JP7415125B2 - Slide rail device and vehicle seat - Google Patents

Description

The present invention relates to a slide rail device and a vehicle seat, and more particularly to a slide rail device that adjusts the position of a seat by sliding it relative to a vehicle floor, and a vehicle seat equipped with the slide rail device.

Some slide rail devices use lead screws and nuts to slide the seat and adjust its front and rear positions. For example, Patent Document 1 discloses a seat rail device (slide rail device) that includes a locking mechanism section that includes a slide screw (lead screw) that is screwed into a nut that is attached to the lower rail and rotatably attached to the upper rail. Disclosed.

Japanese Patent Application Publication No. 2006-218997

As shown in Patent Document 1, in the case of a slide rail device that slides a seat using a lead screw, it is necessary to lengthen the lead screw in order to increase the sliding distance of the seat. For example, if the seat has a long sliding distance, such as a power long rail, the lead screw will also be longer. Therefore, compared to a lead screw of normal length, the lead screw tends to bend downward at the center and the amount of bending becomes large. Then, if the lead screw is bent, there is a risk that noise due to rotation will increase. Furthermore, the bending may impede the smooth movement of the sheet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a slide rail device in which deflection of the lead screw is suppressed, and to prevent noise caused by deflection or smooth movement of the upper rail. The purpose is to suppress inhibition.

The problem is a slide rail device for a vehicle that slidably guides a seat part with respect to a car body floor, which includes a lower rail fixed to the car body floor and extending in the sliding direction of the seat part, and a slide rail device that is slidably guided on the lower rail. an upper rail that is supported and connected to the seat portion; a lead screw that extends inside the lower rail along the lower rail and slides the upper rail by rotating while being threadedly engaged with the upper rail; A holding part that holds the lead screw at each of both ends, and a support member that abuts the lower rail and supports the lead screw between the holding part and the upper rail , the support member A plurality of support members are provided, and each of the plurality of support members is connected to another support member in the sliding direction by a first connection member, and the support member is located closest to each of the front end and rear end of the upper rail. The invention is solved by a slide rail device characterized in that the member is connected to the upper rail by a second connecting member .
Since the slide rail device includes a support member that supports the lead screw, deflection of the lead screw is suppressed, thereby suppressing generation of noise or obstruction of smooth movement of the upper rail.
Further, by providing a plurality of support members, the lead screw can be made more difficult to bend. Moreover, since the support member is connected to the first connection member, the support member can move in conjunction with other support members.
Since the support member closest to the upper rail is connected to the upper rail by the second connection member, the support member can follow the movement of the upper rail, thereby making it possible to arrange the support member at an appropriate position. .

In the above configuration, it is preferable that the support member is configured to be movable along the lower rail depending on the position of the upper rail.
Since the support member is movable depending on the position of the upper rail, the lead screw can be appropriately supported by arranging the support member at an appropriate position.

In the above configuration, it is preferable that the support member located closest to each of the front end and the rear end of the upper rail is threadedly engaged with the lead screw.
Since the support member and the lead screw are screwed together, the support member can be moved in the same manner as the upper rail by rotation of the lead screw, thereby allowing the support member to be placed in an appropriate position.

In the above configuration, it is preferable that the first connecting member and the second connecting member are formed of elastic members.
By forming the first connecting member and the second connecting member from elastic members, the supporting members can be arranged at regular intervals, and deflection can be efficiently suppressed.

In the above configuration, it is preferable that the first connecting member and the second connecting member are formed of a plate material in which a long hole is formed.
By forming the first connecting member and the second connecting member from plate materials in which elongated holes are formed, the supporting members can be arranged at regular intervals, and deflection can be efficiently suppressed.

In the above configuration, it is preferable that the upper surface of the support member is located below the upper surface of the upper rail.
By positioning the upper surface of the support member below the upper surface of the upper rail, the height of the support member can be kept low, and the weight of the support member can be reduced.

In the above configuration, it is preferable that the support member is made of resin.
By forming the support member from resin, it is possible to make the support member lighter than, for example, when the support member is formed from metal.

In the above configuration, it is preferable that a through hole is formed in the support member, and that the lead screw is supported by the support member through the through hole.
By passing the lead screw through the through hole of the support member, it is possible to suppress not only downward deflection but also lateral deflection (width direction).

The vehicle seat preferably includes a slide rail device having the above-described configuration and a seat portion connected to the slide rail device.
By providing the vehicle seat with the slide rail device configured as described above, it is possible to provide a vehicle seat in which deflection of the lead screw is suppressed.

Since the slide rail device includes a support member that supports the lead screw, deflection of the lead screw is suppressed, thereby suppressing generation of noise or interference with smooth movement of the seat portion.
Further, since the support member is movable depending on the position of the upper rail, the lead screw can be appropriately supported by arranging the support member at an appropriate position.
Further, by providing a plurality of support members, the lead screw can be made more difficult to bend. Moreover, since the support member is connected to the first connection member, the support member can move in conjunction with other support members.
Furthermore, since the support member closest to the upper rail is connected to the upper rail by the second connection member, the support member can follow the movement of the upper rail, thereby making it possible to arrange the support member at an appropriate position. I can do it.
Further, since the support member and the lead screw are screwed together, the support member can follow the movement of the upper rail, and thereby the support member can be placed at an appropriate position.
Moreover, by forming the first connecting member and the second connecting member from elastic members, the supporting members can be arranged at regular intervals, and deflection can be efficiently suppressed.
Moreover, by forming the first connecting member and the second connecting member from a plate material in which elongated holes are formed, the supporting members can be arranged at regular intervals, and deflection can be efficiently suppressed.
Further, since the upper surface of the supporting member is located below the upper surface of the upper rail, the height of the supporting member can be kept low, and the weight of the supporting member can be reduced.
Furthermore, by forming the support member from resin, the weight can be reduced compared to, for example, a case where the support member is formed from metal.
Furthermore, by passing the lead screw through the through hole of the support member, it is possible to suppress not only downward deflection but also lateral deflection (width direction).
Further, by providing the vehicle seat with the slide rail device having the above-described configuration, it is possible to provide a vehicle seat in which deflection of the lead screw is suppressed.

FIG. 1 is a perspective view showing the appearance of a vehicle seat including a slide rail device according to the present embodiment. FIG. 2 is a perspective view showing a frame of a vehicle seat to which a slide rail device is attached. FIG. 2 is a perspective view showing a slide rail device attached to a vehicle seat. It is a perspective view showing a slide rail device. FIG. 3 is an exploded perspective view of the slide rail device. 4A is a cross-sectional view of the slide rail device taken along line VV in FIG. 4A. FIG. 4A is a cross-sectional view of the slide rail device taken along line VI-VI in FIG. 4A. FIG. FIG. 7 is a cross-sectional view of the slide rail device taken along line VII-VII in FIG. 6, showing a case where the upper rail slides rearward. FIG. 8 is an enlarged cross-sectional view of the slide rail device showing a portion VIII in FIG. 7; FIG. 8 is a cross-sectional view of the slide rail device showing a portion IX in FIG. 7 in an enlarged manner. It is a sectional view of a slide rail device, and is a figure showing a case where an upper rail slides forward. FIG. 3 is a cross-sectional view of a support member that is threaded onto a lead screw. It is a figure which shows another example of a connection member, and is a sectional view of the slide rail which shows the state in which the connection member was connected by the elastic member.

Hereinafter, a slide rail device 30 and a vehicle seat S including the same according to an embodiment of the present invention will be described with reference to FIGS. 1 to 12.
The present embodiment is a slide rail device 30 for a vehicle that adjusts the position of the seat portion S1 by slidably guiding the seat portion S1 with respect to the vehicle body floor F, and is fixed to the vehicle body floor F in the sliding direction of the seat. A slide rail device comprising a lower rail 40 extending in the direction of arrow A in FIG. 1, and an upper rail 50 that is slidably supported by the lower rail 40 and has leg portions 51a and 51b that protrude upward and connect with the seat portion S1. 30 and a vehicle seat S including the slide rail device 30.

As shown in FIG. 1, the vehicle seat S of this embodiment includes a seat back 2, a seat cushion 1 disposed on the front side of the seat back 2, and a headrest 3 disposed on the upper side of the seat back 2. and a pair of slide rail devices 30 capable of slidingly guiding the seat portion S1 in the longitudinal direction of the vehicle with respect to the vehicle body floor F and adjusting its position.

In the following explanation, as shown by the arrows in FIG. The width direction (horizontal direction) of the seat portion S1 of the seat S is defined as the width direction, and the height direction refers to the height direction of the seat portion S1, specifically, the vertical direction of the seat portion S1 when the vehicle seat S is viewed from the front. means direction.

The slide rail device 30 is used while being buried in the vehicle body floor F. The vehicle body floor F is formed with an opening that extends along the sliding direction of the seat portion S1 and through which the leg portions 51a and 51b (see FIG. 3) of the upper rail 50 pass. A protective cover (not shown) is arranged around the opening to close the gap between the legs 51a, 51b and the periphery of the opening.

The seat cushion 1 is a seating portion that supports an occupant from below, and is covered with a skin 1b by placing a cushion pad 1a on a cushion frame 10 serving as a skeleton. The seat back 2 is a backrest portion that supports the back of the occupant from behind, and as shown in FIG. 2, a back pad 2a is placed on a seat back frame 20 serving as a skeleton and covered with an outer skin 2b. The headrest 3 is a head that supports the head of an occupant from behind, and is covered with outer skins 1b and 2b by placing a cushion pad 1a (not shown) on a pillar (not shown) serving as a core material.
The skins 1b and 2b provided on the vehicle seat S are made of a material such as cloth or leather, for example. Further, the cushion pad 1a and the back pad 2a are urethane base materials formed by foam molding using, for example, a urethane foam material.

As shown in FIG. 2, the seat back frame 20 is a substantially rectangular frame made of a metal member, and includes a pair of side frames 25 at both ends in the width direction and an upper end in the height direction. The main components include an upper pipe 26 and a lower frame construction part 28 provided at the lower end. In addition, in this embodiment, the side frame 25, the upper pipe 26, and the lower frame construction part 28 constitute the seat back frame 20 by combining and integrating from a mutually separated state, but from the beginning It may be molded by molding, that is, integrally molded from a resin material. Furthermore, two headrest guides 27 described above are attached to the center of the upper pipe 26 with a space therebetween.

As shown in FIGS. 1 to 3, the slide rail device 30 of the vehicle seat S of this embodiment is a device that guides the seat portion S1 so as to be slidable in the longitudinal direction of the vehicle with respect to the vehicle body floor F. be. Since the structures of the pair of slide rail devices 30 provided on the left and right sides are similar, the slide rail device 30 provided on the left side will be described below.

A groove extending in the longitudinal direction of the vehicle is formed in the vehicle body floor F, and the slide rail device 30 is embedded in the groove. A protective cover is installed around the opening of the groove so as to close the opening, and legs 51a and 51b of the upper rail 50 that supports the seat portion S1 protrude from between the protective covers (see FIG. 3). ). Note that although the slide rail device 30 of this embodiment is fixed within the vehicle body floor F, the slide rail device 30 may be fixed on the vehicle body floor F.

As shown in FIG. 5, the lower rail 40 is formed in a hollow open cross-sectional shape with an opening 45 on the upper surface, and the opening 45 of the lower rail 40 is arranged along the opening of the groove in the vehicle body floor F. It is formed in a series so as to extend in the front-rear direction (sliding direction).

An upper rail 50 that can be slidably fitted into the lower rail 40 is integrally attached to the lower surface of the seat cushion 1. The upper rail 50 extends in the longitudinal direction (back and forth direction) of the opening 45 of the lower rail 40 with the legs 51a and 51b, which support the seat cushion 1 from below, protruding upward from the opening 45 of the lower rail 40. It is provided so that it can be slid along.

The lower rail 40 of the slide rail device 30 will be explained in detail. As shown in FIGS. 4A to 6, the lower rail 40 has a hollow cross-sectional shape with an opening 45 on the upper surface. The lower rail 40 is formed by bending and forming a metal plate, and has a series of shapes.
On both sides of the bottom part 41 of the lower rail 40 fixed to the groove of the vehicle floor F, side parts 42a and 42b are provided with steps and stand up. Flat plate-like upper surface portions 43a and 43b extending in an overhanging manner are formed. Furthermore, plate-shaped hanging surface portions 44a, 44b are formed to hang down and extend from the inner ends of both upper surface portions 43a, 43b. An opening 45 is formed at a position sandwiched between both the hanging surface parts 44a and 44b. The lower rail 40 is integrally fixed to the vehicle body floor F by a fastening member such as a bolt (not shown). The fastening member is inserted through the opening 45 of the lower rail 40 and fastened using a fastening tool to fix the bottom surface portion 41 and the vehicle body floor F.

Next, the upper rail 50 will be explained. The upper rail 50 is formed in a cross-sectional shape that can be fitted into the hollow interior of the lower rail 40, as shown in FIGS. 5 and 6. In the upper rail 50, leg parts 51a and 51b that support the seat cushion 1 from below, side parts 52a and 52b that are fitted into the hollow interior of the lower rail 40, bottom parts 53a and 53b, and vertical parts 54a and 54b are made of metal. It is formed by folding a plate. The upper rail 50 is formed from two parts, and legs 51a and 51b are fastened together by a fastening member.

From the lower end of the leg portion 51a of the upper rail 50, there is a flat surface portion 51c formed to extend across the opening 45 of the lower rail 40, and at the end thereof, a side surface portion that hangs down and extends along the hanging surface portion 44a of the lower rail 40. 52a is formed. A side surface portion 52b is formed from the lower end of the leg portion 51b of the upper rail 50 and extends to hang down along the hanging surface portion 44b of the lower rail 40. Bottom portions 53a and 53b extending outward from each other are formed from the lower ends of both side portions 52a and 52b. Furthermore, vertical surface portions 54a and 54b rising from both bottom surface portions 53a and 53b are formed from the outer end portions of both bottom surface portions 53a and 53b. These vertical surface portions 54a, 54b are arranged on the outside of the hanging surface portions 4a, 44b of the lower rail 40. That is, the upper rail 50 is assembled such that the hanging surface portions 44a, 44b of the lower rail 40 are sandwiched between the vertical surface portions 54a, 54b and the side surface portions 52a, 52b.

The upper rail 50 is assembled by being inserted in the sliding direction from one open end in the longitudinal direction of the lower rail 40. Thereby, the upper rail 50 is assembled so as not to come off upward from the opening 45 of the lower rail 40.

Further, as shown in FIG. 5, rollers 55a and 55b are attached to the outer sides of the vertical surfaces 54a and 54b of the upper rail 50, respectively. Two of these rollers 55a and 55b are provided at intervals in the longitudinal direction of the upper rail 50, and are grounded on the upper side of the step-shaped bottom portion 41 of the lower rail 40 to allow the upper rail 50 to slide. It facilitates movement.

Further, as shown in FIGS. 4A to 6, in the slide rail device 30, the lead screw 56 for moving the upper rail 50 in the sliding direction is located inside the lower rail 40, and the side portions 52a, 52b of the upper rail 50 are located inside the lower rail 40. is established between. The lead screw 56 extends inside the lower rail 40 and along the lower rail 40 . Further, the upper rail 50 includes a nut 58 that is threadedly engaged with the lead screw 56. The nut 58 is fixed to the flat part 51c of the upper rail 50 by a nut holder 59 using a fastening member such as a bolt.

The lead screw 56 is rotated in the direction of arrow E in FIG. 4B by a drive unit 31 (see FIGS. 1 to 3) including a motor and the like provided between the pair of slide rail devices 30, and is thereby threadedly engaged with the lead screw 56. As the nut 58 moves, the upper rail 50 moves in the sliding direction. Further, the lead screw 56 is rotatably held by screw holding parts 57a and 57b (holding parts) provided at the front end 40a and rear end 40b of the lower rail 40, respectively.

Next, the support members 60 and 70 that support the lead screw 56 will be explained. The support member 60 is provided between the screw holding part 57a located at the front and the upper rail 50 so that the lower end 60c of the support member 60 comes into contact with the bottom surface part 41 of the lower rail 40 to support the lead screw 56. There is.
Further, the support member 70 is provided between the screw holding part 57b located at the rear and the upper rail 50 so that the lower end 70c of the support member 70 comes into contact with the bottom surface part 41 of the lower rail 40 to support the lead screw 56. It is being In this embodiment, four support members 60 and four support members 70 are used, but this is just an example, and depending on the distance between the upper rail 50 and the screw holding parts 57a and 57b, one support member 60 and four support members 70 are used. (or the support member 70). Moreover, you may support using four or more support members 60 and 70. Furthermore, although a plurality of support members 60 and 70 are provided at the front and rear sides of the upper rail 50, the lead screw 56 may be supported by placing the support members 60 and 70 only on either one side.

The support members 60 and 70 are plate-shaped members, and are formed with through holes 60d and 70d through which the lead screw 56 passes. The support members 60 and 70 are configured to be movable along the lower rail 40 depending on the position of the upper rail 50. Specifically, as shown in FIG. 7, when the upper rail 50 is moved to the rear of the lower rail 40, the support is adjusted according to the distance between the upper rail 50 and the screw holding portion 57a located on the front side. Members 60 are spaced a distance D1 apart and support lead screw 56. On the other hand, the space between the holding member 57 on the rear side and the upper rail 50 is the narrowest, and the supporting member 70 supports the lead screw 56 in a state where it is arranged without opening any interval.

Each of the support members 60 and 70 is connected by a first connection member 62 to another support member 60 and 70 located closest in the sliding direction. In this embodiment, the first connecting member 62 is formed as an elongated annular member in which a long hole 62a is formed in a plate material. For example, as shown in FIG. 6, a protrusion 60b is formed on the lower side of the support member 60, and the protrusion 60b is inserted into the elongated hole 62a of the first connecting member 62. As a result, the adjacent support member 60 moves, and the support member 60 connected by the first connection member 62 is pulled and moved.

Further, the support member 61 located closest to the front end of the upper rail 50 is connected by a second connecting member 63 of the upper rail 50. The second connecting member 63, like the first connecting member 62, is formed as an elongated annular member in which a long hole 63a is formed in a plate material. The protrusion 60a provided on the upper side of the support member 61 and the protrusion 59a provided on the front end of the nut holder 59 of the upper rail 50 are inserted into the elongated hole 63a of the second connecting member 63. The support member 61 and the upper rail 50 are connected.

As the upper rail 50 moves rearward, the support member 61 connected by the second connecting member 63 moves rearward. Since the support member 61 is connected to the adjacent support member 60 on the front side by the first connection member 62, when the support member 61 is separated from the support member 60 by a distance D1, which is the length of the first connection member 62. , the support member 60 is pulled by the first connection member 62 and moves rearward. When the support member 60 further moves and leaves the distance D1, the next support member 60 moves. In this way, the first connecting member 62 and the second connecting member 63 allow the supporting members 60 and 61 to be appropriately disposed on the bottom surface portion 41 of the lower rail 40.

Note that when the upper rail 50 moves from the rear to the front, the support members 60 and 61 are pushed by the nut holder 59 of the upper rail 50 and move forward, and eventually the gap is increased as shown in FIG. will be placed without opening it. At this time, the support member 71 closest to the rear of the upper rail 50 is pulled by the second connection member 63. Then, the support member 70 that connects the support member 71 and the first connection member 62 is pulled. When the upper rail 50 reaches the front end of the lower rail 40, the support members 70, 71 will be placed in the proper position.

In addition, in the slide rail device 30 of this embodiment, the upper rail 50 and the support members 61 and 71 were connected by the second connection members 63 and 73. However, as shown in FIG. 11, the support members 61 and 71 located closest to the upper rail 50 may be formed to threadably engage with the lead screw 56. A second connecting member connects the upper rail 50 and the supporting member 61 by screwing together so that the supporting members 61 and 71 move in the sliding direction due to the rotation of the lead screw 56, similar to the nut 58 of the upper rail 50. 63 and 73 can be omitted.
As shown in FIG. 8, the support member 60 located at the farthest position from the upper rail 50 is connected to the screw holding part 57a by the first connecting member 62. The structure is such that the distance between the members 62 is no greater than a distance D1, which is the length of the member 62. The support member 70 located at the farthest position from the upper rail 50 is also configured to be no more than a distance D2, which is the length of the first connection member 72, from the screw holding portion 57b by the first connection member 72. Note that the first connecting members 62, 72 and the second connecting members 63, 73 are formed to have the same length.

Further, in this embodiment, an annular plate material in which a long hole 62a was formed was used as the first connecting member 62 that connects the supporting members 60, but the first connecting member 62 that connects the supporting members 60 is shown in FIG. An elastic member 65 such as a spring may be used as shown in FIG. Further, the second connecting member 63 that connects the support member 61 closest to the upper rail 50 and the upper rail 50 may also be an elastic member 67 such as a spring. The plurality of elastic members 65 and 67 may have the same elastic modulus. When the upper rail 50 or the support member 61 moves, the support member 60 is pulled by the elastic members 65 and 67, so that when the upper rail 50 reaches the front or rear end of the lower rail 40, it is arranged at equal intervals. become.

Note that the support members 60 and 70 are made of resin, for example, a hard synthetic resin. The synthetic resin may be a heat-resistant material such as polyolefin resin, polystyrene resin, or polypropylene resin. By forming the support members 60 and 70 from resin, they are lighter in weight than when they are formed from metal members.

Further, the support members 60 and 70 are formed such that the upper surfaces 60e and 70e of the support members 60 and 70 are located below the flat portion 50c of the upper rail 50 (the upper surface of the upper rail 50). Thereby, the height of the support members 60, 70 can be kept low, and the weight of the support members 60, 70 can be reduced.

The support member 60 supports the lead screw 56 by inserting the lead screw 56 into the formed through hole 60d. Thereby, the support member 60 not only supports the lead screw 56 from below and prevents it from bending downward, but also suppresses it from bending upward or in the left and right directions. This is just an example, and the support member 60 may support the lead screw 56 by forming a semicircular notch on its upper surface.

In this embodiment, the slide rail device according to the present invention and a vehicle seat including the same have been mainly described. However, the embodiments described above are merely examples for facilitating understanding of the present invention, and do not limit the present invention. The present invention may be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof. In particular, the shapes, arrangements, and configurations of the first connecting member and the second connecting member that connect the supporting members are merely examples, and do not limit the present invention.
In addition, although the embodiment shows an example in which the slide rail device is attached to the seat portion of a vehicle seat, the slide rail device is provided as a slide rail device that slides the seat portion of not only a vehicle but also a train, a bus, etc. It can also be used for the seats of airplanes and ships.

S Vehicle seat F Vehicle floor S1 Seat part 1 Seat cushion 1a Cushion pad 1b Outer skin 2 Seat back 2a Back pad 2b Outer skin 3 Headrest 10 Cushion frame 20 Seat back frame 25 Side frame 26 Upper pipe 27 Headrest guide 28 Lower frame construction part 30 Slide rail device 31 Drive section 40 Lower rail 40a Front end 40b Rear end 41 Bottom surface 42a, 42b Side surface 43a, 43b Top surface 44a, 44b Drooping surface 45 Opening 50 Upper rail 51a, 51b Leg 51c Flat surface 52a, 52b Side parts 53a, 53b Bottom parts 54a, 54b Vertical parts 55a, 55b Roller 56 Lead screws 57a, 57b Screw holding part (holding part)
58 Nut 59 Nut holder 60, 70 Support member 60a Convex portion 60b Convex portion 60c Lower end 60d Through hole 61, 71 Support member 62, 72 First connecting member 62a, 72a Long hole 63, 73 Second connecting member 63a, 73a Long hole 65 Elastic member

Claims (9)

A slide rail device for a vehicle that slidably guides a seat portion relative to a vehicle body floor,
a lower rail fixed to the vehicle body floor and extending in the sliding direction of the seat portion;
an upper rail slidably supported by the lower rail and connected to the seat portion;
a lead screw that extends inside the lower rail along the lower rail and slides the upper rail by being screwed into and rotating with the upper rail;
a holding part that holds the lead screw at each of both ends of the lead screw;
A support member that abuts the lower rail and supports the lead screw is provided between the holding portion and the upper rail ,
A plurality of the support members are provided, and each of the plurality of support members is connected to another support member in the sliding direction by a first connection member,
The slide rail device is characterized in that the support member located closest to each of the front end and rear end of the upper rail is connected to the upper rail by a second connection member . The slide rail device according to claim 1, wherein the support member is configured to be movable along the lower rail depending on the position of the upper rail. The slide rail device according to claim 1 or 2 , wherein the support member located closest to each of the front end and rear end of the upper rail is threadedly engaged with the lead screw. The slide rail device according to claim 1, wherein the first connecting member and the second connecting member are formed of elastic members. The slide rail device according to claim 1, wherein the first connecting member and the second connecting member are formed of a plate material having a long hole. 6. The slide rail device according to claim 1, wherein the upper surface of the support member is located below the upper surface of the upper rail. 7. The slide rail device according to claim 1, wherein the support member is made of resin. The slide according to any one of claims 1 to 7 , wherein the support member has a through hole formed therein, and the lead screw passes through the through hole and is supported by the support member. rail device. A vehicle seat comprising: the slide rail device according to any one of claims 1 to 8 ; and a seat portion connected to the slide rail device.

Images