JP2801976B2 - Ball tap for water tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball tap for a water tank, and more particularly to a pilot ball tap for a water tank.

[0002]

2. Description of the Related Art Conventionally, various taps for a water tank provided in a water tank have been provided, and a typical one is disclosed in Japanese Patent Application Laid-Open No. Sho 60-105724. As shown in FIG. 8 and FIG. 9, the pilot valve is provided with a pilot valve 7 which is opened and closed by a float 4 floating on the water surface in the water storage tank 1 at a front portion of the water tap body 3. A pilot valve 7 is provided at the rear end of an arm 8 extending forward with a rear portion pivotally attached to the main body 3, and the float 8 is provided at the front end of the arm 8. Then, as the float 4 moves up and down as indicated by the imaginary line in the figure according to the fluctuation of the water level in the water storage tank 1, the pilot valve 7 is opened and closed, and the water supply into the water storage tank 1 is automatically performed. It has become.

[0003]

However, in the above-mentioned conventional example, the float 4 is attached to the front of the water tap main body 3 via the arm 8, so that the float 4 is mounted in front of the water tap main body 3. And the ball tap itself becomes large, and the arm 8 is mounted on the hydrant body 3 so that the water level rises.
As it descends, it rotates around the shaft. Therefore, other members,
For example, the arm 3 of the siphon tube 30 or the cleaning lever 31
If there is a member such as a ball chain 33 attached to the arm 2 or the arm 32, the float 4 comes into contact with these members and the movement is hindered.
This hinders normal operation, and there is a problem that the size of the water storage tank 1 and the arrangement of the internal members are greatly restricted.

An object of the present invention is to provide a ball tap for a water tank which is compact and has less mounting restrictions.

[0005]

According to the present invention, in order to achieve the above object, a pilot-type ball tap for a water tank provided with a pilot valve, which is opened and closed by a float floating near a water surface in a water storage tank, on a water tap body. , A water supply pipe 2 whose tip extends to near the bottom of the water storage tank 1 and is opened
The float 4 is attached to the water supply pipe 2 so as to be vertically movable using the water supply pipe 2 as a guide, and a shaft 5 protruding above the upper part of the float 4 is provided on the water tap main body 3. An arm 8 is inserted through the guide cylinder 6 and is operated to open and close the pilot valve 7 by a pilot valve 7 provided on the water faucet body 3. The arm 8 and the shaft 5 projecting from the guide cylinder 6 are provided. Are rotatably connected in a direction perpendicular to the direction.

[0006]

The float 4 moves up and down along the water supply pipe 2 in accordance with the fluctuation of the water level in the water storage tank 1. When the water in the water storage tank 1 is used and the water level falls, the float 4 moves. The shaft 5 is lowered by the lowering of the float 4, and the arm 8 connected to the shaft 5 is pulled to open the pilot valve 7 and water is supplied from the water supply pipe 2 into the water storage tank 1. Further, when the water level in the water storage tank 1 rises as the water supply is performed, the rise of the water level causes the float 4 to move the water supply pipe 2.
Along with the shaft 5
Rises, the arm 8 connected to the shaft 5 returns to the normal position, the pilot valve 7 is closed, and the supply of water into the water storage tank 1 is stopped.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view. In the figure, reference numeral 3 denotes a water faucet main body, which is constituted by a water supply part 9, a water discharge part 10, and a water passage 11 connecting these. In addition, hydrant body 3
An opening 12 communicating with the water passage 11 is provided at the front end, and a main valve seat 13 coaxial with the opening 12 and smaller in diameter than the opening 12 is provided. The opening 12 is closed by the lid 14. The main valve body 15 is provided between the lid 14 and the main valve seat 13. The cover 14 is fixed by a cap nut 16 screwed around the outer periphery of the opening 12, and the main valve body 15 is disposed between the cover 14 and the opening 12.
3 relatively. Here, the main valve element 1
5 is formed of an elastic member such as a rubber plate. The lid 14 is formed in a concave shape facing the main valve body 15, and a pressure chamber 17 is formed behind the main valve body 15. A small pilot hole 18 is formed in the lid 14, and the pressure chamber 17 and the outside of the water tap main body 3 are communicated through the pilot hole 18. Pilot valve seat 19 at opening edge
Are formed in a protruding state. Further, the lid 14 is provided with an arm mounting portion 20 having a pair of support pieces 20a facing each other on the outer surface of the lid 14 with the pilot valve seat 19 interposed therebetween. The upper end of the arm 8 is axially mounted between the support pieces 20a, and a pilot valve body 22 is provided on the front end surface below the axial mounting portion 21 with respect to the pilot valve seat 19. 7 is opened and closed. Further, the arm 8 once extends laterally so as to go around the hydrant main body 3 from the arm mounting portion 20, then extends rearward, and is connected to the shaft 5 via the connection pin 23 as shown in FIG. .

The shaft 5 moves up and down as the float 4 moves up and down. On the other hand, the arm 8 rotates around the shaft mounting portion 21 of the arm mounting portion 20, so that the arm 8 and the shaft Reference numeral 5 denotes a state in which the connecting member 5 is rotatably connected around the connection pin 23. The float 4 is formed in a hollow cylindrical shape as shown in FIG. 4, and has a through hole 4 a having a larger diameter than the water supply pipe 2 on a concentric circle.
The float 4 is attached to the water supply pipe 2 so that the water supply pipe 2 is inserted into the through hole 4a, and moves up and down along the water supply pipe 2. A shaft 5 protrudes upward from the upper surface of the float 4, and an upper end of the shaft 5 is rotatably connected and fixed to an arm 8. Here, the rotation of the float 4 is restricted by the guide cylinder 6 provided on the water tap main body 3 so as not to rotate in the horizontal plane with respect to the water supply pipe 2. The guide cylinder 6 is provided so as to protrude from the side surface of the hydrant body 3 and has a through hole 6a penetrating in the vertical direction. The shaft 5 protruding from the float 4 is inserted into the through hole 6a, and the arm 8, the rotation is regulated.
Further, the guide cylinder 6 also serves as a guide for smoothly moving the float 4 up and down.

When the water level in the water storage tank 1 is lowered and the float 4 is lowered, the arm 8 is caught on the upper end of the guide cylinder 6 to prevent the float 4 from dropping downward. 6 and 7 show the operation state of the float 4 due to the fluctuation of the water level, FIG. 6 shows the state when the water level rises, and FIG. 7 shows the state when the water level falls. FIG. 5 shows another embodiment of the float 4 in which the bottom surface is open.

The operation of the above-mentioned ball tap is basically the same as that of a conventional pilot type ball tap. More specifically, when the float 4 descends due to a decrease in the water level in the water storage tank 1, the arm 8 is moved through the shaft 5 to move the arm 8 via the shaft 5. The pilot valve 7 moves downward to open, and the water in the pressure chamber 17 is discharged. As a result, the pressure on the primary side of the water passage 11 becomes larger than the pressure in the pressure chamber 17, and the main valve body 15 is
, The valve opens and the water on the primary side flows to the secondary side,
Water is supplied from the water discharge section 10 into the water storage tank 1 via the water supply pipe 2.

When the float 4 rises due to the rise in the water level in the water storage tank 1, the arm 8 moves upward through the shaft 5, the pilot valve 7 closes, and the pressure in the pressure chamber 17 becomes higher than the primary side. The main valve body 15 is pressed against the main valve seat 13 to stop water supply. At this time, the force applied to the pilot valve 7 is much smaller than the pressure on the primary side due to the relationship of the hole diameter, and the size of the float 4 can be reduced as compared with the method of directly suppressing the pressure on the primary side.

[0012]

As described above, according to the present invention, a water supply pipe whose leading end extends to near the bottom of a water storage tank and is opened from a water faucet main body, and is vertically movable with the water supply pipe as a guide. The arm that attaches a float to the guide cylinder provided in the hydrant body, inserts a shaft projecting upward from the upper part of the float into an open / close operation of the pilot valve from the pilot valve provided in the hydrant body. Protruding, with this arm,
Since the shaft protruding from the guide cylinder is rotatably connected in a direction orthogonal to the shaft, the float can be arranged together with the water supply pipe in the installation portion of the water supply pipe which has conventionally been a dead space. Since the direction of movement can be the vertical direction along the water supply pipe, the space occupied by the movement of the float can also be reduced, the ball tap itself can be reduced in size, the size and shape of the water tank, etc. The ball tap can be mounted with less restrictions such as the mounting position of the member.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is an exploded perspective view showing a connection state of the shaft and the arm in the same.

FIG. 4 is a sectional view of the float according to the first embodiment;

FIG. 5 is a cross-sectional view showing another embodiment of the float according to the present invention.

FIG. 6 is a side view showing an operation state of the above-mentioned float, showing an ascending state.

FIG. 7 is a side view showing an operation state of the above floating member and showing a lowered state.

FIG. 8 is a partial cross-sectional view of a conventional example, partially cut away.

FIG. 9 is an overall configuration diagram of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water storage tank 2 Water supply pipe 3 Main body of water tap 4 Float 5 Shaft 6 Guide cylinder 7 Pilot valve 8 Arm

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasuo Maeda 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (56) References JP-A-59-117972 (JP, A) Jpn. JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E03D 1/33 F16K 31/26

Claims (1)

(57) [Claims] 1. A water tap for a pilot-type water tank provided with a pilot valve, which is opened and closed by a float floating near a water surface in a water storage tank, on a water tap main body. A guide is provided on the water tap main body, which is attached to the water pipe so as to be movable up and down using the water pipe as a guide, and a shaft protruding upward from the upper part of the float. An arm that penetrates the cylinder and opens and closes the pilot valve from the pilot valve provided on the hydrant body protrudes, and this arm,
A ball tap for a water tank, wherein the ball tap is rotatably connected in a direction orthogonal to a shaft protruding from the guide cylinder.