Anti-high torque handling three-pole lock

Abstract

The invention relates to a lockset technique, in particular to an anti-high torque handling three-pole lock. The three-pole lock comprises an external handling component, an internal handling component, a transmission mechanism and a safety device, wherein the transmission mechanism comprises a direction button, a marble seat, a transmission square pipe and a control bar; one side of the direction button is provided with a straight-line key which is connected with a straight-line groove in a locking head, and the other side of the direction button is provided with a 90-degree rotating groove which is connected with one end of the control bar; the other end of the control bar is connected with one end of a hand-twisted bar; and the safety device comprises an open groove formed on an external handling sleeve, a marble, a cam arranged on the marble seat and a marble cavity formed on an external handling sleeve mounting hole which is vertical to the central line of a lock hole. The invention aims to design the anti-high torque handling three-pole lock capable of resisting the damage of a high torque. Compared with the prior art, the anti-high torque handling three-pole lock has the advantages of firm and smooth safety, remarkable locking handfeel, high anti-theft performance and the like.

Description

technical field [0001] The invention relates to lock technology, in particular to a three-bar lock with strong torque-resistant handle. Background technique [0002] The patent literature database disclosed by the State Intellectual Property Office disclosed a patent No. ZL 02226410.8 "a transmission mechanism and handle for a three-bar lock" on March 21, 2002. This patent includes an outer handle part and an inner handle. handle parts, lock cylinder and safety device, wherein the safety device consists of a safety cam connected to the lock cylinder, a safety ring, a switch tube spring, a safety column groove and Zigzag lock slot and other components. When opening the door, insert the key into the lock cylinder and rotate clockwise 90°, the lock cylinder drives the safety cam to rotate 90°, and the safety cam drives the safety ring to move forward by 5 mm, and the safety ring is disengaged The glyph lock groove enters the safety column groove, the safety device is taken ...

AI Technical Summary

Problems solved by technology

Although this patented structure is very reliable in operation, it has the following disadvantages: 1, because the safety device adopts the safety ring and The glyph lock groove cooperates to lock the insurance, and its ability to resist strong torque is poor. As long as the handle is twisted with the help of a wrench or other tools, the insurance ring and the safety ring in the safety device can be locked. The zigzag lock groove is damaged, so that the safety device loses its safety function, and the handle three-bar lock loses its proper function

2. When the three-bar handle lock is used to lock the door, there is no sense of lock. After the user locks the door, they often have to turn the handle with their hands, which makes people feel unreliable.

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