JP2009030795A - Power transmission device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power transmission device having improved assembling efficiency by simplifying the shape of the core of an electromagnet. <P>SOLUTION: The power transmission device comprises a cylindrical outside rotating member 3, a tubular inside rotating member 5 arranged inside the outside rotating member 3, an interrupting part 7 for intermittence torque between the outside rotating member 3 and the inside rotating member 5, a coupling 23 consisting of the electromagnets 19 each having an electromagnetic coil 9, the core 11 supporting the electromagnetic coil 9, and a lead wire 13 for feeding power to the electromagnetic coil 9, and arranged opposing each other in the radial direction with air gap spaces 15, 17 formed between the outside rotating member 3 and itself, and an intermittent operation part 21 for intermittent operation of the interrupting part 7 with a line of magnetic force permeating through the core 11 and the outside rotating member 3 when the electromagnetic coil 9 is excited, a static member 25 opposed to the coupling 23 in the axial direction, and an isolating member 27 arranged between the outside rotating member 3 and the static member 25 for isolating the outside space of the outside rotating member 3 from the air gap spaces 15, 17. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power transmission device used in a vehicle.

Patent Document 1 describes a driving force transmission device including a friction clutch that is operated by an electromagnet and intermittently connects an inner rotating member and an outer rotating member. This driving force transmission device includes a deflector and an oil seal as a foreign matter intrusion preventing mechanism for preventing foreign matter from entering a gap (air gap) formed between the yoke (core) of the electromagnet and the outer rotating member. . The oil seal is fixed to the inner periphery of an annular recess formed in the yoke, and the seal piece is in sliding contact with the deflector and the rear housing. This foreign matter intrusion prevention mechanism prevents foreign matter from entering the gap.
JP 2003-139164 A

  However, in the above-described driving force transmission device, the yoke shape is complicated, such as the annular recess for fixing the oil seal to the yoke of the electromagnet, and the cost for processing the yoke has increased. .

  In addition, when replacing the oil seal, the oil seal cannot be removed unless the entire electromagnet is removed from the apparatus, and the assemblability of the entire apparatus is reduced.

  Accordingly, an object of the present invention is to provide a power transmission device that can simplify the shape of the core of the electromagnet and can improve the assemblability.

  The power transmission device according to claim 1 is configured such that a torque is generated between the cylindrical outer rotating member, the shaft-shaped inner rotating member disposed inside the outer rotating member, and the outer rotating member and the inner rotating member. An electromagnet having an intermittent portion, an electromagnetic coil, a core that supports the electromagnetic coil, and a lead wire that feeds the electromagnetic coil, and an air magnet that forms an air gap space between the outer rotating member. A coupling having an intermittent operation portion for intermittently operating the intermittent portion by a magnetic field line that passes through the core and the outer rotating member when the electromagnetic coil is excited, and the coupling is disposed opposite to the coupling in the axial direction. A stationary system member, and an isolation member that is disposed between the outer rotating member and the stationary system member and isolates the outer space of the outer rotating member and the air gap space are provided.

  A second aspect of the present invention is the power transmission device according to the first aspect, wherein the stationary system member is formed with a detent portion of the electromagnet.

  The invention according to claim 3 is the power transmission device according to claim 1 or 2, wherein the stationary system member is formed integrally with a support member that supports a connecting portion that is connected to the coupling, and the support member. And a fixing member to which the isolation member is fixed.

  The invention according to claim 4 is the power transmission device according to claim 3, wherein the support member and the fixing member are formed as separate members and are integrally formed by a fixing portion, and the support member and the fixing member Between the two, a sealing means is arranged.

  A fifth aspect of the present invention is the power transmission device according to the third aspect, wherein the supporting member and the fixing member are formed continuously and integrally.

  A sixth aspect of the present invention is the power transmission device according to any one of the third to fifth aspects, wherein the detent portion is formed on the fixing member.

  A seventh aspect of the present invention is the power transmission device according to any one of the third to fifth aspects, wherein the detent portion is fixed to the fixed member and engages with the support member. It has the member.

  The invention according to claim 8 is the power transmission device according to any one of claims 3 to 5, wherein the rotation preventing portion is formed on the support member.

  A ninth aspect of the present invention is the power transmission device according to any one of the first to eighth aspects, wherein the lead is formed on the stationary member and takes out the lead wire from the air gap space to the outer space. It is characterized by having a wire extraction part.

  A tenth aspect of the present invention is the power transmission device according to any one of the first to ninth aspects, wherein the outer rotating member is connected via a coupling fixing portion and a coupling fixing member that fixes the coupling fixing portion. The first rotating member and the second rotating member are connected so as to be integrally rotatable, and the separating member has the connecting and fixing member.

  In the power transmission device according to the first aspect, since the separating member that separates the outer space and the air gap space of the outer rotating member is disposed between the outer rotating member and the stationary system member, the shape of the core of the electromagnet is complicated. The shape of the core of the electromagnet can be simplified. Further, when removing the separating member, it is not necessary to remove the electromagnet from the apparatus, and the assembling property can be improved.

  Since the power transmission device according to the second aspect is formed on the stationary system member with the rotation stop portion facing each other, the power transmission device can be reliably and easily assembled.

  The power transmission device according to claim 3 can simplify the structure centering on the function of the conventional support member by omitting the function of fixing the isolation member to the support member. On the other hand, the fixing member can improve the degree of freedom of shape setting according to the shape of the isolation mechanism, and can reliably perform the isolation function.

  In the power transmission device according to the fourth aspect, since the support member and the fixing member are formed as separate members and are integrally formed by the fixing portion, the positional relationship between the support member and the fixing member can be appropriately maintained. . Further, by arranging the sealing means, the space can be partitioned by the separating member at one end side of the fixing member and by the sealing means at the other end side.

  Since the power transmission device of claim 5 does not use a separate member, the concentricity between the outer rotating member and the stationary system member can be easily maintained, and the isolation function can be maintained high. Further, no sealing means is required.

  In the power transmission device according to the sixth aspect, by utilizing a part of the fixing member, it is possible to easily form the rotation preventing portion adjacent to the core and reliably prevent the rotation.

  In the power transmission device according to the seventh aspect, by omitting the anti-rotation function from the fixing member, the configuration can be simplified, and the degree of freedom in setting the shape can be improved by matching the anti-rotation member with the shape of the anti-rotation portion.

  In the power transmission device according to the eighth aspect, since the rotation preventing portion is formed on the support member, the number of parts can be reduced and the assembling property can be improved.

  In the power transmission device according to the ninth aspect, since the lead wire take-out portion is formed on the stationary member, the degree of freedom in handling the lead wire can be improved.

  The power transmission device according to claim 10 includes a first rotating member and a second rotating member that are connected to each other so that the outer rotating member is integrally rotatable via a connecting and fixing portion and a connecting and fixing member that fixes the connecting and fixing portion. Since the separating member has the connecting and fixing member, the connecting and fixing member can be used as the separating member, and the number of parts can be reduced.

  First, a power system of a vehicle to which the power transmission device 1 of the first embodiment is applied will be described with reference to FIG.

  As shown in FIG. 1, the power system of the vehicle includes an engine 401 as a prime mover, a transmission 403 as a speed change mechanism, a front differential 405, front axles 407 and 409, front wheels 411 and 413, a transfer 415, 1 rear wheel side propeller shaft 417, power transmission device 1, second rear wheel side propeller shaft 419, rear differential 421, rear axles 423 and 425, rear wheels 427 and 429, and the like.

  The driving force of the engine 401 is transmitted from the transmission 403 to the front differential 405 through the differential case 431, distributed from the front axles 407, 409 to the front wheels 411, 413 through the pair of side gears 433, 435, and transmitted to the differential case 431. The transmitted driving force is transmitted from the hollow shaft 437 to the first rear wheel side propeller shaft 417 via the transmission gear set 439 and the conversion gear set 441, and the second rear wheel side propeller shaft 419 is transmitted from the power transmission device 1. To the rear differential 421 and distributed from the rear axles 423 and 425 to the rear wheels 427 and 429.

  Then, the front wheel side and the rear wheel side are intermittently connected by the coupling 23 of the power transmission device 1, and when the coupling 23 is connected, the vehicle is in a four-wheel drive state of front and rear wheel drive, and the connection of the coupling 23 is released. Then, the vehicle is in a two-wheel drive state of front wheel drive. Hereinafter, the power transmission device 1 will be described.

(First embodiment)
The first embodiment will be described with reference to FIG.

  The power transmission device 1 according to the present embodiment includes a cylindrical outer rotating member 3, a shaft-shaped inner rotating member 5 disposed inside the outer rotating member 3, and the outer rotating member 3 and the inner rotating member 5. Air gap spaces 15, 17 between the outer rotating member 3, which includes the intermittent portion 7 for intermittent torque, the electromagnetic coil 9, the core 11 that supports the electromagnetic coil 9, and the lead wire 13 that supplies power to the electromagnetic coil 9. And an intermittent operation portion 21 for intermittently operating the intermittent portion 7 by lines of magnetic force that pass through the core 11 and the outer rotating member 3 when the electromagnetic coil 9 is excited. A coupling 23; a stationary member 25 that is axially opposed to the coupling 23; an outer space of the outer rotating member 3 that is disposed between the outer rotating member 3 and the stationary member 25; and an air gap space 15, Separation from 17 And a member 27.

  In addition, the stationary member 25 is formed with a detent 29 of the electromagnet 19.

  Furthermore, the stationary system member 25 includes a support member 33 that supports the connecting portion 31 that is connected to the coupling 23, and a fixing member 35 that is formed integrally with the support member 33 and to which the isolation member 27 is fixed. ing.

  Further, the support member 33 and the fixing member 35 are formed as separate members and are integrally formed by the fixing portion 37.

  Further, the rotation preventing portion 29 is formed on the fixing member 35.

  In addition, a lead-out portion 39 of the lead wire 13 that is formed in the stationary member 25 and takes out the lead wire 13 from the air gap spaces 15 and 17 to the outer space is provided.

  As shown in FIG. 2, the coupling 23 includes a cylindrical outer rotating member 3, a shaft-shaped inner rotating member 5, an intermittent portion 7, an electromagnet 19, and an intermittent operation portion 21.

  The cylindrical outer rotating member 3 includes a clutch housing 41 and a rotor housing 43. The clutch housing 41 is supported by a stationary member 47 via a bearing 45. The clutch housing 41 is splined by a spline portion 51 and a member 49 connected to the first rear wheel side propeller shaft 417 (FIG. 1). The rotor housing 43 is splined to the inner periphery of the clutch housing 41 with a spline portion 53 formed on the outer peripheral side. An O-ring 55 is disposed between the clutch housing 41 and the rotor housing 43 adjacent to the spline portion 53. An inner rotating member 5 is arranged on the inner peripheral side of the outer rotating member 3.

  The shaft-like inner rotating member 5 is supported by the stationary member 47 through the bearing 57 and the outer rotating member 3, and is supported by the stationary member 25 through the bearing 59. The inner rotating member 5 is splined by a member 61 connected to the second rear wheel side propeller shaft 419 (FIG. 1) and a spline portion as a connecting portion 31. Further, an X ring 63 is disposed between the inner rotating member 5 and the rotor housing 43. Between the inner rotating member 5 and the outer rotating member 3, an intermittent portion 7 is disposed.

  The intermittence portion 7 is composed of a main clutch 69 disposed between the outer rotating member 3 and the inner rotating member.

  The main clutch 69 is composed of a plurality of clutch plates connected to the inner periphery of the outer rotating member 3 and the outer periphery of the inner rotating member 5. The main clutch 69 is moved by the intermittent operation unit 21 by energization of the electromagnet 19, and when the main clutch 69 is connected, the outer rotating member 3 and the inner rotating member 5 are connected, that is, the front wheel side and the rear wheel. And the driving force of the engine 401 (FIG. 1) is transmitted to the rear wheel side.

  The electromagnet 19 includes an electromagnetic coil 9, a core 11, and a lead wire 13. The electromagnetic coil 9 is supported by the core 11. Air gap spaces 15 and 17 are formed between the core 11 and the rotor housing 43 in the radial direction. The air gap spaces 15 and 17 can form a magnetic flux loop through which magnetic lines of force generated by energization of the electromagnet 19 pass through the rotor housing 43, the pilot clutch 65, and the armature 67. The lead wire 13 is connected to the electromagnetic coil 9 and is drawn out to the stationary system member 25 side through a hole 71 formed in the core 11. The lead wire 13 is connected to and controlled by a controller (not shown). The electromagnet 19 is supported by the rotor housing 43 in the radial direction via a bearing 73 and supported by the rotor housing 43 in the axial direction via a snap ring 75.

  The intermittent operation unit 21 includes a pilot clutch 65, an armature 67, a cam ring 77, a pressure plate 79, and a cam ball 81.

  The pilot clutch 65 is composed of a plurality of clutch plates connected to the inner periphery of the outer rotating member 3 and the outer periphery of the cam ring 77. The armature 67 is connected to the inner periphery of the outer rotating member 3, and the magnetic field lines generated by energization of the electromagnet 19 are transmitted through the rotor housing 43, the pilot clutch 65, and the armature 67, and are axially moved to the electromagnet 19 side. The clutch 65 is engaged.

  The cam ring 77 is supported on the outer periphery of the inner rotating member 5, and a bearing 83 that receives a cam thrust force is disposed between the cam ring 77 and the rotor housing 43. The pressure plate 79 is supported on the outer periphery of the inner rotating member 5. The cam ball 81 is disposed between the cam ring 77 and the pressure plate 79. When the pilot clutch 65 is engaged, a differential rotation is generated between the cam ring 77 and the pressure plate 79 to generate a cam thrust force. The pressure plate 79 is moved in the axial direction, and the main clutch 69 is engaged.

  A stationary member 25 is arranged at a position facing the coupling 23 in the axial direction.

  The stationary system member 25 includes a support member 33 and a fixing member 35. The support member 33 supports the connecting portion 31 via the bearing 59. The fixing member 35 is press-fitted to the support member 33 by the fixing portion 37 and is formed integrally with the support member 33. An anti-rotation portion 29 that prevents the electromagnet 19 from rotating is fixed to the fixing member 35 with a bolt 85. Further, the fixing member 35 is formed with an extraction portion 39 for taking out the lead wire 13 from the air gap spaces 15 and 17 to the outer space. A grommet 87 is provided between the take-out portion 39 and the lead wire 13, and the air gap spaces 15 and 17 are sealed.

  An isolation member 27 that isolates the outer space of the outer rotating member 3 and the air gap spaces 15 and 17 is disposed between the stationary member 25 and the coupling 23.

  The isolation member 27 includes a seal member 89 and a dust cover 91. The seal member 89 is fixed by being press-fitted into the fixing member 35 on the outer peripheral side. The seal member 89 is formed with lip portions 93, 95, and 97, and the lip portions 93 and 95 on the inner peripheral side are in contact with the outer periphery of the rotor housing 43 and the lip portion 97 is in contact with the dust cover 91. Yes. The dust cover 91 is fixed so that the inner peripheral side is press-fitted into the rotor housing 43 and the side surface is in contact with the clutch housing 41. Such a separating member 27 can prevent foreign matter from entering the air gap spaces 15 and 17. Further, when removing the isolation member 27 from the apparatus, it is only necessary to remove the fixing member 35 from the apparatus.

  In such a power transmission device 1, the isolation member 27 that separates the outer space of the outer rotating member 3 and the air gap spaces 15 and 17 is disposed between the outer rotating member 3 and the stationary member 25. There is no need to complicate the shape of the core 11 of the electromagnet 19, and the shape of the core 11 of the electromagnet 19 can be simplified. Further, when removing the separating member 27, it is not necessary to remove the electromagnet 19 from the apparatus, and the assembling property can be improved.

  Moreover, since the rotation prevention part 29 is formed in the opposing stationary member 25, it can assemble reliably and easily.

  Furthermore, by omitting the function of fixing the isolation member 27 to the support member 33, the structure centering on the function of the conventional support member can be simplified. On the other hand, the fixing member 35 can improve the degree of freedom in setting the shape according to the shape of the isolation mechanism, and can reliably perform the isolation function.

  Further, since the support member 33 and the fixing member 35 are formed as separate members and are integrally formed by the fixing portion 37, the positional relationship between the support member 33 and the fixing member 35 can be appropriately maintained.

  Further, since the anti-rotation portion 29 is formed on the fixing member 35, the anti-rotation portion 29 is easily formed adjacent to the core 11 by using a part of the fixing member 35, and the anti-rotation portion is surely prevented. It can be carried out.

  Further, since the lead-out portion 39 of the lead wire 13 is formed in the stationary member 25, the degree of freedom in handling the lead wire 13 can be improved.

  Next, a vehicle power system to which the power transmission devices of the second to fourth embodiments are applied will be described with reference to FIG. Here, the power transmission device 101 of the second embodiment is used, but the same applies to the power system of a vehicle to which the power transmission device of another embodiment is applied.

  As shown in FIG. 3, the power system of the vehicle includes an engine 501 and an electric motor 503 as a prime mover, a transmission 505 as a speed change mechanism, a front differential 507, front axles 509 and 511, front wheels 513 and 515, It includes a transfer 517, a rear wheel side propeller shaft 519, a power transmission device 101, a rear differential 521, rear axles 523 and 525, rear wheels 527 and 529, and the like.

  The driving force of the engine 501 and the electric motor 503 is transmitted from the transmission 505 to the front differential 507 via the differential case 531 and distributed from the front axles 509 and 511 to the front wheels 513 and 515 via the pair of side gears 533 and 535. The driving force transmitted to the differential case 531 is transmitted from the hollow shaft 537 to the rear-wheel side propeller shaft 519 via the transmission gear set 539 and the conversion gear set 541, transmitted from the power transmission device 101 to the rear differential 521, and rear axle 523. , 525 to the rear wheels 527, 529.

  The front wheel side and the rear wheel side are intermittently connected by the coupling 23 of the power transmission device 101, and when the coupling 23 is connected, the vehicle is in a four-wheel drive state of front and rear wheel drive, and the connection of the coupling 23 is released. Then, the vehicle is in a two-wheel drive state of front wheel drive. Hereinafter, the power transmission device 101 will be described.

(Second embodiment)
A second embodiment will be described with reference to FIG.

  In the power transmission device 101 of the present embodiment, the support member 103 and the fixing member 105 are formed as separate members and integrally formed by the fixing portion 107, and a seal is provided between the support member 103 and the fixing member 105. Means 109 are arranged.

  The anti-rotation portion 111 includes an anti-rotation member 113 that is fixed to the fixing member 105 and that engages with the support member 103. In addition, although the same code | symbol is described to the structure same as 1st Example and description is abbreviate | omitted, since it is the same structure as 1st Example, the effect acquired is the same.

  As shown in FIG. 4, the support member 103 supports the power transmission shaft 115 connected to the rear differential 521 (FIG. 3) side via a bearing 117. The power transmission shaft 115 is splined to the inner rotating member 5 by a spline portion 119 and supports the inner rotating member 5 by a press-fit support portion 121. The end of the power transmission shaft 115 passes through the inner rotating member 5 and supports the outer rotating member 3 via a bearing 123. That is, the power transmission shaft 115 supported by the support member 103 penetrates the coupling 23 and supports the coupling 23. The outer rotating member 3 is connected to the rear wheel side propeller shaft 519 (FIG. 3). An X ring 125 is disposed between the inner rotating member 5 and the outer rotating member 3. A fixing member 105 is provided on the support member 103.

  The fixing member 105 has a separating member 27 disposed on one end side and a fixing portion 107 formed on the outer periphery on the other end side. The fixing member 105 is press-fitted to the support member 103 by the fixing portion 107 and is formed integrally with the support member 103. Further, a sealing means 109 is disposed between the support member 103 and the fixing member 105. An anti-rotation member 113 that prevents the electromagnet 19 from rotating is fixed to the fixing member 105 with bolts 127. The rotation preventing member 113 is integrally formed with an engaging portion 129 and is engaged with the support member 103. With this engaging portion 129, the electromagnet 19 can be prevented from rotating only by the rotation preventing member 113.

  In such a power transmission device 101, the isolation member 27 that separates the outer space of the outer rotating member 3 and the air gap spaces 15 and 17 is disposed between the outer rotating member 3 and the stationary system member 25. There is no need to complicate the shape of the core 11 of the electromagnet 19, and the shape of the core 11 of the electromagnet 19 can be simplified. Further, when removing the separating member 27, it is not necessary to remove the electromagnet 19 from the apparatus, and the assembling property can be improved.

  Further, since the support member 103 and the fixing member 105 are formed as separate members and are integrally formed by the fixing portion 107, the positional relationship between the support member 103 and the fixing member 105 can be appropriately maintained. Further, by arranging the sealing means 109, the space can be partitioned by the separating member 27 on one end side of the fixing member 105 and by the sealing means 109 on the other end side.

  Furthermore, by omitting the anti-rotation function from the fixing member 105, the configuration can be simplified, and the degree of freedom in setting the shape can be improved by matching the anti-rotation member 113 to the shape of the anti-rotation portion.

(Third embodiment)
A third embodiment will be described with reference to FIG.

  In the power transmission device 201 of this embodiment, the rotation preventing portion 203 is formed on the fixing member 205. The same components as those in the first and second embodiments are denoted by the same symbols, and the description thereof will be omitted. However, since the configuration is the same as those in the first and second embodiments, the obtained effects are the same. .

  As shown in FIG. 5, the fixing member 205 has an isolation member 27 disposed on one end side, and a fixing portion 207 formed on the inner periphery on the other end side. The fixing member 205 is press-fitted into the support member 209 at the fixing portion 207 and is formed integrally with the support member 209. Note that the bolt 211 may be used to fix the fixing member 205 and the support member 209.

  The anti-rotation portion 203 includes a convex portion 213 formed on the core 11 and a concave portion 215 formed on the fixing member 205. The anti-rotation portion 203 prevents the electromagnet 19 from rotating by bringing the convex portion 213 and the concave portion 215 into contact with each other.

  In such a power transmission device 201, the isolation member 27 that separates the outer space of the outer rotating member 3 and the air gap spaces 15 and 17 is disposed between the outer rotating member 3 and the stationary member 25. There is no need to complicate the shape of the core 11 of the electromagnet 19, and the shape of the core 11 of the electromagnet 19 can be simplified. Further, when removing the separating member 27, it is not necessary to remove the electromagnet 19 from the apparatus, and the assembling property can be improved.

  Further, by using a part of the fixing member 205 for the rotation preventing portion 203, the rotation preventing portion 203 can be easily formed adjacent to the core 11, and the rotation can be reliably prevented.

(Fourth embodiment)
A fourth embodiment will be described with reference to FIG.

  In the power transmission device 301 of this embodiment, the support member 303 and the fixing member 305 are integrally formed continuously.

  Further, the rotation preventing portion 307 is formed on the support member 303.

  Furthermore, a lead-out portion 311 of the lead wire 13 that is formed in the stationary member 309 and takes out the lead wire 13 from the air gap spaces 15 and 17 to the outer space is provided. The same components as those in the first and second embodiments are denoted by the same symbols, and the description thereof will be omitted. However, since the configuration is the same as those in the first and second embodiments, the obtained effects are the same. .

  As shown in FIG. 6, the support member 303 and the fixing member 305 are integrally formed continuously, and the stationary system member 309 is constituted by one member. The stationary system member 309 supports the power transmission shaft 115 through the bearing 117 at the support member 303 and fixes the isolation member 313 at the fixing member 305. The sealing member 315 of the separating member 313 is fixed by being press-fitted into the fixing member 305 at the inner peripheral side, abutting the lip portions 317 and 319 on the outer peripheral side with the inner periphery of the rotor housing 321, and covering the lip portion 323 with a dust cover. 325 abuts. The dust cover 325 is fixed by press-fitting the inner periphery on one end side into the portion of the fixing member 305, and the inner periphery on the other end side covers the outer periphery of the rotor housing 321.

  The anti-rotation part 307 is formed on a stationary member 309 made of one member. For this reason, it is the same as the anti-rotation part 307 being formed in the support member 303. The anti-rotation portion 307 is configured by bringing an anti-rotation member 327 fixed to the core 11 into contact with an end portion of the stationary system member 309. Further, a notch 329 is provided at the end of the stationary system member 309, and the lead wire 13 is routed. The lead wire 13 is taken out from an extraction portion 311 formed in the stationary member 309 to an external space, and a grommet 331 is provided between the extraction portion 311 and the lead wire 13, and the air gap spaces 15 and 17 are formed. Sealed.

  In such a power transmission device 301, the isolation member 313 that separates the outer space of the outer rotating member 3 and the air gap spaces 15 and 17 is disposed between the outer rotating member 3 and the stationary system member 309. There is no need to complicate the shape of the core 11 of the electromagnet 19, and the shape of the core 11 of the electromagnet 19 can be simplified. Further, when removing the separating member 313, it is not necessary to remove the electromagnet 19 from the apparatus, and the assembling property can be improved.

  Further, since the rotation preventing portion 307 is formed on the support member 303, the number of parts can be reduced and the assembling property can be improved.

  Furthermore, since the lead-out portion 311 of the lead wire 13 is formed on the stationary member 309, the degree of freedom in handling the lead wire 13 can be improved.

(5th Example)
A fifth embodiment will be described with reference to FIG.

  In the power transmission device 601 of this embodiment, the support member 603 and the fixing member 605 are formed as separate members and are integrally formed by the fixing portion 607, and a liquid is interposed between the support member 603 and the fixing member 605. A gasket (sealing means) is applied.

  The anti-rotation portion 609 has an anti-rotation member 611 that is fixed to the fixing member 605 and that engages with the support member 603.

  Further, the outer rotating member 3 includes a clutch housing 41 (first rotating member) and a rotor housing 43 (connected to each other via a connecting and fixing portion 613 and a connecting and fixing member 615 that fixes the connecting and fixing portion 613 so as to be integrally rotatable. The isolation member 27 includes a connection fixing member 615. In addition, although the same code | symbol is described to the structure same as 1st Example and description is abbreviate | omitted, since it is the same structure as 1st Example, the effect acquired is the same.

  This power transmission device 601 is arranged on the rear differential 521 (FIG. 3) side as in the second to fourth embodiments, and the configuration of this embodiment is applied to the power transmission devices of other embodiments. Can be applied.

  As shown in FIG. 7, the support member 603 supports a power transmission shaft 617 connected to the rear differential 521 via a bearing 619. The power transmission shaft 617 is connected and fixed to the drive pinion 623 of the rear differential 521 by a lock nut 621. The power transmission shaft 617 is splined to the inner rotating member 5 by a spline portion 625, and both end portions in the axial direction inserted into the inner rotating member 5 are press-fit support portions 627 and 629 to connect the inner rotating member 5. The end is supported by a snap ring 631. The power transmission shaft 617 supports the outer rotating member 3 via a bearing 633 arranged on the outer peripheral side of the inner rotating member 5. Thus, the power transmission shaft 617 supports the coupling 23. In addition, the support member 603 is integrally provided with a fixing member 605 that is formed separately from the support member 603.

  In the fixing member 605, the separating member 27 is disposed on one end side, and a fixing portion 607 is formed on the outer periphery on the other end side. The fixing member 605 is press-fitted to the support member 603 by the fixing portion 607 and is formed integrally with the support member 603. In addition, a liquid gasket as a sealing means is applied between the support member 603 and the fixing member 605 in the fixing portion 607. Further, the fixing member 605 is provided with a detent portion 609 that prevents the electromagnet 19 from rotating.

  The anti-rotation part 609 has an anti-rotation member 611 that engages with the support member 603. The anti-rotation member 611 is formed integrally with a bolt 635 that fixes the fixing member 605 to the electromagnet 19. The anti-rotation member 611 extends in the axial direction at the head of the bolt 635 and engages with the support member 603. A seal ring 637 is provided between the fixing member 605 and the bolt 635. In such an anti-rotation portion 609, the electromagnet 19 can be easily anti-rotated by integrally forming the anti-rotation member 611 with the bolt 611.

  A seal ring 641 is provided between the lead wire 13 and the lead-out portion 639 for taking out the lead wire 13 of the fixing member 605. Further, the outer rotating member 3 is connected to the rear wheel side propeller shaft 519 (FIG. 3) side through a joint 645 fixed by a bolt 643. A seal plug 647 is disposed between the joint 645 and the outer rotating member 5 (a recess formed at the end of the outer rotating member 5), and between the inner rotating member 5 and the outer rotating member 3. , An X ring 649 is arranged.

  The outer rotating member 3 composed of the clutch housing 41 and the rotor housing 43 is fixed by a connection fixing portion 613 and a connection fixing member 615 so as to be integrally rotatable. The connection fixing portion 613 is configured by screwing a screw portion 651 formed on the inner periphery of the clutch housing 41 and a screw portion 653 formed on the outer periphery of the rotor housing 43. The connection fixing member 615 has a lock nut function of fixing the connection fixing portion 613 by screwing the inner peripheral side thereof to the screw portion 653 of the rotor housing 43. The connection fixing member 615 is formed in such a shape that the outer peripheral side covers the outer peripheral side of the fixing member 605, and the lip portion 97 of the seal member 89 is in contact therewith. By using the connection fixing member 615 as the separating member 27 in this way, it is possible to have two functions of fixing the connection fixing portion 613 of the outer rotating member 3 and preventing foreign matter from entering the air gap spaces 15 and 17. .

  In the other embodiment described above, the connecting portion between the clutch housing 41 and the rotor housing 43 in the outer rotating member 3 is a spline portion. In this spline portion, the axial end is fixed by welding or the like. Has been. Further, the spline portion may be a screw portion, and the axial end portion of the screw portion may be fixed by welding or the like.

  In such a power transmission device 601, since the support member 603 and the fixing member 605 are formed as separate members and are integrally formed by the fixing portion 607, the positional relationship between the support member 603 and the fixing member 605 is appropriately set. Can be held. Further, by applying a liquid gasket to the fixing portion 607, the space can be partitioned by the separating member 27 on one end side of the fixing member 605 and the liquid gasket on the other end side.

  Further, since the rotation preventing member 611 is integrally formed with the bolt 635, the number of parts can be reduced, and the structure related to the rotation prevention of the electromagnet 19 can be simplified.

  Further, the outer rotating member 3 includes a clutch housing 41 and a rotor housing 43 that are connected so as to be integrally rotatable via a connecting and fixing portion 613 and a connecting and fixing member 615 that fixes the connecting and fixing portion 613. Since the connecting and fixing member 615 is provided, the connecting and fixing member 615 can be used as the separating member 27, and the number of parts can be reduced.

  In addition, although the intermittent part 7 illustrated the friction clutch, it is not restricted to this, Various forms, such as a meshing clutch, a viscous fluid clutch, and a clutch using fluid pump resistance, are employable.

  In addition, the armature 67 as a part of the intermittent operation unit 21 of each embodiment is disposed inside the outer rotating member 3. The armature 67 is disposed outside the outer rotating member 3, and the outer rotating member 3. It can also be arranged so as to be integrally rotated so as to be capable of relative movement in the axial direction, and can be interlocked with other intermittent operation parts arranged inside the outer rotating member 3. In this case, since the armature transmits the lines of magnetic force together with the core of the electromagnet, it can be regarded as a part of the outer rotating member, and other characteristic configurations of the present invention can be similarly applied to the periphery. Although not illustrated in the drawings, the present invention can be adapted to many power transmission devices as described above.

It is the schematic which shows the motive power system of the vehicle with which the power transmission device of 1st Example is applied. It is sectional drawing of the power transmission device of 1st Example. It is the schematic which shows the motive power system of the vehicle with which the power transmission device of the 2nd-4th Example is applied. It is sectional drawing of the power transmission device of 2nd Example. It is sectional drawing of the power transmission device of 3rd Example. It is sectional drawing of the power transmission device of 4th Example. (A) It is sectional drawing of the power transmission device of 5th Example. (B) It is a principal part enlarged view of Fig.5 (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101,201,301,601 ... Power transmission device 3 ... Outer rotating member 5 ... Inner rotating member 7 ... Intermittent part 9 ... Electromagnetic coil 11 ... Core 13 ... Lead wire 15, 17 ... Air gap space 19 ... Electromagnet 21 ... Intermittent operation part 23 ... Coupling 25, 309 ... Static system member 27, 313 ... Isolation member 29, 111, 203, 307 ... Anti-rotation part 31 ... Connection part 33, 103, 209, 303 ... Support member 35, 105, 205 , 305... Fixed member 37, 107, 207... Adhering portion 39, 311... Extracting portion 41.
43 ... Rotor housing (second rotating member)
109: Sealing means 113, 327: Anti-rotation member 613: Connection fixing portion 615: Connection fixing member

Claims (10)

  A cylindrical outer rotating member, a shaft-shaped inner rotating member disposed inside the outer rotating member, an intermittent portion for interrupting torque between the outer rotating member and the inner rotating member, and an electromagnetic coil; An electromagnet having a core that supports the electromagnetic coil and a lead wire that supplies power to the electromagnetic coil and that is disposed opposite to the outer rotating member to form an air gap space; and when the electromagnetic coil is excited A coupling having an intermittent operation portion for intermittently operating the intermittent portion by a magnetic force line passing through the core and the outer rotating member; a stationary member disposed to face the coupling in the axial direction; and the outer rotating member And a stationary member arranged between the stationary system member and the outer space of the outer rotating member and the air gap space. The power transmission device according to claim 1,
The stationary transmission member is formed with a detent portion of the electromagnet. The power transmission device according to claim 1 or 2,
The stationary member includes a support member that supports a connecting portion that is connected to the coupling, and a fixing member that is formed integrally with the support member and to which the isolation member is fixed. Power transmission device. The power transmission device according to claim 3,
The supporting member and the fixing member are formed as separate members and are integrally formed by a fixing portion, and a sealing means is disposed between the supporting member and the fixing member. Transmission device. The power transmission device according to claim 3,
The power transmission device, wherein the support member and the fixing member are continuously formed integrally. The power transmission device according to any one of claims 3 to 5,
The power transmission device, wherein the rotation preventing portion is formed on the fixing member. The power transmission device according to any one of claims 3 to 5,
The said rotation prevention part has a rotation prevention member engaged with the said supporting member while it adheres to the said fixing member, The power transmission device characterized by the above-mentioned. The power transmission device according to any one of claims 3 to 5,
The power transmission device, wherein the rotation preventing portion is formed on the support member. The power transmission device according to any one of claims 1 to 8,
A power transmission device, comprising: a lead wire take-out portion formed on the stationary system member for taking out the lead wire from the air gap space to the outer space. The power transmission device according to any one of claims 1 to 9,
The outer rotating member includes a first rotating member and a second rotating member that are connected to each other via a connecting and fixing portion and a connecting and fixing member that fixes the connecting and fixing portion, and the isolation member. Has the connection fixing member.

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