JP2014065431A - Air bag device attached body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air bag device attached bracket capable of simultaneously achieving an air bag device holding function and a shock absorbing function from an occupant side while securing a space for wire connection work to an inflator.SOLUTION: A shape surface part 45 is formed to be positioned on the occupant side of an inflator 28. A side face part 46 is formed to extend from both sides of the shape surface part 45 and be attached to the bottom plate part 31a of a holder 24 on both sides of the inflator 28. The side face part 46 sets a height D2 from the bottom plate part 31a of the holder 24 on both sides of the inflator 28 equal to or less than a projection side D1 of the inflator 28 from the bottom plate part 31a of the holder 24. An attaching surface part 47 is formed to be bent toward an opposite occupant side with respect to the shape surface part 45, and extend to be attached to the bracket 39 of a steering member 36.

Description

  The present invention relates to an attachment body of an airbag device for attaching the airbag device to a member to be attached.

  2. Description of the Related Art Conventionally, an airbag device for a passenger in a passenger seat disposed on an instrument panel of an automobile is known. The airbag device includes a case body as a box-shaped holding body, and a folded airbag is stored and held inside the case body, and at the bottom of the case body, An inflator for injecting gas for inflating the airbag is attached, and the opening on the upper side of the case body is covered with the cover body.

  In the airbag device, the bottom portion of the case body is attached to the steering member via an attachment bracket as an attachment body, and the opening is inclined so as to face the passenger seat occupant side, which is a protected object. When the automobile collides, the airbag is inflated by injecting gas from the inflator, the tear line, which is a fragile part provided in the cover body, is broken to form a protruding port, and the airbag is protruded from the protruding port. The impact applied to the occupant is alleviated by inflating and deploying in front of the occupant.

  With respect to the mounting bracket of such an airbag device, a mounting surface portion that is attached to the steering member, and a side surface portion that extends from both sides of the upper end side of the mounting surface portion and is positioned on both sides of the inflator and is attached to the bottom portion of the case body. The provided structure is known (for example, refer patent document 1).

JP 2009-298177 A (page 3-5, FIG. 1-2)

  By the way, a harness for electrical connection with a control circuit that controls the operation of the inflator is connected to the lower part of the inflator that protrudes downward from the bottom of the case body. Required around the bottom of the inflator. Therefore, it can be considered that the both side surfaces of the mounting bracket are sufficiently separated from the both sides of the inflator.

  However, the mounting bracket has a holding function for preventing the airbag (airbag device) itself from falling to the occupant side against an impact when the airbag is deployed, and on the occupant side when the airbag is not deployed. Since a function for absorbing an impact from a certain upper part is required, if the distance between the side surfaces is too large, it is not easy to structurally obtain the strength necessary for these functions.

  The present invention has been made in view of the above points, and an air bag capable of achieving both a function of holding an airbag device and a function of absorbing an impact from an object to be protected while securing a space for connection work to an inflator. An object of the present invention is to provide an attachment body for a bag device.

  The attachment body of the airbag device according to claim 1 includes a holding body having a bottom portion, an airbag held in a state of being folded on the holding body, and an outer side of the holding body from the bottom portion of the holding body. The bottom portion of the holding body of the airbag device including the inflator that is attached in a protruding state and has a wiring connected to the bottom and that supplies the airbag with gas for inflating and deploying the airbag is protected by the airbag. An attached body of an airbag device to be attached to a member to be attached so that the airbag faces the protected object side, and a shape surface portion located on the protected object side of the inflator, and from both sides of the shape surface portion It is attached to the bottom of the holding body on both sides of the inflator and extends to the side of the object to be protected. The inflator includes a side surface portion set to be not more than a projecting dimension from the bottom of the holding body, and a mounting surface portion that is bent and extends toward the object to be protected with respect to the shape surface portion and is attached to the mounted member. It is a thing.

  The attachment body of the airbag device according to claim 2 is the reinforcement body of the airbag device according to claim 1, wherein the attachment body is provided on the shape surface portion along a height direction intersecting with both sides of the shape surface portion. A bead portion is provided.

  The airbag apparatus mounting body according to claim 3 is the reinforcing body of the airbag apparatus mounting body according to claim 1 or 2, wherein the reinforcing reinforcing beads are continuously provided across the shape surface portion and both side surface portions. Part.

  The attachment body of the airbag device according to claim 4 is the attachment body of the airbag device according to any one of claims 1 to 3, wherein the shape surface portion is attached to a bottom portion of the holding body.

  According to the attachment body of the airbag device according to claim 1, the bottom portion of the holding body on both sides of the inflator of the side surface portion extending to the anti-protected object side with respect to the shape surface portion positioned on the protected object side of the inflator By making the height dimension from the bottom of the projection of the inflator holder below the bottom of the inflator, space for connection work can be secured on both sides of the bottom of the inflator. In addition, the side surfaces can be made as close as possible, the mounting body can be structurally reinforced, and the mounting surface can be protected against the shape surface by bending it to the side to be protected. When an impact is applied from the object side, the impact can be effectively absorbed by deformation at a position between the mounting surface portion and the shape surface portion. As a result, it is possible to achieve both the function of holding the airbag device and the function of absorbing impact from the protected object side.

  According to the attachment body of the airbag device according to claim 2, in addition to the effect of the attachment body of the airbag device according to claim 1, the reinforcing bead portion along the height direction intersecting the both side directions on the shape surface portion. By providing, the shape surface portion can be reinforced in the height direction, and the holding function of the airbag device can be further improved.

  According to the attachment body of the airbag device according to claim 3, in addition to the effect of the attachment body of the airbag device according to claim 1 or 2, the reinforcing bead portion for reinforcement across the shape surface portion and the both side surface portions. By providing continuously, a shape surface part and both side surface parts can be reinforced more reliably.

  According to the attachment body of the airbag device according to claim 4, in addition to the effect of the attachment body of the airbag device according to any one of claims 1 to 3, since the shape surface portion is attached to the bottom portion of the holding body, When the airbag is deployed to the protected object side, the holding body is securely held by the shape surface portion and each side surface portion extending from both sides of the shape surface portion to the anti-protection object side. The holding function can be further improved.

It is a side view which shows one Embodiment of the attachment body of the airbag apparatus of this invention, and the airbag apparatus attached to the to-be-attached part by this attachment body. It is a perspective view of a mounting body same as the above. It is a side view of a mounting body same as the above. It is a top view which shows the airbag apparatus which attached the attachment body same as the above from the downward direction. It is a perspective view which shows the airbag apparatus which attached the attachment body same as the above from the downward direction.

  Hereinafter, an embodiment of an attachment body of an airbag device of the present invention will be described with reference to the drawings.

  1 to 5, reference numeral 10 denotes an airbag device. The airbag device 10 is provided on an instrument panel in a vehicle interior as a vehicle that is a moving body, and serves as an object to be protected seated on a passenger seat. An airbag device 10 for a passenger in a passenger seat that protects a passenger to be protected is configured. In other words, the instrument panel is located in front of the passenger seat, and is disposed in the front part of the passenger compartment with the two sides being the vehicle width direction as the longitudinal direction. A windshield (not shown) as a windshield is located above the instrument panel. That is, the airbag device 10 is disposed so as to face the lower side of the windshield.

  The airbag device 10 includes a cover body (not shown) provided in a square opening provided in the instrument panel, and an airbag module 22 disposed on the back side of the cover body. The bag module 22 includes a holding body 24, an airbag 26 attached to the holding body 24 via a case body 25, a retainer (not shown), an inflator 28, and the like. The airbag device 10 includes control means and sensors (not shown) connected to the lower part of the inflator 28 via a connector harness H that is a connection body provided at the tip of the wiring C.

  The airbag device 10 is normally attached to the curved instrument panel so as to be inclined in an appropriate direction from the upper side to the rear side. (Arrow F direction), the rear side is the occupant side (Arrow B direction), and the vehicle width direction will be described as both side directions.

  The holding body 24 is also called a base or the like, and is a member to which a cover body is attached. The holding body main body 31 formed by pressing a metal plate and the holding body main body 31 are integrally formed by welding or the like, respectively. Attached (one and the other) attachment parts 32 and 33 are provided. Then, the holding body 24 avoids other members arranged in the instrument panel, and the airbag 26 is attached to the steering member 36 which is a member constituting the vehicle body via the mounting bracket 35 as the mounting body. It is fixed in an inclined manner at a predetermined angle with the side facing the occupant side rear side.

  The holding body 31 includes a planar (flat plate) bottom plate portion 31a which is a bottom portion of the holding body 24, and end plate portions 31b and 31b raised vertically from front and rear edges of the bottom plate portion 31a. It has a U-shape that opens upward in a side view. Further, although not shown in the drawing, a circular inflator mounting hole portion that is inserted and fitted to the upper side of the inflator 28, and the inflator 28 that is positioned around the inflator mounting hole portion are fixed to the substantially central portion of the bottom plate portion 31a. A plurality of, for example, four through holes are respectively opened.

  The attachment portions 32 and 33 are plate-like (one and the other) attachment portion main bodies 32a and 33a welded to the end plate portions 31b and 31b, respectively, and both side edges of the attachment portion main bodies 32a and 33a. The side plate portions 32b and 33b bent along both sides of the holding body 31 and the cover protruding from the upper edge of the attachment portions 32a and 33a to the side opposite to the airbag 26. A plurality of hook portions 32c and 33c (one and the other) that are locked to the lower part of the body are integrally provided. The side plate portions 32b and 33b are connected to each other by welding or the like. Therefore, the holding body 24 is substantially box-shaped by the holding body main body 31 and the attachment portions 32 and 33, and the bottom plate portion 31a, the end plate portions 31b and 31b (attachment portion main bodies 32a and 33a), and the side plate portion 32b. , 33b is the airbag housing portion.

  The steering member 36 includes a cylindrical steering member main body 38 extending along the vehicle width direction, and a bracket 39 as a mounted member extending forward from a front lower portion of the steering member main body 38. The bracket 39 includes a plate-like protruding plate portion 39a protruding forward from the steering member main body 38, and a plate-like attached plate portion 39b integrally formed on the upper side of the protruding plate portion 39a. It has one. The mounted plate portion 39b is a portion to which the mounting bracket 35 is fixed. A mounting hole (not shown) is opened in the central portion, extends along the vehicle width direction and the front-rear direction, and gradually downwards toward the front side. It is inclined to.

  The case body 25 is formed in a rectangular box shape and is fitted inside the holding body main body 31. Further, although not shown in the drawing, a circular inflator mounting hole portion for inserting and fitting the upper side of the inflator 28, and the inflator 28 located around the inflator mounting hole portion, are not shown in the approximate center of the bottom surface portion of the case body 25. A plurality of, for example, four through-holes are fixed to each other.

  The airbag 26 is formed into a bag shape by stitching together the base fabric, etc., and is held by the holding body 24 in a folded state and stored in the airbag storage portion, and an opening (not shown) is directed downward. The periphery of the opening is held and fixed to the bottom surface of the case body 25 and the bottom plate 31a of the holding body 24 using a retainer.

  Further, the inflator 28 is formed in a flat disk shape (columnar shape), and a substantially square flange portion 28a is projected from an outer peripheral portion in the vicinity of the central portion in the vertical direction (axial direction). Then, inflator attachment holes (not shown) are opened near the four corners of the flange portion 28a, and the inflator attachment holes are aligned with the through holes of the bottom plate portion 31a of the holding body 24, so that the inflator attachment holes and the through holes are aligned. The inflator 28 is fixed integrally with the mounting bracket 35 by inserting and tightening the mounting bolt 41 projecting from the retainer. Further, the lower portion 28b of the inflator 28 protrudes downward from the bottom plate portion 31a of the holding body 24 with a predetermined protruding dimension D1. In other words, the distance from the bottom plate portion 31a of the holding body 24 of the inflator 28 to the planar lower surface 28c which is the bottom portion (lower end portion) is the protruding dimension D1. Further, a pair of connecting portions 28d and 28d to which the connector harness H is connected are provided on the lower surface 28c of the inflator 28 so as to be adjacent to each other in the vehicle width direction (left-right direction). Then, the inflator 28 combusts the contained medicine or releases the gas stored by compression according to the control signal sent from the control means via the wiring C and the connector harness H, so that the upper portion Gas is supplied into the airbag 26 from a gas injection port (not shown) provided in the air bag 26.

  Further, the cover body is also called a lid, and is formed integrally with, for example, a synthetic resin, and is disposed on the instrument panel so as to be substantially flush and exposed to the outside, and on the back side of the front panel portion. And a leg piece portion protruding from a certain rear surface side and locked to the hook portions 32c and 33c of the holding body 24. And the front plate part can also be called a covering part, has a flat surface or a gently curved surface, is a fragile part that easily breaks from other parts, that is, a tear line that is a planned breaking part, and other parts as necessary The front and rear hinge portions formed so as to be bent more easily form a pair of front and rear door planned portions and a frame portion surrounding these door predetermined portions. Furthermore, the non-deployment part is comprised by this frame part and leg piece part.

  The cover body is attached to the holding body 24 by engaging the leg pieces with the hook portions 32c and 33c of the holding body 24 with the leg piece fitted to the outer periphery of the holding body 24. The top portion of the airbag housing portion, that is, the folded airbag 26 is covered with the portion of the door portion of the front plate portion, which is positioned on the instrument panel, and the surface side of the instrument panel and the surface side of the cover body are flush with each other. That is, it arrange | positions so that it may continue smoothly.

  The mounting bracket 35 is also called a lower bracket or the like. For example, the mounting bracket 35 is integrally formed by pressing a metal plate or the like, and the airbag device 10 is attached to the bracket 39 (attached plate portion 39b) of the steering member 36. A shape surface portion 45 located on the occupant side, that is, the rear side, side surface portions 46 and 46 extending from both side edges of the shape surface portion 45 to the front side on the opposite side of the occupant, and downward from the lower end portion of the shape surface portion 45 And an attachment surface portion 47 that bends and extends toward the front side, which is the side opposite to the occupant. Further, the mounting bracket 35 is formed with reinforcing bead portions 48, 48 across the shape surface portion 45 and the attachment surface portion 47, and for reinforcement across the shape surface portion 45 and the side surface portions 46, 46. Reinforcement bead portions 49, 49 are formed. The mounting bracket 35 has, for example, a symmetrical shape. The thickness (plate thickness) of the mounting bracket 35 is, for example, about 2 mm in the present embodiment, but it may be, for example, about 1.4 mm to 2.3 mm in accordance with the performance of the vehicle. it can.

  The shape surface portion 45 should also be referred to as an attachment body (bracket body), and extends along the vehicle width direction (left-right direction) with the airbag device 10 attached to the bracket 39 (attached plate portion 39b) of the steering member 36. The lower portion 28b of the inflator 28 that protrudes downward from the bottom plate portion 31a of the holding body 24 is spaced apart and opposed to the rear side. Further, on the upper edge portion of the shape surface portion 45, a flat plate-like extension portion 45a is bent and extended substantially vertically to the front side which is the anti-occupant side, and at the distal end side of the extension portion 45a. A tongue-shaped attachment piece 45c having attachment holes 45b and 45b attached to the bottom plate part 31a of the holding body 24 together with the inflator 28 (flange part 28a) on both side edges of a certain front end, 45c extends toward the front. Accordingly, the mounting bolts 41 and 41 are inserted into the mounted holes 45b and 45b and are fastened and fixed to the bottom plate portion 31a of the holding body 24, so that the upper portion (extending portion 45a) of the shape surface portion 45 is attached to the holding body 24. It is fixed to the bottom plate portion 31a.

  Further, the side portions 46, 46 extend along the front-rear direction in a state where the airbag device 10 is attached to the bracket 39 (attached plate portion 39b) of the steering member 36, that is, are formed in a flat plate shape that is long in the front-rear direction. Are bent and protruded substantially vertically forward with respect to the shape surface portion 45, and are spaced apart and opposed to the left and right sides of the lower portion 28b of the inflator 28 protruding downward from the bottom plate portion 31a of the holding body 24. . Accordingly, the mounting bracket 35 has a U-shape with a front surface opened in a plan view as viewed from above or below, by the shape surface portion 45 and the side surface portions 46 and 46. Further, each side surface portion 46 is inclined side surface portion 46a as a protruding side surface portion that protrudes slightly in an upward direction with respect to the surface direction of the shape surface portion 45 from both side edge portions of the shape surface portion 45 to the front. Side protrusions 46b as inflator facing portions located on both sides of the inflator 28 are integrally provided from the front end, which is the tip of the inclined side surface 46a, protruding substantially perpendicular to the surface direction of the shape surface portion 45. A tongue-like side surface mounting piece provided with a mounting hole 46c attached to the bottom plate portion 31a of the holding body 24 together with the inflator 28 (flange portion 28a) at the upper edge portion of each side surface protruding portion 46b. The part 46d is bent and extended substantially vertically toward the airbag 26 side.

  Here, the height dimension (vertical dimension) D2 from the bottom plate portion 31a of the holding body 24 on both sides of the inflator 28 of each side surface portion 46, in other words, the height dimension D2 at the side surface protruding portion 46b is the holding body 24. This is set to a projection dimension D1 or less (D2 ≦ D1) below the lower surface 28c of the inflator 28 with respect to the bottom plate portion 31a, and is smaller than this projection dimension D1 (D2 <D1) in this embodiment. Accordingly, the lower edge portions of the side surface portions 46 are located above the lower surface 28c of the inflator 28 in a state where the airbag device 10 is attached to the bracket 39 (attached plate portion 39b) of the steering member 36. In other words, the lower surface 28c of the inflator 28 protrudes downward from the lower edge portion of the side surface protruding portion 46b of each side surface portion 46 in a side view from the vehicle width direction (left and right direction). Further, the upper and lower edge portions of each inclined side surface portion 46a are separated from the upper and lower ends of the shape surface portion 45, respectively. That is, the height dimension of each inclined side surface part 46a is set smaller than the height dimension of the shape surface part 45.

  The mounting surface portion 47 is formed in a flat plate shape and is bent forward with respect to the shape surface portion 45 to form an obtuse predetermined angle θ (> 90 °). ) Protruding from the center of the tongue. That is, the shape surface portion 45 and the attachment surface portion 47 are formed in a square shape in a side view as viewed from the vehicle width direction (left-right direction). Since the shape surface portion 45 and the attachment surface portion 47 are bent in this way, the attachment bracket 35 is located at the base end side of the attachment surface portion 47, that is, at the upper end portion that is a connection portion with the shape surface portion 45, and the distal end of the attachment surface portion 47. The side (lower end side) moves upward relatively with respect to the shape surface portion 45 and is not easily deformed in the direction in which the angle θ increases, and the tip end side (lower end side) of the mounting surface portion 47 is the shape surface portion. It is structured to be easily deformed in a direction in which it moves relatively downward with respect to 45 and approaches, that is, in a direction in which the angle θ decreases.

  Further, the attachment surface portion 47 has an upper end portion that is a connection portion with the shape surface portion 45 in a state where the airbag device 10 is attached to the bracket 39 (attached plate portion 39b) of the steering member 36, rather than the lower surface 28c of the inflator 28. Located below. For this reason, the attachment surface portion 47 is positioned below the rear side of the inflator 28 in a state where the airbag device 10 is attached to the steering member 36. An attachment hole 47a for attaching the attachment surface portion 47 to the bracket 39 (attached plate portion 39b) of the steering member 36 is opened at a substantially central portion of the attachment surface portion 47. Then, with this mounting surface portion 47 along the bracket 39 (attached plate portion 39b) of the steering member 36, bolts 51 are inserted into the mounting holes 47a and fastened and fixed to the bracket 39 (attached plate portion 39b). Thus, the mounting bracket 35 is fixedly attached to the steering member 36.

  In addition, a folded portion 47b that is bent upward extends at the center of the lower end, which is the tip of the mounting surface portion 47.

  The bead portions 48 and 48 are each formed in a groove shape along a vertical direction that is a height direction intersecting with both sides of the shape surface portion 45, and the vehicle width direction (left and right) of the shape surface portion 45 and the mounting surface portion 47 The upper end portion is located at the upper end portion (connecting portion with the extending portion 45a) of the shape surface portion 45, and the lower end portion is the connection portion between the shape surface portion 45 and the mounting surface portion 47. It is located in the vicinity of the upper end portion of the mounting surface portion 47 beyond. Further, these bead portions 48, 48 are formed by deforming the plate material constituting the shape surface portion 45 and the attachment surface portion 47, that is, the metal plate constituting the attachment bracket 35 into a groove shape. Projecting to the front side of the surface portion 47.

  The reinforcing bead portions 49, 49 are each formed in a groove shape from the vicinity of the center in the height direction of the shape surface portion 45 along a substantially horizontal direction intersecting the height direction. It is continuous from the vicinity of both side edges to the substantially middle position in the front-rear direction of the side surfaces 46, 46. That is, these reinforcing bead portions 49, 49 are located at one end side at the center in the height direction of the shape surface portion 45 and behind the mounting piece portions 45c, 45c, and at the other end side, the inclined side surface portion 46a of the side surface portions 46, 46. , 46a and the side protrusions 46b, 46b beyond the connecting portion, are located in the vicinity of the rear ends of the side protrusions 46b, 46b. Further, these reinforcing bead portions 49, 49 are formed by deforming the plate material constituting the shape surface portion 45 and the side surface portions 46, 46, that is, the metal plate constituting the mounting bracket 35 into a groove shape. Projecting to the front side at the position of, and projecting to the airbag 26 side at the positions of the side surfaces 46 and 46.

  When attaching the airbag device 10 to the steering member 36, first, the upper side of the inflator 28 is inserted and fitted into the inflator attachment hole portion of the bottom plate portion 31a of the holding body 24 of the airbag device 10. Next, the inflator mounting holes of the inflator 28 are aligned with the through holes of the bottom plate portion 31a of the holding body 24, and the mounted holes 45b and 46c of the mounting bracket 35 are aligned, and these mounted holes 45b, 46c, the retainer mounting bolt 41 inserted into the inside of the airbag 26 is inserted through the inflator mounting hole and the through hole of the holding body 24 and the case body 25 to insert the bottom plate of the holding body main body 31 of the holding body 24. Project downward to the part 31a and tighten. As a result, the inflator 28 and the mounting bracket 35 are integrally fixed to the bottom plate portion 31a of the holding body 24. In this state, the mounting bracket 35 is positioned such that the shape surface portion 45 is spaced apart from the front side of the lower portion 28b of the inflator 28, and the side surface portions 46 and 46 are located above the lower surface 28c of the lower portion 28b of the inflator 28. The mounting surface portion 47 is spaced apart and positioned on the lower front side of the lower portion 28b (lower surface 28c) of the inflator 28.

  Then, the inflator that brings the mounting bracket 35 together with the airbag device 10 integrally fixing the mounting bracket 35 to the mounting position in the vehicle, for example, the inside of the instrument panel, and is exposed downward from the bottom plate portion 31a of the holding body 24. The connector harness H at the tip of the wiring C electrically connected to the control means and the sensor side is inserted and connected to each connection portion 28d on the lower surface 28c of 28. At this time, since the side surface portions 46 and 46 of the mounting bracket 35 are located above the lower surface 28c of the inflator 28, the side surface portions 46 and 46 may hinder the connection work of the connector harness H, that is, the connection work. Absent.

  Thereafter, the mounting hole 47a of the mounting surface portion 47 of the mounting bracket 35 is aligned with the mounting hole of the mounting plate portion 39b of the bracket 39 of the steering member 36, and the bolt 51 is inserted across the mounting hole 47a and the mounting hole. As a result, the mounting bracket 35 is fixed to the bracket 39 of the steering member 36, and the airbag device 10 is fixed to the bracket 39 of the steering member 36 via the mounting bracket 35. In this state, in the airbag device 10, the cover body is fitted into the opening of the instrument panel, and the airbag 26 side is inclined to the rear side that is the occupant side. Further, the mounting bracket 35 has a mounting surface portion 47 inclined downward to the front side along the mounted plate portion 39b of the bracket 39, and a shape surface portion 45 upward to the rear side along the protruding direction of the airbag 26. Inclined.

  When the airbag 26 of the airbag device 10 is not inflated and deployed, for example, when an impact is applied to the instrument panel from the occupant side, the impact is directed downward with respect to the airbag device 10. External force (arrow X) is applied. Then, stress concentrates on the connecting portion between the shape surface portion 45 of the mounting bracket 35 and the mounting surface portion 47, and at this position, the airbag device 10 side of the mounting bracket 35, that is, the shape surface portion 45 and the side surface portion 46 side with respect to the mounting surface portion 47. Bent toward the front lower side, that is, to the side opposite to the occupant (shown by an imaginary line in FIG. 3), in other words, by deforming so that the angle θ formed by the shape surface portion 45 and the mounting surface portion 47 becomes smaller. , Absorbs and reduces shock (shock absorbing function).

  Further, when a vehicle equipped with the airbag device 10 collides, the control means activates the inflator 28 based on the impact detected by the sensor, and the airbag 26 is inflated by the gas supplied from the inflator 28. The tear line of the cover body is broken by the bulging pressure. Then, front and rear door portions are formed from the planned door portion, and these door portions are deployed forward and backward with the hinge portion as a fulcrum to form a projecting port, and the airbag 26 is deployed forward of the occupant from this projecting port. The airbag 26 inflated and deployed in this way can quickly restrain and protect the occupant thrown forward.

  At this time, external force (arrow Y) is applied to the mounting bracket 35 toward the rear upper side, that is, the front direction, which is the deployment direction of the airbag 26, but the mounting bracket 35 includes the shape surface portion 45 and the side surface portions 46 as holding bodies. 24, each of the shape surface portion 45 and each side surface portion 46 is provided with a bead portion 48 and a reinforcing bead portion 49. Is strongly held in a U shape at the rear and both sides by the shape surface portion 45 and the side surface portions 46. Therefore, the mounting bracket 35 is not easily deformed so that the angle θ formed by the shape surface portion 45 and the mounting surface portion 47 is increased, and the twisting force generated by the deployment of the airbag 26 (one side surface portion 46 is replaced with the other side surface portion). In order to securely hold the holding body 24 even against the force that is to move rearward and upward from 46), the airbag device 10 is maintained in a state of being held without being rolled toward the occupant side (holding). function).

  Thus, according to the present embodiment, the height dimension D2 on both sides of the inflator 28 of the side surface portions 46, 46 extending toward the occupant side with respect to the shape surface portion 45 located on the occupant side of the inflator 28 is set. By setting the protrusion dimension D1 or less of the bottom plate portion 31a of the holding body 24 of the inflator 28, space for connection work can be secured on both sides of the lower surface 28c of the inflator 28. Further, since the side surface portions 46 and 46 do not interfere with the connection of the inflator 28, the side surface portions 46 and 46 can be brought as close as possible, and the mounting bracket 35 can be structurally reinforced.

  That is, when the connector harness H at the tip of the wiring C is connected to the connecting portions 28d and 28d on the lower surface 28c of the inflator 28, the operator's hand approaches the lower surface 28c of the inflator 28 with the hand grasping the connector harness H. Therefore, a space is required particularly on both sides of the lower surface 28c of the inflator 28. In this respect, in the present embodiment, since the lower edge portions of the side surface portions 46, 46 are located above the lower surface 28c of the inflator 28, the lower surface portion 28c of the inflator 28 is independent of the position of the side surface portions 46, 46. Sufficient space can be secured on both sides, and the side portions 46 and 46 do not get in the way during the connection work. Therefore, in the mounting bracket 35 of the present embodiment, the side surface portions 46, 46 can be brought closer to both sides of the inflator 28, that is, the distance between the side surface portions 46, 46 can be made as close as possible. The strength can be structurally improved and the holding function of the airbag device 10 can be secured. Therefore, the mounting bracket 35 can be structurally (shape-wise) improved in strength without using a separate member or the like, so that it can be manufactured at a low cost and has a compact shape in which the side surfaces 46 and 46 are brought close to each other. , Lightening is possible.

  In particular, as in the inflator 28 of the present embodiment, when a plurality of connecting portions 28d, 28d are provided in the vehicle width direction, the connector harness H is connected to the vicinity of both side edges of the inflator 28. Although the operator's hand holding the harness H is likely to protrude laterally beyond the outline of the inflator 28 and requires a larger space on both sides of the lower surface 28c of the inflator 28, the mounting bracket 35 of the present embodiment Since the lower edge portions of the portions 46 and 46 are located above the lower surface 28c of the inflator 28, even when the inflator 28 having the connection portions 28d and 28d is used, it can be easily handled.

  In addition, the mounting bracket 35 is mounted when an impact is applied from the occupant side by extending the mounting surface portion 47 to the opposite occupant side with respect to the shape surface portion 45 while structurally improving the strength. The impact can be effectively absorbed by the deformation at the connecting portion between the surface portion 47 and the shape surface portion 45.

  As a result, it is possible to achieve both the holding function of the airbag device 10 and the function of absorbing impact from the occupant side.

  In addition, by providing bead portions 48 and 48 for reinforcement along the height direction on the shape surface portion 45, the shape surface portion 45 is reinforced in the height direction, and the holding function of the airbag device 10 of the mounting bracket 35 is further improved. it can.

  Furthermore, by providing reinforcing bead portions 49, 49 for reinforcement across the shape surface portion 45 and both side surface portions 46, 46 in a direction intersecting the height direction, the shape surface portion 45 and the side surface portions 46, 46 can be reinforced more reliably.

  Then, by attaching the shape surface portion 45 and both side surface portions 46, 46 to the bottom 31a of the holding body main body 31 of the holding body 24, when the airbag 26 is deployed to the occupant side, the holding body 24 is moved to the shape surface portion 45. In addition, the side surface portions 46, 46 extending from both sides of the shape surface portion 45 to the side opposite to the occupant are securely held in a U shape, and the holding function of the mounting bracket 35 for the airbag device 10 can be further improved. In addition, the shape surface portion 45 is reinforced in the height direction and the direction intersecting the height direction by the bead portion 48 and the reinforcement bead portion 49, respectively, so that the airbag device 10 is strongly held by the shape surface portion 45. it can.

  In the above-described embodiment, the bead portions 48 and 48 and the reinforcement bead portions 49 and 49 may not be provided as long as the strength of the mounting bracket 35 can be sufficiently secured.

  Further, the mounting bracket 35 can be applied not only to the mounting of the airbag device 10 for a passenger on the passenger seat provided in the instrument panel, but also to the mounting of an airbag device installed at an appropriate position such as an automobile or other moving body. . For example, the present invention can be applied to attachment of an airbag device that is arranged behind a rear seat and facing a rear glass that is a windshield.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used, for example, as an attachment body of an airbag device for attaching an airbag device for a passenger seat of an automobile to the vehicle body side.

10 Airbag device
24 Holder
26 Airbag
28 Inflator
31a Bottom plate that is the bottom
35 Mounting bracket as mounting body
39 Bracket as mounted member
45 Shaped surface
46 Side
47 Mounting surface
48 Bead section
49 Reinforcement bead C wiring

Claims (4)

A holding body having a bottom portion, an airbag held in a folded state on the holding body, and a wiring connected to the bottom portion attached to the holding body so as to protrude outward from the bottom portion of the holding body. In addition, the airbag faces the protected object side protected by the airbag at the bottom of the holding body of the airbag apparatus having an inflator that supplies the airbag with a gas for inflating and deploying the airbag. An attachment body of an airbag device to be attached to a member to be attached,
A shape surface portion located on the protected object side of the inflator;
Extending from both sides of the shape surface portion to the side to be protected and attached to the bottom of the holding body on both sides of the inflator, the height dimension from the bottom of the holding body on both sides of the inflator A side surface set to be not more than a protruding dimension from the bottom of the holding body;
An attachment body for an airbag apparatus, comprising: an attachment surface portion that is bent and extends toward the object to be protected with respect to the shape surface portion, and is attached to the attachment member. The attachment body for an airbag device according to claim 1, further comprising: a reinforcing bead portion provided on the shape surface portion along a height direction intersecting with both sides of the shape surface portion. The attachment body for an airbag device according to claim 1 or 2, further comprising a reinforcing bead portion for reinforcement provided continuously over each of the shape surface portion and both side surface portions. The shape body portion is attached to the bottom portion of the holding body. The attachment body for an airbag device according to any one of claims 1 to 3.

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