Babyproof door knob lock

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(→Bill of Materials (Doorknob))
(→Bill of Materials (Doorknob))
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| spring || inner doorknob || -- || harden steel, nickel based alloy || wound, prehardened or hardened during fabrication || guides the lock by creating resistance in a locking shaft and keeping it aligned in a locking or unlocking position
| spring || inner doorknob || -- || harden steel, nickel based alloy || wound, prehardened or hardened during fabrication || guides the lock by creating resistance in a locking shaft and keeping it aligned in a locking or unlocking position
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|-
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! 8
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| lock shaft || inner doorknob || -- || plastic and brass || two molded parts, press fitted || turns shaft into lock/unlock positions
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|-
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! 9
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| ring || inner doorknob || -- || aluminum || stamped || serves as a buffer between knob spring and spring housing
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|-
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! 10
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| inner doorknob torsional spring || inner doorknob || -- || steel || molded and wrapped || creates resistance when turning doorknob, prevents free spinning
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|-
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! 11
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| spring housing || inner doorknob || -- || brass || stamped and bent || houses and secures torsional spring
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| outer plate locking mechanism || latch || -- || brass || stamped || attaches to door, similar to strike plate
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|-
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! 13
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| inner plate locking mechanism || latch || -- || brass || stamped || wedges between #12 and the door
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|-
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! 14
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| latch || latch || -- || steel || molded || latches door to door jam
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| lock attachment || latch || -- || steel || molded || attaches to latch, does not slide when locked
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|-
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| face for outer doorknob || outer doorknob || -- || brass || stamped || aesthetically pleasing
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! 17
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| hook || latch || -- || brass || stamped || hooks to latch or lock attachment
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Revision as of 18:34, 19 September 2007

Bill of Materials (Doorknob)

Number Name Origin Weight Material MT Function
1 circular wedge latch -- Aluminum stamped access a wedge to keep latch assembled in place inside door
2 pop rivot latch -- brass molded holds latch case
3 turning shaft outer doorknob -- steel molded functions key lock
4 screws x2 outer doorknob -- brass plated cold heading, thread wooling locks inner and outer doorknobs in place
5 latch plate latch -- brass stamped attaches to door jam (on door side)
6 strike plate latch -- brass stamped and bent attaches to door jam, allows latch to fit in hole
7 spring inner doorknob -- harden steel, nickel based alloy wound, prehardened or hardened during fabrication guides the lock by creating resistance in a locking shaft and keeping it aligned in a locking or unlocking position
8 lock shaft inner doorknob -- plastic and brass two molded parts, press fitted turns shaft into lock/unlock positions
9 ring inner doorknob -- aluminum stamped serves as a buffer between knob spring and spring housing
10 inner doorknob torsional spring inner doorknob -- steel molded and wrapped creates resistance when turning doorknob, prevents free spinning
11 spring housing inner doorknob -- brass stamped and bent houses and secures torsional spring
12 outer plate locking mechanism latch -- brass stamped attaches to door, similar to strike plate
13 inner plate locking mechanism latch -- brass stamped wedges between #12 and the door
14 latch latch -- steel molded latches door to door jam
15 lock attachment latch -- steel molded attaches to latch, does not slide when locked
16 face for outer doorknob outer doorknob -- brass stamped aesthetically pleasing
17 hook latch -- brass stamped hooks to latch or lock attachment
Retrieved from "https://wiki.ece.cmu.edu/ddl/index.php/Babyproof_door_knob_lock"
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