JP4260662B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly to a reduction in the thickness of a seat back.

In a seat back of a vehicle seat, a plurality of S springs are supported on a seat back frame to which the seat back pad is attached so as to be positioned on the rear side of the seat back pad, and the body pressure of the occupant input to the seat back pad There is what is received by the S spring (see, for example, Patent Document 1). In this type of seat back, the blindfold seat back board that covers the S spring is attached to the seat back frame with a clearance allowing the seat back pad and the S spring to be deformed. It is supposed to be.
Japanese Utility Model Publication No. 6-185

  However, as described above, if the seatback board for blindfolding is attached to the seatback frame in a state where a clearance allowing the deformation of the seatback pad and the S spring is opened with respect to these, There was a problem that the thickness was always increased.

  Therefore, an object of the present invention is to provide a vehicle seat that can reduce the thickness of the seat back.

In order to achieve the above-described object, the invention according to claim 1 is directed to a supporting part (for example, the supporting parts 101 and 102 in the embodiment) on both sides and an erection part for connecting the upper parts of these supporting parts (for example, the erection part in the embodiment). 103) on the inside of the seat back frame (for example, the seat back frame 31 in the embodiment), and the rear surface (for example, the rear surface 35b in the embodiment) is exposed to the outside by receiving body pressure on the front surface (for example, the front surface 35a in the embodiment). with arranging a plate member (second seat back plate 35 in the example embodiment), Ri Na linked via a (spring 146 in example embodiment) elastic members and said seat back frame and該Gaiso plate member, The exterior plate member is a space (for example, in the embodiment) surrounded by the seat back frame. The side and upper end surfaces are provided close to the inner peripheral surface of the seat back frame (for example, the inner peripheral surface 31c in the embodiment) so as to close the intermediate portion 144), and the outer plate member Step portions (for example, step portions 156 in the embodiment) having a step shape recessed toward the rear from the center portion of the exterior plate member are formed at both left and right end portions, and the elastic member is disposed in front of the step portions. It is characterized in that the.

The invention according to claim 2 is the invention according to claim 1 , further comprising a connecting shaft that connects the lower ends of the pillars on both sides and rotatably supports the lower part of the exterior plate member. It is said.

  According to the first aspect of the present invention, since the exterior plate member that is provided inside the seat back frame and the rear surface is exposed to the outside is connected to the seat back frame by the elastic member, the body pressure of the occupant is reduced by the seat back. When receiving, this exterior board member moves, deforming an elastic member, and receives a passenger | crew's body pressure by the deformation | transformation of this elastic member. In this way, the exterior plate member itself exposed to the outside is connected to the seat back frame by the elastic member and moved when subjected to the body pressure of the occupant, so that a clearance allowing deformation of the seat back pad and the S spring is provided in these. The seat back can be made thinner as compared with the case where a blindfold seat back board is attached to the seat back frame in an open state.

In addition , since the side and upper end surfaces of the exterior plate member are close to the inner peripheral surface of the seat back frame with a predetermined distance, for example, a pad or a spring that supports the pad on the side receiving the body pressure of the exterior plate member Etc., these can be hidden. That is, it is possible to prevent the portion of the pad not covered with the skin from being seen from the outside. Moreover, it can prevent that a foreign material etc. penetrate | invade from the clearance gap between the side part of an exterior board member, an upper end surface, and the inner peripheral surface of a seat back frame.

According to the invention of claim 2 , since the lower portion of the exterior plate member is rotatably supported by the seat back frame, the exterior plate member deforms the elastic member when receiving the body pressure of the occupant in the seat back. Rotating around the lower part, that is, moving along the determined locus. Therefore, it is possible to prevent the exterior plate member from generating an unpleasant sound by interfering with the inner peripheral surface of the seat back frame when moving.

A vehicle seat according to an embodiment of the present invention will be described below with reference to the drawings.
The vehicle seat 11 of the present embodiment is, for example, a single-seat seat that is provided in a vehicle interior of a vehicle and used as a driver seat, a passenger seat, or the like, and is specifically a passenger seat.

  The vehicle seat 11 has the appearance shown in FIGS. 1 and 2, and is attached to a pair of left and right seat rails 13 and 14 that are fixed to a vehicle body floor (not shown) in a state along the vehicle body longitudinal direction via a bracket 12. It is mounted and is guided by the seat rails 13 and 14 and slides in the longitudinal direction of the vehicle body. In the following description, front, rear, left and right are front, rear, left and right in the vehicle seat 11.

  The vehicle seat 11 is supported by the seat rails 13 and 14 in a substantially horizontal posture and supports the occupant mainly on the heel portion, and is slidably connected to the rear end portion of the seat cushion 20 to be occupant. The seat back 21 that mainly supports the back portion of the seat back 21 and the headrest 22 that is supported on the opposite side of the seat cushion 20 of the seat back 21 and supports the back of the occupant mainly. In addition, although the seat back 21 can be reclined, it demonstrates below with the standing state along substantially vertical for convenience.

  The seat cushion 20 has a seat cushion frame (seat frame) 25 that is slidably supported by the seat rails 13 and 14, and a posture along the substantially horizontal position on the seat cushion frame 25 as shown in FIGS. The seat cushion plate (plate member, frame plate member) 26 supported by the seat cushion pad 26, the seat cushion pad (pad) 27 provided on the seat cushion plate 26 in a substantially horizontal posture, and the surface 27a side of the seat cushion pad 27 That is, it has a net sheet (skin material) 28 covering the upper side.

  As shown in FIG. 3, the seat back 21 has a seat back frame (seat frame) 31 that is swingably connected to a rear end portion of the seat cushion frame 25, and a posture along the front side of the seat back frame 31. A frame-shaped first seat back plate (plate member, frame plate member) 32 provided, a seat back pad (pad) 33 provided on the front side of the first seat back plate 32, and a surface 33a side of the seat back pad 33 That is, the net sheet (skin material) 34 covering the front side, the second seat back plate (buffer plate part, exterior plate member) 35 provided on the rear side of the first seat back plate 32, and the outside of the seat back frame 31 are covered. And a cover 36.

  The headrest 22 includes a headrest body 39 provided with a pair of left and right posts 38 for attachment to the seat back 21, a headrest pad (pad) 40 provided on the front side of the headrest body 39, and the surface of the headrest pad 40. 40a side, that is, a net sheet (skin material) 41 covering the front side.

  The seat cushion 20 will be further described.

  The seat cushion frame 25 is formed of a metal material such as a steel material, and has a pair of legs 43 and 44 that are spaced apart in the left-right direction, as shown in FIGS. 3 and 4. These leg portions 43 and 44 are slidably supported by a pair of seat rails 13 and 14 shown in FIGS. As shown in FIGS. 3 and 4, the leg portions 43 and 44 are connected to each other at a front end portion by a connecting portion 45 extending in the left-right direction, and the rear end portions are also connected to each other via the seat back frame 31. . The connecting portion 45 is formed by bending a rod-shaped member made of, for example, a circular tube. Further, the leg portions 43 and 44 are respectively formed with concave portions 47 and 48 that are recessed downward in the middle portion in the front-rear direction.

  In addition, in the seat cushion frame 25, stays 50 and 51 extending in directions close to each other are fixed to rear portions of both leg portions 43 and 44, and a support frame 52 extends forward on the stays 50 and 51. It is fixed in the state. The support frame 52 is formed by bending a rod-shaped member made of, for example, a circular tube, and is fixed to the stays 50 and 51 and extends forward from the stays 50 and 51, respectively. It has a substantially U shape having side extension parts 53 and 54 and a connecting part (bar-like part) 55 extending in the left-right direction so as to connect the front end parts of these side extension parts 53 and 54. . The side extension 53 is formed with two rods 53a along the front-rear direction, and the side extension 54 is formed with two bars 54a along the front-rear direction. Here, the interval between the front rod-shaped portions 53a and 54a is wider than the interval between the rear rod-shaped portions 53a and 54a.

  An elastically deformable, that is, flexible seat cushion plate 26 is attached to the support frame 52. The seat cushion plate 26 is an integrally molded product made of a synthetic resin material such as polypropylene, and the front wall portion 58 extends along the left-right direction and substantially vertically on the front side, and the rear wall extends along the left-right direction and tilts vertically. A wall portion 59, a side wall portion (side extension portion) 60 along the front-rear direction on one side in the left-right direction and substantially vertical, and a side wall portion (side extension portion) along the front-rear direction and substantially vertical on the opposite side in the left-right direction. 61 is connected in a substantially rectangular frame shape, and an upper plate portion 62 is provided so as to cover these upper sides.

  The upper plate portion 62 is on the front side and is connected to the front wall portion 58 and the front portions of the side wall portions 60 and 61, and the left side in the left and right direction side of the front plate portion 64 in the left and right direction side. A side plate portion 65 connected to the side wall portion 60 on one side in the left-right direction and further connected to a side portion on the one side in the left-right direction of the rear wall portion 59; A side plate portion 66 connected to the side portion on the side and connected to the side wall portion 61 on the opposite side in the left-right direction, and further connected to the side portion on the opposite side in the left-right direction of the rear wall portion 59, And a central plate portion (buffer plate portion) 67 that extends to the vicinity of the front side of the rear wall portion 59 and is connected to the same center of the front plate portion 64.

  As shown in FIGS. 7 to 9, the rear end portion of the central plate portion 67 is separated from the rear wall portion 59 in the front-rear direction, and as a result, a gap 69 is formed between them. . Moreover, the center board part 67 and the side board part 65 are spaced apart in the left-right direction, and as a result, the slit 70 is formed between these. Similarly, the central plate portion 67 and the side plate portion 66 are separated in the left-right direction, and as a result, a slit 71 is formed between them. Here, the central plate portion 67 is completely separated from the side plate portions 65 and 66 and the rear wall portion 59 and is connected to only the front plate portion 64 in a cantilever state. In other words, the gap 69 and the slits 70 and 71 are continuous in a U-shape in plan view, so that the seat cushion plate 26 has a shape in which both the left and right side portions and the rear portion are opened, and the gap 69 and the slits 70 and 71 are located inside. A large deflection stroke at the rear portion of a certain central plate portion 67 is ensured. The central plate portion 67 is inclined so that the rear side is slightly lower.

  The inner peripheral edge portion which is the central plate portion 67 side of the side plate portion 65, that is, the central side in the left-right direction, has a tongue piece 72 extending in a cantilevered manner toward the inner side, that is, the central plate portion 67 so It forms a pleat by being formed in parallel. As a result, a slit 73 is formed between adjacent ones of the tongue pieces 72. Here, the tip of the tongue piece 72 and the bottom of the slit 73 are formed in an arc shape. The side plate portion 65 including all the tongue pieces 72 is inclined so that the central plate portion 67 side is slightly lower and the rear side is slightly lower.

  Similarly, the inner peripheral edge portion which is the central plate portion 67 side of the side plate portion 66, that is, the central side in the left-right direction, also has a tongue piece 74 extending in a cantilevered manner toward the inner side, that is, the central plate portion 67 with a gap in the front-rear direction. It forms a pleat by being formed in parallel so as to be opened. As a result, a slit 75 is formed between adjacent ones of the tongue pieces 74. Here, the tip of the tongue piece 74 and the bottom of the slit 75 are formed in an arc shape. The side plate portion 66 including all the tongue pieces 74 is also inclined so that the central plate portion 67 side is slightly lower and the rear side is slightly lower. Here, in both the side plate portions 65 and 66, the protruding lengths of the tongue pieces 72 and 74 are shorter than the extending length of the central plate portion 67.

  The seat cushion plate 26 is attached to the support frame 52 so that the support frame 52 of the seat cushion frame 25 is disposed inside the front wall portion 58 and the side wall portions 60 and 61. Here, as shown in FIGS. 8 to 10, the front plate portion 64 and the both side plate portions 65, 66 have fitting mounting portions (mounting portions) 76, 77, 78 protruding downward along the plate thickness direction. More specifically, two or more are formed respectively.

  As shown in FIG. 8, the left and right mounting portions 76 formed on the front plate portion 64 are projecting piece portions that linearly protrude downward along the plate thickness direction in a posture along the direction orthogonal to the front-rear direction. 76A and the axis line located in the vicinity of the upper extension of the protruding piece portion 76A so as to be positioned on the central plate portion 67 side after being positioned on the side opposite to the central plate portion 67 from the lower end of the protruding piece portion 76A. As a result, the mounting portion 76 has a mounting opening 76C that is always open between the protruding piece 76A and the fitting piece 76B. Is formed. The fitting piece portion 76B has an arc shape larger than the semicircle.

  As shown in FIG. 10, the attachment portions 77 at the two front and rear portions formed on the side plate portion 65 are protruding piece portions that linearly protrude downward along the plate thickness direction in a posture along the direction orthogonal to the left-right direction. 77A and an axis line located near the upper extension of the projecting piece 77A so as to be positioned on the center plate 67 side after being once located on the side opposite to the center plate 67 from the lower end of the projecting piece 77A. As a result, the mounting portion 77 has a mounting opening 77C that is always open between the protruding piece 77A and the fitting piece 77B. Is formed. The fitting piece 77B also has an arc shape larger than the semicircle.

  The two front and rear attachment portions 78 formed on the side plate portion 66 also have a protruding piece portion 78A that protrudes linearly downward along the plate thickness direction in a posture along a direction orthogonal to the left-right direction, and this protruding piece portion 78A. A fitting that is curved in an arc shape centering on an axis disposed in the vicinity of the extension of the projecting piece 78A so as to be positioned on the side of the central plate 67 after being positioned on the side opposite to the central plate 67 from the lower end of As a result, the mounting portion 78 is formed with a mounting opening 78C that is always open between the protruding piece 78A and the fitting piece 78B. The fitting piece 78B also has an arc shape larger than the semicircle.

  When the seat cushion plate 26 is attached to the support frame 52, as shown in FIG. 9, the connecting portion 55 of the support frame 52 is provided on the curved inner side of the fitting piece portion 76 </ b> B of each attachment portion 76 of the front plate portion 64. The rod-shaped part 53a of the support frame 52 is fitted inside the curve of the fitting piece part 77B of the attachment part 77 of the side plate part 65, and further, the curve of the fitting piece part 78B of the attachment part 78 of the side plate part 66 is fitted. The rod-shaped part 54a of the support frame 52 is fitted inside and attached.

  In the above attachment state, as shown in FIG. 9, the attachment portion 76 has a shape that partially surrounds the connecting portion 55 around its axis, and the normally open attachment opening 76C shown in FIG. 8 is connected. It traverses along the axial direction of the portion 55.

  9 and 10, in the above attachment state, the attachment portion 77 has a shape that partially surrounds the rod-like portion 53a around its axis, and the always-open attachment opening 77C is a rod-like portion. It traverses along the axial direction of 53a.

  In the above attachment state, as shown in FIG. 9, the attachment portion 78 has a shape that partially surrounds the rod-shaped portion 54a around its axis, and the normally open attachment opening 78C is the axis of the rod-shaped portion 54a. Cross along the direction.

  As described above, the front plate portion 64 can be slightly rotated around the connecting portion 55 of the support frame 52, and the side plate portion 65 can also be rotated slightly around the side extension portion 53 of the support frame 52. The portion 66 can also turn slightly with the side portion extending portion 54 of the support frame 52 as the center.

  In the mounted state, the seat cushion plate 26 protrudes in the plate thickness direction on both side edge sides opposite to each other in the side-by-side direction of the pair of side extension portions 53, 54, that is, the left-right direction. It has.

  Further, in the mounted state, the seat cushion plate 26 has a pair of side wall portions facing the opposite sides of the pair of side extension portions 53 and 54 and extending along the side extension portions 53 and 54. 60 and 61 are formed outside the attachment portions 77 and 78, and a slit 70 extending along the side extension portion 53 is formed on the opposite side of the attachment portion 77 from the side wall portion 60. A slit 71 extending along the side extension 54 is formed on the opposite side of the side wall portion 61 of the 78, and an attachment opening 77C is formed in the attachment portion 77 on the slit 70 side. In 78, an opening 78C for attachment is formed on the slit 71 side.

  When the seat cushion plate 26 is attached to the seat cushion frame 25, first, the pair of side wall portions 60 and 61 are held with both hands in a state in which the attachment portion 76 is locked to the connecting portion 55 as a state of lowering forward. The seat cushion plate 26 is bent by twisting them in a direction away from each other. Then, since the slits 70 and 71 are formed, the side wall portions 60 and 61 side easily rotate from the slits 70 and 71, respectively. As a result, the attachment portion 77 on the slit 70 side from the side wall portion 60 and The attachment portion 78 on the slit 71 side from the side wall portion 61 is easily separated. As a result, the mounting openings 77C and 78C formed on the slits 70 and 71 side of the mounting portions 77 and 78 are separated from each other. In this state, the pair of side extension portions 53 and 54 are positioned between the mounting portions 77 and 78 by rotating the seat cushion plate 26 about the connecting portion 55 so as to be substantially horizontal. After that, when the bending of the seat cushion plate 26 is released, the side extension portion 53 enters the attachment portion 77 from the attachment opening portion 77C side and the side portion extends from the attachment opening portion 78C side to the attachment portion 78. As a result, the seat cushion plate 26 is attached to the seat cushion frame 25.

  Here, the attachment portion 76 is in the vicinity of the edge portion of the front plate portion 64 on the front wall portion 58 side, the attachment portion 77 is in the edge portion of the side plate portion 65 on the side wall portion 60 side, and the attachment portion 78 is the side plate portion. 66, respectively, on the side wall portion 61 side edge adjacent to this, all the tongue pieces 72 of the side plate portion 65, all the tongue pieces 73 of the side plate portion 66 and the central plate portion 67 are formed. Each of them is arranged horizontally inside the support frame 52.

  Note that a locking groove (locked portion) 80 shown in FIG. 10 for locking the net sheet 28 described above is provided at the lower end edge of the front wall portion 58, the side wall portions 60 and 61, and the rear wall portion 59. The seat cushion plate 26 is formed over the entire circumference. The locking groove 80 has a wide locking space 81 on the bottom side, and a constricted portion 82 whose opening side is narrower than the locking space 81 on the opening side.

  As shown in FIGS. 8 and 9, a spring (elastic member) 84 is interposed between the central plate portion 67 of the seat cushion plate 26 and the support frame 52. That is, between the engagement portion 85 fixed to the inside of the side extension portion 53 of the support frame 52 and the engagement portion 86 fixed to the side plate portion 65 side of the central plate portion 67 of the seat cushion plate 26. Coiled springs 84 are interposed in a state where the axes are arranged in the left-right direction, and a plurality of such support structure portions 87 are provided apart from each other in the front-rear direction. Similarly, between the engagement portion 88 fixed to the inside of the side extension portion 54 of the support frame 52 and the engagement portion 89 fixed to the side plate portion 66 side of the central plate portion 67 of the seat cushion plate 26. A coiled spring 84 is interposed with the axis line arranged in the left-right direction, and a plurality of such support structure portions 90 are provided apart from each other in the front-rear direction.

  In the seat cushion plate 26 described above, the front wall portion 58, the rear wall portion 59, the side wall portions 60 and 61, the front plate portion 64, and the both side plate portions 65 and 66 are the outer peripheral edges of the back surface 27b, that is, the lower surface of the seat cushion pad 27. A frame portion 93 is formed in which a plurality of tongue pieces 72 and 74 projecting inward are formed on the inner peripheral edge portions on both the left and right sides. Then, the central plate extends from one side of the frame portion 93, that is, the inner peripheral edge portion on the front side, to the vicinity of the front side of the inner peripheral edge portion on the rear side toward the reverse side, that is, the inner peripheral edge portion on the rear side. The part 67 extends. Here, the elastic cushioning mechanism in which the central plate portion 67 and the support structure portions 87 and 90 are disposed on the opposite side of the seat cushion plate 26 from the seat cushion pad 27 and on the central side of the back surface 27b of the seat cushion pad 27. 83.

  The seat cushion pad 27 is made of, for example, a foam material such as urethane foam, and is placed on the upper side of the seat cushion plate 26 so as to cover it. As shown in FIG. 10, the seat cushion pad 27 has a shape in which both end portions in the left-right direction are slightly raised like a bank, and the net seat 28 is to be locked just inside these bank-like portions. A locking groove (locked portion) 94 is formed extending along the front-rear direction. The locking groove 94 has a wide locking space 95 on the bottom side, and a constricted portion 96 whose opening side is narrower than the locking space 95 on the opening side.

  The seat cushion pad 27 is placed on the upper side of the seat cushion plate 26 so as to cover the seat cushion plate 26, so that both edge portions in the left-right direction, that is, the back surface 27 b side of the bank side portion are formed on both side plate portions 65 and 66 of the seat cushion plate 26. The central portion in the left-right direction, that is, the back surface 27 b side of the seating surface side portion is placed on the central plate portion 67 of the seat cushion plate 26. As a result, the body pressure of the occupant on the bank side portion of the seat cushion pad 27 is received mainly by the side plate portions 65 and 66 of the seat cushion plate 26, and the occupant body pressure on the seat surface side portion of the seat cushion pad 27 is the same. The seat cushion plate 26 is mainly received by the central plate portion 67.

  The net sheet 28 has a three-dimensional knitted shape made of a thermoplastic synthetic resin material, has flexibility, and is heat-compressed with a mold, as shown in FIG. The end locking portion (locking portion) 97 having a relatively large thickness is formed, and the terminal portion is consolidated into a shape in which the inner portion of the end locking portion 97 is thinner than the end locking portion 97. ing. The end locking portion 97 is locked to the constricted portion 82 of the locking groove 80 by being fitted to the locking space 81 of the locking groove 80 of the seat cushion plate 26. In other words, the net seat 28 covers the seat cushion pad 27 that is placed in contact with the frame-like seat cushion plate 26 so that the outer edge side of the back surface 27b faces and covers the surface 27a side. At the same time, the end locking portion 97 is fitted into a locking groove 80 formed in the seat cushion plate 26 on the back surface 27b side of the seat cushion pad 27 and is locked to the constricted portion 82, thereby the seat cushion pad 27. Is held between the seat cushion plate 26 and the seat cushion plate 26. The net seat 28 is bonded to the seat cushion pad 27, while the seat cushion pad 27 is not bonded to the seat cushion plate 26.

  Further, the net sheet 28 is formed in a crease shape at an intermediate predetermined position, and the tip side thereof is heated and compression-molded by a mold, so that an intermediate locking portion 98 having a relatively large thickness is formed and the intermediate engagement portion 98 is formed. It is hardened so that the thickness inside the stop part 98 becomes thinner than this. The intermediate locking portion 98 is locked to the constricted portion 96 of the locking groove 94 by being fitted to the locking space 95 of the locking groove 94 of the seat cushion pad 27. As a result, the net seat 28 is shaped along the surface 27a of the seat cushion pad 27 without floating.

  The seat cushion 20 has an exposed outer surface, i.e., a design surface, on the upper side of the net seat 28, and an exposed outer surface, i.e., a design surface, on the lower side, with the seat cushion plate 26 having an open middle portion. As shown in FIG. 11, the seat cushion pad 27 is held at a small thickness so that a gap can be secured between the seat cushion pad 27 and the vehicle body floor to improve the foot seat occupant's ability to put in the seat. The air permeability is improved and the structure is less prone to stuffiness.

  Here, the concave portions 47 and 48 of the leg portions 43 and 44 of the seat cushion frame 25 have a vertical gap between the support frame 52 of the seat cushion frame 25 and the seat cushion plate 26, and as a result, As shown in FIGS. 1 and 2, the seat cushion 20 is formed with a through-hole 99 penetrating in the left-right direction below the seat cushion pad 27. Therefore, if a tray is provided under the seat of the vehicle seat 11, the tray can be accessed from the side and the usability is excellent. Further, when applied to a center walk-through specification vehicle, a long object can be stored under the seat in a state of extending in the vehicle width direction. If the driver's seat has the same structure, it can store longer objects. In addition, since a long object can be inserted under the seat in the vehicle width direction, it can be stored immediately after opening the door, which is convenient for storing an umbrella in the rain.

  In the seat cushion 20 as described above, when the occupant sits down, the seat cushion pad 27 is elastically deformed via the net seat 28 to generate a reaction force, and when the seat cushion pad 27 is pushed, The front plate portion 64 is elastically deformed while rotating the mounting portion 76 relative to the support frame 52 to generate a reaction force so that the central plate portion 67 of the seat cushion plate 26 lowers the rear portion below the occupant's center of gravity. While elastically deforming itself, the spring 84 is elastically deformed to generate a reaction force, and both side plate portions 65 and 66 of the seat cushion plate 26 are elastically deformed and reacted while the mounting portions 77 and 78 are rotated with respect to the support frame 52. Force is generated, and the tongue pieces 72 and 74 are also elastically deformed so as to lower the tip side and generate a reaction force. Sufficient cushion stroke obtained optimal body pressure distribution with resulting occupant can be reliably held in a stable posture.

  Further, when the occupant moves in the left-right direction during cornering of the vehicle, for example, the side plate portion 65 on the side where the weight moves moves more elastically while rotating the mounting portion 77 more with respect to the support frame 52. Thus, a larger reaction force is generated, the tongue piece 72 of the side plate portion 65 is also elastically deformed to generate a larger reaction force, and the central plate portion 67 is also elastically deformed so as to be twisted and moves in weight. Since the larger reaction force is generated by elastically deforming the spring 84 on the side, the occupant can be reliably held in a stable posture.

  Of the above-described material and thickness of the seat cushion plate 26, the number, position, width, interval and length of the tongue pieces 72 and 74, the width and length of the central plate portion 67, and the elastic force of the spring 84, etc. The characteristics of the seat cushion 20 can be changed by adjusting an appropriate one. Further, the characteristics can also be changed by selectively making the plurality of attachment portions 76, 77, 78 rotatable and non-rotatable.

  Next, the seat back 21 will be described.

  The seat back frame 31 is formed of a metal material such as a steel material, and has a pair of support columns 101 and 102 arranged at intervals in the left-right direction as shown in FIG. The lower ends of the portions 101 and 102 are connected by a connecting shaft 104 that extends in the left-right direction. In addition, the seat back frame 31 is connected to the connecting shaft 104 on the opposite side to the connecting shaft 104 by the erection portion 103 extending in the left-right direction. When the connecting shaft 104 is combined, the seat back frame 31 forms a rectangular frame shape as a whole. The seat back frame 31 is supported at the rear end portion of the seat cushion frame 25 so as to be swingable at the position of the connecting shaft 104, and swings around the coaxial line with the connecting shaft 104.

  As shown in FIG. 12, one support column 101 is bent outward in the left-right direction from a bottom plate portion 105 extending substantially vertically in a state orthogonal to the left-right direction and an edge on the front side of the bottom plate portion 105. A front plate portion (locked portion) 106 and a rear plate portion 107 bent outward from the rear edge of the bottom plate portion 105 in the left-right direction. A recess 108 is formed.

  Similarly, as shown in FIG. 13, the other support column 102 has a bottom plate portion 110 that extends substantially vertically in a state orthogonal to the left-right direction, and an outer side in the left-right direction from the front edge of the bottom plate portion 110. Front plate portion (locked portion) 111 and a rear plate portion 112 bent outward in the left-right direction from the rear edge of the bottom plate portion 10. A recess 113 is formed that opens to the outside.

  As shown in FIG. 14, the erection portion 103 includes a bottom plate portion 115 extending in the left-right direction in a substantially horizontal state, and a front plate portion (locked portion) that rises upward from a front edge portion of the bottom plate portion 115. ) 116 and a rear plate portion 117 that rises upward from the rear edge portion of the bottom plate portion 115, thereby forming a concave portion 118 that opens upward, which is the outside.

  Here, the bottom plate part 105 of one support column part 101, the bottom plate part 115 of the installation part 103 and the bottom plate part 110 of the other support part 102 are continuous, and the front plate part 106 and the installation part 103 of one support part 101 are continuous. The front plate portion 116 and the front plate portion 111 of the other column portion 102 are also continuous, and further, the rear plate portion 107 of the one column portion 101, the rear plate portion 117 of the installation portion 103, and the other column portion 102. The rear plate portion 112 is also continuous. As a result, the concavity 108 of one strut 101, the concavity 118 of the erection portion 103, and the concavity 113 of the other strut 102 are also continuous. That is, the seat back frame 31 has a concave shape in which the support portions 101 and 102 on both sides in the left-right direction and the erection portion 103 on the opposite side to the center of swinging open to the outside. It has a shape that continues from the column part 101 to the installation part 103 and further to the other column part 102.

  As shown in FIG. 3, the front plate portions 106 and 111 of both the column portions 101 and 102 of the seat back frame 31 and the front plate portion 116 of the installation portion 103 are elastically deformable, that is, a flexible first seat back plate. 32 is fixed in a contact state. The first seat back plate 32 is an integrally molded product made of a synthetic resin material such as polypropylene, and as shown in FIGS. 3 and 7, the upper plate portion 121 extending in the left-right direction and the left-right direction of the upper plate portion 121. A side plate portion 122 extending from one side to the connecting shaft 104 side, that is, the lower side, a side plate portion 123 extending from the opposite side of the upper plate portion 121 to the connecting shaft 104 side, that is, the lower side, And a lower plate part 124 extending in the left-right direction so as to connect the lower end parts of 123. Thereby, the 1st seat back plate 32 makes | forms a square frame shape, and makes the shape by which the space part 125 was formed in the center.

  The inner peripheral edge of the upper plate 121 on the space 125 side is spaced apart in the direction of the space 125, that is, the tongue piece 128 extending in a cantilevered manner in the inner plate in the extending direction of the upper plate 121, that is, in the left-right direction. A plurality of parallel openings are formed to form a pleat. As a result, a slit 129 is formed between adjacent ones of the tongue pieces 128.

  Similarly, the inner peripheral edge portion of the lower plate portion 124 on the space portion 125 side is also spaced in the direction of the space portion 125, that is, the tongue piece 130 extending in a cantilevered manner in the inner portion in the extending direction of the lower plate portion 124, that is, in the left-right direction. A plurality of lines are formed in parallel to form a pleat shape. As a result, a slit 131 is formed between adjacent ones of the tongue pieces 130.

  Similarly, the inner peripheral edge of the side plate portion 122 on the space portion 125 side is also spaced apart in the direction of the space portion 125, that is, the tongue piece 132 extending in a cantilevered manner in the inner plate portion 122. Are formed in parallel to form a pleat. As a result, a slit 133 is formed between adjacent ones of the tongue pieces 132.

  Similarly, the inner peripheral edge portion of the side plate portion 123 on the space portion 125 side also has a tongue piece 134 extending in a cantilevered manner in the direction of the space portion 125, that is, inward, in the extending direction of the side plate portion 123, that is, in the vertical direction. Are formed in parallel to form a pleat. As a result, a slit 135 is formed between adjacent ones of the tongue pieces 134. Here, the tip portions of all the tongue pieces 128, 130, 132, and 134 and the bottom portions of all the slits 129, 131, 133, and 135 are formed in an arc shape.

  The first seat back plate 32 includes a side plate portion 122 on the front plate portion 106 of the column portion 101 of the seat back frame 31, a side plate portion 123 on the front plate portion 111 of the column portion 102, and a front plate portion 116 of the installation portion 103. The upper plate portions 121 are brought into contact with each other on the front side (the side opposite to the seat back pad 33), and are attached and fixed with a resin clip 138 as shown in FIGS. Here, the first seat back plate 32 is brought into contact with the seat back frame 31 at the outer edge of each of the upper plate part 121 and the both side plate parts 122 and 123, that is, the edge part opposite to the space part 125. As a result, all the tongue pieces 128, 130, 132, and 134 are all disposed inside the seat back frame 31.

  Here, all the tongue pieces 128, 130, 132, and 134 are slightly inclined so as to be located on the seat back frame 31 side, that is, on the rear side toward the front end side.

  The seat back pad 33 is made of, for example, a foam material such as urethane foam, and is disposed on the front side of the first seat back plate 32 so as to cover it. The seat back pad 33 is slightly smaller than the first seat back plate 32.

  The seat back pad 33 is disposed on the front side of the first seat back plate 32 so as to cover it, and the outer peripheral edge portion, that is, the back surface 33b side of the bank side portion is the upper plate portion 121 of the first seat back plate 32, both side plates. It is made to contact | abut to the parts 122 and 123 and the lower board part 124, and the back surface 33b side of the center part of the left-right direction, ie, a seat surface side part, is arrange | positioned facing the space part 125.

  The net sheet 34 has a three-dimensional knitted shape made of a thermoplastic synthetic resin material, and has flexibility, and the terminal portion is heated and compression-molded with a mold to be hardened. As shown in FIGS. 12 to 14, the first end portion locking groove portion (locking portion) 141 and the first end portion locking groove portion 141 located inside the first end portion locking groove portion 141, Is formed with a second end locking groove 142 that opens in the opposite direction. The first end locking groove 141 is an outer peripheral edge portion of the front plate portion 106 that forms the front wall of the concave portion 108 of the column portion 101 of the seat back frame 31 and a front plate that forms the front wall of the concave portion 118 of the installation portion 103. The outer peripheral edge portion of the portion 116 and the outer peripheral edge portion of the front plate portion 111 that forms the front wall of the recess 113 of the support column portion 102 are engaged with each other, that is, locked to the seat back frame 31. That is, the net sheet 34 is covered with the seat back pad 33 disposed in front of the first seat back plate 32 fixed to the seat back frame 31 so as to cover the surface 33a side from the front, and the first end thereof. The portion locking groove portion 141 is locked to all the front plate portions 106, 111, 116 of the seat back frame 31 provided on the back surface 33b side of the seat back pad 33, whereby the seat back pad 33 is moved to the first seat back. Hold between the plate 32. The net sheet 34 is bonded to the seat back pad 33, while the seat back pad 33 is not bonded to the first seat back plate 32. Further, the first end locking groove 141 of the net seat 34 is fixed to the front plate portions 106, 111, 116 of the seat back frame 31 by fitting.

  In the above state, the seat back frame 31 has a pair of support columns 101 and 102 along both side edges of the seat back pad 33, and the erection part 103 extends along the upper edge of the seat back pad 33. The seat back frame 31 has recesses 108, 118, 113 that open outward in the left-right direction in the pair of support columns 101, 102 and open upward in the installation unit 103, respectively. It will be formed continuously on the other column 102.

  In the state where the first end locking groove 141 is locked to the seat back frame 31 as described above, the second end locking groove 142 of the net sheet 34 has a concave groove shape on the outside. Become.

  The second seat back plate 35 is an integrally molded product made of a synthetic resin material such as elastically deformable, that is, flexible polypropylene. The second seat back plate 35 is formed in the space 144 surrounded by the seat back frame 31, that is, the seat back frame 31. Is disposed on the rear side of the first seat back plate 32 and is opposed to the center side of the back surface 33b of the seat back pad 33. Here, the second seat back plate 35 is disposed close to the inner peripheral surface 31c of the seat back frame 31 so as to have a slight gap, and as a result, to the rear of the first seat back plate 32 and the seat back pad 33. Prevent exposure. That is, the side and upper end surfaces of the second seat back plate 35 are close to the inner peripheral surface 31 c of the seat back frame 31 with a predetermined interval. Further, the second seat back plate 35 is brought into contact with the center portion in the left-right direction of the seat back pad 33, that is, the back surface 33b side of the seating surface side portion. As a result, the seat back 21 receives the body pressure of the occupant on the outer peripheral edge side of the seat back pad 33, that is, the bank side portion, by the first seat back plate 32, and to the center side of the seat back pad 33, that is, the seat surface side portion. Is received mainly by the front surface 35a of the second seat back plate 35 different from the first seat back plate 32.

  The second seat back plate 35 is provided so as to be movable back and forth with respect to the seat back frame 31. Specifically, the second seat back plate 35 pivots around the connecting shaft 104 with respect to the connecting shaft 104 of the seat back frame 31. As shown in FIG. 12, the lower portion is supported and the seat back frame 31 is supported by a spring (elastic member) 146 disposed on the front surface 35a. In other words, the engaging portion 148 fixed to the space portion 144 side of the bottom plate portion 105 of the column portion 101 of the seat back frame 31 and the column portion 101 side and the first seat back plate 32 side of the second seat back plate 35 are fixed. A coil-shaped spring 146 is interposed between the engaging portion 149 and the supporting portion 150, and the supporting structure 150 is spaced apart vertically as shown in FIG. More specifically, two places are provided.

  Similarly, as shown in FIG. 13, the engagement portion 152 fixed to the space portion 144 side of the bottom plate portion 110 of the column portion 102 of the seat back frame 31, the column portion 102 side of the second seat back plate 35, and the first portion. A coiled spring 146 is interposed between the engaging portion 153 fixed to the seat back plate 32 side and the axis line is disposed in the left-right direction, and such a support structure portion 154 is separated vertically. More specifically, two places are provided.

  Here, in the vicinity of both end portions in the left-right direction of the second seat back plate 35, a step portion 156 having a step shape is formed so as to be separated from the first seat back plate 32 rather than the center portion in order to store the spring 146. ing.

  The second seat back plate 35 and the support structures 150 and 154 are elastically disposed so as to face the center side of the back surface 33b of the seat back pad 33 on the side opposite to the seat back pad 33 of the first seat back plate 32. A buffer mechanism 157 is configured.

  In addition, as shown in FIGS. 11-14, the rear surface 35b of the 2nd seat back plate 35 comprises the outer surface exposed to the exterior of the rear side of the vehicle seat 11, ie, a design surface. Further, the seat back frame 31 includes a rear side of the rear surfaces 107b and 112b and inner surfaces 105c and 110c of both the column portions 101 and 102, and a second surface of the rear surface 117b and the inner surface 115c of the installation portion 103. The rear side of the seat back plate 35 constitutes an outer surface, that is, a design surface exposed to the outside of the rear side of the vehicle seat 11. In other words, the rear surface 35b of the second seat back plate 35, the rear surface 31b of the seat back frame 31, and the rear side of the inner peripheral surface 31c of the seat back frame 31 from the second seat back plate 35 are exposed rearward. Yes.

  Further, the second seat back plate 35 has a rear surface 35b located in front of the rear surfaces 107b, 112b, 117b of the rear plate portions 107, 112, 117 of the seat back frame 31 in a state where no occupant is seated. As a result, the rear portion of the seat back 21 composed of the second seat back plate 35 and the seat back frame 31 has a shape in which a seat back concave portion 159 that is recessed forward is formed in the center as a whole, thereby reducing the knee clearance of the rear seat occupant. It can be secured.

  The seat back 21 has a front exposed outer surface, i.e., a design surface, formed by the net sheet 34, and an intermediate portion has a rear exposed outer surface, i.e., a design surface, formed by the second seat back plate 35. Since the pad 33 and the first seat back plate 32 having an open shape are held, the thickness is reduced. From this point, it is possible to further secure the knee clearance of the rear seat occupant. Further, since the first seat back plate 32 has an open shape and the second seat back plate 35 has a gap between the seat back frame 31, the air permeability is improved and the structure is less likely to cause stuffiness.

  As shown in FIG. 3, the cover 36 is made of a synthetic resin that covers the opening side of the recesses 108 and 113 of the both column portions 101 and 102 that open to the outside of the seat back frame 31 and the opening side of the recess 118 of the installation portion 103. As shown in FIG. 12, a plate-shaped side blocking portion 161 that covers the recess 108 of the support column 101 and a plate-shaped side blocking portion 162 that covers the recess 113 of the support column 102 as shown in FIG. 14 and a plate-like upper closing portion 163 shown in FIG. 14 that covers the recess 118 of the erection portion 103 so as to connect the end portions of the side closing portions 161 and 162 to each other. It has a shape.

  Since the cover 36 is a window side in the vehicle seat 11, that is, a passenger seat in a right-hand drive vehicle in this case, a reclining mechanism for adjusting the angle of the seat back 21 is operated below the left side closing portion 161. A lever 165 shown in FIG. 3 is attached.

  As shown in FIG. 12, a front side locking portion 167 that protrudes toward the other side blocking portion 162 is formed at the front edge of the side blocking portion 161, and also on the rear edge. A rear side locking portion 168 that protrudes to the same side is formed. Similarly, as shown in FIG. 13, a front side locking portion 169 that protrudes toward the other side portion closing portion 161 is formed at the front end portion of the side portion closing portion 162. A rear side locking portion 170 that protrudes to the same side is also formed on the portion. Similarly, as shown in FIG. 14, a front locking portion 171 that protrudes downward is formed at the front edge of the upper blocking portion 163, and the rear edge also protrudes on the same side. A rear locking portion 172 is formed.

  The cover 36 has a second side of the net sheet 34 in a state where the front side locking portions 167, 169, 171 are locked to the front plate portions 106, 111, 116 of the seat back frame 31 by the first end locking grooves 141. The rear locking portions 168, 170, and 172 are locked to the rear sides of the rear plate portions 107, 112, and 117 of the seat back frame 31 by being fitted and locked in the end locking grooves 142. Thus, the seat back frame 31 is engaged.

  Here, the net seat 34 on the seat back 21 side may be locked similarly to the seat cushion 20 side described above. In other words, the end portion of the net sheet 34 is heat-compressed with a mold to form a relatively thick end locking portion (locking portion) 143A as shown in FIG. A locking space 143B having a wider width on the bottom side is formed on the outer peripheral edge of the first seat back plate 32 attached to the frame 31 with a clip 138, and the opening side of the locking space 143B is narrower than the locking space 143B. Since the engaging groove 143D of the outer opening which is the constricted portion 143C is formed, and the end engaging portion 143A is fitted to the engaging space 143B of the engaging groove 143D, that is, the position engaged with the constricted portion 143C. is there. In this case, a locking groove 145 that locks the front side locking portions 167, 169, 171 of the cover 36 is formed in the first seat back plate 32.

  In the seat back 21 as described above, when the seated occupant leans, the seat back pad 33 is elastically deformed via the net seat 34 to generate a reaction force. The upper plate portion 121, the side plate portions 122, 123 and the lower plate portion 124 of the seat back plate 32 and the respective tongue pieces 128, 130, 132, 134 are elastically deformed so that the front end side is positioned rearward, and the reaction force And the second seat back plate 35 is also rotated about the connecting shaft 104 and moved rearward to elastically deform the spring 146 and, if necessary, elastically deform itself to generate a reaction force. Therefore, a sufficient cushion stroke can be obtained and an optimal body pressure distribution can be obtained, so that the occupant can be reliably held in a stable posture.

  Further, when the occupant moves in the left-right direction during cornering of the vehicle, for example, the side plate portion 122 and the tongue piece 128 on the side where the weight moves are greatly deformed, and the second seat back plate 35 is also twisted. By changing the posture as described above, the spring 146 on the side where the body weight moves is largely elastically deformed to generate a larger reaction force, so that the occupant can be reliably held.

  When the second seat back plate 35 rotates about the connecting shaft 104 and moves rearward due to the leaning of the occupant, the second seat back plate 35 is moved to the rear plate portions 107, 112, A seat back recess 159 that is located in front of 117 and is recessed forward in the center of the rear surface of the seat back 21 is maintained to maintain a large knee clearance for the rear seat occupant.

  Also in the seat back 21, the material and thickness of the first seat back plate 32, the number, position, spacing, width and length of the tongue pieces 128, 130, 132 and 134, and the material and thickness of the second seat back plate 35 The characteristics can be changed by adjusting the thickness and the elastic force of the spring 146 that supports the thickness.

  Here, as described above, the second seat back plate 35 that receives the body pressure of the occupant on the center side, that is, the seat surface side of the seat back 21, is the first seat back plate 32 that receives the body pressure of the occupant on the outer peripheral edge side, that is, the bank side. Is separated and supported by the spring 146, so that a large displacement is possible.

  Next, the headrest 22 will be described.

  The headrest main body 39 of the headrest 22 shown in FIG. 16 is made of a foamed material of synthetic resin such as polypropylene. For example, a pair of posts 38 shown in FIG. , The mold is heated, and the polypropylene beads are foamed in the cavity to form a shape that can be shaped by the cavity.

  As shown in FIG. 16, a locking groove (locked portion) 175 for locking the above-described net sheet 41 extends around the entire periphery of the peripheral portion of the headrest body 39 on the front side of the post 38 as shown in FIG. Is formed. The locking groove 175 has a locking space 176 having a wider width on the bottom side, and a constricted portion 177 whose opening side is narrower than the locking space 176 on the opening side of the locking space 176.

  The headrest pad 40 is made of a foam material such as urethane foam, and is provided on the front side of the headrest body 39 so as to cover it.

  The net sheet 41 has a three-dimensional knitted shape made of a synthetic resin material, and is heated and compressed to form a relatively thick end locking portion (locking portion) 179. At the same time, the terminal portion is hardened in such a shape that the thickness of the inner portion of the end portion locking portion 179 is thinner than that. The end locking portion 179 is locked to the constricted portion 177 by being fitted to the locking space 176 of the locking groove 175 of the headrest main body 39. That is, the net sheet 41 is covered with the headrest pad 40 disposed in front of the headrest body 39 so as to cover the surface 40a, and the end locking portion 179 is locked to the locking groove 175. The headrest pad 40 is held between the headrest body 39. The net sheet 41 is bonded to the headrest pad 40.

  A space formed by the recesses 108, 113, 118 of the seat back frame 31 and the cover 36 is used as a storage space for devices.

  That is, as shown in FIG. 14, a pair of left and right (a pair of left and right) supporting the headrest 22 on the seatback frame 31 by fitting a pair of posts 38 of the headrest 22 into the recess 118 of the erection portion 103 of the seatback frame 31. A support portion (devices) 182 including a cylindrical guide 181 (only one is shown) is fixed to the bottom plate portion 115 of the erection portion 103 by welding or the like. That is, the support portion 182 including the pair of guides 181 is housed in a space surrounded by the recess 118 of the erection portion 103 of the seat back frame 31 and the upper closing portion 163 of the cover 36, in other words, the erection of the seat back frame 31. A space formed by the concave portion 118 of the portion 103 and the upper closing portion 163 of the cover 36 serves as a storage space 183 for the support portion 182 for supporting the headrest 22. A pair of insertion holes 184 for inserting the pair of posts 38 of the headrest 22 into the guide 181 are formed in the upper closing portion 163 of the cover 36 so as to be separated from each other in the left and right directions.

  Further, as shown in FIG. 17, the seat back frame 31 is on the window side of the vehicle seat 11, that is, the passenger seat of the right-hand drive vehicle in this case, and the lower part of the recess 108 of the left column portion 101 has a seat back as shown in FIG. A part of a reclining mechanism (devices) 186 that adjusts the angle of 21 is disposed. That is, the reclining mechanism 186 is housed in a space surrounded by the concave portion 108 of the column portion 101 of the seat back frame 31 and the side portion closing portion 161 of the cover 36, in other words, the concave portion 108 of the column portion 101 of the seat back frame 31. And the side closed portion 161 of the cover 36 is a storage space 187 for the reclining mechanism 186.

  Further, as shown in FIG. 12, side airbag modules (devices) 190 are arranged at the window side of the vehicle seat 11 of the seat back frame 31, that is, at the intermediate portion in the vertical direction of the concave portion 108 of the left column portion 101. ing. That is, the side airbag module 190 is accommodated in a space surrounded by the recess 108 of the column portion 101 of the seat back frame 31 and the side block portion 161 of the cover 36, in other words, the column portion 101 of the seat back frame 31. A space formed by the recess 108 and the side closing portion 161 of the cover 36 is a storage space 191 for the side airbag module 190.

  Here, the portion covering the storage space 191 for the side airbag module 190 in the side closing portion 161 of the cover 36 is separated from the other portions as shown in FIGS. The air bag grid 192 is removable. When the side airbag module 190 is operated, the airbag grid 192 is pressed by the deploying side airbag so that the front locking portion 167 is disengaged from the second end locking groove 142 of the net sheet 34 and the rear side. The locking portion 168 is disengaged from the rear plate portion 107 of the left column portion 101 of the seat back frame 31 and is disengaged from the seat back frame 31 as a whole. As a result, the recess 108 is opened, and the side airbag is deployed outward from this portion. Will do.

  Further, as shown in FIG. 18, the seat back frame 31 is seated in a middle portion in the vertical direction of the concave portion 108 of the left column portion 101 in the vehicle seat 11 and above the side airbag module 190 as shown in FIG. A control unit (devices) 194 for an occupant posture detection system including a seat height detection sensor that detects the sitting height of the occupant and a head detection sensor that detects the position of the head of the seated occupant is disposed. That is, the posture detection control unit 194 of the occupant posture detection system is housed in a space surrounded by the concave portion 108 of the column portion 101 of the seat back frame 31 and the side blocking portion 161 of the cover 36, in other words, the seat back frame 31. A space formed by the concave portion 108 of the column portion 101 and the side closing portion 161 of the cover 36 is a storage space 195 for the posture detection control unit 194.

  Further, since the seat back frame 31 is on the vehicle body center side of the vehicle seat 11, that is, in this case, the seat for the passenger seat of the right-hand drive vehicle, the upper portion of the recess 113 of the right column 102 is shown in FIGS. As described above, a hook mechanism (devices) 197 is arranged. That is, a concave portion 198 that is recessed deeper than the entire outer surface of the side closed portion 162 of the cover 36 is formed at the upper portion of the side closed portion 162 of the cover 36, and the hook 199 protrudes upward at the lower portion of the concave portion 198. It is provided to do. Here, the hook 199 and the recess 198 are provided so as not to protrude outwardly from the entire outer surface of the side closing portion 162, and as a result, the hook mechanism portion 197 including the recess 198 and the hook 199 is closed. It protrudes inward from the overall outer surface of the part 162. That is, the hook mechanism portion 197 is housed in the space in the recess 113 of the column portion 102 of the seat back frame 31. In other words, the space in the recess 113 of the column portion 102 of the seat back frame 31 is accommodated in the hook mechanism portion 197. A storage space 200 is provided for storing the protrusions on the inside. The hook mechanism portion 197 may be provided on the support column 101 on the opposite side of the seat back frame 31, and the space of the recess 108 of the support column 101 may be used as a storage space for storing the protrusion on the inside of the hook mechanism unit 197.

  In addition, a mobile phone storage portion (devices) 202 is disposed below the concave portion 113 of the right column portion 102 in the vehicle seat 11 of the seat back frame 31 as shown in FIGS. 19 and 20. That is, the lower portion of the side closing portion 162 of the cover 36, that is, below the hook mechanism portion 197, is formed with a recess 203 that is recessed deeper than the entire outer surface of the side closing portion 162 of the cover 36. A lid portion 204 is formed on the lower side to form a pocket shape that is recessed inward and downward. Here, the lid portion 204 is flush with the entire outer surface of the side closing portion 162, and as a result, the recess 203 protrudes inward from the entire outer surface of the side closing portion 162. That is, the recess 203 of the mobile phone storage unit 202 is stored in the space in the recess 113 of the support column 102 of the seat back frame 31. In other words, the space of the recess 113 of the support column 102 of the seat back frame 31 is stored in the mobile phone. A storage space 205 is provided for storing the protrusions on the inside of the storage unit 202. The mobile phone storage unit 202 may be provided on the support column 101 on the opposite side of the seat back frame 31, and the space of the recess 108 of the support column 101 may be used as a storage space for storing the protruding portion inside the mobile phone storage unit 202. .

  In addition, harnesses (devices) such as the above-described side airbag module 190 and occupant posture detection system are also housed in the space formed by the recess 108 and the cover 36 of the seat back frame 31 to improve the appearance quality. It has been made. Furthermore, the space of the recess 108 of the support column 101 may be a storage space for storing a speaker and a lifting / lowering handle.

  In the above embodiment, the case where the vehicle seat 11 of the present embodiment is applied to the passenger seat of the vehicle has been described as an example. However, the vehicle seat 11 can of course be applied to a vehicle seat 11 other than the passenger seat. For example, when applied to the driver's seat, the reclining mechanism 186 and the side airbag module 190 are changed on the opposite side in the left-right direction.

  According to the vehicle seat 11 of the present embodiment described above, the spring 146 provided on the front surface 35a side of the second seat back plate 35 provided on the inner side of the seat back frame 31 and the rear surface 35b exposed to the outside. The second seat back plate 35 moves while deforming the spring 146 when receiving the body pressure of the occupant at the seat back 21, and the body of the occupant is deformed by the deformation of the spring 146. You will be under pressure. Since the second seat back plate 35 itself exposed to the outside is connected to the seat back frame 31 by the spring 146 and receives the body pressure of the occupant in this way, a clearance allowing deformation of the seat back pad 33 and the S spring is provided in these. The seat back 21 can be made thinner as compared with a case where a blindfold seat back board is attached to the seat back frame 31 in a state where the seat back is opened.

  In addition, since the side and upper end surfaces of the second seat back plate 35 are close to the inner peripheral surface 31c of the seat back frame 31 with a predetermined interval, for example, the body pressure of the second seat back plate 35 is reduced. When the seat back pad 33 or the first seat back plate 32 that supports the seat back pad 33 is arranged on the receiving side, these can be hidden. That is, it is possible to prevent the portion of the seat back pad 33 that is not covered with the skin from being seen from the outside. Further, it is possible to prevent foreign matters and the like from entering the inside through a gap between the side portion and the upper end surface of the second seat back plate 35 and the inner peripheral surface 31 c of the seat back frame 31.

  Further, since the lower portion of the second seat back plate 35 is rotatably supported by the seat back frame 31, the second seat back plate 35 deforms the spring 146 when the seat back 21 receives the body pressure of the occupant. Rotating around the lower part, that is, moving along the determined locus. Therefore, it can be prevented that the second seat back plate 35 interferes with the inner peripheral surface of the seat back frame 31 to generate an unpleasant sound when moving.

  Furthermore, since the second seat back plate 35 is flexible, the second seat back plate 35 itself is deformed depending on the direction of the body pressure when the seat back 21 receives the body pressure of the occupant, Cushioning properties can be improved.

  In addition, since the rear surface 35b of the seat back frame 35 is exposed to the outside, the structure of the seat back 21 can be further simplified.

It is the perspective view seen from diagonally forward which shows the vehicle seat of one embodiment of the present invention. It is the perspective view seen from the slanting back which shows the vehicle seat of one embodiment of the present invention. It is a disassembled perspective view which shows the vehicle seat of one Embodiment of this invention. It is the disassembled perspective view seen from diagonally upward which shows the seat cushion of the vehicle seat of one Embodiment of this invention. It is a sectional side view which shows the passenger | crew seating state of the seat cushion of the vehicle seat of one Embodiment of this invention. It is a front sectional view showing a passenger seating state of a seat cushion of a vehicle seat according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating a vehicle seat according to an embodiment of the present invention, in which one side is omitted from a front side from a seat cushion pad and a front side from a seat back pad. It is the disassembled perspective view seen from the slanting lower part which shows the seat cushion of the vehicle seat of one Embodiment of this invention. It is the perspective view seen from the slanting lower part which shows the vehicle seat of one Embodiment of this invention. It is a fragmentary front sectional view showing a seat cushion of a vehicular seat of one embodiment of the present invention. 1 is a side sectional view showing a vehicle seat according to an embodiment of the present invention. It is a partial plane sectional view of one side showing a seat back of a vehicle seat of one embodiment of the present invention. It is a partial fragmentary sectional view of the reverse side which shows the seat back of the vehicle seat of one Embodiment of this invention. It is a fragmentary sectional side view which shows the upper part of the seat back of the vehicle seat of one Embodiment of this invention. It is a partial plane sectional view of the one side which shows another example of the seat back of the vehicular seat of one embodiment of the present invention. It is a plane sectional view showing the headrest of the vehicular seat of one embodiment of the present invention. It is a partial plane sectional view of another position of one side showing a seat back of a vehicular seat of one embodiment of the present invention. FIG. 5 is a partial plan sectional view of still another position on one side showing a seat back of a vehicle seat according to an embodiment of the present invention. It is a fragmentary perspective view which shows the vehicle seat of one Embodiment of this invention. It is a partial plane sectional view of the other side of the reverse side which shows the seat back of the vehicle seat of one embodiment of the present invention.

Explanation of symbols

31 Seat back frame 31b Rear surface 35 Second seat back plate (exterior plate member)
35a Front surface 35b Rear surface 101, 102 Post section 103 Construction section 146 Spring (elastic member)

Claims (2)

An exterior plate member that receives body pressure on the front surface and exposes the rear surface to the outside is disposed inside the seat back frame having the support portions on both sides and the erection portion that connects the upper portions of the support column portions, and the exterior plate member Ri Na and the said seat back frame and connected through a resilient member and,
The exterior plate member is provided with a side portion and an upper end surface close to the inner peripheral surface of the seat back frame so as to close the space surrounded by the seat back frame,
The left and right end portions of the exterior plate member are formed with a stepped portion having a step shape that is recessed rearward from the central portion of the exterior plate member, and the elastic member is disposed in front of the stepped portion. Vehicle seat. The connect lower ends of both side struts, the vehicle seat according to claim 1 Symbol mounting characterized by comprising a connecting shaft for supporting the lower portion of the outer plate member rotatably.

Images