US 11,908,654 B2
Safety switch
Choryon Oh, Osaka (JP); Yu Babasaki, Osaka (JP); and Lye Tatt Cheah, Osaka (JP)
Assigned to KEYENCE CORPORATION, Osaka (JP)
Filed by Keyence Corporation, Osaka (JP)
Filed on Dec. 9, 2022, as Appl. No. 18/078,257.
Application 18/078,257 is a continuation of application No. 16/270,613, filed on Feb. 8, 2019, granted, now 11,551,884.
Claims priority of application No. 2018-077633 (JP), filed on Apr. 13, 2018.
Prior Publication US 2023/0104627 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01H 9/28 (2006.01); F16P 3/08 (2006.01); H01H 9/22 (2006.01); H01H 27/00 (2006.01)
CPC H01H 9/285 (2013.01) [F16P 3/08 (2013.01); H01H 9/22 (2013.01); H01H 2027/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A safety switch having a lock mechanism for locking a bolt of an actuator including a transponder, comprising:
a casing having a shape elongated along a first direction;
a metal head coupled to a first end side of the casing in the first direction, and having a receiving space for receiving the bolt of the actuator, and a first attachment hole formed along a second direction orthogonal to the first direction;
a wireless circuit disposed in the casing to receive a wireless signal from the transponder;
a lock pin in the lock mechanism, configured to regulate pull-out of the bolt from the receiving space by disposing at a lock position in a lock state, and configured to allow pull-out of the bolt from the receiving space by disposed at an unlock position in an unlock state, the lock pin being switchable between the lock position and the unlock position; and
a switching device disposed in the casing to output a safety signal indicating a safety state based at least on the wireless signal received via the wireless circuit, and
wherein the first attachment hole is provided for fixing the metal head by a first attachment member disposed along the second direction through the first attachment hole.