JP2000201448A - Motor actuator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to miniaturize a motor actuator with high space efficiency, to fix a motor with a simple structure without play, and to cut the component and assembling costs. SOLUTION: This motor actuator is provided with a motor 3, a speed- reducing mechanism 5 which reduces the revolutions of the motor 3 and transmits the torque to an output shaft 6, a control circuit 8 which controls the run and stop of the motor 3 in compliance with the rotational position of the output shaft, and a connector 10 which connects the control circuit 8 to an external circuit. In this invention, the motor 3 is arranged between the control circuit 8 and the connector 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a motor actuator in which an output shaft is driven by a motor whose rotation stop position is controlled.

[0002]

2. Description of the Related Art Generally, a motor actuator is provided with a motor, a reduction mechanism for reducing the rotation of the motor and transmitting the rotation to an output shaft, and controlling switching of rotation / stop of the motor in accordance with the rotation position of the output shaft. And a connector for connecting the control circuit to an external circuit.

[0003] Conventionally, the contact pins of the connector and the conductive pattern of the control circuit are formed by an integral metal plate, and the motor is arranged at a position side by side with respect to the metal plate.
It was fixed by screwing or pressed and fixed by an elastic padding or the like.

[0004]

However, if the motor is arranged in a position side by side with respect to the control circuit and the connector as described above, the motor actuator becomes large in the lateral direction, and the mounting space increases. In addition, a member for fixing the motor without rattling is required independently, and the cost of parts and the cost of assembly are increased accordingly.

Accordingly, the present invention provides a motor actuator which is space-efficient and can be downsized, and which can fix a motor with a simple structure without play, thereby reducing parts and assembly costs. The purpose is to provide.

[0006]

In order to achieve the above object, a motor actuator according to the present invention comprises: a motor; a reduction mechanism for reducing the rotation of the motor and transmitting the rotation to an output shaft;
A motor actuator provided with a control circuit for controlling switching of rotation / stop of the motor in accordance with the rotation position of the output shaft, and a connector for connecting the control circuit to an external circuit; The motor is arranged between the control circuit and the connector.

The contact pins of the connector and the conductive pattern of the control circuit are formed by an integral metal plate including a conductive plate connecting between the two, and the motor is formed by a part of the conductive plate. It may be elastically supported.

[0008]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a rear cross-sectional view and a plan cross-sectional view of a motor actuator. The motor actuator is covered with a lower housing 1 and an upper housing 2 made of plastic.

A DC motor 3 is arranged in the housings 1 and 2, and the rotation of a worm gear 4 attached to its rotating shaft is reduced by a reduction gear group 5 and transmitted to an output shaft 6.

A substrate 7 made of an electrically insulating plastic is arranged along the inside of the lower housing 1, and on the surface of the substrate 7 at a position facing the back surface of the final large gear 5 a of the reduction gear group 5, A wiring pattern 8 for controlling switching of rotation / stop of the motor 3 is formed.

A conductive brush 9 that touches the wiring pattern 8 is attached to the back surface of the final gear 5a, and the power supply to the motor 3 is controlled on / off by the contact relationship. The switching of the rotation / stop of the motor 3 is controlled in accordance with the rotational position of.

A contact pin 11 of a connector 10 connected to an external circuit protrudes from an end of the substrate 7 farther from the wiring pattern 8, and the wiring pattern 8 and the contact pin 11 connect between the two. It is formed of an integral metal plate including the conductive plate 12 to be inserted, and is inserted into the substrate 7.

The motor 3 includes a wiring pattern 8 and a conductive plate 12.
And is elastically fixed to the substrate 7 using the conductive plate 12. Hereinafter, this portion will be described with reference to FIGS.

FIGS. 3 and 4 are a rear view and a plan view, respectively, showing a state in which the motor 3 is mounted on the substrate 7, and FIG. 5 is a perspective view. The motor 3 is formed in a substantially columnar shape, and a pair of terminals 13 protruding from the back surface thereof are tightly sandwiched between terminal holders 12a extending from the conductive plate 12 and bent.

As the conductive plate 12, a metal plate material having a spring property is used. When the terminal 13 is sandwiched between the terminal retainers 12a, the back side of the motor 3 is supported by the substrate 7. I have.

A terminal retainer 12a extending from the terminal 13 in a V-shape supports the intermediate portion of the motor 3 in a state of elastically holding the same.
Are supported on the substrate 7 in a stable state without play.

As shown in FIGS. 1 and 2, a receiver 15 for positioning the rotating shaft of the motor 3 is provided.
It is formed integrally with the lower housing 1 so as to protrude therefrom. By arranging the motor 3 between the wiring pattern 8 and the connector 10 in this manner, the motor actuator does not become large in the lateral direction, and a layout with good space efficiency can be obtained.

Further, since the motor 3 is supported by bending a part of the conductive plate 12 connecting the wiring pattern 8 and the contact pins 11 into a V-shape, an independent member for fixing the motor 3 is required. In addition, at the time of assembly, the motor 3 can be easily supported without screwing work or the like.

[0019]

According to the present invention, by arranging the motor between the control circuit and the connector, the motor actuator can be miniaturized with a space efficient layout, and the contact pins of the connector can be connected to the control circuit. The motor is elastically supported by a part of the conductive plate integrally formed with the conductive pattern of the control circuit, so that the motor can be fixed with a simple configuration without looseness, and component cost and assembly are reduced. Costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a rear sectional view of a motor actuator according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of the motor actuator according to the embodiment of the present invention.

FIG. 3 is a rear view showing a state in which a motor is mounted on the board according to the embodiment of the present invention.

FIG. 4 is a plan view showing a state in which a motor is attached to the substrate according to the embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which a motor is attached to the board according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 3 Motor 5 Reduction gear group 6 Output shaft 7 Substrate 8 Wiring pattern 10 Connector 11 Contact pin 12 Conductive plate 12a Terminal press 12b Leaf spring

Claims (2)

[Claims] 1. A motor, a reduction mechanism for reducing the rotation of the motor and transmitting the rotation to an output shaft, and a control circuit for controlling switching of rotation / stop of the motor in accordance with the rotation position of the output shaft. And a connector for connecting the control circuit and an external circuit, wherein the motor is disposed between the control circuit and the connector. 2. The contact pin of the connector and the conductive pattern of the control circuit are formed by an integral metal plate including a conductive plate connecting between the two, and the motor is formed by a part of the conductive plate. The motor actuator according to claim 1, wherein the motor actuator is elastically supported.