Door opener: pulley and counterweight system.
Print Profile(1)
Description
Door (and hatch) opener with a pulley and counterweight system.
my use case is to make sure the door stays open when it is not properly locked. A door that seems closed but isn't locked can create a dangerous situation with dogs escaping on a busy road.
Keeping an attic hatch open might also be a useful application.
Hardware needed:
- 8 3.5mm screws (20 to 30 mm long)
- 1-2 m 6mm nylon rope (depending on your usecase)
- 2 M6x30 bolts (panhead or Allen bolt)
- 2 M6 nuts
all in A2-70 stainles steel or zinc plated steel.
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My goal is to make useful designs that make a life easier or help people to repair their things.
All designs are unique and parametric.
All designs are printed and used in daily life.
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License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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