JP7346954B2 - Motor generator harness connection structure - Google Patents

Description

The present invention relates to a harness connection structure for a motor generator attached to an engine unit.

In recent years, electric vehicles and hybrid vehicles have been attracting attention due to their fuel efficiency and environmental considerations. In a hybrid vehicle, a motor generator (also called a motor generator) is attached to the engine unit. The motor generator functions, for example, as an electric motor that assists the engine unit during acceleration, and as a generator that generates electricity using deceleration energy during deceleration.
Regarding this type of technology, Patent Document 1 discloses a support structure for a motor generator with respect to a power unit.

Japanese Patent Application Publication No. 2011-78258

The motor generator is connected to the battery via a wire harness (simply referred to as a harness in this application).
Here, the motor generator has two terminal shafts, and these two terminal shafts are sometimes arranged side by side in the axial direction of the motor generator. On the other hand, when connecting harnesses to two terminal shafts, these two harnesses are often arranged so as to extend substantially parallel to each other along the axial direction of the motor generator.
In this situation, where the direction in which the two terminal shafts are lined up and the direction in which the two harnesses extend are the same, it becomes necessary to bend the harnesses when connecting each harness to each terminal shaft, reducing the ease of wiring the harness. .

The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the ease of wiring a motor generator harness.

In the motor generator harness connection structure of the present invention, a first terminal shaft and a second terminal shaft are arranged side by side on a motor generator attached to an engine unit, and the first terminal shaft and the second terminal shaft A harness connection structure for a motor generator in which a harness is connected to a first harness, a second harness, and a first terminal shaft provided at an end of the first harness. a first connector for connecting to the second terminal shaft, and a second connector for connecting to the second terminal shaft, which is provided at an end of the second harness; The direction in which the terminal shafts are lined up and the direction in which the first harness and the second harness extend are the same, and there is an imaginary line including the axial center of the first terminal shaft and the axial center of the second terminal shaft. The first connector is arranged on one side with a plane in between, the second connector is arranged on the other side, and the first connector has a hole formed therein through which the first terminal shaft is inserted. The second connector has a plate-like first connecting portion, the first connecting portion extends from the one side toward the other side, and the second connector is inserted through the second terminal shaft. a plate-shaped second connecting portion in which a hole is formed, the second connecting portion extending from the other side toward the one side , and connecting the first terminal shaft to the first terminal shaft; a wall portion disposed between two terminal shafts and extending to intersect the virtual plane, the wall portion having a high wall portion and a low wall portion, and the low wall portion at the position of the low wall portion; The first connector or the second connector is located in a direction further away from the motor generator, and the first connector or the second connector is located on at least one of the virtual plane side and the opposite side with respect to the low wall portion. The first connector or the second connector may be in contact with the high wall portion .

According to the present invention, it is possible to improve the wiring performance of the motor generator harness.

FIG. 2 is a right side view showing an example of an engine unit to which the present invention is applicable. 1 is a top view showing an example of an engine unit to which the present invention is applicable. It is a front view showing a motor generator unit. It is a figure showing a motor generator unit seen from the axial direction of a terminal shaft. FIG. 3 is a diagram showing peripheral structures of a first terminal shaft and a second terminal shaft. FIG. 3 is a diagram showing peripheral structures of a first terminal shaft and a second terminal shaft. FIG. 3 is a diagram showing peripheral structures of a first terminal shaft and a second terminal shaft.

In a harness connection structure for a motor generator according to an embodiment of the present invention, a first terminal shaft and a second terminal shaft are arranged side by side on a motor generator attached to an engine unit, and the first terminal shaft and the second terminal shaft are arranged side by side. A harness connection structure for a motor generator that connects harnesses to second terminal shafts, the first harness, the second harness, and the first harness provided at an end of the first harness. a first connector for connecting to a terminal shaft; and a second connector provided at an end of the second harness for connecting to the second terminal shaft, the first terminal The direction in which the shaft and the second terminal shaft are arranged is the same as the direction in which the first harness and the second harness extend, and the axis of the first terminal shaft and the second terminal shaft are aligned. The first connector is arranged on one side of a virtual plane including the axis, the second connector is arranged on the other side, and the first connector is inserted through the first terminal shaft. the second connector has a plate-shaped first connection portion in which a hole is formed, the first connection portion extends from the one side toward the other side, and the second connector The device has a plate-shaped second connecting portion having a hole through which the terminal shaft is inserted, and the second connecting portion extends from the other side toward the one side.
In this way, the first connector is arranged on one side of the virtual plane, the second connector is arranged on the other side, and the first connector of the first connector extends in the direction of extension. and the extending direction of the second connecting portion of the second connector are opposite to each other. Thereby, there is no need to bend the harness to change the wiring direction, and the ease of wiring the harness can be improved.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, an example of an engine unit 100 to which the present invention is applicable will be described with reference to FIGS. 1 and 2. FIG. 1 is a right side view of the engine unit 100, and FIG. 2 is a top view of the engine unit 100. The engine unit 100 is an internal combustion engine that burns fuel to generate power, and is installed in a vehicle such as an automobile as a power source. In this embodiment, the direction viewed from the driver's seat of the vehicle is the front of the vehicle, the opposite direction is the rear, the right side is the right side, and the left side is the left side, and these directions are indicated by arrows as necessary. It is shown by In this embodiment, the direction shown in FIG. 1 is "front", but the arrangement of the engine unit 100 is not limited to the illustrated example, and can be appropriately selected depending on the type of vehicle.

The engine unit 100 includes an engine block 102, a cylinder head 103 and a cylinder head cover 104 at the top of the engine block 102, and an oil pan 105 at the bottom of the engine block 102. Further, a cam timing chain for driving a camshaft of a valve mechanism is arranged on the right side of the engine block 102 and cylinder head 103, and is covered with a chain cover 106.
Although not shown, the engine unit 100 includes an intake device that supplies air from an air cleaner, a fuel supply device that supplies fuel, an exhaust device that discharges exhaust gas from the engine unit 100 after combustion, and a cooling device that cools the engine unit 100. A cooling device that lubricates the moving parts of the engine unit 100 and a lubrication device that lubricates the movable parts of the engine unit 100 are attached.
The engine unit 100 configured as described above causes the piston to reciprocate within the engine block 102 by burning fuel, and rotates the crankshaft 101 via the connecting rod. A crank pulley 107 provided at the end of the crankshaft 101 is arranged on the right side of the engine unit 100.

Motor generator unit 1 is attached to the front right side of engine unit 100 via a plurality of brackets 108 . The motor generator unit 1 has a generally cylindrical shape as a whole, and is arranged so that its axis A is horizontal. A pulley 2 is provided at the right end of the motor generator unit 1, and a belt (not shown) is wound between it and a crank pulley 107. In this way, the motor generator unit 1 is connected to the engine unit 100 via a belt so that power can be transmitted, and functions, for example, as an electric motor that assists the engine unit during acceleration, and as a generator that uses deceleration energy to generate electricity during deceleration. Function.

Hereinafter, with reference also to FIGS. 3 to 6A and 6B, a harness connection structure for a motor generator according to an embodiment will be described.
3 and 4 are diagrams showing the motor generator unit 1 attached to the engine unit 100. FIG. 3 is a front view of the motor generator unit 1, and FIG. 4 is a diagram showing the motor generator unit 1 viewed from the axial direction of the terminal shafts 3 and 4 (without the caps 22 and 23). Note that in FIGS. 3 and 4, illustration of the engine unit 100 is omitted, and only the motor generator unit 1 is shown. Moreover, FIG. 5, FIG. 6A, and FIG. 6B are diagrams showing the peripheral structure of the first terminal shaft 3 and the second terminal shaft 4.

A terminal block portion 24 is provided at the upper front and left side of the outer peripheral portion of the motor generator unit 1 . As shown in FIGS. 4 and 6A, two pin-shaped terminal shafts 3 and 4 are installed in the terminal block section 24. As shown in FIGS. In this embodiment, the first terminal shaft 3, which is a negative terminal, is erected on the right side of the terminal block portion 24, and the second terminal shaft 4, which is a positive terminal, is erected on the left side. In this way, the first terminal shaft 3 and the second terminal shaft 4 are arranged side by side in the axial direction of the motor generator unit 1.

A first harness 5 is connected to the first terminal shaft 3, and a second harness 6 is connected to the second terminal shaft 4. The motor generator unit 1 is connected to a battery (not shown) via these harnesses 5 and 6.
As shown in FIGS. 1 and 2, the first harness 5 and the second harness 6 are arranged adjacent to each other so that the first harness 5 is on the inside and the second harness 6 is on the outside. It passes through the upper right side of the motor generator unit 1 from the right side and wraps around the upper front of the motor generator unit 1. By routing the first harness 5 and the second harness 6 in this manner, the ease of routing the harnesses 5 and 6 is improved, and interference with other parts etc. around the engine unit 100 is avoided. be able to.
As shown in FIG. 4, at the upper front of the motor generator unit 1, the second harness 6 separates from the first harness 5 and extends diagonally outward (forward) to form the terminal block section 24. Near the motor generator unit 1 , the first harness 5 and the second harness 6 are arranged to extend substantially parallel to each other along the axial direction of the motor generator unit 1 . In this way, the situation is such that the direction in which the first terminal shaft 3 and the second terminal shaft 4 are lined up coincides with the direction in which the first harness 5 and the second harness 6 extend. In this case, the second harness 6 located outside (front) of the first harness 5 is connected to the second terminal shaft 4 beyond the position of the first terminal shaft 3. It is longer than Harness 5 of 1.

A metal first connector 7 for connecting to the first terminal shaft 3 is provided at the end of the first harness 5 . Furthermore, a second metal connector 8 for connecting to the second terminal shaft 4 is provided at the end of the second harness 6 . In addition, in each figure, the connectors 7 and 8 are appropriately patterned to make them easier to see.
Below, as shown in FIG. 4, the arrangement of each part will be explained using a virtual plane P including the axis of the first terminal shaft 3 and the axis of the second terminal shaft 4.
As described above, the first harness 5 is located inside (rear), the second harness 6 is located outside (front), the first connector 7 is located at the rear across the virtual plane P, and the first harness 7 is located at the front. A second connector 8 is arranged.

The first connector 7 includes a plate-shaped first connection part 9, a plate-shaped first vertical surface part 10 connected to the end of the first connection part 9, and extending in a direction away from the motor generator unit 1. It has a first base part 11 that supports the first vertical surface part 10 and is connected to the end of the first harness 5.
In the first connector 7 , a first vertical surface portion 10 is connected to the rear end of the first connecting portion 9 . That is, the first connecting portion 9 is arranged so as to extend from the rear toward the front. The tip (front end) of the first connecting portion 9 has an arc shape.
By configuring the first connecting portion 9 and the first base 11 to be continuous via the first vertical surface portion 10 in this way, the position of the first base 11 (that is, the position of the first harness 5) ), the position of the first connecting portion 9 can be lowered to make it easier to connect the first connecting portion 9 to the first terminal shaft 3.
A hole 12 through which the first terminal shaft 3 is inserted is formed in the first connecting portion 9 . When assembling the first connector 7 to the first terminal shaft 3, the first connecting portion 9 is placed on the terminal block portion 24 so that the first terminal shaft 3 is inserted through the hole 12. Then, the first connecting portion 9 is fixed by screwing the nut 13 (see FIG. 6A) onto the first terminal shaft 3.

The second connector 8 also includes a plate-shaped second connection part 14 and a plate-shaped second vertical surface part 15 that is connected to the end of the second connection part 14 and extends in a direction away from the motor generator unit 1. and a second base portion 16 that supports the second vertical surface portion 15 and connects to the end of the second harness 6.
In the second connector 8 , a second vertical surface portion 15 is connected to the front end of the second connecting portion 14 . That is, the second connecting portion 14 is arranged so as to extend from the front toward the rear. In this way, the extending direction of the first connecting portion 9 and the extending direction of the second connecting portion 14 are opposite to each other. The tip (end in the rear direction) of the second connecting portion 14 has an arc shape.
By configuring the second connecting portion 14 and the second base portion 16 to be continuous through the second vertical surface portion 15 in this way, the position of the second base portion 16 (that is, the position of the second harness 6 ), the position of the second connecting portion 14 can be lowered, making it possible to create a structure in which the second connecting portion 14 can be easily connected to the second terminal shaft 4.
A hole 17 through which the second terminal shaft 4 is inserted is formed in the second connecting portion 14 . When assembling the second connector 8 to the second terminal shaft 4, the second connecting portion 14 is placed on the terminal block portion 24 so that the second terminal shaft 4 is inserted through the hole 17. Then, the second connecting portion 14 is fixed by screwing the nut 18 (see FIG. 6A) onto the second terminal shaft 4.
As described above, the second harness 6 is connected to the second terminal shaft 4 beyond the position of the first terminal shaft 3, and the second harness 6 is connected to the second terminal shaft 4 when the second connector 8 is assembled to the second terminal shaft 4. Then, as shown in FIG. 5, the second base portion 16 is located exactly in front of the first terminal shaft 3.

In the terminal block section 24, a resin wall section 19 is provided upright between the first terminal shaft 3 and the second terminal shaft 4. The wall portion 19 extends to intersect the virtual plane P, and is curved to match the arc shape of the tip (rearward end) of the second connecting portion 14 .
By providing the wall portion 19 between the first terminal shaft 3 and the second terminal shaft 4 in this manner, the spatial distance and creepage distance between the terminal shafts 3 and 4 can be secured. Furthermore, since the space for assembling the first connecting part 9 and the space for assembling the second connecting part 14 are separated, it can be used as a guide for how to position the first connecting part 9 and the second connecting part 14. also works. In particular, by curving the wall portion 19 to match the arc shape of the tip of the second connecting portion 14, it is clearly seen that the second connecting portion 14 is connected to the second terminal shaft, thereby preventing incorrect assembly. become.

Further, as shown in FIG. 4, the side portion 14a of the second connecting portion 14 comes into contact with the wall portion 19, thereby preventing the second connecting portion 14 from rotating. As described above, the second connecting portion 14 is fixed by screwing the nut 18 onto the second terminal shaft 4, but at this time, when the second connecting portion 14 rotates around the second terminal shaft 4, The second harness 6 swings and interferes with other harnesses. By employing the anti-rotation structure of the second connecting portion 14, it is possible to prevent the second harness 6 from interfering with other harnesses, etc., and improve the ease of assembly.

Further, at the rear of the terminal block section 24, a substantially triangular prism-shaped resin wall section 20 is erected. A gap 21 is formed between the wall portion 19 and the wall portion 20. As shown in FIG. 4, the side portion 9a of the first connecting portion 9 comes into contact with the wall portion 20, thereby preventing the first connecting portion 9 from rotating. As described above, the first connecting portion 9 is fixed by screwing the nut 13 onto the first terminal shaft 3, but at this time, when the first connecting portion 9 rotates around the first terminal shaft 3, The first harness 5 swings and interferes with other harnesses. By adopting the anti-rotation structure of the first connecting portion 9, it is possible to prevent the first harness 5 from interfering with other harnesses, etc., and improve the ease of assembly.

Here, as shown in FIG. 6A, the rear end 19a of the wall portion 19 has a lower height. Further, the height of the front end 19b of the wall portion 19 gradually decreases. In addition, in the wall part 19, the end parts 19a and 19b are called a low wall part, and the tall part between the low wall parts 19a and 19b is called a high wall part 19c.
As shown in FIG. 5, in the second connector 8, the second vertical surface portion 15 extends below the second base portion 16 (in the direction approaching the motor generator unit 1) in order to connect to the second connection portion 14. It takes on the shape of an extension. In this case, the second vertical surface portion 15 does not immediately extend downward from the second base portion 16, but the connecting portion 15a of the second vertical surface portion 15 that connects to the second base portion 16 is connected to the second vertical surface portion 15. The shape is such that it remains at a higher position than the connecting portion 14 of.
As a result, the second connector 8 is arranged such that its connection portion 15a passes above the low wall portion 19b of the wall portion 19 (in the direction away from the motor generator unit 1), and the connection portion 15a is located above the low wall portion 19b of the wall portion 19. It is arranged at approximately the same height position as the wall portion 19c. The inner surface of the connecting portion 15a is in contact with the high wall portion 19c on the side of the virtual plane P with respect to the low wall portion 19b (on the back side of the paper in FIG. 5).
In this way, the second connector 8 is configured to abut against the wall portion 19 (high wall portion 19c). This restricts the movement of the second connector 8 and prevents the second connector 8 from bending even when an external force is applied from the second harness 6 side, for example.
Although a configuration has been described in which the second connector 8 contacts the wall portion 19 on the side of the virtual plane P with respect to the low wall portion 19b of the wall portion 19, the present invention is not limited to this. For example, the second connector 8 may be brought into contact with the wall 19 on the opposite side of the virtual plane P to the low wall 19b of the wall 19.

As shown in FIGS. 3 and 6B, with the first harness 5 connected to the first terminal shaft 3, the first cap 22 made of resin is attached to cover the first connector 7. The first cap 22 has a shape that covers the upper portions of the first connecting portion 9 and the first vertical surface portion 10 . Note that in FIG. 6B, illustration of the first harness 5 is omitted.

Further, as shown in FIGS. 3 and 6B, a second cap 23 made of resin is attached to cover the second connector 8 with the second harness 6 connected to the second terminal shaft 4. Ru. The second cap 23 has a portion 23a having a shape that covers the second connection portion 14 and the second vertical surface portion 15, and a cylindrical portion 23b that covers the first base portion 16, and has an approximately L-shape as a whole. has. Note that in FIG. 6B, illustration of the second harness 6 is omitted. A portion of the second cap 23 is positioned and held by fitting into the gap 21 between the walls 19 and 20.

As described above, the first connector 7 is arranged at the rear across the virtual plane P, the second connector 8 is arranged at the front, and the first connection part 9 of the first connector 7 is connected from the rear. The first connecting portion 14 of the second connector 8 extends from the front toward the rear. In this way, the extending direction of the first connecting portion 9 of the first connector 7 and the extending direction of the second connecting portion 14 of the second connector 8 are opposite to each other. When assembling the first connector 7 to the first terminal shaft 3, the first connecting part 9 is inserted from the rear, whereas the second connector 8 is assembled to the second terminal shaft 4. In this case, the second connecting portion 14 may be inserted from the front. Thereby, there is no need to bend the harness to change the wiring direction, and the positional relationship in which the first harness 5 and the second harness 6 extend substantially parallel to each other along the axial direction of the motor generator unit 1 can be maintained. This makes it possible to improve the ease of wiring the harnesses 5 and 6.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, each embodiment merely shows a specific example of implementing the present invention. The technical scope of the present invention is not limited to each example. The present invention can be modified in various ways without departing from its spirit, and these are also included within the technical scope of the present invention.
In the above embodiment, an example has been described in which the motor generator unit 1 is attached to the front part of the engine unit 100, but the attachment location is not limited.
Further, the specific shape of each part is not limited, and can be changed as appropriate within the technical scope of the present invention. For example, the walls 19 and 20 may be configured as an integral wall. In addition, although the wall portion 19 is curved to match the arc shape of the tip (back end) of the second connection portion 14, the tip (front end) of the first connection portion 9 The shape may be curved to match the arc shape of.

1: motor generator unit, 3: first terminal shaft, 4: second terminal shaft, 5: first harness, 6: second harness, 7: first connector, 8: second connector, 9: first connection portion, 10: first vertical surface portion, 11: first base portion, 12: hole, 14: second connection portion, 15: second vertical surface portion, 16: second base portion, 17: hole, 19, 20: wall, 100: engine unit

Claims (4)

A motor generator harness connection in which a first terminal shaft and a second terminal shaft are arranged side by side on a motor generator attached to an engine unit, and harnesses are connected to the first terminal shaft and the second terminal shaft, respectively. The structure is
a first harness;
a second harness;
a first connector provided at an end of the first harness for connecting to the first terminal shaft;
a second connector provided at an end of the second harness for connecting to the second terminal shaft;
The direction in which the first terminal shaft and the second terminal shaft are lined up is the same as the direction in which the first harness and the second harness extend,
The first connector is arranged on one side of a virtual plane including the axis of the first terminal shaft and the axis of the second terminal shaft, and the second connector is arranged on the other side. is,
The first connector has a plate-shaped first connection portion in which a hole through which the first terminal shaft is inserted is formed, and the first connection portion extends from the one side to the other side. Extending towards
The second connector has a plate-shaped second connection portion in which a hole through which the second terminal shaft is inserted is formed, and the second connection portion extends from the other side to the one side. Extending towards
a wall portion disposed between the first terminal shaft and the second terminal shaft and extending to intersect the virtual plane;
The wall portion has a high wall portion and a low wall portion, and the first connector or the second connector is located at the position of the low wall portion in a direction farther from the motor generator than the low wall portion,
A motor generator characterized in that the first connector or the second connector contacts the high wall portion on at least one of the virtual plane side and the opposite side with respect to the low wall portion. Harness connection structure. The first connector includes a first vertical surface portion that is connected to an end of the first connection portion on the one side and extends in a direction away from the motor generator; a first base connected to the first harness;
The second connector includes a second vertical surface portion that is connected to the other end of the second connection portion and extends in a direction away from the motor generator; The motor generator harness connection structure according to claim 1, further comprising a second base portion connected to the second harness. The wall portion has a first abutting portion where a side portion of the first connecting portion abuts to prevent rotation, and a second abutting portion where a side portion of the second connecting portion abuts to prevent rotation. The motor generator harness connection structure according to claim 1 or 2, wherein the motor generator harness connection structure constitutes at least one of the contact portions. The first terminal shaft and the second terminal shaft are arranged side by side in the axial direction of the motor generator,
4. The motor generator according to claim 1, wherein the first harness and the second harness are arranged to extend substantially parallel to each other along the axial direction of the motor generator. Motor generator harness connection structure.

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