JP2020114177A - Rotary device - Google Patents

Abstract

To provide a rotary device which achieves improvement of quietness.SOLUTION: A rotary device 10 of the invention includes: a motor 30 having a rotary shaft 32; multiple gears 60 which output rotation of the rotary shaft 32 to the outside; and a housing 20 which houses the motor 30 and the gears 60. The housing 20 can be separated into a first housing 23 and a second housing 27, and the motor 30 includes: a first end part 31a from which the rotary shaft 32 is led out; and a second end part 31b positioned at the opposite side of the first end part 31a. The second housing 27 includes a first restriction part 91 which restricts a first end part 31a side position of the motor 30. The first housing 23 includes a protruding part 97 which protrudes toward the second housing 27 side. The protruding part 97 biases the second end part 31b of the motor 30 toward the first restriction part 91 side directly or through another member.SELECTED DRAWING: Figure 2

Description

The present invention relates to a rotating device.

For example, Patent Document 1 discloses a motor actuator (rotating device) that drives a plurality of doors (louvers) provided in the middle of an air passage in the vehicle air conditioning system.

Japanese Patent Laid-Open No. 2015-220969

By the way, in recent years, the quietness of the environment inside the vehicle has tended to increase, but in the case of a vehicle driven by a motor such as an electric vehicle, the noise generated by the internal combustion engine is not emitted, and thus the quietness in the vehicle is significantly increased.

With such a high level of quietness, even in a vehicle equipped with an internal combustion engine, even a sound that is not noticeable becomes noticeable in the vehicle, and therefore, in various parts, It is believed that even higher noise levels will be required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotating device with improved quietness.

The present invention is grasped by the following configurations in order to achieve the above object.
(1) A rotating device of the present invention includes a motor having a rotating shaft, a plurality of gears including an output gear that outputs the rotation of the rotating shaft to the outside, and a housing that houses the motor and the gear. The housing is separable into a first housing and a second housing, and the motor is located on the opposite side of the first end from which the rotation shaft is derived and the first end. A second end portion, the second housing includes a first restriction portion that restricts a position of the motor on the first end portion side, and the first housing is disposed on the second housing side. The projection includes a projection that projects toward the first restriction portion side, either directly or through another member.

(2) In the configuration of (1) above, the second housing includes a second restricting portion that restricts a position of the motor on the second end side, and a receiving portion that receives the protruding portion. The portion is provided apart from the second end portion of the motor in the rotation axis direction away from the motor, and the protruding portion is press-fitted between the receiving portion and the second restricting portion.

(3) In the configuration of (2) above, the second end portion of the motor has a second bearing portion, and the second restricting portion is a wall facing the second bearing portion in the rotation axis direction. A portion, the receiving portion includes a surface portion that faces the wall portion, and the protrusion is press-fitted between the surface portion and the wall portion.

(4) In the configuration of (3) above, the second restricting portion includes a pair of side portions connected by the wall portion, and the second bearing portion is disposed between the pair of side portions. ing.

(5) In the above configuration (3) or (4), the receiving portion is provided apart from the wall portion by a first distance in the rotation axis direction, and is provided between the receiving portion and the wall portion. A width of a part of the protruding portion to be inserted is larger than the first distance.

(6) In the configuration of (1) above, the second end portion of the motor has a second bearing portion, the second housing includes a receiving portion that receives the protruding portion, and the receiving portion is Is provided so as to be separated from the second bearing portion by a first distance in the rotation axis direction, and the protrusion is press-fitted between the second bearing portion and the receiving portion.

(7) In the configuration of (6) above, the protrusion directly urges the second bearing portion toward the first regulating portion.

(8) In the configuration of (6) or (7), the second casing includes a second restricting portion that restricts a position of the motor on the second end side, and the second restricting portion includes: A wall portion that faces the second bearing portion in the rotation axis direction is provided, and the wall portion has a cutout portion that is open to the first housing side, and the projecting portion is inserted into the cutout portion. ..

(9) In the configuration according to any one of (6) to (8), the width of a part of the protruding portion inserted between the receiving portion and the second bearing portion is larger than the first distance.

(10) In the configuration of (5) or (9), the tip of the protrusion has a wedge shape that is smaller than the first distance.

(11) The rotating device of the present invention includes a motor having a rotating shaft, a plurality of gears including an output gear that outputs the rotation of the rotating shaft to the outside, and a housing that houses the motor and the gear. The housing is separable into a first housing and a second housing, and the motor is located on the opposite side of the first end from which the rotation shaft is derived and the first end. A second end portion, the second housing includes a second restriction portion that restricts a position of the motor on the second end portion side, and the first housing faces the second housing side. A protrusion that protrudes, and the protrusion urges the first end of the motor toward the second restriction portion directly or through another member.

(12) In the configuration of (11) above, the second housing includes a receiving portion that is provided apart from the first end portion of the motor in the rotation axis direction away from the motor. The protruding portion is press-fitted between the portion and the second restricting portion.

(13) In the configuration according to any one of (2) to (5) and (8), the first casing is separated from the second casing in the first regulating portion and the second regulating portion. In such a state, the motor is provided so as to be press-fitted between the first restricting portion and the second restricting portion.

(14) The rotating device of the present invention includes a first housing, a second housing, and a motor, and the motor is arranged between the first housing and the second housing. , A protrusion that protrudes toward the second casing is provided inside the first casing, and the second casing contacts one surface of both surfaces of the motor in the rotation axis direction. The contact portion is provided, and the protrusion urges the other surface of both surfaces of the motor toward the contact portion directly or via another member.

(15) In the configuration of (14) above, a plurality of gears are provided between the first housing and the second housing, and the motor has a rotating shaft that contacts the gears.

According to the present invention, it is possible to provide a rotating device with improved quietness.

It is a perspective view of a rotation device of a 1st embodiment concerning the present invention. FIG. 3 is a perspective view in which the first housing and the second housing of the first embodiment according to the present invention are separated so that the inside of the housing can be seen. It is an exploded perspective view of the rotation device of a 1st embodiment concerning the present invention. It is the perspective view which made the 2nd surface side of the 2nd housing of the rotation device of a 1st embodiment concerning the present invention visible. FIG. 3 is a perspective view in which the first housing and the second housing of the first embodiment according to the present invention are separated, various components housed in the housing are omitted, and the inside of the housing is visible. It is sectional drawing which cut|disconnected the rotating device of 1st Embodiment which concerns on this invention along the rotating shaft. It is a perspective view showing the 2nd case of a 1st embodiment concerning the present invention. It is a perspective view which shows the housing|casing of 2nd Embodiment which concerns on this invention. It is sectional drawing cut|disconnected along the rotating shaft for demonstrating the state in which the motor is provided in the housing|casing of 2nd Embodiment which concerns on this invention.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.
The same elements are denoted by the same numbers throughout the description of the embodiments.

(First embodiment)
FIG. 1 is a perspective view of a rotating device 10 according to a first embodiment of the invention.
As shown in FIG. 1, the rotating device 10 includes a housing 20 configured by combining a first housing 23 and a second housing 27.
The first housing 23 and the second housing 27 are made of a resin material such as polypropylene, polyethylene terephthalate, ABS or the like.

The first housing 23 has a first surface portion 21 as a surface portion and a first side wall portion 22 provided on an outer peripheral portion of the first surface portion 21, and the rotary device 10 is air-conditioned at four corners of the first housing 23. Mounting portions A, B, C, D for mounting on an air conditioner or the like that constitutes the system are integrally formed on the outer periphery of the first side wall portion 22.
The first side wall portion 22 becomes a part of the tubular portion of the housing 20.
The planar shape (outer shape) of the cylindrical portion of the housing 20 is a polygon having a plurality of corners in the illustrated example.

The second housing 27 also has a second surface portion 25 as a surface portion and a second side wall portion 26 provided on the outer peripheral portion of the second surface portion 25.
The second side wall portion 26 becomes a part of the tubular portion of the housing 20.
That is, the first side wall portion 22 and the second side wall portion 26 form a tubular portion of the housing 20.

FIG. 2 is a perspective view in which the first housing 23 and the second housing 27 are separated so that the inside of the housing 20 can be seen, and FIG. 3 is an exploded perspective view of the rotating device 10.
As shown in FIG. 2, in the first housing 23, a plurality of engaging portions 22 b provided on the outer periphery of the first side wall portion 22 and extending toward the second housing 27 are formed integrally with the first side wall portion 22. A recess 22a is provided on the inner surface of the engaging portion 22b.
Here, the inner surface refers to a surface facing the inside of the first housing 23.

An accommodating portion for accommodating the external connector is provided in the tubular portion of the housing 20.
This accommodating portion forms a connector of the rotating device 10 described later.
The accommodating portion includes a portion 22d of the first side wall portion 22 of the first housing 23 facing each other, a portion 21a of the first surface portion 21 straddling the portion 22d, and a second side wall portion 26 of the second housing 27 facing each other. And a portion 25b of the second surface portion 25 of the second housing 27 that straddles between the portions 26b.

A portion 22d of the first side wall portion 22 and a portion 26b of the second side wall portion 26 are outside the other portion of the first side wall portion 22 and the other portion of the second side wall portion 26 that form the tubular portion of the housing 20. It has a shape protruding toward.

In addition, regarding the region X that constitutes the accommodating portion that accommodates the external connector, similarly, the engaging portions 22 c that extend toward the pair of second housings 27 on the first side wall portion 22 are integrated with the first side wall portion 22. The engaging portion 22c is provided with a hole 22ca.

On the other hand, in the second housing 27, the recess 22a of the engaging portion 22b is provided on the outer peripheral surface of the second side wall portion 26 corresponding to each of the plurality of engaging portions 22b and the pair of engaging portions 22c of the first housing 23. A plurality of protrusions 26a that are engaged with the holes 22ca of the engaging portion 22c are formed integrally with the second side wall portion 26.
The protrusion 26a serves as an engaged portion that engages with the engaging portion 22b and the pair of engaging portions 22c.

Then, the first housing 23 and the second housing 27 are arranged so that the projections 26a of the second housing 27 are engaged with the recesses 22a of the engaging portion 22b of the first housing 23 and the holes 22ca of the engaging portion 22c. By combining them, the first housing 23 and the second housing 27 are integrated to form a housing 20 (see FIG. 1) that houses various components shown in FIG.
Note that the second housing 27 may be provided with an engaging portion having a recess or a hole, and the first housing 23 may be provided with a protrusion that engages with the recess or the hole.

As shown in FIG. 2, the rotating device 10 mechanically outputs the rotation of the motor 30 and the rotation shaft 32 of the motor 30 to the outside as various components housed in the housing 20 (see FIG. 1). A plurality of gears 60 including the output gear 50, a sensor 70 that detects a rotation angle of the output gear 50, and a flexible wiring that electrically connects the motor terminal 33 of the motor 30 and the second connection terminal 35 for external connection. A substrate 80 (see FIG. 3).

That is, inside the first housing 23 and the second housing 27 (between the first housing 23 and the second housing 27), the motor 30, the plurality of gears 60, the sensor 70, and the flexible wiring board. 80 and are arranged.

Further, as shown in FIG. 3, the second housing 27 is provided with an opening 25a corresponding to the center of the output gear 50.

FIG. 4 is a perspective view in which the second surface 27 side of the second housing 27 of the rotating device 10 is visible.
As shown in FIG. 4, the engaging portion 51 of the output gear 50 can be accessed from the outside through an opening 25a provided in the second surface portion 25 of the second housing 27. The drive shaft of the louver of the air conditioning system provided in the vehicle is engageable with the engaging portion 51 of the output gear 50.

Therefore, by rotating the output gear 50, for example, an air conditioner of an air conditioning system provided in an automobile or the like and a louver provided on an air flow path are controlled to control the flow rate of air in the air conditioning system to a predetermined flow rate. You can

(motor)
The motor 30 is a drive device for rotating the output gear 50, and a DC motor is used in this embodiment.
As shown in FIGS. 2 and 3, the motor 30 includes a main body 31 having a rectangular columnar outer shape with curved corners, a first end 31a of the main body 31 from which the rotary shaft 32 is drawn, and a main body. A second end 31b located on the opposite side of the first end 31a of 31 and a pair of motor terminals 33 provided on the second end 31b so as to protrude outward are provided.

Further, the first end portion 31a is provided so as to project in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2), accommodates a bearing that rotatably supports the rotation shaft 32, and the rotation shaft 32 is led out from the center. The first bearing portion 31aa is provided.
The first bearing portion 31aa rotatably supports the rotating shaft 32.

Similarly, the second end portion 31b is also provided so as to project in the direction of the rotation shaft 32, and has a second bearing portion 31bb that accommodates a bearing that rotatably supports the rotation shaft 32.
The second bearing portion 31bb rotatably supports the rotating shaft 32.
The motor 30 includes a stator and a rotor inside a main body 31, and the rotary shaft 32 is fixed to the rotor.

(Transmission gear)
As shown in FIGS. 2 and 3, the plurality of gears 60 include a transmission gear 40. The transmission gear 40 causes the rotation of the rotation shaft 32 of the motor 30 to the output gear 50 at a predetermined gear ratio. It is a gear for transmitting.
In this embodiment, three gears (a worm gear 41, a first two-stage gear 42, and a second two-stage gear 43) are used as the transmission gear 40.

Specifically, as shown in FIG. 2, the transmission gear 40 includes a worm gear 41 fixed to the rotation shaft 32 of the motor 30, and a large diameter gear 42a and a small diameter gear 42b connected to the worm gear 41. A first two-stage gear 42, a large-diameter gear 43a connected to the small-diameter gear 42b of the first two-stage gear 42, and a small-diameter gear 43b (see FIG. 3) connected to the output gear 50; 2 two-stage gear 43, and.

In the present embodiment, the first two-stage gear 42 and the second two-stage gear 42 are arranged so that the rotation of the rotating shaft 32 of the motor 30 is transmitted to the output gear 50 while adjusting the gear ratio using a small space. Although 43 is used, it is not limited to this.
For example, the second two-stage gear 43 may be omitted and the output gear 50 may be connected to the gear 42b having a smaller diameter than the first two-stage gear 42. The first two-stage gear 42 and the second two-stage gear 43 may be connected to each other. Alternatively, the output gear 50 may be directly connected to the worm gear 41.

(Output gear)
As described above, the output gear 50 is a gear to which the drive shaft of the louver (not shown) of the air conditioning system is connected and which outputs the rotation of the rotary shaft 32 of the motor 30 as a drive force for controlling the drive shaft of the louver.

The output gear 50 is not limited to the one in which the drive shaft of the louver is directly connected, but a gear interposed between the rotating device 10 and the drive shaft of the louver (not shown) may be provided. The rotating shaft of the intervening gear is connected to the output gear 50.

(sensor)
The louver is controlled to be in a predetermined state based on the relationship between the rotation of the output gear 50 and the driving state of the louver.

In order to control the louver, it is necessary to detect the rotation state (rotation angle) of the output gear 50, and the sensor 70 is a sensor that detects the rotation angle of the output gear 50. More specifically, It is a sensor that outputs an output signal according to the rotation angle.

Then, by controlling the rotation of the motor 30 based on the detected rotation angle of the output gear 50, the rotation control of the output gear 50 is performed so that the louver (not shown) is brought into a predetermined state.

In the present embodiment, a rotary resistance position sensor is used as the sensor 70.
Specifically, as shown in FIGS. 2 and 3, the sensor 70 includes three first connection terminals 71 for input and output for obtaining a rotation angle signal according to the rotation angle of the output gear 50, and a first connection terminal 71. A resistor substrate 72, in which a resistor to which the connection terminal 71 is electrically connected, is printed on a resin substrate, is provided.

Further, the sensor 70 has a conductive brush (not shown) that comes into contact with the resistor of the resistor substrate 72, and a rotor (not shown) that rotates integrally with the output gear 50 that detects the rotation angle, and arranges them. And a cover portion 74 that is provided at a position corresponding to a rotating body (not shown) and that forms a housing (may be referred to as a sensor housing) of the sensor 70 with the base portion 73. I have it.

As the resin substrate used for the resistor substrate 72, for example, an epoxy resin substrate having a thickness of about 300 μm to 1600 μm can be used and is harder than a flexible wiring substrate 80 described later.

Here, a specific operation of the sensor 70 will be briefly described.
A rotating body (not shown) engaged with the rotating shaft of the output gear 50 is rotatably provided on the base portion 73.
The position of the conductive brush (not shown) provided on the resistor substrate 72 side of the rotating body is changed with the rotation of the rotating body, with respect to the resistor substrate 72 that is spaced apart from the rotating body. It has become.
The conductive brush is in contact with the resistor of the resistor substrate 72.

When the position of the conductive brush in contact with the resistor of the resistor substrate 72 changes, the output voltage also changes as the resistance value between the input and output terminals changes, and the rotation angle is changed based on the change of the output voltage. Can be asked.

The calculation for obtaining the rotation angle based on the output voltage may be performed inside the sensor 70 by mounting an integrated circuit or the like on the sensor 70. Conversely, the calculation may be performed by a control device provided outside. However, in the present embodiment, an external control device is used to perform the calculation for obtaining the rotation angle.

However, the sensor 70 does not have to be limited to a rotary resistance position sensor, and for example, a sensor substrate on which a conductive portion is formed so that ON/OFF is repeated by a conductive brush as the rotating body rotates. It may be a sensor of the type that outputs this ON-OFF by using.
Even if such ON-OFF is output, the rotation angle of the rotating body can be obtained based on the number of times of ON-OFF.

On the other hand, the base portion 73 is provided with three input/output first connection terminals 71 forming the connector of the rotating device 10 and two second connection terminals 35 for the motor 30.
Specifically, as shown in FIG. 2, the output gear 50 and the sensor 70 are disposed on the side of the main body 31 of the motor 30, that is, in the direction substantially orthogonal to the rotation axis 32 direction (Z-axis direction) of the motor 30. It is arranged along the second surface portion 25 of the second housing 27 (on the side of the second side wall portion 26 of the second housing 27 far from the motor 30 in the X-axis direction).

Then, the base portion 73 of the sensor 70 includes a terminal arrangement portion in which terminals are arranged so that the second connection terminals 35 for the motor 30 can be arranged.
The terminal arrangement portion is formed so as to project from the sensor 70 to the motor 30 side.

In this terminal placement portion, the first connection terminal 71 is placed on the side distant from the motor 30 in the direction substantially orthogonal to the rotation axis 32 direction (Z-axis direction) of the motor 30, and on the side close to the motor 30. The second connection terminal 35 is arranged, and by using the terminal arrangement portion, the motor terminal 33 of the motor 30 and the second connection terminal 35 for the motor 30 are electrically connected in a short distance. You can do it.

In this way, not only the three first connection terminals 71 for input and output of the sensor 70 are fixed to the base portion 73 of the sensor 70, but also the two second connection terminals 35 for the motor 30 can be fixed. This eliminates the need to provide a fine structure for fixing the two second connection terminals 35 for the motor 30 to the housing 20 (see FIG. 1), and makes the mold for forming the housing 20 complicated. Is suppressed, and the manufacturing cost of the housing 20 can be reduced.

Instead, it is necessary to make the terminal arrangement portion of the base portion 73 of the sensor 70 capable of arranging the two second connection terminals 35 for the motor 30, but the base portion 73 can be seen in FIGS. 2 and 3. As can be seen, even if the two second connection terminals 35 are arranged, the shape is extremely simple, and the mold etc. does not become complicated, so the manufacturing cost does not increase and the entire product is The manufacturing cost can be suppressed from the viewpoint of the total cost.

In the present embodiment, as shown in FIGS. 2 and 3, a protrusion corresponding to each terminal (the first connection terminal 71 and the second connection terminal 35) is formed on the base portion 73 of the sensor 70, and each terminal (first The protrusion is press-fitted into the holes provided in the connection terminal 71 and the second connection terminal 35).

With such a configuration, each terminal (first connection terminal 71 and second connection terminal 35) is fixed on the base portion 73.
However, the method of fixing each terminal (the first connection terminal 71 and the second connection terminal 35) to the base portion 73 does not need to be particularly limited, and may be a method of fixing using an adhesive or the like. ..

By disposing the second connection terminal 35 on the base portion 73, it is possible to prevent the second connection terminal 35 from coming into contact with the components housed in the housing 20 (see FIG. 1), and reliability is improved. Can be improved.

Further, by arranging the three first connection terminals 71 for input and output of the sensor 70 and the two second connection terminals 35 for the motor 30 so as to be integrated in the base portion 73 in this way, the storage of the terminals becomes complicated. Since it can be suppressed, the rotating device 10 can be downsized as a whole.

The two second connection terminals 35 for the motor 30, which are arranged in the terminal arrangement portion of the base portion 73 and fixed in this way, are connected to the respective motor terminals of the motor 30 by the flexible wiring board 80 shown in FIG. Electrically connected to 33.

(Flexible wiring board)
The flexible wiring board 80 is formed of, for example, an insulating resin material such as polyimide or polyester, and has a thickness of 12 μm to 50 μm, an adhesive layer formed on the film, and an adhesive layer on the film. It has a printed or laminated conductor.
The adhesive layer is formed of, for example, an epoxy resin material or an acrylic resin material.
The conductor is formed of a metal member such as a copper foil having a thickness of about 12 μm to 50 μm.

The flexible wiring board 80 is a flexible board that can be restored to its original shape even if it is bent at an angle of 90 degrees or more, and the connection between the second connection terminal 35 for the motor 30 and the motor terminal 33 is made. Easy to work with.

As an example of a specific connecting operation, the second connecting terminal 35 has a connecting portion 35a in which a base end portion opposite to the tip end portion is bent, as shown in FIG. The second connection terminal 35 and the flexible wiring board 80 are connected by soldering after engaging the holes 81 of the board 80.

Further, in FIG. 3, the motor 30 is arranged in the second housing 27. However, with respect to the motor 30 before such arrangement, the motor terminal 33 of the motor 30 is continuously connected to the hole of the flexible wiring board 80. The motor terminals 33 of the motor 30 and the second connection terminals 35 are connected by the flexible wiring board 80 by connecting the motor terminals 33 and the flexible wiring board 80 by soldering after engaging 82. The work is finished.

By the way, in the present embodiment, a portion where the hole 81 is provided and a portion where the hole 82 is provided are provided in the middle of the flexible wiring board 80 from the portion where the hole 81 is provided to the portion where the hole 82 is provided. A bent portion 83 having a folded structure is provided so as to have a substantially orthogonal positional relationship.

By providing such a bent portion 83, even if the rotating device 10 vibrates or the like, the bent portion 83 absorbs the vibration, so that the flexible wiring board 80 is unlikely to be damaged or the like, and the long-term operation is prevented. The reliability can be improved.

The electric connection between the second connection terminal 35 for the motor 30 and the motor terminal 33 may be a connection using a lead wire.
However, when the lead wire is used, the lead wire itself is thin and difficult to handle. Therefore, the flexible wiring board 80 is preferable as in the present embodiment because it is easy to handle.

Therefore, by electrically connecting the second connection terminal 35 for the motor 30 and the motor terminal 33 with the flexible wiring board 80, the assembly work of the rotating device 10 can be facilitated. Therefore, the manufacturing cost can be reduced.

(Improved quietness)
As a result of intensive studies on the rotating device 10 having the above-described basic configuration, noise can be reduced by about 1.5 dB by devising a mode of fixing the motor 30 to the housing 20 (see FIG. 1), and noise reduction can be achieved. I found that I can improve.
In the present embodiment, a fixed aspect that can increase the discovered quietness is adopted, and it will be specifically described below.

FIG. 5 is a perspective view in which the first housing 23 and the second housing 27 are separated, various components housed in the housing 20 are omitted, and the inside of the housing 20 is visible.
As shown in FIGS. 2 and 5, the second housing 27 includes a first restricting portion 91 that restricts the position of a part of the motor 30 on the first end 31a side and a second restricting portion 91 on the second end 31b side of the motor 30. And a second restricting portion 92 that restricts the position of a part.

Therefore, the first restricting portion 91 prevents a part of the motor 30 on the first end portion 31a side from being displaced toward the second side wall portion 26 of the second housing in the rotation axis direction.
Similarly, the second restricting portion 92 prevents a part of the motor 30 on the second end 31b side from being displaced toward the second side wall portion 26 of the second housing in the rotation axis direction.

As shown in FIG. 2, the first restricting portion 91 is provided with a pair of protruding portions 91 a and 91 b so as to protrude from the second surface portion 25 of the second housing 27 toward the first housing 23.
The pair of protrusions 91a and 91b are arranged side by side in a direction intersecting with the rotation axis direction (direction orthogonal to the rotation axis direction in the illustrated example).
The first bearing portion 31aa included in the first end portion 31a of the motor 30 is arranged between the pair of protrusions 91a and 91b.
The first bearing portion 31aa may be sandwiched by the pair of protruding portions 91a and 91b.

A support portion 93 (see FIG. 5) for receiving the first bearing portion 31aa of the motor 30 on the side of the second housing 27 is provided between the pair of protruding portions 91a and 91b. May be connected to the pair of protrusions 91a and 91b.

The pair of protrusions 91a and 91b have a surface 91c (see FIG. 5) facing the motor 30.
The surface 91c contacts the first end 31a of the motor 30.
Specifically, the first end portion 31a has a surface facing the surface 91c at a portion located outside the first bearing portion 31aa, and the surface facing the surface 91c and the surface 91c are in contact with each other. ..
In this way, the position of a part of the motor 30 on the first end 31a side is regulated by the contact between the surface 91c and the first end 31a.

As shown in FIG. 5, the second restricting portion 92 has a U shape when viewed from the first housing 23 side in a plan view.
This 2nd control part 92 has a recessed part which accommodates the 2nd bearing part 31bb (refer FIG. 2) recessed in the side away from the motor 30 (refer FIG. 2).

Specifically, as shown in FIG. 2, the second restricting portion 92 is provided so as to project from the second surface portion 25 of the second housing 27 toward the first housing 23 side.
The second restricting portion 92 includes a pair of side portions 92a and 92b, and a wall portion 92c that connects the pair of side portions 92a and 92b.
The pair of side portions 92a and 92b are arranged side by side in a direction intersecting with the rotation axis 32 direction (Z-axis direction) of the motor 30 (in the illustrated example, a direction substantially orthogonal to the rotation axis 32 direction).

A second bearing portion 31bb included in the second end portion 31b of the motor 30 is provided between the pair of side portions 92a and 92b.
In the illustrated example, the second bearing portion 31bb is sandwiched between the pair of side portions 92a and 92b.

The wall portion 92c is provided on the end side of the second bearing portion 31bb and connects the pair of side portions 92a and 92b.
The wall 92c and the end of the second bearing 31bb face each other, and the end of the second bearing 31bb faces the wall 92c and the second side wall 26 of the second housing 27.

Then, as shown in FIG. 2, when the first housing 23 is separated from the second housing 27 and the motor 30 is arranged, the first end portion 31a of the motor 30 and the first end portion 31a The surface 91c (see FIG. 5) of the restriction portion 91 on the motor 30 side contacts.
Specifically, the first end portion 31a has a surface facing the surface 91c at a portion located outside the first bearing portion 31aa, and the surface facing the surface 91c and the surface 91c are in contact with each other. ..

In addition, as shown in FIG. 2, when the first housing 23 is separated from the second housing 27 and the motor 30 is arranged, the second end portion 31b of the motor 30 has a second end portion 31b. The bearing portion 31bb comes into contact with the wall portion 92c provided on the end portion side of the second bearing portion 31bb of the second restricting portion 92.

Therefore, when the first housing 23 is separated from the second housing 27 and the motor 30 is arranged as shown in FIG. It is press-fitted between the second restricting portions 92.
As described above, the second casing 27 is provided with the first restricting portion 91 and the second restricting portion 92.

As shown in FIG. 5, the wall portion 92c of the second restricting portion 92 has a surface on the motor 30 side, and a linear protrusion 92ca is formed on the surface on the motor 30 side.
The protrusion 92ca ensures that the motor 30 is press-fitted.

As described above, since the motor 30 is press-fitted and fixed between the first restricting portion 91 and the second restricting portion 92, the main body of the motor 30 may vibrate inside the motor 30. It was thought that the vibration of the part 31 itself was suppressed.

However, as a result of further pressing the parts of the main body 31 of the motor 30 and investigating the noise after the pressing, when the wall 92c of the second restricting portion 92 is strongly pressed toward the first restricting portion 91, It was discovered that the noise was significantly reduced.

Therefore, in this embodiment, the configuration shown in FIGS. 2 and 5 is adopted.
Specifically, the second housing 27 is separated from the second bearing portion 31bb of the second end 31b of the motor 30 by a predetermined distance in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) (the motor 30. A receiving portion 95 (see FIG. 5 and FIG. 7) provided at a position spaced apart from the wall portion 92c of the second restricting portion 92 by a predetermined distance in a direction away from.

On the other hand, the first housing 23 includes a protruding portion 97, and the protruding portion 97 protrudes toward the second housing 27 side, and is located between the receiving portion 95 and the second end portion 31b of the motor 30 (the receiving portion 95 and the receiving portion 95). It is inserted in a position between the wall portions 92c of the second restriction portion 92).

The protruding portion 97 is inserted between the receiving portion 95 and the second end portion 31b of the motor 30 to give an urging force that urges the second end portion 31b of the motor 30 toward the first restricting portion 91. ..
That is, the protruding portion 97 of the first housing 23 biases the second end 31b of the motor 30 toward the first restricting portion via the wall portion 92c as another member.

FIG. 7 is a perspective view showing the second housing 27 such that the inside of the second housing 27 is viewed.
In the present embodiment, the receiving portion 95 forms a space that accommodates a part of the protruding portion 97.
Specifically, as shown in FIG. 7, the receiving portion 95 includes a surface portion 95a facing the wall portion 92c, and a pair of side portions 95b connecting the surface portion 95a and the wall portion 92c.
In addition, the receiving part 95 should just have at least the surface part 95a which opposes the wall part 92c, and the pair of side part 95b which connects the surface part 95a and the wall part 92c is not an essential requirement.

FIG. 5 shows a state in which the first housing 23 is separated from the second housing 27 and the motor 30 is not arranged.
As shown in FIG. 5, when the first housing 23 is separated from the second housing 27 and the motor 30 is not arranged, the receiving portion 95 moves in the rotation axis 32 direction (Z in FIG. 2). It is provided so as to be separated from the wall portion 92c by a first distance (hereinafter, referred to as a first separation distance) in the axial direction).

In the direction of the rotation axis 32 (Z-axis direction in FIG. 2 ), the width of the portion of the protrusion 97 provided on the first housing 23 that is inserted between the receiving portion 95 and the wall portion 92 c is smaller than the first separation distance. Is also a large width.

In the present embodiment, the tip of the protrusion 97 has a wedge-like shape that is smaller than the first distance so that the protrusion 97 can be smoothly inserted between the receiving portion 95 and the wall 92c. ing.

Here, the tip of the protrusion 97 is the end of the protrusion 97 on the second housing 27 side.
Further, as shown in FIG. 5, the width of the tip portion in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) is smaller than the first separation distance.

FIG. 6 is a cross-sectional view of the rotating device 10 taken along the rotating shaft 32.
In addition, in FIG. 6, illustration of the internal structure of the motor 30 is omitted.
By forming the tip end of the protrusion 97 into a wedge shape, the tip end of the protrusion 97 is smooth between the receiving portion 95 and the wall portion 92c when the first casing 23 and the second casing 27 are fitted together. Get in.
In the direction of the rotation axis 32, the width of the tip of the protrusion 97 is smaller than the width of the gap between the receiving portion 95 and the wall 92c.
On the other hand, the width of the middle portion and the width of the end portion of the protruding portion 97 are larger than the width of the gap between the receiving portion 95 and the wall portion 92c.

That is, the width of the protrusion 97 increases from the front end to the end of the protrusion 97.
The middle part of the protrusion 97 is between the tip and the end, and the end of the protrusion 97 is the end of the protrusion 97 on the opposite side of the tip.

Then, as the first housing 23 and the second housing 27 are put together, the middle portion of the projecting portion 97 having a width larger than the first separation distance between the receiving portion 95 and the wall portion 92c becomes the receiving portion 95. It is press-fitted between the wall portions 92c.

After that, when the first casing 23 and the second casing 27 are completely put together to be in the state of the casing 20, as shown in FIG. 6, the protruding portion 97 has the second bearing portion via the wall portion 92c. The state in which 31bb is strongly biased toward the first restricting portion 91 (see FIGS. 2 and 5) is in a state in which noise can be significantly reduced.

The reason why the noise can be significantly reduced by such a configuration is that the vibration of the main body 31 of the motor 30 in the direction of the rotation axis 32 (Z-axis direction in FIG. 2) generated by the torque ripple of the motor 30 is suppressed. It is thought to be.

In other words, the motor 30 is configured such that the rotor can rotate with respect to the stator by rotatably supporting the rotating shaft 32 fixed to the rotor with the bearings. Therefore, the rotary shaft 32 itself is allowed to be somewhat loose in the axial direction.

In order to prevent the rotation shaft 32 from moving in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) due to the play of the rotation shaft 32, the center of the stator and the center of the magnet of the rotor are set to the rotation shaft 32. Direction (Z-axis direction in FIG. 2) and pulling the rotary shaft 32 toward one side of the rotary shaft 32 direction (Z-axis direction in FIG. 2) causes the rotary shaft 32 to rotate in the rotary shaft 32 direction (Z-axis direction in FIG. 2). Direction) is suppressed.

However, in order to rotate the rotor, it is necessary to switch the current between a plurality of coils provided in the stator, and at the time of switching the current, between the stator and the magnet of the rotor as described above. Since the strength of the pulling motion occurs, the rotary shaft 32 can move in the direction of the rotary shaft 32 (Z-axis direction in FIG. 2).

Here, when the motor 30 is arranged in the rotating device 10, since the rotating shaft 32 is connected to the first two-stage gear 42 via the worm gear 41, the rotating shaft 32 also becomes a fixed end, and the stator and the rotor. When the strength of the inquiries with the magnet of the motor is generated, a force that gives a motion to the main body 31 of the motor 30 to which the stator is fixed in the direction of the rotation axis 32 (Z-axis direction in FIG. 2). It is considered that the motor 30 is vibrating in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2) as a result.

When the vibration of the motor 30 in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2) cannot be suppressed by press-fitting the motor 30 between the first restricting portion 91 and the second restricting portion 92, By strongly urging the motor 30 toward the first restricting portion 91 side, it becomes possible to suppress the vibration of the motor 30 in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2), and to significantly reduce noise. It is thought that this has become possible.

If the pressure input of the motor 30 to the first restricting portion 91 and the second restricting portion 92 is increased before the protrusion 97 is inserted between the receiving portion 95 and the wall portion 92c, the motor to the second casing 27 is increased. Press-fitting itself for attaching 30 becomes difficult, and conversely, it becomes difficult to remove it.
Therefore, it is preferable to set the pressure input of the motor 30 to the first restricting portion 91 and the second restricting portion 92 to a size that allows the motor 30 to be attached to and detached from the second housing 27.

However, when the pressure input is performed in consideration of attachment and detachment of the motor 30 to the second housing 27, vibration of the motor 30 in the direction of the rotation axis 32 (Z-axis direction in FIG. 2) may not be sufficiently reduced.

On the other hand, with the configuration of the present embodiment, the pressure input of the motor 30 to the first restricting portion 91 and the second restricting portion 92 is set to a size that allows the motor 30 to be attached to and detached from the second housing 27. Even with the setting, when the first housing 23 and the second housing 27 are combined, the biasing force of the protrusion 97 acts on the motor 30, so that the direction of the rotation axis 32 of the motor 30 (Z in FIG. 2). Vibration in the axial direction can be reliably suppressed.
Therefore, it is possible to easily achieve both good attachment and detachment of the motor 30 to and from the second housing 27 and quietness due to vibration suppression.

In the above description, the receiving portion 95 protruding toward the first casing 23 side is provided inside the second side wall portion 26 of the second casing 27, but the second side wall portion 26 itself is not provided. You may utilize it for the receiving part 95.

In addition, in the above-described embodiment, even when the first housing 23 is separated from the second housing 27, the motor 30 is configured to be press-fitted between the first restricting portion 91 and the second restricting portion 92. Although the 1st regulation part 91 and the 2nd regulation part 92 were provided, the width|variety of the protrusion 97 in the rotating shaft 32 direction (Z-axis direction of FIG. 2) can fully urge the motor 30 to the 1st regulation part 91 side. With the width, the motor 30 is sufficiently pressed to the side of the first restricting portion 91 by the protruding portion 97 regardless of whether the motor 30 is press-fitted between the first restricting portion 91 and the second restricting portion 92. become.

Therefore, the first restricting portion 91 and the second restricting portion 92 do not necessarily need to be press-fitted with the motor 30 in the state where the first housing 23 is separated from the second housing 27. The portion 91 and the second regulation portion 92 may regulate the position of the motor 30 so that the motor 30 is placed at a substantially predetermined position.
Specifically, the width of the motor 30 is the same as or smaller than the distance between the first restricting portion 91 and the second restricting portion 92 in the direction of the rotating shaft 32.

However, even when the first housing 23 is separated from the second housing 27, it is better to press the motor 30 between the first restricting portion 91 and the second restricting portion 92 when assembling the rotating device 10. Moreover, when the motor 30 is arranged in the second housing 27, the position of the motor 30 can be surely aligned, so that workability is good.

In the above-described embodiment, the receiving portion 95 and the protruding portion 97 are provided on the second regulating portion 92 side in order to press the motor 30 toward the first regulating portion 91 side, but conversely, the second regulating portion 92 is provided. The motor 30 may be pressed against the portion 92 side.

In this case, since the rotating shaft 32 is derived from the first end 31a of the motor 30, the rotating shaft 32 is located at the position of the second housing 27 where a surface in contact with the first end 31a can be formed. The receiving portion may be provided at a position avoiding 32 as in the above embodiment.
For example, the receiving portion may be provided in the second housing 27 so that the receiving portion is located at a position facing the first end portion 31a outside the first bearing portion 31aa of the first end portion 31a.

Then, in a position between the receiving portion and the first end portion 31a of the motor 30 (for example, the first end portion 31a outside the first bearing portion 31aa of the first end portion 31a) so as to contact the receiving portion. The protruding portion to be inserted may be provided on the first housing 23.

(Second embodiment)
Next, a rotating device 10 according to a second embodiment of the present invention will be described with reference to FIGS. 8 and 9.
Also in the second embodiment, the basic configuration is the same as that of the first embodiment, and therefore, in the following, mainly the portions different from the first embodiment will be described, and the portions similar to the first embodiment will be described. The description may be omitted.

FIG. 8 is a perspective view showing the housing 20 of the second embodiment.
8 is a view corresponding to FIG. 5, in which the first housing 23 and the second housing 27 are separated and various components housed in the housing 20 are omitted. 20 is a perspective view such that the inside of 20 is visible. FIG.

Further, in the following description, when pointing out a similar configuration, the drawings used in the first embodiment may be referred to.

As shown in FIG. 8, similarly to the first embodiment, the second restricting portion 92 of the second housing 27 of the second embodiment also extends from the second surface portion 25 of the second housing 27 to the first housing 23 side. The motor 30 (see FIG. 2), which is provided so as to project into the second bearing portion 31bb (see FIG. 2) of the second end 31b (see FIG. 2) of the motor 30 (see FIG. 2), is sandwiched. Of the pair of side portions 92a, 92b arranged in a direction intersecting the direction of the rotation axis 32 (Z-axis direction in FIG. 2) (direction substantially orthogonal in the illustrated example) and the end portion side of the second bearing portion 31bb. It is the same in that it is provided with a wall portion 92c that connects the pair of side portions 92a and 92b.

On the other hand, as shown in FIG. 8, in the second housing 27 of the second embodiment, the wall portion 92c of the second restricting portion 92 has the first housing 23 into which the protrusion 97 of the first housing 23 is inserted. It differs from the first embodiment in that it has a notch 92d that is open to the side.

Corresponding to this, the protrusion 97 of the second embodiment has a width in the direction of the rotation axis 32 (Z-axis direction of FIG. 2) as compared with the protrusion 97 of the first embodiment shown in FIG. Is largely designed on the side of the motor 30.

More specifically, when the first housing 23 is separated from the second housing 27 and the motor 30 is provided in the second housing 27, the receiving portion 95 is It is provided so as to be separated from the second bearing portion 31bb by a first distance (hereinafter referred to as a first separation distance) in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2).

However, since the first distance in the second embodiment is the distance from the second bearing portion 31bb, it is a little longer than the first distance in the first embodiment in terms of a quantitative distance.
However, by making the position where the receiving portion 95 is provided closer to the second bearing portion 31bb side, the first distance of the second embodiment is quantitatively the same as the first distance of the first embodiment. You may

Then, in the direction of the rotating shaft 32, the width of the portion of the protruding portion 97 provided on the first housing 23, which is inserted between the receiving portion 95 and the wall portion 92c, is larger than the first separation distance. There is.
Further, the protrusion 97 has a wedge-like shape in which the tip of the protrusion 97 is smaller than the first distance so that the protrusion 97 can be smoothly inserted between the receiving portion 95 and the second bearing portion 31bb. ..

FIG. 9 is a cross-sectional view taken along the rotary shaft 32 for explaining a state where the motor 30 is provided in the housing 20.
In FIG. 9, the internal structure of the motor 30 and the worm gear 41 and the like provided in the housing 20 are omitted.

Then, as shown in FIG. 9, in the second embodiment, the protruding portion 97 directly urges the second bearing portion 31bb toward the first restricting portion 91 (see FIG. 2).
The protruding portion 97 is press-fitted between the receiving portion 95 and the second bearing portion 31bb, and the protruding portion 97 directly presses the motor 30 strongly against the first restricting portion 91.

Even with the configuration of the second embodiment as described above, it is possible to reliably suppress the vibration of the motor 30 in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) as in the first embodiment. Noise can be suppressed.

Also in the second embodiment, the motor 30 is press-fitted between the first restricting portion 91 and the second restricting portion 92 while the first housing 23 is separated from the second housing 27. In order to achieve this, the second restricting portion 92 is provided with the wall portion 92c with which the second bearing portion 31bb comes into contact. However, when the first housing 23 is separated from the second housing 27, When the motor 30 is not press-fitted between the first regulation portion 91 and the second regulation portion 92, the wall portion 92c may be omitted and only the pair of side portions 92a and 92b may be provided.

In the present embodiment, as shown in FIGS. 2 and 5, the protrusion 97 is inserted into a position between the receiving portion 95 and the second end 31b of the motor 30, and the second end 31b of the motor 30 is inserted into the first end 31b. Although the first regulation portion 91 is biased, the invention is not limited to this.
For example, the receiving portion 95 may be deformed by inserting the protruding portion 97 into a position between the receiving portion 95 and the second end portion 31b of the motor 30.
The deformed reaction force of the second restricting portion 92 can be applied to the protruding portion 97 to suppress the vibration of the main body portion 31 itself of the motor 30.

In addition, by inserting the protruding portion 97 into a position between the receiving portion 95 and the second end portion 31b of the motor 30, friction is generated between the second end portion 31b, the protruding portion 97, and the receiving portion 95. The vibration of the main body 31 itself of the motor 30 can be attenuated to prevent the vibration from propagating to the outside.

Further, the bending rigidity of the entire projecting portion 97 and the receiving portion 95 may be improved by inserting the projecting portion 97 into a position between the receiving portion 95 and the second end 31b of the motor 30.
By improving the bending rigidity, the protrusion 97 and the receiving portion 95 as a whole are less likely to be deformed by the vibration of the main body 31 of the motor 30, and the magnitude (amplitude) of the vibration propagating to the outside can be reduced.

The following concept is described in the above-mentioned 1st Embodiment and 2nd Embodiment. It includes a first housing 23, a second housing 27, and a motor 30.
The motor 30 is arranged between the first housing 23 and the second housing 27.
A first protrusion (corresponding to the protrusion 97) that protrudes toward the second casing 27 is provided inside the first casing 23.
The second housing 27 includes a contact portion that comes into contact with one of the both surfaces of the motor 30 in the direction of the rotation axis 32.

Here, both surfaces of the motor 30 correspond to the first end portion 31a and the second end portion 31b in the first and second embodiments.
Further, one surface corresponds to the first end portion 31a or the second end portion 31b.

The first projecting portion (corresponding to the projecting portion 97) urges the other surface toward the contact portion directly or via another member.
The other member corresponds to, for example, the wall portion 92c of the second restriction portion 92 of the motor 30 in the first and second embodiments.

Although the present invention has been described above based on the embodiment, it goes without saying that the present invention is not limited to the embodiment and various modifications can be made without departing from the gist of the present invention.
Therefore, various modifications without departing from the scope of the invention are also included in the technical scope of the present invention, which is obvious to those skilled in the art from the description of the claims. ..

10... Rotating device, 20... Casing, 21... 1st surface part, 22... 1st side wall part, 22a... Recessed part, 22b... Engaging part, 22c... Engaging part, 22ca... Hole, 22d... Part, 23... 1 case, 25... 2nd surface part, 25a... Opening part, 26... 2nd side wall part, 26a... Protrusion, 26b... Part, 27... 2nd case, 30... Motor, 31... Main part, 31a... 1st End part, 31aa... 1st bearing part, 31b... 2nd end part, 31bb... 2nd bearing part, 32... Rotating shaft, 33... Motor terminal, 35... Second connection terminal, 35a... Connection part, 40... Transmission gear , 41... Worm gear, 42... First two-stage gear, 42a... Large diameter gear, 42b... Small diameter gear, 43... Second two-stage gear, 43a... Large diameter gear, 43b... Small diameter gear, 50 Output gear, 51... Engaging portion, 60... Gear, 70... Sensor, 71... First connection terminal, 72... Resistor substrate, 73... Base portion, 74... Cover portion, 80... Flexible wiring board, 81... Hole , 82... Hole, 83... Bent portion, 91... First restricting portion, 91a, 91b... Projecting portion, 91c... Surface, 92... Second restricting portion, 92a, 92b... Side portion, 92c... Wall portion, 92ca... Line projections, 92d... Notches, 93... Supports, 95... Receiving parts, 97... Projections, A, B, C, D... Mounting parts, X... Region

The present invention relates to a rotating device.

For example, Patent Document 1 discloses a motor actuator (rotating device) that drives a plurality of doors (louvers) provided in the middle of an air passage in the vehicle air conditioning system.

Japanese Patent Laid-Open No. 2015-220969

By the way, in recent years, the quietness of the environment inside the vehicle has tended to increase, but in the case of a vehicle driven by a motor such as an electric vehicle, the noise generated by the internal combustion engine is not emitted, and thus the quietness in the vehicle is significantly increased.

With such a high level of quietness, even in a vehicle equipped with an internal combustion engine, even a sound that is not noticeable becomes noticeable in the vehicle, and therefore, in various parts, It is believed that even higher noise levels will be required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotating device with improved quietness.

The present invention is grasped by the following configurations in order to achieve the above object.
(1) A rotating device of the present invention includes a motor having a rotating shaft, a plurality of gears including an output gear that outputs the rotation of the rotating shaft to the outside, and a housing that houses the motor and the gear. The housing is separable into a first housing and a second housing, and the motor is located on the opposite side of the first end from which the rotation shaft is derived and the first end. A second end portion, the second housing includes a first restriction portion that restricts a position of the motor on the first end portion side, and the first housing is disposed on the second housing side. The projection includes a projection that projects toward the first restriction portion side, either directly or through another member.

(2) In the configuration of (1) above, the second housing includes a second restricting portion that restricts a position of the motor on the second end side, and a receiving portion that receives the protruding portion. The portion is provided apart from the second end portion of the motor in the rotation axis direction away from the motor, and the protruding portion is press-fitted between the receiving portion and the second restricting portion.

(3) In the configuration of (2) above, the second end portion of the motor has a second bearing portion, and the second restricting portion is a wall facing the second bearing portion in the rotation axis direction. A portion, the receiving portion includes a surface portion that faces the wall portion, and the protrusion is press-fitted between the surface portion and the wall portion.

(4) In the configuration of (3) above, the second restricting portion includes a pair of side portions connected by the wall portion, and the second bearing portion is disposed between the pair of side portions. ing.

(5) In the above configuration (3) or (4), the receiving portion is provided apart from the wall portion by a first distance in the rotation axis direction, and is provided between the receiving portion and the wall portion. A width of a part of the protruding portion to be inserted is larger than the first distance.

(6) In the configuration of (1) above, the second end portion of the motor has a second bearing portion, the second housing includes a receiving portion that receives the protruding portion, and the receiving portion is Is provided so as to be separated from the second bearing portion by a first distance in the rotation axis direction, and the protrusion is press-fitted between the second bearing portion and the receiving portion.

(7) In the configuration of (6) above, the protrusion directly urges the second bearing portion toward the first regulating portion.

(8) In the configuration of (6) or (7), the second casing includes a second restricting portion that restricts a position of the motor on the second end side, and the second restricting portion includes: A wall portion that faces the second bearing portion in the rotation axis direction is provided, and the wall portion has a cutout portion that is open to the first housing side, and the projecting portion is inserted into the cutout portion. ..

(9) In the configuration according to any one of (6) to (8), the width of a part of the protruding portion inserted between the receiving portion and the second bearing portion is larger than the first distance.

(10) In the configuration of (5) or (9), the tip of the protrusion has a wedge shape that is smaller than the first distance.

(11) The rotating device of the present invention includes a motor having a rotating shaft, a plurality of gears including an output gear that outputs the rotation of the rotating shaft to the outside, and a housing that houses the motor and the gear. The housing is separable into a first housing and a second housing, and the motor is located on the opposite side of the first end from which the rotation shaft is derived and the first end. A second end portion, the second housing includes a second restriction portion that restricts a position of the motor on the second end portion side, and the first housing faces the second housing side. A protrusion that protrudes, and the protrusion urges the first end of the motor toward the second restriction portion directly or through another member.

(12) In the configuration of (11) above, the second housing includes a receiving portion that is provided apart from the first end portion of the motor in the rotation axis direction away from the motor. The protruding portion is press-fitted between the portion and the second restricting portion.

(13) In the configuration according to any one of (2) to (5) and (8), the first casing is separated from the second casing in the first regulating portion and the second regulating portion. In such a state, the motor is provided so as to be press-fitted between the first restricting portion and the second restricting portion.

(14) The rotating device of the present invention includes a first housing, a second housing, and a motor, and the motor is arranged between the first housing and the second housing. , A protrusion that protrudes toward the second casing is provided inside the first casing, and the second casing contacts one surface of both surfaces of the motor in the rotation axis direction. The contact portion is provided, and the protrusion urges the other surface of both surfaces of the motor toward the contact portion directly or via another member.

(15) In the configuration of (14) above, a plurality of gears are provided between the first housing and the second housing, and the motor has a rotating shaft that contacts the gears.

According to the present invention, it is possible to provide a rotating device with improved quietness.

It is a perspective view of a rotation device of a 1st embodiment concerning the present invention. FIG. 3 is a perspective view in which the first housing and the second housing of the first embodiment according to the present invention are separated so that the inside of the housing can be seen. It is an exploded perspective view of the rotation device of a 1st embodiment concerning the present invention. It is the perspective view which made the 2nd surface side of the 2nd housing of the rotation device of a 1st embodiment concerning the present invention visible. FIG. 3 is a perspective view in which the first housing and the second housing of the first embodiment according to the present invention are separated, various components housed in the housing are omitted, and the inside of the housing is visible. It is sectional drawing which cut|disconnected the rotating device of 1st Embodiment which concerns on this invention along the rotating shaft. It is a perspective view showing the 2nd case of a 1st embodiment concerning the present invention. It is a perspective view which shows the housing|casing of 2nd Embodiment which concerns on this invention. It is sectional drawing cut|disconnected along the rotating shaft for demonstrating the state in which the motor is provided in the housing|casing of 2nd Embodiment which concerns on this invention.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.
The same elements are denoted by the same numbers throughout the description of the embodiments.

(First embodiment)
FIG. 1 is a perspective view of a rotating device 10 according to a first embodiment of the invention.
As shown in FIG. 1, the rotating device 10 includes a housing 20 configured by combining a first housing 23 and a second housing 27.
The first housing 23 and the second housing 27 are made of a resin material such as polypropylene, polyethylene terephthalate, ABS or the like.

The first housing 23 has a first surface portion 21 as a surface portion and a first side wall portion 22 provided on an outer peripheral portion of the first surface portion 21, and the rotary device 10 is air-conditioned at four corners of the first housing 23. Mounting portions A, B, C, D for mounting on an air conditioner or the like that constitutes the system are integrally formed on the outer periphery of the first side wall portion 22.
The first side wall portion 22 becomes a part of the tubular portion of the housing 20.
The planar shape (outer shape) of the cylindrical portion of the housing 20 is a polygon having a plurality of corners in the illustrated example.

The second housing 27 also has a second surface portion 25 as a surface portion and a second side wall portion 26 provided on the outer peripheral portion of the second surface portion 25.
The second side wall portion 26 becomes a part of the tubular portion of the housing 20.
That is, the first side wall portion 22 and the second side wall portion 26 form a tubular portion of the housing 20.

FIG. 2 is a perspective view in which the first housing 23 and the second housing 27 are separated so that the inside of the housing 20 can be seen, and FIG. 3 is an exploded perspective view of the rotating device 10.
As shown in FIG. 2, in the first housing 23, a plurality of engaging portions 22 b provided on the outer periphery of the first side wall portion 22 and extending toward the second housing 27 are formed integrally with the first side wall portion 22. A recess 22a is provided on the inner surface of the engaging portion 22b.
Here, the inner surface refers to a surface facing the inside of the first housing 23.

An accommodating portion for accommodating the external connector is provided in the tubular portion of the housing 20.
This accommodating portion forms a connector of the rotating device 10 described later.
The accommodating portion includes a portion 22d of the first side wall portion 22 of the first housing 23 facing each other, a portion 21a of the first surface portion 21 straddling the portion 22d, and a second side wall portion 26 of the second housing 27 facing each other. And a portion 25b of the second surface portion 25 of the second housing 27 that straddles between the portions 26b.

A portion 22d of the first side wall portion 22 and a portion 26b of the second side wall portion 26 are outside the other portion of the first side wall portion 22 and the other portion of the second side wall portion 26 that form the tubular portion of the housing 20. It has a shape protruding toward.

In addition, regarding the region X that constitutes the accommodating portion that accommodates the external connector, similarly, the engaging portions 22 c that extend toward the pair of second housings 27 on the first side wall portion 22 are integrated with the first side wall portion 22. The engaging portion 22c is provided with a hole 22ca.

On the other hand, in the second housing 27, the recess 22a of the engaging portion 22b is provided on the outer peripheral surface of the second side wall portion 26 corresponding to each of the plurality of engaging portions 22b and the pair of engaging portions 22c of the first housing 23. A plurality of protrusions 26a that are engaged with the holes 22ca of the engaging portion 22c are formed integrally with the second side wall portion 26.
The protrusion 26a serves as an engaged portion that engages with the engaging portion 22b and the pair of engaging portions 22c.

Then, the first housing 23 and the second housing 27 are arranged so that the projections 26a of the second housing 27 are engaged with the recesses 22a of the engaging portion 22b of the first housing 23 and the holes 22ca of the engaging portion 22c. By combining them, the first housing 23 and the second housing 27 are integrated to form a housing 20 (see FIG. 1) that houses various components shown in FIG.
Note that the second housing 27 may be provided with an engaging portion having a recess or a hole, and the first housing 23 may be provided with a protrusion that engages with the recess or the hole.

As shown in FIG. 2, the rotating device 10 mechanically outputs the rotation of the motor 30 and the rotation shaft 32 of the motor 30 to the outside as various components housed in the housing 20 (see FIG. 1). A plurality of gears 60 including the output gear 50, a sensor 70 that detects a rotation angle of the output gear 50, and a flexible wiring that electrically connects the motor terminal 33 of the motor 30 and the second connection terminal 35 for external connection. A substrate 80 (see FIG. 3).

That is, inside the first housing 23 and the second housing 27 (between the first housing 23 and the second housing 27), the motor 30, the plurality of gears 60, the sensor 70, and the flexible wiring board. 80 and are arranged.

Further, as shown in FIG. 3, the second housing 27 is provided with an opening 25a corresponding to the center of the output gear 50.

FIG. 4 is a perspective view in which the second surface 27 side of the second housing 27 of the rotating device 10 is visible.
As shown in FIG. 4, the engaging portion 51 of the output gear 50 can be accessed from the outside through an opening 25a provided in the second surface portion 25 of the second housing 27. The drive shaft of the louver of the air conditioning system provided in the vehicle is engageable with the engaging portion 51 of the output gear 50.

Therefore, by rotating the output gear 50, for example, an air conditioner of an air conditioning system provided in an automobile or the like and a louver provided on an air flow path are controlled to control the flow rate of air in the air conditioning system to a predetermined flow rate. You can

(motor)
The motor 30 is a drive device for rotating the output gear 50, and a DC motor is used in this embodiment.
As shown in FIGS. 2 and 3, the motor 30 includes a main body 31 having a rectangular columnar outer shape with curved corners, a first end 31a of the main body 31 from which the rotary shaft 32 is drawn, and a main body. A second end 31b located on the opposite side of the first end 31a of 31 and a pair of motor terminals 33 provided on the second end 31b so as to protrude outward are provided.

Further, the first end portion 31a is provided so as to project in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2), accommodates a bearing that rotatably supports the rotation shaft 32, and the rotation shaft 32 is led out from the center. The first bearing portion 31aa is provided.
The first bearing portion 31aa rotatably supports the rotating shaft 32.

Similarly, the second end portion 31b is also provided so as to project in the direction of the rotation shaft 32, and has a second bearing portion 31bb that accommodates a bearing that rotatably supports the rotation shaft 32.
The second bearing portion 31bb rotatably supports the rotating shaft 32.
The motor 30 includes a stator and a rotor inside a main body 31, and the rotary shaft 32 is fixed to the rotor.

(Transmission gear)
As shown in FIGS. 2 and 3, the plurality of gears 60 include a transmission gear 40. The transmission gear 40 causes the rotation of the rotation shaft 32 of the motor 30 to the output gear 50 at a predetermined gear ratio. It is a gear for transmitting.
In this embodiment, three gears (a worm gear 41, a first two-stage gear 42, and a second two-stage gear 43) are used as the transmission gear 40.

Specifically, as shown in FIG. 2, the transmission gear 40 includes a worm gear 41 fixed to the rotation shaft 32 of the motor 30, and a large diameter gear 42a and a small diameter gear 42b connected to the worm gear 41. A first two-stage gear 42, a large-diameter gear 43a connected to the small-diameter gear 42b of the first two-stage gear 42, and a small-diameter gear 43b (see FIG. 3) connected to the output gear 50; 2 two-stage gear 43, and.

In the present embodiment, the first two-stage gear 42 and the second two-stage gear 42 are arranged so that the rotation of the rotating shaft 32 of the motor 30 is transmitted to the output gear 50 while adjusting the gear ratio using a small space. Although 43 is used, it is not limited to this.
For example, the second two-stage gear 43 may be omitted and the output gear 50 may be connected to the gear 42b having a smaller diameter than the first two-stage gear 42. The first two-stage gear 42 and the second two-stage gear 43 may be connected to each other. Alternatively, the output gear 50 may be directly connected to the worm gear 41.

(Output gear)
As described above, the output gear 50 is a gear to which the drive shaft of the louver (not shown) of the air conditioning system is connected and which outputs the rotation of the rotary shaft 32 of the motor 30 as a drive force for controlling the drive shaft of the louver.

The output gear 50 is not limited to the one in which the drive shaft of the louver is directly connected, but a gear interposed between the rotating device 10 and the drive shaft of the louver (not shown) may be provided. The rotating shaft of the intervening gear is connected to the output gear 50.

(sensor)
The louver is controlled to be in a predetermined state based on the relationship between the rotation of the output gear 50 and the driving state of the louver.

In order to control the louver, it is necessary to detect the rotation state (rotation angle) of the output gear 50, and the sensor 70 is a sensor that detects the rotation angle of the output gear 50. More specifically, It is a sensor that outputs an output signal according to the rotation angle.

Then, by controlling the rotation of the motor 30 based on the detected rotation angle of the output gear 50, the rotation control of the output gear 50 is performed so that the louver (not shown) is brought into a predetermined state.

In the present embodiment, a rotary resistance position sensor is used as the sensor 70.
Specifically, as shown in FIGS. 2 and 3, the sensor 70 includes three first connection terminals 71 for input and output for obtaining a rotation angle signal according to the rotation angle of the output gear 50, and a first connection terminal 71. A resistor substrate 72, in which a resistor to which the connection terminal 71 is electrically connected, is printed on a resin substrate, is provided.

Further, the sensor 70 has a conductive brush (not shown) that comes into contact with the resistor of the resistor substrate 72, and a rotor (not shown) that rotates integrally with the output gear 50 that detects the rotation angle, and arranges them. And a cover portion 74 that is provided at a position corresponding to a rotating body (not shown) and that forms a housing (may be referred to as a sensor housing) of the sensor 70 with the base portion 73. I have it.

As the resin substrate used for the resistor substrate 72, for example, an epoxy resin substrate having a thickness of about 300 μm to 1600 μm can be used and is harder than a flexible wiring substrate 80 described later.

Here, a specific operation of the sensor 70 will be briefly described.
A rotating body (not shown) engaged with the rotating shaft of the output gear 50 is rotatably provided on the base portion 73.
The position of the conductive brush (not shown) provided on the resistor substrate 72 side of the rotating body is changed with the rotation of the rotating body, with respect to the resistor substrate 72 that is spaced apart from the rotating body. It has become.
The conductive brush is in contact with the resistor of the resistor substrate 72.

When the position of the conductive brush in contact with the resistor of the resistor substrate 72 changes, the output voltage also changes as the resistance value between the input and output terminals changes, and the rotation angle is changed based on the change of the output voltage. Can be asked.

The calculation for obtaining the rotation angle based on the output voltage may be performed inside the sensor 70 by mounting an integrated circuit or the like on the sensor 70. Conversely, the calculation may be performed by a control device provided outside. However, in the present embodiment, an external control device is used to perform the calculation for obtaining the rotation angle.

However, the sensor 70 does not have to be limited to a rotary resistance position sensor, and for example, a sensor substrate on which a conductive portion is formed so that ON/OFF is repeated by a conductive brush as the rotating body rotates. It may be a sensor of the type that outputs this ON-OFF by using.
Even if such ON-OFF is output, the rotation angle of the rotating body can be obtained based on the number of times of ON-OFF.

On the other hand, the base portion 73 is provided with three input/output first connection terminals 71 forming the connector of the rotating device 10 and two second connection terminals 35 for the motor 30.
Specifically, as shown in FIG. 2, the output gear 50 and the sensor 70 are disposed on the side of the main body 31 of the motor 30, that is, in the direction substantially orthogonal to the rotation axis 32 direction (Z-axis direction) of the motor 30. It is arranged along the second surface portion 25 of the second housing 27 (on the side of the second side wall portion 26 of the second housing 27 far from the motor 30 in the X-axis direction).

Then, the base portion 73 of the sensor 70 includes a terminal arrangement portion in which terminals are arranged so that the second connection terminals 35 for the motor 30 can be arranged.
The terminal arrangement portion is formed so as to project from the sensor 70 to the motor 30 side.

In this terminal placement portion, the first connection terminal 71 is placed on the side distant from the motor 30 in the direction substantially orthogonal to the rotation axis 32 direction (Z-axis direction) of the motor 30, and on the side close to the motor 30. The second connection terminal 35 is arranged, and by using the terminal arrangement portion, the motor terminal 33 of the motor 30 and the second connection terminal 35 for the motor 30 are electrically connected in a short distance. You can do it.

In this way, not only the three first connection terminals 71 for input and output of the sensor 70 are fixed to the base portion 73 of the sensor 70, but also the two second connection terminals 35 for the motor 30 can be fixed. This eliminates the need to provide a fine structure for fixing the two second connection terminals 35 for the motor 30 to the housing 20 (see FIG. 1), and makes the mold for forming the housing 20 complicated. Is suppressed, and the manufacturing cost of the housing 20 can be reduced.

Instead, it is necessary to make the terminal arrangement portion of the base portion 73 of the sensor 70 capable of arranging the two second connection terminals 35 for the motor 30, but the base portion 73 can be seen in FIGS. 2 and 3. As can be seen, even if the two second connection terminals 35 are arranged, the shape is extremely simple, and the mold etc. does not become complicated, so the manufacturing cost does not increase and the entire product is The manufacturing cost can be suppressed from the viewpoint of the total cost.

In the present embodiment, as shown in FIGS. 2 and 3, a protrusion corresponding to each terminal (the first connection terminal 71 and the second connection terminal 35) is formed on the base portion 73 of the sensor 70, and each terminal (first The protrusion is press-fitted into the holes provided in the connection terminal 71 and the second connection terminal 35).

With such a configuration, each terminal (first connection terminal 71 and second connection terminal 35) is fixed on the base portion 73.
However, the method of fixing each terminal (the first connection terminal 71 and the second connection terminal 35) to the base portion 73 does not need to be particularly limited, and may be a method of fixing using an adhesive or the like. ..

By disposing the second connection terminal 35 on the base portion 73, it is possible to prevent the second connection terminal 35 from coming into contact with the components housed in the housing 20 (see FIG. 1), and reliability is improved. Can be improved.

Further, by arranging the three first connection terminals 71 for input and output of the sensor 70 and the two second connection terminals 35 for the motor 30 so as to be integrated in the base portion 73 in this way, the storage of the terminals becomes complicated. Since it can be suppressed, the rotating device 10 can be downsized as a whole.

The two second connection terminals 35 for the motor 30, which are arranged in the terminal arrangement portion of the base portion 73 and fixed in this way, are connected to the respective motor terminals of the motor 30 by the flexible wiring board 80 shown in FIG. Electrically connected to 33.

(Flexible wiring board)
The flexible wiring board 80 is formed of, for example, an insulating resin material such as polyimide or polyester, and has a thickness of 12 μm to 50 μm, an adhesive layer formed on the film, and an adhesive layer on the film. It has a printed or laminated conductor.
The adhesive layer is formed of, for example, an epoxy resin material or an acrylic resin material.
The conductor is formed of a metal member such as a copper foil having a thickness of about 12 μm to 50 μm.

The flexible wiring board 80 is a flexible board that can be restored to its original shape even if it is bent at an angle of 90 degrees or more, and the connection between the second connection terminal 35 for the motor 30 and the motor terminal 33 is made. Easy to work with.

As an example of a specific connecting operation, the second connecting terminal 35 has a connecting portion 35a in which a base end portion opposite to the tip end portion is bent, as shown in FIG. The second connection terminal 35 and the flexible wiring board 80 are connected by soldering after engaging the holes 81 of the board 80.

Further, in FIG. 3, the motor 30 is arranged in the second housing 27. However, with respect to the motor 30 before such arrangement, the motor terminal 33 of the motor 30 is continuously connected to the hole of the flexible wiring board 80. The motor terminals 33 of the motor 30 and the second connection terminals 35 are connected by the flexible wiring board 80 by connecting the motor terminals 33 and the flexible wiring board 80 by soldering after engaging 82. The work is finished.

By the way, in the present embodiment, a portion where the hole 81 is provided and a portion where the hole 82 is provided are provided in the middle of the flexible wiring board 80 from the portion where the hole 81 is provided to the portion where the hole 82 is provided. A bent portion 83 having a folded structure is provided so as to have a substantially orthogonal positional relationship.

By providing such a bent portion 83, even if the rotating device 10 vibrates or the like, the bent portion 83 absorbs the vibration, so that the flexible wiring board 80 is unlikely to be damaged or the like, and the long-term operation is prevented. The reliability can be improved.

The electric connection between the second connection terminal 35 for the motor 30 and the motor terminal 33 may be a connection using a lead wire.
However, when the lead wire is used, the lead wire itself is thin and difficult to handle. Therefore, the flexible wiring board 80 is preferable as in the present embodiment because it is easy to handle.

Therefore, by electrically connecting the second connection terminal 35 for the motor 30 and the motor terminal 33 with the flexible wiring board 80, the assembly work of the rotating device 10 can be facilitated. Therefore, the manufacturing cost can be reduced.

(Improved quietness)
As a result of intensive studies on the rotating device 10 having the above-described basic configuration, noise can be reduced by about 1.5 dB by devising a mode of fixing the motor 30 to the housing 20 (see FIG. 1), and noise reduction can be achieved. I found that I can improve.
In the present embodiment, a fixed aspect that can increase the discovered quietness is adopted, and it will be specifically described below.

FIG. 5 is a perspective view in which the first housing 23 and the second housing 27 are separated, various components housed in the housing 20 are omitted, and the inside of the housing 20 is visible.
As shown in FIGS. 2 and 5, the second housing 27 includes a first restricting portion 91 that restricts the position of a part of the motor 30 on the first end 31a side and a second restricting portion 91 on the second end 31b side of the motor 30. And a second restricting portion 92 that restricts the position of a part.

Therefore, the first restricting portion 91 prevents a part of the motor 30 on the first end portion 31a side from being displaced toward the second side wall portion 26 of the second housing in the rotation axis direction.
Similarly, the second restricting portion 92 prevents a part of the motor 30 on the second end 31b side from being displaced toward the second side wall portion 26 of the second housing in the rotation axis direction.

As shown in FIG. 2, the first restricting portion 91 is provided with a pair of protruding portions 91 a and 91 b so as to protrude from the second surface portion 25 of the second housing 27 toward the first housing 23.
The pair of protrusions 91a and 91b are arranged side by side in a direction intersecting with the rotation axis direction (direction orthogonal to the rotation axis direction in the illustrated example).
The first bearing portion 31aa included in the first end portion 31a of the motor 30 is arranged between the pair of protrusions 91a and 91b.
The first bearing portion 31aa may be sandwiched by the pair of protruding portions 91a and 91b.

A support portion 93 (see FIG. 5) for receiving the first bearing portion 31aa of the motor 30 on the side of the second housing 27 is provided between the pair of protruding portions 91a and 91b. May be connected to the pair of protrusions 91a and 91b.

The pair of protrusions 91a and 91b have a surface 91c (see FIG. 5) facing the motor 30.
The surface 91c contacts the first end 31a of the motor 30.
Specifically, the first end portion 31a has a surface facing the surface 91c at a portion located outside the first bearing portion 31aa, and the surface facing the surface 91c and the surface 91c are in contact with each other. ..
In this way, the position of a part of the motor 30 on the first end 31a side is regulated by the contact between the surface 91c and the first end 31a.

As shown in FIG. 5, the second restricting portion 92 has a U shape when viewed from the first housing 23 side in a plan view.
This 2nd control part 92 has a recessed part which accommodates the 2nd bearing part 31bb (refer FIG. 2) recessed in the side away from the motor 30 (refer FIG. 2).

Specifically, as shown in FIG. 2, the second restricting portion 92 is provided so as to project from the second surface portion 25 of the second housing 27 toward the first housing 23 side.
The second restricting portion 92 includes a pair of side portions 92a and 92b, and a wall portion 92c that connects the pair of side portions 92a and 92b.
The pair of side portions 92a and 92b are arranged side by side in a direction intersecting with the rotation axis 32 direction (Z-axis direction) of the motor 30 (in the illustrated example, a direction substantially orthogonal to the rotation axis 32 direction).

A second bearing portion 31bb included in the second end portion 31b of the motor 30 is provided between the pair of side portions 92a and 92b.
In the illustrated example, the second bearing portion 31bb is sandwiched between the pair of side portions 92a and 92b.

The wall portion 92c is provided on the end side of the second bearing portion 31bb and connects the pair of side portions 92a and 92b.
The wall 92c and the end of the second bearing 31bb face each other, and the end of the second bearing 31bb faces the wall 92c and the second side wall 26 of the second housing 27.

Then, as shown in FIG. 2, when the first housing 23 is separated from the second housing 27 and the motor 30 is arranged, the first end portion 31a of the motor 30 and the first end portion 31a The surface 91c (see FIG. 5) of the restriction portion 91 on the motor 30 side contacts.
Specifically, the first end portion 31a has a surface facing the surface 91c at a portion located outside the first bearing portion 31aa, and the surface facing the surface 91c and the surface 91c are in contact with each other. ..

In addition, as shown in FIG. 2, when the first housing 23 is separated from the second housing 27 and the motor 30 is arranged, the second end portion 31b of the motor 30 has a second end portion 31b. The bearing portion 31bb comes into contact with the wall portion 92c provided on the end portion side of the second bearing portion 31bb of the second restricting portion 92.

Therefore, when the first housing 23 is separated from the second housing 27 and the motor 30 is arranged as shown in FIG. It is press-fitted between the second restriction portions 92.
As described above, the second casing 27 is provided with the first restricting portion 91 and the second restricting portion 92.

As shown in FIG. 5, the wall portion 92c of the second restricting portion 92 has a surface on the motor 30 side, and a linear protrusion 92ca is formed on the surface on the motor 30 side.
The protrusion 92ca ensures that the motor 30 is press-fitted.

As described above, since the motor 30 is press-fitted and fixed between the first restricting portion 91 and the second restricting portion 92, the main body of the motor 30 may vibrate inside the motor 30. It was thought that the vibration of the part 31 itself was suppressed.

However, as a result of further pressing the parts of the main body 31 of the motor 30 and investigating the noise after the pressing, when the wall 92c of the second restricting portion 92 is strongly pressed toward the first restricting portion 91, It was discovered that the noise was significantly reduced.

Therefore, in this embodiment, the configuration shown in FIGS. 2 and 5 is adopted.
Specifically, the second housing 27 is separated from the second bearing portion 31bb of the second end 31b of the motor 30 by a predetermined distance in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) (the motor 30. A receiving portion 95 (see FIG. 5 and FIG. 7) provided at a position spaced apart from the wall portion 92c of the second restricting portion 92 by a predetermined distance in a direction away from.

On the other hand, the first housing 23 includes a protruding portion 97, and the protruding portion 97 protrudes toward the second housing 27 side, and is located between the receiving portion 95 and the second end portion 31b of the motor 30 (the receiving portion 95 and the receiving portion 95). It is inserted in a position between the wall portions 92c of the second restriction portion 92).

The protruding portion 97 is inserted between the receiving portion 95 and the second end portion 31b of the motor 30 to give an urging force that urges the second end portion 31b of the motor 30 toward the first restricting portion 91. ..
That is, the protruding portion 97 of the first housing 23 biases the second end 31b of the motor 30 toward the first restricting portion via the wall portion 92c as another member.

FIG. 7 is a perspective view showing the second housing 27 such that the inside of the second housing 27 is viewed.
In the present embodiment, the receiving portion 95 forms a space that accommodates a part of the protruding portion 97.
Specifically, as shown in FIG. 7, the receiving portion 95 includes a surface portion 95a facing the wall portion 92c, and a pair of side portions 95b connecting the surface portion 95a and the wall portion 92c.
In addition, the receiving part 95 should just have at least the surface part 95a which opposes the wall part 92c, and the pair of side part 95b which connects the surface part 95a and the wall part 92c is not an essential requirement.

FIG. 5 shows a state in which the first housing 23 is separated from the second housing 27 and the motor 30 is not arranged.
As shown in FIG. 5, when the first housing 23 is separated from the second housing 27 and the motor 30 is not arranged, the receiving portion 95 moves in the rotation axis 32 direction (Z in FIG. 2). It is provided so as to be separated from the wall portion 92c by a first distance (hereinafter, referred to as a first separation distance) in the axial direction).

In the direction of the rotation axis 32 (Z-axis direction in FIG. 2 ), the width of the portion of the protrusion 97 provided on the first housing 23 that is inserted between the receiving portion 95 and the wall portion 92 c is smaller than the first separation distance. Is also a large width.

In the present embodiment, the tip of the protrusion 97 has a wedge-like shape that is smaller than the first distance so that the protrusion 97 can be smoothly inserted between the receiving portion 95 and the wall 92c. ing.

Here, the tip of the protrusion 97 is the end of the protrusion 97 on the second housing 27 side.
Further, as shown in FIG. 5, the width of the tip portion in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) is smaller than the first separation distance.

FIG. 6 is a cross-sectional view of the rotating device 10 taken along the rotating shaft 32.
In addition, in FIG. 6, illustration of the internal structure of the motor 30 is omitted.
By forming the tip end of the protrusion 97 into a wedge shape, the tip end of the protrusion 97 is smooth between the receiving portion 95 and the wall portion 92c when the first casing 23 and the second casing 27 are fitted together. Get in.
In the direction of the rotation axis 32, the width of the tip of the protrusion 97 is smaller than the width of the gap between the receiving portion 95 and the wall 92c.
On the other hand, the width of the middle portion and the width of the end portion of the protruding portion 97 are larger than the width of the gap between the receiving portion 95 and the wall portion 92c.

That is, the width of the protrusion 97 increases from the front end to the end of the protrusion 97.
The middle part of the protrusion 97 is between the tip and the end, and the end of the protrusion 97 is the end of the protrusion 97 on the opposite side of the tip.

Then, as the first housing 23 and the second housing 27 are put together, the middle portion of the projecting portion 97 having a width larger than the first separation distance between the receiving portion 95 and the wall portion 92c becomes the receiving portion 95. It is press-fitted between the wall portions 92c.

After that, when the first casing 23 and the second casing 27 are completely put together to be in the state of the casing 20, as shown in FIG. 6, the protruding portion 97 has the second bearing portion via the wall portion 92c. The state in which 31bb is strongly biased toward the first restricting portion 91 (see FIGS. 2 and 5) is in a state in which noise can be significantly reduced.

The reason why the noise can be significantly reduced by such a configuration is that the vibration of the main body 31 of the motor 30 in the direction of the rotation axis 32 (Z-axis direction in FIG. 2) generated by the torque ripple of the motor 30 is suppressed. It is thought to be.

In other words, the motor 30 is configured such that the rotor can rotate with respect to the stator by rotatably supporting the rotating shaft 32 fixed to the rotor with the bearings. Therefore, the rotary shaft 32 itself is allowed to be somewhat loose in the axial direction.

In order to prevent the rotation shaft 32 from moving in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) due to the play of the rotation shaft 32, the center of the stator and the center of the magnet of the rotor are set to the rotation shaft 32. Direction (Z-axis direction in FIG. 2) and pulling the rotary shaft 32 toward one side of the rotary shaft 32 direction (Z-axis direction in FIG. 2) causes the rotary shaft 32 to rotate in the rotary shaft 32 direction (Z-axis direction in FIG. 2). Direction) is suppressed.

However, in order to rotate the rotor, it is necessary to switch the current between a plurality of coils provided in the stator, and at the time of switching the current, between the stator and the magnet of the rotor as described above. Since the strength of the pulling motion occurs, the rotary shaft 32 can move in the direction of the rotary shaft 32 (Z-axis direction in FIG. 2).

Here, when the motor 30 is arranged in the rotating device 10, since the rotating shaft 32 is connected to the first two-stage gear 42 via the worm gear 41, the rotating shaft 32 also becomes a fixed end, and the stator and the rotor. When the strength of the inquiries with the magnet of the motor is generated, a force that gives a motion to the main body 31 of the motor 30 to which the stator is fixed in the direction of the rotation axis 32 (Z-axis direction in FIG. 2). It is considered that the motor 30 is vibrating in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2) as a result.

When the vibration of the motor 30 in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2) cannot be suppressed by press-fitting the motor 30 between the first restricting portion 91 and the second restricting portion 92, By strongly urging the motor 30 toward the first restricting portion 91 side, it becomes possible to suppress the vibration of the motor 30 in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2), and to significantly reduce noise. It is thought that this has become possible.

If the pressure input of the motor 30 to the first restricting portion 91 and the second restricting portion 92 is increased before the protrusion 97 is inserted between the receiving portion 95 and the wall portion 92c, the motor to the second casing 27 is increased. Press-fitting itself for attaching 30 becomes difficult, and conversely, it becomes difficult to remove it.
Therefore, it is preferable to set the pressure input of the motor 30 to the first restricting portion 91 and the second restricting portion 92 to a size that allows the motor 30 to be attached to and detached from the second housing 27.

However, when the pressure input is performed in consideration of attachment and detachment of the motor 30 to the second housing 27, vibration of the motor 30 in the direction of the rotation axis 32 (Z-axis direction in FIG. 2) may not be sufficiently reduced.

On the other hand, with the configuration of the present embodiment, the pressure input of the motor 30 to the first restricting portion 91 and the second restricting portion 92 is set to a size that allows the motor 30 to be attached to and detached from the second housing 27. Even with the setting, when the first housing 23 and the second housing 27 are combined, the biasing force of the protrusion 97 acts on the motor 30, so that the direction of the rotation axis 32 of the motor 30 (Z in FIG. 2). Vibration in the axial direction can be reliably suppressed.
Therefore, it is possible to easily achieve both good attachment and detachment of the motor 30 to and from the second housing 27 and quietness due to vibration suppression.

In the above description, the receiving portion 95 protruding toward the first casing 23 side is provided inside the second side wall portion 26 of the second casing 27, but the second side wall portion 26 itself is not provided. You may utilize it for the receiving part 95.

In addition, in the above-described embodiment, even when the first housing 23 is separated from the second housing 27, the motor 30 is configured to be press-fitted between the first restricting portion 91 and the second restricting portion 92. Although the 1st regulation part 91 and the 2nd regulation part 92 were provided, the width|variety of the protrusion 97 in the rotating shaft 32 direction (Z-axis direction of FIG. 2) can fully urge the motor 30 to the 1st regulation part 91 side. With the width, the motor 30 is sufficiently pressed to the side of the first restricting portion 91 by the protruding portion 97 regardless of whether the motor 30 is press-fitted between the first restricting portion 91 and the second restricting portion 92. become.

Therefore, the first restricting portion 91 and the second restricting portion 92 do not necessarily need to be press-fitted with the motor 30 in the state where the first housing 23 is separated from the second housing 27. The portion 91 and the second regulation portion 92 may regulate the position of the motor 30 so that the motor 30 is placed at a substantially predetermined position.
Specifically, the width of the motor 30 is the same as or smaller than the distance between the first restricting portion 91 and the second restricting portion 92 in the direction of the rotating shaft 32.

However, even when the first housing 23 is separated from the second housing 27, it is better to press the motor 30 between the first restricting portion 91 and the second restricting portion 92 when assembling the rotating device 10. Moreover, when the motor 30 is arranged in the second housing 27, the position of the motor 30 can be surely aligned, so that workability is good.

In the above-described embodiment, the receiving portion 95 and the protruding portion 97 are provided on the second regulating portion 92 side in order to press the motor 30 toward the first regulating portion 91 side, but conversely, the second regulating portion 92 is provided. The motor 30 may be pressed against the portion 92 side.

In this case, since the rotating shaft 32 is derived from the first end 31a of the motor 30, the rotating shaft 32 is located at the position of the second housing 27 where a surface in contact with the first end 31a can be formed. The receiving portion may be provided at a position avoiding 32 as in the above embodiment.
For example, the receiving portion may be provided in the second housing 27 so that the receiving portion is located at a position facing the first end portion 31a outside the first bearing portion 31aa of the first end portion 31a.

Then, in a position between the receiving portion and the first end portion 31a of the motor 30 (for example, the first end portion 31a outside the first bearing portion 31aa of the first end portion 31a) so as to contact the receiving portion. The protruding portion to be inserted may be provided on the first housing 23.

(Second embodiment)
Next, a rotating device 10 according to a second embodiment of the present invention will be described with reference to FIGS. 8 and 9.
Also in the second embodiment, the basic configuration is the same as that of the first embodiment, and therefore, in the following, mainly the portions different from the first embodiment will be described, and the portions similar to the first embodiment will be described. The description may be omitted.

FIG. 8 is a perspective view showing the housing 20 of the second embodiment.
8 is a view corresponding to FIG. 5, in which the first housing 23 and the second housing 27 are separated and various components housed in the housing 20 are omitted. 20 is a perspective view such that the inside of 20 can be seen. FIG.

Further, in the following description, when pointing out a similar configuration, the drawings used in the first embodiment may be referred to.

As shown in FIG. 8, similarly to the first embodiment, the second restricting portion 92 of the second housing 27 of the second embodiment also extends from the second surface portion 25 of the second housing 27 to the first housing 23 side. The motor 30 (see FIG. 2), which is provided so as to project into the second bearing portion 31bb (see FIG. 2) of the second end 31b (see FIG. 2) of the motor 30 (see FIG. 2), is sandwiched. Of the pair of side portions 92a, 92b arranged in a direction intersecting the direction of the rotation axis 32 (Z-axis direction in FIG. 2) (direction substantially orthogonal in the illustrated example) and the end portion side of the second bearing portion 31bb. It is the same in that it is provided with a wall portion 92c that connects the pair of side portions 92a and 92b.

On the other hand, as shown in FIG. 8, in the second housing 27 of the second embodiment, the wall portion 92c of the second restricting portion 92 has the first housing 23 into which the protrusion 97 of the first housing 23 is inserted. It differs from the first embodiment in that it has a notch 92d that is open to the side.

Corresponding to this, the protrusion 97 of the second embodiment has a width in the direction of the rotation axis 32 (Z-axis direction of FIG. 2) as compared with the protrusion 97 of the first embodiment shown in FIG. Is largely designed on the side of the motor 30.

More specifically, when the first housing 23 is separated from the second housing 27 and the motor 30 is provided in the second housing 27, the receiving portion 95 is It is provided so as to be separated from the second bearing portion 31bb by a first distance (hereinafter referred to as a first separation distance) in the direction of the rotating shaft 32 (Z-axis direction in FIG. 2).

However, since the first distance in the second embodiment is the distance from the second bearing portion 31bb, it is a little longer than the first distance in the first embodiment in terms of a quantitative distance.
However, by making the position where the receiving portion 95 is provided closer to the second bearing portion 31bb side, the first distance of the second embodiment is quantitatively the same as the first distance of the first embodiment. You may

Then, in the direction of the rotating shaft 32, the width of the portion of the protruding portion 97 provided on the first housing 23, which is inserted between the receiving portion 95 and the wall portion 92c, is larger than the first separation distance. There is.
Further, the protrusion 97 has a wedge-like shape in which the tip of the protrusion 97 is smaller than the first distance so that the protrusion 97 can be smoothly inserted between the receiving portion 95 and the second bearing portion 31bb. ..

FIG. 9 is a cross-sectional view taken along the rotary shaft 32 for explaining a state where the motor 30 is provided in the housing 20.
In FIG. 9, the internal structure of the motor 30 and the worm gear 41 and the like provided in the housing 20 are omitted.

Then, as shown in FIG. 9, in the second embodiment, the protruding portion 97 directly urges the second bearing portion 31bb toward the first restricting portion 91 (see FIG. 2).
The protruding portion 97 is press-fitted between the receiving portion 95 and the second bearing portion 31bb, and the protruding portion 97 directly presses the motor 30 strongly against the first restricting portion 91.

Even with the configuration of the second embodiment as described above, it is possible to reliably suppress the vibration of the motor 30 in the direction of the rotation shaft 32 (Z-axis direction in FIG. 2) as in the first embodiment. Noise can be suppressed.

Also in the second embodiment, the motor 30 is press-fitted between the first restricting portion 91 and the second restricting portion 92 while the first housing 23 is separated from the second housing 27. In order to achieve this, the second restricting portion 92 is provided with the wall portion 92c with which the second bearing portion 31bb comes into contact. However, when the first housing 23 is separated from the second housing 27, When the motor 30 is not press-fitted between the first regulation portion 91 and the second regulation portion 92, the wall portion 92c may be omitted and only the pair of side portions 92a and 92b may be provided.

In the present embodiment, as shown in FIGS. 2 and 5, the protrusion 97 is inserted into a position between the receiving portion 95 and the second end 31b of the motor 30, and the second end 31b of the motor 30 is inserted into the first end 31b. Although the first regulation portion 91 is biased, the invention is not limited to this.
For example, the receiving portion 95 may be deformed by inserting the protruding portion 97 into a position between the receiving portion 95 and the second end portion 31b of the motor 30.
The deformed reaction force of the second restricting portion 92 can be applied to the protruding portion 97 to suppress the vibration of the main body portion 31 itself of the motor 30.

In addition, by inserting the protruding portion 97 into a position between the receiving portion 95 and the second end portion 31b of the motor 30, friction is generated between the second end portion 31b, the protruding portion 97, and the receiving portion 95. The vibration of the main body 31 itself of the motor 30 can be attenuated to prevent the vibration from propagating to the outside.

Further, the bending rigidity of the entire projecting portion 97 and the receiving portion 95 may be improved by inserting the projecting portion 97 into a position between the receiving portion 95 and the second end 31b of the motor 30.
By improving the bending rigidity, the protrusion 97 and the receiving portion 95 as a whole are less likely to be deformed by the vibration of the main body 31 of the motor 30, and the magnitude (amplitude) of the vibration propagating to the outside can be reduced.

The following concept is described in the above-mentioned 1st Embodiment and 2nd Embodiment. It includes a first housing 23, a second housing 27, and a motor 30.
The motor 30 is arranged between the first housing 23 and the second housing 27.
A first protrusion (corresponding to the protrusion 97) that protrudes toward the second casing 27 is provided inside the first casing 23.
The second housing 27 includes a contact portion that comes into contact with one of the both surfaces of the motor 30 in the direction of the rotation axis 32.

Here, both surfaces of the motor 30 correspond to the first end portion 31a and the second end portion 31b in the first and second embodiments.
Further, one surface corresponds to the first end portion 31a or the second end portion 31b.

The first projecting portion (corresponding to the projecting portion 97) urges the other surface toward the contact portion directly or via another member.
The other member corresponds to, for example, the wall portion 92c of the second restriction portion 92 of the motor 30 in the first and second embodiments.

Although the present invention has been described above based on the embodiment, it goes without saying that the present invention is not limited to the embodiment and various modifications can be made without departing from the gist of the present invention.
Therefore, various modifications without departing from the scope of the invention are also included in the technical scope of the present invention, which is obvious to those skilled in the art from the description of the claims. ..

10... Rotating device, 20... Casing, 21... 1st surface part, 22... 1st side wall part, 22a... Recessed part, 22b... Engaging part, 22c... Engaging part, 22ca... Hole, 22d... Part, 23... 1 housing|casing, 25... 2nd surface part, 25a... opening part, 26... 2nd side wall part, 26a... protrusion, 26b... partial, 27... 2nd housing|casing, 30... motor, 31... main-body part, 31a... 1st End part, 31aa... 1st bearing part, 31b... 2nd end part, 31bb... 2nd bearing part, 32... Rotating shaft, 33... Motor terminal, 35... Second connection terminal, 35a... Connection part, 40... Transmission gear , 41... Worm gear, 42... First two-stage gear, 42a... Large diameter gear, 42b... Small diameter gear, 43... Second two-stage gear, 43a... Large diameter gear, 43b... Small diameter gear, 50 Output gear, 51... Engaging portion, 60... Gear, 70... Sensor, 71... First connection terminal, 72... Resistor substrate, 73... Base portion, 74... Cover portion, 80... Flexible wiring board, 81... Hole , 82... Hole, 83... Bent portion, 91... First regulating portion, 91a, 91b... Projection portion, 91c... Surface, 92... Second regulating portion, 92a, 92b... Side portion, 92c... Wall portion, 92ca... Line projections, 92d... Notches, 93... Supports, 95... Receiving parts, 97... Projections, A, B, C, D... Mounting parts, X... Regions

Claims (5)

A motor having a rotating shaft,
A plurality of gears including an output gear that outputs the rotation of the rotation shaft to the outside,
A housing that houses the motor and the gear,
The housing is separable into a first housing and a second housing,
The motor is
A first end from which the axis of rotation is derived;
A second end located on the opposite side of the first end,
The second housing is
A first restriction part for restricting the position of the motor on the first end side,
The first casing includes a protrusion that protrudes toward the second casing,
The protruding portion urges the second end portion of the motor toward the first restriction portion side directly or through another member,
The second end of the motor has a second bearing,
The second housing includes a second restricting portion that restricts a position of the motor on the second end side.
The second restriction portion includes a wall portion that faces the second bearing portion in the rotation axis direction,
The wall portion has a recess opening to the first casing side,
A rotating device in which the protrusion is inserted into the recess. The second end of the motor has the second bearing portion,
The second housing includes a receiving portion that receives the protruding portion,
The receiving portion is provided so as to be separated from the second bearing portion by a first distance in the rotation axis direction,
The rotating device according to claim 1, wherein the protruding portion is press-fitted between the second bearing portion and the receiving portion. The rotating device according to claim 2, wherein the protruding portion directly urges the second bearing portion toward the first regulating portion side. The rotation device according to claim 2 or 3, wherein a width of a part of the protruding portion inserted between the receiving portion and the second bearing portion is larger than the first distance. The rotating device according to any one of claims 2 to 4, wherein a tip portion of the projecting portion has a wedge shape that is tapered to be smaller than the first distance.