JP2013154796A - Seat slide device for vehicle - Google Patents

Abstract

When a seat slide device is temporarily placed on the floor surface of a vehicle body, even if the upper rail is slid rearward, the rear end portion interferes with the vehicle body, the front through hole is not exposed, and the bolt cannot be inserted into the through hole.
SOLUTION: Installation bolts 3 and 5 are inserted into mounting holes 1d and 1e at a front end portion and a rear end portion of a lower rail 1 so that the lower rail 1 is directly coupled to a floor surface 9, and an upper rail 2 is slidable on the lower rail 1. The lower projection 2g is provided on the upper rail 2 so as to be lockable, while the lower projection 2d and 1e are exposed so that the upper rail 2 is moved to the foremost position or the rearmost position. A front stopper 1h and a rear stopper 1i with which 2g abuts are provided on the lower rail 1, and the rearward movement of the upper rail 2 is stopped at a stage before the lower projection 2g abuts against the rear stopper 1i. The second stopper 8 with which the protruding portion 7 abuts is combined with the installation bolt 5 that connects the lower rail 1 to the floor surface 9.
[Selection] Figure 1

Description

  The present invention relates to a vehicle seat slide device, and is adapted to cope with a case where a position of a bolt mounting hole for coupling a lower rail to a vehicle body overlaps a movement range of an upper rail.

  The vehicle seat slide device is configured by slidably providing an upper rail coupled with a seat on a lower rail installed on a floor surface, and stoppers are provided at front and rear positions of the lower rail to limit the sliding range of the upper rail. . The lower rail is attached to the floor of the vehicle body by directly inserting a bolt into a mounting hole formed in the lower rail, screwing the bolt into the floor and attaching the lower rail, and both ends of the lower rail in advance. There is an indirect mounting configuration in which one end of the leg portion is joined and a bolt is inserted into an attachment hole formed at the other end of the leg portion and attached to the floor surface.

  As a conventional vehicular seat slide device adopting the former direct mounting configuration, for example, one disclosed in Patent Document 1 is known. As shown in FIG. 3 of Patent Document 1, bolts 22 are inserted into through holes 1b at both ends of the lower rail 1 and are coupled to the floor surface. When the lower rail 1 is directly coupled to the floor in this way, the upper rail is slid back and forth with respect to the lower rail to expose the through hole 1b formed at the end of the lower rail, and the bolt 22 is attached to the through hole 1b. The bolts 22 are screwed into the floor surface through insertion.

  However, since the position adjustment range of the upper rail with respect to the lower rail is determined for each vehicle, the stopper is provided between the lower rail and the upper rail according to the position adjustment range. Therefore, when the upper rail is moved with the vehicle seat slide device temporarily placed on the floor of the vehicle body, the through hole of the lower rail cannot be exposed, and the bolt cannot be inserted into the through hole. The vehicle seat slide device may not be fixed to the floor surface.

  On the other hand, Patent Document 2 discloses a configuration in which the first stopper 31 is coupled to the first rail after the first rail and the second rail are coupled to the floor surface.

JP 2005-254832 A WO2009 / 048065

  However, if a configuration in which the first stopper is coupled after the first rail is coupled to the floor surface as in the vehicle seat slide device described in Patent Document 2, the first rail and the first rail are coupled before the coupling to the floor surface. Since the stopper is not provided between the two rails, the second rail assembled to the first rail slides off and may be separated. In addition, since the stopper is coupled after the first rail is coupled to the floor surface, it is complicated to perform two coupling operations of coupling the rail and coupling the stopper.

  Then, an object of this invention is to provide the vehicle seat slide apparatus which solved said subject.

According to the first aspect of the present invention, the lower rail is disposed along the front-rear direction of the vehicle body, mounting holes are provided in the vicinity of the front end portion and the rear end portion of the lower rail, and installation bolts are inserted into the mounting holes so that the lower rail It is directly coupled to the floor of the vehicle body, and the upper rail is slidably and lockably attached to the lower rail.
In the vehicle seat slide device in which a lower protrusion is provided on the upper rail, a front stopper and a rear stopper with which the lower protrusion abuts are provided on the lower rail, and a range of movement of the upper rail with respect to the lower rail is set.
The front stopper and the rear stopper have a movement range set by the lower projection contacting the front stopper or the rear stopper larger than the movement range of the upper rail after the lower rail is installed on the vehicle body. Arrange so that each mounting hole is exposed,
A second lower protrusion is provided on the upper rail,
In the movement to either one side of the upper rail, before the lower protrusion comes into contact with the front stopper or the rear stopper, the second stopper with which the second lower protrusion comes into contact with the lower rail via the stopper bolt. And the range of movement of the upper rail relative to the lower rail is set to a range of actual use.

  According to this invention, when the lower rail is joined to the floor surface, the second stopper is not attached to the lower rail, so that the upper rail is largely moved to one side in the front-rear direction to expose the other side attachment hole. Insert the installation bolt into the mounting hole and connect the other side of the lower rail to the floor, then move the upper rail to the other side, and insert the installation bolt into the mounting hole on one side of the lower rail to connect the one side of the lower rail. Connect to the floor. Then, the second stopper is coupled to one side of the lower rail via a stopper bolt.

  Since the second stopper is provided, the upper rail moves between the time when the lower protrusion comes into contact with either the front stopper or the rear stopper and the time when the second lower protrusion comes into contact with the second stopper. The movement range of the upper rail with respect to the lower rail is set as the movement range actually used. Therefore, before the lower rail is installed on the vehicle, the movement range of the upper rail with respect to the lower rail is between the front stopper and the rear stopper, and can be set to a movement range wider than the movement range.

The invention according to claim 2 is the vehicle seat slide device according to claim 1,
The installation bolt is also used as a stopper bolt for coupling the second stopper to the lower rail.

  According to this invention, since the installation bolt for coupling the lower rail to the floor surface and the stopper bolt for coupling the second stopper to the lower rail are combined, the lower rail can be simply screwed into the floor surface. To the floor surface and the second stopper to the lower rail are simultaneously performed.

The invention according to claim 3 is the vehicle seat slide device according to claim 1 or 2,
As a configuration for locking the upper rail with respect to the lower rail, a lock means for inserting and removing a lock claw is provided in a lock hole formed in the lower rail and the upper rail,
In the vicinity of the mounting hole in the second stopper, an uneven fitting portion that supports the second stopper so as to be rotatable around an axis substantially parallel to the axis of the mounting hole is provided, and the second lower protrusion The contact surface of the second stopper with which the portion abuts has an arc shape centered on the concave-convex fitting portion.

  According to this invention, since the contact surface of the second stopper with which the second lower protrusion comes into contact has an arc shape centered on the concave-convex fitting portion, when the second stopper is coupled to the lower rail, Even if the stopper rotates about the concave / convex fitting portion, the second lower protrusion and the upper rail that are stopped by contacting the second stopper are positioned with high accuracy with respect to the lower rail.

  According to the vehicle seat slide device of the first aspect, since the second stopper is not attached to the lower rail when the lower rail is coupled to the floor surface, the upper rail is largely moved to one side in the front-rear direction, and the other The other side of the lower rail can be connected to the floor surface by exposing the mounting hole on the side and a mounting bolt inserted through the mounting hole, and the upper rail can be moved back and forth in the range of movement of the slide used as a vehicle seat. Even when the other side of the lower rail cannot be coupled to the floor surface by moving the installation bolt through the mounting hole without exposing the mounting hole on the other side in the state of moving to either side, the second stopper Therefore, the other side of the lower rail can be coupled to the floor surface. In addition, since the front stopper and the rear stopper are provided in advance before the lower rail is joined to the floor surface, the upper rail does not fall out of the lower rail, and the workability is good.

  According to the vehicle seat slide device of the second aspect, since the installation bolt and the stopper bolt are combined, the number of parts can be reduced and the number of assembly steps can be reduced.

  According to the vehicle seat slide device of the third aspect, when the second lower projection comes into contact with the second stopper and the upper rail stops, the upper rail is positioned with high accuracy with respect to the lower rail. The hole and the lock hole of the upper rail coincide with each other, and the locking action of locking the upper rail by inserting the lock claw into these lock holes is surely performed.

1 is a plan view of a vehicle seat slide device, and FIG. 2B is a front sectional view (embodiment). The cross-sectional view of a vehicle seat slide device (embodiment). Front sectional drawing which expands and shows the principal part of the vehicle seat slide apparatus (embodiment). The top view which expands and shows the principal part of the vehicle seat slide apparatus (embodiment). The perspective view which expands and shows the principal part of the vehicle seat slide apparatus (embodiment). Explanatory drawing which shows the installation procedure of a lower rail (embodiment).

Embodiments of a vehicle seat slide device according to the present invention will be described below.
(Constitution)
FIG. 1A is a plan view when the upper rail is located at the rearmost (right side) of the vehicle body with respect to the lower rail, and FIG. 1B is a front sectional view. An upper rail 2 for attaching a seat is assembled to a lower rail 1 fixed to a floor surface 9 of the vehicle. As shown in FIG. 2, the lower rail 1 is substantially U-shaped and has a basic cross-sectional portion composed of a lower surface portion 1a and a side surface portion 1b, and a portion extending downward from the upper end of the side surface portion 1b toward the central portion. The downward bent portion 1c is formed. On the other hand, the upper rail 2 has a substantially inverted U shape and is formed with an upward bent portion 2c extending upward from the lower end of the side surface portion 2b in a basic cross-sectional portion composed of an upper surface portion 2a and a side surface portion 2b. . And between the side surface portion 1b of the lower rail 1 and the upward bent portion 2c of the upper rail 2 with the upward bent portion 2c of the upper rail 2 entering from the lower side between the side surface portion 1b of the lower rail 1 and the downward bent portion 1c. In the state, a roller (not shown) is interposed while being held by a retainer (not shown).

  As shown in FIG. 1, the lower rail 1 is disposed along the longitudinal direction of the vehicle body, and mounting holes 1d, 1e, 1f are provided in the vicinity of the front end portion and the rear end portion of the lower rail 1, and the mounting holes 1d, 1e are provided. , 1f are inserted through the installation bolts 3, 5 and 6 so that the lower rail 1 is directly coupled to the floor surface. The upper rail 2 is slidably provided on the lower rail 1 as described above.

  Locking means is provided to lock the upper rail 2 with respect to the lower rail 1. That is, as shown in FIGS. 2 and 3, a bearing bracket 13 is fixed to the upper surface portion 2 a of the upper rail 2 via a pair of rivets 11, and the pair of bearing portions 12 formed on the bearing bracket 13 are connected to the upper rail. The shaft portions 14 respectively fitted in the two slits 2d formed in the side surface portion 2b of the two and projecting in the opposite directions from the pair of bearing portions 12 are inserted into the bearing portions 4a of the lock arm 4, respectively. Four lock claws 4b are formed in the lower part of the horizontal direction. A spring (not shown) for urging the lock arm 4 counterclockwise in FIG. 2 to lock the upper rail 2 is provided, and the lock arm 4 is rotated clockwise against the urging force of the spring to release the lock. A lever 4 c is integrally formed on the upper portion of the lock arm 4.

  On the other hand, as shown in FIG. 2, four lock holes 2e and 2f for inserting and removing four lock claws 4b of the lock arm 4 are formed in the side surface portion 2b and the upward bent portion 2c of the upper rail 2. A plurality of lock holes 1g are formed in the downward bent portion 1c of the lower rail 1 along the length direction thereof. Here, the lock claw 4b, the lock holes 2e and 2f, and the lock hole 1g are formed at the same pitch.

  In order to regulate the amount of movement of the upper rail 2 relative to the lower rail 1, the following configuration is provided. A lower protrusion 2g is formed on the upper rail 1. As shown in FIG. 2, the lower protrusion 2g is formed at two portions on the left and right sides by extending downward from the side surface 2b to the portion where the upward bent portion 2c is formed without being bent upward. ing. The position of the lower protrusion 2g in the length direction is set closer to the rear than the middle portion of the upper rail 1 in the length direction, as shown in FIG.

  A front stopper 1h and a rear stopper 1i with which the lower protrusion 2g abuts are provided on the lower rail 1. The front stopper 1h and the rear stopper 1i are formed by obliquely raising and lowering the lower surface portion 1a of the lower rail 1 as shown in FIG. The longitudinal positions of the front stopper 1h and the rear stopper 1i are set in the vicinity of the front end and the vicinity of the rear end of the lower rail 1, as shown in FIGS. The positions of the front stopper 1h and the rear stopper 1i are such that the respective mounting holes 1d, 1e, and 1f are exposed without being hidden by the upper rail 2 when the lower protrusion 2g contacts the front stopper 1h and the rear stopper 1i. Has been placed. This is for the purpose of performing the original mounting operation of the lower rail 1 in which the installation bolts are inserted into the mounting holes 1d and 1e and screwed into the floor surface 9. In this embodiment, the mounting holes 1f and the installation bolts 6 are provided. In this embodiment, the installation bolts 6 are added to improve the mounting strength of the lower rail 1.

  On the other hand, in the vehicle seat slide device, generally, even when the upper rail 2 is moved to the rearmost end position, the upper rail 2 is set so as not to protrude from the end of the lower rail 1 as shown in FIG. This is because a belt anchor of the seat belt is provided on the rear side of the vehicle seat, and thus a larger upward load acts on the rear side of the upper rail 2 via the seat belt at the time of collision. In order to stop the movement of the upper rail 2 toward the rear side at a stage before the lower protrusion 2g comes into contact with the rear stopper 1i, a second lower protrusion 7 is provided on the upper rail 2 as shown in FIG. Is provided with a second stopper 8 against which the second lower projection 7 abuts. The structure of the 2nd downward projection part 7 and the 2nd stopper 8 is demonstrated in detail based on FIGS. The second lower protrusion 7 is a substantially lateral L-shape composed of a horizontal portion 7a extending along the length direction of the upper rail 2 and a vertical portion 7b protruding downward, and is a convex portion formed on the upper surface of the horizontal portion 7a. The second lower protrusion 7 is coupled to the inside of the upper rail 2 by inserting 7c into the mounting hole 2h of the upper surface portion 2a of the upper rail 2 and caulking. On the other hand, the second stopper 8 is formed in an L shape comprising a horizontal portion 8a and a vertical portion 8b protruding upward, and a mounting hole 8c for inserting the installation bolt 5 in the vicinity of the rear end portion of the horizontal portion 8a. In the vicinity of the mounting hole 8c and between the mounting hole 8c and the vertical portion 8b, a cylindrical convex portion 8d that protrudes downward is formed by embossing. A fitting hole 1j is formed in the lower surface portion 1a of the lower rail 1 so that the cylindrical convex portion 8d can be fitted without any gap. The second stopper 8 is substantially parallel to the axis of the mounting hole 8c with respect to the lower rail 1. A concave-convex fitting portion is formed which is supported so as to be rotatable around a central axis. In the vertical portion 8b, the contact surface 8e of the second stopper 8 with which the vertical portion 7b of the second lower protrusion 7 abuts is set in an arc shape with a radial dimension R centered on the concave-convex fitting portion. ing.

  The installation bolt 5 is inserted into the mounting hole 8c of the second stopper 8 and the mounting hole 1e of the lower rail 1 and is screwed to the floor surface 9 of the vehicle body. As a stopper bolt for providing the second stopper 8 on the lower rail 1, The installation bolt 5 is also used. Reference numeral 10 denotes a bolt for connecting a side bracket (not shown) for supporting the seat to the upper rail 2.

The front stopper 1h and the rear stopper 1i have a movement range set by the lower protrusion 2g coming into contact with the front stopper 1h or the rear stopper 1i. The movement range of the upper rail 2 after the lower rail 1 is installed on the vehicle body. The mounting holes 1d, 1e, and 1f are arranged so as to be exposed. Further, in the rearward movement of the upper rail 2, the second stopper 8 with which the second lower protrusion 7 abuts before the lower protrusion 2g abuts with the rear stopper 1i is coupled to the lower rail 1 via the installation bolt 5. The range of movement of the upper rail 2 with respect to the lower rail 1 is set to the actual use range.
(Function)
Next, the operation of the vehicle seat slide device will be described.

  According to this invention, in order to attach the vehicle seat slide device to the floor surface of the vehicle body, the second stopper 8 is attached to the lower rail 1 when the lower rail 1 is coupled to the floor surface 9 as shown in FIG. Therefore, the upper rail 2 is largely moved rearward until the lower projection 2g comes into contact with the rear stopper 1i to expose the front mounting hole 1d, and the installation bolt 3 is inserted into the mounting hole 1d. The front side of the lower rail 1 screwed into the surface 9 is joined to the floor surface 9. Thereafter, as shown in FIG. 6 (b), the upper rail 2 is moved forward to a position where the second stopper 8 can be attached, and in this embodiment, the installation bolt 6 can be inserted into the attachment hole 1f. The bolt 5 is inserted into the mounting hole 8c of the second stopper 8 and the mounting hole 1e of the lower rail 1 and screwed into the floor surface 9. Further, the installation bolt 6 is inserted into the mounting hole 1f and screwed into the floor surface 9 to be behind the lower rail 1. Join the side to the floor 9.

  Since the second stopper 8 is provided, the upper rail 2 moves between the time when the lower protrusion 2g comes into contact with the front stopper 1h and the time when the second lower protrusion 7 comes into contact with the second stopper 8. The movement range of the upper rail 2 is smaller than the movement range in which the lower protrusion 2g moves between the front stopper 1h and the rear stopper 1i.

  According to this vehicle seat slide device, since the second stopper 8 is not attached to the lower rail 1 when the lower rail 1 is coupled to the floor surface 9, the upper rail 2 is largely moved rearward to attach the front mounting hole 1d. And the mounting bolt 3 is inserted into the mounting hole 1d so that the front side of the lower rail 1 can be coupled to the floor surface 9, and the upper rail 2 is located on the rear side in the slide movement range used as a vehicle seat. Even if the front mounting hole 1d is not exposed and the installation bolt 3 is inserted into the mounting hole 1d and the front side of the lower rail 1 cannot be coupled to the floor surface 9 in the state of moving to Since the stopper 8 is configured to be retrofitted, the front side of the lower rail 1 can be coupled to the floor surface 9. Further, since the front stopper 1h and the rear stopper 1i are provided in advance before the lower rail 1 is coupled to the floor surface 9, the upper rail 2 does not fall out of the lower rail 1 and the workability is good.

  According to the present invention, since the installation bolt 5 for connecting the lower rail 1 to the floor surface and the stopper bolt for connecting the second stopper 8 to the lower rail 1 are combined, the installation bolt 5 is attached to the floor surface. Only by screwing, the coupling of the lower rail 1 to the floor surface and the coupling of the second stopper 8 to the lower rail 1 are simultaneously performed.

  According to this vehicle seat slide device, since the installation bolt 5 and the stopper bolt are combined, the number of parts can be reduced and the number of assembly steps can be reduced.

  According to the present invention, the contact surface 8e of the second stopper 8 with which the second lower protrusion 7 abuts has an arc shape centered on the concave-convex fitting portion, so the mounting holes 1e, 8c and the installation bolt 5 When the second stopper 8 is coupled to the lower rail 1 due to the clearance of the second stopper 8, even if the second stopper 8 rotates around the concave / convex fitting portion, the second lower protrusion 7 that is brought into contact with the second stopper 8 and stopped. The upper rail 2 is positioned with high accuracy with respect to the lower rail 1.

  According to this vehicle seat slide device, when the second lower protrusion 7 abuts against the second stopper 8 and the upper rail 2 stops, the upper rail 2 is positioned with high accuracy with respect to the lower rail 1. The lock hole 1g of the lower rail 1 and the lock holes 2e, 2f of the upper rail 2 coincide with each other, and the lock action of locking the upper rail 2 by inserting the lock claw 4b into these lock holes is surely performed.

  In the present embodiment, the movement of the upper rail 2 to the rear side is stopped at a stage before the lower projection 2g comes into contact with the rear stopper 1i. Therefore, the second stopper with which the second lower projection 7 comes into contact with the lower rail 1 is used. However, in order to stop the movement of the upper rail 2 toward the front side before the lower projection 2g comes into contact with the front stopper 1h, a second stopper with which the second lower projection comes into contact with the lower rail 1 is provided. You may do it. Moreover, although the 2nd stopper 8 and the lower rail 1 are couple | bonded with the floor surface 9 with the single installation volt | bolt 5, you may couple | bond the 2nd stopper 8 and the lower rail 1 with a separate volt | bolt. Furthermore, although the contact surface 8e of the second stopper 8 has an arc shape centered on the concave-convex fitting portion, it may have a planar shape.

DESCRIPTION OF SYMBOLS 1 ... Lower rail 1d, 1e ... Mounting hole 1g, 2e, 2f ... Lock hole 1h ... Front stopper 1i ... Rear stopper 1j ... Fitting hole (uneven fitting part)
2 ... Upper rail 2g ... Lower projection 3,5 ... Installation bolt (stopper bolt)
4 ... Lock arm (locking means)
4b ... Lock claw 7 ... Second downward projection 8 ... Second stopper 8d ... Convex part (concave / convex fitting part)
8e ... Contact surface

Claims (3)

The lower rail is arranged along the front-rear direction of the vehicle body, mounting holes are provided in the vicinity of the front end and rear end of the lower rail, and installation bolts are inserted into the mounting holes so that the lower rail is directly coupled to the vehicle floor. The upper rail is slidably and lockably attached to the lower rail,
In the vehicle seat slide device in which a lower protrusion is provided on the upper rail, a front stopper and a rear stopper with which the lower protrusion abuts are provided on the lower rail, and a range of movement of the upper rail with respect to the lower rail is set.
The front stopper and the rear stopper have a movement range set by the lower projection contacting the front stopper or the rear stopper larger than the movement range of the upper rail after the lower rail is installed on the vehicle body. Arrange so that each mounting hole is exposed,
A second lower protrusion is provided on the upper rail,
In the movement to either one side of the upper rail, before the lower protrusion comes into contact with the front stopper or the rear stopper, the second stopper with which the second lower protrusion comes into contact with the lower rail via the stopper bolt. And a moving range of the upper rail with respect to the lower rail is set to a use range for actual use. The vehicle seat slide device according to claim 1,
The vehicle seat slide device, wherein the installation bolt is also used as a stopper bolt for coupling the second stopper to the lower rail. The vehicle seat slide device according to claim 1 or 2,
As a configuration for locking the upper rail with respect to the lower rail, a lock means for inserting and removing a lock claw is provided in a lock hole formed in the lower rail and the upper rail,
In the vicinity of the mounting hole in the second stopper, an uneven fitting portion that supports the second stopper so as to be rotatable around an axis substantially parallel to the axis of the mounting hole is provided, and the second lower protrusion The vehicle seat slide device characterized in that the contact surface of the second stopper with which the portion abuts has an arc shape centered on the concave-convex fitting portion.

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