JP5613613B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat in which a seat pad is covered with a seat skin in which a urethane foam slab is provided on the back surface of a skin material made of genuine leather.

  Patent Document 1 below discloses a seat cover that covers a seat of a vehicle or the like. In this seat cover, a cover pad made of urethane foam slab is bonded to the back surface of a skin material made of fabric, PVC leather, etc., and a back base fabric made of nonwoven fabric is bonded to the back surface of the cover pad. . The back base fabric is provided with elongated stripping means (embossed, slit-shaped slots, etc.) in a staggered manner, and the back base fabric is made to follow the elastic deformation of the cover pad when the occupant is seated. They are deformed (expanded). This prevents the seat cover from being folded and wrinkled.

JP-A-9-173684

  By the way, when the skin material is a fabric or a vinyl chloride leather as in the above-described seat cover (seat skin), it is generally bonded (hot-bonded or the like) to the urethane foam slab in mass production equipment. .

  On the other hand, when the skin material is made of real leather, it is difficult to bond it to the urethane foam slab with mass production equipment, so it is possible to sew the outer periphery of the skin material and urethane foam slab. Generally done. Depending on the direction of the bend, the so-called “floating” occurs when a part other than the stitched portion of the leather cover material swells away from the urethane foam slab, depending on the direction of bending. The appearance quality of the sheet may deteriorate.

  The present invention has been made in consideration of the above facts, and an object of the present invention is to obtain a vehicle seat that can effectively suppress the occurrence of floats and wrinkles on a skin material made of genuine leather.

According to a first aspect of the present invention, there is provided a vehicular seat, the seat pad having at least a part of a surface formed by a concave curved surface, and the seat pad covered with the skin material covered with a leather cover. The urethane foam slab disposed between the skin material and the seat pad is adhered to the back surface of the skin material, and a slit or a notch that does not penetrate the urethane foam slab is formed in the urethane foam slab. The urethane foam slab includes a sheet skin provided with a fragile portion at a portion facing the center side of the concave curved surface.

  In the vehicle seat according to claim 1, the seat cover in which the urethane foam slab is bonded to the back surface of the main cover material is covered with the seat pad. Since at least a part of the surface of the seat pad is configured by a concave curved surface, the outer skin material and the urethane foam slab are covered with the seat pad in a state of being bent along the concave curved surface. . For this reason, the urethane foam slab is stretched in the curved direction of the concave curved surface, whereas the main skin material is compressed by the elastic restoring force of the urethane foam slab. Since this compressive force is concentrated on the main skin material on the center side of the concave curved surface, “floating” is likely to occur in the main skin material at the portion. In this regard, in the present invention, since the main skin-made skin material and the urethane foam slab are bonded as described above, the occurrence of “floating” can be effectively suppressed.

Moreover, since the fragile portion is provided in the portion facing the central side of the concave curved surface in the urethane foam slab, the elastic restoring force of the urethane foam slab is reduced by intensively extending the fragile portion. The As a result, the compressive force acting on the main skin material is also reduced, so that it is possible to effectively suppress the occurrence of fine wrinkles (so-called “Chilejiwa”) due to the compressive force in the main skin material. Furthermore, in the present invention, a portion of the urethane foam slab (a portion facing the central side of the concave curved surface) is provided with a fragile portion, and since the fragile portion is not uniformly provided in the urethane foam slab, It is possible to avoid the urethane foam slab from being weakened more than necessary. Moreover, since a weak part is provided in the said urethane foam slab by forming a mere slit or notch in a urethane foam slab, the structure of a weak part can be made simple.

  According to a second aspect of the present invention, there is provided a vehicle seat according to the first aspect, wherein the vehicle seat according to the first aspect is provided with an inverse-shaped portion warped so as to dent the surface side of the seat pad on a side portion of the seat pad. In this case, the seat pad is provided with the concave curved surface.

  In the vehicle seat according to claim 2, since the inversely shaped portion that is warped so as to dent the surface side of the seat pad is provided on the side portion of the seat pad, when an external force is input to the side surface of the seat pad First, the seat pad is deformed so that the inverse shape portion is further warped. In this case, the seat pad will be deformed so that the concave curved surface of the seat pad is further recessed, and the skin material of the seat skin is likely to float and wrinkle.In the present invention, the structure as described above is used. It is possible to effectively suppress the occurrence of floating and wrinkles.

A vehicle seat according to a third aspect of the present invention is the vehicle seat according to the first or second aspect , wherein the urethane foam slab is formed without the plurality of slits or notches being connected to each other. It is characterized by being.

In the vehicle seat according to claim 3 , since the plurality of slits or cuts formed in the urethane foam slab are divided without being connected to each other, the shape of the slits or cuts emerges on the surface side of the skin-made skin material. You can avoid that.

A vehicle seat according to a fourth aspect of the present invention is the vehicle seat according to the third aspect , wherein the plurality of slits or cuts are formed in a straight line.

In the vehicle seat according to claim 4 , since the plurality of slits or cuts formed in the urethane foam slab are formed in a straight line, straight floats and wrinkles are generated in the main skin material. Effective when easy.

The vehicle seat according to a fifth aspect of the present invention is the vehicle seat according to any one of the first to fourth aspects, wherein the slit or the cut is a curve direction of the concave curved surface of the seat pad. It is characterized by being arranged in parallel with one side surface.

In the vehicle seat according to claim 5 , when an external force is input to the side surface on one side of the curved direction of the concave curved surface of the seat pad, when the seat pad is deformed in a direction in which the concave curved surface is further concave, And the urethane foam slab is bent along the concave curved surface. In this case, the skin material made of the leather is likely to generate floats and wrinkles extending in parallel with the side surface, but in the present invention, the slit or cut of the urethane foam slab is formed in parallel with the side surface, These slits or cuts can favorably reduce the compressive force of the main skin material. Therefore, it is possible to effectively suppress the occurrence of floating and wrinkles.

A vehicle seat according to a sixth aspect of the invention is the vehicle seat according to any one of the first to fifth aspects, wherein the vehicle seat is disposed between the urethane foam slab and the seat pad. It has a back base fabric bonded to the back surface of the urethane foam slab, and the back base fabric is characterized in that a slit is formed at a portion facing the slit or the notch .

In the vehicle seat according to claim 6 , since the back base fabric is bonded to the back surface of the urethane foam slab, when the seat cover is sewn, the back base fabric is sewn by sliding contact with a sewing machine or the like. Work can be performed smoothly. Moreover, since the slit is formed in the back base fabric at a portion facing the slit or notch of the urethane foam slab, the back base fabric can be expanded and contracted well by following the elastic deformation of the urethane foam slab. .

A vehicle seat according to a seventh aspect of the present invention is the vehicle seat according to any one of the first to sixth aspects, wherein the side surface of the seat pad faces the side wall of the passenger compartment. The rear seat back pad is provided on the rear seat back.

In the vehicle seat according to the seventh aspect , the seat skin in which the urethane foam slab is bonded to the back surface of the skin material made of the main skin is put on the rear seat back pad of the rear seat back. Thereby, the weak part provided in the urethane foam slab opposes the center side of the concave curved surface provided in the surface (front surface) of the rear seat back pad. Here, the above-described rear seat back is disposed such that the side surface faces the side wall of the passenger compartment. For this reason, when the side surface of the rear seat back interferes with the side wall of the passenger compartment due to variations when the rear seat back is assembled to the vehicle body, the rear seat back pad is deformed so that the concave curved surface is further recessed by the input from the side wall. . Even in such a case, in the present embodiment, it is possible to effectively suppress the occurrence of floating and wrinkles on the main skin-made skin material by the configuration as described above.

  As described above, in the vehicle seat according to the present invention, it is possible to effectively suppress the occurrence of floating and wrinkles on the skin material made of the leather.

It is a front view showing the composition of the upper part side of the rear seat back which is the backrest of the rear seat for vehicles concerning the embodiment of the present invention. FIG. 2 is a plan sectional view showing a cut surface along line 2-2 in FIG. 1. FIG. 3 is a cross-sectional plan view corresponding to FIG. 2 showing a state in which an inverse shape portion of a rear seat back pad is bent due to interference with a side wall of a passenger compartment. FIG. 3 is a perspective view showing a configuration of an upper side of a seat cover of the rear seat back shown in FIGS. 1 and 2 as viewed from the back side of the seat cover. It is a reverse view of the skin piece which comprises a part of sheet | seat skin shown by FIG. (A) And (B) is sectional drawing for demonstrating the compressive force which arises in the skin material made from this leather, (C) is the principle by which the said compressive force is reduced by the slit formed in the urethane foam slab. It is sectional drawing for demonstrating. It is a back view of the skin piece (comparative example) by which the skin material and urethane foam slab were sewn in the outer peripheral part. FIG. 3 is a cross-sectional plan view corresponding to FIG. 2 for explaining “floating” that occurs in the skin material of the present leather in the comparative example. It is a figure which shows the "floating" shown by FIG. 7 in the state seen from the front side of the rear seat back. It is a front view corresponding to FIG. 1 for demonstrating the other countermeasure plan for suppressing generation | occurrence | production of "a float".

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. Note that an arrow FR appropriately shown in each drawing indicates the vehicle front direction, an arrow UP indicates the vehicle upward direction, and an arrow OUT indicates the vehicle width direction outward (vehicle right direction).

  FIG. 1 is a front view showing a configuration of an upper side of a rear seat back 12 that is a backrest of a vehicle rear seat 10 (vehicle seat) according to the present embodiment. The front / rear / left / right / up / down directionality of the vehicle rear seat 10 matches the front / rear / right / left / upward direction of the vehicle on which the vehicle rear seat 10 is mounted. Further, as shown in FIG. 2, the rear seat back 12 is disposed such that the side surface on the outer side in the vehicle width direction is in contact with (opposed to) the side wall 14 (not shown in FIG. 1) of the passenger compartment. A rear seat cushion (not shown) is disposed on the lower end side of the rear seat back 12.

  The above-described rear seat back 12 includes a rear seat back pad 16 made of a foam material such as urethane foam, and a seat skin 18 (seat cover) that covers the rear seat back pad 16. A metal frame (not shown) is embedded in the rear seat back pad 16, and the rear seat back pad 16 is fixed to the vehicle body via the frame.

  The left and right sides of the upper part of the rear seat back pad 16 are respectively provided with inverse shape portions 16A (curved portions) that warp toward the front side of the seat (in FIG. 2, the rear seat back pad is shown due to the size of the drawing). 16 is omitted from the left side). The inverse shape portion 16A extends from the end in the seat width direction of the main body portion 16B of the rear seat back pad 16 to the outside in the seat width direction and slightly obliquely forward, and the front surface 20 (front surface) side of the rear seat back pad 16 is formed. Warps to dent. Thus, concave curved surfaces 20A are formed on both the left and right sides of the upper portion of the front surface 20 of the rear seat back pad 16. The concave curved surface 20A is configured by smoothly continuing a plurality of curved surfaces having different curvature radii, and the bending direction C is set so that the curved shape appears in the plane cross section of the rear seat back pad 16 shown in FIG. Has been.

  The above-described inverse shape portion 16A is set to have a smaller thickness dimension in the front-rear direction of the seat than the main body portion 16B of the rear seat back pad 16, and the rear cross section of the rear seat back pad 16 has the main body portion 16B and the inverse shape portion. There is a significant change at the connection with 16A. Therefore, as shown in FIG. 3, when an external force F is input to the side surface 22 of the rear seat back pad 16, the inverse shape portion is formed with the vicinity of the connection portion between the main body portion 16 </ b> B and the inverse shape portion 16 </ b> A as a bending base point. 16A bends to the vehicle front side. This bending base point is set on the center side in the bending direction of the concave curved surface 20A.

  On the other hand, the sheet skin 18 is sewn in a substantially bag shape by sewing a plurality of skin pieces including the skin pieces 24, 26, 28, 30, 32, and 34 shown in FIG. The plurality of outer skin pieces are sewn in an inverted state, whereby the seat outer skin 18 is sewn into a substantially bag shape in an inverted state, and the inverted inner surface skin 18 is reversed while being put on the rear seat back pad 16. A skin piece 28 that covers the upper surface of the rear seat back pad 16 and a skin piece (not shown) that covers the side surface of the rear seat back pad 16 are locked to a frame (not shown) embedded in the rear seat back pad 16 via a hog ring or the like. As a result, the seat skin 18 is attached to the rear seat back pad 16.

  As shown in FIG. 2 and FIG. 3, the skin piece 24 covering the upper part of the front surface 20 of the rear seat back pad 16 from the center to the right end is a skin material 40 made of a leather (hereinafter referred to as a skin material 40 made of a leather). And a urethane foam slab 42 (cover pad) that is adhered to the back surface of the main skin material 40 and disposed between the main skin material 40 and the rear seat back pad 16. In addition, although illustration is abbreviate | omitted, all the some skin pieces mentioned above are formed with the composite material which consists of a skin material made from a main skin, and a urethane foam slab.

  The skin piece 24 is stitched to the skin piece 26 that covers from the center to the left end of the upper portion of the front surface 20 of the rear seat back pad 16 (see FIGS. 1 and 4). These skin pieces 24 and 26 are formed in a symmetrical shape. As shown in FIGS. 2 and 3, the skin piece 24 on the right side of the sheet covers the concave curved surface 20A with the urethane foam slab 42 in close contact with the concave curved surface 20A on the right side of the sheet. Curved along 20A. Although not shown, the skin piece 26 on the left side of the seat covers the concave curved surface in a state where the urethane foam slab is in close contact with the concave curved surface on the left side of the seat, and is curved along the concave curved surface on the left side of the seat. .

  As shown in FIG. 4, a plurality (four in this case) of linear slits 46 extending in the height direction of the rear seat back pad 16 are formed in the vicinity of the center portion in the seat width direction of the respective skin pieces 24 and 26. Has been. These slits 46 are arranged in parallel with the side surface 22 (see FIG. 2) on one side of the concave curved surface 20A in the rear seat back pad 16 in the bending direction.

  The slits 46 are arranged in a dotted line at equal intervals. In other words, these slits 46 are not connected to each other and are arranged in a straight line in the height direction of the rear seat back pad 16, and the urethane foam slab 42 has a plurality of slits 46 around the fragile portions 48. Has been. The fragile portion 48 (the plurality of slits 46) of the skin piece 24 on the right side of the sheet is opposed to the central portion in the curved direction of the concave curved surface 20A on the right side of the sheet (see FIGS. 2 and 3). The fragile portion 48 (the plurality of slits 46) faces the central portion of the concave curved surface on the left side of the sheet (not shown).

  For the four slits 46 formed in the skin piece 24, the length dimension L1 shown in FIG. 5 is set to 25 mm, for example, and the interval L2 between the adjacent slits 46 is also set to 25 mm, for example. . Further, the slit 46 on the end side does not reach the outer peripheral end of the skin piece 24, and is between the slit 46 on the end side and the outer peripheral end of the urethane foam slab 42 (see the region indicated by E in FIG. 5). ), The slit 46 is not formed. FIG. 5 shows a state before the skin piece 24 is stitched with another skin piece. In addition, the above dimensional relationship is similarly set for the four slits 46 formed in the skin piece 26.

<Operation and effect of this embodiment>
Next, the operation and effect of this embodiment will be described. In addition, since the vehicle rear seat 10 according to the present embodiment is basically configured symmetrically, the following description will mainly describe the right side of the seat and omit the description of the left side of the seat.

  In the vehicular rear seat 10 having the above-described configuration, the seat skin 18 is formed in such a manner that the main skin-made skin material 40 and the urethane foam slab 42 of the skin piece 24 are bent along the concave curved surface 20A of the rear seat back pad 16. The back pad 16 is covered.

  Here, when the main skin-made skin material 40 and the urethane foam slab 42 superimposed as shown in FIG. 6 (A) are bent as shown in FIG. 6 (B), the urethane foam slab 42 is bent. While being stretched along the direction (see arrow Q), the skin material 40 is compressed by the elastic restoring force of the urethane foam slab 42 (see arrow P). Since this compressive force is concentrated on the center side in the bending direction of the main skin material 40, it is easy for “floating” to occur in the main skin material 40, but in this embodiment, the main skin material is used. Since the material 40 and the urethane foam slab 42 are bonded, the occurrence of “floating” can be effectively suppressed.

  That is, when the skin material is made of real leather, generally, the skin material 40 made of real leather and the urethane foam slab 42 are simply sewn together by the sewing thread 50 at the outer peripheral portion, like the skin piece 24 'shown in FIG. The center side of both is not joined. Such a skin piece 24 'is bent along the concave curved surface 20A, and as shown in FIGS. 8 and 9, floats on the surface skin-made skin material 40 on the center side in the curved direction of the concave curved surface 20A. May occur. On the other hand, in this embodiment, generation | occurrence | production of the float 52 is suppressed by the urethane foam slab 42 adhere | attached on the skin material 40 made from a main skin.

  As shown in FIG. 10, it is also conceivable to apply tension to the skin pieces 24 and 26 by dividing and sewing the skin pieces 24 and 26 at locations where “floating” is likely to occur. Even if it is such a structure, generation | occurrence | production of "a float" can be suppressed, However, The external appearance quality of a vehicle seat will fall by the stitching lines 54 and 56 increasing. In this respect, in the present embodiment, the occurrence of “floating” can be suppressed without increasing the number of stitching lines, which is preferable in improving the appearance of the vehicle seat.

  In addition, in the present embodiment, the urethane foam slab 42 is provided with the fragile portion 48 at a portion facing the central side in the bending direction of the concave curved surface 20A, and therefore, as shown in FIG. The elastic restoring force of the urethane foam slab 42 is reduced (opened) by intensively extending 48. This makes it possible to bend the skin cover material 40 in a low compression state, so that fine wrinkles (so-called “Chilejiwa”) due to the compressive force are effectively generated in the skin cover material 40. Can be suppressed.

  Thus, in this embodiment, since it can suppress effectively that a float and a wrinkle generate | occur | produce in the skin material 40 made from a leather, the external appearance quality of the vehicle rear seat 10 can be improved.

  In the present embodiment, the fragile portion 48 is provided in a part of the urethane foam slab 42 (a portion facing the central side in the bending direction of the concave curved surface 20A), and the fragile portion is provided uniformly in the urethane foam slab 42. Since it is not the structure formed, it can avoid that the urethane foam slab 42 is weakened more than necessary.

  Further, in the present embodiment, the concave shape 16A is provided on the side of the rear seat back pad 16 by providing the inverse shaped portion 16A that is warped so as to dent the front seat 20 side of the rear seat back pad 16. It has been. For this reason, when the side surface on the vehicle width direction outer side of the rear seat back 12 interferes with the side wall 14 of the passenger compartment due to variations when the rear seat back 12 is assembled to the vehicle body, as shown in FIG. The rear seat back pad 16 is deformed so that the inverse shape portion 16 </ b> A is further warped by the input of the external force F from the side wall 14. In this case, the rear seat back pad 16 is deformed so that the concave curved surface 20A is further recessed, and the skin material 40 is likely to be floated and wrinkled. The occurrence of floating and wrinkles can be effectively suppressed.

  In addition, since the fragile portion 48 of the urethane foam slab 42 is disposed so as to oppose a portion that is a bending base point of the rear seat back pad 16 (near the connecting portion between the main body portion 16B and the inverse shape portion 16A), the urethane foam slab The elastic restoring force generated in 42 can be effectively reduced. Thereby, since the compressive force which arises in the skin material 40 made from the skin due to the elastic restoring force can be effectively reduced, the occurrence of floating and wrinkles can be further effectively suppressed.

  Moreover, in this embodiment, since the weak part 48 is provided in the said urethane foam slab 42 by forming the simple slit 46 in the urethane foam slab 42, the structure of the weak part 48 is simplified. Can do. Furthermore, in this embodiment, since the plurality of slits 46 formed in the urethane foam slab 42 are not connected to each other and are divided into dotted lines, the shape of the slit 46 is formed on the surface side of the main skin material 40. It can be avoided to stand out. Further, since the plurality of slits 46 are formed side by side in a straight line, it is particularly effective in suppressing the generation of the straight floating 52 as shown in FIG.

  Further, in the present embodiment, the plurality of slits 46 are arranged in parallel with the side surface 22 on one side in the bending direction of the concave curved surface 20 </ b> A in the rear seat back pad 16. For this reason, it can suppress effectively that a float and a wrinkle generate | occur | produce in the main skin-made skin material 40 by the input of the external force F to the said side surface 22. FIG. That is, when the rear seat back pad 16 is deformed in a direction in which the concave curved surface 20A is further recessed by the external force F, the main skin material 40 is likely to generate floats and wrinkles extending parallel to the side surface 22, but in this embodiment, Since the plurality of slits 46 of the urethane foam slab 42 are formed in parallel with the side surface 22, the compression force of the main skin-made skin material 40 can be favorably reduced by these slits 46. Therefore, it is possible to effectively suppress the occurrence of floating and wrinkles.

<Supplementary explanation of the embodiment>
In the above-described embodiment, the case where the plurality of skin pieces of the seat skin 18 is constituted by the main skin-made skin material 40 and the urethane foam slab 42 has been described, but the back surface of the urethane foam slab 42 (on the rear seat back pad 16 side). The back base fabric made of nonwoven fabric or the like may be bonded to the surface). In this case, it is preferable to form a slit in the back base fabric at a portion facing the slit 46 of the urethane foam slab 42. Thereby, the back base fabric can be favorably expanded and contracted by following the elastic deformation of the urethane foam slab 42. In addition, if the process of forming a slit is provided after the adhesion | attachment process of the urethane foam slab 42 and a back base fabric, a slit can be simultaneously formed in both the urethane foam slab 42 and a back base fabric. Further, when the seat cover is sewn, the sewing work can be smoothly performed by bringing the back base fabric into sliding contact with a sewing machine or the like.

Moreover, in the said embodiment, although the several skin piece which comprises the sheet | seat skin 18 made all the structure manufactured using the skin material made from this skin, the invention which concerns on Claims 1-7 is this. However, the skin piece constituting the portion (for example, the upper surface or the side surface) that is not the main part of the sheet skin may be manufactured using a skin material other than the main skin. For example, in FIG. 1, the skin pieces 24, 26, 30, 32, and 34 are made of a real skin, while the skin piece 28 is made of a PVC leather or a fabric. Also good. Thereby, cost reduction of a sheet | seat skin can be achieved.

Further, in the above-described embodiment, the plurality of slits 46 of the urethane foam slab 42 are arranged in a straight line, and are arranged in parallel with the side surface 22 on one side in the curve direction of the concave curved surface 20A in the rear seat back pad 16. Although it comprised, the invention which concerns on Claims 1-3 , 6 , 7 is not restricted to this, The arrangement direction of a some slit shall be suitably changed according to the shape of the float and wrinkle which arise in the skin material made from this leather Can do.

Moreover, in the said embodiment, although it was set as the structure by which the four slits 46 were formed in the longitudinal direction without connecting with each other in the urethane foam slab 42, invention which concerns on Claims 1, 2, 5-7 However, the number of slits and the like can be changed as appropriate. For example, the urethane foam slab may have a configuration in which only one slit is formed, or a plurality of slits may be arranged in a staggered manner.

  Moreover, in the said embodiment, although the length dimension L1 and the space | interval L2 of the slit 46 were each set to 25 mm, the invention which concerns on Claims 1-8 is not restricted to this, The weak part represented by the slit The length and interval can be appropriately changed.

Furthermore, in the said embodiment, it was set as the structure by which the weak part 48 was provided in the said urethane foam slab 42 by forming the slit 46 in the urethane foam slab 42, However, The invention which concerns on Claims 1-7 is based on this Not limited to this, the configuration of the vulnerable part can be changed as appropriate. For example, you may make it the structure by which a weak part is provided by forming in the urethane foam slab the narrow groove-shaped notch which does not penetrate a urethane foam slab .

Further, in the above-described embodiment, the concave portion 20A is formed in the rear seat back pad 16 by providing the inverse shape portion 16A that is warped so that the surface side of the rear seat back pad 16 is recessed in the side portion of the rear seat back pad 16. Although it was set as the structure provided, the invention which concerns on Claim 1, 3-7 is not restricted to this, You may make it the structure which a seat pad is not provided with the inverse shape part. Moreover, in the said embodiment, although the concave curved surface 20A was made into the structure formed in the right-and-left both sides in the upper part of the front surface 20 of the rear seat back pad 16, the invention which concerns on Claims 1-8 is not restricted to this, A concave is carried out. The curved surface may be provided on at least a part of the surface or the outer surface of the seat pad.

Moreover, although the said embodiment demonstrated the case where this invention was applied with respect to the rear seat back 12 of the rear seat 10 for vehicles, the invention which concerns on Claims 1-6 is not restricted to this, It is applied with respect to a rear seat cushion. It can also be applied to the seat back and seat cushion of the vehicle seat front seat.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.

10 Vehicle rear seats (vehicle seats)
12 Rear seat back 14 Side wall of vehicle compartment 16 Rear seat back pad (seat pad)
16A Inverse shape part 18 Seat skin 20 Front (front surface) of rear seat back pad
20A Concave surface 22 Side surface of rear seat back pad 40 Skin material 42 Urethane foam slab 46 Slit 48 Vulnerable part

Claims (7)

A seat pad in which at least a part of the surface is constituted by a concave curved surface;
The placed over the seat pad, covering the concave surface by the leather skin material, disposed urethane foam slab between said skin material the seat pad is bonded to the back surface of the surface material, the urethane A sheet skin provided with a fragile portion at a portion facing the central side of the concave curved surface in the urethane foam slab by forming a slit in the foam slab or a notch that does not penetrate the urethane foam slab,
Vehicle seat equipped with   2. The concave curved surface is provided in the seat pad by providing an inverse shape portion warped so as to dent the front surface side of the seat pad on the side portion of the seat pad. The vehicle seat as described. The vehicle seat according to claim 1 or 2 , wherein the urethane foam slab is formed without a plurality of slits or notches being connected to each other. The vehicle seat according to claim 3 , wherein the plurality of slits or cuts are formed in a straight line. 5. The vehicle seat according to claim 1 , wherein the slit or the cut is arranged in parallel with a side surface on one side in a bending direction of the concave curved surface of the seat pad. 6. . The back base fabric is disposed between the urethane foam slab and the seat pad and bonded to the back surface of the urethane foam slab, and the back base fabric has a slit at a portion facing the slit or notch. The vehicle seat according to any one of claims 1 to 5 , wherein the vehicle seat is formed. The vehicle seat according to any one of claims 1 to 6 , wherein the seat pad is a rear seat back pad provided on a rear seat back whose side surface is disposed to face a side wall of a passenger compartment. Sheet.

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