Abstract:
Certain embodiments of the present invention include a vehicle seat having a seat component member, for example a seat cushion or a seat back. The seat component member has a pad forming a seat contour, a cover covering the pad and a mounting portion. At the mounting portion, a part of the cover is mounted to the pad by pulling the part of the cover to the pad. The mounting portion has a first portion for receiving pressure when an occupant seats on the vehicle seat, and a second portion for receiving a pressure lower than that the first portion receives. The mounting portion may have a structure in which the first portion is more flexible than the second portion.

Description:
[0001]    This application claims priority to Japanese patent application serial number 2012-123475, the contents of which are incorporated herein by reference. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    Embodiments of the present invention relate to a vehicle seat and, in particular, to a vehicle seat having a cover, a pad covered by the cover and a mounting portion. At the mounting portion, a part of the cover is pulled into a groove formed in the pad, whereby the part of the cover is mounted to the pad. 
         [0004]    2. Description of the Related Art 
         [0005]    Japanese Utility Model Laid-Open Publication No. 5-28300 discloses a vehicle seat having a seat cushion and a seat back. The seat cushion includes a pad and a cover. The pad defines a shape of the seat and elastically supports an occupant. The pad includes a groove (recess) extending in the seat width direction. The cover is in the form of a bag covering the pad. A part of the cover is pulled into the groove, whereby the cover is mounted to the pad (mounting portion). 
         [0006]    At the mounting portion, there is provided a suspension member, a stationary member, and a ring member. The ring member is of a substantially C-shaped configuration. The suspension member is bar-like, and extends laterally. The suspension member is mounted to a part of the cover, and can be arranged so as to extend along the groove. The stationary member consists of a bar, which meanders vertically over its entire length. The stationary member is wavy and is arranged inside the pad. The stationary member is equipped with trough portions embedded in the pad and crest portions exposed inside the groove. 
         [0007]    A part of the cover is pulled into the groove together with the suspension member. The part of the cover is connected to the stationary member by the ring member. At the mounting portion, the cover is held in position while suspended by the pad. When an occupant sits on the seat, the stationary member may become curved due to the weight of the occupant. As a result, the occupant can be comfortably seated on the pad. 
         [0008]    There is need in the art for a vehicle seat allowing an occupant to be seated more comfortably. 
       SUMMARY OF THE INVENTION 
       [0009]    Certain embodiments of the present invention include a vehicle seat having a seat component member such as a seat cushion or a seat back. The seat component member has a pad forming a seat contour, a cover covering the pad and a mounting portion. At the mounting portion, a part of the cover is attached to the pad. The mounting portion has a first portion receiving pressure when an occupant sits on the vehicle seat, and a second portion receiving a pressure lower than that which the first portion receives. The mounting portion may have a structure in which the first portion is more flexible than the second portion. 
         [0010]    Accordingly, the first portion, which is to receive higher pressure, is subject to deflection. Thus, the seat component member can be efficiently deflected in accordance with the magnitude of the pressure received from the occupant. In the above-described conventional seat cushion, the stationary member extends in the width direction. Thus, the seat cushion undergoes uniform deflection independent of the magnitude of the pressure from the occupant. Thus, it is rather difficult to achieve an improvement in terms of efficiently attaining sitting comfort. 
         [0011]    According to another aspect of the present invention, the pad may have a first pad portion at the first portion, and a second pad portion at the second portion. The second pad portion may have a stationary member so that the first pad portion undergoes deflection more easily than the second pad portion under the pressure. The cover may have a first cover portion at the first portion, and a second cover portion at the second portion. The second cover portion may have a suspension member so that the first cover portion undergoes deflection more easily than the second cover portion under the pressure. 
         [0012]    Then, the stationary member and the suspension member can be connected together at the second portion by a ring member or the like. Thus, a part of the cover can be mounted to the pad in a secure manner. Both the cover and the pad are subject to deflection at the first portion. Thus, it is possible for the seat component member to be efficiently deflected. 
         [0013]    According to another aspect of the present invention, the mounting portion may be formed so as to laterally extend in the width direction of the seat. Further, the mounting portion may be arranged at a portion of the seat component member. The portion of the seat component member is more subject to the pressure from the occupant than the other portion of the seat component member. As a result, it is possible for the seat component member to be deflected efficiently. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is a perspective view or a vehicle seat; 
           [0015]      FIG. 2   a  is a perspective view of a pad of the vehicle seat; 
           [0016]      FIG. 2   b  is an enlarged view of a portion indicated by an arrow IIb in  FIG. 2   a;    
           [0017]      FIG. 3  is a front view of the pad for showing the arrangement of wires; 
           [0018]      FIG. 4   a  is a cross-sectional view taken along line IVa-IVa in  FIG. 3 ; 
           [0019]      FIG. 4   b  is an enlarged view of a portion indicated by an arrow IVb in  FIG. 4   a;    
           [0020]      FIG. 4   c  is a cross-sectional view taken along line IVc-IVc in  FIG. 3 ; 
           [0021]      FIG. 4   d  is an enlarged view of a portion indicated by an arrow IVd in  FIG. 4   c;    
           [0022]      FIG. 5  is a cross-sectional view taken along line V-V in  FIG. 3 ; 
           [0023]      FIG. 6   a  is a bottom view of an embodiment of a wire; 
           [0024]      FIG. 6   b  is a bottom view of an embodiment of a wire; 
           [0025]      FIG. 6   c  is a bottom view of an embodiment of a wire; 
           [0026]      FIG. 6   d  is a bottom view of an embodiment of a wire; 
           [0027]      FIG. 7   a  is a front view of a wire embedded in the pad of  FIG. 3 ; 
           [0028]      FIG. 7   b  is a front view of an embodiment of a wire; 
           [0029]      FIG. 7   c  is a front view of an embodiment of a wire; 
           [0030]      FIG. 8  is a plane view of a pad of a seat cushion and a front view of a pad of a seat back; and 
           [0031]      FIG. 9  is a side view of the pad of the seat cushion and the pad of the seat back. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0032]    Each of the additional features and teachings disclosed above and below may be utilized separately or in conjunction with other features and teachings to provide improved vehicle seats. Representative examples of the present invention, which utilize many of these additional features and teachings both separately and in conjunction with one another, will now be described in detail with reference to the attached drawings. This detailed description is merely intended to teach a person of ordinary skill in the art further details for practicing preferred aspects of the present teachings and is not intended to limit the scope of the invention. Only the claims define the scope of the claimed invention. Therefore, combinations of features and steps disclosed in the following detailed description may not be necessary to practice the invention in the broadest sense, and are instead taught merely to particularly describe representative examples of the invention. Moreover, various features of the representative examples and the dependent claims may be combined in ways that are not specifically enumerated in order to provide additional useful configurations of the present teachings. 
         [0033]    An embodiment of the present invention will be described with reference to  FIGS. 1 to 5 . In the FIGS., symbol F indicates a front side of a vehicle seat. Symbol B indicates a rear side of the vehicle seat. Symbol UP indicates an upper side of the vehicle seat. Symbol DW indicates a lower side of the vehicle seat. Symbol PA indicates an occupant of a vehicle. 
         [0034]    In  FIG. 1 , a vehicle seat  2  has a seat cushion  4 , a seat back  6 , and a headrest  8  as seat component members. Basically, the seat component members respectively have frame members  4 F,  6 F,  8 F, pads  4 P,  6 P,  8 P, and covers  4 S,  6 S,  8 S. The pads  4 P,  6 P,  8 P define a shape of the seat, and elastically support the occupant seated in the vehicle seat  2 . The covers  4 S,  6 S,  8 S cover the pads  4 P,  6 P,  8 P. 
         [0035]    As illustrated in  FIG. 1 , the seat back  6  has a main portion  6   a,  side portions  6   b,  and a plurality of mounting portions  24  to  26 . The main portion  6   a  includes a flat surface at a center of the seat back  6 . The main portion  6   a  faces a torso portion of the occupant such as the back and waist. When the occupant is seated, a pressing force is also applied to the central portion of the main portion  6   a,  and the pressing force is gradually decreased toward the side portions  6   b.  An example of an adult male passenger is illustrated in  FIG. 9 . The pressing force from the occupant is applied to the pad  6 P over the range in which the man is seated. The range extends along a torso line TL from the lower edge of the seat back up until 500 mm over a hip point HP. The torso line TL extends vertically from the hip point HP. At this time, the waist of the occupant is firmly held in contact with the center of the lower portion of the main portion  6   a.  The center of the lower portion of the main portion  6   a  is pressed harder than the side portions of the main portion  6   a.    
         [0036]    The side portions  6   b  are situated on the sides of the main portion  6   a,  and protrude from the main portion  6   a  toward the seating side of the seat back  6 . 
         [0037]    The frame member  6 F is of an arcuate configuration. The pad  6 P is arranged on the frame member  6 F. The pad  6 P is covered with the cover  6 S. As shown in  FIGS. 4   a  and  4   b , a part of the cover (a stitched portion  16  thereof) is pulled by the pad  6 P at the mounting portions  24  to  26  to be thereby mounted to the pad  6 P. 
         [0038]    As shown in  FIGS. 1 ,  4   a ,  4   b , and  5 , the cover  6 S includes a plurality of cover pieces stitched into a bag-like shape. The cover pieces include a first piece  16   a,  a second piece  16   b,  a third piece  16   c,  and a pair of fourth pieces  16   d.    
         [0039]    The first to third pieces  16   a  to  16   c  cover the central portion in the width direction of the pad  6 P (i.e., the main portion  6   a ). The first piece  16   a  covers the lower portion of the central portion in the width direction. The second piece  16   b  covers the vertically central portion of the central portion in the width direction. The third piece  16   c  covers the upper portion of the central portion in the width direction. The pair of fourth pieces  16   d  respectively cover the side portions of the pad  6 P (i.e., the side portions  6   b ). 
         [0040]    As shown in  FIGS. 4   a  and  4   b , surfaces of end portions of the adjacent pieces overlap with each other to form the stitched portion  16 . The stitched portion  16  (a part of the cover) protrudes into the interior of the seat, and extends in the seat width direction or in the longitudinal direction. The stitched portion  16  is mounted to the pad  6 P at the mounting portions  24  to  26 . 
         [0041]    The pad  6 P supports the occupant elastically. As shown in  FIGS. 1 to 5 , a plurality of grooves  21  to  23  and a hole  6 H are formed in the pad  6 P. Preferably, an elastically expandable resin is employed as the material for the pad  6 P. Examples of such resin include polyurethane foam (density: 10 kg/m 3  to 60 kg/m 3 ). A sheet-like pad material  6 Pa may be arranged on a surface of the pad  6 P facing the cover  6 S. The pad material  6 Pa helps to provide the seat with a predetermined level of hardness so that it is possible to improve the seat&#39;s comfort. 
         [0042]    In  FIG. 3 , the hole  6 H extends through the pad  6 P in the thickness direction. The hole  6 H is formed for the purpose, for example, for controlling the inflating direction of an airbag (not shown). The hole  6 H is formed at the center in the vertical direction of each side portion  6   b,  and is in close proximity to a side groove  23 . 
         [0043]    As shown in  FIG. 2   a , a plurality of grooves (central grooves  21  and  22  and side grooves  23 ) are all of a recessed configuration, and extend laterally. The plurality of grooves are provided on the seating side of the pad  6 P. 
         [0044]    In  FIGS. 1 and 2   a , the central grooves  21  and  22  are situated at the mounting portions  24  and  25 , and extend in the seat width direction. The side grooves  23  are situated at the mounting portions  26  and extend in the vertical direction of the seat. As shown in  FIGS. 2   b  and  5 , the central grooves  21  and  22  and the side grooves  23  have a plurality of deep portions H (portions that are one step deeper). As shown in  FIG. 4   b , wires are partially exposed at the deep portions H. 
         [0045]    The pair of side grooves  23  are formed between the main portion  6   a  and the side portions  6   b.  The pair of central grooves  21  and  22  are provided side by side so as to extend across the main portion  6   a.  Both ends of the pair of central grooves  21  and  22  communicate with the side grooves  23 . 
         [0046]    As shown in  FIG. 9 , the second central groove  22  is situated in the upper portion of the main portion  6   a.  The first central groove  21  is situated in the lower portion of the main portion  6   a  and below the second central groove  22 . In the case, for example, of an adult male, it is desirable for the first central groove  21  to be situated above the hip point HP by −50 mm to 500 mm as measured along the torso line TL. When the occupant is seated, the waist of the occupant is situated at the center of the first central groove  21  (the center in the width direction of the lower portion of the main portion  6   a ). The waist includes the pelvis, the sacrum, and the lumbar vertebra. Typically, the occupant presses relatively firmly against the center of the first central groove  21 . 
         [0047]    As shown in  FIGS. 1 and 3 , the mounting portions  24  to  26  include a pair of central mounting portions  24  and  25  and a pair of side mounting portions  26 . The mounting portions  24  to  26  are provided with corresponding grooves (the central grooves  21  and  22  and the side grooves  23 ). The first central mounting portion  24  is situated along the first central groove  21  and extends in the seat width direction. The second central mounting portion  25  is situated along the second central groove  22  and is in parallel with the first central mounting portion  24  above the first central mounting portion  24 . The pair of side mounting portions  26  are situated along the side grooves  23  and extend in the vertical direction of the seat. 
         [0048]    As shown in  FIGS. 3 and 4   b , the mounting portions  24  to  26  are provided with pad side wires Y 1  to Y 3 , cover side wires Y 4  to Y 7 , and a ring member RM. The ring member RM is substantially of a C-shaped configuration. The ring member RM is closed by a tool or the like into a substantially O-shaped configuration. 
         [0049]    As shown in  FIGS. 3 and 7   a,  the first wire Y 1  consists of a bar, which has an upper wire Ya, a lower wire Yb, and a pair of connection wires Yc. The upper wire Ya extends along the central groove  22 . The lower wire Yb extends along the central groove  21 . The lower wire Yb is divided in half, and a division portion D 1  is provided at the center of the lower wire Yb. Assuming that the seat is, for example, for one person, the division portion D 1  can be set to approximately 10 mm. The pair of connection wires Yc extend in the vertical direction, connecting the upper wire Ya and the lower wire Yb. The first wire Y 1  extends along a substantially rectangular configuration. 
         [0050]    As shown in  FIGS. 1 and 5 , the first central mounting portion  24  is situated in the lower portion of the main portion  6   a.  The first central mounting portion  24  has a first portion  24   a  and a pair of second portions  24   b.  The first portion  24   a  is situated at the center of the central groove  21 . The pair of second portions  24   b  are situated on the sides of the first central groove  21  and are adjacent to the first portion  24   a.  The first central mounting portion  24  is provided with the lower wire Yb, a fourth wire Y 4 , and the ring members RM (see  FIG. 4   b ). 
         [0051]    As shown in  FIG. 5 , the lower wire (stationary member) Yb extends along the second portion  24   b.  The lower wire Yb has a length equivalent to that of one of the second portions  24   b.  The division portion D 1  of the lower wire Yb is situated at the first portion  24   a.  The lower wire Yb is embedded in the side portion of the first central groove  21  (the second portion). The fourth wire Y 4  consists of a bar of the same configuration and dimension as the lower wire Yb. A division portion D 2  is situated at the center of the fourth wire Y 4 . 
         [0052]    As shown in  FIGS. 4   a  and  4   b , the fourth wire Y 4  (suspension member) is mounted to a part of the cover (the stitched portion  16 ). The part of the cover is provided with a cloth member  17 . The cloth member  17  is stitched to the end of the first piece  16   a  and the second piece  16   b.  The cloth member  17  is in the form of a bag, which extends in the seat width direction. The fourth wire Y 4  is inserted into the cloth member  17 . The cloth member  17  is installed in the groove  21  so as to face the lower wire Yb. 
         [0053]    As shown in  FIG. 5 , the division portions D 1  and D 2  of the wires are situated at the first portion  24   a.  Thus, the first portion  24   a  is relatively subject to deflection. The lower wire Yb and the fourth wire Y 4  are situated at the pair of second portions  24   b.  Thus, the second portions  24   b  are less subject to deflection. 
         [0054]    As shown in  FIG. 3 , the upper wire Ya consists of a bar, which extends in a straight line. The upper wire Ya is arranged along the second central groove  22 , and has a length allowing it to be installed in the second central groove  22  (see  FIG. 2   a ). The upper wire Ya is embedded in the second central groove  22 . There is provided a fifth wire Y 5  consisting of a bar of the same configuration and dimensions as the upper wire Ya. The fifth wire Y 5  is mounted to the end (stitched portions) of the second piece  16   b  and the third piece  16   c  to be connected to a part of the cover (stitched portion). The fifth wire Y 5  is installed in the second central groove  22 , and faces the upper wire Ya. 
         [0055]    As shown in  FIG. 3 , one of the side mounting portions  26  is provided with a second wire Y 2 , a sixth wire Y 6 , and ring members (not shown). The other side mounting portion  26  is provided with a third wire Y 3 , a seventh wire Y 7 , and ring members. The second wire Y 2  and the third wire Y 3  are substantially straight wires, and have a length allowing them to be arranged along the side grooves  23 . The second wire Y 2  and the third wire Y 3  are embedded in the side grooves  23 . The third wire Y 3  has a bent portion halfway through, and can avoid the hole  6 H of the pad  6 P. 
         [0056]    The sixth wire Y 6  and the seventh wire Y 7  are substantially straight bars, and have substantially the same length as the second wire Y 2  and the third wire Y 3 . The sixth wire Y 6  and the seventh wire Y 7  are mounted to the end of a fourth piece  16   d  and the central cover pieces  16   a  to  16   c,  and are connected to a part of the cover (stitched portion). The sixth wire Y 6  and the seventh wire Y 7  are installed in the side grooves  23 , and face the second wire Y 2  and the third wire Y 3 , respectively. 
         [0057]    As shown in  FIGS. 4   a  and  4   b , when mounting the cover  6 S to the pad  6 P, the cover  6 S covers the pad  6 P. The ring members RM connect cover side wire (e.g., Y 4 ) with a pad side wire (e.g., Yb). As a result, the stitched portion  16  is pulled into the plurality of grooves  21  to  23  to be mounted inside the grooves  21  to  23 . Thus, the cover  6 S is mounted to the pad  6 P at the mounting portions  24  to  26 . 
         [0058]    In  FIG. 1 , the waist of the occupant is situated at the center of the lower portion of the main portion  6   a  when the occupant is seated in the vehicle seat  2 . Typically, the body of the occupant presses against the center of the lower portion of the main portion  6   a  and the center of the first central mounting portion  24  rather firmly. In  FIGS. 5 and 4   c , the division portions D 1  and D 2  of the wires are situated at the first portion  24   a  of the first central mounting portion  24 . Thus, both the pad  6 P and the cover  6 S are subject to more deflection from pressure at the first portion  24   a  than at the second portions  24   b.  At the second portions  24   b,  the lower wire Yb (stationary member) and the fourth wire Y 4  (suspension member) are connected by the ring members RM (see  FIG. 4   b ). As a result, the stitched portion  16  can be mounted to the pad  6 P at the second portions  24   b.    
         [0059]    When the occupant is seated and applying pressure against the first portion  24   a,  the lower wire Yb and the fourth wire Y 4  are displaced or deformed in a substantially V-shape around the first portion  24   a.  As a result, the seat back  6  is deflected in a recessed fashion at the first central mounting portion  24 . Thus, the vehicle seat  2  can be efficiently deflected in correspondence with the magnitude of the pressure from the occupant seated thereon. 
         [0060]    As described above, the first portion  24   a  is more subject to deflection under pressure than the second portions  24   b.  Thus, the seat back  6  can be deflected in accordance with the pressure applied from a seated occupant. 
         [0061]    At the second portions  24   b,  the ring members RM connect the suspension member with the stationary member. Thus, the part of the cover  6 S can be mounted to the pad  6 P relatively securely. At the first portion  24   a,  both the cover  6 S and the pad  6 P are subject to deflection. Thus, the seat back  6  can be efficiently deflected. 
         [0062]    The first central mounting portion  24  is provided so as to extend in the seat width direction. The first central mounting portion  24  is subject to pressure from the occupant. 
         [0063]    While the embodiments of invention have been described with reference to specific configurations, it will be apparent to those skilled in the art that many alternatives, modifications and variations may be made without departing from the scope of the present invention. Accordingly, embodiments of the present invention are intended to embrace all such alternatives, modifications and variations that may fall within the spirit and scope of the appended claims. For example, embodiments of the present invention should not be limited to the representative configurations, but may be modified, for example, as described below. 
         [0064]    Alternatively the lower wire Yb, the vehicle seat  2  may have a lower wire YB 1  shown in  FIG. 6   a . Alternatively, it may have a lower wire YB 2  shown in  FIG. 6   b , a lower wire YB 3  shown in  FIG. 6   c , and a lower wire YB 4  shown in  FIG. 6   d.    
         [0065]    The lower wire (stationary member) YB 1  shown in  FIG. 6   a  has a curved portion CM 1  at the center. The curved portion CM 1  is bent in a substantially U-shape, and is installed at the first portion  24   a  (see  FIG. 5 ). The curved portion CM 1  preferably protrudes in a forward direction or backward direction. As a result, the first portion  24   a  is made such that it is capable of further deflection. 
         [0066]    The lower wire YB 2  shown in  FIG. 6   b  is provided with a hinge structure CM 2  at the center. Due to the hinge structure CM 2 , the lower wire YB 2  can be bent, and is installed at the first portion  24   a  (see  FIG. 5 ). As a result, the first portion  24   a  is made such that it is capable of further deflection. 
         [0067]    The lower wire (stationary member) YB 3  shown in  FIG. 6   c  has an elastic portion CM 3  at the center. The elastic portion CM 3  is formed, for example, of rubber, elastomer, or resin. The elastic portion CM 3  is substantially of a straight configuration, and is installed at the first portion  24   a  (see  FIG. 5 ). As a result, the first portion  24   a  is made such that it is capable of further deflection. 
         [0068]    The lower wire (stationary member) YB 4  shown in  FIG. 6   d  has an elastic portion CM 4  at the center. The elastic portion CM 4  is substantially of a U-shaped configuration, and is installed at the first portion  24   a  (see  FIG. 5 ). The elastic portion CM 4  preferably protrudes in a forward direction or backward direction. As a result, the first portion  24   a  is made such that it is capable of further deflection. 
         [0069]    As shown in  FIG. 7   a , the first wire Y 1  may be formed by a single member, or by a plurality of wires. The first wire may have an upper wire and a lower wire separated from the first wire. The first wire may be formed by one wire as shown in  FIG. 7   a . Alternatively the first wire may be formed of two, three or more wires. 
         [0070]    As shown in  FIG. 7   c , the first wire Y 1   b  may have a pair of separate wires X 1  and X 2 . The wires X 1  and X 2  are substantially of a horizontally U-shaped configuration, and have a part of the upper wire (Ya 1 ), a part of the lower wire (Yb 2 ), and a connection wire Yc. The pair of wires X 1  and X 2  are arranged separately from each other. The upper wire may have a division portion D 3 , and the lower wire may have a division portion D 1 . 
         [0071]    As shown in  FIG. 7   b , the first wire Y 1  may have a plurality of wires connected by a connection portion JM. The connection portion JM is situated at a position corresponding to the center of the upper wire Ya, and the two wires can be connected through swaging or the like. 
         [0072]    Instead of or in addition to the above structure, the vehicle seat  2  may have a structure as shown in  FIGS. 8 and 9 . As shown in  FIG. 8 , a seat cushion  4  has a main portion  4   a,  side portions  4   b,  and a plurality of mounting portions (a third central mounting portion  27  and a pair of side mounting portions  27 ). The third central mounting portion  27  is situated along a first central groove  21   a  in the front portion of the main portion  4   a,  and extends in the seat width direction. The third central mounting portion  27  has a first portion  27   a  and a pair of second portions  27   b.  The first portion  27   a  is situated at the center of the central groove  21   a.  A division portion of the third central mounting portion  27  is installed at the first portion  27   a.  The pair of second portions  27   b  are situated on the sides of the first central groove  21   a,  and are adjacent to the first portion  24   a.  Thus, the seat cushion  4  is subject to deflection in a recessed fashion around the first portion  27   a.    
         [0073]    As shown in  FIG. 9 , when the occupant is seated on the vehicle seat  2 , the pressure from the occupant is applied to the range of the pad  4 P from the front edge to the rear edge. The buttocks and the leg portions of the occupant are situated at the center of the seat cushion  4  and contact with the main portion  4   a.  Thus, maximum pressure is applied to the center of the seat cushion  4 , and the front, center of the main portion  4   a  is pressed stronger than the other portions. The seat cushion  4  can be deflected in a recessed fashion around the first portion  27   a  of the third central mounting portion  27 . Thus, the front, center of the main portion  4   a  can be deflected in a satisfactory manner in response to the pressure from the occupant. 
         [0074]    The vehicle seat  2  has a plurality of mounting portions. One or a plurality of mounting portions may be formed in the same manner as the first central mounting portion  24  instead of or in addition to the first central mounting portion  24 . For example, instead of the second central mounting portion  25 , the vehicle seat  2  may have a second central mounting portion formed in the same manner as the first central mounting portion  24 . The second central mounting portion has a first portion at its center facing the back of the occupant, and second portions on both sides. The first portion can be formed whereby it is susceptible to more deflection than the second portions. 
         [0075]    As described above, both the pad  6 P and the cover  6 S in the vehicle seat  2  have the division portion D 1  and the division portion D 2 . Thus both the pad  6 P and the cover  6 S have a first portion  24   a  susceptible to more deflection than second portions  24   b.  Alternatively, only one of the pad  6 P or the cover  6 S may have a division portion. The other one may not have any division portions. Thus, in such an embodiment, only one of the pad  6 P or the cover  6 S may have a first portion susceptible to more deflection than the second portions. 
         [0076]    The stationary member and the suspension member may each have one or multiple division portions, a curved portion CM 1 , a hinge structure CM 2 , and elastic portions CM 3  and CM 4 . 
         [0077]    As shown in  FIG. 3 , the division portion of the stationary member and the division portion of the suspension member may be situated at corresponding positions, or may be situated at adjacent or different positions. The portion where the division portions are situated constitutes the first portion, and the portion where both the stationary member and the suspension member are situated constitute the second portion. 
         [0078]    The grooves may or may not be formed in the mounting portions. 
         [0079]    The stationary member and the suspension member may be connected by the cloth member  17  as shown in  FIGS. 4   a  and  4   b , or they may be directly connected without any intermediate cloth material. Instead of the cloth material, the stationary member and the suspension member may be connected by mounting members. As the mounting member, it is possible to employ, for example, a suspender of a linear configuration and formed of resin or the like. The suspender is provided on the cover so as to extend along the stitched portion, etc., and a part of the suspender is exposed through a cutout portion formed in the cover. The exposed part of the suspender and the stationary member can be connected by a ring member. 
         [0080]    Alternatively, it is also possible to provide a hook at the distal end of the suspender, with the hook being locked to a lock member provided on the stationary member or the pad. 
         [0081]    Each mounting portion of the vehicle seat  2  may have one or more of first portions and second portions. For example, the right and left front portions of the seat cushion may be pressed stronger than the other portions by the leg portions of the occupant. In this case, the third central mounting portion may have the second portion at the center, and the first portions on both the right and left sides. As a result, the seat cushion is subject to deflection in a recessed fashion at the first portions. Thus, the seat cushion can be efficiently deflected in response to the pressure at the time of seating of the occupant. 
         [0082]    The first and second portions may be provided in the seat back  6  or the seat cushion  4 , or some other seat component member such as the headrest. 
         [0083]    As described above the mounting portion  24  may include the first portion  24   a  and the second portion  24   b.  At the first portion  24   a,  there is no the cover side wire Y 4  nor the lower wire Yb. Alternately, a mounting portion may include a first portion and a second portion. A cover side wire and/or lower wire may include a first wire portion extending at the first portion and a second wire portion extending at the second portion. The diameter of the first wire portion is smaller than the diameter of the second wire portion. 
         [0084]    The stationary member and suspension member may be wire made of metal, iron, resin or the like. Alternately, the stationary member and suspension member may be plate or bar or the like. The stationary member and suspension member may be formed from one or more parts.