WO2015080213A1 - 車両用シート - Google Patents
車両用シート Download PDFInfo
- Publication number
- WO2015080213A1 WO2015080213A1 PCT/JP2014/081419 JP2014081419W WO2015080213A1 WO 2015080213 A1 WO2015080213 A1 WO 2015080213A1 JP 2014081419 W JP2014081419 W JP 2014081419W WO 2015080213 A1 WO2015080213 A1 WO 2015080213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- sheet
- slit
- width direction
- bag body
- Prior art date
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Classifications
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- 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
- B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/58—Seat coverings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
-
- 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
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/58—Seat coverings
- B60N2002/5808—Seat coverings comprising opening zones for airbags
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- 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
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
- B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
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- 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
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
- B60R2021/23504—Inflatable members characterised by their material characterised by material
- B60R2021/23519—Resin
-
- 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
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
- B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
- B60R2021/23576—Sewing
Definitions
- the present invention relates to a vehicle seat provided with a side airbag device.
- Japanese Patent Application Laid-Open No. 9-76859 discloses a vehicle seat in which a side airbag device is provided on a side portion of a seat back.
- the side frame that forms part of the skeleton of the seat back is formed with a recess for storing the inflator and the bag body that form the side airbag device,
- a seat back pad is attached to the side frame.
- the side airbag apparatus is arrange
- a side side portion of the side airbag device is formed with a U-shaped slit in a side view of the seat, thereby, when the side airbag device is activated, That is, when the gas generated by the inflator is supplied into the bag body, the bag body can be easily deployed to the side of the sheet.
- the technique described in Japanese Patent Laid-Open No. 9-76859 is a useful technique in that the bag body of the side airbag device can be easily deployed to the side of the seat, There is room for improvement in terms of quickly deploying the bag body to the side of the seat.
- the present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to obtain a vehicle seat that can quickly deploy the bag body of the side airbag device to the side of the seat.
- a vehicle seat includes a side airbag device having an inflator and a bag body that expands when gas generated by the inflator is supplied therein, and an outer side in the seat width direction within the seat back.
- a side frame having an attached portion to which the side airbag device is attached, and an end portion of the side airbag device attached to the attached portion.
- An opening that covers from the outside and the rear side of the seat and through which the inflated bag passes, and a door that closes the opening and is pressed and rotated by the inflated bag to open the opening.
- a seat back pad having a fragile portion formed along the door portion on the rotating shaft side of the door portion.
- the bag body when the side airbag device attached to the side frame operates, that is, when the gas generated by the inflator is supplied into the bag body, the bag body expands. Further, the inflated bag body pushes away the door provided on the seat back pad and passes through the opening provided on the seat back pad. Thereby, a bag body expand
- the weak part is formed in the rotation axis side of the door part in a seat back pad, and when this is pressed by the bag body which the door part expanded, stress concentrates on the weak part. It is like that. In other words, by having the fragile portion, the door portion is rotated with less pressing force. As a result, according to the vehicle seat, the bag body of the side airbag device can be quickly deployed to the side of the seat.
- the vehicle seat according to a second aspect is the vehicle seat according to the first aspect, wherein the seat back pad is on the front side of the seat on the front side of the side airbag device attached to the attached portion.
- a rear wall portion extending inward, and the side wall portion is formed with a slit that forms an inner edge of the opening and an outer edge of the door portion. It is formed at the boundary between the side wall portion and the rear wall portion.
- the inflated bag body is developed on the side of the seat from the side wall portion arranged on the rear side of the side support portion and on the front side of the rear wall portion.
- the opening through which the inflated bag passes and the door for closing the opening can be formed in the side wall by a simple configuration in which the slit is formed in the side wall.
- the door portion can be rotated with less pressing force by forming the fragile portion at the boundary between the side wall portion and the rear wall portion, that is, at the bent or curved portion.
- a vehicle seat according to a third aspect is the vehicle seat according to the second aspect, wherein the slit is a first slit extending in the seat vertical direction, and a seat rear side from an end of the first slit on the seat upper side.
- An end and an end on the sheet rear side of the third slit are located at a boundary between the side wall portion and the rear wall portion.
- the rectangular opening through which the inflated bag passes and the rectangular door that closes the opening by the first slit, the second slit, and the third slit. Is formed on the side wall.
- the door part can be rotated with less pressing force with the rear end of the second slit and the rear end of the third slit as the rotation center.
- a vehicle seat according to a fourth aspect is the vehicle seat according to the third aspect, wherein the position of the second slit and the third slit is above the side airbag device and the side airbag device in a side view of the seat. Located on the lower side of the seat.
- the bag when the inflated bag passes through the opening, the bag interferes with the second slit and the third slit forming the upper edge and the lower edge of the opening. Can be suppressed. Thereby, the expansion
- the vehicle seat according to the fifth aspect is the vehicle seat according to any one of the second to fourth aspects, wherein the rear wall portion has an inner surface harder than the seat back pad.
- a sheet-like member is attached, and an end of the sheet-like member is located at a boundary between the side wall portion and the rear wall portion.
- the sheet-like member is attached to the inner surface of the rear wall portion, thereby causing a difference in rigidity at the boundary between the rear wall portion and the side wall portion.
- the vehicle seat according to a sixth aspect is the vehicle seat according to the fifth aspect, wherein the rear wall portion is an inclined portion extending in the seat width direction on the seat rear side of the side airbag device, A front end portion extending along an end portion on the seat rear side of the side frame from an end portion in the seat width direction of the inclined portion, and the sheet-like member is provided on the inner side of the seat of the inclined portion and the front end portion. Installed on the surface.
- the shape of the inclined portion and the front end portion of the rear wall portion is ensured while ensuring cushioning when the inclined portion and the front end portion of the rear wall portion are touched from the outside of the seat. Retention can be improved.
- the vehicle seat according to a seventh aspect is the vehicle seat according to the sixth aspect, wherein the side airbag device includes a base that supports the inflator and the bag body, The end of the sheet-like member on the inner side in the sheet width direction is in contact with the side frame, and the end of the sheet-like member on the outer side in the sheet width direction is in contact with the base.
- the vehicle seat according to the seventh aspect it is possible to suppress deformation of the inclined portion and the front end portion due to the inclined portion and the front end portion of the rear wall portion coming into contact with the side frame and the base.
- the vehicle seat according to an eighth aspect is the vehicle seat according to any one of the first to seventh aspects, wherein the size of the opening in the vertical direction of the seat is attached to the attached portion.
- the size of the side airbag device is set to be larger than the dimension in the vertical direction of the seat, and the upper edge and the lower edge of the opening are above the side airbag device and the seat than the side airbag device attached to the attached portion. Located on the lower side.
- the bag when the inflated bag passes through the opening, the bag can be prevented from interfering with the upper and lower edges of the opening. Thereby, the expansion
- a vehicle seat according to a ninth aspect is the vehicle seat according to any one of the first to eighth aspects, wherein the front edge of the bag body in which the front edge of the opening is in the retracted state and the side surface of the seat It is located on the front side of the seat with respect to the front end of the bag body in the same position or stored state as viewed.
- the bag when the inflated bag passes through the opening, the bag can be prevented from interfering with the front edge of the opening. Thereby, the expansion
- the hardness of the side support portion is set higher than the hardness of the side wall portion.
- the side support part when the inflated bag presses the side support part and the side wall part, the side support part is less likely to deform than the side wall part.
- the bag body which presses a side support part and a side wall part expand
- the deployment of the bag body to the outside in the sheet width direction can be accelerated.
- a vehicle seat according to an eleventh aspect is the vehicle seat according to any one of the first to tenth aspects, wherein the seat back pad is covered with a skin material, and the skin material includes the skin
- a rupture sewing portion is provided that breaks when pressed by the bag body expanded, and the reinforcing sheet having a higher tensile strength than the skin material straddles a part of the rupture sewing portion. It is attached to the skin material, and one end of the reinforcing sheet is fixed to the seat back pad.
- the vehicle seat pertaining to the eleventh aspect when the skin material is pressed against the inflated bag body, stress concentrates on the boundary between the break sewing portion and the reinforcing sheet provided on the skin material, and the stress is The broken sewing portion can be broken starting from the concentrated portion. That is, according to the vehicle seat, the bag body can be deployed early.
- the vehicle seat according to a twelfth aspect is the vehicle seat according to the eleventh aspect, wherein the skin material is disposed between the side support portions respectively disposed at both ends in the seat width direction.
- a main portion covering portion that covers a main portion constituting a part of the seat back pad; a side support portion covering portion that covers a seat front side surface of the side support portion; and the side wall portion from the outer surface in the seat width direction of the side support portion.
- a side-side covering portion that covers the outer side portion of the rear wall portion, and the portion where the side support portion covering portion and the side-side covering portion are sewn is the fracture sewing portion.
- the reinforcing sheet is extended along the seat back pad side surface of the side support portion covering portion and the side covering portion.
- the first reinforcing sheet and the second reinforcing sheet are sewn to the side support portion covering portion and the side side covering portion, respectively.
- the first reinforcing sheet is connected to the main portion in a state in which one end of a connecting member connected to the seat back pad is sandwiched between the main portion covering portion and the side support portion covering portion.
- the cover portion and the side support portion cover portion are sewn.
- the vehicle seat according to a thirteenth aspect is the vehicle seat according to the eleventh aspect or the twelfth aspect including the configuration of the third aspect, wherein the reinforcing sheet and the first slit are seats in a side view. It is arranged overlapping in the width direction.
- the vehicle seat pertaining to the thirteenth aspect when the skin material is pressed against the inflated bag, stress is concentrated at the boundary between the skin material and the reinforcing sheet. Further, the first slit that forms the front edge of the door portion through which the inflated bag passes and the reinforcing sheet are arranged so as to overlap each other, thereby further increasing the stress generated at the boundary between the skin material and the reinforcing sheet. Can be increased. Thereby, a bag body can be developed earlier.
- a vehicle seat according to a fourteenth aspect is the vehicle seat according to the twelfth aspect, wherein a portion where the main portion covering portion and the side support portion covering portion are sewn is insert-molded in the seat back pad. It is connected to the insert wire via the connecting member and the hog ring.
- the skin material can be easily attached to the seat back pad by connecting the connecting member to the insert wire via the bog ring.
- the vehicle seat according to the present invention has an excellent effect that the bag body of the side airbag device can be quickly deployed to the side of the seat.
- FIG. 3 is an enlarged cross-sectional view showing a cross section of an end portion in the seat width direction of the vehicle seat according to the first embodiment cut along line 1-1 shown in FIG. 2; It is the side view which looked at the vehicle seat which concerns on 1st Embodiment from the seat side.
- FIG. 3 is an enlarged cross-sectional view corresponding to FIG. 1 showing an end portion in the seat width direction after the side airbag device is activated.
- FIG. 6 is an enlarged cross-sectional view showing a cross section of an end portion in the seat width direction of a vehicle seat according to a second embodiment cut along line 4-4 shown in FIG. 5; It is the side view corresponding to FIG. 2 which looked at the vehicle seat which concerns on 2nd Embodiment from the seat side. It is a side view which shows the slit which concerns on a modification.
- the vehicle seat according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
- the front / rear / left / right / up / down directions will be described, and the front / rear / left / right / up / down directions viewed from the occupant seated on the vehicle seat will be indicated.
- the arrow UP indicates the upward direction
- the arrow RH indicates the right direction
- the arrow LH indicates the left direction.
- the arrow RH and the arrow LH coincide with the sheet width direction.
- the vehicle seat 10 of the present embodiment is used as a driver seat of a so-called right-hand drive vehicle, and the vehicle seat 10 supports the occupant P's buttocks and thighs.
- a seat cushion 12, a seat back 14 that supports the back of the occupant P, and a headrest 16 that supports the head of the occupant P are provided.
- a side airbag device 18 is provided inside the seat back 14.
- the seat back 14 is attached to the rear end portion of the seat cushion 12 so as to be tiltable.
- the seat back 14 is configured by attaching a seat back pad 22 covered with a skin material 20 to a seat back frame 24. ing.
- the seat back frame 24 constituting the skeleton of the seat back 14 includes a pair of side frames 26 extending in the seat vertical direction at the right and left ends in the seat width direction in the seat back 14, and a pair of side frames 26. And an upper frame 28 connecting the upper ends in the seat width direction.
- the side frame 26 is formed in a substantially U-shaped cross section in which the inner side in the seat width direction is opened in a plan view of the seat.
- the side frame 26 includes a general portion 30 extending in the seat vertical direction with the sheet width direction as a plate thickness direction, a front flange portion 32 extending from the front end of the general portion 30 toward the inside in the seat width direction, and a rear end of the general portion 30.
- a rear flange portion 34 that extends inward in the seat width direction and has a dimension in the seat width direction that is set to be longer than that of the front flange portion 32.
- the intermediate portion of the general portion 30 in the vertical direction of the seat is a mounted portion 36 to which the side airbag device 18 is attached, and the side airbag device 18 is bolted to the outer surface of the mounted portion 36 in the seat width direction. And is fixed via a nut or the like.
- the side airbag device 18 includes an inflator 38 that generates gas, a bag body 40 that is inflated when gas generated by the inflator 38 is supplied therein, and a base (case) 42 that supports the inflator 38 and the bag body 40. And.
- the base 42 is formed in a substantially J-shaped cross section in which the front side of the seat is opened in a plan view of the seat.
- the base 42 extends along the attached portion 36 of the side frame 26 and is fixed to the attached portion 36, and a first extension extending from the rear end of the fixed portion 42A toward the outside in the seat width direction.
- the extending portion 42 ⁇ / b> B and the second extending portion 42 ⁇ / b> C extending from the outer end of the first extending portion 42 ⁇ / b> B in the seat width direction toward the front side of the seat are provided.
- the inflator 38 is disposed in a region surrounded by the fixing portion 42A, the first extending portion 42B, and the second extending portion 42C of the base 42, and the inflator 38 is supported by the fixing portion 42A.
- the bag body 40 is formed into a bag shape by sewing the outer peripheral portions of two cloths that are difficult to permeate gas, or is formed into a bag shape by weaving the outer peripheral portions without sewing.
- the shape of the bag body 40 when it is inflated and deployed is formed in a substantially rectangular shape when viewed from the side of the seat.
- the gas supply part side of the bag body 40 that is, the inflator 38 side of the bag body 40 is supported by the fixing part 42 ⁇ / b> A of the base 42, and the bag body 40 is placed in a retracted state by being folded into a predetermined shape.
- the base 42 is provided with a covering member 44 that covers the bag body 40 in the retracted state, and the covering member 44 is easily broken when pressed by the expanded bag body 40. Yes.
- the seat back pad 22 is formed by injecting a foamed resin material such as polyurethane resin into a predetermined mold and foaming in the mold, and the seat back pad 22 is formed in the seat width direction.
- a side support portion 46 disposed at each end portion and a main portion 48 disposed between the pair of side support portions 46 are provided.
- the side support portion 46 is formed so as to protrude to the front side of the seat with respect to the main portion 48, thereby suppressing the occupant P seated on the vehicle seat 10 from moving in the seat width direction.
- a groove 50 opened toward the front side of the seat is formed at the boundary between the side support portion 46 and the main portion 48.
- the seat back pad 22 has a side wall portion 52 extending from the seat width direction end portion of the side support portion 46 toward the seat rear side, and a rear portion extending from the seat rear side end portion of the side wall portion 52 toward the seat width direction inner side. And a wall portion 54.
- the density of the side support portions 46 is set to be higher than the density of the side wall portions 52 and the rear wall portions 54, and thereby the hardness of the side support portions 46 is the hardness of the side wall portions 52 and the rear wall portions 54. Higher than.
- the side wall 52 is formed with a slit 56 that is open toward the rear side of the seat and whose edge is substantially U-shaped (U-shaped).
- the slit 56 includes a first slit 56A extending in the vertical direction of the sheet, and a second slit 56B and a third slit 56C extending from the upper end and the lower end of the first slit 56A toward the rear side of the sheet. ing.
- the rear ends R1, R2 of the second slit 56B and the third slit 56C are located at the boundary between the side wall portion 52 and the rear wall portion 54, respectively. As shown in FIG.
- a recess as a fragile portion that connects the rear end R1 of the second slit 56B and the rear end R2 of the third slit 56C in the seat vertical direction.
- Portions 58 and 60 are formed.
- the recessed portion 58 and the recessed portion 60 are respectively formed on the outer side and the inner side in the sheet width direction at the boundary between the side wall portion 52 and the rear wall portion 54.
- the slit 56 described above is formed in the side wall portion 52, whereby a substantially rectangular opening 62 and a door portion 64 for closing the opening 62 are formed in the side wall 52. It has become so. More specifically, the outer edge of the door portion 64 is formed by the first slit 56A, the second slit 56B, and the third slit 56C, and the door portion 64 is connected to the side wall portion 52 as shown in FIGS. A substantially rectangular opening 62 is formed in the side wall 52 by rotating the boundary of the rear wall 54 as a rotation axis. The inner edge of the opening 62 is formed by the first slit 56A, the second slit 56B, the third slit 56C, and the base end side (rotating shaft side) of the door portion 64.
- the dimension L1 of the opening 62 in the seat vertical direction is larger than the dimension L2 of the side airbag device 18 attached to the attached portion 36 of the side frame 26 in the seat vertical direction. Is set. Further, the positions of the second slit 56B and the third slit 56C forming the upper edge and the lower edge of the opening 62 are located above the side airbag device 18 so that the bag body 40 in the unconstrained deployed state does not interfere. And on the lower side of the seat.
- the bag body 40 in the unconstrained deployed state refers to the bag body 40 in a state where the occupant P is not in contact. Further, as shown in FIG. 1, the position of the first slit 56A that forms the front edge of the opening 62 is located at substantially the same position as the front end 40A of the bag body 40 in the retracted state in a side view of the seat. Yes.
- the rear wall portion 54 of the seat back pad 22 includes an inclined portion 54A extending in the seat width direction on the seat rear side of the side airbag device 18, and a rear flange of the side frame 26 from an end portion on the inner side in the seat width direction of the inclined portion 54A.
- a distal end portion 54 ⁇ / b> B extending along the portion 34.
- the rear wall portion 54 of the seat back pad 22 is provided on the inner surface of the inclined portion 54A and the front end portion 54B, that is, on the front surface (side frame 26 side) of the inclined portion 54A and the front end portion 54B.
- the back surface material 66 as a sheet-like member formed using the material harder than the side wall part 52 is attached.
- the back material 66 is, for example, a nonwoven fabric impregnated with a resin.
- An end 66B on the inner side in the sheet width direction of the back surface member 66 is in contact with the rear flange 34 of the side frame 26, and an end on the outer side in the sheet width direction is in contact with the first extending portion 42B of the base 42.
- the end 66 ⁇ / b> A of the back material 66 on the outer side in the sheet width direction is located at the boundary between the side wall portion 52 and the rear wall portion 54.
- a back material 67 formed using the same non-woven fabric as the back material 66 is attached from the main part 48 of the seat back pad 22 to the inner surface of the side support part 46. Further, an end 67A on the outer side in the vehicle width direction of the back material 67 is positioned at an intermediate portion in the seat width direction of the side support portion 46, and an end 67A on the outer side in the vehicle width direction of the back material 67 Is in contact with the front flange portion 32.
- the skin material 20 that covers the seat back pad 22 is made of cloth or leather, and the skin material 20 of the present embodiment includes a main portion covering portion 68, a side support portion covering portion 70, and side portions cut into a predetermined shape.
- the side covering portion 72 is formed by appropriately sewing. Specifically, the sheet width direction of the side support portion covering portion 70 that covers the sheet width direction outer end of the main portion covering portion 68 that covers the front surface of the main portion 48 and the front surface of the side support portion 46. The inner end is sewn.
- One end of a connecting member (suspended cotton cloth) 74 is sewn to the sewn portion A, and the other end of the connecting member 74 is insert-molded into the seat back pad 22 at the position of the recessed groove 50 and integrated.
- the sewn part B is a broken sewn part B that breaks along with the operation of the side airbag device 18.
- the side airbag device 18 attached to the side frame 26 is activated in a vehicle emergency (for example, at the time of a collision), that is, the gas generated by the inflator 38 is supplied into the bag body 40. Then, the bag body 40 expands. As shown in FIG. 3, the inflated bag body 40 pushes away the door portion 64 provided on the side wall portion 52 of the seat back pad 22, passes through the opening portion 62 provided on the side wall portion 52, and the epidermis. The material 20 is ruptured starting from the break sewing portion B. Thereby, the bag body 40 expands to the side of the sheet.
- depressions 58 and 60 are formed on the rotation axis side of the door portion 64 in the seat back pad 22, and thereby stress is applied when the door portion 64 is pressed against the inflated bag body 40.
- the recesses 58 and 60 are concentrated in the recesses 58 and 60.
- the door portion 64 is rotated with less pressing force by having the recess portions 58 and 60.
- the bag body 40 of the side airbag device 18 can be quickly deployed to the side of the seat.
- the opening portion 62 through which the inflated bag body 40 passes and the door portion 64 that closes the opening portion 62 are formed in the side wall portion 52 by a simple configuration in which the slit 56 is formed in the side wall portion 52. Can be formed.
- the door portion 64 can be pressed with less pressing force. It can be rotated.
- the back material 66 is attached to the rear wall portion 54, thereby causing a difference in rigidity at the boundary between the rear wall portion 54 and the side wall portion 52.
- the boundary between the rear wall part 54 and the side wall part 52 that is, the part where the rigidity difference occurs is a starting point. It can be easily deformed (stress can be concentrated on a portion where a difference in rigidity is generated). As a result, the door part 64 can be rotated with less pressing force.
- the positions of the second slit 56B and the third slit 56C that form the upper edge and the lower edge of the opening 62 are set to the above positions with respect to the side airbag device 18.
- the bag body 40 in the unconstrained unfolded state does not interfere. Thereby, the expansion
- the hardness of the side support part 46 located in front of the vehicle of the side airbag device 18 is set higher than the hardness of the side wall part 52 and the rear wall part 54. Therefore, when the inflated bag body 40 presses the side support part 46, the side wall part 52, and the rear wall part 54, the side support part 46 is less likely to be deformed than the side wall part 52 and the rear wall part 54. Thereby, the bag body 40 which presses the side support part 46, the side wall part 52, and the rear wall part 54 expand
- the hardness of the side support portion 46 is set higher than the hardness of the side wall portion 52 and the rear wall portion 54 has been described, but the present invention is not limited to this.
- the hardness of the side support portion 46 may be set as appropriate in consideration of the support performance of the occupant P, the deployment speed of the bag body 40, and the like.
- the present invention is not limited to this.
- the positions of the upper edge and the lower edge of the opening 62 may be appropriately set in consideration of the deployment speed of the bag body 40 and the like.
- the vehicle seat 80 of the present embodiment is characterized in that reinforcing sheets (reinforcing cloths) 82 and 84 formed in a band shape are attached to the skin material 20.
- the first reinforcing sheet 84 and the second reinforcing sheet 82 are formed using a material having a higher tensile strength than the skin material 20, and the first reinforcing sheet 84 and the second reinforcing sheet 82 are The side support part covering part 70 and the side covering part 72 extend along the surface on the seat back pad 22 side.
- the first reinforcing sheet 84 and the second reinforcing sheet 82 are appropriately sewn to the side support portion covering portion 70 and the side side covering portion 72.
- first reinforcing sheet 84 and the second reinforcing sheet 82 are sewn together at the break sewing portion B. Further, in the sewing site A, the first reinforcing sheet 84 is covered with the main portion covering portion 68 and the side support portion covering with one end of the connecting member 74 sandwiched between the main portion covering portion 68 and the side support portion covering portion 70. The portion 70 is sewn.
- the second reinforcing sheet 82 and the first slit 56 ⁇ / b> A are disposed so as to overlap in the sheet width direction when viewed from the side of the sheet.
- the seat back pad 22 and the skin material 20 are pressed against the inflated bag body 40. Then, the side support part covering part 70 is pushed toward the vehicle front side and tends to extend.
- the sewing portion A is connected to the connecting member 74 and the hog ring 78.
- the insert wire 76 is insert-molded into the seat back pad 22 through the connector.
- the seat back pad 22 may be provided with a slit 86 in which the first slit 56 ⁇ / b> A is formed in a broken line shape in a side view of the seat.
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Abstract
Description
図1及び図2を用いて、本発明の第1実施形態に係る車両用シートについて説明する。なお、以下の説明において前後左右上下の方向を示して説明するときは、車両用シートに着座した乗員から見た前後左右上下の方向を示すものとし、また各図に適宜示す矢印FRは前方向、矢印UPは上方向、矢印RHは右方向、矢印LHは左方向をそれぞれ示すものとする。また、矢印RH及び矢印LHは、シート幅方向と一致している。
次に、本実施形態の作用並びに効果について説明する。
図4及び図5を用いて、本発明の第2実施形態に係る車両用シートについて説明する。なお、第1実施形態に係る車両用シート10と同一の部材及び同一の部分については、第1実施形態で用いた符号と同一の符号を付してその説明を省略する。
Claims (14)
- インフレータと、該インフレータが発生したガスが内部に供給されることによって膨張する袋体と、を有するサイドエアバッグ装置と、
シートバック内のシート幅方向外側の端部においてシート上下方向に延設され、前記サイドエアバッグ装置が取付けられる被取付部を有するサイドフレームと、
前記被取付部に取付けられた前記サイドエアバッグ装置をシート前方側、シート幅方向外側及びシート後方側から覆い、かつ膨張した前記袋体が通過する開口部と、該開口部を閉止すると共に膨張した前記袋体に押圧されて回動されることによって前記開口部を開放させるドア部と、該ドア部の回動軸側において該ドア部に沿って形成された脆弱部と、を有するシートバックパッドと、
を備えた車両用シート。 - 前記シートバックパッドは、前記被取付部に取付けられた前記サイドエアバッグ装置のシート前方側においてシート前方側に突出するサイドサポート部と、該サイドサポート部のシート幅方向端部からシート後方側に向けて延びる側壁部と、該側壁部のシート後方側端部から前記サイドエアバッグ装置のシート後方側においてシート幅方向内側に向けて延びる後壁部と、を備えており、
前記側壁部には、前記開口部の内縁を形成すると共に前記ドア部の外縁を形成するスリットが形成されており、
前記脆弱部は、前記側壁部と前記後壁部との境目に形成されている請求項1記載の車両用シート。 - 前記スリットは、シート上下方向に延びる第1スリットと、前記第1スリットのシート上方側の端からシート後方側に向けて延びる第2スリットと、前記第1スリットのシート下方側の端からシート後方側に向けて延びる第3スリットと、を有して構成されており、
前記第2スリットのシート後方側の端及び前記第3スリットのシート後方側の端が、前記側壁部と前記後壁部との境目に位置している請求項2記載の車両用シート。 - 前記第2スリット及び前記第3スリットの位置が、シート側面視で前記サイドエアバッグ装置よりもシート上方側及びシート下方側にそれぞれ位置している請求項3記載の車両用シート。
- 前記後壁部のシート内側の面には、前記シートバックパッドよりも硬質とされたシート状部材が取付けられており、
前記シート状部材の端が前記側壁部と前記後壁部との境目に位置している請求項2~請求項4のいずれか1項に記載の車両用シート。 - 前記後壁部は、前記サイドエアバッグ装置のシート後方側においてシート幅方向に延びる傾斜部と、前記傾斜部のシート幅方向内側の端部からサイドフレームのシート後方側の端部に沿って延びる先端部と、を備えており、
前記シート状部材が、前記傾斜部及び前記先端部のシート内側の面に取付けられている請求項5記載の車両用シート。 - 前記サイドエアバッグ装置は、前記インフレータ及び前記袋体を支持するベースを含んで構成されており、
前記シート状部材のシート幅方向内側の端部が、前記サイドフレームに当接していると共に、前記シート状部材のシート幅方向外側の端部が、前記ベースに当接している請求項6記載の車両用シート。 - 前記開口部のシート上下方向への寸法が、前記被取付部に取付けられた前記サイドエアバッグ装置のシート上下方向への寸法よりも大きく設定されており、
前記開口部の上縁及び下縁が、前記被取付部に取付けられた前記サイドエアバッグ装置よりもシート上方側及びシート下方側にそれぞれ位置している請求項1~請求項7のいずれか1項に記載の車両用シート。 - 前記開口部の前縁が、格納状態とされた前記袋体の前端とシート側面視で同位置、或いは、格納状態とされた前記袋体の前端よりもシート前方側に位置している請求項1~請求項8のいずれか1項に記載の車両用シート。
- 前記サイドサポート部の硬度が前記側壁部の硬度よりも高く設定されている請求項2~請求項9のいずれか1項に記載の車両用シート。
- 前記シートバックパッドは表皮材に覆われており、
前記表皮材には、該表皮材が膨張した前記袋体に押圧されることによって破断する破断縫製部が設けられており、
前記表皮材よりも引張強度の高い補強シートが、前記破断縫製部の一部を跨いだ状態で前記表皮材に取付けられており、
前記補強シートの一端が、前記シートバックパッドに固定されている請求項1~請求項10のいずれか1項に記載の車両用シート。 - 前記表皮材は、シート幅方向の両端部にそれぞれ配置された前記サイドサポート部の間に配置されていると共に前記シートバックパッドの一部を構成するメイン部を覆うメイン部被覆部と、前記サイドサポート部のシート前方側の面を覆うサイドサポート部被覆部と、前記サイドサポート部のシート幅方向外側の面から前記側壁部及び前記後壁部の外側部を覆う側方側被覆部と、を含んで構成されていると共に、前記サイドサポート部被覆部と前記側方側被覆部とが縫製された部位が、前記破断縫製部とされており、
前記補強シートは、前記サイドサポート部被覆部及び前記側方側被覆部の前記シートバックパッド側の面に沿ってそれぞれ延在された状態で前記サイドサポート部被覆部及び前記側方側被覆部にそれぞれ縫製される第1補強シート及び第2補強シートとされていると共に、前記第1補強シートと前記第2補強シートとが、前記破断縫製部において互いに縫製されており、
前記シートバックパッドに連結される連結部材の一端が前記メイン部被覆部と前記サイドサポート部被覆部との間に挟まれた状態で、前記第1補強シートが前記メイン部被覆部及び前記サイドサポート部被覆部に縫製されている請求項11記載の車両用シート。 - 前記補強シートと前記第1スリットとがシート側面視でシート幅方向にオーバーラップして配置されている請求項3を引用する請求項11又は請求項12記載の車両用シート。
- 前記メイン部被覆部と前記サイドサポート部被覆部とが縫製された部位が、前記シートバックパッドにインサート成形されたインサートワイヤに前記連結部材及びホグリングを介して連結されている請求項12記載の車両用シート。
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EP14865397.5A EP3075611B1 (en) | 2013-11-27 | 2014-11-27 | Vehicular seat |
KR1020167013909A KR101775857B1 (ko) | 2013-11-27 | 2014-11-27 | 차량용 시트 |
AU2014355356A AU2014355356B2 (en) | 2013-11-27 | 2014-11-27 | Vehicle Seat |
US15/039,162 US9707917B2 (en) | 2013-11-27 | 2014-11-27 | Vehicle seat |
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WO2018083919A1 (ja) * | 2016-11-04 | 2018-05-11 | テイ・エス テック株式会社 | 車両用シート |
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JP7554594B2 (ja) * | 2020-07-31 | 2024-09-20 | アディエント ユーエス エルエルシー | 車両用シート |
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US20170101072A1 (en) | 2017-04-13 |
KR101775857B1 (ko) | 2017-09-06 |
EP3075611B1 (en) | 2018-05-16 |
EP3075611A4 (en) | 2017-01-11 |
AU2014355356A1 (en) | 2016-06-16 |
JP2015101297A (ja) | 2015-06-04 |
AU2014355356B2 (en) | 2017-03-23 |
CN105992716A (zh) | 2016-10-05 |
KR20160078416A (ko) | 2016-07-04 |
US9707917B2 (en) | 2017-07-18 |
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CN105992716B (zh) | 2018-04-10 |
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