Rotation device

Abstract

To provide a rotation device which enables reduction of its thickness.SOLUTION: A rotation device according to an aspect of the invention includes a motor, a worm gear, a gear, a sensor, a wiring board electrically connecting the motor to the outside, an electronic component attached to the wiring board, and a housing. The motor has a terminal, a frame, and a rotary shaft. The frame has a bottom surface part and a top surface part in a rotation axis direction. The gear engages with the worm gear. The housing houses the motor, the wiring board, and the electronic component. In the rotation axis direction, the terminal is provided at the bottom surface part of the frame. The worm gear is attached to one portion of the rotary shaft protruding from the top surface part of the frame. The wiring board is formed of a flexible film. The electronic component is held by the housing. The housing includes a side wall part, a space for holding the electronic component, and one or multiple holding parts provided in the space. The space is located at the side wall part side relative to the holding part.SELECTED DRAWING: Figure 5A

Description

Technical Field

[0001] The present invention relates to a rotating device.

Background Art

[0002] Conventionally, there has been a rotating device (motor actuator) provided with a motor, an output gear, and a sensor for detecting the rotational position (rotation angle) of this output gear, and for example, it is possible to drive a plurality of switching doors (louvers) provided in the air passage of a vehicle air conditioning system (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a rotating device that can suppress damage to electronic components or maintain electrical connection between electronic components and a substrate.

Means for Solving the Problems

[0005] In order to achieve the above object, the present invention is grasped by the following configuration. A rotating device according to one aspect of the present invention includes a motor, a worm gear, a gear, a sensor, a wiring board for electrically connecting the motor to the outside, an electronic component mounted on the wiring board, and a housing. The motor has a terminal, a frame, and a rotating shaft. The frame has a bottom surface portion and a top surface portion in the rotating shaft direction. The gear meshes with the worm gear. The housing houses the motor, the wiring board, and the electronic component. In the rotating shaft direction, the terminal is provided on the bottom surface portion of the frame. The worm gear is mounted on a part of the rotating shaft protruding from the top surface portion of the frame. The wiring board is formed of a flexible film. The electronic component is held by the housing. The housing includes a side wall portion, a space for holding the electronic component, and one or a plurality of holding portions provided in the space, and the space is on the side wall portion side with respect to the holding portion.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5A

Figure 5B

Figure 6

Figure 7A

Figure 7B

Figure 8A

Figure 8B

Figure 9

Figure 10

Figure 11A

Figure 11B

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Mode for Carrying Out the Invention

[0007] Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as "embodiments") will be described in detail based on the accompanying drawings. Note that the same reference numerals are assigned to the same components throughout the description of the embodiments.

[0008] [First Embodiment] FIG. 1 is a perspective view of a rotating device according to a first embodiment, and FIG. 2 is a plan view of the rotating device according to the first embodiment with the first housing removed. Further, FIG. 3 is an exploded perspective view of the rotating device according to the first embodiment, and FIG. 4 is a plan view of the rotating device according to the first embodiment. Further, FIG. 5A is a cross-sectional view taken along line A-A of FIG. 4, and FIG. 5B is a cross-sectional view taken along line B-B of FIG. 4. Further, FIG. 19 is a schematic explanatory view showing an air conditioning system including the rotating device according to the embodiment.

[0009] The rotating device 1 according to the embodiment is used, for example, in a vehicle air conditioning system 100 as shown in FIG. 19, and can control the rotation operation of a louver 104 for controlling the air volume and the like. The vehicle air conditioning system 100 includes a blower fan 101, an evaporator 102 that cools the air sent out from the blower fan 101, and a heater 103 disposed downstream of the evaporator 102. A louver 104 for controlling the supply amount of air flowing from the evaporator 102 side to the heater 103 side is disposed between the evaporator 102 and the heater 103, and the drive shaft 104a of the louver 104 is rotated by the rotating device 1.

[0010] As shown in FIG. 1, the rotating device 1 includes a housing 2 that houses functional parts therein. Here, the functional parts are specifically composed of a motor 3, a plurality of transmission gears 6, an output gear 5, a sensor 7, etc., which will be described later.

[0011] The housing 2 is configured by connecting a first housing 21 having an opening and a second housing 22 having an opening in a state where the openings face each other. The first housing 21 has a first surface portion 210 that becomes the top surface portion of the housing 2, a first side wall portion 211 provided on the outer peripheral portion of the first surface portion 210, and an opening 214 surrounded by the first side wall portion 211. The second housing 22 has a second surface portion 220 (see FIGS. 5A and 5B) that becomes the bottom portion of the housing 2, a second side wall portion 222 provided on the outer peripheral portion of the second surface portion 220, and an opening 226. The housing 2 is formed of a resin material such as polypropylene, polyethylene terephthalate, or ABS.

[0012] On the first housing 21, a plurality of engaging portions 212 are integrally formed on the outer periphery of the first side wall portion 211 so as to extend toward the second housing 22 side, and holes (hereinafter referred to as engaging holes) are provided in such engaging portions 212. On the other hand, as shown in FIGS. 2 and 3, on the second housing 22, a plurality of protrusions (hereinafter referred to as engaging protrusions 224) corresponding to each of the plurality of engaging portions 212 of the first housing 21 are integrally formed on the second side wall portion 222. Such engaging protrusions 224 engage with the engaging holes of the engaging portions 212.

[0013] That is, by aligning the first housing 21 and the second housing 22 so that the engaging protrusions 224 of the second housing 22 engage with the engaging holes of the engaging portions 212 of the first housing 21, the first housing 21 and the second housing 22 are integrated, and a housing 2 (see FIG. 1) that houses a functional unit having various components shown in FIGS. 2 and 3 is configured.

[0014] In this embodiment, the engaging portions 212 are provided on the first housing 21 and the engaging protrusions 224 are provided on the second housing 22. However, the engaging portions 212 may be provided on the second housing 22 and the engaging protrusions 224 may be provided on the first housing 21.

[0015] Also, although details will be described later, the first housing 21 is provided with a plurality of protruding portions 91 (FIG. 3), and the second housing 22 is provided with a plurality of through holes 92 corresponding to each of these plurality of protruding portions 91. In a state where the first housing 21 and the second housing 22 are butted against each other and connected to be integrated, the protruding portions 91 are respectively fitted into the through holes 92. These protruding portions 91 and through holes 92 extend in the rotational axis direction of the transmission gear 6 or the output gear 9.

[0016] Also, as shown in FIGS. 3, 5A, and 5B, the first housing 21 and the second housing 22 are each formed with protruding portions 213 and 223 that correspond to each other. In this embodiment, the protruding portions 213 and 223 protrude in the direction in which the rotation shaft of the motor 3 or the first connection terminal 74 or the second connection terminal 40 of the sensor 7 described later extends. These protruding portions 213 and 223 are joined together to form a connector portion 200 (FIG. 1).

[0017] As shown in FIG. 3, the connector portion 200 is formed with a concave holding portion 201 that holds a plurality of second connection terminals 40 that are electrically connected to the first connection terminal 74 (FIG. 5A) provided in the sensor 7 described later. As shown in the drawing, one end of the second connection terminal 40 is formed with a piece 40a that protrudes upward. This piece 40a is paired with the tip of the connection terminal 74 of the sensor 7 described later. In FIG. 3, for the sake of convenience, a state in which one of the second connection terminals 40 is removed from the plurality of holding portions 201 is shown, but a plurality (3 to 5) of second connection terminals 40 are provided as necessary.

[0018] Also, as shown in FIG. 1, on the outer periphery of the first housing 21, four mounting portions 23, 24, 25, and 26 are provided for mounting the rotating device 1 at a predetermined position when the rotating device 1 is incorporated into, for example, an air conditioning system.

[0019] As various components that constitute the functional portion housed in the housing 2, the rotating device 1 includes, as shown in FIGS. 2 and 3, a motor 3, an output gear 5 that mechanically outputs the rotation of the rotation shaft 31 of the motor 3 to the outside, a plurality of transmission gears 6 that transmit the rotation of the motor 3 to the output gear 5, and a sensor 7 that detects the rotation angle of the output gear 5. The sensor 7 includes a sensor portion 70 (see FIG. 7B) described later and a case (hereinafter referred to as a sensor housing 72) that houses the sensor portion 70. Based on the rotation angle of the output gear 5 detected by this sensor portion 70, the rotating device 1 can perform rotation control of the motor 3.

[0020] The plurality of transmission gears 6 together include a first transmission gear 61 and a second transmission gear 62 which are both configured in multiple stages. By meshing the plurality of gears, the rotation of the rotation shaft 31 of the motor 3 is transmitted to the output shaft 51 of the output gear 5.

[0021] Also, as shown in FIGS. 2 and 3, the rotating device 1 according to the present embodiment includes a flexible wiring board 8 as a board that electrically connects the second connection terminal 40, the motor 3, and the sensor 7. Through this wiring board 8 and the second connection terminal 40, an input / output signal for driving the motor 3 and a signal corresponding to the rotation angle of the output gear 5 from the sensor 7 can be obtained from the outside. Here, electrically connecting includes the case of directly connecting two members and the case of connecting through other members. The board is included in the concept of the connection member described later.

[0022] Hereinafter, each element constituting the functional part will be described more specifically.

[0023] (Motor 3) The motor 3 is a driving device for rotating the output gear 5. In the present embodiment, a DC motor is used for the motor 3. As shown in FIG. 3, the motor 3 includes a main body part 30 having an outer shell (frame) with a quadrangular prism shape with curved corners, a rotation shaft 31, and a pair of terminals 33, 33. In the rotation axis direction, the main body part 30 includes two side surfaces that become the top surface part and the bottom surface part. A part (including the end part) of the rotation shaft 31 is led out from one side surface (top surface part) of the main body part 30. The pair of terminals 33, 33 are provided on the other side surface (bottom surface part) of the main body part 30 in the rotation axis direction. Note that a part of the rotation shaft 31 on one side is fixed to a rotor (not shown) housed in the main body part 30 of the motor 3, and a worm gear 4 is attached to a part of the rotation shaft 31 on the other end part side protruding from the main body part 30.

[0024] (Transmission Gear 6) The transmission gear 6 is a gear for transmitting the rotation of the rotating shaft 31 of the motor 3 to the output gear 5 at a predetermined reduction ratio (gear ratio). In this embodiment, as described above, it has a first transmission gear 61 and a second transmission gear 62, both of which are configured in multiple stages. Note that the transmission gear can also include the worm gear 4 attached to the rotating shaft 31 of the motor 3.

[0025] Specifically, as shown in FIG. 3, the transmission gear 6 includes a first transmission gear 61 having a first large-diameter portion 611 and a first small-diameter portion 612, and a second transmission gear 62 having a second small-diameter portion 621 and a second large-diameter portion 622. The diameter of the first large-diameter portion 611 is formed larger than the diameter of the first small-diameter portion 612. The relationship between the second large-diameter portion 622 and the second small-diameter portion 621 is the same.

[0026] The first large-diameter portion 611 of the first transmission gear 61 meshes with the worm gear 4 attached to the rotating shaft 31 of the motor 3. Also, the first small-diameter portion 612 of the first transmission gear 61 meshes with the second large-diameter portion 622 of the second transmission gear 62, and the second small-diameter portion 621 of the second transmission gear 62 meshes with the output gear 5. In this way, by the meshing of a plurality of gears, the rotation of the rotating shaft 31 of the motor 3 is transmitted to the output shaft 51 of the output gear 5 at a predetermined reduction ratio.

[0027] In this embodiment, two first transmission gears 61 and a second transmission gear 62 configured in multiple stages are used to transmit the rotation of the rotating shaft 31 of the motor 3 to the output gear 5 while adjusting the gear ratio using a small space. However, for example, the second transmission gear 62 can be omitted and the output gear 5 can be meshed with the first small-diameter portion 612 having a small diameter of the first transmission gear 61. It is also possible to omit both the first transmission gear 61 and the second transmission gear 62 and directly mesh the output gear 5 with the worm gear 4.

[0028] (Output gear 5) The output gear 5 is provided with a recess 50 in the rotation axis direction (the extending direction of the output shaft 51 serving as the rotation axis). Specifically, as shown in FIG. 3, the output gear 5 includes a gear body 5a having an outer peripheral surface with a tooth row 52 formed thereon and the recess 50. This gear body 5a has a cylindrical shape. A part of the sensor 7 is accommodated in the recess 50 formed inside the gear body 5a.

[0029] Specifically, as shown in FIGS. 5A and 5B, in the extending direction of the output shaft 51 passing through the center of the gear body 5a, a recess 50 is provided in the gear body 5a, which includes a bottom portion formed on the side surface of the gear body 5a, an inner wall surface, and an opening surrounded by the inner wall surface. And a part of the sensor housing 72 that houses the sensor portion 70 is accommodated in the upper side of this recess 50, that is, at a position facing the first surface portion 210 of the first housing 21 in the recess 50.

[0030] Also, as described above, the second transmission gear 62 is a multi-stage gear having a second large-diameter portion 622 to which the rotation from the motor 3 is transmitted and a second small-diameter portion 621 that extends from the second large-diameter portion 622 and transmits the rotation to the output gear 5. In the rotation axis direction of the output gear 5, the second large-diameter portion 622 of the second transmission gear 62 is arranged so as to partially overlap the output gear 5 (see FIG. 2). Therefore, the sensor housing 72 is arranged between the second large-diameter portion 622 of the second transmission gear 62 and the output gear 5.

[0031] Here, when describing the vertical positional relationship, it is based on the state where the first housing 21 of the rotating device 1 is relatively on the upper side and the second housing 22 is on the lower side.

[0032] Further, the cross-sectional shape of the upper end portion (one end portion) of the output shaft 51 is D-shaped, and it is formed in a shape that can be fitted with a rotating plate 71 described later. The lower half of the output gear 5 is formed with a larger diameter than the upper half of the output gear 5, and an engaging portion 54 is formed on the inner peripheral surface of the lower half, with which an external shaft such as the drive shaft 104a of the louver 104 of the air conditioning system 100 described above is engaged. Therefore, by rotating the output gear 5, the pivoting operation of the louver 104 can be controlled, and the air volume of the air conditioning system 100 can be adjusted (see FIG. 19).

[0033] Incidentally, as described above, the drive shaft 104a of the louver 104 of the air conditioning system 100 mounted on a vehicle or the like is connected to the output gear 5. That is, the output gear 5 is a gear for outputting the rotational force of the rotation shaft 31 of the motor 3 as a driving force for controlling the drive shaft 104a of the louver 104. However, the mode of directly connecting the output gear 5 to a shaft to be rotated such as the drive shaft 104a of the louver 104 is not necessarily limited. For example, a mode in which a gear as another member is interposed between the rotating device 1 and the shaft to be rotated may be used, and in that case, the rotation shaft of the interposed gear may be connected to the output gear 5.

[0034] (Sensor 7) As described above, for example, the air conditioning system 100 (see FIG. 19) mounted on an automobile is provided with a louver 104. In order to drive the louver 104 to a predetermined state, the rotation angle of the output gear 5 can be detected using the sensor 7.

[0035] In order to thin the rotating device 1, the sensor 7 according to the present embodiment houses a brush 75 that provides thickness in the height direction in the sensor housing 72, and realizes the thinning of the rotating device 1 while not going against the thinning of the sensor 7.

[0036] Hereinafter, the sensor 7 will be specifically described with reference to the drawings. FIG. 6 is a plan view of the sensor housing 72. Further, FIG. 7A is a cross-sectional view taken along line C-C of FIG. 6, and FIG. 7B is a cross-sectional view taken along line D-D of FIG. 6. Further, FIG. 8A is an exploded perspective view seen from the front surface side of the main surface of the sensor housing 72, and FIG. 8B is an exploded perspective view seen from the back surface side of the rotating body of the sensor housing 72 (the side opposite to the surface on which the wiring board 8 described later is provided).

[0037] The sensor 7 includes a sensor unit 70 having a sensor substrate 73 and a brush 75, and a sensor housing 72 that houses the sensor unit 70. By using the sensor 7, it is possible to detect the rotation angle of the output gear 5.

[0038] As shown in FIGS. 6, 8A, and 8B, the sensor housing 72 has a first region A having an arc-shaped planar shape and a second region B having a square planar shape. The first region A is surrounded by a first side portion 72a that is curved in the circumferential direction. This first side portion 72a is formed by a wall portion 722. The second region B is surrounded by a second side portion 72b. This second side portion 72b is formed by a wall portion 722. That is, the first side portion 72a and the second side portion 72b are integrally formed. A part of the first side portion 72a becomes a part of the sensor housing 72 that is accommodated in the concave portion 50 of the output gear 5. This part of the sensor housing 72 is a portion 72aa that protrudes from a part of the first side portion 72a with respect to the second side portion 72b in the rotation axis direction of the output gear 5.

[0039] As shown in FIGS. 6, 8A, and 8B, a first hole portion (hereinafter referred to as a first circular hole) 723 having a circular shape is formed at the central position of the first side portion 72a of the sensor housing 72. A boss portion 711 provided at the center of a rotating plate 71, which is a plate that rotates together with the output gear 5, can be inserted into the first circular hole 723. A hole portion (hereinafter referred to as a fitting hole) 712 is formed in the boss portion 711, and the fitting hole 712 is fitted to the end portion of the output shaft 51 having a D-shaped cross section.

[0040] Further, a plurality (here, three) of rectangular holes (hereinafter referred to as rectangular holes) 721 for protruding the end portion (tip portion) of the first connection terminal 74 are formed in the second side portion 72b of the sensor housing 72.

[0041] As shown in FIGS. 7B, 8A, and 8B, the sensor unit 70 includes a brush 75 having conductivity serving as a contact portion, and a substrate (hereinafter referred to as a sensor substrate) 73 provided with a conductive portion 730 (FIG. 8B) which is a portion to be contacted with the brush 75. The conductive portion 730 is electrically connected to the outside.

[0042] The sensor substrate 73 is formed of, for example, an epoxy resin having a thickness of about 300 μm to about 1600 μm, and includes an annularly formed portion (hereinafter referred to as an annular portion) 73a and a rectangularly formed portion (rectangular portion) 73b. The sensor substrate 73 is formed harder than a flexible wiring board 8 described later. The annular portion 73a is disposed within a region surrounded by the first side portion 72a of the sensor housing 72, and the rectangular portion 73b is disposed within a region surrounded by the second side portion 72b of the sensor housing 72. A hole 735 is formed in the rectangular portion 73b, and the tip portion of the first connection terminal 74 is inserted therethrough. The planar shape of this hole 735 is formed in a rectangular shape.

[0043] Further, as shown in FIGS. 8A and 8B, the sensor substrate 73 includes a second hole (hereinafter referred to as a second circular hole) 733 through which the boss portion 711 of the rotating plate 71 fitted to the output shaft 51 of the output gear 5 is inserted, and a conductive portion 730 formed by a known method such as printing on the outer periphery of the second circular hole 733.

[0044] Such a conductive portion 730 has an output portion 731 formed on the second circular hole 733 side and formed of a conductive material with low electrical resistance, and a resistance portion 732 formed outside the output portion 731 and formed of a conductive material with high electrical resistance.

[0045] Further, as shown in FIG. 8A, the brush 75 includes two contacts 751 and 752 as one end, and the other end 753 connected to the two contacts 751 and 752. The end 753 is fixed and held on the surface 713 of the rotary plate 71 facing the sensor substrate 73 so that the two contacts 751 and 752 contact the sensor substrate 73.

[0046] The output portion 731 is formed to surround the second circular hole 733 along the outer periphery of the second circular hole 733, and includes an annular portion with which one of the two contacts 751 and 752 of the conductive brush 75 shown in FIG. 8A contacts, and a lead-out portion 734a drawn from this annular portion.

[0047] Further, the resistance portion 732 is formed in an arc shape along the outer periphery of the annular portion of the output portion 731, and includes an arc-shaped portion with which the other contact 751 of the brush 75 shown in FIG. 8A contacts, a first lead-out portion 734b drawn from one end of this arc-shaped portion, and a second lead-out portion 734c drawn from the other end of the arc-shaped portion.

[0048] The conductive portion 730 having such a configuration constitutes a variable resistance portion. That is, when the contact positions of the contacts 751 and 752 of the brush 75 change (in the circumferential direction) along the annular portion and the arc-shaped portion, the resistance value of the path from the first lead-out portion 734b to the lead-out portion 734a changes. Therefore, when a voltage is applied between the first lead-out portion 734b and the second lead-out portion 734c and the contact position of the brush 75 is displaced (in the circumferential direction) along the annular portion and the arc-shaped portion, the voltage between the first lead-out portion 734b and the lead-out portion 734a changes, and the rotation angle of the output gear 5 can be detected based on this voltage change.

[0049] Since the sensor portion 70 in the present embodiment has the above-described configuration, in the rotation axis direction of the output gear 5, the brush 75 is disposed inside a part of the sensor housing 72, and moreover, this brush 75 is disposed on the side of the output gear 5 with respect to the sensor substrate 73. That is, with respect to the recess 50 provided in the output gear 5, the rotary plate 71, the brush 75, and the sensor substrate 73 are arranged in this order from the side of the bottom portion 53 that is the bottom of the recess 50.

[0050] Therefore, in the rotating device 1 according to the present embodiment, the assembly of the sensor 7 becomes extremely easy. That is, for example, the sensor substrate 73 is pre-attached to the back side of the sensor housing 72, and the sensor housing 72 is covered from above the prepared rotating plate 71 so that the contact points 751 and 752 of the brush 75 fixed to the rotating plate 71 come into contact with the conductive portions 730 of the sensor substrate 73.

[0051] In addition, since the sensor unit 7 including the sensor substrate 73 and the brush 75 can be covered and protected by the sensor housing 72, the handling of the sensor 7 also becomes easy.

[0052] In this embodiment, a case is illustrated in which a rotary resistance type position sensor is configured in such a manner that the contact position of the brush 75 with respect to the conductive portion 730 changes in the circumferential direction between the sensor substrate 73 and the conductive brush 75, thereby changing the resistance value. However, the configuration of the conductive portion 730 does not necessarily have to be limited to the configuration of this embodiment.

[0053] For example, notches may be provided at a constant pitch on the arc-shaped portion from the outer peripheral side (or the inner peripheral side), and when the contact points 751 and 752 of the brush 75 are located in the notches, power is not supplied (hereinafter also referred to as OFF), and power is supplied (hereinafter also referred to as ON) at positions without notches. Then, the rotation angle of the output gear 5 may be detected based on the number of ON-OFF detections.

[0054] (The first connection terminal 74 and the second connection terminal 40) The first connection terminal 74 and the second connection terminal 40 are connection terminals connected to an external connector connected to the rotating device 1.

[0055] The first connection terminal 74 has one end electrically connected to the sensor substrate 73 and the other end electrically connected to the outside, and one end is connected to the lead-out portion 734a, the first lead-out portion 734b, or the second lead-out portion 734c of the sensor substrate 73.

[0056] The other end of such a first connection terminal 74 is bent as shown in FIGS. 7A and 7B to form a bent portion 74a, and the tip of the bent portion 74a extends in a direction away from the bottom 53 of the recess 50 provided in the output gear 5 as shown in FIG. 5A.

[0057] Also, a second connection terminal 40 electrically connected to the first connection terminal 74 is provided on the housing 2. That is, as shown in FIG. 3, it is held by a holding portion 201 formed in the connector portion 200 (see FIG. 1) of the housing 2. The second connection terminal 40 includes a protruding portion 40b that extends in a direction opposite to the direction in which the piece 40a protrudes. This protruding portion 40b is inserted into the holding portion 201, and the second connection terminal 40 is held by the housing 2. In the present embodiment, the first connection terminal 74 is formed by punching a metal plate material into a predetermined shape.

[0058] And the other end of the first connection terminal 74 and the piece 40a formed at one end of the second connection terminal 40 are electrically connected via a flexible wiring board 8. The piece 40a is provided at one end of the second connection terminal 40 and protrudes in a direction away from the bottom 53 of the recess 50 provided in the output gear 5.

[0059] In this way, since the bent portion 74a bent upward is formed on the first connection terminal 74 and the piece 40a is formed on the second connection terminal 40, a stable connection can be made via the flexible wiring board 8 (see FIGS. 2 and 3) described later.

[0060] (Wiring board 8) The wiring board 8 is formed of a flexible film and has three large planar portions 81, 82, 83 as shown in FIG. 3. Specifically, it includes a first planar portion 81 on one end side connected to the first connection terminal 74 and the second connection terminal 40, a second planar portion 82 on the other end side connected to the terminal 33 of the motor 3, and a third planar portion 83 connecting the first planar portion 81 and the second planar portion 82.

[0061] On the first planar portion 81, there are provided a hole portion that engages with one end portion of the first connection terminal 74 (hereinafter referred to as the end portion on the bent portion 74a side), and a hole portion that engages with one piece 40a of the second connection terminal 40. By engaging the end portion on the bent portion 74a side of the first connection terminal 74 and one piece 40a of the second connection terminal 40 with these hole portions and performing soldering, reliable electrical connection can be achieved. Therefore, poor contact can be suppressed.

[0062] The flexible wiring board 8 has a structure in which, for example, an adhesive layer is formed on a film (resin substrate) with a thickness of about 12 μm to 50 μm, and a conductor with a thickness of about 12 μm to about 50 μm is printed or laminated on the adhesive layer. As the film, it is formed of an insulating resin material such as polyimide or polyester. Also, the conductor is formed of a metal material such as copper. The adhesive layer is formed of an epoxy resin or an acrylic resin. Such a wiring board 8 is a flexible substrate that can be restored to its form before bending even when bent at an angle of 90 degrees or more.

[0063] In this way, since the first connection terminal 74 and the second connection terminal 40 are connected by the flexible wiring board 8, for example, even if the first connection terminal 74 and the second connection terminal 40 vibrate due to the vibration of a vehicle such as an automobile, before a strong stress is applied to the connection portion electrically connected by solder or the like, the flexible wiring board 8 changes shape (or absorbs vibration) and the amplitude of the vibration decays, and it is possible to avoid a strong stress being applied to the connection portion, so it is possible to avoid cracks or breakages occurring in the connection portion.

[0064] In this way, since the first connection terminal 74 and the second connection terminal 40 are electrically connected using the flexible wiring board 8, for example, it is easier to handle and more advantageous in terms of manufacturing cost than using a thin and easily damaged lead wire.

[0065] In this embodiment, as shown in FIG. 3, a hole engaging with the terminal 33 is also provided in the second flat portion 82 of the wiring board 8 connected to the terminal 33 of the motor 3. By engaging the hole portion formed in the terminal 33 of the motor 3 and performing soldering, reliable electrical connection can be achieved.

[0066] (Characteristic configuration of the housing 2) Here, a description will be added regarding the configuration of the housing 2 of the rotating device 1 according to this embodiment, particularly the characteristic configuration of the housing 2 in this embodiment. FIG. 9 is a front view of the rotating device 1 installed on the jig, and FIG. 10 is a plan view of the rotating device 1 installed on the jig. Further, FIG. 11A is a cross-sectional view taken along the line E-E of FIG. 10, and FIG. 11B is an explanatory view corresponding to the cross-sectional view of FIG. 11A showing a state in which the first housing 21 and the second housing 22 of the rotating device 1 installed on the jig are separated.

[0067] As described above, the housing 2 according to this embodiment has the opposing first housing 21 and second housing 22. The housing 2 includes a transmission gear 6 including a worm gear 4, a first transmission gear 61, and a second transmission gear 62 as a motor 3 housed in the housing 2 and a gear for transmitting the rotation of the motor 3 to the outside, and an output gear 5.

[0068] In a conventional rotating device having a configuration similar to that of the housing 2, the rigidity of the housing 2 having the first housing 21 and the second housing 22, or the reproducibility of the disassembly and assembly of the housing 2 is not particularly considered.

[0069] Therefore, in the rotating device 1 according to this embodiment, as shown in FIG. 3, the first housing 21 is provided with a plurality of protruding portions 91 extending in the rotational axis direction of the output gear 5, and the second housing 22 is provided with a plurality (here, four) of through holes 92 respectively corresponding to the plurality of protruding portions 91 as shown in FIGS. 2 and 3. In the housing 2 configured by connecting the first housing 21 and the second housing 22, the plurality of protruding portions 91 are respectively fitted into the plurality of through holes 92.

[0070] In this way, by providing a plurality of protrusions 91 and a plurality of through-holes 92 and fitting these with each other, the joining and separation of the first housing 21 and the second housing 22 can be easily performed. Therefore, the analysis and maintenance of the functional parts housed in the housing 2 can also be conveniently carried out.

[0071] Incidentally, it is preferable to provide at least two or more sets of a plurality of protrusions 91 and a plurality of through-holes 92 that correspond to each other. That is, if there are two sets, when joining the first housing 21 and the second housing 22, it can be used as a reference for accurately positioning in the X and Y directions. Here, the X and Y directions are directions along the surface portions 210 and 220 of the first and second housings.

[0072] And at least two protrusions 91 shall be press-fitted into the corresponding through-holes 92 respectively. In the present embodiment, four sets of protrusions 91 and through-holes 92 are provided, and all the protrusions 91 are press-fitted into the through-holes 92.

[0073] Therefore, the rigidity of the entire housing 2 can be increased, and the generation of abnormal noise can be suppressed. Also, since the sound generated inside the rotating device 1 does not leak out from the through-holes 92, there is no risk of impairing the quietness.

[0074] Note that in the first housing 21 shown in FIG. 3, only one protrusion 91 appears, but actually, four protrusions 91 corresponding to the four through-holes 92 provided in the first housing 21 shown in FIGS. 2 and 3 are provided.

[0075] Also, as is clear from FIGS. 11A and 11B, in the direction in which the protrusion 91 extends, the dimension of the through-hole 92 is made larger than the dimension of the protrusion 91.

[0076] With such a configuration, the jig 11 can be used to easily separate the first housing 21 and the second housing 22. That is, as shown in FIG. 9, by using the jig 11 including the rod-like bodies 11a to 11d respectively corresponding to the plurality of through holes 92 provided in the second housing 22 and the support base 110 that supports these rod-like bodies 11a to 11d, the first housing 21 and the second housing 22 can be separated very easily.

[0077] The method for separating the housing 2 into the first housing 21 and the second housing 22 includes, as shown in FIG. 9, the step of installing the above-described jig 11 and the step of inserting the plurality (here, four) of rod-like bodies 11a to 11d into the plurality (four) of through holes 92 formed in the second housing 22, and further includes the step of pressing the second housing 22 toward the support base 110 of the jig 11.

[0078] That is, when the second housing 22 is pressed from the state shown in FIG. 11A toward the support base 110 of the jig 11, the rod-like bodies 11a to 11d each function as a guide, and the second housing 22 can be smoothly pushed down in the vertical direction. As a result, as shown in FIG. 11B, the protruding portions 91 press-fitted into the through holes 92 are easily detached, and the housing 2 is easily separated into the first housing 21 and the second housing 22.

[0079] Since the first housing 21 and the second housing 22 separated by such a method do not undergo deformation or the like, for example, after the analysis or maintenance inside the housing 2 is completed, the first housing 21 and the second housing 22 can be easily combined again.

[0080] According to the first embodiment described above, the rotating device 1 shown below is realized.

[0081] (1) A rotating device 1 includes a motor 3, gears (output gear 5 and transmission gear 6) for transmitting the rotation of the motor 3 to the outside, and a sensor 7. The sensor 7 includes a sensor unit 70 and a sensor housing 72 for housing the sensor unit 70. The rotation angle of the gears can be detected by the sensor 7. The gears are provided with recesses 50 in the rotation axis direction, and a part of the sensor housing 72 is accommodated in the recesses 50.

[0082] According to such a rotating device 1, since a part of the sensor housing 72 is accommodated in the gears, the rotating device 1 can be made thinner.

[0083] (2) In the above (1), the sensor unit 70 includes a conductive brush 75 and a sensor substrate 73 provided with a conductive part 730 electrically connected to the outside. The brush 75 is accommodated in a part of the sensor housing 72 that is accommodated in the recess 50 of the gear. The rotating device 1.

[0084] According to such a rotating device 1, while protecting the brush 75 and the sensor substrate 73 with the sensor housing 72, a part of the sensor housing 72 that houses the brush 75 that provides thickness in the height direction of the sensor 7 can be accommodated in the recess 50 of the gear, so it can greatly contribute to the thinning of the rotating device 1.

[0085] (3) In the above (2), a housing 2 for housing the motor 3, gears (output gear 5 and transmission gear 6), and the sensor housing 72 is provided. In the rotation axis direction of the gears, there is a brush 75 in a part of the sensor housing 72, and this brush 75 is arranged on the gear side with respect to the sensor substrate 73. The rotating device 1.

[0086] According to such a rotating device 1, the assembly of the sensor 7 becomes extremely easy, and thus the assemblability of the rotating device 1 is also improved.

[0087] (4) In the above (3), the housing 2 includes a first surface portion 210 of the housing 2 that serves as the bottom portion facing the gear in the rotational axis direction of the gear (output gear 5 or transmission gear 6), and a second surface portion 220 of the housing 2 that is the top surface portion facing the sensor housing 72. The sensor unit 70 holds one end of the brush 75 and includes a rotating plate 71 that rotates integrally with the gear. In the rotating device 1, the rotating plate 71, the brush 75, and the sensor substrate 73 are arranged in this order from the bottom side of the recess 50 of the gear.

[0088] According to such a rotating device 1, the assemblability of the sensor 7 and the assemblability of the rotating device 1 can be further improved.

[0089] (5) In the above (3) or (4), the sensor unit 70 includes a first connection terminal 74 having one end electrically connected to the sensor substrate 73 and the other end electrically connected to the outside. The other end of the first connection terminal 74 extends in a direction away from the bottom of the recess 50 of the gear (output gear 5 or transmission gear 6) in the rotating device 1.

[0090] According to such a rotating device 1, for example, it becomes possible to easily electrically connect the first connection terminal 74 and the outside using a connection member.

[0091] (6) In the above (5), a second connection terminal 40 electrically connected to the first connection terminal 74 is provided on the housing 2. One end of the other end of the first connection terminal 74 and one end of the second connection terminal 40 are electrically connected via a wiring board 8 in the rotating device 1.

[0092] According to such a rotating device 1, by attaching the wiring board 8 from above to the pre - arranged first connection terminal 74 and second connection terminal 40, it becomes possible to easily electrically connect the respective ends of the first connection terminal 74 and the second connection terminal 40, and the assemblability of the rotating device 1 can be improved.

[0093] (7) In the above (6), the wiring board 8 is a rotating device 1 formed of a flexible film.

[0094] According to such a rotating device 1, for example, even if vibration is applied, the flexible wiring board 8 can absorb the vibration, and even if the first connection terminal 74 and the second connection terminal 40 are electrically connected by soldering or the like, strong stress can be avoided from being applied to the connection portion between the first connection terminal 74 and the second connection terminal, and it is possible to avoid cracks, breakage, and disconnection from occurring in the connection portion.

[0095] (8) In any of the above (1) to (7), the gear in which the concave portion 50 is formed is the output gear 5, and it includes a transmission gear 6 that transmits the rotation of the motor 3 to the output gear 5. The transmission gear 6 is a multi-stage gear having a large-diameter portion (for example, the second large-diameter portion 622) to which the rotation from the motor 3 is transmitted and a small-diameter portion (for example, the second small-diameter portion 621) that extends from the second large-diameter portion 622 and transmits the rotation to the output gear 5. In the rotational axis direction, the second large-diameter portion 622 is arranged so as to partially overlap with the output gear 5, and a sensor housing 72 is arranged between the second large-diameter portion 622 and the output gear 5 in the rotating device 1.

[0096] According to such a rotating device 1, it is possible to reduce the thickness and size of the rotating device 1 while setting the rotation transmitted from the motor 3 to an appropriate reduction ratio.

[0097] Also, according to the first embodiment described above, furthermore, a rotating device 1 and a method for separating the housing 2 of the rotating device 1 shown below are realized.

[0098] (9) A housing 2 having opposing first housing 21 and second housing 22, a motor 3 housed in the housing 2, and gears (transmission gear 6 and output gear 5) that transmit the rotation of the motor 3 to the outside. A plurality of protruding portions 91 are provided on the first housing 21, and a plurality of through-holes 92 corresponding to the plurality of protruding portions 91 are provided on the second housing 22. A rotating device 1 in which the plurality of protruding portions 91 are fitted into the plurality of through-holes 92.

[0099] According to such a rotating device 1, the assembly and separation of the housing 2 that houses the motor 3, the transmission gear 6, the output gear 5, and the sensor 7 become extremely easy.

[0100] (10) In the above (9), the rotating device 1 in which at least two or more sets of a plurality of protruding portions 91 and a plurality of through holes 92 corresponding to each other are provided.

[0101] According to such a rotating device 1, the protruding portion 91 and the through hole 92 can be used as a reference for accurately positioning in the X and Y directions.

[0102] (11) In the above (9) or (10), the rotating device 1 in which two protruding portions 91 are press-fitted into the corresponding through holes 92 respectively.

[0103] According to such a rotating device 1, while accurately positioning, the rigidity of the housing 2 can be increased, and the generation of abnormal noise can be suppressed. Also, since the sound generated inside the rotating device 1 from the through hole 92 does not leak out, there is no risk of impairing the quietness.

[0104] (12) In any one of the above (9) to (11), the rotating device 1 in which the dimension of the through hole 92 is larger than the dimension of the protruding portion 91 in the direction in which the protruding portion 91 extends.

[0105] According to such a rotating device 1, for example, the first housing 21 and the second housing 22 can be easily separated using the jig 11.

[0106] (13) A method for separating a housing that separates the housing 2 in any one of the rotating devices 1 from the above (9) to (12) into a first housing 21 and a second housing 22, the method including a step of installing a jig 11 including rod-like bodies 11a to 11d corresponding to the plurality of through holes 92 respectively and a support base 110 provided with the rod-like bodies 11a to 11d, a step of inserting the plurality of rod-like bodies 11a to 11d into the plurality of through holes 92 formed in the second housing 22, and a step of pressing the second housing 22 in the direction of the support base 110 of the jig 11.

[0107] [Second Embodiment] Next, the rotating device 1 according to the second embodiment will be described with reference to the drawings. Note that the rotating device 1 according to the second embodiment and the rotating device 1 according to the above-described first embodiment have the same basic structure, and the same components are denoted by the same reference numerals, and the specific description thereof will be omitted.

[0108] FIG. 12 is a perspective view of the rotating device 1 according to the second embodiment with the first housing 21 removed, and FIG. 13 is an exploded perspective view of the rotating device 1 according to the second embodiment.

[0109] As shown in FIG. 12, the rotating device 1 according to the second embodiment also includes a motor 3, a transmission gear 6 and an output gear 5 that transmit the rotation of the motor 3 to the outside, a sensor 7, a first connection terminal 74 and a second connection terminal 40 that are electrically connected to the outside, a motor 3, a sensor 7, and a wiring board 80 that electrically connects the first connection terminal 74 and the second connection terminal 40. Further, the wiring board 80 is formed of a flexible film.

[0110] The rotation angle of the output gear 5 can be detected by the sensor 7, and an IC (Integrated Circuit) 300, which is an electronic component that controls the operation of the motor 3, is mounted on the wiring board 80.

[0111] Thus, the second embodiment is different from the rotating device 1 according to the first embodiment in that the IC 300 that controls the operation of the motor 3 is mounted on the flexible wiring board 80.

[0112] That is, in a conventional rotating device (for example, see Japanese Patent Application Laid-Open No. 2009-261130), an electronic component that controls the operation of a motor is mounted on a substrate. Therefore, since the position where the electronic component is arranged is limited, there is a risk of increasing the size of the rotating device depending on the position where the electronic component is arranged.

[0113] Therefore, in the rotating device 1 according to the present embodiment, an IC (Integrated Circuit) 300, which is an electronic component, is mounted on a flexible wiring board 80 formed of a film.

[0114] As shown in FIGS. 12 and 13, the IC 300 is mounted in a region located between a first connection terminal 74 and a second connection terminal 40 that are electrically connected to each other on the wiring board 80 and the motor 3. In other words, the IC 300 is mounted on a part of the wiring board 80 located between the first connection terminal 74 and the second connection terminal 40 and the motor 3.

[0115] Specifically, as shown in FIGS. 12 and 13, the wiring board 80 is configured to include three large planar portions 80a, 80b, and 80c. Such planar portions 80a, 80b, and 80c correspond to the first planar portion 81, the second planar portion 82, and the third planar portion 83 of the wiring board 8 shown in the first embodiment. Here, the first planar portion 80a and the third planar portion 80c have substantially the same width.

[0116] That is, the third planar portion 83 in the first embodiment served to connect the first planar portion 81 and the second planar portion 82. Here, however, the third planar portion 80c is continuously formed with substantially the same width as the first planar portion 80a, and the IC 300 is mounted on the surface of the third planar portion 80c having a sufficient width.

[0117] In this way, by using the wiring board 80 formed of a film, the degree of freedom in arranging the IC 300 is increased. Due to the increased degree of freedom, the IC 300 can be arranged by using the dead space in the housing 2, etc., and the rotating device 1 can be miniaturized or thinned by effectively using the available space.

[0118] Also, as described above, the rotating device 1 according to the second embodiment includes a housing 2 that houses a motor 3, a transmission gear 6, an output gear 5, a sensor 7, a first connection terminal 74 and a second connection terminal 40, and a wiring board 80. In the axial direction of the rotation axis of the output gear 5, the IC 300 is disposed at a position lower than the total height of the motor 3 within the housing 2. That is, by disposing the third flat portion 80c in an inclined state along the corner portion of the outer shell of the motor 3, the IC 300 is disposed at a position lower than the total height of the motor 3. The corner portion of the motor 3 where the third flat portion 80c is disposed faces upward (the first housing 21) and is curved.

[0119] Here, the total height of the motor 3 in the axial direction of the rotation axis of the output gear 5 refers to a part of the motor 3 at the highest position (for example, a part of the side surface at the highest position among the side surfaces of the outer shell (frame) facing the first surface portion 210 which is the top surface portion of the first housing 21) with reference to the surface portion 220 of the housing 2 in contact with the motor 3, that is, the bottom portion of the second housing 22 (see FIGS. 1 and 3).

[0120] Also, the IC 300 is in contact with the motor 3 via the wiring board 80. Moreover, in the present embodiment, the third flat portion 80c which is a part of the wiring board 80 is fixed to the outer shell of the motor 3. Here, the third flat portion 80c of the wiring board 80 is fixed to the outer shell of the motor 3 using a double-sided tape or the like.

[0121] Conventionally, in order to prevent damage to electronic components due to external vibration, for example, an electronic component is mounted on a wiring board made of hard glass epoxy, and a region for fixing the wiring board made of glass epoxy is secured within the housing, and it is necessary to firmly fix this wiring board to the housing.

[0122] However, in that case, the rotating device becomes large-sized. Therefore, in the rotating device 1 according to the present embodiment, since the wiring board 8 is formed of a flexible film, it can be easily fixed to the outer shell of the motor 3 even with a double-sided tape or the like.

[0123] As described above, in the rotating device 1 according to the present embodiment, since the degree of freedom in arranging electronic components such as the IC 300 that controls the operation of the motor 3 is increased, it is possible to reduce the size or thickness while saving space within the housing 2.

[0124] According to the above-described second embodiment, the following rotating device 1 is realized.

[0125] (14) A rotating device 1 including a motor 3, gears (transmission gear 6 and output gear 5) that transmit the rotation of the motor 3 to the outside, a sensor 7, connection terminals (first connection terminal 74 and second connection terminal 40) that are electrically connected to the outside, a wiring board 80 that electrically connects the motor 3, the sensor 7, and the connection terminals (first connection terminal 74 and second connection terminal 40), the rotation angle of the output gear 5 being detectable by the sensor 7, an IC 300 as an electronic component that controls the operation of the motor 3 being mounted on the wiring board 80, and the wiring board 80 being formed of a flexible film.

[0126] According to such a rotating device 1, since the degree of freedom in arranging electronic components such as the IC 300 is increased, it is possible to reduce the size or thickness while saving space within the housing 2.

[0127] (15) In the above (14), the IC 300 as an electronic component is mounted in a region located between the connection terminals (first connection terminal 74 and second connection terminal 40) on the wiring board 80 and the motor 3 in the rotating device 1.

[0128] According to such a rotating device 1, the IC 300 can be arranged in a suitable space within the housing 2, and the housing 2 can be made thinner or smaller more reliably.

[0129] (16) In (14) or (15) above, a housing 2 is provided that houses a motor 3, gears (transmission gear 6 and output gear 5), a sensor 7, connection terminals (first connection terminal 74 and second connection terminal 40), and a wiring board 80. In the rotational axis direction of the output gear 5, the IC 300 is a rotating device 1 disposed at a position lower than the total height of the motor 3 within the housing 2.

[0130] According to such a rotating device 1, thinning or miniaturization of the housing 2 can be more surely achieved.

[0131] (17) In any of (14) to (16) above, an electronic component such as the IC 300 is a rotating device 1 that contacts the motor 3 via the wiring board 80.

[0132] According to such a rotating device 1, while increasing the degree of freedom in arranging electronic components such as the IC 300, they can be arranged stably within the housing 2.

[0133] (18) In any of (14) to (17) above, a part of the wiring board 80 is a rotating device 1 fixed to the outer shell of the motor 3.

[0134] According to such a rotating device 1, electronic components such as the IC 300 can be easily fixed within the housing 2 while increasing the degree of freedom in their arrangement.

[0135] [Third Embodiment] Next, the rotating device 1 according to the third embodiment will be described with reference to the drawings. Note that the rotating device 1 according to the third embodiment and the rotating devices 1 according to the first and second embodiments described above have the same basic structure, and the same reference numerals are assigned to the same components, and specific descriptions thereof are omitted.

[0136] FIG. 14 is a plan view with the first housing 21 of the rotating device 1 according to the third embodiment removed. FIG. 15 is an exploded perspective view of the rotating device 1 according to the third embodiment.

[0137] As shown in FIGS. 14 and 15, the rotating device 1 according to the third embodiment also includes a housing 2, a motor 3, transmission gears 6 and an output gear 5 for transmitting the rotation of the motor 3 to the outside, a sensor 7, and a first connection terminal 74 and a second connection terminal 40 that are electrically connected to the outside. Further, it includes a wiring board 80 that electrically connects the motor 3, the sensor 7, the first connection terminal 74, and the second connection terminal 40. And the rotation angle of the output gear 5 can be detected by the sensor 7.

[0138] Also, similar to the rotating device 1 according to the second embodiment, an electronic component, an IC 300, is mounted on a flexible wiring board 800 formed of a film. The difference is that the IC 300 is held by the housing 2. That is, the rotating device 1 according to the third embodiment mounts the IC 300 on the wiring board 800 and still holds this IC 300 by the housing 2.

[0139] That is, in the conventional rotating device (for example, Japanese Patent Application Laid-Open No. 2009-261130) described above, etc., there is a risk that the electronic component IC 300 may be damaged or the solder connecting the IC 300 may peel off due to, for example, vibration from the outside.

[0140] Therefore, in the rotating device 1 according to the present embodiment, the electronic component IC 300 mounted on the flexible wiring board 800 formed of a film is further held by the housing 2.

[0141] Specifically, as shown in FIGS. 14 and 15, a space (hereinafter referred to as a holding space) 225 for holding the IC 300 is formed in a second housing 22 that constitutes the housing 2, and a plurality of holding portions 230 for holding the electronic component IC 300 are provided in such holding space 225.

[0142] Thus, since the IC 300 mounted on the wiring board 800 is configured to be held by the housing 2, damage to the IC 300 can be suppressed. Also, even when vibration is applied, since the flexible wiring board 800 absorbs the vibration, peeling of solder or the like that connects the wiring to the IC 300 can be suppressed. Therefore, the electrical connection between the IC 300 and the wiring board 800 can be maintained.

[0143] As the plurality of holding portions 230, as shown in the drawing, the convex portion 227 protruding from the inner wall surface of the housing 2 (the second housing 22) is included. It is preferable that the tip of such a convex portion 227 has a rounded shape or is provided with a flexible material so as not to damage the surface of the IC 300. Also, if the IC 300 can be held in cooperation with other members, the inner wall surface of the housing 2 itself is also included in the holding portion 230.

[0144] Also, among the plurality of holding portions 230, one or two or more holding portions are a part of the housing 2 (the second housing 22), and the IC 300 is elastically held by the housing 2 by one or two or more holding portions.

[0145] Also, as one of the holding portions 230, in the present embodiment, a pair of members (hereinafter referred to as clamping members) 810, 810 that can clamp the IC 300 from both sides are provided. Such clamping members 810 are formed of an elastic member having more elasticity than the members forming the other holding portions 230 such as the inner wall surface of the housing 2 and the convex portion 227 described above. Here, the clamping members 810, 810 are formed of leaf springs.

[0146] In order to position the IC 300 in the holding space 225, the wiring board 800 in the present embodiment is provided with a component mounting surface 830 on a part of the third flat portion 80c of the wiring board 80 used in the second embodiment. The component mounting surface 830 extends laterally from the third flat portion 80c of the wiring board 800 and is bent so as to fit into the holding space 225 for holding the IC 300 by utilizing its flexible characteristics.

[0147] As described above, in the rotating device 1 according to this embodiment, the IC 300, which is an electronic component, is sandwiched between a plurality of holding portions, that is, the convex portion 227 formed on the inner wall surface of the housing 2 and the sandwiching member 810.

[0148] Therefore, damage to the IC 300 can be suppressed, or the electrical connection between the IC 300 and the wiring board 800 can be maintained.

[0149] According to the above-described third embodiment, the rotating device 1 shown below is realized.

[0150] (19) A rotating device 1 including a housing 2, a motor 3, a gear (transmission gear 6 and output gear 5) that transmits the rotation of the motor 3 to the outside, a sensor 7, connection terminals (first connection terminal 74 and second connection terminal 40) that are electrically connected to the outside, a motor 3, a sensor 7, and a wiring board 800 that electrically connects the connection terminals (first connection terminal 74 and second connection terminal 40), wherein the rotation angle of the output gear 5 can be detected by the sensor 7, and an IC 300, which is an electronic component that controls the operation of the motor 3, is mounted on the wiring board 800, and the IC 300 is held by the housing 2.

[0151] According to such a rotating device 1, damage to the IC 300 can be suppressed, or the electrical connection between the IC 300 and the wiring board 800 can be maintained.

[0152] (20) In the above (19), the rotating device 1 in which the wiring board 800 is formed of a flexible film.

[0153] According to such a rotating device 1, the degree of freedom in the arrangement of the IC 300 is increased, so that damage to the IC 300 can be suppressed and the electrical connection between the IC 300 and the wiring board 800 can be maintained.

[0154] (21) In the above (19) or (20), the rotating device 1 in which the IC 300, which is an electronic component, is electrically connected to the connection terminals (first connection terminal 74 and second connection terminal 40) via the wiring board 800.

[0155] According to such a rotating device 1, further, since vibrations from the outside can be absorbed by the wiring board 800, it becomes possible to prevent the peeling of the solder connecting the IC 300 and the wiring.

[0156] (22) In any one of (19) to (21) above, the housing 2 is a rotating device 1 including a plurality of holding portions 230 that hold the IC 300.

[0157] According to such a rotating device 1, it becomes possible to hold the IC 300 more reliably.

[0158] (23) In (22) above, the plurality of holding portions 230 are the rotating device 1 including the inner wall surface of the housing 2 or a convex portion 227 protruding from the inner wall surface.

[0159] According to such a rotating device 1, it becomes possible to hold the IC 300 more reliably.

[0160] (24) In (22) or (23) above, one of the plurality of holding portions 230 is a rotating device 1 formed of an elastic member (clamping member 810) having more elasticity than the member forming the other holding portions 230.

[0161] According to such a rotating device 1, the transmission of vibrations to the IC 300 can be further reduced.

[0162] (25) In (22) or (23) above, among the plurality of holding portions 230, one or two or more holding portions 230 are a part of the housing 2 (second housing 22), and the IC 300 is elastically held by the housing 2 (second housing 22) by one or two or more holding portions 230. The rotating device 1.

[0163] (26) In any one of (22) to (25) above, the IC 300 is a rotating device 1 clamped by a plurality of holding portions 230.

[0164] According to such a rotating device 1, the IC 300 can be protected more reliably.

[0165] By the way, from the first embodiment to the third embodiment described above, as the connection terminals, two terminals, namely, the linear first connection terminal 74 and the second connection terminal 40 having the shape shown in FIG. 3, were used.

[0166] That is, the first connection terminal 74 includes one end connected to the sensor 7 and the other end electrically connected to the outside, and the second connection terminal 40 is electrically connected to the first connection terminal 74 directly or via another member.

[0167] In this way, since the configuration includes the linear first connection terminal 74 whose other end is connected to the outside, and the second connection terminal 40 connected to the first connection terminal 74 via connection members such as wiring boards 8, 80, 800, etc., the degree of freedom in designing the housing 2 of the rotating device 1 is increased, and it has been possible to reduce the size of the housing 2.

[0168] On the other hand, regarding the second connection terminal 40 from the first embodiment to the third embodiment described above, the one having the shape shown in FIG. 3, that is, for example, the one formed into a predetermined shape by punching out from a metal plate material, was used.

[0169] However, the second connection terminal can be the one having the configuration shown below instead of the one described above.

[0170] [Modification Example] FIG. 16 is an explanatory diagram showing the connector portion 200 of the rotating device 1 according to the modification example. FIG. 17 is a perspective view of the second connection terminal provided in the connector portion 200 of the rotating device 1 according to the modification example. Further, FIG. 18 is an explanatory diagram in a cross-sectional view showing the positional relationship between the second connection terminal and the sensor housing 72 as described above.

[0171] As shown in FIGS. 16 and 17, the second connection terminal 400 according to the modified example is formed of a rod-shaped member having a square cross-sectional shape, and has a bent portion 420 formed on one end side and an extending portion (a part of the second connection terminal 400) 410 linearly extending from the bent portion 420 to the other end. The other end of the second connection terminal 400 (hereinafter referred to as the tip of the extending portion 410) 401 and one end of the second connection terminal 400 (hereinafter referred to as the tip on the bent portion 420 side) 402 are both in a substantially square pyramid shape that tapers slightly. In the second connection terminal 400, since the extending portion 410 is at an intermediate position between one end 402 and the other end 401, the extending portion is also an intermediate portion.

[0172] Further, as shown in FIG. 16, the bent portion 420 extends in a direction away from the bottom surface of the housing 2, that is, the second housing 22. On the other hand, as shown in FIGS. 7A and 7B, a bent portion 74a is formed on the other end side of the first connection terminal 74, and the tip on the bent portion 74a side extends in a direction away from the second surface portion 220 forming the bottom surface of the second housing 22. That is, the tip 402 on the bent portion 420 side of the second connection terminal 400 extends in the same direction as the tip of the first connection terminal 74.

[0173] Therefore, by connecting the end on the bent portion 74a side of the first connection terminal 74 and the end on the bent portion 420 side of the second connection terminal 400 using the flexible wiring boards 8, 80, 800 formed of a flexible film, the first connection terminal 74 and the second connection terminal 400 can be easily connected. Also, as described in the previous embodiments, by using the wiring boards 8, 80, 800, the motor 3 and the second connection terminal 400 can also be electrically connected.

[0174] Incidentally, as shown in FIG. 18, the bent portion 420 of the second connection terminal 400 is close to the sensor housing 72 to such an extent that it has a predetermined gap d. This gap d is extremely small in this embodiment. Also, in the direction from the first connection terminal 74 toward the second connection terminal 400, the bent portion 420, the other end portion of the first connection terminal 74, and the sensor housing 72 are arranged side by side and adjacent to each other.

[0175] Since such a configuration can be realized, for example, unlike a conventional rotating device (see, for example, Japanese Unexamined Patent Application Publication No. 2013-5512) in which the length of the connection terminal extending from the sensor is preset to a predetermined length, the degree of design freedom including the size of the housing 2 does not decrease, and it is possible to contribute to the miniaturization of the housing 2 and thus the miniaturization of the rotating device 1.

[0176] Also, as shown in FIG. 17, a flange portion 430 is provided in the vicinity of the bent portion 420 in the extending portion 410 of the second connection terminal 400. On the other hand, as shown in FIG. 16, a predetermined number (here, five) of recesses 202 for arranging the flange portion 430 of the second connection terminal 400 in a housed state are provided in the holding portion 201 provided in the connector portion 200 formed in the housing 2. And the second connection terminal 400 is held in a state where the flange portion 430 is inserted into such a recess 202. Therefore, the second connection terminal 400 is firmly held by the housing 2.

[0177] By using the second connection terminal 400 according to the above-described modification, the rotating device 1 shown below is realized.

[0178] (27) A rotating device 1 comprising a motor 3, gears (transmission gear 6 and output gear 5) for transmitting the rotation of the motor 3 to the outside, a sensor 7, a plurality of linear connection terminals (for example, the first connection terminal 74 and the second connection terminal 400), gears (transmission gear 6 and output gear 5), a sensor 7, and a housing 2 for housing the connection terminals (for example, the first connection terminal 74 and the second connection terminal 400). The rotation angle or rotation speed of the output gear 5 can be detected by the sensor 7. Among the plurality of connection terminals, one connection terminal 74 has one end connected directly or via another member to the sensor 7 and the other end electrically connected to the outside. The other connection terminal 40 has one end 402 connected directly or via another member to the motor 3 and the other end 401 electrically connected to the outside.

[0179] Alternatively, a rotating device 1 comprising a motor 3, gears (transmission gear 6 and output gear 5) for transmitting the rotation of the motor 3 to the outside, a sensor 7 for detecting the rotation angle of the output gear 5, a linear first connection terminal 74, and a second connection terminal 400. The first connection terminal 74 has one end connected to the sensor 7 and the other end electrically connected to the outside. The second connection terminal 400 is electrically connected directly or via another member to the first connection terminal 74. Further, the second connection terminal 400 has a bent portion 420 formed on one end side and an extending portion 410 which is a part extending linearly from the bent portion 420 to the other end (tip 401).

[0180] According to such a rotating device 1, the degree of freedom in designing the housing 2 in the rotating device 1 is increased, and it becomes possible to reduce the size of the housing 2.

[0181] (28) In the above (27), the rotating device 1 in which the other member is a wiring board.

[0182] According to such a rotating device 1, it is possible to use the conventional product as it is without newly preparing a dedicated connection member, and the cost can be reduced.

[0183] (29) In the above (27) or (28), a rotating device 1 having a flange portion 430 at an intermediate portion between one end portion 402 and the other end portion 401 among a plurality of connection terminals 400.

[0184] According to such a rotating device 1, the strength of the linear second connection terminal 400 can be improved.

[0185] (30) In the above (29), a recess 202 is provided in the housing 2, and a rotating device 1 in which the flange portion 430 of the plurality of connection terminals 400 is engaged with the recess 202.

[0186] According to such a rotating device 1, the second connection terminal 400 can be reliably held by the housing 2.

[0187] (31) In the above (30), a rotating device 1 having a bent portion 420 between the flange portion 430 and one end portion 402.

[0188] According to such a rotating device 1, for example, using a predetermined connection member such as wiring boards 8, 80, 800, etc., the bent portion 74a of the first connection terminal 74 and the bent portion 420 of the second connection terminal 400 can be easily connected, and the first connection terminal 74 and the second connection terminal 400 can also be easily electrically connected.

[0189] (32) In the above (28) to (31), a rotating device 1 in which the wiring board is formed of a flexible film.

[0190] According to such a rotating device 1, while exhibiting the above-described advantages, vibrations from the outside and the like can be absorbed by the wiring boards 8, 80, 800, so that it is possible to prevent peeling of the solder connecting the first connection terminal 74 and the second connection terminal 400 to the wiring boards 8, 80, 800.

[0191] (33) In the above (28) to (32), a rotating device 1 in which the sensor 7 includes a sensor substrate 73 having a conductive portion 730, and the wiring boards 8, 80, 800 and the substrate 73 are electrically connected.

[0192] According to such a rotating device 1, for example, the wiring boards 8, 80, 800 and the conductive part 730 of the sensor board 73 can be directly and electrically connected without passing through connection terminals 74 or the like.

[0193] (34) In the above (28) to (32), the sensor 7 includes a sensor board 73, a first connection terminal 74 electrically connected to the sensor board 73, and the first connection terminal 74 and the wiring boards 8, 80, 800 are electrically connected, the rotating device 1.

[0194] According to such a rotating device 1, for example, the sensor board 73 and the first connection terminal 74 can be packaged to provide a sensor 7 that is easy to handle.

[0195] Further, by using the second connection terminal 400 according to the modification, the rotating device 1 shown below is realized.

[0196] (35) In the above (31), the bent portion 420 extends in a direction away from the bottom of the housing 2 (the second surface portion 220 forming the bottom wall of the second housing 22), the rotating device 1.

[0197] According to such a rotating device 1, a predetermined connecting member can be used to easily connect the bent portion 74a of the first connection terminal 74 and the bent portion 420 of the second connection terminal 400, and the first connection terminal 74 and the second connection terminal 400 can also be easily electrically connected.

[0198] (36) In any of the above (27) to (35), the sensor 7 includes a sensor housing 72, and in the direction from the first connection terminal 74 to the second connection terminal 400, the bent portion 420 of the second connection terminal 400, the other end of the first connection terminal 74, and the sensor housing 72 are arranged side by side, the rotating device 1.

[0199] According to such a rotating device 1, as a result, the sensor housing 72 and the second connection terminal 400 can be made as close as possible to each other, which can contribute to the miniaturization of the housing 2 and thus the miniaturization of the rotating device 1.

[0200] As described above, the present invention has been described based on each embodiment. However, it goes without saying that the present invention is not limited to each embodiment, and various modifications can be made without departing from the gist of the present invention. Those that have made various modifications without departing from such a gist 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.

[0201] In each embodiment, the rotation angle of the gear can be detected by the sensor unit, but it is not limited thereto. The rotation angle and / or the rotation speed of the gear may be detectable by the sensor unit.

[0202] In each embodiment, the wiring formed on the wiring board and the conductive portion formed on the substrate of the sensor (sensor substrate) may be electrically connected by a known method such as soldering without passing through the connection terminal. Further, the wiring board and the sensor substrate may be fixed with resin or the like, so that the wiring of the wiring board and the conductive portion of the sensor substrate may be in contact with each other and electrically connected without passing through the connection terminal.

Explanation of reference numerals

[0203] 1 Rotating device, 2 Housing, 3 Motor, 4 Worm gear, 5 Output gear, 6 Transmission gear, 7 Sensor, 8, 80, 800 Wiring board, 21 First housing, 22 Second housing, 23, 24, 25, 26 Mounting part, 40 Second connection terminal, 40a Piece, 70 Sensor part, 72 Sensor housing, 73 Sensor board, 75 Brush, 91 Protrusion, 92 Through hole, 210 First face part, 211 First side wall part, 220 Second face part, 222 Second side wall part, 224 Engaging protrusion, 212 Engaging part, 213, 223 Protrusion, 200 Connector part, 100 Air conditioning system, 101 Blower fan, 102 Evaporator, 103 Heater, 104 Louver, 104a Drive shaft, 74 First connection terminal, 74a Bent part, 61 First transmission gear, 62 Second transmission gear, 51 Output shaft, 30 Main body part, 31 Rotation shaft, 33 Terminal, 611 First large diameter part, 612 First small diameter part, 621 Second small diameter part, 622 Second large diameter part, 50 Recess, 52 Tooth row, 53 Bottom wall, 72a First side part, 72b Second side part, 723 First circular hole, 711 Boss part, 712 Fitting hole, 721 Rectangular hole, 730 Conductive part, 73a Circular part, 73b Square part, 733 Second circular hole, 735 Hole part, 731 Output part, 732 Resistance part, 751, 752 Contact point, 734a Lead-out part, 734b First lead-out part, 734c Second lead-out part, 201 Holding part, 81 First flat part, 82 Second flat part, 83 Third flat part, 11a~11d Rod-shaped body, 11 Fixture, 110 Support base, 300 IC, 80a First flat part, 80c Third flat part, 80b Second flat part, 225 Holding space, 230 Holding part, 227 Convex part, 810 Clamping member, 830 Component mounting surface, 400 Second connection terminal, 420 Bending part, 410 Extending part, 401, 402 Tip

Claims

1. A motor having a terminal, a frame having a bottom surface portion and a top surface portion in the rotation axis direction, and a rotation axis, a worm gear, a gear meshing with the worm gear, a sensor, a wiring board for electrically connecting the motor to the outside, electronic components mounted on the wiring board, a housing for housing the motor, the wiring board, and the electronic components, comprising: In the rotation axis direction, the terminal is provided on the bottom surface portion of the frame, The worm gear is mounted on a part of the rotation axis protruding from the top surface portion of the frame, The wiring board is formed of a flexible film, The electronic components are held by the housing, The housing includes a side wall portion, a space for holding the electronic components, and one or more holding portions provided in the space, The space is on the side wall portion side with respect to the holding portion, A rotating device.

2. The electronic components are electrically connected to the terminals of the motor via the wiring board, The rotating device according to Claim 1.

3. The wiring board on which the electronic components are mounted is bent, The rotating device according to Claim 1 or 2.

4. The wiring board includes a component mounting surface on which the electronic components are mounted, The rotating device according to any one of Claims 1 to 3.

5. The wiring board is bent, The component mounting surface is disposed in the space, The rotating device according to Claim 4.

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