JP2001041308A - Power transmission device - Google Patents
Power transmission deviceInfo
- Publication number
- JP2001041308A JP2001041308A JP11213407A JP21340799A JP2001041308A JP 2001041308 A JP2001041308 A JP 2001041308A JP 11213407 A JP11213407 A JP 11213407A JP 21340799 A JP21340799 A JP 21340799A JP 2001041308 A JP2001041308 A JP 2001041308A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- power transmission
- transmission device
- shaft
- torque
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、回転装置の回転軸
にトルクを伝達する動力伝達装置であり、特に過負荷ト
ルクの伝達を遮断するための構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission device for transmitting torque to a rotating shaft of a rotating device, and more particularly to a structure for interrupting transmission of overload torque.
【０００２】[0002]
【従来の技術】従来技術として、例えば特開平１０−４
７２４４号公報に開示された動力伝達装置が公知であ
る。この動力伝達装置は、例えば冷凍サイクルの圧縮機
に具備されて、エンジンの回転動力を圧縮機のシャフト
に伝達するものであるが、エンジンから回転動力が伝達
されるプーリと圧縮機のシャフトに嵌合するハブとの間
にクラッチ機構を持たないため、シャフトがロックした
時にトルク伝達を遮断できるトルクリミッタを設けてい
る。2. Description of the Related Art As a prior art, for example, Japanese Patent Application Laid-Open No. H10-4
A power transmission device disclosed in Japanese Patent No. 7244 is known. This power transmission device is provided in, for example, a compressor of a refrigeration cycle and transmits the rotational power of the engine to a shaft of the compressor. The power transmission device is fitted to a pulley to which the rotational power is transmitted from the engine and a shaft of the compressor. Since there is no clutch mechanism between the hub and the mating hub, a torque limiter capable of interrupting torque transmission when the shaft is locked is provided.
【０００３】このトルクリミッタは、熱可塑性樹脂から
成る弾性変形部を備えた介装部材を有し、その介装部材
がプーリとハブの何れか一方に結合され、他方に対して
常に一体回転可能に圧接されている。この構成により、
シャフト側の負荷トルクが変動した時は、弾性変形部が
弾性変形してトルク変動を吸収し、更に負荷トルクが過
大となった時（シャフトがロックした時等）は、圧接部
の相対摺動に伴う摩擦熱によって弾性変形部が溶融する
ことにより、シャフトからプーリへの過負荷トルクの伝
達が遮断される。This torque limiter has an interposed member provided with an elastically deformable portion made of a thermoplastic resin, and the interposed member is connected to one of a pulley and a hub, and is always rotatable integrally with the other. Is pressed against. With this configuration,
When the load torque on the shaft side fluctuates, the elastic deformation part elastically deforms to absorb the torque fluctuation, and when the load torque becomes excessive (when the shaft is locked, etc.), the relative sliding of the pressure contact part As a result, the elastically deformed portion is melted by frictional heat, so that transmission of overload torque from the shaft to the pulley is interrupted.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記の構成
では、部品点数が増大し、且つプーリを支持するベアリ
ングの前方に介装部材を配置するためのスペースを必要
とするため、動力伝達装置を具備した圧縮機全体の体格
が大きくなるという課題を有している。本発明は、上記
事情に基づいて成されたもので、その目的は、部品点数
を低減でき、且つ回転装置の体格を小型化できる動力伝
達装置を提供することにある。However, in the above configuration, the number of parts is increased, and a space for disposing the interposition member in front of the bearing supporting the pulley is required. There is a problem that the physique of the entire compressor provided becomes large. The present invention has been made based on the above circumstances, and an object of the present invention is to provide a power transmission device capable of reducing the number of parts and reducing the size of the rotating device.
【０００５】[0005]
【課題を解決するための手段】（請求項１の手段）ハブ
は、回転軸に結合される第１のハブと、この第１のハブ
に結合されて、外部の駆動源より伝達されたトルクを第
１のハブに伝達する第２のハブとを有し、第１のハブと
第２のハブとの少なくとも一方側が樹脂または焼結金属
で構成されている。これにより、樹脂または焼結金属で
構成された一方側のハブは、回転装置側の異常により過
負荷となった時に、他方側のハブとの結合部が破壊され
ることにより、回転軸へのトルク伝達を遮断することが
できる。A hub is connected to a first hub connected to a rotary shaft and a torque transmitted from an external drive source is connected to the first hub. To the first hub, and at least one of the first hub and the second hub is made of resin or sintered metal. As a result, when the hub on one side made of resin or sintered metal is overloaded due to an abnormality on the rotating device side, the joint with the hub on the other side is broken, so that the hub to the rotating shaft is broken. Torque transmission can be cut off.
【０００６】（請求項２の手段）請求項１に記載した第
１のハブと第２のハブは、両者の結合部が噛み合うこと
で互いに回転規制されている。(Means of Claim 2) The first hub and the second hub described in claim 1 are restricted from rotating with each other by the engagement of the connecting portions of both.
【０００７】（請求項３の手段）請求項２に記載した動
力伝達装置において、第１のハブと第２のハブは、略軸
方向に対向する互いの対向面に結合部が設けられ、略軸
方向に結合されている。According to a third aspect of the present invention, in the power transmission device according to the second aspect, the first hub and the second hub are provided with connecting portions on opposing surfaces that oppose each other substantially in the axial direction. Are connected in the axial direction.
【０００８】（請求項４の手段）請求項１に記載した第
１のハブと第２のハブは、一方のハブが金属で構成さ
れ、他方のハブが樹脂で構成され、且つ一方のハブの一
部が他方のハブにインサート成形されている。According to a fourth aspect of the present invention, in the first hub and the second hub according to the first aspect, one of the hubs is made of metal, the other hub is made of resin, and the other hub is made of resin. A portion is insert molded on the other hub.
【０００９】（請求項５の手段）外部の駆動源より伝達
されたトルクを受けて回転し、且つ回転装置の回転軸に
結合されたハブを有し、このハブを介して回転軸にトル
ク伝達を行う動力伝達装置であって、ハブは、樹脂また
は焼結金属で構成されている。この樹脂または焼結金属
で構成されたハブは、回転装置側の異常により過負荷と
なった時に、回転軸との結合部が破壊されることによ
り、回転軸へのトルク伝達を遮断することができる。(Means for Claim 5) A hub which rotates by receiving torque transmitted from an external drive source, and which is coupled to a rotating shaft of a rotating device, transmits torque to the rotating shaft via the hub. Wherein the hub is made of resin or sintered metal. The hub made of this resin or sintered metal can cut off the torque transmission to the rotating shaft by breaking the joint with the rotating shaft when overloaded due to abnormality on the rotating device side. it can.
【００１０】（請求項６の手段）請求項５に記載したハ
ブは、回転軸の外周にスプライン嵌合して回転規制され
ている。(Means of Claim 6) The hub described in Claim 5 is spline-fitted to the outer periphery of the rotating shaft and rotation is regulated.
【００１１】（請求項７の手段）請求項５に記載した樹
脂製のハブは、回転軸の外周にテーパ嵌合して回転規制
されている。この構成では、回転軸側の負荷トルクが増
大した時に、ハブと回転軸との嵌合面で滑りが発生し、
ハブのテーパ嵌合面が摩耗することにより、ハブと回転
軸との結合状態が解除されるため、ハブと回転軸との間
でトルク伝達が遮断される。(Seventh Aspect) The resin hub according to the fifth aspect is taperedly fitted on the outer periphery of the rotating shaft to regulate the rotation. With this configuration, when the load torque on the rotating shaft side increases, slippage occurs on the fitting surface between the hub and the rotating shaft,
As the tapered fitting surface of the hub is worn, the connection between the hub and the rotating shaft is released, so that torque transmission between the hub and the rotating shaft is interrupted.
【００１２】（請求項８の手段）請求項７に記載した動
力伝達装置では、回転軸側の負荷トルクが所定値以上に
増大した時に、回転軸とハブとが相対回転し、樹脂で構
成されたハブ側の嵌合面が摩耗することにより、両者間
のトルク伝達が遮断される。In the power transmission device according to the present invention, when the load torque on the rotating shaft side increases to a predetermined value or more, the rotating shaft and the hub rotate relative to each other and are made of resin. When the hub-side fitting surface is worn, the transmission of torque between the two is interrupted.
【００１３】（請求項９の手段）請求項１及び５に記載
した樹脂または焼結金属は、疲労強度に対し破壊強度が
４倍以下である。この場合、鉄等の金属材料と比較し
て、疲労強度と破壊強度との差が小さいため、所要の耐
久性を維持でき、且つ回転軸がロックした時に加わる衝
撃力に対して比較的容易に結合部が破壊されることか
ら、トルクリミッタとして効果的に機能する。(Means of Claim 9) The resin or sintered metal according to claims 1 and 5 has a fracture strength not more than four times the fatigue strength. In this case, since the difference between the fatigue strength and the fracture strength is smaller than that of a metal material such as iron, the required durability can be maintained, and the impact force applied when the rotating shaft is locked can be relatively easily formed. Since the joint is broken, the joint effectively functions as a torque limiter.
【００１４】[0014]
【発明の実施の形態】次に、本発明の実施例を図面に基
づいて説明する。 （第１実施例）図１は動力伝達装置１の断面図である。
動力伝達装置１は、車両エンジンの回転動力を圧縮機の
シャフト２に伝達するもので、図１に示すように、エン
ジンの回転動力が伝達されて回転するプーリ３、このプ
ーリ３にゴム体４を介して連結された外ハブ５、この外
ハブ５と結合され、且つ圧縮機のシャフト２に結合され
る内ハブ６等より構成される。Next, an embodiment of the present invention will be described with reference to the drawings. (First Embodiment) FIG. 1 is a sectional view of a power transmission device 1.
A power transmission device 1 transmits the rotational power of a vehicle engine to a shaft 2 of a compressor. As shown in FIG. 1, a pulley 3 that rotates by transmitting the rotational power of the engine, and a rubber body 4 And an inner hub 6 coupled to the outer hub 5 and coupled to the shaft 2 of the compressor.
【００１５】プーリ３は、金属製（例えば鉄鋼）で、ベ
アリング７を介して圧縮機のハウジング８に回転自在に
支持され、図示しないベルトを介して常時エンジンの回
転動力が伝達されて回転している。プーリ３と外ハブ５
との間に介在されるゴム体４は、シャフト２側のトルク
変動を吸収するダンパ機能を有するもので、円周方向に
複数箇所設けられている。外ハブ５は、金属製（例えば
鉄鋼）で、中央部に丸孔５ａ（図２参照）を有する円環
形状に設けられ、ゴム体４を介してプーリ３と一体に回
転する。この外ハブ５は、図１に示すように、径方向の
内周側と外周側との間に段差部を有し、内周側の方が外
周側より圧縮機の本体側（図１の右側）へずれて設けら
れている。また、内周側の表面には、図２に示すよう
に、丸孔５ａの周囲にスリット状の凹部５ｂが放射状に
形成されている。The pulley 3 is made of metal (for example, iron or steel) and is rotatably supported by a housing 8 of the compressor via a bearing 7. The rotational power of the engine is constantly transmitted through a belt (not shown) to rotate. I have. Pulley 3 and outer hub 5
The rubber member 4 interposed between the shaft member 2 and the rubber member 4 has a damper function of absorbing a torque fluctuation on the shaft 2 side, and is provided at a plurality of locations in the circumferential direction. The outer hub 5 is made of metal (for example, steel), provided in an annular shape having a round hole 5 a (see FIG. 2) in the center, and rotates integrally with the pulley 3 via the rubber body 4. As shown in FIG. 1, the outer hub 5 has a stepped portion between the inner peripheral side and the outer peripheral side in the radial direction, and the inner peripheral side is closer to the main body side of the compressor than the outer peripheral side (see FIG. 1). (Right side). As shown in FIG. 2, a slit-shaped recess 5b is formed radially around the round hole 5a on the inner peripheral surface.
【００１６】内ハブ６は、シャフト２の外周にスプライ
ン嵌合してシャフト２に回転規制され、ボルト９によっ
て固定されている。この内ハブ６は、外ハブ５の内周側
と軸方向に対向するフランジ部６ａを有し、そのフラン
ジ部６ａの裏面（外ハブ５の内周側と対向する面）に、
外ハブ５の凹部５ｂに対応するリブ状の凸部６ｂが放射
状に設けられている（図２参照）。この内ハブ６と外ハ
ブ５は、図１に示すように、外ハブ５の凹部５ｂに内ハ
ブ６の凸部６ｂを嵌合させて結合され、外ハブ５と内ハ
ブ６とが一体となって回転することができる。なお、内
ハブ６を構成する材料は、疲労強度に対し破壊強度が４
倍以下となる樹脂（または焼結金属）を採用している。
但し、内ハブ６は、通常の作動時に圧縮機の駆動トルク
（常時変動する）による繰り返し応力が凸部６ｂに加わ
るため、その最大応力が内ハブ６を構成する樹脂の耐久
限度以下となるように設計されている。The inner hub 6 is spline-fitted to the outer periphery of the shaft 2, is restricted from rotating by the shaft 2, and is fixed by bolts 9. The inner hub 6 has a flange portion 6a axially facing the inner peripheral side of the outer hub 5 and a back surface of the flange portion 6a (a surface facing the inner peripheral side of the outer hub 5).
A rib-shaped protrusion 6b corresponding to the recess 5b of the outer hub 5 is provided radially (see FIG. 2). As shown in FIG. 1, the inner hub 6 and the outer hub 5 are joined by fitting the protrusion 6b of the inner hub 6 into the recess 5b of the outer hub 5, and the outer hub 5 and the inner hub 6 are integrally formed. Can be turned. The material constituting the inner hub 6 has a fracture strength of 4 to the fatigue strength.
Resin (or sintered metal) that is twice or less is adopted.
However, in the inner hub 6, a repetitive stress due to the driving torque (always fluctuating) of the compressor is applied to the convex portion 6b during normal operation, so that the maximum stress is less than the durability limit of the resin constituting the inner hub 6. Designed for
【００１７】次に、本実施例の作動を説明する。車両エ
ンジンからベルトを介してプーリ３に伝達された回転動
力は、ゴム体４とともにプーリ３と一体に回転する外ハ
ブ５から内ハブ６に伝達され、更に内ハブ６が固定され
た圧縮機のシャフト２に伝達されてシャフト２が回転す
る。ここで、例えばシャフト２がロックしてシャフト２
側の負荷トルクが急激に増大すると、内ハブ６に設けら
れた凸部６ｂの根元部分に応力が集中する。この応力が
樹脂で構成された内ハブ６の耐久限度を越えると、凸部
６ｂが破壊されて内ハブ６の本体と切り離されることに
より、内ハブ６と外ハブ５との結合状態が解除される。
その結果、内ハブ６と外ハブ５との間でトルク伝達が遮
断されるため、シャフト２側の過大なトルク変動が車両
エンジンに伝達されることを防止できる。Next, the operation of this embodiment will be described. The rotational power transmitted from the vehicle engine to the pulley 3 via the belt is transmitted to the inner hub 6 from the outer hub 5 that rotates integrally with the pulley 3 together with the rubber body 4, and further the compressor of the compressor to which the inner hub 6 is fixed. The power is transmitted to the shaft 2 and the shaft 2 rotates. Here, for example, the shaft 2 locks and the shaft 2
When the load torque on the side suddenly increases, stress concentrates on the root portion of the convex portion 6b provided on the inner hub 6. When this stress exceeds the durability limit of the inner hub 6 made of resin, the protruding portion 6b is broken and separated from the main body of the inner hub 6, whereby the connection state between the inner hub 6 and the outer hub 5 is released. You.
As a result, torque transmission between the inner hub 6 and the outer hub 5 is interrupted, so that excessive torque fluctuation on the shaft 2 side can be prevented from being transmitted to the vehicle engine.
【００１８】（第１実施例の効果）本実施例の動力伝達
装置１は、外ハブ５に設けた凹部５ｂに内ハブ６に設け
た凸部６ｂを嵌合させて両者を結合し、シャフト２側の
負荷トルクが増大した時は、樹脂で構成された内ハブ６
の凸部６ｂが破壊されることでトルク伝達を遮断するこ
とができる。この場合、トルクリミッタとしての機能を
外ハブ５と内ハブ６だけで構成でき、新たに別部品を追
加する必要がないので、部品点数が増加することなく、
構造を簡単にでき、且つ動力伝達装置１を具備した圧縮
機全体の体格を小型化できる。(Effects of the First Embodiment) In the power transmission device 1 of the present embodiment, the convex portion 6b provided on the inner hub 6 is fitted into the concave portion 5b provided on the outer hub 5, and the two are connected to each other. When the load torque on the second side increases, the inner hub 6 made of resin is used.
The torque transmission can be cut off by breaking the convex portion 6b of. In this case, the function as a torque limiter can be constituted only by the outer hub 5 and the inner hub 6, and there is no need to add another component, so that the number of components does not increase,
The structure can be simplified, and the overall size of the compressor including the power transmission device 1 can be reduced.
【００１９】（第２実施例）図３は動力伝達装置１の断
面図である。本実施例の動力伝達装置１は、第１実施例
の外ハブ５と内ハブ６とを一体に構成したハブ１０を具
備し、このハブ１０全体を樹脂または焼結金属で構成し
た一例である。この構成では、シャフト２がロックした
時に、シャフト２の外周にスプライン嵌合するハブ１０
のスプライン部１０ａに応力が集中して、そのスプライ
ン部１０ａが破壊されることにより、シャフト２とハブ
１０との結合状態が解除されて、両者間のトルク伝達が
遮断される。(Second Embodiment) FIG. 3 is a sectional view of the power transmission device 1. The power transmission device 1 of the present embodiment is an example in which the hub 10 in which the outer hub 5 and the inner hub 6 of the first embodiment are integrally formed is provided, and the entire hub 10 is formed of resin or sintered metal. . In this configuration, when the shaft 2 is locked, the hub 10 that is spline-fitted to the outer periphery of the shaft 2
The stress is concentrated on the spline portion 10a, and the spline portion 10a is broken, whereby the coupling state between the shaft 2 and the hub 10 is released, and the torque transmission between the two is interrupted.
【００２０】なお、ハブ１０のスプライン部１０ａは、
シャフト２がロックした時に確実に破壊される必要があ
る。そこで、スプライン部１０ａの破壊を容易にするた
めに、図４（ａ）に示す通常のスプライン部１０ａに対
し、例えば図４（ｂ）、（ｃ）に示すように、スプライ
ン部１０ａの歯丈を長くして、歯元の応力集中を高める
ように構成しても良い。あるいは図４（ｄ）に示すよう
に、スプライン部１０ａの内側に欠肉部１０ｂを設ける
ことで、歯元の応力集中を高めるように構成しても良
い。The spline portion 10a of the hub 10 is
When the shaft 2 locks, it must be reliably destroyed. Therefore, in order to facilitate the destruction of the spline portion 10a, the tooth height of the spline portion 10a is different from that of the normal spline portion 10a shown in FIG. 4A, for example, as shown in FIGS. 4B and 4C. May be lengthened to increase the stress concentration at the tooth root. Alternatively, as shown in FIG. 4D, a configuration may be adopted in which a notched portion 10 b is provided inside the spline portion 10 a to increase the stress concentration at the tooth root.
【００２１】（第３実施例）図５は動力伝達装置１の断
面図である。本実施例の動力伝達装置１は、第１実施例
と同様に、外ハブ５と内ハブ６とを有する構成である
が、その外ハブ５と内ハブ６との結合状態が第１実施例
とは異なる。外ハブ５は、樹脂製であり、その外周部で
ゴム体４を介してプーリ３に連結されている。内ハブ６
は、金属製（例えば鉄鋼）であり、外ハブ５の内周部に
インサート成形され、シャフト２の外周にスプライン嵌
合して結合される。(Third Embodiment) FIG. 5 is a sectional view of the power transmission device 1. The power transmission device 1 of the present embodiment has an outer hub 5 and an inner hub 6 as in the first embodiment, but the connection state between the outer hub 5 and the inner hub 6 is the same as that of the first embodiment. And different. The outer hub 5 is made of resin, and is connected to the pulley 3 via a rubber body 4 at an outer peripheral portion thereof. Inner hub 6
Is made of metal (for example, steel), is insert-molded in the inner peripheral portion of the outer hub 5, and is spline-fitted and coupled to the outer peripheral surface of the shaft 2.
【００２２】但し、外ハブ５の内周部と内ハブ６の外周
部には、両者を結合する結合部Ａ（図６参照）が設けら
れて、互いに回転規制されている。なお、図６（ａ）に
示す結合部Ａは、外ハブ５の内周部と内ハブ６の外周部
に各々設けられたスプライン部を噛み合わせて構成さ
れ、図６（ｂ）に示す結合部Ａは、波形の凹凸部を噛み
合わせて構成され、図６（ｃ）に示す結合部Ａは、内ハ
ブ６の外周面に設けた偏心溝６ｃに外ハブ５の樹脂が入
り込んで構成されている。本実施例の構成では、シャフ
ト２がロックした時に、樹脂で構成された外ハブ５の結
合部に応力が集中して破壊されることにより、外ハブ５
と内ハブ６との結合状態が解除されて、両者間のトルク
伝達が遮断される。However, on the inner peripheral portion of the outer hub 5 and the outer peripheral portion of the inner hub 6, a connecting portion A (see FIG. 6) for connecting the both is provided, and their rotations are restricted. The coupling portion A shown in FIG. 6A is configured by engaging an inner peripheral portion of the outer hub 5 with a spline portion provided on the outer peripheral portion of the inner hub 6, and the coupling portion shown in FIG. The portion A is formed by engaging the corrugated uneven portion, and the coupling portion A shown in FIG. 6C is formed by the resin of the outer hub 5 entering an eccentric groove 6 c provided on the outer peripheral surface of the inner hub 6. ing. In the configuration of the present embodiment, when the shaft 2 is locked, stress concentrates on the joint portion of the outer hub 5 made of resin and is broken.
And the inner hub 6 is disconnected, and the transmission of torque therebetween is interrupted.
【００２３】（第４実施例）図７は動力伝達装置１の断
面図である。本実施例の動力伝達装置１は、第３実施例
と同様に、樹脂製の外ハブ５と金属製の内ハブ６とを有
する構成であるが、その外ハブ５と内ハブ６との結合状
態が第３実施例とは異なる。外ハブ５と内ハブ６は、そ
れぞれ別々に成形され（インサート成形ではない）、両
者の結合部Ａで結合されて互いに回転規制されている。
なお、結合部Ａは、例えば第３実施例で説明した構成
（図６参照）で、且つ軸方向にテーパ形状（図７参照）
を有している。(Fourth Embodiment) FIG. 7 is a sectional view of the power transmission device 1. As in the third embodiment, the power transmission device 1 of this embodiment has an outer hub 5 made of resin and an inner hub 6 made of metal. The state is different from the third embodiment. The outer hub 5 and the inner hub 6 are separately formed (not insert-molded), are connected at a connecting portion A of both, and are restricted from rotating.
The coupling portion A has, for example, the configuration described in the third embodiment (see FIG. 6), and has a tapered shape in the axial direction (see FIG. 7).
have.
【００２４】本実施例の構成では、シャフト２がロック
した時に、樹脂で構成された外ハブ５の結合部に応力が
集中して破壊されることにより、外ハブ５と内ハブ６と
の結合状態が解除されて、両者間のトルク伝達が遮断さ
れる。また、外ハブ５と内ハブ６との結合部Ａを軸方向
にテーパ形状とすることにより、外ハブ５と内ハブ６と
を組み付けた際のがたつきを防止できるメリットがあ
る。In the structure of the present embodiment, when the shaft 2 is locked, stress is concentrated on the joint portion of the outer hub 5 made of resin and is broken, thereby connecting the outer hub 5 and the inner hub 6. The state is released, and torque transmission between the two is interrupted. In addition, by forming the connecting portion A between the outer hub 5 and the inner hub 6 to be tapered in the axial direction, there is an advantage that rattling when the outer hub 5 and the inner hub 6 are assembled can be prevented.
【００２５】（第５実施例）図８は動力伝達装置１の断
面図である。本実施例の動力伝達装置１は、第２実施例
と同様に、外ハブ５と内ハブ６とを一体に構成したハブ
１０を有しているが、ハブ１０とシャフト２との結合状
態が第２実施例とは異なる。本実施例のハブ１０とシャ
フト２は、図８に示すように、両者のテーパ嵌合によっ
て結合され、且つハブ１０は樹脂で構成されている。こ
の場合、シャフト２がロックすると、シャフト２のテー
パ面に対してハブ１０のテーパ嵌合面が滑るため、摩擦
熱が発生してハブ１０のテーパ嵌合面が摩耗することに
より、シャフト２とハブ１０との結合状態が解除され
て、両者間のトルク伝達が遮断される。(Fifth Embodiment) FIG. 8 is a sectional view of the power transmission device 1. The power transmission device 1 of the present embodiment has a hub 10 in which the outer hub 5 and the inner hub 6 are integrally formed as in the second embodiment, but the coupling state of the hub 10 and the shaft 2 is different. This is different from the second embodiment. As shown in FIG. 8, the hub 10 and the shaft 2 according to the present embodiment are connected by taper fitting between them, and the hub 10 is made of resin. In this case, when the shaft 2 is locked, the taper fitting surface of the hub 10 slides with respect to the taper surface of the shaft 2, so that frictional heat is generated and the taper fitting surface of the hub 10 is worn, so that the shaft 2 is The connection state with the hub 10 is released, and the transmission of torque between the two is interrupted.
【００２６】（第６実施例）図９〜図１１はそれぞれ動
力伝達装置１の断面図である。本実施例の動力伝達装置
１は、プーリ３を樹脂化することでゴム体４（図１参
照）によるダンパ機能を廃止したもので、その代表的な
実施例を図９〜図１１に示す。プーリ３を樹脂化する
と、金属製（例えば鉄鋼）のプーリ３と比較してプーリ
３の慣性モーメントが小さくなるため、ゴム体４による
ダンパ機能を設けなくても、圧縮機のトルク変動を小さ
く抑えることが可能である。(Sixth Embodiment) FIGS. 9 to 11 are sectional views of the power transmission device 1. In the power transmission device 1 of the present embodiment, the pulley 3 is made of resin to eliminate the damper function of the rubber body 4 (see FIG. 1), and a representative embodiment thereof is shown in FIGS. When the pulley 3 is made of resin, the moment of inertia of the pulley 3 becomes smaller than that of the metal (for example, steel) pulley 3. Therefore, even if the damper function of the rubber body 4 is not provided, the torque fluctuation of the compressor is reduced. It is possible.
【００２７】図９に示す構成は、例えば第２実施例に示
したハブ１０とプーリ３とを一体化したもので、シャフ
ト２がロックした時は、第２実施例と同様にハブ１０の
スプライン部１０ａが破壊されることで、シャフト２と
ハブ１０との結合状態が解除されて、両者間のトルク伝
達が遮断される。図１０に示す構成は、例えば第３実施
例に示した外ハブ５とプーリ３とを一体化したもので、
シャフト２がロックした時は、第３実施例と同様に外ハ
ブ５の結合部が破壊されることで、外ハブ５と内ハブ６
との結合状態が解除されて、両者間のトルク伝達が遮断
される（この場合、第４実施例の構成にも適用でき
る）。図１１に示す構成は、例えば第５実施例に示した
ハブ１０とプーリ３とを一体化したもので、シャフト２
がロックした時は、第５実施例と同様にハブ１０のテー
パ嵌合面が摩耗することにより、シャフト２とハブ１０
との結合状態が解除されて、両者間のトルク伝達が遮断
される。The configuration shown in FIG. 9 is an example in which the hub 10 and the pulley 3 shown in the second embodiment are integrated, and when the shaft 2 is locked, the spline of the hub 10 is similar to the second embodiment. When the portion 10a is broken, the connection state between the shaft 2 and the hub 10 is released, and torque transmission between the two is interrupted. The configuration shown in FIG. 10 is one in which the outer hub 5 and the pulley 3 shown in the third embodiment are integrated, for example.
When the shaft 2 is locked, the joint between the outer hub 5 and the inner hub 6 is broken by breaking the joint of the outer hub 5 as in the third embodiment.
Is released, and the transmission of torque between the two is interrupted (in this case, it can also be applied to the configuration of the fourth embodiment). The configuration shown in FIG. 11 is an example in which the hub 10 and the pulley 3 shown in the fifth embodiment are integrated with each other.
Is locked, the taper fitting surface of the hub 10 is worn as in the fifth embodiment, so that the shaft 2 and the hub 10 are locked.
And the torque transmission between them is interrupted.
【図１】動力伝達装置の断面図である（第１実施例）。FIG. 1 is a sectional view of a power transmission device (first embodiment).
【図２】内ハブと外ハブとの斜視図である（第１実施
例）。FIG. 2 is a perspective view of an inner hub and an outer hub (first embodiment).
【図３】動力伝達装置の断面図である（第２実施例）。FIG. 3 is a sectional view of a power transmission device (second embodiment).
【図４】樹脂製ハブに形成されるスプライン部の断面図
である。FIG. 4 is a cross-sectional view of a spline portion formed on a resin hub.
【図５】動力伝達装置の断面図である（第３実施例）。FIG. 5 is a sectional view of a power transmission device (third embodiment).
【図６】内ハブと外ハブとの結合状態を示す断面図であ
る（第３実施例）。FIG. 6 is a sectional view showing a connection state between an inner hub and an outer hub (third embodiment).
【図７】動力伝達装置の断面図である（第４実施例）。FIG. 7 is a sectional view of a power transmission device (fourth embodiment).
【図８】動力伝達装置の断面図である（第５実施例）。FIG. 8 is a sectional view of a power transmission device (fifth embodiment).
【図９】動力伝達装置の断面図である（第６実施例）。FIG. 9 is a sectional view of a power transmission device (sixth embodiment).
【図１０】動力伝達装置の断面図である（第６実施
例）。FIG. 10 is a sectional view of a power transmission device (sixth embodiment).
【図１１】動力伝達装置の断面図である（第６実施
例）。FIG. 11 is a sectional view of a power transmission device (sixth embodiment).
１ 動力伝達装置 ２ シャフト（回転軸） ５ 外ハブ（第２のハブ） ６ 内ハブ（第１のハブ） １０ ハブ Ａ 内ハブと外ハブとの結合部 DESCRIPTION OF SYMBOLS 1 Power transmission device 2 Shaft (rotating shaft) 5 Outer hub (2nd hub) 6 Inner hub (1st hub) 10 Hub A Connection part between inner hub and outer hub.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐伯 学 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 Ｆターム(参考） 3H076 AA05 BB38 BB41 CC15 CC16 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Manabu Saeki 1-1-1 Showa-cho, Kariya-shi, Aichi F-term in DENSO Corporation (Reference) 3H076 AA05 BB38 BB41 CC15 CC16
Claims (9)
て回転するハブを有し、このハブを介して回転装置の回
転軸にトルク伝達を行う動力伝達装置であって、 前記ハブは、前記回転軸に結合される第１のハブと、こ
の第１のハブに結合されて、外部の駆動源より伝達され
たトルクを前記第１のハブに伝達する第２のハブとを有
し、前記第１のハブと第２のハブとの少なくとも一方側
が樹脂または焼結金属で構成され、その一方側のハブ
は、前記回転装置側の異常により過負荷となった時に、
他方側のハブとの結合部が破壊されることにより、前記
回転軸へのトルク伝達を遮断することを特徴とする動力
伝達装置。1. A power transmission device having a hub that rotates by receiving a torque transmitted from an external drive source, and transmitting torque to a rotation shaft of a rotation device via the hub, wherein the hub includes: A first hub coupled to the rotating shaft, and a second hub coupled to the first hub and transmitting torque transmitted from an external drive source to the first hub; At least one side of the first hub and the second hub is made of resin or sintered metal, and one of the hubs is overloaded due to an abnormality on the rotating device side.
A power transmission device, wherein a torque transmission to the rotary shaft is interrupted by a breakage of a coupling portion with a hub on the other side.
合部が噛み合うことで互いに回転規制されていることを
特徴とする請求項１に記載した動力伝達装置。2. The power transmission device according to claim 1, wherein the first hub and the second hub are restricted from rotating with each other by engagement of the connecting portions of the first hub and the second hub.
て、 前記第１のハブと第２のハブは、略軸方向に対向する互
いの対向面に前記結合部が設けられ、略軸方向に結合さ
れていることを特徴とする動力伝達装置。3. The power transmission device according to claim 2, wherein the first hub and the second hub are provided with the coupling portions on opposing surfaces of the first hub and the second hub that face each other substantially in the axial direction. A power transmission device characterized by being coupled.
ブが金属で構成され、他方のハブが樹脂で構成され、且
つ前記一方のハブの一部が他方のハブにインサート成形
されていることを特徴とする請求項１に記載した動力伝
達装置。4. The first hub and the second hub, wherein one hub is made of metal, the other hub is made of resin, and a part of the one hub is insert-molded on the other hub. The power transmission device according to claim 1, wherein:
て回転し、且つ回転装置の回転軸に結合されたハブを有
し、このハブを介して前記回転軸にトルク伝達を行う動
力伝達装置であって、 前記ハブは、樹脂または焼結金属で構成されており、前
記回転装置側の異常により過負荷となった時に、前記回
転軸との結合部が破壊されることにより、前記回転軸へ
のトルク伝達を遮断することを特徴とする動力伝達装
置。5. A power transmission which rotates by receiving torque transmitted from an external drive source, and has a hub coupled to a rotation shaft of a rotation device, and transmits torque to the rotation shaft via the hub. The device, wherein the hub is made of a resin or a sintered metal, and when an overload is caused by an abnormality on the rotating device side, a joint with the rotating shaft is broken, whereby the rotation is performed. A power transmission device for interrupting torque transmission to a shaft.
ン嵌合して回転規制されていることを特徴とする請求項
５に記載した動力伝達装置。6. The power transmission device according to claim 5, wherein said hub is spline-fitted to an outer periphery of said rotary shaft and is restricted in rotation.
記回転軸の外周にテーパ嵌合して回転規制されているこ
とを特徴とする請求項５に記載した動力伝達装置。7. The power transmission device according to claim 5, wherein the hub is made of resin, and the rotation of the hub is restricted by being tapered to the outer periphery of the rotating shaft.
て、 前記回転軸側の負荷トルクが所定値以上に増大した時
に、前記回転軸とハブとの相対回転によって前記ハブ側
の嵌合面が摩耗することを特徴とする動力伝達装置。8. The power transmission device according to claim 7, wherein when the load torque on the rotating shaft side increases to a predetermined value or more, the fitting surface on the hub side is formed by relative rotation between the rotating shaft and the hub. A power transmission device characterized by wear.
焼結金属は、疲労強度に対し破壊強度が４倍以下である
ことを特徴とする動力伝達装置。9. A power transmission device according to claim 1, wherein said resin or sintered metal has a breaking strength not more than four times as high as a fatigue strength.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21340799A JP4078761B2 (en) | 1999-07-28 | 1999-07-28 | Power transmission device |
| US09/597,831 US6332842B1 (en) | 1999-06-21 | 2000-06-19 | Rotation transmitter having torque limiting mechanism |
| DE10030068.5A DE10030068B4 (en) | 1999-06-21 | 2000-06-19 | Circulation transmission device with torque limiting device |
| DE10066236.6A DE10066236B4 (en) | 1999-06-21 | 2000-06-19 | Circulation transmission device with torque limiting device |
| DE20023516U DE20023516U1 (en) | 1999-06-21 | 2000-06-19 | Rotation transmission device for vehicle air-conditioning unit compressor; has torque-limiting unit to interrupt rotation transmission from pulley to output disc if torque difference exceeds threshold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21340799A JP4078761B2 (en) | 1999-07-28 | 1999-07-28 | Power transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001041308A true JP2001041308A (en) | 2001-02-13 |
| JP4078761B2 JP4078761B2 (en) | 2008-04-23 |
Family
ID=16638726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21340799A Expired - Fee Related JP4078761B2 (en) | 1999-06-21 | 1999-07-28 | Power transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4078761B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276777A (en) * | 2001-03-15 | 2002-09-25 | Denso Corp | Power transmitting device |
| WO2003029655A1 (en) * | 2001-09-27 | 2003-04-10 | Kabushiki Kaisha Toyota Jidoshokki | Compressor |
| EP1327790A3 (en) * | 2002-01-10 | 2003-09-24 | Kabushiki Kaisha Toyota Jidoshokki | Torque limiter |
| WO2005075846A1 (en) * | 2004-02-10 | 2005-08-18 | Valeo Thermal Systems Japan Corporation | Torque transmission device of compressor |
| JP2006153258A (en) * | 2004-10-26 | 2006-06-15 | Denso Corp | Power transmission device |
| KR100799552B1 (en) * | 2002-02-21 | 2008-01-31 | 한라공조주식회사 | Pulley assembly for clutchless compressor |
| FR2914720A1 (en) * | 2007-04-04 | 2008-10-10 | Skf Ab | ROLLER OR ROLLER DEVICE |
| KR100885619B1 (en) * | 2002-11-14 | 2009-02-24 | 한라공조주식회사 | Clutchless Compressor with Parting Part |
| KR100913630B1 (en) * | 2004-01-18 | 2009-08-24 | 헥시온 스페셜티 케미컬스 게엠베하 | Apparatus for transmitting a torque from motor to compressor |
| DE10254937B4 (en) * | 2001-11-26 | 2010-02-11 | DENSO CORPORATION, Kariya-shi | Moment transmission device with torque limiter |
| WO2015159488A1 (en) * | 2014-04-17 | 2015-10-22 | 株式会社デンソー | Power transmission device |
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1999
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4613432B2 (en) * | 2001-03-15 | 2011-01-19 | 株式会社デンソー | Power transmission device |
| JP2002276777A (en) * | 2001-03-15 | 2002-09-25 | Denso Corp | Power transmitting device |
| WO2003029655A1 (en) * | 2001-09-27 | 2003-04-10 | Kabushiki Kaisha Toyota Jidoshokki | Compressor |
| DE10254937B4 (en) * | 2001-11-26 | 2010-02-11 | DENSO CORPORATION, Kariya-shi | Moment transmission device with torque limiter |
| EP1327790A3 (en) * | 2002-01-10 | 2003-09-24 | Kabushiki Kaisha Toyota Jidoshokki | Torque limiter |
| KR100799552B1 (en) * | 2002-02-21 | 2008-01-31 | 한라공조주식회사 | Pulley assembly for clutchless compressor |
| KR100885619B1 (en) * | 2002-11-14 | 2009-02-24 | 한라공조주식회사 | Clutchless Compressor with Parting Part |
| KR100913630B1 (en) * | 2004-01-18 | 2009-08-24 | 헥시온 스페셜티 케미컬스 게엠베하 | Apparatus for transmitting a torque from motor to compressor |
| JP2005226451A (en) * | 2004-02-10 | 2005-08-25 | Zexel Valeo Climate Control Corp | Torque transmission device of compressor |
| WO2005075846A1 (en) * | 2004-02-10 | 2005-08-18 | Valeo Thermal Systems Japan Corporation | Torque transmission device of compressor |
| JP2006153258A (en) * | 2004-10-26 | 2006-06-15 | Denso Corp | Power transmission device |
| JP4561411B2 (en) * | 2004-10-26 | 2010-10-13 | 株式会社デンソー | Power transmission device |
| FR2914720A1 (en) * | 2007-04-04 | 2008-10-10 | Skf Ab | ROLLER OR ROLLER DEVICE |
| WO2015159488A1 (en) * | 2014-04-17 | 2015-10-22 | 株式会社デンソー | Power transmission device |
| JP2015206375A (en) * | 2014-04-17 | 2015-11-19 | 株式会社デンソー | Power transmission device |
| US10113596B2 (en) | 2014-04-17 | 2018-10-30 | Denso Corporation | Power transmission device |
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