JP2002144928A - Seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb the dimensional dispersion of each part of a vehicle and a seat, facilitate and accelerate mounting work, ensure a smooth and stable sliding movement, and improve operability by reducing sliding resistance. SOLUTION: A lower rail 12 has roller bearing steps 12f on both sides of the bottom portion of a body part 12a. A roller 27 is inserted between the steps 12f of the lower rail 12 and an upper wall 13d of an upper rail 13. The roller 27 is divided along the substantial middle into the right and left to form a right and a left roller part 27A and 27B. An elastic washer 28 is inserted as an elastic body in a roller shaft 47c situated at the division of the roller 27. Both side portions 27a of the roller 27 have taper surfaces 41, which are placed on taper surfaces 43 formed on the steps 12f of the lower rail 12 so as to slant downward to the middle of the width.

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 particularly, to a lower rail which is long mounted in the front-rear direction of a sheet mounting floor, and is slidable on the lower rail in the longitudinal direction. The present invention relates to a seat slide device comprising an upper rail which is guided and supported by a seat body and is attached and fixed to a seat body side.

[0002]

2. Description of the Related Art Generally, a vehicle seat is provided with a seat cushion and a seat main body comprising a seat back and the like provided upright and rotatably adjustable behind the seat cushion. By supporting the vehicle body on the floor via a front-rear slide mechanism, the vehicle is configured to be able to slide and adjust in the front-rear direction of the vehicle body, so that the layout of seats in the vehicle interior can be variously changed.

[0003] As such a seat back-and-forth sliding mechanism, a lower rail formed to be long in the front-rear direction on the vehicle body floor side, mounted on the vehicle body floor side, and provided at substantially the same height as the surface of the floor carpet. And a seat slide device comprising an upper rail attached and fixed to the seat body side.

As shown in FIGS. 5 and 6, in a conventional ordinary seat slide apparatus 1, a pair of left and right lower rails 2 are formed of a metal plate and have a substantially upward U-shaped main body 2a. A pair of left and right locking portions 3 that are bent inward from the front ends of the two side portions 2b and whose front ends hang downward are provided with openings 3a at the ends of the locking portions 3.

[0005] A pair of left and right upper rails 5 of the seat slide device 1 are formed in a substantially inverted T shape so as to be attached to the lower rail 2, and are bent upward from the distal end side of the horizontal portion of the upper rail 5. Locked portions are formed on both sides. The locked portion is engaged with the locking portion 3 on the lower rail 2 side so as to be engageable.

A substantially inverted T-shaped vertical portion 5a of the upper rail 5 projects upward from the opening 3a of the lower rail 2, to which an anchor member, a shaft of a seat lifter, a base of a reclining mechanism, and the like are attached. A roller 7 is inserted between the lower rail 2 and the upper rail 5 while being supported by a roller shaft 7a.

[0007] When the roller 7 is slidably supported with the roller 7 interposed between the lower rail 2 and the upper rail 5 as described above, a sliding function is obtained by the conventional simple sliding of metal surfaces. On the other hand, problems such as a sudden increase or decrease in slide resistance, malfunctions due to fluctuations in slide resistance due to abnormal noise or load during operation, and the like can be prevented to some extent.

[0008]

However, when the conventional seat slide apparatus 1 as described above is formed long, there is also a problem that the processing of each part is complicated, and there is a backlash due to a dimensional error of each part. However, when the roller 7 between the lower rail 2 and the upper rail 5 is tilted as shown in FIG. 6, the sliding operation force increases. However, there is a possibility that troubles such as a failure to smoothly slide the upper rail 5 may occur.

Also, if the clearance is set to be large in order to prevent an increase in sliding resistance, there is a risk that play will occur,
In addition, due to the dimensional variation of each part of the slide, it is necessary to select and fit rollers and sliders of different sizes, so that the number of parts increases and parts management becomes complicated.

An object of the present invention is to be able to absorb the dimensional variation of each part of a vehicle and a seat, to have a simple structure, to eliminate the necessity of increasing the number of new parts and to perform additional work, and to reduce the cost. Another object of the present invention is to provide a seat slide device which can perform a mounting operation easily and quickly, can obtain a smooth and stable sliding operation, and can reduce a sliding resistance and improve operability.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a seat slide device according to a first aspect of the present invention is provided such that the sheet slide device is long in the front-rear direction of a sheet mounting floor surface. A lower rail which is guided and slidably guided in the longitudinal direction on the lower rail, and which is attached and fixed to the seat body side, wherein the lower rail has a substantially upward U-shape. And a pair of left and right upper portions extending inward from both ends of the main body to form an opening, and a roller receiving step is formed on both sides of the bottom of the main body. The upper rail has a substantially U-shaped main body portion that is attached to the lower rail, and projects upward from a center of an upper wall of the main body portion, and an opening at an upper portion of the lower rail. A vertical wall protruding upwardly, and a roller inserted between a step at the bottom of the main body of the lower rail and an upper wall of the main body of the upper rail; The roller is pivotally supported by a roller shaft attached thereto, and is divided into right and left at a substantially central portion of the roller, and both sides of the roller are mounted on a step portion at the bottom of the main body of the lower rail. I do.

A seat slide device according to a second aspect of the present invention is provided with a lower rail that is mounted long in the front-rear direction of a sheet mounting floor surface, and is slidably guided and supported on the lower rail in the longitudinal direction. A seat slide device comprising an upper rail attached and fixed to the seat body side together with the lower rail, wherein the lower rail has a body portion having a substantially upward U-shape, and an opening formed by extending inward from both end portions of both sides of the body portion. A pair of right and left upper portions forming a roller, a roller receiving step is formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving step, and a slider is provided on the lower surface of the upper portion. A receiving portion is formed, and the upper rail is
A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of a main body portion of the upper rail, and a slider is inserted between a slider receiving portion of the lower rail and a slider receiving portion of the upper rail, and a bottom portion of the lower rail main body portion. A roller is inserted between the step portion and the upper wall of the main body of the upper rail, and the roller is pivotally supported by a roller shaft attached to both sides of the main body of the upper rail, and substantially at the center of the roller. , And both sides of the roller are inclined downward toward the center in the width direction formed at the step at the bottom of the main body of the lower rail. Characterized in that it is placed in supermarkets surface.

According to a third aspect of the present invention, there is provided a seat slide device, wherein a lower rail is placed long in the front-rear direction of a sheet mounting floor surface, and is slidably guided and supported on the lower rail in the longitudinal direction. A seat slide device comprising an upper rail attached and fixed to the seat body side together with the lower rail, wherein the lower rail has a body portion having a substantially upward U-shape, and an opening formed by extending inward from both end portions of both sides of the body portion. A pair of right and left upper portions forming a roller, a roller receiving step is formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving step, and a slider is provided on the lower surface of the upper portion. A receiving portion is formed, and the upper rail is
A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of a main body portion of the upper rail, and a slider is inserted between a slider receiving portion of the lower rail and a slider receiving portion of the upper rail, and a bottom portion of the lower rail main body portion. A roller supported by a roller shaft is inserted between the step portion and the upper wall of the main body of the upper rail, and both sides of the roller are formed to have a larger diameter than the center portion, and the roller is substantially The roller is divided right and left at the center, and tapered surfaces are formed on both sides of the roller. Characterized in that it is placed in a tapered surface inclined downward toward the center of the formed widthwise on the step portion.

According to a fourth aspect of the present invention, there is provided a seat slide device, wherein a lower rail is placed long in the front-rear direction of a sheet mounting floor surface, and is slidably guided and supported on the lower rail in the longitudinal direction. A seat slide device comprising an upper rail attached and fixed to the seat body side together with the lower rail, wherein the lower rail has a body portion having a substantially upward U-shape, and an opening formed by extending inward from both end portions of both sides of the body portion. A pair of right and left upper portions forming a roller, a roller receiving step is formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving step, and a slider is provided on the lower surface of the upper portion. A receiving portion is formed, and the upper rail is
A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of a main body portion of the upper rail, and a slider is inserted between a slider receiving portion of the lower rail and a slider receiving portion of the upper rail, and a bottom portion of the lower rail main body portion. A roller supported by a roller shaft is inserted between the step portion and the upper wall of the main body of the upper rail, and both sides of the roller are formed to have a larger diameter than the center portion, and the roller is substantially The roller is divided right and left at the center, and the elastic body is inserted into the roller shaft at the dividing position at the approximate center of the roller, and tapered surfaces are formed on both sides of the roller. Is, the tapered surface of the opposite side portions of said roller, characterized in that mounted on the tapered surface inclined downward toward the center of the main body portion of the bottom portion of the stepped portion formed in the width direction of the lower rail.

According to a fifth aspect of the present invention, there is provided a seat slide apparatus, wherein a lower rail is placed long in the front-rear direction of a sheet mounting floor surface, and is slidably guided and supported on the lower rail in the longitudinal direction. A seat slide device comprising an upper rail attached and fixed to the seat body side together with the lower rail, wherein the lower rail has a body portion having a substantially upward U-shape, and an opening formed by extending inward from both end portions of both sides of the body portion. A pair of right and left upper portions forming a roller, a roller receiving step is formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving step, and a slider is provided on the lower surface of the upper portion. A receiving portion is formed, and the upper rail is
A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of a main body portion of the upper rail, and a slider is inserted between a slider receiving portion of the lower rail and a slider receiving portion of the upper rail, and a bottom portion of the lower rail main body portion. A roller supported by a roller shaft is inserted between the step portion and the upper wall of the main body of the upper rail, and both sides of the roller are formed to have a larger diameter than the center portion, and the roller is substantially The roller is divided right and left at the center, and an elastic washer is inserted into the roller shaft at the dividing position near the center of the roller, and both sides of the roller are tapered. A surface is formed, and the tapered surfaces on both sides of the roller are placed on a tapered surface inclined downward toward the center in the width direction formed on the step at the bottom of the lower rail main body, and both end portions of the roller A clearance is provided between the upper rail and the side wall of the main body of the upper rail.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seat slide device according to the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 4 show an embodiment of the present invention. FIG. 1 shows a cross-sectional shape of a seat slide device which is a main part of the present invention.
FIG. 3 is a cross-sectional view showing a state where the upper rail of the seat slide device is inclined, and FIG. 3 is a cross-sectional view showing a state where the upper rail of the seat slide device is moved sideways.
Shows an exploded perspective view.

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.

As shown in FIGS. 1 and 4, a sheet slide device 11 is provided with a lower rail 12 that is long mounted in the front-rear direction of a sheet mounting floor, and a guide support slidably on the lower rail 12 in the longitudinal direction. And an upper rail 13 attached to and fixed to the seat body.

The seat slide device 11 is 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. Further, the lower rail 12 may be embedded in the cutout of the floor carpet, or may be provided with legs.

The lower rail 12 includes a main body 12a having a substantially upward U-shape, and both side portions 1a of the main body 12a.
A pair of left and right upper portions 12d, 12d which are bent inward from the distal end sides of 2b, 12b and extend to form openings 12e.
And slider receiving portions 12c, 12c formed inside the outer ends of the pair of left and right upper portions 12d, 12d, and roller receiving step portions 12f, 12f are formed on both sides of the bottom of the main body portion 12a. ing.

The upper rail 13 is a lower rail 12
Main body 1 having a substantially downward U-shape that can be assembled to the main body 1
3a, and slider receiving portions 13c, 13c formed on the upper outside of both sides 13b, 13b of the main body 13a.
And projecting upward from the center of the upper walls 13d, 13d of the main body 13a to form upper portions 12d, 1 of the lower rail 12.
It has a vertical wall 13e protruding above the 2d opening 12e. A latch 32 as a lock mechanism is provided between the upper rail 13 and the lower rail 12.

As shown in FIG. 1, a first hook portion 15 is formed at the end of the lower rail 12 on the opening 12e side of the main body portion 12a, and both side portions 12b, 12b of the main body portion 12a are formed.
The second hook portions 17 and 17 are respectively formed in b.
Also, both side portions 12b, 1 on the upper part of the lower rail 12 are provided.
Near the connecting portion between the upper end of 2b and the pair of left and right upper portions 12d, 12d, finisher mounting portions 21, 21 are formed projecting obliquely upward, and the finishers 23, 23 are mounted on the finisher mounting portion 21.

The finisher 23 is formed of a synthetic resin material, has a soft lip 23a formed 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 23e projecting upward from the opening 22e, and the openings 12e of the upper parts 12d, 12d of the lower rail 12 are shielded. Note that end caps 23c and 23d are attached to the front and rear ends of the finisher 23.

As shown in FIG. 1, the upper rail 13
First locking portions 18, 18 that are locked to the first hook portions 15, 15 of the lower rail 12 are formed on upper walls 13d, 13d of the main body portion 13a, respectively.
Second locking portions 19, 19 which are locked to the second hook portions 17, 17 of the lower rail 12, respectively, are formed at the distal ends of both side portions 13b, 13b of the main body portion 13a.

A slider 2 having elasticity between the slider receiving portions 12c, 12c of the lower rail 12 and the slider receiving portions 13c, 13c of the upper rail 13.
5 has been inserted. The slider 25 is formed of a synthetic resin material or the like, and can provide elasticity by forming a slit or the like such as a V-shaped groove 25a in the longitudinal direction.

This slider 25 is used for the upper rail 13
Because it is located at the upper end of both sides 13b, 13b of the main body 13a, the frictional resistance in the vertical and horizontal directions can be reduced. The main body 12 of the lower rail 12
Steps 12f, 12f at the bottom of a and upper rail 13
Roller 27 is inserted between upper walls 13d and 13d of main body 13a. The roller 27 is attached to a roller shaft 27c. The roller shaft 27c has a serration 27g formed at one end, and the serration 27g is press-fitted into a through hole formed in a side portion 13b of the main body portion 13a of the upper rail 13.

The roller 27 has both side portions 27a, 27a.
Are formed with a larger diameter than the central portion 27b,
A pair of left and right roller portions 27A and 27B is formed by being divided into right and left portions at a substantially middle position of the central portion 27b of 7. An elastic washer 28 is provided between the left and right roller portions 27A and 27B, and the elastic washer 28 as an elastic body is inserted into the roller shaft 27c. Elastic washer 28 The elastic washer 28 can be formed from a central flat washer and bending washers abutting on both sides of the flat washer. The elastic washer 28 as an elastic body can be formed from a coil spring, rubber, or the like, and may have any shape and material.
The point is that the left and right roller parts 27A,
It is sufficient that 27B can be moved in the left-right direction.

A tapered surface 41 is formed on the outer periphery of both side portions 27a of the left and right roller portions 27A, 27B.
The tapered surface 41 is formed so as to have a smaller diameter toward the outside. The tapered surfaces 41 of both sides 27a, 27a of the left and right roller portions 27A, 27B are mounted on a tapered surface 43 inclined downward toward the center in the width direction formed on the step 12f at the bottom of the main body 12a of the lower rail 12. ing.

The left and right rollers 27 are
By dividing the upper and lower rails A and 27B, it is possible to absorb variations in the vehicle body mounting portion and variations between the lower rail 12 and the upper rail 13, and when there is an excessive input, the elastic washer 28 is deformed. As shown in FIG. 2, the upper rail 13 can be absorbed by being inclined, and a smooth sliding operation can be obtained without increasing the sliding resistance.

Further, both side portions 27a of the left and right roller portions 27A, 27B are connected to the main body portion 12a of the lower rail 12.
By mounting on the upper ends of the steps 12f, 12f at the bottom of the lower rail, a wide space can be secured between the small-diameter central portion 27b and the bottom of the main body 12a of the lower rail 12, and the step is formed at the bottom. By forming 12f, 12f, the strength can be improved.

Further, as shown in FIG.
When the rivet 47 is fixed to the vehicle body mounting bracket 45 at the bottom of the rivet 47, there is no possibility that the head 47a of the rivet 47 comes into contact with the roller 27 because there is a wide space. still,
Opening 12 of upper part 12d of lower rail 12
On the e side, an arc-shaped notch 12g through which the head 47a of the rivet 47 can be inserted is formed, respectively.
7 Stopping can be performed easily.

The left and right roller portions 27A, 27B
A clearance 49 is provided between the end portions of both side portions 27a, 27a of the upper rail 13 and the inner wall of the side portion 13b of the main body portion 13a of the upper rail 13, and the clearance 49 causes the main body portion 13a of the upper rail 13 to move as shown in FIG. As shown, it can be moved in the lateral direction. The clearance 49 allows the play in the width direction to be absorbed by the lateral movement of the upper rail 13. When the backlash in the tilt direction and the width direction is absorbed, the shape of the slider 25 is also deformed.

According to such a configuration, the lower rail 1
Even if a peeling load acts on the upper rail 13 and the upper rail 13 from above and below, the first hook portions 15, 15 and the first locking portions 18, 18 provided between the two rails 12, 13 are locked. ,
Further, the second hook portions 17, 17 and the second locking portions 19, 1
9 is locked, and a peeling prevention function can be obtained temporarily, whereby peeling prevention can be easily and reliably obtained in a required state even when a large peeling load is applied.

The latch 32 as the lock mechanism is operated by an operation lever 51 as shown in FIG. A shaft lock 54 is connected to the operation lever 51 via a bush 55, and an operation piece 54a of the shaft lock 54 is attached to the latch 32 by a rivet lock 56, and a wave washer 57 and an E-ring are attached to the rivet lock 56 on the back surface of the latch 32. 58 are respectively attached. A spring 60 that urges in the locking direction is attached to the operation lever 51. Reference numeral 62 denotes a nut for fixing the operation lever 51. Also, both sides 1 of the lower rail 12
Protrusions 65 are formed at upper and lower positions of 2b and 12b to prevent the latch 32 and the like from interfering with the floor carpet.

It should be noted that the present invention is not limited to the structure of the embodiment described above, and that the shape, structure, etc. of each part of the seat slide device 11 can be freely modified and changed as necessary, Various modifications may be considered, including the shape and material of each rail.

[0036]

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, the lower rail has a main body portion having a substantially upward U-shape, and the main body has the same shape. A pair of left and right upper portions that extend inward from both end portions of the portion and form an opening, and a roller receiving step is formed on both sides of the bottom of the main body,
The upper rail has a substantially downward U-shaped main body that is attached to the lower rail, and protrudes above a center of an upper wall of the main body and protrudes above an opening at an upper part of the lower rail. A roller having a vertical wall and being inserted between a step at the bottom of the main body of the lower rail and an upper wall of the main body of the upper rail, wherein the roller is a roller attached to both sides of the main body of the upper rail; Since it is pivotally supported by the shaft and is divided into right and left at the approximate center of the roller, and both sides of the roller are placed on the step at the bottom of the main body of the lower rail, variations in the vehicle body mounting part and lower rail Can absorb variations between the upper rail and the upper rail. Can achieve smooth sliding operation without increasing the sliding resistance, and when a peeling load is applied, it can primarily exhibit the peeling prevention function. It does not require an increase in the number of parts or installation work, is inexpensive in cost, can be easily and quickly mounted, can achieve smooth and stable sliding operation, and has low frictional resistance and operability. Can be improved.

Further, according to the seat slide device of the second aspect of the present invention, the lower rail is provided with a main body having a substantially upward U-shape, and is extended inward from both ends of the main body. A pair of left and right upper parts forming an opening,
Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part, and the upper rail is A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening in an upper part of the lower rail, A slider receiving portion is formed at an upper end of an upper wall of a main portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a step at the bottom of the main portion of the lower rail is formed. A roller is inserted between the upper rail and the upper wall of the main body of the upper rail, and the roller is a roller system mounted on both sides of the main body of the upper rail. Together they are pivotally supported on the shift,
Since the roller is divided into right and left at a substantially central portion, and both side portions of the roller are mounted on a tapered surface inclined downward toward the center in the width direction formed at the step at the bottom of the main body of the lower rail, The roller can slide along the tapered surface, can absorb the variation of the vehicle body mounting part and the variation between the lower rail and the upper rail, and if there is an excessive input, the elastic washer is deformed, The upper rails can be absorbed by tilting and can absorb smoothly, can achieve smooth sliding operation without increasing the sliding resistance, and can exert the primary peeling prevention function when a peeling load is applied. Is simple, does not require an increase in the number of new parts or requires additional work, is inexpensive, and can be easily and quickly mounted, and achieves smooth and stable sliding operation. It can, can be natural also to improve the less to operability frictional resistance.

Further, according to the seat slide device of the third aspect of the present invention, the lower rail has a main body having a substantially upward U-shape, and extends inward from the distal end sides of both sides of the main body. A pair of left and right upper parts forming an opening,
Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part, and the upper rail is A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening in an upper part of the lower rail, A slider receiving portion is formed at an upper end of an upper wall of a main portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a step at the bottom of the main portion of the lower rail is formed. A roller supported by a roller shaft is inserted between the upper portion and the upper wall of the body portion of the upper rail, and both sides of the roller are larger than the center portion. In addition, the roller is divided into right and left at a substantially central portion of the roller, and tapered surfaces are formed on both sides of the roller, and tapered surfaces on both sides of the roller are formed on a step at the bottom of the main body of the lower rail. The roller is slid along the tapered surface because it is placed on the tapered surface that is inclined downward toward the center in the width direction, and the dispersion of the vehicle body mounting part and the dispersion between the lower rail and the upper rail. The elastic washer is deformed when there is an excessive input, and can be absorbed by tilting the upper rail to obtain a smooth sliding operation without increasing sliding resistance. When a peeling load is applied, a primary function of preventing peeling can be achieved, and the structure is simple. Manner to is also inexpensive, the attaching work easily and quickly done, it is possible to obtain a smooth and stable sliding operation, can be natural also improve operability by reducing the frictional resistance.

According to the seat slide device of the fourth aspect of the present invention, the lower rail has a main body having a substantially upward U-shape, and extends inward from the front end sides of both sides of the main body. A pair of left and right upper parts forming an opening,
Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part, and the upper rail is A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening in an upper part of the lower rail, A slider receiving portion is formed at an upper end of an upper wall of a main portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a step at the bottom of the main portion of the lower rail is formed. A roller supported by a roller shaft is inserted between the upper portion and the upper wall of the body portion of the upper rail, and both sides of the roller are larger than the center portion. The roller is divided into right and left at a substantially central part of the roller, an elastic body is inserted into a roller shaft at a dividing position at a substantially central part of the roller, and a tapered surface is formed on both sides of the roller, Since the tapered surfaces on both sides of the lower rail are mounted on the tapered surface inclined downward toward the center in the width direction formed at the step at the bottom of the lower rail main body, the roller slides along the tapered surface. Can absorb the variation of the vehicle body mounting part and the variation between the lower rail and the upper rail.If there is an excessive input, the elastic body will be deformed, the upper rail will be inclined, or It can be absorbed by moving, and smooth sliding operation can be obtained without increasing sliding resistance. When a peeling load is applied, temporary peeling is prevented. It can demonstrate the ability,
In addition, the structure is simple, no additional parts are required and no additional work is required, the cost is low, the mounting work can be performed simply and quickly, and a smooth and stable sliding operation can be obtained. Operability can be improved by reducing frictional resistance.

According to the seat slide device of the fifth aspect of the present invention, the lower rail has a main body having a substantially upward U-shape, and extends inward from both ends of the main body. A pair of left and right upper parts forming an opening,
Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part, and the upper rail is A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical wall protruding above a center of an upper wall of the main body and protruding above an opening in an upper part of the lower rail, A slider receiving portion is formed at an upper end of an upper wall of a main portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a step at the bottom of the main portion of the lower rail is formed. A roller supported by a roller shaft is inserted between the upper portion and the upper wall of the body portion of the upper rail, and both sides of the roller are larger than the center portion. The roller is divided into right and left at a substantially central portion of the roller, an elastic washer is inserted into a roller shaft at a dividing position at a substantially central portion of the roller, and a tapered surface is formed on both sides of the roller, The tapered surfaces on both sides of the lower rail are placed on the tapered surface inclined downward toward the center in the width direction formed at the step at the bottom of the body of the lower rail, and the both ends of the roller and the body of the upper rail. Since the clearance is provided between the side walls, it is possible to absorb the variation of the vehicle body mounting part and the variation between the lower rail and the upper rail, and when there is an excessive input, the elastic washer is deformed, The upper rail can be absorbed by tilting or moving laterally, and the clearance is provided so that the upper rail It can be moved quickly and easily in the lateral direction, can achieve a smooth sliding operation without increasing the sliding resistance, and when a peeling load is applied, it can primarily exhibit a peeling prevention function and has a structure It is simple and requires no additional parts or additional work.
It is inexpensive in terms of cost, the mounting work can be performed simply and quickly, a smooth and stable sliding operation can be obtained, and the operability can be improved by reducing the frictional resistance.

According to the present invention, it is possible to absorb the variation of the vehicle body attachment portion and the variation between the lower rail and the upper rail, and when an excessive input is made, the elastic washer is deformed and the upper rail is inclined. Or, it can be absorbed by moving in the lateral direction, and the clearance is provided so that the upper rail can be moved easily and quickly in the lateral direction, and absorb the dimensional variation of each part of the vehicle and the seat. In addition, the structure is simple, there is no need to increase the number of new parts and installation work, the cost is low, and the installation work can be performed simply and quickly.
It is possible to obtain a seat slide device capable of obtaining a smooth and stable sliding operation, and of course reducing sliding resistance and improving operability.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a seat slide device according to the present invention.

FIG. 2 is a cross-sectional view of the seat slide device according to the present invention in a state where an upper rail is inclined.

FIG. 3 is a cross-sectional view of the seat slide device according to the present invention in a state in which an upper rail has moved laterally.

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

FIG. 5 is a schematic sectional view of a conventional seat slide device.

FIG. 6 is a schematic cross-sectional view of a state in which a roller of a conventional sheet slide device is inclined.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Seat slide apparatus 12 Lower rail 12a Main part 12b Both sides 12c Slider receiving part 12d Upper part 12e Opening 12f Roller receiving step part 12g Notch 13 Upper rail 13a Main part 13b Both sides 13c Slider receiving part 13d Upper wall 13e Vertical wall 15 First hook portion 17 Second hook portion 18 First locking portion 19 Second locking portion 21 Finisher mounting portion 23 Finisher 25 Slider 25a V-shaped groove 27 Roller 27a Both side portions 27b Central portion 27c Roller shaft 27g Serration 27A Left and right roller portion 27B Left and right roller portion 28 Elastic washer 32 Latch 41 Tapered surface 43 Tapered surface 47 Rivets 49 Clearance 51 Operating lever 54 Shaft lock 55 Bush 56 Re Bet lock 60 spring 65 ridge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomonori Yoshida 771 Kozono, Ayase-shi, Kanagawa F-term in Ikeda Bussan Co., Ltd. (Reference) 3B087 BA02 BB03 BB05

Claims (5)

[Claims] 1. A lower rail which is long mounted in the front-rear direction of a sheet mounting floor surface, and an upper rail which is slidably guided and supported on the lower rail in a longitudinal direction and is fixed to a seat body side. In the seat slide device, the 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, Roller receiving steps are formed on both sides of the bottom of the main body. The upper rail has a substantially downward U-shaped main body that is attached to the lower rail, and a center of an upper wall of the main body. A vertical wall protruding further upward and protruding above an opening at an upper portion of the lower rail; and a step at a bottom of a main body of the lower rail and an upper wall of a main body of the upper rail. A roller is inserted between the rollers, the roller is pivotally supported by a roller shaft attached to both sides of the main body of the upper rail, and is divided into right and left at a substantially central portion of the roller. A seat slide device mounted on a step at the bottom of a main body of a lower rail. 2. A lower rail which is long mounted in the front-rear direction of a sheet mounting floor surface, and an upper rail which is slidably guided and supported on the lower rail in a longitudinal direction and is fixed to the seat body side. In the seat slide device, the 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, Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part. A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical protruding above the center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of the main body portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a main body of the lower rail is provided. A roller is inserted between the step at the bottom of the section and the upper wall of the body of the upper rail, and the roller is pivotally supported by roller shafts attached to both sides of the body of the upper rail. The roller is divided right and left at a substantially central portion thereof, and both side portions of the roller are mounted on a tapered surface inclined downward toward the center in the width direction formed at a step portion at the bottom of the main body of the lower rail. Seat slide device. 3. A lower rail which is long mounted in the front-rear direction of the sheet mounting floor surface, and an upper rail which is slidably guided and supported on the lower rail in the longitudinal direction and is fixed to the seat body side. In the seat slide device, the 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, Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part. A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical protruding above the center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of the main body portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a main body of the lower rail is provided. The roller supported by the roller shaft is inserted between the step at the bottom of the part and the upper wall of the main part of the upper rail, and both sides of the roller are formed with a larger diameter than the central part. The roller is divided into right and left at a substantially central portion thereof, and tapered surfaces are formed on both sides of the roller, and tapered surfaces on both sides of the roller are formed in a widthwise center formed on a step portion at the bottom of the main body of the lower rail. The seat slide device is mounted on a tapered surface that is inclined downward toward the seat. 4. A lower rail which is long mounted in the front-rear direction of the sheet mounting floor surface, and an upper rail which is slidably guided and supported on the lower rail in the longitudinal direction and is fixed to the seat body side. In the seat slide device, the 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, Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part. A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical protruding above the center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of the main body portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a main body of the lower rail is provided. The roller supported by the roller shaft is inserted between the step at the bottom of the part and the upper wall of the main part of the upper rail, and both sides of the roller are formed with a larger diameter than the central part. The roller is divided into right and left at a substantially central portion of the roller, an elastic body is inserted into a roller shaft at a dividing position at a substantially central portion of the roller, tapered surfaces are formed on both sides of the roller, and tapered surfaces on both sides of the roller are formed. Is mounted on a tapered surface which is formed at a step portion at the bottom of the lower rail body portion and which is inclined downward toward the center in the width direction. Door sliding device. 5. A lower rail which is long mounted in the front-rear direction of a sheet mounting floor surface, and an upper rail which is slidably guided and supported on the lower rail in a longitudinal direction and which is attached and fixed to the seat body side. In the seat slide device, the 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, Roller receiving steps are formed on both sides of the bottom of the main body, an arc surface is formed on the roller receiving steps, and a slider receiving part is formed on the lower surface side of the upper part. A main body having a substantially downward U-shape to be attached to the lower rail, and a vertical protruding above the center of an upper wall of the main body and protruding above an opening at an upper part of the lower rail. A slider receiving portion is formed at an upper end of an upper wall of the main body portion of the upper rail, a slider is inserted between the slider receiving portion of the lower rail and the slider receiving portion of the upper rail, and a main body of the lower rail is provided. The roller supported by the roller shaft is inserted between the step at the bottom of the part and the upper wall of the main part of the upper rail, and both sides of the roller are formed with a larger diameter than the central part. The roller is divided right and left at a substantially central portion of the roller, an elastic washer is inserted into a roller shaft at a dividing position of a substantially central portion of the roller, tapered surfaces are formed on both sides of the roller, and tapered surfaces on both sides of the roller are formed. Is mounted on a tapered surface inclined downward toward the center in the width direction formed at the step at the bottom of the body of the lower rail, and the roller Seat slide apparatus characterized by clearance is provided between the side wall of the main body portion of the side end portion and the upper rail.