JP2019047727A - Motor, rotation device comprising motor, and vehicle that comprises air conditioning system comprising rotation device - Google Patents

Abstract

To provide a motor with reduced noise, and to provide a rotation device comprising the motor, and to provide a vehicle that comprises an air conditioning system comprising the rotation device.SOLUTION: A motor 10 comprises: an amateur 30 having a commutator 33; a conductive brush 42 contacted with the commutator 33; a bracket 40 on which the conductive brush 42 is provided; a first wall part 62 provided on the bracket 40, and that has a first surface 62a extending to the commutator 33 side along a first surface 42b of the conductive brush 42; and a first deformation part 72 contacted with both the first surface 42b of the conductive brush 42 and the first surface 62a of the first wall part 62, and that deforms depending on movement of the conductive brush 42.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a motor, a rotating device including the motor, and a vehicle including an air conditioning system including the rotating device.

For example, Patent Document 1 discloses a motor actuator (rotating device) for driving a plurality of doors (louvers) provided in the middle of an air passage through which air of a vehicle air conditioning system flows.
In such a rotation device, rotation control of the louver is performed by outputting the rotation of the rotation shaft of the motor through a plurality of gears.

  On the other hand, Patent Document 2 discloses that a damper member is provided on a brush of a brushed motor in order to reduce mechanical noise of the motor.

JP, 2015-220969, A JP 2008-22619 A

  In recent years, although the environment inside the vehicle tends to be quieter, the noise generated by the internal combustion engine does not appear in vehicles driven by a motor such as an electric car, so the quietness in the vehicle is extremely high.

  When the noise level is high in this way, even if the sound does not bother you so much in a car equipped with an internal combustion engine, the sound becomes noticeable in the car, so even in various parts, It is thought that the quietness higher than before will be required.

  And although one of the generation sources of the noise of a rotation apparatus is a motor, the still noise improvement can be aimed at further by using the motor which reduced the noise of the motor more compared with the conventional motor.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a motor with reduced noise, a rotating device equipped with the motor, and a vehicle equipped with an air conditioning system equipped with the rotating device.

The present invention is grasped by the following composition in order to achieve the above-mentioned object.
(1) A motor according to the present invention is provided on an armature having a commutator, a conductive brush in contact with the commutator, a bracket provided with the conductive brush, and the bracket; A first wall portion having a first surface extending to the commutator side along a surface, and contacting both the first surface of the conductive brush and the first surface of the first wall portion; And a first deformation portion that deforms according to the movement of the conductive brush.

(2) In the configuration of the above (1), the first deformation portion is always in contact with both the first surface of the conductive brush and the first surface of the first wall portion.

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

(4) In the configuration of any one of (1) to (3), the first deformation portion includes a rubber member fixed to the first surface of the conductive brush.

(5) In the configuration of any one of the above (1) to (4), the first deformation portion includes gel or grease.

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

(7) In the configuration according to any one of (1) to (6), along the second surface provided on the bracket and opposite to the first surface of the conductive brush, on the side of the commutator In contact with the second wall forming the extending second surface and both the second surface of the conductive brush and the second surface of the second wall according to the movement of the conductive brush And a second deformation portion to be deformed.

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

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

(10) In the configuration of any one of (7) to (9), the second deformation portion includes a rubber member fixed to the second surface of the conductive brush.

(11) In the configuration of any one of the above (7) to (10), the second deformation portion contains gel or grease.

(12) In the configuration according to any one of (7) to (11), a pair of the conductive brushes in contact with the commutator and two of the second brushes provided corresponding to the respective conductive brushes. 1 wall portion, two first deformation portions provided corresponding to the respective conductive brushes, and two second wall portions provided corresponding to the respective conductive brushes, respectively And two second deformation parts provided corresponding to the conductive brush.

(13) In the configuration of any one of the above (1) to (12), the bracket has a hole, and the terminal led to the outside through the hole and the terminal are connected to the terminal and the one end side is bent An end portion of the conductive brush opposite to the commutator side is fixed to the first end portion of the terminal portion, and the bracket is provided with the terminal portion having the one end portion. A storage portion for storing a part of the first end portion of the storage portion, and the first end of the storage portion and the terminal portion in a gap between the storage portion and the first end portion of the terminal portion A gel or grease is provided in contact with both ends of the part.

(14) In any one of the configurations (1) to (13), the frame portion and the magnet provided in the frame portion are provided, and the frame portion derives the rotation axis of the armature to the outside. And a side wall portion connected to the bottom portion and having an opening on the side opposite to the bottom portion, the side wall portion covering the outer periphery of the armature, the magnet being the side wall portion of the frame portion And the bracket is attached to the opening of the frame portion.

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

(16) A rotating device according to the present invention comprises: a motor having any one of the configurations (1) to (15); a plurality of gears including an output gear for outputting the rotation of the motor to the outside; And a housing for housing the gear and the motor.

(17) A vehicle according to the present invention includes an air conditioning system including a rotating device having the above configuration (16) and a louver controlled by the rotating device.

  According to the present invention, it is possible to provide a motor equipped with a motor with reduced noise, a rotary device equipped with the motor, and an air conditioning system equipped with the rotary device.

It is a perspective view of a motor of a 1st embodiment concerning the present invention. It is an exploded perspective view of a motor of a 1st embodiment concerning the present invention. It is a perspective view of the amateur of a 1st embodiment concerning the present invention. It is an exploded perspective view of a bracket of a 1st embodiment concerning the present invention. It is a perspective view of a bracket of a 1st embodiment concerning the present invention. It is a figure explaining the state of the 2nd deformation part when the motor of a 1st embodiment concerning the present invention drives, (a) is the top view which looked at the bracket from the frame part side, (b) These are the enlarged views of dotted line area A1 of (a). It is a figure explaining the state of the 2nd deformation part when the motor of a 1st embodiment concerning the present invention drives, (a) is the top view which looked at the bracket from the frame part side, (b) These are the enlarged views of dotted line area A2 of (a). It is a perspective view of the bracket of 2nd Embodiment concerning this invention. It is a perspective view showing a rotation device of an embodiment concerning the present invention. It is the perspective view which removed the 1st housing of rotation device of the embodiment concerning the present invention. It is the perspective view which looked at the 2nd surface part side of the 2nd housing | casing of the rotation apparatus of embodiment which concerns on this invention. It is a schematic diagram for explaining an air-conditioning system provided with a rotation device of an embodiment concerning the present invention. It is a figure which shows the vehicle provided with the air-conditioning system of FIG.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described in detail based on the attached drawings.
In addition, the same number is attached | subjected to the same element through the whole description of embodiment.

First Embodiment
FIG. 1 is a perspective view of a motor 10 according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the motor 10 according to the first embodiment of the present invention.

  As shown in FIG. 2, the motor 10 includes a frame portion 20, a plurality of magnets (not shown) provided in the frame portion 20, an armature 30, and a bracket 40.

(Frame part)
As shown in FIG. 2, the frame portion 20 is connected to the bottom 21 provided with the hole 21 a for guiding the rotation shaft 31 of the armature 30 to the outside, and the bottom 21, and has an opening 22 a on the opposite side to the bottom 21. And a side wall 22 covering the outer periphery of the armature 30.

The bracket 40 is attached to the opening 22 a of the frame 20 so as to close the opening 22 a of the frame 20.
Moreover, in this embodiment, although the side wall part 22 of the flame | frame part 20 is a square-pole-shaped external shape where the corner | angular part curved, an external shape may be changed as needed.

A plurality of magnets are disposed apart from the armature 30 on the inner wall surface of the side wall 22 of the frame 20 facing the armature 30.
Further, at the bottom portion 21 of the frame portion 20, a bearing portion 21b formed so as to project outward in the direction of the rotation shaft 31 is provided.

At the center of the bearing 21b, a hole 21a for leading the rotary shaft 31 is provided.
And the bearing which supports the rotating shaft 31 rotatably is accommodated in the inside of the bearing part 21b.

(amateur)
As shown in FIG. 2, the armature 30 includes a core 32, a coil (not shown) wound around the core 32, and a rotation shaft 31 fixed to the core 32.
The rotation shaft 31 is disposed at the center of the core 32 so as to penetrate the core 32.
The core 32 has a configuration in which a plurality of metal plates are integrally laminated in the direction of the rotation shaft 31.
Examples of the plurality of metal plates include electromagnetic steel plates and the like.

FIG. 3 is a perspective view of the amateur 30. As shown in FIG.
As shown in FIG. 3, the armature 30 is provided with a commutator 33 provided in the circumferential direction along the outer peripheral surface of the rotating shaft 31.
The commutator 33 has a plurality of sheet metals 33 a provided on the other end side opposite to the one end of the rotary shaft 31 led to the outside of the motor 10.

The end of a coil (not shown) wound around each pole 32 a of the core 32 is connected to the metal plate 33 a of the commutator 33 by solder or the like.
The other end 31a of the rotary shaft 31 located on the other side of the position of the commutator 33 is rotatably supported by a bearing 41 provided on a bracket 40 described later.

(bracket)
FIG. 4 is an exploded perspective view of the bracket 40.
As shown in FIG. 4, the bracket 40 includes a bracket body 40 a and a bearing plate 40 b.
The bracket body 40a includes a bottom portion 40ab, which is located on the side opposite to the frame portion 20 side.
The bearing plate 40b is attached to the outside of the bottom 40ab.

A bearing portion 40ba is provided at the center of the bearing plate 40b, and the bearing portion 40ba protrudes on the opposite side to the bracket main body 40a.
The bearing 41 is accommodated in the bearing portion 40ba, and the bearing plate 40b is attached to and integrated with the bracket main body 40a, whereby the bracket 40 including the bearing 41 is formed.

  Further, the bracket 40 includes a pair of conductive brushes (conductive brushes 42 and 43) and a pair of terminal portions (terminals 44 and 45) to which the conductive brushes are attached.

The terminal portion 44 and the terminal portion 45 have a symmetrical shape in which the bending directions on one end 44ba of the first end 44b and one end 45ba of the first end 45b are opposite to each other. The basic configuration is the same except for differences.
Specifically, the terminal portion 44 includes a terminal 44a led to the outside, and a first end 44b connected to the terminal 44a and bent at one end 44ba.
The terminal 44a is a portion electrically connected to the outside.

The terminal portion 45 also includes a terminal 45 a led to the outside, and a first end 45 b connected to the terminal 45 a and bent at one end 45 ba side.
The terminal 45a is a portion electrically connected to the outside.

FIG. 5 is a perspective view of the bracket 40. FIG.
As shown in FIG. 4, the bracket main body 40 a is provided with a groove 46 into which the terminal 44 a of the terminal 44 is inserted, and the bottom of the groove 46 is provided with a hole for leading out the terminal 44 a There is.
The bottom of the groove 46 faces the bearing plate 40 b.
The bearing plate 40 b is provided with an opening 48 corresponding to the terminal 44 a of the terminal 44.
The opening 48 is disposed at a position facing the terminal 44 a.

  Therefore, as shown in FIG. 5, when the terminal 44a of the terminal portion 44 to which the conductive brush 42 is fixed is inserted into the groove 46 of the bracket main body 40a, the terminal 44a is led out through the hole at the bottom of the groove 46 It can be done.

Similarly, as shown in FIG. 4, the bracket main body 40a is provided with a groove portion 47 into which the terminal 45a of the terminal portion 45 is inserted, and the bottom portion of the groove portion 47 is provided with a hole for leading out the terminal 45a. It is done.
The bearing plate 40 b is provided with an opening 49 corresponding to the terminal 45 a of the terminal 45.
The opening 49 is disposed at a position facing the terminal 45a.

  Therefore, as shown in FIG. 5, when the terminal 45a of the terminal 45 with the conductive brush 43 fixed is inserted into the groove 47 of the bracket main body 40a, the terminal 45a is exposed through the hole at the bottom of the groove 47 Can be derived.

In addition, the commutator 33 of the armature 30 is located in the position of the vicinity of the bearing 41 shown in FIG.
Therefore, as can be seen from FIGS. 4 and 5, the end of the conductive brush 42 opposite to the commutator 33 in the radial direction is fixed to one end of the first end 44 b of the terminal portion 44. It is done.
Specifically, the end of the conductive brush 42 is fixed to one end 44ba of the first end 44b, and the one end 44ba is a part of one end of the first end 44b.
Similarly, in the conductive brush 43, the end of the conductive brush 43 opposite to the side of the commutator 33 is fixed to one end 45ba of the first end 45b of the terminal 45, and this one end 45ba Is a part of one end side of the first end 45 b.

While describing the operation of the motor 10 having such a configuration, a more detailed configuration will be described.
When power is supplied through the terminal 44 and the terminal 45, current is supplied to the coil through the conductive brush 42 and the sheet metal 33a of the commutator 33 in contact with the conductive brush 43.

  Then, the pole 32a (see FIG. 3) is excited to the N pole or the S pole according to the winding direction of the coil, and an exchange occurs with the magnetic force of the magnet provided in the frame portion 20. Rotate.

  Then, the commutator 33 also rotates with the rotation of the armature 30, and the conductive brush 42 and the conductive brush 43 come into contact with the sheet metal 33a different from the sheet metal 33a of the commutator 33 which has been in contact earlier.

  As a result, the current is supplied to the conductive brush 42 and the coil connected to the sheet metal 33a of the commutator 33 newly brought into contact with the conductive brush 43, and the pole 32a corresponding to the coil supplied with the current is a coil. Depending on the winding direction of the magnet, the magnet is excited to the N pole or the S pole.

Then, an inquiry is generated again between the magnetic force of the magnet provided in the frame portion 20, and the armature 30 rotates.
By repeating this, the rotating shaft 31 of the motor 10 continues to rotate.

  Here, when the conductive brush 42 and the conductive brush 43 contact the sheet metal 33a of the commutator 33 which has been in contact with another sheet metal 33a, the conductive brush 42 and the conductive brush 43 vibrate. Cause noise.

  Therefore, in the present embodiment, the first deformation portion 72 and the second deformation portion 70 are provided in order to suppress the vibration of the conductive brush 42, and the first deformation portion 73 and the first deformation portion in order to suppress the vibration of the conductive brush 43. The 2 deformation parts 71 are provided, and the configuration related to these deformation parts will be described in detail below.

(Second deformation unit 70)
As shown in FIGS. 4 and 5, the bracket 40 includes a second wall 60.
The second wall 60 is provided on the bracket body 40 a.
In addition, the second wall 60 is a second surface 60 a that extends to the commutator 33 side (the center side of the bracket 40) along the second surface 42 a that is a surface of the conductive brush 42 in contact with the commutator 33. Have.
In the present embodiment, the second surface 60 a of the second wall portion 60 is formed to be a surface parallel to the second surface 42 a of the conductive brush 42.
The second surface 60 a of the second wall portion 60 is not limited to a surface parallel to the second surface 42 a of the conductive brush 42, and may be inclined with respect to the second surface 42 a of the conductive brush 42. Absent.

  Then, as shown in FIG. 5, the motor 10 has both of these surfaces (a second surface 42 a and a second surface) between the second surface 42 a of the conductive brush 42 and the second surface 60 a of the second wall 60. 60a) is provided with a second deformation portion 70 provided so as to be always in contact (always in close contact).

Here, the constant contact (always in close contact) does not mean that the contact (in close contact) state is maintained until the motor 10 can not be used.
That is, while the motor 10 is used for a long time, peeling may occur between the second deformation portion 70 and the second surface 42a, or peeling may occur between the second deformation portion 70 and the second surface 60a. It is possible to occur.
Therefore, "always in contact (always in close contact)" should be understood as meaning always in contact (closely in contact) while a unique situation such as peeling does not occur, and contact (closely in contact) It should be noted that it should not be understood in the sense of continuing.

Specifically, the second deformation portion 70 includes a flat rubber member 70a fixed to the second surface 42a of the conductive brush 42, and a buffer member 70b which is gel or grease.
The second deformation portion 70 does not have to be limited to one including the rubber member 70 a and the buffer member 70 b, and for example, the second deformation portion 70 may be configured only by the buffer member 70 b.

For example, the rubber member 70a preferably has a rubber hardness (Shore A hardness) of 25 or more and 60 or less according to JIS K6253 from the viewpoint of suppressing vibration.
The gel used for the buffer member 70b may be a two-component curing type, an ultraviolet curing type, a thermosetting type, etc. From the viewpoint of suppressing vibration, the gel hardness is type 00 according to ASTM D 2240. The hardness is preferably 30 or more and 70 or less.
Furthermore, as for the grease used for the buffer member 70b, in view of suppressing vibration, the consistency is preferably 5 or more and 60 or more and 165 or less.

  By using the gel of hardness and the grease of consistency as described above, it is possible to obtain the buffer member 70b having the softness that can suppress the vibration well while suppressing the flowability of the buffer member 70b. Here, softness includes, for example, having viscosity or having elasticity.

  When such a second deformation portion 70 is provided between the second surface 42 a of the conductive brush 42 and the second surface 60 a of the second wall 60 so as to always contact both surfaces, the conductive brush The second deformation portion 70 softly deforms or changes the movement of the conductive brush 42 in a direction away from the commutator 33 so that the second deformation portion 70 absorbs the movement, and largely restrains the vibration of the conductive brush 42 thereby. It is possible to reduce and suppress the generation of noise.

The state of the second deformation portion 70 when the motor 10 is driven will be described in more detail with reference to FIG.
FIG. 6 is a view for explaining the state of the second deformation portion 70 when the motor 10 is driven, and FIG. 6 (a) is a plan view of the bracket 40 as seen from the frame portion 20 side. b) is an enlarged view of dotted-line area A1 of FIG. 6 (a).
In addition, in FIG. 6, the sheet metal 33a of the commutator 33 provided in the amateur 30 is also shown in figure.

When the motor 10 is driven and the conductive brush 42 vibrates, for example, as shown in FIG. 6B, the second surface 42a of the conductive brush 42 is a dotted line from a position indicated by a solid line as indicated by an arrow m1. It is likely to be displaced to the position shown by.
At this time, the second deformation portion 70 is deformed according to the movement of the conductive brush 42.

Specifically, as shown in FIG. 6B, the rubber member 70a moves as indicated by the arrow m2, and the shape of the buffer member 70b is hatched so as to match the movement of the rubber member 70a. It changes from the state of to the state of cross hatching. Specifically, the shape of the buffer member 70 b is a direction in which the second surface 60 a of the second wall 60 extends or a direction in which the second surface 42 a of the conductive brush 42 extends. Transform towards.
That is, a part of buffer member 70b escapes (projects) into the space formed between the second surface 42a of conductive brush 42 without buffer member 70b and the second surface 60a of second wall 60. .
When the rubber member 70a also has a low rubber hardness, the shape of the rubber member 70a is likely to be deformed as in the case of the buffer member 70b.

The change in shape of the buffer member 70b is caused by the second deformation portion 70 being in contact with and sandwiched between the second surface 42a of the conductive brush 42 and the second surface 60a of the second wall portion 60. It is a phenomenon that happens.
That is, even if the second deformation portion 70 is in contact with the second surface 42 a of the conductive brush 42, if the second surface 60 a side of the second wall portion 60 is free, the second deformation portion 70 is not Since no compressive force is applied, the change in shape of the second deformation portion 70 is extremely small.

Then, as the second deformation portion 70 is compressed and the shape changes, a reaction force for stopping the movement of the conductive brush 42 acts on the conductive brush 42.
For this reason, the movement of the conductive brush 42 is suppressed.
In addition, depending on the material forming the second deformation portion 70, not only elasticity but also viscosity, the second deformation portion 70 is compressed to move the conductive brush 42 as the shape changes. At the same time, an action to absorb the force is generated.

On the other hand, when the conductive brush 42 moves in the reverse direction, that is, the second surface 42a of the conductive brush 42 moves in the opposite direction to the arrow m1 from the position of the dotted line shown in FIG. When it is intended to move, the shape of the second deformation portion 70 changes.
Specifically, the shape of the buffer member 70 b is a direction in which the second surface 60 a of the second wall portion 60 extends or a direction in which the second surface 42 a of the conductive brush 42 extends, Transform towards the root F1 of
That is, a part of the buffer member 70b returns to the space formed between the second surface 42a of the conductive brush 42 on which the buffer member 70b is located and the second surface 60a of the second wall 60.

  Here, since the second deformation portion 70 is not an elastic body such as a spring, it does not immediately return to its original shape by its own elastic force, and when the conductive brush 42 tries to move to the position shown by a solid line. The change in the shape of the second deformation portion 70 is mainly caused by the force (restoring force) generated by the bending of the conductive brush 42.

Then, the second deformation portion 70 is pulled in a direction from the second wall portion 60 toward the conductive brush 44 by the movement of the conductive brush 42 in the direction opposite to the arrow m 1.
As the shape of the second deformation portion 70 changes due to this tension, the second surface 60 a of the second wall portion 60 of the conductive brush 42 by the second deformation portion 70 with respect to the conductive brush 42. A reaction force will work to keep the movement away from the side.
Further, along with the change of the shape of the second deformation portion 70, an action of absorbing (reducing) the moving force of the conductive brush 42 is simultaneously generated.

  Note that this reaction force, that is, the retaining action is also a phenomenon that occurs when the second deformation portion 70 is in contact with both surfaces of the second surface 42 a of the conductive brush 42 and the second surface 60 a of the second wall 60. If the second deformation portion 70 is not in contact with the second surface 60 a of the second wall portion 60, the second deformation portion 70 moves in the same manner as the conductive brush 42.

  As described above, also when the conductive brush 42 moves from the position of the solid line shown in FIG. 6B to the position of the dotted line shown in FIG. When trying to move, it acts to suppress the movement of the conductive brush.

  The fact that the conductive brush 42 vibrates means that the conductive brush 42 repeatedly moves between the position of the solid line and the position of the dotted line shown in FIG. 6 (b). As described above, when the conductive brush 42 is directed to any position, the movement of the conductive brush 42 is suppressed so that the vibration of the conductive brush 42 is suppressed.

By the way, assuming that the volume before the shape change is T, the volume of the portion where the shape changes due to compression or tension is ΔT, and the shape change rate VC is ΔT / T, the degree to which the vibration accompanying the change in shape can be suppressed is The higher the shape change rate VC, the higher.
From this, in order to increase the shape change rate VC, it is preferable to reduce the volume of the second deformation portion 70 set in the state before driving the motor 10.

  Then, as can be seen from FIG. 6 (b), the second deformation portion 70 is provided in contact with both the second surface 42 a of the conductive brush 42 and the second surface 60 a of the second wall portion 60. Therefore, the volume of the second deformation portion 70 is adjusted by the distance between the second surface 42 a of the conductive brush 42 and the second surface 60 a of the second wall 60.

  Specifically, since the length and the like of the conductive brush to be used change depending on the size of the motor, the second surface 42 a and the second surface 42 a of the conductive brush 42 for making the second deformation portion 70 an appropriate volume. The setting of the distance between the second surfaces 60 a of the wall 60 is preferably performed based on the length of the conductive brush 42.

Therefore, the commutator 33 of the conductive brush 42 contacts the root of the conductive brush 42 on the terminal 44 side (refer to the position F1 where the support of the terminal 44 of the conductive brush 42 disappears in FIG. 6B). When the length to the position F11 (see FIG. 6A) is 1, the second surface 42a of the conductive brush 42 and the second surface 60a of the second wall 60 are set to 0.5 or less. It is preferable that a distance between them (hereinafter, also referred to as a first distance) is set, and more preferably 0.3 or less.
Then, the second wall 60 is provided on the bracket body 40 a so that the first distance between the second surface 42 a of the conductive brush 42 and the second surface 60 a of the second wall 60 is a predetermined distance. do it.

  Note that this first distance corresponds to each point along the second surface 60 a of the second wall portion 60 with respect to the conductive brush 42 which extends substantially straight without bringing the conductive brush 42 into contact with the commutator 33. The distance between the second surface 42a of the conductive brush 42 and the second surface 60a of the second wall 60 when the perpendicular is drawn is determined, which is the longest distance among the determined distances.

  On the other hand, if the first distance is too short, the second deformation portion 70 may not be able to be deformed sufficiently, so the first distance is preferably set to 0.1 or more, and is set to 0.2 or more It is more preferable that

  Furthermore, it is preferable that the second deformation portion 70 be provided with a certain length along the second surface 42 a of the conductive brush 42, so that the second surface 60 a of the second wall 60 is a conductive brush. It is preferable that a certain length be provided along the second surface 42 a of 42.

Specifically, a position F11 (see FIG. 6A) in which the commutator 33 of the conductive brush 42 contacts the root of the conductive brush 42 on the terminal portion 44 side (see the position F1 in FIG. 6B). The second wall portion 60 with respect to a point on the conductive brush 42 which becomes 0.4 or more from the root of the conductive brush 42 on the terminal portion 44 side to the commutator 33 side when the length up to 1 is taken as 1. Preferably, the second surface 60a extends to the side of the commutator 33 to such an extent that a perpendicular can be drawn from the point of the second surface 60a.
Also at this time, the conductive brush 42 is not in contact with the commutator 33, and a perpendicular line is drawn to the conductive brush 42 extending substantially straight.

That is, when a perpendicular is drawn from the position G2 (see FIG. 6B) closest to the commutator 33 side of the second surface 60a of the second wall 60 to the conductive brush 42, the perpendicular and the conductive brush 42 Of the second wall portion 60 so that the intersection point at which the second wall portion 60 crosses is at a length of 0.4 or more from the root of the conductive brush 42 on the terminal portion 44 side (see position F1 in FIG. 6B)). It is preferable that two faces 60a be provided.
In this way, the second surface 60a corresponding to the range of 0.4 or more is provided from the root of the conductive brush 42 on the terminal portion 44 side toward the commutator 33 side. The second deformation portion 70 can be provided over a range of four or more.

(Second deformation unit 71)
The bracket 40 is provided on the bracket main body 40 a, and extends along the second surface 43 a, which is a surface of the conductive brush 43 in contact with the commutator 33, to the commutator 33 side (the center side of the bracket 40) A second wall 61 having a surface 61a is provided.
The second surface 61 a of the second wall portion 61 is formed to be parallel to the second surface 43 a of the conductive brush 43.
The second surface 61 a of the second wall portion 61 is not limited to a surface parallel to the second surface 43 a of the conductive brush 43, and may be inclined with respect to the second surface 43 a of the conductive brush 43. Absent.

  Then, the motor 10 always contacts both surfaces (second surface 43 a and second surface 61 a) between the second surface 43 a of the conductive brush 43 and the second surface 61 a of the second wall portion 61 (always And a second deformation portion 71 provided to be in close contact with each other.

  In addition, the constant contact (always in close contact) mentioned here does not mean that the contact (in close contact) state is maintained until the motor 10 can not be used as described in the second deformation portion 70, and the motor 10 Is a unique situation where peeling may occur between the second deformation portion 71 and the second surface 43a or peeling may occur between the second deformation portion 71 and the second surface 61a while It should be noted that as long as 密 着 does not occur, it means always in contact (close contact) and should not be understood as meaning to keep in contact (close contact) forever.

Specifically, the second deformation portion 71 includes a flat rubber member 71 a fixed to the second surface 43 a of the conductive brush 43 and a buffer member 71 b which is gel or grease.
The second deformation portion 71 need not be limited to one including the rubber member 71a and the buffer member 71b. For example, the second deformation portion 71 may be configured only by the buffer member 71b.

For example, the rubber member 71a preferably has a rubber hardness (Shore A hardness) of 25 or more and 60 or less according to JIS K6253 in the same manner as described above, from the viewpoint of suppressing vibration.
The gel used for the buffer member 71b may be a two-component curing type, an ultraviolet curing type, a thermosetting type, etc. From the viewpoint of suppressing vibration, the gel hardness is type 00 according to ASTM D 2240. The hardness is preferably 30 or more and 70 or less.
Furthermore, the grease used for the buffer member 71 b preferably has a consistency of 5 or more and 60 or more and 165 or less from the viewpoint of suppressing vibration.

  By using the gel of hardness and the grease of consistency as described above, it is possible to obtain a buffer member 71 b having a softness that can suppress vibration well while suppressing the flowability of the buffer member 71 b.

  When such a second deformation portion 71 is provided between the second surface 43 a of the conductive brush 43 and the second surface 61 a of the second wall portion 61 so as to always contact both surfaces, the conductive brush The second deformation portion 71 softens or deforms the movement of the conductive brush 43 so as to absorb the movement of the conductive brush 43 so that the movement of the conductive brush 43 due to the movement of the conductive brush 43 is largely suppressed. It is possible to reduce and suppress the generation of noise.

  The second deformation portion 71 is a portion that exerts an effect similar to that of the second deformation portion 70 on the conductive brush 42 with respect to the conductive brush 43, and therefore, the second deformation portion when the motor 10 is driven. The state of 71 is the same as that described for the second deformation unit 70.

Therefore, although the detailed description is omitted, the root of the conductive brush 43 on the terminal 45 side (the position where the support of the terminal 45 of the conductive brush 43 in FIG. Of the conductive brush 43 so that the length from the F 2)) to the position F 21 (see FIG. 6A) contacting the commutator 33 of the conductive brush 43 is 0.5 or less. It is preferable that a distance between the second surface 43a and the second surface 61a of the second wall 61 (hereinafter, also referred to as a first distance) be set, and it is more preferable that the distance be set to 0.3 or less .
Then, the second wall portion 61 is provided on the bracket main body 40 a so that the first distance between the second surface 43 a of the conductive brush 43 and the second surface 61 a of the second wall portion 61 becomes a predetermined distance. do it.

  In the same manner as the first distance described in the second deformation portion 70, the first distance does not contact the conductive brush 43 with the commutator 33, and the first distance is substantially the same as the first distance. The distance between the second surface 43a of the conductive brush 43 and the second surface 61a of the second wall 61 when the perpendicular is drawn from each point along the second surface 61a of the second wall 61 is determined This is the longest distance among the two.

  Also, as described for the first distance of the second deformation portion 70, if the first distance corresponding to the second deformation portion 71 is also short, the second deformation portion 71 may not be able to be sufficiently deformed. Therefore, the first distance corresponding to the second deformation portion 71 is also preferably set to 0.1 or more, and more preferably set to 0.2 or more.

Furthermore, in order to allow the second deformation portion 71 to be provided with a certain length along the second surface 43 a of the conductive brush 43, the terminal portion 45 is similar to that described for the second deformation portion 70. The length from the root of the conductive brush 43 on the side (see position F2 in FIG. 6A) to the position F21 (see FIG. 6A) in contact with the commutator 33 of the conductive brush 43 is 1 When the point on the second surface 61 a of the second wall portion 61 with respect to the point on the conductive brush 43 which becomes 0.4 or more from the root of the conductive brush 43 on the terminal portion 45 side to the commutator 33 side It is preferable that the second surface 61 a extends to the side of the commutator 33 to such an extent that a perpendicular can be drawn.
Also at this time, the conductive brush 43 is not in contact with the commutator 33, and a perpendicular line is drawn to the conductive brush 43 extending substantially straight.

  By doing this, in the second deformation portion 71 as well as the second deformation portion 70, the range of 0.4 or more from the root of the conductive brush 43 on the terminal portion 45 side toward the commutator 33 side The second deformation portion 71 can be provided over the range of 0.4 or more.

(First deformation unit 72)
As shown in FIG. 5, the bracket 40 is provided on the bracket main body 40 a, and along the first surface 42 b opposite to the second surface 42 a of the conductive brush 42, the commutator 33 side (center of the bracket 40 A first wall 62 forming a first surface 62a extending to the side).
The first surface 62 a of the first wall portion 62 is formed to be parallel to the first surface 42 b of the conductive brush 42.

  Then, as shown in FIG. 5, the motor 10 is provided so as to always contact (always contact) both surfaces between the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62. And a first deformation portion 72 formed of gel or grease.

  In addition, the constant contact (always in close contact) mentioned here does not mean that the contact (in close contact) state is maintained until the motor 10 can not be used as described in the second deformation portion 70, and the motor 10 Is a unique situation in which peeling may occur between the first deformation portion 72 and the first surface 42b or peeling may occur between the first deformation portion 72 and the first surface 62a while the It should be noted that as long as 密 着 does not occur, it means always in contact (close contact) and should not be understood as meaning to keep in contact (close contact) forever.

For example, the gel forming the first deformation portion 72 may be a two-component curing type, an ultraviolet curing type, a thermosetting type, etc. In view of suppressing vibration, the hardness of the gel conforms to ASTM D 2240. The hardness of type 00 is preferably 30 or more and 70 or less.
Moreover, as for the grease which forms the 1st deformation | transformation part 72, 60 or more and 165 or less are preferable in a 5th grade from a viewpoint of suppressing a vibration.

  Similarly to the second deformation portion 70, the first deformation portion 72 may be configured to include a rubber member having a rubber hardness (Shore A hardness) of 25 or more and 60 or less according to JIS K6253.

  And, by using the gel of the hardness and the grease of the consistency as described above, while suppressing the flowability of the first deformation portion 72, the first deformation portion 72 having the softness that can suppress the vibration well can do.

  When such a first deformation portion 72 is provided between the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62 so as to always contact both surfaces, the conductive brush The first deformation portion 72 can be softly deformed or transformed so as to absorb the force of the motor 42 moving away from the commutator 33, thereby significantly reducing the generation of noise.

The state of the first deformation portion 72 when the motor 10 is driven will be described in more detail with reference to FIG. 7.
FIG. 7 is a view for explaining the state of the first deformation portion 72 when the motor 10 is driven, and FIG. 7 (a) is a plan view of the bracket 40 seen from the frame portion 20 side. b) is an enlarged view of dotted-line area A2 of FIG. 7 (a).
In addition, in FIG. 7, the sheet metal 33a of the commutator 33 provided in the amateur 30 is also shown in figure.

When the motor 10 is driven and the conductive brush 42 vibrates, for example, as shown in FIG. 7B, the first surface 42b of the conductive brush 42 is a dotted line from a position shown by a solid line as shown by arrow m3. It is likely to be displaced to the position shown by.
At this time, the first deformation portion 72 is deformed according to the movement of the conductive brush 42.

Specifically, as shown in FIG. 7B, the shape of the first deformation portion 72 crosses from the hatched state shown by oblique lines so that the conductive brush 42 moves as shown by the arrow m3. It changes to the state of hatching.
Specifically, the shape of the first deformation portion 72 is a direction in which the second surface 62 a of the first wall portion 62 extends or a direction in which the first surface 42 b of the conductive brush 42 extends, Transform towards 33.
That is, a part of the first deformation portion 72 escapes to the space formed between the first surface 42 b of the conductive brush 42 without the first deformation portion 72 and the first surface 62 a of the first wall portion 62. (Protruding).

The shape change of the first deformation portion 72 is a state in which the first deformation portion 72 is in contact and sandwiched between the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62. It is a phenomenon that occurs.
That is, even if the first deformation portion 72 is in contact with the first surface 42 b of the conductive brush 42, if the first surface 62 a side of the first wall portion 62 is free, the first deformation portion 72 is Since no compressive force is applied, the change in shape of the first deformation portion 72 is extremely small.

Then, as the first deformation portion 72 is compressed and the shape changes, a reaction force for stopping the movement of the conductive brush 42 acts on the conductive brush 42. For this reason, the movement of the conductive brush 42 is suppressed.
Since the material forming the first deformation portion 72 has elasticity as well as viscosity, the conductive brush 42 tries to move as the first deformation portion 72 is compressed and the shape changes. The action of absorbing the force also occurs at the same time.

On the other hand, when the conductive brush 42 moves in the reverse direction, that is, the first surface 42b of the conductive brush 42 moves in the opposite direction to the arrow m3 from the position of the dotted line shown in FIG. In the case of movement, the shape of the first deformation portion 72 changes.
Specifically, the shape of the first deformation portion 72 is a direction in which the first surface 62 a of the first wall portion 62 extends or a direction in which the first surface 42 b of the conductive brush 42 extends, It is deformed toward the root F1 of the brush 44.
That is, a portion of the first deformation portion 72 returns to the space formed between the first surface 42 b of the conductive brush 42 with the first deformation portion 72 and the first surface 62 a of the first wall portion 62. .

  Here, since the first deformation portion 72 is not an elastic body such as a spring, it does not immediately return to its original shape by its own elastic force, and when the conductive brush 42 tries to move to the position shown by a solid line. The change in the shape of the first deformation portion 72 is mainly caused by the force (restoring force) generated by the bending of the conductive brush 42.

Then, the first deformation portion 72 is pulled by the movement of the conductive brush 42 in the direction opposite to the arrow m1, and as the shape changes, the first conductive brush 42 is not A reaction force acts to hold back the movement of the wall 62 in the direction away from the first surface 62 a side.
Further, along with the change of the shape, an action of absorbing the moving force of the conductive brush 42 is also generated at the same time.

  Note that this repelling action is also a phenomenon that occurs when the first deformation portion 72 is in contact with both surfaces of the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62. If 72 is not in contact with the first surface 62 a of the first wall 62, the first deformation portion 72 moves in the same manner with the conductive brush 42.

  Thus, even when the conductive brush 42 moves from the position of the solid line shown in FIG. 7B to the position of the dotted line, the first deformation portion 72 conversely moves the position of the solid line from the position of the dotted line. When trying to move, it acts to suppress the movement of the conductive brush.

  The fact that the conductive brush 42 vibrates means that the conductive brush 42 repeatedly moves between the position of the solid line and the position of the dotted line shown in FIG. As described above, when the conductive brush 42 is directed to any position, the movement of the conductive brush 42 is suppressed so that the vibration of the conductive brush 42 is suppressed.

  By the way, as shown in FIG. 7B, when the first surface 42b of the conductive brush 42 moves from the position shown by the solid line to the position shown by the dotted line as shown by the arrow m3, the second surface 42b of the conductive brush 42 The face 42a will move in the same manner.

Then, the rubber member 71a of the second deformation portion 70 also moves as shown by the arrow m4, and the shape of the buffer member 70b of the second deformation portion 70 changes (see the cross hatched portion H).
When the rubber member 71a also has a low rubber hardness, the shape changes in the same manner as the buffer member 70b.

  Then, when the shape of the second deformation portion 70 changes, as described above, the reaction force for stopping the movement of the second wall portion 60 of the conductive brush 42 in the direction away from the second surface 60 a side is At the same time, the second deformation portion 70 absorbs the moving force of the conductive brush 42.

  Conversely, if the first surface 42b of the conductive brush 42 moves from the position of the dotted line shown in FIG. 7B in the opposite direction to the arrow m3 and tries to move to the position shown by the solid line, the second deformation portion 70 Changes in shape.

  Then, as described above, even when the shape of the second deformation portion 70 changes, the reaction force for stopping the movement of the conductive brush 42 acts on the conductive brush 42, and the second deformation portion 70 becomes conductive. Absorbs the force of the sexing brush 42 to move.

Therefore, in the present embodiment, both the first deformation portion 72 and the second deformation portion 70 cooperate to suppress the movement of the conductive brush 42.
Therefore, the vibration of the conductive brush 42 can be further suppressed, and the noise can be significantly reduced.

  On the other hand, also in the first deformation portion 72, similarly to the second deformation portions 70 and 71, the volume of the first deformation portion 72 set in a state before driving the motor 10 in order to increase the shape change rate VC. It is preferable to reduce

  Then, as can be seen from FIG. 7 (b), the first deformation portion 72 also has the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62 as in the second deformation portion 70. The volume of the first deformation portion 72 is adjusted by the distance between the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62. .

  Further, also in the first deformation portion 72, the length and the like of the conductive brush to be used change depending on the size of the motor, as in the second deformation portion 70, so the first deformation portion 72 has an appropriate volume. Preferably, the setting of the distance between the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall portion 62 to be made is based on the length of the conductive brush 42.

Therefore, the commutator 33 of the conductive brush 42 contacts the root of the conductive brush 42 on the terminal 44 side (see the position F1 where the support of the terminal 44 of the conductive brush 42 disappears in FIG. 7B)). When the length to the position F11 (see FIG. 7A) is 1, the first surface 42b of the conductive brush 42 and the first surface 62a of the first wall 62 are set to 0.5 or less. It is preferable that a distance between them (hereinafter also referred to as a second distance) is set, and more preferably 0.3 or less.
Then, the first wall 62 is provided on the bracket body 40 a so that the second distance between the first surface 42 b of the conductive brush 42 and the first surface 62 a of the first wall 62 is a predetermined distance. do it.

  As in the case of the first distance, the second distance does not contact the conductive brush 42 with the commutator 33, and the second distance is the length of the first wall 62 with respect to the conductive brush 42 extending substantially straight. The distance between the first surface 42b of the conductive brush 42 and the first surface 62a of the first wall 62 when the perpendicular is drawn from each point along the first surface 62a is determined, and the most of the determined distances It is a long distance.

  On the other hand, since the first deformation portion 72 may not be able to be sufficiently deformed if the second distance is short, the second distance is preferably set to 0.1 or more, and is set to 0.2 or more. Is more preferable.

  Furthermore, in the first deformation portion 72 as well as the second deformation portion 70, it is preferable that the first deformation portion 72 be provided along the first surface 42b of the conductive brush 42 with a certain length. Therefore, it is preferable that the first surface 62 a of the first wall portion 62 be provided along the first surface 42 b of the conductive brush 42 by a certain length.

Specifically, a position F11 (see FIG. 7A) in contact with the commutator 33 of the conductive brush 42 from the root (see the position F1 of FIG. 7B) of the conductive brush 42 on the terminal portion 44 side. When the length up to 1 is set to the conductive brush 42 from the point closest to the base of the first surface 62a of the first wall portion 62 (refer to the position F1 in FIG. 7B). With reference to the position F12 (see FIG. 7B) at which the perpendicular is drawn, the point on the conductive brush 42 which is 0.4 or more from the position F12 to the commutator 33 side, It is preferable that the first surface 62 a extends to the side of the commutator 33 such that a perpendicular can be drawn from the point of the first surface 62 a.
Also at this time, the conductive brush 42 is not in contact with the commutator 33, and a perpendicular line is drawn to the conductive brush 42 extending substantially straight.

  By doing this, the first surface 62a corresponding to the range of 0.4 or more is provided from the position F12 near the root of the conductive brush 42 on the terminal portion 44 side toward the commutator 33 side. The first deformation portion 72 can be provided over the range of 0.4 or more.

(1st deformation part 73)
As shown in FIG. 5, the bracket 40 is provided on the bracket main body 40 a, and along the first surface 43 b opposite to the second surface 43 a of the conductive brush 43, the commutator 33 side (center of the bracket 40 A first wall 63 forming a first surface 63a extending to the side).
The first surface 63 a of the first wall portion 63 is formed to be substantially parallel to the first surface 43 b of the conductive brush 43.

  The motor 10 is provided between the first surface 43 b of the conductive brush 43 and the first surface 63 a of the first wall portion 63 with gel or grease so as to be always in contact (always in close contact) with both surfaces. A first deformation portion 73 to be formed is provided.

  In addition, the constant contact (always in close contact) mentioned here does not mean that the contact (in close contact) state is maintained until the motor 10 can not be used as described in the second deformation portion 70, and the motor 10 Is a unique situation where peeling may occur between the first deformation portion 73 and the first surface 43b or peeling may occur between the first deformation portion 73 and the first surface 63a while the It should be noted that as long as 密 着 does not occur, it means always in contact (close contact) and should not be understood as meaning to keep in contact (close contact) forever.

For example, the gel forming the first deformation portion 73 may be a two-component curing type, an ultraviolet curing type, a thermosetting type, etc. In view of suppressing vibration, the hardness of the gel conforms to ASTM D 2240. The hardness of type 00 is preferably 30 or more and 70 or less.
Moreover, as for the grease which forms the 1st deformation | transformation part 73, from a viewpoint of suppressing a vibration, 60 or more and 165 or less of consistency is preferable.

  Similarly to the second deformation portion 71, the first deformation portion 73 may be configured to include a rubber member having a rubber hardness (Shore A hardness) of 25 or more and 60 or less according to JIS K6253.

  Then, by using the gel of the hardness and the grease of the consistency as described above, while suppressing the flowability of the first deformation portion 73, the first deformation portion 73 having the softness that can suppress the vibration well and can do.

  When such a first deformation portion 73 is provided between the first surface 43 b of the conductive brush 43 and the first surface 63 a of the first wall portion 63 so as to always contact both surfaces, the conductive brush As the first deformation portion 73 is softly deformed or deformed so as to absorb the force of the movement of the electric motor 43 in the direction away from the commutator 33, the generation of noise can be significantly reduced.

  The first deformation portion 73 is a portion that exerts an effect similar to that of the first deformation portion 72 on the conductive brush 42 with respect to the conductive brush 43, and therefore, the first deformation portion when the motor 10 is driven. The state of 73 is the same as that described for the first deformation section 72.

Therefore, although the detailed description will be omitted, the root of the conductive brush 43 on the terminal 45 side (the position where the support of the terminal 45 of the conductive brush 43 in FIG. Of the conductive brush 43 so that the length from the F 2)) to the position F 21 (see FIG. 7A) contacting the commutator 33 of the conductive brush 43 is 0.5 or less. It is preferable that a distance between the first surface 43 b and the first surface 63 a of the first wall portion 63 (hereinafter, also referred to as a second distance) be set, and it is more preferable to be set to 0.3 or less .
Then, the first wall 63 is provided on the bracket main body 40 a so that the second distance between the first surface 43 b of the conductive brush 43 and the first surface 63 a of the first wall 63 is a predetermined distance. do it.

  In the same manner as the second distance described in the first deformation portion 72, the second distance does not contact the conductive brush 43 with the commutator 33, and the second distance is substantially the same as the first distance. The distance between the first surface 43b of the conductive brush 43 and the first surface 63a of the first wall 63 when the perpendicular is drawn from each point along the first surface 63a of the first wall 63 is determined This is the longest distance among the two.

  Also, as described for the first distance of the second deformation portion 70, if the second distance corresponding to the first deformation portion 73 is also short, the first deformation portion 73 may not be able to be sufficiently deformed. Therefore, the second distance corresponding to the first deformation portion 73 is also preferably set to 0.1 or more, and more preferably set to 0.2 or more.

Furthermore, in order to allow the first deformation portion 73 to be provided with a certain length along the first surface 43 b of the conductive brush 43, the terminal portion 45 is similar to that described for the first deformation portion 72. The length from the root of the conductive brush 43 on the side (see position F2 in FIG. 7B) to the position F21 (see FIG. 7A) in contact with the commutator 33 of the conductive brush 43 is 1 When the conductive brush 42 is drawn perpendicular to the second surface 60a of the second wall 60 from the point closest to the base of the most conductive brush 42 (see position F1 in FIG. 7B) With reference to 7 (a)), a perpendicular line from the point on the first surface 63a of the first wall 63 with respect to a point on the conductive brush 43 that is 0.4 or more from the position F22 to the commutator 33 side It is preferable that the first surface 63 a extends to the commutator 33 side to such an extent that it can pull.
Also at this time, the conductive brush 43 is not in contact with the commutator 33, and a perpendicular line is drawn to the conductive brush 42 extending substantially straight.

  By doing this, the first surface 63a corresponding to the range of 0.4 or more is provided from the position F22 close to the root of the conductive brush 43 on the terminal 45 side toward the commutator 33. The first deformation portion 73 can be provided over the range of 0.4 or more.

The relationship between the first deformation portion 73 and the second deformation portion 71 with respect to the conductive brush 43 is the same as the relationship between the first deformation portion 72 with respect to the conductive brush 42 and the second deformation portion 70.
Therefore, as described in the first deformation portion 72, both the first deformation portion 73 and the second deformation portion 71 cooperate to suppress the movement of the conductive brush 43.
Therefore, the vibration of the conductive brush 43 can be further suppressed, and noise can be significantly reduced.

  On the other hand, as shown in FIG. 5, the bracket 40 is provided on the bracket body 40a, and at least a portion of the first end 44b of the terminal 44 (see FIG. 4) (one end on one end side of the first end 44b) 44 ba) is provided.

  The gap between the housing 80 and the one end 44ba of the first end 44b of the terminal 44 (see FIG. 4) also includes the gap between the housing 80 and the first end 44b of the terminal 44. A shock absorbing member 80a formed of gel or grease in contact with both ends 44ba on one end side is provided to reduce the vibration of the conductive brush 42 or the vibration is less likely to be transmitted to the bracket 40, further noise Can be reduced.

  Similarly, as shown in FIG. 5, the bracket 40 is provided on the bracket main body 40a, and at least a portion of the first end 45b of the terminal 45 (see FIG. 4) (one end of the first end 45b) It has the accommodating part 81 which accommodates the part 45ba).

  The space between the housing 81 and the one end 45ba of the first end 45b of the terminal 45 (see FIG. 4) also includes the space between the housing 81 and the first end 45b of the terminal 45. A buffer member 81a formed of gel or grease in contact with both end portions 45ba on one end side is provided, so that vibration from the conductive brush 43 is not easily transmitted to the bracket 40, and noise can be further reduced. It has become.

  By the way, as described above, the motor 10 having the above-described configuration can significantly reduce noise, but the first deforming portion 72 and the second deforming portion 70 are electrically conductive under the influence of vibration or the like. The occurrence of a phenomenon in which the brush 42 is separated from the commutator 33 for a moment can also be suppressed.

  Therefore, the occurrence of sparks between the commutator 33 and the conductive brush 42 is suppressed, and the wear of the conductive brush 42 can be significantly reduced.

  Similarly, the first deformation portion 73 and the second deformation portion 71 also suppress the occurrence of a phenomenon in which the conductive brush 43 is separated from the commutator 33 for the moment under the influence of vibration or the like, and the commutator 33 and the conductive brush It is possible to suppress the occurrence of sparks between 43 and 43, and the wear of the conductive brush 42 can be significantly reduced.

Therefore, the life of the conductive brush 42 and the conductive brush 43 can be extended, and the life of the motor 10 can be significantly extended.
In addition, although it does not limit, it is preferable that the 1st deformation | transformation part 72 and the 2nd deformation | transformation part 70 are provided in 1/3 or more of the length of the electroconductive brush 42. As shown in FIG.
Similarly, it is preferable that the first deformation portion 73 and the second deformation portion 71 be provided in a range of 1/3 or more of the length of the conductive brush 43.

Second Embodiment
Next, a motor 10 according to a second embodiment of the present invention will be described with reference to FIG.
Also in the second embodiment, the basic configuration is the same as that of the first embodiment, and only the configuration of the bracket 40 is different from the first embodiment.
Therefore, in the following, the bracket 40 of the second embodiment will be mainly described, and the description of the same points as the first embodiment may be omitted.

The bracket 40 of the second embodiment is, as shown in FIG. 8, formed integrally with the bracket main body 40a and the bearing plate 40b of the first embodiment.
And in 1st Embodiment, as shown in FIG.4 and FIG.5, the 1st wall parts 62 and 63 and the 2nd wall parts 60 and 61 were formed separately.

  On the other hand, in the second embodiment, as shown in FIG. 8, one concave portion 85 is formed in the thick-walled bracket 40, and the first inner surface of the concave portion 85 (hereinafter referred to as the inner wall surface) The surfaces 62a and 63a, the second surfaces 60a and 61a, the housings 80 and 81, and the like are integrally configured.

  In this case, portions forming the first surfaces 62a and 63a and the second surfaces 60a and 61a of the recess 85 become the first wall portions 62 and 63 and the second wall portions 60 and 61 in the first embodiment.

  In the second embodiment, with respect to the first surface 42 b of the conductive brush 42, the first surface 62 a formed by a part of the inner wall surface of the recess 85 of the bracket 40 is the commutator 33 side (the center of the bracket 40 It is formed as an inclined surface in which the distance from the first surface 42 b of the conductive brush 42 increases toward the side surface).

Thus, even in the first surface 62a formed as an inclined surface where the distance from the first surface 42b of the conductive brush 42 is increased, the perpendicular from the first surface 62a to the first surface 42b of the conductive brush 42 It is preferable to set the distance between the first surface 42 b of the conductive brush 42 and the first surface 62 a to the second distance described in the first embodiment.
Moreover, it is preferable to make the state extended to the commutator 33 side of the 1st surface 62a the same as that of 1st Embodiment demonstrated.

  Similarly, with respect to the first surface 43 b of the conductive brush 43, the first surface 63 a formed by a part of the inner wall surface of the concave portion 85 of the bracket 40 goes to the commutator 33 side (central side of the bracket 40) The conductive brush 43 is formed as an inclined surface in which the distance from the first surface 43 b is increased.

Also in the first surface 63a, it is preferable to set the distance between the first surface 43b of the conductive brush 43 and the first surface 63a to the second distance described in the first embodiment.
Moreover, it is preferable to make it the same as that of 1st Embodiment having demonstrated the state extended to the commutator 33 side of the 1st surface 63a.

  And although illustration is abbreviate | omitted in FIG. 8, a gel or grease etc. are inject | poured between the 1st surface 62a comprised by the inner wall face of the recessed part 85, and the 1st surface 42b of the electroconductive brush 42, A first deformation portion always in contact (always in close contact) with the first surface 62 a constituted by the inner wall surface of the recess 85 and the first surface 42 b of the conductive brush 42 is provided.

  Further, gel or grease is injected between the first surface 63 a constituted by the inner wall surface of the recess 85 and the first surface 43 b of the conductive brush 43, and the first surface constituted by the inner wall surface of the recess 85 A first deformation portion always in contact (always in close contact) with the first surface 43 b of the conductive brush 43 is provided.

  Furthermore, gel or grease is injected between the second surface 60 a constituted by the inner wall surface of the recess 85 and the second surface 42 a of the conductive brush 42, and the second surface constituted by the inner wall surface of the recess 85 A second deformation portion always in contact (always in close contact) with the second surface a of the conductive brush is provided.

  In addition, gel or grease or the like is injected between the second surface 61 a formed by the inner wall surface of the recess 85 and the second surface 43 a of the conductive brush 43, and the second surface configured by the inner wall surface of the recess 85 A second deformation portion always in contact (always in close contact) with the surface 61 a and the second surface 43 a of the conductive brush 43 is provided.

Furthermore, in addition, gel, grease or the like is also injected into the containing portion 80, 81.
It is not necessary to separately perform the gel or grease injection operation described above, and the gel or the gel forming part for forming the first deformation portion, the accommodation portion 80 and the second deformation portion provided for the conductive brush 42 may be performed at one time. It is sufficient to inject grease.
Similarly, gel or grease may be injected at one time into the portions forming the first deformation portion, the accommodation portion 81 and the second deformation portion provided for the conductive brush 43.
Also in the bracket 40 of the second embodiment configured as described above, the same advantages as the first embodiment can be obtained.

Also in the second embodiment, as shown in FIG. 8, the rubber member 70 a is provided on the second surface 42 a of the conductive brush 42.
However, the rubber member 70a may be omitted, and may be provided on the first surface 42b side of the conductive brush 42, and on both the first surface 42b and the second surface 42a of the conductive brush 42. It may be provided.

  Similarly, although the rubber member 71a is provided on the second surface 43a of the conductive brush 43, the rubber member 71a may be omitted, and provided on the side of the first surface 43b of the conductive brush 43. Alternatively, they may be provided on both the first surface 43 b and the second surface 43 a of the conductive brush 43.

The constant contact (always in close contact) in the second embodiment is also to be understood in the same meaning as described in the first embodiment.
That is, as long as no unusual situation such as peeling occurs in the process of using the motor 10, it means that it is always in contact (close contact), which is understood to mean that it keeps in contact (close contact) forever Note that it should not be.

(Rotation device)
Next, as an example using the motor 10 having the above-described configuration, a rotating device 50 that controls rotation of the louver 104 (see FIG. 12) used in the air conditioning system 100 (see FIG. 12) such as an automobile hereinafter. ,explain.

  9 is a perspective view showing a rotating device 50 using the motor 10, FIG. 10 is a perspective view of the rotating device 50 with the first housing 53 removed, and FIG. 11 is a second housing 56 of the rotating device 50. It is the perspective view which looked at the 2nd surface part 54 side of this.

  As shown in FIG. 9, the rotating device 50 includes a first surface 53 as a surface and a first casing 53 having a first side wall 52 provided on the outer periphery of the first surface 51, and a second surface as a surface. A housing 57 is formed by combining a second housing 56 having a second side wall 55 provided on the surface 54 and the outer periphery of the second surface 54.

  The housing 57 is formed of a resin material such as polypropylene, polybutylene terephthalate, or ABS.

  And attachment parts A, B, C, and D for attaching rotation apparatus 50 to air conditioning system 100 (refer to Drawing 12) on the perimeter of the 1st case 53 are formed in one with the 1st side wall part 52, and There is.

  On the other hand, as shown in FIG. 10, the rotating device 50 includes the motor 10 having the configuration described in the first embodiment and the second embodiment as various components accommodated in the housing 57 (see FIG. 9). , And a plurality of gears 90 including an output gear 95 for mechanically outputting the rotation of the rotation shaft 31 (see FIG. 1) of the motor 10 to the outside, and a sensor 97 for detecting a rotation angle of the output gear 95. .

  Further, an opening 54a (see FIG. 11) is provided in a portion corresponding to the center side of the output gear 95 in the second surface portion 54 of the second housing 56, and as shown in FIG. The engaging portion 95 a of the output gear 95 can be accessed from the outside through the opening 54 a provided in the second surface 54 of the body 56.

  Then, for example, a drive shaft (see the rotation shaft 104a in FIG. 12) of the louver 104 (see FIG. 12) of the air conditioning system 100 provided in a vehicle such as a car (not shown) is engaged with the engagement portion 95a of the output gear 95, By controlling the rotation of the motor 10, rotation control of the louver 104 is performed.

The rotation control of the motor 10 is performed based on the relationship between the rotation of the output gear 95 and the drive of the louver 104 (see FIG. 12).
Therefore, as shown in FIG. 10, a signal corresponding to the rotation of the output gear 95 is output by the sensor 97 disposed on the output gear 95, and the rotation of the motor 10 is controlled based on the output signal. It is supposed to be.

  In the present embodiment, as shown in FIG. 10, the rotation shaft 31 (see FIG. 1) of the motor 10 via the plurality of transmission gears 94 (the worm gear 91, the first two-step gear 92 and the second two-step gear 93). ) Is transmitted to the output gear 95.

  Specifically, the transmission gear 94 includes a worm gear 91 fixed to the rotation shaft 31 (see FIG. 1) of the motor 10, a gear 92a having a large diameter connected to the worm gear 91, and a gear 92b having a small diameter. A two-stage gear 92, a large-diameter gear 93a connected to the small diameter gear 92b of the first two-stage gear 92, and a second two-stage gear 93 having a small diameter gear connected to the output gear 95; Have.

By doing this, the rotation of the rotation shaft 31 (see FIG. 1) of the motor 10 is transmitted to the output gear 95 at a predetermined gear ratio by utilizing a small space.
However, the rotation is not necessarily transmitted to the output gear 95 by three transmission gears, and the first two-stage gear 92 and the second two-stage gear 93 may be omitted as necessary.

(Vehicle equipped with air conditioning system)
The rotation device 50 as described above is used, for example, in the air conditioning system 100 of a vehicle such as a car, and hereinafter, a case where it is easily used in the air conditioning system 100 of the vehicle will be described.

  FIG. 12 is a schematic view for explaining an air conditioning system 100 provided with the rotation device 50 of the embodiment, and FIG. 13 is a view showing a vehicle provided with the air conditioning system 100 of FIG.

  As shown in FIG. 12, the air conditioning system 100 includes a blower fan 101, an evaporator 102, a heater 103, and a louver 104, which are disposed in the front portion FR (see FIG. 13) of the vehicle.

  More specifically, the blower fan 101 is disposed on the suction port 100a side of the air conditioning system 100, and the evaporator 102 for cooling the air delivered from the blower fan 101 is disposed on the downstream side in the air flow direction.

  Further, the heater 103 is disposed downstream of the evaporator 102 in the air flow direction, the louver 104 is disposed between the evaporator 102 and the heater 103, and the louver 104 flows from the evaporator 102 to the heater 103. By controlling the air supply amount, the temperature of the air is adjusted to an appropriate temperature.

Then, the air adjusted to an appropriate temperature is further supplied into the vehicle compartment from a blower outlet provided in the vehicle compartment via a duct or the like. In the above-described air conditioning system 100, for example, The rotation shaft 104a of the louver 104 is connected to the engagement portion 95a (see FIG. 11) of the output gear 95 of the rotation device 50 described above.
Therefore, as described above, the louver 104 is controlled to rotate (see the double arrow in FIG. 12) by the rotating device 50 and is brought into a predetermined state.

Note that the above only shows an example of the rotation device 50 in the air conditioning system 100. For example, the air conditioning system 100 may circulate air outside the passenger compartment and take in air outside the passenger compartment into the passenger compartment. In some cases, the flow path (duct path) may be switched, and a louver is also provided in the switching portion.
For this reason, the rotating device 50 can be suitably used to control the louver provided in this switching portion.

As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to embodiment, It can not be overemphasized that it can change variously in the range which does not deviate from the summary of this invention.
Therefore, it is within the technical scope of the present invention to carry out various modifications without departing from such a subject matter, which will be apparent from the description of the claims to those skilled in the art. .

Reference Signs List 10 motor 20 frame portion 21 bottom portion 21a hole portion 21b bearing portion 22 side wall portion 22a opening portion 30 amateur 31 rotation shaft 31a other end portion 32 Core, 32a: pole, 33: commutator, 33a: sheet metal, 40: bracket, 40a: bracket body, 40ab: bottom portion, 40b: bearing plate, 40ba: bearing portion, 41: bearing, 42: conductive brush, 42a ... Second surface 42b: first surface 43: conductive brush 43a: second surface 43b: first surface 44: terminal portion 44a: terminal 44b: first end portion 44ba: one end portion 45 ... terminal portion 45a ... terminal 45b ... first end, 45ba ... one end, 46 ... groove, 47 ... groove, 48 ... opening, 49 ... opening, 50 ... rotating device, 51 ... first surface, 52 ... 1st side wall part, 53 ... 1st case 54: second surface portion, 54a: opening portion, 55: second side wall portion, 56: second housing, 57: housing, 60: second wall portion, 60a: second surface, 61: second wall portion, 61a: second surface 62: first wall portion 62a: first surface 63: first wall portion 63a: first surface 70: second deformation portion 70a: rubber member 70b: buffer member 71 ... second deformation portion, 71a: rubber member, 71b: shock absorbing member, 72: first deformation portion, 73: first deformation portion, 80: accommodation portion, 80a: cushioning member, 81: accommodation portion, 81a: cushioning member, 85: Recess, 90: Gear, 94: Transmission gear, 91: Worm gear, 92: First two-stage gear, 92a: Large diameter gear, 92b: Small diameter gear, 93: Second two-stage gear, 93a: Diameter Gear, 95 ... output gear, 95a ... engaging part, 97 ... sensor, 100 ... air conditioning system, 1 1 ... blower fan, 102 ... evaporator 103 ... heater, 104 ... louver, 104a ... rotational axis, A, B, C, D ... mounting portion, FR ... front portion

Claims (10)

With a commutator,
A conductive brush having a second surface in contact with the commutator and a first surface opposite to the second surface;
A terminal portion having a first end portion having an end portion to which the conductive brush is attached;
A bracket having the conductive brush, a housing portion for housing one end of the first end, and a groove in which the other end of the first end is disposed;
Equipped with
The terminal portion is bent from the housing portion toward the groove portion,
In the bracket, a first wall provided on the first surface side of the conductive brush and a second wall provided on the second surface side of the conductive brush on the commutator side with respect to the housing portion 2 walls and are provided,
There is a first deformation portion in contact with the first surface of the conductive brush and the first wall portion, and the first deformation portion has a buffer member.
There is a second deformation portion in contact with the second surface of the conductive brush and the second wall portion, and the second deformation portion includes a rubber member and a buffer member.
The buffer member of the second deformation portion is in the housing portion,
The buffer member of the first deformation portion is on the commutator side with respect to the other end of the first end portion.   The buffer member of the second deformation portion in the housing portion is in contact with the inner surface of the bracket forming the housing portion, the conductive brush, and one end portion of the first end portion. Motor described.   The buffer member of the second deformation portion is in contact with the end portion of the conductive brush on the terminal portion side and the inner surface of the bracket on the second surface side of the conductive brush. Motor described.   The motor according to any one of claims 1 to 3, wherein the buffer member of the second deformation portion surrounds an end of the conductive brush on the terminal portion side.   The buffer member of the second deformation portion is in contact with one end portion of the first end portion and the inner surface of the bracket on the first surface side of the conductive brush. The motor according to item 1.   The motor according to any one of claims 1 to 5, wherein the first deformation portion includes gel or grease.   The motor according to any one of claims 1 to 6, wherein the second deformation portion contains gel or grease. An amateur having the commutator,
And the frame part
And a magnet provided in the frame portion,
The frame portion has a bottom portion provided with a hole for leading the rotary shaft of the armature to the outside;
A side wall covering the outer periphery of the armature having an opening opposite to the bottom;
The magnet is provided on an inner wall surface facing the armature of the side wall portion of the frame portion,
The motor according to any one of claims 1 to 7, wherein the bracket is attached to the opening of the frame portion. A motor according to any one of claims 1 to 8;
A plurality of gears including an output gear for outputting the rotation of the motor to the outside;
And a housing for accommodating the plurality of gears and the motor. A rotating device according to claim 9;
And a louver controlled by said rotating device.

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