Ignition device, airbag, and gas generation device for seatbelt pretensioner

An ignition device and ignition powder technology, applied in pedestrian/passenger safety arrangements, vehicle safety arrangements, weapon accessories, etc., can solve the problems of low productivity of resin plastic packaging, larger ignition devices, larger sizes, etc., to achieve cheap manufacturing, Prevent malfunction and improve productivity

Inactive Publication Date: 2009-02-11
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the productivity of the resin molding in the state of being connected to the sealing plug is significantly lower than that of the usual IC (Integrated Circuit, integrated circuit) and other parts fixed on the lead frame (leadframe).
[0016] Moreover, when the connection between the electrode pin and the electronic circuit has been firmly fixed with solder, there is a possibility of solder cracking caused by residual stress
[0017] Furthermore, in order to securely connect the electrode pins and the electronic circuit, the length of the connecting portion must be certain. Therefore, if such a structure is adopted in an ignition device that is originally small in size, the ignition device will become larger. There is also a problem of increasing the size when mounted in a gas generator

Method used

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  • Ignition device, airbag, and gas generation device for seatbelt pretensioner
  • Ignition device, airbag, and gas generation device for seatbelt pretensioner
  • Ignition device, airbag, and gas generation device for seatbelt pretensioner

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Embodiment Construction

[0078] Hereinafter, the present invention will be specifically described.

[0079] figure 1 The ignition device of the present invention is shown in cross-sectional view. Among the figure, number 1 is a cup made of metal, and number 2 is an ignition powder. 3 is an ASIC assembly formed by molding the substrate with resin, wherein the substrate is equipped with components necessary for electronic circuits such as ASIC or capacitors. In the figure, 4 is an ASIC, and 5 is a capacitor. Here, the so-called ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit) 4 refers to an integrated circuit for specific applications. communication, and according to the coded information to make the ignition device fire. Furthermore, the capacitor 5 functions as an electric energy storage mechanism.

[0080] Moreover, 6 is a heating element arranged on the top of the ASIC package 3 , and 7 is a communication electrode also arranged on the bottom of the ASIC pa...

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Abstract

An ignition device that has high ability of shielding against electromagnetic wave noise etc., that is compact in size, and where electricity conduction to an electric circuit integrated in the device is reliable. The ignition device has a metal cup body and a metal closure plug for holding electrode pins in an insulating manner and closing the opening of the cup body in an integrated manner. Ignition powder, an ASIC, a capacitor, and a heating element are contained in the cup body. The ASIC is electrically connected to the electrode pins, the capacitor, and the heating element. The heating element is in contact with the ignition powder. A metal flange for fixing the closure plug to an installation body of the ignition body is provided at an outer peripheral section of the closure plug.

Description

technical field [0001] The present invention relates to an ignition device mounted in a gas generator or the like used in an automobile safety device such as an airbag, a gas generator for an airbag equipped with the ignition device, and a seat belt Gas generating device for seat belt pretensioner. Background technique [0002] Various electronic ignition devices have been developed conventionally as ignition devices for gas generators for inflating air bags mounted on automobiles. [0003] The ignition device usually has a metal pin for electrical connection with the outside, and the other end of the metal pin is provided with a heating element for igniting the gunpowder. [0004] As such a heating element, a heating element incorporated in a printed subcircuit disclosed in Patent Document 1 and Patent Document 2 corresponding thereto is known. [0005] Furthermore, on the other hand, it is conceivable to convert the airbag system into a local area network (LAN) to contro...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F42B3/12F42B3/13
CPCB60R2021/26029F42B3/122
Inventor前田繁椋木大刚久保大理
OwnerNIPPON KAYAKU CO LTD