JP5359317B2 - Valve timing control device - Google Patents

Valve timing control device Download PDF

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JP5359317B2
JP5359317B2 JP2009016985A JP2009016985A JP5359317B2 JP 5359317 B2 JP5359317 B2 JP 5359317B2 JP 2009016985 A JP2009016985 A JP 2009016985A JP 2009016985 A JP2009016985 A JP 2009016985A JP 5359317 B2 JP5359317 B2 JP 5359317B2
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outer peripheral
seal member
vane
rotor
seal
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JP2010174700A (en
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祐司 野口
一成 安達
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Aisin Corp
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Aisin Seiki Co Ltd
Aisin Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34479—Sealing of phaser devices

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  • Valve Device For Special Equipments (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve open/close timing control device with reduced cost and mechanical loss. <P>SOLUTION: The valve open/close timing control device is located between an inner periphery member 2 and an outer periphery member 6 rotating relatively each other, a vane member 2b integrally rotating with the inner periphery member 2, a valve shaft 4 fixed to the inner periphery member 2, a rotating input member 6d integrally or separately engaging with the outer periphery member 6, and the inner periphery member 2 and the outer periphery member 6, and includes a plurality of fluid pressure chambers 7 divided into an advance angle oil chamber 7a and a retard angle oil chamber 7b by the vane member 2b. Seal members 3a, 3b pressed against the outer periphery member 6 by one of a hydraulic pressure of the advance angle oil chamber 7a and a hydraulic pressure of the retard angle oil chamber 7b is provided in at least one of an opposing surface of the inner periphery member 2 and the outer periphery member 6, and an opposing surface of the vane member 2b and the outer periphery member 6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、内燃機関の吸・排気弁の開閉時期を制御する弁開閉時期制御装置に関するものである。   The present invention relates to a valve opening / closing timing control device for controlling the opening / closing timing of intake and exhaust valves of an internal combustion engine.

近年、内燃機関の運転状態に応じて吸気弁または排気弁の開閉時期を変更可能とする弁開閉時期制御装置がカムシャフトの一端に取り付けられるようになっている。   In recent years, a valve opening / closing timing control device that can change the opening / closing timing of an intake valve or an exhaust valve in accordance with the operating state of an internal combustion engine is attached to one end of a camshaft.

この種の弁開閉時期制御装置の一方式として、例えば特許文献１に記載の技術が開示されている。すなわち、クランクシャフトからの機関回転動力をタイミングチェーン等の動力伝達手段によりカムシャフトに伝達する弁開閉時期制御装置において、ベーンロータ（内周部材）の外周面および両端面に弾力性を有するシール部材が設けられている。このシール部材はハウジング（外周部材）の内面に押し付けられており、機械加工により生じるハウジングの内面の凹凸をシール部材が埋めるため、ハウジングの内面の加工精度を低くしても、シール性を確保することが可能となっている。   As one type of this type of valve opening / closing timing control device, for example, a technique disclosed in Patent Document 1 is disclosed. That is, in a valve opening / closing timing control device that transmits engine rotational power from a crankshaft to a camshaft by power transmission means such as a timing chain, seal members having elasticity on outer peripheral surfaces and both end surfaces of a vane rotor (inner peripheral member) are provided. Is provided. This seal member is pressed against the inner surface of the housing (outer peripheral member), and the seal member fills the unevenness of the inner surface of the housing caused by machining, so that the sealing performance is ensured even if the processing accuracy of the inner surface of the housing is lowered. It is possible.

特開２００５−３４４５８６号公報JP 2005-344586 A

しかしながら、この構成によれば、ハウジングの内面とシール部材とが常に押し付けられていることから、ハウジング内面又はシール部材が摩耗する可能性がある。あるいは低摩擦材の使用および／または低摩擦形状にすることにより摩耗を防止することも可能であるが、そのためにはハウジング内周面に摩耗防止の表面処理を施すか、耐摩耗性に優れたシール部材を採用せざるを得ず、製品としてコストアップが避けられない。また、ハウジングの内面とシール部材とが常に押し付けられていることから、ハウジングの内面とシール部材との摺動抵抗が大きくなって、装置の機械的損失が増大するという虞があった。   However, according to this configuration, since the inner surface of the housing and the seal member are constantly pressed, the inner surface of the housing or the seal member may be worn. Alternatively, it is possible to prevent wear by using a low-friction material and / or a low-friction shape, but for that purpose, surface treatment for preventing wear is applied to the inner peripheral surface of the housing, or wear resistance is excellent. A seal member must be employed, and the cost of the product is inevitable. Further, since the inner surface of the housing and the seal member are constantly pressed, there is a concern that the sliding resistance between the inner surface of the housing and the seal member increases, and the mechanical loss of the apparatus increases.

そこで本発明は弁開閉時期制御装置において、低コストで機械的損失の少ない弁開閉時期制御装置を提供することを課題とする。   Therefore, an object of the present invention is to provide a valve opening / closing timing control device that is low in cost and has little mechanical loss.

上記課題を解決するために講じた第１の技術的手段は、内周部材と、前記内周部材と相対回転する外周部材と、前記内周部材と一体回転するベーン部材と、前記内周部材に締結された弁軸と、前記外周部材と一体または別体に係合する回転入力部材と、前記内周部材と前記外周部材との間に位置し、前記ベーン部材によって進角油室と遅角油室とに二分される複数の流体圧室と、を備え、前記内周部材と前記外周部材との軸方向摺動面と周方向摺動面、および前記ベーン部材と前記外周部材との軸方向摺動面と周方向摺動面に、前記進角油室および前記遅角油室のどちらか一方の油圧により前記外周部材側に押圧されるシール部材を設け、前記シール部材は、前記弁軸方向一側他側一対の第１のシール部材および第２のシール部材から構成され、前記第１のシール部材および前記第２のシール部材はそれぞれ、前記内周部材のロータ部の端面に環状に設けられた環状部と、前記ロータ部の端面から前記ベーン部材の端面に渡って前記環状部から前記ベーン部材の円弧状の外周面まで放射状に延びる第１の直線部と、前記ベーン部材の外周面に前記内周部材の軸線に沿って設けられ前記第１の直線部に連結している第１の円弧部と、前記ロータ部の端面に前記環状部から前記ロータ部の円弧状の外周面まで放射状に設けられた第２の直線部と、前記ロータ部の外周面に前記内周部材の軸線に沿って設けられ前記第２の直線部に連結している第２の円弧部と、を有し、前記第１のシール部材と前記第２のシール部材とは、前記第１のシール部材の前記第１の円弧部と前記第２のシール部材の前記第１の円弧部と、および前記第１のシール部材の前記第２の円弧部と前記第２のシール部材の前記第２の円弧部において、前記弁軸方向に間隙を有しつつステップ状に噛み合うように当接していることである。 The first technical means taken to solve the above problems includes an inner peripheral member, an outer peripheral member that rotates relative to the inner peripheral member, a vane member that rotates integrally with the inner peripheral member, and the inner peripheral member. A valve shaft fastened to the outer peripheral member, a rotation input member that engages with the outer peripheral member integrally or separately, and the inner peripheral member and the outer peripheral member. A plurality of fluid pressure chambers divided into a square oil chamber, an axial sliding surface and a circumferential sliding surface of the inner circumferential member and the outer circumferential member, and a vane member and the outer circumferential member The axial sliding surface and the circumferential sliding surface are provided with a seal member that is pressed against the outer peripheral member side by the hydraulic pressure of one of the advance oil chamber and the retard oil chamber , Consists of a pair of first seal member and second seal member on the other side in the valve axial direction Each of the first seal member and the second seal member extends from the end surface of the rotor portion to the end surface of the vane member. A first linear portion extending radially from the annular portion to the arc-shaped outer peripheral surface of the vane member, and an outer peripheral surface of the vane member provided along the axis of the inner peripheral member and connected to the first linear portion The first arc portion, the second straight portion provided radially from the annular portion to the arc-shaped outer peripheral surface of the rotor portion on the end surface of the rotor portion, and the outer peripheral surface of the rotor portion A second arcuate portion provided along the axis of the inner peripheral member and connected to the second linear portion, wherein the first seal member and the second seal member are The first arc portion and the second seal portion of one seal member The first arc portion of the first seal member and the second arc portion of the first seal member and the second arc portion of the second seal member while having a gap in the valve shaft direction. In contact with each other so as to mesh with each other.

本発明によれば、内周部材と外周部材との対向面およびベーン部材と外周部材との対向面の少なくとも一箇所に、進角油室および遅角油室のどちらか一方の油圧により外周部材側に押圧されるシール部材を設けたので、カムシャフトのトルク変動により生ずる回転力を内周部材の回転力に利用することができ、弁開閉時期制御装置の機械損失を低減することができる。   According to the present invention, at least one of the opposing surfaces of the inner peripheral member and the outer peripheral member and the opposing surfaces of the vane member and the outer peripheral member is subjected to the outer peripheral member by the hydraulic pressure of either the advance oil chamber or the retard oil chamber. Since the seal member pressed to the side is provided, the rotational force generated by the torque fluctuation of the camshaft can be used as the rotational force of the inner peripheral member, and the mechanical loss of the valve opening / closing timing control device can be reduced.

更に、シール部材が内周部材と外周部材との軸方向摺動面と周方向摺動面、およびベーン部材と外周部材との軸方向摺動面と周方向摺動面をシールすることにより、従来必要であった、内周部材、外周部材およびベーン部材の高精度の加工および研磨が低減できる。よって、弁開閉時期制御装置の低コスト化および機械損失を低減することができる。
そして、第１のシール部材と第２のシール部材とは、第１のシール部材の第１の円弧部と第２のシール部材の第１の円弧部、および第１のシール部材の第２の円弧部と第２のシール部材の第２の円弧部は、前記弁軸方向に間隙を有しつつステップ状に噛み合うように当接していることで、第１のシール部材と第２のシール部材とが弁軸方向一端側他端側（外方向）に押圧される際に、第１のシール部材と第２のシール部材とが完全に離間するのを抑制できる。また、内周部材、外周部材、ベーン部材といったものとシール部材は熱膨張係数が異なる中、熱による各部材の膨張収縮によるシール性低下を抑制できる。 Further, the sealing member seals the axial sliding surface and the circumferential sliding surface of the inner peripheral member and the outer peripheral member, and the axial sliding surface and the circumferential sliding surface of the vane member and the outer peripheral member, High-precision processing and polishing of the inner peripheral member, outer peripheral member, and vane member, which have been necessary conventionally, can be reduced. Therefore, the cost and mechanical loss of the valve timing control device can be reduced.
The first seal member and the second seal member include the first arc portion of the first seal member, the first arc portion of the second seal member, and the second arc portion of the first seal member. The first seal member and the second seal member are in contact with each other so that the arc portion and the second arc portion of the second seal member mesh in a stepped manner with a gap in the valve shaft direction. Can be prevented from being completely separated from each other when the first and second seal members are pressed toward the other end side (outward direction). Further, while the sealing member is different from the inner peripheral member, the outer peripheral member, the vane member, and the like, it is possible to suppress a decrease in sealing performance due to expansion and contraction of each member due to heat.

本発明の第一の実施形態における弁開閉時期制御装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the valve opening / closing timing control apparatus in 1st embodiment of this invention. 図１のII−II矢視図である。It is an II-II arrow line view of FIG. 内部ロータ２とシール部材３ａ、３ｂとの装着状態を示す斜視図である。It is a perspective view which shows the mounting state of the internal rotor 2 and seal member 3a, 3b. 本発明の第二の実施形態における弁開閉時期制御装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the valve timing control apparatus in 2nd embodiment of this invention.

＜第一の実施形態＞
本発明の実施の形態について、図面を参照して説明する。なお、本発明は、エンジンの吸気側および排気側の少なくとも一方の弁開閉時期を制御するものであるが、ここでは主に吸気側に適用した場合を説明する。 <First embodiment>
Embodiments of the present invention will be described with reference to the drawings. The present invention controls the valve opening / closing timing of at least one of the intake side and the exhaust side of the engine. Here, the case where the present invention is mainly applied to the intake side will be described.

図１、図２、図３において、内部ロータ（内周部材）２は、エンジンの吸気カムシャフト（弁軸）４に、ボルト５などの締結手段によって締結されるとともに、一体的にベーン部（ベーン部材）２ｂを備えている。すなわち、内部に油路などが形成されているロータ部２ａとベーン部２ｂとで構成されている。ここで、ロータ部２ａとベーン部２ｂとは別体であっても良い。   1, 2, and 3, an internal rotor (inner peripheral member) 2 is fastened to an intake camshaft (valve shaft) 4 of an engine by fastening means such as a bolt 5 and a vane portion ( (Vane member) 2b. In other words, the rotor portion 2a and the vane portion 2b are formed with an oil passage or the like formed therein. Here, the rotor part 2a and the vane part 2b may be separate.

外部ロータ（外周部材）６はフロントプレート６ａとハウジング６ｂとリアプレート６ｃで構成されている。ハウジング６ｂ内には３箇所の凸部が設けられ、隣り合う凸部間と内部ロータ２とで流体圧室７が形成されている。内部ロータ２のベーン部２ｂは、ハウジング内の凸部と対向して配設され流体圧室７を進角油室７ａおよび遅角油室７ｂに区画している。進角油室７ａおよび遅角油室７ｂには図示しない油圧供給源から図示しない油圧制御弁及び進角側油圧通路または遅角側油圧通路を介して作動油が給排される。   The external rotor (outer peripheral member) 6 includes a front plate 6a, a housing 6b, and a rear plate 6c. Three convex portions are provided in the housing 6b, and a fluid pressure chamber 7 is formed between the adjacent convex portions and the internal rotor 2. The vane portion 2b of the internal rotor 2 is disposed to face the convex portion in the housing, and divides the fluid pressure chamber 7 into an advance oil chamber 7a and a retard oil chamber 7b. The hydraulic oil is supplied to and discharged from the hydraulic oil supply source (not shown) through a hydraulic control valve (not shown) and an advanced hydraulic passage or a retarded hydraulic passage to the advanced oil chamber 7a and the retarded oil chamber 7b.

内部ロータ２のロータ部２ａおよびベーン部２ｂの軸方向両端面は、フロントプレート６ａおよびリアプレート６ｃと所定の隙間をもって対向している。また、リアプレート６ｃにはタイミングスプロケット（回転入力部材）６ｄが固設されている。タイミングスプロケット６ｄには、周知のように、図示していないクランクシャフトから図示していないクランクスプロケットとタイミングチェーンを介して回転動力が伝達される。   Both axial end surfaces of the rotor portion 2a and the vane portion 2b of the inner rotor 2 are opposed to the front plate 6a and the rear plate 6c with a predetermined gap. A timing sprocket (rotation input member) 6d is fixed to the rear plate 6c. As is well known, rotational power is transmitted to the timing sprocket 6d from a crankshaft (not shown) via a crank sprocket (not shown) and a timing chain.

内部ロータ２の軸方向両端面およびベーン部２ｂのハウジング６ｂとの摺動面には、樹脂あるいはゴムなどの可撓性を有する材質からなる左右一対のシール部材３ａ、３ｂが装着される溝８が形成されている。このシール部材３ａ、３ｂは、それぞれ内部ロータ２のロータ部２ａの端面（フロントプレート６ａ側の端面およびリアプレート６ｃ側の端面）に環状に設けられた環状部３ｃと、ロータ部２ａの端面からベーン部２ｂの端面に渡って環状部３ｃからベーン部２ｂの円弧状の外周面（内部ロータのベーン部外周面）まで放射状に延びる直線部３ｄと、ベーン部２ｂの外周面に内部ロータ２の軸線に沿って設けられ直線部３ｄに連結している円弧部３ｅと、ロータ部２ａの端面に環状部３ｃからロータ部２ａの円弧状の外周面（内部ロータのロータ部外周面）まで放射状に設けられた直線部３ｆと、ロータ部２ａの外周面に内部ロータ２の軸線に沿って設けられ直線部３ｆに連結している円弧部３ｇとを備えている。   Grooves 8 in which a pair of left and right seal members 3a, 3b made of a flexible material such as resin or rubber are mounted on both axial end surfaces of the internal rotor 2 and sliding surfaces of the vane portion 2b with the housing 6b. Is formed. The seal members 3a and 3b are respectively formed from an annular portion 3c provided annularly on the end surface of the rotor portion 2a of the internal rotor 2 (an end surface on the front plate 6a side and an end surface on the rear plate 6c side), and an end surface of the rotor portion 2a. A linear portion 3d extending radially from the annular portion 3c to the arcuate outer peripheral surface of the vane portion 2b (the outer peripheral surface of the vane portion of the internal rotor) across the end surface of the vane portion 2b, and the outer rotor surface of the vane portion 2b An arc portion 3e provided along the axis and connected to the straight portion 3d, and radially from the annular portion 3c to the arc-shaped outer peripheral surface of the rotor portion 2a (the rotor portion outer peripheral surface of the inner rotor) on the end surface of the rotor portion 2a The linear part 3f provided, and the circular arc part 3g provided along the axis of the internal rotor 2 on the outer peripheral surface of the rotor part 2a and connected to the linear part 3f are provided.

すなわち、シール部材３ａ、３ｂは、環状部３ｃから長短２種類の直線部３ｄ、３ｆが放射状に延び直線部３ｄ、３ｆの端部で直角方向に屈曲した円弧部３ｅ、３ｇから成り、これらが一体的に成型されたものである。このシール部材３ａ、３ｂが内部ロータ２の両端面から内部ロータ２を挟持するように溝８に装着され、内部ロータ２の略中央にて左右一対のシール部材３ａ、３ｂの円弧部３ｅ、３ｇがステップ状に噛み合うように当接している。   That is, the seal members 3a and 3b are composed of arc-shaped portions 3e and 3g in which two kinds of long and short straight portions 3d and 3f extend radially from the annular portion 3c and are bent at right angles at the ends of the straight portions 3d and 3f. It is molded integrally. The seal members 3a and 3b are mounted in the groove 8 so as to sandwich the internal rotor 2 from both end faces of the internal rotor 2, and the arc portions 3e and 3g of the pair of left and right seal members 3a and 3b at the approximate center of the internal rotor 2. Are in contact with each other so as to mesh with each other in a step shape.

ベーン部２ｂの端面の溝８には、進角油室７ａと連通する連通溝９が形成されており、進角油室７ａの油圧がシール部材３ａ、３ｂの背面に回り込む構成となっている。   The groove 8 on the end face of the vane portion 2b is formed with a communication groove 9 that communicates with the advance oil chamber 7a, and the oil pressure in the advance oil chamber 7a goes around the back of the seal members 3a and 3b. .

つぎに、以上のように構成した本実施形態の弁開閉時期制御装置１の作動を説明する。   Next, the operation of the valve timing control apparatus 1 of the present embodiment configured as described above will be described.

エンジンの運転中には、カムシャフト４にトルク反力が発生する現象はよく知られている。具体的には、図示しないカムとバルブスプリングの力に起因するトルク反力で、カムがスプリングを押し下げる際には大きなトルクが必要であり、その後はスプリングによりカムは押し上げられるので、カムはスプリングにより回されることになる。このようにカムシャフト４は正負のトルクが発生するトルク変動を伴い回転している。   It is well known that a torque reaction force is generated in the camshaft 4 during engine operation. Specifically, a torque reaction force due to the force of the cam and the valve spring (not shown) requires a large torque when the cam pushes down the spring, and thereafter the cam is pushed up by the spring. Will be turned. Thus, the camshaft 4 rotates with torque fluctuations that generate positive and negative torque.

図２はエンジン始動時の状態を示している。ロックキー１０はロータ２ａに形成されたキー溝１１に没入し外部ロータ６と内部ロータ２とが一体となって矢印方向に回転している。エンジンが始動し、外部ロータ６と内部ロータ２との位相を進角方向に変更するため進角油路に油圧が作用すると、進角用油圧でロックキー１０が径外方向に移動しロック解除状態と成る。また、進角用油圧は連通溝９を介してシール部材３ａ、３ｂを外方向に押圧するので、シール部材３ａ、３ｂはフロントプレート６ａ、ハウジング６ｂ、リアプレート６ｃ側に押し付けられて各摺動面をシールし、進角油室７ａの圧力が維持される。   FIG. 2 shows a state when the engine is started. The lock key 10 is immersed in a key groove 11 formed in the rotor 2a, and the outer rotor 6 and the inner rotor 2 are integrally rotated in the direction of the arrow. When the engine starts and the oil pressure acts on the advance oil passage to change the phase between the external rotor 6 and the internal rotor 2 in the advance direction, the lock key 10 moves radially outward by the advance oil pressure and unlocks. State. Further, since the advance hydraulic pressure presses the seal members 3a and 3b outwardly through the communication groove 9, the seal members 3a and 3b are pressed against the front plate 6a, the housing 6b, and the rear plate 6c to slide each other. The surface is sealed, and the pressure in the advance oil chamber 7a is maintained.

進角油室７ａの圧力により、内部ロータ２は外部ロータ６に対し進角方向（矢印方向）に相対回転する。ここでカムシャフト４のトルク変動により、内部ロータ２が進角方向に回されて進角油室７ａの圧力が負圧になると、シール部材３ａ、３ｂを外方向に押し付ける力が小さくなるので、外部ロータ６とシール部材３ａ、３ｂとの摺動抵抗が少なくなり、内部ロータ２はさらに進角方向に回されやすくなる。すなわち、カムのトルク反力を有効に利用することにより、進角方向への位相変換を効率よく行うことができる。   Due to the pressure of the advance oil chamber 7a, the inner rotor 2 rotates relative to the outer rotor 6 in the advance direction (arrow direction). Here, when the internal rotor 2 is rotated in the advance direction due to the torque fluctuation of the camshaft 4 and the pressure in the advance oil chamber 7a becomes negative, the force pressing the seal members 3a and 3b outward becomes small. The sliding resistance between the outer rotor 6 and the seal members 3a and 3b is reduced, and the inner rotor 2 is further easily rotated in the advance direction. That is, the phase conversion in the advance direction can be efficiently performed by effectively utilizing the torque reaction force of the cam.

＜第二の実施形態＞
上述の第一の実施形態では、一対のシール部材を用いた場合を説明したが、図４に示すように、内部ロータ２２のフロントプレート６ａ側またはリアプレート６ｃ側にのみ、一つのシール部材３ｃを装着しても同様の効果を得ることができる。 <Second Embodiment>
In the first embodiment described above, the case of using a pair of seal members has been described. However, as shown in FIG. 4, only one seal member 3c is provided on the front plate 6a side or the rear plate 6c side of the internal rotor 22. The same effect can be obtained even if the is mounted.

図４のシール部材３ｈは、第一の実施形態に用いたシール部材３ａの円弧部３ｅと３ｇとを、リアプレート６ｃ側まで延長したものである。すなわちシール部材３ｈは、図３のシール部材３ａを参酌して説明すると、内部ロータ２（内部ロータ２２）のロータ部２ａの一方の端面（フロントプレート６ａ側の端面）に環状に設けられた環状部３ｃと、ロータ部２ａの一方の端面からベーン部材２ｂの端面に渡って環状部３ｃからベーン部材２ｂの円弧状の外周面まで放射状に延びる直線部３ｄと、ベーン部材２ｂの外周面に内部ロータ２（内部ロータ２２）の軸線に沿ってロータ部２ａの他方の端面（リアプレート６ｃ側の端面）まで設けられ直線部３ｄに連結している円弧部３ｅと、ロータ部２ａの一方の端面に環状部３ｃからロータ部２ａの円弧状の外周面まで放射状に設けられた直線部３ｆと、ロータ部２ａの外周面に内部ロータ２（内部ロータ２２）の軸線に沿ってロータ部２ａの他側の端面まで設けられ直線部３ｆに連結している円弧部３ｇとを備えている。   The seal member 3h in FIG. 4 is obtained by extending the arc portions 3e and 3g of the seal member 3a used in the first embodiment to the rear plate 6c side. That is, the seal member 3h will be described with reference to the seal member 3a of FIG. 3. An annular ring provided on one end surface (end surface on the front plate 6a side) of the rotor portion 2a of the internal rotor 2 (internal rotor 22). A portion 3c, a linear portion 3d extending radially from one end surface of the rotor portion 2a to the arc-shaped outer peripheral surface of the vane member 2b from the one end surface of the vane member 2b, and an inner peripheral surface of the vane member 2b An arc portion 3e provided up to the other end surface (end surface on the rear plate 6c side) of the rotor portion 2a along the axis of the rotor 2 (inner rotor 22) and connected to the linear portion 3d, and one end surface of the rotor portion 2a The linear portion 3f provided radially from the annular portion 3c to the arcuate outer peripheral surface of the rotor portion 2a, and the rotor along the axis of the inner rotor 2 (inner rotor 22) on the outer peripheral surface of the rotor portion 2a Provided to the other end surface of the 2a and an arcuate portion 3g which are connected to the linear portion 3f.

上記のシール部材３ｈの構成により、進角油室７ａの圧力変動により、フロントプレート６ａ側とハウジング６ｂ側とに対する押圧力が増減し、第一の実施形態と同様に、進角方向への位相変換を効率よく行うことができる。   With the configuration of the seal member 3h, the pressure force on the front plate 6a side and the housing 6b side increases or decreases due to the pressure fluctuation of the advance oil chamber 7a, and the phase in the advance direction is the same as in the first embodiment. Conversion can be performed efficiently.

なお、本発明をエンジンの吸気弁側に採用した場合について説明したが、排気弁側に採用した場合も同様である。   In addition, although the case where this invention was employ | adopted on the intake valve side of the engine was demonstrated, the case where it employ | adopts on the exhaust valve side is also the same.

１・・・弁開閉時期制御装置
２、２２・・・内部ロータ（内周部材）
２ｂ・・・ベーン部（ベーン部材）
３ａ・・・シール部材（第１のシール部材）
３ｂ・・・シール部材（第２のシール部材）
３ｃ・・・環状部
３ｄ・・・直線部（第１の直線部）
３ｅ・・・円弧部（第１の円弧部）
３ｆ・・・直線部（第２の直線部）
３ｇ・・・円弧部（第２の円弧部）
３ｈ・・・シール部材
４・・・カムシャフト（弁軸）
６・・・外部ロータ（外周部材）
６ｄ・・・タイミングスプロケット（回転入力部材）
７・・・流体圧室
７ａ・・・進角油室
７ｂ・・・遅角油室
８・・・溝
９・・・連通溝 DESCRIPTION OF SYMBOLS 1 ... Valve opening / closing timing control device 2, 22 ... Internal rotor (inner peripheral member)
2b ... Vane part (vane member)
3a: Seal member (first seal member)
3b: Seal member (second seal member)
3c ... annular part 3d ... straight part (first straight part)
3e: Arc part (first arc part)
3f ... straight line part (second straight line part)
3g ... arc part (second arc part)
3h ... seal member 4 ... camshaft (valve shaft)
6 ... External rotor (outer peripheral member)
6d Timing sprocket (rotary input member)
7 ... Fluid pressure chamber 7a ... Advance oil chamber 7b ... Delay oil chamber 8 ... Groove 9 ... Communication groove

Claims (2)

内周部材と、
前記内周部材と相対回転する外周部材と、
前記内周部材と一体回転するベーン部材と、
前記内周部材に締結された弁軸と、
前記外周部材と一体または別体に係合する回転入力部材と、
前記内周部材と前記外周部材との間に位置し、前記ベーン部材によって進角油室と遅角油室とに二分される複数の流体圧室と、を備え、
前記内周部材と前記外周部材との軸方向摺動面と周方向摺動面、および前記ベーン部材と前記外周部材との軸方向摺動面と周方向摺動面に、前記進角油室および前記遅角油室のどちらか一方の油圧により前記外周部材側に押圧されるシール部材を設け、
前記シール部材は、前記弁軸方向一側他側一対の第１のシール部材および第２のシール部材から構成され、
前記第１のシール部材および前記第２のシール部材はそれぞれ、前記内周部材のロータ部の端面に環状に設けられた環状部と、
前記ロータ部の端面から前記ベーン部材の端面に渡って前記環状部から前記ベーン部材の円弧状の外周面まで放射状に延びる第１の直線部と、
前記ベーン部材の外周面に前記内周部材の軸線に沿って設けられ前記第１の直線部に連結している第１の円弧部と、
前記ロータ部の端面に前記環状部から前記ロータ部の円弧状の外周面まで放射状に設けられた第２の直線部と、
前記ロータ部の外周面に前記内周部材の軸線に沿って設けられ前記第２の直線部に連結している第２の円弧部と、を有し、
前記第１のシール部材と前記第２のシール部材とは、前記第１のシール部材の前記第１の円弧部と前記第２のシール部材の前記第１の円弧部と、および前記第１のシール部材の前記第２の円弧部と前記第２のシール部材の前記第２の円弧部において、前記弁軸方向に間隙を有しつつステップ状に噛み合うように当接していることを特徴とする弁開閉時期制御装置。 An inner peripheral member;
An outer peripheral member that rotates relative to the inner peripheral member;
A vane member that rotates integrally with the inner circumferential member;
A valve shaft fastened to the inner circumferential member;
A rotation input member that engages with the outer peripheral member integrally or separately;
A plurality of fluid pressure chambers located between the inner peripheral member and the outer peripheral member and divided into an advanced oil chamber and a retarded oil chamber by the vane member;
The advance oil chamber is provided on the axial sliding surface and the circumferential sliding surface of the inner peripheral member and the outer peripheral member, and on the axial sliding surface and the circumferential sliding surface of the vane member and the outer peripheral member. And a seal member that is pressed toward the outer peripheral member by the hydraulic pressure of one of the retard oil chambers,
The seal member is composed of a pair of a first seal member and a second seal member on the other side in the valve axial direction.
Each of the first seal member and the second seal member includes an annular portion provided in an annular shape on an end surface of the rotor portion of the inner peripheral member;
A first linear portion extending radially from the annular portion to the arcuate outer peripheral surface of the vane member from the end surface of the rotor portion to the end surface of the vane member;
A first arc portion provided on the outer peripheral surface of the vane member along the axis of the inner peripheral member and connected to the first straight portion;
A second linear portion provided radially on the end surface of the rotor portion from the annular portion to the arcuate outer peripheral surface of the rotor portion;
A second arc portion provided on the outer peripheral surface of the rotor portion along the axis of the inner peripheral member and connected to the second linear portion;
The first seal member and the second seal member include the first arc portion of the first seal member, the first arc portion of the second seal member, and the first The second arc portion of the seal member and the second arc portion of the second seal member are in contact with each other so as to mesh with each other while having a gap in the valve shaft direction. Valve opening / closing timing control device. 請求項１において、
前記シール部材は、可撓性を有する材質を使用していることを特徴とする弁開閉時期制御装置。 In claim 1,
The valve opening / closing timing control device characterized in that the sealing member is made of a flexible material.
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