JP3909671B2 - Airbag processing equipment - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an airbag processing apparatus used to discard an airbag mounted on a vehicle.
[0002]
[Prior art]
As a conventional airbag processing apparatus, a sealed space is formed by a wall portion having a soundproofing and gasproofing function, and an unused airbag module removed from a vehicle is accommodated in the sealed space, and plasma spraying, glowing is performed. Some air bags are inflated by operating the inflator of the air bag module by plug heating or energization. An example of this type of airbag processing apparatus is described in Japanese Patent Application Laid-Open No. 2000-264161.
[0003]
[Problems to be solved by the invention]
By the way, in the airbag processing apparatus as described above, since the airbag operates explosively, not only the durability is required, but also the operation sound of the airbag and the collision sound inside the apparatus are generated. Therefore, the soundproofing measures are also important. In the past, there has been a demand for improvement in enhancing sound insulation as well as durability.
[0004]
OBJECT OF THE INVENTION
The present invention has been made in view of the above-described conventional situation, and an object thereof is to provide an airbag processing apparatus capable of improving durability and soundproofing.
[0005]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an air bag processing apparatus that is an air bag processing apparatus that operates by accommodating an air bag in a casing that forms a sealed space. wall portion comprises an inner wall for passing the sound as well as absorb the impact receiving an airbag inflated and deployed, the sound barrier to absorb sound, an outer wall provided with a rigid layer that blocks out of the housing, the inner wall but a configuration that includes a cutting teeth portion tearing the airbag collided, as claimed in claim 2, a structure having a space layer between the inner wall and soundproof wall as claimed in claim 3, the outer wall, and the rigid layer The viscoelastic layer having elasticity is provided on the inner side, and the above configuration is used as a means for solving the conventional problems.
[0006]
In the above configuration, as the inner wall, a panel formed in a net shape, a punching panel in which a large number of holes are formed in a metal plate, a porous material, or the like can be used. As the soundproof wall, a fiber aggregate, a porous material, or the like can be used. Furthermore, as the rigid layer of the outer wall, a metal plate or a composite plate filled with concrete between the metal plates can be used, and as the viscoelastic layer, rubber, synthetic resin, or the like can be used.
[0007]
[Effects of the Invention]
In the airbag processing apparatus according to the first aspect of the present invention, the airbag is accommodated in a casing that forms a sealed space, and the airbag is operated. At this time, in the processing apparatus, the wall portion of the casing is configured by an inner wall, a soundproof wall, and an outer wall, and the inner wall is cut at the incision portion when the inflated airbag collides. Mitigates impact at the time of collision, releases the gas in the airbag into the housing, reduces the residual amount of gas in the airbag, prevents impact on the soundproof wall, and operates the airbag The sound is allowed to pass and the operating sound is prevented from reverberating in the housing. The soundproof wall provides sound absorption by converting sound energy into other energy such as heat, and absorbs the operation sound of the airbag and the impact sound of the airbag against the inner wall. The outer wall blocks the noise generated in the housing and suppresses the vibration by the heavy rigid layer.
[0009]
In the airbag processing apparatus according to the second aspect of the present invention, since the space layer is provided between the inner wall and the soundproof wall, the airbag colliding with the inner wall is completely prevented from reaching the soundproof wall.
[0010]
In the airbag processing apparatus according to claim 3 of the present invention, since the outer wall includes a viscoelastic layer having elasticity on the inner side of the rigid body layer, the excitation energy generated when the airbag collides with the inner wall is generated. Absorbed by the elasticity of the viscoelastic layer.
[0011]
【The invention's effect】
According to the airbag processing apparatus of the first aspect of the present invention, in the airbag processing apparatus that operates by accommodating the airbag in the casing that forms the sealed space, the wall of the casing that forms the sealed space The inner wall, soundproof wall and outer wall are provided in the part, so that each wall can efficiently absorb the impact, operation sound, collision sound, and vibration when the airbag is activated, greatly improving durability and soundproofing. Can be increased.
[0012]
Then, according to the airbag processing apparatus described above, by providing the incision portion for tearing the inflated and deployed airbag on the inner wall, it is possible to further reduce the impact when the airbag collides with the inner wall, Further improvement in durability can be realized. Also. Since the gas in the airbag is released into the housing, the gas exhaust efficiency in the exhaust operation to be performed later can be increased.
[0013]
According to the airbag processing apparatus of the second aspect of the present invention, the same effect as in the first aspect can be obtained, and a space layer is provided between the inner wall and the soundproof wall, so that it collides with the inner wall. It is possible to completely prevent the airbag from reaching the soundproof wall and protect the soundproof wall, and to efficiently absorb the operation sound and the collision sound by the soundproof wall without reverberating inside the housing.
[0014]
According to the airbag processing apparatus of the third aspect of the present invention, the same effects as those of the first and second aspects can be obtained, and the outer wall is provided with a viscoelastic layer on the inner side of the rigid layer. Noise and vibration generated during the operation of the bag can be further reduced.
[0015]
【Example】
Hereinafter, an embodiment of an air bag processing apparatus according to the present invention will be described with reference to the drawings.
[0016]
The processing apparatus 1 shown as a whole in FIG. 3 includes a housing 3 in which a sealed space 2 is formed by a wall portion having soundproofing and gasproofing functions. The housing 3 is provided with a door 4 on the front side, and the interior is divided into three upper and lower stages by two removable support bases 5. Each support base 5 is at least partially formed in a lattice shape or a net shape in order to ensure air permeability in the vertical direction.
[0017]
As shown in FIG. 1, the housing 3 is provided with an exhaust port 6 on one side as well as on the other side, as a configuration for discharging gas generated from an airbag module to be described later. An air supply port 7 facing the exhaust port 6 is provided. In this embodiment, an exhaust port 6 and an air supply port 7 are provided for the upper stage and the middle stage, respectively. Each exhaust port 6 is connected to an exhaust pump 10 with a filter via a pipe 9 provided with an exhaust valve 8 in the middle.
[0018]
Each air supply port 7 is connected to a pipe 11 leading to the exhaust port 10 </ b> A of the exhaust pump 10. That is, the processing apparatus 1 of this embodiment circulates the air from which the gas component has been removed by the exhaust pump 10 and uses it for supplying air. In addition, although the manual type was illustrated as the exhaust valve 8, what was automatically open | released in response to the exhaust pump 10 can also be used.
[0019]
Further, as shown by a dotted line in FIG. 3B, the housing 3 includes a clamp mechanism C1 for fixing an airbag module for a passenger seat at the upper stage, and an air for driver's seat at the middle stage. A clamp mechanism C2 for fixing the bag module is provided. That is, the processing apparatus 1 can simultaneously operate a plurality of airbag modules, and the clamps C1 and C2 prevent the airbag module from jumping up during processing, so that the airbag module collides with the wall portion. Such a situation is prevented in advance.
[0020]
And the housing | casing 3 is being fixed on the base 12 with the exhaust pump 10, Furthermore, it can be freely moved by fixing the base 12 on the trolley | bogie 13. FIG. Further, a control device 14 for energizing the airbag module and operating the exhaust pump 10 is provided on the base 12 so that the processing device 1 can be used completely independently. A battery can be provided.
[0021]
Here, as shown in FIG. 1B, the wall portion of the housing 3 in the processing apparatus 1 receives an inflated airbag and allows sound to pass through, and a soundproof wall 22 that absorbs sound, The structure includes an outer wall 23 provided with a rigid layer 23 </ b> A that blocks the inside and outside of the housing, and a space layer 24 between the inner wall 21 and the soundproof wall 22.
[0022]
The inner wall 21 has sufficient strength to withstand the impact of the airbag that is inflated and deployed. As shown in part of FIG. 2A, the inner wall 21 connects the metal member 21A having a rhombus frame shape. And formed into a mesh panel. In addition, as shown in FIG. 2B, each metal member 21A has a triangular shape with the inside of the casing on the right side as the apex, as shown in FIG. It is a sharp incisor portion 21B for cutting the bag.
[0023]
As the soundproof wall 22, for example, a fiber 22B such as glass wool filled between two outer skins 22A made of felt or the like is used. It should be noted that a flame retardant felt is used on at least the surface of the outer skin 22A on the side of the space layer 24 to reliably prevent ignition due to heat generated during the operation of the airbag. Further, in order to further improve the sound absorption efficiency of the fiber 22B, the outer skin 22A may be disposed only in the vicinity where the airbag module is fixed, and the fiber 22B may be exposed otherwise.
[0024]
The outer wall 23 includes a metal rigid body layer 23A that forms the appearance of the housing 3 and blocks the inside and the outside, and a stretchable viscoelastic layer 23B provided inside the rigid body layer 23A. The viscoelastic layer 23B For example, a rubber material is used. Furthermore, the space layer 24 is set to a thickness that prevents the airbag that has inflated outward from the gap of the inner wall 21 from contacting the soundproof wall 22 when the inflated airbag collides with the inner wall 21. .
[0025]
The wall portion structure including the inner wall 21, the soundproof wall 22, the outer wall 23, and the space layer 24 is provided on the horizontal and vertical wall portions of the housing 3 and the door 4. Further, an appropriate seal structure for soundproofing and gasproofing can be provided between the main body of the housing 3 and the door 4.
[0026]
The airbag processing apparatus 1 having the above-described configuration fixes the airbag module to each of the clamps C1 and C2 in the casing 3, and connects a lead wire to the inflator of each airbag module. Each air bag module is actuated after sealing.
[0027]
At this time, in the processing apparatus 1, the inflated airbag is received by the inner wall 21 to absorb the impact, and the airbag B is inflated from the gap of the inner wall 21 as shown in FIG. 2 (c). At this time, by tearing the airbag B at the incision portion 21B, the gas in the airbag B is released into the housing 3 and the impact is further alleviated. Further, the space layer 24 prevents the airbag B bulging from the gap between the inner walls 21 from colliding with the soundproof wall 22. Furthermore, the inner wall 21 allows the operation sound of the airbag module to pass therethrough and prevents the operation sound from reverberating in the housing 3.
[0028]
The soundproof wall 22 has a sound absorbing effect by converting sound energy into other energy such as heat, and absorbs the operation sound of the airbag module that has passed through the inner wall 21 and the collision sound of the airbag B against the inner wall 21. To do. The outer wall 23 absorbs vibration energy generated when the airbag B collides with the inner wall 21 by the viscoelastic layer 23B, and generates noise generated in the housing 3 by the heavy rigid layer 23A. Shuts off and suppresses vibration.
[0029]
In this way, the airbag processing apparatus 1 efficiently absorbs the impact, operating noise, collision noise, and vibration during the operation of the airbag module by the walls 21, 22, and 23, thereby improving durability and soundproofing. It is very excellent in nature. Further, since the configuration of the wall portion is relatively simple, the housing 3 can be made compact.
[0030]
In addition, after the above-described operation processing, the exhaust pump 10 exhausts the inside of the housing 3. At this time, in the processing apparatus 1, the airbag B that has collided with the inner wall 21 is cut by the incision portion 21 </ b> B. Since the gas is released, the residual amount of gas in the airbag B can be extremely reduced, and the exhaust efficiency of the gas during exhaust becomes good.
[0031]
The air bag processing apparatus according to the present invention is not limited to the detailed configuration of the embodiment described above, and the inner wall is formed with a number of holes in the metal plate in addition to the mesh panel of the embodiment. A punched panel, a porous material, or a combination of these can be used.
[0032]
Further, in the incisor portion, it is possible to use a separate incisor member that is integrally provided on the inner wall or attached to the inner wall as in the above-described embodiment, and can be changed as appropriate even if it is in the shape. . An opening can be formed in the airbag even if a pin is used, but in this case, the pin remains stuck and the gas is not released sufficiently, so that the incisor has a predetermined length. It is desirable.
[0033]
For the soundproof wall, in addition to the outer skin and fibers of the above embodiment, a net can be used as the outer skin, and a porous material such as a flexible urethane foam can be used as the wall body. Further, as the rigid layer of the outer wall, in addition to the metal plate of the above embodiment, a composite plate filled with concrete between the metal plates can be used, and for the viscoelastic layer, besides the rubber of the above embodiment, a synthetic resin Or a vibration-damping net, or a combination of substrates and restraining materials as appropriate.
[0034]
Furthermore, in the above-described embodiment, the case where the airbag module is activated is described as the airbag process. However, the present invention is not limited to this, and an airbag component such as an inflator may be activated.
[Brief description of the drawings]
FIG. 1 is a view for explaining an embodiment of an airbag processing apparatus according to the present invention, and is a perspective view for explaining a housing and an exhaust system and a sectional view (b) for a wall portion.
FIG. 2 is a partial front view of the inner wall (a), a cross-sectional view (b) based on an AA arrow in FIG. A, and a cross-section illustrating the inner wall and the space layer when the airbag is inflated and deployed. It is a figure (c).
FIG. 3 is a front view (a) and a side view (b) for explaining the entire processing apparatus.
[Explanation of symbols]
B Airbag 1 Processing device 2 Sealed space 3 Housing 21 Inner wall 21B Cutting teeth 22 Soundproof wall 23 Outer wall 23A Rigid body layer 23B Viscoelastic layer 24 Spatial layer

Claims (3)

An airbag processing apparatus that operates by accommodating an airbag in a casing forming a sealed space, and the wall portion of the casing forming the sealed space receives the inflated and deployed airbag and absorbs the impact In addition, it has an inner wall that allows sound to pass through, a soundproof wall that absorbs sound, and an outer wall that is provided with a rigid layer that blocks the inside and outside of the housing , and the inner wall has an incisor portion that cuts off the crashed airbag An air bag processing apparatus.   The airbag processing apparatus according to claim 1, further comprising a space layer between the inner wall and the soundproof wall.   The airbag processing apparatus according to claim 1 or 2, wherein the outer wall includes a rigid body layer and a viscoelastic layer having elasticity provided therein.

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