CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Japanese Patent Application No. 2016-172047, filed Sep. 2, 2016, which is hereby incorporated by reference in its entirety.

BACKGROUND

Technical Field

The present disclosure relates to a motor, a rotary apparatus including the motor, and a vehicle including an air conditioning system including the rotary apparatus.

Background

For example, Japanese Patent Application Laid-Open No. 2015-220969 discloses a motor actuator (rotary apparatus) configured to drive a plurality of doors (louvers) provided in an air passage for flowing air of a vehicle air conditioning system.

The rotary apparatus outputs rotation of a rotary shaft of a motor via a plurality of gears to control pivoting of the louvers.

On the other hand, Japanese Patent Application Laid-Open No. 2008-22619 discloses a brushed motor having a brush provided with a damper member in order to reduce mechanical noise of the motor.

Recent years have seen a tendency toward increased quietness in an intra-vehicle environment. For example, a motor-driven vehicle such as an electric car emits no noise from the internal-combustion engine and thus the inside of the vehicle is remarkably quiet.

Such a high degree of quietness emphasizes noise which otherwise would not be noticeable inside a car equipped with an internal combustion engine, and thus a higher degree of low noise than ever before is considered to be required even in various parts of the car.

One source of noise of a rotary apparatus is the motor, and further improvement in quietness can be achieved by using a motor with noise reduced as compared to the motor of the related art.

SUMMARY

The present disclosure is related to providing a motor with reduced noise, a rotary apparatus including the motor, and a vehicle including an air conditioning system including the rotary apparatus.

(1) According to a first aspect of the present disclosure, a motor includes an armature including a commutator; a bracket including a conductive brush and a first wall part, the conductive brush being in contact with the commutator, the first wall part including a first surface extending along a first surface of the conductive brush; and a first deformable part in contact with both the first surface of the conductive brush and the first surface of the first wall part, and the first deformable part being deformable in response to movement of the conductive brush.

(2) In the configuration of (1) described above, the first deformable part is always contact with both the first surface of the conductive brush and the first surface of the first wall part.

(3) In the configuration of (1) or (2) described above, the first surface of the first wall part is a surface parallel to the first surface of the conductive brush.

(4) In the configuration of any one of (1) to (3) described above, the first deformable part includes a rubber member fixed to the first surface of the conductive brush.

(5) In the configuration of any one of (1) to (4) described above, the first deformable part includes one of a gel and a grease.

(6) In the configuration of any one of (1) to (3) described above, the first deformable part is one of a gel or a grease.

(7) In the configuration of any one of (1) to (6) described above, the motor includes: a second wall part provided at the bracket, and a second deformable part, wherein the second wall part includes a second surface extending along a second surface of the conductive brush and is located on a side opposite the first surface of the conductive brush; and the second deformable part in contact with both the second surface of the conductive brush and the second surface of the second wall part is deformable in response to movement of the conductive brush.

(8) In the configuration of (7) described above, the second deformable part is always in contact with both the second surface of the conductive brush and the second surface of the second wall part.

(9) In the configuration of (7) or (8) described above, the second surface of the second wall part is a surface parallel to the second surface of the conductive brush.

(10) In the configuration of any one of (7) to (9) described above, the second deformable part includes a rubber member fixed to the second surface of the conductive brush.

(11) In the configuration of any one of (7) to (10) described above, the second deformable part includes one of a gel and a grease.

(12) In the configuration of any one of (7) to (11) described above, the motor includes: a pair of the conductive brushes in contact with the commutator; a pair of the first wall parts provided to correspond to the respective conductive brushes; a pair of the first deformable parts provided to correspond to the respective conductive brushes; a pair of the second wall parts provided to correspond to the respective conductive brushes; and a pair of the second deformable parts provided to correspond to the respective conductive brushes.

(13) In the configuration of any one of (1) to (12) described above, the motor includes a terminal part and an accommodating part, wherein the bracket includes a hole part, the terminal part includes a terminal and a first end portion, the terminal is passed through the hole part to an outside, the first end portion is joined to the terminal and bent on one end side, an end portion of the conductive brush on a side opposite the commutator side is fixed to the first end portion of the terminal part, the accommodating part accommodates a part of the first end portion of the terminal part, and one of a gel and a grease in contact with both the accommodating part and the one end side of the first end portion of the terminal part is provided in a gap between the accommodating part and the first end portion of the terminal part.

(14) In the configuration of any one of (1) to (13) described above, the motor includes: a frame; and a magnet provided at the frame, wherein the frame includes a bottom part and a side wall part coupled to the bottom part, the bottom part includes a hole part for passing a rotary shaft of the armature through to an outside, and the side wall part covers an outer periphery of the armature and includes an opening part on a side opposite to the bottom part, the magnet is provided at an inner wall surface of the side wall part of the frame, the inner wall surface faces the armature, and the bracket is attached to the opening part of the frame.

(15) In the configuration of any one of (1) to (14) described above, the first surface of the conductive brush is a surface located on a side opposite to the surface in contact with the commutator.

(16) According to the present disclosure, a rotary apparatus includes: the motor including the configuration of any one of (1) to (15) described above; a plurality of gears including an output gear configured to output rotation of the motor to the outside; and a housing configured to house the plurality of gears and the motor.

(17) According to the present disclosure, a vehicle includes: an air conditioning system including the rotary apparatus according to configuration of (16) described above; and a louver controlled by the rotary apparatus.

According to the present disclosure, a motor with reduced noise, a rotary apparatus including the motor, and a vehicle including an air conditioning system including the rotary apparatus are provided.

