Easy entry seat adjuster

• US 4,621,867 A
• Filed: 04/04/1985
• Issued: 11/11/1986
• Est. Priority Date: 04/04/1985
• Status: Expired due to Term

• Current Assignee: Lear Corporation
• Original Assignee: General Motors Corporation (General Motors Company)
• Inventors: Perring, John, Watkinson, William J.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Rendos, Thomas A.
• Application Number:
  US06/720,370
• Time in Patent Office: 586 Days
• Field of Search: 297/340, 297/341, 297/344, 297/346, 297/337, 297/311, 248/429, 248/430, 248/419, 248/420, 248/393, 403/108
• US Class Current: 297/341
• CPC Class Codes: B60N 2/123 and provided with memory locks

Abstract

An easy entry seat adjuster includes upper and lower track members which are slidable relative to each other. A latch carrier is slidably mounted on both track members and mounts a latch member having latch arms engageable within an opening of the upper track member and any one of a series of openings in the lower track member. Manual movement of the latch member out of engagement with an opening of the lower track member permits horizontal adjustment of the seat as the latch member carrier and upper track member move relative to the lower track member. Movement of the latch member out of engagement with the opening of the upper track member by a seat back actuated cam on the upper track member permits displacement of the upper track member between a horizontally adjusted position and easy entry position.

Claims

1. An easy entry seat adjuster comprising, in combination, a pair of track members, means slidably mounting one track member on the other track member for longitudinal adjustment relative thereto, one track member having an opening therein and the other track member having a plurality of openings therein, each pairable with the opening of the one track member to define a horizontally adjusted position of the track members, a latch carrier slidably mounted on the track members, latch means movably mounted on the carrier for movement in a plane longitudinal of the track members and including a pair of latch arms extending oppositely of each other, one latch arm being movable into and out of the opening of the one track member and the other latch arm being movable into and out of each of the openings of the other track member, means interconnecting the carrier and the latch means and normally locating the latch means with one latch arm extending into the one opening and the other latch arm extending into a paired opening of the other track member to releasably latch the track members to each other in a longitudinal adjusted position, means moving the latch means relative to the carrier to move the one arm further into the one opening as the other latch arm moves out of the opening of the other track member to permit movement of the one track member, the carrier and the latch means as a unit relative to the other track member to a new adjusted position relative thereto, the reengagement of the other latch arm in another opening of the other track member releasably latching the track members to each other in the new adjusted position, and means for moving the latch means relative to the carrier to move the other latch arm further into the opening of the other track member as the one latch arm moves out of the opening in the one track member to permit movement of the one track member relative to the other track member, the carrier and the latch means from an initial starting position to an easy entry position, return of the one track member to the initial starting position reengaging the one latch arm in the opening of the one track member to releasably latch the one track member to the other track member in the initial starting position.

2. An easy entry seat adjuster comprising, in combination, a pair of track members, means slidably mounting one track member on the other track member for longitudinal adjustment relative thereto, one track member having an opening therein and the other track member having a plurality of openings therein, each pairable with the opening of the one track member to define a horizontally adjusted position of the track members, a latch carrier slidably mounted on the track members, a latch member rotatably mounted on the carrier and including a pair of latch arms extending oppositely of each other, one latch arm being movable into and out of the opening of the one track member and the other latch arm being movable into and out of each of the openings of the other track member, resilient means interconnecting the carrier and the latch member and normally locating the latch member with one latch arm extending into the one opening and the other latch arm exending into a paired opening of the other track member to releasably latch the track members to each other in a longitudinal adjusted position, means rotating the latch member in one direction relative to the carrier to move the one arm further into the one opening as the other latch arm moves out of the opening of the other track member to permit movement of the one track member, the carrier and the latch member as a unit relative to the other track member to a new adjusted position relative thereto, the reengagement of the other latch arm in another opening of the other track member releasably latching the track members to each other in the new adjusted position, and means rotating the latch member in an opposite direction relative to the carrier to move the other latch arm further into the opening of the other track member as the one latch arm moves out of the opening in the one track member to permit movement of the one track member relative to the other track member, the carrier and the latch member from an initial starting position to an easy entry position, return of the one track member to the initial starting position reengaging the one latch arm in the opening of the one track member to releasably latch the one track member to the other track member in the initial starting position.

3. An easy entry seat adjuster comprising, in combination, a pair of relatively movable track members, one track member having an opening therein and the other track member having a plurality of openings therein, each pairable with the opening of the one track member, a latch carrier slidably mounted on the track members, a latch member rotatably mounted on the carrier and including a pair of latch arms, one latch arm being movable into and out of the opening of the one track member and the other latch arm being movable into and out of each of the openings of the other track member, means interconnecting the carrier and the latch member and normally locating the latch member in a first latched position wherein one latch arm extends into the one opening and the other latch arm extends into a paired opening of the other track member to releasably latch the carrier and the track members to each other in one position, first operator controlled means rotating the latch member relative to the carrier to a second latch position wherein one arm remains in the one opening and the other latch arm moves out of the paired opening of the other track member to permit movement of the one track member, the carrier and the latch member as a unit relative to the other track member to an adjusted position relative thereto, the reengagement of the other latch arm in another paired opening of the other track member releasably latching the track members to each other in the adjusted position, and second operator controlled means for rotating the latch member relative to the carrier to a third latched position wherein the other latch arm remains in the paired opening of the other track member and the one latch arm moves out of the opening in the one track member to permit movement of the one track member relative to the other track member, the carrier and the latch member from an initial starting position to an easy entry position, return of the one track member to the initial starting position reengaging the one latch arm in the opening of the one track member to releasably latch the one track member to the other track member in the initial starting position.

4. The combination recited in claim 3 wherein the first operator controlled means is cammingly engageable with the latch member to rotate the latch member from the first latched position to the second latched position, and the locating means resiliently resists rotation of the latch member from the first latch position and returns the latch member to such position upon release of the first operator controlled means.

5. The combination recited in claim 3 wherein the second operator controlled means is cammingly engageable with the latch member to rotate the latch member from the first latched position to the third latched position, and the locating means resiliently resists movement of the latch member from the first latched position and returns the latch member to such position upon release of the second operator controlled means.

6. The combination recited in claim 3 wherein the first and second operator controlled means are selectively and alternately engageable with the latch member to rotate the latch member from the first latched position to the respective second and third latched positions.

7. An easy entry seat adjuster comprising, in combination, a pair of relatively movable track members, a latch carrier slidably mounted on both track members, a latch member rotatably mounted on the carrier for movement to a plurality of latched positions, resilient means interconnecting the carrier and the latch member and normally biasing the latch member to a first latched position wherein the latch member engages both track members to releasably latch the track members to each other in an adjusted position, first operator controlled means releasably engageable with the latch member to move the latch member against the bias of the resilient means to a second latched position wherein the latch member unlatches the carrier from the other track member and latches the carrier to the one track member to permit movement of the one track member, the carrier and the latch member as a unit relative to the other track member to a new adjusted position relative thereto, release of the first operator controlled means permitting the resilient means to return the latch member to the first latched position to releasably latch the track members to each other in the new adjusted position, and second operator controlled means releasably engageable with the latch member to move the latch member against the bias of the resilient means to a third latched position wherein the latch member unlatches the carrier from the one track member and latches the carrier to the other track member to permit movement of the one track member relative to the other track member, the carrier and the latch member from an initial starting postion to an easy entry position, return of the one track member to the initial starting position and release of the second operator controlled means permitting the resilient means to return the latch member to the first latched position to releasably latch the track members to each other in the initial starting position.

8. The combination recited in claim 7 wherein the second operator controlled means includes a cam member pivotally supported on the one track member for movement between neutral position to an operating position to move the latch member from the first latched position to the third latched position, and means independent of the second operator controlled means for moving the cam member from the operating position to the neutral position upon return movement of the one track member from the easy entry position to the initial starting relative position to permit the locating means to move the latch member from the unlatched position with respect to the one track member to latched position with respect thereto.