JP2014113883A - Instrument panel which has air bag door integrally - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument panel which has an air bag door integrally which can control or prevent the air bag for a front passenger seat suffering damage from the edge of insert members fractured when an air bag door is decompressed.SOLUTION: In the air bag door of a passenger side air bag equipment, the tear intermediate part 58H of an insert side tear part 58 formed in an insert member 18 is constituted by a perforation-like slit 60. The outside edge 60A in a longitudinal direction of one side of adjacent slit 60 and the outside edge 60B in a longitudinal direction of another side of adjacent slit 60 are arrayed to face each other in front-back direction of a vehicle via a connecting part 62 which connects both in front-back direction of the vehicle.

Description

  The present invention relates to an instrument panel having an airbag door integrally.

The following Patent Document 1 discloses an invention related to an airbag door structure. Briefly, a long hole is formed in the door base material along the longitudinal direction of the vehicle, and a rivet is inserted into the long hole and caulked so that the insert member is connected to the door base material so as to be relatively movable. Yes. When the airbag door including the door base material, the insert member, and the skin is deployed in the vehicle front-rear direction, when the hinge portion of the door base material and the insert member interfere with each other, the insert member Thus, the relative movement in the vehicle front-rear direction suppresses interference between the airbag door and the hinge portion in the latter stage of deployment of the airbag door.
JP 2009-208731 A

  By the way, for example, when a genuine leather cover is used as the skin of an instrument panel, a configuration in which the genuine leather cover is bonded to an insert member made of a hard resin is generally employed so that deformation does not occur due to shrinkage of the genuine leather cover. . When the above prior art is applied to this type of instrument panel, the deployed airbag door side insert member relatively moves in the vehicle front-rear direction, and therefore the interference between the broken door side insert member and the hinge portion Can be suppressed. However, no particular consideration is given to the contact between the broken edge of the base-side insert member and the passenger seat airbag.

  In view of the above facts, the present invention is an instrument that integrally includes an airbag door that can suppress or prevent the passenger airbag from being damaged from the edge of the insert member that is broken when the airbag door is deployed. The purpose is to obtain a mental panel.

  An instrument panel integrally including an airbag door according to the present invention as defined in claim 1 is made of a soft resin, and includes a door base having a pair of front and rear door portions that are deployed in the vehicle front-rear direction via a pair of front and rear hinge portions. And a door skin that is spaced apart from the door base material and forms a design surface, and is made of a hard resin, and is disposed between the door base material and the skin and the door base material. And a tier portion formed along the outer shape of the door portion including a lateral tier portion formed in a perforation shape along the vehicle width direction corresponding to a boundary portion between the pair of front and rear door portions. When the airbag member for the passenger seat is inflated and deployed, the edge formed by breaking the connecting portion connecting the adjacent slits in the lateral tier portion is kept away from the airbag for the passenger seat. Or the passenger-seat airbag to the edge is provided with a bag protection means for inhibiting the contact.

  An instrument panel integrally having an airbag door according to the present invention as defined in claim 2 is the arrangement according to claim 1, wherein the bag protection means is arranged in the longitudinal direction of one slit adjacent to the lateral tier portion. The adjacent slits are arranged so as to be shifted from each other so that the end portion and the end portion in the longitudinal direction of the other slit face each other in the vehicle front-rear direction via the connecting portion.

  The instrument panel integrally having an airbag door according to the present invention as defined in claim 3 is the arrangement according to claim 2, wherein the longitudinal end of the one slit is the longitudinal end of the other slit. It is bent in an L shape toward the side.

  An instrument panel integrally having an airbag door according to a fourth aspect of the present invention is the arrangement according to the first aspect, wherein the door skin is a genuine leather skin and along the lateral tear portion. A skin side lateral tear portion is formed, and further, the end portions of the genuine leather skin are sewn with a suture thread that can be broken by a bag inflation pressure of a predetermined value or more, and the sewing portion is sewn to the insert member side. The skin side tier portion is configured by being arranged toward the vehicle, and the bag protection means is arranged by shifting the lateral tier portion to the vehicle rear side with respect to the skin side lateral tier portion. It is configured.

  The instrument panel integrally including the airbag door according to the present invention described in claim 5 is the arrangement according to claim 1, wherein the bag protection means includes a front end portion of the door portion disposed on the vehicle rear side, It is configured by shifting to the vehicle front side with respect to the lateral tier portion.

  The instrument panel integrally having an airbag door according to the present invention described in claim 6 is the arrangement according to claim 1, wherein the bag protection means is a position where the slit is formed in the insert member and the door base material. A concave portion is formed on the side so that the surface has a convex curved surface.

  According to the first aspect of the present invention, when the passenger seat airbag starts inflating at the time of frontal collision or prediction of frontal collision of the vehicle, the inflation pressure acts on the rear surfaces of the pair of front and rear door portions of the door base material. . When this expansion pressure exceeds a predetermined value, the bag expansion pressure also acts on the insert member via the door base material, so that the insert member includes a lateral tier portion formed in a perforated shape. Cleavage along. Further, the door skin is cleaved along with the cleavage of the insert member, so that the door base material, a part of the insert member and the door skin become an airbag door, and the vehicle front side and the vehicle centering on the hinge portion of the door base material Expand to both sides. As a result, the passenger seat airbag is inflated into the passenger compartment and restrains the upper body of the passenger seated in the passenger seat.

  Here, when the insert member is cleaved along the perforated lateral tear portion, the joint portion that connects the adjacent slits is broken. Therefore, an edge due to burrs is formed at the portion where the connecting portion is formed.

  However, in the present invention, when the passenger airbag is inflated and deployed, the edge formed by breaking the connecting portion connecting adjacent slits in the lateral tier portion is moved away from the passenger airbag. Bag protection means is provided for inhibiting the passenger seat airbag from coming into contact with the edge. For this reason, when the passenger airbag is inflated and deployed, the protection means prevents the passenger airbag from being moved away from the edge, or prevents the passenger airbag from coming into contact with the edge. Accordingly, the passenger seat airbag is suppressed or prevented from being in strong contact with the edge.

  According to the second aspect of the present invention, the longitudinal end of one slit adjacent to the lateral tear portion and the longitudinal end of the other slit face each other in the longitudinal direction of the vehicle via the connecting portion. The adjacent slits are arranged so as to be shifted from each other. In this case, the cleavage proceeds by breaking the connecting portion disposed between the longitudinal end portion of one slit and the longitudinal end portion of the other slit in the longitudinal direction of the vehicle. As a result, when the airbag door is deployed, the edge is not formed at the tip of the insert member along the vehicle width direction, but the edge is formed at the position of the connecting portion along the vehicle front-rear direction. That is, according to the present invention, the passenger seat airbag is moved away from the edge by changing the direction in which the edge is formed from the vehicle width direction to the vehicle longitudinal direction.

  According to the third aspect of the present invention, since the end in the longitudinal direction of one slit is bent in an L shape toward the end in the longitudinal direction of the other slit, the tip of the bent portion And an edge is formed at the position of the connecting portion arranged between the end of the other slit in the longitudinal direction. That is, an edge is formed at a position deeper from the tip of the insert member. Therefore, the passenger seat airbag is further away from the edge.

  According to the fourth aspect of the present invention, since the lateral tear portion is disposed to be shifted toward the vehicle rear side with respect to the skin side lateral tear portion, the airbag door disposed on the vehicle rear side is the rear side of the vehicle. When deploying to the side, the edge formed at the tip of the insert member in the airbag door is covered (covered) by the tip of the door skin. Accordingly, the passenger seat airbag is prevented from coming into contact with the edge.

  In addition, when the airbag door is deployed, it is conceivable that the passenger-seat airbag may wrap around the door skin. In this case, in the present invention, the front end portion of the door skin is interposed between the edge of the insert member and the passenger seat airbag, so that the passenger seat airbag does not need to contact the edge directly.

  According to the fifth aspect of the present invention, since the front end portion of the door portion disposed on the vehicle rear side is shifted to the vehicle front side with respect to the lateral tier portion, the door portion is located on the vehicle rear side. When deploying to the side, the front end portion of the door portion is positioned on the vehicle front side from the edge formed at the front end portion of the insert member. For this reason, although the passenger seat airbag is in strong contact with the tip of the door portion, it is not in strong contact with the edge formed at the tip of the insert member. That is, the passenger seat airbag is prevented from coming into contact with the edge.

  When the passenger seat airbag is inflated and deployed, the passenger seat airbag first contacts the door portion of the airbag door. In this case, in the present invention, since the front end portion of the door portion disposed on the vehicle rear side is disposed so as to be shifted toward the vehicle front side with respect to the lateral tier portion, the door portion serves as a wall, and the passenger seat air It becomes difficult for the bag to contact the edge of the insert member.

  According to the sixth aspect of the present invention, when the slit is cleaved along the lateral tear portion of the insert member, an edge due to breakage is formed at the connecting portion between the slits. Here, in the present invention, since the concave portion is formed so that the surface of the door base material side is a convex curved surface at the position where the slit is formed in the insert member, it is formed at the joint portion of the lateral tear portion that has been cleaved. A convex curved surface part is located at a position close to the edge. Therefore, when the passenger seat airbag is inflated and deployed, the airbag door is deployed while hitting the convex curved surface portion, so that the passenger seat airbag is inhibited from coming into contact with the edge. Thereby, it is suppressed or prevented that a passenger's seat airbag contacts the edge strongly.

  Moreover, the front end part of the door part arrange | positioned at the vehicle rear side may refrain from the vehicle rear side rather than the formation position of the tear part of an insert member. In this case, when the passenger airbag is inflated and deployed, the passenger airbag may first contact the door portion of the airbag door and then contact the tip of the insert member. Even in such a case, in the present invention, since the concave portion is formed so that the surface on the door base material side is a convex curved surface at the position where the slit is formed in the insert member, the convex curved surface portion is described in claim 5. It serves as the front end of the door portion in the present invention, and the convex curved surface portion serves as a wall, so that the passenger seat airbag is less likely to contact the edge of the insert member.

  As described above, the instrument panel integrally including the airbag door according to the first aspect of the present invention is such that the passenger airbag is damaged from the edge of the insert member that is broken when the airbag door is deployed. It has the outstanding effect that it can suppress or prevent receiving.

  The instrument panel integrally having the airbag door according to the present invention as set forth in claim 2 can obtain the above-mentioned effect only by changing the arrangement of the slits, and therefore has an excellent effect of not increasing the number of parts and increasing the cost. Have

  The instrument panel having an airbag door according to the present invention as claimed in claim 3 is more effective in that the passenger airbag is damaged from the edge of the insert member that is broken when the airbag door is deployed. It has an excellent effect that it can be suppressed or prevented.

  The instrument panel integrally including the airbag door according to the present invention described in claim 4 is an insert member that is broken when the airbag door is deployed even when the lateral tear portion is formed in a straight line. It is possible to suppress or prevent the passenger airbag from being damaged from the edge of the passenger seat, particularly when the passenger airbag has been turned around to the design side of the airbag door. It has an excellent effect that it can be directly protected from.

  In the instrument panel having the airbag door according to the present invention as claimed in claim 5 and claim 6 in an integrated manner, even when the lateral tear portion is formed in a straight line, when the airbag door is deployed, It is possible to suppress or prevent the passenger airbag from being damaged from the edge of the broken insert member, and particularly to protect the passenger airbag directly from the edge when the passenger airbag is inflated and deployed. It has an excellent effect of being able to.

It is a partial fracture perspective view showing the whole instrument panel composition which has an airbag door concerning a 1st embodiment integrally. It is a perspective view which shows the airbag door retainer shown by FIG. It is a top view which shows the insert side tear part formed in the insert member shown by FIG. FIG. 3 is an enlarged longitudinal sectional view of a passenger seat airbag device in a non-actuated state. FIG. 5 is an enlarged longitudinal sectional view showing an airbag door on the vehicle rear side shown in FIG. 4 in an enlarged manner. FIG. 6 is a longitudinal sectional view showing a state in which the passenger seat airbag device is activated from the state shown in FIG. 5 and the airbag door on the vehicle rear side is being deployed. It is a longitudinal cross-sectional view which shows the state which the airbag door of the vehicle rear side was fully expand | deployed from the state shown by FIG. (A) is a principal part enlarged plan view which shows the state before the tear of an insert side tier part, (B) is a principal part enlarged plan view which shows the state after the tear of an insert side tier part. (A) is a principal part enlarged plan view which shows the state before the tear of the corner part of an insert side tier part, (B) is a principal part enlarged plan view which shows the state after the tear of the corner part of an insert side tier part is there. (A) is proportionally related, and is a principal part enlarged plan view which shows the state before the tear of the insert side tier part, (B) is a principal part enlarged plan view which shows the state after the tear of the insert side tier part. . The principal part of 2nd Embodiment is shown, (A) is a principal part enlarged plan view which shows the state before the tear of an insert side tear part, (B) shows the state after the tear of an insert side tear part It is a principal part enlarged plan view. (A) has shown the principal part of 3rd Embodiment, and is a principal part expanded longitudinal cross-sectional view which shows the state which cut | disconnected a pair of front and rear airbag doors in the vehicle front-back direction, (B) is 4th Embodiment. It is a principal part expansion longitudinal cross-sectional view which shows the state which showed the principal part and cut | disconnected the pair of front and rear airbag doors in the vehicle front-back direction, (C) has shown the principal part of 5th Embodiment, It is a principal part expanded longitudinal sectional view which shows the state which cut | disconnected the airbag door of this in the vehicle front-back direction.

[First Embodiment]
Hereinafter, a first embodiment of an instrument panel integrally having an airbag door according to the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow IN indicates the vehicle width direction inner side.

<Overall configuration of instrument panel with integrated airbag door>
As shown in FIGS. 1 and 4, the airbag door 12 of the passenger seat airbag device 10 is provided on the passenger seat side of the instrument panel 70. The airbag door 12 has a four-layer structure including a door base material 14, a door skin 16, an insert member 18, and a cushion material 20. It should be noted that the parts other than the part where the airbag door is disposed in the instrument panel 70 are arranged on the same plane as the door skin 16 so as to constitute the design surface of the instrument panel 70, the insert member 18, and the cushion material. 20 three-layer structure. In the following, description will be made mainly on the portion where the airbag door 12 is disposed.

  As shown in FIG. 2, the door base material 14 includes a base material side tier portion 22 as a tier portion that is ruptured by receiving an inflation pressure of a predetermined value or more from the passenger seat airbag 46, and the base material side tier After being cleaved along the portion 22, it is configured to be deployable to both the vehicle front side and the vehicle rear side around the hinge portions 24 and 26.

  More specifically, as shown in FIGS. 2 and 4, the door base material 14 is integrally formed inside a flange portion 30 formed in a rectangular frame shape at the upper part of the airbag door retainer 28. The door base material 14 is made of a soft resin such as TPO (olefin-based thermoplastic elastomer). And as this door base material 14, it is formed in the rectangular flat plate shape by planar view, and the door base material front part 14F which expand | deploys to the vehicle front side, and is similarly formed in rectangular flat plate shape by planar view, and expand | deploys to the vehicle rear side. A door base material rear portion 14R is provided. The door base front part 14F and the door base rear part 14R correspond to a “front and rear pair of doors” in the present invention. The door base member front portion 14F is configured to be deployable forward of the vehicle around a hinge portion 24 having a U-shaped longitudinal section when cut along the vehicle longitudinal direction. Similarly, the door base rear portion 14R is configured to be deployable to the vehicle rear side around a hinge portion 26 having a U-shaped longitudinal cross-section when cut along the vehicle longitudinal direction. The hinge portions 24 and 26 are formed with the vehicle width direction as a longitudinal direction.

  The base material side tier portion 22 includes a boundary portion between the door base material front portion 14F and the door base material rear portion 14R, a boundary portion between both side edges of the door base material front portion 14F in the vehicle width direction and the flange portion 30, and a door. It is formed at both side edges in the vehicle width direction of the base material rear portion 14R and the boundary portion of the flange portion 30, respectively, and is formed in an H shape in plan view as a whole. The base-side tier portion 22 is formed in a perforated shape by, for example, end milling. However, a slit is set instead of the base material side tier portion 22, and the door base material front portion 14F and the door base material rear portion 14R are separated from the flange portion 30 in advance at portions other than the hinge portions 24 and 26. Also good.

  Here, the configuration of the airbag door retainer 28 will be briefly described. As shown in FIGS. 1 and 2, the airbag door retainer 28 includes a body portion 32 as a frame-like portion formed in a rectangular cylindrical shape in plan view. The flange portion 30 is integrally formed on the upper end portion of the main body portion 32 so as to protrude outside the main body portion 32 along the back surface of the insert member 18 (see also FIG. 4). A plurality of through holes (circular holes) 30 </ b> A through which the rivets 34 (see FIGS. 1, 4, and 5) are passed are formed in the flange portion 30 at a predetermined interval. A plurality of reinforcing ribs 36 are provided between the outer surface of the main body portion 32 and the flange portion 30. Further, as shown in FIGS. 2 and 4, the front wall portion 32F and the rear wall portion 32R of the main body portion 32 have a plurality of locking holes 32A for locking a hook 38 of an airbag module 40 described later. Are aligned along the vehicle width direction.

  On the other hand, as shown in FIG. 4, an airbag module 40 containing functional components is disposed on the vehicle lower side of the airbag door retainer 28. The airbag module 40 includes a module case 42 formed in a substantially box shape, and a cylindrical inflator 44 and a folded airbag 46 for a passenger seat are accommodated in the module case 42. . The inflator 44 contains an igniting agent, a heat transfer agent, a gas generating agent, a filter, a coolant, and the like. The igniting agent is ignited by energizing a squib provided at an axial end. It is like that. Instead of the cylindrical inflator 44, a disk-shaped disk type inflator may be used. A plurality of substantially J-shaped hooks 38 are provided on the front wall portion and the rear wall portion of the module case 42. These hooks 38 are respectively locked in the locking holes 32 </ b> A on the airbag door retainer 28 described above, whereby the airbag module 40 is floatingly attached to the airbag door retainer 28. The airbag module 40 is not only attached to the airbag door retainer 28 but also supported by an instrument panel reinforcement (not shown) that is a vehicle body side component member via a bracket.

  Returning to FIGS. 1 and 2, a plurality of elongated holes 52 and 54 through which the rivet 50 is inserted are formed in the door base material front portion 14 </ b> F and the door base material rear portion 14 </ b> R of the door base material 14 described above. Each of the long holes 52 and 54 is formed with the longitudinal direction of the vehicle as the longitudinal direction, and is arranged at a predetermined interval in the vehicle width direction. As shown in FIGS. 1 and 4, the rivet 50 is disposed at the vehicle rear side end portion of the long hole 54 in the door base rear portion 14R, and the long hole 52 in the door base front portion 14F. It is arrange | positioned at the vehicle front side edge part. Thereby, when the door base material 14 and the insert member 18 in the airbag door 12 are deployed by the inflation pressure of the passenger seat airbag 46, the insert member 18 moves relative to the door base material 14 in the vehicle longitudinal direction. It can be done.

  As shown in FIGS. 4 and 5, between the back surface of the flange portion 30 and the rivet 34, for example, a bracket 48 formed of an iron plate in a U-shaped cross section is disposed. A flat plate retainer 59 made of, for example, an iron plate is disposed between the back surface of the door base material 14 and the rivet 50. The retainers 59 extend in the vehicle width direction on the back surfaces of the door base material front portion 14F and the door base material rear portion 14R, and bundle the corresponding rivets 50 together. Thereby, at the time of expansion | deployment of the door base material 14, each rivet 50 can move smoothly in the long holes 52 and 54 of the door base material 14, respectively. Instead of the bracket 48 and the retainer 59, a washer may be used for each rivet.

  As shown in FIG. 1 and FIG. 4, the door skin 16 is disposed on the surface side of the door base material 14 at a predetermined distance. As the door skin 16 (and the instrument panel skin 72), for example, genuine leather is used. A skin side tier portion 80 is formed in the door skin 16 along the insert side tier portion 58. The skin-side tier 80 has a tensile load (bag expansion pressure) that is equal to or greater than a predetermined value between the terminal portions of the door skin 16 positioned just above the door base material front portion 14F and the door base material rear portion 14R that are deployed in the vehicle longitudinal direction. ) Is formed as a sewing portion 56 formed by sewing with a suture thread 55 (see FIG. 5) that is broken by the action. A cushion material 20 is disposed on the back surface side of the door skin 16, that is, between the door skin 16 and the insert member 18. The cushion material 20, the door skin 16, and the insert member 18 are bonded to each other, for example. The cushion material 20 is, for example, a Russell material (knit structure).

  The insert member 18 is disposed between the door skin 16 and the door base material 14 and joined (fixed) to the door base material 14 using a rivet 50 which is a kind of fastening member. The insert member 18 has an insert side tier portion 58 corresponding to the base material side tier portion 22 (that is, along the outer shape of the door base material front portion 14F, the door base material rear portion 14R, and the hinge portions 24 and 26). Is formed. That is, as shown in FIG. 3, the insert side tier portion 58 includes a pair of left and right tier side portions 58A and 58B arranged in parallel in the vehicle front-rear direction, and the front end portions of these tier side portions 58A and 58B. A tier front portion 58D connected in the vehicle width direction via the corner portion 58C, a tier rear portion 58F connecting the rear end portions of the tier side portions 58A and 58B in the vehicle width direction via the corner portion 58E, and a tier side portion 58A, The intermediate portion 58B includes a tier intermediate portion 58H as a lateral tier portion that connects the intermediate portions of the 58B to each other in the vehicle width direction via the bifurcated portion 58G. The insert member 18 having the above configuration is made of a hard resin such as PC / AES. As shown in FIGS. 1 and 3, the insert-side tier portion 58 is formed in a perforated shape in which linear slits 60 and connecting portions 62 are alternately repeated by, for example, end milling. The insert-side tier portion 58 is set to a breaking strength that is torn by receiving the inflation pressure of the passenger seat airbag 46.

<Configuration of the main part of an instrument panel having an airbag door integrally>
As shown in FIGS. 3 and 8A, the tier intermediate portion 58H in the insert side tier portion 58 corresponds to the boundary portion between the pair of front and rear door base material front portions 14F and the door base material rear portion 14R. A perforation is formed along the width direction. 8A, the longitudinal end portion 60A of one adjacent slit 60 and the longitudinal end portion 60B of the other slit 60 are connected in the vehicle longitudinal direction via a connecting portion 62. One slit 60 and the other slit 60 are arranged so as to be opposed to each other so as to face each other. This arrangement corresponds to the bag protection means in the present invention. The connecting portion 62 connects the end 60A in the longitudinal direction of one slit 60 and the end 60B in the longitudinal direction of the other slit 60 in the vehicle front-rear direction.

  Expressing the above arrangement in another way, it can be said that the one slit 60 and the other slit 60 are arranged alternately so that the end portions 60A and 60B in the longitudinal direction wrap in the vehicle width direction. In other words, in the tier intermediate portion 58H, the slits 60 are arranged in a staggered manner, and the longitudinal end portion 60A of one adjacent slit 60 and the longitudinal end portion 60B of the other slit 60 are arranged in the longitudinal direction of the vehicle. It can be said that they are arranged so as to face each other.

  Further, as shown in FIGS. 3 and 9A, the above-described arrangement configuration is similarly adopted in the corner portions 58C and 58E in the tier portion 58. Specifically, the front end portion 64A of the slit 64 constituting the pair of left and right corner portions 58C arranged at the corner on the vehicle front side is the longitudinal end of the slit 60 constituting the tier front portion 58D adjacent thereto. The parts 60A and the vehicle 60 are arranged so as to be shifted from each other so as to face the vehicle longitudinal direction. Similarly, the rear end portion 66A of the slit 66 constituting the pair of left and right corner portions 58E arranged at the corner on the vehicle rear side is the end portion 60A in the longitudinal direction of the slit 60 constituting the tier rear portion 58F adjacent thereto. Are disposed so as to be opposed to each other so as to face the vehicle longitudinal direction.

(Action and effect)
In a normal time other than a frontal collision or a frontal collision prediction, the passenger seat airbag device 10 is in an inoperative state. For this reason, as shown in FIGS. 4 and 5, the airbag door 12 is also maintained in a non-deployed state.

  When a frontal collision or a frontal collision is predicted from this state, the state is detected by a collision detection sensor or a pre-crash sensor (not shown), and a detection signal is output to an airbag ECU (not shown). When the airbag ECU determines that a frontal collision has occurred or a frontal collision is inevitable based on the detection signal, an operating current is passed through the squib of the inflator 44. Thereby, the igniting agent of the inflator 44 is ignited and a large amount of gas is generated. By supplying the gas into the passenger seat airbag 46 in a folded state, the passenger seat airbag 46 starts to expand and deploy. The inflation pressure of the passenger seat airbag 46 acts on the back surface of the door base material 14, but when the inflation pressure exceeds a predetermined value, the door base material 14 is cleaved along the base material side tear portion 22. The

  At this time, since the bag inflation pressure also acts on the insert member 18 via the door base material 14, the insert member 18 is also cleaved along the insert side tier portion 58. Furthermore, as the insert member 18 is cleaved, the door skin 16 is cleaved along the sewing portion 56, so that the door base material 14, a part of the insert member 18, and the door skin 16 are shown in FIGS. 6 and 7. Becomes the airbag door 12, and is deployed to both the vehicle front side and the vehicle rear side around the hinge portions 24 and 26 of the door base material 14.

  Specifically, in the door base material 14, the door base material front portion 14 </ b> F develops toward the vehicle front side around the hinge portion 24, and the door base material rear portion 14 </ b> R develops around the hinge portion 26 toward the vehicle rear side. . Even if the insert-side tier portion 58 is broken and a part of the insert member 18 is cut off from the general portion of the insert member 18, the insert member 18 is partly bonded to the cushion material 20. The airbag door 12 can be stably deployed together with the door 20 and the door skin 16.

  When the airbag door 12 is deployed in the vehicle front-rear direction, the insert member 18 is cleaved along the insert-side tier portion 58, so that an opening 78 is formed. Then, the passenger seat airbag 46 is inflated into the passenger compartment through the opening 78, thereby restraining the upper body of the passenger seated in the passenger seat.

  Here, FIGS. 10A and 10B show the proportionality. As shown in FIG. 10 (A), when the insert member 88 is cleaved from the tier intermediate portion 89H along the perforated insert side tier portion 89, the joints connecting the adjacent slits 84 are connected. The portion 86 is broken in the vehicle width direction. Accordingly, as shown in FIG. 10B, burrs of edges 90 are formed at the portions where the connecting portions 86 are formed.

  However, in the present embodiment, when the passenger's seat airbag 46 is inflated and deployed, there is provided bag protection means for connecting the connecting portion 62 that connects the adjacent slits 60 in the tier intermediate portion 58H away from the passenger seat airbag 46. . Specifically, as shown in FIG. 8 (A), the longitudinal end 60A of one slit 60 adjacent to the tier intermediate portion 58H and the longitudinal end 60B of the other slit 60 are connected to each other. Adjacent slits 60 are arranged so as to face each other in the vehicle longitudinal direction via 62. For this reason, when the passenger seat airbag 46 is inflated and deployed, the connecting portion 62 is broken along the vehicle front-rear direction, so that the cleavage progresses from one slit 60 to the other slit 60. For this reason, an edge due to burrs is not formed at the distal end portion 18A of the fractured insert member 18, and an edge 82 is formed at a side portion (connecting portion 62) on the vehicle rear side of the distal end portion 18A. As a result, the passenger seat airbag 46 is moved away from the edge 82 due to the breakage of the connecting portion 62. Therefore, the passenger seat airbag 46 is suppressed or prevented from being in strong contact with the edge 82. As a result, according to the present embodiment, it is possible to suppress or prevent the passenger-side airbag 46 from being damaged from the edge 82 of the insert member 18 that is broken when the airbag door 12 is deployed.

  Further, in the present embodiment, as described above, the slit 60 is alternately slit in the vehicle width direction so that the longitudinal end portion 60A of one slit 60 and the longitudinal end portion 60B of the other slit 60 face each other in the vehicle longitudinal direction. Since 60 is arranged, the connecting portion 62 can be broken in the vehicle front-rear direction. That is, as described above, as shown in FIG. 10A, when the slits 84 are arranged in a straight line in the vehicle width direction, as shown in FIG. The edge 90 by the burr | flash is formed in the front-end | tip part 88A of the insert member 88 fractured | ruptured in the width direction. On the other hand, in the case of the present embodiment shown in FIGS. 8A and 8B, the connecting portion 62 is broken in the vehicle front-rear direction, so that the edge 82 is formed on the distal end portion 18A of the insert member 18. Is not formed. In other words, the passenger seat airbag 46 is moved away from the edge 82 by changing the direction in which the edge 82 is formed from the vehicle width direction to the vehicle front-rear direction. Therefore, strong contact between the passenger seat airbag 46 and the edge 82 is suppressed or prevented. As described above, according to the present embodiment, the above-described effect can be obtained only by changing the arrangement of the slits 60, so that the number of parts and the cost are not increased.

[Second Embodiment]
Hereinafter, 2nd Embodiment of the instrument panel which integrally has the airbag door which concerns on this invention is described using FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 11A, in the second embodiment, one slit 100 arranged on the vehicle front side and the other slit 60 arranged on the vehicle rear side are alternately arranged in the vehicle width direction. This is characterized in that the tier intermediate portion 58H is configured. More specifically, the slit 60 disposed on the rear side of the vehicle is exactly the same as that of the first embodiment described above, but the slit 100 disposed on the front side of the vehicle has its longitudinal end 100A as the other slit. It is bent in an L shape toward the end 60B side in the longitudinal direction of 60.
(Action and effect)
According to the above configuration, since the longitudinal end portion 100A of one slit 100 is bent in an L shape, the distal end portion of the longitudinal end portion 100A and the longitudinal end portion 60B of the other slit 60 are provided. An edge is formed at the position of the connecting portion 86 arranged between the two. That is, the edge 82 is formed at a position deeper from the distal end portion 18A of the insert member 18 (see FIG. 11B). Accordingly, the passenger seat airbag 46 is more difficult to contact with the edge 82. Therefore, according to this embodiment, it is possible to more effectively suppress or prevent the passenger seat airbag 46 from being damaged from the edge 82 of the insert member 18 that is broken when the airbag door 12 is deployed. .

[Third Embodiment]
Hereinafter, a third embodiment of an instrument panel integrally having an airbag door according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 12A, a skin side tier portion 80 is formed along the insert side tier portion 58 in the door skin 16 arranged in the uppermost layer of the airbag door 12. In the drawing, the skin side tier intermediate portion 80A as the skin side lateral direction tier portion corresponding to the tier intermediate portion 58H of the skin side tier portion 80 is shown. The sewing portion 56 constituting the skin side tier intermediate portion 80A is arranged toward the insert member 18 side. In addition, the arrangement | sequence of the slit 60 employ | adopts the linear type of the conventional type shown by FIG. However, the first and second embodiments may be adopted.

  Here, in the present embodiment, the tier intermediate portion 58H of the insert member 18 is disposed so as to be shifted to the vehicle rear side with respect to the skin side tier intermediate portion 80A. This configuration corresponds to “bag protection means” in the present invention.

(Action and effect)
According to the above configuration, since the tier intermediate portion 58H is arranged so as to be shifted to the vehicle rear side with respect to the skin side tier intermediate portion 80A, the airbag door 12 arranged on the vehicle rear side is deployed to the vehicle rear side. At this time, the edge 90 (see FIG. 10B) formed at the distal end portion 18A of the insert member 18 in the airbag door 12 is covered (covered) by the distal end portion 16A of the door skin 16. That is, when the insert member 18 is deployed to the vehicle rear side, the tip end portion 18A tends to be buried relatively to the cushion material 20 and the door skin 16 side, so the edge 90 formed on the tip portion 18A The tip 16A is covered so as to be caught. Accordingly, the passenger seat airbag 46 is suppressed or prevented from coming into strong contact with the edge 90.

  Further, as shown in FIG. 6, when the airbag door 12 is deployed, it is conceivable that the passenger seat airbag 46 wraps around the door skin 16 side. In this case, in this embodiment, as shown in FIG. 12A, the front end portion 16 </ b> A of the door skin 16 is interposed between the edge 90 of the insert member 18 and the passenger seat airbag 46. Therefore, the passenger seat airbag 46 does not have to contact the edge 90 directly.

  As a result, according to the present embodiment, as shown in FIG. 10 (A), the airbag door 12 even when the tier intermediate portion 58H of the insert side tier portion 58 is formed in a straight line in the vehicle width direction. It is possible to suppress or prevent the passenger seat airbag 46 from being damaged from the edge 90 of the insert member 18 that is broken when the airbag is deployed. In particular, the passenger seat airbag 46 is on the design surface side of the airbag door 12. The passenger seat air bag 46 can be directly protected from the edge 90 when the air bag wraps around.

[Fourth Embodiment]
Hereinafter, 4th Embodiment of the instrument panel which integrally has the airbag door which concerns on this invention is described using FIG. 12 (B). In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 12B, in the fourth embodiment, the front end portion 14R1 of the door base rear portion 14R disposed on the vehicle rear side is a vehicle with respect to the tier intermediate portion 58H of the insert side tier portion 58. It is characterized in that it is shifted to the front side. This configuration corresponds to “bag protection means” in the present invention. The slit 60 is of a conventional type shown in FIG. However, the first embodiment and the second embodiment may be applied.

(Action and effect)
According to the above configuration, the front end portion 14R1 of the door base material rear portion 14R disposed on the vehicle rear side is disposed so as to be shifted toward the vehicle front side with respect to the tier intermediate portion 58H. When deploying toward the vehicle rear side, the front end portion 14R1 of the door base rear portion 14R is positioned on the vehicle front side with respect to the edge 90 formed on the tip end portion 18A of the insert member 18. For this reason, although the passenger seat airbag 46 is in strong contact with the front end portion 14R1 of the door base rear portion 14R, it is not in strong contact with the edge 90 formed at the distal end portion 18A of the insert member 18. That is, the passenger seat airbag 46 is prevented from coming into contact with the edge 90.

  When the passenger seat airbag 46 is inflated and deployed, the passenger seat airbag 46 first comes into contact with the front end portion 14R1 of the door base rear portion 14R of the airbag door 12. In this case, in the present embodiment, the front end portion 14R1 of the door base rear portion 14R disposed on the vehicle rear side is shifted from the tier intermediate portion 58H toward the vehicle front side, and therefore the door base rear portion 14R. Becomes a wall, and the passenger's seat airbag 46 is difficult to contact the edge 90 of the insert member 18. As a result, according to the present embodiment, even when the tier intermediate portion 58H is formed in a straight line shape in the vehicle width direction, the passenger seat from the edge 90 of the insert member 18 that is broken when the airbag door 12 is deployed. It is possible to suppress or prevent the airbag 46 from being damaged, and in particular, the passenger airbag 46 can be directly protected from the edge 90 when the passenger airbag 46 is inflated and deployed.

[Fifth Embodiment]
Hereinafter, 5th Embodiment of the instrument panel which integrally has the airbag door which concerns on this invention is described using FIG.12 (C). In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 12 (C), in the fifth embodiment, the surface of the insert member 18 that is deployed in the vehicle front-rear direction when the airbag door 12 is deployed is formed on the side of the door base 14 at the position where the slit 60 is formed. A recess 104 is formed so as to be a convex curved surface 104A. This configuration corresponds to “bag protection means” in the present invention. The slit 60 is of a conventional type shown in FIG. However, the first embodiment and the second embodiment may be applied.

(Action and effect)
According to the above configuration, when the slit 60 is cleaved along the tear intermediate portion 58 </ b> H of the insert member 18, an edge 90 due to breakage is formed at the joint portion 62 between the slits 60. Here, in the present embodiment, since the concave portion 104 is formed so that the surface on the door base material 14 side is the convex curved surface 104A at the formation position of the slit 60 in the insert member 18, the tear intermediate portion 58H of the teared portion is formed. A portion where the convex curved surface 104A is formed is positioned at a position close to the edge 90 formed in the connecting portion 62. Therefore, when the passenger seat airbag 46 is inflated and deployed, the passenger seat airbag 46 is deployed while hitting the formation portion of the convex curved surface 104A. Therefore, the passenger seat airbag 46 is prevented from coming into contact with the edge 90, and thereby, the passenger seat airbag 46 is suppressed or prevented from coming into strong contact with the edge 90.

  Further, the front end portion 14R1 of the door base material 14R disposed on the vehicle rear side may be present behind the vehicle rear side with respect to the formation position of the tier intermediate portion 58H of the insert member 18. In this case, when the passenger seat airbag 46 is inflated and deployed, the passenger seat airbag 46 first contacts the door base material front portion 14F and the door base material rear portion 14R of the airbag door 12, and then the insert member 18 is inserted. There is a possibility of contact with the tip 18A. Even in such a case, in this embodiment, since the concave portion 104 is formed so that the surface on the door base material 14 side is the convex curved surface 104A at the position where the slit 60 is formed in the insert member 18, the convex curved surface 104A. The formation portion serves as the front end portion 14R1 of the door base rear portion 14R, the formation portion of the convex curved surface 104A serves as a wall, and the passenger seat airbag 46 is unlikely to contact the edge 90 of the insert member 18. As a result, according to the present embodiment, as in the fourth embodiment, even when the tier intermediate portion 58H is formed in a straight line in the vehicle width direction, the insert is broken when the airbag door 12 is deployed. It is possible to suppress or prevent the passenger airbag 46 from being damaged from the edge 90 of the member 18, and in particular, when the passenger airbag 46 is inflated and deployed, the passenger airbag 46 is directly connected to the edge 90. Can be protected.

  In the above embodiment, the long holes 52 and 54 are formed in the door base front part 14F and the door base rear part 14R. However, these long holes 52 and 54 are not always necessary, and the insert member 18 is provided on the door base. It may not be possible to move relative to the material 14 in the vehicle longitudinal direction.

12 Airbag door 14 Door base material 14F Door base material front part (door part)
14R Door base rear part (door part)
16 Door skin 18 Insert member 24 Hinge part 26 Hinge part 46 Air bag for passenger seat 55 Suture thread 56 Suture part 58 Insert side tier part (tier part)
58H Tier middle part (lateral tier part)
60 Slit 60A Longitudinal End 60B Longitudinal End 62 Connecting Portion 70 Instrument Panel 80A Skin Side Tier Middle Part (Skin Side Lateral Tier)
82 Edge 100 Slit 100A End in longitudinal direction 104 Concave 104A Convex curved surface

Claims (6)

A door base material having a pair of front and rear door portions that are made of a soft resin and that are deployed in the vehicle front-rear direction via a pair of front and rear hinge portions
A door skin that is spaced apart from the door substrate and forms a design surface;
Made of hard resin, arranged between the door base material and the skin and joined to the door base material, and perforated along the vehicle width direction corresponding to the boundary part of the pair of front and rear door parts An insert member having a tear portion formed along the outer shape of the door portion, including a lateral tear portion formed in
When the airbag for a passenger seat is inflated and deployed, an edge formed by breaking a connecting portion connecting adjacent slits in the lateral tier portion is kept away from the airbag for the passenger seat or the passenger seat on the edge. A bag protection means for preventing the air bag from contacting,
An instrument panel having an airbag door integrally provided with The bag protection means includes a slit adjacent to each other so that a longitudinal end of one slit adjacent to the lateral tear portion and a longitudinal end of the other slit face each other in the vehicle front-rear direction via a connecting portion. Are arranged by shifting them from each other,
An instrument panel integrally having the airbag door according to claim 1. The end in the longitudinal direction of the one slit is bent in an L shape toward the end in the longitudinal direction of the other slit,
An instrument panel integrally having the airbag door according to claim 2. The door skin is a genuine leather skin, and a skin side lateral tier is formed along the lateral tier.
Furthermore, by sewing the ends of the genuine leather skin with sutures that can be broken when a bag inflation pressure of a predetermined value or more acts, and arranging the sewing part toward the insert member side, the skin side tier part Is configured,
The bag protection means is configured by disposing the lateral tier portion in a vehicle rear side with respect to the skin side lateral tier portion,
An instrument panel integrally having the airbag door according to claim 1. The bag protection means is configured by shifting the front end portion of the door portion arranged on the vehicle rear side to the vehicle front side with respect to the lateral tier portion,
An instrument panel integrally having the airbag door according to claim 1. The bag protection means is formed by forming a recess so that the surface is a convex curved surface on the door base material side at the formation position of the slit in the insert member.
An instrument panel integrally having the airbag door according to claim 1.

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