JP5437347B2 - Crew restraint system - Google Patents

Description

  According to the present invention, a folded airbag is arranged along the upper edge of the door opening, and the airbag is inflated with gas generated by an inflator at the time of a vehicle collision so that the airbag is in a curtain shape along the inner surface of the side portion of the passenger compartment. The present invention relates to an occupant restraint device to be deployed.

  In such an occupant restraint device, a device that fixes a harness for connecting an inflator provided on a roof side rail to a control device with a plurality of clips along the roof side rail and the rear pillar is known from Patent Document 1 below.

JP 2008-114739 A

  By the way, when water droplets due to condensation occur on the inner surface of the roof panel (the surface on the passenger compartment side) where the outer surface has come into contact with the outside air and cooled down, the water droplets falling from the roof panel directly connect the coupler connecting the inflator and harness. There is a possibility of water getting wet or water droplets adhering to the harness flowing down due to gravity to wet the coupler. When the coupler gets wet in this way, when checking the electrical continuity state with respect to the inflator, it is erroneously determined that the continuity state is normal, but it is normal even if it is abnormal. May be misjudged.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to prevent water droplets condensed on the roof panel from wetting the connection portion between the inflator and the harness.

In order to achieve the above object, according to the first aspect of the present invention, the roof side rail coupled to the side portion of the roof panel and extending in the longitudinal direction of the vehicle body is disposed along the upper edge of the door opening. the folded state airbag is fixed that, an occupant restraint system for deploying in a curtain shape along an inner surface of a side portion of the gas that the inflator upon collision of the vehicle is generated to inflate the air bag passenger compartment, said inflator A harness to which one end is connected to the vehicle body at a plurality of fixing points at intervals, a specific portion that is continuous with the one end of the harness and extends along the roof side rail is in the folded state. are spaced apart from the airbag upwardly, the connecting portion between the inflator and harness one end, extending in the vehicle width direction is coupled to the surface of the cabin side of the roof panel That is disposed below the roof arch Rutotomoni, fixed point to the vehicle body of the particular portion of the harness, the roof arch as a position closest to the highest and the inflator in the plurality of fixed points an occupant restraint system, characterized in that provided in the proposed.

According to the invention described in claim 2, in addition to the configuration of claim 1, the roof side rail is mounted with a protector having a cover portion covering the upper half of the folded airbag, An occupant restraint device is proposed in which the cover portion is interposed between the folded airbag and the specific portion of the harness .

According to the invention described in claim 3, in addition to the configuration of claim 1 or claim 2, a portion of the specific portion of the harness connected to an end opposite to the inflator is the folded portion. There is proposed an occupant restraint device that extends between the airbag in a state and the roof side rail and extends downward along a pillar that extends downward from the roof side rail .

According to the invention described in claim 4, in addition to the configuration of claim 3, there is provided an occupant restraint device in which the pillar extends downward from the front and rear intermediate portion of the roof side rail. Proposed.

  The front door opening 18 and the rear door opening 19 of the embodiment correspond to the door opening of the present invention, and the coupler 45 of the embodiment corresponds to the connection of the present invention, and the clip of the embodiment. 48 and 49 correspond to the fixed points of the present invention.

According to the present invention , the roof arch which is coupled to the surface of the roof panel on the passenger compartment side and does not come into contact with the outside air even if the surface of the roof panel on the outer surface which is cooled by contact with the outside air is condensed. In order to prevent condensation, placing the connection part between the inflator and the harness below the roof arch prevents water droplets generated by condensation from falling onto the connection part between the inflator and the harness, resulting in abnormalities due to water wetting. Can be prevented. In addition, since the roof arch is provided with a fixing point for the harness to the vehicle body, water droplets generated by condensation do not travel through the harness and wet the connection between the inflator and the harness, preventing the occurrence of abnormalities due to water wetting more reliably. can do.

In addition , since the highest fixing point among the plurality of fixing points for fixing the harness to the vehicle body is provided on the roof arch, water droplets generated by dew condensation pass from the other fixing points via the roof arch fixing point to the inflator. Therefore, it is possible to prevent the occurrence of abnormality due to water wetting more reliably.

Moreover, since the fixing point closest to the inflator is provided on the roof arch among the plurality of fixing points for fixing the harness to the vehicle body, the length of the harness between the fixing point of the roof arch and the connecting portion is minimized. Therefore, it is possible to reduce the possibility that water drops falling from the roof panel are transmitted through the harness and wet the connection portion.

The figure which shows the vehicle interior surface of the motor vehicle at the time of non-deployment | deployment of an airbag. 2 is an enlarged view of part 2 of FIG. FIG. 3 is a three-direction arrow view of FIG. 2. The disassembled perspective view of the principal part of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a view in the direction of arrow 7 in FIG. 2.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a roof side rail 12 is disposed along the side of the roof panel 11 in the longitudinal direction of the vehicle body, and from the roof side rail 12 to the A pillars 13 and 13, the B pillar 14, the C pillar 15, and D The pillar 16 extends downward. A front window opening 17 is formed between the front and rear A pillars 13 and 13, and a front door opening 18 is formed between the rear A pillar 13 and the B pillar 14. A rear door opening 19 is formed between the C pillar 15 and the C pillar 15, and a rear window opening 20 is formed between the C pillar 15 and the D pillar 16. The airbag 21 folded in a roll shape of the occupant restraint device is attached along the roof side rail 12 in the longitudinal direction of the vehicle body. The occupant restraint device having substantially the same structure is provided on both the left and right sides of the vehicle body. Hereinafter, the occupant restraint device provided on the right side of the vehicle body will be described as a representative example.

  The airbag 21 is constructed by sewing a double-layer base fabric, and a first protector 22, a second protector 23, and a third protector 24 made of synthetic resin are attached along the upper portion of the airbag 21. The rolls are bundled so as not to be unwound with a tape 25... The plurality of attachment pieces 21a... Protruding upward from the upper edge of the airbag 21 are overlaid on the first to third protectors 22, 23, 24, or alone, via the fixing members 26. Fixed to etc. An inflator 28 is fixed to the roof side rail 12 between the B pillar 14 and the C pillar 15 via a pair of front and rear mounting brackets 27, 27. A gas supply pipe 29 that protrudes forward from the front end of the inflator 28 is connected to an intermediate portion in the front-rear direction of the airbag 21.

  On the roof side rail 12 between the rear A pillar 13 and the B pillar 14 is fixed an assist grip base 30 for attaching an assist grip 41 for a front passenger, and the roof side rail above the C pillar 15 is fixed. 12, an assist grip base 31 for attaching an assist grip 41 for a passenger in the rear seat is fixed. Note that the rear end portion of the airbag 21 is folded forward in front of the D pillar 16.

  As shown in FIG. 5, the roof side rail 12 connected to the outer end in the vehicle width direction of the roof panel 11 includes a roof side panel outer 32, a roof side rail inner 33, and a roof side rail stiffener 34 that combines and reinforces them. , 35 and a closed section. The C pillar 15 includes a C pillar outer 36 that extends downward from the roof side panel outer 32 and a C pillar inner 37 that extends downward from the roof side rail inner 33 and has a closed cross section. The rear door 38 that opens and closes the rear door opening 19 is a sliding door.

  The lower surface of the roof panel 11 and the inner surface of the roof side rail 12 are covered with roof lining 39, and the inner surface of the C pillar 15 is covered with a C pillar garnish 40. The third protector 24, the inflator 28, and the assist grip base 31 are arranged in a space between the roof side rail 12 and the roof lining 39, and the assist grip 41 fixed to the assist grip base 31 passes through the roof lining 39 and is Exposed indoors.

  As shown in FIG. 2, the third protector 24 includes a half-cylindrical cover portion 24 a that covers the upper half of the folded airbag 21, and front and rear attachments that extend downward from the vehicle width direction outer side portion of the cover portion 24 a. Parts 24b and 24c.

  As shown in detail in FIG. 3, the rear mounting portion 24c has a box structure formed between three horizontal ribs a, b, c extending in the horizontal direction and two horizontal ribs b, c. A clip penetrating portion d, two lateral ribs a and b, and a notch-shaped opening e surrounded on three sides by the clip penetrating portion d, and 3 provided in the upper surface of the lateral rib a and extending in the vehicle width direction Sheets of longitudinal ribs f, longitudinal ribs g extending in the front-rear direction to connect the three longitudinal ribs f, and two longitudinal ribs h provided on the upper surface of the clip penetrating portion d and extending in the vehicle width direction. h, a longitudinal rib i extending in the front-rear direction and connecting the two longitudinal ribs h, h, and two longitudinal ribs j, j provided on the upper surface of the lateral rib c and extending in the vehicle width direction.

As shown in FIGS. 3, 4, and 6, the assist grip base 31 has two fastening portions 31 a and 31 a at the front and rear portions fixed to the roof side rail 12 by bolts 42 and 42. The fixing member 26 includes a pair of fixing protrusions 26a and 26a and a pair of locking protrusions 26b and 26b. The protector fixing part 24d protruding upward from the cover part 24a of the third protector 24 has a pair of engagements. Stop holes 24e and 24e are formed, and the fixing member 26 is fixed to the protector fixing portion 24d of the third protector 24 by locking the locking protrusions 26b and 26b to the locking holes 24e and 24e. The fixing protrusions 26 a and 26 a of the fixing member 26 are formed with a pair of fixing holes 21 b and 21 b formed in the mounting piece 21 a of the airbag 21 and a pair of fixing holes 31 d formed in the airbag mounting portion 31 b of the assist grip base 31. When the bolt 43 having the fixing member 26 penetrated is fastened to the assist grip base 31 in a state inserted into the assist grip base 31, the protector fixing portion 24 d of the third protector 24 and the attachment piece 21 a of the airbag 21 are connected to the assist grip base 31. Fixed to.

  Thus, the protector fixing portion 24d of the third protector 24 is fixed to the roof side rail 12 via the assist grip base 31, and the clip 44 that penetrates the clip penetrating portion d of the rear mounting portion 24c is used as the roof side. It is fixed to the rail 12. The assist grip 41 is fixed to the front and rear assist grip mounting portions 31c and 31c sandwiched between the front and rear fastening portions 31a and 31a and the airbag mounting portion 31b.

  In addition, the 3rd protector 24 is fixed to the roof side rail 12 by the clip 44 also in the attaching part 24b of the front side (refer FIG. 2).

As shown in FIGS. 2 and 7, one end of a harness 46 is connected to the rear end of the inflator 28 fixed to the roof side rail 12 via a pair of mounting brackets 27, 27 via a coupler 45. A roof arch 47 extending in the vehicle width direction is fixed to the lower surface of the roof panel 11 located above the coupler 45, and a harness 46 extending from the coupler 45 is bent upward and fixed to the lower surface of the roof arch 47 with a clip 48. From there, it extends rearward along the roof side rail 12 and then bends downward, opening between the folded airbag 21 and the roof side rail 12, in particular, the rear mounting portion 24 c of the third protector 24. The portion e passes from top to bottom and extends downward along the C pillar 15. The harness 46 is fixed at a plurality of positions of the roof side rail 12 and the C pillar 15 by clips 49 different from the clip 48 (see FIG. 5).

That is, a specific portion 46a that is connected to the one end of the harness 46 and extends along the roof side rail 12 is arranged to be spaced upward from the folded airbag 21, and the specific portion 46a of the harness 46 is A portion 46 b connected to the end opposite to the inflator 28 passes between the folded airbag 21 and the roof side rail 12 and extends along the C pillar 15 extending downward from the roof side rail 12. Extends downward. In addition, the clip 48 as a fixing point to the vehicle body of the specific portion 46a of the harness 46 is provided on the roof arch 47 so as to be the highest position among all the clips 48, 49, and closest to the inflator 28. It is done.

  Next, the operation of the embodiment of the present invention having the above configuration will be described.

  When the outer surface of the roof panel 11 comes into contact with the outside air and cools at a low temperature, the air in the passenger compartment that contacts the inner surface of the roof panel 11 is cooled and water droplets are generated due to condensation, and the water droplets fall from the roof panel 11. There is a case. If water drops falling from the roof panel 11 wet the coupler 45 of the inflator 28 or wet the coupler 45 through the harness 46, the water drops may enter the coupler 25 and cause problems such as a short circuit. There is.

  Since the roof arch 47 provided on the lower surface of the roof panel 11 does not directly contact the outside air, the roof arch 47 is substantially equal to the temperature in the passenger compartment, and water droplets due to condensation do not occur. Therefore, by disposing the coupler 45 that connects the inflator 28 and the harness 46 below the roof arch 47, it is possible to prevent water drops falling from the roof panel 11 from wetting the coupler 45. Among the plurality of clips 48, 49... For fixing the harness 46, the clip 48 closest to the coupler 45 fixes the highest portion of the harness 46 to the roof arch 47 and the clip 48 closest to the coupler 45. Since the harness 46 between the coupler 45 and the coupler 45 is located below the roof arch 47, even if water drops dropped from the roof panel 11 adhere to the harness 46, the water drops flow away from the coupler 45. This prevents the coupler 45 from getting wet due to the wetness of the water.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, the pillar of the present invention is not limited to the C pillar 15 and may be any other pillar.

  Further, the fixing point of the present invention is not limited to the one using the clips 48 and 49, and any means such as a bolt may be used.

11 Roof panel
12 roof side rails
15 C pillar (pillar)
18 Front door opening (door opening)
19 Rear door opening (door opening)
21 airbag
24 3rd Protector (Protector)
24a cover part 28 inflator 45 coupler (connection part)
46 Harness
46a specific part
46b part 47 roof arch 48 clip (fixed point)
49 clips (fixed points)

Claims (4)

A folded airbag (21) disposed along the upper edge of the door opening (18, 19) on the roof side rail (12) coupled to the side of the roof panel (11) and extending in the vehicle longitudinal direction. were fixed, a passenger restraint system for deploying in a curtain shape along an inner surface of a side portion of the gas that the inflator (28) at the time of collision of the vehicle is generated to inflate the air bag (21) passenger compartment,
A harness (46) having one end connected to the inflator (28) is fixed to the vehicle body at a plurality of fixing points (48, 49) at intervals .
A specific portion (46a) connected to the one end of the harness (46) and extending along the roof side rail (12) is arranged spaced apart upward from the folded airbag (21),
The inflator (28) and the harness (46) connecting portion of the one end (45), disposed beneath the roof arch is coupled to the surface of the cabin side of the roof panel (11) Ru extends in the vehicle width direction (47) is Rutotomoni, the fixed point of the vehicle body of a particular portion (46a) of the harness (46) (48), most highest and the inflator (28) among the plurality of fixed points (48, 49) An occupant restraint device provided on the roof arch (47) so as to be in a close position . The roof side rail (12) is fitted with a protector (24) having a cover part (24a) covering the upper half of the folded airbag (21), and the cover part (24a) 2. The occupant restraint device according to claim 1, wherein the occupant restraint device is interposed between the airbag (21) in a state and the specific part (46 a) of the harness (46) . A portion (46b) of the specific portion (46a) of the harness (46) that is connected to an end opposite to the inflator (28) is connected to the folded airbag (21) and the roof side rail (12). Occupant restraint according to claim 1 or 2, wherein the occupant restraint extends downward along a pillar (15) extending downward from the roof side rail (12). apparatus. The occupant restraint device according to claim 3, characterized in that the pillar (15) extends downward from a front-rear intermediate portion of the roof side rail (12).

Images