US 11,658,549 B2
Trigger lockout with dissimilar actions
Ola Agne, Taberg (SE); Eric Lennings, Huskvarna (SE); and Thomas Arnell, Huskvarna (SE)
Assigned to Globe (Jiangsu) Co., Ltd., Jiangsu (CN)
Appl. No. 16/651,262
Filed by Globe (Jiangsu) Co., Ltd., Changzhou (CN)
PCT Filed Sep. 27, 2017, PCT No. PCT/CN2017/103729
§ 371(c)(1), (2) Date Mar. 26, 2020,
PCT Pub. No. WO2019/061084, PCT Pub. Date Apr. 4, 2019.
Prior Publication US 2020/0266690 A1, Aug. 20, 2020
Int. Cl. H02K 11/28 (2016.01); A01G 20/47 (2018.01); A01D 34/00 (2006.01); A01D 34/84 (2006.01); A01G 3/053 (2006.01); A01G 3/08 (2006.01); B25F 5/02 (2006.01); H02K 7/14 (2006.01); B27B 17/02 (2006.01); B27B 17/08 (2006.01)
CPC H02K 11/28 (2016.01) [A01D 34/006 (2013.01); A01D 34/84 (2013.01); A01G 3/053 (2013.01); A01G 3/086 (2013.01); A01G 20/47 (2018.02); B25F 5/02 (2013.01); H02K 7/145 (2013.01); B27B 17/02 (2013.01); B27B 17/08 (2013.01); H02K 2213/06 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A control assembly for selectively controlling actuation of an electric motor arranged to power a working assembly of a hand-held power tool, the control assembly being configured to provide the selective control based on combined performance of two dissimilar operator actions, the control assembly comprising:
an electronic control unit configured to control operation of the electric motor;
a switch member, functionally coupled to the electronic control unit and configured to be operable to an actuated state responsive to an enabling action comprising a first of the two dissimilar operator actions; and
a throttle control member, functionally coupled to the electronic control unit, biased towards an unactuated position, and configured to become operable responsive to actuation of the throttle control member past a first movement threshold while the switch member is in the actuated state,
wherein actuation of the throttle control member past the first movement threshold comprises a second of the two dissimilar operator actions,
the throttle control member is arranged to provide haptic operator feedback by differentiated resistance to movement above and below the first movement threshold,
the throttle control member is configured to remain repeatedly operable responsive to actuation of the throttle control member above a second movement threshold located below the first movement threshold, even if the switch member is brought to a non-actuated state,
actuation of the throttle control member below the second movement threshold to renders the throttle control member non-operable until renewed combined performance of the first and second dissimilar operator actions; and
releasing the throttle control member returns the throttle control member to the unactuated position rendering the throttle control member non-operable until renewed combined performance of the first and second dissimilar operator actions.