Inflatable cushion assembly

• US 5,454,588 A
• Filed: 08/12/1994
• Issued: 10/03/1995
• Est. Priority Date: 08/12/1994
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Rose, Larry D.
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US08/289,868
• Time in Patent Office: 417 Days
• Field of Search: 280/728.2, 280/743.1, 280/732
• US Class Current: 280/728.2
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence

Abstract

The present invention provides an improved inflatable cushion assembly and method for coupling an inflatable cushion (12) to a reaction housing (16) in an inflatable restraint system. The assembly utilizes various arrangements of a flanged strip inserted into a channel member (36) disposed about the gas inlet opening (30) of the cushion (12) to form a flanged cushion insert (7,8). The flanges of the cushion insert retain the strip (42) in the channel member (36), and are used in the assembly process to couple the flanged cushion insert, in a fastenerless manner, either to a cushion retainer member (14), which in turn is coupled with the reaction housing (16), or directly to the reaction housing (16).

Claims

1. An inflatable cushion assembly for coupling an inflatable cushion within an inflatable restraint system comprising:

a) an inflatable cushion including a gas inlet opening and at least one channel member disposed about the gas inlet opening;

b) at least one elongate strip disposed within the channel member; and

c) means for retaining the strip within the channel member including at least one flange fixedly disposed about the strip and communicating with the channel member.

2. The assembly defined by claim 1 wherein the means for retaining the strip within the channel member includes at least one of the flanges fixedly disposed about the strip and engaged with a corresponding opening provided in the channel member such that the flange is substantially exposed exteriorly thereof, the flange being configured to be slidably received within the channel member.

3. The assembly defined by claim 2 wherein a plurality of the flanges are fixedly disposed about said elongate strip and engaged with a corresponding number of the openings provided in the channel member such that the flanges are substantially exposed exteriorly of said channel member to retain the strip therein.

4. The assembly defined by claim 2 wherein the means for retaining the strip within the channel member additionally includes one of the flanges disposed about each end of the elongate strip such that the channel member is disposed therebetween.

5. The assembly defined by claim 2 wherein the means for retaining the strip within the channel member additionally includes an end cap mounted to each end of the elongate strip, each said cap including one of the flanges mounted thereto such that the channel member is disposed therebetween.

6. The assembly defined by claim 1 wherein the means for retaining the strip within the channel member includes one of the flanges disposed about each end of the strip such that the channel member is proximate to said flanges and retained therebetween.

7. The assembly defined by claim 1 wherein the means for retaining the strip within the channel member includes at least two end caps each having the flange mounted thereto, each said cap being mounted to an associated end of the elongate strip such that the channel member is proximate to said flanges and retained therebetween.

8. The assembly defined by claim 1 wherein the flange and strip are monolithic.

9. The assembly defined by claim 1 wherein the flange is of a deformable consistency.

10. The assembly defined by claim 1 wherein the flange is of a resilient consistency.

11. The assembly defined by claim 1 wherein the channel member is in the form of a hem constructed from the material of the gas inlet opening of the inflatable cushion.

12. An inflatable cushion assembly for coupling an inflatable cushion within an inflatable restraint system comprising;

a) an inflatable cushion including a gas inlet opening and at least one channel member disposed about the gas inlet opening;

b) at least one elongate strip disposed in the channel member;

c) means for retaining the strip within the channel member including at least one flange fixedly disposed about the strip and communicating with the channel member, wherein the channel member, elongate strip and means for retaining the strip within the channel member define a flanged cushion insert; and

d) a cushion retainer member including at least one channel portion for receiving and securing the flanged cushion insert therein to form a cushion retainer insert for coupling the flanged cushion insert within the inflatable restraint system.

13. The assembly defined by claim 12 wherein the flange is engaged with a corresponding opening provided in the channel member such that the flange is substantially exposed exteriorly thereof and is configured to be slidably received in the channel member.

14. The assembly defined by claim 13 wherein a plurality of the flanges are fixedly disposed about said elongate strip and engaged with a corresponding number of the openings provided in the channel member such that the flanges are substantially exposed exteriorly of the channel member to retain the strip therein.

15. The assembly defined by claim 13 wherein the means for retaining the strip within the channel member additionally includes one of the flanges disposed about each end of the elongate strip such that the channel member is disposed therebetween.

16. The assembly defined by claim 13 wherein the means for retaining the strip within the channel member additionally includes a cap mounted to each end of the elongate strip, each said cap including one of the flanges mounted thereto such that the channel member is disposed therebetween.

17. The assembly defined by claim 12 wherein the means for retaining the strip within the channel member includes one of the flanges disposed about each end of the strip such that the channel member is proximate to said flanges and retained therebetween.

18. The assembly defined by claim 12 wherein the means for retaining the strip within the channel member includes a cap mounted to each end of the elongate strip, each said cap including the flange mounted thereto such that the channel member is proximate to said flanges and retained therebetween.

19. The assembly defined by claim 12 wherein the flange and strip are monolithic.

20. The assembly defined by claim 12 wherein the flange is constructed of a deformable consistency.

21. The assembly defined by claim 12 wherein the channel member is in the form of a hem constructed from the material of the gas inlet opening of the inflatable cushion.

22. The assembly defined by claim 12 wherein the cushion retainer member includes a plurality of the channel portions for receiving and securing a corresponding number of the flanged inserts therein.

23. The assembly defined by claim 22 wherein the cushion retainer member includes first and second ones of the channel portions joined together in spaced apart relationship by at least one spacer member.

24. The assembly defined by claim 23 wherein the first and second channel portions are substantially parallel to each other and joined to each other adjacent the ends thereof by two spacer members.

25. A system for coupling an inflatable cushion to a reaction housing within an inflatable restraint system comprising:

a) an inflatable cushion including a gas inlet opening and at least one channel member disposed about the gas inlet opening;

b) at least one elongate strip disposed within the channel member;

c) means for retaining the strip within the channel member including at least one flange fixedly disposed about the strip and communicating with the channel member, wherein the channel member, elongate strip and means for retaining the strip within the channel member define a flanged cushion insert; and

d) a reaction housing comprising an attachment sleeve configured to receive the flanged cushion insert therein thereby coupling the flanged insert and inflatable cushion to the reaction housing.

26. The system defined by claim 25 wherein the flange is engaged with a corresponding opening provided in the channel member such that the flange is substantially exposed exteriorly thereof and is configured to be slidably received in the channel member.

27. The system defined by claim 26 wherein a plurality of the flanges are fixedly disposed about said elongate strip and engaged with a corresponding number of the openings provided in the channel member such that the flanges are substantially exposed exteriorly of said channel member to retain the strip therein.

28. The system defined by claim 26 wherein the means for retaining the strip within the channel member additionally includes one of the flanges disposed about each end of the elongate strip such that the channel member is disposed therebetween.

29. The system defined by claim 26 wherein the means for retaining the strip within the channel member additionally includes an end cap mounted to each end of the elongate strip, each said cap including one of the flanges mounted thereto such that the channel member is disposed therebetween.

30. The system defined by claim 25 wherein the means for retaining the strip within the channel member includes one of the flanges disposed about each end of the elongate strip such that the channel member is proximate to said flanges and retained therebetween.

31. The system defined by claim 25 wherein the means for retaining the strip within the channel member includes a cap mounted to each end of the elongate strip, each said cap including the flange mounted thereto such that the channel member is proximate to said flanges and retained therebetween.

32. The system defined by claim 25 wherein the flange and strip are monolithic.

33. The system defined by claim 25 wherein the flange is of a resilient consistency.

34. The system defined by claim 25 wherein the channel member is in the form of a hem constructed from the material of the gas inlet opening of the inflatable cushion.

35. The system defined by claim 25 wherein the attachment sleeve is monolithic with the reaction housing.

36. The system defined by claim 25 wherein the reaction housing includes a plurality of the attachment sleeves for receiving a corresponding number of the flanged cushion inserts therein.

37. The system defined by claim 36 wherein the reaction housing includes two of the attachment sleeves for receiving a corresponding number of the flanged cushion inserts therein.

38. The system defined by claim 25 further including a cushion retainer member that includes at least one channel portion for receiving and securing the flanged cushion insert therein, the channel portion and secured flanged cushion insert defining a cushion retainer insert which is configured for insertion within the attachment sleeve of the reaction housing to couple and secure the inflatable cushion to the reaction housing.

39. The system defined by claim 38 wherein the cushion retainer member includes a plurality of the channel portions for receiving and securing a corresponding number of the flanged cushion inserts therein to form a corresponding number of cushion retainer inserts.

40. The system defined by claim 39 wherein the cushion retainer member includes first and second ones of the channel portions joined together in spaced relationship by at least one spacer member.

41. The system defined by claim 40 wherein the first and second channel portions are substantially parallel to each other and joined to each other adjacent the ends thereof by at least two spacer members.

42. The system defined by claim 38 wherein the flange is of a deformable consistency.

43. A method for fabricating an inflatable cushion assembly for incorporation into an inflatable restraint system comprising the steps of:

a) providing an inflatable cushion which includes a gas inlet opening and a channel member disposed about the gas inlet opening;

b) inserting at least one elongate strip within the channel member of said cushion; and

c) retaining the strip within the channel member by providing a retaining means including at least one flange fixedly disposed about the strip and communicating with the channel member;

wherein the channel member, elongate strip and retaining means define a flanged cushion insert.

44. The method according to claim 43 wherein the flange is engaged with a corresponding opening provided in the channel member such that the flange is substantially exposed exteriorly thereof and configured to be slidably received in the channel member.

45. The method according to claim 43 wherein the retaining means includes a plurality of the flanges fixedly disposed about the strip, each of the flanges being engaged with a corresponding number of openings provided in the channel member such that the flanges are substantially exposed exteriorly of said channel member to retain the strip therein.

46. The method according to claim 44 wherein the retaining means additionally includes one of the flanges disposed about each end of the elongate strip such that the channel member is disposed therebetween.

47. The method according to claim 44 wherein the retaining means additionally includes an end cap mounted to each end of the elongate strip, each said cap including one of the flanges mounted thereto such that the channel member is proximate to said flanges and retained therebetween.

48. The method according to claim 43 wherein the strip is retained within the channel member by mounting one of the flanges to each end of the strip such that the channel member is proximate to said flanges and retained therebetween.

49. The method according to claim 43 wherein the strip is retained within the channel member by providing a plurality of caps each having one of the flanges mounted thereto, and mounting one of the caps to each end of the strip such that the channel member is proximate to said flanges and retained therebetween.

50. The method according to claim 43 wherein the flange and strip are monolithic.

51. The method according to claim 43 wherein the channel member is in the form of a hem constructed from the material of the gas inlet opening of the inflatable cushion.

52. A method for coupling an inflatable cushion to a reaction housing in an inflatable restraint system comprising the step of incorporating the flanged cushion insert defined in claim 43 within an attachment sleeve fixedly engaged with the reaction housing, the attachment sleeve being configured to slidably receive the flange of the cushion insert therein thereby coupling the cushion insert and inflatable cushion to the reaction housing.

53. The method according to claim 52 wherein the flanged cushion insert is axially inserted into the attachment sleeve of the reaction housing.

54. The method according to claim 52 wherein the flange of the flanged cushion insert is of a resilient consistency.

55. A method for coupling an inflatable cushion to a reaction housing in an inflatable restraint system comprising the steps of:

a) securing the flanged cushion insert defined in claim 43 within a channel portion of a cushion retainer member, the channel portion being configured to receive the flanged cushion insert therein to form a cushion retainer insert; and

b) incorporating the cushion retainer insert into a corresponding attachment sleeve fixedly engaged with the reaction housing, the attachment sleeve being configured to slidably receive the cushion retainer insert therein for coupling the flanged cushion insert and inflatable cushion to the reaction housing.

56. The method according to claim 55 wherein the flange of the flanged cushion insert is of a deformable consistency.

57. The method according to claim 55 wherein securement of the flanged cushion insert within the channel portion of the cushion retainer member is obtained by compressing the channel portion about the flanged cushion insert.