Central force balanced drainage valve lifting mechanism

Abstract

The invention discloses a central force balanced drainage valve lifting mechanism. The central force balanced drainage valve lifting mechanism is arranged in a drainage valve, and the drainage valve further comprises a button assembly, the lifting mechanism, a floating cylinder assembly, a sealing disc assembly and a base assembly. The floating cylinder assembly is installed on the base assembly,and the button assembly, the lifting mechanism and the sealing disc assembly are installed in the floating cylinder assembly in sequence and cooperatively linked. The lifting mechanism comprises a first balance arm, a second balance arm, a connecting shaft, a third balance arm, a fourth balance arm and a lifting rod, wherein the middle A of the first balance arm rotationally cooperates with the head D of the second balance arm, the tail portion B of the first balance arm rotationally cooperates with the head F of the third balance arm, the tail portion E of the second balance arm rotationallycooperates with the head H of the fourth balance arm, the tail portion K of the fourth balance arm rotationally cooperates with the tail portion G of the third balance arm and rotationally cooperateswith the head of the lifting rod, the rotational cooperation axes are parallel, and the four-bar linkage lifting mechanism is formed. The structure is stable, and the force is balanced.

Description

technical field [0001] The invention relates to a lifting mechanism, in particular to a drain valve lifting mechanism with balanced central force. Background technique [0002] In the drain valve of the toilet tank, the pressing rod and the lifting rod of the button are located near the central axis of the drain valve. In order to turn the downward force of the button into an upward pulling force, a lever is arranged under the button, and a cross bar is arranged on the top of the lifting rod. The movable connection of the crossbar plays the role of pulling up the lifting rod, which makes room in space, but increases the lateral friction force, causing the button to be pulled and jammed, and the friction force increases after long-term use, which is easy to be stuck die. Contents of the invention [0003] The technical problem to be solved by the present invention aims at the above-mentioned deficiencies in the prior art. Provided is a drain valve lifting mechanism with c...

AI Technical Summary

Problems solved by technology

[0002] In the drain valve of the toilet tank, the pressing rod and the lifting rod of the button are located near the central axis of the drain valve. In order to turn the downward force of the button into an upward pulling force, a lever is arranged under the button, and a cross bar is arranged on the top of the lifting rod. The movable connection of the crossbar plays the role of pulling up the lifting rod, which makes room in space, but increases the lateral friction force, causing the button to be pulled and jammed, and the friction force increases after long-term use, which is easy to be stuck die

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