JP2022112375A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat including a seat back frame which supports a headrest without processing a lower end part of a pillar.SOLUTION: The invention relates to a vehicular seat including: a seat back; a headrest provided on the seat back; and a seat back frame forming a framework of the seat back. The seat back frame includes: a pair of back side frames 11; an upper frame which connects the pair of back side frames; and headrest guides 17 which hold headrest pillars 31. The upper frame has holder parts 15 which respectively hold the headrest guides. Each holder part has a cover part 15c which covers a lower end part of a pillar held by the headrest guide at a lower end of the holder part.SELECTED DRAWING: Figure 5

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly to a vehicle seat having a seat back frame supporting a headrest pillar.

A vehicle seat includes a seat cushion, a seat back, and a headrest, and the seat back and the seat cushion are provided with a frame member forming a framework. The frame member is composed of an arch-shaped frame, and a headrest guide through which a pillar (also called a stay) hanging from the headrest is inserted is provided on the upper portion of the frame member. Conventionally, the headrest guide is attached to the upper portion of the frame member by welding or the like in a recess by press working or the like. Patent Document 1 discloses a headrest guide (referred to as a support bracket in Patent Document 1) attached to a fitting formed in a frame member.

JP 2013-248953 A

In a conventional vehicle seat, the pillar of the headrest is longer than the headrest guide, so when the pillar is inserted into the headrest guide, the lower end of the pillar is positioned below the lower end of the headrest guide. Therefore, the lower end of the pillar is processed into a hemispherical shape in preparation for contacting the back of the occupant (seat occupant) or going out from the seat back. However, since processing this hemispherical shape is costly and time-consuming, there has been a demand for a structure that holds the headrest without processing the lower end of the pillar.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat having a seat back frame that holds a headrest without processing the lower ends of pillars.

The object is a vehicle seat including a seat back, a headrest provided on the seat back, and a seat back frame forming a skeleton of the seat back, wherein the seat back frame comprises a pair of back side frames. and an upper frame that connects the pair of back side frames, and a headrest guide that holds the pillar of the headrest, the upper frame has a holder portion that holds the headrest guide, and the holder portion is solved by having a cover portion covering the lower end portion of the pillar held by the headrest guide at the lower end of the holder portion.

Since the holder portion of the upper frame has the cover portion that covers the lower end portion of the pillar, it is possible to prevent the lower end portion of the pillar from coming into contact with the back of the occupant or coming out of the seat back. Therefore, it becomes unnecessary to process the lower end portion of the pillar into a hemispherical shape.

Further, in the vehicle seat described above, the lower end of the cover portion may be positioned below the lower end portion of the pillar held by the headrest guide.
By locating the lower end of the cover portion below the lower end of the pillar, the pillar can be protected more reliably.

Further, in the vehicle seat described above, the upper frame has a plate-like first pan frame and a plate-like second pan frame, and the holder portion includes the first pan frame and the second pan frame. At least one of the frames is formed with a first concave portion extending in the vertical direction in conformity with the outer shape of the headrest guide. The headrest guide may be held by the pan frame sandwiching the headrest guide from the front of the seatback and the second pan frame sandwiching the headrest guide from the rear of the seatback.
By inserting the headrest guide into the first concave portion forming the holder portion and sandwiching the headrest guide between the first pan frame and the second pan frame, lateral shift of the headrest guide is prevented and the headrest guide is held more firmly. Become so.

In the vehicle seat described above, the upper frame may include a second concave portion extending vertically in conformity with an outer shape of the headrest guide and provided in the other of the first pan frame and the second pan frame. 1 is formed at a position facing the recess,
The holder section may hold the headrest guide by inserting the headrest guide into the first recess and the second recess.
By inserting the headrest guide into the first recess and the second recess that constitute the holder portion and sandwiching the headrest guide between the first pan frame and the second pan frame, the headrest guide is prevented from slipping sideways, and the headrest is more firmly attached. Guides will be retained.

In the vehicle seat described above, the first pan frame bulges forward of the vehicle seat and extends in the width direction of the vehicle seat. and a first brim portion extending from the upper end portion and/or the lower end portion of the projecting portion, and the first pan frame is shaped like a hat by the first swelling portion and the first brim portion. It may have a longitudinal section.
Since the first pan frame has a hat-shaped longitudinal section, the rigidity of the upper frame is improved.

In the vehicle seat described above, the second pan frame may include a second bulging portion that bulges rearwardly of the vehicle seat and extends in a width direction of the vehicle seat; and a second brim portion extending from the upper end portion and/or the lower end portion of the projecting portion, and the second pan frame is shaped like a hat by the second protruding portion and the second brim portion. It may have a longitudinal section.
Since the second pan frame has a hat-shaped longitudinal section, the rigidity of the upper frame is improved.

In the vehicle seat described above, the first pan frame and the second pan frame may be made of different materials.
By combining materials with different properties, it is possible to form an upper frame that takes advantage of the characteristics of each material. For example, one of the first pan frame and the second pan frame can be made lighter or stronger.

In the vehicle seat described above, the first pan frame and the second pan frame may be joined with a structural adhesive.
Bonding with adhesive reduces the amount of welding work required during assembly, making it easier to assemble the frame.

In the vehicle seat described above, the first pan frame may be made of high-strength steel.
By forming the first pan frame from a high-strength steel material, it is possible to form a frame that is lighter in weight and has a higher strength than in the case of being made of iron.

In the vehicle seat described above, the second pan frame may be made of resin or aluminum.
By forming the second pan frame from resin or aluminum, it is possible to form a frame that is less expensive or lighter than a frame made of iron.

According to the present invention, the holder portion of the upper frame has the cover portion that covers the lower end portion of the pillar, thereby preventing the lower end portion of the pillar from coming into contact with the back of the occupant or coming out of the seat back. . Therefore, it becomes unnecessary to process the lower end portion of the pillar into a hemispherical shape.
In addition, since the lower end of the cover portion is located below the lower end of the pillar, the pillar can be protected more reliably.
Further, by inserting the headrest guide into the first concave portion that constitutes the holder portion and sandwiching the headrest guide between the first pan frame and the second pan frame, the headrest guide is prevented from slipping laterally, and the headrest guide is more firmly held. will be retained.
Further, by inserting the headrest guide into the first recess and the second recess that constitute the holder portion and sandwiching the headrest guide between the first pan frame and the second pan frame, the headrest guide is prevented from slipping laterally and is stronger. to hold the headrest guide.
Further, since the first pan frame has a hat-shaped longitudinal section, the rigidity of the upper frame is improved.
Further, since the second pan frame has a hat-shaped longitudinal section, the rigidity of the upper frame is improved.
Also, by combining materials with different properties, it is possible to form an upper frame that takes advantage of the characteristics of each material. For example, one of the first pan frame and the second pan frame can be made lighter or stronger.
Also, by joining the first pan frame and the second pan frame with an adhesive, the welding work during assembly can be reduced, and the frames can be assembled more easily.
Also, by forming the first pan frame from a high-strength steel material, it is possible to form a frame that is lighter in weight and has a higher strength than in the case of being made of iron.
In addition, by forming the second pan frame from resin or aluminum, it is possible to form a frame that is less expensive or lighter than a frame made of iron.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of the appearance of a vehicle seat according to an embodiment of the present invention, viewed obliquely from the front; Fig. 2 is a perspective view of the seat frame of the vehicle seat, viewed obliquely from the front; It is the figure which looked at the upper frame of the seat back frame from the front. It is the figure which looked at the upper frame of the seat back frame from the back. FIG. 4 is a plan view along line VV of FIG. 3; 4 is a cross-sectional view taken along line VI-VI of FIG. 3; FIG. FIG. 4 is a cross-sectional view taken along line VII-VII of FIG. 3; FIG. 8 is a cross-sectional view showing another example of the upper frame; FIG. 8 is a cross-sectional view showing another example of the upper frame;

A configuration of a vehicle seat according to an embodiment of the present invention will be described below with reference to the drawings. However, the embodiments described below are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. That is, the present invention can be modified and improved without departing from its spirit, and the present invention includes equivalents thereof.
In addition, in the following description, the material, shape, and size of the seat component are merely specific examples, and do not limit the present invention.

In the following, as an example of a vehicle seat, a vehicle seat mounted in a vehicle will be cited, and an example of the configuration thereof will be described. However, the present invention is not limited to vehicle seats mounted on ground vehicles having wheels, such as automobiles and railways, but is also applicable to seats mounted on aircraft, ships, etc. that move other than on the ground. can be applied.

Further, in the following description, the term “front-rear direction” refers to the front-rear direction of the vehicle seat, which is the direction in which the vehicle travels. Further, the "seat width direction" is the width direction of the vehicle seat, and is the direction that coincides with the left-right direction viewed from the occupant seated on the vehicle seat. Further, the "vertical direction" is the vertical direction of the vehicle seat, and is the direction that coincides with the vertical direction when the vehicle is running on a horizontal plane. The term "outside" simply refers to the direction closer to the outside in the direction from the center of the vehicle seat unit to the outside, and the term "inside" refers to the direction closer to the center from the outside to the center of the vehicle seat unit. means the direction

Unless otherwise specified, the shape, position, posture, etc. of each part of the vehicle seat described below will be described assuming that the vehicle seat is in a seated state, which will be described later.

<Vehicle seat S>
A basic configuration of a vehicle seat (hereinafter referred to as a vehicle seat S) according to this embodiment will be described with reference to FIG. FIG. 1 is a perspective view of a vehicle seat S, and a part of the vehicle seat S in FIG. 1 is shown without a cushion trim cover T and a pad P for convenience of illustration.

The vehicle seat S is a seat that is placed on the floor of the vehicle body and on which an occupant of the vehicle sits. In this embodiment, the vehicle seat S is used as a front seat corresponding to a front seat of a vehicle. However, the vehicle seat S is not limited to this, and can also be used as a rear seat. It can also be used as an eye rear seat.

The vehicle seat S, as shown in FIG. The main component is a headrest 3 that supports the head of a seated person. The seat back 1 and the seat cushion 2 are connected so as to sandwich a reclining mechanism 7 (see FIG. 2). The seat back 1 is connected to the seat cushion 2 so as to be rotatable and angle adjustable. The reclining mechanism 7 adjusts the tilt angle of the seatback 1 .

<Seat frame F>
A seat frame F is provided in the vehicle seat S as shown in FIG. It is composed of a seat cushion frame 20 to be formed.
Below, structures other than the seat back frame 10, such as the seat cushion frame 20, will be described first, and the details of the seat back frame 10 will be described thereafter.

<Seat cushion frame 20>
The seat cushion frame 20 is formed in the shape of a rectangular frame, and cushion side frames 21 are provided on the sides thereof. It also has a front connecting frame 22 that connects the cushion side frames 21 in front, and a rear connecting frame 23 that connects the cushion side frames 21 in the rear. A front connecting frame 22 and a rear connecting frame 23 in front and rear of the vehicle seat S are made of round pipes. A cushion pan frame 24 is provided in front of the front connecting frame 22 . Although not shown, a pressure receiving member is attached to bridge the cushion pan frame 24 and the rear connecting frame 23, and the seated occupant's buttocks are supported from below by the pressure receiving member.

<Headrest 3 and Headrest Frame 30>
The headrest 3 is attached to the upper part of the seat back 1 so as to support the head of the seated person. A headrest frame 30 that forms the skeleton of the headrest 3 is provided inside the headrest 3, and two headrest pillars 31 (also called headrest stays) that hang down from the lower portion of the headrest 3 are provided at both left and right ends of the headrest frame 30. is provided. The headrest 3 is attached to the seatback frame 10 by inserting the headrest pillar 31 into a headrest guide 17 attached to the upper frame 12 of the seatback frame 10 to be described later.

<Pad P and Cushion Trim Cover T>
A seat back 1 , a seat cushion 2 and a headrest 3 are configured by providing a pad P and a cushion trim cover T (cushion cover) outside the seat back frame 10 , the seat cushion frame and the headrest frame 30 . The pad P is a urethane base material formed by foam molding using, for example, a urethane foam material, and the cushion trim cover T is made of a skin material such as cloth, synthetic leather, or genuine leather.

<Slide rail 4>
A slide rail 4 is installed below the vehicle seat S as shown in FIG. The slide rails 4 allow the vehicle seat S to be attached to the vehicle body floor so as to be slidable in the longitudinal direction.

The slide rail 4 is a device for sliding the vehicle seat S along the longitudinal direction, and has a known structure (structure of a general slide rail mechanism). The slide rail 4 has a lower rail fixed on the vehicle body floor and an upper rail slidable relative to the lower rail. The upper rail is slidable with respect to the lower rail fixed to the vehicle body.

<Reclining mechanism 7>
A reclining mechanism 7 is provided between the lower end of the seat back 1 and the rear end of the seat cushion 2 . More specifically, the reclining mechanism 7 connects the seatback frame 10 of the seatback 1 and the seat cushion frame 20 of the seat cushion 2 . The reclining mechanism 7 makes it possible to adjust the angle of the seat back 1 (seat back frame 10) with respect to the seat cushion 2 (seat cushion frame 20). The reclining mechanism 7 allows the seat back 1 to be locked at a predetermined angle and maintained in an inclined state. Further, by releasing the lock, the seat back 1 can be laid down forward or backward.

The seat back frame 10 included in the vehicle seat S of this embodiment will be described below with reference to FIGS. 2 to 7. FIG.

<Seat back frame 10>
As shown in FIG. 2, the seat back frame 10 is formed in a rectangular frame shape as a whole, and includes a pair of back side frames 11 arranged on both sides, an upper frame 12, and a lower frame. 16. The upper frame 12 is arranged between the pair of back side frames 11 and connects the upper ends of the back side frames 11 . The lower frame 16 is arranged between the pair of backside frames 11 and connects the lower ends of the pair of backside frames 11 .

<Headrest guide 17>
The headrest guide 17 is a tubular member provided with an insertion opening 17a through which the headrest pillar 31 is inserted. A head portion 17b having an outer diameter larger than the diameter of an opening (upper opening 15a) of the holder portion 15 of the upper frame 12, which will be described later, is provided on the upper portion of the headrest guide 17. As shown in FIG. A portion of the headrest guide 17 below the head portion 17b may be referred to as a main body 17c of the headrest guide 17. As shown in FIG. Accordingly, even if the headrest guide 17 is inserted into the holder portion 15 of the upper frame 12 , it is prevented from falling off to the lower side of the upper frame 12 .
In addition, the headrest guide 17 is formed of a high-strength metal member in order to maintain the holding strength of the headrest 3 and suppress rattling. The headrest guide 17 is not limited to being made of metal, and may be made of resin.

<Upper frame 12>
The upper frame 12 is composed of a plate-like first pan frame 13 and a plate-like second pan frame 14 . In the upper frame 12 , the first pan frame 13 is positioned on the front side of the seat back 1 , and the second pan frame 14 is positioned on the rear side of the seat back 1 and on the rear side of the first pan frame 13 .

As shown in FIGS. 2 to 4 and 7, the first pan frame 13 sandwiches the headrest guide 17 from the front of the seat back 1 and the second pan frame 14 from the rear of the seat back 1 to support the headrest guide 17. ing.
The first pan frame 13 and the second pan frame 14 form a cylindrical holder portion 15 that holds the headrest guide 17 . The headrest guide 17 is attached by inserting the headrest guide 17 into the holder portion 15 .

As shown in FIGS. 5 and 6, each of the first pan frame 13 and the second pan frame 14 is provided with two first concave portions 13c and two second concave portions 14c extending in the vertical direction at positions facing each other. ing. The first concave portion 13c and the second concave portion 14c are formed in accordance with the outer shape of the main body 17c of the headrest guide 17. As shown in FIG. By arranging the first concave portion 13c and the second concave portion 14c to face each other and joining the first pan frame 13 and the second pan frame 14, the holder portion 15 that holds the headrest guide 17 is formed.

The holder portion 15 forms a cylindrical space with the first recess 13c and the second recess 14c, and has openings (upper opening 15a and lower opening 15b) in the upper and lower sides. In other words, the upper opening 15a of the holder portion 15 is composed of the opening 13d of the first recess 13c and the opening 14d of the second recess 14c shown in FIG. The headrest guide 17 is attached by being inserted from the upper opening 15 a of the holder portion 15 . Incidentally, as shown in FIG. 6, the diameter of the upper opening 15a is formed smaller than the diameter of the head portion 17b of the headrest guide 17. As shown in FIG. When the headrest guide 17 is inserted, the head 17b abuts against the periphery of the upper opening 15a of the holder portion 15, thereby preventing the head 17b from falling downward from the upper opening 15a.

Moreover, as shown in FIG. 5, the holder part 15 has a cover part 15c that covers the lower end of the headrest pillar 31 held by the headrest guide 17 at its lower end. The cover portion 15c is provided so as to cover the lower ends 31a of the pair of headrest pillars 31, respectively. The cover portion 15c is configured by the lower end portion of the first recessed portion 13c and the lower end portion of the second recessed portion 14c.

As shown in FIG. 5, the lower end of the holder portion 15, more specifically, the lower end of the cover portion 15c is formed to be positioned below the position of the lower end 31a of the headrest pillar 31 held by the headrest guide 17. As shown in FIG. .

Since the lower end 31a of the headrest pillar 31 is covered with the cover portion 15c, the lower end 31a of the headrest pillar 31 does not directly hit the back of the seated person. Therefore, it is not necessary to process the lower end 31a of the headrest pillar 31 into a hemispherical shape, and the cost and labor associated with such processing can be eliminated.

As shown in FIGS. 5 and 6, the first pan frame 13 is formed with a first bulging portion 13a that bulges forward of the vehicle seat S. As shown in FIGS. Further, the first bulging portion 13a is formed along the longitudinal direction of the first pan frame 13 so as to extend in the width direction of the vehicle seat S. As shown in FIG. A first brim portion 13b extending upward or downward is formed at an end portion in the vertical direction of the first bulging portion 13a. As shown in FIG. 6, the first flange portion 13b is joined to a second flange portion 14b of the second pan frame 14, which will be described later. The first pan frame 13 is formed to have a hat-shaped longitudinal section by a first bulging portion 13a and a vertically extending first brim portion 13b. Having the hat-shaped longitudinal section improves the rigidity of the first pan frame 13 .
Note that the hat shape also includes a cap shape. In other words, the hat shape also includes the case where the first brim portion 13b extending from either the upper end or the lower end of the first bulging portion 13a is formed.

As shown in FIGS. 5 and 6, the second pan frame 14 is formed with a second bulging portion 14a that bulges rearward of the vehicle seat S. As shown in FIGS. The second bulging portion 14a is formed along the longitudinal direction of the second pan frame 14 so as to extend in the width direction of the vehicle seat S. As shown in FIG. As shown in FIG. 6, the second flange portion 14b is joined to the first flange portion 13b of the first pan frame 13. As shown in FIG. Further, the second pan frame 14 is formed to have a hat-shaped longitudinal section by the second bulging portion 14a and the vertically extending second brim portion 14b. In addition, the second collar portion 14b may be formed so as to extend from either one of the upper end and the lower end of the second bulging portion 14a.
Further, as shown in FIG. 4, a window portion 14f is formed in the center of the second bulging portion 14a. By forming the window portion 14f, the state of the headrest guide 17 can be visually confirmed, and the weight can be reduced.

Thus, in this embodiment, both the first pan frame 13 and the second pan frame 14 have a hat-shaped vertical cross section, and a closed cross-sectional structure having a hollow portion is formed by joining the flanges of both. (also called monaka structure) is formed.

In this embodiment, the first pan frame 13 is made of iron and formed by pressing a steel plate. Also, the second pan frame 14 is made of resin. By making the second pan frame 14 made of resin, the weight of the upper frame 12 can be reduced. In this way, by forming the first pan frame 13 and the second pan frame 14 from mutually different materials, the upper frame 12 can be formed by taking advantage of their respective characteristics.

For example, the first pan frame 13 may be made of high-strength steel. Since high-strength steel is thin but strong, it can be made thinner than a steel plate, making it possible to reduce weight while maintaining rigidity. The second pan frame 14 may be made of high-strength steel.

Also, the second pan frame 14 may be made of aluminum or an aluminum alloy. An inexpensive or lightweight frame can be formed as compared with the case of iron.

The first pan frame 13 and the second pan frame 14 are joined with an adhesive. The adhesive is, for example, a structural adhesive, preferably of the high tenacity or high viscosity type. In the case of a high toughness type structural adhesive, cracking of the adhesive due to twisting of the frame or the like is suitably suppressed, and the durability of adhesion can be improved. If it is a high viscosity type, dripping during adhesion can be suppressed. Structural adhesives include, for example, those containing epoxy resin as a main component. First flange portion 13b of first pan frame 13 and second flange portion 14b of second pan frame 14 are bonded together. Bonding is performed using the flange portion that spreads in a plane, so that bonding strength can be maintained even when bonding with an adhesive.
By forming the first pan frame 13 and the second pan frame 14 in this way, it is possible to easily assemble the upper frame 12 while maintaining the rigidity of the upper frame 12 .
If both the first pan frame 13 and the second pan frame 14 are made of metal, they may be joined by welding.

Another example of the upper frame 12 will be described. Upper frames 12A and 12B shown in FIGS. 7B and 7C are also members attached to the upper portion of the seatback frame 10. As shown in FIGS. In the upper frame 12 shown in FIG. 7A, both the first pan frame 13 and the second pan frame 14 are provided with recesses (first recess 13c, second recess 14c). As shown in FIG. 7B, the recess (first recess 13Ac) may be formed only in the first pan frame 13A. In this case, the second pan frame 14A serves as a lid that closes the recess. Alternatively, as shown in FIG. 7C, a recess (second recess 14Bc) may be formed only in the second pan frame 14B, and the first pan frame 13B serves as a lid for closing the second recess 14c.

The vehicle seat S of this embodiment has been described above with reference to the drawings. In the present embodiment, both the first pan frame 13 and the second pan frame 14 are provided with the protruding portions (the first protruding portion 13a and the second protruding portion 14a). It may be formed only on one side. Further, in the present embodiment, the flanges (the first flange 13b and the second flange 14b) extend from both the upper end and the lower end of the bulging portion. It may be formed so as to extend only to one of the portions.

In addition, in the present embodiment, the recesses of both the first pan frame 13 and the second pan frame 14 form the cover portion 15c. This is an example, and for example, only the first concave portion 13c of the first pan frame 13 may extend downward to form a cover portion that covers only the front side of the headrest pillar 31. FIG.

S Vehicle seat (vehicle seat)
F seat frame T cushion trim cover P pad 1 seat back 2 seat cushion 3 headrest 4 slide rail 7 reclining mechanism 10 seat back frame 11 back side frame 12 upper frame 13 first pan frame 13a first bulging portion 13b first flange 13c first recess 13d upper opening 13e lower opening 14 second pan frame 14a second swelling 14b second flange 14c second recess 14d upper opening 14e lower opening 14f window 15 holder 15a upper Opening 15b Lower opening 15c Cover 16 Lower frame 17 Headrest guide 17a Insertion opening 17b Head 17c Main body 20 Seat cushion frame 21 Cushion side frame 22 Front connection frame 23 Rear connection frame 24 Cushion pan frame 30 Headrest frame 31 Headrest pillar

Claims (10)

A vehicle seat comprising a seat back, a headrest provided on the seat back, and a seat back frame forming a skeleton of the seat back,
The seat back frame is
a pair of back side frames, an upper frame connecting the pair of back side frames, and a headrest guide holding a pillar of the headrest,
The upper frame is
Having a holder portion that holds the headrest guide,
A vehicle seat, wherein the holder portion has a cover portion covering a lower end portion of the pillar held by the headrest guide at a lower end of the holder portion. 2. The vehicle seat according to claim 1, wherein a lower end of said cover portion is positioned below a lower end portion of said pillar held by said headrest guide. The upper frame has a plate-like first pan frame and a plate-like second pan frame,
As the holder portion, at least one of the first pan frame and the second pan frame is formed with a first concave portion extending in the vertical direction according to the outer shape of the headrest guide,
The holder part inserts the headrest guide into the first recess, and the first pan frame sandwiches the headrest guide from the front of the seat back and the second pan frame sandwiches the headrest guide from the rear of the seat back. 3. The vehicle seat according to claim 1, wherein the headrest guide is held by: In the upper frame, the other of the first pan frame and the second pan frame is formed with a second concave portion extending in the vertical direction in accordance with the outer shape of the headrest guide at a position facing the first concave portion. and
4. The vehicle seat according to claim 3, wherein the holder portion holds the headrest guide by inserting the headrest guide into the first recess and the second recess. The first pan frame has a first bulging portion that bulges forward of the vehicle seat and extends in a width direction of the vehicle seat, and an upper end portion of the first bulging portion and/or a first brim extending from the lower end,
5. The vehicle seat according to claim 3, wherein the first pan frame has a hat-shaped longitudinal section formed by the first bulging portion and the first brim portion. The second pan frame has a second bulging portion that bulges rearward of the vehicle seat and extends in the width direction of the vehicle seat, and an upper end portion of the second bulging portion and/or a second collar extending from the lower end,
The vehicle seat according to any one of claims 3 to 5, wherein the second pan frame has a hat-shaped longitudinal section formed by the second bulging portion and the second flange portion. . The vehicle seat according to any one of claims 3 to 6, wherein the first pan frame and the second pan frame are made of different materials. 8. The vehicle seat of claim 7, wherein said first pan frame and said second pan frame are joined by a structural adhesive. 9. A vehicle seat according to claim 7 or 8, wherein said first pan frame is made of high-strength steel. The vehicle seat according to any one of claims 7 to 9, wherein the second pan frame is made of resin or aluminum.

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