Babyproof door knob lock

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(→Bill of Materials (Doorknob))
(→Bill of Materials (Doorknob))
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| inner doorknob rose || inner doorknob || -- || brass || stamped and bent || connects door to doorknob, attaches and connects inner and outer doorknobs
| inner doorknob rose || inner doorknob || -- || brass || stamped and bent || connects door to doorknob, attaches and connects inner and outer doorknobs
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|-
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! 32
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| inner doorknob || inner doorknob || -- || brass || molded/pressed/clamped || it is gripped by the user to engage latch from inside the door
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|-
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! 33
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| spring housing || outer doorknob || -- || brass || stamped and bent || houses spring mechanism on the outer doorknob
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|-
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! 34
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| bottom spring plate || outer doorknob || -- || steel || stamped || spring pushes against it to create torque
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! 35
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| top spring plate || outer doorknob || -- || steel || stamped || spring pushes against it to create torque
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|-
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| outer knob torsional spring || outer doorknob || -- || steel || molded/wrapped || creates resistance when turning doorknob to prevent free spinning of the knob
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| outer doorknob rose plate || outer doorknob || -- || brass || stamped and bent || attaches doorknob to door, acts as a faceplate
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|-
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! 38
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| outer doorknob rose || outer doorknob || -- || steel || molded and tapped || houses screws and connects inner doorknob to outer doorknob
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|-
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| outer doorknob ring || outer doorknob || -- || aluminum || stamped and molded || secures doorknob connector into rose
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| cylindrical connector || inner doorknob || -- || steel || molded || connects doorknob to rose and secured with ring
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| spindle || outer doorknob || -- || brass plated steel || molded || semi-cylinder that wraps around the turning shaft
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| outer doorknob || outer doorknob || -- || brass || molded/pressed/clamped || is gripped by user to engage latch from outside the door
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|-
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! 43
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| cone-shaped connector || outer doorknob || -- || steel || molded || secures outer doorknob to rose and houses locking mechanism, spindle, and locking shaft
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! 44
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| lock mechanism || outer doorknob || -- || steel/aluminum/other || stamped/sealed/molded/assorted || mechanism engages lock
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Revision as of 22:54, 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
18 large hooks x2 latch -- steel stamped pulls back latch
19 hook mechanism plate latch -- plastic molded/injection molding hooks #18 to latch
20 small hook from lock latch -- brass molded (unknown use)
21 pin latch -- brass stamped and bent adjusts locking mechanism between two different lengths
22 black plastic inner doorknob -- plastic molded (unknown use)
23 locking mechanism housing latch -- brass molded and hole punched houses small pieces in latch
24 short pin latch -- brass molded slides back and forth when size is adjusted
25 plastic hooks latch -- plastic molded slides back and forth when size is adjusted, may pull back when hook is tilted to latch
26 latch housing latch -- brass molded and hole punched houses mechanism controlling hooks for latch
27 sliding plate latch -- brass molded and hole punched slides back and forth, may align holes to those in the door or second housing piece
28 two lock springs latch -- steel/nickel alloy wound impacts latch mechanism
29 inner doorknob ring inner doorknob -- aluminum stamped and molded locks doorknob into rose, locks doorknob's cylindrical connector
30 inner doorknob rose plate inner doorknob -- brass stamped and bent attaches doorknob to door, acts as faceplate
31 inner doorknob rose inner doorknob -- brass stamped and bent connects door to doorknob, attaches and connects inner and outer doorknobs
32 inner doorknob inner doorknob -- brass molded/pressed/clamped it is gripped by the user to engage latch from inside the door
33 spring housing outer doorknob -- brass stamped and bent houses spring mechanism on the outer doorknob
34 bottom spring plate outer doorknob -- steel stamped spring pushes against it to create torque
35 top spring plate outer doorknob -- steel stamped spring pushes against it to create torque
36 outer knob torsional spring outer doorknob -- steel molded/wrapped creates resistance when turning doorknob to prevent free spinning of the knob
37 outer doorknob rose plate outer doorknob -- brass stamped and bent attaches doorknob to door, acts as a faceplate
38 outer doorknob rose outer doorknob -- steel molded and tapped houses screws and connects inner doorknob to outer doorknob
39 outer doorknob ring outer doorknob -- aluminum stamped and molded secures doorknob connector into rose
40 cylindrical connector inner doorknob -- steel molded connects doorknob to rose and secured with ring
41 spindle outer doorknob -- brass plated steel molded semi-cylinder that wraps around the turning shaft
42 outer doorknob outer doorknob -- brass molded/pressed/clamped is gripped by user to engage latch from outside the door
43 cone-shaped connector outer doorknob -- steel molded secures outer doorknob to rose and houses locking mechanism, spindle, and locking shaft
44 lock mechanism outer doorknob -- steel/aluminum/other stamped/sealed/molded/assorted mechanism engages lock
Retrieved from "https://wiki.ece.cmu.edu/ddl/index.php/Babyproof_door_knob_lock"
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