JP2001225678A - Seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the rattling in the vertical direction and the left/right direction of an upper rail and to form an opening of a long lower rail into a narrow shape. SOLUTION: The long lower rail 12 is formed of a body part 12a and an upper side part 12d forming an opening 12e. The upper rail 13 is formed of a body part 13a and a vertical wall 13e projecting upward from the center of an upper wall 13d. A slide lock mechanism 40 is so formed that a link arm 41 is rotationally movably attached to the upper rail 13 so that the both ends of an inclined hole 43 of the link arm are positioned in the link center respectively, and a guide pin 45 fixed to a larch 32 having a lock jaw 34 selectively locked with a latch hole 36 of the long lower rail 12 is guided to a guide inclined hole 43 so that the latch 32 is advanced/retreated by the operation of the link arm 41 so as to lock on/off.

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, and more specifically, to a long lower rail that is long mounted in the front-rear direction of a sheet mounting floor, and a longitudinal direction on the long lower rail. The present invention relates to a seat slide device comprising an upper rail slidably guided and supported on a seat body side.

[0002]

2. Description of the Related Art In a conventional vehicle such as a one-box car, both occupant loading and luggage loading are used, so that an average number of seats and luggage loading space are provided. In addition, there are cases where a removable seat and a movable seat are provided other than the driver seat and the passenger seat.

In addition, a base of a reclining mechanism is mounted on the upper rail side, a seat back is mounted on an arm of the reclining mechanism, and the seat back is provided so as to be able to tilt forward and backward. Something to use as a table exists.

In such a vehicle, an area where the seat can be seated and an area where the seat cannot be seated are provided on the fixed rail, and an interlock member is provided on the upper rail. There has been proposed a lock mechanism for a seat slide device that cannot be moved to a range where a seat cannot be seated.

As a conventional example, see, for example, JP-A-9-9
As described in Japanese Patent No. 5163, a slide lock mechanism and an interlock member are provided, and the slide lock mechanism is unlocked by an operation lever, and the interlock member is unlocked by tilting the seat back forward. When the seat is in a seatable range, the operation lever releases the lock state of the slide lock mechanism, and the seat back is tilted forward to release the lock state of the interlock member. Something that makes it possible has been proposed.

[0006]

However, when the conventional seat slide device as described above is formed long, the processing of each part is complicated, and there is a problem that the dimensional error of each part is loose and the like. There is a disadvantage that the weight increases when the strength is to be maintained against the load, and when the lower rail is placed on the floor side of the vehicle body, dust on the floor falls from the opening of the lower rail into the lower rail. And
There was a possibility that a smooth sliding operation of the upper rail could not be obtained.

Further, since the latch and the interlock member of the slide lock mechanism lock the latch claw and the interlock claw in the latch hole and the interlock hole of the lower rail from the up and down direction of the lower rail, the up and down direction and the right and left of the upper rail. There was a disadvantage that it was not possible to suppress backlash in the direction.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent rattling of the upper rail of the seat slide device in the vertical and horizontal directions, to form the opening of the long lower rail to be narrow, and to remove dust on the floor surface from the opening of the lower rail. Can be prevented from dropping into the lower rail from the part, and the structure is simple, there is no need to increase the number of parts and installation work, it is inexpensive, and it can absorb dimensional variations. An object of the present invention is to provide a seat slide device capable of performing a mounting operation easily and quickly, obtaining a smooth and stable sliding operation, and improving operability.

[0009]

In order to achieve the above object, a seat slide device according to a first aspect of the present invention is provided.
A long lower rail that is long placed in the front-rear direction of the sheet mounting floor, and an upper rail that is guided and supported slidably in the longitudinal direction on the long lower rail and that is attached and fixed to the seat body side. In the seat slide device, the long lower rail includes a main body having a substantially upward U-shape, and a pair of left and right upper portions extending inward from both ends of the main body and forming an opening. The upper rail has a substantially downward U-shaped main body that is assembled so as to cover the long lower rail,
A vertical wall protruding above a center of an upper wall of the main body, and protruding above an opening at an upper portion of the long lower rail, wherein a slide lock mechanism between the long lower rail and the upper rail includes A latch claw selectively engaged with a plurality of lock holes formed in a side portion of a body portion of the lower rail; a latch abutting on a lower surface of a bottom wall of the upper rail; and a vertical wall of the upper rail. The upper arm is biased in the locking direction by a spring, and the lower flange is provided with a guide inclined hole which is inclined with respect to the side wall of the long lower rail; And a guide pin slidably received along a guide inclined hole of the link arm through an insertion hole formed in the bottom wall. .

Therefore, according to the seat slide device of the first aspect, when the link arm is urged by the spring, the link center of the link arm becomes the lock hole side end of the guide inclined hole in the link arm, The latch claw of the latch integrated with the guide pin guided by the guide inclined hole engages with the latch hole to maintain the lock-on state.

In order to set the lock-off state, the link arm is rotated in the direction opposite to the biasing direction of the spring. When the guide pin is retracted, the latch is also retracted, and the latch claw is disengaged from the latch hole of the long lower rail, and the lock-off state is set.

[0012] Therefore, the cam mechanism of the guide inclined hole of the link arm and the guide pin press-fitted and fixed to the latch,
The rotation operation of the link arm can be faithfully converted to the linear operation of the latch, and rattling of the latch can be effectively suppressed.

According to a second aspect of the present invention, in the seat slide device, a cutout portion corresponding to a width dimension of the latch is provided in a latch mounting portion of the upper rail, and the latch is accommodated in the cutout portion. In addition, the holder is fixed to the bottom wall of the upper rail from the lower surface side of the latch, and the latch is sandwiched between the lower surface of the bottom wall of the upper rail and the holder.

Therefore, according to the seat slide device of the second aspect, the latch is brought into contact with the lower surface of the bottom wall of the upper rail, and the holder is attached from the lower surface side, so that the latch can be moved between the upper rail and the holder. Further, since the holder for pressing and supporting the lower surface of the latch is fixed to the bottom wall of the upper rail with an interval of the width of the latch, the latch allows the latch to move vertically and horizontally. There is no backlash.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a seat slide device according to the present invention will be described in detail with reference to the drawings. FIG. 1 (a),
(B) to FIG. 8 show an embodiment of the present invention, respectively. FIGS. 1 (a) and 1 (b) show a perspective view and a sectional view of a long lower rail of a seat slide device of the present invention.
2 is a schematic plan view of the seat slide device, FIG. 3 is a cross-sectional view of the seat slide device, FIG. 4 is an exploded perspective view of the seat slide device, and FIG. FIGS. 6 and 7 are cross-sectional views and explanatory views of the slide lock mechanism in a lock-on state, and FIGS.
FIG. 9 shows a cross-sectional view and an explanatory view of the slide lock mechanism in a lock-off state.

Although not shown, the seat slide device 11 is provided on the floor of the vehicle body between the seat body composed of a seat cushion, a seat back and the like, and the floor surface of the vehicle body. It is well known that it is used to support the seat slidably in the front-rear direction.

The sheet slide device 11 is a long lower rail 12 that is placed long in the front-rear direction of the sheet mounting floor.
And an upper rail 13 slidably guided in the longitudinal direction on the long lower rail 12 and attached and fixed to the seat body side. The long lower rail 12 and the upper rail 13 of the seat slide device 11 are formed by extrusion molding from a light alloy such as an aluminum die cast or a magnesium alloy. In addition, a hard synthetic resin molded product may be used. In addition, long lower rail 1
In the embodiment shown in FIG. 3, 2 is buried in the cutout portion 14a of the carpet 14, but it can be used as a normal seat slide device by providing a leg.

As shown in FIG. 3, the long lower rail 12 has a main body portion 12a having a substantially upward U-shape, and a slider receiving portion formed inside the outer end of both sides 12b, 12b of the main body portion 12a. 12c, 12c, and a pair of left and right upper portions 12 that are bent inward and extend inward from the distal ends of the side portions 12b, 12b to form an opening 12e.
d, 12d, and roller receiving steps 12f, 12f are formed on both sides of the bottom of the main body 12a. The shape of the bottom of the main body 12a is not limited to the one shown in the figure.

The upper rail 13 is a lower rail 12
Body 13a having a substantially downward U-shape such that the body 13a can be mounted on the body, and both sides 13b, 1 of the body 13a.
3b, a slider receiving portion 13c formed on the upper side of the outside.
13c, and a vertical wall 13e protruding above the center of the upper walls 13d, 13d of the main body 13a and protruding above the openings 12e of the upper portions 12d, 12d of the long lower rail 12. A latch 32 and an interlock member 33 are provided between the upper rail 13 and the lower rail 12 as a lock member of a lock mechanism.

As shown in FIGS. 1A and 1B and FIG.
Opening 1 of body 12a of long lower rail 12
A first hook portion 15 is formed at the tip on the 2e side, and the second hook portion 1 is provided on both side portions 12b and 12b of the main body portion 12a.
7, 17 are respectively formed. Further, finisher mounting portions 21 and 21 are formed to protrude obliquely upward near a connection portion between the upper ends of both side portions 12b and 12b on the upper portion of the long lower rail 12 and the pair of left and right upper portions 12d and 12d. As shown in FIG.
The finishers 23, 23 are mounted.

The finisher 23 is formed of a synthetic resin material, has a soft lip portion 23a formed on the inside, and a locking portion 23b formed on the back side of the finisher 23. The locking portion 23b is attached to the finisher mounting portion 21. By being locked, the lip 23a comes into contact with the vertical wall 13e protruding above the opening 12e, and the opening 12e of the upper portions 12d, 12d of the long lower rail 12 is shielded. . End caps 23c and 23d are attached to the front and rear ends of the finisher 23.

As shown in FIG. 3, the upper rail 13
First locking portions 18, 18 which are locked to the first hook portions 15, 15 of the long lower rail 12, respectively, are formed on upper walls 13d, 13d of the main body portion 13a, and the main body portion of the upper rail 13 is formed. The second hook portions 17, 1 of the long lower rail 12 are provided at the tip sides of both side portions 13 b, 13 b of the long lower rail 12.
The second locking portions 19, 19 locked to the lock 7 are formed respectively.

A slider 25 is inserted between the slider receiving portions 12c, 12c of the long lower rail 12 and the slider receiving portions 13c, 13c of the upper rail 13, and a step at the bottom of the main body 12a of the long lower rail 12. Rollers 27 are provided between the upper rails 13f and 12f and the upper walls 13d and 13d of the main body 13a of the upper rail 13.
Is inserted. Reference numeral 27c is a roller shaft.

The roller 27 has two side portions 27a, 27a.
Is formed on the both sides 27a, 27a of the roller and the steps 12f, 12f at the bottom of the main body 12a of the long lower rail 12, so that the center of the small diameter is formed. 27b and long lower rail 12
A wide space can be secured between the main body 12a and the bottom of the main body 12a. Further, when the long lower rail 12 is fixed to the floor surface by the bolt 31, there is no possibility that the head 31a of the bolt 31 abuts on the roller 27.

The upper portion 12 of the long lower rail 12
The head 31 of the bolt 31 is provided on the opening 12e side of the d and 12d.
Each of the arc-shaped notches 12g through which a can be inserted is formed, so that the bolts 31 of the long lower rail 12 can be easily fixed.

Also, both side portions 27a of the roller 27, 27a
Of the main body 13a of the upper rail 13 are slidably abutted or provided on both sides 13b, 13b. When the vertical wall 13e of the upper rail 13 receives a tensile load upward, it is possible to prevent the side portions 13b, 13b of the main body portion 13a of the upper rail 13 from bending inward.

According to such a configuration, when a peeling load acts on the long lower rail 12 and the upper rail 13 from above and below, first, the first hook portion provided between the rails 12 and 13 is used. 15, 15 and first locking portion 1
When the upper rails 13 are pulled upward due to deformation of the first hook portions 15, 15 and the locked state of the first locking portions 18, 18, the second hooks The portions 17, 17 and the second locking portions 19, 19 are locked,
It is possible to obtain the peeling prevention function temporarily, whereby the peeling prevention can be easily and reliably obtained in a required state even when the peeling load is large.

As shown in FIGS. 1A and 1B, a latch hole 36 as a plurality of lock holes is formed in one side portion 12b of the main body portion 12a of the long lower rail 12, and the long lower rail 12 An interlock hole 37 as a lock hole is formed in the other side part 12b of the main body part 12a.

The latch 32 as a lock member projects to one side in the lateral direction of the upper rail 13 and is selectively locked in a plurality of lock holes 36 as lock holes in one side portion 12b of the long lower rail 12. And a latch claw 34 as a locking claw. Further, an interlock member 33 as a lock member protrudes to the other side in the lateral direction of the upper rail 13, and the other side portion 12 of the long lower rail 12.
interlock hole 37 as a lock hole formed in b
And an interlocking claw 35 as a locking claw that is locked by the lock.

Next, the configuration of the slide lock mechanism 40 of the seat slide device 11 will be described with reference to FIGS. As shown in FIG. 5, the slide lock mechanism 40 between the long lower rail 12 and the upper rail 13
Has a notch 1 having a size substantially equal to the width of the latch 32.
3f is formed on the lower surface of the bottom wall 13g of the upper rail 13 in the notch 13f.
The second latch claw 34 moves forward and backward along the lock direction in which the latch claw 34 engages with the latch hole 36 of the long lower rail 12 and the lock release direction.

In this embodiment, a mechanism using both a link mechanism and a cam mechanism is employed as a drive mechanism for the latch 32. That is, the link arm 41 is rotatably supported by the upper rail 13. The link arm 41 is bent approximately 90 ° so that the upper flange 41a and the lower flange 41b are parallel to each other in opposite directions, and a rivet for allowing the rivet 42 to pass through the vertical mounting portion 41c. A hole 41d is provided, and a guide inclined hole 43 is formed in the lower flange 41b. When the link arm 41 rotates, both ends 43a and 43b of the guide inclined hole 43 are positioned at the center of the link, respectively. I do.

The upper flange 41a is provided with a locking hole 41e for locking one end 44a of the spring 44. The other end 44b of the spring 44 is connected to the locking hole 13h of the vertical wall 13e of the upper rail 13. Is locked.

The link arm 41 has a lock-on state shown in FIG. 6 and a lock-off state shown in FIG. The rivet 42 is inserted into each of the rivet holes 41d and 13i with respect to the wall 13e and fixed by caulking so that the rivet 42 is rotatably mounted. The lower flange 41b of the link arm 41 is pierced in the upper wall 13d of the upper rail 13. Slender insertion hole 13j provided
Is housed in the upper rail 13 through the bottom wall 13
It faces substantially parallel to the upper surface of g. The insertion hole 13
j has a function of regulating the swing width of the link arm 41.

Further, the relationship between the link arm 41 and the latch 32 is such that a guide pin 45 is press-fitted and fixed in a press-fitting hole 32a formed in the center of the latch 32.
Is installed coaxially with the link center axis of the link arm 41, and has an insertion hole 13k not shown in FIG.
9 (shown in FIG. 9), and is slidably received in the guide inclined hole 43 of the link arm 41.

The bottom wall 13 of the upper rail 13
The holder 32 is set from the lower surface side of the latch 32, which is abutted on the lower surface of the g, and the width of the latch 32 is secured to secure the mounting holes 46 provided on both side edges of the holder 46.
By affixing the blind rivet 47 to the bottom wall 13g of the upper rail 13, the latch 32 is securely clamped between the bottom wall 13g of the upper rail 13 and the holder 46.

Therefore, in the lock-on state in which the upper rail 13 is locked to the long lower rail 12,
The spring force of the spring 44 is applied to the link arm 41,
The link arm 41 swings about the axis of the rivet 42 in the direction indicated by the arrow A in FIG. 5, and at this time, the relationship between the link arm 41 and the guide pin 45 is shown in FIGS. As shown in the plan view, the guide pin 45 is located at the terminal 43 a on the side closer to the latch hole 36 of the long lower rail 12 among both ends of the guide inclined hole 43 of the link arm 41. That is, the link arm 41
One end 43a of the guide inclined hole 43 at the center of the link
Is located, the latch 32 in which the guide pin 45 is press-fitted and fixed maintains the state in which the latch claw 34 is engaged with the latch hole 36 of the long lower rail 12, that is, the lock-on state.

To release the slide lock device 40, when the upper flange 41a of the link arm 41 is pressed against the spring force of the spring 44, the link arm 41 is moved in the direction opposite to the direction indicated by the arrow A in FIG. The link arm 41 pivots, and the guide pin 45 positioned on the link center axis of the link arm 41 is connected to the terminal 43 b on the side of the guide inclined hole 43 of the link arm 41 that is separated from the latch hole 36. Guide pin 4 to be guided
The latch 32 integral with the latch claw 3
The lock-off state is established by retreating in the direction in which 4 comes off.

As described above, the slide lock device 40 according to the present invention uses the rotation (swing) operation of the link arm 41 and the cam mechanism between the guide inclined hole 43 and the guide pin 45 in combination. The rotation operation of the link arm 41 can be converted into a linear advance / retreat operation of the latch 32, and the latch 32 is a linear movement that engages with or disengages from the latch hole 36 without wasteful movement. Therefore, smooth operation of the slide lock device 40 can be expected without rattling of the latch 32 left and right.

Further, since the latch 32 is tightly held by the lower surface of the bottom wall 13g of the upper rail 13 and the holder 46 so as not to rattle in the vertical and horizontal directions, no low-pitched sound or the like is generated. Smooth lock operation and unlock operation can be expected.

The present invention is not limited to the above-described embodiment, and the shape, structure, and the like of each part of the seat slide device can be freely modified and changed as necessary. Various modifications are conceivable, including the shape and material.

[0041]

The above is an embodiment of the seat slide device according to the present invention. According to the seat slide device of the first aspect of the present invention, the slide lock mechanism is provided on the side of the main body of the long lower rail. A latch claw selectively locked in a plurality of lock holes formed in the portion, a latch abutting on a lower surface of a bottom wall of the upper rail, and a rotatably supported by a vertical wall of the upper rail. The upper flange is urged in the locking direction by a spring, the lower flange is provided with a guide inclined hole which is inclined with respect to the side wall of the long lower rail, and the penetrating hole formed in the bottom wall of the upper rail. The guide arm is slidably received along the guide hole of the link arm through the hole, so that the link arm is biased by the spring. Then, the link center of the link arm is the lock hole side terminal of the guide inclined hole in the link arm, and the latch claw of the latch integrated with the guide pin guided by the guide inclined hole is engaged with the latch hole, While the lock-on state is maintained, the lock-off state is maintained by rotating the link arm in the direction opposite to the biasing direction of the spring, so that the other end of the guide hole is located at the link center of the link arm. When the guide pin is retracted, the latch is also retracted, the latch claw is disengaged from the latch hole of the long lower rail, and the lock-off state is established. The rotation operation of the link arm can be faithfully converted to the linear movement of the latch, effectively preventing the rattling of the latch, and the circular rotation of the slide lock mechanism. Do operability can be expected.

Further, according to the seat slide device of the second aspect of the present invention, the latch is brought into contact with the lower surface of the bottom wall of the upper rail, and the holder is attached from the lower surface side, so that the latch is connected to the upper rail. Since the holder that holds the lower surface of the latch is fixed to the bottom wall of the upper rail with an interval of the width of the latch, the holder can move the latch up and down. In addition, there is an effect that rattling does not occur in the left-right direction.

[Brief description of the drawings]

FIG. 1 shows a long lower rail of a seat slide device according to the present invention, wherein (a) is a perspective view and (b) is a sectional view.

FIG. 2 is a schematic plan view of a seat slide device according to the present invention.

FIG. 3 is a cross-sectional view of the seat slide device according to the present invention.

FIG. 4 is an exploded perspective view showing a configuration of a seat slide device according to the present invention.

FIG. 5 is an exploded perspective view showing a slide lock mechanism in the seat slide device according to the present invention.

FIG. 6 is a sectional view showing a lock-on state of a slide lock mechanism in the seat slide device according to the present invention.

FIG. 7 is an explanatory diagram showing a lock-on state of a slide lock mechanism in the seat slide device according to the present invention.

FIG. 8 is a sectional view showing a lock-off state of a slide lock mechanism in the seat slide device according to the present invention.

FIG. 9 is an explanatory diagram showing a lock-off state of a slide lock mechanism in the seat slide device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Seat slide device 12 Long lower rail 12a Main part 13 Upper rail 13a Main part 13e Vertical wall 13f Notch 13g Bottom wall 13h Locking hole 13i Rivet hole 13j Inserting hole 13k Inserting hole 25 Slider 27 Roller 32 Latch 34 Latch 36 Latch Hole 40 slide lock mechanism 41 link arm 41d rivet hole 42 rivet 43 guide inclined hole 44 spring 45 guide pin 46 holder 47 blind rivet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mori Sachi Eguchi 771 Kozono, Ayase-shi, Kanagawa F-term in Ikeda Bussan Co., Ltd. (Reference) 3B087 BA02 BB03 BB04 BB06 BC05 BC08

Claims (2)

[Claims] 1. A long lower rail which is mounted long in the front-rear direction of a sheet mounting floor surface, is guided and supported slidably in the longitudinal direction on the long lower rail, and is attached and fixed to a seat body side. In the seat slide device comprising an upper rail, the long lower rail includes a main body having a substantially upward U-shape, and a pair of left and right sides extending inward from both ends of the main body and forming an opening. An upper portion, wherein the upper rail has a substantially downward U-shaped main body portion which is mounted on the long lower rail so as to be mounted thereon, and protrudes upward from a center of an upper wall of the main body portion, A vertical wall protruding above an opening in an upper portion of the long lower rail, wherein a slide lock mechanism between the long lower rail and the upper rail includes a main body of the long lower rail; A latch claw selectively locked in a plurality of lock holes formed in a side portion of the upper rail; a latch abutting on a lower surface of a bottom wall of the upper rail; and a latch rotatable on a vertical wall of the upper rail. Supported, upper flange is urged by a spring in the locking direction, and link arm with guide inclined hole provided on lower flange inclined with respect to the side wall of long lower rail, and drilled in bottom wall of upper rail And a guide pin slidably received along the guide inclined hole of the link arm through the inserted insertion hole. 2. A notch corresponding to the width of the latch is provided at a latch mounting portion of the upper rail, the latch is accommodated in the notch, and a holder is provided from the lower surface of the latch to a bottom wall of the upper rail. The seat slide device according to claim 1, wherein a latch is fixed between the holder and a lower surface of a bottom wall of the upper rail and the holder.