Aircraft passenger seat recline mechanism
First Claim
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1. A passenger seat recline mechanism, comprising:
- a seat back and a seat pan pivotally connected at a rearward end of the seat pan;
a seat base having first and second non-intersecting seat path guide slots having diverging rearwards ends, convergent mid-sections, and diverging forward ends, and wherein the forward end of the first seat path guide slot is positioned vertically above its mid-section;
a seat pan drive rail translatable relative to the seat base and pivotally connected at a forward end thereof to a forward end of the seat pan;
a translation guide assembly having spaced-apart first and second guides that travel in the first and second guide slots, respectively, such that the translation guide assembly rotates as it travels from the diverging rearward ends to the diverging forward ends of the first and second seat path guide slots such that the seat pan first increases and then decreases its inclination as the seat back reclines relative to the seat pan from an upright position to a horizontal position, the translation guide assembly further being pivotally connected to the rearward end of the seat pan; and
a seat back drive link pivotally interconnecting the translation guide assembly with the seat back;
wherein movement of the drive rail with respect to the seat base causes movement of the seat pan and movement of the translation guide assembly with respect to the first and second guide slots to adjust seat back and seat pan angles.
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Abstract
An adjustable passenger seat having a seat recline mechanism and including a seat base having first and second non-intersecting seat path guide slots for guiding the travel of a translation guide assembly interconnected to a linear translating seat pan drive rail through the seat pan such that translational movement of the drive rail with respect to the seat base causes movement of the seat pan and the seat back between upright and flat seating positions.
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Citations
13 Claims
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1. A passenger seat recline mechanism, comprising:
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a seat back and a seat pan pivotally connected at a rearward end of the seat pan; a seat base having first and second non-intersecting seat path guide slots having diverging rearwards ends, convergent mid-sections, and diverging forward ends, and wherein the forward end of the first seat path guide slot is positioned vertically above its mid-section; a seat pan drive rail translatable relative to the seat base and pivotally connected at a forward end thereof to a forward end of the seat pan; a translation guide assembly having spaced-apart first and second guides that travel in the first and second guide slots, respectively, such that the translation guide assembly rotates as it travels from the diverging rearward ends to the diverging forward ends of the first and second seat path guide slots such that the seat pan first increases and then decreases its inclination as the seat back reclines relative to the seat pan from an upright position to a horizontal position, the translation guide assembly further being pivotally connected to the rearward end of the seat pan; and a seat back drive link pivotally interconnecting the translation guide assembly with the seat back; wherein movement of the drive rail with respect to the seat base causes movement of the seat pan and movement of the translation guide assembly with respect to the first and second guide slots to adjust seat back and seat pan angles. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A passenger seat having a seat recline mechanism for adjusting the seat between upright and flat seating positions, comprising:
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a seat back and a seat pan pivotally connected for cooperative movement; a seat base carrying first and second guide slots having diverging rearwards ends, convergent mid-sections, and diverging forward ends, and wherein the forward end of the first guide slot is positioned vertically above its mid-section; a seat pan drive rail associated with the seat base and translatable relative thereto, the drive rail pivotally connected at a forward end to a forward end of the seat pan; a translation guide assembly pivotally connected to a rearward end of the seat pan at a connection point below a connection point of the seat pan and the seat back, the translation guide assembly having spaced-apart first and second guides thereon that travel in the first and second guide slots, respectively, such that the translation guide assembly rotates as it travels from the diverging rearward ends to the diverging forward ends of the first and second guide slots such that the seat pan first increases and then decreases its inclination as the seat back reclines relative to the seat pan from an upright position to a horizontal position; and seat back drive linkage pivotally interconnecting the translation guide assembly and the seat back; wherein movement of the drive rail with respect to the seat base causes movement of the seat pan and movement of the translation guide assembly with respect to the first and second guide slots to adjust seat back and seat pan angles. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification