JP5592622B2 - Earphone - Google Patents

Earphone Download PDF

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Publication number
JP5592622B2
JP5592622B2 JP2009194644A JP2009194644A JP5592622B2 JP 5592622 B2 JP5592622 B2 JP 5592622B2 JP 2009194644 A JP2009194644 A JP 2009194644A JP 2009194644 A JP2009194644 A JP 2009194644A JP 5592622 B2 JP5592622 B2 JP 5592622B2
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Japan
Prior art keywords
ear canal
portion
sound
housing
front
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JP2009194644A
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Japanese (ja)
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JP2011049686A (en
Inventor
満 細尾
智也 金子
良美 青柳
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モレックス インコーポレイテドMolex Incorporated
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Priority to JP2009194644A priority Critical patent/JP5592622B2/en
Priority claimed from CN201080048384.4A external-priority patent/CN102648639B/en
Publication of JP2011049686A publication Critical patent/JP2011049686A/en
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Publication of JP5592622B2 publication Critical patent/JP5592622B2/en
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Description

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

  2. Description of the Related Art Conventionally, as an earphone that is used by being attached to an auricle, a so-called earphone-type headphone that does not have a protrusion inserted into the ear canal is known (see, for example, Patent Document 1). Such an earphone has, for example, a dynamic type driver unit, and generates a sound by vibrating a diaphragm included in the driver unit.

  FIG. 7 is a cross-sectional view showing the structure of a conventional earphone.

  In the figure, reference numeral 813 denotes a rear housing of the earphone. A driver unit 841 is attached inside the earphone, and a ring-shaped front housing 812 fitted to the front end (lower end in the figure) of the rear housing 813 The driver unit 841 is fixed. A duct-shaped cable holding portion 815 extends from the rear surface of the rear housing 813. One end of the cable holding portion 815 is connected to the driver unit 841, and the other end is not shown. An electric wire cable 891 connected to an acoustic device (not shown) such as a deck is accommodated.

  The driver unit 841 includes a magnet 843 that forms a magnetic circuit, a plate 844, and a yoke 845, and a diaphragm 846 and a voice coil 847 that form a vibration system. Specifically, the plate 844 and the yoke 845 are fixed to both surfaces of the disk-shaped magnet 843. The magnet 843 is, for example, a samarium cobalt magnet. A magnetic gap is formed in a space where the plate 844 and the yoke 845 face each other, and a voice coil 847 fixed to the diaphragm 846 is inserted into the magnetic gap. The diaphragm 846 is, for example, a polyester film. Note that a mesh-shaped protective plate 848 having a relatively large number of openings is disposed in front of the earphone, that is, in front of the diaphragm 846 (downward in the drawing).

  A through hole 849 is formed at the center of the magnet 843, the plate 844, and the yoke 845, and a resistance material 871 made of foamed urethane or the like is embedded in the through hole 849. Further, the driver unit 841 is formed with a plurality of holes 870.

  When the earphone is attached to the concave portion of the auricle, the protective plate 848 disposed on the front surface of the earphone faces the entrance of the ear canal, and sound generated by the vibration of the diaphragm 846 passes through the opening of the protective plate 848 and enters the inside of the ear canal. Incident and reaches the eardrum.

Japanese Utility Model Publication No. 4-50718

  However, since the conventional earphone is worn in the concave portion of the auricle, the wearability is poor, and in particular, when the user is not in a stationary state such as during walking, the earphone may come off from the auricle. In addition, the positional relationship with the ear canal becomes unstable, and the volume and quality of sound incident on the ear canal become unstable. Therefore, in recent years, an earphone of a type having an ear pad made of soft rubber having elasticity and inserting the ear pad into the ear canal has been provided. Since such an earphone is attached by inserting a flexible ear pad into the ear canal, it can be securely attached to the auricle and does not come off the auricle even during walking. 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.

  However, when a flexible ear pad is inserted into the ear canal, the inside and outside of the ear canal is blocked by the ear pad that is pressed and deformed by the ear canal, and the sound incident on the ear canal from the earphone does not escape outside, so the so-called sound loss becomes worse. , A feeling of muffled sound, a feeling of jerkyness, etc. occurs and the sound quality deteriorates. In addition, ear pad resonance may occur in a low frequency band.

  The present invention solves the above-mentioned problems of the conventional earphones, enables an ear canal insertion member to be inserted into the ear canal at least a part of the ear canal to be attached to and detached from the housing body, and uses a soft material when placing importance on wearability. The ear canal insertion member can be attached, and when the sound quality is important, the ear canal insertion member made of a hard material can be attached, so that it can appropriately cope with a wide range of usage situations, high wearability and good wearing An object of the present invention is to provide an earphone with high sound quality that can provide a feeling and can reproduce a low-pitched sound and a clear mid-high sound with good sound omission.

Therefore, in the earphone of the present invention, at least a part of the ear canal insertion member that can be inserted into the ear canal, a housing in which the ear canal insertion member is detachable, and a driver unit that generates sound disposed in the housing a earphone with bets, the ear canal insertion member includes an elastically deformable flexible insert及beauty hard quality insert, the rigid insert includes a main body portion Otoshirubeana is cylindrical which is formed at the center And a bulging portion whose outer surface obliquely spreads from the front end to the rear end of the main body portion, and the bulging portion deforms at least a part of the inner surface of the ear canal when inserted into the ear canal, The soft insertion member and the hard insertion member are selectively attached to the casing, and the casing includes a conical (conical) trapezoidal front space formed in front of the driver unit, and a front end of the front space. Sound that enters the ear canal through communication And the hole, the a rear space cylindrical formed in the rear of the driver unit, said rearward space Ru includes a sound quality adjustment holes opening facing the side.

  In still another earphone of the present invention, the surface facing the driver unit in the rear space is a flat surface, the rear space includes an air adjustment hole that opens to the side, and the front space extends forward. It has an air adjustment hole that opens to face.

  In still another earphone of the present invention, the outer shape of the housing and the external auditory canal insertion member attached to the housing is axisymmetric with respect to an axis extending in the front-rear direction.

  In still another earphone according to the present invention, the soft insertion member is connected to a cylindrical main body portion having a sound guide hole at its center, and a front end of the main body portion, and from the front end toward the rear end. And an elastically deforming portion that spreads obliquely, and the elastically deforming portion includes a plurality of slit-like openings extending radially when viewed from the front end side of the main body portion, and the main body portion is provided on the outer peripheral surface thereof. A groove extending in the axial direction formed at a position corresponding to each of the openings, and when the elastic deformation portion is deformed and pressed against the outer peripheral surface of the main body, the opening and the corresponding groove And overlap.

  According to the present invention, the earphone is configured such that the ear canal insertion member, at least a part of which is inserted into the ear canal, is detachable from the housing. Thus, the ear canal insertion member made of a soft material can be attached when importance is attached to the wearability, and the ear canal insertion member made of a hard material can be attached when importance is attached to sound quality. Therefore, it is possible to appropriately cope with a wide range of usage situations, to obtain high wearability and good wearing feeling, and to reproduce a low-pitched sound and a clear mid-high sound with good sound omission. Sound quality can be improved.

It is sectional drawing which shows the 1st usage example of the earphone in embodiment of this invention, Comprising: It is AA arrow sectional drawing in FIG.2 (c). BRIEF DESCRIPTION OF THE DRAWINGS It is a 5th page figure which shows the 1st usage example of the earphone in embodiment of this invention, (a) is a top view, (b) is a left view, (c) is a rear view, (d) is a right view. FIG. 4E is a front view. 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.3 (b), (b) is CC arrow sectional drawing in FIG.3 (b). It is. It is sectional drawing which shows the 2nd usage example of the earphone in embodiment of this invention, Comprising: It is DD sectional view taken on the line in FIG.6 (c). 5A and 5B are five side views showing a second example of use of the earphone according to the embodiment of the present invention, in which FIG. 5A is a top view, FIG. 5B is a left side view, FIG. FIG. 4E is a front view. It is sectional drawing 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 cross-sectional view showing a first example of use of the earphone according to the embodiment of the present invention, and is a cross-sectional view taken along the line AA in FIG. 2 (c), and FIG. 2 is a first view of the earphone according to the embodiment of the present invention. It is a 5th page figure showing one example of use. 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 a user's pinna and is driven by a sound signal that is an electrical signal to reproduce the sound signal. The earphone 10 has a housing 11 as a housing in which a driver unit 41 as a speaker unit that reproduces an audio signal and generates sound, and is attached to the housing 11 as a first usage example. And at least a tip 55 of the ear pad 50 as an ear canal insertion member that can be inserted into the user's ear canal.

  The casing 11 includes a front casing 12 positioned on the front side thereof, and a truncated conical rear casing 13 coupled to the rear side of the base 12a of the front casing 12. As shown in FIG. 1, the driver unit 41 is held in the casing 11 with the front casing 12 and the rear casing 13 sandwiched between the front and rear (up and down in FIG. 1). . The driver unit 41 is of a so-called dynamic type and has the same configuration as the driver unit 841 of the conventional earphone described in the section “Background Art”. That is, for the description of the driver unit 41, the description of the conventional earphone driver unit 841 is cited.

  Further, the rear surface portion 13a that closes the rear surface of the rear housing 13 is a substantially flat plate-like member, so that the rear surface of the driver unit 41 in the housing 11 (downward in FIG. 1) is entirely disposed. Is formed with a cylindrical shape, more specifically, a rear space 24 which is a space having a combination of a truncated cone and a cylinder. The surface facing the driver unit 41 in the rear space 24 is a flat surface that is the inner surface of the rear surface portion 13a and faces the diaphragm of the driver unit 41. As shown in FIG. 1, the curvature radius is slightly curved. It may be a large loose curved surface. The casing 11 is specifically made of a metal such as aluminum, steel, copper, or an alloy thereof, but may be a hard resin or crystal having a relatively large specific gravity.

  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 rear casing 13. The cable holding portion 15 may be formed integrally with the rear housing 13. An electric cable 91 extends from the lower end of the cable holding portion 15. In FIG. 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 other portions are not drawn. 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 portion 12a, the front housing 12 has a truncated cone-shaped conical portion 16 that protrudes forward from the base portion 12a, and a cylindrical insertion portion that protrudes from the tip of the conical portion 16. Part 17. The diameter of the tip of the conical portion 16 is smaller than that of the base end (portion connected to the base 12a), so that a truncated cone is formed in front of the driver unit 41 in the housing 11 (upward in FIG. 1). A front space 21 that is a shaped space is formed. The insertion portion 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. The conical portion 16 is formed so that the axial center at the distal end thereof coincides with the axial center at the proximal end. Therefore, when the cable holding portion 15 and the electric cable 91 are excluded, the outer shape of the earphone 10 including the housing 11 and the ear pad 50 is circular as viewed from the front, as shown in FIG. As shown in a), (b) and (d), it is axisymmetric with respect to the axis when viewed from the side.

  A front air duct 25 as an air adjustment hole that functions 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 cylindrical side surface portion 13b of the rear housing 13 has a rear air duct 28 as an air adjustment hole that functions as an air vent, and a first adjustment hole 27a, a second adjustment hole 27b, and a third adjustment as sound quality adjustment holes. A hole 27c is formed. In the case where the first adjustment hole 27a, the second adjustment hole 27b, and the third adjustment hole 27c are collectively described, they are described as the sound quality adjustment hole 27.

  The rear air duct 28 is a hole having a circular cross section formed so as to penetrate the side surface portion 13b of the rear housing 13, and the rear space 24 communicates with the outside so that air in the rear space 24 escapes to the outside. Is possible. The rear air duct 28 is formed so as to face sideways, and allows air in the rear space 24 to escape sideways. The diameter of the rear air duct 28 is set to be equal to the front air duct 25, but 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 27a, the second adjustment hole 27b, and the third adjustment hole 27c are holes having a circular cross section formed so as to penetrate the side surface portion 13b of the rear housing 13 and face the side. The rear space 24 and the outside communicate with each other, are adjacent to the rear air duct 28, and are arranged side by side 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, the diameter of the second adjustment hole 27b is smaller than the diameter of the first adjustment hole 27a, and the diameter of the third adjustment hole 27c is equal to that of the second adjustment hole 27b. It is formed to be smaller than the diameter. The diameters of the second adjustment hole 27b and the third adjustment hole 27c may be the same.

  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. Further, the diameter of the third adjustment hole 27c is, for example, less than 0.4 [mm]. By setting the diameter of the third adjustment hole 27c to such a value, it is possible to control sound in a frequency band lower than that of the second adjustment hole 27b, to make the frequency response smoother, and to improve sound quality.

  In addition, when the second adjustment hole 27b and the third adjustment hole 27c have the same diameter, for example, two second adjustment holes 27b, a sound in a frequency band centered on 200 [Hz] is used as one adjustment hole. Control with a different response.

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

  That is, these sound quality adjusting holes 27 determine the sound range to be controlled by the diameter of the holes, and control the characteristics by the number of the sound quality adjusting holes 27, and adjust the air balance that leads to a feeling of openness of the sound.

  Further, the rear air duct 28 and the sound quality adjustment hole 27 formed in the side surface portion 13b of the rear housing 13 are arranged on the same circumference, so that the respective adjustment holes are arranged at the same distance from the driver unit. , You can control the sound more effectively.

  Further, since the housing 11 that houses the driver unit 41 and forms the front space 21 and the rear space 24 in front and rear thereof is made of a metal having a higher specific gravity and higher rigidity than resin or the like, the front space 21 and The function of the rear space 24 as an acoustic space is good, the bass is heavy, and the mid-high is clear. In addition, since the outer shape of the housing 11 is axisymmetric with respect to the axis when viewed from the side, the shapes of the front space 21 and the rear space 24 are also axisymmetric with respect to the axis, thereby generating sound without distortion. be able to.

  An ear pad 50 is attached to the insertion portion attachment portion 17 via an attachment adapter 14. The mounting adapter 14 is a cylindrical member made of the same material as the housing 11, and the lower end thereof is formed on the inner peripheral surface of the insertion portion mounting portion 17, that is, the peripheral surface of the housing sound guide hole 22. It is inserted into the housing recess 17a. The mounting adapter 14 may be fixed to the receiving recess 17a by fitting the lower end of the mounting adapter 14 into the receiving recess 17a. However, a screw groove is formed in the lower end of the mounting adapter 14 and the receiving recess 17a. It is desirable to fix the mounting adapter 14 to the receiving recess 17a by screwing the lower end of 14 into the receiving recess 17a. The mounting adapter 14 is formed with an adapter sound guide hole 14b as a sound guide hole which is a cylindrical opening whose front and rear are open. It is desirable that the inner diameter of the adapter sound guide hole 14b be equal to the inner diameter of the housing sound guide hole 22.

  Further, the ear pad 50 is a soft insertion member, which is an integrally formed member made of a soft elastically deformable material such as silicone rubber, and is fitted into the periphery of the mounting adapter 14. Main body portion 51 and a cap portion 53 as an elastically deforming portion extending obliquely from the front end to the rear end of the main body 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 14 a formed in the mounting adapter 14, and prevents the ear pad 50 from being detached from the mounting adapter 14.

  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. The pad sound guide hole 61 communicates with the housing sound guide hole 22 via the adapter sound guide hole 14b in a state where the ear pad 50 is attached to the insertion portion attachment portion 17 via the attachment adapter 14.

  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.

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

  FIG. 3 is a four-sided view of the ear pad in the embodiment of the present invention, and FIG. 4 is a cross-sectional view of the ear pad in the embodiment of the present invention. 3, (a) is a left side view, (b) is a rear view, (c) is a right side view, (d) is a front view, and FIG. 4 (a) is in FIG. 3 (b). BB arrow sectional drawing, (b) is CC sectional view taken on the line in FIG.3 (b).

  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 from the driver unit 41 through the housing sound guide hole 22, the adapter sound guide hole 14 b, and the pad sound guide hole 61 from the opening 62 through the communication recess 64. Because it goes outside, the feeling of pressure, the feeling of being squeezed, etc. are reduced and clear.

  As shown in FIG. 4A, the tip connection portion 54 is thicker than the cap portion 53, and therefore 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 and the pad groove 63 communicate with each other. To do. Accordingly, since a sound path from the pad sound guide hole 61 to the outside through the communication recess 64, the opening 62 and the pad groove 63 is stably secured, a feeling of pressure, a feeling of being squeezed, etc. are stably reduced, Clear sound quality is maintained.

  Further, as shown in FIG. 4B, the opening 62 is preferably formed so as 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. 3D, a plurality of slit-shaped 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 ear canal is not damaged, the safety is high, and the cap portion 53 is in close contact with the inner surface of the ear canal without applying a reaction force. Is prevented from coming off the pinna.

  In the example shown in the figure, the number of the openings 62, the pad grooves 63, and the communication recesses 64 is six, but it is not necessarily six and may be five or less. 7 or more.

  In this manner, by attaching the ear pad 50 made of a soft material to the insertion portion attachment portion 17 via the attachment adapter 14, the wearability of the earphone 10 is improved. For example, the user performs activities such as walking. Suitable for use. Further, as described above, since the inside and outside of the ear canal communicate with each other due to the presence of the opening 62 and the like, an external environmental sound such as an alarm is incident on the inside of the ear canal and reaches the eardrum, and safety is not deteriorated. Sound quality is also good.

  Next, a second usage example of the earphone 10 will be described.

  FIG. 5 is a cross-sectional view showing a second example of use of the earphone according to the embodiment of the present invention, and is a cross-sectional view taken along the line DD in FIG. 6C, and FIG. 6 is a diagram of the earphone according to the embodiment of the present invention. It is a 5th page figure which shows 2 usage examples. In FIG. 6, (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 front view.

  In the second usage example, an earpiece 70 as an ear canal insertion member that can be inserted at least into the user's ear canal is attached to the housing 11. The earpiece 70 is a hard insertion member, and is made of the same metal as the housing 11, that is, a hard material having a large specific gravity and high rigidity.

  The earpiece 70 is an integrally molded member, and includes a cylindrical main body 71 and a thick bulging portion 74 whose outer surface extends obliquely from the front end to the rear end of the main body 71. . Note that a portion extending rearward from the bulging portion 74 of the main body 71 is an attachment portion 72. The mounting portion 72 is inserted into the housing recess 17 a formed on the inner peripheral surface of the insertion portion mounting portion 17 of the housing 11, that is, the peripheral surface of the housing sound guide hole 22. The earpiece 70 may be fixed to the housing recess 17a by fitting the mounting portion 72 into the housing recess 17a. However, screw grooves are formed in the mounting portion 72 and the housing recess 17a, and the mounting portion 72 is placed in the housing recess 17a. It is desirable to fix the earpiece 70 to the receiving recess 17a by screwing into the receiving recess 17a.

  In addition, a piece sound guide hole 73 is formed in the center of the main body 71 as a sound guide hole which is a cylindrical opening with front and rear ends open. The piece sound guide hole 73 communicates with the housing sound guide hole 22 in a state where the earpiece 70 is attached to the insertion portion attachment portion 17. In addition, it is desirable that the inner diameter of the piece sound guide hole 73 is a value equivalent to the inner diameter of the housing sound guide hole 22.

  The bulging portion 74 has an outer shape like a truncated cone, the outer diameter of the tip portion 75 is the smallest, and the outer diameter increases toward the lower side. That is, since the outer surface of the bulging portion 74 is a tapered taper surface, it can be easily inserted into the ear canal. It is desirable that the maximum outer diameter of the bulging portion 74 is larger than the outer diameter of the upper end of the insertion portion mounting portion 17 of the housing 11.

  Further, when the cable holding portion 15 and the electric cable 91 are excluded, the outer shape of the earphone 10 including the housing 11 and the earpiece 70 is circular as viewed from the front, as shown in FIG. As shown in a), (b) and (d), it is axisymmetric with respect to the axis when viewed from the side.

  The bulging portion 74 of the earpiece 70, when inserted into the ear canal, presses and deforms the inner surface of the ear canal so that at least a part of the inner surface of the ear canal is in close contact with the outer surface of the bulging portion 74. Yes. In this case, since the outer surface of the bulging portion 74 is a tapered taper surface, when the bulging portion 74 is inserted into the ear canal, the inner surface of the ear canal can be smoothly deformed and the ear canal is damaged. There is no adhesion, and the adhesiveness to the outer surface of the bulging portion 74 on the inner surface of the ear canal is high, and the feeling of wearing, fitting, etc. are good.

  Furthermore, since the earpiece 70 including the bulging portion 74 has a large specific gravity and is formed of a hard material having high rigidity, the earpiece 70 does not resonate with the sound from the driver unit 41. Therefore, the sound quality is improved. Further, even if the bulging portion 74 is inserted into the ear canal, the piece sound guide hole 73 is not deformed. Therefore, the sound from the driver unit 41 is incident on the ear canal without being distorted, so that the sound quality is improved.

  Thus, in the present embodiment, the earphone 10 includes an ear canal insertion member that can be at least partially inserted into the ear canal, a housing 11 that can be attached to and removed from the ear canal insertion member, and a sound that is disposed in the housing 11. The ear canal insertion member includes an elastically deformable ear pad 50 and a highly rigid ear piece 70, and the ear pad 50 and the ear piece 70 are selectively attached to the housing 11.

  Thereby, according to the use condition of the earphone 10, the ear pad 50 and the ear piece 70 can be appropriately selected and attached to the housing 11. For example, the ear pad 50 is selected when wearability is important, such as when walking outdoors, and the earpiece 70 is selected when sound quality is important, such as when listening to music indoors. You can choose. Accordingly, it is possible to appropriately cope with a wide range of usage conditions, and it is possible to obtain high wearability and good wearing feeling, and to obtain high sound quality.

  The housing 11 includes a truncated cone-shaped front space 21 formed in front of the driver unit 41, a housing sound guide hole 22 that communicates with the front end of the front space 21 and allows sound to enter the ear canal, and a driver unit. And a cylindrical rear space 24 formed behind 41, made of metal, and the rear space 24 includes a sound quality adjusting hole 27 that opens sideways.

  As described above, the housing 11 that accommodates the driver unit 41 and forms the front space 21 and the rear space 24 in the front and rear thereof is made of a metal having a large specific gravity and high rigidity. The function as the acoustic space of 24 becomes good, a heavy bass and a clear middle and high tone can be generated, and the acoustic characteristics become good. Further, the sound quality adjustment hole 27 can appropriately control the sound quality in a desired frequency band.

  Furthermore, the surface facing the driver unit 41 in the rear space 24 is a flat surface, the rear space 24 includes a rear air duct 28 that opens sideways, and the front space 21 includes a front air duct 25 that opens frontward. . Thereby, distortion and reverberation of sound can be corrected and the load applied to the diaphragm of the driver unit 41 can be reduced.

  Furthermore, the external shape of the external ear canal insertion member attached to the housing | casing 11 and the housing | casing 11 is axisymmetric about the axis line extended in the front-back direction. Thereby, a sound without distortion can be generated.

  Further, the ear pad 50 has a cylindrical main body 51 formed with a pad sound guide hole 61 at the center, and a cap 53 connected to the front end of the main body 51 and extending obliquely from the front end to the rear end. The shade portion 53 includes a plurality of slit-like openings 62 extending radially when viewed from the front end side of the main body 51, and the main body 51 is located at a position corresponding to each of the openings 62 on the outer peripheral surface thereof. When the cap 53 is deformed and pressed against the outer peripheral surface of the main body 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.

  Furthermore, the earpiece 70 includes a cylindrical main body portion 71 formed with a piece sound guide hole 73 at the center, and a bulging portion 74 whose outer surface extends obliquely from the front end to the rear end of the main body portion 71. The bulging portion 74 made of metal deforms at least a part of the inner surface of the ear canal when inserted into the ear canal. Thereby, while a feeling of wearing and a fit are good, the cut of a bass becomes good and a middle and high tone becomes clear. Further, even if the bulging portion 74 is inserted into the ear canal, the piece sound guide hole 73 is not deformed, so that the sound from the driver unit 41 enters the ear canal without distortion and the sound quality is improved.

  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 an earphone having an ear canal insertion member that is at least partially inserted into the ear canal.

10 Earphone 11 Housing 12 Front housing 12a Base 13 Rear housing 13a Rear surface 13b Side surface 14 Mounting adapter 14a, 19a Engaging recess 14b Adapter sound guide hole 15, 815 Cable holding portion 16 Conical portion 17 Inserting portion mounting portion 17a Housing recess 18 Disk portion 19 Pad mounting portion 21 Front space 22 Housing sound guide hole 24 Rear space 25 Front air duct 27 Sound quality adjustment hole 27a First adjustment hole 27b Second adjustment hole 27c Third adjustment hole 28 Rear air ducts 41 and 841 Driver unit 50 Ear pads 51, 71 Main body 52 Engaging convex portion 53 Shade portion 53 a Front half portion 53 b Rear half portion 54 Tip connection portion 55, 75 Tip portion 61 Pad sound guide hole 62 Opening portion 63 Pad groove 64 Communication recess 65 Hollow portion 70 Earpiece 72 Mounting portion 73 Piece sound guide hole 74 Swelling portions 91 and 891 Electric wire cable 812 Part housing 813 rear housing 843 magnet 844 plate 845 yoke 846 diaphragm 847 voice coil 848 protective plate 849 through hole 870 hole 871 resistive material

Claims (4)

  1. (A) an ear canal insertion member that is at least partially insertable into the ear canal;
    (B) a housing to which the ear canal insertion member is detachable;
    (C) an earphone having a driver unit for generating sound disposed in the housing,
    ; (D) ear canal insertion member includes an elastically deformable flexible insert及beauty hard quality insert member,
    (E) The hard insertion member includes a cylindrical main body portion having a sound guide hole at its center, and a bulging portion whose outer surface extends obliquely from the front end to the rear end of the main body portion. When the exit is inserted into the ear canal, it deforms at least part of the inner surface of the ear canal,
    ( F ) The soft insertion member and the hard insertion member are selectively attached to the housing ,
    (G) The housing includes a frustoconical front space formed in front of the driver unit, a sound guide hole communicating with the front end of the front space and allowing sound to enter the ear canal, and the rear of the driver unit. a formed cylindrical rear space, earphones aft space, characterized in Rukoto includes a sound quality adjustment holes opening facing the side.
  2. The surface facing the driver unit in the rear space is a plane,
    The rear space includes an air adjustment hole that opens sideways,
    The earphone according to claim 1 , wherein the front space includes an air adjustment hole that opens forward.
  3. The outer shape of the housing and the housing in the attached ear canal insertion member, earphone according to claim 1 or 2 is a line symmetry with respect to the axis extending in the front-rear direction.
  4. The soft insertion member includes a cylindrical main body portion having a sound guide hole formed at the center, and an elastic deformation portion that is connected to the front end of the main body portion and extends obliquely from the front end toward the rear end,
    The elastic deformation portion includes a plurality of slit-like openings extending radially when viewed from the distal end side of the main body portion,
    The main body includes an axially extending groove formed at a position corresponding to each of the openings on the outer peripheral surface thereof,
    The earphone according to any one of claims 1 to 3 , wherein when the elastically deforming portion is deformed and pressed against the outer peripheral surface of the main body portion, the opening portion and a groove corresponding to the opening portion overlap each other.
JP2009194644A 2009-08-25 2009-08-25 Earphone Expired - Fee Related JP5592622B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009194644A JP5592622B2 (en) 2009-08-25 2009-08-25 Earphone

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
JP2009194644A JP5592622B2 (en) 2009-08-25 2009-08-25 Earphone
CN201080048384.4A CN102648639B (en) 2009-08-25 2010-08-25 Earphone
PCT/US2010/046683 WO2011031491A1 (en) 2009-08-25 2010-08-25 Earphone
US13/392,737 US20120243725A1 (en) 2009-08-25 2010-08-25 Earphone
TW099128437A TWI507049B (en) 2009-08-25 2010-08-25 Earphone
US13/392,747 US20120243726A1 (en) 2009-08-25 2010-08-25 Earphone
PCT/US2010/046679 WO2011025835A1 (en) 2009-08-25 2010-08-25 Ear pad and earphone having the same
US13/392,732 US20120243724A1 (en) 2009-08-25 2010-08-25 Ear pad and earphone having the same
CN201080048385.9A CN102625991B (en) 2009-08-25 2010-08-25 Earphone
CN201080048383.XA CN102625990B (en) 2009-08-25 2010-08-25 Ear pad and earphone having the same
PCT/US2010/046681 WO2011025837A1 (en) 2009-08-25 2010-08-25 Earphone

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JP2011049686A JP2011049686A (en) 2011-03-10
JP5592622B2 true JP5592622B2 (en) 2014-09-17

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CN103974160B (en) * 2014-04-16 2018-08-14 东莞泉声电子有限公司 Dual-speaker headphone
KR20160103489A (en) 2015-02-24 2016-09-01 주식회사 모다이노칩 Sound output apparatus
JP6583226B2 (en) * 2016-11-25 2019-10-02 オンキヨー株式会社 headphone

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JPS5568890U (en) * 1978-11-01 1980-05-12
JPS646636Y2 (en) * 1983-05-12 1989-02-21
US4880076A (en) * 1986-12-05 1989-11-14 Minnesota Mining And Manufacturing Company Hearing aid ear piece having disposable compressible polymeric foam sleeve
JP3815513B2 (en) * 1996-08-19 2006-08-30 ソニー株式会社 earphone
US7027608B2 (en) * 1997-07-18 2006-04-11 Gn Resound North America Behind the ear hearing aid system
JP4151157B2 (en) * 1999-05-31 2008-09-17 ソニー株式会社 Earphone
JP2006246426A (en) * 2005-06-15 2006-09-14 Sano Shujiro Earphone attachment and earphone equipped with the earphone attachment
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JP4709017B2 (en) * 2006-01-12 2011-06-22 ソニー株式会社 Earphone device
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JP2011049686A (en) 2011-03-10
TWI507049B (en) 2015-11-01

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