JP3254438B2 - Retaining device in piercing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inserting a shaft into a hole formed in an earlobe or the like to prevent a pierced earring from being worn.

[0002]

2. Description of the Related Art When earrings are worn on earlobes, they are usually fixed with small pieces of metal called clasps or catches. However, a device integrated with the body of the piercing has been proposed because the small piece is difficult to handle because it is too small, and it is easy to lose or the function to stop the piercing is easy. For example, Japanese Utility Model Publication No. 7-31693. Is one of them.

[0003] In the device of the present invention, called a stopper, a retaining piece is rotatably mounted on the tip of a pin, and is extended to the opposite side of the retaining portion by a spring housed inside the pin. It has a configuration in which the lever is pushed and the earlobe (lobe) is kept at a position sandwiching the lobe with the decorative body. If the retaining piece is formed and acts according to this configuration, it can be expected that a corresponding effect can be expected, but it is presumed that it actually involves the following problems. I. Since the retaining piece is held at the position where the earlobe is sandwiched or extended linearly only by the spring pressing the end face of the lever, the end face of the lever is free to the pressing piece pressed by the spring. Can move. This means that the position of the lever is not fixed. B. When the shaft of the piercing, that is, the pin of the present invention is made of metal, even the thickest one has a diameter of about 0.9 mm, and in this case, the inner diameter is about 0.7 mm. Therefore, a strong spring that can fix the position of the lever only by the pressing force due to is required. C. A strong spring requires a structure that supports the strong spring to have strength, and a material that can withstand this strength requires special materials for the material and its processing. D. The positioning accuracy of the pressing piece and the spring for pressing the pressing piece inside the pin is not guaranteed at all, and it is not known where the end face of the lever is to be pressed.

A particular problem is that this type of device has a diameter of 1 mm.
The difficulty is based on the fact that it consists of micro precision machined parts which are incorporated into a shaft not exceeding mm. In such precision machining, the numerical value of the target part is at least one digit or two digits smaller than that of commonly performed machining, which corresponds to an error of generally performed machining. For this reason, it is already difficult to obtain the expected movement stably. Therefore, in the above-mentioned invention, a. B. Due to the problems of (c) and (d), it is also expected that practical use cannot be expected due to excessively large variations.

[0005]

Therefore, when an intended function is to be exerted for an apparatus composed of precision parts for handling minute objects, it is necessary to incorporate a device different from that for handling larger parts. Otherwise, the intended purpose cannot be achieved. SUMMARY OF THE INVENTION It is an object of the present invention to provide a pierce retaining device which has little variation and can be securely inserted and removed from an earlobe.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an extension of a shaft when inserted into a hole formed in an earlobe or the like, and a crossing direction with the shaft to prevent the shaft from slipping out after insertion. A retaining member rotatably coupled to the end of the shaft portion so as to bend, and a pressurizing body having a curved surface provided under the pressure of a spring at a coupling portion side of the retaining member with the shaft portion. And, in each state of the state where the retaining member is extended in the extending direction of the shaft portion and the state where the retaining member is bent in the cross direction with respect to the shaft portion, it is possible to engage with the curved surface of the pressing body. Means is provided in which a retaining device for the piercing is formed by the engaging means including the concave engaging partner provided at the end of the shaft.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The piercing retaining device of the present invention is for preventing the piercing from coming off when worn by inserting the shaft into a hole formed in an earlobe or the like. For this reason, the present invention accurately positions the retaining member in a bent or stretched state so as not to move carelessly.

The device according to the present invention first requires a retaining member. When inserted into a hole in an earlobe or the like, this retaining member extends in the direction of extension of the shaft, and after insertion, can be rotated around the end of the shaft so that it bends in the direction crossing the shaft to prevent it from falling out Is combined with The rotatable connection of the retaining member to the end of the shaft is an indispensable condition, but it is easy to maintain high precision of the rotatable connection between the shaft and the retaining member.

The retaining member is provided with a pressurizing member having a curved surface which is placed under the pressure of the spring at the joint portion between the retaining member and the shaft portion. In other words, a spring and a pressurizing body are incorporated in the retaining member, and the pressurizing body is arranged on the joint portion side with the shaft portion, and receives the pressing force of the spring arranged on the side other than the joint portion side. Is done. Therefore, as the retaining member, for example, a pipe-shaped member having a hollow portion into which the pressurizing body and the spring are incorporated and having an open joint portion side is used. Such a pipe-shaped material is easily available with high precision, and the shaft hole for coupling with the shaft part of the pierce can be easily processed while maintaining high precision.

In each of a state in which the retaining member is extended in the direction in which the shaft portion extends and a state in which the retaining member is bent in a direction intersecting with the shaft portion, the retaining member is engaged with the curved surface of the pressing body. A possible concave engagement partner is provided at the end of the shank. The engaging partner portion holds the retaining member in each of an extended state and a bent state by engaging with the curved surface of the pressing body, in other words, the engaging member includes the pressing body and the engaging partner. The engaging means is also a means for positioning the retaining member.

It is a preferable choice to make the curved surface of the pressing body a spherical surface. The spherical surface is easy to process, and high precision can be easily obtained. This spherical surface may be formed in a part of a certain member, or the whole member may be formed of a sphere. As a spherical pressurized body, for example, a ball for a ball bearing can be diverted, and a highly accurate sphere can be easily obtained. The concave portion of the mating partner may be a spherical surface, but need not be, and a cylindrical curved surface may be sufficient, or may be a shallow V-shaped concave portion. In the case of a cylindrical curved surface, the radius of the cylinder may be approximately the same as the radius of the spherical surface of the pressing body.

A plurality of the above-mentioned engagement partners are provided on the circumference of a fixed radius centered on the shaft hole around the bearing provided at the end of the shaft for the shaft connection with the retaining member. It is desirable that a protrusion be provided between them. The bearing portion having this engagement partner is provided at the end of the shaft portion of the pierce,
An independent member having the above-described shape and structure may be fixed to the end of the shaft portion, or the above-described shape and structure may be formed at the end of the shaft portion. Therefore, precision machining for forming an engagement partner on the bearing portion is not particularly difficult work, and the positioning means enables the retaining member with a sense of moderation to be held at each bending and extending position.

In the present invention, the above-mentioned spring is used to keep the pressurizing body engaged with the mating part constituting the positioning means, and its pressing force needs to be particularly strong. Absent. This point is most different from the above-mentioned invention in which a particularly strong spring is required to hold down and fix the end surface of the lever only by the pressing force of the spring.

[0014] The retaining device in the piercing of the present invention is
A retaining member is attached to the end of the shaft portion of the pierce by a shaft connection, and the retaining member is positioned in an extended state and a bent state by a pressing body under the pressure of a spring. The retaining effect remains unchanged regardless of whether the retaining member in the bent state faces up, down, left, or right. However, in many cases, it is considered desirable to design the state in which the retaining member faces upward as a standard in terms of preventing the retaining member. See FIG.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 show the first embodiment, and
The device A of the present invention is assembled to the tip of the shaft portion 12 having the following. A commercially available metal pipe material can be used for the shaft portion 12,
A shaft bearing 13 provided at the tip for shaft connection is fixed by caulking K after being fitted as a separate independent member.

The retaining member 15 is rotatably connected to a shaft hole 14 formed in the bearing 13 of the shaft 12 by a support shaft 16. The illustrated support shaft 16 is driven into the shaft hole 14 and fixed, but is rotatably inserted into the shaft through hole 17. The retaining member 15 is formed by processing a pipe material to form a space 18 for receiving the shaft hole 14 and the bearing 13.

The inside 19 of the retaining member 15 has a spherical surface 2
A mushroom-shaped pin-shaped pressing body 21 having zero and a coil-shaped spring 22 are incorporated. The spherical surface 2 at the tip of the pressure body 21
Reference numeral 0 denotes two or more concave portions 23 ₁ having a cylindrical curved surface provided around the shaft hole 14 of the bearing portion 13 as an engagement partner.
23 ₂ ... are engageable under pressure of the spring 22, constitute the positioning means of the retaining member 15. In the case of illustration, 1
Stop member 15 exits the engagement with the central recess 23 ₁ and pressure member 21 locations is an extended state to the extending direction of the shaft portion,
When the pressing body 21 engages with any of the other two lateral concave portions 23 ₂ , 23 ₂ , the retaining member 15 is bent. See FIG.

The pressing body 21 having the spherical surface 20 can be replaced with a spherical pressing body 24. As described above, a ball of a ball bearing can be used as the spherical pressing body 24. In the case of the first embodiment using the pipe as it is, the other end opening of the retaining member 15 is
5 closed.

3 and 4 show a second embodiment of the apparatus A according to the present invention. In the second embodiment, the shaft portion 12 'and the retaining member 15'
The support shaft 16 'is made of a plastic part, and other configurations may be substantially the same as those in the first embodiment. Shaft 12 '
Is slightly larger than that of the first embodiment and has a diameter of 1 mm, and the retaining member 15 'has the same diameter. The shaft bearing 13 'is the shaft 1
It is provided by molding at the end of 2 '. Also spherical surface 20
Can be used interchangeably with the spherical pressing body 24 together with the pressing body 21 having the same. The spring 22 has the same size and strength as those of the first embodiment.

The support shaft 16 'in the second embodiment has a T-stud tapered pin structure and is fixed by being driven into the shaft hole 14, while being rotatably inserted into the shaft through hole 17. Also in the case of the second embodiment, the coil spring 22 is housed inside the retaining member 15 ', and one of the pressurizing bodies 21 and 24 is set at the coupling side end, and the engagement partner 2 is set.
The support shaft 16 'is assembled through the shaft hole 14 and the shaft through hole 17 while being pressed against any of the concave portions 23 ₁ , 23 ₂ ′. However, since the other end of the retaining member 15 'is closed, no plug is required.

In the apparatus of the present invention, the retaining member 1
By making 5, 15 'extend in the direction of extension of the shaft portions 12, 12', the piercing can be worn by inserting the shaft portions 12, 12 'into the hole H opened in the earlobe Y. it can. At this time, engagement of retaining 'the shaft portion 12, 12' members 15 and 15 and is, pressurizer 21 and 24 stably seated in the recess fits in the engagement counterpart 23 ₁ at the curved surface So that the shaft portion 1 can be removed from the retaining members 15, 15 '.
The insertion of the shaft body into the earlobe up to 2, 12 'can be performed with confidence.

When worn on the earlobe Y, the retaining member 15
15 'is bent (see FIG. 2 (a) and each chain line in FIG. 4).
5 'rotation operation by enter beyond the projection 26 between either from the engagement counterpart 23 _first central both sides of the engagement counterpart 23 _2, 23 ₃ of the stably seated in the recess, the shaft portion 12, 1
2 'is bent in a substantially L-shape with respect to 2'. Protrusion 2
6, the operation state of the retaining members 15, 15 'is sensed at the fingertips by the retraction against the springs 22 of the pressing bodies 21, 24,
Sitting on the engagement partners 23 ₁ , 23 ₂ , and 23 ₃ is also sensed by the fingertip, so that even an invisible fingertip operation can be reliably sensed.

As described above, the pressing force of the spring 22 contributes to the positioning of the engaging means for keeping the retaining members 15, 15 'in the extended state and the bent state, and at the same time, imparts a moderation to the operation feeling and operates the operation means. It is particularly useful for wearing and removing piercings as it allows the fingertip to sense torque variations.

[0024]

Since the present invention is constructed and operates as described above, the spring only needs to act as a part of the engagement for keeping the retaining piece in the state where the shaft portion is extended and in the bent state. There is no need to use a particularly strong spring, and since each component is easy to maintain high precision, the desired device can be easily formed, so that the desired movement can be obtained stably. This type of piercing can be worn and removed comfortably in combination with the effect that a moderate operation feeling can be obtained by the spring and the spring.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a retaining device for a piercing according to the present invention.

FIG. 2A is a cross-sectional view of a state where a retaining member is bent. (B) Sectional drawing of the state which extended the retaining member. (C) Sectional drawing of the device of Example 1 in which the pressurizing member is a ball.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 4 is a side view showing a part of FIG.

FIG. 5 is an explanatory view when a piercing to which the present device is applied is worn.

Claims (3)

(57) [Claims] 1. A device for preventing a pierced ear from being worn by inserting a shaft into a hole formed in an earlobe or the like, and extending in a direction in which the shaft is extended when the shaft is inserted into a hole formed in the earlobe or the like. Stretching, to prevent bending after insertion in the direction of intersection with the shaft, so as to bend in the direction of intersection with the shaft, at the side of the joint between the shaft and the shaft of the stopper, the stopper is rotatably connected to the end of the shaft. A pressurized body having a curved surface, provided under the pressure of a spring, and a state in which a retaining member is extended in a direction in which the shaft portion extends,
An engagement including a concave engagement partner provided at an end of the shaft so as to be able to engage with the curved surface of the pressing body in each state in which the retaining member is bent in a direction crossing the shaft. Means for preventing piercing from falling off. 2. The retaining device for a piercing device according to claim 1, wherein the pressing body has a spherical surface or is formed of a spherical surface. 3. The pierce retaining device according to claim 1, wherein a plurality of engaging partners are arranged at a predetermined radius centered on a shaft hole for attaching the retaining member to the shaft portion with a projection provided therebetween. apparatus.