Motor device

Patent metadata

Field	Value
Publication number	US-9949386-B2
Application number	US-201715607987-A
Country	US
Kind code	B2
Filing date	May 30, 2017
Priority date	Jul 1, 2016
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A case includes a base and a cover and defines an accommodation space therein. The base has a first through hole through which a magnetoelectric conversion element, which is mounted on a circuit board, is opposed to a sensor magnet of a motor. A connector includes a terminal and a housing, which supports the terminal. The connector has a first protrusion projected toward the base for positioning. The first protrusion of the connector has a tip end inserted through a second through hole of the printed circuit board and further inserted in a hole portion of the base. A second protrusion of the base is projected toward the printed circuit board and is inserted in a third through hole of the printed circuit board for positioning.

First claim

What is claimed is:

1. A motor device comprising:
a case including a metallic housing, a base and a cover, the base having a first through hole, a surface, and a cover mounting surface, which is on an opposite side of the surface, the cover mounted to the cover mounting surface and defining an accommodation space with the base;
a motor including a stator, a rotor, and a sensor magnet, the rotor rotational inside the stator, the sensor magnet mounted on a face of the rotor on a side of the base for detection of a rotary position of the rotor, the motor located on a side of the surface of the base;
a circuit board located in the accommodation space and including a printed circuit board and a plurality of electronic components forming a circuit to drive the motor, the printed circuit board having a one side, which is opposed to the base, and a rear side, which is an opposite surface of the one side in a thickness direction, the electronic components mounted on both the one side and the rear side of the printed circuit board, the electronic components including a magnetoelectric conversion element mounted on the one side of the printed circuit board and opposed to the sensor magnet through the first through hole of the base; and
a connector including a terminal and a housing, the terminal mounted on the printed circuit board, the housing including a body located mainly on a side of the rear side of the printed circuit board and supporting the terminal, wherein
the housing of the connector has a first protrusion projected from the body toward the base for positioning,
the printed circuit board has a second through hole and a third through hole, the first protrusion of the connector inserted in the second through hole,
the base has a hole portion and a second protrusion,
the first protrusion of the connector has a tip end inserted through the second through hole of the printed circuit board and further inserted in the hole portion of the base, and
the second protrusion of the base is projected toward the printed circuit board and is inserted in the third through hole for positioning;
wherein the second through hole is formed on a one-end side of the printed circuit board, and the third through hole is formed on an other-end side of the printed circuit board in a longitudinal direction of the printed circuit board, which is perpendicular to the thickness direction.

2. The motor device according to claim 1 , wherein
the third through hole of the printed circuit board is in an elongated hole shape,
the third through hole has a first length in a circumferential direction centered on the second through hole of the printed circuit board,
the third through hole has a second length in a radial direction centered on the second through hole, and
the second length is larger than the first length.

3. The motor device according to claim 1 , wherein the case has an opening defined by the metallic housing, the base and the cover, the connector is configured to electrically relay the printed circuit board with an external device, the connector is partially projected through the opening to an outside of the case, the motor device further comprising: a sealing member interposed between a periphery the opening, which is defined by an inner surface of the case, and a portion of the body of the connector, which is opposed to the periphery of the opening, and the sealing member is configured to air tightly seal the accommodation space.

4. The motor device according to claim 3 , wherein
the base includes a groove portion in the periphery of the opening,
the sealing member is equipped to the groove portion,
the groove portion has a bottom surface, a first inclined surface, and a second inclined surface,
the first inclined surface is connected to one end of the bottom surface, and
the second inclined surface is connected to an other end of the bottom surface on an opposite side of the one end.

5. The motor device according to claim 1 , wherein
the stator includes a stator core and a winding, which is wound around the stator core,
the connector is entirely located in the accommodation space, and
the terminal is electrically connected with the winding.

6. The motor device according to claim 1 , wherein
the motor device is equipped to a valve timing control apparatus configured to control a valve timing of an internal combustion engine by using rotation of the motor.

Assignees

• Denso Corp

Inventors

• Matsuyama Takuya
• Hoshino Takashi
• Watanabe Kazuyuki

Classifications

• F16F15/08

  with rubber springs {(grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38); with springs made of rubber and metal (arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604)} · CPC title

• H05K5/0056 Primary

  characterized by features for protecting electronic components against vibration and moisture, e.g. potting, holders for relatively large capacitors · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K11/30 Primary

  Structural association with control circuits or drive circuits · CPC title

• H02K11/215

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title