JP2009069219A - Ear pad with bone conduction speaker, and eyeglasses frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eyeglasses frame which enables a user to easily hear peripheral sounds even through a speaker, and to provide an ear pad attached to the eyeglasses frame. <P>SOLUTION: An ear pad 1 with a bone conduction speaker includes an ear pad body 10 to be put on an ear and a bone conduction speaker 100, and an eyeglasses frame 200 includes the bone conduction speaker 100. The bone conduction speaker 100 transmits sound to an inner ear without an eardrum. Therefore, the user can easily hear peripheral sounds even through the bone conduction speaker 100 provided in the ear pad 1 with the bone conduction speaker or the eyeglasses frame 200. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tip cell with a bone conduction speaker and a spectacle frame including the tip cell with a bone conduction speaker.

  In recent years, spectacle frames that can listen to music while being worn have been proposed. Such a spectacle frame is provided with an air-conducting speaker (air-conducting handset). This air-conducting speaker is a speaker that transmits sound to the inner ear through the eardrum. Therefore, the user of the spectacle frame can listen to music through the eardrum while wearing the spectacle frame.

  However, as described above, the music of the air conduction type speaker is transmitted to the inner ear through the eardrum. Therefore, when listening to music from the air-conducting speaker, the user of the spectacle frame is difficult to hear surrounding sounds such as the voice of another person and the running sound of the vehicle.

  An object of the present invention is to provide a spectacle frame in which surrounding sounds can be easily heard even when listening to sound from a speaker, and a tip cell attached to the spectacle frame.

  The present invention provides, as a first means, a tip cell main body, a bone conduction speaker attached to the tip cell main body, a swingable attachment to the tip cell main body via a shaft member, and abuts on the back side of the ear An ear contact member having a possible ear contact portion; and a flexible member for connecting a predetermined portion forward of a portion of the tip cell body to which the ear contact member is attached and a front end portion of the ear contact portion. A tip cell with a bone conduction speaker comprising an entanglement preventing member.

  A bone conduction speaker is a speaker that can transmit sound to the inner ear without going through the tympanic membrane by being crimped to a predetermined part of the human body such as the auricle. Therefore, the spectacle frame provided with the tip cell with the bone conduction speaker according to the first means can transmit the sound of the bone conduction speaker to the user of the spectacle frame without going through the eardrum. Therefore, even when the user listens to the sound of the bone conduction speaker, the user can easily hear the surrounding sound through the eardrum.

  In addition, when the spectacle frame provided with the bone conduction speaker-attached tip cell according to the first means is attached to the user and the front frame of the spectacle frame is about to fall off, The tip cell with the bone conduction speaker tends to slip up. When the tip cell with the bone conduction speaker is shifted upward, the ear contact portion of the ear pad provided in the tip cell with the bone conduction speaker tends to move upward. When the ear contact part moves upward, the ear contact part tries to rotate in the forward direction around the shaft member. At this time, the force with which the front end portion of the ear contact portion presses the back side of the user's ear increases, and as a result, the relative movement between the ear contact portion and the back side of the user's ear is prevented, and the bone The rise of the leading cell with the conductive speaker is prevented. As described above, when the shift of the tip cell with the bone conduction speaker is prevented, the drop of the spectacle frame is prevented. Therefore, the tip cell with a bone conduction speaker according to the first means can easily hear surrounding sounds and can also prevent the omission of the spectacle frame.

  Moreover, in the tip cell with the bone conduction speaker according to the first means, the predetermined portion in front of the portion of the tip cell body where the ear pad member is attached and the front end portion of the ear contact portion are connected by the entanglement preventing member. Has been. Thus, since the predetermined portion and the front end portion of the ear contact portion are connected by the entanglement preventing member, the space between the front cell body and the front end portion of the ear contact portion is blocked by the entanglement prevention member. Yes. Therefore, when removing the spectacle frame to which the bone conduction speaker-attached tip cell according to the first means is removed, even if the spectacle frame is lifted upward, hair is attached to the attachment site between the tip cell main body and the ear contact portion. Hard to get in. Therefore, in the tip cell with the bone conduction speaker according to the first means, the hair is prevented from being entangled with the attachment portion between the tip cell main body and the ear contact portion. Moreover, since the entanglement preventing member has flexibility and does not hinder the swing of the ear contact portion, it does not hinder the effect of preventing the above-described omission of the spectacle frame. . Therefore, the bone conduction speaker-attached tip cell according to the first means suppresses the entanglement of the hair without inhibiting the above-described effect of preventing the eyeglass frame from falling off.

  Preferably, a support member for attaching the bone conduction speaker to the tip cell main body is provided, and the support member is rotatably attached to the tip cell main body, and is rotatable to the first arm portion. The bone conduction speaker is configured to be attached to the second arm portion.

  In such a preferable configuration, the first arm portion and the second arm portion are rotatably attached. Therefore, in such a preferable configuration, the user can hear the sound of the bone conduction speaker by moving the bone conduction speaker to a position where the sound of the bone conduction speaker can be heard more clearly. Therefore, the spectacle frame including the bone conduction speaker-attached tip cell having such a preferable configuration can transmit the sound of the bone conduction speaker more clearly to the user.

  Moreover, this invention is equipped with the tip cell main body, the support member attached to the said tip cell main body, and the bone conduction speaker attached to the said support member as a 2nd means, The said support member is the said tip cell main body. A first arm portion rotatably attached to the first arm portion and a second arm portion rotatably attached to the first arm portion, wherein the bone conduction speaker is attached to the second arm portion. A tip cell with a bone conduction speaker is provided.

  The tip cell with the bone conduction speaker according to the second means includes the bone conduction speaker, similarly to the tip cell with the bone conduction speaker according to the first means. Therefore, even if the user of the spectacle frame provided with the bone conduction speaker-attached tip cell according to the second means listens to the sound of the bone conduction speaker provided in the spectacle frame, the user can hear the surrounding sound through the eardrum. Can be easily heard. The bone conduction speaker with the bone conduction speaker according to the second means is attached to the body of the tip cell via a support member in the same manner as the preferred structure of the bone conduction speaker with the bone conduction speaker according to the first means. ing. Therefore, the spectacle frame provided with the tip cell with the bone conduction speaker according to the second means can transmit the sound of the bone conduction speaker more clearly to the user.

  Preferably, in the eyeglass frame according to the first means and the second means, the support member rotates the first arm portion with respect to the tip cell main body to thereby position the first arm portion. And a second rotation for adjusting the posture of the second arm steplessly by rotating the second arm portion relative to the first arm portion. It is set as the structure which has a part.

  Multi-stage adjustment means that the posture of the adjustment target (here, the posture of the first arm) can be set to any one posture selected from a plurality of postures. Infinite adjustment means that the posture of the object to be adjusted (here, the posture of the second arm) can be changed continuously to any one posture selected from a myriad of postures. It means that. According to such a preferable configuration, the position of the bone conduction speaker can be roughly adjusted by adjusting the posture of the first arm portion, and the bone conduction speaker can be finely adjusted by adjusting the posture of the second arm portion. Position adjustment can be performed. Thus, since rough position adjustment and fine position adjustment are possible, the bone conduction speaker can be quickly moved to a position desired by the user. In addition, since the posture of the second arm portion to which the bone conduction speaker is attached can be adjusted steplessly, there are few moving members when performing fine position adjustment, and fine position adjustment is performed with a small force. be able to.

  Preferably, in the spectacle frame according to the first means and the second means, the support member has a bone conduction speaker support portion for attaching the bone conduction speaker to the second arm portion, and the bone conduction speaker is The bone conduction speaker has a pressure-bonding surface that transmits a sound to the object by crimping and vibrating the object to which sound is transmitted, and the bone conduction speaker support portion is capable of changing a direction of the pressure-bonding surface. Is configured to be attached to the second arm portion.

  In such a preferable configuration, the direction of the crimping surface can be changed. Therefore, the direction of the pressure-bonding surface can be set such that the adhesion between the pressure-bonding surface and the object that transmits sound is further increased. Examples of the object to which sound is transmitted include the pinna of the user of the spectacle frame provided with the tip cell with the bone conduction speaker having such a preferable configuration. Therefore, the eyeglass frame provided with the tip cell with the bone conduction speaker having such a preferable configuration can crimp the crimping surface to the user's auricle, so that the sound of the bone conduction speaker is transmitted to the user more clearly. be able to.

  Preferably, the bone conduction speaker includes a voice coil, a first magnet disposed inside the voice coil, a second magnet disposed outside the voice coil, and the first magnet and the first magnet. And a vibrating section having a diaphragm on which two magnets are disposed.

  According to such a preferable configuration, the magnets are arranged on both the inside and outside of the voice coil. Therefore, a strong magnetic field is generated around the voice coil. Therefore, according to such a preferable configuration, the diaphragm can be vibrated with a small electric power. Further, according to such a preferable configuration, since a large magnetic field is generated around the voice coil, the vibration of the diaphragm can be changed by changing the current supplied to the voice coil weakly. For this reason, according to such a preferable configuration, high-quality sound can be transmitted with low power.

  Moreover, this invention provides a spectacles frame provided with the tip cell with a bone-conduction speaker of any one of Claim 1 to 6.

  The eyeglass frame preferably has a temple, and the bone conduction speaker-attached tip cell is detachably attached to the temple.

  The present invention can provide a destination cell in which a surrounding sound can be easily heard even when a speaker frame is attached and listening to the sound of a speaker, and a glasses frame including the destination cell.

  Hereinafter, a spectacle frame according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG.1 and FIG.2 is a front perspective view of the tip cell 1 with a bone conduction speaker with which the spectacles frame which concerns on this embodiment is provided. 3 and 4 are rear perspective views of the tip cell 1 with a bone conduction speaker. 5 and 6 are exploded perspective views showing an internal configuration of the tip cell 1 with a bone conduction speaker. FIG. 7 is a front view of the tip cell 1 with a bone conduction speaker. FIG. 8 is a cross-sectional view of the tip cell 1 with a bone conduction speaker shown in FIG. 7A-A. FIG. 9 is a cross-sectional view taken along the line B-B of FIG. 8 of the tip cell 1 with a bone conduction speaker.

  As shown in FIG. 1, the tip cell 1 with a bone conduction speaker is detachably attached to the rear portion of the temple 2. The tip cell 1 with a bone conduction speaker includes a tip cell main body 10, a support member 20, and a bone conduction speaker 100.

The tip cell main body 10 has a straight front part and a rear part curved downward. The rear portion is hung on the back side of the user's ear of the spectacle frame according to the present embodiment. As shown in FIG. 9, a temple insertion hole 11 is formed in the front portion of the tip cell main body 10. The temple insertion hole 11 is opened at the front end of the front cell body 10 and extends rearward from the front end. By inserting / removing the rear part of the temple 2 into / from the temple insertion hole 11, the tip cell 1 with a bone conduction speaker can be attached to and detached from the temple 2.

  As shown in FIG. 9, the tip cell main body 10 has a see-through window 12 for visually recognizing the inside of the temple insertion hole 11 from the outside of the tip cell main body 10. A plurality of such see-through windows 12 are formed along the front-rear direction. By forming a plurality of such see-through windows 12 along the front-rear direction, the insertion amount of the temple 2 rear portion in the temple insertion hole 11 can be confirmed from the outside of the front cell body 10. Therefore, the tip cell 1 with a bone conduction speaker can adjust the insertion amount of the rear portion of the temple 2 while confirming the insertion amount of the rear portion of the temple 2.

  As shown in FIG. 9, the tip cell body 10 has a cord insertion groove 13 into which the cord 3 connected to the bone conduction speaker 100 is inserted. The cord insertion groove 13 has an open bottom surface. A cord fixture 22 for closing the lower portion of the cord insertion groove 13 is attached to the tip cell body 10. The cord fixing tool 22 is formed with two cord hooks 23. The cord fixing tool 22 prevents the cord 3 inserted into the cord insertion groove 13 from hanging downward from the cord insertion groove 13. The cord insertion groove 13 communicates with the rear of the front cell body 10 through a through hole 13 a formed in the rear end portion of the front cell body 10. Further, the cord 3 is connected to a sound source such as a portable music player or a radio, is guided from the sound source into the chord insertion groove 13 through the through hole 13a, and is forward of the chord fixing portion 22 of the chord insertion groove 13. From this portion, it is drawn out of the cord insertion groove 13 and guided to the bone conduction speaker 100. As described above, the cord 3 is inserted into the cord insertion groove 13 so that the cord 3 is prevented from appearing outside the tip cell 1 with the bone conduction speaker.

  The support member 20 is attached to the tip cell main body 10. The support member 20 includes a spring portion, a first rotation portion, a first arm portion 40, a second rotation portion, a second arm portion 50, and a bone conduction speaker support portion.

  As shown in FIG.5 and FIG.6, the 1st rotation part has the cylindrical axis | shaft 15, the rotation cap 33, and the screw 4a. The shaft 15 protrudes outward from the front cell body 10 (the direction opposite to the direction in which the user's head is located when the spectacle frame is attached). The rotation cap 33 is formed in a concave shape having a cylindrical space on the inner side, and covers the shaft 15 from the outer direction. The screw 4 a fixes the rotation cap 33 placed on the shaft 15 to the shaft 15 so as to be rotatable around the shaft 15 with respect to the tip cell body 10.

  Further, the shaft 15 has a gear portion 16 in which a plurality of irregularities are formed along the direction orthogonal to the circumferential direction in the portion on the tip cell main body 10 side. The rotation cap 33 has a protrusion 35 (see FIG. 6) that protrudes radially inward from the inner peripheral surface. When the rotation cap 33 is rotated around the shaft 15, the projection 35 comes into contact with the convex portion of the gear portion 16 and prevents the rotation. The rotating cap 33 has three protrusions 35. Such protrusions 35 are arranged at intervals of 120 °. As described above, the rotation amount of the rotation cap 33 around the shaft 15 can be adjusted in multiple stages by the shaft 15 having the gear portion 16 and the rotation cap 33 having the protrusion 35.

  Further, as shown in FIG. 5, the first rotating portion has a stopper 17 formed at a position a predetermined distance away from the shaft 15 of the tip cell body 10 in the radially outward direction of the shaft 15, and the rotating cap 33. Has a stopper 38 projecting radially outward from the outer peripheral surface. When the rotation cap 33 is rotated by a predetermined amount around the axis 15 with respect to the tip cell main body 10, the stopper 17 and the stopper 38 collide with each other. Therefore, the amount of rotation of the rotation cap 33 relative to the tip cell body 10 is limited to a certain range by the stoppers 17 and 38.

  As shown in FIGS. 5 and 6, the spring portion 30 has one end portion (hereinafter referred to as a ring portion 32) formed in a ring shape, and the other end portion (hereinafter referred to as a bent portion 36) is bent at a substantially right angle. It is formed by a plate-like spring member 31 having elasticity. A metal can be used for the material of the spring member 31. As shown in FIG. 8, the ring portion 32 is embedded in the rotating cap 33, and the bent portion 36 is separated from the rotating cap 33 by a predetermined distance in the radially outward direction of the rotating cap 33 (downward in FIG. 8). . In this way, the ring member 32 is embedded in the rotation cap 33, so that the spring member 31 is formed integrally with the rotation cap 33. The ring part 32 can be embedded in the rotation cap 33 by insert molding or the like. Thus, since the ring portion 32 is embedded in the rotation cap 33 and the spring member 31 and the rotation cap 33 are integrally formed, the bent portion 36 together with the rotation cap 33 has the tip cell body 10. Can rotate around the axis 15. Further, when the bent portion 36 is pushed outward (in the direction of arrow Z in FIG. 8) and bent so that the bent portion 36 is located outward, the spring member 31 returns the bent portion 36 to its original position. An elastic force is generated.

  As shown in FIG. 5, an uneven gear pattern 34 is formed on the inner peripheral edge of the ring portion 32. On the other hand, the bent portion 36 is formed such that a pair of elastic protrusions 37 face each other. The protruding direction of the elastic protruding portion 37 is the thickness direction of the bent portion 36.

  As shown in FIG. 6, the first arm portion 40 has a spring groove 41 and a screw hole 42. A bent portion 36 is inserted into the spring groove 41. The spring groove 41 has a groove width smaller than the protruding direction of the elastic protruding portion 37 of the bent portion 36. Therefore, the bent portion 36 is inserted into the spring groove 41 in a state where the elastic protrusion 37 is compressed. Thus, since the bent portion 36 is inserted into the spring groove 41 in a state where the elastic projection portion 37 is compressed, the first arm portion 40 is fixed to the bent portion 36. Therefore, the 1st arm part 40 is attached to the 1st rotation part via the spring part 30, and is attached to the tip cell main body 10 via the spring part 30 and the 1st rotation part. Further, since the first arm portion 40 is fixed to the bending portion 36 that rotates around the shaft 15 together with the rotation cap 33, the first arm portion 40 together with the rotation cap 33 and the bending portion 36 has a shaft 15 with respect to the tip cell body 10. Can rotate around. As described above, the amount of rotation of the rotation cap 33 around the axis 15 can be adjusted in multiple steps, and therefore the amount of rotation of the first arm 40 around the axis 15 can also be adjusted in multiple steps. Therefore, the posture of the first arm portion 40 can be adjusted in multiple steps as shown in FIG. Moreover, since the amount of rotation of the rotation cap 33 relative to the tip cell body 10 is limited to a certain range by the stoppers 17 and 38, the amount of rotation of the first arm portion 40 relative to the tip cell body 10 is also limited to a certain range. .

  The screw hole 42 is a hole for attaching the link cover 70 to the first arm portion 40 by screwing. The first arm portion 40 has an opening formed on one surface thereof, and is formed in a concave shape so as to accommodate the first rotating portion, the spring portion 30, and the cord 3 drawn out from the cord insertion groove 13. Yes. The ring cover 70 is formed in a plate shape that can close the opening of the first arm portion 40. The ring cover 70 is also formed with a screw hole 71. The screw 4b is inserted into the screw hole 42 of the first arm portion 40 and the screw hole 71 of the ring cover 70, so that the ring cover 70 closes the opening of the first arm portion 40. It is attached to the part 40.

  As shown in FIGS. 5 and 6, the second rotating portion includes a coupling hole 43 formed through a part of the first arm portion 40, a coupling portion 51, and a hook 72 formed in the ring cover 70. And a fixing cap 80. The connecting portion 51 has a circular connecting hole 52 formed inside. A pair of hooks 72 are formed on the ring cover 70, and protrude in the vertical direction with respect to the ring cover 70. 11 is a cross-sectional view taken along the line CC of FIG. As shown in FIG. 11, the tip end portion of the hook 72 (hereinafter referred to as the hooking projection portion 73) is wider than the other portion of the hook 72, and the hooking projection portion 73 and the other portion of the hook 72 are the same. A step is formed. The distance between the pair of hooks 72 is shorter than the distance between the hooking protrusions 73 between the other portions of the hooks 72. The fixing cap 80 has a fixing protrusion 81. As shown in FIG. 11, the width of the distal end portion of the fixed protrusion 81 is larger than the other portions of the fixed protrusion 81 and is longer than the distance between the hook protrusions 73 of the pair of hooks 72.

  As shown in FIG. 1, the second arm portion 50 is rotatably attached to the first arm portion 40 by a hook 72 and a fixing cap 80. Specifically, as shown in FIG. 11, this attachment is performed by inserting a pair of hooks 72 into the coupling hole 43 and the coupling hole 52, and hooking protrusions of the fixing groove 74 formed between the pair of hooks 72. This is done by inserting the fixed protrusion 81 to the back of 73. By attaching the second arm portion 50 to the first arm portion 40 in this way, the second arm portion 50 can rotate around the pair of hooks 72 with respect to the first arm portion 40. .

  Further, the width of the fixed protrusion 81 is longer than the distance between the hooking protrusions 73, and a step is formed between the hooking protrusion 73 and the other part of the hook part 72. Therefore, when the fixed protrusion 81 is inserted deeper than the hook protrusion 73 of the fixed groove 74, the fixed protrusion 81 is caught by a step formed in the hook protrusion 72 and the other part of the hook portion 72. It becomes difficult to come off. Therefore, the second arm portion 50 is firmly attached to the first arm portion 40.

  In addition, since the gear portion is not formed on the hook 72 unlike the shaft 15, the amount of rotation of the second arm portion 50 around the pair of hooks 72 can be adjusted steplessly. Therefore, the posture of the second arm portion 50 can be adjusted steplessly as shown in FIG.

  Furthermore, as shown in FIG. 5, the second rotating portion has a stopper 75 formed on the ring cover 70. Moreover, as for the connection part 51, a part of outer peripheral part is dented and the level | step-difference part 54 is formed in the outer peripheral part. When the second arm 50 is rotated by a predetermined amount around the pair of hooks 72 with respect to the first arm 40, the stopper 75 and the stepped portion 54 collide with each other. Therefore, the rotation amount of the second arm portion 50 relative to the first arm portion 40 is limited to a certain range by the stopper 75 and the stepped portion 54.

  As shown in FIG. 6, the bone conduction speaker support portion includes a spherical groove 53 and a coupling ball 62 connected to the bone conduction speaker 100. The spherical groove 53 is a space for holding the coupling ball 62, and is a spherical space partitioned by four curved walls formed in the second arm portion 50. The bone conduction speaker 100 is attached to the second arm 50 by holding the coupling ball 62 in the spherical groove 53 partitioned by the curved wall of the second arm 50. The coupling ball 62 has a spherical shape, and is rotatable when held in the spherical groove 53. When the coupling ball 62 rotates, the direction of the bone conduction speaker 100 changes in the vertical direction and the front-back direction. Further, as shown in FIG. 8, the coupling ball 62 is formed with a cord lead-out groove 63 for guiding the cord 3 drawn out from the first arm portion 40 to the bone conduction speaker 100.

  As shown in FIGS. 5 and 6, the bone conduction speaker 100 is attached to a housing 60 that is integral with the coupling ball 62. FIG. 12 is a cross-sectional view of the bone conduction speaker 100 showing the internal configuration of the bone conduction speaker 100. FIG. 13 is an exploded cross-sectional view showing the internal configuration of the bone conduction speaker 100. As shown in FIGS. 12 and 13, the bone conduction speaker 100 includes a frame 110, a voice coil 102, a vibration unit 103, a cap 104, and a vibration transmission cushion 105.

  The frame 110 is a cylindrical member that is open on the side opposite to the coupling ball 62 and has a space for accommodating the voice coil 102 and the vibrating portion 103 inside. The opening portion of the frame 110 is closed by a cap 104 in a state where the voice coil 102 and the vibrating portion 103 are accommodated. A ring-shaped protrusion 111 is formed on the inner surface 112 a of the side wall 112 on the coupling ball 62 side of the frame 110. The protruding portion 111 is fixed with the voice coil 102 fitted thereto. The material of the frame 110 is not particularly limited, and a synthetic resin, a nonmagnetic metal material, or the like can be used.

  The voice coil 102 is connected to the cord 3 inserted into the cord drawing groove 63 of the coupling ball 62.

  As shown in FIG. 13, the vibration unit 103 includes a first plate 131, a first magnet 132, a second plate 133, a second magnet 134, a substrate 135, a vibration plate 136, and a fixing pin 137. Have.

  The substrate 135 functions as a yoke. As shown in FIG. 12, the substrate 135 is located on the opposite side of the side wall 112 with the voice coil 102 interposed therebetween. The substrate 135 is a disk-shaped member made of a magnetic metal material such as iron. A ring-shaped protrusion 135 a is formed at a position corresponding to the voice coil 2 on the surface of the substrate 135 on the voice coil 102 side (hereinafter referred to as “one surface”). A first magnet 132 is bonded to the inside of the protrusion 135a on one surface of the substrate 135. On the other hand, a second magnet 134 is bonded to the outside of the protrusion 135a on one surface of the substrate 135. As described above, the first magnet 132 and the second magnet 134 are disposed with the protrusion 135a interposed therebetween, so that the magnet is disposed on both the inner side and the outer side of the voice coil 102. The height of the protrusion 135a can be a height at which a gap is formed between the protrusion 135a and the voice coil 102.

  The first magnet 132 is a flat cylindrical permanent magnet. A first plate 131 is disposed on the surface of the first magnet 132 on the voice coil 102 side. Therefore, the first plate 131 is located inside the voice coil 102. The first plate 131 has a disk shape having the same diameter as the first magnet 132. The material of the first plate 131 is a magnetic metal material such as iron. The first plate 131 functions as a ball piece.

  The second magnet 134 is a flat cylindrical permanent magnet having substantially the same height as the first magnet 132. The second magnet 134 has a through hole 134a (see FIG. 13) penetrating in the height direction at the center. The first magnet 132 is accommodated in the through hole 134a. The second magnet 134 constitutes a magnetic circuit together with the first magnet 132. A second plate 133 is disposed on the surface of the second magnet 134 on the voice coil 102 side. Therefore, the second plate 133 is located outside the voice coil 102. The second plate 133 has a disk shape having the same diameter as the second magnet 134 and having a through hole 133 a having the same diameter as the through hole 134 a of the second magnet 134. The first plate 131 is accommodated in the through hole 133a. The material of the second plate 133 is a magnetic metal material such as iron. The second plate 133 functions as a top plate and generates a strong magnetic field between the second plate 133 and the first plate 131.

  The diaphragm 136 is attached to the surface of the substrate 135 opposite to the voice coil 102 side. FIG. 14 is a plan view of the diaphragm 136. As shown in FIG. 14, the diaphragm 136 includes a central portion 160 having a through hole 136 c penetrating in the thickness direction, a peripheral portion 161 attached to the frame 110, and a plurality of connecting the central portion 160 and the peripheral portion 161. Connecting portion 136a. As shown in FIGS. 12 and 13, the connecting portion 136 a is formed with a bent portion 136 b that is bent in a wave shape or a hook shape. Thus, by forming a plurality of the bent portions 136b, the surface area of the diaphragm 136 that affects the vibration of the diaphragm 136 is increased. As shown in FIG. 14, a total of four connecting portions 136a are formed at 90 ° intervals, but the number and arrangement positions of the connecting portions 136b are not limited. Further, the width of the connecting portion 136a is not limited.

  In addition to the diaphragm 136, through holes 135 c, 132 c, and 131 c are formed at the center positions of the substrate 135, the first magnet 132, and the first plate 131. The through holes 136c, 135c, 132c, and 131c are penetrated by the fixing pin 137, and the diaphragm 136, the substrate 135, the first magnet 132, and the first plate 131 are coaxially formed by the fixing pin 137. They are connected together. As the fixing pin 137, a caulking pin that passes through each of the through holes 136c, 135c, 132c, and 131c and is fixed by caulking can be used. Further, in addition to the caulking pin, a bolt / nut or other coupling tool can be used for the fixing pin 137. As described above, the diaphragm 136, the substrate 135, the first magnet 132, and the first plate 131 can be connected by the fixing pin 137 through the through holes 136c, 135c, 132c, and 131c. Therefore, since the structure for connecting these members is simple, the manufacturing cost of the bone conduction speaker 100 can be kept low.

  As shown in FIG. 12, the cap 104 that closes the opening of the frame 110 is in contact with the diaphragm 136. A notch groove 114 is provided around the opening forming portion 113 that forms the opening of the frame 110 where the cap 104 is closed. The peripheral edge 161 of the diaphragm 136 is fitted into the notch groove 114, and the diaphragm 136 is attached to the frame 110 by this fitting. The cap 104 has a disk-shaped base surface 140 and a protrusion 141 formed on the outer periphery of the base surface 140. The protrusion 141 of the cap 104 is fitted in the notch groove 114 so that the peripheral edge 161 of the diaphragm 136 fitted in the notch groove 114 is pressed against the notch groove 114. The vibration transmission cushion 105 is in close contact with the surface of the base surface 140 of the cap 104 located outside the frame 110.

  A large number of through holes 142 are formed in the base surface 140 of the cap 104 along the circumferential direction. By forming the through hole 142, vibration in the frame 110 is easily transmitted to the vibration transmission cushion 105 through the through hole 142. Further, the vibration transmission cushion 105 is attached to the cap 104 that is in contact with the diaphragm 136. By attaching the vibration transmission cushion 105 in this way, the vibration in the frame 110 is easily transmitted to the vibration transmission cushion 105. Further, the vibration transmission cushion 105 is in close contact with the cap 104. The vibration in the frame 110 is also easily transmitted to the vibration transmission cushion 105 because the vibration transmission cushion 105 is in close contact with the cap 104.

  The vibration transmission cushion 105 functions as a pressure-bonding surface that is pressure-bonded to an object that transmits the sound of the bone conduction speaker. That is, the vibration transmission cushion 105 is pressure-bonded to, for example, an ear of the user of the spectacle frame according to the present embodiment. As described above, the direction of the bone conduction speaker 100 can be changed in the vertical direction and the front-rear direction by rotating the coupling ball 62. Therefore, the direction of the vibration transmission cushion 105 can also be changed in the vertical direction and the front-rear direction. Therefore, the direction of the vibration transmission cushion 105 can be set so that the adhesion between the user's auricle or the like of the eyeglass frame according to the present embodiment and the vibration transmission cushion 105 is increased. Therefore, the eyeglass frame according to the present embodiment can transmit the sound of the bone conduction speaker more clearly to the user.

  In order to prevent the vibration transmission cushion 105 from falling off the cap 104, the vibration transmission cushion 105 may be brought into close contact with the cap 104 using the fixing ring 106 shown in FIG.

  Generation of sound in the bone conduction speaker 100 having the above configuration will be described. When an electric signal is supplied to the voice coil 102 via the cord 3, a magnetic field proportional to the electric signal is generated. This magnetic field interacts with the magnetic field generated between the first plate 131 and the second plate 133, and the vibration unit 103 vibrates relative to the voice coil 102 due to this interaction. As the diaphragm 136 vibrates due to the vibration of the vibration unit 103, vibration corresponding to the sound of the bone conduction speaker 100 (sound corresponding to the electric signal supplied to the voice coil 2) is transmitted to the vibration transmission cushion 105. . By transmitting the vibration to the vibration transmission cushion 105, the vibration of the vibration transmission cushion 105 is transmitted to the user's auricle or the like to which the vibration transmission cushion 105 is crimped.

  In the bone conduction speaker 100, magnets (first magnet 132 and second magnet 134) are arranged on both the inside and outside of the voice coil 102. Therefore, in the bone conduction speaker 100, a large magnetic field is generated between the magnets (between the first magnet 132 and the second magnet 134). Therefore, the bone conduction speaker 100 can vibrate the diaphragm 136 even when the electrical signal supplied to the voice coil 102 is weak. Therefore, the bone conduction speaker 100 can vibrate the diaphragm 136 with a small electric power. In the bone conduction speaker 100, since a large magnetic field is generated between the magnets, the vibration of the diaphragm can be changed by slightly changing the electric signal (electric signal current) supplied to the voice coil 102. it can. For this reason, according to such a preferable configuration, high-quality sound can be transmitted with low power.

  In the bone conduction speaker 100, the first magnet 132 and the second magnet 134 are disposed on the substrate 135 that functions as a yoke, the first plate 131 is disposed on the first magnet 132, and the second plate is disposed on the second magnet 134. 133 is disposed, and the voice coil 102 is located between the first plate 131 and the second plate 133, so that an efficient magnetic circuit can be formed by both magnets. Further, since the bending portion 136b is formed in the diaphragm 136, the surface area of the diaphragm 136 is large. Therefore, in the bone conduction speaker 100, the vibration of the vibration unit 3 is likely to increase, and the vibration corresponding to the sound of the bone conduction speaker 100 is easily transmitted to the vibration transmission cushion 105.

  As described above, the eyeglass frame 200 according to the present embodiment, as shown in FIG. 15, is worn with the tip cell body 10 on the ear and the vibration transmission cushion 105 of the bone conduction speaker 100 is attached to the auricle or the like. By crimping, the sound of the bone conduction speaker 100 can be heard while being worn. The sound of the bone conduction speaker 100 can be heard without going through the eardrum. Therefore, even if the user of the spectacle frame 200 is listening to the sound of the bone conduction speaker 100 included in the spectacle frame, the user can easily hear the surrounding sound through the eardrum.

  Further, the spectacle frame 200 has a first arm portion 40 and a second arm portion 50 attached to be freely rotatable. Therefore, as shown in FIG. 16, the user of the spectacle frame according to the present embodiment moves the bone conduction speaker 100 to a position where the sound of the bone conduction speaker 100 can be heard more clearly, and the sound of the bone conduction speaker 100 is reproduced. I can hear you.

  Further, the spectacle frame 200 is configured to be capable of adjusting the posture of the first arm portion 40 in multiple steps and adjusting the posture of the second arm portion 50 in a stepless manner. Therefore, as shown in FIG. 10 (a), by adjusting the posture of the first arm portion 40, it is possible to roughly adjust the position of the bone conduction speaker 100. As shown in FIG. 10 (b), By adjusting the posture of the second arm part 50, the position of the bone conduction speaker 100 can be finely adjusted. Thus, since rough position adjustment and fine position adjustment are possible, the bone conduction speaker 100 can be quickly moved to a position desired by the user of the spectacle frame 200.

  Further, the spectacle frame 200 is capable of stepless adjustment of the posture of the second arm portion 50 with less members interposed between the bone conduction speaker 100 and the first arm portion 40. Therefore, when the position of the bone conduction speaker 100 is finely adjusted, there are few members to move, and the bone conduction speaker 100 can be moved with a small force. Therefore, the eyeglass frame 200 is easy to finely adjust the position of the bone conduction speaker 100.

  In the spectacle frame 200, the amount of rotation of the first arm 40 with respect to the tip cell body 10 and the amount of rotation of the second arm 50 with respect to the first arm 40 are limited to a certain range. As described above, the amount of rotation of the first arm portion 40 and the second arm portion 50 is limited to a certain range, so that the glasses 3 are prevented from being twisted.

  In addition, when the bent portion 36 of the spring member 31 is pushed outward (arrow Z in FIG. 8) and the bent portion 36 is bent outward, the spectacle frame 200 is bent to the original position. An elastic force is generated in the spring member 31 so as to return to. Therefore, when the spectacle frame 200 is attached to the user and the vibration transmission cushion 105 of the bone conduction speaker 100 is applied to the user's auricle or the like, the bone conduction speaker 100 is pressed outward by the auricle or the like. When the bent portion 36 is located outward, an elastic force is generated in the spring member 31 to return the bent portion 36 to the original position. Therefore, the vibration transmission cushion 105 strongly presses the auricle and the like by this elastic force. Therefore, the eyeglass frame 200 can clearly transmit the sound of the bone conduction speaker 100 to the user by the vibration transmission cushion being crimped to the auricle.

  As shown in FIG. 9, the tip cell 1 with a bone conduction speaker includes an ear pad member 123 and an entanglement preventing member 124. The ear rest member 123 is attached to the tip cell main body 10 via a shaft member 127 so as to be swingable. The ear pad member 123 has an ear contact portion 123a that can contact the back side of the ear, and a swinging portion 123b to which the shaft member 127 is attached. A pin or a screw can be used for the shaft member 127. On the other hand, the entanglement preventing member 124 is flexible and has a predetermined portion 102b in front of the portion 102a to which the ear pad member 123 of the tip cell body 10 is attached and a front end portion 123c of the ear contact portion 123a. Are connected. In the illustrated example, the ear contact portion 123a, the predetermined portion 102b, and the entanglement preventing member 124 are integrally formed.

  In the spectacle frame 200, when the front frame 201 (see FIG. 15) of the spectacle frame 200 is about to slip off while being worn by the user, the tip cell 1 with a bone conduction speaker is mounted together with the rear portion of the temple 2 of the spectacle frame 200. Try to move up. When the tip cell 1 with a bone conduction speaker is shifted upward, the ear contact portion 123a of the ear pad member 123 provided in the tip cell 1 with a bone conduction speaker tends to move upward. When the ear contact portion 123a tries to move upward, the ear contact portion 123a tries to rotate forward (rotate counterclockwise in FIG. 9) around the shaft member 127. At this time, the force with which the front end portion 123c of the ear contact portion 123a presses the back side of the user's ear increases, and as a result, relative movement between the ear contact portion 123a and the back side of the user's ear is prevented. This prevents the tip cell 1 with a bone conduction speaker from slipping up. As described above, when the leading cell 1 with the bone conduction speaker is prevented from rising, the glasses frame 200 is prevented from falling. Therefore, the eyeglass frame 200 has the ear pad member 123, so that the slippage is prevented.

  Further, as shown in FIG. 9, the predetermined portion 102 b and the front end portion 123 c of the ear contact portion 123 a are connected by the entanglement preventing member 124. Therefore, since the predetermined portion 102b and the front end portion 123c of the ear contact portion 123a are connected by the entanglement preventing member 124, the space between the predetermined portion 102b of the front cell body 10 and the front end portion 123c of the ear contact portion 123a is The entanglement preventing member 124 is closed. Therefore, when removing the eyeglass frame 200, even if the temple 2 is lifted upward, it is difficult for hair to enter the attachment portion (the swinging portion 123b) between the tip cell main body 10 and the ear contact portion 123a. Therefore, the entanglement preventing member 124 prevents the hair from being entangled at the attachment site between the tip cell main body 10 and the ear contact portion 123a. In addition, since the entanglement preventing member 124 has flexibility, it does not hinder the swinging of the ear contact portion 123a, so that the effect of preventing the above-described omission of the spectacle frame 200 may be hindered. Absent. Therefore, in the spectacle frame 200, the entanglement preventing member 124 suppresses the hair from being entangled without inhibiting the above-described effect of preventing the omission of the spectacle frame 200.

FIG. 1 is a front perspective view of a tip cell with a bone conduction speaker according to an embodiment. FIG. 2 is a front perspective view of the tip cell with the bone conduction speaker according to the embodiment. FIG. 3 is a rear perspective view of the tip cell with the bone conduction speaker according to the embodiment. FIG. 4 is a rear perspective view of the tip cell with the bone conduction speaker according to the embodiment. FIG. 5 is an exploded perspective view showing the internal configuration of the tip cell with a bone conduction speaker according to the embodiment. FIG. 6 is an exploded perspective view showing the internal configuration of the tip cell with the bone conduction speaker according to the embodiment. FIG. 7 is a front view of a tip cell with a bone conduction speaker according to the embodiment. 8 is a cross-sectional view taken along the line AA in FIG. 9 is a cross-sectional view taken along line BB in FIG. FIG. 10A shows a posture that the first arm can take, and FIG. 10B shows a posture that the second arm can take. 11 is a cross-sectional view taken along the line CC of FIG. FIG. 12 is a cross-sectional view of the bone conduction speaker according to the embodiment. FIG. 13 is an exploded perspective view of the bone conduction speaker according to the embodiment. FIG. 14 is a plan view of the diaphragm according to the embodiment. FIG. 15 is a diagram illustrating a usage state of the eyeglass frame according to the embodiment. FIG. 16 is a diagram illustrating a usage state of the eyeglass frame according to the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tip cell with bone conduction speaker 2 Temple 10 Tip cell main body 20 Support member 40 1st arm part 50 2nd arm part 100 Bone conduction speaker 200 Eyeglass frame

Claims (8)

The destination cell body,
A bone conduction speaker attached to the tip cell body;
An ear pad member that is swingably attached to the tip cell body via a shaft member and has an ear contact portion that can contact the back side of the ear;
Bone conduction characterized by comprising a flexible entanglement preventing member for connecting a predetermined portion forward of a portion of the tip cell body to which the ear pad member is attached and a front end portion of the ear contact portion. Destination cell with speaker. A support member for attaching the bone conduction speaker to the tip cell body;
The support member includes a first arm portion that is rotatably attached to the tip cell body, and a second arm portion that is rotatably attached to the first arm portion,
The bone conduction speaker-attached tip cell according to claim 1, wherein the bone conduction speaker is attached to the second arm portion. The destination cell body,
A support member attached to the tip cell body;
A bone conduction speaker attached to the support member,
The support member includes a first arm portion that is rotatably attached to the tip cell body, and a second arm portion that is rotatably attached to the first arm portion,
The bone conduction speaker-attached tip cell, wherein the bone conduction speaker is attached to the second arm portion. The support member is
A first rotating part that adjusts the posture of the first arm part in multiple stages by rotating the first arm part with respect to the tip cell body;
3. A second rotating part that adjusts the posture of the second arm part steplessly by rotating the second arm part with respect to the first arm part. 4. A tip cell with a bone conduction speaker according to 3. The support member is
A bone conduction speaker support portion for attaching the bone conduction speaker to the second arm portion;
The bone conduction speaker is crimped to an object to transmit sound, and has a crimping surface that transmits sound to the object by vibrating,
The bone conduction speaker according to any one of claims 2 to 4, wherein the bone conduction speaker support portion attaches the bone conduction speaker to the second arm portion so that the orientation of the crimping surface can be changed. Attached cell. The bone conduction speaker is
Voice coil,
A first magnet disposed inside the voice coil; a second magnet disposed outside the voice coil; and a vibration part including a diaphragm in which the first magnet and the second magnet are disposed; The bone conduction speaker-attached tip cell according to any one of claims 1 to 5, characterized by comprising:   An eyeglass frame comprising the tip cell with a bone conduction speaker according to any one of claims 1 to 6. Have temples,
The eyeglass frame according to claim 7, wherein the bone conduction speaker-attached tip cell is detachably attached to the temple.

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