SMARTFOLD POWER DRIVE
A smart fold power drive that can be used to electronically articulate a seat with a motor. The drive may be configured to allow partial positioning of the seat while the motor is stopped. The motor may be used to position the seat between any number of positions.
1 . A seat back fold system comprising:
a seat back configured to rotate about a first axis;
a gear that also rotates about the first axis and that is operatively connected to the seat back; and
a motorized drive that rotates about a second axis that is orthogonal to the first axis, the drive being operatively connected to the gear such that sufficient rotation of the drive about the second axis causes the worm gear to rotate the seat back about the first axis.
2 . The system of claim 1 wherein a connection between the gear and seat back allows the seat back to partially rotate when the gear is held in a fixed position.
3 . The system of claim 2 wherein the connection between the gear and the seat back is defined by a bracket included in the seat back having a groove that receives a stopper included on a face of the gear.
4 . The system of claim 3 wherein a width of the groove is greater than a width of the stopper.
5 . The system of claim 4 wherein an amount that the seat back is able to partially rotate when the gear is held in the fixed position is proportional to a difference in width between the width of the stopper and the width of the groove.
6 . The system of claim 3 wherein the gear is only able to rotate the bracket when the stopper presses against a side of the groove.
7 . The system of claim 6 further comprising a locking mechanism operably connected to the seat back bracket that is operable between locked and unlocked positions, the locked position preventing the seat bracket from rotating and the unlocked position freeing the seat back to rotate, and wherein the drive is only able to rotate the seat back when the locking mechanism is in the unlocked position.
8 . The system of claim 7 wherein the seat back bracket is unable to partially rotate when the gear is held in the fixed position unless the locking mechanism is in the unlocked position.
9 . The system of claim 1 wherein the drive includes a having spirally shaped grooves that engage with teeth included on an outer diameter of the gear, wherein the teeth travel along the spirally shaped grooves when the drive rotates.
10 . A motorized seat comprising:
a seat back bracket attached to a seat back;
a motorized driver operatively connected to the seat back bracket that rotates the seat back bracket about a first axis, wherein a connection between the seat back bracket and the motorized driver allows the seat back bracket to be rotated when the motorized driver is stopped.
11 . The system of claim 10 wherein the motorized driver includes a gear that rotates about the first axis, wherein the gear includes an element that acts against the seat back bracket when the driver is used to rotate the seat back, wherein the element is held in a fixed position when the driver is stopped.
12 . The system of claim 11 wherein the seat back bracket includes a groove that receives the element, wherein the element travels within the groove and against the seat back bracket when the driver is running.
13 . The system of claim 12 wherein a width of the groove is greater than a width of the element, the difference in widths allowing the seat back bracket to rotate when the driver is stopped.
14 . The system of claim 13 wherein the element must travel the width of the groove before the seat back bracket begins to rotate if the seat back bracket was rotated while the driver was stopped.
15 . The system of claim 11 wherein the element is a stopper that extends sidewise from a face of the gear.
16 . The system of claim 15 wherein the driver includes a rotary element that rotates about a second axis, wherein the rotary element is configured to cooperate with teeth include on a perimeter of the gear in order to cause the gear to rotate and the seat back to be correspondingly rotated about the first axis.
17 . The system of claim 10 wherein the seat back includes a bracket and the motorized driver includes a gear, the gear and bracket rotate about the first axis, the gear includes at least two stoppers that engage separate grooves included on the bracket.
18 . The system of claim 17 wherein the grooves are wider than the stoppers, wherein the seat back bracket is able to rotate without the gear rotating for a distance equal to a difference in width between the stoppers and the grooves.
19 . The system of claim 18 further comprising a locking mechanism that is configured to lock the seat back bracket independently of the operation of the motorized driver.
20 . The system of claim 19 wherein the motorized driver is unable to rotate the seat back when the locking mechanism is locked.