US 12,476,057 B2
Control apparatus for lifting mechanism
Miaojiang Ding, Shaoxing (CN); Yanjun Tong, Shaoxing (CN); and Shaoping Zhou, Shaoxing (CN)
Assigned to ZHEJIANG JIECANG LINEAR MOTION TECHNOLOGY CO., LTD., Shaoxing (CN)
Appl. No. 18/271,356
Filed by ZHEJIANG JIECANG LINEAR MOTION TECHNOLOGY CO., LTD., Zhejiang (CN)
PCT Filed Apr. 24, 2022, PCT No. PCT/CN2022/088650
§ 371(c)(1), (2) Date Jul. 7, 2023,
PCT Pub. No. WO2022/252870, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 202110599770.2 (CN), filed on May 31, 2021.
Prior Publication US 2024/0304400 A1, Sep. 12, 2024
Int. Cl. H01H 21/34 (2006.01); H01H 9/02 (2006.01); H01H 21/40 (2006.01)
CPC H01H 21/34 (2013.01) [H01H 9/0228 (2013.01); H01H 21/40 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A control apparatus for a lifting mechanism, comprising: a mount box mounted on the lifting mechanism, a circuit board, and a toggle assembly partially extended into a depth of the mount box, the circuit board comprising a lift switch which is elastically auto-reset and configured to control lifting, the toggle assembly being operable by pushing to close the lift switch, wherein a limit portion is provided on each of two sidewalls of the toggle assembly, the limit portion being staggered with the lift switch along a depth direction of the toggle assembly, the limit portion being vertically movable with the toggle assembly; and a stop portion is provided on each of two sidewalls of the mount box;
wherein the toggle assembly comprises a free state and a pushed state, where in the free state, the stop portion vertically stops the limit portion, while in the pushed state, the toggle assembly rotates about a pivot point which is a contact point between the stop portion and the limit portion;
and wherein the lift switch comprises an UP switch and a DOWN switch, the toggle assembly being operable by pushing to close the UP switch or the DOWN switch, the limit portion comprising a first limit portion disposed between the UP switch and the DOWN switch, and a second limit portion disposed between the first limit portion and the DOWN switch, the stop portion comprising a first stop portion cooperating with the first limit portion and a second stop portion cooperating with the second limit portion.