JP2018171293A - Pierced earring catch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piercing catch that can increase the product life and can be formed smaller than before. SOLUTION: A post holding member 9 inserted and fixed in a sub-decorative body 2 extends from a tubular part 10 through which a pierced post P securing a main decorative body 1 penetrates toward the tip. A plurality of flexible portions 11 that are spaced apart in the circumferential direction of the cylindrical portion 10, protrusions 14 that protrude inside the flexible portions 11, and an elastic ring that is fitted on the outer periphery of the flexible portion 11 And a member 17. An inner diameter of a circle formed by a combination of the protrusions 14 provided on the plurality of flexible portions 11 is made smaller than an outer diameter of the pierce post P, and the elastic ring member 17 includes the flexible portion 11. On the other hand, the elastic contraction force in the direction of tightening the flexible portions 11 is exhibited. [Selection] Figure 1

Description

  The present invention relates to a piercing catch that detachably holds a piercing post.

Recently, in addition to the main decorative body 1 fixed to the pierce post P, a sub-decorative body 2 such as a pearl is also provided on the piercing catch C side, and a gorgeous and voluminous piercing is required as a whole.
FIG. 7 shows a conventional piercing P and piercing catch C.
The conventional piercing catch C is obtained by incorporating the post holding member 3 into the sub-decorative body 2 made of pearl or the like. The configuration of the post holding member 3 is as follows.

The post holding member 3 is provided with a cylindrical portion 4 through which the piercing post P penetrates on the base side, and extends from the cylindrical portion 4 to the distal end side, and a plurality of elastic pieces spaced from each other in the circumferential direction of the cylindrical portion 4 5 is provided.
Protrusions 6 are provided on the inner ends of the elastic pieces 5, and the inner diameter formed by these protrusions 6 is slightly smaller than the outer diameter of the pierce post P.
Therefore, when the pierce post P is inserted inside the plurality of protrusions 6, the elastic piece 5 exhibits an elastic force while curving by the height of the protrusion 6, and the protrusion 6 is formed on the pierce post P. When it corresponds to the recessed portion 7, the elastic piece 5 fits the protrusion 6 into the recessed portion 7 by its elastic force so that the pierce post P does not come out of the pierce catch C.

  Of the elastic force of the elastic piece 5, the elastic force acting on the protrusion 6 becomes the holding force for the pierce post P. However, as the length of the elastic piece 5 becomes longer, the reaction force at the time of warping is dispersed throughout the elastic piece 5, and the elastic force that directly acts on the protrusion 6 becomes weaker.

Utility Model Registration No. 3128019

In the conventional piercing catch C, an alternating load acts on the elastic piece 5 each time the piercing post P is inserted into or removed from the post holding member 3. When an alternating load acts in this way, the elastic piece 5 becomes open easily in a short time, and the elastic force acting on the protrusion 6 is further weakened.
As described above, if the elastic force acting on the protrusion 6 is weakened, the holding force of the post holding member 3 with respect to the pierce post P is also weakened. Or drop off.

In such a case, it is also conceivable to remove the post holding member 3 from the auxiliary decorative body 2 and replace only the post holding member 3. However, in the case where the secondary decorative body 2 is an expensive pearl or the like, the secondary decorative body 2 and the cylinder portion 4 of the post holding member 3 are considerably strengthened so that the secondary decorative body 2 does not fall out of the post holding member 3 and be lost. It is usual to combine. When firmly fixed in this way, it was almost impossible to replace only the post holding member 3 without damaging the auxiliary decorative body 2.
Therefore, there is a problem that the post holding member 3 determines the product life regardless of the value of the auxiliary decorative body 2.

  On the other hand, in order to keep the elastic force of the elastic piece 5 strong, it is also conceivable to increase the thickness of each elastic piece 5. However, if the thickness of the elastic piece 5 is increased, the size of the sub-decorative body 2 must be increased more than necessary. In particular, when the sub-decorative body 2 is composed of expensive pearls or the like, it leads to a significant cost increase.

  An object of the present invention is to provide a piercing catch capable of extending the product life.

  According to the first aspect of the present invention, a post holding member that is inserted into and fixed to the sub-decorative body has a cylindrical portion through which a pierce post that fixes the main decorative body passes, and extends from the cylindrical portion toward the tip, and a circular portion of the cylindrical portion. A plurality of flexible portions that are spaced apart in the circumferential direction, a protrusion that protrudes inside each flexible portion, and an elastic ring member that is fitted to the outer periphery of the flexible portion. And the internal diameter of the circle | round | yen comprised by the protrusion part provided in the said some flexible part is made smaller than the outer diameter of the said pierce post. Further, the elastic ring member is characterized in that it exerts an elastic contraction force in the direction of tightening the flexible portions with respect to the flexible portions.

The elastic ring member may be any of an O-ring, a coil spring, a C-ring, etc., or a cylindrical member.
In short, any material or shape may be used for each flexible part as long as it exhibits an elastic force in the tightening direction from its outer periphery.

The second invention is characterized in that the elastic ring member is fitted at a position substantially corresponding to the protrusion of the flexible portion.
The third invention is characterized in that a plurality of the protrusions are provided in the longitudinal direction of the flexible part.

According to the first invention, when a force in the direction of opening the flexible portion acts on the flexible portion, the elastic contraction force of the elastic ring member acts on the flexible portion as a reaction force. Unlike the elastic piece, there is almost no deterioration in the function of exerting elastic force. Further, even if the elastic force is somewhat deteriorated, it hardly affects the holding force of the post holding member.
Therefore, even if the flexible portion is slightly deformed, the holding force for holding the pierce post is hardly affected. Thus, even if the flexible portion is slightly opened and plastically deformed, the function of the piercing catch is not impaired, and the product life can be kept long.
Thus, since the product life of the piercing catch can be kept long, for example, even if an expensive pearl or the like is used as a sub-decorative body, the pearl or the like is not wasted.

  Further, it is not necessary to increase the thickness of each elastic piece in order to keep the elastic force of the conventional elastic piece strong. Accordingly, the flexible portion may be formed thin, so that it is not necessary to increase the size of the auxiliary decoration body more than necessary. Thus, since it is not influenced by the magnitude | size of a subdecoration body, while being able to hold down cost, the width | variety of a design can be expanded.

  According to the second aspect, since the elastic ring member is provided at a position corresponding to the protrusion of the flexible portion, the elastic force of the elastic ring member directly acts on the protrusion of the post holding member. Therefore, even if the elastic force of the elastic ring member is somewhat deteriorated, it hardly affects the holding force of the pierce post.

  According to the third invention, since the holding position of the pierce post can be changed in stages by providing a plurality of protrusions on the flexible part, the pinch width of the ear is set according to individual differences in the thickness of the ear. Can be changed.

It is sectional drawing which showed the piercing catch in which the post holding member was inserted with the side view of the piercing post before insertion in this 1st Embodiment. In this 1st Embodiment, it is sectional drawing which showed the post holding member in which the pierce post was inserted. It is sectional drawing which showed the piercing catch in this 2nd Embodiment. It is sectional drawing which showed the piercing catch in this 3rd Embodiment. In this 4th Embodiment, it is sectional drawing which showed the post holding member in which the pierce post was inserted. In this 5th Embodiment, it is sectional drawing which showed the post holding member in which the piercing post was inserted. It is sectional drawing which showed the piercing catch in which the conventional piercing post was inserted.

1 and 2 show a first embodiment of a piercing catch C according to the present invention.
As shown in FIG. 1, the piercing according to the first embodiment includes a main decoration body 1, a piercing post P fixed to the main decoration body 1, and a piercing catch C that holds the tip of the piercing post P. Become.
In addition, the main decoration body 1 which consists of decorations, such as a pearl, is provided in the piercing post P side.

The piercing catch C has the post holding member 9 fixed to the sub-decorative body 2, and its specific configuration is as follows.
A built-in hole 8 is formed in the auxiliary decorative body 2, and a post holding member 9 for holding the pierce post P is built in the built-in hole 8. A dimensional relationship in which a gap is formed is maintained between the inner periphery of the built-in hole 8 and the outer periphery of the post holding member 9.

  In addition, the post holding member 9 is provided with a cylindrical portion 10 through which the pierce post P penetrates at the base side, and extends from the cylindrical portion 10 to the distal end side, and a plurality of intervals are maintained in the circumferential direction of the cylindrical portion 10. A flexible portion 11 is provided.

An adhesive 13 is filled between the tube portion 10 and the assembly hole 8, and the auxiliary decorative body 2 and the post holding member 9 are firmly fixed via the adhesive 13. A flange 12 larger than the mounting hole 8 is provided at the base of the portion 10. The flange 12 restricts the insertion of the post holding member 9 so that an appropriate mounting depth can be maintained when the post holding member 9 is inserted into the mounting hole 8, and prevents the adhesive 13 from leaking to the outside. ing.

On the other hand, as shown in FIG. 2, the plurality of flexible portions 11 extending from the cylindrical portion 10 to the distal end side are provided with protruding portions 14 protruding inward. The inner diameter of the circle formed by the inner ends of these protrusions 14 is slightly smaller than the outer diameter of the pierce post P.
Therefore, when the pierce post P is inserted, the tip of the pierce post P comes into contact with the protrusion 14 of the flexible part 11, and the plurality of flexible parts 11 are bent outward by the height of the protrusion 14. .

Further, in the first embodiment, the groove portion 16 is formed by denting the outside of each flexible portion 11, but the groove portion 16 and the protrusion 14 are made to correspond to each other on the back and front of the flexible portion 11. ing.
The groove 16 is fitted with an elastic ring member 17 made of an O-ring. The elastic ring member 17 fitted in the groove 16 in this way exhibits an elastic clamping force with respect to the protrusion 14.

Therefore, when the pierce post P is inserted and the plurality of flexible portions 11 warp outward, the elastic tightening force of the elastic ring member 17 acts against this spread.
And when the said protrusion 14 respond | corresponds to the recessed part 7 formed in the pierce post P, the flexible part 11 inserts the protrusion 14 in the recessed part 7 with the elastic clamping force of the elastic ring member 17, and the pierce post P Prevents piercing catch C from coming off. Further, the user can feel a click when the protrusion 14 is fitted in the recess 7.

Note that a stopper portion 15 is provided at the tip of the plurality of flexible portions 11 so as to protrude toward the central axis of the cylinder.
When the pierce post P is inserted into the post holding member 9, the stopper portion 15 comes into contact with the tip of the pierce post P.

Next, a method for manufacturing the post holding member 9 will be described.
For example, when a metal is used as the material of the post holding member 9, a pipe having an inner diameter into which the pierce post P can be inserted is formed from a metal plate member.
A flange 12 formed by opening them outward is formed at one end of the pipe, and the curvature of the flange 12 is the same as the curvature of the outer periphery of the auxiliary decorative body 2.

The flange 12 is integrally formed by pressing the tip of the pipe with a roller riveter or the like. When the pipes and the flange 12 are integrally formed by pressing in this manner, the connecting portion between the pipe and the flange 12 is formed in a round shape, and thus functions as a guide when the pierce post P is inserted into the post holding member 9.
Moreover, since the diameter of the flange 12 is formed larger than the opening diameter of the built-in hole 8, the adhesion area with the auxiliary decoration body 2 can be increased. Furthermore, since this flange 12 covers the edge of the opening of the built-in hole 8, it can be finished beautifully as an ornament.

On the other hand, the other end portion side of the pipe presses its tip to form a stopper portion 15 and roll caulking the outer periphery of the pipe to form a groove portion 16.
When roll caulking is performed to form the groove 16 in this manner, the protrusion 14 is automatically formed on the corresponding back side.

  And it is a pipe as mentioned above, Comprising: While making the predetermined length part from the flange 12 into the cylinder part 10, toward the front-end | tip from this cylinder part 10, a predetermined space | interval is carried out in the circumferential direction of the cylinder part 10. Thus, a plurality of slits are formed, and a portion sandwiched between the slits is a flexible portion 11.

According to the first embodiment, when a force in the direction of opening the flexible portion 11 acts on the flexible portion 11, the elastic contraction force of the elastic ring member 17 acts on the flexible portion 11 as a reaction force. Unlike the leaf spring-like elastic piece, there is almost no deterioration in the function of exerting elastic force. Further, even if the elastic force is somewhat deteriorated, the holding force of the post holding member 9 is hardly affected.
Therefore, even if the flexible portion 11 is slightly opened and plastically deformed, the function as the piercing catch C is not impaired, and the product life can be kept long.
Since the product life can be kept long in this way, for example, even if an expensive pearl or the like is used as the secondary decorative body 2, the pearl or the like is not wasted.

  Further, since it is not necessary to give the flexible portion 11 an elastic force, it is not necessary to increase the thickness of the plate member for creating the post holding member 9. Since the flexible portion 11 may be formed thin, it is not necessary to increase the size of the sub-decorative body 2 more than necessary. Thus, since it is not necessary to use the big sub-decoration body 2, while being able to hold down cost, the width of a design can be expanded.

  Further, since the elastic ring member 17 is provided at a position corresponding to the protrusion 14 of the flexible portion 11, the elastic force of the elastic ring member 17 directly acts on the protrusion 14 of the post holding member 9. Therefore, the holding force of the post holding member 9 can be kept strong.

  In the first embodiment, pearls are used as the auxiliary decorative body 2, but pearls are not necessarily used. For example, a glass sphere or a metal sphere may be used. Further, the auxiliary decoration 2 need not be spherical. As long as the post-holding member 9 can be incorporated therein, the sub-decoration body 2 may have any material or form.

  Moreover, in this 1st Embodiment, although this cylinder part 10 and the assembly hole 8 are being fixed with the adhesive agent 13, if the cylinder part 10 and the assembly hole 8 can be fixed firmly, what kind of fixing method will be used? But it doesn't matter. For example, the cylinder portion 10 and the auxiliary decoration body 2 may be mechanically stopped with screws or the like.

Next, a second embodiment will be described.
In the second embodiment shown in FIG. 3, the elastic ring member 18 is formed into a bag shape by closing one end of a cylinder, and the other structure is the same as that of the first embodiment.

In the second embodiment, since the elastic ring member 18 is formed in a bag shape that covers the outer peripheral surfaces of the plurality of flexible portions 11 without any gaps, the elastic ring member 18 comes off the groove portion 16 as compared with the O-ring member. There is almost nothing. For example, when the post holding member 9 is inserted into the assembly hole 8, the elastic ring member 18 is formed in a bag shape, so that the elastic ring member 18 does not come off due to being caught on the inner wall of the assembly hole 8.
In the second embodiment, the elastic ring member 18 is formed in a bag shape. However, both ends may be opened and used as a cylinder.

Next, a third embodiment will be described.
The third embodiment shown in FIG. 4 uses a C-ring as the elastic ring member 19, and the other structure is the same as that of the first embodiment.

Next, a fourth embodiment will be described.
The fourth embodiment shown in FIG. 5 is provided with a plurality of protrusions 21 and 22 provided on the inner side of the flexible portion 20, and the other structure is the same as that of the second embodiment.

In the fourth embodiment, the plurality of flexible portions 20 are provided with two protrusions 21 and 22 protruding inward in the axial direction of the flexible portion 20. The proximal end side of the flexible portion 20 is a first protrusion 21 and the distal end side of the flexible portion 20 is a second protrusion 22.
In addition, a first recess 23 and a second recess 24 are formed on the piercing post P from the tip side of the piercing post P corresponding to the protrusions 21 and 22.

Therefore, when the piercing post P is inserted, the tip of the piercing post P first gets over the first protrusion 21. And when the 1st protrusion 21 respond | corresponds to the 1st recessed part 23, the flexible part 20 inserts the 1st protrusion 21 in the 1st recessed part 23 with the elastic clamping force of the elastic ring member 18. FIG.
Furthermore, when the pierce post P is inserted deeply, the tip of the pierce post P gets over the second protrusion 22. The second protrusion 22 corresponds to the first recess 23, the first protrusion 21 corresponds to the second recess 24, and the flexible portion 20 is elastically tightened by the elastic ring member 18. The first protrusion 21 is inserted into the second recess 24 and the second protrusion 22 is inserted into the first recess 23.

By providing the plurality of protrusions 21 and 22 on the flexible portion 20 in this way, the holding position of the pierce post P can be changed in stages, so that the pinch width of the ear can be set according to individual differences in the thickness of the ear. Can be changed.
Further, since the elastic tightening force of the elastic ring member 18 can be exerted at a plurality of positions, the holding force to the pierce post P is increased rather than exerting the elastic tightening force at one place. Pierce post P is difficult to come off.
In the fourth embodiment, the elastic ring member 18 is formed in a bag shape, but it may be used as a cylinder having both ends opened, or one or a plurality of O-rings may be fitted in a plurality of grooves.

Next, a fifth embodiment will be described.
In the fifth embodiment shown in FIG. 6, the shape of the protrusion 26 provided inside the flexible portion 25 is deformed and the elastic ring member 28 is formed into a cylinder. Other structures are the same as those of the first embodiment. The same.

In the fifth embodiment, as shown in FIG. 6, the flexible portion 25 has a shape in which a protruding portion 26 protruding inward has a length in the axial direction of the flexible portion 25 and is curved in the width direction. It has become. Further, a groove portion 27 is formed on the outer side of each flexible portion 25 at a position corresponding to the front and back of the protrusion 26.
A cylindrical elastic ring member 28 is fitted in the groove 27 so as to cover the groove 27. The elastic ring member 28 fitted in the groove 27 in this way exhibits an elastic tightening force with respect to the protrusion 26.

On the other hand, the pierce post P is provided with a recess 29 on the front end side of the pierce post P corresponding to the protrusion 26.
Since the projection 26 has a length in the axial direction of the flexible portion 25 and is curved in the width direction, the contact area between the projection 26 and the pierce post P is widened. If the contact area is thus increased, the holding force to the pierce post P is increased, and the pierce post P is difficult to be detached from the pierce catch C.
In addition, in this 5th Embodiment, although the elastic ring member 28 is made into the cylinder, you may close the end of a cylinder and make it into a bag shape.

In each of the above embodiments, the flange 12 is integrally formed by pressing the tip of the pipe. However, a member to be the flange may be attached to the pipe by brazing or the like.
In each of the above embodiments, the post holding member 9 is made of a metal material. However, any material can be used as long as it can hold the pierce post P by exerting the elastic force of the elastic ring member. It does not matter. For example, it may be made of resin.

Furthermore, in each embodiment, the piercing post P used for the piercing catch C is provided with one or a plurality of recesses at a predetermined position on the tip side of the piercing post P, but the piercing post P provided with no recesses. Can also be used.
When holding the pierce post P without such a recess, the elastic force of the elastic ring member is directly exerted on the protrusion as a clamping force to hold the pierce post P.

  The present invention is most suitable for a piercing catch holding a piercing post.

  P ... Piercing post, 1 ... Main decorative body, C ... Piercing catch, 2 ... Sub decorative body, 9 ... Post holding member, 10 ... Tube part, 11, 20, 25 ... Flexible part, 14, 21, 22, 26 ... Projection, 15 ... Stopper, 16, 27 ... Groove, 17, 18, 19, 28 ... Elastic ring member

Claims (3)

A piercing catch holding a piercing post to which a main decorative body is fixed,
Sub-decorative body,
A post holding member fixed in the sub-decorative body,
The post holding member is
A cylindrical portion formed on the root side and a plurality of flexible portions extending from the cylindrical portion toward the tip and spaced in the circumferential direction of the cylindrical portion,
Each of the flexible parts is formed with a protrusion protruding inward, and an elastic ring member is fitted on the outer periphery of the flexible part,
The inner diameter of the circle formed by the combination of the protrusions provided on the plurality of flexible portions is made smaller than the outer diameter of the pierce post,
The elastic ring member is a piercing catch that exhibits an elastic contraction force in a direction of tightening the flexible portions with respect to the flexible portions.   The piercing catch according to claim 1, wherein the elastic ring member is fitted at a position substantially corresponding to the protrusion of the flexible portion.   The piercing catch according to claim 1, wherein a plurality of the protrusions are provided in a longitudinal direction of the flexible part.

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