JP7385069B1 - Fasteners for jewelry - Google Patents

Abstract

An object of the present invention is to provide a fastener for an accessory that can be securely connected simply by bringing two parts close to each other. SOLUTION: An accessory fastener 1 consisting of a first connecting component 11 and a second connecting component 12 that are provided at both ends of a string-like accessory and can be connected to each other in the axial direction, the first connecting component 11 being axially connected to each other. The second connecting component 12 has a protrusion 11a that protrudes in one direction along the direction and a first magnet 91 installed at the tip of the protrusion 11a. a second magnet 92 installed at the bottom of the recess 12a, and a third magnet 93 located radially outward from the recess 12a and away from the second magnet 92 in the other direction in the axial direction. and when the first magnet 91 is located between the second magnet 92 and the third magnet 93 in the axial direction, the second magnet 92 exerts an attractive force on the first magnet 91 in one direction. At the same time, the third magnet 93 exerts a repulsive force on the first magnet 91 in one direction. [Selection diagram] Figure 4

Description

TECHNICAL FIELD The present invention relates to a fastener for an accessory that allows a string-like accessory to be easily attached and detached.

2. Description of the Related Art Fasteners for string-like accessories such as necklaces that use magnetic force are known (see Patent Document 1). The fastener described in Patent Document 1 can be connected using two magnets. Further, the fastener described in Patent Document 1 has an inclined recess and an inclined protrusion that fits into the inclined recess so that the fastener is difficult to come off in the connected state. Therefore, they must be rotated to securely connect them. If you try to connect them without rotating, they will stick together due to magnetic attraction, but the bonding force is weak and they will quickly separate even if there is a slight pull from the outside.

Japanese Unexamined Patent Publication No. 56-60505

The problem to be solved by the present invention is that in conventional fasteners for jewelry, simply bringing two parts close together has a weak bonding force, and the parts are easily separated.

SUMMARY OF THE INVENTION The present invention aims to provide a fastener for jewelry that can be securely connected simply by bringing the two parts closer together.

The accessory fastener of the present invention is a accessory fastener comprising a first connecting part and a second connecting part that are provided at both ends of a string-like accessory and can be connected to each other in the axial direction, wherein the first connecting part is , a projection protruding in one direction along the axial direction, and a first magnet installed at the tip of the projection, the second connecting component being recessed in the first direction, and connecting a recess that accommodates the protrusion of the first connecting component; a second magnet installed at the bottom of the recess; and a recess that is spaced apart from the second magnet in another axial direction and radially outward from the recess. and a third magnet installed, and when the first magnet is located between the second magnet and the third magnet in the axial direction, the second magnet is located between the first magnet and the first magnet. At the same time, the third magnet applies a repulsive force to the first magnet in the one direction, and the first magnet When located on the other direction side, the third magnet applies a repulsive force to the first magnet in the other direction.

Further, another accessory fastener of the present invention is characterized in that the first connecting part and the second connecting part contact each other on a plane inclined with respect to a plane perpendicular to the axial direction when connected. .

Further, another accessory fastener according to the present invention is characterized in that the first connecting component and the second connecting component contact each other on curved surfaces when connected.

Further, another accessory fastener according to the present invention is characterized in that the curved surface is a spiral surface consisting of a spiral surface centered on the axial direction.

The jewelry fastener of the present invention is securely connected by simply bringing the two parts closer together.

In addition, in another accessory fastener of the present invention, the two parts are separated by twisting around the axial direction and can be easily separated.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole accessory using the accessory fastener of 1st embodiment of this invention. FIG. 2 is a perspective view and a front view showing a first connecting component of the accessory fastener according to the first embodiment of the present invention. FIG. 2 is a perspective view and a front sectional view showing a second connecting component of the accessory fastener according to the first embodiment of the present invention. FIG. 2 is a partially sectional front view showing a state in which the fastener for accessory according to the first embodiment of the present invention is connected. FIG. 2 is a partially sectional front view showing a separated state of the accessory fastener according to the first embodiment of the present invention. It is a perspective view which shows the fastener for accessories of a second embodiment of this invention separately. It is a top view and a front view which show the fastener for accessories of 3rd embodiment of this invention. FIG. 7 is a front view and an AA sectional view showing a fastener for an accessory according to a fourth embodiment of the present invention.

[First embodiment]
An accessory fastener 1 according to the first embodiment of the present invention is installed at an end of a string-like accessory C (see FIG. 1). The accessory fastener 1 is roughly divided into a first connecting component 11 and a second connecting component 12. An attachment portion 11d of the first connection component 11 and an attachment portion 12d of the second connection component 12 are installed at both ends of the accessory C, respectively. When the first connecting component 11 and the second connecting component 12 are connected, the accessory C becomes annular as shown in FIG. 1. When the first connecting component 11 and the second connecting component 12 are separated, the accessory C becomes string-like. The first connecting component 11 and the second connecting component 12 have a generally cylindrical outer shape.

Next, the first connecting component 11 will be explained based on FIG. 2. The first connecting component 11 has a protrusion 11a that protrudes in one direction along the axial direction. A first magnet 91 is installed at the tip of the protrusion 11a. The first connecting component 11 has an inclined surface 11b, and the inclined surface 11b is a plane inclined with respect to a plane perpendicular to the axial direction.
Next, the magnetic poles of the first magnet 91 of the first connecting component 11 will be explained. 91a of the first magnet 91 is a north pole, and 91b is a south pole.

Next, the second connecting component 12 will be explained based on FIG. 3. The second connecting component 12 has a recess 12a that is recessed in one direction along the axial direction. The recess 12a accommodates the protrusion 11a when the first connecting component 11 and the second connecting component 12 are connected. A second magnet 92 is installed at the bottom of the recess 12a. The second connecting component 12 has a third magnet 93, and the third magnet 93 is spaced apart from the second magnet 92 in the other axial direction and is installed radially outward from the recess 12a. The second connecting component 12 has an inclined surface 12b, and the inclined surface 12b is a plane inclined with respect to a plane perpendicular to the axial direction. The inclined surface 12b comes into surface contact with the inclined surface 11b when the first connecting component 11 and the second connecting component 12 are connected.
Next, the magnetic poles of the magnet of the second connecting component 12 will be explained. 92a of the second magnet 92 is a north pole, and 92b is a south pole. In the third magnet 93, which is another magnet of the second connecting component 12, 93a is the north pole, and 93b is the south pole.

Next, a state in which the first connecting component 11 and the second connecting component 12 are connected will be explained based on FIG. 4. In order to connect the first connecting component 11 and the second connecting component 12 from the separated state, it is sufficient to bring them closer together. When the protrusion 11a of the first connecting component 11 is inserted into the recess 12a of the second connecting component 12 and the first magnet 91 is located between the second magnet 92 and the third magnet 93 in the axial direction, the first magnet 91 Since the north pole 91a of the second magnet 92 and the south pole 92b of the second magnet 92 face each other, an attractive force is generated. In addition, since the S pole 91b of the first magnet 91 and the S pole 93b of the third magnet 93 face each other, a repulsive force is generated. Therefore, the first connecting part 11 and the second connecting part 12 are firmly connected. At this time, the inclined surface 11b of the first connecting component 11 and the inclined surface 12b of the second connecting component 12 are in surface contact.
Note that when the accessory C is pulled, force is applied in a direction that causes the first connecting component 11 and the second connecting component 12 to separate. Then, the first connecting component 11 tries to move in the other direction. At that time, the first magnet 91 approaches the third magnet 93. Then, the repulsive force between the S pole 91b of the first magnet 91 and the S pole 93b of the third magnet 93 becomes even stronger, so that the first connecting component 11 is returned in one direction. Therefore, the first connecting component 11 and the second connecting component 12 are not easily separated even if a pulling force is applied to the accessory C from the outside.

Next, a state in which the first connecting component 11 and the second connecting component 12 are separated will be described based on FIG. 5. In order to separate the first connecting component 11 and the second connecting component 12 from the connected state, the first connecting component 11 may be rotated in either direction in the axial direction with respect to the second connecting component 12. Then, the inclined surface 11b of the first connecting component 11 and the inclined surface 12b of the second connecting component 12 cannot maintain a state of surface contact and separate in the axial direction. Then, the first connecting part 11 moves in the other direction from the second connecting part 12. That is, the first magnet 91 moves in the other direction from the second magnet 92. When the first magnet 91 is located in the other direction than the third magnet 93, a repulsive force is generated because the N pole 91a of the first magnet 91 and the N pole 93a of the third magnet 93 face each other. Therefore, the first connecting component 11 receives a repulsive force in the other direction. After that, it can be easily separated by pulling the first connecting part 11.

[Second embodiment]
Next, an accessory fastener 2 according to a second embodiment of the present invention will be described based on FIG. 6. The difference between the accessory fastener 2 of the second embodiment and the accessory fastener 1 of the first embodiment is that the first connecting component 21 and the second connecting component 22 contact each other not on a flat surface but on a curved surface when connected. Just do it. Therefore, the first connecting component 21 has an inclined surface 21b and a vertical surface 21c, which form a curved surface. The second connecting component 22 has an inclined surface 22b and a vertical surface 22c, which form a curved surface. That is, when the first connecting component 21 and the second connecting component 22 are connected, the curved surface consisting of the inclined surface 21b and the vertical surface 21c is in surface contact with the curved surface consisting of the inclined surface 22b and the vertical surface 22c.
To separate the first connecting component 21 and the second connecting component 22 from the connected state, the first connecting component 21 may be rotated in either direction around the axial direction with respect to the second connecting component 22. Then, the curved surface consisting of the inclined surface 21b and the vertical surface 21c of the first connecting component 21 and the curved surface consisting of the inclined surface 22b and the vertical surface 22c of the second connecting component 22 cannot maintain a state of surface contact and separate in the axial direction. Then, the first connecting part 21 moves in the other direction from the second connecting part 22. The subsequent action of the magnetic force is the same as in the first embodiment.

[Third embodiment]
Next, based on FIG. 7, an accessory fastener 3 according to a third embodiment of the present invention will be described. The difference between the accessory fastener 3 of the third embodiment and the accessory fastener 1 of the first embodiment is that the first connecting component 31 and the second connecting component 32 are centered not in a plane but in the axial direction when connected. They only touch each other at the spiral surfaces formed by the spiral surfaces. Therefore, the first connecting component 31 has spiral surfaces 31b and 31c. The second connecting component 32 has spiral surfaces 32b and 32c. That is, when the first connecting component 31 and the second connecting component 32 are connected, the spiral surfaces 31b and 31c are in surface contact with the spiral surfaces 32b and 32c, respectively.
To separate the first connecting component 31 and the second connecting component 32 from the connected state, the first connecting component 31 may be rotated in either direction around the axial direction with respect to the second connecting component 32. Then, while the spiral surface 31b of the first connecting component 31 and the spiral surface 32b of the second connecting component 32 are in partial contact, the spiral surface 31c of the first connecting component 31 and the spiral surface 32c of the second connecting component 32 are separated from each other. Alternatively, while the spiral surface 31c of the first connecting component 31 and the spiral surface 32c of the second connecting component 32 are partially in contact with each other, the spiral surface 31b of the first connecting component 31 and the spiral surface 32c of the second connecting component 32 are in contact with each other. The surfaces 32b move away from each other. Then, the first connecting part 31 moves in the other direction from the second connecting part 32. The subsequent action of the magnetic force is the same as in the first embodiment.

[Fourth embodiment]
Next, based on FIG. 8, an accessory fastener 4 according to a fourth embodiment of the present invention will be described. The difference between the accessory fastener 4 of the fourth embodiment and the accessory fastener 1 of the first embodiment is that the shape of the third magnet 94 built into the second connecting component 42 is not cylindrical but circular. It's just that. Therefore, the shape of the first connecting component 41 is the same as that of the first connecting component 11. In the second connecting component 12 of the first embodiment, the third magnet 93 is built in only a portion. However, in the second connecting component 42, the third magnet 94 has an annular shape that goes around the outside of the recess 42a. Therefore, when connecting, the repulsive force that the third magnet 94 gives to the first magnet 91 becomes stronger, and the first connecting component 41 and the second connecting component 42 are connected more firmly. When separating, if the first magnet 91 is located in a different direction than the third magnet 94, a stronger repulsive force acts between the first magnet 91 and the third magnet 94 than in the case of a cylindrical magnet. The first connecting component 41 and the second connecting component 42 become easier to separate.

[Other variations]
In addition, in each of the above-mentioned embodiments, 91a, 92a, and 93a were set as north poles, and 91b, 92b, and 93b were set as south poles, but these may be set reversely. Furthermore, in each of the above-described embodiments, the outer shape of the accessory fasteners 1, 2, 3, and 4 is cylindrical, but the cross section of the accessory fastener may be polygonal, such as triangular or quadrangular. It is also possible to take any shape. In addition, in the accessory fastener 1 of the first embodiment, the first connecting component 11 and the second connecting component 12 were designed to contact at the inclined surfaces 11b and 12b, but they contact at a plane perpendicular to the axis. It is also possible to configure it like this. Furthermore, in the accessory fastener 2 of the second embodiment, the first connecting part 21 and the second connecting part 22 were in contact with each other on a curved surface formed by a combination of two planes, but they can be formed on any curved surface. It is also possible to configure them so that they are in contact.

1, 2, 3, 4...Accessory fasteners 11, 21, 31, 41...First connecting parts 11a, 21a, 31a, 41a...Protrusion 11b...Slanted surface (plane)
21b...Slanted surface (curved surface)
21c...Vertical surface (curved surface)
31b...Spiral surface 31c...Spiral surface 11d...Attachment portions 12, 22, 32, 42...Second connecting parts 12a, 22a, 32a, 42a...Recessed portion 12b...Slanted surface (plane)
22b...Slanted surface (curved surface)
22c...Vertical surface (curved surface)
32b...Spiral surface 32c...Spiral surface 12d...Attachment part 91...First magnet 92...Second magnet 93, 94...Third magnet 91a, 92a, 93a...N pole 91b, 92b, 93b...S pole C...Accessories

Claims (1)

A fastener for an accessory comprising a first connecting part and a second connecting part that are provided at both ends of a string-like accessory and can be connected to each other in the axial direction,
The first connecting part is
a protrusion protruding in one direction along the axial direction;
a first magnet installed at the tip of the protrusion;
The second connecting part is
a recess that is recessed in the one direction and accommodates the protrusion of the first connecting component when connected;
a second magnet installed at the bottom of the recess;
and a third magnet located away from the second magnet in another axial direction and radially outward from the recess,
When the first magnet is located between the second magnet and the third magnet in the axial direction, the second magnet applies an attractive force to the first magnet in the first direction. At the same time, the third magnet applies a repulsive force to the first magnet in the one direction,
When the first magnet is located closer to the other direction than the third magnet in the axial direction, the third magnet acts on the first magnet in the other direction. ,
The first connecting component and the second connecting component each have an inclined surface that is a plane that is inclined with respect to a plane perpendicular to the axial direction,
In a state where the first connecting component and the second connecting component are connected, the inclined surfaces are in surface contact with each other,
When the first connecting component and the second connecting component are connected to each other, when the first connecting component is rotated in either direction around the axial direction with respect to the second connecting component, the inclined surfaces are aligned with each other. It is no longer possible to maintain a state of contact between the surfaces, and the first connecting component and the second connecting component separate in the axial direction.
A fastener for accessories characterized by:

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