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This article describes a low-cost, self-closing latch assembly which can be operated by a hexagonal socket wrench or, with slight modification, a Phillips-head screwdriver.
English (United States)
This text was extracted from a PDF file.
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100% of the total text.
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Tool Operated Moulder Latch
This article describes a low-cost, self-closing latch assembly which can be
operated by a hexagonal socket wrench or, with slight modification, a Phillips-
Fig. 1 shows the component parts of the latch which consists of a
polycarbonate moulded bezel 1 which can be secured in slot 2 of housing 3 by
integral retaining clips 4. A steel shaft 5, free to rotate, is secured within bore 6
of bezel 1 by means of a pin 7. Cam housing 8 is free to slide along guide
surfaces 9 of bezel 1 with pin 7 free to move along camming surface 10 when
shaft 5 is rotated.
Fig. 2 shows how cam housing 8 is urged towards bezel 1 by means of
spring arm 11 secured to housing 3. Spring arm 11 has a slot 122 which retains
latch arm 13 secured to openable part 14 of the housing.
As shown in Fig. 3, rotation in either direction of shaft 5 by means of
hexagonal socket wrench 15 causes the action of pin 7 on camming surface 10
to urge spring arm 11 away from housing 3 to release latch arm 13. This allows
housing part 14 to be opened.
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