JPH09166239A - Float valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessity for a stopper of an overflow pipe and easily safely insert and fit a guide rod into a guide part. SOLUTION: A guide rod 25 provided in a float valve element 23 is vertically slidably inserted in a guide hole 30 provided in a guide part 29 of a float valve seat 22, a rod-shaped part 25a of the guide rod 25 is formed in a polygonal columnar shape, also a coming-off preventing hook 25b is provided in a lower end of the rod, the guide part 29 is formed with a guide surface 30a of a guide hole 30 slide guiding the rod-shaped part 25a incapable of rotating, also a notched part 29a inserting the coming-off preventing hook 25b is provided, after the coming-off preventing hook 25b is inserted in the notched part 29a from the upward of the guide part 29, the rod-shaped part 25a is forcedly rotated up to a position incapable of rotating. In this way, the coming-off preventing hook 25b is locked to a lower end opening edge 29b of the guide hole 30, so as to regulate a floating upper limit of the float valve element 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a float valve incorporated in a toilet flush water tank or the like.

[0002]

2. Description of the Related Art Conventionally, a float valve 1 is shown in FIG.
As shown in (B), the float valve seat 2 and the float valve body 3 seated on the float valve seat 2 are provided. The float valve body 3 has a round rod-shaped guide rod 5 suspended from a spherical float body 4, and a chain 6 is connected to the upper portion thereof. The float valve seat 2 has a valve opening 7 on which the float valve body 3 is seated,
A water passage 8 leading to the valve opening 7, a guide portion 9 for guiding the vertical movement of the guide rod 5, and an overflow pipe 1 leading to the water passage 8.
1 is provided. The guide portion 9 has a round guide hole 10 through which the guide rod 5 passes. Overflow pipe 1
1, a stopper 12 that regulates the upper floating position of the float valve body 3 is joined to a predetermined position.

When the float valve body 3 is lifted by a predetermined dimension through the chain 6 by operating an operation handle (not shown), the float valve body 3 separates from the valve opening 7 and floats to a position where it is held by the stopper 12. When the float valve body 3 floats up, the water in the tank (not shown) flows through the valve port 7 and the water passage 8
Is discharged from the tank to the outside of the tank. Then, the float valve body 3
As the water level in the tank lowers, it descends and eventually sits on the valve port 7.

[0004]

The guide rod 5 of the float valve body 3 has such a length that it will not come out of the guide portion 9 even if it floats up to the upper limit position held by the stopper 12. Therefore, when assembling the float valve 1, when assembling the float valve body 3 to the float valve seat 2, the long guide rod 5 is forced so as not to buffer the stopper 12 and the float body 4 which are joined to the overflow pipe 11 in advance. It is necessary to insert the lower end of the guide rod 5 into the guide hole 10 of the guide portion 9 while bending the guide rod 5. However, the excessive bending of the guide rod 5 may break the guide rod 5. Furthermore, when maintenance is performed by an unfamiliar person, the guide bar 5 when broken
The warp of the can cause injury to the hand.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a float valve which does not require a stopper for an overflow pipe and which can easily and safely insert a guide rod into a guide portion.

[0006]

The gist of the present invention according to claim 1 is that a guide rod provided in a float valve body is vertically slidably inserted into a guide hole provided in a guide portion of a float valve seat. In a float valve in which a float valve element is seated on a valve seat, the guide rod has a rod-shaped portion formed in a polygonal column shape and a stopper hook is provided at the lower end thereof, and the guide portion slides the rod-shaped portion so as not to rotate. Forming a guide surface of the guide hole for guiding and providing a notch portion through which the retaining hook is inserted,
After the retaining hook is inserted into the notch from above the guide portion, the rod is forcibly rotated to a non-rotatable position to lock the retaining hook at the lower opening edge of the guide hole. The float valve is characterized in that the floating upper limit of the float valve body is regulated.
In the present invention, since the float valve body moves up and down from the position where it is seated on the float valve seat to the position where the retaining hook of the guide rod collides with the guide portion, the stopper that has been conventionally required is no longer necessary. Further, when assembling the float valve body to the float valve seat, after inserting the retaining hook into the notch from above the guide, it is only necessary to forcibly rotate the rod-shaped portion to a position where it cannot rotate. Can be attached to the guide hole without bending.

The gist of the second aspect of the present invention is that a guide rod provided in the float valve body is vertically slidably inserted into a guide hole provided in a guide portion of the float valve seat, and the float valve body is provided in the float valve seat. In the float valve designed to be seated on the guide rod, the guide rod is provided with a retaining hook at the lower end thereof, and the retaining hook is forcedly inserted into the guide hole from above the guide portion to force the lower end opening edge of the guide hole. The float valve is characterized in that the upper limit of the float of the float valve body is regulated by locking the retaining hook. In the present invention, since the float valve body moves up and down from the position where it is seated on the float valve seat to the position where the retaining hook of the guide rod collides with the guide portion, the stopper that has been conventionally required is no longer necessary. Furthermore, when assembling the float valve body to the float valve seat, it suffices to insert the retaining hook by force from above the guide portion into the guide hole, and the guide rod can be inserted into the guide hole without bending.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A float valve according to the present invention (hereinafter referred to as "the float valve of the present invention") will be described below based on an embodiment shown in the drawings.

(First Embodiment) FIGS. 1 and 2 show a first embodiment of the float valve according to the present invention.
2 is a partially sectional front view showing a state where the float valve body 23 is seated on the float valve seat 22, and FIG. 2 is an enlarged sectional view of the float valve seat 22 on the float valve seat 22 and a guide rod 25 of the float valve body 23 in FIG. 4A is a plan view of the float valve seat 22, FIG. 7A shows only the guide portion 29 of the float valve seat 22, FIG. 7B shows only the guide rod 25 of the float valve body 23, and FIG. 2D shows a state in which the retaining hooks 25b, 25b of the float valve body 23 are inserted through the notches 29a, 29a, and (D) shows a state in which the rod portion 25a of the float valve body 23 is forcibly rotated to a non-rotatable position. (E) shows only the guide part 29 of the float valve seat 22 of another aspect.

The float valve 2 of the present invention in this embodiment
The improvement of 1 is the guide rod 25 of the float valve body 23 and the guide portion 29 of the float valve seat 22. The rod-shaped portion 25a of the guide rod 25 is formed into a columnar shape having a square cross section, and at the lower end of the guide rod 25. Provided with retaining hooks 25b, 25b,
Guide surfaces 30a, 30a for non-rotatably guiding the rod-shaped portion 25a are formed in the guide holes 30 of the guide portion 29, and notch portions 29a, 29a through which the retaining hooks 25b, 25b are inserted are provided in the guide portion 29. Notch 2 from above 29
Insert the retaining hooks 25b and 25b into 9a and 29a (see FIG. 2).
(See (C)), the rod 25a is forcibly rotated to a non-rotatable position (see (D) in the figure), so that the retaining hooks 25b and 25b are attached to the lower end opening edges 29b and 29b of the guide hole 30. That is, the floating upper limit of the float valve body 23 is regulated by locking the.

In the guide hole 30 of the guide portion 29, the length B1 of the perpendicular line drawn from the hole center line A1 (see FIG. 9A) to the guide surface 30a is the bar center line in the bar portion 25a of the guide rod 25. It is formed so that it is shorter than the length D1 from C1 to the chamfered corner, and is under normal use (see FIG. 3D).
The guide surface 30a slides and guides the rod portion 25a of the guide rod 25 so as not to rotate. Guide 2
9 indicates that when the rod-shaped portion 25a inserted into the guide hole 30 is forcibly rotated from the state shown in FIG. 7C to the state shown in FIG. 9D, the length B1 of the perpendicular line of the guide hole 30 increases. It is formed of a synthetic resin material or the like having appropriate elasticity so as to cause elastic deformation. The guide unit 29 is
As shown in FIG. 6E, a slit 29c may be provided on the thin portion to facilitate deformation, thereby enabling smooth forced rotation of the rod-shaped portion 25a.

In the float valve 21 of the present embodiment, each of the retaining hooks 25b of the guide rod 25 is guided to the guide portion 29 from the position where the float valve body 23 is seated on the float valve seat 22 (see FIG. 1).
Since the guide bar 25 is guided by the guide hole 30 and moves up and down to the floating upper limit position where it collides with the lower end opening edge 29b of
It is not necessary to provide a stopper on the overflow pipe 11. In the present embodiment, when the float valve body 23 is assembled to the float valve seat 22 to assemble the float valve 21, the retaining hooks 25b and 25b of the guide rod 25 are inserted into the notches 29a and 29a from above the guide portion 29 ( Figure 2 (C)
(Refer to FIG. 3D), the rod-shaped portion 25a may be forcibly rotated to a position where it cannot rotate (see FIG. 2D).
The guide rod 25 can be quickly and safely inserted into the guide hole 30 without bending.

(Second Embodiment) FIG. 3 shows a second embodiment of the float valve according to the present invention, in which (A) shows only the guide portion 29 of the float valve seat 22 and (B). ) Shows only the guide rod 25 of the float valve body 23, (C) shows a state in which the respective retaining hooks 25b of the float valve body 23 are inserted through the notches 29a from above the guide portion 29, and (D) shows The state which forcedly rotated the rod-shaped part 25a of the float valve body 23 to the position which cannot be rotated is shown.

The difference of the float valve of the present invention from the first embodiment is that the rod-shaped portion 25a of the guide rod 25 is formed in a columnar shape having a regular hexagonal cross section, and at the lower end of the guide rod 25, 3 is formed. Provided with individual retaining hooks 25b, the guide portion 2
The guide hole 30 of FIG. 9 is formed with three guide surfaces 30a for non-rotatably slidingly guiding the rod portion 25a, and the guide portion 29 is provided with three notches 29a through which the respective retaining hooks 25b are inserted. . The configuration other than this difference is substantially the same as that of the first embodiment.

In the guide hole 30 of the guide portion 29, the length B2 of the perpendicular line drawn from the hole center line A2 (see FIG. 9A) to the guide surface 30a is the bar center line of the bar-shaped portion 25a of the guide rod 25. It is formed so as to be shorter than the length D2 from C2 to the corner portion, and in a normal use state (see FIG. 7D),
The guide surface 3 is arranged so that the rod-shaped portion 25a of the guide rod 25 does not rotate.
The slide guide is set at 0a. The guide part 29 is
Elastic deformation in which the length B2 of the perpendicular line of the guide hole 30 increases when the rod-shaped portion 25a inserted into the guide hole 30 is forcibly rotated from the state of FIG. In order to cause the above-mentioned phenomenon, it is molded with a synthetic resin material or the like having an appropriate elasticity.

In the float valve of the present embodiment, each retaining hook 25b of the guide rod 25 collides with the lower end opening edge 29b of the guide portion 29 from the position where the float valve body 23 is seated on the float valve seat 22 (see FIG. 1). Guide bar 2 up to the floating upper limit position
Since 5 is guided by the guide hole 30 and moves up and down, it is not necessary to provide a stopper on the overflow pipe 11 (see FIG. 1). In the present embodiment, when the float valve body 23 is assembled to the float valve seat 22 to assemble the float valve 21, the retaining hooks 25b of the guide rod 25 are inserted into the notches 29a from above the guide portion 29 (see FIG. 3). (See (C))
After that, the rod-shaped portion 25a may be forcibly rotated to a non-rotatable position (see FIG. 11D), and the guide rod 25 can be quickly and safely inserted into the guide hole 30 without bending. .

(Third Embodiment) FIG. 4 shows a third embodiment of the float valve of the present invention, in which (A) shows only the guide portion 29 of the float valve seat 22, and (B). ) Shows only the guide rod 25 of the float valve body 23, (C) shows a state in which the respective retaining hooks 25b of the float valve body 23 are inserted through the notches 29a from above the guide portion 29, and (D) shows The state which forcedly rotated the rod-shaped part 25a of the float valve body 23 to the position which cannot be rotated is shown.

The float valve of the present invention in this embodiment is different from that of the first embodiment in that the rod-shaped portion 25a of the guide rod 25 is formed in a columnar shape having a regular octagonal cross-section, and the guide rod 25 has 4 Provided with individual retaining hooks 25b, the guide portion 2
The guide hole 30 of FIG. 9 is provided with four guide surfaces 30a for non-rotatably guiding the rod-shaped portion 25a, and the guide portion 29 is provided with four notches 29a through which the respective retaining hooks 25b are inserted. . The configuration other than this difference is substantially the same as that of the first embodiment.

In the guide hole 30 of the guide portion 29, the length B3 of the perpendicular line drawn from the hole center line A3 (see FIG. 9A) to the guide surface 30a is the bar center line of the bar-shaped portion 25a of the guide rod 25. It is formed to be shorter than the length D3 from C3 to the corner, and under normal use (see FIG. 3D),
The rod portion 25a of the guide rod 25 is slidably guided so as not to rotate. The guide portion 29 forcibly rotates the rod-shaped portion 25a inserted into the guide hole 30 from the state shown in FIG. 9C to the state shown in FIG. Is formed of a synthetic resin material or the like having an appropriate elasticity so as to cause elastic deformation to expand.

In the float valve of the present embodiment, each retaining hook 25b of the guide rod 25 collides with the lower opening edge 29b of the guide portion 29 from the position where the float valve body 23 is seated on the float valve seat 22 (see FIG. 1). Guide bar 2 up to the floating upper limit position
Since 5 is guided by the guide hole 30 and moves up and down, it is not necessary to provide a stopper on the overflow pipe 11 (see FIG. 1). In the present embodiment, when the float valve body 23 is assembled to the float valve seat 22 to assemble the float valve 21, the retaining hooks 25b of the guide rod 25 are inserted into the notches 29a from above the guide portion 29 (see FIG. 3). (See (C))
After that, the rod-shaped portion 25a may be forcibly rotated to a non-rotatable position (see FIG. 11D), and the guide rod 25 can be quickly and safely inserted into the guide hole 30 without bending. .

(Fourth Embodiment) FIG. 5 is an enlarged view of a main portion of a float valve according to a fourth embodiment of the present invention, in which a float valve element 33 is seated on a float valve seat 32. It is a front view of a state.

The float valve 3 of the present invention in the present embodiment
The improvement of No. 1 is that the retaining hooks 35b, 35b are provided at the lower end of the guide rod 35 of the float valve body 33, and the retaining hook 35 is provided in the guide hole 40 from above the guide portion 39 of the float valve seat 32.
b, 35b by forcefully inserting the guide hole 4
That is, the retaining hooks 35b and 35b are locked to the lower end opening edge 39b of 0 to regulate the floating upper limit of the float valve element 33.

The guide rod 35 has a rod-shaped portion 35a formed in a columnar shape having a circular cross section or a polygonal cross-section, and is provided with retaining hooks 35b, 35b at the lower end of the rod-shaped portion 35a. Guide bar 3
By providing the notch slit 35c at the lower end of 5, the elastic deformation for bringing the retaining hooks 35b, 35b closer to each other is facilitated, and the retaining hooks 35b, 35b can be easily inserted into the guide hole 40 by force fitting. I am doing it.

The float valve 31 of the present embodiment moves up and down from the position where it is seated on the float valve seat 32 to the floating upper limit position where the retaining hooks 35b, 35b of the guide rod 35 collide with the guide portion 39, so it is conventionally required. The stop stopper that was used is no longer necessary. Further, the float valve seat 32 is attached to the float valve seat 32.
When assembling 3, the retaining hooks 35b, 35b need only be forcibly inserted into the guide hole 40 from above the guide portion 39, and the guide hole 35 can be formed without bending the guide rod 35.
Can be attached to 0.

(Fifth Embodiment) FIG. 6 is an enlarged view of a main part of a fifth embodiment of the float valve according to the present invention, in which a float valve element 33 is seated on a float valve seat 32. It is a front view of a state.

The float valve 4 of the present invention in this embodiment
1 is different from the fourth embodiment (see FIG. 5) in that the slit 39c is provided in the guide portion 39 of the float valve seat 32 without providing the slit in the lower end of the guide rod 35, so that the guide hole 40 Of the guide portion 39
The retaining hooks 35b, 35b can be easily and forcefully inserted into the guide hole 40 from above. The configuration other than this difference is substantially the same as that of the fourth embodiment.

The float valve 51 of the present embodiment moves up and down from the position where it is seated on the float valve seat 32 to the floating upper limit position where the retaining hooks 35b, 35b of the guide rod 35 collide with the guide portion 39, so it is conventionally required. The stop stopper that was used is no longer necessary. Further, the float valve seat 32 is attached to the float valve seat 32.
When assembling 3, the retaining hooks 35b, 35b need only be forcibly inserted into the guide hole 40 from above the guide portion 39, and the guide hole 35 can be formed without bending the guide rod 35.
Can be attached to 0.

[0028]

As described in detail above, the float valve of the present invention is
Since no stopper is required, cost can be reduced and
It has an excellent effect that the guide rod can be easily inserted into the guide hole quickly and safely.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a float valve according to the present invention, and is a partially sectional front view showing a state where a float valve element is seated on a float valve seat.

2 is a plan view of the guide portion of the float valve seat and the guide rod of the float valve body, which is an enlarged cross section taken along the line E-I of FIG. 1, (A) shows only the guide portion of the float valve seat,
(B) shows only the guide rod of the float valve body, (C) shows a state in which the retaining hook of the float valve body is inserted from above the guide portion to the notch, and (D) shows the rod-shaped portion of the float valve body. Shows the state of forcibly rotating to the position where it cannot rotate,
(E) shows only the guide part of the float valve seat of another mode.

FIG. 3 is a plan view of a cross section of a guide portion of a float valve seat and a guide rod of a float valve body in a second embodiment of the float valve of the present invention, (A) showing a guide portion of the float valve seat. (B) shows only the guide rod of the float valve body, (C) shows a state in which the retaining hook of the float valve body is inserted into the notch from above the guide portion, and (D) shows the float valve. The state which forcedly rotated the rod-shaped part of a body to the position which cannot be rotated is shown.

FIG. 4 is a plan view of a cross section of a guide portion of a float valve seat and a guide rod of a float valve body in a third embodiment of the float valve of the present invention, (A) showing a guide portion of the float valve seat. (B) shows only the guide rod of the float valve body, (C) shows a state in which the retaining hook of the float valve body is inserted into the notch from above the guide portion, and (D) shows the float valve. The state which forcedly rotated the rod-shaped part of a body to the position which cannot be rotated is shown.

FIG. 5 is an enlarged view showing a main part of a float valve according to a fourth embodiment of the present invention, and is a front view of a state where a float valve element is seated on a float valve seat.

FIG. 6 is an enlarged view showing a main part of a float valve according to a fifth embodiment of the present invention, in which (A) is a front view of a state where the float valve body is seated on the float valve seat, (B). [Fig. 3] is a plan view of a cross section taken along the line Loro of (A).

7A and 7B are views showing a conventional float valve, in which FIG. 7A is a partially sectional front view, and FIG. 7B is an enlarged cross-sectional plan view taken along the line Ha-Ha of FIG.

[Explanation of symbols]

 22 (32) ... Float valve seat 23 (33) ... Float valve body 25 (35) ... Guide rod 25a (35a) ... Rod-shaped part 25b (35b) ... Pull-out hook 29 (39) ... Guide part 29a ... Notch part 29b ( 39b) ... Lower end opening edge 30 (40) ... Guide hole 30a ... Guide surface

Claims (2)

[Claims] 1. A float valve in which a guide rod provided in a float valve body is vertically slidably inserted into a guide hole provided in a guide portion of the float valve seat so that the float valve body is seated in the float valve seat. In the above-mentioned, the guide bar has a rod-shaped portion formed in a polygonal column shape, and a retaining hook is provided at a lower end thereof, and the guide portion forms a guide surface of the guide hole for slidingly and non-rotatably guiding the rod-shaped portion and A lower end of the guide hole is formed by providing a notch portion through which the hook is inserted, inserting the retaining hook into the notch portion from above the guide portion, and forcibly rotating the rod-shaped portion to a non-rotatable position. A float valve, wherein the retaining hook is locked to an opening edge to regulate an upper limit of floating of a float valve body. 2. A float valve in which a guide rod provided in a float valve body is vertically slidably inserted into a guide hole provided in a guide portion of the float valve seat so that the float valve body is seated in the float valve seat. The guide rod is provided with a retaining hook at the lower end thereof, and the retaining hook is forcedly inserted into the guide hole from above the guide portion so that the retaining hook is locked at the lower end opening edge of the guide hole. The float valve is characterized in that the floating upper limit of the float valve body is regulated.