Motor device

Patent metadata

Field	Value
Publication number	US-9948160-B2
Application number	US-201715608381-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 base of a case has an inner groove portion, which surrounds a circuit board, and an outer groove portion. A first projected portion of a connector is inserted in the inner groove portion via a first seal portion. A second projected portion of the connector is inserted in the outer groove portion via a second seal portion. The first seal portion and the second seal portion are formed of the same material and are interposed between a periphery of an opening of the case and the connector. The first seal portion in the inner groove portion is in contact with the first projected portion of the connector to water tightly seal an accommodation space formed in the case. The second seal portion in the outer groove portion is in contact with the second projected portion of the connector to restrict vibration of the connector.

First claim

What is claimed is:

1. A motor device comprising:
a case including a base and a cover, the base formed of a metallic material having a one side and a rear side, which is on an opposite of the one side, the cover defining an accommodation space with the base, the base and the cover defining an opening of the case;
a motor located at the one side of the base;
a circuit board located in the accommodation space and electrically connected with the motor, the circuit board including a printed circuit board and an electronic component, which is mounted on the printed circuit board;
a connector including a plurality of terminals and a housing, the terminals mounted on the printed circuit board, the housing supporting the terminal and partially projecting through the opening of the case to an outside; and
a sealing member interposed at an opposed portion between the base and the cover and at an opposed portion between a periphery of the opening of the case and the housing of the connector, wherein
the base includes an inner groove portion and an outer groove portion,
the inner groove portion is formed in the rear side of the base to surround both the circuit board and a connecting portion between the circuit board and the motor,
the outer groove portion is formed in the rear side of the base and located outside the inner groove portion,
the outer groove portion is located at an opposed portion at which the base is opposed to the housing of the connector,
the housing of the connector includes a first projected portion and a second projected portion,
the first projected portion is inserted in an inserted portion of the inner groove portion, which is opposed to the housing,
the second projected portion is inserted in the outer groove portion,
the sealing member includes a first seal portion and a second seal portion, which are formed of a same material,
the first seal portion is equipped to the inserted portion and is in contact with the first projected portion to water-tightly seal the accommodation space, and
the second seal portion is equipped to the outer groove portion and is in contact with the second projected portion to restrict vibration of the connector.

2. The motor device according to claim 1 , wherein
the inserted portion has a bottom surface defining a reference of a height,
the base has a first portion and a second portion,
the first portion is located between the inserted portion and the outer groove portion and is connected with an outer side of the inserted portion,
the second portion is connected with an inner side of the inserted portion, and
the first portion is lower than the second portion.

3. The motor device according to claim 1 , wherein
in a width direction, which is perpendicular to an extended direction of the inserted portion, the outer groove portion has a widest portion having a largest width, and the widest portion is wider than the inserted portion.

4. The motor device according to claim 3 , wherein
a center of the second projected portion is located outside a center of the widest portion of the outer groove portion in the width direction.

5. The motor device according to claim 1 , wherein
the rear side of the base has a portion located between the inserted portion and the outer groove portion and defines a reference of a depth, and
the inserted portion is deeper than the outer groove portion.

6. The motor device according to claim 1 , wherein
in a width direction perpendicular to an extended direction of the inserted portion, the second projected portion is thinner than the first projected portion.

7. 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
• Watanabe Kazuyuki

Classifications

• H02K5/06

  Cast metal casings · CPC title

• H05K1/0209

  External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings · CPC title

• H02K33/10

  wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures · CPC title

• H02K7/20

  Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters · CPC title

• H05K1/0228

  Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors (balanced signal pairs H05K1/0245) · CPC title