JP2010115250A - Catch for pierced earring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely enable holding a pin without deforming a leaf spring even if external force for putting in or pulling out the pin affects the leaf spring. <P>SOLUTION: The catch for a pierced earring includes a receiving plate 3 formed of a pin insertion hole 5, a pair of leaf springs 4 integrated in the receiving plate 3, risen toward the back of the receiving plate 3, and curled by bending, linear concave parts 6 formed on the front sides of these leaf springs 4, and linear convex parts 7 formed on the back sides by the linear concave parts 6. When a pin 1 provided in a decoration body is inserted into a pin insertion hole 5 from the front side of the receiving plate 3, the pin 1 is held by the elastic force of the pair of the leaf springs 4. A cut 8 is formed at each edge 4b of the leaf springs 4 at the center in the width direction. The cut 8 straddles the linear convex parts 7 on the back side of the receiving plate 3 or the back sides of the leaf springs 4 to make the edges 4b of the leaf springs 4 contact with the back face of the receiving plate 3 or the back faces of the leaf springs 4. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a piercing catch for holding a pin provided on a decorative body.

A conventional piercing catch will be described with reference to FIGS.
As shown in FIG. 4, the piercing includes a decorative body 2 provided with a pin 1 and a piercing catch C described later.
When this piercing is used, although not specifically shown, the pin 1 provided on the decorative body 2 is inserted into the piercing hole opened in the ear and penetrated. The pin 1 is received by the piercing catch C on the back side of the ear.
The piercing catch C shown in FIG. 5 is made of a noble metal such as gold or platinum, and is formed by molding the plate-like member c1 shown in FIG. 6, and includes a substantially circular receiving plate portion 3 and a side of the receiving plate portion 3 It consists of a pair of leaf | plate spring part 4 shape | molded integrally by the part. 5 and 6, the same reference numerals are given to portions corresponding to each other.

The plate springs 4 and 4 of the plate-like member c1 shown in FIG. 6 each have a shape slightly tapered from the base end 4a toward the tip 4b, and protrude in the outer diameter direction of the receiving plate 3 and the tip 4b is The leaf spring portion 4 is cut in a straight line perpendicular to the length direction.
Further, the plate-like member c1 has a pin insertion hole 5 near the center of the receiving plate part 3, and linear depressions 6 and 6 are formed on the front side of the plate spring parts 4 and 4 by pressing. Yes. When the linear concave portions 6 and 6 are formed by pressing, the linear convex portions 7 and 7 are formed on the back side thereof. And the depth of the said linear recessed parts 6 and 6 is made into the radius of the pin 1 provided in the said decorative body 2 or less.

  A pair of leaf springs 4 of such a plate-like component c1 are erected in the vicinity of the base end 4a toward the back side of the receiving plate part 3 which is the back side of the paper surface, and each tip 4b is connected to the base end 4a. 5 to form a piercing catch C shown in FIG. An axis passing through the center of the pin insertion hole 5 is located between the pair of leaf springs 4 curled in this way, and the pair of curled leaf springs 4 are elastic in the direction adjacent to each other. Will be demonstrated.

  When the pin 1 of the decorative body 2 is inserted into such a piercing catch C, the pin 1 is inserted between the pair of adjacent leaf springs 4 and between the linear recesses 6 and 6. Since the gap formed by the linear recesses 6 and 6 is smaller than the outer diameter of the pin 1, insertion of the pin 1 causes the leaf springs 4 and 4 to be expanded against elasticity. The leaf spring members 4 and 4 exhibit an elastic force in the direction in which the pin 1 is sandwiched.

The reason why the linear concave portions 6 and 6 are formed in the leaf spring portions 4 and 4 is as follows.
As described above, the piercing catch C is formed by bending a noble metal plate member such as gold or platinum to form the leaf spring portions 4 and 4 so as to exert an elastic force.
However, plate members made of noble metals such as gold and platinum are generally soft, and a sufficient clamping force may not be obtained only by bending. In particular, expensive materials cannot be made too thick in terms of cost. Therefore, such a noble metal plate member has poor rigidity and has a limit in elastic force. If the elastic force of the leaf springs 4 and 4 is insufficient, there is a risk that the pinching force of the pin 1 is weakened and the decorative body 2 is lost.

Therefore, in this piercing catch C, ribs are formed on the plate spring portions 4 and 4 by the linear concave portions 6 and the linear convex portions 7 to increase the rigidity of the plate spring portions 4 and 4 to obtain a necessary elastic force. I am trying to do it.
Further, if the pin 1 is inserted between the linear recesses 6 and 6, the pin 1 is held in the direction of the linear recesses 6 and 6, and the pin 1 against the piercing catch C Can be expected to be less inclined.
Registered Utility Model No. 3108522

  In the conventional piercing catch C, the tip 4b of the curled leaf spring portion 4 contacts the back side of the leaf spring portion 4 near the base end 4a, but the piercing catch C is a small part. It is almost impossible to make the curves of the surface on the front end 4b side and the back surface near the base end 4a completely coincide. Therefore, the front surface of the leaf spring portion 4 and the back surface of the base end 4a do not come into contact with each other in the vicinity of the distal end 4b, and the distal end 4b of the leaf spring portion 4 is connected to the leaf spring portion 4 as shown in FIG. It comes to hit the back side.

  And since the front-end | tip 4b of the said leaf | plate spring part 4 is cut linearly, when the front-end | tip 4b collides with the back side of the leaf | plate spring part 4, as shown in FIG. 7, FIG. 8, only the center vicinity of the front-end | tip 4b is shown. However, it comes into contact with the linear convex portion 7 protruding to the back side of the leaf spring portion 4. Thus, since the tip 4b of the leaf spring portion 4 is in contact with the linear convex portion 7 near the center, if an external force in the left-right direction in FIG. 4b may slide on the linear convex portion 7 and shift in the left-right direction with respect to the base end 4a.

In particular, since the insertion direction of the pin 1 is the left-right direction in FIG. 8, when the pin 1 is inserted between the leaf spring portions 4, 4, the left-right force acts, and the tip 4 b is displaced by this force. The shape of the leaf spring member 4 may change.
Thus, if the leaf spring member 4 is deformed in a state where the pin 1 is inserted, the pin 1 cannot be reliably held by the elastic force. Further, if the deformation is repeated by inserting and removing the pin 1, the leaf spring portion 4 may be damaged.

Moreover, since the said linear recessed part 6 and the linear convex part 7 are integrally formed in the front and back of the same board member, since the board member has thickness, the width | variety of the linear convex part 7 is linear. It is larger than the width of the recess 6. Therefore, even if the front surface is in contact with the back surface near the base end 4a in the vicinity of the tip 4b, the linear protrusion 7 does not fit into the linear recess 6, and the right and left in FIG. If an external force in the direction, that is, the width direction of the leaf spring portion 4 is applied, the tip 4b slips on the linear convex portion 7 and the leaf spring member 4 is deformed.
An object of the present invention is to provide a piercing catch that can reliably hold a pin even when an external force is applied to the leaf spring portion by inserting and removing the pin, can reliably hold the pin, and has high durability. That is.

  The present invention includes a receiving plate portion in which a pin insertion hole is formed, a pair of leaf spring portions that are molded integrally with the receiving plate portion, raised toward the back side of the receiving plate portion, and curled by bending, A linear concave portion that is continuous from the front end to the base end or the receiving plate portion on the front side of the pair of leaf spring portions, and a linear convex portion that is formed on the back side by the linear concave portion, and is provided on the decorative body When the pin is inserted into the pin insertion hole from the front side of the receiving plate portion, the pin is located in a linear recess formed in the pair of leaf spring portions, and the elastic force of the curled pair of leaf spring portions is In addition to being configured to be sandwiched, a notch is formed at the center of the pair of leaf springs in the width direction, and this notch forms a linear protrusion on the back side of the backing plate or leaf spring. Also straddle the end of the leaf spring with the receiving plate or plate bar Wherein the contacting the rear surface of the part.

According to the present invention, even if an external force is applied to the leaf spring portion by inserting / removing pins, the tip of the leaf spring portion is not displaced and the leaf spring portion is not deformed. Therefore, the elastic force of the leaf spring portion is maintained, and the pin can be reliably held by the clamping force of the pair of leaf spring portions.
Further, since the deformation is not repeated by inserting and removing the pin, the leaf spring portion is not easily damaged, and the durability of the piercing catch is improved.

1 to 3 show an embodiment of the present invention.
Since the appearance of the piercing catch of this embodiment is the same as that of the conventional piercing catch shown in FIG. 5, FIG. 5 is also referred to in the following description. Moreover, in the piercing catch of this embodiment, the same reference numerals are used for the same constituent elements as in the prior art.
The piercing catch of this embodiment is formed by a plate-like member c2 shown in FIG. The plate-like member c2 is formed by punching a noble metal plate member in the same manner as the conventional plate-like member c1 and includes a pair of plate spring portions 4, 4 on both sides of the receiving plate portion 3. ing. And in each leaf | plate spring part 4, the linear recessed part 6 is formed in the front side, and the linear convex part 7 is formed in the back side.
In FIG. 1, the front side of the paper surface is referred to as the front side of the plate spring portion 4, and the side corresponding to the back side of the paper surface is referred to as the back side of the plate spring portion 4.

However, the plate-like member c2 of this embodiment is different from the conventional plate-like member c1 in that a notch 8 is formed at the tip 4b of the leaf spring portion 4. The notches 8 have substantially the same width and depth as the width and height of the linear protrusion 7.
The pair of leaf springs 4 of the plate-like member c2 is raised near the base end 4a toward the back side of the receiving plate part 3, and each tip 4b is positioned near the back side of the base end 4a. The piercing catch C shown in FIG. 5 is formed by bending. The pin 1 inserted into the pin insertion hole 5 (see FIG. 4) is sandwiched between the pair of leaf springs 4 curled in this way by the elastic force of the pair of leaf springs 4 curled. become.

In the piercing catch formed by the plate-like member c2, the distal end 4b of the leaf spring portion 4 abuts on the back side near the base end 4a, but the notch 8 is formed in the distal end 4b. The notch 8 straddles the linear convex portion 7 protruding to the back side of the leaf spring portion 4, and both sides thereof are in contact with the back surface of the leaf spring portion 4. As shown in FIGS. 2 and 3, since the convex portion 7 is accommodated in the notch 8, the distal end 4b is linear on the base end 4a side even if an external force acts in the left-right direction in FIG. There is no such thing as slipping on the projection 7 and shifting. That is, when the pin 1 is inserted, the leaf spring portion 4 is not deformed. Therefore, the leaf spring portion 4 is not easily damaged.
Therefore, the piercing catch of this embodiment can reliably hold the pin 1 and also has high durability.

In the above embodiment, the width and depth of the notch 8 formed at the tip 4b of the leaf spring portion 4 are made equal to the width and height of the linear convex portion 7. However, the width and depth of the notch 8 are the same. The height may be equal to or greater than the width and height of the linear protrusion 7. However, since the tip 4b of the leaf spring portion 4 may be shifted in the width direction within the width of the cutout, the width of the cutout 8 is preferably closer to the width of the linear convex portion 7.
In the above embodiment, the distal end 4 b of the leaf spring portion 4 is brought into contact with the back side of the base end 4 a, but the distal end 4 b may be brought into contact with the back surface of the receiving plate portion 3. Also in this case, it is configured such that the notch 8 straddles the linear convex portion 7 formed on the back side of the receiving plate portion 3. Thereby, it can prevent that the front-end | tip 4b of the leaf | plate spring part 4 shifts | deviates to a width direction of the leaf | plate spring part 4, and deform | transforms.

It is a top view of the plate-shaped member of an embodiment. It is an enlarged view near the front-end | tip of the leaf | plate spring part of embodiment. It is the III-III sectional view taken on the line of FIG. It is a front view which shows the use condition of a piercing. It is a perspective view of the catch for piercings of a prior art example It is a top view of the plate-shaped member of a prior art example. It is an enlarged view near the front-end | tip of the leaf | plate spring part of a prior art example. It is the VIII-VIII sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pin 2 Decoration body 3 Receiving plate part 4 Leaf spring part 4a Base end 4b Tip 5 Pin insertion hole 6 Linear concave part 7 Linear convex part 8 Notch

Claims (1)

  A pair of plate spring portions formed with pin receiving holes, a pair of plate spring portions formed integrally with the plate portion, raised toward the back side of the plate portion, and curled by bending, and the pair of plates A pin provided on the decorative body, comprising a linear concave portion continuous from the front end to the base end or the receiving plate portion on the front side of the spring portion, and a linear convex portion formed on the back side by the linear concave portion, When the pin is inserted into the pin insertion hole from the front side of the receiving plate portion, the pin is positioned in a linear recess formed in the pair of leaf spring portions and is sandwiched by the elastic force of the curled pair of leaf spring portions. In addition, a notch is formed at the front end of the pair of leaf spring portions in the center in the width direction, and the notch straddles the linear convex portion on the back side of the receiving plate portion or the leaf spring portion. On the back of the backing plate or leaf spring Piercing for the catch, characterized in that it makes touch.

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