MULTI-PIVOT LATCH ASSEMBLIES

• US 20090250946A1
• Filed: 06/16/2009
• Published: 10/08/2009
• Est. Priority Date: 03/31/2008
• Status: Active Grant

• Current Assignee: Shield Restraint Systems, Inc. (Transdigm Group Incorporated)
• Original Assignee: Amsafe Commercial Products, Inc. (Transdigm Group Incorporated)
• Inventors: Buckingham, Fred, Main, Mark E.
• Granted Patent: US 8,220,118 B2
• Time in Patent Office: Days
• US Class Current: 292/175
• CPC Class Codes: B60N 2/2806 for securing the child seat to the vehicle
• CPC Class Codes: B60N 2/2887 Fixation to a transversal anchorage bar, e.g. isofix
• CPC Class Codes: B60R 22/26 secured to the seat
• CPC Class Codes: F16B 45/008 plastics
• CPC Class Codes: F16B 45/029 the position-locking means being slidably mounted
• CPC Class Codes: F16B 45/035 the hook forming a loop or ring when interlocked with the closing member, i.e. the entire structure of the hook being loop shaped
• CPC Class Codes: Y10T 24/45319 Pivotally connected gate
• CPC Class Codes: Y10T 24/4533 Gate also slides relative to pivot
• CPC Class Codes: Y10T 24/45717 having cavity with side walls and axially biased component capping end
• CPC Class Codes: Y10T 292/0997 Rigid
• CPC Class Codes: Y10T 292/1046 Cam

Abstract

Latch assemblies for releasably engaging anchor members and other attachment points in vehicles are disclosed herein. A multi-pivot latch assembly configured in accordance with one embodiment of the disclosure includes a latch and an ejector movably coupled to a frame. In some embodiments, a biasing member holds the latch in a first or open position prior to attachment to an anchor member. When the anchor member presses against the ejector, the latch pivots from the first or open position to a second position about a first pivot point, and then from the second position to a third or fully closed position about a second pivot point.

Claims

1. A latch assembly for use in a vehicle, the latch assembly comprising:

a frame having a proximal end portion and a distal end portion;

a latch movably coupled to the frame proximate the distal end portion;

an ejector movably coupled to the frame proximate the latch; and

a biasing member operably coupled between the latch and the ejector, wherein movement of the ejector toward the proximal end portion of the frame drives the biasing member against the latch, causing the latch to releasably engage an anchor member in the vehicle by pivoting about a first pivot point and then a second pivot point spaced apart from the first pivot point.

2. The latch assembly of claim 1 wherein movement of the ejector toward the proximal end portion of the frame causes the latch to pivot from an open position toward a closed position.

3. The latch assembly of claim 1 wherein the frame includes a first opening and a second opening, and wherein the latch includes a first guide feature and a second guide feature, wherein the first guide feature is movably received in the first opening of the frame and the second guide feature is movably received in the second opening of the frame.

4. The latch assembly of claim 1 wherein the frame includes a first elongate opening and a second elongate opening, and wherein the latch assembly further comprises:

a first guide feature movably received in the first opening and attached to the latch; and

a second guide feature movably received in the second opening and attached to the latch, wherein movement of the ejector toward the proximal end portion of the frame drives a portion of the biasing member against the first guide feature, causing the latch to pivot about the second guide feature.

5. The latch assembly of claim 1 wherein the biasing member includes a torsion spring having a first end portion spaced apart from a second end portion, and wherein the first end portion is biased against a portion of the latch and the second end portion is biased against a portion of the ejector.

6. The latch assembly of claim 1 wherein the biasing member is a first biasing member, and wherein the latch assembly further comprises a second biasing member operably coupled between the frame and the latch and biasing the latch toward the proximal end portion of the frame.

7. The latch assembly of claim 1 wherein the biasing member is a first biasing member, and wherein the latch assembly further comprises a second biasing member operably coupled between the frame and the latch and biasing the latch toward the proximal end portion of the frame, wherein movement of the ejector toward the proximal end portion of the frame drives the first biasing member against the latch, causing the latch to pivot about the first pivot point and overcome tension in the second biasing member.

8. The latch assembly of claim 1, further comprising a release actuator operably coupled to the latch, wherein movement of the release actuator from a first actuator position toward a second actuator position rotates the latch about the second pivot point, and wherein continued movement of the release actuator from the second actuator position toward a third actuator position rotates the latch about the first pivot point.

9. The latch assembly of claim 1, further comprising a release actuator operably coupled to the latch, wherein movement of the release actuator toward the proximal end portion of the frame rotates the latch about the second pivot point, and wherein continued movement of the release actuator toward the proximal end portion of the frame rotates the latch about the first pivot point.

10. A latch assembly for releasably securing a child seat to an anchor in a vehicle, the latch assembly comprising:

a frame having a proximal end portion and a distal end portion, wherein the distal end portion of the frame at least partially defines a first jaw, and wherein the frame further includes a first opening and a second opening;

a latch having a proximal end portion and a distal end portion, wherein the distal end portion of the latch at least partially defines a second jaw, and wherein the latch further includes a first guide feature and a second guide feature, wherein the first guide feature is movably received in the first opening of the frame and the second guide feature is movably received in the second opening of the frame; and

an anchor ejector operably coupled to the frame between the first and second jaws, wherein movement of the ejector toward the proximal end portion of the frame causes the second jaw to move toward the first jaw as the latch pivots about a first pivot point and then a second pivot point spaced apart from the first pivot point.

11. The latch assembly of claim 10 wherein the first and second jaws at least partially define a mouth, and wherein the anchor ejector is slidably coupled to the frame within the mouth.

12. The latch assembly of claim 10 wherein the first and second jaws at least partially define a mouth, and wherein the anchor ejector includes a bearing surface facing outwardly from the mouth and configured to be depressed by the anchor.

13. The latch assembly of claim 10, further comprising a biasing member having a first end portion spaced apart from a second end portion, wherein the first end portion biases the first guide feature toward the distal end portion of the frame, and wherein the second end portion biases the anchor ejector toward the distal end portion of the frame.

14. The latch assembly of claim 10, further comprising a release actuator operably coupled to the latch, wherein movement of the release actuator from a first actuator position toward a second actuator position rotates the latch about the second pivot point, and wherein continued movement of the release actuator from the second actuator position toward a third actuator position causes the second jaw to move away from the first jaw as the latch rotates about the second pivot point.

15. The latch assembly of claim 10 wherein the proximal end portion of the frame includes an aperture configured to receive a portion of a web, and wherein the latch assembly further comprises:

a housing at least partially covering the frame and at least partially defining a mouth proximate the distal end portion of the frame;

a first biasing member operably coupled between latch and the anchor ejector, wherein the first biasing member biases the anchor ejector away from the mouth, and wherein the first biasing member also biases the second jaw toward the first jaw;

a second biasing member operably coupled between the frame and the latch, wherein the second biasing member biases the second jaw away from the first jaw; and

a release actuator having a distal end portion operably coupled to the latch and a proximal end portion accessible from outside the housing, wherein movement of the release actuator from a first actuator position toward a second actuator position rotates the latch about the second pivot point, and wherein continued movement of the release actuator from the second actuator position toward a third actuator position causes the second jaw to move away from the first jaw as the latch rotates about the second pivot point.

16. A latch system for releasably coupling a web to an anchor in a vehicle, the latch system comprising:

a frame having a proximal end portion for receiving the web and a distal end portion for receiving the anchor;

a latch movably coupled to the frame toward the distal end portion;

means for holding the latch in an open position prior to engaging the latch system with the anchor; and

means for coupling the latch system to the anchor by;

pivoting the latch about a first axis; and

pivoting the latch about a second axis spaced apart from the first axis to move the latch to a closed position about the anchor.

17. The latch system of claim 16, further comprising means for releasing the latch system from the anchor by:

pivoting the latch about the second axis; and

pivoting the latch about the first axis to move the latch to the open position.

18. The latch system of claim 17 wherein the means for releasing the latch system includes a flexible strap.

19. The latch system of claim 16 wherein the means for coupling the latch system to the anchor includes an ejector member that contacts the anchor and drives a biasing member against the latch.

20. The latch system of claim 16 wherein the means for coupling the latch system to the anchor includes an ejector member that contacts the anchor and drives an end portion of a torsion spring against the latch to pivot the latch about the first axis and the second axis.