JPH0619663Y2 - Low tank and operation handle for low tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a low tank for supplying flush water to a toilet bowl and an operating handle thereof, and in particular, is improved to reduce residual water when water is supplied to the toilet bowl. Low tank and operating handle.

[Prior Art] FIG. 6 is a longitudinal sectional view for explaining an example of a conventional low tank.
FIG. 7 is a vertical sectional view of the operation handle. In FIG. 6, an outlet 12 is provided on the bottom surface of the raw tank body 10, and an outlet member 14 is fixed by a nut 14a. Reference numeral 16 indicates a valve seat provided on the upper end portion of the outlet member 14, and a float valve 18 can be seated. Reference numeral 20 is an overflow pipe, and 22 is a water supply pipe. A water supply valve 26 that is opened and closed by a float 24 is provided at the upper end of the water supply pipe 22.

The upper surface of the low tank body 10 is covered with a lid 28, and an operation handle 30 is attached to the lid 28. The float valve 18 includes the operating handle 30 and the chain 32.
Are connected by. Reference numeral 34 indicates a stopper for preventing the float valve from rising.

As shown in FIG. 7, the operation handle 30 is screwed to a pedestal portion 36 that covers the upper surface of the lid 28, a cylindrical portion 36a that extends downward from the center of the lower surface of the pedestal portion 36, and the cylindrical portion 36a. A nut 3 for fixing the operation handle 30 to the lid 28 by sandwiching the lid 28 with the pedestal portion 36.
8, a shaft 40 inserted into the cylindrical portion 36a, a knob 42 to which the upper end of the shaft 40 is screwed, a hook 44, and the like. The chain 32 has this hook 44
Is hung on. In the low tank shown in FIGS. 6 and 7, when the knob 42 is pinched and pulled up, the float valve 18 is pulled up and the water in the low tank body 10 is supplied to the toilet bowl through the outlet member 14. When the water level in the low tank decreases and approaches the valve seat 16, the float valve 18 also gradually descends, and then the float valve 18 is seated on the valve seat 16 to stop water.

[Problems to be Solved by the Invention] In the conventional low tank, when the water level in the low tank is lowered to the water level shown by A in FIG. 6, the float valve 1
8 is seated on the valve seat 16 and the water is stopped. Therefore, there is much residual water in the raw tank. That is, the water between the water level A and the water level B in FIG. 6 (this water level B corresponds to the upper surface level of the valve seat 16) is not supplied to the toilet even though it is above the valve seat 16. Become.

Since there is a large amount of residual water, it is necessary to increase the capacity of the conventional low tank.

[Means for Solving the Problems] In the low tank of the present invention, a float valve can be seated on an outflow valve seat provided at the bottom, and an operation handle for pulling up the float valve is provided.
A slow-moving mechanism for slowing the operation of the operating handle in the float valve seating direction is provided.

The operating handle of the present invention is provided with a mechanism for slowing the operation in the seating direction of the float valve.

[Operation] In the low tank of the present invention, when the float valve is pulled up by the operation handle, water flows out toward the toilet bowl. When the operation handle is released, the water level in the low tank drops and
The operating handle slowly returns in the direction in which the float valve is seated. In the present invention, the slowing mechanism is set so that the returning speed becomes smaller than the descending speed of the water level in the low tank, and the outflow continues until the water level in the low tank reaches the valve seat. . Therefore, the residual water in the low tank becomes small, and it is possible to supply the same amount of water to the toilet as in the conventional case even if the volume of the low tank is reduced.

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

FIG. 1 is a vertical sectional view of a raw tank according to an embodiment of the present invention,
FIG. 2 is a vertical sectional view of the operating handle, and FIG. 3 is an enlarged sectional view of a main part of the operating handle.

In the present embodiment, the cylindrical portion 36a of the operation handle 30
Has a cylinder hole 46 therein. Further, the shaft 40 is provided with a piston portion 48 which is fitted in the cylinder hole 46 in the middle thereof. The piston portion 48 is provided with small holes 54 and 56 for communicating the upper chamber 50 and the lower chamber 52 in the cylinder hole 46. The small hole 54 is an enlarged hole 58 which is enlarged from the middle thereof, and a boundary portion between the small hole 54 and the enlarged hole 58 is a seat portion 60.
Has become. A ball 62 seated on the seat 60 is loaded in the enlarged hole 58, and a spring 64
As a result, the ball 62 is urged in the direction of seating on the seat portion 60. Reference numeral 65 is a ring locked to the inner peripheral surface of the enlarged hole 58 and supports one end of the spring 64.

Reference numeral 66 is an O-ring, which is mounted in a groove 68 formed in the outer peripheral surface of the piston portion 48.

The cylinder hole 46 is closed by a cap 70, and the shaft 40 is inserted through a center hole 72 of the cap. Reference numeral 74 indicates an O-ring provided on the inner peripheral surface of the center hole 72. Reference numeral 76 indicates a spring that urges the piston portion 48 downward.

Other symbols in FIGS. 1 to 3 indicate the same parts as in FIGS.

In the low tank and the operation handle configured as described above, when the knob 42 is pulled up, the float valve 18 is pulled up through the chain 32, and the water starts to flow out from the inside of the tank toward the toilet bowl. Then, when the water level in the low tank drops, the float valve 18 also tries to descend accordingly. However, in the operation handle 30, the chamber 5
0 and the chamber 52 are communicated with each other only by a small hole 56 having a small diameter, and the piston portion 48 cannot move rapidly. That is, the piston portion 48 and the shaft 40 integrated with the piston portion descend very slowly. Therefore,
The float valve 18, which is connected to the shaft 40 via the chain 32, will also descend at a speed that is less than the descending speed of the water level in the raw tank. As a result, the water in the raw tank flows out until it reaches the upper surface water level B of the valve seat 16. Therefore, the amount of residual water in the raw tank is extremely small, and it is possible to supply the same amount of water to the toilet as in the conventional case even if the volume of the raw tank is reduced.

In the operation handle 30 described above, when the knob 42 is gripped and pulled up, the ball 62 is moved by the seat portion 6.
Move away from zero. Therefore, the air flows from the chamber 50 toward the chamber 52 through both the small holes 54 and 56, so that the knob 42 can be quickly pulled up with a small force.

Although air is contained in the cylinder 46 in the above embodiment, the cylinder hole 46 may be filled with a liquid such as water or a viscous material such as grease in the present invention. In this case, an O-ring is provided on the inner peripheral surface of the pedestal portion 36 to prevent liquid and the like from leaking.

FIG. 4 is a vertical cross-sectional view showing a structure of a piston portion used in an operation handle according to another embodiment of the present invention. In the present embodiment, a disk-shaped valve body 82 is installed in the enlarged hole 58 instead of the ball 62. A small hole 84 is formed in the valve body 82. Reference numeral 86 is a seat member fixed to the valve body 82, 88 is a seat portion on which the seat member 86 is seated, and the seat portion 88 is provided so as to project downward from the opening edge portion of the opening 55. In this embodiment, the opening 55 has a larger diameter than the small hole 54 shown in FIG.

In the operation handle having the configuration shown in FIG. 4, the shaft 40
When pulling up, the seat member 86 (valve body 82) separates from the seat portion 88, and the fluid in the chamber 50 quickly flows toward the chamber 52 through the opening 55. When the shaft 40 descends, a small amount of fluid flows from the chamber 52 toward the chamber 50 through the small hole 84.

Even if the operation handle of FIG. 4 is used, the residual water in the raw tank can be made extremely small.

In the above embodiment, the spring 76 is interposed in the cylinder hole 46, but in the present invention, the spring 76 is omitted as shown in FIG. 5, and the shaft 40 and the chain 32 are omitted.
Alternatively, the shaft 40 may be lowered only by the weight of the float valve 18.

[Effects] As described above, according to the low tank and the operation handle of the present invention, the residual water in the low tank can be made extremely small, so that the same amount of water as the conventional one can be supplied to the toilet even if the volume of the low tank is reduced. Made possible.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a raw tank according to an embodiment of the present invention,
2 is a longitudinal sectional view of the operating handle, and FIG. 3 is an enlarged view of a main part of FIG. FIG. 4 is an enlarged sectional view of a main part of another operating handle, and FIG. 5 is a vertical sectional view of another operating handle. FIG. 6 is a longitudinal sectional view of a low tank according to a conventional example, FIG.
The figure is a longitudinal sectional view of a conventional operation handle. 10 ... Low tank main body, 12 ... Outflow port, 16 ... Valve seat, 18 ... Float valve, 30 ... Operation handle, 46 ... Cylinder hole, 48 ... Piston part, 54, 56 ... Small hole, 62 …… Ball.

Claims (2)

[Scope of utility model registration request] 1. In a low tank in which a float valve can be seated on an outflow valve seat provided at the bottom and an operation handle for pulling up the float valve is provided, the operation of the operation handle in the float valve seating direction is described. A low tank that is equipped with a slow-moving mechanism for slow-moving. 2. An operating handle for a low tank, which is mounted on a low tank and is provided with a slowing mechanism for slowing down an operation in the seating direction of the float valve in the operating handle for pulling up the float valve.