Combination structure of spring power assembly and head rail

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 9/322 (2006.01) E06B 9/68 (2006.01)

Patent

CA 2564718

A combination structure of a spring power assembly and a head rail is provided. A revolving shaft of a power spring is made to be perpendicular to a major axis of the head rail, so as to reduce the height of the head rail. The head rail has a first gripping part and the spring power assembly has a second gripping part corresponding to the first gripping part and a bayonet pin, which prevents the spring power assembly from being placed into the head rail along a wrong direction and/or prevents the spring power assembly from rotating along a wrong direction, so as to avoid damages to the spring power assembly caused by errors in the assembling process.

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