US 11,988,021 B2
Miniature smart lock with anti-prizing function
Lili Qiu, Shanghai (CN)
Assigned to Shanghai Shanmai Electronic Technology Development Co., Ltd., Shanghai (CN)
Appl. No. 17/607,793
Filed by SHANGHAI SHANMAI ELECTRONIC TECHNOLOGY DEVELOPMENT CO., LTD., Shanghai (CN)
PCT Filed Mar. 17, 2020, PCT No. PCT/CN2020/079688
§ 371(c)(1), (2) Date Oct. 29, 2021,
PCT Pub. No. WO2021/027282, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 201910743235.2 (CN), filed on Aug. 13, 2019.
Prior Publication US 2022/0220776 A1, Jul. 14, 2022
Int. Cl. E05B 47/02 (2006.01); E05B 47/00 (2006.01)
CPC E05B 47/026 (2013.01) [E05B 47/0004 (2013.01); E05B 2047/0016 (2013.01); E05B 2047/0037 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A miniature smart lock with an anti-prising function, comprising:
a lock shell; and
a magnetic rod;
a push head;
a bolt;
a V-shaped push rod;
an anti-prising guide slot; and
a positioning guide pin, each of which is mounted in the lock shell;
wherein a magnetic coil is mounted surrounding an outer portion of the magnetic rod, a magnetic rod spring is mounted on the magnetic rod on a left side of the magnetic coil, the push head is mounted at a right end of the magnetic rod, the V-shaped push rod is connected to a right end of the push head via a V-shaped push rod connection pin, the V-shaped push rod is movably connected to the bolt via an anti-prising pin, an end of the anti-prising pin, which passes through the V-shaped push rod and the bolt, is arranged within the anti-prising guide slot, the anti-prizing guide slot comprises a bottom lateral slot and a longitudinal slot, the bottom lateral slot is parallel to a bottom of the lock shell and the longitudinal slot extends towards a top of the lock shell in an inclined line, the positioning guide pin is connected to a right side of the bolt, and a return spring connected with the lock shell is mounted at a lower part of the positioning guide pin;
wherein when the magnetic coil is powered on to generate a magnetic field, the magnetic rod moves to the right, the push head is linked to push the V-shaped push rod to drive the anti-prizing pin first to slide to the right horizontally to the far right along the bottom lateral slot and then to move Upward along the longitudinal slot, to drive the bolt to lift up; when energizing of the magnetic coil ends, the bolt is moved downward through the return spring, and the anti-prizing pin is driven to move downward along the longitudinal slot until the bolt is locked, and while the return spring moves, the magnetic rod spring drives the magnetic rod and the push head and links the V-shaped push rod to move to the left, and the V-shaped push rod drives the anti-prizing pin to move to the left along the bottom lateral slot to the far left so that the bolt cannot be lifted upwards.