JP6738240B2 - In-vehicle speaker system - Google Patents
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- JP6738240B2 JP6738240B2 JP2016168060A JP2016168060A JP6738240B2 JP 6738240 B2 JP6738240 B2 JP 6738240B2 JP 2016168060 A JP2016168060 A JP 2016168060A JP 2016168060 A JP2016168060 A JP 2016168060A JP 6738240 B2 JP6738240 B2 JP 6738240B2
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Description
本発明は、自動車のドア等に装着されて使用される車載用スピーカシステムに係り、特に、スピーカを支持する支持部材と車両の内装パネルとの間をシールするシール構造に関するものである。 The present invention relates to a vehicle-mounted speaker system mounted on a door of an automobile or the like, and more particularly to a seal structure for sealing between a support member that supports the speaker and an interior panel of the vehicle.
自動車のドア内にスピーカを取り付ける場合、開口部を有する支持部材にスピーカを支持すると共に、内装パネルに設けられたスピーカグリルをスピーカの前面に対向させ、これら支持部材と内装パネルとの間をシールするというシール構造が広く採用されている。 When mounting a speaker in the door of an automobile, the speaker is supported by a supporting member having an opening, and the speaker grill provided on the interior panel is opposed to the front surface of the speaker to seal the supporting member and the interior panel. The seal structure that does is widely used.
この種の車載用スピーカシステムの従来例として、図６に示すように、ドア内のインナーパネル１にスピーカ２の構成部材であるフレーム３の鍔部３ａをブラケット４を介して固定すると共に、内装パネル５の背面にスピーカグリル６を包囲するように環状突起５ａを形成し、この環状突起５ａとフレーム３の鍔部３ａとの間で断面矩形状のクッション部材７を挟持するようにしたものが知られている（例えば、特許文献１参照）。なお、スピーカ２はインナーパネル１に設けられた開口部１ａの内側に配置されており、このスピーカ２は、フレーム３の前面側にエッジを介して弾性的に保持された振動板８や、フレーム３の後面側に支持された磁気回路９等を有している。 As a conventional example of a vehicle-mounted speaker system of this type, as shown in FIG. 6, a flange portion 3a of a frame 3 which is a constituent member of the speaker 2 is fixed to an inner panel 1 inside a door via a bracket 4, and an interior An annular protrusion 5a is formed on the back surface of the panel 5 so as to surround the speaker grill 6, and a cushion member 7 having a rectangular cross section is sandwiched between the annular protrusion 5a and the flange 3a of the frame 3. It is known (for example, refer to Patent Document 1). The speaker 2 is arranged inside the opening 1a provided in the inner panel 1, and the speaker 2 includes a diaphragm 8 elastically held on the front side of the frame 3 via an edge and a frame. 3 has a magnetic circuit 9 supported on the rear surface side.
上記のごとく構成された車載用スピーカシステムは、振動板８の前面から出た音波がスピーカグリル６を透過して車室内に放出されるようになっているが、振動板８の前方空間と振動板８の背面に連通するドア内空間との間がクッション部材７によってシールされているため、振動板８の背面から出た音波がドア内空間を経由して振動板８の前方空間に入り込んでしまうことはなく、振動板８の前面と背面から出た音波どうしの干渉や同期現象に起因する音質の悪化を防止することができる。 In the vehicle-mounted speaker system configured as described above, sound waves emitted from the front surface of the diaphragm 8 are transmitted through the speaker grill 6 and emitted into the passenger compartment. Since the cushion member 7 seals between the inner space of the door communicating with the back surface of the plate 8 and the sound space emitted from the back surface of the diaphragm 8, the sound wave emitted from the back surface of the diaphragm 8 enters the space in front of the diaphragm 8 through the inner space of the door. It is possible to prevent deterioration of sound quality due to interference between sound waves emitted from the front surface and the back surface of the diaphragm 8 and a synchronization phenomenon.
このような車載用スピーカシステムでは、ドア内に設置されている純正品のスピーカをより口径の大きいスピーカに交換することがあり、その場合、内装パネル５をインナーパネル１から取り外した状態で既設のスピーカを新たなスピーカに交換した後、再びスピーカを覆うように内装パネル５をインナーパネル１に取り付ける必要がある。しかしながら、図７に示すように、口径が大きくなったスピーカ２に対して内装パネル５の環状突起５ａの大きさに変化はないため、口径が大きくなったフレーム３の鍔部３ａにクッション部材７を貼着しても環状突起５ａに当接させることができなくなり、そのまま何もシール手段を施さないと、振動板８の前面から出た音波と振動板８の背面からドア内空間を経由して振動板８の前面空間に入り込んだ音波とが干渉し、音質の悪化を招来するという問題が発生する。 In such an in-vehicle speaker system, a genuine speaker installed in the door may be replaced with a speaker having a larger diameter. In that case, the existing speaker panel 5 with the interior panel 5 removed from the inner panel 1 may be replaced. After replacing the speaker with a new speaker, the interior panel 5 needs to be attached to the inner panel 1 so as to cover the speaker again. However, as shown in FIG. 7, since the size of the annular projection 5a of the interior panel 5 does not change with respect to the speaker 2 having a large diameter, the cushion member 7 is provided on the collar portion 3a of the frame 3 having a large diameter. Even if it is attached, it cannot contact the annular protrusion 5a, and if no sealing means is provided as it is, the sound wave emitted from the front surface of the diaphragm 8 and the back surface of the diaphragm 8 will pass through the inner space of the door. As a result, the sound waves that have entered the space in front of the diaphragm 8 interfere with each other, causing a problem that the sound quality deteriorates.
このような場合、インナーパネル１に固定されるブラケット４にフレーム３の鍔部３ａを包囲するように断面矩形状のクッション部材を貼着し、このクッション部材をブラケット４と内装パネル５の内面との間で挟持するというシール構造が考えられる。しかし、クッション部材の一端側が密着される内装パネル５の内面は必ずしも平坦面となっておらず、通常はスピーカグリル６の下方を湾曲させた凹凸形状となっており、スピーカグリル６を挟んだ上下位置におけるブラケット４と内装パネル５間の対向間距離Ｄ１，Ｄ２を比べると、上方の対向間距離Ｄ１に対して下方の対向間距離Ｄ２が極端に短いものとなっている。このため、一般的に知られている断面矩形状のクッション部材をスピーカ２の周囲に配置しても、そのクッション部材を内装パネル５の内面形状に追従させることは困難となる。また、内装パネル５の内面が斜面となっている領域においては、クッション部材が内側に倒れ込んで振動板８を弾性支持しているエッジ等と干渉し、音質に多大な影響を与えるおそれもある。なお、内装パネル５の内面形状に合わせた専用のクッション部材を準備すれば、クッション部材と内装パネル５の内面との密着性をスピーカ２の全周囲に亘って高めることが可能となるが、内装パネル５の内面形状は車種毎に異なるため、車種毎に何種類ものクッション部材を準備する必要があり、型の作製費や管理工数等を含めてコスト高になるという課題が発生する。 In such a case, a cushion member having a rectangular cross section is attached to the bracket 4 fixed to the inner panel 1 so as to surround the collar portion 3a of the frame 3, and the cushion member is attached to the inner surface of the bracket 4 and the interior panel 5. A seal structure in which it is sandwiched between them is conceivable. However, the inner surface of the interior panel 5 to which one end side of the cushion member adheres is not necessarily a flat surface, and is usually an uneven shape in which the lower side of the speaker grill 6 is curved. Comparing the facing distances D1 and D2 between the bracket 4 and the interior panel 5 at the position, the lower facing distance D2 is extremely shorter than the upper facing distance D1. Therefore, even if a generally known cushion member having a rectangular cross section is arranged around the speaker 2, it is difficult to make the cushion member follow the inner surface shape of the interior panel 5. Further, in a region where the inner surface of the interior panel 5 is an inclined surface, the cushion member may fall inward and interfere with the edge or the like elastically supporting the diaphragm 8, which may greatly affect the sound quality. If a dedicated cushion member that matches the shape of the inner surface of the interior panel 5 is prepared, the adhesion between the cushion member and the inner surface of the interior panel 5 can be enhanced over the entire circumference of the speaker 2. Since the shape of the inner surface of the panel 5 is different for each vehicle type, it is necessary to prepare many kinds of cushion members for each vehicle type, and there is a problem that the cost is increased including the production cost of the mold and the management man-hours.
本発明は、このような従来技術の実情に鑑みてなされたもので、その目的は、安価で汎用性の高い弾性吸音部材を用いて確実なシール性を確保することができると共に、弾性吸音部材の倒れ込みを防止することができる車載用スピーカシステムを提供することにある。 The present invention has been made in view of such circumstances of the prior art, and an object thereof is to ensure reliable sealing performance by using an elastic sound absorbing member that is inexpensive and has high versatility, and at the same time, elastic sound absorbing member. An object of the present invention is to provide an in-vehicle speaker system capable of preventing the vehicle from falling.
上記の目的を達成するために、本発明の車載用スピーカシステムは、開口部を有する車両の支持部材と、前記開口部の内側に配置されて前側で振動板を支持し後側で磁気回路を支持するフレームと、前記振動板の前面側を覆うように支持部材に取り付けられた内装パネルとを備え、前記内装パネルに前記振動板で発生した音圧を透過させる放音部が設けられている車載用スピーカシステムにおいて、前記フレームの周縁と前記内装パネルとの間、または前記フレームの周囲の前記支持部材と前記内装パネルとの間に挟持される環状の弾性吸音部材が配設されており、前記弾性吸音部材は、径方向の内側半分に対して外側半分の方が前方に突出すると共に、径方向の内側半分の断面積よりも外側半分の断面積の方が大きい断面形状となっているようにした。 In order to achieve the above object, a vehicle-mounted speaker system of the present invention includes a vehicle support member having an opening, a diaphragm disposed inside the opening to support a diaphragm on the front side, and a magnetic circuit on the rear side. A frame for supporting and an interior panel attached to a support member so as to cover the front side of the diaphragm are provided, and the interior panel is provided with a sound emitting portion for transmitting sound pressure generated by the diaphragm. In the in-vehicle speaker system, an annular elastic sound absorbing member is disposed between the peripheral edge of the frame and the interior panel, or between the support member and the interior panel around the frame, The elastic sound absorbing member has a cross-sectional shape in which the outer half protrudes forward with respect to the inner half in the radial direction, and the cross-sectional area of the outer half is larger than the cross-sectional area of the inner half in the radial direction . I did it.
このように構成された車載用スピーカシステムでは、既設のスピーカを新たなスピーカに交換する場合に、スピーカの構成部材であるフレームの縁部を支持部材に固定し、このフレームの周囲に環状の弾性吸音部材を配置した後、放音部が設けられた内装パネルを支持部材に取り付けると、弾性吸音部材が放音部の周囲で支持部材と内装パネルの内面との間に挟持されるため、振動板の背面から出た音波の前方空間への回り込みが弾性吸音部材でシールされ、振動板の前面と背面から出た音波どうしの干渉や同期現象に起因する音質の悪化を防止することができる。その際、弾性吸音部材は、径方向の内側半分に対して外側半分の方が前方に突出すると共に、径方向の内側半分の断面積よりも外側半分の断面積の方が大きい断面形状となっているため、内装パネルの内面が平坦でない凹凸形状であったとしても、弾性吸音部材を内装パネルの内面の凹凸形状に追従させることができると共に、弾性吸音部材が内側へ倒れ込んで振動板に接触してしまうことを防止できる。 In the in-vehicle speaker system configured in this way, when replacing an existing speaker with a new speaker, the edge portion of the frame, which is a constituent member of the speaker, is fixed to the support member, and an annular elastic member is provided around the frame. When the interior panel provided with the sound emission part is attached to the support member after the sound absorption member is arranged, the elastic sound absorption member is sandwiched between the support member and the inner surface of the interior panel around the sound emission part, which causes vibration. The elastic sound absorbing member seals the wraparound of the sound waves emitted from the back surface of the plate to the front space, and it is possible to prevent the sound quality from being deteriorated due to the interference between the sound waves emitted from the front surface and the back surface of the diaphragm and the synchronization phenomenon. At that time, the elastic sound-absorbing member has a cross-sectional shape in which the outer half protrudes forward with respect to the inner half in the radial direction and the cross-sectional area of the outer half is larger than the cross-sectional area of the inner half in the radial direction. Therefore, even if the inner surface of the interior panel is uneven, the elastic sound absorbing member can follow the uneven shape of the inner surface of the interior panel, and the elastic sound absorbing member falls inward and contacts the diaphragm. It can be prevented.
上記の構成において、弾性吸音部材の外周面に円周方向に延びるスリットが形成されていると、弾性吸音部材の内側への倒れ込みをより確実に防止することができて好ましい。 In the above structure, it is preferable that the elastic sound absorbing member is provided with a slit extending in the circumferential direction on the outer peripheral surface thereof because it is possible to more reliably prevent the elastic sound absorbing member from falling inward.
また、上記の構成において、弾性吸音部材は直角台形の断面形状を有する長尺状体であり、この弾性吸音部材の先細り形状の先端部を変形させて内装パネルの内面に密着させていると、一般的に知られている断面矩形状のクッション部材を長手方向に沿って斜めに２分することにより、安価で汎用性の高い弾性吸音部材を簡単に作製することができる。 Further, in the above configuration, the elastic sound absorbing member is an elongated body having a right-angled trapezoidal cross-sectional shape, and the taper-shaped tip end portion of this elastic sound absorbing member is deformed and brought into close contact with the inner surface of the interior panel, By bisecting a generally known cushion member having a rectangular cross section along the longitudinal direction, an inexpensive and highly versatile elastic sound absorbing member can be easily manufactured.
本発明の車載用スピーカシステムによれば、スピーカグリルを有する内装パネルの内面の凹凸形状に拘わらず、安価で汎用性の高い弾性吸音部材を用いて確実なシール性を確保することができると共に、弾性吸音部材の倒れ込みを防止することができる。 According to the vehicle-mounted speaker system of the present invention, it is possible to ensure reliable sealing performance using an elastic sound absorbing member that is inexpensive and has high versatility, regardless of the uneven shape of the inner surface of the interior panel having the speaker grill, It is possible to prevent the elastic sound absorbing member from falling down.
発明の実施の形態について図面を参照して説明すると、図１に示すように、本発明の実施形態例に係る車載用スピーカシステムは、自動車のドア内に設置された開口部１ａを有するインナーパネル１と、開口部１ａの内側に位置するようにブラケット４を介してインナーパネル１に支持されたスピーカ２と、スピーカ２を覆うようにインナーパネル１に取り付けられた内装パネル５と、ブラケット４と内装パネル５の内面との間に介設された弾性吸音部材１０等を備えている。なお、インナーパネル１とブラケット４によって支持部材が構成されている。 BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an in-vehicle speaker system according to an embodiment of the present invention has an inner panel having an opening 1a installed in a door of an automobile. 1, a speaker 2 supported by the inner panel 1 via a bracket 4 so as to be located inside the opening 1a, an interior panel 5 attached to the inner panel 1 so as to cover the speaker 2, and a bracket 4. The elastic sound absorbing member 10 and the like provided between the interior panel 5 and the inner surface thereof are provided. The inner panel 1 and the bracket 4 constitute a support member.
スピーカ２は、磁気ギャップを有する磁気回路９と、磁気ギャップに配置されて通電時に電磁相互作用で駆動されるボイスコイル（図示せず）と、ボイスコイルに連動して振動する略円錐形状の振動板８と、これらボイスコイルおよび振動板８を弾性的に支持している円環状のエッジ１２と、エッジ１２の外周部を保持しているフレーム３とによって主に構成されており、フレーム３は前側でエッジ１２を介して振動板８を支持し後側で磁気回路９の構成部材であるヨークを支持している。フレーム３は前端部に円環状の鍔部３ａを有し、この鍔部３ａにはリング状のブラケット４が接着やねじ止め等の手段を用いて固定されており、スピーカ２はこのブラケット４を介してインナーパネル１に取り付けられている。 The speaker 2 includes a magnetic circuit 9 having a magnetic gap, a voice coil (not shown) disposed in the magnetic gap and driven by electromagnetic interaction when energized, and a substantially conical vibration vibrating in conjunction with the voice coil. The plate 8 is mainly configured by a ring 8, an annular edge 12 that elastically supports the voice coil and the diaphragm 8, and a frame 3 that holds an outer peripheral portion of the edge 12. The diaphragm 8 is supported on the front side via the edge 12, and the yoke, which is a constituent member of the magnetic circuit 9, is supported on the rear side. The frame 3 has an annular flange 3a at the front end thereof, and a ring-shaped bracket 4 is fixed to the flange 3a by means such as adhesion or screwing, and the speaker 2 mounts the bracket 4 on the flange 3a. It is attached to the inner panel 1 through.
内装パネル５はドアトリムと呼ばれる装飾板であり、この内装パネル５には振動板８から出た音を透過させるスピーカグリル６（放音部）が設けられている。内装パネル５の内面（背面）は平坦面となっておらず、スピーカグリル６の下部側を湾曲面とする凹凸形状となっているため、インナーパネル１と内装パネル５の対向間距離は、スピーカグリル６の上方側に対して下方側が狭くなっている。内装パネル５の背面にはスピーカグリル６を包囲するように環状突起５ａが形成されており、この環状突起５ａはスピーカ２の振動板８のエッジ近傍と所定間隔を存して対向している。なお、図１に示すスピーカ２は既設の純正スピーカを取り外して口径の大きなスピーカに交換したものであり、環状突起５ａが連続する環状軌跡の直径は交換前の純正スピーカの口径に合わせた大きさに設定されているため、環状突起５ａはフレームの鍔部３ａよりも内側で振動板８のエッジ１２近傍と対向している。 The interior panel 5 is a decorative plate called a door trim, and the interior panel 5 is provided with a speaker grill 6 (sound emission part) that transmits sound emitted from the diaphragm 8. Since the inner surface (back surface) of the interior panel 5 is not a flat surface but has an uneven shape with the lower side of the speaker grill 6 as a curved surface, the distance between the inner panel 1 and the interior panel 5 facing each other is equal to the speaker. The lower side is narrower than the upper side of the grill 6. An annular protrusion 5a is formed on the back surface of the interior panel 5 so as to surround the speaker grill 6, and the annular protrusion 5a faces the vicinity of the edge of the diaphragm 8 of the speaker 2 at a predetermined interval. It should be noted that the speaker 2 shown in FIG. 1 is obtained by removing the existing genuine speaker and replacing it with a speaker having a large diameter, and the diameter of the annular locus in which the annular protrusions 5a are continuous has a size corresponding to the diameter of the genuine speaker before replacement. Therefore, the annular protrusion 5a faces the vicinity of the edge 12 of the diaphragm 8 inside the collar portion 3a of the frame.
弾性吸音部材１０はポリウレタン等の合成樹脂を発泡成形した長尺状のクッション材からなり、無負荷状態における弾性吸音部材１０の断面形状は先端側を先細りにした直角台形となっている。この弾性吸音部材１０は傾斜面を内側に向けた姿勢でフレーム３を環状に包囲するようにブラケット４に貼着されており、弾性吸音部材１０の先端側は環状突起５ａよりも外側位置で内装パネル５の内面に密着している。 The elastic sound absorbing member 10 is made of a long cushion material formed by foaming a synthetic resin such as polyurethane, and the sectional shape of the elastic sound absorbing member 10 in a no-load state is a right-angled trapezoid with the tip side tapered. The elastic sound absorbing member 10 is attached to the bracket 4 so as to surround the frame 3 in an annular shape with the inclined surface facing inward, and the tip end side of the elastic sound absorbing member 10 is placed outside the annular projection 5a. It is in close contact with the inner surface of the panel 5.
図２（ａ）に示すように、このような断面直角台形状の弾性吸音部材１０は、一般的に知られている断面矩形状のクッション部材１０Ａを長手方向に沿って斜めにカットすることにより、１本のクッション部材１０Ａから２本取りすることができる。そして、図２（ｂ）に示すように、斜めにカットされて短くなった方の弾性吸音部材１０の側面に両面接着テープ１１を貼り付け、この両面接着テープ１１を用いてブラケット４に環状に貼り付けられるようになっている。 As shown in FIG. 2A, such an elastic sound absorbing member 10 having a right-angled trapezoidal cross section is obtained by cutting a generally known cushion member 10A having a rectangular cross section obliquely along the longitudinal direction. Two cushion members can be taken from one cushion member 10A. Then, as shown in FIG. 2( b ), a double-sided adhesive tape 11 is attached to the side surface of the elastic sound absorbing member 10 which is cut obliquely and shortened, and the double-sided adhesive tape 11 is used to form an annular shape on the bracket 4. It can be pasted.
既設のスピーカ（純正スピーカ）を口径の大きなスピーカに交換する手順について説明すると、まず、内装パネル５をインナーパネル１から取り外し、この状態でインナーパネル１に支持されていた既設のスピーカ（図示せず）を取り外した後、図３（ａ）に示すように、既設のスピーカよりも口径の大きなスピーカ２をインナーパネル１に取り付ける。スピーカ２のフレーム３には予めブラケット４が取り付けられており、このブラケット４をインナーパネル１にねじ止めすることにより、スピーカ２は開口部１ａの内側に配置される。ブラケット４には両面接着テープ１１を用いて弾性吸音部材１０が環状に貼着されており、この弾性吸音部材１０は内装パネル５からの押圧力を受けない無負荷状態にあるとき、傾斜面を内側に向けた直角台形の断面形状となっている。 Explaining the procedure for replacing an existing speaker (genuine speaker) with a speaker having a large diameter, first, the interior panel 5 is removed from the inner panel 1, and the existing speaker (not shown) supported by the inner panel 1 in this state is shown. 3) is removed, the speaker 2 having a larger diameter than the existing speaker is attached to the inner panel 1 as shown in FIG. A bracket 4 is attached to the frame 3 of the speaker 2 in advance, and the speaker 2 is arranged inside the opening 1a by screwing the bracket 4 to the inner panel 1. An elastic sound absorbing member 10 is attached to the bracket 4 in an annular shape by using a double-sided adhesive tape 11. The elastic sound absorbing member 10 has a slanted surface when it is in a no-load state in which it is not pressed by the interior panel 5. It has a right-angled trapezoidal cross section facing inward.
しかる後、ねじ止めやスナップ止め等の手段を用いて内装パネル５をインナーパネル１に取り付けると、インナーパネル１と内装パネル５の対向間距離が広いスピーカグリル６の上方側では、弾性吸音部材１０の先端側が若干変形して内装パネル５の内面に圧接される（図１参照）。これに対し、インナーパネル１と内装パネル５の対向間距離が広いスピーカグリル６の下方側では、図３（ｂ）に示すように、弾性吸音部材１０の先端側が外側へ大きく変形して内装パネル５の内面に圧接されるため、弾性吸音部材１０を内装パネル５の内面の凹凸形状に追従させることができる。その際、弾性吸音部材１０の断面形状は傾斜面を内側に向けた直角台形状、すなわち、径方向の内側半分に対して外側半分の方が前方に突出する断面形状となっているため、弾性吸音部材１０が内側へ倒れ込んで振動板８に接触してしまうことはなく、スピーカ２の性能を悪化させることなく弾性吸音部材１０をインナーパネル１と内装パネル５との間に挟持させることができる。 After that, when the interior panel 5 is attached to the inner panel 1 using a means such as screwing or snapping, the elastic sound absorbing member 10 is provided above the speaker grill 6 where the facing distance between the inner panel 1 and the interior panel 5 is wide. The tip side of the is slightly deformed and pressed against the inner surface of the interior panel 5 (see FIG. 1). On the other hand, on the lower side of the speaker grill 6 where the facing distance between the inner panel 1 and the interior panel 5 is large, as shown in FIG. 3B, the tip side of the elastic sound absorbing member 10 is largely deformed to the outside, and the interior panel is closed. Since the elastic sound absorbing member 10 is pressed against the inner surface of the interior panel 5, the elastic sound absorbing member 10 can follow the uneven shape of the inner surface of the interior panel 5. At this time, the elastic sound absorbing member 10 has a right-angled trapezoidal shape with an inclined surface facing inward, that is, a cross-sectional shape in which the outer half projects forward with respect to the inner half in the radial direction. The sound absorbing member 10 does not fall inward and contact the diaphragm 8, and the elastic sound absorbing member 10 can be sandwiched between the inner panel 1 and the interior panel 5 without deteriorating the performance of the speaker 2. ..
以上説明したように、本実施形態例に係る車載用スピーカシステムでは、ドア内に配置されたスピーカ２からの再生音がスピーカグリル６を透過して車室内へ放出されるが、振動板８の前方空間と振動板８の背面に連通するドア内空間との間が弾性吸音部材１０によってシールされているため、振動板８の背面から出た音波がドア内空間を経由して振動板８の前方空間に入り込んでしまうことはなく、振動板８の前面と背面から出た音波どうしの干渉や同期現象に起因する音質の悪化を防止することができる。その際、弾性吸音部材１０が傾斜面を内側に向けた直角台形の断面形状を有するクッション部材、すなわち、径方向の内側半分に対して外側半分の方が前方に突出する断面形状となっているため、内装パネル５の内面が平坦でない凹凸形状であったとしても、弾性吸音部材１０を内装パネル５の内面の凹凸形状に追従させることができると共に、弾性吸音部材１０が内側へ倒れ込んでエッジ１２や振動板８に接触してしまうことを防止できる。 As described above, in the in-vehicle speaker system according to the present embodiment, the reproduced sound from the speaker 2 arranged inside the door is transmitted through the speaker grill 6 and is emitted into the vehicle interior. Since the elastic sound absorbing member 10 seals the space between the front space and the interior space of the door that communicates with the rear surface of the diaphragm 8, the sound waves emitted from the rear surface of the diaphragm 8 pass through the interior space of the door to cause vibration of the diaphragm 8. The sound does not enter the front space, and it is possible to prevent the sound quality from being deteriorated due to the interference between the sound waves emitted from the front surface and the back surface of the diaphragm 8 and the synchronization phenomenon. At that time, the elastic sound absorbing member 10 has a right-angled trapezoidal cross-sectional shape with the inclined surface facing inward, that is, a cross-sectional shape in which the outer half of the inner half in the radial direction projects forward. Therefore, even if the inner surface of the interior panel 5 has an uneven shape which is not flat, the elastic sound absorbing member 10 can be made to follow the uneven shape of the inner surface of the interior panel 5, and the elastic sound absorbing member 10 falls inward and the edge 12 It is possible to prevent contact with the diaphragm 8.
これに対して、図８に示す比較例のように、一般的に知られている断面矩形状のクッション部材１０Ａを用いた場合は、内装パネル５の内面が斜面となっている領域において、クッション部材１０Ａが内側に倒れ込んでエッジ１２や振動板８に接触してしまうおそれがあり、音質に多大な影響を与えるという問題が発生する。 On the other hand, as in the comparative example shown in FIG. 8, when the generally known cushion member 10A having a rectangular cross section is used, the cushion is provided in the region where the inner surface of the interior panel 5 is an inclined surface. There is a possibility that the member 10A may fall inward and come into contact with the edge 12 or the diaphragm 8, which causes a problem that the sound quality is greatly affected.
また、本実施形態例に係る車載用スピーカシステムでは、弾性吸音部材１０が直角台形の断面形状を有する長尺状のクッション部材によって構成されており、このような形状の弾性吸音部材１０の先細り形状の先端部を変形させて内装パネル５の内面に密着させているため、一般的に知られている断面矩形状のクッション部材を長手方向に沿って斜めにカットして２分することにより、安価で汎用性の高い弾性吸音部材１０を簡単に作製することができる。 Further, in the in-vehicle speaker system according to the present embodiment example, the elastic sound absorbing member 10 is composed of a long cushion member having a right-angled trapezoidal sectional shape, and the elastic sound absorbing member 10 having such a shape has a tapered shape. Since the tip end of the cushion member is deformed and brought into close contact with the inner surface of the interior panel 5, a generally known cushion member having a rectangular cross section is cut diagonally along the longitudinal direction to divide the cushion member into two parts, which is inexpensive. Therefore, the elastic sound absorbing member 10 having high versatility can be easily manufactured.
なお、本発明の車載用スピーカシステムに用いられる弾性吸音部材１０は種々の変形例が可能であり、例えば、図４（ａ）に示すように、弾性吸音部材１０の外周面に円周方向に延びるスリット１０ａ（切れ込み）を形成するようにしても良い。このように弾性吸音部材１０の外周面にスリット１０ａを形成すると、図４（ｂ）に示すように、内装パネル５をインナーパネル１に取り付けて弾性吸音部材１０の先端部に圧接させたとき、弾性吸音部材１０の先端部がスリット１０ａの形成された外側へ変形し易くなるため、弾性吸音部材１０の内側への倒れ込みをより確実に防止することができる。 The elastic sound absorbing member 10 used in the in-vehicle speaker system of the present invention can be modified in various ways. For example, as shown in FIG. You may make it form the extending slit 10a (cut). When the slit 10a is formed on the outer peripheral surface of the elastic sound absorbing member 10 in this manner, when the interior panel 5 is attached to the inner panel 1 and is brought into pressure contact with the tip end portion of the elastic sound absorbing member 10 as shown in FIG. 4B, Since the tip of the elastic sound absorbing member 10 is easily deformed to the outside where the slit 10a is formed, the elastic sound absorbing member 10 can be more reliably prevented from falling inward.
あるいは、図５（ａ），（ｂ），（ｃ）に示すように、断面形状が直角台形以外の弾性吸音部材１０を用いることも可能であり、要は、径方向の内側半分に対して外側半分の方が前方に突出して面積の大きな断面形状となっている弾性吸音部材１０であれば良い。 Alternatively, as shown in FIGS. 5(a), (b), and (c), it is possible to use an elastic sound absorbing member 10 having a cross-sectional shape other than a right-angled trapezoid. It suffices that the outer half of the elastic sound absorbing member 10 projects forward and has a large cross-sectional shape.
また、上記実施形態例では、予めフレーム３の鍔部３ａにブラケット４を取り付けておき、このブラケット４を介してスピーカ２をインナーパネル１に支持するようにしているが、ブラケット４を省略してフレーム３の鍔部３ａをインナーパネル１に直接取り付けるようにしても良い。その場合、フレーム３の鍔部３ａを包囲するように弾性吸音部材１０を環状に配置し、この弾性吸音部材１０の底面をインナーパネル１に貼着すれば良い。 Further, in the above embodiment, the bracket 4 is attached to the collar portion 3a of the frame 3 in advance and the speaker 2 is supported by the inner panel 1 via the bracket 4, but the bracket 4 is omitted. The flange portion 3a of the frame 3 may be directly attached to the inner panel 1. In that case, the elastic sound absorbing member 10 may be annularly arranged so as to surround the collar portion 3a of the frame 3, and the bottom surface of the elastic sound absorbing member 10 may be attached to the inner panel 1.
また、上記実施形態例では、弾性吸音部材１０をブラケット４に貼着しているが、フレーム３の鍔部３ａが周方向外側へ大きく突出しているスピーカ２の場合には、弾性吸音部材１０をフレーム３の鍔部３ａに貼着するようにしても良い。 Further, in the above-described embodiment, the elastic sound absorbing member 10 is attached to the bracket 4, but in the case of the speaker 2 in which the collar portion 3a of the frame 3 is largely projected outward in the circumferential direction, the elastic sound absorbing member 10 is attached. It may be attached to the collar portion 3a of the frame 3.
また、上記実施形態例では、自動車のドア内に配置したスピーカ２をドアトリムと呼ばれる内装パネル５で覆うようにした車載用スピーカシステムについて説明したが、本発明は、ワンボックスカー等のラゲッジサイドトリム（内装パネル）の内部やセダン等のリアトレイの内部にスピーカを配置した車載用スピーカシステムにも適用可能である。 Further, in the above-described embodiment, the in-vehicle speaker system in which the speaker 2 arranged in the door of the automobile is covered with the interior panel 5 called a door trim has been described. However, the present invention is not limited to a luggage side trim of a one-box car or the like. It is also applicable to an in-vehicle speaker system in which speakers are arranged inside the (interior panel) or inside a rear tray such as a sedan.
１ インナーパネル（支持部材）
１ａ 開口部
２ スピーカ
３ フレーム
３ａ 鍔部
４ ブラケット（支持部材）
５ 内装パネル
５ａ 環状突起
６ スピーカグリル（放音部）
８ 振動板
９ 磁気回路
１０ 弾性吸音部材
１０ａ スリット
１１ 両面接着テープ
１２ エッジ
1 Inner panel (support member)
1a Opening 2 Speaker 3 Frame 3a Collar 4 Bracket (supporting member)
5 Interior panel 5a Annular protrusion 6 Speaker grill (sound emitting part)
8 Vibration Plate 9 Magnetic Circuit 10 Elastic Sound Absorbing Member 10a Slit 11 Double-sided Adhesive Tape 12 Edge
Claims (3)
前記フレームの周縁と前記内装パネルとの間、または前記フレームの周囲の前記支持部材と前記内装パネルとの間に挟持される環状の弾性吸音部材が配設されており、前記弾性吸音部材は、径方向の内側半分に対して外側半分の方が前方に突出すると共に、径方向の内側半分の断面積よりも外側半分の断面積の方が大きい断面形状となっていることを特徴とする車載用スピーカシステム。 A vehicle support member having an opening, a frame disposed inside the opening to support the diaphragm on the front side and a magnetic circuit on the rear side, and a support member for covering the front side of the diaphragm. In a vehicle-mounted speaker system, comprising: an attached interior panel, wherein the interior panel is provided with a sound emitting portion that transmits sound pressure generated in the diaphragm.
Between the peripheral edge of the frame and the interior panel, or an annular elastic sound absorbing member sandwiched between the support member and the interior panel around the frame is disposed, the elastic sound absorbing member, The vehicle body is characterized in that the outer half protrudes forward with respect to the inner half in the radial direction, and the cross-sectional area of the outer half is larger than the cross-sectional area of the inner half in the radial direction. Speaker system.
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| CN111667398B (en) | 2019-03-07 | 2023-08-01 | 株式会社理光 | Image processing method, apparatus and computer readable storage medium |
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| JPS5749494Y2 (en) * | 1977-11-08 | 1982-10-29 | ||
| US4653607A (en) * | 1985-12-10 | 1987-03-31 | American Motors Corporation | Speaker seal |
| JP2607296Y2 (en) * | 1993-05-14 | 2001-05-28 | クラリオン株式会社 | Speaker structure |
| JP4399340B2 (en) * | 2003-11-28 | 2010-01-13 | パイオニア株式会社 | Speaker device |
| JP2008022174A (en) * | 2006-07-11 | 2008-01-31 | Ritz Corporation Inc | Sound absorption member |
| WO2009144818A1 (en) * | 2008-05-30 | 2009-12-03 | パイオニア株式会社 | Speaker system |
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