JP5355303B2 - Ear pad and earphone having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ear pad which can maintaine communication between the inside and the outside of an ear canal regardless of the deformation of an elastically deformable part caused by insertion into the ear canal, does not intercept an environmental sound, provides high sound clarity, can reproduce an articulate low-pitched sound and a clear middle and high-pitched sound, gives a favorable feeling of mounting, and improves sound quality. <P>SOLUTION: The ear pad is formed of an elastically deformable material and has a tip inserted to an ear canal and includes: a cylindrical body where a sound guide hole for generating a sound by an earphone incident on the ear canal is formed; and an elastically deformable part which is connected to the tip of the body and obliquely spread from the tip toward a rear end. The elastically-deformable part has a plurality of slit-like openings which are radially extended when viewed from the side of the tip of the body, and the body has grooves which are formed in positions corresponding to respective openings on the outer peripheral surface of the body and extended in an axial direction, and the openings and the grooves corresponding to them overlap when the elastically deformable part is deformed and pressed to the outer peripheral surface of the body. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an ear pad that is at least partially inserted into the ear canal and an earphone having the ear pad.

  2. Description of the Related Art Conventionally, earphones that are used by being attached to an auricle are known in which an ear pad made of soft rubber or the like having elasticity is attached to a portion that is inserted into the ear canal from a concave portion of the auricle (for example, a patent) Reference 1). Since such an earphone is attached by inserting the ear pad into the ear canal from the concave portion of the auricle, it can be securely attached to the auricle. Moreover, since the ear pad is made of a material having elasticity, it can be easily elastically deformed according to the shape of the ear canal, and a good wearing feeling can be obtained.

  FIG. 6 is a partial cross-sectional view showing the structure of a conventional earphone.

  In the figure, reference numeral 811 denotes an earphone housing, in which a driver unit (not shown) having a diaphragm or the like is mounted, and at the lower end thereof, other audio devices (not shown) such as a music player, a television, a radio, a video deck, etc. One end of a wire cable 891 to be end-connected is connected. The base end of the sound conduit 815 extending toward the right is integrally connected to the right end of the housing 811. Note that a sound guide hole 816 communicating with the space in the housing 811 is formed in the sound conduit 815.

  A base portion 851 of an ear pad 850 made of soft rubber or the like is fitted around the sound conduit 815. The ear pad 850 includes a conduit portion 852 extending rightward from the base portion 851 and a thin shade portion 855 extending from the distal end of the conduit portion 852 to the periphery. A guide hole portion 853 that communicates with the guide hole 816 and opens at the center of the shade portion 855 is formed. The shade portion 855 is provided with a plurality of small holes 856.

  When the earphone is attached, the tip of the ear pad 850 is inserted into the ear canal, and the cap portion 855 blocks the inside and outside of the ear canal. However, since the inside and outside of the ear canal are communicated by the presence of the small hole 856, even when the earphone is attached. External environmental sounds such as alarms enter the ear canal and reach the eardrum, so that safety does not deteriorate.

Utility Model Registration No. 3121893

  However, in the conventional earphone, since the cap portion 855 is thin, when the tip portion of the ear pad 850 is inserted into the ear canal, the cap portion 855 that is pressed and deformed by the ear canal is pressed against the outer periphery of the conduit portion 852, and the small hole 856 is inserted. Will be blocked. Therefore, the inner and outer sides of the ear canal are blocked by the cap portion 855, and the external environmental sound does not reach the eardrum. In addition, since sound from the driver unit that has entered the ear canal through the sound guide hole 816 and the guide hole portion 853 does not escape to the outside, so-called sound loss is worsened, resulting in a feeling of being muffled in the sound, a feeling of stickiness, and the like. Will fall.

  The present invention solves the above-mentioned conventional problems, and has a plurality of slit-like openings extending radially in the cap-shaped elastic deformation portion connected to the tip of the cylindrical main body portion when viewed from the tip side. And forming a plurality of grooves in the outer periphery of the main body portion and communicating with the opening and extending in the axial direction, even if the elastic deformation portion is deformed when inserted into the external auditory canal. , Can maintain internal and external communication of the external auditory canal, does not block the environmental sound, has good sound omission, can reproduce sharp bass and clear mid-high sound, good wearing feeling An object of the present invention is to provide an earpad with high sound quality and an earphone having the earpad.

  Therefore, the earpad of the present invention is an earpad made of an elastically deformable material, attached to an earphone housing, and having at least a tip portion that can be inserted into the ear canal. A cylindrical main body portion formed with a sound guide hole to be incident on the ear canal, and an elastic deformation portion connected to the front end of the main body portion and extending obliquely from the front end toward the rear end; Is provided with a plurality of slit-like openings extending radially when viewed from the front end side of the main body, and the main body is axially formed at positions corresponding to each of the openings on the outer peripheral surface thereof. When the elastically deforming portion is deformed and pressed against the outer peripheral surface of the main body portion, the opening portion and the corresponding groove overlap each other.

  In another ear pad of the present invention, the tip of the opening communicates with the tip of the sound guide hole.

  In still another ear pad of the present invention, the tip of the opening is continuous with the tip of the groove.

  In the earphone of the present invention, the earphone having the earpad of the present invention, comprising a casing including a cylindrical auricle insertion portion, and a driver unit that generates sound disposed in the casing, A body portion of the ear pad is attached to the auricle insertion portion.

  In another earphone of the present invention, the casing further includes a cone part connected to a proximal end of the auricle insertion part, and the cone part is provided in each of the openings on the surface thereof. An axially extending groove formed at a corresponding position is provided, and a tip of the groove communicates with a rear end of the groove provided in the main body portion of the ear pad.

  According to the present invention, the ear pad is formed with a plurality of slit-like openings extending radially when viewed from the front end side in the cap-shaped elastic deformation portion connected to the front end of the cylindrical main body portion. In addition, a plurality of grooves that communicate with the opening and extend in the axial direction are formed on the outer periphery of the main body. As a result, even when the elastically deforming portion is deformed when inserted into the ear canal, the internal and external communication of the ear canal can be maintained, the environmental sound is not blocked, the sound is satisfactorily cut off, and the sound is cut off. Good bass and clear medium and high sounds can be reproduced, the feeling of wearing becomes good, and the sound quality can be improved.

It is a perspective view of the earphone in the embodiment of the present invention, and is a partially cutaway view. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a five-side view of an earphone according to an embodiment of the present invention, where (a) is a top view, (b) is a left side view, (c) is a rear view, (d) is a right side view, and (e) is a right side view. It is a front view. It is sectional drawing of the earphone in embodiment of this invention, Comprising: It is AA arrow sectional drawing in FIG.2 (c). It is a four-view figure of the ear pad in embodiment of this invention, (a) is a left view, (b) is a rear view, (c) is a right view, (d) is a front view. It is sectional drawing of the ear pad in embodiment of this invention, Comprising: (a) is BB arrow sectional drawing in FIG.4 (b), (b) is CC arrow sectional drawing in FIG.4 (b). (C) is DD sectional view taken on the line in FIG.4 (c), (d) is EE arrow sectional drawing in FIG.4 (c). It is a fragmentary sectional view which shows the structure of the conventional earphone.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of an earphone according to an embodiment of the present invention and is a partially cutaway view, FIG. 2 is a five-side view of the earphone according to the embodiment of the present invention, and FIG. 3 is a cross-sectional view of the earphone according to the embodiment of the present invention. It is a figure and it is AA arrow sectional drawing in FIG.2 (c). 2A is a top view, FIG. 2B is a left side view, FIG. 2C is a rear view, FIG. 2D is a right side view, and FIG. 2E is a front view.

  In the figure, reference numeral 10 denotes an earphone according to the present embodiment, which is a small-sized sound generator that is used by being mounted on the user's pinna, is driven by a sound signal that is an electrical signal, and reproduces the sound signal. The earphone 10 has a housing 11 as a housing that houses a driver unit 41 as a speaker unit that reproduces a sound signal and generates sound, and is attached to the housing 11, and at least its tip 55 is used. And an ear pad 50 that can be inserted into a person's ear canal.

  The housing 11 includes a front housing 12 positioned on the front side thereof, a truncated conical rear housing 13 coupled to the rear side of the base 12 a of the front housing 12, and a rear housing 13. And a lid (lid) housing 14 coupled to the side. As shown in FIG. 3, the driver unit 41 is held in the casing 11 with the front casing 12 and the rear casing 13 being sandwiched between the front and rear (up and down in FIG. 3). . Further, the rear surface of the rear housing 13 is closed by the lid housing 14, so that a shape of a combination of a truncated cone and a cylinder is provided behind the driver unit 41 in the housing 11 (downward in FIG. 3). A rear space 24 that is a space is formed. A surface facing the driver unit 41 in the rear space 24 is an inner surface of the lid housing 14 and is a plane parallel to a diaphragm (not shown) of the driver unit 41. The driver unit 41 is a so-called dynamic type, and generates sound by vibrating the diaphragm.

  In the example shown in the figure, the lid casing 14 is a separate member from the rear casing 13, but may be formed integrally with the rear casing 13. The casing 11 is made of, for example, a resin such as a synthetic resin, but may be made of a metal such as aluminum, steel, or copper, or a composite material in which a resin, carbon, metal, or the like is combined. It may be a thing.

  Further, an upper end of a cylindrical cable holding portion 15 that surrounds and holds a part of the electric cable 91 having one end connected to the driver unit 41 is attached to the lid housing 14. The cable holding portion 15 may be formed integrally with the lid housing 14. An electric cable 91 extends from the lower end of the cable holding portion 15. 1 and 2, for the convenience of illustration, the electric wire cable 91 is drawn only in a portion close to the cable holding portion 15, and drawing is omitted in the other portions. The other end of the wire cable 91 (not shown) is connected to an audio device (not shown) such as a music player, a television, a radio, and a video deck.

  In addition to the cylindrical base 12a, the front housing 12 includes a truncated cone-shaped conical portion 16 projecting forward from the base 12a, and a cylindrical auricle insertion projecting from the tip of the conical portion 16. And a pad mounting portion 17 as a portion. The diameter of the tip of the conical portion 16 is smaller than the base end (portion connected to the base portion 12a), so that a truncated cone is formed in front of the driver unit 41 in the housing 11 (upward in FIG. 3). A front space 21 that is a shaped space is formed. The pad mounting portion 17 has a housing sound guide hole 22 as a sound guide hole which is a cylindrical opening whose rear end communicates with the front space 21 and whose front end is open. Thereby, the sound generated by the driver unit 41 enters the user's ear canal through the front space 21 and the housing sound guide hole 22. In the example shown in the figure, the conical portion 16 is formed so that the axial center of the distal end thereof is inclined to the right with respect to the axial center of the proximal end. It may be inclined in any direction with respect to the axial center, and is not necessarily inclined, and the axial center at the distal end may be parallel to the axial center at the proximal end.

  A front air duct 25 as an air vent is formed in the conical portion 16 of the front housing 12. The front air duct 25 is a hole having a circular cross section formed so as to penetrate the conical portion 16, communicates the front space 21 with the outside, and allows air in the front space 21 to escape to the outside. The front air duct 25 is formed in a portion of the conical portion 16 adjacent to the base portion 12a, that is, a portion of the surface facing the front. That is, the front air duct 25 is formed so as to face forward, and allows air in the front space 21 to escape forward. In addition, although the diameter of the front air duct 25 is 1.2 [mm], for example, it can be changed according to the performance of the driver unit 41, the size of the front space 21, and the like.

  Further, the rear housing 13 is formed with a rear air duct 28 as an air vent, and a first adjustment hole 27a and a second adjustment hole 27b as sound quality adjustment holes. In the case where the first adjustment hole 27a and the second adjustment hole 27b are collectively described, they are described as the adjustment holes 27.

  The rear air duct 28 is a hole having a circular cross section formed so as to penetrate the rear housing 13, communicates the rear space 24 with the outside, and allows air in the rear space 24 to escape to the outside. . The rear air duct 28 is formed on a portion of the rear casing 13 facing the side. That is, the rear air duct 28 is formed so as to face sideways, and allows air in the rear space 24 to escape sideways. Although the diameter of the rear air duct 28 is set to be equal to the front air duct 25, it can be changed according to the performance of the driver unit 41, the size of the rear space 24, and the like. In this way, air bleed with the same diameter, that is, by arranging the front air duct 25 and the rear air duct 28 in the front space 21 and the rear space 24, it is possible to correct distortion and distortion of the sound, The load on the diaphragm of the driver unit 41 can be reduced.

  The first adjustment hole 27 a and the second adjustment hole 27 b are holes having a circular cross section formed so as to penetrate the rear housing 13. The first adjustment hole 27 a and the second adjustment hole 27 b communicate with the rear space 24 and the outside. Adjacent and arranged side by side in a row on the same circumference in the rear housing 13. The diameter of the first adjustment hole 27a is smaller than the diameter of the rear air duct 28, and the diameter of the second adjustment hole 27b is smaller than the diameter of the first adjustment hole 27a.

  The diameter of the first adjustment hole 27a is, for example, 0.8 [mm]. By setting the diameter of the first adjustment hole 27a to such a value, it is possible to control the sound in the frequency band centered on 1200 [Hz], make the frequency response smoother, and improve the sound quality. The diameter of the second adjustment hole 27b is, for example, 0.4 [mm]. By setting the diameter of the second adjustment hole 27b to such a value, it is possible to control the sound in the frequency band centered on 200 [Hz], make the frequency response smoother, and improve the sound quality.

  In the example shown in the figure, there are two adjustment holes 27, the first adjustment hole 27a and the second adjustment hole 27b, but the adjustment hole 27 may be one, or three or more. Also good. The diameter of the adjustment hole 27 can be changed according to the frequency band of the sound to be controlled. That is, the diameter of the adjustment hole 27 may be reduced in order to control the sound in the low frequency band, and the diameter of the adjustment hole 27 may be increased in order to control the sound in the high frequency band.

  An ear pad 50 is attached to the pad attaching portion 17. The ear pad 50 is an integrally formed member made of a soft elastically deformable material such as silicone rubber, for example, and includes a cylindrical main body 51 fitted around the pad mounting portion 17, and the main body The cap portion 53 is provided as an elastically deforming portion that extends obliquely from the front end to the rear end of the portion 51. At the rear end of the main body portion 51, a thick flange-like engagement convex portion 52 that protrudes inward is formed. The engaging convex portion 52 engages with a groove-shaped engaging concave portion 17 a formed at the base end portion (connecting portion with the tip of the conical portion 16) of the pad attaching portion 17, and the ear pad 50 extends from the pad attaching portion 17. Prevents from coming off.

  The ear pad 50 has a shape like a mushroom or an umbrella as a whole, and the tip of the cap 53 is connected to the tip of the main body 51 at the tip 55, and the outer peripheral surface of the main body 51 and the cap 53 A cavity 65 is formed between the inner peripheral surface. And in the center of the main-body part 51, the pad sound guide hole 61 as a sound guide hole which is a cylindrical opening with the front and rear ends opened is formed. In a state where the ear pad 50 is attached to the pad attachment portion 17, the pad sound conducting hole 61 communicates with the housing sound conducting hole 22.

  The cap portion 53 includes a truncated cone-shaped front half 53a that extends rearward, and a cylindrical rear half 53b that extends rearward from the rear end of the front half 53a. The cap portion 53 is thinner than the main body portion 51 and has flexibility, and is easily elastically deformed by receiving a force. Therefore, when the ear pad 50 is inserted into the ear canal, the cap 53 is elastically deformed so as to conform to the inner surface shape of the ear canal, and does not damage the ear canal and adheres without applying a reaction force to the inner surface of the ear canal. Therefore, a feeling of wearing, a feeling of fitting, etc. become good.

  Furthermore, a plurality of (six in the example shown in the figure) slit-like openings 62 are formed in the front half 53a of the cap 53, extending radially when viewed from the front end side. When the user wears the earphone 10, the ear pad 50 is inserted into the ear canal, and the inside and outside of the ear canal are blocked by the cap 53. However, since the inside and outside of the ear canal communicate with each other due to the presence of the opening 62, even when the earphone 10 is worn, an external environmental sound such as an alarm enters the ear canal and reaches the eardrum, thereby improving safety. There is no decline. In addition, since the air inside the ear canal is released to the outside through the opening 62, a feeling of pressure, a feeling of squeezing, etc. of sound incident from the driver unit 41 through the housing sound guide hole 22 and the pad sound guide hole 61 into the ear canal Is reduced. For this reason, the low-frequency sound becomes good and the mid-high sound becomes clear. Moreover, since the sound from the driver unit 41 does not press the eardrum, it is good in terms of health.

  A pad groove 63 as a groove extending in the front-rear direction, that is, the axial direction of the main body 51 is formed on the outer peripheral surface of the main body 51 at a position corresponding to each of the openings 62. Therefore, even when the ear pad 50 is inserted into the ear canal, the opening portion 62 and the corresponding pad groove 63 overlap each other even when the cap portion 53 is deformed and pressed against the outer peripheral surface of the main body portion 51. Communicating inside and outside the ear canal is maintained.

  Further, at least in the vicinity of the connection portion with the pad mounting portion 17 on the surface of the conical portion 16 of the front housing 12, in a position corresponding to each of the pad grooves 63, in the front-rear direction, that is, in the axial direction of the conical portion 16. A housing groove 31 is formed as an extending groove. The front end of the housing groove 31 communicates with the rear end of the pad groove 63 and extends rearward from the rear end of the cap portion 53. Therefore, when the ear pad 50 is inserted into the ear canal, the cap portion 53 is deformed, and even if the cap portion 53 is pressed not only on the outer peripheral surface of the main body portion 51 but also on the surface of the conical portion 16, Since the corresponding pad groove 63 and the housing groove 31 communicate with each other, communication between the inside and outside of the ear canal is maintained.

  Next, the configuration of the ear pad 50 will be described in detail.

  4 is a four-sided view of the ear pad according to the embodiment of the present invention, and FIG. 5 is a cross-sectional view of the ear pad according to the embodiment of the present invention. 4, (a) is a left side view, (b) is a rear view, (c) is a right side view, (d) is a front view, and FIG. 5 (a) is in FIG. 4 (b). BB arrow sectional drawing, (b) is CC arrow sectional drawing in FIG.4 (b), (c) is DD arrow sectional drawing in FIG.4 (c), (d) is FIG.4. It is EE arrow sectional drawing in (c).

  The tip of the main body 51 and the tip of the cap 53 are connected by a tip connecting portion 54, and the tip of each opening 62 communicates with the tip of the pad sound guide hole 61 via a communication recess 64. In the circumferential tip portion 55 of the ear pad 50, the tip connection portion 54 and the communication recess 64 are alternately arranged. Therefore, a part of the sound that has entered the external auditory canal through the housing sound guide hole 22 and the pad sound guide hole 61 from the driver unit 41 passes through the communication recess 64 to the outside, so that the compression is applied. The feeling of feeling and voluminousness is reduced and clear.

  As shown in FIG. 5A, the tip connection portion 54 is thicker than the cap portion 53, and thus has a higher rigidity than the cap portion 53 and is not easily deformed. Further, the communication recess 64 disposed so as to be sandwiched between the tip connection portions 54 is recessed rearward from the tip edge of the tip portion 55, that is, the tip edge of the tip connection portion 54 as viewed from the side. It is formed to enter. Therefore, even if the cap 53 is deformed when the ear pad 50 is inserted into the ear canal, the communication recess 64 is not blocked (soaked), and the communication between the pad sound guide hole 61 and the opening 62 is maintained. The As described above, even when the cap portion 53 is deformed and pressed against the surface of the conical portion 16 as well as the outer peripheral surface of the main body portion 51, the opening 62, the pad groove 63, and the housing The groove 31 communicates. Therefore, a stable passage of sound from the pad sound guide hole 61 to the outside through the communication recess 64, the opening 62, the pad groove 63, and the housing groove 31 is ensured, so that a feeling of pressure, a feeling of bulkiness, etc. are stable. Reduced, and clear sound quality is maintained.

  Further, as shown in FIG. 5B, it is desirable that the opening 62 is formed to be continuous with the tip of the pad groove 63 at the tip. In this case, even if the shade 53 is greatly deformed, the communication between the opening 62 and the pad groove 63 is stably maintained.

  Further, as shown in FIG. 4D, a plurality of slit-like openings 62 extending radially when viewed from the front are formed in the front half 53a of the shade 53. Therefore, the presence of the opening 62 reduces the rigidity of the front half 53a and makes it easy to deform. When the ear pad 50 is inserted into the ear canal, not only the front half 53a but also the entire cap 53 is elastically deformed flexibly. And conforms to the inner shape of the ear canal. Therefore, the external auditory canal is not damaged, the safety is high, and the cap portion 53 adheres to the inner surface of the external auditory canal without applying a reaction force.

  In the example shown in the figure, the number of the openings 62, the pad grooves 63, the housing grooves 31, and the communication recesses 64 is six, but the number is not necessarily six, and is five or less. There may be seven or more.

  Thus, in the present embodiment, the ear pad 50 is connected to the cylindrical main body 51 in which the pad sound guide hole 61 for allowing the sound generated by the earphone 10 to enter the external auditory canal is formed, and to the tip of the main body 51. The cap portion 53 extends obliquely from the front end to the rear end, and the cap portion 53 includes a plurality of slit-like openings 62 extending radially when viewed from the front end side of the main body portion 51. The portion 51 includes an axially extending pad groove 63 formed at a position corresponding to each of the opening portions 62 on the outer peripheral surface thereof, and when the cap portion 53 is deformed and pressed against the outer peripheral surface of the main body portion 51. The opening 62 and the corresponding pad groove 63 overlap each other.

  As a result, when the ear pad 50 is inserted into the ear canal, the inside and outside communication of the ear canal is maintained even when the cap 53 is deformed and pressed against the outer peripheral surface of the main body 51. Accordingly, external environmental sounds such as alarms enter the ear canal and reach the eardrum, so that safety does not deteriorate. In addition, since the air inside the ear canal is released to the outside through the opening 62, the feeling of pressure, the feeling of being bulky, and the like of the sound incident on the inside of the ear canal from the earphone 10 are reduced. For this reason, the low-frequency sound becomes good and the mid-high sound becomes clear. Furthermore, since the sound from the earphone 10 does not press the eardrum, it is good in terms of health.

  The tip of the opening 62 communicates with the tip of the pad sound guide hole 61. As a result, a part of the sound that has entered the ear canal through the pad sound guide hole 61 passes through the communication recess 64 to the outside through the opening 62, so that a feeling of pressure, a feeling of bulkiness, etc. are reduced and clear. It becomes.

  Further, the tip of the opening 62 is continuous with the tip of the pad groove 63. Thereby, even if the shade 53 is greatly deformed, the communication between the opening 62 and the pad groove 63 is stably maintained.

  The earphone 10 includes a housing 11 including a cylindrical pad mounting portion 17 and a driver unit 41 that generates sound disposed in the housing 11, and the main body of the ear pad 50 is provided in the pad mounting portion 17. Part 51 is attached.

  As a result, when the ear pad 50 is inserted into the ear canal, the inside and outside communication of the ear canal is maintained even when the cap 53 is deformed and pressed against the outer peripheral surface of the main body 51. Therefore, external environmental sounds such as alarms are not blocked, sound is good, sound can be reproduced well-cut low-pitched sound and clear mid-high sound can be reproduced, wearing feeling is improved, and sound quality is improved. .

  The housing 11 includes a conical portion 16 connected to the base end of the pad mounting portion 17, and the conical portion 16 extends in the axial direction formed at a position corresponding to each of the opening portions 62 on the surface thereof. And the front end of the housing groove 31 communicates with the rear end of the pad groove 63 provided in the main body 51 of the ear pad 50. Thereby, when the ear pad 50 is inserted into the ear canal, the cap portion 53 is deformed, and even if the cap portion 53 is pressed against the surface of the conical portion 16 as well as the outer peripheral surface of the main body portion 51, Since the corresponding pad groove 63 and the housing groove 31 communicate with each other, communication between the inside and outside of the ear canal is maintained.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

  The present invention can be applied to ear pads that are at least partially inserted into the ear canal and earphones having the ear pads.

DESCRIPTION OF SYMBOLS 10 Earphone 11 Housing | casing 12 Front housing | casing 12a, 851 Base 13 Rear housing | casing 14 Cover housing | casing 15 Cable holding part 16 Conical part 17 Pad mounting part 17a Engagement recessed part 21 Front space 22 Case sound guide hole 24 Back space 25 Front Air duct 27 Adjustment hole 27a First adjustment hole 27b Second adjustment hole 28 Rear air duct 31 Housing groove 41 Driver unit 50, 850 Ear pad 51 Main body 52 Engaging convex part 53, 855 Shade part 53a Front half part 53b Rear half part 54 Tip connection Portion 55 Pad 61 Sound conduction hole 62 Opening 63 Pad groove 64 Communication recess 65 Cavity 91, 891 Electric cable 811 Housing 815 Sound conduit 816 Sound conduction hole 852 Conduit portion 853 Conduction hole 856 Small hole

Claims (5)

(A) an ear pad made of an elastically deformable material, attached to the housing of the earphone, and having at least a tip portion inserted into the ear canal,
(B) a cylindrical main body formed with a sound guide hole for allowing the sound generated by the earphone to enter the ear canal;
(C) having an elastically deformable portion connected to the front end of the main body and extending obliquely from the front end toward the rear end;
(D) The elastically deformable portion includes a plurality of slit-shaped openings extending radially when viewed from the distal end side of the main body portion,
(E) The main body includes an axially extending groove formed at a position corresponding to each of the openings on the outer peripheral surface thereof.
(F) The ear pad characterized in that when the elastic deformation portion is deformed and pressed against the outer peripheral surface of the main body portion, the opening portion and a corresponding groove overlap. The ear pad according to claim 1, wherein a tip of the opening communicates with a tip of the sound guide hole. The ear pad according to claim 1, wherein a tip of the opening is continuous with a tip of the groove. An earphone having the earpad according to any one of claims 1 to 3,
A housing including a cylindrical auricle insertion portion, and a driver unit that generates sound disposed in the housing;
An earphone in which a body portion of the ear pad is attached to the auricle insertion portion. The housing includes a conical portion connected to a proximal end of the auricle insertion portion,
The conical portion includes an axially extending groove formed at a position corresponding to each of the openings on the surface thereof,
The earphone according to claim 4, wherein a front end of the groove communicates with a rear end of the groove provided in the main body of the ear pad.

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