Ring bracket for snap-lock engagement verification

Patent metadata

Field	Value
Publication number	US-9789836-B2
Application number	US-201514842393-A
Country	US
Kind code	B2
Filing date	Sep 1, 2015
Priority date	Sep 1, 2015
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A number of variations may include a method to verify engagement between a passenger airbag module and an instrument panel chute comprising: providing a passenger airbag module with a plurality of snap-locks and an instrument panel chute with a plurality of chute tabs; pressing the passenger airbag onto the instrument panel chute so that the plurality of snap-locks engage with the plurality of chute tabs; placing a ring bracket around the plurality of snap-locks and the plurality of chute tabs and attaching the ring bracket to the passenger airbag using a first screw and a second screw to verify whether the plurality of snap-locks are engaged with the chute tabs.

First claim

What is claimed:

1. A method to verify engagement between a passenger airbag module and an instrument panel chute comprising:
providing a passenger airbag module with a plurality of snap-locks and an instrument panel chute with a plurality of chute tabs;
pressing the passenger airbag module onto the instrument panel chute so that the plurality of snap-locks engage with the plurality of chute tabs; and
placing a ring bracket around the plurality of chute tabs and the plurality of snap-locks and attaching the ring bracket to the passenger airbag module using a first screw and a second screw to verify whether the plurality of snap-locks are engaged with the plurality of chute tabs.

2. The method of claim 1 further comprising an assembly station having an electronic control unit which receives signals from one or more sensors to determine at least one of whether the first screw and the second screw are present in the ring bracket and the passenger airbag module or a torque of the first screw and the second screw.

3. The method of claim 2 further comprising recording at least one of the presence of the first screw and the second screw or the torque of the first screw and the second screw using the electronic control unit.

4. A method to verify passenger airbag module to instrument panel chute snap-lock engagement comprising:
snap-fitting a passenger airbag module with an instrument panel chute using a plurality of snap-locks and a plurality of tabs;
placing a ring bracket around an outer perimeter of the passenger airbag module and the instrument panel chute along at least a portion of the plurality of snap-locks and the plurality of tabs, wherein if the plurality of snap-locks and the plurality of tabs are fully engaged, then the ring bracket fully seats against a lip on the instrument panel chute and if at least one of the plurality of snap-locks and at least one of the plurality of tabs are not fully engaged the ring bracket is not fully seated against the lip on the instrument panel chute;
screwing a first screw and a second screw through the ring bracket into the passenger airbag module; and
wherein if the ring bracket is fully seated against the instrument panel chute, the first screw and the second screw are torqued to a predetermined range and if the ring bracket is not fully seated against the instrument panel chute, at least one of the first screw or the second screw cannot be torqued to the predetermined range.

5. The method of claim 4 wherein the ring bracket includes a minimal radius on an inner surface of the ring bracket preventing lead-in at a snap-fit interface between the passenger airbag and the instrument panel chute.

6. The method of claim 4 further comprising providing a minimum clearance between the ring bracket and a snap-fit engagement area of the passenger airbag and the instrument panel chute to detect a misalignment or disengagement of the passenger airbag module and the instrument panel chute.

7. The method of claim 4 further comprising providing the ring bracket and the instrument panel chute each with a first and a second opening for the first and the second screw defined by a first and a second inner surface, and wherein the first and the second opening have a minimum diameter clearance preventing off-axis installation of the first and the second screw.

8. The method of claim 4 further comprising using an automated control system to detect at least one of the presence of the first screw and the second screw or a torque of the first screw and the second screw, and wherein the automated control system comprises at least one sensor operatively connected to an electronic control unit.

9. The method of claim 8 further comprising recording at least one of the presence of the first and the second screw or the torque of the first and the second screw with the automated control system.

10. A product comprising:
a ring bracket comprising a front portion, a rear portion, a first side portion, a second side portion, an inner surface, an outer surface, a top surface, and a bottom surface, wherein the first side portion includes a first opening defined by a surface of the first side portion which extends through the top surface to the bottom surface and the second side portion includes a second opening defined by a surface of the second side portion which extends through the top surface to the bottom surface;
wherein the inner surface of the ring bracket is constructed and arranged to contour an outer perimeter of a passenger airbag module and instrument panel chute assembly engagement area;
a passenger airbag module having a plurality of snap-locks;
an instrument panel chute having a plurality of chute tabs;
wherein the plurality of chute tabs and the plurality of snap-locks are snap-fit together;
wherein the ring bracket surrounds an engagement area between the plurality of chute tabs and the plurality of snap-locks; and
wherein a first screw extends through a first end of the ring bracket and the passenger airbag module and a second screw extends through a second end of the ring bracket and the passenger airbag module.

11. The product of claim 10 wherein the ring bracket is rounded.

12. The product of claim 10 wherein the ring bracket comprises at least one of an L-shape, a T-shape, a U-shape, or a Z-shaped cross-section.

13. The product of claim 10 further comprising one or more lightening holes.

14. The product of claim 10 wherein the ring bracket comprises a plastic.

15. The product of claim 10 wherein the ring bracket is injection molded.

16. The product of claim 10 wherein the ring bracket comprises an I-beam geometry.

17. The product of claim 16 wherein the ring bracket further comprises a plurality of w-ribs.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Byers Charles P

Classifications

• B60R21/20

  Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components · CPC title

• B60R21/217

  Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together · CPC title

• B60R21/205 Primary

  in dashboards · CPC title