Silent buffer spring bolt structure

Abstract

The invention relates to a lock body component of a door lock, and in particular provides a silent buffer spring bolt structure. The technical scheme adopted by the invention is as follows: a liner plate, a latch bolt, a bottom box, a sliding block, a dial peach and a buffer block are arranged on the silent buffer spring bolt structure; a rubber gasket is fixedly embedded in front of a tail pin at the tail end of the latch bolt; the latch bolt extends into the bottom box, and the rear part of the latch bolt presses against a reset spring; a buffer cavity is formed in the middle of the bottom box and the buffer block can be embedded in the cavity; a box cover is buckled with the bottom box, the sliding block is embedded in the bottom box, an embedding cavity is formed on the inner side of the front end of the bottom box to embed the tail pin and the rubber gasket at the tail end of the latch bolt, a guide column is arranged on one side of the outer wall at the front end of the bottom box and is embedded with a guide straight groove in the middle of the box cover, and a buffer column is arranged on the other side of the outer wall to match with the buffer block embedded in the bottom box and is embedded into a buffer bent groove formed in the buffer block; and when the latch bolt returns, the latch bolt is influenced by the resistance of the buffer bent groove in the buffer block, and slows down at the tail end of the stroke. Therefore, the silent buffer spring bolt structure disclosed by the invention realizes functions of slow and stable restoration of the latch bolt, and achieves a technical effect of reducing door lock using noise.

Description

technical field [0001] The invention relates to a hardware door lock accessory, especially a lock body part of a door lock. Background technique [0002] At present, widely used deadbolts are used in the market. In order to realize automatic retraction and automatic ejection when closing the door, the surface in direct contact between the deadbolt and the door lock box is usually set as an inclined plane, and a spring is used to realize its automatic reset. With the improvement of people's consumption level, people's tolerance to the noise when closing and opening the door has decreased sharply. In order to reduce the impact of door lock noise and meet consumer demand, many technicians have proposed different solutions from various aspects, such as CN102644412A Disclosed is a silent door lock, including a lock box, in which a transmission mechanism and a lock tongue capable of axial telescopic movement are arranged, the surface of the lock tongue has an axial groove, and a ...

AI Technical Summary

Problems solved by technology

However, since the transmission mechanism in the lock box is usually made of metal materials, the transmission mechanism directly collides with the start and stop points under the action of the spring force during the reset process of the deadbolt, and makes noise, so further improvement is needed

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