JP6309364B2 - Disassembly and assembly jig for vehicle drive system - Google Patents

Description

  The present invention relates to a jig used for disassembling and assembling operations of a vehicle drive device in which an engine side, a transmission, and a propeller shaft are interlockedly connected to each other.

  Conventionally, there is a vehicle driving apparatus disclosed in Patent Document 1 below. According to this publication, the drive device includes an engine side and a transmission that outputs the driving force after inputting the driving force output from the engine side and shifting to a desired speed. In general, a vehicle drive device includes a propeller shaft that transmits a driving force output from the transmission to the wheels. The engine side and the transmission are detachably supported on the vehicle body in a state of being assembled with each other, and the driving force output from the driving device is mainly used for traveling of the vehicle.

  Specifically, the engine side includes an engine that is an internal combustion engine, and a flywheel and a clutch that are sequentially supported on the end side of the crankshaft of the engine. A portion on the axial center of the driven member of the clutch is an output portion for driving force, and a spline is formed in the output portion.

  The transmission includes a transmission case that constitutes an outer shell thereof, a plurality of power transmission shafts arranged in parallel with each other inside the transmission case, and supported by the respective shafts and capable of meshing with each other. Are coupled to each other. Of each of the shafts, an end portion of one shaft serves as a mission input unit for inputting driving force from the engine side, and a spline is formed in the mission input unit. In addition, among the above-mentioned shafts, the end portion of the other shaft is used as a mission output unit that outputs a driving force from the transmission, and a spline is formed in the mission output unit. A spline is formed at the input portion of the propeller shaft.

  The engine side, the transmission, and the propeller shaft are assembled to each other to assemble the drive unit. When the drive unit is supported by the vehicle body, the engine-side output unit and the mission input unit have their axial centers. The transmission output portion and the input portion of the propeller shaft pass through a through hole formed in the transmission case, and are spline-fitted to each other on the shaft center. It is assumed that

  Here, when disassembling the drive unit in order to perform maintenance or inspection on the transmission, for example, in the drive unit, usually, the propeller shaft that is spline-fitted to the transmission output part through the through hole is usually first. , Detach from the mission output unit. Next, with the engine side supported by the vehicle body, the transmission is lifted by a chain block or the like and removed from the engine side to perform the maintenance and the like.

  On the other hand, when assembling the above drive device, it is only necessary to assemble the transmission on the engine side and assemble the propeller shaft to the transmission output portion of the transmission in the reverse order of the above. The assembly operation of the drive device can be completed.

JP-A-9-222133

  By the way, when the propeller shaft is detached from the transmission output portion of the transmission during the disassembling work of the drive device described above, the through hole remains open. For this reason, there is a possibility that a part of the lubricating oil for the gear set in the transmission case leaks unnecessarily to the outside through the through hole.

  On the other hand, when assembling the transmission on the engine side during the assembly operation of the drive unit, the splines of the engine-side output unit and the mission input unit are brought close to each other on the same axial center. In this case, the positions of the spline teeth of one of the two splines and the tooth spaces of the other spline around the axis are random. For this reason, it is difficult to fit the splines together by merely bringing the two splines close to each other on the axis. Therefore, in order to facilitate this spline fitting, at least one of the two splines is rotated slightly around its axis, so that the teeth of the one spline and the other spline described above are rotated. It is conceivable to match the positions of the tooth gaps around the axis with each other.

  However, as described above, the work for matching the teeth of one spline and the tooth groove of the other spline of both splines is cumbersome, and accordingly, the assembly work of the drive device may be complicated accordingly. is there.

  The present invention has been made paying attention to the above situation, and an object of the present invention is that the lubricating oil in the transmission mission case leaks unnecessarily when disassembling the vehicle drive device. On the other hand, the assembly operation of the drive device can be easily performed, and each operation can be achieved with a simple configuration.

In the first aspect of the invention, the engine side case 7 of the engine side 2 and the transmission case 13 of the transmission 3 are detachably connected to each other, and the output portion 11 of the engine side 2 and the mission input portion 18 of the transmission 2 are connected to each other. The transmission case 21 is connected to the mission case 13 so as to be detachably splined, a through hole 25 is formed in the mission case 13, and the mission input unit 18 is coupled to the mission input unit 18 in the mission case 13. A disassembly and assembly jig for a vehicle drive device in which a propeller shaft 4 provided on the outside side is spline-fitted through the through-hole 25 so as to be detachable,
When the propeller shaft 4 is detached from the mission output portion 21 (solid line in FIGS. 1 and 2), a cap 39 that can open and close the through hole 25 and the cap 39 are formed. When the hole 25 is closed, the engagement portion 40 detachably engages with the mission output portion 21, and the cap 39 together with the engagement portion 40 by the external force applied from the outside of the mission case 13. A disassembly and assembling jig for a driving device of a vehicle, comprising a handle portion 41 that enables rotation A about an axis 20 of the output portion 21.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, the engine side case on the engine side and the transmission case on the transmission side are detachably connected to each other, and the output part on the engine side and the transmission input part on the transmission are fitted in a splined manner. A through hole is formed in the mission case, and a mission output portion connected to be interlocked with the mission input portion in the mission case and a propeller shaft provided outside the mission case pass through the through hole. Disassembling and assembling jig for a vehicle drive device that is spline-fitted so as to be detachable,
A cap is provided that allows the through hole to be opened and closed when the propeller shaft is detached from the mission output portion.

  For this reason, when the propeller shaft is detached from the mission output part during the disassembly work of the drive device, the through hole is opened. In this case, if the through hole is closed with the cap of the jig, the mission is The lubricating oil in the case is prevented from leaking unnecessarily through the through hole.

  The jig is formed in a cap, and when the through hole is closed by the cap, an engaging portion that is detachably engaged with the mission output portion, and an external force applied from the outside of the mission case. Is provided with a handle portion that enables the cap to rotate about the axis of the mission output portion together with the engagement portion, thereby producing the following effects.

  That is, in the assembly operation of the drive device, when the engine-side output portion and the mission input portion are spline-fitted on the same axis, the spline teeth of one of the two splines and the splines of the other spline. Each position around the shaft center with the tooth gap is random, and there is a possibility that it is difficult to fit the splines between the two splines.

  Therefore, the handle portion of the jig whose through hole is closed by the cap is operated to rotate the handle portion around the axis of the mission output portion. Then, the mission output part engaged with the engaging part of the jig is turned, and the mission input part linked to the mission output part is turned. Then, by rotating the mission input unit, if the spline teeth (or tooth gaps) of the mission input unit are matched with the spline teeth (or teeth) of the engine output side spline, Spline fitting between splines can be easily performed. Therefore, the assembling work of the drive device can be facilitated accordingly.

  In the above-described disassembling and assembling operations of the driving device, since one jig can be shared while the through hole is closed as described above, each operation can be achieved with a simple configuration.

It is a development perspective view of a drive device and a jig of vehicles. FIG. 2 is a partial side sectional view of what is shown in FIG. 1. It is the III-III arrow directional view of FIG.

  The present invention relates to a vehicle drive device disassembly and assembly jig according to the present invention. When disassembling the drive device, the lubricating oil in the transmission transmission case is prevented from leaking unnecessarily, and the drive device is assembled. In order to realize the object of facilitating the work and enabling each of the work to be accomplished with a simple configuration, a mode for carrying out the present invention is as follows.

  That is, in the vehicle drive device, the engine side case on the engine side and the transmission case on the transmission side are detachably connected to each other, and the output side on the engine side and the transmission input part on the transmission are spline-fitted so as to be detachable. doing. Further, a through hole is formed in the mission case, and a mission output unit connected to be interlocked with the mission input unit in the mission case and a propeller shaft provided on the outside of the mission case serve as the through hole. Splined so that it can be inserted and removed.

  The disassembly and assembly jig for the vehicle drive device described above is formed on the cap, which allows the through-hole to be opened and closed when the propeller shaft is detached from the mission output portion. When the through hole is closed, an engagement portion that is detachably engaged with the mission output portion, and an axis of the mission output portion together with the engagement portion by the external force applied from the outside of the mission case And a handle portion that is rotatable about the center.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a driving device for driving a vehicle exemplified by an automobile.

  The driving device 1 receives an engine side 2, a driving force output from the engine side 2, shifts to a desired speed and then outputs the driving force, and a driving output from the transmission 3. And a propeller shaft 4 for transmitting force to a wheel side (not shown). The engine side 2 and the transmission 3 are detachably supported on the vehicle body via an elastic engine mount (not shown) in a state where they are assembled to each other.

  Specifically, the engine side 2 includes an engine 6 that is an internal combustion engine, an engine side case 7 that includes a crankcase of the engine 6 and constitutes an outer shell of the engine side 2, and the engine side case 7 has an internal structure. A crankshaft (not shown) that is supported in this manner, and a flywheel 8 and a clutch 9 that are sequentially supported on the shaft end side of the crankshaft. A portion of the driven member of the clutch 9 on the shaft center 10 is an output portion 11 for driving force, and an output spline 12 that is an inner spline is formed on the shaft center 10 of the output portion 11.

  The transmission 3 includes a transmission case 13 that constitutes an outer shell thereof, a plurality of power transmission shafts 14 and 15 that are arranged in parallel in the transmission case 13 and supported by the transmission case 13, and each of these shafts. 14 and 15 and a gear set (not shown) that can be engaged with each other and interlockedly connect the shafts 14 and 15, and is housed in the transmission case 13, and the gear set is oil bathed and lubricated. And lubricating oil 16.

  Of the shafts 14, 15, the end portion of one shaft 14 in the direction of the axis 17 is a mission input unit 18 for inputting driving force from the engine side 2. An input spline 19 that is an outer spline is formed. The output spline 12 and the input spline 19 can be fitted to each other on the shafts 10 and 17 that are coaxial with each other so that they can be fitted to and detached from each other. The shape of the outer spline out of the above-mentioned output and input splines 12 and 19 may be reversed.

  Of the shafts 14 and 15, the end of the other shaft 15 in the direction of the axis 20 is a mission output unit 21 that outputs a driving force from the transmission 3. An output spline 22 that is an outer spline is formed.

  A through hole 25 is formed in the transmission case 13 forming the outer shell of the transmission 3, and an oil seal 26 is fitted to the inner peripheral surface of the through hole 25. On the other hand, an input spline 29 which is an inner spline is formed on the axis 28 of the input portion 27 of the propeller shaft 4 for inputting the driving force from the mission output portion 21. The output spline 22 of the transmission output portion 21 of the transmission 3 and the input spline 29 of the input portion 27 of the propeller shaft 4 are fitted to each other through the through holes 25 on the shafts 20 and 28 that are coaxial with each other. The spline can be removably fitted. It should be noted that the shape of the outer spline out of the input splines 22 and 29 may be reversed.

  In the state in which the engine side 2, the transmission 3, and the propeller shaft 4 are assembled to each other and the drive device 1 is assembled, the opening edge 33 on the output portion 11 side of the engine side case 7 on the engine side 2. Are connected to each other by a plurality of fasteners 35, and an output spline of the output unit 11 is connected to each other by a plurality of fasteners 35. 12 and the input spline 19 of the mission input unit 18 are spline-fitted to each other on the axial centers 10 and 17 thereof.

  In addition to the above state, the output spline 22 of the transmission output portion 21 of the transmission 3 and the input spline 29 of the input portion 27 of the propeller shaft 4 are mutually connected through the through holes 25 on the shaft centers 20 and 28 thereof. Splines are fitted so as to be slidable in the axial direction (dashed line in FIG. 2). In this case, the outer peripheral surface of the input portion 27 of the propeller shaft 4 is in sliding contact with the elastic lip portion on the inner peripheral surface of the oil seal 26, and the sliding contact portion is sealed. This prevents the lubricating oil 16 in the transmission case 13 from leaking outside through the through hole 25.

  In the above case, when the propeller shaft 4 is detached from the mission output portion 21 (solid line in FIGS. 1 and 2), the through hole 25 is opened.

  A jig 38 is provided for use in disassembling and assembling the driving device 1.

  The jig 38 is located on the axis 20 of the mission output portion 21 and is removably fitted into the open through hole 25 (two-dot chain line in FIGS. 1 and 2). A shaft-shaped cap 39 that can be opened and closed, and is formed on the cap 39 on the axis of the cap 39. When the through-hole 25 is closed by the cap 39, the cap can be engaged with and disengaged from the mission output unit 21. The engaging portion 40 that is an engaging hole that engages with the gear case 13 and an operating force from the outside of the mission case 13 are input to connect the cap 39 and the engaging portion 40 around the axis 20 of the mission output portion 21. And a disc-shaped handle portion 41 that can be rotated A.

  The outer peripheral surface of the cap 39 has the same diameter as the outer peripheral surface of the input portion 27 of the propeller shaft 4 and is in sliding contact with the inner peripheral surface of the oil seal 26 to seal the sliding contact portion. Further, the engaging portion 40 specifically includes some teeth (2 to 2) required for strength among a plurality of teeth of the inner spline that are spline-fitted to the output spline 22 of the mission output portion 21. Only four) are left.

  According to the above configuration, the jig 38 has the cap 39 that can open and close the through hole 25 when the propeller shaft 4 is detached from the mission output unit 21 (solid line in FIGS. 1 and 2). Yes.

  For this reason, when disassembling the drive device 1 such as when the clutch disk in the clutch 9 on the engine side 2 is to be replaced, the transmission 3 is detached from the engine side 2 and the transmission output portion of the transmission 3 is When the propeller shaft 4 is detached from the transmission hole 21, the through hole 25 of the mission case 13 is opened. In this case, if the through hole 25 is closed by the cap 39 of the jig 38, the mission The lubricating oil 16 in the case 13 is prevented from leaking unnecessarily through the through hole 25.

  On the other hand, the assembly operation of the drive device 1 can be performed as follows.

  That is, the engine side 2 is supported by the vehicle body so that the engine side 2 maintains a predetermined posture around the axis 10 of the output portion 11. On the other hand, the transmission 3 is lifted by a chain block, for example, and is supported so that the transmission 3 maintains a predetermined posture around the axis 17 of the mission input unit 18. In this state, the axial centers 10 and 17 are positioned coaxially with each other. The above-mentioned output and input splines 12 and 19 are brought close to each other on the coaxial shaft centers 10 and 17. At this time, the positions of the spline teeth of one spline and the tooth spaces of the other spline out of the input splines 12 and 19 around the shaft centers 10 and 17 are random. Spline fitting between the input splines 12 and 19 may be difficult.

  Therefore, the handle portion 41 of the jig 38 that closes the through hole 25 with the cap 39 is operated to rotate the handle portion 41 about the axis 20 of the mission output portion 21. Then, the mission output portion 21 engaged with the engaging portion 40 of the jig 38 is turned A, and the mission input portion 18 linked to the mission output portion 21 is turned A. . Then, the rotation (A) of the mission input unit 18 causes the teeth (or tooth grooves) of the input spline 19 of the mission input unit 18 to become the tooth grooves (or teeth) of the output spline 12 of the output unit 11 of the engine side 2. If they match, the spline fitting between the input splines 12 and 19 can be easily performed thereafter. Therefore, the assembly operation of the drive device 1 can be facilitated accordingly.

  In the disassembly and assembling work of the driving device 1 described above, since one jig 38 can be shared while the through hole 25 is closed as described above, each work described above has a simple configuration. Can be achieved.

  The jig 38 is preferably made of a resin such as polyethylene. Further, the external force applied to the handle portion 41 may be a gripping force directly applied by an operator, but may be indirectly applied via a tool or the like.

DESCRIPTION OF SYMBOLS 1 Drive device 2 Engine side 3 Transmission 4 Propeller shaft 6 Engine 7 Engine side case 10 Shaft center 11 Output part 12 Output spline 13 Mission case 14 Power transmission shaft 15 Power transmission shaft 16 Lubricating oil 17 Shaft center 18 Mission input part 19 Input spline 20 shaft center 21 mission output section 22 output spline 25 through hole 27 input section 28 shaft center 29 input spline 38 jig 39 cap 40 engagement section 41 handle section A rotation

Claims (1)

The engine side case on the engine side and the transmission mission case are detachably connected to each other, and the engine side output part and the transmission input part of the transmission are detachably splined to each other. Is formed, and the mission output part connected to be interlocked with the mission input part in the mission case and the propeller shaft provided on the outer side of the mission case are spline-fitted so that they can be fitted and removed through the through hole. Disassembling and assembling jig for a vehicle drive device,
A cap that can open and close the through hole when the propeller shaft is detached from the mission output portion, and a cap that is formed on the cap, and can be engaged with and disengaged from the mission output portion when the through hole is closed by the cap. An engaging portion that engages with the transmission case, and a handle portion that enables the cap to rotate about the axis of the mission output portion together with the engaging portion by an external force applied from the outside of the mission case. Disassembling and assembling jig for a vehicle drive device characterized by the above.

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