Rotary apparatus

Abstract

To facilitate assembly and separation of a housing of a rotary apparatus.SOLUTION: A rotary apparatus has a housing formed by a first housing and a second housing. On a lateral face of the first housing, an engagement part and a projecting part are formed. On a lateral face of the second housing, an engaged part engaging with the engagement part and the projecting part are formed. The projecting part of the first housing and the projecting part of the second housing are arranged at positions adjacent to each other in a circumferential direction and in a direction from the first housing to the second housing.SELECTED DRAWING: Figure 26

Description

[Technical field]

[0001] The present invention relates to rotating equipment. [Background technology]

[0002] In a rotating device such as a gearbox with a motor, there is known a technique for joining two housings facing each other. When joining the housings, for example, a technique is known in which a hook provided on one housing is engaged with a protrusion or the like provided on the other housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication number 3-27312 [Patent Document 2] Japanese Patent Application Publication No. 9-326192 Summary of the Invention [Problem to be solved by the invention]

[0004] When the hook and the protrusion are engaged, it becomes difficult to separate the two joined housings. For example, when a large number of rotating devices need to be disassembled on a production line, the labor costs increase.

[0005] One aspect of the present invention aims to facilitate assembly and disassembly of a housing for a rotating device. [Means for solving the problem]

[0006] In one aspect, a rotating device includes a housing formed of a first housing and a second housing. An engaging portion and a protrusion are formed on a side surface of the first housing. An engaged portion and a protrusion that engages with the engaging portion are formed on a side surface of the second housing. The protrusion of the first housing and the protrusion of the second housing are disposed at positions adjacent to each other in a circumferential direction and in a direction from the first housing to the second housing.

[0007] According to one aspect, the housing of a rotating device can be easily assembled and disassembled. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view illustrating an example of a rotating device according to a first embodiment. [Diagram 2] FIG. 2 is a plan view of the rotating device according to the first embodiment with a first housing removed. [Diagram 3] FIG. 3 is a perspective view illustrating an example of the first housing in the first embodiment. [Figure 4] FIG. 4 is a perspective view illustrating an example of the second housing in the first embodiment. [Diagram 5] FIG. 5 is a cross-sectional perspective view illustrating an example of a housing in the first embodiment. [Figure 6] FIG. 6 is an exploded perspective view illustrating an example of the motor and the motor housing of the second housing in the first embodiment. [Figure 7] FIG. 7 is another exploded perspective view showing an example of the motor and the motor accommodating portion of the second housing in the first embodiment. [Figure 8] FIG. 8 is an enlarged cross-sectional view showing an example of the second housing in the first embodiment. [Figure 9] FIG. 9 is an enlarged cross-sectional view illustrating the positional relationship between the first end portion and the first wall in the first embodiment. [Figure 10] FIG. 10 is a perspective view showing an example of the first transmission gear in the first embodiment. [Figure 11] FIG. 11 is a cross-sectional perspective view illustrating an example of a rotating device according to the first embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of a sensor attached to an output gear in the first embodiment. [Figure 13] FIG. 13 is a plan view showing an example of a conductor of the sensor in the first embodiment. [Figure 14] FIG. 14 is an enlarged cross-sectional view showing an example of a conductor of the sensor in the first embodiment. [Figure 15] FIG. 15 is another enlarged cross-sectional view showing an example of a conductor of the sensor in the first embodiment. [Figure 16] FIG. 16 is a perspective view illustrating an example of a rotating device according to the second embodiment. [Figure 17] FIG. 17 is an exploded perspective view illustrating an example of a rotating device according to the second embodiment. [Figure 18] FIG. 18 is a partial cross-sectional perspective view showing an example of the second housing in the second embodiment. [Figure 19] FIG. 19 is a perspective view illustrating an example of an internal structure of a rotating device according to the second embodiment. [Figure 20] FIG. 20 is a diagram showing an example of an assembly process of the internal structure in the second embodiment. [Figure 21] FIG. 21 is a diagram showing an example of a sensor attached to an output gear in the second embodiment. [Figure 22] FIG. 22 is a plan view showing an example of a conductor of the sensor in the second embodiment. [Figure 23] FIG. 23 is an enlarged cross-sectional view showing an example of a conductor of the sensor in the second embodiment. [Figure 24] FIG. 24 is a side cross-sectional view illustrating an example of a rotating device according to the second embodiment. [Diagram 25] FIG. 25 is another cross-sectional side view showing an example of a rotating device according to the second embodiment. [Figure 26] FIG. 26 is a perspective view illustrating an example of a separation step of the housing in the second embodiment. [Figure 27] FIG. 27 is a cross-sectional perspective view illustrating an example of a separation step of the housing in the second embodiment. [Figure 28] FIG. 28 is a side cross-sectional view showing an example of a process for disassembling the housing in the second embodiment. [Figure 29] FIG. 29 is another cross-sectional side view showing an example of a process for disassembling the housing in the second embodiment. [Diagram 30]FIG. 30 is a cross-sectional perspective view showing an example of a housing after separation in the second embodiment. [Diagram 31] FIG. 31 is a perspective view showing an example of a first transmission gear in the first modified example. [Diagram 32] FIG. 32 is a plan view showing an example of a conductor of the sensor in the second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The rotating device disclosed in the present application will be described in detail below with reference to the drawings. The dimensional relationship of each element in the drawings, the ratio of each element, etc. may differ from reality. The drawings may also include parts with different dimensional relationships and ratios. In order to make the description easier to understand, each drawing may show a coordinate system in which the direction in which a rotating shaft 31 of a motor 3 described later extends is the X-axis direction, and the direction in which an output shaft 51 described later that is perpendicular to the rotating shaft 31 extends is the Z-axis direction. The same components are denoted by the same reference numerals throughout the description of the embodiment.

[0010] [First embodiment] First, the rotating device in the first embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing an example of the rotating device in the first embodiment, FIG. 2 is a plan view of the rotating device in the first embodiment with the first housing removed, FIG. 3 is a perspective view explaining an example of the first housing in the first embodiment, FIG. 4 is a perspective view explaining an example of the second housing in the first embodiment, and FIG. 5 is a cross-sectional perspective view showing an example of the housing in the first embodiment. FIG. 5 shows a cross section cut along a plane S1 in FIG. 1. Note that FIG. 5 shows a state in which the first housing 21 and the second housing 22 are joined, and the internal structure of the rotating device 1 shown in FIG. 2 is not shown. Note that in each drawing, the detailed internal structure of the housing 2 may be omitted.

[0011] The rotating device 1 according to the first embodiment can be suitably used as an actuator for use in, for example, an air conditioning system for a vehicle, and can control the rotational movement of a louver for controlling the amount of airflow or the like.

[0012] 1 and 5, the housing 2 includes a first housing 21 and a second housing 22 that engages with the first housing 21. The first housing 21 and the second housing 22 face each other in the Z-axis direction. That is, the housing 2 is configured by connecting the first housing 21 having an opening 212 shown in Fig. 3 and the second housing 22 having an opening 222 shown in Fig. 4 in a state in which the openings 212, 222 face each other in the Z-axis direction.

[0013] 2, the rotating device 1 includes therein a motor 3, a plurality of gears (hereinafter referred to as a gear group) 6 that transmit power from the motor 3, a sensor 7 that detects the rotation angle of an output gear 50 included in the gear group 6, and the like.

[0014] As shown in Fig. 2, the motor 3 in the first embodiment has a rotating shaft 31 and a frame 30 having a first end 330 and a second end 340 extending in the direction of the rotating shaft. The gear group 6 includes a worm 10 attached to the rotating shaft 31 of the motor 3, a first transmission gear 600, a second transmission gear 62, and an output gear 50. Instead of the gear group 6, the rotating device 1 may be configured to include a single gear. As shown in Fig. 2, the first transmission gear 600 is located on the positive side in the Y-axis direction with respect to the worm 10.

[0015] As shown in Figs. 6 and 7, the first end 330 of the motor 3 includes a protruding portion 331 extending in the direction of the rotation axis, and the second end 340 includes an annular end face (surface) 349 surrounding the rotation axis 31. Fig. 6 is an exploded perspective view showing an example of the motor and the motor housing of the second housing in the first embodiment. Fig. 7 is another exploded perspective view showing an example of the motor and the motor housing of the second housing in the first embodiment. Note that the rotation axis 31 and the worm 10 are omitted from Fig. 7. The annular end face 349 of the second end 340 is formed on the radially outer side of the protruding portion 342 through which the rotation axis 31 is inserted.

[0016] As shown in FIG. 5, the first housing 21 has a surface portion 210 which is the top surface of the housing 2, and a side wall portion 211 provided on the outer periphery of the surface portion 210. The opening 212 is surrounded by the side wall portion 211. On the other hand, as shown in FIG. 5, the second housing 22 has a surface portion 220 which is the bottom surface of the housing 2, and a side wall portion 221 provided on the outer periphery of the surface portion 220. The opening 222 is surrounded by the side wall portion 221. As shown in FIG. 3, the opening 212 is formed with a housing portion 250 in which the motor 3 shown in FIG. 2 is housed, and the opening 222 is formed with a housing portion 500 as shown in FIG. 4. The housing 2 is formed of an elastic or deformable resin material such as polypropylene, polyethylene terephthalate, ABS, polycarbonate, etc.

[0017] 4, the accommodation section 500 of the second housing 22 includes a first wall 530, a second wall 540, and a side wall 550. The side wall 550 extends in the X-axis direction and is formed so as to cover the motor 3 from the negative side in the Z-axis direction. The first wall 530 and the second wall 540 extend in the Z-axis direction, i.e., in a direction intersecting with the side wall 550.

[0018] 7 and 8, in the rotation axis direction, the first wall 530 has a rib (hereinafter referred to as a triangular rib) 538 that contacts the protruding portion 331 of the frame 30, and the second wall 540 has a protruding portion 549 that contacts the annular end face (face) 349 of the frame 30. FIG. 8 is an enlarged cross-sectional view showing an example of the second housing in the first embodiment. FIG. 8 shows a cross section of the second housing 22 cut along the plane S2 in FIG. 1. The triangular rib 538 is an example of a protrusion that the first wall has, and the protruding portion 549 is an example of a protrusion that the second wall has.

[0019] In the first wall 530, the triangular rib 538 is formed in a recess 531 that protrudes from the side wall 550 by a width W1 toward the positive side in the Z axis direction, as shown in FIG. 8. In this case, as shown in FIG. 9, in the rotation axis direction, the other part 534 of the first wall 530 is on the motor 3 side with respect to the recess 531 of the first wall 530 having the triangular rib 538. FIG. 9 is an enlarged cross-sectional view for explaining the positional relationship between the first end and the first wall in the first embodiment. FIG. 9 shows a cross section cut by the plane S2 in FIG. 1. The recess 531 is an example of a part of the first wall. According to this configuration, a narrow space is formed between the other part 534 of the first wall 530 and the first end 330 of the motor 3, so that the propagation of vibration can be suppressed even if the first end 330 of the motor 3 comes into contact with the other part 534 of the first wall 530. Furthermore, by narrowing the space, the rigidity of the side portion of the housing 2 constituting the other portion 534 of the first wall 530 can be increased to suppress the propagation of vibration and reduce the dead space. Similarly, in the second wall 540, the protruding portion 549 is formed in a protruding portion (hereinafter referred to as a standing portion) 546 that protrudes from the side wall 550 in the positive direction in the Z axis, as shown in FIG.

[0020] As shown in Fig. 8, the triangular rib 538 protrudes in the negative direction on the X-axis from a surface 531a of the recess 531 that is parallel to the protruding portion 331 of the frame 30. Also, as shown in Fig. 6, the protruding portion 549 protrudes in the positive direction on the X-axis from the standing portion 546. Note that the portion of the first wall 530 other than the recess 531 may be referred to as a bottom portion 534, and the portion of the second wall 540 other than the standing portion 546 may be referred to as a bottom portion 544.

[0021] The first end 330 and the second end 340 are formed in a direction intersecting with an outer peripheral side surface 350 of the frame 30 as shown in Fig. 6. In the first embodiment, the end of the rotating shaft 31 on the positive side in the X-axis direction is supported by a protruding portion 331 of the frame 30 shown in Fig. 6, and the end of the rotating shaft 31 on the negative side in the X-axis direction protrudes from a protruding portion 342 of the second end 340 of the frame 30 and is housed in the worm 10.

[0022] The end of the worm 10 on the negative side in the X-axis direction may be configured to come into contact with a recess 260 formed in the second housing 22, as shown in Fig. 6. In this case, the first housing 21 may have a notch 279 as a recess at a position opposing the recess 260 in the Z-axis direction, as shown in Fig. 3.

[0023] As shown in Fig. 6, a first end 330 of a frame 30 of a motor 3 has an annular end surface 332 surrounding a protruding portion 331. A pair of terminals 36 are formed on the annular end surface 332 so as to protrude in the positive direction along the X-axis. The pair of terminals 36 are each supported by a second protruding portion 336 formed on the annular end surface 332. As will be described later, the pair of terminals 36 are electrically connected to terminals 4d and 4e, respectively, via an FPC 8 shown in Fig. 2.

[0024] In this case, as shown in FIG. 9, there is a gap G1 between the annular end surface 332 of the first end 330 of the frame 30 of the motor 3 and the first wall 530. With this configuration, the contact between the second protrusion 336, the pair of terminals 36, the FPC8, and the first wall 530 is suppressed. In addition, an inclined surface 539 is formed on the surface of the first wall 530. This inclined surface 539 is inclined from the first housing 21 toward the second housing 22, and is formed so that the distance between the first housing 21 and the inclined surface is relatively large. A predetermined gap is formed between a part of the FPC8 electrically connected to the terminals 4d and 4e and the inclined surface 539. With this configuration, the contact between the second protrusion 336, the pair of terminals 36, the FPC8, and the connection portion between the FPC8 and the terminals 4d and 4e and the first wall 530 is suppressed.

[0025] As shown in FIG. 9, an elastic member R1 is disposed between the protruding portion 331 of the frame 30 and the first wall 530 in the rotation axis direction. The elastic member R1 is, for example, an elastic adhesive that has a predetermined elasticity even after hardening. The elastic adhesive R1 is an elastic member that has elasticity that can be deformed larger than the first housing 21 and the second housing 22. As a result, even if an impact is applied during use of the rotating device 1, the retention force of the elastic adhesive R1 can suppress the occurrence of rattle between the motor 3 and the triangular rib 538 of the second housing 22. In addition, the protruding portion 331 of the motor 3 is pressed against the triangular rib 538, so that the motor 3 can be easily fixed in a fixed position during application of the elastic adhesive R1 and until the elastic adhesive R1 hardens. The shape of the elastic member R1 may be transferred to the shape of, for example, the triangular rib 538.

[0026] 8, in the recess 531 of the first wall 530, faces 531b and 531c intersecting with face 531a may be formed to surround the protruding portion 331 of the frame 30 in the Y-axis direction. The recess 531 has a shape surrounding the protruding portion 331 of the frame 30, thereby preventing the elastic adhesive R1 from leaking out. The recess 531 has a shape surrounding the protruding portion 331 of the frame 30, thereby preventing the deformed elastic adhesive R1 from spilling out of the recess 531.

[0027] In the first embodiment, the protrusion 549 formed at a position axially opposite to the annular end face 349 of the frame 30 supports the radially outer portion of the frame 30 from the negative side of the X-axis. In this case, the radially inner portion of the first end 330 of the frame 30 is supported by the first wall 530, and the radially outer portion of the second end 340 is supported by the second wall 540. This allows the motor 3 to be supported more stably.

[0028] In this case, in the rotating device 1 in the first embodiment, the motor 3 is supported by the housing so as to be partially displaceable. As shown in FIG. 9, for example, the motor 3 may be in contact with the first wall 530 only by the triangular rib 538, and indirectly supported by the first wall 530 via the elastic member R1. That is, the motor 3 has a structure in which it is substantially floating with respect to the first wall 530, that is, a so-called floating support structure. In this case, a gap G1 is formed between the annular end surface 332 of the frame 30 and the bottom portion 534 of the first wall 530 of the second housing 22. With this configuration, it is possible to suppress the generation of noise and vibration. In addition, the second protrusion 336 of the motor 3 is suppressed from contacting the first wall 530 of the second housing 22.

[0029] 8, the triangular rib 538 formed on the first wall 530 may have an apex 538a in the rotation axis direction. In this case, the apex 538a may have a shape that is crushed and deformed by being pressed by the protruding portion 331 of the frame 30 of the motor 3 when the motor 3 is accommodated in the second housing 22. With this configuration, the backlash between the motor 3 and the second housing 22 can be reduced, so that noise and vibration can be further suppressed. Note that the protruding portion 549 formed on the second wall 540 may also have an apex, similar to the triangular rib 538.

[0030] 2, a gap G2 may be further formed between the second end 340 of the motor 3 and the second wall 540 of the second housing 22. In this case, the second end 340 of the frame 30 of the motor 3 may also be structured to be indirectly supported by the second housing 22 via an elastic member without being in direct contact with the second wall 540 of the second housing 22.

[0031] Although two triangular ribs 538 are formed in the recess 531 of the first wall 530 in the first embodiment, the number of triangular ribs 538 may be one, or three or more.

[0032] In the first embodiment, as shown in Fig. 7, of first wall 530, only a portion of recess 531 supporting triangular rib 538 protrudes from bottom 534 in the positive direction in the Z axis. Similarly, as shown in Fig. 6, of second wall 540, protrusion 545 (described later) and erected portion 546 supporting protrusion 549 protrude from bottom 544 in the positive direction in the Z axis. With this configuration, the portion of second housing 22 protruding from bottom 534 or 544 in the positive direction in the Z axis can be minimized, and therefore second housing 22 can be made lighter.

[0033] The protruding portion 342 of the motor 3 may be configured to be sandwiched in the Z-axis direction between, for example, the protruding portion 545 of the second housing 22 shown in Fig. 6 and the protruding portion 255 of the first housing 21 shown in Fig. 3. A part of the outer peripheral side surface 350 of the motor 3 may be supported in the Z-axis direction by the protruding portion 535 shown in Fig. 7, and the protruding portion 331 may be supported in the Z-axis direction by the protruding portion 537 shown in Fig. 7.

[0034] Returning to FIG. 2, the rotation of the worm 10 is transmitted to the helical gear 61a of the first transmission gear 600, and is also transmitted to the second transmission gear 62 via a gear 61b that is coaxial with the helical gear 61a and has a smaller diameter than the helical gear 61a. The rotation of the second transmission gear 62 is then transmitted to the output gear 50. The output gear 50 is provided with an output shaft 51. The rotation shafts of the first transmission gear 600 and the second transmission gear 62 extend in the direction of the output shaft 51 (Z-axis direction) and extend in a direction intersecting with the rotation axis direction of the worm 10 (X-axis direction). The output shaft 51 protrudes from the through hole 225 toward the negative side of the Z axis.

[0035] As shown in FIG. 10, the first transmission gear 600 has a rotating shaft 69 and an annular portion 641 surrounding the rotating shaft 69. FIG. 10 is a perspective view showing an example of the first transmission gear in the first embodiment. As shown in FIG. 10, a surface of the annular portion 641 of the first transmission gear 600 has a plurality of recesses or a plurality of protrusions aligned in the rotation direction of the rotating shaft 69. In the first embodiment, an end surface 630 of the first transmission gear 600 on the bearing side is a flat surface compared to the surface of the annular portion 641. The first transmission gear 600 is an example of a gear.

[0036] Also, as shown in FIG. 4, the second housing 22 has a bearing 900. As shown in FIG. 11, the first transmission gear 600 is disposed adjacent to the bearing 900 in the Z-axis direction. FIG. 11 is a cross-sectional perspective view showing an example of a rotating device in the first embodiment. Also, the first transmission gear 600 is disposed adjacent to a recess 299 formed in the first housing 21 shown in FIG. 3 in the Z-axis direction. The bearing 900 rotatably supports the rotating shaft 69 of the first transmission gear 600. As shown in FIG. 4, the bearing 900 includes a surface 931 on which unevenness is formed, an outer peripheral surface 940, and a recess 990 that supports the rotating shaft 69. In the first embodiment, the outer peripheral surface 940 is a flat surface compared to the surface of the annular portion 641. Also, the recess 299 of the first housing 21 rotatably supports the rotating shaft 69 on the positive side of the Z-axis.

[0037] Also, as shown in FIG. 10, the rotating device 1 in the first embodiment may include a viscous fluid V1. The viscous fluid V1 is, for example, a fluid having elasticity, such as grease. As shown in FIG. 11, the viscous fluid V1 is in contact with the surface of the annular portion 641 of the first transmission gear 600 and the surface 931 of the bearing 900 in the direction of the rotation axis or the radial direction. As shown in FIG. 11, the viscous fluid V1 in the first embodiment is disposed in a gap G3 between the annular portion 641 of the first transmission gear 600, in which the unevenness is formed, and the outer peripheral surface 940 of the bearing 900. That is, in the direction of the rotation axis or the radial direction, the surface of the annular portion 641 of the first transmission gear 600 and the surface 940 of the bearing 900 are separated by a predetermined distance G3. Also, in the direction of the rotation axis 69, the surface 630 of the annular portion of the gear 600 and the surface 931 of the bearing 900 face each other via the viscous fluid V1. The surface 630 of the annular portion of the gear 600 is an end surface on the bearing 900 side, and faces the bearing 900 through the fluid. The surface of the bearing 900 is an end surface on the gear 600 side, and faces the gear 600 through the fluid. In this case, even if the surface 940 of the bearing 900 is also formed with unevenness, the surface of the annular portion 641 of the first transmission gear 600 and the surface 940 of the bearing 900 are separated by a predetermined gap and are not fitted together. In addition, the viscous fluid V1 is also disposed in a gap G4 between the surface 931 of the bearing 900 and the end surface 630 of the first transmission gear 600 in the Z-axis direction, as shown in FIG. 11.

[0038] Moreover, the viscous fluid V1 has viscous resistance against the surface 641 of the rotating first transmission gear 600. The fluid V1 has viscous resistance, so that fluctuations in the rotational speed (rotational force) of the gear can be suppressed. The fluid V1 with viscous resistance has resistance according to the speed at which the fluid V1 deforms. In this embodiment, the fluid V1 has a shape that covers the surface 641 having a concave or convex shape, for example, the fluid V1 has an annular shape. When the first transmission gear 600 rotates, the fluid V1 is sheared. The sheared fluid V1 is deprived of a predetermined energy, and fluctuations in the rotational speed (rotational force) of the first transmission gear 600 are suppressed. By suppressing fluctuations in the rotational speed (rotational force) of the first transmission gear 600, the occurrence of vibration can be suppressed, and the occurrence of abnormal sounds or noise can be suppressed.

[0039] In this way, the rotation of the motor 3 is decelerated at a predetermined reduction ratio and outputted from the output shaft 51 to the outside. The rotation angle of the output gear 50 is detected by the sensor 7. As shown in FIG. 12, the sensor 7 has a sensor housing 70, a substrate 700, and a brush 750. FIG. 12 is a diagram showing an example of a sensor attached to the output gear in the first embodiment. As shown in FIG. 12, the sensor 7 is disposed on the positive side of the Z axis with respect to the output gear 50. Note that the substrate 700 and the brush 750 of the sensor 7 shown by solid lines in FIG. 12 are covered by the sensor housing 70 shown by dashed lines, and are not actually visible.

[0040] The sensor 7 includes three terminals 78a to 78c. The terminals 78a to 78c of the sensor 7 are connected to the terminals 4a to 4c via the lands 87a to 87c and the bent portions 81a to 81c of the FPC 8 shown in FIG. 2, respectively. As a result, information on the rotation angle of the output gear 50 detected by the sensor 7 is transmitted to the outside via, for example, the terminal group 4 shown in FIG. 2. The terminal group 4 is inserted into the plate 40. The plate 40 is sandwiched in the Z-axis direction between the support portion 254 of the first housing 21 shown in FIG. 3 and the support portion 264 of the second housing 22 shown in FIG. 4. When expressing the five terminals of the terminal group 4 in a distinguished manner, they may be referred to as terminals 4a to 4e.

[0041] As shown in Fig. 13, the substrate 700 of the sensor 7 has a first conductor 710 and a second conductor 720 extending in the circumferential direction, and a third conductor 730 connecting the first conductor 710 to the outside. Fig. 13 is a plan view showing an example of the conductors of the sensor in the first embodiment. As shown in Fig. 13, the first conductor 710 is located inside the second conductor 720 in the radial direction. The third conductor 730 extends in the radial direction. The second conductor 720 is a so-called resistor formed of a conductor having a resistance value larger than that of the first conductor 710 and the third conductor 730, for example.

[0042] As shown in FIG. 13, the first conductor 710 has a closed annular shape, and the second conductor 720 has an open shape surrounding the first conductor 710, with two ends 721 and 722. The two ends 721 and 722 of the second conductor 720 extend in a radial direction. As shown in FIG. 12, one end 721 of the second conductor 720 is connected to a terminal 78c, and the other end 722 is connected to another terminal 78a. The third conductor 730 is connected to a terminal 78b. In this case, the third conductor 730 and the two ends 721 and 722 of the second conductor 720 extend in the same direction, for example, in the positive direction of the X-axis.

[0043] As shown in FIG. 14 and FIG. 15, the first conductor 710 and the second conductor 720 are stacked on the third conductor 730. FIG. 14 is an enlarged cross-sectional view showing an example of the conductor of the sensor in the first embodiment. FIG. 15 is another enlarged cross-sectional view showing an example of the conductor of the sensor in the first embodiment. FIG. 14 shows a cross section cut along line II in FIG. 13. FIG. 15 shows a cross section cut along line JJ in FIG. 13. As shown in FIG. 13, the first conductor 710 is disposed inside the second conductor 720, and the entire first conductor 710 is located at a predetermined distance from the entire second conductor 720 in the radial direction, and the first conductor 710 and the second conductor 720 do not overlap each other.

[0044] 14, a hole 719 is formed penetrating the first conductor 710 and the third conductor 730 in the axial direction, and the first conductor 710 and the third conductor 730 are electrically connected via a conductive member S covering the hole 719. The conductive member S is a conductive member such as solder. An insulating member 790 may be disposed between the first conductor 710 and the third conductor 730 in a portion other than the hole 719.

[0045] The brush 750 includes a first brush 761 electrically connected to the first conductor 710, and a second brush 762 electrically connected to the second conductor 720. As shown in Fig. 12, a rotating shaft 751 of the brush 750 of the sensor 7 rotates in conjunction with the output shaft 51. In this case, the resistance value (voltage) detected by the brush 750 changes according to the contact position of the contact point of the second conductor 720 (the rotation angle of the brush 750). Based on this change in resistance value, the rotation angle of the output gear 50 is detected.

[0046] 13, a part of the third conductor 730 is located between two ends 721 and 722 of the second conductor 720 in the circumferential direction. In this case, as shown in Fig. 13, a part (both ends) of the third conductor 730 in the circumferential direction is covered by the pair of ends 721 and 722 of the second conductor 720 and is not visible. An insulating member may also be disposed in the gap G5 between the second conductor 720 and the third conductor 730.

[0047] As shown in FIG. 15, in a gap G6 between both ends in the circumferential direction of the second conductor 720 of the sensor 7, the brush 750 cannot detect the resistance value (the potential difference between the first conductor 710 and the second conductor 720). For example, when the end of the first conductor 710 or the third conductor 730 is disposed between a pair of ends 721 and 722 of the second conductor 720 in the circumferential direction, the gap G6 becomes large. On the other hand, in the first embodiment, the third conductor 730 is formed not on the same plane but at a position overlapping the first conductor 710 and the second conductor 720 in a top view, so that the gap G6 becomes small. This reduces the portion where the resistance value (potential difference) cannot be detected, thereby expanding the range in which the rotation angle can be detected.

[0048] Note that what the sensor 7 detects may be the number of rotations instead of the rotation angle of the output gear 50, or both the rotation angle and the rotation speed. Furthermore, the sensor 7 may detect the rotation angle or the number of rotations of a gear other than the output gear 50. Furthermore, although a DC motor is used as the motor 3 in the first embodiment, a brushless motor or a stepping motor may also be used. When a brushless motor or a stepping motor is used, the rotating device 1 may not require the sensor 7.

[0049] 1, in the first embodiment, outwardly protruding pieces (hereinafter referred to as joint pieces) 93 are formed on both ends of each side of the first housing 21 and the second housing 22. The joint pieces 93 are provided with holes (hereinafter referred to as connecting holes) 94 through which fasteners (not shown) are inserted as predetermined fixing members, and the joined first housing 21 and second housing 22 are firmly connected to each other via the four connecting holes 94 by the predetermined fasteners to form an integrated housing 2.

[0050] 1 to 5, in the first embodiment of the configuration of the housing 2 described above, a boss portion 29 is provided at a corner of a side wall portion 211 forming the outer periphery of the first housing 21, and a second through hole 292 is provided at a corner of the second housing 22. That is, the first housing 21 has a cylindrical boss portion 29 protruding from the surface portion 210 and having a first through hole 291 through which a fastener such as a bolt or a screw can be inserted. The second housing 22 is provided with a second through hole 292 into which the boss portion 29 fits.

[0051] A plurality of boss portions 29 are provided, and a plurality of second through holes 292 are also provided accordingly. The plurality of boss portions 29 are provided at a plurality of corner portions of the first housing 21, and the plurality of second through holes 292 are also provided at a plurality of corner portions of the second housing 22. In the first embodiment, the surface portion 210 of the first housing 21 and the surface portion 220 of the second housing 22 are substantially rectangular in plan view, and the boss portions 29 and the second through holes 292 are provided at the respective corner portions. Note that, in the first embodiment, the boss portions 29 and the second through holes 292 are formed at three of the four corner portions, but this is not limited thereto, and they may be provided at all the four corner portions, or may be provided at other locations.

[0052] Further, the first housing 21 and the second housing 22 are formed with mutually corresponding extending portions 219, 229, respectively. The extending portions 219, 229 protrude toward the positive direction of the X-axis, that is, in the first embodiment, in the direction in which the terminal group 4 extends. The extending portions 219, 229 are joined together to form the connector portion 209 shown in Fig. 1. The terminal group 4 shown in Fig. 2 is held in the connector portion 209.

[0053] Further, a first hook 240 is provided on the side wall 221 of the second housing 22, and a first protrusion 230 that engages with the first hook 240 is provided on the side wall 211 of the first housing 21. The first protrusion 230 is integrally formed on the outer periphery of the side wall 211 of the first housing 21. The first hook 240 is integrally formed on the side wall 221 of the second housing 22. In the first embodiment, the first protrusion 230 and the first hook 240 are formed on the side wall 211 and 221 on the X-axis positive direction side, that is, on the side on which the extension portion 219 extends. In the following, the first protrusion 230 and the first hook 240 may be collectively referred to as a first engagement portion. In addition, the hook may be formed on the first housing 21, and the protrusion may be formed on the second housing 22. For example, in the first embodiment, the hook 270 is formed on the first housing 21 as shown in FIG. 3, and the protrusion 280 is formed on the second housing 22 as shown in FIG.

[0054] 3 and 5, a first opposing surface 215 protruding in the Z-axis negative direction and a second opposing surface 217 located in the Z-axis positive direction are formed at the end of the side wall 211 of the first housing 21 on the Z-axis negative side. In the first embodiment, the first opposing surface 215 is formed inward from the second opposing surface 217, that is, at a position closer to the opening 212. Similarly, as shown in FIGS. 4 and 5, a fourth opposing surface 228 protruding in the Z-axis positive direction and a third opposing surface 226 located in the Z-axis negative direction are provided at the end of the side wall 221 of the second housing 22 on the Z-axis positive side. As shown in FIGS. 4 and 5, the third opposing surface 226 is formed inward from the fourth opposing surface 228, that is, at a position closer to the opening 222.

[0055] 5, in the housing 2, the fourth opposing surface 228 of the second housing 22 is formed at a position opposing the second opposing surface 217 of the first housing 21, and the third opposing surface 226 is formed at a position opposing the first opposing surface 215. In this configuration, the first opposing surface 215 and the second opposing surface 217 are engaged with the fourth opposing surface 228 and the third opposing surface 226.

[0056] In this manner, the first housing 21 and the second housing 22 are butted together to form the housing 2 shown in Fig. 1. That is, by engaging the first hook 240 of the second housing 22 with the first protruding portion 230 of the first housing 21, the first housing 21 and the second housing 22 are integrated together to form the housing 2 that houses the motor 3, the gear group 6, and the like described above.

[0057] As described above, the rotating device 1 in the first embodiment includes the motor 3 having the rotating shaft 31, the frame 30 having the first end 330 and the second end 340 extending in the direction of the rotating shaft, the gear 6, and the housings 21 and 22 that accommodate the motor 3 and the gear 6. The first end 330 includes a protruding portion 331 extending in the direction of the rotating shaft, and the second end 340 includes an annular surface 349 surrounding the rotating shaft. The second housing 22 includes a first wall 530 having a triangular rib 538 that contacts the protruding portion 331 of the frame 30 in the direction of the rotating shaft, and a second wall 540 having a protruding portion 549 that contacts the annular surface 349 of the frame 30 in the direction of the rotating shaft. With this configuration, the contact surface between the motor 3 and the second housing 22 can be made small, so that the generation of noise and vibration can be suppressed.

[0058] The rotating device 1 in the first embodiment includes a gear 600 having a rotating shaft 69 and an annular portion 641 surrounding the rotating shaft 69, a housing 22 having a bearing 900 that rotatably supports the rotating shaft 69 of the gear 600, and a viscous fluid V1. A surface of the annular portion 641 of the gear 600 or a surface 931 of the bearing has a plurality of recesses or a plurality of protrusions aligned in the rotation direction of the rotating shaft 69. In the direction of the rotating shaft 69 or the radial direction, the viscous fluid V1 is in contact with the surface of the annular portion 641 of the gear 600 and the surface 931 of the bearing. With this configuration, the rotating device 1 can be made quieter.

[0059] Moreover, the sensor 7 in the first embodiment includes a substrate 700 having a first conductor 710 and a second conductor 720 extending in the circumferential direction and a third conductor 730 connecting the first conductor 710 to the outside, a first brush 761 electrically connected to the first conductor 710, and a second brush 762 electrically connected to the second conductor 720. In the radial direction, the first conductor 710 is inside the second conductor 720. The first conductor 710 has a closed annular shape. The second conductor 720 has an open shape having two ends 721 and 722 and surrounding the first conductor 710. Moreover, the first conductor 710 and the second conductor 720 are stacked on the third conductor 730. Moreover, the rotating device 1 including the sensor 7 includes a gear 50 whose rotation angle or rotation speed is detected by the sensor 7, a motor 3, and a housing 2. With this configuration, the detection range of the rotation angle of the sensor 7 can be expanded.

[0060] [Second embodiment] The shapes and structures of the conductor of the sensor 7, the first transmission gear 600, the bearing 900, and the accommodating part 500 shown in the first embodiment are merely examples, and may be as shown in the second embodiment. FIG. 16 is a perspective view showing an example of a rotating device in the second embodiment. FIG. 17 is an exploded perspective view showing an example of a rotating device in the second embodiment. FIG. 18 is a partially cutaway perspective view showing an example of a second housing in the second embodiment. FIG. 19 is a perspective view showing an example of an internal structure of a rotating device in the second embodiment. In the following embodiments and modifications, the same reference numerals are used for the same parts as those shown in the drawings described above, and duplicated explanations will be omitted.

[0061] As shown in Figs. 16 to 19, the rotating device A1 in the second embodiment differs from the first embodiment in the shapes and configurations of the first housing B21 and the second housing B22. For example, the housing B2 in the second embodiment does not have a boss portion 29, and the positions and shapes of the joint piece B93 and the connecting hole B94 are also different from those of the housing 2 in the first embodiment. In addition, as shown in Figs. 17 and 19, the motor A3 may have, for example, a rectangular frame. In addition, as shown in Figs. 17 and 18, the shapes of the housings B55 and C00, the extensions B19 and B29, the through-hole B25, the openings B212 and B222, the support portions B56 and B60, etc. are different from those of the first embodiment.

[0062] 19, the rotating device A1 in the second embodiment includes a plate F40 fixed to a housing B2, a terminal 4 fixed to the plate F40, terminals H8a to H8c of a sensor H7, and an FPC 800 that electrically connects the terminal 4. The terminal 4 is an example of an external connection terminal, and the FPC 800 is an example of another member. In the following, when the three terminals H8a to H8c are expressed without distinction, they may be simply referred to as terminal H8.

[0063] 20, the output gear E50 in the second embodiment is formed with a recess 59 cut from the positive side to the negative side in the Z-axis direction by a depth G11. FIG. 20 is a diagram showing an example of an assembly process of the internal structure in the second embodiment. In this case, as shown in FIGS. 19 and 20, a part of the sensor H7 in the second embodiment, on the negative side in the Z-axis direction, of the thickness T11 of the sensor housing H70 is accommodated in the recess 59 of the output gear E50. That is, the rotating device A1 in the second embodiment includes a gear E50, and a part of the sensor H7 is accommodated in the recess 59 of the gear E50 in the direction from the first housing B21 to the second housing B22.

[0064] In this case, a part of the sensor H7 on the positive side on the X axis, including the terminal H8, is located outside the outer periphery E1 of the gear E50, i.e., on the positive side on the X axis, as shown in Fig. 21. Fig. 21 is a diagram showing an example of a sensor attached to an output gear in the second embodiment. Also, as shown in Fig. 17, the plate F40 is located on the positive side on the X axis with respect to the sensor H7. That is, the terminal H8 of the sensor H7 is located between the outer periphery E1 of the gear E50 and the plate F40. With this configuration, it is possible to reduce the size of the internal structure of the rotating device A1 in the X axis direction and the Z axis direction.

[0065] As shown in Fig. 21 and Fig. 22, the sensor H7 in the second embodiment differs from the sensor 7 in the first embodiment in the shapes of the second conductor H20 and the brush H50. Fig. 22 is a plan view showing an example of the conductor of the sensor in the second embodiment. Note that, in the second embodiment as well, the substrate H00 and the brush H50 of the sensor H7 are covered by the sensor housing H70 shown by the dashed line, and are not actually visible.

[0066] 21, the sensor H7 has a terminal H8. As in the first embodiment, the terminals H8a to H8c of the sensor 7 are connected to the terminals 4a to 4c, respectively, via the lands 87a to 87c and the bent portions 88a to 88c of the FPC 800 shown in FIG.

[0067] 22, in the second conductor H20 of the substrate H00 of the sensor H7, one end H22 is located radially inward of the other end H21. That is, of the two ends H21 and H22 of the second conductor H20, the one end H22 is located closer to the first conductor 710 than the other end H21 in the radial direction. The second conductor H20 also has two bent portions H23 and H24.

[0068] In this case, a portion H28 from one end H22 to one bent portion H23 in the circumferential direction is located radially inward compared to a portion H29 from the other bent portion H24 to the other end H21 in the circumferential direction. Furthermore, a change in resistance value in the portion H28 of the second conductor H20 is detected by the second brush H62 of the brush H50, and a change in resistance value in the portion H29 is detected by the third brush H63 of the brush H50.

[0069] In the second embodiment, the width W2 of a gap G12 between one end H22 and the other end H21 of the second conductor H20 in the circumferential direction is smaller than the width of the gap G6 shown in FIG. 15, as shown in FIG. 23. FIG. 23 is an enlarged cross-sectional view showing an example of a conductor of a sensor in the second embodiment. FIG. 23 shows a cross-section taken along line KK in FIG. 22. With this configuration, the gap G12 can be made smaller than in the first embodiment, and therefore the detection range of the rotation angle by either the second brush H62 or the third brush H63 can be expanded.

[0070] 18, in the second embodiment, the bearing Q00 formed in the second housing B22 has unevenness formed not only on the surface 931 facing the first transmission gear E61 but also on the outer circumferential surface 941. Also in the second embodiment, a viscous fluid V1 is disposed on the surface 931 and the outer circumferential surface 941 of the bearing Q00.

[0071] In this configuration, even if the annular portion 640 of the first transmission gear E61 does not have projections and recesses like the annular portion 641 shown in FIG. 10, the effect of reducing noise can be obtained.

[0072] As shown in Fig. 24, the plate F40 is sandwiched between the support B56 of the first housing B21 and the support B60 of the second housing B22. Fig. 24 is a side cross-sectional view showing an example of a rotating device in the second embodiment. Fig. 24 shows a cross-section taken along line GG in Fig. 16. In this case, as shown in Fig. 24, the terminal H8 of the sensor H7 is located between the outer periphery E1 of the gear E50 and the plate F40 at G15. Note that the support parts B56 and B60 may be recesses cut out in the Z-axis direction, for example, as shown in Figs. 17 and 18.

[0073] As shown in Fig. 21, the plate F40 may have a protrusion F41 on its side. The protrusion F41 of the plate F40 protrudes in the negative direction in the Z axis direction, that is, in the direction from the first housing B21 to the second housing B22, and engages with a recess B61 of the second housing B22 as shown in Fig. 25. Fig. 25 is another side cross-sectional view showing an example of a rotating device in the second embodiment. Fig. 25 shows a cross section taken along line HH in Fig. 16. The recess B61 is an example of a part of the second housing. With this configuration, the engagement between the plate F40 and the housing B2 can be further strengthened.

[0074] Note that the protrusion F41 of the plate F40 is located outside (on the negative side in the Y-axis direction) of the end of the sensor H7 as shown in Fig. 20. With this configuration, the FPC 800 can be connected in a state in which the plate F40 and the sensor H7 are arranged on the same plane as shown in Fig. 20, thereby improving manufacturability.

[0075] In the second embodiment, each of the bent portions 88a to 88c is bent at only one location, as shown in Figures 24 and 25. According to this configuration, the shape and structure of the FPC 800 can be simplified.

[0076] The protrusion F41 may protrude in a direction from the second housing B22 toward the first housing B21, i.e., toward the positive side of the Z axis, and engage with a recess formed in the first housing B21. That is, the protrusion F41 of the plate F40 engages with a portion of the first housing B21 or a portion B61 of the second housing B22. The protrusion may be formed on the positive side of the end of the sensor H7 on the positive side of the Y axis, and multiple protrusions may be formed on the plate F40.

[0077] In the second embodiment, the sensor H7 and the plate F40 are adjacent to each other in the X-axis direction, that is, in the longitudinal direction of the terminals 4a to 4e. As shown in Fig. 25, the distance G16 between the sensor H7 and the plate F40 in the X-axis direction is smaller than the distance G7 between the sensor 7 and the plate 40 shown in Fig. 2.

[0078] 24, the portion 4T of the terminal 4 protruding from the plate F40 faces the terminal H8 of the sensor H7 in the Z-axis direction, i.e., the direction from the first housing B21 to the second housing B22. In this case, the terminal 4 is located closer to the first housing B21 than the sensor H7, i.e., on the positive side in the Z-axis direction.

[0079] The housing B2 of the rotating device A1 in the second embodiment has a separable first housing B21 and second housing B22. The housing B2 is disassembled using a jig Z as shown in FIG. 26 after removing a fastener (not shown) inserted into a hole 94 of a joint piece 93, for example. FIG. 26 is a perspective view showing an example of a separation process of the housings in the second embodiment. FIG. 27 is a cross-sectional perspective view showing an example of a separation process of the housings in the second embodiment. FIG. 27 shows a cross section taken along line DD in FIG. 26.

[0080] 26 and 27, the jig Z includes a first pressing portion Z10 that presses the first housing B21 toward the positive side of the Z axis, and a second pressing portion Z20 that presses the second housing B22 toward the negative side of the Z axis. The first pressing portion Z10 is formed on a bottom surface Z50 of the jig Z, and the second pressing portion Z20 is formed on a top surface Z60 of the jig Z. A hole portion Z90 is formed on the top surface Z60. For example, as shown in FIG. 26, the jig Z and the rotating device A1 are aligned by inserting a rod-shaped member Z99 inserted into the hole portion Z90 into a connecting hole B94 of a joint piece B93 of the rotating device A1.

[0081] In this case, the first housing B21 is formed with a protrusion B70 to be pressed by the first pressing portion Z10, and the second housing B22 is formed with a protrusion B80 to be pressed by the second pressing portion Z20. As shown in FIG. 17, the side wall B211 of the first housing B21 in the second embodiment is formed with a hook B30 and a protrusion B70. The side wall B211 is an example of a side surface, the hook B30 is an example of an engaging portion, and the protrusion B70 is an example of a protrusion. As shown in FIG. 17, the side wall B221 of the second housing B22 in the second embodiment is formed with a protrusion B40 and a protrusion B80. The side wall B221 is an example of a side surface, the protrusion B40 is an example of an engaged portion, and the protrusion B80 is an example of a protrusion. In the second embodiment, the first housing B21 does not have the first protrusion 230 and has a flat surface, and the second housing B22 does not have the first hook 240 and has a flat surface.

[0082] 16, the protrusion B70 of the first housing B21 and the protrusion B80 of the second housing B22 are adjacent to each other in the circumferential direction of the side wall portions B211 and B221, for example, in the X-axis direction or the Y-axis direction, and are adjacent to each other in the direction from the first housing B21 to the second housing B22, for example, in the Z-axis direction. That is, the hook B30 of the first housing B21 and the protrusion B80 of the second housing B22 are disposed at positions adjacent to each other in the circumferential direction and in the direction from the first housing B21 to the second housing B22.

[0083] 17, the protrusion B70 of the first housing B21 is adjacent to the hook B30 in the circumferential direction. The protrusion B80 of the second housing B22 is adjacent to the protrusion B40 in the circumferential direction. In this case, as shown in FIG 17, the protrusion B70 and the hook B30 are adjacent to each other with a distance G13 therebetween, and the protrusion B80 and the protrusion B40 are adjacent to each other with a distance G14 therebetween.

[0084] As shown in Fig. 28, in the Z-axis direction, i.e., the direction from the first housing B21 to the second housing B22, the end face B81 of the protrusion B80 of the second housing B22 on the first housing B21 side is a flat surface. Fig. 28 is a side cross-sectional view showing an example of a process of disassembling the housings in the second embodiment. Fig. 28 shows a cross section taken along line EE in Fig. 27.

[0085] 27 and 28, the second pressing portion Z20 of the jig Z has a flat surface Z21. The flat surface Z21 presses the end surface B81 of the protrusion B80 of the second housing B22 toward the negative side of the Z axis, thereby separating the second housing B22 from the first housing B21. Note that, as shown in Fig. 28, when the jig Z is aligned with the rotating device A1, the second pressing portion Z20 comes into contact with the side wall portion B211 of the first housing B21.

[0086] The jig Z may include a third pressing portion Z30 for pushing the hooks B30 of the first housing B21 outward. As shown in Fig. 16, the third pressing portion Z30 includes an inclined surface Z31 that comes into contact with the inclined surface B31 of the hooks B30 of the first housing B21. By pushing the hooks B30 outward, the third pressing portion Z30 makes it easier for the hooks B30 to come off the protruding portion B40 of the second housing B22.

[0087] As shown in Fig. 29, in the direction from the first housing B21 to the second housing B22, the end face B71 of the protrusion B70 of the first housing B21 on the second housing B22 side is a flat surface. Fig. 29 is another side cross-sectional view showing an example of the disassembly process of the housings in the second embodiment. Fig. 29 shows a cross section cut along the line FF in Fig. 27. Note that, as shown in Fig. 29, when the jig Z is aligned with the rotating device A1, the first pressing portion Z10 contacts the side wall portion B221 of the second housing B22. Furthermore, in Fig. 29, the second pressing portion Z20 of the jig Z is not visible.

[0088] 27 and 29, the first pressing portion Z10 of the jig Z has a flat surface Z11. The flat surface Z11 presses the end surface B71 of the protrusion portion B70 of the first housing B21 toward the positive side in the Z-axis direction, thereby separating the first housing B21 from the second housing B22.

[0089] 17, in the circumferential direction, the side surface B72 of the protrusion B70 of the first housing B21 on the hook B30 side is a flat surface. With this configuration, the protrusion B80 does not interfere with the protrusion B70 being pressed by the first pressing portion Z10 of the jig Z. Similarly, in the circumferential direction, the side surface B82 of the protrusion B80 of the second housing B22 on the protruding portion B40 side is a flat surface.

[0090] 17, the thickness T21 of the protrusion B70 of the first housing B21 and the thickness T22 of the protrusion B80 of the second housing B22 are the same as the thickness of the hook B30 or the protrusion B40. With this configuration, the size of the housing B2 can be minimized while ensuring a sufficient thickness of the protrusion for separating the housing B2 using the jig Z.

[0091] With this configuration, the first housing B21 and the second housing B22 are separated as shown in Fig. 30. Fig. 30 is a cross-sectional perspective view showing an example of the housings after separation in the second embodiment. The hook B30 of the first housing B21 and the protrusion B40 of the second housing B22 are disengaged by the jig Z, and the first housing B21 moves relatively to the second housing B22 in the positive direction on the Z axis.

[0092] As described above, the rotating device A1 in the second embodiment includes a housing B2 formed of a first housing B21 and a second housing B22. An engaging portion B30 and a protrusion B70 are formed on a side surface B211 of the first housing B21, and an engaged portion B40 and a protrusion B80 that engage with the engaging portion B30 are formed on a side surface B221 of the second housing B22. The protrusion B70 of the first housing B21 and the protrusion B80 of the second housing B22 are disposed at positions adjacent to each other in the circumferential direction and in the direction from the first housing B21 to the second housing B22. With this configuration, the first housing B21 and the second housing B22 can be easily separated.

[0093] Moreover, the rotating device A1 in the second embodiment includes a housing B2 having a separable first housing B21 and second housing B22, a motor A3, a sensor H7 having a terminal H8, a plate F40 fixed to the housing B2, an external connection terminal 4 fixed to the plate F40, a terminal H8 of the sensor H7 that fixes the external connection terminal 4 to the housing 2, and another member 800 that electrically connects the external connection terminal 4. In the direction from the first housing B21 to the second housing B22, a portion 4T of the external connection terminal 4 protruding from the plate F40 faces the terminal H8 of the sensor H7. With this configuration, the rotating device A1 can be made smaller.

[0094] [Variations] Although the configurations and modifications in each embodiment have been described above, the embodiments and modifications are not limited to these. For example, the example in which unevenness is formed on the surface of the bearing of the second housing has been described, but the first transmission gear may be configured to have unevenness. FIG. 31 is a perspective view showing an example of the first transmission gear in the first modification. As shown in FIG. 31, in the first transmission gear K00 in the first modification, unevenness is formed on the surface 631 facing the bearing 900 in addition to the annular portion 641. That is, the surface of the annular portion of the gear K00 is the inner peripheral surface 641, the surface of the bearing 900 is the outer peripheral surface 940, and a plurality of concaves or convexities aligned in the rotation direction of the rotating shaft 69 are formed on the inner peripheral surface 641 of the annular portion of the gear K00 facing the outer peripheral surface 940 of the bearing 900. Also, in the first modification, a viscous fluid V1 is disposed on the annular portion 641 and the surface 631 of the first transmission gear K00.

[0095] According to this configuration, noise can be reduced even if the surface 930 of the bearing 900 and the surface 940 of the annular portion are not formed with irregularities.

[0096] In addition, FIG. 31 illustrates an annular portion 631 of the first transmission gear K00 having projections and recesses formed over the entire portion, but the annular portion 631 may have projections and recesses formed only over a portion of the portion, such as an outer portion or an inner portion in the radial direction.

[0097] Also, in the substrate H00 of the sensor H7 in the second embodiment, for example, the second conductor H20 may be formed in a spiral shape inclined from the second conductor L20 toward the first conductor 710 as shown by the dotted line in FIG. 32, instead of having the bent portions H23 and H24. FIG. 32 is a plan view showing an example of a conductor of the sensor in the second modified example. In the second conductor L20 shown in FIG. 32, the portion L28 and the portion L29 are connected by the inclined portion L25. According to this configuration, the distance between the second conductor L20 and the rotation axis 751 changes continuously, so that one second brush H62 can cover the entire second conductor.

[0098] Also, a gear other than the first transmission gear, for example, the second transmission gear 62 or the output gear 50 may be configured to be journaled by a bearing similar to the bearing 900 or Q00. Note that the gear and the bearing may be configured to have only convex portions or only concave portions.

[0099] Although the present invention has been described above based on each embodiment and each modification, it goes without saying that the present invention is not limited to each embodiment and each modification, and various modifications are possible within the scope of the gist of the present invention. Such modifications that do not depart from the scope of the gist are also included in the technical scope of the present invention, and this will be clear to those skilled in the art from the description of the claims. [Explanation of symbols]

[0100] 1, A1 rotating device, 2, B2 housing, 3, A3 motor, 4 terminal group, 6 gear group, 7, H7 sensor, 70, H70 sensor housing, 78a to 78c, H8a to H8c terminal, 700, H00 board, 710 first conductor, 719 hole, 720, H20, L20 second conductor, 721, 722, H21, H22 end, 730 third conductor, 750, H50 brush, 751 rotating shaft, 761 first brush, 762, H62 second brush, H63 third brush, 790 insulating member, 8, 800 FPC, 87a to 87c land, 81a to 81c, 88a to 88c bending portion, 900, Q00 bearing, 930, 931 surface, 940, 941 Outer circumferential surface, 10 worm, 21, B21 first housing, 22, B22 second housing, 29 boss portion, 30 frame, 31 rotating shaft, 36 terminal, 40, F40 plate, F41 convex portion, 50, E50 output gear, 51 output shaft, 59 concave portion, 600, E61, K00 first transmission gear, 61a helical gear, 61b gear, 62 second transmission gear, 69 rotating shaft, 93, B93 joint piece, 94, B94 connecting hole, 209 connector portion, 210, 220 surface portion, 211, 221, B211, B221 side wall portion, 212, 222, B212, B222 opening portion, 215 first opposing surface, 217 second opposing surface, 219, 229, B19, B29 Extension portion, 225, B25 Through hole, 226 Third opposing surface, 228 Fourth opposing surface, 230 First protruding portion, B30 Hook, 240 First hook, B40 Protruding portion, 250, 500, B55, C00 Storage portion, 254, 264, B56, B60 Support portion, B61 Recess, 270 Hook, 280 Protruding portion, B31 Inclined surface, B70, B80 Projecting portion, B71, B81 End surface, B72, B82 Side surface, 291 First through hole, 292 Second through hole, 299, 990 Recess, 330 First end portion, 331 Protruding portion, 332 End surface, 336 Second protruding portion, 340 Second end portion, 342 Protruding portion, 349 End surface, 350 Outer peripheral side surface, 530 First wall, 531 recess, 534, 544 bottom, 538 triangular rib, 540 second wall, 545 protrusion, 546 standing portion, 549 protrusion, 550 side wall, R1 elastic adhesive, V1 fluid, Z jig, Z10 first pressing portion, Z11,Z21 surface, Z20 second pressing portion, Z30 third pressing portion, Z31 inclined surface, Z50 bottom surface, Z60 top surface, Z90 hole portion, Z99 rod-shaped member,

Claims

1. A housing formed of a first housing and a second housing, An engagement portion and a protrusion are formed on a side surface of the first housing, A side surface of the second housing is formed with an engaged portion and a protrusion that engages with the engaging portion, The protrusion of the first housing and the protrusion of the second housing are disposed at positions adjacent to each other in a circumferential direction and in a direction from the first housing to the second housing. Rotating equipment.

2. In the circumferential direction, the protrusion of the first housing is adjacent to the engagement portion, In the circumferential direction, the protrusion of the second housing is adjacent to the engaged portion. The rotating device according to claim 1 .

3. In a direction from the first housing toward the second housing, an end surface of the convex portion of the first housing facing the second housing is a flat surface, In a direction from the first housing toward the second housing, an end surface of the convex portion of the second housing facing the first housing is a flat surface. The rotating device according to claim 1 or 2.

4. In the circumferential direction, a side surface of the protrusion of the first housing on the side of the engaged portion is a flat surface, In the circumferential direction, a side surface of the protrusion of the second housing on the side of the engagement portion is a flat surface. The rotating device according to claim 1 .

5. The rotating device according to claim 1 , wherein a thickness of the protrusion of the first housing and a thickness of the protrusion of the second housing are the same as a thickness of the engaging portion or the engaged portion.

Images