CLUTCH FOR BLINDS
FIG4 is a side view of the chain guard housing and clutch assembly of FIG1 in the engaged state  FIG5 is a side view of the chain guard housing and clutch assembly of FIG1 in the disengaged state
FIG4 is a side view of the chain guard housing and clutch assembly 100 in the engaged state. In the engaged state the rim 132 of the wheel cover 130 covers a portion of the chain wheel 120, such that the chain cannot become disengaged from the teeth 123 during rotation. In the engaged state, the cylindrical body 131 of the wheel cover 130 is fully inserted into the chain wheel 120.  FIG5 shows the disengaged state, in which the rim 132 of the chain wheel cover 130 does not cover the teeth 123. In this disengaged state, the chain may be inserted into or removed from the chain guard housing and clutch assembly 100.
side view
130
cover
123
teeth
100
clutch assembly
132
rim
110
drive spline
120
chain wheel
['1. A chain guard housing and clutch assembly (100, 200) for a blind comprising, a first end (100\', 200\') which is inserted into a roller blind tube; a second end (100", 200") engageable with a wall mounting bracket; a drive spline (110, 210) forming the outer part of the chain guard housing and clutch assembly which engages with the inside of a roller blind tube; a chain wheel (120, 220), connected to the drive spline (110, 210); a chain cover module (130, 230) comprising a rim (132, 232), the rim covering part of the chain wheel (120, 220); a central pin (114, 214) extending from the drive spline at the first end, the central pin comprising at least one deformable leg (115, 215) engaged with the chain cover (131, 231) via an outward facing catch face (116, 216) on the leg, thus preventing axial movement of the chain cover module relative to the drive spline;  characterized in that a quick release actuator (140, 240) is located at a second end of the assembly comprising an inner annular abutment surface (145, 245) in contact with the at least one leg (115, 215).']