Drain valve drive device

Abstract

A drain valve drive device is provided to reduce the height difference between the output side end surface of the motor and the wire connected to the valve core. The drain valve drive device of the present invention has a motor, an output clutch mechanism provided on the output side of the motor, a rotary output member, a wire, a valve core, and a switching member, in the driving force transmission path from the motor to the valve core, the driving force of the motor is transmitted sequentially via the output clutch mechanism, the rotary output member, and the wire, the output clutch mechanism is switched between on and off by the switching member that rotates in linkage with the rotary output member, the switching member and the rotary output member each have a rotary axis parallel to the motor axis direction and overlap when viewed in a direction perpendicular to the motor axis direction, and the rotary output member has a winding portion, the portion of the outer circumferential surface of the winding portion that overlaps the switching member when viewed in a direction perpendicular to the motor axis direction is for winding the wire.

Description

TECHNICAL FIELD

[0001] The present application relates to a drain valve drive device. BACKGROUND

[0002] A drain valve drive device is often used in a washing machine or the like.

[0003] The drain valve drive device generally has a motor, a linkage brake mechanism, an output clutch mechanism, a planetary gear mechanism, a rotary output member, a wire, a spool, and a switching member provided at the output side of the motor, the linkage brake mechanism locks or unlocks the ring gear of the planetary gear mechanism depending on whether or not the driving force of the motor is obtained (specifically, the linkage brake mechanism includes a linkage portion and a brake portion, wherein the linkage portion generally includes a first portion connected to the rotation shaft of the motor and a second portion that rotates following the first portion due to the magnetic induction force when the first portion rotates at high speed, and the brake portion generally includes a brake lever that locks the ring gear of the planetary gear mechanism driven by the second portion of the linkage portion and a spring member that applies a force to the direction in which the brake lever releases the lock of the ring gear of the planetary gear mechanism), in the driving force transmission path from the motor to the spool, the driving force of the motor is transmitted in sequence via the output clutch mechanism, the planetary gear mechanism, the rotary output member, and the wire, the output clutch mechanism is switched between on and off by the switching member that rotates in linkage with the rotation of the rotary output member, and the switching member and the rotary output member each have a rotation axis parallel to the motor axis.

[0004] Figures 7 to 9 One of the existing drain valve drive devices is shown, in which the output rotary member 136X includes an output gear 1361X and a pulley 1362X formed separately, the surface of the output gear 1361X on the output side of the motor 120X (the upper side in FIG. 1) is provided with a cam groove, a central column protruding toward the output side of the motor, and an abutting piece on the outer peripheral side of the output gear, the pulley 1362X is formed with a groove on the outer peripheral surface for winding and accommodating the wire 138X connected to the spool 139X, the pulley 1362X is closer to the output side of the motor than the output gear 1361X, and is fixed to the front end of the central column of the output gear 1361X by a screw or the like, and the switching member 140X is substantially fan-shaped, and has a protrusion protruding toward the opposite side of the output of the motor on the surface on the opposite side of the output of the motor (the lower side in FIG. 1), the protrusion is engaged in the cam groove of the output gear 1361X, and the switching member 140X is closer to the opposite side of the output of the motor than the pulley 1362X, and rotates in linkage with the rotation of the rotary output member 136X by abutting against the switching member 140X from the direction perpendicular to the motor axis by the abutting piece. Figure 7 Figure 7

[0005] ​​In the drain valve drive device described above, as shown in Figure 8 the pulley 1362X is located on the output side of the motor than the switching member 140X, and is exposed to the outside of the housing of the drain valve drive device, and therefore, as shown in Figure 9 the height difference D (height difference in the motor axis direction) between the output opposite side end surface of the motor and the wire 138X connected to the spool 139X determined by the position of the pulley 1362X is generally large, and sometimes cannot satisfy the actual requirements. SUMMARY

[0006] The present application has been achieved in order to solve the above-described problems, and aims to provide a drain valve drive device that is helpful in reducing the height difference in the motor axis direction between the output opposite side end surface of the motor and the wire connected to the spool.

[0007] In order to achieve the above-described object, the present application provides a drain valve drive device having: a motor; and an output clutch mechanism, a rotary output member, a wire, a spool, and a switching member provided on the output side of the motor, in which the driving force of the motor is transmitted sequentially via the output clutch mechanism, the rotary output member, and the wire in the driving force transmission path from the motor to the spool, the output clutch mechanism is switched between on and off by the switching member that rotates in linkage with the rotation of the rotary output member, the switching member and the rotary output member each have a rotation axis parallel to the motor axis, and the switching member and the rotary output member overlap when viewed in a direction perpendicular to the motor axis, the rotary output member has a winding portion, and the portion of the outer peripheral surface of the winding portion that overlaps the switching member when viewed in the direction perpendicular to the motor axis is for winding the wire.

[0008] According to the drain valve drive device of the present application, the switching member and the rotary output member overlap when viewed in the direction perpendicular to the motor axis, the rotary output member has a winding portion, and the portion of the outer peripheral surface of the winding portion that overlaps the switching member when viewed in the direction perpendicular to the motor axis is for winding the wire, and therefore, compared with the case where the wire connected to the spool is wound on the outer peripheral surface of the pulley located on the output side of the motor than the switching member in the past, it is helpful in reducing the height difference in the motor axis direction between the output opposite side end surface of the motor and the wire connected to the spool.

[0009] Further, in the drain valve driving device of the present application, preferably, a transmission mechanism is provided between the output clutch mechanism and a rotation output member in the driving force transmission path from the motor to the spool, the rotation output member having a transmission portion which is on the opposite side of the winding portion from the output of the motor and which is in contact with the transmission mechanism to transmit the driving force of the motor, and a cam portion which is on the output side of the motor from the winding portion and which has a cam groove, and the switching member has a protrusion as a cam follower which is engaged with the cam groove from the output side of the motor.

[0010] According to the drain valve driving device of the present application, the transmission portion which is in contact with the transmission mechanism to transmit the driving force of the motor is on the opposite side of the winding portion from the output of the motor, so that when the wire wound on the winding portion is loosened due to an unexpected situation and floats up from the outer peripheral surface of the winding portion, the floating wire is less likely to be caught between a plurality of gear members included in, for example, a gear mechanism densely arranged inside the drain valve driving device, and the maintenance is easy.

[0011] Further, in the drain valve driving device of the present application, preferably, the transmission mechanism includes a plurality of gear members which are engaged with each other, and the transmission portion is engaged with a final-stage gear member among the plurality of gear members.

[0012] Further, in the drain valve driving device of the present application, preferably, the outer peripheral surface of the winding portion has a groove in which the wire is wound and accommodated.

[0013] According to the drain valve driving device of the present application, the outer peripheral surface of the winding portion has the groove in which the wire is wound and accommodated, so that when the wire is wound on the winding portion, the wire is easily held stably within a prescribed range on the outer peripheral surface of the winding portion, and the wire is prevented from interfering with the surrounding members to affect the operation of the drain valve driving device.

[0014] Further, in the drain valve driving device of the present application, preferably, the transmission portion has an opening portion which is recessed or perforated from the surface of the output side of the motor toward the opposite side of the output of the motor, and a clamping member is connected to the end portion of the wire which is distal from the spool in a detachable manner so as to be engaged with the opening portion.

[0015] According to the drain valve driving device of the present application, the transmission portion has the opening portion which is recessed or perforated from the surface of the output side of the motor toward the opposite side of the output of the motor, and the clamping member is connected to the end portion of the wire which is distal from the spool in a detachable manner so as to be engaged with the opening portion, so that the replacement work of the wire and the spool is easily performed, and the maintenance is easy.

[0016] Further, in the drain valve drive device of the present application, it is preferable that an abutting piece be formed on a surface of the winding portion on the output side of the motor, and the switching member be rotated in linkage with the rotation of the rotation output member by the abutting piece abutting against the switching member in a direction perpendicular to the motor axis.

[0017] Further, in the drain valve drive device of the present application, it is preferable that the switching member have a cover receiving portion covering and receiving at least a portion of the cam portion and at least a portion of the winding portion from the output side of the motor, and have the protrusion.

[0018] According to the drain valve drive device of the present application, the switching member cover receiving portion covering and receiving at least a portion of the cam portion and at least a portion of the winding portion from the output side of the motor, and having the protrusion, so the switching member and the rotation output member are easily arranged compactly in a direction perpendicular to the motor axis, and the miniaturization of the drain valve drive device is facilitated.

[0019] Further, in the drain valve drive device of the present application, it is preferable that the cover receiving portion be in a sector shape centered on the protrusion when viewed along the motor axis.

[0020] Further, in the drain valve drive device of the present application, it is preferable that the output clutch mechanism include a first member provided to a rotation shaft of the motor, a second member on the output side of the motor than the first member, and moved in the direction of the motor axis to engage or disengage with the first member, and a spring member applying a force separating the first member and the second member, the switching member being on the output side of the motor than the second member, and a cam mechanism being provided between the second member and the switching member.

[0021] Further, in the drain valve drive device of the present application, it is preferable that the rotation output member be integrally formed.

[0022] According to the drain valve drive device of the present application, the rotation output member is integrally formed, so the number of parts is reduced, and the assembly efficiency is improved, and the manufacturing cost is reduced.

[0023] Further, in the drain valve drive device of the present application, it is preferable to have a linkage brake mechanism provided on the output side of the motor and a planetary gear mechanism, the linkage brake mechanism locking or unlocking a ring gear of the planetary gear mechanism depending on whether or not the driving force of the motor is obtained, the planetary gear mechanism being provided between the output clutch mechanism and the rotary output member in the driving force transmission path from the motor to the spool, and in the state where the ring gear is locked by the linkage brake mechanism and the output clutch mechanism is engaged, the driving force of the motor is transmitted to the spool via the output clutch mechanism, the planetary gear mechanism, the rotary output member and the wire in this order.

[0024] (EFFECT OF INVENTION)

[0025] According to the present application, the switching member and the rotary output member overlap when viewed in the direction perpendicular to the motor axis, and the rotary output member has a winding portion, and the portion of the outer peripheral surface of the winding portion that overlaps the switching member when viewed in the direction perpendicular to the motor axis is for winding the wire, so as compared with the case where the wire connected to the spool is wound on the outer peripheral surface of the pulley on the output side of the motor than the switching member, it is helpful to reduce the difference in height in the motor axis direction between the end surface on the output opposite side of the motor and the wire connected to the spool. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view schematically showing a drain valve drive device of an embodiment of the present application.

[0027] Figure 2 is a perspective view schematically showing a drain valve drive device of an embodiment of the present application, and shows a state where a part of the housing is removed.

[0028] Figure 3 is a partially cutaway developed view schematically showing a drain valve drive device of an embodiment of the present application.

[0029] Figure 4A is a perspective view schematically showing a rotary output member in a drain valve drive device of an embodiment of the present application.

[0030] Figure 4B is a side view schematically showing a rotary output member in a drain valve drive device of an embodiment of the present application.

[0031] Figure 5A is a perspective view schematically showing a switching member in a drain valve drive device of an embodiment of the present application.

[0032] Figure 5B is another perspective view schematically showing a switching member in a drain valve drive device of an embodiment of the present application.

[0033] Figure 6Ais a perspective view schematically showing a state at the start of the opening operation of the drain valve drive device of the embodiment of the present application.

[0034] Figure 6B is a perspective view schematically showing a state at the end of the opening operation of the drain valve drive device of the embodiment of the present application.

[0035] Figure 7 is a perspective view schematically showing an example of the conventional drain valve drive device.

[0036] Figure 8 is a perspective view schematically showing a part of the internal structure of the drain valve drive device shown in Figure 7

[0037] Figure 9 is a side view schematically showing the drain valve drive device shown in Figure 7

[0038] (Symbol Explanation)

[0039] 100 drain valve drive device

[0040] 110 housing

[0041] 111 first housing

[0042] 112 second housing

[0043] 120 motor

[0044] 121 stator

[0045] 1211 stator core

[0046] 1212 coil

[0047] 122 rotor

[0048] 1221 rotation shaft

[0049] 131 output clutch mechanism

[0050] 1311 first member

[0051] 1312 second member

[0052] 134 planetary gear mechanism

[0053] 1341 sun gear member

[0054] 13411 inner tube

[0055] 13412 outer tube

[0056] 1342 ring gear member

[0057] ​​13421 internal gear

[0058] 13422 external gear

[0059] 1343 planetary gear

[0060] 1344 planetary carrier member

[0061] 13441 planetary support portion

[0062] 13442 output gear

[0063] 135 transition gear

[0064] 136 rotating output member

[0065] 1361 transmission portion

[0066] 13611 opening portion

[0067] 1362 winding portion

[0068] 13621 recess

[0069] 13622 abutting piece

[0070] 1363 cam portion

[0071] 13631 cam groove

[0072] 137 engagement member

[0073] 138 wire

[0074] 139 valve core

[0075] 140 switching member

[0076] 141 support portion

[0077] 1411 main body portion

[0078] 1412 tubular portion

[0079] 1413 long hole portion

[0080] 142 cover housing portion

[0081] 1421 arc-shaped plate

[0082] 1422 flat plate

[0083] 1423 protrusion

[0084] 150 linkage brake mechanism

[0085] 160 terminal

[0086] 171 support shaft

[0087] 172 support shaft

[0088] 173 support shaft

[0089] 174 support shaft DETAILED DESCRIPTION

[0090] Hereinafter, the drain valve driving device according to an embodiment of the present application will be described with reference to the drawings. Figures 1 to 6B The drain valve driving device according to an embodiment of the present application will be described below, in which, Figure 1 FIG. 1 is a perspective view schematically showing a drain valve driving device according to an embodiment of the present application, Figure 2 FIG. 2 is a perspective view schematically showing a drain valve driving device according to an embodiment of the present application, and shows a state in which a part of a housing is removed, Figure 3 FIG. 3 is a partially cutaway developed view schematically showing a drain valve driving device according to an embodiment of the present application, Figure 4A FIG. 4 is a perspective view schematically showing a rotary output member in a drain valve driving device according to an embodiment of the present application, Figure 4B FIG. 5 is a side view schematically showing a rotary output member in a drain valve driving device according to an embodiment of the present application, Figure 5A FIG. 6 is a perspective view schematically showing a switching member in a drain valve driving device according to an embodiment of the present application, Figure 5B FIG. 7 is another perspective view schematically showing a switching member in a drain valve driving device according to an embodiment of the present application, Figure 6A FIG. 8 is a perspective view schematically showing a state at the start of a valve opening operation of a drain valve driving device according to an embodiment of the present application, Figure 6B FIG. 9 is a perspective view schematically showing a state at the end of a valve opening operation of a drain valve driving device according to an embodiment of the present application.

[0091] Here, for convenience of explanation, three directions orthogonal to each other are set as an X direction, a Y direction, and a Z direction, and one side in the X direction is set as XI, the other side in the X direction is set as X2, one side in the Y direction is set as Yl, the other side in the Y direction is set as Y2, one side in the Z direction is set as Zl, and the other side in the Z direction is set as Z2, and further, the Zl direction corresponds to an upper side in actual use, the opposite side of the output of the motor, and the Z2 direction corresponds to a lower side in actual use, the output side of the motor.

[0092] (Overall structure of drain valve driving device)

[0093] As Figures 1 to 3As shown, the drain valve driving device 100 has: a motor 120; and an output clutch mechanism 131, a rotary output member 136, a wire 138, a spool 139, and a switching member 140 provided on the output side (i.e., the Z2 direction side) of the motor 120, in the driving force transmission path from the motor 120 to the spool 139, the driving force of the motor 120 is transmitted in sequence via the output clutch mechanism 131, the rotary output member 136, and the wire 138, the output clutch mechanism 131 is switched between on and off by the switching member 140 that rotates in linkage with the rotary output member 136, and the switching member 140 and the rotary output member 136 each have a rotary axis that is parallel to the axis of the motor 120 (i.e., a rotary axis that is parallel to the Z direction).

[0094] Here, as shown in Figure 1 and Figure 2 , the drain valve driving device 100 has a housing 110 that includes a first case 111 and a second case 112 assembled along the Z direction, the motor 120, the output clutch mechanism 131, the switching member 140, and the rotary output member 136 are provided in an accommodation space enclosed by the first case 111 and the second case 112, one end of the wire 138 is connected to the rotary output member 136, and the other end protrudes to the outside of the housing 110 via an opening provided in the housing 110 and is connected to the spool 139.

[0095] Further, as shown in Figure 2 and Figure 3 , the drain valve driving device 100 also has a linkage brake mechanism 150 provided on the output side of the motor 120 and a transmission mechanism including a plurality of gear members such as a planetary gear mechanism 134 and a transition gear 135, the linkage brake mechanism 150 locks or unlocks a gear ring (in the illustrated example, an outer gear 13422 of an inner gear member 1342 described below) of the planetary gear mechanism 134 depending on whether the driving force of the motor 120 is obtained (here, the linkage brake mechanism can adopt a conventional structure, and will not be described in detail), in the driving force transmission path from the motor 120 to the spool 139, the transmission mechanism including the planetary gear mechanism 134 is provided between the output clutch mechanism 131 and the rotary output member 136, and in a state where the linkage brake mechanism 150 locks the gear ring of the planetary gear mechanism 134 and the output clutch mechanism 131 is on, the driving force of the motor 120 is transmitted in sequence via the output clutch mechanism 131, the transmission mechanism including the planetary gear mechanism 134, the rotary output member 136, and the wire 138 to the spool 139.

[0096] Further, as shown in Figure 1 and Figure 2 , the linkage brake mechanism 150 and the planetary gear mechanism 134 are also provided in the accommodation space enclosed by the first case 111 and the second case 112.

[0097] Further, as Figure 2 indicated, the drain valve driving device 100 also has two terminals 160 that protrude from the motor 120 in a direction perpendicular to the Z direction and then bend in the Z2 direction, and the two terminals 160 are also disposed in the accommodation space surrounded by the first case 111 and the second case 112.

[0098] (Structure of motor)

[0099] As Figure 3 indicated, the motor 120 includes a stator 121 and a rotor 122, in which the stator 121 has a stator core 1211 and a coil 1212 wound around the stator core 1211, the coil wire that constitutes the coil 1212 is connected to the terminals 160, and the rotor 122 is rotatable with respect to the stator 121 about an axis parallel to the Z direction and has a rotation shaft 1221 extending in the Z direction, the rotation shaft 1221 is penetrated by a support shaft 171 that is supported by the case 110 and a support member (in the illustrated example, the stator core 1211) disposed in the case 110 at both ends and extends in the Z direction.

[0100] (Structure of output clutch mechanism)

[0101] As Figure 3 indicated, the output clutch mechanism 131 includes a first member 1311 that is provided to the rotation shaft 1221 of the motor 120 (in the illustrated example, a claw-shaped portion that is integrally formed on the end portion of the rotation shaft 1221 on the Z2 direction side), a second member 1312 that is disposed on the output side of the motor 120 (in the illustrated example, a cylindrical member that is fitted to the portion of the support shaft 171 on the Z2 direction side than the first member 1311, a claw portion is provided on the surface on the Z1 direction side thereof, and a gear portion is provided on the outer circumferential side thereof) than the first member 1311 and is engaged with or separated from the first member 1311 by moving in the axial direction of the motor 120 (in line with the Z direction), and a spring member (not shown) that applies a force that separates the first member 1311 from the second member 1312.

[0102] (Structure of planetary gear mechanism)

[0103] As Figure 3 indicated, the planetary gear mechanism 134 is composed of a sun gear member 1341, an internal gear member 1342, three planetary gears 1343, and a planetary gear carrier member 1344.

[0104] The sun gear member 1341 is a gear member of a double cylinder structure formed by integrating an inner cylinder 13411 formed with a sun gear and an outer cylinder 13412 formed with an input gear as an input portion of the planetary gear mechanism 134 at their upper end portions. The inner cylinder 13411 is supported by the housing 110 and a support shaft 172 provided in the housing 110 and extending in the Z direction, and is penetrated by the support shaft 172 at both ends. The input gear of the outer cylinder 13412 is engaged with the gear portion of the second member 1312, and the sun gear of the inner cylinder 13411 is engaged with the three planetary gears 1343 inside the sun gear member 1341. Thus, the rotation of the second member 1312 is transmitted from the input gear to the planetary gears 1343 via the sun gear.

[0105] The ring gear member 1342 is a substantially cap-shaped gear member formed with an inner gear 13421 at an inner peripheral surface. The ring gear member 1342 is supported by the housing 110 and a support shaft 172 provided in the housing 110 and extending in the Z direction, and is penetrated by the support shaft 172 at both ends. The upper portion of the ring gear member 1342 is fitted in the outer cylinder 13412 of the sun gear member 1341, and an external gear 13422 (corresponding to a ring gear) is formed at the lower end portion exposed from the sun gear member 1341. The external gear 13422 is a flange-shaped spur gear extending in a circular ring shape to the radial outside from the lower end portion of the ring gear member 1342. The inner gear 13421 of the ring gear member 1342 is engaged with the planetary gears 1343, and the external gear 13422 is engaged with the locking gear of the interlocking brake mechanism 150.

[0106] The planetary carrier member 1344 is a member in which a planetary support portion 13441 as a frame body rotatably supporting the planetary gears 1343 and an output gear 13442 as an output portion of the planetary gear mechanism 134 extending downward from the planetary support portion 13441 are integrated. The output gear 13442 of the planetary carrier member 1344 is engaged with the transition gear 135 (i.e., the final gear member), and the transition gear 135 is supported by the housing 110 and a support shaft 173 provided in the housing 110 and extending in the Z direction, and is engaged with the transmission portion 1361 of the rotary output member 136 described below.

[0107] In the planetary gear mechanism 134, whether the rotation of the input gear, i.e., the rotation of the sun gear, can be transmitted to the output gear 13442 is determined by whether the angular position of the second component 1312 is fixed. When the rotation of the second component 1312 is stopped by the locking gear of the linkage braking mechanism 150, the angular position of the inner gear 13421 of the inner gear component 1342 is fixed together with the second component 1312. When the second component 1312 is fixed, the sun gear rotates, and this rotation is transmitted to the planet gear 1343. The planet gear 1343 revolves around the fixed inner gear 13421, causing the output gear 13442 to rotate together with the planetary support 13441. On the other hand, when the second component 1312 is not fixed, the rotation of the sun gear is consumed by the rotation of the planet gear 1343 and the idle rotation of the inner gear 13421, and cannot be transmitted to the output gear 13442.

[0108] (Structure of the rotating output component)

[0109] like Figure 4A and Figure 4B As shown, the rotary output component 136 is integrally formed and is supported by a support shaft 174 extending in the Z direction, which is supported at both ends by the housing 110 and the support member disposed in the housing 110. It also has a transmission part 1361, a winding part 1362 and a cam part 1363.

[0110] The transmission section 1361 is located on the opposite side of the output of the motor 120 compared to the winding section 1362, and contacts the transmission mechanism to transmit the driving force of the motor 120 (in the illustrated example, a gear section is formed on the outer peripheral surface of the transmission section 1361 that meshes with the transition gear 135 included in the transmission mechanism). Furthermore, the transmission section 1361 has an opening 13611 that is recessed or extends from the output side of the motor 120 toward the opposite side of the motor 120's output, and this opening 13611 allows the engaging member 137, which connects to the end of the wire 138 away from the valve core 139, to engage in a detachable manner.

[0111] The portion of the outer peripheral surface of the winding portion 1362 that overlaps with the switching member 140 when viewed in a direction perpendicular to the axis of the motor 120 is used for winding the wire 138. Furthermore, the outer peripheral surface of the winding portion 1362 has a groove 13621 for storing and winding the wire 138. A contact piece 13622 is formed on the output side of the winding portion 1362 near the motor 120, and the switching member 140 rotates in conjunction with the rotation of the rotary output member 136 by contacting the contact piece 13622 in a direction perpendicular to the axis of the motor 120.

[0112] The cam portion 1363 is closer to the output side of the motor 120 than the winding portion 1362, and has a cam groove 13631, which allows the protrusion 1423 of the switching member 140, which serves as a cam follower, to engage from the output side of the motor 120.

[0113] (Structure of the switching component)

[0114] like Figure 2 As shown, the switching component 140 is positioned to overlap (at least partially overlap) the rotary output component 136 when viewed in a direction perpendicular to the axis of the motor 120.

[0115] like Figure 5A and Figure 5B As shown, the switching component 140 has a support portion 141 and a cover and storage portion 142.

[0116] The support portion 141 has a main body portion 1411, a cylindrical portion 1412, and an elongated orifice portion 1413. The main body portion 1411 is plate-shaped with a thickness generally consistent with the Z direction. The cylindrical portion 1412 is located near the edge of the main body portion 1411 and is supported by a support shaft 173 extending in the Z direction, which is supported at both ends by the housing 110 and support members provided within the housing 110, thus becoming the rotation center of the switching member 140. The elongated orifice portion 1413 is located near the edge of the main body portion 1411 away from the cylindrical portion 1412 and is guided by the support shaft 171, which is supported at both ends by the housing 110 and support members provided within the housing 110.

[0117] The cover and housing portion 142 covers and houses at least a portion of the cam portion 1363 and at least a portion of the winding portion 1362 from the output side of the motor 120. The cover and housing portion 142 has an arcuate plate 1421, a flat plate 1422 and a protrusion 1423. The arcuate plate 1421 protrudes from the main body portion 1411 toward the output side of the motor 120. The flat plate 1422 extends from the edge of the arcuate plate 1421 away from the main body portion 1411 in a direction perpendicular to the axis of the motor 120. The protrusion 1423 extends from the position of the flat plate 1422 away from the arcuate plate 1421 toward the opposite side of the output of the motor 120 and can be engaged with the cam groove 13631 from the output side of the motor 120 (in the illustrated example, when viewed along the axis of the motor 120, the cover and housing portion 142 is fan-shaped with the protrusion 1423 as the center).

[0118] The switching component 140 is closer to the output side of the motor 120 than the second component 1312. A cam mechanism is provided between the second component 1312 and the switching component 140 to enable the two to cooperate (in the illustrated example, a protrusion 1414 is provided on the surface of the support portion 141 of the switching component 140 opposite to the output side of the motor 120, and a protrusion that cooperates with the protrusion 1414 as a cam follower is provided on the surface of the second component 1312 on the output side of the motor 120).

[0119] (An example of the operation of the drain valve drive device 100)

[0120] In the drain valve drive device 100, when the motor 120 is not energized, such as Figure 6A As shown, the valve core 139 is located at the position furthest from the housing 110 of the drain valve drive device 100 (in actual use, a force is usually applied to the valve core 139 by a force-applying component such as a spring, which is far away from the housing 110 of the drain valve drive device 100), and the output clutch mechanism 131 is in the engaged state (that is, the first component 1311 and the second component 1312 are engaged with each other and can operate together).

[0121] In the above state, when the motor 120 is energized, on the one hand, the driving force of the motor 120 is transmitted to the linkage braking mechanism 150, thereby locking the outer gear 13422 of the inner gear component 1342 of the planetary gear mechanism 143. On the other hand, the driving force of the motor 120 is transmitted to the input gear of the sun gear component 1341 of the planetary gear mechanism 143 via the output clutch mechanism 131. The sun gear component 1341 rotates, and this rotation is transmitted to the planetary gear 1343. The planetary gear 1343 revolves around the fixed inner gear 13421, causing the output gear 13442 to rotate together with the planetary support 13441, thereby driving the rotary output component 136 to rotate via the transition gear 135. As a result, the wire 138 is wound around the outer peripheral surface of the winding portion 1362 of the rotary output component 136, and the valve core 139 is driven toward the housing 110 near the drain valve drive device 100, forming... Figure 6B The state shown.

[0122] Furthermore, when the rotating output component 136 is from Figure 6AWhen the illustrated position is rotated by a predetermined angle, the abutting piece 13622 of the rotation output member 136 abuts against the switching member 140 from a direction perpendicular to the axis of the motor 120, whereby the switching member 140 rotates in conjunction with the rotation of the rotation output member 136. At this time, the protrusion 1414 of the switching member 140 is separated from the protrusion of the second member 1312, whereby the first member 1311 and the second member 1312 are separated from each other under the action of the spring member, and the driving force of the motor 120 is no longer transmitted to the rotation output member 136, which is held fixed, for example, under the action of a clamping mechanism not shown.

[0123] (EFFECTS OF THE EMBODIMENTS)

[0124] According to the drain valve driving device 100 of the present embodiment, the switching member 140 and the rotation output member 136 overlap when viewed in a direction perpendicular to the axis of the motor 120, and the rotation output member 136 has a winding portion 1362, and the portion of the outer circumferential surface of the winding portion 1362 that overlaps the switching member 140 when viewed in a direction perpendicular to the axis of the motor 120 is wound with the wire 138, and thus, as compared with the case where the wire connected to the spool is wound on the outer circumferential surface of a pulley on the output side of the motor relative to the switching member in the related art, it is possible to reduce the difference in height in the axis direction of the motor 120 between the output side end surface of the motor 120 and the wire 138 connected to the spool 139.

[0125] The present application has been described above with reference to the accompanying drawings, and it will be apparent that the concrete implementation of the present application is not limited to the above-described embodiments.

[0126] For example, in the above-described embodiments, the transmission portion 1361, the winding portion 1362, and the cam portion 1363 of the rotation output member 136 are integrally formed, but are not limited thereto, and the transmission portion 1361, the winding portion 1362, and the cam portion 1363 can be formed separately and assembled together by screws or the like, and the concrete shape of the rotation output member 136 can be appropriately changed as needed.

[0127] Further, in the above-described embodiments, the switching member 140 has a cover receiving portion 142 that covers and receives at least a portion of the cam portion 1363 and at least a portion of the winding portion 1362 from the output side of the motor 120, but is not limited thereto, and the concrete shape of the switching member 140 can be appropriately changed as needed, for example, the switching member 140 can not have the cover receiving portion 142.

[0128] Further, in the above-described embodiments, the concrete structure of the planetary gear mechanism 134 can be appropriately changed as needed, for example, the sun gear member 1341 can not be a gear member of a double-layer cylinder structure, and the number of the planetary gears 1343 is not limited to three.

[0129] It should be understood that the application can, within the scope of the application, freely combine individual parts of the embodiments or appropriately modify, omit individual parts of the embodiments.

Claims

1. A drain valve driving device, comprising: a motor; and an output clutch mechanism, a rotary output component, a wire, a valve core, and a switching component disposed on the output side of the motor, wherein in the driving force transmission path from the motor to the valve core, the driving force of the motor is transmitted sequentially via the output clutch mechanism, the rotary output component, and the wire, the output clutch mechanism is switched between on and off by the switching component, which rotates in conjunction with the rotation of the rotary output component, the switching component and the rotary output component each having a rotation axis parallel to the motor axis, characterized in that, The switching component and the rotary output component overlap when viewed in a direction perpendicular to the motor axis. The rotary output component has a winding portion, the portion of the outer peripheral surface of which overlaps with the switching component when viewed in a direction perpendicular to the motor axis, for winding the wire.

2. The drain valve driving device as described in claim 1, characterized in that, In the driving force transmission path from the motor to the valve core, a transmission mechanism is provided between the output clutch mechanism and the rotary output component. The rotary output component has: A transmission section is located on the opposite side of the motor output than the winding section and contacts the transmission mechanism to transmit the driving force of the motor. as well as The cam portion is located closer to the output side of the motor than the winding portion and has a cam groove. The switching component has a protrusion that acts as a cam follower, the protrusion engaging with the cam groove from the output side of the motor.

3. The drain valve driving device as described in claim 2, characterized in that, The transmission mechanism includes multiple gear components that mesh with each other. The transmission unit meshes with the final stage gear component among the plurality of gear components.

4. The drain valve driving device as described in claim 2, characterized in that, The outer peripheral surface of the winding section has a groove for winding and storing the wire.

5. The drain valve driving device as described in claim 2, characterized in that, The transmission part has an opening that is recessed or extends from the surface of the motor's output side toward the opposite side of the motor's output. A locking member is connected to the end of the wire away from the valve core, and the locking member engages with the opening in a detachable manner.

6. The drain valve driving device as described in claim 2, characterized in that, An abutment piece is formed on the surface of the winding section near the output side of the motor. The switching component rotates in conjunction with the rotation of the rotary output component by abutting the abutment piece from a direction perpendicular to the motor axis.

7. The drain valve driving device as described in claim 2, characterized in that, The switching component has a covered storage section. The covering and receiving portion covers and receives at least a portion of the cam portion and at least a portion of the winding portion from the output side of the motor, and has the protrusion.

8. The drain valve driving device as described in claim 1, characterized in that, The output clutch mechanism includes: A first component is disposed on the rotating shaft of the motor; A second component, located closer to the output side of the motor than the first component, and engaged or disengaged from the first component by moving along the motor axis; and A spring component that applies a force to separate the first component from the second component. The switching component is located closer to the output side of the motor than the second component. A cam mechanism is provided between the second component and the switching component.

9. The drain valve driving device as described in claim 1, characterized in that, The rotating output component is formed as a single piece.

10. The drain valve driving device as described in claim 1, characterized in that, It has a linkage braking mechanism and a planetary gear mechanism located on the output side of the motor. The linkage braking mechanism locks or unlocks the ring gear of the planetary gear mechanism depending on whether it receives driving force from the motor. In the driving force transmission path from the motor to the valve core, the planetary gear mechanism is disposed between the output clutch mechanism and the rotary output component. When the linkage braking mechanism locks the gear ring and the output clutch mechanism is engaged, the driving force of the motor is transmitted to the valve core sequentially via the output clutch mechanism, the planetary gear mechanism, the rotary output component, and the wire.

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