JP4452860B2 - Seat with air bag module - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a seat equipped with an air bag module in which an air bag module in which an air bag is assembled with a gas pressure generated from an inflator so as to be inflated and deployed is provided on a side portion of a seat back as a cushion for side collision.
[0002]
[Prior art]
Conventionally, as a seat with an air bag module, a trim cover breakage is formed by a seam stitched together with one end of each blanching across each end of the trim cover, and two blanches are attached to the trim cover. An air bag module is provided on the inside, and is wrapped with two blanches and attached to the side plate of the seat back frame, and the entire seat back including the air bag module is covered with a trim cover (special feature). Kaihei 11-115676).
[0003]
In the airbag module equipped seat, the two blankets are divided on both sides from the seam that becomes the breakage part of the trim cover, one sheet is wound from the side of the back pad to the rear side, and the other is back pad It is disclosed to assemble the bundling by winding it from the bank part to the front part side, drawing it inward from the hanging hole of the trim cover, and connecting and fastening each end part with a latching clip.
[0004]
In the air bag module equipped seat, the webbing covers the back pad over a large area, and the back pad is bent and deformed by the inflation pressure of the air bag. It is inferior in that the pressure is concentrated on the seam that becomes the rupture part of the trim cover with a force cloth.
[0005]
Instead of putting the power cloth on the back pad from the seam where the trim cover breaks, pull the power cloth inward from the cavity of the back pad and wrap the airbag module directly with the power cloth. It is intended to be fastened by a listing wire provided at the end.
[0006]
In the case of the listing wire, if the end of the bundling supported by the listin wire moves in the horizontal direction on the axis along with the assembly work, the airbag module cannot be wrapped in the entire area of the bundling Will occur. This is also an obstacle to concentrating the inflation pressure of the air bag with the seam at the seam that becomes the broken portion of the trim cover.
[0007]
[Problems to be solved by the invention]
The present invention draws the baffle inward from the cavity of the back pad, wraps the air bag module directly with the baffle, and can be securely tensioned and attached with the listing wire provided at the end of each baffle. An object of the present invention is to provide an airbag module-equipped seat in which the airbag can be efficiently inflated and deployed by quickly concentrating the seam to the seam that becomes the fracture portion of the trim cover.
[0008]
Another object of the present invention is to provide an air bag module equipped sheet that includes listing wires that do not come apart from each other, and that can efficiently concentrate the inflation pressure of the air bag with a blanket at the seam that becomes the breaking portion of the trim cover. And
[0009]
[Means for Solving the Problems]
In the airbag module equipped sheet according to claim 1 of the present invention, the airbag module assembled so that the airbag can be inflated and deployed with the gas pressure generated from the inflator, and the fractured portion associated with the inflation and deployment of the airbag are stitched together. The trim cover that is formed, two blankets that are sewn together at the end of the trim cover with a seam that becomes the break part of the trim cover, and each continuous from the seam that becomes the break part of the trim cover It has a listing wire that pulls and supports the force cloth,
Place the air bag module in the back pad cavity and attach it to the side plate of the seat back frame, pull the power cloth inward from the back pad cavity, wrap the air bag module with the power cloth, and the power cloth It is attached by tensioning with a listing wire that is entangled behind, and the entire back pad including the air bag module is encapsulated with a trim cover.
A support part that is inserted into the end part of the webbing with a length corresponding to the width of each end part of the webbing, an arm part that bends in parallel from both sides of the support part, and an axis extending from the support part to the arm part. A listing wire having a shoulder portion bent inwardly, the shaft ends of the opposing arm portions of the listing wire being entangled with each other behind the side plate, and each bundling is tension-fastened with the listing wire It is constituted by.
[0010]
In the airbag module equipped seat according to claim 2 of the present invention, the hook member in which the latch member of each listing wire is provided in the seat back frame, and the shaft end of each arm portion is bent in a substantially U shape, and each hook Each listing wire is provided with a locking portion that is bent at the shaft end of each portion, and each listing wire that is turned to the back side of the side plate is hooked to the retaining member by the hook portion, and each listing wire is entangled with each other by the locking portion. It is constituted by.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, referring to the attached drawings, FIG. 1 shows a seat back B of an assistant seat equipped with the airbag module 1 on the right side when viewed from the front of the vehicle. The seat back B is entirely covered with a trim cover 4 in which the airbag module 1 is attached to the side plate 3 of the seat back frame 2 and a break portion 40 is formed at the seam of the airbag (not shown). By wrapping, the air bag module is built in.
[0012]
Although not particularly shown, the air bag module 1 holds the inflator with a retainer, protrudes the tightening bolt of the retainer outward from the air bag, and assembles the inflator integrally with the retainer inside the air bag mounting base. The retainer tightening bolt is protruded to the outside, and the whole is accommodated in the module case, and is assembled by including harnesses and connectors necessary for circuit configuration with related devices such as an impact sensor.
[0013]
The module case has a lid that can be opened and closed hinged to the case body, or a housing consisting of a case body with a fragile part such as a V-groove on the front surface and a lower plate. There is something that can be opened.
[0014]
As shown in FIG. 2, the air bag module 1 is wrapped with force cloths 5 and 6 and accommodated in the cavity 8 of the back pad 7, and retainer fastening bolts 9 and nuts 10 are mounted on the side plate 3 of the seat back frame 2. The back pad 7 including the air bag module 1 is entirely covered with a trim cover 4 and is connected to an impact sensor provided on the vehicle body side by circuit connection.
[0015]
The trim cover 4 can be formed of a single material such as genuine leather, synthetic leather, and fabric, or a wadding cover in which a skin material, a wadding material, and a backing material are integrally laminated. The trim cover 4 sews a front gusset portion 41 that encloses the left and right bank surfaces from the center of the seat surface and a side gusset portion 42 that extends from the peripheral side surface to the back surface, and the rear gusset portion 43 can be opened and closed with a slide fastener 44. By being prepared, it is sewn into a bag shape.
[0016]
The trim cover 4 has a seam located at the apex of the bulging portion corresponding to the bank portion of the front gusset portion 41 covering the left and right bank surfaces from the center of the seat surface and the side gusset portion 42 extending from the peripheral side surface to the back surface. (Refer FIG. 1), the fracture | rupture part 40 accompanying the expansion | deployment deployment of an airbag is formed. The seam that becomes the breaking portion 40 is cut by stress caused by inflation of the air bag while maintaining the strength that can withstand normal usability by stitching the 8th thread and the 20th thread as upper and lower sewing threads. Easy to sew.
[0017]
Instead, it can be formed by a seam provided in the surface of the side gusset portion 42 in the vicinity of the open side of the module case with the breaking portion 40 accompanying the inflation and deployment of the airbag. In this trim cover 4, the breakage portion 40 is located close to the open side of the module case, so that the inflation pressure of the airbag can be applied quickly, and the airbag is inflated and deployed at a position where it is not obstructed by the back pad 7. To preferred.
[0018]
The trim cover 4 is sewed together with the stitching thread forming the above-described breaking portion 40 across the seam allowances of the front gusset portion 41 and the side gusset portion 42, thereby inflating an airbag such as a polyester nonwoven fabric or cotton cloth. Two webbings 5 and 6 made of a material that does not stretch even under pressure are provided on the inside. As shown in FIG. 3, the force cloths 5 and 6 have the seam allowance of the front gusset portion 41 and the side gusset portion 42 so that the inflation pressure of the airbag acts only on the sewing thread, and the cloth ends do not fray. They are sewn together on the fabric surface, and the terminal is sewn separately with a small count sewing thread to provide a continuous ring shape.
[0019]
The baffles 5 and 6 are provided with listing wires 11 and 12 formed of rigid wires such as hard steel wires and piano wires as shown in FIG.
[0020]
The listing wires 11 and 12 are parallel to both sides of the support portions 11a and 12a and support portions 11a and 12a inserted into the end portions of the forceps 5 and 6 with a length corresponding to the end width of the forceps 5 and 6. Arm portions 11b, 11c, 12b, and 12c that are bent into the shoulder portions, and shoulder portions 11d, 11e, 12d, and 12e that are bent in the shape of a letter in an axis extending from the support portions 11a and 12a to the arm portions 11b, 11c, 12b, and 12c; The hook portions 11f, 11g, 12f, and 12g in which the shaft ends of the arm portions 11b, 11c, 12b, and 12c are bent in a substantially U shape, and the lock in which the shaft ends of the hook portions 11f, 11g, 12f, and 12g are bent It is formed with parts 11h, 11i, 12h, 12i.
[0021]
In the configuration of the listing wires 11 and 12, the shoulder portions 11d, 11e, 12d, and 12e are provided for preventing displacement of the force cloths 5 and 6 that are applied to the axes of the support portions 11a and 12a. As shown in FIG. 5 (only one side is shown), the lock portions 11h, 11i, 12h, and 12i are bent in the lateral direction from the hook portion 11f and the other 12h in the vertical direction outward from the hook portion 12f. It is provided to be intertwined.
[0022]
Along with the listing wires 11 and 12, a latch member 13 formed of a metal bar or the like is attached to the seat back frame 2 by welding or the like (see FIG. 4). The latch member 13 has an axis longer than the interval between the parallel arm portions 11b, 11c, 12b, and 12c of the listing wires 11 and 12, and the listing wires 11 and 12 are bent by bending the axis into a V shape. Trough bent portions 13a and 13b for hooking the hook portions 11f, 11g, 12f, and 12g are provided.
[0023]
In order to assemble the seat back B from the respective parts, before the trim cover 4 is put on the back pad 6, as shown in FIG. 2, fastening bolts 9 protruding from the airbag module 1 are provided on the plate surface of the side plate 3. The air bag module 1 is attached and fixed to the plate surface of the side plate 3 by inserting the nut 10 into the tightening bolt 9 through the received receiving hole.
[0024]
Further, one of the webbings 5 and 6 provided in the trim cover 4 is drawn into the cavity 8 of the back pad 7 from one side of the airbag module 1, and the other 6 is drawn from the front of the airbag module 1. The webbings 5 and 6 are assembled to the inner side of the back pad 7 by being wound around the side and pulled into the cavity 8 of the back pad 7.
[0025]
Next, the listing wires 11 and 12 which are provided in advance at the end portions of the bundlings 5 and 6 or after the bundlings 5 and 6 are assembled are entangled with each other inside the back pad 7.
[0026]
The listing wires 11 and 12 hook the hook portions 11f, 11g, 12f, and 12g on the axis of the latch member 13 as shown in FIG. 6a, and the hook portions 11f, 12f, and 11g as shown in FIG. 6b. , 12g are brought into contact with the valley bending portions 13a, 13b of the latching member 13 and engaged with the lock portions 11h, 12h, 11i, 12i to be entangled with each other.
[0027]
In the listing wires 11 and 12, the hook members 11f, 11g, 12f, and 12g are hooked on the axis of the latch member 13 and the lock members 11h, 12h, 11i, and 12i are engaged. They can be securely and securely entangled with each other so that they do not come off. As shown in FIG. 7 (partially shown), the force cloth 5 (6) is not displaced in the width direction by the shoulder 11d (12d), so that the air bag module 1 can be easily assembled so as to cover the entire area. .
[0028]
After assembling the force cloths 5 and 6, the trim cover 4 may be covered so as to enclose the front surface of the back pad 7 including the airbag module 1 as usual.
[0029]
In the air bag module-equipped sheet configured as described above, the two power cloths 5 and 6 are provided by sewing the seam allowance of the seam to be the breaking portion 40, and the entire air bag module 1 is directly covered with the power cloths 5 and 6. In order to wrap the airbag, the inflation pressure of the airbag is efficiently concentrated at the seam that forms the fracture portion 40 of the trim cover 4, and the airbag can be quickly inflated and deployed.
[0030]
【The invention's effect】
As described above, according to the airbag module equipment sheet according to the first aspect of the present invention, the support portion inserted into the end portion of the webbing with a length corresponding to the width of each end portion of the webbing, It is provided with a listing wire having an arm part that is bent in parallel from both sides, and a shoulder part in which an axis extending from the support part to the arm part is bent in a letter shape, and the shaft end of each arm part facing the listing wire is a side. At the back of the plate, the webbing is pulled inward from the cavity of the back pad and the air bag module is directly wrapped with the webbing. The air bag can be securely pulled and secured with the listing wire provided at the end, and the inflation pressure of the air bag can be efficiently concentrated with a blanket at the seam that becomes the breaking part of the trim cover. Promptly provided so as to be inflated and deployed.
[0031]
According to the airbag module equipment seat according to claim 2 of the present invention, the hook member in which the latch member of each listing wire is provided in the seat back frame, and the shaft end of each arm portion is bent in a substantially U shape, Each listing wire is provided with a lock portion where the shaft end of each hook portion is bent, and each listing wire that is turned to the back side of the side plate is hooked to the latching member by the hook portion, and each listing wire is mutually locked by the lock portion. By entanglement, the listing wires can be stably and reliably entangled so that the listing wires do not come off the retaining member.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an airbag module equipment sheet according to the present invention.
FIG. 2 is a partial cross-sectional view showing the seat back of FIG. 1;
FIG. 3 is an explanatory view showing a trim cover that covers the seat back of FIG. 1 together with a webbing.
4 is an explanatory view mainly showing a listing wire for pulling down the webbing of FIG. 3; FIG.
FIG. 5 is an explanatory view partially showing the entanglement structure of the listing wire in FIG. 3;
6A is an explanatory view showing the listing wire of FIG. 5 hooked on a latching member. FIG.
6b is an explanatory view showing the listing wires of FIG.
7 is an explanatory view showing the listing wire shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air bag module 2 Seat back frame 3 Side plate 4 Trim cover 40 Trim cover fracture | rupture part 5,6 Bending cloth 11,12 Listing wire 11a, 12a Supporting shaft part 11b, 11c, 12b, 12c of listing wire
Listing wire arms 11d, 11e, 12d, 12e
Listing wire shoulder 11f, 12f, 11g, 12g
Listing wire hooks 11h, 12h, 11i, 12i
Listing wire lock 13 Hook member

Claims (2)

An air bag module that is assembled so that it can be inflated and deployed with the gas pressure generated by the inflator, a trim cover that is formed with seams at the breaks associated with the inflating and deploying of the air bag, and one end of each end of the trim cover Two bundlings that are co-sewn by the seam that becomes the break part of the trim cover, and a listing wire that pulls and supports each bundling that is continuous from the seam that becomes the break part of the trim cover,
Place the air bag module in the cavity of the back pad and attach it to the side plate of the seat back frame, pull the power cloth inward from the cavity of the back pad and wrap the air bag module with the power cloth, and the power cloth In the air bag module equipped sheet that is tensioned and fastened with a listing wire that is entangled behind, and the entire back pad including the air bag module is encapsulated with a trim cover,
A support part inserted into the end part of the webbing with a length corresponding to the width of each end part of the webbing, an arm part that bends in parallel from both sides of the support part, and an axis extending from the support part to the arm part in a rectangular shape. A listing wire having a shoulder portion bent inwardly, the shaft ends of the opposing arm portions of the listing wire being entangled with each other behind the side plate, and each bundling is tension-fastened with the listing wire A seat equipped with an air bag module. Each listing wire has a latch member on the seat back frame, and each listing wire is provided with a hook portion in which the shaft end of each arm portion is bent in a substantially U shape, and a lock portion in which the shaft end of each hook portion is bent. 2. The airbag according to claim 1, wherein each listing wire to be turned to the back side of the side plate is hooked on the retaining member by a hook portion, and each listing wire is entangled with each other by a lock portion. Module equipment seat.

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