JP7209409B1 - Fasteners and jewelry - Google Patents

Abstract

An object of the present invention is to more reliably prevent a fastener from coming off a string. A fastener for an accessory that is provided at an end of a string and holds the string wrapped around the body, comprising a cylindrical socket that covers the outer periphery of the end, and a socket that connects the socket to the end. a pin fixed to the socket, and an internal space formed therein, and a holding portion accommodating the end, the pin, and the socket fixed to the end by the pin in the internal space, The socket contacts a projection projecting radially inward on the inner periphery of the holding portion in a direction in which the string is pulled out from the holding portion, and the pin is a first socket that penetrates the string in the radial direction. The pin is inserted into a through hole and a second through hole radially penetrating the socket and communicating with the first through hole, and the length in the insertion direction of the pin is longer than the inner diameter of the socket. Fastener. [Selection drawing] Fig. 2

Description

The present invention relates to fasteners and jewelry.

2. Description of the Related Art In annular accessories such as necklaces and bracelets, fasteners are provided, for example, at both ends of a string. Conventionally, various techniques have been proposed to prevent a fastener from falling off from a string.

In Patent Document 1, a ring-shaped retainer fitting attached to the end of a string is pressurized in the circumferential direction and pushed through an opening of a tubular portion to attach the string and the retainer fitting to the tubular portion. Techniques are disclosed. Since the opening of the tubular portion is formed with a flange portion, when the string is pulled out, the pull-out of the string is suppressed by engaging the retaining metal fitting with the flange portion.

Patent Literature 2 discloses a detachment preventing member wound around both ends of a long body. The detachment prevention member is a member having a substantially C-shaped cross section, and is wound around the end of the elongated body with a projection pierced. The side edge of the detachment prevention member is inclined so as to widen toward the edge, and this side edge abuts the inclined surface of the holding member that holds one end of the elongated body. When the elongated body is pulled out, part of the force applied to the elongated body is converted to a direction toward the axis of the elongated body through the inclined surface. As a result, a force is applied to the holding member in a direction to tighten the ends of the elongated body, thereby suppressing separation of the elongated body.

JP-A-2003-265211 Japanese Patent Application Laid-Open No. 2008-000209

Patent documents 1 and 2 attach the socket to the holding part (cylindrical part or holding member) in a state in which the socket (retaining fitting or detachment preventing member) is attached to the string (string or long body). In such a configuration, after the string is attached to the holder via the socket, the socket may come off from the string, causing the fastener to fall off from the string.

In Patent Literatures 1 and 2, the socket is bitten into the string in the circumferential direction in order to prevent the socket from slipping out of the string. However, even if the socket is embedded in the string, if the socket or the string is made of an elastic material such as rubber, it will not be possible to prevent the socket from slipping out of the string for a long period of time because the penetration of the socket will weaken over time. There is Also, if the cord is pulled with a stronger force, the socket may come off from the cord. Furthermore, if the socket is forced into the string more strongly in order to prevent the socket from coming off, the string may be damaged.

The present disclosure has been made in view of the above problems, and an object of the present disclosure is to more reliably prevent a fastener from coming off a string.

A fastener for an accessory according to the present disclosure is a fastener for an accessory that is provided at the end of a string and holds the string wound around the body, comprising: a cylindrical socket that covers the outer periphery of the end; a pin for fixing the socket to the end portion; and an internal space formed therein, the holding portion accommodating the end portion, the pin, and the socket fixed to the end portion by the pin in the internal space. wherein the socket contacts a convex portion protruding radially inward on the inner periphery of the holding portion in a direction in which the string is pulled out from the holding portion, and the pin moves the string radially. and a second through hole radially penetrating the socket and communicating with the first through hole, and the length of the pin in the insertion direction of the socket is A fastener that is longer than the inner diameter.

It is a figure which illustrates the accessories which concern on embodiment. It is a figure which illustrates the cross section of the fastener which concerns on embodiment, and its periphery. It is a figure explaining fixation of a string and a socket with a pin concerning an embodiment. It is a figure explaining fixation of a string and a attaching part with a socket concerning an embodiment. It is a figure which illustrates the cross section of the fastener which concerns on a modification, and its periphery.

Hereinafter, details of embodiments of the present invention will be described with reference to the drawings. Note that the embodiments and modifications described below may be combined as appropriate.

[1. Configuration of accessories]
FIG. 1 is a diagram illustrating an accessory 1 according to an embodiment. The accessory 1 includes a flexible string 2 and two fasteners 3 provided at both ends 21 of the string 2, respectively. When distinguishing between the two fasteners 3, one is called a fastener 3a and the other is called a fastener 3b.

The accessory 1 is, for example, a necklace, a bracelet, or an anklet, and is used while being wrapped around the body. Specifically, the accessory 1 is used in a state in which the string 2 is held in a loop by winding the string 2 around the body and fastening two fasteners 3 . The position of the body where the accessory 1 is wrapped is not particularly limited, and may be the waist or the like in addition to the neck, wrist, or ankle.

The string 2 is, for example, a solid string made of resin (specifically, made of silicone or urethane), but may partially include a metal chain. A plurality of (eight in FIG. 1) magnets 7 are embedded in the string 2 . When the accessory 1 is worn on the body, these magnets 7 are brought close to the body, so that the magnetic force acts on the body and the blood circulation is promoted, which is expected to have a good health effect such as the improvement of stiffness. . In this case, the accessory 1 also functions as a magnetic therapy device. Note that the string 2 may not have the magnet 7 embedded therein. In this case, the accessory 1 functions, for example, as a personal accessory.

The fastener 3a is detachably provided with respect to the fastener 3b, and the fastener 3a has a convex shape and the fastener 3b has a concave shape. The fastener 3a is attached to the fastener 3b by magnetic force, for example. The method of attaching the fastener 3a to the fastener 3b is not particularly limited. For example, the clasp 3a may be attached to the clasp 3b by a frictional force generated by fitting the convex shape of the clasp 3a into the concave shape of the clasp 3b.

[2. Structure of clasp]
FIG. 2 is a diagram illustrating a cross section of the fastener 3 and its surroundings according to the embodiment. In FIG. 2, the portion shown as a cross section is hatched. The fastener 3 includes a socket 4 , a pin 5 , a holding portion 6 , an attachment/detachment portion 8 and a ring 9 . Hereinafter, when distinguishing particularly, the holding portion 6 and the attaching/detaching portion 8 provided on the fastener 3a are referred to as the holding portion 6a and the attaching/detaching portion 8a, respectively, and the holding portion 6 and the attaching/detaching portion 8 provided on the fastener 3b are referred to as the holding portion 6b and the attaching/detaching portion 8, respectively. These are referred to as detachable portions 8b, respectively.

The socket 4 is a cylindrical member that covers the outer circumference 22 of the end 21 of the string 2 . The socket 4 may be a completely closed ring-shaped member, or may be a member whose circumferential portion is open at an angle of less than 180° (that is, substantially C-shaped). In any of these cases, the term “cylindrical” is used in the present disclosure. The socket 4 is made of resin, for example, but may be made of metal. When made of resin, the socket 4 is made of, for example, a relatively hard thermoplastic resin that has high impact resistance and abrasion resistance. For example, socket 4 may comprise PP (polypropylene), NY (nylon) or POM (polyoxymethylene).

The pin 5 is a cylindrical member that fixes the socket 4 to the string 2 . The pin 5 is made of metal, for example, but may be made of resin. When made of resin, the pin 5 is made of the same material as the socket 4, for example.

The holding part 6 is a member in which a cylindrical internal space S1 is formed, one side of which is closed. The holding portion 6 accommodates the end portion 21 of the string 2 , the pin 5 , and the socket 4 fixed to the end portion 21 of the string 2 by the pin 5 in the internal space S<b>1 . The holding portion 6 further accommodates the ring 9 in a recessed portion 64 provided on its outer periphery, and accommodates the detachable portion 8 in a recessed portion 65 provided at the end opposite to the internal space S1. The holding portion 6 is made of metal, for example, but may be made of resin. When made of resin, the holding portion 6 is made of the same material as the socket 4, for example.

The detachable parts 8a and 8b are magnets, for example. One of the detachable parts 8a and 8b may be a magnet and the other may be a metal such as iron that is attracted to a magnet. In this case, the attachment/detachment portions 8a and 8b are attracted to each other by magnetic force, thereby attaching the fastener 3a to the fastener 3b. Alternatively, one of the detachable portions 8a and 8b may have a convex shape and the other may have a concave shape that fits into the convex shape. In this case, the detachable portions 8a and 8b are fixed to each other by frictional force, thereby attaching the fastener 3a to the fastener 3b.

The ring 9 is an annular member made of resin (more specifically, made of rubber). The ring 9 has a function of decorating the fastener 3 and a function of preventing fingers from slipping when the user of the accessory 1 fastens and unfastens the fastener 3 .

[3. Assembling accessories]
FIG. 3 is a diagram illustrating fixing of the string 2 and the socket 4 by the pin 5 according to the embodiment. 3(a) is a perspective view of the string 2, the socket 4 and the pin 5 during assembly, and FIG. 3(b) is a sectional view of the string 2, the socket 4 and the pin 5 during assembly. The assembly of the accessory 1 is performed, for example, in the following order from (step ST1) to (step ST3). These steps may be performed manually, or by jigs or machines.

(Process ST1)
Attach the socket 4 to the end 21 of the string 2 (arrow AR1 in FIG. 3). Here, a first through hole 23 is formed in the end portion 21 of the string 2 so as to penetrate the end portion 21 in the radial direction. Second through holes 43 are formed in the socket 4 on one side in the radial direction and the other side in the radial direction so as to penetrate the socket 4 in the radial direction. When the socket 4 is attached to the end portion 21 , the first through hole 23 and the two second through holes 43 are communicated by positioning the string 2 and the socket 4 in the circumferential direction.

Here, the inner diameter D1 of the socket 4 is larger than the outer diameter D2 of the end portion 21 of the cord 2 (D1>D2). For example, the inner diameter D1 is about 0.1 to 0.2 mm larger than the outer diameter D2. Therefore, the socket 4 can be easily attached to the end portion 21 .

Further, the string 2 is not tightened by the socket 4, or the string 2 is hardly tightened by the socket 4 even if the outer diameter D2 of the string 2 is increased due to, for example, tolerance or thermal expansion. For this reason, a load that compresses the string 2 radially inward is hardly applied. Thus, damage to the string 2 can be suppressed. As a result, problems such as the string 2 breaking can be suppressed.

(Process ST2)
The pin 5 is formed in a second through hole 43 (also referred to as a second through hole 43a) formed on one side of the socket 4 in the radial direction, the first through hole 23 of the string 2, and the other side of the socket 4 in the radial direction. 3 (arrow AR2 in FIG. 3).

Here, the inner diameter W1 of the first through-hole 23 and the inner diameter W2 of the second through-hole 43 may be equal or either may be larger. Also, the outer diameter D3 (the diameter in the direction perpendicular to the insertion direction) of the pin 5 is equal to or slightly smaller than the smaller one of the inner diameters W1 and W2. For example, the outer diameter D3 is about 0.06 mm smaller than the smaller one of the inner diameters W1 and W2. As a result, since the pin 5 is accommodated in the first through hole 23 and the second through hole 43 with almost no clearance, rattling between the string 2 and the socket 4 can be suppressed.

Also, the length L1 of the pin 5 in the insertion direction (the direction of the arrow AR2) is longer than the inner diameter D1 of the socket 4 (L1>D1). Therefore, in a state in which one end portion 5a of the pin 5 projects from the cord 2 into the second through hole 43a, the other end portion 5b of the pin 5 projects from the cord 2 into the second through hole 43b. can be made

As a result, even if the string 2 is pulled out (the direction opposite to the arrow AR1), the ends 5a and 5b of the pin 5 are caught on the inner peripheral surfaces of the second through holes 43a and 43b of the socket 4, so that the string 2 is pulled out. It is possible to suppress the socket 4 from coming off. The pin 5 thus secures the socket 4 to the end 21 of the string 2 .

(Process ST3)
FIG. 4 is a diagram illustrating fixing of the string 2 and the holding portion 6 by the socket 4 according to the embodiment.
The socket 4 and the pin 5 are attached to the end portion 21 of the string 2 by the above step ST2. The combination of these ends 21, sockets 4 and pins 5 is called "assembly AS1". In step ST3, the assembly AS1 is press-fitted into the internal space S1 of the holding portion 6 in the arrow AR3 direction. The fastener 3 is assembled as described above.

Here, the internal space S<b>1 of the holding portion 6 is formed by the inner periphery 61 of the holding portion 6 . The inner periphery 61 includes a convex portion 62 that protrudes radially inward, and an opening 63 that opens in the direction in which the cord 2 is pulled out (the direction opposite to the arrow AR3).

The inside diameter of the inner circumference 61 behind the convex portion 62 (the direction in which the string 2 is inserted and the direction of the arrow AR3) is the "inner diameter D4", the narrowest inner diameter of the convex portion 62 in the radial direction is the "inner diameter D5", The inner diameter of the opening 63 is called "inner diameter D6". The inner diameter D5 is the smallest among the inner diameters D4, D5 and D6 (D5<D4, D5<D6). That is, the convex portion 62 protrudes most radially inward on the inner circumference 61 .

In the example of FIG. 4, the inner diameter D6 has a diameter greater than or equal to the inner diameter D5, and more specifically greater than the inner diameter D5 (D6>D5). Further, as the protrusion 62 approaches the opening 63, the inner diameter gradually widens from the inner diameter D5 to the inner diameter D6. By forming the inner diameter D6 to be larger, it is possible to make it easier to put the assembly AS1 into the internal space S1. Further, by forming the inner periphery 61 that is inclined from the inner diameter D5 to the inner diameter D6, it is possible to easily insert the assembly AS1 into the internal space S1. In addition, the inner diameter D6 may be the same diameter as the inner diameter D5, or may be smaller than the inner diameter D5.

Here, the socket 4 includes a step portion 41 and a lid portion 42 . The stepped portion 41 is a projecting portion that is formed over the entire circumferential direction so as to protrude radially outward on the outer periphery of the socket 4 . In addition, the step part 41 may be intermittently formed, for example in the circumferential direction. The lid portion 42 is located in the direction in which the cord 2 is pulled out from the stepped portion 41, and is a portion that fills the space between the opening 63 and the cord 2 (specifically, the outer circumference 22 of the end portion 21). The second through hole 43 is formed deeper than the stepped portion 41 (in the direction in which the string 2 is inserted).

The largest outer diameter D7 of the stepped portion 41 is larger than the inner diameter D5 and equal to or smaller than the inner diameters D4 and D6 (D7>D5, D7≤D4, D7≤D6). Therefore, when the assembly AS1 is press-fitted into the internal space S1 of the holding portion 6, the stepped portion 41 comes into contact with the side of the convex portion 62 near the opening 63, elastically deforms, and enters in the direction of the arrow AR3 while flexing radially inward. Then, after the stepped portion 41 passes over the convex portion 62, the bending of the stepped portion 41 is slightly restored, so that the stepped portion 41 is positioned on the far side of the convex portion 62 as shown in FIG.

In this state, the outer diameter D7 is equal to or smaller than the inner diameter D4, so the stepped portion 41 hardly contacts the inner circumference 61 after press-fitting. Therefore, the socket 4 is not subjected to a constant load in the radial direction. Therefore, it is possible to suppress damage to the socket 4 . Further, after press-fitting, the socket 4 can be made rotatable in the circumferential direction with respect to the holding portion 6 . That is, the fastener 3 can be rotated in the circumferential direction with respect to the cord 2 . For example, if the fastener 3 also functions as a pendant top, the user can rotate the fastener 3 after wearing the accessory 1 to position the fastener 3 at a suitable position in the circumferential direction.

Note that the outer diameter D7 may be larger than the inner diameter D4. In this case, after press-fitting, the stepped portion 41 contacts the inner periphery 61 in the radial direction with a predetermined interference. For example, outer diameter D7 may be 0.1 mm larger than inner diameter D4. In this case, the stepped portion 41 contacts the inner circumference 61 with an interference of 0.1 mm. As a result, it is possible to prevent the socket 4 from rotating in the circumferential direction with respect to the holding portion 6 after press-fitting.

Since the outer diameter D7 is larger than the inner diameter D5, when the cord 2 is pulled out, the socket 4 (specifically, the stepped portion 41) contacts the convex portion 62 in the direction in which the cord 2 is pulled out. Socket 4 is prevented from coming off from holding portion 6 .

In addition, since the pin 5 penetrates the string 2 and the socket 4 in the radial direction, when the string 2 is pulled out in a direction to be pulled out, the string 2 is hooked to the socket 4 via the pin 5, and the string 2 is pulled out of the socket 4. Restricted from coming off.

In this manner, the fastener 3 prevents the fastener 3 from coming off the cord 2 by hooking the socket 4 on the convex portion 62 and hooking the string 2 on the socket 4 via the pin 5 . In particular, since the string 2 is fixed to the socket 4 by the pin 5 inserted in the radial direction, rather than by radially biting into the socket 4, the fixation of the string 2 and the socket 4 over time will be difficult. is difficult to loosen. Therefore, it is possible to more reliably prevent the fastener 3 from coming off the cord 2 .

Furthermore, when the socket 4 is bitten into the string 2, in order to increase the frictional force between the socket 4 and the string 2, it is necessary to secure a large contact area between the socket 4 and the string 2 in the direction of the arrow AR3. There is For this reason, the length of the fastener 3 in the direction of the arrow AR3 tends to be long in the bite-in method, and the fastener 3 in the accessory 1 cannot be made compact. On the other hand, when the string 2 is fixed to the socket 4 by the pin 5, it is sufficient to secure a retaining margin to which the pin 5 is hooked. length can be shortened. As a result, the clasp 3 in the accessory 1 can be made compact, the aesthetic appearance of the accessory 1 can be improved, and the weight of the accessory 1 can be reduced.

Further, when the string 2 is fixed to the socket 4 by the pin 5, the pin 5 also hangs on the socket 4 in the circumferential direction, so that the string 2 can be prevented from rotating in the circumferential direction with respect to the socket 4. .

Here, the length L1 of the pin 5 is shorter than the inner diameter D5 (L1<D5). Therefore, when the assembly AS1 is press-fitted into the internal space S1, the socket 4 contacts the protrusion 62 and is elastically deformed, while the pin 5 can pass through the protrusion 62 without elastic deformation. As a result, damage to the pin 5 due to deformation of the pin 5 in the direction of the arrow AS3 can be suppressed.

Also, the pin 5 is made of a material harder than the string 2 and the socket 4, for example. By configuring in this way, deformation of the pin 5 is suppressed when the string 2 is pulled out, so that the string 2 can be more reliably prevented from coming off the socket 4 . Even if the pin 5 is made harder, the assembly AS1 can be easily press-fitted by making the length L1 shorter than the inner diameter D5.

The pin 5 is accommodated in the internal space S1 by press-fitting the assembly AS1. Therefore, even if the pin 5 moves in the radial direction, the pin 5 abuts against the inner circumference 61 and does not drop out of the holding portion 6 . Therefore, it is possible to prevent the pin 5 from coming off from the cord 2 and the socket 4, and to prevent the fastener 3 from becoming defective due to the pin 5 coming off.

The lid portion 42 fills the space (clearance) between the opening 63 and the string 2 in a state where the assembly AS1 is press-fitted. Therefore, foreign matter such as dust can be prevented from entering the internal space S<b>1 through the gap between the opening 63 and the string 2 .

[4. Modification]
Modifications of the embodiment will be described below. In the modified example, the same reference numerals are given to the same configurations as in the embodiment, and the description thereof is omitted.

FIG. 5 is a diagram illustrating a cross section of a fastener 3c and its surroundings according to a modification. In the above embodiment, the second through hole 43 is formed on the deep side of the stepped portion 41 . On the other hand, the second through hole 43 in the modified example is formed on the front side of the stepped portion 41 (in the direction in which the string 2 is pulled out). For example, the second through hole 43 is formed in the lid portion 42 .

With this configuration, the length from the stepped portion 41 to the distal end of the socket 4 can be further shortened. As a result, the length of the fastener 3 in the arrow AR3 direction (the length in the left-right direction in FIG. 5) can be shortened, so that the fastener 3 in the accessory 1 can be made compact.

Also, in this case, since the pin 5 does not need to pass through the convex portion 62, the length L1 of the pin 5 can be made longer than the inner diameter D5 (L1>D5). As a result, when the string 2 is pulled in the pulling direction, the pin 5 is more reliably hooked on the socket 4, so that the string 2 can be more reliably prevented from coming out of the socket 4. - 特許庁Since the length L1 of the pin 5 is, for example, smaller than the inner diameter D6 (L1<D6), deformation of the pin 5 due to contact with the opening 63 can be suppressed.

[5. Summary of the present invention]
A part of the present invention is summarized below.

(1) The fastener 3 of the accessory 1 according to the present invention is provided at the end 21 of the string 2 and holds the string 2 wound around the body. A cylindrical socket 4 covering an outer periphery 22, a pin 5 for fixing the socket 4 to the end portion 21, and an internal space S1 are formed. a holding portion 6 that accommodates the socket 4 in a fixed state, and the socket 4 holds the string 2 against a convex portion 62 projecting radially inward on an inner circumference 61 of the holding portion 6. The pin 5 is in contact with the portion 6 in the direction of pulling out, and the pin 5 has a first through-hole 23 radially penetrating the string 2 and a second through-hole 23 radially penetrating the socket 4 and communicating with the first through-hole 23 . The length L 1 of the pin 5 in the insertion direction is longer than the inner diameter D 1 of the socket 4 .

With this configuration, the socket 4 is hooked on the protrusion 62 and the string 2 is hooked on the socket 4 via the pin 5 , thereby preventing the fastener 3 from coming off the string 2 . In particular, since the string 2 is fixed to the socket 4 by the pin 5 inserted in the radial direction, rather than by radially biting into the socket 4, the fixation of the string 2 and the socket 4 over time will be difficult. is difficult to loosen. Therefore, it is possible to more reliably prevent the fastener 3 from coming off the cord 2 .

(2) In the fastener 3 , the inner diameter D<b>1 of the socket 4 may be larger than the outer diameter D<b>2 of the end portion 21 .

By configuring in this way, almost no load is applied to the string 2, so damage to the string 2 can be suppressed.

(3) In the fastener 3, the inner diameter D6 of the opening 63 in the pull-out direction of the holding portion 6 is equal to or larger than the inner diameter D5 of the projection 62, and the socket 4 protrudes radially outward from the outer circumference of the socket 4 to extend the projection 62. and a lid portion 42 positioned in the pulling direction from the stepped portion 41 and filling the space between the opening 63 and the cord 2 .

By configuring in this way, it is possible to prevent foreign matter such as dust from entering the internal space S1 through the gap between the opening 63 and the cord 2 while preventing the socket 4 from slipping out of the holding portion 6 .

(4) An accessory 1 comprising a fastener 3 according to any one of (1) to (3) above and a cord 2 .

[6. Addendum]
The embodiments disclosed this time are illustrative in all respects and are not restrictive. The scope of rights of the present invention is indicated by the scope of claims rather than the above-described embodiments and modifications, and includes equivalent meanings and all modifications within the scope of the scope of claims.

1 Accessory 2 String 21 End 22 Perimeter 23 First Through Hole 3 Fastener 4 Socket 41 Step 42 Lid 43 Second Through Hole 5 Pin 6 Holding Part 61 Inner Periphery 62 Projection 63 Opening 7 Magnet 8 Detachable Part 9 Ring AS1 assembly S1 internal space

Claims (4)

A fastener for an accessory that is provided at the end of a string and holds the string wrapped around the body,
a cylindrical socket that covers the outer periphery of the end;
a pin that secures the socket to the end;
a holding portion having an internal space and accommodating the end portion, the pin, and the socket fixed to the end portion by the pin in the internal space;
with
the socket contacts a projection protruding radially inward on the inner periphery of the holding portion in a direction in which the string is pulled out from the holding portion;
The pin is inserted into a first through hole radially penetrating the string and a second through hole radially penetrating the socket and communicating with the first through hole,
The length of the pin in the insertion direction is longer than the inner diameter of the socket,
Fastener. the inner diameter of the socket is greater than the outer diameter of the end;
2. A fastener according to claim 1. The inner diameter of the opening of the holding portion in the pulling direction is equal to or greater than the inner diameter of the convex portion,
The socket is
a stepped portion that protrudes radially outward from the outer circumference of the socket and contacts the convex portion;
a lid portion that is located in the pull-out direction relative to the stepped portion and that fills the space between the opening and the cord;
including,
3. A fastener according to claim 2. a fastener according to any one of claims 1 to 3;
the string;
, trinkets.

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