Browse Prior Art Database

Push To Latch/Push To Unlatch Switch

IP.com Disclosure Number: IPCOM000075228D
Original Publication Date: 1971-Aug-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Alexander, JS: AUTHOR

Abstract

An inexpensive, simple, reliable, push-to-latch/push-to-unlatch switch or latch is shown in Fig. 1. The switch is mounted on a mounting bracket 10. Mounting bracket 10 is provided with a spring retaining appendage 12 and an opening 14. The opening 14 allows the upper end of latch spring 16 to extend through mounting bracket 10. Latch spring 16 is rigidly attached at one point to bracket 10.

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Push To Latch/Push To Unlatch Switch

An inexpensive, simple, reliable, push-to-latch/push-to-unlatch switch or latch is shown in Fig. 1. The switch is mounted on a mounting bracket 10. Mounting bracket 10 is provided with a spring retaining appendage 12 and an opening 14. The opening 14 allows the upper end of latch spring 16 to extend through mounting bracket 10. Latch spring 16 is rigidly attached at one point to bracket 10.

Key stem 18 supports key 20 on its uppermost portion for reciprocal movement. The depression of key 20 moves key stem 18 downward and forces latch spring 16 to deviate from its rest position. Referring to Figs. 2, 3, 4, and 5, latch spring 16 is illustrated in its home or rest position (unlatched) in Fig. 2. By depressing key stem 18, latch spring 16 is cammed along inclined surface 22. When key stem 18 is fully depressed, latch spring 16 slips off incline surface 22 and becomes positioned against stop 24, as shown in Fig. 3. Stop 24 prevents latch spring 16 from completely resetting to its unflexed position. As key stem 18 is released, the stem is restored by return spring 26 illustrated in Fig. 1 as connecting spring retainer 12 and key stem 18 by a return spring tab 28. As key stem 18 is restored upward by return spring 26, latch spring 16 disengages from stop 24 and is captured by notch 30 of key stem 18. This engagement of latch spring 16 and notch 30 prevents the complete restoration of key stem 18. Upon a second depression of key 20...