MOTOR DRIVE DEVICE

• US 20190312486A1
• Filed: 04/05/2019
• Published: 10/10/2019
• Est. Priority Date: 04/09/2018
• Status: Active Grant

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: YAMAMOTO, Kazuhiro, TAKESHITA, Makoto
• Granted Patent: US 11,264,867 B2
• Time in Patent Office: Days
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132
• CPC Class Codes: H02K 7/14 Structural association with mechanical loads, e.g. with hand-held machine tools or fans with fan or impeller for cooling the machine H02K9/06
• CPC Class Codes: H05K 7/20172 Fan mounting or fan specifications

Abstract

An object is to provide a motor drive device in which the maintenance accessibility of a fan motor is excellent. A motor drive device includes a second turning engagement unit which is engaged with a first turning engagement unit, which is engaged with the first turning engagement unit and is disengaged therefrom by movement of a first fan unit in a direction intersecting a horizontal direction and in which in an engaged state, where the second turning engagement unit is engaged with the first turning engagement unit, the second turning engagement unit pivotally supports the turning movement of the first fan unit, and in the engaged state, the first fan unit is engaged with a housing such that the first fan unit can be moved to be turned about a predetermined turning axis both to a non-fitting position in which a first connector is not fitted to a second connector and to a fitting position in which the first connector is fitted to the second connector.

Claims

1. A motor drive device comprising:

a housing;

a first fan unit which is removably arranged in an upper surface or a lower surface of the housing and which includes a first fan motor, a first connector that is electrically connected to the first fan motor and a first turning engagement unit that engages with the housing; and

a printed circuit board which is arranged so as to be stored in the housing and which includes a second connector that is fitted to the first connector in a state where the first fan unit is fitted,

wherein the housing includes a second turning engagement unit which engages with the first turning engagement unit.

2. The motor drive device according to claim 1, wherein the second turning engagement unit is engaged with the first turning engagement unit and is disengaged therefrom by movement of the first fan unit in a direction intersecting a horizontal direction, in an engaged state where the second turning engagement unit is engaged with the first turning engagement unit, the second turning engagement unit pivotally supports a turning movement of the first fan unit and

in the engaged state, the first fan unit is engaged with the housing such that the first fan unit can be moved to be turned about a predetermined turning axis both to a non-fitting position in which the first connector is riot fitted to the second connector and to a fitting position in which the first connector is fitted to the second connector.

7. The motor drive device according to claim 1, wherein at least one of the first connector and the second connector includes a plate-shaped contact, and

at least one of the third connector and the fourth connector includes a plate-shaped contact.

8. The motor drive device according to claim 1, wherein at least one of the first connector and the second connector includes a pad-shaped contact, and

at least one of the third connector and the fourth connector includes a pad-shaped contact.

11. The motor drive device according to claim 1, wherein the first fan unit includes a first fan cover, and

the first fan cover includes a fitting portion which is fitted to the housing.

12. The motor drive device according to claim 1, wherein the first fan unit is removable with respect to the housing from obliquely forward of the housing.

13. The motor drive device according to claim 2, wherein the second fan unit, is formed such that in a state where the first fan unit is removed from the housing, a fixing portion for fixing the second fan unit to the housing can be accessed from a front surface of the motor drive device and that the fixing by the fixing portion can be released.

14. The motor drive device according to claim 13, wherein the second fan unit includes a second fan cover, and

the fixing portion is partially covered by the second fan cover.

17. The motor drive device according to claim 1, wherein a first fitting surface which is a contact root surface of the first connector fitted to the second connector and/or a second fitting surface which is a contact root surface of the third connector fitted to the fourth connector is located on a plane that is substantially a same as a turning plane including a turning axis.

18. The motor drive device according to claim 1, wherein at least one of the first connector and the second connector includes a connector holding unit which movably holds the connector so as to absorb a backlash.

3. A motor drive device comprising:

a housing;

a first fan unit which is removably arranged in an upper surface or a lower surface of the housing and which includes a first fan motor, a first connector that is electrically connected to the first fan motor, a third connector that is electrically connected to the first connector and a first turning engagement unit that engages with the housing;

a second fan unit which is arranged side by side with the first fan unit in a horizontal direction and which includes a second fan motor and a fourth connector that is electrically connected to the second fan motor; and

a printed circuit board which is arranged so as to be stored in the housing and which includes a second connector that is fitted to the first connector in a state where the first fan unit is fitted,

wherein the housing or the second fan unit includes a second turning engagement unit which engages with the first turning engagement unit.

4. The motor drive device according to claim 3, wherein the second turning engagement unit is engaged with the first turning engagement unit and is disengaged therefrom by movement of the first fan unit in a direction intersecting the horizontal direction, in an engaged state where the second turning engagement unit is engaged with the first turning engagement unit, the second turning engagement unit pivotally supports a turning movement of the first fan unit and

in the engaged state, the first fan unit is engaged with the housing such that the first fan unit can be moved to be turned about a predetermined turning axis both to a non-fitting position in which the first connector is not fitted to the second connector and in which the third connector is not fitted to the fourth connector and to a fitting position in which the first connector is fitted to the second connector and in which the third connector is fitted to the fourth connector.

9. The motor drive device accordion to claim 3, wherein a first fitting direction which is a direction of movement of the first connector when the first connector is fitted to the second connector and a second fitting direction which is a direction of movement of the third connector when the third connector is fitted to the fourth connector are different from each other.

10. The motor drive device according to claim 3, wherein a first fitting direction which is a direction of movement of the first connector when the first connector is fitted to the second connector and a second fitting direction which is a direction of movement of the third connector when the third connector is fitted to the fourth connector are substantially a same as each other.

15. The motor drive device according to claim 3, wherein the housing includes

a storage region which stores the first fan unit arranged in the fitting position and which forms part of a movement path through which the second fan unit is fitted and removed in a state where the first fan unit is removed.

16. The motor drive device according to claim 3, wherein the housing includes, in an upper surface, an inclined surface portion which guides at least one of the first fan unit and the second fan unit from obliquely forward of the housing toward backward.

19. The motor drive device according to claim 3, wherein at least one of the third connector and the fourth connector includes a connector holding unit which movably holds the connector so as to absorb a backlash.

5. A motor drive device comprising:

a housing;

a first fan unit which is removably arranged in an upper surface or a lower surface of the housing and which includes a first connector, a third connector that is electrically connected to the first connector and a first turning engagement unit that engages with the housing;

a second fan unit which is arranged side by side with the first fan unit in a horizontal direction and which includes a second fan motor and a fourth connector that is electrically connected to the second fan motor; and

a printed circuit board which is arranged so as to be stored in the housing and which includes a second connector that is fitted to the first connector in a state where the first fan unit is fitted,

wherein the housing or the second fan unit includes a second turning engagement unit which engages with the first turning engagement unit.

6. The motor drive device according to claim 5, wherein the second turning engagement unit is engaged with the first turning engagement unit and is disengaged therefrom by movement of the first fan unit in a direction intersecting the horizontal direction, in an engaged state where the second turning engagement unit is engaged with the first turning engagement unit, the second turning engagement unit pivotally supports a turning movement of the first fan unit and

in the engaged state, the first fan unit is engaged with the housing such that the first fan unit can be moved to be turned about a predetermined turning axis both to a non-fitting position in which the first connector is not fitted to the second connector and in which the third connector is not fitted to the fourth connector and to a fitting position in which the first connector is fitted to the second connector and in which the third connector is fitted to the fourth connector.