CN-122028350-A - Controller for controlling a power supply

Abstract

The controller (1) has a first heat radiation member (9A) fixed to a drive circuit board (7) provided with a heating element (10) and a first connector (11), a control circuit board (4) including a second connector (12) fitted with the first connector in a first direction (Z) and intersecting the drive circuit board, and a board holder (8) supporting the drive circuit board. The substrate holder includes a pair of second frames (82A, 82B) extending parallel to the third direction (Y) on both sides of the second direction (X) of the drive circuit substrate (7). The first heat dissipation member (9A) includes a planar portion (90A) facing the drive circuit board (7) and the heating element (10) in the third direction (Y), and a pair of attachment portions (92, 93) protruding to both sides of the second direction (X) of the drive circuit board (7) and fixed to the second frames (82A, 82B).

Inventors

• SAICHI MASAYOSHI

Assignees

• 尼得科仪器株式会社

Dates

Publication Date

20260512

Application Date

20251031

Priority Date

20241112

Claims (15)

1. 1. A controller, characterized by comprising: A first substrate provided with a heating element and a first connector; A heat dissipation member fixed to the first substrate; A second substrate including a second connector and intersecting the first substrate, the second connector being fitted to the first connector in a first direction along a surface direction of the first substrate; a substrate holder supporting the first substrate, and A support member that supports the second substrate and the substrate holder, When the direction intersecting the first direction and along the plane direction is set as a second direction and the direction intersecting the first direction and intersecting the second direction is set as a third direction, The substrate holder includes a pair of support frames extending parallel to the third direction on both sides of the second direction of the first substrate, The heat dissipation member includes a planar portion facing the first substrate and the heat generating element in the third direction, and a pair of mounting portions protruding toward both sides of the first substrate in the second direction and fixed to the pair of support frames.
2. 2. The controller according to claim 1, wherein, When the side of the first connector opposite to the side of the second connector is set as the side of the first direction, The pair of mounting portions abut the pair of support frames from one side in the first direction, thereby positioning the first substrate in a position within a range where the first connector is not excessively inserted into the second connector but is not insufficiently inserted.
3. 3. The controller according to claim 1, wherein, The fixing member that fixes the pair of mounting portions to the support frame is made of conductive metal.
4. 4. The controller according to claim 1, wherein, The heat dissipation member includes a planar portion facing the first substrate and the heat generating element in the third direction, and a curved portion curved from an end edge of the planar portion in the first direction toward the third direction and extending straight in the second direction, The pair of mounting portions are integrally formed at both ends of the bent portion in the second direction.
5. 5. The controller according to claim 4, wherein, The bending portion is bent in a side opposite to a direction from the planar portion toward the first substrate.
6. 6. The controller according to claim 1, wherein, The heat dissipation member includes: A first member including a planar portion opposed to the first substrate and the heating element in the third direction, and a fin protruding from the planar portion in the third direction and extending in the second direction, and A second member extending straight in the second direction and fixed to the fin, The pair of mounting portions are both end portions of the second member in the second direction.
7. 7. The controller according to claim 6, wherein, The fin protrudes in a side opposite to a direction from the planar portion toward the first substrate.
8. 8. The controller according to claim 1, wherein, When the side of the first connector opposite to the side of the second connector is set as the side of the first direction, At least one of the pair of support frames includes a first plate portion extending in the first direction and a second plate portion bent in a second direction from an end portion of the first plate portion on the other side in the first direction, At least one of the pair of attachment portions abuts against an end edge of one side of the first plate portion in the first direction and is fixed to the second plate portion by a first screw.
9. 9. The controller according to claim 8, wherein, The first screw is an anti-drop screw.
10. 10. The controller according to claim 1, wherein, When the side of the first connector opposite to the side of the second connector is set as the side of the first direction, At least one of the pair of support frames includes a third plate portion extending in the first direction and a fourth plate portion bent in the second direction from an end portion of the third plate portion on one side of the first direction, At least one of the pair of attachment portions is sandwiched between a plate-like member overlapping the fourth plate portion from one side in the first direction and the fourth plate portion, The plate-like member is fixed to the fourth plate portion by a second screw.
11. 11. The controller according to claim 10, wherein, The first substrate to which the heat dissipation member is fixed is arranged in plurality along the third direction, The other of the pair of attachment portions is sandwiched between the fourth plate portion and the plate-like member.
12. 12. The controller according to claim 10, wherein, The plate-like member includes a positioning portion that positions the other of the pair of mounting portions in the third direction.
13. 13. The controller according to claim 10, wherein, An anti-drop washer disposed between the plate-like member and the fourth plate portion is attached to the second screw.
14. 14. The controller according to claim 1, wherein, Comprising a pair of sliders extending in the first direction on both sides of the second direction of the first substrate, the sliders having grooves into which ends of the first substrate are inserted, The substrate holder includes a pair of first frames extending parallel to the third direction at positions spaced apart from the pair of support frames in the first direction, The slider is fixed to the pair of support frames and the pair of first frames.
15. 15. The controller according to claim 1, wherein, The edge portion of the first substrate in the first direction includes a first portion where the first connector is arranged, and a second portion protruding toward the second substrate side than the first portion, The second portion abuts the second substrate before the first connector is over-inserted into the second connector.

Description

Controller for controlling a power supply Technical Field The present invention relates to a controller. Background Patent document 1 describes a controller for controlling a robot, which includes a control circuit board and a plurality of driving circuit boards connected to the control circuit board. The control circuit board is disposed in a posture along the bottom surface of the case. The plurality of driving circuit boards are arranged in a vertical posture with respect to the control circuit board, and the connector mounted on the lower end of the driving circuit board is inserted into the connector arranged on the surface of the control circuit board, thereby realizing connection. The surface of each driving circuit board is provided with a power module having a large heat generation amount, and a metal heat sink is mounted so as to cover the power module. The controller of patent document 1 includes a substrate holder that holds a plurality of driving circuit substrates in an upright posture perpendicular to a control circuit substrate. The substrate holder includes a slider having a groove extending up and down, and a metal frame fixing the slider. A pair of sliders are inserted into the opposite end portions of each drive circuit board in the width direction. The substrate holder has a receiving portion that receives a lower end portion of the driving circuit substrate inserted into the groove of the slider. The drive circuit board is abutted against the receiving portion of the board holder from above, and is pressed from above by a leaf spring (conductive member) mounted so as to straddle over the heat dissipation member. The two ends of the plate spring are fixed on the metal frame. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2022-148094 Disclosure of Invention In patent document 1, as described above, the drive circuit board is restrained from being in a floating state by the elasticity of the leaf spring mounted so as to straddle the upper side of the heat radiating member. However, if vibration or impact is applied from the outside during transportation of the controller, the plate spring is elastically deformed, and the contact portion between the heat radiating member and the plate spring and the contact portion between the heat radiating member and the metal frame of the substrate holder are worn, and there is a concern that metal wear powder is generated. If metal abrasion powder is scattered around substrate components such as a drive circuit substrate and a control circuit substrate, short circuits and hole clogging of these substrates may occur, and thus, the controller may be failed. In view of the above problems, an object of the present invention is to suppress generation of metal abrasion powder caused by vibration or impact from the outside around a drive circuit board, and to suppress malfunction of a controller due to the abrasion powder. In order to solve the above problems, the controller of the present invention includes a first substrate on which a heat generating element and a first connector are disposed, a heat radiating member fixed to the first substrate, a second substrate including a second connector intersecting the first substrate, the second connector being fitted to the first connector in a first direction along a surface direction of the first substrate, a substrate holder supporting the first substrate, and a support member supporting the second substrate and the substrate holder, the direction intersecting the first direction and the surface direction being a second direction, and the direction intersecting the first direction and the second direction being a third direction, the substrate holder including a pair of support frames extending parallel to the third direction on both sides of the second direction of the first substrate, the heat radiating member including a pair of support frames projecting from both sides of the first substrate and the surface portion of the first substrate and the first substrate in the third direction, and the pair of support frames being fixed to both sides of the first substrate and the second substrate. Drawings Fig. 1 is a schematic plan view showing the arrangement of a substrate unit and a control circuit substrate within a controller case, and a plan view of the substrate unit. Fig. 2 is a partial cross-sectional view showing the arrangement of a substrate unit and a control circuit substrate within a controller housing. Fig. 3 is a perspective view of the substrate unit. Fig. 4 is a cross-sectional view of the substrate unit of fig. 3 taken along the YZ plane. Fig. 5 is a cross-sectional view of the substrate unit of fig. 3 taken along the XZ plane. Fig. 6 is an exploded perspective view of the substrate holder, the driving circuit substrate, and the first heat sink member. Fig. 7 is an exploded perspective view of the substrate holder, the driving circuit substrate