JP6051439B2 - Hydraulic circuit - Google Patents
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- JP6051439B2 JP6051439B2 JP2012190896A JP2012190896A JP6051439B2 JP 6051439 B2 JP6051439 B2 JP 6051439B2 JP 2012190896 A JP2012190896 A JP 2012190896A JP 2012190896 A JP2012190896 A JP 2012190896A JP 6051439 B2 JP6051439 B2 JP 6051439B2
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Description
本発明は、自動変速機の油圧制御装置内にあるトランスミッションに設けたオリフィスで発生する振動の抑制に関する。 The present invention relates to suppression of vibration generated at an orifice provided in a transmission in a hydraulic control device of an automatic transmission.
バルブボデーを備えた油圧制御のトランスミッションの油圧回路においてポンプの吐出圧等を原因とする油圧脈動が発生する。このため従来から油圧回路にオリフィスを設けて油量を調整することで油圧脈動を抑制する方法があった。 Hydraulic pulsation caused by pump discharge pressure or the like occurs in a hydraulic circuit of a hydraulically controlled transmission equipped with a valve body. For this reason, conventionally, there has been a method of suppressing hydraulic pulsation by providing an orifice in a hydraulic circuit and adjusting the amount of oil.
しかしながら、オリフィスを設けた結果、油がオリフィスを通過するときに乱流が発生し、オリフィスを設けたプレートが振動して異音が発生するという問題が発生していた。これを回避すべくオリフィスを面取りすることで油を整流したり、ダブルオリフィスにすることで流速を落としたりして振動を抑制する方法も考えられるが、この方法では振動ひいては異音の発生を抑制するには不十分であった。 However, as a result of the provision of the orifice, turbulent flow is generated when oil passes through the orifice, and the plate having the orifice vibrates to generate abnormal noise. In order to avoid this, it is possible to rectify the oil by chamfering the orifice, or to reduce the flow rate by reducing the flow velocity by making it a double orifice, but this method suppresses the occurrence of vibration and abnormal noise. It was not enough to do.
本発明は、上記課題に鑑み創作されたものであり、油圧制御のトランスミッションの油圧回路に設けたオリフィスの周囲で発生する振動を抑制する構成を有する油圧回路の提供を目的とする。 The present invention has been created in view of the above problems, and an object of the present invention is to provide a hydraulic circuit having a configuration that suppresses vibration generated around an orifice provided in a hydraulic circuit of a hydraulic control transmission.
請求項１に係る本発明は、
油路を構成するバルブボデーを有する油圧制御のトランスミッションの油圧回路であって、
前記油路にはオリフィスが設けられ、
該オリフィスを設けたプレートを上流側バルブボデーと下流側バルブボデーとで挟み込み、
両バルブボデーの少なくとも一方側のバルブボデーには、油路を形成する油路壁と、前記オリフィスの周囲をプレートで支持する他の油路壁とが形成される。
The present invention according to claim 1
A hydraulic circuit of a hydraulically controlled transmission having a valve body constituting an oil passage,
The oil passage is provided with an orifice,
The plate with the orifice is sandwiched between the upstream valve body and the downstream valve body,
At least one side of the valve body between the two valve body, an oil passage wall forming the oil passages, and other Aburarokabe supporting the periphery of the orifice plate is formed.
請求項１に係る本発明の油圧回路によれば、バルブボデーに当接するプレートに孔を開けてオリフィスとし、このプレート内のオリフィスの周囲をバルブボデー側の油路壁が囲むように支持（担持）している。さらに、本油圧回路によれば、他にオリフィスの周囲をプレートで支持する油路壁を設けている。したがって、オリフィス周りのプレートの剛性が高くなり、振動を抑制することができる。すなわち、本油圧回路の場合、簡単な構造でオリフィスの油圧振動を防止することができ、異音の発生を低減し得る。 According to the hydraulic circuit of the present invention according to claim 1, a hole is formed in the plate abutting on the valve body to form an orifice, and the orifice in the plate is supported (supported) so that the oil passage wall on the valve body side surrounds the orifice. )doing. Furthermore, according to the hydraulic circuit, an oil passage wall that supports the periphery of the orifice with a plate is provided. Therefore, the rigidity of the plate around the orifice is increased and vibration can be suppressed. That is, in the case of this hydraulic circuit, the hydraulic vibration of the orifice can be prevented with a simple structure, and the generation of abnormal noise can be reduced.
また、本油圧回路はバルブボデーに油路壁を形成するだけで油路を作ることができ安価かつ簡単な構成で油圧振動および異音の発生を抑制することができる。 In addition, the hydraulic circuit can form an oil passage only by forming an oil passage wall in the valve body, and can suppress the occurrence of hydraulic vibration and noise with an inexpensive and simple configuration.
なお、上記請求項１に係る本発明の油圧回路は、例えば
油路を構成するバルブボデーを有する油圧制御のトランスミッションの油圧回路であって
前記油路にはオリフィスが設けられ、
該オリフィスを設けたプレートを一方側のバルブボデーと他方側のバルブボデーとを合わせるときに挟み込み、両側のバルブボデーには前記オリフィスの周囲を支持する油路壁が形成される構成であっても良い。
The hydraulic circuit of the present invention according to claim 1 is, for example, a hydraulic circuit of a hydraulic control transmission having a valve body that forms an oil passage, and the oil passage is provided with an orifice,
Even if the plate provided with the orifice is sandwiched when the valve body on one side and the valve body on the other side are combined, an oil passage wall that supports the periphery of the orifice is formed on the valve body on both sides. good.
請求項１に係る本発明は、一方側のバルブボデーの油路壁を問題としているが、両バルブボデーの油路壁でオリフィス周囲を支持するケースは、さらに効果的が大きい。 The present invention according to claim 1 is concerned with the oil passage wall of the valve body on one side, but the case where the periphery of the orifice is supported by the oil passage wall of both valve bodies is more effective.
また、請求項２に係る本発明において、請求項１に記載する前記油路壁は、切欠が設けられ、前記プレートと該切欠との間の隙間がオリフィスから流入した油の油路を形成しても良い。 Further, in the present invention according to claim 2, the oil passage wall according to claim 1 is provided with a notch, and a gap between the plate and the notch forms an oil passage for oil flowing from the orifice. May be.
このようにオリフィスを囲む油路壁に切欠を設けるだけで容易に油路を形成することができ、プレートの振動抑制効果も維持可能である。 In this way, the oil passage can be easily formed simply by providing a cutout in the oil passage wall surrounding the orifice, and the vibration suppression effect of the plate can be maintained.
なお、上記段落「０００９」で例示するケースの場合、請求項２に係る本発明の油圧回路の油路壁は、例えば、
それぞれの油路壁が、油路を形成するための切欠部が設けられ、該切欠部が、両バルブボデーを合わせた状態でズレた位置に配設される構成であっても良い。
In the case illustrated in the paragraph “0009”, the oil passage wall of the hydraulic circuit of the present invention according to claim 2 is, for example,
Each oil passage wall may be provided with a notch for forming an oil passage, and the notch may be disposed at a position shifted in a state where both valve bodies are combined.
請求項２に係る油路壁は請求項１の場合と同様に、一方側のバルブボデーの油路壁を問題としているが、前述の上流側と下流側とでプレートを挟み込み両バルブボデーの油路壁でオリフィス周囲を支持するケースでは、さらに効果的である。 The oil passage wall according to claim 2 has a problem with the oil passage wall of the valve body on one side as in the case of claim 1, but the oil on both valve bodies is sandwiched between the upstream side and the downstream side. It is more effective in the case where the periphery of the orifice is supported by the road wall.
上流側バルブボデーの油路壁の切欠と下流側バルブボデーの油路壁の切欠とをズラした位置に形成すると、油が上流油路（切欠）からオリフィスを通過して下流油路（切欠）にスムーズに流れていく流路を簡単に形成することができる。 If the notch of the oil passage wall of the upstream valve body and the notch of the oil passage wall of the downstream valve body are formed at a shifted position, the oil passes from the upstream oil passage (notch) through the orifice to the downstream oil passage (notch). It is possible to easily form a flow path that smoothly flows.
本発明によれば、バルブボデーの変更だけで油圧制御のトランスミッションの油圧回路に設けたオリフィスを通過する油の振動発生を抑制することができる点で有利である。 According to the present invention, it is advantageous in that generation of vibration of oil passing through an orifice provided in a hydraulic circuit of a hydraulic control transmission can be suppressed only by changing the valve body.
以下、本発明の一実施形態に係る油圧回路について、図面を参照しつつ詳細に説明する。まず、図１は両側のバルブボデーのうち本発明についての油路壁とオリフィスの位置関係を示す概略図である。図１〜図２はバルブボデーの一部の油路壁を拡大しており、（ａ）は下流の油路を形成するバルブボデー（以下、「下流バルブボデー」）側の油路壁を示しており、（ｂ）は（ａ）の油路壁と合わせられるバルブボデー（以下、「上流バルブボデー」）側の油路壁を示しており、図２に示す（ｃ）は（ａ）（ｂ）のバルブボデーの油路壁を重ね合わせた状態でのそれぞれの油路壁及びオリフィスの位置関係を示している。 Hereinafter, a hydraulic circuit according to an embodiment of the present invention will be described in detail with reference to the drawings. First, FIG. 1 is a schematic view showing the positional relationship between an oil passage wall and an orifice in the present invention among valve bodies on both sides. 1 to 2 are enlarged views of a part of the oil passage wall of the valve body, and (a) shows the oil passage wall on the valve body (hereinafter referred to as “downstream valve body”) forming the downstream oil passage. (B) shows the oil passage wall on the side of the valve body (hereinafter referred to as “upstream valve body”) to be combined with the oil passage wall of (a), and (c) shown in FIG. The positional relationship of each oil passage wall and an orifice in the state which accumulated the oil passage wall of the valve body of b) is shown.
なお、図１（ｂ）、図２において、上流バルブボデー側の油路壁は下流バルブボデーの油路壁に対して鏡面図で示されている。この図１の（ａ）下流バルブボデーと（ｂ）上流バルブボデーとの間にオリフィス１を設けた平板状のプレート（図１では図示せず（図４のプレート６参照））を挟み込んで係合させることでバルブボデーは形成される。 In FIGS. 1B and 2, the oil passage wall on the upstream valve body side is shown in a mirror view with respect to the oil passage wall of the downstream valve body. A flat plate (not shown in FIG. 1 (see plate 6 in FIG. 4)) having an orifice 1 interposed between (a) the downstream valve body and (b) the upstream valve body in FIG. The valve body is formed by combining them.
また、図１（ａ）において実線は下流バルブボデーの油路壁を示しており、右斜下ハッチングは下流バルブボデーの油路壁のうちプレート内のオリフィス１の周辺を支持する部分（下から支持する部分）を示している。 Further, in FIG. 1 (a), the solid line indicates the oil passage wall of the downstream valve body, and the lower right hatching indicates the portion of the oil passage wall of the downstream valve body that supports the periphery of the orifice 1 in the plate (from below). The supporting part) is shown.
図１（ａ）に示すようにまず、上流バルブボデーからプレートのオリフィス１を通過した油は、下流バルブボデー側の油路２に流入する。このとき右斜下ハッチングの油路壁がオリフィス１周辺のプレートを支持するためこの部分がプレートの振動の節となり、振動を低減することができる。図１（ａ）の下流バルブボデーでは振動を低減する油路壁が、オリフィス１の最近傍周囲の領域Ａの部分とその外側周囲の領域Ｂとが存在するが、ここで特に振動低減に大きく寄与するのは領域Ａの油路壁である。 As shown in FIG. 1A, first, the oil that has passed through the orifice 1 of the plate from the upstream valve body flows into the oil passage 2 on the downstream valve body side. At this time, since the oil passage wall in the lower right hatching supports the plate around the orifice 1, this portion becomes a node of vibration of the plate, and vibration can be reduced. In the downstream valve body of FIG. 1 (a), the oil passage wall for reducing the vibration includes a region A in the vicinity of the orifice 1 and a region B in the outer periphery thereof. It is the oil passage wall in region A that contributes.
領域Ａの油路壁は、図示するようにオリフィス１の周囲の大部分を囲んでプレートを支持するが、右方向に切欠３が設けられている。オリフィス１を通過（紙面に対して垂直下方方向に通過）した油は油路２に流入した後、切欠２を油路として右側に案内される。 As shown in the drawing, the oil passage wall in the region A surrounds most of the periphery of the orifice 1 to support the plate, but is provided with a notch 3 in the right direction. The oil that has passed through the orifice 1 (passed vertically downward with respect to the paper surface) flows into the oil passage 2 and then guided to the right side using the notch 2 as an oil passage.
図１（ｂ）において実線は上流バルブボデーの油路壁を示しており、左斜下ハッチングは上流バルブボデーの油路壁のうちプレート内のオリフィス１の周辺を支持する部分（上から支持する部分）を示している。 In FIG. 1 (b), the solid line indicates the oil passage wall of the upstream valve body, and the lower left hatching indicates the portion of the oil passage wall of the upstream valve body that supports the periphery of the orifice 1 in the plate (supported from above). Part).
図１（ｂ）に示すようにまず、上流バルブボデー内を通過してきた油は油路４に流入した後にプレートのオリフィス１を通過し、図１（ａ）の下流バルブボデー側に流入する。また、領域Ａの油路壁は、図示するようにオリフィス１の周囲の大部分を囲んでプレートを支持する点は図１（ａ）と同様であり、ここでは上方向に切欠５が設けられている。上流バルブボデー内の油は切欠５を通過して油路４に流入し、その後、オリフィス１を通過（紙面に対して垂直下方方向に通過）して図１（ａ）に示す下流バルブボデーの油路２に案内される。 As shown in FIG. 1B, first, the oil that has passed through the upstream valve body flows into the oil passage 4 and then passes through the orifice 1 of the plate and then flows into the downstream valve body side of FIG. Further, the oil passage wall in the region A is the same as that shown in FIG. 1A in that it surrounds most of the periphery of the orifice 1 and supports the plate as shown in FIG. ing. The oil in the upstream valve body passes through the notch 5 and flows into the oil passage 4, and then passes through the orifice 1 (passes in the downward direction perpendicular to the paper surface) to the downstream valve body shown in FIG. Guided to oil passage 2.
図２に示す（ｃ）は、図１（ａ）（ｂ）を重ね合わせた図、すなわち下流及び上流バルブボデーを合わせた状態での油路壁を示すものである。この図からも明らかなように領域Ａでは図１（ａ）（ｂ）の油路壁がオリフィス１の周囲全体を囲むように形成されており、これらの油路壁全体でオリフィス１の周囲のプレートを固定し、油のオリフィス１通過時のプレート振動を抑制している。さらに、プレートを支持する油路壁は領域Ｂでも形成されていることがわかる。図１（ａ）（ｂ）のそれぞれではオリフィス１の周囲を囲んでいるとまでは言えなかったが、両者を重ね合わすとオリフィス１外周を全て囲んでいると言える。その意味では図１の実施形態の場合、領域Ａとその外側の領域Ｂとの二重の油路壁でオリフィス１周りのプレートを囲んでいると言え、その振動抑制効果が非常に高い。 (C) shown in FIG. 2 is a diagram in which FIGS. 1 (a) and (b) are overlapped, that is, an oil passage wall in a state where the downstream and upstream valve bodies are combined. As is clear from this figure, in the region A, the oil passage walls in FIGS. 1A and 1B are formed so as to surround the entire periphery of the orifice 1, and these oil passage walls as a whole surround the orifice 1. The plate is fixed to suppress plate vibration when oil passes through the orifice 1. Further, it can be seen that the oil passage wall supporting the plate is also formed in the region B. In each of FIGS. 1 (a) and 1 (b), it cannot be said that the periphery of the orifice 1 is surrounded, but it can be said that all of the outer periphery of the orifice 1 is surrounded when they are overlapped. In that sense, in the case of the embodiment of FIG. 1, it can be said that the plate around the orifice 1 is surrounded by the double oil passage wall of the region A and the region B outside thereof, and the vibration suppressing effect is very high.
さらに、図１（ａ）（ｂ）からも明白なように切欠５は上側に空いており、切欠３は右側に空いている。したがって、油路に切欠を設けるだけで上流から下流に向かってのスムーズな油路が形成されていることがわかる。 Further, as is clear from FIGS. 1A and 1B, the notch 5 is open on the upper side, and the notch 3 is open on the right side. Therefore, it can be seen that a smooth oil passage is formed from upstream to downstream simply by providing a cutout in the oil passage.
次に、本発明の油圧回路の他の実施形態について図３〜図５に例示する。図３は、下流バルブボデーの一例であり図１（ａ）の領域Ａに相当する部分は図３では領域Ａ’であり、プレート６に当接する油路壁も同様に右斜下ハッチングで示されている。図４は、図３の下流バルブボデーと後述する図５の上流バルブボデーとの間で挟み込まれるオリフィス１’を設けた平板状のプレート６を示している。図５は、上流バルブボデーの一例である。この例では図１（ｂ）と異なり、上流バルブボデー側には特に図３のようなオリフィス１’周りの油路壁は特に設けられていない。 Next, other embodiments of the hydraulic circuit of the present invention are illustrated in FIGS. FIG. 3 is an example of the downstream valve body, and a portion corresponding to the region A in FIG. 1A is a region A ′ in FIG. 3, and the oil passage wall in contact with the plate 6 is also shown by hatching under the right angle. Has been. FIG. 4 shows a flat plate 6 provided with an orifice 1 'sandwiched between the downstream valve body of FIG. 3 and an upstream valve body of FIG. FIG. 5 is an example of the upstream valve body. In this example, unlike FIG. 1 (b), the oil passage wall around the orifice 1 'as shown in FIG. 3 is not particularly provided on the upstream valve body side.
図３に示すようにまず、上流バルブボデー（図５参照）からプレート６（図４参照）のオリフィス１’を通過した油は、図３の下流バルブボデー側の油路２’に流入する。このとき右斜下ハッチングの油路壁が図１（ａ）と同様にオリフィス１’周辺のプレート６を支持して、プレートの振動を抑制する。 As shown in FIG. 3, first, the oil that has passed through the orifice 1 'of the plate 6 (see FIG. 4) from the upstream valve body (see FIG. 5) flows into the oil passage 2' on the downstream valve body side in FIG. At this time, the oil passage wall in the hatching on the lower right side supports the plate 6 around the orifice 1 ′ as in FIG. 1A and suppresses vibration of the plate.
また、領域Ａ’の油路壁は、図３に示すようにオリフィス１’の周囲の大部分を囲んでプレートを支持するが、右方向に切欠３’が設けられている。したがって、オリフィス１’を通過した油は油路２’に流入した後、切欠３’を油路として右側に案内される。 Further, as shown in FIG. 3, the oil passage wall in the region A 'surrounds most of the periphery of the orifice 1' to support the plate, but is provided with a notch 3 'in the right direction. Therefore, the oil that has passed through the orifice 1 ′ flows into the oil passage 2 ′, and is guided to the right side using the notch 3 ′ as the oil passage.
次に図５に示すように上流バルブボデー内を通過してきた油は油路４’に流入した後にプレート６（図４参照）のオリフィス１’を通過し、図３の下流バルブボデー側に流入する。図３からも明白なように切欠３’は右側に空いている。これにより上流から下流に向かって油路が形成されていることがわかる。 Next, as shown in FIG. 5, the oil that has passed through the upstream valve body flows into the oil passage 4 ′, then passes through the orifice 1 ′ of the plate 6 (see FIG. 4), and flows into the downstream valve body side of FIG. To do. As is apparent from FIG. 3, the notch 3 'is open on the right side. Thereby, it turns out that the oil path is formed toward the downstream from the upstream.
以上、本発明の油圧回路についての実施形態およびその概念について説明してきたが本発明はこれに限定されるものではなく特許請求の範囲および明細書等に記載の精神や教示を逸脱しない範囲で他の変形例、改良例が得られることが当業者は理解できるであろう。 The embodiment and concept of the hydraulic circuit of the present invention have been described above. However, the present invention is not limited to this, and other embodiments are within the scope and spirit of the claims and description. It will be understood by those skilled in the art that variations and improvements can be obtained.
１，１’ オリフィス
２，２’ 油路
３，３’ 切欠
４，４’ 油路
５，５’ 切欠
６ プレート
1, 1 'orifice 2, 2' oil passage 3, 3 'notch 4, 4' oil passage 5, 5 'notch 6 plate
Claims (2)
前記油路にはオリフィスが設けられ、
該オリフィスを設けたプレートを上流側バルブボデーと下流側バルブボデーとで挟み込み、
両バルブボデーの少なくとも一方側のバルブボデーには、油路を形成する油路壁と、前記オリフィスの周囲をプレートで支持する他の油路壁とが形成される、ことを特徴とする油圧回路。 A hydraulic circuit of a hydraulically controlled transmission having a valve body constituting an oil passage,
The oil passage is provided with an orifice,
The plate with the orifice is sandwiched between the upstream valve body and the downstream valve body,
At least one side of the valve body between the two valve body, a hydraulic circuit, wherein an oil passage wall forming the oil passages, and other Aburarokabe supporting the periphery of the orifice plate is formed, that .
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| JP2012190896A JP6051439B2 (en) | 2012-08-31 | 2012-08-31 | Hydraulic circuit |
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| JP2012190896A JP6051439B2 (en) | 2012-08-31 | 2012-08-31 | Hydraulic circuit |
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| JP6051439B2 true JP6051439B2 (en) | 2016-12-27 |
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| JPH0512511Y2 (en) * | 1986-12-23 | 1993-03-31 | ||
| JPH0587222A (en) * | 1991-09-30 | 1993-04-06 | Suzuki Motor Corp | Hydraulic controller of continuously variable transmission |
| JP3565974B2 (en) * | 1996-02-29 | 2004-09-15 | ジヤトコ株式会社 | Hydraulic control device for automatic transmission |
| JP2003049933A (en) * | 2001-08-06 | 2003-02-21 | Denso Corp | Fluid pressure control device |
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