JP6242585B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a lower rail and an upper rail that is slidable relative to the lower rail.

  Conventionally, some vehicle seats are provided with a slider mechanism so that the seat can move back and forth with respect to the vehicle floor. For example, in the vehicle seat described in Patent Document 1, the slider mechanism includes left and right lower rails that are fixed to the floor of the vehicle, and left and right upper rails that are slidable with respect to the lower rail. Have. Of the cushion frame constituting the seating portion, the left and right side frames are connected to the upper rail. Thereby, the cushion frame is slidable integrally with the upper rail.

JP 2012-136087 A

  However, in the above-described technology, since the upper rail and the side frame are separate parts, the number of parts constituting the vehicle seat has increased.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat that can reduce the number of parts in a vehicle seat in which a cushion frame is slidable with respect to the vehicle floor.

  And an object of this invention is to provide the vehicle seat which can suppress a deformation | transformation of the upper rail which comprises a side frame.

  Another object of the present invention is to provide a vehicle seat in which a side frame can stably support an occupant.

  An object of the present invention is to provide a vehicle seat in which a side frame can stably support a pan frame connecting the left and right side frames.

  In order to achieve the above-described object, a vehicle seat according to the present invention includes a left and right lower rail that extends in the front-rear direction and is fixed to a vehicle floor, a left and right lower rail that engages with the lower rail and is slidable relative to the lower rail. A vehicle seat comprising an upper rail and a cushion frame configured to be slidable integrally with the upper rail, wherein the upper rail is provided at a main body portion and a lower end of the main body portion, An engaging portion engageable with the lower rail, and further comprising a connecting member for connecting the left and right main body portions, wherein the upper portion of the main body portion constitutes a side frame of the cushion frame. And

  According to such a configuration, since the upper rail and the side frame are configured by one component, the number of components of the vehicle seat can be reduced. Moreover, since the process of assembling the upper rail and the side frame is not necessary, the workability during the assembly is improved.

  In the vehicle seat described above, the main body portion is made of a single plate-like member, and has an outer wall and an inner wall that is disposed on the inner side in the left-right direction of the outer wall and whose upper end is continuous with the upper end of the outer wall. It is desirable.

  According to this, for example, compared with the case where the main body portion of the upper rail is formed in a plate shape, the main body portion is not easily deformed. And a deformation | transformation of a side frame can be suppressed by comprising a side frame in the upper part of this main-body part.

  In the vehicle seat in which the main body portion has an outer wall and an inner wall, the main body portion has a first portion in which the outer wall and the inner wall extend substantially in parallel, and a gap between the outer wall and the inner wall is wider than the first portion. It is desirable to have a second part.

  According to this, the rigidity of the main body can be increased and the deformation of the main body can be further suppressed by providing the main body with the bent portion so as to protrude outward in the left-right direction.

  It is desirable that the second portion described above is provided at the upper end portion of the main body portion.

  According to this, since the part to which a passenger | crew's load applies among the side frames is wide, a passenger | crew can be supported stably.

  In the vehicle seat in which the main body portion includes the first portion and the second portion, the connecting member includes a pan frame made of a plate-like member, and the pan frame is placed on an upper surface of the second portion. It is desirable that

  According to this, since the part which supports a pan frame among the side frames is wide, a pan frame can be supported stably.

  The vehicle seat in which the main body portion includes the first portion and the second portion further includes a cushion pad and an elastic member that spans the left and right side frames and supports the cushion pad from below. It is preferable that the second portion is provided with a locking portion for locking the elastic member.

  According to this, an elastic member can be latched to a part with high rigidity among side frames, and the rigidity as the whole seat frame can be made high.

  In the above vehicle seat, the inner wall has a first hole, the outer wall has a second hole, and the first hole and the second hole are provided at overlapping positions when viewed from the left-right direction. It is desirable that

  According to this, when parts are inserted through the first hole and the second hole, the operation is easy. Moreover, weight reduction of a main-body part can be aimed at by providing a some hole (1st hole and 2nd hole) in a main-body part.

  In the vehicle seat described above, the inner wall has a first hole, the outer wall has a second hole, and the first hole and the second hole are provided at different positions when viewed from the left-right direction. It may be done.

  According to this, it can reduce that a main-body part becomes easy to deform | transform by providing a 1st hole and a 2nd hole in a main-body part by arrange | positioning 1st hole and 2nd hole. Moreover, weight reduction of a main-body part can be aimed at by providing a some hole (1st hole and 2nd hole) in a main-body part.

  In the vehicle seat described above, it is desirable that the outer wall and the inner wall are fixed to each other.

  According to this, compared with the case where the outer wall and the inner wall are not fixed, the rigidity of the main body can be further increased, and the deformation of the main body can be further suppressed.

  In the vehicle seat described above, it is preferable that the side frame is provided with a fixing portion for fixing the seat belt on an outer surface in the left-right direction.

  As described above, even when the belt is pulled by the seat belt, according to the configuration described above, it is possible to suppress deformation of the main body portion and the side frame of the upper rail.

According to the present invention , since the upper rail and the side frame are composed of one part, the number of parts of the vehicle seat can be reduced. Moreover, since the process of assembling the upper rail and the side frame is not necessary, the workability during the assembly is improved.

According to this invention , compared with the case where the main-body part of an upper rail is formed in plate shape, a main-body part is hard to deform | transform. And a deformation | transformation of a side frame can be suppressed by comprising a side frame in the upper part of this main-body part.

According to the present invention , by providing the main body portion with a bent portion so as to protrude outward in the left-right direction, the rigidity of the main body portion can be increased and deformation of the main body portion can be further suppressed.

According to this invention , since the part to which a passenger | crew's load applies among the side frames is wide, a passenger | crew can be supported stably.

According to this invention , since the part which supports a pan frame among the side frames is wide, a pan frame can be supported stably.

According to the present invention , it is possible to increase the rigidity of the seat frame as a whole by engaging the elastic member with a portion of the side frame having high rigidity.

According to the present invention , it is easy to work when parts are inserted through the first hole and the second hole. Moreover, weight reduction of a main-body part can be aimed at by providing a some hole (1st hole and 2nd hole) in a main-body part.

According to the present invention , by disposing the first hole and the second hole in a shifted manner, it is possible to reduce the tendency of the main body to be easily deformed by providing the first hole and the second hole in the main body. . Moreover, weight reduction of a main-body part can be aimed at by providing a some hole (1st hole and 2nd hole) in a main-body part.

According to the present invention , the rigidity of the main body can be further increased and the deformation of the main body can be further suppressed as compared with the case where the outer wall and the inner wall are not fixed.

According to the present invention, even when pulled by the seat belt, it is possible to suppress the deformation of the main portion and the side frame of A Ppareru.

It is a perspective view which shows the seat frame and slider mechanism of the vehicle seat which concern on one Embodiment of this invention. It is sectional drawing which shows the left lower rail and upper rail. It is an enlarged view near the engaging part of the left upper rail. It is a disassembled perspective view which shows the left slider mechanism. It is sectional drawing which shows the left lower rail and upper rail in a 1st modification. It is sectional drawing which shows the left lower rail and upper rail in a 2nd modification. It is sectional drawing which shows the left lower rail and upper rail in a 3rd modification.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the present invention, front and rear, left and right, and top and bottom are based on a person sitting on a vehicle seat. Further, the inner side and the outer side in the left-right direction are based on one vehicle seat.

  A vehicle seat as an example of a vehicle seat of the present invention includes a slider mechanism SL fixed to the floor of a vehicle body as an example of a vehicle as shown in FIG. 1, and a seat frame F disposed on the slider mechanism SL. And a seat cushion made of urethane foam or the like is placed on the outside of the seat frame F. A seat belt SB is attached to the vehicle seat.

  The slider mechanism SL mainly includes a pair of left and right lower rails 100 and a pair of left and right upper rails 200. The lower rail 100 extends in the front-rear direction and is fixed to the floor of the vehicle body by a bracket (not shown). The upper rail 200 is configured to engage with the lower rail 100 and be slidable back and forth with respect to the lower rail 100. The detailed configurations of the lower rail 100 and the upper rail 200 will be described later.

  The seat frame F includes a cushion frame F1 and a seat back frame F2 that constitute a seating portion.

  The cushion frame F1 is a frame formed in a substantially rectangular frame shape. In the cushion frame F1, the left and right side frames 20 are formed from the upper part of the upper rail 200, and are formed integrally with the upper rail 200. Accordingly, the cushion frame F1 is configured to be slidable back and forth with respect to the lower rail 100 integrally with the upper rail 200. A support plate 21 that supports the seat back frame F2 is fixed to the rear portion of each side frame 20.

  The cushion frame F1 includes a pan frame 30 as an example of a connecting member that connects the front ends of the side frames 20 (upper rails 200), and a cylindrical connecting pipe 40 that connects the rear ends of the side frames 20. And have. The cushion frame F <b> 1 has an S spring 50 as an example of an elastic member that spans the side frame 20.

  The pan frame 30 is made of sheet metal as an example of a plate-like member, and left and right end portions are placed on the upper surfaces of the left and right upper rails 200 and fixed to the upper rails 200 by welding or the like.

  The S spring 50 is a spring extending in the left-right direction, and is formed to be bent a plurality of times in the front-rear direction. A plurality of S springs 50 are provided side by side in the front-rear direction, and the left and right ends thereof are locked to the side frame 20. The S spring 50 supports the cushion pad C placed on the cushion frame F1 from below.

  The seat back frame F2 is a frame formed in a substantially rectangular frame shape, and is rotatably connected to the rear portion of the cushion frame F1 via a known reclining mechanism RL. Thereby, the seat back frame F2 can be tilted back and forth with respect to the cushion frame F1.

  Next, a detailed configuration of the slider mechanism SL will be described. Since the right lower rail 100 and the upper rail 200 and the left lower rail 100 and the upper rail 200 are formed symmetrically, only the left lower rail 100 and the upper rail 200 are illustrated in FIGS. 2 and 4. The right lower rail 100 and the upper rail 200 are not shown.

  The slider mechanism SL includes left and right lower rails 100, left and right upper rails 200, and rolling elements 60 provided between the lower rails 100 and the upper rails 200 as shown in FIG.

  The lower rail 100 is formed by bending a sheet metal. The lower rail 100 includes a base portion 110 that extends in the left-right direction under the upper rail 200, an outer guide portion 120 that extends from the end of the base portion 110 in the left-right direction (left side for the left lower rail 100), and a base portion. 110 and an inner guide portion 130 extending from an end on the inner side in the left-right direction (the right side for the left lower rail 100).

  The outer guide portion 120 is formed in a substantially U shape that is convex upward so as to surround an outer engagement portion 220 of the upper rail 200 described later. The outer guide part 120 includes a first outer wall part 121 extending upward from an end on the outer side in the left-right direction of the base part 110, and a second outer wall part 122 disposed on the inner side in the left-right direction of the first outer wall part 121. And an outer connecting portion 123 that connects the upper end of the first outer wall portion 121 and the upper end of the second outer wall portion 122.

  The inner side guide part 130 is formed in the substantially U shape which protrudes upwards so that the inner side engaging part 230 of the upper rail 200 mentioned later may be enclosed. The inner guide portion 130 includes a first inner wall portion 131 that extends upward from an end portion on the inner side in the left-right direction of the base portion 110, and a second inner wall portion 132 that is disposed on the outer side in the left-right direction of the first inner wall portion 131. And an inner connecting portion 133 that connects the upper end of the first inner wall portion 131 and the upper end of the second inner wall portion 132.

  The upper rail 200 includes a main body part 210 extending in the front-rear direction, an outer engagement part 220 extending from the lower end of the main body part 210 in the left-right direction, and an inner engagement extending from the lower end of the main body part 210 in the left-right direction. Part 230. The main body portion 210, the outer engagement portion 220, and the inner engagement portion 230 are formed by molding a sheet metal as an example of one plate-like member.

  The main body 210 includes an outer wall 211, an inner wall 212 disposed on the inner side in the left-right direction of the outer wall 211, and an upper wall 213 that connects the upper end of the outer wall 211 and the upper end of the inner wall 212. Further, the outer engagement portion 220 continuously extends from the lower end of the outer wall 211, and the inner engagement portion 230 continuously extends from the lower end of the inner wall 212.

  In the main body 210, the outer wall 211 and the inner wall 212 are bent, the first portion 210A in which the outer wall 211 and the inner wall 212 extend substantially in parallel, and the second portion in which the distance between the outer wall 211 and the inner wall 212 is wider than the first portion 210A. 210B. The second portion 210 </ b> B is formed at the upper end portion of the main body portion 210.

  Specifically, the outer wall 211 is bent so that the upper end portion protrudes outward in the left-right direction. The outer wall 211 includes a first outer wall 211A extending in the up-down direction, a second outer wall 211B extending from the upper end of the first outer wall 211A in the left-right direction and upward, and a second outer wall 211B extending from the upper end of the second outer wall 211B in the left-right direction and upward. 3 outer walls 211C. The upper end of the third outer wall 211C is connected to the upper wall 213.

  The inner wall 212 is bent so that the upper end portion protrudes inward in the left-right direction. A first inner wall 212A extending in the vertical direction substantially parallel to the first outer wall 211A, a second inner wall 212B extending inward and laterally from the upper end of the first inner wall 212A, and laterally outward from the upper end of the second inner wall 212B A third inner wall 212C extending upward. The upper end of the third inner wall 212C is connected to the upper wall 213.

  Further, the upper end of the third outer wall 211C is located on the outer side in the left-right direction with respect to the first outer wall 211A, and the upper end of the third inner wall 212C is located on the inner side in the left-right direction with respect to the first inner wall 212A. Thereby, the width of the upper wall 213 is wider than the interval between the first outer wall 211A and the first inner wall 212A.

  The first outer wall 211A and the first inner wall 212A constitute the first portion 210A of the main body 210, the second outer wall 211B and the third outer wall 211C, the second inner wall 212B and the third inner wall 212C, and the upper wall 213. Thus, the second portion 210B of the main body 210 is formed.

  The outer engaging portion 220 is bent so that the tip is directed upward. The outer engaging portion 220 extends further outward in the left-right direction and further upward from the first outer extending portion 221 extending outward in the left-right direction from the lower end of the outer wall 211 and the outer end in the left-right direction of the first outer extending portion 221. A second outer extension 222 extending in the direction of the head, a third outer extension 223 extending upward from the upper end of the second outer extension 222, and an inner side in the left-right direction from the upper end of the third outer extension 223. And a fourth outer extension 224 extending upward.

  The inner engagement portion 230 is bent so that the tip is directed upward. The inner engagement portion 230 extends further inward in the left-right direction and further upward from the first inner extension portion 231 extending inward in the left-right direction from the lower end of the inner wall 212 and the inner end portion in the left-right direction of the first inner extension portion 231. A second inner extension 232 extending in the direction of the head, a third inner extension 233 extending upward from the upper end of the second inner extension 232, and an outer side in the left-right direction from the upper end of the third inner extension 233. And a fourth inner extending portion 234 extending upward.

  The upper rail 200 is assembled to the lower rail 100 such that the outer engagement portion 220 engages with the outer guide portion 120 and the inner engagement portion 230 engages with the inner guide portion 130.

  Specifically, the first outer wall portion 121 is disposed on the outer side of the outer engaging portion 220 in the left-right direction, and covers the outer engaging portion 220 from the outer side in the left-right direction. The second outer wall portion 122 is disposed between the distal end of the outer engaging portion 220 and the main body portion 210. And the 1st inner wall part 131 is arrange | positioned in the left-right direction inner side of the inner side engaging part 230, and has covered the inner side engaging part 230 from the left-right direction inner side. Further, the second inner wall portion 132 is disposed between the front end of the inner engagement portion 230 and the main body portion 210.

  The main body 210 of the upper rail 200 is provided with a fixing portion 201 for fixing the seat belt SB. Further, as shown in FIG. 1, the upper rail 200 is provided with a locking portion 202 for locking the S spring 50. A support plate 21 is attached to the rear portion of the upper rail 200.

  The fixing part 201 is provided at the rear part of the upper rail 200. As shown in FIG. 2, the fixing part 201 includes a first hole 201A provided in the first inner wall 212A and a second hole 201B provided in the first outer wall 211A. The first hole 201A and the second hole 201B are provided at overlapping positions when viewed from the left-right direction. As a result, the bolt B inserted into the seat belt anchor SB1 of the seat belt SB can be inserted into the first hole 201A and the second hole 201B, and the seat belt anchor SB1 is an outer surface in the left-right direction of the upper rail 200. It is supposed to be fixed to.

  As shown in FIG. 3, the locking portion 202 is provided in the second portion 210 </ b> B of the main body portion 210. The locking portion 202 is formed by cutting and raising a portion of the second portion 210B in the left-right direction, that is, a part of the third inner wall 212C, and the end of the S spring 50 is formed in the hole formed by cutting and raising. It is inserted.

  As shown in FIG. 4, the support plate 21 is made of sheet metal, for example, and is formed in a substantially L shape in a side view. The support plate 21 is provided with an attachment portion 21A to which the connection pipe 40 and the reclining mechanism RL are attached. The support plate 21 is sandwiched between the outer wall 211 and the inner wall 212 of the main body 210 and is fixed to the upper rail 200 by welding or the like. The support plate 21 is formed with holes larger than the first holes 201A and the second holes 201B at positions corresponding to the fixing portions 201. In addition, in order to make a figure legible, the support plate 21 is abbreviate | omitted in FIG.

  The rolling elements 60 are provided at two locations separated from each other in the front-rear direction with respect to each of the outer engagement portion 220 and the inner engagement portion 230. Each rolling element 60 has a first ball 61 and two second balls 62. The first ball 61 and the second ball 62 are held by the retainer 70 at a distance from each other. In addition, in order to make a figure legible, the retainer 70 is abbreviate | omitted in FIG.

  As shown in FIG. 2, the first ball 61 is disposed below the outer guide part 120 and the inner guide part 130. The first ball 61 on the outer guide part 120 side is sandwiched between the base part 110 of the lower rail 100, the corner of the first outer wall part 121, and the second outer extension part 222 of the upper rail 200, and rolls between them. It is like that. The first ball 61 on the inner guide part 130 side is sandwiched between the base part 110 of the lower rail 100, the corner of the first inner wall part 131, and the second inner extension part 232 of the upper rail 200, and rolls between them. It is like that.

  The second ball 62 is a ball smaller than the first ball 61. The two second balls 62 are spaced apart from each other on the first ball 61. The second ball 62 on the outer guide part 120 side is sandwiched between the first outer wall part 121 of the lower rail 100 and the corners of the outer connecting part 123 and the fourth outer extension part 224 of the upper rail 200, It is supposed to roll. The second ball 62 on the side of the inner guide portion 130 is sandwiched between the first inner wall portion 131 of the lower rail 100 and the corner of the inner connecting portion 133 and the fourth inner extension portion 234 of the upper rail 200. It is supposed to roll.

The operation and effect of the vehicle seat configured as described above will be described.
By configuring the side frame 20 at the upper portion of the main body 210 of the upper rail 200, the upper rail 200 and the side frame 20 are configured by one component, so that the number of components of the vehicle seat can be reduced. And since the shift | offset | difference at the time of an assembly does not arise, the precision as components becomes high. In addition, when manufacturing the vehicle seat, there is no process of assembling the upper rail 200 and the side frame 20, so that workability during assembly is improved.

  In the vehicle seat attached to the vehicle body, when an unillustrated lever provided on the vehicle seat is operated to move the seating portion (cushion frame F1) back and forth, the upper rail 200 slides relative to the lower rail 100. To do.

  When the upper rail 200 slides relative to the lower rail 100, the outer engagement portion 220 of the upper rail 200 moves back and forth between the first outer wall portion 121 and the second outer wall portion 122 of the lower rail 100, The inner engagement portion 230 of the rail 200 moves back and forth between the first inner wall portion 131 and the second inner wall portion 132 of the lower rail 100. At this time, since the rolling elements 60 that roll between the lower rail 100 and the upper rail 200 are provided, the upper rail 200 can slide smoothly with respect to the lower rail 100.

  Since the seat belt SB is fixed to the main body portion 210 of the upper rail 200 on the outer surface in the left-right direction via the seat belt anchor SB1, the upper rail is caused by a load applied to the seat belt SB during a vehicle collision or the like. 200 may be pulled inward in the left-right direction and forward.

  In the present embodiment, the main body portion 210 of the upper rail 200 has an outer wall 211 and an inner wall 212 whose upper end is continuous with the outer wall 211 by the upper wall 213. For example, the main body portion is composed of only one wall. Compared with the case where it comprises, the main-body part 210 is hard to deform | transform. In addition, since the side frame 20 of the cushion frame F1 is configured at the upper part of the main body 210 of the upper rail 200, the side frame 20 is also difficult to deform. Thereby, a deformation | transformation of the upper rail 200 or the side frame 20 when the upper rail 200 is pulled by the seatbelt SB can be suppressed.

  In addition, by bending the outer wall 211 and the inner wall 212 in the main body 210, the outer wall 211 and the inner wall 212 have a first portion 210A in which the outer wall 211 and the inner wall 212 extend substantially in parallel, and the interval between the outer wall 211 and the inner wall 212 is wider than the first portion 210A. Since the second portion 210B is provided, the outer wall 211 and the inner wall 212 are reinforced by the bent portion, and the rigidity of the main body portion 210 is increased as compared with the case where the second portion 210B is not provided. Further, the main body 210 is more difficult to deform.

  And since the 2nd part 210B is provided in the upper end part of the main-body part 210, the width | variety of the upper end part of the main-body part 210, ie, the upper end edge of the side frame 20, is wide. Thus, the occupant can be stably supported by the side frame 20. In addition, the pan frame 30 to which the side frame 20 is fixed can be stably supported. Furthermore, since the edge of the side frame 20 does not hit the cushion pad C, the cushion pad C is hardly damaged.

  Further, since the S spring 50 is engaged with the second portion 210B having high rigidity in the main body 210, the rigidity of the seat frame F as a whole can be increased.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention.

  In the following description, components that are substantially the same as those in the above-described embodiment are given the same reference numerals, and descriptions thereof are omitted. Also in the following modifications, as in the above-described embodiment, the right lower rail 100 and the upper rail 200 and the left lower rail 100 and the upper rail 200 are formed symmetrically. 6, only the left lower rail 100 and the upper rail 200 are illustrated, and the right lower rail 100 and the upper rail 200 are not illustrated.

  In the embodiment described above, the outer wall 211 and the inner wall 212 of the upper rail 200 are spaced apart from each other, but the present invention is not limited to this. For example, as shown in FIG. 5, the outer wall 211 and the inner wall 212 are in contact with each other at the first portion 210 </ b> A, and may be fixed by spot welding or the like as shown in the welded portion W.

  According to this, compared with the case where the outer wall 211 and the inner wall 212 are not fixed, the rigidity of the main body 210 is improved, and the deformation of the main body 210 can be suppressed.

  In the embodiment, the outer wall 211 and the inner wall 212 of the upper rail 200 are bent to provide the first portion 210A and the second portion 210B, but the present invention is not limited to this. For example, as shown in FIG. 6, the outer wall 214 and the inner wall 215 constituting the main body 210 extend straight without bending from the upper end to the lower end, and the outer wall 214 and the inner wall 215 are substantially parallel from the upper end to the lower end of the main body 210. It may be. In this case, a deformed portion 216 in which a part of the corners of the outer wall 214 and the upper wall 213 and a part of the corners of the inner wall 215 and the upper wall 213 are recessed may be provided. According to this, the rigidity of the main body 210 can be increased.

  In the embodiment, the first hole 201A and the second hole 201B are provided at the overlapping positions when viewed from the left-right direction. However, the present invention is not limited to this, and as shown in FIG. 201A and the 2nd hole 201B may be provided in a different position seeing from the left-right direction. According to this, by disposing the first hole 201A and the second hole 201B in a shifted manner, it is possible to reduce deformation of the main body part 210 due to the provision of the first hole 201A and the second hole 201B in the main body part 210. it can.

  In this case, the bolt B inserted into the seat belt anchor SB1 may be inserted only into the second hole 201B, and the seat belt anchor SB1 may be fixed to the upper rail 200.

  In the above embodiment, the upper rail 200 is provided with a fixing portion 201 for fixing the seat belt SB via the seat belt anchor SB1, and as an example, the fixing portion 201 of the left upper rail 200 is provided with a seat. Although the configuration in which the seat belt anchor SB1 of the belt SB is fixed is shown, the present invention is not limited to this. For example, a buckle for mooring the tongue of the seat belt SB may be fixed to the fixing portion 201 of the right upper rail 200.

  In the embodiment, the upper rail 200 is formed by molding one sheet metal (plate member), but the present invention is not limited to this. For example, as shown in FIG. 7, the upper rail 300 may be formed by combining two sheet metals.

  Specifically, the upper rail 300 includes an outer wall member 301 and an inner wall member 302 bonded to the inner side of the outer wall member 301 in the left-right direction. The outer wall member 301 and the inner wall member 302 constitute a main body 310 of the upper rail 300.

  Thus, by comprising the upper rail 300 from two sheet metal, a deformation | transformation of the side frame 20 comprised by the upper rail 300 and the upper rail 300 can be suppressed.

  In the above embodiment, the connecting pipe 40 and the seat back frame F2 are attached to the support plate 21 attached to the rear portion of the upper rail 200, but the present invention is not limited to this. For example, the connection pipe 40 and the seat back frame F <b> 2 may be rotatably supported at the rear portion of the upper rail 200. According to this, since the support plate 21 becomes unnecessary, it is possible to further reduce the parts constituting the vehicle seat. Alternatively, the first outer wall 211A may protrude rearward from the other part, and the connecting pipe 40 and the seat back frame F2 may be attached to the protruding part.

20 Side frame 30 Pan frame 50 S spring 100 Lower rail 200 Upper rail 201 Fixed portion 201A First hole 201B Second hole 202 Locking portion 210 Main body portion 210A First portion 210B Second portion 211 Outer wall 212 Inner wall C Cushion pad F1 Cushion frame SB seat belt

Claims (8)

Left and right lower rails extending in the front-rear direction and fixed to the vehicle floor;
Left and right upper rails that engage with the lower rail and are slidable relative to the lower rail;
A cushion frame configured to be slidable integrally with the upper rail, and a vehicle seat,
The upper rail has a main body portion and an engaging portion that is provided at a lower end of the main body portion and can be engaged with the lower rail,
A connecting member that connects the left and right body parts;
The upper part of the main body part constitutes a side frame of the cushion frame,
The main body portion is composed of a single plate-like member, and has an outer wall, an inner wall that is disposed on the inner side in the left-right direction of the outer wall, and an upper end is continuous with the upper end of the outer wall,
The main body has a first portion in which the outer wall and the inner wall extend substantially in parallel, and a second portion in which the interval between the outer wall and the inner wall is wider than the first portion,
The vehicle seat, wherein the second portion is provided at an upper end portion of the main body portion. The connecting member includes a pan frame made of a plate-shaped member,
Wherein the upper surface of the second portion, the vehicle seat according to claim 1, wherein the pan frame rests. Left and right lower rails extending in the front-rear direction and fixed to the vehicle floor;
Left and right upper rails that engage with the lower rail and are slidable relative to the lower rail;
A cushion frame configured to be slidable integrally with the upper rail, and a vehicle seat,
The upper rail has a main body portion and an engaging portion that is provided at a lower end of the main body portion and can be engaged with the lower rail,
A connecting member that connects the left and right body parts;
The upper part of the main body part constitutes a side frame of the cushion frame,
The main body portion is composed of a single plate-like member, and has an outer wall, an inner wall that is disposed on the inner side in the left-right direction of the outer wall, and an upper end is continuous with the upper end of the outer wall,
The main body has a first portion in which the outer wall and the inner wall extend substantially in parallel, and a second portion in which the interval between the outer wall and the inner wall is wider than the first portion,
A cushion pad, and an elastic member that spans the left and right side frames and supports the cushion pad from below;
The vehicle seat according to claim 1, wherein the second portion is provided with a locking portion for locking the elastic member. Left and right lower rails extending in the front-rear direction and fixed to the vehicle floor;
Left and right upper rails that engage with the lower rail and are slidable relative to the lower rail;
A cushion frame configured to be slidable integrally with the upper rail, and a vehicle seat,
The upper rail has a main body portion and an engaging portion that is provided at a lower end of the main body portion and can be engaged with the lower rail,
A connecting member that connects the left and right body parts;
The upper part of the main body part constitutes a side frame of the cushion frame,
The main body portion is composed of a single plate-like member, and has an outer wall, an inner wall that is disposed on the inner side in the left-right direction of the outer wall, and an upper end is continuous with the upper end of the outer wall,
The inner wall has a first hole;
The outer wall has a second hole;
The vehicle seat according to claim 1, wherein the first hole and the second hole are provided at different positions when viewed from the left-right direction. The main body includes a first portion in which the outer wall and the inner wall extend substantially in parallel, and a second portion that is provided at an upper end of the main body and has a wider interval between the outer wall and the inner wall than the first portion. The vehicle seat according to claim 4 , wherein the vehicle seat is provided. A cushion pad, and an elastic member that spans the left and right side frames and supports the cushion pad from below;
The vehicle seat according to any one of claims 1, 2, and 5 , wherein the second portion is provided with a locking portion for locking the elastic member. . A support plate attached to a rear portion of the upper rail, and a seat back frame connected to the support plate via a reclining mechanism,
The support plate is sandwiched between said outer wall and said inner wall, vehicle seat according to any one of claims 1 to 6, characterized in that it is fixed to the upper rail. Left and right lower rails extending in the front-rear direction and fixed to the vehicle floor;
Left and right upper rails that engage with the lower rail and are slidable relative to the lower rail;
A cushion frame configured to be slidable integrally with the upper rail, and a vehicle seat,
The upper rail has a main body portion and an engaging portion that is provided at a lower end of the main body portion and can be engaged with the lower rail,
A connecting member that connects the left and right body parts;
The upper part of the main body part constitutes a side frame of the cushion frame,
The main body portion is composed of a single plate-like member, and has an outer wall, an inner wall that is disposed on the inner side in the left-right direction of the outer wall, and an upper end is continuous with the upper end of the outer wall,
The inner wall has a first hole;
The outer wall has a second hole;
The first hole and the second hole are provided at overlapping positions when viewed from the left-right direction,
The seat belt is fixed to the side frame by a bolt inserted through the first hole and the second hole ,
A support plate attached to a rear portion of the upper rail, and a seat back frame connected to the support plate via a reclining mechanism,
The vehicle seat, wherein the support plate is sandwiched between the outer wall and the inner wall and is fixed to the upper rail.

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