JP2019137204A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which can facilitate attachment work of a seat to a body and securely fix a seat back and a headrest to the body.SOLUTION: A vehicle seat includes: a seat frame F in which a headrest S3 is integrally formed with a seat back S2 and which forms internal frames of the seat back S2 and the headrest S3; a first fixing part 30 for fixing a portion (a seat back frame F2) of the seat frame F which corresponds to the seat back S2 to the body of a vehicle; and a second fixing part 40 for fixing a portion (a headrest frame F3) of the seat frame F which corresponds to the headrest S3 to the body.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat in which a headrest is integrally formed with a seat back.

  Conventionally, there has been known one in which a bracket extending upward is attached to the upper part of the rear surface of the headrest and hook bodies are attached to the left and right of the lower part of the rear surface (see Patent Document 1). In this technique, the headrest is attached to the back panel by locking the left and right hook bodies to the left and right locking holes formed in the back panel and fixing the bracket to the back panel with bolts.

JP 2016-120552 A

  By the way, when fixing the headrest and seat back to the back panel (vehicle body), if the conventional technology is adopted, it is necessary to attach the headrest and seat back separately, which increases the man-hours for mounting the seat on the body. Can be complicated. On the other hand, it is desired that both the seat back and the headrest can be firmly fixed to the body.

Therefore, an object of the present invention is to provide a vehicle seat that can simplify the work of attaching the seat to the body and can firmly fix both the seat back and the headrest to the body.
Moreover, it aims at improving the attachment rigidity of a headrest.
It is another object of the present invention to improve the degree of freedom of seat frame design.
Another object is to reduce the weight of the seat.
Another object is to fix the seat frame to the body in a stable state.
Another object of the present invention is to reduce the number of parts of the seat frame and simplify the assembly work of the seat.
Moreover, it aims at making the shape of a pad and a body into a simple structure.

  In order to achieve the above object, a vehicle seat of the present invention is a vehicle seat in which a headrest is configured integrally with a seatback, and a seat frame that constitutes an inner frame of the seatback and the headrest; A first fixing portion for fixing a portion of the seat frame corresponding to the seat back to a vehicle body; a second fixing portion for fixing a portion of the seat frame corresponding to the headrest to the body; It is provided with.

  According to such a configuration, by fixing the first fixing portion and the second fixing portion to the body, both the seat back and the headrest can be attached to the body, and the attachment work of the seat to the body is simplified. be able to. In addition, the portion corresponding to the seat back of the seat frame is fixed to the body by fixing the first fixing portion to the body, and the portion corresponding to the headrest of the seat frame is fixed to the body by fixing the second fixing portion to the body. Since it is fixed, each of the seat back and the headrest can be fixed to the body, and both the seat back and the headrest can be firmly fixed to the body.

  In the vehicle seat described above, the seat frame includes a first frame that forms at least a part of the seat back and an inner frame of the headrest, and the first fixing portion and the second fixing portion are both It can be set as the structure provided in the 1st frame.

  According to this, since the first frame can be firmly fixed to the body by the first fixing portion and the second fixing portion, it is possible to improve the mounting rigidity of the headrest in which the inner frame is constituted by the first frame. .

  In the vehicle seat described above, the seat frame includes a second frame that constitutes an internal frame of the seat back together with the first frame, and the second frame is fixed to the first frame. be able to.

  According to this, since a material, a shape, a material, etc. can be selected freely about each of the 1st frame and the 2nd frame, the freedom degree of design of a seat frame can be raised.

  In the vehicle seat described above, the first frame and the second frame may be made of linear members, and the second frame may have a smaller diameter than the first frame.

  According to this, since the second frame can be thinned and reduced in weight, the seat frame can be reduced in weight, and the seat including the seat frame can be reduced in weight.

  In the vehicle seat described above, the portion of the first fixing portion that is fixed to the body may be configured to be exposed to extend outside the outline of the seat back as viewed from the front side.

  According to this, the work of attaching the seat (seat back) to the body can be simplified.

  In the above-described vehicle seat, the portion of the second fixing portion fixed to the body may be configured to be exposed to extend outside the outline of the headrest when viewed from the front side.

  According to this, the work of attaching the seat (headrest) to the body can be simplified.

  The vehicle seat includes a third fixing portion for fixing a lower end portion of a portion corresponding to the seat back of the seat frame to the body, and the second fixing portion and the third fixing portion are It can be set as the structure arrange | positioned in the center of the left-right direction of a seat frame.

  According to this, since the upper and lower portions of the center in the left-right direction of the seat frame can be fixed to the body by the second fixing portion and the third fixing portion, both the seat back and the headrest can be firmly fixed to the body.

  In the vehicle seat described above, the third fixing portion can be engaged with an engagement portion provided on the body from the top to the bottom, and at least the width in the left-right direction of the lower end portion becomes smaller as it goes downward. It can be set as the structure which has become.

  According to this, since it becomes easy to engage the third fixing portion with the engaging portion of the body, the work of attaching the seat to the body can be simplified.

  In the vehicle seat described above, the two first fixing portions are provided to be separated from each other in the left-right direction, and each of the first fixing portions is disposed between the second fixing portion and the third fixing portion in the vertical direction. Each of the part and the third fixing part may be configured to be disposed between the two first fixing parts in the left-right direction.

  According to this, the seat frame can be fixed to the body in a stable state.

  In the vehicle seat described above, the seat frame includes a first frame constituting an upper frame of the seat back and an inner frame of the headrest, and a second frame constituting an inner frame of the seat back together with the first frame. The second frame may include a third frame that extends vertically at the center in the left-right direction, and the third fixing portion may be formed integrally with the third frame.

  According to this, the number of parts of the seat frame can be reduced, and the assembly work of the seat can be simplified.

  In the vehicle seat described above, the third fixing portion may protrude rearward from the back surface of the seat back, bend, and extend downward.

  According to this, the shape of the pad that covers the seat frame and the shape of the portion to which the third fixing portion of the body is attached can be simplified.

  In the vehicle seat described above, the first fixing portion and the second fixing portion are brackets fixed to the seat frame, and the two first fixing portions are provided apart from each other on the left and right sides. When viewed from the front side, the boundary part of the seat back of the seat frame and the two fixed parts of the two first fixing parts, and the fixed part of the seat frame and the second fixing part It can be set as the structure located inside the triangle which connected.

  According to this, since the first fixing part and the second fixing part can be arranged around the headrest, the mounting rigidity of the headrest can be improved when the first fixing part and the second fixing part are fixed to the body.

  According to the present invention, it is possible to simplify the work of attaching the seat to the body, and it is possible to firmly fix both the seat back and the headrest to the body.

  Moreover, the mounting rigidity of the headrest can be improved by providing both the first fixing portion and the second fixing portion in the first frame constituting the seat frame.

  Further, since the seat frame includes the first frame and the second frame fixed to the first frame, the degree of freedom in designing the seat frame can be improved.

  Further, the seat can be reduced in weight by making the diameter of the second frame smaller than that of the first frame.

  Further, by exposing the portion of the first fixed portion that is fixed to the body, the work of attaching the seat (seat back) to the body can be simplified.

  Further, by exposing the portion of the second fixing portion that is fixed to the body, the work of attaching the seat (headrest) to the body can be simplified.

  Further, by disposing the second fixing portion and the third fixing portion at the center in the left-right direction of the seat frame, both the seat back and the headrest can be firmly fixed to the body.

  Further, by reducing the width in the left-right direction of at least the lower end of the third fixed portion that can be engaged with the engaging portion of the body as it goes downward, it is possible to simplify the work of attaching the seat to the body. it can.

  Also, the two first fixing parts are arranged between the second fixing part and the third fixing part in the vertical direction, and the second fixing part and the third fixing part are arranged between the two first fixing parts in the left-right direction. By doing so, the seat frame can be fixed to the body in a stable state.

  In addition, by forming the third fixing portion integrally with the third frame, it is possible to reduce the number of parts of the seat frame and to simplify the seat assembling work.

  In addition, the configuration of the pad and the body can be simplified by projecting the third fixing portion rearward from the back surface of the seat back, bending and extending downward.

  In addition, the entire boundary portion of the headrest with the seat back is positioned inside the triangle connecting the two fixed portions of the first fixed portion and the fixed portion of the second fixed portion, Mounting rigidity can be improved.

It is a perspective view of the vehicle seat which concerns on embodiment. It is a perspective view of a seat frame. It is the figure which looked at the seat back and the headrest from the front side. It is the figure (a) which looked at the 3rd fixing | fixed part from the front side, and the figure (b) seen from the side. It is a perspective view of the 1st fixed part. It is a perspective view of the 2nd fixed part. It is the perspective view which looked at the pad from back. It is the figure which looked at the seat back, the headrest, and the back panel from the side.

Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. In this specification, front and rear, left and right, and top and bottom are based on a person sitting on a seat (sitting person).
As shown in FIG. 1, the vehicle seat of the present embodiment is configured as a vehicle seat S used as an automobile as an example of a vehicle, specifically, as a driver seat or a passenger seat of a light truck. The vehicle seat S includes a seat cushion S1, a seat back S2, and a headrest S3, and the headrest S3 is integrally formed with the seat back S2. Specifically, the seat back S2 and the headrest S3 are provided with a seat frame F as shown in FIG. 2 constituting the inner frame, and the seat frame F is composed of a pad 60 made of urethane foam and a skin made of fabric or leather. It is configured by covering with a material 70. Behind the vehicle seat S, a back panel 80 constituting a rear wall of the body of the light truck is disposed. The vehicle seat S has left and right sides for fixing the seat frame F to the back panel 80. The first fixing unit 30, the second fixing unit 40, and the third fixing unit 50 are provided.

As shown in FIG. 2, the seat frame F includes a pipe frame 10 as a first frame and a wire frame 20 as a second frame.
The pipe frame 10 is a frame made of a linear member, specifically, a metal pipe. The pipe frame 10 includes a head upper frame 11, left and right head side frames 12, a connection frame 13, and a shoulder frame 14. The head upper frame 11 extends to the left and right, and the head side frame 12 extends from the left and right ends of the head upper frame 11 substantially downward. The connection frame 13 extends from the lower end of the head side frame 12 obliquely downward in the left-right direction, and the shoulder frame 14 extends downward from the left-right outer end of the connection frame 13.

  As shown in FIG. 3, in the present embodiment, the seat frame F includes a headrest frame F3 in which the head upper frame 11 and the left and right head side frames 12 of the pipe frame 10 are portions corresponding to the headrest S3 of the seat frame F. Is configured. The seat frame F constitutes a seat back frame F2 in which the connection frame 13 and the shoulder frame 14 of the pipe frame 10 and the wire frame 20 correspond to the seat back S2 of the seat frame F. In other words, the pipe frame 10 constitutes an upper frame of the seat back S2 and an inner frame of the headrest S3, and the wire frame 20 constitutes an inner frame of the seat back S2 together with the pipe frame 10.

  The wire frame 20 is a frame made of a linear member, specifically, a metal wire. The wire constituting the wire frame 20 has a smaller diameter than the pipe constituting the pipe frame 10. That is, the wire frame 20 is formed from a linear member that is thinner than the pipe frame 10. The wire frame 20 includes a first wire frame 21, a second wire frame 22, a third wire frame 23, and a fourth wire frame 24 as a third frame.

  The first wire frame 21 includes a first back upper frame 211, left and right back side frames 212, a first back lower frame 213, and a folded frame 214. The first back upper frame 211 extends to the left and right, and the back side frame 212 extends substantially downward from the left and right ends of the first back upper frame 211. The first back lower frame 213 extends inward in the left-right direction from the lower end of the back side frame 212, and the folded frame 214 extends upward from the end in the left-right direction of the first back lower frame 213. . The back side frame 212 has an outer portion 212A, a connecting portion 212B, and an inner portion 212C. The outer portion 212A extends substantially downward from the left and right ends of the first back upper frame 211. Further, the connecting portion 212B extends inward in the left-right direction from the lower end of the outer portion 212A. Further, the inner portion 212C extends long downward from the inner end in the left-right direction of the connecting portion 212B. With such a configuration, in the first wire frame 21, the left and right outer portions 212A have a larger interval than the left and right inner portions 212C, and the left and right upper end portions disposed substantially behind the seated person's shoulders. The width in the direction is larger than the portion below the upper end.

  The second wire frame 22 is a substantially U-shaped frame disposed on the upper part of the seat back frame F2. The second wire frame 22 includes a second back upper frame 221 that extends long in the left and right directions, and left and right first end portions 222 that extend downward from the left and right ends of the second back upper frame 221. The second wire frame 22 is fixed to the first wire frame 21. Specifically, the lower end portions of the left and right first end portions 222 are fixed to the front surface of the connection portion 212B of the back side frame 212 by welding. The second back upper frame 221 and the first back upper frame 211 are spaced apart from each other so that the second back upper frame 221 is positioned below the first back upper frame 211.

  The third wire frame 23 is a substantially U-shaped frame disposed under the seat back frame F2. The third wire frame 23 includes a second back lower frame 231 that extends long in the left and right directions, and left and right second end portions 232 that extend downward from the left and right ends of the second back lower frame 231. The third wire frame 23 is fixed to the first wire frame 21. Specifically, the second back lower frame 231 is fixed to the front surface of the lower end portion of the back side frame 212 (inner portion 212C) and the upper end portion of the folded frame 214 by welding. The second back lower frame 231 and the left and right first back lower frames 213 are spaced apart from each other so that the second back lower frame 231 is positioned above the first back lower frame 213.

  The fourth wire frame 24 is a frame provided so as to extend vertically at the center in the left-right direction of the seat back frame F2. The fourth wire frame 24 is disposed between the left and right backside frames 212 in the left-right direction. The fourth wire frame 24 includes a third fixing portion 50 having a substantially U shape when viewed from the front side, and left and right center frames 241 extending long upward from the left and right ends of the third fixing portion 50. Yes. The fourth wire frame 24 is fixed to the second wire frame 22 and the third wire frame 23. Specifically, the upper ends of the left and right center frames 241 are fixed to the front surface of the second back upper frame 221 by welding, and the lower ends of the left and right center frames 241 are fixed to the front surface of the second back lower frame 231 by welding. .

  The third fixing portion 50 is a portion for fixing the lower end portion of the seat back frame F <b> 2 to the back panel 80, and is formed integrally with the fourth wire frame 24 as a part of the fourth wire frame 24. As shown in FIGS. 4A and 4B, the third fixing portion 50 includes a left and right first extending portion 51 extending rearward from the lower end of the center frame 241 and a rear portion of the first extending portion 51. The left and right second extending portions 52 extending substantially downward from the ends and the third extending portions 53 that connect the lower ends of the left and right second extending portions 52 are provided. The left and right second extending portions 52 extend obliquely downward so that the lower end portions 52A are located on the inner side in the left-right direction as they go downward. Thereby, the 3rd fixing | fixed part 50 becomes small gradually as the width | variety of the left-right direction of the lower end part 52A goes below. As shown in FIG. 4B, in the third fixing portion 50, the first extending portion 51 protrudes from the back surface S21 of the seat back S2 to the rear of the seat back S2, and the second extending portion 52 is bent downward. Extending substantially downward. Therefore, the third fixing portion 50 includes a seatback S2 in which the rear end portion of the first extending portion 51, the second extending portion 52, and the third extending portion 53 that connects the lower ends of the second extending portion 52 are seat back S2. It is arranged in a state of projecting outward on the rear side. The back panel 80 is provided with an engaging portion 81 that opens up and down, and the third fixing portion 50 is configured to be engageable with the engaging portion 81 from the top to the bottom.

  As shown in FIG. 2, the first fixing portion 30 is a portion for fixing the seat back frame F2 to the back panel 80 (see FIG. 1), and two first fixing portions 30 are provided apart from each other on the left and right. The 1st fixing | fixed part 30 is a bracket fixed to the seat frame F, and consists of a metal plate long up and down. As shown in FIG. 5, the first fixing part 30 includes a first body fixing part 31, a first frame fixing part 32, and a first connection part 33. The 1st body fixing | fixed part 31 is a part fixed to the back panel 80, and has the 1st through-hole 31A penetrated to the front and back. Further, the first frame fixing part 32 is a part fixed to the seat back frame F <b> 2 and is disposed below the first body fixing part 31. The first body fixing part 31 and the first frame fixing part 32 are arranged at different positions in the front-rear direction so that the first body fixing part 31 is on the rear side and the first frame fixing part 32 is on the front side. The first connection portion 33 is a portion that connects the first body fixing portion 31 and the first frame fixing portion 32, extends from the lower end of the first body fixing portion 31 toward the lower front side, and the lower end thereof is the first frame. It is connected to the upper end of the fixed part 32.

  The first fixing portion 30 is fixed by welding to the rear surface of the shoulder frame 14 of the pipe frame 10 in which the first frame fixing portion 32 forms the seat back frame F2 (see the first welding portion W1). The left and right ends of the first back upper frame 211 of the first wire frame 21 and the second back upper frame 221 of the second wire frame 22 constituting the wire frame 20 are respectively provided on the rear surface of the first fixing portion 30. It is fixed by welding. Thereby, the wire frame 20 is fixed to the pipe frame 10 via the first fixing portion 30. In other words, the first fixing portion 30 is disposed in a state of being sandwiched between the shoulder portion frame 14 of the pipe frame 10 and the first back upper frame 211 and the second back upper frame 221 of the wire frame 20. Furthermore, as shown in FIG. 3, the first fixing portion 30 is disposed in a portion where the pipe frame 10 and the wire frame 20 overlap when viewed from the front side. In addition, since the first back upper frame 211 and the second back upper frame 221 are spaced apart from each other in the vertical direction, the first fixing portion 30 is spanned between the first wire frame 21 and the second wire frame 22. It is arranged in the state.

  The first body fixing portion 31 of the first fixing portion 30 extends outward from the contour of the seat back S2 (see the two-dot chain line) when viewed from the front side. Specifically, the first body fixing portion 31 extends to the upper side beyond the upper edge of the shoulder portion of the seat back S2. Thereby, the 1st body fixing | fixed part 31 is exposed above the shoulder part of seat back S2 seeing from the front side.

  As shown in FIG. 6, the 2nd fixing | fixed part 40 is a part for fixing the headrest frame F3 to the back panel 80 (refer FIG. 1). Similar to the first fixing portion 30, the second fixing portion 40 is a bracket fixed to the seat frame F, and is made of a long metal plate. The second fixing part 40 includes a second body fixing part 41, a second frame fixing part 42, and a second connection part 43. The 2nd body fixing | fixed part 41 is a part fixed to the back panel 80, and has the 2nd through-hole 41A penetrated to the front and back. The second frame fixing portion 42 is a portion that is fixed to the headrest frame F3 and is disposed below the second body fixing portion 41. The second body fixing part 41 and the second frame fixing part 42 are arranged at different positions in the front-rear direction so that the second body fixing part 41 is on the rear side and the second frame fixing part 42 is on the front side. The second connection portion 43 is a portion that connects the second body fixing portion 41 and the second frame fixing portion 42, extends from the lower end of the second body fixing portion 41 toward the lower front side, and the lower end thereof is the second frame. It is connected to the upper end of the fixed part 42.

  The second fixing portion 40 is fixed by welding to the rear surface of the head upper frame 11 of the pipe frame 10 in which the second frame fixing portion 42 constitutes the headrest frame F3 (see the second welding portion W2). As shown in FIG. 3, in the present embodiment, the second frame fixing portion 42 of the second fixing portion 40 is fixed to the head upper frame 11 of the pipe frame 10, and the first frame fixing portion 32 of the first fixing portion 30 is fixed. The first fixing part 30 and the second fixing part 40 are both provided in the pipe frame 10 by being fixed to the shoulder frame 14 of the pipe frame 10.

  The 2nd body fixing | fixed part 41 of the 2nd fixing | fixed part 40 is extended to the outer side rather than the outline (refer to a dashed-two dotted line) of headrest S3 seeing from the front side. Specifically, the second body fixing portion 41 extends to the upper side beyond the upper edge of the headrest S3. Thereby, the 2nd body fixing | fixed part 41 is exposed above headrest S3 seeing from the front side.

  The two left and right first fixing portions 30 are spaced apart from each other at the approximate center in the vertical direction of the seat frame F. Specifically, the 1st fixing | fixed part 30 is arrange | positioned at the left and right shoulder part of seat back S2. On the other hand, the second fixing portion 40 and the third fixing portion 50 are arranged apart from each other in the center in the left-right direction of the seat frame F. Specifically, the second fixing portion 40 is disposed at the center in the left-right direction at the upper end portion of the headrest frame F3, and the third fixing portion 50 is disposed at the center in the left-right direction at the lower end portion of the seat back frame F2. Thereby, the two right and left first fixing portions 30 are respectively disposed between the second fixing portion 40 and the third fixing portion 50 in the vertical direction. Further, each of the second fixing portion 40 and the third fixing portion 50 is disposed between the two left and right first fixing portions 30 in the left-right direction.

  Further, the boundary portion S31 of the headrest S3 with the seat back S2, as viewed from the front side, is entirely composed of two first welded portions W1 on the left and right sides, and a second welded portion W2 on the upper left and right in the middle. It is located inside the triangle indicated by the alternate long and short dash line connecting the two. That is, the two first welded portions W1 and the second welded portions W2, more specifically, the two first fixed portions 30 and the second fixed portions 40 are arranged around the boundary portion S31. The first welded portion W1 is a fixed portion of the seatback frame F2 of the seat frame F and the two first fixed portions 30, and the second welded portion W2 is the headrest frame F3 and the second fixed portion 40 of the seat frame F. It is a fixed part.

  The pad 60 that covers the seat frame F integrally includes a seat back pad 62 that covers the seat back frame F2 and a headrest pad 63 that covers the headrest frame F3. As shown in FIG. 7, the seat back pad 62 has a plurality of concave portions 64, first convex portions 65, and second convex portions 66 on the back surface thereof.

  The recessed part 64 is a recessed part recessed toward the front side, and has a substantially rectangular shape. The recess 64 includes a first recess 64A, a second recess 64B, and a third recess 64C. A plurality of first recesses 64 </ b> A, specifically three, are provided side by side in the left-right direction at the upper end of the back surface of the seat back pad 62. Also, a plurality of, specifically two, third recesses 64 </ b> C are provided in the left-right direction at the lower end portion of the back surface of the seat back pad 62. Furthermore, as shown in FIG. 3, the third recesses 64 </ b> C are provided on the fourth wire frame 24, specifically on the left and right sides of the third fixing portion 50. In addition, a plurality of, specifically, three second recesses 64B are provided in the vertical direction at the left and right ends of the back surface of the seat back pad 62. The second recess 64B is disposed between the first recess 64A and the third recess 64C in the vertical direction, and the first recess 64A and the third recess 64C are disposed between the left and right second recesses 64B in the left-right direction. Yes.

  The pad 60 is formed integrally with the seat frame F so as to cover the seat frame F by insert molding. Although illustration is omitted, the molding die is provided with a plurality of convex frame holding portions for holding the seat frame F at a predetermined position in the die, and the concave portion 64 corresponds to the frame holding portion. It is the recessed part formed. As for the wire frame 20, the surface currently hold | maintained at the frame holding | maintenance part is partially exposed by the bottom face of recessed part 64A-64C. Specifically, in the wire frame 20, a part of the rear surface of the first back upper frame 211 is exposed at the bottom surface of the first recess 64A, and a part of the rear surface of the inner portion 212C of the back side frame 212 is the second recess 64B. A part of the rear surface of the first back lower frame 213 is exposed at the bottom surface of the third recess 64C. In other words, when viewed from the front-rear direction, the first recessed portion 64A is disposed so as to overlap the first back upper frame 211, the second recessed portion 64B is disposed so as to overlap the inner portion 212C, and the third recessed portion 64C includes the first recessed portion 64C. It is arranged so as to overlap with the back lower frame 213.

  Returning to FIG. 7, the 1st convex part 65 and the 2nd convex part 66 are convex parts which protrude toward the back side. The 1st convex part 65 is arrange | positioned at the upper part of the back surface of the seat back pad 62, and is formed in the substantially rectangular shape. Specifically, the first convex portion 65 is disposed between the first concave portion 64A and the second concave portion 64B disposed in the middle in the vertical direction in the vertical direction. The first convex portion 65 is provided so as to straddle the upper left and right two second concave portions 64B. Similarly, the 1st convex part 65 is provided so that two left-right 2nd recessed parts 64B arrange | positioned in the middle of an up-down direction may be straddled. The 2nd convex part 66 is spaced apart and arrange | positioned downward from the 1st convex part 65, and is formed in the substantially rectangular shape long on either side. Specifically, the second convex portion 66 is disposed approximately between the two left and right second concave portions 64B disposed on the lowermost side. Moreover, the 2nd convex part 66 is provided so that two left-right 2nd recessed parts 64B arrange | positioned at the lowest side may be straddled.

  When the seat back S2 and the headrest S3 of the vehicle seat S configured as described above are attached to the back panel 80, first, the third fixing portion 50 is provided on the back panel 80 as shown in FIG. The engagement portion 81 is inserted from above and engaged. As a result, the seat frame F is hooked on the back panel 80, so that the seat frame F can be temporarily fixed to the back panel 80. Next, by fastening the screw 92 to the back panel 80 through the first through hole 31A (see FIG. 5) provided in the first body fixing portion 31 of the first fixing portion 30, the first fixing portion 30 is Fixed to the back panel 80. Accordingly, the seat back frame F2 (seat back S2) can be fixed to the back panel 80. Further, the second fixing portion 40 is attached to the back panel 80 by fastening the screw 93 to the back panel 80 through the second through hole 41A (see FIG. 6) provided in the second body fixing portion 41 of the second fixing portion 40. Fixed to the panel 80. Thereby, the headrest frame F3 (headrest S3) can be fixed to the back panel 80. When the seat back S2 and the headrest S3 are fixed to the back panel 80, the first convex portion 65 and the second convex portion 66 provided on the back surface of the seat back pad 62 abut against the back panel 80 to support the seat back S2. To do. In addition, the order which fixes the two 1st fixing | fixed part 30 and the 2nd fixing | fixed part 40 to the back panel 80 is arbitrary.

  According to the present embodiment described above, both the seat back S2 and the headrest S3 can be attached to the back panel 80 by fixing the first fixing portion 30 and the second fixing portion 40 to the back panel 80. Thereby, the attachment operation | work to the back panel 80 of the vehicle seat S can be simplified compared with the case where the seat back and headrest which were provided separately are each attached to a back panel. Further, the seat back frame F2 is fixed to the back panel 80 by fixing the first fixing portion 30 to the back panel 80, and the headrest frame F3 is fixed to the back panel 80 by fixing the second fixing portion 40 to the back panel 80. Since it is fixed, each of the seat back S2 and the headrest S3 can be fixed to the back panel 80. Thereby, for example, in a configuration in which the seat back and the headrest are integrated, both the seat back S2 and the headrest S3 can be firmly fixed to the back panel 80 as compared with the case where only the seat back is fixed to the back panel. .

  Further, since both the first fixing portion 30 and the second fixing portion 40 are provided in the pipe frame 10 which is thicker and higher in rigidity than the wire frame 20, the first fixing portion 30 and the second fixing portion 40 are connected to the pipe. The frame 10 can be firmly fixed to the back panel 80. Thereby, especially the mounting rigidity of the headrest S3 in which the entire inner frame is constituted by the pipe frame 10 can be improved.

  Further, since the seat frame F is configured to include the pipe frame 10 and the wire frame 20 fixed to the pipe frame 10, the material, shape, material, and the like of each of the pipe frame 10 and the wire frame 20 are set. You can choose freely. Thereby, the freedom degree of design of the seat frame F can be improved.

  Further, since the diameter of the wire frame 20 is smaller than the diameter of the pipe frame 10, for example, the wire frame 20 can be made thinner and lighter than a case where the wire frame 20 is formed from a member having the same diameter. Thereby, since the seat frame F can be reduced in weight, the vehicle seat S provided with the seat frame F can be reduced in weight. Further, in the present embodiment, the first convex portion 65 and the second convex portion 66 provided on the back surface of the seat back pad 62 are in contact with the back panel 80, and the load input from the front side to the seat back S2 is Since it can be received not only by the wire frame 20 but also by the back panel 80, even if the wire frame 20 is thinner than the pipe frame 10, the load can be firmly supported.

  Further, since the first body fixing portion 31 of the first fixing portion 30 is exposed when viewed from the front side, the screw 92 can be easily fastened to the back panel 80 from the front side through the first through hole 31A. The operation of attaching the seat S (seat back S2) to the back panel 80 can be simplified.

  Further, since the second body fixing portion 41 of the second fixing portion 40 is exposed when viewed from the front side, the screw 93 can be easily fastened to the back panel 80 from the front side through the second through hole 41A. The attachment work of the sheet S (headrest S3) to the back panel 80 can be simplified.

  Further, since the second fixing portion 40 provided at the upper end portion of the seat frame F and the third fixing portion 50 provided at the lower end portion of the seat frame F are disposed at the center in the left-right direction of the seat frame F, the second fixing portion 40 is provided. The upper and lower portions of the center of the seat frame F in the left-right direction can be fixed to the back panel 80 by the fixing portion 40 and the third fixing portion 50. Thereby, both the seat back S2 and the headrest S3 can be firmly fixed to the back panel 80.

  Further, since the width in the left-right direction of the lower end portion 52A of the third fixing portion 50 becomes smaller as it goes downward, the third fixing portion 50 can be easily engaged with the engaging portion 81 of the back panel 80. Thereby, the attachment operation | work to the back panel 80 of the vehicle seat S can be made easier.

  Further, each of the two first fixing portions 30 is disposed between the second fixing portion 40 and the third fixing portion 50 in the vertical direction, and each of the second fixing portion 40 and the third fixing portion 50 is 2 in the left-right direction. Since it is disposed between the first fixing portions 30, the seat frame F can be fixed to the back panel 80 in a stable state.

  In addition, since the third fixing portion 50 is integrally formed with the fourth wire frame 24, the number of parts of the seat frame F is smaller than when the third fixing portion and the fourth wire frame (wire frame) are provided separately. Can be reduced. Moreover, since the operation | work which attaches a 3rd fixing | fixed part to the seat frame F becomes unnecessary, the assembly operation | work of the vehicle seat S can be simplified.

  Further, since the third fixing portion 50 protrudes rearward from the back surface S21 of the seat back S2, and bends and extends downward, compared to the case where the third fixing portion does not protrude from the back surface of the seat back, For example, since it is not necessary to provide a recess or the like for exposing the third fixing portion to the pad, the shape of the pad 60 covering the seat frame F can be simplified. Further, the shape of the engaging portion 81 (the portion to which the third fixing portion 50 is attached) of the back panel 80 is simplified compared to the case where the third fixing portion is disposed in a recess provided on the back surface of the pad. It can be configured.

  Further, the entire boundary portion S31 is located inside the triangle connecting the two first welded portions W1 and the second welded portions W2 when viewed from the front side, so that the first fixed portion 30 and the second fixed portion 40 are located. Since the first fixing part 30 and the second fixing part 40 are fixed to the back panel 80, the mounting rigidity of the headrest S3 can be improved.

Although one embodiment of the invention has been described above, the present invention is not limited to the embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of invention as follows.
For example, the arrangement, the number, and the like of the first fixing unit 30, the second fixing unit 40, and the third fixing unit 50 described in the embodiment are examples, and are not limited to the configuration of the embodiment. For example, a plurality of second fixing parts and third fixing parts may be provided. Further, for example, when two second fixing portions are provided apart from each other in the left and right directions, the second fixing portions may not be arranged at the center in the left and right direction of the seat frame. The same applies to the third fixing portion. Further, the first fixing portion may be configured to extend to the outside in the left-right direction beyond the left and right edges of the seat back. The same applies to the second fixing portion.

  Moreover, in the said embodiment, although the 3rd fixing | fixed part 50 became small as the width | variety of the left-right direction of the lower end part 52A went downward, it is not limited to this, For example, a 3rd fixing | fixed part has the upper end part. The overall width in the left-right direction including may decrease as it goes downward. In the embodiment, the third fixing portion 50 is provided to protrude rearward from the back surface S21 of the seat back S2. However, the present invention is not limited thereto, and the third fixing portion protrudes rearward from the rear surface of the seat back. For example, you may provide inside the outline of a seat back seeing from the left-right direction. Moreover, in the said embodiment, although the 3rd fixing | fixed part 50 was integrally formed in the seat frame F (wire frame 20), it is not limited to this, For example, a 3rd fixing | fixed part is 1st of the said embodiment. A bracket fixed to the seat frame may be used similarly to the fixing portion 30 and the like.

  Moreover, in the said embodiment, although the pipe frame 10 as a 1st frame was a frame which consists of a pipe, and the wire frame 20 as a 2nd frame was a frame which consists of a wire, it is not limited to this. For example, the first frame may be a frame made of a metal plate. The second frame may be, for example, a frame made of a pipe or a frame made of a metal plate. Further, the first frame or the second frame may be a frame obtained by connecting frames made of different members. For example, a frame in which a frame made of a pipe and a frame made of a metal plate are connected, a frame in which a frame made of a pipe and a frame made of a wire are connected may be used. When both the first frame and the second frame are made of pipes, the diameters of the pipes may be the same or different.

  Moreover, in the said embodiment, although the 1st fixing | fixed part 30 and the 2nd fixing | fixed part 40 were fixed to the pipe frame 10 as a 1st flame | frame by welding, it is not limited to this, For example, a 1st fixing | fixed part and a 2nd fixing | fixed part The two fixing portions may be fixed to the first frame with bolts or caulking. Moreover, in the said embodiment, although the 1st fixing | fixed part 30 and the 2nd fixing | fixed part 40 were all provided in the pipe frame 10, ie, the same flame | frame, it is not limited to this, A 1st fixing | fixed part and 2nd The fixing part may be provided on a different frame.

  Moreover, in the said embodiment, although the pipe frame 10 as a 1st frame comprised the upper part (part) of seat back S2, and the internal frame of the headrest S3 whole, it is not limited to this. For example, the first frame may be a frame constituting an inner frame of the entire seat back and the entire headrest. In this case, the seat frame may be configured not to include the second frame.

  Moreover, in the said embodiment, although the 1st fixing | fixed part 30 and the 2nd fixing | fixed part 40 were the brackets fixed to the seat frame F, it is not limited to this, For example, a 1st fixing | fixed part and a 2nd fixing | fixed part At least one may be formed integrally with the seat frame as a part of the seat frame, similarly to the third fixing portion 50 of the embodiment. In the above embodiment, the first body fixing portion 31 of the first fixing portion 30 extends to the outside of the contour of the seat back S2 when viewed from the front side. If it is the composition which can be fastened to the 1st fixed part through a screw etc. from the side, the 1st fixed part may be provided inside the outline of the seat back seeing from the front side. The same applies to the second fixing portion.

  Moreover, in the said embodiment, although vehicle seat S mounted in a light truck was illustrated as a vehicle seat, it is not limited to this, A vehicle seat is a seat mounted in motor vehicles other than a light truck, Also good. Further, the vehicle seat may be a seat mounted on a vehicle other than an automobile, for example, a railway vehicle, a ship, an aircraft, or the like.

  Moreover, each element demonstrated by above-described embodiment and modification can be implemented in combination as appropriate.

DESCRIPTION OF SYMBOLS 10 Pipe frame 20 Wire frame 24 4th wire frame 30 1st fixing | fixed part 31 1st body fixing | fixed part 40 2nd fixing | fixed part 41 2nd body fixing | fixed part 50 3rd fixing | fixed part 52A Lower end part 80 Back panel 81 Engaging part F Sheet Frame F2 Seat back frame F3 Headrest frame S Vehicle seat S2 Seat back S21 Back S3 Headrest S31 Boundary portion W1 First weld W2 Second weld

Claims (12)

A vehicle seat in which the headrest is configured integrally with the seat back,
A seat frame constituting an inner frame of the seat back and the headrest;
A first fixing portion for fixing a portion of the seat frame corresponding to the seat back to a vehicle body;
A vehicle seat, comprising: a second fixing portion for fixing a portion of the seat frame corresponding to the headrest to the body. The seat frame includes a first frame constituting at least a part of the seat back and an inner frame of the headrest,
2. The vehicle seat according to claim 1, wherein both the first fixing portion and the second fixing portion are provided on the first frame. The seat frame has a second frame that constitutes an internal frame of the seat back together with the first frame;
The vehicle seat according to claim 2, wherein the second frame is fixed to the first frame. The first frame and the second frame are composed of linear members,
The vehicle seat according to claim 3, wherein the second frame has a diameter smaller than that of the first frame.   The portion of the first fixing portion fixed to the body extends from the front side to the outside and is exposed when viewed from the front side. The vehicle seat according to item 1.   The portion of the second fixing portion that is fixed to the body extends from the front side to the outside of the outline of the headrest and is exposed when viewed from the front side. The vehicle seat according to the item. A third fixing portion for fixing a lower end portion of a portion corresponding to the seat back of the seat frame to the body;
The vehicle seat according to any one of claims 1 to 6, wherein the second fixing portion and the third fixing portion are arranged at the center in the left-right direction of the seat frame.   The third fixing portion can be engaged with an engaging portion provided on the body from the top to the bottom, and at least the width in the left-right direction of the lower end portion becomes smaller as it goes downward. The vehicle seat according to claim 7. The first fixing portion is provided in two spaced apart from each other on the left and right, and each of the first fixing portions is disposed between the second fixing portion and the third fixing portion in the vertical direction.
The vehicle seat according to claim 7 or 8, wherein each of the second fixing portion and the third fixing portion is disposed between the two first fixing portions in the left-right direction. The seat frame includes a first frame constituting an upper frame of the seat back and an inner frame of the headrest, and a second frame constituting an inner frame of the seat back together with the first frame,
The second frame includes a third frame that extends vertically at the center in the left-right direction,
The vehicle seat according to any one of claims 7 to 9, wherein the third fixing portion is formed integrally with the third frame.   The vehicle seat according to any one of claims 7 to 10, wherein the third fixing portion protrudes rearward from the back surface of the seat back, and is bent and extends downward. . The first fixing part and the second fixing part are brackets fixed to the seat frame,
The first fixing part is provided in two spaced apart on the left and right,
The boundary between the headrest and the seat back, as viewed from the front side, is entirely composed of two fixed portions of the seat frame and the two first fixing portions, and the seat frame and the second fixing portion. The vehicle seat according to any one of claims 1 to 11, wherein the vehicle seat is located inside a triangle connecting the fixed portion.

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