JP7734019B2 - controller - Google Patents

Description

The present invention relates to a controller that includes a substrate on which electronic elements are mounted and a housing that houses the substrate.

Patent Document 1 describes a robot controller that includes a control circuit board and multiple drive circuit boards connected to the control circuit board. Each drive circuit board is positioned perpendicular to the control circuit board. A power module and a metal heat sink are attached to each drive circuit board.

The controller in Patent Document 1 has a rectangular parallelepiped housing that houses a control circuit board and a drive circuit board. The housing is constructed by assembling a lower case member with a right and left panel connected to either end of the bottom panel, and an upper case member with a front panel and a top panel on which numerous I/O ports are located.

Patent No. 5803213

The controller in Patent Document 1 houses a drive circuit board in a vertically standing position inside a housing. The housing is large enough to house multiple units, such as a power supply circuit board, a communication interface board, and a drive voltage generation board, in addition to the drive circuit board, and has a large planar size. The front panel also has numerous openings where I/O ports are located, making it prone to deformation. Therefore, if a load is applied, such as by placing a heavy object on the housing, the top panel may bend significantly inward. In this case, the top panel may come into contact with the upper end of the drive circuit board, which is housed in a vertically standing position, and a load may be applied to the board, potentially causing a malfunction in the drive circuit board.

In light of the above problems, the objective of the present invention is to prevent or suppress deformation of the housing of a controller that houses a circuit board inside the housing, thereby preventing or suppressing malfunctions of the internal circuit board, etc.

In order to solve the above problem, the controller of the present invention comprises a housing having a top plate and a bottom plate, a substrate placed inside the housing, and a reinforcing member fixed to the housing, wherein the substrate extends in a direction intersecting with the top plate, the reinforcing member extends inside the housing in a direction along the top plate and includes a reinforcing plate portion intersecting with the top plate, at least a portion of the reinforcing member is located closer to the top plate than the edge of the substrate on the top plate side, and the reinforcing plate portion is provided with at least one of a wiring hole through which wiring connected to the substrate passes and an air vent.

According to the present invention, a reinforcing member extending along the top plate of the housing is disposed inside the housing that accommodates the substrate. The reinforcing member is a beam member extending along the top plate and includes a reinforcing plate portion that intersects with the top plate, thereby providing high rigidity against loads from the top plate side. This increases the rigidity of the housing and suppresses deflection of the top plate. Furthermore, because the reinforcing member can support the top plate on the top plate side of the substrate, it can prevent the top plate from coming into contact with the substrate even if it deflects. This prevents or suppresses defects in the substrate caused by deformation of the housing.

Furthermore, according to the present invention, the reinforcing plate portion is provided with at least one of wiring holes and ventilation holes, which allows for a lighter reinforcing member and prevents the weight of the controller from increasing due to the reinforcement of the housing. Furthermore, when ventilation holes are provided, the cooling air that cools the board is prevented from being blocked by the reinforcing member. This prevents temperature increases due to heat generated by the board. Alternatively, when wiring holes are provided, the wiring connected to the board can be bundled, preventing the wiring from becoming disorganized within the housing. This prevents damage caused by rubbing of the wiring due to external forces such as vibration, and also prevents the cooling air from being blocked by loose wiring.

In the present invention, the reinforcing member preferably comprises 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 first member, the first member having a notch formed by cutting out the reinforcing plate portion, and the notch and the second member forming the wiring hole. In this way, by dividing the reinforcing member into two members and providing a notch that forms the wiring hole on the joining surface of the two members, the work of routing the wiring can be easily performed. For example, one of the first member and the second member can be fixed to the housing, the wiring can be routed, and the wiring can be positioned using a bundling member or the like so that the wiring is accommodated in the notch, and then the other of the first member and the second member can be fixed.

In this case, it is preferable to provide a noise reduction ring that is placed between the board and the reinforcing member, with the wiring passing through the noise reduction ring. This makes it possible to suppress noise superimposed on the current supplied from the drive circuit board 51. Furthermore, because the reinforcing member is divided into two members, there is no need to make the wiring hole large enough for the noise reduction ring to pass through. This prevents the shape of the reinforcing member from being restricted by the noise reduction ring. Similarly, if the connector on the drive circuit side is large, it is possible to avoid restricting the shape of the reinforcing member.

In the present invention, it is preferable to provide a bundling member for bundling the wiring, and to fix the bundling member to the reinforcing member, thereby positioning the wiring in the wiring hole. In this way, the bundling member can hold the wiring immobile, making it easy to assemble the reinforcing member, which is separated into two parts. In addition, it is preferable to fix the bundling member to the first of the first and second members that is fixed to the housing first (one of the first and second members). In this way, it is easy to position the wiring, as it is only necessary to fix the bundling member that bundles the wiring to the member attached to the housing. Furthermore, the bundling member can protect the wiring from hitting the edges of the sheet metal member, such as the edges of the wiring hole. This reduces the risk of damage to the wiring.

In this invention, a power supply unit is placed within the housing, and the housing includes a first side plate intersecting the top plate and the bottom plate, a second side plate facing the first side plate, and a frame fixed to one of the first side plate and the second side plate. A power supply cover that houses at least a portion 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 configured to span between the frame and the power supply cover. In this way, by fixing the reinforcing member to a highly rigid frame, the rigidity of the housing can be increased. Furthermore, by using a power supply cover, the reinforcing member can be installed even if there is not enough space to place it between the power supply unit and the housing.

In the present invention, a configuration can be adopted in which the housing has a fan disposed at a position facing the reinforcing plate portion, the reinforcing member extends in a direction intersecting the board, the reinforcing plate portion has the vent holes, and multiple boards are arranged in parallel between the fan and the reinforcing member. In this configuration, by driving the fan, cooling air is blown into gaps in the boards through the vent holes in the reinforcing member, and the cooling air that has passed through the gaps in the boards is exhausted via the fan. Therefore, the boards can be cooled effectively.

According to the present invention, a reinforcing member extending along the top plate of the housing is disposed inside the housing that houses the board. The reinforcing member is a beam member extending along the top plate and includes a reinforcing plate portion that intersects with the top plate, providing high rigidity against loads from the top plate side. This increases the rigidity of the housing and reduces deflection of the top plate. Furthermore, because the reinforcing member supports the top plate on the side closer to the board than the board, it prevents the top plate from coming into contact with the board even if it deflects. This prevents or reduces problems with the board caused by deformation of the housing. Furthermore, the reinforcing plate portion is provided with at least one of wiring holes and ventilation holes, allowing the reinforcing member to be lightweight and reducing the weight of the controller due to reinforcement of the housing. Furthermore, providing ventilation holes prevents the reinforcing member from blocking the cooling air that cools the board. Alternatively, providing wiring holes allows the wiring connected to the board to be grouped together, preventing the wiring from becoming disorganized within the housing. This reduces damage to the wiring and prevents the wiring from blocking the cooling air.

1 is a perspective view of the appearance of a controller to which the present invention is applied; FIG. 2 is a perspective view of the controller with the second case removed. 2 is a cross-sectional view of the controller of FIG. 1 taken along the XZ plane. 2 is an exploded perspective view of a reinforcing member, and a perspective view of a drive circuit board unit, a control circuit board, a side frame, and a power supply cover. FIG. 10A and 10B are explanatory diagrams showing a method of attaching a reinforcing member to a housing.

An embodiment of a controller to which the present invention is applied will be described below with reference to the drawings. The controller 1 of this embodiment is a device that supplies power to a robot (manipulator) equipped with an actuator such as a motor.

Figure 1 is an external perspective view of a controller to which the present invention is applied. Figure 2 is an oblique view of the controller with the second case removed. Figure 3 is a cross-sectional view of the controller of Figure 1 cut along the XZ plane. In this specification, the three directions, XYZ, are mutually perpendicular. For convenience, in this specification, the first direction Z is defined as the up-down direction of the controller 1. The Z1 direction is downward, and the Z2 direction is upward. The second direction X is the front-to-back direction of the controller 1. The X1 direction is forward, and the X2 direction is backward. 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 of the third direction Y. Note that in actual use of the controller 1, the first direction Z does not have to coincide with the up-down direction (vertical direction).

(Overall structure)
1, 2, and 3, the controller 1 includes a metal housing 2. The housing 2 is a rectangular parallelepiped and includes a front panel 2a facing in the X1 direction, a back panel 2b facing in the X2 direction, a first side panel 2c facing in the Y1 direction, a second side panel 2d facing in the Y2 direction, a bottom panel 2e facing in the Z1 direction, and a top panel 2f facing in the Z2 direction. In this embodiment, the components that make up the housing 2 include a first case 21 including the bottom panel 2e, the first side panel 2c, and the back panel 2b, a second case 22 including the top panel 2f and the second side panel 2d, a first interface panel 23 and a second interface panel 24 that make up the front panel 2a, and a housing frame 25.

As shown in Figures 2 and 3, the housing frame 25 includes a rectangular front frame 26 to which the front panel 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 panel 2d is fixed. The Y2-side edge of the back panel 2b is provided with a frame portion 2h that is bent toward the X1 side. The X1-side end of the side frame 28 is fixed to the front frame 26, and the X2-side end is fixed to the frame portion 2h. The side frame 28 includes a linear frame 29 that extends linearly in the second direction X at a position that is a predetermined distance lower in the Z1 direction than the Z2-direction ends of the front frame 26 and back panel 2b.

As shown in Figures 2 and 3, 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, which are arranged inside the housing 2. The controller 1 also includes two fans 8 attached to the back panel 2b of the housing 2 in a line in the third direction Y, and a reinforcing member 9 that spans the inside of the housing 2 in the third direction Y and supports the top panel 2f from the bottom panel 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 toward the power supply unit 7, on the X1 side of the drive circuit board unit 5.

As shown in FIG. 3, the communication board unit 3 is disposed on the rear 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 on the Z2 side of the board fixing panel 33 via a spacer and screwed to the board fixing panel 33. The multiple external connection connectors 34 mounted on the communication board unit 3 are each positioned 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 that fix the first interface panel 23 to the front frame 26, the first interface panel 23 and the communication board unit 3 can be removed together.

The drive circuit power supply board unit 6 and drive circuit board unit 5 are arranged in this order on the rear side (X2 side) of the communication board unit 3. As shown in Figure 3, the drive circuit power supply board unit 6 is constructed by stacking two drive circuit power supply boards 61 and 62 on the Z2 side of the support plate 63 with spacers between them, and is screwed to the bottom plate 2e. Of the electronic elements mounted on the drive circuit power supply boards 61 and 62, only the capacitor 64 is shown in Figure 3; other electronic elements are omitted.

As shown in FIG. 2, the power supply unit 7 is located at the Y1 end 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 Y1 end of the back panel 2b. The power supply unit 7 is a long, slender unit that extends from the back panel 2b to the rear side of the external power connector 70 located at the Y1 end of the second interface panel 24. The middle portion of the power supply unit 7 in the second direction X is located inside the power supply cover 10 fixed to the housing 2.

As shown in FIG. 2, a fuse 11 connected to the external power connector 70 is located on the Z2 side of the power supply cover 10. The fuse 11 is connected to a noise filter 12 located adjacent to the power supply cover 10 in the Y2 direction. The noise filter 12 includes a filter circuit for removing noise superimposed on the AC current supplied from the external power connector 70 via the fuse 11.

The AC 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 AC current distributed from the noise filter 12 into a 5 V DC current and a 24 V DC current, and supplies them to the control circuit board 4 (see FIG. 3 ) fixed to the bottom plate 2 e of the housing 2. The 24 V DC current is supplied to the fan 8 via the control circuit board 4. The power supply unit 7 also converts the AC current into a 15 V DC current and supplies it to the drive circuit power supply board unit 6. The drive circuit power supply board unit 6 converts the AC current distributed from the noise filter 12 into a drive current (DC current) of a different voltage than the voltage supplied from the power supply unit 7, and supplies it to the drive circuit board unit 5.

As shown in FIG. 2, the drive circuit board unit 5 includes four drive circuit boards 51 arranged at regular intervals in the third direction Y, a heat dissipation member 52 fixed to each drive circuit board 51, and a board holder 53. A power module such as an IGBT module is mounted on the drive circuit board 51. The heat dissipation member 52 is attached so as to contact or face the power module and has fins extending in the second direction X. As shown in FIG. 3, the board holder 53 is fixed to the bottom plate 2e of the housing 2. The four drive circuit boards 51 are held parallel to the XZ plane by the board holder 53 and face two fans 8 attached to the back plate 2b of the housing 2 in the second direction X. Therefore, when the fans 8 are driven, cooling air flows through the gaps between the drive circuit boards 51, cooling the drive circuit boards 51 and the heat dissipation member 52.

As shown in Figure 3, the control circuit board 4 is arranged on the bottom of the housing 2 so as to be parallel to the bottom plate 2e. The control circuit board 4 is screwed to the tip of a stepped pin 2g that protrudes from the bottom plate 2e in the Z2 direction. Above the control circuit board 4 (in the Z2 direction), the drive circuit board 51 is arranged 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 that fit together in the first direction Z.

As shown in FIG. 2, an output connector 56 is disposed at the X1 side end of each drive circuit board 51. Wiring 57 connected to the output connector 56 is passed through a noise removal ring 58, pulled out to the X1 side through a wiring hole 94 provided in the reinforcing member 9, and connected to an external output connector 59 provided on the second interface panel 24. When the manipulator-side connector is connected to the external output connector 59, power is supplied from the controller 1 to the manipulator.

(Reinforcing member)
FIG. 4 is an exploded perspective view of the reinforcing member 9 and 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. FIG. 5 is an explanatory diagram showing a method of attaching the reinforcing member 9 to the housing 2. As shown in FIG. 2, the reinforcing member 9 is bridged between the power supply cover 10 and the side frame 28 and extends along the top plate 2f. As shown in FIG. 3, the Z2-side end of the reinforcing member 9 (a bent plate portion 91b described later) is located closer to the Z2 side (top plate 2f) than the Z2-side edge of the drive circuit board 51. In this embodiment, the Z2-side end of the reinforcing member 9 is located approximately 3 mm closer to the Z2 side than the Z2-side edge of the drive circuit board 51 and is in contact with the inner surface (Z1-side surface) of the top plate 2f.

As shown in Figures 4 and 5, the power supply cover 10 includes an upper cover plate 10a that surrounds the power supply unit 7 from the Z2 side, a side cover plate 10b that surrounds the power supply unit 7 from the Y2 side, a mounting plate portion 10c that bends from the Y1-side end of the upper cover plate 10a toward the Z2 side and is fixed to the first side plate 2c, and a mounting plate portion 10d that bends from the Z1-side end of the side cover plate 10b toward the Y2 side and is fixed to the bottom plate 2e. The Y1-side end of the reinforcing member 9 is screwed to the upper cover plate 10a. The side frame 28 includes a reinforcing member fixing portion 30 that bends from the Z2-side edge of the linear frame 29 toward the Y1 side. The Y2-side end of the reinforcing member 9 is screwed to the reinforcing member fixing portion 30. Therefore, the reinforcing member 9 spans between the side frame 28 and the power supply cover 10.

As shown in Figure 4, the reinforcing member 9 is constructed by assembling two members: a first member 91 having a reinforcing plate portion 90 parallel to the YZ plane, and a second member 92 spanning between the power supply cover 10 and the side frame 28. The first member 91 has ventilation holes 93 and wiring holes 94 that penetrate the reinforcing plate portion 90. The ventilation holes 93 are circular and are arranged at regular intervals in the third direction Y.
3, when the reinforcing member 9 is attached to the housing 2, the reinforcing plate portion 90 with the ventilation holes 93 formed therein faces the fan 8 attached to the rear plate 2b and the ventilation holes 2i formed in the front plate 2a. Therefore, when the fan 8 is driven, external air (cooling air) taken into the housing 2 through the ventilation holes 2i is blown to the drive circuit board unit 5 via the ventilation 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 exhausted to the outside of the housing 2 via the fan 8.

As shown in FIG. 4 , the first member 91 includes bent plate portions 91a and 91b bent toward the X2 side from the Z1-side edge and the Z2-side edge, respectively, of the reinforcing plate portion 90, which is elongated in the third direction Y. The first member 91 also includes bent plate portions 91c and 91d bent toward the X2 side from the Y1-side edge and the Y2-side edge, respectively, of the reinforcing plate portion 90, an attachment plate portion 91e extending toward the Y1 side from the Z1-side end of the bent plate portion 91c, and an attachment plate portion 91f extending toward the Y2 side from the Z1-side end of the bent plate portion 91d. Mounting holes are provided in the attachment plate portions 91e and 91f for screwing the first member 91 to the second member 92.

The second member 92 includes a flat plate portion 92a that abuts the bent plate portion 91a and mounting plate portions 91e and 91f of the first member 91 from the Z1 side, and a protruding portion 92b that protrudes from the X1-side edge of the plate portion 92a. The second member 92 also includes bent plate portions 92c and 92d that are bent toward the Z1 side from the Y1-side and Y2-side edges of the plate portion 92a, respectively, a mounting plate portion 92e that extends toward the Y1 side from the Z1-side end of the bent plate portion 92c, and a mounting plate portion 92f that extends toward the Y2 side from the Z1-side end of the bent plate portion 92d.

The first member 91 has a notch 95 formed by cutting the bent plate portion 91a and reinforcing plate portion 90 on the Z2 side. When 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 to both ends of the plate portion 92a of the second member 92 in the third direction Y, the notch 95 and the plate portion 92a form a wiring hole 94. The protrusion 92b of the second member 92 extends from the Z1-side edge of the wiring hole 94 toward the X1 side. A binding member 96 is fixed to the protrusion 92b to bind the wiring 57 of the drive circuit board unit 5 that passes through the wiring hole 94.

When attaching the reinforcing member 9 to the housing 2, as shown in FIG. 5 , the second member 92 is separated from the first member 91 and placed between the side frame 28 and the power supply cover 10. At this time, the mounting plate portion 92f of the second member 92 is abutted against the reinforcing member fixing portion 30 from the Z2 side and screwed, and the mounting plate portion 92e of the second member 92 is abutted against the power supply cover 10 from the Z2 side and screwed. The wiring 57 connected to the output connectors 56 of each drive circuit board 51 is then passed through the noise reduction rings 58 and bundled with the bundling member 96, which is then screwed to the protrusion 92b. The first member 91 is then screwed to the second member 92 from the Z2 side. The wiring positioned on the protrusion 92b via the bundling member 96 is then housed in the notch 95. The ends of the bundled wiring 57 are connected to the external output connector 59.

(Main effects of this embodiment)
As described above, the controller 1 of this embodiment includes a housing 2 having a bottom plate 2e and a top 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 with the top plate 2f, which is parallel to the XY plane. The reinforcing member 9 is a beam member extending along the top plate 2f inside the housing 2 and includes a reinforcing plate portion 90 parallel to the YZ plane (i.e., the plane intersecting with the top plate 2f). The bent plate portion 91b constituting the Z2-side end of the reinforcing member 9 is located closer to the top plate 2f (Z2 side) than the edge of the drive circuit board 51 on the top plate 2f side (Z2 side). The reinforcing plate portion 90 is provided with a wiring hole 94 through which wiring 57 connected to the drive circuit board 51 passes, and a vent hole 93.

As such, in this embodiment, a reinforcing member 9 extending along the top plate 2f is disposed inside the housing 2 that houses the drive circuit board 51. The reinforcing member 9 includes a reinforcing plate portion 90 that intersects with the top plate 2f, providing high rigidity against loads from the top plate 2f side. This prevents deformation of the housing 2 and prevents the top plate 2f from bending toward the bottom plate 2e. Furthermore, because the reinforcing member 9 can support the top plate 2f on the top plate 2f side (Z2 side) of the drive circuit board 51, it is possible to prevent the top plate 2f from coming into contact with the drive circuit board 51 even if the top plate 2f bends. This prevents or reduces malfunctions in the drive circuit board 51 caused by deformation of the housing 2.

In addition, in this embodiment, the reinforcing plate portion 90 is provided with ventilation holes 93 and wiring holes 94. This allows the reinforcing member 9 to be lightweight even when its height in the Z direction is increased to increase its rigidity, thereby preventing an increase in the weight of the controller 1 due to the reinforcement of the housing 2. Furthermore, providing the ventilation holes 93 prevents the reinforcing member 9 from blocking the external air (cooling air) flowing from the ventilation holes 2i toward the drive circuit board 51. Alternatively, providing the wiring holes 94 allows the wiring 57 connected to the drive circuit board 51 to be bundled, preventing the wiring 57 from becoming disorganized within the housing 2. This prevents damage to the wiring 57 caused by rubbing due to external forces such as vibration, and also prevents the cooling air from being blocked by loose wiring 57.

In this embodiment, the reinforcing plate portion 90 is provided with wiring holes 94 and ventilation holes 93, but a configuration in which only one of the wiring holes 94 and ventilation holes 93 is provided may also be adopted.

In this 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 includes a notch 95 cut out of the reinforcing plate portion 90, and the notch 95 and the second member 92 form a wiring hole 94. In this way, dividing the reinforcing member 9 into two members and providing the notch 95 that forms the wiring hole 94 on the joint surface of the two members makes it easy to route the wiring 57. For example, after fixing the second member 92 to the housing 2, the wiring 57 connected to the drive circuit board 51 can be positioned so that it is housed in the notch 95 of the first member 91, and the first member 91 can be screwed to the second member 92.

In this embodiment, the second member 92, which does not have the reinforcing plate portion 90 and the notch portion 95, is first fixed to the housing 2, and the wiring 57 is positioned on the second member 92 using the binding member 96. After that, the first member 91 is fixed to the second member 92, and the wiring 57 is accommodated in the notch portion 95. However, a configuration in which the member fixed to the housing 2 first has the reinforcing plate portion 90 and the notch portion 95 may also be adopted.

In this embodiment, the wiring 57 is passed through a noise reduction ring 58 disposed between the drive circuit board 51 and the reinforcing member 9. This suppresses noise superimposed on the current supplied from the drive circuit board 51. Furthermore, the reinforcing member 9 is divided into two components, and the wiring hole 94 is formed by assembling the two components. This eliminates the need to make the wiring hole 94 large enough for the noise reduction ring 58 to pass through. This prevents the shape of the reinforcing member 9 from being restricted by the noise reduction ring 58. Similarly, even if the connector on the drive circuit side is large, the shape of the reinforcing member 9 can be avoided from being restricted.

In this embodiment, a bundling member 96 for bundling the wiring 57 is provided, and the wiring 57 is positioned in the wiring hole 94 by fixing the bundling member 96 to the reinforcing member 9. That is, in this 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, the wiring 57 can be easily positioned in the wiring hole 94, and the bundling member 96 protects the wiring 57 from hitting the edge of the metal plate member, such as the edge of the wiring hole 94. This reduces the risk of damage to the wiring 57. Furthermore, since the bundling member 96 is used to position the wiring 57 relative to the second member 92, which is fixed to the housing 2 first among the first member 91 and the second member 92, the positioning of the wiring 57 is easy. Furthermore, since the bundling member 96 can hold the wiring 57 immobile, the assembly of the reinforcing member 9, which is divided into two parts, is easy.

In this embodiment, the housing 2 includes a power supply unit 7 and a power supply cover 10 that surrounds the X1 side of the power supply unit 7. The housing 2 includes a first side plate 2c to which the power supply cover 10 is fixed, a second side plate opposite the first side plate 2c, and a side frame 28 that reinforces the second side plate 2d. The reinforcing member 9 spans between the side frame 28 and the power supply cover 10. In this way, by fixing the reinforcing member 9 to the frame, which has high rigidity among the members that make up the housing 2, the rigidity of the housing 2 can be increased. Furthermore, by using the power supply cover 10, the reinforcing member 9 can be installed even when there is not enough space around the power supply unit 7 to place it.

In this embodiment, the housing 2 has a fan 8 positioned opposite the reinforcing plate 90. The reinforcing plate 9 extends in a direction (third direction Y) that intersects with the drive circuit board 51, and a vent hole 93 is provided in the reinforcing plate 90. Multiple drive circuit boards 51 are arranged in parallel between the fan 8 and the reinforcing member 9. In this arrangement, when the fan 8 is driven, external air (cooling air) taken in through the vent holes 2i is blown through the vent holes 93 into the gaps in the drive circuit board 51, and the cooling air that has passed through the gaps in the drive circuit board 51 is exhausted via the fan 8. Therefore, the drive circuit board 51 can be effectively cooled.

1...controller, 2...housing, 2a...front panel, 2b...rear panel, 2c...first side panel, 2d...second side panel, 2e...bottom panel, 2f...top panel, 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...top cover plate, 10b...side cover plate, 10c, 10d...mounting plate portion, 11...fuse, 12...noise filter, 21...first case, 22...second case, 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 section, 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 elimination ring, 59... external output connector, 61, 62... drive circuit power supply board, 63... support plate, 64... capacitor, 7 0...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 portion, 92c, 92d...Bent plate portion, 92e, 92f...Mounting plate portion, 93...Ventilation hole, 94...Wiring hole, 95...Notch portion, 96...Binding member, X...Second direction, Y...Third direction, Z...First direction

Claims (6)

a housing having a top plate and a bottom plate, a substrate disposed inside the housing, and a reinforcing member fixed to the housing;
the substrate extends in a direction intersecting the upper plate,
the reinforcing member includes a reinforcing plate portion that extends along the upper plate inside the housing and intersects with the upper plate,
At least a portion of the reinforcing member is located closer to the upper plate than an edge of the substrate on the upper plate side,
the reinforcing plate portion is provided with at least one of a wiring hole through which a wiring connected to the substrate passes and an air vent ;
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 is fixed to the housing, and the other of the first member and the second member is fixed to the one of the first member and the second member;
The controller is characterized in that the first member has a notch portion formed by cutting out the reinforcing plate portion, and the notch portion and the second member form the wiring hole . a noise reduction ring disposed between the substrate and the reinforcing member;
The controller according to claim 1 , wherein the wiring is passed through the noise reduction ring. a bundling member for bundling the wiring,
3. The controller according to claim 1 , wherein the wiring is positioned in the wiring hole by fixing the bundling member to the reinforcing member. 4. The controller according to claim 3 , wherein the binding member is fixed to one of the first member and the second member. a housing having a top plate and a bottom plate, a board disposed inside the housing, a reinforcing member fixed to the housing, a power supply unit disposed within the housing, and a power supply cover enclosing at least a portion of the power supply unit ;
the substrate extends in a direction intersecting the upper plate,
the reinforcing member includes a reinforcing plate portion that extends along the upper plate inside the housing and intersects with the upper plate,
At least a portion of the reinforcing member is located closer to the upper plate than an edge of the substrate on the upper plate side,
the reinforcing plate portion is provided with at least one of a wiring hole through which a wiring connected to the substrate passes and an air vent ;
the housing includes a first side plate to which the power supply cover is fixed, a second side plate facing the first side plate, and a frame reinforcing the second side plate;
The controller , wherein the reinforcing member is bridged between the frame and the power supply cover . a housing having a top plate and a bottom plate, a substrate disposed inside the housing, and a reinforcing member fixed to the housing;
the substrate extends in a direction intersecting the upper plate,
the reinforcing member includes a reinforcing plate portion that extends along the upper plate inside the housing and intersects with the upper plate,
At least a portion of the reinforcing member is located closer to the upper plate than an edge of the substrate on the upper plate side,
the reinforcing plate portion is provided with at least one of a wiring hole through which a wiring connected to the substrate passes and an air vent ;
a fan disposed in the housing at a position facing the reinforcing plate portion;
the reinforcing member extends in a direction intersecting the substrate, and the ventilation hole is provided in the reinforcing plate portion;
The controller is characterized in that a plurality of the substrates are arranged in parallel between the fan and the reinforcing member .