Earphone

Abstract

To provide an earphone adopting a sound transmission system via a cartilage with excellent articulation without deteriorating a voice frequency band by improving the transmission efficiency of vibration in a state that an ear hole is open so as to provide a sufficient sound pressure.SOLUTION: An earphone (1) is provided with an earphone body (2) including a vibrating unit having a vibrator (23) for generating vibration, a vibrating plate (24) for holding the vibrator and vibrating due to the vibration generated by the vibrator, and a vibration transmission section (25) provided to the vibrating plate, a case (22) for containing at least the vibrating unit, and a vibration-proof material (51) for supporting the vibrating unit and preventing the vibration generated by the vibrator from being transmitted to the case, and a vibrating body (31) having a tip section (33) extending in one axial direction (- Z-axis direction), an inclined surface (35) connected to the base end of the tip section and inclined with respect to the one axial direction, an annular base section (34) expanding in the directions (X-axis direction and Y-axis direction) orthogonal to the one axial direction, and a vibration receiving section (32) to which the vibration is transmitted from the vibration transmission section and which is in contact with the ear cartilage and transmits the vibration to the contact portion of the ear cartilage.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to earphones, and more particularly to earphones that use cartilage conduction, which has a sound transmission path via cartilage. [Background technology]

[0002] Earphones that transmit sound information to the inner ear, the human hearing organ, are classified into air conduction and bone conduction types, differing in the vibrating body that forms the sound generating unit (speaker).Air conduction receivers are widely used and are designed to transmit sound information to the inner ear via air conduction by placing the earphone at the entrance of the ear canal and through the middle ear acoustic system, including the ear canal and eardrum.However, there are problems with the sound emitted by the earphone leaking to the surrounding area and the inability to hear external sounds if the ear is blocked.

[0003] In contrast, bone conduction earphones are designed to transmit audio information directly to the inner ear via bone tissue, bypassing the middle ear acoustic system, by pressing a vibrator against the skin above the mastoid process behind the ear, the mandible, etc. Most bone conduction earphones are designed so that the main body is pressed against the mastoid process behind the outer ear or near the sideburns with a certain amount of pressure, transmitting acoustic vibrations generated by the bone conduction speaker in the main body to the inner ear.

[0004] As an example of a bone conduction earphone, Patent Document 1 discloses a bone conduction headset with a structure in which a bone conduction speaker is placed at a location other than the entrance of the ear canal, allowing audio information to be heard through bone conduction while keeping the ear canal open. Patent Document 2 also discloses an earphone with a structure in which the vibration surface of the bone conduction speaker is formed to abut against the auricle.

[0005] However, bone conduction earphones do not block the ears, so although external sounds can be heard, the vibrations from the left and right vibrators mix in the skull, impairing the stereo effect. Also, large vibrations are required to vibrate the skull, making it difficult to completely prevent sound leakage to the surroundings.

[0006] In contrast, Patent Document 3 discloses earphones that use cartilage conduction, characterized by having a vibration transmission unit that fits into the cavity of the concha and contacts the ear cartilage when the ear canal is open to transmit vibrations to the contacting part of the ear cartilage, a vibration source for the vibration transmission unit, and a movable earplug unit that opens and closes the ear canal when the vibration transmission unit is fitted into the cavity of the concha.With cartilage conduction earphones, the left and right ear cartilages vibrate independently, so the stereo effect is not impaired. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-18683 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-320790 [Patent Document 3] Patent No. 6590266 Summary of the Invention [Problem to be solved by the invention]

[0008] The earphones disclosed in Patent Document 3 are earphones that transmit sound via cartilage, with a diaphragm and vibration element integrated into a spherical case / diaphragm with a diameter of 11 mm, as shown in Figure 1. Furthermore, as shown in Figure 2, when the spherical earphones are placed in the ear, the entrance to the ear canal is not completely blocked but remains open. Therefore, the density of sound waves generated in the ear canal by cartilage conduction vibrations decreases, lowering the mid-low frequency range and weakening the human voice band (100 Hz to 1000 Hz), resulting in reduced clarity.

[0009] Furthermore, the earphones that transmit sound via cartilage disclosed in Patent Document 3 are spherical with a fixed diameter of 11 mm, making them difficult for people with large ears to wear and prone to falling off when running. Meanwhile, people with small ears are more likely to feel a sense of pressure. Furthermore, the spherical shape of the earphones disclosed in Patent Document 3 means that the contact area between the diaphragm and cartilage conduction is small, resulting in poor vibration transmission efficiency and difficulty in increasing sound pressure.

[0010] The object of this invention is to provide earphones that transmit sound via cartilage, which improve the efficiency of vibration transmission when the ear canal is open, produce sufficient sound pressure, and provide good clarity without reducing the vocal range. It is also an object of this invention to provide earphones that transmit sound via cartilage, which provide a comfortable fit for people with both small and large ears, and which do not easily fall off even when running. [Means for solving the problem]

[0011] The earphone according to the present invention comprises: an earphone body including a vibration unit having a vibrator that generates vibrations, a diaphragm that holds the vibrator and vibrates due to the vibrations generated by the vibrator, and a vibration transmission part provided on the diaphragm; a housing that houses at least the vibration unit; and a vibration-proof material that supports the vibration unit and prevents the vibrations generated by the vibrator from being transmitted to the housing; The earphone is characterized by comprising a vibrator that contacts the ear cartilage and transmits vibrations to the contact portion of the ear cartilage, the vibrator having a tip portion that extends in one axial direction, an inclined surface that is connected to the base end of the tip portion and is inclined with respect to the one axial direction, a circular base portion that extends in a direction perpendicular to the one axial direction, and a vibration receiving portion to which vibrations are transmitted from the vibration transmitting portion.

[0012] Moreover, the earphone according to the present invention is an earphone body including a vibration unit having a vibrator that generates vibrations, a diaphragm that holds the vibrator and vibrates due to vibrations, and a vibration transmission part provided on the diaphragm; a housing that houses at least the vibration unit; and a vibration-proof material that supports the vibration unit and prevents the vibrations generated by the vibrator from being transmitted to the housing; a vibrator that contacts the ear cartilage and transmits vibrations to the contact portion of the ear cartilage, the vibrator having a tip portion that extends in one axial direction, an inclined surface that is connected to the base end of the tip portion and is inclined with respect to the one axial direction, an annular base portion that extends in a direction perpendicular to the one axial direction, and a vibration receiving portion to which vibrations are transmitted from the vibration transmitting portion; The vibration transmitting unit and the vibration receiving unit are each made up of a substantially spherical portion at the tip of one end and a bearing portion corresponding to the substantially spherical portion at the other end, and are rotatably connected to each other in this earphone.

[0013] Moreover, the earphone according to the present invention is an earphone body including a vibration unit having a vibrator that generates vibrations, a diaphragm that holds the vibrator and vibrates due to vibrations, and a vibration transmission part provided on the diaphragm; a housing that houses at least the vibration unit; and a vibration-proof material that supports the vibration unit and prevents the vibrations generated by the vibrator from being transmitted to the housing; a vibrator that contacts ear cartilage and transmits vibrations to a contacting portion of the ear cartilage, the vibrator having a tip portion extending in one axial direction, an inclined surface connected to the base end of the tip portion and inclined relative to the axial direction, an annular base portion extending in a direction perpendicular to the axial direction, an upper end surface connected to one end of the base portion opposite the tip portion, and a vibration receiving portion provided on the outer surface of the upper end surface to which vibrations are transmitted from the vibration transmitting portion; The vibration transmitting unit and the vibration receiving unit are earphones characterized in that one of them has an approximately spherical portion at the tip and the other has a bearing portion corresponding to the approximately spherical portion, and are rotatably connected.

[0014] The earphones of the present invention can improve the efficiency of vibration transmission and generate sufficient sound pressure even when the ear canal is open, and can provide earphones that transmit sound via cartilage with good clarity without reducing the vocal range.

[0015] The earphone according to the present invention is characterized in that the vibration transmitting unit and the vibration receiving unit are detachably connected.

[0016] With the earphones according to the present invention, it is possible to provide earphones that can easily replace the vibrating body, can provide a comfortable fit for people with ears both small and large, and transmit sound via cartilage so that they do not easily come off even when running.

[0017] The earphone according to the present invention comprises: The earphone further comprises a ring body that is removably fitted onto the outside of the base end.

[0018] The earphones according to the present invention can be worn securely and stably in the ears even when wearing the earphones while exercising or for long periods of time.

[0019] The ring body of the earphone according to the present invention is an earphone characterized by being made of an elastic body.

[0020] If the ring body of the earphone according to the present invention is made of an elastic material, it can be more reliably and stably fitted to the ear.

[0021] The vibration-proof material for earphones according to the present invention is characterized in that the hardness is 5 or more and 30 or less.

[0022] With the vibration-proof material for earphones according to the present invention, the vibration unit can be reliably supported within the housing without transmitting vibrations generated by the vibration unit to the housing or the like.

[0023] The earphone according to the present invention is characterized in that the inclined surface of the vibrating body is inclined at an angle of 25 to 35 degrees with respect to the perpendicular direction and is formed in a concave shape.

[0024] With the earphones of the present invention, the vibrating body comes into contact with the ear cartilage over a wide area, efficiently transmitting vibrations to generate sufficient sound pressure, and it is possible to provide earphones that use a cartilage-based sound transmission method that provides good clarity without reducing the vocal range. [Effects of the Invention]

[0025] The earphones of the present invention can provide earphones that transmit sound via cartilage, improving vibration transmission efficiency to generate sufficient sound pressure when the ear canal is open, and providing good clarity without reducing the vocal range.In addition, earphones that transmit sound via cartilage can be provided that provide a comfortable fit for people with ears both small and large, and that do not easily fall off even when running. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is an external view of an earphone according to the prior art. [Figure 2] FIG. 2 is a schematic cross-sectional view of an earphone according to the prior art. [Figure 3] FIG. 3 is an external view of the earphone according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a schematic cross-sectional view of the earphone according to the first embodiment of the present invention. [Figure 5] FIG. 5 is a schematic cross-sectional view of a cross section including an ear canal in a state where the vibrating body of the earphone according to the first embodiment of the present invention is worn in the ear. [Figure 6] FIG. 6 is an external view of an earphone according to the second embodiment of the present invention. [Figure 7] FIG. 7 is a plan view of an earphone according to a second embodiment of the present invention. [Figure 8] FIG. 8 is a perspective view showing the external appearance of an earphone according to the second embodiment of the present invention. [Figure 9] FIG. 9 is a schematic cross-sectional view of an earphone according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] A first embodiment of the present invention will be described below.

[0028] FIG. 3 shows an external view of the earphone 1 according to the first embodiment of the present invention. (A) is a plan view, and (B) is a front view. FIG. 4 is a schematic cross-sectional view taken along line AA in FIG. 3(A) showing the internal configuration of the earphone 1. FIG. 4(A) shows the earphone main body 2 and vibrating body 31 combined, while FIG. 4(B) shows the earphone main body 2 and vibrating body 31 separated. Note that the axial direction of the tip end 33 perpendicular to the base end 34 is the Z-axis direction, and the directions perpendicular to the Z-axis in the plane that defines the base end 34 and that are orthogonal to each other are the X-axis and Y-axis directions.

[0029] The earphone 1 includes an earphone main body 2 and a vibrating body 31.

[0030] The earphone main body 2 includes a microphone 3, a power supply unit 4, a vibration unit 21, a housing 22, a vibration-isolating material 51, and a control board (not shown).

[0031] Housing 22 houses microphone 3, power supply unit 4, vibration unit 21, vibration-isolating material 51, and a control board. Vibration unit 21 is composed of vibrator 23 that generates vibrations in accordance with an electrical signal converted from the sound collected by microphone 3, diaphragm 24 that holds vibrator 23 and vibrates in response to the vibrations generated by vibrator 23, and vibration transmission section 25 provided on diaphragm 24. Vibrator 23 may be any element that generates vibrations in accordance with the electrical signal converted from the sound collected by microphone 3, and may be, for example, a voice coil, a piezoelectric element, or the like.

[0032] Diaphragm 24 holds vibrator 23 by adhering closely to the side surfaces (X-axis direction and Y-axis direction) and bottom surface (-Z-axis direction) of vibrator 23. In addition, columnar vibration transmission part 25 extending in the -Z-axis direction is provided on the bottom surface (-Z-axis direction) of vibrating plate 24. Diaphragm 24 may be made of a material that can efficiently transmit vibrations generated by vibrator 23, such as metal. Diaphragm 24 is preferably made of an aluminum alloy, which is also easy to process.

[0033] The vibration unit 21 is held by the housing 22 and a support plate disposed within the housing 22 via a vibration-isolating material 51. The vibration-isolating material 51 is a ring-shaped elastic body. The vibration-isolating material 51 is disposed between the vibration unit 21, the housing 22, and the support plate, and absorbs vibrations generated by the vibration unit 21 and prevents the vibrations from being transmitted to the housing 22 and other components disposed within the housing 22. If the vibrations are transmitted to the housing 22, sound leakage occurs. Furthermore, if the vibrations are transmitted to the microphone 3 disposed within the housing 22, feedback occurs. Generally, the speaker (the source of vibration) and the microphone 3 are separated and connected by a cable or communicate wirelessly to prevent the vibrations generated by the speaker from being transmitted to the microphone 3. However, with the earphone 1 according to the present invention, there is no risk of feedback occurring even if the vibration unit 21 and the microphone 3 are disposed close to each other within the same housing 22.

[0034] The hardness of the vibration-isolating material 51 is preferably 5 or more and 30 or less, and more preferably 10 or more and 20 or less. If the hardness is less than 5, it is difficult to securely hold the vibration unit 21, and if the hardness exceeds 30, the vibration of the vibration unit 21 is transmitted to the housing 22, etc., which is undesirable and can cause feedback, etc. If the hardness is 10 or more and 20 or less, even if the thickness of the vibration-isolating material 51 is 2 mm, it is possible to securely hold the vibration unit 21 and prevent the transmission of vibration. This makes it possible to make the earphone body 2 more compact, which is more preferable. Note that the hardness here is the hardness (measured value) measured using a durometer type E hardness tester.

[0035] The vibration-proof material 51 may be made of any material having a hardness of 5 or more and 30 or less, such as a gel-like material whose main ingredient is silicon, a gel-like material whose main ingredient is polyurethane, etc. Furthermore, if the vibration-proof material 51 has adhesive applied to both sides, for example, double-sided adhesive tape, it is preferable because this makes it possible to easily fix the vibration unit 21 inside the housing 22.

[0036] The vibrating body 31 has a tip portion 33 that extends in one axial direction (-Z axis direction), an inclined surface 35 that is connected to the base end of the tip portion 33 and is inclined with respect to the one axial direction, an annular base end portion 34 that extends in directions (X axis direction and Y axis direction) perpendicular to the one axial direction, and a vibration receiving portion 32 to which vibrations are transmitted from the vibration transmitting portion 25, and comes into contact with the ear cartilage 110 to transmit vibrations to the contact portion of the ear cartilage 110. The ear cartilage 110 vibrates and acts as a speaker, generating sound waves in the ear canal 104.

[0037] The vibrating body 31 has an inclined surface 35 on its outer surface that is inclined with respect to the Z-axis direction (or the X-axis direction that is perpendicular thereto), and via this, the base end portion 34 is formed into an eccentric truncated cone shape that bulges from the base end of the tip portion 33 to the -X side and bulges slightly to the +X side, and has an annular base end portion 34 that unfolds on the XY plane. This allows the base end portion 34 to be placed within the auditory canal 106 without interfering with the tragus 103.

[0038] 5 is a schematic cross-sectional view including the ear canal 104 when the vibrating body 31 of the earphone 1 is worn in the ear 101. The earphone main body 2 is not shown in the drawing.

[0039] The distal end portion 33 is a hollow, generally elliptical columnar body located eccentrically in the -X-axis direction relative to the proximal end portion 34. The side of the distal end portion 33 facing the inclined surface 35 is inclined at an angle φ of, for example, 25 to 35 degrees, preferably approximately 30 degrees, relative to the Z-axis direction, and the inclined surface 35 is inclined at an angle θ of, for example, 25 to 35 degrees, preferably approximately 30 degrees, relative to the X-axis direction, forming a concave shape. This allows the inclined surface 35 to contact the inner surface of the ear canal 106 over a wide area when the earphone 1 is worn in the ear 101, and the vibrating body 31 also contacts the tragus 103 and the entrance of the ear canal 104, increasing the area of ​​contact with the ear cartilage 110. Because vibrations from the vibrating body 31 can be efficiently transmitted to the ear cartilage 110, sound is transmitted clearly even with small vibrations compared to bone conduction systems, reducing the likelihood of sound leakage.

[0040] The tip portion 33 can be inserted into the ear canal 104 toward the ear canal. The outer diameter of the tip portion 33 is slightly smaller than the ear canal 104, and the ear canal 104 is not sealed, but is semi-sealed. Here, semi-sealed refers to a state in which external environmental sounds can be heard and the ear cartilage 110 acts as a speaker, increasing the density of sound waves generated in the ear canal 104. Because the density of sound waves generated in the ear canal 104 is high, the voice band of around mid-low frequencies (100 to 1000 Hz) is raised, making it possible to hear human voices clearly.

[0041] The vibration receiving part 32 is a hollow cylindrical body provided on the inner surface side of the inclined surface 35, and the inner diameter of the vibration receiving part 32 corresponds to the outer diameter of the vibration transmitting part 25. The vibration transmitting part 25 and the vibration receiving part 32 are detachably fitted together, and transmit the vibration generated in the vibration unit 21 to the vibrating body 31.

[0042] Furthermore, when the vibration transmitting unit 25 and the vibration receiving unit 32 are detachably fitted together, the vibrating body 31 can be replaced to fit the size of the ear 101 of the person wearing the earphone 1, providing a good fit to the person wearing the earphone 1. It also becomes possible to prevent the earphone 1 from falling off.

[0043] Alternatively, the tip of the vibration transmitter 25 may have a substantially spherical portion 26, and the vibration receiver 32 may be a bearing 36 that corresponds to the substantially spherical portion 26. With the substantially spherical portion 26 and bearing 36, the earphone body 2 and vibrating body 31 can be rotatably connected, and the earphone 1 can be worn along the ear 101, resulting in a better fit.

[0044] The vibration receiving section 32 may be a columnar body having a substantially spherical section 26 at the tip, and the vibration transmitting section 25 may be a bearing section 36 corresponding to the substantially spherical section 26 .

[0045] An annular ring body 41 made of an elastic material is removably fitted around the outer periphery of the base end 34, improving the fit when wearing the earphone 1 and enabling it to be worn stably in the ear 101. The ring body 41 also has a ring body protrusion 42 that protrudes outward in a convex shape along approximately one-quarter of its circumference. By fitting ring bodies 41 with ring body protrusions 42 that protrude to different heights into the base end 34 depending on the shape (size) of the ear 101 of the wearer of the earphone 1, it becomes possible to wear the earphone 1 stably. Note that when wearing the earphone 1 in a small ear 101, it is sufficient to fit a ring body 41 that does not have a ring body protrusion 42 into the base end 34.

[0046] Next, an earphone 1 according to a second embodiment of the present invention will be described. Only the differences between the first and second embodiments of the present invention will be described, and a description of the similarities with the first embodiment will be omitted.

[0047] Fig. 6 is an external view of an earphone 1 according to a second embodiment of the present invention, with (A) being a left side view, (B) being a front view, and (C) being a right side view. Fig. 7 is a plan view of the earphone 1, and Fig. 8 is a perspective external view of the earphone 1. Fig. 9 is a schematic cross-sectional view taken along line BB in Fig. 7, showing the internal configuration of the earphone 1.

[0048] The earphone 1 includes an earphone main body 2 and a vibrating body 31.

[0049] The earphone main body 2 includes a microphone 3, a power supply unit 4, a vibration unit 21, a housing 22, a vibration-isolating material 51, and a control board (not shown).

[0050] Housing 22 houses microphone 3, power supply unit 4, vibration unit 21, vibration-isolating material 51, and a control board. Vibration unit 21 is made up of vibrator 23, diaphragm 24 that holds vibrator 23 and vibrates in response to vibrations generated by vibrator 23, and vibration transmission section 25 provided on diaphragm 24.

[0051] Diaphragm 24 holds vibrator 23 by adhering closely to the side surfaces (X-axis direction and Y-axis direction) and bottom surface (-Z-axis direction) of vibrator 23. Furthermore, columnar vibration transmitting part 25 extending in the -Z-axis direction is provided on the bottom surface (-Z-axis direction) of vibrating plate 24. Vibration transmitting part 25 has a tip end with approximately spherical part 26 that is approximately spherical.

[0052] The vibrating body 31 is a hollow body having a tip portion 33 extending in one axial direction (-Z-axis direction), an inclined surface 35 connected to the base end of the tip portion 33 and inclined with respect to the one axial direction, an annular base portion 34 extending in directions (X-axis and Y-axis) perpendicular to the one axial direction, an upper end surface 37 connected to one end of the base portion 34 opposite the tip portion 33, and a vibration receiving portion 32 provided on the outer surface of the upper end surface 37 to which vibrations are transmitted from the vibration transmitting portion 25. The vibrating body 31 comes into contact with the ear cartilage 110 and transmits vibrations to the contact portion of the ear cartilage 110. The ear cartilage 110 acts as a speaker and generates sound waves in the ear canal 104.

[0053] The vibration receiving unit 32 has a bearing 36 that corresponds to the approximately spherical portion 26 at the tip of the vibration transmitting unit 25. The approximately spherical portion 26 and the bearing 36 are detachably and rotatably connected. Because the approximately spherical portion 26 and the bearing 36 are rotatably connected, the orientation of the earphone body 2 can be freely changed. This makes it possible to wear the earphone 1 along the ear 101, providing a comfortable fit.

[0054] The vibration receiving section 32 may be a columnar body having a substantially spherical section 26 at the tip, and the vibration transmitting section 25 may be a bearing section 36 corresponding to the substantially spherical section 26 .

[0055] Furthermore, the vibrating body 31 may be made of any transparent or semi-transparent material that will not deform or deteriorate even when subjected to continuous vibrations. The vibrating body 31 may be made of resin such as polycarbonate, polypropylene, polyethylene, ABS resin, or polyamide.

[0056] When the earphones 1 are worn, a problem occurs in that when a third party sees the wearer, they assume that the ears 101 are blocked by the earphones 1, and the third party does not speak to the wearer. In contrast, if the vibrating body 31 is transparent or semi-transparent, even if the wearer is wearing the earphones 1, when a third party sees the wearer, they will not assume that the ears 101 are blocked by the earphones 1, and it is expected that the third party will speak to the wearer.

[0057] Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the claims that such modifications and improvements can also be included within the technical scope of the present invention. [Industrial Applicability]

[0058] The earphone 1 according to the present invention can provide an earphone 1 that transmits sound via cartilage, improving vibration transmission efficiency to generate sufficient sound pressure when the ear canal is open, and providing good clarity without reducing the vocal range. It can also provide an earphone 1 that transmits sound via cartilage, providing a comfortable fit for people with ears 101 of all sizes, and that will not easily fall off even when running. [Explanation of symbols]

[0059] 1 earphones 2 Earphone body 3. Microphone 4 Power Supply Unit 21 Vibration unit 22 Case 23 Oscillator 24 Diaphragm 25 Vibration transmission unit 26 Almost spherical part 31 Vibration body 32 Vibration receiver 33 Tip 34 Proximal end 35 Slope 36 Bearing section 37 Upper end surface 41 Ring body 42 Ring body protrusion 51 Vibration isolation material 101 Ears 102 Auricle 103 Tragus 104 External auditory canal 106 Concha cavity 110 Soft ear bone

Claims

1. an earphone body including a vibration unit having a vibrator that generates vibrations, a diaphragm that holds the vibrator and vibrates due to the vibrations generated by the vibrator, and a vibration transmission part provided on the diaphragm; a housing that houses at least the vibration unit; and a vibration-proof material that supports the vibration unit and prevents the vibrations generated by the vibrator from being transmitted to the housing; An earphone comprising: a vibrator that contacts ear cartilage and transmits vibrations to the contact portion of the ear cartilage, the vibrator having a tip portion that extends in one axial direction, an inclined surface that is connected to the base end of the tip portion and is inclined with respect to the one axial direction, an annular base end that extends in a direction perpendicular to the one axial direction, and a vibration receiving portion to which vibrations are transmitted from the vibration transmitting portion.

2. The earphone according to claim 1 , wherein the vibration transmitting unit and the vibration receiving unit are detachably connected.

3. 3. The earphone according to claim 1, further comprising a ring body that is removably fitted onto the outside of the base end.

4. The earphone according to claim 3, wherein the ring body is made of an elastic material.

5. The earphone according to claim 4, wherein the vibration-proofing material has a hardness of 5 or more and 30 or less.

6. 3. The earphone according to claim 1, wherein the inclined surface is inclined at an angle of 25 to 35 degrees with respect to the orthogonal direction and is formed in a concave shape.

7. The earphone according to claim 6, further comprising a ring body that is removably fitted onto the outside of the base end portion.

8. The earphone according to claim 7, wherein the ring body is made of an elastic material.

9. The earphone according to claim 8, wherein the vibration-proofing material has a hardness of 5 or more and 30 or less.

10. an earphone body including a vibration unit having a vibrator that generates vibrations, a diaphragm that holds the vibrator and vibrates due to the vibrations, and a vibration transmission part provided on the diaphragm; a housing that houses at least the vibration unit; and a vibration-proof material that supports the vibration unit and prevents the vibrations generated by the vibrator from being transmitted to the housing; a vibrator that contacts ear cartilage and transmits vibrations to a contact portion of the ear cartilage, the vibrator having a tip portion that extends in one axial direction, an inclined surface that is connected to a base end of the tip portion and is inclined with respect to the one axial direction, an annular base end that extends in a direction perpendicular to the one axial direction, and a vibration receiving portion to which vibrations are transmitted from the vibration transmitting portion; The vibration transmission unit and the vibration receiving unit are characterized in that they are rotatably connected, with one end consisting of an approximately spherical portion having an approximately spherical shape and the other consisting of a bearing portion corresponding to the approximately spherical portion.

11. The earphone according to claim 10, wherein the vibration transmitting unit and the vibration receiving unit are detachably connected.

12. The earphone according to claim 10 or 11, further comprising a ring body that is removably fitted onto the outside of the base end portion.

13. The earphone according to claim 12, wherein the ring body is made of an elastic material.

14. The earphone according to claim 13, wherein the vibration-proofing material has a hardness of 5 or more and 30 or less.

15. The earphone according to claim 10 or 11, wherein the inclined surface is inclined at an angle of 25 to 35 degrees with respect to the orthogonal direction and is formed in a concave shape.

16. The earphone according to claim 15, further comprising a ring body that is removably fitted onto the outside of the base end portion.

17. The earphone according to claim 16, wherein the ring body is made of an elastic material.

18. 18. The earphone according to claim 17, wherein the vibration-proofing material has a hardness of 5 or more and 30 or less.

19. an earphone body including a vibration unit having a vibrator that generates vibrations, a diaphragm that holds the vibrator and vibrates due to the vibrations, and a vibration transmission part provided on the diaphragm; a housing that houses at least the vibration unit; and a vibration-proof material that supports the vibration unit and prevents the vibrations generated by the vibrator from being transmitted to the housing; a vibrator that contacts ear cartilage and transmits vibrations to a contact portion of the ear cartilage, the vibrator having a tip portion extending in one axial direction, an inclined surface connected to a base end of the tip portion and inclined with respect to the one axial direction, an annular base end portion that extends in a direction perpendicular to the one axial direction, an upper end surface connected to one end of the base end portion on the opposite side to the tip portion, and a vibration receiving portion provided on the outer surface of the upper end surface to which vibrations are transmitted from the vibration transmitting portion; The vibration transmission unit and the vibration receiving unit are characterized in that one of them has an approximately spherical portion at the tip and the other has a bearing portion corresponding to the approximately spherical portion, and are rotatably connected.

20. The earphone according to claim 19, wherein the vibration transmitting unit and the vibration receiving unit are detachably connected.

21. The earphone according to claim 19 or 20, further comprising a ring body that is removably fitted onto the outside of the base end portion.

22. The earphone according to claim 21, wherein the ring body is made of an elastic material.

23. 23. The earphone according to claim 22, wherein the vibration-proof material has a hardness of 5 or more and 30 or less.

24. The earphone according to claim 19 or 20, wherein the inclined surface is inclined at an angle of 25 to 35 degrees with respect to the orthogonal direction and is formed in a concave shape.

25. The earphone according to claim 24, further comprising a ring body that is removably fitted onto the outside of the base end.

26. 26. The earphone according to claim 25, wherein the ring body is made of an elastic material.

27. 27. The earphone according to claim 26, wherein the vibration-proofing material has a hardness of 5 or more and 30 or less.

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