WO2013061661A1

WO2013061661A1 - Connection structure for cable for vehicle

Info

Publication number: WO2013061661A1
Application number: PCT/JP2012/068556
Authority: WO
Inventors: 櫻田学
Original assignee: 本田技研工業株式会社
Priority date: 2011-10-25
Filing date: 2012-07-23
Publication date: 2013-05-02

Abstract

The present invention relates to a connection structure (10) for a cable for a vehicle. The connection structure (10) connects a first electric power cable section (32a) having a first flange section (104a), a second electric power cable section (32b) having a second flange section (104b), and a third electric power cable section (32c) having a third flange section (104c) to a dynamo-electric machine (26). The first to third flange sections (104a-104c) are arranged so that, with the first to third flange sections (104a-104c) mounted to the casing (34), the first flange section (104a) and the third flange section (104c) are substantially left-right symmetric and the second flange section (104b) lies along either the first flange section (104a) or the third flange section (104c).

Description

Vehicle cable connection structure

The present invention is directed to a vehicle for electrically connecting a rotating electrical machine mounted on a vehicle and independent first to third power cables connected to a control unit that supplies three-phase alternating current power to the rotating electrical machine. It relates to the cable connection structure.

JP-A-2009-137474 discloses a vehicle cable connection structure for connecting a positive first power cable and a negative second power cable connected to a motor PDU (power drive unit) to a contactor. Proposed.

In this connection structure, the first power cable is provided with a first flat plate terminal connected to one end thereof and a first bracket having a substantially triangular plate-like protrusion, and the second power cable is provided with the first power cable A second flat plate terminal connected to one end and a second bracket having a substantially triangular plate-like protrusion are provided.

Each of the first bracket and the second bracket is a first angle formed by the first flat plate terminal and the projection of the first bracket in a front view from the first flat plate terminal side of the first power cable. In a front view from the second flat plate terminal side of the second power cable, the second angle between the second flat plate terminal and the protrusion of the second bracket is set to a different value. It is non-rotatably fixed to each of the outer peripheral surface of the first power cable and the outer peripheral surface of the second power cable.

On the other hand, the contactor is provided in a housing formed with a first insertion port into which the first power cable can be inserted and a second insertion port into which the second power cable can be inserted, and the contactor is provided in the housing (1) an internal connection portion connectable to the flat plate terminal and the second flat plate terminal, a first external connection portion fixed to the outer wall of the housing and bolted with a projection of the first bracket, the housing And a second external connection portion fixed to the outer wall of the second bracket and the projection of the second bracket is bolted.
According to the connection structure configured as described above, it is possible to prevent the occurrence of erroneous assembly of the first power cable on the positive side and the second power cable on the negative side.

By the way, for example, a three-phase alternating current rotating electric machine may be mounted on the electric vehicle. In this case, in order to supply three-phase AC power to the rotating electrical machine, it is necessary to connect a PCU (power control unit) and the rotating electrical machine by an independent AC three-phase power cable. Specifically, it is necessary to electrically connect a phase power cable corresponding to each of the three-phase coils constituting the rotary electric machine.

However, since the three-phase power cable has substantially the same structure, so-called mis-assembly occurs in which the three-phase power cable is connected to coils of different (non-corresponding) phases. There is.

Here, since the vehicle cable connection structure described in JP-A-2009-137474 described above is for preventing the occurrence of erroneous assembly of a pair of DC (direct current) cables, a three-phase power cable It can not be applied as it is as a connection structure of Therefore, when connecting such a three-phase power cable to a rotating electrical machine, there is a need for a connection structure that can reliably prevent the occurrence of erroneous assembly.

The present invention has been made in consideration of such problems, and it is possible to make a rotating electric machine compact, and to reliably prevent the occurrence of erroneous assembly and reduce the number of connection steps. To provide a connection structure of

The vehicle cable connection structure according to the present invention comprises: a rotating electrical machine mounted on a vehicle; and independent first to third power cable portions connected to a control unit for supplying three-phase alternating current power to the rotating electrical machine. A connecting structure for electrically connecting a vehicle cable, wherein the rotating electric machine accommodates the rotating electric machine main body and the rotating electric machine main body, and the first to third power cable portions can be inserted therein. First to third insertion holes are arranged in a row in this order along the direction orthogonal to the axial direction of the rotating electrical machine main body, and the first to third power cable portions are disposed in the casing And a terminal connection member for electrically connecting the rotary electric machine main body, and the first power cable portion includes a first cable main body and a first flat plate terminal connectable to the terminal connection member. , The outer surface of the casing And a first bracket having a first flange portion which is attachable and which protrudes outward in the radial direction of the first cable main body, and the second power cable portion includes a second cable main body and the terminal connection member. The third power cable includes: a connectable second flat plate terminal; and a second bracket attachable to an outer surface of the casing and having a second flange portion protruding radially outward of the second cable main body. A third cable body, a third flat plate terminal connectable to the terminal connection member, and a third flange portion attachable to the outer surface of the casing and protruding outward in the radial direction of the third cable body Each of the first to third brackets has a flat surface of the first flat plate terminal and a projecting direction of the first flange portion in a front view from the first flat plate terminal side. The first angle on the acute angle side of the angle formed with the line segment extending along the flat surface of the second flat terminal and the projecting direction of the second flange in a front view from the second flat terminal side Of the flat surface of the third flat plate terminal and the third flange portion in a front view from the third flat plate terminal side, which is larger than the second angle on the acute angle side among the angles formed with the line segment extending along It is fixed to each of the first to third cable bodies such that the third angle on the acute angle side of the angles formed with the line segment extending along the projecting direction is larger than the second angle, When the first to third flange portions are attached to the casing, the first flange portion and the third flange portion are substantially symmetrical in the left-right direction, and the second flange portion is the first flange portion or the third flange portion. It is characterized in that it is disposed along the third flange portion. Ru.

According to the vehicle cable connection structure of the present invention, each of the first to third brackets is set to each of the first to third cable bodies such that the first angle and the third angle are larger than the second angle. While the first to third flanges are attached to the casing, the first flange and the third flange are substantially symmetrical in the left-right direction, and the second flange is the first flange. Part or along the third flange part.

Therefore, for example, the first flange portion may be attached to a predetermined attachment position of the casing in a state where the first power cable portion is inserted into the casing from the first insertion hole and the first flat plate terminal is connected to the terminal connection member. it can.

On the other hand, for example, when the second power cable portion is inserted into the casing from the first insertion hole, the second flange portion is separated from the predetermined attachment position of the casing in a state where the second flat plate terminal is connected to the terminal connection member. Therefore, the second flange portion can not be attached to the casing.

When the first power cable portion is inserted into the casing through the second insertion hole or the third insertion hole, and when the second power cable portion is inserted into the casing through the third insertion hole, the third power cable portion is inserted into the casing. The first to third flange portions can not be attached to the casing in the same manner even in the case of being inserted into the casing from the first insertion hole or the second insertion hole.

In this manner, the first power cable portion is inserted into the first insertion hole, the second power cable portion is inserted into the second insertion hole, and the third power cable portion is inserted into the third insertion hole. Since the first to third flange portions can be attached to a predetermined mounting position of the casing in a state where the third to third flat plate terminals are connected to the terminal connection member, occurrence of erroneous assembly of the first to third power cable portions It can be reliably stopped.

Further, since the first to third insertion holes are formed in a line along a direction orthogonal to the axial direction of the rotary electric machine main body, and all of the first to third angles are not right angles but acute angles, the first In the state where the first to third flange portions are attached to the casing, the projecting directions of the first to third flange portions can be easily made different from the radial direction of the rotary electric machine main body. Thus, the radial dimension of the rotary electric machine main body at a portion of the casing to which the first to third flange portions are attached can be reduced. Thus, the rotary electric machine can be made compact.

Furthermore, since the first to third insertion holes are formed in a line, the connection sites of the first to third flat plate terminals in the terminal connection member can be set at the same height position. This makes it easy to perform the connection work (assembly work) of the first to third flat plate terminals to the terminal connection member. Therefore, the number of connection steps of the first to third power cable portions can be reduced.

In the above-described vehicle cable connection structure, the casing has a first case for accommodating the rotating electric machine main body and a second case for accommodating the terminal connection member, and the first case and the second case are provided. A fastening member for fastening with the case is disposed between a flange portion different from the flange portion along which the second flange portion is along among the first flange portion and the third flange portion and the second flange portion. It may be done.

According to such a configuration, the fastening member for fastening the first case and the second case is a flange portion different from the flange portion along which the second flange portion is along the first flange portion and the third flange portion, and Since it arrange | positions between 2 flange parts, the dimension of the radial direction of the rotary electric machine main body in a casing can be made small. Thereby, the rotary electric machine can be made more compact.

In the above-described vehicle cable connection structure, the casing is formed in a substantially cylindrical shape, and the first to third insertion holes are formed in the upper portion of the casing, and the first to third insertions of the casing are formed. The wall in which the hole is formed may extend at an angle to the vertical.

According to such a configuration, the wall portion in which the first to third insertion holes are formed in the upper portion of the substantially cylindrically shaped casing extends obliquely with respect to the vertical line. The height dimension of the casing can be reduced as compared with the case where the wall extends in the vertical direction. Thereby, the rotary electric machine can be made more compact. Further, since each of the first to third power cable portions can be easily inserted into each of the first to third insertion holes, the number of connecting steps of the first to third power cable portions can be further reduced.

As described above, according to the present invention, the first power cable portion is inserted into the first insertion hole, the second power cable portion is inserted into the second insertion hole, and the third power cable portion is inserted into the third insertion hole. The first to third flange portions can be attached to the predetermined attachment positions of the casing in a state where the first to third flat plate terminals are connected to the terminal connection member only when inserted into the housing. It is possible to reliably prevent the occurrence of a cable assembly error.

Further, in a state where the first to third flanges are attached to the casing, the first flange and the third flange are substantially symmetrical in the left-right direction, and the second flange is the first flange or the third flange. Since it becomes along, the rotary electric machine can be configured compactly. Furthermore, by forming the first to third insertion holes in a row, the connection positions of each of the first to third flat plate terminals in the terminal connection member can be set to the same height position. 3) It is possible to reduce the number of connecting steps of the power cable section.

FIG. 1 is a schematic plan view of a vehicle incorporating a vehicle cable connection structure according to an embodiment of the present invention. It is a schematic left side view of the vehicle shown in FIG. It is a partially notched partially omitted sectional view of the rotary electric machine shown in FIG. It is an expanded sectional view of a terminal connection member shown in Drawing 3, and its circumference. It is a top view of the attaching part which comprises the right casing shown in FIG. It is principal part explanatory drawing of the said connection structure. FIG. 6 is an explanatory view of first to third brackets constituting the connection structure. FIG. 6 is a perspective view showing a state in which first to third flat plate terminals constituting the connection structure are attached to a bus bar. FIG. 6 is a perspective view showing a state in which the first to third flanges are attached to a cable holding member.

BEST MODES FOR CARRYING OUT THE INVENTION Preferred embodiments of a vehicle cable connection structure according to the present invention will be illustrated below and described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a cable connection structure 10 for a vehicle according to an embodiment of the present invention is incorporated in a vehicle 12. The vehicle 12 is configured as an electric vehicle, and includes a vehicle body 14, a pair of left and right

front wheels

16L and 16R, a pair of left and right

rear wheels

18L and 18R, and a battery 20 disposed under the floor under a seat (not shown). .

A rotating electric machine 26 and a PCU (power control unit, control unit) 28 are mounted in a space in front of the dashboard lower panel 22 constituting the vehicle 12, and the rotation of the rotating electric machine 26 is connected to the

front wheels

16L and 16R. It is transmitted to each of the

axles

30L and 30R.

The battery 20 and the PCU 28 mounted vertically above the rotating electric machine 26 are electrically connected by two DC power cables 30. The PCU 28 and the rotating electric machine 26 are AC three-phase first power cable sections (W-phase) It is electrically connected by 32a, the 2nd electric power cable part (V phase) 32b, and the 3rd electric power cable part (U phase) 32c. In the following description, the first to third

power cable portions

32a, 32b, 32c may be collectively referred to as a power cable portion 32.

During powering where the rotating electrical machine 26 functions as a motor, power is supplied from the battery 20 to the rotating electrical machine 26 through the power cable 30, PCU 28 and power cable portion 32, while during regeneration where the rotating electrical machine 26 functions as a generator, the rotating electrical machine The battery 20 is charged through the power cable portion 32, the PCU 28, and the power cable 30 from 26.

The PCU 28 comprises a controller having a microcomputer and an inverter controlled by the controller.

The connection structure 10 according to the present embodiment includes a rotating electrical machine 26 and first to third power cable portions 32 a to 32 c electrically connected to the rotating electrical machine 26.

As shown in FIG. 3, the rotary electric machine 26 has a casing 34 (see FIG. 2) formed in a substantially cylindrical shape, a rotary electric machine main body 36 housed in the casing 34, and terminals connected to the rotary electric machine main body 36 And a connection member (three-phase terminal block) 38.

The casing 34 has a left casing 40L for accommodating a gear mechanism (deceleration mechanism) (not shown) for transmitting the rotational drive force of the rotary electric machine main body 36 to the

axles

30L and 30R (see FIG. 1) And a right casing (second case) 40 R fastened by a plurality of bolts 43 on the right side of the central casing 42.
The left casing 40L is configured by fastening a pair of left and

right transmission cases

44, 46 with a plurality of bolts 48.

The right casing 40R is fastened to the right case main body 50 located on the central casing 42 side, the cable attachment portion 51 integrally provided on the upper portion of the right case main body 50, and the cable attachment portion 51 with a plurality of bolts 56. And a cover member 58.

The cable attachment portion 51 is in the vicinity of the first casing 52 projecting to the outside in the vehicle width direction (right side of the vehicle) from slightly above the center of the right case main body 50 in the height direction and the vicinity of the central casing 42 at the upper end of the right case main body 50 And a second wall 54 erected from the position of.
The second wall portion 54 extends at a predetermined angle to the side (vehicle right side) opposite to the side where the central casing 42 is located with respect to the vertical line (see FIGS. 3 and 4).

As a result, the height dimension of the cable attachment portion 51 can be reduced as compared with the case where the second wall portion 54 is vertically erected from the upper end portion of the right case main body 50. Thereby, the rotary electric machine 26 can be made compact.

As shown in FIG. 5, in the second wall 54, a first insertion hole 60a (see FIG. 4) into which the first power cable portion 32a can be inserted and a second insertion into which the second power cable portion 32b can be inserted The hole 60b and the third insertion hole 60c into which the third power cable portion 32c can be inserted are formed in a line in this order (along the longitudinal direction of the vehicle) in a direction perpendicular to the axis of the rotary electric machine 26.

Further, a cable holding member 62 for holding the power cable portion 32 is attached to the second wall portion 54. The cable holding member 62 is formed of an elastic member, and includes a first ring portion 64a (see FIG. 4) fitted in the first insertion hole 60a and a second ring portion 64b fitted in the second insertion hole 60b. And a third ring portion 64c fitted in the third insertion hole 60c.

In the present embodiment, the first to third ring portions 64a to 64c are integrally formed to be one member. However, the first to third ring portions 64a to 64c may be separately formed. In addition, the cable holding member 62 includes a first projection 66a projecting radially outward from the first ring portion 64a, a second projection 66b projecting radially outward from the second ring portion 64b, and a third projection 66a. And a third projection 66c protruding radially outward from the ring portion 64c.

As understood from FIG. 5, the first protrusion 66 a protrudes toward the vehicle front side, whereas the second protrusion 66 b and the third protrusion 66 c protrude toward the vehicle rear side. Each of the first to third protrusions 66a to 66c is formed in a substantially triangular shape in a plan view. In the vicinity of the tip of each of the first to third protrusions 66a to 66c, a hole 68 through which a bolt 106 described later can be inserted is formed.

In FIG. 5, in the cable holding member 62, an imaginary reference line L0 passing through the centers of the first to third insertion holes 60a to 60c is set, and the center of the first insertion hole 60a and the first protrusion 66a are set. A virtual line segment L1 passing through the center of the hole 68, a virtual line segment L2 passing through the center of the second insertion hole 60b and the center of the hole 68 of the second protrusion 66b, and the center and third line of the third insertion hole 60c An imaginary line segment L3 passing through the center of the hole 68 of the projection 66c is set.

That is, the virtual line segment L1 extends along the protruding direction of the first protrusion 66a with respect to the first ring portion 64a, and the virtual line segment L2 extends in the protruding direction of the second protrusion 66b with respect to the second ring portion 64b. The virtual line segment L3 extends along the protruding direction of the third protrusion 66c with respect to the third ring 64c.

The first angle α1 on the acute angle side of the angles formed by the virtual reference line L0 and the virtual segment L1 is set larger than the second angle α2 on the acute angle side of the angles formed by the virtual reference line L0 and the virtual segment L2 Among the angles formed by the virtual reference line L0 and the virtual line segment L3, the third angle α3 on the acute angle side is set larger than the second angle α2.

In the present embodiment, the first angle α1 and the third angle α3 are set to the same size. Therefore, the first projection 66a and the third projection 66c are disposed symmetrically (symmetrically in the vehicle longitudinal direction), and the second projection 66b is disposed along the third projection 66c. However, the first angle α1 and the third angle α3 may not have the same size as long as they are acute angles larger than the second angle α2. That is, the first protrusion 66a and the third protrusion 66c may be substantially symmetrical in the left-right direction.

As described above, by making all of the first to third angles α1 to α3 not acute angles but acute angles, the projecting directions of the first to third protrusions 66a to 66c and the radial direction of the rotary electric machine main body 36 are made different. be able to. Thereby, the dimension of the cable attachment portion 51 in the radial direction of the rotary electric machine main body 36 can be reduced. Thus, the casing 34 (the rotary electric machine 26) can be made compact.

Further, since an appropriate gap is formed between the first projection 66a and the second projection 66b, a bolt (fastening member) 70 for fastening the right case main body 50 and the central casing 42 is formed in the gap. It can be arranged. Thus, the interference between the cable holding member 62 and the bolt 70 can be avoided without increasing the height dimension of the casing 34, so that the casing 34 (the rotating electrical machine 26) can be made more compact.

The first to third angles α1 to α3 can be set to arbitrary values. For example, it is preferable to set the first angle α1 and the third angle α3 to 60 degrees and set the second angle α2 to 45 degrees. . In this case, a gap for disposing the bolt 70 can be formed with certainty.

On the outer surface of the second wall portion 54, characters for preventing erroneous assembly are displayed. Specifically, in the vicinity of the first ring portion 64a, the letter "W" indicating that it is the first insertion hole 60a for the W-phase first power cable portion 32a is displayed, and the second ring portion 64b is displayed. The letter "V" is displayed in the vicinity of the second insertion hole 60b for the V-phase second power cable portion 32b, and the U-phase third phase is displayed in the vicinity of the third ring portion 64c. A letter “U” is displayed indicating that it is the third insertion hole 60c for the power cable portion 32c.

Thus, by displaying the letters U, V, W on the outer surface of the second wall 54, the occurrence of erroneous assembly of the first to third power cable portions 32a to 32c can be prevented as much as possible. It is possible.

As shown in FIG. 3, the rotary electric machine main body 36 is disposed in the central casing 42, and a stator 74 on which three-phase coils (insulation coated conductors) 72a to 72c are wound and a permanent magnet are fixed. And a rotor 76. As shown in FIG. 4, each of terminals 78a to 78c is adhered (crimped) to the end of each of coil (W phase) 72a, coil (V phase) 72b, and coil (U phase) 72c. .

The terminal connection member 38 is fastened to the first wall 52 by bolts 84 with three metal terminal blocks 82a to 82c to which the terminals 78a to 78c of the coils 72a to 72c of each phase are fastened by bolts 80 respectively. The first support member 86 for supporting the terminal blocks 82a to 82c in a fixed state, and three metal bus bars 88a to 88c whose one end is fastened to each of the terminal blocks 82a to 82c by bolts 87 (see FIG. 8) and a second support member 92 for supporting the other end of each of the bus bars 88a to 88c in a state of being fastened to the right case main body 50 by a bolt 90.

The first support member 86 and the second support member 92 are made of an insulating material such as resin. In the second support member 92, a nut 94 is embedded corresponding to the other end of each of the bus bars 88a to 88c. As can be understood from FIG. 8, portions (three nuts 94) of the second support member 92 which the other ends of the bus bars 88a to 88c contact with each other are in a direction orthogonal to the axis of the rotary electric machine main body 36 ) And arranged at the same height position.

In each nut 94, a bolt 95 for co-clamping each of the first to third power cable portions 32a to 32c with the other end of the bus bars 88a to 88c connected to the coils 72a to 72c of the corresponding phase Screwing is possible.

As shown in FIGS. 6 and 7, the first power cable portion 32a includes a first cable body 96a, a first flat plate terminal 98a fixed (crimped) to the end thereof, and a first protrusion of the cable holding member 62. A first bracket 100a connected to the portion 66a is provided. The first bracket 100a is an annular first fixing portion 102a fixed non-rotatably to the outer peripheral surface of the first cable main body 96a, and substantially protrudes outward in the radial direction of the first cable main body 96a from the first fixing portion 102a. And a triangular plate-shaped first flange portion 104a.

Similarly, the second power cable portion 32b has a second cable body 96b, a second flat plate terminal 98b, and a second bracket 100b, and the third power cable portion 32c has a third cable body 96c, a third cable body It has a flat plate terminal 98c and a third bracket 100c.

The second cable body 96b and the third cable body 96c have the same configuration as the first cable body 96a, and the second flat terminal 98b and the third flat terminal 98c have the same configuration as the first flat terminal 98a. The second bracket 100b and the third bracket 100c have the same configuration as the first bracket 100a. That is, the second bracket 100b includes the second fixing portion 102b and the second flange portion 104b, and the third bracket 100c includes the third fixing portion 102c and the third flange portion 104c.

As understood from FIG. 7, the first flange portion 104a protrudes to one side with respect to a perpendicular passing through the center of the flat surface of the first flat plate terminal 98a in a front view from the first flat plate terminal 98a side, The second flange portion 104b protrudes to the other side with respect to a vertical line passing through the center of the flat surface of the second flat plate terminal 98b in a front view from the second flat plate terminal 98b side, and the third flange portion 104c is a third It protrudes to the other side with respect to the perpendicular passing through the center of the flat surface of the third flat plate terminal 98c in a front view from the flat plate terminal 98c side.

Further, a hole 108 through which a bolt 106 is inserted is formed in the vicinity of the tip of each of the first to third flange portions 104a to 104c (see FIG. 6). The bolt 106 is inserted through the holes 108 of the first to third flanges 104 a to 104 c and the holes 68 of the first to third protrusions 66 a to 66 c constituting the cable holding member 62 to form the second wall 54. Can be concluded.

In FIG. 7, in the first power cable portion 32a, an imaginary line segment L4 passing through the center of the first cable main body 96a and the center of the hole 108 of the first flange portion 104a in a front view from the first flat plate terminal 98a side In the second power cable portion 32b, an imaginary line segment L5 passing through the center of the second cable main body 96b and the center of the hole 108 of the second flange portion 104b is set in a front view from the second flat plate terminal 98b side. In the third power cable portion 32c, a virtual line segment L6 passing through the center of the third cable main body 96c and the center of the hole 108 of the third flange portion 104c is set in a front view from the third flat plate terminal 98c side Ru.

That is, the virtual line segment L4 extends along the protruding direction of the first flange portion 104a, the virtual line segment L5 extends along the protruding direction of the second flange portion 104b, and the virtual line segment L6 extends It extends along the protruding direction of the third flange portion 104c.

The first angle β1 on the acute angle side of the angle formed by the flat surface of the first flat plate terminal 98a and the imaginary line segment L4 is the acute angle side of the angle formed by the flat plane of the second plate terminal 98b and the imaginary line segment L5. The third angle β3 on the acute angle side of the angle formed by the flat surface of the third flat plate terminal 98c and the imaginary line segment L6 is set to be larger than the second angle β2, and is set to be larger than the second angle β2. .

In the present embodiment, the first angle β1 and the third angle β3 are set to the same size. However, the first angle β1 and the third angle β3 may not have the same size as long as they are larger than the second angle β2.

Specifically, the first angle β1 and the third angle β3 are equal to the first angle α1 and the third angle α3 set in the cable holding member 62 described above, and the second angle β2 is set in the cable holding member 62 Equal to the second angle .alpha.

Next, the procedure for electrically connecting each of the first to third power cable portions 32a to 32c to the corresponding phase coils 72a to 72c in the connection structure 10 configured as described above will be described.

First, with the cover member 58 removed from the cable attachment portion 51, the W-phase coil 72a is fastened to the terminal block 82a, the V-phase coil 72b is fastened to the terminal block 82b, and the U-phase coil 72c is terminal block Signed to 82c. Then, one end of each of bus bars 88a to 88c is fastened to each of these terminal blocks 82a to 82c. Thereby, coil 72a and bus bar 88a are electrically connected, coil 72b and bus bar 88b are electrically connected, and coil 72c and bus bar 88c are electrically connected.

Next, a connection process of the W-phase first power cable portion 32a is performed. Specifically, one end side of the first cable main body 96a constituting the first power cable portion 32a is inserted into the first insertion hole 60a, and the first flat plate terminal 98a is positioned on the upper surface of the other end of the bus bar 88a. (See Figure 8). Then, in this state, the first flat plate terminal 98 a and the bus bar 88 a are tightened together with the bolt 95.

At this time, the first flange portion 104 a constituting the first power cable portion 32 a is positioned on the first projection 66 a of the cable holding member 62. In other words, the position of the hole 108 of the first flange portion 104a coincides with the position of the hole 68 of the first protrusion 66a. Subsequently, the bolt 106 is inserted into the hole 108 and the hole 68, and is fastened to the second wall portion 54 constituting the cable attachment portion 51 (see FIG. 9). As a result, the W-phase first power cable portion 32a is electrically connected to the W-phase coil 72a and is firmly held by the casing 34.

Thereafter, the step of connecting the V-phase second power cable portion 32b and the step of connecting the U-phase third power cable portion 32c are sequentially performed in the same procedure as the step of connecting the first power cable portion 32a described above.

That is, in the connection process of the second power cable portion 32b, one end side of the second cable main body 96b is inserted into the second insertion hole 60b and the second flat plate terminal 98b and the bus bar 88b are fastened together by the bolt 95. The bolt 106 is inserted into the hole 108 of the second flange portion 104 b and the hole 68 of the second protrusion 66 b and fastened to the second wall portion 54. As a result, the V-phase second power cable portion 32 b is electrically connected to the V-phase coil 72 b and is firmly held by the casing 34.

Further, in the connection step of the third power cable portion 32c, one end side of the third cable main body 96c is inserted into the third insertion hole 60c and the third flat terminal 98c and the bus bar 88c are fastened together by the bolt 95. The bolt 106 is inserted into the hole 108 of the third flange portion 104c and the hole 68 of the third protrusion 66c and fastened to the second wall portion 54. As a result, the U-phase third power cable portion 32 c is electrically connected to the U-phase coil 72 c and is firmly held to the casing 34.

Thereafter, by fastening the cover member 58 to the cable attachment portion 51, the connection work of the present embodiment is completed.

By the way, in the connection process of the first to third power cable portions 32a to 32c described above, it may be considered that the connection procedure is incorrect. For example, it is conceivable to insert the second cable main body 96b constituting the second power cable portion 32b into the first insertion hole 60a.

However, according to the connection structure 10 of the present embodiment, each of the first to third brackets 100a to 100c is set such that the first angle β1 is larger than the second angle β2 and equal to the third angle β3. The first to third cable main bodies 96a to 96c are fixed, and the first to third flanges 104a to 104c are fastened to the second wall 54 of the cable attachment portion 51 with the bolts 106, respectively. The flange portion 104a and the third flange portion 104c are laterally symmetrical, and the second flange portion 104b is arranged along the third flange portion 104c.

Therefore, with the second cable main body 96b inserted into the first insertion hole 60a and the second flat plate terminal 98b positioned on the upper surface of the other end of the bus bar 88a, the second flange portion 104b deviates from the first projection 66a. It will (separate). That is, the position of the hole 108 of the second flange portion 104b does not coincide with the position of the hole 68 of the first protrusion 66a. Therefore, the second flange portion 104 b can not be fastened to the second wall portion 54 of the cable attachment portion 51 by the bolt 106. Therefore, the V-phase second power cable portion 32b is not electrically connected to the W-phase coil 72a.

When one end side of the first cable main body 96a constituting the first power cable portion 32a is inserted into the second insertion hole 60b or the third insertion hole 60c, the second cable main body 96b constituting the second power cable portion 32b Similarly, when the third cable main body 96c constituting the third power cable portion 32c is inserted into the first insertion hole 60a or the second insertion hole 60b when the one end side of the third power cable portion 32c is inserted into the third insertion hole 60c. The first to third flanges 104a to 104c can not be fastened to the second wall 54.

As described above, since the first to third power cable portions 32a to 32c can be connected only to the coils 72a to 72c of the corresponding phases, the first to third power cable portions 32a to 32c can be connected. It is possible to reliably prevent the occurrence of erroneous assembly.

According to the present embodiment, since the first to third insertion holes 60a to 60c are formed in a line so as to be at the same height position, the bus bar 88a of the second support member 92 constituting the terminal connection member 38. The portions (positions where the first to third flat plate terminals 98a to 98c are connected) where the portions to 88c are installed can be set to the same height. As a result, it becomes easy to fasten the first to third flat plate terminals 98a to 98c to the bus bars 88a to 88c. Therefore, the number of connection steps of the first to third power cable portions 32a to 32c can be reduced.

According to the present embodiment, since the second wall portion 54 in which the first to third insertion holes 60a to 60c are formed extends at an angle to the vertical line, the first to third cable main bodies 96a are formed. One end side of each of the through holes 96c can be easily inserted into each of the first through third insertion holes 60a through 60c. Thereby, the number of connection steps of the first to third power cable portions 32a to 32c can be further reduced.

The present embodiment is not limited to the configuration described above. For example, in a front view from the second flat plate terminal 98b side, the second power cable portion 32b has one side with respect to a vertical line through which the second flange portion 104b passes through the center of the flat surface of the second flat plate terminal 98b (FIG. 7). May be configured to protrude on the right side of That is, the second power cable portion 32b may be fixed to the second cable main body 96b so that the second bracket is symmetrical in left and right as compared with the form shown in FIG.

In this case, the second projection 66b that constitutes the cable holding member 62 protrudes to the vehicle rear side (left side in FIG. 5). That is, the cable holding member 62 is configured such that the second projection 66b is symmetrical in the left-right direction as compared with the embodiment shown in FIG. As a result, an appropriate gap is formed between the second projection 66b and the third projection 66c, so a bolt 70 for fastening the right casing 40R and the central casing 42 is disposed in the gap. can do.

According to such a modification, each of the first to third flange portions 104a to 104c of the first to third power cable portions 32a to 32c is attached to each of the first to third protrusions 66a to 66c. Thus, the first flange portion 104a and the third flange portion 104c are laterally symmetrical, and the second flange portion 104b is disposed along the first flange portion 104a. Even if it is such a modification, the same effect as the embodiment mentioned above can be produced.
[Summary of the embodiment]

The connection structure 10 for a vehicle cable according to the above-described embodiment is independent of the rotating electric machine 26 mounted on the vehicle 12 and the PCU (control unit) 28 supplying three-phase AC power to the rotating electric machine 26. In the connection structure 10 for electrically connecting the first to third power cable portions 32a to 32c, the rotary electric machine 26 accommodates a rotary electric machine main body 36 and the rotary electric machine main body 36, and A casing 34 in which first to third insertion holes 60a to 60c into which the first to third power cable portions 32a to 32c can be inserted are formed in a row in this order along a direction orthogonal to the axial direction of the rotary electric machine main body 36 And a terminal connection member 38 disposed in the casing 34 to electrically connect the first to third power cable portions 32a to 32c and the rotary electric machine main body 36.

The first power cable portion 32a is attachable to the first cable main body 96a, the first flat plate terminal 98a connectable to the terminal connection member 38, and the outer surface of the casing 34, and the first power main body 96a And a first bracket 100a having a first flange portion 104a protruding radially outward.

The second power cable portion 32b is attachable to the second cable main body 96b, the second flat plate terminal 98b connectable to the terminal connection member 38, and the outer surface of the casing 34, and the second power main body 96b And a second bracket 100b having a second flange portion 104b protruding radially outward.

The third power cable portion 32c is attachable to the third cable main body 96c, the third flat plate terminal 98c connectable to the terminal connection member 38, and the outer surface of the casing 34, and the third power main body 96c And a third bracket 100c having a third flange portion 104c projecting radially outward.

Each of the first to third brackets 100a to 100c extends along the flat surface of the first flat terminal 98a and the projecting direction of the first flange portion 104a in a front view from the first flat terminal 98a side. The first angle β1 on the acute angle side of the angles with the line segment is the flat surface of the second flat terminal 98b and the projecting direction of the second flange portion 104b in a front view from the second flat terminal 98b side And the second flat surface 98c of the third flat plate terminal 98c in a front view from the third flat plate terminal 98c side, which is larger than the second angle .beta.2 on the acute angle side among the angles formed by the line segment extending along The first to third cable main bodies 96a to 96c are arranged such that the third angle β3 on the acute angle side of the angles formed by the line segments extending along the projecting direction of the third flange portion 104c is larger than the second angle β2. Fixed to each of .

The first to third flanges 104a to 104c, when attached to the casing 34, make the first flange portion 104a and the third flange portion 104c substantially symmetrical in the left-right direction, and the second flange portion 104b is disposed along the first flange portion 104a or the third flange portion 104c.

According to this connection structure 10, each of the first to third brackets 100a to 100c is controlled by the first to third cable bodies 96a to 96c so that the first angle β1 and the third angle β3 become larger than the second angle β2. The first flange portion 104a and the third flange portion 104c are substantially symmetrical in the left-right direction with the first to third flange portions 104a to 104c attached to the casing 34 while being fixed to each of the 96c. The second flange portion 104b may be along the first flange portion 104a or the third flange portion 104c.

Therefore, for example, while the first power cable portion 32a is inserted into the casing 34 from the first insertion hole 60a, the first flat plate terminal 98a is connected to the terminal connection member 38 and the first flange portion 104a is fixed to the casing 34. Can be mounted at the mounting position (first projection 66a) of

On the other hand, for example, when the second power cable portion 32b is inserted into the casing 34 from the first insertion hole 60a, the second flange portion 104b is the above-mentioned one of the casing 34 with the second flat terminal 98b connected to the terminal connection member 38. The second flange portion 104 b can not be attached to the casing 34 because the second flange portion 104 b is separated from the predetermined attachment position (first projection 66 a).

When the first power cable portion 32a is inserted into the casing 34 through the second insertion hole 60b or the third insertion hole 60c, the second power cable portion 32b is inserted into the casing 34 through the third insertion hole 60c. Similarly, in the case where the third power cable portion 32c is inserted into the casing 34 through the first insertion hole 60a or the second insertion hole 60b, each of the first to third flange portions 104a to 104c is used as the casing 34 (first to third It can not be attached to each of the three projections 66a to 66c).

Thus, the first power cable portion 32a is inserted into the first insertion hole 60a, the second power cable portion 32b is inserted into the second insertion hole 60b, and the third power cable portion 32c is inserted into the third insertion hole 60c. Only in the case where the first to third flat plate terminals 98a to 98c are connected to the terminal connection member 38, the first to third flange portions 104a As it can be attached to the sections 66a to 66c), the occurrence of erroneous assembly of the first to third power cable sections 32a to 32c can be reliably prevented.

Further, since all of the first to third angles β1 to β3 are not right angles but acute angles, the first to third flanges 104a to 104c are attached to the casing 34. It is possible to easily make the protruding direction of 104a to 104c different from the radial direction of the rotary electric machine main body 36. This makes it possible to reduce the radial dimension of the rotary electric machine main body 36 in the portion (second wall portion 54) of the casing 34 to which the first to third flange portions 104a to 104c are attached. Therefore, the rotary electric machine 26 can be made compact.

Furthermore, since the first to third insertion holes 60a to 60c are formed in a line, the connection sites of the first to third flat terminals 98a to 98c in the terminal connection member 38 are set at the same height position. be able to. As a result, the connection work (assembly work) of the first to third flat plate terminals 98a to 98c to the terminal connection member 38 is facilitated. Therefore, the number of connection steps of the first to third power cable portions 32a to 32c can be reduced.

In the connection structure 10, the casing 34 has a central casing (first case) 42 for housing the rotary electric machine main body 36 and a right casing (second case) 40R for housing the terminal connection member 38. A bolt (fastening member) 70 for fastening the central casing 42 and the right casing 40R is a flange portion 104c along which the second flange portion 104b of the first flange portion 104a and the third flange portion 104c follows. It may be disposed between the flange portion 104a (104c) different from (104a) and the second flange portion 104b.

According to such a connection structure 10, the bolt 70 for fastening the central casing 42 and the right casing 40R is a flange portion 104c (104a) along the second flange portion 104b of the first flange portion 104a and the third flange portion 104c. Is arranged between the flange portion 104a (104c) and the second flange portion 104b different from the above, so that the radial dimension (height dimension) of the rotary electric machine main body 36 in the casing 34 can be reduced. it can. As a result, the rotary electric machine 26 can be made more compact.

In the connection structure 10, the casing 34 is formed in a substantially cylindrical shape, and the first to third insertion holes 60a to 60c are formed in the upper portion of the casing 34. The second wall 54 in which the three insertion holes 60a to 60c are formed may extend obliquely with respect to the vertical line.

According to such a connection structure 10, the second wall 54 in which the first to third insertion holes 60a to 60c are formed in the upper portion of the substantially cylindrical casing 34 is inclined relative to the vertical line. Since the second wall 54 extends vertically, the height dimension of the casing 34 can be reduced as compared with the case where the second wall 54 extends in the vertical direction. Thus, the rotary electric machine 26 can be made more compact. In addition, since each of the first to third power cable portions 32a to 32c can be easily inserted into each of the first to third insertion holes 60a to 60c, the number of connection steps of the first to third power cable portions 32a to 32c can be reduced. It can be further reduced.

The present invention is not limited to the above-described embodiment, and it goes without saying that various configurations can be adopted without departing from the scope of the present invention.

Claims

Independent first to third power cable portions (32a) connected to a rotating electric machine (26) mounted on a vehicle (12) and a control unit (28) for supplying three-phase AC power to the rotating electric machine (26) A vehicle cable connection structure (10) for electrically connecting
The rotating electric machine (26) comprises a rotating electric machine main body (36);
First to third insertion holes (60a to 60c) for accommodating the rotating electric machine main body (36) and into which the first to third power cable portions (32a to 32c) can be inserted are the rotating electric machine main body (36) A casing (34) formed in a row in this order along a direction perpendicular to the axial direction of the
A terminal connection member (38) disposed in the casing (34) for electrically connecting the first to third power cable portions (32a to 32c) and the rotary electric machine main body (36); Have
The first power cable portion (32a) can be attached to the first cable body (96a), the first flat plate terminal (98a) connectable to the terminal connection member (38), and the outer surface of the casing (34) A first bracket (100a) having a first flange portion (104a) projecting radially outward of the first cable body (96a);
The second power cable portion (32b) can be attached to the second cable body (96b), the second flat terminal (98b) connectable to the terminal connection member (38), and the outer surface of the casing (34) And a second bracket (100b) having a second flange portion (104b) protruding radially outward of the second cable body (96b);
The third power cable portion (32c) can be attached to the third cable body (96c), the third flat terminal (98c) connectable to the terminal connection member (38), and the outer surface of the casing (34) A third bracket (100c) having a third flange portion (104c) projecting radially outward of the third cable body (96c);
Each of the first to third brackets (100a to 100c) has a flat surface of the first flat terminal (98a) and the first flange portion (104a) in a front view from the first flat terminal (98a) side. Of the second flat plate in the front view from the second flat plate terminal (98b) side in the acute angle side first angle (β1) of the angles formed with the line segment (L4) extending along the projecting direction of The angle formed by the flat surface of the terminal (98b) and the line segment (L5) extending along the projecting direction of the second flange portion (104b) is larger than the second angle (β2) on the acute angle side, and The flat surface of the third flat terminal (98c) in a front view from the third flat terminal (98c) side and the line segment (L6) extending along the projecting direction of the third flange portion (104c) The third angle (β3) on the acute side of the angles is greater than the second angle (β2) Is fixed to each of the way increases first to third cable body (96a-96c),
In the state where the first to third flange portions (104a to 104c) are attached to the casing (34), the first flange portion (104a) and the third flange portion (104c) are substantially symmetrical in the left-right direction. And the second flange portion (104b) is disposed along the first flange portion (104a) or the third flange portion (104c). .
In the vehicle cable connection structure (10) according to claim 1,
The casing (34) is a first case (42) for housing the rotating electrical machine main body (36);
And a second case (40R) for housing the terminal connection member (38);
A fastening member (70) for fastening the first case (42) and the second case (40R) is the second of the first flange portion (104a) and the third flange portion (104c). Vehicle cable characterized in that the flange portion (104b) is disposed between a flange portion (104a or 104c) different from the flange portion (104c or 104a) and the second flange portion (104b). Connection structure (10).
In the vehicle cable connection structure (10) according to claim 1 or 2,
The casing (34) is formed in a substantially cylindrical shape,
The first to third insertion holes 60a to 60c are formed in an upper portion of the casing 34.
The vehicle is characterized in that a wall portion (54) of the casing (34), in which the first to third insertion holes (60a to 60c) are formed, is inclined to a vertical line. Cable connection structure (10).