JPH0454224A - Rear plate having vibration suppressing function - Google Patents

Rear plate having vibration suppressing function

Info

Publication number
JPH0454224A
JPH0454224A JP16144990A JP16144990A JPH0454224A JP H0454224 A JPH0454224 A JP H0454224A JP 16144990 A JP16144990 A JP 16144990A JP 16144990 A JP16144990 A JP 16144990A JP H0454224 A JPH0454224 A JP H0454224A
Authority
JP
Japan
Prior art keywords
rear plate
clutch housing
engine block
vibration
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16144990A
Other languages
Japanese (ja)
Inventor
Noritoshi Ootani
大谷　紀敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP16144990A priority Critical patent/JPH0454224A/en
Publication of JPH0454224A publication Critical patent/JPH0454224A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/008—Sound insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Transmissions (AREA)

Abstract

PURPOSE:To restrain vibration which is produced in the opening part of a housing integrally incorporated with a transmission, with the use of a rear plate which is disposed between an engine block and a clutch housing, by inserting seal members in both side surfaces of the rear plate, respectively. CONSTITUTION:A rear plate 4 disposed between an engine block on a vehicle and a clutch housing coupled to a transmission casing, is formed therein with recess grooves 8 at required positions on both engine block 1 side and a clutch housing 3 side. Further, seal members 9 are disposed in these front and rear recess grooves 8 so as to obtain the rear plate 4 having a vibration suppressing function. In the case of forming the recess grooves 8 in the rear plate 4, a bead 8a is formed on the other side. With this arrangement, the opening of the housing integrally incorporated with a transmission and having such a shape that the end attached to the engine is opened, is surely constrained, thereby it is possible to satisfactorily suppress hanging bell-like vibration which is produced in the opening part.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、車両のエンジンブロックと、トランスミッシ
ョンケースと結合したクラッチハウジングとの間に介装
するリアプレートに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rear plate interposed between a vehicle engine block and a clutch housing coupled to a transmission case.

（従来の技術） 第６図および第７図は、自動車用のエンジンと、そのエ
ンジンと連結したクラッチハウジングとトランスミッシ
ョンケースの一例を示すもので、図中１はエンジンブロ
ック、２はトランスミッションケース、３はトランスミ
ッションケース２と結合したクラッチハウジング、４は
エンジンブロックｌとクラッチハウジング３との間に介
装したリアプレートである。(Prior Art) Fig. 6 and Fig. 7 show an example of an automobile engine, a clutch housing and a transmission case connected to the engine. In the figures, 1 is an engine block, 2 is a transmission case, and 3 4 is a clutch housing coupled to the transmission case 2, and 4 is a rear plate interposed between the engine block l and the clutch housing 3.

（発明が解決しようとする課題） 上述のように、自動車等の車両に搭載される変速機は、
トランスミッションケース２とボルト締め等により一体
的にされるクラッチハウジング３を介してエンジンブロ
ックｌの後部に取り付けられている。クラッチハウジン
グ３のエンジンへの取り付は端は開口しており、この開
口した取り付は端にこの取り付は端の開口部を実質的に
閉鎖する形状の防塵用リアプレート４が配設されている
。(Problems to be Solved by the Invention) As mentioned above, the transmission installed in a vehicle such as an automobile,
It is attached to the rear part of the engine block l via a clutch housing 3 that is integrated with the transmission case 2 by bolting or the like. The clutch housing 3 is attached to the engine with an open end, and a dustproof rear plate 4 having a shape that substantially closes the opening of the open end is disposed at the open end. ing.

この防塵用のプレートは、エンジンの後部に配設される
ことから、通常リアプレートと称されている。ところで
、このリアプレート４は、従来は単なるダストカバーと
して作用していてクラッチハウジング３の振動を抑制す
る効果は小さいという問題点があった。すなわち、この
リアプレートは通常１．５閣程度の鋼板で平板状もしく
は多少の凹凸を設けて作られているが、それ自体の振動
が大きく、クラッチハウジング３に生じるの振動を抑制
する効果は小さかった。また、リアプレートの剛性を多
少高めても、クラッチハウジング３の振動の半径方向の
変位に対しては、単に摩擦力で抑えるだけであるから、
振動の抑制効果は小さい。This dustproof plate is usually called a rear plate because it is disposed at the rear of the engine. By the way, this rear plate 4 has conventionally functioned as a mere dust cover, and has had a problem in that its effect of suppressing vibrations of the clutch housing 3 is small. In other words, this rear plate is usually made of a steel plate with a thickness of about 1.5 mm and is either flat or has some irregularities, but it itself generates large vibrations and has little effect in suppressing the vibrations generated in the clutch housing 3. Ta. Furthermore, even if the rigidity of the rear plate is increased to some extent, the radial displacement due to vibration of the clutch housing 3 is only suppressed by frictional force.
The vibration suppression effect is small.

そこで現状のプレート構造で、クラッチハウジング３の
振動を低減しようとすると板厚を８〜１０ｍ程度に厚く
する必要があるが、このようにすると重量が増加するた
め好ましくないという問題点があった。Therefore, in order to reduce the vibration of the clutch housing 3 with the current plate structure, it is necessary to increase the plate thickness to about 8 to 10 m, but there is a problem that this increases the weight, which is not preferable.

（課題を解決するための手段） 上述の問題点を解決するため本発明においては、車両の
エンジンブロックとトランスミッションケースと結合し
たクラッチハウジングとの間に介装するリアプレートに
おいて、このリアプレートのエンジンブロック側の要所
にシール材挿入用の凹溝を設けると共に、このリアプレ
ートのクラッチハウジング側の要所にもシール材挿入用
の凹溝を設け、これら表裏の凹溝にそれぞれシール材を
挿入して制振機能を有するリアプレートを構成する。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a rear plate interposed between the engine block of a vehicle and a clutch housing coupled to a transmission case. In addition to providing grooves for inserting sealing material at important points on the block side, grooves for inserting sealing material are also provided at important points on the clutch housing side of this rear plate, and sealing materials are inserted into each of these grooves on the front and back sides. This constitutes a rear plate with a vibration damping function.

（作　用） 上述のように本発明においては、リアプレートの表裏に
それぞれシール材を挿入したから、これによってエンジ
ンへの取り付は端が開口された形状をしたクラッチハウ
ジング等の変速機一体ハウジングの開口部の拘束を、比
較的簡単な手段で確実に行って、従来の自由支持の状態
から固定支持の状態に近づけて、開口部に生じる振動を
十分抑制することができる。(Function) As described above, in the present invention, sealing materials are inserted into the front and back sides of the rear plate, so that installation to the engine is possible using a transmission integral housing such as a clutch housing with an open end. The opening can be reliably restrained by relatively simple means, bringing the conventional free support state closer to a fixed support state, and vibrations generated in the opening can be sufficiently suppressed.

（実施例） 以下、第１図〜第５図について本発明の詳細な説明する
０図中４はリアプレートで、５．６はそれぞれ必要ケ所
に設けた開口、７はボルト孔である。(Example) Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 5. In FIG. 0, 4 is a rear plate, 5 and 6 are openings provided at necessary locations, and 7 is a bolt hole.

本実施例においては、車両のエンジンブロック１とトラ
ンスミッションケース２と結合したクラッチハウジング
３との間に介装するリアプレート４において、このリア
プレート４のエンジンブロック１例の要所にシール材挿
入用の凹溝８（第１゜２図参照）を設けると共に、この
リアプレート４のクラッチハウジング３側の要所にもシ
ール材挿入用の凹溝８（第３図参照）を設け、これら表
裏の凹溝８にそれぞれ直径ｄが２＋ｗのシール材９を挿
入して制振機能を有するリアプレート４を構成する。In this embodiment, in a rear plate 4 interposed between an engine block 1 of a vehicle and a clutch housing 3 coupled to a transmission case 2, a sealing material is inserted into key points of one example of the engine block of the rear plate 4. A groove 8 (see Fig. 1-2) is provided, and a groove 8 (see Fig. 3) for inserting a sealing material is also provided at key points on the clutch housing 3 side of the rear plate 4. A sealing material 9 having a diameter d of 2+w is inserted into each of the grooves 8 to constitute a rear plate 4 having a vibration damping function.

なお８ａは凹溝８をリアプレート４に形成した場合に、
その裏側（エンジン側）に表われる突条である。Note that 8a is when the groove 8 is formed on the rear plate 4.
This is a protrusion that appears on the back side (engine side).

またシール材９は、第２，３図に示すように断面が丸形
で、ゴム等の弾性物を素材として線状に形成されており
、その直径ｄは約２１である。Further, as shown in FIGS. 2 and 3, the sealing material 9 has a round cross section, is formed linearly from an elastic material such as rubber, and has a diameter d of approximately 21 mm.

自動車等の車両に搭載される変速機は、動力の伝達径路
であると共に、振動の伝達径路でもあり、特に、クラッ
チハウジングは振動の増幅器としての作用を行うため、
振動・騒音を対策する上で重要な部位となっている。Transmissions installed in vehicles such as automobiles are not only power transmission paths, but also vibration transmission paths, and in particular, clutch housings act as vibration amplifiers.
This is an important part in taking measures against vibration and noise.

変速機関係の振動・騒音の代表的なものには次の二つが
ある。There are two typical types of transmission-related vibration and noise:

（ａ）　　変速歯車の連続かみ合い時の歯の剛性変化に
起因するかみ合い振動（いわゆるギヤノイズ）にもとづ
く騒音。(a) Noise caused by meshing vibration (so-called gear noise) caused by changes in tooth rigidity during continuous meshing of transmission gears.

（ロ）エンジン出力のトルク変動により、変速歯車対が
衝撃的にかみ合うことに起因する振動（いわゆるガラ音
）にもとづく騒音。(b) Noise caused by vibrations (so-called rattling noise) caused by the impactful meshing of a pair of transmission gears due to fluctuations in engine output torque.

本発明は特にガラ音の低減を目的としている。The present invention is particularly aimed at reducing rattle noise.

第４図は、横座標にアイドル時の機関回転数（ｒｐｍ）
をとり、縦座標に放射騒音（ガラ音）レベル（ｄＢ）を
とり、従来のシール材なしのリアプレートを使用したも
の（点線Ｃで示す）と、直径２．５ｍのシール材を設け
たリアプレートを使用したもの（−点鎖線りで示す）と
、直径２ｍのシール材を設けたもの（実線Ｅで示す）と
の実験結果を示すものである。In Figure 4, the abscissa shows the engine speed at idle (rpm).
and the radiated noise (rattle sound) level (dB) is plotted on the ordinate.One uses a conventional rear plate without sealant (indicated by dotted line C), and the other uses a rear plate with a diameter of 2.5m and has a sealant. It shows the experimental results of one using a plate (indicated by a dashed line) and one using a sealing material with a diameter of 2 m (indicated by a solid line E).

また第５図は、横座標に音の周波数（Ｈ））をとり、縦
座標に放射騒音（ガラ音）レベル（ｄＢ）をとって示し
た実験結果である。FIG. 5 shows the experimental results, with the abscissa representing the sound frequency (H) and the ordinate representing the radiated noise level (dB).

これらの実験結果よりみて、本発明のものが最も有効な
消音効果があることがわかる。From these experimental results, it can be seen that the method of the present invention has the most effective noise reduction effect.

なおシール材の径が２ＩＩＩ！以下のものは、生産技術
上実用的ではない。The diameter of the seal material is 2III! The following are not practical in terms of production technology.

（発明の効果） 上述のように本発明においては、リアプレートの表裏に
それぞれ凹溝を形成してシール材を挿入したから、これ
によってエンジンへの取り付は端が開口された形状をし
たクラッチハウジング等の変速機一体ハウジングの開口
部の拘束を、比較的簡単な手段で確実に行って、従来の
自由支持の状態から固定支持の状態に近づけて、開口部
に生じるつりがね状の振動を十分抑制することができる
という効果が得られる。(Effects of the Invention) As described above, in the present invention, grooves are formed on the front and back of the rear plate and sealing material is inserted, so that the clutch can be attached to the engine with an open end. By reliably restraining the opening of a transmission integral housing such as a housing using relatively simple means, the conventional free support state can be brought closer to a fixed support state, and the ring-like vibrations generated at the opening can be reduced. This has the effect of being able to sufficiently suppress.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明リアプレートの正面図、第２図は第１図
のＡ−Ａ線による部分拡大断面図、 第３図は第１図のＢ−Ｂ線による部分拡大断面図、 第４図および第５図は実験結果を示す特性図、第６図は
自動車用エンジンとトランスミッションとの結合体の一
例を示す側面図、 第７図はその分解斜視図である。 １・・・エンジンブロック ２・・・トランスミッションケース ３・・・クラッチハウジング ４・・・リアプレート ５．６・・・開口 ア・・・ボルト孔 ８・・・凹溝 ８ａ・・・突条 ９・・・シール材 第１図 第２図 第３図 ７ＣΔでＩレトンＬ）1 is a front view of the rear plate of the present invention, FIG. 2 is a partially enlarged sectional view taken along line A-A in FIG. 1, FIG. 3 is a partially enlarged sectional view taken along line BB in FIG. 1, and FIG. 5 and 5 are characteristic diagrams showing experimental results, FIG. 6 is a side view showing an example of a combination of an automobile engine and a transmission, and FIG. 7 is an exploded perspective view thereof. 1...Engine block 2...Transmission case 3...Clutch housing 4...Rear plate 5.6...Opening a...Bolt hole 8...Concave groove 8a...Protrusion 9 ...Sealing material (Figure 1, Figure 2, Figure 3, 7CΔ and I reton L)

Claims (1)

【特許請求の範囲】[Claims] １、車両のエンジンブロックとトランスミッションケー
スと結合したクラッチハウジングとの間に介装するリア
プレートにおいて、このリアプレートのエンジンブロッ
ク側の要所にシール材挿入用の凹溝を設けると共に、こ
のリアプレートのクラッチハウジング側の要所にもシー
ル材挿入用の凹溝を設け、これら表裏の凹溝にそれぞれ
シール材を挿入したことを特徴とする制振機能を有する
リアプレート。1. In the rear plate interposed between the engine block of the vehicle and the clutch housing coupled to the transmission case, grooves for inserting sealing material are provided at important points on the engine block side of the rear plate, and grooves for inserting sealing material are provided in the rear plate. A rear plate having a vibration damping function characterized in that concave grooves for inserting sealing materials are also provided at important points on the clutch housing side of the plate, and sealing materials are inserted into each of these concave grooves on the front and back sides.
JP16144990A 1990-06-21 1990-06-21 Rear plate having vibration suppressing function Pending JPH0454224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16144990A JPH0454224A (en) 1990-06-21 1990-06-21 Rear plate having vibration suppressing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16144990A JPH0454224A (en) 1990-06-21 1990-06-21 Rear plate having vibration suppressing function

Publications (1)

Publication Number Publication Date
JPH0454224A true JPH0454224A (en) 1992-02-21

Family

ID=15735320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16144990A Pending JPH0454224A (en) 1990-06-21 1990-06-21 Rear plate having vibration suppressing function

Country Status (1)

Country Link
JP (1) JPH0454224A (en)

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