Vehicle seat

Abstract

To expand a lift adjustment range of a vehicle seat.SOLUTION: A vehicle seat 10 includes: a seat body 12; and side brackets 20 provided at the outer side of side parts of the seat body 12. The side bracket 20 includes an upper bracket 40 and a lower bracket 30. The upper bracket 40 is fastened to an outer side surface 13 of the seat body 12 and fastened to the lower bracket 30. The lower bracket 30 is directly or indirectly fastened to a vehicle floor. The lower bracket 30 and the upper bracket 40 are fastened by a front fastening part 50 and a rear fastening part 60 which are spaced apart from each other in a front-back direction of the seat body 12. The front fastening part 50 and the rear fastening part 60 respectively have adjustment parts 52, 62 which fasten the lower bracket 30 and the upper bracket 40 to each other while allowing change of a position in a vertical direction or a position in front-back and vertical directions of the upper bracket 40 relative to the lower bracket 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a lifter adjustment structure for a vehicle seat. [Background technology]

[0002] Vehicles such as automobiles are equipped with seats. A known example of a vehicle seat is a full bucket seat (hereinafter referred to as a bucket seat), in which a seat cushion on which an occupant sits and a seat back for the occupant are integrally formed.

[0003] A bucket seat includes a seat body and side brackets provided on the outside of both the left and right sides of the seat body. The seat body is fixed to the vehicle floor via the side brackets. Patent Document 1 discloses a structure for fixing a bucket seat to a vehicle floor. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-10389 Summary of the Invention [Problem to be solved by the invention]

[0005] 6(A) is a side view showing an example of a conventional bucket seat 110. The bucket seat 110 includes a seat body 112 and a side bracket 120 that is provided on the outer side of the seat body 112 and fastened to the vehicle floor via a seat rail (not shown). A vertically extending elongated hole 156 is provided in the front of the side bracket 120 to adjust the vertical position of the seat body 112 relative to the vehicle floor. In addition, a plurality of vertically aligned bolt insertion holes 166 are provided in the rear of the side bracket 120.

[0006] At the front of the side bracket 120, a fastening bolt 154 is inserted into an elongated hole 156 and fastened to a female thread provided in the side surface 113 of the seat main body 112. At the rear of the side bracket 120, a fastening bolt 164 is inserted into one of a plurality of bolt insertion holes 166 and fastened to a female thread provided in the side surface 113 of the seat main body 112. The vertical position of the seat main body 112 relative to the side bracket 120 (i.e., the vehicle floor) can be changed depending on the position of the fastening bolt 154 within the elongated hole 156 and the bolt insertion hole 166 through which the fastening bolt 164 is inserted.

[0007] Here, it is considered to increase the adjustment range of the seat main body 112 in the up-down direction and also enable adjustment of the seat main body 112 in the front-to-rear direction. In this case, as shown in Fig. 6(B), it is necessary to provide an extension portion 181 that protrudes forward and upward at the front of the side bracket 120, and to provide an elongated hole or a bolt insertion hole therein. In addition, it is necessary to provide an extension portion 182 that protrudes forward and upward at the rear of the side bracket 120, and to provide an elongated hole or a bolt insertion hole therein.

[0008] However, for example, since the side edge 114 of the seat cushion of the seat main body 112 may protrude outward, when the seat main body 112 is fastened to the side bracket 120 at a low position, as shown by arrow N1 in FIG. 6(B), the side edge 114 and the extension portion 181 interfere with each other. In addition, an inner buckle 119 of the seat belt is fastened to the rear of the side bracket 120. If the extension portion 182 is provided at the rear of the side bracket 120, the extension portion 182 may interfere with the insertion of the tongue of the seat belt into the inner buckle 119, as shown by arrow N2. For this reason, in practice, it is not possible or difficult to provide the extension portions 181, 182 at the front and rear of the side bracket 120.

[0009] Here, we have described expanding the adjustment range of the seat body 112 in the front-to-back and up-down directions. However, in Figure 6(A), even if the adjustment range of the seat body 112 is expanded only in the up-and-down direction, the same problem as above will arise, so it is not possible or difficult to provide extension portions that protrude upward at the front and rear of the side bracket 120.

[0010] Therefore, a structure that can expand the adjustment range for the up-down position adjustment of the seat body relative to the vehicle floor or the front-to-back vertical position adjustment is desired. Hereinafter, the up-down position adjustment of the seat body relative to the vehicle floor or the front-to-back vertical position adjustment is referred to as lifter adjustment.

[0011] SUMMARY OF THE INVENTION An object of the present invention is to expand the range of adjustment of a lifter of a vehicle seat. [Means for solving the problem]

[0012] The vehicle seat of the present invention comprises a seat body and a side bracket provided on the outside of a side of the seat body, the side bracket including an upper bracket and a lower bracket, the upper bracket fastened to the outer surface of the seat body and also fastened to the lower bracket, the lower bracket fastened directly or indirectly to a vehicle floor, the lower bracket and the upper bracket fastened by a front fastening portion and a rear fastening portion spaced apart in the fore-and-aft direction of the seat body, the front fastening portion and the rear fastening portion each including an adjustment portion that enables the position of the upper bracket relative to the lower bracket in the up-and-down direction or the front-to-back up-and-down direction to be changed and the upper bracket and the lower bracket fastened to each other.

[0013] According to this configuration, the side bracket includes two components, a lower bracket and an upper bracket, and the lifter of the seat body can be adjusted by changing the position of the upper bracket relative to the lower bracket without changing the relative position of the seat body and the upper bracket. It is not necessary to extend the upper bracket upward to expand the lifter adjustment range. The fastening parts (front fastening part and rear fastening part) of the lower bracket and upper bracket can be provided with adjustment parts according to the desired lifter adjustment range, thereby expanding the lifter adjustment range.

[0014] In the vehicle seat according to the present invention, a seat belt buckle may be fastened to the upper bracket of the side bracket.

[0015] According to this configuration, the relative position of the buckle with respect to the seat body does not change before and after the seat lifter adjustment, i.e., the relative position of the buckle with respect to the seat body is maintained.

[0016] In the vehicle seat of the present invention, the adjustment portion of the front fastening portion and the adjustment portion of the rear fastening portion may each include a plurality of bolt insertion holes provided in at least one of the lower bracket and the upper bracket, through which fastening bolts are selectively inserted depending on the position of the upper bracket relative to the lower bracket.

[0017] In the vehicle seat of the present invention, the adjustment portion of the front fastening portion may include a plurality of bolt insertion holes provided in the lower bracket, through which fastening bolts are selectively inserted depending on the front-to-back, up-down position of the upper bracket relative to the lower bracket, and the adjustment portion of the rear fastening portion may include a plurality of bolt insertion holes provided in each of the lower bracket and the upper bracket, through which fastening bolts are selectively inserted depending on the front-to-back, up-down position of the upper bracket relative to the lower bracket. [Effects of the Invention]

[0018] According to the present invention, the adjustment range of the seat lifter can be expanded. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is a perspective view showing a bucket seat in the lowest position. [Figure 2] FIG. 2 is a perspective view showing a bucket seat in the highest position. [Figure 3] (A) is an oblique view of the lower bracket and upper bracket, (B) is a diagram showing the side bracket in the second lifter position, (C) is a diagram showing the side bracket in the third lifter position, and (D) is a diagram showing the side bracket in the fourth lifter position. [Figure 4] FIG. 10 is a perspective view showing a bucket seat with an adjusted torso angle. [Figure 5] 10A and 10B are diagrams illustrating the difference in lifter adjustment range between the embodiment and the prior art. [Figure 6] 1A and 1B are side views showing a bucket seat according to the prior art. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiment described herein. In all drawings, equivalent elements are given the same reference numerals, and redundant explanations will be omitted. In the following description, unless otherwise specified, terms indicating directions and orientations such as front, rear, left, right, up, down, etc. refer to directions and orientations relative to the vehicle. Note that in the embodiments described below, the front, rear, left, right, and up, down directions of the vehicle and the seat body are the same. In each drawing, the arrow FR points forward, the arrow UP points upward, and the arrow LH points leftward.

[0021] FIG. 1 is a perspective view showing the bucket seat 10 in the lowest position. FIG. 2 is a perspective view showing the bucket seat 10 in the highest position. Note that the upper part of the seat back of the seat body 12 is omitted in FIGS. 1 and 2 and FIG. 4 described below. The bucket seat 10 is installed in an automobile as a vehicle. The bucket seat 10 as a vehicle seat shown in FIG. 1 is a full bucket seat, for example, a driver's seat. A side door (not shown) of the vehicle is provided on the right side of the bucket seat 10, and a center console (not shown) is provided on the left side of the bucket seat 10.

[0022] The bucket seat 10 includes a seat body 12 and two side member groups 18 provided on the outer sides of the seat body 12 on both the left and right sides. In Figures 1, 2, and 4, the approximate position of the right side member group 18 is indicated by a dashed line, and the actual part of the right side member group 18 is not shown. The right side member group 18 has a symmetrical shape and structure to the left side member group 18, except for the inner buckle 19. The right side member group 18 does not have an inner buckle.

[0023] The seat body 12 is a seat in which the seat cushion and seat back are integrally formed. The seat body 12 is a seat in which both sides of the seat cushion and both sides of the seat back are set higher than the center, thereby enveloping the thighs, waist, torso, etc. of the occupant and enhancing the function of immobilizing the occupant's body. The upper ends of the sides of the seat cushion of the seat body 12 are folded outward to form side edges 14 with an inverted U-shaped cross section.

[0024] 1, the side member group 18 includes a side bracket 20, an inner buckle 19 of the seat belt, a movable rail 28, and a fixed rail 26. The movable rail 28 and the fixed rail 26 form a seat rail.

[0025] The side bracket 20 includes an upper bracket 40 and a lower bracket 30. The upper bracket 40 is fastened to the outer surface 13 of the seat body 12 and is also fastened to the lower bracket 30. The lower bracket 30 is fastened to an upper portion of a movable rail 28. The movable rail 28 is configured to be slidable in the front-to-rear direction relative to the fixed rail 26. The fixed rail 26 is fastened to the vehicle floor (not shown).

[0026] The movable rail 28 is held in a locked state in which sliding movement of the movable rail 28 relative to the fixed rail 26 is restricted by a locking mechanism (not shown) provided between the movable rail 28 and the fixed rail 26. The movable rail 28 is allowed to slide when the locked state of the locking mechanism is released by operating an operating lever (not shown). Note that well-known technology can be used for the seat rail.

[0027] Furthermore, in this embodiment, the lower bracket 30 is fastened indirectly to the vehicle floor via the seat rail, but the lower bracket 30 may also be fastened directly to the vehicle floor.

[0028] 2, the inner buckle 19 of the seat belt is fixed to the rear part of the upper bracket 40. The inner buckle 19 is fastened to the upper bracket 40 using, for example, a fastening bolt and a nut.

[0029] The lower bracket 30 and the upper bracket 40 are fastened together by a front fastening portion 50 and a rear fastening portion 60 that are spaced apart in the front-to-back direction of the seat main body 12. The front fastening portion 50 and the rear fastening portion 60 each include adjustment portions 52, 62 that enable the position of the upper bracket 40 relative to the lower bracket 30 in the front-to-back and up-to-down directions to be changed and the brackets 40 and 40 fastened together.

[0030] 3A is a perspective view of the lower bracket 30 and the upper bracket 40. The lower bracket 30 and the upper bracket 40 are each a metal member formed by, for example, bending or drilling a metal plate.

[0031] The lower bracket 30 includes a side plate 32 and a bottom plate 31 bent at a right angle to the side plate 32. As shown in Fig. 1, the bottom plate 31 of the lower bracket 30 is fastened to the upper part of the movable rail 28. As shown in Fig. 3(A), the side plate 32 of the lower bracket 30 includes a plurality of bolt insertion holes 34 formed in the front upper part and a plurality of bolt insertion holes 36 formed in the rear upper part.

[0032] The multiple bolt insertion holes 34 are arranged diagonally in the front-rear and top-bottom directions, and a fastening bolt 54 (see FIG. 1) is selectively inserted into one of them. This fastening bolt 54 is inserted into a bolt insertion hole 44 (see FIG. 3(A)) in the upper bracket 40 and screwed into a nut provided on the back side of the upper bracket 40. This fastens the lower bracket 30 and the front portion of the upper bracket 40 together. The front fastening portion 50 (see FIG. 1) is composed of the multiple bolt insertion holes 34 in the lower bracket 30 and the bolt insertion hole 44 (see FIG. 3(A)) in the upper bracket 40. The multiple bolt insertion holes 34 in the lower bracket 30 form an adjustment portion 52 for adjusting the lifter at the front of the seat main body 12.

[0033] In the lifter adjustment, a selected one of the plurality of bolt insertion holes 34 in the lower bracket 30 is aligned in advance with the bolt insertion hole 44 in the upper bracket 40. Then, the fastening bolt 54 is inserted through the selected bolt insertion hole 34 and the bolt insertion hole 44 and screwed into the nut.

[0034] As shown in FIG. 3(A), the lower bracket 30 has a plurality of bolt insertion holes 36 arranged diagonally in the front-to-rear and top-to-bottom directions, and a fastening bolt 64 (see FIG. 1) is selectively inserted into one of the bolt insertion holes 36. The fastening bolt 64 is inserted into one of the bolt insertion holes 46 (see FIG. 3(A)) of the upper bracket 40 and threadedly engaged with a nut provided on the back side of the upper bracket 40. This fastens the lower bracket 30 and the rear of the upper bracket 40 together. The rear fastening portion 60 (see FIG. 1) is configured to include the plurality of bolt insertion holes 36 of the lower bracket 30 and the plurality of bolt insertion holes 46 of the upper bracket 40. The plurality of bolt insertion holes 36 of the lower bracket 30 and the plurality of bolt insertion holes 46 of the upper bracket 40 form an adjustment portion 62 for adjusting the lifter at the rear of the seat main body 12.

[0035] In the lifter adjustment, a selected one of the plurality of bolt insertion holes 36 in the lower bracket 30 is aligned in advance with a selected one of the plurality of bolt insertion holes 46 in the upper bracket 40. Then, the fastening bolt 64 is inserted through the selected bolt insertion hole 36 and the selected bolt insertion hole 46 and screwed into the nut.

[0036] 3(A), the upper bracket 40 includes a side plate 42. The side plate 42 of the upper bracket 40 includes a bolt insertion hole 44 formed in a front lower portion, a plurality of bolt insertion holes 46 formed in a rear lower portion, a plurality of bolt insertion holes 48 formed in a front upper portion, and a bolt insertion hole 49 formed in a rear upper portion.

[0037] The multiple bolt insertion holes 48 are arranged in a line in the vertical direction, and a fastening bolt 74 (see FIG. 1) is selectively inserted into one of them. This fastening bolt 74 is threaded into a female thread provided in the front part of the outer surface 13 of the seat main body 12, thereby fastening the upper bracket 40 to the front part of the seat main body 12. The multiple bolt insertion holes 48 form an adjustment section 72 for adjusting the torso angle (backrest tilt angle) of the seat main body 12, with the rear part of the seat main body 12 (fastening bolt 78) as the central axis.

[0038] In torso angle adjustment, a selected bolt insertion hole 48 from among the multiple bolt insertion holes 48 is aligned in advance with the female thread of the seat main body 12. Then, a fastening bolt 74 is inserted into the selected bolt insertion hole 48 and screwed into the female thread of the seat main body 12.

[0039] A fastening bolt 78 (see FIG. 1) is inserted into the bolt insertion hole 49 (see FIG. 3(A)) at the rear upper part of the upper bracket 40. This fastening bolt 78 is threaded into a female thread provided at the rear part of the outer surface 13 of the seat main body 12. This fastens the upper bracket 40 and the rear part of the seat main body 12 together. The fastening bolt 78 also functions as a central axis for adjusting the torso angle of the seat main body 12.

[0040] The bucket seat 10 of this embodiment can adjust the torso angle in four stages. Figures 1 and 2 show the seat main body 12 at a first torso angle, where the fastening bolt 74 is inserted into the lowest bolt insertion hole 48. Figure 4 shows a fourth torso angle, where the fastening bolt 74 is inserted into the highest bolt insertion hole 48. Although not shown, when the fastening bolt 74 is inserted into the second bolt insertion hole 48 from the bottom, the seat main body 12 is at a second torso angle. When the fastening bolt 74 is inserted into the third bolt insertion hole 48 from the bottom, the seat main body 12 is at a third torso angle. Note that when adjusting the torso angle, the fastening bolts 74 are inserted into bolt insertion holes 48 at the same height on the left and right side brackets 20 (the right side bracket 20 is not shown).

[0041] The bucket seat 10 of this embodiment also allows for five-stage lifter adjustment. FIG. 1 shows the side bracket 20 in the first lifter position (lowest position). FIG. 3(B) shows the side bracket 20 in the second lifter position. FIG. 3(C) shows the side bracket 20 in the third lifter position. FIG. 3(D) shows the side bracket 20 in the fourth lifter position. FIG. 2 shows the side bracket 20 in the fifth lifter position (highest position).

[0042] In the first lifter position (lowest position), as shown in FIG. 1, the lowest bolt insertion hole 34 at the front of the lower bracket 30, the lowest bolt insertion hole 36 at the rear of the lower bracket 30, and the highest bolt insertion hole 46 at the rear of the upper bracket 40 are used.

[0043] In the second lifter position, as shown in Figure 3(B), the second-lowest bolt insertion hole 34 in the front of the lower bracket 30, the second-lowest bolt insertion hole 36 in the rear of the lower bracket 30, and the topmost bolt insertion hole 46 in the rear of the upper bracket 40 are used.

[0044] In the third lifter position, as shown in Figure 3(C), the third bolt insertion hole 34 from the bottom at the front of the lower bracket 30, the topmost bolt insertion hole 36 at the rear of the lower bracket 30, and the topmost bolt insertion hole 46 at the rear of the upper bracket 40 are used.

[0045] In the fourth lifter position, as shown in Figure 3(D), the fourth bolt insertion hole 34 from the bottom at the front of the lower bracket 30, the topmost bolt insertion hole 36 at the rear of the lower bracket 30, and the second bolt insertion hole 46 from the bottom at the rear of the upper bracket 40 are used.

[0046] In the fifth lifter position, as shown in FIG. 2, the topmost bolt hole 34 at the front of the lower bracket 30, the topmost bolt hole 36 at the rear of the lower bracket 30, and the bottommost bolt hole 46 at the rear of the upper bracket 40 are used.

[0047] When adjusting the lifter, the fastening bolts 54, 64 are inserted into the bolt insertion holes at the same height for the bolt insertion holes 34, 36, 46 in the left and right side brackets 20 (the right side bracket 20 is not shown), respectively.

[0048] Next, the effects of the bucket seat 10 of the embodiment described above will be described.

[0049] According to the embodiment described above, the side bracket 20 is composed of two components, the lower bracket 30 and the upper bracket 40. Therefore, the lifter adjustment of the seat main body 12 can be achieved by changing the position of the upper bracket 40 with respect to the lower bracket 30, without changing the relative positions of the seat main body 12 and the upper bracket 40. To expand the range of lifter adjustment, it is not necessary to provide upwardly projecting extensions 181 and 182 as in the conventional art shown in FIG. 6(B). Adjustment sections 52 and 62 corresponding to the desired lifter adjustment range can be provided to the fastening sections (front fastening section 50 and rear fastening section 60) of the lower bracket 30 and the upper bracket 40, thereby expanding the lifter adjustment range.

[0050] FIG. 5 is a diagram schematically illustrating the lifter adjustment range 90 of the bucket seat 10 of the embodiment described above and the lifter adjustment range 190 of a conventional bucket seat 110 (see FIG. 6(A)). The lifter adjustment range 190 (FIG. 5) of the conventional bucket seat 110 (FIG. 6(A)) is limited to a narrow range in the vertical direction. On the other hand, the lifter adjustment range 90 of the bucket seat 10 of the embodiment described above is expanded to a wide range in the front-to-rear and vertical directions. Therefore, the seat main body 12 can be sufficiently adjusted within the lifter adjustment range 90, and the seat main body 12 can be set to an ideal driving position.

[0051] Furthermore, according to the embodiment described above, the inner buckle 19 of the seat belt is fastened to the upper bracket 40, so the relative position of the inner buckle 19 with respect to the seat main body 12 can be maintained before and after the lifter adjustment of the seat main body 12. In the conventional bucket seat 110 (see FIG. 6(A)), the inner buckle 119 is fastened to the side bracket 120 (one component), so the relative position of the inner buckle 119 with respect to the seat main body 112 changes before and after the lifter adjustment. This requires the time and effort of adjusting the position of the inner buckle 119 along with the lifter adjustment. However, according to the embodiment described above, the relative position of the inner buckle 19 with respect to the seat main body 12 does not depend on the lifter adjustment, so the position adjustment of the inner buckle 19 that accompanies the lifter adjustment can be omitted.

[0052] Although the bucket seat 10 of the embodiment described above is configured so that the lifter can be adjusted in the front-to-rear and up-down directions, the bucket seat may be configured so that the lifter can be adjusted only in the up-down direction. In this case, the multiple bolt insertion holes 34, 36 of the lower bracket 30 and the multiple bolt insertion holes 46 of the upper bracket 40 will be aligned in the up-down direction. Even in this case, because the side bracket 20 is made up of two components, the lower bracket 30 and the upper bracket 40, the range of lifter adjustment in the up-down direction can be expanded compared to the prior art.

[0053] In the embodiments described above, the adjustment portions 52 of the front fastening portion 50 were the multiple bolt insertion holes 34 provided in the lower bracket 30, through which the fastening bolts 54 are selectively inserted depending on the front-to-back, up-down, or up-down position of the upper bracket 40 relative to the lower bracket 30. Also, the adjustment portions 62 of the rear fastening portion 60 were the multiple bolt insertion holes 36, 46 provided in each of the lower bracket 30 and the upper bracket 40, through which the fastening bolts 64 are selectively inserted depending on the front-to-back, up-down, or up-down position of the upper bracket 40 relative to the lower bracket 30.

[0054] However, the adjustment portions 52, 62 may have other forms. The adjustment portions 52, 62 may be a plurality of bolt insertion holes provided in at least one of the lower bracket 30 and the upper bracket 40, through which the fastening bolts 54, 64 are selectively inserted depending on the position of the upper bracket 40 relative to the lower bracket 30.

[0055] For example, one bolt insertion hole 34 or multiple bolt insertion holes 34 serving as adjustment portion 52 may be provided in the front portion of the lower bracket 30, and multiple bolt insertion holes 44 serving as adjustment portion 52 may be provided in the front lower portion of the upper bracket 40. Alternatively, for example, one bolt insertion hole 36 may be provided in the rear portion of the lower bracket 30, and multiple bolt insertion holes 46 serving as adjustment portion 62 may be provided in the rear lower portion of the upper bracket 40. Alternatively, for example, multiple bolt insertion holes 36 serving as adjustment portion 62 may be provided in the rear portion of the lower bracket 30, and one bolt insertion hole 46 may be provided in the rear lower portion of the upper bracket 40.

[0056] The multiple bolt insertion holes of the adjustment parts 52, 62 may be replaced with elongated holes. These elongated holes are formed by removing the portions between the multiple bolt insertion holes to form a single hole. The fastening bolts 54, 64 may be inserted into the bolt insertion holes or elongated holes together with washers. [Explanation of symbols]

[0057] 10 bucket seat (vehicle seat), 12 seat body, 13 outer surface, 14 side edge, 18 side member group, 19 buckle (inner buckle), 20 side bracket, 26 fixed rail, 28 movable rail, 30 lower bracket, 31 bottom plate, 32 side plate, 34, 36 bolt insertion hole, 40 upper bracket, 42 side plate, 44, 46, 48, 49 bolt insertion hole, 50 front fastening portion, 52 adjustment portion, 54 fastening bolt, 60 rear fastening portion, 62 adjustment portion, 64 fastening bolt, 72 adjustment portion, 74 fastening bolt, 78 fastening bolt, 90 lifter adjustment range, 110 bucket seat, 112 seat body, 113 side, 114 side edge, 119 inner buckle, 120 side bracket, 154 fastening bolt, 156 Slot, 164 Fastening bolt, 166 Bolt insertion hole, 181,182 Extension, 190 Lifter adjustment range.

Claims

1. A vehicle seat, The seat body, a side bracket provided on the outer side of the seat body, The side brackets include an upper bracket and a lower bracket, the upper bracket is fastened to an outer surface of the seat body and to the lower bracket, The lower bracket is directly or indirectly fastened to a vehicle floor, The lower bracket and the upper bracket are fastened to each other by a front fastening portion and a rear fastening portion that are spaced apart in the front-rear direction of the seat body, The front fastening portion and the rear fastening portion each include an adjustment portion that enables the upper bracket and the lower bracket to be fastened to each other by changing a position of the upper bracket relative to the lower bracket in a vertical direction or a front-to-back vertical direction. Vehicle seat.

2. 2. The vehicle seat according to claim 1, A seat belt buckle is fastened to the upper bracket of the side bracket. Vehicle seat.

3. 3. The vehicle seat according to claim 1 or 2, The adjustment portion of the front fastening portion and the adjustment portion of the rear fastening portion are each a plurality of bolt insertion holes, each of which is provided in at least one of the lower bracket and the upper bracket, and through which a fastening bolt is selectively inserted depending on the position of the upper bracket relative to the lower bracket; Vehicle seat.

4. 3. The vehicle seat according to claim 1 or 2, the adjustment portion of the front fastening portion includes a plurality of bolt insertion holes provided in the lower bracket, through which fastening bolts are selectively inserted depending on the position of the upper bracket relative to the lower bracket in the front-rear and up-down directions, the adjustment portion of the rear fastening portion includes a plurality of bolt insertion holes provided in each of the lower bracket and the upper bracket, through which fastening bolts are selectively inserted depending on the position of the upper bracket relative to the lower bracket in the front-rear and up-down directions, Vehicle seat.

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