JP2015097596A - Vehicular seat pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat pad provided with a linear member which dispenses with bending processing and partially has different elastic moduli.SOLUTION: A vehicular seat pad includes foam and a resin wire 7 (12) which is insertion-molded to the foam and to which a locking part of a skin is locked. The resin wire 7 (12) is formed by impregnating a plurality of filaments 7a with a resin 7b and includes a thickness-reduced part 14 formed by reducing the thickness of the resin 7b.

Description

  The present invention relates to a vehicle seat pad.

In a vehicle seat cushion or a seat back, a foam that can be deformed by receiving a load from an occupant is used as a member constituting a vehicle seat pad.
Moreover, according to the following patent document 1, the linear member is embed | buried by the insert molding in the foam which comprises the vehicle seat pad. And the locking tool provided in the outer skin latches to a linear member, and the outer skin which covers a vehicle seat pad does not shift.
Furthermore, a plurality of locking tools provided on the skin are provided on the back side of the skin along the stitch (seam). For this reason, when the load from the occupant is released and the vehicle seat pad returns to its original shape, the stitches extend along the linear member, and the skin between the stitches also extends to suppress the occurrence of wrinkles. It has become.

JP 2012-176667 A

  However, in patent document 1, the steel wire was used as a linear member. For this reason, a complicated shape is requested | required of a linear member, and the bending process of a steel wire may be required, and a great effort was spent. In addition, the elastic modulus of the steel wire could not be partially changed.

  Therefore, the present invention was devised in view of the above-described background, and includes a vehicle seat pad provided with a linear member that does not require bending and has partially different elastic moduli. The issue is to provide.

  As a means for solving the above-mentioned problems, a vehicle seat pad according to the present invention includes a foam and a resin wire that is insert-molded in the foam and is locked by a locking portion of an outer skin. The pad is characterized in that the resin wire is formed by impregnating a resin into a plurality of long fibers and has a thinned portion in which the resin is thinned.

According to the vehicle seat pad according to the invention, since the resin wire has the thinned portion, it can be bent, and bending work is not necessary.
In addition, by providing a thinned portion in the resin wire, the elastic force of the resin wire can be partially changed, in other words, the elastic modulus can be suppressed. And since the elastic force of the resin wire is suppressed, it comes to bend along the body of the seated occupant, and the comfort when seated is improved.
Furthermore, according to the resin wire in which a plurality of long fibers are impregnated with resin, there is no possibility that the resin wire is divided because the long fibers are continuous in the lightening portion.

  Moreover, it is preferable that the said long fiber is exposed from the said lightening part.

  According to the configuration described above, the foam material is impregnated into the long fiber during the insert molding, and the bond between the foam and the resin wire becomes strong.

  Moreover, it is preferable that the said lightening part is provided in the bending part of the said resin wire.

  According to the configuration described above, the shape of the resin wire can be deformed by bending the bent portion.

  ADVANTAGE OF THE INVENTION According to this invention, while making a bending process unnecessary, the vehicle seat pad provided with the resin wire which can have a partially different elasticity modulus can be provided.

It is the perspective view which looked at the vehicle seat which concerns on embodiment from the upper left front side. It is the top view which planarly viewed the vehicle seat pad. (A) is the cross-sectional perspective view which looked at the cross section which cut the resin wire, (b) is the top view which planarly viewed the 1st resin wire in which the thinning part was formed, (c) and (d) are the thinning parts It is the top view which planarly viewed the 1st resin wire provided with. 2A is a cross-sectional view taken along line AA in FIG. 2, FIG. 2B is a cross-sectional view taken along line BB in FIG. 2, and FIG. 2C is a cross-sectional view taken along line CC in FIG. (D) is sectional drawing of the DD line of FIG. 2 at the arrow view. It is sectional drawing which shows the state which C ring of the outer skin latched to the resin wire. It is the top view which planarly viewed the lower mold | type. It is the perspective view which looked at the resin wire clamped by the protrusion part of 3 sets. (A) is a cross-sectional view taken along line EE in FIG. 6, (b) is a cross-sectional view taken along line GG in FIG. 6, and (c) is a cross-sectional view taken along line HH in FIG. It is. It is the top view which planarly viewed the state where the 2nd resin wire concerning a modification was pinched by a plurality of projections.

  Next, embodiments of the present invention will be described with reference to the drawings. In the embodiment, an example in which the present invention is applied to a seat cushion 2 of a vehicle seat 1 will be described. In addition, this invention is not limited to the seat cushion 2, You may apply to the seat back 3 which comprises the vehicle seat 1. FIG.

As shown in FIG. 1, the seat cushion 2 is a member constituting a seat surface on which a vehicle occupant sits down, and includes a vehicle seat pad 4 that forms a seat surface substantially parallel to the floor F, and a vehicle seat. And a skin 5 for covering and decorating the pad 4.
As shown in FIGS. 1 and 2, the vehicle seat pad 4 includes a foam 6 having a substantially rectangular shape in plan view and a plurality of resin wires 7 arranged along the stitches 5 a of the skin 5. Has been.
As shown in FIG. 2, in this embodiment, two types of resin wires 7 having different shapes are used. The first is a first resin wire 12 having a substantially C-shape in plan view that opens forward, and the second is two second resin wires 13 that extend in the left-right direction inside the first resin wire 12. . Hereinafter, the resin wire 7 will be described.

As shown in FIG. 3A, the resin wire 7 is a linear member having a diameter of 1 mm to 5 mm in which a plurality of long fibers 7a are impregnated with a resin 7b and the plurality of long fibers 7a are integrated by curing the resin 7b. It is. In addition, the resin wire illustrated in FIG. 3A is drawn by cutting out the upper half in order to explain the inside of the resin 7b.
The resin wire 7 has a relatively high rigidity and maintains a linear shape by an elastic force even when the resin wire 7 is pressurized by foaming of the foam material.
Moreover, inorganic fiber or organic fiber is mentioned as the above-mentioned long fiber 7a. Inorganic fibers include glass fibers, basalt fibers, and carbon fibers, and organic fibers include polyester fibers, polyethylene naphthalate fibers, and aramid fibers.
Examples of the resin 7b impregnated into the long fibers 7a include polypropylene resin, nylon 6, nylon 12, polyamide resin including nylon 6-6, and polyester resin.
In addition, the outer peripheral surface of the resin wire 7 is preferably subjected to any one of atmospheric plasma treatment, flame treatment, corona treatment, and primer treatment using chlorinated polypropylene. This is because the adhesiveness between the resin wire 7 and the foam is increased.

As shown in FIG. 3 (b), the first resin wire 12 can be bent by forming a plurality of thinned portions 14 with respect to one resin wire 7, and has three linear shapes. It is comprised from the linear part 12a and the two bending parts 12b in which the several lightening part 14 was provided.
Here, the thinned portion 14 means that the resin 7b is thinned and the first resin wire 12 can be easily bent, and the thickness of the thinned resin 7b is not particularly limited. . Therefore, when the outer peripheral surface of the resin 7b is notched as shown in FIG. 3C, or as shown in FIG. The case where it is divided is included in the meat removal part 14.
Further, as shown in FIGS. 3C and 3D, it is desirable that the long fiber 7a is exposed in the thinned portion 14 by the thinning of the resin 7b. This is because the foam material is impregnated into the long fibers 7a at the time of insert molding described later, and the bond between the first resin wire 12 and the foam 6 is strengthened.
As a method of forming the light-extracted portion 14, there is a method in which a thermoplastic resin impregnated in the long fibers 7a is extruded and formed into a rod shape, and the thermoplastic resin immediately after the extrusion molding is fitted into a mold having unevenness. Can be mentioned. According to this, the uncured thermoplastic resin is cured in the mold immediately after the extrusion molding, and the thinned portion 14 can be formed at a location corresponding to the projection of the mold.
Moreover, as a tool for forming the lightening part 14, it is not restricted to the formwork in which the unevenness | corrugation was provided. For example, a pair of rollers that partially sandwich the thermoplastic resin immediately after extrusion may be used. According to this, the lightening part 14 can be formed in the location pinched and crushed by a pair of rollers.
Furthermore, if the thermoplastic resin hardens immediately after extrusion and cannot be molded with a mold or a pair of rollers, the extruded thermoplastic resin is heated again and molded with a mold or a pair of rollers. Also good.
Further, when the thermoplastic resin is cured immediately after the extrusion molding, in addition to the above-described method of heating again, the bar-shaped resin wire 7 which has been cured and pulled out by a roller is cut by a grinder to form the lightening portion 14. The method of doing is also mentioned.
As shown in FIG. 2, the first resin wire 12 is substantially C-shaped in plan view when the bent portion 12 b formed with the plurality of lightening portions 14 is bent, and is embedded in the foam 6. ing. Note that the second resin wire 13 is not particularly provided with the lightening portion 14 but is the resin wire 7 itself.

The foam 6 is relatively soft and can be deformed into a shape that conforms to the body shape, such as the waist of the occupant seated by being sunk by the occupant sitting.
The foam 6 is formed in a desired shape by foaming a foam material (urethane raw material) in the cavity of the mold.
Further, as shown in FIGS. 2 and 4 (a) to 4 (d), a resin wire 7 is embedded on the upper surface side of the foam 6 (see particularly FIG. 4 (a)), and A plurality of recesses 8 opening toward the embedded resin wire 7 are formed (see particularly FIGS. 4B to 4D).
In addition, a tension | tensile_strength protrudes in the part by which the resin wire 7 was embed | buried in the upper surface of the foam 6. FIG.

The recess 8 is a hole for allowing the C-ring 5d, which is a locking portion provided on the back side of the skin 5, to enter and lock the C-ring 5d to the resin wire 7 (see FIG. 5).
The recesses 8 are provided as a set of three with respect to the linear portion of the resin wire 7. In addition, in the case of the 1st resin wire 12, the linear part of the resin wire 7 points out one linear part 12a among the three linear parts 12a, and in the case of the 2nd resin wire 13, the 2nd resin wire 13 itself. Point to. Therefore, the first resin wire 12 is provided with a set of three recesses 8 in each of the three linear portions 12a.
Hereinafter, in the present embodiment, among the three straight portions 12a constituting the first resin wire 12, three concave portions 8 provided for the straight portions 12a extending in the left-right direction will be described as an example.

As shown in FIG. 2, the three recesses 8 constituting one set have a left recess 8a and a center recess 8b that are provided so as to overlap the left, center, and right portions of the straight portion 12a in plan view. The right concave portion 8c is used.
Each of the left concave portion 8a, the central concave portion 8b, and the right concave portion 8c corresponds to the C ring 5d provided on the back surface side of the skin 5, and positioning when the C ring 5d is locked to the linear portion 12a. Has become easier.

As shown in FIGS. 4B to 4D, the left concave portion 8a and the right concave portion 8c are formed in the same shape, and the left concave portion 8a, the right concave portion 8c, and the central concave portion 8b are centered on a line extending vertically. As shown in FIG. Therefore, in the description of the shape of the recess 8, the left recess 8 a will be described as a representative example.
The left recessed portion 8a includes an opening 9 that opens between the upper surface of the foam 6 and the straight portion 12a, and a groove 10 that extends downward from the opening 9 and extends below the straight portion 12a.
The opening 9 is formed larger than the diameter of the straight portion 12a, and the C-ring 5d can easily enter. The groove portion 10 is a space for facilitating the locking of the C-ring 5d by causing one end of the C-ring 5d to go around below the straight portion 12a.
In addition, the groove part 10 of the left recessed part 8a and the right recessed part 8c is formed in the back side rather than the linear part 12a, and the direction which makes one end of the C ring 5d enter into the groove part 10, and is locked to the linear part 12a is forward. It has become.
On the other hand, the groove portion 10 of the central portion 8b is formed in front of the straight portion 12a, and the direction in which one end of the C-ring 5d enters the groove portion 10 and is locked to the straight portion 12a is the rear, It is opposite to the two C-rings 5d.

  As shown in FIG. 5, the skin 5 is a bag-like member formed by stitching the ends of a plurality of cover pieces 5b. Moreover, the edge part of the cover piece 5b sewn is sewn in the state bent to the back surface side of the outer skin 5. FIG. Therefore, the stitched portion 5 c is hidden on the back side of the skin 5, while the stitch 5 a appears on the surface side of the skin 5.

A C-ring 5d is provided on the stitched portion 5c of the epidermis 5 as a locking tool for locking to the linear portion 12a. A plurality of the C-rings 5d are provided along the stitched portion 5c, in other words, along the stitch 5a. For this reason, the relative displacement of the skin 5 with respect to the vehicle seat pad 4 is prevented, and the stitch 5a extends along the linear member, so that the skin 5 is less likely to be wrinkled.
In the embodiment, a description is given using the skin 5 formed by stitching a plurality of cover pieces 5b. However, the present invention is not limited to this, and the middle portion of the cloth member is folded into a valley shape and stitched. Then, the skin 5 in which the stitch 5a is formed may be used.

Next, a method for manufacturing the vehicle seat pad 4 will be described.
The manufacturing method of the vehicle seat pad 4 is performed in the order of a mold preparation step, a foam material introduction step, a foaming step, and a die cutting step.

In the mold preparation step, a release material is sprayed on a mold set at a predetermined position, and a resin wire 7 is arranged on the mold.
As shown in FIG. 6, the mold according to the present embodiment includes an upper mold (not shown) and a lower mold 20, and the lower mold 20 molds the upper side of the vehicle seat pad 4, The lower side of the vehicle seat pad 4 is molded by the upper mold (not shown).

  As shown in FIG. 6, the lower mold | type 20 is a metal block by which the upper part was open | released, and the die cutting direction which extracts a molding is upward. The bottom surface 20a of the lower mold 20 is a surface constituting a cavity surface that forms the upper surface of the vehicle seat pad 4, and a plurality of projecting portions 21 projecting upward in the mold release direction are provided on the bottom surface 20a. ing.

The protruding portions 21 are members for sandwiching the linear portion of the resin wire 7, and are provided as a set of three with respect to the linear portion of the resin wire 7. Therefore, in the case of the 1st resin wire 12, the protrusion part 21 is provided in each of the three linear parts 12a as a set.
In the present embodiment, the configuration of the protruding portion 21 will be described by taking the straight portion 12a extending in the left-right direction as an example among the three straight portions 12a constituting the first resin wire 12 extending in the left-right direction.

As shown in FIG. 7, the three projecting portions 21 constituting one set include a left projecting portion 21 a projecting corresponding to each of the left portion, the center portion, and the right portion of the straight portion 12 a, and the center projecting portion 21 b. And the right protruding portion 21c.
Moreover, as shown to Fig.8 (a)-(c), the left protrusion part 21a and the right protrusion part 21c are formed in the same shape. On the other hand, the central protruding portion 21b is formed symmetrically with respect to the left protruding portion 21a and the right protruding portion 21c with a line extending vertically as a center line.

As shown in FIG. 8 (a), a concave surface 22 is formed on the front side surface of the left protruding portion 21a. The lower surface 23 of the concave surface 22 is a horizontal surface and constitutes a mounting surface on which the linear portion 12a is mounted.
The upper surface 24 of the concave surface 22 is an inclined surface that extends upward from the rear of the linear portion 12a, and constitutes a contact surface with which the rear upper side of the linear portion 12a placed on the lower surface 23 contacts. From the above, the left projecting portion 21 a holds the lower side and the rear upper side of the left portion of the linear portion 12 a by the lower surface 23 and the upper surface 24.
Therefore, as shown in FIG. 7, even if a force (see arrow I in FIG. 7) that causes the left portion of the straight portion 12a to move backward due to foaming of the foam material is received, the left portion of the straight portion 12a. Is restricted from moving backwards.

  Further, as shown in FIG. 8C, the right protruding portion 21c formed in the same shape as the left protruding portion 21a holds the lower side and the upper rear side of the right portion of the linear portion 12a by the lower surface 23 and the upper surface 24. doing. For this reason, as shown in FIG. 7, even when a force (see arrow M in FIG. 7) that causes the right portion of the straight portion 12a to move backward due to foaming of the foam material is received, the right portion of the straight portion 12a. Is restricted from moving backwards.

On the other hand, as shown in FIG. 8 (b), on the rear side surface of the central projecting portion 21b formed symmetrically with the line, a horizontal lower surface 23 and an upper surface 24 which is an inclined surface directed upward from the front of the straight portion 12a. And a concave surface 22 is formed. Therefore, the central projecting portion 21b holds the lower side and the front upper side of the central portion of the linear portion 12a by the lower surface 23 and the upper surface 24.
For this reason, as shown in FIG. 7, even if a force (see an arrow L in FIG. 7) that the central portion of the linear portion 12a moves forward by foaming of the foam material is received, the central portion of the linear portion 12a. Is restricted from moving forward.

Further, as shown in FIGS. 8A to 8B, the upper surfaces 24 of the left protruding portion 21a and the right protruding portion 21c abut on the rear upper side of the straight portion 12a, and the upper surface 24 of the central protruding portion 21b is the resin wire 7. The front part is in contact with the upper side. For this reason, even if the straight portion 12a receives a force that moves upward, the straight portion 12a is sandwiched between the upper surface 24 of the left protruding portion 21a and the right protruding portion 21c and the upper surface 24 of the central protruding portion 21b. Is restricted from moving upward.
In addition, the downward movement of the linear portion 12a is restricted by the lower surfaces 23 of the left protruding portion 21a, the central protruding portion 21b, and the right protruding portion 21c.

Further, in the set of three projecting portions 21, the central projecting portion 21b disposed at the center is disposed on the opposite side to the other left projecting portion 21a and right projecting portion 21c with the straight portion 12a interposed therebetween. The following effects can be obtained.
As shown in FIG. 7, there is a case where the left portion of the straight portion 12a is subjected to a force (see arrow J in FIG. 7) that moves to the front where the left protruding portion 21a is not provided due to foaming of the foam material. .
Here, since the center protruding portion 21b is sandwiched so as not to move forward in the central portion of the straight portion 12a, the left portion of the straight portion 12a is moved backward by the elastic force of the straight portion 12a. Force (see arrow I in FIG. 7) works. For this reason, the left part of the straight part 12a is maintained in the left protruding part 21a without moving forward.

Similarly, even if a force (see arrow K in FIG. 7) is applied that causes the central portion of the straight portion 12a to move backward due to foaming of the foam material, both ends of the straight portion 12a are sandwiched, An elastic force (see arrow L in FIG. 7) that moves forward acts, and does not move backward.
Further, even if a force (see the arrow N in FIG. 7) that moves the right portion of the straight portion 12a forward due to foaming of the foam material is received, the elastic force that moves backward (arrow M in FIG. 7). ) Is working, so that it does not move forward.
As described above, the set of three projecting portions 21 regulates the entire straight portion 12a so as not to move upward, backward, downward, and forward, that is, not to move in the radial direction of the straight portion 12a. .

In addition, the three projecting portions 21 constituting one set are fixed to the lower mold 20 so as to correspond to the C-ring 5 d provided on the skin 5. For this reason, on the upper surface of the foamed body 6 formed by the mold, a recess 8 is formed which is a trace of the protruding portion 21 and opens corresponding to the C ring 5d provided on the skin 5 (FIG. 4 (b) to (d)).
Further, as shown in FIGS. 8A to 8C, the length in the front-rear direction on the base 25 side of the protruding portion 21 (the portion below the lower surface 23 of the concave surface 22) is larger than the diameter. Yes. For this reason, the opening part 9 opened larger than the diameter of the resin wire 7 is formed in the recessed part 8 of the foam 6 (refer FIG.4 (b)-(d)). In addition, the groove | channel part 10 of the recessed part 8 is formed by the site | part arrange | positioned above the base part 25 in the protrusion part 21 (refer FIG.4 (b)-(d)).

Further, as shown in FIG. 6, in order to install the first resin wire 12 with respect to the lower mold 20 described above, the bent portion 12b is refracted to make the first resin wire 12 substantially C-shaped in plan view. And the 1st resin wire 12 is installed so that it may be clamped by the protrusion part 21 of the lower mold | type 20, and the substantially C-shaped opening part may face the front.
Further, the second resin wire 13 is sandwiched between the protrusions 21 of the lower mold 20 without being bent. Thereby, the 2nd resin wire 13 is installed so that it may extend in the left-right direction inside the 1st resin wire 12. FIG.

  In the next foam material introduction step, the foam material stock solution is introduced into the lower mold 20 and the lower mold 20 is clamped with an upper mold (not shown). The amount of the foam material stock solution is about one fifth of the volume occupied by the cavity.

In the next foaming step, the internal foam material is heated by heating the mold to foam the foam material. According to this, the foam 6 having the same shape as the cavity is formed by expanding and curing the stock solution of the foam material.
Since the resin wire 7 is regulated so as not to move in the radial direction of the resin wire 7 as described above, even if the resin wire 7 receives a force due to the expansion of the stock solution of the foam material, the foam 6 is not displaced. Insert molding.

In the next mold drawing step, the upper mold (not shown) is removed from the lower mold 20 to open the upper side of the lower mold 20, and the foam 6 is extracted from the lower mold 20 upward.
Here, the resin wire 7 is pulled upward by the extraction of the foam 6, and the upper surface 24 of the protrusion 21 presses the resin wire 7, so that the foam 6 in the vicinity where the resin wire 7 is embedded is recessed. Then, the resin wire 7 moves upward along the upper surface 24 that is the slope of the protruding portion 21 and is detached from the three protruding portions 21.
From the above, the vehicle seat pad 4 insert-molded in the foam 6 without the resin wire 7 being displaced is manufactured.
Further, on the upper surface of the foam 6 of the vehicle seat pad 4 manufactured by the above-described manufacturing method, a recess 8 that is a trace of the plurality of protrusions 21 and opens toward the resin wire 7 is formed.

  As described above, according to the vehicle seat pad 4 according to the embodiment, the bend portion 14 is provided in the bent portion 12b of the first resin wire 12 so as to be bent. For this reason, a bending process becomes unnecessary and it can avoid spending a lot of labor.

  Moreover, according to the vehicle seat pad 4 according to the embodiment, since the resin wire 7 having a lower elastic modulus than that of the steel wire is used, it is bent along the body of the seated occupant and comfort when seated. Can be improved.

  Moreover, according to the vehicle seat pad 4 according to the embodiment, the first resin wire 12 can be stored in a linear state until the first resin wire 12 is installed in the lower mold 20 (see FIG. 3B). Since the space occupied by the first resin wire 12 during storage is narrower than the space occupied by a steel wire bent into a substantially C shape by bending or a resin member previously formed in a substantially C shape in plan view. Excellent storage.

The vehicle seat pad 4 according to the embodiment has been described above, but the present invention is not limited to the example described in the embodiment.
In this embodiment, in order to provide the first resin wire 12 with the bent portion 12b, in other words, to form the resin wire 7, the lightening portion 14 is formed. However, the present invention is not limited to this. Not.
For example, the thinned portion 14 may be provided entirely or partially on the straight portion 12 a of the first resin wire 12 or the second resin wire 13. This is because the elastic force of the linear portion 12a of the first resin wire 12 and the second resin wire 13 can be suppressed.
Further, when the thinned portion 14 is provided in the second resin wire 13, the tension at the center of the upper surface of the vehicle seat pad 4 in which the second resin wire 13 is embedded is suppressed. According to this, as compared with the case where the second resin wire 13 is not provided with the thinned portion 14, the center portion of the upper surface of the vehicle seat pad 4 is formed along the seated occupant's body, It is possible to further improve the comfort at the time.
In addition, the elastic force of the second resin wire 13 can be changed by increasing or decreasing the number of the lightening portions 14 and the length of the lightening portions 14.

In addition, as a means for fixing the 2nd resin wire 13 provided with the lightening part 14 to the lower mold | type 20 in the linear state, as shown in FIG. 9, edge part 13a, 13a of the 2nd resin wire 13 is shown. A plurality of protrusions 21 that sandwich each of the above are mentioned. Further, the plurality of protruding portions 21 are formed so that the second resin wire 13 is pulled in the left-right direction by sandwiching the end portions 13 a and 13 a of the second resin wire 13. According to this, the 2nd resin wire 13 is extended in the left-right direction, without contact | abutting to the bottom face 20a of the lower mold | type 20, and the 2nd resin wire 13 is insert-molded linearly.
When the length of the second resin wire 13 is relatively long, a base 26 on which the second resin wire 13 can be placed may be installed on the lower mold 20 as shown in FIG.

2 Seat cushion 4 Vehicle seat pad 5 Skin 5a Stitch 5d C-ring (locking part)
6 Foam 7 Resin wire 7a Long fiber 7b Resin 8 (8a, 8b, 8c) Recessed part 12 First resin wire 12a Bent part 13 Second resin wire 14 Meat part 20 Lower mold 21 (21a, 21b, 21c) Protruding part

Claims (3)

A vehicle seat pad comprising a foam and a resin wire that is insert-molded in the foam and is engaged with an engagement portion of an outer skin,
The resin wire is formed by impregnating a plurality of long fibers with a resin, and has a thinned portion in which the resin is thinned.   The vehicle seat pad according to claim 1, wherein the long fibers are exposed from the lightening portion.   The vehicle seat pad according to claim 1 or 2, wherein the lightening portion is provided at a bent portion of the resin wire.

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