Seatbelt buckle apparatuses including switch wire harnesses and strain relief thereof

Patent metadata

Field	Value
Publication number	US-9707927-B1
Application number	US-201615060138-A
Country	US
Kind code	B1
Filing date	Mar 3, 2016
Priority date	Mar 3, 2016
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A seatbelt buckle apparatus for a motor vehicle is provided. The apparatus includes a buckle housing that provides at least part of a structure for selectively coupling a seatbelt latch plate to the apparatus. A switch housing houses at least part of a switch. The switch monitors whether or not the seatbelt latch plate is coupled to the seatbelt buckle apparatus. A switch wire harness is in communication with the switch. A strain relief-guide feature carries and guides a section of the switch wire harness so as to provide strain relief to the switch wire harness when a force is applied to the switch wire harness downstream from the strain relief-guide feature.

First claim

The invention claimed is:

1. A seatbelt buckle apparatus for a motor vehicle, comprising:
a cover defining an inlet and an outlet;
a buckle housing at least partially covered by the cover and configured to provide at least part of a structure for selectively coupling a seatbelt latch plate received through the inlet to the seatbelt buckle apparatus;
a projection feature projecting from or adjacent to the buckle housing;
a switch housing disposed adjacent to the buckle housing spaced apart from the projection feature;
a switch disposed at least in part in and/or on the switch housing and configured to monitor whether the seatbelt latch plate is coupled or not coupled to the seatbelt buckle apparatus;
a switch wire harness in communication with the switch and extending from the switch housing through and pass the outlet; and
a strain relief-guide feature that is spaced apart from the switch housing and that carries and/or guides a section of the switch wire harness so as to provide strain relief to the switch wire harness between the strain relief-guide feature and the switch housing when a force is applied to the switch wire harness downstream from the strain relief-guide feature, wherein the strain relief-guide feature is part of a wire harness guide structure that is mounted on the projection feature or is defined at least in part by the cover.

2. The seatbelt buckle apparatus of claim 1 , wherein the seatbelt buckle apparatus comprises the wire harness guide structure that comprises the strain relief-guide feature, wherein the wire harness guide structure comprises a plate section that is coupled to the strain relief-guide feature and that has an opening formed therethrough, and wherein the projection feature extends through the opening of the plate section.

3. The seatbelt buckle apparatus of claim 2 , wherein the projection feature has an arcuate sidewall and the plate section has an inner perimeter edge portion substantially matching and interfacing with the arcuate sidewall of the projection feature.

4. The seatbelt buckle apparatus of claim 3 , further comprising a cable that is operatively coupled to the projection feature and extends from the projection feature through and pass the outlet.

5. The seatbelt buckle apparatus of claim 4 , wherein the wire harness guide structure overlies the cable that overlies at least an adjacent portion of the buckle housing.

6. The seatbelt buckle apparatus of claim 5 , wherein the wire harness guide structure has a lower surface that is disposed adjacent to the cable and an upper surface on a side opposite the lower surface, and wherein the section of the switch wire harness is disposed adjacent to the upper surface of the wire harness guide structure.

7. The seatbelt buckle apparatus of claim 2 , wherein the buckle housing has a housing base section and a first housing wall section extending generally upwardly from a first edge of the housing base section and a second housing wall section extending generally upwardly from a second edge of the housing base section that is opposite the first edge, and wherein the wire harness guide structure is disposed over the housing base section and between the first and second housing wall sections.

8. The seatbelt buckle apparatus of claim 7 , wherein the plate section of the wire harness guide structure has a front portion disposed adjacent to the inlet and a back portion opposite the front portion and adjacent to the outlet, and wherein the strain relief-guide feature is coupled to the back portion of the plate section.

9. The seatbelt buckle apparatus of claim 8 , wherein the switch housing is disposed on the second wall section of the buckle housing spaced apart and laterally adjacent to the strain relief-guide feature and/or the back portion of the plate section.

10. The seatbelt buckle apparatus of claim 8 , wherein the plate section has a first anti-rotation tab formed between the front and back portions of the plate section and extending towards the first housing wall section, and wherein the first anti-rotation tab has a first outer edge that interfaces with the first housing wall section to facilitate preventing the wire harness guide structure from rotating relative to the projection feature.

11. The seatbelt buckle apparatus of claim 10 , wherein the plate section has a second anti-rotation tab formed between the front and back portions of the plate section opposite the first anti-rotation tab and extending towards the second housing wall section, and wherein the second anti-rotation tab has a second outer edge that interfaces with the second housing wall section to facilitate preventing the wire harness guide structure from rotating relative to the projection feature.

12. The seatbelt buckle apparatus of claim 1 , wherein the seatbelt buckle apparatus comprises the wire harness guide structure that comprises the strain relief-guide feature, and wherein the wire harness guide structure comprises:
a plate section; and
a tab section integrally formed with and extending from the plate section, wherein the strain relief-guide feature is mounted on the tab section and is configured as a clip.

13. A seatbelt buckle apparatus for a motor vehicle, comprising:
a cover defining an inlet and an outlet;
a buckle housing at least partially covered by the cover and configured to provide at least part of a structure for selectively coupling a seatbelt latch plate received through the inlet to the seatbelt buckle apparatus;
a projection feature projecting from or adjacent to the buckle housing;
a switch housing disposed adjacent to the buckle housing spaced apart from the projection feature;
a switch disposed at least in part in and/or on the switch housing and configured to monitor whether the seatbelt latch plate is coupled or not coupled to the seatbelt buckle apparatus;
a switch wire harness in communication with the switch and extending from the switch housing through and pass the outlet; and
a wire harness guide structure mounted on the projection feature spaced apart from the switch housing and comprising a plate section and a strain relief-guide feature integrally formed with the plate section, wherein the strain relief-guide feature carries and guides a section of the switch wire harness so as to provide strain relief to the switch wire harness between the strain relief-guide feature and the switch housing when a force is applied to the switch wire harness downstream from the strain relief-guide feature.

14. The seatbelt buckle apparatus of claim 13 , wherein the plate section of the wire harness guide structure has a front portion disposed adjacent to the inlet and a back portion opposite the front portion and adjacent to the outlet, and wherein the strain relief-guide feature extends from the back portion of the plate section to define a longitudinal axis.

15. The seatbelt buckle apparatus of claim 14 , wherein the strain relief-guide feature in an un-crimped condition has a generally C-shaped cross-section substantially parallel to the longitudinal axis, and wherein the strain relief-guide feature is in a crimped condition or the un-crimped condition.

16. The seatbelt buckle apparatus of claim 14 , wherein the strain relief-guide feature in an un-crimped condition has a generally L-shaped cross-section substantially parallel to the longitudinal axis, and wherein the strain relief-guide feature is in a crimped condition or the un-crimped condition.

17. The seatbelt buckle apparatus of claim 14 , wherein the strain relief-guide feature in an un-crimped condition has a generally U-shap

Assignees

• Autoliv Asp Inc

Inventors

• Boughner Jonathon
• Burrow Jon E
• Dewey Kevin

Classifications

• B60R2022/4816

  for sensing locking of buckle · CPC title

• B60R2022/4858

  for sensing pressure on seat · CPC title

• H01H1/42

  Knife-and-clip contacts · CPC title

• B60R22/48 Primary

  Control systems, alarms, or interlock systems, for the correct application of the belt or harness · CPC title

• B60R22/00

  Safety belts or body harnesses in vehicles (safety belts or body harnesses in general A62B35/00) · CPC title