Browse Prior Art Database

Latch Mechanism

IP.com Disclosure Number: IPCOM000080044D
Original Publication Date: 1973-Oct-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Beck, JL: AUTHOR [+2]

Abstract

Latch mechanism 10 holds movable member 11 in contact with fixed member 12 when handle 13 is closed, but allows member 11 to swing away when handle 13 is raised. Mechanism 10 uses a simple toggling action to permit easy, one-hand operation, yet provides high-latching forces for mechanical stability.

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Latch Mechanism

Latch mechanism 10 holds movable member 11 in contact with fixed member 12 when handle 13 is closed, but allows member 11 to swing away when handle 13 is raised. Mechanism 10 uses a simple toggling action to permit easy, one-hand operation, yet provides high-latching forces for mechanical stability.

In the closed position, Fig. 1, link 14 engages stud 15. In this position, cantilevered stud 15 is deflected to provide the proper latching forces between members 11 and 12. To open the latch, handle 13 is swung clockwise about pivot stud 16. After link pivot 17 passes to the right of the toggle line defined by the centers of studs 15 and 16, link 14 begins a downward motion to release stud 15.

As handle 13 continues to swing, surface 18 of link 14 contacts handle pivot stud 16, Fig. 2. Further arm rotation causes link 14 to pivot about stud 16, thus moving it clear of stud 15.

In the open position, Fig. 2, lock arm 19 swings clockwise about pivot to hold the mechanism open at lock stud 21. Handle 13 may now be pulled downward to bring members 11 and 12 together and reclose the latch. When surface 22 of lock link 19 contacts stud 15, link 19 is pushed counterclockwise around pivot 20, to free it from stud 21. Further downward pressure causes hand 13 to begin rotating in a counter-clockwise direction. Mechanism 10 then closes and latches in a sequence opposite to the opening sequence. Spring 23 urges link 14 toward a closed position when link surface 18...