Vehicle and a locking assembly for a seat belt

• US 9,139,159 B1
• Filed: 07/22/2014
• Issued: 09/22/2015
• Est. Priority Date: 07/22/2014
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Strnad, George J., Richter, Steven J., Gohlke, Matt R.
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): Condra, Darlene P
• Application Number:
  US14/337,517
• Time in Patent Office: 427 Days
• US Class Current: 1/1
• CPC Class Codes: B60R 22/00 Safety belts or body harnesses in vehicles safety belts or body harnesses in general A62B35/00
• CPC Class Codes: B60R 22/185 with stopping means for acting directly upon the belt in an emergency, e.g. by clamping or friction B60R22/195 takes precedence; combined with the retractor B60R22/42
• CPC Class Codes: B60R 22/30 Coupling devices other than buckles, including length-adjusting fittings or anti-slip devices adaptations of manual three-point seat belt systems for use by small passengers using other means than belt anti-slip devices B60R22/024; buckles A44B11/00; releasable fastenings in general F16B

Abstract

A vehicle and a locking assembly for a seat belt are disclosed. A strap is disposed between a locking member and an engagement surface of a support. The strap is spaced from the engagement surface when the locking member is in an initial position. The strap engages the engagement surface when the locking member is in a transitional position to apply a variable load to the strap. The strap engages the engagement surface when the locking member is in a final position to apply a final load to the strap. At least one of the support and the locking member includes a device that restricts rotation of the locking member to limit the final load applied to the strap when the locking member is in the final position such that the strap is movable relative to the locking member when a force applied to the strap exceeds the final load.

Claims

1. A locking assembly for a seat belt;

the assembly comprising;

a support including an engagement surface;

a locking member coupled to the support proximal to the engagement surface, with the locking member rotatable between an initial position, a transitional position and a final position;

a strap disposed between the locking member and the engagement surface of the support, wherein the strap is spaced from the engagement surface when the locking member is in the initial position, wherein the strap engages the engagement surface when the locking member is in the transitional position to apply a variable load to the strap, and wherein the strap engages the engagement surface when the locking member is in the final position to apply a final load to the strap; and

wherein at least one of the support and the locking member includes a device that restricts rotation of the locking member to limit the final load applied to the strap when the locking member is in the final position such that the strap is movable relative to the locking member when a force applied to the strap exceeds the final load.

2. An assembly as set forth in claim 1 wherein the device includes an abutment disposed on one of the support and the locking member and the device includes an arm extending from the other one of the support and the locking member, with the arm being rotatable to selectively engage the abutment.

3. An assembly as set forth in claim 2 wherein the abutment is disposed on the support and the arm extends from the locking member.

4. An assembly as set forth in claim 2 wherein the arm includes a periphery selectively engaging the abutment.

5. An assembly as set forth in claim 4 wherein the support defines an aperture and has an inner wall disposed adjacent to the aperture, with a portion of the inner wall presenting the abutment, and wherein at least a portion of the periphery is disposed in the aperture such that the inner wall encircles a portion of the arm.

6. An assembly as set forth in claim 5 wherein the inner wall includes a first segment presenting a substantially circular configuration and a second segment including the abutment.

7. An assembly as set forth in claim 4 wherein the abutment includes a first stop surface and a second stop surface spaced from each other, with the periphery engaging the first stop surface when in the initial position and engaging the second stop surface when in the final position, and with the periphery spaced from the first stop surface and the second stop surface when in the transitional position.

8. An assembly as set forth in claim 7 wherein the periphery includes a first edge and a second edge spaced from and opposing the first edge, with the first edge engaging the first stop surface when in the initial position and the second edge engaging the second stop surface when in the final position.

9. An assembly as set forth in claim 2 further including a biasing member coupled to the arm of the locking member and engaging the support to continuously bias the locking member to the initial position.

10. An assembly as set forth in claim 9 wherein the arm includes a stem extending outwardly from the locking member to a distal end, wherein the arm includes a projection extending outwardly from the distal end, wherein the biasing member is disposed about the stem.

11. An assembly as set forth in claim 10 wherein the support defines an aperture and has an inner wall disposed adjacent to the aperture, with a portion of the inner wall presenting the abutment, and wherein the projection is disposed in the aperture such that the projection selectively engages the abutment.

12. An assembly as set forth in claim 2 wherein the locking member includes a body having an outer surface, with at least a portion of the outer surface being arcuate, and wherein the body includes a first side and a second side spaced from each other, with the arm extending from one of the first side and the second side.

13. An assembly as set forth in claim 1 wherein the locking member includes a body having an outer surface being eccentric.

14. An assembly as set forth in claim 1 wherein the engagement surface is substantially flat.

15. An assembly as set forth in claim 1 wherein the engagement surface is arcuate.

16. An assembly as set forth in claim 1 wherein the device includes a plurality of abutments disposed on one of the support and the locking member and the device includes a plurality of arms extending from the other one of the support and the locking member, with the arms being rotatable to selectively engage respective abutments.

17. A vehicle comprising:

a structural frame including a side and a base;

a seat including a bottom portion attached to the base of the structural frame and a back portion extending upwardly away from the bottom portion to a seat end;

a locking assembly comprising;

a support attached to the side of the structural frame proximal to the seat end of the seat, with the support including an engagement surface;

a locking member coupled to the support proximal to the engagement surface, with the locking member rotatable between an initial position, a transitional position and a final position;

a strap disposed between the locking member and the engagement surface of the support, wherein the strap is spaced from the engagement surface when the locking member is in the initial position, wherein the strap engages the engagement surface when the locking member is in the transitional position to apply a variable load to the strap, and wherein the strap engages the engagement surface when the locking member is in the final position to apply a final load to the strap; and

wherein at least one of the support and the locking member includes a device that restricts rotation of the locking member to limit the final load applied to the strap when the locking member is in the final position such that the strap is movable relative to the locking member when a force applied to the strap exceeds the final load.

18. A vehicle as set forth in claim 17 further including a buckle coupled to the base of the structural frame and disposed proximal to the bottom portion of the seat, and further including a latch coupled to the strap and selectively engaging the buckle, with the latch movable along the strap.

19. A vehicle as set forth in claim 18 wherein the device includes an abutment disposed on the support and the device includes an arm extending from the locking member, with the arm being rotatable to selectively engage the abutment.

20. A vehicle as set forth in claim 19 wherein the arm includes a periphery selectively engaging the abutment and wherein the abutment includes a first stop surface and a second stop surface spaced from each other, with the periphery engaging the first stop surface when in the initial position and engaging the second stop surface when in the final position, and with the periphery spaced from the first stop surface and the second stop surface when in the transitional position.