Seat Track Memory with Sled Lock

• US 20150291061A1
• Filed: 10/05/2012
• Published: 10/15/2015
• Est. Priority Date: 10/05/2012
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Frese, Sandra, Mischer, Hans-Peter, Wojatzki, Michael, Joern, Sandmann
• Granted Patent: US 9,393,881 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60N 2/0248 with memory of positions
• CPC Class Codes: B60N 2/067 by linear actuators, e.g. linear screw mechanisms
• CPC Class Codes: B60N 2/075 roller-less
• CPC Class Codes: B60N 2/08 characterised by the locking device
• CPC Class Codes: B60N 2/123 and provided with memory locks

Abstract

A track set includes a memory assembly that is operable to an engaged state to set a user-selected position. When the memory assembly is in an engaged state and in the user-selected position, the memory assembly resists movement of a first rail relative to a second rail in an aft direction. When the memory assembly is in the engaged state and in the user-selected position and the second rail moves in a fore direction relative to the first rail, the memory assembly is displaced in the aft direction relative to the second rail to a first position.

Claims

1. A track set comprising:

a first rail;

a second rail supported on the first rail for relative movement in a fore direction and an aft direction;

a lock assembly attached to one of the first rail and the second rail and operable to a locked state to resist relative movement between the first rail and the second rail;

a memory assembly attached to the second rail and operable to an engaged state to set a user-selected position; and

an activation bracket that is operable to an engaged state to operate the lock assembly out of the locked state, and to operate the memory assembly to the engaged state;

wherein when the memory assembly is in the engaged state and in the user-selected position, the memory assembly resists movement of the second rail relative to the first rail in the aft direction; and

wherein when the memory assembly is in the engaged state and in the user-selected position and the second rail moves in the fore direction relative to the first rail, the memory assembly is displaced in the aft direction relative to the second rail to a first position.

2. The track set of claim 1, wherein the memory assembly further comprises a block that resists movement of the second rail relative to the first rail in the aft direction when the memory assembly is in the engaged state and in the user-selected position regardless of the state of the lock assembly.

3. The track set of claim 1, further comprising an actuator lock that is operated to a lock state when the memory assembly is displaced to the first position, wherein the actuator lock in the lock state resists operation of the activation bracket out of the engaged state.

4. The track set of claim 3, wherein the actuator lock is moved linearly when the actuator lock is operated to the lock state.

5. The track set of claim 3, further comprising a sled that is operable to an engaged state to operate the memory assembly to the engaged state.

6. The track set of claim 5, further comprising a latch that resists movement of the sled out of the engaged state regardless of the state of the activation bracket.

7. The track set of claim 6, further comprising a second actuator that is operable to disengage the sled from the latch.

8. A track set comprising:

a first rail fixed relative to a frame;

a second rail supported by the first rail for movement relative to the first rail in a fore direction and an aft direction;

a lock assembly attached to one of the first rail and the second rail, and operable to a locked state to resist relative movement between the first rail and the second rail; and

a memory assembly operable to an engaged state to set a user-selected position, the memory assembly including a memory wheel mounted relative to one of the first rail and the second rail, and a track mounted relative to the other of the second rail and the first rail, the memory wheel including teeth that engage openings defined by the track when the memory assembly is in the engaged state;

wherein when the memory assembly is in the engaged state and in the user-selected position, the memory assembly resists movement of the second rail relative to the first rail in the aft direction; and

wherein when the memory assembly is in the engaged state and in the user-selected position and the second rail moves relative to the first rail in the fore direction a predetermined distance, the memory assembly is displaced in the aft direction relative to the second rail the predetermined distance to a first position.

9. The track set of claim 8, further wherein when the memory assembly is in the first position and the second rail moves relative to the first rail in the fore direction, the memory wheel rotates relative to the track.