JP2001246951A - Vehicular motor assist fitting structure, and fitting method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular motor assist fitting structure, and a fitting method thereof in which hybrid vehicle using both an engine and a transmission of an existing gasoline engine vehicle is realized, and a motor case can be easily fixed to an engine even when an intense magnetic force is present when a motor rotor is inserted in a motor stator. SOLUTION: An engine side bolt fitting portion is provided on the engine, a motor side bolt through hole is made in the axial direction of the motor case corresponding to the engine side bolt fitting part, a transmission side bolt fitting portion is provided on a transmission case in the axial direction corresponding to the motor side bolt through hole, a stud bolt which is fitted to the transmission side bolt fitting portion and fitted to the engine side bolt fitting portion through the motor side bolt through hole is provided, the stud bolt is provided with a bolt side stepped portion having the outside diameter larger than that of other portions in a portion in contact with the motor case when fixing the motor case and the transmission case to the engine, and the motor side bolt through hole of the motor case is provided with a hole side stepped portion having the inside diameter larger than that of the other portions corresponding to the bolt side stepped portion of the stud bolt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor-assisted mounting structure for a vehicle and a mounting method thereof, and more particularly, to a vehicle provided with a generator having a power generating function driven by electric energy in an engine driven by fuel combustion. The present invention relates to a motor-assisted mounting structure and a mounting method thereof.

[0002]

2. Description of the Related Art As a vehicle, there is a so-called hybrid vehicle in which a generator driven by electric energy is directly connected to an engine driven by combustion of fuel and provided with a power generating motor (motor). The generator includes a motor rotor fixed to a rotor shaft, and a motor stator (coil) fixed to a motor case corresponding to the motor rotor. The rotor shaft is attached to a crankshaft together with a flywheel. A transmission case of the transmission is connected to the motor case.

In this hybrid vehicle, an engine control means and a motor control means for controlling the operation state of the engine and the generator are provided, and the operation state of the engine and the generator is controlled by the engine control means and the motor control means during the operation of the vehicle. The required performance (fuel consumption, harmful exhaust emission component value, power performance, etc.) is achieved at a high level by detecting and controlling the operating states of the engine and the generator.

[0004] As a structure of such a hybrid vehicle, for example, Japanese Patent Application Laid-Open Nos.
It is disclosed in Japanese Patent Publication No. 1-78555. JP-A-10-
No. 80098 discloses a rotor provided on a rotating shaft, a stator coil provided, an armature facing the outer peripheral surface of the rotor provided, and an armature provided between a flywheel housing and a clutch housing. A housing means for supporting is provided. Japanese Patent Application Laid-Open No. 11-78555 discloses a motor in which a motor generator is directly connected to an output shaft of an engine, and a stator motor is arranged via a ring gear on an outer peripheral portion of a flywheel connected to a rotor of the motor generator. It is.

[0005]

However, in the prior art disclosed in Japanese Patent Application Laid-Open No. 10-80098, the method of fastening the flywheel housing, the coil housing and the clutch housing, and the method of connecting the flywheel housing, the crankshaft and the rotating shaft to each other are disclosed. The method of fastening to the flywheel is not specified. The number of fasteners and the fastening method between the flywheel housing and the clutch housing are limited when the engine and the transmission of the existing gasoline engine vehicle are diverted to the hybrid vehicle, and the flywheel housing, the coil housing, and the clutch housing are limited. It is necessary to tighten together. Similarly, when the crankshaft, the rotating shaft and the flywheel are fastened together, it is necessary to fasten them together. Furthermore,
When the rotor is inserted into the armature or when the rotor is removed from the armature, the armature core and the permanent magnet attract each other due to a strong magnetic force. Furthermore, when the rotating shaft and flywheel are fastened together to the crankshaft, the rotating shaft with the permanent magnet is attracted to the armature core by magnetic force and becomes unstable, so it is necessary to devise a way to fix the rotating shaft. There is a disadvantage that there is.

Further, in the above-mentioned Japanese Patent Application Laid-Open No. H11-78555, the tightening of the mounting bolts of the starter motor is specified, but the method of fastening the cylinder block, the transmission case and the housing is also specified. In addition, the length of the bolts that fasten the cylinder block, motor case, and transmission case together increases, and when the bolts are inserted into the bolt holes from the cylinder block side or the transmission case side, they may interfere with other parts. There is a disadvantage that there is.

[0007]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned disadvantages, the present invention provides an engine driven by the combustion of fuel, which is provided with a generator motor which is driven by electric energy and has a power generation function. The generator includes a motor rotor fixed to a rotor shaft and a motor stator fixed to a motor case corresponding to the motor rotor,
In a motor-assisted mounting structure for a vehicle, in which a transmission case together with a transmission case is mounted on the engine, an engine-side bolt mounting portion is provided on the engine, and the motor case has an axial direction corresponding to the engine-side bolt mounting portion. The transmission case is provided with a motor-side bolt through-hole, and the transmission case is provided with a transmission-side bolt mounting portion in the axial direction corresponding to the motor-side bolt through-hole. A stud bolt is provided which is inserted into the hole and is attached to the engine-side bolt attachment portion. The stud bolt has a portion that comes into contact with the motor case when the motor case and the transmission case are fixed to the engine and is different from other portions. Also has a bolt-side step with a large outer diameter Wherein the said motor-side bolt holes of the motor case, characterized in that in correspondence with the bolt-side stepped portion of the stud bolt holes made side step portion of the larger inner diameter than other portions.

[0008]

According to the present invention, a motor case and a transmission case are attached to an engine by stud bolts inserted through the motor case, so that a hybrid vehicle using an engine and a transmission of an existing gasoline engine vehicle can be realized. In addition, since the bolt side step is formed in the stud bolt and the hole side step is formed in the motor side bolt through hole of the motor case, the bolt side step and the hole side step are separated. Match,
Even if there is a strong magnetic force when the motor rotor is inserted into the motor stator, the motor case can be easily fixed to the engine.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 to 10 show the first embodiment of the present invention.
It shows an embodiment. 9, reference numeral 2 denotes an engine mounted on a hybrid vehicle (not shown), 4 denotes a cylinder block, 6 cylinder heads, 8 denotes a crank lower case, 10 denotes an oil pan, 12 denotes a crankshaft, 14 denotes a clutch, and 16 denotes a speed change. , 18 is a differential machine, 20 is a transmission case, 22 is a generator motor (motor) having a motor rotor 24 and a motor stator (coil) 26, 28 is a rotation detecting mechanism having a sensor rotor 30 and a sensor stator (coil) 32 It is.

[0010] The engine 2 is driven by burning fuel, and an existing gasoline engine vehicle is diverted to a hybrid vehicle. The clutch 14 transmits and shuts off the engine output from the engine 2 to the transmission 16, and is a diversion of an existing gasoline engine vehicle to a hybrid vehicle. The transmission 16
Various gears are changed, and an existing gasoline engine vehicle is diverted to a hybrid vehicle.

The engine 2 is provided with a generator motor 22 directly connected to a side surface on the transmission 16 side.

The power generating motor 22 constitutes a motor assist device and has a function of generating power by being driven by electric energy. The motor rotor 24 is fixed to a rotor shaft 34, and the motor stator 2 corresponds to the motor rotor 24.
6 is fixed to the motor case 36. As shown in FIGS. 1 to 3, the generator motor 22 is installed between the side of the cylinder block 4 and the clutch 14 on the transmission 16, and the motor case 36 is connected to the side of the cylinder block 4 and the transmission 1.
6 and the end face of the transmission case 20. A closing plate 40 that closes the cooling water passage 38 is attached to an end surface of the motor case 36 on the transmission case 20 side by plate attaching bolts 42.

The rotor shaft 34 has a support portion 48 formed on the clutch 14 side for supporting a bearing 46 of the input shaft 44 of the clutch 14, and an inner tubular portion 50 that is directed in the axial direction.
On the cylinder block 4 side, a flange portion 52 that is directed radially on the other end side of the inner tubular portion 50 and a mounting step portion 54 for fixing the motor rotor 24 on the outer peripheral surface of the central portion are formed to correspond to the inner tubular portion 46. An outer tubular portion 56 and a wheel portion 58 radially oriented on the clutch 14 side;
It is composed of The clutch 14 of the wheel portion 58
A clutch surface 60 is formed on the side end surface. A fitting portion 62 into which the sensor rotor 30 is fitted is formed on the outer peripheral surface of the flange portion 52. Clutch surface 60
, The clutch 14 is assembled.

The motor rotor 24 is fixed to the mounting step 54 of the outer tubular portion 56 with a motor rotor mounting bolt 64 oriented in the axial direction. The fitting portion 62 includes the sensor rotor 3
0 is attached. The motor stator 26 is fixed to the motor case 36 with motor stator mounting bolts 66 that are oriented in the axial direction, and sensor stator mounting bolts 68 that are oriented in the axial direction so as to correspond to the sensor rotor 30.
The sensor stator 32 is fixed.

When the flange 52 of the rotor shaft 34 is fixed to the cylinder block 4, a flywheel 70 is interposed between the flange 52 and the cylinder block 4. A ring gear 72 is fixed to the outer peripheral surface of the flywheel 70.

As shown in FIG. 2, a bolt jig hole 74 is formed at the center of the end surface of the crankshaft 12 corresponding to the bearing 46 of the input shaft 44 of the clutch 14.
A crankshaft-side stepped portion 12A for engaging the inner diameter portion 70A of the flywheel 70 is formed. Further, a wheel-side stepped portion 70B that opens to the transmission 18 side and engages the rotor shaft 34 is formed in the inner diameter portion 70A of the flywheel 70.

As shown in FIG. 1, a motor case 36 is provided on each side of the cylinder block 4 and the crank lower case 8.
And the transmission case 20, two first and second block side stud bolts 76-1 and 76-2 attached to the cylinder block 4, and two first and second lower sides attached to the crank lower case 8. Stud bolt 78
-1 and 78-2.

For this reason, as shown in FIG. 1, on the side surface of the cylinder block 4, two first and second bolts are provided in the axial direction with the axis C of the crankshaft 12 interposed therebetween.
The second block side bolt screw holes 80-1 and 80-2 are formed, and the end 8A of the crank lower case 8 is provided as an engine side bolt mounting portion in the axial direction with the axis C of the crank shaft 12 interposed therebetween. Two first and second lower bolt through holes 82-1 and 82-2 are formed. Also, as shown in FIGS. 1 and 10, the motor case 36 has two bolt screw holes 80-1 and 80-2 corresponding to the first and second block side.
The first and second motor block side bolt through holes 84-
1 and 84-2 are formed, and two first and second lower motor side bolt through holes 86-1 and 86- corresponding to the first and second lower side bolt through holes 82-1 and 82-2. 2 are formed. Further, the end 20A of the transmission case 20
The first and second motor block side bolt through holes 84-
1 and 84-2, two first and second transmission-side bolt through holes 88 as transmission-side bolt mounting portions.
-1, 88-2 are formed, and two first and second transmission sides are provided as transmission-side bolt mounting portions corresponding to the first and second lower motor-side bolt through holes 86-1 and 86-2. Bolt screw holes 90-1 and 90-2 are formed.

At the place where the first block side stud bolt 76-1 is attached, the first block side knock pipe member 92 is connected to the joint between the cylinder block 4 and the motor case 36.
-1 is provided, and a second block side knock tube member 92-2 is provided at a joint portion between the motor case 36 and the transmission case 20. Similarly, the second
At the mounting portion of the lower stud bolt 76-2,
A first lower-side knock pipe member 94-1 is provided at a joint between the cylinder block 4 and the motor case 36, and a second lower-side knock pipe member 94-2 is provided at a joint between the motor case 36 and the transmission case 20. Is provided.

As shown in FIGS. 4 to 6, the motor case 3 is located at the first block side stud bolt 76-1.
The first block side stud bolt 76-1 is a portion of the first block side stud bolt 76-1, which is a portion of the first bolt having an outer diameter D2 which is larger than the outer diameter D1 of the other portion, when the motor case 36 is fixed to the engine 2 with the transmission case 6 A first bolt side stepped portion 96-1 is provided by the side large diameter portion 76-1A, and a first motor block side bolt through hole 84- of the motor case 36 is provided.
1, a first hole-side large-diameter portion 8 having an inner diameter D4 larger than the inner diameter D3 of the other portion corresponding to the first bolt-side stepped portion 96-1.
A first hole side stepped portion 98-1 is provided by 4-1A. Similarly, the second block side stud bolt 76
In the portion of -2, the second block side stud bolt 76-2 is provided with the second bolt side stepped portion 96-2, and the second motor block side bolt through hole 84-2 of the motor case 36 is provided with the second bolt side stepped portion 84-2. A second hole side step portion 98-2 corresponding to the 2 bolt side step portion 96-2 is provided.

As shown in FIG. 1, a motor case 36 and a transmission case 20 are attached to a cylinder block 4 by first and second cylinders.
The block side stud bolts 76-1, 76-2 and the first,
When fixed with the second lower side stud bolts 78-1 and 78-2, the first and second block side stud bolts 76 are in contact with the end 20A of the transmission case 20.
The first and second block-side nuts 100-1 and 100-2 are screwed from the transmission 16 side to end portions of the first and second end portions 76-1 and 76-2, and the first and second block side nuts 100-1 and 100-2 are in contact with the end 8A of the crank lower case 8. 1. Second lower stud bolt 78-1, 78
-2, the first and second lower nuts 102-1,
102-2 is screwed from the engine 2 side.

As shown in FIG. 3, the rotor shaft 34 is mounted on the crankshaft 12 via a flywheel 70 by a shaft mounting bolt 104.

For this reason, as shown in FIG. 3, a plurality of bolt fixing screw holes 106 are formed on the end face of the crankshaft 12 as crank side bolt mounting portions. As shown in FIGS. 2 and 7, the flywheel 70 has a plurality of wheel-side bolt through holes 108 having an inner diameter D5 in the axial direction corresponding to the plurality of bolt fixing screw holes 106. Further, in the flange portion 52 of the rotor shaft 34, a plurality of shaft side bolt through holes 110 having an inner diameter D6 are formed in the axial direction corresponding to the plurality of wheel side bolt through holes 108. In this case, as shown in FIG. 7, the inner diameter D6 of the shaft side bolt through hole 110 is formed to be larger than the inner diameter D5 of the wheel side bolt through hole 108. In addition, a wheel-side stepped portion 70B is provided on the end face on the inner diameter side of the flange portion 52 of the rotor shaft 34.
Is formed on the rotor shaft side stepped portion 52A.

When assembling the rotor shaft 34 and the flywheel 70 to the engine 2 side, as shown in FIGS. 2 and 3, a bolt jig 112, a stud jig 114, and a plate jig 116 are used. The bolt jig 112 is formed by forming a screw on the outer peripheral surface of a shaft portion. As shown in FIGS. 7 and 8, the stud jig 114 has a large-diameter portion 114A on the transmission 16 side having an outer diameter D7 substantially equal to the inner diameter D6 of the shaft-side bolt through-hole 110, and a wheel-side bolt penetrating hole on the engine 2 side. A jig-side step portion 118 is formed by the small-diameter portion 114B having the same outer diameter D8 as the hole 108 and smaller than the large-diameter portion 114A. In the plate jig 116, a bolt jig insertion hole 120 is formed in a central portion, a stud jig insertion hole 122 is formed, and a plurality of plate side positioning holes 124 are formed in an outer edge portion. The wheel portion 58 of the rotor shaft 36 has a shaft-side positioning hole 126 corresponding to one plate-side positioning hole 124-1 and a shaft-side positioning hole 124-2 corresponding to the other plate-side positioning hole 124-2. As a result, a positioning bolt screw hole 128 is formed.

One plate side positioning hole 124-1
The plate positioning pin 130 is inserted into the shaft-side positioning hole 126. In addition, positioning bolt screw hole 1
To 28, a positioning bolt 132 inserted into the other plate-side positioning hole 124-2 is screwed. The bolt jig 112 is inserted into the bearing 46 from the bolt jig insertion hole 120 and screwed into the bolt jig hole 74 of the crankshaft 12. The stud jig 114 has a large diameter portion 114A inserted through the stud jig insertion hole 122 and the shaft side bolt through hole 110, and a small diameter portion 114B inserted through the wheel side bolt through hole 108 and attached to the bolt fixing screw hole 106.

Next, the operation of the first embodiment will be described.

On the rotor shaft 34, the motor rotor 24 is assembled to the outer tubular portion 56 with the motor rotor mounting bolt 64, and the sensor rotor 30 is assembled to the fitting portion 62. The motor case 36 includes a motor stator 26.
Of the sensor stator 32 and the sensor stator mounting bolt 6.
Assemble with 8.

As shown in FIG. 1, the motor case 36 and the transmission case 20 are provided on the side surface of the cylinder block 4 and the side surface of the crank lower case 8 with the first and second block side stud bolts 76-1 and 76-2. And the first and second lower stud bolts 78-1 and 78-2.
The motor case 36 positioned by the first and second block-side knock pipe members 92-1 and 92-2 is provided on the side surface of the cylinder block 4 with the first and second block-side stud bolts 76-1 and 76-2. Assemble with At this time, the motor case 36 is connected to the first and second block side stud bolts 76.
-1, 76-2, the first and second bolt side stepped portions 96-1,
96-2 is formed, and the motor case 36
First and second motor side bolt through holes 84-1 and 84-2
Since the first and second hole-side step portions 98-1 and 98-2 are formed on the cylinder block 4, these step portions 96 and 98 abut each other and are fixed to the side surface of the cylinder block 4.

Thus, when the motor rotor 24 fixed to the rotor shaft 34 is inserted into the motor stator 26 fixed to the motor case 36, the motor case 36 can be connected to the cylinder without any trouble even if it is attracted by a strong magnetic force. It can be easily fixed to the block 4.

The motor case 36 and the transmission case 20 are connected to the first and second block-side knock pipe members 92-.
1, 92-2 and first and second lower-side knock pipe members 94-
1, 94-2. The first and second lower stud bolts 78-1 and 78-2 are screwed and set on the transmission case 20, and the first and second motor lower-side through holes 86-1 and 86-2 of the motor case 36 are formed. First and second lower side through-holes 82 of crank lower case 8
1 and 82-2, and the first and second lower nuts 102-1 and 102-2 are tightened from the engine 2 side toward the end 8A of the crank lower case 8. The first and second block side stud bolts 76-1 and 76-2 are connected to the first and second motor block side bolt through holes 84-1 and 84-1, respectively.
-2 and the first and second blocks penetrate through the first and second transmission-side through holes 88-1 and 88-2 of the transmission case 20 and extend from the transmission 16 toward the end 20 </ b> A of the transmission case 20. The side nuts 100-1 and 100-2 are tightened.

Thus, in a hybrid vehicle,
Engine 2 and transmission 16 of an existing gasoline engine vehicle
Can be used, and the use of the stud bolts 76, 78 can avoid interference with other parts.

Further, as shown in FIGS.
The inner diameter D6 of the shaft side bolt through hole 110 formed in the flywheel 70 is the wheel side bolt through hole 108 formed in the flywheel 70.
Is larger than the inner diameter D5 of the flywheel 70,
The stud jig 114 is temporarily fixed to the crankshaft 12 by a jig-side step portion 118. The plate jig 116 is attached to the rotor shaft 34 by plate positioning pins 130 and positioning bolts 132. The bolt jig 112 is attached to the plate jig 116. And
The bolt jig 112 is brought into contact with the bolt jig hole 74 of the crankshaft 12 to support the attraction between the motor rotor 24 and the motor stator 26. The stud jig 114 and the shaft-side bolt through hole 110 constitute a guide mechanism that can slide, and the rotor shaft 34 can be inserted and removed by loosening rotation and tightening rotation of the bolt jig 112.

Thus, when the rotor shaft 34 and the flywheel 70 are jointly fastened to the crankshaft 12 with the shaft mounting bolts 104, these components can be temporarily fixed, so that stable assembly is possible.

That is, the rotor shaft 34 and the flywheel 70
When assembling to the crankshaft 12, the bolt jig 1
12, a stud jig 114, and a plate jig 116, and the stud jig 114 has a large-diameter portion 114A having an outer diameter D7 matching the shaft-side bolt through-hole 110 and a small-diameter portion 114B having an outer diameter D8 matching the wheel-side bolt through-hole 108. The jig side step portion 118 is provided by the
Is temporarily fixed to the crankshaft 12 by the jig-side step portion 118 of the stud jig 114, and the rotor shaft 34 is fixed to the bolt jig 1.
12 and the plate jig 116, the motor case 36
The rotor shaft 34 and the flywheel 70 are inserted into the shaft-side bolt through-hole 110 and the wheel-side bolt through-hole 108 and attached to the bolt fixing screw hole 106 serving as a crank-side bolt attachment portion. Are fixed to the crankshaft 12.

When assembling the generator 22 to the engine 2, the motor case 36 is fixed to the engine 2,
The flywheel 70 is temporarily fixed to the crankshaft 12, and the rotor shaft 34 is aligned with the stud jig 114 on one side so that the rotor shaft 34 can be fixed to the flywheel 70. The aligned rotor shaft 34 and flywheel 70 are cranked. The motor case 36 fixed to the shaft 12 with the shaft mounting bolt 104 on the other side and fixed to the engine 2
The transmission case 20 of the transmission 16 is fixed to the transmission 16.

Further, in order to fix the motor case 36 and the transmission case 20 to the engine 2, the engine 2 is provided with two first and second bolts as engine-side bolt mounting portions.
Block-side bolt screw holes 80-1 and 80-2 and two first and second lower-side bolt through holes 82-1 and 82-2 are formed, and the first and second block-side bolts are formed in the motor case 36. The first motor block side bolt through holes 84-1 and 84-2 in the axial direction corresponding to the screw holes 80-1 and 80-2 and the first and second lower side bolt through holes 82-1 and 82-2. And the first and second lower motor side bolt through holes 86-1 and 86-2.
The transmission case 20 is provided corresponding to the first and second motor block side bolt through holes 84-1 and 84-2 and the first and second lower motor side bolt through holes 86-1 and 86-2. First and second transmission side bolt through holes 8 in the axial direction
8-1, 88-2 and first and second transmission side bolt screw holes 90-1, 90-2 are formed. , Second
It is attached to the transmission side bolt screw holes 90-1 and 90-2, and the first motor block side bolt through holes 84-1 and 84-2 and the first and second lower motor side bolt through holes 86-1 and 86-2. The first and second blocks are inserted into the first and second block-side bolt screw holes 80-1 and 80-2 and attached to the first and second lower-side bolt through holes 82-1 and 82-2. Side stud bolts 76-1, 76-
2 and first and second lower stud bolts 78-1 and 78-
2 and the first and second block side stud bolts 76
-1, 76-2, when the motor case 36 and the transmission case 20 are fixed to the engine 2, the motor case 36
The first and second bolt-side stepped portions 96-1 and 96-2 having an outer diameter larger than other portions are provided in a portion in contact with the first portion, and the first and second motor block-side bolt through holes 84-1 of the motor case 36 are provided. , 84-2, corresponding to the first and second bolt side steps 96-1, 96-2 of the first and second block side stud bolts 76-1, 76-2, have an inner diameter larger than other portions. The first and second hole side step portions 98-1 and 98-2 are provided.

Further, the flywheel 70 is temporarily fixed to the crankshaft 12, and the rotor shaft 34 is fixed to the flywheel 70.
So that the rotor shaft 34 and the flywheel 70 aligned with each other can be fixed to the crankshaft 1.
2, a bolt fixing screw hole 106 serving as a crank side bolt mounting portion is provided on the end surface of the crankshaft 12, and a wheel side bolt corresponding to the bolt fixing screw hole 106 is provided on the flywheel 70. Through hole 10
8 and the rotor shaft 34 has a wheel-side bolt through hole 1
08, and a shaft-side bolt through-hole 110 having an inner diameter D6 larger than the wheel-side bolt through-hole 108 is provided. When the rotor shaft 34 and the flywheel 70 are assembled to the crankshaft 12, a bolt jig 112 and a stud jig 114 are provided.
The stud jig 114 has a large-diameter portion 114A having an outer diameter D7 that matches the shaft-side bolt through-hole 110 and a small-diameter portion 114B having an outer diameter D8 that matches the wheel-side bolt through-hole 108. Step 118
Is provided, and the flywheel 70 is temporarily fixed to the crankshaft 12 by the jig-side step portion 118 of the stud jig 114,
The rotor shaft 34 is connected to a bolt jig 112 and a plate jig 116.
, And inserted into the shaft-side bolt through-hole 110 and the wheel-side bolt through-hole 108 so as to be a bolt fixing screw hole 10 serving as a crank-side bolt mounting portion.
The rotor shaft 34 and the flywheel 70 are fixed to the crankshaft 12 by shaft mounting bolts 104 attached to the crankshaft 12.

FIG. 11 shows a special configuration of the present invention, and shows a second embodiment.

In the following embodiments, portions that perform the same functions as those of the above-described first embodiment will be described with the same reference numerals.

The features of the second embodiment are as follows. That is, the bolt screw hole 1 of the crankshaft 12
06, a crankshaft-side guide tapered hole 20 having a tapered inner peripheral surface 202 formed so as to widen toward the end surface side.
4 is provided. This crankshaft side guide tapered hole 204
Are formed, for example, two diagonally in the plurality of bolt screw holes 106 formed in the circumferential direction. Further, the flywheel 70 is provided with a wheel-side tapered protrusion 208 having a tapered outer peripheral surface 206 formed around the wheel-side bolt through-hole 108 and corresponding to the crankshaft-side guide tapered hole 204.

According to the structure of the second embodiment, when the flywheel 70 approaches the crankshaft 12 when the flywheel 70 is fixed to the crankshaft 12, first, the wheel-side tapered projection 208 is moved to the crankshaft side. The flywheel 70 is guided by the guide taper hole 204 and the crankshaft 1
2 and the taper projections 208 on the wheel side and the guide taper holes 204 on the crankshaft side are arranged diagonally, so that the flywheel 70 rotates smoothly and without rotating in the circumferential direction. 12 so that the fixing operation can be easily performed.

[0042]

As is apparent from the above detailed description, according to the present invention, the engine is provided with an engine-side bolt mounting portion, and the motor case is provided with a motor-side bolt penetrating axially corresponding to the engine-side bolt mounting portion. The transmission case is provided with a transmission-side bolt mounting section in the axial direction corresponding to the motor-side bolt through-hole. The engine-side bolt is mounted on this transmission-side bolt mounting section and inserted through the motor-side bolt through-hole. A stud bolt to be attached to the mounting portion is provided, and the stud bolt is provided with a bolt-side step portion having an outer diameter larger than other portions at a portion in contact with the motor case when the motor case and the transmission case are fixed to the engine. The bolt holes on the motor side of the case correspond to the bolt side steps of the stud bolts and A hybrid vehicle that uses the engine and transmission of an existing gasoline engine vehicle because the motor case and the transmission case are attached to the engine by stud bolts that penetrate the motor case by providing a hole-side step portion with a large inner diameter. The stud bolt is formed with a bolt-side step and the motor-side bolt through-hole of the motor case is formed with a hole-side step, so the bolt-side step and the hole-side step are formed. The motor case can be easily fixed to the engine even if there is a strong magnetic force when the motor rotor is inserted into the motor stator by abutting the parts.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an engine assembled with a motor case and a transmission case as viewed from above.

FIG. 2 is a cross-sectional view before a motor rotor is inserted into a motor case.

FIG. 3 is a sectional view after a motor rotor is inserted into a motor case.

FIG. 4 is an enlarged view of a main part of a step portion of the stud bolt of FIG. 1;

FIG. 5 is a side view of a part of the stud bolt of FIG. 4;

FIG. 6 is a cross-sectional view of a part of the motor case showing a through hole of the motor case of FIG. 4;

FIG. 7 is an enlarged view of a main part of each hole portion of FIG. 2;

FIG. 8 is a side view of a part of the stud jig of FIG. 7;

FIG. 9 is a cross-sectional view of an engine, a generator, a transmission, and a differential.

FIG. 10 is a schematic end view of a motor case.

FIG. 11 is a cross-sectional view of a main part of a fixed portion between a crankshaft and a flywheel in a second embodiment.

[Explanation of symbols]

 2 Engine 4 Cylinder block 8 Crank lower case 12 Crankshaft 20 Transmission case 22 Generator motor 24 Motor rotor 26 Motor stator 34 Rotor shaft 36 Motor case 70 Flywheel 76 Block side stud bolt 78 Lower side stud bolt 104 Shaft side mounting bolt 112 Bolt jig 114 Stud jig 116 Plate Jig

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F16B 5/02 F16B 9/02 H9 / 02 F16H 57/02 501Z F16H 57/02 501 B60K 9/00 D F-term (Reference) 3D039 AA01 AB26 AC65 AD22 AD53 3J001 FA15 HA10 JA08 KA19 KB01 3J023 AA01 BA01 BB01 CA00 3J063 AA01 AA04 AC03 BA01 CA01 CA10 CB42 CD44 CD45 CD53 XA03 XA05 XA11 5H115 PC06 PG04 PI13 PI21 PI21 PI21 PI21

Claims (5)

[Claims] An electric motor driven by electric energy and having a power generating function having a power generating function is directly connected to an engine driven by combustion of fuel. The power generating motor is fixed to a rotor shaft and a motor corresponding to the motor rotor is provided. A motor stator fixed to the case, and a motor-assisted mounting structure for a vehicle in which a transmission transmission case is mounted on the engine together with the motor case.
The engine is provided with an engine-side bolt mounting portion, the motor case is provided with a motor-side bolt through hole in an axial direction corresponding to the engine-side bolt mounting portion, and the transmission case is provided with a motor-side bolt through hole. A stud bolt is provided in the axial direction, and a stud bolt is attached to the transmission-side bolt attachment portion and is inserted into the motor-side bolt through hole and attached to the engine-side bolt attachment portion. In the portion of the motor case and the transmission case that is in contact with the motor case when the motor case and the transmission case are fixed to the engine, a bolt-side step portion having an outer diameter larger than other portions is provided, and the motor-side bolt through hole of the motor case is provided. Is larger than the other part corresponding to the bolt-side step part of the stud bolt. Motor assist mounting structure for a vehicle, characterized in that a hole-side step portion of such inner diameter. 2. An electric motor driven by electric energy and having a power generator having a power generating function is directly connected to an engine driven by fuel combustion. The generator is fixed to a rotor shaft and a motor corresponding to the motor rotor is provided. A motor-assisted mounting method for a vehicle, comprising a motor stator fixed to a case and a flywheel attached to the engine crankshaft together with the rotor shaft, wherein a crank-side bolt mounting portion is provided on an end surface of the crankshaft.
The flywheel is provided with a wheel-side bolt through-hole corresponding to the crank-side bolt mounting portion, and the rotor shaft has an inner diameter corresponding to the wheel-side bolt through-hole and larger than the wheel-side bolt through-hole. A shaft side bolt through hole is provided, and a bolt jig, a stud jig, and a plate jig are used at the time of assembling the rotor shaft and the flywheel to the crankshaft, and the stud jig has an outer diameter matching the shaft side bolt through hole. A jig-side step is provided by a large-diameter portion and a small-diameter portion matching the wheel-side bolt through-hole, the flywheel is temporarily fixed to the crankshaft by the jig-side step of the stud jig, and the rotor shaft is It is inserted into the motor case by the bolt jig and the plate jig. Vehicle motor assisted mounting method characterized by the said flywheel and said rotor shaft by shaft mounting bolt for mounting the crank-side bolt mounting portion fixed to the crank shaft is inserted into the Le-side bolt holes. 3. A motor driven by electric energy and directly connected to an engine driven by combustion of a fuel, the generator having a function of generating power, the generator being fixed to a rotor shaft and a motor corresponding to the motor rotor. A motor stator fixed to a case, wherein the flywheel is attached to the crankshaft of the engine together with the rotor shaft. Fixed to an engine, temporarily fixed the flywheel to the crankshaft, aligned the rotor shaft so that it can be fixed to the flywheel, and aligned the aligned rotor shaft and the flywheel with the crankshaft. To the engine fixed to the engine. A vehicle motor assist mounting method, wherein a transmission transmission case is fixed to a motor case. 4. An engine-side bolt mounting portion is provided on the engine for fixing the motor case and the transmission case to the engine, and the motor case is provided in an axial direction corresponding to the engine-side bolt mounting portion. The transmission case is provided with a motor-side bolt through-hole, and the transmission case is provided with a transmission-side bolt mounting portion in the axial direction corresponding to the motor-side bolt through-hole. A stud bolt is provided which is inserted into the hole and is attached to the engine-side bolt attachment portion. The stud bolt has a portion that comes into contact with the motor case when the motor case and the transmission case are fixed to the engine and is different from other portions. Also, a bolt-side step portion having a large outer diameter is provided, and the motor case 4. The motor assist for a vehicle according to claim 3, wherein a hole-side step portion having an inner diameter larger than other portions is provided in the bolt-side bolt through-hole corresponding to the bolt-side step portion of the stud bolt. Mounting method. 5. The flywheel is temporarily fixed to the crankshaft, the rotor shaft is aligned so as to be fixed to the flywheel, and the aligned rotor shaft and the flywheel are connected to the crankshaft. A crank-side bolt mounting portion provided on an end surface of the crankshaft, and a flywheel provided with a wheel-side bolt through-hole corresponding to the crank-side bolt mounting portion to fix the rotor to the rotor. A shaft is provided with a shaft-side bolt through-hole corresponding to the wheel-side bolt through-hole and having an inner diameter larger than the wheel-side bolt through-hole, and a bolt jig is used when assembling the rotor shaft and the flywheel to the crankshaft. , A stud jig, and a plate jig. The stud jig has a large outer diameter matching the shaft side bolt through hole. A jig-side step is provided by a diameter portion and a small-diameter portion matching the wheel-side bolt through-hole, the flywheel is temporarily fixed to the crankshaft by the jig-side step of the stud jig, and the rotor shaft is connected to the bolt jig. And the plate jig is inserted into the motor case, and is inserted into the shaft-side bolt through-hole and the wheel-side bolt through-hole to be attached to the crank-side bolt attaching portion. The method according to claim 3, wherein a flywheel and a flywheel are fixed to the crankshaft.