JP4086130B2 - Processing device for automobile parts equipped with gas generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing apparatus for automobile parts including a gas generator having an initiating device such as an air bag or a seat belt pretensioner.
[0002]
[Prior art]
Airbags and seat belt pretensioners that protect passengers when a vehicle collides are equipped with a gas generator with a detonator. That is, the airbag includes an inflator that electrically ignites and explodes a gas generator detonator when a vehicle collides, and inflates the airbag with a gas pressure generated from the gas generator. In addition, the seat belt pretensioner removes the slack remaining when the seat belt is mounted, and in order to accelerate the restraint by the belt, the gas generator detonator is electrically ignited and exploded, and the belt is generated by the gas pressure generated by the gas generator. The rod attached to is pulled.
[0003]
[Problems to be solved by the invention]
An automobile part equipped with such a gas generator reliably operates the detonator when a vehicle collides to generate high-pressure gas by the gas generator, inflates the airbag in the airbag, and seat belt in the seat belt pretensioner. The strict inspection is conducted because the passengers must be protected by pulling in the vehicle, and any product that deviates from the standard is discarded as a defective product. In this disposal process, the gas generator detonator is detonated, but the explosion sound is 115 dB or more, and it is processed in the factory because it greatly exceeds the work environment standard of 85 dB or less and the living environment standard of 70 dB or less. It is not possible to dispose of it by entrusting it to a blasting specialist who has large-scale processing facilities. Therefore, the processing cost to be entrusted is high, and if the metal part and the plastic part are separated after the blasting, it can be recycled, but it cannot be done by entrusting to a blasting specialist.
[0004]
An object of the present invention is to provide an inexpensive vehicle part that has a gas generator with a detonator and can be processed in a factory or the like to prevent and mute explosion sound and to ensure the safety of workers. It is to provide a processing device.
[0005]
[Means for Solving the Problems]
To achieve the above object, according to the present invention, as described in claim 1, an air bag, a seat belt pretensioner, or the like is installed inside a box body in which a soundproof material is applied to a peripheral wall of a steel plate and a door is attached to be openable and closable. A sound insulation box for placing an object to be processed of an automobile part equipped with a gas generator having an initiating device and exploding the object to be processed placed on the table, and an upper portion of the sound insulation box Further, a silencer exhaust tower provided with a silencer and an exhaust port is communicated with the sound insulation box.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a frame-like frame composed of four pillars, which is movable with wheels 2 attached to the four corners at the lower end. A sound insulation box 3 is provided at the upper part of the frame 1, and a muffler exhaust tower 4 communicating with the sound insulation box 3 is integrally provided at the upper part of the sound insulation box 3.
[0007]
The sound insulation box 3 is a box of steel plate walls 6, and a door 5 is attached to the front face so as to be opened and closed. A soundproof material 7 is applied to the steel plate wall 6 around the box. A bottom 8 in the sound insulation box 3 is provided with a table 8 for placing a workpiece W of an automobile part equipped with a gas generator such as an air bag or a seat belt pretensioner. A shielding disk 9 is attached with a passage 10 in the space between the plate 19. A passage hole 20 is formed in the top plate 19, and a secondary muffler small-diameter cylinder 12 in the muffler exhaust tower 4 described later is installed in the passage hole 20.
[0008]
Although not shown in the drawing, the connector 8 is provided with a connector that is connected to the ignition part of the gas generator of the workpiece W, and a hand operation switch 17 is connected to this connector from the outside of the sound insulation box 3. 18 is connected.
[0009]
The silencer exhaust tower 4 is formed of a steel plate cylinder 11, and the lower end thereof is fixed on the top plate 19 of the sound insulation box 3. Further, an exhaust port 15 is opened at the upper end of the cylindrical body 11. In the cylindrical body 11, the secondary muffler small diameter cylinder 12 described above communicates with a passage hole 20 formed on the top plate 19 and is fixed to the top plate 19. The fourth muffler large-diameter cylinder 13 is fixed to the top plate 19 with a gap on the outer periphery and sandwiching the baffle plate 21. The secondary silencing small diameter cylinder 12 and the fourth silencing large diameter cylinder 13 are suitably punched metal having a large number of ventilation holes. Further, a soundproof material 14 is provided around the skirt portion of the fourth silencing large diameter cylinder 13, that is, around the joint portion between the fourth silencing large diameter cylinder 13 and the top plate 19.
[0010]
As shown in FIG. 2, a plurality of confirmation lamps 16 are disposed on the outer surface of the door 5 that is attached to the front surface of the sound insulation box 3 so as to be openable and closable. The confirmation lamp 16 displays, for example, power on, door closing OK, lock OK, operation preparation, detonation ON, and the like.
[0011]
The processing operation by the apparatus of the present invention will be described below with the airbag as the workpiece W. First, connect the power cord to the existing 100V power supply, confirm that the power is turned on with the confirmation lamp 16, open the door 5 of the sound insulation box 3, place the air bag on the table 8, and use it as a detonator for the gas generator. The connector is connected and the door 5 is closed and locked.
[0012]
After closing the door 5, the confirmation lamp 16 confirms that the door is closed OK, the lock is OK, and the operation is ready, and the operator presses the initiation button with the hand operation switch 17 at a distance of 2 m or more from the apparatus. When the detonation button of the hand control switch 17 is pressed, the detonation ON of the confirmation lamp 16 is turned on, and the detonation device of the airbag mounted on the cradle 8 in the sound insulation box 3 is ignited and expelled from the gas generator. Gas is generated, and the airbag is inflated instantaneously and contracted by the high-pressure gas to complete the deployment of the airbag.
[0013]
When the gas generator detonator ignites and explodes, the explosion sound is first silenced by the sound insulation box 3 and shielded by the shielding disk 9, and further, as shown by the arrow in FIG. The secondary silencing small-diameter cylinder 12 enters through the passage hole 20 through the passage 10 and is depressurized by the secondary silencing small-diameter cylinder 12 to perform secondary silencing. From the second silencing small diameter cylinder 12, it goes down through the baffle plate 21 and enters the fourth silencing large diameter cylinder 13. The part of the fourth silencing large-diameter cylinder 13 that descends through the baffle plate 21, that is, the skirt part of the fourth silencing large-diameter cylinder 13, is third-order silenced by the soundproofing material 14, and the fourth-order silence. The pressure is reduced by the muffler large-diameter cylinder 13 to perform fourth-order mute. The noise at the time of blasting was suppressed within the environmental standard value of 65 dB to 84 dB by measuring the surrounding 3 m by the first to fourth order silencing actions. On the other hand, the gas generated in the sound insulation box 3 flows in the same manner as the explosion sound and is discharged from the upper end of the cylindrical body 11 of the muffler exhaust tower 4.
[0014]
The handling of the airbag after deployment is as follows. Open the door 5 and leave it for 1-2 minutes while the white smoke is diffusing. After confirming that the smoking has stopped diffusing, remove the airbag from the connector and take it out of the sound insulation box 3. Temporarily place it in a safe place and leave it for 30 minutes for disposal.
[0015]
At the time of this disposal, it is separated into a metal part and a plastic part, stored in each designated pallet, and handed over to a resource recycling specialist.
[0016]
In the above description, the workpiece W is an airbag, but a seat belt pretensioner including a gas generator can be similarly processed. Further, the present invention can be applied not only to automobile parts such as airbags and seat belt pretensioners, but also to other parts equipped with a detonator.
[0017]
Further, the frame 1 in FIG. 1 is portable with wheels 2 and has the convenience of being able to move to an appropriate place such as a factory if there is a power source. It is also possible to do.
[0018]
【The invention's effect】
As described above, according to the present invention, it is possible to reduce noise at the time of blasting in a factory or the like without entrusting a blasting specialist with high processing costs to the parts to be processed with a detonator that generates a loud explosion sound during processing. The working environment standard is 85 dB or less and the living environment standard is 70 dB or less, and it is possible to prevent a worker from being in danger and perform processing in a safe state, so that the processing cost can be reduced. In addition, the structure of the device itself is simple and can be provided at low cost. Further, after processing, the metal part and the plastic stick part can be separated and handed over to a resource recycling specialist, so that there is a beneficial advantage such as recycling.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view of the device of the present invention. FIG. 2 is a front view of a sound insulation box of the device of the present invention.
DESCRIPTION OF SYMBOLS 1 Frame 2 Wheel 3 Sound insulation box 4 Silencer exhaust tower 5 Door 6 Steel plate wall 7 Soundproof material 8 Stand 9 Shield disk 10 Path 11 Cylindrical body 12 Pivot 12 Secondary noise reduction small diameter cylinder 13 Fourth noise reduction large diameter cylinder 14 Sound insulation Material 15 Exhaust port 16 Confirmation lamp 17 Hand operation switch 18 Code 19 Top plate 20 Passage hole 21 Baffle plate

Claims (1)

An object to be processed for automobile parts equipped with a gas generator with a detonator such as an air bag or seat belt pretensioner inside a box body that is provided with a soundproof material on the peripheral wall of the steel plate and the door can be opened and closed. A sound insulation box provided with a stand for mounting and exploding an object to be processed placed on the stand, and a silencer exhaust tower provided with a sound deadening means and an exhaust port on the sound insulation box are communicated with the sound insulation box. The processing apparatus of the automotive part provided with the gas generator characterized by the structure mentioned above.

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