JP2014045514A - Earphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an earphone from falling easily.SOLUTION: An earphone that can be attached tightly to an ear, and can maintain excellent attachment state is provided. An auricula insertion body 16 is provided on the outer peripheral face of a speaker housing 14 for housing the speaker unit 31 of an earphone. The auricula insertion body 16 is formed continuously for the speaker housing 14, and includes a protrusion 33 formed to protrude outward from the outer peripheral face of a speaker housing 14, as a portion of the auricula insertion body 16. The auricula insertion body 16 includes a side face facing a tragus 114 or an antitragus 115, and the speaker housing 14 is placed between the tragus 114 and antitragus 115 of an auricula 110.

Description

  The present invention relates to an inner-type earplug earphone.

  2. Description of the Related Art Conventionally, an inner type small and light earplug type earphone that is inserted into an external auditory canal together with headphones is known. FIG. 1 is a schematic diagram for explaining a state in which a conventional inner-type earphone 120 is mounted on a user's auricle 110. As shown in FIG. 1, the auricle 110 generally has an auricle 111, a pair of rings 112, a concha cavity 113, a tragus 114, a pair of beads 115, a notch 116 (notch at the lower end of the auricle 110), and the earlobe. 117, and a raised part and a sink part composed of a ring leg 118 and the like. In the inner type earphone, a housing portion of the earphone main body is usually disposed between the tragus 114 and the counter jewel 115, and an ear plug portion integrally formed with the main body portion is inserted into the external ear canal 119, thereby allowing the auricle to be pinched. 110. The inserted ear plug portion is flexibly deformed in the external auditory canal 119 to enhance the adhesion between the earphone and the auricle and the feeling of wearing.

  In the inner-type earplug type earphone, the size and shape of the pearl 115 of the auricle 110 of each user who uses the earphone, the thickness of the notch 116, and the like greatly affect the mounting stability. Therefore, conventionally, a technique related to an earphone that prevents dropping by forming an auricle support member on an earphone main body that houses a speaker unit (SP unit) is known.

  For example, by forming an auricle support portion with a loop-shaped elastic structure (loop support structure) member in a housing (speaker unit housing) that houses the speaker unit, the housing is attached to the auricle side. A technique for preventing the earphone from falling off the auricle side during use is disclosed (for example, see Patent Document 1). The earphone disclosed in Patent Document 1 allows an auricle support member formed of a loop-like elastic elastic support piece (loop support structure) to flexibly contact a corresponding position in the auricle. ing.

  Further, a technology related to an earphone is disclosed in which a sound conduit extends in a direction intersecting at a constant inclination angle with respect to the central axis of the housing, and the width can be increased without bringing the housing into contact with the tragus. (For example, refer to Patent Document 2). The earphone disclosed in Patent Document 2 is intended to increase the diameter of a diaphragm in a driver unit housed in a housing, and to improve the wearing feeling.

JP 2006-203420 A JP 2007-189468 A

  However, many conventional earphones may loosen or fall off even if the user exercises lightly due to the weight of the earphone body. In addition, the earphone has a large outer diameter to prevent loosening, and the user may feel uncomfortable wearing.

  For example, in the conventional technique described in Patent Document 1, it is necessary to form an elastic support piece having a loop support structure by covering a speaker housing with a resin member. In this case, there is a problem that the size of the earphone is increased because the thickness of the resin member for the loop support structure is added as well as the outer diameter of the speaker housing portion that houses the speaker unit. For this reason, after the user inserts the earphone into the auricle, the earphone may easily fall off due to an external force acting on the earphone, for example, the cord being pulled.

  Moreover, in the prior art described in Patent Document 2, since the earphone is held only by the elastic pinna attachment body configured in the sound conduit of the earphone, an external force such as a cord being pulled acts on the earphone. Similarly, there is a problem that the earphone easily falls off.

  This invention is made | formed in view of the situation mentioned above, and makes it an example of a subject to solve the above problems, and provides an earphone which can solve these subjects. Objective.

  In order to solve the above-described problem, an earphone according to the first aspect of the present invention includes a speaker main body, a speaker housing, a sound conduit, and an earplug, and a protrusion on the outer peripheral side surface of the speaker housing. The auricle insert is provided on the protrusion, and the auricle insert has a shape that can contact the ear of the auricle.

In order to solve the above-described problem, an earphone according to a second aspect of the present invention includes a speaker main body portion and a speaker housing portion, and a protrusion is provided on an outer peripheral side surface of the speaker housing portion. The protrusion is provided with an auricle insert, and the auricle insert has a shape capable of contacting a pinnacle of the auricle.
In order to solve the above-described problem, an earphone according to a third aspect of the present invention includes a speaker housing portion, and a protrusion is provided on an outer peripheral side surface of the speaker housing portion. Is provided with the auricle insert, and the auricle insert has a shape capable of coming into contact with a pearl of the auricle.

It is a schematic diagram for demonstrating the state which mounted | wore the user's pinna 120 with the conventional inner type earphone 120. FIG. It is a perspective view which shows the external appearance of the earphone which concerns on one Embodiment of this invention. FIG. 3 is an exploded perspective view for explaining in detail the structure of each part constituting the earphone according to the embodiment of the present invention shown in FIG. 2. It is a perspective view for demonstrating in detail the formation condition of the pinna insert 16 and the speaker unit 31 of the earphone which concerns on one Embodiment of this invention shown in FIG. FIG. 4 is a perspective view for explaining in detail the structure of a lid portion 141 of a speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. 3. FIG. 4 is a perspective view for explaining in detail the structure of a tubular portion 142 of the speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. 3. FIG. 4 is a perspective view for explaining in detail the structure of a cord lead-out portion 15 fitted to a tubular portion 142 of the speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. 3. FIG. 4 is a perspective view for explaining in detail the structure of a bottom surface part 143 of the speaker housing part 14 of the earphone according to the embodiment of the present invention shown in FIG. 3. FIG. 4 is a perspective view for explaining in detail the structure of an auricle insert 16 of an earphone according to an embodiment of the present invention shown in FIG. 3. FIG. 10 is a perspective view for explaining in detail the structure of the auricle insert 16 of the earphone according to the embodiment of the present invention shown in FIG. 9. It is an image figure which shows the mounting state of an earphone when the earphone which concerns on one Embodiment of this invention shown in FIG. 2 is inserted in the user's pinna 110. FIG. 1 is an external view of a portable audio player 100 including an earphone 150 according to an embodiment of the present invention.

  Hereinafter, preferred embodiments of an earphone according to the present invention will be described with reference to the drawings.

  FIG. 2 is a perspective view showing an appearance of an earphone according to an embodiment of the present invention. 2A is a perspective view of an earphone according to an embodiment of the present invention, and FIG. 2B is a perspective view of the earphone viewed from an angle different from that of FIG. Further, in each drawing of FIG. 2, an earphone 11 for the right ear and an earphone 12 for the left ear are shown.

  As shown in FIG. 2, the earphone according to the present embodiment includes an earplug 13, a speaker housing portion 14, a cord lead-out portion 15, and an auricle insert 16. As shown in FIG. 2, the earphone is not easily dropped from the user's auricle by both the earplug 13 and the auricle insert 16 having a function as an attachment to the auricle, and is uncomfortable. It can be held on the auricle side without giving a comfortable wearing feeling. Further, the auricle insert 16 is formed by covering a protrusion (protrusion 33 described later) protruding outside from the speaker housing 14 with an elastic member.

  Hereinafter, the structure of the earphone according to the embodiment shown in FIG. 2 will be described in detail.

  FIG. 3 is an exploded perspective view for explaining in detail the structure of each part constituting the earphone according to the embodiment of the present invention shown in FIG. As shown in FIG. 3, the speaker housing portion 14 is a housing that houses the speaker unit 31 that is the speaker body portion, and includes three members, a lid portion 141, a cylindrical portion 142, and a bottom surface portion 143. Yes. As shown in FIG. 3, the lid 141 constituting the speaker housing 14 is arranged on the acoustic radiation side of the speaker unit 31 (the x direction side that is the central axis direction of the speaker unit 31 shown in FIG. 3). Further, the cylindrical portion 142 covers the outer peripheral portion of the speaker unit 31, and the bottom surface portion 143 is disposed to face the lid portion 141.

  In the present embodiment, as shown in FIG. 3, the speaker unit 31 is provided with an annular voice coil housing portion having a concave cross-sectional shape at the outer peripheral edge of a diaphragm 31a formed in a dome shape, An edge is integrated with the outer peripheral edge of the coil housing portion. A voice coil is accommodated in the voice coil accommodating portion. Note that the speaker unit 31 having the structure shown in FIG. 3 is an example of a speaker unit accommodated in the speaker casing 14 of the earphone according to the present invention, and can be accommodated in the speaker casing 14. For example, the structure of the speaker unit is not limited to this.

  The lid portion 141 of the speaker housing portion 14 defines an opening (sound guide 141a described later) through which sound waves radiated from the speaker unit 31 pass and a sound wave that has passed through the opening (sound guide 141a). A sound conduit 32 for guiding in a direction (y-axis direction which is the central axis direction of the sound conduit 32 shown in FIG. 3) is formed. The central axis of the cylindrical part 142 of the speaker housing part 14 is substantially the same as the y axis. In the present embodiment, the x-axis direction and the y-axis direction in FIG. 3 intersect at a certain angle. The earplug 13 includes a cylindrical portion (not shown) for communicating with the sound conduit 32 inside, and the outer peripheral portion 13a is formed to be elastically deformable. The earplug 13 is made of an elastic member such as silicon or rubber, for example. The opening (sound guide 141a) on the ear plug 13 side of the sound conduit 32 is provided with a lip 32a, and the lip 32a is a cylindrical portion (not shown) provided inside the ear plug 13 and serving as a stopper. Configured to engage.

  Also, an acoustic filter 34 is held between the earplug 13 and the sound conduit 32 to adjust the sound quality and prevent dust and the like from entering, and the sound wave emitted from the speaker unit 31 is the acoustic filter. 34 is emitted to the outside. In this embodiment, the acoustic filter 34 is provided in the sound conduit 32. However, the arrangement position of the acoustic filter is not limited to the tip position of the sound conduit 32, and the sound conduit 32 is provided. The proximal end portion or the intermediate portion of the base plate may be used.

  In addition, a protrusion 33 for forming the auricle insert 16 formed of an elastic member is integrally formed on a part of the outer peripheral side surface of the lid 141. As shown in FIG. 3, the protruding portion 33 is formed in a flat plate shape having a substantially trapezoidal flat surface portion 33 a whose width increases from the speaker housing portion 14 toward the outside. As a result, when the projection 33 is embedded in an opening (opening 165 described later) formed in the auricle insert 16 during connection with the auricle insert 16, The fitting of the opening 33c and the protrusion formed in the opening 165 of the auricle insert 16 (protrusion 166 of the auricle insert 16 described later) is strengthened so that the earphone is less likely to fall off the user's auricle. It is possible to make it.

  FIG. 4 is a perspective view for explaining in detail the formation status of the auricle insert 16 and the speaker unit 31 of the earphone according to the embodiment of the present invention shown in FIG. FIG. 4A shows a part of the lid 141 and the tubular portion 142 before the auricle insert 16 and the speaker unit 31 are mounted. In FIG. 4, the earplug 13 is located on the front side (acoustic radiation side). In the present embodiment, the projection 33 of the speaker housing 14 is placed in advance in a mold of the auricle insert 16 in, for example, a space provided inside the mold, and an elastic member is placed in this space. The auricle insert 16 is integrally formed with the speaker casing 14 by insert molding formed by filling. FIG. 4B is a view showing a state in which the auricle insert 16 is insert-molded in the state of FIG. FIG. 4C is a diagram showing a state in which the speaker unit 31 is held (fixed) in the state of FIG. As shown in FIGS. 3 and 4, the speaker unit 31 according to the present embodiment has an edge of a cylindrical opening formed by the end of the lid 141 of the speaker housing 14 and the cylindrical portion 142. Is arranged.

  As shown in FIGS. 2, 3, 4, and the like, the auricle insert 16 is continuously formed integrally with the speaker housing 14 by insert molding, and is externally formed from the outer peripheral side surface of the speaker housing 14. The protrusion 33 formed so as to protrude is embedded. And when the speaker housing | casing part 14 is arrange | positioned between the tragus 114 of the auricle 110 and the rosary 115, it has a surface which opposes the side surface of the opposite wheel 112 of the auricle 110 and the rosary 115. The auricle insert 16 is configured.

  FIG. 5 is a perspective view for explaining in detail the structure of the lid portion 141 of the speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. 3. 5A is a perspective view of the lid portion 141 of the speaker housing portion 14, and FIG. 5B is a perspective view of the lid portion 141 as seen from an angle different from that of FIG. 5A. In addition, in each figure of FIG. 5, the cover part 141 of the speaker housing | casing part 14 of the earphone 11 for right ears is shown.

  As shown in FIG. 5A, the lid 141 is formed with a sound guide 141a as an opening through which a sound wave radiated from the speaker unit 31 is radiated to the outside. A sound conduit 32 for guiding the sound wave that has passed through the (sound guide 141a) in a specified direction is further formed integrally. In the present embodiment, the sound conduit 32 extends in a direction (y-axis direction in FIG. 3) that intersects the central axis (x-axis direction in FIG. 2) of the speaker housing 14 at a certain angle. Yes. Thereby, the speaker housing | casing part 14 can be arrange | positioned on the outer side of the tragus 114, and it can suppress that mounting | wearing of an earphone becomes difficult.

  In addition, with the above-described configuration, the speaker housing portion 14 can be disposed between the tragus 114 and the counter bead 115, and the size of the speaker housing portion 14 can be made relatively large. Accordingly, the speaker unit 31 itself having a large outer diameter can be used, and the output sound pressure characteristics of the speaker can be improved.

  As shown in FIG. 5, the cover portion 141 is formed with two acoustic holes (a first acoustic hole 141 b and a second acoustic hole 141 c). The first acoustic hole portion 141 b is formed on the front surface (earplug 13 side) of the lid portion 141 so as to open a space between the speaker unit 31 and the lid portion 141 on the acoustic radiation side of the speaker unit 31. Yes. The first acoustic hole 141b adjusts the air pressure acting on the diaphragm 31a by communicating the space on the acoustic radiation side surrounded by the diaphragm 31a and the lid 141b of the speaker unit 31 with the outside. ing. In the present embodiment, as shown in FIG. 5 and the like, the first acoustic hole portion 141b is formed in a part of the lid portion 141 close to the joint portion with the cord drawing portion 15 described later. Other positions may be used.

  On the other hand, the second acoustic hole 141c is formed between the speaker unit 31 and the lid 141, and communicates the space on the opposite side of the speaker unit 31 from the acoustic radiation side with the outside. The second acoustic hole portion 141c is formed on the outer peripheral side surface of the lid portion 141 on the bottom surface portion 143 side of the speaker housing portion 14 with respect to the speaker unit 31 when the speaker unit 31 is accommodated in the lid portion 141. ing. The second acoustic hole portion 141 c vibrates by communicating the space surrounded by the speaker unit 31 and the outer peripheral side surface of the lid portion 141 on the opposite side to the acoustic radiation side of the speaker unit 31 and the outside. The air pressure (back pressure) acting on the back surface (surface opposite to the acoustic radiation side) of the plate 31a is adjusted. In the present embodiment, the second acoustic hole 141c is formed in a part of the speaker housing 14 in the vicinity of the protrusion 33 as shown in FIG. It doesn't matter.

  As shown in FIG. 5, in the earphone according to the present embodiment, the first acoustic hole 141 b is formed on the front surface formed on the acoustic radiation side of the lid 141, and the lid is near the protrusion 33. A second acoustic hole 141 c is formed on the outer peripheral side surface of 141. Thereby, since the air pressure in the space on the acoustic radiation side and the opposite side of the speaker unit 31 can be adjusted, desired acoustic characteristics can be adjusted.

  As described above, the second acoustic hole portion 141c is formed on the outer peripheral side surface of the speaker housing portion 14 in the vicinity of the protruding portion 33, thereby facilitating mold molding. Cost can be reduced.

  Further, in order to fit the cylindrical portion 142 and the lid portion 141 at a predetermined position, the lid portion 141 has a positioning portion 141d that is convex toward the inside and is formed on the inner side surface of the lid portion 141. Yes. In addition, the positioning part 141d has a planar shape whose width decreases toward the acoustic radiation direction on the inner side surface 141f of the protrusion 33. In the example shown in the figure, two positioning portions 141d are formed. However, the positioning portions 141d may be changed as necessary, and are not particularly limited. The second acoustic hole 141c is provided between the positioning portions 141d. A stepped portion 141e is formed on the inner side surface 141f of the lid portion 141 between the positioning portion 141d and the second acoustic hole portion 141c. Since this step portion 141e is formed, the inner side surface 141g where the second acoustic hole portion 141c is formed is a position protruding outward with respect to the inner side surface 141f where the positioning portion 141d is formed, A predetermined space surrounded by the stepped portion 141e is formed.

  When the speaker unit 31 is attached to the lid portion 141, the outer peripheral side surface of the speaker unit 31 and the inner side surface 141f where the positioning portion 141d is formed are in contact with each other, while the speaker unit 31 and the second acoustic hole portion 141c are formed. A predetermined gap is formed between the inner side surface 141g. This space is a space surrounded by the stepped portion 141e and communicates with the space on the back side (the opposite side to the acoustic radiation side) of the speaker unit 31. In addition, since the second acoustic hole 141c communicates with the outside, the space on the back side of the speaker unit 31 and the outside can be communicated to adjust the air pressure.

  FIG. 6 is a perspective view for explaining in detail the structure of the cylindrical portion 142 of the speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. 3. 6A is a perspective view of the tubular portion 142 of the speaker housing portion 14, and FIG. 6B is a perspective view of the tubular portion 142 viewed from an angle different from that of FIG. 6A. In addition, in each figure of FIG. 6, the cylindrical part 142 of the speaker housing | casing part 14 of the earphone 11 for right ears is shown. Further, in the present embodiment, as shown in FIG. 6, the outer diameter of the speaker housing portion 14 is suppressed to the extent that the speaker unit 31 can be accommodated to the minimum, and the earphone itself is prevented from becoming large and fixed. In order to maintain strength, the cylindrical portion 142 is formed to have substantially the same thickness in the circumferential direction.

  As shown in FIG. 6, a positioned portion 142 a corresponding to the positioning portion 141 d formed on the lid portion 141 described above is formed on the outer peripheral side surface of the cylindrical portion 142 so as to be concave outward. . The positioned portion 142a positions the tubular portion 142 with respect to the lid portion 141 on which the protruding portion 33 is integrally formed. In the present embodiment, two concave portions are formed on the outer peripheral side surface of the cylindrical portion 142 as the positioned portion 142a. In the present embodiment, two convex portions and concave portions are formed as the positioning portion 141d of the lid portion 141 and the positioned portion 142a of the cylindrical portion 142, respectively, but the number of formed portions is two. It is not limited to a place, and may be one place or three or more places. In the present embodiment, the convex positioning part 141d is formed on the lid part 141, and the concave positioning part 142a is formed on the cylindrical part 142, but the concave positioning part is formed on the lid part 141, A convex positioning portion may be formed on the cylindrical portion 142.

  Further, in order to prevent the thickness of the outer peripheral side surface of the cylindrical portion 142 where the positioned portion 142a is formed from being relatively small, it protrudes inward at a position corresponding to the shape of the positioned portion 142a. In this embodiment, the protruding portion 142g is formed on the outer peripheral side surface of the cylindrical portion 142.

  As described above, the positioned portion 142a corresponding to the positioning portion 141d of the lid portion 141 is formed on the outer peripheral side surface of the cylindrical portion 142. Accordingly, when the lid portion 141 and the tubular portion 142 are coupled, the projection portion 33 can be easily coupled while being positioned with respect to the tubular portion 142.

  A cutout portion 142 e is formed on the outer peripheral portion of the tubular portion 142. The notch 142e is provided between the positioned portion 142a. When attaching the cover part 141 and the cylindrical part 142, the 2nd acoustic hole part 141c is arrange | positioned in the position which faces the notch part 142e. For this reason, the second acoustic hole portion 141c is configured so that the cylindrical portion 142 does not block the space between the back side of the speaker unit 31 and the outside, and the space between the outside and the back side of the speaker unit 31. Can communicate with each other. In the illustrated example, the notch 142e is formed, but the present invention is not limited to this, and the space on the back side of the speaker unit 31 and the outside are communicated with each other via the second acoustic hole 141c. For example, a path through which air enters and exits, such as a through hole, may be formed on the outer peripheral side surface or inside of the cylindrical portion 142.

  Moreover, as shown in FIG. 6, the cylindrical part 142 is formed with a connecting part 142b on the outer peripheral side surface for fitting and attaching an end part of a cord lead part 15 described later. FIG. 7 is a perspective view for explaining in detail the structure of the cord lead-out portion 15 fitted to the tubular portion 142 of the speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. .

  The cord lead-out portion 15 according to the present embodiment includes a substantially cylindrical main body portion 15a and a connection end portion 15b that is integrally formed with the main body portion 15a and engages with the cylindrical portion 142. In addition, a cord insertion opening 15c for inserting a cord (wiring) electrically connected to the speaker unit 31 is formed in the connection end portion 15b. The cord lead-out portion 15 is hollow so that the cord from the speaker unit 31 can be electrically connected to the outside through the inside of the connection end portion 15b and the main body portion 15a through the cord insertion port 15c.

  Here, in order to form the cord lead-out portion 15 in the speaker housing portion 14, in addition to forming the connecting portion 142 b having the opening 142 f in the tubular portion 142 as in the present embodiment, for example, a tubular shape Forming an opening which is a connecting portion with the cord lead-out portion 15 from the portion 142 to the bottom surface portion 143 can be mentioned. When the opening is formed over both the cylindrical portion 142 and the bottom surface portion 143, the strength (rigidity) and the bonding strength at the connecting portion between the cylindrical portion 142 and the bottom surface portion 143 may be reduced. In the present embodiment, an opening 142f is provided in the tubular portion 142, and a reinforcing portion 142c is provided in the vicinity of the opening 142f of the tubular portion 142 and on the bottom surface portion 143 side. The reinforcing portion 142c is provided so as to cover the opening 142f on the bottom surface 143 side of the opening 142f of the tubular portion 142. The reinforcing portion 142c has a relatively large strength (rigidity) and bonding strength of a part of the cylindrical portion 142 whose rigidity is reduced by forming the opening 142f.

  Further, as shown in FIG. 6, the cylindrical portion 142 includes a support portion 142 d for supporting the bottom surface portion of the speaker unit 31 (the surface on the bottom surface portion 143 side of the speaker housing portion 14). It is formed in the shape which protruded inward on the inner peripheral side surface.

  Moreover, by providing this support part 142d, the rigidity of the cylindrical part 142 can be made comparatively large, the rigidity of the entire earphone 11 can be increased, and deformation can be suppressed.

  FIG. 8 is a perspective view for explaining in detail the structure of the bottom surface portion 143 of the speaker housing portion 14 of the earphone according to the embodiment of the present invention shown in FIG. 8A is a perspective view of the bottom surface portion 143 of the speaker housing portion 14, and FIG. 8B is a perspective view of the bottom surface portion 143 viewed from the back side. In addition, in each figure of FIG. 8, the bottom face part 143 of the speaker housing | casing part 14 of the earphone 11 for right ears is shown.

  As shown in FIG. 8, the bottom surface portion 143 is formed with a notch portion 143 a for inserting a cord (wiring) that passes through the cord lead portion 15 described above. The notch 143a is for holding and fixing the connecting end 15b of the cord lead-out portion 15 together with the connecting portion 142b of the tubular portion 142. Further, the bottom surface portion 143 is formed with a concave portion 143b which is a step portion into which the reinforcing portion 142c of the cylindrical portion 142 is inserted. By inserting a convex reinforcing portion 142c formed near the opening of the cylindrical portion 142 into the concave portion 143c, the rigidity at the joint between the cylindrical portion 142 and the bottom surface portion 143 is relatively increased. The cylindrical portion 142 and the bottom surface portion 143 can be fitted.

  FIG. 9 is a perspective view for explaining in detail the structure of the auricle insert 16 of the earphone according to the embodiment of the present invention shown in FIG. 9A is a perspective view of the pinna insert 16 shown in FIGS. 2 and 3 and the like, and FIG. 9B is a perspective view of the pinna insert 16 seen from another direction. In this embodiment, the auricle insert 16 is integrally formed with the speaker housing 14 by insert-molding an elastic member with respect to the protrusion 33 of the lid 141.

  As shown in FIG. 9, in the present embodiment, the auricle insert 16 is formed such that the side surface on the earplug 13 side (acoustic radiation side) and the side surface on the bottom surface portion 143 side (opposite side to the acoustic radiation side) are formed in a planar shape. Has been. Of the side surfaces of the auricle insert 16, the inner side surface (inner side surface 161) that faces the speaker housing portion 14 extends along the outer peripheral side surface of the speaker housing portion 14 and protrudes outward. It is formed so as to be curved. Further, the outer side surface (outer side surface 162) facing the antipods 115 extends along the shape facing the inner side surface 161, specifically, the outer peripheral side surface of the speaker housing 14, and toward the outside. It is formed to curve in a convex shape. That is, the auricle insert 16 is provided along the outer peripheral side surface of the speaker housing 14 and has a substantially crescent-shaped flat plate shape that extends so as to be able to contact the pair of wheels 112 and the beads 115 of the pinna 110. Is formed. And when the speaker housing | casing part 14 is arrange | positioned between the tragus 114 and the rosary 115, the said auricle so that it may have an auricle contact part which contacts the pair wheel 112 of the auricle 110, and the side surface of the rosicle 115 may be provided. The insert 16 is configured.

  Further, the outer side surface 162 has a curved cross-sectional shape. In other words, the corner portion of the outer side surface 162 is formed in a curved shape in consideration of a feeling of wearing with the user's auricle.

  Further, as shown in FIG. 9, the auricle insert 16 has a protruding portion 163 that is formed smaller than the width from the inner side surface 161 to the outer side surface 162 connected to the speaker housing portion 14. The protruding portion 163 has a planar shape that extends from the inner side surface 161 side of the end portion of the auricle insert 16 connected to the speaker housing portion 14 toward the main body portion 15 a of the cord lead-out portion 15. Further, the inner side surface 164 included in the projecting portion 163 is formed in a planar shape different from the inner side surface 161, and in the illustrated example, has a smaller radius than that of the inner side surface 161. In addition, a predetermined interval is provided between the end portion of the protruding portion 163 on the speaker housing portion 14 side and the speaker housing portion 14 or the cord drawing portion 15. Moreover, the protrusion part 163 is formed in flat form.

  In the present embodiment, as shown in FIG. 9, by providing the inner side surface 164, the auricle insert 16 is provided with a hollow that is curved toward the speaker housing portion 14, so that it is between the speaker housing portion 14. A defined interval can be formed. For example, in the example shown in FIG. 9, the thickness of the end portion of the inner side surface 164 formed by providing the curved depression is approximately half that of the end portion of the inner side surface 161. However, the thickness of the protrusion 163 shown in FIG. 9 is an example, and may be thicker or thinner than this. Then, when a part of the auricle insert 16 comes into contact with the tragus 114 or the jewel 115, the auricle 114 of the user's auricle 110 wearing the earphone 11 is added with elasticity to the auricle insert 16. The protrusion 163 of the auricle insert 16 is elastically deformed in correspondence with the shape of the pearl or the like 115 and the wearing state of the earphone and the auricle can be favorably maintained.

  FIG. 10 is a perspective view for explaining in detail the structure of the auricle insert 16 of the earphone according to the embodiment of the present invention shown in FIG. As shown in FIGS. 9 and 10, the auricle insert 16 according to the present embodiment has a width in a direction from the speaker housing portion 14 toward the outside, as the cord drawer portion 15 approaches the cord drawer portion 15. , It is formed in a planar shape whose width is reduced. Moreover, the width | variety of the auricle insertion body 16 in the direction in alignment with the code | cord | chord extraction part 15 from the speaker housing | casing part 14 is equipped with the planar shape which becomes large as it approaches the speaker housing | casing part 14 from the outer side.

  Of the widths of the auricle insert 16 in the direction along the cord lead-out portion 15 from the speaker housing 14, the width 16 a in the vicinity of the outer periphery of the auricle insert 16 is compared with the width 33 b in the vicinity of the outer periphery of the protrusion 33. And is relatively large. As shown in FIG. 10, the auricle insert 16 has a protrusion 163 formed of an elastic member that does not include the protrusion 33 at the end of the auricle insert 16. In the earphone according to the present embodiment, the protruding portion 163 is disposed in the vicinity of the speaker housing portion 14.

  Further, as shown in FIG. 9, the auricle insert 16 has an opening 165, and the projection 33 formed on the lid 141 of the speaker housing portion 14 is arranged, so that the ear The insertion insert 16 can be fixed to the lid 141 of the speaker housing 14. The protrusion 33 is integrally formed so as to continuously protrude from the outer peripheral side surface of the lid 141 as described above. The projection 33 is formed in a substantially inverted trapezoidal flat plate shape whose width in the direction along the cord lead-out portion 15 extends from the speaker housing portion 14 toward the outside from the speaker housing portion 14. Thus, by arranging the projection 33 having a substantially inverted trapezoidal flat plate shape in the opening 165 of the auricle insert 16, the auricle insert 16 embeds the projection 33 and firmly forms the speaker housing portion. 14 can be connected.

  As described above, the earphone 11 according to this embodiment includes the auricle insert 16 formed up to the vicinity of the cord lead-out portion 15. Further, the auricle insert 16 is disposed between the tragus 114 and the antipods 115. Specifically, when the earphone 11 is attached to the auricle 110, the protruding portion 163 that is a part of the auricle insert 16 is formed in a shape that extends to the vicinity of the intercrocus notch 116. For this reason, since the area where the auricle insert 16 and the tragus 114 or the rosicle 115 contact can be made relatively large, the wearing state of the earphone 11 and the auricle 110 can be favorably maintained. Moreover, even if the shape of the user's auricle 110 differs from person to person due to the protrusion 163 of the auricle insert 16 being bent in accordance with the shape of the auricle 110, the earphone 11 according to the present embodiment has the tragus. It is possible to increase the rigidity of the auricle insert 16 that comes into contact with the 114 or the jewel 115 and to provide a good wearing feeling of the earphone 11.

  In addition, as described above, in the present embodiment, the auricle insert 16 is insert-molded with an elastic member. The elastic member fills the opening 33c formed inside the protrusion 33, and the protrusion 33. It is molded so as to cover the outer peripheral side surface. Therefore, in this case, a protrusion 166 corresponding to the shape of the opening 33 c of the protrusion 33 is formed in the opening 165 of the auricle insert 16. And when the projection part 33 formed in the cover part 14 is embed | buried in the pinna insert 16, the said projection part 166 is fitted in the opening part 33c of the projection part 33, and mounting | wearing more firmly is possible. Become.

  As another embodiment of the earphone according to the present invention, an earphone that does not have the opening 33c inside the protrusion 33 and the protrusion 166 of the auricle insert 16 may be adopted. The auricle insert 16 and the protrusion 166 can be firmly fixed.

  In the present embodiment, a thermoplastic elastomer (TPE), which is an elastic material that can be easily processed as plastic, is used as the auricle insert 16, but is not limited thereto. For example, the material of the auricle insert 16 may be a known resin material such as plastic, rubber, or thermosetting resin. In addition, by adopting TPE, the shape design for improving the wearability can be freely made, and the degree of freedom in design becomes high. On the other hand, a known resin material such as an injection-moldable material such as ABS resin can be used for the speaker housing portion 14.

  As described above, in the present embodiment, after the speaker housing portion 14 is formed, the auricle insert 16 is separated from the members constituting the speaker housing portion 14 so as to cover the protrusion 33 of the speaker housing portion 14. An earphone is formed by insert molding with a member. Thus, the outer diameter of the speaker housing portion 14 can be reduced by adopting a configuration in which the auricle insert 16 that is an elastic body is attached around the housing (speaker housing portion). Further, it is possible to use a speaker unit having a relatively large outer diameter while preventing the outer diameter of the speaker housing portion 14 from becoming relatively large.

  As described above, the earphone according to the present embodiment is integrally formed by insert-molding the auricle insert 16 formed of an elastic body into the protrusion 33 of the speaker housing 14, so that the speaker housing 16 The outer diameter mainly depends on the speaker unit 31 and prevents the outer diameter from becoming unnecessarily large. In addition, it is possible to firmly attach the earphone to the ear by housing the earplug 13 of the earphone and the pinna insert 16 in the auricle, and it is possible to prevent the earphone from easily falling off the auricle.

  It is also possible to design the outer diameter of the speaker housing 14 to be larger within a range where the earphone can be securely attached to the ear. In this case, the outer diameter of the speaker unit 31 can be increased, that is, the built-in speaker unit 31 itself can be increased, and the output sound pressure characteristics of the earphone can be improved.

  As described above, in the earphone according to the embodiment of the present invention, one end of the auricle insert 16 that functions as the auricle contact portion is the projection 33 that is covered with the elastic member. It extends to the vicinity of the cord lead-out portion 15 provided on the outer peripheral side surface. Further, in the earphone, when the auricle insert 16 is disposed between the tragus 114 of the auricle 110 and the rosicle 115, the auricle insert 16 has the wheel 112 and the pearl 115 of the auricle 110. It is comprised so that it may have a surface which opposes the side surface. FIG. 11 is an image diagram showing a wearing state of the earphone when the earphone according to the embodiment of the present invention shown in FIG. 2 is inserted into the user's auricle 110. Since the auricle insert 16 has a surface opposite to the side surfaces of the pair of rings 112 and the pearl 115 of the auricle 110, the contact area between the auricle insert 16 and the crow 114 or the pearl 115 is made relatively large. Thus, it is possible to firmly attach the earphone to the auricle 110 while giving a good wearing feeling to the user.

  Further, the protruding portion 163 of the auricle insert 16 is disposed between the tragus 114 and the jewel 115, and a part of the protruding portion 163 extends toward the earlobe 117 of the jewel 115. For this reason, since the contact area between a part of the protrusions 163 and the jewel 115 is increased, the contact area between the auricle 110 and the auricle insert 16 can be increased, and the earphone can be securely attached to the auricle 110. Can do. Further, if necessary, the protruding portion 163 may be extended to the vicinity of the earlobe 117 of the jewel 115 so that the protruding portion 163 is accommodated in a space formed between the crow 114 and the jewel 115. In this case, the contact area with the tragus 114 or the tragus 115 can be further expanded, and the earphone can be securely attached to the auricle 110.

  In the earphone according to the embodiment of the present invention, in the example shown in FIG. 1, the outer diameter of the earplug 13 and the outer diameter of the speaker housing portion 14 are substantially the same. Thereby, the outer diameter of the speaker housing | casing part 14 is comparatively small rather than the conventional earphone as described in patent documents 1-3. In this way, the earphone is firmly attached to the auricle 110 by preventing the speaker casing 14 from having a relatively large outer diameter and placing the earplug 13 and the auricle insert 16 in the auricle 110. , It is possible to prevent the earphone from easily falling off the auricle 110.

  The earphone may be used in an electronic device such as a portable audio player and a portable video player. FIG. 12 is an external view of a portable audio player 100 including the earphone 150 according to an embodiment of the present invention. The portable audio player 100 includes a portable case 101 made of a resin material or a metal member, various operation switches 103 and a display 104 provided on the front surface 102 of the portable case 101. The portable audio player 100 includes a connector on the bottom surface 107, and can electrically connect a signal generation device in the portable audio player 100 and a signal processing device in another electronic device.

  The earphone 150 is attached to the portable audio player 100 as an external product. The earphone 150 includes a remote controller unit 151, an earphone unit 152, a plug unit 153, and a cord unit 154. The remote controller unit 151 is configured to be able to remotely control the portable audio player 100 via the cord unit 154 by using a small switch, a small monitor, or the like. The remote controller unit 151 is configured to be able to execute, for example, volume adjustment, balance control of the left and right earphone units 152, selection and change of screen display contents, programs or game contents by external operations. Such control can also be performed by the operation switch 103 provided on the front face 102. The earphone unit 152 is configured to convert the audio signal received via the code unit 154 into a sound wave and output the sound.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in its purpose and configuration.

DESCRIPTION OF SYMBOLS 11, 12, 150 Earphone 13 Earplug 14 Speaker housing | casing part 15 Cord extraction | drawer part 15a Main body part 15b Connection end part 15c Cord insertion port 16 Auricular insert 16a Auricular insert width 31 Speaker unit 32 Sound conduit 33 Protrusion 33a Flat portion 33b Width 33c of projection 33 Opening 34 Acoustic filter 100 Portable audio player 141 Cover portion 141a Sound guide 141b First acoustic hole 141c Second acoustic hole 141d Positioning portion 142 Cylindrical portion 142a Positioned portion 142b Connecting portion 142c Reinforcing portion 142d Support portion 142e Notch portion 142f Opening portion 142g Protruding portion 143 Bottom portion 143b Notch portion 143b Recessed portion 151 Remote controller portion 152 Earphone portion 153 Plug portion 154 Cord portion 161, 164 Inner side surface 162 Outer side surface 163 bumps Protruding part 165 Opening part 166 Protruding part

Claims (5)

Has a speaker body, speaker housing, sound conduit, earplugs,
A protrusion is provided on the outer peripheral side surface of the speaker housing,
The protrusion is provided with an auricle insert,
The earphone insert is provided with a shape capable of contacting a pinnacle of an auricle. A speaker body and a speaker housing;
A protrusion is provided on the outer peripheral side surface of the speaker housing,
The protrusion is provided with an auricle insert,
The earphone insert is provided with a shape capable of contacting a pinnacle of an auricle. Having a speaker housing,
A protrusion is provided on the outer peripheral side surface of the speaker housing,
The protrusion is provided with an auricle insert,
The earphone insert is provided with a shape capable of contacting a pinnacle of an auricle.   The earphone according to any one of claims 1 to 3, wherein a projecting portion that projects from the projecting portion is provided at an end portion of the auricle insert. With code,
The earphone according to claim 4, wherein the protrusion extends from the protrusion toward the cord.

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