JP6599077B1 - Backplane and motor drive unit - Google Patents

Abstract

One for the substrate (11) having the fixed surface (11a), the first terminal (14) and the second terminal (17) provided on the fixed surface (11a), and the first terminal (14). A first positive electrode side extended terminal (15) protruding to the side, a second positive electrode side extended terminal (16) protruding to the other side, and a first terminal protruding to one side with respect to the second terminal (17). A negative electrode side expansion terminal (18) and a second negative electrode side expansion terminal (19) protruding to the other side. The first terminal (14) is connected to the first positive electrode bus terminal electrically connected to the positive electrode bus of the motor drive device. The second terminal (17) is connected to a first negative electrode bus terminal electrically connected to the negative electrode bus of the motor drive device. The first positive electrode side expansion terminal (15) and the second positive electrode side expansion terminal (16) are connectors that can be connected to each other, and the first negative electrode side expansion terminal (18) and the second negative electrode side expansion terminal ( 19) is a connector connectable to each other.

Description

  The present invention relates to a backplane to which a motor driving device is fixed and a motor driving device unit.

  The motor drive device includes a converter that converts an AC voltage into a DC voltage, an inverter that converts the DC voltage into an AC voltage, and a bus that connects the converter and the inverter. There are cases where a plurality of motor driving devices are used simultaneously to form a unit. Patent Document 1 discloses a configuration in which a plurality of motor driving devices are fixed to one backplane. The backplane is provided with wiring connected to a plurality of connectors. Electric power is supplied to the bus of the motor drive device via a connector and wiring provided on the backplane.

  When a plurality of motor drive devices are unitized, the bus voltage of the motor drive device may be shared. In order to make the bus voltage common, there is a case where a wiring that connects wirings that supply power to the buses of a plurality of motor driving devices is formed on the backplane.

Japanese Patent Application Laid-Open No. 08-205556

  However, since the bus voltage is shared among a plurality of motor driving devices by wiring formed on one backplane, the size of the backplane is increased when the number of motor driving devices is varied. In addition, it is necessary to change the route of the internal wiring. Therefore, it is necessary to design and prepare a dedicated backplane every time the number of motor driving devices is different, so that the versatility is inferior and the degree of design freedom is reduced.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a backplane that can improve versatility and design flexibility when sharing the bus voltage.

  In order to solve the above-described problems and achieve the object, the present invention provides a substrate having a fixing surface on which the motor driving device is fixed and facing the back surface of the motor driving device, and a first terminal provided on the fixing surface. And a second terminal provided on the fixed surface, a first positive terminal that is electrically connected to the first terminal and protrudes to one side with respect to the first terminal, and a first terminal And a second positive terminal that is electrically connected to the first terminal and protrudes to the other side of the first terminal, and is electrically connected to the second terminal and protrudes to the one side of the second terminal. The first negative electrode side extended terminal, and the second negative electrode side extended terminal that is electrically connected to the second terminal and protrudes to the other side with respect to the second terminal. The first terminal is electrically connected to the positive bus of the motor driving device and connected to the first positive bus terminal provided on the back surface in a state where the motor driving device is fixed to the fixed surface. The second terminal is connected to the first negative electrode bus terminal provided on the back surface and electrically connected to the negative electrode bus of the motor drive device in a state where the motor drive device is fixed to the fixed surface. The first positive electrode side expansion terminal and the second positive electrode side expansion terminal are connectors that can be connected to each other. The first negative electrode side expansion terminal and the second negative electrode side expansion terminal are connectors that can be connected to each other.

  The backplane according to the present invention has an effect that it is possible to improve versatility and design freedom when sharing the bus voltage.

1 is a block diagram showing a configuration of a motor drive system using a motor drive device according to a first embodiment of the present invention. A perspective view showing an appearance of a motor drive unit in Embodiment 1 The perspective view of the motor drive device in Embodiment 1 Side view of motor drive apparatus according to Embodiment 1 The perspective view of the back plane concerning Embodiment 1. FIG. The figure which shows the state which installed the backplane concerning Embodiment 1 side by side. The figure explaining the assembly process of the motor drive unit unit concerning Embodiment 1. FIG.

  Hereinafter, a backplane and a motor drive unit according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a motor drive system using the motor drive apparatus according to the first embodiment of the present invention. In the motor drive system, a plurality of motor drive devices 1 are used. A motor 40 is connected to each motor drive device 1. An AC power supply 41 is connected to the motor drive device 1, and an AC voltage is supplied from the AC power supply 41 to the motor drive device 1.

  The motor drive device 1 includes a converter 42 that converts an AC voltage into a DC voltage. The motor drive device 1 includes an inverter 43 that converts the DC voltage converted by the converter 42 into an AC voltage. The motor drive device 1 includes a positive electrode bus 44 and a negative electrode bus 45 that connect the converter 42 and the inverter 43 and supply the DC voltage converted by the converter 42 to the inverter 43. The motor drive device 1 supplies the AC voltage converted by the inverter 43 to the motor 40 to drive the motor 40. The motor drive system includes a positive electrode connection bus 46 that connects the positive electrode buses 44 of the plurality of motor drive devices 1 and a negative electrode connection bus 47 that connects the negative electrode buses 45. By connecting the positive electrode buses 44 and connecting the negative electrode buses 45, the bus voltage can be shared. The motor driving device 1 includes a regenerative resistor 20. The regenerative resistor 20 has a regenerative resistor that absorbs regenerative energy generated when the motor 40 connected to the motor drive device 1 is decelerated.

  FIG. 2 is a perspective view showing an external appearance of the motor drive unit in the first embodiment. As shown in FIG. 1, when a motor drive system is constructed using a plurality of motor drive devices 1, the plurality of motor drive devices 1 are fixed side by side on a common control panel 30 as shown in FIG. 2. The motor drive unit 50 may be used in some cases. Here, the direction in which the motor drive devices 1 are arranged is defined as the X-axis direction. The direction along the X axis is the second direction. Further, a direction parallel to the plate surface of the control panel 30 and perpendicular to the X axis is taken as a Z axis direction. The direction along the Z axis is the first direction. A direction perpendicular to the X axis and the Z axis is taken as a Y axis direction. For convenience, the positive direction along the X axis is the right direction, and the negative direction is the left direction. Further, a positive direction along the Y axis is a front direction, and a negative direction is a back direction. Further, a positive direction along the Z-axis is an upward direction, and a negative direction is a downward direction. Note that the concepts of up / down, left / right, and front side change depending on the installation posture of the motor drive unit 50.

  Below, the detailed structure of the backplane 10 which fixes the motor drive device 1 and the motor drive device 1 to the control panel 30 is demonstrated. FIG. 3 is a perspective view of the motor drive apparatus according to the first embodiment. FIG. 4 is a side view of the motor drive device according to the first embodiment.

  The motor drive device 1 includes a housing 2 that serves as an outer shell. The housing 2 has a rectangular parallelepiped shape, and includes the converter 42, the inverter 43, the positive electrode bus 44, and the negative electrode bus 45 described above. Of the outer peripheral surface of the housing 2, a back surface 2 a which is a surface facing the back side is provided with a driving device side first terminal 3, a driving device side second terminal 4, a driving device side third terminal 5, and a driving device side fourth. A terminal 6 is provided. The driving device side first terminal 3, the driving device side second terminal 4, the driving device side third terminal 5, and the driving device side fourth terminal 6 are arranged side by side in the vertical direction.

  The drive device side first terminal 3 is a first positive electrode bus terminal connected to the positive electrode bus 44 of the motor drive device 1. The drive device side second terminal 4 is a first negative electrode bus terminal connected to the negative electrode bus 45 of the motor drive device 1. The drive device side third terminal 5 is a second positive electrode bus terminal connected to the positive electrode bus 44 of the motor drive device 1. The drive device side fourth terminal 6 is a second negative electrode bus terminal connected to the negative electrode bus 45 of the motor drive device 1.

  A connector 7 is provided on the front surface 2b which is the surface facing the front side of the outer peripheral surface of the housing 2. The connector 7 is connected to input wiring connected to the AC power supply 41, a power line for supplying power to the motor 40, a signal line for controlling the motor 40, and the like.

  FIG. 5 is a perspective view of the backplane according to the first exemplary embodiment. The backplane 10 includes a substrate 11. Screw holes 12 and 13 are formed in the substrate 11 so as to be fixed to the control panel 30 with screws. A fixed surface 11 a parallel to the plate surface of the control panel 30 is provided on the substrate 11. The fixed surface 11a is a surface to which the motor driving device 1 is fixed. In a state where the motor driving device 1 is fixed, the fixing surface 11 a faces the back surface 2 a of the motor driving device 1.

  A board-side first terminal 14 and a board-side second terminal 17 are provided on the fixed surface 11a. The board side first terminal 14 is a first terminal. The board side second terminal 17 is a second terminal. The board-side first terminal 14 and the board-side second terminal 17 are provided side by side. A regenerative resistor 20 is provided on the fixed surface 11 a below the panel-side first terminal 14 and the panel-side second terminal 17. The regenerative resistor 20 is provided with a panel-side third terminal 21 and a panel-side fourth terminal 22. The panel side third terminal 21 and the panel side fourth terminal 22 are connected to a regenerative resistor of the regenerative resistor 20. The board side third terminal 21 is a third terminal. The panel side fourth terminal 22 is a fourth terminal.

  In a state where the motor driving device 1 is fixed to the fixed surface 11a, the panel side first terminal 14 and the driving device side first terminal 3 are connected. In a state where the motor driving device 1 is fixed to the fixed surface 11a, the panel side second terminal 17 and the driving device side second terminal 4 are connected. In a state where the motor driving device 1 is fixed to the fixed surface 11a, the panel side third terminal 21 and the driving device side third terminal 5 are connected. In a state where the motor driving device 1 is fixed to the fixed surface 11a, the panel-side fourth terminal 22 and the driving device-side fourth terminal 6 are connected. The panel-side third terminal 21 and the panel-side fourth terminal 22 are spring-type terminals biased toward the back surface 2 a side of the motor drive device 1.

  The fixed surface 11 a is provided with a first positive electrode side extended terminal 15 that is electrically connected to the panel side first terminal 14 and protrudes leftward. The fixed surface 11a is provided with a second positive electrode side extended terminal 16 that is electrically connected to the panel side first terminal 14 and protrudes to the right. The first positive electrode side expansion terminal 15 and the second positive electrode side expansion terminal 16 are connectors that can be connected to each other.

  The fixed surface 11a is provided with a first negative side extended terminal 18 that is electrically connected to the panel side second terminal 17 and protrudes leftward. The fixed surface 11a is provided with a second negative electrode side extended terminal 19 which is electrically connected to the panel side second terminal 17 and protrudes to the right. The first negative electrode side expansion terminal 18 and the second negative electrode side expansion terminal 19 are connectors that can be connected to each other.

  On the upper and lower sides of the substrate 11 of the backplane 10, there are formed holding portions 23 and 24 that protrude forward and hold the housing 2 of the motor drive device 1 in between. Since the holding parts 23 and 24 and the housing 2 are engaged with each other, the motor driving device 1 is prevented from being detached from the backplane 10.

  FIG. 6 is a diagram illustrating a state in which the backplanes according to the first embodiment are installed side by side. As shown in FIG. 6, by arranging the backplanes 10 side by side in the left-right direction, the first positive electrode side extension terminals 15 and the second positive electrode side extension terminals 16 of the adjacent backplanes 10 can be connected. . In addition, the first negative electrode side extended terminal 18 and the second negative electrode side extended terminal 19 can be connected by arranging the backplane 10 side by side in the left-right direction. As a result, the board-side first terminals 14 are electrically connected to each other between the adjacent backplanes 10. Further, the board-side second terminals 17 are electrically connected to each other between the adjacent backplanes 10.

  FIG. 7 is a diagram for explaining an assembly process of the motor drive unit according to the first embodiment. In the assembly process of the motor drive unit 50, first, the backplane 10 is fixed to the surface of the control panel 30 with screws 31. At this time, the first positive electrode side expansion terminal 15 and the second positive electrode side expansion terminal 16 are connected to each other between the adjacent backplanes 10. Further, the first negative electrode side extended terminal 18 and the second negative electrode side extended terminal 19 are connected between the adjacent backplanes 10.

  Next, the housing 2 of the motor driving device 1 is inserted between the holding portions 23 and 24 formed on the substrate 11 of the backplane 10, and the motor driving device 1 is fixed. Thereby, the assembly process of the motor drive unit 50 shown in FIG. 2 is completed. By fixing the motor driving device 1, the positive electrode buses 44 of the adjacent motor driving devices 1 are connected to the driving device side first terminal 3, the panel side first terminal 14, the first positive electrode side expansion terminal 15, and the first. The positive connection buses 46 shown in FIG. 1 are configured to be electrically connected via the two positive side expansion terminals 16. Further, the negative electrode buses 45 of the adjacent motor drive devices 1 are connected to each other via the drive device side second terminal 4, the panel side second terminal 17, the first negative electrode side extended terminal 18, and the second negative electrode side extended terminal 19. Thus, the negative connection bus 47 shown in FIG. 1 is formed. As a result, the bus voltage can be shared between adjacent motor driving devices 1.

  Further, if the backplane 10 is installed according to the number of motor driving devices 1 included in the motor driving device unit 50, the positive electrode connecting bus 46 and the negative electrode connecting bus 47 are configured according to the number of motor driving devices 1. Therefore, it is not necessary to form the positive connection bus 46 and the negative connection bus 47 according to the number of the motor driving devices 1 on the control panel 30 and the backplane 10. Therefore, the motor drive device unit 50 can easily change the increase / decrease of the motor drive device 1, and can improve versatility and design flexibility.

  Further, by fixing the motor driving device 1 to the backplane 10, the driving device side third terminal 5 and the panel side third terminal 21 are connected. Further, by fixing the motor driving device 1 to the backplane 10, the driving device side fourth terminal 6 and the panel side fourth terminal 22 are connected. That is, the positive electrode bus 44 and the regenerative resistor 20 of the motor drive device 1 are connected to each other, and the negative electrode bus 45 of the motor drive device 1 and the regenerative resistor 20 are connected simply by fixing the motor drive device 1 to the backplane 10. Is done. Thereby, the motor drive device 1 provided with the regenerative resistor 20 is obtained. Therefore, a separate wiring work for connecting the positive electrode bus 44 and the negative electrode bus 45 and the regenerative resistor 20, for example, a work of extending the wiring from the connector 7 provided on the front surface 2b and connecting to the regenerative resistor 20 is unnecessary. It becomes. Thus, the number of work steps in the assembly process of the motor drive unit 50 can be reduced.

  The arrangement direction and arrangement order of the board side first terminal 14, the board side second terminal 15, the board side third terminal 21, and the board side fourth terminal 22 are not limited to the exemplified configurations. Further, the direction in which the first positive electrode side expansion terminal 15, the second positive electrode side expansion terminal 16, the first negative electrode side expansion terminal 18 and the second negative electrode side expansion terminal 19 protrude is not limited to the illustrated example. For example, the first positive electrode side expansion terminal 15, the second positive electrode side expansion terminal 16, the first negative electrode side expansion terminal 18, and the second negative electrode side expansion terminal 19 are projected in the direction along the Z axis, These motor drive devices 1 may be arranged side by side in the direction along the Z-axis.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. The part can be omitted or changed.

  DESCRIPTION OF SYMBOLS 1 Motor drive device, 2 Housing | casing, 2a Back surface, 2b Front surface, 3 Drive device side 1st terminal, 4 Drive device side 2nd terminal, 5 Drive device side 3rd terminal, 6 Drive device side 4th terminal, 7 Connector, 10 Backplane, 11 Substrate, 11a Fixing surface, 12, 13 Screw hole, 14 Panel side first terminal, 15 First positive side expansion terminal, 16 Second positive side expansion terminal, 17 Panel side second terminal, 18 1st negative side expansion terminal, 19 2nd negative side expansion terminal, 20 regenerative resistor, 21 panel side 3rd terminal, 22 panel side 4th terminal, 23, 24 clamping part, 30 control panel, 31 screw, 40 Motor, 41 AC power supply, 42 Converter, 43 Inverter, 44 Positive bus, 45 Negative bus, 46 Positive connection bus, 47 Negative connection bus, 50 Motor drive unit.

Claims (3)

A substrate having a fixing surface to which the motor driving device is fixed and facing the back surface of the motor driving device;
A first terminal provided on the fixed surface;
A second terminal provided on the fixed surface;
A first positive electrode side expansion terminal electrically connected to the first terminal and projecting to one side with respect to the first terminal;
A second positive-side extended terminal electrically connected to the first terminal and protruding to the other side with respect to the first terminal;
A first negative side extended terminal electrically connected to the second terminal and projecting to one side with respect to the second terminal;
A second negative electrode side extended terminal electrically connected to the second terminal and projecting to the other side with respect to the second terminal;
The first terminal is connected to the first positive bus terminal provided on the back surface and electrically connected to the positive bus of the motor driving device in a state where the motor driving device is fixed to the fixed surface. And
The second terminal is connected to the first negative electrode bus terminal provided on the back surface and electrically connected to the negative electrode bus of the motor drive device in a state where the motor drive device is fixed to the fixed surface. And
The first positive side extension terminal and the second positive side extension terminal are connectors that can be connected to each other,
The back plane, wherein the first negative electrode side extended terminal and the second negative electrode side extended terminal are connectors that can be connected to each other. A regenerative resistor provided on the fixed surface;
A third terminal electrically connected to the regenerative resistor;
A fourth terminal electrically connected to the regenerative resistor,
The third terminal is connected to a second positive electrode bus terminal electrically connected to a positive electrode bus of the motor drive device in a state where the motor drive device is fixed to the fixed surface,
The fourth terminal is connected to a second negative electrode bus terminal electrically connected to a negative electrode bus of the motor drive device in a state where the motor drive device is fixed to the fixed surface. The backplane according to claim 1. A plurality of backplanes according to claim 1 or 2 provided side by side;
The motor driving device fixed to each of the plurality of backplanes,
Between the adjacent backplanes, the first positive side extension terminal and the second positive side extension terminal are joined, and the first negative side extension terminal and the second negative side extension terminal are joined. A motor drive unit characterized in that

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