JP7539724B2 - Pin fastener and accessory using the same - Google Patents

Description

The present invention relates to a pin fastener for attaching and detaching pins from pin-fastened decorative items such as earrings and necktie clasps, and to an ornament using the same.

Conventionally, pin fasteners of this type are already known, for example, as described in Patent Documents 1 to 6.
Patent document 1 discloses a locking device for an ornament, which has a storage section within a case large enough to allow the pin catch to fit in the case so that it can move longitudinally, and a locking edge is provided at the upper end of this storage section so that the diameter is smaller than the diameter of the hollow body of the pin catch, and the hollow body of the pin catch is movably stored within the storage section, with the locking edge positioned between the end of the hollow body and the knob portion and assembled together as a single unit.
Patent Document 2 discloses a fastener for an ornament that can hold pins of different outer diameters. The fastener has a guide tube with a tapered portion formed on its inner wall surface within a housing that has an opening at the bottom center for inserting a pin, and in the inner space of the guide tube, there is disposed a sphere pressing member that has three or more spheres and a flange member whose underside contacts the spheres and is constantly urged by an elastic body toward the opening for inserting the pin.
Patent Document 3 discloses a fastener for an ornamental body, the fastener comprising a housing consisting of one case portion having a pin hole for inserting and removing a pin provided on the ornamental body, and another case portion having an opening provided directly opposite the pin hole, the housing housing containing a truncated cone-shaped guide having a small diameter portion and a large diameter portion, and a cylindrical one-side member having a pin introduction path for introducing a pin through a pin introduction hole facing the pin hole and a truncated cone-shaped small ball holder portion whose outer circumferential surface contacting the inner circumferential surface of the guide has a cylindrical support portion fixed to the one-side member and a knob portion continuous with the support portion, the other-side member being fixed to the outside of the one-side member, and a coil spring which presses and biases the movable operating body in the direction of the pin hole, the truncated cone-shaped inner circumferential surface of the guide and the truncated cone-shaped outer circumferential surface of the small ball holder portion being in contact with the central axis of the guide and the central axis of the small ball holder portion at the same taper angle within the range of 10 to 20 degrees.
Patent Document 4 discloses a pin fastener that includes an inner cylindrical body into which a pin is inserted, a loaded coil spring provided on the outer periphery of the inner cylindrical body, and an outer cylindrical body surrounding the outer periphery of the coil spring, and in which the pin fastening member is moved and displaced between a pinned position and a pin release position by relative movement of the inner cylindrical body and the outer cylindrical body against the biasing force of the coil spring. The pin fastener has adjacent flanges on the inner cylindrical body and the outer cylindrical body, and an annular press-in member made of an elastically deformable soft material is provided on the outer periphery of the boundary between the two flanges.
Patent Document 5 discloses a safe and comfortable pin fastening fitting which comprises a cylindrical body into which a pin is inserted, a coil spring wound around the outer circumference of the cylindrical body, and an outer cylindrical body surrounding the outer circumference of the cylindrical body and the coil spring, with the cylindrical body having diagonally curved or polygonal groove-like or window-like cuts into which the straight fastening part of the coil spring is fitted, thereby forming a narrowed part for fastening the pin between the fastening part and the opposing wall part of the cylindrical body, so that even with pins of different thicknesses, the locking force is uniform, thin pins will not fall out, and thick pins are easy to unlock.
Patent Document 6 discloses a fastener for ornaments with a fastening pin, which is clamped by a number of locking balls that contain a fastening pin provided on the ornament, and which can be made compact, can be easily attached and detached by the wearer, and is less likely to malfunction.As a means of solving the problem of providing a fastener for ornaments with a fastening pin, the fastener for the ornaments being comprised of a housing consisting of one side case and the other side case, a guide, a movable operating body consisting of one side member and the other side member formed by a locking ball holding portion and a support portion, a coil spring, and a locking ball.

Utility Model Registration No. 2576220 (Examples, Figs. 1 and 2) Japanese Patent No. 4167703 (Best Mode for Carrying Out the Invention, Figs. 1 and 2) Japanese Patent No. 4560588 (Best Mode for Carrying Out the Invention, Figs. 2 and 4) JP 2013-048682 A (Form for carrying out the invention, FIG. 5) Japanese Patent No. 6303171 (Detailed Description of the Invention, Figure 2) Japanese Patent No. 4999214 (Form for carrying out the invention, FIG. 1)

With this type of pin fastener, if the pin-fastened ornament does not hold the pin well, the pin-fastened ornament can easily come off the pin fastener, raising concerns that users may unknowingly lose their favorite pin-fastened ornament.
Therefore, there is a demand for a design in which the pin-on ornament is not easily detached from the pin fastener when it is attached.
Furthermore, since pin fasteners are also part of accessories, importance should be placed on functionality, operability, and also on external design, but in terms of design, there has been a tendency to focus primarily on miniaturization and lightweight design.
However, with conventional pin fasteners, there is a strong tendency to make the external design less eye-catching due to the trend towards smaller size and lighter weight, and there is concern that the external design is being neglected.
Furthermore, when attaching a pin-fastened jewelry, if the pin fastener's ability to hold the pin is increased too much, the operability of attaching and removing the pin, in particular the operation of removing the pin-fastened jewelry from the pin fastener, tends to become difficult.
All of the pin fasteners described in Patent Documents 1 to 6 still have shortcomings in terms of achieving both the ability to hold the pin of the pin-fastened ornament when worn and the ease of attaching and removing the pin.

The technical problem that this invention aims to solve is to maintain good operability in attaching and detaching the pins of a pin-fastened ornamental body when attaching and detaching the pins, while making it possible to realize a diversity of exterior designs.

The first technical feature of the present invention is a pin fastener to which a pin of a pin-fixed decorative object is removably attached, comprising: an inner casing having a pin insertion hole on the side where the pin is inserted and a hollow portion leading to the pin insertion hole; a bottomed cavity portion opening to the side where the pin is inserted, in which the inner casing is slidably stored in contact with the bottom of the cavity portion; an outer circumferential cover covering the outer circumferential portion of the inner casing; a biasing element which biases the inner casing in the direction of inserting the pin against the bottom of the cavity portion of the outer circumferential cover; and a pin clamping element which is provided in the hollow portion of the inner casing and which clamps the pin while moving the inner casing in the withdrawal direction relative to the outer circumferential cover when the pin is inserted into the pin insertion hole, and which releases the clamped state of the pin while moving the inner casing in the withdrawal direction relative to the outer circumferential cover when the pin is pulled out from the clamped state.

A second technical feature of the present invention is a pin fastener having the first technical feature, characterized in that the inner housing has a pin receiving element provided on the opposite side of the hollow portion from the pin insertion hole, and receives the inserted pin.
A third technical feature of the present invention is a pin fastener having the first or second technical feature, characterized in that the outer peripheral cover has an insertion hole for the pin at the bottom of the hollow portion.
A fourth technical feature of the present invention is a pin fastener having any one of the first to third technical features, wherein the pin clamping element has an inclined surface that forms the inner wall surface of the hollow portion of the inner housing so as to reduce in diameter toward the pin insertion hole, and a plurality of spheres that are accommodated so as to be slidable along the inclined surface, and the pin is clamped by the plurality of spheres that slide along the inclined surface when the pin is inserted into the pin insertion hole.
A fifth technical feature of the present invention is a pin fastener having the fourth technical feature, characterized in that the pin clamping element is slidably arranged within the hollow portion of the inner housing, and within the hollow portion, the multiple spheres are kept non-contact in the central portion along the center line of the outer peripheral cover, and a sphere holder is provided which restricts movement of the outer peripheral cover in the direction of the center line while allowing movement at least in the radial direction of the radial and circumferential directions of the outer peripheral cover.
A sixth technical feature of the present invention is a pin fastener having the first or second technical feature, characterized in that the inner housing is stored within the hollow portion so as not to protrude from the outer surface of the outer peripheral covering when the pin is not inserted.
A seventh technical feature of the present invention is a pin fastener having the sixth technical feature, characterized in that the inner housing has a surface portion that faces the opening of the hollow portion of the outer peripheral cover and is continuous with the outer surface portion of the outer peripheral cover when the pin is not inserted.
An eighth technical feature of the present invention is a pin fastener having the first technical feature, characterized in that the outer peripheral cover has an outer periphery covered with a decorative cover body.
A ninth technical feature of the present invention is a pin fastener having the eighth technical feature, characterized in that the outer peripheral cover comprises a cover body having the hollow portion, and a decorative cover body having a concave receiving portion into which the cover body is incorporated and covering the outer periphery of the cover body.
A tenth technical feature of the present invention is a pin fastener having the eighth technical feature, characterized in that the outer peripheral cover is fixed to the periphery of the entrance of the decorative cover body so as to surround the periphery of the entrance, and is provided with a decorative accessory part having a circular cross-sectional through hole leading to the hollow portion.

An eleventh technical feature of the present invention is an ornament comprising a pin-on decorative body and a pin fastener as described in any one of claims 1 to 10, to which the pin of the pin-on decorative body is removably attached and which fastens the pin-on decorative body to the part to which it is attached with the pin inserted into the pin hole of the part to which it is attached.
A twelfth technical feature of the present invention is an ornament comprising a pin receiver ornament as a pin-fixed ornament, a pin fastener as described in any one of claims 1 to 10 which is incorporated into a hollow portion of the pin receiver ornament so as to open at least a portion thereof, and a pin part which is removably inserted into the pin fastener.

According to the first technical feature of the present invention, when attaching and detaching the pin of a pin-fastened ornament, good operability for attaching and detaching the pin can be maintained, and diversity in external design can be achieved.
According to the second technical feature of the present invention, the insertion direction of the pin into the pin fastener can be guided, and the pin insertion operation can be stabilized, compared to an embodiment not having a pin receiving element.
According to the third technical feature of the present invention, the outer shape of the outer peripheral cover can be made smaller than in an embodiment in which the outer peripheral cover does not have a pin insertion hole, making it easy to reduce the size of the pin fastener.
According to the fourth technical feature of the present invention, when inserting and removing a pin, the pin can be clamped and released while moving the inner casing in the pull-out direction.
According to the fifth technical feature of the present invention, when clamping the pin of a pin-fixed decorative object, the multiple spheres that serve as the pin clamping elements can be prevented from becoming immobile inside the inner cylindrical body, and the clamping operation on the pin can be performed smoothly.
According to the sixth technical feature of the present invention, it is possible to provide a pin fastener having a shape with fewer external protrusions compared to an embodiment in which the inner casing protrudes from the outer surface of the outer peripheral cover.
According to the seventh technical feature of the present invention, the inner housing can be housed in the hollow portion of the outer peripheral cover while maintaining the outer surface portion of the outer peripheral cover flush with the inner housing.
According to an eighth technical feature of the present invention, the pin fastener can also be used as a part of an ornament.
According to the ninth technical feature of the present invention, a pin fastener that can be used as a part of an ornament can be easily constructed.
According to the tenth technical feature of the present invention, the decorativeness of the pin fastener that can be used as part of a decorative body can be further improved compared to when no decorative accessory part is used.
According to an eleventh technical feature of the present invention, it is possible to provide an ornament including a pin fastener that maintains good operability in attaching and removing the pin of a pin-fastened ornament and that can achieve diversity in appearance design when attaching and removing the pin.
According to the twelfth technical feature of the present invention, a pin fastener can be built into a pin receiver ornament as a pin-fastened ornament, thereby providing an ornament including a pin fastener that maintains good operability for attaching and removing the pin and allows for diversity in exterior design.

(a) is an explanatory diagram showing the pin fastener in the state before a pin-fastened jewelry is attached, as an outline of an embodiment of a pin fastener to which the present invention is applied, and (b) is an explanatory diagram showing the pin fastener in the state when a pin-fastened jewelry is attached, as an outline of an embodiment of the same pin fastener. 1A is an explanatory oblique view showing the state of the pin fastener of embodiment 1 before the pin-equipped jewelry is attached, and FIG. 1B is an explanatory cross-sectional view thereof. (a) to (d) show the components of the pin fastener of embodiment 1, where (a) is a cross-sectional explanatory diagram showing the outer cover and pin receiving cylinder, (b) is a cross-sectional explanatory diagram showing the inner cylinder, (c) is an explanatory diagram showing the biasing spring, and (d) is an explanatory diagram showing a number of spheres that hold the pins of the pin-equipped decorative body. (a) is an explanatory diagram showing the configuration of the sphere storage section formed on the inner surface of the inner cylinder, (b) is a cross-sectional explanatory diagram cut along line B-B in (a), (c) is a cross-sectional explanatory diagram similar to (b) showing the state immediately after starting to insert the pin of the pin-attached decorative object into the pin fastener, and (d) is a cross-sectional explanatory diagram similar to (b) showing the state in which the pin of the pin-attached decorative object is clamped between multiple spheres after being inserted into the pin fastener. 1A to 1E are explanatory diagrams showing the process (I) of attaching and detaching a pin-attached jewelry to and from a pin fastener according to embodiment 1. 1A to 1E are explanatory diagrams showing the process (II) of attaching and detaching a pin-attached jewelry to a pin fastener according to embodiment 1. (a) is an explanatory diagram showing an example of the configuration of a pin of a pin-attached decorative item, (b) is an explanatory diagram showing the relative relationship between the sphere of the pin fastener and the pin immediately after starting to remove the pin-attached decorative item attached to the pin fastener, (c) is an explanatory diagram showing the state where the sphere of the pin fastener has reached the groove portion of the pin during the process of removing the pin-attached decorative item from the pin fastener, (d) is an explanatory diagram showing the gap in the passage portion surrounded by multiple spheres, and (e) is an explanatory diagram showing typically the state in which the sphere presses against the inclined surface when the pin is inserted into the gap between multiple spheres. (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 2 before the pin-attached jewelry is attached, and (b) is a cross-sectional explanatory diagram showing the state when the pin-attached jewelry is removed from the same pin fastener. 1A is a cross-sectional explanatory diagram showing an outer peripheral cover and a pin receiving cylindrical body, which are components of a pin fastener in accordance with embodiment 2; FIG. 1B is an oblique explanatory diagram of the outer peripheral cover shown in FIG. 1A; and FIG. 1C is an oblique explanatory diagram of the pin receiving cylindrical body shown in FIG. 1A is an explanatory diagram showing an inner cylindrical body and a sphere holder which are components of a pin fastener in accordance with embodiment 2; FIG. 1B is an explanatory diagram showing the cylindrical main body of the inner cylindrical body shown in FIG. 1A; and FIG. 1C is an explanatory diagram showing the cover member of the inner cylindrical body. (a) is an explanatory diagram showing the sphere holder of Figure 10 (a) and a sphere held in the sphere holder, (b) is an explanatory diagram showing the state after the sphere has been removed from the sphere holder shown in (a), (c) is an arrow view seen from direction C in (a), and (d) is an oblique explanatory diagram of the sphere holder seen from direction D shown in (c). (a) is a cross-sectional explanatory diagram showing the state of the pin fastener in a deformed form of the pin fastener in embodiment 2 before the pin-attached jewelry is attached, and (b) is a cross-sectional explanatory diagram showing the state when the pin-attached jewelry of the same pin fastener is removed. (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 3 before the pin-attached jewelry is attached, and (b) is a cross-sectional explanatory diagram showing the state when the pin-attached jewelry is removed from the same pin fastener. (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 4 before a pin-equipped jewelry is attached, and (b) is an oblique explanatory diagram of the pin receiving cylinder and sphere holder, which are components of the pin fastener. (a) is a cross-sectional explanatory diagram showing the state halfway through when removing the pin-attached decorative piece from the pin fastener of embodiment 4, and (b) is a cross-sectional explanatory diagram showing the state after (a) when removing the pin-attached decorative piece from the same pin fastener. (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 5 before a pin-attached jewelry piece is attached, and (b) is a cross-sectional explanatory diagram showing the state of the same pin fastener when a pin-attached jewelry piece is attached. 13 is an explanatory cross-sectional view showing components of a pin fastener according to embodiment 5. FIG. 10A is a cross-sectional explanatory diagram showing an outer peripheral cover and a pin receiving cylinder body which are components of a pin fastener in accordance with embodiment 5, and FIG. 10B is a view seen from the direction indicated by the arrow B in FIG. 1A is a cross-sectional explanatory diagram showing an inner cylinder body which is a component part of a pin fastener, and FIG. 1B is a view taken along the arrow B in FIG. 13A to 13F are cross-sectional explanatory diagrams showing the process of removing a pin-attached decorative object from a pin fastener of embodiment 5. (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 6 before a pin-attached jewelry piece is attached, and (b) is a cross-sectional explanatory diagram showing the state of the same pin fastener when a pin-attached jewelry piece is attached. (a) is an explanatory diagram showing the main parts of a pin fastener in embodiment 7, (b) is an explanatory diagram showing the relationship between the pin fastener and a pin-attached decorative object, and (c) is an arrow view seen from the C direction in (b). 13A is a cross-sectional explanatory view showing an example of a pin fastener used in the seventh embodiment, and FIG. 13B is a cross-sectional explanatory view showing another example of the same pin fastener. 13A is an explanatory diagram of a pin fastener according to an eighth embodiment as viewed from the front, and FIG. 13B is an explanatory cross-sectional diagram taken along line B-B in FIG. 24(a) is a view taken along the line R in FIG. 24(a), and FIG. 24(b) is a view taken along the line L in FIG. 24(a). (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 8 before a pin-attached jewelry piece is attached, and (b) is a cross-sectional explanatory diagram showing the state of the same pin fastener when a pin-attached jewelry piece is attached. (a) is an oblique explanatory diagram showing the appearance of the pin fastener when the pin-attached jewelry shown in Figure 26 (b) is attached, and (b) is a cross-sectional explanatory diagram showing the state when the pin-attached jewelry is removed from the pin fastener of embodiment 8. 13A is an explanatory diagram showing an example of an ornament relating to embodiment 9 in which a pin fastener is built into a pin receiving ornament, (b) is a cross-sectional explanatory diagram showing an example of the pin fastener used in (a), and (c) is an explanatory diagram showing an example of an ornament relating to embodiment 9 applied to a jewelry-exchange type finger ring.

Overview of the embodiment Generally, accessories such as earrings and necktie clips are provided with a pin-on jewelry 10 and a pin fastener 1 to which a pin 11 of the pin-on jewelry 10 is detachably attached and which fastens the pin-on jewelry 10 with the pin 11 inserted into the pin hole of the part to be attached, as shown in Fig. 1(a). The pin-on jewelry 10 here means a jewelry to be pinned, and broadly includes not only jewelry with a pin but also jewelry with a pin. In addition, the pin 11 is not limited to those with a curved tip, but also includes those with a sharp needle-like shape.
The pin fastener 1 shown in Figure 1 (a) is a schematic representation of an outline of an embodiment to which the present invention is applied, and shows the state before the pin 11 of the pin-fastened jewelry 10 is attached.
In this example, the pin fastener 1 has an inner casing 2 having a pin insertion hole 2a on the side where the pin 11 is inserted and a hollow portion 2b leading to the pin insertion hole 2a, a bottomed cavity 3a that opens to the side where the pin 11 is inserted, and the inner casing 2 is stored within the cavity 3a so that it can slide in contact with the bottom of the cavity 3a, an outer peripheral cover 3 that covers the outer peripheral portion of the inner casing 2, a biasing element 4 that biases the inner casing 2 in the insertion direction of the pin 11 against the bottom of the cavity 3a of the outer peripheral cover 3, and a pin clamping element 5 that is provided in the hollow portion 2b of the inner casing 2 and clamps the pin 11 while moving the inner casing 2 in the pull-out direction relative to the outer peripheral cover 3 when the pin 11 is inserted into the pin insertion hole 2a, and when the pin 11 is pulled out from the clamped state, releases the clamped state of the pin 11 while moving the inner casing 2 in the pull-out direction relative to the outer peripheral cover 3.

In such technical means, the inner housing 2 and the outer peripheral cover 3 may be made of any material, but may be made of metal such as SUS.
In this example, the inner housing 2 only needs to have a pin insertion hole 2a and a hollow portion 2b, and the inner housing 2 may be composed of a single part or may be composed of a combination of multiple parts.
The outer circumferential cover 3 has a hollow portion 3a in which the inner housing 2 is slidably housed, and broadly includes a case in which the inner housing 2 is housed in the hollow portion 3a so as to cover the outer circumferential portion of the inner housing 2. Here, the inner housing 2 may be completely housed in the hollow portion 3a of the outer circumferential cover 3, or a case in which a part of the inner housing 2 is disposed protruding from the hollow portion 3a is also included. However, in the latter case, it is preferable to select the outer circumferential cover 3 so that the protruding portion of the inner housing 2 does not protrude outward from the periphery of the end of the opening 3b of the outer circumferential cover 3 when the user grasps the outer circumferential cover 3 of the pin fastener 1. The outer circumferential cover 3 may have any shape, such as a cylindrical shape, a spherical shape, a star shape, or the like.

Furthermore, the biasing element 4 biases the inner housing 2 toward the insertion direction of the pin 11 relative to the hollow portion 3a of the outer peripheral cover 3, and when the inner housing 2 moves in the withdrawal direction, it functions to return the inner housing 2 to the hollow portion 3a of the outer peripheral cover 3 when the pin 11 is removed.
Furthermore, the pin clamping element 5 clamps the pin 11 inserted through the pin insertion hole 2a of the inner casing 2 and releases the clamped state of the pin 11 when the pin 11 is pulled out; it only needs to have the function of clamping the pin 11 or releasing the clamped state of the pin 11 while moving the inner casing 2 in the pull-out direction when the pin 11 is inserted or pulled out, and may be, for example, a configuration formed by a combination of a plurality of spheres 5a and an inclined surface 5c formed on the peripheral wall surface of the hollow portion 2b of the inner casing 2, or may further be a configuration using a sphere holder 5b that holds the spheres 5a in a slidable manner.

The pin fastener 1 according to this embodiment is used as follows.
First, the case where the pin-fastened ornamental body 10 is attached to the pin fastener 1 will be described. As shown in FIG. 1(a), the pin 11 of the pin-fastened ornamental body 10 may be inserted into the pin insertion hole 2a of the inner housing 2. At this time, the pin 11 is inserted into the inner housing 2 from the pin insertion hole 2a and reaches the pin clamping element 5 built into the inner housing 2. Here, assuming that the pin clamping element 5 is, for example, composed of a plurality of spheres 5a and an inclined surface 5c, the pin 11 advances through the passage portion surrounded by the plurality of spheres 5a, and the plurality of spheres 5a are pushed outward by the pin 11 and slide along the inclined surface 5c formed on the inner wall surface of the hollow portion 2b. At this time, a pressing force acts on the inclined surface 5c from the plurality of spheres 5a in a direction perpendicular to the inclined surface 5c, and a part of the inner housing 2 is pulled out as shown by the virtual line in FIG. 2(a) by the component of the pressing force in the direction of pulling out the pin 11. Then, the pin 11 passes through the passage surrounded by the plurality of spheres 5a, and when the plurality of spheres 5a are pressed against a predetermined position on the inclined surface 5c, the pin 11 is clamped. As a result, the pin 11 of the pin-fastened ornament 10 is held in a restrained state within the pin fastener 1.

Conversely, when removing the pin-fixed decorative body 10 from the pin fastener 1, as shown in FIG. 1(b), the pin 11 of the pin-fixed decorative body 10 can be pulled out in the direction of the arrow. At this time, since the pin clamping element 5 clamps the pin 11, when the pin 11 is pulled out in the pulling direction, the inner housing 2 is pulled out from the outer periphery cover 3 against the biasing force of the biasing element 4, and the inclined surface 5c of the inner housing 2 is displaced in the pulling direction, reducing the sliding resistance between the multiple spheres 5a and the inclined surface 5c. As a result, the clamping force of the multiple spheres 5a on the pin 11 is weakened, and the pin 11 is pulled out from the pin clamping element 5. When removing the pin-fixed decorative body 10, if the pin 11 to be pulled out is caught in the pin clamping element 5 of the pin fastener 1, the pin 11 can be pushed in once while rotating and then pulled out again.

Next, a representative or preferred embodiment of the present invention will be described.
First, a preferred embodiment of the inner housing 2 is one having a pin receiving element 6 that is provided in the hollow portion 2b on the opposite side to the pin insertion hole 2a and receives the inserted pin 11.
In this example, a pin receiving element 6 is added to the hollow portion 2b of the inner housing 2 on the opposite side to the pin insertion hole 2a. Here, the pin receiving element 6 may be provided in the hollow portion 2b of the inner housing 2, and may be fixed to the inner housing 2, or may be provided on the outer peripheral cover 3 side and protrude relatively movably into the inner housing 2 through a through hole at the end of the inner housing 2. The pin receiving element 6 provided on the outer peripheral cover 3 side may penetrate the center of the bottom of the outer peripheral cover 3 and protrude to the outside, or may penetrate but not protrude to the outside, or may not penetrate at all. The method of fixing the pin receiving element 6 to the center of the bottom of the outer peripheral cover 3 may be appropriately selected from the screw type, brazing, etc.

A preferred embodiment of the outer peripheral cover 3 is one in which the bottom of the hollow portion 3a has an insertion opening 3c for the pin 11. This embodiment allows the tip side of the pin 11 inserted into the pin fastener 1 to be inserted through the insertion opening 3c of the outer peripheral cover 3, and is preferable in that it allows the outer shape of the outer peripheral cover 3 to be made smaller than an embodiment in which the outer peripheral cover 3 does not have an insertion opening 3c for the pin 11.

Furthermore, a representative embodiment of the pin clamping element 5 includes, as described above, an embodiment having an inclined surface 5c that forms the inner wall surface of the hollow portion 2b of the inner housing 2 so as to reduce in diameter toward the pin insertion hole 2a, and a plurality of spheres 5a that are accommodated slidably along the inclined surface 5c, and that clamps the pin 11 between the plurality of spheres 5a that slide along the inclined surface 5c when the pin 11 is inserted into the pin insertion hole 2a. The inclination degree of the inclined surface 5c may be appropriately selected, but if the inclination angle of the inclined surface 5c based on the center line direction of the hollow portion 3a of the outer peripheral cover 3 is θ, it is preferable to select it to be about 10° to 20°. If θ is selected to be less than 10°, the sliding resistance between the multiple spheres 5a pushed aside by the pin 11 and the inclined surface 5c when the pin 11 is inserted is likely to become extremely large, raising the concern that the pin 11 will be difficult to remove when removing the pin-fixed ornament 10; on the other hand, if θ is selected to be greater than 20°, the sliding resistance between the multiple spheres 5a pushed aside by the pin 11 and the inclined surface 5c is likely to become small, the clamping force of the pin 11 by the pin clamping element 5 will be weak, and the pin-fixed ornament 10 will be easily detached.
In this example, the pin clamping element 5 is a combination of a plurality of spheres 5a and an inclined surface 5c formed on the inner wall surface of the hollow portion 2b of the inner casing 2. As shown in Figures 1(a) and 1(b), when the pin 11 is inserted and when the pin 11 is removed, the inner casing 2 is moved in the pull-out direction to clamp and release the pin 11.

As shown in Fig. 1(a), a preferred embodiment of the pin clamping element 5 is provided in the hollow portion 2b of the inner housing 2 so as to be slidable therein, and includes a sphere holder 5b that keeps the plurality of spheres 5a in a non-contact state in the central portion along the center line of the outer casing 3 within the hollow portion 2b, and restricts movement in the direction of the center line of the outer casing 3 while allowing movement in at least the radial direction of the radial and circumferential directions of the outer casing 3. This embodiment is an effective embodiment in that it uses the sphere holder 5b to avoid a situation in which the plurality of spheres 5a become immobile in the hollow portion 2b of the inner housing 2.

Furthermore, in a mode in which the inner housing 2 has the pin receiving element 6, a representative mode of the sphere holder 5b is one in which it is formed in an inverted truncated cone shape that follows the shape of the inclined surface 5c of the inner housing 2 and is arranged separately from the pin receiving element 6. In this example, the sphere holder 5b is separate from the pin receiving element 6, and is arranged as an independent part in the hollow portion 2b of the inner housing 2 that is surrounded by the inclined surface 5c that is located closer to the pin insertion hole 2a than the pin receiving element 6.
In addition, in a mode in which the inner housing 2 has the pin receiving element 6, another representative mode of the sphere holder 5b is a mode having a holder main body formed in an inverted truncated cone shape that follows the shape of the inclined surface 5c of the inner housing 2, and a holder guide portion that protrudes from the holder main body toward the pin receiving element 6 and is slidably guided within the pin receiving element 6. This example is a mode in which the sphere holder 5b is guided and moved along the pin receiving element 6, and the holder guide portion is not limited to a cylindrical one that slidably fits into the pin receiving element 6, and may be composed of a plurality of guide legs.

Here, a preferred embodiment of the latter ball holder 5b is one in which a guide protrusion protruding outward is provided on a portion of the outer periphery of the holder guide portion, and the guide protrusion is slidably engaged along a guide groove extending along the center line direction of the pin receiving element 6. This embodiment is a preferred embodiment for guiding and moving the ball holder 5b along the pin receiving element 6, and allows the ball holder 5b to slide in a non-rotating state, allowing for smooth sliding of the ball holder 5b. Here, the guide protrusions may be provided at multiple locations, but may also be provided at one location. Also, the guide groove is not limited to a bottomed groove, and may also include a slit.
In this example, while a force is being applied in the direction to pull out the pin 11, the sphere 5a in the sphere holder 5b continues to press and hold the pin 11, and in order to pull out the pin 11 as it is, it is necessary to apply a force proportional to the inclination angle θ of the inclined surface 5c. At this time, the inclination angle θ of the inclined surface 5c is an important parameter that enables the sphere holder 5b to move together with the pin 11, and allows only the pin 11 to be pulled out smoothly by applying further force. In other words, in order to move the sphere holder 5b when pulling out the pin 11, it is not preferable that the inclination angle θ of the inclined surface 5c is too wide or too narrow, and as described above, the inclination angle θ based on the center line direction of the outer peripheral cover 3 is preferably 10° to 20°.

A preferred embodiment of the inner housing 2 is that when the pin 11 is not inserted, the inner housing 2 is stored in the hollow portion 3a so as not to protrude from the outer surface of the outer peripheral cover 3. In this example, the inner housing 2 does not become an external protrusion protruding from the outer peripheral cover 3.
Furthermore, another preferred embodiment of the inner housing 2 is one in which, when the pin 11 is not inserted, the inner housing 2 has a surface portion that faces the opening 3b of the hollow portion 3a of the outer peripheral cover 3 and is continuous with the outer surface portion of the outer peripheral cover 3. In this example, the surface portion of the inner housing 2 and the outer surface portion of the outer peripheral cover 3 face the opening 3b of the hollow portion 3a of the outer peripheral cover 3 and are continuous with each other without any step.

In addition, a preferred embodiment of the outer periphery cover 3 is one in which the outer periphery is covered with a decorative cover (not shown). In this embodiment, the pin fastener 1 can be used as a part of an ornament, and from another perspective, it can be seen as an effective technique for using an ornament such as a pearl as a decorative cover and changing it into an ornamental pin fastener. In this embodiment, the decorative cover may be the whole or a part of the outer periphery cover 3.
In this example, a representative embodiment of the outer peripheral cover 3 is a cylindrical cover body having a hollow portion 3a, and a decorative cover body having a recess into which the cover body is fitted and covering the outer periphery of the cover body. This example is an embodiment in which the cylindrical cover body is fitted into the decorative cover body.
Furthermore, from the viewpoint of further enhancing the decorativeness of the outer peripheral cover 3, a decorative accessory part (not shown) may be provided that is fixed to the periphery of the entrance of the decorative cover body (not shown) so as to surround the periphery of the entrance and has a through hole with a circular cross section that leads to the hollow portion 3a.
Here, when the pin-fixed decorative body 10 is a decorative body with a pin, the pin fastener 1 is used together with the pin-fixed decorative body 10 as a decorative body, and when the pin-fixed decorative body 10 is a pin-receiving decorative body, the pin fastener 1 is used as the pin-fixed decorative body 10 itself.

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings.
First embodiment
FIG. 2(a) is an explanatory perspective view showing the state of the pin fastener of embodiment 1 before the pin-fastened jewelry is attached, and (b) is a cross-sectional explanatory view thereof.
In this example, the pin-fastened ornament is exemplified by a pin-attached ornament 100. This type of pin-attached ornament 100 is used as an ornament by combining it with a pin fastener 20 that detachably attaches a fixing pin 110.
- Overall configuration of the pin fastener -
In this example, as shown in Figures 2 (a) and (b), the pin fastener 20 comprises a cylindrical outer cover 30 as an outer peripheral cover with a bottom that is open at one end, a pin receiving tube 40 as a pin receiving element that penetrates the bottom of the outer cover 30 and extends along the center line of the outer cover 30, a cylindrical inner case 50 as an inner housing that is slidably accommodated within the outer cover 30 and has a pin insertion hole 52 through which the pin 110 of the pin-attached decorative body 100 is inserted and a through hole 53 through which the pin receiving tube 40 can pass (see Figure 3 (b)), and a cylindrical inner case 50 as an inner housing that is slidably accommodated within the outer cover 30 and has a pin insertion hole 52 through which the pin 110 of the pin-attached decorative body 100 is inserted and a through hole 53 through which the pin receiving tube 40 can pass (see Figure 3 (b)). The pin-attached decorative body 100 is provided with a stopper wall 60 that protrudes from the peripheral edge of the end of the pin receiving tube 40, a coil spring 70 that is wound around the outer periphery of the pin receiving tube 40 located inside the inner case 50 between the bottom of the inner case 50 and the stopper wall 60 and serves as a biasing element that biases the inner case 50 toward the bottom of the outer cover 30, and a pin clamping mechanism 80 that is provided inside the inner case 50 on the pin insertion hole 52 side of the stopper wall 60 and serves as a pin clamping element that clamps the pin 110 of the pin-attached decorative body 100 when the pin 110 is inserted into the pin receiving tube 40 from the pin insertion hole 52.

- Description of each component -
<Outer cover>
3(a), the outer cover 30 has a cylindrical cover body 31 that is integrally molded using steel such as SUS. The cover body 31 has a hollow portion 33 with a circular cross section inside, and an opening 32 that communicates with the hollow portion 33 is formed at one end of the cover body 31, and a bottom portion 34 is formed at the other end, and an insertion hole 35 is opened in the center of the bottom portion 34, through which the pin receiving tube 40 can be inserted.
In this example, the hollow portion 33 is divided into a first hollow portion 33a having a predetermined first inner diameter near the bottom 34 of the cover body 31, and a second hollow portion 33b having a second inner diameter slightly larger than the first inner diameter.
<Pin receiving tube>
In this example, the pin receiving tube 40 is made of a cylindrical tube 41 integrally molded from a steel material such as SUS, having an inner diameter larger than the outer diameter of the pin 110 of the pin-attached decorative body 100, and the cylindrical tube 41 is inserted through the insertion hole 35 formed in the bottom 34 of the cover body 31, and the tip of the cylindrical tube 41 is arranged near the boundary between the first cavity 33a and the second cavity 33b of the cover body 31. Note that in this example, the cavity inside the cylindrical tube 41 functions as an insertion port for the pin 110 secured in the bottom 34 of the cavity 33 of the outer cover 30.
<Stopper wall>
Furthermore, the stopper wall 60 is configured by a flange portion formed at the tip of the cylindrical tube 41 of the pin receiving tube 40 , and in this example, is disposed facing the second cavity portion 33 b side of the cover body 31 .

<Inner case>
In this example, the inner case 50 is integrally molded using steel such as SUS, and as shown in Fig. 3(b), it is made of a cylindrical hollow cylinder 51 that is slidably accommodated along the center line of the cavity 33 of the outer cover 30. The hollow cylinder 51 in this example has a storage chamber 54 as a hollow portion inside, and a pin insertion hole 52 is formed in one end side wall portion into which the pin 110 of the pin-attached decorative body 100 is inserted, and a through hole 53 is formed in the other end side wall portion into which the pin receiving tube 40 is slidably inserted.
In particular, in this example, since it is necessary to incorporate components such as the coil spring 70 and the pin clamping mechanism 80 into the hollow cylinder 51, which is the inner case 50, a method is adopted in which, for example, one end side wall portion of the hollow cylinder 51, where the through hole 53 is opened, is constructed with a removable cover member 51b.
In this example, the accommodating chamber 54 is divided into a first accommodating chamber 54a having a space with an inner diameter large enough to accommodate the pin receiving tube 40 and the stopper wall 60 without contacting each other, and a second accommodating chamber 54b having a space with an inner diameter slightly larger than that of the first accommodating chamber 54a and whose inner diameter gradually decreases toward the pin insertion hole 52.
In addition, two stepped portions 55 (55a and 55b in this example) are provided on the outer periphery of the hollow cylinder 51, which is the inner case 50, so that the outer diameter of the outer periphery of the hollow cylinder 51 gradually decreases in stages from the pin insertion hole 52 side to the through hole 53 side. In this example, the hollow cylinder 51 is configured such that, at the boundary of the second stepped portion 55b, the small diameter portion is accommodated in the first cavity 33a of the outer cover 30 and the large diameter portion is accommodated in the second cavity 33b of the outer cover 30.

<Coil spring>
In this example, as shown in Figures 2 (b) and 3 (c), the coil spring 70 is wound around the pin receiving tube 40 with both ends hooked between one end side wall portion, in which the through hole 53 is opened, of the hollow cylinder 51 which is the inner case 50, and a stopper wall 60 provided at the tip of the pin receiving tube 40.

<Pin clamping mechanism>
In this example, the pin clamping mechanism 80, as shown in Figures 4 (a) and 3 (d), accommodates multiple (three in this example) spheres 81 in the second storage chamber 54b of the hollow cylinder 51, which is the inner case 50, and by utilizing the structure of the second storage chamber 54b, clamps the pin 110 of the pin-attached decorative body 100 inserted into the pin insertion hole 52 of the inner case 50 at a predetermined position.
In this example, as shown in Figures 4(b) to (d), the second storage chamber 54b has a configuration in which the inner diameter decreases as it moves away from the first storage chamber 54a, and a Rulo triangular cross-sectional shape is selected for it, and a roughly U-shaped guide groove 54m that can stably accommodate multiple spheres 81 is formed near the apex of the Rulo triangle. Furthermore, an inclined surface 82 is formed on the peripheral wall surrounding the second accommodating chamber 54b (all peripheral walls including the guide groove 54m), which inclines in a direction narrowing in diameter toward the pin insertion hole 52. Within the second accommodating chamber 54b, when the pin 110 inserted through the pin insertion hole 52 enters the passage portion surrounded by a plurality of spheres 81, the plurality of spheres 81 are pushed outward as the pin 110 enters and move slidably along the inclined surface 82 of the guide groove 54m, so that at a predetermined position, the pin 110 is clamped under pressure between the three spheres 81.
Incidentally, the inclination angle θ of the inclined surface 82 relative to the center line direction of the hollow cylinder 51 may be appropriately selected, but is appropriately selected in the range of 10° to 20° taking into account the sliding resistance between the sphere 81 and the inclined surface 82.

-Method of manufacturing pin fastener-
As shown in FIGS. 3(a) to 3(d), the pin fastener 20 can be manufactured using the respective components of the pin fastener 20 in the following steps.
First, the lid member 51b with the through hole 53 of the hollow cylinder 51 serving as the inner case 50 is temporarily removed, and a plurality of spheres 81 are accommodated in the second accommodation chamber 54b of the hollow cylinder 51, after which one end of the coil spring 70 is placed on the stopper wall 60 attached to the pin receiving cylinder 40, and the pin receiving cylinder 40 and the coil spring 70 are accommodated in the first accommodation chamber 54a and the second accommodation chamber 54b of the hollow cylinder 51 through the opening created by removing the lid member 51b of the hollow cylinder 51, and the opening of the hollow cylinder 51 is then closed with the lid member 51b. At this time, the pin receiving cylinder 40 is inserted into the through hole 53 of the lid member 51b, and the other end of the coil spring 70 is pushed in by the lid member 51b. Next, the inner case 50 in which each part is assembled is inserted into the hollow portion 33 from the opening 32 side of the outer cover 30, and the pin receiving tube 40 protruding from the inner case 50 is inserted into the insertion hole 35 opened in the bottom portion 34 of the outer cover 30 and disposed protruding outside the outer cover 30. In this state, the pin receiving tube 40 is fixed to the edge of the insertion hole 35 so that the protruding dimension of the pin receiving tube 40 becomes a predetermined value, and the inner case 50 is housed in the hollow portion 33 of the outer cover 30.

-How to use the pin fastener-
<How to attach pin-attached accessories>
When attaching the pin-attached jewelry body 100 to the pin fastener 20, the pin 110 of the pin-attached jewelry body 100 is inserted into the pin insertion hole 52 of the pin fastener 20, as shown in Figures 2 (b) and 5 (a).
At this time, the pin 110 is inserted into the inner case 50 through the pin insertion hole 52 and proceeds through the passage surrounded by the multiple spheres 81 built into the inner case 50. Then, the multiple spheres 81 are pushed outward as the pin 110 is pushed in, and slide in the insertion direction of the pin 110 along the inclined surface 82 surrounding the periphery of the second storage chamber 54b, as shown in Figures 4(a) and 5(b). In this state, the multiple spheres 81 are pressed outward against the inclined surface 82, so that the inner case 50 is in a state of slightly protruding in the direction of being drawn out from the hollow portion 33 of the outer cover 30. Then, the pin 110 passes through the passage surrounded by the multiple spheres 81 and is received by the pin receiving tube 40, and at the point when the multiple spheres 81 are pressed against a predetermined position on the inclined surface 82, the pin 110 is clamped in a pressurized state. As a result, the pin 110 of the pin-attached decorative body 100 is held in a restrained state within the pin fastener 20.
Furthermore, in this example, even if the thickness of the pin 110 is different, the amount of outward movement of the multiple spheres 81 changes depending on the thickness of the pin 110, and accordingly, the amount of pull-out of the inner case 50 changes, and the multiple spheres 81 clamp the pin 110 under pressure.

<Removal of pin-attached ornaments>
Conversely, when removing the pin-attached decorative body 100 from the pin fastener 20, the pin 110 of the pin-attached decorative body 100 may be pulled out in the direction of the arrow, as shown in Fig. 2(b) and Fig. 5(c). At this time, since the multiple spheres 81 of the pin clamping mechanism 80 pressurize and clamp the pin 110, even if the pin 110 is pulled out in the pull-out direction, the multiple spheres 81 slide in the direction of decreasing diameter along the inclined surface 82 as the pin 110 moves in the pull-out direction, and the pressure clamping force of the pin 110 by the multiple spheres 81 is further increased. Therefore, as shown in Fig. 5(d), if the force in the pull-out direction of the pin 110 is further increased, the pin 110 is held in a restrained state by the multiple spheres 81, and the inner case 50 is pulled out by the pin 110 against the biasing force of the coil spring 70, and a part of the inner case 50 is arranged to protrude from the hollow portion 33 of the outer cover 30. In this state, the pressure and clamping force of the plurality of spheres 81 on the pin 110 is still strong, so even if one tries to pull out the pin 110 in this state, it will be difficult to pull it out.
Therefore, in this example, as shown in Fig. 5(e), when the pin 110 is rotated and then pushed in once as shown in Fig. 6(a), the sliding resistance between the pin 110 and the plurality of spheres 81 decreases with the rotation of the pin 110, and further, when the pin 110 is pushed in, the plurality of spheres 81 slide in a direction expanding in diameter along the inclined surface 82, temporarily weakening the pressing and clamping force of the pin 110 by the plurality of spheres 81. In this state, when the pin 110 is again pulled out in the direction of the arrow as shown in Fig. 6(b), the pin 110 is pulled out from the passage portion surrounded by the plurality of spheres 81 and then pulled out from the pin insertion hole 52 of the inner case 50 as shown in Fig. 6(c). Thereafter, when the pin 110 is completely pulled out from the pin fastener 20, as shown in Figure 6 (d), the rotation of the pin 110 causes the multiple spheres 81 located near the apexes of the Rouleau triangle to move in the rotational direction, and as a result, the inner case 50 rotates while twisting the coil spring 70. As a result, the constraint state of the multiple spheres 81 by the pin 110 is released as the pin 110 is pulled out, and after the inner case 50 rotates slightly due to the return action of the torsional deformation of the coil spring 70, the inner case 50 returns to its initial position inside the hollow portion 33 of the outer cover 30 due to the biasing force of the coil spring 70, as shown in Figure 6 (e).

-Ingenious features of pin-attached ornaments-
As an ingenious feature of the pin-attached ornament 100, as shown in Fig. 7(a), a constriction 111 consisting of a small diameter recess is provided in a part of the pin 110 so that the pin 110 does not easily come off from the pin fastener 20. In this case, when the pin 110 is inserted into the pin fastener 20, as shown in Fig. 7(b), a pressurized clamping force P is applied to the pin 110 from the multiple spheres 81. Even if an external force in the pull-out direction suddenly acts on the pin 110 and the pin 110 moves in the pull-out direction, as shown in Fig. 7(c), when the multiple spheres 81 engage with the constriction 111 of the pin 110, the movement of the pin 110 in the pull-out direction is effectively suppressed, and the situation in which the pin 110 easily comes off is avoided.
When using such a pin-attached jewelry item 100, the attachment and detachment of the pin-attached jewelry item 100 to the pin fastener 20 can be performed as shown in Figures 5 and 6, and the ease of attachment and detachment of the pin-attached jewelry item 100 is maintained good compared to when a pin-attached jewelry item without a waist 111 is used.

In this example, the inner case 50 behaves as if it is being pulled out slightly from the outer cover 30 by inserting the pin 110 into the pin insertion hole 52, but the amount of pulling out of the inner case 50 is assumed to be approximately proportional to the size of the gap in the passage portion surrounded by the multiple spheres 81.
In other words, as shown in Figures 7 (d) and (e), it is presumed that the insertion of pin 110 into inner case 50 widens the gaps between multiple spheres 81, causing multiple spheres 81 to rub against inclined surface 82, causing a pressing force Q to act vertically on inclined surface 82, and causing the inner case 50 to slide in the pulling-out direction due to the pull-out direction component Q1 of the pressing force Q.
7D, if the diameter of the inscribed circle of the gap in the passage portion of the plurality of spheres 81 is h (equivalent to 0.4 ψ (mm) for example), then this should be approximately matched to the size of the constriction 111 of the pin 110. In this example, the pin 110 is not held by the pin fastener 20 if the pin 110 has a diameter equal to or smaller than h. Furthermore, if the pin 110 has a diameter larger than h (but is less than 1.0 ψ), and the plurality of spheres 81 are fitted in the constriction 111 of the pin 110, then even if the inner case 50 is pulled out of the outer cover 30 once, it will return to its original flat or nearly flat state facing the opening 32 of the outer cover 30.
Thus, in this example, the larger the gap between the thickness of the pin 110 and the constriction 111, that is, the smaller the diameter of the constriction 111, the more difficult it is for the pin 110 to come off from the pin fastener 20. In other words, the force required to pull out the pin 110 when removing the pin-attached jewelry body 100 becomes greater. Conversely, when the constriction 111 is shallow or when a pin 110 without a constriction is used, the pin 110 becomes easier to pull out from the pin fastener 20, so adjustments such as setting the inclination angle θ of the inclined surface 82 to a smaller value are necessary.

Embodiment 2
Figure 8 (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 2 before a pin-attached jewelry item is attached, and (b) is a cross-sectional explanatory diagram showing the state when the pin-attached jewelry item is removed from the pin fastener.
- Overall configuration of the pin fastener -
In FIG. 8A, the basic configuration of the pin fastener 20 is substantially the same as in the first embodiment, and includes an outer cover 30, a pin receiving cylinder 40, an inner case 50, a stopper wall 60, a coil spring 70 and a pin clamping mechanism 80.
In this example, the stopper wall 60 and the coil spring 70 are substantially the same components as those in the first embodiment, but the outer cover 30, the pin receiving tube 40, the inner case 50 and the pin clamping mechanism 80 have configurations different from those in the first embodiment.

- Components of the pin fastener -
<Outer cover>
9(a) and 9(b), the outer cover 30 has a cylindrical cover body 31 that is integrally molded using, for example, steel such as SUS, in a manner similar to that of embodiment 1. The cover body 31 has a hollow portion 33 with a circular cross section inside, and an opening 32 that communicates with the hollow portion 33 is formed at one end of the cover body 31, and a bottom portion 34 is formed at the other end, and an insertion hole 35 is opened in the center of the bottom portion 34, through which the pin receiving cylinder 40 can be inserted.
Here, unlike the first embodiment, the cover body 31 has a flange 31a that protrudes outward from the periphery of the opening 32, and a chamfered portion 31b on the periphery of the bottom portion 34. Also, an annular engagement projection 35a is formed on the inner periphery of the insertion hole 35. Furthermore, unlike the first embodiment, the hollow portion 33 has a space that has a circular cross section and the same inner diameter.
<Pin receiving tube>
In this example, as shown in Fig. 9(c), the pin receiving cylinder 40 is made of a cylindrical tube 41, similarly to the first embodiment, but unlike the first embodiment, one end of the cylindrical tube 41 is connected to an insertion hole 35 formed in the bottom 34 of the cover body 31, and the cylindrical tube 41 is disposed in the hollow portion 33. An annular engagement groove 42 is formed on the periphery of one end of the cylindrical tube 41, which can engage with an annular engagement protrusion 35a formed on the inner periphery of the insertion hole 35. The other end of the cylindrical tube 41 is provided with a brim-shaped stopper wall 60 that protrudes outward.

<Inner case>
In this example, the inner case 50 has a hollow cylinder 51 that is substantially similar to that in the first embodiment, and the hollow cylinder 51 defines a first storage chamber 54a and a second storage chamber 54b.
Here, unlike embodiment 1, the hollow cylinder 51 in this example has a cylindrical tube 51a with the same outer diameter, as shown in Figures 10 (a) to (c), and a pin insertion hole 52 is formed in one end side wall of this cylindrical tube 51a, into which the pin 110 of the pin-attached decorative body 100 is inserted, and the wall surrounding the pin insertion hole 52 functions as a retaining wall 56 that retains the spherical holder 90 described later.
In this embodiment, the other end side wall of the cylindrical tube 51a is made of a disk-shaped cover member 51b that can be attached to and detached from the cylindrical tube 51a, and an annular engagement groove 51c is formed on the inner peripheral edge of the other end of the cylindrical tube 51a, and an annular engagement protrusion 51d is formed on the outer peripheral edge of the cover member 51b, so that the other end of the cylindrical tube 51a is closed by the cover member 51b by engaging the annular engagement protrusion 51d with the annular engagement groove 51c. A through hole 53 through which the pin receiving tube 40 is inserted is opened in the center of the cover member 51b. In addition, in order to make the cover member 51b detachable from the cylindrical tube 51a, it is preferable to make the peripheral wall of the cylindrical tube 51a elastically deformable. Here, in order to make the peripheral wall elastically deformable, it is possible to appropriately select, for example, to make a plurality of cut slits in the peripheral wall or to make the part of the cylindrical tube 51a corresponding to the cover member 51b thin-walled.

<Pin clamping mechanism>
In this example, the pin clamping mechanism 80, like embodiment 1, is provided with multiple (three in this example) spheres 81, and an inclined surface 82 on the peripheral wall surrounding the second accommodating chamber 54b that slopes in a direction of reducing in diameter toward the pin insertion hole 52, but unlike embodiment 1, is provided with a sphere holder 90 that movably holds the multiple spheres 81.
In this example, as shown in Figures 11(a) to (d), the sphere holder 90 has a holder body 91 in the shape of an inverted truncated cone that conforms to the shape of the inclined surface of the second storage chamber 54b in the hollow cylinder 51, which is the inner case 50. Here, the holder body 91 is provided separately from the pin receiving tube 40, and is connected between a disk-shaped top 91a and a disk-shaped bottom 91b with a smaller diameter than the top 91a by a body 91c. A through hole 92 through which the pin 110 of the pin-attached ornament 100 passes is formed in the center of the top 91a, the body 91c, and the bottom 91b, and a plurality of sphere holding holes 93 (three in this example) are opened in the body 91c at approximately equal angular intervals in the radial direction relative to the center line of the through hole 92.
In this example, the sphere holder 90 is slidably provided in the second accommodation chamber 54b, and keeps the plurality of spheres 81 held in the sphere holding holes 93 in a non-contact state in the center along the center line of the through hole 92, restricts the movement of the plurality of spheres 81 in the center line direction and the circumferential direction of the through hole 92, and allows the plurality of spheres 81 to move in the radial direction of the through hole 92. In this example, the sphere holder 90 adopts a mode that restricts the movement of the plurality of spheres 81 in the circumferential direction of the through hole 92, which is preferable in that the work of assembling the plurality of spheres 81 into the sphere holder 90 can be easily performed. In addition, although the sphere holder 90 restricts the movement of the plurality of spheres 81 in the circumferential direction, the sphere holder 90 can rotate around the center line direction of the through hole 92 relative to the second accommodation chamber 54b, so that the plurality of spheres 81 can move in the circumferential direction as the sphere holder 90 rotates. Furthermore, the structure of the sphere holder 90 may be such that the circumferential movement of the multiple spheres 81 is not restricted, and the sphere holder 90 may be positioned so that it does not rotate relative to the second storage chamber 54b.

-Method of manufacturing pin fastener-
As shown in FIGS. 9 to 11, the pin fastener 20 can be manufactured using the respective components of the pin fastener 20 in the following steps.
First, the lid member 51b having the through hole 53 of the hollow cylinder 51 serving as the inner case 50 is temporarily removed, and the sphere holder 90 holding the three spheres 81 is accommodated in the second accommodation chamber 54b of the hollow cylinder 51, after which one end of the coil spring 70 is placed on the stopper wall 60 attached to the pin receiving cylinder 40, and the pin receiving cylinder 40 and the coil spring 70 are accommodated in the first accommodation chamber 54a and the second accommodation chamber 54b of the hollow cylinder 51 through the opening created by removing the lid member 51b of the hollow cylinder 51, and then the opening of the cylindrical tube 51a of the hollow cylinder 51 is closed with the lid member 51b. At this time, the pin receiving cylinder 40 is inserted into the through hole 53 of the lid member 51b, and the other end of the coil spring 70 is pushed in by the lid member 51b. Next, the inner case 50 in which each part is assembled is inserted into the hollow portion 33 from the opening 32 side of the outer cover 30, and the pin receiving tube 40 protruding from the inner case 50 is connected to the insertion hole 35 opened in the bottom portion 34 of the outer cover 30. In this state, the inner case 50 may be accommodated in the hollow portion 33 of the outer cover 30.

-How to use the pin fastener-
<How to attach pin-attached accessories>
When attaching the pin-attached jewelry body 100 to the pin fastener 20, the pin 110 of the pin-attached jewelry body 100 is inserted into the pin insertion hole 52 of the pin fastener 20 as shown in FIG. 8(a).
At this time, the pin 110 is inserted into the inner case 50 through the pin insertion hole 52 and proceeds through the through hole 92 of the sphere holder 90 built into the inner case 50. Then, the multiple spheres 81 held by the sphere holder 90 are pushed outward (corresponding to the radial direction of the through hole 92) as the pin 110 is pushed in, and slide in the insertion direction of the pin 110 along the inclined surface 82 surrounding the periphery of the second storage chamber 54b. In this state, the multiple spheres 81 are pressed outward against the inclined surface 82, so that the inner case 50 is in a state of slightly protruding in the direction of being drawn out from the hollow portion 33 of the outer cover 30. Then, the pin 110 passes through the through hole 92 of the sphere holder 90 and is received by the pin receiving cylinder 40, and at the point where the multiple spheres 81 are pressed against a predetermined position on the inclined surface 82, the pin 110 is clamped in a pressurized state. This causes the pin 110 of the pin-attached jewelry item 100 to be held in a restrained state within the pin fastener 20.

<Removal of pin-attached ornaments>
Conversely, when removing the pin-attached decorative body 100 from the pin fastener 20, the pin 110 of the pin-attached decorative body 100 may be pulled out in the direction of the arrow as shown in FIG. 8(b). At this time, since the multiple spheres 81 held by the sphere holder 90 of the pin clamping mechanism 80 pressurize and clamp the pin 110, even if the pin 110 is pulled out in the pull-out direction, the multiple spheres 81 slide in the direction of decreasing diameter along the inclined surface 82 as the pin 110 moves in the pull-out direction, and the pressure clamping force of the pin 110 by the multiple spheres 81 is further increased. Therefore, if the force in the pull-out direction of the pin 110 is further increased, the pin 110 is held by the multiple spheres 81 held by the sphere holder 90 and the pin 110 is pulled out by the pin 110 against the biasing force of the coil spring 70, and a part of the inner case 50 is arranged to protrude from the hollow portion 33 of the outer cover 30 by the dimension m. In this state, the pressure and clamping force of the plurality of spheres 81 on the pin 110 is still strong, so even if one tries to pull out the pin 110 in this state, it will be difficult to pull it out.
However, when a part of the inner case 50 protrudes by m from the hollow portion 33 of the outer cover 30, the top 91a of the sphere holder 90 hits the end of the pin receiving tube 40, and the relative movement of the sphere holder 90 in the hollow portion 33 of the inner case 50 is restricted, and the movement of the plurality of spheres 81 held by the sphere holder 90 in the direction of the center line of the through hole 92 is restricted. Therefore, if the inner case 50 further protrudes from the hollow portion 33 of the outer cover 30 after the relative movement of the sphere holder 90 is restricted, the plurality of spheres 81 held by the sphere holder 90 move relatively in the direction of expanding diameter with respect to the inclined surface 82, and the pressure clamping force of the plurality of spheres 81 on the pin 110 is temporarily weakened. In this state, when the pin 110 is further pulled out, the pin 110 is pulled out from the through hole 92 of the sphere holder 90 and then pulled out from the pin insertion hole 52 of the inner case 50.
Thereafter, when the pin 110 is completely pulled out of the pin fastener 20, the inner case 50 returns to its initial position within the cavity 33 of the outer cover 30 by the biasing force of the coil spring 70.

◎Transformation form 2-1
In the second embodiment, the inner case 50 is structured to be completely contained in the hollow portion 33 of the outer cover 30, but this is not limited to this. For example, as shown in Figures 12 (a) and (b), a protrusion 57 that protrudes from the hollow portion 33 of the outer cover 30 may be formed on the outside of the blocking wall 56 of the hollow cylinder 51, which is the inner case 50, and further, a flange 57a that corresponds to the flange 31a of the cover body 31 may be formed on this protrusion 57.
Here, the protruding dimension of the protruding portion 57 from the end of the cover body 31 may be appropriately selected, but if the protruding dimension of the protruding portion 57 is too large, when the user grasps the outer cover 30, there is a possibility that the user will also grasp the protruding portion 57 of the inner case 50, which is not preferable because in this case, the action of temporarily pulling out the inner case 50 when pulling out the pin 110 is impaired. In addition, it is preferable that the flange portion 57a of the protruding portion 57 does not protrude outward beyond the flange portion 57a of the cover body 31 of the outer cover 30. In this way, it is possible to suppress the concern that the user will grasp the flange portion 57a of the protruding portion 57 of the inner case 50 when grasping the outer cover 30.

Third embodiment
Figure 13 (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 3 before a pin-attached jewelry item is attached, and (b) is a cross-sectional explanatory diagram showing the state when the pin-attached jewelry item is removed from the pin fastener.
- Overall configuration of the pin fastener -
13A, the basic configuration of the pin fastener 20 is substantially the same as that of the second embodiment, but the sphere holder 90 has a different configuration from that of the second embodiment. Note that the same components as those of the second embodiment are denoted by the same reference numerals as those of the second embodiment, and detailed description thereof will be omitted here.
In this example, the sphere holder 90, like the second embodiment, has a through hole 92 formed in the center of a holder main body 91 (comprising a top 91a, a bottom 91b, and a body portion 91c), and the body portion 91c has a plurality of sphere retaining holes 93 extending radially from the through hole 92. However, unlike the second embodiment, a cylindrical holder guide portion 94 is provided around the through hole 92 in the top 91a of the holder main body 91. This holder guide portion 94 protrudes toward the pin receiving cylinder 40, and is guided slidably within the cylindrical tube 41 of the pin receiving cylinder 40.
In this example, the holder guide portion 94 is constructed of a cylindrical member, but this is not necessarily limited to this, and multiple holder guide legs may be arranged so as to be slidably guided within the cylindrical tube 41.
According to this example, it is possible to use the pin fastener 20 in a manner similar to that of the second embodiment, but furthermore, since the holder guide portion 94 is slidably movable along the center line of the pin receiving tube 40, the sphere holder 90 moves while maintaining a stable posture in the storage chamber 54 of the inner case 50 along the center line of the inner case 50. Therefore, it is possible to apply a pressure clamping force of the multiple spheres 81 to the pin 110 of the pin-attached ornament 100 in a well-balanced manner.

Fourth embodiment
Figure 14 (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 4 before a pin-equipped jewelry is attached, and (b) is an oblique explanatory diagram showing the pin receiving tube and spherical holder, which are components of the pin fastener.
- Overall configuration of the pin fastener -
14A, the basic configuration of the pin fastener 20 is substantially the same as that of the third embodiment, but the sphere holder 90 has a different configuration from that of the third embodiment. Note that the same components as those of the third embodiment are denoted by the same reference numerals as those of the third embodiment, and detailed description thereof will be omitted here.
In this example, the sphere holder 90 has a holder main body 91, a through hole 92, a sphere retaining hole 93 and a holder guide portion 94, similar to embodiment 3, but the holder guide portion 94 and the pin receiving tube 40 have a different configuration from embodiment 3.
In this example, as shown in Figure 14 (b), the holder guide portion 94 has a pair of holder guide legs 94a arranged opposite each other around the through hole 92 of the top 91a of the holder main body 91, and a locking claw 94b bent toward the opposite direction from the opposing direction is formed at the tip of each holder guide leg 94a.
In addition, the pin receiving tube 40 has an annular engagement groove 42 formed in the peripheral wall at the tip of the cylindrical tube 41, and further has a pair of rectangular guide slits 43 cut into the cylindrical tube 41 from the end located opposite the stopper wall 60, with the bottom of each guide slit 43 functioning as a locking wall 44.
In this example, a pair of holder guide legs 94a of the holder guide portion 94 are slidably guided within the cylindrical tube 41 of the pin receiving tube 40, and the locking claws 94b slide along the guide slits 43 of the cylindrical tube 41 and are locked by the locking wall 44 to stop the movement.

According to this example, when the pin 110 of the pin-attached jewelry body 100 is attached to the pin fastener 20, it functions in a manner substantially similar to that of embodiment 3, but when the pin-attached jewelry body 100 is removed from the pin fastener 20, it functions slightly differently from embodiment 3.
In other words, when removing the pin-attached jewelry object 100 from the pin fastener 20, the pin 110 of the pin-attached jewelry object 100 can be pulled out in the direction of the arrow as shown in Fig. 15(a). At this time, the multiple spheres 81 held in the sphere holder 90 of the pin clamping mechanism 80 pressurize and clamp the pin 110, so even if you try to pull out the pin 110 in the pull-out direction, the multiple spheres 81 slide in a direction reducing their diameter along the inclined surface 82 as the pin 110 moves in the pull-out direction, and the pressure and clamping force of the multiple spheres 81 on the pin 110 increases further.
Here, when the sphere holder 90 moves in the removal direction with the pin 110 being removed, the sphere holder 90 hits the retaining wall 56, and thereafter, the inner case 50 is positioned protruding by m1 from the hollow portion 33 of the outer cover 30 until the locking claws 94b of the holder guide legs 94a of the holder guide portion 94 slide along the guide slits 43 of the pin receiving tube 40 and hit the locking wall 44. During this time, the inner case 50 is removed, but since the sphere holder 90 is also removed from within the inner case 50, the pressure and clamping force of the pin 110 by the multiple spheres 81 does not change, and it is difficult to remove the pin 110 even if one tries to do so in this state.

However, if the position of the spherical holder 90 remains stationary and the pin 110 is further pulled out in the withdrawal direction, the inner case 50 will be pulled out against the biasing force of the coil spring 70 to a position protruding further by m2 (m2 > m1) from the hollow portion 33 of the outer cover 30, as shown in Figure 15 (b).
In this state, if the inner case 50 further protrudes from the hollow portion 33 of the outer cover 30 after the relative movement of the sphere holder 90 has been restricted, the multiple spheres 81 held by the sphere holder 90 will move relatively in a direction expanding in diameter with respect to the inclined surface 82, temporarily weakening the compressive clamping force of the pin 110 by the multiple spheres 81. In this state, if the pin 110 is further pulled out, the pin 110 will be pulled out of the through hole 92 of the sphere holder 90, and then pulled out of the pin insertion hole 52 of the inner case 50.
Thereafter, when the pin 110 is completely pulled out of the pin fastener 20, the inner case 50 returns to its initial position within the cavity 33 of the outer cover 30 by the biasing force of the coil spring 70.

Fifth embodiment
Figure 16 (a) is a cross-sectional explanatory diagram showing the state of the pin fastener of embodiment 5 before a pin-attached jewelry item is attached, and (b) is a cross-sectional explanatory diagram showing the process of attaching a pin-attached jewelry item to the pin fastener.
In this example, the basic configuration of the pin fastener 20 includes the same components as those in the second embodiment, namely, an outer cover 30, a pin receiving cylinder 40, an inner case 50, a stopper wall 60, a coil spring 70, and a pin clamping mechanism 80. Note that the same components as those in the second embodiment are denoted by the same reference numerals as those in the second embodiment, and detailed description thereof will be omitted here.
In this example, as shown in Figures 16 to 19, the outer cover 30 has a cover body 31 that is substantially similar to that of embodiment 2. However, unlike embodiment 2, a pair of positioning grooves 31c, for example, are formed on the inner peripheral edge of the cover body 31 on the opening 32 side.
The pin receiving cylinder 40 is made of a cylindrical tube 41, which is inserted through an insertion hole 35 formed in the bottom 34 of the cover body 31, with the tip of the cylindrical tube 41 disposed within the hollow portion 33 of the cover body 31. In this example, the cylindrical tube 41 is fixed to the outer surface of the bottom 34 of the outer cover 30 by a fixing device 45.
Furthermore, the inner case 50 is made of a hollow cylinder 51, as in the second embodiment, and a pin insertion hole 52 is formed in one end side wall of the hollow cylinder 51, and a through hole 53 is formed in the other end side wall, so that an accommodation chamber 54 is secured within the hollow cylinder 51. In this example, the accommodation chamber 54 is divided into a first accommodation chamber 54a having a space with an inner diameter capable of accommodating the pin receiving cylinder 40 and the stopper wall 60 without contacting each other, a second accommodation chamber 54b provided adjacent to the first accommodation chamber 54a and having a space whose inner diameter gradually decreases toward the pin insertion hole 52, and an auxiliary accommodation chamber 54c having a diameter larger than the pin insertion hole 52 and smaller than the small diameter portion of the second accommodation chamber 54b.
Further, a positioning protrusion 58 that engages with a positioning groove 31 c of the cover body 31 of the outer cover 30 is formed on the peripheral wall of the hollow cylinder 51 near the pin insertion hole 52 .
The stopper wall 60, the coil spring 70 and the pin clamping mechanism 80 are substantially the same as those in the second embodiment.
Furthermore, in this example, an auxiliary coil spring 71 is accommodated in the auxiliary accommodation chamber 54 c , which urges the ball holder 90 in the same direction as the urging direction of the coil spring 70 with a force weaker than that of the coil spring 70 .

- Manufacturing method of pin fastener -
As shown in FIGS. 16 to 19, the pin fastener 20 can be manufactured using the respective components of the pin fastener 20 in the following steps.
First, the lid member 51b having the through hole 53 of the hollow cylinder 51 serving as the inner case 50 is temporarily removed, the auxiliary coil spring 71 is accommodated in the auxiliary accommodation chamber 54c of the hollow cylinder 51, and the sphere holder 90 holding the three spheres 81 is accommodated in the second accommodation chamber 54b of the hollow cylinder 51. Then, one end of the coil spring 70 is placed on the stopper wall 60 attached to the pin receiving cylinder 40, and the pin receiving cylinder 40 and the coil spring 70 are accommodated in the first accommodation chamber 54a of the hollow cylinder 51 through the opening created by removing the lid member 51b of the hollow cylinder 51. Then, the opening of the cylindrical tube 51a of the hollow cylinder 51 is closed with the lid member 51b. At this time, the pin receiving cylinder 40 is inserted into the through hole 53 of the lid member 51b, and the other end of the coil spring 70 is pushed in by the lid member 51b. Next, the inner case 50 in which each part is assembled is inserted into the hollow portion 33 from the opening 32 side of the outer cover 30, the pin receiving tube 40 protruding from the inner case 50 is inserted into the insertion hole 35 opened in the bottom portion 34 of the outer cover 30, and the pin receiving tube 40 is fixed to the outer cover 30 using the fixing device 45. In this state, the inner case 50 may be accommodated in the hollow portion 33 of the outer cover 30.

-How to use the pin fastener-
<How to attach pin-attached accessories>
When attaching the pin-attached jewelry body 100 to the pin fastener 20, the pin 110 of the pin-attached jewelry body 100 is inserted into the pin insertion hole 52 of the pin fastener 20 as shown in Figures 16 (a) and (b).
At this time, the pin 110 is inserted into the inner case 50 through the pin insertion hole 52, passes through the hollow portion of the auxiliary coil spring 71 built into the inner case 50, the through hole 92 of the sphere holder 90, and proceeds to the pin receiving tube 40. Then, when the pin 110 passes through the through hole 92 of the sphere holder 90, the multiple spheres 81 are pushed outward as the pin 110 is pushed in, and slide in the insertion direction of the pin 110 along the inclined surface 82 surrounding the periphery of the second storage chamber 54b. After this, the pin 110 is received by the pin receiving tube 40, and when the multiple spheres 81 are pressed against a predetermined position on the inclined surface 82, the pin 110 is clamped in a pressurized state. As a result, the pin 110 of the pin-attached decorative body 100 is held in a restrained state within the pin fastener 20.

<Removal of pin-attached ornaments>
Conversely, when removing the pin-attached ornamental body 100 from the pin fastener 20, the pin 110 of the pin-attached ornamental body 100 can be pulled out in the direction of the arrow as shown in Figures 20(a) to (f). At this time, since the multiple spheres 81 of the pin clamping mechanism 80 pressurize and clamp the pin 110, even if you try to pull the pin 110 in the pull-out direction, the multiple spheres 81 slide in a direction of decreasing diameter along the inclined surface 82 as the pin 110 moves in the pull-out direction, and the pressure and clamping force of the multiple spheres 81 on the pin 110 further increases, and the sphere holder 90 hits the bottom of the second storage chamber 54b.
In this state, as shown in Figure 20 (b), if the force in the direction of pulling out the pin 110 is further increased, the pin 110 is maintained in a restrained state by the multiple spheres 81, the inner case 50 is pulled out by the pin 110 against the biasing force of the coil spring 70, and a part of the inner case 50 is positioned protruding from the hollow portion 33 of the outer cover 30.
Thereafter, when a force is applied in the direction in which the pin 110 is pulled out, the sphere 81 in the sphere holder 90 bites into the material of the pin 110 and the inclined surface 82, holding the pin 110 and the sphere holder 90, but without the auxiliary coil spring 71, even if the force of pulling out the pin 110 is released, the sphere 81 is not released from its bite, and it may continue to hold the pin 110 and the sphere holder 90. Even if the pulling force is released and the pin 110 is released from its constrained state by the sphere 81 in the sphere holder 90 and can be pulled out, if the sphere holder 90 moves in the direction of the pin insertion hole 52 due to natural forces such as gravity, the pin 110, which was once released from its constrained state by the sphere 81 in the sphere holder 90, will be held by the sphere 81 in the sphere holder 90 again, and the pin 110 will not be able to be pulled out. The auxiliary coil spring 71 is added to maintain the sphere holder 90 in a position away from the pin insertion hole 52 after the pin 110 has been released from its restrained state, thereby preventing the pin 110 from being held by the sphere 81 inside the sphere holder 90 again.

Sixth embodiment
21(a) and (b) show the main part of a pin fastener according to the sixth embodiment.
In this figure, the pin fastener 20 has a different configuration from the first to fifth embodiments.
In this example, the outer cover 30 comprises a cylindrical cover body 31 with a bottom having a hollow portion 33, and a pin receiving tube 40 fixed to an insertion hole 35 formed in the bottom portion 34 of the cover body 31 via a flange portion 40f.
The inner case 50 is formed by joining two cup-shaped case parts 50a, 50b together during assembly. The first case part 50a located at the upper side in FIG. 21(a) has a roughly cylindrical shape which provides the first storage chamber 54a, and a through hole 53 through which the pin receiving tube 40 is inserted is formed at its bottom. The second case part 50b located at the lower side in FIG. 21(a) has a roughly inverted truncated cone-shaped outer shape which provides the second storage chamber 54b, and a pin insertion hole 52 is opened at its bottom.
Furthermore, in this example, the inner case 50 is completely housed inside the opening 32 of the cavity 33 of the outer cover 30 .

Furthermore, the pin clamping mechanism 80, similarly to, for example, embodiment 2, comprises a plurality of spheres 81, an inclined surface 82 formed on the inner wall surface of the second accommodating chamber 54b, and a sphere holder 90 that slidably holds the plurality of spheres 81.
However, unlike the second embodiment, the pin clamping mechanism 80 of this example has a ring tube 85 having a substantially inverted truncated cone shape disposed on the inner peripheral wall of the second case part 50b, and the inner peripheral surface of this ring tube 85 is formed as an inclined surface 82. Furthermore, the spherical holder 90 has a holder main body 91 having a substantially inverted truncated cone shape, similar to the second embodiment, but a positioning tube portion 95 that fits into the pin receiving tube 40 is provided at the top 91a of the holder main body 91, and the spherical holder 90 is fixed to the pin receiving tube 40.
Furthermore, in this example, the top 91a of the holder body 91 functions as a stopper wall 60, and a coil spring 70 is wound around the pin receiving tube 40, with one end of the coil spring 70 engaging with the bottom of the first case part 50a of the inner case 50 and the other end engaging with the stopper wall 60, so as to bias the inner case 50 in a compressed state.

According to this embodiment, when a pin-attached ornament (not shown) is attached to the pin fastener 20, as shown in Fig. 21 (a) (b), the pin 110 may be inserted into the pin insertion hole 52 of the inner case 50 of the pin fastener 20. At this time, when the pin 110 reaches the passage portion surrounded by the plurality of spheres 81 of the pin clamping mechanism 80, the plurality of spheres 81 held by the sphere holder 90 are pushed outward (corresponding to the radial direction of the through hole 92) as the pin 110 is pushed in, and slide along the inclined surface 82 toward the insertion direction of the pin 110. In this state, since the plurality of spheres 81 are pressed outward against the inclined surface 82, the inner case 50 is slightly pulled out in the direction of being pulled out from within the cavity 33 of the outer cover 30, but in this example, since the inner case 50 is stored in a position deeper than the opening 32 of the cavity 33 of the outer cover 30, it is in a state where it does not protrude outward from the opening 32 of the cavity 33 of the outer cover 30. Then, the pin 110 passes through the through hole 92 of the sphere holder 90 and is received by the pin receiving tube 40, and the pin 110 is clamped under pressure when the multiple spheres 81 are pressed to the predetermined positions on the inclined surface 82. This allows the pin 110 of the pin-attached ornament to be held in a restrained state within the pin fastener 20.
When removing the pin-attached ornament from the pin fastener 20, the pin 110 clamped by the pin clamping mechanism 80 can be pulled out while holding the outer cover 30. At this time, the inner case 50 is pulled out in the pull-out direction via the pin clamping mechanism 80 in conjunction with the pulling-out operation of the pin 110, but the sliding resistance between the multiple spheres 81 and the inclined surface 82 is reduced in conjunction with the pulling-out operation of the inner case 50, and the pin 110 is released from its restrained state by the multiple spheres 81.
In this example, the inner case 50 is stored recessed within the hollow portion 33 of the outer cover 30, as shown in Figure 21 (a), but this is not limited to this. When the pin 110 is not inserted, the surface portion of the inner case 50 may be positioned along the surface of the opening 32 of the hollow portion 33 of the outer cover 30, or the surface portion of the inner case 50 may be positioned to protrude from the hollow portion 33 of the outer cover 30.

Seventh embodiment
22(a) to (c) show the main part of a pin fastener according to the seventh embodiment.
In this figure, the pin fastener 20 is provided with an outer cover 30 which is different from those in the first to sixth embodiments.
In this example, the outer periphery of the outer cover 30 is covered with a decorative cover body 37. Here, the decorative cover body 37 is made of, for example, pearls of different sizes and colors, and may be the entire outer cover 30 or a part of it.
In this example, the outer cover 30 comprises a cylindrical cover body 31 having a hollow portion 33, and a decorative cover body 37 having a recess 37a as a concave receiving portion into which the cover body 31 is fitted and covering the outer periphery of the cover body 31.
The pin fastener 20 also includes the decorative cover body 37 described above, and a pin catch part 21 serving as a pin fastener main body that is fitted into the recess 37 a of the decorative cover body 37 .
Here, as the pin catch part 21, it is possible to use the pin fastener 20 shown in embodiment 3, for example, as shown in Fig. 23(a) . That is, in the pin catch part 21 of this example, the part used as the outer cover 30 of embodiment 3 is used as the cover body 31, a pin receiving cylinder 40 provided with a stopper wall 60 is incorporated into the cover body 31, an inner case 50 is housed in the hollow portion 33 of the cover body 31, and further, a coil spring 70 is interposed between the stopper wall 60 of the pin receiving cylinder 40 and the inner case 50 inside the inner case 50, and a pin clamping mechanism 80 is housed inside the inner case 50.
This type of pin catch part 21 is then housed and fixed in a recess 37a of a decorative cover body 37, as shown in Figures 22(b) and 22(c), to easily provide a pin fastener 20 that can also be used as a decorative body.
In this example, the recess 37a of the decorative cover body 37 need only have a recess capable of accommodating the pin catch part 21, but in cases where, for example, the pin 110 received in the pin receiving tube 40 protrudes outward from the cover main body 31, it is sufficient to provide a hole portion 37b in the recess 37a of the decorative cover body 37 for accommodating the protruding portion of the pin 110, as shown by the phantom line in Figure 23 (a).
In addition, in this example, the end portion of the pin catch part 21 on the side of the pin insertion hole 52 is configured as a flat surface, but this is not limited to this and may be an uneven surface, or a surface (e.g., a curved surface) that continues into the outer surface of the decorative cover body 37.

Moreover, in this example, the pin catch part 21 is not limited to the aspect shown in FIG. 23(a), and it is also possible to adopt, for example, an aspect other than that of the third embodiment.
FIG. 23(b) shows another specific example of the pin catch part 21, in which the pin fastener 20 shown in the fifth embodiment is used.
In the same figure, the pin catch part 21 has the part used as the outer cover 30 of embodiment 5 as the cover body 31, a pin receiving tube 40 with a stopper wall 60 provided inside the cover body 31, and an inner case 50 (having an auxiliary accommodating chamber 54c in addition to a first accommodating chamber 54a and a second accommodating chamber 54b as accommodating chambers 54) accommodated in the hollow portion 33 of the cover body 31. Furthermore, a coil spring 70 is arranged in the first accommodating chamber 54a of the inner case 50, an auxiliary coil spring 71 is arranged in the auxiliary accommodating chamber 54c, and a pin clamping mechanism 80 is arranged in the second accommodating chamber 54b.
In this example, the recess 37a of the decorative cover body 37 has a recess capable of accommodating the cover body 31 and the fixing device 45 of the pin receiving tube 40, and a through hole 37c is formed at the bottom of this recess 37a as a circular cross-sectional hole that penetrates to the surface of the decorative cover body 37 and is capable of accommodating the portion of the pin receiving tube 40 that protrudes outward from the cover body 31. In this way, in this example, the decorative cover body 37 employs a combined region of the recess 37a and the through hole 37c as a recess for accommodating the pin catch part 21.

As described above, this embodiment is an embodiment in which the pin fastener 20 can be used as a part of an ornament. From another perspective, it is an effective technique for using an ornament such as a pearl as an ornament cover body 37 and changing it into an ornamental pin fastener.
According to this example, it is possible to design not only the pin-attached jewelry 100 but also the pin fastener 20 as a jewelry item.

Eighth embodiment
Figure 24(a) shows the main parts of a pin fastener relating to embodiment 8, Figure 24(b) shows a cross-sectional view taken along line B-B in (a), Figure 25(a) shows an arrow view seen from the R direction in Figure 24(a), and Figure 25(b) shows an arrow view seen from the L direction in Figure 24(a).
This example further enhances the decorativeness of the pin fastener 20, and comprises a decorative cover body 37 made of pearl or the like having a circular cross-sectional recess 37a in a portion of it, a metallic decorative accessory part 150 which is fixed to the periphery of the entrance of the recess 37a of the decorative cover body 37 so as to surround the periphery of the entrance of the recess 37a and which has a circular cross-sectional through hole 151 leading to the recess 37a, and a pin catch part 21 which is incorporated into the recess 37a of the decorative cover body 37 and the through hole 151 of the decorative accessory part 150.
Here, the decorative accessory part 150 can be made into any surrounding shape, for example by casting, and is fixed with adhesive around the entrance of the recess 37a of the decorative cover body 37, thereby providing further decorativeness around the entrance of the recess 37a of the decorative cover body 37.

Furthermore, as shown in Figure 24 (b), in the same manner as in embodiment 7, the pin catch part 21 has the part used as the outer cover 30 in embodiment 3 as the cover body 31, a pin receiving tube 40 with a stopper wall 60 is incorporated into the cover body 31, and an inner case 50 is accommodated in the hollow portion 33 of the cover body 31. Furthermore, inside the inner case 50, a coil spring 70 is interposed between the stopper wall 60 of the pin receiving tube 40 and the inner case 50, and a pin clamping mechanism 80 is accommodated within the inner case 50.
In this example, the outer periphery of the cover body 31 of the pin catch part 21 is fixed with adhesive into the recess 37a of the decorative cover body 37 and the through hole 151 of the decorative accessory part 150, and the cover body 31 of the pin catch part 21 and the end face on the pin insertion hole 52 side of the inner case 50 are positioned so as to be approximately flush with the outer surface of the decorative accessory part 150 when the pin 110 of the pin-equipped decorative body 100 is not inserted.

Next, an example of use of the pin fastener 20 according to this embodiment will be described.
First, the case of attaching the pin-attached ornamental body 100 to the pin fastener 20 will be described. As shown in Fig. 26(a), the pin 110 of the pin-attached ornamental body 100 may be inserted into the pin insertion hole 52 of the pin catch part 21 of the pin fastener 20. At this time, as shown in Figs. 26(a) and 26(b), the pin 110 is inserted into the inner case 50 from the pin insertion hole 52 and reaches the pin clamping mechanism 80 built into the inner case 50. The pin 110 advances through the passage surrounded by a number of spheres 81, and the spheres 81 are pushed outward by the pin 110 and slide along the inclined surface 82 formed on the inner peripheral surface of the inner case 50. In this state, a pressing force is applied from the multiple spheres 81 to the inclined surface 82 in a direction perpendicular to the inclined surface 82, and a component of the pressing force in the direction in which the pin 110 is pulled out causes a part of the inner case 50 to be pulled out from the cover body 31 as shown by the arrow, and as shown in Figure 27 (a), a part of the pin catch part 21 is pulled out from the decorative accessory part 150 of the decorative cover body 37. Then, the pin 110 passes through the passage surrounded by the multiple spheres 81, and at the point when the multiple spheres 81 are pressed against a predetermined position on the inclined surface 82, the pin 110 is clamped. As a result, the pin 110 of the pin-attached decorative body 100 is held in a restrained state within the pin fastener 20.

Conversely, when removing the pin-attached decorative body 100 from the pin fastener 20, the pin 110 of the pin-attached decorative body 100 can be pulled out in the direction of the imaginary arrow, as shown in FIG. 27(b). At this time, since the pin clamping mechanism 80 clamps the pin 110, when the pin 110 is pulled out in the pulling direction, the inner case 50 is further pulled out from the cover body 31 against the biasing force of the coil spring 70 as shown in imaginary lines, and the inclined surface 82 of the inner case 50 is displaced in the pulling direction, reducing the sliding resistance between the multiple spheres 81 and the inclined surface 82. As a result, the clamping force of the multiple spheres 81 on the pin 110 weakens, and the pin 110 is pulled out of the pin clamping mechanism 80. Thereafter, when the pin 110 is completely pulled out of the pin fastener 20, the inner case 50 of the pin catch part 21 returns into the cavity 33 of the cover body 31 by the biasing force of the coil spring 70, returning to the initial position shown in FIG. 26(a).

In this way, in the pin fastener 20 of this example, the pin 110 is stably held by the pin catch part 21, so that the accident of the earring falling off when the pin-attached jewelry item 100 is worn as an earring, for example, is effectively prevented.
Furthermore, since the pin catch part 21 is housed not only in the recess 37a of the decorative cover body 37 but also by utilizing the through hole 151 of the decorative accessory part 150, the depth dimension of the recess 37a of the decorative cover body 37 can be made shallow, and accordingly, a small-sized pearl can be used as the decorative cover body 37. Therefore, even when a small-sized pearl is used as the decorative cover body 37, the pin catch part 21 is not unnecessarily exposed to the outside, and the decorativeness of the decorative cover body 37 is further enhanced by the decorative accessory part 150, so that the appearance quality of the pin fastener 20 is maintained at a good level.

Embodiment 9
FIG. 28(a) shows a main part of a pin fastener according to a ninth embodiment.
This example is a pin fastener 20 for pinning a pin receiving ornament 120 of a pin-fastened ornament with a pin part 130.
In the figure, the pin receiver ornament 120 is a piece of jewelry such as a pearl, a badge, or a brooch, and has at least a partially open cavity 121 for housing the pin fastener 20, and is adapted to house and hold the pin fastener 20 in the cavity 121. The pin receiver ornament 120 is adapted to insert the pin 131 of the pin part 130 (used as a fixed part) into the pin insertion hole 52 of the built-in pin fastener 20 to fix and hold it on the part to be attached. The pin 131 in this example may have a curved tip or may be sharp and needle-like. The pin 131 may also have a constriction (corresponding to a small diameter recess) 132 in the middle to make it difficult to come off.
Thus, in this example, the pin receiving ornament 120 constitutes an ornament by means of the built-in pin fastener 20 and pin part 130 .

In this example, the pin fastener 20 may be any of those shown in embodiments 1 to 6, and here, as shown in FIG. 28(b), the pin fastener 20 according to embodiment 3 (outer cover 30, pin receiving tube 40, inner case 50, stopper wall 60, coil spring 70, pin clamping mechanism 80) is used. In FIG. 28(b), the hollow portion 121 of the pin receiving decorative body 120 has a bottomed recess shape that can accommodate the outer cover 30 of the pin fastener 20, but this is not limited to this. When adopting a mode in which the pin 131 protrudes outward from the outer cover 30 or a mode in which the pin receiving tube 40 protrudes outward from the outer cover 30, it is sufficient to secure a hole portion (not shown) at the bottom of the recess to accommodate the protruding portion of the pin 131 or the pin receiving tube 40.

In addition, while Figure 28(b) shows an embodiment in which the pin part 130 is used as a fixed part, this is not limited to this. For example, as shown in Figure 28(c), in the case of making the jewelry replaceable as a ring, a hollow portion 121 is provided in the pin receiving ornament 120 as jewelry such as a pearl, and the pin fastener 20 is built into the hollow portion 121, while the pin part 140 is provided with a fixing pin 142 (in this example, with a narrowed portion 143 consisting of a small diameter recess) integrally formed in the ring 141 of the ring, and the pin 142 is detachably attached to the pin fastener 20, thereby providing a ring with replaceable jewelry.

The present invention provides a pin fastener that is easy to attach and detach from the pin of a pin-fixed decorative body by storing a functional element for attachment and detachment in a hollow portion of an inner casing, covering the inner casing with an outer peripheral cover, and allowing the inner casing to be partially pulled out from the outer peripheral cover when inserting and removing the pin, thereby facilitating the pin clamping element to clamp and release the pin, thereby providing a pin fastener that can be easily attached and detached from the pin.
In addition, if a decorative cover body is used as the outer periphery cover, it is possible to easily construct a pin fastener that also serves as a decorative body. It is also possible to incorporate the pin fastener into the pin receiver decorative body of the pin fastening decorative body.

1...Pin fastener, 2...Inner housing, 2a...Pin insertion hole, 2b...Hollow portion, 3...Outer casing, 3a...Cavity, 3b...Opening, 3c...Insertion hole, 4...Pressing element, 5...Pin clamping element, 5a...Sphere, 5b...Sphere holder, 5c...Inclined surface, 6...Pin receiving element, 10...Pin fastening decoration, 11...Pin

Claims (12)

A pin fastener to which a pin of a pin-fastened ornament is detachably attached,
an inner housing having a pin insertion hole on a side into which the pin is inserted and a hollow portion communicating with the pin insertion hole;
a hollow portion having a bottom that opens to a side where the pin is inserted, the inner housing is housed in the hollow portion in a slidable manner in contact with a bottom of the hollow portion, and an outer circumferential cover that covers an outer circumferential portion of the inner housing;
a biasing element that biases the inner housing against a bottom of the hollow portion of the outer circumferential cover in a direction in which the pin is inserted;
a pin clamping element that is provided in the hollow portion of the inner housing, clamping the pin while moving the inner housing in a drawing direction relative to the outer circumferential cover when inserting the pin into the pin insertion hole, and releasing the clamped state of the pin while moving the inner housing in the drawing direction relative to the outer circumferential cover when removing the pin from the clamped state;
A pin fastener comprising: The pin fastener according to claim 1,
The pin fastener, characterized in that the inner housing has a pin receiving element provided on the opposite side of the hollow portion from the pin insertion hole, and receives the inserted pin. The pin fastener according to claim 1 or 2,
A pin fastener characterized in that the outer peripheral cover has an insertion hole for the pin at the bottom of the hollow portion. The pin fastener according to any one of claims 1 to 3,
The pin clamping element has an inclined surface that forms the inner wall surface of the hollow portion of the inner housing so that its diameter narrows toward the pin insertion hole, and a plurality of spheres that are slidably accommodated along the inclined surface, and is a pin fastener characterized in that the pin is clamped by the plurality of spheres that slide along the inclined surface when the pin is inserted into the pin insertion hole. The pin fastener according to claim 4,
The pin clamping element is slidably arranged within the hollow portion of the inner housing, and is characterized in that it has a sphere holder that keeps the multiple spheres non-contact in the central portion along the center line of the outer peripheral cover within the hollow portion, and restricts movement of the outer peripheral cover in the direction of the center line while allowing movement at least in the radial direction of the radial and circumferential directions of the outer peripheral cover. The pin fastener according to claim 1 or 2,
A pin fastener characterized in that the inner housing is housed within the hollow portion so that the pin does not protrude from the outer surface of the outer peripheral cover when the pin is not inserted. The pin fastener according to claim 6,
A pin fastener characterized in that the inner housing has a surface portion that faces an opening of the hollow portion of the outer peripheral cover and is continuous with an outer surface portion of the outer peripheral cover when the pin is not inserted. 2. The pin fastener according to claim 1,
A pin fastener characterized in that the outer periphery of the outer periphery cover is covered with a decorative cover body. 9. The pin fastener according to claim 8,
The pin fastener is characterized in that the outer peripheral cover comprises a cover body having the hollow portion, and a decorative cover body having a concave receiving portion into which the cover body is fitted and covering the outer periphery of the cover body. 9. The pin fastener according to claim 8,
The pin fastener is characterized in that the outer peripheral cover is fixed to the entrance periphery of the decorative cover body so as to surround the entrance periphery, and is provided with a decorative accessory part having a circular cross-sectional through hole leading to the hollow portion. A pin-on ornament;
The pin fastener according to any one of claims 1 to 10, wherein the pin of the pin fastening ornament is detachably attached, and the pin fastening ornament is fastened to the attachment part with the pin inserted into the pin hole of the attachment part;
An ornament comprising: A pin receiving ornament as a pin-fastening ornament;
The pin fastener according to any one of claims 1 to 10, which is incorporated in a hollow portion provided so as to open at least a portion of the pin receiving decorative body;
A pin part that is detachably inserted into the pin fastener;
An ornament comprising:

Images