JPH09183322A - Seat sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of rollers without causing any backlash in the horizontal direction so as to accomplish lightening in weight, simplification of structure, and reduction in costs in a long rail. SOLUTION: A pair of front and rear rollers 18 are arranged freely rotationally in the inside of a guide rail 16 provided with a vertically long cross section, and a resin plate 26 is arranged between a vertical wall 16a of the guide rail 16 and a slide rail 12. When the slide rail 12 is fastened to a roller 18 by means of a bolt 22 with the projection 26a of the resin plate 26 brought into contact with the vertical wall 16a of the guide rail 16, the slide rail 12 is assembled to the guide rail 16 slidably with the resin plate 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device for supporting a seat slidably in the front-rear direction, and more particularly to a seat slide device having a wide slide range used for a rear seat of a multipurpose vehicle.

[0002]

2. Description of the Related Art Normally, a seat of an automobile or the like is supported by a seat slide device so as to be slidable in the front-rear direction. In this seat slide device, one of the slide rail fixed to the seat and the guide rail fixed to the floor or the like is formed into a substantially rectangular cross section having an opening in any wall surface, and the other is formed. On the other hand, it is slidably mounted on the other side through rolling elements such as steel balls and rollers.

As such a seat slide device, for example, a structure having a slide rail (also referred to as an upper rail) having a horizontally long cross section is known, and this structure is widely used regardless of the sliding range of the seat.

[0004]

However, a seat slide device provided with a slide rail or the like having a horizontally long cross section, that is, a horizontally long type seat slide device, has a smaller dimension in the height direction than that in the width direction. Since it tends to be disadvantageous to the load in the direction, the strength in the horizontal direction is usually secured by increasing the plate thickness of the slide rail and the guide rail. Therefore, in such a horizontally long type seat slide device, an increase in the overall weight of the seat slide device is unavoidable, and a wide slide range,
This is not preferable for so-called long rails.

Therefore, as a seat slide device, for example, a so-called vertically long type structure is known in which the guide rail is formed into a substantially rectangular shape with a vertically long cross section, as disclosed in JP-A-57-090225. In such a vertically long type seat slide device, the slide rail is disposed in the guide rail together with a pair of front and rear two pairs of rollers arranged one above and one below, and a seat cushion is provided through an opening of the guide rail. It is connected and fixed to a component member of the seat such as a frame.

According to this type of seat slide device, since a large resistance to a vertical load is obtained, it is possible to reduce the thickness of the plate used for the slide rail.
The weight of the seat slide device can be reduced. In other words, the weight of the long rail is sufficiently suppressed, so that the long rail can be effectively used.

However, in such a structure, one set of rollers is required above and below the slide rail, that is, a total of four rollers are required. Therefore, an increase in the number of parts and a complication of the structure due to this are avoided. Absent. Further, since the weight and the cost are likely to increase due to the increase in the number of parts, when the number of the rollers is increased, the weight and the cost are likely to be disadvantageous.

It is an object of the present invention to provide a seat slide device which reduces the number of rollers without causing rattling in the horizontal direction, thereby reducing the weight of a long rail, simplifying the structure, and reducing the cost. .

[0009]

In order to achieve this object, according to the present invention, a guide rail is formed in a substantially rectangular shape having a vertically long cross section having an opening in any of the vertical walls, and a pair of front and rear 1 is provided. A pair of rollers is rollably arranged in the guide rail, and a slide rail is juxtaposed outside the opening side of the guide rail.

A resin plate formed by extending in the sliding direction of the slide rail is interposed between the facing surfaces of both the slide rail and the guide rail while being fixed to the slide rail. The slide rail is slidably attached to the guide rail by coupling with the roller in a state where the corresponding surface of the resin plate is in sliding contact with the other side.

[0011]

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

As shown in FIGS. 1 and 2, in the seat slide device 10 according to the present invention, a slide rail 12 is provided.
However, it is assembled to a guide rail 16 fixed to the floor surface 14 or the like so as to be slidable in the longitudinal direction via a roller 18.

Such a seat slide device 10 is usually disposed on each of the left and right side portions of the seat, and a seat cushion, for example, a seat cushion frame 19 is fixed to a slide rail 12 which is a movable side.

As shown in FIGS. 1 and 2, the guide rail 16
Is one of the vertical walls, for example, left and right seat slide devices
The vertical wall 16a located inside 10 has an opening 20 and is formed in a substantially rectangular shape with a vertically long cross section. As can be seen from FIG. 3 in addition to FIGS. 1 and 2, in the present invention,
A pair of front and rear rollers 18 (F, R) are rotatably arranged in the guide rail 16 at positions separated from each other in the front and rear of the guide rail 16, and the vertical wall 16 on the opening side of the guide rail 16 is provided.
Slide rails 12 in the shape of a plate juxtaposed outside a
Is connected to the roller by a bolt 22 inserted through the opening 20.

In such a structure, the rolling of the rollers 18 (F, R) in the longitudinal direction inside the guide rail 16 causes
The slide rail 12 is slid with respect to the fixed guide rail.

As the roller 18 (F, R), for example, a radial bearing capable of supporting a load from a direction orthogonal to the rotation axis, more specifically, a steel ball (between the inner race 18a and the outer race 18b) is used. Interposed ball bearings (not shown) are available.

As such a ball bearing, a commercially available general one can be used, and by using this ball bearing as the roller 18 (F, R), smooth sliding of the slide rail with respect to the guide rail 16 can be achieved. It can be easily secured without complicating the configuration.

As shown in FIG. 2, in the embodiment of the present invention, the inner race 18a of the roller is formed with an internal thread 23 on the inner peripheral surface thereof, and a bolt is attached to the internal thread. 22 can be screwed.

By the way, as described above, the guide rail 16
In the configuration in which the rollers 18 (F, R) are rotatably arranged inside, the roller, that is, the slide rail 12 is moved to the left and right by the play of the roller with respect to the inside of the guide rail for ensuring the rolling of the roller. There is a risk of rattling in the direction, and in order to suppress this, it is conceivable to hold the vertical wall 16a of the guide rail between the roller and the slide rail.

However, the slide rail 12, the roller 18 (F,
Under the simple sandwiching of the vertical wall 16a of the guide rail between (R), a large frictional resistance is generated due to the contact between the slide rail and the facing surface of the guide rail 16, so that the slide rail smoothly slides with respect to the guide rail. Not easily secured.

Therefore, as shown in FIGS. 1 and 2, in the seat slide device 10 of the present invention, for example, between the vertical wall 16a of the guide rail and the facing surface of the slide rail 12, the slide direction of the slide rail is set. That is, the resin plate 26 extending in the longitudinal direction of the guide rail is interposed.

The resin plate 26 is formed, for example, with a pair of upper and lower linear protrusions 26a extending in the longitudinal direction. The protrusions are arranged on the guide rail side and the guide rail 1 is formed.
6, intervening between the slide rails 12. Then, the resin plate 26 is integrally slidably connected and fixed to the slide rail by tightening the bolts 22 together with the slide rail 12 while the protrusion 26a is slidably contacting the vertical wall 16a of the guide rail. ing.

In such a structure, the resin plate 26 is interposed between the slide rail 12 and the vertical wall 16a of the guide rail, and by the rollers 18 (F, R) and the slide rail,
Since the vertical wall of the guide rail is sandwiched, rattling of the guide rail 16 in the horizontal direction and the slide rail is sufficiently prevented.

Since the resin plate 26 is slidably connected to the slide rail 12 integrally with the vertical wall 16a of the guide rail in sliding contact with the projection 26a, the resin plate 26 is not slidably connected to the guide rail 16. Sufficient smooth sliding of the plate can be ensured. Therefore, the guide rail 16
Roller 18 (F, R) in horizontal direction against, slide rail
12 rattles can be easily obtained without hindering smooth slide of the slide rail.

Further, unlike the known structure using a total of four rollers as disclosed in Japanese Patent Laid-Open No. 57-090225, in the present invention, a pair of front and rear rollers, that is, two rollers. The rollers 18 (F, R) are rotatably arranged inside the guide rail 16, and it is sufficient if the resin plate 26 is interposed between the slide rail 26 and the vertical wall 16a of the guide rail. It is possible to reduce the number of parts due to the decrease in the number, and it is possible to easily ensure the simplification of the configuration and the reduction of the cost.

Furthermore, by reducing the number of parts associated with the reduction in the number of rollers, the overall weight of the seat slide device 10 can be reduced. Therefore, according to the present invention, the seat slide device 10 that can be particularly effectively used for a so-called long rail having a wide slide range of the slide rail 12 can be easily obtained.

Further, in the present invention, the linear projection 26a extending in the sliding direction of the slide rail 12, that is, the longitudinal direction of the guide rail 16 is integrally provided on the resin plate 26, and the vertical wall 16a of the guide rail 16a. The resin plate is interposed between the slide rail and the guide rail 16 by the sliding contact of the protrusion with the slide rail. That is, since the resin plate 26 is only in point contact with the vertical direction of the vertical wall 16a of the guide rail, the frictional resistance generated between the guide rail and the resin plate is sufficient in such a configuration. Get smaller.

Therefore, the slide rail 12 and the guide rail
By interposing such a resin plate 26 between 16 it is possible to sufficiently ensure smooth sliding of the slide rail with respect to the guide rail.

Here, in the embodiment of the present invention, the resin plate 26 is slidably connected integrally with the slide rail 12 by co-tightening with the bolt 22, but the invention is not limited to this. The resin plate may be fixed to the slide rail by means of, for example, individual screws. However, if the resin plate 26 is attached by co-fastening the slide rail 12 with the bolts 22, a separate member such as a screw becomes unnecessary, and a separate process work for fixing the resin plate is not required. Reduction and simplification of the configuration due to this can be achieved.

In the embodiment of the present invention,
The resin plate 26 is connected to and fixed to the slide rail 12, but not limited to this. For example, the resin plate may be a guide rail 16, that is, a vertical wall 16a of the guide rail.
It may be configured to be fixed to.

However, the resin plate 26 is attached to the guide rail 16.
In the configuration of fixing the resin plate, the resin plate must be arranged over the entire sliding range of the slide rail 12, whereas in the configuration of fixing the resin plate to the slide rail as in this embodiment, the arrangement range is For example, the length of the slide rail is sufficient.

Therefore, the resin plate 26 is attached to the slide rail.
If it can be slid together with 12, the length of the resin plate can be sufficiently suppressed to the length of the slide rail, and the configuration can be simplified and the cost can be reduced sufficiently.

Although the length of the resin plate 26 is substantially the same as that of the slide rail 12 here, the length of the resin plate 26 is long because it can be installed between the bolts 22 located at the front and rear. Not limited to this.

In the embodiment of the present invention,
The protrusion 26a of the resin plate is formed in a linear shape that extends continuously in the sliding direction of the slide rail 12, but it is sufficient if it has a shape that allows point contact with the vertical wall 16a of the guide rail. You may form a protrusion in the shape divided | segmented into multiple.

By the way, in the seat slide device 10 having such a structure, the slide of the slide rail 12 with respect to the guide rail 16 can normally be regulated by the lock of the lock mechanism 28. Then, FIGS.
In the present invention, as shown in FIG.
A plurality of lock holes 30 formed at equal intervals on the upper wall 16b of the guide rail, and lock claws 32 that can be inserted into and engaged with the lock holes.
A lock plate 32 having a at the lower end is provided, and the slide of the slide rail 12 with respect to the guide rail 16 can be regulated, that is, lockable by inserting and engaging a lock claw into the lock hole.

As shown in FIGS. 2 and 3, in the embodiment of the present invention, the lock claw 32 of the lock plate is used.
a is provided at two positions separated from each other in the longitudinal direction of the guide rail 16 so that it can be inserted into and engaged with two adjacent lock holes 30 at the same time.

The lock plate 32 is, for example,
Clamping between a pair of guide plates 34 provided adjacent to each other in the longitudinal direction of the guide rail 16 and a slide rail
12 and by being sandwiched between the cover plates 36, they are supported so that they can only move up and down with respect to the slide rail.

As shown in FIGS. 1 and 3, the guide plate 34 and the cover plate 36 are, for example, rivets 38.
Are fixed together on the slide rail 12.

In such a lock mechanism 28, the lock plate 32 is biased in the insertion direction of the lock claw 32a into the lock hole 30 of the guide rail under the biasing force of the lock spring 40. As the lock spring 40, for example, a torsion spring wound on a support shaft composed of a rivet 42 or the like above the lock plate so that the upper end of the lock plate 32 can be pressed by each terminal can be used (see FIGS. 2 and 3). .

An operation lever (not shown) for pulling up the lock plate 32 against the biasing force of the lock spring 40 is connected to the lock plate via an interlocking means 44 so as to be interlocked. As can be seen from FIGS. 1 to 3, as the interlocking means 44, for example, a so-called covered wire in which the wire body 42a is covered with a cover 44b can be used. Locking pieces 12a and 32b aligned in the vertical direction are provided on the slide rail 12 and the lock plate 32, respectively. The wire body 44a is locked to the lock plate locking piece and the slide rail locking piece. The covered wire (interlocking means) 44 is connected and disposed by locking the cover 44b to the cover wire.

It should be noted that the operation lever is located at a position where it can be easily operated.
For example, it is provided so as to be exposed on the front and rear sides or the left and right sides of the seat cushion.

According to such a lock mechanism 28, when the lock plate 32 is moved up and down along the slide rail 12,
Since the lock claw 32a and the lock hole 30 are engaged and disengaged, that is, locked and unlocked, it is not necessary to provide a space for the lock mechanism on the side of the slide rail, the guide rail 16, or the like. In other words, the seat slide device 10 of the present invention can be arranged as long as there is a space that can ensure the sliding of the slide rails 12. Therefore, for example, as shown in FIG. In the configuration in which the seat slide device is arranged in the recess 46 such as the floor surface 14, the width of the recess can be made sufficiently narrow.

Therefore, in the structure in which the seat slide device 10 is disposed in the recess 46 such as the floor surface, it is possible to sufficiently prevent a decrease in safety and the like due to the existence of the recess.

A floor carpet covering the floor surface 14 and the like
Since it is sufficient to form the slit 50 having a width that allows the slide rail 12 and the like to be extended over the slide range of the slide rail 48, the overall appearance quality of the interior of the floor carpet, and by extension, the interior of an automobile or the like is improved.

Further, since it is sufficient to form the lock hole 30 into which the lock claw 32a of the lock plate can be inserted and engaged, on the upper surface of the guide rail 16, it is possible to increase the number of parts without increasing the number of parts.
The lock mechanism 28 that can be appropriately locked and unlocked can be easily secured.

Reference numeral 52 in FIG. 2 is a guide rail.
Front side fittings used when fixing 16 to the floor 14 etc.

By the way, in the seats of automobiles,
A configuration is known in which a belt anchor (not shown) for a seat belt is directly connected to the slide rail 12. In such a configuration, when an excessive load such as in an emergency is applied to the belt anchor, the load acts as a force in the pulling direction and concentrates on the connection point of the belt anchor to the slide rail 12, There is a risk of insufficient strength at the connecting points.

Therefore, as shown in FIGS. 1 and 2, a holding piece 12 having a substantially U-shaped cross section that can hold the guide rail 16 from below.
It is preferable in the seat slide device 10 of the present invention that b is integrally provided at the lower end of the slide rail 12. With such a configuration, even if the slide rail 12 is deformed under the action of an excessive force in the pulling direction from the belt anchor, the force is exerted on the belt anchor by the engagement of the holding piece 12b with the guide rail. Since it is released to the guide rail without being concentrated at the connecting point, the lack of strength at the connecting point of the belt anchor is sufficiently resolved by the distribution of the force.

Further, according to this structure, since the holding piece 12b is provided integrally with the slide rail 12, the number of parts is not increased.

The seat slide device of the present invention is
Although it is suitable for a long rail to be mounted on a rear seat of a multipurpose vehicle, the invention is not limited to this. For example, a seat slide device in a normal slide range and a train,
The present invention may be applied to a seat slide device mounted on a seat of an airplane, a ship, or the like.

The above-described embodiments of the present invention are for explaining the present invention and are not intended to limit the present invention in any way, and modifications and alterations made within the technical scope of the present invention are also possible. It goes without saying that all are included in this invention.

[0052]

As described above, according to the seat slide device of the present invention, since the vertical wall of the guide rail is sandwiched between the slide rail and the roller via the resin plate, the vertical direction of the guide rail is increased. Rattling of the rollers and slide rails is sufficiently prevented. Further, since the resin plate is only in sliding contact with one of the slide rail and the guide rail, the roller in the horizontal direction and the rattling of the slide rail do not hinder the smooth sliding of the slide rail. Can be obtained.

Further, a pair of front and rear rollers are rotatably arranged inside the guide rail, and it is sufficient if a resin plate is interposed between the slide rail and the vertical wall of the guide rail. It is possible to reduce the number of parts due to the decrease in the number of components, and it is possible to easily ensure simplification of the configuration and the reduction of cost.

Further, since the number of parts is reduced due to the reduction of the number of rollers, the overall weight of the seat slide device can be reduced. Therefore, the present invention provides a seat slide device that can be effectively used for long rails. It can be easily obtained.

If the resin plate is connected and fixed to the slide rail by co-tightening with bolts, a separate member such as a screw becomes unnecessary, and a separate process for fixing the resin plate is not necessary. Therefore, the number of parts can be reduced, and the configuration can be simplified accordingly.

Further, since the resin plate can be slid integrally with the slide rail, the length of the resin plate can be sufficiently suppressed to the length of the slide rail, so that the structure can be simplified and the cost can be reduced. It is possible enough.

If a linear protrusion extending in the sliding direction of the slide rail is provided on the resin plate, sliding contact can be obtained under point contact, so that the resin plate is placed between the slide rail and the guide rail. With the interposition, smooth slide of the slide rail with respect to the guide rail can be more sufficiently ensured.

If a holding piece having a substantially U-shaped cross section that can hold the guide rail from below is integrally provided at the lower end of the slide rail, an excessive force in the pulling direction against the guide rail in an emergency can be exerted on the guide rail. Since it is released to the guide rail under the engagement of the holding piece, the plate thickness of the slide rail is not increased, the structure is not complicated, etc.
Insufficient strength at the connecting point of the belt anchor is sufficiently solved.

If a ball bearing is used as the roller, smooth slide of the slide rail with respect to the guide rail can be easily ensured without complicating the structure.

Furthermore, according to the lock mechanism that can be locked and unlocked by raising and lowering the lock plate along the slide rail with respect to the guide rail, the lock mechanism is provided laterally of the slide rail and the guide rail for the lock mechanism. Since there is no need to provide a space, the lateral width of the recess such as the floor surface can be made sufficiently narrow, and the decrease in safety due to the existence of the recess can be sufficiently prevented.

Since it suffices to form a slit having a width that allows the slide rails to extend on the floor carpet covering the floor surface and the like, the overall appearance quality of the floor carpet, and by extension, the interior of the interior of an automobile or the like is improved. To be done.

Further, the insertion of the lock claw of the lock plate,
Since it suffices to provide an engageable lock hole on the upper surface of the guide rail, it is possible to easily secure a lock mechanism that can be appropriately locked and unlocked without increasing the number of parts.

[Brief description of the drawings]

FIG. 1 is a schematic vertical cross-sectional view of a seat slide device according to the present invention centering on a lock mechanism.

FIG. 2 is a schematic exploded perspective view of the seat slide device with a part thereof broken away.

FIG. 3 is a schematic front view of the lock mechanism of the seat slide device in a locked state with a part thereof broken away.

[Explanation of symbols]

 10 Seat slide device 12 Slide rail 12b Holding piece 16 Guide rail 16a Vertical wall 18 (F, R) Roller (ball bearing) 18a Inner race 18b Outer race 20 Guide rail opening 22 Bolt 26 Resin plate 26a Protrusion 28 Lock mechanism 30 Lock hole 32 Lock plate 32a Lock claw 40 Lock spring 44 Interlocking device

Claims (6)

[Claims] 1. A slide rail fixed to a seat,
In a seat slide device that is slidably mounted on a guide rail that is fixed to the floor, etc., and that can be regulated to slide under the lock of a lock mechanism, the guide rail has an opening on one of the vertical walls. Is formed in a substantially rectangular shape having a vertically long cross section, and a pair of front and rear rollers is
The slide rail is rotatably arranged in the guide rail, and the slide rail is juxtaposed outside the opening side of the guide rail. With the fixing to either one of the two, the slide rail is connected to the guide rail by interlocking with the roller in a state in which it is interposed between the opposing surfaces and the corresponding surface of the resin plate is in sliding contact with the other. A seat slide device characterized by being slidably assembled. 2. A slide rail fixed to a seat,
In a seat slide device that is slidably mounted on a guide rail that is fixed to the floor, etc., and that can be regulated to slide under the lock of a lock mechanism, the guide rail has an opening on one of the vertical walls. Is formed in a substantially rectangular shape having a vertically long cross section, and a pair of front and rear rollers is
The slide rail is rotatably arranged in the guide rail, and the slide rail is juxtaposed outside the opening side of the guide rail. Of the slide rail for the roller and the resin plate with the corresponding surface of the resin plate slidably in contact with the vertical wall of the guide rail by the bolt that is interposed between the facing surfaces of the guide rail and extends through the opening of the guide rail. A seat slide device in which a slide rail is slidably attached to a guide rail together with a resin plate by joint fastening. 3. A resin plate is molded with a protrusion that linearly extends in the sliding direction of the slide rail, and the linear protrusion slides on the facing surface of either the slide rail or the guide rail. The seat slide device according to claim 1, which is in contact with the seat slide device. 4. The seat slide device according to claim 1, wherein the slide rail is integrally formed with a holding piece having a substantially U-shaped cross section capable of holding the guide rail from below at its lower end. . 5. The seat slide device according to claim 1, wherein a ball bearing in which a steel ball is interposed between an inner race and an outer race is used as the roller. 6. The lock mechanism has lock holes formed at a plurality of positions on the upper surface of the guide rail; lock claws that can be inserted into and engaged with the lock holes at the lower end, and can move up and down with respect to the slide rail. A lock plate provided; a lock spring that biases the lock plate in the insertion direction of the lock claw into the lock hole; an interlocking device that interlocks the lock plate with an operating lever at a separated position; The seat slide device according to any one of claims 1 to 5, wherein the lock mechanism can be unlocked by the pulling-up operation of the lock plate against the biasing force of the lock spring by the lever.