DE112006000762T5 - oil path structure - Google Patents

Abstract

Oil path structure with
a first member (21) having a joint surface (21a) and a first oil path (22) open at the joint surface (21a) and formed in the member;
a second member (31) having a second oil path (32) formed therein and connected to the connection surface (21a) such that the first oil path (22) and the second oil path (32) communicate with each other;
an annular seal member (46) sealing between the first oil path (22) and the second oil path (32); and
an oil amount adjusting member (41) that limits an amount of oil flowing through an oil path;
in which
the second member (31) has a receiving portion (33) formed at a position adjacent to the connecting surface (21a) and in the course of the second oil path (32);
in the accommodating portion (33), the annular sealing member (46) in contact with the joining surface (21a) and the oil amount adjusting member (41) mounted on one of the ...

Description

Technical area

The This invention relates generally to an oilway structure, and more particularly on an oilway structure with a Ölmengeneinstellbauteil for limiting an amount of oil, which is arranged in the way.

Relevant prior art

With respect to a conventional oil path structure, for example, discloses Japanese Patent Application Laid-Open Publication No. 10-169773 a transmission operating device aimed at simplifying the reduction in size and cost. The transmission operating device disclosed in this document has a cylinder housing having cylinder-side flow passages formed therein, and a valve housing having valve-side flow passages connected to the cylinder-side flow passages formed therein. In a common connection between the cylinder housing and the valve housing, an annular sealing member is arranged, which surrounds the outer periphery of the flow passage.

Further, the Japanese Patent Application Laid-Open Publication No. 9-79118 an engine / generator of an internal combustion engine, which aims at suppressing a temperature increase of a stator winding, without increasing the size or number of parts.

In the transmission operating device, which in the Japanese Patent Application Laid-Open Publication No. 10-169773 is disclosed, pressurized fluid is caused to flow through the cylinder-side and valve-side flow passages. For adjusting the flow rate of the pressurized fluid in the middle of the flow path, a method using a plug having an opening smaller in diameter than the flow path diameter may be employed. According to this embodiment, in the common connection between the cylinder housing and the valve housing, the plug is press-fitted into the flow path and the indented plug is fixed by caulking. It should be noted, however, that in the common connection, the annular sealing member is arranged to seal the flow passage between the two housings. Therefore, it is possible that the annular sealing member could be damaged by a can groove or burr of metal at the time of caulking, and the seal of the flow passages could be lost. Further, at the position where the plug is press-fitted, an opening having a diameter different from that of the flow passage has to be machined into the housing, requiring high processing accuracy. This possibly leads to increased production costs.

When Another method for adjusting the flow rate of a Pressurized fluids may make it possible its an opening incorporation on the housing to do so that the flow passage even made smaller. In this case, however, an opening processing to a low position with a small diameter drill necessary and such editing can be difficult or substantial be impossible.

Disclosure of the invention

It It is an object of the invention to solve the problems described above to solve and an oil path structure to provide the flow rate with a simple structure, while a reliable one Seal is ensured.

The Invention sees an oil path structure comprising: a first component having a connection surface and with a first oilway, the at the interface is open and formed in the component; a second component, the one formed therein and connected to the connection surface second oil route such that the first oil path and the second oil route communicate with each other; an annular sealing member, the between the first oilway and the second oil route seals; and an oil amount adjusting member, which limits an amount of oil flowing through an oil path. The second component has a receiving portion, which at one to the interface formed adjacent position and in the course of the second oil path is. In the receiving portion are the annular sealing member, the in contact with the interface is, and the Ölmengeneinstellbauteil arranged on a side opposite to the connecting surface side of the annular sealing member is positioned. The Ölmengeneinstellbauteil is between the annular Inserted sealing component and a wall surface of the second component, which defines the recording section.

In the aforementioned oil path structure, the oil amount adjusting member is disposed in the receiving portion together with the annular sealing member, and therefore it becomes unnecessary to provide a portion for arranging the oil amount adjusting member separately from the receiving portion. Further, the Ölmengeneinstellbauteil between the annular sealing member and a wall surface of the second component is inserted and Therefore, it is unnecessary to attach the Ölmengeneinstellbauteil to the second component. Consequently, the work performed on the second component can be simplified, and the assembly of the oil amount adjustment member is facilitated. Further, the annular sealing member is provided between the joining surface of the first member and the oil amount adjusting member while being in contact with the joining surface, and therefore a seal between the first and second oil paths can be reliably obtained.

Preferably is the ring-shaped Sealing component an O-ring and is the Ölmengeneinstellbauteil a disk. In the oil path structure formed in this way can be commercially available parts as well as the annular Sealing component, as well for the Ölmengeneinstellbauteil be used. That's why the manufacturing costs are reduced.

Further is caused to be supplied to the electric motor cooling oil by the first and the second cooling path flows. By formed in this way oil path structure, the amount of cooling oil that the Electric motor supplied should be set to a suitable amount with a simple structure be while a reliable one Seal is maintained.

As As described above, according to the invention, an oil path structure be provided, which is a flow adjustment with a simple construction allows, while a reliable one Seal ensures.

Brief description of the drawings

1 FIG. 12 is a cross-sectional view showing a power train (a drive device) to which the oil path structure is applied in accordance with an embodiment of the invention. FIG.

2 FIG. 15 is a cross-sectional view enlarging a position indicated in FIG 1 surrounded by a double dotted line II.

3 is an exploded perspective view showing an assembly of a disc and an O-ring, which in the recessed portion of 2 is arranged.

4 FIG. 12 is a cross-sectional view illustrating a force of the powertrain of FIG 1 acts on the O-ring.

5 is a cross-sectional view illustrating a force that is in a modification of the drive train of 1 acts on the O-ring.

Best ways to run the invention

One embodiment The invention will be described with reference to the figures. Everywhere in the drawings, to which reference will now be made the same or corresponding sections by the same reference numerals characterized.

An in 1 The drive train shown is mounted on an FR (front engine, rear-wheel drive) hybrid vehicle having as power sources an internal combustion engine such as a gasoline engine or a diesel engine and a rechargeable secondary battery.

Referring to 1 has the powertrain 10 a generator housing 31 that has a motor / generator 200 houses, and a motor housing 21 that has a motor / generator 300 accommodates and with the generator housing 31 assembled. The generator housing 31 and the motor housing 21 have cylindrical shapes. Between the engine / generator 200 and the motor / generator 300 is a power distribution mechanism 400 arranged. On a the power distribution mechanism 400 opposite side of the motor / generator 300 is an automatic transmission 500 arranged.

The engine / generator 200 is unlike the engine / generator 300 provided at the front of the vehicle. The engine / generator 200 has a stator 61 and a rotor 65 , The stator 61 is on an inner circumference of the generator housing 31 fastened by fastening a bolt or the like. At the generator housing 31 is a rotor shaft 66 rotatably supported, with a bearing is interposed. The rotor 65 is on the rotor shaft 66 attached.

The engine / generator 300 has a stator 81 and a rotor 85 , The stator 81 is on an inner circumference of the motor housing 21 fastened by fastening a bolt or the like. On the motor housing 21 is a rotor shaft 86 rotatably supported with an intermediate bearing. The rotor 85 is on the rotor shaft 86 attached. The stators 61 and 81 are formed, for example, by a stator core of laminated steel sheet and a copper wire wound around a tooth portion of the stator core.

The power distribution mechanism 400 is composed of a second planetary gear mechanism. The power distribution mechanism 400 is on a wave 51 , which is connected to an output shaft of the machine, on a rotor shaft 66 of the motor / generator 200 and on a wave 52 attached to the automatic transmission 500 connected is.

With this arrangement, the power generated by the machine is transmitted through the shaft 51 fed and through the power distribution mechanism 400 split in two ways. One is a way of the wave 52 rotates and a rear drive shaft through the automatic transmission 500 drives and the other is a way of the rotor shaft 66 , as well as the rotor 65 turns to in the engine / generator 200 to generate an electrical energy.

Depending on the running condition of the vehicle, the motor / generator charges 200 a battery, not shown, with the electrical power generated by the engine power or the electric power supplied to the motor / generator 300 to. At the beginning of the machine operation, the motor / generator acts 200 as a starting device, ie as an electric motor that rotates the output shaft of the machine and performs cranking.

The engine / generator 300 works with at least one of the electrical power stored in the battery and the electrical power generated by the motor / generator 200 is produced. In particular, in the motor / generator 300 generates a magnetic field when the stator 81 receives an electrical power supply. The generated magnetic field rotates the rotor 85 and the wave 52 turns accordingly. The driving force of the motor / generator generated in this way 300 is through the automatic transmission 500 transferred to the rear drive shaft. In this way, the motor / generator supports 300 the driving force of the machine and realizes a running of the vehicle with the electric power coming from the motor / generator 200 is supplied.

The powertrain 10 also has an electric oil pump 73 and a mechanical oil pump 72 that works, getting the power from the machine. In each of the engine case 21 and the generator housing 31 are a cooling oil path 22 and a cooling oil path 32 trained, with the cooling oil path 22 communicates. The pressure from the electric oil pump 73 or the mechanical oil pump 72 supplied cooling oil passes through the cooling oil path 22 and becomes the stator core of the stator 81 and a coil end 82 fed. Further, the cooling oil passes through the cooling oil path 22 to the cooling oil path 32 and becomes the stator core of the stator 61 and the coil end 62 fed.

Referring to 2 has the motor housing 21 a connection surface 21a at the the cooling oil path 22 is open and has the generator housing 31 a connection surface 31a at the the cooling oil path 32 is open. Towards connection surface 21a extends the cooling oil path 22 in one to the interface 21a orthogonal direction. Towards connection surface 31a extends the cooling oil path 32 in one direction, the connecting surface 31a crosses diagonally. The connecting surfaces 21a and 31a are connected such that the cooling oil paths 22 and 32 communicate with each other. At the position where the cooling oil paths 22 and 32 open to each other, the cooling oil paths extend in mutually different directions.

Further, in the generator housing 31 a recessed section 33 at a position in the course of the cooling oil path 32 educated. The recessed section 33 is in columnar form of the interface 31a indented trained and the recessed section 33a is through a floor surface 34 , which are parallel to the interface 31a at a prescribed depth from the joint surface 31a extends and from a side surface 35 defined, which is cylindrical between the peripheral edge of the bottom surface 34 and the interface 31a extends. The cooling oil path 32 leads approximately to the middle of the floor area 34 , In the recessed section 33 are a slice 41 and an O-ring 46 arranged.

Referring to the 2 and 3 is a smaller diameter opening 42 , as that of the cooling oil paths 22 and 32 , in the disk 41 educated. The disc 41 is provided such that the opening 42 with the opening of the cooling oil path 32 is aligned. The disc 41 adjoins the floor area 34 at. The disc 41 is formed of a metal such as iron or stainless steel. A commercial disc can as a disc 41 be used.

The O-ring 46 is about the disc 41 at the bottom surface 34 provided opposite side. The O-ring 46 is in a direction away from the ground surface 34 adjacent to the disk 41 arranged. The O-ring 46 is formed of an elastic member such as NBR (nitrile rubber). A commercial O-ring may be considered the O-ring 46 can be used, or a FIPG (in situ formed gasket) formed to have a ring shape can be used.

If the engine case 21 with the generator housing 31 is assembled, with the disc 41 and the O-ring 46 in the recessed section 33 are arranged, the disc is 41 in the recessed section 33 kept as they are between the floor area 34 and the O-ring 46 is inserted. Further, the O-ring 46 between disc 41 and interface 21a pressed and in pressure contact with both side surface 35 , as well as interface 21a brought. As a result, a seal between the cooling oil path 22 and the cooling oil path 32 produced.

If we take the outer diameter of the O-ring 46 through D1, the diameter of the disc 41 through D2, the diameter of the opening 42 by D3, the diameter of the recessed section 33 by D4 and the diameter of the cooling oil path 32 By way of example, D3 is D2, D4 is 18 mm, and D5 is 5 mm.

By such a structure, the flow rate of the cooling oil, that of the cooling oil path 22 in the cooling oil way 32 comes through the glass 41 limited. In this embodiment, the disc 41 between the floor area 34 and the O-ring 46 is inserted and will be in the recessed section 33 held. That's why it is not necessary for the disc 41 in the recessed section 33 is used by press fitting (and that a dimension adjustment of D4> D2 is possible). Consequently, it is easy to get the disc 41 in the recessed section 33 to arrange. Furthermore, at the position where the disc 41 is arranged, the machining accuracy of the recessed section 33 be rough, and that is why editing the recessed section 33 lighter.

If a commercial disc as a disc 41 are used, there are discs with different opening diameters, with a selection of a suitable is made possible. Therefore, the flow rate of the cooling oil can be limited to the optimum amount.

The O-ring 46 is in a level contact (face-to-face contact) with the disk 41 at the interface 21a provided opposite side. Therefore, compared with a member for restricting the flow rate of a cooling oil, which is fixed to the cooling path by caulking, the probability of any damage to the O-ring 46 smaller during or after installation. Therefore, the seal reliability between the cooling oil path 22 and the cooling oil path 32 be improved.

Referring to 4 are in the first embodiment of the O-ring 46 and the disc 41 arranged on both the upstream side, and on the downstream side of the cooling oil flow. Therefore, take in the recessed section 33 before the flow rate of cooling oil through the disc 41 is limited, the pressure of the cooling oil and therefore the O-ring 46 to the side surface 35 urged, as indicated by an arrow 101 is shown. This improves the seal between the cooling oil path 22 and the cooling oil path 32 ,

Referring to 5 It is assumed that in the example shown in the figure, the cooling oil from the cooling oil path 32 to the cooling oil path 22 flows and that the disc 41 and the O-ring 46 are arranged on both the upstream side, and on the downstream side of the cooling oil flow. Here presses the cooling oil through the cooling oil path 32 flows, the area of the disk 41 , and through the pressed disc 41 becomes the O-ring 46 to the interface 21a urged, as indicated by an arrow 102 is shown. As a result, the seal between the cooling oil path 22 and the cooling oil path 32 be improved.

The oil path structure of the embodiment has: a motor housing 21 as the first component, which is a connecting surface 21a and the cooling oil path 22 as having the first oil path leading to the interface formed therein 21a is open; a generator housing 31 as a second component, the cooling oil path 32 has as the second oil path formed therein and with the connection surface 21a is connected such that the cooling oil path 22 and the cooling oil path 32 communicate with each other; the O-ring 46 as an annular seal between the cooling oil path 22 and the cooling oil path 32 seals; and a slice 41 as an oil amount adjusting member limiting the amount of oil flowing through the cooling oil path. At the generator housing 31 is at a position adjacent to the interface 21a is, and in the course of a cooling oil path 32 the recess section 33 designed as a receiving section. In the recessed section 33 are the O-ring 46 in contact with the interface 21a and the disc 41 arranged at the side of the O-ring 46 is positioned, that of the interface 21a opposite. The disc 41 is between the O-ring 46 and the floor area 34 a wall surface of the generator housing 31 inserted the recessed section 33 Are defined.

In the oil path structure in accordance with the above-described embodiment, the disk is 41 together with the O-ring 46 in the recessed section 33 arranged. Therefore, it is unnecessary to position for picking up the disc 41 separately on the motor housing 21 or the generator housing 31 provided. Furthermore, the flow rate of the cooling oil that is the stator 61 is fed, freely changed by the diameter of the opening 42 is suitably selected. Therefore, it is unnecessary to use a drill for a particularly small diameter when the cooling oil path 32 is processed. For these reasons, editing a motor housing 21 and a generator housing 31 can be done quickly in a simple manner and therefore the manufacturing cost can be reduced.

Although the recessed section 33 in which the O-ring 46 and the disc 41 are arranged in the generator housing 31 is formed, it can be in the motor housing 21 be educated. Also in this case is the first disc 41 in the recessed section 33 arranged and the O-ring 46 is arranged to be between the disc 41 and the interface 31a to be penned.

Further is the oil path structure the invention not only on the cooling oil path through which the cooling oil flows, but also on an oil way applicable, by the lubricating oil or hydraulic oil flows. The oilway structure The invention may, for example, an oil path between a valve body, the performs a hydraulic pressure control of oil leading to the automatic transmission supplied and apply to a filter that allows the oil in an oil pan the valve body absorbed. When the valve body is formed by a combination of upper and lower bodies can the oil path structure on the oil route be applied between the upper and lower bodies.

The Embodiments, as described here are just examples and should not as limiting be interpreted. The scope of the invention is achieved by each of the claims with due consideration the written description of the embodiments determined and includes modifications within the meaning of and equivalences to the wording of the claims.

Industrial applicability

The Invention is mainly on a Ölmengeneinstellmechanismus applicable, which is provided on a vehicle.

Summary

A cooling oil path structure has: a motor housing ( 21 ) with a connection surface ( 21a ) and with a cooling oil path ( 22 ) located at the interface ( 21a ) is open and is formed in this; a generator housing ( 31 ), which has a self-contained and with the connecting surface ( 21a ) connected second cooling oil path ( 32 ) such that the cooling oil paths ( 22 . 32 ) communicate with each other; an O-ring ( 46 ) located between the cooling oil paths ( 22 . 32 ) seals; and a disc ( 41 ) which limits a flow rate of oil flowing through the cooling oil path. In the generator housing ( 31 ) is a recessed section ( 33 ) formed at one to the connection surface ( 21a ) adjacent position and in the course of the second cooling oil path ( 32 ) is trained. In the recessed section ( 33 ) are the O-ring ( 46 ) in contact with the interface ( 21a ), and the disc ( 41 ) arranged on one to the connecting surface ( 21a ) opposite side of the O-ring ( 46 ) is positioned. The disc ( 41 ) is between the O-ring ( 46 ) and a floor surface ( 34 ). Thus, an oil path structure can be provided which ensures a reliable seal and allows flow adjustment with a simple structure.

Claims (3)

Oil path structure with a first component ( 21 ) with a connection surface ( 21a ) and with a first oil path ( 22 ) located at the interface ( 21a ) is open and formed in the component; a second component ( 31 ) formed therein and with the interface ( 21a ) associated second oil path ( 32 ) such that the first oil path ( 22 ) and the second oil path ( 32 ) communicate with each other; an annular sealing component ( 46 ) between the first oil path ( 22 ) and the second oil path ( 32 ) seals; and a Ölmengeneinstellbauteil ( 41 ) that limits an amount of oil flowing through an oil path; the second component ( 31 ) a receiving section ( 33 ), which at one to the connection surface ( 21a ) adjacent position and in the course of the second oil path ( 32 ) is trained; in the receiving section ( 33 ) the annular sealing component ( 46 ) in contact with the interface ( 21a ), and the oil amount adjusting member (FIG. 41 ) located on one to the connecting surface ( 21a ) opposite side of the annular sealing component ( 46 ) is positioned; and the oil quantity adjustment component ( 41 ) between the annular sealing component ( 46 ) and a wall surface ( 34 ) of the second component ( 31 ) is inserted, which is the receiving section ( 33 ) Are defined. Oil path structure according to claim 1, wherein the annular sealing component ( 46 ) is an O-ring and the Ölmengeneinstellbauteil ( 41 ) is a disk. An oilway structure according to claim 1, wherein an engine / generator ( 200 . 300 ) to be supplied cooling oil through the first and the second oil path ( 22 . 32 ) flows.