JP6125287B2 - Motor drive device - Google Patents

Description

  The present invention relates to a motor driving device that drives a motor.

  2. Description of the Related Art Conventionally, a multi-axis motor drive device configured by connecting a plurality of motor drive units having the same function is known (see, for example, Patent Document 1). The motor drive device described in Patent Document 1 includes one power supply unit in addition to a plurality of motor drive units, and power is supplied from one power supply unit to the plurality of motor drive units. In this motor drive device, each motor drive unit includes a control circuit board and a case to which the control circuit board is fixed. Similarly, the power supply unit also includes a power supply circuit board and a case to which the power supply circuit board is fixed.

JP-A-8-168293

  In the motor drive device described in Patent Document 1, since power is supplied from one power supply unit to a plurality of motor drive units, there is no need to attach a power supply circuit board to each of the motor drive units. Therefore, in this motor drive device, it is possible to simplify the configuration of the motor drive unit and reduce the size of the device as compared with the case where the power supply circuit board is attached to each motor drive unit. Here, when one motor is controlled by the motor driving device described in Patent Document 1, the motor driving device may be configured by one power supply unit and one motor driving unit. However, the motor drive device in this case requires a case for the motor drive unit and a case for the power supply unit, so that the motor drive device is enlarged.

  Accordingly, an object of the present invention is to reduce the size of the device regardless of whether the motor drive device has only one motor drive unit or the motor drive device has a plurality of motor drive units. It is an object of the present invention to provide a motor drive device that can do this.

In order to solve the above problems, a motor driving device of the present invention is a motor driving device including at least one motor driving unit for driving and controlling a predetermined number of motors, and the motor driving unit is configured to drive a motor. A driving circuit board on which a circuit and a control circuit are mounted, and a frame in which a heat radiation portion is formed and the driving circuit board is fixed, and the thickness direction of the driving circuit board fixed to the frame is a first direction, the frame On one side of the first direction, a power circuit board on which a power circuit for supplying power to the drive circuit board is mounted and a cover member covering the power circuit board can be attached. In a state where at least the power circuit board and the cover member are removed from the frame of the drive unit, one end in the first direction of the frame of the motor drive unit When the other end of the frame of the other motor drive unit in the first direction can be contacted and the motor drive unit is constituted by one motor drive unit, the power circuit board and the cover member are provided on the frame. When a motor drive device is configured by two or more motor drive units, one motor with a power source that is a motor drive unit in which the power circuit board and the cover member are attached to the frame The drive unit and the remaining motor drive unit that is disposed on the other side in the first direction of the motor drive unit with power supply and in which the power supply circuit board and the cover member are removed from the frame are in contact with each other in the first direction. It is arranged to, on the rear side of the frame, a motor drive unit to the drive unit installation member having motor drive device is attached Two insertion holes through which screws for fixing the screw are inserted are formed, and each of the two insertion holes is one diagonal line of a frame formed in a substantially rectangular shape when viewed from the front of the motor drive device. The frame is formed in each of the upper corners, and the frame protrudes to one side in the first direction in a state where one of the two insertion holes is formed and at least the power circuit board and the cover member are removed. And a notch in which the protrusion of another frame adjacent in the first direction can be arranged is formed on the other side of the frame in the first direction .

  In the motor drive device of the present invention, a power circuit board and a cover member that covers the power circuit board can be attached to one side of the frame in which the drive circuit board is fixed in the first direction. When the motor drive device is configured by the drive unit, the power circuit board and the cover member are attached to the frame. Therefore, in the present invention, when a motor driving device is constituted by one motor driving unit, it is not necessary to separately provide a frame for attaching a power supply circuit board. Therefore, in the present invention, when the motor drive device has only one motor drive unit, the motor drive device can be reduced in size.

  In the motor driving device of the present invention, when the motor driving device is constituted by two or more motor driving units, one motor driving unit in a state where the power circuit board and the cover member are attached to the frame. The motor-driven unit with a power source and the remaining motor-driven unit that is disposed on the other side in the first direction of the motor-driven unit with power source and in which the power circuit board and the cover member are removed from the frame are in the first direction. Arranged so as to contact each other. Therefore, in the present invention, it becomes possible to supply power from the power supply circuit board provided in one motor drive unit with a power supply to the drive circuit boards provided in the remaining motor drive units. There is no need to attach a power circuit board.

  In the present invention, in a state where at least the power circuit board and the cover member are removed from the frame of a certain motor drive unit, one end of the frame of the motor drive unit in the first direction and the other motor drive unit Since the other end of the frame in the first direction can be contacted, when the motor-driven unit with power supply and the remaining motor-driven unit are arranged to contact each other in the first direction, in the first direction, The motor drive units can be brought close to each other.

  As described above, in the present invention, it is not necessary to attach the power circuit board to each of the motor drive units, and the motor drive unit with power supply and the remaining motor drive units are arranged so as to contact each other in the first direction. In addition, the motor drive units can be brought closer to each other in the first direction. Therefore, in the present invention, even when the motor drive device has a plurality of motor drive units, the motor drive device can be reduced in size.

In the present invention, since the power circuit board and the cover member can be attached to one side in the first direction of the frame, the motor driving device has only one motor driving unit, and the motor It is possible to use the same frame in any case where the drive device has a plurality of motor drive units. Therefore, according to the present invention, it is possible to reduce the types of parts used in the motor driving device and facilitate inventory management of the parts. Further, in the present invention, the motor drive unit is fixed to the drive device installation member by the screws inserted into the two insertion holes formed at the corners on the diagonal line of the frame. It becomes possible to increase the fixing strength of the motor drive unit. In addition, since one of the two insertion holes is formed in the protruding portion, it is possible to ensure a distance between the insertion holes in the first direction. Therefore, it is possible to effectively increase the fixing strength of the motor drive unit to the drive device installation member. In addition, the protruding portion in which one of the two insertion holes is formed protrudes to one side in the first direction when the power circuit board, the cover member, or the like is removed, but on the other side in the first direction of the frame. Since the notch part in which the projecting part of another frame adjacent in the first direction can be arranged is formed, even if the projecting part is formed on the frame, the plurality of motor drive units are brought into contact with each other in the first direction. The projecting portion does not get in the way when arranged in such a manner.

  In the present invention, it is preferable that a power supply connector terminal to which a power supply cable can be connected is mounted on the drive circuit board. With this configuration, the power supply circuit board provided in the motor drive unit with power supply and the drive circuit board provided in the remaining motor drive units can be electrically connected easily using the power supply cable. , Can be separated.

  In the present invention, for example, an input connector terminal and an output connector terminal are mounted on the drive circuit board as power supply connector terminals. In the present invention, the motor drive device is configured by at least three motor drive units, and one end of the power supply cable is an output connector of one motor drive unit of the motor drive units adjacent in the first direction. The other end of the power supply cable connected to the terminal is preferably connected to the input connector terminal of the other motor drive unit of the motor drive units adjacent in the first direction. If comprised in this way, it will become possible to shorten the length of the cable for electric power supply. Therefore, the power supply cable can be routed in an orderly manner.

  In the present invention, the power supply connector terminal is preferably mounted on the drive circuit board so that the power supply cable is inserted from the bottom surface side of the motor drive device. In general, since an operation button, a display device, and the like are arranged on the front surface of the motor drive device, such a configuration can prevent the operability of the operation button from being impaired by the power supply cable. In general, since the cable connected to the motor or the like is pulled out from the front of the motor drive device, this configuration prevents the power supply cable from hindering the routing of the cable connected to the motor or the like. It becomes possible to prevent. Moreover, if comprised in this way, it will become possible to prevent a dust from entering the inside of the power supply connector terminal.

  In the present invention, it is preferable that a communication connector terminal to which a communication cable can be connected is mounted on the drive circuit board. With this configuration, for example, when an abnormality occurs in the power supply circuit board, the abnormality of the power supply circuit board can be detected even in a motor drive unit other than the motor drive unit with power supply using a signal communicated via the communication cable. It becomes possible to grasp.

  In the present invention, the communication connector terminal is preferably mounted on the drive circuit board so that the communication cable is inserted from the bottom surface side of the motor drive device. In general, since operation buttons, indicators, and the like are arranged on the front surface of the motor drive device, this configuration makes it possible to prevent the operability of the operation buttons from being impaired by the communication cable. In general, since the cable connected to the motor or the like is drawn from the front of the motor drive device, this configuration prevents the communication cable from hindering the routing of the cable connected to the motor or the like. It becomes possible to do. Moreover, if comprised in this way, it will become possible to prevent a dust from entering the inside of the connector terminal for communication.

  In the present invention, the projecting portion is formed on the upper end side on the back side of the frame, the circular hole is formed in the projecting portion, and the lower end opens on the lower end side on the back side of the frame. It is preferable that a U-shaped insertion hole is formed. With this configuration, when removing the motor drive unit arranged so that the motor drive unit is in contact with both sides in the first direction, the screw inserted into the insertion hole of the motor drive unit to be removed is removed, and this motor is removed. If the drive unit is shifted upward, or if the motor drive unit is shifted upward and then shifted to the front side, the motor drive unit can be removed. Therefore, even if the motor drive unit is arranged so that the motor drive unit contacts both sides in the first direction, the motor drive unit is removed without removing the motor drive units arranged on both sides in the first direction. It becomes possible. As a result, the operation for removing the motor drive unit arranged so that the motor drive unit comes into contact with both sides in the first direction is facilitated.

  In the present invention, the notch is formed so as to be notched downward from the upper end of the frame, and at least a part of the bottom surface of the notch is inclined to be inclined downward toward the back of the frame. It is preferable that it is a surface. With this configuration, even when the motor drive device is configured by two or more motor drive units, the screw can be easily inserted from the front side of the motor drive unit into the insertion hole formed in the protruding portion. Or the screw can be easily removed from the insertion hole.

  In the present invention, the frame is provided with a detachable support for supporting and fixing the power circuit board, and when the motor driving device is constituted by two or more motor driving units, the frame is not a motor driving unit with a power source. In the motor drive unit, the support is preferably removed. With this configuration, the motor-driven unit with a power supply can secure a gap between the power supply circuit board and the drive circuit board using the support, and as a result, can be mounted on the power supply circuit board or the drive circuit board. It is possible to secure an arrangement space for the electronic components to be used. Also, with this configuration, in the case where the motor drive device is configured by two or more motor drive units, in the motor drive units other than the motor drive unit with the power supply, the support post is removed, so the frame supports the support post. Even if it is provided, when the motor drive unit with power supply and the remaining motor drive units are arranged so as to contact each other in the first direction, the motor drive units can be brought closer to each other in the first direction.

  In the present invention, for example, the motor drive device is composed of two or more motor drive units, and the frames of all the motor drive units are common. In the present invention, the motor drive device is constituted by two or more motor drive units. Among the two or more motor drive units, the width of the frame in the first direction is the frame of another motor drive unit. A motor drive unit different from the width in the first direction may be included.

  In this case, if the direction orthogonal to the first direction is the second direction and the direction orthogonal to the first direction and the second direction is the third direction, the widths of all frames in the second direction are equal to each other. It is preferable that all frames have the same width in the third direction. If comprised in this way, it will become possible to design the installation place of a motor drive device easily. Further, if the width in the second direction and the width in the third direction of the frame differ according to the width in the first direction of the frame, useless space increases. Will not increase. Furthermore, if comprised in this way, the sharing of a drive circuit board and the sharing of the connector terminal position accompanying the sharing of a drive circuit board are attained. Therefore, the connector terminal position can be made the same position, and as a result, the wiring of the cable connected to the motor driving device is not messy and easy to see.

  As described above, according to the present invention, the motor drive device has either a case where the motor drive device has only one motor drive unit or a case where the motor drive device has a plurality of motor drive units. Can be miniaturized.

It is a motor drive device concerning an embodiment of the invention, and is a perspective view showing a motor drive device in the case of being constituted by a plurality of motor drive units from the front side. It is a bottom view of the motor drive device shown in FIG. It is a motor drive device concerning an embodiment of the invention, and is a perspective view showing a motor drive device in the case of being constituted by one motor drive unit from the front side. FIG. 4 is a perspective view of a state where a cover member is removed from the motor drive device shown in FIG. 3. It is a perspective view which shows the state which removed the cover member from the motor drive device shown in FIG. 3 from another direction. It is a perspective view of the flame | frame shown in FIG. It is a front view of the flame | frame shown in FIG. It is a rear view for demonstrating a state when two frames shown in FIG. 6 are arrange | positioned so that it may mutually contact. It is a motor drive device concerning other embodiments of the present invention, and is a perspective view showing the motor drive device in the case of being constituted by one motor drive unit from the front side. FIG. 10 is a perspective view of the motor drive device shown in FIG. 9 with a cover member removed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Configuration of motor drive device)
FIG. 1 is a perspective view showing a motor drive device 1 according to an embodiment of the present invention from the front side when the motor drive device 1 includes a plurality of motor drive units 2. FIG. 2 is a bottom view of the motor drive device 1 shown in FIG. FIG. 3 is a perspective view showing the motor drive device 1 according to the embodiment of the present invention from the front side when the motor drive device 1 is constituted by one motor drive unit 2. FIG. 4 is a perspective view of the motor drive device 1 shown in FIG. 3 with the cover member 8 removed. FIG. 5 is a perspective view showing the state in which the cover member 7 is removed from the motor drive device 1 shown in FIG. 3 from another direction. FIG. 6 is a perspective view of the frame 4 shown in FIG. FIG. 7 is a front view of the frame 4 shown in FIG. FIG. 8 is a rear view for explaining a state when the two frames 4 shown in FIG. 6 are arranged so as to contact each other.

  In the following description, each of the three directions orthogonal to each other is defined as an X direction, a Y direction, and a Z direction. The X direction is the left-right direction, the Y direction is the front-rear direction, and the Z direction is the up-down direction. Furthermore, the X1 direction side is the “right” side, the X2 direction side is the “left” side, the Y1 direction side is the “front” side, the Y2 direction side is the “rear (back)” side, the Z1 direction side is the “upper” side, The Z2 direction side is the “lower” side.

  The motor drive device 1 of this embodiment is a device for driving and controlling an industrial servo motor (not shown), and includes at least one motor drive unit 2 for driving and controlling one servo motor. ing. For example, as shown in FIGS. 1 and 2, the motor drive device 1 includes three motor drive units 2 that are arranged adjacent to each other in the left-right direction. Or the motor drive device 1 is comprised by the one motor drive unit 2, as shown in FIGS. The motor drive device 1 is used by being attached to a control panel or the like of a host device (not shown) on which the motor drive device 1 is mounted. Specifically, the motor drive device 1 is used by being attached to a drive device installation member constituting a part of a control panel or the like.

  The motor drive unit 2 includes a drive circuit board 3 on which a servo motor drive circuit (inverter circuit) and a control circuit are mounted, a frame 4 to which the drive circuit board 3 is fixed, and a panel fixed to the front end of the frame 4. And 5. On the left end side of the frame 4, a power circuit board 6 on which a power circuit for supplying power to the drive circuit board 3 is mounted and a cover member 7 that covers the power circuit board 6 can be attached. A cover member 8 that covers the right side surface of the frame 4 can be attached to the right end side of the frame 4. The drive circuit board 3 and the power supply circuit board 6 are rigid boards formed in a substantially rectangular flat plate shape.

  The frame 4 is formed of a heat radiating material having heat radiating properties such as an aluminum alloy. The frame 4 is formed in a substantially rectangular flat plate shape and is arranged so as to be orthogonal to the left-right direction, a substantially flat back surface portion 4 b constituting the back surface of the frame 4, and an upper end surface of the frame 4. And a substantially flat upper surface portion 4c. The back surface portion 4b is disposed so as to be orthogonal to the front-rear direction, and the upper surface portion 4c is disposed so as to be orthogonal to the vertical direction. The back surface portion 4b protrudes from the rear end of the base portion 4a to the left side, and the upper surface portion 4c protrudes from the upper end of the base portion 4a to the left side. As shown in FIG. 7, the frame 4 is formed so that the shape when viewed from the front is substantially rectangular.

  On the right side surface of the base portion 4a, a heat radiating portion 4e made of a plurality of heat radiating fins is formed. As shown in FIG. 4B, a cooling fan 11 can be attached to the heat radiating portion 4e (that is, the right side surface of the base member 4a). The left side surface of the base portion 4a is a substrate fixing portion 4f to which the drive circuit substrate 3 is fixed. Further, a block-like column mounting portion 4g is formed at the front lower end of the left side surface of the base portion 4a so as to protrude to the left front side.

  A support (stud pin) 12 for supporting and fixing the power circuit board 6 is fixed to the support mounting part 4g so as to protrude to the left. The support | pillar 12 is formed in the hexagonal column shape, for example. A male screw is formed on the right end side of the column 12. The support column 12 is fixed to the support column mounting portion 4g by the male screw and the female screw formed on the support column mounting portion 4g, and the support column 12 can be attached to and detached from the support column mounting portion 4g.

  A protruding portion 4h protruding leftward is formed on the upper end side of the back surface portion 4b. That is, on the upper end side of the back surface portion 4b, a protruding portion 4h that protrudes to the left side of the other portion of the back surface portion 4b excluding the protruding portion 4h is formed. The protrusion 4h is formed in a substantially square flat plate shape. A cutout portion 4j cut out toward the right side is formed at an intermediate position in the vertical direction of the back surface portion 4b. In addition, two insertion holes 4k and 4m are formed in the back surface portion 4b. A screw 13 for fixing the motor drive unit 2 to a drive device installation member to which the motor drive device 1 is attached is inserted through the insertion holes 4k and 4m.

  Each of the two insertion holes 4k and 4m is formed at each of the corners on one diagonal line of the frame 4 having a substantially rectangular shape when viewed from the front. Specifically, the insertion hole 4k is formed in the protrusion 4h. That is, the insertion hole 4k is formed at a corner on the upper left side of the back surface portion 4b. Further, the insertion hole 4m is formed at a corner on the lower right side of the back surface portion 4b. The insertion hole 4k is formed in a round hole shape. On the other hand, the insertion hole 4m is formed in a U-groove shape having a lower end opened.

  A plurality of through holes for heat dissipation are formed in the upper surface portion 4c. A cutout portion 4n is formed at the boundary portion between the base portion 4a and the upper surface portion 4c (that is, the upper end side of the base portion 4a). Specifically, a cutout portion 4n is formed on the rear upper end side of the base portion 4a. The cutout portion 4n is formed so as to be cut out from the upper end of the base portion 4a toward the lower side. The bottom surface of the notch 4n is composed of an inclined surface 4p that is inclined downward toward the rear side (that is, toward the back surface of the frame 4) and a horizontal surface 4q that is orthogonal to the vertical direction. The horizontal surface 4q is connected to the rear end of the inclined surface 4p.

  In this embodiment, when the column 12 is removed from the column mounting portion 4g of one of the two frames 4, as shown in FIG. 8, the left end of one frame 4 and the right end of the other frame 4 The frame 4 is configured so as to be in contact with each other. Specifically, when the column 12 is removed from the column mounting portion 4g of one frame 4, the left end surface of the back surface portion 4b and the left end surface of the upper surface portion 4c of the one frame 4 and the base portion 4a of the other frame 4 are separated. The frame 4 is configured so that the right side is in close contact.

  When the left end of one frame 4 and the right end of the other frame 4 are in close contact with each other, the protrusion 4h of one frame 4 is disposed in the notch 4n of the other frame 4 as shown in FIG. Thus, the protrusion 4h does not come into contact with the left side surface of the base portion 4a of the other frame 4 and the phenomenon that the left end of one frame 4 and the right end of the other frame 4 cannot be brought into close contact with each other does not occur. Note that the protruding portion 4h protrudes to the left of the other portion of the back surface portion 4b excluding the protruding portion 4h when the power circuit board 6 and the cover member 7 are detached from the frame 4 alone. However, in a state where the power supply circuit board 6 and the cover member 7 are attached to the frame 4, the left end surface of the protruding portion 4 h and the left side surface of the cover member 7 substantially coincide with each other in the left-right direction.

  The drive circuit board 3 is fixed to the board fixing part 4f of the base part 4a so that the thickness direction thereof substantially coincides with the left-right direction. As shown in FIG. 2, connector terminals 15 and 16 as power supply connector terminals to which a power supply cable (power supply cable) (not shown) can be connected are mounted on the lower end side of the drive circuit board 3. Has been. The connector terminal 15 is an input connector terminal for taking power into the drive circuit board 3, and the connector terminal 16 is an output connector terminal for taking out power from the drive circuit board 3. Further, two connector terminals 17 as communication connector terminals to which a communication cable (communication cable) (not shown) can be connected are mounted on the lower end side of the drive circuit board 3. In this embodiment, the left-right direction (X direction) is the first direction that is the thickness direction of the drive circuit board 3. In the present embodiment, the left side is one side in the first direction, and the right side is the other side in the first direction.

  The connector terminals 15 to 17 are mounted on the front end side of the drive circuit board 3. The connector terminals 15 and 16 are mounted on the drive circuit board 3 so that a power supply cable is inserted from the bottom surface side of the motor drive device 1. Similarly, the two connector terminals 17 are mounted on the drive circuit board 3 so that a communication cable is inserted from the bottom surface side of the motor drive device 1. That is, the connector terminals 15 to 17 are mounted on the drive circuit board 3 so that the insertion ports of the connector terminals 15 to 17 face downward. Various electronic components are mounted on the drive circuit board 3. Various connector terminals to which a cable or the like drawn from the servo motor is connected are mounted on the front end side of the drive circuit board 3.

  The power circuit board 6 can be attached to the left end surface of the support column 12 with screws or the like. In a state where the power supply circuit board 6 is attached to the left end surface of the support column 12, the thickness direction of the power supply circuit board 6 is substantially coincident with the left-right direction. Various electronic components are mounted on the power circuit board 6. In addition, a connector terminal to which a cable drawn from the AC power supply is connected is mounted on the front end side of the power circuit board 6. The power supply circuit board 6 of this embodiment is for 800W, for example.

  As shown in FIG. 5, a support member 20 for supporting the power supply circuit board 6 attached to the left end face of the support column 12 is fixed to the right side face of the power supply circuit board 6. The support member 20 includes a leg portion (not shown) that comes into contact with the left side surface of the base portion 4a when the power supply circuit board 6 is attached to the left end surface of the support column 12, and the leg portion is the base portion. The power supply circuit board 6 is supported by the support member 20 by coming into contact with 4a. The drive circuit board 3 is formed with an insertion hole (not shown) through which the leg portion is inserted.

  An engagement hole 7a is formed on the upper surface portion of the cover member 7 to engage with an engagement claw portion 4s formed on the upper surface portion 4c of the frame 4, and the base portion of the frame 4 is formed on the lower surface portion of the cover member 7. An engagement hole 7b is formed in which an engagement claw portion 4t (see FIG. 2) formed at the lower end of 4a is engaged. When the engaging claw 4s is engaged with the engaging hole 7a and the engaging claw 4t is engaged with the engaging hole 7b, the cover member 7 is fixed to the frame 4. A cover member 7 fixed to the frame 4 covers the power circuit board 6 from the left side.

  The cover member 8 can be fixed to the left side surface of the base portion 4a with a screw (not shown). When the fan 11 is attached to the heat radiating part 4e, the cover member 8 covers the fan 11. As shown in FIG. 3, a through hole 8 a for securing an air flow path is formed at a location corresponding to the fan 11 of the cover member 8. In this embodiment, the air sent out from the fan 11 flows efficiently along the fins of the heat radiating part 4e by the action of the cover member 8, and therefore the heat radiating part 4e is efficiently cooled.

  An engagement claw portion 5 a that engages with the upper surface portion 4 c of the frame 4 is formed on the upper surface portion of the panel 5, and an engagement claw portion that engages with the column mounting portion 4 g of the frame 4 on the lower surface portion of the panel 5. 5 b (see FIG. 2) is formed, and the panel 5 is fixed to the frame 4 by engaging the engaging claws 5 a and 5 b with the frame 4. The panel 5 is formed with an opening for exposing a connector terminal fixed to the front end side of the drive circuit board 3 and a connector terminal fixed to the front end side of the power supply circuit board 6. A console 21 is disposed on the upper end side of the panel 5.

  As will be described below, the motor drive unit 2 includes a motor drive unit 2 to which the power circuit board 6 is attached and a motor drive unit 2 to which the power circuit board 6 is not attached. The panel 5 of the motor drive unit 2 to which the substrate 6 is attached (for example, the motor drive unit 2A in FIG. 1) and the motor drive unit 2 to which the power circuit board 6 is not attached (for example, the motor drive unit 2B in FIG. 1). The panel 5 is different in the width in the left-right direction, the configuration of the console 21, and the like. In the following description, when the panel 5 of the motor drive unit 2 to which the power supply circuit board 6 is attached is distinguished from the panel 5 of the motor drive unit 2 to which the power supply circuit board 6 is not attached, the former panel is used. 5 is referred to as “panel 5A”, and the latter panel 5 is referred to as “panel 5B”.

  In this embodiment, when the motor drive device 1 is constituted by one motor drive unit 2, the support 12 is fixed to the support mounting part 4g and, as shown in FIGS. 6 and the cover member 7 are attached to the frame 4. Further, the panel 5 </ b> A and the cover member 8 are attached to the frame 4. In this case, the fan 11 may not be attached to the frame 4 (see FIG. 4A) or the fan 11 may be attached to the frame 4 depending on the amount of heat generated by the drive circuit board 3 and the power supply circuit board 6. (See FIG. 4B). In this case, the drive circuit board 3 and the power supply circuit board 6 are electrically connected by a cable or the like not shown so that power is supplied from the power supply circuit board 6 to the drive circuit board 3. Yes.

  On the other hand, for example, when the motor drive device 1 is configured by three motor drive units 2, the motor drive device 1 is a single piece with the power circuit board 6 and the cover member 7 attached to the frame 4. The motor drive unit (motor drive unit with power supply) 2 and the remaining two motor drive units 2 with the power circuit board 6 and the cover member 7 removed are configured. In the following description, when the motor drive unit 2 with power supply and the other two motor drive units 2 are distinguished from each other, the motor drive unit 2 with power supply is represented as “motor drive unit 2A”, and the power supply circuit The remaining two motor drive units 2 with the substrate 6 and the cover member 7 removed are referred to as “motor drive units 2B”.

  As shown in FIG. 1, the motor drive unit 2 </ b> A is disposed at the left end of the motor drive device 1. In the motor drive unit 2A, the column 12 is fixed to the column mounting portion 4g. In the motor drive unit 2 </ b> A, the panel 5 </ b> A is attached to the frame 4, and the cover member 8 is not attached to the frame 4. The two motor drive units 2B are disposed on the right side of the motor drive unit 2A. In the motor drive unit 2B, the column 12 is removed from the column attachment portion 4g. In the motor drive unit 2B, the panel 5B is attached to the frame 4, and the cover member 8 is not attached to the frame 4. Note that a cover member 8 may be attached to the frame 4 in the motor drive unit 2 </ b> B disposed at the right end of the motor drive device 1. In motor drive units 2A and 2B, fan 11 may be attached to frame 4, or may not be attached.

  The motor drive unit 2A and the two motor drive units 2B are arranged so as to contact each other in the left-right direction. Specifically, the right end of the frame 4 of the motor drive unit 2A and the left end of the frame 4 of the motor drive unit 2B arranged in the middle are in close contact, and the frame 4 of the motor drive unit 2B arranged in the middle The motor drive unit 2A and the two motor drive units 2B are arranged so that the right end and the left end of the frame 4 of the motor drive unit 2B arranged at the right end are in close contact with each other.

  Even if the fan 11 is attached to the frame 4 of the motor drive unit 2A, the right end of the frame 4 of the motor drive unit 2A and the left end of the frame 4 of the motor drive unit 2B disposed in the middle are in close contact. A drive circuit board 3 and a fan 11 are arranged. Similarly, even if the fan 11 is attached to the frame 4 of the motor drive unit 2B arranged in the middle, the motor drive unit 2B arranged at the right end and the right end of the frame 4 of the motor drive unit 2B arranged in the middle. The drive circuit board 3 and the fan 11 are arranged so that the left end of the frame 4 is in close contact.

  In the motor drive unit 2A, the drive circuit board 3 and the power supply circuit board 6 are electrically connected by a cable or the like (not shown) so that power is supplied from the power supply circuit board 6 to the drive circuit board 3. . When the motor driving device 1 is configured by the three motor driving units 2, the motor driving device 1 includes two power supply cables. One end of one of the two power supply cables is connected to the connector terminal 16 of the motor drive unit 2A, and this power supply cable is connected to the connector terminal 15 of the motor drive unit 2B arranged in the middle. Are connected at the other end. One end of the remaining one power supply cable is connected to the connector terminal 16 of the motor drive unit 2B arranged in the middle, and this power supply is supplied to the connector terminal 15 of the motor drive unit 2B arranged at the right end. The other end of the cable is connected. That is, one end of the power supply cable is connected to the connector terminal 15 of one motor drive unit 2 of the motor drive unit 2 adjacent in the left-right direction, and the other end of the power supply cable is adjacent to the motor drive in the left-right direction. It is connected to the connector terminal 16 of the other motor drive unit 2 of the unit 2.

  When the motor driving device 1 is configured by the three motor driving units 2, the motor driving device 1 includes two communication cables. One end of one of the two communication cables is connected to the connector terminal 17 of the motor drive unit 2A, and one connector terminal 17 of the two connector terminals 17 of the motor drive unit 2B arranged in the middle. Is connected to the other end of the communication cable. One end of the remaining one communication cable is connected to the other connector terminal 17 of the motor drive unit 2B disposed in the middle, and this communication terminal is connected to the connector terminal 17 of the motor drive unit 2B disposed at the right end. The other end of the cable is connected. That is, one end of the communication cable is connected to the connector terminal 17 of one motor drive unit 2 of the motor drive unit 2 adjacent in the left-right direction, and the other end of the communication cable is connected to the motor drive unit 2 adjacent in the left-right direction. The other motor drive unit 2 is connected to the connector terminal 17. In this embodiment, when an abnormality occurs in the power supply circuit board 6, an error signal is generated from the power supply circuit board 6. Between the three motor drive units 2, a communication cable is used. The error signal is communicated.

(Main effects of this form)
As described above, in this embodiment, the power circuit board 6 and the cover member 7 can be attached to the left end side of the frame 4 to which the drive circuit board 3 is fixed. When the motor driving device 1 is configured, the power circuit board 6 and the cover member 7 are attached to the frame 4. Therefore, in this embodiment, it is not necessary to separately provide a frame for attaching the power circuit board 6 and the cover member 7 in addition to the frame 4. Therefore, in this embodiment, when the motor drive device 1 is configured by one motor drive unit 2, the motor drive device 1 can be reduced in size.

  In this embodiment, for example, when the motor driving device 1 is configured by three motor driving units 2, the motor driving unit 2A to which the power circuit board 6 is attached and the two to which the power circuit board 6 is not attached. The motor drive unit 2B is disposed so as to contact each other in the left-right direction. The motor drive unit 2A and the motor drive unit 2B arranged in the middle are connected by a power supply cable, and the motor drive unit 2B arranged in the middle and the motor drive unit 2B arranged at the right end are connected to the electric power. Connected by supply cable. Therefore, in this embodiment, electric power can be supplied from the power supply circuit board 6 provided in the motor drive unit 2A to the drive circuit boards 3 provided in the two motor drive units 2B. Therefore, in this embodiment, it is not necessary to attach the power circuit board 6 to each of the plurality of motor drive units 2.

  Further, in this embodiment, when the column 12 is removed from the column mounting portion 4g of one frame 4 of the two frames 4, the left end surface of the back surface portion 4b and the left end surface of the upper surface portion 4c of the one frame 4 When the frame 4 is configured such that the right side surface of the base portion 4a of the other frame 4 is in close contact, and the motor driving device 1 is configured by three motor driving units 2, the motor driving unit 2A The right end of the frame 4 and the left end of the frame 4 of the motor drive unit 2B disposed in the middle are in close contact, and the motor drive disposed at the right end and the right end of the frame 4 of the motor drive unit 2B disposed in the middle. The left end of the frame 4 of the unit 2B is in close contact. Therefore, in this embodiment, when the plurality of motor drive units 2 are arranged so as to contact each other in the left-right direction, the motor drive units 2 can be brought closer to each other in the left-right direction.

  As described above, in this embodiment, it is not necessary to attach the power circuit board 6 to each of the plurality of motor drive units 2, and when the plurality of motor drive units 2 are arranged so as to contact each other in the left-right direction, The motor drive units 2 can be brought closer to each other in the direction. Therefore, in this embodiment, even when the motor drive device 1 is configured by a plurality of motor drive units 2, the motor drive device 1 can be downsized.

  Further, in this embodiment, since the power circuit board 6 and the cover member 7 can be attached to the left end side of the frame 4, when the motor driving device 1 is constituted by one motor driving unit 2, and The same frame 4 can be used in any case where the motor drive device 1 is constituted by a plurality of motor drive units 2. Therefore, in this embodiment, it is possible to reduce the types of parts used in the motor drive device 1 and facilitate parts inventory management and the like.

  In this embodiment, one end of the power supply cable is connected to the connector terminal 15 of one motor drive unit 2 of the motor drive unit 2 adjacent in the left-right direction, and the other end of the power supply cable is adjacent in the left-right direction. The motor drive unit 2 is connected to the connector terminal 16 of the other motor drive unit 2. Therefore, in this embodiment, the motor drive unit 2A and the rightmost motor drive unit 2B are connected as compared with the case where the motor drive unit 2A and each of the two motor drive units 2B are connected by the power supply cable. It becomes possible to shorten the length of the power supply cable. Therefore, in this embodiment, the power supply cable can be routed in an orderly manner.

  Similarly, in this embodiment, one end of the communication cable is connected to the connector terminal 17 of one motor drive unit 2 of the motor drive unit 2 adjacent in the left-right direction, and the other end of the communication cable is adjacent in the left-right direction. Since the motor drive unit 2 is connected to the connector terminal 17 of the other motor drive unit 2, the motor drive unit 2A and each of the two motor drive units 2B are compared with the case where they are connected by communication cables. Thus, the length of the communication cable connecting the motor drive unit 2A and the rightmost motor drive unit 2B can be reduced. Therefore, in this embodiment, the communication cable can be routed in an orderly manner.

  In this embodiment, when an abnormality occurs in the power supply circuit board 6, an error signal is generated from the power supply circuit board 6. Between the three motor drive units 2, a communication cable is used. The error signal is communicated. Therefore, in this embodiment, when an abnormality occurs in the power supply circuit board 6, the motor drive unit 2 </ b> B other than the motor drive unit 2 </ b> A can grasp the abnormality of the power supply circuit board 6.

  In this embodiment, the connector terminals 15 to 17 are mounted on the lower end side of the drive circuit board 3 so that the insertion ports face downward. Therefore, in this embodiment, it is possible to prevent the operability of the console 21 arranged on the panel 5 from being damaged by the power supply cable or the communication cable. Further, it is possible to prevent the power supply cable and the communication cable from hindering the routing of various cables drawn from the front side of the motor drive device 1. Further, in this embodiment, it is possible to prevent dust from entering the connector terminals 15 to 17.

  In this embodiment, each of the insertion holes 4k and 4m through which the screw 13 for fixing the motor drive unit 2 to the drive device installation member is inserted is one of the frames 4 having a substantially rectangular shape when viewed from the front. Is formed at each of the corners on the diagonal line. Therefore, in this embodiment, it is possible to increase the fixing strength of the motor drive unit 2 to the drive device installation member. In particular, in this embodiment, since the insertion hole 4k is formed in the protruding portion 4h protruding to the left side, it is possible to secure the distance between the insertion hole 4k and the insertion hole 4m in the left-right direction, and as a result, the drive device The fixing strength of the motor drive unit 2 to the installation member can be effectively increased.

  In this embodiment, the frame 4 is formed with a notch 4n. For example, when the motor drive device 1 is constituted by three motor drive units 2, the protrusion 4h is arranged on the left side. The other frame 4 is arranged in a notch 4n. Therefore, in this embodiment, even if the projecting portion 4h is formed on the frame 4, the right end of the frame 4 of the motor drive unit 2A and the left end of the frame 4 of the motor drive unit 2B arranged in the middle are closely attached, and The right end of the frame 4 of the motor drive unit 2B arranged in the middle can be brought into close contact with the left end of the frame 4 of the motor drive unit 2B arranged at the right end.

  In the present embodiment, the protruding portion 4h is formed on the upper end side of the back surface portion 4b. Therefore, in this embodiment, when removing the motor drive unit 2B arranged in the middle from the motor drive device 1 constituted by the three motor drive units 2, the motor drive unit 2B is inserted into the insertion holes 4k and 4m. If the screw 13 is removed and the motor drive unit 2B is shifted upward, or if the motor drive unit 2B is shifted upward and then shifted forward, the motor drive unit 2A and the motor drive unit 2B arranged at the right end are shifted. The motor drive unit 2B can be removed without removing the drive device installation member. Therefore, in this embodiment, the work for removing the motor drive unit 2B arranged in the middle from the motor drive device 1 constituted by the three motor drive units 2 is facilitated.

  In this embodiment, since the notch 4j is formed in the back surface portion 4b, the motor drive unit 2B arranged in the middle is directed upward even if the fan 11 is attached to the frame 4 of the motor drive unit 2A. Preventing interference between the fan 11 attached to the frame 4 of the motor drive unit 2A and the back surface portion 4b of the frame 4 of the motor drive unit 2B arranged in the middle when the front side is removed after being shifted. Can do.

  In the present embodiment, the bottom surface of the cutout portion 4n of the frame 4 is composed of an inclined surface 4p that inclines downward toward the rear side, and a horizontal surface 4q that is connected to the rear end of the inclined surface 4p and is orthogonal to the vertical direction. Has been. Therefore, in this embodiment, even if the motor drive device 1 is configured by a plurality of motor drive units 2, the screws 13 can be easily inserted from the front side of the motor drive unit 2 to the insertion holes 4k formed in the protrusion 4h. The screw 13 can be easily removed from the insertion hole 4k.

  In this embodiment, the support column 12 is fixed to the frame 4. Therefore, in this embodiment, in the motor drive unit 2 with a power supply, it becomes possible to secure a gap between the drive circuit board 3 and the power supply circuit board 6 by using the support column 12, and as a result, the drive circuit board 3 and An arrangement space for electronic components mounted on the power supply circuit board 6 can be secured. Further, in this embodiment, for example, when the motor driving device 1 is configured by three motor driving units 2, the column 12 is removed from the frame 4 in the motor driving unit 2 </ b> B. However, when the plurality of motor drive units 2 are arranged so as to contact each other in the left-right direction, the motor drive units 2 can be brought closer to each other in the left-right direction.

(Other embodiments)
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention.

  In the embodiment described above, the power supply circuit board 6 is for 800 W, for example, but the power supply circuit board 6 may correspond to a capacity larger than 800 W. For example, the power supply circuit board 6 may be for 2 kW. In this case, as shown in FIGS. 9 and 10, the width of the frame 4 in the left-right direction, the width of the panel 5 in the left-right direction, and the width of the cover members 7, 8 in the left-right direction are the frame 4 in the above-described form. The width in the left-right direction, the width in the left-right direction of the panel 5, and the width in the left-right direction of the cover members 7, 8 are larger. Moreover, the fixing position of the support | pillar 12 fixed to the flame | frame 7 and the number of the support | pillars 12 differ between the motor drive unit 2 shown in FIG. 9, FIG. 10 and the motor drive unit 2 of the form mentioned above.

  On the other hand, the front-rear width and the vertical height of the frame 4 shown in FIGS. 9 and 10, the front-rear width and the vertical height of the panel 5, the front-rear width and the upper-lower height of the cover members 7, 8. The height in the direction is respectively the width in the front-rear direction and the height in the vertical direction of the frame 4 in the above-described form, the width in the front-rear direction and the height in the vertical direction of the panel 5, the width in the front-rear direction of the cover members 7 and 8 It is the same as the vertical height. In this case, the design of the installation location of the motor drive device 1 becomes easy. In addition, if the width in the front-rear direction and the height in the vertical direction of the frame 4 and the like are different according to the corresponding capacity, useless space increases, but in this case, useless space does not increase. . Further, in this case, the drive circuit board 3 can be shared, and the connector terminal positions can be shared with the drive circuit board 3 in common. Therefore, the connector terminal position can be set to the same position. As a result, the wiring of the cable connected to the motor drive device 1 is not messy and easy to see. In this case, the front-rear direction is the second direction, and the up-down direction is the third direction.

  In this case, the motor drive unit 2 in the case where the motor drive unit 1 is configured by one motor drive unit 2 or the motor drive unit 1 is configured by a plurality of motor drive units 2. In the motor drive unit 2 with a power supply (that is, the motor drive unit 2A), a back plate 25 is attached to the left side of the back surface portion 4b of the frame 4. In this case, in the motor drive unit 2 other than the motor drive unit 2 with a power source (that is, the motor drive unit 2B) in the case where the motor drive device 1 is configured by the plurality of motor drive units 2, the back plate 25 Has been removed.

  In the form mentioned above, the motor drive device 1 comprised by the several motor drive unit 2 is comprised from one motor drive unit 2A and two motor drive units 2B. In addition to this, for example, the motor drive device 1 may be composed of one motor drive unit 2A and one motor drive unit 2B, or one motor drive unit 2A and three or more motor drives. It may be composed of the unit 2B.

  Moreover, the motor drive device 1 may be configured by a combination of the motor drive unit 2 having the above-described form and the motor drive unit 2 shown in FIGS. 9 and 10. That is, the motor drive device 1 may be configured by a combination of motor drive units 2 having different widths in the left-right direction of the frame 4. Even in the two frames 4 of the frame 4 of the motor drive unit 2 in the above-described form and the frame 4 of the motor drive unit 2 shown in FIGS. 9 and 10, the frame 4 is one of the two frames 4. When the column 12 is removed, the frame 4 of the motor drive unit 2 of the above-described form and the motor drive shown in FIGS. 9 and 10 are arranged so that the left end of one frame 4 and the right end of the other frame 4 come into contact with each other. A frame 4 of the unit 2 is configured. Further, the motor drive device 1 may be configured by a combination of three or more types of motor drive units 2 having different horizontal widths of the frame 4 and the like.

  In the embodiment described above, the column 12 is removed from the column attachment portion 4g in the motor drive unit 2B, but the column 12 may be attached to the column attachment portion 4g in the motor drive unit 2B. In this case, when the motor drive device 1 is constituted by the three motor drive units 2, the right end of the frame 4 of the motor drive unit 2A and the support 12 of the motor drive unit 2B arranged in the middle. The left end is in contact with the right end of the frame 4 of the motor drive unit 2B arranged in the middle and the left end of the column 12 of the motor drive unit 2B arranged at the right end.

  In the embodiment described above, one end of the power supply cable is connected to the connector terminal 15 of one motor drive unit 2 of the motor drive unit 2 adjacent in the left-right direction, and the other end of the power supply cable is adjacent in the left-right direction. The other motor drive unit 2 of the matching motor drive unit 2 is connected to the connector terminal 16. In addition, for example, the motor drive unit 2A having the power circuit board 6 and each of the two motor drive units 2B may be connected by a power supply cable. Similarly, in the embodiment described above, one end of the communication cable is connected to the connector terminal 17 of one motor drive unit 2 of the motor drive units 2 adjacent in the left-right direction, and the other end of the communication cable is connected in the left-right direction. Although connected to the connector terminal 17 of the other motor drive unit 2 of the adjacent motor drive unit 2, the motor drive unit 2A having the power circuit board 6 and each of the two motor drive units 2B are communication cables. It may be connected with.

  In the embodiment described above, the connector terminals 15 to 17 are mounted on the lower end side of the drive circuit board 3 so that the insertion ports face downward. In addition, for example, the connector terminals 15 to 17 may be mounted on the upper end side of the drive circuit board 3 so that the insertion ports face upward. Moreover, in the form mentioned above, although the protrusion part 4h is formed in the upper end side of the back surface part 4b, the protrusion part 4h may be formed in the lower end side of the back surface part 4b. Moreover, the protrusion part 4h does not need to be formed in the back surface part 4b. In this case, the notch 4n may not be formed in the frame 4. In the above-described embodiment, the motor drive unit 2 drives and controls one servo motor, but the motor drive unit 2 drives and controls a plurality of servo motors such as two or three. You may control.

DESCRIPTION OF SYMBOLS 1 Motor drive device 2, 2B Motor drive unit 2A Motor drive unit (motor drive unit with a power supply)
3 Drive circuit board 4 Frame 4e Heat radiation part 4h Projection part 4k, 4m Insertion hole 4n Notch part 4p Inclined surface 6 Power supply circuit board 7 Cover member 12 Post 13 Screw 15 Connector terminal (input connector terminal, power supply connector terminal)
16 Connector terminals (output connector terminals, power supply connector terminals)
17 Connector terminal (Connector terminal for communication)
X 1st direction Y 2nd direction Z 3rd direction

Claims (13)

A motor drive device comprising at least one motor drive unit for driving and controlling a predetermined number of motors,
The motor drive unit includes a drive circuit board on which a drive circuit and a control circuit of the motor are mounted, and a frame on which a heat radiation portion is formed and the drive circuit board is fixed.
When the thickness direction of the drive circuit board fixed to the frame is a first direction,
On one side of the frame in the first direction, a power circuit board on which a power circuit for supplying power to the drive circuit board is mounted and a cover member that covers the power circuit board can be attached. And
In a state where at least the power circuit board and the cover member are removed from the frame of the motor drive unit, one end of the frame of the motor drive unit in the first direction and the other motor drive unit The other end of the frame in the first direction can be contacted,
When the motor driving device is constituted by one motor driving unit, the power circuit board and the cover member are attached to the frame,
When the motor driving device is constituted by two or more motor driving units, the power source circuit board and the cover member are attached to the frame and have one power source as the motor driving unit. A motor drive unit, and the remaining motor drive unit disposed on the other side in the first direction of the motor drive unit with power supply and having the power supply circuit board and the cover member removed from the frame. Arranged to contact each other in the first direction ,
On the back side of the frame, two insertion holes are formed through which screws for fixing the motor drive unit are inserted into a drive device installation member to which the motor drive device is attached,
Each of the two insertion holes is formed in each of the corners on one diagonal of the frame formed in a substantially rectangular shape when viewed from the front of the motor drive device,
The frame includes a protruding portion that protrudes to one side in the first direction in a state where one of the two insertion holes is formed and at least the power circuit board and the cover member are removed,
The motor driving device according to claim 1, wherein a notch portion in which the protruding portion of another frame adjacent in the first direction can be arranged is formed on the other side of the frame in the first direction .   2. The motor drive device according to claim 1, wherein a power supply connector terminal to which a power supply cable can be connected is mounted on the drive circuit board.   The motor drive apparatus according to claim 2, wherein an input connector terminal and an output connector terminal are mounted on the drive circuit board as the power supply connector terminals. The motor driving device includes at least three or more motor driving units,
One end of the power supply cable is connected to the output connector terminal of one of the motor drive units adjacent to the motor drive unit in the first direction, and the other end of the power supply cable is connected to the first The motor drive device according to claim 3, wherein the motor drive unit is connected to the input connector terminal of the other motor drive unit of the motor drive units adjacent in the direction.   The said power supply connector terminal is mounted in the said drive circuit board so that the said power supply cable may be inserted from the bottom face side of the said motor drive device, The said any one of Claim 2 to 4 characterized by the above-mentioned. Motor drive device.   6. The motor driving apparatus according to claim 1, wherein a communication connector terminal to which a communication cable can be connected is mounted on the drive circuit board.   The motor drive device according to claim 6, wherein the communication connector terminal is mounted on the drive circuit board so that the communication cable is inserted from a bottom surface side of the motor drive device. The projecting portion is formed on the upper end side of the back side of the frame, and the projecting portion is formed with the round hole-shaped insertion hole,
The motor drive device according to any one of claims 1 to 7, wherein the insertion hole having a U-groove shape having a lower end opened is formed on a lower end side of the back side of the frame. The notch is formed so as to be cut from the upper end of the frame toward the lower side,
9. The motor driving apparatus according to claim 8 , wherein at least a part of the bottom surface of the notch is an inclined surface that is inclined downward as it goes toward the back surface of the frame. The frame includes a detachable support for supporting and fixing the power circuit board,
The said support | pillar is removed in said motor drive units other than the said motor drive unit with a power supply when the said motor drive unit is comprised by the two or more said motor drive units. The motor drive device according to any one of 9 . The motor driving device is constituted by two or more motor driving units,
All of the motor driving device according to any one of claims 1 to 10, the frame of the motor drive unit is characterized in that are common. The motor driving device is constituted by two or more motor driving units,
The two or more motor drive units include the motor drive unit in which the width of the frame in the first direction is different from the width of the frame of the other motor drive unit in the first direction. the motor drive device according to claim 1, characterized in that there 10. When the direction orthogonal to the first direction is the second direction, and the direction orthogonal to the first direction and the second direction is the third direction,
The widths of all the frames in the second direction are equal to each other;
The motor driving device according to claim 12 , wherein the widths of all the frames in the third direction are equal to each other.

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