JP2022170220A - Ear cuff and manufacturing method therefor - Google Patents

Abstract

To improve simple attachment/detachment property and a decorative effect of an ear cuff.SOLUTION: A method for manufacturing an ear cuff includes a first step for cutting a relatively thin linear material at every constant interval to form each of them in an annular shape by machine work, a second step for joining both end parts of the linear material formed in the annular shape to mold it into an endless annular shape, a third step for compressing right and left side surfaces of the endless annular body to make the right and left side surfaces (width) flat and wide, and a fourth step for cutting a portion of the linear body whose side surface (a wide side) is formed in a flat and wide shape in an annular direction to form a slit. Thus, it is possible to improve easiness of attachment/detachment to/from an ear and improve shape storage ability centered on the slit.SELECTED DRAWING: Figure 3

Description

The present invention relates to an ear cuff, which is one of the decorative items that improve fashionability, and particularly relates to an improvement of an ear cuff for the purpose of improving the decorative effect by attaching it to the ear, etc., and particularly to simplification of wearing on the ear and improvement of the ear cuff. To prevent careless falling off and further improve decorativeness.

Many of the earrings that have been commonly used in the past had pierced holes in the earlobes, and earrings with various designs were attached to them. It has not been possible to attach earrings above the earlobe or elsewhere in the ear near the back of the head. In addition, depending on the shape and design of the earring mounting part (end), the existing piercing hole may not fit the earring mounting part into the hole. It has become difficult to meet the demands of the recent times.

In addition, recently, when there are more opportunities to wear a mask that covers the face, especially when going out, the lower part of the ear, that is, the area near the earlobe, is not only easily hidden by the mask or the string of the mask, but also makes it difficult to wear the mask. Therefore, there is a growing demand for improved fashionability by attaching ornaments such as earrings above the ears above the earlobe because there is not much decorative effect even if they are attached.

Therefore, these days, without having to pierce the ears, the front and back of the earring can be sandwiched between both ends of the earring and attached to the desired position above the ear (the position where the mask is not affected). Earrings that look like this have become popular.
To give an example, a first pad portion to be brought into contact with the surface of the ear at both ends of a connecting ring portion configured in a substantially U-shape so as to be able to hold the user's earlobe with synthetic resin, and a magnetic force opposing the back side of the ear. The earring can be attached to any position on the earlobe by providing a second pad portion to be brought into contact with the earlobe, and attaching a magnet portion to each of the two pad portions to attract each other by magnetic force. is known (see Utility Model Registration No. 3210329).

One ends of a pair of earring members are rotatably pivoted to each other by an eyelet member, and a ring is provided on the free-end-side opposing circumferential contact surfaces of the earring members to ensure rotation resistance of both earring members. An O-ring is interposed to form an opposing clamping surface for clamping the earlobe in the vicinity of the end of the earring member opposite to the position where the eyelet member is provided, and an ornamental body is provided on one or both of the earring members. (See Japanese Patent Application Laid-Open No. 2017-209301).

Further, it is composed of a first portion that straddles the earlobe via the second portion, and a lever, and a leaf spring is attached to the lever. There is also known a product that is less likely to deteriorate (see Utility Model Registration No. 3225270). A ring body 2a and a sphere 2b are provided at both ends of a part of the ring-shaped earring body to sandwich the earlobe, and a spring 3 for imparting elasticity to the earring body is attached to the earring body, so that the earlobe does not feel fatigued and is gentle. Earrings that can be attached are also known (see Utility Model Registration No. 3225308).

Utility Model Registration No. 3210329 JP 2017-209301 A Utility Model Registration No. 3225270 Utility Model Registration No. 3225308

However, in the earring described in Patent Document 1, a first pad portion that abuts on the front side of the ear is attached to both ends of a connecting ring portion that is formed in a substantially U-shape so as to be able to hold the user's earlobe with synthetic resin. 12 and a second pad portion 13 to be brought into contact with the back side of the ear, and magnetic portions 14 and 15 that attract each other by magnetic force are attached to both pad portions, respectively, so that the earring is attached to an arbitrary position of the ear. This has the advantage of fixing and holding the earring at an arbitrary position on the ear without the need for a piercing hole. In addition, it is necessary to attach two magnets that sandwich the ears, which increases the weight somewhat and increases the burden on the attachment part such as the earlobe, so it is not suitable for long-term wearing. There are some drawbacks such as not looking very good.

Also, the resin earrings described in Patent Document 2 have the advantage that they can be attached to any position on the ear such as the earlobe, but the opposing clamping surfaces attached to both free ends are slightly too large. There is a problem that appearance is not good. Furthermore, the earring described in Patent Document 3 has an urging portion 40 instead of a spring attached to the portion of the earring that sandwiches the earlobe, etc., so that the structure is a little large, and the earring has a decorative aspect. It's not very realistic.

In addition, in the earring described in Patent Document 4, a first free portion 1a having a spherical body 2b at one end and the first free portion 1a at both ends of an annular opening of the earring for attaching to an earlobe or the like, and the first free portion 1a A clasp 2 is formed which consists of a portion 1a and a first loose portion 1b having a ring 2a for receiving the portion 1a over the ear lobe. In this case, the structure of the clasp 2 itself is simple and it is thought that there is little risk of impairing the decorativeness. Since it is necessary to attach the spring 3, there are some problems in terms of workability and decorativeness, and there is also the drawback that the manufacturing cost is relatively high.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to improve the attachment of an ear cuff to the ear and to further improve the decorativeness of the ear cuff.

In other words, the present invention provides an ear cuff that improves conventional earrings and can be easily and stably attached to and detached from any part of the ear, and that can further improve decorativeness. Specifically, it is an annular ear cuff of a certain size that can be attached to each part of the ear, such as the earlobe, its upper part, and the back of the head, and the ear cuff is on the left and right of the annular body. The distance between the left and right side surfaces is shortened compared to the distance between the inner peripheral surface and the outer peripheral surface of the annular body by crushing both side surfaces with each other, and the left and right side surfaces are formed into flat and wide surfaces, and It is characterized in that a part of the body is cut off to form a slit for attachment to the ear.

The present invention also provides a ring-shaped ear cuff having a certain size to be attached to an ear, wherein the ear cuff presses and crushes the left and right side surfaces of the ring-shaped body in opposing directions to separate the inner and outer circumferences of the ring-shaped body. The distance between the left and right side ends is shorter than the distance between the left and right side ends, and the left and right side end faces are configured to be flat and wide. In addition, the flat and wide surfaces on the left and right sides are made bright to enhance the decorative effect.

Further, the present invention is a ring-shaped ear cuff having a certain size to be attached to an ear, wherein the ear cuff presses and crushes the left and right side surfaces of the ring-shaped body in opposite directions so as to hold the inner periphery of the ring-shaped body. By making the distance between the left and right side ends shorter than the distance between the outer peripheral surface and the left and right side surfaces of the annular body and pressing and crushing the left and right side surfaces of the annular body in mutually opposing directions, the above-described flat side surfaces of the annular body can be formed. A slit is formed by cutting a part of the annular body in the circumferential direction to form a slit, and the gap between both ends of the slit is widened around the vicinity of the slit. , and an ear cuff to which a spring force is applied in the asymmetrical direction (twisting direction of the annular body) at both ends of the slit.

Furthermore, the present invention comprises a first step of cutting a relatively thin wire at regular intervals and forming each cut into a ring shape by machining; a second step of molding the endless annular body into a flat shape; The present invention also relates to a method of manufacturing an ear cuff, comprising: a fourth step of forming a slit by cutting a part of the annular body having a flat and wide side surface (width side).

According to the ear cuff of the present invention, it can be easily and satisfactorily attached to and detached from any part of the ear, and the ear cuff itself has a flat and wide portion, so that it exhibits sufficient luster, making it an excellent accessory for other accessories. No need to attach. Furthermore, since the ear cuff itself has sufficient resilience (shape memory ability), it is easy and simple to put on and take off from the ear, is highly durable, and further enhances the decorative effect.

1 is a perspective view showing an example of an ear cuff according to the present invention; FIG. (a) Enlarged view showing a cross section of a filamentary body material used in the present invention. (b) A cross-sectional view of the ear cuff of the embodiment of the present invention in FIG. 1 taken along the line AA. FIG. 3 is a reference perspective view for explaining the spring function of the completed ear cuff related to the present invention. 1 is a perspective view showing an example of an annularly processed material used for manufacturing the ear cuff of the present invention. FIG. FIG. 2 is a perspective view of an endless annular body obtained by brazing integrally both end openings of the annular body material used in the present invention. FIG. 2 is a conceptual explanatory diagram showing an example of a case where left and right side portions of an endless ring-shaped material used in the present invention are pressure-rolled by a press machine to be plastically worked into a wide flat shape. FIG. 4 is a conceptual explanatory view showing another embodiment in which the right and left side portions of the endless annular body material used in the present invention are pressure-rolled by pressure rollers to be plastically worked into a wide flat shape.

An example of an implementation of an ear cuff and a method of manufacturing the same according to an embodiment of the present invention will be described below with reference to the drawings.
The ear cuff shown in FIG. 1 (hereinafter simply referred to as "Embodiment") represents an example of the completed state according to the present invention. It represents an annular body with flat wide portions formed on the left and right side surfaces.
The annular body 1 is formed by mechanically annularly forming a linear filamentary body made of, for example, stainless steel, piano wire, brass, or other metals in a first step. In this case, the annular body must be of a size that can be used as an ear cuff. There may be.

In the embodiment shown in FIG. 1, a linear filament is cut into a certain length (for example, 30 mm to 90 mm) and each cut is mechanically formed into a ring. A gap as shown in FIG. 4 is formed between 1d and 1e, and this gap forms a slit S that can be attached to and detached from the ear. In the state where the slit S is present, press working, which is the third step for flattening and widening the left and right side surfaces (width) by pressing the left and right side surfaces of the annular body in the subsequent step in the opposite direction, is performed. However, it is difficult to obtain sufficient springiness for the entire ring-shaped body 1, and the flattening and widening of the ring-shaped body 1 with respect to the left and right side surfaces in the circumferential direction is disturbed. Insufficient expression of brilliance on the side surface over substantially the entire peripheral surface.

Therefore, before performing the third step (pressurization), it is necessary to once connect both ends 1d and 1e of the annular body 1 in an endless manner as shown in FIG. 5 (second step). . As a connection method in this case, although it depends on the material of the annular body, it is generally convenient to apply brazing or laser processing. An endless metal material 1 processed into an annular shape is placed on a flat base (lower mold) R of a press machine, for example, as shown in FIG. After placing, the press upper mold P may be lowered to crush it. In this case, after the width side of the endless annular metal material 1 is placed on a flat base (lower die) R instead of the press die as shown in FIG. You may make it move and crush (3rd process).

As a result, the left and right side surfaces of the annular body 1 are pressurized, and the width sides 1b and 2 are widened and flattened by the amount that the left and right side surfaces 1b and 2 of the annular body 1 are crushed. The entire metal annular body 1 is plastically deformed and springiness is generated in the entire metal annular body 1 .
Next, for the endless annular body 1 in which the left and right side surfaces of the annular body 1 are deformed and the flat portions 1b and 2 are crushed, a slit S is formed to be attached to the earlobe or the upper part of the ear as an ear cuff. must be formed. For this purpose, a slit S is formed by cutting a portion of the ring of the endless annular body 1 crushed by a pressurizing device or the like (fourth step).

In this case, if the cut off slit S has sharp corners, it is easy to damage the ear cuff when attaching or detaching it to the earlobe or other parts of the ear. preferably In this case, with respect to both ends 1d and 1e of the separated slit S, sharp corners are removed by, for example, melting the corners so as to be rounded by laser processing, or applying an adhesive or resin material. When the ear is covered, the usability is improved without injuring the ear.

As for the material for forming the ring-shaped ear cuff E, as described above, for example, a filamentary body made of stainless steel, piano wire, brass, or other metals is generally used with a diameter of 10 mm on the inner peripheral side. It is used by mechanically forming it into an annular shape so as to form an annular body of about 60 mm. By pressurizing and deforming so that the entire side surface becomes flat in the circumferential direction, the cross section is crushed as shown in the enlarged cross-sectional view of FIG. 2(b). As a result, a latent spring force due to plastic deformation corresponding to the amount of pressing deformation is accumulated over the entire annular body 1 .

In order to complete the endless annular body having the latent spring force as the ear cuff E and use it so that it can be easily attached to and detached from the ear, a part of the endless annular body after being plastically deformed is cut to form a slit S in a part thereof. The slit S is maintained at a slightly narrower interval than the thickness of each part of the ear so that the interval can be easily attached to or detached from any part of the ear, including the earlobe, and as shown in FIG. In the slit S portion, in the longitudinal direction (circumferential direction) of the ring, the spring force in the opposite shape memory directions of arrow l1 direction and l2 direction is applied, and in the axial direction (central axis direction) of the ring body 1, has opposite torsional spring forces in the directions of arrows m1 and m2 (shape memory).

This makes it possible to easily improve the mounting force when the device is mounted on the ear by using both ends of the slit S, and the spring force of the slit S portion for mounting on the ear is hardly deteriorated. It is possible to obtain a simple and highly durable ear cuff E without the need to interpose an unattractive part such as a spring for maintaining and reinforcing the mountability as shown in FIG.

By adopting such a configuration, in the case of the embodiment shown in FIG. 3, when the ear is worn, both ends 1d and 1e of the slit S are pushed against the spring force (shape memory ability) provided in the ring-shaped body. One of them is directed in the m1 direction and the other is directed in the m2 direction, and the spring force of the annular body 1 is provided. When the S part is inserted into the part to be attached to the ear, and when the hand is released when the target position is reached, both ends 1d and 1e of the slit S are moved by the spring force (shape memory function) provided around the slit S part. Each returns to its original position and is fixed to a part of the pinched ear.

The ear cuff E attached to the ear has an increased light reflecting surface due to the wide flat surface portions 2 provided on both left and right sides of the ear cuff. Since the exposed area of the width (width) 1b·2 is increased, the reflective high brightness of the side surface (width) is increased, and an improvement in the decorative effect can be expected. In this case, another decorative material (for example, a chain decoration) can be passed through the ear cuff E, in which the light reflecting surfaces of the wide flat surface portions 1b and 2 are increased, to further increase the decorative effect.

In addition, the metal used in this case is not limited to a linear body having a general circular cross section such as the cross section (a) of FIG. The entire annular body 1 is pressed in the left and right side directions 1b and 2 directions against a filamentary body having a small cross-sectional plasticity difference, such as an ellipse or a substantially square shape, which is made into a ring to form a shape shown in FIG. 2(b). It is preferable to use an ear cuff having a cross-sectional shape with a wide flat surface with a plastic difference between the vertical and horizontal parts as shown.

The ear cuff E, which is formed in an annular shape as described above and has a spring property, is exposed to the distance (width) between the left and right sides with respect to the distance (thickness) between the inner and outer peripheral surfaces of the annular body 1. Since the area is increased, the light reflection luminance on the width surface is remarkably improved, and a large decorative effect can be expected. .
As described above, according to the ear cuff E and the method for manufacturing the same according to the present invention, it is possible to obtain an ear cuff that is easy and simple to wear on the ear, has excellent durability, and has a good appearance.

E ear cuff 1 annular body 1a outer peripheral surface 1b flat portion 1c inner peripheral surface 1d end portion 1e end portion 2 flat portion S slit

Claims (4)

Both the left and right ends of the annular body are pressurized to make the distance between the left and right ends shorter than the distance between the inner and outer peripheral surfaces of the annular body and to form a flat wide surface, and a part of the annular body in the circumferential direction is cut off. An ear cuff, characterized in that a slit is formed in the ear cuff. A slit is formed in a part of the annular body in the circumferential direction to stably hold and attach a part of the ear. An ear cuff characterized in that the distance (width) between the left and right side surfaces of the ring body is shortened and the left and right side parts of the annular body are pressed in opposite directions so as to make the ear cuff flat. A slit is formed in a part of the annular body in the circumferential direction to hold a part of the ear, and the distance between the left and right sides of the annular body is greater than the distance (thickness) between the inner and outer circumferences of the annular body. By pressurizing the left and right side portions of the annular body in opposite directions so that the (width) is short and wide, the flat side portions of the annular body are provided with a spring property due to plastic deformation. centered on the vicinity of the slit, a spring force (shape memory force) is applied in the direction of expanding the gap in the circumferential direction at both ends of the slit and in the asymmetric direction (twisting direction of the annular body) at both ends of the slit. Amazing ear cuffs. A first step of cutting a relatively thin wire-shaped material at regular intervals and forming each cut into an annular shape by machining, and joining both ends of the wire formed into an annular shape to form an endless annular shape. A second step and a third step of imparting springiness (shape memory ability) to the entire annular body by pressurizing the left and right side surfaces of the endless annular body in opposing directions to flatten and widen the side surfaces (width). and a fourth step of forming a slit by cutting a portion of the annular body having a flat and wide side surface (width side) in the circumferential direction.

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