Assembly formed from a cover cap of a diffuser of a piped gas generator and a deflector element, piped gas generator, and method for producing a piped gas generator

Patent metadata

Field	Value
Publication number	US-11987199-B2
Application number	US-202017637483-A
Country	US
Kind code	B2
Filing date	Aug 18, 2020
Priority date	Aug 27, 2019
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

In an assembly group (12) consisting of a cap (14) of a diffusor of a tubular gas generator (10) and a deflector element (16), the cap (14) comprises an outflow opening for gas generated by the tubular gas generator (10) and the deflector element (16) comprises a discharge portion (34) having at least one discharge opening (42b) through which gas exits the cap (14). The deflector element (16) is inserted into the outflow opening so that the discharge portion (34) protrudes laterally outwardly through the outflow opening, projects there from the cap (14), and an edge portion of the deflector element (16) abuts on an edge of the outflow opening at an inner face of a wall of the cap (14). The discharge portion (34) of the deflector element (16) is pushed from an interior of the cap (14) through the outflow opening until the edge portion abuts on the inner face of the edge of the outflow opening, and subsequently the cap (14) is firmly fixed to the tubular gas generator (10).

First claim

The invention claimed is:

1. An assembly group comprising a cap configured to cover a diffusor of a tubular gas generator and a deflector element, wherein the cap is configured to create a space between an inner face of a wall of the cap and the diffusor, wherein the cap comprises an outflow opening for gas generated by the tubular gas generator and the deflector element comprises a discharge portion having at least one discharge opening through which the gas leaves the cap, wherein the deflector element is inserted into the outflow opening such that the discharge portion protrudes laterally outwardly through the outflow opening, projects from the cap, and an edge portion of the deflector element abuts at an edge of the outflow opening on the inner face of the wall of the cap, wherein a rattle protection is provided at the deflector element, the rattle protection being formed by a radial projection on the edge portion which is provided for abutting on an outer circumference of the tubular gas generator and/or is biased to press against the tubular gas generator.

2. The assembly group according to claim 1 , wherein the discharge portion is pot-shaped and the edge portion is disposed at a cap-side edge of the discharge portion, while the at least one discharge opening is provided in a sidewall of the discharge portion.

3. The assembly group according to claim 1 , wherein the deflector element is a one-piece component part separate from the cap.

4. The assembly group according to claim 1 , wherein the deflector element is pushed from the inner face of the cap through the outflow opening.

5. The assembly group according to claim 1 , wherein a positioning structure which permits mounting of the deflector element on the cap only in a predetermined orientation is provided at the cap and at the deflector element.

6. The assembly group according to claim 1 , wherein the deflector element comprises two oppositely directed discharge openings.

7. The assembly group according to claim 6 , wherein the two discharge openings have different cross-sectional areas.

8. The assembly group according to claim 1 , wherein the at least one discharge opening points along an axial direction of the tubular gas generator.

9. A tubular gas generator comprising a thrust-neutral diffusor provided at an axial end and having a plurality of gas outlet openings on a circumferential wall of the diffusor, and comprising an assembly group according to claim 1 , wherein the cap is slipped over the diffusor and a collection chamber through which the gas flows to the deflector element is formed between the diffusor and the cap.

10. A method for manufacturing a tubular gas generator according to claim 9 , comprising the following steps:
the discharge portion of the deflector element is pushed from an interior of the cap through the outflow opening until the edge portion abuts on the inner face of the edge of the outflow opening, and
subsequently the cap is firmly fixed to the tubular gas generator.

11. An assembly group comprising a cap configured to cover a diffusor of a tubular gas generator and a deflector element, wherein the cap is configured to create a space between an inner face of a wall of the cap and the diffusor, wherein the cap comprises an outflow opening for gas generated by the tubular gas generator and the deflector element comprises a discharge portion having at least one discharge opening through which the gas leaves the cap, wherein the deflector element is inserted into the outflow opening such that the discharge portion protrudes laterally outwardly through the outflow opening, projects from the cap, and an edge portion of the deflector element abuts at an edge of the outflow opening on the inner face of the wall of the cap, wherein the deflector element comprises two oppositely directed discharge openings having different cross-sectional areas.

Assignees

• Zf Automotive Germany Gmbh

Inventors

• Disam Robert

Classifications

• B60R21/261 Primary

  with means other than bag structure to diffuse or guide inflation fluid · CPC title

• B60R2021/2617

  Curtain bag nozzles · CPC title