JP2009274491A - Mount structure of differential or transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a differential mount structure capable of easily adjusting the fitting position and the fitting angle of a propeller shaft and adjusting them to the desired values, respectively. <P>SOLUTION: The mount structure comprises rear fixing parts 19, 19 for fixing a differential 5 to a sub frame 17, and a front fixing part 20 having a fixed position adjusting mechanism 30. The fixed position adjusting mechanism 30 comprises a bolt 26 which is positionally fixed with respect to the sub frame 17, and a vibration-isolating member 21 having a fitting hole 24 which is positionally fixed with respect to the differential 5, and is capable of adjusting the fixed position of the bolt 26 along the fitting hole (long hole) 24 of the arc shape with the rear fixing part 19 as its center. Thus, the fitting angle of a propeller shaft 3 connected to the differential 5 and the fitting angle (the joint angle) formed by the propeller shaft 3 at a center joint part 2 can be adjusted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mount structure for mounting a differential or a transmission on a vehicle, and more particularly to a mount structure capable of adjusting a mounting angle of a split type propeller shaft connected at a center joint portion.

  An FR (front engine rear drive) type or four-wheel drive type vehicle includes a propeller shaft that connects a transmission installed adjacent to the engine and a rear wheel differential (differential gear). As such a propeller shaft, a split-type propeller shaft having two front-side and rear-side propeller shafts connected at a predetermined attachment angle (joint angle) at the center joint portion is employed.

  In the split type propeller shaft, the front side propeller shaft is connected to the transmission via the front joint, and the rear side propeller shaft is connected to the differential via the rear joint. Such a split type propeller shaft has higher rigidity than an integral type propeller shaft, and thus can be rotated at a high speed. Moreover, since it is excellent in quietness, it is possible to improve the comfort in the passenger compartment.

  However, if the joint angle formed by the front and rear propeller shafts is out of the proper range at the center joint portion, there is a problem that vibration and noise are likely to occur when the propeller shaft rotates. Therefore, when manufacturing the vehicle, the propeller shaft is mounted and fixed after adjusting the joint angle so that the joint angle formed by the front and rear propeller shafts is within the appropriate range. It has been broken.

As described in Patent Documents 1 and 2, the conventional adjustment operation of the joint angle of the propeller shaft is performed by adjusting the fixing position of a fastener such as a bolt fixing the propeller shaft at the center joint portion or a position near the center joint portion. It was done by adjusting. However, in the adjustment methods described in Patent Documents 1 and 2, there are problems that the fixing positions of a plurality of fasteners must be adjusted, and adjustment work takes time and effort. Also, if the joint angle of the propeller shaft is adjusted at or near the center joint, the adjustment angle (adjustment amount) of the joint angle cannot be increased so that it is difficult to adjust the joint angle to a desired angle. There was also.
JP-A-4-254217 JP-A-6-78048

  The present invention has been made in view of the above points, and the purpose of the present invention is to provide a differential or a differential that can easily adjust the mounting position and mounting angle of the propeller shaft and can be adjusted to a desired mounting position and mounting angle. It is to provide a transmission mounting structure.

  In order to solve the above problems, the differential or transmission mount structure according to the present invention includes a plurality of fixing portions (19, 19, 20) for fixing the differential (5) or the transmission (50) to the vehicle body (17) side, At least one fixing part (20) of the plurality of fixing parts (19, 19, 20) has a fixing position adjusting mechanism (30) capable of adjusting a fixing position, and the fixing position adjusting mechanism (30 ), The propeller shaft (3) connected to the center joint (2) and the differential (5), or the propeller shaft connected to the center joint (2) and the transmission (50) ( 4) Mounting position and mounting angle formed by the propeller shaft (3, 4) at the center joint (2) Wherein the joint angle) is adjustable. In addition, the code | symbol in parenthesis here has shown the code | symbol of the corresponding component of embodiment mentioned later as an example of this invention.

  In the mount structure according to the present invention, the fixed position adjusting mechanism capable of adjusting the fixing position is disposed in at least one fixing portion that fixes the differential or the transmission to the vehicle body side. This makes it easy to adjust the mounting position of the propeller shaft and the mounting angle at the center joint by adjusting the fixed position with the fixed position adjustment mechanism when assembling the differential or transmission to the vehicle body, and the desired mounting angle. It becomes possible to adjust to.

  The fixed position adjusting mechanism (30) includes a shaft member (26) whose position is fixed with respect to either the differential (5) or the transmission (50) side or the vehicle body (17) side, It has a mounting hole (24) for inserting the shaft member (26) so that the relative position can be adjusted, and its position is fixed to either the differential (5) or the transmission (50) side or the vehicle body (17) side. And a mounting member (21). Thus, if the fixed position adjusting mechanism is configured by the shaft member and the mounting member having the mounting hole for inserting the shaft member so that the relative position can be adjusted, the number of parts of the fixed position adjusting mechanism can be reduced, The configuration can be simplified. In addition, adjustment of the differential or transmission mounting angle and adjustment of the propeller shaft mounting angle can be easily performed.

  In such a fixed position adjusting mechanism (30), the mounting hole (24) is preferably an oversized hole having an inner dimension larger than the outer dimension of the shaft member. Further, a linear slot (24a) extending in the tangential direction (C) with respect to the arc direction (B) centered on the other fixed portion (19), or an arc direction centered on the other fixed portion (19) An arc-shaped elongated hole (24b) extending in (B) may be used. In this way, by making the mounting hole an oversized hole, a straight elongated hole, or an arc-shaped elongated hole, strain (for example, the elasticity provided in the vibration isolating member) that occurs in other fixed portions when the fixed position is adjusted. Body deformation). Therefore, vibration and noise generated in the differential or transmission mounted on the vehicle body can be suppressed by the mount structure of the present invention, and durability can be improved.

  The fixed position adjusting mechanism (30) includes a cam (35) having an insertion hole (35a) through which the shaft member (26) is inserted at an eccentric position, and a cam groove ( 36) may be provided. If such a cam mechanism is provided in the fixed position adjusting mechanism, the position of the shaft member relative to the mounting hole can be adjusted by rotating the cam eccentrically in the cam groove, so that the fixed position can be easily adjusted, And it becomes possible to perform with high accuracy. Therefore, the installation position and the installation angle of the propeller shaft can be quickly adjusted, and the adjustment can be made to a desired installation angle.

  In the mount structure of the present invention, among the plurality of fixing portions (19, 19, 20) for fixing the differential or the transmission to the vehicle body side, the fixing portion (20) including the fixing position adjusting mechanism (30) It may be arranged at a position closer to the center joint part (2) than the fixed part (19, 19) (position closer to the center in the longitudinal direction of the vehicle body). According to this, since the fixed portion on the side far from the center joint portion is used as a fulcrum, the fixing position of the fixed portion on the near side is swung and adjusted, so the adjustment work of the mounting position and the mounting angle of the propeller shaft is not necessary. It becomes easy to do. Further, since the adjustment range (adjustment amount) of the propeller shaft attachment position and the attachment angle with respect to the adjustment amount of the fixed position at the fixing portion can be increased, it becomes easy to adjust the attachment angle of the propeller shaft to a desired angle.

  Alternatively, of the plurality of fixing portions (19, 19, 20) for fixing the differential or the transmission to the vehicle body side, the fixing portion (20) including the fixing position adjusting mechanism (30) is the differential (5) in the longitudinal direction of the vehicle. It can also be arranged at the rear end of the transmission or in the vicinity thereof, or at the front end of the transmission (50) or in the vicinity thereof. By arranging each fixing portion in such a manner, the workability with respect to the fixed position adjusting mechanism is improved, and the adjustment of the fixed position of the differential and the transmission and the adjustment operation of the mounting position and mounting angle of the propeller shaft are facilitated.

  According to the differential or transmission mount structure of the present invention, it is possible to easily adjust the mounting position of the propeller shaft and the mounting angle at the center joint portion, and to adjust to the desired mounting position and mounting angle.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the term “front” or “rear”, “front” or “rear” refers to the front-rear direction of the vehicle, which will be described later, that is, the front side or the rear side in the axial direction of the propeller shaft. FIG. 1A is a schematic diagram showing an overall configuration of a driving force transmission mechanism having a differential and a transmission having a mount structure according to an embodiment of the present invention. The driving force transmission mechanism 1 shown in FIG. 1 includes a split type propeller shaft composed of a rear side propeller shaft 3 and a front side propeller shaft 4 which are coupled at a predetermined mounting angle at a center joint portion 2, and a rear side propeller shaft. A differential (differential gear) 5 connected to the rear end of the propeller shaft 3 and a transmission 50 connected to the front end of the front propeller shaft 4 are provided. The transmission 50 is fixed to the rear end of the engine 55. FIG. 1B is a diagram showing adjustment of the mounting position and mounting angle of the propeller shaft 3 by the mounting structure according to the first embodiment to be described later, and FIG. 1C is the mount according to the fourth embodiment. It is a figure which shows adjustment of the attachment position and attachment angle of the propeller shaft 3 by a structure.

[First Embodiment]
FIG. 2 is a perspective view showing the mounting structure of the differential 5 according to the first embodiment of the present invention. The differential 5 includes an input shaft 11 connected to the rear end of the propeller shaft 3 on the rear side (see FIG. 1A), output shafts 12 and 13 connected to left and right drive shafts (not shown), And a gear mechanism (not shown) accommodated in the case 15. In the differential 5, the input rotation of the engine 55 (see FIG. 1A) transmitted by the propeller shaft 3 is input to the gear mechanism via the input shaft 11, and the left and right output shafts 12 and 13 are input by the gear mechanism. It is distributed and transmitted to the wheels via the left and right drive shafts. The case 15 of the differential 5 is fixed to a subframe (vehicle body side member) 17 by the mounting structure according to the present invention, and the subframe 17 is supported by the vehicle body via bushes 18 mounted at four corners. .

  The mounting structure of the differential 5 includes three fixing portions 19, 19, and 20 that fix the case 15 to the subframe 17. Among them, the two fixing portions 19 and 19 are arranged behind the case 15, and the one fixing portion 20 is arranged in front of the case 15. The rear fixing portions 19, 19 are arranged side by side at a predetermined interval on the rear end surface of the case 15, and the fixing portions 19, 19 are fixed to mounting holes 17 a, 17 a formed in the subframe 17. Vibration members 16 and 16 are provided. The front fixing portion 20 is disposed on the side surface of the case 15 in front of the output shafts 12 and 13, and the fixing portion 20 is fixed to a bracket 31 formed integrally with the subframe 17. A vibration member 21 is provided.

  The anti-vibration members 16 and 16 installed in the rear fixing parts 19 and 19 have a double-structured cylindrical body having an inner cylinder and an outer cylinder arranged concentrically, although detailed illustration is omitted. In this structure, an elastic material such as rubber is interposed between the inner cylinder and the outer cylinder. The vibration isolation members 16, 16 are fixedly attached to bolts 15 a, 15 a whose outer cylinder protrudes from the rear end portion of the case 15 while the outer cylinder is press-fitted and held in the mounting holes 17 a, 17 a of the subframe 17. . The anti-vibration members 16 and 16 are arranged such that the axis of the inner and outer cylinders is oriented along the longitudinal direction of the vehicle body.

  FIG. 3 is an exploded perspective view showing components of the front fixing portion 20. The fixing portion 20 includes a vibration isolating member 21 fixed to the case 15, a bracket 31 integrally formed with the subframe 17, a bolt (shaft member) 26 and a nut for attaching and fixing the vibration isolating member 21 to the bracket 31. 27. The vibration isolating member 21 has a double-structured cylindrical body having an inner cylinder 22a and an outer cylinder 22b arranged concentrically like the vibration isolating member 16, and between the inner cylinder 22a and the outer cylinder 22b. In this structure, an elastic material 23 such as rubber is interposed. The anti-vibration member 21 is disposed in a direction along the horizontal direction (left-right direction) in which the axis of the inner and outer cylinders 22a, 22b is orthogonal to the front-rear direction of the vehicle body. An attachment hole 24 for inserting the bolt 26 in the axial direction is formed in the end surface of the inner cylinder 22a of the vibration isolation member 21. The mounting hole 24 is formed as a circular hole having an inner diameter substantially the same as the outer diameter of the bolt 26. On the other hand, the bracket 31 has a shape having side walls 31a and 31a facing both ends of the vibration isolation member 21, and mounting holes 32 and 32 for inserting the bolts 26 are formed in the side walls 31a and 31a. In the present embodiment, the mounting holes 32 are formed as long holes (oversized holes) having an inner dimension larger than the outer dimension of the bolt 26. In FIG. 3, the bracket 31 is illustrated in a state where only the portions of the side walls 31 a and 31 a having the mounting holes 32 and 32 are separated from each other. The bolt 26 and the bracket 31 (mounting member) having the mounting hole 32 constitute a fixed position adjusting mechanism 30 for adjusting the fixed position of the fixed portion 20.

  FIG. 4 is a view showing a specific example of the shape of the mounting hole 32. The mounting hole 32 is tangent to the arc direction B with the rear fixed portion 19 as the center A as seen from the lateral direction of the differential 5 (horizontal direction orthogonal to the front-rear direction), as shown in FIG. A straight long hole 32a along the direction C can be formed. Further, as shown in FIG. 5B, an arc-shaped elongated hole 32b along the arc direction B with the rear fixed portion 19 as the center A can be used. Here, since the fixing portion 20 is disposed at a higher position in the vertical direction than the fixing portion 19, the long holes 32a and 32b along the arc direction B or the tangential direction C have their longitudinal directions with respect to the vertical direction. Will be inclined. In addition to the above, the mounting hole 32 may be a long hole having a shape along an arcuate line (for example, an elliptical arc) other than an arc centered on the rear fixed portion 19. Thus, by making the mounting hole 32 a long hole along the arc direction with the rear fixed portion 19 as the center, the bolt 26 can be inserted into the mounting hole 32 so that the relative position can be adjusted along the arc direction. Can do. The mounting hole 32 may have a shape other than the long hole as long as it has a larger inner dimension than the outer dimension of the bolt 26 (oversized hole). It may be a hole having a shape in which the direction in which it heads (normal direction D with respect to the arc direction B) is expanded, or a hole having a shape in which the entire circumference is expanded relative to the outer periphery of the bolt 26.

  As shown in FIG. 3, the fixed position adjusting mechanism 30 includes a cam mechanism 37 including a disc-like cam 35 having an insertion hole 35 a through which the bolt 26 is inserted, and a cam groove 36 formed in the bracket 31. ing. The insertion hole 35 a is disposed at a position that is eccentric with respect to the center of the disc-shaped cam 35. The cam groove 36 is disposed around the mounting hole 32 on the outer side surface of the bracket 31 and is formed as a linear groove portion having a width dimension substantially equal to the diameter of the cam 35. The cam groove 36 extends in a direction intersecting (orthogonal) with the longitudinal direction of the mounting hole 32. Therefore, the position of the bolt 26 with respect to the mounting hole 32 can be adjusted by rotating the cam 35 within the cam groove 36.

  FIGS. 5A and 5B are diagrams for explaining a procedure for adjusting the fixed position by the fixed position adjusting mechanism 30 having the above-described configuration. FIGS. 5A, 5C, and 5E are views showing the state of the fixing unit 20. FIG. ), (D), and (f) are schematic side views showing states of the differential 5 corresponding to (a), (c), and (e), respectively. The procedure for adjusting the fixing position of the fixing unit 20 will be described with reference to FIG. This adjustment operation is performed with the rear fixing portion 19 fixed to the subframe 17. First, as shown in FIG. 5A, when the mounting hole 32 is positioned at the lower limit with respect to the bolt 26, the vibration isolating member 21 is in the raised position with respect to the bracket 31, so the differential 5 is As shown in FIG. 2B, the front of the case 15 is raised. Therefore, the propeller shaft 3 has its front end (end connected to the center joint portion 2) raised to increase the inclination angle in the axial direction (front-rear direction), and the propeller shaft 3 mounting angle at the center joint portion 2 is increased. Has an angle corresponding to it.

  When the cam 35 is rotated in the cam groove 36 in this state, the position of the mounting hole 32 with respect to the bolt 26 is moved upward by the eccentric rotation of the cam 35 around the bolt 26. When the position of the bolt 26 is at the center of the mounting hole 32 (the center in the longitudinal direction) as shown in FIG. 10C, the front of the case 15 is in the vertical direction as shown in FIG. In the middle position. When the cam 35 is further rotated in this state, the position of the mounting hole 32 with respect to the bolt 26 moves further upward. Then, as shown in FIG. 5E, when the mounting hole 32 is located at the upper limit with respect to the bolt 26, the vibration isolating member 21 is in the lowered position with respect to the bracket 31. As shown, the front of the case 15 is lowered. In this state, the inclination angle in the axial direction of the propeller shaft 3 is small, and the mounting angle of the propeller shaft 3 at the center joint portion 2 is an angle corresponding thereto.

  By adjusting the fixed position, the mounting angle of the differential 5 can be adjusted. Therefore, as shown in FIG. 1B, the mounting position (mounting height) of the propeller shaft 3 connected to the differential 5 and the propeller shaft. The attachment angle (joint angle) 3 forms at the center joint portion 2 can be adjusted. When the mounting angle of the differential 5 is determined, the vibration isolation member 21 is fixed to the bracket 31 by tightening the bolt 26 and the nut 27 at that position.

  As described above, the mounting structure of the differential 5 according to the present embodiment includes the fixing portions 19, 19, and 20 at a total of three locations including the two rear portions and the one front portion of the case 15. 20, a fixed position adjusting mechanism 30 capable of adjusting a fixed position along an arc direction centered on the rear fixed parts 19, 19 is disposed in the front fixed part 20. Therefore, the attachment angle of the differential 5 can be adjusted by adjusting the fixed position by the fixed position adjusting mechanism 30. Further, the mounting position of the propeller shaft 3 connected to the differential 5 and the mounting angle formed by the propeller shaft 3 at the center joint portion 2 can be adjusted. Accordingly, when the work for assembling the differential 5 to the vehicle body is performed, the attachment position of the propeller shaft 3 and the attachment angle at the center joint portion 2 can be easily adjusted.

  In the present embodiment, the fixed position adjusting mechanism 30 is configured by a bolt (shaft member) 26 and a bracket 31 (attachment member) having a mounting hole 32 into which the bolt 26 is inserted so that the relative position can be adjusted. Therefore, the number of parts of the fixed position adjusting mechanism 30 can be reduced, and the structure can be simplified. Further, according to this configuration, the fixing position can be adjusted simply by adjusting the position of the bolt 26 with respect to the mounting hole 32. Therefore, the adjustment of the mounting angle of the differential 5 and the adjustment of the mounting position and mounting angle of the propeller shaft 3 can be performed. It becomes easy to do.

  Further, in the present embodiment, the shape of the mounting hole 32 is a straight elongated hole 32a extending in a tangential direction with respect to the arc direction centered on the rear fixed portion 19 or an arc direction centered on the rear fixed portion 19. With the arc-shaped elongated hole 32b extending in the vertical direction, the fixing position can be adjusted along the arc direction around the rear fixing portion 19. Thereby, when adjusting a fixed position, the distortion (For example, deformation | transformation of the elastic material with which the anti-vibration member 16 etc.) which arise in the back fixing parts 19 and 19 can be suppressed few. Therefore, since the vibration and noise generated in the differential 5 can be suppressed, the durability of the differential 5 can be improved.

  Further, the fixed position adjusting mechanism 30 of the present embodiment includes a cam mechanism 37 including a disc-shaped cam 35 having an insertion hole 35 a through which the bolt 26 is inserted at an eccentric position and a cam groove 36 formed in the bracket 31. ing. By providing such a cam mechanism 37 in the fixed position adjusting mechanism 30, the position of the bolt 26 with respect to the mounting hole 32 can be easily adjusted. Further, the position of the bolt 26 can be adjusted with high accuracy. Therefore, the installation position and the mounting angle of the propeller shaft 3 can be quickly adjusted, and can be adjusted to a desired mounting position and mounting angle.

  In the present embodiment, of the three fixing parts 19, 19, 20 that fix the differential 5 to the vehicle body side, the fixing part 20 including the fixing position adjusting mechanism 30 is more central than the other fixing parts 19, 19. It is arranged at a position close to the joint part 2. As a result, the fixing position on the side far from the center joint part 2 is adjusted by swinging the fixing position of the fixing part 20 on the near side along the arc direction with the fulcrum as the fulcrum. Adjustment of the mounting position and the mounting angle is facilitated. In addition, since the arrangement as described above makes it possible to increase the adjustment position (adjustment amount) of the propeller shaft 3 and the attachment angle with respect to the adjustment amount of the fixing position of the fixing portion 20, the attachment position of the propeller shaft 3 and It becomes easy to adjust the mounting angle to a desired position and angle.

[Second Embodiment]
Next, the mount structure concerning 2nd Embodiment of this invention is demonstrated. In the description of the second embodiment and the corresponding drawings, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted below. In addition, matters other than those described below are the same as those in the first embodiment. The same applies to other embodiments.

  FIG. 6 is an exploded perspective view showing components of a front fixing part (fixing part having the fixing position adjusting mechanism 30) 20-2 included in the mount structure according to the second embodiment of the present invention. In the first embodiment, the mounting hole 32 of the bracket 31 is a long hole (oversized hole) and the mounting hole 24 of the vibration isolation member 21 is a circular hole. In the present embodiment, on the contrary, The mounting hole 24-2 of the vibration isolation member 21 is a long hole, and the mounting hole 32-2 of the bracket 31 is a circular hole. Accordingly, the cam groove 36 formed in the bracket 31 in the first embodiment is formed in the vibration isolating member 21 in the present embodiment, and the cam 35 is rotatably engaged with the vibration isolating member 21. It is configured.

  The shape of the mounting hole 24-2 provided in the vibration isolating member 21 in the present embodiment is the rear as viewed from the lateral direction (horizontal direction) of the differential 5 similarly to the mounting hole 32 formed in the bracket 31 of the first embodiment. A straight elongated hole along the tangential direction with respect to the arc direction around the fixed portion 19 or an arc-shaped elongated hole along the arc direction around the rear fixed portion 19. Moreover, it is good also as a long hole of the shape in alignment with arcuate lines other than the circular arc centering on the back fixing | fixed part 19 (for example, elliptical arc etc.).

  In this embodiment, since the position of the bolt 26 is fixed with respect to the bracket 31 (subframe 17), detailed illustration is omitted, but the operation of the first embodiment shown in FIG. When the bolt 26 is positioned at the upper end of the mounting hole 24-2, the front of the case 15 is lowered, and when the bolt 26 is positioned at the lower end of the mounting hole 24-2, the front of the case 15 is raised. Also in this embodiment, the position of the bolt 26 relative to the mounting hole 24-2 can be adjusted by rotating the cam 35 eccentrically in the cam groove 36.

[Third Embodiment]
FIG. 7 is an exploded perspective view showing components of the front fixing portion 20-3 included in the mount structure according to the third embodiment of the present invention. In the first embodiment, the mounting hole 32 of the bracket 31 is a straight long hole 32a or an arc-shaped long hole 32b. In the present embodiment, the mounting hole 32 of the bracket 31 has a plurality of circular holes. A stepped elongated hole (stepped hole) 32-3 in which 32c is continuous is used. Accordingly, the cam mechanism 37 is omitted. The stepped hole 32-3 partially overlaps a plurality of (three in the figure) circular holes 32c arranged along the arc direction centering on the rear fixed portion 19 or the tangential direction with respect to the arc direction. It is a continuous shape in the state. Accordingly, a step corresponding to each circular hole 32c is formed on the inner peripheral surface of the stepped hole 32-3. Thus, the bolt 26 can be inserted in a position corresponding to each circular hole 32c.

  According to this embodiment, the fixing position of the bolt 26 with respect to the stepped hole 32-3 can be quantitatively adjusted (here, three stages). In addition, the number (number of steps) of the circular holes 32c constituting the stepped holes 32-3 is not limited to three, and may be other numbers. Further, in the present embodiment, the circular holes 32c are continuously formed in a partially overlapped state to form the stepped holes 32-3. In addition, the plurality of circular holes 32c are arranged along the arc direction or the tangential direction. It is also possible to arrange without overlapping.

[Fourth Embodiment]
FIG. 8 is a perspective view showing the mounting structure of the differential 5 according to the fourth embodiment of the present invention. In the present embodiment, in the first to third embodiments, the fixed portion 20 having the fixed position adjusting mechanism 30 installed on the front side of the differential 5 and the other fixed portions 19 installed on the rear side of the differential 5, 19 and 19 are interchanged with each other. That is, in the mount structure of the present embodiment, of the three fixing portions 19, 19, 20 that fix the case 15 to the subframe 17, the two fixing portions 19, 19 are arranged in front of the case 15. The one fixing portion 20 is disposed behind the case 15. The front fixing portions 19, 19 are arranged in front of the output shafts 12, 13 in the case 15, and are arranged side by side with respect to the input shaft 11. The rear fixed portion 20 includes a vibration isolating member 21 fixed to the rear end portion of the case 15. The fixing portions 19 and 19 and the fixing portion 20 are simply replaced with each other. The specific configurations of the fixing portions 19 and 19 and the fixing portions included in the mount structures of the first to third embodiments are as follows. Same as 20.

  In the mount structure of the present embodiment, the fixing positions 19 and 19 on the side close to the center joint portion 2 are used as fulcrums, and the fixing position of the fixing portion 20 on the far side is adjusted by swinging along the arc direction. As a result, as in the first to third embodiments, the mounting angle of the differential 5 can be adjusted, so that the mounting position (mounting height) of the propeller shaft 3 connected to the differential 5 as shown in FIG. The mounting angle (joint angle) formed by the propeller shaft 3 at the center joint portion 2 can be adjusted.

[Fifth Embodiment]
FIG. 9 is a view showing a transmission mounting structure according to the fifth embodiment of the present invention, and is a perspective view of the transmission 50 as viewed obliquely from the front. In the first to fourth embodiments, the mount structure of the present invention is applied to the differential 5. However, in the present embodiment, the mount structure of the present invention is applied to the transmission 50. The mount structure of the transmission 50 includes a fixed portion 53 for fixing the rear side (center joint portion 2 side) of the case 51 of the transmission 50 to the vehicle body, and an engine 55 fixed to the front end of the case 51. Two fixing portions 52 and 52 for fixing the front of the transmission 50 to the vehicle body are provided. And the fixed position adjustment mechanism 30 is arrange | positioned in the back fixing | fixed part 53. FIG. The fixing portion 53 includes an anti-vibration member 21 fixed to the case 51, a bracket 31 fixed to an unillustrated frame member on the vehicle body, and a bolt (shaft member) for attaching and fixing the anti-vibration member 21 to the bracket 31. 26 and a nut 27 are provided.

  The vibration isolation member 21 is formed with a circular mounting hole 24 through which the bolt 26 is inserted. The bracket 31 has a shape having side walls 31a and 31a facing both ends of the vibration isolation member 21, and mounting holes 32 and 32 through which the bolts 26 are inserted are formed in the side walls 31a and 31a. The mounting holes 32, 32 are straight long holes along the tangential direction with respect to the arc direction centered on the front fixing portion 52 as viewed from the lateral direction (horizontal direction) of the transmission 50, or the front fixing portion 52. It is a long hole having an arc shape along the center arc direction. The bolt 26 and the bracket 31 (attachment member) having the attachment holes 32 and 32 constitute a fixed position adjusting mechanism 30 for adjusting the fixed position of the fixing portion 53. In addition, a cam mechanism 37 including a disc-shaped cam 35 having an insertion hole 35 a through which the bolt 26 is inserted at an eccentric position and a cam groove 36 formed in the bracket 31 is provided.

  According to the mount structure of this embodiment, the fixing position of the rear fixing portion 53 can be swung and adjusted with the front fixing portion 52 as a fulcrum. Accordingly, the mounting angle of the transmission 50 can be adjusted, and the mounting position (mounting height) of the front propeller shaft 4 and the mounting angle of the propeller shaft 4 at the center joint portion 2 can be adjusted. Although detailed illustration is omitted, also in the transmission mount structure of the present embodiment, the positions of the fixing portion 53 having the fixing position adjusting mechanism 30 and the other fixing portions 52 and 52 are interchanged with each other, thereby fixing the fixing portion. 53 can be arranged on the front side (engine 55 side), and the fixing parts 52, 52 can be arranged on the rear side (center joint part 2 side). Thereby, it is easy to secure a work space for the fixed position adjusting mechanism 30.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. For example, in each of the above embodiments, the case where the fixing portions for fixing the differential 5 or the transmission 50 to the vehicle body side are provided at three positions has been described. However, the number of fixing portions provided in the mount structure of the present invention It may be a number. Further, the number of the fixing portions having the fixing position adjusting mechanism 30 is not limited to one and may be plural.

It is the schematic which shows the whole structure of the driving force transmission mechanism which has a differential and transmission provided with the mount structure concerning this invention. It is a perspective view which shows the differential mounting structure concerning 1st Embodiment of this invention. It is a disassembled perspective view which shows the component of the fixing | fixed part provided with the fixed position adjustment mechanism. It is a figure which shows the specific example of the shape of an attachment hole. It is a figure for demonstrating the adjustment procedure of the fixed position by a fixed position adjustment mechanism. It is a disassembled perspective view which shows the component of the front fixing | fixed part with which the mount structure concerning 2nd Embodiment of this invention is provided. It is a disassembled perspective view which shows the component of the front fixing | fixed part with which the mount structure concerning 3rd Embodiment of this invention is provided. It is a perspective view which shows the differential mounting structure concerning 4th Embodiment of this invention. It is a perspective view which shows the mount structure of the transmission concerning 5th Embodiment of this invention.

Explanation of symbols

1 Driving force transmission mechanism 2 Center joint part 3 Propeller shaft (rear side)
4 Propeller shaft (front side)
5 Differential (Differential gear)
15 Case 17 Subframe (vehicle body side member)
19, 19 Fixed part 20 Fixed part 21 Anti-vibration member (mounting member)
22a Inner cylinder 22b Outer cylinder 23 Elastic material 24 Mounting hole 26 Bolt (shaft member)
30 fixing position adjusting mechanism 31 bracket 32 mounting hole 35 cam 35a insertion hole 36 cam groove 37 cam mechanism 50 transmission 51 case 52, 52 fixing part 53 fixing part 55 engine

Claims (6)

A mounting structure for mounting a differential or transmission on a vehicle body,
A plurality of fixing portions for fixing the differential or the transmission to the vehicle body side;
At least one fixing part among the plurality of fixing parts has a fixed position adjusting mechanism capable of adjusting a fixing position;
By adjusting the fixed position by the fixed position adjusting mechanism, the propeller shaft connected to the center joint portion and the differential, or the mounting position of the propeller shaft connected to the center joint portion and the transmission, and the propeller shaft being the center A differential or transmission mount structure characterized in that the mounting angle formed at the joint portion can be adjusted. The fixed position adjusting mechanism is
A shaft member whose position is fixed with respect to either the differential or the transmission side, or the vehicle body side;
An attachment member having an attachment hole for inserting the shaft member so that the relative position thereof can be adjusted, and an attachment member whose position is fixed with respect to either the differential or the transmission side or the vehicle body side;
The differential or transmission mounting structure according to claim 1, further comprising:   The differential or transmission mounting structure according to claim 2, wherein the mounting hole is an oversized hole having an inner dimension larger than an outer dimension of the shaft member.   The differential or transmission mounting structure according to claim 2, wherein the mounting hole is a linear long hole extending along a tangential direction with respect to an arc direction around the other fixing portion.   The differential or transmission mounting structure according to claim 2 or 3, wherein the mounting hole is an arc-shaped elongated hole extending along an arc direction centering on the other fixing portion. The fixed position adjusting mechanism is
A cam mechanism comprising: a cam having an insertion hole through which the shaft member is inserted at an eccentric position; and a cam groove for rotatably engaging the cam formed on the mounting member side;
The differential or transmission mounting structure according to any one of claims 2 to 5, wherein the position of the shaft member with respect to the mounting hole can be adjusted by rotating the cam.

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