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JPH0650169A - Gear shift unit for driving engine auxiliary machine - Google Patents

Gear shift unit for driving engine auxiliary machine

Info

Publication number
JPH0650169A
JPH0650169AJP4205615AJP20561592AJPH0650169AJP H0650169 AJPH0650169 AJP H0650169AJP 4205615 AJP4205615 AJP 4205615AJP 20561592 AJP20561592 AJP 20561592AJP H0650169 AJPH0650169 AJP H0650169A
Authority
JP
Japan
Prior art keywords
pulley
auxiliary machine
output member
clutch mechanism
planetary gear
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
JP4205615A
Other languages
Japanese (ja)
Inventor
Shuzo Hiragushi
周三 平櫛
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko 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 Koyo Seiko Co LtdfiledCriticalKoyo Seiko Co Ltd
Priority to JP4205615ApriorityCriticalpatent/JPH0650169A/en
Publication of JPH0650169ApublicationCriticalpatent/JPH0650169A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To provide a gear shift unit which is reduced in size and attached directly to an auxiliary machine and low in load capacity. CONSTITUTION:A unit A comprises a boss part 5b fixed to the housing B1 of an auxiliary machine B, and a coupling part 1d coupled to the drive shaft B2 of the auxiliary machine B. A planetary gear mechanism P is arranged on the inner peripheral side of a pulley 2 and size is reduced. A centrifugal clutch 8 mechanism is operated at a given number of revolutions or more to work the planetary gear mechanism P. By forming together the devices to form a unit, the unit can be attached to each of auxiliary machines B. Load capacity is reduced and size is further reduced.

Description

Translated fromJapanese
【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、エンジンの回転を変
速して補機に伝えるエンジン補機駆動用変速装置に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine accessory drive transmission for changing the rotation of an engine and transmitting it to an accessory.

【0002】[0002]

【従来の技術および発明が解決しようとする課題】自動
車等の補機駆動用変速装置は、エンジンからの回転入力
で補機の回転駆動を行うのに際し、エンジンの始動・低
速時には、エンジン側の回転を増速して補機側の駆動軸
に伝達しなければならない。従来、遊星ギア機構内の所
定部の回転を、電気的な制動手段により拘束することに
より、プーリの回転数に応じて2段階の出力側回転数を
得るようにした装置が提供されている。
2. Description of the Related Art A transmission device for driving an auxiliary machine of an automobile or the like is designed to drive an auxiliary machine by a rotational input from the engine. The rotation must be accelerated and transmitted to the drive shaft on the accessory side. 2. Description of the Related Art Conventionally, there has been provided a device in which the rotation of a predetermined portion in a planetary gear mechanism is restrained by an electric braking means to obtain two stages of output side rotation speed according to the rotation speed of a pulley.

【0003】しかし、上記の制動手段を作動させるため
の、装置外部のバッテリからの電源入力が必要となり、
そのエネルギ消費は、エンジンの運転上、不都合であ
る。また、外部からの入力による制動では、タイミング
が遅れて、エンジンの始動・低速状態における補機増速
効果が十分に発揮されない。さらに、電気的な制動手段
としての、例えば電磁クラッチ等は、構造が複雑である
うえに変速装置の大型化を招く。
However, in order to operate the above braking means, it is necessary to input power from a battery outside the device,
The energy consumption is inconvenient for the operation of the engine. Further, in the braking by the input from the outside, the timing is delayed, and the effect of increasing the speed of the auxiliary machine at the engine starting / low speed state is not sufficiently exerted. Further, for example, an electromagnetic clutch as an electric braking means has a complicated structure and causes an increase in size of the transmission.

【0004】一方、従来は、エンジンからの駆動回転を
単一の変速装置を介して変速し、これをベルトを介して
複数の補機へ動力を伝達していた。したがって、上記の
変速装置には、複数の補機を駆動するための駆動力を加
算したものが負荷されることになり、変速装置の負荷容
量が大きかった。また、負荷容量が大きいために、変速
装置が大型化するという問題があった。
On the other hand, conventionally, the drive rotation from the engine is shifted through a single transmission, and the power is transmitted to a plurality of auxiliary machines through a belt. Therefore, the above-described transmission is loaded with a sum of driving forces for driving a plurality of auxiliary machines, and the load capacity of the transmission is large. Further, since the load capacity is large, there is a problem that the transmission becomes large.

【0005】この発明は、小型で補機に直接取り付ける
ことができ負荷容量を小さくすることができるエンジン
補機駆動用変速ユニットを提供することを目的とする。
An object of the present invention is to provide a transmission unit for driving an engine accessory, which is small in size and can be directly attached to an accessory and can reduce load capacity.

【0006】[0006]

【課題を解決するための手段】上記の目的を達成するた
め、この発明に係るエンジン補機駆動用変速ユニット
は、筒状をしており、その外周面に伝動帯が巻き掛けら
れる伝動面を形成した入力用プーリと、このプーリの内
周側に配置され、外筒部、内筒部およびこれらの一端部
どうしを連結する側壁部を有する二重筒に形成されると
ともに、内筒部の内周面に、補機の駆動軸への連結部を
有する出力部材と、プーリと出力部材との間に介在して
両者を一体回転可能に連結するとともに、所定の回転数
以上で両者の連結を解除する遠心クラッチ機構と、プー
リと一体回転可能に設けられ、内周面にリングギアを形
成した環状の内歯部材と、内歯部材と同軸に配置され、
補機のハウジングに固定される固定部を有するとともに
外周面にサンギアを形成した外歯部材と、外歯部材のサ
ンギア、これに噛み合わされ且つキャリアによって回転
自在に支持された遊星ギア群、および内歯部材のリング
ギアを含む遊星ギア機構と、キャリアと出力部材との間
に介在した一方向クラッチ機構とを備え、上記遠心クラ
ッチ機構、内歯部材、遊星ギア機構、外歯部材および一
方向クラッチ機構は、出力部材の外筒部と内筒部との間
に収容されていることを特徴とするものである。
To achieve the above object, an engine accessory drive speed change unit according to the present invention has a cylindrical shape and has a transmission surface around which a transmission band is wound. The formed input pulley is formed into a double cylinder having an outer cylinder portion, an inner cylinder portion, and a side wall portion connecting the one end portions of the outer cylinder portion and the inner peripheral portion of the pulley, and the inner cylinder portion The output member having a connecting portion to the drive shaft of the auxiliary machine on the inner peripheral surface is interposed between the pulley and the output member to rotatably connect them together and to connect them at a predetermined rotation speed or more. A centrifugal clutch mechanism for releasing, a ring-shaped internal tooth member having a ring gear formed on the inner peripheral surface, which is provided so as to be rotatable integrally with the pulley, and arranged coaxially with the internal tooth member,
An external tooth member having a fixed portion fixed to a housing of an auxiliary machine and having a sun gear formed on an outer peripheral surface, a sun gear of the external tooth member, a planetary gear group meshed with the sun gear and rotatably supported by a carrier, and an inner A planetary gear mechanism including a ring gear of a tooth member, and a one-way clutch mechanism interposed between a carrier and an output member. The centrifugal clutch mechanism, the inner tooth member, the planetary gear mechanism, the outer tooth member and the one-way clutch. The mechanism is characterized in that it is housed between the outer tubular portion and the inner tubular portion of the output member.

【0007】[0007]

【作用】上記の構成のエンジン補機駆動用変速ユニット
によれば、プーリの回転が所定の回転数を超えない状態
では、出力部材が遠心クラッチを介してプーリと一体に
回転しており、プーリの回転がそのまま駆動軸に伝達さ
れる。このとき、遊星ギア機構のキャリアと出力部材と
の間に設けた一方向クラッチ機構は滑っている。
According to the engine accessory drive speed changing unit having the above structure, the output member rotates integrally with the pulley via the centrifugal clutch when the rotation of the pulley does not exceed a predetermined rotation speed. Rotation is transmitted to the drive shaft as it is. At this time, the one-way clutch mechanism provided between the carrier of the planetary gear mechanism and the output member is slipping.

【0008】一方、プーリの回転が所定の回転数以上に
なると、遠心クチッチ機構が作動して、当該遠心クラッ
チ機構によるプーリと出力部材との連結が解除される。
これにより、プーリの回転は、内歯部材、遊星ギア、キ
ャリア、一方向クラッチおよび出力部材を介して、所定
の変速比をもって駆動軸に伝達されることになる。筒状
のプーリの内周側に、変速のための遊星ギア機構を含む
各部材を配置したので、全体を小型にすることができ
る。このように小型であり、しかも、各補機のハウジン
グに取り付けるための固定部、および各補機の駆動軸に
連結するための連結部を設けてユニット化してあるの
で、各補機のそれぞれに直接取り付けて用いることが可
能となる。
On the other hand, when the rotation of the pulley exceeds a predetermined number of rotations, the centrifugal cut-out mechanism operates and the connection between the pulley and the output member by the centrifugal clutch mechanism is released.
As a result, the rotation of the pulley is transmitted to the drive shaft through the internal gear member, the planet gear, the carrier, the one-way clutch and the output member with a predetermined gear ratio. Since each member including the planetary gear mechanism for speed change is arranged on the inner peripheral side of the cylindrical pulley, the overall size can be reduced. As such, it is compact and has a fixed part for attaching to the housing of each accessory and a connecting part for connecting to the drive shaft of each accessory, so it is unitized. It can be directly attached and used.

【0009】しかも、出力部材によって、変速ユニット
のハウジングを兼ねさせることができる。
Moreover, the output member can also serve as the housing of the transmission unit.

【0010】[0010]

【実施例】以下実施例を示す添付図面によって詳細に説
明する。図1は、この発明の一実施例としてのエンジン
補機駆動用変速ユニットの概略断面図である。同図を参
照して、このエンジン補機駆動用変速ユニット(以下、
実施例において、単に変速ユニットAという)は、例え
ば、冷却ファン、エアコン用コンプレッサおよびオルタ
ネータ等の補機BのハウジングB1および駆動軸B2に
取り付けられており、エンジンE側の回転を、低回転時
のみに増速して、補機B側に伝達するものである(図2
参照)。なお、以下において、図においての左右を左右
という。
Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 is a schematic sectional view of a transmission unit for driving an engine accessory as an embodiment of the present invention. Referring to the same figure, this engine accessory drive speed change unit (hereinafter,
In the embodiment, the transmission unit A is simply attached to the housing B1 and the drive shaft B2 of the auxiliary machine B such as a cooling fan, a compressor for an air conditioner, and an alternator. Only the speed is increased and transmitted to the auxiliary machine B side (Fig. 2
reference). In the following, left and right in the drawings are referred to as left and right.

【0011】図1を参照して、変速ユニットAは、伝動
帯としてのベルトDが巻き掛けられる筒状のプーリ2
と、このプーリ2に一体に形成され、内周面にリングギ
ア3aを形成した内歯部材3と、補機BのハウジングB
1に固定される固定部としてのボス部5bを有し、外周
面にサンギア5aを形成した外歯部材5と、プーリ2の
内周側に配置された二重筒からなり、内筒部1bの内周
面に、補機Bの駆動軸B2への連結部1dを有する出力
部材1と、上記リングギア3a、キャリア10によって
支持された遊星ギア群4およびサンギア5aからなる遊
星ギア機構Pと、出力部材1のキャリア10に対する、
相対回転方向の一方向のみの回転を許容する一方向クラ
ッチ6と、プーリ2と出力部材1との間に介在して両者
を一体回転可能に連結するとともに、所定の回転数以上
で両者の連結を解除する遠心クラッチ機構8とを備えて
いる。
Referring to FIG. 1, the transmission unit A includes a cylindrical pulley 2 around which a belt D as a transmission band is wound.
An internal tooth member 3 formed integrally with the pulley 2 and having a ring gear 3a formed on the inner peripheral surface thereof;
1 has a boss portion 5b as a fixed portion fixed to 1, an outer tooth member 5 having a sun gear 5a formed on the outer peripheral surface thereof, and a double cylinder arranged on the inner peripheral side of the pulley 2. An output member 1 having a connecting portion 1d to the drive shaft B2 of the auxiliary machine B on the inner peripheral surface of the above, and a planetary gear mechanism P composed of the ring gear 3a, a planetary gear group 4 supported by the carrier 10 and a sun gear 5a. , With respect to the carrier 10 of the output member 1,
A one-way clutch 6 which allows rotation in only one direction of relative rotation, and a one-way clutch 6 interposed between the pulley 2 and the output member 1 so as to be integrally rotatable, and both are connected at a predetermined rotational speed or more. And a centrifugal clutch mechanism 8 for releasing.

【0012】プーリ2の外周面には、上記ベルトDが巻
き掛けられるW溝形状の伝動面2aが形成されている。
プーリ2のボス部2bは、玉軸受11を介して外歯部材
5のボス部5bによって回転自在に支持されている。出
力部材1は、外筒部1a、内筒部1bおよびこれらの一
端部どうしを連結する側壁部1cを有している。この出
力部材1は、半断面にて略コ字形形状を呈する。外筒部
1aの内周面は、内歯部材3の外周面と一体回転可能に
スプライン嵌合されている。上記の内歯部材3、遊星ギ
ア機構P、外歯部材5、一方向クラッチ機構6および遠
心クラッチ8は、出力部材1の外筒部1と内筒部1bと
の間に配置されており、出力部材1によって、当該ユニ
ットAのハウジングが兼用されている。
On the outer peripheral surface of the pulley 2, a W groove-shaped transmission surface 2a around which the belt D is wound is formed.
The boss portion 2b of the pulley 2 is rotatably supported by the boss portion 5b of the external tooth member 5 via a ball bearing 11. The output member 1 has an outer tubular portion 1a, an inner tubular portion 1b, and a side wall portion 1c connecting one end portions of these. The output member 1 has a substantially U-shaped cross section. The inner peripheral surface of the outer cylindrical portion 1a is spline-fitted with the outer peripheral surface of the inner tooth member 3 so as to be integrally rotatable. The internal tooth member 3, the planetary gear mechanism P, the external tooth member 5, the one-way clutch mechanism 6 and the centrifugal clutch 8 are arranged between the outer tubular portion 1 and the inner tubular portion 1b of the output member 1, The output member 1 also serves as the housing of the unit A.

【0013】図1および図3を参照して、外筒部1aの
内周面の、側壁部1c付近には、複数の(例えば6か
所)凹所からなるカム部1eが、円周等配に設けられて
いる。各カム部1e内には、当該カム部1e内のカム面
1fに対して、所要時に圧接される円柱ころ6aが収容
されている。カム面1fは、出力部材1がキャリア10
に対して所定の回転方向に回転したときのみに、ころ6
aと協働して、出力部材1とキャリア10との回転を拘
束する。一方向クラッチ機構6は、上記カム部1e、円
筒ころ6aおよびキャリア10の外周面により構成さ
れ、図3において、出力部材1に対してキャリア10が
白抜き矢符の方向に相対回転した時に、出力部材1とキ
ャリア10の回転を拘束し、両者を一体回転させる。
Referring to FIGS. 1 and 3, a cam portion 1e consisting of a plurality of (for example, 6) recesses is formed on the inner peripheral surface of the outer cylindrical portion 1a in the vicinity of the side wall portion 1c. It is provided in the distribution. Inside each cam portion 1e, a cylindrical roller 6a that is pressed against the cam surface 1f inside the cam portion 1e is housed. The output surface 1 of the cam surface 1f is the carrier 10
Only when it rotates in the specified rotation direction with respect to the roller 6
The rotation of the output member 1 and the carrier 10 is restricted in cooperation with a. The one-way clutch mechanism 6 is composed of the cam portion 1e, the cylindrical roller 6a and the outer peripheral surface of the carrier 10. When the carrier 10 rotates relative to the output member 1 in the direction of the white arrow in FIG. The output member 1 and the carrier 10 are restrained from rotating, and both are rotated integrally.

【0014】また、外筒部1aの内周面の、開口端部付
近には、全周にわたってラチェット歯1gが形成されて
いる。このラチェット歯1gは、プーリ2の回転が所定
の回転数を超えない状態で、遠心クラッチ機構8の、後
述する重錘部材83の爪部83aと係合される。図1お
よび図4を参照して、遠心クラッチ機構8は、プーリ2
に一体に形成された内歯部材3に円周等配に配置された
複数の(例えば4か所)収容凹部31と、この収容凹部
31内に軸84によって回転自在に支持された、爪部8
3a付きの重錘部材83と、出力部材1の上記ラチェッ
ト歯1gとを備えている。なお、重錘部材83を支持す
る軸84は、重錘部材83の爪部83a側に片寄った位
置に設けられており、重錘部材83の重心位置が軸84
よりも尻部83b側に位置するようにしてある。
Ratchet teeth 1g are formed on the inner peripheral surface of the outer cylindrical portion 1a in the vicinity of the open end portion over the entire circumference. This ratchet tooth 1g is engaged with a claw portion 83a of a weight member 83 of the centrifugal clutch mechanism 8 described later in a state where the rotation of the pulley 2 does not exceed a predetermined number of rotations. Referring to FIGS. 1 and 4, the centrifugal clutch mechanism 8 includes a pulley 2
A plurality of (for example, four) accommodation recesses 31 arranged at equal intervals around the inner tooth member 3 formed integrally with the claw portion, which is rotatably supported in the accommodation recess 31 by a shaft 84. 8
The weight member 83 with 3a and the ratchet teeth 1g of the output member 1 are provided. The shaft 84 that supports the weight member 83 is provided at a position offset to the claw portion 83a side of the weight member 83, and the position of the center of gravity of the weight member 83 is the shaft 84.
It is arranged so as to be located on the side of the bottom portion 83b.

【0015】この遠心クラッチ機構8においては、プー
リ2の回転が所定の回転数を超えない状態では、図4に
実線で示すように、重錘部材83の爪部83aがラチェ
ット歯1gに噛み合わされるとともに、重錘部材83の
尻部83bが収容凹部31内の回転方向上流側の壁面3
2に当接する。これにより、出力部材1とプーリ2とが
重錘部材83を介して一体回転可能に連結される。
In this centrifugal clutch mechanism 8, the pawl portion 83a of the weight member 83 is meshed with the ratchet tooth 1g as shown by the solid line in FIG. In addition, the bottom portion 83b of the weight member 83 has the wall surface 3 in the accommodation recess 31 on the upstream side in the rotation direction.
Abut 2. As a result, the output member 1 and the pulley 2 are integrally rotatably connected via the weight member 83.

【0016】一方、プーリ2の回転が所定の回転数以上
になると、図4の破線で示すように、重錘部材83の尻
部83bが軸84を中心として遠心方向に振られるとと
もに、爪部83aとラチェット歯1gとの係合が解除さ
れる。これにより、出力部材1とプーリ2とは、相対回
転自在となる。なお、上記の係合解除状態において、重
錘83の尻部83bが収容凹部31から飛び出して、ラ
チェット歯1gと干渉することがないように、爪部83
aが収容凹部31内の壁面32と当接されるようにして
ある。
On the other hand, when the rotation of the pulley 2 exceeds a predetermined number of rotations, as shown by the broken line in FIG. 4, the bottom portion 83b of the weight member 83 is swung in the centrifugal direction about the shaft 84, and the claw portion is formed. The engagement between 83a and the ratchet tooth 1g is released. This allows the output member 1 and the pulley 2 to rotate relative to each other. In the disengaged state described above, the claw portion 83 is provided so that the bottom portion 83b of the weight 83 does not project from the accommodation recess 31 and interfere with the ratchet teeth 1g.
The a is brought into contact with the wall surface 32 in the accommodation recess 31.

【0017】遊星ギア群4は、リングギア3aとサンギ
ア5aとに、互いに噛み合わされて回転する遊星ギア4
aにより構成されている。次に、この変速ユニットAの
動作について説明する。エンジン側の回転数が低くて、
プーリ2の回転が所定の回転数を超えない場合には、遠
心クラッチ機構8の重錘部材83の遠心力が小さいの
で、重錘部材83の爪部83aと出力部材1のラチェッ
ト歯1gが噛み合わされている。したがって、プーリ2
の回転が、遠心クラッチ機構8および出力部材1を介し
て、そのまま補機Bの駆動軸B2に伝達される(図5の
d部分参照)。このとき、遊星ギア機構Pのキャリア1
0と出力部材1との間に設けた一方向クラッチ機構6は
滑っている。
The planetary gear group 4 is composed of a ring gear 3a and a sun gear 5a which rotate in mesh with each other.
It is composed of a. Next, the operation of the transmission unit A will be described. The engine speed is low,
When the rotation of the pulley 2 does not exceed a predetermined number of rotations, the centrifugal force of the weight member 83 of the centrifugal clutch mechanism 8 is small, so that the claw portion 83a of the weight member 83 and the ratchet tooth 1g of the output member 1 mesh with each other. Has been done. Therefore, the pulley 2
Is transmitted to the drive shaft B2 of the auxiliary machine B as it is through the centrifugal clutch mechanism 8 and the output member 1 (see part d of FIG. 5). At this time, the carrier 1 of the planetary gear mechanism P
The one-way clutch mechanism 6 provided between 0 and the output member 1 is slipping.

【0018】一方、プーリ2の回転が所定の回転数以上
になると、遠心クラッチ機構8が作動して、当該遠心ク
ラッチ機構8によるプーリ2と出力部材1との連結が解
除される。これにより、プーリ2の回転は、内歯部材
3、遊星ギア群4、キャリア10、一方向クラッチ6お
よび出力部材1を介して、遊星ギア機構Pの所定の変速
比をもって、補機Bの駆動軸B2に伝達されることにな
る(図5のe部分参照)。
On the other hand, when the rotation of the pulley 2 exceeds a predetermined number of rotations, the centrifugal clutch mechanism 8 operates and the connection between the pulley 2 and the output member 1 by the centrifugal clutch mechanism 8 is released. As a result, the rotation of the pulley 2 drives the auxiliary device B through the internal gear member 3, the planetary gear group 4, the carrier 10, the one-way clutch 6 and the output member 1 at a predetermined gear ratio of the planetary gear mechanism P. It will be transmitted to the axis B2 (refer to part e in FIG. 5).

【0019】この実施例によれば、筒状のプーリ2の内
周側に、変速のための遊星ギア機構Pを設けたので、全
体を小型にすることができる。このように小型であり、
しかも、各補機BのハウジングB1に取り付けるための
固定部としてのボス部5b、および各補機Bの駆動軸B
2に連結するための連結部1dを設けてユニット化して
あるので、図2に示すようにエンジンEにより駆動され
る各補機Bのそれぞれに直接取り付けて用いることが可
能となる。
According to this embodiment, since the planetary gear mechanism P for shifting the gear is provided on the inner peripheral side of the cylindrical pulley 2, the entire size can be reduced. So small,
Moreover, the boss portion 5b as a fixing portion for attaching to the housing B1 of each accessory B, and the drive shaft B of each accessory B
Since a connecting portion 1d for connecting to 2 is provided and unitized, it becomes possible to directly attach and use each auxiliary machine B driven by the engine E as shown in FIG.

【0020】このように各補機Bに取り付けられた各変
速ユニットAは、それが取り付けられた補機Bを駆動す
るのに必要な駆動力のみを分担すれば良いことになる。
したがって、変速ユニットAの負荷容量としては、従来
のようにエンジン側に設けられた一つの変速装置で多く
の補機への駆動力を供給する場合の、当該変速装置の負
荷容量と比較して、大幅に低減することができ、これに
より、変速ユニットAの一層の小型化を図ることができ
る。
As described above, each transmission unit A attached to each accessory B need only share the driving force necessary to drive the accessory B to which it is attached.
Therefore, as the load capacity of the transmission unit A, as compared with the load capacity of the transmission apparatus in the case where one transmission apparatus provided on the engine side supplies driving force to many auxiliary machines as in the conventional case. It is possible to drastically reduce the size of the transmission unit A, thereby further reducing the size of the transmission unit A.

【0021】また、変速の切り換えを、ラチェット機構
を用いた遠心クラッチ機構8により機械的に行うので、
バッテリからの入力等を必要とせず、したがって、電磁
クラッチを用いた場合のようなバッテリ消費がない。ま
た、応答性にも優れている。さらに、出力部材1を構成
する二重筒内に、遊星ギア機構Pその他の機構を収容す
ることにより、当該出力部材によって、変速ユニットA
のハウジングを兼ねさせることができる。したがって、
別途にハウジングを設ける必要がなく、製造コストを安
くすることができる。この場合、出力部材1を板金形成
すれば、製造コストを一層安くすることができる。
Further, since the gear change is mechanically performed by the centrifugal clutch mechanism 8 using the ratchet mechanism,
There is no need for input from a battery, and therefore there is no battery consumption as in the case of using an electromagnetic clutch. It also has excellent responsiveness. Furthermore, by accommodating the planetary gear mechanism P and other mechanisms in the double cylinder that constitutes the output member 1, the transmission unit A
It can also serve as a housing. Therefore,
Since it is not necessary to separately provide a housing, the manufacturing cost can be reduced. In this case, if the output member 1 is formed of sheet metal, the manufacturing cost can be further reduced.

【0022】なお、この発明は上記実施例に限定される
ものではなく、この発明の要旨を変更しない範囲で種々
の設計変更を施すことができる。
The present invention is not limited to the above embodiment, and various design changes can be made without changing the gist of the present invention.

【0023】[0023]

【発明の効果】以上のように本発明のエンジン補機駆動
用変速ユニットによれば、筒状のプーリの内周側に遊星
ギア機構を設けてあるので、全体を小型にすることがで
きる。しかも補機のハウジングおよび駆動軸に取り付け
できるようにユニット化してあるので、上記の小型化と
相まって、各補機のそれぞれに直接取り付けて用いるこ
とが可能となる。このように各補機に取り付けられたユ
ニットは、それが取り付けられた補機を駆動するのに必
要な駆動力のみを分担すれば良いことになる。したがっ
て、ユニットに負荷容量としては、従来のようにエンジ
ン側に設けられた一つの変速装置で多くの補機への駆動
力を供給する場合の、当該変速装置の負荷容量と比較し
て、大幅に低減することができ、これにより、ユニット
の一層の小型化を図ることができる。また、出力部材に
よって当該ユニットのハウジングを兼用することが可能
となり、別途にハウジングを設ける場合と比較して製造
コストを安くすることができる。
As described above, according to the engine accessory drive speed change unit of the present invention, since the planetary gear mechanism is provided on the inner peripheral side of the cylindrical pulley, the overall size can be reduced. Moreover, since it is unitized so that it can be attached to the housing and drive shaft of the auxiliary machine, it becomes possible to directly attach and use the auxiliary machine together with the above-mentioned miniaturization. In this way, the unit attached to each auxiliary machine only needs to share the driving force required to drive the auxiliary machine to which it is attached. Therefore, the load capacity of the unit is significantly larger than the load capacity of the transmission in the case where one transmission provided on the engine side supplies the driving force to many accessories as in the conventional case. Therefore, it is possible to further reduce the size of the unit. Further, the output member can also serve as the housing of the unit, and the manufacturing cost can be reduced as compared with the case where the housing is separately provided.

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

【図1】本発明の一実施例に係るエンジン補機駆動用変
速ユニットの要部の縦断面図である。
FIG. 1 is a vertical cross-sectional view of a main part of an engine accessory drive speed change unit according to an embodiment of the present invention.

【図2】エンジンから各補機への駆動伝達経路を示す概
略系統図である。
FIG. 2 is a schematic system diagram showing a drive transmission path from an engine to each auxiliary device.

【図3】軸方向から見た一方向クラッチ機構の概略断面
図である。
FIG. 3 is a schematic cross-sectional view of the one-way clutch mechanism as seen from the axial direction.

【図4】軸方向から見た遠心クラッチ機構の概略断面図
である。
FIG. 4 is a schematic cross-sectional view of the centrifugal clutch mechanism as seen from the axial direction.

【図5】プーリの回転数と補機の駆動軸の回転数との関
係を示す図である。
FIG. 5 is a diagram showing a relationship between a rotation speed of a pulley and a rotation speed of a drive shaft of an auxiliary machine.

【符号の説明】[Explanation of symbols]

1 出力部材 1a 外筒部 1b 内筒部 1c 側壁部 1d 連結部 2 プーリ 2a 伝動面 3 内歯部材 3a リングギア 4 遊星ギア群 5 外歯部材 5a サンギア 5b ボス部(固定部) 10 キャリア 6 一方向クラッチ機構 8 遠心クラッチ機構 B 補機 B1 ハウジング B2 駆動軸 D ベルト(伝動帯) DESCRIPTION OF SYMBOLS 1 Output member 1a Outer cylinder part 1b Inner cylinder part 1c Side wall part 1d Connection part 2 Pulley 2a Transmission surface 3 Internal tooth member 3a Ring gear 4 Planetary gear group 5 External tooth member 5a Sun gear 5b Boss part (fixed part) 10 Carrier 6 1 Directional clutch mechanism 8 Centrifugal clutch mechanism B Auxiliary machine B1 Housing B2 Drive shaft D Belt (transmission belt)

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims]【請求項1】筒状をしており、その外周面に伝動帯が巻
き掛けられる伝動面を形成した入力用プーリと、 このプーリの内周側に配置され、外筒部、内筒部および
これらの一端部どうしを連結する側壁部を有する二重筒
に形成されるとともに、内筒部の内周面に、補機の駆動
軸への連結部を有する出力部材と、 プーリと出力部材との間に介在して両者を一体回転可能
に連結するとともに、所定の回転数以上で両者の連結を
解除する遠心クラッチ機構と、 プーリと一体回転可能に設けられ、内周面にリングギア
を形成した筒状の内歯部材と、 内歯部材と同軸に配置され、補機のハウジングに固定さ
れる固定部を有するとともに外周面にサンギアを形成し
た外歯部材と、 外歯部材のサンギア、これに噛み合わされ且つキャリア
によって回転自在に支持された遊星ギア群、および内歯
部材のリングギアを含む遊星ギア機構と、 キャリアと出力部材との間に介在した一方向クラッチ機
構とを備え、 上記遠心クラッチ機構、内歯部材、遊星ギア機構、外歯
部材および一方向クラッチ機構は、出力部材の外筒部と
内筒部との間に収容されていることを特徴とするエンジ
ン補機駆動用変速ユニット。
1. An input pulley having a cylindrical shape and having a power transmission surface around which a power transmission band is wound, and an outer cylindrical portion, an inner cylindrical portion, and an inner cylindrical portion arranged on the inner peripheral side of the pulley. An output member that is formed into a double cylinder that has a side wall portion that connects these one end portions to each other, and that has an inner peripheral surface of the inner cylinder portion that has a connection portion to the drive shaft of the auxiliary machine, and the pulley and the output member. A centrifugal clutch mechanism that interlocks the two so that they can rotate integrally with each other, and that disconnects the two at a predetermined speed or more, and a pulley that can rotate integrally with the pulley, and forms a ring gear on the inner peripheral surface. A cylindrical inner toothed member, an outer toothed member having a fixed portion fixed coaxially to the inner toothed member and fixed to the housing of the auxiliary machine, and having a sun gear formed on the outer peripheral surface, and a sun gear of the outer toothed member, It is engaged with and can be freely rotated by the carrier A planetary gear mechanism including a supported planetary gear group and a ring gear of an internal gear member, and a one-way clutch mechanism interposed between a carrier and an output member, wherein the centrifugal clutch mechanism, the internal gear member, and the planetary gear The engine accessory drive speed change unit, wherein the mechanism, the external tooth member, and the one-way clutch mechanism are housed between the outer tubular portion and the inner tubular portion of the output member.
JP4205615A1992-07-311992-07-31Gear shift unit for driving engine auxiliary machinePendingJPH0650169A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP4205615AJPH0650169A (en)1992-07-311992-07-31Gear shift unit for driving engine auxiliary machine

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP4205615AJPH0650169A (en)1992-07-311992-07-31Gear shift unit for driving engine auxiliary machine

Publications (1)

Publication NumberPublication Date
JPH0650169Atrue JPH0650169A (en)1994-02-22

Family

ID=16509815

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP4205615APendingJPH0650169A (en)1992-07-311992-07-31Gear shift unit for driving engine auxiliary machine

Country Status (1)

CountryLink
JP (1)JPH0650169A (en)

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