JP3538066B2 - Rail structure of seat slide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail structure of a seat slide device for supporting a seat so as to be slidable in the front-rear direction, and more particularly, to a combination of a pair of runners and guide rails formed by extruding a specific material. The present invention relates to a rail structure of a seat slide device.

[0002]

2. Description of the Related Art For example, a seat slide device generally known in a front seat of an automobile is mounted on a multi-row rear seat such as a second seat or a third seat disposed behind the front seat. Is widely adopted in multipurpose vehicles represented by RV vehicles such as minivans and 1-box vehicles.

As described above, if the rear seat is a slide seat, various seat arrangements can be made by sliding the rear seat, so that it is possible to ride in various seating forms, and a luggage space (luggage space) in the rear seat space. Can be easily expanded.

As a seat slide device of this type, for example, a runner (also referred to as an upper rail) on which a seat is mounted and fixed on a guide rail (also referred to as a lower rail) fixed to a vehicle floor or the like, a steel ball, a roller, or the like is used. Is generally slidably assembled via a rolling element or a slider made of synthetic resin. And since the rear seat space is longer in the front-rear direction than the front seat space, the so-called long rail type that can secure a long sliding range by using long guide rails (long rails) Is provided as a seat slide device.

[0005]

A runner and a guide rail which form a rail of a seat slide device are usually
Each is formed into a corresponding shape by press working of an iron material or the like. However, since the specific gravity of iron materials or the like generally used as these materials is heavy, the weight increase is unavoidable especially when the guide rails are long rails.

Therefore, in recent years, a guide rail serving as a long rail is being formed from, for example, an aluminum material having a low specific gravity.

[0007] In addition to sliding in the front-rear direction, a structure that is detachable from the vehicle floor is now widely known as a rear seat of a multipurpose automobile or the like. In this configuration, the rear seat is normally detachable from the vehicle floor under the condition that the runner is removed from the guide rail. I have.

Therefore, it has been considered in this long rail type rail body to form the runner together with the guide rail from a material having a low specific gravity such as an aluminum material.

By the way, when a long object having a constant cross-sectional shape such as a guide rail is formed, so-called extrusion is considered effective from the viewpoint of workability. However, since a molded body formed by extrusion is required to have a constant cross-sectional shape, it is likely to be difficult to provide a runner with a stopper for a rolling element and a fixing piece for a slider.

Therefore, usually, by adding a separate member or the like, the rolling element and the slider can be interposed and held between the runner and the guide rail. However, the addition of such a separate member or the like tends to complicate the configuration due to the increase in the number of parts and complicate the operation, and is not preferable in view of these points.

Therefore, it is difficult at present to attach a runner formed by extrusion of an aluminum material or the like to a guide rail without complicating the configuration. It is also considered to be an obstacle to the weight reduction of the vehicle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rail structure of a seat slide apparatus in which runners and guide rails formed by extrusion can be slidably assembled without complicating the configuration.

[0013]

According to the present invention, one of a runner and a guide rail formed by extrusion of a specific material is disposed on one side of the front and left and right sides with respect to the other. the are possible interpolation respectively to face, of the opposing surfaces of the oppositely disposed side walls, moth
End face shape in the direction of extension
A concave groove having a substantially U-shape is formed, and a linear protrusion is formed on the opposing surface of the runner side wall along the extending direction by extrusion. Then, under the division of the linear projection by the pair of notches separated from each other by a predetermined distance, a part of the linear projection is defined as a partial divided fragment, and can be inserted into the concave groove,
And a slider which is shaped as a substantially round bar member slidable predetermined length within this concave groove, the fitting of the minute fragments into the fitting groove, immovably at least in the axial direction, the front left and right
Together they are mounted respectively on the linear projection of the side guide rails
Of the grooves on the front and left and right side walls of the
Placing, of its lower surface to be contacted, while the lower surface of one concave groove is formed as a flat surface, the lower surface of the other concave groove, the locking of the slider, is aligned, extending in the stretching direction It is formed as a non-flat surface having a concave.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In the rail structure of the seat slide apparatus according to the present invention, the pair of runners 12 and guide rails 14 shown in FIGS. 1 and 2 which constitute the rail body 10 are made of a specific material having a low specific gravity, for example, an aluminum material. Each is formed as a form having a constant cross-sectional shape by extrusion.
Then, via the slider 16, for example, the runner 12
Is slidably inserted into the other guide rail 14 to form the rail body 10. As shown in FIG. 3, this rail body is connected to the inner side (center-to-center), outer side (outer side) in the lateral direction of the vehicle. The seat slide device 20 that supports the seat 18 so as to be slidable in the front-rear direction by being juxtaposed at the separated position (close).

As can be seen from FIGS. 1 and 2, the runner (also referred to as an upper rail) 12 has, for example, a substantially U-shaped front surface in which side walls 12b are erected in parallel on the left and right sides of the front surface of a bottom wall 12a. The bracket 22, which is formed into a sheet 18 and the seat 18 is placed and fixed, is opened at its upper end, that is, at the upper end of the side wall,
It is integrally fixed at two places separated in the longitudinal direction, for example, at two places at the front and rear ends, by fitting a fixing pin 24 or the like (see FIG. 3).

As shown in FIGS. 1 and 2, a guide rail (also referred to as a lower rail) 14 fixed to a floor or the like is provided.
However, the runner bracket 22 is formed in a substantially hollow shape on the front surface capable of surrounding the runner 12, and the bracket 22 of the runner protrudes above the guide rail through an opening 14a on the upper surface extending in the longitudinal direction.

Here, as can be seen from FIGS. 1 and 2, in the present invention, the guide rail extends along the extending direction on the inner side surface of the guide rail side wall 14b facing the outer side surface of the runner side wall 12b. A concave groove 26 (26-1, 26-2) is formed, and a linear projection 28 which can be provided in the concave groove also extends in the extending direction, and is protruded from the outer surface of the side wall of the runner. I have.

According to the present invention, the slider 16 is formed of a synthetic resin material or the like as a substantially rod-like body slidable inside the groove 26 (26-1, 26-2) of the guide rail. As shown in FIG. 1, a part of the linear projection 28 is partially divided by a pair of cutouts 30 separated by a predetermined distance.
2 and FIG. 4 in addition to FIG. 1, the insertion of the segment into the insertion groove 32 causes the slider 16 to be at least axially immovable, It is mounted and fixed on the concentric shape of the projection.

The fitting groove 32 of the slider is formed at an intermediate position in the axial direction of the slider 16, for example, so as to penetrate in the diameter direction. A pair of cutouts 30 are formed apart from each other so as to define and form a segment 28-1 having a length corresponding to the insertion groove 32 of the slider.

The notch 30 is formed to have at least a length that allows each end of the slider 16 to be interposed and arranged, and the segment 28-1 formed by this notch is, for example, a linear projection.
It is provided at each end before and after 28. That is, slider 16
Are arranged and fixed at the front and rear positions of each runner side wall 12b.

As described above, in the rail body structure of the seat slide device of the present invention, the guide rail 14 is
The runners and guides need only be formed into a cross-sectional shape having a concave groove 26 (26-1, 26-2) in 14b, and a cross-sectional shape having a linear protrusion 28 on the side wall 12b. Each of the rails can be formed and embodied by extrusion of an aluminum material or the like. That is, the weight of the rail body 10 can be sufficiently reduced, and the molding operation can be sufficiently simplified.

The linear projection 28 extending in the extending direction on the side wall 12a of the runner is partially divided by a pair of notches 30, thereby forming a divided piece 28-1 to which the slider 16 can be mounted and fixed. Therefore, mounting and fixing of the slider to the runner can be easily performed without using a separate member or the like.

That is, according to the present invention, the runner 12 and the guide rail 14 formed by extruding an aluminum material having a low specific gravity can be slid freely under the attachment of the slider 16 without additional members or the like. Therefore, it is possible to easily assemble without complicating the configuration and complicating workability due to the increase in the number of parts.

Therefore, without complicating the configuration, etc.
It is easy to reduce the weight of the rail body 10 and to simplify the molding operation.

Further, in this configuration, since the slider 16 is mounted and fixed on the segment 28-1 partially defined by the linear projection 28 of the runner, the runner 12 from the guide rail 14 is fixed.
The removal of the slider accompanying the removal of the slider can be reliably prevented.
Therefore, according to the present invention, the work of attaching and detaching the seat 18 can be facilitated.

Further, in the configuration of the present invention, the formation of the pair of cutouts 30 merely forms the segment 28-1 on which the slider 16 can be mounted on the linear projection 28. Thereby, the mounting position of the slider or the number of mounting can be arbitrarily set. Then, by the formation interval of the pair of notches 30, the divided pieces 28-1 corresponding to various lengths of the slider 16 can be formed.

Therefore, since the position of the slider 16 or its length can be set and changed as appropriate, the rail body 10 of the seat slide apparatus having excellent versatility can be easily provided.

[0029]

In the embodiment of the present invention,
Although the runner 12 can be inserted into the guide rail 14,
It is sufficient that the runner is slidably assembled to the guide rail, and the present invention is not limited to this. On the contrary, the guide rail may be slidably inserted into the runner.

Further, in the embodiment of the present invention,
As a material of the runner 12 and the guide rail 14, an aluminum material is illustrated. However, a material having a relatively low specific gravity is sufficient, and the material is not limited to the aluminum material. For example, the runner and the guide rail may be formed from a stainless material or the like.

Here, as shown in FIGS. 1 and 4, in the structure of the present invention, the linear projection 28 is formed with a narrow portion 28a at the base.
It is preferable to form an engaging claw 34 having a wide end at the end thereof and capable of sandwiching the narrow portion at the fitting end of the fitting groove 32 of the slider.

According to such a configuration, when the segment 28-1 cut from the linear projection 28 is fitted into the fitting groove 32 of the slider, the wide portion 28b at the tip of the segment is engaged with the slider fitting groove. Since the slider 34 is engaged with the claw 34, it is possible to reliably prevent the slider from coming off the segment. Therefore, the reliability of mounting and fixing the slider 16 to the linear projection 28 and further to the segment 28-1 is further improved.

By the way, there is generally a mounting tolerance between the runner 12 and the seat 18 of the rail body 10 to which the guide rail 14 is fixed on the floor surface or the like. When fixing the seat to the bracket 22, it is necessary to align the left and right positions of the runner with the fixed pitch of the seat. Therefore, this kind of rail body 10
In FIG. 4, as shown in FIG. 4, a clearance L1 for ensuring a mounting tolerance between the runner 12 and the fixed pitch of the seat 18 is provided by the concave grooves 26 (26-1, 26-2) on the front left and right sides. Are provided between the slider 16 and the side surface of the slider.

According to such a configuration, the runner 12 can be set in the clearance L1 so as to be shifted in the left-right direction with respect to the guide rail 14, so that the mounting tolerance due to the left-right shift of the runner is ensured. Smooth and easy attachment between the seats 18 is possible.

However, the clearance L1 may allow the slider to meander in the concave groove 26 (26-1, 26-2) when the slider 16 slides, and thus may allow the runner 12 to meander. .

Therefore, as can be seen from FIGS. 1 and 4, in the present invention, the grooves 26 (26-1, 26-2) formed in the side walls 14b on the right and left sides of the front of the guide rail 14 are formed. Among them, for example, the lower surface 26-1a of the right concave groove 26-1 is formed as a flat surface, while the other, that is, the lower surface 26-2a of the left concave groove 26-2 is formed as a flat surface. Depression 36 extending in the stretching direction
Is formed as a non-flat surface.

As the shape of the concave groove lower surface 26-2a serving as the non-flat surface, for example, a substantially v-shaped cross-section that comes into contact with the peripheral surface of the slider 16 at two points can be exemplified.

According to such a configuration, the right and left positions of the slider 16 inserted in the front left groove 26-2 are aligned with the recesses 36 forming the non-flat surface of the groove lower surface 26-2a. The alignment tolerance between the runner 12 and the seat 18 is limited by the range of the clearance L1 defined in the front right groove 26-1 and the width of the segment. This is ensured in a range of tolerance between the portion 28b and the engagement claw 34 of the slider fitting groove. At the time of sliding of the slider 16 in the concave groove 26 (26-1 and 26-2), the locking of the slider in the recess 36 of the groove bottom surface 26-2a of the front left, the alignment, the Since the slider is slid with the depression as a guide, the meandering of the slider in the concave groove, that is, the meandering of the runner 12 with respect to the guide rail 14 can be reliably prevented.

Therefore, despite the provision of the clearance L1, a stable slide of the runner 12 can be easily secured.

In the structure of the present invention, the lower surface
The upper and lower points of the slider 16 in the front right groove 26-1 having the flat surface 26-1a, and the left front groove 26-2 having the non-flat lower surface 26-2a. In this case, only one upper point and two lower points of the slider are in contact with the opposing surfaces of the respective grooves. In other words, an excessive increase in the sliding resistance due to contact in a wide range can be prevented in this configuration, so that the sliding of the slider in the concave groove, that is, the sliding of the runner 12 is not adversely affected, and the guide rail 14 is not affected. A stable slide of the runner can be secured.

Here, in the embodiment of the present invention, the shape of the concave groove lower surface 26-1a, which is a non-flat surface, is embodied as a substantially v shape. However, the shape is not limited to this, and the lower surface of the concave groove may be formed in a non-flat surface shape having a substantially U-shaped depression.

However, if the shape of the concave groove lower surface 26-1a is substantially V-shaped, the contact between the concave groove lower surface and the peripheral surface of the slider 16 is a point contact at two points, and therefore, the excessive sliding resistance is reduced. Generation can be reliably prevented. Therefore, the concave groove 26 (26-2) having excellent slidability of the slider 16 can be easily secured.

In the embodiment of the present invention,
The lower right surface 26-1a of the concave groove on the right front side is embodied as a flat surface, and the lower surface 26-2a of the left concave groove on the front side is a non-flat surface. However, it is sufficient if one of the lower surfaces of the left and right concave grooves 26 (26-1, 26-2) is a non-flat surface provided with the depression 36, and conversely, the concave on the front left side is required. Groove lower surface 26
-2a may be formed as a flat surface, and the lower right surface 26-1a of the concave groove on the right front side may be formed as a non-flat surface.

Further, although the rail structure of the seat slide device of the present invention is effective for application to a seat slide device for a rear seat as a long rail, the present invention is not limited to this. It goes without saying that the present invention may be applied to a device.

Further, the present invention is not limited to seats of automobiles and the like, and the present invention may be applied to seat slide devices mounted on seats of trains, airplanes, ships and the like.

The embodiments described above are intended to explain the present invention, and do not limit the present invention in any way, and all the modifications and alterations within the technical scope of the present invention are not limited thereto. It goes without saying that it is included in the invention.

[0048]

As described above, according to the rail structure of the seat slide device according to the present invention, the side opposed to the side is disposed.
Of the opposing surface of the wall, the end surface is approximately equal to the opposing surface of the guide rail side wall.
Insert a U-shaped groove into the opposing surface of the runner side wall.
Since it is sufficient that the protrusions are formed along the stretching direction by the extrusion process , both the runner and the guide rail can be formed and embodied by the extrusion process of the specific material. Therefore, the molding operation can be sufficiently simplified.

The linear projection extending in the extending direction is partially divided by a pair of cutouts, so that the slider can be mounted and fixed, so that the slider can be mounted on the runner. Fixing can be easily performed without using a separate member or the like.

That is, a light-weight aluminum material or the like is used as a runner,
Since it can be used as a material for the guide rail, the weight of the rail body can be reliably reduced. Further, since the slider can be mounted and fixed without adding a separate member or the like, it is possible to easily assemble without complicating the configuration and complicating workability due to the increase in the number of parts. .

Further, since the slider is attached and fixed to the segment of the linear projection, the slider can be reliably prevented from being detached due to the removal of the runner from the guide rail. Therefore, according to the present invention, the work of attaching and detaching the seat can be facilitated.

Further, by forming a pair of cutouts, only the linearly mountable pieces of the slider are formed in linear projections. Therefore, the mounting position or the number of mounting of the slider can be arbitrarily determined depending on the formation position. Can be set. Then, by the formation interval of the pair of cutouts, pieces can be formed corresponding to various lengths of the slider.

Accordingly, since the position of the slider, the length thereof, and the like can be set and changed as appropriate, a rail body of a seat slide device excellent in versatility can be easily provided.

Also, of the grooves on the left and right sides of the front surface, the lower surface of one groove is a flat surface and the lower surface of the other groove is a non-flat surface having a depression extending in the extending direction. Both alignment of the runner and guaranteeing the tolerance of mounting the seat to the runner can be ensured. That is, a stable slide of the runner that does not meander with respect to the guide rail can be easily secured without complicating the configuration and irrespective of providing the clearance.

If the shape of the non-flat surface of the lower surface of the concave groove is substantially v-shaped, the contact between the lower surface of the concave groove, which is the non-flat surface, and the peripheral surface of the slider becomes a point contact at two points. The occurrence of sliding resistance can be reliably prevented. Therefore, it is possible to easily secure a concave groove excellent in slidability of the slider.

[Brief description of the drawings]

FIG. 1 is a schematic exploded perspective view showing a rail body structure of a seat slide device according to the present invention, showing a rail body partially broken.

FIG. 2 is a sectional view of the rail body, showing a rail body structure of the seat slide device.

FIG. 3 is a schematic perspective view of a seat slide device.

FIG. 4 is a partially enlarged cross-sectional view showing a rail body structure of the seat slide device, with the rail body partially broken.

[Explanation of symbols]

10 Seat slide device rail 12 runners 14 Guide rail 16 Slider 20 Seat slide device 26 Groove 28 linear projection 28-1 minute fragment 30 Notch 36 hollow

Claims (2)

(57) [Claims] 1. A pair of runners and guide rails, one of which can be inserted into the other, is formed by extrusion of a specific material, and the other is inserted into one through a pair of left and right front sliders. A rail body of a seat slide device in which a runner is slidably assembled to a guide rail. One of the runner and the guide rail can be inserted into the other with the side walls on the front left and right sides facing each other, Of the opposing surfaces of the opposing side walls, the guide rail side wall
On the opposing surface, the end surface shape in the stretching direction is substantially U-shaped.
Groove, and a linear projection on the opposing surface of the runner side wall ,
Each of the linear projections is defined as a partially divided fragment under the splitting of the linear projections by a pair of notches separated from each other by a predetermined distance and formed in the extending direction by the extrusion process, and is formed into a concave groove. interpolating possible, and a slider which is molded as a substantially round bar member slidable predetermined length within this concave groove, the fitting of the minute fragments into the fitting groove, immovably at least in the axial direction, the front left and right Each of the linear projections on each side is attached to each of the linear projections .
Placing the rider, of its lower surface to be contacted, while the lower surface of one concave groove is formed as a flat surface, the lower surface of the other concave groove, the locking of the slider, is aligned, the stretching direction A rail structure of a seat slide device formed as a non-flat surface having a recess extending in a vertical direction. 2. A non-planar surface shape of the concave groove bottom surface, the slider circumferential
The rail structure of the seat slide device according to claim 1, wherein the rail structure has a substantially v-shape capable of contacting the surface at two points .