Hvac door and linkage assembly for doors rotating along non-parallel axes
AssigneeDENSO International America, Inc.
InventorSiyue Chen
Life of this patent
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Abstract
A heating, ventilation, and air conditioning (HVAC) door assembly includes a first HVAC door rotating about a first axis, a second HVAC door rotating about a second axis that is nonparallel with the first axis, an actuator, a mode cam. The mode cam is engaged with the actuator and controls movement of the first HVAC door and the second HVAC door.
Claims10
A heating, ventilation, and air conditioning (HVAC) door assembly comprising:
- a first HVAC door rotating about a first axis;
- a second HVAC door rotating about a second axis, the second axis being nonparallel with the first axis;
- an actuator;
- a mode cam engaged with the actuator and controlling movement of the first HVAC door and the second HVAC door;
- a first linkage assembly connecting the mode cam with the first HVAC door;
- and
- a second linkage assembly connecting the mode cam with the second HVAC door;
- wherein the second linkage assembly includes a mid-link, a rack link, and a link, the mid-link includes a protrusion that engages with at least one groove on a surface of the mode cam to transfer movement from the mode cam, the rack link engages with the mode cam to translate rotational movement into linear movement, and the link engages with the rack link to translate linear movement into rotational movement for the second door;
- and
- wherein the mid-link includes a gear having a plurality of teeth that mesh with a plurality of teeth on the rack link.
A heating, ventilation, and air conditioning (HVAC) door actuation assembly for controlling movement of a first HVAC door rotating about a first axis and a second HVAC door rotating about a second axis, the second axis being nonparallel with the first axis, the door actuation assembly comprising:
- an actuator;
- a mode cam engaged with the actuator and controlling movement of the first HVAC door and the second HVAC door;
- a first linkage assembly configured to connect the mode cam with the first HVAC door;
- and
- a second linkage assembly configured to connect the mode cam with the second HVAC door;
- wherein the second linkage assembly includes a mid-link, a rack link, and a link, the mid-link includes a protrusion that engages with at least one groove on a surface of the mode cam to transfer movement from the mode cam, the rack link engages with the mode cam to translate rotational movement into linear movement, and the link engages with the rack link to translate linear movement into rotational movement for the second door;
- and
- wherein the mid-link includes a gear having a plurality of teeth that mesh with a plurality of teeth on the rack link.
Dependencies are inferred from the claim text.