JP2008274968A - Damper with limiter for hybrid vehicle - Google Patents

Damper with limiter for hybrid vehicle Download PDF

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JP2008274968A
JP2008274968A JP2007115576A JP2007115576A JP2008274968A JP 2008274968 A JP2008274968 A JP 2008274968A JP 2007115576 A JP2007115576 A JP 2007115576A JP 2007115576 A JP2007115576 A JP 2007115576A JP 2008274968 A JP2008274968 A JP 2008274968A
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damper
limiter
plate
hybrid vehicle
torque
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JP4988422B2 (en
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Masahito Takeshita
仁人 竹下
Tatsuya Iida
達也 飯田
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Aisin AW Industries Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Mechanical Operated Clutches (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damper with a limiter, constituting a power transmission mechanism for a hybrid vehicle, for eliminating the dispersion of limiter torque. <P>SOLUTION: In an outer case 4 consisting of a front cover 14 and a rear cover 15 connected with a drive plate 17, the damper 1 is provided with a plurality of damper springs 5, 5. An outer periphery plate having a friction material is mounted on the outer periphery of a disc 8 of the damper 1 and clamped by a limiter plate 2 thrust by a disc spring 3. A hub 13 having a shaft hole 12 to which an output shaft 19 is fitted is mounted at the center of the damper 1. Lubricating oil can be filled in the outer case 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明はハイブリッド車に取付ける湿式のリミッタ付きダンパに関するものである。   The present invention relates to a damper with a wet limiter attached to a hybrid vehicle.

ハイブリッド車にはリミッタ付きダンパが取付けられ、衝撃トルクを緩和すると共に所定のトルクを超えるとスリップするように設定されている。従って、過大トルクが原因でダンパ及びその他のユニット(変速部)が破損しないような構造と成っている。図３はハイブリッド車に装着している動力伝達機構及び変速機構を表している概略図である。   The hybrid vehicle is provided with a damper with a limiter so as to reduce the impact torque and to slip when a predetermined torque is exceeded. Therefore, the structure is such that the damper and other units (transmission unit) are not damaged due to excessive torque. FIG. 3 is a schematic view showing a power transmission mechanism and a transmission mechanism mounted on the hybrid vehicle.

同図の（イ）はリミッタ付きダンパ、（ロ）はモータ、（ハ）は別のモータ、（ニ）はエンジン、（ホ）はプラネタリーギヤ、（ヘ）はオイルポンプ、（ト）はスプロケット、（チ）はチェーンを表している。そこで、上記２個のモータ（ロ）、（ハ）を用い、走行や発電、回生、更にエンジンの始動を行っている。   (B) is a motor, (c) is another motor, (d) is an engine, (e) is a planetary gear, (f) is an oil pump, and (g) is a damper with a limiter. Sprocket, (H) represents a chain. Therefore, the two motors (B) and (C) are used to run, generate power, regenerate, and start the engine.

そして一般的なハイブリッド車の場合、通常運転時にはエンジン（ニ）が作動するが、これらのトルクは出力軸（リ）へ伝達され、該出力軸（リ）からスプロケット（ト）及びチェーン（チ）を介して車軸を回転駆動している。そして、エンジン（ニ）から延びるクランクシャフト（ヌ）と上記出力軸（リ）との間にはリミッタ付きダンパ（イ）を介している。   In the case of a general hybrid vehicle, the engine (d) operates during normal operation, but these torques are transmitted to the output shaft (re), and the sprocket (g) and chain (h) are transmitted from the output shaft (re). The axle is driven to rotate through. A damper (b) with a limiter is interposed between the crankshaft (n) extending from the engine (d) and the output shaft (re).

上記リミッタ付きダンパ（イ）はダンパスプリング（ル）、（ル）・・を備え、そして外周部にはリミッタ（オ）を設けている。リミッタ付きダンパ（イ）とクランクシャフト（ヌ）との間にはフライホイール（ワ）が介在し、リミッタ付きダンパ（イ）の外周はフライホイール（ワ）にネジ止めされ、フライホイール（ワ）の内周はクランクシャフト（ヌ）にネジ止めされている。   The damper (a) with a limiter is provided with damper springs (le), (le), and a limiter (e) is provided on the outer periphery. A flywheel (wa) is interposed between the damper (a) with the limiter and the crankshaft (nu), and the outer periphery of the damper (a) with the limiter is screwed to the flywheel (wa). The inner periphery of is screwed to the crankshaft (nu).

ところで、ハイブリッド車では、エンジン（ニ）による走行時やモータ（ロ）によるエンジン始動時に走行負荷やエンジン負荷の変動により過大なトルクが発生することがある。そこで、過大なトルクが発生した際にはリミッタ（オ）が働いて滑りを発生する構造と成っている。   By the way, in a hybrid vehicle, excessive torque may be generated due to fluctuations in travel load or engine load during travel by the engine (d) or engine start by the motor (b). Thus, when excessive torque is generated, the limiter (e) is activated to cause slippage.

しかし、従来のリミッタトルクはそのバラツキが大きく、所定のトルクに達しても該リミッタが働かない場合が多い。すなわち、リミッタに設けている摩擦材の摩擦係数（μ）のバラツキが大きいことに起因する。特に、従来のような乾式摩擦材の係合面にはサビが発生することで摩擦係数（μ）が増大し、それに伴いリミッタトルクが極端に大きくなる。その結果、過大なトルクでダンパ及びその他のユニット(変速部)が破損する。   However, the conventional limiter torque has a large variation, and the limiter often does not work even when a predetermined torque is reached. In other words, this is due to the large variation in the friction coefficient (μ) of the friction material provided in the limiter. In particular, the friction coefficient (μ) increases due to the occurrence of rust on the engagement surface of the conventional dry friction material, and accordingly the limiter torque becomes extremely large. As a result, the damper and other units (transmission units) are damaged by excessive torque.

従って、従来ではリミッタトルクのバラツキを考慮して、動力伝達機構及び変速機構を設計しなくてはならず、出力軸（リ）の外径、及びダンパスプリング（ル）、（ル）・・等の寸法は必然的に大きくなる。しかし、下限のリミッタトルクを幾ら小さくしても、スリップしないようにエンジントルク及びエンジン始動トルク以上は必要である。   Therefore, conventionally, it is necessary to design the power transmission mechanism and the speed change mechanism in consideration of the variation of the limiter torque, the outer diameter of the output shaft (re), the damper springs (le), (le), etc. The size of inevitably increases. However, no matter how small the lower limiter torque is, the engine torque and the engine starting torque are required to prevent slipping.

このように、ハイブリッド車に装着される従来のリミッタ付きダンパには上記のごとき問題がある。本発明が解決しようとする課題はこの問題点であり、摩擦材の摩擦係数（μ）のバラツキを抑え、安定したリミッタトルクを具現することが出来るリミッタ付きダンパを提供する。   Thus, the conventional damper with limiter mounted on the hybrid vehicle has the above-mentioned problems. The problem to be solved by the present invention is this problem, and provides a damper with a limiter that can suppress variations in the friction coefficient (μ) of the friction material and can realize a stable limiter torque.

本発明のリミッタ付きダンパはクランクシャフトのトルクを出力軸へ伝達するに際して、間にダンパとリミッタを介在しており、この基本構造は従来と同じである。ダンパ外周には摩擦材が設けられ、この摩擦材を外周に取付けたリミッタプレートを介してバネ力を付勢し、摩擦材との間に摩擦力を発生している。ここで、上記バネとしては一般に皿バネを用いるが、特に限定するものではない。   The damper with a limiter of the present invention has a damper and a limiter interposed between them when transmitting the torque of the crankshaft to the output shaft, and this basic structure is the same as the conventional one. A friction material is provided on the outer periphery of the damper, and a spring force is urged through a limiter plate attached to the outer periphery of the damper to generate a friction force between the friction material. Here, a disc spring is generally used as the spring, but is not particularly limited.

そして、本発明のリミッタ付きダンパは湿式構造とし、その為に外ケースを備えて収容し、内部には潤滑油が満たされる。ここで、上記外ケースはフライホイールを兼ねたフロントカバーとリアカバーとが溶接にて構成されている。ダンパの中心にはハブが取着され、このハブに設けた軸穴には上記出力軸が嵌っている。そしてリアカバーの中心にはスリーブが設けられ、ハブに嵌った出力軸との隙間を外ケースへ供給される潤滑油が流れる。   And the damper with a limiter of this invention is made into a wet structure, is provided with the outer case for that purpose, and is filled with lubricating oil inside. Here, in the outer case, a front cover that also serves as a flywheel and a rear cover are formed by welding. A hub is attached to the center of the damper, and the output shaft is fitted in a shaft hole provided in the hub. A sleeve is provided at the center of the rear cover, and lubricating oil supplied to the outer case flows through a gap with the output shaft fitted in the hub.

本発明に係るリミッタ付きダンパは外ケースに収容されると共に、外ケース内には潤滑油が満たされた湿式構造であり、その為に該リミッタの摩擦材は常に一定の摩擦係数となる。すなわち、摩擦材係合面にサビ付きはなく、リミッタトルクのバラツキを抑えることが出来、リミッタ上限トルクが小さくなることで、比較的小さいリミッタトルクの設定が可能と成る。このことで、動力伝達機構及び変速機構を構成するシャフト径が小さくなり、全体寸法をコンパクト化することが可能と成る。   The damper with limiter according to the present invention has a wet structure in which the outer case is accommodated in the outer case and the outer case is filled with lubricating oil. Therefore, the friction material of the limiter always has a constant coefficient of friction. That is, there is no rust on the friction material engaging surface, variation in the limiter torque can be suppressed, and the limiter upper limit torque is reduced, so that a relatively small limiter torque can be set. As a result, the shaft diameter constituting the power transmission mechanism and the speed change mechanism is reduced, and the overall dimensions can be reduced.

図１は本発明に係るリミッタ付きダンパを示す実施例であり、断面図を表している。同図の１はダンパ、２はリミッタプレート、３は皿バネ、４は外ケースを夫々示している。上記ダンパ１はトルクコンバータに使用されるものと基本構造は同じであり、複数のダンパスプリング５，５・・を備え、各ダンパスプリング５，５・・はＡプレート６とＢプレート７によって挟まれると共に、Ａプレート６とＢプレート７に形成したバネ収容空間に収容されている。   FIG. 1 shows an embodiment of a damper with a limiter according to the present invention, and shows a sectional view. In the figure, 1 is a damper, 2 is a limiter plate, 3 is a disc spring, and 4 is an outer case. The damper 1 has the same basic structure as that used for the torque converter, and includes a plurality of damper springs 5,... Sandwiched between the A plate 6 and the B plate 7. At the same time, it is housed in a spring housing space formed in the A plate 6 and the B plate 7.

そして、Ａプレート６とＢプレート７の間にはディスク８と中間部材９が介在している。ここで、中間部材９は円盤状ディスク８の内径側に配置されて、対を成して配列した２本のダンパスプリング５，５を直列状態で連結している。又、ディスク８の外周にはリング状の外周プレート１０がリベットにて固定され、外周プレート１０の両面には摩擦材１１，１１が設けられている。そして、該外周プレート１０の片側にはリング状のリミッタプレート２が設けられ、リミッタプレート２は外ケース４との間に介在する皿バネ３にてバネ力が付勢されている。   A disk 8 and an intermediate member 9 are interposed between the A plate 6 and the B plate 7. Here, the intermediate member 9 is disposed on the inner diameter side of the disc-shaped disk 8 and connects two damper springs 5 and 5 arranged in pairs in series. A ring-shaped outer peripheral plate 10 is fixed to the outer periphery of the disk 8 with rivets, and friction materials 11 and 11 are provided on both surfaces of the outer peripheral plate 10. A ring-shaped limiter plate 2 is provided on one side of the outer peripheral plate 10, and the limiter plate 2 is energized by a disc spring 3 interposed between the limiter plate 2 and the outer case 4.

中心には軸穴１２を有すハブ１３が設けられているが、Ａプレート６の内周部に該ハブ１３が固定されている。外ケース４はフライホイールとしても機能するフロントカバー１４とリアカバー１５が溶接されて構成され、リアカバー１５の中心にはスリーブ１６を形成している。   A hub 13 having a shaft hole 12 is provided at the center, and the hub 13 is fixed to the inner peripheral portion of the A plate 6. The outer case 4 is configured by welding a front cover 14 and a rear cover 15 that also function as a flywheel, and a sleeve 16 is formed at the center of the rear cover 15.

フロントカバー１４にはドライブプレート１７がネジ止めにて取付けられ、該ドライブプレート１７はクランクシャフト（図示なし）と連結される。ここで、フロントカバー１４の中心にはクランクシャフトのセンター穴に嵌るセンターピース２１が設けられている。従って、クランクシャフトのトルクは上記ドライブプレート１７を介して外ケース４へ伝達され、ダンパ１を回転することが出来る。リミッタプレート２の外周にはスプライン歯が形成され、このスプライン歯は外ケース内周面に形成したスプライン溝と噛み合っている。   A drive plate 17 is attached to the front cover 14 with screws, and the drive plate 17 is connected to a crankshaft (not shown). Here, a center piece 21 is provided at the center of the front cover 14 so as to fit in the center hole of the crankshaft. Accordingly, the torque of the crankshaft is transmitted to the outer case 4 via the drive plate 17 so that the damper 1 can be rotated. Spline teeth are formed on the outer periphery of the limiter plate 2, and these spline teeth mesh with spline grooves formed on the inner peripheral surface of the outer case.

そこで、リミッタプレート２は外ケース４と共に回転し、上記皿バネ３にて押圧され、フロントカバー１４との間で挟まれた外周プレート１０が回転する。すなわち、外周プレート１０はその両面に摩擦材１１，１１が設けられている為に、スリップすることなくリミッタプレート２と共に回転し、同時にディスク８が回転する。そしてディスク８の回転トルクはダンパスプリング５，５・・を介してＡプレート６へ伝達され、ハブ１３の軸穴１２に嵌る出力軸を回転することになる。   Therefore, the limiter plate 2 rotates together with the outer case 4 and is pressed by the disc spring 3 so that the outer peripheral plate 10 sandwiched between the front cover 14 rotates. That is, since the friction plates 11 and 11 are provided on both sides of the outer peripheral plate 10, the outer peripheral plate 10 rotates together with the limiter plate 2 without slipping, and the disk 8 rotates at the same time. The rotational torque of the disk 8 is transmitted to the A plate 6 via the damper springs 5, 5..., And the output shaft fitted in the shaft hole 12 of the hub 13 is rotated.

図２は本発明のリミッタ付きダンパを動力伝達機構に装着した場合であり、上記ドライブプレート１７にはクランクシャフト１８が連結している。従って、該クランクシャフト１８によってドライブプレート１７、及び外ケース４が回転され、この回転トルクはディスク８へ伝達し、Ａプレート６からハブ１３の軸穴１２に嵌っている出力軸１９へ伝わって回転駆動する。   FIG. 2 shows a case where a damper with a limiter according to the present invention is mounted on a power transmission mechanism, and a crankshaft 18 is connected to the drive plate 17. Accordingly, the drive plate 17 and the outer case 4 are rotated by the crankshaft 18, and this rotational torque is transmitted to the disk 8 and transmitted from the A plate 6 to the output shaft 19 fitted in the shaft hole 12 of the hub 13 and rotated. To drive.

ところで、大きなトルクがダンパ１のディスク８に作用する場合、該ディスク８は滑って空転する。本発明では外ケース４内に潤滑油が満たされており、ディスク８が空転するリミットトルクはほぼ一定となる。すなわち、潤滑油にて摩擦材係合面がサビ付くことはなく、常に一定の摩擦係数が保たれる。   By the way, when a large torque acts on the disk 8 of the damper 1, the disk 8 slips and slips. In the present invention, the outer case 4 is filled with lubricating oil, and the limit torque at which the disk 8 idles is substantially constant. That is, the friction material engaging surface is not rusted by the lubricating oil, and a constant friction coefficient is always maintained.

潤滑油は出力軸１９がハブ１３の軸穴１２に嵌ることでスリーブ１６との間に形成される隙間を利用して流れることが出来る。例えば、出力軸１９の中心軸に穴を設けて潤滑油を外ケース４へ供給し、外ケース４内を一巡した潤滑油はスリーブ１６と出力軸１９との隙間から流出するように構成できる。特に、ハイブリット車の場合、エンジン始動時にはモータが起動して大きなトルクが発生する。このトルクが大きすぎる場合には、リミッタが作動してディスク８は空転する。従って、出力軸１９及びその他のユニットに過大なトルク負荷が発生することはなく、コンパクトな設計が可能と成る。   The lubricating oil can flow using a gap formed between the output shaft 19 and the sleeve 16 when the output shaft 19 is fitted in the shaft hole 12 of the hub 13. For example, a hole can be provided in the central axis of the output shaft 19 to supply the lubricating oil to the outer case 4, and the lubricating oil that has made a round in the outer case 4 can flow out of the gap between the sleeve 16 and the output shaft 19. In particular, in the case of a hybrid vehicle, when the engine is started, the motor is started and a large torque is generated. If this torque is too large, the limiter is activated and the disk 8 is idle. Therefore, an excessive torque load is not generated on the output shaft 19 and other units, and a compact design is possible.

本発明に係るリミッタ付きダンパを示す実施例。The Example which shows the damper with a limiter concerning this invention. リミッタ付きダンパを装着した動力伝達機構の具体例。A specific example of a power transmission mechanism equipped with a damper with a limiter. 従来の乾式リミッタ付きダンパを備えた動力伝達機構の概略図。Schematic of the power transmission mechanism provided with the damper with the conventional dry-type limiter.

符号の説明Explanation of symbols

１ ダンパ
２ リミッタプレート
３ 皿バネ
４ 外ケース
５ ダンパスプリング
６ Ａプレート
７ Ｂプレート
８ ディスク
９ 中間部材
10 外周プレート
11 摩擦材
12 軸穴
13 ハブ
14 フロントカバー
15 リアカバー
16 スリーブ
17 ドライブプレート
18 クランクシャフト
19 出力軸
21 センターピース
1 damper 2 limiter plate 3 disc spring 4 outer case 5 damper spring 6 A plate 7 B plate 8 disc 9 intermediate member
10 Outer plate
11 Friction material
12 Shaft hole
13 Hub
14 Front cover
15 Rear cover
16 sleeve
17 Drive plate
18 Crankshaft
19 Output shaft
21 Centerpiece

Claims (3)

ハイブリッド車の動力伝達機構を構成するリミッタ付きダンパにおいて、ドライブプレートが連結するフロントカバーとリアカバーとで構成する外ケース内には複数本のダンパスプリングを備えたダンパを設け、該ダンパのディスク外周部に摩擦材を設けると共にバネにて押圧したリミッタプレートでディスク外周部をフロントカバーとの間で挟み込み、ダンパの中心には出力軸が嵌る軸穴を形成したハブを取着し、上記外ケース内には潤滑油を充填したことを特徴とするハイブリッド車用のリミッタ付きダンパ。 In a damper with a limiter that constitutes a power transmission mechanism of a hybrid vehicle, a damper having a plurality of damper springs is provided in an outer case constituted by a front cover and a rear cover to which a drive plate is connected, and a disk outer periphery of the damper A friction plate is provided on the outer periphery of the disc with the front cover with a limiter plate pressed by a spring, and a hub with a shaft hole into which the output shaft fits is attached to the center of the damper. Is a damper with a limiter for hybrid vehicles, which is filled with lubricating oil. 上記ディスク外周に摩擦材を設けた外周プレートを取着し、該外周プレートをリミッタプレートとフロントカバーとの間で挟み込んだ請求項１記載のハイブリット車用のリミッタ付きダンパ。 2. A damper with a limiter for a hybrid vehicle according to claim 1, wherein an outer peripheral plate provided with a friction material is attached to the outer periphery of the disk, and the outer peripheral plate is sandwiched between a limiter plate and a front cover. 上記バネとして皿バネを使用し、リアカバーとリミッタプレートの間にハブの軸穴とほぼ同心を成す上記皿バネを介在した請求項１、又は請求項２記載のハイブリッド車用のリミッタ付きダンパ。 The damper with a limiter for a hybrid vehicle according to claim 1 or 2, wherein a disc spring is used as the spring, and the disc spring interposed between the rear cover and the limiter plate is substantially concentric with the shaft hole of the hub.
JP2007115576A 2007-04-25 2007-04-25 Damper with limiter for hybrid vehicles Active JP4988422B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009062022A (en) * 2007-09-10 2009-03-26 Aisin Aw Industries Co Ltd Mounting structure of damper with limiter for hybrid vehicle
JP2010065750A (en) * 2008-09-10 2010-03-25 Aisin Seiki Co Ltd Damper device
WO2010050620A1 (en) * 2008-10-30 2010-05-06 Aisin Aw Industries Co., Ltd. Damper having torque limiter function
JP2010236601A (en) * 2009-03-31 2010-10-21 Aisin Seiki Co Ltd Torque fluctuation absorbing device
JP2011012714A (en) * 2009-06-30 2011-01-20 Aisin Aw Industries Co Ltd Damper
JP2011074965A (en) * 2009-09-29 2011-04-14 Aisin Aw Industries Co Ltd Torsion damper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003013992A (en) * 2001-06-26 2003-01-15 Aisin Aw Co Ltd Damper unit with torque limiter
JP2003090354A (en) * 2001-09-19 2003-03-28 Toyota Motor Corp Limiter device of excessive torque

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003013992A (en) * 2001-06-26 2003-01-15 Aisin Aw Co Ltd Damper unit with torque limiter
JP2003090354A (en) * 2001-09-19 2003-03-28 Toyota Motor Corp Limiter device of excessive torque

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009062022A (en) * 2007-09-10 2009-03-26 Aisin Aw Industries Co Ltd Mounting structure of damper with limiter for hybrid vehicle
JP2010065750A (en) * 2008-09-10 2010-03-25 Aisin Seiki Co Ltd Damper device
WO2010050620A1 (en) * 2008-10-30 2010-05-06 Aisin Aw Industries Co., Ltd. Damper having torque limiter function
DE112009001841T5 (en) 2008-10-30 2011-07-28 AISIN AW INDUSTRIES CO., LTD:, Fukui-ken Damper with torque limiting function
US8398492B2 (en) 2008-10-30 2013-03-19 Aisin Aw Industries Co., Ltd. Damper having torque limiter function
DE112009001841B4 (en) * 2008-10-30 2014-02-13 Aisin Aw Industries Co., Ltd: Damper with torque limiting function
US8858344B2 (en) 2008-10-30 2014-10-14 Aisin Aw Industries Co., Ltd. Damper having torque limiter function
US9964169B2 (en) 2008-10-30 2018-05-08 Aisin Aw Industries Co., Ltd. Damper having torque limiter function
JP2010236601A (en) * 2009-03-31 2010-10-21 Aisin Seiki Co Ltd Torque fluctuation absorbing device
JP2011012714A (en) * 2009-06-30 2011-01-20 Aisin Aw Industries Co Ltd Damper
JP2011074965A (en) * 2009-09-29 2011-04-14 Aisin Aw Industries Co Ltd Torsion damper

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