JP2016007948A - Seat rail device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat rail device which can prevent rattling of an upper rail by pressing a lower rail.SOLUTION: A seat rail device 100 is attached to a flip-up type vehicular seat and moves the seat forwards and rearwards. The seat rail system 100 includes: a slide rail 20 having an upper rail 22 to which the vehicular seat is attached and a lower rail 21 for slidably supporting the upper rail; a flip-up member 10 which is fixed to the lower rail of the slide rail and a vehicle, and has a pivot part which so rotates as to flip up the vehicular seat which is attached to the slide rail; and a roller 40. The roller is so located between a first roller contact part directly or indirectly extending from the upper roller and a second roller contact part formed on the flip-up member as to be brought into contact with said roller contact parts.

Description

  The present invention relates to a seat rail device.

  Various types of seat rail devices having slide rails that are slidable forward and backward for vehicles have been proposed that are installed in so-called flip-up type vehicle seats that store the vehicle seats on the side of an automobile. Reference 1).

  The flip-up type vehicle seat is provided with a flip-up device having a flip-up mechanism on the outer side, and the flip-up device always exerts a force in the direction of flipping up so that the user can easily lift the vehicle seat. Assists you to jump up. On the other hand, a fixing mechanism is provided on the inner side to fix the vehicle seat horizontally during use. Therefore, in a state where the vehicle seat is fixed horizontally, the slide rail of the outer side seat rail device is moved to the upper rail and the flip-up device connected to the vehicle seat by the assisting force by the flip-up. The force is continuously applied in different directions to the connected lower rail, and there is a possibility that the upper rail and the lower rail may be twisted.

  Due to this twisting of the slide rail, the positional relationship between the upper rail and the lower rail may be disrupted, and the sliding resistance between the upper rail and the lower rail may increase, or indentations may be generated due to the slide balls and rollers disposed inside. There was sex. When the indentation is generated, the sliding resistance of the slide rail further increases.

  As a technique for solving such a problem, the fixed rail of the outer slide rail is formed by projecting a first overhang member on the movable rail side of the slide rail, and the first overhang is formed on the movable rail of the outer slide rail. A second overhang member is formed so as to protrude from the movable rail, and a roller rotatably supported on one of the first overhang member and the second overhang member 32 has a first overhang member and a second arbor hang. A technique that is always in contact with the other member is disclosed (Patent Document 2).

  However, such a technique may be costly because the assembly of the overhang member and the roller is complicated. Further, since the pivot portion is between the outer side seat rail and the in-side slide rail, the force applied to the slide rail is complicated, and an irregular force may be applied to the roller. In addition, since the lower rail is directly fixed to the vehicle, when an unintended large force is applied to the slide rail, all the force is concentrated on the first overhang member and comes into contact with the first overhang member. There was a possibility of damaging the roller. In addition, since a roller having a bearing must be used, there is a problem that the cost is high in this respect. Furthermore, since the roller shaft is fixed, the roller must be moved by the same distance as the slide. Therefore, there has been a problem that a length longer than the length by which the first overhang member and the second overhang member slide is required.

JP 2013-244848 A JP 2006-327501 A

  Accordingly, the present invention has been made in view of these problems, and an object of the present invention is to facilitate assembly and prevent an increase in sliding resistance. In addition, the first overhang member and the second overhang member can be prevented. An object of the present invention is to provide a seat rail device that can shorten the length of an overhang member.

  In order to achieve the above-mentioned object, the present invention employs the following means.

The seat rail device according to the present invention is
In a seat rail device that is attached to a flip-up vehicle seat and moves the vehicle seat back and forth,
A slide rail having an upper rail to which the vehicle seat is attached, and a lower rail that slidably supports the upper rail;
A flip-up member having a pivot part fixed to the lower rail of the slide rail and the vehicle and pivoting in a direction to flip up the vehicle seat attached to the slide rail;
A roller, and
The roller is disposed in contact between a first roller contact portion extending directly or indirectly from the upper rail and a second roller contact portion formed on the flip-up member. And

  The seat rail device according to the present invention includes both the first roller contact portion connected to the upper rail and the second roller contact portion provided on the flip-up member to which the lower rail is fixed. By disposing the abutting rollers, the relative positions of the first roller abutting portion and the second roller abutting portion are fixed, and as a result, the relative positions of the upper rail and the lower rail are positioned. For this reason, even if force is applied to the slide rail by the flip-up member, the possibility that the upper rail and the lower rail are twisted can be reduced. Therefore, it is possible to reduce the increase in sliding resistance, and it is possible to reduce the occurrence of indentation due to balls or the like used in the slide rail. Moreover, even if a strong force is applied from either the first roller contact portion or the second roller contact portion, since the roller is supported by any one, it is prevented that a large force is applied to the roller shaft, It is possible to prevent the roller shaft from being bent or broken. Moreover, since a substantially equal force is applied to the first roller contact portion and the second roller contact portion, it is possible to reduce the possibility that only one roller contact portion is greatly worn.

  Also, in the seat rail device according to the present invention, a roller shaft that is attached to the first roller contact portion or the second roller contact portion and includes a long hole that can move the roller shaft of the roller in a sliding direction. A roller guide member having a guide hole may be provided. By adopting such a configuration, a roller having a fixed roller shaft can be used without using a roller having a bearing.

  Furthermore, in the seat rail device according to the present invention, the diameter of the roller is the same as or slightly longer than the interval between the first roller contact portion and the second roller contact portion. You may do. By adopting such a configuration, the first roller contact portion and the second roller contact portion can be supported regardless of the position of the roller.

  Furthermore, in the seat rail device according to the present invention, the second roller contact portion may be provided with an over-movement preventing protrusion for preventing over-movement of the roller. By adopting such a configuration, it is possible to prevent the roller from moving beyond a distance that should be originally moved. Therefore, the possibility that the upper rail is excessively moved can be reduced. Moreover, possibility that a roller guide member will be damaged can be reduced.

  Furthermore, in the seat rail device according to the present invention, the pivot portion of the flip-up member may be on the outer side with respect to the slide rail, and the roller may be on the inner side with respect to the slide rail. By adopting such a configuration, the entire seat rail device can be disposed below the vehicle seat. By adopting such a configuration, even when an excessive force is applied, the lower rail is not directly fixed to the vehicle, so that the force is also distributed to the flip-up mechanism, and the first roller contact portion and the second roller contact The possibility that the contact portion is damaged can be reduced.

  According to the seat rail device according to the present invention, it is possible to provide a seat rail device that can be easily assembled and can prevent an increase in sliding resistance.

Drawing 1 is a perspective view showing seat rail device 100 concerning an embodiment. FIG. 2 is a front view of the seat rail device 100 according to the embodiment. 3A and 3B are side views showing the movement of the seat rail device 100 according to the embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations. Moreover, the same or similar code | symbol is attached | subjected to the corresponding component in each figure. In the following description, “front”, “rear”, “right”, and “left” indicate directions of arrows in FIG. The “inner side” refers to the center side of the vehicle when the seat rail device is attached to the vehicle, and the “outer side” refers to the side surface side of the vehicle.

  The seat rail device 100 according to the present embodiment is used for a so-called flip-up type vehicle seat (not shown) that is flipped up and stored on the side of the vehicle, and the vehicle seat can be slid in the front-rear direction. It is something to support. As shown in FIGS. 1 and 2, the seat rail device 100 mainly includes a flip-up member 10, a slide rail 20 having a lower rail 21 and an upper rail 22 having a sliding function in the front-rear direction of the vehicle, a lower rail 21, A first roller contact portion 14, a second roller contact portion 24, a roller 40, and a roller guide member 30 that guides the roller 40 for suppressing rattling of the upper rail 22 are provided.

  The flip-up member 10 is configured to rotate the lower rail fixing portion in a direction in which the vehicle is flipped up with respect to the vehicle fixing portion 11 attached to the vehicle body, the lower rail fixing portion 12 to which the lower rail 21 is directly or indirectly attached, and the vehicle fixing portion 11. A pivot portion 13 is provided that is pivotally supported. The pivot portion 15 is disposed on the outer side with respect to the slide rail 20. The lower rail fixing portion 12 is provided with a first roller contact portion 14 formed to extend from the position where the lower rail 21 is fixed to the inner side, and the first roller contact portion 14 will be described later. The roller 40 is in contact.

  The slide rail 20 mainly includes a lower rail 21 and an upper rail 22. Balls and rollers are interposed between the upper rail 22 and the lower rail 21, and the upper rail 22 is in the front-rear direction with respect to the lower rail 21. It is assembled so that it can slide freely. On the other hand, a seat frame 50 to which a vehicle seat is attached is attached to the upper rail 22. For this reason, when the upper rail 22 slides with respect to the lower rail 21, the vehicle seat is slid in the front-rear direction. The configurations of the upper rail 22 and the lower rail 21 are not particularly limited as long as the upper rail 22 can be slidably supported back and forth. Various functions such as a stopper that prevents sliding in the front-rear direction and a control device that controls sliding movement may be added to the slide rail 20 as appropriate.

  The first roller contact portion 14 is formed on the lower rail fixing portion 12 so as to extend from the lower rail 21 toward the inner side. The bottom surface 14a of the first roller contact portion 14 is formed as a flat surface so that the roller 40 can rotate. Further, the first roller contact portion 14 is provided with over-movement prevention protrusions 25 that prevent the roller 40 from over-traveling beyond a predetermined location before and after the moving part.

  The second roller contact portion 24 is formed so as to extend from the upper rail 22 to the inner side integrally with the upper rail 22 or by another member fixed to the upper rail 22 as shown in FIG. . The second roller contact portion 24 is disposed so as to be parallel to the first roller contact portion 14. The second roller abutting portion 24 is disposed away from the first roller abutting portion 14 by the same length as the diameter of the roller 40, and the roller 40 includes the first roller abutting portion 14 and the second roller. It arrange | positions so that it can rotate, contacting both of the contact parts 24. FIG. Further, an attachment hole 24a for attaching a roller guide member 30 described later and a positioning hole 24b for positioning the roller guide member 30 so as not to move are provided.

  The roller guide member 30 is a member that supports the axis of the roller 40 so as to be movable and guides the rotation direction of the roller 40. As shown in FIG. Is formed. Further, a part of the roller 40 protrudes below and above the roller guide member 30 and is formed so that it can directly contact the first roller contact portion 14 and the second roller contact portion 24, respectively. On the right side surface and the left side surface, a roller shaft guide hole 31 is formed which is formed with a width approximately equal to the roller shaft 41 in the vertical direction and a long hole whose length corresponds to the distance the roller shaft 41 moves in the front-rear direction. The roller shaft 41 is inserted. Therefore, the roller 40 can move only in the front-rear direction. Further, the roller guide member 30 is formed to extend upward, and has a hook-like hook-shaped fixing portion 32 that can be fixed only by being fitted into the mounting hole 24a described above, and the positioning hole 24b described above. Positioning projections 33 are provided to prevent rattling in the front, rear, left, and right directions by being inserted, and the roller guides are positioned by inserting these hook-shaped fixing portions 32 and positioning projections 33 into the respective holes. The member 30 can be fixed to the second roller contact portion 24.

  The roller 40 has a roller shaft 41 in which a shaft portion of a cylindrical rotating body protrudes on both sides. The roller shaft 41 and the rotating body may be fixed, or the shaft and the rotating body itself may be formed to be rotatable by a bearing or the like, but a bearing is not used from the viewpoint of cost and ease of manufacture. Things can be used. The roller 40 has a diameter that is the same as or slightly longer than the distance between the first roller contact portion 14 and the second roller contact portion 24, and the roller 40 has the first roller contact portion 14 and the second roller contact portion. It is almost completely abutted with the contact portion 24, and is attached so that there is no backlash. The material of the roller 40 is not limited to plastic, urethane, metal, or the like, but plastic or urethane that can buffer the applied force may be used.

  The seat rail device 100 configured as described above is movable as follows. FIG. 3A shows a side view of the state in which the upper rail 22 is disposed at the rearmost position, that is, the state in which the vehicle seat is disposed at the rearmost position. In this state, the roller shaft 41 of the roller 40 is in the front end portion of the roller shaft guide hole 31 or in the vicinity of the end portion, and the roller 40 is in contact with or disposed in the vicinity of the front excessive movement prevention protrusion 25. Has been. When the upper rail 22 is slid forward relative to the lower rail 21 from this state, the roller shaft 41 moves rearward through the roller shaft guide hole 31, and the roller 40 rotates in the direction of the arrow while the roller guide member 30 Move back through the interior space. At this time, the roller 40 rotates forward on the first roller contact portion 14 and rotates forward on the second roller contact portion 24. That is, in the relationship with the first roller contact portion 14, the roller 40 moves relatively forward, and in the relationship with the second roller contact portion 24, the roller 40 moves relatively backward. . By rolling both the first roller abutting portion 14 and the second roller abutting portion 24 in this manner, it is sufficient that the distance roller about half of the moving distance of the lower rail 21 and the upper rail 22 is rolled. Therefore, the movement part of the 1st roller contact part 14 and the 2nd roller contact part 24 should just have the movement part of the length of the half of the intended movement distance. As shown in FIG. 3B, the roller shaft 41 is disposed at the rear end portion of the roller shaft guide hole 31 or in the vicinity of the end portion. Contact with the movement preventing protrusion 25 prevents the roller 40 from moving more than necessary, so that the roller 40 is disposed in the foremost position. When the upper rail 22 is moved rearward, the movement reverse to that described above is performed.

  According to the seat rail device 100 described above, as shown in FIG. 2, the lower rail 21 of the seat rail device 100 is rotated counterclockwise in FIG. 1 by the force constantly applied in the flip-up direction A by the flip-up member 10. A force is applied to the upper rail 22 and a force is applied to the seat frame 50 in the direction of the arrow B even though the inner side seat frame 50 is fixed to the vehicle. As a result, a clockwise rotation force is applied to the upper rail 22. The second roller contact portion 24 is applied with a force in the direction of arrow C. Thereby, there is a possibility that the slide rail 20 is bent and rattling occurs, but since the roller 40 is disposed between the first roller contact portion 14 and the second roller contact portion 24, Since the leftward rotation force and the rightward rotation force applied to the upper rail 22 can be supported, this bending can be suppressed. Therefore, the play of the slide rail 20 can be reduced, and the possibility that the sliding resistance increases can be reduced. As a result, the life of the seat rail device 100 can be extended. Further, by performing this support with the roller 40, the upper rail 22 and the lower rail 21 can be slid without any trouble.

  In addition, according to the seat rail device 100 according to the present embodiment, the pivot portion 13 of the flip-up member 10 is on the outer side of the slide device, and the lower rail fixing portion 12 is disposed between the slide rail 20. And since the lower rail 21 is attached to this lower rail fixing | fixed part 12, compared with the case where the lower rail 21 is being fixed to the vehicle main body even if it is a case where big power which is not intended is applied to the slide rail 20, it is lower rail. Since the fixing portion 12 cushions, the possibility that the roller 40, the first roller contact portion 14, the second roller contact portion 24, and the slide rail 20 itself are damaged can be reduced.

  The present invention is not limited to the above-described embodiments, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

  In the above embodiment, the roller guide member 30 is attached to the second roller contact portion 24, but may be provided to the first roller contact portion 14.

  Moreover, in the said embodiment, although the example in which the two roller guide members 30 are attached to the seat rail apparatus 100 is represented by drawing, the quantity of the roller guide members 30 attached is not limited.

  As shown in the above-described embodiment, the present invention can be industrially used as a seat rail device for attaching a vehicle seat.

10 ... Bounce-up member, 11 ... Vehicle fixing part, 12 ... Lower rail fixing part,
13 ... Pivot part, 14 ... First roller contact part, 15 ... Pivot part,
20 ... slide rail, 21 ... lower rail, 22 ... upper rail,
24 ... second roller contact portion, 24a ... mounting hole, 24b ... positioning hole,
25 ... excessive movement preventing projection, 30 ... roller guide member, 31 ... roller shaft guide hole,
32 ... hook-shaped fixing part, 33 ... positioning protrusion, 40 ... roller,
41 ... Roller shaft, 50 ... Seat frame, 100 ... Seat rail device

Claims (5)

In a seat rail device that is attached to a flip-up vehicle seat and moves the vehicle seat back and forth,
A slide rail having an upper rail to which the vehicle seat is attached, and a lower rail that slidably supports the upper rail;
A flip-up member having a pivot part fixed to the lower rail of the slide rail and the vehicle and pivoting in a direction to flip up the vehicle seat attached to the slide rail;
A roller, and
The roller is disposed in contact between a first roller contact portion extending directly or indirectly from the upper rail and a second roller contact portion formed on the flip-up member. A seat rail device.   A roller guide member that is attached to the first roller contact portion or the second roller contact portion and has a roller shaft guide hole that is a long hole that can move the roller shaft of the roller in a sliding direction. The seat rail device according to claim 1.   3. The sheet according to claim 1, wherein a diameter of the roller is formed to be equal to or slightly longer than a distance between the first roller contact portion and the second roller contact portion. Rail device.   The seat rail device according to any one of claims 1 to 3, wherein the second roller abutting portion is provided with an excessive movement preventing protrusion for preventing excessive movement of the roller.   5. The seat rail device according to claim 1, wherein a pivot portion of the flip-up member is on an outer side with respect to the slide rail, and the roller is on an inner side with respect to the slide rail.

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