Patent ID: 9376839
Filing Date: 2016-06-28
CPC Classification: E05B,Y10T

Claim Text:
1. An electronic lock cylinder, comprising a mechanical rotation core, an electronic rotation core, a housing having a barrel shape with both ends of the housing opened for accommodating the mechanical rotation core and the electronic rotation core, and a retainer rod; wherein one end of the housing is a front end, and a position limitation chuck for axial position limitation is located at an opening of the front end of the housing; one end of the mechanical rotation core is a deflector rod with a flat portion, wherein the deflector rod is projected out of the front end of the housing, and a rear end of the mechanical rotation core is a first cavity of cylindrical shape, wherein at a position outside of a circle center of a bottom portion of the first cavity, there is a concave or recessed portion; a segment of a wall of the first cavity protrudes in an axial direction of the first cavity, forming a cambered position limitation portion, wherein a mechanical rotation core retainer slot, which is a through slot and in parallel with an axis of the first cavity, is provided at a middle portion of the cambered position limitation portion, dividing the cambered position limitation portion into a first position limitation portion and a second position limitation portion; the electronic rotation core is of a multiple-segment cylindrical shape, wherein one end of the electronic rotation core is a rear end, and at the rear end of the electronic rotation core there are electronic contacts, a front end of the electronic rotation core is inserted into the first cavity so as to be rotationally connected with the mechanical rotation core, and an electronic control unit and an electromagnet are disposed in the electronic rotation core, wherein the electronic control unit is connected with the electronic contacts and the electromagnet, respectively, and controls an action of the electromagnet; a through hole for telescoping of a core of the electromagnet is located at a position where the front end of the electronic rotation core mates with the concave or recessed portion, and a spring is located inside the electronic rotation core such that the core abuts against the spring so as to be projected; a cambered side slot is located at the front end of the electronic rotation core in a circumferential direction and is used to mate with the cambered position limitation portion of the mechanical rotation core, wherein the cambered side slot mates with the cambered position limitation portion in an axial direction of the electronic rotation core and the cambered side slot comprises an electronic rotation core retainer slot in the axial direction of the electronic rotation core, the electronic rotation core retainer slot dividing the cambered side slot into a first side slot corresponding to the first position limitation portion and a second side slot corresponding to the second position limitation portion, wherein an arc length of the first side slot is larger than or equal to an arc length of the first position limitation portion, and an arc length of the second side slot is larger than or equal to the sum of an arc length of the second position limitation portion and a width of the mechanical rotation core retainer slot; and an inner wall of the housing comprises a housing retainer slot in an axial direction of the housing.