JP2000230652A - Valve structure and faucet with the valve structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the power required for valve opening by providing such a structure as to move a cylinder inserted into a passage in such a manner as to be movable forward and backward by a flow and block a cylinder outflow port provided on the cylinder by a valve element, and specifying the relation of the opening area of the cylinder outflow port to the passage opening area corresponding to a seal member. SOLUTION: In the application to a washing machine single faucet as a faucet having a valve structure built in a spout, a valve unit 10 consisting of a cylinder 12, a valve element 13, a spring 14, a valve element stopper 16, a bar 18 as cylinder moving means and the like is built in the spout having a passage outlet part 4 for connecting a washing machine connecting member at the tip. When the washing machine connecting member is connected to the passage outlet part 4, the forward and backward movement of the bar 18 is transmitted to the cylinder 12 through a transmitting member to block a cylinder outflow port 35 by the valve element 13 by the force of the spring 14. At this time, when the opening area of the cylinder outflow port 25 is A, and the passage opening area corresponding to a seal member 8 is B, each part is set so that the relation of A>(B-A) is satisfied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve structure for opening and closing liquid and air flowing in a flow path and a faucet having the valve structure.

[0002]

2. Description of the Related Art A conventional valve structure is disclosed in Japanese Patent Application Laid-Open No. 10-73.
195 is disclosed. This valve is provided at the water outlet of the faucet, and has a valve structure that opens when a hose joint is connected to the water outlet and closes when the hose joint is removed. In other words, this valve structure is configured to automatically close the valve even if the hose joint comes off due to an accident or the like.

[0003]

In the conventional valve structure, when the hose joint which has been disconnected during use is tried to be connected to the water outlet of the water faucet again, the water pressure remains inside the water outlet. Therefore, it was necessary to overcome this water pressure and open the valve, which required great force for reconnection. The present invention has been devised in order to solve such a problem. By reducing the pressure receiving area of the driving portion for opening the valve, the valve can be opened even when the internal pressure remains inside the water passage. The purpose is to reduce the force to perform.

[0004]

According to claim 1 of the present invention,
A flow path, a cylindrical body inserted into the flow path so as to be able to move forward and backward, and a valve body closing the cylindrical body outlet provided in the cylindrical body by moving the cylindrical body in the same direction as the flow. A valve structure having: urging means constantly urged to the cylinder in the valve body direction; and a cylinder moving means for moving the cylinder against the urging means. A seal member for sealing the flow path and the cylindrical body is provided in the cylindrical body or the flow path, and an opening area A of the cylindrical body outlet and a flow path opening area B corresponding to the seal member are defined as A> (B -A).

According to a second aspect of the present invention, the flow path has a flow path outlet, and the flow path outlet is a joint for connecting to another flow path. The configuration is such that the cylindrical body is moved. In the third aspect, the valve body is provided with the second urging means so that the valve body keeps in contact with the cylindrical body even when the cylindrical body is moved by the cylindrical body moving means. According to a fourth aspect of the present invention, there is provided a faucet provided with an opening / closing operation means and a spout, wherein the spout incorporates any one of the valve structures of the first to third aspects.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, and is an external view of a single faucet for a washing machine as a faucet in which the valve structure of the present invention is incorporated in a spout. The single faucet 1 for the washing machine is provided with an opening / closing handle 2 as opening / closing operation means, and water is supplied to the spout 3 by opening / closing the opening / closing handle 2. The spout 3 is provided with a flow path outlet 4 as a joint. By connecting a washing machine connecting member 5 (described later in FIG. 3) to the flow path outlet 4, a washing machine (not shown) is provided. ) Can be supplied.

FIG. 2 is a cross-sectional perspective view of the spout with the washing machine connecting member removed, and FIG. 3 is a cross-sectional perspective view of the spout with the washing machine connecting member connected to supply water. FIG. 5 is a sectional perspective view of the spout, showing a state in which water is not supplied, to which a washing machine connecting member is connected, and FIG.
FIG. 6 is a sectional view corresponding to FIG. 3, and FIG.
Is a sectional view corresponding to FIG. 4, FIG. 8 is an external perspective view of a main part of the valve structure, and FIG. 9 is an exploded perspective view of a main part of the valve structure.

The spout 3 incorporates an O-ring 8 as a sealing member, a spring 9 as an urging means, and a valve unit 10 as a main part of a valve structure in a flow path 7 of the spout main body 6. The outlet main body 11 is screwed and fixed with the flat packing 30 interposed therebetween.

The valve unit 10 includes a cylinder 12, a valve 13, a spring 14 as a second urging means, a transmission member 15, a valve stopper 16, a valve retaining ring 17, and a rod 18 as a cylinder moving means. , A rod stopper 19 and a rod retaining ring 20, and the advance / retreat of the rod 18 is transmitted to the cylinder 12 via the transmission member 15. Since the valve unit 10 cannot be assembled into the spout 3 with the rod stopper 19 and the rod retaining ring 20 assembled, it is necessary to screw the flow path outlet main body 11 into the spout main body 6 before assembling.

The valve element 13 is inserted into a valve element bearing 21 of a transmission member 15 with a spring 14 interposed therebetween, and a valve element stopper 16 is fixed by a valve element retaining ring 17. Transmission member 15
Are provided with four notches 22 for dodging the valve body stopper 16, and are configured to come into contact with a valve body stopper receiving portion 23 provided in the flow path outlet body 11.

A washing machine connection member 5 is connected to the flow passage outlet 4. As a result, the rod stopper 19 comes into contact with the rod stopper receiving portion 24 of the washing machine connecting member 5, and the rod 18 moves in the direction opposite to the flow, and at the same time, the cylindrical body 12 also moves. . Note that the urging force of the spring 9 is constantly applied to the cylinder 12, and when the washing machine connection member 5 is not connected, the cylinder 12 moves in the same direction as the flow, and the cylinder outlet port 25 and the valve are connected. The body 13 comes into contact, and the valve body stopper 16 comes into contact with the valve body stopper receiving portion 23 to stop. That is, the cylindrical body outlet 25 is closed by the valve body 13 so as to stand still, so that water can be stopped.

In the state where the washing machine connecting member 5 is connected,
As described above, the cylinder 12 moves in the direction opposite to the flow, but the valve 13 also moves in the same manner as the cylinder 12. This is because the urging force of the spring 14 is constantly applied to the valve 13, and the valve 13 is configured to close the cylindrical outlet 25 if the flow is stopped by closing the opening / closing handle 2 or the like.
Conversely, when the opening / closing handle 2 is opened or the like, the valve body top side 26
And a pressure difference is generated between the valve body back side 27 and the pressure difference.
By moving the valve 13 in the flow direction by overcoming the urging force of No. 4, water can be supplied to the washing machine.

The above-described movement of the valve body 13 in a state where the washing machine connecting member 5 is connected can prevent the backflow, and the backflow of the sewage from the washing machine which is easily kept connected by the hose at all times. Can be prevented, and the water stop function unit and the backflow prevention function unit can be combined into one unit, so that the faucet can be made compact.

Next, the force when connecting the washing machine connecting member 5 will be described. When the pressure in the flow path 7 is almost zero by closing the opening / closing handle 2, the pressure difference between the valve body top surface side 26 and the valve body rear side 27 becomes almost zero. The force at the time of connection, that is, the force for pushing the rod 18 only acts on the urging force of the spring 9.

However, when pressure is trapped in the flow path 7, a pressure difference occurs between the top surface 26 of the valve body and the back surface 27 of the valve body, and a force that presses the valve 13 and the cylinder 12 in the flow direction is generated. Has occurred. When the rod 18 is pushed in this state, the cylinder 12
Moves, but the valve 13 cannot move due to the above-mentioned pressure difference. That is, the force for pushing the rod 18 is changed from the channel opening area B corresponding to the O-ring 8 to the cylindrical outlet opening area A.
Is the resultant force of the force obtained by multiplying the area obtained by subtracting the pressure difference and the urging force of the spring 9.

In the valve structure of the prior art, in order to open the valve, it is necessary to overcome the pressure difference of the area corresponding to the valve opening (corresponding to the cylindrical outlet opening area A in the present invention), and to push in the valve.
The force was a combined force of the force obtained by multiplying the area corresponding to the valve opening by the pressure difference and the urging force of the spring. Here, in the present invention, if the cylindrical outlet opening area A is configured to be larger than the area obtained by subtracting the cylindrical outlet opening area A from the flow path opening area B, the push-in area is smaller than the valve structure of the prior art. The force can be reduced. Needless to say, this is the case where the biasing force of the spring is not different between the prior art and the present invention.

For example, if the cylinder 12 is made of a press-formed product of a thin metal plate, the area obtained by subtracting the opening area A from the passage opening area B from the passage opening area B can be made very small. Since the path 28 is not narrowed, it is possible to ensure both the water discharge amount and the pushing force.

At the tip of the washing machine connecting member 5, there is provided a joint portion 32 to which a hose 31 is connected. A packing 33 mounted in an annular groove in the joint portion 32 and a ball provided upstream of the annular groove are provided. A plurality of balls 34 mounted on the mounting portion;
Flanged slide ring 3 for pressing each ball 34 from outside
5, a spring 36 for urging the slide ring 35 in the end direction, and a split ring 37 provided on the upstream side of the ball 34 for stopping the slide ring. In a state where the washing machine connection member 5 is connected to the flow path outlet main body 11, the ball 34 is engaged and fixed in the annular groove 40 of the flow path outlet main body 11.

Incidentally, the valve structure of the present invention is not limited to a single faucet for a washing machine. For example, a simple sanitary faucet which can discharge water by pushing a rod-shaped pusher provided at a water discharge port. It can also be applied to a valve that shuts off various liquids and air in the flow path.

[0021]

The present invention is embodied in the above-described embodiment, and has the following effects.

A valve structure having a flow path, a cylindrical body inserted into the flow path so as to be able to move forward and backward, and a valve body closing a cylindrical body outlet provided in the cylindrical body as the cylindrical body moves forward and backward. There is provided an urging means constantly urged in the direction of the valve body to the cylinder, and a cylinder moving means for moving the cylinder against the urging means. A seal member for sealing a cylindrical body is provided in the cylindrical body or the flow path, and an opening area A of the cylindrical flow outlet and a flow path opening area B corresponding to the seal member are defined as A>
(BA), it is possible to reduce the pressure receiving area of the drive unit for opening the valve, and to reduce the force for opening the valve even when the internal pressure remains inside the water passage. Can be.

The flow passage has a flow passage outlet opening, and the flow passage outlet opening is a joint for connecting to another flow passage. Since the body is moved, the connection force of another flow path can be reduced even when the internal pressure remains inside the water passage.

Since the valve body is provided with the second urging means so as to keep the valve body in contact with the cylindrical body even when the cylindrical body is moved by the cylindrical body moving means, The valve element can be made to function as a check valve, and even if it is legally necessary to incorporate the check valve, there is no need to newly provide a check valve, thereby saving space and reducing cost.

Since the spout of the faucet incorporates the above-described valve structure, connection of the connecting member to the spout becomes easy.

[Brief description of the drawings]

FIG. 1 is an external view of a single faucet for a washing machine in which a valve structure of the present invention is incorporated in a spout.

FIG. 2 is a sectional perspective view of the spout showing a state in which a washing machine connecting member is removed.

FIG. 3 is a cross-sectional perspective view of the spout showing a state in which a washing machine connection member is connected and water is being supplied.

FIG. 4 is a sectional perspective view of the spout to which a washing machine connection member is connected and water is not supplied.

FIG. 5 is a sectional view corresponding to FIG. 2;

FIG. 6 is a sectional view corresponding to FIG.

FIG. 7 is a sectional view corresponding to FIG.

FIG. 8 is an external perspective view of a main part of a valve structure.

FIG. 9 is an exploded perspective view of a main part of a valve structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Single faucet for washing machines (faucet) 2 ... Opening / closing handle (opening / closing operation means) 3 ... Spout 4 ... Flow path outlet part (joint) 5 ... Washing machine connection member (another flow path) 6 ... Spout main body 7 ... Flow path 8 ... O-ring (seal member) 9 ... Spring (biasing means) 10 ... Valve unit (main part of valve structure) 11 ... Flow path outlet body 12 ... Cylinder 13 ... Valve 14 ... Spring (2nd 15 ... Transmission member 16 ... Valve stopper 17 ... Valve retaining ring 18 ... Rod (cylindrical body moving means) 19 ... Rod stopper 20 ... Rod retaining ring 21 ... Valve bearing 22 ... Notch Reference numeral 23: valve body stopper receiving part 24: rod body stopper receiving part 25 ... cylindrical body outlet 26 ... valve body top side 27 ... valve body rear side 28 ... cylindrical body flow path 30 ... flat packing A ... cylindrical body outlet opening Area B: Channel opening area

Claims (4)

[Claims] 1. A flow passage, a cylinder inserted into the flow passage so as to be able to move forward and backward, and a cylinder outlet provided in the cylinder by moving the cylinder in the same direction as the flow. A valve body having a valve element for closing the cylinder, a biasing means constantly biased toward the valve body in the valve body direction, and a cylinder moving means for moving the cylinder against the biasing means. Further comprising a sealing member for sealing the flow path and the cylindrical body in the cylindrical body or the flow path, an opening area A of the cylindrical body outlet and a flow path opening area B corresponding to the seal member. , A> (BA). 2. The apparatus according to claim 2, wherein the flow path has a flow path outlet, and the flow path outlet is a joint connected to another flow path. The valve structure according to claim 1, wherein the body is configured to move. 3. The valve body is provided with a second urging means so that the valve body remains in contact with the cylinder body even when the cylinder body is moved by the cylinder body moving means. The valve structure according to claim 2, wherein: 4. A faucet provided with an opening / closing operation means and a spout, wherein the spout incorporates any one of the valve structures according to claims 1 to 3.