JPH0629570Y2 - Handle structure of fixed water stopcock - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a handle structure of a fixed-quantity stopcock that automatically closes when a set amount of water is passed, and in particular, one water passage The present invention relates to a handle structure of a metered water stopcock that can perform both constant water discharge and continuous water discharge by a handle.

[Prior Art] In this type of conventional fixed-quantity stopcock, when the water storage volume setting handle is turned to a target value, the valve body is rotated in the flow path opening / closing direction to start water flow. Further, the cam interlocked with the water storage volume setting handle is rotated by an angle corresponding to the rotation angle of the handle. Then, the impeller is rotated by this water flow, the cam is rotated in the pull-back direction through the speed reduction mechanism connected to the impeller, and when the set amount of water is completely passed, the cam drives the valve closing mechanism. Then, the water is stopped (for example, Japanese Patent Publication No. 58-294433).

Further, in order to perform both constant quantity water discharge with one faucet, both the constant quantity water discharge valve and the continuous water discharge valve are provided in the water faucet, and they are configured so that they can be operated by separate operation handles ( For example, JP-A-62-291339).

[Problems to be Solved by the Invention] In the above-mentioned conventional fixed-quantity stopcock, two handles are required to perform continuous water discharge and fixed-quantity water discharge with one faucet, and the faucet has been enlarged.

[Means for Solving the Problem] The handle structure of the fixed-quantity water stopcock of the present invention has a valve element, a valve seat, and an elastic member for urging the valve element in the seating direction, and the valve element is moved in the valve opening direction. A cam and a spindle for driving the cam, which has an opening / closing handle attached at one end, and the cam has a cam mechanism capable of opening the valve body by both forward and reverse rotations of the spindle; and a spindle axial direction. An arm member mounted so as to extend in a radial direction with respect to the spindle and rotatable about the spindle in the spindle circumferential direction, and an arm member integrally provided on the spindle in the spindle circumferential direction. A stopper portion for limiting the rotation range, an arm holding device capable of holding the arm member when the spindle is rotated in the forward direction from the valve closing position to the valve opening position, and the spindle is closed. Valve position An elastic member for biasing the spindle in the closing direction is accumulated force when it is Luo forward, and hold releasing means for forming the unlatching of the arm holding apparatus,
When the spindle is normally rotated from the valve closing position to the valve opening position, the arm member is locked by the stopper portion and rotates together with the spindle, and the spindle is rotated in the reverse direction from the valve closing position to the valve opening position. Sometimes the spindle is provided with the stopper so as to rotate independently of the arm member.

Further, in the handle structure of the fixed-quantity water stopcock of the present invention, as in claim (2), the iron piece is used as the arm member and the iron piece is adsorbed when the spindle is rotated to the valve opening position as the arm holding means. A magnet may be provided. As the iron piece holding / releasing means, a solenoid attached to the magnet and generating a magnetic flux in a direction opposite to the iron piece attracting direction of the magnet when energized may be provided.

[Operation] In the constant quantity water stopper of the present invention, when the spindle for driving the cam is rotated in the forward rotation direction (the constant quantity water discharge direction), the cam separates the valve body from the valve seat, and water passage is started. At this time, the arm member is locked by the stopper portion, rotates together with the spindle, and is held by the holding device. As a result, the spindle is also held in the valve open position via the stopper portion, and the fixed amount water storage is started.

When the amount of stored water reaches a set value, the holding device is released and the spindle is rotated to the valve closed position by the elastic member to stop the water.

On the other hand, when the spindle is rotated from the valve closed position in the reverse rotation direction (continuous water discharge direction), the cam similarly separates the valve element from the valve seat,
Water flow is started. In this case, no pullback force acts on the cam, and water is continuously supplied until the user closes the valve.

According to the present invention, according to the second aspect, when the spindle is rotated to the valve open position, the iron piece is attracted to the magnet and the spindle is locked at the valve open position.
When a set amount of water is passed, the solenoid is energized, and the solenoid generates magnetic flux in the direction opposite to the magnet's iron piece adsorption direction, which separates the iron piece from the magnet and closes the spindle. It is rotated to the valve position.

Embodiments Embodiments will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view (cross-sectional view taken along the line I-I of FIG. 4) of a metered water stopcock according to an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. FIG. 5 is a plan view of the valve body, and FIG. 5 is a bottom view. 6 is a sectional view showing a state in which a handle is attached, FIG. 7 is an upside down perspective view showing the inside of the upper casing, FIG. 8 is an assembly perspective view of an opening / closing spindle,
FIG. 9, FIG. 10 and FIG. 11 are operation explanatory views.

Reference numeral 10 denotes a valve body, which has a water inlet 12 and a water outlet 14, and has a valve body installation chamber 18 having a valve body 16 and an impeller installation chamber 22 having an impeller 20 therein. A flow path is formed so that the inflow port 12 communicates with the outflow port 14 via the valve body installation chamber 18, the cam installation chamber 24, and the impeller installation chamber 22. The valve body installation chamber 18 and the impeller installation chamber 22 are hollowed out in a cylindrical shape from the bottom surface of the valve body 10, respectively, and are separated by screwing caps 26 and 28.

A cylindrical valve seat 30 is hung from the ceiling of the valve body installation chamber 18, and the valve body 16 is urged by a compression coil spring 31 and pressed against the valve seat 30. Disc-shaped valve body 1
A shaft 32 is slidably inserted in a center hole 16a formed through the shaft center portion of the shaft 6, and a start valve 34 is fixed to the lower end of the shaft 32. The start valve 34 is pressed against the seat portion 36 on the lower surface of the valve body 16 by the spring 31. Reference numeral 38 is a guide member that is provided integrally with the valve body 16, and slides along the inner peripheral surface of the cylindrical valve seat 30 to guide the valve body 16 when it moves in the vertical direction in the drawing. ing.

A small hole 16b penetrates the valve body 16, and a cleaning pin 16c is loosely inserted in the valve body 16. Therefore,
In this valve body 16, since the upstream side and the downstream side are communicated with each other by the small holes 16b, the water pressure is applied to both upper and lower surfaces of the valve body 16.

When the shaft 32 is pushed downward, the start valve 34 separates from the seat portion 36, and the valve body installation chamber 18 below the valve body 16 is cam-installed via the space between the shaft 32 and the inner peripheral surface of the central hole 16a. It communicates with the chamber 24. Then, the water pressure on the lower side of the valve body 16 decreases, the valve body 16 is pushed down by the water supply pressure, the inflow port 12 directly communicates with the cam installation chamber 24, and the water flow state is established.

When the pushing-down force acting on the shaft 32 is released, the upper side and the lower side of the valve body 16 are communicated with each other through the small hole 16b so as to have an equal pressure.
6 is pushed up to sit on the valve seat 30, and the water is stopped.

A pivot 40 is provided upright on the cap 28 of the water turbine installation chamber 22, and a central opening 20a of the impeller 20 is fitted onto the pivot 40, whereby the impeller 20 is pivoted.
It is rotatably installed around. A magnet 42 is fixed to the impeller 20, and when the impeller 20 rotates, the magnet 42 also makes a motion of orbiting the periphery of the pivot 40, and the change of the magnetic flux generated by the motion is caused on the upper surface of the valve body 10. It can be detected by the fixed magnetic sensor 44. The detection signal of the magnetic sensor 44 is output to a control circuit (not shown in FIG. 1) via a lead wire 46.

A disk cam 50 for pressing the shaft 32 downward is installed in the cam installation chamber 24. The cam 50 is fixed to the lower end of the opening / closing spindle 52 by a nut 53, and the opening / closing spindle 52 penetrates the intermediate casing 54 and the upper casing 56 and projects upward. As shown in FIG. 8, the cam 50 has a cam surface 50a inclined over about half a circumference, and the reference numeral 50b indicates the cam surface 5.
0a is the deepest water stop position. Also, reference numeral 50
Reference characters c and 50d denote water passage positions that are off the cam surface 50a.

The intermediate casing 54 is for sealing the upper surface of the cam installation chamber 24, and has an insertion hole 58 for the opening / closing spindle 52.
And an insertion portion 60 into the cam installation chamber 24. A groove 62 is provided around the inner peripheral surface of the insertion hole 58, and the groove 62 communicates with the outside of the faucet via a passage 64. Reference numerals 66, 68, and 70 respectively indicate O-rings for sealing. Even if the O-ring 68 deteriorates and water leaks from the cam installation chamber 24, the passage 64 is for discharging the water so as not to enter the upper electric control circuit section.

An armature stator 72 is slidably fitted on the opening / closing spindle 52 in an upper casing 56, and the armature 7 made of iron pieces is attached to the armature stator 72.
4 is fixed by a spring pin 76. In this embodiment, the armature stator 72 and the spring 74 form an arm member. As clearly shown in FIG. 8, the armature stator 72 has a small diameter portion 78 extending upward in FIG. 1 along the opening / closing spindle 52, and the small diameter portion 78 is provided at the axis of the armature stator 72. On the other hand, the notch 80 is provided such that the angle between the notch surfaces 80a and 80b is 135 °.

An actuator 82 for rotating the armature stator 72 is fixed to the opening / closing spindle 52 with a screw (not shown). The actuator 82 has a disk shape and is integrally formed with a convex portion 84 that engages with the notch 80 of the armature stator 72. The convex portion 84 is of a fan type having an angle of 45 ° with respect to the axis of the actuator 82.

In this embodiment, the convex portion 84 constitutes a stopper portion that limits the range of rotation of the armature stator 72 and the armature 74 as the arm members.

A magnet 86 is embedded in the operator 82, an opening 88 is formed in the operator's radial direction, and a steel ball 9 is press-fitted into the opening 88 via a spring 90.
Equipped with 2.

As clearly shown in FIG. 7, the upper casing 56 includes
A ring 94 is integrally formed so as to surround the actuator 82, and slits 96a and 96b with which the steel balls 92 are engaged are formed in the ring 94, respectively.
The openings a and b are formed so that the angle around the open / close spindle 52 is 90 °.

As shown in FIGS. 7 and 8, the actuator 82 and the armature stator 7
A torsion coil spring 98 is installed as a return spring (an elastic member for urging the spindle in the valve closing direction) between the two and one end 98a of the torsion coil spring 98 is fixed to the armature stator 72, and the other. Edge 98
b is locked to a stopper 100 provided on the ring 94.

As shown in FIG. 7, a circuit board 102 on which a control circuit member is mounted is installed in the upper casing 56, and a reed switch 104 capable of detecting the proximity of the magnet 86 of the actuator 82 is provided on the board 102. Has been.

Above the open / close spindle 52 is a cylindrical setting spindle 1.
06 is externally fitted. The upper end of the setting spindle 106 projects to the outside of the fixed water stopcock, and the lower end thereof has a gear 108.
Are fixed by screws 109. Reference numeral 106c denotes a C ring systematically attached to the opening / closing spindle 52 at both upper and lower ends of the setting spindle 106.
6 positioning is performed.

In the upper casing 56, a cord switch 1 in which a shaft 112 is rotated by a gear 110 that meshes with the gear 108
14 are installed. Further, as shown in FIG. 7, a magnet 116 is installed as an arm holding device in the upper casing 56 to attract and hold the armature 74 as an arm member. A solenoid 118 is wound around the magnet 116 as a holding release means for releasing the holding by generating a magnetic flux in a direction opposite to the magnetic flux direction of the magnet 116 when energized.
The magnet 116 is provided integrally with the iron core 116a, and the armature 74 can be attracted to the end of the iron core 116a. The solenoid 118 is fitted on the iron core 116a.

The upper casing 56 has a stopper 7 for the armature 74.
4S is provided, and the armature 74 is rotatable within a 90 ° range between the stopper 74S and the magnet 116. The handle 122 is provided with a pointer (not shown) for indicating the amount of stored water, and the faucet mounting plate 127
Etc. are provided with a scale (not shown) indicating the amount of stored water.

As shown in FIG. 6, handles 120 and 122 are fitted onto the open / close spindle 52 and the setting spindle 106, respectively, and fixed by screws 124 and nuts 126.

Reference numerals 128 and 130 in FIG. 1 denote O-rings. Also,
Reference numeral 132 indicates a lead wire for connecting the control circuit on the circuit board 102 to an external battery or a display device (not shown), and the fixed water stop outside the opening 134 of the upper casing via the code packing 133. Have been pulled out.

Next, the operation of the above-described fixed-quantity water stopcock will be described with reference to FIGS. 9A to 11A are bottom views of the upper casing for showing the movement of the armature 74 and the like in the upper casing 56, respectively.
8B shows the movement of the cross section taken along the line BB in FIG.

FIG. 9 shows a water-stop state, and in this state,
The armature 74 is separated from the magnet 116, is biased by the torsion coil spring 98, and is pressed against the stopper 74S (FIG. 7 also relates to this state).
The cam 50 has a water stop position 5 that comes into contact with the center of the cam surface 50a
0b is located above the shaft 32, and the valve element 16 is seated on the valve seat 30 and is in a water-stopped state (FIG. 1).

In this water stop state, one side surface 84a of the convex portion 84 of the actuator 82 shown in FIG. 8 is in contact with one notch surface 80a of the small diameter portion 78 of the armature stator 74. . Further, a part of the steel ball 92 is engaged with the one slit 96a, and the open / close spindle 52 is in a slightly locked state.

When performing fixed quantity water discharge with this constant quantity water stopper, the handle 122 is grasped and the setting spindle 106 is rotated, and the pointer is adjusted to the scale so as to obtain a desired water storage amount. When the setting spindle 106 rotates, the shaft 112 of the cord switch 114 rotates via the gears 108 and 110, and the amount of stored water is set. This set value is input to the control circuit mounted on the circuit board 102.

Then, the open / close spindle is rotated 90 ° counterclockwise in FIG. 9 (direction of arrow X in FIG. 8). Then, the cam 50 is rotated until the water passage position 50c of the cam 50 is above the spindle 32, the spindle 32 is pushed down, the valve element 16 is opened, and water passage is started.
Further, at this time, the notch surface 80a is pushed by the convex side surface 84a, and the armature stator 72 also rotates 90 °. Then, the armature 74 also rotates 90 °, abuts the magnet 116, and is attracted and held (FIG. 10). Further, when the magnet 86 turns on the reed switch 104, the control circuit starts operating.

The impeller 20 rotates with the start of water flow, and this rotation is detected by the magnetic sensor 44. A control circuit (comparator) mounted on the circuit board 102 counts the number of rotations of the impeller 20, and energizes the solenoid 118 when the number of counts corresponding to the set amount of stored water is reached. As a result, the magnetic flux of the magnet 116 is canceled, the armature 74 is separated from the magnet 116, and the armature stator 72 is rotated by the torsion coil spring 98 in the direction of the arrow Y in FIG. At this time, since the notch surface 80a is in contact with the convex side surface 84a, the actuator 82 is also rotated 90 °. Therefore, the opening / closing spindle 52 also rotates 90 ° in the direction of the arrow Y, the cam 50 also rotates 90 °, and the water stop position 50
b moves above the shaft 32. This allows
The valve body 16 is seated on the valve seat 30 and the water is stopped.

In addition, the opening / closing handle 1
When 20 is rotated in the valve closing direction, the water is stopped by rotating the cam 50. In this case, the reed switch 104 is turned off due to the separation of the magnet 86. In the control circuit, the solenoid 118 is operated based on the off signal of the reed switch 104.
Then, the armature 74 is released and returned to the position shown in FIG.

When performing continuous water discharge from the water stopped state shown in FIG. 9, the opening / closing spindle 52 is rotated clockwise in FIG. 9 (direction of arrow Y in FIG. 8). Then, with the cam 50, the water stop position 5
0d moves to the upper side of the shaft 32, and the shaft 32 is pushed down to open the valve body 16 and start water passage. When the opening / closing spindle 52 is rotated 90 °, the steel ball 92 is engaged with the slit 96b, and the opening / closing spindle 52 is slightly locked. In this case, the convex portion 84 only rotates inside the notch 80, and the armature 74 does not rotate (FIG. 11). Unless the faucet user turns the opening / closing spindle 52 in the direction of arrow X in FIG.
This water flow state will continue forever. When the user turns the opening / closing spindle in the direction of arrow X in FIG.
It returns to the water stop state shown in the figure.

In the above embodiment, the setting spindle 1 is used as the opening / closing spindle 52.
Although 06 is externally fitted, the opening / closing spindle 52 may be externally fitted to the setting spindle 106.

In the present embodiment, the handles 120 and 122 are coaxially and compactly arranged, and the external configuration is simple. Moreover, the space occupied by the handle and the spindle is halved, the entire faucet is small, and the installation space for the fixed water stopcock is small.

In addition, in the above embodiment, the integration of the flow rate, the comparison with the set water storage amount, and further, the valve closing drive and the like are performed by an electric control system, and there is no error or malfunction, and an accurate quantitative water discharge is ensured. I can do it.

Further, in the above-described embodiment, when the open / close handle is turned to an intermediate angle between 0 ° and 90 ° when performing continuous water discharge, the middle part of the inclination of the cam surface 50a of the cam 50 hits the shaft 32. Become. In this case, the valve body 16 is half opened, and continuous water discharge can be performed at a throttled flow rate.

[Effect] As described above, according to the structure of the present invention, since the continuous water discharge and the constant amount water discharge can be performed with one handle, the constant amount water stopcock has a compact structure.

According to the structure of claim (2) of the present invention, when the spindle is rotated to the valve open position, the spindle is held very reliably. Further, the retention of the iron piece is extremely surely released by the solenoid, and the valve closing water stop operation is surely performed. Further, the drive mechanism for closing the valve also has an extremely simple structure, and the cost for forming the valve body can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a fixed water stopcock according to an embodiment of the present invention,
2 is a side view, FIG. 3 is a plan view, FIG. 4 is a plan view of the valve body, and FIG. 5 is a bottom view. FIG. 6 is a sectional view showing a state in which a handle is attached, FIG. 7 is an upside down perspective view showing the inside of the upper casing, FIG. 8 is an assembly perspective view of an opening / closing spindle, FIGS. 9 and 10. And FIG. 11 is an operation explanatory view. 10 ... Valve body, 16 ... Valve body, 20 ... Impeller, 30 ... Valve seat, 52 ... Open / close spindle, 74 ... Armature, 82 ... Actuator, 106 ... Setting spindle, 114 ... Cord switch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryohei Tsukamoto 3-77 Minato-cho, Tokoname City, Aichi Prefecture Enax Enokido Co., Ltd. (72) Inventor Yu Nakano 1 Noda, Oda-cho, Niwa-gun, Aichi Prefecture Tokai Rika Denki Seisakusho (72) Inventor Kazuhiko Yamada No. 1 Noda, Oguchi-cho, Niwa-gun, Aichi Prefecture Toda Rika Denki Seisakusho Co., Ltd. (72) Yukio Seki 4-chome, Nakamura-ku, Aichi Prefecture No. 27 in Tokai Rika Sales Co., Ltd. (56) Reference JP-A-63-62980 (JP, A) JP-A-62-177376 (JP, A) Actually open 59-49990 (JP, U) Actual-open Sho 63 -37045 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A handle structure for opening and closing a valve body seated on a valve seat provided in a flow passage in a valve body of a metering water stop valve, the valve body, a valve seat on which the valve body is seated, and the valve. An elastic member for urging the body in the seating direction; a cam for moving the valve body in the valve opening direction; and a spindle for driving the cam having an opening / closing handle attached to one end,
The cam has a cam mechanism capable of opening the valve body by both normal rotation and reverse rotation of the spindle, and a cam mechanism that extends in a radial direction with respect to the axial direction of the spindle and in a circumferential direction of the spindle with respect to the spindle. An arm member rotatably mounted to the spindle, a stopper portion integrally provided on the spindle for limiting the rotation range of the arm member in the spindle circumferential direction, and the spindle opening from the valve closed position. An arm holding device capable of holding the arm member when the arm member is rotated in the normal direction to the valve position, and an energizing force that drives the spindle in the valve closing direction when the spindle is normally rotated from the valve position. Elastic member, and holding release means for releasing the holding of the arm holding device,
When the spindle is normally rotated from the valve closing position to the valve opening position, the arm member is locked by the stopper portion and rotates together with the spindle, and the spindle is rotated in the reverse direction from the valve closing position to the valve opening position. Sometimes, the handle structure of the fixed water stopcock is provided with the stopper so that the spindle rotates independently of the arm member. 2. The arm member includes an iron piece, the arm holding means includes a magnet that attracts the iron piece when the spindle is rotated to a valve opening position, and the holding release means is attached to the magnet. The handle structure of a fixed-quantity water stop according to claim 1, further comprising a solenoid that generates a magnetic flux in a direction opposite to a magnetic flux of the magnet when attracting electricity.