Controller

Abstract

A controller that houses a substrate in a housing, prevents or suppresses deformation of the housing, and prevents or suppresses defects in the internal substrate or the like. The controller (1) includes: a housing (2) having a bottom plate (2e) and an upper plate (2f); a drive circuit board (51) disposed inside the housing; and a reinforcing member (9) fixed to the housing. The drive circuit board (51) is parallel to the XZ plane and intersects the upper plate parallel to the XY plane. The reinforcing member is a beam member that extends along the upper plate inside the housing and is located on the upper plate side (Z2 side) of the end edge on the upper plate side (Z2 side) of the drive circuit board. The reinforcing member includes: a first member (91) having a reinforcing plate portion (90) parallel to the YZ plane; and a second member (92) fixed to the housing. The reinforcing plate portion is provided with a wiring hole (94) and a ventilation hole (93) through which wiring (57) connected to the drive circuit board (51) passes.

Description

Technical Field

[0001] The present invention relates to a controller including a substrate on which electronic components are mounted and a housing for housing the substrate. Background Art

[0002] In Patent Document 1, as a controller for controlling a robot, a controller having a control circuit board and a plurality of drive circuit boards connected to the control circuit board is described. Each drive circuit board is arranged in a state of being vertically erected with respect to the control circuit board. A power module and a metal heat sink are mounted on each drive circuit board.

[0003] The controller of Patent Document 1 includes a rectangular parallelepiped housing for housing the control circuit board and the drive circuit boards. The housing is constituted by assembling a lower housing member and an upper housing member. The lower housing member has a right side panel and a left side panel connected to both ends of a bottom panel, and the upper housing member has a front panel and a top panel on which many I / O ports are arranged.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Patent No. 5803213 Summary of the Invention

[0007] In the controller of Patent Document 1, the drive circuit boards are housed in the housing in a vertically erected state. The housing has a size capable of housing a plurality of units such as a power supply circuit board, a communication interface board, and a drive voltage generation board in addition to the drive circuit boards, and has a relatively large planar dimension. In addition, since many openings for arranging I / O ports are provided in the front panel, it is easily deformed. Therefore, when a heavy object or the like is placed on the housing and a load is applied, the top panel may be greatly deflected inward. At this time, the top panel comes into contact with the upper ends of the drive circuit boards housed in a vertically erected state and applies a load to the boards, which may cause a malfunction in the drive circuit boards.

[0008] In view of the above problems, the technical problem of the present invention is to prevent or suppress deformation of the housing and prevent or suppress malfunctions of internal boards and the like in a controller that houses boards in the housing.

[0009] In order to solve the above technical problems, the controller of the present invention is characterized in that it has: a housing having an upper plate and a bottom plate; a substrate disposed inside the housing; and a reinforcing member fixed to the housing, the substrate extending in a direction intersecting the upper plate, the reinforcing member extending in a direction along the upper plate inside the housing and having a reinforcing plate portion that intersects the upper plate, at least a part of the reinforcing member being located on the upper plate side relative to the upper plate side edge of the substrate, and at least one of a wiring hole and a ventilation hole through which wiring connected to the substrate passes being provided in the reinforcing plate portion.

[0010] According to the present invention, a reinforcing member extending along the upper plate of the housing is disposed inside the housing for accommodating the substrate. The reinforcing member is a beam member extending along the upper plate and has a reinforcing plate portion intersecting the upper plate. Therefore, the rigidity against loads from the upper plate side is high. Thus, the rigidity of the housing can be improved, and the deflection of the upper plate can be suppressed. In addition, since the reinforcing member can support the upper plate at a position closer to the upper plate than the substrate, even if the upper plate deflects, contact with the substrate can be restricted. Therefore, it is possible to prevent or suppress the occurrence of defects on the substrate due to deformation of the housing.

[0011] In addition, according to the present invention, since at least one of a wiring hole and a ventilation hole is provided in the reinforcing plate portion, the reinforcing member can be lightened, and an increase in the weight of the controller due to the reinforcement of the housing can be suppressed. In addition, when a ventilation hole is provided, it is possible to suppress the cooling air for cooling the substrate from being blocked by the reinforcing member. Therefore, a temperature rise caused by heat generation from the substrate can be suppressed. Or, when a wiring hole is provided, since the wiring connected to the substrate can be concentrated, it is possible to suppress the wiring from being scattered inside the housing. As a result, damage caused by friction of the wiring due to external forces such as vibration can be suppressed, and it is possible to suppress the cooling air from being blocked by the scattered wiring.

[0012] In the present invention, it is preferable that the reinforcing member includes: a first member having the reinforcing plate portion; and a second member fixed to the first member, one of the first member and the second member being fixed to the housing, the other of the first member and the second member being fixed to the one, the first member having a cutout portion formed by cutting the reinforcing plate portion, and the cutout portion and the second member constituting the wiring hole. In this way, by dividing the reinforcing member into two members and providing a cutout portion forming the wiring hole on the joint surface of the two members, the wiring threading operation can be easily performed. For example, the wiring can be threaded after fixing one of the first member and the second member to the housing, the wiring can be positioned using a bundling member or the like so that the wiring is accommodated in the cutout portion, and then the other of the first member and the second member can be fixed.

[0013] In this case, it is preferable to have a noise removal ring disposed between the substrate and the reinforcing member, and the wiring passes through the noise removal ring. In this way, noise overlapping with the current supplied from the drive circuit board can be suppressed. In addition, since the reinforcing member is divided into two members, it is not necessary to form the wiring hole to a size through which the noise removal ring can pass. Therefore, it is possible to avoid the shape of the reinforcing member being restricted by the noise removal ring. In addition, even when the connector on the drive circuit side is large, the shape of the reinforcing member can be similarly avoided from being restricted.

[0014] In the present invention, it is preferable to have a bundling member for bundling the wiring. By fixing the bundling member to the reinforcing member, the wiring is positioned in the wiring hole. In this way, since the wiring can be held stationary by the bundling member, it is possible to easily assemble the reinforcing member divided into two members. In addition, at this time, it is preferable to fix the bundling member to the member (one of the first member and the second member) that is first fixed to the frame among the first member and the second member. In this way, since it is only necessary to fix the bundling member that bundles the wiring to the member mounted on the frame, the positioning operation of the wiring is easy. In addition, the bundling member can protect the wiring from contacting the end portions of sheet metal members such as the edges of the wiring holes. Therefore, the possibility of wiring damage can be reduced.

[0015] In the present invention, the following structure can be adopted: having a power supply unit disposed in the frame, the frame including: a first side plate intersecting the upper plate and the bottom plate; a second side plate opposite to the first side plate; and a frame fixed to one of the first side plate and the second side plate, and a power supply cover for housing at least a part of the power supply unit is fixed to the other of the first side plate and the second side plate, and the reinforcing member is installed between the frame and the power supply cover. In this way, by fixing the reinforcing member to a frame with high rigidity, the rigidity of the frame can be improved. In addition, by using the power supply cover, even when there is no space to dispose the reinforcing member between the power supply unit and the frame, the reinforcing member can be provided.

[0016] In the present invention, the following structure can be adopted: having a fan disposed in the frame at a position opposite to the reinforcing plate portion, the reinforcing member extending in a direction intersecting the substrate, and the reinforcing plate portion is provided with the ventilation holes, and a plurality of the substrates are arranged in parallel between the fan and the reinforcing member. In such a configuration, by driving the fan, cooling air is supplied to the gap between the substrates through the ventilation holes of the reinforcing member, and the cooling air passing through the gap between the substrates is discharged through the fan. Therefore, the substrates can be effectively cooled.

[0017] Advantages of the Invention

[0018] According to the present invention, a reinforcing member extending along the upper plate of the frame is disposed inside the frame for housing the substrate. The reinforcing member is a beam member extending along the upper plate and has a reinforcing plate portion intersecting the upper plate. Therefore, the rigidity against the load from the upper plate side is high. Thus, the rigidity of the frame can be improved, and the deflection of the upper plate can be suppressed. In addition, since the reinforcing member can support the upper plate at a position closer to the upper plate side than the substrate, even if the upper plate deflects, contact with the substrate can be restricted. Therefore, it is possible to prevent or suppress the occurrence of defects on the substrate due to the deformation of the frame. Further, since at least one of a wiring hole and a ventilation hole is provided in the reinforcing plate portion, the reinforcing member can be lightened, and an increase in the weight of the controller due to the reinforcement of the frame can be suppressed. In addition, when a ventilation hole is provided, it is possible to suppress the cooling air for cooling the substrate from being blocked by the reinforcing member. Or, when a wiring hole is provided, since the wirings connected to the substrate can be concentrated, it is possible to suppress the wirings from being scattered inside the frame. Thereby, damage to the wirings can be suppressed, and it is possible to suppress the cooling air from being blocked by the wirings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an external perspective view of a controller to which the present invention is applied.

[0020] Figure 2 is a perspective view of the controller with the second housing removed.

[0021] Figure 3 is a cross-sectional view of the controller taken along the XZ plane Figure 1 of

[0022] Figure 4 is an exploded perspective view of the reinforcing member and perspective views of the drive circuit board unit, the control circuit board, the side frame, and the power supply cover.

[0023] Figure 5 is an explanatory diagram showing a method of installing the reinforcing member to the frame. DETAILED DESCRIPTION

[0024] Hereinafter, an embodiment of a controller to which the present invention is applied will be described with reference to the drawings. The controller 1 of the present embodiment is a device that supplies power to a robot (manipulator) including an actuator such as a motor.

[0025] Figure 1 is an external perspective view of a controller to which the present invention is applied. Figure 2 is a perspective view of the controller with the second housing removed. Figure 3 is a cross-sectional view taken along the XZ plane Figure 1Cross-sectional view of the controller. In this specification, the three directions of XYZ are mutually orthogonal directions. In this specification, for convenience, the first direction Z is taken as the up-and-down direction of the controller 1. The Z1 direction is the downward direction, and the Z2 direction is the upward direction. The second direction X is the front-back direction of the controller 1. The X1 direction is the front direction, and the X2 direction is the back direction. The third direction Y is the width direction of the controller 1. The Y1 direction and the Y2 direction are one side and the other side of the third direction Y. Additionally, in the actual usage mode of the controller 1, the first direction Z may not coincide with the up-and-down direction (vertical direction).

[0026] (Overall structure)

[0027] As Figure 1 , Figure 2 , Figure 3 shown, the controller 1 includes a metal housing 2. The housing 2 is a cuboid and includes a front plate 2a facing the X1 direction, a back panel 2b facing the X2 direction, a first side plate 2c facing the Y1 direction, a second side plate 2d facing the Y2 direction, a bottom plate 2e facing the Z1 direction, and an upper plate 2f facing the Z2 direction. In this embodiment, the components constituting the housing 2 include: a first housing 21 having a bottom plate 2e, a first side plate 2c, and a back panel 2b; a second housing 22 having an upper plate 2f and a second side plate 2d; a first interface panel 23 and a second interface panel 24 constituting the front plate 2a; and a housing frame 25.

[0028] As Figure 2 , Figure 3 shown, the housing frame 25 includes: a rectangular front frame 26 to which the front plate 2a is fixed; a rectangular back frame 27 to which the back panel 2b is fixed; and a rectangular side frame 28 to which the second side plate 2d is fixed. A frame portion 2h that bends toward the X1 side is provided at the edge on the Y2 side of the back panel 2b. The end on the X1 side of the side frame 28 is fixed to the front frame 26, and the end on the X2 side is fixed to the frame portion 2h. The side frame 28 includes a straight frame 29 that extends linearly in the second direction X at a position that descends a specified dimension in the Z1 direction from the ends in the Z2 direction of the front frame 26 and the back panel 2b.

[0029] As Figure 2 , Figure 3As shown, the controller 1 includes a communication board unit 3, a control circuit board 4, a drive circuit board unit 5, a drive circuit power supply board unit 6, and a power supply unit 7 disposed inside the housing 2. In addition, the controller 1 has: two fans 8 arranged side by side in the third direction Y on the back panel 2b of the housing 2; and a reinforcing member 9 erected in the housing 2 in the third direction Y and supporting the upper plate 2f from the bottom plate 2e side (Z1 side). The reinforcing member 9 extends from the space on the Z2 side of the drive circuit power supply board unit 6 to the power supply unit 7 on the X1 side of the drive circuit board unit 5.

[0030] As Figure 3 shown, the communication board unit 3 is disposed on the back side (X2 side) of the first interface panel 23. The communication board unit 3 is a unit in which two communication boards 31 and 32 are stacked with a spacer therebetween on the Z2 side of the board fixing panel 33 and screwed to the board fixing panel 33. A plurality of external connection connectors 34 mounted on the communication board unit 3 are respectively disposed in holes provided in the first interface panel 23. The board fixing panel 33 is fixed to the first interface panel 23. Therefore, by removing the screws fixing the first interface panel 23 to the front frame 26, the first interface panel 23 and the communication board unit 3 can be removed integrally.

[0031] The drive circuit power supply board unit 6 and the drive circuit board unit 5 are sequentially disposed on the back side (X2 side) of the communication board unit 3. As Figure 3 shown, the drive circuit power supply board unit 6 is constituted by stacking two drive circuit power supply boards 61 and 62 with a spacer therebetween on the Z2 side of the support plate 63 and is screwed to the bottom plate 2e. In Figure 3 this, only the capacitors 64 among the electronic components mounted on the drive circuit power supply boards 61 and 62 are illustrated, and the illustration of other electronic components is omitted.

[0032] As Figure 2 shown, the power supply unit 7 is disposed at the end in the Y1 direction of the housing 2. The power supply unit 7 is configured to be detachable from the housing 2 and can be removed in the X2 direction from an opening provided at the end on the Y1 side of the back panel 2b. The power supply unit 7 is an elongated unit extending from the back panel 2b to the back side of the external power connector 70 disposed at the end on the Y1 side of the second interface panel 24. The middle part in the second direction X of the power supply unit 7 is disposed inside the power supply cover 10 fixed to the housing 2.

[0033] As Figure 2As shown, a fuse 11 connected to an external power connector 70 is disposed on the Z2 side of the power supply cover 10. The fuse 11 is connected to a noise filter 12, and the noise filter 12 is disposed at a position adjacent to the power supply cover 10 in the Y2 direction. The noise filter 12 has a filter circuit for removing noise superimposed on the alternating current supplied from the external power connector 70 via the fuse 11.

[0034] The alternating current output from the noise filter 12 is distributed to the drive circuit power supply board unit 6 and the power supply unit 7. The power supply unit 7 converts the alternating current distributed from the noise filter 12 into a direct current of 5V and a direct current of 24V, and supplies them to the control circuit board 4 fixed to the bottom plate 2e of the housing 2 (see Figure 3 ). The direct current of 24V is supplied to the fan 8 via the control circuit board 4. In addition, the power supply unit 7 converts the alternating current into a direct current of 15V and supplies it to the drive circuit power supply board unit 6. The drive circuit power supply board unit 6 converts the alternating current distributed from the noise filter 12 into a drive current (direct current) having a voltage different from the supplied voltage from the power supply unit 7 and supplies it to the drive circuit board unit 5.

[0035] As Figure 2 shown, the drive circuit board unit 5 includes: four drive circuit boards 51 arranged at regular intervals in the third direction Y; heat dissipation components 52 fixed to each drive circuit board 51; and a board holder 53. Power modules such as IGBT modules are installed on the drive circuit boards 51. The heat dissipation components 52 are installed in contact with or opposite to the power modules, and have heat sinks extending in the second direction X. As Figure 3 shown, the board holder 53 is fixed to the bottom plate 2e of the housing 2. The four drive circuit boards 51 are held in a posture parallel to the XZ plane by the board holder 53, and are opposed to the two fans 8 mounted on the back panel 2b of the housing 2 in the second direction X. Therefore, when the fan 8 is driven, a cooling air flow passes through the gaps between the drive circuit boards 51, and thus, the drive circuit boards 51 and the heat dissipation components 52 are cooled.

[0036] As Figure 3 shown, a control circuit board 4 is disposed at the bottom of the housing 2 in a manner parallel to the bottom plate 2e. The control circuit board 4 is screwed and fixed to the front end of a stepped pin 2g protruding from the bottom plate 2e toward the Z2 side. Above the control circuit board 4 (in the Z2 direction), the drive circuit board 51 is disposed in a posture perpendicular to the control circuit board 4. The drive circuit board 51 is connected to the control circuit board 4 via a first connector 54 and a second connector 55 fitted in the first direction Z.

[0037] As Figure 2As shown in the figure, an output connector 56 is disposed at the end on the X1 side of each drive circuit board 51. The wiring 57 connected to the output connector 56 passes through a noise removal loop 58, is led out from a wiring hole 94 provided in the reinforcing member 9 to the X1 side, and is connected to an external output connector 59 provided on the second interface panel 24. If a connector on the robot side is connected to the external output connector 59, power is supplied from the controller 1 to the robot.

[0038] (Reinforcing member)

[0039] Figure 4 is an exploded perspective view of the reinforcing member 9, a perspective view of the drive circuit board unit 5, the control circuit board 4, the side frame 28, and the power supply cover 10. Figure 5 is an explanatory diagram showing a method of mounting the reinforcing member 9 to the housing 2. As Figure 2 shown, the reinforcing member 9 is installed between the power supply cover 10 and the side frame 28 and extends along the upper plate 2f. As Figure 3 shown, the end on the Z2 side of the reinforcing member 9 (the bending plate portion 91b described later) is located on the Z2 side (the upper plate 2f side) more than the end edge on the Z2 side of the drive circuit board 51. In the present embodiment, the end on the Z2 side of the reinforcing member 9 is located about 3 mm on the Z2 side more than the end edge on the Z2 side of the drive circuit board 51 and is in contact with the inner surface (the surface on the Z1 side) of the upper plate 2f.

[0040] As Figure 4 、 Figure 5 shown, the power supply cover 10 includes: a cover upper plate 10a that surrounds the power supply unit 7 from the Z2 side; a cover side plate 10b that surrounds the power supply unit 7 from the Y2 side; a mounting plate portion 10c that bends from the end on the Y1 side of the cover upper plate 10a to the Z2 side and is fixed to the first side plate 2c; and a mounting plate portion 10d that bends from the end on the Z1 side of the cover side plate 10b to the Y2 side and is fixed to the bottom plate 2e. The end on the Y1 side of the reinforcing member 9 is fixed to the cover upper plate 10a by screwing. The side frame 28 includes a reinforcing member fixing portion 30 that bends from the edge on the Z2 side of the linear frame 29 to the Y1 side. The end on the Y2 side of the reinforcing member 9 is fixed to the reinforcing member fixing portion 30 by screwing. Therefore, the reinforcing member 9 is installed between the side frame 28 and the power supply cover 10.

[0041] As Figure 4 shown, the reinforcing member 9 is composed of assembling two members, a first member 91 having a reinforcing plate portion 90 parallel to the YZ plane and a second member 92 installed between the power supply cover 10 and the side frame 28. The first member 91 has a ventilation hole 93 and a wiring hole 94 penetrating the reinforcing plate portion 90. The ventilation hole 93 is circular and arranged at regular intervals in the third direction Y. As Figure 2 、 Figure 3As shown, when the reinforcing member 9 is installed on the housing 2, the reinforcing plate portion 90 provided with the vent holes 93 faces the fan 8 installed on the back panel 2b and the vent holes 2i provided on the front panel 2a. Therefore, when the fan 8 is driven, the external air (cooling air) taken into the housing 2 from the vent holes 2i is sent to the drive circuit board unit 5 through the vent holes 93 and the space on the Z1 side of the reinforcing member 9, passes through the gap between the drive circuit board 51 and the heat dissipation member 52, and is discharged to the outside of the housing 2 through the fan 8.

[0042] As Figure 4 shown, the first member 91 includes bent plate portions 91a and 91b that are bent toward the X2 side from the edges on the Z1 side and the Z2 side of the reinforcing plate portion 90 that is longer in the third direction Y. In addition, the first member 91 includes: bent plate portions 91c and 91d that are bent toward the X2 side from the edges on the Y1 side and the Y2 side of the reinforcing plate portion 90; a mounting plate portion 91e that extends from the end on the Z1 side of the bent plate portion 91c toward the Y1 side; and a mounting plate portion 91f that extends from the end on the Z1 side of the bent plate portion 91d toward the Y2 side. Fixing holes for screwing and fixing the first member 91 to the second member 92 are provided on the mounting plate portion 91e and the mounting plate portion 91f.

[0043] The second member 92 includes: a flat plate portion 92a that abuts against the bent plate portion 91a and the mounting plate portions 91e and 91f of the first member 91 from the Z1 side; and a protruding portion 92b that protrudes from the edge on the X1 side of the plate portion 92a. In addition, the second member 92 includes: bent plate portions 92c and 92d that are bent toward the Z1 side from the edges on the Y1 side and the Y2 side of the plate portion 92a; a mounting plate portion 92e that extends from the end on the Z1 side of the bent plate portion 92c toward the Y1 side; and a mounting plate portion 92f that extends from the end on the Z1 side of the bent plate portion 92d toward the Y2 side.

[0044] A cutout portion 95 that cuts the bent plate portion 91a and the reinforcing plate portion 90 toward the Z2 side is provided on the first member 91. If the plate portion 92a of the second member 92 is abutted against the bent plate portion 91a of the first member 91 from the Z1 side and the mounting plate portions 91e and 91f of the first member 91 are screwed and fixed to both ends in the third direction Y of the plate portion 92a of the second member 92, a wiring hole 94 is formed by the cutout portion 95 and the plate portion 92a. The protruding portion 92b of the second member 92 extends from the edge on the Z1 side of the wiring hole 94 toward the X1 side. A bundling member 96 for bundling the wiring 57 of the drive circuit board unit 5 passing through the wiring hole 94 is fixed to the protruding portion 92b.

[0045] When installing the reinforcing member 9 on the housing 2, as Figure 5As shown, in a state where the second component 92 is separated from the first component 91, it is installed between the side frame 28 and the power supply cover 10. At this time, the mounting plate portion 92f of the second component 92 is brought into contact with the reinforcing component fixing portion 30 from the Z2 side and fixed by screwing, and the mounting plate portion 92e of the second component 92 is brought into contact with the power supply cover 10 from the Z2 side and fixed by screwing. Then, the wirings 57 connected to the output connectors 56 of the respective drive circuit boards 51 are respectively passed through the noise removal rings 58, bundled by the bundling member 96, and the bundling member 96 is fixed to the protruding portion 92b by screwing. Then, the first component 91 is fixed to the second component 92 by screwing from the Z2 side. At this time, the wirings positioned at the protruding portion 92b via the bundling member 96 are housed in the cutout portion 95. In addition, the front ends of the bundled wirings 57 are connected to the external output connector 59.

[0046] (Main effects of this embodiment)

[0047] As described above, in the controller 1 of this embodiment, there are: a housing 2 having a bottom plate 2e and an upper plate 2f; a drive circuit board 51 disposed inside the housing 2; and a reinforcing member 9 fixed to the housing 2. The drive circuit board 51 is parallel to the XZ plane and intersects the upper plate 2f parallel to the XY plane. The reinforcing member 9 is a beam member extending along the upper plate 2f inside the housing 2 and has a reinforcing plate portion 90 parallel to the YZ plane (i.e., the plane intersecting the upper plate 2f). The bent plate portion 91b at the Z2-side end of the reinforcing member 9 is located on the upper plate 2f side (Z2 side) relative to the upper plate 2f-side (Z2 side) edge of the drive circuit board 51. A wiring hole 94 and a ventilation hole 93 through which the wiring 57 connected to the drive circuit board 51 passes are provided on the reinforcing plate portion 90.

[0048] In this way, in this embodiment, the reinforcing member 9 extending along the upper plate 2f is disposed inside the housing 2 that houses the drive circuit board 51. Since the reinforcing member 9 has a reinforcing plate portion 90 intersecting the upper plate 2f, the rigidity against the load from the upper plate 2f side is high. Therefore, deformation of the housing 2 can be suppressed, and deflection of the upper plate 2f toward the bottom plate 2e side can be suppressed. In addition, since the reinforcing member 9 can support the upper plate 2f at a position on the upper plate 2f side (Z2 side) relative to the drive circuit board 51, even if the upper plate 2f deflects, contact between the upper plate 2f and the drive circuit board 51 can be restricted. Therefore, it is possible to prevent or suppress the occurrence of problems on the drive circuit board 51 due to deformation of the housing 2.

[0049] In addition, in the present embodiment, since the vent holes 93 and the wiring holes 94 are provided in the reinforcing plate portion 90, even when the height of the reinforcing member 9 in the Z direction is increased to improve the rigidity, the reinforcing member 9 can be made lighter in weight, and an increase in the weight of the controller 1 caused by the reinforcing frame 2 can be suppressed. In addition, when the vent holes 93 are provided, it is possible to prevent the external air (cooling air) from the vent holes 2i from being blocked by the reinforcing member 9. Alternatively, when the wiring holes 94 are provided, the wirings 57 connected to the drive circuit board 51 can be concentrated, and thus, it is possible to prevent the wirings 57 from being scattered inside the housing 2. As a result, damage caused by friction of the wirings 57 due to external forces such as vibration can be suppressed, and it is possible to prevent the cooling air from being blocked by the scattered wirings 57.

[0050] In addition, in the present embodiment, the wiring holes 94 and the vent holes 93 are provided in the reinforcing plate portion 90, but a structure in which only one of the wiring holes 94 and the vent holes 93 is provided may also be employed.

[0051] In the present embodiment, the reinforcing member 9 includes a first member 91 having a reinforcing plate portion 90 and a second member 92 fixed to the first member 91. The second member 92 is fixed to the housing 2, and the first member 91 is fixed to the second member 92. The first member 91 has a cutout portion 95 that cuts the reinforcing plate portion 90, and the cutout portion 95 and the second member 92 constitute the wiring hole 94. In this way, if the reinforcing member 9 is divided into two members and the cutout portion 95 that constitutes the wiring hole 94 is provided on the joint surface of the two members, the work of threading the wirings 57 becomes easy. For example, after the second member 92 is fixed to the housing 2, the first member 91 can be positioned so that the wirings 57 connected to the drive circuit board 51 are accommodated in the cutout portion 95 of the first member 91, and then the first member 91 can be screwed to the second member 92.

[0052] In addition, in the present embodiment, first, the second member 92 in which the reinforcing plate portion 90 and the cutout portion 95 are not provided is fixed to the housing 2, the wirings 57 are positioned on the second member 92 using a bundling member 96, and then the first member 91 is fixed to the second member 92 to accommodate the wirings 57 in the cutout portion 95, but a structure in which the member first fixed to the housing 2 has the reinforcing plate portion 90 and the cutout portion 95 may also be employed.

[0053] In the present embodiment, the wiring 57 passes through the noise removal loop 58 disposed between the drive circuit board 51 and the reinforcing member 9. Therefore, it is possible to suppress the noise superimposed on the current supplied from the drive circuit board 51. Further, since the reinforcing member 9 is divided into two members and the wiring hole 94 is formed by assembling the two members, it is not necessary to form the wiring hole 94 to a size through which the noise removal loop 58 can pass. Therefore, it is possible to avoid the shape of the reinforcing member 9 being restricted by the noise removal loop 58. Further, even when the connector on the drive circuit side is large, it is similarly possible to avoid the shape of the reinforcing member 9 being restricted.

[0054] In the present embodiment, there is provided a bundling member 96 for bundling the wiring 57. By fixing the bundling member 96 to the reinforcing member 9, the wiring 57 is positioned in the wiring hole 94. That is, in the present embodiment, the bundling member 96 is fixed to the protruding portion 92b of the second member 92. By fixing the bundling member 96 to the protruding portion 92b protruding from the edge of the wiring hole 94, it is possible to easily position the wiring 57 in the wiring hole 94, and it is possible to protect the wiring 57 from contacting the end portion of a sheet metal member such as the edge of the wiring hole 94 by the bundling member 96. Therefore, it is possible to reduce the possibility of damage to the wiring 57. Further, with respect to the second member 92 that is first fixed to the frame 2 among the first member 91 and the second member 92, it is only necessary to position the wiring 57 using the bundling member 96. Therefore, the positioning operation of the wiring 57 is easy. Further, since the wiring 57 can be held stationary by the bundling member 96, the assembly operation of the reinforcing member 9 divided into two members is easy.

[0055] In the present embodiment, there are provided a power supply unit 7 disposed in the frame 2 and a power supply cover 10 surrounding a part of the X1 side of the power supply unit 7. The frame 2 includes a first side plate 2c for fixing the power supply cover 10, a second side plate opposite to the first side plate 2c, and a side frame 28 for reinforcing the side of the second side plate 2d. The reinforcing member 9 is installed between the side frame 28 and the power supply cover 10. Thus, by fixing the reinforcing member 9 to a frame having high rigidity among the members constituting the frame 2, it is possible to improve the rigidity of the frame 2. Further, by using the power supply cover 10, it is possible to provide the reinforcing member 9 even when there is no space around the power supply unit 7 for disposing the reinforcing member 9.

[0056] In the present embodiment, a fan 8 is disposed in the housing 2 at a position opposite to the reinforcing plate portion 90. The reinforcing member 9 extends in a direction (third direction Y) intersecting the drive circuit board 51, and ventilation holes 93 are provided in the reinforcing plate portion 90. A plurality of drive circuit boards 51 are arranged in parallel between the fan 8 and the reinforcing member 9. In such a configuration, by driving the fan 8, external air (cooling air) taken in through the ventilation hole 2i is sent to the gap between the drive circuit boards 51 via the ventilation holes 93, and the cooling air passing through the gap between the drive circuit boards 51 is discharged via the fan 8. Therefore, the drive circuit board 51 can be effectively cooled.

[0057] Reference Signs

[0058] 1... Controller; 2... Housing; 2a... Front plate; 2b... Rear plate; 2c... First side plate; 2d... Second side plate; 2e... Bottom plate; 2f... Upper plate; 2g... Step pin; 2h... Frame portion; 2i... Ventilation hole; 3... Communication board unit; 4... Control circuit board; 5... Drive circuit board unit; 6... Drive circuit power supply board unit; 7... Power supply unit; 8... Fan; 9... Reinforcing member; 10... Power supply cover; 10a... Cover upper plate; 10b... Cover side plate; 10c, 10d... Mounting plate portion; 11... Fuse; 12... Noise filter; 21... First housing; 22... Second housing; 23... First interface panel; 24... Second interface panel; 25... Housing frame; 26... Front frame; 27... Rear frame; 28... Side frame; 29... Straight frame; 30... Reinforcing member fixing portion; 31, 32... Communication board; 33... Board fixing panel; 34... External connection connector; 51... Drive circuit board; 52... Heat dissipation member; 53... Board holder; 54... First connector; 55... Second connector; 56... Output connector; 57... Wiring; 58... Noise removal ring; 59... External output connector; 61, 62... Drive circuit power supply board; 63... Support plate; 64... Capacitor; 70... External power connector; 90... Reinforcing plate portion; 91... First member; 91a, 91b, 91c, 91d... Bent plate portion; 91e, 91f... Mounting plate portion; 92... Second member; 92a... Plate portion; 92b... Protrusion; 92c, 92d... Bent plate portion; 92e, 92f... Mounting plate portion; 93... Ventilation hole; 94... Wiring hole; 95... Cutout portion; 96... Binding member; X... Second direction; Y... Third direction; Z... First direction.

Claims

1. A controller, characterized in that, it has: a housing having an upper plate and a bottom plate; a substrate disposed inside the housing; and a reinforcing member fixed to the housing, the upper plate being parallel to a first plane, the substrate being parallel to a second plane intersecting the first plane, the reinforcing member extending in a direction along the upper plate inside the housing and having a reinforcing plate portion parallel to a third plane intersecting the first plane and the second plane, at least a part of the reinforcing member being located on the upper plate side relative to the upper plate side edge of the substrate, the reinforcing plate portion being provided with at least one of a wiring hole and a ventilation hole, the wiring hole allowing wiring connected to the substrate to pass through, the controller having a fan disposed in the housing at a position opposite to the reinforcing plate portion, the reinforcing member extending in a direction intersecting the substrate and the reinforcing plate portion being provided with the ventilation hole.

2. The controller according to claim 1, characterized in that, the reinforcing member includes: a first member having the reinforcing plate portion; and a second member fixed to the first member, one of the first member and the second member being fixed to the housing, and the other of the first member and the second member being fixed to the one, the first member having a cutout portion formed by cutting the reinforcing plate portion, the cutout portion and the second member constituting the wiring hole.

3. The controller according to claim 2, characterized in that, it includes a noise removal ring disposed between the substrate and the reinforcing member, the wiring passing through the noise removal ring.

4. The controller according to claim 2, characterized in that, it includes a bundling member for bundling the wiring, the wiring being positioned in the wiring hole by fixing the bundling member to the reinforcing member.

5. The controller according to claim 4, characterized in that, the bundling member is fixed to the one of the first member and the second member.

6. The controller according to any one of claims 1 to 5, characterized in that, it has: a power supply unit disposed in the housing; and a power supply cover surrounding at least a part of the power supply unit, the housing having: a first side plate for fixing the power supply cover; a second side plate opposite to the first side plate; and a frame for strengthening the second side plate, the reinforcing member being spanned between the frame and the power supply cover.

7. The controller according to any one of claims 1 to 5, characterized in that, a plurality of the substrates are arranged in parallel between the fan and the reinforcing member.

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