JP3644935B2 - Low tank water inlet opening and closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water supply opening / closing device in a low tank for storing wash water to be supplied to a toilet, and in particular, for automatic opening / closing of a water supply opening by electric power for the purpose of saving water, the automatic opening / closing device by electric power fails. In the event of an emergency, the water outlet can be opened and closed manually.
[0002]
[Prior art]
In order to save water, there has been proposed a device that automatically opens and closes a water tank outlet for supplying wash water to a toilet in a flush toilet by electric power. If such a device is attached to a low tank, it is possible to automatically open the water inlet when it is detected that a person has entered the toilet and that a person has left the toilet. Therefore, it is not possible to send water manually by hand, which helps to save water. In addition, for example, the time measurement is started by detecting that a person has entered the toilet, and it is determined whether it is a urine or a stool depending on the time it takes for the person to leave the toilet after using it. Depending on the situation, the length of time to open the water outlet can be adjusted and water can be sent in an amount appropriate to the situation, which also helps save water.
[0003]
[Problems to be solved by the invention]
However, in the case of opening and closing the water supply port only by electric power, the wash water cannot be supplied in the event of an emergency such as a power failure or a failure of the electric water supply port opening / closing device. The problem that occurs.
In order to prevent such a problem, it is conceivable to install a water supply opening / closing device manually operated together with an electric water supply opening / closing device. However, simply installing a water supply opening and closing device by manual operation may cause frequent water supply by manual operation, and the purpose of saving water will not be achieved.
[0004]
The present invention has been made in order to solve the above-described problems of the prior art, and can open and close the water tank opening of the low tank by electric power. When it becomes impossible, it is possible to open and close the water inlet by manual operation, and in the case of manual operation, the water inlet can be opened by adding movement so that water can not be supplied without darkness. An object of the present invention is to provide a water tank opening and closing device for a low tank.
[0005]
The present invention also provides a water tank opening and closing device for a low tank that allows the manual operation part for opening and closing the water supply opening to be inconspicuous, so that water cannot be supplied without darkness by manual operation. The purpose is to provide.
[0006]
The present invention also provides a water tank opening / closing device for a low tank in which a water supply opening / closing mechanism by manual operation is arranged in parallel so that an extra load is not applied to a motor that is a driving source of the water opening / closing mechanism by electric power. For the purpose.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a water tank opening and closing device for a low tank according to the present invention will be described with reference to the drawings.
1 to 3, reference numeral 10 indicates a part of a low tank to which the device of the present invention is attached. A hole for extending the rotating shaft 14 for opening and closing the water supply opening from the outside toward the inside of the low tank 10 is provided in one side portion of the low tank 10. In this hole, the tube shaft portion 28 of the case 12 is inserted into one side outer surface of the row tank 10, and the fixing nut 13 is screwed into the tube shaft portion 28 from the inside of the row tank 10, whereby the case 12 is attached to the row tank 10. It is fixed. The rotating shaft 14 is inserted into the tube shaft portion 28.
[0008]
As shown in FIG. 3, a pulley 84 is fitted to the tip of the rotating shaft 14 and is fixed to the rotating shaft 14 with a set screw 81, and one end side of a chain 86 is wound around the pulley 84. The other end of the chain 86 is connected to a valve body that opens and closes a water supply port (not shown) of the low tank 10. The valve body is, for example, a sphere, and when the chain 86 is wound around the pulley 84 by the rotation of the rotating shaft 14, the valve body opens the water supply port, and the water stored in the low tank 10 is supplied to the toilet bowl. The toilet bowl is to be washed. When the rotating shaft 14 is reversed, the pulley 84, the chain 86, and the valve body are returned to the original positions, the water supply port is closed, and the water supply is stopped. The pulley 84 can be fixed at an arbitrary position of the rotary shaft 14 by a set screw 81, and the length of the rotary shaft 14 is made long so as to be compatible with the low tank 10 of all specifications. . When the rotary shaft 14 is installed in the row tank 10, an extra length portion can be cut according to the specifications of the row tank 10.
The rotary shaft 14 may be of a so-called arm type in which a tip end portion is bent in an L shape and one end portion of a chain 86 is connected to the L shape tip portion.
[0009]
As shown in FIG. 8, a circumferential groove 22 is formed in the rotary shaft 14 at a portion covered with the tube shaft portion 28, and an O-ring 24 is fitted into the week groove 22. Waterproofing between the tube shaft portion 28 is achieved. The rotating shaft 14 has a flange portion 16 on the base side, that is, the case 12 side, a columnar shaft portion 18 following the flange portion 16, and further, as shown in FIGS. A pair of jettys 19, 19 formed on the side, a radial guide groove 21 sandwiched between the jettys 19, 19, and a cylindrical guide shaft 20 that is integrally formed by projecting in the guide groove 21 in the axial direction. And have. The flange portion 16 is raised against the inner bottom portion of the case 12 and hits a jetty 17 integrally formed in a circular shape, and the position of one side in the axial direction of the rotary shaft 14 is restricted.
[0010]
Rotating bodies 30 are fitted on the outer peripheral side of the shaft portion 18 of the rotating shaft 14 so as to be rotatable relative to each other. As shown in FIGS. 6 and 7, the rotating body 30 includes a worm gear 32 formed in a bowl-shaped portion on one end side in the axial direction, a step portion 34 that forms a surface orthogonal to the central axis, and the other end in the axial direction. A partially arc-shaped jetty 35, 36 integrally formed on the side, a notch 38 formed in the jetty 35, 36, and a part of the jetty 35 are retreated in a radial direction at a position facing the notch 38. And a cam surface 42 formed by projecting a part of the outer peripheral surface outward at the intermediate portion in the axial direction. One end surface of the rotating body 30 abuts against the flange portion 16 of the rotating shaft 14, and the position of the rotating body 30 on one side in the axial direction is restricted.
[0011]
The surface of the jetty 35 is higher than the surface of the other jetty 36. Since the concave portion 40 is formed by retreating a part of the jetty 35 in the radial direction, the upper surface of the wall defining the concave portion 40 is also higher than the surface of the jetty 36. The circumferential end surface of the wall that defines the recess 40 serves as a stopper 41 that regulates the rotational position of the manual operation member 50 described later by manual operation. Further, the end surface of the jetty 35 on the side of the notch 38 also functions as a stopper that prevents the manual operation member 50 from reversing.
[0012]
A motor 64 as a drive source is attached in the case 12, and a worm 60 attached to the output shaft 62 of the motor 64 meshes with the worm gear 32 of the rotating body 30. Therefore, the rotational force of the motor 64 is decelerated by the worm 60 and the worm gear 32 and transmitted to the rotating body 30, and the rotating body 30 rotates forward and backward by forward and reverse rotation of the motor 64.
[0013]
A manual operation member 50 is fitted in the guide groove 21 formed on the end face of the rotation shaft 14 so as to be movable along the guide groove 21. The manual operation member 50 is also fitted in the notch 38 formed on the end surface of the base end of the rotating body 30 and is formed at a position facing the notch 38 of the rotating body 30. It is comprised so that it can fit in the recessed part 40 which is. As shown in FIGS. 10 and 11, the manual operation member 50 includes a main body portion whose appearance is close to a rectangular parallelepiped, a cylindrical knob 52 projecting from one end portion of the main body portion in a right angle direction, and a main body portion. A long hole 54 formed in the longitudinal direction and a cutout portion 56 formed in a rectangular shape on the sliding contact side of the main body portion with the rotating shaft 14 and the rotating body 30 are provided.
[0014]
The width and height of the cutout portion 56 of the manual operation member 50 are larger than the width and height of the jetty 36 of the rotating body 30, and the cutout portion 56 faces one end surface in the circumferential direction of the jetty 36. If the manual operation member 50 is rotated toward the jetty 36 together with the rotary shaft 14 in this state, the manual operation member 50 can be rotated with the notch 56 straddling the jetty 36. The manual operation member 50 has a rectangular recess 57 formed by rolling the sliding contact side of the main body portion with the rotary shaft 14 and the rotary body 30.
[0015]
The long hole 54 of the manual operation member 50 is fitted into the guide shaft 20 of the rotary shaft 14, and is guided by the guide groove 21 within the space of the long hole 54 and the guide shaft 20. Guided by the notch 38 of the body 30, the manual operation member 50 can move in the radial direction of the rotating shaft 14 and the rotating body 30. A screw 74 is screwed from the recessed portion 57 side of the manual operation member 50 toward the knob 52, and a tension spring 76 as a biasing member is hung between the screw 74 and the guide shaft 20. Yes. The tension spring 76 is in the recessed portion 57 of the manual operation member 50.
[0016]
In a normal state in which the manual operation member 50 is not operated, the manual operation member 50 is retracted to a position where the rear end of the manual operation member 50 fits into the recess 40 of the rotating body 30 by the biasing force of the spring 76. In this retracted position, the manual operation member 50 is positioned so as to cross both the rotary shaft 14 and the rotary body 30 in the radial direction, the manual operation member 50 is engaged with the jetties 19 and 19 of the rotary shaft 14, and the rotary body. By engaging with the 30 jetty 36, the rotary shaft 14 and the rotary body 30 rotate together.
[0017]
On the other hand, when the knob 52 of the manual operation member 50 is pinched and the manual operation member 50 is moved in the radial direction of the rotary shaft 14 and the rotary body 30 against the urging force of the spring 76, Escapes from the recess 40 of the rotating body 30, and the notch portion 56 of the manual operation member 50 comes to a position facing the jetty 36 of the rotating body 30, so that the manual operation member 50 and the rotating body 30 are disengaged. Even if the manual operation member 50 is rotated counterclockwise in FIGS. 5 and 6 in this state, the rotational force is not transmitted to the rotating body 30, and only the rotating shaft 14 is rotated. When the manual operation member 50 is rotated in the clockwise direction in FIGS. 5 and 6 with the manual operation member 50 and the rotating body 30 disengaged, one side surface 51 of the manual operation member 50 is It hits one end surface in the circumferential direction of the jetty 35 so as to prevent reverse rotation.
[0018]
As shown in FIGS. 1 and 2, a screw 66 is screwed into the flange portion 16 of the rotary shaft 14 from the outer peripheral surface side, and a screw 68 is screwed near the outer periphery of one end surface of the rotating body 30. At 68, one end and the other end of a return spring 70 made of a coil spring are hung. The return spring 70 exists in a partial arc shape along the outer peripheral surface of the flange portion 16 of the rotating shaft 14. The return spring 70 is biased when the rotating shaft 14 rotates relative to the rotating body 30, more specifically when the rotating shaft 14 rotates counterclockwise in FIG. It works to return to rotation. On the other hand, when the rotating shaft 14 and the rotating body 30 rotate integrally, the return spring 70 also rotates integrally without being biased.
[0019]
The rotating shaft 14 and the rotating body 30 rotate integrally as described above when the rotating shaft 14 is automatically rotated by the driving force of the motor 64. In this case, since the rotation range needs to be regulated, a switch 88 for detecting the original position and a switch 90 for detecting the stop position are provided in the rotational movement path of the cam surface 42 of the rotating body 30 as shown in FIG. Has been placed. The rotating body 30 is driven to rotate within a range in which the switches 88 and 90 detect the cam surface 42.
[0020]
The case 12 is covered with a cover 78. The cover 78 has a hole for projecting the portion of the jetty 36 of the rotating body 30 outward, and has a jetty that faces the stepped portion 34 of the rotating body 30 around the hole. The position on the other end side of the rotating body 30 is regulated.
[0021]
The rotating body 30 and the other end of the rotating shaft 14 projecting outward from the cover 78 and the main body of the manual operation member 50 are covered with another cover 80. The cover 80 is a cup-shaped component as shown in FIGS. 12 and 13, and the guide groove 82 that guides the movement of the manual operation member 50 together with the guide groove 21 and a part of the knob 52 of the manual operation member 50. It has a semicircular recess 84 that can be received. The cover 80 is disposed on the outer peripheral side of the other end of the rotating body 30 so as to cover the rotating body 30. In this state, the screw 72 penetrating the cover 80 is screwed into the guide shaft 20 of the rotating shaft 14. It is attached substantially integrally. When the manual operation member 50 is moved by the urging force of the urging member 76, about half of the circumferential direction of the knob 52 is fitted in the recess 84 of the cover 80, so that the presence of the knob 52 is not so noticeable.
[0022]
Next, the operation of the above embodiment will be described on the assumption that a low tank having this device is installed in a toilet. When the apparatus is in its original position and is not operating, the manual operation member 50 is moved by the urging force of the urging member 76 as described above, and the manual operation member 50 moves both the rotating shaft 14 and the rotating body 30 together. It is located across the radial direction, and is engaged between the rotating body 30 and the rotating shaft 14 so that the rotating body 30 and the rotating shaft 14 can rotate together. In this state, for example, when an appropriate sensor detects that a person has entered and exited the toilet, the motor 64 is activated, and the rotating body 30 is counteracted in FIGS. 2 and 4 due to the engagement of the worm 60 and the worm gear 32. It is rotated about 150 ° in the clockwise direction, and the cam surface 42 of the rotating body 30 is actuated by the switch 90 to stop. The pulley 84 shown in FIG. 3 is rotationally driven integrally with the rotating body 30 to wind up the chain 86, the valve body opens the water supply port of the low tank, and the washing water flows into the toilet bowl. As described above, since the rotating body 30 and the rotating shaft 14 rotate together, the return spring 70 also moves integrally and the return spring 70 is not biased. The biasing force is not applied as an extra load.
[0023]
The time during which the valve body opens the water supply port varies depending on the length of time that the person stays in the toilet. If the person stayed in the toilet is more than a certain amount, water was used for a relatively long time, and if the person stayed in the toilet was less than a certain amount, the urine was used As a relatively short time water supply. The length of the water supply time can be controlled by a timer. When water is supplied for a predetermined time, the motor 64 is activated in the reverse direction, and the rotating body 30 is driven to rotate clockwise in FIGS. When the rotating body 30 returns to the original rotational position, the switch 88 shown in FIG. 4 is operated by the cam surface 42 of the rotating body 30 to stop the motor 64 and stop the rotation of the rotating body 30. Here, the valve body closes the water tank outlet and stops the supply of flush water to the toilet.
[0024]
Next, when automatic water supply cannot be performed due to a power failure, failure of the electric drive mechanism, or other troubles, manual operation can be performed by operating the manual operation member 50 as described below. First, the knob 52 of the manual operation member 50 is pinched, and the manual operation member 50 is slid in the radial direction of the rotating body 30 and the rotation shaft 14 against the urging force of the urging member 76 and pulled out. By doing so, the rear end portion of the manual operation member 50 comes out of the concave portion 40 of the rotating body 30, and the notch portion 56 of the manual operation member 50 is positioned to face the jetty 36 of the rotating body 30. Accordingly, while maintaining this state, the manual operation member 50 is then rotated counterclockwise within a range of approximately 150 ° as shown in FIG. 5 around the central axis of the rotary shaft 14. The rotation range of about 150 ° is restricted by the side surface 53 of the manual operation member 50 shown in FIGS. 10 and 11 coming into contact with the stopper 41 of the rotating body 30 shown in FIG.
[0025]
When the manual operation member 50 is rotated, the notch 56 faces the jetty 36 of the rotating body 30, so that the engagement between the rotating shaft 14 and the rotating body 30 is disengaged. Only 14 rotates and the rotating body 30 does not rotate. If the rotating shaft 14 and the rotating body 30 are engaged even during a manual rotation operation, the engagement between the worm 60 and the worm gear 32 and the motor 64 become a resistance, and the manual operation member is practically used. It is difficult to rotate 50, and if it is forced to rotate, an excessive force is applied to the engaging portion and the meshing portion between members, causing a failure.
[0026]
In that respect, in the illustrated embodiment, since only the rotating shaft 14 is rotated by the above-described operation of the manual operation member 50, it is possible to perform the rotation operation with a weak force without applying an excessive force anywhere. it can. Further, since the rotating body 30 does not rotate and only the rotating shaft 14 rotates, the return spring 70 is biased. Further, since the notch 56 of the manual operation member 50 straddles the jetty 36 of the rotating body 30, the return of the manual operation member 50 to the original position by the urging force of the urging member 76 is caused by the cutting of the manual operation member 50. It is blocked by the engagement between the notch 56 and the jetty 36 of the rotating body 30.
[0027]
When the rotating shaft 14 is rotated by the rotation operation of the manual operation member 50 as described above, the water supply valve of the low tank is opened and the washing water is supplied to the toilet bowl as in the case of the rotational drive by the motor as described above. The time during which the water supply valve is opened is arbitrarily determined by a person who manually operates the manual operation member 50. When the operation of the manual operation member 50 is stopped, the manual operation member 50 and the rotary shaft 14 are rotated and returned toward the original rotation position by the urging force of the return spring 70. Further, since the notch 56 of the manual operation member 50 and the jetty 36 of the rotating body 30 are disengaged by returning to the original position, the manual operation member 50 is moved in the radial direction by the urging force of the urging member 76. Slide to return to the original position where the rotating shaft 14 and the rotating body 30 are engaged with each other.
[0028]
According to the embodiment described above, when the opening and closing operation of the low tank water supply port by electric power cannot be performed due to some trouble, the water supply port opening and closing operation can be manually performed by operating the manual operation member 50. In addition, when the manual operation member 50 is operated, it is necessary to perform an operation of once sliding it in the radial direction, and then to manually rotate the manual operation member 50 while maintaining this operation. It is possible to prevent water supply by operation from being performed without darkness. Further, the manual operation member 50 usually slides in the radial direction of the rotary shaft 14 and the rotary body 30 and retracts, so that the manual operation member 50 can be made inconspicuous. It is possible to prevent being performed in the dark.
[0029]
When water is supplied by manual operation of the manual operation member 50, the manual operation member 50 is slid in the radial direction of the rotary shaft 14 and the rotary body 30 to disengage the rotary body 30, so that only the rotary shaft 14 rotates. However, the power transmission system from the rotating body 30 to the motor 64 does not provide resistance to rotation, and can be manually operated with a relatively small amount of force.
[0030]
Since the return spring 70 for rotating and returning the manually operated member 50 that has been rotated manually is hung between the rotating shaft 14 that rotates together with the manually operated member 50 and the rotating body 30, it is biased only during manual operation. Since it is not energized at the time of driving by electric power, the energizing force of the return spring 70 is not applied as an extra load when driven by electric power.
[0031]
In the embodiment described above, the guide shaft 20 that guides the slide of the manual operation member 50 is formed integrally with the rotary shaft 14. However, the guide shaft having the same function as the guide shaft 20 is formed integrally with the cover 80. May be. 12 and 13 shows a chain line 20A, and a columnar guide shaft 20A extends integrally in the axial direction from the center of the ceiling portion of the substantially cup-shaped cover 80. With the body portion of the manual operation member 50 and the end of the rotating body 30 covered with the cover 80, the guide shaft 20A passes through the long hole 54 of the manual operation member 50, and one end of the biasing member 76 extends to the guide shaft 20A. It is hung. In this state, the screw 80 is passed through the center hole of the guide shaft 20 </ b> A from the outside of the cover 80 and the screw 72 is screwed into the rotary shaft 14, so that the cover 80 is attached to the rotary shaft 14 substantially integrally. As shown in FIG. 13, a part of the outer periphery of the guide shaft 20A is cut in parallel to the sliding direction of the manual operation member 50, and the long hole 54 of the manual operation member 50 is fitted along this parallel plane. The slide of the manual operation member 50 is guided.
In addition, the design can be changed without departing from the technical idea described in each claim.
[0032]
【The invention's effect】
According to the invention of claim 1 Symbol placement, when it is not possible to perform opening and closing operations of the water supply port of the low tank by the electric power for some trouble, by performing opening and closing operations of manually water port by operating the manual operating member When the manual operation member is operated, the operation member is temporarily disengaged from the rotating body, and then the manual operation member is operated to release the rotational force while the engagement is released. Since it is necessary to transmit to the rotating shaft, it is possible to prevent water supply by manual operation from being performed without darkness.
Further, since the manual operation member is retracted in the radial direction of the rotating shaft and the rotating body by the urging force, the presence of the manual operation member is inconspicuous, and also from this point, water supply by manual operation is prevented from being performed without darkness. Can do.
[0034]
According to the second aspect of the present invention, since the return spring for returning the manually operated manual operation member is hung between the rotary shaft and the rotary body, the rotary body is rotationally driven by the motor. when there is no take extra by biasing force of the return spring is a load of the motor, it is possible to use a small motor at low output.
[Brief description of the drawings]
FIG. 1 is a cross-sectional front view of an essential part showing an embodiment of a water tank opening and closing device for a low tank according to the present invention.
FIG. 2 is a partial cross-sectional plan view of the embodiment.
FIG. 3 is a sectional front view showing the entirety of the embodiment.
FIG. 4 is a plan view showing a power transmission system using an electric force in the embodiment.
FIG. 5 is a plan view showing a manual operation unit of the embodiment.
FIG. 6 is a plan view showing a rotating body in the embodiment.
FIG. 7 is a longitudinal sectional view of the same rotating body.
FIG. 8 is a front view showing the rotating shaft in the embodiment with a part thereof omitted.
FIG. 9 is a plan view of the rotary shaft.
FIG. 10 is a plan view showing a manual operation member in the embodiment.
FIG. 11 is a front view of the manual operation member.
FIG. 12 is a front view showing a cover in the embodiment.
FIG. 13 is a plan view of the cover.
[Explanation of symbols]
14 Rotating shaft 30 Rotating body 50 Manual operating member 64 Motor 70 Return spring 76 Energizing member

Claims (2)

A rotating shaft that opens and closes the water inlet to the toilet,
A rotating body to transmit the driving force of the motor to the rotating shaft;
A manual operation member capable of transmitting a rotational force to the rotary shaft by manual operation and capable of engaging / disengaging between the rotary shaft and the rotating body ;
A biasing member that biases the manual operation member so that the manual operation member engages between the rotating shaft and the rotating body;
The rotating body is fitted on the outer periphery of the rotating shaft so as to be relatively rotatable,
The manual operation member is configured to be engaged and disengaged between the rotary shaft and the rotary body by moving in the radial direction on one end side of the rotary shaft and the rotary body, and the radius is generated by the biasing force of the biasing member. By retreating in the direction, the rotary shaft and the rotary body are engaged with each other, and by moving in the radial direction against the biasing force by the biasing member, the engagement with the rotary body is released and the manual operation is performed. It is configured to rotate only on the rotation axis,
A water tank opening and closing device for a low tank, comprising a return spring for returning the rotating shaft rotated by manual operation to its original position . The return spring is hung between the rotating shaft and the rotating body, and when the rotating body is rotationally driven by the motor, the urging force of the return spring does not become a load on the motor. Water tank opening and closing device for low tank.

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