JP6206326B2 - In-vehicle speaker device - Google Patents
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- JP6206326B2 JP6206326B2 JP2014106498A JP2014106498A JP6206326B2 JP 6206326 B2 JP6206326 B2 JP 6206326B2 JP 2014106498 A JP2014106498 A JP 2014106498A JP 2014106498 A JP2014106498 A JP 2014106498A JP 6206326 B2 JP6206326 B2 JP 6206326B2
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Description
本発明は、車載用スピーカ装置に関し、更に詳しくは、ビビリ音を低減して車両室内でより良質な音響を実現することができる車載用スピーカ装置に関する。 The present invention relates to a vehicle-mounted speaker device, and more particularly to a vehicle-mounted speaker device capable of reducing chatter noise and realizing better sound in a vehicle compartment.
従来の車載用スピーカ装置として、天井材等の内装材に取り付けられるものが一般に知られている(例えば、特許文献1参照)。この特許文献1には、例えば、図11に示すように、振動板108を備えるスピーカ103と、振動板108と内装材102との間に配されて振動板108の振動を内装材102に伝達する枠板状の伝達部材104と、内装材102の出力用開口102aを覆うスピーカグリル105と、備えてなる車載用スピーカ装置101が開示されている。この車載用スピーカ装置101によると、伝達部材104により振動板108の振動が内装材102に効率良く伝達される。そして、内装材102の振動による音出力とスピーカ103からの直接的な音出力とによって車両室内で良質な音響が実現される。 As a conventional vehicle-mounted speaker device, one that is attached to an interior material such as a ceiling material is generally known (see, for example, Patent Document 1). In Patent Document 1, for example, as shown in FIG. 11, a speaker 103 provided with a diaphragm 108, and the vibration of the diaphragm 108 is transmitted to the interior material 102 by being arranged between the diaphragm 108 and the interior material 102. A vehicle-mounted speaker device 101 including a frame-plate-shaped transmission member 104 and a speaker grill 105 covering the output opening 102a of the interior material 102 is disclosed. According to the in-vehicle speaker device 101, the vibration of the diaphragm 108 is efficiently transmitted to the interior material 102 by the transmission member 104. The sound output by the vibration of the interior material 102 and the direct sound output from the speaker 103 realize high-quality sound in the vehicle compartment.
さらに、上記特許文献1には、例えば、図12に示すように、所定の配列方向Pに沿って複数配列される磁石110及びコイル111を備えるスピーカ103を採用することが開示されている。 Further, for example, Patent Document 1 discloses that a speaker 103 including a plurality of magnets 110 and coils 111 arranged along a predetermined arrangement direction P is employed as shown in FIG.
しかし、上記従来の車載用スピーカ装置101では、伝達部材104が比較的強固な構造を有するため、スピーカ103の振動板108の複雑な振動によっては伝達部材104が追従せずビビリ音(すなわち、ノイズ)が生じてしまう場合がある。 However, in the conventional in-vehicle speaker device 101, since the transmission member 104 has a relatively strong structure, the transmission member 104 does not follow due to complicated vibration of the diaphragm 108 of the speaker 103, that is, a chatter sound (that is, noise). ) May occur.
また、上記従来の車載用スピーカ装置101では、特定のスピーカ103を採用しているため、振動板108のコイル111を挟む両側で振幅に強弱が発生する場合があり、ビビリ音が生じ易い。この振幅の強弱の要因としては、例えば、隣接するコイル111間を結ぶ導線が振動板108の一方側に偏って配されることが考えられる。 Further, since the above-described conventional in-vehicle speaker device 101 employs the specific speaker 103, the amplitude may be increased or decreased on both sides of the coil 111 of the diaphragm 108, and chatter noise is likely to occur. As a factor of the magnitude of the amplitude, for example, it is conceivable that the conductive wire connecting the adjacent coils 111 is arranged to be biased to one side of the diaphragm 108.
本発明は、上記現状に鑑みてなされたものであり、ビビリ音を低減して車両室内でより良質な音響を実現することができる車載用スピーカ装置を提供することを目的とする。 The present invention has been made in view of the above situation, and an object of the present invention is to provide an in-vehicle speaker device that can reduce chatter noise and realize better sound in a vehicle compartment.
上記問題を解決するために、請求項1に記載の発明は、車両の内装材に取り付けられる車載用スピーカ装置であって、振動板を備えるスピーカと、前記振動板と前記内装材との間に配されて前記振動板の振動を前記内装材に伝達する枠状の伝達部材と、を備え、前記伝達部材には、外周縁部と内周縁部とを連絡するように線状に延びる脆弱部が形成されていることを要旨とする。
請求項2に記載の発明は、請求項1の発明において、前記脆弱部は、前記伝達部材の外周縁部及び内周縁部のうちの一方の縁部から切り欠かれて他方の縁部まで延びるスリットであることを要旨とする。
請求項3に記載の発明は、請求項1又は2の発明において、前記スピーカは、所定の配列方向に沿って複数配列される磁石及びコイルを備え、前記伝達部材は、前記配列方向と略平行な方向に延びる一対の片を備え、前記脆弱部は、前記一対の片のうちの一方の片に前記配列方向と略直交する方向に延びて形成される複数の第1脆弱部と、他方の片に前記配列方向と略直交する方向に延びて形成される複数の第2脆弱部と、を備え、隣接する前記第1脆弱部の前記配列方向の間隔と、隣接する前記第2脆弱部の前記配列方向の間隔と、が異なっていることを要旨とする。
請求項4に記載の発明は、請求項1乃至3のいずれかの発明において、前記伝達部材と前記振動板とがネジで固定されており、前記伝達部材には、前記ネジと噛み合うナットが埋設されていることを要旨とする。
請求項5に記載の発明は、請求項1乃至4のいずれかの発明において、前記伝達部材の横幅は、前記振動板の横幅と略同じであることを要旨とする。
In order to solve the above problem, the invention according to claim 1 is an in-vehicle speaker device attached to an interior material of a vehicle, wherein the speaker includes a diaphragm, and between the diaphragm and the interior material. A frame-shaped transmission member that is arranged and transmits the vibration of the diaphragm to the interior material, and the transmission member includes a brittle portion that extends linearly so as to connect the outer peripheral edge portion and the inner peripheral edge portion. The gist is that is formed.
According to a second aspect of the present invention, in the first aspect of the invention, the fragile portion is notched from one edge of the outer peripheral edge and the inner peripheral edge of the transmission member and extends to the other edge. The gist is that it is a slit.
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the speaker includes a plurality of magnets and coils arranged along a predetermined arrangement direction, and the transmission member is substantially parallel to the arrangement direction. A plurality of first fragile portions formed on one piece of the pair of pieces so as to extend in a direction substantially perpendicular to the arrangement direction, and the other fragile portion. A plurality of second fragile portions formed extending in a direction substantially orthogonal to the arrangement direction on a piece, and an interval in the arrangement direction of the adjacent first fragile portions; The gist is that the interval in the arrangement direction is different.
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the transmission member and the diaphragm are fixed with a screw, and a nut that engages with the screw is embedded in the transmission member. It is a summary.
The gist of a fifth aspect of the present invention is that, in any of the first to fourth aspects of the present invention, the lateral width of the transmission member is substantially the same as the lateral width of the diaphragm.
本発明の車載用スピーカ装置によると、振動板を備えるスピーカと、振動板と内装材との間に配されて振動板の振動を内装材に伝達する枠状の伝達部材と、を備え、伝達部材には、外周縁部と内周縁部とを連絡するように線状に延びる脆弱部が形成されている。このように、伝達部材に線状の脆弱部を設定することで、伝達部材で振動の共振点がズラされてビビリ音が低減される。よって、車両室内でより良好な音響を実現することができる。
また、前記脆弱部が、前記伝達部材の外周縁部及び内周縁部のうちの一方の縁部から切り欠かれて他方の縁部まで延びるスリットである場合は、スリットによりビビリ音がより確実に低減される。
また、前記スピーカが、所定の配列方向に沿って複数配列される磁石及びコイルを備え、前記伝達部材が、一対の片を備え、前記脆弱部が、複数の第1脆弱部と、複数の第2脆弱部と、を備え、隣接する前記第1脆弱部の前記配列方向の間隔と、隣接する前記第2脆弱部の前記配列方向の間隔と、が異なっている場合は、伝達部材の一対の片の間で強度が異なることとなり、スピーカの振動板の振幅の強弱に応じて共振点が好適にズラされ、ビビリ音がより確実に低減される。
また、前記伝達部材と前記振動板とがネジで固定されており、前記伝達部材に、前記ネジと噛み合うナットが埋設されている場合は、振動板と伝達部材との密着性が高められ、ビビリ音がより確実に低減される。
さらに、前記伝達部材の横幅が、前記振動板の横幅と略同じである場合は、伝達部材の横幅が振動板の横幅より大きな場合と比べて、ビビリ音がより確実に低減される。
According to a vehicle-mounted speaker device of the present invention, a speaker including a diaphragm, and a frame-shaped transmission member that is disposed between the diaphragm and the interior material and transmits vibrations of the diaphragm to the interior material are transmitted. The member is formed with a weakened portion extending linearly so as to connect the outer peripheral edge portion and the inner peripheral edge portion. Thus, by setting a linear weak part in a transmission member, the resonance point of vibration is shifted in the transmission member and chatter noise is reduced. Therefore, better sound can be realized in the vehicle compartment.
In addition, when the fragile portion is a slit that is notched from one edge of the outer peripheral edge and the inner peripheral edge of the transmission member and extends to the other edge, the chatter sound is more reliably generated by the slit. Reduced.
The speaker includes a plurality of magnets and coils arranged along a predetermined arrangement direction, the transmission member includes a pair of pieces, the weakened portion includes a plurality of first weakened portions, and a plurality of first weakened portions. Two fragile portions, and when the interval in the arrangement direction of the adjacent first fragile portions and the interval in the arrangement direction of the adjacent second fragile portions are different, a pair of transmission members The intensity differs between the pieces, and the resonance point is suitably shifted according to the amplitude of the diaphragm of the speaker, and chatter noise is more reliably reduced.
In addition, when the transmission member and the diaphragm are fixed with screws, and a nut that engages with the screw is embedded in the transmission member, the adhesion between the diaphragm and the transmission member is improved, and chattering is performed. Sound is reduced more reliably.
Furthermore, when the lateral width of the transmission member is substantially the same as the lateral width of the diaphragm, chatter noise is more reliably reduced than when the lateral width of the transmission member is larger than the lateral width of the diaphragm.
本発明について、本発明による典型的な実施形態の非限定的な例を挙げ、言及された複数の図面を参照しつつ以下の詳細な記述にて更に説明するが、同様の参照符号は図面のいくつかの図を通して同様の部品を示す。
ここで示される事項は例示的なものおよび本発明の実施形態を例示的に説明するためのものであり、本発明の原理と概念的な特徴とを最も有効に且つ難なく理解できる説明であると思われるものを提供する目的で述べたものである。この点で、本発明の根本的な理解のために必要である程度以上に本発明の構造的な詳細を示すことを意図してはおらず、図面と合わせた説明によって本発明の幾つかの形態が実際にどのように具現化されるかを当業者に明らかにするものである。 The items shown here are exemplary and illustrative of the embodiments of the present invention, and are the most effective and easy-to-understand explanations of the principles and conceptual features of the present invention. It is stated for the purpose of providing what seems to be. In this respect, it is not intended to illustrate the structural details of the present invention beyond what is necessary for a fundamental understanding of the present invention. It will be clear to those skilled in the art how it is actually implemented.
<車載用スピーカ装置>
本実施形態に係る車載用スピーカ装置は、車両の内装材(2)に取り付けられる車載用スピーカ装置(1)であって、振動板(8)を備えるスピーカ(3)と、振動板と内装材との間に配されて振動板の振動を内装材に伝達する枠状の伝達部材(4)と、を備え、伝達部材(4)には、外周縁部(4b)と内周縁部(4c)とを連絡するように線状に延びる脆弱部(18a〜18d、18’、36、37)が形成されている(例えば、図1〜図3及び図10等参照)。なお、上記「線状」とは、脆弱部の平面視で線のように細長い形を意図する。
<In-vehicle speaker device>
The vehicle-mounted speaker device according to the present embodiment is a vehicle-mounted speaker device (1) attached to a vehicle interior material (2), which includes a speaker (3) including a diaphragm (8), a diaphragm, and an interior material. And a frame-shaped transmission member (4) that transmits vibrations of the diaphragm to the interior material. The transmission member (4) includes an outer peripheral edge portion (4b) and an inner peripheral edge portion (4c). ) Are formed so as to communicate with each other (see FIGS. 1 to 3, 10, etc.). In addition, the above “linear” means an elongated shape like a line in plan view of the fragile portion.
上記「脆弱部」は、伝達部材で振動の共振点をズラし得る限り、その形状、個数、配置形態等は特に問わない。この脆弱部は、通常、伝達部材を複数の部位に分けるように複数配されている。この脆弱部としては、例えば、伝達部材(4)の外周縁部(4b)及び内周縁部(4c)のうちの一方の縁部から切り欠かれて他方の縁部まで延びるスリット(18a〜18d、18’)である形態(例えば、図3及び図10(a)等参照)、伝達部材(4)の厚さ方向に貫通した貫通孔(36)である形態(例えば、図10(b)等参照)、伝達部材(4)の厚さ方向に凹んだ溝部(37)である形態(例えば、図10(c)等参照)などを挙げることができる。なお、上記脆弱部の横幅(S)としては、例えば、1〜10mm(好ましくは2〜6mm)等を挙げることができる(例えば、図5等参照)。 The “fragile portion” is not particularly limited in shape, number, arrangement, etc. as long as the resonance point of vibration can be shifted by the transmission member. A plurality of the fragile portions are usually arranged so that the transmission member is divided into a plurality of portions. As this weak part, the slit (18a-18d) notched from one edge part of the outer peripheral part (4b) and inner peripheral part (4c) of a transmission member (4) and extending to the other edge part, for example , 18 ′) (see, for example, FIG. 3 and FIG. 10 (a), etc.), and a form (eg, FIG. Etc.), a form (for example, see FIG. 10C, etc.) that is a groove (37) recessed in the thickness direction of the transmission member (4). In addition, as a width (S) of the said weak part, 1-10 mm (preferably 2-6 mm) etc. can be mentioned, for example (for example, refer FIG. 5 etc.).
本実施形態に係る車載用スピーカ装置としては、例えば、上記スピーカ(3)は、所定の配列方向(P)に沿って複数配列される磁石(10)及びコイル(11)を備え、上記伝達部材(4)は、配列方向(P)と略平行な方向に延びる一対の片(15a、15b)を備え、上記脆弱部は、一対の片のうちの一方の片(15a)に配列方向(P)と略直交する方向に延びるように形成される複数の第1脆弱部(18a)と、他方の片(15b)に配列方向(P)と略直交する方向に延びるように形成される複数の第2脆弱部(18b)と、を備え、隣接する第1脆弱部の配列方向の間隔(L1)と、隣接する第2脆弱部の配列方向の間隔(L2)と、が異なっている(例えば、図5等参照)。 As the vehicle-mounted speaker device according to the present embodiment, for example, the speaker (3) includes a plurality of magnets (10) and coils (11) arranged along a predetermined arrangement direction (P), and the transmission member (4) includes a pair of pieces (15a, 15b) extending in a direction substantially parallel to the arrangement direction (P), and the fragile portion is arranged in one of the pair of pieces (15a) in the arrangement direction (P ) And a plurality of first fragile portions (18a) formed so as to extend in a direction substantially orthogonal to the other) and a plurality of first fragile portions (15b) formed so as to extend in a direction substantially orthogonal to the arrangement direction (P). A second fragile portion (18b), and an arrangement direction interval (L1) between adjacent first fragile portions is different from an arrangement direction interval (L2) between adjacent second fragile portions (for example, , See FIG.
本実施形態に係る車載用スピーカ装置としては、例えば、上記伝達部材(4)と振動板(8)とがネジ(27)で固定されており、伝達部材には、ネジと噛み合うナット(28)が埋設されている形態(例えば、図4等参照)を挙げることができる。このナット(28)は、例えば、樹脂製の伝達部材の成形時にインサート成形されることができる。これにより、振動板と伝達部材との密着性がより高められる。 As the vehicle-mounted speaker device according to the present embodiment, for example, the transmission member (4) and the diaphragm (8) are fixed by screws (27), and the transmission member has nuts (28) that mesh with the screws. Can be mentioned (for example, see FIG. 4 and the like). The nut (28) can be insert-molded, for example, when a resin transmission member is molded. Thereby, the adhesiveness of a diaphragm and a transmission member is improved more.
本実施形態に係る車載用スピーカ装置としては、例えば、上記伝達部材(4)の横幅(W1)は、振動板(8)の横幅(W2)と略同じである形態(例えば、図4等参照)を挙げることがきる。この伝達部材(4)の横幅(W1)としては、例えば、44〜60mm(好ましくは44〜54mm)等を挙げることができる。また、伝達部材(4)の厚さ(t)としては、例えば、1.8〜3.5mm(好ましくは2〜2.8mm)等を挙げることができる。 As an in-vehicle speaker device according to the present embodiment, for example, the width (W1) of the transmission member (4) is substantially the same as the width (W2) of the diaphragm (8) (for example, see FIG. 4 and the like). ). Examples of the width (W1) of the transmission member (4) include 44 to 60 mm (preferably 44 to 54 mm). Moreover, as thickness (t) of a transmission member (4), 1.8-3.5 mm (preferably 2-2.8 mm) etc. can be mentioned, for example.
本実施形態に係る車載用スピーカ装置としては、例えば、上記伝達部材(4)の内周縁部(4c)には、車室内側に向かって延びて内装材(2)に形成された出力用開口(2a)の側面に対向又は接触する立壁(21)が設けられており、上記脆弱部は、伝達部材(4)の外周縁部(4b)から切り欠かれて内周縁部(4c)まで延びるスリット(18a〜18d)である形態(例えば、図3及び図4等参照)を挙げることができる。これにより、スリットにより内装材への音遮蔽機能を有する立壁が分断されない。 As an in-vehicle speaker device according to the present embodiment, for example, an output opening formed in the interior material (2) is formed on the inner peripheral edge (4c) of the transmission member (4) so as to extend toward the vehicle interior side. A standing wall (21) facing or in contact with the side surface of (2a) is provided, and the fragile portion is notched from the outer peripheral edge (4b) of the transmission member (4) and extends to the inner peripheral edge (4c). The form (for example, refer FIG.3, FIG.4 etc.) which is a slit (18a-18d) can be mentioned. Thereby, the standing wall which has the sound shielding function to an interior material by a slit is not parted.
なお、上記「伝達部材」の材質としては、ポリカーボネート(PC)、ポリブチレンテレフタレート(PBT)、ポリアミド(PA)、変性ポリフェニレンエーテル(m−PPE)等の樹脂を挙げることができる。これらのうち、ポリカーボネートであることが好ましい。振動の減衰率(損失係数)が低い、即ち振動伝達性が高いためである。さらに、伝達部材は、ガラス繊維、炭素繊維、合成繊維等の繊維材料を含む樹脂からなることが好ましい。折れ、伝達部材の割れ等の破損が抑制されるためである。 Examples of the material of the “transmission member” include resins such as polycarbonate (PC), polybutylene terephthalate (PBT), polyamide (PA), and modified polyphenylene ether (m-PPE). Of these, polycarbonate is preferable. This is because the vibration damping rate (loss factor) is low, that is, the vibration transmission is high. Furthermore, it is preferable that a transmission member consists of resin containing fiber materials, such as glass fiber, carbon fiber, and a synthetic fiber. This is because breakage and breakage of the transmission member are suppressed.
以下、図面を用いて実施例により本発明を具体的に説明する。 Hereinafter, the present invention will be specifically described with reference to the drawings.
(1)車載用スピーカ装置の構成
本実施例に係る車載用スピーカ装置1は、図1及び図2に示すように、車両天井材2(本発明に係る「内装材」として例示する。)の後方左右側に取り付けられる。これら各車載用スピーカ装置1は、図3及び図4に示すように、スピーカ3(「平面スピーカ」とも称される。)、伝達部材4及びスピーカグリル5を備えている。
(1) Configuration of In-Vehicle Speaker Device As shown in FIG. 1 and FIG. 2, the in-vehicle speaker device 1 according to the present embodiment is a vehicle ceiling material 2 (illustrated as “interior material” according to the present invention). It is attached to the rear left and right side. Each of these vehicle-mounted speaker devices 1 includes a speaker 3 (also referred to as a “planar speaker”), a transmission member 4 and a speaker grille 5 as shown in FIGS. 3 and 4.
なお、上記スピーカ3は、図5に示すように、所定の配列方向P(図5中で紙面に直交する方向)に沿って複数配設される磁石10及びコイル11を備えている。このスピーカ3は、フレーム7と、フレーム7に取り付けられる振動板8と、フレーム7に対して弾性的に支持されるヨーク9と、を備えている。このヨーク9内に複数の磁石10が収容されるとともに、振動板8上に複数のコイル11が取り付けられている。上記振動板8は、矩形平板状に形成されている。この振動板8は、フレーム7の裏面に両面テープや接着剤等で接合されている。また、ヨーク9は、強磁性体からなり、フレーム7の端部に支持された弾性部材12(例えば、板バネ等)に取り付けられている。 As shown in FIG. 5, the speaker 3 includes a plurality of magnets 10 and coils 11 arranged along a predetermined arrangement direction P (a direction perpendicular to the paper surface in FIG. 5). The speaker 3 includes a frame 7, a diaphragm 8 attached to the frame 7, and a yoke 9 that is elastically supported with respect to the frame 7. A plurality of magnets 10 are accommodated in the yoke 9, and a plurality of coils 11 are attached on the diaphragm 8. The diaphragm 8 is formed in a rectangular flat plate shape. The diaphragm 8 is bonded to the back surface of the frame 7 with a double-sided tape, an adhesive, or the like. The yoke 9 is made of a ferromagnetic material and is attached to an elastic member 12 (for example, a leaf spring) supported on the end of the frame 7.
上記磁石10は、S極が下方を向く磁石10とN極が下方を向く磁石10とが交互に隣り合うように配列されている。また、上記コイル11は、各磁石10による磁気回路と錯交するように配されている。これら各コイル11は、フレーム7に形成された開口7aを介して複数の磁石10のうちの下方にS極が向く磁石10と対向している。なお、上記スピーカ3では、振動板8のコイル11を挟む両側のうちの一方側で振幅が比較的大きく、他方側で振幅が比較的小さくなるものとする。 The magnets 10 are arranged so that the magnets 10 whose south poles face downward and magnets 10 whose north poles face downward are alternately adjacent. In addition, the coil 11 is arranged so as to intersect with a magnetic circuit formed by the magnets 10. Each of these coils 11 is opposed to the magnet 10 whose south pole faces downward among the plurality of magnets 10 through an opening 7 a formed in the frame 7. In the speaker 3, it is assumed that the amplitude is relatively large on one side of both sides of the diaphragm 11 of the diaphragm 8 and the amplitude is relatively small on the other side.
上記伝達部材4は、図3及び図4に示すように、ガラス繊維を含んだ樹脂材(例えば、ポリカーボネート)からなされている。この伝達部材4は、スピーカ3からの音を直接的に車室内側R1に出力するための開口4aが形成され、全体として枠板状(具体的に矩形枠板状)とされている。この開口4aは、天井材2に形成された出力用開口2aと対向するとともに、スピーカ3の振動板8で車室外側R2から覆われている。この伝達部材4の横幅W1(すなわち、配列方向Pと略直交する方向の横幅W1)は、スピーカ3の振動板8の横幅W2(すなわち、配列方向Pと略直交する方向の横幅W2)と略同じ値(例えば、約44mm)とされている。また、伝達部材4の板厚さtは約2mmとされている。 As shown in FIGS. 3 and 4, the transmission member 4 is made of a resin material (for example, polycarbonate) containing glass fibers. The transmission member 4 is formed with an opening 4a for directly outputting the sound from the speaker 3 to the vehicle interior side R1, and has a frame plate shape (specifically, a rectangular frame plate shape) as a whole. The opening 4 a faces the output opening 2 a formed in the ceiling material 2 and is covered from the vehicle interior outside R 2 with the diaphragm 8 of the speaker 3. The transmission member 4 has a lateral width W1 (that is, a lateral width W1 in a direction substantially orthogonal to the arrangement direction P) and a lateral width W2 of the diaphragm 8 of the speaker 3 (that is, a lateral width W2 in a direction substantially orthogonal to the arrangement direction P). The same value (for example, about 44 mm) is set. The plate thickness t of the transmission member 4 is about 2 mm.
また、上記伝達部材4は、振動板8の車室内側R1の面と天井材2の車室外側R2の面との間に配されている。この伝達部材4は、天井材2の車室外側R2の面に接着剤等で接合されている。そして、伝達部材4は、振動板8の振動を天井材2に伝達する機能を発揮する。なお、上記天井材2は、樹脂発泡体等からなる基材の車室内側の面に織布等からなる表皮を積層してなされている。 The transmission member 4 is disposed between the surface of the diaphragm 8 on the vehicle interior side R1 and the surface of the ceiling member 2 on the vehicle interior outside R2. The transmission member 4 is joined to the surface of the vehicle interior outside R2 of the ceiling material 2 with an adhesive or the like. The transmission member 4 exhibits a function of transmitting the vibration of the diaphragm 8 to the ceiling material 2. The ceiling material 2 is formed by laminating a skin made of woven fabric or the like on a surface of a base material made of a resin foam or the like on the vehicle interior side.
また、上記伝達部材4は、図5及び図6に示すように、上記配列方向Pと略平行な方向に延びる一対の片15a、15bと、一対の片15a、15bの長手方向の端部を連絡する一対の連絡片15c、15dと、を備えている。これら各片15a〜15dのそれぞれには、伝達部材4の外周縁部4bと内周縁部4cとを連絡するように線状に延びるスリット18(本発明に係る「脆弱部」として例示する。)が形成されている。このスリット18は、一方の片15aに形成される複数(図中2つ)の第1スリット18aと、他方の片15bに形成される複数(図中2つ)の第2スリット18bと、一方の連絡片15cに形成される単一の第3スリット18cと、他方の連絡片15dに形成される単一の第4スリット18dと、を備えている。これら第1〜第4スリット18a〜18bにより伝達部材4は平面視で複数(図中6つ)の領域に仕切られている。 5 and 6, the transmission member 4 includes a pair of pieces 15a and 15b extending in a direction substantially parallel to the arrangement direction P, and end portions in the longitudinal direction of the pair of pieces 15a and 15b. A pair of contact pieces 15c and 15d for contacting is provided. Each of these pieces 15a to 15d has a slit 18 extending linearly so as to connect the outer peripheral edge 4b and the inner peripheral edge 4c of the transmission member 4 (illustrated as “fragile part” according to the present invention). Is formed. The slit 18 includes a plurality of (two in the drawing) first slits 18a formed in one piece 15a, a plurality of (two in the drawing) second slits 18b formed in the other piece 15b, A single third slit 18c formed in the connecting piece 15c and a single fourth slit 18d formed in the other connecting piece 15d. The first to fourth slits 18a to 18b divide the transmission member 4 into a plurality of (six in the drawing) regions in plan view.
上記第1〜第4スリット18a〜18dのそれぞれは、伝達部材4の外周縁部4bから切り欠かれて内周縁部4cまで延びている。これら第1及び第2スリット18a、18bは、配列方向Pと略直交する方向に延びている。また、第3及び第4スリット18c、18dは、配列方向Pと平行な方向に延びている。さらに、隣接する第1スリット18aの配列方向Pの間隔L1は、隣接する第2スリット18bの配列方向Pの間隔L2より大きな値とされている。これにより、一方の片15aの剛性が他方の片15bの剛性より低くされるため、スピーカ3の振動板8の振幅の強弱に応じて共振点が好適にズラされる。なお、上記第1〜第4スリット18a〜18dの横幅Sは約2mmとされている。 Each of the first to fourth slits 18a to 18d is notched from the outer peripheral edge 4b of the transmission member 4 and extends to the inner peripheral edge 4c. The first and second slits 18 a and 18 b extend in a direction substantially orthogonal to the arrangement direction P. The third and fourth slits 18 c and 18 d extend in a direction parallel to the arrangement direction P. Further, the interval L1 in the arrangement direction P of the adjacent first slits 18a is set to a value larger than the interval L2 in the arrangement direction P of the adjacent second slits 18b. Thereby, since the rigidity of one piece 15a is made lower than the rigidity of the other piece 15b, the resonance point is suitably shifted according to the amplitude of the diaphragm 8 of the speaker 3. The lateral width S of the first to fourth slits 18a to 18d is about 2 mm.
上記伝達部材4の内周縁部4cには、図4に示すように、車室内側R1に向かって延びて天井材2の出力用開口2aの側面に対向又は接触する立壁21が設けられている。この立壁21は、スリット18a〜18dにより分断されず内周縁部4cの全周にわたって設けられ、全体として筒状とされている。また、立壁21には、図3に示すように、スピーカグリル5の後述の舌片が差し込まれる差込口22が形成されている。さらに、伝達部材4の差込口22と開口4aを挟む反対側には、スピーカグリル5を締結するためのネジ26が挿通する小孔23が形成されている。 As shown in FIG. 4, the inner peripheral edge 4 c of the transmission member 4 is provided with a standing wall 21 that extends toward the vehicle interior side R <b> 1 and faces or contacts the side surface of the output opening 2 a of the ceiling member 2. . This standing wall 21 is not divided by the slits 18a to 18d, and is provided over the entire circumference of the inner peripheral edge portion 4c, and has a cylindrical shape as a whole. Further, as shown in FIG. 3, an insertion port 22 into which a tongue piece described later of the speaker grill 5 is inserted is formed in the standing wall 21. Further, a small hole 23 through which a screw 26 for fastening the speaker grille 5 is inserted is formed on the opposite side of the transmission member 4 between the insertion port 22 and the opening 4a.
上記伝達部材4の各連絡片15c、15d上には、図3に示すように、車室外側R2に向かって突出する突起24が形成されている。これら各突起24にスピーカ3のフレーム7及び振動板8に形成された切欠部25が当接することで、伝達部材4に対してスピーカ3が位置決めされる。また、上記伝達部材4には、図4に示すように、振動板8を締結するためのネジ27が噛み合う複数(図3中で6つ)の金属製のナット28が埋設されている。これら各ナット28は、伝達部材4の成形時にインサート成形される。そして、振動板8に形成された貫通孔29に挿通されるネジ27を伝達部材4のナット28にねじ込むことで、スピーカ3と伝達部材4とが一体化される。 As shown in FIG. 3, a projection 24 is formed on each connecting piece 15c, 15d of the transmission member 4 so as to project toward the vehicle compartment outer side R2. The speaker 3 is positioned with respect to the transmission member 4 by contacting the notches 25 formed in the frame 7 of the speaker 3 and the diaphragm 8 with the projections 24. Further, as shown in FIG. 4, a plurality of (six in FIG. 3) metal nuts 28 with which screws 27 for fastening the diaphragm 8 are engaged are embedded in the transmission member 4. These nuts 28 are insert-molded when the transmission member 4 is molded. And the speaker 3 and the transmission member 4 are integrated by screwing the screw 27 inserted in the through-hole 29 formed in the diaphragm 8 into the nut 28 of the transmission member 4.
上記スピーカグリル5は、図3及び図4に示すように、樹脂材からなり、天井材2の出力用開口2aを覆うような矩形板状に形成されている。このスピーカグリル5には、音出力用の多数の貫通孔31が形成されている。また、スピーカグリル5の長手方向の一端側には、伝達部材4の差込口22に差し込まれる舌片32が設けられている。また、スピーカグリル5の長手方向の他端側には、車室外側R2に向かって突出するボス33が設けられている。そして、スピーカグリル5の舌片32を伝達部材4の差込口22に差し込んでから、伝達部材4の小孔23に挿通されるネジ26をスピーカグリル5のボス33にねじ込むことで、天井材2を挟んでスピーカグリル5と伝達部材4とが一体化される。 As shown in FIGS. 3 and 4, the speaker grill 5 is made of a resin material and is formed in a rectangular plate shape that covers the output opening 2 a of the ceiling material 2. The speaker grill 5 has a large number of through holes 31 for sound output. Further, a tongue piece 32 to be inserted into the insertion port 22 of the transmission member 4 is provided on one end side in the longitudinal direction of the speaker grill 5. Further, a boss 33 is provided on the other end side in the longitudinal direction of the speaker grill 5 so as to project toward the vehicle interior outside R2. Then, after inserting the tongue piece 32 of the speaker grill 5 into the insertion port 22 of the transmission member 4, the screw 26 inserted into the small hole 23 of the transmission member 4 is screwed into the boss 33 of the speaker grill 5, so that the ceiling material is obtained. The speaker grille 5 and the transmission member 4 are integrated with 2 therebetween.
(2)車載用スピーカ装置の作用
次に、上記構成の車載用スピーカ装置1の作用について説明する。上記スピーカ3によると、コイル11に音声信号(電気信号)が入力されると、コイル11に変動磁界が生じ、この変動磁界が磁石10の磁界と相互作用して振動板8が振動する。また、振動板8に対して磁石10が弾性的に支持されているため、振動板8の振動と同時に磁石10も振動する。これらによって音声信号が音に変換される。なお、上記スピーカ3において、磁石10の振動(特に、低周波の振動)はフレーム7を介して振動板8に伝搬される。
(2) Operation of In-Vehicle Speaker Device Next, the operation of the in-vehicle speaker device 1 having the above configuration will be described. According to the speaker 3, when an audio signal (electrical signal) is input to the coil 11, a variable magnetic field is generated in the coil 11, and this variable magnetic field interacts with the magnetic field of the magnet 10 to vibrate the diaphragm 8. Further, since the magnet 10 is elastically supported with respect to the diaphragm 8, the magnet 10 also vibrates simultaneously with the vibration of the diaphragm 8. As a result, the audio signal is converted into sound. In the speaker 3, the vibration of the magnet 10 (in particular, low-frequency vibration) is propagated to the diaphragm 8 through the frame 7.
そして、車載用スピーカ装置1によると、図4に示すように、振動板8で発生した音の一部(特に中高音)は、伝達部材4の開口4a及び天井材2の出力用開口2aを通って車室内側R1に直接的に出力される。このとき、伝達部材4の立壁21により天井材2への音の吸収が抑制される。さらに、振動板8で発生した音の一部(特に低音)は、伝達部材4で増幅されつつ天井材2に伝達されて天井材2の振動により車室内側R1に出力される。 According to the in-vehicle speaker device 1, as shown in FIG. 4, a part of the sound generated by the diaphragm 8 (especially middle and high sounds) passes through the opening 4 a of the transmission member 4 and the output opening 2 a of the ceiling material 2. It is output directly to the vehicle interior side R1. At this time, absorption of sound to the ceiling material 2 is suppressed by the standing wall 21 of the transmission member 4. Furthermore, a part of the sound (particularly low sound) generated by the diaphragm 8 is transmitted to the ceiling member 2 while being amplified by the transmission member 4 and is output to the vehicle interior side R <b> 1 by the vibration of the ceiling member 2.
(3)実施例の効果
以上より、本実施例の車載用スピーカ装置1によると、振動板8を備えるスピーカ3と、振動板8と天井材2との間に配されて振動板8の振動を天井材2に伝達する枠状の伝達部材4と、を備え、伝達部材4には、外周縁部4bと内周縁部4cとを連絡するように線状に延びるスリット18a〜18dが形成されている。このように、伝達部材4に線状のスリット18a〜18dを設定することで、伝達部材4で振動の共振点がズラされてビビリ音が低減される。よって、車両室内でより良好な音響を実現することができる。
(3) Effects of the Embodiment From the above, according to the vehicle-mounted speaker device 1 of the present embodiment, the vibration of the diaphragm 8 is arranged between the speaker 3 including the diaphragm 8, the diaphragm 8, and the ceiling material 2. And a frame-shaped transmission member 4 that transmits to the ceiling member 2. The transmission member 4 is formed with slits 18 a to 18 d that extend linearly so as to connect the outer peripheral edge 4 b and the inner peripheral edge 4 c. ing. Thus, by setting the linear slits 18 a to 18 d in the transmission member 4, the resonance point of vibration is shifted in the transmission member 4 and chatter noise is reduced. Therefore, better sound can be realized in the vehicle compartment.
また、本実施例では、脆弱部として、伝達部材4の外周縁部4bから切り欠かれて内周縁部4cまで延びるスリット18a〜18dを採用している。これにより、スリット18a〜18dによりビビリ音がより確実に低減される。特に、本実施例では、伝達部材4の内周縁部4cには、車室内側R1に向かって延びて天井材2に形成された出力用開口2aの側面に対向又は接触する立壁21が設けられているが、スリット18a〜18dにより天井材2への音遮蔽機能を有する立壁21が分断されない。 In the present embodiment, slits 18a to 18d that are notched from the outer peripheral edge 4b of the transmission member 4 and extend to the inner peripheral edge 4c are employed as the fragile parts. Thereby, chatter noise is more reliably reduced by the slits 18a to 18d. In particular, in the present embodiment, the inner peripheral edge 4c of the transmission member 4 is provided with a standing wall 21 that extends toward the vehicle interior side R1 and faces or contacts the side surface of the output opening 2a formed in the ceiling member 2. However, the standing wall 21 having a sound shielding function to the ceiling material 2 is not divided by the slits 18a to 18d.
また、本実施例では、スピーカ3は、所定の配列方向Pに沿って複数配列される磁石10及びコイル11を備え、伝達部材4は、一対の片15a、15bを備え、脆弱部は、複数の第1スリット18aと、複数の第2スリット18bと、を備え、隣接する第1スリット18aの配列方向Pの間隔L1と、隣接する第2スリット18bの配列方向Pの間隔L2と、が異なっている。これにより、伝達部材4の一対の片15a、15bの間で強度が異なることとなり、スピーカ3の振動板8の振幅の強弱に応じて共振点が好適にズラされ、ビビリ音がより確実に低減される。 Further, in this embodiment, the speaker 3 includes a plurality of magnets 10 and coils 11 arranged along a predetermined arrangement direction P, the transmission member 4 includes a pair of pieces 15a and 15b, and a plurality of fragile portions. The first slit 18a and the plurality of second slits 18b are provided, and the interval L1 between the adjacent first slits 18a in the arrangement direction P is different from the interval L2 between the adjacent second slits 18b in the arrangement direction P. ing. As a result, the strength differs between the pair of pieces 15a and 15b of the transmission member 4, the resonance point is suitably shifted according to the amplitude of the diaphragm 8 of the speaker 3, and chatter noise is more reliably reduced. Is done.
また、本実施例では、伝達部材4と振動板8とがネジ27で固定されており、伝達部材4には、ネジ27と噛み合うナット28が埋設されている。これにより、振動板8と伝達部材4との密着性が高められ、ビビリ音がより確実に低減される。特に、本実施例では、上記ナット28は、樹脂製の伝達部材4の成形時にインサート成形されるので、振動板8と伝達部材4との密着性がより高められる。 In this embodiment, the transmission member 4 and the diaphragm 8 are fixed with screws 27, and nuts 28 that engage with the screws 27 are embedded in the transmission member 4. Thereby, the adhesiveness of the diaphragm 8 and the transmission member 4 is improved, and chatter noise is more reliably reduced. In particular, in this embodiment, the nut 28 is insert-molded when the resin-made transmission member 4 is molded, so that the adhesion between the diaphragm 8 and the transmission member 4 is further improved.
さらに、本実施例では、伝達部材4の横幅W1は、振動板8の横幅W2と略同じである。これにより、伝達部材4の横幅W1が振動板8の横幅W2より大きな場合(図8(a)参照)と比べて、ビビリ音がより確実に低減される。 Furthermore, in this embodiment, the lateral width W1 of the transmission member 4 is substantially the same as the lateral width W2 of the diaphragm 8. Thereby, the chatter noise is more reliably reduced as compared with the case where the lateral width W1 of the transmission member 4 is larger than the lateral width W2 of the diaphragm 8 (see FIG. 8A).
(4)実験例及び比較例について
次に、実験例及び比較例に係る車載用スピーカ装置のスイープ試験結果について説明する。このスイープ試験(JIS C 1513)では、60秒の間で振動数を100〜500Hzまで変化させ、車載用スピーカ装置から1メートル離れた位置でマイクにより音圧を測定した。
(4) About Experimental Example and Comparative Example Next, the sweep test results of the in-vehicle speaker device according to the experimental example and the comparative example will be described. In this sweep test (JIS C 1513), the frequency was changed from 100 to 500 Hz in 60 seconds, and the sound pressure was measured with a microphone at a position 1 meter away from the vehicle-mounted speaker device.
<実験例1及び比較例1>
実験例1として、上記実施例の車載用スピーカ装置1と同じものを採用した。すなわち、伝達部材4(スリット18a〜18d有り、ナット28有り、横幅W1;44mm、板厚t;2mm)及びスピーカ3(振動板8の横幅W2;44mm)を採用した。一方、比較例1として、上記実施例の車載用スピーカ装置1を変更したものを採用した。すなわち、伝達部材4を変更したもの(スリット18a〜18d無し、ナット28有り、横幅W1;44mm、板厚t;2mm)及びスピーカ3(振動板8の横幅W2;44mm)を採用した。
<Experimental Example 1 and Comparative Example 1>
As Experimental Example 1, the same one as the vehicle-mounted speaker device 1 of the above embodiment was adopted. That is, the transmission member 4 (with slits 18a to 18d, with nut 28, lateral width W1; 44 mm, plate thickness t; 2 mm) and speaker 3 (lateral width W2 of diaphragm 8; 44 mm) were employed. On the other hand, as Comparative Example 1, a modification of the in-vehicle speaker device 1 of the above-described embodiment was adopted. In other words, a modified transmission member 4 (without slits 18a to 18d, with a nut 28, lateral width W1; 44 mm, plate thickness t; 2 mm) and speaker 3 (lateral width W2 of diaphragm 8; 44 mm) was employed.
実験例1のスイープ試験結果において、図7(a)に示すように、振動数350Hz(ビビリ音が発生し易い振動数)の音圧のピークを通るように直線P1を引く。この直線P1上において、各振動数の音圧がそれぞれ離れていることから、ビビリ音の発生率が低いことがわかる。一方、比較例1のスイープ試験結果において、図7(b)に示すように、振動数350Hzの音圧のピークを通るように直線P2を引く。この直線P2上において、振動数350Hzの音圧のピーク以外の各振動数の音圧がそれぞれ互いに近いことから、ビビリ音の発生率が高いことがわかる。 In the sweep test result of Experimental Example 1, as shown in FIG. 7A, a straight line P1 is drawn so as to pass through a sound pressure peak at a vibration frequency of 350 Hz (a vibration frequency at which chatter noise is likely to occur). Since the sound pressures at the respective frequencies are separated from each other on the straight line P1, it can be seen that the occurrence rate of chatter noise is low. On the other hand, in the sweep test result of Comparative Example 1, as shown in FIG. 7B, a straight line P2 is drawn so as to pass the peak of the sound pressure with a frequency of 350 Hz. On the straight line P2, since the sound pressures at the respective frequencies other than the peak of the sound pressure at the frequency of 350 Hz are close to each other, it can be seen that the occurrence rate of chatter noise is high.
<実験例2、3及び比較例2>
実験例2として、図8(a)に示すように、上記実施例の車載用スピーカ装置1を変更したものを採用した。すなわち、伝達部材4を変更したもの(スリット18a〜18d有り、ナット28無し、横幅W1;52mm、板厚t;2mm)及びスピーカ3(振動板8の横幅W2;44mm)を採用した。また、実験例3として、図8(b)に示すように、上記実施例の車載用スピーカ装置1を変更したものを採用した。すなわち、伝達部材4を変更したもの(スリット18a〜18d有り、ナット28無し、横幅W1;44mm、板厚t;2mm)及びスピーカ3(振動板8の横幅W2;44mm)を採用した。
<Experimental Examples 2 and 3 and Comparative Example 2>
As Experimental Example 2, as shown in FIG. 8A, a modification of the vehicle-mounted speaker device 1 of the above-described embodiment was adopted. In other words, a modified transmission member 4 (with slits 18a to 18d, no nut 28, lateral width W1; 52 mm, plate thickness t; 2 mm) and speaker 3 (lateral width W2 of diaphragm 8; 44 mm) were employed. Further, as Experimental Example 3, as shown in FIG. 8B, a modification of the in-vehicle speaker device 1 of the above-described embodiment was adopted. In other words, a modified transmission member 4 (with slits 18a to 18d, no nut 28, lateral width W1; 44 mm, plate thickness t; 2 mm) and speaker 3 (lateral width W2 of diaphragm 8; 44 mm) were employed.
さらに、比較例2として、上記実施例の車載用スピーカ装置1を変更したものを採用した。すなわち、伝達部材4を変更したもの(スリット18a〜18d無し、ナット28無し、横幅W1;52mm、板厚t;2mm)及びスピーカ3(振動板8の横幅W2;44mm)を採用した。 Furthermore, as the comparative example 2, a modified version of the in-vehicle speaker device 1 of the above embodiment was adopted. That is, the transmission member 4 with a modified structure (no slits 18a to 18d, no nut 28, lateral width W1; 52 mm, plate thickness t; 2 mm) and speaker 3 (lateral width W2 of the diaphragm 8; 44 mm) was employed.
比較例1のスイープ試験結果では、図9(a)に示す範囲Q1aにおいて、各振動数の山形状が鋭く明確にでていることから、ビビリ音の発生率が高いことがわかる。これに対して、実験例2、3のスイープ試験結果では、図9(b)(c)に示す範囲Q1b、Q1cにおいて、各振動数の山形状が緩やかであることから、ビビリ音の発生率が低いことがわかる。 In the sweep test result of Comparative Example 1, it can be seen that, in the range Q1a shown in FIG. 9A, the peak shape of each frequency appears sharply and clearly, and the occurrence rate of chatter noise is high. In contrast, in the sweep test results of Experimental Examples 2 and 3, in the ranges Q1b and Q1c shown in FIGS. Is low.
さらに、実験例2及び実験例3のスイープ試験結果を比べると、図9(b)(c)に示す範囲Q2b、Q2cにおいて、実験例2に比べて実験例3のほうが各振動数の音圧が低く抑えられている。すなわち、伝達部材4の横幅W1が振動板8の横幅W2と略同じである場合(実験例3;図8(b)参照)は、伝達部材4の横幅W1が振動板8の横幅W2より大きな場合(実験例2;図8(a)参照)と比べて、ビビリ音がより低減されることがわかる。 Further, when the sweep test results of Experimental Example 2 and Experimental Example 3 are compared, in the ranges Q2b and Q2c shown in FIGS. 9B and 9C, the sound pressure of Experimental Example 3 is higher than that of Experimental Example 2 at each frequency. Is kept low. That is, when the lateral width W1 of the transmission member 4 is substantially the same as the lateral width W2 of the diaphragm 8 (Experimental Example 3; see FIG. 8B), the lateral width W1 of the transmission member 4 is larger than the lateral width W2 of the diaphragm 8. It can be seen that chatter noise is further reduced as compared with the case (Experimental Example 2; see FIG. 8A).
尚、本発明においては、上記実施例に限られず、目的、用途に応じて本発明の範囲内で種々変更した実施例とすることができる。すなわち、上記実施例では、脆弱部として、伝達部材4の外周縁部4bから切り欠かれて内周縁部4cまで延びるスリット18a〜18dを例示したが、これに限定されず、例えば、図10(a)に示すように、伝達部材4の内周縁部4cから切り欠かれて外周縁部4bまで延びるスリット18’としてもよい。また、例えば、図10(b)に示すように、外周縁部4b及び内周縁部4cから切り欠かれることなく伝達部材4の厚さ方向に貫通した貫通孔36としてもよい。さらに、図10(c)に示すように、伝達部材4の厚さ方向に凹んだ溝部37としてもよい。この場合、伝達部材4の車室内側R1の表面4e側に溝部37を形成するとともに、伝達部材4の車室外側R2の表面4fをスピーカ取付面とすることが好ましい。ビビリ音をより低減できるためである。 In the present invention, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. That is, in the said Example, although slit 18a-18d notched from the outer periphery 4b of the transmission member 4 and extended to the inner periphery 4c was illustrated as a weak part, it is not limited to this, For example, FIG. As shown to a), it is good also as slit 18 'cut out from the inner peripheral part 4c of the transmission member 4 and extended to the outer peripheral part 4b. Further, for example, as shown in FIG. 10B, a through hole 36 penetrating in the thickness direction of the transmission member 4 without being cut out from the outer peripheral edge portion 4b and the inner peripheral edge portion 4c may be used. Further, as shown in FIG. 10C, a groove 37 that is recessed in the thickness direction of the transmission member 4 may be used. In this case, it is preferable that the groove portion 37 is formed on the surface 4e side of the vehicle interior side R1 of the transmission member 4 and the surface 4f of the vehicle interior outside R2 of the transmission member 4 is a speaker mounting surface. This is because chatter noise can be further reduced.
また、上記実施例では、直線状に延びる脆弱部(スリット18a〜18d)を例示したが、これに限定されず、例えば、曲線状、湾曲状、屈曲状等の線状に延びる脆弱部としてもよい。 Moreover, in the said Example, although the weak part (slit 18a-18d) extended linearly was illustrated, it is not limited to this, For example, as a weak part extended linearly, such as curvilinear form, curve shape, bending shape, etc. Good.
また、上記実施例では、面磁石10を利用して振動板8を振動させる平面スピーカ3を採用したが、これに限定されず、例えば、固定電極板の間に振動板を積層し、電極板への電圧を変化させることで振動板を振動させる静電式の平面スピーカを採用してもよい。また、伝達部材4の表面に接する振動板8を備える限り各種スピーカを採用してもよい。 Moreover, in the said Example, although the planar speaker 3 which vibrates the diaphragm 8 using the surface magnet 10 was employ | adopted, it is not limited to this, For example, a diaphragm is laminated | stacked between fixed electrode plates, An electrostatic flat speaker that vibrates the diaphragm by changing the voltage may be employed. Various speakers may be employed as long as the diaphragm 8 in contact with the surface of the transmission member 4 is provided.
また、上記実施例では、伝達部材4に埋設されたナット28にネジ27を螺合して伝達部材4とスピーカ3とを締結するようにしたが、これに限定されず、例えば、ナット28を備えずに、伝達部材4に形成された雌ネジにネジ27を螺合して伝達部材4とスピーカ3とを締結するようにしてもよい。さらに、上記実施例では、伝達部材4の成形時にインサート成形されるナット28を例示したが、これに限定されず、例えば、伝達部材4の成形後に取り付けられるナットとしてもよい。 In the above embodiment, the screw 27 is screwed into the nut 28 embedded in the transmission member 4 and the transmission member 4 and the speaker 3 are fastened. However, the present invention is not limited to this. Instead, the transmission member 4 and the speaker 3 may be fastened by screwing the screw 27 into the female screw formed on the transmission member 4. Furthermore, in the said Example, although the nut 28 insert-molded at the time of shaping | molding of the transmission member 4 was illustrated, it is not limited to this, For example, it is good also as a nut attached after shaping | molding of the transmission member 4. FIG.
また、上記実施例では、伝達部材4の横幅W1をスピーカ3の振動板8の横幅W2と略同じとしたが、これに限定されず、例えば、伝達部材4の横幅W1を振動板8の横幅W1より大きく又は小さくしてもよい。 In the above embodiment, the lateral width W1 of the transmission member 4 is substantially the same as the lateral width W2 of the diaphragm 8 of the speaker 3. However, the present invention is not limited to this, for example, the lateral width W1 of the transmission member 4 is the lateral width of the diaphragm 8. It may be larger or smaller than W1.
さらに、上記実施例では、車両天井材2(内装材)に取り付けられる車載用スピーカ装置1を例示したが、これに限定されず、例えば、内装材として、ドアトリム、ピラーガーニッシュ、ダッシュボード、インストルメントパネル、コンソールボックス、サンバイザ等に取り付けられる車載用スピーカ装置としてもよい。 Furthermore, in the said Example, although the vehicle-mounted speaker apparatus 1 attached to the vehicle ceiling material 2 (interior material) was illustrated, it is not limited to this, For example, as an interior material, a door trim, a pillar garnish, a dashboard, an instrument It is good also as a vehicle-mounted speaker apparatus attached to a panel, a console box, a sun visor, etc.
前述の例は単に説明を目的とするものでしかなく、本発明を限定するものと解釈されるものではない。本発明を典型的な実施形態の例を挙げて説明したが、本発明の記述および図示において使用された文言は、限定的な文言ではなく説明的および例示的なものであると理解される。ここで詳述したように、その形態において本発明の範囲または精神から逸脱することなく、添付の特許請求の範囲内で変更が可能である。ここでは、本発明の詳述に特定の構造、材料および実施例を参照したが、本発明をここにおける開示事項に限定することを意図するものではなく、むしろ、本発明は添付の特許請求の範囲内における、機能的に同等の構造、方法、使用の全てに及ぶものとする。 The foregoing examples are for illustrative purposes only and are not to be construed as limiting the invention. Although the invention has been described with reference to exemplary embodiments, it is to be understood that the language used in the description and illustration of the invention is illustrative and exemplary rather than limiting. As detailed herein, changes may be made in its form within the scope of the appended claims without departing from the scope or spirit of the invention. Although specific structures, materials and examples have been referred to in the detailed description of the invention herein, it is not intended to limit the invention to the disclosure herein, but rather, the invention is claimed. It covers all functionally equivalent structures, methods and uses within the scope.
本発明は上記で詳述した実施形態に限定されず、本発明の請求項に示した範囲で様々な変形または変更が可能である。 The present invention is not limited to the embodiments described in detail above, and various modifications or changes can be made within the scope of the claims of the present invention.
乗用車、バス、トラック等の他、列車、汽車等の鉄道車両、建設車両、農業車両、産業車両などの車両の内装材に取り付けられる車載用スピーカ装置に関する技術として広く利用される。 In addition to passenger cars, buses, trucks, etc., it is widely used as a technology related to in-vehicle speaker devices that are attached to vehicle interior materials such as railway vehicles such as trains and trains, construction vehicles, agricultural vehicles, and industrial vehicles.
1;車載用スピーカ装置、2;天井材、3;スピーカ、4;伝達部材、4b;外周縁部、4c;内周縁部、7;フレーム、8;振動板、9;ヨーク、10;磁石、11;コイル、15a,15b;一対の片、18a〜18d,18’;スリット、27;ネジ、28;ナット、36;貫通孔、37;溝部、L1;第1スリットの間隔、L2;第2スリットの間隔、P;所定の配列方向、W1;伝達部材の横幅、W2;振動板の横幅。 DESCRIPTION OF SYMBOLS 1; Car-mounted speaker apparatus, 2; Ceiling material, 3; Speaker, 4; Transmission member, 4b; Outer peripheral edge part, 4c; Inner peripheral edge part, 7: Frame, 8: Diaphragm, 9; 11; Coil, 15a, 15b; A pair of pieces, 18a to 18d, 18 '; Slit, 27; Screw, 28; Nut, 36; Through-hole, 37; Groove, L1; First slit interval, L2; Slit spacing, P: predetermined arrangement direction, W1: width of transmission member, W2: width of diaphragm.
Claims (5)
振動板を備えるスピーカと、
前記振動板と前記内装材との間に配されて前記振動板の振動を前記内装材に伝達する枠状の伝達部材と、を備え、
前記伝達部材には、外周縁部と内周縁部とを連絡するように線状に延びる脆弱部が形成されていることを特徴とする車載用スピーカ装置。 An in-vehicle speaker device attached to a vehicle interior material,
A speaker having a diaphragm;
A frame-shaped transmission member that is arranged between the diaphragm and the interior material and transmits the vibration of the diaphragm to the interior material;
The in-vehicle speaker device characterized in that the transmitting member is formed with a weakened portion extending linearly so as to connect the outer peripheral edge portion and the inner peripheral edge portion.
前記伝達部材は、前記配列方向と略平行な方向に延びる一対の片を備え、
前記脆弱部は、前記一対の片のうちの一方の片に前記配列方向と略直交する方向に延びて形成される複数の第1脆弱部と、他方の片に前記配列方向と略直交する方向に延びて形成される複数の第2脆弱部と、を備え、
隣接する前記第1脆弱部の前記配列方向の間隔と、隣接する前記第2脆弱部の前記配列方向の間隔と、が異なっている請求項1又は2に記載の車載用スピーカ装置。 The speaker includes a plurality of magnets and coils arranged along a predetermined arrangement direction,
The transmission member includes a pair of pieces extending in a direction substantially parallel to the arrangement direction,
The fragile portion includes a plurality of first fragile portions formed in one of the pair of pieces so as to extend in a direction substantially orthogonal to the arrangement direction, and a direction in which the other piece is substantially orthogonal to the arrangement direction. A plurality of second weakened portions formed extending to
The in-vehicle speaker device according to claim 1, wherein an interval in the arrangement direction of the adjacent first weak parts is different from an interval in the arrangement direction of the adjacent second weak parts.
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