JP2011093479A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat for a vehicle capable of excellently deploying a side airbag. <P>SOLUTION: This seat includes a paddle 30 forming the framework of a side support of a seat back 14, a side airbag 24 provided in a folded state to overlap with the paddle 30 in a side surface view at a seat width direction end part and capable of deploying toward the front of the seat, and a side support adjusting mechanism 22 having a paddle driving mechanism 34 capable of displacing the paddle 30 in the seat width direction by receiving adjusting force and displacing the paddle 30 to the seat width direction inside by deployment pressure of the side airbag 20. Waist part outside stay cloth 60LO is provided along a side part 54S of side skin 54 with looseness 64LO in a seat longitudinal direction, has a front end side fixed to seat back skin 54, and a rear end side fixed to a first stay cloth bracket 62 fixed to a seat back frame 14A. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle seat provided with a side airbag device.

  2. Description of the Related Art Conventionally, there has been known a movable side support adjusting device that adjusts a side support by driving a pressing arm that is provided on a vehicle seat and forms a skeleton of a side support in a seat back by an actuator (for example, Patent Documents). 1).

  Further, there is known a vehicle seat in which a side airbag device is built in a side support in a seatback, a backboard is bent to a side door side by a deployment pressure of the side airbag, and the side airbag protrudes to the outside ( For example, see Patent Document 2).

  Further, a technique is known in which both a movable side support adjusting device and a side airbag device (side airbag module) are provided in a seat back of a vehicle seat (see, for example, Patent Document 3). Briefly, as shown in FIG. 10, the side airbag module 120 is fixed to the outside in the seat width direction of the seat back frame 114A constituting the skeleton of the seat back 114 of the vehicle seat 100 by bolts and nuts not shown. Yes. Further, a side support skeleton member 130 forming a skeleton of the side support 118 is supported on the front side in the front-rear direction of the side airbag module 120 via a driving mechanism (not shown). Further, the side portion 115B of the backboard 115 is provided on the outer side in the seat width direction of the side airbag module 120, and the seat front end of the side portion 115B of the backboard 115 extends to a position covering the side airbag module 120 in a side view. Be present. When a side collision of the vehicle (that is unavoidable) is detected by a sensor or the like, the inflator 126 provided in the side airbag module 120 is activated. Then, the gas generated from the inflator 126 is supplied into the side airbag 124, and the side airbag 124 is inflated. And the side part 115B of the back board 115 and the seat width direction outer side part 118B of the side support 118 are pushed open to the seat width direction outer side, and the side airbag 124 is configured to protrude diagonally forward and outward.

JP 2008-220640 A JP-A-8-324372 Special table 2008-541896

  However, in the above prior art, when the door trim or center pillar (B pillar) enters the vehicle interior due to a collision from the side of the vehicle, the side portion 115B of the backboard 115 interferes with the door trim or center pillar. As a result, in particular, the side portion 115B of the backboard cannot be sufficiently pushed outward in the seat width direction, and the opening width for deploying the side airbag 124 becomes narrow.

  In view of the above, the present invention provides a vehicle seat in which a side airbag can be satisfactorily deployed in a vehicle seat in which a movable side support adjusting device and a side airbag device are built in a seat back. For the purpose.

  A vehicle seat according to a first aspect of the present invention is a side support adjustment mechanism that includes a skeleton member that supports a side pad provided on a side support of a seat back, and a skeleton displacement mechanism that displaces the skeleton member in the seat width direction. And a rupture formed in the seat back skin while being inflated by being supplied with gas from the inflator and provided in a folded state so as to overlap the skeleton member in a side view in the seat width direction in the seat back A side airbag device provided on the outer side in the seat width direction of a seatback frame that has a side airbag that is ruptured and bulges forward in the front-rear direction of the seat, and the seatback Inside the seat width direction than the side skin that is a part of the skin and more than the seat back frame An outer tension transmission member that is provided on the outer side in the seat width direction, the front end in the front-rear direction of the seat is fixed to the breaking portion, and has a slack in the front-rear direction of the seat and is less likely to extend than the seat back skin, and is fixed to the seat back frame And a rear side fixing member to which the rear end side in the seat front-rear direction of the tension transmitting member is fixed.

  According to the above configuration, the side support is adjusted by displacing the skeleton member in the seat width direction by the skeleton displacement mechanism. Here, the outer tension transmission member is provided on the inner side in the seat width direction with respect to the side skin that is a part of the seat back skin and on the outer side in the seat width direction with respect to the seat back frame. In addition, the outer tension transmission member is fixed to a rupture portion formed on the seat back skin at the front end in the front-rear direction of the seat, and fixed to a rear fixing member fixed at the rear end in the front-rear direction of the seat. Further, the outer tension transmission member has a slack in the front-rear direction of the seat. Therefore, even if the skeleton member is displaced inward in the sheet width direction, the slackness is extended, so that a large force does not act on the fractured portion and the fractured portion does not break. Moreover, in this vehicle seat, when the side airbag is inflated and deployed, the deployment pressure is concentrated on the fractured portion via the outer tension transmission member, so that the fractured portion can be quickly cleaved.

  A vehicle seat according to a second aspect of the present invention is the vehicle seat according to the first aspect, wherein the rear side fixing member extends at least forward from the front end in the front-rear direction of the inflator in a side view. It is characterized by.

  According to the said structure, the full length of an outer side tension transmission member can be shortened by the part which the rear side fixing member extends. Thereby, when the side airbag is inflated and deployed, even if the deployment pressure of the side airbag acts on the outer tension transmission member, the extension of the outer tension transmission member is suppressed. Therefore, the deployment pressure is easily concentrated on the fractured portion via the outer tension transmission member.

  A vehicle seat according to a third aspect of the present invention is the vehicle seat according to the first or second aspect, wherein the front end in the front-rear direction of the seat is formed on a front side skin that is a part of the seatback skin. And at least a part of the side pad is disposed along the seat width direction outer side of the side pad, and the rear end side in the seat front-rear direction is fixed to the rear fixing member or the rear fixing member. And an inner tension transmission member that is fixed to the inner fixing member that is less likely to extend than the seat back skin.

  According to the above configuration, when the side airbag is inflated and deployed, the deployment pressure is concentrated on the fractured portion even through the inner tension transmission member, so that the fractured portion can be more quickly cleaved.

  A vehicle seat according to a fourth aspect of the present invention is the vehicle seat according to the first or second aspect, wherein the front end in the front-rear direction of the seat is a part of the seat back skin. The seat back skin, wherein the seat back skin is fixed to the rupture portion and disposed along the outer side in the seat width direction of the side pad, and the rear end in the seat front-rear direction is fixed to the front end in the seat front-rear direction of the skeleton member. It is characterized by having an inner tension transmission member that is more difficult to extend.

  According to the said structure, compared with the case where the inner side tension transmission member is arrange | positioned through between the inner surface of a front side skin and a side pad, for example, the full length of an inner side tension transmission member can be shortened. Thereby, when the side airbag is inflated and deployed, even if the deployment pressure of the side airbag acts on the inner tension transmission member, the extension of the inner tension transmission member is suppressed. Therefore, the deployment pressure is easily concentrated on the fractured portion via the inner tension transmission member.

  According to a fifth aspect of the present invention, in the vehicle seat according to the third aspect, the inner tension transmitting member is disposed along the inner side in the seat width direction of the skeleton member. Features.

  According to the above configuration, when the inner tension transmission member is disposed between the inner surface of the seat back skin and the side pad, for example, when the side airbag is inflated and deployed, the side airbag The developing pressure directly acts on the side pads. On the other hand, according to the above configuration, when the side airbag is inflated and deployed, the deployment pressure of the side airbag acts on the inner tension transmission member via the skeleton member. Therefore, compared with the case where the deployment pressure of the side airbag directly acts on the side pad, the deployment pressure is suppressed from being applied to the side pad. As a result, the side pad is prevented from being crushed and the development pressure is easily concentrated on the fractured portion via the inner tension transmitting member.

  A vehicle seat according to a sixth aspect of the present invention is the vehicle seat according to any one of the first to fifth aspects, wherein the slack is front and rear of the seat from the side airbag device in a side view. It is arrange | positioned in the direction front.

  The side airbag is deployed toward the front in the front-rear direction of the seat only after the fracture portion formed in the seat back skin is broken. Therefore, if the slack is arranged in the front-rear direction of the seat from the side airbag device as in the above configuration, the deployment pressure can be quickly transmitted to the slack when the side airbag is inflated and deployed. In other words, since the side airbag device is inflated and deployed in front of the seat, when the slack is disposed behind the side airbag device in the front-rear direction of the seat, it takes time until the deployment pressure is transmitted to the slack. Take it. On the other hand, in the above configuration, since the slackness is disposed forward of the side airbag device in the front-rear direction of the seat, the deployment pressure can be quickly transmitted to the slackness as described above.

  The vehicular seat according to claim 7 is the vehicular seat according to any one of claims 1 to 6, wherein the front and rear ends of the slack sheet in the front-rear direction are elastically applied with tension. It is connected with each other by members.

  According to the said structure, the sum total of the length of the outer side tension transmission member except the length of slack and the length of an elastic member becomes shorter than the length of an outer side tension transmission member. And since tension | tensile_strength is provided to the elastic member, the outer side tension transmission member of the part except a slack is pulled by the elastic member.

  The vehicle seat according to an eighth aspect of the present invention is the vehicle seat according to any one of the first to seventh aspects, wherein the front-rear direction front end portion of the rear fixing member is the skeleton member. Is arranged in parallel with the side skin when it is displaced maximum inward in the sheet width direction by the skeleton displacement mechanism.

  According to the above configuration, when the skeleton member is displaced maximum inward in the seat width direction by the skeleton displacement mechanism, the front end portion in the seat front-rear direction of the rear side fixing member is disposed in parallel with the side portion of the seat back skin. Therefore, the side part of the seat back skin and the front end part in the front-rear direction of the rear fixing member do not interfere with each other.

  The vehicle seat according to the invention described in claim 9 is the vehicle seat according to any one of claims 1 to 8, in a side view, in the front-rear direction front end of the rear fixing member, The back end in the seat width direction and the front end in the seat front-rear direction of the backboard provided at the rear end of the seat back are at the same position.

  When an occupant gets on and off the vehicle, the occupant's hand may touch the outer edge of the backboard in the seat width direction. However, according to the above configuration, the front end in the seat front-rear direction of the rear fixing member and the outer end in the seat width direction and the front end in the front-rear direction of the backboard are in the same position in a side view. Therefore, even if the passenger's hand touches the outer edge of the backboard in the seat width direction, the rear fixing member does not touch the passenger's hand. Therefore, the passenger is not given a foreign object feeling.

  The vehicle seat according to the invention described in claim 10 is the vehicle seat according to any one of claims 5 to 9, wherein the inner tension transmission member is provided behind the frame member in the longitudinal direction of the seat. A slack is provided behind the end.

  For example, when a side support adjusting mechanism is provided on a seat of a small vehicle, the seat width of the side support may be narrower than that of a large vehicle. Therefore, in consideration of the opening width for deploying the side airbag, it is necessary to increase the displacement in the seat width direction of the skeleton member forming the skeleton of the side support of the seat back. According to the above configuration, even when the skeleton member is displaced inward in the seat width direction by the skeleton displacement mechanism, the inner tension transmission member is provided with a slack behind the rear end in the seat front-rear direction of the skeleton member. As a result, when the displacement in the sheet width direction is large, even if the inner tension transmitting member is pulled along with the displacement of the skeleton member toward the inner side in the sheet width direction, the slackness is extended and absorbed. Acts to prevent the fractured portion from breaking.

  The vehicle seat according to an eleventh aspect of the present invention is the vehicle seat according to any one of the first to tenth aspects, wherein when the deployment pressure of the side airbag acts, It has a skeletal movable structure for retracting at least a part or all of the skeleton member including the outer portion in the sheet width direction to the inside in the sheet width direction.

  According to the above configuration, when the deployment pressure of the side airbag acts on the skeleton member, the skeleton member is easily displaced inward in the seat width direction.

  As described above, in the vehicle seat according to the first aspect of the present invention, in the vehicle seat in which the movable side support adjusting device and the side airbag device are built in the seat back, the side airbag is improved. It has an excellent effect that it can be developed.

  Further, in the vehicle seat according to the second aspect of the present invention, the deployment performance of the side airbag is improved as compared with the case where the rear side fixing member is located rearward from the front end in the front-rear direction of the inflator in a side view. It has an excellent effect of being able to.

  In addition, the vehicle seat according to the third aspect of the present invention has an excellent effect that the deployment performance of the side airbag can be improved as compared with the case where only the outer tension transmission member is provided.

  In the vehicle seat according to the fourth and fifth aspects of the present invention, the inner tension transmission member passes between the outer side in the seat width direction of the front side portion of the seat back skin and the inner side in the seat width direction of the side pad. Compared with the case where it arrange | positions, it has the outstanding effect that the expansion | deployment performance of a side airbag can be improved.

  Further, the vehicle seat according to the present invention according to claim 6 has an excellent effect that the deployment performance of the side airbag can be improved as compared with the case where the slack is disposed rearward in the front-rear direction of the seat from the side airbag device. Have

  Moreover, the vehicle seat according to the seventh aspect of the present invention has an excellent effect that slack is absorbed by the elastic member.

  In addition, the vehicle seat according to the present invention according to claim 8 is excellent in that the appearance shape of the seat back skin can be favorably maintained when the skeleton member is displaced maximum inward in the seat width direction by the skeleton displacement mechanism. Has an effect.

  In addition, the vehicle seat according to the present invention according to claim 9 has an excellent effect that the occupant's hand feeling can be kept good.

  Further, the vehicle seat according to the present invention described in claim 10 has an excellent effect that the side airbag can be satisfactorily deployed even if the seat is a small vehicle seat.

  In addition, the vehicle seat according to the present invention described in claim 11 has an excellent effect that the deployment of the side airbag is prevented or suppressed by the skeleton member.

It is bottom sectional drawing which expands and shows the expansion | deployment state of the side airbag which comprises the vehicle seat which concerns on this embodiment. It is bottom sectional drawing which expands and shows the side support which comprises the vehicle seat which concerns on this embodiment. It is bottom sectional drawing which expands and shows the adjustment state of the side support which comprises the vehicle seat which concerns on this embodiment. It is a perspective view showing a schematic structure of a vehicular seat concerning this embodiment. FIG. 5 is an enlarged bottom cross-sectional view taken along line 5-5 in FIG. 4. It is a schematic side view which shows the deployment state of the side airbag which comprises the vehicle seat which concerns on this embodiment. It is the perspective view which looked at the side in which the side airbag was provided among the seat width direction side parts of the vehicular seat concerning this embodiment from the back. FIG. 5 is a bottom cross-sectional view corresponding to FIG. 2, showing an enlarged side support that constitutes a vehicle seat according to a first modification of the present embodiment. FIG. 6 is a bottom cross-sectional view corresponding to FIG. 2, showing an enlarged side support that constitutes a vehicle seat according to a second modification of the present embodiment. It is bottom sectional drawing which expands and shows schematic structure of the side support of the conventional vehicle seat which provided both the movable side support adjustment apparatus and the side airbag apparatus.

  A vehicle seat 10 according to an embodiment of the present invention and a modification thereof will be described with reference to FIGS. In addition, arrow FR, arrow UP, arrow RH, and arrow LH appropriately described in each figure are the right side that is one side of the forward direction (traveling direction), the upward direction, and the vehicle width direction of the vehicle to which the vehicle seat 10 is applied, respectively. The left side, which is the other side, is shown, corresponding to the forward and backward direction of the seat, the upward and downward direction of the seat, and the right and left sides of the seat width direction. Hereinafter, “seat front-rear direction front”, “seat front-rear direction rear”, “seat front-rear direction front”, “seat front-rear direction rear” are simply “seat front”, “seat rear”, “seat front”, “seat It is called “rear side”. Also, “outside in the sheet width direction”, “inside in the sheet width direction”, “outer edge in the sheet width direction”, “inner end in the sheet width direction”, “outward in the sheet width direction”, “inward in the sheet width direction” These are referred to as “sheet outside”, “sheet inside”, “sheet outer edge”, “sheet inner edge”, “sheet outward”, and “sheet inward”. Furthermore, “upper sheet in the vertical direction” and “lower sheet in the vertical direction” are simply referred to as “upper sheet” and “lower sheet”, respectively.

  First, a schematic configuration of the vehicle seat 10 of the present embodiment will be described.

  FIG. 4 is a perspective view showing a schematic overall configuration of the vehicle seat 10. Here, FIG. 4 shows a driver seat in a left-hand drive vehicle. FIG. 5 is a bottom sectional view taken along line 5-5 shown in FIG. As shown in FIG. 4, the vehicle seat 10 includes a seat cushion 12 on which a vehicle occupant is seated, and a seat back 14 having a lower end connected to the seat rear end side of the seat cushion 12. ing.

  As shown in FIG. 5, the seat back 14 includes a backrest 16 that supports the upper body of the occupant from the rear of the seat, and a pair of left and right side supports 18 that protrude forward from the both ends of the backrest 16 in the seat width direction. . The pair of left and right side supports 18 support the occupant's upper body from the side.

  FIG. 2 shows a bottom cross-sectional view taken along line 2-2 shown in FIG. 4 or line 2-2 shown in FIG. As shown in FIG. 2, the seat back 14 is configured by supporting a cushion material 36 and a seat back skin 54 described later on a seat back frame (hereinafter simply referred to as a frame) 14 </ b> A. It is covered.

  As shown in FIG. 5, a side airbag module 20 (side airbag device) and a side support adjusting mechanism 22 are built in the seat back 14 constituting the vehicle seat 10. The side airbag module 20 and the side support adjusting mechanism 22 are supported by a seat back frame 14 </ b> A constituting the seat back 14. The side airbag module 20 is disposed in a side support 18 outside the seat in the seat back 14. The side support adjusting mechanism 22 is configured to adjust a pair of left and right side supports 18 (angle and interval).

  As shown in FIG. 2, the side airbag module 20 is in a folded state, receives a gas supply, is inflated and deployed toward the front of the seat, and is supplied to the side airbag 24 by being actuated. An inflator 26 that generates gas and a cover material 28 that covers the side airbag 24 and the inflator 26 in a folded state are configured. In the present embodiment, the inflator 26 is provided in a posture along the seat vertical direction in the rear part of the rear side of the seat in the folded side airbag 24. The inflator 26 is actuated when a side collision (that is unavoidable) of a vehicle to which the vehicle seat 10 is applied is detected.

  Thereby, the side airbag module 20 is configured such that the gas generated from the inflator 26 is directly supplied to the side airbag 24. Further, the side airbag module 20 is fastened to a side frame portion 14B extending in the seat vertical direction outside the seat in the frame 14A by a stud bolt (not shown) and a nut (not shown) provided in the inflator 26. The cover material 28 is easily broken as the side airbag 24 is inflated.

  As shown in FIG. 6, the side airbag 24 is deployed so as to cover the region from the waist L to the chest C of the seated occupant P of the vehicle seat 10 in the seat vertical direction (side view). ing.

  In the example of FIG. 6, the deployed side airbag 24 is partitioned into upper and lower chambers 24U and 24L in a side view. In this example, the internal pressure is kept higher in the lower chamber 24L corresponding to the waist L of the seated occupant P than in the upper chamber 24U corresponding to the chest C of the seated occupant P. Since the side airbag 24 of the upper and lower divided structure (two-chamber structure) has a known configuration, detailed description thereof is omitted.

  Next, the side support adjusting mechanism 22 in this embodiment will be described. In the present embodiment, the angle of the side support 18 is adjusted by applying an adjustment force by the paddle drive mechanism 34 as a skeleton displacement mechanism.

  The side support adjusting mechanism 22 shown in FIG. 5 has a pair of left and right paddles 30 as skeleton members, and the left and right paddles 30 form the skeleton portions of the left and right side supports 18. In the vehicle seat 10, the side support 18 is adjusted by displacing the paddle 30 in the seat width direction. Specifically, as shown in FIGS. 2 and 3, the paddle 30 supports a side pad 36 </ b> A, which is a part constituting the side support 18 in the cushion material 36, from outside the seat and from behind the seat. The restraining state of the seated occupant P (see FIG. 6) by the left and right side supports 18 (position, posture, shape) is adjusted by displacing the paddle 30 in the seat width direction.

  As shown in FIG. 4, the paddle 30 in the present embodiment is disposed at an intermediate portion in the vertical direction of the side support 18 (seat back 14). As shown in FIG. 6, the left and right paddles 30 are disposed in a region including the abdomen (between the waist L and the chest C) of the seated occupant P of the vehicle seat 10. That is, the paddle 30 is disposed so as to overlap the side airbag module 20 (the folded side airbag 24) in the seat vertical direction. Further, as shown in FIGS. 2 and 3, the paddle 30 has a portion that protrudes to the outside of the seat with respect to the side frame portion 14 </ b> B within the adjustment range of the left and right side supports 18, and this portion of the side airbag module 20. The configuration is located in front of the seat.

  More specifically, as shown in FIG. 4, the paddle 30 includes a cushion support portion 30 </ b> C in the front-rear direction of the seat that supports the side pad 36 </ b> A (see FIG. 2), and a paddle drive mechanism as a skeleton displacement mechanism described later. 34 (see FIG. 5), and a skeleton displacement mechanism support portion 30D that is positioned behind the seat with respect to the cushion support portion 30C. As shown in FIG. 6, the cushion support portion 30C of the paddle 30 includes an upper protruding portion 30CU protruding upward from substantially the same height as the upper end of the skeleton displacement mechanism support portion 30D (see FIG. 5), and a skeleton displacement mechanism. The lower part of the support part 30D is configured to include a downward projecting part 30CL projecting downward from substantially the same height.

  As shown in FIG. 5, the side support adjusting mechanism 22 displaces the paddle 30 in the seat width direction in response to the adjusting force from the power unit 32 that generates adjusting force for adjusting the left and right side supports 18. It further includes a paddle drive mechanism 34 as a skeleton displacement mechanism to be moved, and a return spring 35 as a biasing member that displaces the paddle 30 to a predetermined position. The side support adjustment mechanism 22 is configured to adjust the side support 18 against the urging force of the return spring 35 by converting the adjustment force of the power unit 32 into the displacement force of the paddle 30 by the paddle drive mechanism 34. . Note that the left and right paddles 30 and the paddle drive mechanism 34 are basically symmetrically configured.

  The paddle drive mechanism 34 has a bracket 38 that is fixed to the inside of the seat with respect to the side frame portion 14B. In the bracket 38, a long slot (guide groove) 38A that is long along the sheet width direction is formed in the seat inner portion, and a long slot (guide groove) 38B that is long along the seat front-rear direction is formed in the seat outer portion. ing. In each long hole 38A, guide pins 30A and 30B projecting from the rear end portion of the paddle 30 are slidably inserted. In the paddle 30, the guide pins 30 </ b> A and 30 </ b> B are displaced with respect to the bracket 38 so that the cushion support portion 30 </ b> C in the seat front-rear direction supporting the side pad 36 </ b> A (see FIG. 2) is displaced in the seat width direction. It has become.

  The return spring 35 is a tension coil spring that is stretched between the cushion support portion 30C of the paddle 30 and the side frame portion 14B. The paddle 30 is held at a position where the guide pin 30A comes into contact with the inner end of the long hole 38A and the guide pin 30B comes into contact with the rear end of the long hole 38B by the urging force of the return spring 35. This position is an initial position where the cushion support portion 30C of the paddle 30 is located on the outermost side of the seat and on the rear end side of the seat, and in the state where the left and right paddles 30 are located at the initial position, the distance between the left and right side supports 18 is set. Is the most widespread.

  The paddle driving mechanism 34 constituting the side support adjusting mechanism 22 is configured to displace the paddle 30 against the urging force of the return spring 35 by pressing the guide pin 30A to the outside of the seat. As a result, the paddle 30 is guided by the elongated holes 38A and 38B of the bracket 38 by the guide pins 30A and 30B, and the cushion support portion 30C is displaced to the inner side of the seat (in the direction of arrow A, see FIG. 2) (posture). Change) (see FIG. 3).

  The paddle drive mechanism 34 is configured to convert the adjustment force of the power unit 32 into a pressing force with respect to the guide pin 30 </ b> A by the operation cable 40. As shown in FIG. 5, the operation cable 40 is a covered cable mainly composed of an inner cable 42 and an outer cable 44 that covers a portion excluding both ends of the inner cable 42. The seat outer end 42A of the inner cable 42 is locked to the bracket 38 (or the side frame portion 14B) on the seat outer side than the seat outer end in the long hole 38A. The inner end 42B of the inner cable 42 is pulled inside the seat by the power portion 32 as will be described later.

  On the other hand, the outer cable 44 is brought into contact with the guide pins 30A from the inside of the seat in an unconstrained manner, and the inner end portion of the seat is fixedly supported by the frame 14A via the fixture 46. In FIG. 5, the support structure for the fixture 46 and the frame 14A is not shown. The inner cable 42 penetrates the guide pin 30A in order to secure the contact between the outer cable 44 and the guide pin 30A. As shown in FIG. 5, the operation cable 40 is slack with the paddle 30 positioned at the initial position.

  As a result, in the paddle drive mechanism 34, the inner cable 42 is pulled inwardly of the seat (the side opposite to the side of the paddle 30 to be operated) by pulling the inner end 42B of the inner cable 42 so that the looseness of the outer cable 44 is eliminated and the guide pin 30A is released. Is configured to press outward in the sheet width direction. Further, in the side support adjusting mechanism 22, when the seat inner end 42 </ b> B of the inner cable 42 is displaced outward from the adjusted state of the side support 18 as shown in FIG. 3, the paddle 30 is moved to the initial position side by the urging force of the return spring 35. It is designed to be displaced.

  The power unit 32 includes a motor 48 as a drive source and a cable pulling mechanism 50 that converts the torque of the motor 48 into a pulling force of the inner cable 42 toward the seat inward. The motor 48 is supported by the frame 14A via the bracket 52 (this support structure is not shown), and is an electric motor that can rotate the output shaft 48A along the seat width direction forward and backward around the axis by power feeding. Yes. In the present embodiment, the cable pulling mechanism 50 is a feed screw mechanism that converts the rotation of the output shaft 48A into a linear motion along the sheet width direction.

  Specifically, the cable pulling mechanism 50 includes a screw 50A that is elongated in the sheet width direction and rotated about its own axis by a motor 48, and a screw nut 50B. In the present embodiment, the power unit 32 is shared by the left and right paddles 30 (paddle drive mechanism 34), and the left and right screws 50A and the nuts 50B screwed to these screws are mutually reverse screws. As a result, when the left and right screws 50A are rotated forward by the motor 48, the cable pulling mechanism 50 causes the left and right nuts 50B to be close to each other (displaced inward of the seat), and the left and right screws 50A are rotated reversely by the motor 48. Then, the left and right nuts 50B are separated from each other (displaced outwardly of the seat).

  In the side support adjusting mechanism 22, the seat inner end 42 </ b> B of the inner cable 42 is connected to the left and right nuts 50 </ b> B. Therefore, in the vehicle seat 10, when the screw 50A is rotated forward by the motor 48, the inner cable 42 is pulled and the outer cable 44 presses the guide pin 30A outward in the vehicle width direction, as shown in FIG. The paddle 30 is displaced in front of the seat and inward of the seat. Thereby, as above-mentioned, it is the structure adjusted so that the left and right side support 18 may mutually adjoin. The motor 48 of the power unit 32 rotates the screw 50 </ b> A in the forward and reverse directions in response to an operation of a hand switch (not shown) by the seated occupant P.

  In the vehicle seat described above, the paddle 30 is configured such that the displacement in the direction of arrow A (see FIG. 2) is not restricted by the paddle drive mechanism 34 in which the outer cable 44 is in contact with the guide pin 30A from the inside of the seat. It is said that. For this reason, when a load that can resist the urging force of the return spring 35 is input to the cushion support portion 30C from the rear side of the seat, the paddle 30 resists the urging force of the return spring 35 in the direction of arrow A. (Rotation) is to be displaced. At this time, the inner cable 42 of the operation cable 40 slides with respect to the guide pin 30A or bends between the guide pin 30A and the sheet outer end of the long hole 38A, and the paddle 30 moves in the direction of arrow A. In this configuration, almost no resistance force is generated with respect to the displacement (the generated resistance force is small). Further, the outer cable 44 is configured such that no resistance force is generated against the displacement of the paddle 30 in the arrow A direction because the rear portion of the paddle 30 is separated in accordance with the displacement of the paddle 30 in the arrow A direction.

  The urging force of the return spring 35 is sufficiently smaller than the pressing force (the pressing force based on the deployment pressure) that the side airbag 24 (see FIG. 2) presses the paddle 30 forward of the seat as it is deployed. Therefore, in the vehicle seat 10, when the inflator 26 (see FIG. 2) of the side airbag module 20 is activated, the paddle 30 pressed against the side airbag 24 as shown in FIG. See). In the present embodiment, the paddle driving mechanism 34 (the pressing structure of the guide pin 30A by the outer cable 44 of the operation cable 40) that can drive the paddle 30 in the direction of arrow A while making the paddle 30 unconstrained in the direction of arrow A is movable in the skeleton. Corresponds to the structure.

  Next, the structure which concerns on the principal part of this embodiment is demonstrated.

  In the vehicle seat 10 according to the present embodiment, as shown in FIGS. 2 and 3, a break portion 56 that is torn along with the deployment of the side airbag 24 is formed on the seat back skin 54 constituting the seat back 14. Is formed. More specifically, in the present embodiment, the skin material 54 includes a seat front side portion 54F and a seat side portion 54S. The breaking portion 56 is a sewing portion between the seat front side portion 54F and the seat side portion 54S of the seat back skin 54 along the seat vertical direction, and is disposed at the seat front-rear direction front end and the seat outer end of the side support 18. ing. The rupture load is set so that the sewn portion is ruptured when a tensile force of a predetermined value or more is applied.

  Here, in the side support 18, a webbing 60 is provided as a tension transmission member that receives a deployment pressure based on the inflation and deployment of the side airbag 24 and transmits the deployment pressure to the breaking portion 56. As shown in FIGS. 6 and 7, the webbing 60 is provided on the upper side and the lower side of the sheet in the vertical direction. The webbing provided on the upper side is provided at a height corresponding to the chest C of the seated occupant P. Hereinafter, this blanket is referred to as “chest corresponding blanket 60C”. In addition, the blanches provided on the lower side are provided at a height corresponding to the waist L of the seated occupant P. Hereinafter, this blanket will be referred to as “waist corresponding blanket 60L”. In addition, the force cloth 60 is comprised with the polyester nonwoven fabric, the cotton cloth, etc. with little elongation even if the deployment pressure of the side airbag 24 is received.

  As shown in FIG. 6, the waist corresponding force cloth 60 </ b> L is provided at a height corresponding to the downward projecting portion 30 </ b> CL of the paddle 30 in a side view. That is, a part of the waist-corresponding power cloth 60L is disposed so as to overlap the paddle 30 in a side view. Further, a part of the waist-corresponding power cloth 60L is disposed so as to overlap the side airbag module 20 in a side view. As shown in FIG. 7, the waist corresponding force cloth 60L includes a waist outer force cloth 60LO provided on the seat outer side from the side frame part 14B and a waist inner force cloth 60LI provided on the seat inner side from the side frame part 14B. It is configured.

  Specifically, as shown in FIG. 2, the waist outer force cloth 60LO has one end side sewn to the seat front end 54SF of the seat front end 54S of the side skin 54S and the other end side fixed to the frame 14A. It is latched by the 1st bedding bracket 62 as a rear side fixing member. The seat front side of the waist outer force cloth 60LO is provided along the seat inner side of the side skin 54S. As shown in FIG. 7, a slit-like opening 62CL that opens in the up-down direction of the seat is provided on the seat front end side and the seat lower side of the first baffle bracket 62 to be described later. The other end side of the outer force cloth 60LO is passed, and the other end of the waist outer force cloth 60LO is folded back. The other end of the waist outer force cloth 60LO is sewn to a part of the waist outer force cloth 60LO.

  As shown in FIG. 2, when the paddle 30 is in the initial position (the initial position where the cushion support portion 30C of the paddle 30 is located at the outermost side of the seat and the rear end side of the seat), A slack 64LO that is slackened in the front-rear direction is provided. The length of the slack 64LO is about 40 millimeters, and the overall length of the waist outer baffle 60LO is set to a length that eliminates the slack 64LO when the paddle 30 is displaced to the maximum inside the seat (see FIG. 3). ing. The slack 64LO is provided in front of the seat from the seat front end 15A on the side of the backboard 15, and is provided in front of the seat front end of the inflator 26. Further, the slack 64LO is provided at the outer end of the paddle 30 and behind the front end 30F of the seat. The front and rear ends of the slack 64LO in the front-rear direction are connected to each other by a slack absorbing rubber 66 that is an elastic member to which tension is applied.

  The waist inner force cloth 60LI has one end side sewn to the seat outer end 54FO of the front side skin 54F and the other end side fixed to the first force cloth bracket 62 as a second force as an inner fixing member to be described later. The cloth bracket 68 is locked. The waist inner force cloth 60LI is disposed along the seat outer side of the side pad 36A from the seat outer end 54FO of the front side skin 54F, and between the seat outer side of the side pad 36A and the seat inner side of the paddle 30. It is disposed through and is locked to the second baffle bracket 68. As shown in FIG. 7, a slit-like opening 68L that opens in the up-down direction of the seat is provided on the front end side of the second baffle bracket 68 described later, and the waist inner bundling 60LI is formed in the opening 68L. While the other end is passed, the other end of the waist inner force cloth 60LI is folded back. The other end of the waist inner force cloth 60LI is sewn to a part of the waist inner force cloth 60LI.

  In addition, as shown in FIG. 2, when the paddle 30 is in the initial position, the waist inner force cloth 60LI has the paddle 30 displaced in the seat width direction behind the rear end in the seat front-rear direction. A slack 64LI that can be accommodated is provided.

  As shown in FIG. 6, the chest corresponding webbing 60 </ b> C is disposed above the upper protrusion 30 </ b> CU of the paddle 30 in a side view. In other words, the chest corresponding webbing 60C and the paddle 30 are not disposed so as to overlap in a side view. On the other hand, a part of the chest support cloth 60C is disposed so as to overlap the side airbag module 20 in a side view. As shown in FIG. 7, the chest-corresponding force cloth 60C includes a chest outer force cloth 60CO provided outside the seat from the side frame portion 14B and a chest inner force cloth 60CI provided inside the seat from the side frame portion 14B. It is configured.

  Although the illustration of the chest corresponding force cloth 60C is basically the same as that of the waist corresponding force cloth 60L, illustration thereof is omitted, but one end side of the chest outer force cloth 60CO is sewn to the seat front end 54SF of the side skin 54S. The other end side is locked to a first baffle bracket 62, which will be described later, fixed to the frame 14A. A part of the chest outer force cloth 60CO is provided along the seat inner side of the side skin 54S. As shown in FIG. 7, a slit-like opening 62CU that opens in the up-down direction of the seat is provided on the seat front end side and the seat upper side of the first baffle bracket 62, which will be described later, and a chest portion is provided in the opening 62CU. The other end side of the outer force cloth 60CO is passed, and the other end of the chest outer force cloth 60CO is folded back. The other end of the chest outer force cloth 60CO is sewn to a part of the chest outer force cloth 60CO.

  The chest outer webbing 60CO is provided with a slack when the paddle 30 is in the initial position. The length of the slack is about 15 millimeters, and the total length of the chest outer webbing 60CO is set such that the slack is eliminated when the paddle 30 is displaced to the maximum inside the seat. As shown in FIG. 6, since the chest outer force cloth 60CO is not disposed so as to overlap the paddle 30 in a side view, the length of the slack provided on the chest outer force cloth 60CO is the waist outer force. The length is set shorter than the length of the slack 64LO provided on the cloth 60LO.

  The chest inner force cloth 60CI has one end side sewn to the seat outer end 54FO of the front side skin 54F and the other end side fixed to the first force cloth bracket 62 as a third force cloth as an inner fixing member to be described later. It is locked to a bracket 70 (see FIG. 7). The chest inner webbing 60CI is disposed from the seat width direction outer end 54FO of the front side skin 54F to the outside of the seat of the side pad 36A and through the seat inside of the seat frame 14A, and is engaged with the third webbing bracket 70. It has been stopped. As shown in FIG. 7, a slit-like opening 70U that opens in the up-down direction of the seat is provided on the sheet front end side of a third baffle bracket 70 to be described later. The other end is passed, and the other end of the chest inner webbing 60CI is folded. The other end of the chest inner force cloth 60CI is sewn to a part of the chest inner force cloth 60CI.

  Further, when the paddle 30 is in the initial position, the chest inner webbing 60CI is provided with a slack enough to cope with the displacement of the paddle 30 in the seat width direction.

  As shown in FIG. 2, the first baffle bracket 62 is fixed to the rear end portion of the frame 14 </ b> A and is positioned behind the side airbag module 20 and extends in the seat width direction. 62A, an oblique outer front direction portion 62B extending from the outer end of the seat width direction portion 62A obliquely forward to the front of the seat, and an oblique front direction extending from the front end of the oblique outer front direction portion 62B to the front of the seat diagonally inward. It includes a portion 62C and a front obliquely projecting portion 62D that projects obliquely inward and forward from the inner end of the seat width direction portion 62A. As shown in FIG. 7, the in-slanted front protrusion 62D is provided on the upper side and the lower side of the seat. A side support adjusting mechanism (not shown) is disposed at a position corresponding to the height between the upper oblique front protrusion 62D and the lower oblique front protrusion 62D.

  The length of the first baffle bracket 62 in the seat vertical direction is set to be longer than that of the side airbag module 20, and the side airbag module 20 is covered with the first baffle bracket 62 in a side view. (Not shown). Further, the first baffle bracket 62 is disposed so as to overlap the side airbag module 20 in a side view as shown in FIG. 6, and from the front end of the seat of the inflator 26 as shown in FIG. It extends forward. In other words, the seat front end 62F of the inclining front direction portion 62C is positioned in front of the seat front end of the inflator 26. A chest outer webbing 60CO is locked to the front end side of the front-inclined portion 62C (see FIG. 2) and above the seat. Further, a waist outer force cloth 60LO is locked to the front end side of the inward oblique front direction portion 62C and the seat lower side. Further, as shown in FIG. 3, the obliquely forward portion 62 </ b> C is disposed so as to be parallel to the side skin 54 </ b> S when the paddle 30 is displaced maximum inside the seat by the paddle drive mechanism 34 (see FIG. 5). ing.

  As shown in FIG. 2, the second baffle bracket 68 includes a fixed portion 68A fixed to the front obliquely projecting portion 62D of the first baffle bracket 62, and a seat front from the seat inner end of the fixed portion 68A. It is comprised by the sheet | seat front-back direction part 68B extended. As shown in FIG. 7, the length of the second upholstery bracket 68 in the vertical direction of the seat is set to be longer than the vertical length of the chest supporter 60 C. The front end of the seat front-rear direction portion 68B of the second baffle bracket 68 is located behind the rear end of the side airbag module 20 in a side view. In addition, a slit-shaped opening 68L that opens in the seat vertical direction is provided on the front end side of the seat front-rear direction portion 68B of the second baffle bracket 68, and the waist inner bundling 60LI is passed through the opening 68L. .

  As shown in FIG. 7, the third baffle bracket 70 is the same as the second baffle bracket 68, and is a fixed portion that is fixed to the obliquely forward projecting portion 62 </ b> D of the first baffle bracket 62. 70A and a seat front-rear direction portion 70B extending forward from the seat inner end of the fixed portion 70A. A chest inner webbing 60CI is locked to the front end side of the seat front-rear direction portion 70B.

  Next, the effect | action which concerns on the principal part of this embodiment is demonstrated.

  In the vehicle seat 10 having the above configuration, as shown in FIG. 5, when the seat occupant P (see FIG. 6) operates a hand switch (not shown) to the side where the side support 18 is displaced inward of the seat, the motor 48 causes the screw 50 </ b> A to be moved. Is rotated forward. Then, the left and right nuts 50B are respectively displaced to the inside of the seat, and the inner cable 42 is pulled, so that the outer cable 44 presses the guide pins 30A outward of the seat. As a result, the left and right paddles 30 are displaced in the respective arrow A directions together with the side pads 36A (see FIG. 2) and the seat back skin 54, and the angle of the side support 18 with respect to the backrest 16 is reduced. Narrows.

  Here, as shown in FIG. 2, in the present embodiment, the waist support outer cloth 60 </ b> LO is provided on the side support 18 on the side where the side airbag module 20 is provided in the pair of left and right side supports 18 (see FIG. 5). It is arranged. In addition, a slack 64LO is provided on the waist outer force cloth 60LO. Accordingly, as the left and right paddles 30 are displaced in the direction of arrow A, the angle of the side support 18 with respect to the backrest 16 is reduced, and the distance between the left and right side supports 18 is reduced, the straight line between one end of the waist outer force cloth 60LO and the other end. The distance gets longer. Accordingly, when the paddle 30 is displaced to the maximum inside the seat while the slackness 64LO is eliminated, the slackness 64LO is completely eliminated as shown in FIG. Therefore, even if the paddle 30 is displaced to the inside of the seat by the paddle drive mechanism 34, a large force does not act on the breaking portion (sewing portion) 56 and the breaking portion 56 does not break. When the paddle 30 is displaced to the inside of the seat, as shown in FIG. 3, the waist outer force cloth 60LO interferes with the cover member 28 of the side airbag module 20 and the side airbag module 20 (the side airbag 24 and the cover). The shape of the material 28) is deformed.

  Further, as shown in FIG. 6, the chest outer webbing 60CO is not arranged so as to overlap the paddle 30 in a side view, but the side supports are displaced by the left and right paddles 30 being displaced in the direction of arrow A in FIG. Since the angle of 18 with respect to the backrest 16 is reduced and the distance between the left and right side supports 18 is reduced, the linear distance between one end and the other end of the chest outer force cloth 60CO is increased. Accordingly, when the slack provided on the chest outer force cloth 60CO is eliminated and the paddle 30 is displaced to the maximum inside the seat, the slack is completely eliminated. Therefore, even if the paddle 30 is displaced to the inside of the seat by the paddle drive mechanism 34, a large force does not act on the breaking portion (sewing portion) 56 and the breaking portion 56 does not break.

  Further, as shown in FIG. 2, the waist inner force cloth 60LI has one end side sewn to the seat outer end 54FO of the seat front side portion 54F of the front side skin 54F, and the other end side to the second force cloth bracket 68. It is locked. The waist inner force cloth 60LI is provided with a slack 64LI behind the rear end of the seat of the paddle 30. Therefore, the left and right paddles 30 are displaced in the direction of arrow A, the angle of the side support 18 with respect to the backrest 16 is reduced, and the waist inner force cloth 60LI is pulled as the distance between the left and right side supports 18 is reduced. In particular, in the case of a small vehicle, the length of the side support 18 in the seat width direction may be shorter than that of a large vehicle. Therefore, when both the side support adjusting mechanism 22 and the side airbag module 20 are provided in the seat back 14, even if the displacement amount of the paddle 30 to the seat inner side is the same, the side airbag 24 is deployed. The opening width is different. That is, the larger the length of the side support 18 in the sheet width direction, the larger the opening width. Therefore, in order to satisfactorily deploy the side airbag 24 in a small vehicle, it is necessary to increase the displacement of the paddle 30 in the seat width direction. At this time, if the slack 64LI is provided in the waist inner force cloth 60LI, even if the paddle 30 is displaced in the sheet width direction by the paddle drive mechanism 34 (see FIG. 5), a large force is applied to the breaking portion (sewing portion) 56. Does not break and the broken portion 56 does not break.

  Further, the chest inner webbing 60CI is provided with a slack. As shown in FIG. 6, the chest corresponding webbing 60 </ b> C is disposed at a position higher than the upper protrusion 30 </ b> CU of the paddle 30 in a side view. Accordingly, the left and right paddles 30 in FIG. 2 are displaced in the direction of arrow A, and as the angle of the side support 18 with respect to the backrest 16 decreases and the distance between the left and right side supports 18 decreases, one end and the other end of the chest inner force cloth 60CI. And the straight line distance becomes longer. Accordingly, when the paddle 30 is displaced to the maximum inside the seat while the slack is eliminated, the slack is completely eliminated. Therefore, even if the paddle 30 is displaced to the inside of the seat by the paddle drive mechanism 34 (see FIG. 5), a large force does not act on the breaking portion (sewing portion) 56 and the breaking portion 56 does not break.

  On the other hand, as shown in FIG. 5, when the seat occupant P (see FIG. 6) operates a hand switch (not shown) to the side where the side support 18 is displaced outward of the seat, the left and right nuts 50B are respectively displaced to the outside of the seat. Thus, the operation cable 40 is loosened, and the left and right paddles 30 are displaced toward the initial position by the urging force of the return spring 35, respectively. Thereby, the angle with respect to the backrest 16 of the side support 18 becomes large, and the space | interval of the right and left side support 18 spreads. As a result, the linear distance between one end and the other end of the waist outer force cloth 60LO and the chest outer force cloth 60CO is shortened. Accordingly, when the waist outer force cloth 60LO and the chest outer force cloth 60CO start to loosen and the paddle 30 is returned to the initial position, a slack 64LO is formed in the waist outer force cloth 60LO, and the chest outer force cloth 60CO also The slack is formed (see FIG. 2 for the state in which the slack 64LO is formed on the waist outer webbing 60LO). Further, slack is also formed on the waist inner force cloth 60LI and the chest inner force cloth 60CI.

  Next, the operation when the side airbag device (side airbag module 20) operates will be described.

  When a side collision to the side (near side) of the vehicle to which the vehicle seat 10 is applied is detected, the inflator of the side airbag module 20 is activated. Then, the gas generated from the inflator 26 is supplied into the side airbag 24, and the side airbag 24 is inflated and deployed.

  Here, in the present embodiment, as shown in FIG. 6, the deployed side airbag 24 includes an upper chamber 24U corresponding to the chest C of the seated occupant P and a lower side corresponding to the waist L of the seated occupant P. And a chamber 24L. Therefore, in FIG. 2, as the side airbag 24 is inflated and deployed, the lower chamber 24L and the upper chamber 24U of the side airbag 24 are respectively connected to the waist corresponding force cloth 60L and the chest corresponding force via the cover member 28. Abuts on the cloth 60C. Then, the waist corresponding force cloth 60L and the chest corresponding force cloth 60C are pressed by the deployment pressure of the side airbag 24. One end of the waist corresponding force cloth 60L and the chest corresponding force cloth 60C is fixed to the seat back skin 54, and the other end is a force cloth bracket (first force cloth bracket 62, second force cloth bracket 68, third force). Since one of the cloth brackets 70 is engaged with each other, tension is applied to the waist corresponding force cloth 60L and the chest corresponding force cloth 60C by the deployment pressure of the side airbag 24. Thereafter, the slack 64LO provided on the waist outer force cloth 60LO, the slack 64LI provided on the waist inner force cloth 60LI, the slack provided on the chest outer force cloth 60CO, and the slack provided on the chest inner force cloth 60CI It is eliminated so as to follow the deployed shape of the airbag 24. Since the chest corresponding force cloth 60C and the waist corresponding force cloth 60L are made of a material with little elongation, the extension of the seat back skin 54 is suppressed, and the broken portion 56 has a chest corresponding force cloth 60C and a waist corresponding force cloth. The deployment pressure of the side airbag 24 is transmitted through 60L without loss. As a result, stress concentrates on the fracture portion 56.

  In addition, the slack 64LO provided on the waist outer force cloth 60LO is disposed in front of the seat from the seat front end 15A on the side portion of the backboard 15, and is disposed in front of the seat front end of the inflator 26. Therefore, when the side airbag 24 is inflated and deployed, the slack 64LO provided on the waist outer force cloth 60LO is disposed behind the side airbag module 20, or from the seat front end 15A on the side of the backboard 15. The deployment pressure can be transmitted more quickly than in the case where it is arranged behind the seat. Thereby, the side airbag 24 can be rapidly deployed.

  In addition, as shown in FIG. 2, the first bedding bracket 62 extends forward from the seat front end of the inflator 26. Therefore, when the side airbag 24 is inflated and deployed, a part of the side airbag 24 and the first baffle bracket 62 come into contact with each other via the cover member 28. Therefore, the first baffle bracket 62 suppresses the expansion of a part of the side airbag 24 in the seat width direction, and the side airbag 24 is easily deployed forward of the seat as shown in FIG.

  Further, the entire length of the waist outer force cloth 60LO and the chest outer force cloth 60CO is shortened by the extent that the first force cloth bracket 62 extends. Therefore, when the waist outer force cloth 60LO and the chest outer force cloth 60CO receive the deployment pressure of the side airbag 24, the stretch of the waist outer force cloth 60LO and the chest outer force cloth 60CO is suppressed. Therefore, the development pressure is transmitted to the breaking portion 56 provided in the seat back skin 54, and stress is easily concentrated on the breaking portion 56.

  Further, the oblique front portion 62C of the first baffle bracket 62 is arranged so as to be parallel to the side skin 54S when the paddle 30 is displaced maximum inside the seat by the paddle drive mechanism 34 (see FIG. 5). (See FIG. 3). As a result, when the paddle 30 is displaced to the maximum inside the seat by the paddle drive mechanism 34, the front end of the oblique front direction portion 62C of the first baffle bracket 62 and the seat back skin 54 do not interfere strongly. Therefore, the appearance shape of the seat back skin 54 can be kept good. It should be noted that the diagonally forward portion 62C of the first baffle bracket 62 is arranged so as to be parallel to the side skin 54S when the paddle 30 is displaced maximum inside the seat by the paddle drive mechanism 34 (see FIG. 5). Even if not, it is included in parallel if it is within a range in which the front end of the diagonally forward portion 62C of the first baffle bracket 62 and the seat back skin 54 do not interfere strongly.

  On the other hand, as shown in FIG. 2, the waist inner force cloth 60LI is disposed along the seat outer side of the side pad 36A and passes between the seat outer side of the side pad 36A and the seat inner side of the paddle 30. The one end side is sewn to the seat outer end 54FO of the front side skin 54F, and the other end side is locked to the second bedding bracket 68. Therefore, when the side airbag 24 is inflated and deployed, the deployment pressure of the side airbag 24 acts on the waist inner force cloth 60LI via the paddle 30. By the way, when the lumbar region inner webbing 60LI is disposed, for example, between the inner surface of the front side skin 54F and the side pad 36A, when the side airbag 24 is inflated and deployed, the side airbag 24 deployment pressures act directly on the side pads 36A. For this reason, in this embodiment, it is suppressed that deployment pressure is added to 36 A of side pads compared with the case where the deployment pressure of the side airbag 24 acts on a side pad directly. Therefore, the side pad 36A can be prevented from being crushed, and the development pressure is easily concentrated on the fracture portion 56 via the waist inner force cloth 60LI. In addition, the overall length of the waist inner force cloth 60LI is shortened as compared with the case where the waist inner force cloth 60LI is disposed between the outer side in the seat width direction of the seat back skin 54 and the seat inner side of the side pad 36A. Can do. As a result, since the elongation of the waist inner force cloth 60LI is suppressed, the development pressure is transmitted to the breaking portion 56 provided in the seat back skin 54, and the stress is easily concentrated on the breaking portion 56.

  Further, the paddle 30 that has received the deployment pressure of the side airbag 24 at the cushion support portion 30C is displaced in the direction of arrow A (see FIG. 2), and the cushion support portion 30C is deployed in the deployment region (deployment path) of the side airbag 24. Evacuated from.

  And when the stress more than a predetermined value acts on the fracture | rupture part 56, the sewing thread | yarn of the fracture | rupture part 56 will be fractured | ruptured and the fracture | rupture part 56 will be cleaved. Specifically, for example, when the waist is taken as an example, both the waist outer force cloth 60LO and the waist inner force cloth 60LI receive the deployment pressure of the side airbag 24, and a tensile force acts on the breaking portion 56 (sewing portion). To do. Here, as shown by a two-dot chain line in FIG. 1, immediately before a predetermined value of force is applied to the fracture portion 56, the looseness 64LO of the waist outer force cloth 60LO and the looseness 64LI of the waist inner force cloth 60LI are eliminated, and the waist part. The outer force cloth 60LO and the side skin 54S are in contact with each other via the absorbing rubber 66. At this time, the absorbing rubber 66 is extended, and the side skin 54S swells in the sheet width direction. Although illustration is omitted, the front side skin 54F swells in front of the seat and in the seat width direction. Further, when the deployment pressure of the side airbag 24 is transmitted to the breaking portion 56 via the waist outer force cloth 60LO and the waist inner force cloth 60LI and a stress of a predetermined value or more acts on the breaking portion 56, the breaking portion 56 is cleaved. The

  Thereby, in the vehicle seat 10, as shown in FIG. 1, the side airbag 24 is deployed in front of the seat. The seat occupant P of the vehicle seat 10 is protected against a side collision by the side airbag 24 deployed outside the seat (collision side). At this time, the stretched absorbing rubber 66 is contracted, and a slack 64LO is formed again on the waist outer force cloth 60LO from which the slack has been eliminated.

  As described above, in the vehicle seat 10 according to the present embodiment, in the configuration in which the side airbag module 20 and the side support mechanism 22 are built in the side support 18 of the seat back 14, the side cloth 18 having the slack is provided. The airbag 24 can be deployed satisfactorily.

  Further, in the above embodiment, the webbing 60 is provided, the stress is concentrated on the fractured portion 56, and the side airbag 24 is deployed, so that the side of the backboard 115 as shown in FIG. Compared to the conventional configuration in which the side airbag 124 is deployed by opening the portion 115B, it is not necessary to reduce the rigidity of the backboard 15. Therefore, even when the occupant touches the backboard 15 when the side door is opened and the occupant gets on and off, the touch of the backboard 15 can be kept good.

  In the above-described embodiment, as shown in FIG. 2, the waist inner side force cloth 60LI has one end side sewn to the seat outer end 54FO of the front side skin 54F, and the other end side to the second force cloth bracket 68. It was locked. And the seat front side of the waist inner force cloth 60LI is disposed along the seat outer side of the side pad 36A from the seat outer end 54SF of the side skin 54F of the seat back skin 54, and the seat outer side of the side pad 36A. The paddle 30 passes between the inside of the seat and is locked to the second baffle bracket 68. However, as shown in FIG. 8, one end side of the waist inner force cloth 60LI is sewn to the seat outer end 54FO of the front side skin 54F, arranged along the seat outer side of the side pad 36A, and the other end side of the paddle 30. The front end of the seat and the outer end 30F of the seat may be locked.

  In this case, compared with the said embodiment, the full length of the waist part inner side cloth 60LI can be shortened further. Therefore, the expansion of the waist inner force cloth 60LI is further suppressed, and therefore, when the side airbag 24 is inflated and deployed, the deployment pressure is easily concentrated on the fractured portion 56 via the waist inner force cloth 60LI. Therefore, the breaking portion 56 can be further promptly opened, and the deployment of the side airbag 24 can be completed more quickly.

  Furthermore, in the said embodiment, the 1st bedding bracket 62 was extended ahead from the sheet | seat front end of the inflator 26 by the side view. However, as shown in FIG. 9, the seat front end 62 </ b> F of the first baffle bracket 62 may be located behind the seat rear end of the side airbag module 20. From the viewpoint of suppressing the expansion of the side airbag 24 in the seat width direction, it is preferable that the first baffle bracket 62 extends forward from at least the front end of the seat of the inflator 26 in a side view. If the seat front end of the first baffle bracket 62 (that is, the seat front end 62F of the front portion 62C in the oblique direction) and the seat front end 15A on the side portion of the backboard 15 are substantially at the same position in side view. Even when a passenger's hand touches the backboard 15 when the passenger gets on and off the vehicle, the feeling of touch can be kept good. Here, the same position means that the seat front end of the first baffle bracket 62 and the seat front end 15A on the side portion of the backboard 15 are not completely in the same position in a side view. It is included if it is within a range where it can be kept good.

  Further, in the above embodiment, as shown in FIG. 2, the slack 64LO provided on the waist outer force cloth 60LO is provided in front of the seat from the seat front end 15A on the side of the backboard 15, and the inflator 26 is provided. It was provided ahead of the front edge of the seat. Further, the slack 64LO is provided at the outer edge of the paddle 30 and behind the front edge 30F of the seat. However, as shown in FIGS. 8 and 9, the slack 64LO may be disposed in front of the seat from the side airbag module 20. In this case, the deployment pressure can be transmitted quickly by loosening.

  Furthermore, in the above embodiment, the front ends of the seat front-rear direction portions 68B and 70B of the second baffle bracket 68 or the third baffle bracket 70 are the rear end of the cushion support portion 30C of the paddle 30 and the seat in a side view. It may extend to the vicinity of the inner end 30R. In this case, the overall length of the waist inner force cloth 60LI or the chest inner force cloth 60CI can be further shortened. Therefore, the expansion of the waist inner force cloth 60LI or the chest inner force cloth 60CI is further suppressed, so that when the side airbag is inflated and deployed, the deployment pressure is broken through the waist inner force cloth 60LI or the chest inner force cloth 60CI. It becomes easy to concentrate on the part 56. Therefore, the breaking portion 56 can be further promptly opened, and the deployment of the side airbag can be completed more quickly.

  In the vehicle seat 10, the paddle 30 is displaced in the direction of the arrow A by the deployment pressure of the side airbag 24, so that the deployment of the side airbag 24 toward the front of the seat is allowed. Moreover, in the vehicle seat 10, the paddle drive mechanism 34 does not restrain the displacement of the paddle 30 in the direction of arrow A (see FIG. 2) (restraint force is extremely small). The paddle 30 is pushed away in a short time from the start and is developed in front of the seat. For this reason, the seated occupant P is well protected against side collision.

  In particular, since the vehicle seat 10 employs the paddle drive mechanism 34 that allows the paddle 30 to be displaced in the direction of arrow A, the side support 24 is driven by the power of the motor 48 in the configuration in which the side airbag 24 can be satisfactorily deployed as described above. 18 can be easily adjusted.

  Further, in the vehicle seat 10, the holding state of the paddle 30 by the bracket 38 is maintained when the side airbag 24 is deployed. In other words, in the vehicle seat 10, the paddle 30 is not separated from the seatback 14 with the operation of the side airbag module 20.

  Furthermore, since the vehicle seat 10 includes the above-described two-part side airbag 24, the chest C can be supported with an appropriate load (reaction force) while the seat occupant P is firmly supported at the waist L. it can. In other words, the paddle 30 disposed so as to overlap the side airbag 24 in a side view is retracted from the deployment region of the side airbag 24 in a plan view by the deployment pressure of the side airbag 24, thereby The large side airbag 24 that can protect the occupant P can be deployed well.

  Although the above embodiments have been described, the embodiments of the present invention are not limited to these embodiments, and various other embodiments can be adopted without departing from the gist of the present invention. For example, instead of the paddle 30 that is displaced in the direction of arrow A as a whole by the deployment pressure of the side airbag 24, a paddle that is partially displaced by the deployment pressure of the side airbag 24 may be provided. Further, instead of the side support adjusting mechanism 22 having the paddle driving mechanism 34 for driving the paddle 30 in one direction, a side support mechanism for driving the paddle in both directions may be provided.

  Further, a paddle partially separated from the bracket 38 may be provided instead of the paddle 30 that is displaced in the direction of the arrow A while maintaining the guided state with the bracket 38 by the guide pins 30A and 30B.

  Moreover, in the said embodiment, the example whose chamber of the side airbag 24 is a 2 division structure was shown. However, the present invention is not limited to this. For example, the chamber of the side airbag 24 may have a three-part structure.

  Moreover, in the said embodiment, the example in which the side airbag 24 was provided in the seat outer side part (near side) in the seat back 14 was shown. However, this invention is not limited to this, For example, it is good also as a structure by which the side airbag 24 was provided in the seat inner side part (far side) in the seat back 14. FIG. In this case, the side airbags in the seat direction may be configured to receive gas supply from the common inflator 26.

  Furthermore, in the said embodiment, the paddle drive mechanism 34 showed the example comprised using the feed screw mechanism. However, the present invention is not limited to this. For example, the paddle drive mechanism 34 may be configured using a rack and pinion mechanism, a linear motor, or the like. In the above embodiment, the outer cable 44 is connected to the guide pin 30A. In this example, the paddle 30 and the like are driven to the inside of the seat while allowing the paddle 30 and the like to be displaced to the inside of the seat by pressing the paddle to the outside of the seat. However, the present invention is not limited to this, and for example, it is possible to arrange the pressing rod so as to be driven in the seat width direction and to press the guide pin 30A and the like with the pressing rod.

  Furthermore, in the said embodiment, the example which adjusts the side support 18 with the driving force of the motor 48 was shown. However, the present invention is not limited to this, and for example, the seat occupant P may manually adjust the side support 18. For example, the paddle has a pivot shaft in the vertical direction of the seat, the shaft is frictionally engaged with the inner surface of the cylinder, and when the force is manually applied to the side support, the pivot axis of the paddle is brought into contact with the inner surface of the cylinder. A configuration is also possible in which the paddle can be rotated while receiving frictional resistance, and the paddle can be easily rotated when an external force of a predetermined value or more (for example, the deployment pressure of the side airbag 24) is applied. include.

  Furthermore, in the above-described embodiment, the upper protrusion 30CU of the cushion support portion 30C of the paddle 30 is not disposed so as to overlap the chest corresponding force cloth 60C in the side view, and the lower protrusion 30LU overlaps the waist corresponding force cloth 60L. An example is shown. However, the present invention is not limited to this, and for example, the upper protruding portion 30CU may be disposed so as to overlap the chest corresponding force cloth 60C.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 14 Seat back 14A Seat back frame 15 Back board 18 Side support 20 Side airbag module (side airbag apparatus)
22 Side support adjustment mechanism 24 Side airbag 26 Inflator 30 Paddle (frame member)
34 Paddle drive mechanism (skeletal displacement mechanism, skeletal movable structure)
36A Side pad 54 Seat back skin 54S Side skin 54F Front side skin 56 Breaking part 60CI Chest inner force cloth (inner tension transmission member)
60CO chest outer force cloth (outer tension transmission member)
60LI waist inner force cloth (inner tension transmission member)
60LO Lumbar outer force cloth (outer tension transmission member)
64L1 Loose 64LO Loose 66 Absorbing rubber (elastic member)
62 First baffle bracket (rear fixing member)
68 Second baffle bracket (inner fixing member)
70 Third baffle bracket (inner fixing member)

Claims (11)

A side support adjusting mechanism having a skeleton member for supporting a side pad provided on a side support of a seat back, and a skeleton displacement mechanism for displacing the skeleton member in a seat width direction;
A rupture portion formed in the seat back skin is provided in a folded state so as to overlap the skeleton member in a side view in the seat width direction in the seat back, and is expanded by receiving gas supply from the inflator. A side airbag device that has a side airbag that is broken and bulges forward in the front-rear direction of the seat, and is provided on the outer side in the seat width direction of a seatback frame that forms a skeleton of the seatback;
The seat back skin is provided on the inner side in the seat width direction than the side skin that is part of the seat back skin and on the outer side in the seat width direction than the seat back frame. An outer tension transmission member that has a slack and is less likely to extend than the seat back skin;
A rear side fixing member fixed to the seat back frame and fixed to the rear end side in the seat front-rear direction of the tension transmission member;
A vehicle seat comprising:   2. The vehicle seat according to claim 1, wherein the rear side fixing member extends forward from at least a front end of the inflator in the front-rear direction in a side view. 3.   3. The vehicle seat according to claim 1, wherein the front end in the front-rear direction of the seat is fixed to the break portion formed in a front side skin that is a part of the seat back skin and at least a part thereof. The seat back skin, wherein the seat pad is disposed along the seat width direction outer side of the side pad, and the seat front-rear direction rear end side is fixed to the rear side fixing member or the inner side fixing member fixed to the rear side fixing member. A vehicle seat comprising an inner tension transmission member that is more difficult to extend.   3. The vehicle seat according to claim 1, wherein the front-rear direction front end side is fixed to the breaking portion formed in a front side skin that is a part of the seat back skin, and the side pad is also provided. The seat back-and-forth direction rear end side is disposed along the seat width direction outer side of the skeleton member, and has an inner tension transmission member that is less likely to extend than the seat back skin. Vehicle seat to be used.   4. The vehicle seat according to claim 3, wherein the inner tension transmission member is disposed along an inner side in the seat width direction of the skeleton member. 5.   The vehicle seat according to any one of claims 1 to 5, wherein the slack is arranged in front of the side airbag device in a front-rear direction of the seat in a side view. Sheet.   The vehicular seat according to any one of claims 1 to 6, wherein the front and rear ends of the slack sheet in the front-rear direction are connected to each other by an elastic member to which tension is applied. Sheet.   The vehicle seat according to any one of claims 1 to 7, wherein the skeleton member is displaced inward in the seat width direction by the skeleton displacement mechanism at the front end in the seat front-rear direction of the rear fixing member. A vehicle seat, wherein the vehicle seat is arranged in parallel with a side portion of the side skin.   9. The vehicle seat according to claim 1, wherein, in a side view, a seat width of a backboard provided at a front end in the seat front-rear direction of the rear fixing member and a rear end of the seat back. The vehicle seat, wherein the outer end in the direction and the front end in the front-rear direction of the seat are at the same position.   The vehicular seat according to any one of claims 5 to 9, wherein the inner tension transmission member is provided with a slack on a rear end side in a seat front-rear direction from the skeleton member. Vehicle seat.   The vehicle seat according to any one of claims 1 to 10, further comprising a part including at least an outer portion of the skeleton member in the seat width direction when a deployment pressure of the side airbag acts. Alternatively, a vehicle seat characterized by having a skeletal movable structure for retracting all of them inward in the seat width direction.

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