JP2022185539A - Seat rail and method for attaching seat to seat rail - Google Patents

Abstract

To provide a seat rail which can attach a seat to a vehicle floor at a lower position.SOLUTION: [Claim 1] A seat rail 100 has: a pair of fixed rails 11; a pair of movable rails 12 which is slidably attached to the pair of fixed rails 11 respectively; and a front side seat attachment member 20 in which a pair of front side seat attachment parts 20a, 20g, which extend in a vertical direction and to which a front part of a seat cushion of a seat is attached, is formed and which is attached to front parts of the pair of movable rails 12. The front side seat attachment member 20 is connected to a lower end of each of the pair of front side seat attachment parts 20a, 20g, extends in a width direction at a position lower than an upper end part of the fixed rail 12, and further has a pair of escape parts 20b, 20f which attach the pair of front side seat attachment parts 20a, 20g to the pair of movable rails 12 respectively.SELECTED DRAWING: Figure 1

Description

The present invention relates to a seat rail for attaching a seat to the floor of a vehicle such as a passenger car.

2. Description of the Related Art Conventionally, there are seat rails for attaching a seat to a vehicle such as a passenger car, as disclosed in Japanese Unexamined Patent Application Publication No. 2002-200012. This seat rail has a fixed rail that is fixed to the floor in the passenger compartment of the vehicle, and a movable rail that is provided movably with respect to the fixed rail. A seat fixing plate to which a seat is attached is attached to the upper part of the movable rail. With such seat rails, the seat is attached to the floor of the vehicle so as to be movable in the front-rear direction.

JP-A-8-183373

However, in the seat rail disclosed in Patent Document 1, since the seat fixing plate to which the seat is attached is attached to the upper part of the movable rail, there is a problem that the seat attachment position is higher than the floor. .

If the mounting position of the seat is higher than the floor, the occupant's head will be close to the ceiling of the vehicle, causing the occupant to feel cramped. In addition, the driver cannot take an appropriate position, making it difficult to operate the accelerator pedal, brake pedal, and clutch pedal, and causing pain in the portion of the thigh that contacts the seat surface. Furthermore, since the position of the occupant with respect to the floor becomes high, the center of gravity of the vehicle including the occupant becomes high, the amount of rolling and pitching of the vehicle increases, and the steering stability of the vehicle deteriorates.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a seat rail and a method for attaching a seat to the seat rail that allows the seat to be attached to the floor of the vehicle at a lower position.

The seat rail according to claim 1, which is made to achieve the above object,
a pair of fixed rails (11) arranged along the front-rear direction and spaced apart from each other;
a pair of movable rails (12) slidably attached to each of the pair of fixed rails;
A pair of front seat mounting portions (20a, 20g) extending in the vertical direction to which a front portion of a seat cushion of the seat is mounted is formed, and a front side seat mounting member (20) is mounted to the front portions of the pair of movable rails. When,
a pair of rear seat mounting portions (30a, 30g) extending in the vertical direction to which the rear portion of the seat cushion is mounted; and a rear seat mounting member (30) mounted to the rear portion of the pair of movable rails. a seat rail (100) having:
The front seat mounting member is connected to the lower ends of the pair of front seat mounting portions, extends in the width direction at a position below the upper end portion of the movable rail, and extends in the width direction of each of the pair of front seat mounting portions. to each of the pair of movable rails.

According to this, the pair of relief portions are connected to the respective lower ends of the front seat mounting portions, extend in the width direction at a position below the upper end portion of the movable rail, and connect the pair of front seat mounting portions. It is attached to each of a pair of movable rails. Therefore, the front seat attachment portion to which the front portion of the seat cushion is attached can be positioned below the upper end portion of the fixed rail. As a result, the front portion of the seat cushion can be positioned further downward, which in turn allows the seat to be attached to the floor of the vehicle at a lower position.

The seat rail according to claim 2 is the seat rail according to claim 1,
The front seat mounting member includes:
a pair of vertical portions (20c, 20e) whose lower ends are connected to the ends of the pair of relief portions and extend vertically upward from the connecting portions;
a transverse portion (20d) having both ends connected to the upper ends of the pair of vertical portions, a lower surface attached to the upper surface of the pair of movable rails, and connecting the pair of movable rails.

According to this, a pair of movable rails are connected by a transverse portion. Therefore, it is possible to improve the rigidity of the seat rail, and to suppress rattling of the seat attached to the seat rail.

In addition, since the relief portion is attached to the movable rail through the vertical portion and the transverse portion, the relief portion does not peel off from the movable rail compared to the structure in which the relief portion is directly attached to the movable rail. It is possible to prevent slippage. In other words, when an occupant sits on the seat and a downward force acts on the relief portion, the downward force acts on the transverse portion via the vertical portion to which the relief portion is connected. Since it is attached to the top and supported by the movable rail, it is possible to prevent the relief portion from peeling off from the movable rail.

The seat rail according to claim 3 is the seat rail according to claim 1 or claim 2,
The rear seat mounting members are connected to the upper ends of the pair of rear seat mounting portions, extend in the width direction, and are attached to the upper surfaces of the rear portions of the pair of movable rails. ), and
The rear seat mounting portion has a portion positioned below the upper surface of the movable rail.

According to this, since the rear seat mounting portion has a portion positioned below the upper surface of the movable rail, the mounting bolt for mounting the rear portion of the seat cushion to the rear seat mounting portion is inserted. A hole may be formed in the rear seat mounting portion at a position below the upper surface of the movable rail. Therefore, the rear portion of the seat cushion can be positioned further downward, and the seat can be attached to the floor of the vehicle at a lower position.

The seat rail according to claim 4 is the seat rail according to claims 1 to 3,
The rear seat mounting member further has a connecting portion (30j) having both ends connected to the pair of horizontal portions and connecting the pair of horizontal portions,
A rear recessed portion (30k) recessed downward is formed in the connection portion.

According to this, the connecting portion is connected to the pair of horizontal portions. Therefore, the rear portions of the pair of movable rails are connected by the horizontal portion and the connecting portion. As a result, it is possible to improve the rigidity of the seat rails and suppress the rattling of the seat attached to the seat rails.

In addition, the connecting portion is formed with a rear recessed portion that is recessed downward. Therefore, it is possible to prevent the bottom surface of the seat cushion from coming into contact with the connecting portion, and to prevent deterioration of the cushioning property of the seat cushion.

In addition, in the seat rail according to claim 4,
The rear recessed portion is
a rear interference prevention portion (30d) extending horizontally below the pair of horizontal portions;
A pair of rear slanted portions (30c, 30e) connected to both ends of the rear interference prevention portion and slanted upward with distance from the rear interference prevention portion. is preferred.

With this configuration, the rigidity of the rear seat attachment member can be increased compared to a configuration in which the member connecting the rear interference prevention portion and the horizontal portion extends in the vertical direction. Therefore, it is possible to improve the rigidity of the seat rail, and to suppress rattling of the seat attached to the seat rail.

The seat rail according to claim 5 is the seat rail according to claims 1 to 4,
a bracket attachment member (40) extending in the width direction, attached to the lower surface of the front part of the pair of fixed rails, and coupling the pair of fixed rails;
a front bracket (60) attached to both ends of the bracket attachment member and formed with a bolt hole (60c);
The bracket attachment member is formed with a front recessed portion (40f) recessed upward at a position between the pair of fixed rails.

According to this, the front portions of the pair of fixing members are coupled by the bracket attachment member. Therefore, it is possible to improve the rigidity of the seat rail, and to suppress rattling of the seat attached to the seat rail.

In addition, the bracket mounting member is formed with a front concave portion that is concave upward at a position between the pair of fixed rails. Therefore, by arranging the harness arranged on the floor below the front concave portion, it is possible to prevent interference between the harness and the bracket mounting member. As a result, interference between the harness and the bracket mounting member can be prevented even if the bolt holes formed in the front bracket are positioned closer to the bracket mounting member. Therefore, by locating the bolt holes formed in the front bracket closer to the bracket mounting member side, the front portion of the seat rail can be brought closer to the floor, and the seat can be positioned at a lower position in the vehicle. can be installed on the floor of

In the invention according to claim 5,
The front concave portion is
a front interference prevention portion (40c) positioned above the lower surfaces of the pair of fixed rails and extending in the horizontal direction;
A pair of front inclined portions (40b, 40d) connected to both ends of the front interference prevention portion and inclined so as to be positioned downward as the distance from the front interference prevention portion increases.

With this configuration, since the pair of front inclined portions are inclined so as to be positioned downward as they are separated from the front interference prevention portion, when the members connected to both ends of the front interference prevention portion extend in the vertical direction. , the rigidity of the bracket attachment member can be increased. Therefore, it is possible to improve the rigidity of the seat rail, and to suppress rattling of the seat attached to the seat rail.

The seat rail according to claim 6 is the seat rail according to claims 1 to 5,
further comprising a pair of rear brackets (70) attached to the lower surfaces of the rear portions of the pair of fixed rails and formed with mounting holes (70a);
A head accommodating portion (70b) having a larger inner diameter than that of the lower side of the mounting hole is formed in the upper opening of the mounting hole.

According to this, since the upper opening of the mounting hole is formed with a head accommodating portion having a larger inner diameter than that of the lower side of the mounting hole, the head of the mounting bolt that is inserted into the mounting hole and screwed into the floor is part can be stored in the head storage part. Therefore, it is possible to prevent the head of the mounting bolt from being exposed from the upper surface of the rear bracket. As a result, when the movable rail is slid rearward with respect to the fixed rail, it is possible to prevent interference with the head of the mounting bolt of the rear seat mounting portion. Therefore, the lower end of the rear seat mounting portion can be brought closer to the rear bracket and positioned downward, the rear portion of the seat cushion can be positioned further downward, and the seat can be positioned at a lower position in the vehicle. It can be installed on the floor.

The seat rail according to claim 7 is the seat rail according to claims 1 to 6,
A pair of lock mechanisms (13) for switching between a locked state in which the pair of movable rails cannot slide with respect to the pair of fixed rails and a released state in which the pair of movable rails can slide with respect to the pair of fixed rails. When,
a handle lever (80) attached to the pair of lock mechanisms,
The handle lever has a pair of side members (81, 83, 84) attached to the pair of lock mechanisms and extending forward of the lock mechanism, and both ends of the handle lever are attached to the front ends of the pair of side members. and a connecting member (82) connected to connect the front ends of the pair of side members,
At least one of the pair of side members is inclined so as to be positioned toward the center in the left-right direction as it is positioned forward.

According to this, since at least one of the pair of side members is inclined so as to be positioned toward the center in the left-right direction as it is positioned forward, the front side of either fixed rail of the pair of fixed rails is inclined. Even if the floor is raised, interference between the raised portion of the floor and one of the pair of side members can be prevented. Therefore, even if the bolt holes formed in the front bracket are positioned closer to the bracket mounting member, it is possible to prevent interference between the raised portion of the floor and either one of the pair of side members. can. Therefore, the bolt holes formed in the front bracket can be positioned closer to the bracket mounting member side, the front portion of the seat rail can be positioned closer to the floor, and the seat can be positioned at a lower position. It can be installed on the floor of the vehicle.

A method for attaching a seat to a seat rail according to claim 8, which has been made to achieve the above object, comprises:
A seat attachment method for attaching a seat (500) to a seat rail (100), comprising:
The seat comprises a seat cushion (501), a seat back (502) pivotably attached to the rear part of the seat cushion, and a base member (504) attached to the back surface of the seat cushion,
The base member includes a pair of side frames (504a) arranged along the front-rear direction and opposed to each other and having mounting portions (504c, 504e) formed at the front and rear portions, and the pair of side frames (504a) at both ends. A frame connection member (504b) attached to the inside of the side frame of and connecting the pair of side frames,
The seat rail is
a pair of fixed rails (11) arranged along the front-rear direction and spaced apart;
a pair of movable rails (12) slidably attached to each of the pair of fixed rails;
A pair of front seat mounting portions (20a, 20g) extending in the vertical direction to which the front side of the two mounting portions is mounted; and upper ends of the movable rails connected to respective lower ends of the pair of front seat mounting portions. A pair of relief portions (20b, 20f) extending in the width direction at a lower position than the lower end of the pair of relief portions connects to the ends of the pair of relief portions, and extends vertically upward from the connecting portion. a pair of vertical parts (20c, 20e) connected to each other, and a transverse part (20d) whose both ends are connected to the upper ends of the pair of vertical parts and whose lower surface is attached to the upper surface of the pair of movable rails to connect the pair of movable rails. ), a front seat mounting member (20) comprising
A pair of rear seat mounting portions (30a, 30g) extending in the vertical direction to which the rear side of the two mounting portions is mounted are formed, and are attached to the rear portions of the pair of movable rails to support the pair of movable rails. a mating rear seat attachment member (30);
The frame connection member is removed from the seat before attaching the seat to the seat rails.

According to this, since the frame connection member is removed before the seat is attached to the seat rail, the frame connection member is prevented from interfering with the front seat attachment member, the rear seat attachment member, and the movable rail. be able to. Therefore, even if the front seat mounting portion and the rear seat mounting portion are positioned at a lower position, the frame connecting member can be prevented from interfering with the front seat mounting member, the rear seat mounting member, and the movable rail. can. Therefore, by positioning the front seat mounting portion and the rear seat mounting portion at a lower position, the seat can be mounted at a lower position on the floor of the vehicle.

In addition, since the seat rail has a pair of movable rails connected by a crossing portion, even if the frame connection member that connects the pair of side frames is removed, the rigidity of the seat attached to the seat rail is prevented from decreasing. be.

It should be noted that the reference numerals in parentheses of each means described in this column and the scope of claims are examples showing the corresponding relationship with specific means described in the embodiments described later.

1 is a perspective view of a seat rail according to one embodiment of the invention; FIG. It is a top view of the seat rail of one embodiment of the present invention. It is a bottom view of the seat rail of one embodiment of the present invention. It is a left view of the seat rail of one embodiment of the present invention. It is a front view of the seat rail of one embodiment of the present invention. It is a rear view of the seat rail of one embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2; It is a side view of a seat. It is a bottom view of the seat. FIG. 4 is a side view of a state in which a seat is attached to the seat rail of one embodiment of the present invention; FIG. 4 is a side view of the seat attached to the seat rail;

(Seat rail structure)
A seat rail 100 of one embodiment according to the present invention will be described below with reference to the drawings. In FIG. 2, the front side of the seat rail 100 and each member constituting the seat rail 100 (hereinafter abbreviated as the seat rail 100 and the like) is shown below the paper surface, the rear side of the seat rail 100 and the like is shown above the paper surface, and the seat rail 100 is shown on the left side of the paper surface. , etc., and the right side of the paper surface are defined as the right side of the seat rail 100 and the like. Further, in FIG. 4, the lower side of the page is the lower side of the seat rail 100, the upper side of the page is the upper side of the seat rail 100, etc., the left side of the page is the rear side of the seat rail 100, etc., and the right side of the page is the front side of the seat rail 100, etc. Further, in FIG. 5, the lower side of the paper indicates the lower side of the seat rail 100, etc., the upper side of the page indicates the upper side of the seat rail 100, etc., the left side of the page indicates the left side of the seat rail 100, etc., and the right side of the page indicates the right side of the seat rail 100, etc. do. Note that the lateral direction of the seat rail 100 and the like is the width direction of the seat rail 100 and the like.

As shown in FIGS. 1 to 6, the seat rail 100 includes two slide mechanisms 10, a front seat mounting member 20, a rear seat mounting member 30, a bracket mounting member 40, a reinforcing member 50, two front brackets 60, 2 It consists of two rear brackets 70 and a handle lever 80 .

The two slide mechanisms 10 are arranged above the floor F along the longitudinal direction of the floor F in the passenger compartment of the vehicle. The two slide mechanisms 10 are arranged to face each other with a gap in the left-right direction.

As shown in FIGS. 1 and 5, the slide mechanism 10 includes a fixed rail 11, a movable rail 12, and a lock mechanism 13. As shown in FIG. The movable rail 12 is slidably housed in the fixed rail 11 and attached to the fixed rail 11 so as to be slidable in the front-rear direction.

As shown in FIG. 1, the pair of fixed rails 11 are arranged along the front-rear direction. Also, the pair of fixed rails 11 are arranged apart from each other. The fixed rail 11 is formed in the shape of an elongated rail, and as shown in FIG. there is The upper end portion of the side portion 11b is formed with an engaged portion 11c that is bent outwardly of the side portion 11b so as to have a U-shaped cross section.

The movable rail 12 is formed in a long rail shape, and as shown in FIG. It is composed of a lower surface portion 12c bent inward from the lower end of the portion 12b and an engaging portion 12d bent upward from the tip of the lower surface portion 12c.

As shown in FIG. 5, the pair of engaging portions 12d of the movable rail 12 are inserted into the pair of engaged portions 11c of the fixed rail 11, and the engaging portions 12d are engaged with the engaged portions 11c. , a movable rail 12 is slidably fixed to a fixed rail 11 . The bottom surface portion 11 a of the fixed rail 11 protrudes slightly downward from the bottom surface portion 12 c of the movable rail 12 .

The lock mechanism 13 is a mechanism for switching between a locked state in which the movable rail 12 cannot slide with respect to the fixed rail 11 and a released state in which the movable rail 12 can slide with respect to the fixed rail 11 . The lock mechanism 13 is provided inside the slide mechanism 10 and partially exposed inside the pair of movable rails 12 .

A handle lever 80 is fixed to the pair of lock mechanisms 13 . As shown in FIGS. 1 and 2, the handle lever 80 in this embodiment is formed by bending a round bar, and is composed of a left member 81, a connecting member 82, a right member 83, and a base-side right member 84. It is

As shown in FIG. 2, the left member 81 is connected to the exposed portion of the left locking mechanism 13 and extends in the front-rear direction. The left member 81 is slightly inclined so as to be positioned further to the right (inward in the left-right direction) as it is positioned forward in the front-rear direction. As shown in FIG. 4, the left member 81 is inclined with respect to the floor F so that the left member 81 is positioned upward as it is positioned forward.

As shown in FIG. 2, the base-side right member 84 is shorter than the left member 81, is connected to the exposed portion of the right lock mechanism 13, and extends in the front-rear direction. The right member 83 is connected to the front end of the right base-side member 84 and extends left front from the connection with the right base-side member 84 . In other words, the right member 83 is inclined so as to be positioned leftward (center side in the left-right direction) as it is positioned forward. As shown in FIG. 2, the inclination angle α of the right member 83 with respect to the front-rear direction is larger than the inclination angle β of the left member 81 with respect to the front-rear direction in plan view.

The connection member 82 has both ends connected to the front ends of the left member 81 and the right member 83, connects the left member 81 and the right member 83, and extends in the left-right direction.

When the occupant lifts the handle lever 80 upward, the lock mechanism 13 is released and the movable rail 12 becomes slidable with respect to the fixed rail 11 . On the other hand, when the occupant releases the handle lever 80 , the lock mechanism 13 is locked and the movable rail 12 is fixed to the fixed rail 11 . With this configuration, the occupant can move the seat 500 attached to the seat rail 100 to a desired position in the vehicle compartment in the longitudinal direction by operating the handle lever 80 .

As shown in FIGS. 1 and 5 , the bracket attachment member 40 extends in the width direction and is attached to the lower surfaces of the pair of fixed rails 11 . The bracket attachment member 40 is a member formed by bending a vertically long plate. The bracket mounting member 40 has a left bracket mounting portion 40a, a left front inclined portion 40b, a front interference prevention portion 40c, a right front inclined portion 40d, and a right bracket mounting portion 40e.

As shown in FIGS. 1 and 2 , the bracket mounting member 40 is arranged in the width direction in front of the pair of slide mechanisms 10 so as to be perpendicular to the pair of slide mechanisms 10 . A left bracket mounting portion 40a and a right bracket mounting portion 40e of the bracket mounting member 40 are respectively attached to the lower surface portions 12c of the pair of fixed rails 11 by welding. A pair of fixed rails 11 are coupled by the bracket attachment member 40 .

As shown in FIGS. 1 and 5, the left bracket attachment portion 40a and the right bracket attachment portion 40e are in the form of vertically long plates, and extend parallel to the floor F with the longitudinal direction coinciding with the width direction. there is

The left front inclined portion 40b is plate-shaped, connects to the right end of the left bracket attachment portion 40a, and extends rightward from this connection portion. The left front inclined portion 40b is inclined with respect to the floor F so as to be positioned upward as it is positioned on the right side. In other words, the left front sloping portion 40b is slanted so as to be located downward as it is separated from the front interference preventing portion 40c.

The right front inclined portion 40d is plate-shaped, connects to the left end of the right bracket attachment portion 40e, and extends leftward from this connection portion. The right front inclined portion 40d is inclined with respect to the floor F so as to be positioned upward as it is positioned to the left. In other words, the right front sloped portion 40d slopes downward with increasing distance from the front interference prevention portion 40c.

The front interference prevention portion 40c has a vertically long plate shape, and extends horizontally with its longitudinal direction aligned with the width direction. The front interference prevention portion 40 c is positioned above the lower surfaces of the pair of fixed rails 11 . The left end of the front interference prevention portion 40c is connected to the right end of the left front inclined portion 40b. The right end of the front interference prevention portion 40c is connected to the left end of the right front inclined portion 40d.

With such a configuration, a front recessed portion 40 f recessed upward is formed between the pair of fixed rails 11 in the width direction of the bracket mounting member 40 . The front concave portion 40f is composed of a front interference prevention portion 40c, a left front inclined portion 40b, and a right front inclined portion 40d.

As shown in FIG. 2, the left bracket mounting portion 40a and the right bracket mounting portion 40e, which are both ends of the bracket mounting member 40 in the width direction, protrude to the outside of the pair of slide mechanisms 10 in the width direction. A front bracket 60 is attached by welding to the lower surface of each of the left end of the left bracket mounting portion 40a and the right end of the right bracket mounting portion 40e.

As shown in FIGS. 1 and 4, the front bracket 60 has a plate-like shape with a central portion bent in the front-rear direction, and includes a mounting portion 60a and a bolt mounting portion 60b. The attached portion 60a extends horizontally in parallel with the floor F, and its upper surface is attached to the lower surfaces of the left bracket attaching portion 40a and the right bracket attaching portion 40e by welding.

The bolt mounting portion 60b is inclined downward as it is positioned forwardly with respect to the mounting portion 60a. The bolt attachment portion 60b extends in a direction coinciding with the formation direction of the floor inclined portion F1 shown in FIG. The floor inclined portion F1 is formed in front of the floor F, and is inclined downward as it is positioned forwardly with respect to the floor F. As shown in FIG. As shown in FIGS. 1 and 5, a bolt hole 60c is formed in the bolt mounting portion 60b. As shown in FIG. 4, a bolt B is inserted through the bolt hole 60c, and this bolt B is screwed into a screw hole FH formed in the floor slope portion F1 so that the front portion of the seat rail 100 is attached to the floor slope portion F1. fixed to

As shown in FIGS. 1 and 5, the front seat mounting member 20 is a member formed by bending a vertically long plate. From left to right, the front seat mounting member 20 includes a left front seat mounting portion 20a, a left relief portion 20b, a left vertical portion 20c, a transverse portion 20d, a right vertical portion 20e, a right relief portion 20f, and a right front seat mounting portion. It consists of 20g.

As shown in FIG. 1, the crossing portion 20d is in the shape of a vertically long plate, and extends horizontally parallel to the floor F with its longitudinal direction coinciding with the width direction. The lower surfaces of both end portions of the crossing portion 20d are attached by welding to positions slightly rearward of the front end portions of the upper surface portions 12a of the pair of movable rails 12. As shown in FIG. With such a configuration, the pair of movable rails 12 are connected by the transverse portion 20d of the front seat mounting member 20. As shown in FIG. Both ends of the crossing portion 20d are connected to the upper ends of the left vertical portion 20c and the right vertical portion 20e, respectively.

The left vertical portion 20c has a plate shape, and its upper end is connected to the left end of the transverse portion 20d, and its lower end is connected to the left relief portion 20b. The left vertical portion 20c extends vertically upward from a connection portion with the left relief portion 20b. In other words, the left vertical portion 20c extends in a plane including the front-rear direction and the up-down direction. The right side surface of the left vertical portion 20c faces and is close to the outer surface portion 12b of the movable rail 12 .

The left relief portion 20b is plate-shaped, and its right end is connected to the lower end of the left vertical portion 20c. The left relief portion 20b extends in a direction orthogonal to the left vertical portion 20c. That is, the left relief portion 20b extends horizontally parallel to the floor F. As shown in FIG. The left relief portion 20b attaches the left front seat attachment portion 20a to the movable rail 12 via the left vertical portion 20c and the transverse portion 20d.

The left front seat attachment portion 20a is plate-shaped, and its lower end is connected to the left end of the left relief portion 20b. The left front seat attachment portion 20a extends in a direction orthogonal to the left relief portion 20b. That is, the left front seat mounting portion 20a extends in the vertical direction perpendicular to the floor F, and extends in a plane including the front-back direction and the up-down direction. A front portion of the seat cushion 501 is attached to the left front seat attachment portion 20a and the right front seat attachment portion 20g via a front attachment portion 504c and side frames 504a shown in FIG. 8, respectively.

As shown in FIGS. 1 and 4, a plurality of mounting holes 20h and 20i are formed in the left front seat mounting portion 20a. In this embodiment, two attachment holes 20h and 20i are formed side by side in the front-rear direction in the left front seat attachment portion 20a.

As shown in FIGS. 1 and 5, the right vertical portion 20e has a plate-like shape, its upper end is connected to the right end of the crossing portion 20d, and its lower end is connected to the right relief portion 20f. The right vertical portion 20e extends vertically upward from the connecting portion with the right relief portion 20f. In other words, the right vertical portion 20e extends in a plane including the front-back direction and the up-down direction. The left side surface of the right vertical portion 20 e faces and is close to the outer surface portion 12 b of the movable rail 12 .

The right relief portion 20f is plate-shaped, and its left end is connected to the lower end of the right vertical portion 20e. The right relief portion 20f extends in a direction orthogonal to the right vertical portion 20e. That is, the right relief portion 20f extends horizontally parallel to the floor F. As shown in FIG. The right relief portion 20f attaches the right front seat attachment portion 20g to the movable rail 12 via the right vertical portion 20e and the transverse portion 20d.

The right front seat attachment portion 20g is plate-shaped, and its lower end is connected to the left end of the right relief portion 20f. The right front seat attachment portion 20g extends in a vertical direction orthogonal to the right relief portion 20f. That is, the right front seat attachment portion 20g extends in a direction perpendicular to the floor F, and extends in a plane including the front-back direction and the up-down direction.

As shown in FIG. 1, a plurality of mounting holes 20h and 20i are formed in the right front seat mounting portion 20g. In this embodiment, two mounting holes 20h and 20i are formed side by side in the front-rear direction in the right front seat mounting portion 20g.

As shown in FIG. 1 , the rear seat mounting member 30 is mounted on the upper surfaces of the rear ends of the pair of movable rails 12 . The rear seat mounting member 30 is a member formed by bending a vertically long plate. From left to right, the rear seat mounting member 30 includes a left rear seat mounting portion 30a, a left horizontal portion 30b, a left rear inclined portion 30c, a rear interference prevention portion 30d, a right rear inclined portion 30e, and a right side. It is composed of a horizontal portion 30f and a right rear seat mounting portion 30g. The rear seat attachment member 30 is attached to the rear portion of the pair of movable rails 12 by welding.

As shown in FIG. 1, the rear interference prevention portion 30d has a vertically long plate shape, and extends horizontally parallel to the floor F with its longitudinal direction aligned with the width direction. The rear interference prevention portion 30 d is positioned below the upper surfaces of the left horizontal portion 30 b, the right horizontal portion 30 f, and the movable rail 12 .

The left rear inclined portion 30c is plate-shaped, connects to the left end of the rear interference prevention portion 30d, and extends leftward from the connection portion with the rear interference prevention portion 30d. The left rear sloping portion 30c is slanted with respect to the floor F so that the left rear sloping portion 30c is positioned upward (as it is separated from the rear interference prevention portion 30d).

The left horizontal portion 30b has a vertically long plate-like shape, and extends horizontally parallel to the floor F with its longitudinal direction aligned with the width direction. The left horizontal portion 30b is connected to the left end of the left rear inclined portion 30c and extends leftward from the connection portion with the left rear inclined portion 30c. The lower surface of the left horizontal portion 30b is attached to the upper surface portion 12a of the left movable rail 12 by welding. The left end of the left horizontal portion 30b is connected to the upper end of the left rear seat mounting portion 30a.

The left rear seat mounting portion 30a is plate-shaped, and its upper end is connected to the left end of the left horizontal portion 30b. The left rear seat mounting portion 30a extends downward from a connection portion with the left horizontal portion 30b in a direction orthogonal to the left horizontal portion 30b. That is, the left rear seat mounting portion 30a extends in the vertical direction orthogonal to the floor F, and extends in a plane including the front-back direction and the up-down direction. A mounting hole 30h is formed in the left rear seat mounting portion 30a. The left rear seat mounting portion 30 a has a portion positioned below the upper surface of the movable rail 12 . The mounting holes 30 h are located below the upper surface of the movable rail 12 .

The left rear seat attachment portion 30a and the right rear seat attachment portion 30g are attached to the rear portion of the seat cushion 501 via a rear attachment portion 504e and side frames 504a shown in FIG.

As shown in FIG. 1, the right rear inclined portion 30e is plate-shaped, connects to the right end of the rear interference prevention portion 30d, and extends rightward from the connection portion with the rear interference prevention portion 30d. ing. The right rear inclined portion 30e is inclined with respect to the floor F so as to be positioned higher toward the right side (as farther away from the rear interference prevention portion 30d).

The right horizontal portion 30f has a vertically long plate shape, and extends horizontally parallel to the floor F with its longitudinal direction aligned with the width direction. The right horizontal portion 30f is connected to the right end of the right rear inclined portion 30e and extends rightward from the connection portion with the right rear inclined portion 30e. The lower surface of the right horizontal portion 30f is attached to the upper surface portion 12a of the right movable rail 12 by welding. The right end of the right horizontal portion 30f is connected to the upper end of the right rear seat mounting portion 30g.

The right rear seat mounting portion 30g is plate-shaped, and its upper end is connected to the right end of the right horizontal portion 30f. The right rear seat mounting portion 30g extends downward from a connection portion with the right horizontal portion 30f in a direction orthogonal to the right horizontal portion 30f. That is, the right rear seat mounting portion 30g extends in a vertical direction perpendicular to the floor F, and extends in a plane including the front-back direction and the up-down direction. A mounting hole 30i is formed in the right rear seat mounting portion 30g. The right rear seat mounting portion 30g has a portion positioned below the upper surface of the movable rail 12. As shown in FIG. The mounting holes 30 h are located below the upper surface of the movable rail 12 .

A connecting portion 30j connecting the left horizontal portion 30b and the right horizontal portion 30f is formed from the left rear inclined portion 30c, the rear interference prevention portion 30d, and the right rear inclined portion 30e. A rear recessed portion 30k recessed downward is formed from the left rear sloped portion 30c, the rear interference prevention portion 30d, and the right rear sloped portion 30e.

As shown in FIGS. 1 and 3, the rear bracket 70 has a vertically long plate shape and is attached to the rear portion of the bottom surface portion 11a, which is the lower surface of the fixed rail 11, by welding. The rear side brackets 70 are arranged so as to be positioned outward in the width direction as they are positioned rearward. A mounting hole 70 a is formed in the rear end portion of the rear bracket 70 . As shown in FIG. 7A, the upper opening of the mounting hole 70a is formed with a head accommodating portion 70b having a larger inner diameter than the lower opening. In this embodiment, the head housing portion 70b is a truncated cone-shaped space whose inner diameter increases as it is positioned upward.

FIG. 7B is a cross-sectional view taken along the line AA in FIG. 2 showing a state in which the seat rail 100 is attached to the floor F and the movable rail 12 is slid rearward. As shown in FIG. 7B and FIG. 4, a bolt B is inserted through the mounting hole 70a, and this bolt B is screwed into a screw hole FB formed in the floor F so that the rear portion of the seat rail 100 is secured. Fixed to floor F.

In this embodiment, the bolt B is a countersunk bolt having a truncated cone-shaped head B1. As shown in FIG. 7B, the head B1 of the bolt B is completely housed in the head housing portion 70b of the mounting hole 70a and is not exposed from the upper surface of the rear bracket 70. As shown in FIG. Therefore, even when the movable rail 12 is slid rearward, the head portion B1 of the bolt B does not interfere with the left rear seat mounting portion 30a or the right rear seat mounting portion 30g.

As shown in FIGS. 1 and 3, the reinforcing member 50 has a vertically long plate-like shape, and is arranged so that its longitudinal direction coincides with its width direction. Both ends of the reinforcing member 50 are attached to the front ends of the pair of rear brackets 70 by welding. The reinforcing member 50 couples the rear ends of the pair of movable rails 12 via the pair of rear brackets 70 .

(Description of the seat attached to the seat rail of this embodiment)
Next, the seat 500 attached to the seat rail 100 of this embodiment will be described with reference to FIGS. 8 and 9. FIG. As shown in FIG. 8, the seat 500 has a seat cushion 501 , a seat back 502 , an adjuster mechanism 503 and a base member 504 .

The seat cushion 501 is a member on which the passenger sits. The seat back 502 is a member that supports the back of the passenger. The seat cushion 501 and the seat back 502 are composed of a frame, a flexible member such as urethane foam attached to the frame, and a skin member made of cloth or leather covering the surface of the flexible member. .

The adjuster mechanism 503 is a mechanism that swingably attaches the lower portion of the seat back 502 to the rear portion of the seat cushion 501 . The adjuster mechanism 503 has an operation portion 503a. The occupant can adjust the angle of the seat back 502 with respect to the seat cushion 501 by operating the operation portion 503a.

The base member 504 is a metal member attached to the back surface of the seat cushion 501 and is a member that attaches the seat 500 to the seat rails 100 . As shown in FIG. 9A, the base member 504 is composed of a pair of side frames 504a, a plurality of frame connection members 504b, a pair of front support members 504g, two belt support members 504i, and a belt member 504k. ing.

The side frame 504a is formed by press-molding a plate-like member. The pair of side frames 504a are arranged along the front-rear direction so as to face each other. As shown in FIG. 8, a front mounting portion 504c projecting downward is formed in front of the side frame 504a. Two mounting screw holes 504d are formed in the front mounting portion 504c. A rear attachment portion 504e protruding downward is formed at the rear of the side frame 504a. One mounting screw hole 504f is formed in the rear mounting portion 504e.

The front support member 504g is formed by pressing a plate-like member. Each of the pair of front side support members 504g is connected to the inside of the front portion of the pair of side frames 504a and extends forward from this connection portion. The front support member 504g is press-formed to form a rib 504h extending in the horizontal direction.

The frame connection member 504b is pipe-shaped or plate-shaped, and is arranged along the left-right direction. Both ends of the frame connecting members 504b are attached to the inside of the pair of side frames 504a by welding to connect the pair of side frames 504a.

The belt support member 504i has a pipe shape in this embodiment and is arranged along the left-right direction. The belt support member 504i is attached by welding to the inside of the front portions of the pair of front support members 504g, and connects the front portions of the pair of front support members 504g. In addition, the belt support member 504i is attached by welding to the inside of the rear portions of the pair of side frames 504a, and connects the rear portions of the pair of side frames 504a.

The belt member 504k is a belt-shaped member, one end of which is wound around the front belt support member 504i, and the other end of which is wound around the front belt support member 504i. The belt member 504k is a member that supports the lower surface of the seat cushion 501, and prevents excessive deformation of the seat cushion 501 downward when the user sits on the seat cushion 501. As shown in FIG.

(How to attach the seat to the seat rail)
A method of attaching the seat 500 to the seat rails 100 of this embodiment will be described below. As shown in FIG. 9B, before attaching the seat 500 to the seat rails 100, the frame connection member 504b is removed to prevent interference with the seat rails 100. As shown in FIG.

Next, as shown in FIG. 10, the pair of front support members 504g are arranged inside the left front seat mounting portion 20a and the right front seat mounting portion 20g, and the positions of the two mounting screw holes 504d are mounted. Align with the holes 20h and 20i and screw the bolts B5 into the mounting holes 20h and 20i. Also, the position of the mounting screw hole 504f is aligned with the mounting hole 30h, and the bolt B5 is screwed into the mounting screw hole 504f. The seat 500 is attached to the seat rails 100 in this way.

(Effect of the seat rail of this embodiment)
The effects of the seat rail 100 of this embodiment will be described below.
As shown in FIG. 1, the left relief portion 20b and the right relief portion 20f are connected to the lower ends of the left front seat attachment portion 20a and the right front seat attachment portion 20g, respectively. The left side relief portion 20b and the right side relief portion 20f extend in the width direction at a position below the upper end portion of the movable rail 12, and the left front seat mounting portion 20a and the right front seat mounting portion 20g are provided as a pair. They are attached to movable rails 12 respectively. Therefore, the left front seat attachment portion 20 a and the right front seat attachment portion 20 g to which the front portion of the seat cushion 501 is attached can be positioned below the upper end portion of the movable rail 12 . As a result, as shown in FIG. 10, the front portion of the seat cushion 501 can be positioned further downward, and thus the seat 500 can be attached to the floor F of the vehicle at a lower position.

As shown in FIG. 1, a pair of movable rails 12 are joined by a transverse portion 20d. Therefore, the rigidity of the seat rails 100 can be improved, and rattling of the seat 500 attached to the seat rails 100 can be suppressed.

Further, since the left relief portion 20b and the right relief portion 20f are attached to the movable rail 12 via the left vertical portion 20c or the right vertical portion 20e and the transverse portion 20d, respectively, the left relief portion 20b and the right relief portion 20f are attached directly to the movable rail 12 by welding, the left relief portion 20b and the right relief portion 20f can be prevented from coming off the movable rail 12. As shown in FIG. That is, when the occupant sits on the seat 500 and a downward force acts on the left relief portion 20b and the right relief portion 20f, the left vertical portion 20c or the right side vertical portion 20c to which the left relief portion 20b and the right relief portion 20f are connected or the right relief portion 20f is connected. A downward force acts on the transverse portion 20d through the vertical portion 20e, but since the transverse portion 20d is mounted on and supported by the movable rail 12, the left relief portion 20b and the right relief portion 20f are aligned. Peeling off from the movable rail 12 can be prevented.

As shown in FIG. 1, since the left rear seat mounting portion 30a and the right rear seat mounting portion 30g have portions positioned below the upper surface of the movable rail 12, the mounting holes 30h and 30i are It can be formed in the left rear seat mounting portion 30a and the right rear seat mounting portion 30g located below the upper surface of the movable rail 12. As shown in FIG. Therefore, as shown in FIG. 10, the rear portion of the seat cushion 501 can be positioned further downward, and thus the seat 500 can be attached to the floor F of the vehicle at a lower position.

As shown in FIG. 1, the connecting portion 30j connects the left horizontal portion 30b and the right horizontal portion 30f. Therefore, the rear portions of the pair of movable rails 12 are connected by the left horizontal portion 30b, the connecting portion 30j, and the right horizontal portion 30f. As a result, the rigidity of the seat rails 100 can be improved, and the rattling of the seat 500 attached to the seat rails 100 can be suppressed.

Further, as shown in FIG. 1, a rear recessed portion 30k recessed downward is formed in the connection portion 30j. Therefore, it is possible to prevent the bottom surface of the seat cushion 501 from coming into contact with the connecting portion 30j, and it is possible to prevent deterioration of the cushioning property of the seat cushion 501.

As shown in FIG. 1, the left rear slanted portion 30c and the right rear slanted portion 30e are slanted upward with distance from the rear interference prevention portion 30d. Therefore, the rigidity of the rear seat mounting member 30 can be increased compared to a configuration in which a member connecting the rear interference prevention portion 30d and the left horizontal portion 30b or the right horizontal portion 30f extends in the vertical direction. can. Therefore, the rigidity of the seat rails 100 can be improved, and rattling of the seat 500 attached to the seat rails 100 can be suppressed.

As shown in FIG. 1, the front portions of the pair of fixed rails 11 are connected by bracket mounting members 40 . Therefore, the rigidity of the seat rails 100 can be improved, and rattling of the seat 500 attached to the seat rails 100 can be suppressed.

In addition, the bracket mounting member 40 is formed with a front recessed portion 40f recessed upward at a position between the pair of fixed rails 11. As shown in FIG. Therefore, as shown in FIG. 5, by arranging the harness H on the floor F below the front recessed portion 40f, interference between the harness H and the bracket mounting member 40 can be prevented. As a result, interference between the harness H and the bracket mounting member 40 can be prevented even if the position of the bolt hole 60c formed in the front bracket 60 is positioned closer to the bracket mounting member 40 side. Therefore, by locating the bolt hole 60c formed in the front bracket 60 closer to the bracket mounting member 40, the front portion of the seat rail 100 can be brought closer to the floor F, and the seat rail 100 can be positioned even lower. It is possible to attach the seat 500 to the floor F of the vehicle in position. The harness H described above electrically connects the seat belt attachment/detachment detection sensor of the seat 500 and the ECU of the vehicle, and is covered with a corrugated tube.

As shown in FIG. 1, the left front sloping portion 40b and the right front sloping portion 40d are slanted downward as they move away from the front interference preventing portion 40c. The rigidity of the bracket attachment member 40 can be increased as compared with the case where the ridge extends in the vertical direction. Therefore, the rigidity of the seat rails 100 can be improved, and rattling of the seat 500 attached to the seat rails 100 can be suppressed.

As shown in FIG. 1 and FIG. 7A, the upper opening of the mounting hole 70a is formed with a head accommodating portion 70b having a larger inner diameter than the lower side of the mounting hole 70a. Therefore, as shown in FIG. 7B, the head B1 of the bolt B, which is inserted into the mounting hole 70a and screwed into the threaded hole FB formed in the floor F, can be housed in the head housing portion 70b. , the head B1 of the bolt B can be prevented from being exposed from the upper surface of the rear bracket. As a result, as shown in FIG. 7B, when the movable rail 12 is slid rearward with respect to the fixed rail 11, the bolts B of the left rear seat mounting portion 30a and the right rear seat mounting portion 30g are displaced. Interference with head B1 can be prevented. Therefore, the lower ends of the left rear seat mounting portion 30a and the right rear seat mounting portion 30g can be positioned closer to the rear bracket 70 and positioned lower, and the rear portion of the seat cushion 501 can be positioned further lower. and the seat 500 can be attached to the floor F of the vehicle at a lower position.

As shown in FIG. 2, the floor on the front side of the slide mechanism 10 on the right side is formed with a raised portion F3 that rises higher than other portions. A catalyst (not shown) is arranged below the raised portion F3.
As shown in FIG. 2, the right member 83 of the handle lever 80 is inclined so as to be positioned toward the center in the left-right direction as it is positioned forward. Therefore, as shown in FIG. 2, interference between the raised portion F3 and the right member 83 can be prevented. Therefore, even if the position of the bolt hole 60c formed in the front side bracket 60 is positioned closer to the bracket mounting member 40 side, interference between the raised portion F3 and the right side member 83 of the handle lever 80 can be prevented. . Therefore, the position of the bolt hole 60c formed in the front bracket 60 can be positioned closer to the bracket mounting member 40 side, and the position of the front portion of the seat rail 100 can be brought closer to the floor F. It becomes possible to attach the seat 500 to the floor F of the vehicle at a low position.

Before attaching the seat 500 to the seat rail 100, the frame connection member 504b is removed from the seat 500 as shown in FIG. 9B. Therefore, the frame connecting member 504b can be prevented from interfering with the front seat mounting member 20, the rear seat mounting member 30, and the movable rails 12. FIG. Therefore, even if the front seat mounting portions 20a, 20g and the rear seat mounting portions 30a, 30g are positioned at a lower position, the frame connection member 504b does not allow the front seat mounting member 20, the rear seat mounting member 30, Interference with the movable rail 12 can be prevented. Therefore, by positioning the front seat mounting portions 20a, 20g and the rear seat mounting portions 30a, 30g at lower positions, the seat 500 can be mounted at a lower position on the floor F of the vehicle.

In addition, since the seat rail 100 has the pair of movable rails 12 connected by the crossing portion 20d, even if the frame connection member 504b connecting the pair of side frames 504a is removed, the seat 500 attached to the seat rail 100 remains unchanged. decrease in rigidity is prevented.

As shown in FIG. 11, when using the seat rail 100 of the present embodiment, the seat can be attached to the floor F at a position 20 to 45 mm lower than the seat rail 900 of the related art. This is because, as described above, in the seat rail 100 of this embodiment, the front seat mounting portions 20a, 20g and the rear seat mounting portions 30a, 30g are positioned lower than the upper end of the movable rail 12. In contrast, in the conventional seat rail 900 , the front seat mounting portion 901 and the rear seat mounting portion 902 are positioned higher than the upper ends of the movable rails 903 .

(Other embodiments)
In the embodiment described above, the right member 83 extends toward the left front side and is inclined toward the center side in the left-right direction as it is positioned further forward. An embodiment in which the left member 81 extends toward the right front side and is inclined so as to be positioned toward the center side in the left-right direction as it is positioned further forward may be employed. Alternatively, an embodiment in which both the right member 83 and the left member 81 are inclined so as to be positioned toward the center in the left-right direction as they are positioned forward may be used.

Each member constituting the seat rail 100 of the present embodiment is fixed by welding, but may be fixed by screwing or adhesion.

11: fixed rail 12: movable rail 20: front side seat mounting member 20a: left front side seat mounting portion (front side seat mounting portion)
20b: left relief (relief)
20f: right relief (relief)
20g: right front seat mounting portion (front seat mounting portion)
30: Rear seat mounting member 30a: Left rear seat mounting portion (rear seat mounting portion)
30g: right rear seat mounting portion (rear seat mounting portion)
100: Seat rail

Claims (8)

a pair of fixed rails (11) arranged along the front-rear direction and spaced apart from each other;
a pair of movable rails (12) slidably attached to each of the pair of fixed rails;
A pair of front seat mounting portions (20a, 20g) extending in the vertical direction to which a front portion of a seat cushion of the seat is mounted is formed, and a front side seat mounting member (20) is mounted to the front portions of the pair of movable rails. When,
a pair of rear seat mounting portions (30a, 30g) extending in the vertical direction to which the rear portion of the seat cushion is mounted; and a rear seat mounting member (30) mounted to the rear portion of the pair of movable rails. a seat rail (100) having:
The front seat mounting member is connected to the lower ends of the pair of front seat mounting portions, extends in the width direction at a position below the upper end portion of the movable rail, and extends in the width direction of each of the pair of front seat mounting portions. to each of the pair of movable rails. The front seat mounting member includes:
a pair of vertical portions (20c, 20e) whose lower ends are connected to the ends of the pair of relief portions and extend vertically upward from the connecting portions;
A crossing portion (20d) whose both ends are connected to the upper ends of the pair of vertical portions, whose lower surface is attached to the upper surface of the pair of movable rails, and which joins the pair of movable rails. Item 1. The seat rail according to item 1. The rear seat mounting members are connected to the upper ends of the pair of rear seat mounting portions, extend in the width direction, and are attached to the upper surfaces of the rear portions of the pair of movable rails. ), and
3. The seat rail according to claim 1, wherein the rear seat mounting portion has a portion located below an upper surface of the movable rail. The rear seat mounting member further has a connecting portion (30j) having both ends connected to the pair of horizontal portions and connecting the pair of horizontal portions,
The seat rail according to any one of claims 1 to 3, wherein the connecting portion is formed with a rear recessed portion (30k) recessed downward. a bracket attachment member (40) extending in the width direction, attached to the lower surface of the front part of the pair of fixed rails, and coupling the pair of fixed rails;
a front bracket (60) attached to both ends of the bracket attachment member and formed with a bolt hole (60c);
The bracket mounting member is formed with a front side concave portion (40f) concaved upward at a position between the pair of fixed rails. Seat rails described in . further comprising a pair of rear brackets (70) attached to the lower surfaces of the rear portions of the pair of fixed rails and formed with mounting holes (70a);
A head accommodating portion (70b) having a larger inner diameter than that of the lower side of the mounting hole is formed in the upper opening of the mounting hole. The seat rail according to item 1. A pair of lock mechanisms (13) for switching between a locked state in which the pair of movable rails cannot slide with respect to the pair of fixed rails and a released state in which the pair of movable rails can slide with respect to the pair of fixed rails. When,
a handle lever (80) attached to the pair of lock mechanisms,
The handle lever has a pair of side members (81, 83, 84) attached to the pair of lock mechanisms and extending forward of the lock mechanism, and both ends of the handle lever are attached to the front ends of the pair of side members. and a connecting member (82) connected to connect the front ends of the pair of side members,
At least one of the pair of side members is inclined toward the center in the left-right direction as it moves forward. seat rails. A seat attachment method for attaching a seat (500) to a seat rail (100), comprising:
The seat comprises a seat cushion (501), a seat back (502) pivotably attached to the rear part of the seat cushion, and a base member (504) attached to the back surface of the seat cushion,
The base member includes a pair of side frames (504a) arranged along the front-rear direction and opposed to each other and having mounting portions (504c, 504e) formed at the front and rear portions, and the pair of side frames (504a) at both ends. A frame connection member (504b) attached to the inside of the side frame of and connecting the pair of side frames,
The seat rail is
a pair of fixed rails (11) arranged along the front-rear direction and spaced apart;
a pair of movable rails (12) slidably attached to each of the pair of fixed rails;
A pair of front seat mounting portions (20a, 20g) extending in the vertical direction to which the front side of the two mounting portions is mounted; and upper ends of the movable rails connected to respective lower ends of the pair of front seat mounting portions. A pair of relief portions (20b, 20f) extending in the width direction at a lower position than the lower end of the pair of relief portions connects to the ends of the pair of relief portions, and extends vertically upward from the connecting portion. a pair of vertical parts (20c, 20e) connected to each other, and a transverse part (20d) whose both ends are connected to the upper ends of the pair of vertical parts and whose lower surface is attached to the upper surface of the pair of movable rails to connect the pair of movable rails. ), a front seat mounting member (20) comprising
A pair of rear seat mounting portions (30a, 30g) extending in the vertical direction to which the rear side of the two mounting portions is mounted are formed, and are attached to the rear portions of the pair of movable rails to support the pair of movable rails. a mating rear seat attachment member (30);
A method for attaching a seat to a seat rail, comprising removing the frame connection member from the seat before attaching the seat to the seat rail.

Images