JP2017030730A - Sound insulation structure for motorcar belt line part and motorcar door glass - Google Patents

Sound insulation structure for motorcar belt line part and motorcar door glass Download PDF

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JP2017030730A
JP2017030730A JP2016111692A JP2016111692A JP2017030730A JP 2017030730 A JP2017030730 A JP 2017030730A JP 2016111692 A JP2016111692 A JP 2016111692A JP 2016111692 A JP2016111692 A JP 2016111692A JP 2017030730 A JP2017030730 A JP 2017030730A
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door glass
viscoelastic member
sound insulation
insulation structure
door
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JP2016111692A
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JP6699367B2 (en
Inventor
山田　大介
Daisuke Yamada
大介 山田
駿介 定金
Shunsuke Sadakane
駿介 定金
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AGC Inc
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Asahi Glass Co Ltd
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Priority to EP16001667.1A priority Critical patent/EP3135518B1/en
Priority to US15/223,528 priority patent/US10279666B2/en
Priority to CN201610613278.5A priority patent/CN106394191B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/08—Windows; Windscreens; Accessories therefor arranged at vehicle sides
    • B60J1/12—Windows; Windscreens; Accessories therefor arranged at vehicle sides adjustable
    • B60J1/16—Windows; Windscreens; Accessories therefor arranged at vehicle sides adjustable slidable
    • B60J1/17—Windows; Windscreens; Accessories therefor arranged at vehicle sides adjustable slidable vertically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/0411—Beltline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Window Of Vehicle (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a sound insulation structure for motorcar belt line part and motorcar door glass used in the sound insulation structure which suppress invasion of sound from outside of the motorcar via belt line part and generation of sound due to vibration of door glass itself.SOLUTION: There is provided a sound insulation structure along with motorcar belt line for sound insulation between a door panel and a door glass. The door panel comprises 2 panel plates facing each other. The door glass is arranged between 2 panel plates in an elevatable manner so as to be opened and closed. The door glass comprises first viscoelastic member arranged on at least one main surface of the door glass at its lower section. Under a state where the door glass is closed, the first viscoelastic member is held by an arrangement region of the first viscoelastic member on the door glass and a part of surface of the panel plates opposing to one main surface.SELECTED DRAWING: Figure 2

Description

本発明は、自動車のベルトライン部遮音構造および該遮音構造に用いる自動車用ドアガラスに関する。   The present invention relates to a belt line part sound insulation structure of an automobile and an automobile door glass used for the sound insulation structure.

従来、自動車の車内の遮音性を高める方法のひとつとして、自動車のベルトラインに沿って遮音構造を設ける方法がとられている。このような遮音構造として、例えば、特許文献１には、ドアガラスの閉時に、ドアパネルに取付けられたアウターシール部およびインナーシール部の下端部と、ドアガラスの下端部に対応する部分との一方に、遮音材を設けると共に、他方に該遮音材に弾接する突起を設けてなる遮音構造が開示されている。   2. Description of the Related Art Conventionally, as one method for improving the sound insulation in a vehicle, a method of providing a sound insulation structure along the belt line of the vehicle has been taken. As such a sound insulation structure, for example, in Patent Document 1, when the door glass is closed, one of an outer seal portion attached to the door panel and a lower end portion of the inner seal portion and a portion corresponding to the lower end portion of the door glass is disclosed. In addition, there is disclosed a sound insulation structure in which a sound insulation material is provided and a projection elastically contacting the sound insulation material is provided on the other side.

特許文献１に記載された遮音構造では、ドアガラスの閉時に、ドアパネル、具体的にはドアパネルに設けられたシール部材とドアガラスの間の間隙を塞ぐことで車外からの音の侵入を阻止しようとしたものであり、相応の遮音効果が得られている。しかしながら、自動車車内の騒音には、車外から空気伝搬により侵入する音のほかに、ドアガラスを含む各種部材が振動することで発生する音が含まれる。特にドアガラスの振動を抑えることで車内の遮音性が高められることが期待されるが、特許文献１の遮音構造ではドアガラスの振動への対応が考慮されておらず、高いレベルの遮音性能が得られていない。   In the sound insulation structure described in Patent Document 1, when the door glass is closed, the door panel, specifically, the gap between the seal member provided on the door panel and the door glass is blocked to prevent sound from entering from the outside of the vehicle. The sound insulation effect corresponding to this is obtained. However, the noise in the car includes sound generated by vibrations of various members including the door glass, in addition to sound entering from outside the vehicle by air propagation. In particular, it is expected that the sound insulation in the vehicle is improved by suppressing the vibration of the door glass. However, the sound insulation structure of Patent Document 1 does not consider the response to the vibration of the door glass, and has a high level of sound insulation performance. Not obtained.

特開２００１−２１９７３８号公報JP 2001-219738 A

本発明は、上記観点からなされたものであって、ベルトライン部を介した車外からの音の侵入およびドアガラス自体の振動による音の発生を抑制することで、ドアガラスの閉時における自動車内の遮音状態を高いレベルに向上可能な自動車のベルトライン部遮音構造および該遮音構造に用いる自動車用ドアガラスの提供を目的とする。   The present invention has been made from the above viewpoint, and suppresses the generation of sound due to intrusion of sound from outside the vehicle via the belt line portion and vibration of the door glass itself, so that the interior of the automobile when the door glass is closed. An object of the present invention is to provide an automotive beltline sound insulation structure capable of improving the sound insulation state of the vehicle to a high level and an automobile door glass used for the sound insulation structure.

本発明の自動車のベルトライン部遮音構造は、自動車のベルトラインに沿って、ドアパネルとドアガラスとの間を遮音する遮音構造であって、前記ドアパネルは互いに対向する２枚のパネル板を備え、前記ドアガラスは前記２枚のパネル板の間に昇降可能に配設されることで開閉自在であり、前記ドアガラスの少なくとも一方の主面の下方部に装着された第１の粘弾性部材を備え、前記ドアガラスの閉時に、前記第１の粘弾性部材が、前記ドアガラスにおける前記第１の粘弾性部材の装着領域と、前記一方の主面に対向する前記パネル板の面の一部で拘束されることを特徴とする。   The automobile beltline part sound insulation structure of the present invention is a sound insulation structure for insulating between the door panel and the door glass along the automobile beltline, and the door panel includes two panel plates facing each other, The door glass is freely opened and closed by being disposed between the two panel plates so as to be movable up and down, and includes a first viscoelastic member attached to a lower portion of at least one main surface of the door glass, When the door glass is closed, the first viscoelastic member is restrained by a part of the panel plate facing the one main surface and a mounting region of the first viscoelastic member in the door glass. It is characterized by being.

本発明の自動車用ドアガラスは、本発明のベルトライン部遮音構造に用いられる粘弾性部材付きガラス板からなることを特徴とする。   The door glass for automobiles of the present invention is characterized by comprising a glass plate with a viscoelastic member used in the beltline part sound insulation structure of the present invention.

本発明の自動車のベルトライン部遮音構造は、ベルトライン部を介して車外から侵入する音の量を抑制するとともにドアガラス自体の振動による音の発生を抑制するという高い遮音性能を有する。これにより、本発明の自動車のベルトライン部遮音構造を用いれば、ドアガラス閉時の自動車内において高いレベルの遮音状態が達成できる。
本発明の自動車用ドアガラスは、自動車に装着された際に、ドアガラス閉時の自動車内において高いレベルの遮音状態を達成できる本発明の自動車のベルトライン部遮音構造を構築可能である。 The automobile beltline portion sound insulation structure of the present invention has a high sound insulation performance of suppressing the amount of sound entering from outside the vehicle via the beltline portion and suppressing the generation of sound due to vibration of the door glass itself. Thereby, if the beltline part sound-insulation structure of the automobile of the present invention is used, a high-level sound insulation state can be achieved in the automobile when the door glass is closed.
The automobile door glass of the present invention can construct a belt line part sound insulation structure of the automobile of the present invention that can achieve a high level of sound insulation in the automobile when the door glass is closed when mounted on the automobile.

本発明のベルトライン部遮音構造を有する自動車の側面図である。It is a side view of the motor vehicle which has the belt line part sound-insulation structure of this invention. 本発明のベルトライン部遮音構造の一例において、ドアガラス閉時の状態を概略的に示す図１のＡ−Ａ線断面図である。In an example of the belt line part sound-insulation structure of this invention, it is the sectional view on the AA line of FIG. 1 which shows the state at the time of door glass closing. 本発明の自動車用ドアガラスの一例を概略的に示す断面図である。It is sectional drawing which shows roughly an example of the door glass for motor vehicles of this invention. 本発明の自動車用ドアガラスの他の例を概略的に示す断面図である。It is sectional drawing which shows roughly the other example of the door glass for motor vehicles of this invention. 本発明の自動車用ドアガラスの他の例を概略的に示す断面図である。It is sectional drawing which shows roughly the other example of the door glass for motor vehicles of this invention.

以下に、本発明のベルトライン部遮音構造（以下、単に「遮音構造」ともいう。）および自動車用ドアガラス（以下、単に「ドアガラス」ともいう。）の実施の形態を、図面を参照しながら説明する。なお、本発明は、これらの実施形態に限定されるものではなく、これらの実施形態を、本発明の趣旨および範囲を逸脱することなく、変更または変形することができる。   Embodiments of a belt line portion sound insulation structure (hereinafter also simply referred to as “sound insulation structure”) and a vehicle door glass (hereinafter also simply referred to as “door glass”) according to the present invention will be described below with reference to the drawings. While explaining. Note that the present invention is not limited to these embodiments, and these embodiments can be changed or modified without departing from the spirit and scope of the present invention.

図１は、図２に示す本発明の遮音構造が設けられる自動車のベルトライン部の位置を示す自動車の側面図である。図２は、本発明のベルトライン部遮音構造の一例において、ドアガラス閉時の状態を概略的に示す図であり、図１のＡ−Ａ線断面図である。   FIG. 1 is a side view of an automobile showing the position of a belt line portion of the automobile provided with the sound insulation structure of the present invention shown in FIG. FIG. 2 is a view schematically showing a state when the door glass is closed in the example of the belt line portion sound insulation structure of the present invention, and is a cross-sectional view taken along line AA of FIG.

本実施形態の遮音構造は、図１に示す実施形態の一例であるベルトライン部に設けられる。図１に示す自動車１０において、前後のサイドドアＳは、それぞれドアパネル１２とドアパネル１２に昇降可能に配設されたドアガラス１１からなり、図１はドアガラス１１が閉じた状態の自動車１０を示している。   The sound insulation structure of the present embodiment is provided in a belt line portion which is an example of the embodiment shown in FIG. In the automobile 10 shown in FIG. 1, the front and rear side doors S are each composed of a door panel 12 and a door glass 11 that can be moved up and down on the door panel 12, and FIG. 1 shows the automobile 10 with the door glass 11 closed. ing.

ドアパネル１２は互いに対向する２枚のパネル板（図示せず）を備え、ドアガラス１１は２枚のパネル板の間に昇降可能に配設されることで開閉自在である。なお、ドアガラス１１が開閉自在であるとは、ドアガラス１１が昇降することでサイドドアＳの上方に位置する窓開口部Ｗの開閉が自在であることを意味する。すなわち、ドアガラス１１の閉時には窓開口部Ｗはドアガラス１１により閉じられ、ドアガラス１１の開時には窓開口部Ｗは開かれた状態となる。本明細書においては、ドアパネル１２が有する２枚のパネル板のうち車内側に位置するパネル板をインナーパネル、車外側に位置するパネル板をアウターパネルという。   The door panel 12 includes two panel plates (not shown) opposed to each other, and the door glass 11 can be opened and closed by being disposed between the two panel plates so as to be movable up and down. The door glass 11 being openable / closable means that the window opening W located above the side door S can be opened / closed by the door glass 11 being raised and lowered. That is, the window opening W is closed by the door glass 11 when the door glass 11 is closed, and the window opening W is opened when the door glass 11 is opened. In the present specification, of the two panel plates of the door panel 12, the panel plate positioned on the vehicle inner side is referred to as an inner panel, and the panel plate positioned on the vehicle outer side is referred to as an outer panel.

自動車１０において、ベルトラインＬは前後のドアパネル１２の上端を結ぶラインである。本発明において、ベルトラインＬに沿ってドアパネル１２の上端から下方に所定の幅を有する領域をベルトライン部という。図１ではこの幅の下端をＬｂとして示した。すなわち、ベルトライン部はベルトラインＬとＬｂとで挟まれた領域を指す。自動車１０のサイドドアＳは、ドアガラス１１閉時においてベルトライン部に遮音のための構造が得られる構成である。   In the automobile 10, the belt line L is a line connecting the upper ends of the front and rear door panels 12. In the present invention, a region having a predetermined width downward from the upper end of the door panel 12 along the belt line L is referred to as a belt line portion. In FIG. 1, the lower end of this width is shown as Lb. That is, the belt line portion indicates a region sandwiched between the belt lines L and Lb. The side door S of the automobile 10 is configured such that a structure for sound insulation is obtained in the belt line portion when the door glass 11 is closed.

図２に示すベルトライン部の遮音構造について説明する。ドアパネル１２は互いに対向する２枚のパネル板としてインナーパネル１２１およびアウターパネル１２２を備え、ドアガラス１１はインナーパネル１２１およびアウターパネル１２２の間に昇降可能に配設されている。インナーパネル１２１およびアウターパネル１２２はそれぞれ対向面のベルトラインに沿った領域であるベルトライン部にこれらとドアガラス１１の間をシールするインナーシール部材１４１およびアウターシール部材１４２を有する。   The sound insulation structure of the belt line part shown in FIG. 2 will be described. The door panel 12 includes an inner panel 121 and an outer panel 122 as two panel plates facing each other, and the door glass 11 is disposed between the inner panel 121 and the outer panel 122 so as to be movable up and down. Each of the inner panel 121 and the outer panel 122 has an inner seal member 141 and an outer seal member 142 that seal the gap between the inner panel 121 and the outer panel 122 in a belt line portion that is a region along the belt line on the opposite surface.

インナーシール部材１４１は、ドアガラス１１側の上下に２個のリップ部、すなわち上部インナーリップ４１１および下部インナーリップ４１２を有し、アウターシール部材１４２は同様にドアガラス１１側に上部アウターリップ４２１および下部アウターリップ４２２を有する。インナーシール部１４１およびアウターシール部１４２は、エチレン・プロピレンゴム（ＥＰＤＭゴム）等の合成ゴムやポリオレフィン系エラストマー等の熱可塑性エラストマー等で形成される。なお、図２中の矢印Ｐは、ドアガラス１１を閉める際のドアガラス１１の進行方向を示す。   The inner seal member 141 has two lip portions on the upper and lower sides on the door glass 11 side, that is, an upper inner lip 411 and a lower inner lip 412, and the outer seal member 142 similarly has an upper outer lip 421 on the door glass 11 side and It has a lower outer lip 422. The inner seal portion 141 and the outer seal portion 142 are formed of a synthetic rubber such as ethylene / propylene rubber (EPDM rubber), a thermoplastic elastomer such as a polyolefin-based elastomer, or the like. Note that an arrow P in FIG. 2 indicates the traveling direction of the door glass 11 when the door glass 11 is closed.

［遮音構造］
ドアガラス１１は、図２にその断面図が示されるように、ドアガラス本体１５と、第１の粘弾性部材１３（粘弾性部材）を備えている。第１の粘弾性部材１３は、ドアガラス本体１５の車内側の主面の下方部に装着されている。そして、図２に示すように、ドアガラス１１の閉時に、第１の粘弾性部材１３が、ドアガラス１１における第１の粘弾性部材１３の装着領域と、インナーパネル１２１のドアガラス１１側の面の一部で拘束される。ドアガラス１１の下方部とは、ドアガラス１１の閉時に、第１の粘弾性部材１３が、ドアガラス１１と、インナーパネル１２１のドアガラス１１側の面の一部で拘束され得る領域である。 [Sound insulation structure]
The door glass 11 includes a door glass main body 15 and a first viscoelastic member 13 (viscoelastic member) as shown in a sectional view in FIG. The first viscoelastic member 13 is attached to the lower portion of the main surface of the door glass main body 15 on the vehicle inner side. As shown in FIG. 2, when the door glass 11 is closed, the first viscoelastic member 13 is attached to the mounting region of the first viscoelastic member 13 in the door glass 11 and the door glass 11 side of the inner panel 121. Restrained by part of the face. The lower part of the door glass 11 is an area where the first viscoelastic member 13 can be restrained by the door glass 11 and a part of the surface of the inner panel 121 on the door glass 11 side when the door glass 11 is closed. .

図２に示す遮音構造によれば、第１の粘弾性部材１３が、ドアガラス１１とインナーパネル１２１の間に挟まれ、両者に密接して、車内を密閉可能としている。そのため、ドアガラスの閉時においてベルトライン部を介して車内に侵入する音の量を充分に抑制することができる。また、第１の粘弾性部材１３が、ドアガラス１１とインナーパネル１２１間に拘束されることで拘束型の制振構造を形成している。ここで「拘束」とは、第１の粘弾性部材１３が、ドアガラス１１とインナーパネル１２１間に挟まれ、第１の粘弾性部材１３の動きが制限された状態を意味する。そのため、ドアガラス本体１５の振動を充分に抑制し、ドアガラスの閉時の車内における高い遮音効果が実現できる。なお、ドアガラスの振動の原因としては、ドアパネルからドアガラスへのロードノイズの伝播、エンジンノイズの伝播等が挙げられる。本発明のベルトライン部遮音構造によれば、いずれの原因におけるドアガラスの振動も充分に抑制可能である。   According to the sound insulation structure shown in FIG. 2, the first viscoelastic member 13 is sandwiched between the door glass 11 and the inner panel 121, and is in close contact with both so that the inside of the vehicle can be sealed. Therefore, the amount of sound that enters the vehicle via the belt line portion when the door glass is closed can be sufficiently suppressed. Further, the first viscoelastic member 13 is constrained between the door glass 11 and the inner panel 121 to form a constrained vibration damping structure. Here, “restraint” means a state in which the first viscoelastic member 13 is sandwiched between the door glass 11 and the inner panel 121 and the movement of the first viscoelastic member 13 is restricted. Therefore, the vibration of the door glass body 15 can be sufficiently suppressed, and a high sound insulation effect in the vehicle when the door glass is closed can be realized. Note that the cause of the vibration of the door glass includes propagation of road noise from the door panel to the door glass, propagation of engine noise, and the like. According to the sound insulation structure of the belt line portion of the present invention, the vibration of the door glass due to any cause can be sufficiently suppressed.

（第１の粘弾性部材１３の物性）
第１の粘弾性部材１３は、粘弾性体からなり、遮音性と制振性を有する。第１の粘弾性部材１３は、２０℃におけるヤング率Ｅ（Ｎ／ｍ２）と、２０℃、振動数４０００Ｈｚにおける損失係数ｔａｎδが、下記式（１）を満たすことが好ましい。以下、特に断りのない限り、ヤング率は２０℃における値を示し、損失係数は、２０℃、振動数４０００Ｈｚにおける値を示すものとする。 (Physical properties of the first viscoelastic member 13)
The 1st viscoelastic member 13 consists of a viscoelastic body, and has sound-insulating property and damping property. The first viscoelastic member 13 preferably has a Young's modulus E (N / m 2 ) at 20 ° C. and a loss coefficient tan δ at 20 ° C. and a frequency of 4000 Hz satisfy the following formula (1). Hereinafter, unless otherwise specified, the Young's modulus indicates a value at 20 ° C., and the loss coefficient indicates a value at 20 ° C. and a frequency of 4000 Hz.

Figure 2017030730
Figure 2017030730

上記において、ヤング率Ｅは、第１の粘弾性部材１３の硬さを計る指標であり、損失係数ｔａｎδは、第１の粘弾性部材１３の粘性を計る指標である。ヤング率Ｅと損失係数ｔａｎδが上記式（１）を満たす範囲であることで、第１の粘弾性部材１３は、音の侵入阻止効果と、ドアガラス１１に対する制振効果とをバランスよく発揮して、優れた遮音効果を有するものとなる。   In the above, the Young's modulus E is an index for measuring the hardness of the first viscoelastic member 13, and the loss coefficient tan δ is an index for measuring the viscosity of the first viscoelastic member 13. When the Young's modulus E and the loss coefficient tan δ are in a range satisfying the above formula (1), the first viscoelastic member 13 exhibits a sound intrusion prevention effect and a vibration damping effect on the door glass 11 in a well-balanced manner. Therefore, it has an excellent sound insulation effect.

粘弾性部材３１は、上記損失係数ｔａｎδが、下記式（２）を満たすことがより好ましい。

Figure 2017030730
上記式（１）および（２）の関係を満たす粘弾性部材３１としては、例えば早川ゴム株式会社製 商品名：ＭＴＳ−２０が挙げられるが、これに限定されない。 As for the viscoelastic member 31, it is more preferable that the loss coefficient tan δ satisfies the following formula (2).
Figure 2017030730
 Examples of the viscoelastic member 31 satisfying the relationship of the above formulas (1) and (2) include, but are not limited to, product name: MTS-20 manufactured by Hayakawa Rubber Co., Ltd.

第１の粘弾性部材１３を形成する粘弾性を有する材料（以下、「粘弾性材料」ともいう）として具体的には、ＥＰＤＭゴムなどの合成ゴム、ポリオレフィン系エラストマーなどの熱可塑性エラストマー樹脂、ポリウレタン樹脂、ポリ塩化ビニル樹脂、エポキシ樹脂、シリコーンゲル、ポリノルボルネン等を用いることができる。   Specifically, the viscoelastic material forming the first viscoelastic member 13 (hereinafter also referred to as “viscoelastic material”) includes synthetic rubber such as EPDM rubber, thermoplastic elastomer resin such as polyolefin elastomer, polyurethane, and the like. Resin, polyvinyl chloride resin, epoxy resin, silicone gel, polynorbornene, or the like can be used.

また、第１の粘弾性部材１３は、発泡体で構成されていてもよい。第１の粘弾性部材１３が発泡体で構成される場合、第１の粘弾性部材１３は、上記粘弾性材料を常法により発泡させて形成することができる。これにより、第１の粘弾性部材１３のヤング率や損失係数を所望の値に調節することができる。   Moreover, the 1st viscoelastic member 13 may be comprised with the foam. When the 1st viscoelastic member 13 is comprised with a foam, the 1st viscoelastic member 13 can be formed by foaming the said viscoelastic material by a conventional method. Thereby, the Young's modulus and loss factor of the 1st viscoelastic member 13 can be adjusted to a desired value.

また、第１の粘弾性部材１３を構成する粘弾性材料は、有機充填材、鉱質充填材等の充填材を含有してもよい。有機充填材としては、例えば、架橋ポリエステル、ポリスチレン、スチレン−アクリル共重合体樹脂、尿素樹脂等の樹脂から形成された樹脂粒子、合成繊維、天然繊維が用いられる。鉱質充填材としては、例えば、炭酸カルシウム、酸化カルシウム、水酸化マグネシウム、酸化マグネシウム、炭酸マグネシウム、水酸化アルミニウム、硫酸バリウム、酸化バリウム、酸化チタン、酸化鉄、酸化亜鉛、炭酸亜鉛、ろう石クレー、カオリンクレー、焼成クレー等のクレー、マイカ、ケイソウ土、カーボンブラック、シリカ、ガラス繊維、カーボン繊維、繊維状フィラー、ガラスバルーン等の無機フィラー等が用いられる。このように、充填材を含有させることで、第１の粘弾性部材１３のヤング率や損失係数を所望の値に調節することができる。   Moreover, the viscoelastic material which comprises the 1st viscoelastic member 13 may contain fillers, such as an organic filler and a mineral filler. As the organic filler, for example, resin particles formed from a resin such as cross-linked polyester, polystyrene, styrene-acrylic copolymer resin, urea resin, synthetic fibers, and natural fibers are used. Examples of mineral fillers include calcium carbonate, calcium oxide, magnesium hydroxide, magnesium oxide, magnesium carbonate, aluminum hydroxide, barium sulfate, barium oxide, titanium oxide, iron oxide, zinc oxide, zinc carbonate, and calcareous clay. Inorganic fillers such as clay such as kaolin clay and calcined clay, mica, diatomaceous earth, carbon black, silica, glass fiber, carbon fiber, fibrous filler, and glass balloon are used. Thus, the Young's modulus and loss factor of the 1st viscoelastic member 13 can be adjusted to a desired value by containing a filler.

（粘弾性部材の構造）
第１の粘弾性部材１３は、単一の層からなる単層構造または複数の層からなる積層構造である。第１の粘弾性部材１３は、単層構造である場合、上記粘弾性材料のみで形成すればよい。第１の粘弾性部材１３は、積層構造である場合、例えばドアガラス側から車内側の方向に積層される。第１の粘弾性部材１３は、積層構造の場合、積層構造全体のヤング率と損失係数の関係が上記式（１）を満たせばよい。第１の粘弾性部材１３は、積層構造の場合、粘弾性材料で形成された軟質層の少なくとも一方の表面に、軟質層以外のその他の層を備える２層の積層構造、または、軟質層の両表面に上記その他の層を備える３層以上の積層構造で構成することができる。 (Structure of viscoelastic member)
The first viscoelastic member 13 has a single layer structure composed of a single layer or a laminated structure composed of a plurality of layers. When the first viscoelastic member 13 has a single-layer structure, the first viscoelastic member 13 may be formed of only the viscoelastic material. When the first viscoelastic member 13 has a laminated structure, the first viscoelastic member 13 is laminated, for example, in the direction from the door glass side to the vehicle interior side. When the first viscoelastic member 13 has a laminated structure, the relationship between the Young's modulus and the loss coefficient of the entire laminated structure may satisfy the above formula (1). In the case of a laminated structure, the first viscoelastic member 13 has a two-layer laminated structure including other layers other than the soft layer on at least one surface of the soft layer formed of a viscoelastic material, or a soft layer It can be comprised by the laminated structure of 3 or more layers provided with the said other layer on both surfaces.

第１の粘弾性部材１３を、３層以上の積層構造で構成する場合には、最表層（ドアガラス１１またはインナーパネル１２１に接する層）となる上記その他の層にドアガラス１１またはインナーパネル１２１との密着性を持たせてもよい。これにより、第１の粘弾性部材１３と、ドアガラス１１またはインナーパネル１２１との密着性を高めることができるので、隙間からの音の侵入を阻止することができる。さらに、より安定した拘束型の制振構造を形成できるため、遮音効果を向上させることができる。   When the first viscoelastic member 13 has a laminated structure of three or more layers, the door glass 11 or the inner panel 121 is added to the other layer which is the outermost layer (a layer in contact with the door glass 11 or the inner panel 121). Adhesiveness may be given. Thereby, since the adhesiveness of the 1st viscoelastic member 13 and the door glass 11 or the inner panel 121 can be improved, the penetration | invasion of the sound from a clearance gap can be prevented. Furthermore, since a more stable restraint type vibration damping structure can be formed, the sound insulation effect can be improved.

このような最表層を構成する材料としては、アルミ、ステンレス、鋼板鋼等の箔、あるいは、耐熱性硬質樹脂薄シート等を用いることが好ましい。また、軟質層を構成する粘弾性材料としては、ＥＰＤＭゴムなどの合成ゴム、ポリオレフィン系エラストマーなどの熱可塑性エラストマー樹脂、ポリウレタン樹脂、ポリ塩化ビニル樹脂、エポキシ樹脂、シリコーンゲル、ポリノルボルネン等が好ましく用いられる。   As a material constituting such an outermost layer, it is preferable to use a foil such as aluminum, stainless steel, steel plate, or a heat-resistant hard resin thin sheet. As the viscoelastic material constituting the soft layer, synthetic rubber such as EPDM rubber, thermoplastic elastomer resin such as polyolefin elastomer, polyurethane resin, polyvinyl chloride resin, epoxy resin, silicone gel, polynorbornene, etc. are preferably used. It is done.

このような積層構造からなる第１の粘弾性部材１３は、例えば、上記材料によってそれぞれ単体で形成した２種以上の層を、積層して接着することで形成される。   The 1st viscoelastic member 13 which consists of such a laminated structure is formed by laminating | stacking and adhere | attaching 2 or more types of layers each formed with the said material individually, for example.

（粘弾性部材の形状）
第１の粘弾性部材１３の形状は、第１の粘弾性部材１３がドアガラス１１の閉時に、ドアガラス１１とインナーパネル１２１の間に拘束され得る形状であれば特に限定されない。第１の粘弾性部材１３は、適度に弾性変形可能であることが好ましい。第１の粘弾性部材１３が弾性変形可能であれば、ドアガラス１１の開時から、ドアガラス１１を閉める際に、第１の粘弾性部材１３が、ドアガラス１１とインナーパネル１２１の間に挿入されて拘束される過程で、その進行方向前方側から後方に徐々に厚さが減少するように弾性変形される。その結果、第１の粘弾性部材１３は、ドアガラス１１の閉時において、開時に比べて厚みが減少される。これにより、ドアガラス１１の閉時における、ドアガラス１１とインナーパネル１２１の隙間をより密接して塞ぎ、車内を密閉するとともに、より安定した拘束型の制振構造を形成することができる。このため、第１の粘弾性部材１３による遮音効果が向上される。 (Shape of viscoelastic member)
The shape of the first viscoelastic member 13 is not particularly limited as long as the first viscoelastic member 13 can be restrained between the door glass 11 and the inner panel 121 when the door glass 11 is closed. It is preferable that the first viscoelastic member 13 is appropriately elastically deformable. If the first viscoelastic member 13 can be elastically deformed, the first viscoelastic member 13 is interposed between the door glass 11 and the inner panel 121 when the door glass 11 is closed after the door glass 11 is opened. In the process of being inserted and restrained, it is elastically deformed so that its thickness gradually decreases from the front side in the traveling direction to the rear side. As a result, the thickness of the first viscoelastic member 13 is reduced when the door glass 11 is closed compared to when the door glass 11 is opened. As a result, when the door glass 11 is closed, the gap between the door glass 11 and the inner panel 121 can be closed more closely, the inside of the vehicle can be sealed, and a more stable restraint type damping structure can be formed. For this reason, the sound insulation effect by the 1st viscoelastic member 13 is improved.

第１の粘弾性部材１３は、ドアガラス１１側から車内側方向の垂直断面における断面形状が、その上端に向けて、すなわち、ドアガラス１１を閉める際のドアガラス１１の進行方向に先細るテーパー形状を有することが好ましい。このようにすれば、ドアガラス１１の開時から、ドアガラス１１を閉める際に、第１の粘弾性部材１３が、ドアガラス１１とインナーパネル１２１の隙間に侵入し易くなり、また、第１の粘弾性部材１３が、ドアガラス１１とインナーパネル１２１の隙間を密接して塞ぎ、車内を密閉し易くなる。   As for the 1st viscoelastic member 13, the cross-sectional shape in the vertical cross section of the vehicle inner side direction from the door glass 11 side tapers toward the upper end, ie, the advancing direction of the door glass 11 when the door glass 11 is closed. It preferably has a shape. In this way, when the door glass 11 is closed after the door glass 11 is opened, the first viscoelastic member 13 can easily enter the gap between the door glass 11 and the inner panel 121, and the first glass The viscoelastic member 13 closes the gap between the door glass 11 and the inner panel 121 and makes it easy to seal the inside of the vehicle.

第１の粘弾性部材１３の厚さはドアガラス１１とインナーパネル１２１間に拘束され得る厚さであれば特に限定されず、ドアガラス１１とインナーパネル１２１の間隔に応じて適宜設定することができる。また、第１の粘弾性部材１３の、上下幅については、ドアガラスの閉時において、第１の粘弾性部材１３の上端がインナーシール部１４１の下端に到達するまでの範囲で拘束され、充分な遮音効果を得られるように設定される。   The thickness of the 1st viscoelastic member 13 will not be specifically limited if it is the thickness which can be restrained between the door glass 11 and the inner panel 121, According to the space | interval of the door glass 11 and the inner panel 121, it can set suitably. it can. Further, the vertical width of the first viscoelastic member 13 is constrained within a range until the upper end of the first viscoelastic member 13 reaches the lower end of the inner seal portion 141 when the door glass is closed, and is sufficient. It is set to obtain a sound insulation effect.

第１の粘弾性部材１３は、ドアガラス本体１５の一つの主面において左右両端を結ぶ水平方向に設けられる。ドアガラス本体１５の水平方向における第１の粘弾性部材１３の装着領域の位置については特に限定されず、第１の粘弾性部材１３は、ドアガラス本体１５の水平方向の全体に延在して設けられていてもよく、その一部に設けられていてもよい。ドアガラス本体１５の一部に設けられる場合には、ドアガラス本体１５の一部に連続的に設けられていてもよく、断続的に設けられていてもよい。なお、第１の粘弾性部材１３の体積が大きい方が、遮音効果が高いため、第１の粘弾性部材１３の装着領域は、ドアガラス本体１５の水平方向の全体に延在して設けられることが好ましい。   The first viscoelastic member 13 is provided in the horizontal direction connecting the left and right ends on one main surface of the door glass body 15. The position of the mounting region of the first viscoelastic member 13 in the horizontal direction of the door glass main body 15 is not particularly limited, and the first viscoelastic member 13 extends to the entire horizontal direction of the door glass main body 15. It may be provided or may be provided in a part thereof. When provided in a part of the door glass main body 15, it may be provided continuously in a part of the door glass main body 15 or may be provided intermittently. Since the sound insulation effect is higher when the volume of the first viscoelastic member 13 is larger, the mounting region of the first viscoelastic member 13 is provided so as to extend in the entire horizontal direction of the door glass body 15. It is preferable.

なお、本実施形態の遮音構造においては、ドアガラス１１の車外側に付着した雨水等の排水を良好に保つ点から、第１の粘弾性部材１３はドアガラス１１の車内側の主面の下方部に装着されている。他方、第１の粘弾性部材１３は、ドアガラス１１の車内側ではなく、車外側の主面の下方部に装着されていてもよい。
また、遮音効果をより高める点からは、ドアガラス１１の車内側の下方部に第１の粘弾性部材を備え、車外側の主面の下方部に上記説明した第１の粘弾性部材と同様の粘弾性材料から構成される第２の粘弾性部材を備えることが好ましい。すなわち、ドアガラス１１の車内側と車外側の両者の下方部にそれぞれ粘弾性部材を備えることが好ましい。第１および第２の粘弾性部材は、ドアガラス１１の下方部に装着されることで、ドアガラス１１の閉時に、ドアガラス１１と、インナーパネル１２１またはアウターパネル１２２の面の一部で拘束される。これによりドアガラス１１の両主面側に拘束型の制振構造を構成する。そのため、車内に侵入する音の量を充分に抑制するとともに、ドアガラス本体１５の振動を充分に抑制し、ドアガラスの閉時の車内における高い遮音効果が実現できる。 In the sound insulation structure of the present embodiment, the first viscoelastic member 13 is located below the main surface of the door glass 11 on the vehicle inner side from the viewpoint of maintaining good drainage of rainwater and the like attached to the vehicle outer side of the door glass 11. It is attached to the part. On the other hand, the first viscoelastic member 13 may be mounted not on the vehicle interior side of the door glass 11 but on the lower portion of the main surface on the vehicle exterior side.
Moreover, from the point which raises a sound-insulating effect, a 1st viscoelastic member is provided in the lower part of the vehicle inner side of the door glass 11, and it is the same as that of the 1st viscoelastic member demonstrated above in the lower part of the main surface of the vehicle outer side. It is preferable to provide the 2nd viscoelastic member comprised from these viscoelastic materials. That is, it is preferable to provide a viscoelastic member in the lower part of both the vehicle inner side and the vehicle outer side of the door glass 11. When the door glass 11 is closed, the first and second viscoelastic members are restrained by a part of the surface of the door glass 11 and the inner panel 121 or the outer panel 122 when the door glass 11 is closed. Is done. As a result, a constraining vibration damping structure is formed on both main surfaces of the door glass 11. For this reason, it is possible to sufficiently suppress the amount of sound entering the vehicle and sufficiently suppress the vibration of the door glass main body 15 and realize a high sound insulation effect in the vehicle when the door glass is closed.

［自動車用ドアガラス］
図３に、本発明の自動車用ドアガラス１１を概略的に示す。図３は、図１に示す自動車１０における自動車用ドアガラス１１のＡ−Ａ線断面図から自動車用ガラス１１のみを抜き出して示した図である。図３に示す自動車用ドアガラス１１は、ドアガラス本体１５と、粘弾性部材１３を備えている。図３において、粘弾性部材１３は、自動車用ドアガラス１１の少なくとも一方の主面の、ドアパネルに配設される際に下方に位置する部分（下方部）に装着されている。自動車用ドアガラス１１は、上記実施形態の遮音構造に用いられ、ドアパネルと共働して遮音構造を構成する。 [Automotive door glass]
In FIG. 3, the door glass 11 for motor vehicles of this invention is shown roughly. FIG. 3 is a view showing only the automobile glass 11 extracted from the cross-sectional view taken along the line AA of the automobile door glass 11 in the automobile 10 shown in FIG. The automobile door glass 11 shown in FIG. 3 includes a door glass body 15 and a viscoelastic member 13. In FIG. 3, the viscoelastic member 13 is attached to a portion (lower portion) positioned below when disposed on the door panel of at least one main surface of the door glass 11 for an automobile. The automobile door glass 11 is used in the sound insulation structure of the above embodiment, and constitutes a sound insulation structure in cooperation with the door panel.

自動車用ドアガラス１１は、図１に示す自動車１０の、ドアパネル１２を構成するインナーパネル１２１およびアウターパネル１２２（図２）間に、昇降可能に配設されることで窓開口部Ｗを開閉自在とする。そして、自動車用ドアガラス１１の閉時に、粘弾性部材１３１が、ドアガラス１１とインナーパネル１２１の間を密接して塞ぎ、車内を密閉する。そのため、ドアガラスの閉時においてベルトライン部を介して車内に侵入する音の量を充分に抑制することができる。また、自動車用ドアガラス１１の閉時に、粘弾性部材１３が、ドアガラス１１とインナーパネル１２１間に拘束されることで拘束型の制振構造を形成する。そのため、自動車用ドアガラス１１は、自動車に装着された際に、ドアガラス閉時の自動車内において高いレベルの遮音状態を達成できる自動車のベルトライン部遮音構造を構築可能である。   The door glass 11 for an automobile can be opened and closed freely by being disposed between the inner panel 121 and the outer panel 122 (FIG. 2) constituting the door panel 12 of the automobile 10 shown in FIG. And And when the door glass 11 for motor vehicles is closed, the viscoelastic member 131 close | closes between the door glass 11 and the inner panel 121, and seals the inside of a vehicle. Therefore, the amount of sound that enters the vehicle via the belt line portion when the door glass is closed can be sufficiently suppressed. In addition, when the automobile door glass 11 is closed, the viscoelastic member 13 is restrained between the door glass 11 and the inner panel 121 to form a restrained vibration damping structure. Therefore, the automobile door glass 11 can construct a vehicle beltline part sound insulation structure that can achieve a high level of sound insulation in the automobile when the door glass is closed when mounted on the automobile.

（ドアガラス本体）
ドアガラス本体１５は、通常、車両窓用として用いられる透明な板状体であれば特に制限されない。形状としては、平板状、湾曲状のものが挙げられる。主面の形状は、搭載される車両の窓の形状とされる。板状体は、汎用の板ガラス、強化ガラス、複層ガラス、合わせガラス、金属線入りガラスであってよい。板状体の材質としては、透明なガラス、樹脂等が挙げられる。板状体の厚みは、車両の種類によるが、概ね２．８〜５．０ｍｍ程度である。 (Door glass body)
The door glass body 15 is not particularly limited as long as it is a transparent plate-like body that is usually used for vehicle windows. Examples of the shape include a flat plate shape and a curved shape. The shape of the main surface is the shape of the window of the vehicle to be mounted. The plate-like body may be general-purpose plate glass, tempered glass, multilayer glass, laminated glass, or glass containing metal wire. Examples of the material for the plate-like body include transparent glass and resin. The thickness of the plate-like body is approximately 2.8 to 5.0 mm although it depends on the type of vehicle.

ガラスとして、具体的には、通常のソーダライムガラス、ホウ珪酸ガラス、無アルカリガラス、石英ガラス等が挙げられる。ガラスとしては、紫外線や赤外線を吸収するガラスを用いることも可能である。また、樹脂としては、ポリメチルメタクリレートなどのアクリル系樹脂やポリフェニレンカーボネートなどの芳香族ポリカーボネート系樹脂、ポリスチレン樹脂等が挙げられる。   Specific examples of the glass include ordinary soda lime glass, borosilicate glass, alkali-free glass, and quartz glass. As the glass, glass that absorbs ultraviolet rays or infrared rays can be used. Examples of the resin include acrylic resins such as polymethyl methacrylate, aromatic polycarbonate resins such as polyphenylene carbonate, and polystyrene resins.

（粘弾性部材）
粘弾性部材は、上記した第１の粘弾性部材１３である。自動車用ドアガラス１１は、ドアガラス本体の一方の主面のみに粘弾性部材１３を備えて構成されていてもよく、両主面に粘弾性部材を備えて構成されていてもよい。粘弾性部材１３は、例えば、両面テープや公知の接着剤によって、ドアガラス本体１５に接着されている。 (Viscoelastic member)
The viscoelastic member is the first viscoelastic member 13 described above. The automotive door glass 11 may be configured to include the viscoelastic member 13 on only one main surface of the door glass main body, or may be configured to include viscoelastic members on both main surfaces. The viscoelastic member 13 is bonded to the door glass body 15 by, for example, a double-sided tape or a known adhesive.

（変形例１）
図４は、テーパー形状を有する粘弾性部材１３２を備えた自動車用ドアガラス１１２を概略的に示す断面図である。図４において、図３と同様の機能を奏する構成については、重複する説明を省略する。図４に示す自動車用ドアガラス１１２は、ドアガラス本体１５１と、粘弾性部材１３２を備えており、粘弾性部材１３２は、自動車用ドアガラス１１１の少なくとも一方の主面の、ドアパネルに配設される際の下方部に装着されている。粘弾性部材１３２は、弾性変形可能な材料で構成されている。また、粘弾性部材１３２は、ドアガラス１１２が自動車に装着される際のドアガラス１１２側から車内側方向の垂直断面における断面形状が、その上端に向けて、すなわち、ドアガラス１１２を閉める際のドアガラス１１２の進行方向に先細るテーパー形状を有している。 (Modification 1)
FIG. 4 is a cross-sectional view schematically showing an automotive door glass 112 including a viscoelastic member 132 having a tapered shape. In FIG. 4, the description of the same function as in FIG. 3 is omitted. 4 includes a door glass body 151 and a viscoelastic member 132. The viscoelastic member 132 is disposed on a door panel on at least one main surface of the automotive door glass 111. It is attached to the lower part when The viscoelastic member 132 is made of an elastically deformable material. In addition, the viscoelastic member 132 has a cross-sectional shape in a vertical cross section in the vehicle inner side direction from the door glass 112 side when the door glass 112 is mounted on an automobile toward its upper end, that is, when the door glass 112 is closed. The door glass 112 has a tapered shape that tapers in the traveling direction.

自動車用ドアガラス１１２は、上記実施形態の遮音構造に用いられる。自動車用ドアガラス１１２がドアパネルに配設された状態で、自動車用ドアガラス１１２の閉時に、粘弾性部材１３２がドアガラス１１２とインナーパネル１２１間に拘束されることで拘束型の制振構造を形成する。自動車用ドアガラス１１２は、上記したようにテーパー形状を有しているため、ドアガラス１１２の開時から、ドアガラス１１２を閉める際に、粘弾性部材１３２が、ドアガラス１１２とインナーパネル１２１の隙間に侵入し易い。また、粘弾性部材１３２は、弾性変形してドアガラス１１２とインナーパネル１２１の隙間に侵入するため、ドアガラス１１２とインナーパネル１２１の隙間を塞ぎ、車内を密閉し易い。したがって、自動車用ドアガラス１１２は、自動車に装着された際に、ドアガラス閉時の自動車内において高いレベルの遮音状態を達成できる自動車のベルトライン部遮音構造を構築可能である。   The automotive door glass 112 is used in the sound insulation structure of the above embodiment. When the automotive door glass 112 is disposed on the door panel, the viscoelastic member 132 is restrained between the door glass 112 and the inner panel 121 when the automotive door glass 112 is closed. Form. Since the automotive door glass 112 has a tapered shape as described above, when the door glass 112 is closed from when the door glass 112 is opened, the viscoelastic member 132 is formed between the door glass 112 and the inner panel 121. Easy to enter the gap. Further, since the viscoelastic member 132 is elastically deformed and enters the gap between the door glass 112 and the inner panel 121, the gap between the door glass 112 and the inner panel 121 is closed and the inside of the vehicle is easily sealed. Therefore, the automobile door glass 112 can construct a vehicle beltline sound insulation structure that can achieve a high level of sound insulation in the automobile when the door glass is closed when mounted on the automobile.

（変形例２）
図５は、３層の積層構造からなる粘弾性部材１３３を備えた自動車用ドアガラス１１３を概略的に示す断面図である。図５において、図３と同様の機能を奏する構成については、重複する説明を省略する。図５に示す自動車用ドアガラス１１３は、ドアガラス本体１５１と、粘弾性部材１３３を備えており、粘弾性部材１３３は、自動車用ドアガラス１１３の少なくとも一方の主面の、ドアパネルに配設される際の下方部に配設されている。 (Modification 2)
FIG. 5 is a cross-sectional view schematically showing an automotive door glass 113 provided with a viscoelastic member 133 having a three-layer laminated structure. 5, the description which overlaps about the structure which show | plays the same function as FIG. 3 is abbreviate | omitted. 5 includes a door glass main body 151 and a viscoelastic member 133. The viscoelastic member 133 is disposed on a door panel on at least one main surface of the automotive door glass 113. It is arranged in the lower part at the time.

粘弾性部材１３３は、自動車に装着される際の車内側から自動車用ドアガラス１１３側に向けて、最表層１３３ａと、最表層よりもヤング率の小さい、粘弾性体からなる軟質層１３３ｂと、最表層１３３ａと同様の構成の最表層１３３ｃを有している。粘弾性部材１３３においては、最表層１３３ａ、１３３ｃには密着性の材料、例えば、アルミ、ステンレス、鋼板鋼等の箔、あるいは、耐熱性硬質樹脂薄シート等を用いることができる。また、軟質層１３３ｂの材料としては、ＥＰＤＭゴムなどの合成ゴム、ポリオレフィン系エラストマーなどの熱可塑性エラストマー樹脂、ポリウレタン樹脂、ポリ塩化ビニル樹脂、エポキシ樹脂、シリコーンゲル、ポリノルボルネン等の粘弾性材料が用いられる。   The viscoelastic member 133 has an outermost layer 133a and a soft layer 133b made of a viscoelastic body having a Young's modulus smaller than that of the outermost layer, from the vehicle inner side toward the vehicle door glass 113 when mounted on the vehicle. The outermost layer 133c has the same configuration as the outermost layer 133a. In the viscoelastic member 133, an adhesive material, for example, a foil such as aluminum, stainless steel, steel plate, or a heat resistant hard resin thin sheet can be used for the outermost layers 133a and 133c. As the material for the soft layer 133b, a viscoelastic material such as a synthetic rubber such as EPDM rubber, a thermoplastic elastomer resin such as a polyolefin-based elastomer, a polyurethane resin, a polyvinyl chloride resin, an epoxy resin, a silicone gel, or polynorbornene is used. It is done.

自動車用ドアガラス１１３は、上記実施形態の遮音構造に用いられる。自動車用ドアガラス１１３が自動車に装着された状態で、自動車用ドアガラス１１３の閉時に、粘弾性部材１３３がドアガラス１１３とインナーパネル１２１間に拘束されることで拘束型の制振構造を形成する。この際、最表層１３３ａが上記したように、密着性の材料で構成されているため、粘弾性部材１３３がインナーパネル１２１に密着される。そのため、ドアガラス１１２とインナーパネル１２１の隙間を塞ぎ、車内を密閉し易くなる。また、軟質層のヤング率が上記した範囲であるため、充分な制振制と遮音性を備えるものである。したがって、自動車用ドアガラス１１３は、自動車に装着された際に、ドアガラス閉時の自動車内において高いレベルの遮音状態を達成できる自動車のベルトライン部遮音構造を構築可能である。   The automotive door glass 113 is used in the sound insulation structure of the above embodiment. When the automotive door glass 113 is mounted on the automobile, the viscoelastic member 133 is restrained between the door glass 113 and the inner panel 121 when the automotive door glass 113 is closed, thereby forming a restrained vibration damping structure. To do. At this time, since the outermost layer 133a is made of an adhesive material as described above, the viscoelastic member 133 is in close contact with the inner panel 121. Therefore, the gap between the door glass 112 and the inner panel 121 is closed, and the inside of the vehicle is easily sealed. Further, since the Young's modulus of the soft layer is in the above range, it has sufficient vibration suppression and sound insulation. Therefore, the automobile door glass 113 can construct a vehicle beltline sound insulation structure that can achieve a high level of sound insulation in the automobile when the door glass is closed.

以上、実施形態の自動車のベルトライン部遮音構造によれば、ドアパネルとドアガラスとの間からの音の侵入を阻止するとともに、ドアガラス自体の振動による音の発生を防ぐことで、優れた遮音効果を発揮することができる。また、実施形態の粘弾性部材付き自動車用ドアガラスによれば、自動車に装着された際に、上記ベルトライン部遮音構造を構成するため、優れた遮音効果が発揮される。   As mentioned above, according to the belt line part sound insulation structure of the vehicle of the embodiment, while preventing the intrusion of sound from between the door panel and the door glass and preventing the generation of sound due to vibration of the door glass itself, excellent sound insulation The effect can be demonstrated. Moreover, according to the vehicular door glass with viscoelastic member of the embodiment, the belt line portion sound insulation structure is configured when mounted on a vehicle, so that an excellent sound insulation effect is exhibited.

１０…自動車、１１…ドアガラス、１２…ドアパネル、１３…第１の粘弾性部材、１５…ドアガラス本体，１２１…インナーパネル、１２２…アウターパネル、１４１…インナーシール部、１４２…アウターシール部、Ｌ…ベルトライン、Ｓ…サイドドア、Ｗ…窓開口部、Ｐ…矢印。   DESCRIPTION OF SYMBOLS 10 ... Automobile, 11 ... Door glass, 12 ... Door panel, 13 ... 1st viscoelastic member, 15 ... Door glass main body, 121 ... Inner panel, 122 ... Outer panel, 141 ... Inner seal part, 142 ... Outer seal part, L ... belt line, S ... side door, W ... window opening, P ... arrow.

Claims (9)

自動車のベルトラインに沿って、ドアパネルとドアガラスとの間を遮音する遮音構造であって、
前記ドアパネルは互いに対向する２枚のパネル板を備え、前記ドアガラスは前記２枚のパネル板の間に昇降可能に配設されることで開閉自在であり、
前記ドアガラスの少なくとも一方の主面の下方部に装着された第１の粘弾性部材を備え、
前記ドアガラスの閉時に、前記第１の粘弾性部材が、前記ドアガラスにおける前記第１の粘弾性部材の装着領域と、前記一方の主面に対向する前記パネル板の面の一部で拘束されることを特徴とする自動車のベルトライン部遮音構造。 A sound insulation structure for sound insulation between the door panel and the door glass along the belt line of the automobile,
The door panel includes two panel plates opposed to each other, and the door glass can be opened and closed by being arranged to be movable up and down between the two panel plates.
A first viscoelastic member mounted on a lower portion of at least one main surface of the door glass;
When the door glass is closed, the first viscoelastic member is restrained by a part of the panel plate facing the one main surface and a mounting region of the first viscoelastic member in the door glass. A sound insulation structure for a belt line portion of an automobile. 前記第１の粘弾性部材が、弾性変形可能であり、前記第１の粘弾性部材の厚さが、前記ドアガラスの開時に比べて閉時において減少されることを特徴とする請求項１に記載の自動車のベルトライン部遮音構造。   The first viscoelastic member is elastically deformable, and the thickness of the first viscoelastic member is reduced when the door glass is closed compared to when the door glass is opened. The vehicle beltline sound insulation structure as described. 前記第１の粘弾性部材は、２０℃におけるヤング率Ｅ（Ｎ／ｍ２）と、２０℃、振動数４０００Ｈｚにおける損失係数ｔａｎδが、下記式（１）を満たすことを特徴とする請求項１または２に記載の自動車のベルトライン部遮音構造。
Figure 2017030730
 2. The first viscoelastic member has a Young's modulus E (N / m 2 ) at 20 ° C. and a loss coefficient tan δ at 20 ° C. and a frequency of 4000 Hz satisfy the following formula (1): Or the beltline part sound-insulation structure of the motor vehicle of 2.
Figure 2017030730
 前記第１の粘弾性部材が、他の層よりも２０℃におけるヤング率の相対的に低い軟質層を含む積層構造を有することを特徴とする請求項１〜３のいずれか１項に記載の自動車のベルトライン部遮音構造。   The said 1st viscoelastic member has a laminated structure containing the soft layer whose Young's modulus is relatively low in 20 degreeC rather than another layer, The any one of Claims 1-3 characterized by the above-mentioned. The sound insulation structure of the beltline part of the car 前記第１の粘弾性部材の、前記ドアガラス側から車内側方向の垂直断面における断面形状が、その上端に向けて先細るテーパー形状であることを特徴とする請求項１〜４のいずれか１項に記載の自動車のベルトライン部遮音構造。   The cross-sectional shape of the first viscoelastic member in a vertical cross section in the vehicle interior direction from the door glass side is a tapered shape that tapers toward an upper end thereof. The sound insulation structure for a belt line part of an automobile according to the item. 前記ドアガラスの前記一方の主面が、車内側の主面であり、
前記ドアガラスの閉時に、前記第１の粘弾性部材が、前記ドアガラスにおける前記第１の粘弾性部材の装着領域と、前記ドアガラスに対向する前記パネル板の面の一部で拘束されることを特徴とする請求項１〜５のいずれか１項に記載の自動車のベルトライン部遮音構造。 The one main surface of the door glass is a main surface on the vehicle inner side,
When the door glass is closed, the first viscoelastic member is restrained by a mounting region of the first viscoelastic member in the door glass and a part of the surface of the panel plate facing the door glass. The belt-line part sound-insulation structure of the motor vehicle of any one of Claims 1-5 characterized by the above-mentioned. さらに、前記ドアガラスの、他方の主面の下方部に装着された第２の粘弾性部材を備え、
前記ドアガラスの閉時に、前記第２の粘弾性部材が、前記ドアガラスにおける前記第２の粘弾性部材の装着領域と、前記他方の主面に対向する前記パネル板の前記ドアガラス側の面の一部で拘束されることを特徴とする請求項１〜６のいずれか１項記載の自動車のベルトライン部遮音構造。 The door glass further includes a second viscoelastic member attached to a lower portion of the other main surface,
When the door glass is closed, the second viscoelastic member is attached to the second viscoelastic member in the door glass and the surface on the door glass side of the panel plate facing the other main surface. The beltline part sound insulation structure for automobiles according to any one of claims 1 to 6, wherein the structure is restrained by a part of 前記第２の粘弾性部材が、請求項２乃至５のいずれか１項に記載の前記第１の粘弾性部材と同様であることを特徴とする請求項７に記載の自動車のベルトライン部遮音構造。   The said 2nd viscoelastic member is the same as the said 1st viscoelastic member of any one of Claims 2 thru | or 5, The beltline part sound insulation of the motor vehicle of Claim 7 characterized by the above-mentioned. Construction. 請求項１〜８のいずれか１項に記載のベルトライン部遮音構造に用いられる、粘弾性部材付きガラス板からなることを特徴とする自動車用ドアガラス。   It consists of a glass plate with a viscoelastic member used for the beltline part sound-insulation structure of any one of Claims 1-8, The door glass for motor vehicles characterized by the above-mentioned.
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