JP2014169772A - Bearing whirl-stop structure in transmission - Google Patents

Bearing whirl-stop structure in transmission Download PDF

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JP2014169772A
JP2014169772A JP2013043081A JP2013043081A JP2014169772A JP 2014169772 A JP2014169772 A JP 2014169772A JP 2013043081 A JP2013043081 A JP 2013043081A JP 2013043081 A JP2013043081 A JP 2013043081A JP 2014169772 A JP2014169772 A JP 2014169772A
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transmission
oil
guide collar
bearing
annular groove
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JP6011973B2 (en
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Noboru Yamazaki
騰 山崎
Keita Yano
景太 矢野
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items by whirl-stopping a bearing by using an oil guide collar.SOLUTION: An oil guide collar 18 which supplies oil to an oil passage 12e formed in a gear change shaft 12 from an oil passage 11c formed at a transmission case 11 comprises: a cylindrical part 19 which is fit to an external periphery of an axial end of the gear change shaft 12; and an arm part 20 which extends to the radial outside from the cylindrical part 19, and is fit into a recess 11d formed at the transmission case 11. Since a locking protrusion 20a formed at a tip of the arm part 20 is engaged with a locking recess 13a formed at an outer race 13 of a bearing 16, the oil guide collar 18 is fixed to the transmission case 11 and the outer race 13 is fixed to the oil guide collar 18, and thereby the outer race can be whirl-stopped with respect to the transmission case 11. By this constitution, a special whirl-stop member for whirl-stopping the outer race 13 is dispensed with, and the number part items can be reduced.

Description

本発明は、変速シャフトの軸端をミッションケースにベアリングを介して支持した変速機におけるベアリングの回り止め構造が提案される。   The present invention proposes a bearing detent structure in a transmission in which the shaft end of a transmission shaft is supported on a transmission case via a bearing.

ミッションケースにベアリングを介して支持された変速シャフトの内部に形成した油路内にオイルを供給すべく、変速シャフトの軸端に対向するミッションケースの内壁面に、皿状の区画壁部と、区画壁部の中央から変速シャフトの油路内に延びるパイプ部とを備えるオイルガイドカラーを取り付け、ミッションケースの内壁面と区画壁部との間に形成された空所からパイプ部を介して変速シャフトの油路内にオイルを供給するものが、下記特許文献１により公知である。   In order to supply oil into the oil passage formed inside the transmission shaft supported by the transmission case via the bearing, on the inner wall surface of the transmission case facing the shaft end of the transmission shaft, a dish-shaped partition wall portion, An oil guide collar having a pipe portion extending from the center of the partition wall portion into the oil passage of the transmission shaft is attached, and the speed is changed via the pipe portion from a space formed between the inner wall surface of the transmission case and the partition wall portion. The one that supplies oil into the oil passage of the shaft is known from Patent Document 1 below.

また変速機のミッションケースに変速シャフトを支持するベアリングを装着する場合、ベアリングのアウターレースをミッションケースに支持し、ベアリングのインナーレースで変速シャフトを支持することになる。このとき、アウターレースをミッションケースに対して回り止めする必要があり、従来はアウターレースに形成した切欠きに係合する回り止め部材をミッションケースにボルトで固定することで、ミッションケースに対してアウターレースを回り止めしていた。   Further, when a bearing that supports the transmission shaft is mounted on the transmission case, the outer race of the bearing is supported on the transmission case, and the transmission shaft is supported by the inner race of the bearing. At this time, it is necessary to prevent the outer race from rotating with respect to the transmission case. Conventionally, the rotation preventing member that engages with the notch formed in the outer race is fixed to the transmission case with a bolt. The outer race was stopped.

実公昭６３−１７８９０号公報Japanese Utility Model Publication No. 63-17890

しかしながら、回り止め部材をミッションケースにボルトで固定することでベアリングを回り止めすると、特別の回り止め部材やボルトが必要になって部品点数が増加する問題があった。   However, if the bearing is prevented from rotating by fixing the rotation preventing member to the transmission case with a bolt, there is a problem that a special rotation preventing member or bolt is required and the number of parts increases.

本発明は前述の事情に鑑みてなされたもので、オイルガイドカラーを利用してベアリングを回り止めすることで部品点数を削減することを目的とする。   The present invention has been made in view of the above-described circumstances, and an object thereof is to reduce the number of parts by preventing rotation of a bearing using an oil guide collar.

上記目的を達成するために、請求項１に記載された発明によれば、変速シャフトの軸端をミッションケースにベアリングを介して支持した変速機において、前記ミッションケースに固定されて該ミッションケースに形成した油路から前記変速シャフトの内部に形成した油路にオイルを供給するオイルガイドカラーを備え、前記オイルガイドカラーは、前記変速シャフトの軸端の外周に嵌合する筒状部と、前記筒状部から径方向外側に延びて前記ミッションケースに形成した回り止め凹部に嵌合する腕部とを備え、前記腕部の先端に設けた係止突起を前記ベアリングに設けた係止凹部に係合させたことを特徴とする、変速機におけるベアリングの回り止め構造が提案される。   In order to achieve the above object, according to the first aspect of the present invention, in a transmission in which a shaft end of a transmission shaft is supported on a transmission case via a bearing, the transmission case is fixed to the transmission case and fixed to the transmission case. An oil guide collar for supplying oil from the formed oil path to the oil path formed inside the transmission shaft, the oil guide collar including a cylindrical portion fitted to an outer periphery of a shaft end of the transmission shaft; An arm portion that extends radially outward from the tubular portion and engages with a rotation-preventing recess formed in the mission case, and a locking protrusion provided at the tip of the arm portion is provided in the locking recess provided in the bearing A structure for preventing rotation of a bearing in a transmission, which is characterized by being engaged, is proposed.

また請求項２に記載された発明によれば、請求項１の構成に加えて、前記オイルガイドカラーは前記筒状部から相互に離反する方向に延びる一対の前記腕部を備え、前記一対の腕部の先端にそれぞれ前記係止突起を設けたことを特徴とする、変速機におけるベアリングの回り止め構造が提案される。   According to the invention described in claim 2, in addition to the configuration of claim 1, the oil guide collar includes a pair of arm portions extending in a direction away from the cylindrical portion, and the pair of arms A structure for preventing rotation of a bearing in a transmission is proposed, characterized in that the locking projections are provided at the respective ends of the arm portions.

また請求項３に記載された発明によれば、請求項１または請求項２の構成に加えて、前記オイルガイドカラーは、前記筒状部の外周に形成されて軸方向両側を第１、第２シール部材に挟まれた第１環状溝と、前記第１環状溝内で前記筒状部を径方向に貫通する第１貫通孔とを備え、前記変速シャフトは、該変速シャフトの外周に形成されて軸方向両側を第３、第４シール部材に挟まれた第２環状溝と、前記第２環状溝内で該変速シャフトを径方向に貫通する第２貫通孔とを備え、前記ミッションケースの油路は、前記第１環状溝、前記第１貫通孔、前記第２環状溝および前記第２貫通孔を介して前記変速シャフトの油路に連通することを特徴とする、変速機におけるベアリングの回り止め構造が提案される。   According to the invention described in claim 3, in addition to the configuration of claim 1 or claim 2, the oil guide collar is formed on the outer periphery of the cylindrical portion and has both first and first axial sides. A first annular groove sandwiched between two seal members, and a first through hole that radially penetrates the cylindrical portion in the first annular groove, and the transmission shaft is formed on an outer periphery of the transmission shaft. And a second annular groove sandwiched between the third and fourth seal members on both axial sides, and a second through hole penetrating the transmission shaft in the radial direction in the second annular groove, and the transmission case The oil passage communicates with the oil passage of the transmission shaft through the first annular groove, the first through hole, the second annular groove, and the second through hole. A detent structure is proposed.

請求項１の構成によれば、変速シャフトの軸端をミッションケースにベアリングを介して支持した変速機は、ミッションケースに固定されて該ミッションケースに形成した油路から変速シャフトの内部に形成した油路にオイルを供給するオイルガイドカラーを備える。オイルガイドカラーは、変速シャフトの軸端の外周に嵌合する筒状部と、筒状部から径方向外側に延びてミッションケースに形成した回り止め凹部に嵌合する腕部とを備え、腕部の先端に設けた係止突起をベアリングに設けた係止凹部に係合させたので、ミッションケースにオイルガイドカラーを固定し、オイルガイドカラーにベアリングを固定することで、ベアリングをミッションケースに対して回り止めすることができる。これにより、ベアリングを回り止めする特別の回り止め部材が不要になって部品点数を削減することができる。   According to the configuration of the first aspect, the transmission in which the shaft end of the transmission shaft is supported by the transmission case via the bearing is formed in the transmission shaft from an oil passage fixed to the transmission case and formed in the transmission case. An oil guide collar that supplies oil to the oil passage is provided. The oil guide collar includes a cylindrical portion that fits on the outer periphery of the shaft end of the transmission shaft, and an arm portion that extends radially outward from the cylindrical portion and fits in a rotation-preventing recess formed in the transmission case. Since the locking protrusion provided at the tip of the part is engaged with the locking recess provided in the bearing, the oil guide collar is fixed to the mission case and the bearing is fixed to the oil guide collar. On the other hand, it can be prevented from rotating. This eliminates the need for a special anti-rotation member that prevents the bearing from rotating, thereby reducing the number of components.

また請求項２の構成によれば、オイルガイドカラーは筒状部から相互に離反する方向に延びる一対の腕部を備え、一対の腕部の先端にそれぞれ係止突起を設けたので、オイルガイドカラーおよびベアリングを変速シャフトの軸線を挟む二つの位置で固定することで、オイルガイドカラーおよびベアリングに偏荷重が作用するのを防止することができる。   According to the second aspect of the present invention, the oil guide collar includes a pair of arm portions extending in directions away from the cylindrical portion, and the locking projections are provided at the tips of the pair of arm portions, respectively. By fixing the collar and the bearing at two positions sandwiching the axis of the transmission shaft, it is possible to prevent an uneven load from acting on the oil guide collar and the bearing.

また請求項３の構成によれば、オイルガイドカラーは、筒状部の外周に形成されて軸方向両側を第１、第２シール部材に挟まれた第１環状溝と、第１環状溝内で筒状部を径方向に貫通する第１貫通孔とを備え、変速シャフトは、変速シャフトの外周に形成されて軸方向両側を第３、第４シール部材に挟まれた第２環状溝と、第２環状溝内で変速シャフトを径方向に貫通する第２貫通孔とを備えるので、ミッションケースの油路を、第１環状溝、第１貫通孔、第２環状溝および第２貫通孔を介して変速シャフトの油路に連通することができる。   According to the configuration of the third aspect, the oil guide collar is formed on the outer periphery of the tubular portion, the first annular groove sandwiched between the first and second seal members on both axial sides, and the first annular groove And a first through hole penetrating the cylindrical portion in the radial direction, and the speed change shaft is formed on the outer periphery of the speed change shaft and has a second annular groove sandwiched between the third and fourth seal members on both axial sides. And a second through hole penetrating the speed change shaft in the radial direction in the second annular groove, so that the oil passage of the transmission case is connected to the first annular groove, the first through hole, the second annular groove, and the second through hole. It is possible to communicate with the oil passage of the transmission shaft via

変速機の部分断面図（図２の１−１線断面図）。（第１の実施の形態）FIG. 3 is a partial cross-sectional view of the transmission (a cross-sectional view taken along line 1-1 of FIG. 2). (First embodiment) 図１の２−２線断面図。（第１の実施の形態）FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. (First embodiment) オイルガイドカラーおよびボールベアリングの斜視図。（第１の実施の形態）The perspective view of an oil guide collar and a ball bearing. (First embodiment) 図３に対応する図。（第２の実施の形態）The figure corresponding to FIG. (Second Embodiment)

第１の実施の形態First embodiment

以下、図１〜図３に基づいて本発明の第１の実施の形態を説明する。   Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

図１は自動車用の変速機の部分断面図であって、ミッションケース１１の内壁面に変速シャフト１２の軸端部が、アウターレース１３およびインナーレース１４間に複数のボール１５…を支持したボールベアリング１６を介して回転自在に支持される。ボールベアリング１６は、アウターレース１３がミッションケース１１の内壁面に突設した環状のボールベアリング支持壁１１ａの内周面に嵌合し、インナーレース１４が変速シャフト１２の外周にスプライン結合した変速ギヤ１７のボス部１７ａの外周面に嵌合することで、変速シャフト１２をミッションケース１１に間接的に支持している。そして変速シャフト１２の軸端とミッションケース１１の一部が外向きに張り出した膨出部１１ｂとの間に、オイルガイドカラー１８が装着される。   FIG. 1 is a partial sectional view of a transmission for an automobile, in which a shaft end portion of a transmission shaft 12 is supported on an inner wall surface of a transmission case 11 and a plurality of balls 15 are supported between an outer race 13 and an inner race 14. A bearing 16 is rotatably supported. The ball bearing 16 is a transmission gear in which an outer race 13 is fitted to the inner peripheral surface of an annular ball bearing support wall 11 a protruding from the inner wall surface of the transmission case 11, and the inner race 14 is splined to the outer periphery of the transmission shaft 12. The transmission shaft 12 is indirectly supported by the transmission case 11 by being fitted to the outer peripheral surface of the 17 boss portions 17a. An oil guide collar 18 is mounted between the shaft end of the transmission shaft 12 and the bulging portion 11b in which a part of the transmission case 11 projects outward.

図１〜図３から明らかなように、オイルガイドカラー１８は、円筒状の筒状部１９と、筒状部１９の軸方向一端側から径方向外側に相互に離反する方向に延びる一対の板状の腕部２０，２０とを備える。筒状部１９の外周面には、３６０°に亙って延びる第１環状溝１９ａと、第１環状溝１９ａの軸方向両側に位置する一対の環状のシール部材支持溝１９ｂ，１９ｃと、第１環状溝１９ａの底部を径方向に貫通する第１貫通孔１９ｄとが形成される。第１環状溝１９ａはミッションケース１１の内部に形成した油路１１ｃを介して図示せぬオイルポンプに連通する。また一対の腕部２０，２０の径方向外端には、軸方向一端側に折り曲げられた係止突起２０ａ，２０ａがそれぞれ形成される。   As apparent from FIGS. 1 to 3, the oil guide collar 18 includes a cylindrical tubular portion 19 and a pair of plates extending in a direction away from each other radially outward from one axial end side of the tubular portion 19. Shaped arm portions 20 and 20. On the outer peripheral surface of the cylindrical portion 19, a first annular groove 19a extending over 360 °, a pair of annular seal member support grooves 19b and 19c located on both axial sides of the first annular groove 19a, A first through hole 19d that penetrates the bottom of the one annular groove 19a in the radial direction is formed. The first annular groove 19a communicates with an oil pump (not shown) through an oil passage 11c formed inside the mission case 11. Further, locking projections 20a and 20a that are bent toward one end in the axial direction are formed at the radially outer ends of the pair of arms 20 and 20, respectively.

ミッションケース１１の膨出部１１ｂの周囲を同心円状に取り囲むボールベアリング支持壁１１ａの内側の底面には、膨出部１１ｂから直径方向外側に延びる一対の回り止め凹部１１ｄ，１１ｄが形成される。オイルガイドカラー１８の筒状部１９をミッションケース１１の膨出部１１ｂに挿入すると、オイルガイドカラー１８の一対の腕部２０，２０がミッションケース１１の一対の回り止め凹部１１ｄ，１１ｄに嵌合し、オイルガイドカラー１８がミッションケース１１に回転不能に固定される。   On the bottom surface inside the ball bearing support wall 11a that concentrically surrounds the periphery of the bulging portion 11b of the mission case 11, a pair of anti-rotation recesses 11d and 11d extending outward in the diameter direction from the bulging portion 11b are formed. When the cylindrical portion 19 of the oil guide collar 18 is inserted into the bulging portion 11 b of the mission case 11, the pair of arm portions 20, 20 of the oil guide collar 18 are fitted into the pair of detent recesses 11 d, 11 d of the mission case 11. The oil guide collar 18 is fixed to the mission case 11 so as not to rotate.

このとき、ボールベアリング１６のアウターレース１３に形成した２個の係止凹部１３ａ，１３ａに、一対の腕部２０，２０の係止突起２０ａ，２０ａがそれぞれ係合することで、オイルガイドカラー１８に対してアウターレース１３が回り止めされる。またシール部材支持溝１９ｂ，１９ｃにそれぞれ嵌合する第１シール部材２１および第２シール部材２２がミッションケース１１の膨出部１１ｂの内周面に当接することで、第１環状溝１９ａが液密にシールされる。   At this time, the engagement protrusions 20a and 20a of the pair of arm portions 20 and 20 are engaged with the two engagement recesses 13a and 13a formed on the outer race 13 of the ball bearing 16, respectively. On the other hand, the outer race 13 is prevented from rotating. Further, the first seal member 21 and the second seal member 22 respectively fitted in the seal member support grooves 19b and 19c come into contact with the inner peripheral surface of the bulging portion 11b of the mission case 11, so that the first annular groove 19a is liquid. Sealed tightly.

変速シャフト１２の軸端の外周面には、３６０°に亙って延びる第２環状溝１２ａと、第２環状溝１２ａの軸方向両側に位置する一対の環状のシール部材支持溝１２ｂ，１２ｃと、第２環状溝１２ａの底部を径方向に貫通する第２貫通孔１２ｄとが形成される。変速シャフト１２の軸端をオイルガイドカラー１８の筒状部１９の内周面に挿入すると、シール部材支持溝１２ｂ，１２ｃにそれぞれ嵌合する第３シール部材２３および第４シール部材２４が筒状部１９の内周面に当接することで、第２環状溝１２ａが液密にシールされる。   On the outer peripheral surface of the shaft end of the transmission shaft 12, a second annular groove 12a extending over 360 °, and a pair of annular seal member support grooves 12b, 12c located on both sides in the axial direction of the second annular groove 12a, A second through hole 12d that penetrates the bottom of the second annular groove 12a in the radial direction is formed. When the shaft end of the transmission shaft 12 is inserted into the inner peripheral surface of the cylindrical portion 19 of the oil guide collar 18, the third seal member 23 and the fourth seal member 24 fitted into the seal member support grooves 12b and 12c, respectively, are cylindrical. By contacting the inner peripheral surface of the portion 19, the second annular groove 12a is sealed in a liquid-tight manner.

変速シャフト１２の内部には軸方向に延びる第１油路１２ｅおよび第２油路１２ｆが平行に形成されており、それら第１、第２油路１２ｅ，１２ｆの開口端はそれぞれプラグ２５，２６で閉塞される。変速シャフト１２の第２環状溝１２ｃは、第２貫通孔１２ｄを介して第１油路１２ｅに連通する。尚、第２油路１２ｆには、変速シャフト１２の反対側の軸端からオイルが供給される。   A first oil passage 12e and a second oil passage 12f extending in the axial direction are formed in parallel inside the transmission shaft 12, and the opening ends of the first and second oil passages 12e and 12f are plugs 25 and 26, respectively. Is blocked. The second annular groove 12c of the transmission shaft 12 communicates with the first oil passage 12e through the second through hole 12d. Oil is supplied to the second oil passage 12f from the shaft end on the opposite side of the transmission shaft 12.

次に、上記構成を備えた本発明の第１の実施の形態の作用を説明する。   Next, the operation of the first embodiment of the present invention having the above configuration will be described.

図示せぬオイルポンプから供給されたオイルは、ミッションケース１１の油路１１ｃ→オイルガイドカラー１８の筒状部１９の第１環状溝１９ａ→オイルガイドカラー１８の筒状部１９の第１貫通孔１９ｄ→変速シャフト１２の第２環状溝１２ａ→変速シャフト１２の第２貫通孔１２ｄの経路で変速シャフト１２の第１油路１２ｅに供給され、そこから各部のベアリング等の被潤滑部に供給される。このとき、筒状部１９の第１環状溝１９ａの軸方向両側は第１シール部材２１および第２シール部材２２によりシールされるため、第１環状溝１９ａからのオイルの漏れが防止される。また変速シャフト１２の第２環状溝１２ａの軸方向両側は第３シール部材２３および第４シール部材２４によりシールされるため、第２環状溝１２ａからのオイルの漏れが防止される。   Oil supplied from an oil pump (not shown) flows from the oil passage 11 c of the transmission case 11 to the first annular groove 19 a of the cylindrical portion 19 of the oil guide collar 18 → the first through hole of the cylindrical portion 19 of the oil guide collar 18. 19d → the second annular groove 12a of the transmission shaft 12 → the second through hole 12d of the transmission shaft 12 is supplied to the first oil passage 12e of the transmission shaft 12, and is supplied from there to a lubricated portion such as a bearing of each part. The At this time, since both axial sides of the first annular groove 19a of the cylindrical portion 19 are sealed by the first seal member 21 and the second seal member 22, oil leakage from the first annular groove 19a is prevented. Further, since both axial sides of the second annular groove 12a of the transmission shaft 12 are sealed by the third seal member 23 and the fourth seal member 24, oil leakage from the second annular groove 12a is prevented.

変速シャフト１２の軸端をミッションケース１１の膨出部１１ｂに組み付けるには、先ずオイルガイドカラー１８の一対の腕部２０，２０の係止突起２０ａ，２０ａをボールベアリング１６のアウターレース１３の一対の係止凹部１３ａ，１３ａに圧入して固定し、次にボールベアリング１３と一体になったオイルガイドカラー１８の筒状部２９をミッションケース１１の膨出部１１ｂ内に挿入することで、オイルガイドカラー１８の一対の腕部２０，２０をミッションケース１１の回り止め凹部１１ｄ，１１ｄに嵌合するとともに、ボールベアリング１６のアウターレース１３をミッションケース１１のボールベアリング支持壁１１ａの内周に嵌合する。   In order to assemble the shaft end of the transmission shaft 12 to the bulging portion 11 b of the transmission case 11, first, the locking projections 20 a and 20 a of the pair of arm portions 20 and 20 of the oil guide collar 18 are connected to the pair of outer races 13 of the ball bearing 16. By inserting the cylindrical portion 29 of the oil guide collar 18 integrated with the ball bearing 13 into the bulging portion 11 b of the transmission case 11, The pair of arm portions 20 and 20 of the guide collar 18 are fitted into the rotation preventing recesses 11d and 11d of the mission case 11, and the outer race 13 of the ball bearing 16 is fitted to the inner periphery of the ball bearing support wall 11a of the mission case 11. Match.

その結果、オイルガイドカラー１８は腕部２０，２０と回り止め凹部１１ｄ，１１ｄとの嵌合によりミッションケース１１に対して回り止めされ、かつボールベアリング１３のアウターレース１３は係止凹部１３ａ，１３ａと係止突起２０ａ，２０ａとの嵌合によりオイルガイドカラー１８に対して回り止めされる。これにより、ボールベアリング１６のアウターレース１３を回り止めする特別の回り止め部材が不要になり、部品点数の削減に寄与することができる。   As a result, the oil guide collar 18 is prevented from rotating with respect to the transmission case 11 by the fitting of the arm portions 20 and 20 and the rotation preventing recesses 11d and 11d, and the outer race 13 of the ball bearing 13 is locked to the locking recesses 13a and 13a. And the locking projections 20a, 20a are prevented from rotating with respect to the oil guide collar 18. This eliminates the need for a special anti-rotation member that stops the outer race 13 of the ball bearing 16 and contributes to a reduction in the number of components.

その際に、オイルガイドカラー１８は筒状部１９から相互に離反する方向に延びる一対の腕部２０，２０を備え、一対の腕部２０，２０の先端にそれぞれ係止突起２０ａ，２０ａを設けたので、オイルガイドカラー１８およびボールベアリング１６のアウターレース１３を変速シャフト１２の軸線を挟む二つの位置で固定することで、オイルガイドカラー１８およびボールベアリング１６に偏荷重が作用するのを防止することができる。   At that time, the oil guide collar 18 includes a pair of arm portions 20 and 20 extending in a direction away from the cylindrical portion 19, and locking projections 20 a and 20 a are provided at the tips of the pair of arm portions 20 and 20, respectively. Therefore, by fixing the oil guide collar 18 and the outer race 13 of the ball bearing 16 at two positions sandwiching the axis of the transmission shaft 12, it is possible to prevent an uneven load from acting on the oil guide collar 18 and the ball bearing 16. be able to.

第２の実施の形態Second embodiment

次に、図４に基づいて本発明の第２の実施の形態を説明する。   Next, a second embodiment of the present invention will be described with reference to FIG.

第２の実施の形態は、ボールベアリング１６のアウターレース１３の係止凹部１３ａ，１３ａの形状に特徴を有するものである。第１の実施の形態の各係止凹部１３ａは、腕部２０の係止突起２０ａが隙間なく嵌合するように、アウターレース１３の外周面を径方向内向きに凹ませた形状であるため、その係止凹部１３ａの三つの面が交わる隅部を機械加工するための加工コストが嵩む問題がある。   The second embodiment is characterized by the shapes of the locking recesses 13a and 13a of the outer race 13 of the ball bearing 16. Each locking recess 13a of the first embodiment has a shape in which the outer peripheral surface of the outer race 13 is recessed radially inward so that the locking protrusions 20a of the arm portion 20 are fitted without gaps. There is a problem that the processing cost for machining the corner where the three surfaces of the locking recess 13a intersect increases.

それに対し、第２の実施の形態の係止凹部１３ａは、アウターレース１３の外周面を接線方向と平行に切断したＬ字状断面の溝で構成される。この係止凹部１３ａは機械加工が面倒な隅部を持たないために加工コストを大幅に削減することができる。尚、係止突起２０ａは係止凹部１３ａの中央部だけに係合し、その両側に空間が形成されるが、係止突起２０ａでアウターレース１３を回り止めする機能には影響がない。   On the other hand, the locking recess 13a of the second embodiment is configured by a groove having an L-shaped cross section obtained by cutting the outer peripheral surface of the outer race 13 in parallel to the tangential direction. Since the locking recess 13a does not have a corner that is troublesome to machine, the processing cost can be greatly reduced. The locking projection 20a engages only with the central portion of the locking recess 13a, and spaces are formed on both sides thereof, but the function of preventing the outer race 13 from being rotated by the locking projection 20a is not affected.

以上、本発明の実施の形態を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。   The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

例えば、実施の形態ではオイルガイドカラー１８が２個の腕部２０，２０を備えているが、腕部２０の数は任意であり、また腕部２０の形状も任意である。   For example, in the embodiment, the oil guide collar 18 includes the two arm portions 20 and 20, but the number of the arm portions 20 is arbitrary, and the shape of the arm portion 20 is also arbitrary.

また本発明のベアリングは実施の形態のボールベアリング１６に限定されず、他種のベアリングであっても良い。   Further, the bearing of the present invention is not limited to the ball bearing 16 of the embodiment, and may be another type of bearing.

また実施の形態ではボールベアリング１６のインナーレース１４が変速ギヤ１７のボス部１７ａを介して変速シャフト１２を支持しているが、ボールベアリング１６のインナーレース１４が直接変速シャフト１２を支持しても良い。   In the embodiment, the inner race 14 of the ball bearing 16 supports the transmission shaft 12 via the boss portion 17 a of the transmission gear 17. However, even if the inner race 14 of the ball bearing 16 directly supports the transmission shaft 12. good.

またオイルガイドカラー１８を介して供給されるオイルは潤滑油に限定されず、作動油であっても良い。   The oil supplied via the oil guide collar 18 is not limited to lubricating oil, and may be hydraulic oil.

１１ ミッションケース
１１ｃ 油路
１１ｄ 回り止め凹部
１２ 変速シャフト
１２ａ 第２環状溝
１２ｄ 第２貫通孔
１２ｅ 第１油路（油路）
１３ａ 係止凹部
１６ ボールベアリング（ベアリング）
１８ オイルガイドカラー
１９ 筒状部
１９ａ 第１環状溝
１９ｄ 第１貫通孔
２０ 腕部
２０ａ 係止突起
２１ 第１シール部材
２２ 第２シール部材
２３ 第３シール部材
２４ 第４シール部材 11 Transmission case 11c Oil passage 11d Non-rotating recess 12 Transmission shaft 12a Second annular groove 12d Second through hole 12e First oil passage (oil passage)
13a Locking recess 16 Ball bearing (bearing)
18 Oil guide collar 19 Tubular portion 19a First annular groove 19d First through hole 20 Arm portion 20a Locking protrusion 21 First seal member 22 Second seal member 23 Third seal member 24 Fourth seal member

Claims (3)

変速シャフト（１２）の軸端をミッションケース（１１）にベアリング（１６）を介して支持した変速機において、
前記ミッションケース（１１）に固定されて該ミッションケース（１１）に形成した油路（１１ｃ）から前記変速シャフト（１２）の内部に形成した油路（１２ｅ）にオイルを供給するオイルガイドカラー（１８）を備え、
前記オイルガイドカラー（１８）は、前記変速シャフト（１２）の軸端の外周に嵌合する筒状部（１９）と、前記筒状部（１９）から径方向外側に延びて前記ミッションケース（１１）に形成した回り止め凹部（１１ｄ）に嵌合する腕部（２０）とを備え、前記腕部（２０）の先端に設けた係止突起（２０ａ）を前記ベアリング（１６）に設けた係止凹部（１３ａ）に係合させたことを特徴とする、変速機におけるベアリングの回り止め構造。 In the transmission in which the shaft end of the transmission shaft (12) is supported on the transmission case (11) via the bearing (16),
An oil guide collar (supplied with oil) from an oil passage (11c) fixed to the transmission case (11) to an oil passage (12e) formed inside the transmission shaft (12). 18)
The oil guide collar (18) includes a cylindrical portion (19) fitted to the outer periphery of the shaft end of the transmission shaft (12), and extends radially outward from the cylindrical portion (19) to the transmission case ( 11) and a locking projection (20a) provided at the tip of the arm (20). The locking projection (20a) is provided on the bearing (16). A bearing detent structure in a transmission, characterized by being engaged with a locking recess (13a). 前記オイルガイドカラー（１８）は前記筒状部（１９）から相互に離反する方向に延びる一対の前記腕部（２０）を備え、前記一対の腕部（２０）の先端にそれぞれ前記係止突起（２０ａ）を設けたことを特徴とする、請求項１に記載の変速機におけるベアリングの回り止め構造。   The oil guide collar (18) includes a pair of arm portions (20) extending in a direction away from the cylindrical portion (19), and the locking protrusions are respectively provided at the ends of the pair of arm portions (20). The bearing detent structure in a transmission according to claim 1, wherein (20a) is provided. 前記オイルガイドカラー（１８）は、前記筒状部（１９）の外周に形成されて軸方向両側を第１、第２シール部材（２１，２２）に挟まれた第１環状溝（１９ａ）と、前記第１環状溝（１９ａ）内で前記筒状部（１９）を径方向に貫通する第１貫通孔（１９ｄ）とを備え、
前記変速シャフト（１２）は、該変速シャフト（１２）の外周に形成されて軸方向両側を第３、第４シール部材（２３，２４）に挟まれた第２環状溝（１２ａ）と、前記第２環状溝（１２ａ）内で該変速シャフト（１２）を径方向に貫通する第２貫通孔（１２ｄ）とを備え、
前記ミッションケース（１１）の油路（１１ｃ）は、前記第１環状溝（１９ａ）、前記第１貫通孔（１９ｄ）、前記第２環状溝（１２ａ）および前記第２貫通孔（１２ｄ）を介して前記変速シャフト（１２）の油路（１２ｅ）に連通することを特徴とする、請求項１または請求項２に記載の変速機におけるベアリングの回り止め構造。 The oil guide collar (18) includes a first annular groove (19a) formed on the outer periphery of the cylindrical portion (19) and sandwiched on both axial sides by first and second seal members (21, 22). A first through hole (19d) penetrating the cylindrical portion (19) in the radial direction in the first annular groove (19a),
The transmission shaft (12) includes a second annular groove (12a) formed on an outer periphery of the transmission shaft (12) and sandwiched between the third and fourth seal members (23, 24) on both axial sides. A second through hole (12d) penetrating the speed change shaft (12) in the radial direction in the second annular groove (12a),
The oil passage (11c) of the transmission case (11) includes the first annular groove (19a), the first through hole (19d), the second annular groove (12a), and the second through hole (12d). The bearing rotation-preventing structure in the transmission according to claim 1 or 2, characterized in that it communicates with an oil passage (12e) of the transmission shaft (12) through a transmission line.
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CN111981047A (en) * 2020-09-07 2020-11-24 天津英创汇智汽车技术有限公司 Axial limiting method for inner ring and outer ring of gear bearing of electronic brake booster unit
JP2021071125A (en) * 2019-10-29 2021-05-06 スズキ株式会社 Transmission lubrication structure

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CN111981047A (en) * 2020-09-07 2020-11-24 天津英创汇智汽车技术有限公司 Axial limiting method for inner ring and outer ring of gear bearing of electronic brake booster unit

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