Linkage device of heaven and earth poles of automatic lock

Abstract

The invention provides a linkage device of heaven and earth poles of an automatic lock and belongs to the technical field of hardware door lock accessories. The problems that an existing heaven and earth hook is hard to drive, so that unlocking and locking are strenuous are solved. The linkage device comprises two sets of heaven and earth pole devices. The heaven and earth pole devices each comprise one heaven and earth pole, a rotary arm and a chute formed in a spring bolt plate. The two chutes are arranged in an inverted-V shape, pin holes are formed in the heaven and earth poles, the rotary arms are rotationally connected with a lock box through the rotary shafts, pin shafts are arranged on the rotary arms, the pin shafts are simultaneously clamped into the corresponding chutes and pin holes and can move back and forth along the chutes along with motion of the spring bolt plates, the pin shafts drive the heaven and earth poles to move and drive the rotary arms to rotate, and the rotary arms in the two sets of heaven and earth pole devices achieve synchronous identical and reverse rotation through a linkage mechanism. The gravity of the heaven and earth pole located on the lower portion can be converted into thrust for upward motion of the heaven and earth pole on the upper portion, driving force needing to be provided for motion of the spring bolt plates becomes smaller accordingly, and more labor is saved during closing of the automatic lock.

Description

technical field [0001] The invention belongs to the technical field of hardware door lock accessories, and relates to a sky-earth lever for an automatic lock, in particular to a linkage device for a sky-earth lever for an automatic lock. Background technique [0002] The door locks in the prior art (especially automatic locks with good anti-theft performance) are usually equipped with a sky-earth rod (heaven-earth hook), and the door is locked up and down by the sky-earth rod to increase the anti-theft performance of the door lock. [0003] Chinese patent document CN201367776Y discloses a cooperating structure between the lock hook and the lock bolt of the heaven and earth lock, including the oblique bolt, the main bolt, the safety bolt, and the heaven and earth hook. There are two parallel transverse grooves and two parallel longitudinal grooves on the lock box. Groove, the deadbolt plate of main dead bolt has two inserting posts, and this inserting post inserts in sliding ...

AI Technical Summary

Problems solved by technology

The sky-earth hook slides along the transverse groove, and the post slides along the longitudinal groove. When sliding, the sky-earth hook is stretched out and retracted by using the eight-shaped sliding groove. However, there are still the following problems: the installation and processing of post, longitudinal groove, sliding groove and transverse groove are more difficult; the structural design is not reasonable enough, and the entire heaven and earth lock hook occupies a large amount of design space, and is arranged in the center of the lock body, which is different from the The lock tongues are stacked together, and the structure is messy and disorderly; in addition, when installing the door lock, the two-day ground hook is located in the vertical direction, and when the bottom hook is extended, its gravity promotes the extension of the sky-ground hook. The sky-earth hook at the top has to overcome its own gravity when it is extended. In this way, the force provided by the outside world is different for the two-day extension of the earth hook. In view of the above situation, it is necessary to provide a larger force to drive the movement of the deadbolt plate so that the two-day ground hook can be stretched out smoothly, which will eventually lead to more laborious locking of the door lock

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