JP6459067B2

JP6459067B2 - Rotating member support shaft

Info

Publication number: JP6459067B2
Application number: JP2015192720A
Authority: JP
Inventors: 康信濱田; 豊小野; 堤　幸一; 幸一堤
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2019-01-30
Anticipated expiration: 2035-09-30
Also published as: JP2017066962A

Description

この発明は、潤滑油の導入路を内部に有する回転部材の支持シャフトに関するものである。 The present invention relates to a support shaft for a rotating member having an introduction passage for lubricating oil therein.

内燃機関のギヤ機構やスプロケットの支持等に用いられる支持シャフトとして、潤滑油の導入路が内部に設けられたものが知られている（特許文献１参照）。 2. Description of the Related Art As a support shaft used for supporting a gear mechanism of an internal combustion engine, a sprocket, or the like, a shaft having a lubricating oil introduction path provided therein is known (see Patent Document 1).

特許文献１に記載の支持シャフトは、内燃機関のシリンダヘッドに取り付けられ、軸部の外周面に、回転部材であるスプロケットがニードル軸受を介して支持されている。また、支軸シャフトは内部が中空構造とされ、軸部の周壁に潤滑油の流入口と供給口とが形成されている。流入口は、内燃機関のカム室内の潤滑油通路に接続され、支持シャフトの内部の中空部に潤滑油を導入するようになっている。また、供給口は、支持シャフトの軸受支持部の近傍に開口しており、中空部内の潤滑油をニードル軸受に供給するようになっている。 The support shaft described in Patent Document 1 is attached to a cylinder head of an internal combustion engine, and a sprocket that is a rotating member is supported on a peripheral surface of a shaft portion via a needle bearing. Further, the inside of the support shaft has a hollow structure, and an inflow port and a supply port for lubricating oil are formed in the peripheral wall of the shaft portion. The inflow port is connected to a lubricating oil passage in the cam chamber of the internal combustion engine, and introduces lubricating oil into a hollow portion inside the support shaft. Further, the supply port is opened in the vicinity of the bearing support portion of the support shaft, and the lubricating oil in the hollow portion is supplied to the needle bearing.

特許第４２３４０１５号公報Japanese Patent No. 4234015

上記従来の支持シャフトにおいては、軸部の内部が中空構造とされ、軸部内の中空部分を通して潤滑必要部位（軸部の外周のニードル軸受）に潤滑油を供給する構造とされている。しかし、潤滑必要部位が支持シャフト上の複数箇所に有る場合には、支持シャフト内の中空部容積を大きく確保したうえで、支持シャフト上に供給口を多数箇所に形成しなければならない。このため、上記従来の支持シャフトにおいては、軸部内の中空部を高圧の潤滑油で満たすために多量の潤滑油を支持シャフトに供給しなければならない。また、上記従来の支持シャフトにおいては、潤滑油の経路中に容積の大きい潤滑油の滞留部が配置されることになるため、潤滑油の供給系に油圧変動を生じることが懸念される。 In the conventional support shaft, the inside of the shaft portion has a hollow structure, and the lubricating oil is supplied to a portion requiring lubrication (a needle bearing on the outer periphery of the shaft portion) through a hollow portion in the shaft portion. However, when there are a plurality of portions requiring lubrication on the support shaft, it is necessary to ensure a large volume of the hollow portion in the support shaft and to form supply ports on the support shaft at many locations. For this reason, in the conventional support shaft, a large amount of lubricating oil must be supplied to the support shaft in order to fill the hollow portion in the shaft portion with high-pressure lubricating oil. Further, in the conventional support shaft described above, a large-volume lubricating oil staying part is disposed in the lubricating oil path, so there is a concern that hydraulic pressure fluctuations may occur in the lubricating oil supply system.

そこでこの発明は、供給する潤滑油量の削減と、潤滑油の供給系の油圧変動の抑制を図ることができる回転部材の支持シャフトを提供しようとするものである。 Accordingly, the present invention is intended to provide a support shaft for a rotating member capable of reducing the amount of lubricating oil to be supplied and suppressing oil pressure fluctuations in the lubricating oil supply system.

この出願の一の発明に係る回転部材の支持シャフトは、上記課題を解決するために、潤滑油の導入路（２２）を内部に有するとともに、前記導入路（２２）から潤滑必要部位に潤滑油を供給する供給口（２８，２６，２４，２３，２９，２７）を有する回転部材（１２）の支持シャフトにおいて、内部に中空部（１８ｃ）を有するとともに、前記回転部材（１２）を回転自在に支持する支持面（１８ａ−１）を有するシャフト本体（１８）と、少なくとも一部が前記中空部（１８ｃ）の内側に配置されるように前記シャフト本体（１８）に組み付けられ、前記シャフト本体（１８）との間で前記導入路（２２）を形成する隔壁部材（１９）と、を備え、前記隔壁部材（１９）は、前記導入路（２２）から隔離された隔離室（３３）を内部に有し、前記シャフト本体（１８）の軸方向両側の外周面は、支持部材（７Ａ）に摺動自在に支持される被支持面（１８ａ−２，１８ａ−３）とされ、前記供給口（２８，２６，２４，２３，２９，２７）は、前記支持面（１８ａ−１）に臨む位置と、前記シャフト本体（１８）の前記被支持面（１８ａ−２，１８ａ−３）に臨む位置とに設けられている。 In order to solve the above problems, a support shaft for a rotating member according to one aspect of the present application has a lubricating oil introduction path (22) therein, and a lubricating oil is provided from the introduction path (22) to a lubrication required portion. The support shaft of the rotating member (12) having the supply port (28, 26, 24, 23, 29, 27) for supplying the air has a hollow portion (18c) inside, and the rotating member (12) is rotatable. A shaft body (18) having a support surface (18a-1) for supporting the shaft body, and being assembled to the shaft body (18) so that at least a part thereof is disposed inside the hollow portion (18c). (18) and a partition member (19) that forms the introduction path (22) with the partition wall member (19) having an isolation chamber (33) isolated from the introduction path (22). Yes inside The outer peripheral surfaces on both axial sides of the shaft body (18) are supported surfaces (18a-2, 18a-3) slidably supported by the support member (7A), and the supply ports (28, 26, 24, 23, 29, 27) are located at a position facing the support surface (18a-1) and at a position facing the supported surface (18a-2, 18a-3) of the shaft body (18). Is provided .

上記の構成により、隔壁部材（１９）がシャフト本体（１８）に組み付けられると、シャフト本体（１８）と隔壁部材（１９）の間に潤滑油の導入路（２２）が形成される。導入路（２２）に導入された潤滑油は供給口（２８，２６，２４，２３，２９，２７）を通って潤滑必要部位に供給される。導入路（２２）は、シャフト本体（１８）と、少なくとも一部がその内部に配置される隔壁部材（１９）との間に形成されている。このため、導入路（２２）の容積は、中空部（１８ｃ）に挿入されている隔壁部材（１９）の外面の容積分だけ中空部（１８ｃ）の容積よりも小さくなる。このため、導入路（２２）をシャフト本体（１８）内の広い範囲に形成しつつも、導入路（２２）を満たすための潤滑油量を削減することができる。また、隔壁部材（１９）の内部には導入路（２２）から隔離された隔離室（３３）が形成されているため、隔壁部材（１９）による重量増加を抑制することができる。 With the above configuration, when the partition wall member (19) is assembled to the shaft body (18), a lubricating oil introduction path (22) is formed between the shaft body (18) and the partition wall member (19). The lubricating oil introduced into the introduction path (22) is supplied to the lubrication-needed portion through the supply port (28, 26, 24, 23, 29, 27). The introduction path (22) is formed between the shaft body (18) and the partition member (19) at least partially disposed therein. For this reason, the volume of the introduction path (22) becomes smaller than the volume of the hollow part (18c) by the volume of the outer surface of the partition member (19) inserted in the hollow part (18c). For this reason, the amount of lubricating oil for filling the introduction path (22) can be reduced while forming the introduction path (22) in a wide range in the shaft body (18). Moreover, since the isolation | separation chamber (33) isolated from the introduction path (22) is formed in the inside of a partition member (19), the weight increase by a partition member (19) can be suppressed.

また、この場合、導入路（２２）に潤滑油が導入されると、その潤滑油は、供給口（２８，２６，２４，２３，２９，２７）を通して、回転部材（１２）と支持面（１８ａ−１）の間に供給されるとともに、シャフト本体（１８）の被支持面（１８ａ−２，１８ａ−３）と支持部材（７Ａ）との間の摺動部に供給されるようになる。 Further, in this case, when the lubricating oil is introduced into the introduction path (22), the lubricating oil passes through the supply port (28, 26, 24, 23, 29, 27) and the rotating member (12) and the support surface ( 18a-1) and supplied to the sliding portion between the supported surface (18a-2, 18a-3) of the shaft body (18) and the support member (7A). .

前記シャフト本体（１８）の軸方向の端面は、支持部材（７Ｂ，７Ａ）の軸方向の位置規制部（７Ｂ−ａ，１６ａ）に対向する規制面（１８ｄ，１８ｅ）とされ、前記供給口は、前記シャフト本体（１８）の前記規制面（１８ｄ，１８ｅ）に臨む位置に設けられるようにしても良い。
この場合、導入路（２２）に潤滑油が導入されると、その潤滑油は、シャフト本体（１８）の軸方向の端面である規制面（１８ｄ，１８ｅ）と、支持部材（７Ｂ，７Ａ）の位置規制部（７Ｂ−ａ，１６ａ）との間に供給されるようになる。 The axial end surface of the shaft body (18) is a restricting surface (18d, 18e) facing the axial position restricting portion (7B-a, 16a) of the support member (7B, 7A), and the supply port May be provided at a position facing the restriction surface (18d, 18e) of the shaft body (18).
In this case, when the lubricating oil is introduced into the introduction path (22), the lubricating oil includes the regulating surface (18d, 18e) which is the axial end surface of the shaft body (18) and the support member (7B, 7A). To the position regulating portion (7B-a, 16a).

この出願の他の発明に係る回転部材の支持シャフトは、上記課題を解決するために、潤滑油の導入路（２２）を内部に有するとともに、前記導入路（２２）から潤滑必要部位に潤滑油を供給する供給口（２８，２６，２４，２３，２９，２７）を有する回転部材（１２）の支持シャフトにおいて、内部に中空部（１８ｃ）を有するとともに、前記回転部材（１２）を回転自在に支持する支持面（１８ａ−１）を有するシャフト本体（１８）と、少なくとも一部が前記中空部（１８ｃ）の内側に配置されるように前記シャフト本体（１８）に組み付けられ、前記シャフト本体（１８）との間で前記導入路（２２）を形成する隔壁部材（１９）と、を備え、前記隔壁部材（１９）は、前記導入路（２２）から隔離された隔離室（３３）を内部に有し、前記シャフト本体（１８）は、円筒壁（１８ａ）と底壁（１８ｂ）とを有する有底円筒状に形成され、前記隔壁部材（１９）は、前記シャフト本体（１８）の前記円筒壁（１８ａ）の内側に配置され、前記隔壁部材（１９）の軸方向の両側の縁部と前記円筒壁（１８ａ）の内周面との間には、前記隔壁部材（１９）と前記シャフト本体（１８）の間を液密に密閉するシール部材（３５Ａ，３５Ｂ）が配置され、前記シャフト本体（１８）の前記円筒壁（１８ａ）の内周面と、前記隔壁部材（１９）の外周面と、前記シール部材（３５Ａ，３５Ｂ）とによって囲まれた空間によって前記導入路（２２）が構成されるようにした。
この場合、軸方向の両側をシール部材（３５Ａ，３５Ｂ）によって密閉された状態において、シャフト本体（１８）の円筒壁（１８ａ）と隔壁部材（１９）の間にできる空間によって導入路（２２）が構成されるため、部材間の隙間を利用して導入路（２２）を容易に形成することができる。 In order to solve the above-mentioned problem, the support shaft of the rotating member according to another invention of this application has a lubricating oil introduction passage (22) inside, and the lubricating oil is provided from the introduction passage (22) to the lubrication required portion. The support shaft of the rotating member (12) having the supply port (28, 26, 24, 23, 29, 27) for supplying the air has a hollow portion (18c) inside, and the rotating member (12) is rotatable. A shaft body (18) having a support surface (18a-1) for supporting the shaft body, and being assembled to the shaft body (18) so that at least a part thereof is disposed inside the hollow portion (18c). (18) and a partition member (19) that forms the introduction path (22) with the partition wall member (19) having an isolation chamber (33) isolated from the introduction path (22). Inside The shaft body (18) is formed in a bottomed cylindrical shape having a cylindrical wall and (18a) and a bottom wall (18b), the partition member (19), said shaft said cylindrical wall of the body (18) ( 18a), the partition wall member (19) and the shaft main body (19) between the edge on both sides in the axial direction of the partition wall member (19) and the inner peripheral surface of the cylindrical wall (18a). 18) a seal member (35A, 35B) is provided for liquid-tightly sealing the space between the inner peripheral surface of the cylindrical wall (18a) of the shaft body (18), and the outer peripheral surface of the partition wall member (19). The introduction path (22) is configured by a space surrounded by the seal members (35A, 35B) .
In this case, the introduction path (22) is formed by a space formed between the cylindrical wall (18a) of the shaft body (18) and the partition wall member (19) in a state where both sides in the axial direction are sealed by the seal members (35A, 35B). Therefore, the introduction path (22) can be easily formed using the gap between the members.

前記隔壁部材（１９）の軸方向の両側の縁部の外周面には、前記シール部材（３５Ａ，３５Ｂ）が嵌合される嵌合溝（３４Ａ，４７）が形成されており、前記隔壁部材（１９）の軸方向の一端面には、前記シャフト本体（１８）の前記円筒壁（１８ａ）の内側において前記底壁（１８ｂ）に突き当てられる突き当て部（３０ａ）が設けられるようにしても良い。
この場合、シャフト本体（１８）に隔壁部材（１９）を組み付けるときには、隔壁部材（１９）の軸方向の両側の嵌合溝（３４Ａ，４７）にシール部材（３５Ａ，３５Ｂ）を嵌合し、その状態において隔壁部材（１９）を軸方向の一端側からシャフト本体（１８）の円筒壁（１８ａ）内に挿入する。隔壁部材（１９）は、軸方向の一端側の突き当て部（３０ａ）がシャフト本体（１８）の底壁（１８ｂ）に突き当たるまで、円筒壁（１８ａ）内に挿入される。こうして、隔壁部材（１９）がシャフト本体（１８）に組み付けられると、隔壁部材（１９）上に保持されている各シール部材（３５Ａ，３５Ｂ）は円筒壁（１８ａ）内の一定位置に当接することになる。したがって、この構造を採用することにより、シャフト本体（１８）に対する隔壁部材（１９）の組み付けを容易に、かつ正確に行うことができる。 Fitting grooves (34A, 47 ) into which the seal members (35A, 35B) are fitted are formed on the outer peripheral surfaces of the edges on both sides in the axial direction of the partition member (19), and the partition member An abutting portion (30a) that abuts against the bottom wall (18b) on the inner side of the cylindrical wall (18a) of the shaft body (18) is provided on one end surface in the axial direction of (19). Also good.
In this case, when the partition member (19) is assembled to the shaft body (18), the sealing members (35A, 35B) are fitted into the fitting grooves (34A, 47 ) on both sides in the axial direction of the partition member (19), In this state, the partition member (19) is inserted into the cylindrical wall (18a) of the shaft body (18) from one end side in the axial direction. The partition member (19) is inserted into the cylindrical wall (18a) until the abutting portion (30a) on one end side in the axial direction abuts against the bottom wall (18b) of the shaft body (18). Thus, when the partition member (19) is assembled to the shaft main body (18), the seal members (35A, 35B) held on the partition member (19) abut on a fixed position in the cylindrical wall (18a). It will be. Therefore, by adopting this structure, the partition member (19) can be easily and accurately assembled to the shaft body (18).

前記隔壁部材（１９）は、軸方向の一端側に前記突き当て部（３０ａ）を有する第１隔壁部材（３０）と、前記第１隔壁部材（３０）の軸方向の他端部に突き当てられて組み付けられる第２隔壁部材（３１）と、を有し、前記第２隔壁部材（３１）は、前記第１隔壁部材（３０）の突き当て部（３０ａ）を前記シャフト本体（１８）の前記底壁（１８ｂ）に突き当てた状態において、前記シャフト本体（１８）の前記円筒壁（１８ａ）に嵌合固定されるようにしても良い。
この場合、シャフト本体（１８）に第１隔壁部材（３０）と第２隔壁部材（３１）を組み付けるときには、第１隔壁部材（３０）の軸方向の他端部に第２隔壁部材（３１）を突き当てて組み付け、その状態において第１隔壁部材（３０）と第２隔壁部材（３１）をシャフト本体（１８）の円筒壁（１８ａ）内に挿入する。こうして第１隔壁部材（３０）と第２隔壁部材（３１）が円筒壁（１８ａ）内に所定量挿入されると、第１隔壁部材（３０）の軸方向の一端の突き当て部（３０ａ）がシャフト本体（１８）の底壁（１８ｂ）に突き当たり、第２隔壁部材（３１）がシャフト本体（１８）の円筒壁（１８ａ）に嵌合固定される。この結果、第１隔壁部材（３０）は、シャフト本体（１８）の底壁（１８ｂ）と第２隔壁部材（３１）に挟み込まれた状態において、シャフト本体（１８）内に固定される。したがって、この構造を採用することにより、特別な固定手段を用いることなく、第１隔壁部材（３０）をシャフト本体（１８）内に固定することができる。 The partition member (19) abuts against the first partition member (30) having the abutting portion (30a) on one end side in the axial direction and the other end portion in the axial direction of the first partition member (30). A second partition wall member (31) assembled and assembled, wherein the second partition wall member (31) has an abutting portion (30a) of the first partition wall member (30) disposed on the shaft body (18). You may make it fit and fix to the said cylindrical wall (18a) of the said shaft main body (18) in the state which contact | abutted to the said bottom wall (18b).
In this case, when the first partition member (30) and the second partition member (31) are assembled to the shaft body (18), the second partition member (31) is disposed at the other axial end of the first partition member (30). In this state, the first partition member (30) and the second partition member (31) are inserted into the cylindrical wall (18a) of the shaft body (18). When the first partition member (30) and the second partition member (31) are thus inserted into the cylindrical wall (18a) by a predetermined amount, the abutting portion (30a) at one end in the axial direction of the first partition member (30). Hits the bottom wall (18b) of the shaft body (18), and the second partition member (31) is fitted and fixed to the cylindrical wall (18a) of the shaft body (18). As a result, the first partition member (30) is fixed in the shaft body (18) while being sandwiched between the bottom wall (18b) of the shaft body (18) and the second partition member (31). Therefore, by adopting this structure, the first partition member (30) can be fixed in the shaft body (18) without using any special fixing means.

前記第２隔壁部材（３１）には、前記導入路（２２）を、軸方向の他端面に導通させる前記供給口が形成されており、当該供給口は、その主要部が第２隔壁部材（３１）内に軸方向に沿って延在する軸孔部（４９）によって構成されるようにしても良い。
この場合、導入路（２２）に導入された潤滑油は、第２隔壁部材（３１）に形成された供給口を通して第２隔壁部材（３１）の軸方向の他端面に供給される。この結果、支持シャフト（１１）の軸方向の他端面と、支持部材（７Ａ）の対向部との間に潤滑油を供給することが可能になる。また、第２隔壁部材（３１）に形成された供給口は、その主要部が第２隔壁部材（３１）内に軸方向に沿って延在する軸孔部（４９）によって構成されているため、導入路（２２）と第２隔壁部材（３１）の軸方向の他端面とを短い経路によって連通させることができる。 The second partition member (31) is formed with the supply port for conducting the introduction path (22) to the other end surface in the axial direction, and the supply port has a main portion as a second partition member ( 31) may be constituted by an axial hole portion (49) extending along the axial direction.
In this case, the lubricating oil introduced into the introduction passage (22) is supplied to the other end surface in the axial direction of the second partition member (31) through a supply port formed in the second partition member (31). As a result, it becomes possible to supply lubricating oil between the other end surface of the support shaft (11) in the axial direction and the facing portion of the support member (7A). Moreover, since the main part of the supply port formed in the 2nd partition member (31) is comprised by the axial hole part (49) extended along an axial direction in the 2nd partition member (31). The introduction path (22) and the other end surface in the axial direction of the second partition wall member (31) can be communicated with each other through a short path.

前記第１隔壁部材（３０）は略筒状に形成され、前記第１隔壁部材（３０）の内周側には、第３隔壁部材（３２）が組み付けられ、前記第１隔壁部材（３０）と前記第３隔壁部材（３２）との間に、前記導入路（２２）に連通する第２導入路（４３）が構成されるようにしても良い。
この場合、第１隔壁部材（３０）と、その内側に配置される第３隔壁部材（３２）との間に第２導入路（４３）が構成されているため、第２導入路（４３）を通して支持シャフト（１１）回りの潤滑必要部位に潤滑油を供給することが可能になる。 The first partition member (30) is formed in a substantially cylindrical shape, and a third partition member (32) is assembled on the inner peripheral side of the first partition member (30), and the first partition member (30). A second introduction path (43) communicating with the introduction path (22) may be formed between the first partition wall member (32) and the third partition wall member (32).
In this case, since the 2nd introduction way (43) is constituted between the 1st partition member (30) and the 3rd partition member (32) arranged inside, the 2nd introduction way (43) Through this, it becomes possible to supply the lubricating oil to a portion requiring lubrication around the support shaft (11).

前記第３隔壁部材（３２）の軸方向の一端部は、前記第１隔壁部材（３０）を軸方向に貫通して前記シャフト本体（１８）の前記底壁（１８ｂ）に当接可能とされており、前記第３隔壁部材（３２）の軸方向の一端面には、前記第２導入路（４３）に連通する底部溝（４４）が形成され、前記シャフト本体（１８）の前記底壁（１８ｂ）のうちの前記底部溝（４４）に臨む位置には、前記底壁（１８ｂ）を貫通して、前記第２導入路（４３）内の潤滑油を前記シャフト本体（１８）の軸方向の一端面と支持部材（７Ｂ）の間に導入する貫通孔（４５）が形成されるようにしても良い。
この場合、導入路（２２）から第２導入路（４３）に導入された潤滑油は、第３隔壁部材（３２）の軸方向の一端面に形成されている底部溝（４４）を通り、さらにシャフト本体（１８）の底壁（１８ｂ）の貫通孔（４５）を通ってシャフト本体（１８）の軸方向の一端面と支持部材（７Ｂ）の間に供給される。 One end of the third partition member (32) in the axial direction can pass through the first partition member (30) in the axial direction and abut on the bottom wall (18b) of the shaft body (18). A bottom groove (44) communicating with the second introduction path (43) is formed on one axial end surface of the third partition member (32), and the bottom wall of the shaft body (18) is formed. In the position facing the bottom groove (44) of (18b), the lubricating oil in the second introduction path (43) passes through the bottom wall (18b) and is shaft of the shaft body (18). A through hole (45) to be introduced between the one end surface in the direction and the support member (7B) may be formed.
In this case, the lubricating oil introduced from the introduction path (22) to the second introduction path (43) passes through the bottom groove (44) formed on one end surface in the axial direction of the third partition wall member (32), Furthermore, it passes through the through-hole (45) of the bottom wall (18b) of the shaft body (18) and is supplied between one end surface of the shaft body (18) in the axial direction and the support member (7B).

この発明によれば、内部に隔離室を有する隔壁部材の少なくとも一部がシャフト本体の中空部内に配置され、シャフト本体と隔壁部材の間に潤滑油の導入路が形成されているため、重量の増加を招くことなく、シャフト本体内の導入路の容積を減少させることができる。したがって、この発明によれば、導入路を満たすための潤滑油量の削減と、潤滑油の供給系の油圧変動の抑制を図ることができる。 According to the present invention, at least a part of the partition member having the isolation chamber inside is disposed in the hollow portion of the shaft body, and the introduction path of the lubricating oil is formed between the shaft body and the partition member. The volume of the introduction path in the shaft body can be reduced without causing an increase. Therefore, according to the present invention, it is possible to reduce the amount of lubricating oil for satisfying the introduction path and to suppress the fluctuation of hydraulic pressure in the lubricating oil supply system.

この発明の一実施形態に係る支持シャフトを採用する内燃機関の模式的な側面図である。1 is a schematic side view of an internal combustion engine that employs a support shaft according to an embodiment of the present invention. この発明の一実施形態に係る支持シャフトを採用する内燃機関の一部の断面図である。1 is a cross-sectional view of a part of an internal combustion engine that employs a support shaft according to an embodiment of the present invention. この発明の一実施形態に係る回転部材の断面図である。It is sectional drawing of the rotating member which concerns on one Embodiment of this invention. この発明の一実施形態に係る支持シャフトの構成部品の断面図である。It is sectional drawing of the component of the support shaft which concerns on one Embodiment of this invention. この発明の一実施形態に係る支持シャフトの構成部品の図６のＶ−Ｖ線に沿う断面図である。It is sectional drawing which follows the VV line | wire of FIG. 6 of the component of the support shaft which concerns on one Embodiment of this invention. この発明の一実施形態に係る支持シャフトの構成部品の正面図である。It is a front view of the component of the support shaft which concerns on one Embodiment of this invention. この発明の一実施形態に係る支持シャフトの構成部品の図８のＶＩＩ−ＶＩＩ線に沿う断面図である。It is sectional drawing which follows the VII-VII line of FIG. 8 of the component of the support shaft which concerns on one Embodiment of this invention. この発明の一実施形態に係る支持シャフトの構成部品の正面図である。It is a front view of the component of the support shaft which concerns on one Embodiment of this invention. この発明の一実施形態に係る支持シャフトの構成部品の断面図である。It is sectional drawing of the component of the support shaft which concerns on one Embodiment of this invention.

以下、この発明の一実施形態を図面に基づいて説明する。なお、図面において、矢印ＦＲは、車両搭載状態での内燃機関１の前方を指し、矢印ＵＰと矢印ＬＨは、車両搭載状態での内燃機関１の上方と左側方とを指す。
図１は、この実施形態に係る支持シャフト１１を採用する内燃機関１の右側面を模式的に示す図である。
図１に示す内燃機関１は、自動二輪車に搭載されるエンジンであり、シリンダ部２がクランク軸３を中心として略Ｖ字型に配置される所謂Ｖ型のエンジンである。内燃機関１のクランク軸３の軸方向の一端部には、プライマリドライブギヤ４が取り付けられている。プライマリドライブギヤ４にはプライマリドリブンギヤ５が噛合されている。この内燃機関１では、クランク軸３の回転動力が、プライマリドライブギヤ４とプライマリドリブンギヤ５を介して変速機６に入力される。また、内燃機関１のクランクケース７には、機関始動用のモータ８が設置されている。モータ８に取り付けられたモータ歯車８ａは、減速機構９とワンエゥイクラッチ１０を介して、クランク軸３（プライマリドライブギヤ４）に対して動力伝達可能とされている。
この実施形態に係る支持シャフト１１は、例えば、減速機構９の歯車を回転可能に支持するシャフトとして用いられる。ただし、支持シャフト１１の適用部位は、減速機構９の歯車支持部に限るものでなく、他の部位の歯車支持部やスプロケット支持部等にも適用することができる。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, an arrow FR indicates the front of the internal combustion engine 1 in the vehicle mounted state, and an arrow UP and an arrow LH indicate the upper side and the left side of the internal combustion engine 1 in the vehicle mounted state.
FIG. 1 is a diagram schematically showing a right side surface of an internal combustion engine 1 that employs a support shaft 11 according to this embodiment.
An internal combustion engine 1 shown in FIG. 1 is an engine mounted on a motorcycle, and is a so-called V-type engine in which a cylinder portion 2 is arranged in a substantially V shape around a crankshaft 3. A primary drive gear 4 is attached to one axial end portion of the crankshaft 3 of the internal combustion engine 1. A primary driven gear 5 is meshed with the primary drive gear 4. In the internal combustion engine 1, the rotational power of the crankshaft 3 is input to the transmission 6 via the primary drive gear 4 and the primary driven gear 5. An engine starting motor 8 is installed in the crankcase 7 of the internal combustion engine 1. The motor gear 8 a attached to the motor 8 can transmit power to the crankshaft 3 (primary drive gear 4) via the speed reduction mechanism 9 and the one-way clutch 10.
The support shaft 11 according to this embodiment is used as, for example, a shaft that rotatably supports a gear of the speed reduction mechanism 9. However, the application part of the support shaft 11 is not limited to the gear support part of the speed reduction mechanism 9 but can be applied to a gear support part, a sprocket support part, or the like of another part.

図２は、クランクケース７内の支持シャフト１１の設置部を、支持シャフト１１の軸方向に沿うように断面にして示した図である。
クランクケース７は、支持シャフト１１を支持する第１ブロック７Ａと第２ブロック７Ｂとを有している。第１ブロック７Ａは、支持シャフト１１に支持される歯車１２（回転部材）が配置される歯車収容部２１を有している。歯車収容部２１は、第１ブロック７Ａのブロック本体部７Ａ−ａの端面と、そのブロック本体部７Ａ−ａの端面に対向して配置される支持ブロック部７Ａ−ｂとに囲まれて構成されている。第２ブロック７Ｂは、歯車収容部２１の外側を覆うように、第１ブロック７Ａに結合されている。第２ブロック７Ｂの端面７Ｂ−ａは、第１ブロック７Ａの支持ブロック部７Ａ−ｂの端面に当接している。
なお、この実施形態においては、第１ブロック７Ａに対して第２ブロック７Ｂが突き合わされる側を軸方向の一端側と呼び、その一端側と逆側を軸方向の他端側と呼ぶ。また、この実施形態においては、第１ブロック７Ａと第２ブロック７Ｂが支持シャフト１１を支持する支持部材を構成している。 FIG. 2 is a cross-sectional view of the installation portion of the support shaft 11 in the crankcase 7 along the axial direction of the support shaft 11.
The crankcase 7 has a first block 7A and a second block 7B that support the support shaft 11. The first block 7A has a gear housing portion 21 in which a gear 12 (rotating member) supported by the support shaft 11 is disposed. The gear housing portion 21 is configured to be surrounded by an end surface of the block main body portion 7A-a of the first block 7A and a support block portion 7A-b disposed to face the end surface of the block main body portion 7A-a. ing. The second block 7B is coupled to the first block 7A so as to cover the outer side of the gear housing portion 21. The end surface 7B-a of the second block 7B is in contact with the end surface of the support block portion 7A-b of the first block 7A.
In this embodiment, the side on which the second block 7B is abutted against the first block 7A is referred to as one end side in the axial direction, and the side opposite to the one end side is referred to as the other end side in the axial direction. Further, in this embodiment, the first block 7A and the second block 7B constitute a support member that supports the support shaft 11.

第１ブロック７Ａの支持ブロック部７Ａ−ｂには、支持シャフト１１の軸方向の一端側を支持する支持孔１３が形成され、その支持孔１３の端部が第２ブロック７Ｂの軸方向内側の端面７Ｂ−ａによって閉塞されている。また、第１ブロック７Ａのブロック本体部７Ａ−ａの端面には、支持シャフト１１の軸方向の他端側を支持する支持穴１４が形成されている。支持穴１４は、支持ブロック部７Ａ−ｂの支持孔１３と同軸に形成されている。支持ブロック部７Ａ−ｂの支持孔１３とブロック本体部７Ａ−ａの支持穴１４には、それぞれ銅製のブッシュ１５，１６が圧入固定されている。支持ブロック部７Ａ−ｂに取り付けられるブッシュ１５の軸方向の一端側には外向きのフランジ部１５ａが形成され、ブロック本体部７Ａ−ａに取り付けられるブッシュ１６の軸方向の他端側には、内向きのフランジ部１６ａが形成されている。 A support hole 13 for supporting one end side of the support shaft 11 in the axial direction is formed in the support block portion 7A-b of the first block 7A, and an end portion of the support hole 13 is on the inner side in the axial direction of the second block 7B. It is blocked by the end face 7B-a. A support hole 14 that supports the other end side of the support shaft 11 in the axial direction is formed on the end surface of the block main body portion 7A-a of the first block 7A. The support hole 14 is formed coaxially with the support hole 13 of the support block portion 7A-b. Copper bushes 15 and 16 are press-fitted and fixed in the support holes 13 of the support block portion 7A-b and the support holes 14 of the block body portion 7A-a, respectively. An outward flange portion 15a is formed on one end side in the axial direction of the bush 15 attached to the support block portion 7A-b, and on the other end side in the axial direction of the bush 16 attached to the block main body portion 7A-a, An inward flange portion 16a is formed.

図３は、回転部材である歯車１２の断面を拡大して示した図である。
歯車１２は、円筒状のボス部１２ａの外側に円環状の歯車本体部１２ｂが突設され、歯車本体部１２ｂに複数の歯１２ｂ−１が形成されている。また、歯車１２のボス部１２ａの内周面には、銅製のブッシュ１７が圧入固定されている。歯車１２は、ブッシュ１７を介して、支持シャフト１１上の後述する支持面１８ａ−１に回転自在に支持されるようになっている。 FIG. 3 is an enlarged view of the cross section of the gear 12 that is a rotating member.
The gear 12 has an annular gear body 12b protruding from the outer side of a cylindrical boss 12a, and a plurality of teeth 12b-1 are formed on the gear body 12b. A copper bushing 17 is press-fitted and fixed to the inner peripheral surface of the boss portion 12 a of the gear 12. The gear 12 is rotatably supported by a later-described support surface 18 a-1 on the support shaft 11 via the bush 17.

支持シャフト１１は、有底円筒状のシャフト本体１８と、シャフト本体１８の内部に配置される隔壁部材１９と、を備えている。シャフト本体１８は、円筒壁１８ａと、円筒壁１８ａの軸方向の一端側に一体に形成された底壁１８ｂと、を有している。円筒壁１８ａと底壁１８ｂとに囲まれた凹状の空間部分は、支持シャフト１１の内部の中空部１８ｃを形成している。 The support shaft 11 includes a bottomed cylindrical shaft body 18 and a partition member 19 disposed inside the shaft body 18. The shaft main body 18 includes a cylindrical wall 18a and a bottom wall 18b integrally formed on one end side in the axial direction of the cylindrical wall 18a. The concave space portion surrounded by the cylindrical wall 18a and the bottom wall 18b forms a hollow portion 18c inside the support shaft 11.

図４は、シャフト本体１８の断面を拡大して示した図である。
シャフト本体１８の円筒壁１８ａの外周面は、軸方向の略中央領域が、ブッシュ１７を介して歯車１２を支持する支持面１８ａ−１とされ、軸方向の一端側領域と他端側領域とが、それぞれブッシュ１５，１６を介して第１ブロック７Ａの支持孔１３と支持穴１４に摺動自在に支持される被支持面１８ａ−２，１８ａ−３とされている。なお、図２中の符号２０は、歯車１２及びブッシュ１７の軸方向の端面と、第１ブロック７Ａの間に介装されたスラストワッシャである。 FIG. 4 is an enlarged view showing a cross section of the shaft body 18.
The outer peripheral surface of the cylindrical wall 18a of the shaft body 18 has a substantially central region in the axial direction as a support surface 18a-1 that supports the gear 12 via the bush 17, and one end side region and the other end side region in the axial direction. Are supported surfaces 18a-2 and 18a-3 slidably supported by the support holes 13 and the support holes 14 of the first block 7A through bushes 15 and 16, respectively. 2 is a thrust washer interposed between the axial end surfaces of the gear 12 and the bush 17 and the first block 7A.

図２に示すように、シャフト本体１８の円筒壁１８ａの内周側には、隔壁部材１９が嵌入され、シャフト本体１８と隔壁部材１９の間に略円筒状の導入路２２が形成されている。円筒壁１８ａの軸方向の一端側の外周面には、環状溝２３が形成されており、その環状溝２３が、円筒壁１８ａに形成された連通孔２４を通して導入路２２に連通している。また、第１ブロック７Ａの支持ブロック部７Ａ−ｂには、図示しない潤滑油送給用のオイルポンプと、ブッシュ１５内の環状溝２３に臨む領域とを接続するオイル通路２５が形成されている。オイル通路２５を通して環状溝２３に流入した潤滑油は、連通孔２４を通して導入路２２に導入される。また、環状溝２３に流入した潤滑油の一部は、環状溝２３を通してシャフト本体１８の軸方向の一端側の被支持面１８ａ−２とブッシュ１５の間の隙間に供給される。
この実施形態の場合、連通孔２４と環状溝２３は導入路２２内の潤滑油を潤滑必要部位に供給する供給口を構成している。 As shown in FIG. 2, a partition wall member 19 is fitted on the inner peripheral side of the cylindrical wall 18 a of the shaft body 18, and a substantially cylindrical introduction path 22 is formed between the shaft body 18 and the partition wall member 19. . An annular groove 23 is formed on the outer peripheral surface on one end side in the axial direction of the cylindrical wall 18a, and the annular groove 23 communicates with the introduction path 22 through a communication hole 24 formed in the cylindrical wall 18a. The support block 7A-b of the first block 7A is formed with an oil passage 25 that connects an oil pump for supplying lubricating oil (not shown) and a region facing the annular groove 23 in the bush 15. . The lubricating oil flowing into the annular groove 23 through the oil passage 25 is introduced into the introduction path 22 through the communication hole 24. Further, part of the lubricating oil flowing into the annular groove 23 is supplied to the gap between the supported surface 18 a-2 on one end side in the axial direction of the shaft body 18 and the bush 15 through the annular groove 23.
In the case of this embodiment, the communication hole 24 and the annular groove 23 constitute a supply port for supplying the lubricating oil in the introduction path 22 to a portion requiring lubrication.

また、シャフト本体１８の軸方向略中央の支持面１８ａ−１と、軸方向の他端側の外周の被支持面１８ａ−３には、環状溝２６，２７がそれぞれ形成されている。各環状溝２６，２７は、シャフト本体１８に形成された連通孔２８，２９を介して導入路２２に連通している。導入路２２に流入した潤滑油は、連通孔２８と環状溝２６を通して支持面１８ａ−１とブッシュ１７の間の隙間に供給れるとともに、連通孔２９と環状溝２７を通して被支持面１８ａ−３とブッシュ１６の間の隙間に供給される。
シャフト本体１８の軸方向の一端側の端面は、第２ブロック７Ｂの端面７Ｂ−ａ（軸方向の位置規制部）に臨む第１の規制面１８ｄとされ、シャフト本体１８の軸方向の他端側の端面は、第１ブロック７Ａの支持穴１４内のブッシュ１６の内向きのフランジ部１６ａ（軸方向の位置規制部）に臨む第２の規制面１８ｅ（規制面）とされている。また、この実施形態の場合、連通孔２８と環状溝２６、連通孔２９と環状溝２７は、それぞれ導入路２２から潤滑必要部位に潤滑油を供給する供給口を構成している。 Further, annular grooves 26 and 27 are respectively formed in the support surface 18a-1 at the substantially center in the axial direction of the shaft body 18 and the supported surface 18a-3 at the outer periphery on the other end side in the axial direction. Each annular groove 26, 27 communicates with the introduction path 22 through communication holes 28, 29 formed in the shaft body 18. Lubricating oil that has flowed into the introduction path 22 is supplied to the gap between the support surface 18a-1 and the bush 17 through the communication hole 28 and the annular groove 26, and to the supported surface 18a-3 through the communication hole 29 and the annular groove 27. It is supplied to the gap between the bushes 16.
The end surface on the one end side in the axial direction of the shaft body 18 is a first restriction surface 18d facing the end surface 7B-a (axial position restriction portion) of the second block 7B, and the other end in the axial direction of the shaft body 18 The end face on the side is a second restriction surface 18e (regulation surface) facing the inward flange portion 16a (axial position restriction portion) of the bush 16 in the support hole 14 of the first block 7A. In the case of this embodiment, the communication hole 28 and the annular groove 26, and the communication hole 29 and the annular groove 27 constitute a supply port for supplying lubricating oil from the introduction path 22 to the lubrication required portion.

隔壁部材１９は、シャフト本体１８の中空部１８ｃ内において、軸方向の一端面がシャフト本体１８の底壁１８ｂに突き当てられる略円筒状の第１隔壁部材３０と、第１隔壁部材３０の軸方向の他端部に一部が嵌入されて組み付けられる有底円筒状の第２隔壁部材３１と、第１隔壁部材３０の内部に嵌入される有底円筒状の第３隔壁部材３２と、を有している。第２隔壁部材３１と第３隔壁部材３２は、互いの開口側の端面が相互に突き合わされることにより、第２隔壁部材３１と第３隔壁部材３２の間に、導入路２２から隔離された隔離室３３を形成している。 The partition member 19 includes a substantially cylindrical first partition member 30 whose one end surface in the axial direction is abutted against the bottom wall 18 b of the shaft body 18 in the hollow portion 18 c of the shaft body 18, and the shaft of the first partition member 30. A bottomed cylindrical second partition member 31 that is partly inserted into the other end in the direction and assembled; and a bottomed cylindrical third partition member 32 that is inserted into the first partition member 30. Have. The second partition wall member 31 and the third partition wall member 32 are separated from the introduction path 22 between the second partition wall member 31 and the third partition wall member 32 by the end surfaces of the opening sides being abutted with each other. An isolation chamber 33 is formed.

図５は、第１隔壁部材３０の断面を拡大して示した図であり、図６は、第１隔壁部材３０を軸方向の一端側から見た図である。
図２，図５，図６に示すように、第１隔壁部材３０は、軸方向の一端側の外周面が他の部分の外周面よりも小径に形成され、軸方向の一端部の近傍の外周面には嵌合溝３４Ａが環状に形成されている。この嵌合溝３４Ａには、シャフト本体１８の円筒壁１８ａの一端側の内周面との間を密閉する環状のシール部材３５Ａが取り付けられている。
第１隔壁部材３０の外周面の嵌合溝３４Ａよりも軸方向内側寄り位置には環状溝３６が形成されている。そして、第１隔壁部材３０には、環状溝３６の底部と第１隔壁部材３０の内周面とを導通させる複数の連通孔３７が形成されている。
また、第１隔壁部材３０の軸方向の他端部の外周には、シャフト本体１８の内周面に嵌合される嵌合フランジ３８が外向きに膨出して形成されている。嵌合フランジ３８の一部には、二面幅状に切欠き部３８ａが形成されている。シャフト本体１８の円筒壁１８ａと隔壁部材１９の間に形成される導入路２２は、切欠き部３８ａによって嵌合フランジ３８よりも軸方向外側位置まで拡大されている。なお、第１隔壁部材３０の軸方向の一端側の内周面は、他の部分の内周面よりも小径に形成されている。 FIG. 5 is an enlarged view of the cross section of the first partition member 30, and FIG. 6 is a view of the first partition member 30 as viewed from one end side in the axial direction.
As shown in FIGS. 2, 5, and 6, the first partition member 30 has an outer peripheral surface on one end side in the axial direction having a smaller diameter than the outer peripheral surface of the other portion, and in the vicinity of one end portion in the axial direction. A fitting groove 34A is formed in an annular shape on the outer peripheral surface. An annular seal member 35 A is attached to the fitting groove 34 A to seal the space between the inner peripheral surface on one end side of the cylindrical wall 18 a of the shaft body 18.
An annular groove 36 is formed at a position closer to the inner side in the axial direction than the fitting groove 34 A on the outer peripheral surface of the first partition member 30. The first partition member 30 is formed with a plurality of communication holes 37 that connect the bottom of the annular groove 36 and the inner peripheral surface of the first partition member 30.
Further, a fitting flange 38 that is fitted to the inner peripheral surface of the shaft body 18 is formed on the outer periphery of the other end portion in the axial direction of the first partition member 30 so as to bulge outward. A part of the fitting flange 38 is formed with a notch 38 a having a two-sided width. The introduction path 22 formed between the cylindrical wall 18a of the shaft body 18 and the partition wall member 19 is expanded to a position outside the fitting flange 38 in the axial direction by a notch 38a. Note that the inner peripheral surface on one end side in the axial direction of the first partition member 30 is formed to have a smaller diameter than the inner peripheral surface of other portions.

図７は、第３隔壁部材３２の断面を拡大して示した図であり、図８は、第３隔壁部材３２を軸方向の一端側から見た図である。
図２，図７，図８に示すように、第３隔壁部材３２は、第１隔壁部材３０と同様に軸方向の一端側の外周面が他の部分の外周面よりも小径に形成され、軸方向の一端部と他端部には、第１隔壁部材３０の内周面に嵌合される嵌合フランジ３９，４０がそれぞれ形成されている。第３隔壁部材３２の軸方向の一端部寄りの嵌合フランジ３９には、二面幅状の切欠き部３９ａが形成されている。また、第３隔壁部材３２の軸方向の他端部寄りの嵌合フランジ４０の外周面には嵌合溝４１が形成されており、その嵌合溝４１に第１隔壁部材３０の内周面との間を密閉するための環状のシール部材４２Ａが取り付けられている。第３隔壁部材３２は、第１隔壁部材３０の内周面に嵌合して組み付けられた状態において、第１隔壁部材３０との間に第２導入路４３を形成する。第２導入路４３は、第１隔壁部材３０の連通孔３７と環状溝３６を通して、シャフト本体１８と隔壁部材１９の間の導入路２２に連通している。 FIG. 7 is an enlarged view of the cross section of the third partition member 32, and FIG. 8 is a view of the third partition member 32 as viewed from one end side in the axial direction.
As shown in FIGS. 2, 7, and 8, the third partition wall member 32 is formed such that the outer peripheral surface on one end side in the axial direction is smaller in diameter than the outer peripheral surface of the other part, similar to the first partition wall member 30. Fitting flanges 39 and 40 that are fitted to the inner peripheral surface of the first partition member 30 are formed at one end and the other end in the axial direction, respectively. The fitting flange 39 near the one end in the axial direction of the third partition wall member 32 is formed with a notch 39a having a two-sided width. A fitting groove 41 is formed on the outer peripheral surface of the fitting flange 40 near the other axial end of the third partition member 32, and the inner peripheral surface of the first partition member 30 is formed in the fitting groove 41. An annular seal member 42A for sealing between the two is attached. The third partition member 32 forms a second introduction path 43 between the third partition member 32 and the first partition member 30 in a state where the third partition member 32 is fitted and assembled to the inner peripheral surface of the first partition member 30. The second introduction path 43 communicates with the introduction path 22 between the shaft body 18 and the partition member 19 through the communication hole 37 and the annular groove 36 of the first partition member 30.

また、図２に示すように、第３隔壁部材３２の軸方向の一端面３２ａは、シャフト本体１８の円筒壁１８ａの内側において、第１隔壁部材３０の軸方向の一端面３０ａとともにシャフト本体１８の底壁１８ｂに突き当てられている。この実施形態においては、第３隔壁部材３２の軸方向の一端面３２ａと第１隔壁部材３０の軸方向の一端面３０ａとが、底壁１８ｂに突き当てられる突き当て部を構成している。 Further, as shown in FIG. 2, the one end surface 32 a in the axial direction of the third partition wall member 32 is inside the cylindrical wall 18 a of the shaft body 18 and the one end surface 30 a in the axial direction of the first partition wall member 30. It is abutted against the bottom wall 18b. In this embodiment, the one end surface 32a in the axial direction of the third partition wall member 32 and the one end surface 30a in the axial direction of the first partition wall member 30 constitute an abutting portion that abuts against the bottom wall 18b.

第３隔壁部材３２の軸方向の一端面３２ａには、嵌合フランジ３９の一対の切欠き部３９ａを相互に接続するように底部溝４４が形成されている。この底部溝４４には、第３隔壁部材３２の軸方向の一端面３２ａがシャフト本体１８の底壁１８ｂに当接した状態において、第２導入路４３内の潤滑油が切欠き部３９ａを通して導入される。
また、図２，図４に示すように、シャフト本体１８の底壁１８ｂのうちの、第３隔壁部材３２の底部溝４４に臨む位置には、底壁１８ｂを貫通する貫通孔４５が形成されている。貫通孔４５は、第３隔壁部材３２の底部溝４４を、シャフト本体１８の軸方向の一端面（第１の規制面１８ｄ）と第２ブロック７Ｂの端面７Ｂ−ａとの間の隙間に連通させる。 A bottom groove 44 is formed on one axial end surface 32 a of the third partition member 32 so as to connect the pair of notch portions 39 a of the fitting flange 39 to each other. Lubricating oil in the second introduction path 43 is introduced into the bottom groove 44 through the notch 39a in a state where the axial end surface 32a of the third partition member 32 is in contact with the bottom wall 18b of the shaft body 18. Is done.
As shown in FIGS. 2 and 4, a through hole 45 penetrating the bottom wall 18 b is formed at a position facing the bottom groove 44 of the third partition wall member 32 in the bottom wall 18 b of the shaft body 18. ing. The through hole 45 communicates the bottom groove 44 of the third partition wall member 32 with a gap between one axial end surface (first regulating surface 18d) of the shaft body 18 and the end surface 7B-a of the second block 7B. Let

図９は、第２隔壁部材３１の断面を拡大して示した図である。
図２，図９に示すように、第２隔壁部材３１は、軸方向の一端側が他の部分よりも小径に形成され、その小径部３１ａが第１隔壁部材３０の軸方向の他端に嵌入されるようになっている。小径部３１ａの外周には嵌合溝４６が形成されており、その嵌合溝４６にシール部材４２Ｂが取り付けられている。シール部材４２Ｂは、第２隔壁部材３１と第１隔壁部材３０の軸方向の一端側領域との間を液密に密閉する。 FIG. 9 is an enlarged view showing a cross section of the second partition wall member 31.
As shown in FIGS. 2 and 9, the second partition member 31 is formed such that one end side in the axial direction has a smaller diameter than the other part, and the small diameter portion 31 a is fitted into the other end in the axial direction of the first partition member 30. It has come to be. A fitting groove 46 is formed on the outer periphery of the small diameter portion 31a, and a seal member 42B is attached to the fitting groove 46. The seal member 42 B seals the space between the second partition member 31 and the one end side region in the axial direction of the first partition member 30 in a liquid-tight manner.

また、第２隔壁部材３１は、小径部３１ａに隣接して小径部３１ａよりも外径の大きい中径部３１ｂが形成されており、さらに中径部３１ｂの軸方向の他端に中径部３１ｂよりも外径の大きい大径部３１ｃが形成されている。大径部３１ｃの外周面には、嵌合溝４７が形成されており、その嵌合溝４７にシール部材３５Ｂが取り付けられている。大径部３１ｃは、シャフト本体１８の円筒壁１８ａの軸方向の他端部の内周面に嵌合される。シール部材３５Ｂは、円筒壁１８ａと大径部３１ｃの嵌合部において、シャフト本体１８と隔壁部材１９の間を液密に密閉する。
シャフト本体１８と隔壁部材１９の間に形成される導入路２２は、円筒壁１８ａの内周面と、第１隔壁部材３０及び第２隔壁部材３１の外周面と、シール部材３５Ａ，３５Ｂとによって囲まれた空間によって構成されている。 Further, the second partition wall member 31 is formed with an intermediate diameter portion 31b having an outer diameter larger than that of the small diameter portion 31a adjacent to the small diameter portion 31a, and at the other end in the axial direction of the intermediate diameter portion 31b. A large diameter portion 31c having a larger outer diameter than 31b is formed. A fitting groove 47 is formed on the outer peripheral surface of the large diameter portion 31 c, and a seal member 35 B is attached to the fitting groove 47. The large diameter portion 31 c is fitted to the inner peripheral surface of the other end portion in the axial direction of the cylindrical wall 18 a of the shaft body 18. The seal member 35B seals the space between the shaft body 18 and the partition wall member 19 in a liquid-tight manner at the fitting portion between the cylindrical wall 18a and the large diameter portion 31c.
The introduction path 22 formed between the shaft body 18 and the partition member 19 is formed by the inner peripheral surface of the cylindrical wall 18a, the outer peripheral surfaces of the first partition member 30 and the second partition member 31, and the seal members 35A and 35B. It is composed of an enclosed space.

第２隔壁部材３１の中径部３１ｂは、第１隔壁部材３０の嵌合フランジ３８を除く一般部の外周面とほぼ同外径に形成されている。中径部３１ｂの外周側の空間部と第１隔壁部材３０の一般部の外周側の空間部とは外向き嵌合フランジ３８の切欠き部３８ａによって相互に連通している。したがって、導入路２２は、第１隔壁部材３０の一般部の外周面から中径部３１ｂの外周面に跨る軸方向範囲に形成されている。また、第２隔壁部材３１の中径部３１ｂと小径部３１ａの間には、径方向に沿って立ち上がる段差面３１ｄが形成されている。この段差面３１ｄは、第１隔壁部材３０の軸方向の一端面に突き当てられている。 The middle diameter portion 31 b of the second partition wall member 31 is formed to have substantially the same outer diameter as the outer peripheral surface of the general portion excluding the fitting flange 38 of the first partition wall member 30. The space portion on the outer peripheral side of the medium diameter portion 31 b and the space portion on the outer peripheral side of the general portion of the first partition member 30 are communicated with each other by a notch portion 38 a of the outward fitting flange 38. Accordingly, the introduction path 22 is formed in an axial range extending from the outer peripheral surface of the general portion of the first partition member 30 to the outer peripheral surface of the medium diameter portion 31b. Further, a step surface 31d rising along the radial direction is formed between the middle diameter portion 31b and the small diameter portion 31a of the second partition wall member 31. The step surface 31 d is abutted against one end surface of the first partition member 30 in the axial direction.

また、第２隔壁部材３１の中径部３１ｂの外周面には、浅い径方向穴４８が複数形成されている。第２隔壁部材３１には、一端部が各径方向穴４８に連通し、他端部が第２隔壁部材３１の軸方向の他端面に開口する複数の軸孔部４９が形成されている。軸孔部４９の他端部は、ブッシュ１６の内向きのフランジ部１６ａの内周面と、第１ブロック７Ａの支持穴１４内に形成された窪み部１４ａに臨む位置に開口している。
この実施形態においては、径方向穴４８と軸孔部４９とが、導入路２２内の潤滑油を支持シャフト１１の軸方向の端面とブッシュ１６との対向部の間に供給する供給口を構成している。 A plurality of shallow radial holes 48 are formed on the outer peripheral surface of the middle diameter portion 31 b of the second partition wall member 31. The second partition member 31 is formed with a plurality of shaft hole portions 49 having one end communicating with each radial hole 48 and the other end opening on the other end surface in the axial direction of the second partition member 31. The other end portion of the shaft hole portion 49 is opened at a position facing the inner peripheral surface of the inward flange portion 16a of the bush 16 and the recess portion 14a formed in the support hole 14 of the first block 7A.
In this embodiment, the radial hole 48 and the shaft hole portion 49 constitute a supply port for supplying the lubricating oil in the introduction path 22 between the axial end surface of the support shaft 11 and the opposed portion of the bush 16. doing.

支持シャフト１１は、第１ブロック７Ａと第２ブロック７Ｂに組み付けられる前に、以下のようにして組み立てられる。
最初に、第１隔壁部材３０と第２隔壁部材３１と第３隔壁部材３２の各嵌合溝３４Ａ，４６，４７，４１にシール部材３５Ａ，４２Ｂ，３５Ｂ，４２Ａを予め取り付けておく。この状態において、第３隔壁部材３２と第２隔壁部材３１の開口側の端面を相互に突き合わせ、その状態において、第３隔壁部材３２の軸方向の一端側を第２隔壁部材３１とともに第１隔壁部材３０の内周部に挿入する。こうして、第３隔壁部材３２が第１隔壁部材３０の内側に完全に挿入されると、第２隔壁部材３１の小径部３１ａが第１隔壁部材３０の内周部に嵌入され、その状態において第２隔壁部材３１の段差面３１ｄが第１隔壁部材の軸方向の他端面に当接する。このとき、第３隔壁部材３２と第２隔壁部材３１の各外周面のシール部材４２Ａ，４２Ｂが第１隔壁部材３０の内周面に密接し、第３隔壁部材３２と第２隔壁部材３１の間に形成される隔離室３３が外部と密閉される。 The support shaft 11 is assembled as follows before being assembled to the first block 7A and the second block 7B.
First, seal members 35A, 42B, 35B, and 42A are attached in advance to the fitting grooves 34A, 46, 47, and 41 of the first partition member 30, the second partition member 31, and the third partition member 32, respectively. In this state, the end surfaces on the opening side of the third partition member 32 and the second partition member 31 are abutted against each other, and in this state, one end side in the axial direction of the third partition member 32 together with the second partition member 31 is the first partition wall. Insert into the inner periphery of the member 30. Thus, when the third partition member 32 is completely inserted inside the first partition member 30, the small-diameter portion 31a of the second partition member 31 is fitted into the inner peripheral portion of the first partition member 30, and in this state, The step surface 31d of the two partition members 31 contacts the other end surface of the first partition member in the axial direction. At this time, the seal members 42A and 42B on the outer peripheral surfaces of the third partition member 32 and the second partition member 31 are in close contact with the inner peripheral surface of the first partition member 30, and the third partition member 32 and the second partition member 31 The isolation chamber 33 formed therebetween is sealed from the outside.

この後、第１隔壁部材３０と第２隔壁部材３１と第３隔壁部材３２が上記のようにして一体化された隔壁部材１９を、軸方向の一端側からシャフト本体１８の円筒壁１８ａに挿入する。こうして、隔壁部材１９がシャフト本体１８の円筒壁１８ａ内に所定量挿入されると、第１隔壁部材３０の軸方向の一端側の外周面と第２隔壁部材３１の軸方向の他端側の外周面がシャフト本体１８の円筒壁１８ａに嵌合され、第１隔壁部材３０上のシール部材３５Ａと第２隔壁部材３１上のシール部材３５Ｂが円筒壁１８ａ内に密接する。そして、シャフト本体１８に対する隔壁部材１９の挿入は、隔壁部材１９の軸方向の一端面３０ａ，３２ａがシャフト本体１８の底壁１８ｂに当接した時点で終了する。この結果、第１隔壁部材３０は、第２隔壁部材３１とシャフト本体１８の底壁１８ｂとに挟み込まれた状態において、シャフト本体１８内に固定される。以上で支持シャフト１１の組み立てを完了する。 Thereafter, the partition member 19 in which the first partition member 30, the second partition member 31, and the third partition member 32 are integrated as described above is inserted into the cylindrical wall 18a of the shaft body 18 from one end side in the axial direction. To do. Thus, when the partition member 19 is inserted into the cylindrical wall 18a of the shaft body 18 by a predetermined amount, the outer peripheral surface on one end side in the axial direction of the first partition member 30 and the other end side in the axial direction of the second partition member 31 are placed. The outer peripheral surface is fitted into the cylindrical wall 18a of the shaft body 18, and the seal member 35A on the first partition member 30 and the seal member 35B on the second partition member 31 are in close contact with the cylindrical wall 18a. Then, the insertion of the partition wall member 19 into the shaft body 18 ends when the axial end faces 30 a and 32 a of the partition wall member 19 come into contact with the bottom wall 18 b of the shaft body 18. As a result, the first partition member 30 is fixed in the shaft body 18 in a state of being sandwiched between the second partition member 31 and the bottom wall 18 b of the shaft body 18. Thus, the assembly of the support shaft 11 is completed.

また、支持シャフト１１にブッシュ１７を介して歯車１２が回転自在に支持され、その支持シャフト１１が第１ブロック７Ａと第２ブロック７Ｂに組み付けられた状態において、第１ブロック７Ａのオイル通路２５に潤滑油が送給されると、支持シャフト１１回りの各部には以下のようにして潤滑油が供給される。 Further, the gear 12 is rotatably supported by the support shaft 11 via the bush 17, and the support shaft 11 is assembled to the oil passage 25 of the first block 7A in a state where the support shaft 11 is assembled to the first block 7A and the second block 7B. When the lubricating oil is fed, the lubricating oil is supplied to each part around the support shaft 11 as follows.

オイル通路２５に送給された潤滑油は、シャフト本体１８の軸方向の一端の環状溝２３と連通孔２４を通ってシャフト本体１８と隔壁部材１９の間の環状の導入路２２に導入されるとともに、環状溝２３を通してシャフト本体１８の軸方向の一端側の被支持面１８ａ−２とブッシュ１５の間の隙間に供給される。導入路２２に導入された潤滑油は、シャフト本体１８の軸方向略中央の連通孔２８と環状溝２６を通して支持面１８ａ−１とブッシュ１７の間の隙間に供給されるとともに、シャフト本体１８の軸方向の他端の連通孔２９と環状溝２７を通して被支持面１８ａ−２とブッシュ１６の間の隙間に供給される。 The lubricating oil fed to the oil passage 25 is introduced into the annular introduction path 22 between the shaft body 18 and the partition member 19 through the annular groove 23 and the communication hole 24 at one end in the axial direction of the shaft body 18. At the same time, it is supplied to the gap between the supported surface 18 a-2 on one end side in the axial direction of the shaft body 18 and the bush 15 through the annular groove 23. The lubricating oil introduced into the introduction path 22 is supplied to the gap between the support surface 18 a-1 and the bush 17 through the communication hole 28 and the annular groove 26 at the substantially center in the axial direction of the shaft body 18, and It is supplied to the gap between the supported surface 18 a-2 and the bush 16 through the communication hole 29 at the other end in the axial direction and the annular groove 27.

また、導入路２２に導入された潤滑油は、さらに第２隔壁部材３１の径方向穴４８と軸孔部４９を通して、第２隔壁部材３１の軸方向の他端面、及びシャフト本体１８の軸方向の他端面（第２の規制面１８ｅ）と、ブッシュ１６の内向きのフランジ部１６ａの間の隙間に供給される。また、導入路２２から第２隔壁部材３１の軸方向の他端面に導入された潤滑油は、支持穴１４の窪み部１４ａを通して、支持穴１４とブッシュ１６のフランジ部１６ａとの間の隙間にも供給される。
一方、導入路２２に導入された潤滑油は、第３隔壁部材３２の環状溝３６と連通孔３７を通して第２導入路４３にも導入される。第２導入路４３に導入された潤滑油は、第３隔壁部材３２の切欠き部３９ａと、軸方向の一端側の端面の底部溝４４と、シャフト本体１８の貫通孔４５を通して、シャフト本体１８の一端側の端面（第１の規制面１８ｄ）と第２ブロック７Ｂの軸方向内側の端面７Ｂ−ａとの間の隙間にも供給される。 Further, the lubricating oil introduced into the introduction path 22 passes through the radial hole 48 and the shaft hole portion 49 of the second partition member 31 and the other end surface in the axial direction of the second partition member 31 and the axial direction of the shaft body 18. Is supplied to the gap between the other end surface (second restricting surface 18 e) and the inward flange portion 16 a of the bush 16. Further, the lubricating oil introduced from the introduction path 22 to the other end surface of the second partition wall member 31 in the axial direction passes through the recessed portion 14 a of the support hole 14 and enters the gap between the support hole 14 and the flange portion 16 a of the bush 16. Is also supplied.
On the other hand, the lubricating oil introduced into the introduction path 22 is also introduced into the second introduction path 43 through the annular groove 36 and the communication hole 37 of the third partition wall member 32. The lubricating oil introduced into the second introduction passage 43 passes through the notch 39 a of the third partition member 32, the bottom groove 44 on the end surface on the one end side in the axial direction, and the through hole 45 of the shaft main body 18. Is also supplied to the gap between the end surface (first regulating surface 18d) on one end side of the second block 7B and the end surface 7B-a on the axially inner side of the second block 7B.

以上のように、この実施形態に係る支持シャフト１１は、内部に隔離室３３を有する隔壁部材１９がシャフト本体１８の中空部１８ｃ内に配置され、シャフト本体１８と隔壁部材１９の間に潤滑油の導入路２２が形成されている。このため、この実施形態に係る支持シャフト１１においては、重量の増加を招くことなく、シャフト本体１８内の導入路２２の容積を減少させることができる。したがって、この実施形態に係る支持シャフト１１によれば、導入路２２をシャフト本体１８内の広い範囲に形成しつつも、導入路２２を満たすための潤滑油量を削減することができる。よって、この実施形態に係る支持シャフト１１によれば、導入路２２を満たすため高圧の潤滑油の容量を削減することができるとともに、導入路２２内に多量の潤滑油が滞留することによって潤滑油の供給系に油圧変動が生じるのを未然に防止することができる。 As described above, in the support shaft 11 according to this embodiment, the partition member 19 having the isolation chamber 33 inside is disposed in the hollow portion 18 c of the shaft body 18, and the lubricating oil is interposed between the shaft body 18 and the partition member 19. The introduction path 22 is formed. For this reason, in the support shaft 11 according to this embodiment, the volume of the introduction path 22 in the shaft body 18 can be reduced without causing an increase in weight. Therefore, according to the support shaft 11 according to this embodiment, the amount of lubricating oil for filling the introduction path 22 can be reduced while forming the introduction path 22 in a wide range in the shaft body 18. Therefore, according to the support shaft 11 according to this embodiment, the capacity of the high-pressure lubricating oil can be reduced to fill the introduction path 22, and a large amount of lubricating oil stays in the introduction path 22, thereby It is possible to prevent hydraulic pressure fluctuations from occurring in the supply system.

また、この実施形態に係る支持シャフト１１においては、シャフト本体１８の軸方向の両側の端面が、第２ブロック７Ｂの軸方向内側の端面７Ｂ−ａに対向する第１の規制面１８ｄと、ブッシュ１６のフランジ部１６ａに対向する第２の規制面１８ｅとされ、シャフト本体１８の貫通孔４５と、第２隔壁部材３１の軸孔部４９が、それぞれ第１の規制面１８ｄと第２の規制面１８ｅに臨む位置に設けられている。このため、潤滑油を第１の規制面１８ｄと第２ブロック７Ｂの軸方向内側の端面７Ｂ−ａの間の隙間と、第２の規制面１８ｅとブッシュ１６のフランジ部１６ａとの間の隙間に供給することができる。 Further, in the support shaft 11 according to this embodiment, the end surfaces on both sides in the axial direction of the shaft main body 18 have a first regulating surface 18d facing the end surface 7B-a on the axially inner side of the second block 7B, and a bush. 16 is a second restricting surface 18e facing the flange portion 16a, and the through hole 45 of the shaft body 18 and the shaft hole portion 49 of the second partition wall member 31 are the first restricting surface 18d and the second restricting surface, respectively. It is provided at a position facing the surface 18e. Therefore, the gap between the first regulating surface 18d and the end surface 7B-a on the inner side in the axial direction of the second block 7B and the gap between the second regulating surface 18e and the flange portion 16a of the bush 16 are used for lubricating oil. Can be supplied to.

また、この実施形態に係る支持シャフト１１では、シャフト本体１８が、円筒壁１８ａと底壁１８ｂとを有する有底円筒状に形成されるとともに、隔壁部材１９が、シャフト本体１８の円筒壁１８ａの内側に配置され、シャフト本体１８の円筒壁１８ａの内周面と、隔壁部材１９の外周面と、両者の軸方向の両側の縁部間を密閉するシール部材３５Ａ，３５Ｂと、によって潤滑油の導入路２２が構成されている。このため、シャフト本体１８の円筒壁１８ａと隔壁部材１９の間にできる隙間を利用して、潤滑油の導入路２２を容易に形成することができる。 Further, in the support shaft 11 according to this embodiment, the shaft body 18 is formed in a bottomed cylindrical shape having a cylindrical wall 18 a and a bottom wall 18 b, and the partition wall member 19 is formed on the cylindrical wall 18 a of the shaft body 18. The inner surface of the cylindrical wall 18a of the shaft body 18, the outer peripheral surface of the partition wall member 19, and the sealing members 35A and 35B that seal the gap between both axial edges of the both are disposed inside. An introduction path 22 is configured. For this reason, the introduction path 22 for the lubricating oil can be easily formed by utilizing the gap formed between the cylindrical wall 18 a of the shaft body 18 and the partition wall member 19.

さらに、この実施形態に係る支持シャフト１１においては、隔壁部材１９の軸方向の両側の縁部の外周面に嵌合溝３４Ａ，３４Ｂが形成され、各嵌合溝３４Ａ，３４Ｂにシール部材３５Ａ，３５Ｂが嵌合されており、隔壁部材１９の軸方向の一端面３０ａが、シャフト本体１８の円筒壁１８ａの内側において、底壁１８ｂに突き当てられるようになっている。このため、隔壁部材１９をシャフト本体１８に組み付ける場合には、隔壁部材１９の各嵌合溝３４Ａ，３４Ｂにシール部材３５Ａ，３５Ｂを予め嵌合しておき、その状態において、隔壁部材１９の軸方向の一端面３０ａがシャフト本体１８の底壁１８ｂに突き当たるまで、隔壁部材１９を軸方向の一端側からシャフト本体１８に挿入するだけで、隔壁部材１９の組み付けを容易に、かつ正確に行うことができる。即ち、隔壁部材１９を、軸方向の一端面３０ａがシャフト本体１８の底壁１８ｂに突き当たるまで挿入すると、その時点で各シール部材３５Ａ，３５Ｂが円筒壁１８ａ内の一定位置に自動的に配置されることになるため、煩雑な作業を要することなく、シール部材３５Ａ，３５Ｂの配置精度を高めることが可能になる。 Furthermore, in the support shaft 11 according to this embodiment, fitting grooves 34A and 34B are formed on the outer peripheral surfaces of both edge portions of the partition wall member 19 in the axial direction, and the sealing members 35A and 34B are formed in the fitting grooves 34A and 34B, respectively. 35B is fitted, and one end face 30a in the axial direction of the partition wall member 19 is abutted against the bottom wall 18b inside the cylindrical wall 18a of the shaft body 18. For this reason, when the partition member 19 is assembled to the shaft body 18, the seal members 35A and 35B are previously fitted in the respective fitting grooves 34A and 34B of the partition member 19, and in this state, the shaft of the partition member 19 is The partition member 19 can be assembled easily and accurately simply by inserting the partition member 19 into the shaft body 18 from one end side in the axial direction until the one end surface 30a in the direction hits the bottom wall 18b of the shaft body 18. Can do. That is, when the partition member 19 is inserted until the one end face 30a in the axial direction hits the bottom wall 18b of the shaft body 18, the seal members 35A and 35B are automatically arranged at fixed positions in the cylindrical wall 18a. Therefore, the arrangement accuracy of the seal members 35A and 35B can be increased without requiring a complicated operation.

また、この実施形態に係る支持シャフト１１は、隔壁部材１９が、シャフト本体１８の底壁１８ｂに突き当てられる第１隔壁部材３０と、第１隔壁部材３０の軸方向の他端に突き当てられて組み付けられる第２隔壁部材３１と、を有しており、第１隔壁部材３０の一端面３０ａを、シャフト本体１８の底壁１８ｂに突き当てた状態において、第２隔壁部材３１がシャフト本体１８の円筒壁１８ａ内に嵌合固定されるようになっている。このため、シャフト本体１８に第１隔壁部材３０と第２隔壁部材３１を組み付ける場合には、第１隔壁部材３０と第２隔壁部材３１を相互に組み付けた状態において、第１隔壁部材３０の一端面３０ａがシャフト本体１８の底壁１８ｂに突き当たり、かつ第２隔壁部材３１がシャフト本体１８の円筒壁１８ａ内に嵌合されるまで、第１隔壁部材３０と第２隔壁部材３１をシャフト本体１８内に挿入するだけで良い。
即ち、こうして第１隔壁部材３０と第２隔壁部材３１がシャフト本体１８内に挿入されると、第１隔壁部材３０が、シャフト本体１８の底壁１８ｂと第２隔壁部材３１に挟み込まれた状態でシャフト本体１８内に固定されることになるため、特別な固定手段を用いることなく、第１隔壁部材３０をシャフト本体１８内に容易に固定することができる。したがって、この構造を採用することにより、部品点数の削減と、組付け作業の容易化を図ることができる。 Further, in the support shaft 11 according to this embodiment, the partition member 19 is abutted against the first partition member 30 that abuts against the bottom wall 18b of the shaft body 18 and the other axial end of the first partition member 30. The second partition wall member 31 is attached to the shaft body 18 in a state where the one end face 30a of the first partition wall member 30 is abutted against the bottom wall 18b of the shaft body 18. The cylindrical wall 18a is fitted and fixed. For this reason, when the first partition member 30 and the second partition member 31 are assembled to the shaft body 18, the first partition member 30 and the second partition member 31 are assembled in the state where the first partition member 30 and the second partition member 31 are assembled to each other. The first partition member 30 and the second partition member 31 are connected to the shaft body 18 until the end surface 30a hits the bottom wall 18b of the shaft body 18 and the second partition member 31 is fitted into the cylindrical wall 18a of the shaft body 18. Just insert it inside.
That is, when the first partition member 30 and the second partition member 31 are thus inserted into the shaft body 18, the first partition member 30 is sandwiched between the bottom wall 18 b of the shaft body 18 and the second partition member 31. Thus, the first partition member 30 can be easily fixed in the shaft main body 18 without using any special fixing means. Therefore, by adopting this structure, it is possible to reduce the number of parts and facilitate the assembling work.

また、この実施形態に係る支持シャフト１１にあっては、シャフト本体内１８の導入路２２を第２隔壁部材３１の軸方向の他端面に導通させる供給口の主要部が、第２隔壁部材３１内に軸方向に沿って延在する軸孔部４９によって構成されている。このため、導入路２２内の潤滑油を、短い通路長の供給口によって第２隔壁部材３１の軸方向の他端面側に安定的に供給することができる。 Further, in the support shaft 11 according to this embodiment, the main part of the supply port for conducting the introduction path 22 in the shaft body 18 to the other end surface in the axial direction of the second partition member 31 is the second partition member 31. It is comprised by the axial hole part 49 extended along an axial direction inside. For this reason, the lubricating oil in the introduction path 22 can be stably supplied to the other end surface side in the axial direction of the second partition wall member 31 through the supply port having a short passage length.

また、この実施形態に係る支持シャフト１１の場合、略筒状の第１隔壁部材３０の内周部に第３隔壁部材３２が組み付けられ、第１隔壁部材３０と第３隔壁部材３２の間に、導入路２２に連通する第２導入路４３が形成されている。このため、第１隔壁部材３０と第３隔壁部材３２の間に形成されている第２導入路４３を通して、支持シャフト１１回りの潤滑必要部位に潤滑油を効率良く供給することができる。 Further, in the case of the support shaft 11 according to this embodiment, the third partition member 32 is assembled to the inner peripheral portion of the substantially cylindrical first partition member 30, and the first partition member 30 and the third partition member 32 are interposed. A second introduction path 43 communicating with the introduction path 22 is formed. For this reason, the lubricating oil can be efficiently supplied to the portion requiring lubrication around the support shaft 11 through the second introduction passage 43 formed between the first partition member 30 and the third partition member 32.

特に、この実施形態に係る支持シャフト１１においては、第３隔壁部材３２の軸方向の一端部が、シャフト本体１８の底壁１８ｂに対して当接可能にされるとともに、第３隔壁部材３２の軸方向の一端面に、第２導入路４３に連通する底部溝４４が形成され、シャフト本体１８の底壁１８ｂの底部溝４４に臨む位置に、第２導入路４３内の潤滑油をシャフト本体１８の軸方向の一端面の外側に供給する貫通孔４５が形成されている。このため、シャフト本体１８の軸方向の一端面と第２ブロック７Ｂの軸方向内側の端面７Ｂ−ａとの間の隙間に、第２導入路４３内の潤滑油を確実に供給することができる。 In particular, in the support shaft 11 according to this embodiment, one end of the third partition member 32 in the axial direction can be brought into contact with the bottom wall 18b of the shaft body 18, and the third partition member 32 A bottom groove 44 communicating with the second introduction path 43 is formed on one end face in the axial direction, and the lubricating oil in the second introduction path 43 is placed at a position facing the bottom groove 44 of the bottom wall 18 b of the shaft body 18. A through-hole 45 is formed to be supplied to the outside of one axial end surface of 18. For this reason, the lubricating oil in the 2nd introduction path 43 can be reliably supplied to the clearance gap between the end surface 7B-a of the axial direction inner side of the axial direction of the shaft main body 18, and the 2nd block 7B. .

なお、この発明は上記の実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々の設計変更が可能である。 In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

７Ａ…第１ブロック（支持部材）
７Ｂ…第２ブロック（支持部材）
７Ｂ−ａ…軸方向内側の端面（軸方向の位置規制部）
１１…支持シャフト
１２…歯車（回転部材）
１６ａ…内向きのフランジ部（軸方向の位置規制部）
１８…シャフト本体
１８ａ…円筒壁
１８ｂ…底壁
１８ａ−１…支持面
１８ａ−２，１８ａ−３…被支持面
１８ｃ…中空部
１８ｄ…第１の規制面（規制面）
１８ｅ…第２の規制面（規制面）
１９…隔壁部材
２２…導入路
２３…環状溝（供給口）
２４…連通孔（供給口）
２６，２７…環状溝（供給口）
２８，２９…連通孔（供給口）
３０…第１隔壁部材
３０ａ…一端面（突き当て部）
３１…第２隔壁部材
３２…第３隔壁部材
３２ａ…一端面（突き当て部）
３３…隔離室
３４Ａ，４７…嵌合溝
３５Ａ，３５Ｂ…シール部材
４３…第２導入路
４４…底部溝
４５…貫通孔
４８…径方向穴（供給口）
４９…軸孔部（供給口） 7A ... 1st block (supporting member)
7B ... Second block (supporting member)
7B-a ... Axial end face (axial position restricting portion)
11 ... support shaft 12 ... gear (rotating member)
16a ... Inward flange part (axial position restriction part)
DESCRIPTION OF SYMBOLS 18 ... Shaft body 18a ... Cylindrical wall 18b ... Bottom wall 18a-1 ... Support surface 18a-2, 18a-3 ... Supported surface 18c ... Hollow part 18d ... 1st control surface (control surface)
18e ... 2nd regulation surface (regulation surface)
19 ... partition member 22 ... introduction path 23 ... annular groove (supply port)
24. Communication hole (supply port)
26, 27 ... annular groove (supply port)
28, 29 ... Communication hole (supply port)
30 ... 1st partition member 30a ... One end surface (butting part)
31 ... 2nd partition member 32 ... 3rd partition member 32a ... One end surface (butting part)
33 ... Isolation chambers 34A, 47 ... Fitting grooves 35A, 35B ... Seal member 43 ... Second introduction path 44 ... Bottom groove 45 ... Through hole 48 ... Radial hole (supply port)
49 ... Shaft hole (supply port)

Claims

A rotary member (28, 26, 24, 23, 29, 27) having a supply port (28, 26, 24, 23, 29, 27) for supplying lubricating oil from the introduction passage (22) to a portion requiring lubrication while having a lubricating oil introduction passage (22) inside. 12) In the support shaft of
A shaft body (18) having a hollow portion (18c) therein and a support surface (18a-1) for rotatably supporting the rotating member (12);
A partition member (assembled into the shaft main body (18) so that at least a part thereof is disposed inside the hollow portion (18c) and forming the introduction path (22) with the shaft main body (18) ( 19)
Said partition member (19), possess the introduction path (22) isolated isolation chambers from the (33) therein,
The outer peripheral surfaces on both axial sides of the shaft body (18) are supported surfaces (18a-2, 18a-3) supported slidably on the support member (7A),
The supply port (28, 26, 24, 23, 29, 27) has a position facing the support surface (18a-1) and the supported surface (18a-2, 18a-3) of the shaft body (18). The support shaft of the rotating member is provided at a position facing the) .

The axial end surface of the shaft body (18) is a restricting surface (18d, 18e) facing the axial position restricting portion (7B-a) of the support member (7B, 7A).
2. The support shaft for a rotating member according to claim 1, wherein the supply port is provided at a position facing the regulating surface (18 d, 18 e) of the shaft body (18) .

A rotary member (28, 26, 24, 23, 29, 27) having a supply port (28, 26, 24, 23, 29, 27) for supplying lubricating oil from the introduction passage (22) to a portion requiring lubrication while having a lubricating oil introduction passage (22) inside. 12) In the support shaft of
A shaft body (18) having a hollow portion (18c) therein and a support surface (18a-1) for rotatably supporting the rotating member (12);
A partition member (assembled into the shaft main body (18) so that at least a part thereof is disposed inside the hollow portion (18c) and forming the introduction path (22) with the shaft main body (18) ( 19)
The partition member (19) has an isolation chamber (33) isolated from the introduction path (22) inside,
The shaft body (18) is formed in a bottomed cylindrical shape having a cylindrical wall (18a) and a bottom wall (18b),
The partition member (19) is disposed inside the cylindrical wall (18a) of the shaft body (18),
The space between the partition wall member (19) and the shaft body (18) is liquid-tight between the edges on both sides in the axial direction of the partition wall member (19) and the inner peripheral surface of the cylindrical wall (18a). Seal members (35A, 35B) for sealing are arranged,
The introduction path (22) is defined by a space surrounded by the inner peripheral surface of the cylindrical wall (18a) of the shaft body (18), the outer peripheral surface of the partition wall member (19), and the seal members (35A, 35B). ), And a support shaft for a rotating member.

Fitting grooves (34A, 47) into which the sealing members (35A, 35B) are fitted are formed on the outer peripheral surfaces of the edges on both sides in the axial direction of the partition member (19),
An abutting portion (30a) that abuts against the bottom wall (18b) on the inner side of the cylindrical wall (18a) of the shaft body (18) is provided on one axial end surface of the partition member (19). The support shaft for a rotating member according to claim 3 , wherein the support shaft is provided.

The partition member (19) abuts against the first partition member (30) having the abutting portion (30a) on one end side in the axial direction and the other end portion in the axial direction of the first partition member (30). A second partition member (31) assembled and assembled,
The second partition member (31) is configured so that the abutment portion (30a) of the first partition member (30) abuts against the bottom wall (18b) of the shaft body (18). The support shaft for a rotating member according to claim 4, wherein the shaft is fitted and fixed to the cylindrical wall (18a) .

The second partition member (31) is formed with the supply port for conducting the introduction path (22) to the other end surface in the axial direction, and the supply port has a main portion as a second partition member ( 31. The support shaft for a rotating member according to claim 5, wherein the support shaft is constituted by an axial hole portion (49) extending in the axial direction in the shaft 31) .

The first partition member (30) is formed in a substantially cylindrical shape,
A third partition member (32) is assembled to the inner peripheral side of the first partition member (30),
The second introduction path (43) communicating with the introduction path (22) is formed between the first partition member (30) and the third partition member (32). The support shaft of the rotating member according to 5 or 6 .

One end of the third partition member (32) in the axial direction can pass through the first partition member (30) in the axial direction and abut on the bottom wall (18b) of the shaft body (18). And
A bottom groove (44) communicating with the second introduction path (43) is formed on one axial end surface of the third partition member (32),
In the bottom wall (18b) of the shaft body (18), at a position facing the bottom groove (44), lubrication in the second introduction path (43) passes through the bottom wall (18b). The support of the rotating member according to claim 7 , wherein a through hole (45) for introducing oil between the one end surface of the shaft main body (18) in the axial direction and the support member (7B) is formed. shaft.