JP2009056846A - Vehicular knee airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently transmit a development reaction force when a knee airbag is developed and thrust which acts when a knee airbag receives an occupant's knee to an instrument panel and the like. <P>SOLUTION: A partition member 52 of a T shape by a front view is provided detachably in a glove box body 16. Stoppers 64 of rectangular solid block shapes are arranged at prescribed positions of a right and left pair of side walls 16D of the glove box body 16 (positions that face rear ends of the upper surface 56A of the vertically partitioning part 56 of the partition member 52). Even if the deployment force of the knee airbag 46 and the thrust which acts when an occupant's knee is constrained by the knee airbag 46 act in the direction of an arrow F, and thereby if the partition member 52 is pushed up, displacement in the same direction can be regulated by the stoppers 64. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle knee airbag device that restrains an occupant's knees by inflating and deploying a knee airbag at the time of a collision.

In recent years, from the viewpoint of improving occupant protection performance at the time of a collision, a knee airbag device for a vehicle that restrains the occupant's knee by inflating and deploying a knee airbag at the time of a collision is being installed. Patent Documents 1 and 2 below disclose an example of this type of vehicle knee airbag device. Briefly described, in the prior art disclosed in these patent documents, a knee airbag device is built in a grab door of a grab box provided in an instrument panel.
DE 4209604 US Pat. No. 6,276,713

  Here, when the knee airbag device is built in the grab door as in the technique disclosed in the above prior art, the grab box itself is originally used as an accessory case, so the inside of the grab box body is a space. . For this reason, it is difficult to transmit the reaction force when the knee airbag is deployed and the pressing force applied when the knee airbag receives the occupant's knee to the grab box or the instrument panel reinforcement.

  In some cases, a member such as a shelf may be installed as a partition in the grab box body, but in general, the member such as the shelf is held from the grab door to the front side of the vehicle so as not to sacrifice the function of the glove box as an accessory case. In position. Therefore, a relatively large gap is formed between the rear end of a member such as a shelf and the surface of the grab door on the front side of the vehicle, making it difficult for the knee airbag to receive a pressing force applied when the knee airbag receives the occupant's knee. . Therefore, considering the rigidity (load transmission performance) of the grab box body, it can be said that it is desirable to bring the members such as the shelves as close to the front surface of the grab door as possible. However, in that case, when the pressing force applied when the knee airbag receives the occupant's knees acts on the grab box body side through the grab door, the members such as the shelves are in front of the vehicle in the load acting direction. It is displaced (tilted) obliquely upward and escapes, and sufficient load transmission performance cannot be obtained.

  In consideration of the above facts, the present invention can sufficiently transmit the deployment reaction force when the knee airbag is deployed and the pressing force acting when the knee airbag receives the occupant's knee to a support member such as an instrument panel. It is an object to obtain a vehicle knee airbag device.

  According to a first aspect of the present invention, there is provided an airbag module configured to include a knee airbag that is folded during a non-collision and inflated and deployed to the occupant's knee during a collision, and provided at a predetermined position of the instrument panel. A knee airbag device for a vehicle including a grab door that opens and closes a grab box body and accommodates the airbag module therein, and is configured separately from the grab box body in the grab box body At the same time, the grab box body is mounted so as to be relatively displaceable in the height direction, and all or a part of the storage space in the grab box body is vertically divided, and the end on the door side is close to the back surface of the grab door. The partition member arranged in such a manner is provided, and a pushing force is applied to the partition member via the grab door. The provided limiting means for limiting the displacement of the load acting direction of the partition member in the glove box body, characterized in that the.

  According to a second aspect of the present invention, in the vehicle knee airbag device according to the first aspect, the restricting means is provided on the grab box body side, and the partition member is displaced when the partition member is displaced in the load acting direction. It is a restricting member that interferes with the upper surface of the partition member and restricts further displacement of the partition member in the load acting direction.

  According to a third aspect of the present invention, in the vehicle knee airbag device according to the first aspect, the regulating means includes a contact portion provided on an upper surface side of the partition member and a contact portion on the grab box main body side. A contacted portion that is provided on the displacement direction side and that abuts against the contact portion when the partition member is displaced in the load acting direction and restricts the displacement of the contact portion in the further load acting direction. It is characterized by comprising.

  According to a fourth aspect of the present invention, in the vehicle knee airbag device according to the third aspect, the abutted portion and the abutting surface of the abutting portion are disposed substantially perpendicular to the load acting direction. It is characterized by that.

  According to a fifth aspect of the present invention, in the vehicle knee airbag device according to the fourth aspect, the abutting portions are provided at both ends in the width direction of the partition member, and the abutted portions are formed by a grab box main body. Provided inside both side parts, and further provided between the partition member and the top wall of the grab box body is an auxiliary restricting part that restricts displacement of the intermediate part in the width direction of the partition member in the load acting direction. It is characterized by that.

  According to the first aspect of the present invention, the grab box body is provided at a predetermined position of the instrument panel, and the grab box body can be opened and closed by the grab door.

  When the knee airbag is inflated and deployed, the deployment reaction force at that time acts on the end of the partition member on the door side via the grab door. Further, the pressing force when the knee of the occupant is received by the inflated knee airbag acts on the door side end of the partition member via the knee airbag and the grab door. Since these unfolding reaction force and pressing force act in the direction of pushing up the partition member, the partition member tends to be displaced in the load acting direction.

  Here, in the present invention, since the restricting means for restricting the displacement of the partition member in the load acting direction when a pushing force is applied to the partition member through the grab door is provided, the load acting direction of the partition member by the restricting means is provided. Displacement to is restricted. For this reason, the partition member does not escape by being displaced in the load acting direction.

  Further, the partition member is provided, and the partition member is arranged so that the door side end of the partition member is close to the back surface of the grab door, so that the partition member is not provided or the partition member is provided. Higher rigidity can be ensured than the grab box body in which the end of the door side is separated from the back surface of the grab door and a large gap is formed between them.

  When the force which pushes up a partition member acts from two said points, this is received by a partition member and a load is transmitted to support members, such as an instrument panel, quickly and efficiently.

  According to the second aspect of the present invention, when the occupant's knee is received by the knee airbag, the partition member is displaced in the load acting direction by a load input to the partition member via the knee airbag and the grab door. If it is going to do, the regulating member provided in the grab box main body side interferes with the upper surface of a partition member, and the displacement to the further load action direction of a partition member is controlled.

  According to the third aspect of the present invention, the abutting portion is provided on the upper surface side of the partition member, and the abutted portion is provided on the displacement direction side of the abutting portion on the grab box body side. For this reason, when the occupant's knees are received by the knee airbag or the like, the load applied to the partition member via the knee airbag and the grab door causes the contact portion to be covered when the partition member attempts to displace in the load acting direction. Abutting on the abutting portion, further displacement of the abutting portion in the load acting direction is restricted.

  As described above, in the present invention, the restricting means is divided into the partition member side and the grab box main body side so that the configuration is established.

  According to the fourth aspect of the present invention, since the abutted portion and the abutting surface of the abutting portion are arranged substantially perpendicular to the load acting direction, a substantially partial force is generated with respect to the input load. The total load acting on the partition member can be transmitted to the instrument panel or the like without any problem.

  According to this invention of Claim 5, a contact part is provided in the width direction both ends of a partition member, and a to-be-contacted part is provided in the both sides inner side of a grab box main body, Furthermore, the partition member and the top wall of a grab box main body Since there is an auxiliary restricting part that restricts the displacement of the intermediate part in the width direction of the partition member in the load acting direction, the load is also applied to the intermediate part in the width direction of the partition member in addition to the action of the original restricting means. The displacement in the action direction can be restricted.

  As described above, the knee airbag device for a vehicle according to the first aspect of the present invention has the deployment reaction force when the knee airbag is deployed and the pressing force acting when the knee airbag receives the occupant's knee. It has the outstanding effect that it can fully transmit to support members, such as an instrument panel.

  The vehicle knee airbag device according to the second aspect of the present invention is relatively simple as long as it can interfere with the upper surface of the partition member during the load operation and restrict the displacement of the partition member in the further load application direction. It has the outstanding effect that a structure can be materialized.

  The knee airbag device for a vehicle according to the third aspect of the present invention has an excellent effect of being able to cope with a wide range according to the design and molding conditions of the grab box.

  The knee airbag device for a vehicle according to the fourth aspect of the present invention efficiently transmits a load to an instrument panel or the like when a pressing force or the like is input to the partition member via the knee airbag and the grab door at the time of a collision. It has an excellent effect of being able to.

  According to the fifth aspect of the present invention, the knee airbag device for a vehicle according to the present invention is more effective for the deployment reaction force when the knee airbag is deployed and the pressing force acting when the knee airbag receives the occupant's knee. It has the outstanding effect that it can fully transmit to support members, such as an instrument panel.

[First Embodiment]
Hereinafter, an embodiment of a vehicle knee airbag device 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.

  FIG. 1 is a longitudinal sectional view showing an overall configuration in an assembled state of a glove door built-in type knee airbag device according to the present embodiment. FIG. 2 shows a perspective view of the vicinity of the opening of the grab box body. Further, FIG. 3 shows an external front view of an instrument panel on which a glove door built-in type knee airbag device is mounted. FIG. 4 is a longitudinal sectional view showing a state in which the knee airbag device with the built-in grab door shown in FIG. 1 is activated and the knee airbag is deployed.

  As shown in FIG. 3, the position facing the passenger's knee on the passenger seat side of the instrument panel 10 (more precisely, the upper part of the instrument panel lower 12 constituting the lower part of the instrument panel 10), A grab box 14 is provided for storing small items 54 (see FIG. 1). As shown in FIG. 1, the grab box 14 includes a resin-made grab box body 16 formed in a box shape, and a grab door 20 that opens and closes an opening 18 of the grab box body 16.

  The grab box main body 16 is disposed so that the opening 18 faces the vehicle rear side (vehicle interior side), a bottom wall portion (front wall portion) 16A disposed adjacent to the air conditioner unit 19, and an upper wall portion. 16B, the lower wall part 16C, and a pair of left and right side wall parts 16D. The front and rear length of the lower wall portion 16C is set to be shorter than the front and rear length of the upper wall portion 16B, whereby the opening 18 of the grab box body 16 has an instrument panel upper 22 (upper part of the instrument panel 10). 3) and a design surface (rounded curved surface) having continuity with the instrument panel lower 12 following this.

  As shown in FIGS. 1 and 2, the grab door 20 that closes the opening 18 of the above-described grab box body 16 includes a resin-made grab door outer 24 that is arranged on the vehicle interior side and forms a design surface. A resin grab door inner 26 that is disposed on the vehicle front side of the grab door outer 24 and integrated with the grab door outer 24 forms an outer shell.

  The grab door outer 24 is formed in a substantially rectangular tray shape. More specifically, the grab door outer 24 is composed of a generally rectangular flat plate-shaped grab door outer general part 24A constituting a design surface, and a grab door outer peripheral wall part raised from the four outer peripheral sides of the grab door outer general part 24A. 24B. Further, on the back side of the grab door outer general portion 24A (the front surface of the vehicle facing the grab door inner 26), a fracture portion (tier line) 28 set in an H shape when viewed from the grab box body 16 side. Is formed. The breaking portion 28 is configured as a thin portion, and when the bag deployment pressure acting on the breaking portion 28 reaches a predetermined value, the grab door outer general portion 24A breaks along the breaking portion 28 and the airbag door 30 (see FIG. 4) is developed so as to be opened both vertically and vertically. As in the case of the grab door 20, the rupture part may be configured by an invisible type in which the rupture part 28 is not visible from the outside (occupant side), or the grab door general part is thinned from both the front and back sides to make the exterior (occupant) The rupture portion may be constituted by a visible type in which the rupture portion is visible from the side.

  On the other hand, the grab door inner 26 is also formed in a tray shape having a size that can be fitted to the grab door outer 24. Accordingly, the grab door inner 26, like the grab door outer 24, has a generally rectangular flat plate-like grab door inner general part 26A arranged substantially parallel to the grab door outer general part 24A, and the grab door inner general part. And a grab door inner peripheral wall portion 26B raised from the outer peripheral four sides of 26A. Note that the bottom of the grab door inner 26 is formed deeper than the grab door outer 24. Further, the upper wall portion 26B ′ of the grab door inner peripheral wall portion 26B swells in a substantially semicircular shape toward the front side of the vehicle in a side view, and the indoor side of the upper wall portion 16B of the grab box main body 16 corresponding to this. A concave portion 32 that can receive the upper wall portion 26B ′ of the grab door inner peripheral wall portion 26B is formed at the end portion. The upper wall portion 26B ′ and the concave portion 32 of the grab door inner peripheral wall portion 26B are in the direction of the arrow F in FIG. And the occupant's knee is also the direction in which the knee airbag 46 is pressed.).

  Further, a plurality of vertical ribs and horizontal ribs (not shown) formed integrally with the grab door inner 26 are formed inside the above-described grab door inner 26. Both the vertical ribs and the horizontal ribs are made of resin, and the leading ends of these vertical ribs and horizontal ribs (except for the vertical ribs and horizontal ribs that support the bottom wall portion 44A of the airbag case 44 described later). Is thermally welded to the surface of the grab door outer 24 on the vehicle front side, so that the grab door outer 24 and the grab door inner 26 are integrated. The grab door outer 24 and the grab door inner 26 are also thermally welded to the grab door outer peripheral wall portion 24B and the grab door inner peripheral wall portion 26B.

  The above-described grab door 20 accommodates an airbag module 42 of a knee airbag device 40 with a built-in grab door. Note that the glove door built-in type knee airbag device 40 includes the airbag door 30 and the airbag module 42 described above.

  The airbag module 42 is disposed on the upper end side of the airbag case 44, a resin airbag case 44 formed in a box shape, a knee airbag 46 stored in a folded state in the airbag case 44, and the airbag case 44. The cylindrical inflator 48 is configured as a main part. The knee airbag 46 may be folded by roll folding, may be folded by bellows folding, or may be folded in combination. Further, in the knee airbag device 40 with a built-in grab door, the inflator 48, which is an element grasped as gas generating means in a broad sense, is arranged on the upper end side in the airbag case 44, but not limited thereto, The inflator may be arranged at the lower end side in the airbag case 44 or at the middle in the vertical direction. Further, the inflator is installed outside the grab door so that the inflator and the knee airbag 46 are communicated with each other by a tube or the like. May be.

  The airbag case 44 includes a rectangular flat bottom wall portion 44A, an upper wall portion 44B and a lower wall portion 44C, and left and right side wall portions (not shown). Among these, the upper wall portion 44B, the lower wall portion 44C, and the front end portions of the left and right side wall portions are thermally welded to the surface of the grab door outer 24 on the vehicle front side.

  Here, a resin partition member 52 formed in a T shape in a front view is detachably disposed in the above-described grab box body 16. The partition member 52 is made of resin, and is disposed horizontally along the vehicle width direction, and an upper and lower partition part (shelf) 56 on which small items 54 such as an owner's manual are placed, and the vehicle width of the upper and lower partition part 56 And a lower partition portion 58 that hangs downward from an intermediate portion along the direction. In the state where the partition member 52 is disposed in the grab box body 16, the storage space 60 in the grab box body 16 is vertically divided by the upper and lower partition parts 56, and the lower partition part 58 in the grab box body 16. The storage space 60 is divided into right and left.

  As shown in FIG. 1, the partition member 52 extends to a position where the grab door side end portion 52 </ b> A is close to the grab door inner general portion 26 </ b> A of the grab door 20. That is, only a slight gap 62 is formed between the partition member 52 and the grab door inner general portion 26A, and no large gap is formed.

  Various structures can be adopted as a structure for attaching and detaching the partition member 52 in the grab box body 16. For example, an attachment flange may be extended from the lower end of the lower partition part 58 and may be removably attached to the lower wall part 16C of the grab box body 16 via the attachment flange by claw fitting or screwing. Then, a concave groove into which the lower end portion of the lower partition portion 58 can be inserted may be formed in advance in the lower wall portion 16C of the grab box body 16, and the lower end portion of the lower partition portion 58 may be inserted into the concave groove. . In addition, an optimal attachment / detachment structure may be employed in accordance with the shape of the partition member (in addition to the T shape, it may be an L shape, an H shape, or a U shape).

  The pair of left and right side wall portions 16D of the above-described grab box body 16 is provided with a restriction means and a stopper 64 as a restriction member. The stopper 64 is a rectangular parallelepiped block-shaped piece, and is attached so that the lower surface 64 </ b> A contacts the upper surface 56 </ b> A of the upper and lower partition portions 56 of the partition member 52. Note that the lower surface 64 </ b> A of the stopper 64 may be disposed close to the upper surface 56 </ b> A of the upper and lower partition portions 56 of the partition member 52.

  Supplementally, a release knob (not shown) is provided on the upper edge side of the grab door 20, and an engagement with a lock mechanism (not shown) provided on the opening 18 side of the grab box body 16 when the occupant operates with a finger. The combined state is released, and the urging force of an urging means such as a spring (not shown) is rotated (opened) around the lower end portion toward the indoor side.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  When a vehicle equipped with the above-configured glove door built-in knee airbag device 40 collides with the front, the state is detected by a collision detection means (not shown), and a detection signal is output to the airbag ECU. When the airbag ECU determines that the airbag is activated, various airbag devices on the driver's seat side are activated, and the knee airbag device 40 with a built-in grab door on the passenger seat side is also activated. That is, a predetermined current is applied to the squib of the inflator 48 of the airbag module 42 built in the grab door 20 to operate the inflator 48. Thereby, gas is generated from the inflator 48, and the gas is supplied into the knee airbag 46 stored in the grab door 20 in a folded state, and is inflated.

  Since the front end portion of the peripheral wall portion (the upper wall portion 44B and the lower wall portion 44C and the left and right side wall portions) of the airbag case 44 is thermally welded to the front surface of the vehicle of the grab door outer 24, the knee airbag 46 The expansion pressure acts on the grab door outer 24 without loss, and the grab door outer general portion 24A is quickly broken along the fracture portion 28. As a result, as shown in FIG. 4, the airbag door 30 is deployed up and down, and the knee airbag 46 is inflated and deployed between the instrument panel 10 and the knees of the occupant. Both knees are restrained and protected.

  Here, when the knee airbag 46 is inflated and deployed, the deployment reaction force at that time acts on the end of the partition member 52 on the door side via the grab door 20. In addition, the pressing force when the knee of the occupant is received by the inflated and deployed knee airbag 46 acts on the end portion 52 </ b> A on the grab door side of the partition member 52 through the knee airbag 46 and the grab door 20. Since the unfolding reaction force and the pressing force act in a direction in which the partition member 52 is pushed up (in the direction of arrow F in FIG. 1, obliquely upward in front of the vehicle), the partition member 52 tends to be displaced (tilt) in the load acting direction. .

  However, in this embodiment, since the stopper 64 which is a block-shaped piece is provided on the inner surface of both side wall portions 16D of the grab box main body 16, the partition member 52 has stoppers 64 at both ends in the width direction of the upper and lower partition portions 56. And the displacement in the load acting direction is restricted. For this reason, the partition member 52 does not escape by being displaced in the load acting direction.

  Further, in the present embodiment, the partition member 52 is provided, and the partition member 52 is arranged so that the end portion 52A on the grab door side of the partition member 52 is close to the back surface of the grab door 20, so that the partition member itself is not originally provided. Alternatively, even if the partition member is provided, the end of the partition member on the grab door side is separated from the back surface of the grab door, and higher rigidity can be ensured than the grab box body in which a large gap is formed between the two.

  From the above two points, when a force is applied to push up the partition member 52, the partition member 52 receives this force, and the load can be transmitted to the instrument panel 10 quickly and efficiently. As a result, according to the present embodiment, the deployment reaction force when the knee airbag is deployed and the pressing force acting when the knee airbag 46 receives the occupant's knee can be sufficiently transmitted to the instrument panel 10. .

  Further, in the present embodiment, the stopper 64 is provided only on the grab box main body 16 side without providing the restricting means on the partition member 52 side. In other words, the upper and lower partition parts 56 of the partition member 52 when the load is applied. Since it is only necessary to be able to restrict the displacement of the partition member 52 in the direction of further load action by interfering with the upper surface 56A, the configuration can be established relatively easily.

[Second Embodiment]
Next, a second embodiment of the vehicle knee airbag device according to the present invention will be described with reference to FIGS. 5 and 6. 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 FIGS. 5 and 6, the second embodiment is characterized in that the regulating means is distributed between the partition member 52 side and the grab box body 16 side. More specifically, block-shaped contact portions 70 formed in a trapezoidal shape in a side view are respectively provided at both ends in the width direction of the end portion 52A on the grab door side on the upper surface 56A of the upper and lower partition portions 56 of the partition member 52. It is integrally formed. On the other hand, block-shaped contact portions 72 formed in a trapezoidal shape that is upside down in a side view are integrally formed at positions facing the contact portions 70 of the pair of left and right side wall portions 16D of the grab box body 16. Has been.

  The inclined surface 70A formed on the vehicle front side of the contact portion 70 and the inclined surface 72A formed on the vehicle rear side of the contacted portion 72 are close to each other in the mounted state of the partition member 52 (see FIG. 6). In addition, the inclination angles of the inclined surfaces 70A and 72A are set so as to be substantially perpendicular to the load acting direction (the direction of arrow F in FIG. 5).

(Action / Effect)
According to the above configuration, when the knee airbag 46 is inflated and deployed, the deployment reaction force at that time acts on the grab door side end portion 52 </ b> A of the partition member 52 via the grab door 20. Further, the pressing force when the knee of the occupant is received by the inflated and deployed knee airbag 46 acts on the grab door side end portion 52 </ b> A of the partition member 52 via the knee airbag 46 and the grab door 20. Since these unfolding reaction force and pressing force act in a direction in which the partition member 52 is pushed up (in the direction of arrow F in FIG. 5, diagonally upward in front of the vehicle), the partition member 52 tends to be displaced (tilted) in the load acting direction. To do.

  Here, when the partition member 52 is pushed up in the direction of arrow F, the contact portion 70 integrated with the upper and lower partition portions 56 of the partition member 52 also tends to be displaced in the same direction. For this reason, the inclined surface 70A of the abutting portion 70 abuts on the inclined surface 72A of the abutted portion 72 fixedly arranged on the vehicle front side of the abutting portion 70, and the partition member 52 obliquely above the front of the vehicle. Stop lateral displacement. That is, the partition member 52 does not escape by being displaced in the load acting direction.

  Also in this embodiment, as in the first embodiment described above, the grab box body 16 includes a partition member 52, and the end 25 </ b> A on the grab door side of the partition member 52 is close to the back surface of the grab door 20. With this arrangement, even if the partition member itself is not originally provided or the partition member is provided, the end of the partition member on the grab door side is separated from the back surface of the grab door, and a large gap is formed between the two. Higher rigidity than the grab box body can be secured.

  From the above two points, when a force is applied to push up the partition member 52, the partition member 52 can receive the force, and the load can be transmitted to the instrument panel 10 quickly and efficiently. As a result, also in this embodiment, as in the first embodiment described above, the deployment reaction force when the knee airbag 46 is deployed and the pressing force acting when the knee airbag 46 receives the occupant's knee are measured. Can be sufficiently transmitted to the ment panel 10.

  Furthermore, in this 2nd Embodiment, since the regulation means was distributed to the partition member 52 side and the grab box main body 16 side, a variation can be given to the method of regulating the displacement of the partition member 52 in the load acting direction. . As a result, according to the present embodiment, it is possible to deal with a wide range according to the design and molding conditions of the grab box 14.

  In addition, since the inclined surface 70A of the contact portion 70 and the inclined surface 72A of the contacted portion 72 constituting the restricting means are disposed substantially at right angles to the load acting direction, a component force is applied to the input load. The entire load acting on the partition member 52 can be transmitted to a support member such as the instrument panel 10 without being generated. Therefore, a load can be efficiently transmitted to a support member such as the instrument panel 10.

[Third Embodiment]
Next, a third embodiment of the vehicle knee airbag device 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. 7, the third embodiment is characterized in that, in addition to the stopper 64 of the first embodiment described above, a pair of restricting plates 80 as auxiliary restricting portions are provided on the grab box main body 16 side. There is. More specifically, the restriction plate 80 is provided in parallel on the left and right sides on both sides of the lower partition 58 of the partition member 52 between the upper and lower partitions 56 of the partition member 52 and the upper wall 16B of the grab box body 16. It has been. Further, the regulating plate 80 is integrated on the upper wall portion 16B side of the grab box main body 16, and the lower end portion is arranged in contact with (or close to) the upper surface of the lower partition portion 58 of the partition member 52. ing.

(Action / Effect)
Also with the above configuration, since the stopper 64 of the first embodiment is provided, the operation and effect of the first embodiment can be obtained. In addition, in the present embodiment, the pair of left and right restricting plates 80 as the auxiliary restricting portions are provided between the upper and lower partition portions 56 of the partition member 52 and the upper wall portion 16B of the grab box main body 16. When a pushing force is applied to the vehicle diagonally upward, the displacement of the upper and lower partition portions 56 is not restricted by the pair of left and right stoppers 64, but the upper and lower portions of the partition member 52 are also moved by the lower ends of the pair of left and right restriction plates 80. The displacement of the partition part 56 can be regulated. Accordingly, the deployment reaction force when the knee airbag is deployed and the pressing force that is applied when the knee airbag 46 receives the occupant's knees are more effectively transmitted to the support member such as the instrument panel 10. Can do.

  In the configuration shown in FIG. 7, the auxiliary restricting portion is provided on the upper wall portion 16 </ b> B side of the grab box main body 16, but is not limited thereto, and may be erected on the upper and lower partition portion 56 side of the partition member 52. However, it may be provided in both.

[Supplementary explanation of the above embodiment]
(1) In the above-described embodiment, the knee airbag device 40 with a built-in grab door is described to operate at the time of a frontal collision. However, the present invention is not limited to this, and a collision prediction unit such as a pre-crash sensor is mounted on the vehicle. When a collision is predicted by the collision predicting means, a grab door built-in type knee airbag device may be operated. In other words, “at the time of collision” described in claim 1 includes not only actual collision time but also collision prediction time.

  (2) To supplement the term “built-in” in the case of the knee airbag device 40 with built-in grab door according to the present embodiment, all the main components of the knee airbag device are arranged inside the grab door 20. It is not necessary to be included, and at least the knee airbag is included in the “built-in” if it is disposed inside the grab door. Therefore, as described above, after connecting the inflator and the knee airbag with a communication means such as a hose, the inflator is provided on the grab box body 16 side, the instrument panel 10 side, the body such as instrument panel reinforcement, etc. Or may be provided in equipment such as an air conditioner unit.

It is a longitudinal cross-sectional view (1-1 sectional drawing of FIG. 3) which shows the whole structure in the assembly | attachment state of the knee airbag apparatus with a built-in grab door which concerns on 1st Embodiment. It is a perspective view near the opening part of the grab door main body shown by FIG. It is an external appearance front view of an instrument panel in which a knee airbag device with a built-in grab door is mounted. FIG. 2 is a longitudinal sectional view of a state in which the knee airbag device with the built-in grab door shown in FIG. 1 is activated and the knee airbag is deployed. It is a longitudinal cross-sectional view corresponding to FIG. 1 which shows the whole structure in the assembly | attachment state of the knee airbag apparatus with a built-in grab door which concerns on 2nd Embodiment. FIG. 6 is a perspective view of the vicinity of the opening of the grab door body shown in FIG. 5. It is a perspective view of the opening part vicinity of the grab door main body corresponding to FIG. 6 which shows the modification of the restriction | limiting means of the knee airbag apparatus with a built-in grab door which concerns on 3rd Embodiment.

Explanation of symbols

10 Instrument panel 14 Grab box 16 Grab box body 16B Upper wall (top wall of grab box body)
16D side wall (both sides of grab box body)
20 Grab door 40 Grab door built-in type knee airbag device (vehicle knee airbag device)
42 Airbag module 46 Knee airbag 52 Partition member 52A Grab door end 56A Upper surface (upper surface of partition member)
60 Storage space 64 Stopper (regulating means, regulating member)
70 Abutting part (regulating means)
70A inclined surface (contact surface)
72 Contacted part (regulating means)
72A Inclined surface (contact surface)
80 Restriction plate (auxiliary restriction part)

Claims (5)

An airbag module configured to include a knee airbag that is folded during non-collision and inflated and deployed to the occupant's knee during collision;
A grab door that opens and closes a grab box body provided at a predetermined position of the instrument panel and accommodates the airbag module therein;
A vehicle knee airbag device comprising:
The grab box main body is configured separately from the grab box main body and mounted so as to be relatively displaceable in the height direction of the grab box main body, and all or one of the storage spaces in the grab box main body. A partition member arranged so that the end of the door side is close to the back surface of the grab door, and the part is divided up and down,
When a pushing force is applied to the partition member via the grab door, a regulating means for regulating the displacement of the partition member in the load acting direction is provided in the grab box body.
A knee airbag device for a vehicle. The restricting means is provided on the grab box main body side, and when the partition member is displaced in the load acting direction, it interferes with the upper surface of the partition member and causes the partition member to be displaced further in the load acting direction. It is a regulating member to regulate,
The vehicle knee airbag device according to claim 1. The restricting means is provided on the displacement direction side of the abutment portion provided on the upper surface side of the partition member and the abutment portion on the grab box main body side, and is applied when the partition member is displaced in the load acting direction. A contacted part that abuts the contact part and regulates displacement of the contact part in the load acting direction beyond that,
The vehicle knee airbag device according to claim 1. The contacted part and the contact surface of the contact part are disposed substantially perpendicular to the load acting direction,
The knee airbag device for a vehicle according to claim 3. The abutting portions are provided at both ends in the width direction of the partition member, and the abutted portions are provided inside both side portions of the grab box body,
Furthermore, between the partition member and the top wall portion of the grab box main body, an auxiliary restricting portion that restricts displacement in the load acting direction of the intermediate portion in the width direction of the partition member is provided.
The vehicle knee airbag device according to claim 4.

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