Squib, gas generation device for airbag, and gas generation device for seatbelt pretensioner
An ignition device and ignition powder technology, applied in the direction of gas generating device, belt tightener, pedestrian/passenger safety arrangement, etc., can solve the problems of extending the length of ignition device, increasing the ignition powder, rupture, etc.
Inactive Publication Date: 2010-07-07
NIPPON KAYAKU CO LTD
View PDF1 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0011] However, this type of igniter has the disadvantage that since the cylindrical member is filled in the cup, it occupies a considerable part of the space in the cup, so the amount of ignition powder filled in the cup becomes small.
[0012] In order to solve this shortcoming, the length of the igniter had to be extended when filling the prescribed amount of igniter
However, from the viewpoint of downsizing (thinning or shortening) the inflator, the length of the ignition device is required to be short
[0013] In particular, recently, there is a tendency to increase the amount of igniter filled in the igniter in order to more efficiently transmit fire from the igniter to the enhancer, but the igniter with the structure described in Patent Document 1 has a high higher and higher problems
[0014] In addition, if the ignition device operates to ignite the gunpowder inside, the cup body will be broken along the score provided on the top surface of the cup body due to the pressure of the ignition device.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0056] Hereinafter, the present invention will be specifically described.
[0057] figure 1 An example of the ignition device according to the present invention is shown in cross-section.
[0058]In the figure, number 1 is the cup, 2 is the cover of the cup, 3 is the heating element, 4 is the embolism, and the electrode pin 5 used for electrical connection with the outside is fixed on the glass seal 6. Embolism 4 on. In this way, by fixing the electrode pins 5 with the glass sealant 6 , electrical insulation can be ensured while maintaining high airtightness. In addition, the electrode pin 5 is connected to the heating element 3 inside the ignition device, and transmits an electric current from the outside to the heating element 3 .
[0059] In addition, for the plug 4 and the cup body 1, for example, laser welding is used to integrate the boundary portion of the cup body 1 and the plug 4 to form a welded portion indicated by reference number 36, thereby achieving high airt...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A squib has a cup body, a cup body cover, and a plug for holding electrode pins such that the pins are insulated from each other and closing an opening of the cup body. Ignition powder is placed inside the cup body, and a heating element connected to the electrodes and igniting the ignition powder by electricity supplied from the outside is placed in contact with the ignition powder. A metal circular tube-shaped or ring-shaped restraint member is provided on the outer periphery of the cup body, and the cup body cover covers around the restraint member.
Description
technical field [0001] The present invention relates to a squib installed in a gas generator or the like of an automobile safety device such as an air bag. [0002] In addition, the present invention relates to a gas generator for an air bag and a gas generator for a seat belt pretensioner equipped with the ignition device. Background technique [0003] Various electronic squibs have been developed conventionally as squibs for gas generators for inflating airbags mounted on automobiles. The ignition device usually has a metal pin for electrical connection with the outside, and an igniter (heating element) for igniting the gunpowder is provided at the other end of the metal pin. [0004] As such a heating element, there is known a so-called semiconductor bridge (Semiconductor Bridge, SCB) manufactured by semiconductor technology such as vapor deposition and a circuit board, including a bridge wire, by directly plating a resistive film. Various heating elements such as the s...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F42B3/12B01J7/00B60R21/26B60R22/46
CPCB60R2021/26029F42B3/103F42B3/04F42B3/127
Inventor 中村幸二塚本贵敏前田繁椋木大刚小池英幸
Owner NIPPON KAYAKU CO LTD