JPH03186718A - Electronic fixed quantitative stop cock - Google Patents

Abstract

PURPOSE:To prevent the undesirable influence to be caused by water scale by containing a turbine, a magnet, a cam, etc., in a cartridge to be attachable and detachable integrally to and from the body. CONSTITUTION:When feed water is started, a turbine is driven to rotate with water, and a magnetic sensor 51 detects a rotating magnetic field of a magnet 24 and converts it to an electric signal. This electric signal is counted by an electronic control part, and when it reaches a set flow rate, a motor is energized from the electronic control part, and the motor rotates and releases a lock of a locking mechanism 40, therefore, a cam 20 and a handle 5 rotate by force of a spring 26a, and a water stop valve part 11 comes to an open valve state. Also, the turbine 22, the magnet 24, the magnetic sensor 51, the cam 20, the spring 26a, the mechanism 40 and the motor are contained in a cartridge, and can be attached and detached integrally to and from the body 1. Moreover, since only the turbine 22 and the cam 20 are exposed in a passage of the cartridge 3, the undesirable influence caused by water scale, etc., can be minimized.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electronic metering stop valve.

[Prior art]

A water stop valve provided in the flow path, an impeller rotationally driven by water passing through the flow path, a gear that decelerates the rotation of the impeller and transmits it to the cam, and a water stop valve provided in the flow path. There is a well-known metering stop valve that is equipped with a control rod that opens and closes the water valve part and automatically stops the water supply when a set amount of water flows (for example,
8-19176).

The reduction ratio of the gear that reduces the rotation of the impeller is approximately 1/100,000, and for this purpose, a large number of gears are used in fixed-rate water stop valves, and in consideration of productivity, resin molded products are used. ing.

[Problem to be solved by the invention]

In the above conventional technology, the reduction gear, which is a resin molded product, absorbs water and swells, or expands or contracts due to differences in the temperature of water or hot water, and the gap between gear meshing disappears, making it impossible to rotate and measuring There was a problem that the water stop function was lost and malfunction occurred.

In addition, if the water that has passed through the water stop valve adheres to the gear and the water droplets on the gear dry after the valve closes, not only will the dirt in the water turn into dirt and stick to the gear, but also dirt and other particles will bite. There was also the problem that normal rotation was inhibited.

In addition, since the impeller drives the cam, control rod, and water stop valve part through gears, a load is placed on the impeller, resulting in poor metering accuracy, poor reproducibility of water supply amount, and poor durability. There was a problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a metering stop valve that is durable and has good metering accuracy.

[Means for Solving the Problems] In order to achieve the above object, the electronic metering stop valve of the present invention has a water stop valve section (1) provided in the flow path in the main body.
1) and a turbine (
22) and the magnet l- attached to the turbine (22).
(24), a magnetic sensor (51) that detects the rotation of the magnet (24) and converts it into an electrical signal, and the water stop valve section (
11), and a spring (26) that urges the cam (20) in the direction in which the water stop valve (11) closes.
a), a handle (5) that operates the cam (20) in the direction in which the water stop valve opens, and a lock mechanism (40) that locks the rotation of the handle (5) when the water stop valve (11) is open. ) and a motor (4) that unlocks the locking mechanism (40).
5), and an electronic control unit (58) that counts the electric signal of the magnetic sensor (51) and energizes the motor (45) when the set flow rate is reached, and the turbine (22) and the magnet (24) are connected to each other. , a cartridge (3) containing a magnetic sensor (51), a cam (20), a spring (26a), a locking mechanism (40), and a motor (45) is attached to the main body (1).
The cartridge (3) was provided with flow passages (25, 25') through which only the turbine (22) and the cam (20) were exposed.

[Effect]

When the handle (5) is operated and the cam (20) is operated against the spring (26a) in the direction in which the water stop valve part (11) opens, the water stop valve part (11) is opened and the water flow is stopped. Water flows through the road and water supply begins. At the same time, the locking mechanism locks the rotation (return) of the handle. When the water supply starts, the turbine is rotationally driven by the water, and the magnetic sensor (51) detects the rotating magnetic field of the magnet (24) rotating together with the turbine and converts it into an electric signal. This electrical signal is counted by the electronic control unit, and when the set flow rate is reached, the electronic control unit energizes the motor (45), which rotates and unlocks the locking mechanism (40). 20)
The handle (5) and the handle (5) are rotated by the force of the spring (26a) to close the water stop valve (11). Turbine (
22), magnet (24), magnetic sensor (51)
L cam (20), spring (26a), .

The locking mechanism (40) and the motor (45) are housed in the cartridge (3) and can be integrally attached to and removed from the main body (1), and a turbine (22) is provided in the flow path of the cartridge (3).
Since only the cam and the cam (20) are exposed, the adverse effects of water scale and the like can be minimized.

〔Example〕

The embodiment shown in the drawings is one in which the electronic metering stop valve of the present invention is incorporated into a mixing faucet for mixing water and hot water.
2 is the main body, 2 is the mouth, and 3 is the cartridge, which is attached to the main body with four screws 4. 5 is the handle,
On its surface there is a ``stop'' indicating the valve closed position and a ``stop'' indicating the valve open position.
The words "metered water supply" are printed on it. Reference numeral 6 indicates an indicator provided on the front surface of the main body l. In the state shown in the figure, the "stop" of the handle is at the indicator 6 position, and the valve is in the closed state. 7 and 8 are pipe levers for hot water and water sides, respectively, and 9 and 10 are piping for hot water and water sides, respectively.

In FIG. 1, 11 is a water stop valve section, and the flow path 1 in the main body 1
It is provided in 2. 12a is an inlet through which water mixed with hot water enters the channel 12. The water stop valve part 11 includes a shaft 13 and a valve 1 mounted on the upper part of the shaft 13.
4 and a spring 15 that biases the valve 14 downward, and the spring 15 is installed between the valve 14 and a cap 16' screwed onto the main body 1. 17
is an O-ring fitted into the cap 16''.

As shown in FIG. 9, the valve 14 includes an upper valve 14a that is press-fitted onto the upper end of the shaft 13, an O-ring 14b that fits into a groove of the upper valve 14a, and a lower valve 14c that is loosely fitted onto the shaft 13. , a ring 14d that fits into the groove of the lower valve 14c,
The lower valve 14c is slidable between the upper valve L3a of the shaft 13 and the upper valve 14a. In the state shown in FIG. 9, the shirt 13 is at the lower limit position, and the valve 14 is compressed by the spring 15 and water pressure against the valve seat 1a of the main body 1, and is in the closed state. As will be described later, when the shaft 13 is pushed up by the cam, the collar 13a moves toward the lower valve 14.
c and pushes up the valve 14 against the spring 15 and water pressure to open the water stop valve part 11.

Referring again to FIG. 1, reference numeral 16 denotes a body, which together with a case 17 and a cover 18 constitute the cartridge 3. As shown in FIG. These parts that make up the cartridge are molded with a durable resin such as polyacetal resin or ABS resin. The body 16 is fixed to the case 17 with two screws 19 (FIGS. 2 and 3). Reference numeral 20 is a cam that opens and closes the water stop valve section 11, and is rotatably supported by the body 16 and the case 17. It is press-fitted onto the camshaft 21.

A turbine 22 is mounted on a turbine shaft 23 rotatably supported by the body 16 and the case 17. 24 is a magnet fixed to the turbine 22, N/S
It is magnetized with two poles. Reference numeral 25 denotes a flow path through which the fluid that has passed through the water stop valve section 11 flows inside the cathode 3. The flow path 25 is formed between the body 16 and the case 17.
Only the turbine 22 and the turbine 22 are exposed. The right end of the camshaft 21 passes through the bearing hole of the body 16 and protrudes to the right. A drum 2G is press-fitted onto this right end, and a torsion spring 26a is wound around the outer periphery of the drum 26. The other end of the drum 26 is hooked onto a pin 16a protruding from the body 16.

Reference numeral 16b denotes a bearing portion integrally formed with the body 16, which supports the shaft 13 so as to be slidable in the vertical direction, and maintains a distance between the body 16 and the case 17 to secure the flow path 25. The left end of the camshaft 21 passes through the bearing portion of the case 17 and protrudes to the left, and the switch actuating cam 27 is press-fitted onto this left end. This switch operating cam 27
The actuator of the microswitch 28 is engaged with the cam surface of the microswitch 28 (FIG. 5).

The microswitch 28 is attached to one surface of a plate 30 which is attached to the case 17 with three screws 29 using a pin 31 (shown in FIG. 4) and a nut 32. 33 are two O-rings that maintain watertightness between the case 17 and the camshaft 21, and are coated with grease.
A plate 34 covers the lid to prevent it from coming off. The camshaft 21 has a cam 20. A knurl is provided for press-fitting the drum 26 and the switch actuating cam 27. A gear 27a is integrally formed on the switch actuating cam 27, and this gear 27a meshes with a gear 36 press-fitted onto the handle shaft 35. The handle shaft 35 is rotatably supported by the case I7 and the cover (8), and its left end protrudes through the bearing portion of the cover 18, and the handle 5 is fixed to this left end by a screw 37.

The handle 5 has a protrusion 5a with a portion thereof protruding like a pin, which engages with a groove 18a of the cover 18 and is rotatable within a certain angular range. A handle cover 38 is fitted to the center of the handle to hide the screw 37. 39 is an O-ring inserted between the case 17 and the cover 18.

A handle cam 41 that constitutes a lock mechanism 40 that locks the rotation of the handle 5 and the cam 20 is press-fitted into the handle shaft 35 .

As shown in FIG. 4, the locking mechanism 40 includes a handle cam 41 fitted to the handle shaft 35, and the aforementioned plate).
It is composed of an arm 43 that can swing around a bottle 42 set up at 30, and a spring 44 that urges one end 43a of this arm 43 to press against the outer periphery of the handle cam 41. The handle cam 41 has a nonch 41a on its outer cam surface. The other end 41b of the arm 43 is (
6) engages a motor cam 46 attached to an output shaft 45a of a motor 45. 47 is a motor plate (Fig. 4) for attaching the motor 45;
It is fixed to the case 17 with two screws 48.
The motor 45 is a geared motor with a reduction ratio of 1/160.

In FIG. 1, reference numeral 49 is a circle inserted between the handle shaft 35 and the cover 18 and covered with a plate 50. A magnetic sensor 51 is placed close to the magnet 24, and uses a magneto-electric conversion element such as a Hall element that detects the rotating magnetic field of the magnet 24 and converts it into an electric signal. This magnetic sensor 51 is mounted on a printed circuit board 52, and the printed circuit board 52 is attached to the case 17 with two screws 53.

The electric wires from the printed circuit board 52, the microswitch 28, and the motor 45 pass through the wire harness 54 and the hole 17a of the case 17, and are pulled out from the main body 1 as the case 55 to an electronic control section (not shown). and connected to electric wires (Fig. 1, Fig. 4, Fig. 5).

In Fig. 1, numeral 56 is a waterproof gasket.

Body 16. The case 17 and the cover 18 are the turbine 22
Magnet 24. Magnetic sensor 51. Cam20. Torsion spring 26a, lock mechanism 40 and motor 4
5 is removably attached to the main body l with four screws 4 with an O-ring 56 in between, and then the handle 5 is attached to the handle shaft 35 with screws 37, and the bundle Cover with cover 38. Shaft 13 constituting the water stop valve section 11. Valve 1
4 and the spring 15 are then assembled and the cap 16 is screwed onto the main body 1.

FIG. 10 shows an electric circuit, and the part indicated by the reference numeral 57 and surrounded by a chain line, that is, the microswitch 28. The motor 45 and the magnetic sensor 51 are housed in the cartridge 3.

58 is an electronic control unit (ECU), 59 is a water volume setting device, 6
0 is a power supply connected as shown in the figure, and the electronic control unit 58 has a function of counting electronic signals from the magnetic sensor 51 and energizing the motor 45 when the water supply amount reaches the set value of the water amount setting device 59. There is.

The operation of the above embodiment will be explained based on the flowchart of FIG.

When the handle 5 is rotated 90 degrees to the left from the position shown in FIG. 8, the handle cam 41 is rotated 90 degrees to the left in FIG. 4, and one end 43a of the arm 43 falls into and engages the notch 41a. Also, since the camshaft 21 is rotated 90 degrees to the left in FIG. 2 and 90 degrees to the right in FIGS. 3 and 5 via the gears 36 and 27a, the switch operating cam 27 is
8 and turn it ON. At the same time, the cam 20 pushes up the shaft I3 to separate the valve 14 from the valve seat 1a of the main body 1, thereby opening the water stop valve section 11. In this state, the locking mechanism 40 is locked by engaging the notch 41a of the handle cam 41 with one end 43a of the arm 43, so that even if the handle 5 is released, the water stop valve If remains open and water is supplied. .

rotating the turbine 22 as the fluid passes through the flow path 25;
The magnetic sensor 51 converts the rotation into an electrical signal.

When the handle 5 is first operated 90 degrees to the left to set the metered water supply position, the microswitch 28 is turned on and power is supplied to the magnetic sensor 51 and the electronic control unit 58, so the electric control unit 58 is connected to the magnetic sensor. Count the electrical signals from 51,
When the integrated value reaches the set value of the water amount setting device 59, the motor 45 is energized. When the motor 45 is energized, the motor cam 46 rotates from the state shown in FIG. Then, the locking mechanism 40 is unlocked, the handle cam 41, the switch operating cam 27, and the cam 20 are rotated 90 degrees by the force of the torsion spring 26a and restored to their original positions, and the valve 14 is moved as shown in FIG. The valve returns to the closed state.

At the same time, the microswitch 28 is also turned off and power supply to the electric circuit is also stopped. Also, handle cam 41. The recovery position of the switch actuating cam 27 and the cam 20 is the handle 5.
is regulated by the protrusion 5a of the cover 18 and the groove 18a of the cover 18.

FIG. 12 shows an embodiment in which the flow path formed between the body 16 and the case 17 has a different shape from the above embodiment, and the valve is in an open state in which the cam 20 is rotated 90 degrees to the left compared to FIG. 2. At this time, the degree to which the cam 20 obstructs the fluid flowing through the flow path 25' is small (see FIG. 13).

〔Effect of the invention〕

Since this invention is configured as described above, there is no mechanical load on the turbine! It rotates easily and has good weighing accuracy. In addition, the main parts are removable from the main body in the cartridge 2, making it easy to assemble, and since only the cam and turbine are exposed in the flow path, there are fewer failures, and the valve opening operation is performed by a motor and a spring. Therefore, from this point of view as well, it is possible to realize a metering stop valve that has good metering accuracy, operates reliably, is highly reliable, and is durable.

[Brief explanation of drawings]

1 to 10 show embodiments of the present invention, in which FIG. 1 is a vertical sectional view of the entire electric circuit excluding a part, and FIG.
-2 sectional view, Figure 3 is a diagram of the cartridge part seen from the right side of Figure 2, Figures 4 and 5 are 4-4 in Figure 1, respectively.
Sectional view and 5-5 sectional view, Fig. 6 is a 6-6 sectional view in Fig. 1, Fig. 7 is a 7-7 sectional view in Fig. 6, Fig. 8 is a front view, and Fig. 9 is a water stop. FIG. 10 is an electric circuit diagram, FIG. 11 is a flowchart, and FIGS. 12 and 13 are longitudinal sectional views showing a part of another embodiment. DESCRIPTION OF SYMBOLS 1...Main body, 3...Cartridge, 5...Handle, 11...Water stop valve part, 20...Cam, 22...
Turbine, 24... Magnet, 26a... Spring, 40... Lock mechanism, 45... Motor, 51
...Magnetic sensor, 58...Electronic control unit Fig. 6 Fig. 1G Fig. 7 Fig. 9 Fig. 11 Fig. 1O Fig. 11 Fig. 1 Coarse

Claims (1)

[Claims] A water stop valve part (11) provided in a flow path in the main body, a turbine (22) rotationally driven by water passing through the flow path, a magnet (24) attached to the turbine (22), and a magnet (24) attached to the turbine (22). a magnetic sensor (51) that detects the rotation of the water stop valve (24) and converts it into an electric signal; a cam (20) that opens and closes the water stop valve (11); 20) and a handle (5) that operates the cam (20) in the direction in which the water stop valve opens.
a locking mechanism (40) that locks the rotation of the handle (5) when the water stop valve section (11) is open; a motor (45) that unlocks the locking mechanism (40); and the magnetic sensor. (51) and an electronic control unit (58) that energizes the motor (45) when the set flow rate is reached, and includes a turbine (22), a magnet (24), and a magnetic sensor (51). Cam (20) and spring (26)
a), a locking mechanism (40), and a motor (45) are removably disposed in the main body (1), and the cartridge (3) is equipped with a turbine (2).
2) and the flow path (25, 25) where only the cam (20) is exposed.
') Electronic metered water stop valve.