WO2011065128A1 - Airbag device for front passenger seat - Google Patents
Airbag device for front passenger seat Download PDFInfo
- Publication number
- WO2011065128A1 WO2011065128A1 PCT/JP2010/067669 JP2010067669W WO2011065128A1 WO 2011065128 A1 WO2011065128 A1 WO 2011065128A1 JP 2010067669 W JP2010067669 W JP 2010067669W WO 2011065128 A1 WO2011065128 A1 WO 2011065128A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- retainer
- rear wall
- airbag device
- region
- slit
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/055—Padded or energy-absorbing fittings, e.g. seat belt anchors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/201—Packaging straps or envelopes for inflatable members
Definitions
- the present invention relates to an airbag device for a passenger seat provided in a vehicle such as an automobile.
- an airbag device for a passenger seat that inflates an airbag by operating an inflator and restrains a passenger on the passenger seat side has been used.
- an airbag device for a passenger seat includes an inflator that generates gas at the time of a vehicle collision, an airbag that is inflated and deployed by the gas of the inflator, and a retainer that accommodates the airbag in a folded state.
- the passenger seat airbag device is attached to an opening of an instrument panel in a state where a lid is attached to a retainer that houses an inflator and an airbag.
- ⁇ Locking plates are fixed to the front and rear walls of the retainer corresponding to the longitudinal direction of the vehicle.
- the locking plate is integrally provided with a plurality of hook-shaped hooks at appropriate intervals in the extending direction.
- the lid is provided with engagement holes that can engage the hooks at positions corresponding to the hooks of the locking plate. The lid is attached to the retainer by engaging the hooks of the locking plate with the engaging holes.
- the airbag device having such a configuration, when the inflator is actuated during a vehicle collision or the like, the airbag is inflated, the lid is opened, and the airbag is deployed in the vehicle compartment.
- the airbag device for a passenger seat needs to have an impact absorption function that gradually deforms the retainer when an occupant hits and absorbs an impact at the time of collision.
- Patent Document 1 As an airbag device for a passenger seat in which such a retainer has a shock absorbing function, for example, the one described in Patent Document 1 is known.
- a pair of left and right slits are formed in a plurality of steps in the vertical direction at corners on both the left and right sides of the rear wall of the retainer (casing body).
- the rear wall of the retainer deforms into the opening so as to crush each slit and absorbs the impact.
- the rigidity of the rear wall decreases in a region between the pair of left and right slits (hereinafter referred to as an “inter-slit region”). Therefore, when the impact is transmitted to the retainer, the rear wall is bent or buckled in the region between the slits, and is deformed as a result.
- the locking plate is generally thicker and stiffer than the wall portion constituting the retainer. For this reason, it becomes difficult for the rear wall to undergo deformation such as bending and buckling at the portion where the locking plate is fixed. Thus, the rigidity of the rear wall increases in a region where the locking plate is fixed (hereinafter referred to as “locking plate fixing region”).
- An object of the present invention is to provide an airbag device for a passenger seat that can improve the shock absorbing function of the retainer.
- a passenger seat airbag device includes an airbag that is inflated and deployed from an opening provided in an instrument panel that constitutes an inner wall of a vehicle, and the folded airbag.
- An airbag device for a passenger seat having a retainer for storing and an inflator attached to a bottom portion of the retainer and supplying gas to the airbag, wherein the retainer includes a front wall and a rear corresponding to a vehicle front-rear direction.
- a substantially rectangular frame-shaped retainer body having a wall and a left wall and a right wall corresponding to the left-right direction of the vehicle, and left and right formed at corners of the rear wall, the left wall, and the right wall of the retainer body, respectively.
- a pair of slits and a plurality of hook-shaped hooks that can be engaged with an engagement hole provided in the lid that closes the opening are provided at predetermined intervals in the extending direction, and A locking plate fixed to the rear wall, a region between the slits which is a region between the pair of left and right slits in the rear wall, and a region where the locking plate is fixed in the rear wall
- the locking plate fixing region is configured so as not to overlap.
- gas is supplied from the inflator when the vehicle collides, etc., the airbag is inflated, and the lid is opened to deploy from the opening of the instrument panel into the vehicle compartment. To do.
- the rear wall of the retainer main body is bent / buckled in the region between the pair of left and right slits formed at the corners of the rear wall, the left wall, and the right wall, respectively. Deforms and absorbs the impact at the time of collision.
- the retainer is configured so that the region between the slits on the rear wall and the locking plate fixing region, which is a region where the locking plate on the rear wall is fixed, do not overlap. Accordingly, the rear wall can be deformed in the inter-slit region by making the most of the rigidity reduction function by the slit without being affected by the increase in rigidity in the locking plate fixing region. As a result, the retainer can sufficiently exhibit the shock absorbing function, so that the shock absorbing function can be improved.
- the retainer is configured such that the upper end of the region between the slits and the lower end of the locking plate fixing region substantially coincide with each other. It is characterized by that.
- a slit is formed in the retainer main body and the locking plate is fixed to the rear wall so that the upper end of the inter-slit region and the lower end of the locking plate fixing region substantially coincide.
- the retainer-side airbag device is fixed to a retainer-side fixing portion fixed to a lower side of the rear wall and a strength member of the vehicle.
- a support member that fixes and retains the retainer with respect to the strength member, and the slit has a vertical position where the longitudinal length of the slit is maximum, It is formed so that it may be included in the area
- the vertical position where the longitudinal length of the slit is the maximum is the position of the rear wall. This is the position where the actual plate portion is the smallest, that is, the position where the rigidity of the rear wall is the lowest.
- the vertical position where the longitudinal length of the slit is maximum is included in the region between the support member fixing region and the locking plate fixing region.
- the position where the rigidity is minimized can be located in an area other than the locking plate fixing area and the supporting member fixing area, which are areas where the rigidity is increased.
- the rear wall can be deformed into a pin point at the vertical position where the rigidity is minimized by the slit without being affected by the increase in rigidity in both regions.
- the retainer in the passenger seat airbag device according to a fourth aspect of the present invention, is fixed to a retainer side fixing portion fixed to a lower side of the rear wall and a strength member of the vehicle.
- a support member that fixes and supports the retainer with respect to the strength member, and the region between the slits is a region where the retainer side fixing portion on the rear wall is fixed. It is included in a vertical direction in a region between a certain support member fixing region and the locking plate fixing region.
- the retainer is supported and fixed by the support member with respect to the strength member of the vehicle.
- the support member has a larger thickness than the rear wall of the retainer in order to ensure strength, and has a high rigidity. For this reason, the rigidity of the rear wall is increased in the support member fixing region in which the retainer side fixing portion of the support member is fixed, similarly to the locking plate fixing region.
- the area between the slits is included in the vertical direction in the area between the support member fixing area and the locking plate fixing area.
- region between slits can be located in area
- the rear wall can be deformed in the region between the slits without being affected by the increase in rigidity in the two regions, while the retainer is supported and fixed to the strength member of the vehicle by the support member.
- the retainer is formed on the rear wall of the retainer body at a predetermined interval in the left-right direction of the vehicle. It has a plurality of through holes, and the through holes are formed so that at least a part thereof is in the region between the slits.
- a plurality of through holes are formed in the rear wall of the retainer body at predetermined intervals in the left-right direction of the vehicle, and at least a part of these through holes are located in the region between the slits. Is formed.
- the plurality of through holes are formed so that the vertical positions thereof are equal, and the length of the through holes in the left-right direction of the vehicle is maximum.
- the vertical position is such that it is included in the region between the slits.
- the through-hole is not constant in the left-right direction, such as when the shape of the through-hole is a circle or a long hole
- the position of the through-hole in the left-right direction of the vehicle increases as the position of the through-hole in the left-right direction increases.
- the plate portion is reduced and the rigidity of the rear wall is lowered.
- the through holes are formed at the same height so that the vertical position where the vehicle lateral length of the through hole is maximum is included in the inter-slit region.
- the vertical position where the rigidity reduction function due to the through hole is maximized can be located in the area between the slits. Can be deformed.
- the airbag device for a passenger seat according to a seventh aspect of the present invention is the airbag device according to the sixth aspect, wherein the through hole has a vertical position where the vehicle lateral length of the through hole is maximum, and a longitudinal length of the slit. It is formed so that it may substantially coincide with the maximum vertical position.
- the through hole is formed so that the vertical position where the vehicle lateral length of the through hole is maximum coincides with the vertical position where the longitudinal length of the slit is maximum. Yes.
- the rigidity of a rear wall can be reduced most. Therefore, the rear wall can be deformed into a pin point at the vertical position where the rigidity is minimized by the slit and the through hole without being affected by the increase in rigidity in both regions.
- the through hole has a long hole shape extending in the vertical direction, and the vertical center position is the lower end of the locking plate. It is characterized by being formed so as to substantially coincide with the position.
- the through hole is formed in a long hole shape extending in the vertical direction, the length in the horizontal direction of the through hole is surely maximized at the center position in the vertical direction. Therefore, as in the eighth invention of the present application, by adopting a configuration in which the vertical center position of the through hole substantially coincides with the lower end position of the locking plate, the lower end position of the highly rigid locking plate is maximized by the through hole.
- the rear wall can be easily deformed in the vicinity of its lower end position by utilizing the tensioning action of the highly rigid locking plate in accordance with the lowered position.
- the through hole is formed so that the hook of the locking plate and the position in the vehicle lateral direction substantially coincide with each other. To do.
- the locking plate is fixed to the rear wall of the retainer body by spot welding or the like. At this time, at the position in the vehicle left-right direction corresponding to the hook portion of the locking plate, welding is performed in the gap between adjacent hooks because the hook becomes an obstacle and welding cannot be performed.
- each through hole is formed in the rear wall of the retainer main body so that the hook of the locking plate and the position in the vehicle left-right direction substantially coincide with each other.
- the impact absorbing function of the retainer can be improved.
- FIG. 3 is a rear view of the passenger seat airbag device as viewed from the direction of arrow Y in FIG. 2.
- FIG. 4 is a side sectional view of a passenger seat airbag device taken along the line IV-IV in FIG. 3. It is the rear view which looked at the retainer from the back which is a passenger
- the vehicle front-rear direction and the vehicle left-right direction refer to the vehicle front-rear direction and the left-right direction viewed from a passenger seated in the passenger seat of the vehicle.
- the front-rear direction, the up-down direction, and the left-right direction viewed from the passenger seated in the passenger seat of the vehicle are used as they are.
- FIG. 1 is a side cross-sectional view showing a schematic structure of a passenger seat airbag device 10 of the present embodiment in a state of being installed inside an instrument panel 12.
- 1A shows a normal state where the airbag 14 is not inflated and deployed
- FIG. 1B shows a state when the airbag 14 is inflated and deployed.
- FIG. 2 is a side view showing an external appearance configuration of the passenger seat airbag device 10 in a normal state, and corresponds to an enlarged view of the passenger seat airbag device 10 shown in FIG.
- FIG. 3 is a rear view of the passenger seat airbag device 10 as viewed from the direction of arrow Y in FIG.
- FIG. 4 is a sectional side view of the passenger airbag device 10 taken along the line IV-IV in FIG.
- an instrument panel 12 that constitutes an inner wall of a vehicle as a vehicle (hereinafter, appropriately omitted, “in front of a passenger M seated in the passenger seat S (right side in FIG. 1)”).
- Instrument panel 12 ”).
- the passenger seat airbag device 10 of the present embodiment is installed inside the instrument panel 12.
- the passenger seat airbag apparatus 10 includes an airbag 14, a retainer 16, and a substantially disc-shaped inflator 18.
- the airbag 14 is stored in the retainer 16 in a state of being folded and wrapped in an airbag cover 19.
- An opening (not shown) is formed in the lower portion of the airbag 14.
- the airbag 14 is fixed to the retainer 16 by a presser ring 20 with the upper portion of the inflator 18 inserted in the opening.
- the airbag 14 is inflated to open the airbag cover 19 from a tear line (not shown), and is provided in the instrument panel 12. It bulges from the opening 21 (hereinafter referred to as “panel opening 21” as appropriate) and expands between the instrument panel 12 and the occupant M.
- the retainer 16 stores the airbag 14 in a folded state.
- the retainer 16 has a substantially square frame shape including a front wall 22F and a rear wall 22B corresponding to the vehicle front-rear direction, and a left wall 22L and a right wall 22R corresponding to the vehicle left-right direction.
- the retainer main body 22 and two hook plates 26 and 27 each having a plurality of hook-shaped hooks 24 provided at predetermined intervals in the extending direction.
- the hook plate 26 is fixed to the lower portion of the front wall 22 ⁇ / b> F of the retainer body 22.
- the hook plate 27 (locking plate) is fixed to the upper portion of the rear wall 22B of the retainer body 22.
- the hooks 24 of the hook plates 26, 27 penetrate and engage with the engagement holes 32 provided in the leg portions 30 of the lid 28, so that the retainer 16 is attached to the lid 28. It is attached.
- the thickness of the hook plates 26 and 27 is larger than the thicknesses of the front wall 22F and the rear wall 22B constituting the retainer body 22 in order to ensure strength (see FIG. 4). .
- a pair of left and right slits 34 are formed at the corners of the rear wall 22B, the left wall 22L, and the right wall 22R of the retainer main body 22, respectively.
- a plurality of through holes 36 are formed between the slits 34 in the rear wall 22B at a predetermined interval in the vehicle left-right direction (left-right direction in FIG. 3). These through holes 36 are formed so that the positions of the hook 24 of the hook plate 27 and the vehicle left-right direction substantially coincide.
- the retainer 16 has side brackets 38 on both side surfaces (left surface and right surface) of the retainer main body 22 in the left-right direction of the vehicle.
- the side bracket 38 includes a retainer side fixing portion 38a that is fixed to the retainer main body 22, and a vehicle side fixing portion 38b that is fixed to the vehicle side.
- the retainer side fixing portion 38a is fixed to the left wall 22L and the right wall 22R of the retainer body 22 by welding or the like.
- a bolt hole 38c is formed in the vehicle side fixing portion 38b.
- the vehicle side fixing portion 38b is fixed to a vehicle side strength member (not shown) disposed in the instrument panel 12 by bolts, nuts, and the like (not shown).
- the retainer 16 has a lower bracket 40 (support member) on each of the left and right sides below the retainer body 22.
- the lower bracket 40 is a belt-like plate piece having an intermediate portion bent, and has retainer side fixing portions 40a and 40b fixed to the retainer main body 22 at both ends thereof, and the vehicle side fixed to the vehicle side at the intermediate portion.
- a fixing portion 40c is provided.
- the retainer side fixing portion 40a is fixed to the rear wall 22B of the retainer main body 22 by welding or the like, and the retainer side fixing portion 40b is fixed to the bottom portion 22D of the retainer main body 22 by welding or the like.
- a bolt hole 40d is formed in the vehicle-side fixing portion 40c, and a nut 42 (see FIG.
- the thickness of the lower bracket 40 is larger than the thickness of the rear wall 22B and the bottom 22D constituting the retainer body 22 in order to ensure strength.
- the retainer 16 can be fixedly supported to the strength member by attaching the side bracket 38 and the lower bracket 40 to the strength member on the vehicle side. 1A and 1B, the side bracket 38 and the lower bracket 40 are not shown.
- the inflator 18 is attached by fitting an upper portion into an opening 44 (see also FIG. 6 described later) formed in the bottom 22 ⁇ / b> D of the retainer main body 22.
- the inflator 18 has a fixing flange 18a on its side peripheral surface, and a plurality of bolt holes (not shown) are provided in the flange 18a.
- a plurality of bolt holes (not shown) are provided at locations corresponding to the presser ring 20 described above.
- a plurality of bolt holes 46 are also provided at corresponding portions of the bottom portion 22D of the retainer main body 22. Then, the bolt 48 (see FIGS.
- the lid 28 includes a lid portion 52 that closes the panel opening portion 21 and the leg portion 30 that covers the side including the front-rear direction of the retainer 16.
- the cover portion 52 normally closes the panel opening 21 as shown in FIG. 1A, and is opened by inflation of the airbag 14 as shown in FIG. 1B when the inflator 18 is operated.
- the leg 30 is provided with the engagement holes 32 through which the hooks 24 penetrate at positions corresponding to the hooks 24 of the hook plates 26 and 27, respectively.
- the airbag 14 is folded and stored in the retainer 16 in a normal state as shown in FIG.
- the inflator 18 is actuated by receiving a control signal from a control device (not shown), so that the internal igniting agent is ignited and gas is ejected, whereby the internal pressure is raised and folded.
- the airbag 14 in the state starts to inflate.
- the airbag 14 opens the lid 52 of the lid 28 by its inflating force, bulges from the panel opening 21, and sits on the passenger seat S side. Expand to. Thereby, the inflated airbag 14 restrains the upper body of the occupant M.
- the inflator 18 is not actuated so that the airbag 14 does not expand. Therefore, as shown by an arrow X in FIG. 1A, the occupant M may hit a part of the body, for example, the head, on the rear side of the lid 52 in the instrument panel 12 or the lid 28 due to the reaction of the collision. .
- the rear wall 22B of the retainer main body 22 is deformed and absorbs an impact at the time of collision. The details will be described below.
- FIG. 5 is a rear view of the retainer 16 as viewed from the rear, which is the passenger side. In FIG. 5, the side bracket 38 is not shown.
- a plurality of (six in this example) hooks 24 are provided on the upper portion of the rear wall 22 ⁇ / b> B of the retainer body 22 of the retainer 16 at a predetermined interval in the extending direction (left and right direction in FIG. 5).
- the hook plate 27 provided in this embodiment is fixed by three spot welds 54 in this example.
- the hook plate 27 is disposed such that the upper end position is on the upper side of the upper end position of the rear wall 22B.
- the hook 24 protrudes to the rear side (the front side in FIG. 5) above the upper end position of the rear wall 22B.
- the hook plate 27 is arranged so that the lower end position thereof substantially coincides with the upper end positions of the pair of slits 34 formed on the left and right sides of the rear wall 22B (in detail, slightly on the upper side).
- an inter-slit area SA (shaded portion in FIG. 5) that is an area between the pair of left and right slits 34 on the rear wall 22B and a hook plate fixing area that is an area to which the hook plate 27 is fixed on the rear wall 22B.
- the arrangement configuration is such that PA (locking plate fixing region; hatched portion in FIG. 5) does not overlap in the vertical direction (vertical direction in FIG. 5). That is, in the inter-slit area SA, the rigidity is reduced by the fact that the real plate portion of the rear wall 22B is reduced by the pair of left and right slits 34. However, in the hook plate fixing area PA, the hook having a larger thickness than the rear wall 22B.
- the configuration in which these areas are separated makes it possible to maximize the rigidity reduction function by the slit 34 without being affected by the increase in rigidity in the hook plate fixing area PA. Taking advantage of this, the rear wall 22B can be deformed in the inter-slit area SA.
- the retainer side fixing portions 40a of the lower bracket 40 are fixed to the lower portion of the rear wall 22B on both the left and right sides by spot welding 54 in this example.
- the upper end position of the retainer side fixing portion 40a is arranged to be slightly above the lower end positions of the pair of slits 34 formed on the left and right sides of the rear wall 22B, and the retainer side fixing portion 40a on the rear wall 22B is
- the bracket fixing area BA supporting member fixing area; hatched portion in FIG. 5
- the inter-slit area SA are arranged to slightly overlap in the vertical direction.
- the slit 34 is formed in a long hole shape whose both ends are arcuate, and the center position C in the width direction of the slit 34 (hereinafter referred to as “slit center position C”) is the length of the slit 34. This is the vertical position where the direction length is maximum.
- the slit center position C is included in a region between the bracket fixing region BA and the hook plate fixing region PA in the rear wall 22B (up and down range indicated by a double arrow Z in FIG. 5).
- the arrangement is simple. That is, in the bracket fixing area BA, similarly to the hook plate fixing area PA described above, rigidity is increased by fixing the retainer side fixing portion 40a having a thickness larger than that of the rear wall 22B.
- the slit center position C is the position where the rigidity reduction function of the rear wall 22B by the slit 34 is maximized by the maximum length in the longitudinal direction of the slit, the slit center position C is increased in rigidity.
- a plurality (six in this example) of through-holes 36 are formed between the slits 34 in the rear wall 22B at a predetermined interval in the vehicle left-right direction (left-right direction in FIG. 5). ing. All of these through holes 36 are formed in the same shape and the same height, and at least a part thereof (the lower part in this example) is formed in the inter-slit region SA. More specifically, the vertical position where the length of the through hole 36 in the vehicle left-right direction (left-right direction in FIG. 5) is maximum is formed so as to be included in the inter-slit region SA.
- each through-hole 36 is formed in a long hole shape extending in the vertical direction with both ends being arcuate, and the range of the trunk portion excluding the upper and lower ends has the maximum vehicle left-right length. This is a range (a range indicated by a double-headed arrow W in FIG. 5.
- the arrangement is such that the lower portion of the maximum hole width range W is included in the inter-slit region SA.
- the vertical center position of each through hole 36 is configured to substantially coincide with the lower end position of the hook plate 27.
- the rigidity reduction function of the rear wall 22B by the through hole 36 is maximized by the maximum width of the through hole 36.
- the rigidity reduction function by the through-hole 36 is synergistically maximized, and the rear wall 22B can be easily deformed in the inter-slit region SA.
- FIG. 6A and 6B are perspective views showing a state in which the retainer 16 having the above-described configuration is deformed.
- FIG. 6A is a state before the rear wall 22B is deformed
- FIG. 6B is a state after the rear wall 22B is deformed. Shows the state.
- FIG. 7 is a perspective view of the retainer 16 after deformation as viewed from the oblique front side of the rear wall 22B.
- the lower bracket 40 is not shown in FIG. 6, and the side bracket 38 is not shown in FIG.
- the rear wall 22B of the retainer body 22 in the retainer 16 is usually a straight flat plate.
- the impact is caused through the instrument panel 12 or the lid 52. It is transmitted to the rear wall 22B of the retainer main body 22.
- the rear wall 22B is deformed so as to bend together with the hook plate 27 toward the outside of the retainer main body 22 (the vehicle rear side, that is, the occupant side). Absorb.
- the rear wall 22B bends in a region above the slit center position C in the inter-slit region SA.
- the deformation is the largest in the vicinity of the lower end Wd of the aforementioned maximum hole width range W, which is the range in which the vehicle lateral length of the through hole 36 is maximum.
- W the maximum hole width range
- the function of lowering the rigidity of the rear wall 22B by the plurality of through holes 36 is maximized, and the inter-slit region SA. This is because the rigidity reduction function by the pair of left and right slits 34 is synergistically added and the rear wall 22B is most easily deformed.
- the following effects can be obtained. That is, in the passenger seat airbag device 10 of the present embodiment, when the occupant M hits the instrument panel 12 or the lid portion 52 of the lid 28 at the time of a low-speed collision where the airbag 14 is not required to be deployed.
- the rear wall 22B of the retainer body 22 is deformed by bending in the inter-slit area SA between the pair of left and right slits 34 formed at the corners of the rear wall 22B, the left wall 22L, and the right wall 22R. This absorbs the impact of the collision.
- the retainer 16 is configured so that the inter-slit area SA on the rear wall 22B of the retainer body 22 and the hook plate fixing area PA, which is the area where the hook plate 27 is fixed on the rear wall 22B, do not overlap in the vertical direction.
- the rear wall 22B can be deformed in the inter-slit area SA by making the most of the rigidity reduction function by the slit 34 without being affected by the increase in rigidity in the hook plate fixing area PA.
- the retainer 16 can sufficiently exhibit the shock absorbing function, so that the shock absorbing function can be improved.
- the upper end position of the slit 34 and the lower end position of the hook plate 27 are substantially coincident, in other words, the upper end of the inter-slit area SA and the lower end of the hook plate fixing area PA are substantially coincident.
- the slit 34 is formed in the retainer main body 22 and the hook plate 27 is fixed to the rear wall 22B. Accordingly, the length of the retainer body 22 in the vertical direction can be minimized while preventing the inter-slit area SA and the hook plate fixing area PA from overlapping each other in the vertical direction. As a result, the retainer 16 can be reduced in size.
- the slit center position C where the length in the longitudinal direction of the slit 34 is maximum is included in the region between the bracket fixing region BA and the hook plate fixing region PA. That is, the slit center position C is a position where the actual plate portion of the rear wall 22B is minimized by the slit 34, and is a position where the rigidity reduction function by the slit 34 is maximized.
- the slit center position C in an area other than the hook plate fixing area PA and the bracket fixing area BA, which are areas where the rigidity is increased, without being affected by the increase in rigidity in both areas PA and BA,
- the rear wall 22B can be deformed in the vicinity of the slit center position C, which is a position where the rigidity reduction function by the slit 34 is fully utilized.
- a plurality of through holes 36 are formed in the rear wall 22B of the retainer body 22 at predetermined intervals in the left-right direction of the vehicle, and at least a part of these through holes 36 is formed. It is formed so as to be in the inter-slit area SA.
- the actual plate portion of the rear wall 22B is further reduced by the amount of the through hole 36 in addition to the slit 34, so that the rigidity by the slit 34 is increased.
- the rigidity lowering function by the through hole 36 can be exhibited synergistically. Therefore, the shock absorbing function of the retainer 16 can be further improved.
- the through hole 36 is formed at the same height so that the hole width maximum range W in which the vehicle lateral length of the through hole 36 is maximum is included in the inter-slit region SA. That is, in the maximum hole width range W, the plurality of through holes 36 are positions where the actual plate portion of the rear wall 22B is minimized, and the rigidity reduction function due to the through holes 36 is the maximum. Accordingly, since the vertical position where the rigidity reduction function by the through hole 36 is maximized can be positioned in the inter-slit region SA, the rigidity reduction function by the through hole 36 is utilized to the maximum, and the rear wall 22B is slit. It can be deformed in the inter-region SA.
- the vertical center position of the through hole 36 is generally coincident with the lower end position of the hook plate 27. That is, when the through hole 36 is formed in the shape of a long hole extending in the vertical direction as in this embodiment, the horizontal length of the through hole 36 is surely maximized at the center position in the vertical direction. Therefore, by adopting the above-described configuration, the lower end position of the highly rigid hook plate 27 is aligned with the position where the rigidity is reduced to the maximum by the through hole 36, and the lower end of the hook plate 27 having high rigidity is utilized by utilizing the tensioning action of the highly rigid hook plate 27. The deformation of the rear wall 22B in the vicinity of the position can be promoted.
- each through hole 36 is formed in the rear wall 22B of the retainer body 22 so that the hook 24 of the hook plate 27 and the vehicle left-right position substantially coincide with each other.
- the hook 24 becomes an obstacle in the hook 24 portion of the hook plate 27, and welding work cannot be performed.
- Welding is performed in a gap between adjacent hooks 24.
- the hook plate 27 can be reliably fixed to the rear wall 22B by spot welding in the gap between the hooks 24. Further, the welding workability when fixing the hook plate 27 to the rear wall 22B can be improved.
- FIG. 8 is a rear view of the retainer 16A which is such a modification.
- illustration of the side bracket 38 is omitted.
- the upper end position of the retainer side fixing portion 40 a of the lower bracket 40 is arranged so as to be slightly below the lower end position of the slit 34.
- the area BA and the inter-slit area SA are arranged so as not to overlap in the vertical direction. In other words, the inter-slit area SA is included in the vertical direction in the area between the bracket fixing area BA and the hook plate fixing area PA.
- the inter-slit area SA can be positioned in an area other than the hook plate fixing area PA and the bracket fixing area BA, which are areas where the rigidity is increased.
- the rear wall 22B is deformed in the inter-slit area SA without being affected by the increase in rigidity in both the areas PA and BA, while the retainer 16A is supported and fixed to the strength member of the vehicle by the lower bracket 40. Can do.
- slit center position C which is the center position in the width direction of slit 34, has the maximum vehicle left-right direction length of through hole 36.
- the vertical position at which the vehicle lateral length of the through hole 36 is maximized and the vertical position at which the longitudinal length of the slit 34 is maximized are not included in the maximum hole width range W that is the range.
- a configuration in which these positions coincide may be adopted.
- FIG. 9 is a rear view of the retainer 16B which is such a modification.
- the side bracket 38 is not shown.
- the through hole 36 is formed longer in the vertical direction than in the above-described embodiment, and the length of the through hole 36 in the vehicle left-right direction (left-right direction in FIG. 9).
- the lower end position of the maximum hole width range W which is the range in which is maximum, generally coincides with the slit center position C, which is the center position of the slit 34 in the width direction (vertical direction in FIG. 9). That is, the vertical position where the vehicle left-right direction length of the through hole 36 is maximum coincides with the vertical position where the longitudinal length of the slit 34 is maximum.
- the solid plate portion of the rear wall 22B becomes the smallest, so that the rigidity of the rear wall 22B can be reduced most. Therefore, the rear wall 22B can be deformed to the pin point at the vertical position where the rigidity is minimized by the slit 34 and the through hole 36 without being affected by the rigidity increase in the hook plate fixing area PA and the bracket fixing area BA. it can.
- the rear wall 22B, the hook plate 27, and the retainer side fixing portion 40a are fixed by spot welding 54.
- the present invention is not limited to this. It may be fixed.
- the front wall 22F and the hook plate 26 are fixed, the bottom 22D and the lower bracket 40 are fixed to the retainer side fixing portion 40b, and the left and right walls 22L and 22R and the side bracket 38 are fixed to the retainer side fixing portion 38a. The same applies to.
- the slits 34 and the through holes 36 have long holes.
- the shape is not limited to this, and may be rectangular, circular, or elliptical.
- the shape of the end portion of the slit 34 or the through hole 36 may be a triangular shape instead of an arc shape.
- Airbag Device for Passenger Seat 12 Instrument Panel 14
- Vehicle side fixing part BA Bracket fixing area (supporting member fixing area) C Slit center position (vertical direction position)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
An airbag device for a front passenger seat, configured in such a manner that a retainer has an improved impact absorbing function.
When the head, etc. of an occupant (M) collides with the instrument panel (12) or the cover section (52) of a lid (28) in a low-speed collision, etc., the rear wall (22B) of a retainer body (22) is bent and deformed in an inter-slit region (SA) between a pair of left and right slits (34) each formed at a corner between the rear wall (22B) and each of a left wall (22L) and a right wall (22R), and this absorbs an impact due to the collision. The inter-slit region (SA) in the rear wall (22B) of the retainer body (22) and a hook plate affixation region (PA) which is the region of the rear wall (22B) to which a hook plate (27) is affixed are disposed so as not to be superposed on each other.
Description
本発明は、自動車などの車両に備えられる助手席用エアバッグ装置に関する。
The present invention relates to an airbag device for a passenger seat provided in a vehicle such as an automobile.
従来、インフレータの作動によりエアバッグを膨張させ、助手席側の乗員を拘束する助手席用エアバッグ装置が使用されている。一般に助手席用エアバッグ装置は、車両衝突時等にガスを発生させるインフレータと、このインフレータのガスにより膨張展開するエアバッグと、このエアバッグを折り畳んだ状態で収容するリテーナとを有している。この助手席用エアバッグ装置は、インフレータ及びエアバッグを収容したリテーナにリッドを取り付けた状態で、インストルメントパネルの開口部に取り付けられる。
Conventionally, an airbag device for a passenger seat that inflates an airbag by operating an inflator and restrains a passenger on the passenger seat side has been used. Generally, an airbag device for a passenger seat includes an inflator that generates gas at the time of a vehicle collision, an airbag that is inflated and deployed by the gas of the inflator, and a retainer that accommodates the airbag in a folded state. . The passenger seat airbag device is attached to an opening of an instrument panel in a state where a lid is attached to a retainer that houses an inflator and an airbag.
リテーナの車両前後方向に対応する前壁及び後壁には、係止板が固定されている。この係止板には、その延在方向に適宜な間隔をおいて複数の鉤状のフックが一体的に設けられている。またリッドには上記係止板の各フックに対応する位置に当該フックを係合可能な係合孔がそれぞれ設けられている。この係合孔に係止板のフックをそれぞれ係合させることにより、リテーナにリッドが取り付けられる。
¡Locking plates are fixed to the front and rear walls of the retainer corresponding to the longitudinal direction of the vehicle. The locking plate is integrally provided with a plurality of hook-shaped hooks at appropriate intervals in the extending direction. In addition, the lid is provided with engagement holes that can engage the hooks at positions corresponding to the hooks of the locking plate. The lid is attached to the retainer by engaging the hooks of the locking plate with the engaging holes.
このような構成の助手席用エアバッグ装置においては、車両の衝突時等にインフレータが作動するとエアバッグが膨張し、リッドを開放させてエアバッグが車両室内に展開する。一方で、エアバッグの展開不要な低速衝突時等には、乗員がその身体の一部、例えば頭部をインストルメントパネルやリッドにぶつけるおそれがある。このため、助手席用エアバッグ装置は、乗員がぶつかってきたときにリテーナを徐々に変形させて、ぶつかり時の衝撃を吸収する衝撃吸収機能を有する必要がある。
In the passenger-side airbag device having such a configuration, when the inflator is actuated during a vehicle collision or the like, the airbag is inflated, the lid is opened, and the airbag is deployed in the vehicle compartment. On the other hand, at the time of a low-speed collision that does not require the airbag to be deployed, the occupant may hit part of the body, for example, the head, against the instrument panel or the lid. For this reason, the airbag device for a passenger seat needs to have an impact absorption function that gradually deforms the retainer when an occupant hits and absorbs an impact at the time of collision.
このようなリテーナに衝撃吸収機能を持たせた助手席用エアバッグ装置としては、例えば特許文献1に記載のものが知られている。この助手席用エアバッグ装置では、リテーナ(ケーシング本体)の後壁における左右両側の角部に、左右一対のスリットが上下方向に複数段となるように形成されている。そして、乗員がインストルメントパネルやリッドにぶつかることでその衝撃がリテーナに伝わると、リテーナの後壁が各スリットを押し潰すようにして開口部内側に変形し、衝撃を吸収する。
As an airbag device for a passenger seat in which such a retainer has a shock absorbing function, for example, the one described in Patent Document 1 is known. In this passenger seat airbag device, a pair of left and right slits are formed in a plurality of steps in the vertical direction at corners on both the left and right sides of the rear wall of the retainer (casing body). When the occupant hits the instrument panel or the lid and the impact is transmitted to the retainer, the rear wall of the retainer deforms into the opening so as to crush each slit and absorbs the impact.
一般に、リテーナ後壁の左右両側の角部に左右一対となるスリットを形成した場合、後壁の剛性は左右一対のスリット同士の間の領域(以下「スリット間領域」と称する)において低下する。したがって、衝撃がリテーナに伝わると、後壁は上記スリット間領域において屈曲・座屈等を生じ、その結果変形する。
Generally, when a pair of left and right slits are formed at the left and right corners of the retainer rear wall, the rigidity of the rear wall decreases in a region between the pair of left and right slits (hereinafter referred to as an “inter-slit region”). Therefore, when the impact is transmitted to the retainer, the rear wall is bent or buckled in the region between the slits, and is deformed as a result.
一方で、一般に係止板はリテーナを構成する壁部よりも厚みが大きく剛性が大きい。このため、後壁は係止板が固定された部分では屈曲、座屈等の変形をしにくくなる。このように、後壁の剛性は係止板が固定された領域(以下「係止板固定領域」と称する)においては増大する。
On the other hand, the locking plate is generally thicker and stiffer than the wall portion constituting the retainer. For this reason, it becomes difficult for the rear wall to undergo deformation such as bending and buckling at the portion where the locking plate is fixed. Thus, the rigidity of the rear wall increases in a region where the locking plate is fixed (hereinafter referred to as “locking plate fixing region”).
上記従来技術においては、上下方向に複数段形成されたスリットの一部が、係止板の固定部分と上下方向において一部重複する構成となっている。すなわち、上記スリット間領域と上記係止板固定領域とが上下方向において一部重複している。このため、重複部分においてはスリットによる剛性低下機能が相殺されてしまい、リテーナが衝撃吸収機能を十分に発揮できる構成であるとは言えなかった。
In the above prior art, a part of the slit formed in a plurality of stages in the vertical direction partially overlaps with the fixed part of the locking plate in the vertical direction. That is, the inter-slit area and the locking plate fixing area partially overlap in the vertical direction. For this reason, the rigidity reduction function due to the slits is canceled out in the overlapping portion, and it cannot be said that the retainer has a configuration capable of sufficiently exhibiting the shock absorbing function.
本発明の目的は、リテーナの衝撃吸収機能を向上できる助手席用エアバッグ装置を提供することにある。
An object of the present invention is to provide an airbag device for a passenger seat that can improve the shock absorbing function of the retainer.
上記目的を達成するために、第1発明の助手席用エアバッグ装置は、車両の内壁を構成するインストルメントパネルに設けられた開口部から膨張展開するエアバッグと、折り畳まれた前記エアバッグを収納するリテーナと、前記リテーナの底部に取り付けられ、前記エアバッグにガスを供給するインフレータと、を有する助手席用エアバッグ装置であって、前記リテーナは、車両前後方向に対応する前壁及び後壁、並びに車両左右方向に対応する左壁及び右壁を備えた略四角枠形状のリテーナ本体と、前記リテーナ本体の前記後壁と前記左壁及び右壁との角部にそれぞれ形成された左右一対のスリットと、前記開口部を塞ぐリッドに設けた係合孔に係合可能な複数の鉤状のフックを延在方向に所定の間隔をおいて備え、前記リテーナ本体の前記後壁に固定された係止板と、を有し、前記後壁における前記左右一対のスリット同士の間の領域であるスリット間領域と、前記後壁における前記係止板が固定された領域である係止板固定領域とが、重ならないように構成されていることを特徴とする。
In order to achieve the above object, a passenger seat airbag device according to a first aspect of the present invention includes an airbag that is inflated and deployed from an opening provided in an instrument panel that constitutes an inner wall of a vehicle, and the folded airbag. An airbag device for a passenger seat having a retainer for storing and an inflator attached to a bottom portion of the retainer and supplying gas to the airbag, wherein the retainer includes a front wall and a rear corresponding to a vehicle front-rear direction. A substantially rectangular frame-shaped retainer body having a wall and a left wall and a right wall corresponding to the left-right direction of the vehicle, and left and right formed at corners of the rear wall, the left wall, and the right wall of the retainer body, respectively. A pair of slits and a plurality of hook-shaped hooks that can be engaged with an engagement hole provided in the lid that closes the opening are provided at predetermined intervals in the extending direction, and A locking plate fixed to the rear wall, a region between the slits which is a region between the pair of left and right slits in the rear wall, and a region where the locking plate is fixed in the rear wall The locking plate fixing region is configured so as not to overlap.
本願第1発明の助手席用エアバッグ装置においては、車両の衝突時等にはインフレータよりガスが供給されてエアバッグが膨張し、リッドを開放させてインストルメントパネルの開口部から車両室内に展開する。
In the passenger seat airbag device according to the first aspect of the present invention, gas is supplied from the inflator when the vehicle collides, etc., the airbag is inflated, and the lid is opened to deploy from the opening of the instrument panel into the vehicle compartment. To do.
一方、エアバッグの展開不要な低速衝突時等には、乗員がその身体の一部、例えば頭部をインストルメントパネルやリッドにぶつけるおそれがある。このような場合には、リテーナ本体の後壁が、当該後壁と左壁及び右壁との角部にそれぞれ形成された左右一対のスリット同士の間のスリット間領域において屈曲・座屈等の変形を生じ、これによりぶつかり時の衝撃を吸収する。
On the other hand, in the case of a low-speed collision that does not require the airbag to be deployed, an occupant may hit a part of the body, for example, the head, against the instrument panel or lid. In such a case, the rear wall of the retainer main body is bent / buckled in the region between the pair of left and right slits formed at the corners of the rear wall, the left wall, and the right wall, respectively. Deforms and absorbs the impact at the time of collision.
ここで本願第1発明においては、後壁における上記スリット間領域と、後壁における係止板が固定された領域である係止板固定領域とが、重ならないようにリテーナが構成されている。これにより、係止板固定領域における剛性増大の影響を受けることなく、スリットによる剛性低下機能を最大限に活かして、後壁をスリット間領域で変形させることができる。その結果、リテーナが衝撃吸収機能を十分に発揮できるので、衝撃吸収機能を向上できる。
Here, in the first invention of the present application, the retainer is configured so that the region between the slits on the rear wall and the locking plate fixing region, which is a region where the locking plate on the rear wall is fixed, do not overlap. Accordingly, the rear wall can be deformed in the inter-slit region by making the most of the rigidity reduction function by the slit without being affected by the increase in rigidity in the locking plate fixing region. As a result, the retainer can sufficiently exhibit the shock absorbing function, so that the shock absorbing function can be improved.
第2発明の助手席用エアバッグ装置は、上記第1発明において、前記リテーナは、前記スリット間領域の上端と、前記係止板固定領域の下端とが、概ね一致するように構成されていることを特徴とする。
According to a second aspect of the present invention, in the first aspect, the retainer is configured such that the upper end of the region between the slits and the lower end of the locking plate fixing region substantially coincide with each other. It is characterized by that.
本願第2発明においては、スリット間領域の上端と係止板固定領域の下端とが概ね一致するように、リテーナ本体にスリットが形成されると共に後壁に係止板が固定される。これにより、スリット間領域と係止板固定領域とが上下方向において互いに重ならないようにしつつ、リテーナ本体の上下方向長さを必要最小限とすることができる。その結果、リテーナの小型化を図ることができる。
In the second invention of the present application, a slit is formed in the retainer main body and the locking plate is fixed to the rear wall so that the upper end of the inter-slit region and the lower end of the locking plate fixing region substantially coincide. This makes it possible to minimize the vertical length of the retainer body while preventing the inter-slit region and the locking plate fixing region from overlapping each other in the vertical direction. As a result, the retainer can be reduced in size.
第3発明の助手席用エアバッグ装置は、上記第1又は第2発明において、前記リテーナは、前記後壁の下側に固定されたリテーナ側固定部と、前記車両の強度部材に固定される車両側固定部とを備えた、前記リテーナを前記強度部材に対して固定支持する支持部材を有しており、前記スリットは、当該スリットの長手方向長さが最大となる上下方向位置が、前記後壁における前記リテーナ側固定部が固定された領域である支持部材固定領域と、前記係止板固定領域との間の領域に包含されるように、形成されていることを特徴とする。
According to a third aspect of the present invention, in the first or second aspect, the retainer-side airbag device is fixed to a retainer-side fixing portion fixed to a lower side of the rear wall and a strength member of the vehicle. A support member that fixes and retains the retainer with respect to the strength member, and the slit has a vertical position where the longitudinal length of the slit is maximum, It is formed so that it may be included in the area | region between the support member fixing | fixed area | region which is the area | region where the said retainer side fixing | fixed part in the rear wall was fixed, and the said latching board fixing | fixed area | region.
例えばスリットの端部形状が円弧や三角形状である場合のように、スリットの長手方向長さが上下方向において一定でない場合、スリットの長手方向長さが最大となる上下方向位置が、後壁の実板部分が最も少なくなる位置、すなわち後壁の剛性が最も低下する位置となる。
For example, when the slit length is not constant in the vertical direction, as in the case where the end shape of the slit is an arc or a triangle, the vertical position where the longitudinal length of the slit is the maximum is the position of the rear wall. This is the position where the actual plate portion is the smallest, that is, the position where the rigidity of the rear wall is the lowest.
そこで本願第3発明においては、スリットの長手方向長さが最大となる上下方向位置が、支持部材固定領域と係止板固定領域との間の領域に包含されるような構成とする。これにより、剛性が最小となる位置を、剛性が増大する領域である係止板固定領域及び支持部材固定領域以外の領域に位置させることができる。その結果、両領域における剛性増大の影響を受けることなく、スリットにより剛性が最小となる上下方向位置において、後壁をピンポイントに変形させることができる。
Therefore, in the third invention of the present application, the vertical position where the longitudinal length of the slit is maximum is included in the region between the support member fixing region and the locking plate fixing region. Thereby, the position where the rigidity is minimized can be located in an area other than the locking plate fixing area and the supporting member fixing area, which are areas where the rigidity is increased. As a result, the rear wall can be deformed into a pin point at the vertical position where the rigidity is minimized by the slit without being affected by the increase in rigidity in both regions.
第4発明の助手席用エアバッグ装置は、上記第1又は第2発明において、前記リテーナは、前記後壁の下側に固定されたリテーナ側固定部と、前記車両の強度部材に固定される車両側固定部とを備えた、前記リテーナを前記強度部材に対して固定支持する支持部材を有しており、前記スリット間領域は、前記後壁における前記リテーナ側固定部が固定された領域である支持部材固定領域と、前記係止板固定領域との間の領域に、上下方向において包含されていることを特徴とする。
In the passenger seat airbag device according to a fourth aspect of the present invention, in the first or second aspect of the invention, the retainer is fixed to a retainer side fixing portion fixed to a lower side of the rear wall and a strength member of the vehicle. A support member that fixes and supports the retainer with respect to the strength member, and the region between the slits is a region where the retainer side fixing portion on the rear wall is fixed. It is included in a vertical direction in a region between a certain support member fixing region and the locking plate fixing region.
本願第4発明においては、リテーナは車両の強度部材に対して支持部材により支持固定される。一般にこの支持部材は、強度を確保するためにリテーナの後壁よりも厚みが大きくなっており、剛性が大きい。このため後壁は、係止板固定領域と同様に、支持部材のリテーナ側固定部が固定された支持部材固定領域においても剛性が増大する。
In the fourth invention of the present application, the retainer is supported and fixed by the support member with respect to the strength member of the vehicle. In general, the support member has a larger thickness than the rear wall of the retainer in order to ensure strength, and has a high rigidity. For this reason, the rigidity of the rear wall is increased in the support member fixing region in which the retainer side fixing portion of the support member is fixed, similarly to the locking plate fixing region.
そこで本願第4発明においては、スリット間領域が、支持部材固定領域と係止板固定領域との間の領域に上下方向において包含された構成とする。これにより、スリット間領域を、剛性が増大する領域である係止板固定領域及び支持部材固定領域以外の領域に位置させることができる。その結果、リテーナを支持部材により車両の強度部材に支持固定する構造としつつ、上記両領域における剛性増大の影響を受けることなく、後壁をスリット間領域で変形させることができる。
Therefore, in the fourth invention of the present application, the area between the slits is included in the vertical direction in the area between the support member fixing area and the locking plate fixing area. Thereby, the area | region between slits can be located in area | regions other than the latching board fixation area | region which is an area | region where rigidity increases, and a support member fixation area | region. As a result, the rear wall can be deformed in the region between the slits without being affected by the increase in rigidity in the two regions, while the retainer is supported and fixed to the strength member of the vehicle by the support member.
第5発明の助手席用エアバッグ装置は、上記第1乃至第4発明のいずれかにおいて、前記リテーナは、前記リテーナ本体の前記後壁に前記車両左右方向に所定の間隔をおいて形成された複数の貫通孔を有しており、前記貫通孔は、少なくとも一部が前記スリット間領域内となるように形成されていることを特徴とする。
In the passenger seat airbag device according to a fifth aspect of the present invention, in any one of the first to fourth aspects, the retainer is formed on the rear wall of the retainer body at a predetermined interval in the left-right direction of the vehicle. It has a plurality of through holes, and the through holes are formed so that at least a part thereof is in the region between the slits.
本願第5発明においては、リテーナ本体の後壁に車両左右方向に所定の間隔をおいて複数の貫通孔が形成されており、これらの貫通孔はその少なくとも一部がスリット間領域内となるように形成されている。これにより、スリット間領域内における貫通孔が形成された上下方向位置においては、後壁の実板部分がスリットに加えて貫通孔の分だけさらに少なくなるため、スリットによる剛性低下機能に加えてさらに貫通孔による剛性低下機能を相乗的に発揮させることができる。したがって、リテーナの衝撃吸収機能をさらに向上できる。
In the fifth invention of the present application, a plurality of through holes are formed in the rear wall of the retainer body at predetermined intervals in the left-right direction of the vehicle, and at least a part of these through holes are located in the region between the slits. Is formed. As a result, in the vertical position where the through hole is formed in the area between the slits, the actual plate portion of the rear wall is further reduced by the amount of the through hole in addition to the slit. The function of reducing the rigidity due to the through hole can be exhibited synergistically. Therefore, the impact absorbing function of the retainer can be further improved.
第6発明の助手席用エアバッグ装置は、上記第5発明において、前記複数の貫通孔は、上下方向位置が等しくなるように形成され、且つ、当該貫通孔の前記車両左右方向長さが最大となる上下方向位置が、前記スリット間領域に含まれるように、形成されていることを特徴とする。
According to a sixth aspect of the present invention, in the fifth aspect of the invention, the plurality of through holes are formed so that the vertical positions thereof are equal, and the length of the through holes in the left-right direction of the vehicle is maximum. The vertical position is such that it is included in the region between the slits.
例えば貫通孔の形状が円や長孔状である場合のように、貫通孔の車両左右方向長さが上下方向において一定でない場合、貫通孔の車両左右方向長さが大きい位置ほど後壁の実板部分が少なくなり、後壁の剛性が低下する。
For example, when the through-hole is not constant in the left-right direction, such as when the shape of the through-hole is a circle or a long hole, the position of the through-hole in the left-right direction of the vehicle increases as the position of the through-hole in the left-right direction increases. The plate portion is reduced and the rigidity of the rear wall is lowered.
そこで本願第6発明においては、貫通孔の車両左右方向長さが最大となる上下方向位置がスリット間領域に含まれるように、同じ高さで貫通孔を形成する。これにより、貫通孔による剛性低下機能が最大となる上下方向位置を、スリット間領域内に位置させることができるので、貫通孔による剛性低下機能を最大限に活かして、後壁をスリット間領域で変形させることができる。
Therefore, in the sixth invention of the present application, the through holes are formed at the same height so that the vertical position where the vehicle lateral length of the through hole is maximum is included in the inter-slit region. As a result, the vertical position where the rigidity reduction function due to the through hole is maximized can be located in the area between the slits. Can be deformed.
第7発明の助手席用エアバッグ装置は、上記第6発明において、前記貫通孔は、当該貫通孔の前記車両左右方向長さが最大となる上下方向位置が、前記スリットの長手方向長さが最大となる上下方向位置と概ね一致するように、形成されていることを特徴とする。
The airbag device for a passenger seat according to a seventh aspect of the present invention is the airbag device according to the sixth aspect, wherein the through hole has a vertical position where the vehicle lateral length of the through hole is maximum, and a longitudinal length of the slit. It is formed so that it may substantially coincide with the maximum vertical position.
本願第7発明においては、貫通孔の車両左右方向長さが最大となる上下方向位置が、スリットの長手方向長さが最大となる上下方向位置と概ね一致するように、貫通孔が形成されている。これにより、当該上下方向位置では、後壁の実板部分が最も少なくなるため、後壁の剛性を最も低下させることができる。したがって、両領域における剛性増大の影響を受けることなく、スリット及び貫通孔により剛性が最小となる上下方向位置において、後壁をピンポイントに変形させることができる。
In the seventh invention of the present application, the through hole is formed so that the vertical position where the vehicle lateral length of the through hole is maximum coincides with the vertical position where the longitudinal length of the slit is maximum. Yes. Thereby, in the said up-down direction position, since the real board part of a rear wall becomes the smallest, the rigidity of a rear wall can be reduced most. Therefore, the rear wall can be deformed into a pin point at the vertical position where the rigidity is minimized by the slit and the through hole without being affected by the increase in rigidity in both regions.
第8発明の助手席用エアバッグ装置は、上記第5発明において、前記貫通孔は、上下方向に伸びた長孔形状を有しており、その上下方向中心位置が、前記係止板の下端位置と概ね一致するように、形成されていることを特徴とする。
In the passenger seat airbag apparatus according to an eighth aspect of the present invention, in the fifth aspect, the through hole has a long hole shape extending in the vertical direction, and the vertical center position is the lower end of the locking plate. It is characterized by being formed so as to substantially coincide with the position.
貫通孔を上下方向に伸びた長孔形状に形成した場合、その上下方向中心位置では貫通孔の左右方向長さが確実に最大となる。したがって、本願第8発明のように、貫通孔の上下方向中心位置が係止板の下端位置と概ね一致する構成とすることで、剛性の高い係止板の下端位置を貫通孔により剛性が最大限に低下された位置に合わせ、剛性の高い係止板による突っ張り作用を利用してその下端位置近傍での後壁の変形を促進できる。
When the through hole is formed in a long hole shape extending in the vertical direction, the length in the horizontal direction of the through hole is surely maximized at the center position in the vertical direction. Therefore, as in the eighth invention of the present application, by adopting a configuration in which the vertical center position of the through hole substantially coincides with the lower end position of the locking plate, the lower end position of the highly rigid locking plate is maximized by the through hole. The rear wall can be easily deformed in the vicinity of its lower end position by utilizing the tensioning action of the highly rigid locking plate in accordance with the lowered position.
第9発明の助手席用エアバッグ装置は、上記第5発明において、前記貫通孔は、前記係止板のフックと前記車両左右方向位置が概ね一致するように、形成されていることを特徴とする。
According to a ninth aspect of the present invention, in the fifth aspect of the invention, the through hole is formed so that the hook of the locking plate and the position in the vehicle lateral direction substantially coincide with each other. To do.
一般に係止板はリテーナ本体の後壁に対しスポット溶接等により固定される。このとき、係止板のフック部分に対応する車両左右方向位置においては、当該フックが邪魔となり溶接ができないことから、隣り合うフック間の隙間において溶接が行われる。
Generally, the locking plate is fixed to the rear wall of the retainer body by spot welding or the like. At this time, at the position in the vehicle left-right direction corresponding to the hook portion of the locking plate, welding is performed in the gap between adjacent hooks because the hook becomes an obstacle and welding cannot be performed.
本願第9発明においては、係止板のフックと車両左右方向位置がそれぞれ概ね一致するように、リテーナ本体の後壁に各貫通孔が形成されている。これにより、係止板における隣り合うフック間の隙間は、後壁における隣り合う貫通孔間の実板部分に対応することになる。その結果、当該フック間の隙間においてスポット溶接を行うことで、係止板を後壁に対し確実に固定できる。また、係止板を後壁に固定する際の溶接作業性を向上できる。
In the ninth invention of the present application, each through hole is formed in the rear wall of the retainer main body so that the hook of the locking plate and the position in the vehicle left-right direction substantially coincide with each other. Thereby, the clearance gap between the adjacent hooks in a latching board respond | corresponds to the real board part between the adjacent through-holes in a rear wall. As a result, by performing spot welding in the gap between the hooks, the locking plate can be reliably fixed to the rear wall. Moreover, the welding workability | operativity at the time of fixing a locking plate to a rear wall can be improved.
本発明によれば、リテーナの衝撃吸収機能を向上できる。
According to the present invention, the impact absorbing function of the retainer can be improved.
以下、本発明の一実施の形態を、図面を参照しつつ説明する。なお、以下の説明において、車両前後方向及び車両左右方向とは、車両の助手席に着座した乗員から見た車両の前後方向及び左右方向をいう。また、空間内の方向を示す語句として、車両の助手席に着座した乗員から見た前後方向、上下方向、左右方向をそのまま用いる。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the vehicle front-rear direction and the vehicle left-right direction refer to the vehicle front-rear direction and the left-right direction viewed from a passenger seated in the passenger seat of the vehicle. In addition, as a phrase indicating a direction in the space, the front-rear direction, the up-down direction, and the left-right direction viewed from the passenger seated in the passenger seat of the vehicle are used as they are.
図1は、インストルメントパネル12の内部に設置した状態での本実施形態の助手席用エアバッグ装置10の概略構造を示す側断面図である。なお、図1(a)はエアバッグ14が膨張展開していない平常時の状態を示し、図1(b)はエアバッグ14の膨張展開時の状態を示している。また図2は、助手席用エアバッグ装置10の平常時の外観構成を表す側面図であり、図1(a)に示す助手席用エアバッグ装置10の拡大図に相当するものである。また図3は、助手席用エアバッグ装置10を図2中矢印Y方向から見た後面図である。また図4は、図3中IV-IV断面による助手席用エアバッグ装置10の側断面図である。
FIG. 1 is a side cross-sectional view showing a schematic structure of a passenger seat airbag device 10 of the present embodiment in a state of being installed inside an instrument panel 12. 1A shows a normal state where the airbag 14 is not inflated and deployed, and FIG. 1B shows a state when the airbag 14 is inflated and deployed. FIG. 2 is a side view showing an external appearance configuration of the passenger seat airbag device 10 in a normal state, and corresponds to an enlarged view of the passenger seat airbag device 10 shown in FIG. FIG. 3 is a rear view of the passenger seat airbag device 10 as viewed from the direction of arrow Y in FIG. FIG. 4 is a sectional side view of the passenger airbag device 10 taken along the line IV-IV in FIG.
図1に示すように、助手席Sに着座している乗員Mの前方(図1中右方)には、車両としての自動車の内壁を構成するインストルメントパネル12(以下適宜、省略して「インパネ12」と称する)が配置されている。本実施形態の助手席用エアバッグ装置10は、このインパネ12の内部に設置される。助手席用エアバッグ装置10は、エアバッグ14と、リテーナ16と、略円盤型のインフレータ18とを有している。
As shown in FIG. 1, an instrument panel 12 that constitutes an inner wall of a vehicle as a vehicle (hereinafter, appropriately omitted, “in front of a passenger M seated in the passenger seat S (right side in FIG. 1)”). Instrument panel 12 ”). The passenger seat airbag device 10 of the present embodiment is installed inside the instrument panel 12. The passenger seat airbag apparatus 10 includes an airbag 14, a retainer 16, and a substantially disc-shaped inflator 18.
図4に示すように、エアバッグ14は、折り畳まれてエアバッグカバー19に包まれた状態でリテーナ16に収納されている。このエアバッグ14の下部には開口部(図示省略)が形成されている。エアバッグ14は、この開口部にインフレータ18の上部が差し込まれた状態で、押えリング20によってリテーナ16に固定されている。図1に示すように、インフレータ18が作動してガスが供給されると、エアバッグ14は、膨張してエアバッグカバー19をティアライン(図示省略)から開裂させ、上記インパネ12に設けられた開口部21(以下適宜「パネル開口部21」と称する)から膨出してインパネ12と乗員Mとの間に展開する。
As shown in FIG. 4, the airbag 14 is stored in the retainer 16 in a state of being folded and wrapped in an airbag cover 19. An opening (not shown) is formed in the lower portion of the airbag 14. The airbag 14 is fixed to the retainer 16 by a presser ring 20 with the upper portion of the inflator 18 inserted in the opening. As shown in FIG. 1, when the inflator 18 is activated and gas is supplied, the airbag 14 is inflated to open the airbag cover 19 from a tear line (not shown), and is provided in the instrument panel 12. It bulges from the opening 21 (hereinafter referred to as “panel opening 21” as appropriate) and expands between the instrument panel 12 and the occupant M.
リテーナ16は、折り畳まれた状態のエアバッグ14を収納する。図2及び図3に示すように、このリテーナ16は、車両前後方向に対応する前壁22F及び後壁22B、並びに車両左右方向に対応する左壁22L及び右壁22Rを備えた略四角枠形状のリテーナ本体22と、複数の鉤状のフック24を延在方向に所定の間隔をおいて備えた2枚のフック板26,27とを有している。図2及び図4に示すように、フック板26は、リテーナ本体22の上記前壁22Fの下部に固定されている。一方、フック板27(係止板)は、リテーナ本体22の上記後壁22Bの上部に固定されている。図1に示すように、これらフック板26,27の各フック24が、リッド28の脚部30に設けられた係合孔32にそれぞれ貫通して係合することにより、リテーナ16がリッド28に取り付けられる。このような係合用途のため、フック板26,27の厚みは、強度を確保するために、リテーナ本体22を構成する前壁22Fや後壁22Bの厚みより大きくなっている(図4参照)。
The retainer 16 stores the airbag 14 in a folded state. As shown in FIGS. 2 and 3, the retainer 16 has a substantially square frame shape including a front wall 22F and a rear wall 22B corresponding to the vehicle front-rear direction, and a left wall 22L and a right wall 22R corresponding to the vehicle left-right direction. The retainer main body 22 and two hook plates 26 and 27 each having a plurality of hook-shaped hooks 24 provided at predetermined intervals in the extending direction. As shown in FIGS. 2 and 4, the hook plate 26 is fixed to the lower portion of the front wall 22 </ b> F of the retainer body 22. On the other hand, the hook plate 27 (locking plate) is fixed to the upper portion of the rear wall 22B of the retainer body 22. As shown in FIG. 1, the hooks 24 of the hook plates 26, 27 penetrate and engage with the engagement holes 32 provided in the leg portions 30 of the lid 28, so that the retainer 16 is attached to the lid 28. It is attached. For such engagement use, the thickness of the hook plates 26 and 27 is larger than the thicknesses of the front wall 22F and the rear wall 22B constituting the retainer body 22 in order to ensure strength (see FIG. 4). .
また図2及び図3に示すように、リテーナ本体22の後壁22Bと左壁22L及び右壁22Rとの角部には、それぞれ左右一対のスリット34が形成されている。また図3に示すように、後壁22Bにおけるスリット34同士の間には、車両左右方向(図3中左右方向)に所定の間隔をおいて、複数の貫通孔36が形成されている。これらの貫通孔36は、フック板27のフック24と車両左右方向位置が概ね一致するように、形成されている。
As shown in FIGS. 2 and 3, a pair of left and right slits 34 are formed at the corners of the rear wall 22B, the left wall 22L, and the right wall 22R of the retainer main body 22, respectively. As shown in FIG. 3, a plurality of through holes 36 are formed between the slits 34 in the rear wall 22B at a predetermined interval in the vehicle left-right direction (left-right direction in FIG. 3). These through holes 36 are formed so that the positions of the hook 24 of the hook plate 27 and the vehicle left-right direction substantially coincide.
またリテーナ16は、リテーナ本体22の車両左右方向の両側面(左面及び右面)にそれぞれサイドブラケット38を有している。このサイドブラケット38は、リテーナ本体22に固定されるリテーナ側固定部38aと、車両側に固定される車両側固定部38bとを備えている。リテーナ側固定部38aは、リテーナ本体22の左壁22L及び右壁22Rにそれぞれ溶接等により固定されている。一方、車両側固定部38bにはボルト孔38cが穿設されている。この車両側固定部38bは、ボルト・ナット等(図示省略)によりインパネ12内に配置された車両側の強度部材(図示省略)に固定される。
The retainer 16 has side brackets 38 on both side surfaces (left surface and right surface) of the retainer main body 22 in the left-right direction of the vehicle. The side bracket 38 includes a retainer side fixing portion 38a that is fixed to the retainer main body 22, and a vehicle side fixing portion 38b that is fixed to the vehicle side. The retainer side fixing portion 38a is fixed to the left wall 22L and the right wall 22R of the retainer body 22 by welding or the like. On the other hand, a bolt hole 38c is formed in the vehicle side fixing portion 38b. The vehicle side fixing portion 38b is fixed to a vehicle side strength member (not shown) disposed in the instrument panel 12 by bolts, nuts, and the like (not shown).
さらにリテーナ16は、リテーナ本体22の下方の左右両側にそれぞれロアブラケット40(支持部材)を有している。このロアブラケット40は、中間部が屈曲された帯状の板片であり、その両端にリテーナ本体22に固定されるリテーナ側固定部40a,40bを備え、中間部に車両側に固定される車両側固定部40cを備えている。リテーナ側固定部40aは、リテーナ本体22の後壁22Bに溶接等により固定されており、リテーナ側固定部40bは、リテーナ本体22の底部22Dに溶接等により固定されている。一方、車両側固定部40cには、ボルト孔40dが穿設されており、裏面側にこのボルト孔40dに対応してナット42(図2参照)が溶接等により設けられている。車両側のボルト(図示省略)が上記ボルト孔40dを貫通してナット42に締結することにより、車両側固定部40cはインパネ12内に配置された車両側の強度部材に固定される。なお、このような固定支持用途のため、ロアブラケット40の厚みは、強度を確保するために、リテーナ本体22を構成する後壁22Bや底部22Dの厚みより大きくなっている。
Furthermore, the retainer 16 has a lower bracket 40 (support member) on each of the left and right sides below the retainer body 22. The lower bracket 40 is a belt-like plate piece having an intermediate portion bent, and has retainer side fixing portions 40a and 40b fixed to the retainer main body 22 at both ends thereof, and the vehicle side fixed to the vehicle side at the intermediate portion. A fixing portion 40c is provided. The retainer side fixing portion 40a is fixed to the rear wall 22B of the retainer main body 22 by welding or the like, and the retainer side fixing portion 40b is fixed to the bottom portion 22D of the retainer main body 22 by welding or the like. On the other hand, a bolt hole 40d is formed in the vehicle-side fixing portion 40c, and a nut 42 (see FIG. 2) is provided on the back surface side by welding or the like corresponding to the bolt hole 40d. A vehicle-side bolt (not shown) passes through the bolt hole 40 d and is fastened to the nut 42, whereby the vehicle-side fixing portion 40 c is fixed to a vehicle-side strength member disposed in the instrument panel 12. In addition, for such a fixed support application, the thickness of the lower bracket 40 is larger than the thickness of the rear wall 22B and the bottom 22D constituting the retainer body 22 in order to ensure strength.
以上のようにして、サイドブラケット38及びロアブラケット40を車両側の強度部材に取り付けることにより、リテーナ16を強度部材に対して固定支持することができる。なお、図1(a)及び図1(b)では、サイドブラケット38及びロアブラケット40の図示を省略している。
As described above, the retainer 16 can be fixedly supported to the strength member by attaching the side bracket 38 and the lower bracket 40 to the strength member on the vehicle side. 1A and 1B, the side bracket 38 and the lower bracket 40 are not shown.
図4に示すように、インフレータ18は、リテーナ本体22の底部22Dに形成された開口部44(後述の図6も参照)に上部が嵌装されて取り付けられる。具体的には、インフレータ18は、その側周面に固定用のフランジ18aを有しており、このフランジ18aには複数のボルト孔(図示省略)が設けられている。また前述の押えリング20にも対応する箇所に複数のボルト孔(図示省略)が設けられている。さらに、リテーナ本体22の底部22Dの対応する箇所にも複数のボルト孔46(後述の図6参照)が設けられている。そして、ボルト48(図2及び図3参照)が、押えリング20のボルト孔、リテーナ本体22のボルト孔46及びインフレータ18のフランジ18aのボルト孔の順に挿通され、最終的にナット50(図2及び図3参照)に締結される。これにより、インフレータ18はリテーナ本体22の底部22Dに固定される。
As shown in FIG. 4, the inflator 18 is attached by fitting an upper portion into an opening 44 (see also FIG. 6 described later) formed in the bottom 22 </ b> D of the retainer main body 22. Specifically, the inflator 18 has a fixing flange 18a on its side peripheral surface, and a plurality of bolt holes (not shown) are provided in the flange 18a. A plurality of bolt holes (not shown) are provided at locations corresponding to the presser ring 20 described above. Further, a plurality of bolt holes 46 (see FIG. 6 described later) are also provided at corresponding portions of the bottom portion 22D of the retainer main body 22. Then, the bolt 48 (see FIGS. 2 and 3) is inserted in the order of the bolt hole of the retainer ring 20, the bolt hole 46 of the retainer main body 22, and the bolt hole of the flange 18a of the inflator 18, and finally the nut 50 (FIG. 2). And FIG. 3). As a result, the inflator 18 is fixed to the bottom 22D of the retainer body 22.
図1に示すように、リッド28は、上記パネル開口部21を塞ぐ蓋部52と、リテーナ16の前後方向を含む側方を覆う前述の脚部30とを備えている。蓋部52は、平常時には、図1(a)に示すようにパネル開口部21を閉塞し、インフレータ18の作動時には、図1(b)に示すようにエアバッグ14の膨張により開放される。また脚部30には、前述したようにフック板26,27の各フック24と対応する位置に、当該フック24を貫通させるための上記係合孔32がそれぞれ設けられている。
As shown in FIG. 1, the lid 28 includes a lid portion 52 that closes the panel opening portion 21 and the leg portion 30 that covers the side including the front-rear direction of the retainer 16. The cover portion 52 normally closes the panel opening 21 as shown in FIG. 1A, and is opened by inflation of the airbag 14 as shown in FIG. 1B when the inflator 18 is operated. Further, as described above, the leg 30 is provided with the engagement holes 32 through which the hooks 24 penetrate at positions corresponding to the hooks 24 of the hook plates 26 and 27, respectively.
このように構成された助手席用エアバッグ装置10にあっては、平常時においては、図1(a)に示すように、エアバッグ14は折り畳まれてリテーナ16の内部に収納されている。そして、車両の衝突時等には、インフレータ18が図示しない制御装置から制御信号を入力されて作動することにより、内部の発火剤が点火してガスを噴出し、これにより内圧が上昇して折り畳み状態であったエアバッグ14が膨張を開始する。そして、図1(b)に示すように、エアバッグ14は、その膨張力によりリッド28の蓋部52を開放させ、パネル開口部21より膨出して助手席Sに着座している乗員M側へ展開する。これにより、膨張展開したエアバッグ14が乗員Mの上半身を拘束する。
In the passenger airbag device 10 configured as described above, the airbag 14 is folded and stored in the retainer 16 in a normal state as shown in FIG. In the event of a vehicle collision or the like, the inflator 18 is actuated by receiving a control signal from a control device (not shown), so that the internal igniting agent is ignited and gas is ejected, whereby the internal pressure is raised and folded. The airbag 14 in the state starts to inflate. As shown in FIG. 1B, the airbag 14 opens the lid 52 of the lid 28 by its inflating force, bulges from the panel opening 21, and sits on the passenger seat S side. Expand to. Thereby, the inflated airbag 14 restrains the upper body of the occupant M.
一方、エアバッグ14の展開が不要な低速衝突時等には、インフレータ18が作動されないためにエアバッグ14が膨張しない。このため、図1(a)中矢印Xに示すように、乗員Mが衝突の反動によりその身体の一部、例えば頭部をインパネ12やリッド28における蓋部52の後方側にぶつけるおそれがある。本実施形態の助手席用エアバッグ装置10では、このような場合には、リテーナ本体22の後壁22Bが変形を生じ、ぶつかり時の衝撃を吸収する。以下、この詳細について説明する。
On the other hand, at the time of a low-speed collision that does not require the airbag 14 to be deployed, the inflator 18 is not actuated so that the airbag 14 does not expand. Therefore, as shown by an arrow X in FIG. 1A, the occupant M may hit a part of the body, for example, the head, on the rear side of the lid 52 in the instrument panel 12 or the lid 28 due to the reaction of the collision. . In such a case, in the passenger seat airbag device 10 of the present embodiment, the rear wall 22B of the retainer main body 22 is deformed and absorbs an impact at the time of collision. The details will be described below.
図5は、リテーナ16を乗員側である後方から見た後面図である。なお、この図5ではサイドブラケット38の図示を省略している。
FIG. 5 is a rear view of the retainer 16 as viewed from the rear, which is the passenger side. In FIG. 5, the side bracket 38 is not shown.
図5に示すように、リテーナ16が有するリテーナ本体22の後壁22Bの上部には、複数(この例では6本)のフック24を延在方向(図5中左右方向)に所定の間隔をおいて備えたフック板27が、この例では3箇所のスポット溶接54により固定されている。このフック板27は、その上端位置が後壁22Bの上端位置よりも上側となるように配置されている。フック24は、後壁22Bの上端位置よりも上側において後方側(図5中紙面手前側)に突出している。また、フック板27は、その下端位置が後壁22Bの左右に形成された一対のスリット34の上端位置と概ね一致する(詳細には若干上側である)ように配置されている。
As shown in FIG. 5, a plurality of (six in this example) hooks 24 are provided on the upper portion of the rear wall 22 </ b> B of the retainer body 22 of the retainer 16 at a predetermined interval in the extending direction (left and right direction in FIG. 5). The hook plate 27 provided in this embodiment is fixed by three spot welds 54 in this example. The hook plate 27 is disposed such that the upper end position is on the upper side of the upper end position of the rear wall 22B. The hook 24 protrudes to the rear side (the front side in FIG. 5) above the upper end position of the rear wall 22B. Further, the hook plate 27 is arranged so that the lower end position thereof substantially coincides with the upper end positions of the pair of slits 34 formed on the left and right sides of the rear wall 22B (in detail, slightly on the upper side).
これにより、後壁22Bにおける左右一対のスリット34同士の間の領域であるスリット間領域SA(図5中斜線部)と、後壁22Bにおけるフック板27が固定された領域であるフック板固定領域PA(係止板固定領域。図5中斜線部)とが、上下方向(図5中上下方向)において重ならないような配置構成となっている。すなわち、上記スリット間領域SAにおいては、左右一対のスリット34により後壁22Bの実板部分が少なくなる分剛性が低下するが、フック板固定領域PAにおいては、後壁22Bよりも厚みが大きなフック板27が固定されることにより剛性が増大するため、これらの領域を分離した構成とすることで、フック板固定領域PAにおける剛性増大の影響を受けることなく、スリット34による剛性低下機能を最大限に活かして、後壁22Bをスリット間領域SAで変形できる構成となっている。
As a result, an inter-slit area SA (shaded portion in FIG. 5) that is an area between the pair of left and right slits 34 on the rear wall 22B and a hook plate fixing area that is an area to which the hook plate 27 is fixed on the rear wall 22B. The arrangement configuration is such that PA (locking plate fixing region; hatched portion in FIG. 5) does not overlap in the vertical direction (vertical direction in FIG. 5). That is, in the inter-slit area SA, the rigidity is reduced by the fact that the real plate portion of the rear wall 22B is reduced by the pair of left and right slits 34. However, in the hook plate fixing area PA, the hook having a larger thickness than the rear wall 22B. Since the rigidity increases when the plate 27 is fixed, the configuration in which these areas are separated makes it possible to maximize the rigidity reduction function by the slit 34 without being affected by the increase in rigidity in the hook plate fixing area PA. Taking advantage of this, the rear wall 22B can be deformed in the inter-slit area SA.
また前述したように、後壁22Bの下部には、その左右両側にロアブラケット40のリテーナ側固定部40aが、この例ではスポット溶接54によりそれぞれ固定されている。このリテーナ側固定部40aの上端位置は、後壁22Bの左右に形成された一対のスリット34の下端位置よりもやや上側となるように配置されており、後壁22Bにおけるリテーナ側固定部40aが固定された領域であるブラケット固定領域BA(支持部材固定領域。図5中斜線部)と、上記スリット間領域SAとは、上下方向においてやや重なった配置構成となっている。
Also, as described above, the retainer side fixing portions 40a of the lower bracket 40 are fixed to the lower portion of the rear wall 22B on both the left and right sides by spot welding 54 in this example. The upper end position of the retainer side fixing portion 40a is arranged to be slightly above the lower end positions of the pair of slits 34 formed on the left and right sides of the rear wall 22B, and the retainer side fixing portion 40a on the rear wall 22B is The bracket fixing area BA (supporting member fixing area; hatched portion in FIG. 5), which is a fixed area, and the inter-slit area SA are arranged to slightly overlap in the vertical direction.
より詳細には、スリット34は、その両端が円弧状である長孔形状に形成されており、スリット34の幅方向中心位置C(以下「スリット中心位置C」と称する)が、スリット34の長手方向長さが最大となる上下方向位置となる。本実施形態では、このスリット中心位置Cが、後壁22Bにおける上記ブラケット固定領域BAと、フック板固定領域PAとの間の領域(図5中両矢印Zで示す上下範囲)に包含されるような配置構成となっている。すなわち、ブラケット固定領域BAにおいては、上述したフック板固定領域PAと同様に、後壁22Bよりも厚みが大きなリテーナ側固定部40aが固定されることにより剛性が増大する。そして、スリット中心位置Cは、スリットの長手方向長さが最大となる分、スリット34による後壁22Bの剛性低下機能が最大となる位置であることから、当該スリット中心位置Cを、剛性が増大する領域であるフック板固定領域PA及びブラケット固定領域BA以外の領域に位置させることで、両領域における剛性増大の影響を受けることなく、スリット34による剛性低下機能を最大限に活かした位置であるスリット中心位置C近傍において、後壁22Bを変形できる構成となっている。
More specifically, the slit 34 is formed in a long hole shape whose both ends are arcuate, and the center position C in the width direction of the slit 34 (hereinafter referred to as “slit center position C”) is the length of the slit 34. This is the vertical position where the direction length is maximum. In the present embodiment, the slit center position C is included in a region between the bracket fixing region BA and the hook plate fixing region PA in the rear wall 22B (up and down range indicated by a double arrow Z in FIG. 5). The arrangement is simple. That is, in the bracket fixing area BA, similarly to the hook plate fixing area PA described above, rigidity is increased by fixing the retainer side fixing portion 40a having a thickness larger than that of the rear wall 22B. Since the slit center position C is the position where the rigidity reduction function of the rear wall 22B by the slit 34 is maximized by the maximum length in the longitudinal direction of the slit, the slit center position C is increased in rigidity. By positioning in areas other than the hook plate fixing area PA and the bracket fixing area BA, which are areas to be used, the position where the rigidity reduction function by the slit 34 is utilized to the maximum without being affected by the increase in rigidity in both areas In the vicinity of the slit center position C, the rear wall 22B can be deformed.
また前述したように、後壁22Bにおけるスリット34同士の間には、車両左右方向(図5中左右方向)に所定の間隔をおいて複数(この例では6つ)の貫通孔36が形成されている。これらの貫通孔36は、全てが同じ形状且つ同じ高さに形成されており、その少なくとも一部(この例では下部)がスリット間領域SA内となるように形成されている。より詳細には、貫通孔36の車両左右方向(図5中左右方向)長さが最大となる上下方向位置が、スリット間領域SAに含まれるように形成されている。この例では、各貫通孔36は、両端が円弧状である上下方向に伸びた長孔形状に形成されており、その上下両端を除く胴部分の範囲が、車両左右方向長さが最大となる範囲(図5中両矢印Wで示す範囲。以下「孔幅最大範囲W」と称する)である。この孔幅最大範囲Wの下部がスリット間領域SAに含まれるような配置構成となっている。さらに、各貫通孔36の上下方向中心位置は、フック板27の下端位置と概ね一致するように構成されている。
As described above, a plurality (six in this example) of through-holes 36 are formed between the slits 34 in the rear wall 22B at a predetermined interval in the vehicle left-right direction (left-right direction in FIG. 5). ing. All of these through holes 36 are formed in the same shape and the same height, and at least a part thereof (the lower part in this example) is formed in the inter-slit region SA. More specifically, the vertical position where the length of the through hole 36 in the vehicle left-right direction (left-right direction in FIG. 5) is maximum is formed so as to be included in the inter-slit region SA. In this example, each through-hole 36 is formed in a long hole shape extending in the vertical direction with both ends being arcuate, and the range of the trunk portion excluding the upper and lower ends has the maximum vehicle left-right length. This is a range (a range indicated by a double-headed arrow W in FIG. 5. The arrangement is such that the lower portion of the maximum hole width range W is included in the inter-slit region SA. Furthermore, the vertical center position of each through hole 36 is configured to substantially coincide with the lower end position of the hook plate 27.
すなわち、貫通孔36の車両左右方向長さが最大となる孔幅最大範囲Wでは、貫通孔36の幅が最大となる分、貫通孔36による後壁22Bの剛性低下機能が最大となる。これにより、当該上下方向位置をスリット間領域SAに含ませることにより、後壁22Bの実板部分がスリット34に加えて貫通孔36の分だけさらに少なくなるため、スリット34による剛性低下機能に加えて、貫通孔36による剛性低下機能を相乗的に最大限に発揮させ、後壁22Bをスリット間領域SAで変形し易くできる構成となっている。
That is, in the hole width maximum range W in which the vehicle left-right direction length of the through hole 36 is maximum, the rigidity reduction function of the rear wall 22B by the through hole 36 is maximized by the maximum width of the through hole 36. As a result, by including the vertical position in the inter-slit region SA, the actual plate portion of the rear wall 22B is further reduced by the amount of the through hole 36 in addition to the slit 34. Thus, the rigidity reduction function by the through-hole 36 is synergistically maximized, and the rear wall 22B can be easily deformed in the inter-slit region SA.
図6は、上記構成であるリテーナ16が変形する様子を表す斜視図であり、図6(a)は後壁22Bが変形する前の状態、図6(b)は後壁22Bが変形した後の状態を示している。また図7は、後壁22Bの斜め前側から見た変形後のリテーナ16の斜視図である。なお、煩雑防止のため、図6においてはロアブラケット40の図示を省略し、図7においてはサイドブラケット38の図示を省略している。
6A and 6B are perspective views showing a state in which the retainer 16 having the above-described configuration is deformed. FIG. 6A is a state before the rear wall 22B is deformed, and FIG. 6B is a state after the rear wall 22B is deformed. Shows the state. FIG. 7 is a perspective view of the retainer 16 after deformation as viewed from the oblique front side of the rear wall 22B. In order to prevent complication, the lower bracket 40 is not shown in FIG. 6, and the side bracket 38 is not shown in FIG.
図6(a)に示すように、リテーナ16におけるリテーナ本体22の後壁22Bは、通常は真っ直ぐな平板状となっている。一方、低速衝突時等に、乗員Mが衝突の反動により頭部等をインパネ12やリッド28の蓋部52の後方側にぶつけた場合には、その衝撃がインパネ12や蓋部52を介してリテーナ本体22の後壁22Bに伝わる。その結果、図6(b)に示すように、後壁22Bがフック板27と共にリテーナ本体22の外部方向(車両後方側、すなわち乗員側)に屈曲するように変形を生じ、ぶつかり時の衝撃を吸収する。
As shown in FIG. 6 (a), the rear wall 22B of the retainer body 22 in the retainer 16 is usually a straight flat plate. On the other hand, when the occupant M hits the rear side of the lid 52 of the instrument panel 12 or the lid 28 due to the reaction of the collision during a low-speed collision or the like, the impact is caused through the instrument panel 12 or the lid 52. It is transmitted to the rear wall 22B of the retainer main body 22. As a result, as shown in FIG. 6B, the rear wall 22B is deformed so as to bend together with the hook plate 27 toward the outside of the retainer main body 22 (the vehicle rear side, that is, the occupant side). Absorb.
図7に示すように、後壁22Bは、スリット間領域SA内におけるスリット中心位置Cより上側の領域において屈曲する。特に、貫通孔36の車両左右方向長さが最大となる範囲である前述の孔幅最大範囲Wの下端Wd付近において、最も大きく変形する。これは、前述したように、この下端Wdの位置では、貫通孔36の幅が最大であることから複数の貫通孔36による後壁22Bの剛性低下機能が最大となる上に、スリット間領域SA内であることから左右一対のスリット34による剛性低下機能も相乗的に加わり、後壁22Bが最も変形し易くなるからである。
As shown in FIG. 7, the rear wall 22B bends in a region above the slit center position C in the inter-slit region SA. In particular, the deformation is the largest in the vicinity of the lower end Wd of the aforementioned maximum hole width range W, which is the range in which the vehicle lateral length of the through hole 36 is maximum. As described above, since the width of the through hole 36 is the maximum at the position of the lower end Wd, the function of lowering the rigidity of the rear wall 22B by the plurality of through holes 36 is maximized, and the inter-slit region SA. This is because the rigidity reduction function by the pair of left and right slits 34 is synergistically added and the rear wall 22B is most easily deformed.
以上説明した実施形態によれば、以下の効果を得ることができる。すなわち、本実施形態の助手席用エアバッグ装置10においては、エアバッグ14の展開不要な低速衝突時等に、乗員Mが頭部等をインパネ12やリッド28の蓋部52にぶつけた場合に、リテーナ本体22の後壁22Bが、当該後壁22Bと左壁22L及び右壁22Rとの角部にそれぞれ形成された左右一対のスリット34同士の間のスリット間領域SAにおいて屈曲による変形を生じ、これによりぶつかり時の衝撃を吸収する。このとき、リテーナ本体22の後壁22Bにおけるスリット間領域SAと、後壁22Bにおけるフック板27が固定された領域であるフック板固定領域PAとが、上下方向において重ならないようにリテーナ16が構成されている。これにより、フック板固定領域PAにおける剛性増大の影響を受けることなく、スリット34による剛性低下機能を最大限に活かして、後壁22Bをスリット間領域SAで変形させることができる。その結果、リテーナ16が衝撃吸収機能を十分に発揮できるので、衝撃吸収機能を向上できる。
According to the embodiment described above, the following effects can be obtained. That is, in the passenger seat airbag device 10 of the present embodiment, when the occupant M hits the instrument panel 12 or the lid portion 52 of the lid 28 at the time of a low-speed collision where the airbag 14 is not required to be deployed. The rear wall 22B of the retainer body 22 is deformed by bending in the inter-slit area SA between the pair of left and right slits 34 formed at the corners of the rear wall 22B, the left wall 22L, and the right wall 22R. This absorbs the impact of the collision. At this time, the retainer 16 is configured so that the inter-slit area SA on the rear wall 22B of the retainer body 22 and the hook plate fixing area PA, which is the area where the hook plate 27 is fixed on the rear wall 22B, do not overlap in the vertical direction. Has been. As a result, the rear wall 22B can be deformed in the inter-slit area SA by making the most of the rigidity reduction function by the slit 34 without being affected by the increase in rigidity in the hook plate fixing area PA. As a result, the retainer 16 can sufficiently exhibit the shock absorbing function, so that the shock absorbing function can be improved.
また、本実施形態では特に、スリット34の上端位置とフック板27の下端位置とが概ね一致するように、言い換えれば、スリット間領域SAの上端とフック板固定領域PAの下端とが概ね一致するように、リテーナ本体22にスリット34が形成されると共に、後壁22Bにフック板27が固定される。これにより、スリット間領域SAとフック板固定領域PAとが上下方向において互いに重ならないようにしつつ、リテーナ本体22の上下方向長さを必要最小限とすることができる。その結果、リテーナ16の小型化を図ることができる。
In the present embodiment, in particular, the upper end position of the slit 34 and the lower end position of the hook plate 27 are substantially coincident, in other words, the upper end of the inter-slit area SA and the lower end of the hook plate fixing area PA are substantially coincident. Thus, the slit 34 is formed in the retainer main body 22 and the hook plate 27 is fixed to the rear wall 22B. Accordingly, the length of the retainer body 22 in the vertical direction can be minimized while preventing the inter-slit area SA and the hook plate fixing area PA from overlapping each other in the vertical direction. As a result, the retainer 16 can be reduced in size.
また、本実施形態では特に、スリット34の長手方向長さが最大となるスリット中心位置Cが、ブラケット固定領域BAとフック板固定領域PAとの間の領域に包含されるような構成とする。すなわち、このスリット中心位置Cは、スリット34により後壁22Bの実板部分が最も少なくなる位置であり、スリット34による剛性低下機能が最大となる位置である。したがって、このスリット中心位置Cを、剛性が増大する領域であるフック板固定領域PA及びブラケット固定領域BA以外の領域に位置させることで、両領域PA,BAにおける剛性増大の影響を受けることなく、スリット34による剛性低下機能を最大限に活かした位置であるスリット中心位置C近傍において、後壁22Bを変形させることができる。
In the present embodiment, the slit center position C where the length in the longitudinal direction of the slit 34 is maximum is included in the region between the bracket fixing region BA and the hook plate fixing region PA. That is, the slit center position C is a position where the actual plate portion of the rear wall 22B is minimized by the slit 34, and is a position where the rigidity reduction function by the slit 34 is maximized. Therefore, by positioning the slit center position C in an area other than the hook plate fixing area PA and the bracket fixing area BA, which are areas where the rigidity is increased, without being affected by the increase in rigidity in both areas PA and BA, The rear wall 22B can be deformed in the vicinity of the slit center position C, which is a position where the rigidity reduction function by the slit 34 is fully utilized.
また、本実施形態では特に、リテーナ本体22の後壁22Bに、車両左右方向に所定の間隔をおいて複数の貫通孔36が形成されており、これらの貫通孔36は、その少なくとも一部がスリット間領域SA内となるように形成されている。これにより、スリット間領域SA内における貫通孔36が形成された上下方向位置においては、後壁22Bの実板部分がスリット34に加えて貫通孔36の分だけさらに少なくなるため、スリット34による剛性低下機能に加えてさらに貫通孔36による剛性低下機能を相乗的に発揮させることができる。したがって、リテーナ16の衝撃吸収機能をさらに向上できる。
In the present embodiment, in particular, a plurality of through holes 36 are formed in the rear wall 22B of the retainer body 22 at predetermined intervals in the left-right direction of the vehicle, and at least a part of these through holes 36 is formed. It is formed so as to be in the inter-slit area SA. As a result, at the vertical position where the through hole 36 is formed in the inter-slit region SA, the actual plate portion of the rear wall 22B is further reduced by the amount of the through hole 36 in addition to the slit 34, so that the rigidity by the slit 34 is increased. In addition to the lowering function, the rigidity lowering function by the through hole 36 can be exhibited synergistically. Therefore, the shock absorbing function of the retainer 16 can be further improved.
また、本実施形態では特に、貫通孔36の車両左右方向長さが最大となる孔幅最大範囲Wがスリット間領域SAに含まれるように、同じ高さで貫通孔36を形成する。すなわち、この孔幅最大範囲Wでは、複数の貫通孔36により後壁22Bの実板部分が最も少なくなる位置であり、貫通孔36による剛性低下機能が最大となる位置である。したがって、貫通孔36による剛性低下機能が最大となる上下方向位置を、スリット間領域SA内に位置させることができるので、貫通孔36による剛性低下機能を最大限に活かして、後壁22Bをスリット間領域SAで変形させることができる。
In the present embodiment, in particular, the through hole 36 is formed at the same height so that the hole width maximum range W in which the vehicle lateral length of the through hole 36 is maximum is included in the inter-slit region SA. That is, in the maximum hole width range W, the plurality of through holes 36 are positions where the actual plate portion of the rear wall 22B is minimized, and the rigidity reduction function due to the through holes 36 is the maximum. Accordingly, since the vertical position where the rigidity reduction function by the through hole 36 is maximized can be positioned in the inter-slit region SA, the rigidity reduction function by the through hole 36 is utilized to the maximum, and the rear wall 22B is slit. It can be deformed in the inter-region SA.
また、本実施形態では特に、貫通孔36の上下方向中心位置がフック板27の下端位置と概ね一致する構成とする。すなわち、本実施形態のように貫通孔36を上下方向に伸びた長孔形状に形成した場合、その上下方向中心位置では貫通孔36の左右方向長さが確実に最大となる。したがって、上記構成とすることで、剛性の高いフック板27の下端位置を貫通孔36により剛性が最大限に低下された位置に合わせ、剛性の高いフック板27の突っ張り作用を利用してその下端位置近傍での後壁22Bの変形を促進できる。
Further, in the present embodiment, in particular, the vertical center position of the through hole 36 is generally coincident with the lower end position of the hook plate 27. That is, when the through hole 36 is formed in the shape of a long hole extending in the vertical direction as in this embodiment, the horizontal length of the through hole 36 is surely maximized at the center position in the vertical direction. Therefore, by adopting the above-described configuration, the lower end position of the highly rigid hook plate 27 is aligned with the position where the rigidity is reduced to the maximum by the through hole 36, and the lower end of the hook plate 27 having high rigidity is utilized by utilizing the tensioning action of the highly rigid hook plate 27. The deformation of the rear wall 22B in the vicinity of the position can be promoted.
また、本実施形態では特に、リテーナ本体22の後壁22Bに、フック板27のフック24と車両左右方向位置がそれぞれ概ね一致するように、各貫通孔36が形成されている。これにより、以下の効果を得ることができる。すなわち、本実施形態のようにフック板27をリテーナ本体22の後壁22Bに対しスポット溶接により固定する場合、フック板27のフック24部分においては当該フック24が邪魔となり溶接作業ができないことから、隣り合うフック24間の隙間において溶接が行われる。そして、上記構成とすることにより、フック板27における隣り合うフック24間の隙間は、後壁22Bにおける隣り合う貫通孔36間の実板部分に対応することになる。その結果、当該フック24間の隙間においてスポット溶接を行うことで、フック板27を後壁22Bに対し確実に固定できる。また、フック板27を後壁22Bに固定する際の溶接作業性を向上できる。
Further, in the present embodiment, in particular, each through hole 36 is formed in the rear wall 22B of the retainer body 22 so that the hook 24 of the hook plate 27 and the vehicle left-right position substantially coincide with each other. Thereby, the following effects can be acquired. That is, when the hook plate 27 is fixed to the rear wall 22B of the retainer main body 22 by spot welding as in the present embodiment, the hook 24 becomes an obstacle in the hook 24 portion of the hook plate 27, and welding work cannot be performed. Welding is performed in a gap between adjacent hooks 24. And by setting it as the said structure, the clearance gap between the adjacent hooks 24 in the hook board 27 respond | corresponds to the real board part between the adjacent through-holes 36 in the rear wall 22B. As a result, the hook plate 27 can be reliably fixed to the rear wall 22B by spot welding in the gap between the hooks 24. Further, the welding workability when fixing the hook plate 27 to the rear wall 22B can be improved.
なお、本発明は、上記実施形態に限られるものではなく、その趣旨及び技術的思想を逸脱しない範囲内で種々の変形が可能である。以下、そのような変形例を順を追って説明する。
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof. Hereinafter, such modifications will be described in order.
(1)スリット間領域SAとブラケット固定領域BAとが重ならない構成
上記実施形態では、スリット間領域SAとブラケット固定領域BAとが上下方向においてやや重なった配置構成としたが、これらが重ならないような構成としてもよい。 (1) Configuration in which the inter-slit area SA and the bracket fixing area BA do not overlap In the above embodiment, the inter-slit area SA and the bracket fixing area BA are slightly overlapped in the vertical direction. It is good also as a simple structure.
上記実施形態では、スリット間領域SAとブラケット固定領域BAとが上下方向においてやや重なった配置構成としたが、これらが重ならないような構成としてもよい。 (1) Configuration in which the inter-slit area SA and the bracket fixing area BA do not overlap In the above embodiment, the inter-slit area SA and the bracket fixing area BA are slightly overlapped in the vertical direction. It is good also as a simple structure.
図8は、このような変形例であるリテーナ16Aの後面図である。なお、この図8ではサイドブラケット38の図示を省略している。図8に示すように、本変形例のリテーナ16Aでは、ロアブラケット40のリテーナ側固定部40aの上端位置が、スリット34の下端位置よりもやや下側となるように配置されており、ブラケット固定領域BAとスリット間領域SAとは、上下方向において重ならない配置構成となっている。言い換えれば、スリット間領域SAが、ブラケット固定領域BAとフック板固定領域PAとの間の領域に上下方向において包含された構成となっている。
FIG. 8 is a rear view of the retainer 16A which is such a modification. In FIG. 8, illustration of the side bracket 38 is omitted. As shown in FIG. 8, in the retainer 16 </ b> A of the present modified example, the upper end position of the retainer side fixing portion 40 a of the lower bracket 40 is arranged so as to be slightly below the lower end position of the slit 34. The area BA and the inter-slit area SA are arranged so as not to overlap in the vertical direction. In other words, the inter-slit area SA is included in the vertical direction in the area between the bracket fixing area BA and the hook plate fixing area PA.
これにより、スリット間領域SAを、剛性が増大する領域であるフック板固定領域PA及びブラケット固定領域BA以外の領域に位置させることができる。その結果、リテーナ16Aをロアブラケット40により車両の強度部材に支持固定する構造としつつ、上記両領域PA,BAにおける剛性増大の影響を受けることなく、後壁22Bをスリット間領域SAで変形させることができる。
Thereby, the inter-slit area SA can be positioned in an area other than the hook plate fixing area PA and the bracket fixing area BA, which are areas where the rigidity is increased. As a result, the rear wall 22B is deformed in the inter-slit area SA without being affected by the increase in rigidity in both the areas PA and BA, while the retainer 16A is supported and fixed to the strength member of the vehicle by the lower bracket 40. Can do.
(2)スリット中心位置Cと孔幅最大範囲Wとが一致する構成
上記実施形態では、スリット34の幅方向中心位置であるスリット中心位置Cが、貫通孔36の車両左右方向長さが最大となる範囲である孔幅最大範囲Wに含まれず、貫通孔36の車両左右方向長さが最大となる上下方向位置と、スリット34の長手方向長さが最大となる上下方向位置とが一致しない構成であったが、これらの位置が一致する構成としてもよい。 (2) Configuration in which slit center position C and hole width maximum range W coincide with each other In the above-described embodiment, slit center position C, which is the center position in the width direction ofslit 34, has the maximum vehicle left-right direction length of through hole 36. The vertical position at which the vehicle lateral length of the through hole 36 is maximized and the vertical position at which the longitudinal length of the slit 34 is maximized are not included in the maximum hole width range W that is the range. However, a configuration in which these positions coincide may be adopted.
上記実施形態では、スリット34の幅方向中心位置であるスリット中心位置Cが、貫通孔36の車両左右方向長さが最大となる範囲である孔幅最大範囲Wに含まれず、貫通孔36の車両左右方向長さが最大となる上下方向位置と、スリット34の長手方向長さが最大となる上下方向位置とが一致しない構成であったが、これらの位置が一致する構成としてもよい。 (2) Configuration in which slit center position C and hole width maximum range W coincide with each other In the above-described embodiment, slit center position C, which is the center position in the width direction of
図9は、このような変形例であるリテーナ16Bの後面図である。なお、この図9ではサイドブラケット38の図示を省略している。図9に示すように、本変形例のリテーナ16Bでは、前述の実施形態よりも貫通孔36が上下方向に長く形成されており、貫通孔36の車両左右方向(図9中左右方向)長さが最大となる範囲である孔幅最大範囲Wの下端位置が、スリット34の幅方向(図9中上下方向)中心位置であるスリット中心位置Cと概ね一致している。すなわち、貫通孔36の車両左右方向長さが最大となる上下方向位置と、スリット34の長手方向長さが最大となる上下方向位置とが一致した構成となっている。
FIG. 9 is a rear view of the retainer 16B which is such a modification. In FIG. 9, the side bracket 38 is not shown. As shown in FIG. 9, in the retainer 16B of this modified example, the through hole 36 is formed longer in the vertical direction than in the above-described embodiment, and the length of the through hole 36 in the vehicle left-right direction (left-right direction in FIG. 9). The lower end position of the maximum hole width range W, which is the range in which is maximum, generally coincides with the slit center position C, which is the center position of the slit 34 in the width direction (vertical direction in FIG. 9). That is, the vertical position where the vehicle left-right direction length of the through hole 36 is maximum coincides with the vertical position where the longitudinal length of the slit 34 is maximum.
これにより、当該スリット中心位置Cでは、後壁22Bの実板部分が最も少なくなるため、後壁22Bの剛性を最も低下させることができる。したがって、フック板固定領域PA及びブラケット固定領域BAにおける剛性増大の影響を受けることなく、スリット34及び貫通孔36により剛性が最小となる上下方向位置において、後壁22Bをピンポイントに変形させることができる。
Thereby, at the slit center position C, the solid plate portion of the rear wall 22B becomes the smallest, so that the rigidity of the rear wall 22B can be reduced most. Therefore, the rear wall 22B can be deformed to the pin point at the vertical position where the rigidity is minimized by the slit 34 and the through hole 36 without being affected by the rigidity increase in the hook plate fixing area PA and the bracket fixing area BA. it can.
(3)その他
以上においては、後壁22Bとフック板27及びリテーナ側固定部40aとをスポット溶接54により固定するようにしたが、これに限らず、例えばボルト・ナット等の固定具を用いて固定してもよい。また、前壁22Fとフック板26との固定や、底部22Dとロアブラケット40のリテーナ側固定部40bとの固定、左・右壁22L,22Rとサイドブラケット38のリテーナ側固定部38aとの固定についても同様である。 (3) Others In the above description, therear wall 22B, the hook plate 27, and the retainer side fixing portion 40a are fixed by spot welding 54. However, the present invention is not limited to this. It may be fixed. Further, the front wall 22F and the hook plate 26 are fixed, the bottom 22D and the lower bracket 40 are fixed to the retainer side fixing portion 40b, and the left and right walls 22L and 22R and the side bracket 38 are fixed to the retainer side fixing portion 38a. The same applies to.
以上においては、後壁22Bとフック板27及びリテーナ側固定部40aとをスポット溶接54により固定するようにしたが、これに限らず、例えばボルト・ナット等の固定具を用いて固定してもよい。また、前壁22Fとフック板26との固定や、底部22Dとロアブラケット40のリテーナ側固定部40bとの固定、左・右壁22L,22Rとサイドブラケット38のリテーナ側固定部38aとの固定についても同様である。 (3) Others In the above description, the
また以上においては、スリット34や貫通孔36の形状を長孔状としたが、これに限らず、矩形状でもよいし、円形状や楕円形状でもよい。また、スリット34や貫通孔36の端部の形状を円弧状ではなく三角形状としてもよい。
In the above description, the slits 34 and the through holes 36 have long holes. However, the shape is not limited to this, and may be rectangular, circular, or elliptical. Further, the shape of the end portion of the slit 34 or the through hole 36 may be a triangular shape instead of an arc shape.
また以上においては、本発明を円盤型のインフレータ(いわゆるディスク型)を用いた助手席用エアバッグ装置に適用した場合を一例として説明したが、円筒状のインフレータ(いわゆるシリンダ型)を用いたエアバッグ装置にも適用可能である。
In the above description, the case where the present invention is applied to a passenger airbag device using a disk-type inflator (so-called disc type) has been described as an example. However, an air using a cylindrical inflator (so-called cylinder type) is described. The present invention can also be applied to a bag device.
また、以上既に述べた以外にも、上記実施形態や各変形例による手法を適宜組み合わせて利用しても良い。その他、一々例示はしないが、本発明は、その趣旨を逸脱しない範囲内において、種々の変更が加えられて実施されるものである。
In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination. In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.
10 助手席用エアバッグ装置
12 インストルメントパネル
14 エアバッグ
16 リテーナ
16A リテーナ
16B リテーナ
18 インフレータ
21 開口部
22 リテーナ本体
22B 後壁
22F 前壁
22L 左壁
22R 右壁
22D 底部
24 フック
27 フック板(係止板)
28 リッド
32 係合孔
34 スリット
36 貫通孔
40 ロアブラケット(支持部材)
40a リテーナ側固定部
40c 車両側固定部
BA ブラケット固定領域(支持部材固定領域)
C スリット中心位置(上下方向位置)
PA フック板固定領域(係止板固定領域)
SA スリット間領域 10 Airbag Device forPassenger Seat 12 Instrument Panel 14 Airbag 16 Retainer 16A Retainer 16B Retainer 18 Inflator 21 Opening 22 Retainer Main Body 22B Rear Wall 22F Front Wall 22L Left Wall 22R Right Wall 22D Bottom 24 Hook 27 (Locking) Board)
28Lid 32 Engagement hole 34 Slit 36 Through hole 40 Lower bracket (support member)
40a Retainerside fixing part 40c Vehicle side fixing part BA Bracket fixing area (supporting member fixing area)
C Slit center position (vertical direction position)
PA hook plate fixing area (locking plate fixing area)
SA area between slits
12 インストルメントパネル
14 エアバッグ
16 リテーナ
16A リテーナ
16B リテーナ
18 インフレータ
21 開口部
22 リテーナ本体
22B 後壁
22F 前壁
22L 左壁
22R 右壁
22D 底部
24 フック
27 フック板(係止板)
28 リッド
32 係合孔
34 スリット
36 貫通孔
40 ロアブラケット(支持部材)
40a リテーナ側固定部
40c 車両側固定部
BA ブラケット固定領域(支持部材固定領域)
C スリット中心位置(上下方向位置)
PA フック板固定領域(係止板固定領域)
SA スリット間領域 10 Airbag Device for
28
40a Retainer
C Slit center position (vertical direction position)
PA hook plate fixing area (locking plate fixing area)
SA area between slits
Claims (9)
- 車両の内壁を構成するインストルメントパネル(12)に設けられた開口部(21)から膨張展開するエアバッグ(14)と、
折り畳まれた前記エアバッグ(14)を収納するリテーナ(16;16A;16B)と、
前記リテーナ(16;16A;16B)の底部(22D)に取り付けられ、前記エアバッグ(14)にガスを供給するインフレータ(18)と、を有する助手席用エアバッグ装置(10)であって、
前記リテーナ(16;16A;16B)は、
車両前後方向に対応する前壁(22F)及び後壁(22B)、並びに車両左右方向に対応する左壁(22L)及び右壁(22R)を備えた略四角枠形状のリテーナ本体(22)と、
前記リテーナ本体(22)の前記後壁(22B)と前記左壁(22L)及び右壁(22R)との角部にそれぞれ形成された左右一対のスリット(34)と、
前記開口部(21)を塞ぐリッド(28)に設けた係合孔(32)に係合可能な複数の鉤状のフック(24)を延在方向に所定の間隔をおいて備え、前記リテーナ本体(22)の前記後壁(22B)に固定された係止板(27)と、を有し、
前記後壁(22B)における前記左右一対のスリット(34)同士の間の領域であるスリット間領域(SA)と、前記後壁(22B)における前記係止板(27)が固定された領域である係止板固定領域(PA)とが、重ならないように構成されている
ことを特徴とする助手席用エアバッグ装置(10)。 An airbag (14) that inflates and deploys from an opening (21) provided in an instrument panel (12) that constitutes an inner wall of the vehicle;
A retainer (16; 16A; 16B) for accommodating the folded airbag (14);
An airbag device (10) for a passenger's seat having an inflator (18) attached to a bottom portion (22D) of the retainer (16; 16A; 16B) and supplying gas to the airbag (14),
The retainer (16; 16A; 16B)
A substantially rectangular frame-shaped retainer body (22) having a front wall (22F) and a rear wall (22B) corresponding to the vehicle front-rear direction, and a left wall (22L) and a right wall (22R) corresponding to the vehicle left-right direction; ,
A pair of left and right slits (34) respectively formed at corners of the rear wall (22B), the left wall (22L) and the right wall (22R) of the retainer body (22);
A plurality of hook-shaped hooks (24) that can be engaged with engagement holes (32) provided in a lid (28) that closes the opening (21) at predetermined intervals in the extending direction; A locking plate (27) fixed to the rear wall (22B) of the main body (22),
An area between the slit (34) between the pair of left and right slits (34) on the rear wall (22B) and an area where the locking plate (27) on the rear wall (22B) is fixed. An airbag device (10) for a passenger's seat, which is configured so as not to overlap with a certain locking plate fixing area (PA). - 請求項1記載の助手席用エアバッグ装置において、
前記リテーナ(16;16A;16B)は、
前記スリット間領域(SA)の上端と、前記係止板固定領域(PA)の下端とが、概ね一致するように構成されている
ことを特徴とする助手席用エアバッグ装置(10)。 The airbag device for a passenger seat according to claim 1,
The retainer (16; 16A; 16B)
An airbag device (10) for a passenger seat, wherein an upper end of the inter-slit region (SA) and a lower end of the locking plate fixing region (PA) are configured to substantially coincide with each other. - 請求項1又は請求項2記載の助手席用エアバッグ装置において、
前記リテーナ(16;16A;16B)は、
前記後壁(22B)の下側に固定されたリテーナ側固定部(40a)と、前記車両の強度部材に固定される車両側固定部(40c)とを備えた、前記リテーナ(16;16A;16B)を前記強度部材に対して固定支持する支持部材(40)を有しており、
前記スリット(34)は、
当該スリット(34)の長手方向長さが最大となる上下方向位置(C)が、前記後壁(22B)における前記リテーナ側固定部(40a)が固定された領域である支持部材固定領域(BA)と、前記係止板固定領域(PA)との間の領域に包含されるように、形成されている
ことを特徴とする助手席用エアバッグ装置(10)。 In the passenger seat airbag device according to claim 1 or 2,
The retainer (16; 16A; 16B)
The retainer (16; 16A) comprising a retainer side fixing portion (40a) fixed to the lower side of the rear wall (22B) and a vehicle side fixing portion (40c) fixed to the strength member of the vehicle. 16B) having a support member (40) for fixing and supporting the strength member,
The slit (34)
The support member fixing region (BA) in which the vertical position (C) where the longitudinal length of the slit (34) is maximum is a region where the retainer side fixing portion (40a) in the rear wall (22B) is fixed. ) And the locking plate fixing region (PA). The passenger seat airbag device (10) is formed so as to be included in the region. - 請求項1又は請求項2記載の助手席用エアバッグ装置において、
前記リテーナ(16A)は、
前記後壁(22B)の下側に固定されたリテーナ側固定部(40a)と、前記車両の強度部材に固定される車両側固定部(40c)とを備えた、前記リテーナ(16A)を前記強度部材に対して固定支持する支持部材(40)を有しており、
前記スリット間領域(SA)は、
前記後壁(22B)における前記リテーナ側固定部(40a)が固定された領域である支持部材固定領域(BA)と、前記係止板固定領域(PA)との間の領域に、上下方向において包含されている
ことを特徴とする助手席用エアバッグ装置(10)。 In the passenger seat airbag device according to claim 1 or 2,
The retainer (16A)
The retainer (16A) is provided with a retainer side fixing portion (40a) fixed to the lower side of the rear wall (22B) and a vehicle side fixing portion (40c) fixed to the strength member of the vehicle. A support member (40) fixedly supported with respect to the strength member;
The inter-slit area (SA) is
In a region between the support member fixing region (BA) which is a region where the retainer side fixing portion (40a) is fixed in the rear wall (22B) and the locking plate fixing region (PA), in the vertical direction A passenger-side airbag device (10), characterized in that it is included. - 請求項1乃至請求項4のいずれか1項記載の助手席用エアバッグ装置において、
前記リテーナ(16;16A;16B)は、
前記リテーナ本体(22)の前記後壁(22B)に前記車両左右方向に所定の間隔をおいて形成された複数の貫通孔(36)を有しており、
前記貫通孔(36)は、
少なくとも一部が前記スリット間領域(SA)内となるように形成されている
ことを特徴とする助手席用エアバッグ装置(10)。 The airbag device for a passenger seat according to any one of claims 1 to 4,
The retainer (16; 16A; 16B)
The retainer body (22) has a plurality of through holes (36) formed in the rear wall (22B) of the retainer body (22) at predetermined intervals in the vehicle left-right direction;
The through hole (36)
An airbag device (10) for a passenger seat, wherein at least a part is formed so as to be in the region between the slits (SA). - 請求項5記載の助手席用エアバッグ装置において、
前記複数の貫通孔(36)は、
上下方向位置が等しくなるように形成され、且つ、
当該貫通孔(36)の前記車両左右方向長さが最大となる上下方向位置が、前記スリット間領域(SA)に含まれるように、形成されている
ことを特徴とする助手席用エアバッグ装置(10)。 In the passenger airbag device according to claim 5,
The plurality of through holes (36) are:
It is formed so that the vertical position is equal, and
An airbag device for a passenger seat, characterized in that the vertical position at which the vehicle lateral length of the through hole (36) is maximum is included in the inter-slit region (SA). (10). - 請求項6記載の助手席用エアバッグ装置において、
前記貫通孔(36)は、
当該貫通孔(36)の前記車両左右方向長さが最大となる上下方向位置が、前記スリット(34)の長手方向長さが最大となる上下方向位置(C)と概ね一致するように、形成されている
ことを特徴とする助手席用エアバッグ装置(10)。 The passenger airbag device according to claim 6,
The through hole (36)
Formed so that the vertical position at which the vehicle lateral length of the through hole (36) is maximum coincides with the vertical position (C) at which the longitudinal length of the slit (34) is maximum. An airbag device for a passenger seat (10), wherein - 請求項5記載の助手席用エアバッグ装置において、
前記貫通孔(36)は、
上下方向に伸びた長孔形状を有しており、
その上下方向中心位置が、前記係止板(27)の下端位置と概ね一致するように、形成されている
ことを特徴とする助手席用エアバッグ装置(10)。 In the passenger airbag device according to claim 5,
The through hole (36)
It has a long hole shape extending in the vertical direction,
The passenger seat airbag device (10) is characterized in that its vertical center position is formed so as to substantially coincide with the lower end position of the locking plate (27). - 請求項5記載の助手席用エアバッグ装置において、
前記貫通孔(36)は、
前記係止板(27)のフック(24)と前記車両左右方向位置が概ね一致するように、形成されている
ことを特徴とする助手席用エアバッグ装置(10)。 In the passenger airbag device according to claim 5,
The through hole (36)
The passenger seat airbag device (10) is characterized in that the hook (24) of the locking plate (27) and the vehicle left-right direction position substantially coincide with each other.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009266050A JP5431129B2 (en) | 2009-11-24 | 2009-11-24 | Airbag device for passenger seat |
JP2009-266050 | 2009-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011065128A1 true WO2011065128A1 (en) | 2011-06-03 |
Family
ID=44066233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/067669 WO2011065128A1 (en) | 2009-11-24 | 2010-10-07 | Airbag device for front passenger seat |
Country Status (2)
Country | Link |
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JP (1) | JP5431129B2 (en) |
WO (1) | WO2011065128A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109624875A (en) * | 2017-09-11 | 2019-04-16 | 弗吉亚内饰工业 | Modified elements including deformable outer surface |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0655987A (en) * | 1992-08-07 | 1994-03-01 | Kansei Corp | Air bag fitting device |
JPH11189120A (en) * | 1997-12-25 | 1999-07-13 | Denso Corp | Vehicular air bag device for front passanger seat and casing therefor |
JPH11291854A (en) * | 1998-04-10 | 1999-10-26 | Kansei Corp | Air bag device |
JP2001270410A (en) * | 2000-03-28 | 2001-10-02 | Toyoda Gosei Co Ltd | Air bag device for front passenger seat |
JP2006290017A (en) * | 2005-04-06 | 2006-10-26 | Calsonic Kansei Corp | Shock absorbing structure of air bag module |
-
2009
- 2009-11-24 JP JP2009266050A patent/JP5431129B2/en not_active Expired - Fee Related
-
2010
- 2010-10-07 WO PCT/JP2010/067669 patent/WO2011065128A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0655987A (en) * | 1992-08-07 | 1994-03-01 | Kansei Corp | Air bag fitting device |
JPH11189120A (en) * | 1997-12-25 | 1999-07-13 | Denso Corp | Vehicular air bag device for front passanger seat and casing therefor |
JPH11291854A (en) * | 1998-04-10 | 1999-10-26 | Kansei Corp | Air bag device |
JP2001270410A (en) * | 2000-03-28 | 2001-10-02 | Toyoda Gosei Co Ltd | Air bag device for front passenger seat |
JP2006290017A (en) * | 2005-04-06 | 2006-10-26 | Calsonic Kansei Corp | Shock absorbing structure of air bag module |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109624875A (en) * | 2017-09-11 | 2019-04-16 | 弗吉亚内饰工业 | Modified elements including deformable outer surface |
CN109624875B (en) * | 2017-09-11 | 2023-04-07 | 弗吉亚内饰工业 | Trim element comprising a deformable outer surface |
Also Published As
Publication number | Publication date |
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JP2011110949A (en) | 2011-06-09 |
JP5431129B2 (en) | 2014-03-05 |
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