Attachment interface for a pyrotechnic actuator

Patent metadata

Field	Value
Publication number	US-9676360-B2
Application number	US-201415030267-A
Country	US
Kind code	B2
Filing date	Oct 24, 2014
Priority date	Oct 25, 2013
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A safety module for a motor vehicle includes at least one inflatable cushion with a first fixation interface and at least one actuating device. The at least one actuating device includes an igniter and an igniter support. The igniter has a plastic overmolding forming a second fixation interface. The igniter support has a third fixation interface designed to receive and fix the second fixation interface. The at least one actuating device retains the first fixation interface by sandwiching it between at least one part of the second fixation interface and at least one part of the third fixation interface.

First claim

The invention claimed is:

1. A safety module for a motor vehicle, the safety module comprising:
at least one inflatable cushion with a first fixation interface; and
at least one actuating device including:
an igniter with a plastic overmoulding forming a second fixation interface; and
an igniter support with a third fixation interface designed to receive and fix the second fixation interface;
wherein the at least one actuating device retains the first fixation interface by sandwiching the first fixation interface between at least one part of the second fixation interface and at least one part of the third fixation interface.

2. The safety module according to the claim 1 , wherein the at least one actuating device includes a projecting fourth fixation interface receiving at least one eyelet formed in the first fixation interface.

3. The safety module according to claim 2 , wherein the eyelet is mounted tightly on the fourth fixation interface.

4. The safety module according to claim 1 , further comprising:
an airbag with a vent; and
a linkage connecting the inflatable cushion and the vent.

5. The safety module according to claim 4 , wherein the linkage connected to the inflatable cushion keeps the vent closed, the linkage operative to detach from the inflatable cushion when the inflatable cushion is inflated, and wherein the igniter inflates the inflatable cushion.

6. The safety module according to claim 5 , wherein the linkage is connected to the inflatable cushion by a meltable seam.

7. The safety module according to claim 4 , wherein the igniter has a direct communication with the inflatable cushion.

8. The safety module according to claim 1 , wherein the second fixation interface is adapted to be clipped on the igniter support.

9. The safety module according to claim 8 , wherein the second fixation interface includes at least one deformable part elastically deformable during mounting of the igniter on the igniter support and operative to elastically return to a blocking position against the igniter support when the igniter is in mounted position for preventing any withdrawal of the igniter.

10. The safety module according to claim 9 , wherein:
the igniter support includes a checking opening; and,
the deformable part includes a male part having a first part facing the checking opening when the deformable part has passed into the blocking position.

11. The safety module according to claim 10 , wherein the male part further includes a second part with a greater area than the first part, the second part facing the checking opening when the igniter is in an inserted position with the deformable part remaining deformed.

12. The safety module according to claim 1 , further comprising a casing and wherein the igniter support is a part of the casing.

13. The safety module according to claim 1 , in combination with a motor vehicle.

14. The safety module according to claim 1 , wherein the third fixation interface includes a fixation orifice, the first fixation interface inserted into the orifice.

15. The safety module according to claim 1 , wherein the first interface includes a first tongue carrying a first eyelet and a second tongue carrying a second eyelet.

16. The safety module according to claim 15 , wherein the igniter support further includes a fourth interface having first and second indexes receiving the first and second eyelets of the first interface.

17. A safety module for a motor vehicle, the safety module comprising:
at least one inflatable cushion with a first fixation interface; and
at least one actuating device including:
an igniter with a plastic overmoulding forming a second fixation interface; and
an igniter support with a third fixation interface designed to receive and fix the second fixation interface;

wherein the at least one actuating device retains the first fixation interface by sandwiching the first fixation interface between at least one part of the second fixation interface and at least one part of the third fixation interface, and
wherein the third fixation interface includes a fixation orifice, the first fixation interface includes at least one tongue of the inflatable cushion, and the at least one tongue is inserted into the fixation orifice of the igniter support.

18. A safety module for a motor vehicle the safety module comprising:
at least one inflatable cushion with a first fixation interface; and
at least one actuating device including:
an igniter with a plastic overmoulding forming a second fixation interface; and

an igniter support with a third fixation interface designed to receive and fix the second fixation interface;
wherein the at least one actuating device retains the first fixation interface sandwiching the first fixation interface between at least one part of the second fixation interface and at least one part of the third fixation interface; and
wherein the igniter has an axial direction, a fourth fixation interface formed by two indexes arranged in an asymmetric manner relative to the axial direction of the igniter so as to provide an angular keyway between the igniter and the igniter support, and wherein the first fixation interface includes two eyelets, each eyelet mounted on a respective one of the two indexes.

19. A safety module for a motor vehicle, the safety module comprising:
an inflatable cushion with a first fixation interface including a first tongue carrying a first eyelet and a second tongue carrying a second eyelet; and
an actuating device including:
an igniter having a second fixation interface; and
an igniter support with a third fixation interface designed to receive and fix the second fixation interface, the third fixation interface including a fixation orifice receiving a least one of the first and second tongues.

20. The safety module according to claim 19 , wherein the igniter support further includes a fourth interface having first and second indexes receiving the first and second eyelets of the first interface.

Assignees

• Autoliv Dev

Inventors

• Weber Marcus
• Nebel Raimund
• Biberger Johann
• Haas Martin
• Peiz Roland

Classifications

• B60R2021/23384

  having ends which are movable or detachable during deployment · CPC title

• B60R2021/2395

  comprising means to control the venting · CPC title

• B60R21/264

  using instantaneous generation of gas, e.g. pyrotechnic (B60R21/268 takes precedence) · CPC title

• B60R21/2338

  Tethers · CPC title

• B60R21/217 Primary

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