JP2008017977A - Catch for pierced earring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a catch for a pierced earring capable of exerting a sufficient clamping force to a pin of an ornament body and eliminating any possibility of metal allergy. <P>SOLUTION: This catch for the pierced earring is provided with a metal spring member 1 consisting of a metal base plate 3 formed with a pin hole 5 at the central part, and a pair of bent parts 4 and 4 integrally formed with the base plate 3, continued from the both sides of the base plate and curled by bending; the pair of bent parts 4 and 4 retain clamping forces for clamping a pin 7 inserted between a mutually opposed portion of the pair of bent parts 4 and 4; the whole body of the spring member 1 is covered with a resin elastic body 9; the resin elastic body 9 is formed with a pin insertion hole 10 penetrating through the pin hole 5 and the bent parts 4 and 4; and the pin inserted in the pin insertion hole 10 is retained by the clamping forces of the bent parts 4 and 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a catch for a pierced earring for holding a pin provided on a decorative body of the pierced earring.

As a piercing earring catch for pinching a pin provided on a pierced decorative body, there has been one described in Patent Document 1.
This pierced earring catch C1 is obtained by covering a metal spring member 1 with a rubber elastic body 2, as shown in FIG.
As shown in FIG. 12, the spring member 1 includes a substantially circular substrate 3 and a pair of curved portions 4 formed by bending on both sides of the substrate 3. The pair of curved portions 4 and 4 exhibit an elastic force in a direction in which they face each other.

The catch C1 exposes only the surface of the substrate 3 in the spring member 1 and covers the other part with a rubber elastic body 2 such as silicon rubber. At this time, the rubber elastic body 2 is also filled in the curved portion 4.
Further, a pin hole 5 is formed in the center of the substrate 3. The axis of the pin hole 5 thus configured is located between the pair of curled portions 4 curled.
Further, as shown in FIG. 11, when the pin 7 provided on the earring decoration 6 is inserted into the rubber elastic body 2 from the pin hole 5, the pin 7 passes between the curved portions 4 and 4. Thus, a pin insertion hole 8 for penetrating the rubber elastic body 2 is formed.

When attaching the pierced earring using the catch C1 as described above, when the pin 7 is inserted into the pierced hole formed in the ear, the pierced earring catch C1 is brought to the back side of the ear, and the pin 7 is The pierce earring catch C1 is inserted into the pin insertion hole 8 from the front side of the substrate 3.
When the pin 7 is advanced as it is, the pin 7 advances through the pin insertion hole 8 formed in the rubber elastic body 2 and is inserted between the pair of adjacent curved portions 4. Therefore, the curved portions 4 and 4 are expanded against the elasticity and exert an elastic force in the direction in which the pin 7 is sandwiched.
Such a piercing earring catch C1 is strong because the pin 7 inserted into the pin insertion hole 8 is clamped by the elasticity of the pair of curved portions 4, 4 and the elastic force of the rubber elastic body 2. A pinching force can be obtained.
JP 2001-120313 A

  When the pierced earring is attached as described above, the substrate 3 of the pierced earring catch C1 comes into contact with the ear. For this reason, a person who is allergic to metal may have an allergic reaction such as a rash on the part in contact with the substrate 3, and may not be able to use the catch C1.

In order to prevent such metal allergy, a catch for pierced earrings using silicon rubber or the like and not using metal has also been proposed. However, such a catch for pierced earrings made of silicon rubber has a drawback that its clamping force is weaker than that of a metal spring member. In particular, when the temperature is high, such as in summer, the rubber becomes soft and the tightening force is weakened, and the pin 7 may sweat and become easy to come off.
An object of the present invention is to provide a catch for pierced earrings that can exhibit a sufficient holding force with respect to a pin of a decorative body and does not have a concern about metal allergy.

  1st invention consists of a metal board | substrate which formed the pin hole in the center part, and a pair of curved part which was formed integrally with this board | substrate, and was continued from the both sides of the board | substrate, and was curled by the bending process. A metal spring member is provided, and the pair of curved portions are configured to hold a pinching force for pinching the pins inserted between the opposing portions, and all the spring members are covered with a resin elastic body, This resin-made elastic body is characterized in that a pin insertion hole penetrating between the pin hole and the bending portion is formed, and the pin inserted into the pin insertion hole is held by the clamping force of the bending portion.

The second invention is characterized in that, on the premise of the first invention, a pin introducing portion for guiding the pin to the opening of the pin insertion hole is formed around the pin insertion hole formed in the resin elastic body. Have.
The third invention is premised on the first and second inventions, and is characterized in that a knob portion comprising an annular recess is formed on the outer periphery of the resin elastic body.

According to the first to third aspects of the invention, the metal spring member is covered with the elastic body made of resin, thereby suppressing the spread between the curved portions holding the pin and maintaining a strong holding force.
Moreover, since the metal is not exposed on the catch surface, there is no need to worry about metal allergy. For this reason, it is possible to provide a catch that can be used by people with allergies without worrying about selecting an expensive metal material that is less worried about allergies and that can secure spring force.

In the second aspect of the invention, since the introduction portion for guiding the tip of the pin is provided at the opening of the pin insertion hole, the pin can be easily inserted by groping when the earrings are attached.
Also, according to the third aspect of the present invention, by providing the knob portion on the catch for the pierced earring that is small and difficult to grasp, it becomes possible to pinch stably and the earring can be easily attached.

1st Embodiment of this invention is described using FIGS.
The pierce earring catch C2 according to the first embodiment is shown in FIGS. 1 and 2. The shape of the resin elastic body 9 obtained by crushing the sphere up and down is the outer shape of the catch C2. The resin elastic body 9 is formed of an elastic resin such as silicon rubber, and a metal spring member 1 is provided therein as shown in the sectional view of FIG. However, this spring member 1 is omitted in FIG. The spring member 1 is the same member as the conventional spring member 1 shown in FIG. Therefore, detailed description of the spring member 1 is omitted here.

In addition, a pin insertion hole 10 penetrating in the vertical direction in FIGS. 1 and 2 is formed in the resin elastic body 9, and a knob of the present invention is formed on the outer periphery along a diameter orthogonal to the pin insertion hole 10. An annular recess 11 serving as a portion is formed. Further, a mortar-shaped recess 12 is formed on the upper surface, and one opening 10a of the pin insertion hole 10 is positioned at the deepest part in the center.
1 and 2, reference numeral 10 b indicates an opening on the side opposite to the opening 10 a in the pin insertion hole 10. Moreover, the inner diameter of the pin insertion hole 10 is slightly smaller than the outer diameter of the decorative pin 7 (see FIG. 11) to be inserted when the earrings are attached.

Next, the internal structure of the catch C2 of the first embodiment will be described in detail.
In the resin elastic body 9, the pin insertion hole 10 is formed so as to penetrate between the pin hole 5 of the substrate 3 and the pair of curved portions 4, 4. However, in the first embodiment, when the pin 7 provided on the earring decoration is not inserted into the pin insertion hole 10, the opposing portions of the curved portions 4 and 4 are mutually connected as shown in FIG. In contact. Therefore, the pin insertion hole 10 is crushed at the contact portion between the curved portions 4 and 4.

Then, when the pin 7 of the decorative body 6 as shown in FIG. 11 is inserted into the pin insertion hole 10 from the opening 10a, the curved portions 4 and 4 are expanded by the pin 7 as shown in FIG. Become. When the curved portions 4, 4 are pushed and spread in this way, the spring member 1 acts as a leaf spring, exerts an elastic force in a direction to close the curved portions 4, 4, and pinches the pin 7.
That is, in the first embodiment, the configuration in which the pair of bending portions 4 and 4 are in contact with each other at the facing portion corresponding to the pin insertion hole 10 in a state where the pin 7 is not inserted is the bending according to the present invention. It is the structure which hold | maintains the clamping force which clamps the pin inserted between the opposing parts of a part.

However, the configuration for holding the clamping force is not limited to the configuration in which the curved portions 4 and 4 are in contact with each other in a state where the pin 7 is not inserted. For example, as shown in FIG. 5, even if the facing portions of the curved portions 4 and 4 are separated from each other, if the distance d1 is smaller than the diameter of the pin 7, the curved portions 4 and 4 are inserted when the pin 7 is inserted. Is spread, and a clamping force based on the elastic force of the leaf spring can be obtained.
When a force in a direction to widen the opposing portions of the curved portions 4 and 4 is applied, a force in a direction to deform the substrate 3 into a V shape is applied. In the catch C2 of the first embodiment, a spring is used. Since all of the member 1 is covered with the resin elastic body 9, the deformation of the substrate 3 can be suppressed.

  For example, in the catch C1 of the conventional example, the substrate 3 of the spring member 1 is exposed from the rubber elastic body 2, so that a force in a direction to widen the opposing portions of the curved portions 4, 4 acts, and the substrate 3 is V-shaped. When the force in the upward deformation direction is repeatedly applied, the substrate 3 may be deformed and the return of the curved portions 4 and 4 may be deteriorated. In that case, the clamping force with respect to the pin 7 is weakened. However, in the catch C2 of the first embodiment, the surface of the substrate 3 is completely covered with the resin elastic body 9 so as to suppress deformation. As a result, a high clamping force can be exhibited, and even when it is repeatedly used, the substrate 3 is prevented from being deformed and the durability as a catch is improved.

  When using the pierced earring catch C2 of the first embodiment, the pin 7 provided on the decorative body 6 is inserted into the pierced hole opened in the ear and penetrated. Then, on the back side of the ear, the pin 7 is received by the piercing catch C2. At this time, if the tip of the pin 7 penetrating the ear is moved along the slope of the mortar-shaped recess 12 of the catch C2, the tip of the pin 7 is easily guided to the opening 10a located at the deepest part of the recess 12. The pin 7 can be easily inserted into the pin insertion hole 10 of the catch C2. That is, this mortar-shaped recessed part 12 comprises the pin introduction part of this invention. However, the shape of the pin introduction portion is not limited to the mortar-shaped recess, and any shape may be used as long as the tip of the pin 7 is guided to the opening 10 a of the pin insertion hole 10. For example, a linear groove continuous with the opening 10a may be used.

Further, when the pin 7 is received by the catch C2, the annular recess 11 formed on the outer periphery of the catch can be pinched with the fingertip or the tip of the nail, so that the small catch C2 can be reliably held.
As described above, the pierce earring catch C2 according to the first embodiment is easily pinched by the annular recess 11 that is a knob portion, and the pin 7 of the decorative body can be easily inserted into the pin insertion hole 10 by the recess 12 that is the pin introduction portion. The earrings can be easily installed.
Moreover, since the metal spring member 1 does not come into contact with the ear during the wearing operation of the earring or at the time of wearing, even a person with a metal allergy can use it with peace of mind.

Furthermore, since the metal spring member 1 is not exposed on the surface at all, it is not necessary to select a material that does not easily cause allergies, and an inexpensive material can also be used.
Further, as described above, by covering with the resin elastic body 9, it is possible to suppress the spread of the curved portions 4 and 4 of the metal spring member 1 and increase the clamping force. The clamping force of the member 1 alone can be weakened. For example, regardless of the elastic force, the material cost can be saved by selecting an inexpensive material or by reducing the thickness of the plate member forming the spring member 1.

Such a piercing earring catch C2 is manufactured as follows.
First, a metal plate member is punched and then bent to form the spring member 1 shown in FIG. The formed spring member 1 is set in the first mold 13 shown in FIG. The 1st shaping | molding die 13 is a type | mold which has the inner peripheral surface corresponding to the shape by the side of the opening 10b of the said piercing earring catch C2, and has pin 14 standing upright in the center. The pin 14 includes a base-side large-diameter portion 14a and a tip-side small-diameter portion 14b, and includes a step portion 14c between the large-diameter portion 14a and the small-diameter portion 14b. Further, the outer diameter of the small diameter portion 14 b is set to be equal to or smaller than the pin hole 5 of the spring member 1, and the outer diameter of the large diameter portion 14 a is made larger than the inner diameter of the pin hole 5. However, the outer diameter of the large diameter portion 14a is also equal to or smaller than the outer diameter of the pin of the decorative body inserted into the pin insertion hole 10.
The large-diameter portion 14a and the small-diameter portion 14b are both set to be equal to or smaller than the outer diameter of the pin 7 of the decorative portion, and the difference between the two is slight, but is extremely shown in FIGS.

The pin hole 5 is fitted into the small-diameter portion 14 b of the pin 14 and the spring member 1 is pushed into the stepped portion 14 c to set the spring member 1 on the first mold 13. At this time, the space between the curved portions 4 and 4 of the spring member 1 is widened by the outer diameter of the large-diameter portion 14a of the pin.
When the spring member 1 is set on the first mold 13, as shown in FIG. 7, the ring-shaped second mold 15 is placed on the first mold 13, and further the third mold 16 is placed thereon. Put on. The second mold 15 is a mold for forming the annular recess 11 serving as a knob portion, and the third mold 16 is a mold having an inner periphery corresponding to the shape of the catch C2 on the opening 10b side. .
Then, silicon resin 9 ′ is poured into the space surrounded by the first mold 13, the second mold 15 and the third mold 16, and this is solidified to remove all the molds. When the mold is removed, the pierced earring catch C2 is completed.

  The outer shape of the catch C2 is a shape corresponding to the inner peripheral shapes of the first molding die 13, the second molding die 15, and the third molding die 16, and the first molding die is formed inside the resin elastic body 9. A pin insertion hole 10 is formed by the pin 14 of the mold 13. However, when the pin 14 is pulled out, the curved portions 4 and 4 of the spring member 1 return to the initial state by deforming the elastic body 9 made of resin, and are brought into contact with each other as shown in FIG. In addition, the pin insertion hole 10 is narrowed. In any case, in the completed catch C2, the distance between the curved portions 4 and 4 is smaller than the outer diameter of the pin 7 of the decorative body.

As described above, when the pin insertion hole 10 is formed by molding, if the resin does not enter between the pin 14 of the first molding die 13 and the contact point between the bending portion 4, the facing portion of the bending portions 4 and 4. The resin elastic body 9 is not in contact with the pin 14 in this case, and the inserted pin 7 is directly held between the metal surfaces. As described above, the state in which the resin does not enter the contact point between the facing portions of the curved portions 4 and 4 and the pin insertion hole 10 is also regarded as a state in which all the spring members of the present invention are covered with the resin elastic body. .
Of course, resin may enter between the pin 14 and the curved portion 4 at the time of molding. In that case, the resin elastic body 9 is positioned between the curved portions 4 and 4, and the decorative pin 7 is sandwiched between the curved portions 4 and 4 through the resin elastic body 9.

In the first embodiment, the inner diameter of the pin insertion hole 10 in the resin elastic body 9 is made smaller than the outer diameter of the pin 7 to be inserted. A force acts and the pin 7 can be pinched more strongly. However, the resin elastic body 9 may function only to suppress the spread of the spring member 1. That is, the inner diameter of the pin insertion hole 10 in the resin elastic body 9 may be larger than the outer diameter of the pin 7 of the decorative body.
In the first embodiment, since the pin insertion hole 10 is formed using the pin 14 having the stepped portion 14c as a mold, a stepped portion can be formed on the inner periphery of the formed pin insertion hole 10, but a slight amount This is a step and does not cause a problem when the pin 7 is inserted.

Further, the pin 14 may have a tapered shape with a thin tip. In this way, the pin hole 5 of the spring member 1 can be stopped in the middle of the pin 14 and set in the first mold 13 without forming the step 14c. In this case, the formed pin insertion hole 10 is also tapered.
Further, if such a tapered pin is used, even if there is a slight error in the inner diameter of the pin hole 5 formed in the spring member 1, the spring member 1 is placed at the outer diameter position of the pin 14 that matches the inner diameter. Can be matched and set.

  Further, the first mold 13 and the third mold 16 shown in FIG. 7 may be turned upside down, and the pins 17 may be provided on the third mold 16 as shown in FIG. In this case, a pin 17 having a stepped portion 17c is provided at the center of the third mold 16 with the base end side being a large diameter portion 17a and the tip end side being a small diameter portion 17b. The substrate 3 of the spring member 1 is brought into contact with the step portion 17c of the pin 17 to set the spring member 1, and after the liquid resin 9 'is poured, the resin is solidified. If the mold is removed, a catch similar to the pierce earring catch C2 can be formed.

However, when the method of FIG. 8 is used, the small-diameter portion 17b of the pin 17 is located between the curved portions 4 and 4 at the time of molding, so that the large-diameter portion 14a is molded as shown in FIG. Compared with that, the size of the space between the curved portions 4 and 4 is reduced, and after the pin 17 is pulled out, the curved portions 4 and 4 return better. Therefore, the manufacturing method shown in FIG. 8 is particularly suitable for catches used in pierced earrings having thin pins.
In addition, when not forming the annular recessed part 11 used as a knob part in the catch surface, the said 2nd shaping | molding die 15 can be abbreviate | omitted.

Furthermore, the spring member 1 of the catch C2 may be rotated 180 degrees in the resin elastic body 9. Thus, the pierce earring catch C3 of the second embodiment provided by rotating the spring member 1 by 180 degrees is shown in FIGS.
As shown in FIG. 9, this catch C3 can also be formed in the same manner as the catch C2 of the first embodiment with the first to third molds 13, 15, and 16. In the second embodiment, a pin 18 having a large diameter portion 18a at the proximal end side and a small diameter portion 18b at the distal end side is erected at the center of the first mold 13, and the substrate 3 is formed on the step portion 18c of the pin 18. And the spring member 1 is set, and then the second and third molding dies 15 and 16 are placed and the resin 9 ′ is poured to mold the catch C3.
In the mold shown in FIG. 9, the first mold 13 on the side where the opening 10b is formed is provided with the base end of the pin 18, but as shown in FIG. The base end of the pin 18 may be provided here.

The catch C3 according to the second embodiment formed as shown in FIG. 9 is, after the pin 7 of the decorative body inserted from the opening 10a is sandwiched between the curved portions 4 and 4, as shown in FIG. Although passing through the pin hole 5 of the substrate 3, there is no worry of metal allergy at the time of mounting, and the point that it can be securely clamped is the same as in the first embodiment.
Moreover, since the board | substrate 3 of the spring member 1 faces the back side of an ear | edge at the time of mounting | wearing with the catch C3 of this embodiment, the board | substrate 3 can see through the resin-made elastic body 9 from back. Thus, since the board | substrate 3 can be seen from the exterior, the decorativeness from the back can also be raised with the outline, color, etc. of the board | substrate 3. FIG.

  In the catch C <b> 2 of the first embodiment, the curved portions 4, 4 of the spring member can be seen from the resin elastic body 9, but the curved portions 4, 4 have a shape required to hold the pin 7. Therefore, it is not possible to change the shape to make it decorative. Further, since the area seen through the resin elastic body 9 is small, for example, even when 18 gold is used, the color is hardly visible, but the substrate 3 has a large area, so it can show precious metal. it can. Therefore, it is possible to obtain a decorative property that is not found in a simple resin catch.

It is a perspective view of the catch for pierced earrings of 1st Embodiment. It is the II-II sectional view taken on the line of FIG. FIG. 3 is a partially enlarged sectional view of FIG. 2. It is an expanded sectional view of the state where the pin was inserted in the catch for piercing earrings of a 1st embodiment. It is a partial expanded sectional view of other embodiments. It is sectional drawing of the 1st shaping | molding die of the catch for earrings in 1st Embodiment. It is sectional drawing of the shaping | molding die of the catch for piercing earrings in 1st Embodiment. It is sectional drawing of the shaping | molding die used for another manufacturing method of the catch for earrings earrings in 1st Embodiment. It is sectional drawing of the shaping | molding die of the catch for earrings earrings in 2nd Embodiment. It is sectional drawing of the catch for earrings earrings in 2nd Embodiment. It is sectional drawing of the catch for piercing earrings of a prior art example. It is a perspective view of the spring member of the catch for earrings earrings in a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spring member 3 Board | substrate 4 Bending part 5 Pin hole 7 Pin 9 Resin elastic body 10 Pin insertion hole 10a Opening 11 Annular recessed part 12 Recessed part

Claims (3)

  A metal spring member comprising a metal substrate having a pin hole formed in the central portion and a pair of curved portions formed integrally with the substrate and continuous from both sides of the substrate and curled by bending. The pair of curved portions is configured to hold a clamping force for clamping the pin inserted between the opposing portions, and the spring member is entirely covered with a resin elastic body. Is a piercing earring catch configured to form a pin insertion hole penetrating between the pin hole and the bending portion, and to hold the pin inserted into the pin insertion hole by the clamping force of the bending portion.   The pierce earring catch according to claim 1, wherein a pin introducing portion for guiding the pin to the opening of the pin insertion hole is formed around the pin insertion hole formed in the resin elastic body.   The piercing earring catch according to claim 1 or 2, wherein a knob portion comprising an annular recess is formed on the outer periphery of the resin elastic body.

Images