WO2017085872A1 - モータ及びモータの製造方法 - Google Patents
モータ及びモータの製造方法 Download PDFInfo
- Publication number
- WO2017085872A1 WO2017085872A1 PCT/JP2015/082737 JP2015082737W WO2017085872A1 WO 2017085872 A1 WO2017085872 A1 WO 2017085872A1 JP 2015082737 W JP2015082737 W JP 2015082737W WO 2017085872 A1 WO2017085872 A1 WO 2017085872A1
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- Prior art keywords
- frame
- substrate
- motor
- board
- heat
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
Definitions
- the disclosed embodiment relates to a motor and a method for manufacturing the motor.
- Patent Document 1 describes a servo motor with a built-in drive circuit in which a motor drive board and a sensor circuit board are arranged in parallel in a sensor cover.
- the present invention has been made in view of such problems, and an object of the present invention is to provide a motor and a motor manufacturing method capable of improving the heat dissipation of an amplifier unit.
- a motor unit including a stator and a rotor, and an amplifier unit that supplies power to the motor unit
- the amplifier unit includes: A first frame constituting a housing of the amplifier unit; and at least a first frame positioned in a direction perpendicular to a rotation axis direction of the rotor in the first frame and accommodated in the first frame.
- a motor having a second frame to which one substrate is attached is applied.
- a motor manufacturing method including a motor unit including a stator and a rotor, and an amplifier unit that supplies electric power to the motor unit. Attaching at least one substrate accommodated in a first frame constituting the housing to the second frame; and attaching the second frame to which the at least one substrate is attached to the rotor of the first frame. And a method of manufacturing a motor having a first surface located in a direction perpendicular to the rotation axis direction.
- a motor unit including a stator and a rotor, and an amplifier unit that supplies electric power to the motor unit
- the amplifier unit includes: A frame constituting the housing; and means for dissipating heat of at least one substrate housed in the frame, the frame being disposed on a surface of the frame that is positioned in a direction perpendicular to a rotation axis direction of the rotor. A motor is applied.
- the heat dissipation of the motor amplifier can be improved.
- FIG. 6 is a rear view of the rear cover, showing an example of the configuration of the amplifier unit.
- the front-rear direction refers to the rotational axis direction of the shaft of the rotating electrical machine
- the up-down direction refers to the vertical direction
- the left-right direction refers to the direction perpendicular to both the axial direction and the up-down direction.
- the motor 1 of this embodiment includes a motor unit 2, a brake unit 3, an encoder unit 4, and an amplifier unit 10. That is, the motor 1 is configured as an amplifier-integrated motor with a brake / encoder.
- the motor unit 2 includes a stator and a rotor (both not shown), and is a rotary type (rotary type) motor in which the rotor rotates with respect to the stator.
- the motor unit 2 outputs a rotational force by rotating the shaft SH around the axis AX.
- the “rotation axis direction” is the direction of the axis AX, and in this example, is the front-rear direction.
- the rotational output side of the motor unit 2 that is, the side where the shaft SH protrudes from the motor unit 2 (the front side in this example) is the “load side”, and the opposite side (the rear side in this example) is the “anti-load side” "
- Brake part 3 is arranged on the non-load side (rear side) of motor part 2.
- the brake unit 3 brakes the shaft SH.
- the encoder unit 4 is disposed on the anti-load side (rear side) of the brake unit 3.
- the encoder unit 4 detects the position of the shaft SH (also referred to as “rotation position” or “rotation angle”) and outputs position data representing the position.
- the amplifier unit 10 is disposed on the non-load side (rear side) of the encoder unit 4.
- the amplifier unit 10 supplies power to the motor unit 2.
- the amplifier unit 10 acquires position data from the encoder unit 4 and controls the operation of the motor unit 2 by controlling the current or voltage applied to the motor unit 2 based on the position data.
- the amplifier unit 10 obtains a host control signal from a host controller (not shown), and outputs a rotational force capable of realizing the position and the like represented by the host control signal from the shaft SH.
- the operation of the unit 2 can also be controlled.
- the configuration of the motor 1 described above is an example, and is not limited to the above configuration.
- the brake unit 3 and the encoder unit 4 may be arranged on the load side of the motor unit 2.
- the amplifier unit 10 may be disposed between the motor unit 2 and the brake unit 3 or between the brake unit 3 and the encoder unit 4.
- the motor 1 may not include the brake unit 3 and the encoder unit 4.
- the amplifier unit 10 includes a main body frame 6 (an example of a first frame), a heat dissipation frame 7 (an example of a second frame), and a heat sink 8.
- the main body frame 6 has a substantially rectangular parallelepiped shape and constitutes a casing of the amplifier unit 10.
- the main body frame 6 includes, for example, a front surface 6a and a rear surface 6b positioned in the rotation axis direction among six surfaces 6a to 6f positioned in the front-rear, left-right, and vertical directions, a right surface 6d positioned in a direction perpendicular to the rotation axis direction, and Four sides of the lower surface 6f are open.
- the connectors C61 to C64 are attached through the upper surface 6e.
- a plurality of substrates 5 a, 5 b, 5 c, 5 d, 5 e, 5 f, 5 g, 5 h are accommodated in the main body frame 6.
- the substrates 5a to 5e are arranged in such a manner that the surface directions thereof are along the rotation axis direction, and are arranged in parallel so as to be parallel to each other in a direction perpendicular to the rotation axis direction (in this example, the left-right direction). Yes.
- the substrates 5a to 5e are arranged in the order of the substrates 5a, 5b, 5c, 5d, and 5e from the right to the left.
- the substrate 5f is arranged on the upper side of the substrates 5c to 5e in a posture perpendicular to the substrates 5a to 5e (in this example, a posture in which the surface direction is perpendicular to the vertical direction).
- the substrate 5g is disposed on the rear side of the substrates 5a to 5f and 5h in a posture perpendicular to the substrates 5a to 5e (in this example, a posture in which the surface direction is perpendicular to the front-rear direction).
- the substrate 5h is disposed on the upper side of the substrate 5f in a posture parallel to the substrate 5f.
- the heat dissipating frame 7 is made of a material having high thermal conductivity such as metal (for example, aluminum), and efficiently dissipates the heat of the substrates 5b to 5e.
- the heat dissipating frame 7 includes a substantially rectangular base portion 11 attached to the lower surface 6 f of the main body frame 6, and a substrate attaching portion 12 erected on the base portion 11.
- the board mounting portion 12 includes two plate-shaped mounting plate portions 13a and 13b arranged in parallel in the left-right direction, and a top plate portion 14 connecting the upper ends of the mounting plate portions 13a and 13b. It is formed in a shape. The front side of the top plate part 14 is cut out so as to form a rectangular opening 14a. The position in the left-right direction of the board mounting portion 12 is appropriately selected depending on the board arrangement. In FIG. 2, the distance from the mounting plate portion 13a to the right end portion of the base portion 11 is the distance from the mounting plate portion 13b to the base portion 11. It is set to be larger than the distance to the left end.
- the heat dissipation frame unit 30 is inserted from the opening 6f1 of the lower surface 6f of the main body frame 6, and is fixed to the lower surface 6f by a bolt (not shown).
- the heat dissipating frame 7 is disposed on a surface positioned in a direction perpendicular to the rotation axis direction of the main body frame 6, in this example, a lower surface 6 f (an example of a first surface) positioned in the downward direction.
- the substrate 5 c is attached to the substrate attachment surface 13 a 1 which is the left side surface of the attachment plate portion 13 a, and the upper end portion protrudes upward from the opening portion 14 a of the top plate portion 14.
- the board 5c is fixed to the mounting plate portion 13a with bolts (not shown) so that the mounted electronic component Qc contacts the board mounting surface 13a1 via the insulating heat conductive sheet 16c.
- a connector Cc1 is provided at the upper end of the substrate 5c and is connected to the connector Cf2 of the substrate 5f.
- the substrate 5d is attached to the substrate attachment surface 13b1 which is the right side surface of the attachment plate portion 13b, and the upper end portion protrudes upward from the opening portion 14a of the top plate portion 14.
- the substrate 5d is fixed to the mounting plate portion 13b with bolts (not shown) so that the mounted electronic component Qd contacts the substrate mounting surface 13b1 via the insulating heat conductive sheet 16d.
- a connector Cd1 is provided at the upper end of the substrate 5d and is connected to a connector C64 to which a power cable is connected.
- the substrate 5e is attached to the substrate attachment surface 13b2 which is the left side surface of the attachment plate portion 13b, and the upper end portion protrudes upward from the top plate portion 14.
- the board 5e is fixed to the mounting plate portion 13b with bolts (not shown) so that the mounted electronic component Qe contacts the board mounting surface 13b2 via the insulating heat conductive sheet 16e.
- a connector Ce is provided at the upper end of the substrate 5e and is connected to the connector Cf5 of the substrate 5f.
- the substrate 5f is arranged above the substrates 5c to 5e.
- the connectors Cf2 and Cf4 (not shown in FIG. 3, refer to FIG. 4) and Cf5 are provided on the lower surface of the substrate 5f.
- the connectors Cf2, Cf4, Cf5 are connected to the connectors Cc1, Cd2 (not shown in FIG. 3, see FIG. 4), Ce, and supported by the boards 5c, 5d, 5e via the connectors. Thus, it is attached to the board attachment portion 12.
- a connector Cf1 is provided on the lower surface (or upper surface) of the substrate 5f, and is connected to the connector Cb1 of the substrate 5b.
- the board mounting portion 12 has a plurality of board mounting surfaces 13a1, 13b1, and 13b2, and these are in a positional relationship parallel to each other.
- the top plate portion 14 of the substrate mounting portion 12 is installed for the purpose of improving the strength, and the substrate is not mounted.
- the top plate 14 You may make it contact the part 14 via an insulating heat conductive sheet.
- the upper surface 14a of the top plate portion 14 constitutes a substrate mounting surface, and the substrate mounting surface 14a and the substrate mounting surfaces 13a1, 13b1, 13b2 are in a vertical positional relationship. In this case, the heat of a plurality of substrates having different arrangement directions can be efficiently radiated.
- the substrates 5c to 5e are fixed to the heat dissipation frame 7 with bolts.
- the substrates 5c to 5e may be fixed without using bolts by using a fixing tool such as a resin pallet.
- the heat sink unit 20 is configured by laminating a heat sink 8, a substrate 5a, a substrate 5b, an insulating heat conductive sheet 16a, a plurality of power elements 17 (an example of a switching element), and a resin support 18. ing.
- the heat sink 8 includes a substantially rectangular base portion 8a and a plurality of fins 8b erected on the right side surface of the base portion 8a.
- the plurality of fins 8b are arranged in parallel in the vertical direction, and each fin 8b extends along the front-rear direction.
- the heat sink 8 may be configured without the fins 8b.
- a “heat sink” includes a heat dissipating component having only fins and having only a base portion.
- each power element 17 has an element body 17a and a plurality of lead terminals 17b.
- the element main body 17 a is accommodated in a hole 18 a provided in the resin support 18. Since the hole 18a is used for mounting positioning of the power element, it may be a recess instead of the hole.
- the lead terminal 17b is connected to a terminal hole (not shown) of the substrate 5a by soldering.
- the substrate 5a is fixed to the heat sink 8 by sandwiching the resin support 18 and the insulating heat conductive sheet 16a with a plurality of screws S1.
- the screw S1 is inserted into a plurality of through holes 5a1 provided in the peripheral portion of the substrate 5a and fastened to a plurality of screw holes (not shown) of the base portion 8a of the heat sink 8.
- substrate 5a presses the power element 17 via the resin support 18, and the element main-body part 17a of the power element 17 is press-contacted to the base part 8a via the heat conductive sheet 16a.
- the substrate 5a and the substrate 5b are mechanically connected by a connector (not shown) and electrically connected by a plurality of pin terminals P (not shown in FIG. 2).
- the heat sink 8 As described above, the heat sink 8, the heat conductive sheet 16 a, the plurality of power elements 17, the resin support 18, the substrate 5 a, and the substrate 5 b are assembled as the heat sink unit 20.
- the assembled heat sink unit 20 is inserted from an opening 6d1 having a step on the right surface 6d of the main body frame 6, and at least a part of the base 8a of the heat sink 8 is accommodated in the opening 6d1. In this state, it is fixed to the right surface 6d by a bolt (not shown). As a result, the heat sink 8 is disposed on a surface different from the lower surface 6f of the main body frame 6, that is, the right surface 6d (an example of the second surface) in this example.
- the substrate 5b of the heat sink unit 20 fixed to the main body frame 6 has a mounted electronic component Qb on the right side of the mounting plate portion 13a of the heat dissipation frame 7 via an insulating heat conductive sheet 16b. It is in contact with the substrate mounting surface 13a2, which is a surface.
- a connector Cb1 is provided at the upper end of the substrate 5b and is connected to the connector Cf1 of the substrate 5f.
- the substrate 5g is inserted from the opening 6b1 of the rear surface 6b of the main body frame 6, and is fixed to the main body frame 6 by bolts (not shown) on the rear side of the heat sink unit 20 and the heat dissipation frame unit 30.
- the board 5g is provided with connectors Cg1 and Cg2 (see FIG. 4), and is connected to the connector Cp (see FIG. 4) of the board 5a and the connector Cd3 (see FIG. 4) of the board 5d.
- the rear cover 24 is fixed to the opening 6b1 of the main body frame 6 with a bolt (not shown), and the opening 6b1 is closed.
- the substrate 5h is fixed to the inner surface of the upper surface 6e of the main body frame 6 by a bolt (not shown) via a spacer 26.
- the substrate 5h is arranged in parallel so that at least a part thereof faces the base portion 11 of the heat dissipation frame 7 and the substrate 5f.
- the board 5h is provided with inserts Ch1, Ch2 and the like of the connectors C61 and C62 on the upper surface, and is mounted on the housings Ch11 and Ch22 and the like corresponding to the inserts on the upper surface 6e of the main body frame 6.
- a connector Ch3 (not shown in FIG. 3, refer to FIG. 4) is provided on the lower surface of the substrate 5h, and is connected to a connector Cf6 (not illustrated in FIG. 3, refer to FIG. 4) of the substrate 5f.
- the amplifier unit 10 converts DC power input from a main power supply (not shown) into AC power (three-phase AC power in this example) and supplies the AC power to the motor unit 2.
- the board 5d is a DC input board provided with components constituting the DC input circuit 50d.
- the substrate 5d is appropriately referred to as a “DC input substrate 5d”.
- the DC input board 5d is provided with three connectors Cd1, Cd2, and Cd3.
- the DC input circuit 50d receives DC power from the main power supply.
- the board 5g is a power wiring board provided with a high voltage wiring for supplying DC power input from the DC input circuit 50d to an inverter circuit 50a of the power board 5a described later.
- the substrate 5g is appropriately referred to as a “power wiring substrate 5g”.
- Connectors Cg1, Cg2, Cg3, and Cg4 are provided on the power wiring board 5g.
- the substrate 5a is a power substrate provided with components including a plurality of power elements 17 constituting an inverter circuit 50a (an example of a power conversion circuit).
- the substrate 5a is appropriately referred to as “power substrate 5a”.
- the power board 5a is provided with a plurality of pin terminals P (see FIG. 3).
- the power board 5a is connected to the DC input board 5d through the power system wiring board 5g, and is connected to the motor unit 2 through the power cable EC1.
- the inverter circuit 50a converts the DC power input from the DC input circuit 50d through the power wiring board 5g into three-phase AC power by the power element 17 and the like, and supplies it to the motor unit 2 through the power cable EC1.
- the substrate 5b is a gate substrate provided with components constituting the gate circuit 50b (an example of a drive circuit).
- the substrate 5b is appropriately referred to as a “gate substrate 5b”.
- a connector Cb1 is provided on the gate substrate 5b (see also FIG. 3).
- the gate circuit 50b outputs a gate signal to the inverter circuit 50a to control driving of the power element 17.
- the board 5e is a control board provided with components constituting the control circuit 50e.
- the substrate 5e is appropriately referred to as a “control substrate 5e”.
- a connector Ce is provided on the control board 5e (see also FIG. 3).
- the control circuit 50e controls the main circuit via the gate substrate 5b. Further, the control circuit 50 e receives position data from the encoder unit 4.
- the substrate 5c is a power supply substrate provided with components constituting the power supply circuit 50c.
- the substrate 5c is appropriately referred to as a “power supply substrate 5c”.
- Connectors Cc1 and Cc2 are provided on the power supply board 5c (see also FIG. 3).
- the power supply circuit 50c generates control power from a power supply (not shown) supplied from the outside and supplies the power to the gate circuit 50b, the control circuit 50e, and the like.
- the substrate 5h is a connector receiving substrate that is electrically connected to the connectors C61 to C63 of the main body frame 6.
- the board 5h is appropriately referred to as a “connector receiving board 5h”.
- a connector Ch3 is provided on the connector receiving substrate 5h.
- the connector C64 of the main body frame 6 to which the power cable is connected is connected to the connector Cd1 of the DC input board 5d without going through the connector receiving board 5h.
- the control system wiring board 5f is provided with a plurality of connectors including connectors Cf1, Cf2, Cf4, Cf5, and Cf6 (see also FIG. 3).
- the connector Cb1 is connected to the connector Cf1 of the control system wiring substrate 5f.
- the connector Cc1 is connected to the connector Cf2 of the control system wiring board 5f.
- the DC input board 5d has the connector Cd2 connected to the connector Cf4 of the control system wiring board 5f, and the connector Cd3 connected to the connector Cg1 of the power system wiring board 5g.
- the control board 5e has the connector Ce connected to the connector Cf5 of the control system wiring board 5f.
- the connector Ch3 is connected to the connector Cf6 of the control system wiring board 5f.
- the gate substrate 5b and the control substrate 5e, the power supply substrate 5c and the control substrate 5e, the DC input substrate 5d and the control substrate 5e, the connector receiving substrate 5h and the control substrate 5e are electrically connected via the control system wiring substrate 5f, respectively. It is connected. Further, the gate substrate 5b and the power supply substrate 5c are electrically connected via the power wiring substrate 5g.
- the types of the substrates 5a to 5h and the like described above and the connection relations between the substrates are examples, and the content may be other than the above.
- the power supply board 5c, the DC input board 5d to the heat dissipation frame 7, and the control A substrate assembling step of the substrate 5e and the control system wiring substrate 5f and a substrate assembling step of the power substrate 5a and the gate substrate 5b to the heat sink 8 are performed.
- the power supply substrate 5 c is attached to the substrate attachment surface 13 a 1 of the attachment plate portion 13 a of the substrate attachment portion 12 of the heat dissipation frame 7 via the insulating heat conductive sheet 16 c.
- the DC input board 5d is attached to the board attachment surface 13b1 of the attachment plate portion 13b of the heat dissipating frame 7 via an insulating heat conductive sheet 16d.
- the control board 5e is attached to the board attachment surface 13b2 of the attachment plate portion 13b via an insulating heat conductive sheet 16e.
- control system wiring board 5f is disposed above the power supply board 5c, the DC input board 5d, and the control board 5e, and the connectors Cc1, Cd2, and Ce of the boards 5c, 5d, and 5e are connected to the connector Cf2 of the control system wiring board 5f. Connected to Cf4 and Cf5, respectively. Thereby, the heat dissipation frame unit 30 is completed.
- the power element 17 is accommodated in the hole 18a of the resin support 18, and the lead terminal 17b of the power element 17 is inserted into the terminal hole of the power board 5a and connected by solder or the like.
- the power board 5a on which the power element 17 is mounted is fixed to the base portion 8a of the heat sink 8 with the resin support 18 and the insulating heat conductive sheet 16a interposed therebetween by screws S1. Thereafter, the gate substrate 5b is attached to the power substrate 5a, and the heat sink unit 20 is completed.
- the connector receiving board 5 h is inserted into the main body frame 6 and assembled to the main body frame 6.
- the inserts Ch1, Ch2, etc. are mounted on the housings Ch11, Ch22, etc. on the upper surface 6e of the main body frame 6, and are fixed to the inner surface side of the upper surface 6e with bolts via the spacers 26.
- the heat dissipation frame unit 30 is assembled to the main body frame 6. That is, the base portion 11 of the heat dissipating frame 7 is fixed to the opening 6f1 of the lower surface 6f of the main body frame 6 with a bolt. Thereby, the heat dissipation frame 7 is arranged on the lower surface 6 f of the main body frame 6.
- the heat sink unit 20 is assembled to the main body frame 6. That is, the base portion 8a of the heat sink 8 is fixed to the opening 6d1 of the right surface 6d of the main body frame 6 with a bolt. At this time, the gate substrate 5b is brought into contact with the substrate mounting surface 13a2 of the mounting plate portion 13a of the main body frame 6 through the insulating heat conductive sheet 16b. Further, the connector Cb1 of the gate substrate 5b is connected to the connector Cf1 of the control system wiring substrate 5f.
- the power wiring board 5g is inserted from the opening 6b1 on the rear surface 6b of the main body frame 6 and fixed to the main body frame 6 with bolts. At this time, the connectors Cg1 and Cg2 of the power wiring board 5g are connected to the connector Cd3 of the DC input board 5d and the connector Cp of the power board 5a.
- the rear cover 24 is assembled so as to close the opening 6b1 of the rear surface 6b of the main body frame 6. Thereby, the amplifier unit 10 is completed.
- the amplifier unit 10 is assembled on the non-load side of the encoder unit 4. Thereby, the motor 1 having the motor unit 2, the brake unit 3, the encoder unit 4, and the amplifier unit 10 is completed.
- each process by the manufacturing method of the motor 1 demonstrated above is automatically performed by one or more manufacturing apparatuses. However, some of the steps may be performed manually.
- the manufacturing process of the motor 1 described above is an example, and processes other than the above may be included, or some of the above processes may be omitted. Further, the order of the above steps may be changed as appropriate. For example, the assembly order of the heat dissipation frame unit 30 and the assembly order of the heat sink unit 20 may be reversed.
- the left surface 6c, the right surface 6d, the upper surface 6e, and the lower surface 6f of the main body frame 6 correspond to an example of a surface positioned in a direction perpendicular to the rotation axis direction of the rotor in the frame, and the heat dissipation frame 7 and the heat sink 8 are This corresponds to an example of means for dissipating heat from at least one substrate accommodated in the frame.
- the amplifier unit 10 is provided on the main body frame 6 constituting the casing of the amplifier unit 10 and the lower surface 6f positioned in the direction perpendicular to the rotation axis direction of the main body frame 6. And a heat dissipating frame 7 to which substrates 5c, 5d, 5e, 5f to be accommodated in the main body frame 6 are attached. Thereby, there exists the following effect.
- the heat dissipating frame 7 to which the substrates 5c to 5f are attached is configured as a separate frame from the main body frame 6 that constitutes the casing of the amplifier unit 10.
- the structure of the heat dissipation frame 7 can be optimized in terms of heat dissipation, so that the heat of the substrates 5c to 5e can be efficiently transferred to the heat dissipation frame 7 for heat dissipation. Therefore, the heat dissipation of the amplifier unit 10 can be enhanced.
- the heat dissipating frame 7 is disposed on a surface (lower surface 6f) located in the direction perpendicular to the rotation axis direction of the main body frame 6.
- the heat radiating surface is limited to one direction (rear), whereas in the present embodiment, the heat radiating surface is viewed from a plurality of directions such as up, down, left, and right. You can select the direction. Therefore, the degree of freedom in design can be improved.
- the amplifier unit 10 is disposed on the right surface 6d different from the lower surface 6f of the main body frame 6, and is accommodated in the main body frame 6 and mounted with substrates 5a and 5b different from the substrates 5c to 5f. 8 has. Thereby, there exists the following effect.
- the heat radiation frame 7 disposed on the lower surface 6f of the main body frame 6 and the heat sink 8 disposed on the right surface 6d allow the heat of the power elements 17 serving as the substrates and the heat generating components to be radiated in a plurality of different directions. Heat can be radiated from the surface. That is, the heat of the substrates 5b to 5e can be radiated downward via the heat radiating frame 7, and the heat of the power element 17 can be radiated rightward via the heat sink 8. Therefore, the heat dissipation of the amplifier unit 10 can be further improved.
- the amplifier unit 10 includes connectors C61, C62, C63, and C64 disposed on the upper surface 6e different from the lower surface 6f and the right surface 6d of the main body frame 6.
- various cables can be connected via the connectors C61 to C64 on the surfaces other than the heat dissipation surface of the main body frame 6 of the amplifier unit 10 without impeding heat dissipation. Can connect.
- the heat dissipating frame 7 has a base portion 11 attached to the lower surface 6f of the main body frame 6, and a substrate attaching portion 12 that is erected on the base portion 11 and to which the substrates 5c to 5f are attached.
- the board mounting portion 12 has a plurality of board mounting surfaces 13a1, 13b1, and 13b2.
- the plurality of substrates 5c to 5e can be attached to the heat dissipation frame 7, the heat of the plurality of substrates 5c to 5e can be efficiently radiated.
- the fixing structure of the substrates 5c to 5e can be made firm and the reliability of the connection between the substrates 5c to 5e can be improved.
- the assembly of the motor can be improved by unitizing a plurality of substrates.
- the plurality of board mounting surfaces 13a1, 13b1, 13b2 of the board mounting part 12 are parallel to each other.
- substrate can be attached to both front and back both with respect to each of plate-shaped attachment board part 13a, 13b, more substrates can be efficiently attached to the thermal radiation frame 7.
- the substrates 5c to 5e attached to the substrate attachment portion 12 are arranged parallel to each other along the rotation axis direction, the influence on the heat radiation area when the motor 1 is reduced in the radial direction is reduced. And further downsizing is possible.
- the amplifier unit 10 is housed in the main body frame 6 and includes a connector receiving board 5h to which the connectors C61, C62 and the like are electrically connected. At least a part of the connector receiving board 5h is included. It arrange
- the connection between the various cables connected to the connectors C61, C62, etc. and the control board 5e, etc. of the amplifier unit 10 can be a connector connection instead of a lead wire.
- the inside of the portion 10 can be reduced in wiring and the assemblability can be improved.
- the heat dissipating frame 7 is inserted in a direction facing the connector receiving board 5h when the motor is assembled.
- the connection between the connector receiving board 5h and the control system wiring board 5f attached to the heat dissipating frame 7 can be a connector connection instead of a lead wire, which also improves wiring saving and assembly. it can.
- the amplifier unit 10 includes a power substrate 5a on which a plurality of power elements 17 constituting the inverter circuit 50a is disposed, and a gate substrate on which a gate circuit 50b for driving the plurality of power elements 17 is disposed. 5b, and the power substrate 5a and the gate substrate 5b are disposed between the heat sink 8 and the substrate attachment portion 12 of the heat dissipating frame 7.
- the power element 17 having a relatively large amount of heat generation can be efficiently cooled by the heat sink 8 and the gate substrate 5b can be efficiently cooled by the heat dissipating frame 7.
- the amplifier unit 10 includes an insulating heat conductive sheet 16b disposed between the gate substrate 5b and the substrate mounting portion 12, and the gate substrate 5b is formed of the heat conductive sheet 16b. It arrange
- the heat of the gate substrate 5b can be efficiently radiated while ensuring the insulation between the gate substrate 5b and the substrate mounting portion 12.
- the method for manufacturing the motor 1 of the present embodiment includes attaching the power supply board 5c, the DC input board 5d, the control board 5e, and the control system wiring board 5f accommodated in the main body frame 6 to the heat dissipation frame 7, and the board 5c to The heat dissipating frame 7 to which 5f is attached is attached to the lower surface 6f of the main body frame 6 positioned in the direction perpendicular to the rotation axis direction.
- the power supply board 5c, the DC input board 5d, the control board 5e, and the control system wiring board 5f attached to the heat dissipation frame 7 can be assembled to the main body frame 6 at once, assembly work can be facilitated.
- the substrates 5c to 5f to the heat dissipation frame 7 it is possible to connect the necessary connectors between the substrates in advance or to secure the necessary inter-substrate distance (insulation distance) in advance. Assembling work can be facilitated. Therefore, the assembly property of the motor 1 can be improved.
- the power substrate 5a and the gate substrate 5b accommodated in the main body frame 6 are attached to the heat sink 8, and the heat sink 8 to which the substrates 5a and 5b are attached is attached to the main body frame 6. Attaching to the right surface 6d.
- the power substrate 5a and the gate substrate 5b attached to the heat sink 8 can be assembled to the main body frame 6 at once, assembly work can be facilitated.
- the substrates 5a and 5b to the heat sink 8 it is possible to perform necessary connector connection between the substrates in advance, or to secure and attach the necessary inter-substrate distance (insulation distance) in advance. Assembly work can be facilitated. Therefore, the assembly property of the motor 1 can be improved.
- FIG. 6 is a schematic diagram showing the configuration of the heat dissipation frame 7 according to the embodiment. For comparison with the modifications shown in FIG. 7 and subsequent figures, first, the configuration of the heat dissipation frame 7 will be described.
- the heat dissipating frame 7 has a base portion 11 and a substrate mounting portion 12 erected on the base portion 11.
- the board attaching part 12 has two attaching plate parts 13a and 13b arranged in parallel in the left-right direction, and a top plate part 14 connecting the upper ends of the attaching plate parts 13a and 13b.
- An opening 14 a is formed on the front side of the top plate portion 14.
- the power substrate 5a is disposed near the heat sink 8
- the gate substrate 5b is disposed near the right side of the mounting plate portion 13a
- the power supply substrate 5c is disposed near the left side of the mounting plate portion 13a
- the DC input substrate 5d is mounted on the mounting plate portion 13b.
- the control board 5e is arranged in the vicinity of the left side of the mounting plate portion 13b.
- the heat of the power board 5a (heat of the power element 17; the same applies hereinafter) is radiated from the heat sink 8.
- the heat of the gate substrate 5 b and the power supply substrate 5 c is transmitted to the mounting plate portion 13 a and is radiated from the base portion 11.
- the heat of the DC input board 5d and the control board 5e is transmitted to the mounting plate part 13b and radiated from the base part 11.
- FIG. 7 is a schematic diagram illustrating a first modification of the heat dissipation frame.
- the board mounting portion 12 has a base between the mounting plate portion 13 a and the heat sink 8 in addition to the mounting plate portions 13 a and 13 b and the top plate portion 14. It further has a plate-like mounting plate portion 15 a erected on the portion 11.
- the power substrate 5a is disposed between the attachment plate portion 15a and the heat sink 8, and the gate substrate 5b is disposed between the attachment plate portion 15a and the attachment plate portion 13a.
- the other structure of the heat dissipation frame 7a is the same as that of the heat dissipation frame 7 of FIG.
- the heat of the power board 5a is dissipated from the heat sink 8, is transmitted to the mounting plate 15a, and is dissipated from the base 11.
- the heat of the gate substrate 5 b is transmitted to the mounting plate portions 13 a and 15 a and is radiated from the base portion 11.
- the heat dissipation of the power supply board 5c, the DC input board 5d, and the control board 5e is the same as that of the heat dissipation frame 7 of FIG.
- route is an example and you may arrange
- the first modified example (the same applies to the second, third, fifth, and seventh modified examples described later) is a case where a substrate other than the substrates 5a to 5e is added by adding a function, for example, or a power substrate, for example. This is effective when a heat generating part such as an RC snubber circuit is added to 5a to increase the heat generation amount.
- the number of mounting plate portions may be changed according to the number of substrates, the amount of heat generation, and the like.
- FIG. 8 is a schematic diagram illustrating a second modification of the heat dissipation frame.
- the board mounting portion 12 has a base between the mounting plate portion 13a and the heat sink 8 in addition to the mounting plate portions 13a and 13b and the top plate portion 14. It further has two mounting plate parts 15b and 15c erected on the part 11.
- the power substrate 5a is disposed between the attachment plate portion 15c and the heat sink 8
- the gate substrate 5b is disposed between the attachment plate portion 15b and the attachment plate portion 13a.
- the other structure of the heat dissipation frame 7b is the same as that of the heat dissipation frame 7 of FIG.
- the heat of the power board 5a is dissipated from the heat sink 8, and is transmitted to the mounting plate 15c, and is dissipated from the base 11.
- the heat of the gate substrate 5 b is transmitted to the mounting plate portions 13 a and 15 b and is radiated from the base portion 11.
- the heat dissipation of the power supply board 5c, the DC input board 5d, and the control board 5e is the same as that of the heat dissipation frame 7 of FIG.
- route is an example and you may arrange
- FIG. 9 is a schematic diagram illustrating a third modification of the heat dissipation frame.
- the heat radiating frame 7c of the third modified example is provided with a mounting plate portion 15b ′ whose length in the vertical direction is shortened instead of the mounting plate portion 15b of the heat radiating frame 7b in FIG. Yes.
- the other structure of the heat dissipation frame 7c is the same as that of the heat dissipation frame 7b of FIG.
- the heat dissipation path of each substrate in the third modification is the same as that in the second modification.
- the third modification is effective, for example, when a heat-generating component is mounted on the lower part of the right surface of the gate substrate 5b, and the heat dissipating frame 7c can be configured to the minimum necessary. In this way, the length of each mounting plate portion may be changed according to the position of the heat generating component on the substrate, the amount of heat generation, and the like.
- FIG. 10 is a schematic diagram illustrating a fourth modification of the heat dissipation frame. As shown in FIG. 10, in the heat dissipation frame 7d of the fourth modified example, the top plate portion 14 of the heat dissipation frame 7 of FIG. 6 is removed. The other structure of the heat dissipation frame 7d is the same as that of the heat dissipation frame 7 of FIG.
- the heat dissipation path of each substrate in the fourth modification is the same as that of the heat dissipation frame 7 in FIG.
- FIG. 11 is a schematic diagram illustrating a fifth modification of the heat dissipation frame.
- the top plate portion 14 of the heat radiating frame 7 a in FIG. 6 is removed and the board mounting portion 12 is between the mounting plate portion 13 a and the heat sink 8. Further includes a mounting plate portion 15a.
- the other structure of the heat dissipation frame 7e is the same as that of the heat dissipation frame 7 of FIG.
- the heat dissipation path of each substrate in the fifth modification is the same as that of the heat dissipation frame 7a in FIG.
- FIG. 12 is a schematic diagram illustrating a sixth modification of the heat dissipation frame. As shown in FIG. 12, in the heat radiating frame 7f of the sixth modified example, the mounting plate portion 13a and the top plate portion 14 of the heat radiating frame 7 in FIG. 6 are removed. The other configuration of the heat dissipation frame 7f is the same as that of the heat dissipation frame 7 of FIG.
- the gate substrate 5b and the power supply substrate 5c are not radiated by the radiating frame 7f.
- the heat radiation of the power board 5a, the DC input board 5d, and the control board 5e is the same as that of the heat radiation frame 7 of FIG. Therefore, it is effective when the heat generation amount of the gate substrate 5b and the power supply substrate 5c is small, and the heat dissipation frame 7f can be reduced in size and weight.
- the position of the mounting plate portion 13b of the heat dissipating frame 7f is not limited to the position between the DC input board 5d and the control board 5e, but can be selected as appropriate.
- FIG. 13 is a schematic diagram illustrating a seventh modification of the heat dissipation frame.
- the mounting plate portions 13a ′ and 13b whose length in the vertical direction is shortened. 'Is provided.
- the mounting plate portion 13b ′ is shorter in the vertical direction than the mounting plate portion 13a ′.
- the other configuration of the heat dissipation frame 7g is the same as that of the heat dissipation frame 7e of FIG.
- the heat dissipation path of each substrate in the seventh modification is the same as that in the fifth modification shown in FIG.
- heat generating components are mounted on the lower surface of the left surface of the gate substrate 5b, the right surface of the power supply substrate 5c, the left surface of the DC input substrate 5d, and the right surface of the control substrate 5e. This is effective in the case where the heat radiating frame 7g is used. In this way, the length of each mounting plate portion may be changed according to the position of the heat generating component on the substrate, the amount of heat generation, and the like.
- FIG. 14 is a schematic diagram illustrating an eighth modification of the heat dissipation frame. As shown in FIG. 14, in the heat radiating frame 7h of the eighth modified example, two top plates 14b and 14c divided into right and left are provided instead of the top plate 14 of the heat radiating frame 7 in FIG. Yes. The other configuration of the heat dissipation frame 7h is the same as that of the heat dissipation frame 7 of FIG.
- the heat dissipation path of each substrate in the eighth modification is the same as that of the heat dissipation frame 7 in FIG.
- the top plate portions 14b and 14c can also be used as a board mounting surface such as the control system wiring board 5f.
- FIG. 15 is a schematic diagram illustrating a ninth modification of the heat dissipation frame.
- the mounting plate portion 13 a of the heat radiating frame 7 in FIG. 6 is not erected on the base portion 11, and is screwed to the right end portion of the top plate portion 14. It is attached.
- the heat dissipating frame 7i is composed of two parts: a base part 11 formed integrally, a part of the mounting plate part 13b and the top plate part 14 standing on the base part 11, and a mounting plate part 13a. Yes.
- the heat dissipating frame may be composed of a plurality of parts by a configuration other than the above.
- the base portion 11, the mounting plate portion 13b, the top plate portion 14, and the mounting plate portion 13a may be separate components.
- the heat dissipation path of each substrate in the ninth modification is the same as that of the heat dissipation frame 7 in FIG.
- FIG. 16 is a schematic diagram showing the configuration of the heat sink unit 20 according to the embodiment. For comparison with the modification shown in FIGS. 17 and 18, the configuration of the heat sink unit 20 will be described first.
- the heat sink unit 20 includes a power substrate 5a, a resin support 18, a plurality of power elements 17, an insulating heat conductive sheet 16a, and a heat sink 8.
- a power substrate 5a By fixing the power substrate 5a to the heat sink 8 with a plurality of bolts, the power element 17 accommodated in the resin support 18 is pressed against the heat sink 8 via the heat conductive sheet 16a.
- FIG. 17 is a schematic diagram illustrating an example of the configuration of the heat sink unit 20A of the present modification.
- a frame 22 connected to the heat sink 8 is added.
- the frame 22 is formed in a substantially L shape when viewed from the front-rear direction, and includes a frame portion 22a and a frame portion 22b provided integrally with the lower end of the frame portion 22a.
- the frame portion 22b is fixed to the heat sink 8 with screws (not shown).
- the frame portion 22a is made of a material having high thermal conductivity such as metal (for example, aluminum) and contacts the left surface of the power substrate 5a.
- metal for example, aluminum
- This modification is effective, for example, when a heat generating component such as an RC snubber circuit is added to the power board 5a to increase the heat generation amount.
- a frame may be added to the heat sink unit as appropriate according to the amount of heat generated.
- the power element 17 is configured to be connected to the power substrate 5 a by the lead terminal 17 b, and therefore the power element 17 is pressed against the heat sink 8 by the resin support 18. ing.
- This modification corresponds to the case where the power element 17 is a surface-mounted power element that is directly mounted on the power substrate 5a.
- FIG. 18 is a schematic diagram showing an example of the configuration of the heat sink unit 20B of this modification.
- a surface mount type power element 17 is disposed on the surface of the power substrate 5a on the heat sink 8 side.
- the resin support 18 is disposed on the opposite side to the heat sink 8 of the power board 5a, and is fixed to the heat sink 8 so as to sandwich the power board 5a and the heat conductive sheet 16a with screws (not shown).
- the entire power board 5a can be uniformly pressed against the heat sink 8 by the resin support 18. As a result, it is possible to prevent local stress from being generated on the power substrate 5a, so that deformation (bending, etc.) of the power substrate 5a and stress on the mounted components can be prevented.
- the heat dissipating frame 7 is disposed below the main body frame 6, the heat sink 8 is disposed on the right side, and the connectors C61 to C64 are disposed on the upper side. It is possible. Variations in the positional relationship will be described with reference to FIGS. In FIG. 19 to FIG. 22, illustrations of the components other than the main body frame 6, the heat dissipation frame 7, the heat sink unit 20, the connectors C61 and C62, the connector receiving board 5h, and the like are omitted.
- FIG. 19 is a schematic diagram showing the positional relationship of each component in the amplifier unit 10 according to the embodiment. For comparison with the modifications shown in FIG. 20 and subsequent figures, the arrangement configuration of the amplifier unit 10 will be described first.
- the main body frame 6 is provided with a connector receiving board 5h on the inner surface side of the upper surface 6e.
- the connector receiving board 5h is connected to connectors C61, C62 and the like provided on the upper surface 6e of the main body frame 6.
- the heat dissipating frame 7 is provided with substrates 5c to 5f, and the heat dissipating frame unit 30 is assembled to the lower surface 6f of the main body frame 6.
- the substrates 5c to 5f are not shown (the same applies to FIGS. 20 to 22 described later).
- the heat sink 8 has substrates 5 a and 5 b attached thereto, and is assembled as a heat sink unit 20 on the right surface 6 d of the main body frame 6.
- the connectors C61, C62 and the like are disposed on the upper surface 6e, the heat dissipating frame 7 is disposed on the lower surface 6f, and the heat sink 8 is disposed on the right surface 6d.
- FIG. 20 is a schematic diagram illustrating a first modification of the positional relationship.
- a connector receiving board 5h1 having a substantially L shape when viewed from the front-rear direction is accommodated in the main body frame 6.
- the connector receiving substrate 5h1 is disposed so as to face the substrate portion 5ha along the inner surface side of the upper surface 6e of the main body frame 6 and the base portion 11 of the heat dissipation frame 7, and extends along the inner surface side of the right surface 6d of the main body frame 6.
- a substrate portion 5hb The board portion 5ha is connected to the connectors C61, C62 and the like on the upper surface 6e.
- the main body frame 6 has at least a left surface 6c and a lower surface 6f open.
- the heat radiating frame unit 30 is assembled to the left surface 6c with respect to the main body frame 6, and the heat radiating frame 7 is disposed on the left surface 6c. Further, the heat sink unit 20 is assembled to the lower surface 6f with respect to the main body frame 6, and the heat sink 8 is disposed on the lower surface 6f.
- the connector receiving board 5h1 is formed in an appropriate shape (in this example, substantially L-shaped), thereby maintaining the opposing arrangement relationship between the connector receiving board 5h1 (board portion 5hb) and the heat dissipation frame 7. Meanwhile, the positional relationship of the heat dissipation frame 7, the heat sink 8, the connectors C61, C62, and the like can be changed.
- FIG. 21 is a schematic diagram illustrating a second modification of the positional relationship.
- a connector receiving board 5h2 having a substantially L shape when viewed from the front-rear direction is accommodated in the main body frame 6.
- the connector receiving substrate 5h2 is disposed so as to face the substrate portion 5ha along the inner surface side of the upper surface 6e of the main body frame 6 and the base portion 11 of the heat dissipating frame 7, and along the inner surface side of the left surface 6c of the main body frame 6.
- a substrate portion 5hc is connected to the connectors C61, C62 and the like on the upper surface 6e.
- the main body frame 6 has at least a right surface 6d and a lower surface 6f opened. Further, the heat dissipating frame 7 (heat dissipating frame unit 30) has a structure in which the heat dissipating frame 7 (heat dissipating frame unit 30) shown in FIG.
- the heat radiating frame unit 30 is assembled to the right surface 6d with respect to the main body frame 6, and the heat radiating frame 7 is disposed on the right surface 6d. Further, the heat sink unit 20 is assembled to the lower surface 6f with respect to the main body frame 6, and the heat sink 8 is disposed on the lower surface 6f.
- the positional relationship of the heat dissipation frame 7, the heat sink 8, the connectors C61, C62, etc. can be changed while maintaining the opposing relationship of the connector receiving substrate 5h2 (substrate portion 5hc) and the heat dissipation frame 7. it can.
- the arrangement relationship between the heat dissipating frame unit 30 and the heat sink unit 20 is opposite to the arrangement relationship shown in FIG. 19 and FIG. The same applies to FIG. 22 described later).
- FIG. 22 is a schematic diagram illustrating a third modification of the positional relationship.
- the heat dissipation frame 7 (heat dissipation frame unit 30) has a configuration in which the heat dissipation frame 7 (heat dissipation frame unit 30) illustrated in FIG. 19 is inverted in the left-right direction.
- the connector receiving board 5h is arranged in the same manner as in FIG.
- the main body frame 6 has at least a left surface 6c and a lower surface 6f open.
- the heat radiating frame unit 30 is assembled to the lower surface 6f with respect to the main body frame 6, and the heat radiating frame 7 is disposed on the lower surface 6f. Further, the heat sink unit 20 is assembled to the left surface 6c with respect to the main body frame 6, and the heat sink 8 is disposed on the left surface 6c.
- the positional relationship of the heat dissipation frame 7, the heat sink 8, the connectors C61, C62, and the like can be changed while maintaining the opposing relationship between the connector receiving substrate 5h and the heat dissipation frame 7.
- the following effects are obtained. That is, for example, in the installation environment of the motor 1, it is preferable that a sufficient heat radiation space is secured in the direction in which the heat sink 8 and the heat radiation frame 7 are arranged. Further, it is preferable to arrange the connectors C61 to C64 in accordance with the installation environment of the motor 1 and the user's cable routing needs.
- the amplifier unit 10A (10B, 10C) is configured to be able to change the positional relationship of the heat dissipating frame 7, the heat sink 8, and the connectors C61 to C64 in the main body frame 6, thereby meeting the installation environment and needs.
- the positional relationship between them can be selected accordingly.
- the motor which can respond flexibly to installation environment and needs is realizable.
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Abstract
Description
まず、図1を参照しつつ、実施形態に係るモータの概略構成の一例について説明する。
次に、図2~図4を参照しつつ、アンプ部10の構成の一例について説明する。
図2及び図3に示すように、本体フレーム6の内部には、複数の基板5a,5b,5c,5d,5e、5f,5g,5hが収容されている。基板5a~5eは、各々の面方向が回転軸方向に沿う姿勢で配置されており、且つ、回転軸方向に垂直な方向(この例では左右方向)に互いに平行となるように並設されている。基板5a~5eは、右方から左方に向けて、基板5a,5b,5c,5d,5eの順に配置されている。
図2に示すように、基板5c~5fは放熱フレーム7に取り付けられ、放熱フレームユニット30として本体フレーム6に組み付けられている。放熱フレーム7は、金属(例えばアルミ)等の熱伝導性の高い材料で構成されており、基板5b~5eの熱を効率良く放熱する。放熱フレーム7は、本体フレーム6の下面6fに取り付けられる略矩形状のベース部11と、ベース部11に立設された基板取付部12とを有する。基板取付部12は、左右方向に平行に並設された板状の2つの取付板部13a,13bと、取付板部13a,13bの上端間を繋ぐ天板部14とを有し、枠体状に形成されている。天板部14の前側は、矩形の開口部14aを形成するように切り欠かれている。基板取付部12の左右方向の位置は、基板配置によって適宜選択されるものであるが、図2では取付板部13aからベース部11の右端部までの距離が取付板部13bからベース部11の左端部までの距離よりも大きくなるように設定されている。
図2及び図3に示すように、基板5a,5bはヒートシンク8に取り付けられ、ヒートシンクユニット20として本体フレーム6に組み付けられている。
図2に示すように、基板5gは、本体フレーム6の後面6bの開口部6b1より挿入され、ヒートシンクユニット20及び放熱フレームユニット30の後側で、図示しないボルトにより本体フレーム6に固定される。基板5gにはコネクタCg1,Cg2(図4参照)が設けられており、基板5aのコネクタCp(図4参照)及び基板5dのコネクタCd3(図4参照)と接続されている。本体フレーム6の開口部6b1には、リアカバー24が図示しないボルトにより固定され、開口部6b1が塞がれる。
次に、図4を参照しつつ、基板5a~5hの具体例及び各基板の接続関係の一例について説明する。
次に、図5を参照しつつ、モータ1の製造方法の一例について説明する。
以上説明したように、本実施形態のモータ1では、アンプ部10が、アンプ部10の筐体を構成する本体フレーム6と、本体フレーム6における回転軸方向に垂直な方向に位置する下面6fに配置され、本体フレーム6に収容される基板5c,5d,5e,5fが取り付けられた放熱フレーム7とを有する。これにより、次の効果を奏する。
なお、開示の実施形態は、上記に限られるものではなく、その趣旨及び技術的思想を逸脱しない範囲内で種々の変形が可能である。以下、そのような変形例を説明する。
図6~図15を参照しつつ、放熱フレーム7の構成のバリエーションについて説明する。なお、図6~図15では、放熱フレーム7等、ヒートシンク8、及び基板5a~5e以外の構成については図示を省略している。
図7は、放熱フレームの第1の変形例を表す模式図である。図7に示すように、第1の変形例の放熱フレーム7aでは、基板取付部12が、取付板部13a,13bと天板部14に加えて、取付板部13aとヒートシンク8の間にベース部11に立設された板状の取付板部15aをさらに有する。パワー基板5aは取付板部15aとヒートシンク8の間に配置され、ゲート基板5bは取付板部15aと取付板部13aの間に配置される。放熱フレーム7aのその他の構成は、図6の放熱フレーム7と同様である。
図8は、放熱フレームの第2の変形例を表す模式図である。図8に示すように、第2の変形例の放熱フレーム7bでは、基板取付部12が、取付板部13a,13bと天板部14に加えて、取付板部13aとヒートシンク8の間にベース部11に立設された2つの取付板部15b,15cをさらに有する。パワー基板5aは取付板部15cとヒートシンク8の間に配置され、ゲート基板5bは取付板部15bと取付板部13aの間に配置される。放熱フレーム7bのその他の構成は、図6の放熱フレーム7と同様である。
図9は、放熱フレームの第3の変形例を表す模式図である。図9に示すように、第3の変形例の放熱フレーム7cでは、図8の放熱フレーム7bの取付板部15bに代えて、上下方向の長さを短くした取付板部15b’が設けられている。放熱フレーム7cのその他の構成は、図8の放熱フレーム7bと同様である。
図10は、放熱フレームの第4の変形例を表す模式図である。図10に示すように、第4の変形例の放熱フレーム7dでは、図6の放熱フレーム7の天板部14が除去されている。放熱フレーム7dのその他の構成は、図6の放熱フレーム7と同様である。
図11は、放熱フレームの第5の変形例を表す模式図である。図11に示すように、第5の変形例の放熱フレーム7eでは、図6の放熱フレーム7aの天板部14が除去されるとともに、基板取付部12が、取付板部13aとヒートシンク8の間に取付板部15aをさらに有する。放熱フレーム7eのその他の構成は、図6の放熱フレーム7と同様である。
図12は、放熱フレームの第6の変形例を表す模式図である。図12に示すように、第6の変形例の放熱フレーム7fでは、図6の放熱フレーム7の取付板部13a及び天板部14が除去されている。放熱フレーム7fのその他の構成は図6の放熱フレーム7と同様である。
図13は、放熱フレームの第7の変形例を表す模式図である。図13に示すように、第7の変形例の放熱フレーム7gでは、図11の放熱フレーム7eの取付板部13a,13bに代えて、上下方向の長さを短くした取付板部13a’,13b’が設けられている。この例では、取付板部13b’は取付板部13a’よりも上下方向の長さが短くなっている。放熱フレーム7gのその他の構成は図11の放熱フレーム7eと同様である。
図14は、放熱フレームの第8の変形例を表す模式図である。図14に示すように、第8の変形例の放熱フレーム7hでは、図6の放熱フレーム7の天板部14に代えて、左右に分断された2つの天板部14b,14cが設けられている。放熱フレーム7hのその他の構成は図6の放熱フレーム7と同様である。
図15は、放熱フレームの第9の変形例を表す模式図である。図15に示すように、第9の変形例の放熱フレーム7iでは、図6の放熱フレーム7の取付板部13aがベース部11に立設されずに天板部14の右端部にネジ13sで取り付けられている。すなわち、放熱フレーム7iは、一体に構成されたベース部11、ベース部11に立設された取付板部13b及び天板部14の部品と、取付板部13aとの2つの部品で構成されている。
図16~図18を参照しつつ、ヒートシンクユニット20の構成のバリエーションについて説明する。なお、図16~図18では、ヒートシンク8、熱伝導性シート16a、パワー素子17、樹脂サポート18、パワー基板5a以外の構成については図示を省略している。
図17は、本変形例のヒートシンクユニット20Aの構成の一例を表す模式図である。
図16に示す上記実施形態に係るヒートシンクユニット20では、パワー素子17がリード端子17bによりパワー基板5aに接続される構成であるため、樹脂サポート18によりパワー素子17をヒートシンク8に押圧する構成となっている。本変形例は、パワー素子17がパワー基板5aに直接実装される表面実装型のパワー素子である場合に対応したものである。
上記実施形態のアンプ部10では、本体フレーム6において放熱フレーム7は下方に、ヒートシンク8は右方に、コネクタC61~C64は上方に配置されたが、これらの本体フレーム6における位置関係は変更することが可能である。図19~図22を参照しつつ、位置関係のバリエーションについて説明する。なお、図19~図22では、本体フレーム6、放熱フレーム7、ヒートシンクユニット20、コネクタC61,C62、及びコネクタ受け基板5h等以外の構成については図示を省略している。
図20は、位置関係の第1の変形例を表す模式図である。図20に示すように、第1の変形例のアンプ部10Aでは、本体フレーム6に前後方向から見た形状が略L字状であるコネクタ受け基板5h1が収容されている。コネクタ受け基板5h1は、本体フレーム6の上面6eの内面側に沿った基板部5haと、放熱フレーム7のベース部11と対向するように配置され、本体フレーム6の右面6dの内面側に沿った基板部5hbとを有する。基板部5haは、上面6eのコネクタC61,C62等と接続されている。本体フレーム6は、少なくとも左面6cと下面6fが開口している。
図21は、位置関係の第2の変形例を表す模式図である。図21に示すように、第2の変形例のアンプ部10Bでは、本体フレーム6に前後方向から見た形状が略L字状であるコネクタ受け基板5h2が収容されている。コネクタ受け基板5h2は、本体フレーム6の上面6eの内面側に沿った基板部5haと、放熱フレーム7のベース部11と対向するように配置され、本体フレーム6の左面6cの内面側に沿った基板部5hcとを有する。基板部5haは、上面6eのコネクタC61,C62等と接続されている。本体フレーム6は、少なくとも右面6dと下面6fが開口している。また、放熱フレーム7(放熱フレームユニット30)が図20に示す放熱フレーム7(放熱フレームユニット30)を左右方向に反転した構成となっている。
図22は、位置関係の第3の変形例を表す模式図である。図22に示すように、第3の変形例のアンプ部10Cでは、放熱フレーム7(放熱フレームユニット30)が図19に示す放熱フレーム7(放熱フレームユニット30)を左右方向に反転した構成となっている。コネクタ受け基板5hは図19と同様に配置されている。本体フレーム6は、少なくとも左面6cと下面6fが開口している。
2 モータ部
5a 基板、パワー基板
5b 基板、ゲート基板
5c 基板、電源基板
5d 基板、DC入力基板
5e 基板、制御基板
5f 基板、制御系配線基板
5g 基板、パワー系配線基板
5h 基板、コネクタ受け基板
6 本体フレーム(第1フレームの一例)
6d 右面(第2の面の一例)
6e 上面(第3の面の一例)
6f 下面(第1の面の一例)
7 放熱フレーム(第2フレームの一例)
8 ヒートシンク
10 アンプ部
11 ベース部
12 基板取付部
13a1 基板取付面
13b1 基板取付面
13b2 基板取付面
14a 基板取付面
16b 熱伝導性シート
17 パワー素子(スイッチング素子の一例)
50a インバータ回路(電力変換回路の一例)
50b ゲート回路(駆動回路の一例)
C61~C64 コネクタ
Claims (13)
- 固定子及び回転子を備えたモータ部と、
前記モータ部に電力を供給するアンプ部と、を有し、
前記アンプ部は、
前記アンプ部の筐体を構成する第1フレームと、
前記第1フレームにおける前記回転子の回転軸方向に垂直な方向に位置する第1の面に配置され、前記第1フレームに収容される少なくとも1つの基板が取り付けられた第2フレームと、を有する
ことを特徴とするモータ。 - 前記アンプ部は、
前記第1フレームにおける前記第1の面とは異なる第2の面に配置され、前記第1フレームに収容され前記少なくとも1つの基板とは異なる他の少なくとも1つの基板が取り付けられたヒートシンクを有する
ことを特徴とする請求項1に記載のモータ。 - 前記アンプ部は、
前記第1フレームにおける前記第1の面及び前記第2の面とは異なる第3の面に配置された少なくとも1つのコネクタを有する
ことを特徴とする請求項2に記載のモータ。 - 前記アンプ部は、
前記第2フレーム、前記ヒートシンク、前記少なくとも1つのコネクタ、の前記第1フレームにおける位置関係を変更可能に構成されている
ことを特徴とする請求項3に記載のモータ。 - 前記第2フレームは、
前記第1フレームの前記第1の面に取り付けられるベース部と、
前記ベース部に立設され、前記少なくとも1つの基板が取り付けられる少なくとも1つの基板取付部と、を有する
ことを特徴とする請求項3又は4に記載のモータ。 - 前記基板取付部は、
複数の基板取付面を有する
ことを特徴とする請求項5に記載のモータ。 - 前記複数の基板取付面のうち、少なくとも2つの前記基板取付面は互いに垂直である
ことを特徴とする請求項6に記載のモータ。 - 前記複数の基板取付面のうち、少なくとも2つの前記基板取付面は互いに平行である
ことを特徴とする請求項6又は7に記載のモータ。 - 前記アンプ部は、
前記第1フレームに収容され、前記少なくとも1つのコネクタが電気的に接続されるコネクタ受け基板を有し、
前記コネクタ受け基板は、
少なくとも一部が前記第2フレームの前記ベース部と対向するように配置されている
ことを特徴とする請求項5乃至8のいずれか1項に記載のモータ。 - 前記アンプ部は、
電力変換回路を構成する複数のスイッチング素子が配置されたパワー基板と、
前記複数のスイッチング素子を駆動する駆動回路が配置されたゲート基板と、を有し、
前記パワー基板及び前記ゲート基板は、
前記ヒートシンクと前記第2フレームの前記基板取付部との間に配置されている
ことを特徴とする請求項5乃至9のいずれか1項に記載のモータ。 - 前記アンプ部は、
前記ゲート基板と前記基板取付部との間に配置された絶縁性の熱伝導性シートを有し、
前記ゲート基板は、
前記熱伝導性シートを介して前記基板取付部に接触するように配置されている
ことを特徴とする請求項10に記載のモータ。 - 固定子及び回転子を備えたモータ部と、前記モータ部に電力を供給するアンプ部と、を有するモータの製造方法であって、
前記アンプ部の筐体を構成する第1フレームに収容される少なくとも1つの基板を、第2フレームに取り付けることと、
前記少なくとも1つの基板が取り付けられた前記第2フレームを、前記第1フレームにおける前記回転子の回転軸方向に垂直な方向に位置する第1の面に取り付けることと、
を有することを特徴とするモータの製造方法。 - 前記第1フレームに収容され前記少なくとも1つの基板とは異なる他の少なくとも1つの基板を、ヒートシンクに取り付けることと、
前記他の少なくとも1つの基板が取り付けられた前記ヒートシンクを、前記第1フレームにおける前記第1の面とは異なる第2の面に取り付けることと、
をさらに有することを特徴とする請求項12に記載のモータの製造方法。
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