Vehicle drive systems

Abstract

To provide a vehicle drive system that can protect the signal wires connecting the motor and the terminal block, hold the signal wires without interfering with the motor's power line wiring work, and facilitate the routing of the signal wires. [Solution] Signal lines 77 and 78 connecting sensors 77F and 78F to terminal block 50, connectors 77G and 78G provided along the way, and a bracket 60 holding the signal lines 77 and 78 are provided inside case 3A. The signal lines 77 and 78 have cords 77B and 78B connecting the first connectors 77E and 78E of connectors 77G and 78G to sensors 77F and 78F, and harnesses 77A and 78A connecting the second connectors 77C and 78C of connectors 77G and 78G to terminal block 50. The bracket 60 is positioned to pass below the harnesses 77A and 78A and is fixed to case 3A, and the second connectors 77C and 78C are attached to it.

Description

Technical Field

[0001] The present invention relates to a vehicular drive apparatus. Background Art

[0002] The motor unit described in Patent Document 1 includes a wire harness led out from a temperature sensor that detects the temperature of a rotating electrical machine, and a cooling pipe that ejects oil. By fixing the relay connector of the wire harness to a bracket fitted into the cooling pipe, interference between the wire harness and other components is prevented. In Patent Document 1, the relay connector has a main body portion through which the wire harness passes, and a hook-shaped locking portion that is locked to the bracket, and is arranged at an intermediate position between the connection portion of the wire harness with the temperature sensor and the connection portion with the terminal block. Further, the bracket has a locking hole in which the locking portion of the relay connector is locked, and a hole that is fitted to the outer periphery of the cooling pipe. Prior Art Documents Patent Documents

[0003] Patent Document 1 Japanese Unexamined Patent Application Publication No. 2016-59131 Summary of Invention Problems to be Solved by the Invention

[0004] However, in the technology described in Patent Document 1, the routing position of the wire harness is restricted by the bracket at only one point, the intermediate connector. Therefore, the routing position of the wire harness cannot be sufficiently restricted, and the wire harness may not be protected from forces acting due to vibration, etc. Furthermore, since the bracket is fixed to a cooling pipe, the intermediate connector of the wire harness must be fixed to the bracket after the cooling pipe has been assembled to the case and the bracket has been fitted onto the cooling pipe, which may interfere with the wire harness routing work. In addition, since the intermediate connector is fixed to the bracket after the wire harnesses have been connected to each other with the intermediate connector, this may also interfere with the wire harness routing work.

[0005] Therefore, the present invention aims to provide a vehicle drive system that can protect the signal wires connecting the motor and the terminal block, hold the signal wires without interfering with the motor's power wire connection work, and facilitate the routing of the signal wires. [Means for solving the problem]

[0006] To solve the above problems, the present invention provides a vehicle drive device comprising: a case for housing a motor; a terminal block attached to the upper wall of the case for relaying electrical connections between the motor and the outside; and a plurality of three-phase wires provided below the terminal block inside the case for connecting one side of the terminal block to the motor, wherein a signal wire connecting a sensor provided on the motor to one side of the terminal block, a connector provided in the middle of the signal wire, and a bracket for holding the signal wire are provided inside the case, the connector consists of a first connector and a second connector that are connected to each other, the signal wire has a cord connecting the sensor and the first connector and a harness connecting the second connector and the terminal block, and the bracket is positioned to pass below the harness and fixed to the case, and the second connector is attached to the bracket. [Effects of the Invention]

[0007] Thus, according to the present invention, it is possible to provide a vehicle drive system that can protect the signal wires connecting the motor and the terminal block, hold the signal wires without interfering with the wiring work of the motor's power lines, and facilitate the wiring work of the signal wires. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a left side view of a vehicle drive system according to one embodiment of the present invention. [Figure 2] Figure 2 is a cross-sectional view of the vehicle drive system in Figure 1, taken along the II-II line. [Figure 3] Figure 3 is a perspective view of a wire harness and bracket attached to a vehicle drive system according to one embodiment of the present invention. [Figure 4] Figure 4 is a perspective view of a wire harness and bracket for a vehicle drive system according to one embodiment of the present invention. [Modes for carrying out the invention]

[0009] A vehicle drive device according to one embodiment of the present invention comprises a case for housing a motor, a terminal block mounted on the upper wall of the case for relaying electrical connections between the motor and the outside, and a plurality of three-phase wires provided below the terminal block inside the case for connecting one side of the terminal block to the motor. The vehicle drive device comprises a signal wire connecting a sensor provided on the motor to one side of the terminal block, a connector provided in the middle of the signal wire, and a bracket for holding the signal wire, all of which are provided inside the case. The connector consists of a first connector and a second connector that are connected to each other, and the signal wire has a cord connecting the sensor to the first connector and a harness connecting the second connector to the terminal block. The bracket is positioned to pass below the harness and is fixed to the case, and the second connector is attached to it. As a result, the vehicle drive device according to one embodiment of the present invention can protect the signal wire connecting the motor and the terminal block, hold the signal wire without interfering with the wiring work of the motor's power lines, and facilitate the wiring work of the signal wire. [Examples]

[0010] Hereinafter, a vehicle drive system according to one embodiment of the present invention will be described with reference to the drawings. Figures 1 to 4 are diagrams showing a vehicle drive system according to one embodiment of the present invention.

[0011] In Figures 1 to 4, the vertical, longitudinal, left-right, and right-right directions are based on the vehicle's drive system as it is positioned on the vehicle. The longitudinal direction of the vehicle is defined as the longitudinal direction, the left-right direction (vehicle width direction) as the left-right direction, and the vertical direction (vehicle height direction) as the vertical direction.

[0012] As shown in Figure 1, the drive unit 3 is located in an engine compartment (not shown) at the front of the vehicle (not shown). The drive unit 3 is connected to the left end of an engine (not shown). The engine is mounted transversely in the engine compartment so that the cylinder row direction is in the vehicle width direction. The drive unit 3 in this embodiment constitutes a vehicle drive unit.

[0013] The drive unit 3 comprises a case 3A as a housing. The case 3A houses a generator motor 21 that generates electricity from power input from the engine, a drive motor 23 that generates motor torque from the electricity generated by the generator motor 21, and a differential 16 that distributes the motor torque generated by the drive motor 23 to the left and right drive wheels (not shown) via left and right drive shafts. Thus, a vehicle equipped with the drive unit 3 consists of a so-called two-motor series hybrid vehicle.

[0014] The differential gear 16 is located at the lower rear of case 3A. Case 3A has a motor chamber 22 for housing the power generation motor 21 and a motor chamber 24 for housing the drive motor 23.

[0015] The motor chamber 24 is formed above the differential gear 16 at the rear of the case 3A. The motor chamber 22 is formed at the front of the case 3A, above the differential gear 16 and below the motor chamber 24 in the vertical direction.

[0016] As shown in Figure 2, case 3A consists of a cylindrical right case 4 connected to the left end of the engine, a cylindrical left case 5 connected to the left end of the right case 4, and a cover member 6 connected to the left end of the left case 5.

[0017] A flange portion 4A is formed at the left end of the right case 4, and a flange portion 5A is formed at the right end of the left case 5. The flange portion 4A of the right case 4 and the flange portion 5A of the left case 5 are connected by bolts.

[0018] A flange portion 5B is formed on the left end of the left case 5, and a flange portion 6A is formed on the right end of the cover member 6. The flange portion 5B of the left case 5 and the flange portion 6A of the cover member 6 are connected by bolts.

[0019] As shown in FIG. 1, the portions of the case 3A that form the motor chambers 22 and 24 bulge leftward. The motor chambers 22 and 24 are cylindrical spaces formed in the left case 5. The left end portions of the motor chambers 22 and 24 are closed by a cover member 6.

[0020] The left case 5 is formed with a partition portion (not shown), and this partition portion extends in the vertical direction so as to partition the interior of the case 3A into a space on the engine side and a space on the cover member 6 side. The space on the cover member 6 side relative to the partition portion of the left case 5 serves as the motor chambers 22 and 24.

[0021] In the left case 5 of the drive device 3, an input shaft (not shown), a motor shaft 11 which is the rotation shaft of the power generation motor 21, a motor shaft 12 which is the rotation shaft of the drive motor 23, an intermediate shaft (not shown), and the rotation axis center 15 of the differential device 16 are provided parallel to each other.

[0022] The power generation motor 21 is housed in the motor chamber 22 such that the axial direction of the motor shaft 11, which is its rotation center, is the vehicle left-right direction. The drive motor 23 is housed in the motor chamber 24 such that the axial direction of the motor shaft 12, which is its rotation center, is the vehicle left-right direction. Hereinafter, the axial direction of the motor shafts 11 and 12 is also simply referred to as the axial direction.

[0023] The rotation transmitted from the engine to the input shaft is transmitted to the power generation motor 21 after being shifted (speed-increased in this embodiment) by a gear pair (not shown). The rotation of the drive motor 23 is transmitted to the ring gear 14 after being shifted (speed-reduced in this embodiment) via the intermediate shaft.

[0024] The differential device 16 includes the ring gear 14, a pinion shaft (not shown), a pair of pinion gears (not shown) rotatably supported by the pinion shaft, and a pair of side gears (not shown) meshing with the pinion gears. The side gears are respectively connected to left and right drive shafts (not shown).

[0025] The differential gear 16 transmits the rotation transmitted from the drive motor 23 to the ring gear 14 via the intermediate shaft to the left and right drive wheels via the left and right drive shafts (not shown), while allowing differential rotation between the left and right drive wheels (not shown).

[0026] A terminal block 50 is provided on the upper wall of the left case 5 of case 3A, which relays the electrical connections between the power generation motor 21 and the drive motor 23 and the outside. External terminals 51A, 52A, 53A, 54A, 55A, and 56A are provided at the upper end of the terminal block 50, which are connected to external wiring (not shown).

[0027] As shown in Figure 2, the power generation motor 21 has a rotor (not shown) that rotates around the motor shaft 11 and a stator 21A provided on the outer circumference of the rotor. The stator 21A has a stator core (not shown) provided in the axial center and coil ends 21C provided at both ends in the axial direction.

[0028] The drive motor 23 has a rotor (not shown) that rotates around the motor shaft 12, and a stator 23A provided on the outer circumference of the rotor. The stator 23A has a stator core 23B provided in the axial center and coil ends 23C provided at both ends in the axial direction.

[0029] A rectangular opening (not shown) is formed in the upper wall of the left case 5 of case 3A. The terminal block 50 (see Figure 1) is inserted from above and fixed to the left case 5 so as to close this opening. In detail, as shown in Figure 1, the terminal block 50 is located in front of the motor room 24 and above the motor room 22. In other words, the terminal block 50 is located on the upper front of the left case 5.

[0030] The left case 5 of case 3A has a vertical wall 5J surrounding the terminal block 50. The upper end of the vertical wall 5J forms the edge of the opening. The vertical wall 5J is composed of a front wall 5D surrounding the terminal block 50 from the front, a rear wall 5E surrounding the terminal block 50 from the rear, and a side wall 5F surrounding the terminal block 50 from the right, and is formed in a U-shape that opens to the left. Therefore, the wiring and routing of electrical wiring to the terminal block 50 is performed from the left side with the cover member 6 removed from the left case 5.

[0031] The left case 5 of case 3A has a mounting boss portion 5K. The mounting boss portion 5K is formed on the left edge 5G of the front wall 5D of the vertical wall 5J and extends to the left from the edge 5G. A wall portion 5L is continuous with the edge 5G of the front wall 5D, and this wall portion 5L extends forward. The edge 5G is the portion where the front wall 5D and the wall portion 5L are continuous at a right angle and has sufficient strength to bear the load acting on the mounting boss portion 5K.

[0032] As shown in Figures 2 and 3, the area near the front upper end of the flange portion 5B of the left case 5 is widened forward and upward so that the lower part of the terminal block 50 can be viewed from the left, and electrical wiring connection work to the lower part of the terminal block 50 can be easily performed.

[0033] On the other hand, the parts of the left case 5 other than the flange portion 5B are not enlarged like the flange portion 5B because it is necessary to reduce the internal space. Therefore, a bulge portion 5M is formed on the right outer circumference of the flange portion 5B of the left case 5, which bulges inward into the internal space. The wall portion 5L, which is continuous with the edge 5G on which the mounting boss portion 5K is provided, constitutes the left side wall of the bulge portion 5M.

[0034] Below the terminal block 50 inside case 3A, several three-phase wires 71, 72, 73, 74, 75, and 76 are provided. The three-phase wires 71, 72, 73, 74, 75, and 76 connect one side of the terminal block 50 to the generator motor 21 and the drive motor 23.

[0035] Here, since high-voltage alternating current is applied to the three-phase wires 71, 72, 73, 74, 75, and 76, it is necessary to ensure sufficient insulation distance between the three-phase wires themselves and between them and other electrical wiring. The thicknesses of the three-phase wires 71, 72, 73, 74, 75, and 76 shown in Figure 2 represent the thickness including the insulation distance that must be ensured, and the actual thickness is thinner than this.

[0036] The three-phase wires 71, 72, and 73 extend from the coil end 21C of the stator 21A of the power generation motor 21. The three-phase wires 71, 72, and 73 are connected at circumferentially spaced positions on the outer circumference of the coil end 21C.

[0037] The three-phase wires 74, 75, and 76 extend from the coil end 23C of the stator 23A of the drive motor 23. The three-phase wires 74, 75, and 76 are connected at circumferentially spaced positions on the outer circumference of the coil end 23C.

[0038] On the lower left side of terminal block 50, there are several internal terminals 51B, 52B, 53B, 54B, 55B, and 56B. Internal terminals 51B, 52B, 53B, 54B, 55B, and 56B are connected to external terminals 51A, 52A, 53A, 54A, 55A, and 56A, respectively, inside terminal block 50. Three-phase wires 71, 72, and 73 are connected to internal terminals 51B, 52B, and 53B. Three-phase wires 74, 75, and 76 are connected to internal terminals 54B, 55B, and 56B.

[0039] As shown in Figure 3, the terminal block 50 has a flange portion 50A. The flange portion 50A is fixed to the upper wall of the left case 5 with bolts and covers the opening to prevent foreign matter from entering from the outside.

[0040] Sensors 77F and 78F for measuring temperature are provided at the coil ends 21C and 23C of the power generation motor 21 and the drive motor 23, respectively. Inside the case 3A, there is a signal line 77 connecting the sensor 77F on the power generation motor 21 to one side of the terminal block 50, a signal line 78 connecting the sensor 78F on the drive motor 23 to one side of the terminal block 50, and a bracket 60 for holding the signal lines 77 and 78.

[0041] A connector 77G is provided in the middle of signal line 77, which allows for the disconnection and connection of signal line 77. A connector 78G is provided in the middle of signal line 78, which allows for the disconnection and connection of signal line 78. Connectors 77G and 78G are held by bracket 60, and thus signal lines 77 and 78 are held by bracket 60. Signal lines 77 and 78, which transmit signals from sensors 77F and 78F, are connected to one lower side (left side) of terminal block 50.

[0042] More specifically, as shown in Figures 3 and 4, the terminal block 50-side ends of signal lines 77 and 78 are connected to a common coupler 79. This common coupler 79 is coupled to a connector (not shown) located near the front end of the left side of the lower part of the terminal block 50, thereby transmitting signals from sensors 77F and 78F to the terminal block 50 via signal lines 77 and 78.

[0043] Connectors 77G and 78G consist of first connectors 77E and 78E and second connectors 77C and 78C, which are connected to each other. The first connectors 77E and 78E are components on the sensor 77F and 78F side, while the second connectors 77C and 78C are components on the terminal block 50 side.

[0044] Signal lines 77 and 78 are configured to be separable at connectors 77G and 78G. Specifically, signal line 77 has a cord 77B that connects sensor 77F to the first connector 77E, and a harness 77A that connects the second connector 77C to the common coupler 79. Similarly, signal line 78 has a cord 78B that connects sensor 78F to the first connector 78E, and a harness 78A that connects the second connector 78C to the common coupler 79.

[0045] In other words, signal lines 77 and 78 are detachably connected to the codes 77B and 78B on the sensor 77F and 78F side and the harnesses 77A and 78A on the terminal block 50 side at connectors 77G and 78G located along them.

[0046] Bracket 60 is positioned to extend in the front-to-back direction and to pass beneath harnesses 77A and 78A, which extend in the left-to-right direction. It is fixed to case 3A in a position and orientation that restricts harnesses 77A and 78A from sagging downwards and supports them from below. Bracket 60 is made of a plate-like material and holds the second connectors 77C and 78C on the terminal block 50 side. Specifically, harnesses 77A and 78A extend upward from the second connectors 77C and 78C attached to bracket 60, pass over bracket 60, extend to the right, and reach a common coupler 79 connected to terminal block 50. Bracket 60 is positioned below harnesses 77A and 78A in a position that extends in the front-to-back direction, and its front end is fixed with bolts 65 to a part of left case 5 located in front of terminal block 50. In other words, the fixing point of the bracket 60 is the front upper corner of the left case 5, and is set in a position that does not interfere with other parts or wiring.

[0047] As shown in Figure 4, harnesses 77A and 78A pass over the bracket 60 and then split into front and rear sections, extending downward toward the generator motor 21 or the drive motor 23. Bracket 60 has an insertion piece 63 that extends forward and downward along the routing direction of harness 77A. Similarly, bracket 60 has an insertion piece 64 that extends rearward and downward along the routing direction of harness 78A. In detail, the lower edge of bracket 60 has insertion pieces 63 and 64 that widen front to back as they go downward. The second connectors 77C and 78C have insertion holes 77D and 78D formed along the routing direction of harnesses 77A and 78A, into which the insertion pieces 63 and 64 are inserted and locked. This locking mechanism holds the ends of harnesses 77A and 78A, which branch off from the common coupler 79, and allows the bracket 60 to be assembled with harnesses 77A and 78A, making assembly easier. Furthermore, since the second connectors 77C and 78C are held by the bracket 60, the connection work between the first connectors 77E and 78E, which are attached to the ends of the cords 77B and 78B extending from sensors 77F and 78F attached to coil ends 21C and 23C, and the second connectors 77C and 78C is made easier.

[0048] The connector pieces 63 and 64 are formed to split downwards into two branches above the axial ends of the three-phase wires 71, 72, 73, 74, 75, and 76, in order to avoid interference with the three-phase wires 71, 72, 73, 74, 75, and 76. By attaching the second connectors 77C and 78C to these connector pieces 63 and 64, the signal wires 77 and 78 can avoid interference with the three-phase wires 71, 72, 73, 74, 75, and 76, and an insulation distance from the three-phase wires 71, 72, 73, 74, 75, and 76 can be ensured. This is made even more reliable by passing the signal wires 77 and 78 above the bracket 60.

[0049] As shown in Figure 2, the bracket 60 is fastened in a cantilevered manner to the mounting boss portion 5K so that it protrudes rearward from its fixed position, facing the internal terminals 51B, 52B, 53B, 54B, 55B, and 56B, to which the terminal block 50 and the three-phase wires 71, 72, 73, 74, 75, and 76 are connected in the left-right direction.

[0050] As shown in Figure 3, the bracket 60 has a main body 61, which is fastened to the mounting boss 5K by bolts 65 and is composed of surfaces perpendicular to the left-right direction, and a bent portion 62 that bends from the upper edge of the main body 61 toward the terminal block 50. This bent portion 62 is formed over the entire length of the main body 61, which extends in the front-rear direction. In other words, the cross-sectional shape of the bracket 60 perpendicular to the front-rear direction is formed in an L shape. The front end of the main body 61 is fastened to the mounting boss 5K by bolts 65.

[0051] An engaging portion 62A is formed in the bent portion 62. The engaging portion 62A engages with the case 3A to restrict the rotation of the bracket 60 relative to the mounting boss portion 5K.

[0052] The engaging portion 62A consists of a slit formed by cutting out a part of the bent portion 62. A projection 5H that engages with the engaging portion 62A is formed near the mounting boss portion 5K in the case 3A.

[0053] Next, we will explain the wiring work for signal lines 77 and 78. The wiring work for signal lines 77 and 78 refers to the entire assembly work of signal lines 77 and 78 into case 3A, and includes the electrical connection work and the fixing work of signal lines 77 and 78.

[0054] First, at connectors 77G and 78G, the second connectors 77C and 78C and the first connectors 77E and 78E are separated, and the cords 77B and 78B and sensors 77F and 78F are attached to the generator motor 21 and the drive motor 23. It is assumed that the generator motor 21 and the drive motor 23 are already mounted in case 3A, and that the terminal block 50 and the multiple three-phase wires 71, 72, 73, 74, 75, and 76 have already been connected.

[0055] Next, the insertion pieces 63 and 64 of the bracket 60 are inserted into the insertion holes 77D and 78D of the second connectors 77C and 78C, thereby fixing the second connectors 77C and 78C to the bracket 60 and assembling the bracket 60 with the harnesses 77A and 78A.

[0056] Next, the common coupler 79 is inserted into the connector (not shown) of the terminal block 50 to connect them. At this time, the bracket 60 is not fixed to the case 3A, and because the bracket 60 is small in size, the bracket 60 can fit deep into the case 3A, allowing the common coupler 79 to be easily connected without being pulled by the harnesses 77A and 78A.

[0057] Next, the first connectors 77E and 78E are connected to the second connectors 77C and 78C, and the cords 77B and 78B are connected to the harnesses 77A and 78A. At this time, the bracket 60 is not fixed to the case 3A, so there is slack in the harnesses 77A and 78A and the cords 77B and 78B, making it easy to connect the connectors 77G and 78G.

[0058] Next, the bracket 60 is tightened and fixed to the case 3A with bolts 65 while engaging the engaging portion 62A, which is a slit for preventing rotation of the bracket 60, with the projection 5H of the case 3A, and aligning it with the mounting boss portion 5K.

[0059] The fixing points for the bracket 60 are provided at the ends of the bracket 60. When the bolts 65 are tightened, the harnesses 77A and 78A rise up so that they move away from the terminal block 50. The bracket 60 pulls the harnesses 77A and 78A upward in the direction that tensions them, and also supports the harnesses 77A and 78A between the bracket 60 and the terminal block 50.

[0060] As described above, in this embodiment, signal lines 77 and 78 connecting sensors 77F and 78F provided on the power generation motor 21 and drive motor 23 to one side of the terminal block 50, connectors 77G and 78G provided in the middle of the signal lines 77 and 78, and brackets 60 that hold the signal lines 77 and 78 are provided inside the case 3A. Connectors 77G and 78G consist of first connectors 77E and 78E and second connectors 77C and 78C which are connected to each other. Signal lines 77 and 78 have cords 77B and 78B which connect sensors 77F and 78F to the first connectors 77E and 78E, and harnesses 77A and 78A which connect the second connectors 77C and 78C to the terminal block 50. Bracket 60 is fixed to case 3A in a position and orientation that supports harnesses 77A and 78A from below, passing under the harnesses 77A and 78A, and holds the second connectors 77C and 78C.

[0061] As a result, the bracket 60 supports harnesses 77A and 78A from below and holds the harnesses 77A and 78A of signal wires 77 and 78 at the second connectors 77C and 78C. Therefore, the signal wires 77 and 78 can be supported at two points: the part that supports harnesses 77A and 78A and the part that holds the second connectors 77C and 78C. Consequently, the signal wires 77 and 78 can be supported without applying excessive force to them, improving their durability and thus protecting them.

[0062] Furthermore, since the signal lines 77 and 78 can be separated into cords 77B and 78B and harnesses 77A and 78A at connectors 77G and 78G along the way, the second connectors 77C and 78C connected to harnesses 77A and 78A can be held by the bracket 60, and after fixing the bracket 60 to the case 3A, the first connectors 77E and 78E connected to cords 77B and 78B can be connected to the second connectors 77C and 78C, thereby enabling the routing of signal lines 77 and 78 without hindrance. As a result, the signal lines 77 and 78 connecting the power generator motor 21 and the drive motor 23 to the terminal block 50 can be protected, the signal lines 77 and 78 can be held without interfering with the wiring work of the power lines of the power generator motor 21 and the drive motor 23, and the routing of signal lines 77 and 78 can be easily performed.

[0063] In this embodiment, the bracket 60 has insertion pieces 63 and 64 that extend along the routing direction of the harnesses 77A and 78A, and the second connectors 77C and 78C are formed along the routing direction of the harnesses 77A and 78A and have insertion holes 77D and 78D into which the insertion pieces 63 and 64 are inserted and locked.

[0064] In this configuration, for the second connectors 77C and 78C to detach from the insertion pieces 63 and 64 of the bracket 60, the second connectors 77C and 78C need to move in the direction that harnesses 77A and 78A extend. However, after assembly is complete, the movement of the second connectors 77C and 78C is prevented by the tension of harnesses 77A and 78A, thus preventing the second connectors 77C and 78C and harnesses 77A and 78A from falling off.

[0065] In this embodiment, the case 3A has a vertical wall 5J surrounding the terminal block 50 and a mounting boss portion 5K formed on the edge 5G of the vertical wall 5J. The bracket 60 is fastened in a cantilevered manner to the mounting boss portion 5K so as to protrude from the internal terminals 51B, 52B, 53B, 54B, 55B, and 56B to which the terminal block 50 and the three-phase wires 71, 72, 73, 74, 75, and 76 are connected.

[0066] As a result, after the connection work between terminal block 50 and the three-phase wires 71, 72, 73, 74, 75, and 76 is completed, the bracket 60 is positioned to protrude from the position opposite to the internal terminals 51B, 52B, 53B, 54B, 55B, and 56B to which the terminal block 50 and the three-phase wires 71, 72, 73, 74, 75, and 76 are connected, and from the position where the connection work between terminal block 50 and the three-phase wires 71, 72, 73, 74, 75, and 76 was performed. Therefore, the connection work between terminal block 50 and the three-phase wires 71, 72, 73, 74, 75, and 76 can be performed without any problems.

[0067] In this embodiment, the bracket 60 has a main body 61 fastened to the mounting boss 5K and a bent portion 62 that bends from the upper edge of the main body 61 toward the terminal block 50. The bent portion 62 has an engaging portion 62A that engages with the case 3A to restrict the rotation of the bracket 60 relative to the mounting boss 5K.

[0068] As a result, the engagement between the case 3A and the engaging portion 62A allows the bracket 60 to be fastened to the mounting boss portion 5K of the case 3A in a cantilevered position, preventing the bracket 60 from rotating relative to the mounting boss portion 5K and changing its orientation.

[0069] In this embodiment, the engaging portion 62A is made up of a slit formed by cutting out a part of the bent portion 62, and a projection 5H that engages with the engaging portion 62A is formed near the mounting boss portion 5K on the case 3A.

[0070] This simple structure, consisting of a notched structure in the bent portion of the bracket 60 and a protruding structure formed on the case 3A, makes it possible to prevent the bracket 60 from rotating (changing its posture).

[0071] While embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that modifications can be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims. [Explanation of symbols]

[0072] 3. Drive system (vehicle drive system) 3A Case 5G edge 5H protrusion 5J Vertical Wall 5K Mounting boss part 21. Motor for power generation (motor) 23. Drive motor (motor) 50 terminal block 51B,52B,53B,54B,55B,56B Internal terminal 60 bracket 61 Main body 62 Bending section 62A Engaging part 63, 64 Insertion piece 71,72,73,74,75,76 Three phase line 77, 78 signal lines 77A, 78A Harness 77B, 78B code 77C, 78C Second Connector 77D,78D insertion hole 77E, 78E First Connector 77F, 78F Sensor 77G, 78G connector

Claims

1. A case to house the motor, A terminal block is attached to the upper wall of the case and relays the electrical connection between the motor and the outside, A vehicle drive system comprising: a plurality of three-phase wires provided below the terminal block inside the case, connecting one side of the terminal block to the motor; A signal line connecting a sensor provided on the motor to one side of the terminal block, a connector provided in the middle of the signal line, and a bracket for holding the signal line are provided inside the case. The connector consists of a first connector and a second connector that are connected to each other. The signal line comprises a cord connecting the sensor and the first connector, and a harness connecting the second connector and the terminal block. The vehicle drive device is characterized in that the bracket is positioned to pass below the harness and fixed to the case, and the second connector is attached to it.

2. The bracket has an insert piece that extends along the routing direction of the harness, The vehicle drive device according to claim 1, characterized in that the second connector is formed along the routing direction of the harness and has an insertion hole into which the insertion piece is inserted and locked.

3. The case has vertical walls surrounding the terminal block and mounting bosses formed on the edges of the vertical walls, The vehicle drive device according to claim 1 or 2, characterized in that the bracket is fastened in a cantilevered manner to the mounting boss portion such that it protrudes at a position opposite to the internal terminal to which the terminal block and the three-phase wire are connected.

4. The bracket has a main body that is fastened to the mounting boss and a bent portion that bends from the upper edge of the main body toward the terminal block. The vehicle drive device according to claim 3, characterized in that an engaging portion is formed in the bent portion, which engages with the case to restrict the rotation of the bracket relative to the mounting boss portion.

5. The engagement portion consists of a slit formed by cutting out a part of the bent portion. The vehicle drive device according to claim 4, characterized in that a projection that engages with the engaging portion is formed near the mounting boss portion in the case.

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