Elastic piece type fixing device for metal rear cover of electronic door lock

Abstract

The invention discloses an elastic piece type fixing device for a metal rear cover of an electronic door lock. The elastic piece type fixing device comprises a door lock outer shell, and a step structure with one end lower than the other end is formed on the back face of the door lock outer shell. The elastic piece type fixing device is further provided with the metal rear cover and a rear cover elastic piece. The lower end of the back face of the door lock outer shell is right covered and sleeved with the metal rear cover. The rear cover elastic piece is fixedly mounted on the inner side wall of the side, facing the door lock outer shell, of the metal rear cover, and an elastic clamping portion of the rear cover elastic piece stretches out of the metal rear cover. A groove matched with the elastic clamping portion of the rear cover elastic piece in position and size is formed in the step face between the two ends of the door lock outer shell, and the elastic clamping portion of the rear cover elastic piece can exactly stretch into the groove to be connected with the groove in an elastic clamping mode. The rear cover of the door lock is made of metal, so that the metal rear cover is not prone to being damaged after long-time use; the service life of the door lock and mounting stability of the rear cover can be guaranteed; the whole door lock outer shell is made of metal and is metallic, attractive, fashionable, high-end and elegant in appearance.

Description

technical field [0001] The invention relates to a door lock shell, in particular to a shrapnel type fixing device for the metal rear cover of an electronic door lock. Background technique [0002] The back cover used to cover the battery slot on the back of the door lock on the market is made of plastic, and the back cover is installed by inserting several inserts into the slots of the door lock shell. The plastic back cover and the metal door lock shell body Splicing together makes the door lock less aesthetically pleasing, and the plastic back cover itself has low strength, and the plastic inserts are easily broken and damaged, making it difficult to install the back cover stably after long-term use, which affects the service life of the door lock. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a metal rear cover spring-type fixing device for an electronic door lock, which can prolong the service life o...

AI Technical Summary

Problems solved by technology

[0002] The back cover used to cover the battery slot on the back of the door lock on the market is made of plastic, and the back cover is installed by inserting several inserts into the slots of the door lock shell. The plastic back cover and the metal door lock shell body Splicing together makes the door lock less beautiful, and the plastic back cover itself has low strength, and the plastic insert is easy to break and damage, making it difficult to install the back cover stably after long-term use, which affects the service life of the door lock

Images