JPS63210413A - Chain noise reducing mechanism in transfer mechanism - Google Patents
Chain noise reducing mechanism in transfer mechanismInfo
- Publication number
- JPS63210413A JPS63210413A JP62044015A JP4401587A JPS63210413A JP S63210413 A JPS63210413 A JP S63210413A JP 62044015 A JP62044015 A JP 62044015A JP 4401587 A JP4401587 A JP 4401587A JP S63210413 A JPS63210413 A JP S63210413A
- Authority
- JP
- Japan
- Prior art keywords
- sprocket
- torque
- chain
- viscoelastic body
- transfer mechanism
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/066—Ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/63—Gears with belts and pulleys
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は前輪駆動用のチェーンを有するトランスファー
機構で発生するチェーンノイズを粘弾性体によって吸収
することにより抑制したトランスファー機構におけるチ
ェーンノイズ低減機構に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a chain noise reduction mechanism in a transfer mechanism that suppresses chain noise generated in a transfer mechanism having a front wheel drive chain by absorbing it with a viscoelastic body. .
４輪駆動用のトランスファー機構として、例えば、入力
したトルクを前後輪に分配するトルク分配部と、分配さ
れた前後輪用トルクを出力する前後輪用トルク出力部を
備え、前輪用トルク出力部と前輪駆動軸に設けられたス
プロケットにチェーンを掛けることによって前輪にトル
クを伝達するようにしたものがある。As a transfer mechanism for four-wheel drive, for example, a torque distribution section that distributes input torque to the front and rear wheels, and a front and rear wheel torque output section that outputs the distributed torque for the front and rear wheels, and a torque output section for the front wheels and a torque output section for the front and rear wheels that output the distributed torque for the front and rear wheels. There is one that transmits torque to the front wheels by hooking a chain to a sprocket installed on the front wheel drive shaft.
このトランスファー機構によれば、人力したトルクは分
配部において前後輪の負荷に応じて分配された後、前後
輪用トルク出力部に出力される。出力された前輪用トル
クはスプロケットに掛けられたチェーンを介して前輪駆
動軸に伝達され、後輪用トルクは後輪駆動軸に伝達され
ることにより４輪駆動の走行が行われる。According to this transfer mechanism, the manually applied torque is distributed in the distribution section according to the load on the front and rear wheels, and then is output to the front and rear wheel torque output section. The output torque for the front wheels is transmitted to the front wheel drive shaft via a chain attached to the sprocket, and the torque for the rear wheels is transmitted to the rear wheel drive shaft, thereby performing four-wheel drive driving.
しかし、前述した４輪駆動トランスファー機構によれば
、前輪トルク出力部のスプロケットと前輪駆動軸のスプ
ロケットの軸芯平行度の精度向上を図っても限度がある
ため、前記軸芯平行度のずれに基づいてチェーンノイズ
が発生するとともにチェーンとスプロケットの噛合時に
周期的振動が発生し、これらがスプロケットから軸受を
介して放射音あるいは伝搬音としてケースに伝わるとい
う不都合がある。However, according to the four-wheel drive transfer mechanism described above, there is a limit to the accuracy of the parallelism of the axes of the sprocket of the front wheel torque output section and the sprocket of the front wheel drive shaft. As a result, chain noise is generated, and periodic vibrations are also generated when the chain and sprocket engage, and these are transmitted from the sprocket to the case as radiated or propagated sound via the bearings.
〔問題点を解決しようとするための手段〕本発明は上記
に鑑みてなされたものであり、前述したチェーンノイズ
を抑制するため、スプロケットを支持する軸受とケース
の間に粘弾性体を設けるようにしたトランスファー機構
におけるチェーンノイズ低減機構を提供するものである
。[Means for Solving the Problems] The present invention has been made in view of the above problems, and in order to suppress the aforementioned chain noise, a viscoelastic body is provided between the bearing that supports the sprocket and the case. The present invention provides a chain noise reduction mechanism for a transfer mechanism.
本発明によれば、スプロケットを支持する軸受とケース
の間に、例えば、ゴム、プラスチック等の粘弾性体が変
形可能な状態で配設される。この粘弾性体とスプロケッ
トで構成される振動系の共振周波数「、は、チェーンノ
イズとして問題となる周波数ｆ、より充分小さいのでス
プロケットに発生した振動は粘弾性体によって吸収され
るため、ケースへの伝搬が減少してノイズが抑制される
。According to the present invention, a viscoelastic body such as rubber or plastic is disposed in a deformable state between the bearing that supports the sprocket and the case. The resonant frequency of the vibration system consisting of the viscoelastic body and the sprocket is much smaller than the frequency f, which causes problems as chain noise, so the vibrations generated in the sprocket are absorbed by the viscoelastic body, so there is no impact on the case. Propagation is reduced and noise is suppressed.
以下本発明によるトランスファー機構におけるチェーン
ノイズの低減機構を詳細に説明する。The chain noise reduction mechanism in the transfer mechanism according to the present invention will be described in detail below.
第１図はトランスファー機構を示し、トルク入力部Ａと
、トルク分配部Ｂと、差動制限部Ｃと、前後輪トルク出
力部り、Ｅと、前後輪軸駆動部Ｆ、Ｇより構成されてい
る。トルク入力部Ａはトランスミッション（図示せず）
から駆動トルクを入力する入力軸１を有し、トルク分配
部Ｂは入力軸ｌのトルクを入力するプラネタリギヤ２と
、プラネタリギヤ２と噛合するサンギヤ３およびリング
ギヤ４より成る遊星歯車機構を有する。差動制限部Ｃは
サンギヤ３とスプライン結合する内側シリンダ５と、リ
ングギヤ４とボルトによって結合された外側シリンダ６
（各シリンダ５．６は交互に配列されたクラッチ板を
有し、かつ、内部に粘性体を収容している）より成るビ
スコースカップリングを有する。前輪トルク出力部りは
サンギヤ３とスプライン結合したスプロケット７と、前
輪駆動軸（図示せず）に接続されるスプロケット８と、
スプロケット７．８に掛けられたチェーン９を有し、後
輪トルク出力部Ｅはリンクギヤ４と噛合してギヤ部１０
ａを備えた出力軸１０を有する。ここで、スプロケット
８は軸受１１．１２によって支持され軸受１１．１２と
ケース１３との間に粘弾性体機構１４．１５が配設され
ている。また、前輪軸駆動部Ｆはスプロケット８の軸と
スプライン結合したコンパニオンフランジ１６を有し、
このコンパニオンフランジ１６とケース１３との間にオ
イルシール１７が設けられ、一方、後輪軸駆動部Ｇは出
力軸ＩＯとスプライン結合したコンパニオンフランジ１
８を有する。Figure 1 shows the transfer mechanism, which is composed of a torque input section A, a torque distribution section B, a differential limiting section C, a front and rear wheel torque output section E, and a front and rear wheel shaft drive section F, G. . Torque input part A is a transmission (not shown)
The torque distribution section B has an input shaft 1 that inputs the driving torque from the input shaft 1, and a planetary gear mechanism that includes a planetary gear 2 that inputs the torque of the input shaft 1, and a sun gear 3 and a ring gear 4 that mesh with the planetary gear 2. The differential limiting portion C includes an inner cylinder 5 connected to the sun gear 3 by spline, and an outer cylinder 6 connected to the ring gear 4 by bolts.
(Each cylinder 5.6 has alternating clutch plates and contains a viscous material inside). The front wheel torque output section includes a sprocket 7 spline-coupled to the sun gear 3, and a sprocket 8 connected to the front wheel drive shaft (not shown).
It has a chain 9 hooked on a sprocket 7.8, and the rear wheel torque output section E meshes with the link gear 4 to generate a gear section 10.
It has an output shaft 10 with a. Here, the sprocket 8 is supported by a bearing 11.12, and a viscoelastic body mechanism 14.15 is disposed between the bearing 11.12 and the case 13. Further, the front wheel shaft drive portion F has a companion flange 16 spline-coupled to the shaft of the sprocket 8,
An oil seal 17 is provided between the companion flange 16 and the case 13, and the rear axle drive unit G is connected to the companion flange 1 spline-coupled to the output shaft IO.
It has 8.
前述した粘弾性体機構１４（１５は図示を省略するが、
１４に対し左右対称に取付けられている）は、第２図（
ａｌ、（ｂｌ、（Ｃ１に示すように、軸受１１に被嵌さ
れた底部金属体１４ａと、所定の高さの脚部１４ｂを有
した粘弾性体１４ｃと、粘弾性体１４ｃを被嵌して底部
金属体１４ａとの間に偏心量規制ギャップｇ、と軸方向
規制ギャップｇ２を形成する上面金属体１４ｄを有する
。この粘弾性体機構１４とスプロット８の関係は、無負
荷時（第２図（ａ））に所定の軸芯Ｏより下方にずれて
も、偏心量規制ギャップｇＩによって定まる量以上に偏
芯しいないように組立てられている。また、粘弾性体１
４ｃの剛性は通常の負荷時（第２図（ｂ））にチェーン
９のテンションによってスプロケット８の軸芯が所定の
軸芯Ｏと一致するように設定されている。The above-mentioned viscoelastic body mechanism 14 (15 is omitted from illustration,
14) is shown in Fig. 2 (
al, (bl, (As shown in C1, the bottom metal body 14a is fitted on the bearing 11, the viscoelastic body 14c has legs 14b of a predetermined height, and the viscoelastic body 14c is fitted on the bottom metal body 14a. The upper surface metal body 14d forms an eccentric amount regulating gap g and an axial direction regulating gap g2 with the bottom metal body 14a. As shown in Figure (a), even if the viscoelastic body 1 deviates downward from the predetermined axis O, it is not eccentric by an amount determined by the eccentricity regulating gap gI.
The rigidity of sprocket 4c is set so that the axis of sprocket 8 coincides with a predetermined axis O due to the tension of chain 9 under normal load (FIG. 2(b)).
以上の構成において、入力軸ｌより駆動トルクを入力す
ると、遊星歯車機構のプラネタリギヤ２に入力して前後
輪の負荷状態に応じてサンギヤ３およびリングギヤ４に
分配される。この際、サンギヤ３およびリングギヤ４は
ビスコースカップリングを形成する内外のシリンダ５．
６によって差動を制限され、そのトルクをスプロケット
７および出力軸１０に伝達する。スプロケット７のトル
クはチェーン９、スプロケット８を介してコンパニオン
フランジ１６に接続された前輪軸（図示せず）を駆動し
、出力軸１０のトルクはコンパニオンフランジ１８に接
続された後輪軸（図示せず）を駆動する。In the above configuration, when driving torque is input from the input shaft 1, it is input to the planetary gear 2 of the planetary gear mechanism and distributed to the sun gear 3 and the ring gear 4 according to the load state of the front and rear wheels. At this time, the sun gear 3 and the ring gear 4 are connected to the inner and outer cylinders 5 and 5 forming a viscose coupling.
6 limits the differential and transmits its torque to the sprocket 7 and output shaft 10. The torque of the sprocket 7 drives the front wheel axle (not shown) connected to the companion flange 16 via the chain 9 and sprocket 8, and the torque of the output shaft 10 drives the rear wheel axle (not shown) connected to the companion flange 18. ) to drive.
以上の操作において、前輪の無負荷時には、チェーン９
のテンションが無くなるため、第２図（ａ）のように、
スプロケット８の軸芯は所定の軸芯０より偏芯量規制ギ
ヤツブｇ１だけ下り、過負荷になると、第２図（Ｃ１の
ように、スプロケット８の軸芯は所定の軸芯０より上昇
するが、最大偏芯量は偏芯■規制ギャップｇ、によって
規制される。一方、通常の負荷状態では、第２図Ｔｂ）
に示すように、スプロケット８の軸芯が所定の軸芯Ｏと
一敗するよう位置にあってトルクを伝達する。また、ス
プロケット８は粘弾性体機構１４．１５による柔支持構
造となるが、軸方向規制ギャップｇ！によって軸方向の
移動量が最大ｇ２に制限されるため、前述の偏芯量の規
制と相俟ってオイルシール１７における油漏れや、チェ
ーン９のはずれを防止することができる。In the above operation, when the front wheel is not loaded, the chain 9
As the tension disappears, as shown in Figure 2 (a),
The axial center of the sprocket 8 is lowered from the predetermined axial center 0 by the amount of eccentricity regulating gear g1, and when an overload occurs, the axial center of the sprocket 8 rises from the predetermined axial center 0, as shown in Fig. 2 (C1). , the maximum eccentricity is regulated by the eccentricity ■ regulation gap g. On the other hand, under normal load conditions, the maximum eccentricity is regulated by the eccentricity (Tb) in Fig. 2
As shown in the figure, the axis of the sprocket 8 is positioned so as to be flush with the predetermined axis O, thereby transmitting torque. Furthermore, the sprocket 8 has a flexible support structure using the viscoelastic body mechanism 14.15, but the axial regulation gap g! Since the amount of movement in the axial direction is limited to the maximum g2, in combination with the above-mentioned regulation of eccentricity, oil leakage in the oil seal 17 and dislocation of the chain 9 can be prevented.
尚、以上の実施例では、スプロケット８の部分にのみ粘
弾性機構を設けたが、スプロケット７の部分にも設ける
ようにしても良い。In the above embodiment, the viscoelastic mechanism was provided only in the sprocket 8 portion, but it may also be provided in the sprocket 7 portion.
以上説明した通り、本発明のトランスファー機構におけ
るチェーンノイズ低減機構によれば、スプロケットを支
持する軸受とケースの間に粘弾性体を設けるようにした
ため、スプロケットに発止した振動を粘弾性体で吸収し
てチェーンノイズを抑制することができる。As explained above, according to the chain noise reduction mechanism in the transfer mechanism of the present invention, since the viscoelastic body is provided between the bearing and the case that support the sprocket, the vibration generated in the sprocket is absorbed by the viscoelastic body. chain noise can be suppressed.
第１図は本発明の一実施例を示す断面図。
第２図（ａｌ、（ｂｌ、（Ｃ）は本発明の一実施例にお
ける要部を示す断面図。
符号の説明FIG. 1 is a sectional view showing one embodiment of the present invention. Figures 2 (al, bl, and (C) are cross-sectional views showing essential parts in an embodiment of the present invention. Explanation of symbols
Claims (1)
る一対のスプロケットおよび該一対のスプロケットに掛
けられたチェーンを備えたトランスファー機構において
、 前記一対のスプロケットの中の少なくとも 出力側に位置するスプロケットを支持する軸受と該軸受
を支持するケースとの間に粘弾性体機構を配設したこと
を特徴とするトランスファー機構におけるチェーンノイ
ズ低減機構。[Scope of Claims] A transfer mechanism comprising a torque distribution means for distributing input torque to front and rear wheel torque, a pair of sprockets for transmitting the front wheel torque to the front wheels, and a chain hooked to the pair of sprockets. , A chain noise reduction mechanism in a transfer mechanism, characterized in that a viscoelastic body mechanism is disposed between a bearing that supports at least one of the pair of sprockets located on the output side and a case that supports the bearing. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62044015A JPS63210413A (en) | 1987-02-26 | 1987-02-26 | Chain noise reducing mechanism in transfer mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62044015A JPS63210413A (en) | 1987-02-26 | 1987-02-26 | Chain noise reducing mechanism in transfer mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63210413A true JPS63210413A (en) | 1988-09-01 |
Family
ID=12679857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62044015A Pending JPS63210413A (en) | 1987-02-26 | 1987-02-26 | Chain noise reducing mechanism in transfer mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63210413A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1004763C2 (en) * | 1996-12-12 | 1998-06-15 | Skf Ind Trading & Dev | Rolling element bearing system for rotating machinery e.g. vehicles, domestic appliances, motors |
| WO1998026190A1 (en) * | 1996-12-12 | 1998-06-18 | Skf Engineering And Research Centre B.V. | Rolling element bearing system with improved damping |
| WO2015063882A1 (en) * | 2013-10-30 | 2015-05-07 | 三菱電機株式会社 | Electric motor and bearing structure |
-
1987
- 1987-02-26 JP JP62044015A patent/JPS63210413A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1004763C2 (en) * | 1996-12-12 | 1998-06-15 | Skf Ind Trading & Dev | Rolling element bearing system for rotating machinery e.g. vehicles, domestic appliances, motors |
| WO1998026190A1 (en) * | 1996-12-12 | 1998-06-18 | Skf Engineering And Research Centre B.V. | Rolling element bearing system with improved damping |
| WO2015063882A1 (en) * | 2013-10-30 | 2015-05-07 | 三菱電機株式会社 | Electric motor and bearing structure |
| JP5885896B2 (en) * | 2013-10-30 | 2016-03-16 | 三菱電機株式会社 | Electric motor and bearing structure |
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