JP2014018362A - Dishwasher rotating brush by faucet water pressure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher which drives a dishwashing brush at the inlet of a faucet by effectively using high hydrostatic pressure in a water pipe.SOLUTION: A rotary piston, which is provided with a cylindrical part and a plate-shaped part projecting from the outer surface of the cylindrical part in the radial direction, is mounted inside a housing so as to be rotatable around a central axis of the cylindrical part. A ring-shaped cylinder chamber formed between the housing and the cylindrical part is partitioned by the plate-shaped part to form a rotary piston. A switching valve whose both sides communicate with a water supply port and a water discharge port alternately is switched by the movement of the rotation end of the rotary piston. A handle of a brush is detachably inserted and attached to the cylindrical part of the rotary piston.

Description

  The present invention relates to a dishwasher attached to a faucet and rotating a brush by water pressure.

  As a dishwasher for washing dishes using the power of water flowing out of a faucet, a main body that is attached to the faucet and allows water flowing out of the faucet to pass through, and water that flows into the main body and flows out of the faucet A dishwasher comprising: a rotating body that rotates by hydraulic power; and a brush-shaped cleaning body that has one end attached to the rotating body and rotates together with the rotating body to wash dishes. It is proposed in Document 1. In the above-mentioned patent document 1, the rotating body is described as “rotary blade” in the description of the embodiment, and in the drawing showing the embodiment, the rotating body is arranged at the upper end portion of the rotating shaft arranged vertically. The mounted side profile is shown as a rectangular object, and is placed in a vertical cylindrical container called a main body, receives a water flow flowing into the container from a port opening at the top of the container, The passed water is discharged out of the container through a drain opening opened at the lower end of the side wall of the container. Although there is no further explanation about the “rotary blade” in this document, it is inferred from the above description that the rotating body in the dishwasher proposed in this document is a water flow turbine. .

JP 05-115421 A

  The water flow turbine drives the turbine impeller by the dynamic pressure of the water flow, and can generate an appropriate rotational force according to the flow rate and flow velocity of the water flow. However, the flow rate and flow rate of water flowing out of the tap are not so large when washing dishes, and even if the water turbine is operated by the dynamic pressure of the water flow after being squeezed by the faucet, the rotating brush for washing dishes should be attached to the dishes. It seems impossible to obtain sufficient rotational force to overcome the frictional resistance caused by contact with the motor. In a water flow turbine, if the rotational resistance on the turbine increases, the turbine stops and the water flow experiences some resistance to passage between the blades of the stopped turbine, but still flows easily between the turbine blades. Almost no driving force due to the hydrostatic pressure of water acts on the wing. However, the hydrostatic pressure in the water pipe at the inlet of the faucet valve is generally 0.5 to 1 MPa (about 5 to 10 atm), and this hydrostatic pressure flows out from the faucet according to the opening of the faucet valve. No matter how much the flow rate of the water flow is reduced, if the flow is blocked, it will be restored as static pressure, so if the positive displacement hydraulic actuator is operated by the water flow flowing out from the tap, the amount of water flowing from the tap Regardless of the case, it is considered that a driving force sufficient to drive the brush for washing dishes can be obtained.

  In view of the above circumstances, an object of the present invention is to provide a dishwasher for driving a dishwashing brush by effectively using a high hydrostatic pressure existing in a water pipe at an inlet of a faucet valve. Yes.

As a solution to the above problems, the present invention provides:
A rotating piston comprising a cylindrical part and a plate-like part protruding radially from the outer surface of the cylindrical part;
A bearing portion that supports the rotating piston so as to be rotatable around a central axis of the cylindrical portion, and the rotating piston is supported by the bearing portion and rotates around the central axis. An annular wall portion that presents an annular inner wall surface that slidably contacts an edge of the plate-like portion, and a housing,
The rotating piston and the housing include an annular cylinder between the rotating piston and the housing when the rotating piston is supported by the bearing portion of the housing so as to be rotatable around the central axis. A cylinder chamber space on one side of the plate-like part and the other side of the plate-like part. It is designed to partition into the cylinder chamber space in
The housing further includes a water supply structure portion including a hole into which a faucet is inserted, and a water supply port for guiding water received from the faucet inserted into the hole toward a part of the annular cylinder chamber, A drainage structure having a drainage port for discharging water from the other part of the annular cylinder chamber, and a switching valve for switching a flow path of water from the water supply port to the drainage port through the annular cylinder chamber The switching valve connects the water supply port to a portion of the annular cylinder chamber that extends to one side from the switching valve and shuts off the drain port from the portion that extends to the other side of the switching valve. A first switching position and a water supply port which are connected to a portion extending from the switching valve to the other side of the annular cylinder chamber and cut off from a portion extending from the switching valve to the one side are provided in the annular shape. Cylinder chamber The drain valve is connected to a portion extending to the other side of the switching valve and shut off from a portion extending to the one side of the switching valve, and at the same time the drain port is connected to the one of the switching valve of the annular cylinder chamber. A second switching position connected to a portion extending to the side and shutting off from the portion extending to the other side from the switching valve;
The rotating piston drives the switching valve to the first switching position when the plate-like portion reaches a turning end position in one direction along the annular cylinder chamber. Comprising a switching valve driving means for driving the switching valve to the second switching position when reaching the end position of rotation in the other direction along the annular cylinder chamber;
A tableware, wherein a brush is detachably inserted at one end of the cylindrical portion of the rotating piston so as to close a space in the cylindrical portion and rotate together with the rotating piston. A cleaning device is proposed.

  One plate-like portion of the rotating piston is provided, and correspondingly, the water supply port, the drainage port, and the switching valve may be provided, respectively. A plurality of shaped portions are provided at equal intervals around the central axis of the cylindrical portion. Correspondingly, the same number of the water supply port, the drainage port, and the switching valve are equally spaced. May be provided separated by.

  The drainage structure portion of the housing further includes an annular water channel that extends annularly along the annular cylinder chamber following the drainage port, and a plurality of fountains that are spaced along the annular water channel and eject water from the annular water channel A hole may be provided, and a fountain hole opening degree adjusting means for adjusting the opening degree of the fountain hole between fully open and fully closed may be provided.

The dishwasher
A rotating piston comprising a cylindrical part and a plate-like part protruding radially from the outer surface of the cylindrical part;
A bearing portion that supports the rotating piston so as to be rotatable around a central axis of the cylindrical portion, and the rotating piston is supported by the bearing portion and rotates around the central axis. An annular wall portion that presents an annular inner wall surface that slidably contacts an edge of the plate-like portion, and a housing,
The rotating piston and the housing include an annular cylinder between the rotating piston and the housing when the rotating piston is supported by the bearing portion of the housing so as to be rotatable around the central axis. A cylinder chamber space on one side of the plate-like part and the other side of the plate-like part. It is designed to partition into the cylinder chamber space in
The housing further includes a water supply structure portion including a hole into which a faucet is inserted, and a water supply port for guiding water received from the faucet inserted into the hole toward a part of the annular cylinder chamber, A drainage structure having a drainage port for discharging water from the other part of the annular cylinder chamber, and a switching valve for switching a flow path of water from the water supply port to the drainage port through the annular cylinder chamber The switching valve connects the water supply port to a portion of the annular cylinder chamber that extends to one side from the switching valve and shuts off the drain port from the portion that extends to the other side of the switching valve. A first switching position and a water supply port which are connected to a portion extending from the switching valve to the other side of the annular cylinder chamber and cut off from a portion extending from the switching valve to the one side are provided in the annular shape. Cylinder chamber The drain valve is connected to a portion extending to the other side of the switching valve and shut off from a portion extending to the one side of the switching valve, and at the same time the drain port is connected to the one of the switching valve of the annular cylinder chamber. A second switching position connected to a portion extending to the side and shutting off from the portion extending to the other side from the switching valve;
The rotating piston drives the switching valve to the first switching position when the plate-like portion reaches a turning end position in one direction along the annular cylinder chamber. Comprising a switching valve driving means for driving the switching valve to the second switching position when reaching the end position of rotation in the other direction along the annular cylinder chamber;
If the brush is removably inserted into the cylindrical portion of the rotating piston at one end to close the space in the cylindrical portion and rotate together with the rotating piston, the rotating piston Is driven to reciprocate in the annular cylinder chamber by hydrostatic pressure of water introduced into the cylinder chamber space on one side or the other side of the plate-like portion via the switching valve from the water supply port. The brush mounted on the rotating piston is driven with a driving torque that can be increased up to a maximum driving torque corresponding to the hydrostatic pressure of water at the faucet valve inlet regardless of the opening degree of the faucet valve. In this case, if the opening of the faucet valve is increased, the driving speed increases within the range of the driving torque until the maximum driving torque is reached. The water after driving the rotating piston in the annular cylinder chamber is discharged from the drain port to the outside of the housing, so that the discharged water can be discharged toward or near the dishwashing surface of the brush. For example, the tableware can be pressed against the rotating piston that reciprocally rotates while being poured with water, and it can be washed with a brush.

  On the other hand, if the brush is not used and water from the faucet normally flows out, the cylindrical part is opened as it is without inserting the brush into the cylindrical part of the rotating piston. Water flows from the water supply port into the cylindrical portion and flows out directly through the cylindrical portion.

  If the one plate-like portion of the rotating piston is provided, and the water supply port, the drainage port, and the switching valve are respectively provided correspondingly, the rotating piston is the plate-like. The housing is driven to reciprocate at a rotation angle close to 360 degrees while moving the portion along the annular cylinder chamber. Two plate-like portions of the rotating piston are provided with an equidistant angle around the central axis of the cylindrical portion, and the water supply port, the drainage port, and the switching are correspondingly provided. If two valves are provided at an equal angle, the rotary piston moves the plate-like portion along the annular cylinder chamber and is close to 180 degrees in the housing. It is driven to reciprocate at a rotation angle. The plate-like portion of the rotating piston is provided with three equidistant angles around the central axis of the cylindrical portion, and the water supply port, the drainage port, and the switching are correspondingly provided. If three valves are provided at an equiangular angle, the rotary piston moves the plate-like portion along the annular cylinder chamber and is close to 120 degrees in the housing. It is driven to reciprocate at a rotation angle. However, in any case, the switching valve is provided in a part of the annular cylinder chamber, and the switching valve driving means is provided in the plate-like portion of the rotating piston. Is less than 360, 180, and 120 degrees.

  The drainage structure portion further includes an annular water channel that extends annularly along the annular cylinder chamber following the drainage port, and a plurality of fountain holes that are spaced along the annular water channel and eject water from the annular water channel. If this is the case, the water after driving the rotating piston in the annular cylinder chamber is discharged so as to wrap the brush from the annular region surrounding the brush, thereby enhancing the dish washing effect by the brush. it can. In this case, if the drainage structure part further includes fountain hole opening degree adjusting means for adjusting the opening degree of the fountain hole between fully open and fully closed, the opening degree of the fountain hole is changed to change the opening degree of the fountain hole. The flow velocity of the water flow ejected from the fountain hole can be changed. Also, when the brush is not attached to the rotating piston and the water from the faucet flows out directly through the cylindrical portion of the rotating piston, the fountain hole is fully closed by the fountain hole opening degree adjusting means. If so, it can be ensured that all of the water from the faucet flows out directly from the cylindrical portion.

It is a longitudinal cross-sectional view which shows one Example of the dishwasher by this invention in the state in which the housing and the rotation piston were assembled. It is a longitudinal cross-sectional view which removes a rotation piston from the housing and rotation piston assembly shown in FIG. 1, and shows only a housing. In the case where there are two plate portions of the rotating piston in the housing and rotating piston assembly shown in FIG. 1, the longitudinal section of the housing shown in a vertical cross section perpendicular to the vertical cross section shown in FIG. FIG. The cross section taken along section IV-IV in FIG. 1 in the case where there are two plate portions of the rotating piston in the housing and rotating piston assembly shown in FIG. It is a top view by the partial cross section shown as FIG. A and FIG. B about the state in a movement termination position. FIG. 2 is a side view and a plan view showing a side view and a plan view of a rotating piston when there are two plate portions of the rotating piston in the housing and rotating piston assembly shown in FIG. 1. The fountain hole opening degree adjusting means for adjusting the degree of opening of the plurality of fountain holes in the drainage structure portion between the fully open and fully closed state is removed from the housing in the housing and rotating piston assembly shown in FIG. It is a bottom view of the housing drainage structure part which shows the arrangement state of a plurality of fountain holes. A bottom view of the housing drainage structure in the housing and rotating piston assembly shown in FIG. 1 in a state in which the opening degree of the plurality of fountain holes is fully opened and in a state of being fully closed is shown in FIG. It is a figure shown as FIG. It is a side view by the partial cross section which shows the state by which the brush for glass washing | cleaning was attached to the assembly of the housing and rotation piston shown in FIG. It is a side view by the partial cross section which shows the state by which the brush for dish washing | cleaning was attached to the assembly of the housing and rotation piston shown in FIG. FIG. 4 is a plan view with a partial cross-sectional view similar to FIGS. 4A and 4B, showing the state in which the rotary piston is in two different rotary end positions when there is only one plate-like portion of the rotary piston. It is a figure shown as FIG. A and FIG. In the case where there are three plate-like portions of the rotating piston, the state in which the rotating piston is in two different rotation end positions is shown in a plan view with a partial cross section similar to FIGS. It is a figure shown as FIG. A and FIG.

  As described above, FIG. 1 is a longitudinal sectional view showing an embodiment of a dishwasher according to the present invention in a state where a housing and a rotating piston are assembled, and FIG. It is a longitudinal cross-sectional view which removes a rotation piston from the assembly of a moving piston, and shows only about a housing. As an assembly of the housing and the rotating piston whose longitudinal section passing through the central axis of the rotating piston appears in these drawings, the plate member of the rotating piston may be one, two or three, In the embodiment shown in FIGS. 1 to 9, it is assumed that there are two plate members of the rotating piston, and as a modification example of a part thereof, there is a structure in which there are one and three plate members of the rotating piston. Is shown in FIGS. 10 and 11 corresponding to FIG.

  In these drawings, reference numeral 10 denotes a rotating piston, which includes a cylindrical portion 12 and two plate-like portions 14a and 14b protruding in the radial direction from the outer surface of the cylindrical portion. The two plate-like portions 14 a and 14 b are arranged symmetrically around the central axis CC of the cylindrical portion 12. Reference numeral 16 denotes a housing, bearing portions 18a and 18b for supporting the rotating piston 10 so as to be rotatable around the central axis CC of the cylindrical portion 12, and the rotating piston being supported by the bearing portions 18a and 18b. An annular wall portion 22 is provided that presents an annular inner wall surface that slides against the edges 20a, 20b of the plate-like portions 14a, 14b of the rotating piston when rotating around the axis C-C. In the illustrated embodiment, the plate-like portions 14a and 14b are plates having a rectangular outline, and the edges 20a and 20b are a side edge, an upper edge and a lower edge of the rectangular plate, respectively. Correspondingly, the annular wall portion 22 is a cylindrical outer peripheral wall portion and an annular plate-shaped upper wall portion and bottom wall portion that are continuous with the upper and lower ends thereof.

  When the rotating piston 10 is supported by the bearing portions 18a and 18b of the housing so as to be rotatable around the central axis CC, the rotating piston 10 and the housing 16 have an annular cylinder chamber 24 between them. Each of the plate-like portions 14a and 14b of the rotating piston is formed so as to cross the annular cylinder chamber 24, and to form the annular Linder chamber on one side of each plate-like portion and on the other side of the cylinder chamber space. It is designed to partition into space. Each of the plate-like portions 14 a and 14 b constitutes a piston that slides along the annular cylinder chamber 24.

  The housing 16 further includes a water supply structure 30 including a hole 26 into which a faucet is inserted, and water supply ports 28a and 28b for guiding water received from the faucet inserted into the hole toward the annular cylinder chamber 24. A drainage structure 34 having drainage ports 32a and 32b for draining water from the annular cylinder chamber 24, and a switching valve for switching a water flow path from the water supply ports 28a and 28b to the drainage ports 32a and 32b via the annular cylinder chamber 24 36a, 36b. The hole 26 into which the water faucet is inserted is bordered by an annular packing 38 made of rubber, and the housing 16 is attached to the water faucet in the manner that the water faucet is inserted into the hole 26, and the screw 40 It is designed to be fixed to the faucet by tightening. The switching valves 36a and 36b are flap valves made of plate-like members that rotate around the support shafts 37a and 37b, respectively, and are tilt positions shown by broken lines in FIG. 1 and solid lines in FIG. And tilt between the tilt positions indicated by phantom lines in FIGS.

  The switching valve 36a connects the water supply port 28a to the portion 42a extending from the switching valve to one side of the annular cylinder chamber 24 and shuts off the portion 42b extending from the switching valve to the other side, and at the same time drains the port 32a. Is connected to a portion 42b extending from the switching valve to the other side of the annular cylinder chamber 24 and cut off from a portion 42a extending from the switching valve to the one side (see FIG. 1). 2 and the position shown by the solid line in FIG. 2 and the position shown in FIG. 4A in FIG. 4) and the water supply port 28a on the other side from the switching valve of the annular cylinder chamber 24. A portion extending to the one side from the switching valve of the annular cylinder chamber 24 at the same time as connecting to the portion 42b extending to the switching valve and shutting off from the portion 42a extending to the one side from the switching valve. Connected to 42a and A second switching position that shuts off from the portion 42b extending to the other side of the valve (the position indicated by the phantom line in FIGS. 1 and 2, and the position shown in FIG. B in FIG. 4) ).

  Similarly, the switching valve 36b connects the water supply port 28b to a portion 42b extending to one side of the annular cylinder chamber 24 from the switching valve (same as the other portion 42b described above for the switching valve 36a) and The drain port 32b is moved from the switching valve of the annular cylinder chamber 24 to the other side at the same time as blocking from the portion 42a extending from the switching valve to the other side (same as one portion 42a described above for the switching valve 36a). A first switching position (position shown in FIG. A in FIG. 4) connected to the extending portion 42a and shut off from the portion 42b extending to the one side from the switching valve; and a water supply port 28b The annular cylinder chamber 24 is connected to the portion 42a extending to the other side of the switching valve and cut off from the portion 42b extending to the one side of the switching valve, and at the same time the drain port 32b is connected to the annular cylinder chamber 24. Cut off A second switching position (the position shown in FIG. 4B in FIG. 4) connected to the portion 42b extending from the valve to the one side and shut off from the portion 42a extending from the switching valve to the other side. ).

  When the rotary piston 10 reaches the end of the clockwise rotation as viewed in FIG. 4, the switching valve 36a is moved to the first switching position by the switching valve drive pin 44aa protruding to one side of the plate-like portion 14a. (The position shown in FIG. A in FIG. 4), when the rotating piston 10 reaches the end of the counterclockwise rotation as viewed in FIG. 4, the switching protrudes to one side of the plate-like portion 14b. The second drive position (position shown in FIG. 4B in FIG. 4) is driven by the valve drive pin 44ba. Similarly, the switching valve 36b is configured so that the switching valve driving pin 44bb protrudes to the other side of the plate-like portion 14b when the rotating piston 10 reaches the end of the clockwise rotation as viewed in FIG. When the rotating piston 10 reaches the end of the counterclockwise rotation as viewed in FIG. 4, it is driven to the other side of the plate-like portion 14a. The second switching position (position shown in FIG. 4B in FIG. 4) is driven by the protruding switching valve drive pin 44ab.

  In the drainage structure 34 of the housing 16, an annular water channel 46 that allows the water discharged from the annular cylinder chamber 24 through the drainage ports 32 a and 32 b to spread annularly along the annular cylinder chamber 24, and a plurality of water from which the water is ejected. The fountain hole 48 is provided. The fountain hole 48 includes a hole 52 formed in an annular bottom wall portion 50 of the annular wall portion 22 of the housing, and a hole 56 formed in an annular nozzle plate 54 rotatably attached to the bottom wall portion 50. It is a water flow hole formed by communication. The holes 52 drilled in the bottom wall 50 may be evenly distributed along the ring of the bottom wall 50 as shown in FIG. The hole 56 opened in 54 is disposed so as to overlap with the hole 52 as shown in FIG. In the illustrated example, the hole 52 is a hole having a uniform cross section, and the hole 56 is a tapered hole.

  The nozzle plate 54 can be pivotally attached to the bottom wall portion 50 in an annular groove carved opposite to the outer peripheral surface of the bottom wall portion 50 and the inner peripheral surface of the flange portion of the nozzle plate 54 overlapping therewith. This may be done by incorporating a corrugated C-shaped clip 58. The opening degree of the fountain hole 48 is shown in FIG. 7A of FIG. 7 by appropriately rotating the nozzle plate 54 with respect to the bottom wall portion 50 by the rotatable attachment of the nozzle plate 54 to the bottom wall portion 50. As shown in FIG. 7B, the hole 56 of the nozzle plate 54 is aligned with the hole 52 of the bottom wall 50, and the hole 56 of the nozzle plate 54 is more completely aligned with the hole 52 of the bottom wall 50. Between the fully closed state and the desired degree of adjustment.

  As shown in FIG. 1, a female spline 60 extending in parallel with the central axis CC is formed on the inner peripheral surface of the cylindrical portion 12 of the rotating piston 10. As shown in FIG. 8, a brush 66 having a handle portion 64 formed with a male spline 62 that engages with the female spline 60 is attached to the rotating piston 10 by male and female spline engagement. It has become. The end position of the insertion of the male spline 62 into the female spline 60 is determined by the flange 68 provided on the handle portion 64 coming into contact with the lower end surface of the cylindrical portion 12 of the rotary piston 10, and this insertion position is determined. The pin 72 elastically pushed out from the inside of the portion 64 to the outside of the male spline 62 by the leaf spring 70 is held by being fitted into an annular groove 74 formed across the female spline 60. . The pin 72 is retracted into the male spline 62 by pressing the button 76 from the outside of the handle portion 64 and flexibly bending the leaf spring 70. The tip of the pin 72 is rounded, and the lower end of the female spline 60 is tapered in the diameter increasing direction. When the brush 66 is attached to the rotary piston 10, the male spline 62 of the brush 66 is replaced with the female type of the rotary piston 10. It is only necessary to insert the spline 60 into the spline 60 until the insertion stops. When the brush 66 is removed from the rotating piston 10, the brush 66 may be pulled out of the rotating piston 10 while pressing the button 76.

  As shown in FIG. 1, when the brush is not attached to the rotating piston 10 and the inside of the cylindrical portion 12 is open, the housing 16 is attached to the water faucet through the hole 26, and the water is fed from the water faucet. Is discharged, the water flows out through the inside of the cylindrical portion 12 of the rotating piston 10 as it is. At this time, a part of the water coming out of the faucet is diverted to the water supply ports 28a and 28b and may be discharged from the fountain hole 48 through the annular cylinder chamber 24. If the nozzle plate 54 is set to the position shown in FIG. 7B with respect to the bottom wall portion 50 and the fountain hole 48 is fully closed, Good. In the state where the water coming out of the water faucet flows out through the inside of the cylindrical part 12 of the rotating piston 10, the device shown acts only to extend the faucet somewhat.

  On the other hand, when the water tap is opened with the housing 16 attached to the water tap through the hole 26 and the brush attached to the rotating piston 10, the inside of the cylindrical portion 12 of the rotating piston 10 is blocked by the brush. Thus, the water flows through the water supply ports 28a, 28b to the annular cylinder chamber portions 42a and 42b. In this case, water flows to either side of the plate-like bodies 14a and 14b of the rotating piston 10 according to the switching position of the switching valves 36a and 36b.

  Now, assuming that the switching valves 36a and 36b are at the switching position shown in FIG. 4A, the water passing through the water supply port 28a is driven by the switching valve drive from the plate-like body 14a of the rotating piston 10 in the annular cylinder chamber 24. The water flowing to the side where the pin 44aa is present and passing through the water supply port 28b flows from the plate-like body 14b of the rotating piston 10 to the side where the switching valve driving pin 44bb is present. Accordingly, the hydrostatic pressure of the water tap acts on the side where the switching valve driving pin 44aa is present from the plate-like body 14a of the rotating piston 10 and the side where the switching valve driving pin 44bb is located from the plate-like body 14b of the rotating piston 10. At this time, the side where the switching valve drive pin 44ab is located from the plate-like body 14a of the rotating piston 10 in the annular cylinder chamber 24 is opened to the drainage port 32b via the switching valve 36b, and the switching valve drive from the plate-like body 14b. Since the side with the pin 44ba is opened to the drain port 32a via the switching valve 36a, both are under atmospheric pressure. Therefore, the difference between the hydrostatic pressure of water and the atmospheric pressure acts on both sides of the plate-like bodies 14a and 14b of the rotating piston 10. The hydrostatic pressure of water acting on one side of the plate-like bodies 14a and 14b increases to the hydrostatic pressure at the tap faucet inlet if the rotation of the rotating piston 10 is prevented. Thus, the rotating piston 10 is driven in the counterclockwise direction as viewed in FIG. 4 due to the difference between the hydrostatic pressure of water acting on both sides of the plate-like bodies 14a and 14b and the atmospheric pressure. When the rotation of the rotating piston 10 in the counterclockwise direction is advanced by this driving, the switching valve driving pin 44ab of the plate-like body 14a contacts and drives the switching valve 36b, and the switching valve 36b is driven as shown in FIG. Switching from the switching position shown in A to the switching position shown in FIG. B, and at the same time, the switching valve drive pin 44ba of the plate-like body 14b abuts against and drives the switching valve 36a, and the switching valve 36a is shown in FIG. The switching position shown is switched to the switching position shown in FIG.

  When the switching valves 36a and 36b are switched from the switching position shown in FIG. 4A to the switching position shown in FIG. 4B, the water passing through the water supply port 28a is a plate-like body of the rotating piston 10 in the annular cylinder chamber 24. 14b flows to the side where the switching valve drive pin 44ba is located, and the water passing through the water supply port 28b flows from the plate-like body 14a of the rotating piston 10 to the side where the switching valve drive pin 44ab is located. Accordingly, the hydrostatic pressure of the water faucet acts on the side where the switching valve driving pin 44ab is provided from the plate-like body 14a of the rotating piston 10 and the side where the switching valve driving pin 44ba is provided from the plate-like body 14b. On the other hand, the side where the switching valve driving pin 44aa is located from the plate-like body 14a of the rotating piston 10 is opened to the drain port 32a via the switching valve 36a, and the side where the switching valve driving pin 44bb is located from the plate-like body 14b is the switching valve. The drainage port 32b is opened through 36b. Therefore, the difference between the hydrostatic pressure of the water tap and the atmospheric pressure acts on both sides of the plate-like bodies 14a and 14b of the rotating piston 10 in the opposite direction, and the rotating piston 10 is seen in FIG. Turn clockwise. The rotation of the rotating piston 10 in the clockwise direction as viewed in FIG. 4 switches the switching valves 36a and 36b to the switching position shown in FIG.

  Thus, the pivot piston 10 pivots counterclockwise from the state shown in FIG. 4A to the state shown in FIG. B, and then pivots clockwise from the state shown in FIG. B to the state shown in FIG. In accordance with this, the brush 66 attached to the rotating piston 10 depends on the length of the switching valve drive pin 44aa and the like, but in the illustrated embodiment, at a rotation angle of about 110 degrees. Reciprocates.

  FIG. 9 is a view similar to FIG. 8 showing a state in which a brush 78 suitable for washing dishes is attached to the rotating piston 10 instead of the brush 66 suitable for washing glasses shown in FIG. Other configurations shown in FIG. 9 are the same as those in FIG.

  FIG. 10 shows an embodiment in which the water supply ports 28a and 28b, the switching valves 36a and 36b, and the rotary piston plate portions 14a and 14b described with reference to FIG. FIG. In this case, the rotating piston is approximately 290 in the illustrated embodiment, depending on the length of the switching valve drive pin such as 44aa between the state shown in FIG. 10A and the state shown in FIG. Reciprocates over degrees.

  FIG. 11 shows an embodiment in which the water supply ports 28a and 28b, the switching valves 36a and 36b, and the plate portions 14a and 14b of the rotating piston described above with reference to FIG. FIG. In this case, the rotating piston is approximately 50% in the illustrated embodiment, depending on the length of the switching valve driving pin such as 44aa between the state shown in FIG. 11A and the state shown in FIG. Reciprocates over degrees.

  Although the present invention has been described in detail with respect to one embodiment and some of its modifications, it will be apparent to those skilled in the art that various modifications can be made to the embodiment within the scope of the present invention. Will.

  10-rotating piston, 12-cylindrical part, 14a, 14b-plate-like part, 16-housing, 18a, 18b-bearing part, 20a, 20b-edge of plate-like part, 22-annular wall part, 24-annular cylinder Chamber, 26-faucet insertion hole, 28a, 28b-water supply port, 30-water supply structure, 32a, 32b-drainage port, 34-drainage structure, 36a, 36b-switching valve, 37a, 37b-support shaft for switching valve , 38-annular packing, 40-screw, 42a, 42b-part of annular cylinder chamber, 44aa, 44ab, 44ba, 44bb-switching valve drive pin, 46-annular channel, 48-fountain hole, 50-bottom of annular wall Wall, 52-hole, 54-nozzle plate, 56-hole, 58-C-shaped clip, 60-female spline, 62-male spline, 64-handle, 66-brush, 68-６８, 70- Leaf spring, 72-pin, 74-annular groove, 76- Button, 78-brush

Claims (4)

A rotating piston comprising a cylindrical part and a plate-like part protruding radially from the outer surface of the cylindrical part;
A bearing portion that supports the rotating piston so as to be rotatable around a central axis of the cylindrical portion, and the rotating piston is supported by the bearing portion and rotates around the central axis. An annular wall portion that presents an annular inner wall surface that slidably contacts an edge of the plate-like portion, and a housing,
The rotating piston and the housing include an annular cylinder between the rotating piston and the housing when the rotating piston is supported by the bearing portion of the housing so as to be rotatable around the central axis. A cylinder chamber space on one side of the plate-like part and the other side of the plate-like part. It is designed to partition into the cylinder chamber space in
The housing further includes a water supply structure including a hole into which a faucet is inserted, and a water supply port for guiding water received from the faucet inserted into the hole toward the annular cylinder chamber, and the annular cylinder chamber A drainage structure having a drainage port for discharging more water, and a switching valve for switching a flow path of water from the water supply port to the drainage port through the annular cylinder chamber, the switching valve being the water supply port Is connected to a portion extending to one side of the switching valve of the annular cylinder chamber and is cut off from a portion extending to the other side of the switching valve, and at the same time, the drain port is connected to the switching valve of the annular cylinder chamber. The first switching position and the water supply port connected to the portion extending to the other side and shut off from the portion extending to the one side from the switching valve are connected to the switching valve of the annular cylinder chamber. Previous The drain port is connected to the one side from the switching valve of the annular cylinder chamber at the same time as it is connected to the portion extending to the other side and is cut off from the portion extending to the one side from the switching valve. A second switching position connected to the part and shut off from the part extending from the switching valve to the other side,
The rotating piston drives the switching valve to the first switching position when the plate-like portion reaches a turning end position in one direction along the annular cylinder chamber. Comprising a switching valve driving means for driving the switching valve to the second switching position when reaching the end position of rotation in the other direction along the annular cylinder chamber;
A tableware, wherein a brush is detachably inserted at one end of the cylindrical portion of the rotating piston so as to close a space in the cylindrical portion and rotate together with the rotating piston. Washing machine.   A plurality of the plate-like portions of the rotating piston are provided with an equidistant angle around the central axis of the cylindrical portion, and the water supply port, the drainage port, and the switching are correspondingly provided. 2. The dishwasher according to claim 1, wherein the same number of valves are spaced apart at equal intervals.   The drainage structure portion further includes an annular water channel extending annularly along the annular cylinder chamber following the drainage port, and a plurality of fountain holes that are spaced along the annular water channel and eject water from the annular water channel. The dishwasher according to claim 1 or 2, wherein the dishwasher is provided.   4. The dishwashing apparatus according to claim 3, wherein the drainage structure portion of the housing further includes fountain hole opening degree adjusting means for adjusting an opening degree of the fountain hole between fully open and fully closed. vessel.

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