JP2001208096A - Rocking clutch mechanism and valve open/close control device and toilet stool cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rocking clutch mechanism, a valve open/close control device and a toilet stool cleaning device which can transmit a driving force of a motor to on output shaft reliably and with stability without being disengaged, even when the load fluctuation may arise in the course of operation from some reason. SOLUTION: The rocking clutch mechanism comprises a connection gear 22 engaged with an output shaft 6 through an output gear 21, a bi-directionally rotatable motor for driving the connection gear 22, and an intermediate transmission section 23 arranged between the motor and the connection gear 22. And the intermediate transmission section 23, which comprises a sun gear, planetary gears 25 and 26, engaging and disengaging gears 31 and 32 which are engageable and disengageable with the connection gear 22 and a rocking link 33, is so constructed to rotate in such the direction that both of the engaging and disengaging gears 31, 32 and the connection gear 22 are interlocked and the force to actuate the rocking link 33 toward the connection gear 22 works, when the engaging and disengaging gears 31, 32 are to be engaged with the connection gear 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating clutch mechanism for switching the driving direction of an output shaft by utilizing the oscillating operation of an oscillating link, a valve opening / closing control device using the mechanism, and a toilet flushing device. About.

[0002]

2. Description of the Related Art Conventionally, an opening / closing valve, a valve, and the like in a cleaning tank are driven by a motor so that cleaning water in the cleaning tank is automatically adjusted to one of two levels, large and small. Various toilet flushing devices have been proposed. For example, a driving device for an automatic cleaning device described in Japanese Patent Application Laid-Open No. 8-311956 is one type of a device constituting a driving portion of the toilet bowl cleaning device. As shown in FIG. It mainly includes a motor 102 disposed therein, an output shaft 104 to which the drive gear 103 is fixed, and an intermediate transmission unit 105 that transmits the driving force of the motor 102 to the drive gear 103.

[0005] The output shaft 104 penetrates through the inside of the housing 101 so that both sides thereof protrude from the housing 101. The output shaft 104 is bidirectionally driven to rotate by the rotational driving force of the motor 102. Output shaft 104
On one side of the part protruding from the housing 101,
An operation handle (not shown) is attached. On the other hand, the other end protrudes into a cleaning tank (not shown), and a plug member (not shown) in the cleaning tank is suspended from this protruding portion.

[0004] The intermediate transmission portion 105 is formed on one side with a worm wheel 108 meshing with a worm 107 fixed to the output shaft 102a of the motor 102, and a transmission gear 110 having a small gear 109 formed on the other side; 109
Planetary gear 1 that constantly engages with and revolves around small gear 109
A connecting lever 112 for connecting the small gear 109 and the planetary gear 111 so as to be rotatably engaged with each other;
It is composed of

When the motor 102 is driven in a predetermined direction, the driving force is transmitted from the worm 107 to the worm wheel 108, and the worm wheel 108 and the small gear 109 are integrally formed. FIG.
In the direction of arrow A1. Then, the planetary gear 111 engaged with the small gear 109 becomes a small gear 109.
8 revolves (moves) around the small gear 109 in the direction of arrow B1 in FIG. 8 along with the rotation direction (arrow A1), and engages with the drive gear 103 (see FIG. 9). Accordingly, the driving gear 103 receives the driving force of the motor 102, rotates integrally with the output shaft 104 in the direction indicated by the arrow C1 in FIG. 9, and the cleaning water for large cleaning flows out of the tank. I have. At this time, the drive gear 103 is urged in the direction of arrow C2 by the own weight of the plug member suspended from the output shaft 104, and overcomes the bias by the driving force of the motor 102 while overcoming the bias. It rotates in the C1 direction.

When the motor 102 is rotated in the reverse direction, the driving device operates in a direction opposite to the above-described operation.
That is, the small gear 109 rotates in the direction indicated by the arrow A2, and the planetary gear 111 revolves (moves) in the direction indicated by the arrow B2 to engage with the drive gear 103. Thereby, the driving gear 103
However, it receives the driving force of the motor 102 and reversely rotates integrally with the output shaft 104, so that cleaning water for small cleaning flows out of the tank.

As described above, in the driving device described above, the planetary gear 111 is driven by the small gear 10
9 and revolves around the periphery of the motor 9 and transmits the rotational force to the drive gear 103. Therefore, the forward and reverse rotational force of the motor 102 can be transmitted to the output shaft 104, and the rotation in one direction can be increased. Rotation in the other direction can be used for small cleaning. When the planetary gear 111 is stopped at a position where it does not engage with the drive gear 103, the motor 102 and the output shaft 1 are stopped.
Relationship with 04 is severed. Therefore, the operation lever 106 that operates the output shaft 104 becomes free with respect to the motor 102, and the operation lever 106 can be manually rotated to allow the washing water for large washing or small washing to flow. .

[0008]

In the driving device for the automatic cleaning device described above, the transmission gear 110 having the small gear 109 is used.
The planetary gear 111 engaged with the small gear 109 revolves around the small gear 109 and engages with the drive gear 103 by rotating. At this time, the rotation direction of the planetary gear 111 is, as shown by an arrow D1 in FIG.
The direction is opposite to the moving direction (arrow B1) of the connecting lever 112 according to the rotation direction of the small gear 109. Accordingly, the drive gear 103 rotates in the arrow C1 direction against the load in the arrow C2 direction due to the weight of the plug member. Therefore, the planetary gear 111 and the drive gear 103 rotate in directions in which the engagement is easily released.

When a normal rotation operation is performed, the load in the direction of arrow C2 stabilizes the engagement state between the planetary gear 111 and the drive gear 103 to some extent, and the motor 10
2 is reliably transmitted to the drive gear 103. However, the driving gear 103 has an arrow C for some reason.
When an excessive torque is input in one direction, the motor 1
When the balance between the driving force of No. 02 (the holding force of the motor 102 when stopped after driving) and the load of the plug member fluctuates, the state of engagement between the planetary gear 111 and the driving gear 103 is changed. May become unstable instantaneously, and the engagement may be released. When the engagement is released, the drive gear 103 and the output shaft 104 are rotated to their original positions by the weight of the plug member, and the plug member is unexpectedly closed and generates a loud collision sound. Occurs. In addition, the subsequent operation control is affected.

When a so-called link mechanism as described above is used, a friction (friction) mechanism is usually provided between the center gear (small gear 109 in the above-described configuration) that rotates only and the connecting lever 112. Without, small gear 109
Is not efficiently transmitted to the revolution of the planetary gear 111, and the planetary gear 111 rotates only and does not revolve. For this reason, the above-described drive device also has a friction mechanism (not shown) that causes appropriate friction between the coupling lever 112 and the small gear 109. However, during use, friction always occurs between the members, causing a problem that the durability of the members is impaired.

An object of the present invention is to provide a swing clutch mechanism and a valve opening / closing mechanism capable of reliably and stably transmitting the driving force of a motor to an output shaft without disengagement even if a load fluctuates on the way due to any cause. A control device and a toilet flushing device are provided.

[0012]

In order to achieve the above object, a swing clutch mechanism according to the present invention drives a connecting gear engaged with an output shaft directly or via a gear and the like, and drives the connecting gear. It has a bidirectionally rotatable motor and an intermediate transmission unit disposed between the motor and the coupling gear, and the intermediate transmission unit is configured to rotate a sun gear that is rotated by a rotational driving force of the motor, A planetary gear that is always engaged and rotatable and revolves bidirectionally around the sun gear; and a sun gear that is always engaged with the planetary gear and rotates in the same direction as the sun gear and in the same direction as the planetary gear. The sun gear, the planetary gear, and the rotation fulcrum of the engagement / disengagement gear are connected to the engagement / disengagement gear that can be disengaged from the connection gear by revolving around the circumference, and the planetary gear and the engagement / disengagement gear are swung about the sun gear. Rocking to move When the engaging and disengaging gear engages with the connecting gear, the engaging and disengaging gear and the connecting gear rotate in a direction in which the engaging and disengaging gear and the connecting gear both mesh together and in a direction in which a force for urging the swinging link and the connecting gear acts. It is configured as follows.

Therefore, during engagement, the engagement / disengagement gear and the connecting gear rotate in directions in which they are unlikely to come off from each other. As a result, even if an unexpectedly large rotational force is input to the output shaft engaged with the coupling gear during engagement, the engagement between the engagement / disengagement gear and the coupling gear is not easily disengaged, and the rotational force of the motor is reduced. It is reliably transmitted from the engagement gear to the coupling gear. Further, with such a configuration, it is possible to widely cope with a configuration in which the load applied to the output shaft fluctuates.

According to another aspect of the present invention, in addition to the above-described rocking clutch mechanism, the intermediate transmission portion is disposed at a predetermined angle around the sun gear and is always engaged with the sun gear. Two planetary gears that are rotatable and revolvable in both directions around the sun gear, and planetary gears that are always engaged with these planetary gears, rotate in the same direction as the sun gear, and are in an engaged relationship. And two sun gears, two planetary gears, and two sun gears and two planetary gears, which are reciprocally engageable with the coupling gear by revolving around the sun gear in the same direction.
Connecting the respective pivot points of the two engagement / disengagement gears and 2
A swing link for swinging the two planetary gears and the two engagement / disengagement gears around the sun gear, and when the oscillation link swings to switch the engagement between the two engagement / disengagement gears and the connection gear,
Both engagement / disengagement gears pass through a neutral position where neither engagement gear is engaged with the connection gear.

[0015] Therefore, the two planetary gears and the two engaging and disengaging gears respectively engaged with the two planetary gears are spaced apart in the circumferential direction, so that the distance from each of the engaging and disengaging gears to the connecting gear is shortened. By doing so, it is possible to reduce the moving distance of each planetary gear and the disengagement gear due to the revolution. Therefore, there is no need to swing the planetary gear and the disengagement gear,
The operation space for both gears is small and the configuration is compact.

According to another aspect of the present invention, in addition to the above-described swing clutch mechanisms, friction occurs between the swing link and the sun gear, and the friction causes the swing in the rotational direction of the sun gear. The dynamic link swings. For this reason, the rotational force of the sun gear is reliably transmitted to the swing link, and the operation is stabilized.

According to another aspect of the present invention, in addition to the above-described swing clutch mechanisms, friction is generated by magnetic attraction generated between the swing link and the sun gear. For this reason, it is possible to apply the necessary friction to the link mechanism by the magnetic attraction force while keeping the contact between the sun gear and the oscillating link, and it is possible to prevent deterioration due to friction between members. Becomes

According to another aspect of the present invention, in addition to the swing clutch mechanisms described above, when the swing link is swung to a predetermined position at which the engagement between the engagement / disengagement gear and the connecting gear is disengaged. There is provided position detecting means for detecting this, and the driving of the motor is stopped based on the position detected by the position detecting means. Therefore, it is possible to easily stop the motor so that the relationship between the motor and the output shaft is disconnected and the output shaft becomes free with respect to the motor.

Further, in the valve opening / closing control device of the present invention, the valve is opened / closed by operating the output shaft of the swing clutch mechanism described above. Therefore, the drive control device is less likely to malfunction. Also,
According to another aspect of the invention, in addition to the above-described valve opening / closing control device, the degree of opening / closing of the valve can be controlled by stopping the output shaft at a plurality of predetermined angular positions and maintaining the state. Therefore, by rotating the output shaft in the same direction or in both directions, it is possible to freely open a plurality of types of plug members depending on the usage mode, such as for large and small, and for prevention of freezing.

[0020] Further, the toilet flushing apparatus of the present invention comprises:
It has the valve opening / closing control device described above. For this reason, this toilet bowl cleaning apparatus is less likely to cause a failure or malfunction, and does not generate a loud collision sound due to the malfunction.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A swing clutch mechanism according to an embodiment of the present invention will be described below with reference to FIGS. In this embodiment, the swing clutch mechanism is described as being incorporated in the valve opening / closing control device. However, the present invention is not limited to this example, and the swing clutch mechanism of the present invention appropriately switches the rotation direction of the output shaft. Also, it may be incorporated in another device that requires a clutch mechanism for controlling the rotation angle.

As shown in FIG. 1, a valve opening / closing control device 1 incorporating a swing clutch mechanism 11 according to the present embodiment comprises:
It has a casing 5 and an output shaft 6 rotatably inserted through the casing 5. An operation lever 7 for manually driving the valve opening / closing control device 1 is fitted into one end of the output shaft 6. When the output shaft 6 is manually operated using the operation lever 7, the operation lever 7 is moved by the urging force of a coil spring 60 described later.
It is to be returned to the original position.

The other end of the output shaft 6 is connected to the drive shaft 2 which rotates integrally with the output shaft 5. The valve opening / closing control device 1 according to the present embodiment has the drive shaft 2 It is attached to a toilet washing tank so as to protrude inside a washing tank (not shown). In addition, a cam 8 that rotates integrally with the output shaft 6 and the drive shaft 2 is provided at a portion of the drive shaft 2 that protrudes inside the cleaning tank.

A valve operating portion 8b for operating the openable valve of the toilet flushing device is provided at a position where it can come into contact with the cam 8. When the output shaft 6 and the drive shaft 2 are rotated by the motor 2 or manually by the motor 2, the cam 8 is rotated by the rotation of the output shaft 6 and the drive shaft 2. As a result, the valve operating portion 8b in contact with the cam 8 operates according to the outer peripheral surface shape of the cam 8 to control the open / close state of the valve, and the cleaning water flowing from the cleaning tank (not shown) to the toilet bowl. The amount is controlled. In the present embodiment, one cam 8 is provided and one valve is operated. However, it is not particularly necessary to provide one cam, and a plurality of cams and valves may be provided.

As shown in FIGS. 2 and 3, the valve opening / closing control device 1 has a casing 5 and a swing clutch mechanism 11 incorporated in the casing 5. The swing clutch mechanism 11 includes an output shaft 6 that is rotatably inserted into the casing 5 and an output gear 21 that rotates integrally with the output shaft 6.
A connecting gear 22 engaged with the output gear 21;
The motor includes a motor 4 that can rotate bidirectionally to drive the output shaft 6 by rotating the connection gear 22, and an intermediate transmission unit 23 that is disposed between the motor 4 and the connection gear 22.

The intermediate transmission section 23 includes a sun gear 24, two planetary gears 25 and 26 arranged at a predetermined angle around the sun gear 24, specifically, 180 degrees apart, and a sun gear 24. Two disengagement gears 31 and 32 which are respectively arranged at positions 120 degrees apart from the center and are always engaged with the planetary gears 25 and 26, respectively, a sun gear 24 and two planetary gears 25 and 26, and two Engagement gear 3
Oscillating link 3 connecting the respective pivot points 1 and 32
And 3. A detailed description of each member of the intermediate transmission unit 23 will be described later.

The casing 5 is formed by abutting and fixing a first housing 51 and a second housing 52 which are half cases,
The output shaft 6 passes through the first housing 51 and the second housing 52. That is, the first housing 51 is formed with the support hole 51a through which the output shaft 6 is inserted and rotatably supported. On the other hand, the second housing 52 has a support hole 51 a of the first housing 51.
A hollow shaft-shaped support hole portion 52a extending on the hollow shaft in the interior direction of the casing 5 is formed at a position on the same axis as that of the casing 5.

A ridge 53c is formed at the tip of the support hole 52a so as to protrude in a fan shape of about 90 °. One end of the coil spring 60 is hooked on the ridge 53c when the output gear 21 rotates a predetermined angle, specifically, 90 degrees, when viewed from the origin position. When the output gear 21 further rotates in the same direction in a state where the coil spring 60 is hooked on the ridge 53c, the coil spring 60 extends. As a result, a force for returning the output gear 21 to the home position is stored in the coil spring 60. The ridge 53c is disposed so as to enter a groove 21c formed in the output gear 21 described later.

As shown in FIG. 2, a fixed shaft 1 for rotatably supporting the connecting gear 22 is provided on the first housing 51.
A fitting hole 51b for fitting and fixing one end of 5a, and a fitting hole 51c for fitting and fixing one end of a fixed shaft 15b serving as a rotation fulcrum of the sun gear 24 are provided. .
Further, the first housing 51 includes two planetary gears 25,
One end of each of the swing shafts 16a and 16b, which serves as a rotation fulcrum of 26 and is swung by the swing link 33, has guide grooves 55a and 55b into which the respective swing shafts are freely swingably fitted.
Furthermore, the first housing 51 is provided with two engagement / disengagement gears 3.
One ends of the swing shafts 17a and 17b, which serve as pivot points of rotation of the swing shafts 1 and 32 and swing by the swing link 33, have guide grooves 55c and 55d, respectively, which are swingably fitted.

The other ends of the fixed shafts 15a and 15b are respectively fitted into fitting holes formed in a base plate 41 which is mounted on an end of a cup-shaped motor case 40 of the motor 4 and also serves as a lid of the motor case 40. It is fixed. In addition, the swing shaft 16
The other end of each of the guide grooves 4a and 16b
5a and 45b (see FIG. 3) are fitted to be swingable. Further, the other ends of the swing shafts 17a and 17b are swingably fitted into guide grooves 45c and 45d formed on the main plate, respectively.

The first housing 51 is provided with four U-shaped engaging pieces 56a serving as engaging portions with the second housing 52.
(Only two places are shown on one side in FIG. 1). Further, as shown in FIG. 4, the first housing 51 is provided with screw fixing portions 54a and 54b for fixing the second housing 52 with screws.

On the other hand, the base plate 41 is
Engagement projections 41b, 41c, 4 formed on the outer edge of
2d (41c, 41d) out of 1d, and a fitting recess 5 for positioning and fixing the base plate 41 and the motor 4
2b and 52c are provided. The second housing 52 has a circuit board 5 disposed inside the casing 5.
A lead portion 52d for leading a lead wire 50 having one end connected to the cable 9 to the outside of the casing 5 is formed.

Further, the second housing 52 has four engaging projections 57 serving as engaging portions with the first housing 51.
a (only two locations on one side are shown in FIG. 1). Then, each U-shaped engagement piece 56 of the first housing 51
a of the first housing 51 and the second housing 5
The casing 5 is configured by integrally fixing the casing 2 and the casing 2.

In the casing 5 described above, the motor 4
A base plate 41 serving as a lid of the motor 4, members constituting the intermediate transmission unit 23, a connection gear 22, an output gear 21,
The swing link 3 is moved to a predetermined position where a part of the output shaft 6 is disengaged from the engagement between the engaging gears 31 and 32 and the connecting gear 22.
A photo-interrupter 61 is disposed as a position detecting means for detecting that 3 has been swung.

The motor 4 is constituted by a stepping motor capable of bidirectional rotation, and is arranged on the side of the second housing 52 of the casing 5 as shown in FIG. The motor 4 includes a cup-shaped motor case 40, a stator 42 disposed in the motor case 40, a rotor 46 having a rotor magnet 46 a disposed opposite to the stator 42, and a rotatable rotor 46. And a fixed shaft 43 to be supported.

The motor case 40 has a substantially circular bottom portion 4.
0a, and a substantially cylindrical side surface portion 40b extending from the outer peripheral edge portion of the bottom surface portion 40a.
The base plate 41 fits into the upper edge portion of 0b. Then, as described above, this ground plate 41 is
The motor case 40 is positioned with respect to the casing 5 by being fitted and fixed to the housing 52. A part of the side surface part 40b is cut out, and the motor terminal part 49 is opened to the outside of the motor case 40 from the part. The motor terminal 49
Is connected to a circuit board 59 arranged outside the motor case 40.

A substantially circular shaft fixing member 48 is disposed at the center of the bottom portion 40a, and one end of the fixed shaft 43 is fixed to a hole formed at the center thereof. The other end of the fixed shaft 43 is connected to a shaft fixing portion 41 formed on the main plate 41.
e, and both ends of the fixed shaft 43 are supported by the base plate 41 and the bottom surface portion 40a of the motor case 40. The shaft fixing portion 41 e of the main plate 41 is a portion for transmitting the output of the rotor pinion 46 e of the rotor 46 rotatably supported on the fixed shaft 43 to the intermediate transmitting portion 23 disposed on the main plate 41. An opening for projecting the fixed shaft 43 into an external space, a rising portion 41g formed to rise from a part of an edge of the opening, and an opening at an upper edge portion of the rising portion 41g. An eave portion 41h formed so as to cover the hole. On the other hand, in a portion where the fixed shaft 43 of the shaft fixing member 48 is fixed, an urging spring 44 for urging the rotor 46 to the other end side of the fixed shaft 43, that is, the base plate 41 side, is arranged. The rotor 46 is always urged by the biasing spring 44 so that the eaves 4
It is urged to the 1h side.

The motor case 4 configured as described above
0 is a first stator 42a provided in an annular shape so as to arrange the rotor 46 on the inner periphery.
And the second stator 42b are arranged so as to overlap in the axial direction. Each coil 75a of each stator 42a, 42b is connected to the motor terminal 49 and the circuit board 59.
Is connected to the lead wire 50 via the.

The rotor 46 has an annular rotor magnet 46a, a cylindrical rotor output shaft 46c having an insertion hole through which the fixed shaft 43 is inserted at the center, and an outer peripheral surface of the rotor output shaft 46c. And a magnet mounting part 46d formed integrally with the magnet. And
The rotor 46 is rotatably supported by the fixed shaft 43 by passing the insertion hole through the fixed shaft 43.

The rotor magnet 46a faces each pole tooth of the stator 42. The rotor magnet 46a is composed of a permanent magnet, and is alternately NS-polarized in the circumferential direction with 10 poles. Therefore, when power is sequentially supplied to each coil 75a of the stator 42, the rotor 46 generates an attractive / repulsive force due to a magnetic force between the rotor magnet 46a and the stator 42, and rotates. .

The rotor output shaft 46c is disposed so that one end protrudes from an open hole formed in the main plate 41. The protruding portion includes a rotor pinion 46e.
Are formed. The sun gear 24 serving as the first stage gear of the intermediate transmission unit 23 is meshed with the rotor pinion 46e by using the open portion of the shaft fixing unit 41e of the main plate 41. Therefore, when the rotor 46 rotates, the rotation is transmitted to the sun gear 24 from the rotor pinion 46e. With this configuration, the rotational driving force of the motor 4 is transmitted to the connection gear 22 via the intermediate transmission unit 23.

The circuit board 59 described above is held at a predetermined position of the base plate 41. This circuit board 5
9 is a motor connecting portion 59a for connecting the motor terminal portion 49, as shown in FIG.
A photo interrupter connecting portion 59b for connecting the
And an input / output unit 59c.

The configuration of each section of the intermediate transmission section 23 disposed on the base plate 41 will be described in detail below.

The intermediate transmission unit 23 receives the driving force of the motor 4, rotates the sun gear 24 in a predetermined direction, and engages one of the two engagement / disengagement gears 31 and 32 with the connection gear 22, and Is transmitted from the engagement / disengagement gears 31 and 32 to the connection gear 22. When the engagement between the two engagement / disengagement gears 31 and 32 and the connection gear 22 is switched by the swing of the oscillation link 33, the engagement / disengagement gears 31 and 32 are switched.
32 pass through a neutral position in which neither of them is engaged with the connecting gear 22. When the neutral position is reached, this is detected by the photo-interrupter 61 described above.

The sun gear 24 is rotated by the rotational driving force of the motor 4, and revolves the planetary gears 25 and 26 and the disengagement gears 31 and 32 by the rotational force.
The sun gear 24 is rotatably supported by the above-described fixed shaft 15b, and the fixed shaft 15b is a rotation fulcrum of the sun gear 24.

As shown in FIG. 2, the sun gear 24 has an input tooth portion 24a meshed with the rotor output shaft 46c and an output tooth portion 24b constantly engaged with the two planetary gears 25 and 26.
And The input tooth portion 24a and the output tooth portion 24
b has a relationship of coaxially arranged gears having different diameters which are integrally formed and are integrally rotated. Therefore, the rotor output shaft 46 of the motor 4
When c rotates, the rotation is received by the input teeth portion 24a from the rotor pinion 46e and rotated, and the rotational force is transmitted to the two planetary gears 25 and 26 from the output teeth portion 24b. The fixed shaft 15b has a swing link 33.
And a plate-shaped W-shaped resin plate 34 and a metal plate 3
5 is inserted so as to sandwich the sun gear 24.

On the side of the sun gear 24 facing the metal plate 35, a four-pole magnetized magnet 24c for generating magnetic attraction between the sun gear 24 and the metal plate 35 when the sun gear 24 rotates. It is buried. As a result, when the sun gear 24 rotates, a load is applied to the rotation by the magnetic attraction, and friction occurs due to magnetism. Therefore, when the sun gear 24 rotates,
The swing link 33 swings in the rotational direction of the sun gear 24 due to friction between the swing gear 33 and the metal plate 35. Note that this friction mechanism utilizes magnetic attraction, and the swing link 33 and the sun gear 24 are substantially non-contact. Therefore, the durability of the members becomes good.

The planetary gears 25 and 26 are rotatably supported by swing shafts 16a and 16b connecting a resin plate 34 and a metal plate 35 constituting a swing link 33, respectively. That is, the swing shafts 16a and 16b serve as pivot points of the planetary gears 25 and 26, respectively. The planetary gear 25 is always engaged with the sun gear 24 and the disengagement gear 31, respectively, and reciprocates around the sun gear 24 in both directions by the swing of the swing link 33 due to the rotation of the sun gear 24, and the sun. The rotation of the gear 24 is transmitted to the engagement / disengagement gear 31. On the other hand, the planetary gear 26 is always engaged with the sun gear 24 and the disengagement gear 32, respectively,
The swing of the swing link 33 due to the rotation of the sun gear 24 revolves around the sun gear 24 in both directions and transmits the rotation of the sun gear 24 to the engagement / disengagement gear 32.

Each of the engaging and disengaging gears 31 and 32 includes a swing link 33.
Are rotatably supported on swing shafts 17a and 17b connecting the resin plate 34 and the metal plate 35, respectively. That is, the swing shafts 17a and 17b are
The pivots 1 and 32 serve as pivot points.

The engagement / disengagement gear 31 is always engaged with one of the planetary gears 25, and when the planetary gear 25 rotates by the rotation of the sun gear 24, it rotates in the same direction as the rotation direction of the sun gear 24. That is, the rotation direction is the same as the swing direction of the swing link 33 accompanying the rotation of the sun gear 24. At the time of this rotation, the disengagement gear 31
Revolves around the sun gear 24 in the same direction as the planetary gear 25 by the swing of the swing link 33. By this revolution, the engagement / disengagement gear 31 can be engaged / disengaged with the connection gear 22,
When engaged, the rotation of the sun gear 24 rotated by the driving force of the motor 4 is transmitted to the connection gear 22.

The engagement / disengagement gear 31 configured as described above causes the connecting gear 22 to swing in the direction indicated by the arrow B in response to the rotation of the sun gear 24 in the direction indicated by the arrow A in FIG.
And is adapted to be engaged. Then, the rotation direction of the engagement / disengagement gear 31 at this time is the same direction (the arrow C direction) as the rotation direction of the sun gear 24 (the arrow A direction) as described above. For this reason, the engagement / disengagement gear 31 engages with the connecting gear 22 in the direction in which the teeth mesh (in the direction in which the force does not escape), and the rotation in the mutually engaging direction causes the swing link 33 to connect the connecting gear 22. The force to urge the side works. As a result, even if an excessive force is input to the output shaft 6 for some reason and the connecting gear 22 rotates with an excessive rotational force in the driving direction (the direction indicated by the arrow D), the excessive rotational force causes the engagement / disengagement gear 31 to rotate. And the coupling gear 22 are not disengaged.

On the other hand, the disengagement gear 32 is connected to the other planetary gear 2.
6, the planet gear 26 is rotated by the rotation of the sun gear 24, and rotates in the same direction as the rotation direction of the sun gear 24. That is, the direction of rotation is
The swing direction of the swing link 33 accompanying the rotation of the sun gear 24 is the same. During this rotation, the engagement / disengagement gear 32 revolves around the sun gear 24 in the same direction as the planetary gear 26 by the swing of the swing link 33. By this revolution, the engagement / disengagement gear 32 can be freely engaged / disengaged from the connection gear 22, and transmits the rotation of the sun gear 24 rotated by the driving force of the motor 4 to the connection gear 22 when engaged. It has become.

The engaging / disengaging gear 32 constructed as described above is used.
Are engaged with each other in a direction in which the teeth mesh with each other by rotating the sun gear 24 in the direction opposite to the direction indicated by the arrow A symmetrically with the engagement and disengagement gear 31. A force for urging the oscillating link 33 toward the connecting gear 22 is exerted in some cases. Therefore, similarly to the engagement relationship between the disengagement gear 31 and the connection gear 22 described above, the connection gear 22 does not come off due to excessive rotation in the direction opposite to the arrow D direction.

The W-shaped resin plate 34 and the metal plate 35 which constitute the swing link 33 are each provided with an insertion hole which is inserted through the fixed shaft 15b which supports the sun gear 24. And these insertion holes are fixed to the fixed shaft 15b.
Has been inserted. As described above, when the sun gear 24 rotates, friction is generated by the non-contact magnetic attraction between the swing link 33 and the magnet 24c embedded in the sun gear 24. Therefore, the swing link 3
Numeral 3 swings in the direction of rotation about the fixed shaft 15b by rotation of the sun gear 24.

The resin plates 34 and the metal plate 35 are provided with swinging shafts 16a and 16b for rotatably supporting the planetary gears 25 and 26, and swinging shafts for rotatably supporting the engaging and disengaging gears 31 and 32, respectively. Both ends of the driving shafts 17a and 17b are
Each is inserted and fixed. And these swing shafts 1
6a, 16b, 17a, and 17b are respectively provided with guide grooves 55a to 55d formed in the casing 5 and the main plate 4a.
The guide grooves 45a to 45d are movable while being guided by the guide grooves 45a to 45d, respectively.

A slit 34a (see FIG. 3) that can face the photointerrupter 61 is formed in the resin plate 34 that constitutes a part of the swing link 33. When the slit hole 34a is going to pass through the photo interrupter 61, the slit hole 34a is inserted into the photo interrupter 61.
The detection result is input to a control device (not shown) via the circuit board 59 and the lead wire 50. As a result, the control device recognizes that the swing link 33 is at the neutral position. The control device is
When the swing link 33 comes to the neutral position, the supply of electric power to the motor 4 is stopped, and the driving of the motor 4 is stopped.

Further, the resin plate 34 is provided with an oil fence 34b (see FIGS. 2 and 3) formed so as to surround a part of the periphery near the upper end portion of the sun gear 24. The oil fence 34b serves as a protective wall for preventing the rotation lubricating oil of the sun gear 24 from scattering toward the photointerrupter 61 due to the rotation of the sun gear 24.

The connecting gear 22 is a gear portion of the output gear 21 fixed to the output shaft 6 connected to the drive shaft 2 for controlling opening and closing of a valve in a washing tank (not shown) of the toilet bowl washing device. 21b. As shown in FIGS. 2 and 3, the connecting gear 22 is rotatably supported on the fixed shaft 15a, and is capable of engaging and disengaging with each of the engaging and disengaging gears 31 and 32, and the output gear 21. And an output tooth portion 22b which is always engaged. This input tooth part 2
The 2a and the output tooth portion 22b are coaxially arranged and integrally formed with gears having different diameters, and are integrally rotated. Therefore, when the disengagement gears 31 and 32 rotate while engaging with the input teeth 22a, the rotation causes the input teeth 22a and the output teeth 22b to rotate.
Rotate integrally, and transmit the rotational force to the output gear 21.

The output gear 21 is press-fitted and fixed to the output shaft 6 and rotates integrally with the output shaft 6. As shown in FIG. 2, the output gear 21 includes a hollow shaft portion 21 a for press-fitting and fixing the output shaft 6, and a gear portion 21 b constantly engaged with the connection gear 22. Note that the shaft portion 21a and the gear portion 21b are integrally formed. A groove 21c is formed in the entire circumference in the circumferential direction near the center of rotation of one surface of the gear portion 21b, that is, at a position close to the shaft portion 21a. A coil spring 60 is arranged in the groove 21c to return the output gear 21 to the home position when the output gear 21 rotates integrally with the output shaft 6.

As shown in FIG. 3, the groove 21c is provided with hooks 60a, 60b formed at both ends of the coil spring 60.
A large groove portion 21d slightly wider than the length of the large groove portion 21d.
It is formed from a small groove 21e having a width smaller than d. Steps 21f and 21g are formed at both ends of the small groove 21e. When the output gear 21 rotates in the direction of the arrow E, the stepped portion 21f hooks one of the hooks 60a, which is one end of the coil spring 60, and moves the hooked portion 60a in the direction of the arrow E. On the other hand, step 21
g is such that when the output gear 21 rotates in the direction of arrow F, the other hook portion 60b, which is the other end of the coil spring 60, is hooked, and the hook portion 60b is moved in the direction of arrow F.

When the output gear 21 rotates in the direction of the arrow E, the other hook 60b of the coil spring 60
The ridge 53c formed in the support hole 52a of the second housing 52 that has entered the groove 21c prevents its rotation. Therefore, the coil spring 60 extends in the direction indicated by the arrow E, and conversely attempts to contract in the direction indicated by the arrow F.
On the other hand, when the output gear 21 rotates in the direction indicated by the arrow F, the one hook 60a of the coil spring 60 is similarly prevented from rotating by the ridge 53c. for that reason,
The coil spring 60 extends in the direction indicated by arrow F, and attempts to contract in the direction indicated by arrow E.

As described above, in the valve opening / closing control device 1 of the present embodiment, the output gear 2 that rotates integrally with the output shaft 6 is used.
When the motor 1 is rotated to one of the two by the driving force of the motor 4, a force acts to return the output gear 21 toward the origin position. However, when driven by the motor 4, the output shaft 6 is driven by motor control because the return force of the coil spring 60 is inferior to the drive force of the motor 4. Further, when the motor 4 is temporarily stopped while the output gear 21 is rotated to one of them, the motor 4
Since the respective gears interposed between the output gear 21 and the output gear 21 mesh with each other, the output gear 21 cannot be rotated in the home position direction by the force of the coil spring 60.

Further, even when the two disengagement gears 31 and 32 are disconnected from the connection gear 22, that is, in a neutral state, the cam surface of the cam 8 provided on the output shaft 6 operates the valve. Because it is in contact with the part 8b,
The output gear 21 rotating integrally with the output shaft 6 having the cam 8 cannot be rotated in the home position direction by the force of the coil spring 60. Therefore, in each of the above situations, the output shaft 6 is held or driven at a predetermined rotation angle. As described above, the coil spring 60 does not act to return the output shaft 6 to the home position when the output shaft 6 is under normal drive control by the motor 4, and the coil spring 60 does not operate after the output shaft 6 is manually driven. Used for the return operation of the output shaft 6.

In the valve opening / closing control device 1 of the present embodiment, after the motor 4 is driven in a predetermined direction to engage the engaging / disengaging gear 32 with the connecting gear 22, the output shaft 6 is moved from the origin position to, for example, An operation of rotating the motor 4 by 180 degrees in the clockwise direction (the direction of arrow F) to stop the motor 4 is possible. Regarding this stop operation, the motor 4 may simply be stopped after the rotation, but in the present embodiment, as shown in FIG. After the engagement / disengagement gear 31 is engaged with the connecting gear 22 in the biting direction via the neutral position described above by swinging the motor 33 in the opposite direction, the motor 4
To stop.

With this configuration, when the output shaft 6 is restarted to rotate in the reverse direction, the rising can be smoothly started by driving the motor. Also,
In this embodiment, a plurality of stop positions, such as a clockwise position of 180 degrees, a clockwise position of 90 degrees (not shown), and a position rotated counterclockwise by 90 degrees (see FIG. 7), are set. I have. When the motor 4 is rotated in the reverse direction to rotate the output shaft 6 to the opposite side via the neutral position and then stop the motor 4, the connection between the motor 4 and the output shaft 6 is lost. The output shaft 6 attempts to rotate due to the biasing force of the coil spring 60 described above, but the rotation is prevented because the cam 8 rides on the valve operating portion 8b. In other words, the return of the output shaft 6 to the home position at the neutral position is prevented by the cam surface shape of the cam 8.

Further, in the present embodiment, as described above, when the output shaft 6 is rotated, the coil spring 60 expands and attempts to return the output shaft 6 toward the origin position. In order to prevent the rotation of the shaft 6, as shown in FIG. 7, the motor 4 is driven in the opposite direction so that the motor 4 is in the neutral position where the connection between the motor 4 and the output shaft 6 is broken.
May be stopped. As shown in FIG. 7, even when both the engaging and disengaging gears 31 and 32 are separated from the connecting gear 22 and the motor 4 is disconnected from the output shaft 6, the cam 8 prevents the output shaft 6 from rotating. This is because the output shaft 6 can be stopped at that position by the coil spring 60 "zero load". With such a configuration, there is an effect that the rotation operation of the output shaft 6 can always be performed by motor control except during manual operation.

By providing a plurality of stop positions as described above, these stop states can be changed according to various specifications such as for large washing, small washing, manual operation, and antifreeze mode. You will be able to make settings. That is, in the valve opening / closing control device of the present embodiment, a predetermined angular position (for example, 18 degrees clockwise from the origin position as described above).
The output shaft 6 is stopped by stopping the motor 4 at 0 degree and 90 degrees, or 90 degrees in the counterclockwise direction or the origin position itself, and the degree of opening and closing of the valve can be controlled by maintaining the state. .

That is, the valve opening / closing control device 1 configured as described above drives the valve in the washing tank with the motor 4 (see FIG. 2 for details) capable of rotating in both directions, thereby cleaning water in the washing tank. Is used in a toilet flushing device for flushing a toilet (not shown) in various amounts in a large flush / small flush or other modes.

The operation of the valve opening / closing control device 1 for a toilet flushing apparatus provided with the swing clutch mechanism 11 of the above-described embodiment configured as described above will be described.

Normally, when the motor 4 is stopped, the valve opening / closing control device 1 which is a part of the toilet flushing device is in a position where the two disengagement gears 31 and 32 do not engage with the connecting gear 22 (neutral position). ) Is controlled so that the swing link 33 is arranged.

In this state, the motor 4 capable of bidirectional rotation
Is driven to one side under the control of an external control device (not shown), the rotor output shaft 46c of the motor 4 rotates to one side. Then, the sun gear 24 engaged with the rotor pinion 46e formed on the rotor output shaft 46c rotates in the direction of arrow A in FIG. When the sun gear 24 rotates in the direction indicated by the arrow A, friction occurs due to magnetic attraction between the swing link 33 and the sun gear 24. Therefore, the swing link 33 corresponds to the rotation direction of the sun gear 24. Swinging in the direction (arrow B direction). Thus, the planetary gears 25 and 26 and the disengagement gears 31 and 32 rotatably supported by the swing link 33 revolve around the sun gear 24.

The rotation of the sun gear 24 at this time is as follows.
Both planetary gears 25 and 26 always engaged with the sun gear 24
Are transmitted to the respective engagement / disengagement gears 31 and 32 via the. As a result, the engagement / disengagement gear 31 rotates in the direction of arrow C, and the engagement / disengagement gear 32 rotates in the direction of arrow C ′, that is, in the same direction as the rotation direction of the sun gear 24 and the swing direction of the swing link 33.
By this operation, the engagement / disengagement gear 31 moves while rotating in the arrow C direction and engages with the connection gear 22. Conversely, the engagement / disengagement gear 32 moves in a direction away from the connection gear 22.

By receiving the rotation of the engagement / disengagement gear 31 at this time, the connecting gear 22 rotates in the direction of arrow D. That is, the engagement / disengagement gear 31 and the connection gear 22 are engaged in a direction in which the teeth mesh with each other and in a direction in which a force for urging the swing link 33 toward the connection gear 22 acts. Therefore, even if the connecting gear 22 is rotated by an excessive force in the direction of arrow D during this engaged state for some reason, the disengaging gear 31 and the connecting gear 2
2 is not disengaged and the output shaft 6 is always controlled by the motor.
Can be controlled.

When the connecting gear 22 rotates in the direction of arrow D as described above, the rotation is transmitted to the output gear 21, and the output gear 21 rotates integrally with the output shaft 6 in the direction of arrow E. This rotation direction is a direction in which the output shaft 6 is rotated counterclockwise (= minus direction) from the origin position (0 degrees). When the output shaft 6 is rotated by a predetermined rotation angle, for example, 90 degrees, and the motor 4 is temporarily stopped by this operation, the output shaft 6 is maintained at the rotation angle.

In this embodiment, after the output shaft 6 is rotated by a predetermined angle, the output shaft 6 is held at a predetermined position by controlling the driving of the motor 4 in the order of stop, reverse, and re-stop as described above. It is supposed to. This is because when the output shaft 6 rotates to the above-mentioned position and stops, the coupling gear 22 tries to rotate in the direction opposite to the arrow D due to the force of the coil spring 60 returning the output shaft 6 toward the origin position. However, the output shaft 6 does not rotate because the gears forming the intermediate transmission portion 23 are meshed with each other. Thereafter, by reversely rotating the motor 4 from this state and stopping it again, the connection between the motor 4 and the output shaft 6 is momentarily disconnected (because the motor 4 passes through the neutral position). The output shaft 6 is brought into contact with the portion 8b.
Is prevented, the output shaft 6 is held at the above-described predetermined position.

In this manner, the output gear 21 is connected to the output shaft 6
When a predetermined angle is rotated against the force of the coil spring 60 and stopped at that angle, a valve (not shown) of the toilet flushing device is opened by a predetermined amount, and an amount of washing water corresponding to the opening amount is discharged. Spilled from wash tank.

When the motor 4 is rotated in a direction opposite to the initial driving direction after a predetermined amount of washing water is supplied, the motor 4 is already switched at the time of the above-described position holding control of the output shaft 6 and is engaged with the connecting gear 22. The driving force of the motor 4 is smoothly transmitted from the engaging / disengaging gear 32 to the output shaft 6 via the connecting gear 22. Thus, the output shaft 6 starts rotating in the direction of the origin position (return direction). When the output shaft 6 is rotated to the home position by driving the motor 4 for a predetermined number of steps, the valve is closed with this operation. Thereby, the discharge operation of the cleaning water ends.

On the other hand, the motor 4 is controlled so as to stop after driving the output shaft 6 to the origin position. After this stop, the output shaft 6 is driven in a direction opposite to the driving direction when returning the output shaft 6 to the origin position (= the same direction as the original driving direction). By this reverse rotation drive, the sun gear 24 rotates while swinging the swing link 33 so that the engagement / disengagement gear 32 engaged with the connection gear 22 is separated from the connection gear 22.
When the slit hole 34a formed in the resin plate 34 of the swing link 33 moves to a position facing the photointerrupter 61, the photointerrupter 61 detects this, and the motor 4 is stopped at the time of this detection. This allows
The oscillating link 33 stops at a predetermined position (neutral position) where both the engaging and disengaging gears 31 and 32 are not engaged with the connecting gear 22, whereby the motor 4 and the output shaft 6 are connected to each other. The engagement relationship is completely broken. After this, the output shaft 6 can be easily driven manually by using the operation lever 7.

In the above description, the sun gear 24 is rotated in the direction of arrow A to engage the disengagement gear 31 with the connecting gear 22, and the output gear 21 is rotated in the direction of arrow E (counterclockwise). Although the case where the output shaft 6 is rotated to rotate the output shaft 6 in the minus direction from the origin position has been shown,
(In the opposite direction), the swing link 33 operates in the opposite direction to that described above, and the disengagement gear 32
2 is engaged. As a result, the output gear 21 rotates in the direction indicated by the arrow F (clockwise direction = positive direction), and the output shaft 6 rotates in the positive direction from the origin position. It should be noted that the method of holding the position of the output shaft 6 also corresponds by performing the operation in the opposite direction to the above-described operation.

In the present embodiment, if a power failure occurs while the output shaft 6 is being rotated to one of the directions by the driving force of the motor 4, the output shaft 6 is held at the rotation position and the valve is closed. The open state is maintained. However, when the operation lever 7 is rotated in the direction opposite to the direction in which it was rotated immediately before the power failure, the force is transmitted from the output gear 21 to the connection gear 22, and the connection gear 22 rotates.

The direction of rotation of the connecting gear 22 at this time is opposite to the direction at the time of driving, that is, the connecting gear 22 and the disengagement gear 31,
The direction of engagement with one of the 32 is not the direction of engagement but the direction of easy release. In addition, the rotation transmitted to one of the engagement / disengagement gears 31 and 32 is transmitted to the sun gear 24 via the planetary gears 25 and 26, and the rotation direction of the sun gear 24 by this operation is changed to the engaged engagement. The direction in which the swing link 33 is operated is a direction in which the removal gears 31 and 32 are separated from the connection gear 22. Therefore, by operating the operation lever 7 in the opposite direction, the engagement relationship between the motor 4 and the output shaft 6 can be easily canceled. The output shaft 6 after the engagement is released is returned to the origin position by the force of the coil spring 60 described above.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention. . For example, the swing clutch mechanism 1 of the present invention
In the valve opening / closing control device 1 provided with the motor 1, the motor 4 is configured by a stepping motor and the driving amount of the output shaft 6 is controlled by the number of steps. However, other motors such as a DC motor and an AC motor are used. May be configured. In this case, when a unidirectional rotation motor is used, the sun gear 24 is configured to be able to rotate bidirectionally by a train of wheels or the like. In this specification, including such a case, it is referred to as a bidirectionally rotatable motor. In the case of a DC motor, the output shaft 6
By controlling the driving amount of the output shaft 6 by some means, for example, driving it for a predetermined time, the problem of over-rotation of the output shaft 6 does not occur.

In the above embodiment, the sun gear 2
The two swinging gears 25 and 26 and the disengagement gears 31 and 32 are disposed on both sides of the rotation gear 4, respectively. Although the engagement / disengagement gear 32 is engaged with the connection gear 22 by rotation in the direction, the swing gear and the engagement / disengagement gear may be each one. When the two engaging and disengaging gears 31 and 32 are arranged at positions separated by a predetermined angle as in the above-described embodiment, the swing range of the swing link 33 can be narrowed, and the space in the casing 5 is effectively used. Therefore, such a configuration is employed in the above-described embodiment.

In the above-described valve opening / closing control device 1,
Between the output gear 21 rotating integrally with the output shaft 6 and the two engagement / disengagement gears 31 and 32, there is disposed a connection gear 22 that is detachable from the engagement / disengagement gears 31 and 32. The gear 22 may also be omitted by also serving as the output gear 21, and the engagement / disengagement gears 31 and 32 may be directly engageable / disengageable with the output gear 21. Conversely, a gear may be interposed between the output gear 21 and the connecting gear 22.

Further, in the valve opening / closing control device 1 described above, when the output gear 21 rotates to return the output shaft 6 to the original position, an urging force for returning the rotated output gear 21 to the original position is applied. Although the coil spring 60 is provided, the coil spring 60 may be omitted. In this case, the output shaft 6
After returning to the original position after driving the
Is driven in the reverse direction to swing the swing link 33 to the opposite side to engage the other engagement / disengagement gears 31, 32 with the connection gear 22,
What is necessary is just to drive the output shaft 6 to the opposite side by the driving force of the motor 4.

In the valve opening / closing control device 1 described above,
The magnet 24c is embedded in the sun gear 24, and the sun gear 2
By generating friction by magnetic attraction generated between the metal plate 35 of the swing link 33 and the metal plate 35 of the swing link 33,
The swing link 33 is configured to swing reliably.
However, this magnet is connected to two planetary gears 25,
26, or provided on one or both of the two engagement / disengagement gears 31, 32, or by appropriately combining these four locations.
A load may be applied to the rotation of at least one of these four gears 25, 26, 31, 32. Even with such a configuration, the swing link 33 swings more reliably than in a state where there is no friction, and is almost non-contact with good durability. Further, as means for generating friction, a spring member may be used in addition to a magnet that exerts a magnetic attractive force.

Further, in the valve opening / closing control device 1 described above, the photo interrupter 61 is used as the position detecting means for detecting the neutral position of the swing link 33, but other sensors such as a magnetic sensor are used as the position detecting means. May be used.

[0088]

As described above, according to the swing clutch mechanism of the present invention, when the engagement / disengagement gear engages with the connecting gear,
The rotation is made in a direction in which the engagement gear and the connection gear mesh with each other and in a direction in which a force for urging the swing link toward the connection gear acts. For this reason, at the time of engagement, the engagement / disengagement gear and the connection gear rotate in directions in which they are unlikely to be disengaged from each other, so that the driving force of the motor is more reliably and efficiently transmitted in the output shaft direction. As a result, even if an unexpectedly large rotational force is input to the output shaft engaged with the coupling gear during engagement, the engagement between the engagement / disengagement gear and the coupling gear is not easily disengaged, and the reliability of operation is reduced. It is possible to provide a high swing clutch mechanism.

Further, the valve opening / closing control device and the toilet flushing device of the present invention are provided with a swing mechanism having the above-described effects. When the valve opening / closing control device is configured to stop the output shaft at a plurality of predetermined angular positions and maintain the state, for example, the degree of opening / closing of the valve can be freely controlled. Can be freely opened / closed in a plurality of types according to the mode of use, such as for large and small sizes, and for freezing prevention.

[Brief description of the drawings]

FIG. 1 is a side view showing an example in which a valve opening / closing control device incorporating a swing clutch mechanism according to an embodiment of the present invention is attached to a cleaning tank.

FIG. 2 is a sectional development view showing an internal structure of the valve opening / closing control device shown in FIG.

FIG. 3 is a plan view of the valve opening / closing control device of FIG. 2 with the first housing removed, as viewed from the direction of arrow III in FIG. 2;

FIG. 4 is a plan view of the valve opening / closing control device of FIG. 2 with the first housing attached, as viewed from the direction of arrow III in FIG. 2;

FIG. 5 is a side view of the circuit board of the valve opening / closing control device of FIG. 3 as viewed from the direction of arrow V in FIG. 3;

FIG. 6 is a view showing a relationship among an intermediate transmission portion, a connecting gear, and an output shaft of the valve opening / closing control device of FIG. 2; after the output shaft is rotated 180 degrees clockwise from the origin position, the motor is reversely rotated; FIG. 7 is a diagram showing a state in which the swing clutch mechanism is switched.

FIG. 7 is a diagram showing a relationship between an intermediate transmission unit, a connecting gear, and an output shaft of the valve opening / closing control device of FIG. 2; after the output shaft is rotated counterclockwise by 90 degrees from the origin position, the motor is rotated reversely; FIG. 5 is a diagram showing a state in which the swing clutch mechanism is in a neutral position.

FIG. 8 is an internal structural view showing a driving device of a conventional automatic cleaning device.

9 is an internal structural diagram showing a state where a motor of the automatic cleaning device of FIG. 8 is driven in a predetermined direction to move a connecting lever.

[Explanation of symbols]

 Reference Signs List 1 valve opening / closing control device 4 motor 6 output shaft 11 swing clutch mechanism 15b fixed shaft (rotation fulcrum of sun gear) 16a, 16b swing shaft (rotation fulcrum of each planetary gear) 17a, 17b swing shaft (each shaft) 21) Output gear 22 Connecting gear 23 Intermediate transmission unit 24 Sun gear 25, 26 Planetary gear 31, 32 Disengagement gear 33 Swing link 61 Photo interrupter (position detecting means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F16H 3/40 F16H 3/40 37/12 37/12 A F16K 31/04 F16K 31/04 B 31/53 31/53 F term (reference) 2D038 JF00 JH12 KA26 3H062 BB04 BB19 CC01 CC17 EE03 FF07 FF35 FF41 HH03 HH07 HH10 3H063 AA10 BB01 BB24 BB50 DA03 DA14 DB36 FF01 GG06 GG11 3J02 EB12 EB23 EB28 EB23 EB28 EB28 EB23 GA40 3J056 AA04 AA63 BA04 BB22 DA02 GA04 GA27

Claims (8)

[Claims] 1. A connecting gear engaged directly or via a gear or the like with an output shaft, a bidirectional rotatable motor for driving the connecting gear, and a motor disposed between the motor and the connecting gear. And an intermediate transmission section, wherein the intermediate transmission section comprises:
A sun gear that is rotated by the rotational driving force of the motor, a planetary gear that is always engaged with the sun gear and is rotatable and revolves around the sun gear in two directions, and is always engaged with the planetary gear; An engagement / disengagement gear that rotates in the same direction as the sun gear and revolves around the sun gear in the same direction as the planetary gear, thereby enabling and disengaging the connection gear;
A swing link that connects respective rotation fulcrums of the sun gear, the planetary gear, and the engagement / disengagement gear, and swings the planetary gear and the engagement / disengagement gear around the sun gear. When the removal gear is engaged with the connection gear, the engagement / disconnection gear and the connection gear rotate in a direction in which both engage with each other and in a direction in which a force for urging the swing link toward the connection gear acts. An oscillating clutch mechanism, comprising: 2. The intermediate transmission unit is disposed at a predetermined angle around the sun gear and at a predetermined angle around the sun gear, and is always engaged with the sun gear so as to be rotatable. And two planetary gears that can revolve in both directions, and always engage with these planetary gears, rotate in the same direction as the sun gear, and rotate around the sun gear in the same direction as the planetary gears that are in the engagement relationship. Two engagement / disengagement gears which can be alternately engaged / disengaged with the connection gear by revolving, and connect the respective rotational fulcrums of the sun gear, the two planetary gears and the two engagement / disengagement gears, and A swing link for swinging the planetary gear and the two disengagement gears about the sun gear, wherein the oscillation link swings to switch the engagement between the two engagement / disengagement gears and the connection gear; When 2. The rocking clutch mechanism according to claim 1, wherein both the engagement and disengagement gears pass through a neutral position where neither of the engagement gears engages with the coupling gear. 3. A friction is generated between the swing link and the sun gear, and the friction causes the swing link to swing in a rotation direction of the sun gear. 3. The swing clutch mechanism according to claim 1, wherein: 4. The swing clutch mechanism according to claim 3, wherein the friction is generated by a magnetic attraction force generated between the swing link and the sun gear. 5. A position detecting means for detecting when the oscillating link is oscillated to a predetermined position at which the engagement between the disengaging gear and the connecting gear is disengaged, the position detecting means comprising: 5. The swing clutch mechanism according to claim 1, wherein the drive of the motor is stopped based on the detection of the position. 6. A valve opening / closing control device, wherein a valve opening / closing operation is performed by operating the output shaft of the oscillating clutch mechanism according to any one of claims 1 to 5. 7. The valve opening / closing control device according to claim 6, wherein the degree of opening / closing of the valve can be controlled by stopping the output shaft at a plurality of predetermined angular positions and maintaining the state. 8. A toilet flushing device comprising the valve opening / closing control device according to claim 6. Description: