Vehicle seats

Abstract

To provide a vehicular seat that can increase torsional rigidity of a back frame while suppressing increase in size of an upper frame.SOLUTION: A vehicular seat includes a seat cushion, a seat back, a headrest, and a back frame for supporting the seat back. The back frame includes: a first side frame and a second side frame disposed while being separated from each other in a sheet width direction; a cylindrical upper frame for connecting the first side frame to the second side frame in the sheet width direction; a reinforcement panel fixed to the first side frame, the second side frame and the upper frame; and at least one support bracket supporting the headrest and fixed to the upper frame and the reinforcement panel.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to vehicle seats. [Background technology]

[0002] There are vehicle seats that use a cylindrical pipe frame as the upper frame of the back frame (see Patent Document 1). A bracket that supports a headrest is fixed to the upper frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 8,020,932 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to increase the torsional rigidity of a back frame using a cylindrical upper frame, it is necessary to increase the plate thickness or diameter of the upper frame. However, such an increase in size of the upper frame leads to a decrease in formability, an increase in weight, and an increase in cost.

[0005] An object of one aspect of the present disclosure is to provide a vehicle seat that can increase the torsional rigidity of a back frame while suppressing an increase in size of an upper frame. [Means for solving the problem]

[0006] One aspect of the present disclosure is a vehicle seat (1) including a seat cushion (2), a seat back (3), a headrest (4), and a back frame (5) that supports the seat back (3).

[0007] The back frame (5) includes a first side frame (51) and a second side frame (52) arranged apart from each other in the seat width direction, a cylindrical upper frame (53) connecting the first side frame (51) and the second side frame (52) in the seat width direction, a reinforcing panel (54) fixed to the first side frame (51), the second side frame (52) and the upper frame (53), and at least one support bracket (55A, 55B) that supports the headrest (4) and is fixed to the upper frame (53) and the reinforcing panel (54).

[0008] According to this configuration, the reinforcing panel (54) is fixed across the first side frame (51), the second side frame (52), and the upper frame (53), thereby increasing the torsional rigidity of the cylindrical upper frame (53).

[0009] Furthermore, by fixing the support brackets (55A, 55B) to the reinforcing panel (54) in addition to the upper frame (53), the headrest (4) is prevented from falling over during a vehicle collision, and the support brackets (55A, 55B) function as rigid members. As a result, the torsional rigidity of the back frame (5) can be increased while keeping the thickness or diameter of the upper frame (53) small.

[0010] In one aspect of the present disclosure, the reinforcing panel (54) may have a first fixing portion (542) fixed to the first side frame (51), a second fixing portion (543) fixed to the second side frame (52), a third fixing portion (544) fixed to the upper frame (53), and a recess (545) sandwiched between the first fixing portion (542) and the second fixing portion (543) in the seat width direction and at least a portion of which is located above the seat with respect to the first fixing portion (542) and the second fixing portion (543). With this configuration, the rigidity of the reinforcing panel (54) is increased, and the effect of improving the torsional rigidity of the back frame (5) can be promoted.

[0011] In one aspect of the present disclosure, the reinforcing panel (54) may have a protruding portion (546) that protrudes forward from the seat forward of a fixed position of the reinforcing panel (54) to the first side frame (51) and a fixed position of the reinforcing panel (54) to the second side frame (52). The protruding portion (546) may have a first plate portion (546A) that extends in the front-rear direction of the seat and a second plate portion (546B) that protrudes downward from a front end of the first plate portion (546A). With this configuration, the rigidity of the reinforcing panel (54) is increased, and the effect of improving the torsional rigidity of the back frame (5) can be promoted.

[0012] In one embodiment of the present disclosure, the seat back (3) may have an armrest pad (32A) disposed behind the reinforcing panel (54). The protruding portion (546) may position the armrest pad (32A) by contacting the armrest pad (32A). With this configuration, the reinforcing panel (54) can be provided with a positioning function for the armrest pad (32A). As a result, the number of parts of the vehicle seat (1) can be reduced.

[0013] In one aspect of the present disclosure, the reinforcing panel (54) may have a protective portion (547) at least a portion of which is disposed above and behind the seat of the upper frame (53). With this configuration, the reinforcing panel (54) can be provided with a function of protecting the upper frame (53) from the rear of the seat (i.e., a function of receiving the head form during internal protrusion evaluation). As a result, the number of parts of the vehicle seat (1) can be reduced.

[0014] One aspect of the present disclosure may be used as a center seat of an automobile. With such a configuration, in a center seat having a narrow seat width (i.e., a small axial length of the upper frame (53)), the torsional rigidity of the back frame (5) can be effectively increased.

[0015] In one embodiment of the present disclosure, the seat back (3) is configured to swing between a seat position where it functions as a backrest and a forward-leaning position where it is placed on the seat cushion (2), and may have an armrest portion (32) that functions as an armrest in the forward-leaning position. With this configuration, the seat back (3) can function as an armrest for another seat.

[0016] Another aspect of the present disclosure is a vehicle seat (1) including a seat cushion (2), a seat back (3), a headrest (4), and a back frame (5) that supports the seat back (3).

[0017] The back frame (5) includes a first side frame (51) and a second side frame (52) arranged apart from each other in the seat width direction, an upper frame (53) connecting the first side frame (51) and the second side frame (52) in the seat width direction, a reinforcing panel (54) fixed to the first side frame (51), the second side frame (52) and the upper frame (53), and at least one support bracket (55A, 55B) that supports the headrest (4) and is fixed to the upper frame (53).

[0018] The reinforcing panel (54) has a protective portion (547) at least a portion of which is disposed above the seat and behind the seat of the upper frame (53).

[0019] According to this configuration, the reinforcing panel (54) is fixed across the first side frame (51), the second side frame (52), and the third side frame (53), thereby increasing the torsional rigidity of the upper frame (53). As a result, the torsional rigidity of the back frame (5) can be increased while keeping the thickness or diameter of the upper frame (53) small. In addition, the reinforcing panel (54) can be provided with a function of protecting the upper frame (53) from the rear of the seat, thereby reducing the number of parts of the vehicle seat (1).

[0020] Note that the symbols in the above parentheses are examples showing the correspondence with the specific configurations etc. described in the embodiments described below, and the present disclosure is not limited to the specific configurations etc. shown by the symbols in the above parentheses. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a schematic perspective view showing a vehicle seat according to an embodiment. [Diagram 2] 2A and 2B are schematic perspective views of the seat back and the back frame of FIG. [Diagram 3] FIG. 3 is a schematic perspective view of the headrest of FIG. 1 and the back frame of FIG. 2A. [Figure 4] 4A and 4B are schematic perspective views of the first side frame, the second side frame and the upper frame of FIG. [Diagram 5] 5A and 5B are schematic perspective views of the reinforcing panel of FIG. [Figure 6] FIG. 6 is a schematic rear view of the back frame of FIG. [Figure 7] 7A is a schematic cross-sectional view taken along line VIIA-VIIA in FIG. 2A, and FIG. 7B is a schematic cross-sectional view taken along line VIIB-VIIB in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, embodiments to which the present disclosure is applied will be described with reference to the drawings. [1. First embodiment] [1-1. Configuration] The vehicle seat 1 shown in FIG. 1 includes a seat cushion 2, a seat back 3, and a headrest 4.

[0023] The vehicle seat 1 is used as a center seat of a passenger vehicle. Specifically, the vehicle seat 1 is disposed between a right seat 101 and a left seat 102 in the width direction of the passenger vehicle.

[0024] In the following description and in each drawing, the directions refer to the directions when the vehicle seat 1 is assembled to a vehicle (i.e., a passenger car). In this embodiment, the seat width direction coincides with the left-right direction of the vehicle, and the front of the seat coincides with the front of the vehicle.

[0025] The seat cushion 2 is a portion that supports the buttocks of a seated occupant. The seat back 3 is a portion that supports the back of the seated occupant. The headrest 4 is a portion that supports the head of the seated occupant. As shown in Figs. 2A and 2B, the vehicle seat 1 further includes a back frame 5 that supports the seat back 3.

[0026] <Seat back> The seat back 3 is configured to swing between a seat position where it functions as a backrest for the vehicle seat 1 and a forward-leaning position where it is placed on the seat cushion 2. In the following, unless otherwise specified, "above the seat" and "below the seat" refer to the up and down directions when the seat back 3 is in the seat position.

[0027] The seat back 3 has a back portion 31, an armrest portion 32, a first headrest insertion hole 33A, and a second headrest insertion hole 33B. The back portion 31 constitutes the front surface of the seat back 3 when the seat back 3 is in the seat position, and is a portion that supports a seated occupant from behind.

[0028] The armrest portion 32 constitutes the back surface of the seat back 3 when the seat back 3 is in the seat position. When the seat back 3 is in the forward-folded position, the armrest portion 32 is disposed above the back portion 31 and supports the arms of the occupants of the right seat 101 and the left seat 102. In other words, the armrest portion 32 functions as an armrest in the forward-folded position.

[0029] The headrest insertion holes 33A and 33B are provided at an upper end of the seat back 3. A first stay 42A and a second stay 42B of the headrest 4 shown in FIG. 3 are inserted into the first headrest insertion hole 33A and the second headrest insertion hole 33B, respectively.

[0030] <Headrest> As shown in FIG. 3, the headrest 4 includes a headrest main body 41, a first stay 42A, a second stay 42B, and a position adjustment mechanism 43.

[0031] The first stay 42A and the second stay 42B extend downward from the headrest main body 41, and are inserted into the first support bracket 55A or the second support bracket 55B of the back frame 5 from above the seat.

[0032] The position adjustment mechanism 43 adjusts the vertical positions of the stays 42A, 42B relative to the support brackets 55A, 55B to change the height of the headrest main body 41. The position adjustment mechanism 43 is attached to the support brackets 55A, 55B.

[0033] <Back frame> The back frame 5 has a first side frame 51, a second side frame 52, an upper frame 53, a reinforcing panel 54, a first support bracket 55A, and a second support bracket 55B.

[0034] (Side frame) The first side frame 51 and the second side frame 52 each extend in the up-down direction of the seat and are spaced apart from each other in the width direction of the seat. The first side frame 51 is disposed on the left side of the second side frame 52.

[0035] 4A and 4B, the first side frame 51 has a first tubular portion 56B and a first panel 57. The first tubular portion 56B is the left leg of two legs extending below the seat of the U-shaped pipe 56 constituting the back frame 5. The central axis of the first tubular portion 56B is perpendicular to the seat width direction and intersects with the seat front-rear direction.

[0036] The first panel 57 has a plate surface that intersects with the seat width direction. An upper end of the first panel 57 is fixed to an end of the first cylindrical portion 56B (i.e., one end of the U-shaped pipe 56) by, for example, welding.

[0037] The second side frame 52 has a second tubular portion 56C, a second panel 58, and a swing mechanism 59. The second tubular portion 56C is the right leg of the two legs of the U-shaped pipe 56. The central axis of the second tubular portion 56C is parallel to the central axis of the first tubular portion 56B.

[0038] The second panel 58 has a plate surface that intersects with the seat width direction. An upper end of the second panel 58 is fixed to an end of the second tubular portion 56C (i.e., the other end of the U-shaped pipe 56) by, for example, welding.

[0039] The swing mechanism 59 swingably connects the back frame 5 to a cushion frame (not shown) that supports the seat cushion 2. The swing mechanism 59 is attached to the second panel 58.

[0040] (Upper frame) The upper frame 53 connects the first side frame 51 and the second side frame 52 in the seat width direction.

[0041] The upper frame 53 is configured by a cylindrical pipe frame. Specifically, the upper frame 53 is configured by a main body portion 56A of a U-shaped pipe 56 that extends in the seat width direction.

[0042] The upper frame 53 has a closed cross section. The central axis of the upper frame 53 is parallel to the seat width direction. The upper frame 53 has a shape obtained by crushing a circular tube from the front of the seat. In other words, the upper frame 53 has a flat front surface and an arc-shaped (i.e., C-shaped) rear surface when viewed from the central axis direction.

[0043] The U-shaped pipe 56 is composed of a main body portion 56A, two legs extending below the seat (i.e., a first tubular portion 56B and a second tubular portion 56C), a first connecting portion 56D connecting the left end of the main body portion 56A to the first tubular portion 56B, and a second connecting portion 56E connecting the right end of the main body portion 56A to the second tubular portion 56C.

[0044] The U-shaped pipe 56 is formed by bending a circular tube into a U-shape. The first connecting portion 56D and the second connecting portion 56E are curved in an arc shape when viewed from the front of the seat. The first connecting portion 56D and the second connecting portion 56E have a flattened front surface together with the main body portion 56A.

[0045] (Reinforcement panel) As shown in Figures 5A and 5B, the reinforcing panel 54 is a plate-shaped member having a base portion 541, a first fixing portion 542, a second fixing portion 543, a third fixing portion 544, a recess 545, a protrusion 546, and a protective portion 547.

[0046] The base portion 541 has a plate surface that intersects with the seat front-rear direction. The first fixed portion 542 is a portion that extends leftward from the left end portion of the base portion 541. The first fixed portion 542 is fixed to the first side frame 51. The second fixed portion 543 is a portion that extends rightward from the right end portion of the base portion 541. The second fixed portion 543 is fixed to the second side frame 52.

[0047] 6, the first fixing portion 542 contacts the first tubular portion 56B from the rear of the seat and is fixed to the first tubular portion 56B by means of, for example, welding, fastening, etc. The second fixing portion 543 contacts the second tubular portion 56C from the rear of the seat and is fixed to the second tubular portion 56C by means of, for example, welding, fastening, etc.

[0048] The third fixed portion 544 is a portion extending above the seat from an upper end portion of the base portion 541. The third fixed portion 544 is fixed to the upper frame 53. Specifically, as shown in Fig. 7A, the third fixed portion 544 comes into contact with the upper frame 53 from the rear of the seat, and is fixed to the upper frame 53 by means of, for example, welding, fastening, or the like.

[0049] 5A is a portion recessed toward the rear of the seat with respect to the base portion 541. The recess 545 is provided in the center of the base portion 541 so as to connect the first fixing portion 542, the second fixing portion 543, and the third fixing portion 544.

[0050] Specifically, the recess 545 is sandwiched between the first fixing portion 542 and the second fixing portion 543 in the seat width direction, and at least a portion of the recess 545 is located higher on the seat than the first fixing portion 542 and the second fixing portion 543. The width of the recess 545 decreases toward the upper portion of the seat. In other words, the planar shape of the recess 545 is a trapezoid whose lower side is longer than its upper side.

[0051] The protrusion 546 is a portion that protrudes forward of the seat further than the fixed position of the reinforcing panel 54 to the first side frame 51 (i.e., the first fixed portion 542) and the fixed position of the reinforcing panel 54 to the second side frame 52 (i.e., the second fixed portion 543).

[0052] The protruding portion 546 has a first plate portion 546A and a second plate portion 546B. The first plate portion 546A extends toward the front of the seat from the lower end portion of the base portion 541. The second plate portion 546B protrudes toward the bottom of the seat from the front end of the first plate portion 546A.

[0053] As shown in Fig. 7A, the seat back 3 has a back pad 31A constituting the back portion 31 and an armrest pad 32A constituting the armrest portion 32. The back pad 31A is disposed in front of the reinforcing panel 54. The armrest pad 32A is disposed behind the reinforcing panel 54. The reinforcing panel 54 is disposed in a space provided between the back pad 31A and the armrest pad 32A.

[0054] The armrest pad 32A is in contact with the protruding portion 546. Specifically, the armrest pad 32A has a corner portion 32B curved along the seat underside surface of the first plate portion 546A and the seat rear surface of the second plate portion 546B. The protruding portion 546 positions the armrest pad 32A by contacting the corner portion 32B.

[0055] The armrest pad 32A further contacts a first fixing portion 542, a second fixing portion 543 and a third fixing portion 544 from the rear of the seat.

[0056] The back pad 31A contacts the first plate portion 546A from above the seat, and also contacts the base portion 541 from the front of the seat. Therefore, the first plate portion 546A is sandwiched in the seat vertical direction between the back pad 31A and the armrest pad 32A.

[0057] The protective portions 547 are provided above the seat and on the left and right sides of the third fixing portion 544, and at least a portion of the protective portion 547 is disposed above the seat and behind the seat of the upper frame 53. As shown in Figures 5A and 5B, the protective portion 547 has a first rear wall 547A, a second rear wall 547B, a first side wall 547C, a second side wall 547D, and a top wall 547E.

[0058] The first rear wall 547A is a portion that protrudes leftward from the left end of the third fixed portion 544. The second rear wall 547B is a portion that protrudes rightward from the right end of the third fixed portion 544. The first rear wall 547A and the second rear wall 547B each cover the upper frame 53 from the rear of the seat.

[0059] The first side wall 547C is a portion that protrudes forward from the left end of the first rear wall 547A to a position where it overlaps with the first support bracket 55A in the seat width direction. The second side wall 547D is a portion that protrudes forward from the right end of the second rear wall 547B to a position where it overlaps with the second support bracket 55B in the seat width direction. The first side wall 547C covers the upper frame 53 from the left. The second side wall 547D covers the upper frame 53 from the right.

[0060] The top wall 547E includes portions protruding toward the front of the seat from the upper ends of the third fixed portion 544, the first rear wall 547A and the second rear wall 547B, a portion protruding to the right from the upper end of the first side wall 547C, and a portion protruding to the left from the upper end of the second side wall 547D.

[0061] 7A and 7B, the top wall 547E covers the upper frame 53 from above the seat. A tip of the top wall 547E is separated from the upper frame 53. In addition, the armrest pad 32A comes into contact with the top wall 547E from above the seat.

[0062] (Support bracket) The first support bracket 55A and the second support bracket 55B shown in FIG.

[0063] The first stay 42A or the second stay 42B is inserted into the first support bracket 55A or the second support bracket 55B, and the position adjustment mechanism 43 of the headrest 4 is attached thereto.

[0064] The first support bracket 55A and the second support bracket 55B are each fixed to the upper frame 53. Specifically, as shown in Fig. 7B, the seat rear surfaces of the first support bracket 55A and the second support bracket 55B are fixed to the seat front surface (i.e., the flat surface) of the upper frame 53 by means of, for example, welding, fastening, or the like.

[0065] Furthermore, the first support bracket 55A and the second support bracket 55B are each fixed to the reinforcing panel 54 below the seat relative to the upper frame 53. Specifically, the lower ends of the first support bracket 55A and the second support bracket 55B contact a base 541 of the reinforcing panel 54 from the front of the seat and are fixed to the base 541 by means of, for example, welding, fastening, or the like.

[0066] [1-2. Effects] According to the embodiment described above in detail, the following effects can be obtained. (1a) The reinforcing panel 54 is fixed across the first side frame 51, the second side frame 52, and the upper frame 53, thereby increasing the torsional rigidity of the cylindrical upper frame 53.

[0067] Furthermore, by fixing the support brackets 55A, 55B to the reinforcing panel 54 in addition to the upper frame 53, the headrest 4 is prevented from collapsing during a vehicle collision, and the support brackets 55A, 55B function as rigid members. As a result, the torsional rigidity of the back frame 5 can be increased while the thickness or diameter of the upper frame 53 is kept small.

[0068] (1b) The recess 545 increases the rigidity of the reinforcing panel 54, which can enhance the effect of improving the torsional rigidity of the back frame 5. (1c) The rigidity of the reinforcing panel 54 is also increased by the protrusion 546, which can enhance the effect of improving the torsional rigidity of the back frame 5.

[0069] (1d) The protrusion 546 comes into contact with the armrest pad 32A, so that the reinforcing panel 54 can have a positioning function for the armrest pad 32A. As a result, the number of parts of the vehicle seat 1 can be reduced.

[0070] (1e) The protective portion 547 allows the reinforcing panel 54 to have a function of protecting the upper frame 53 from the rear of the seat (i.e., a function of receiving the head form during internal protrusion evaluation). As a result, the number of parts of the vehicle seat 1 can be reduced.

[0071] (1f) In a center seat having a narrow seat width (that is, the axial length of the upper frame 53 is small), the torsional rigidity of the back frame 5 can be effectively increased. (1g) The armrest portion 32 allows the seat back 3 to function as an armrest for the other seats 101, 102.

[0072] 2. Other embodiments Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above-described embodiments and can take various forms.

[0073] (2a) In the vehicle seat of the above embodiment, the portions of the first side frame and the second side frame to which the reinforcing panel is fixed do not necessarily have to be cylindrical (i.e., a part of a U-shaped pipe). For example, the reinforcing panel may be fixed to the open cross-sectional portion of the first side frame and the open cross-sectional portion of the second side frame.

[0074] (2b) In the vehicle seat of the above embodiment, the reinforcing panel does not necessarily have to include all of the recessed portion, the protruding portion, and the protective portion. In other words, the reinforcing panel does not necessarily have to include at least one of the recessed portion, the protruding portion, and the protective portion.

[0075] (2c) In the vehicle seat of the above embodiment, the seat back does not necessarily have to have an armrest portion. In other words, the seat back does not necessarily have to function as an armrest.

[0076] (2d) The vehicle seat of the above embodiment can be applied to seats other than the center seat in an automobile. Furthermore, the vehicle seat of the above embodiment can be applied to seats used in automobiles other than passenger cars, and seats used in vehicles other than automobiles, such as railroad cars, ships, and aircraft.

[0077] (2e) The function of one component in the above embodiments may be distributed among multiple components, or the functions of multiple components may be integrated into one component. In addition, a part of the configuration of the above embodiments may be omitted. In addition, at least a part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments. Note that all aspects included in the technical idea identified from the wording of the claims are embodiments of the present disclosure. [Explanation of symbols]

[0078] 1...vehicle seat, 2...seat cushion, 3...seat back, 4...headrest, 5...back frame, 31...back section, 32...armrest section, 32A... armrest pad, 41... headrest body, 42A, 42B... stay, 43: position adjustment mechanism, 51: first side frame, 52: second side frame, 53...upper frame, 54...reinforcement panel, 55A, 55B...support bracket, 56...U-shaped pipe, 56A...main body portion, 56B...first cylindrical portion, 56C...second cylindrical portion, 56D, 56E...connecting portion, 57, 58...panel, 59...oscillating mechanism, 541...base portion, 542: first fixing portion, 543: second fixing portion, 544: third fixing portion, 545: recessed portion, 546...Protrusion part, 546A...First plate part, 546B...Second plate part, 547...Protection part, 547A, 547B...Back wall, 547C, 547D...Side wall, 547E...Ceiling wall.

Claims

1. Seat cushion and Seat back and A headrest and A back frame supporting the seat back; Equipped with The back frame is A first side frame and a second side frame arranged apart from each other in a seat width direction; a cylindrical upper frame that connects the first side frame and the second side frame in a seat width direction; a reinforcing panel fixed to the first side frame, the second side frame, and the upper frame; at least one support bracket supporting the headrest and fixed to the upper frame and the reinforcing panel; Equipped with A vehicle seat used as the center seat of an automobile.

2. 2. The vehicle seat according to claim 1, The vehicle seat is configured to swing between a seat position in which the seat back functions as a backrest and a forward-leaning position in which the seat back is placed on the seat cushion, and has an armrest portion that functions as an armrest in the forward-leaning position.

3. Seat cushion and Seat back and A headrest and A back frame supporting the seat back; Equipped with The back frame is A first side frame and a second side frame arranged apart from each other in a seat width direction; a cylindrical upper frame that connects the first side frame and the second side frame in a seat width direction; a reinforcing panel fixed to the first side frame, the second side frame, and the upper frame; at least one support bracket that supports the headrest, is in direct contact with the reinforcing panel, and is fixed to the upper frame and the reinforcing panel; A vehicle seat comprising:

4. Seat cushion and Seat back and A headrest and A back frame supporting the seat back; Equipped with The back frame is A first side frame and a second side frame arranged apart from each other in a seat width direction; a cylindrical upper frame that connects the first side frame and the second side frame in a seat width direction; a reinforcing panel having a first fixing portion fixed to the first side frame, a second fixing portion fixed to the second side frame, a third fixing portion fixed to the upper frame, and a recessed portion sandwiched between the first fixing portion and the second fixing portion; at least one support bracket supporting the headrest and fixed to the upper frame and the reinforcing panel; A vehicle seat comprising:

5. The vehicle seat according to claim 4, At least a portion of the recess is located above the first fixing portion and the second fixing portion.

6. Seat cushion and Seat back and A headrest and A back frame supporting the seat back; Equipped with The back frame is A first side frame and a second side frame arranged apart from each other in a seat width direction; a cylindrical upper frame that connects the first side frame and the second side frame in a seat width direction; a reinforcing panel fixed to the first side frame, the second side frame, and the upper frame; at least one support bracket supporting the headrest and fixed to the upper frame and the reinforcing panel; Equipped with The reinforcing panel comprises: The seat cushion includes a base having a plate surface intersecting with a front-rear direction of the seat, a first fixing portion extending leftward from a left end portion of the base, a second fixing portion extending rightward from a right end portion of the base, and a third fixing portion extending upward from an upper end portion of the base, The vehicle seat, wherein the first fixed portion is fixed to the first side frame, the second fixed portion is fixed to the second side frame, and the third fixed portion is fixed to the upper frame.

7. A vehicle seat according to any one of claims 1 to 6, the reinforcing panel has a protruding portion that protrudes forward of the seat further than a fixed position of the reinforcing panel to the first side frame and a fixed position of the reinforcing panel to the second side frame, The protrusion is A first plate portion extending in a front-rear direction of the seat; a second plate portion protruding downward from a front end of the first plate portion; A vehicle seat having the above features.

8. The vehicle seat according to claim 7, The seat back has an armrest pad disposed behind the reinforcing panel, The vehicle seat, wherein the protrusion positions the armrest pad by contacting the armrest pad.

9. A vehicle seat according to any one of claims 1 to 8, The vehicle seat, wherein the reinforcing panel has a protective portion, at least a portion of which is positioned above the seat and behind the seat of the upper frame.

10. Seat cushion and Seat back and A headrest and A back frame supporting the seat back; Equipped with The back frame is A first side frame and a second side frame arranged apart from each other in a seat width direction; an upper frame connecting the first side frame and the second side frame in a seat width direction; a reinforcing panel fixed to the first side frame, the second side frame, and the upper frame; at least one support bracket supporting the headrest and fixed to the upper frame; Equipped with The vehicle seat, wherein the reinforcing panel has a protective portion, at least a portion of which is positioned above the seat and behind the seat of the upper frame.

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