JPH0245570Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention adjusts the water-stop height position of a floating ball in a ball tap that opens and closes a valve by expanding the buoyancy of the floating ball using the lever principle. Regarding improvements to the mechanism.

[Conventional technology]

Conventionally, a ball tap has a main body 1 with a built-in valve 2, a floating ball support rod 4 which is pivotably supported 3 on the main body 1 and can freely swing up and down, and a pivot 5 on the main body 1, as shown in FIGS. 4 and 5. A lever 6 that can swing up and down to open and close the valve.
And, near the swinging end of the lever 6, there are upper and lower clamp pieces 6a,
6b, the adjustment nut 8 inserted into the space 7, and the adjustment nut 8 that passes through the through holes 6c and 6d drilled in the upper and lower clamp pieces 6a and 6b.
A connecting rod 9 which has a bolt portion 9a that is screwed into the floating ball support rod 4 and has a lower end ring portion 9b connected to the floating ball support rod 4.
and a lock nut 10 screwed onto the bolt portion 9a of the connecting rod 9.

To adjust the water stop height position of the float 11 attached to the float support rod 4, loosen the lock nut 10, rotate the adjustment nut 8, and connect the lower end link portion 9b of the connecting rod 9 to the screwing point of the adjustment nut. After adjusting the distance L to a desired value, the lock nut 10 is tightened.

FIG. 6 shows another embodiment of the conventional ball tap, in which a disc spring 21 is interposed between the lock nut 10 and the clamp piece 6a to prevent the lock nut 10 from loosening.

[Problem that the invention attempts to solve]

However, the conventional ball tap has an adjustment nut of 8
Since the rotation of the lock nut 10 is prevented by tightening the lock nut 10, the following drawbacks arise.

(a) The lock nut 10 may loosen due to the accumulation of vibrations that occur during long-term use. As the lock nut 10 loosens, the adjustment nut 8 may spin idly during use, causing the water stop height position of the float 11 to fluctuate, and in the worst case, opening and closing the valve 2 becomes impossible. There is.

(b) The lever 6 and the floating ball support rod 4 can swing in the left and right directions as shown in Fig. 5 by loosely fitting the pivots 3 and 5 so that the swing movement is smooth. It's like this. However, floating ball support rod 4
When the lock nut 10 (see Fig. 4) is tightened while keeping it in the state shown by the two-dot chain line A in the same figure, the floating ball support rod 4, which was receiving the buoyancy of the floating ball 11, moves as indicated by the two-dot chain line in the figure. As it oscillates laterally to state B, a large rotational moment may be applied to the lower end link portion 9b of the connecting rod 9 in the direction of arrow C, causing the lock nut 10 to loosen.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a ball tap that prevents the adjustment nut from idling without using a lock nut.

[Means for solving problems]

The gist of the present invention is a floating ball support rod that is pivotally supported on the main body and can freely swing up and down, a lever that is pivoted on the main body and that can swing up and down for valve opening/closing operation, and a part near the swinging end of the lever. It has a space formed by being sandwiched between the upper and lower pieces, an adjustment nut inserted into the space, a bolt portion that passes through a through hole drilled in the upper and lower pieces and is screwed into the adjustment nut, and the lower end is formed by the floating part. In a ball tap consisting of a connecting rod connected to a ball support rod, a locking portion is locked on the outer surface of the adjustment nut, and the rotation is performed in the gap formed by the locking portion and the edge forming the space. By engaging the blocking piece, the adjustment nut is prevented from slipping.

[Effect]

Since the rotation prevention piece is fixed to the gap formed by the locking part of the adjustment nut and the edge forming the adjustment nut insertion space, the adjustment nut will not rotate even if it is subjected to some external force. It is prevented from idling because it is blocked by a rotation prevention piece.

[Explanation of Examples]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The ball tap according to the present invention will be explained below based on embodiments shown in the drawings.

(First Embodiment) FIGS. 1 and 2 show essential parts of the first embodiment. At the ball tap 12, the main body 1
A floating ball support rod 4 is pivotably supported on the main body 1 and is pivotable in the vertical direction. The adjustment nut 13 passes through the space 7 formed by being sandwiched between the clamp pieces 6a and 6b, the adjustment nut 13 inserted into the space 7, and the through holes 6c and 6d drilled in the upper and lower clamp pieces 6a and 6b, and into the adjustment nut 13. It has a bolt part 9a to be screwed together, and a lower end ring part 9b is attached to the floating ball support rod 4.
The connecting rod 9 connected to the ball tap is the same as the conventional ball tap described above.

The improvements made in this embodiment include the adjustment nut 1.
The rotation prevention piece 14 is engaged in the gap 20 formed by the locking part 13a of the third embodiment and the edge 7a forming the space 7, thereby preventing the adjustment nut 13 from idling. The adjustment nut 13 is made of a hexagonal nut, a square nut, or the like, and has a flat locking portion 13a formed on its outer surface. The space 7 formed in the screw 6 is sized to allow the adjustment nut 13 to be rotated. The rotation prevention piece 14 is made of synthetic resin or stainless steel, and has an elastic locking part 14b folded back at the tip of the base 14a.
A retaining portion 14c is formed by wrapping around the rear end of a. The rotation prevention piece 14 is moved from the state shown by the two-dot chain line in the figure to the elastic locking part 14 at the tip in the gap 20.
When b is pushed in, the elastic locking portion 14b is attached to the base portion 14a.
After passing through the gap 20 in an elastically deformed state in which it is folded upward, it elastically returns to its original state and is engaged with the clamp piece 6 as shown by the solid line in the figure. Even if the adjusting nut 13 tries to spin idly due to some external force, the long diameter portion 13b
(the corner of the hexagonal nut) is the base 1 of the rotation prevention piece 14
4a, idling is prevented. In addition, to readjust the water stop height position of the floating ball 11,
The elastic locking portion 14b of the rotation prevention piece 14 is connected to the base 14a.
After the rotation prevention piece 14 is forcibly folded upward, the rotation prevention piece 14 is pulled out from the gap 20, and the rotation of the adjustment nut 13 is adjusted, the rotation prevention piece 14 is engaged again.

(Second Embodiment) FIG. 3 shows a second embodiment, which differs from the first embodiment in the shape of the rotation prevention piece 15.
The rotation prevention piece 15 has elastic locking portions 15b, 15b protruding from a retaining portion 15c and facing each other.
The rotation prevention piece 15 is moved from the state shown by the two-dot chain line in the figure to the elastic locking part 15 in the gap 20 (see FIG. 2).
b, 15b, the elastic locking portions 15b, 1
After 5b passes through the gap 20 in a state of being elastically deformed inward, it returns elastically and is engaged with the lever 6 as shown by the solid line in the figure. Even if the adjustment nut 13 attempts to idle due to some external force, the long diameter portion 13
b represents the elastic locking portions 15b, 15b of the rotation prevention piece 15;
Since it comes into contact with the wheel, idling is prevented.

(Other Examples) The elastic locking portion 14b of the rotation prevention piece 14 in the first embodiment and the elastic locking portion 15b in the second embodiment are each provided with elasticity to facilitate attachment and detachment. It is not limited. That is, although not shown, the rotation prevention piece is a split pin,
The insertion portion of the rotation prevention piece is inserted into the gap 20 (see Fig. 2), and the tip and/or rear end protruding from the gap 20 is bent to plastically deform and engage. Of course, it is also possible to form a stop.

[Effect of idea]

As detailed above, in the ball tap according to the present invention, the rotation preventing piece is engaged in the gap formed by the locking part of the adjustment nut and the edge forming the space for inserting the adjustment nut. Even if there is vertical vibration or side-to-side vibration of the float support rod, the adjustment nut will not spin idly, and the water stop position of the height-adjusted float will always remain constant, ensuring stable water stop control. It has practical effects.

[Brief explanation of drawings]

1 to 3 show embodiments of the ball tap according to the present invention, in which FIG. 1 is a perspective view showing the main parts of the assembled state in the first embodiment, and
The figure is a plan view of the main part taken along the - line in Fig. 1, Fig. 3 is a front view showing the main part of the second embodiment, and Fig. 4 is a partially broken side view showing the conventional ball tap.
FIG. 5 is a bottom view of the same as the above, and FIG. 6 is a partially cutaway side view showing the main parts of another embodiment of the conventional ball tap. 4... floating ball support rod, 6... lever, 6a, 6b...
...Strap piece, 7...Space, 9...Connection rod, 13...Adjustment nut, 13a...Engaging portion, 14, 15...Rotation blocking piece.

Claims (1)

[Scope of utility model registration request] A floating ball support rod that is pivoted to the main body and can swing up and down,
a vertically swingable screw for opening and closing the valve, which is pivotally supported on the main body; a space formed between upper and lower clamp pieces near the swinging end of the screw; and an adjustment nut inserted into the space; A ball tap that has a bolt part that passes through a through hole drilled in the upper and lower clamp pieces and is screwed into an adjustment nut, and a connecting rod whose lower end is connected to the floating ball support rod, and a bolt that engages with the outer surface of the adjustment nut. A ball tap characterized in that a stopper is formed, and a rotation preventing piece is engaged in a gap formed by the stopper and an edge forming the space, thereby preventing the adjustment nut from idling.