JP7077041B2 - Vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat in which the headrest is integrally configured on the seat back.

Conventionally, it is known that 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.

Japanese Unexamined Patent Publication No. 2016-120752

By the way, when fixing the headrest and the seat back to the back panel (vehicle body), if the conventional technique is adopted, it is necessary to attach the headrest and the seat back separately, which increases the man-hours for attaching the seat to the body and the installation work. 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, it is an object of the present invention to provide a vehicle seat capable of simplifying the attachment work of the seat to the body and firmly fixing both the seat back and the headrest to the body.
It also aims to improve the mounting rigidity of the headrest.
It also aims to improve the degree of freedom in designing the seat frame.
The purpose is to reduce the weight of the seat.
The purpose 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 to simplify the seat assembly work.
Further, the purpose is to make the shape of the pad and the body simple.

In order to achieve the above-mentioned object, the vehicle seat of the present invention is a vehicle seat in which the headrest is integrally configured on the seat back, and the seat frame constituting the seat back and the internal frame of the headrest, and the seat frame. A first fixing portion for fixing the portion of the seat frame corresponding to the seat back to the body of the vehicle, and a second fixing portion for fixing the portion of the seat frame corresponding to the headrest to the body. It is characterized by being equipped 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. Further, by fixing the first fixing part to the body, the part corresponding to the seat back of the seat frame is fixed to the body, and by fixing the second fixing part to the body, the part corresponding to the headrest of the seat frame is fixed 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 above-mentioned vehicle seat, the seat frame includes at least a part of the seat back and a first frame constituting the inner frame of the headrest, and the first fixing portion and the second fixing portion are both said. It can be configured as provided in the first 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, the mounting rigidity of the headrest in which the internal frame is formed by the first frame can be improved. ..

In the vehicle seat described above, the seat frame has a second frame constituting the inner 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 the material, shape, material and the like can be freely selected for each of the first frame and the second frame, the degree of freedom in designing the seat frame can be improved.

In the vehicle seat described above, the first frame and the second frame are 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 made thinner and lighter, the seat frame can be made lighter, and the seat provided with the seat frame can be made lighter.

In the vehicle seat described above, the portion of the first fixing portion fixed to the body may be configured to extend outward from the contour of the seat back and be exposed when viewed from the front side.

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

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

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

The vehicle seat described above includes a third fixing portion for fixing the lower end portion of the portion of the seat frame corresponding to the seat back to the body, and the second fixing portion and the third fixing portion are described above. It can be configured to be arranged in the center of the seat frame in the left-right direction.

According to this, since the upper and lower sides of the center of the seat frame in the left-right direction 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 engage with the engaging portion provided on the body from top to bottom, and at least the width of the lower end portion in the left-right direction decreases toward the bottom. It can be configured as such.

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 made easier.

In the vehicle seat described above, two first fixing portions are provided apart from each other on the left and right, and each is arranged between the second fixing portion and the third fixing portion in the vertical direction, and the second fixing portion is provided. The portion and the third fixing portion may each be arranged between the two first fixing portions 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 that constitutes an upper portion of the seat back and an internal frame of the headrest, and a second frame that constitutes the internal frame of the seat back together with the first frame. The second frame includes a third frame extending vertically in the center in the left-right direction, and the third fixing portion can be configured to be integrally formed with the third frame.

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

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

According to this, the shape of the pad covering the seat frame and the shape of the portion to which the third fixing portion of the body is attached can be easily configured.

In the vehicle seat described above, the first fixing portion and the second fixing portion are brackets fixed to the seat frame, and the first fixing portions are provided two apart from each other to the left and right, and the headrest is provided. When viewed from the front side, the boundary portion between the seat back and the seat back is the same as the seat frame and the two fixing portions of the first fixing portion, and the fixing portion of the seat frame and the second fixing portion. It can be configured to be located inside the triangle connecting with.

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

According to the present invention, the work of attaching the seat to the body can be simplified, and both the seat back and the headrest can be firmly fixed to the body.

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

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

Further, by exposing the portion of the first fixing portion fixed to the body, the work of attaching the seat (seat back) to the body can be made easier.

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

Further, by arranging the second fixing portion and the third fixing portion in 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 of at least the lower end portion of the third fixing portion that can be engaged with the engaging portion of the body in the left-right direction toward the bottom, the work of attaching the seat to the body can be made easier. can.

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

Further, by integrally forming the third fixing portion with the third frame, the number of parts of the seat frame can be reduced and the seat assembly work can be simplified.

Further, by forming the third fixing portion so as to project rearward from the back surface of the seat back, bend and extend downward, the shape of the pad or the body can be easily configured.

In addition, the entire boundary portion of the headrest with the seat back is configured to be located inside the triangle connecting the two fixed portions of the first fixed portion and the fixed portion of the second fixed portion, so that the headrest can be used. The 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 fixed part from the front side, and the figure (b) which looked at from the side. It is a perspective view of the 1st fixing part. It is a perspective view of the 2nd fixing part. It is a perspective view which looked at the pad from the 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, the front / rear, left / right, and top / bottom are based on the person sitting on the seat (seat person).
As shown in FIG. 1, the vehicle seat of the present embodiment is configured as an automobile as an example of a vehicle, specifically, a vehicle seat S used as a driver's seat or a passenger's 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 configured with the seat back S2. Specifically, the seat back S2 and the headrest S3 include a seat frame F as shown in FIG. 2 constituting the inner frame thereof, and the seat frame F is a pad 60 made of urethane foam or the like, and a skin made of cloth or leather. It is composed of covering with a material 70. Behind the vehicle seat S, a back panel 80 constituting the rear wall of the body of the light truck is arranged, and the vehicle seat S is left and right for fixing the seat frame F to the back panel 80. A first fixing portion 30, a second fixing portion 40, and a third fixing portion 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 has 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 substantially downward from the left and right ends of the head upper frame 11. Further, the connection frame 13 extends diagonally downward from the lower end of the head side frame 12 to the outside in the left-right direction, and the shoulder frame 14 extends downward from the outer end in the left-right direction of the connection frame 13.

As shown in FIG. 3, in the present embodiment, the seat frame F is a headrest frame F3 in which mainly the head upper frame 11 of the pipe frame 10 and the left and right head side frames 12 correspond to the headrest S3 of the seat frame F. Consists of. Further, 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 the upper portion of the seat back S2 and the inner frame of the headrest S3, and the wire frame 20 constitutes the 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 of a linear member 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 has 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 long 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. Further, 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 inner end in the left-right direction of the first back lower frame 213. .. The backside 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 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 distance between the left and right outer portions 212A is larger than the distance between the left and right inner portions 212C, and the left and right upper ends arranged substantially behind the shoulders of the seated person. 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 arranged on the upper part of the seat back frame F2. The second wire frame 22 has a second back upper frame 221 extending long to the left and right, and left and right first end portions 222 extending 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 ends of the left and right first end portions 222 are fixed to the front surface of the connection portion 212B of the backside frame 212 by welding. The second back upper frame 221 and the first back upper frame 211 are vertically separated from each other so that the second back upper frame 221 is located below the first back upper frame 211.

The third wire frame 23 is a substantially U-shaped frame arranged under the seat back frame F2. The third wire frame 23 has a second back lower frame 231 extending long to the left and right, and left and right second end portions 232 extending 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 vertically separated from each other so that the second back lower frame 231 is located above the first back lower frame 213.

The fourth wire frame 24 is a frame provided so as to extend vertically at the center of the seat back frame F2 in the left-right direction. The fourth wire frame 24 is arranged between the left and right backside frames 212 in the left-right direction. The fourth wire frame 24 has a third fixing portion 50 having a substantially U-shape when viewed from the front side, and left and right center frames 241 extending upward from the left and right ends of the third fixing portion 50. There is. 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 F2 to the back panel 80, and is integrally formed 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 is rearward of the left and right first extending portions 51 extending rearward from the lower end of the center frame 241 and the first extending portion 51. It has left and right second extending portions 52 extending substantially downward from the ends, and a third extending portion 53 connecting the lower ends of the left and right second extending portions 52. The left and right second extending portions 52 extend diagonally downward so that the lower end portions 52A are located inward in the left-right direction as the lower end portions 52A each move downward. As a result, the width of the lower end portion 52A of the third fixed portion 50 in the left-right direction gradually decreases as the width thereof decreases. As shown in FIG. 4B, in the third fixed portion 50, the first extending portion 51 projects from the back surface S21 of the seat back S2 to the rear of the seat back S2, and the second extending portion 52 bends downward. It extends almost downward. Therefore, in the third fixed portion 50, the rear end portion of the first extending portion 51, the second extending portion 52, and the third extending portion 53 connecting the lower ends of the second extending portion 52 are seat backs S2. It is arranged so that it protrudes outward on the rear side. The back panel 80 is provided with an engaging portion 81 opened vertically, and the third fixing portion 50 is configured to be able to engage with the engaging portion 81 from top to 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 fixed portions 30 are provided apart from each other on the left and right sides. The first fixing portion 30 is a bracket fixed to the seat frame F, and is made of a vertically long metal plate. As shown in FIG. 5, the first fixing portion 30 has a first body fixing portion 31, a first frame fixing portion 32, and a first connecting portion 33. The first body fixing portion 31 is a portion fixed to the back panel 80, and has a first through hole 31A penetrating back and forth. Further, the first frame fixing portion 32 is a portion fixed to the seat back frame F2, and is arranged below the first body fixing portion 31. The first body fixing portion 31 and the first frame fixing portion 32 are arranged at different positions in the front-rear direction so that the first body fixing portion 31 is on the rear side and the first frame fixing portion 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 diagonally forward downward from the lower end of the first body fixing portion 31, and the lower end thereof is the first frame. It is connected to the upper end of the fixed portion 32.

In the first fixing portion 30, the first frame fixing portion 32 is fixed to the rear surface of the shoulder frame 14 of the pipe frame 10 constituting the seat back frame F2 by welding (see the first welded portion W1). Further, on the rear surface of the first fixing portion 30, 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. It is fixed by welding. As a result, 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 arranged so as to be sandwiched between the shoulder 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 arranged at a portion where the pipe frame 10 and the wire frame 20 overlap when viewed from the front side. Further, since the first back upper frame 211 and the second back upper frame 221 are arranged vertically apart from each other, the first fixing portion 30 is bridged between the first wire frame 21 and the second wire frame 22. It is arranged in a state of being.

The first body fixing portion 31 of the first fixing portion 30 extends to the outside of 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 beyond the upper edge of the shoulder portion of the seat back S2 to the upper side. As a result, the first body fixing portion 31 is exposed above the shoulder portion of the seat back S2 when viewed from the front side.

As shown in FIG. 6, the second fixing portion 40 is a portion for fixing the headrest frame F3 to the back panel 80 (see FIG. 1). Like the first fixing portion 30, the second fixing portion 40 is a bracket fixed to the seat frame F, and is made of a vertically long metal plate. The second fixing portion 40 has a second body fixing portion 41, a second frame fixing portion 42, and a second connecting portion 43. The second body fixing portion 41 is a portion fixed to the back panel 80, and has a second through hole 41A penetrating back and forth. Further, the second frame fixing portion 42 is a portion fixed to the headrest frame F3, and is arranged below the second body fixing portion 41. The second body fixing portion 41 and the second frame fixing portion 42 are arranged at different positions in the front-rear direction so that the second body fixing portion 41 is on the rear side and the second frame fixing portion 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 diagonally forward downward from the lower end of the second body fixing portion 41, and the lower end thereof is the second frame. It is connected to the upper end of the fixed portion 42.

In the second fixing portion 40, the second frame fixing portion 42 is fixed to the rear surface of the head upper frame 11 of the pipe frame 10 constituting the headrest frame F3 by welding (see the second welded 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. By being fixed to the shoulder frame 14 of the pipe frame 10, both the first fixing portion 30 and the second fixing portion 40 are provided on the pipe frame 10.

The second body fixing portion 41 of the second fixing portion 40 extends to the outside of the contour of the headrest S3 (see the two-dot chain line) when viewed from the front side. Specifically, the second body fixing portion 41 extends beyond the upper edge of the headrest S3 to the upper side. As a result, the second body fixing portion 41 is exposed above the headrest S3 when viewed from the front side.

The two left and right first fixing portions 30 are arranged apart from each other on the left and right at substantially the center of the seat frame F in the vertical direction. Specifically, the first fixing portion 30 is arranged on the left and right shoulder portions of the seat back S2. On the other hand, the second fixing portion 40 and the third fixing portion 50 are arranged vertically separated from each other in the center of the seat frame F in the left-right direction. Specifically, the second fixing portion 40 is arranged at the center in the left-right direction of the upper end portion of the headrest frame F3, and the third fixing portion 50 is arranged at the center of the lower end portion of the seat back frame F2 in the left-right direction. As a result, the two left and right first fixing portions 30 are arranged between the second fixing portion 40 and the third fixing portion 50 in the vertical direction, respectively. Further, the second fixing portion 40 and the third fixing portion 50 are respectively arranged 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 is the first welded portion W1 at two locations on the left and right and the second welded portion W2 above the left and right centers as a whole when viewed from the front side. 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 portion W2, more specifically, the two first fixed portions 30 and the second fixed portion 40 are arranged around the boundary portion S31. The first welded portion W1 is a fixed portion of the seat back 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 of the seat frame F and the second fixed portion 40. It is a fixed part of.

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

The recess 64 is a recess that is recessed toward the front side, and has a substantially square shape. The recess 64 includes a first recess 64A, a second recess 64B, and a third recess 64C. A plurality of, specifically, three first recesses 64A are provided side by side in the left-right direction at the upper end portion of the back surface of the seat back pad 62. Further, a plurality of third recesses 64C are provided side by side in the left-right direction at the lower end portion of the back surface of the seat back pad 62, specifically, two. Furthermore, as shown in FIG. 3, the third recess 64C is provided on each of the left and right sides of the fourth wire frame 24, specifically, the third fixing portion 50. Further, a plurality of second recesses 64B are provided side by side in the vertical direction at the left and right ends of the back surface of the seat back pad 62, specifically, three. The second recess 64B is arranged 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 arranged between the left and right second recesses 64B in the left-right direction. There is.

The pad 60 is integrally molded with the seat frame F in a state of covering the seat frame F by insert molding. Although not shown, the molding die is provided with a plurality of convex frame holding portions for holding the sheet frame F at a predetermined position in the mold, and the concave portions 64 correspond to the frame holding portions. It is a concave portion formed by the above. In the wire frame 20, the surface held by the frame holding portion is partially exposed on the bottom surface of the recesses 64A to 64C. Specifically, in the wire frame 20, a part of the rear surface of the first back upper frame 211 is exposed on 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 on the bottom surface of the third recess 64C. In other words, when viewed from the front-rear direction, the first recess 64A is arranged so as to overlap the first back upper frame 211, the second recess 64B is arranged so as to overlap the inner portion 212C, and the third recess 64C is arranged so as to overlap the first back upper frame 211. It is arranged so as to overlap the back lower frame 213.

Returning to FIG. 7, the first convex portion 65 and the second convex portion 66 are convex portions protruding toward the rear side. The first convex portion 65 is arranged on the upper part of the back surface of the seat back pad 62 and is formed in a substantially rectangular shape. Specifically, the first convex portion 65 is arranged substantially between the first concave portion 64A and the second concave portion 64B arranged in the middle of the vertical direction in the vertical direction. Further, the first convex portion 65 is provided so as to straddle the upper left and right two second concave portions 64B. Similarly, the first convex portion 65 is provided so as to straddle the two left and right second concave portions 64B arranged in the center in the vertical direction. The second convex portion 66 is arranged downwardly separated from the first convex portion 65, and is formed in a substantially rectangular shape long to the left and right. Specifically, the second convex portion 66 is arranged substantially between the two left and right second concave portions 64B arranged on the lowermost side. Further, the second convex portion 66 is provided so as to straddle the two left and right second concave portions 64B arranged on the lowermost side.

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, as shown in FIG. 8, the third fixing portion 50 is provided on the back panel 80. It is inserted into the engaging portion 81 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, the screw 92 is fastened 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, so that the first fixing portion 30 is formed. It is fixed to the back panel 80. Thereby, the seat back frame F2 (seat back S2) can be fixed to the back panel 80. Further, 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, the second fixing portion 40 backs up. It is 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 on the back panel 80 to support the seat back S2. do. The order in which the two first fixing portions 30 and the second fixing portions 40 are fixed to the back panel 80 is arbitrary.

According to the present embodiment described above, by fixing the first fixing portion 30 and the second fixing portion 40 to the back panel 80, both the seat back S2 and the headrest S3 can be attached to the back panel 80. This makes it possible to simplify the work of attaching the vehicle seat S to the back panel 80 as compared with the case where the separately provided seat back and headrest are attached to the 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 on the pipe frame 10 which is thicker and more rigid than the wire frame 20, the first fixing portion 30 and the second fixing portion 40 make a pipe. The frame 10 can be firmly fixed to the back panel 80. Thereby, in particular, the mounting rigidity of the headrest S3 in which the entire inner frame is formed by the pipe frame 10 can be improved.

Further, since the seat frame F includes the pipe frame 10 and the wire frame 20 fixed to the pipe frame 10, the material, shape, material, etc. of each of the pipe frame 10 and the wire frame 20 can be determined. You can choose freely. This makes it possible to improve the degree of freedom in designing the seat frame F.

Further, since the diameter of the wire frame 20 is smaller than the diameter of the pipe frame 10, the wire frame 20 can be made thinner and lighter than, for example, as compared with the case where the wire frame 20 is formed of members having the same diameter. As a result, the weight of the seat frame F can be reduced, so that the weight of the vehicle seat S provided with the seat frame F can be reduced. 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 to the seat back S2 from the front side is applied. 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, and the vehicle can be used. The work of attaching the seat S (seat back S2) to the back panel 80 can be made easier.

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, and the vehicle can be used. The work of attaching the seat S (headrest S3) to the back panel 80 can be made easier.

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 arranged at the center in the left-right direction of the seat frame F, the second fixing portion 40 is provided. The upper and lower sides 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. As a result, both the seat back S2 and the headrest S3 can be firmly fixed by the back panel 80.

Further, since the width of the lower end portion 52A of the third fixing portion 50 in the left-right direction becomes smaller toward the bottom, it is easy to engage the third fixing portion 50 with the engaging portion 81 of the back panel 80. This makes it easier to attach the vehicle seat S to the back panel 80.

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

Further, 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 higher than that in the case where the third fixing portion and the fourth wire frame (wire frame) are separately provided. Can be reduced. Further, since the work of attaching the third fixing portion to the seat frame F becomes unnecessary, the work of assembling 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, bends and extends downward, as compared with 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 the pad with a recess for exposing the third fixing portion, the shape of the pad 60 covering the seat frame F can be simply configured. Further, as compared with the case where the third fixing portion is arranged in the recess provided on the back surface of the pad, the shape of the engaging portion 81 (the portion to which the third fixing portion 50 is attached) of the back panel 80 is simpler. It can be configured.

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

Although one embodiment of the invention has been described above, the present invention is not limited to the above embodiment. The specific configuration can be appropriately changed as described below without departing from the spirit of the invention.
For example, the arrangement and number of the first fixing portion 30, the second fixing portion 40, and the third fixing portion 50 described in the above embodiment are examples, and are not limited to the configuration of the above embodiment. For example, a plurality of second fixing portions and third fixing portions may be provided. Further, for example, when two second fixing portions are provided so as to be separated from each other to the left and right, the second fixing portions may not be arranged at the center in the left-right direction of the seat frame. The same applies to the third fixed portion. Further, the first fixing portion may be configured to extend beyond the left and right edges of the seat back to the outside in the left-right direction. The same applies to the second fixed portion.

Further, in the above-described embodiment, the width of the lower end portion 52A in the left-right direction of the third fixing portion 50 becomes smaller as the width decreases downward, but the third fixing portion 50 is not limited to this, and for example, the third fixing portion is the upper end portion thereof. The width in the left-right direction of the whole including is may become smaller as it goes down. Further, in the above embodiment, the third fixing portion 50 is provided so as to project rearward from the back surface S21 of the seat back S2, but the present invention is not limited to this, and the third fixing portion projects rearward from the back surface of the seat back. Instead, for example, it may be provided inside the contour of the seat back when viewed from the left and right. Further, in the above embodiment, the third fixing portion 50 is integrally formed with the seat frame F (wire frame 20), but the present invention is not limited to this, and for example, the third fixing portion is the first of the above-described embodiments. Similar to the fixing portion 30, the bracket may be fixed to the seat frame.

Further, in the above-described embodiment, the pipe frame 10 as the first frame is a frame made of pipes, and the wire frame 20 as the second frame is a frame made of wires, but the present invention is not limited thereto. For example, the first frame may be a frame made of a metal plate. Further, the second frame may be, for example, a frame made of a pipe, a frame made of a metal plate, or the like. Further, the first frame and the second frame may be frames in which frames made of different members are connected. For example, it may be a frame in which a frame made of a pipe and a frame made of a metal plate are connected, a frame made of a pipe and a frame made of a wire connected, and the like. When both the first frame and the second frame are frames made of pipes, the diameters of the pipes may be the same or different.

Further, in the above embodiment, the first fixing portion 30 and the second fixing portion 40 are fixed to the pipe frame 10 as the first frame by welding, but the present invention is not limited to this, and for example, the first fixing portion and the first fixing portion 40 are fixed. 2 The fixing portion may be fixed to the first frame by a bolt, caulking or the like. Further, in the above embodiment, the first fixing portion 30 and the second fixing portion 40 are both provided in the pipe frame 10, that is, the same frame, but the present invention is not limited to this, and the first fixing portion and the second fixing portion 40 are provided. The fixing portion may be provided in a different frame.

Further, in the above-described embodiment, the pipe frame 10 as the first frame constitutes the upper portion (part) of the seat back S2 and the internal frame of the entire headrest S3, but the present invention is not limited to this. For example, the first frame may be a frame constituting the 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.

Further, in the above embodiment, the first fixing portion 30 and the second fixing portion 40 are brackets fixed to the seat frame F, but the present invention is not limited to this, and for example, the first fixing portion and the second fixing portion may be used. At least one of them may be integrally formed with the seat frame as a part of the seat frame, similarly to the third fixing portion 50 of the embodiment. Further, 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, but the present invention is not limited to this, and for example, after the back panel. The first fixing portion may be provided inside the contour of the seat back when viewed from the front side, as long as it can be fastened to the first fixing portion through a screw or the like from the side. The same applies to the second fixed portion.

Further, in the above embodiment, the vehicle seat S mounted on the light truck is exemplified as the vehicle seat, but the vehicle seat is not limited to this, and the vehicle seat is a seat mounted on an automobile other than the light truck. May be good. Further, the vehicle seat may be a seat mounted on a vehicle other than an automobile, for example, a railroad vehicle, a ship, an aircraft, or the like.

In addition, the elements described in the above-described embodiments and modifications can be combined and implemented as appropriate.

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

Claims (11)

A vehicle seat in which the headrest is integrated with the seat back,
The seat frame constituting the inner frame of the seat back and the headrest, and
A first fixing portion for fixing the portion of the seat frame corresponding to the seat back to the body of the vehicle,
A second fixing portion for fixing a portion of the seat frame corresponding to the headrest to the body is provided .
The first fixing portion and the second fixing portion are brackets fixed to the seat frame.
Two first fixing portions are provided so as to be separated from each other on the left and right sides.
The boundary portion of the headrest with the seat back is the whole of the seat frame and the two fixing portions of the first fixing portion, and the seat frame and the second fixing portion as a whole when viewed from the front side. A vehicle seat characterized by being located inside a triangle connecting a fixed part . A vehicle seat in which the headrest is integrated with the seat back,
The seat frame constituting the inner frame of the seat back and the headrest, and
A first fixing portion for fixing the portion of the seat frame corresponding to the seat back to the body of the vehicle,
A second fixing portion for fixing the portion of the seat frame corresponding to the headrest to the body, and
A third fixing portion for fixing the lower end portion of the portion of the seat frame corresponding to the seat back to the body is provided .
The second fixing portion and the third fixing portion are arranged at the center in the left-right direction of the seat frame.
The seat frame has a first frame that constitutes an upper portion of the seat back and an inner frame of the headrest, and a second frame that constitutes the inner frame of the seat back together with the first frame.
The second frame includes a third frame extending vertically in the center in the left-right direction.
The third fixing portion is a vehicle seat characterized in that it is integrally formed with the third frame . A vehicle seat in which the headrest is integrated with the seat back,
The seat frame constituting the inner frame of the seat back and the headrest, and
A first fixing portion for fixing the portion of the seat frame corresponding to the seat back to the body of the vehicle,
A second fixing portion for fixing the portion of the seat frame corresponding to the headrest to the body, and
A third fixing portion for fixing the lower end portion of the portion of the seat frame corresponding to the seat back to the body is provided .
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 is a vehicle seat characterized in that it protrudes rearward from the back surface of the seat back, bends and extends downward . The seat frame includes at least a part of the seat back and a first frame constituting the inner frame of the headrest.
The vehicle seat according to claim 1 or 3 , wherein both the first fixing portion and the second fixing portion are provided in the first frame. The seat frame has a second frame constituting the inner frame of the seat back together with the first frame.
The vehicle seat according to claim 4 , wherein the second frame is fixed to the first frame. The first frame and the second frame are made of linear members.
The vehicle seat according to claim 2 or 5 , wherein the second frame has a diameter smaller than that of the first frame. Any of claims 1 to 6 , wherein the portion of the first fixing portion fixed to the body extends to the outside of the contour of the seat back when viewed from the front side. The vehicle seat according to item 1. Any one of claims 1 to 7 , wherein the portion of the second fixing portion fixed to the body extends to the outside of the contour of the headrest when viewed from the front side. The vehicle seat described in the section. A third fixing portion for fixing the lower end portion of the portion of the seat frame corresponding to the seat back to the body is provided.
The vehicle seat according to claim 1 , 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 is characterized in that it can engage with the engaging portion provided on the body from top to bottom, and at least the width of the lower end portion in the left-right direction becomes smaller toward the bottom. The vehicle seat according to any one of claims 2, 3, and 9 . Two first fixing portions are provided apart from each other on the left and right, and each is arranged between the second fixing portion and the third fixing portion in the vertical direction.
2. The vehicle seat according to any one of 10 .

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