JP5210678B2 - Dash silencer steering shaft penetration sound insulation structure - Google Patents

Dash silencer steering shaft penetration sound insulation structure Download PDF

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JP5210678B2
JP5210678B2 JP2008077495A JP2008077495A JP5210678B2 JP 5210678 B2 JP5210678 B2 JP 5210678B2 JP 2008077495 A JP2008077495 A JP 2008077495A JP 2008077495 A JP2008077495 A JP 2008077495A JP 5210678 B2 JP5210678 B2 JP 5210678B2
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hole
slit
steering shaft
dash
patch
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JP2009227199A (en
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佳弘 細尾
博 山本
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Howa Co Ltd
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Howa Textile Industry Co Ltd
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Description

本発明は、自動車のダッシュサイレンサー（防音用マット）におけるステアリングシャフト貫通部から、運転室内に騒音が漏れるのを防ぐ遮音構造に関するものである。   The present invention relates to a sound insulation structure for preventing noise from leaking into a driver's cab from a steering shaft penetrating portion in a dash silencer (soundproof mat) of an automobile.

自動車のダッシュサイレンサーは、下記特許文献１〜４に記載されたように、一定厚のフエルトや発泡ウレタン等からなる防音用マットであって、ダッシュパネルの室内側面に張設することにより、エンジンルームで発生した騒音が運転室に漏れるのを抑え、運転室の静粛を保つためのものである。また、そのステアリングシャフト貫通部は下記特許文献５にも記載されている。
特開平８−２８２４０２号公報 特開２００１−１３８７７１号公報 特開平９−２４９０８０号公報 特開平１０−９５２８３号公報 特開２００７−３０８０１０号公報 As described in Patent Documents 1 to 4 below, a dash silencer for an automobile is a soundproof mat made of felt, urethane foam or the like having a predetermined thickness, This is to keep the noise generated in the engine from leaking into the cab and keep the cab quiet. The steering shaft penetrating portion is also described in Patent Document 5 below.
JP-A-8-282402 JP 2001-138771 A JP-A-9-249080 JP-A-10-95283 JP 2007-308010 A

ところで、ダッシュパネルにはステアリングシャフトを貫通させるための貫通孔が開設され、該貫通孔にはステアリングシャフトをインパネ側とエンジン側からジョイントするための作業代（具体的にはスパナを差し入れて旋回し得るような空間）が必要であるので、大きな貫通孔が形成されており、そのために運転室に騒音が漏れやすいという問題があった。
そこで従来から略円錐形筒状に形成された樹脂製のコラムホールカバーを該貫通孔に被着し、騒音が漏れるのを防いでいたが、該コラムホールカバーは普通は、薄い合成樹脂でできており、しかも該コラムホールカバーの上部にシャフトを貫通させるための切欠が形成されシャフトとの隙も発生するため十分に騒音が漏れるのを防ぐことができなかった。
本発明は、このような課題を解決し得るダッシュサイレンサーのステアリングシャフト貫通部遮音構造を提供しようとするものである。 By the way, a through-hole for penetrating the steering shaft is opened in the dash panel, and an operation cost for jointing the steering shaft from the instrument panel side and the engine side (specifically, a spanner is inserted to turn the through-hole). Space), a large through hole is formed, which causes a problem that noise easily leaks into the cab.
Therefore, conventionally, a resin column hole cover formed in a substantially conical cylindrical shape has been attached to the through hole to prevent noise from leaking, but the column hole cover is usually made of a thin synthetic resin. In addition, a notch for penetrating the shaft is formed in the upper part of the column hole cover and a gap with the shaft is generated, so that it has not been possible to sufficiently prevent noise from leaking.
The present invention intends to provide a sound insulation structure for a steering shaft penetrating portion of a dash silencer that can solve such problems.

上記課題を解決するため請求項１に記載したダッシュサイレンサーのステアリングシャフト貫通部遮音構造は、ダッシュパネルにステアリングシャフトを貫通させる貫通孔が開設され、該貫通孔を覆うように該ダッシュパネルの室内側面に張設された可撓性マット状のダッシュサイレンサーと、前記ステアリングシャフトが貫挿され下端開口縁にフランジが形成された略円錐形筒状のコラムホールカバーとを備え、前記ダッシュサイレンサーには前記貫通孔よりも小さい透孔が開設され、該透孔を囲う枠状にスリットを刻むとともに該スリットの一部に切り残し部を設けることで該スリットの内側にダッシュサイレンサーの外延部と連通状なるパッチ部を形成し、該パッチ部に前記透孔から外方に向けて延び前記スリットと連通することで該パッチ部を２つ割状にする割スリットを形成し、前記切り残し部を屈折させることで該パッチ部がめくり上げられ、前記ステアリングシャフトを該割スリットに通すことで該ステアリングシャフトが前記透孔中に導かれ、前記フランジが前記スリット上に被るように前記コラムホールカバーを前記ダッシュパネルに突設されたスタッドボルトに固着することで該パッチ部を該ダッシュパネルに固定してなることを特徴とする。 In order to solve the above-mentioned problem, the steering shaft penetrating portion sound insulation structure of the dash silencer according to claim 1 is provided with a through hole that allows the steering shaft to penetrate the dash panel, and the interior side surface of the dash panel is covered with the through hole. A dash silencer in the form of a flexible mat, and a column hole cover having a substantially conical cylindrical shape in which the steering shaft is inserted and a flange is formed at a lower end opening edge. A through hole smaller than the through hole is established, and a slit is engraved in a frame shape surrounding the through hole, and an uncut portion is provided in a part of the slit so as to communicate with the extended portion of the dash silencer inside the slit. Forming a patch portion, extending outward from the through hole to the patch portion and communicating with the slit; A split slit is formed to divide the groove into two parts, and the patch part is turned up by refracting the uncut portion, and the steering shaft is passed through the split slit to cause the steering shaft to pass through the transparent slit. The patch portion is fixed to the dash panel by being fixed to a stud bolt protruding from the dash panel so that the column hole cover is guided into the hole and the flange covers the slit. Features.

ダッシュパネルの貫通孔から騒音が漏れるのを有効に防止することができ、遮音性、防音性が向上するとともに、ダッシュサイレンサーがステアリングシャフトのジョイント作業の邪魔になることがないようにできる。   Noise can be effectively prevented from leaking from the through hole of the dash panel, and sound insulation and sound insulation are improved, and the dash silencer can be prevented from interfering with the steering shaft joint work.

図１は、エンジンルーム１と運転室２とを区画する鋼板製のダッシュパネル３の室内側面に本発明に係るダッシュサイレンサー４を取り付けた車体の要部の縦断面図で、５はエンジンルーム１側のシャフト部材５ａと運転室２側のシャフト部材５ｂとをジョイントすることにより構成されるステアリングシャフト、６は該ステアリングシャフトを貫通させるためにダッシュパネル３に開設された貫通孔である。   FIG. 1 is a longitudinal sectional view of a main part of a vehicle body in which a dash silencer 4 according to the present invention is attached to an interior side surface of a dash panel 3 made of a steel plate that partitions an engine room 1 and a cab 2. A steering shaft 6 formed by jointing the shaft member 5a on the side and the shaft member 5b on the cab 2 side is a through hole formed in the dash panel 3 to allow the steering shaft to pass therethrough.

ダッシュサイレンサー４はフエルトからなる吸音層の表面に合成樹脂製シートからなる遮音材層を設けてなる可撓性マット状のもので、貫通孔６を覆うようにダッシュパネル３の室内側面に張設され、図２にも示したように、該貫通孔６と合致する部分には該貫通孔６よりも小さい透孔７を開設するとともに該透孔７を囲う枠状にスリット８を刻んでいる。該スリット８は透孔７と連通するように該透孔７から外方に向けて延びる割スリット（スリ割）９を形成するとともに、スリット８の下辺の一部に切り残し部８ａを設けることで該ダッシュサイレンサー４の外延部と連通状なるようにする。このため、該スリット８の内側にパッチ部１０（透孔７の外縁部分）が形成され、図３に示したように、その切り残し部８ａを屈折させることで該パッチ部１０がめくり上げられるようにしている。なお、１１はパッチ部１０の縁寄りに形成された小孔、１２は同じく縁寄りに形成されたＴ字形孔である。また、１３，１４はダッシュパネル３の室内側面に突設されたスタッドボルトである。   The dash silencer 4 is a flexible mat-like material in which a sound insulation layer made of a synthetic resin sheet is provided on the surface of the sound absorption layer made of felt, and is stretched on the interior side surface of the dash panel 3 so as to cover the through hole 6. As shown in FIG. 2, a through-hole 7 smaller than the through-hole 6 is formed in a portion that matches the through-hole 6 and a slit 8 is cut in a frame shape surrounding the through-hole 7. . The slit 8 is formed with a split slit (slot) 9 extending outward from the through hole 7 so as to communicate with the through hole 7, and an uncut portion 8 a is provided on a part of the lower side of the slit 8. In this way, the dash silencer 4 communicates with the extended portion. Therefore, a patch portion 10 (outer edge portion of the through hole 7) is formed inside the slit 8, and the patch portion 10 is turned up by refracting the uncut portion 8a as shown in FIG. I am doing so. In addition, 11 is a small hole formed near the edge of the patch portion 10, and 12 is a T-shaped hole formed similarly near the edge. Reference numerals 13 and 14 denote stud bolts protruding from the interior side surface of the dash panel 3.

図４にも示したように、１５は下端開口縁にフランジ１６が一体に形成された合成樹脂製の略円錐形筒状のコラムホールカバーで、該コラムホールカバーの上端開口１７にステアリングシャフト５のシャフト部材５ｂが貫挿される。   As shown also in FIG. 4, 15 is a substantially conical cylindrical column hole cover made of synthetic resin in which a flange 16 is integrally formed at the lower end opening edge, and the steering shaft 5 is connected to the upper end opening 17 of the column hole cover. The shaft member 5b is inserted.

このため、シャフト部材５ａとシャフト部材５ｂとをジョイントするに際し、ダッシュサイレンサー４のパッチ部１０を図３に示したようにめくり上げることにより、そのジョイント部の周囲に十分に広い空間を確保することができ、スパナ等の工具を使用することの邪魔になることがない。そしてジョイントができたところで、図１に示したように貫通孔６をパッチ部１０によって覆う。このとき該パッチ部１０は前記割スリット９によって２つ割状になっているのでシャフト部材５ｂをジョイントした後でも支障なく該シャフト部材５ｂを透孔７中に導くことができる。そして、小孔１１にスタッドボルト１３を貫挿し、Ｔ字形孔１２にスタッドボルト１４を貫挿する。なお、Ｔ字形孔１２はスタッドボルト１４の周囲に引っ掛かり易いので該パッチ部１０を貫通孔６を覆う仮止め状態にすることができる。   For this reason, when jointing the shaft member 5a and the shaft member 5b, the patch portion 10 of the dash silencer 4 is turned up as shown in FIG. 3 to ensure a sufficiently wide space around the joint portion. Can be used and does not interfere with the use of a tool such as a spanner. When the joint is formed, the through hole 6 is covered with the patch portion 10 as shown in FIG. At this time, since the patch portion 10 is split into two by the split slit 9, the shaft member 5b can be guided into the through hole 7 without any trouble even after the shaft member 5b is joined. Then, the stud bolt 13 is inserted into the small hole 11, and the stud bolt 14 is inserted into the T-shaped hole 12. Since the T-shaped hole 12 is easily caught around the stud bolt 14, the patch portion 10 can be temporarily fixed to cover the through-hole 6.

次いで、コラムホールカバー１５を該ダッシュサイレンサー４上に被着し、スリット８が該コラムホールカバー１５のフランジ１６により覆われるようにするとともに、該フランジ１６に予め開設された止孔にスタッドボルト１３，１４を貫挿させ、その上から該スタッドボルト１３，１４に止輪１８，１９を嵌めることにより、該コラムホールカバー１５をスタッドボルト１３，１４に固着し、パッチ部１０がフランジ１６により圧着され固定されるようにする。こうして貫通孔６をパッチ部１０により覆うとともに、該パッチ部１０周囲のスリット８をフランジ１６により覆うことで、貫通孔６から音漏れするのを防ぐと同時にスリット８からも音漏れするのを防ぐ。また、これによりパッチ部１０はぐらつくおそれなくダッシュパネル３に固定される。   Next, the column hole cover 15 is attached onto the dash silencer 4 so that the slit 8 is covered with the flange 16 of the column hole cover 15, and the stud bolt 13 is formed in the stop hole previously opened in the flange 16. , 14 are inserted, and retaining rings 18, 19 are fitted to the stud bolts 13, 14 from above, whereby the column hole cover 15 is fixed to the stud bolts 13, 14, and the patch portion 10 is crimped by the flange 16. To be fixed. In this way, the through hole 6 is covered with the patch portion 10 and the slit 8 around the patch portion 10 is covered with the flange 16, thereby preventing sound leakage from the through hole 6 and at the same time preventing sound leakage from the slit 8. . This also fixes the patch portion 10 to the dash panel 3 without fear of wobbling.

このように本発明に係るダッシュサイレンサーのステアリングシャフト貫通部遮音構造によれば、ダッシュパネル３に大きな貫通孔６が開設されていようとも、該貫通孔６をパッチ部１０により覆うことにより、該貫通孔６から運転室２に騒音が漏れるのを有効に防止することができる。しかも、ステアリングシャフトをジョイントさせる際には、該パッチ部１０をめくり上げられるようにしたので、ジョイント作業の邪魔になるおそれがない。   As described above, according to the sound insulation structure for the steering shaft through portion of the dash silencer according to the present invention, even though the large through hole 6 is opened in the dash panel 3, the through hole 6 is covered with the patch portion 10 to It is possible to effectively prevent noise from leaking from the hole 6 to the cab 2. In addition, when the steering shaft is jointed, the patch portion 10 can be turned up, so that there is no possibility of interfering with the joint work.

本発明に係るダッシュサイレンサーのステアリングシャフト貫通部遮音構造を示す車体の要部の縦断面図。The longitudinal cross-sectional view of the principal part of the vehicle body which shows the steering shaft penetration part sound-insulation structure of the dash silencer which concerns on this invention. 本発明に係るダッシュサイレンサーの斜視図。The perspective view of the dash silencer which concerns on this invention. 本発明に係るダッシュサイレンサーのパッチ部をめくり上げたときの斜視図。The perspective view when the patch part of the dash silencer which concerns on this invention is turned up. 図１のＡ−Ａ線断面図。AA sectional view taken on the line AA of FIG. 図１のＢ−Ｂ線断面図。FIG. 3 is a sectional view taken along line BB in FIG. 1.

符号の説明Explanation of symbols

３ ダッシュパネル
４ ダッシュサイレンサー
５ ステアリングシャフト
６ 貫通孔
７ 透孔
８ スリット
９ 割スリット
１０ パッチ部
１１ 小孔
１２ Ｔ字形孔
１３，１４ スタッドボルト
１５ コラムホールカバー
１６ フランジ DESCRIPTION OF SYMBOLS 3 Dash panel 4 Dash silencer 5 Steering shaft 6 Through-hole 7 Through-hole 8 Slit 90 Split slit 10 Patch part 11 Small hole 12 T-shaped hole 13,14 Stud bolt 15 Column hole cover 16 Flange

Claims (1)

ダッシュパネルにステアリングシャフトを貫通させる貫通孔が開設され、該貫通孔を覆うように該ダッシュパネルの室内側面に張設された可撓性マット状のダッシュサイレンサーと、前記ステアリングシャフトが貫挿され下端開口縁にフランジが形成された略円錐形筒状のコラムホールカバーとを備え、前記ダッシュサイレンサーには前記貫通孔よりも小さい透孔が開設され、該透孔を囲う枠状にスリットを刻むとともに該スリットの一部に切り残し部を設けることで該スリットの内側にダッシュサイレンサーの外延部と連通状なるパッチ部を形成し、該パッチ部に前記透孔から外方に向けて延び前記スリットと連通することで該パッチ部を２つ割状にする割スリットを形成し、前記切り残し部を屈折させることで該パッチ部がめくり上げられ、前記ステアリングシャフトを該割スリットに通すことで該ステアリングシャフトが前記透孔中に導かれ、前記フランジが前記スリット上に被るように前記コラムホールカバーを前記ダッシュパネルに突設されたスタッドボルトに固着することで該パッチ部を該ダッシュパネルに固定してなることを特徴としたダッシュサイレンサーのステアリングシャフト貫通部遮音構造。 A through hole is formed in the dash panel to allow the steering shaft to pass therethrough. A flexible mat-shaped dash silencer stretched on the interior side surface of the dash panel so as to cover the through hole, and the lower end of the steering shaft is inserted. A column hole cover having a substantially conical cylindrical shape with a flange formed at the opening edge, and a through hole smaller than the through hole is opened in the dash silencer, and a slit is engraved in a frame shape surrounding the through hole A patch portion is formed inside the slit so as to communicate with the extended portion of the dash silencer by providing an uncut portion in a part of the slit, and the slit extends outward from the through hole in the patch portion. By forming a split slit that divides the patch part into two by communicating, the patch part is turned up by refracting the uncut part. The steering shaft is guided into the through hole by passing the steering shaft through the split slit, and the column hole cover is provided on a stud bolt protruding from the dash panel so that the flange covers the slit. A dash silencer steering shaft penetration portion sound insulation structure , wherein the patch portion is fixed to the dash panel by being fixed .
JP2008077495A 2008-03-25 2008-03-25 Dash silencer steering shaft penetration sound insulation structure Active JP5210678B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142237B2 (en) 2020-01-14 2021-10-12 Honda Motor Co., Ltd. Tilt steering assembly for a vehicle

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* Cited by examiner, † Cited by third party
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JP6546150B2 (en) * 2016-12-26 2019-07-17 トヨタ自動車株式会社 Vehicle substructure

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JPS6322128Y2 (en) * 1981-05-20 1988-06-17
JPS6170183U (en) * 1984-10-15 1986-05-13
JPS6326463U (en) * 1986-08-06 1988-02-20
JPH02121359U (en) * 1989-03-15 1990-10-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142237B2 (en) 2020-01-14 2021-10-12 Honda Motor Co., Ltd. Tilt steering assembly for a vehicle

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