JP7350428B2 - Acoustic vibration device and in-vehicle audio device using the vibration device - Google Patents

Acoustic vibration device and in-vehicle audio device using the vibration device Download PDF

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JP7350428B2
JP7350428B2 JP2019122648A JP2019122648A JP7350428B2 JP 7350428 B2 JP7350428 B2 JP 7350428B2 JP 2019122648 A JP2019122648 A JP 2019122648A JP 2019122648 A JP2019122648 A JP 2019122648A JP 7350428 B2 JP7350428 B2 JP 7350428B2
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亮 伊藤
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Alpine Electronics Inc
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Description

本発明は、磁気回路部とコイルとの電磁力で振動伝達部を振動させる音響用の加振装置、および前記加振装置によって車両の内装材が振動させられる車載音響装置に関する。 The present invention relates to an acoustic vibration device that vibrates a vibration transmission section using electromagnetic force between a magnetic circuit section and a coil, and an in-vehicle acoustic device in which interior materials of a vehicle are vibrated by the vibration device.

車載音響装置では、車両の内装材に振動を与えて発音するエキサイタと称される加振装置が使用される。特許文献１に内装材を駆動するスピーカに使用されるエキサイタに関する発明が記載されている。 In-vehicle audio equipment uses a vibration device called an exciter that generates sound by applying vibrations to interior materials of a vehicle. Patent Document 1 describes an invention related to an exciter used in a speaker that drives an interior material.

特許文献１に記載されているエキサイタは、ヨークとマグネットとプレートとが重ねられ、ヨークとプレートとの間にギャップ部が形成された磁気回路が設けられている。車両の内装材に結合されるカプラーに、ボイスコイルを保持するボイスコイルボビンが支持されており、ボイスコイルが前記ギャップ部の内部に位置している。カプラーは板バネによって磁気回路に振動自在に支持されている。このエキサイタは、磁気回路とカプラーとの間に発生する振動が、カプラーから内装材に伝達され、内装材が音圧を発生する。 The exciter described in Patent Document 1 is provided with a magnetic circuit in which a yoke, a magnet, and a plate are stacked on top of each other, and a gap is formed between the yoke and the plate. A voice coil bobbin holding a voice coil is supported by a coupler coupled to an interior material of a vehicle, and the voice coil is located inside the gap portion. The coupler is supported by a leaf spring on the magnetic circuit so as to be able to vibrate. In this exciter, vibrations generated between the magnetic circuit and the coupler are transmitted from the coupler to the interior material, and the interior material generates sound pressure.

特開２００５－１３０１８６号公報Japanese Patent Application Publication No. 2005-130186

車載用の加振装置（エキサイタ）では、カプラー側に端子を設け、ボイスコイルの導線端末を端子に接続し、外部からの配線を端子部に接続することが必要である。しかし、ボイスコイルが磁気回路のギャップ部内で振動するため、導線端末が振動により損傷したりあるいは端子との接続部で断線するおそれがある。特許文献１の図２と図４には、カプラー側に端子部が固定されている構造が記載されているが、この端子部の用途が不明となっており、また配線がどのようにして端子部に接続されているのか記載されてはいない。 In a vehicle-mounted vibration device (exciter), it is necessary to provide a terminal on the coupler side, connect the conductor end of the voice coil to the terminal, and connect external wiring to the terminal part. However, since the voice coil vibrates within the gap portion of the magnetic circuit, there is a risk that the conductor terminal may be damaged by the vibration or disconnected at the connection portion with the terminal. 2 and 4 of Patent Document 1 describe a structure in which a terminal part is fixed to the coupler side, but the purpose of this terminal part is unclear, and how the wiring is connected to the terminal. It is not stated whether it is connected to the section.

本発明は上記従来の課題を解決するものであり、振動伝達部に設けられた端子部を質量部と当たらないように配置して、薄型化を可能とし、さらにコイルの導線端末を空間に浮かせることなく端子部に接続できるようにして、配線部の損傷や断線を防止できる音響用の加振装置および前記加振装置を使用した車載音響装置を提供することを目的としている。 The present invention solves the above-mentioned conventional problems, and makes it possible to reduce the thickness by arranging the terminal part provided on the vibration transmitting part so that it does not touch the mass part, and also allows the terminal of the conductor wire of the coil to float in space. It is an object of the present invention to provide an acoustic vibration device that can be connected to a terminal portion without causing damage to the wiring portion and to prevent damage or disconnection of the wiring portion, and an in-vehicle audio device using the vibration device.

本発明は、後方に位置する質量部と、前記質量部に設けられた磁気回路部と、前方に位置する振動伝達部と、前記質量部と前記振動伝達部とを連結するダンパーと、前記振動伝達部から後方に延びるボビンと、前記ボビンに支持されて前記磁気回路部の磁気ギャップ内に位置するコイルと、を備えた音響用の加振装置において、
前記ダンパーは、前記コイルの巻き中心線と交差する方向に広がって、内周端が前記ボビンに固定され、外周端が前記質量部に固定されており、
前記振動伝達部には、前記コイルに導通する端子部が固定されて、前記端子部が、前記質量部と前後方向に重ならない位置に設けられ、
前記コイルの導線端末が、前記ボビンと前記ダンパーの内周端との間を通過して前記ボビンの表面および前記振動伝達部の後方に向く表面に沿って延び、前記端子部に接続されていることを特徴とするものである。 The present invention provides a mass section located at the rear, a magnetic circuit section provided in the mass section, a vibration transmission section located at the front, a damper that connects the mass section and the vibration transmission section, and a damper that connects the mass section and the vibration transmission section. An acoustic vibration device including a bobbin extending rearward from a transmission section, and a coil supported by the bobbin and located within a magnetic gap of the magnetic circuit section,
The damper extends in a direction intersecting a winding center line of the coil, has an inner peripheral end fixed to the bobbin, and an outer peripheral end fixed to the mass part,
A terminal portion electrically connected to the coil is fixed to the vibration transmission portion, and the terminal portion is provided at a position that does not overlap the mass portion in the front-back direction,
A conductive wire terminal of the coil passes between the bobbin and an inner peripheral end of the damper, extends along the surface of the bobbin and the rearward surface of the vibration transmission section, and is connected to the terminal section. It is characterized by this.

本発明の音響用の加振装置では、前記導線端末は、その少なくとも一部が、前記ボビンの表面および前記振動伝達部の前記表面に接着されていることが好ましい。 In the acoustic vibration device of the present invention, it is preferable that at least a portion of the conductive wire terminal is bonded to the surface of the bobbin and the surface of the vibration transmitting section.

本発明の音響用の加振装置は、前記端子部が、前記巻き中心線を挟む両側に配置されていることが好ましい。 In the acoustic vibration device of the present invention, it is preferable that the terminal portions are arranged on both sides of the winding center line.

次に本発明の車載音響装置は、前記いずれかの振動用の加振装置を備え、
前記振動伝達部が、車両の内装材に固定されていることを特徴とするものである。 Next, the in-vehicle acoustic device of the present invention includes any one of the vibration excitation devices described above,
The vibration transmitting portion is fixed to an interior material of a vehicle.

本発明は、振動伝達部に設けられた端子部が質量部と前後方向で重ならない位置に設けられているため、質量部と振動伝達部とが相対的に振動するときに、端子部が質量部と当たることがない。そのため、質量部と振動伝達部とをできるだけ接近させることができ、装置全体の薄型を実現できる。 In the present invention, since the terminal section provided on the vibration transmitting section is provided at a position that does not overlap the mass section in the front-rear direction, when the mass section and the vibration transmitting section vibrate relative to each other, the terminal section I never come into contact with the department. Therefore, the mass part and the vibration transmitting part can be brought as close as possible, and the entire device can be made thinner.

また、磁気ギャップ内に位置するコイルから延びる導線端末が、ボビンの表面および振動伝達部の後方に向く表面に沿って配線されているため、導線端末が空間で浮くことが少なくなり、また振動の影響も受けにくくなって、配線部の損傷や断線が生じにくくなる。 In addition, since the conductor terminal extending from the coil located within the magnetic gap is routed along the surface of the bobbin and the rearward-facing surface of the vibration transmission section, the conductor terminal is less likely to float in space, and vibrations are reduced. It is also less susceptible to damage and wire breakage.

本発明の音響用の加振装置が車両の内装材に固定された車載音響装置を示す斜視図、A perspective view showing an in-vehicle audio device in which an acoustic vibration device of the present invention is fixed to an interior material of a vehicle, 図１に示す加振装置の分解斜視図、An exploded perspective view of the vibration device shown in FIG. 図１に示す車載音響装置の縦断面図、A vertical cross-sectional view of the in-vehicle audio device shown in FIG.

図１と図３に示すように、本発明の実施形態の車載音響装置（車載スピーカ）１は、音響用の加振装置２と、この加振装置２が取り付けられる車両の内装材３、とを有している。内装材３は、例えばルーフ内装材である。ルーフ内装材は軟質なシートであり、発泡ウレタン樹脂などの発泡樹脂シートで形成されている。なお、内装材３は、ルーフ内装材以外の例えば自動車のドアの内装材やその他の内装材であってもよい。 As shown in FIGS. 1 and 3, a vehicle-mounted audio device (vehicle-mounted speaker) 1 according to an embodiment of the present invention includes an acoustic vibration device 2, and an interior material 3 of a vehicle to which this vibration device 2 is attached. have. The interior material 3 is, for example, a roof interior material. The roof interior material is a soft sheet, and is made of a foamed resin sheet such as foamed urethane resin. Note that the interior material 3 may be, for example, an interior material for an automobile door or other interior materials other than the roof interior material.

音響用の加振装置２および車載音響装置１は、図示下方向（Ｙ１方向）が前方であり、図示上方向（Ｙ２方向）が後方である。内装材３よりも前方（Ｙ１方向）は車室内である。車載音響装置１は、車両の内装材３が主振動体として機能し、内装材３が振動することで音圧が発生し、車室内に向けて発音される。 In the acoustic vibration device 2 and the vehicle-mounted audio device 1, the downward direction (Y1 direction) in the figure is the front, and the upward direction (Y2 direction) in the figure is the rear. The area ahead of the interior material 3 (in the Y1 direction) is inside the vehicle interior. In the vehicle-mounted audio device 1, the interior material 3 of the vehicle functions as a main vibrator, and the interior material 3 vibrates to generate sound pressure, which is emitted toward the interior of the vehicle.

図１と図３に示されるように、加振装置２は質量部１０と振動伝達部２０とを有している。図３に示されるように、質量部１０は、磁気回路部１１と、この磁気回路部１１を保持する保持部材１５とを有している。磁気回路部１１は、円盤形状の磁石１２と、磁石１２の後方（Ｙ２方向）に向く表面が固定される第１ヨーク１３と、磁石１２の前方（Ｙ１方向）に向く表面が固定される円盤形状の第２ヨーク１４とを有している。第１ヨーク１３と第２ヨーク１４は、フェライト系や鉄系の磁性材料で形成されている。第１ヨーク１３の外周部には、前方（Ｙ１方向）に向けて曲げられた部分円筒形状の側壁部１３ａが形成されており、第２ヨーク１４の外周の外面と側壁部１３ａの内面との間に磁気ギャップＧが形成されている。 As shown in FIGS. 1 and 3, the vibration device 2 includes a mass section 10 and a vibration transmission section 20. As shown in FIGS. As shown in FIG. 3, the mass section 10 includes a magnetic circuit section 11 and a holding member 15 that holds the magnetic circuit section 11. The magnetic circuit section 11 includes a disk-shaped magnet 12, a first yoke 13 to which the surface facing the rear (Y2 direction) of the magnet 12 is fixed, and a disk to which the surface facing the front (Y1 direction) of the magnet 12 is fixed. It has a shaped second yoke 14. The first yoke 13 and the second yoke 14 are made of a ferrite-based or iron-based magnetic material. A partially cylindrical side wall portion 13a bent forward (in the Y1 direction) is formed on the outer circumference of the first yoke 13, and the outer surface of the outer circumference of the second yoke 14 and the inner surface of the side wall portion 13a are formed. A magnetic gap G is formed between them.

保持部材１５は円筒形状であり、その内周面に第１ヨーク１３の側壁部１３ａの外周面が保持されて固定されている。保持部材１５は、合成樹脂材料や非磁性合金などの非磁性材料で形成されていることが好ましいが、磁性材料で形成されていてもよい。 The holding member 15 has a cylindrical shape, and the outer circumferential surface of the side wall portion 13a of the first yoke 13 is held and fixed to the inner circumferential surface of the holding member 15. The holding member 15 is preferably made of a non-magnetic material such as a synthetic resin material or a non-magnetic alloy, but may be made of a magnetic material.

振動伝達部２０は、伝達支持体２２と、前端部分が伝達支持体２２に固定されたボビン２１と、ボビン２１の後方端部に巻かれたコイル（ボイスコイル）２３とを有している。伝達支持体２２は、内装材３に固定するカプラーとして機能する。図３に示されるように、コイル２３は磁気回路部１１の磁気ギャップＧ内に位置している。伝達支持体２２は、合成樹脂材料などの非磁性材料で非導電性の材料で形成されている。 The vibration transmission section 20 includes a transmission support 22, a bobbin 21 whose front end portion is fixed to the transmission support 22, and a coil (voice coil) 23 wound around the rear end of the bobbin 21. The transmission support 22 functions as a coupler that is fixed to the interior material 3. As shown in FIG. 3, the coil 23 is located within the magnetic gap G of the magnetic circuit section 11. The transmission support 22 is made of a non-magnetic and non-conductive material such as a synthetic resin material.

図１と図２および図３に、加振装置２の前後方向（Ｙ１－Ｙ２方向）に延びる中心線Ｏが示されている。中心線Ｏは、ボビン２１の中心でコイル２３の巻き中心を通っており、さらに質量部１０の重心を通過している。 A center line O extending in the longitudinal direction (Y1-Y2 direction) of the vibration device 2 is shown in FIGS. 1, 2, and 3. The center line O passes through the winding center of the coil 23 at the center of the bobbin 21, and further passes through the center of gravity of the mass section 10.

振動伝達部２０を構成するボビン２１と、質量部１０を構成する保持部材１５との間にダンパー（サスペンション）３１が設けられている。ダンパー３１は、化学繊維の織布または不織布とフェノール樹脂との複合体などで形成されている。ダンパー３１は、全体がリング形状であり、さらにリング状の複数の突部とリング状の複数の凹部が半径方向に向けて同心円で配置されたコルゲート形状である。ダンパー３１は、中心線Ｏと直交する平面に沿って広がるように配置されており、ダンパー３１の内周端３１ａがボビン２１の外周面に接着されて固定され、ダンパー３１の外周端３１ｂが保持部材１５の下面に接着されて固定されている。 A damper (suspension) 31 is provided between the bobbin 21 that constitutes the vibration transmission section 20 and the holding member 15 that constitutes the mass section 10. The damper 31 is formed of a composite of woven or nonwoven chemical fiber fabric and phenol resin. The damper 31 has a ring shape as a whole, and has a corrugated shape in which a plurality of ring-shaped protrusions and a plurality of ring-shaped recesses are arranged concentrically in the radial direction. The damper 31 is arranged so as to spread out along a plane perpendicular to the center line O, and the inner peripheral end 31a of the damper 31 is bonded and fixed to the outer peripheral surface of the bobbin 21, and the outer peripheral end 31b of the damper 31 is held. It is adhered and fixed to the lower surface of the member 15.

図１と図３に示されるように、振動伝達部２０の伝達支持体２２は、円盤形状のフランジ部２２ａを有し、その中心部に開口部２２ｂが形成されている。開口部２２ｂの周囲に後方（Ｙ２方向）に向けて立ち上がる隆起部２２ｄが形成されており、前記ボビン２１の前方（Ｙ１方向）に向く端部が、隆起部２２ｄの外周部に嵌着されて接着固定されて、ボビン２１が、伝達支持体２２から後方（Ｙ２方向）に向けて立ち上がっている。伝達支持体２２のフランジ部２２ａは、質量部１０の直径よりも大きな直径寸法を有している。伝達支持体２２の外周部は、質量部１０よりも外周側に延びる張出し部となっており、この張出し部に一対の端子部２５が固定されている。端子部２５は導電性の金属板で形成された接続端子であり、前方（Ｙ１方向）に向く基端部が、伝達支持体２２のフランジ部２２ａに埋設されて固定されている。 As shown in FIGS. 1 and 3, the transmission support 22 of the vibration transmission section 20 has a disc-shaped flange 22a, and an opening 22b is formed in the center thereof. A raised part 22d rising rearward (in the Y2 direction) is formed around the opening 22b, and the end of the bobbin 21 facing forward (in the Y1 direction) is fitted onto the outer periphery of the raised part 22d. The bobbin 21 is fixed with adhesive and stands up from the transmission support 22 toward the rear (Y2 direction). The flange portion 22a of the transmission support 22 has a diameter larger than the diameter of the mass portion 10. The outer periphery of the transmission support body 22 is a projecting portion that extends toward the outer periphery of the mass portion 10, and a pair of terminal portions 25 are fixed to this projecting portion. The terminal portion 25 is a connection terminal formed of a conductive metal plate, and a base end portion facing forward (Y1 direction) is embedded and fixed in the flange portion 22a of the transmission support body 22.

一対の端子部２５は、中心線Ｏを挟む両側で、中心線Ｏを中心とするほぼ１８０度の角度で配置されている。それぞれの端子部２５は、振動伝達部２０の伝達支持体２２に形成されたフランジ部２２ａの後方に向く表面２２ｃから後方に向けて立ち上がっている。一対の端子部２５は質量部１０よりも外周側に位置しており、一対の端子部２５と質量部１０は前後方向（Ｙ１－Ｙ２方向）に重なっておらず、前後方向に対向していない。 The pair of terminal portions 25 are arranged on both sides of the center line O at an angle of approximately 180 degrees with the center line O as the center. Each terminal portion 25 stands up rearward from a rearwardly facing surface 22c of a flange portion 22a formed on the transmission support body 22 of the vibration transmission portion 20. The pair of terminal parts 25 are located on the outer peripheral side of the mass part 10, and the pair of terminal parts 25 and the mass part 10 do not overlap in the front-back direction (Y1-Y2 direction) and do not face each other in the front-rear direction. .

図２に示されるように、コイル２３から一対の導線端末２３ａ，２３ｂが延び出ている。導線端末２３ａ，２３ｂはコイル２３を巻き形成している被覆導線の両端部であり、導線端末２３ａ，２３ｂの一方がコイル２３の巻き始端であり、他方がコイル２３の巻き終端である。導線端末２３ａ，２３ｂは、コイル２３から前方（Ｙ１方向）に向けて中心線Ｏと平行に延び出て、ボビン２１の表面（外周面）２１ａに沿って延びている。さらに、振動伝達部２０の後方（Ｙ２方向）に向く表面である伝達支持体２２のフランジ部２２ａの表面２２ｃに沿って、中心線Ｏに対して半径方向に向けて直線方向に延びている。導線端末２３ａ，２３ｂのそれぞれの先端部は、被覆層が除去されて、端子部２５に巻き付けられるなどして、導線端末２３ａ，２３ｂのそれぞれと一対の端子部２５，２５のそれぞれとが半田付けされている。 As shown in FIG. 2, a pair of conductor terminals 23a and 23b extend from the coil 23. The conductive wire terminals 23a and 23b are both ends of the coated conductive wire around which the coil 23 is wound.One of the conductive wire terminals 23a and 23b is a winding start end of the coil 23, and the other is a winding end of the coil 23. The conductor terminals 23a and 23b extend forward (in the Y1 direction) from the coil 23 in parallel to the center line O, and extend along the surface (outer peripheral surface) 21a of the bobbin 21. Furthermore, it extends linearly in the radial direction with respect to the center line O along the surface 22c of the flange portion 22a of the transmission support body 22, which is the surface facing the rear (Y2 direction) of the vibration transmission portion 20. The coating layer is removed from the tip of each of the conductor terminals 23a, 23b, and the tip is wound around the terminal section 25, so that each of the conductor terminals 23a, 23b and each of the pair of terminal sections 25, 25 are soldered. has been done.

導線端末２３ａ，２３ｂの少なくとも一部は、ボビン２１の表面２１ａに接着されており、またフランジ部２２ａの表面２２ｃに接着されている。好ましくは、導線端末２３ａ，２３ｂが、全長で。あるいはほぼ全長で、ボビン２１の表面２１ａとフランジ部２２ａの表面２２ｃに接着されて固定されている。図３に示すように、ダンパー３１の内周端３１ａがボビン２１の表面２１ａに接着されて固定されているので、ボビン２１の表面２１ａに沿って前方に向けて延びる導線端末２３ａ，２３ｂは、ダンパー３１の内周端３１ａとボビン２１の表面２１ａとの間の接合部を通過して、フランジ部２２ａに向けて延びている。 At least a portion of the conductive wire ends 23a, 23b is bonded to the surface 21a of the bobbin 21, and is also bonded to the surface 22c of the flange portion 22a. Preferably, the conductor ends 23a, 23b are of full length. Alternatively, almost the entire length is bonded and fixed to the surface 21a of the bobbin 21 and the surface 22c of the flange portion 22a. As shown in FIG. 3, since the inner peripheral end 31a of the damper 31 is bonded and fixed to the surface 21a of the bobbin 21, the conductor terminals 23a, 23b extending forward along the surface 21a of the bobbin 21 are It passes through the joint between the inner circumferential end 31a of the damper 31 and the surface 21a of the bobbin 21, and extends toward the flange portion 22a.

次に、本発明の実施形態の加振装置２を使用した車載音響装置（スピーカ）１の発音動作を説明する。 Next, the sounding operation of the vehicle-mounted audio device (speaker) 1 using the vibration device 2 according to the embodiment of the present invention will be described.

コイル２３にボイス電流が与えられると、磁気回路部１１の磁気ギャップＧ内のコイル２３に作用する磁界と、ボイス電流とで励起される電磁力によって、質量部１０と振動伝達部２０とが、前後方向（Ｙ１－Ｙ２方向）において互いに反発する方向へ振動しようとする。このときの質量部１０の振動の反力によるエネルギーが、振動伝達部２０の伝達支持体２２から車両の内装材３に与えられ、内装材３が加振されて音圧が発生し、内装材３の前方の車室内に音が与えられる。 When a voice current is applied to the coil 23, the mass part 10 and the vibration transmission part 20 are caused to They try to vibrate in directions that repel each other in the front-rear direction (Y1-Y2 direction). At this time, the energy due to the reaction force of the vibration of the mass part 10 is applied from the transmission support 22 of the vibration transmission part 20 to the interior material 3 of the vehicle, the interior material 3 is vibrated, sound pressure is generated, and the interior material 3 is vibrated. Sound is given to the interior of the vehicle in front of No.3.

振動しているコイル２３からは導線端末２３ａ，２３ｂが延び出ているが、この導線端末２３ａ，２３ｂは、ダンパー３１の内周端３１ａとボビン２１の表面２１ａとの接合部を通過して、ボビン２１の表面２１ａに沿って少なくとも一部が表面２１ａに接着されている。また、導線端末２３ａ，２３ｂは、振動伝達部２０の後方（Ｙ２方向）に向く表面すなわち伝達支持体２２のフランジ部２２ａの表面２２ｃに沿って半径方向に延び、導線端末２３ａ，２３ｂは少なくとも一部がフランジ部２２ａの表面２２ｃに接着されて、端子部２５に接続されている。 Conductor terminals 23a and 23b extend from the vibrating coil 23, and these conductor terminals 23a and 23b pass through the joint between the inner peripheral end 31a of the damper 31 and the surface 21a of the bobbin 21, and At least a portion of the bobbin 21 along the surface 21a is bonded to the surface 21a. Further, the conductor terminals 23a, 23b extend in the radial direction along the rearward (Y2 direction) surface of the vibration transmitting section 20, that is, the surface 22c of the flange section 22a of the transmission support 22, and the conductor terminals 23a, 23b extend at least in one direction. is bonded to the surface 22c of the flange portion 22a and connected to the terminal portion 25.

コイル２３から端子部２５にかけて、導線端末２３ａ，２３ｂが空中に浮くことがなく、ボビン２１とダンパー３１との接合部も通過して延びているため、コイル２３が振動するときに、導線端末２３ａ，２３ｂが単独で動くことなく固定された状態を維持する。そのため、振動により導線端末２３ａ，２３ｂが損傷することがなく、導線端末２３ａ，２３ｂと端子部２５との接続部に大きな力が作用することがなく、断線が生じる可能性がほとんどなくなる。 From the coil 23 to the terminal part 25, the conductor ends 23a and 23b do not float in the air and extend through the joint between the bobbin 21 and the damper 31, so when the coil 23 vibrates, the conductor ends 23a and 23b do not float in the air. , 23b remain fixed without moving independently. Therefore, the conductor terminals 23a, 23b are not damaged by vibration, and no large force is applied to the connection between the conductor terminals 23a, 23b and the terminal portion 25, and the possibility of wire breakage is almost eliminated.

図３に示すように、内装材３に固定されている伝達支持体２２のフランジ部２２ａは、質量部１０から側方に張り出す張出し部を有し、端子部２５，２５はこの張出し部に固定されている。フランジ部２２ａから後方（Ｙ２方向）に向けて突出する端子部２５，２５が、質量部１０と前後方向（Ｙ１－Ｙ２方向）に重なっておらず、前後方向に対向していないため、質量部１０と振動伝達部２０とが前後方向に相対的に振動する際に、質量部１０と端子部２５とが当たることがない。そのため、質量部１０と振動伝達部２０とを前後方向に接近させて配置することができ、加振装置２を薄型化できる。 As shown in FIG. 3, the flange portion 22a of the transmission support 22 fixed to the interior material 3 has a projecting portion that projects laterally from the mass portion 10, and the terminal portions 25, 25 are attached to this projecting portion. Fixed. The terminal parts 25, 25 that protrude rearward (Y2 direction) from the flange part 22a do not overlap the mass part 10 in the front-rear direction (Y1-Y2 direction) and do not face each other in the front-rear direction. When the vibration transmission section 10 and the vibration transmitting section 20 vibrate relative to each other in the front-rear direction, the mass section 10 and the terminal section 25 do not come into contact with each other. Therefore, the mass part 10 and the vibration transmitting part 20 can be arranged close to each other in the front-rear direction, and the vibration device 2 can be made thinner.

振動伝達部２０では、一対の端子部２５が、中心線Ｏを挟む両側に配置されているため、コイル２３から延び出る一対の導線端末２３ａ，２３ｂを互いに独立した箇所に配線することができ、導線端末２３ａ，２３ｂどうしの絡みなども生じない。また振動伝達部２０において金属製の端子部２５が、中心線Ｏの両側に配置されているため、振動伝達部２０の質量の偏りも防止でき、振動伝達部２０の振動特性を良好にできる。 In the vibration transmission section 20, the pair of terminal sections 25 are arranged on both sides of the center line O, so that the pair of conductor terminals 23a and 23b extending from the coil 23 can be wired to mutually independent locations. The conductor terminals 23a and 23b do not get entangled with each other. Further, since the metal terminal portions 25 are arranged on both sides of the center line O in the vibration transmitting portion 20, it is possible to prevent the mass of the vibration transmitting portion 20 from becoming uneven, and the vibration characteristics of the vibration transmitting portion 20 can be improved.

１ 車載音響装置
２ 加振装置
３ 内装材
１０ 質量部
１１ 磁気回路部
１２ 磁石
１５ 保持部材
２０ 振動伝達部
２１ ボビン
２１ａ 表面
２２ 伝達支持体
２２ａ フランジ部
２２ｃ 表面
２３ コイル
２３ａ，２３ｂ 導線端末
３１ ダンパー
３１ａ 内端部
３１ｂ 外端部 1 Vehicle-mounted acoustic device 2 Vibration device 3 Interior material 10 Mass portion 11 Magnetic circuit portion 12 Magnet 15 Holding member 20 Vibration transmission portion 21 Bobbin 21a Surface 22 Transmission support 22a Flange portion 22c Surface 23 Coils 23a, 23b Conductor terminals 31 Damper 31a Inner end 31b Outer end

Claims (4)

後方に位置する質量部と、前記質量部に設けられた磁気回路部と、前方に位置する振動伝達部と、前記質量部と前記振動伝達部とを連結するダンパーと、前記振動伝達部から後方に延びるボビンと、前記ボビンに支持されて前記磁気回路部の磁気ギャップ内に位置するコイルと、を備えた音響用の加振装置において、
前記ダンパーは、前記コイルの巻き中心線と交差する方向に広がって、内周端が前記ボビンに固定され、外周端が前記質量部に固定されており、
前記振動伝達部には、前記コイルに導通する端子部が固定されて、前記端子部が、前記質量部と前後方向に重ならない位置に設けられ、
前記コイルの導線端末が、前記ボビンと前記ダンパーの内周端との間を通過して前記ボビンの表面および前記振動伝達部の後方に向く表面に沿って延び、前記端子部に接続されていることを特徴とする音響用の加振装置。 A mass section located at the rear, a magnetic circuit section provided in the mass section, a vibration transmission section located at the front, a damper connecting the mass section and the vibration transmission section, and a damper located at the rear from the vibration transmission section. An acoustic vibration device comprising: a bobbin extending from the bobbin; and a coil supported by the bobbin and positioned within the magnetic gap of the magnetic circuit section,
The damper extends in a direction intersecting a winding center line of the coil, has an inner peripheral end fixed to the bobbin, and an outer peripheral end fixed to the mass part,
A terminal portion electrically connected to the coil is fixed to the vibration transmission portion, and the terminal portion is provided at a position that does not overlap the mass portion in the front-back direction,
A conductive wire terminal of the coil passes between the bobbin and an inner peripheral end of the damper, extends along the surface of the bobbin and the rearward surface of the vibration transmission section, and is connected to the terminal section. An acoustic vibration excitation device characterized by: 前記導線端末は、その少なくとも一部が、前記ボビンの表面および前記振動伝達部の前記表面に接着されている請求項１記載の音響用の加振装置。 2. The acoustic vibration device according to claim 1, wherein at least a portion of the conductive wire terminal is bonded to the surface of the bobbin and the surface of the vibration transmitting section. 前記端子部は前記巻き中心線を挟む両側に配置されている請求項１または２記載の音響用の加振装置。 3. The acoustic vibration device according to claim 1, wherein the terminal portions are arranged on both sides of the winding center line. 請求項１ないし３のいずれかに記載の振動用の加振装置を備え、
前記振動伝達部が、車両の内装材に固定されていることを特徴とする車載音響装置。 comprising the vibration excitation device according to any one of claims 1 to 3 ,
An in-vehicle audio device characterized in that the vibration transmitting section is fixed to an interior material of a vehicle.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000308849A (en) 1997-06-30 2000-11-07 Tokin Corp Vibration actuator for generating sound and lowfrequency vibration
JP2001121082A (en) 1999-10-28 2001-05-08 Tokin Corp Vibration actuator
JP2012109669A (en) 2010-11-15 2012-06-07 Minebea Co Ltd Speaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11155195A (en) * 1997-11-20 1999-06-08 Sony Corp Loudspeaker system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000308849A (en) 1997-06-30 2000-11-07 Tokin Corp Vibration actuator for generating sound and lowfrequency vibration
JP2001121082A (en) 1999-10-28 2001-05-08 Tokin Corp Vibration actuator
JP2012109669A (en) 2010-11-15 2012-06-07 Minebea Co Ltd Speaker

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