, it is necessary to provide a hook-shaped locking part that can be engaged and disengaged inside the inserted part. limited to metals and plastics with excellent As a result, the parts cost is high, and it is difficult to match the design of the bead and the connecting part, and there is little room for coordination as a whole.
Another disadvantage is that it is difficult for users, especially children, to quickly and accurately engage and disengage the connecting portion of the microstructure.

The fastener of the present invention for solving the above-mentioned problems is, firstly, an accessory in which a decorative material 3 is attached to a cord-like or chain-like core material 4 whose both ends are connected in a loop through a connecting member 7. , at least a pair of insertion holes 8 for inserting the ends of the core member 4 in opposite directions from the left and right sides are provided through the connecting member 7 in the left-right direction, and one of the pair of insertion holes 8 is provided. 8 and the right opening end of the other insertion hole 8 are used as insertion openings 8a through which the left and right ends of the core material 4 are inserted, and the other opening ends of the insertion openings 8a are used as insertion openings 8a. Engagement openings 8b and 8c for engaging the tips of the respective core members 4 are formed, and engagement portions 4a and 4b to be engaged with the engagement openings 8b and 8c are formed at the tips of the core members 4. The insertion holes 8a are opened on both left and right sides of the connecting member 7 at the connecting center O, which is the center of the connecting direction between the left and right sides of the connecting member 7 due to the tension of the left and right core members 4, or at a position near the connecting center O. It is characterized in that each insertion hole 8 is penetrated in an inclined direction intersecting the connecting direction so that the openings 8c are opened at positions near the outer periphery on both left and right sides of the connecting member 7. As shown in FIG.

Secondly, the center of each insertion opening 8a of the insertion hole 8 overlaps with the center of the other insertion opening 8a or at least falls within the opening range of the other insertion opening 8a in the left and right side view of the connecting member 7. It is characterized by being set in

Thirdly, since the size of each locking opening 8b, 8c is formed to be larger than the size of each insertion hole 8, each locking portion of the core member 4 inserted into each locking opening 8b, 8c 4a and 4b are locked at the boundaries between the insertion holes 8 and the locking openings 8b and 8c.

Fourthly, it is characterized in that the locking portions 4a, 4b and the locking openings 8b, 8c are formed in a size and shape that can be accommodated within the outline of the member 7. FIG.

Fifth, at least one locking opening 8b is formed by a groove-shaped recess crossing the opening of the insertion hole 8, and an arc-shaped groove-shaped cross section 9a having a radius not exceeding the radius of the insertion hole 8 and the groove A core member 4 is accommodated along the groove-shaped cross-section 9a in a locking member 9 which is composed of a cylindrical cross-section 9b having the same diameter and is connected to the cross- section 9a and which is housed in the locking opening 8b. In addition, the tip of the core member 4 is inserted and fixed into the cylindrical cross-sectional portion 9b to form the engaging portion 4a.

Sixthly, the connecting member 7 is characterized by being a disk-shaped member having a constant thickness and being circular in left and right side views.

The fastener of the present invention constructed as described above requires simple processing such as drilling holes in the connecting member itself, surface processing, etc., and only needs to treat the end portion of the core material. There are few restrictions on the material of the parts, and the cost can be reduced. For this reason, the degree of freedom in combining the material of the beads and the material of the connecting member is increased, and the degree of freedom in overall coordination by the user is increased.

In addition, since the insertion holes for inserting both connecting ends of the core material are opened at the center or near the center on both left and right side surfaces of the connecting member, the connecting member at the time of connection is located at the center of the connection or near the center of the connection. Since the connecting member is pulled from both sides by the core material, the connecting member is subjected to tension from both left and right sides at the connecting center or a position close to it, and is not tilted when viewed from the front. In particular, when the beads are close to each other on both sides, it is possible to maintain a consistent and comfortable connection posture without tilting due to core run-out with the adjacent decorative materials.
Detailed effects other than these features will be supplemented in the description of the embodiments.

It is the whole front view and partial enlarged view of the bracelet using the fastener of this invention. Fig. 2 is a cross-sectional view of beads used in a bracelet; Fig. 10 is a side view of a connecting member used as a fastener; It is a right view of a connection member. (A) and (B) are a bottom view and a plan view, respectively, showing an example of a locking portion (locking member) forming a connecting end of a core material.

1 to 5 show one embodiment of the fastener of the present invention. FIG. 1 is an overall front view of a bracelet 1, which is one of typical accessories, and in this example, through holes made of natural stone shown in FIG. A string-like core material 4 made of elastic high-strength polyurethane or other synthetic resin is passed through a large number of beads 3 attached to 2 through the through holes 2, and the adjacent beads are elastically pressed against each other to form the beads 3. are connected in a stretchable loop.

In this example, the bead 3 is made of natural stone with a diameter of 8 mm, the diameter of the central through-hole 2 is 1.1 mm or more, and the diameter of the core material is 1.0 mm. As the core material, it is also possible to use resin-coated threads, wires, or chain-like materials other than those described above.

A disk-shaped connecting member 7 having a constant thickness is used for the fastener 6 of the core material 4 of the accessory 1 shown in FIG. However, the materials, sizes, shapes, etc. of these are arbitrarily selected according to the type and design of the accessory, the thickness of the core material, the target user group, cost, difficulty of processing, and the like.

A pair of through holes 8 having a diameter of about 1.5 mm, through which the connecting ends of the core member 4 are inserted from both sides, are formed at approximately the center positions of the left and right side surfaces of the connecting member 7 so as to penetrate the other side, respectively. An insertion opening 8a is formed on each side.

The left and right through-holes 8a are openings of the through-holes 8 different from each other. The centers of the insertion holes 8a on both the left and right sides are arranged so that the connecting member 7 stands upright as much as possible with respect to the direction of the left and right core members 4 (connecting direction) when a tensile force is applied in the left and right directions by the core member 4, which will be described later. Although it is desirable to match the center of the connection direction of the connection member 7 (connection center O) so as to maintain the connection direction, the center of the insertion holes 8a on both the left and right sides and the connection center are brought close to each other as much as possible, and at least the left and right of both insertion holes 8 are aligned. It is desirable that the central positions of the left and right insertion openings 8a be within the opening range when viewed from the side.

In the illustrated example, the disc-shaped connecting member 7 is intended only for connecting the core material 4, so the centers of the left and right insertion openings 8a are aligned with the center of the circle. In cases such as when it also serves as a part of the top (not shown), the center of the connecting member 7 and the connecting center O do not necessarily match.

In order to align the centers of the left and right insertion openings 8a of the two insertion holes 8 with or close to the connection center O as described above, the upper and lower insertion holes 8 must be directed upward and downward as shown in FIGS. (In this example, they are parallel to each other), and the locking openings 8b, 8b of the upper and lower insertion holes 8 for locking the locking portions 4a, 4b of the core member 4 are opened vertically distributed on both left and right sides. There is a need. (Note: The up, down, left and right here indicate the relative positional relationship according to the drawing, and change depending on the orientation of the accessory 1.)

Of the locking openings 8b and 8c, the upper locking opening 8b in this example is formed as a circular groove-shaped recess that crosses the left opening of the insertion hole 8, and engages one of the core members 4. As shown in FIG. 5, the stopping portion 4a is constructed by attaching a locking portion 9 made of a circular tubular member to the connecting end of the core member 4. As shown in FIG.

As shown in FIG. 5, the locking member 9 has an arc-shaped (semi-circular) groove-shaped cross section 9a with a radius not exceeding the radius of the insertion hole 8 in the left half, and the groove-shaped cross section 9a and the right half. The core member 4 is accommodated along the groove-shaped cross-sectional portion 9a, and one connecting end of the core member 4 is in the cylindrical cross-sectional portion 9b. , and the C-shaped cylindrical cross-sectional portion 9b is pressed inward to be plastically deformed (bonded as necessary) to integrally fix the core material 4. As shown in FIG.

With this structure, the connecting end of the core member 4 is inserted together with the locking member 9 through the insertion opening 8a on the right side of the connecting member 7 and pulled out to the locking opening 8b side, and the core member 4 is bent and attached to the core member 4. The locking member 9 (locking portion 4a) is accommodated in the circular groove-shaped concave portion of the engaging opening 8b by drawing the core member 4 into the T-shaped locking member 9 and the core member 4 is connected. The end is locked to the connecting member 7 .

On the other hand, the locking opening 8c that opens on the right side of the other (lower) insertion hole 8 is formed as a counterbore-shaped large-diameter hole larger in diameter than the insertion hole 8 . On the other hand, at the locking portion 4b, which is the other end of the core member 4, a bowl-shaped, spherical or C-shaped ring having a diameter smaller than the diameter of the countersunk hole of the locking opening 8c and larger than the insertion hole 8 on the lower side is provided. A locking member 11 having a shape or the like is fitted and fixed in advance by caulking or adhesion. Further, this engaging portion 4b may be formed by forming a knot having a diameter larger than that of the lower insertion hole 8 at the end portion of the core member 4 itself.

In the core member 4, the locking portion 4a to which the locking member 9 described above is externally fixed is inserted into the lower insertion hole 8 in advance from the lower locking opening 8c and pulled out to the right, and the locking portion 4b is pulled downward. All the beads 3 are sequentially inserted and connected, and finally the locking member 9 is moved to the upper side. It is inserted through the insertion hole 8 and engaged with the engaging opening 8b, and the engaging portion 4a of the core member 4 is connected to the other engaging portion 4b via the connecting member 7. As shown in FIG.

By forming one locking portion 4b in the core member 4 as described above, the insertion and withdrawal of the core member 4 into and out of the insertion hole 8 on the side of the connecting member 7 and the through hole 2 of each bead 3 can all be performed in the same cylinder. The locking member 9 can be easily and quickly connected, and both ends of the core can be easily and accurately connected. In order to smoothly insert and lock (connect) these core members 4, and to reduce adjacent intervals between the beads 3 and the connecting members 7, it is desirable that the core members 4 have elasticity.

Also, by aligning the insertion openings 8a of the two insertion holes 8 of the connecting member 7 with the connecting center O of the core member 4 of the connecting member 7 or a position close to the connecting center O, the ring (loop) of the accessory 1 can be inserted. The balance of the posture of the connecting member 7 can be maintained.

In addition, since the connecting member 7 does not require complicated processing such as hooks, sockets, or threads inside, there are no large restrictions on the material (for example, use of natural stone), shape, size, etc., and the connecting member 7 itself can be decorated. In addition to being able to have sexuality, the degree of freedom in design selection and coordination for the entire accessory increases.

3 Decorative material (beads)
4 core material 4a, 4b locking portion 6 fastener 7 connecting member 8 insertion hole 8a insertion opening 8b, 8c locking opening 9 locking member 9a grooved cross section 9b cylindrical cross section O center of connection

Claims (6)

An accessory in which a decorative material (3) is attached to a string-like or chain-like core material (4) having both ends connected in a loop shape via a connecting member (7), wherein each end of the core material (4) at least a pair of through-holes (8) through which are inserted in opposite directions from both left and right sides of the connecting member (7), and one of the pair of through- holes (8) is provided with at least a pair of through-holes (8) The left opening end of the other insertion hole (8) and the right opening end of the other insertion hole (8) are used as insertion holes (8a) for inserting the left and right ends of the core material (4), and the other opening of each insertion hole (8a) Locking openings (8b) and (8c) for locking the tips of the left and right core members (4) having their ends inserted, and locking openings (8b) and (8b) at the tips of the core members (4). 8c) are formed, and the insertion openings (8a) are connected by pulling the left and right core members (4) on both left and right sides of the connecting member (7). Opening at the connection center (O), which is the center of the left and right connection direction in (7), or at a position near the connection center (O), and locking openings (8b) and (8c) are formed on both left and right sides of the connection member (7). A fastener for a core material for an accessory, in which each insertion hole (8) is penetrated in an inclined direction crossing the connecting direction so as to open at a position near the outer periphery. The center of each insertion opening (8a) of the insertion hole (8) overlaps the center of the other insertion opening (8a) or at least the opening of the other insertion opening (8a) in the left and right side view of the connecting member (7). 2. A fastener for a core material for an accessory according to claim 1, provided at a position within the range. The size of each locking opening (8b), (8c) is formed to be larger than the size of each insertion hole (8), so that the core material is inserted into each locking opening (8b), (8c). 3. According to claim 1 or 2, each locking portion (4a), (4b) of (4) is locked at a boundary portion between each locking opening (8b), (8c) and the insertion hole (8). Fastening core material for jewelry. When the locking portions (4a) and (4b) are locked, the locking portion (4a) is sized and shaped so that the outer peripheries of the locking portions (4a) and (4b) can be accommodated within the outline of the connecting member (7). ), (4b) and engaging openings (8b), (8c). At least one locking opening (8b) is formed by a groove-shaped recess crossing the opening of the insertion hole (8), and an arcuate groove-shaped cross section (9a) having a radius not exceeding the radius of the insertion hole (8) and a cylindrical section (9b) of the same diameter connected to the groove-shaped section (9a). A core material (4) is accommodated along the cross section (9a), and the front end of the core material (4) is inserted and fixed into the cylindrical cross section (9b) to form a locking part (4a). Item 5. A fastener for a core material for an accessory according to any one of Items 1 to 4. A fastener for a core material for an accessory according to any one of claims 1 to 5, wherein the connecting member (7) comprises a disc-shaped member having a constant thickness and being circular in left and right side views.

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