JP7319944B2 - Support member for seat slide device - Google Patents

Description

The present invention relates to a support member for a seat slide device for adjusting the position of a seat mounted on a vehicle.

As a support member for this type of seat slide device, for example, the one described in Japanese Patent Application Laid-Open No. 2002-200001 has been proposed.

The support member (leg bracket) of the seat slide device described in Patent Document 1 fixes and supports the front and rear end portions in the longitudinal direction of the lower rail arranged in the longitudinal direction of the vehicle body to the floor of the vehicle body. An upper flat portion fixed to the front and rear end portions of the lower rail, a slope portion integrally provided on the tip side of the upper flat portion, and an integral portion provided on the tip of the slope portion and fixed to the vehicle body floor via fixing bolts. and a flange portion provided integrally with the upper flat portion, the slope portion, and the outer periphery of the lower flat portion.

A leg cover made of synthetic resin is detachably provided on the upper portion of the lower flat portion. This leg cover allows foreign matter such as a cigarette lighter dropped by an occupant to enter the lower rail, slide from the upper flat portion onto the sloped portion, slide on the upper surface of the leg cover, and discharge the foreign matter to the outside. is smoothly discharged to the outside without remaining on the upper portion of the lower flat portion.

JP 2013-67246 A

However, in the support member of the seat slide device disclosed in Patent Document 1, since the leg cover is provided on the upper portion of the lower flat portion, the total number of parts increases, and the manufacturing and assembly operations become complicated. , there is a risk of increasing manufacturing and assembly costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a support member for a seat slide device that can reduce the number of parts and improve the efficiency of manufacturing and assembly work. and

The present invention provides a support member for fixing and supporting an end portion of a lower rail of a seat slide device that supports a vehicle seat so that the position thereof can be adjusted in the longitudinal direction of the vehicle to a vehicle body floor,
The support member includes a rail support portion fixed to at least a lower surface of an end portion of the lower rail, a floor fixing portion fixed to the vehicle body floor, and disposed between the rail support portion and the floor fixing portion. A connection portion having a downward slope from the support portion to the floor fixing portion, an outer peripheral edge of the front end portion of the floor fixing portion, and the outer peripheral edge continuously provided on both left and right side edges of the rail support portion and the connection portion. and a flange portion protruding upward,
The floor fixing portion has a vertical wall portion that rises upward at a position between the connecting portion and is formed in a concave shape surrounded by the vertical wall portion and the flange portion on the floor fixing portion side, An upper end of the vertical wall portion is connected to the connecting portion at a position higher than the height of the head of a fixing bolt inserted into a bolt insertion hole provided in the bottom wall of the floor fixing portion. The height of the flange portion on the side of the rail is equal to or slightly higher than the height of the upper surface of the head of the fixing bolt. It is characterized by having a step-like concave portion extending to the upper end portion of the vertical wall portion.

According to the aspect of the present invention, it is possible to reduce the number of parts and improve the efficiency of manufacturing work and assembly work while maintaining the ability to discharge foreign matter.

FIG. 4 is a plan view showing one embodiment of support members provided at front end portions of one-side lower rails arranged in a left and right pair of the seat slide device according to the present invention; FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; It is a front view of the support member of this embodiment. It is a perspective view of the support member of this embodiment. FIG. 4 is a cross-sectional view showing a state in which a cigarette lighter that has fallen inside the lower rail slides down on the support member as the seat slide device operates. FIG. 5 is a perspective view showing a support member provided at the front end portion of the other side lower rail arranged as a set of left and right;

1 to 4 show an embodiment of a support member on the front end side of a seat slide device according to the present invention, FIG. 1 is a plan view of the support member, FIG. 2 is a cross-sectional view taken along line AA of FIG. FIG. 4 is a front view of the support member, and FIG. 4 is a perspective view of the support member. Note that the arrow F in FIGS. 1 and 2 indicates the front side of the vehicle.

First, to briefly explain the seat slide device, this seat slide device has a pair of left and right parallel lower rails 1 extending in the vehicle front-rear direction and arranged side by side in the vehicle width direction. The upper rail 2 is fitted and held so as to be slidable in the longitudinal direction.

The lower rail 1 is formed by bending a metal plate to have a substantially U-shaped cross section with an open upper surface. The lower rail 1 has a bottom wall portion 1a, side wall portions 1b on both sides, and a downward standing wall portion 1c formed by bending the open ends of both side wall portions 1b inward.

An upper rail 2 slidably fitted and held inside the lower rail 1 is formed by bending a metal plate so as to have a substantially U-shaped cross section with an open lower surface. The upper rail 2 has, in addition to the ceiling wall portion 2a and side wall portions 2b on both sides, curved wall portions (not shown) formed by bending the open ends of both side wall portions 2b outward and bending them upward.

When the upper rail 2 is slidably assembled to the lower rail 1, both sides of the lower rail 1 in the width direction are fitted so that the curved wall portion of the upper rail 2 is sandwiched between the side wall portion 1b and the standing wall portion 1c.

The lower rail 1 is fixed to the vehicle body floor 3 via two support members 10 arranged at both front and rear ends. The vehicle body floor 3 is formed in a stepped shape so that the mounting position of the front end portion of the lower rail 1 is lower than the mounting position of the rear end portion of the lower rail 1. It has a high-level floor mounting portion (not shown) and a low-level floor-mounting portion 3a on the front end side, which is positioned lower than the high-level floor mounting portion.

The support member 10 arranged at the front end of one of the lower rails 1 will be described below.

As shown in FIGS. 1 to 4, the support member 10 is integrally formed by, for example, press-molding a metal plate material, and is stepped so that the front end is lower than the rear end in the front-rear direction of the lower rail 1 . formed. That is, the support member 10 is arranged in a rail support portion 11 fixed to the lower surface of the front end portion of the lower rail 1 by two front and rear rivets 4, 4, and in the lower floor mounting portion 3a, and is fixed to the lower floor mounting portion 3a. a connecting portion 13 integrally connecting the rail support portion 11 and the floor fixing portion 12 and having a downward slope portion 13a from the rail support portion 11 to the floor fixing portion 12; An outer peripheral edge of the front end portion of the portion 12 and a flange portion 15 that is provided continuously from the outer peripheral edge to both left and right side edges of the rail support portion 11 and the connecting portion 13 and protrudes upward.

The rail support portion 11 is formed in the shape of a substantially flat rectangular flat plate elongated in the longitudinal direction of the vehicle body, and is arranged with a vertical space between it and the vehicle body floor 3 . The rail support portion 11 has a first rivet hole 11b penetrating through the center of an arcuate protrusion 11a at the rear end portion, and a second rivet hole 11c penetrating through the front end portion near the connecting portion 13. It is

The floor fixing portion 12 has a substantially circular bottom wall 12a and a bolt insertion hole 12b through which a shaft portion 17b of a fixing bolt 17 is inserted. The bolt insertion hole 12b has an inner diameter sufficiently larger than the outer diameter of the shaft portion 17b, and serves as a positioning allowance when fixing the floor fixing portion 12 to the vehicle body floor. The bolt insertion hole 12b is formed inside a cylindrical portion 12c which is formed by punching the center of the bottom wall 12a downward from the upper surface with a punch of a press molding machine. The tubular portion 12c has a protruding length corresponding to the thickness of the carpet of the lower floor attachment portion 3a. The cylindrical portion 12c serves as a reinforcing rib to enhance the rigidity of the floor fixing portion 12. As shown in FIG.

The fixing bolt 17 has a hexagonal head portion 17a and a shaft portion 17b coupled to the head portion 17a and inserted into the bolt insertion hole 12b via a washer 17c. When the shaft portion 17b of the fixing bolt 17 is tightened and fixed to a nut (not shown) arranged on the lower surface of the vehicle body floor, the head portion 17a of the fixing bolt 17 is placed on the bottom wall 12a of the floor fixing portion 12 through the bolt insertion hole 12b. exposed to

Further, the floor fixing portion 12 has a vertical wall portion 16 that rises upward at a position between the connecting portion 13, that is, at a joint portion with the connecting portion 13. The vertical wall portion 16 and the floor fixing portion 12 It is formed in a substantially circular concave shape surrounded by the flange portion 15 on the side.

The vertical wall portion 16 is formed in a substantially curved shape in a plan view along between the left and right flange portions of the connecting portion 13, and rises substantially vertically in the vertical direction. It is inclined outward (near the center of the floor fixing portion 12) at a slight angle toward the lower end portion 16b. Further, the upper end portion 16a of the vertical wall portion 16 is positioned higher than the upper surface height position of the head portion 17a of the fixing bolt 17 when the floor fixing portion 12 is fixed to the lower floor mounting portion 3a with the fixing bolt 17. is connected to the connecting portion 13 at the .

The connecting portion 13 has a stepped concave portion 18 extending from the front edge of the rail support portion 11 to the vicinity of the upper end portion 16a of the vertical wall portion 16 at a substantially central position in the width direction of the slope portion 13a.

As shown in FIGS. 1 and 2, the recessed portion 18 is formed at the central portion of the slope portion 13a in the width direction, and is entirely recessed toward the vehicle body floor 3, and has a predetermined width W through which foreign matter can pass. Together, it is formed in a rectangular shape extending in the front-rear direction. The concave portion 18 has a central portion 18a in the longitudinal direction that is bent into a substantially V-shape, and a flat portion 18b that extends from the central portion 18a to the vicinity of the upper end portion 16a of the vertical wall portion 16, and a rail support from the central portion 18a. and a curved portion 18c that extends to the front end of the portion 11 (near the second rivet hole 11c) and bulges upward in a curved shape.

Both side walls 18d, 18d of the recessed portion 18 are bent inwardly to secure the rigidity of the entire area from the front end portion on the side of the vertical wall portion 16 to the rear end portion on the side of the rail support portion 11. ing.

The flat portion 18b is formed substantially horizontally. It should be noted that the vertical wall portion 16 may be inclined downward at a slight angle from the central portion 18a to the vicinity of the upper end portion 16a of the vertical wall portion 16. FIG.

As described above, the curved portion 18c is formed in a curved shape from the center portion 18a to the vicinity of the front end 11d of the rail support portion 11, and the recess start portion 18e recessed downward at the coupling position on the front end 11d side of the rail support portion 11. is provided. The recess start portion 18e is provided at a position as close as possible to the front end 1d of the lower rail 1, which is on the rear side of the front end 11d of the rail support portion 11, thereby supporting the rail support portion 11 as well. The rigidity of the entire member 10 is enhanced.

The concave portion 18 is formed in a slope shape from a curved portion 18c at a high position to a flat portion 18b at a low position. to the central portion 18a is a slope with a relatively large angle. Further, the concave portion 18 is in a state in which the uppermost portion of the curved portion 18c, that is, the concave portion starting portion 18e is in continuous communication with the front end 1d of the lower rail 1. As shown in FIG.

The flange portion 15 rises upward from the outer peripheral edges of the rail support portion 11, the floor fixing portion 12, and the connecting portion 13 and is formed in a folded outward shape, and has a substantially arcuate cross section. That is, strictly speaking, the cross-sectional shape of the flange portion 15 has a substantially downward U-shape on the side of the rail support portion 11, and is bent into a substantially horizontal U-shape on the side of the floor fixing portion 12 to form an upper end face 15a. is formed in a flat shape, and the folding shape is continuously changed from a horizontal U-shape to an arc shape from the side of the connecting portion 13 to the side of the rail support portion 11 . The flange portion 15 is arranged in an annular shape so as to surround the outer periphery of the floor fixing portion 12 on the side of the floor fixing portion 12, and together with the vertical wall portion 16, the entire floor fixing portion 12 forms a circular recessed space. Configure. In particular, it is formed so as to surround the head 17a of the fixing bolt 17 with a narrow space around the head 17a. The flange portion 15 on the side of the floor fixing portion 12 has an upper end surface 15 a at the front end portion which is slightly higher than the upper surface of the head portion 17 a of the fixing bolt 17 . The height of the upper end surface 15a may be formed to be substantially the same height as the upper surface of the head 17a of the fixing bolt 17. As shown in FIG.

The flange portion 15 extends linearly from both ends surrounding the floor fixing portion 12 to the edge of the rail support portion 11 via both sides of the connecting portion 13 and the rail support portion 11 . Furthermore, since the flange portion 15 maintains an arc-shaped (U-shaped) shape in cross section and is not formed with a notch or a hole in any part, it does not cause a decrease in rigidity. .

[Action and effect of the present embodiment]
A method for fixing the seat slide device to the vehicle body floor via the support member 10 of the present embodiment having the above configuration will be briefly described. First, the support member 10 is fixed in advance by caulking the two rivets 4, 4 inserted through the rivet holes 11b, 11c of the rail support portion 11 to the front end portion of the lower rail 1. As shown in FIG.

Thereafter, the lower rail 1 and the support member 10 are positioned and arranged at predetermined positions on both floor mounting portions of the vehicle body floor 3, and the fixing bolts 17 are inserted into the bolt insertion holes 12b of the floor fixing portions 12 to tighten the bolts. By doing so, the seat slide device can be fixed to the vehicle body floor. Needless to say, the entire seat slide device is fixed to the vehicle floor by fixing the other lower rail to the vehicle floor.

FIG. 5 is an explanatory drawing showing the state in which a foreign object such as a lighter ejected from the inside of the lower rail slides down the supporting member and is ejected to the outside.

That is, if a passenger accidentally drops a foreign object such as a lighter 14 into the U-shaped space of the lower rail 1, the lighter 14 is pushed out of the lower rail 1 toward the support member 10 as the upper rail 2 moves forward. be 5, the lighter 14 enters the concave portion 18 of the rail support portion 11, slides on the curved upper surface of the curved portion 18c, and slides from the front end portion of the flat portion 18b to the vertical wall portion 16. slide down on the upper end 16a of the Therefore, the tip portion 14a of the lighter 14 passes over the upper surface of the head portion 17a without being caught by the fixing bolt 17, slides on the upper end surface 15a of the flange portion 15, and is discharged to the outside.

Therefore, the lighter 14 is quickly ejected to the outside without remaining inside the floor fixing portion 12 .

That is, the height of the upper end portion 16a of the vertical wall portion 16 is higher than the upper surface of the head portion 17a of the fixing bolt 17, and the height of the upper end surface 15a of the flange portion 15 on the front end side is also higher than that of the fixing bolt 17. The position is equal to or slightly higher than the upper surface of the head 17a. Therefore, as described above, the lighter 14 passes from the curved portion 18c to the flat portion 18b, slides from the upper end portion 16a of the vertical wall portion 16 on the upper surface of the head portion 17a of the fixing bolt 17, and slides on the flange portion on the front end side. 15 falls to the outside from the upper end surface 15a. As a result, the lighter 14 can be prevented from falling into the gap between the head portion 17 a of the fixing bolt 17 and the floor fixing portion 12 .

In particular, by providing the connecting portion 13 with the flat portion 18b and the curved portion 18c, the curved portion 18c serves as a so-called curved slider (slide), and the flat portion 18b serves as a jumping platform. For this reason, as described above, the lighter 14 slides from the rail support portion 11 through the concave portion starting portion 18e and slides from the curved portion 18c toward the flat portion 18b. It slides down well and can jump out onto the head 17a of the fixing bolt 17 by means of the flat portion 18b. Therefore, the lighter 14 slides down from the plane portion 18b through the upper end portion 16a of the vertical wall portion 16 in a jumping state, passes over the upper surface of the head portion 17a of the fixing bolt 17, and moves onto the flange portion 15 on the floor fixing portion 12 side. is quickly discharged to the outside by sliding on the upper end surface 15a of the

As described above, in this embodiment, unlike the prior art disclosed in the above publication, foreign matter such as the lighter 14 is discharged outside by using the leg cover attached to the leg bracket. , the flat portion 18b and the curved portion 18c of the concave portion 18, the foreign matter such as the lighter 14 can be quickly discharged to the outside. Therefore, it is possible to reduce the number of parts, thereby improving the manufacturing work efficiency of the support member 10 and also improving the assembly work efficiency.

Further, by providing the convex arc-shaped curved portion 18c, the moldability of the concave portion 18 of the connecting portion 13 is improved. That is, when the support member 10 is formed by press molding, the curved portion 18c can be curved along the slope between the connecting portion 13 and the rail support portion 11, so that the side wall 18d has a gently curved shape. Therefore, moldability is improved.

Further, in the present embodiment, it is not necessary to provide a locking hole or the like in the leg bracket as an attachment means for attaching the leg cover to the leg bracket as in the prior art, so manufacturing workability is improved in this respect as well. .

Further, since the recess 18 provided in the connecting portion 13 functions as a reinforcing portion of the support member 10, the rigidity of the support member 10 as a whole is increased, and the lower rail 1 is stably and firmly supported on the vehicle body floor. can do.

In particular, in the present embodiment, the portion between the substantially horizontal plane portion 18b of the recess 18 and the substantially vertical vertical wall portion 16 forms a substantially L-shaped stepped portion, so this portion sufficiently functions as a reinforcing rib. Therefore, the rigidity of the support member 10 can be increased.

A recess starting portion 18e is formed in the vicinity of the end portion 1d of the lower rail 1 (a resin end cap is provided so as to cover this end portion) beyond the joining position between the connecting portion 13 and the rail support portion 11. Since this recess starting portion 18e also functions as a reinforcing rib, the rigidity of the connecting portion 13 and the rail support portion 11 can be further improved.

In particular, since the recess starting portion 18e is recessed, it can be provided as close to the end face 1d of the lower rail 1 as possible, so that the rigidity of the support member 10 due to the recess 18 can be sufficiently increased. .

Further, the flange portion 15 is bent outward from the upper ends of the rail support portion 11, the floor fixing portion 12, and the connecting portion 13, and is bent to have a substantially circular cross section (horizontal U-shape). ing. Therefore, the rigidity of the support member 10 as a whole becomes sufficiently high together with the specific structure of the concave portion 18 . As a result, the support member 10 can support the lower rail 1 stably and firmly.

In addition, since the flange portion 15 is not provided with a locking hole or the like unlike the prior art, a decrease in rigidity is suppressed in this respect, and high rigidity can be maintained.

FIG. 6 shows the support member 10 attached to the front end side of the lower rail 1 on the other side. The basic structure of this support member 10 is the same as that of the support member 10 shown in FIGS. 1 to 4, but the bolt insertion holes 12b of the floor fixing portion 12 are elongated in the longitudinal direction of the vehicle body. The bolt insertion holes 12b are used for lateral positioning when two lower rails 1 are attached to the floor of the vehicle body via four support members 10. As shown in FIG.

The present invention is not limited to the configuration of the above embodiment. For example, the curved portion 18c of the concave portion 18 is formed in a convex arc shape, but it can also be formed in a planar shape. Moreover, the flange part 15 is good also considering the whole as a downward U shape. Moreover, the fixing bolt 17 is not limited to a hexagonal bolt, and may be any means for fixing to the vehicle body floor 3 .

Also, the foreign matter may be something other than the lighter 14 .

As the support member of the seat slide device based on the embodiment described above, for example, the following modes are conceivable.

That is, as a preferred embodiment of the present invention, a support member for fixing and supporting an end portion of a lower rail of a seat slide device for supporting a vehicle seat so as to be adjustable in the longitudinal direction of the vehicle to a vehicle body floor, wherein at least the end portion of the lower rail is provided. A rail support portion fixed to the lower surface of the vehicle body, a floor fixing portion fixed to the vehicle body floor, and disposed between the rail support portion and the floor fixing portion and inclined downward from the rail support portion to the floor fixing portion. and a flange portion continuously provided on the outer peripheral edge of the front end portion of the floor fixing portion and on the left and right side edges of the rail support portion and the connecting portion from the outer peripheral edge and protruding upward. , and
The floor fixing portion has a vertical wall portion that rises upward at a position between the connecting portion and is formed in a concave shape surrounded by the vertical wall portion and the flange portion on the floor fixing portion side, An upper end of the vertical wall portion is connected to the connecting portion at a position higher than the height of the head of a fixing bolt inserted into a bolt insertion hole provided in the bottom wall of the floor fixing portion. The height of the flange portion on the side of the rail is equal to or slightly higher than the height of the upper surface of the head of the fixing bolt. According to this aspect of the present invention, since the connecting portion is connected to the upper end of the vertical wall portion, the rail support of the connecting portion is provided. The inclination from the part to the vertical wall part can be made gentle.

In addition, the height of the upper end of the vertical wall is higher than the head of the fixing bolt, and the height of the flange on the side of the vertical wall is equal to or slightly higher than the head of the fixing bolt. It is in a high position. Therefore, when a foreign matter such as a cigarette lighter falls into the lower rail, the foreign matter is ejected from the lower rail as the seat slide device moves. From the upper end of the vertical wall portion, it slides vigorously on the upper surface of the head of the fixing bolt and falls outside over the upper end of the flange portion of the floor fixing portion. As a result, foreign matter such as a lighter can be prevented from falling into the gap between the head of the fixing bolt and the floor fixing portion.

More preferably, the concave portion of the connecting portion has a flat portion extending from a substantially central position in the longitudinal direction to the upper end portion of the vertical wall portion.

According to this aspect of the present invention, since the connecting portion between the substantially horizontal plane portion of the recess and the substantially vertical vertical wall portion has a substantially L-shaped stepped shape, this portion functions as a reinforcing rib. do. This increases the rigidity of the support member.

Further, when the foreign matter slides down the inclined surface of the bottom wall of the connecting portion and reaches the flat portion, the foreign object is further given a jumping force at the upper end portion of the vertical wall portion. For this reason, the foreign matter is quickly discharged from the upper surface of the head of the fixing bolt over the flange portion on the side of the floor fixing portion to the outside. Therefore, foreign matter does not enter between the head and the floor fixing portion.

More preferably, the recessed portion of the connecting portion is provided with a recessed portion starting portion recessed downward in the vicinity of the position of the end surface of the lower rail in the rail support portion.

According to this aspect of the invention, the recess starting portion functions as a reinforcing rib, so that the rigidity from the connecting portion to the vicinity of the upper rail end surface of the rail support portion can be further improved.

More preferably, the concave portion of the connecting portion is provided with an arc-shaped curved portion that is convex upward in the front-rear direction between the concave portion starting portion and the flat portion.

According to this aspect of the present invention, by providing the convex arc-shaped curved portion, the curved portion functions as a curved slider (slide), and the planar portion functions as a jumping platform. For this reason, a foreign object such as a lighter that has fallen into the lower rail slides from the rail support portion through the start portion of the concave portion toward the flat portion from the curved portion, but at the curved portion, it slides vigorously down to the flat portion and is fixed by the flat portion. It can be protruded over the head of the bolt. Therefore, the foreign matter slides down from the flat portion through the vertical wall portion in a jump state, passes through the upper surface of the fixing bolt head, and is quickly discharged from the floor fixing portion to the outside.

Also, by providing the convex arc-shaped curved portion, the moldability of the concave portion of the connecting portion is improved. That is, for example, when the support member is formed by press molding, the curved portion can be formed in a curved shape along the slope between the connecting portion and the rail support portion. becomes better.

More preferably, the flange portion extends upward from the floor fixing portion, the connecting portion, and the rail support portion, and is folded outward to have a generally arcuate cross section.

According to this aspect of the invention, since the flange portion is formed to have an arcuate cross section, foreign matter that has slipped down onto the head of the fixing bolt is discharged outside along the arcuate outer surface of the flange portion. easier to be

In addition, the arc shape of the flange increases not only the rigidity of the floor fixing portion, the connecting portion and the rail support portion, but also the rigidity of the flange itself, so that the lower rail can be stably and firmly supported. In particular, unlike the prior art, the flange portion is not provided with a locking hole or the like, so that a decrease in rigidity can be sufficiently suppressed, and high rigidity can be ensured.

DESCRIPTION OF SYMBOLS 1... Lower rail 2... Upper rail 3... Vehicle body floor 3a... Lower floor attachment part 10... Support member 11... Rail support part 12... Floor fixing part 13... Connection part 14... Cigarette lighter 14 ( Foreign matter) 15 Flange portion 15a Upper end surface 16 Vertical wall portion 16a Upper end portion 17 Fixing bolt 17a Head portion 18 Concave portion 18a Central portion 18b Plane portion 18c … curved portion.

Claims (5)

A support member for fixing and supporting an end portion of a lower rail of a seat slide device for supporting a vehicle seat so as to be positionally adjustable in the longitudinal direction of the vehicle to a vehicle body floor,
The support member is
a rail support fixed to at least the lower surface of the end of the lower rail;
a floor fixing portion fixed to the vehicle body floor;
a connecting portion disposed between the rail support portion and the floor fixing portion and having a downward slope from the rail support portion to the floor fixing portion;
an outer peripheral edge of the front end portion of the floor fixing portion and a flange portion that is continuously provided from the outer peripheral edge to both left and right side edges of the rail support portion and the connecting portion and protrudes upward;
with
The floor fixing portion has a vertical wall portion that rises upward at a position between the connecting portion and is formed in a concave shape surrounded by the vertical wall portion and the flange portion on the floor fixing portion side,
The vertical wall portion is connected to the connecting portion at a position where the upper end is higher than the height of the head of the fixing bolt inserted into the bolt insertion hole provided in the bottom wall of the floor fixing portion,
The flange portion on the side of the floor fixing portion is formed so that its height is the same as or slightly higher than the height of the upper surface of the head portion of the fixing bolt,
A support member for a seat slide device, wherein the connecting portion has a stepped recess extending from the rail support portion to an upper end portion of the vertical wall portion at a substantially central position in the width direction. In the support member of the seat slide device according to claim 1,
A supporting member for a seat slide device, wherein the concave portion of the connecting portion has a flat portion extending from a substantially central position in the longitudinal direction to an upper end portion of the vertical wall portion. In the support member of the seat slide device according to claim 2,
A supporting member for a seat slide device, wherein the recessed portion of the connecting portion is provided with a recessed portion starting portion that is recessed downward in the vicinity of an end face position of the lower rail in the rail support portion. In the support member of the seat slide device according to claim 3,
A supporting member for a seat slide device, wherein the concave portion of the connecting portion is provided with a curved portion that is formed in an arcuate shape that protrudes upward in the front-rear direction between the concave portion starting portion and the flat portion. . In the support member of the seat slide device according to any one of claims 1 to 4,
A support member for a seat slide device, wherein the flange portion extends upward from the floor fixing portion, the connecting portion, and the rail support portion and is folded outward to have a substantially arcuate cross section.

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