Motor drive device

• US 11,264,867 B2
• Filed: 04/05/2019
• Issued: 03/01/2022
• Est. Priority Date: 04/09/2018
• Status: Active Grant

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: Yamamoto, Kazuhiro, Takeshita, Makoto
• Primary Examiner(s): Elnakib, Ahmed
• Application Number:
  US16/376,770
• Publication Number:
  US 20190312486A1
• Time in Patent Office: 1,061 Days
• Field of Search: 310 71, 310 89
• 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 recessed second turning engagement unit which engages with the first turning engagement unit, and an engagement end of the first turning engagement unit protrudes in a horizontal direction substantially perpendicular to a predetermined turning axis about which the first fan unit can be moved to be turned while the first turning engagement unit is engaged with the second turning engagement unit.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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 is located on a plane that is substantially a same as a turning plane including a turning axis.

7. 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.

8. The motor drive device according to claim 1, wherein

the second turning engagement unit pivotally supports a turning movement of the first fan unit.

9. 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,

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 not fitted to the second connector and to a fitting position in which the first connector is fitted to the second connector.

10. 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 protruding from the first fan 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 to pivotally support a turning movement of the first fan unit, and the pivotally supported turning movement of the first fan unit changes a direction of protrusion of the first turning engagement unit with respect to the housing.