Ear fittings

Abstract

This invention provides an ear device with a simpler structure than conventional devices that can achieve a relaxing effect by stimulating the parasympathetic nerves inside the ear. [Solution] The ear attachment 7 is molded from a stone mainly composed of silicon and includes a projection 8 for contacting the skin inside the ear and a gripping part 9 for gripping when worn. The gripping part 9 is formed as the base 10 and the projection 8 as the apex 11, forming a right cone shape.

Description

Technical Field

[0001] The present invention relates to an ear-mounted device.

Background Art

[0002] Conventionally, as an ear-mounted device that includes a heating body, is worn on a user's ear, and warms a predetermined part of the ear, thereby stimulating the parasympathetic nerve inside the ear by heating and obtaining a relaxation effect, the technique disclosed in Patent Document 1 is known.

[0003] The ear-mounted device disclosed in Patent Document 1 defines an accommodation space capable of accommodating a heating body. The partitioning surface that partitions the accommodation space includes a concave surface formed on the back side of the contact surface that contacts the auricle, a flange surface extending from the opening end of the concave surface, a predetermined part that is a part of the flange surface, and a flange opposing surface that is disposed to face the concave surface with a gap in the axial direction of the concave surface. A part of the heating body can be inserted between the predetermined part of the flange surface and the flange opposing surface from the inner side to the outer side in the radial direction of the concave surface. The predetermined part of the flange surface includes a part that is located on the outer side in the radial direction rather than the inner end in the radial direction and on the bottom side of the concave surface in the axial direction from the opening end of the concave surface.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, since the ear-mounted device disclosed in Patent Document 1 has a complicated structure, an ear-mounted device capable of obtaining a relaxation effect by stimulating the parasympathetic nerve inside the ear with a simpler structure than before has been desired.

[0006] This invention has been made in view of the above circumstances, and aims to provide an ear device that can achieve a relaxing effect by stimulating the parasympathetic nerves inside the ear with a simpler structure than conventional devices. [Means for solving the problem]

[0007] The present invention provides an ear device molded from a stone mainly composed of silicon, comprising a projection for contacting the skin inside a person's ear and a gripping portion for holding during wear.

[0008] According to the present invention as described above, the ear attachment, which is molded from a stone mainly composed of silicon, has a structure that is simpler than conventional ear attachments, as it includes a projection for contacting the skin inside the ear and a gripping part for holding when worn. Furthermore, since silicon-based stones vibrate one trillion times per second, when a projection on an earpiece molded from silicon-based stone comes into contact with the skin inside the ear, the earpiece vibrates one trillion times per second, providing beneficial stimulation to the vagus nerve, a type of parasympathetic nerve. As a result, according to the present invention, the vagus nerve is activated, the autonomic nervous system is regulated, and a relaxing effect can be obtained. Furthermore, according to the present invention, by obtaining the above-mentioned relaxation effect, tension in the neck, shoulders, and back is released, making it easier to move the joints. As a result, when stretching with the ear attachments attached to the ears, it becomes easier to perform movements such as looking up with the head, arching the back, and rotating one shoulder at a time to slide the shoulder blades inward. Furthermore, according to the present invention, it is possible to suppress cardiac function, contract bronchial smooth muscle, and promote gastrointestinal motility, as well as improve swallowing, vocalization, and articulation. As a result, it leads to stabilization of blood pressure, improvement of indigestion, and easier vocalization.

[0009] Furthermore, in this invention, the stone is obsidian.

[0010] According to the present invention as described above, since the stone used to shape the earpiece is obsidian, the extracted obsidian is shaped into a form that is easy to wear on a person's ear, resulting in a simpler structure than conventional designs. Furthermore, since obsidian's main component is silicon, approximately 70% to 80% is silicon. When an ear device made of obsidian comes into contact with the skin inside the ear, the ear device vibrates 1 trillion times per second, providing beneficial stimulation to the vagus nerve, a type of parasympathetic nerve. As a result, according to this invention, the vagus nerve is activated, the autonomic nervous system is regulated, and a relaxing effect can be obtained.

[0011] Furthermore, in the present invention, the gripping portion is formed as the base and the projection as the apex, forming a right circular cone shape.

[0012] As described above, the present invention is formed into a right-circular cone shape with the gripping portion as the base and the projection portion as the apex, resulting in a simpler structure than conventional designs. Furthermore, the projection portion side is easier to insert into the entrance of the external auditory canal, and the gripping portion side is easier to contact with a part of the auricle (for example, the antitragus), making it easier to attach the ear device to the ear. Furthermore, according to the present invention, since the ear device is formed in the shape described above, the protruding part at the apex can be more easily brought into contact with the skin on the inside of the ear. As a result, vibrations from the ear device are more easily transmitted to the vagus nerve, and the beneficial stimulation from the vibrations can be delivered to the vagus nerve more efficiently.

[0013] Furthermore, in the present invention, the conical surface of the stone, which is formed into the right circular cone shape, includes a spiral projection.

[0014] According to the present invention as described above, since the conical surface of the stone, which is shaped into a right cone, includes a spiral projection, when the projection side is inserted into the entrance of the external auditory canal, the spiral projection comes into contact with the skin on the inside of the ear, thereby stimulating the vagus nerve through the transmission of vibrations from the ear device, and also through the contact of the spiral projection itself. As a result, vibrations from the ear device are more easily transmitted to the vagus nerve, and the above-mentioned good stimulation can be delivered to the vagus nerve more efficiently.

[0015] Furthermore, in the present invention, the gripping portion is formed as the base and the projection as the apex, forming an oblique conical shape.

[0016] As described above, the present invention is formed into an oblique conical shape with the gripping portion as the base and the projection portion as the apex, resulting in a simpler structure than conventional designs. Furthermore, the projection portion side is easier to insert into the entrance of the external auditory canal, and the gripping portion side is easier to contact with a part of the auricle (for example, the antitragus), making it easier to attach the ear device to the ear. Furthermore, according to the present invention, since the ear device is formed in the shape described above, the protruding part at the apex can be more easily brought into contact with the skin on the inside of the ear. As a result, vibrations from the ear device are more easily transmitted to the vagus nerve, and the beneficial stimulation from the vibrations can be delivered to the vagus nerve more efficiently.

[0017] Furthermore, in the present invention, the projection is formed into a cylindrical shape and includes a through hole inside.

[0018] As described above, the present invention provides a simpler structure than conventional designs, as the projection is formed into a cylindrical shape and includes a through hole inside. Furthermore, the projection side is easier to insert into the entrance of the external auditory canal, and the gripping side is easier to contact with a part of the auricle (for example, the antitragus), making it easier to attach the ear device to the ear. In addition, according to the present invention, since it has a through-hole, ventilation is possible between the external auditory canal and the outside even when the ear-mounted device is worn on the ear. As a result, even when the ear-mounted device is worn on the ear, external sounds can be heard, so various operations can be performed while wearing the ear-mounted device on the ear. Also, while wearing the ear-mounted device on the ear, for example, it is also possible to stretch while listening to the voice of an instructor. In addition, according to the present invention, due to the through-hole, ventilation is possible between the external auditory canal and the outside even when the ear-mounted device is worn on the ear. Therefore, it is difficult for the inside of the external auditory canal to become stuffy, and it is possible to maintain the hygiene inside the external auditory canal.

Effects of the Invention

[0019] According to the present invention, there is an effect that a relaxation effect can be obtained by stimulating the parasympathetic nerve inside the ear with a simpler structure than before.

Brief Description of the Drawings

[0020] [Figure 1] It is a perspective view showing an ear-mounted device according to Embodiment 1 of the present invention. [Figure 2] It is a perspective view showing an ear-mounted device according to a modification of Embodiment 1. [Figure 3] It is a perspective view showing an ear-mounted device according to Embodiment 2 of the present invention. [Figure 4] It is a perspective view showing an ear-mounted device according to a modification of Embodiment 2. [Figure 5] It is a perspective view showing an ear-mounted device according to Embodiment 3 of the present invention. [Figure 6] It is a perspective view showing an ear-mounted device according to Embodiment 4 of the present invention. [Figure 7] It is a perspective view showing an ear-mounted device according to a modification of Embodiment 4. [Figure 8] It is a perspective view showing an ear-mounted device according to Embodiment 5 of the present invention. [Figure 9] It is a perspective view showing an ear-mounted device according to a modification of Embodiment 5. [Figure 10] It is a perspective view showing an elastic ring. [Figure 11] This is a perspective view showing the earpiece according to the present invention with an elastic ring attached. [Modes for carrying out the invention]

[0021] Hereinafter, an ear device according to an embodiment of the present invention will be described with reference to Figures 1 to 11.

[0022] (Embodiment 1) First, Embodiment 1 of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a perspective view showing an ear device according to Embodiment 1 of the present invention, and Figure 2 is a perspective view showing a modified ear device according to Embodiment 1.

[0023] <Overall configuration of the ear device according to Embodiment 1> First, the overall configuration of the ear device according to Embodiment 1 will be described. The ear device 1 according to this embodiment, shown in Figure 1, is an ear device molded from a stone mainly composed of silicon, and includes a projection 2 for contacting the skin inside the ear of a person (user) and a gripping part 3 for gripping when worn. The ear device 1 is provided in a pair, one for the left ear and one for the right ear.

[0024] The stone used to form the earpiece 1 according to this embodiment is obsidian. The main component of obsidian is silicon, which accounts for approximately 70% to 80% of the total. Stones with silicon as the main component, such as obsidian, have the property of vibrating one trillion times per second. Other components of obsidian include aluminum oxide, iron oxide, calcium oxide, sodium oxide, and potassium oxide.

[0025] The ear attachment 1 according to this embodiment is made by shaping the collected obsidian into a form that is easy to attach to a person's ear. Therefore, it has a simpler structure than conventional ear attachments.

[0026] <Modified ear device according to Embodiment 1> Next, a modified example of Embodiment 1 described above will be explained. The ear attachment according to the present invention may employ a modified version of Embodiment 1 as shown in Figure 2.

[0027] The modified earpiece 4 is an earpiece molded from obsidian, similar to earpiece 1 (see Figure 1), and includes a projection 5 and a gripping portion 6.

[0028] <Regarding the effects and benefits obtained by Embodiment 1> According to this embodiment, which has the above configuration, the ear attachments 1 and 4 are molded from a stone mainly composed of silicon and include projections 2 and 5 for contacting the skin inside the ear and gripping parts 3 and 6 for gripping when worn, thus having a simpler structure than conventional ear attachments. Furthermore, since silicon-based stones vibrate one trillion times per second, the protrusions 2 and 5 of the earpieces 1 and 4, which are molded from silicon-based stones, come into contact with the skin inside the ear. The vibration of the earpieces 1 and 4 one trillion times per second provides beneficial stimulation to the vagus nerve, a type of parasympathetic nerve. As a result, according to this embodiment, the vagus nerve is activated, the autonomic nervous system is regulated, and a relaxing effect can be obtained. Furthermore, according to this embodiment, by obtaining the above-mentioned relaxation effect, tension in the neck, shoulders, and back is released, making it easier to move the joints. As a result, when stretching with the ear attachments 1 and 4 attached to the ears, it becomes easier to perform movements such as looking up with the neck, arching the back, and rotating one shoulder at a time to slide the shoulder blades inward. Furthermore, this embodiment makes it possible to suppress cardiac function, contract bronchial smooth muscle, and promote gastrointestinal motility, as well as improve swallowing, vocalization, and articulation. As a result, it leads to stabilization of blood pressure, improvement of indigestion, and easier vocalization.

[0029] Furthermore, according to this embodiment, since the stone used to form the ear attachments 1 and 4 is obsidian, the extracted obsidian is shaped into a form that is easy to attach to a person's ear, resulting in a simpler structure than conventional designs. Furthermore, since obsidian's main component is silicon, approximately 70% to 80% is silicon. When the ear attachments 1 and 4, made of obsidian, come into contact with the skin inside the ear, they vibrate 1 trillion times per second, providing beneficial stimulation to the vagus nerve, a type of parasympathetic nerve. As a result, according to this embodiment, the vagus nerve is activated, the autonomic nervous system is regulated, and a relaxing effect can be obtained.

[0030] Based on the above, this embodiment provides the effect of achieving a relaxing effect by stimulating the parasympathetic nerves inside the ear with a simpler structure than conventional methods.

[0031] (Embodiment 2) In addition to Embodiment 1 described above, the ear device according to the present invention may also employ Embodiment 2 described below. Hereinafter, Embodiment 2 of the ear device according to the present invention will be described with reference to Figures 3 and 4.

[0032] Figure 3 is a perspective view showing an ear device according to Embodiment 2 of the present invention, and Figure 4 is a perspective view showing a modified ear device according to Embodiment 2.

[0033] <Overall configuration of the ear device according to Embodiment 2> First, the overall configuration of the ear device according to Embodiment 2 will be described. The ear device 7 according to this embodiment, shown in Figure 3, is an ear device molded from a stone mainly composed of silicon, and includes a projection 8 for contacting the skin inside the ear of a person (user) and a gripping part 9 for gripping when worn. The ear device 7 is provided in a pair, one for the left ear and one for the right ear.

[0034] The stone used to form the earpiece 7 according to this embodiment is obsidian, the same as that used for earpiece 1 (see Figure 1).

[0035] The earpiece 7 is molded into a right-circular cone shape with the gripping portion 9 as the base surface 10 and the projection portion 8 as the apex 11. The gripping portion 9 (base surface 10) is formed in a flat shape. The projection portion 8 is formed to taper from the base surface 10 to the apex 11, and the conical surface 12, which is the outer surface of the projection portion 8, is formed in a curved shape that bulges outwards.

[0036] <Modified version of the ear device according to Embodiment 2> Next, a modified example of Embodiment 2 described above will be explained. The ear attachment according to the present invention may employ a modified version of Embodiment 2 as shown in Figure 4.

[0037] The modified ear attachment 13 is an ear attachment molded from obsidian, similar to the ear attachment 7 (see Figure 3), and includes a projection 14 and a gripping portion 15.

[0038] The ear attachment 13 is molded into a right cone shape with the gripping portion 15 as the base surface 16 and the projection portion 14 as the apex 17. Unlike the cone surface 12 of the ear attachment 7 (see Figure 3), the conical surface 18 of the projection portion 8 of the ear attachment 13 is formed to gradually taper from the base surface 16 to the apex 17.

[0039] <Regarding the effects and benefits obtained by Embodiment 2> This embodiment, having the above configuration, produces the same effects as in Embodiment 1, as well as the following effects.

[0040] In other words, according to this embodiment, the gripping parts 9 and 15 are formed into a right cone shape with the base surfaces 10 and 16 and the projections 8 and 14 as the vertices 11 and 17. This provides a simpler structure than conventional designs, and the projections 8 and 14 side is easier to insert into the entrance of the ear canal, while the gripping parts 9 and 15 side is easier to contact with a part of the auricle (for example, the antitragus), making it easier to attach the ear fittings 7 and 13 to the ear. Furthermore, according to this embodiment, since the ear attachments 7 and 13 are formed in the above shape, the protruding parts 8 and 14, which are at the apex, can be more easily brought into contact with the skin on the inside of the ear. As a result, the vibrations of the ear attachments 7 and 13 are more easily transmitted to the vagus nerve, and the good stimulation from the above vibrations can be delivered to the vagus nerve more efficiently.

[0041] Based on the above, this embodiment provides the same effects as the first embodiment.

[0042] (Embodiment 3) In addition to embodiments 1 and 2 described above, the ear device according to the present invention may also employ the following embodiment 3. Hereinafter, embodiment 3 of the ear device according to the present invention will be described with reference to Figure 5.

[0043] Figure 5 is a perspective view showing an ear device according to Embodiment 3 of the present invention.

[0044] <Overall configuration of the ear device according to Embodiment 3> First, the overall configuration of the ear device according to Embodiment 3 will be described. The ear device 19 according to this embodiment, shown in Figure 5, is an ear device molded from a stone mainly composed of silicon, and includes a projection 20 for contacting the skin inside the ear of a person (user) and a gripping part 21 for gripping when wearing. The ear device 19 is provided in a pair, one for the left ear and one for the right ear.

[0045] The stone used to form the earpiece 19 according to this embodiment is obsidian, the same as that used for earpiece 1 (see Figure 1).

[0046] The ear attachment 19 is molded into a right-circular cone shape with the gripping portion 21 as the base surface 22 and the projection portion 20 as the apex 23. The gripping portion 21 (base surface 22) is formed in a flat shape. The projection portion 20 is formed to taper from the base surface 22 to the apex 23, and the conical surface 24 of the projection portion 20 is formed in a curved shape that bulges outwards.

[0047] As described above, the earpiece 19 includes a spiral projection 25 on the conical surface 24 of a stone that is shaped into a right cone. The projection 25 is formed spirally on the conical surface 24, extending from the base 22 to the apex 23.

[0048] <Regarding the effects and benefits obtained by Embodiment 3> This embodiment, having the above configuration, produces the same effects as in Embodiment 1, as well as the following effects.

[0049] In other words, according to this embodiment, since the conical surface 24 of the stone, which is shaped into a right cone, includes a spiral projection 25, when the projection 20 side is inserted into the entrance of the external auditory canal, the spiral projection 25 comes into contact with the skin on the inside of the ear, thereby stimulating the vagus nerve through the transmission of vibrations from the ear device 19, and also effectively stimulating the vagus nerve through contact with the spiral projection 25. As a result, the vibrations of the ear device 19 are more easily transmitted to the vagus nerve, and the effective stimulation from the vibrations can be delivered to the vagus nerve more efficiently.

[0050] Based on the above, this embodiment provides the same effects as the first embodiment.

[0051] (Embodiment 4) In addition to embodiments 1 to 3 described above, the ear device according to the present invention may also employ the following embodiment 4. Hereinafter, embodiment 2 of the ear device according to the present invention will be described with reference to Figures 6 and 7.

[0052] Figure 6 is a perspective view showing an ear device according to Embodiment 4 of the present invention, and Figure 7 is a perspective view showing a modified ear device according to Embodiment 4.

[0053] <Overall configuration of the ear device according to Embodiment 4> First, the overall configuration of the ear device according to Embodiment 4 will be described. The ear device 26 according to this embodiment, shown in Figure 6, is an ear device molded from a silicon-based stone and includes a projection 27 for contacting the skin inside the ear of a person (user) and a gripping portion 28 for gripping when worn. The ear device 26 is provided in a pair, one for the left ear and one for the right ear.

[0054] The stone used to form the earpiece 26 according to this embodiment is obsidian, the same as that used for earpiece 1 (see Figure 1).

[0055] The earpiece 26 is molded into an oblique conical shape with a gripping portion 28 as the base surface 29 and a projection 27 as the apex 30. The gripping portion 28 (base surface 29) is formed in a flat shape. The projection 27 is formed to taper from the base surface 29 to the apex 30, and the conical surface 31 of the projection 27 is formed in a curved shape that bulges outward.

[0056] <Modified ear device according to Embodiment 4> Next, a modified example of Embodiment 4 described above will be explained. The ear attachment according to the present invention may employ a modified version of Embodiment 4 as shown in Figure 7.

[0057] The modified ear attachment 32 is an ear attachment molded from obsidian, similar to the ear attachment 26 (see Figure 6), and includes a projection 33 and a gripping portion 34.

[0058] The ear attachment 32 is molded into an oblique conical shape with the gripping portion 34 as the base surface 35 and the projection portion 33 as the apex 36. Unlike the conical surface 31 of the ear attachment 32 (see Figure 6), the conical surface 37 of the projection portion 33 of the ear attachment 32 is formed to gradually taper from the base surface 35 to the apex 36.

[0059] <Regarding the effects and benefits obtained by Embodiment 4> This embodiment, having the above configuration, produces the same effects as in Embodiment 1, as well as the following effects.

[0060] In other words, according to this embodiment, the gripping portions 28 and 34 are formed into a slanted conical shape with the base surfaces 29 and 35 and the projections 27 and 33 as the vertices 30 and 36. This provides a simpler structure than conventional designs, and the projections 27 and 33 are easier to insert into the entrance of the ear canal, while the gripping portions 28 and 34 are easier to contact with a part of the auricle (for example, the antitragus), making it easier to attach the ear attachments 26 and 32 to the ear. Furthermore, according to this embodiment, since the ear attachments 26 and 32 are formed in the shape described above, the protrusions 27 and 33 on the apex side 30 and 36 can be easily brought into contact with the skin on the inside of the ear. As a result, vibrations from the ear attachments 26 and 32 are more easily transmitted to the vagus nerve, making it possible to more efficiently deliver the beneficial stimulation from the vibrations to the vagus nerve.

[0061] Based on the above, this embodiment provides the same effects as the first embodiment.

[0062] (Embodiment 5) In addition to embodiments 1 to 4 described above, the ear device according to the present invention may also employ the following embodiment 5. Hereinafter, embodiment 5 of the ear device according to the present invention will be described with reference to Figures 8 and 9.

[0063] Figure 8 is a perspective view showing an ear device according to Embodiment 5 of the present invention, and Figure 9 is a perspective view showing a modified ear device according to Embodiment 5.

[0064] <Overall configuration of the ear device according to Embodiment 5> First, the overall configuration of the ear device according to Embodiment 5 will be described. The ear device 38 according to this embodiment, shown in Figure 8, is an ear device molded from a stone mainly composed of silicon, and includes a projection 39 for contacting the skin inside the ear of a person (user) and a gripping part 40 for gripping when worn. The ear device 38 is provided in a pair, one for the left ear and one for the right ear.

[0065] The stone used to form the earpiece 38 according to this embodiment is obsidian, the same as that used for earpiece 1 (see Figure 1).

[0066] The earpiece 38 is molded into a right-circular cone shape with the gripping portion 40 as the base surface 41 and the projection portion 39 as the apex 42. The gripping portion 40 (base surface 41) is formed in a flat shape. The projection portion 39 is formed to taper from the base surface 41 to the apex 42, and the conical surface 43 of the projection portion 39 is formed in a curved shape that bulges outwards.

[0067] The projection 39 is formed into a cylindrical shape and includes a through hole 44 inside. The through hole 44 is formed to penetrate the earpiece 38 along its axial direction, from the bottom surface 41 to the top surface 42.

[0068] <Modified ear device according to Embodiment 5> Next, a modified example of Embodiment 5 described above will be explained. The ear attachment according to the present invention may employ a modified version of Embodiment 5 as shown in Figure 9.

[0069] The modified earpiece 45 is an earpiece molded from obsidian, similar to the earpiece 7 (see Figure 3), and includes a projection 46 and a gripping portion 47.

[0070] The earpiece 45 is molded into a cylindrical shape with the gripping portion 47 as the base surface 48 and the projection portion 46 as the top surface 49. The projection portion 46 is molded into a cylindrical shape and includes a through hole 50 inside. The through hole 50 is formed to penetrate the earpiece 45 along the axial direction from the base surface 48 to the top surface 49.

[0071] <Regarding the effects and benefits obtained by Embodiment 5> This embodiment, having the above configuration, produces the same effects as in Embodiment 1, as well as the following effects.

[0072] In other words, according to this embodiment, the projections 39 and 46 are formed into a cylindrical shape and include through holes 44 and 50 inside, resulting in a simpler structure than conventional designs. Furthermore, the projections 39 and 46 are easier to insert into the entrance of the ear canal, and the gripping parts 40 and 47 are easier to contact with a part of the auricle (for example, the antitragus), making it easier to attach the ear attachments 38 and 45 to the ear. Furthermore, according to this embodiment, since the earpieces 38 and 45 have through holes 44 and 50, ventilation is possible between the ear canal and the outside even when the earpieces 38 and 45 are worn on the ears. As a result, external sounds can be heard even when the earpieces 38 and 45 are worn on the ears, making it possible to perform various tasks while wearing the earpieces 38 and 45, and also making it possible to do stretches, for example, while listening to an instructor's voice, while wearing the earpieces 38 and 45. Furthermore, according to this embodiment, the through holes 44 and 50 allow for ventilation between the ear canal and the outside even when the ear fittings 38 and 45 are worn on the ear, thus preventing the inside of the ear canal from becoming stuffy and making it possible to maintain hygiene inside the ear canal.

[0073] Based on the above, this embodiment provides the same effects as the first embodiment.

[0074] The configurations described in each of the above embodiments can be modified as appropriate within the scope of the present invention, and the invention is not limited to the configurations of each of the above embodiments.

[0075] <Elastic ring> For example, the ear attachments 1, 4, 7, 13, 19, 26, 32, 38, and 45 (see Figures 1 to 9) may have the elastic rings 51 shown in Figures 10 and 11 attached to the outer surface of the gripping portions 3, 6, 9, 15, 21, 28, 34, 40, and 47 (Figure 11 shows, as an example, the elastic rings 51 attached to the conical surface 12 on the gripping portion 9 side of ear attachment 7).

[0076] The elastic ring 51 is formed of an elastic resin (e.g., rubber) and is formed in an annular shape. The inner diameter of the elastic ring 51 is formed to be of a size that can be attached to the outer surface of the gripping portions 3, 6, 9, 15, 21, 28, 34, 40, 47 of the ear fittings 1, 4, 7, 13, 19, 26, 32, 38, 45.

[0077] By attaching the above elastic ring 51 to the outer surface of the gripping portions 3, 6, 9, 15, 21, 28, 34, 40, 47 of the ear fittings 1, 4, 7, 13, 19, 26, 32, 38, 45, in addition to achieving the same effects as in Embodiment 1, the friction of the elastic ring 51 makes it easier to maintain the attachment state inside the ear. As a result, it is possible to perform various operations while the ear fittings 1, 4, 7, 13, 19, 26, 32, 38, 45 are attached to the ear, and it is also possible to perform exercises such as stretching while the ear fittings 1, 4, 7, 13, 19, 26, 32, 38, 45 are attached to the ear.

[0078] <Spiral protrusion> Also, the spiral protrusion 25 shown in FIG. 5 may be adopted in other embodiments, such as the conical surface 31 (see FIG. 6) of the ear fitting 26, the conical surface 37 (see FIG. 7) of the ear fitting 32, or the conical surface 43 (see FIG. 8) of the ear fitting 38.

[0079] <Through hole> Also, the through hole 44 shown in FIG. 8 may be adopted in other embodiments, such as the conical surface 18 (see FIG. 4) of the ear fitting 13, the conical surface 31 (see FIG. 6) of the ear fitting 26, or the conical surface 37 (see FIG. 7) of the ear fitting 32.

Description of reference numerals

[0080] 1, 4, 7, 13, 19, 26, 32, 38, 45... Ear fittings 2, 5, 8, 14, 20, 27, 33, 39, 46... Protrusion portions 3, 6, 9, 15, 21, 28, 34, 40, 47... Gripping portions 10, 16, 22, 29, 35, 41, 48... Bottom surfaces 11, 17, 23, 30, 36, 42... Vertices 12, 18, 24, 31, 37, 43... conical surfaces 25…Spiral protrusions 44, 50... Through holes 49…Top surface 51…Elastic ring

Claims

1. An earpiece molded from a stone whose main component is silicon, A projection for contacting the skin inside a person's ear, Includes a gripping portion for holding during attachment, Ear fittings.

2. The aforementioned stone is obsidian. The ear attachment according to claim 1.

3. The gripping portion is formed as the base and the projection as the apex, forming a right circular cone shape. The ear attachment according to claim 1.

4. The conical surface of the stone, which is shaped into a right circular cone, includes a spiral projection. The ear attachment according to claim 3.

5. The gripping portion is formed as the base and the projection as the apex, The ear attachment according to claim 1.

6. The aforementioned projection is formed into a cylindrical shape and includes a through hole inside. The ear attachment according to claim 1.

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