JP5063202B2 - Rotating body assembly structure, assembling method, driving force transmission device, and rotating body - Google Patents

Description

The present invention relates to an assembling structure, assembling method, a driving force transmission device, and a rotating body for a rotating body used for a transfer, a differential device, and the like.

  As a conventional driving force transmission device, there is a device that transmits driving force between a drive pinion gear of a drive pinion shaft and a ring gear of a rear differential device as described in Patent Document 1. .

  In this driving force transmission device, a drive pinion shaft and a differential case of a rear differential device are rotatably supported by a stationary carrier case by a bearing. A shim is incorporated between the bearing supporting the differential case and the carrier case in the axial direction, and an axial preload is applied to the rotational support of the differential case.

  As shown in FIG. 1 of Patent Document 1, the carrier case is provided with a cover on the side of the rotating shaft of the rear differential device, and the carrier case from the direction along the rotating shaft center. Can be assembled.

  In such assembly, the shim can be assembled from the direction along the rotational axis of the rear differential device.

  However, as shown in FIG. 6 of Patent Document 1, the carrier case does not include a cover on the side of the rotating shaft of the rear differential device, and the carrier has a coupling surface along the rotating shaft center of the rear differential device. -When divided into a case main body and a carrier case cover, there is a difficulty in assembling the shim and the seal member, and there is a problem that an oil complete structure in which lubricating oil is enclosed cannot be obtained.

  More specifically, in the structure shown in FIG. 6 of Patent Document 1, the incorporation is performed as follows.

  A rear differential device can be incorporated into the carrier case main body through a bearing by parallel movement of the shaft center, and then a shim can be driven into the divided portion of the bearing mounting hole portion from the inner diameter side to apply pressure. The carrier case cover can then be coupled to the carrier case body by abutment at the coupling surface.

  However, the seal member is attached when the axle is assembled. Therefore, before assembly on the axle side, only the bearing is arranged between the carrier case and the differential case, which is a rotating body, and lubricating oil is to be sealed between the carrier case and the differential case. However, it is impossible to enclose, and it becomes impossible to achieve an oil-complete structure in which lubricating oil is encapsulated.

JP 2007-71306 A

  The problem to be solved by the present invention is that an oil complete structure cannot be formed between the stationary case and the rotating body.

The present invention has an oil-complete structure between the stationary case and the rotating body, so that the rotating body main body having the bearing mounting shaft portion on the outer periphery of the axial direction and the axial end portion of the rotating body main body A rotating body having a seal support shaft portion that is provided so as to be retrofitted and slide-contacts the seal member with the sliding contact portion, and the bearing mounting shaft portion of the rotating body is interposed in the bearing mounting hole portion of the case. A rotationally supported preload imparting member is assembled between the bearing mounting hole and the bearing in the axial direction, and a preload in the axial direction with respect to the rotational support of the rotating body with respect to the case via the bearing. was granted interposed a seal member between the seal support hole of the said rotary body seal support shaft portion of the case, the case, the binding surface along the plane including the axis of the rotating body comprising a first, second split case portions are abutting bond, Serial preload applying member, said axially located end outer rotary body, the seal support shaft portion, the inner diameter side of the preload applying member is fixed to the hole of the axial end portion of the rotary body The seal support hole portion reaches the outer end in the axial direction of the case, and the sliding contact portion reaches the outer end of the seal support shaft portion .

  According to the present invention, the rotating body and the preload applying member are assembled to one of the first and second divided case parts, and then the other of the first and second divided case parts is attached to the first and second divided case parts. One of the split case portions is abutted and connected by the connecting surface, and the seal support shaft portion is integrated with the rotating body after the pressurizing member is assembled or after the first and second split case portions are connected. Can be combined.

  That is, since the seal support shaft portion is formed so as to reach a range on the inner diameter side of the preload applying member, the inner diameter side of the seal support hole portion can be opened to reliably incorporate the preload applying member.

  After retrofitting the seal support shaft part, the seal member is supported between the seal support shaft part and the seal support hole part, so that the oil that has been sealed in advance in the space formed between the rotating body in the case is completed. It can be a structure.

  Therefore, in this invention, it can be set as an oil completion structure between a case and a rotary body.

  The purpose of having an oil-completed structure between the case and the rotating body is realized by making it possible to retrofit the seal support shaft.

[Overall configuration of four-wheel drive vehicle]
FIG. 1 is a skeleton plan view of a four-wheel drive vehicle.

  As shown in FIG. 1, the transfer 1 that is the driving force transmission device of the present embodiment is disposed on the outer periphery of the intermediate shaft 3 on the front wheel side, and is coupled to the rear wheel output side of the front differential device 5. The distribution case 9 of the transfer 1 as a stationary case is attached to a bell housing 13 on the transmission 11 side.

  A front differential device 5 is supported in the bell housing 13. The front differential device 5 receives drive input from the engine 15 via the transmission 11. This drive input is made to the differential case 19 via the ring gear 17.

  Intermediate shafts 21 and 3 are coupled to the left and right side gears, which are output portions of the front differential device 5, respectively. The intermediate shafts 21 and 3 are coupled to left and right front wheel axles 23 and 25, which are axles, to connect the front differential device 5 and the front wheel axles 23 and 25.

  Therefore, the driving force output of the front differential device 5 is transmitted to the front wheel axles 23 and 25 by the intermediate shafts 21 and 3.

  The transfer 1 distributes the drive input to the front differential device 5 to the rear wheel side. The intermediate shaft 3 is disposed through the distribution case 9 of the transfer 1.

  In the distribution case 9, a connecting hollow shaft 33 as an input shaft (rotating body) is provided. The connecting hollow shaft is loosely fitted on the outer periphery of the intermediate shaft 3. One end portion of the connecting hollow shaft 33 is interlocked and connected to the inner periphery of the boss portion 20 on one end side of the differential case 19 of the front differential device 5 by a spline 85 described later. A ring gear 35 is attached to the connecting hollow shaft 33, and the ring gear 35 meshes with a pinion gear 39 of a rear wheel side output shaft 37 as an output shaft. The ring gear 35 and the pinion gear 39 are formed of bevel gears. The ring gear 35 and the pinion gear 39 are orthogonally meshed to form an orthogonal gear set 41. The connecting hollow shaft 33 has a cylindrical shape in which no opening is formed to communicate the inner and outer peripheral surfaces from both end portions to the intermediate portion.

  A propeller shaft 45 is coupled to the rear wheel side output shaft 37 via a universal joint 43. A drive pinion shaft 49 is coupled to the propeller shaft 45 via an on-demand torque transmission coupling 48 for a universal joint 47, 4WD. The drive pinion gear 51 of the drive pinion shaft 49 meshes with the ring gear 55 of the rear differential device 53.

  The rear differential device 53 is supported by a carrier case 57 as a stationary side case. Left and right rear wheels 63 and 65 are linked to the rear differential device 53 via left and right rear wheel axles 59 and 61.

  Accordingly, when torque is input from the engine 15 to the ring gear 17 of the front differential device 5 via the transmission 11, on the one hand, the left and right front wheels 29, 31 via the intermediate shafts 21, 3 and the front wheel axles 23, 25 are provided. Torque is transmitted to On the other hand, torque is transmitted to the rear wheel output shaft 37 via the differential case 19, the connecting hollow shaft 33, the ring gear 35, and the pinion gear 39.

  From the rear wheel side output shaft 37, a rear differential unit 53 is connected via a universal joint 43, a propeller shaft 45, a universal joint 47, a torque transmission coupling 48, a drive pinion shaft 49, and a drive pinion gear 51. Torque is transmitted to the ring gear 55. Torque is transmitted from the rear differential unit 53 to the left and right rear wheels 63 and 65 via the left and right rear wheel axles 59 and 61.

By this torque transmission, the front and rear wheels 29, 31, 63, and 65 can travel in a four-wheel drive state.
[transfer]
FIG. 2 is a plan sectional view of the transfer.

  As shown in FIG. 2, the transfer 1 is provided on the rear wheel output side of the front differential device 5 as described above, and the drive input to the front differential device 5 (FIG. 1) is applied to the rear wheels 63 and 65 (FIG. 1). ) Side. In this transfer 1, a connecting hollow shaft 33 as an input / output shaft and a rear wheel side output shaft 37 are rotatably supported by a distribution case 9 as a case.

  FIG. 3 is a schematic view in the direction of arrow III in FIG.

  As shown in FIGS. 2 and 3, the distribution case 9 includes a case main body 67 and a second divided case portion which are first divided case portions by a coupling surface 66 along the rotation axis of the ring gear 35. The cover 69 is divided and formed, and the case main body 67 and the cover 69 are joined together by bolts 70 with the joining surfaces 66 aligned. In this embodiment, the upper side of the coupling surface 66 is inclined with respect to the vertical direction so as to incline backward.

  With such a configuration, the case main body 67 and the cover 69 are used as the first and second divided case portions in which the distribution case 9 as a case is abutted and coupled by the coupling surface 66 along the plane including the axis of the connecting hollow shaft 33. It has a configuration with.

  The distribution case 9 has a shape that orthogonally supports the rotating shaft, and has a stepped bearing mounting hole 109 formed in an arc shape in the circumferential direction in the case body 67 and the cover 69 separated by the coupling surface 66, respectively. 111 and bearing mounting holes 110 and 112 are provided. The distribution case 9 is provided with seal support holes 114 and 116 outside the bearing mounting holes 109 and 111 in the axial direction, and a seal support hole 117 is provided outside the bearing mounting holes 112 in the axial direction. .

  The bearing mounting holes 109 and 111 and the seal support holes 114 and 116 have a matching structure by dividing the distribution case 9 at the coupling surface 66. In this mating structure, the distance between the vertical walls facing the axial direction of the divided portions of the bearing mounting holes 109 and 111 on the case body 67 side is the axial direction of the divided portions of the bearing mounting holes 109 and 111 on the cover 69 side. The distance between the vertical walls facing each other is the same.

  In the distribution case 9, an accommodation space 71 such as an orthogonal gear set 41 is formed, and a predetermined amount of oil is sealed therein. The case main body 67 is provided with an oil injection opening 73 and a filler plug 74.

  In the distribution case 9, the case body 67 is fastened and fixed to the wall surface of the bell housing 13 on the transmission side by bolts 76. The cover 69 attached to the case main body 67 has a slight gap with respect to the wall surface of the bell housing 13, so that the distribution case 9 can be securely attached to the bell housing 13.

  The connecting hollow shaft 33 is rotatably supported by the distribution case 9 by tapered roller bearings 75 and 77 as bearings disposed on both sides.

  The connecting hollow shaft 33 includes a connecting hollow shaft main body 78 as a rotating body main body and a seal support shaft portion 79.

  The connecting hollow shaft main body 78 is provided with bearing mounting shaft portions 80 and 82 at the outer periphery and intermediate portion of one end portion in the axial direction, and the spline portion 85 and the sliding contact for coupling are provided at the outer periphery of the other end portion in the axial direction. A portion 86 is provided. The connecting hollow shaft body 78 is provided with a flange portion 87 adjacent to the bearing mounting shaft portion 82 side, and a press-fitting hole portion 81 is provided on the inner periphery of one end of the connecting hollow shaft body 78 in the axial direction. ing. The ring gear 35 is fastened and fixed to the flange portion 87 by bolts 89.

  The seal support shaft portion 79 is provided so as to be retrofitted to the connecting hollow shaft main body 78, and a press-fit shaft portion 84 and a sliding contact portion 83 are formed in a stepped shape. The press-fit shaft portion 84 is press-fitted into the press-fit hole portion 81 of the connection hollow shaft main body 78 to ensure the concentricity of the connection hollow shaft main body 78 and the seal support shaft portion 79, and the seal member 93 contacts the sliding contact portion 83. The sliding contact is possible without eccentricity. By setting the press-fitting position of the press-fitting hole 81 and the press-fitting shaft 84 to the inner peripheral side of the connecting hollow shaft 33, the influence on the taper roller bearing 77 can be eliminated. The seal support shaft portion 79 may not be press-fitted. For example, the seal support shaft portion 79 may be splined or screwed. However, in the connection portion between the connecting hollow shaft main body 78 and the seal support shaft portion 79, the distribution case 9 is used. In order to prevent leakage of a predetermined amount of oil in the space formed between the connecting hollow shaft 33 and the connecting hollow shaft 33, press-fitting or shrink fitting without gaps, or spline, screwing, gap fitting, It is preferable to interpose a gap sealant (liquid gasket or rubber-made seal ring).

  In this state, the end surface of the sliding contact portion 83 of the seal support shaft portion 79 is in contact with the end surface 99 of the connecting hollow shaft main body 78. The end face 99 is substantially flush with the end face of the inner race 113 of the tapered roller bearing 77 in the axial direction. Since the end face of the outer race 115 of the tapered roller bearing 77 protrudes in the axial direction from the end face of the inner race 113, the seal support shaft portion 79 is a range on the inner diameter side of the shim 103 as a preload applying member to be described later. Has been formed.

  In the connection hollow shaft 33 having such a structure, the bearing mounting shaft portions 80 and 82 are rotatably supported by the bearing mounting holes 109 and 111 of the distribution case 9 via the tapered roller bearings 75 and 77. . A shim 103 as a preloading member is driven between the outer race 115 of the tapered roller bearings 75 and 77 and the bearing mounting holes 109 and 111 in the axial direction, with respect to the tapered roller bearings 75 and 77. Axial preload is applied. The shim 103 on the taper roller bearing 77 side has two shims formed thicker than the shim 103 on the taper roller bearing 75 side.

  Seal members 91, 93 are interposed between the sliding contact portions 86, 83 and the seal support holes 114, 116 of the distribution case 9 outside the taper roller bearings 75, 77 in the axial direction. The oil in 9 is prevented from leaking outside.

  Further, a seal member 97 that seals with the intermediate shaft 3 side is attached to the inner peripheral surface of one seal support shaft portion 79, and another oil sealed on the bell housing 13 side is attached to the seal support shaft. It is prevented from leaking outside through the inner peripheral surface of the portion 79 and the intermediate shaft 3.

  The rear wheel side output shaft 37 is rotatably supported on the case body 97 of the distribution case 9 by tapered roller bearings 118 and 120 attached to the bearing attachment holes 110 and 112.

A coupling flange member 123 is fastened to the end of the rear wheel output shaft 37 by a nut 125. A seal member 127 is provided between the base end side of the coupling flange member 123 and the seal support hole 117 of the distribution case 9 to prevent oil in the distribution case 9 from leaking to the outside. Accordingly, the inside of the distribution case 9 can be partitioned by the seal members 91, 93, and 127 to form an oil-complete structure, and the lubricating oil is sealed in the accommodation space 71.
[Assembly of transfer]
Tapered roller bearings 75 and 77 for attaching the connecting hollow shaft body 78 between the bearing mounting hole portions 109 and 111 in the case body 67 and the bearing mounting shaft portions 80 and 82 before assembling the seal support shaft portion 79. Assemble to the case body 67 side.

  When assembling, the cover 69 of the distribution case 9 is first removed and placed.

  The connecting hollow shaft 33 and the rear wheel side output shaft 37 are assembled to the case main body 67 of the distribution case 9 with the cover 69 removed via the tapered roller bearings 75, 77, 118, 120.

  At this time, the shim 103 on the taper roller bearing 75 side is assembled in advance in a divided portion on the case body 67 side of the bearing mounting hole 109.

  The shim 103 on the other side of the tapered roller bearing 77 is connected to the bearing mounting hole 111 after the tapered roller bearings 75 and 77 are mounted on the divided portions of the bearing mounting holes 109 and 111 on the case body 67 side. The pre-load is applied to the tapered roller bearings 75 and 77 by driving inwardly from the inner diameter side of the divided portion toward the radially outer side.

  Thereafter, the cover 69 is abutted against the case main body 67 by the coupling surface 66 and is fastened and coupled by the bolt 70. At this time, due to the setting of the distance between the vertical walls facing the axial direction of the divided portions of the bearing mounting holes 109 and 111 in the cover 69, the divided portions of the bearing mounting holes 109 and 111 in the cover 69 become the case body 67. It can be combined with the shim 103 incorporated on the side without difficulty.

  Thereafter, the press-fit shaft portion 84 of the seal support shaft portion 79 is press-fitted into the press-fit hole portion 81 of the connection hollow shaft main body 78, and the seal support shaft portion 79 is integrally connected to the connection intermediate shaft main body 78 by retrofitting. However, the seal shaft support 79 can be retrofitted after the shim 103 on the other side of the tapered roller bearing 77 is driven and before the cover 69 is coupled to the case body 67.

  Thereafter, seal members 91 and 93 are interposed between the seal support hole portions 114 and 116 and the sliding contact portions 86 and 83.

  When driving the shim 103 on the taper roller bearing 77 side, the seal support shaft 79 to be retrofitted is formed to reach the inner diameter side range of the shim 103, so that the inner diameter side of the shim 103 is opened. Can do. Therefore, the shim 103 can be driven reliably without using a large assembling jig or the like.

  The shim 103 on the tapered roller bearing 77 side is driven by inserting the first shim 103 between the outer race 115 of the tapered roller bearing 77 and the bearing mounting hole 111 of the distribution case 9 in the axial direction. Thereafter, the second shim 103 is driven between the first shim 103 and the outer race 115 of the tapered roller bearing 77.

For this reason, even when the distribution case 9 is made of a material that is easily damaged, such as aluminum, it is possible to suppress the external force caused by driving directly from being input to the distribution case 9 and to suppress damage during assembly. . When assembling the shim, the shims 103, 103, 103 on both sides are set with the tapered roller bearings 75, 77 and the connecting hollow shaft body 78 as a set, and both ends are clamped and pressed to give preload to the set. In this state, the case body 67 may be disposed between the bearing mounting holes 109 and 111.
[Effect of Example]
In the embodiment of the present invention, the connecting hollow shaft 33 can be rotatably supported on the distribution case 9 in advance via the tapered roller bearings 75 and 77. And since the seal support shaft portion 79 for slidingly contacting the seal member 93 is formed so as to be retrofitted and reaches the inner diameter side range of the shims 103, 103, before the seal support shaft portion 79 is retrofitted, It is possible to open the inner diameter side of the shims 103, 103 and perform driving from the inner diameter side with certainty.

  For this reason, after the shims 103 and 103 are driven, the cover 69 and the case main body 67 can be easily coupled, so that a decrease in assembling workability can be suppressed and the assembling equipment can be simplified.

  After the seal support shaft portion 79 is retrofitted, a seal member 93 is interposed between the seal support shaft portion 79 and the distribution case 9, so that the oil complete structure is established between the connecting hollow shaft 33 and the distribution case 9. be able to.

  Therefore, in the present embodiment, the oil complete structure can be achieved, but the deterioration of the assembly workability can be suppressed, the transfer 1 can be assembled and transported after the oil is filled, and the bell housing 13 Can be easily connected.

  In this embodiment, since the retrofit of the seal support shaft portion 79 is performed by press-fitting, the assembling workability can be improved.

  Since the press-fitting is performed by inserting the press-fitting portion 107 formed in the seal support shaft portion 79 into the circular press-fitted portion 81 formed on the inner peripheral side of the hollow connecting shaft 33, the assembling workability is improved. In addition to the improvement, the influence of the press-fitting on the tapered roller bearing 77 can be eliminated.

  Further, in this embodiment, since a plurality of shims 103 are driven in the axial direction between the tapered roller bearing 77 and the distribution case 9, one shim 103 is inserted into the tapered roller bearing 77 and the distribution case. 9, the other shim 103 can be driven between the inserted shim 103 and the tapered roller bearing 77 from the inner peripheral side. For this reason, even when the distribution case 9 is made of a material that is easily damaged, such as aluminum, the external force due to the driving of the shim 103 is suppressed from being directly input to the distribution case 9 side, thereby suppressing damage during assembly. be able to. As a result, the assembly workability can be improved.

  FIG. 4 is a plan sectional view of the final drive, and FIG. 5 is a schematic side view of the carrier case. Constituent parts corresponding to those in the above-described embodiment are denoted by the same reference numerals or A, and detailed description thereof is omitted.

  The driving force transmission device of this embodiment is applied as a rear wheel side final drive 1A.

  That is, in this embodiment, the carrier case 57A as the stationary case, the drive pinion shaft 49A as the input shaft, and the differential case 129 of the rear differential device 53A as the output shaft as the rotating body are freely rotatable. It is supported by.

  As shown in FIG. 5, the carrier case 57A has a case main body 131 as a first divided case portion and a carrier cover as a second case portion by a coupling surface 130 along the rotation axis of the ring gear 55A. The carrier cover 137 is joined to the case main body 131 with bolts 134 so as to be divided into 137, and with the dividing surface 130 aligned.

  In this embodiment, the upper side of the coupling surface 130 is inclined with respect to the vertical direction so as to incline backward.

  As shown in FIGS. 4 and 5, the drive pinion shaft 49A is supported on the case main body 131 of the carrier case 57A by tapered roller bearings 118A and 120A as bearings. The drive pinion shaft 49A has a coupling member 133 fastened to one end by a nut 135 and a drive pinion gear 51A provided to the other end. A sealing member 127A is provided between the coupling member 133 and the carrier case 57A.

  The differential case 129 is supported between the case main body 131 of the carrier case 57A and the carrier cover 137 by tapered roller bearings 75A and 77A as bearings. One shim 103A is driven between the tapered roller bearings 75A and 77A and the carrier case 57A. However, the number of driven shims 103A is arbitrary, and a plurality of shims 103A can be used as in the above embodiment.

  A ring gear 55A that is orthogonally engaged with the drive pinion gear 51A is attached to the flange portion 139 of the differential case 129 by a bolt 141.

  In the differential case 129, pinion gears 145 and 145 are rotatably supported via a pinion shaft 143. The pinion gears 145 and 145 are engaged with and coupled to the pair of side gears 147 and 149 and allow relative rotation between the side gears 147 and 149. Rear wheel axles 59A and 61A are splined to the side gears 147 and 149, respectively.

  Accordingly, the driving force input from the drive pinion shaft 49A to the differential case 129 of the rear differential device 53A via the drive pinion gear 51A and the ring gear 55A is transmitted via the rear wheel axles 59A and 61A. Transmission to the left and right rear wheels 63 and 65 is possible.

  In this embodiment, seal support shafts 95A and 95A that can be retrofitted are provided at both ends of the differential case 129. The seal support shaft portions 95A and 95A are coupled to the differential case 129 by press-fitting the press-fit shaft portion 84A into the press-fit hole portion 81A.

  Seal members 95A and 95A are interposed between the seal support shafts 93A and 93A and the carrier case 57A. The seal support shafts 95A and 95A may have a configuration in which only one of them is provided as in the above embodiment.

  In this embodiment, in addition to the same effects as the above embodiment, the seal support shaft portions 95A and 95A are provided at both ends of the differential case 129 so as to be retrofitted. Can be further improved, and the degree of assembly freedom can be improved. Also in the second embodiment, oil leaks from between the carrier case 57A and the differential case 129 by the seal member 93A disposed between the carrier case 57A and the seal support shafts 95A and 95A. It is prevented. As in the conventional structure, an axle is inserted and a seal is disposed between the stationary case and the axle serving as a rotating body to prevent oil sealed between the case and the rotating body from leaking outside the case. Compared to the structure, a seal can be directly arranged between the case and the rotating body to prevent oil leakage. In other words, since it is not a necessary condition to provide a seal member between the case and the axle, the seal member in which part the seal member that prevents the oil circulated inside the differential case from leaking to the outside is provided. The degree of freedom of arrangement can be increased.

(Example 1) which is a skeleton top view of a four-wheel drive vehicle. (Example 1) which is a plane sectional view of a transfer. (Example 1) which is the schematic of the III arrow direction of FIG. (Example 2) which is a plane sectional view of a final drive. (Example 2) which is a schematic side view of a carrier case.

Explanation of symbols

1,1A Transfer 5 Front differential device 9 Distribution case (case)
33 Connecting hollow shaft (rotary body)
37 Rear wheel output shaft 49, 49A Drive pinion shaft 53, 53A Rear differential device 57, 57A Carrier case (case)
67 Case body (first split case part)
69 Cover (second split case part)
75, 77, 75A, 77A Tapered roller bearing (bearing)
78 Connection hollow shaft body (Rotating body)
79, 95A Seal support shaft portion 80, 82 Bearing mounting shaft portion 91, 93, 93A Seal member 103, 103A Shim (preload application member)
110, 112 Bearing mounting hole 129 Differential case (Rotating body)

Claims (12)

A rotating body main body having a bearing mounting shaft portion on the outer periphery of the axial end portion, and a seal support shaft portion that can be retrofitted to the axial end portion of the rotating body main body and slides the seal member on the sliding contact portion . A rotating body having
The bearing mounting shaft portion of the rotating body is rotatably supported through a bearing in the bearing mounting hole portion of the case,
Between the axial direction of the bearing mounting hole portion and the bearing, a circular preload application member is assembled, and an axial preload is applied to the rotation support for the case via the bearing of the rotating body,
A sealing member interposed between the seal support hole of the casing and seal support shaft portion of the rotating body,
The case includes first and second split case portions that are abutted and coupled by a coupling surface along a plane including the axis of the rotating body,
The preload applying member is located outside the axial end of the rotating body;
The seal support shaft portion is fixed to the hole in the axial end portion of the rotating body main body and reaches the range on the inner diameter side of the preload application member ;
The seal support hole portion reaches the outer end in the axial direction of the case, and the sliding contact portion reaches the outer end of the seal support shaft portion.
An assembly structure of a rotating body characterized by that. A rotating body main body having a bearing mounting shaft portion on the outer periphery of the axial end portion, and a seal support shaft portion that can be retrofitted to the axial end portion of the rotating body main body and slides the seal member on the sliding contact portion . A rotating body having
The bearing mounting shaft portion of the rotating body is rotatably supported through a bearing in the bearing mounting hole portion of the case,
Between the axial direction of the bearing mounting hole portion and the bearing, a circular preload application member is assembled, and an axial preload is applied to the rotation support for the case via the bearing of the rotating body,
A sealing member interposed between the seal support hole of the casing and seal support shaft portion of the rotating body,
The case includes first and second split case portions that are abutted and coupled by a coupling surface along a plane including the axis of the rotating body,
The preload applying member is located outside the axial end of the rotating body;
The seal support shaft portion is fixed to the hole in the axial end portion of the rotating body main body and reaches the range on the inner diameter side of the preload application member ;
The seal support hole portion reaches an outer end in the axial direction of the case, and the sliding contact portion is an assembling method of a rotating body assembly structure reaching the outer end of the seal support shaft portion ,
Before the assembly of the seal support shaft portion, the rotating body main body is interposed between the bearing mounting shaft portion and the bearing mounting shaft portion between the bearing mounting hole portions of the first and second split case portions. 1, assembled to one of the second split case parts,
Thereafter, the preload is applied from the inner diameter side to the radial direction outside the axial end portion of the rotating body main body with respect to the divided portion of one bearing mounting hole portion of the first and second divided case portions assembled with the rotating body main body. I will drive the member,
Thereafter, the other of the first and second divided case parts is abutted and joined to one of the first and second divided case parts by the coupling surface,
After the preload application member is driven or after the first and second divided case portions are joined, the seal support shaft portion is integrally joined to the rotating body body by the retrofit.
A method of assembling the rotating body. The assembly structure of the rotating body according to claim 1 ,
The case is configured to rotatably support an input / output shaft arranged to intersect and transmit driving force through a bearing,
The first and second divided case portions of the case can be abutted and coupled by a coupling surface along a plane including the axis of the input / output shaft as the rotating body.
An assembly structure of a rotating body characterized by that. The assembly structure of the rotating body according to claim 1 or 3 ,
The assembly structure of the rotating body, wherein the seal support shaft portion is provided at both ends of the rotating body . The assembly structure of the rotating body according to any one of claims 1, 3, and 4 ,
The seal support shaft portion is retrofitted by press-fitting into the rotating body main body,
An assembly structure of a rotating body characterized by that. The assembly structure of the rotating body according to claim 5,
The rotary body has a press-fitting hole portion for performing the press-fitting and the seal support shaft portion has a press-fit shaft portion for performing the press-fitting,
An assembly structure of a rotating body characterized by that. The assembly structure of the rotating body according to any one of claims 1 and 3-6 ,
The preload applying member is assembled structure of the rotary body, characterized in that provided overlapping a plurality of sheets between said axial direction. Driving force transmitting device provided with an assembly structure of a rotary body according to any one of claims 1,3～7. The driving force transmission device according to claim 8,
The rotating body is a rotating shaft coupled to the rear wheel output side of the front differential device.
A driving force transmission device characterized by that. The driving force transmission device according to claim 8,
The rotating body is a differential case of a rear differential device.
A driving force transmission device characterized by that. It is used for the assembly structure of the rotating body according to any one of claims 1, 3 to 7 ,
A rotating body having a rotating body main body having a bearing mounting shaft portion on an outer periphery of an end portion in the axial direction, and a seal support shaft portion slidably contacted with a sealing member provided at an axial end portion of the rotating body main body. It is a driving force transmission device according to claim 8-10,
The rotating body includes a rotating body main body having a bearing mounting shaft portion on an outer periphery of an end portion in the axial direction, and a seal support shaft portion that is provided on the axial end portion of the rotating body main body so as to be retrofitted so as to slide the seal member. Having
A driving force transmission device characterized by that.

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