JP6139956B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat in which one end of a guide member that guides the deployment direction of an airbag is attached to a side frame, and the other end is sewn to an epidermis terminal.

Conventionally, as a vehicle seat equipped with a side airbag module, the side frame is fixed to the seat back frame, the airbag module is attached to the side frame, and the skin cover has a gusset portion corresponding to the side frame. In addition, a cloth that has a structure in which a reinforcing cloth is provided on the inner side of the gusset part and only the sewing part at the front end of the gusset part is pushed and broken by the airbag that extends forward from the airbag module is widely used. .
In a front seat for a general vehicle, a pair of gusset portions corresponding to the side frames are provided on both the left and right sides, and a pair of left and right sewing portions are provided on the front end of the gusset portion. The module and the reinforcing cloth are provided only on the vehicle door side.
A reinforcing cloth is sewn to one of a pair of ends sewn at the sewing portion at the sewing portion at the front end of the gusset portion, and the sewing portion faces the pad material.
As such a vehicle seat, the front end of the reinforcing cloth is stitched to the front end of the gusset portion, a metal fitting having attachment holes at the top and bottom is attached to the rear end, and an attachment hole corresponding to the attachment hole is provided in the seat back frame. There has been proposed one in which a panel bracket is fixed and both mounting holes are attached by fastening means (for example, Patent Document 1).

  In Patent Document 1, the rear end of the reinforcing cloth is attached to the panel bracket of the seat back frame via a metal fitting, so that the rear end of the reinforcing cloth is hooked on the seat back frame with a wire or a hook. The seam of the sewing machine does not meander, and an excellent appearance can be achieved.

JP-A-10-181502

  However, in the invention of Patent Document 1, the side where the airbag module is provided, that is, the side where the reinforcing cloth is co-sewn, Since the number of sheets increased, the pressure between the pad material appeared to be higher than the other. Accordingly, there has been a demand for the development of a vehicle seat in which only one side frame is provided with a side airbag module and a reinforcing cloth, with the right and left gusset portions having no discrepancy in appearance.

The present invention has been made in view of the above problems, and an object of the present invention is a vehicle seat in which a guide member for guiding a deployment direction of a side airbag is sewn to a gusset portion of an outer skin material, An object of the present invention is to provide a vehicle seat in which the stitching portion of the guide member is suppressed from affecting the appearance through the skin material.
Another object of the present invention is a vehicle seat provided with a side airbag only in one of a pair of left and right side portions, and the appearance of the gusset portion is stitched with a guide member that guides the deployment direction of the airbag. An object of the present invention is to provide a vehicle seat in which left-right asymmetry is suppressed between the non-side and the non-side.

According to the vehicle seat of claim 1, the subject is a seat frame, a cushion pad supported by the seat frame, an airbag module fixed to the seat frame and storing an airbag, and the airbag A vehicular seat comprising a module and a skin material covering the cushion pad, the vehicle seat having a guide member for guiding a deployment direction of the airbag, and a pair of terminals of the skin material, An end portion of the guide member fixed to one of the two is attached to each other, and includes a breakage portion that is a starting point of breakage of the skin material when the airbag is deployed and that faces the cushion pad, A recess that faces the fracture portion, and the plan is more than the region of the recess facing the terminal side where the guide member is not fixed. Towards an area where the terminal side member is fixed is opposed is solved deep that, by.

Due to the configuration as this, the surface pressure cushion pad receives from breaking portion, can be adjusted in the depth of the concave portion, the surface pressure cushion pad receives from the epidermis and the guide member in the fracture portion, the guide member It can be easily adjusted so that the terminal side to which the guide member is fixed is lower than the terminal side that is not fixed.
Even if the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface that the cushion pad receives from the skin material and the guide member at the fracture portion is configured in this way. The pressure is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed, and the fracture portion on the side on which the guide member is fixed is equivalent to that of the guide member. There is no overhang on the front side. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.

According to the vehicle seat of claim 2 , the subject is a seat frame, a cushion pad supported by the seat frame, an airbag module fixed to the seat frame and storing an airbag, and the airbag A vehicular seat comprising a module and a skin material covering the cushion pad, the vehicle seat having a guide member for guiding a deployment direction of the airbag, and a pair of terminals of the skin material, An end portion of the guide member fixed to one of the two is attached to each other, and includes a breakage portion that is a starting point of breakage of the skin material when the airbag is deployed and is opposed to the cushion pad. Among these, the region where the terminal side is opposed to the terminal side where the guide member is fixed rather than the region where the terminal side is opposed to which the guide member is not fixed It is, is solved hardness is low, the.
Since it comprises in this way, the surface pressure which a cushion pad receives from a skin material and a guide member in a fracture | rupture part is lower on the terminal side to which the guide member is fixed than on the terminal side to which the guide member is not fixed. As a result, it is possible to suppress the appearance of the stitched portions of the pair of skin materials from being different between the side having the airbag module and the side not having the airbag module, and to prevent the left and right appearances from being inconsistent. it can.
Even if the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface that the cushion pad receives from the skin material and the guide member at the fracture portion is configured in this way. The pressure is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed, and the fracture portion on the side on which the guide member is fixed is equivalent to that of the guide member. There is no overhang on the front side. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.

According to the vehicle seat of claim 3 , the subject is a seat frame, a cushion pad supported by the seat frame, an airbag module fixed to the seat frame and storing an airbag, and the airbag A vehicular seat comprising a module and a skin material covering the cushion pad, the vehicle seat having a guide member for guiding a deployment direction of the airbag, and a pair of terminals of the skin material, An end portion of the guide member fixed to one of the two is attached to each other, and includes a breakage portion that is a starting point of breakage of the skin material when the airbag is deployed and that faces the cushion pad, A recess facing the fracture portion, and the center of the recess is located closer to the terminal side where the guide member is fixed than the center of the fracture portion. That it is opposed to be solved by.
Of the peripheral part of the fractured part, the terminal side of the skin material to which the guide member is fixed is bulky because the guide member is fixed, and thus the center of the recess is fixed to the center of the recess. By facing the terminal side position, the bulky portion can be stored in the center of the recess. As a result, it is possible to efficiently suppress the difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and efficiently suppress the occurrence of inconsistency between the left and right appearances. it can.

Moreover, since the center of the concave portion faces the position on the terminal side where the guide member is fixed, the size of the concave portion can be made small. Thus, as a result of reducing the size of the concave portion, even if the stitched portion facing the concave portion does not include a guide member, the concave portion is prevented from affecting the appearance through the skin material. A cushion pad that can be used in common can be formed in a portion where the guide member is not provided in the stitched portion of the terminal.
Therefore, for example, in a seat equipped with an airbag module in one of the pair of left and right side portions, the same recess is provided at a position facing the stitched portion of the terminal of the skin material on the airbag module equipment side and the non-equipment side. The cushion pad can be used in common.
Even if the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface that the cushion pad receives from the skin material and the guide member at the fracture portion is configured in this way. The pressure is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed, and the fracture portion on the side on which the guide member is fixed is equivalent to that of the guide member. There is no overhang on the front side. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.
As in claim 4, the surface pressure received by the cushion pad from the skin material and the guide member at the fracture portion is higher than the terminal side where the guide member is not fixed. It is preferable that the terminal side is lower.
Even when the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface pressure received by the cushion pad from the skin material and the guide member at the fracture portion is thus the guide member. Since the terminal side to which the guide member is fixed is lower than the terminal side to which the guide member is not fixed, the broken portion on the side to which the guide member is fixed appears to protrude to the front side of the skin material by the amount of the guide member. There is nothing. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.

At this time, as in claim 5, the seat frame is a frame of a seat back that supports the back surface of the seated person, and the cushion pad is disposed at both ends in the seat width direction and on the outer side in the seat width direction. A side part projecting forward on the end side is provided, and among the cushion pads, at least the left and right side parts are symmetrically provided with the recesses at symmetrical positions around the center in the width direction of the seat. It is suitable if it consists of a shape.
Since it is configured in this manner, in the seat back that supports the back surface of the seated person, a cushion pad having a symmetrical shape is used for both the guide member equipment side and the non-equipment side of the pair of left and right sides. For example, the same type of cushion pad can be used for a left-hand drive vehicle and a right-hand drive vehicle.

At this time, it is preferable that the guide member is an inner guide member that is drawn inward in the seat width direction of the airbag module through the front of the airbag module.
Since it is configured in this manner, the shape of the fractured portion is provided with an inner guide member that protects the front side of the airbag module, which is more necessary to suppress the influence of the inflation force of the airbag when the airbag is inflated. It is possible to suppress the influence on the outer appearance of the skin material.

At this time, as in claim 7, it is preferable that the concave portion is a groove continuously provided along the ends of the pair of skin materials.
Since it comprises in this way, compared with the case where a groove | channel is provided only in a fracture | rupture part vicinity, it can be set as a thing without a sense of incongruity in the external appearance when covering with a skin material.

At this time, as described in claim 8, the groove gradually changes in depth between the end portion of the groove and the deepest bottom portion of the groove, and extends along the ends of the pair of skin materials. It is preferable that an inclined surface is provided, and an end portion of the guide member abuts on the inclined surface.
Since it comprises in this way, the depth and magnitude | size of a groove | channel can be made into the minimum, and the influence on the external appearance by a groove | channel when covering with a skin material can be decreased.

At this time, it is preferable that the groove is formed deepest in a region facing the guide member.
Since the region where the guide member is disposed is the most bulky in the vicinity of the fractured portion, the depth and size of the groove are minimized by forming the groove deeply in this bulky region. It is possible to reduce the influence of the groove on the appearance when the skin material is covered.

According to the first aspect of the present invention, since the surface pressure received by the cushion pad from the broken portion side can be adjusted by the depth of the concave portion, the guide member fixes the surface pressure received by the cushion pad from the skin and the guide member at the broken portion. It can be easily adjusted so that the terminal side to which the guide member is fixed is lower than the terminal side that is not provided.
Even if the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface that the cushion pad receives from the skin material and the guide member at the fracture portion is configured in this way. The pressure is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed, and the fracture portion on the side on which the guide member is fixed is equivalent to that of the guide member. There is no overhang on the front side. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.

According to the invention of claim 2, the surface pressure received by the cushion pad from the skin material and the guide member at the fracture portion is lower on the terminal side where the guide member is fixed than on the terminal side where the guide member is not fixed. As a result, it is possible to suppress the appearance of the stitched portions of the pair of skin materials from being different between the side having the airbag module and the side not having the airbag module, and to prevent the left and right appearances from being inconsistent. it can.
Even if the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface that the cushion pad receives from the skin material and the guide member at the fracture portion is configured in this way. The pressure is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed, and the fracture portion on the side on which the guide member is fixed is equivalent to that of the guide member. There is no overhang on the front side. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.

Of the peripheral portion of the fractured portion, the end side of the skin material to which the guide member is fixed is bulky because the guide member is fixed, so that the center of the recess is the center of the recess as in the invention of claim 3. By facing the terminal side position where the guide member is fixed, a bulky portion can be stored in the center of the recess. As a result, it is possible to efficiently suppress the difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and efficiently suppress the occurrence of inconsistency between the left and right appearances. it can.

Moreover, since the center of the concave portion faces the position on the terminal side where the guide member is fixed, the size of the concave portion can be made small. Thus, as a result of reducing the size of the concave portion, even if the stitched portion facing the concave portion does not include a guide member, the concave portion is prevented from affecting the appearance through the skin material. A cushion pad that can be used in common can be formed in a portion where the guide member is not provided in the stitched portion of the terminal.
Therefore, for example, in a seat equipped with an airbag module in one of the pair of left and right side portions, the same recess is provided at a position facing the stitched portion of the terminal of the skin material on the airbag module equipment side and the non-equipment side. The cushion pad can be used in common.
Even if the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the surface that the cushion pad receives from the skin material and the guide member at the fracture portion is configured in this way. The pressure is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed, and the fracture portion on the side on which the guide member is fixed is equivalent to that of the guide member. There is no overhang on the front side. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.
According to the invention of claim 4, even when the end portion of the guide member is fixed to only one of the ends of the pair of skin materials, the cushion material is cushioned from the skin material and the guide member at the fracture portion as described above. The surface pressure received by the pad is lower on the terminal side on which the guide member is fixed than on the terminal side on which the guide member is not fixed. , It does not seem to overhang the front side of the skin material. As a result, it is possible to suppress a difference in appearance between the stitched portions of the pair of skin materials between the side including the airbag module and the side not including the airbag module, and it is possible to suppress a mismatch between the left and right appearances.

  According to the invention of claim 5, in the seat back that supports the back surface of the seated person, the cushion pad having a symmetrical shape is used for both the guide member equipment side and the non-equipment side of the pair of left and right sides. For example, the same type of cushion pad can be used for a left-hand drive vehicle and a right-hand drive vehicle.

  According to the invention of claim 6, the shape of the fracture portion is provided with the inner guide member that protects the front side of the airbag module, which is more necessary to suppress the influence of the inflation force of the airbag when the airbag is inflated. It is possible to suppress the influence on the outer appearance of the skin material.

According to the seventh aspect of the present invention, the appearance when the skin material is covered can be made uncomfortable as compared with the case where the groove is provided only in the vicinity of the fracture portion.
According to invention of Claim 8, the depth and size of a groove | channel can be made into the minimum, and the influence on the external appearance by a groove | channel when covering with a skin material can be decreased.

  Since the region where the guide member is arranged is the most bulky in the vicinity of the fractured portion, the depth and size of the groove can be obtained by forming the groove deeply in this bulky region as in the invention of claim 9. Can be minimized, and the influence of the groove on the appearance when the skin material is covered can be reduced.

1 is an external view of a vehicle seat according to an embodiment of the present invention. It is a perspective view of a seat frame of a vehicular seat concerning one embodiment of the present invention. It is AA sectional drawing of FIG. It is explanatory drawing which shows the state which sewed together the trim cover and power cloth which concern on one Embodiment of this invention in the fracture | rupture part. It is a perspective view of the attachment member for attaching the guide member which concerns on one Embodiment of this invention to a side frame. It is a top view of the attachment member for attaching the guide member which concerns on one Embodiment of this invention to a side frame. It is sectional explanatory drawing which shows the positional relationship of the groove | channel and fracture | rupture part which concern on one Embodiment of this invention. It is sectional explanatory drawing which shows the positional relationship of the groove | channel and fracture | rupture part which concern on the modification of this invention. It is sectional explanatory drawing which shows the positional relationship of the groove | channel and fracture | rupture part which concern on the other modification of this invention. It is sectional explanatory drawing which shows the positional relationship of the groove | channel and fracture | rupture part which concern on the further another modification of this invention.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an external view of a vehicle seat according to an embodiment of the present invention. FIG. 2 is a perspective view of a seat frame of a vehicle seat according to an embodiment of the present invention. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is an explanatory view showing a state in which the trim cover and the bundling according to the embodiment of the present invention are stitched together at the break portion. FIG. 5 is a perspective view of an attachment member for attaching the guide member according to the embodiment of the present invention to the side frame. FIG. 6 is a plan view of an attachment member for attaching the guide member according to the embodiment of the present invention to the side frame. FIG. 7 is an explanatory cross-sectional view showing the positional relationship between a groove and a fracture portion according to an embodiment of the present invention. FIG. 8 is an explanatory cross-sectional view showing the positional relationship between the groove and the fractured portion according to the modification of the present invention. FIG. 9 is an explanatory cross-sectional view showing the positional relationship between a groove and a fracture portion according to another modification of the present invention. FIG. 10 is an explanatory cross-sectional view showing the positional relationship between a groove and a fracture portion according to still another modification of the present invention.

As shown in FIG. 1, the vehicle seat S as the airbag module equipment seat according to the present embodiment includes a seat back S1, a seating portion S2, and a headrest S3.
The seat back S1 includes a front portion S1a with which the back of the seated person abuts, and a pair of side portions S1b that project from the left and right ends of the front portion S1a toward the front side of the seat and support the side of the seated person from the side. The upper part S1c that is located above the front part S1a and the pair of side parts S1b and constitutes the upper end of the seat back S1, and the lower part of the seat back S1 that is located below the front part S1a and the pair of side parts S1b The lower part S1d to be used and the back part on the back side of the seat back S1 are configured.

  In the vehicle seat S, a seat frame F as shown in FIG. 2 is provided. The seat frame F includes a seat back frame 1 that is a frame of the seat back S1 and a seating frame 2 that is a frame of the seating portion S2. The seating frame 2 and the seat back frame 1 are connected via a reclining mechanism 3. A cushion and a trim cover are provided outside the seat back frame 1 and the seating frame 2 to constitute a seat back S1 and a seating portion S2.

As shown in FIGS. 1 to 3, the seat back S1 includes a seat back frame 1, a cushion pad 5 placed on the seat back frame 1, and a skin material covering the seat back frame 1 and the cushion pads 5 and 5a. The trim cover 4 and the webbing 32 serving as a guide member having one end sewn on the broken portion 40 of the trim cover 4 are used as main components.
As shown in FIGS. 1 and 2, the seat back frame 1 includes a side frame 10 that is spaced apart from the left and right and extends in the vertical direction, an upper frame 21 that connects the upper ends of the side frames 10, and a lower end. It is comprised by frame shape by the lower frame 22 which connects a part.
The upper frame 21 is provided with a pillar support portion 23, and the pillar support portion 23 is provided with a headrest frame (not shown). The headrest S3 is configured by providing a cushion member on the outside of the headrest frame.

The side frame 10 is formed by pressing a sheet metal and is formed of a substantially plate body having a lower width wider than the upper side. As shown in FIG. 2, the substantially flat side plate 11, the front edge portion 12 formed by folding the front end portion of the side plate 11 inward in a U shape, and the rear end portion bent inward in an L shape. And a rear edge portion 13.
The side frame 10 is attached with a locking portion 15 having a locking hole for locking both ends of the erection member 25 as a pair of occupant support members made of S springs that support the occupant from the rear, and an attachment member 50. A pair of mounting holes 16 are provided.
The attachment hole 16 is provided as a vertically long rectangular hole along the inclination of the front edge 12 at a portion near the front edge 12 of the side plate 11.
In the present embodiment, the attachment holes 16 for attaching the inner side bedding 32 are provided only at positions close to the front edge portion 12 of the side frame 10. In the case where both of the side blankets are attached to the side frame 10 using the attachment members 50, it is preferable to provide an attachment hole 16 for attaching the outer side blanket (not shown) at a position close to the rear edge portion 13. .
As shown in FIG. 3, the airbag module 6 is fixed to the side frame 10 on the outer surface of the seat.

The airbag module 6 of the present embodiment is a caseless airbag module that does not have a module case. As shown in FIG. 3, the airbag module 6 includes an inflator 6a, a folded airbag 6b, a retainer 6c that holds the inflator 6a, and a wrap material 6d that wraps the airbag 6b.
The outer peripheral portion of the inflator 6a is fixed to the retainer 6c and the side frame 10 by bolts 18 erected toward the inside of the seat S. The inflator 6a may be fixed to the side frame 10 by an inflator mounting member other than a bolt.

The inflator 6a is disposed in the airbag 6b, and the airbag 6b is deployed in front of the seat S by the gas ejected from the inflator 6a.
The airbag 6b is held in a folded state by a wrap material 6d made of a cloth bag or the like, and the wrap material 6d can be easily broken when the airbag 6b is deployed.
In the present embodiment, the airbag module 6 is configured from a caseless one, but is not limited to this and may be configured as a module case.

  The cushion pad 5 is made of urethane foam, which is a known material for vehicle seats. The cushion pad 5 includes parts other than the rear side and the rear side of the side surface of the seat back frame 1, that is, the front part S1a where the back of the seated person abuts, the front part of the side part S1b where the side of the seated person is located, the seat back S1 It is formed by integral molding of foamed resin so as to constitute the shape of the seating surface comprising the upper part S1c and the lower part S1d.

As shown in FIG. 3, an opening 8 for storing the airbag module 6 is formed in the side portion S <b> 1 b of the cushion pad 5, and a space 7 is formed by the opening 8.
As shown in FIGS. 3 and 5, the cushion pad 5 includes a groove 9 at a position slightly inside the seat side end of the side portion S <b> 1 b of the seat back S <b> 1.
The groove 9 is continuously formed in the sheet vertical direction at a position slightly inward of the sheet from the sheet side end of the side portion S1b at a position along the extending direction of the stitching portion 44 when the trim cover 4 is covered. . The groove 9 is deeply formed only in the portion facing the stitched portion 44 and facing the portion where the webbing 32 is stitched.
FIG. 3 shows a state in which the airbag module 6 is disposed in the space 7. Of the pair of side portions S <b> 1 b, the side where the airbag module 6 is not disposed is formed in the shape of the space 7. A cushion material (not shown) is fitted.
The cushion pad 5 includes a symmetrical outer shape including a groove 9 and a longitudinal section passing through the center in the seat width direction. By configuring in this way, the same cushion pad 5 can be used for both the left and right steering vehicles.

The trim cover 4 is made of a known material, and three layers of a not-illustrated skin, a foam material made of polyurethane foam and the like, and a film as a barrier layer are laminated and bonded to each other, thereby integrating the trim cover 4. It is configured as a cloth-like body. As shown in FIGS. 3 and 4, the trim cover 4 sews a front gusset portion 41 covering the left and right bank surfaces from the seat surface center and a side gusset portion 42 extending from the circumferential side surface to the back surface with a stitching portion 44. Further, the rear gusset portion (not shown) is sewn to the end portion of the side gusset portion 42 on the opposite side of the front gusset portion 41 so as to be sewn into a bag shape.
A stitching portion 44 is formed at the apex bulging at the bank portion of the front gusset portion 41 and the side gusset portion 42, and a breaking portion 40 is formed at a part of the sheet in the vertical direction. The breaking portion 40 is sewn to each other so that the ends of the front gusset portion 41 and the side gusset portion 42 can be torn by the tensile force due to the inflation of the airbag while maintaining the strength that can withstand normal usability. Yes.

As shown in FIG. 4, the webbing 32 is co-sewn on the breaking portion 40.
The force cloth 32 is made of a cloth-like material having small stretchability. The webbing 32 is an inner side webbing drawn from the breaking part 40 to the inside of the seat of the airbag module 6 through the front of the airbag module 6, and transmits stress due to the inflation of the airbag to the breaking part 40. The cushion module 5 arranged in front of and inside the seat of the airbag module 6 serves to protect the cushion pad 5. The force cloth 32 corresponds to the guide member in the claims.

As shown in FIG. 4, the force cloth 32 is made of a substantially rectangular cloth. A plurality of attachment portions 36 for attaching the trim plate 37 projecting in a rectangular shape are provided at both ends on the side 35 facing the fracture portion 40.
The trim plate 37 is a rectangular plate made of hard resin. The trim plate 37 is used to maintain the shape of the end of the attachment portion 36 of the webbing 32.

As shown in FIG. 3, the force cloth 32 is drawn into the space 7 from the breaking portion 40. The trim plate 37 fixed to the attachment portion 36 of the force cloth 32 is engaged with the attachment hole 16 of the side frame 10 via the attachment member 50.
In the present embodiment, since the outer side blanket is not provided, but only the inner side blanket 32 is provided, the size of the stitched portion formed by stitching at the breaking portion 40 is reduced, and the groove 9 is formed. Can be made narrower and shallower. As a result, it is possible to suppress the shape of the groove 9 and the fractured portion 40 from affecting the appearance of the trim cover 4.

The mounting member 50 is integrally molded from a hard resin, and as shown in FIG. 5, a holding part 51 having a shape in which a periphery of one side of the hollow rectangular parallelepiped is cut out, and a reverse side of the cut out side of the holding part 51. And a plate-like flange portion 52 continuously projecting from the side and projecting in all directions.
The holding portion 51 includes a front wall 53, a horizontal wall 54, a rear wall 55, a horizontal wall 56, a ceiling wall 57 that stands vertically from the end of the front wall 53 on the opposite side to the flange portion 52, and a horizontal wall. A partition wall 58 that bridges the wall 54 and the horizontal wall 56 and is parallel to the front wall 53 and the rear wall 55 is provided.

A space surrounded by the front wall 53, the horizontal wall 54, the rear wall 55, the horizontal wall 56, and the top wall 57 is a holding space 59 for locking the trim plate 37 inside. The holding space 59 is divided by a partition wall 58 into a front space 59a and a rear space 59b.
When the attachment member 50 is attached to the right side frame 10 of the seat S, the horizontal wall 54 is located above and the horizontal wall 56 is located below, and the attachment member 50 is attached to the left side frame 10 of the seat S. When the horizontal wall 54 is used, the horizontal wall 54 is positioned below and the horizontal wall 56 is positioned above.

A slit 55 s is formed at the center of the rear wall 55 in the vertical direction. The slit 55s is continuous with the slit 52s provided at the center of the rear portion of the flange portion 52, and the rear wall 55 and the rear portion of the flange portion 52 are divided into two at the center by the slits 55s and 52s. ing. The slits 55 s and 52 s are used for inserting the webbing 32 into the holding space 59.
As shown in FIG. 5, protrusions 60 are formed on both sides of the slit 55 s on the outer surface of the rear wall 55 on the rear side of the seat, and the edge of the mounting hole 16 is between the protrusion 60 and the flange portion 52. It is possible to suppress the attachment member 50 from coming out of the attachment hole 16 by sandwiching the portion.

As shown in FIG. 6, the partition wall 58 and the front wall 53 are connected by a bridging portion 61 at an end portion outside the seat. The bridging portion 61 serves as a retaining member that prevents the trim plate 37 and the end portion of the webbing 32 inserted into the holding space 59 from slipping out of the holding space 59.
A protrusion 57a protruding toward the front space 59a is provided at the tip of the inner surface of the top wall 57 on the rear wall 55 side. The protrusion 57a is pulled out of the front space 59a when the trim plate 37 inserted into the front space 59a receives a pulling force out of the front space 59a via the webbing 32 when the airbag 6b is inflated. It serves as a retaining mechanism that suppresses

FIG. 3 is a cross-sectional view of the state in which the end portion of the force cloth 32 is attached to the side plate 11 of the side frame 10 via the attachment member 50.
The mounting member 50 has a long formed portion of the flange portion 52 forward, and the outer surface of the end portion on the flange portion 52 side of the holding portion 51 is brought into contact with the inner surface of the mounting hole 16 of the side frame 10. 16 is inserted. At this time, the edge of the rear portion of the mounting hole 16 is sandwiched between the flange portion 52 and the protrusion 60.
The trim plate 37 is held in the front space 59a with the trim plate 37 facing the front surface of the partition wall 58 in a state where the trim plate 37 is stitched to the end portion of the force cloth 32. The end portions of the trim plate 37 and the webbing 32 are in contact with the inner surface of the bridging portion 61.
The force cloth 32 passes between the partition wall 58 and the top wall 57, enters the rear space 59b, passes through the opening on the flange portion 52 side of the rear space 59b, and is led out of the attachment member 50. Yes.

The positional relationship between the groove 9 of the cushion pad 5 and the fractured portion 40 in a state where the seat back S1 is assembled is as shown in FIG.
FIG. 7 shows a cross section in a plane perpendicular to the extending direction of the groove 9. The groove 9 is formed at the deepest bottom portion 9a in the direction perpendicular to the extending direction, and on the inner side in the sheet width direction than the bottom portion 9a, and between the bottom portion 9a and the end portion 9b on the inner side in the sheet width direction of the groove 9. An inclined surface 9c as an inclined surface gently inclined continuously so as to connect, and an inclined surface 9e as an inclined surface gently inclined continuously so as to connect between the end portion 9d of the groove 9 on the outer side in the sheet width direction; It is equipped with.
As shown in FIG. 7, the bottom portion 9 a is composed of a flat portion extending perpendicularly to the extending direction of the groove 9.
Since the groove 9 is deeply formed only in the region facing the portion where the webbing 32 is stitched, the bottom 9a is shallow in the portion other than the region facing the portion where the webbing 32 is stitched.

In the state in which the seat back S1 is assembled, if the portion where the front gusset portion 41 and the side gusset portion 42 are in contact with each other by stitching is the center 40c of the fracture portion 40, the center 40c is the bottom portion that is the center of the groove 9 It is shifted from the position facing 9a to the outer side in the sheet width direction, which is the side where the wadding is not attached, and faces the slope 9e. Therefore, the end portion of the force cloth 32 and the end portion side of the front gusset portion 41 to which the force cloth 32 is sewn are opposed to the bottom portion 9a.
The groove 9 may be formed in a curved shape in which the inclined surface 9c facing the side to which the buff 32 is attached is not flat but convex on the opposite side of the surface of the cushion pad 5. In addition, the groove 9 may be formed such that the inclined surface 9c facing the side where the buff 32 is attached is longer than the other inclined surface 9e.

  In the present embodiment, the groove 9 is provided at a position facing the fracture portion 40 on the surface of the cushion pad 5, but instead of providing the groove 9, the end of the side gusset portion 42 on the surface of the cushion pad 5. The end portion of the side gusset portion 42 at the fracture portion 40 is made so that the hardness of the portion where the end portion of the front gusset portion 41 and the end portion of the force cloth 32 face each other is lower than the hardness of the portion where the portions oppose each other. The surface pressure received by the cushion pad 5 may be lower than the surface pressure received by the cushion pad 5 from the end portion of the front gusset portion 41 and the end portion of the webbing 32. Specifically, a cushion pad having a low hardness may be provided on a portion of the surface of the cushion pad 5 where the end portion of the front gusset portion 41 and the end portion of the buff 32 face each other.

In the present embodiment, the inner side blanket 32 is provided only on the front gusset portion 41 side, but as an alternative, as shown in FIG. 8, the inner side blanket 32 and the inner side blanket 32 are provided. It may be provided with a thinner outer fabric 31.
The outer side webbing 31 of this example is stitched to the opposite surface of the front side gusset portion 41 on the end side of the side gusset portion 42 at the breaking portion 40. A J hook (not shown) for locking to the rear edge portion 13 of the side frame 10 is fixed to the end of the force cloth 31 on the opposite side to the breaking portion 40.
The baffle 31 is drawn into the space 7 from the breakage portion 40 between the cushion pad 5 and the side gusset portion 42, passes between the airbag module 6 and the cushion pad 5 a, and the rear of the side frame 10. A J hook (not shown) is fixed to the edge 13 by being locked.

  In the state in which the seat back S1 is assembled, the center 40c of the breaking portion 40 is closer to the side gusset portion 42 where the thinner webbing 31 is sewn than the position facing the bottom portion 9a that is the center of the groove 9. Is shifted outward in the sheet width direction, and faces the inclined surface 9e. Accordingly, the end portion of the thicker webbing 32 and the end side of the front gusset portion 41 to which the webbing 32 is sewn are opposed to the bottom 9a.

As another modified example of the present invention, as shown in FIG. 9, only the outer side blanket 31 ′ may be provided without the inner side blanket.
The outer side webbing 31 ′ in this example has the same configuration as the webbing 31 shown in FIG. 8 except that the webbing 31 ′ is thicker than the webbing 31 shown in FIG. 8.

  In the state in which the seat back S1 is assembled, the center 40c of the fractured portion 40 is located on the inner side in the seat width direction, which is the side where the bundling is not attached, from the position facing the bottom portion 9a that is the center of the groove 9. It has shifted | deviated and is facing the slope 9c. Accordingly, the end portion of the force cloth 31 ′ and the end portion side of the side gusset portion 42 to which the force cloth 31 ′ is sewn are opposed to the bottom portion 9 a.

As yet another modification of the present invention, as shown in FIG. 10, an outer-side force cloth 31 ′ and an inner-side force cloth 32 ′ thinner than the outer-side force cloth 31 ′ may be provided. .
The outer webbing 31 'in this example has the same configuration as the webbing 31' shown in FIG. Further, the inner side force cloth 32 ′ of this example has the same configuration as that of the force cloth 32 of FIG. 8 except that the inner force cloth 32 ′ is thinner than the force cloth 32.

  In the state in which the seat back S1 is assembled, the front gusset portion 41 in which the center 40c of the breaking portion 40 is sewn with the thinner webbing 32 'than the position facing the bottom portion 9a that is the center of the groove 9. It is shifted to the inner side in the sheet width direction, and is opposed to the inclined surface 9c. Therefore, the end portion of the thicker webbing 31 'and the side of the side gusset portion 42 where the webbing 31' is sewn are opposed to the bottom 9a.

S Vehicle Seat S1 Seat Back S1a Front S1b Side S1c Upper S1d Lower S2 Seating Part S3 Headrest F Seat Frame 1 Seat Back Frame 2 Seating Frame 3 Reclining Mechanism 4 Trim Cover 5, 5a Cushion Pad 6 Airbag Module 6a Inflator 6b Airbag 6c Retainer 6d Wrap material 7 Space 8 Opening 9 Groove 9a Bottom 9b, 9d End 9c, 9e Slope 10 Side frame 11 Side plate 12 Front edge 13 Rear edge 15 Locking part 16 Mounting hole 18 Bolt 21 Upper frame 22 Lower frame 23 Pillar support part 25 Construction member 31, 31 ', 32, 32' Force cloth 35 Side 36 Attachment part 37 Trim plate 40 Breaking part 40c Center 41 Front gusset part 42 Side gusset part 44 Suture part 50 Attachment member 51 Holding part 52 flange portion 52s, 55s Slit 53 Front wall 54 Horizontal wall 55 Rear wall 56 Horizontal wall 57 Top wall 57a, 60 Projection 58 Partition wall 59 Holding space 59a Front space 59b Rear space 61 Bridge portion

Claims (9)

A seat frame,
A cushion pad supported by the seat frame;
An airbag module fixed to the seat frame and storing an airbag;
A vehicle seat comprising the airbag module and a skin material covering the cushion pad,
A guide member for guiding a deployment direction of the airbag;
A pair of terminals of the skin material and an end portion of the guide member fixed to one of the pair of terminals are attached to each other, and serve as a starting point for breaking the skin material when the airbag is deployed. It has a breaking part that faces the cushion pad,
The cushion pad includes a recess facing the fracture portion,
The vehicular seat characterized in that, in the recess, a region facing the terminal side to which the guide member is fixed is deeper than a region facing the terminal side to which the guide member is not fixed . A seat frame,
A cushion pad supported by the seat frame;
An airbag module fixed to the seat frame and storing an airbag;
A vehicle seat comprising the airbag module and a skin material covering the cushion pad,
A guide member for guiding a deployment direction of the airbag;
A pair of terminals of the skin material and an end portion of the guide member fixed to one of the pair of terminals are attached to each other, and serve as a starting point for breaking the skin material when the airbag is deployed. It has a breaking part that faces the cushion pad,
Of the cushion pad, from a region where the terminal side of the guide member is not fixed to the opposite, towards the area where the terminal side of the guide member is fixed is opposed, you characterized by low hardness car Amphibious sheet. A seat frame,
A cushion pad supported by the seat frame;
An airbag module fixed to the seat frame and storing an airbag;
A vehicle seat comprising the airbag module and a skin material covering the cushion pad,
A guide member for guiding a deployment direction of the airbag;
A pair of terminals of the skin material and an end portion of the guide member fixed to one of the pair of terminals are attached to each other, and serve as a starting point for breaking the skin material when the airbag is deployed. It has a breaking part that faces the cushion pad,
The cushion pad includes a recess facing the fracture portion,
Center of the recess, said the center of the rupture portion, the position of the guide member fixed the terminal, car dual seat you, characterized in that faces. The surface pressure received by the cushion pad from the skin material and the guide member at the fracture portion is lower on the terminal side where the guide member is fixed than on the terminal side where the guide member is not fixed. The vehicle seat according to any one of claims 1 to 3. The seat frame is a seat back frame that supports the back of the seated person,
The cushion pad includes side portions projecting forward on the outer end side in the seat width direction on both end sides in the seat width direction,
Of the cushion pad, the side of at least left and right, in the position symmetrical around the widthwise center of the sheet, according to claim 1, characterized in that a shape symmetrical with the recess or 3 Symbol mounting of the vehicle seat.   The vehicle seat according to any one of claims 1 to 5, wherein the guide member is an inner guide member that passes through the front of the airbag module and is drawn inward in the seat width direction of the airbag module. . The vehicle seat according to any one of claims 1 , 3, and 5 , wherein the concave portion includes a groove continuously provided along the ends of the pair of skin materials.   The groove has an inclined surface that gradually changes in depth between an end portion of the groove and a deepest bottom portion of the groove, and extends along the ends of the pair of skin materials. The vehicle seat according to claim 7, wherein an end portion of the guide member abuts.   The vehicle seat according to claim 7 or 8, wherein the groove is formed deepest in a region facing the guide member.

Images