JP4317039B2 - Seat slide device - Google Patents

Description

  The present invention includes a lower rail provided on the floor side, an upper rail that is movably engaged with the lower rail, and a seat is provided, and a lock mechanism that prohibits the movement of the upper rail relative to the lower rail, and The present invention relates to a seat slide device that slides on a floor.

  As an example of a seat slide device provided in a vehicle or the like, there is a configuration as shown in FIG. In the figure, an upper rail 3 provided with a seat 5 is movably engaged with a lower rail 1 provided on the floor side. The lock mechanism 7 prohibits the movement of the upper rail relative to the lower rail. 7 includes a plurality of lock teeth 9 formed on the lower rail 1 along the moving direction thereof, a lock plate 11 provided on the side of the upper rail 3 and capable of engaging and disengaging the lock teeth 9, and a lock mechanism. It comprises urging means (not shown) for urging the plate 11 in a direction to engage the lock teeth 9.

  And when this seat slide apparatus is provided in the front seat of a 2-door vehicle, for example, in order to improve the boarding / alighting property to a rear seat, a walk-in mechanism may be provided. In the figure, the seat 5 is urged forward by using a coil spring 13 having one end locked to the floor and the other end locked to the upper rail 3.

  The operation of the above configuration will be described. Normally, in the lock mechanism 7 of the seat slide device, the lock plate 11 is engaged with the lock teeth 9 by an urging means (not shown), and the movement of the upper rail 3 is prohibited.

  When changing the seat position, the lock plate 11 of the lock mechanism 7 is operated with the passenger seated on the seat 5 to release the engagement between the lock plate 11 and the lock teeth 9. Then, the upper rail 3 can move with respect to the lower rail 1. The occupant moves to the desired seat position and releases the operating force on the lock plate 11. Then, the lock plate 11 is again engaged with the lock teeth 9 and the movement of the upper rail 3 is prohibited.

In a state where no occupant is seated, the lock plate 11 of the lock mechanism 7 is operated to release the engagement between the lock plate 11 and the lock teeth 9. Then, due to the urging force of the coil spring 13, the upper rail 3 moves to the foremost sliding position, and the boarding / exiting property to the rear seat is improved (see, for example, Patent Document 1).
JP 2003-237432 A (3rd page, 4th page, FIG. 1)

  In recent years, in order to improve the ease of getting on and off the third seat of a three-seat vehicle composed of a front seat, a second seat, and a third seat, a walk-in mechanism as shown in FIG. It is requested to have.

However, the slide amount of the seat track device for the second seat of the three-row vehicle is longer than the slide amount of the seat slide device for the front seat. For this reason, there are the following problems.
(1) When the sliding amount is short, the coil spring 13 can be arranged so that it cannot be seen from the outside even if the seat 5 slides. However, when the sliding amount is increased, the free length of the coil spring 13 is also increased. When the seat 5 is slid, the coil spring 13 is exposed to the outside and the appearance is poor.
(2) As the free length of the coil spring 13 becomes longer, the coil diameter of the coil spring 13 becomes larger and the layout is poor.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a seat slide device that has good appearance and good layout.

The invention according to claim 1, which solves the above problem, includes a lower rail provided on the floor side, an upper rail that is movably engaged with the lower rail, and a seat is provided, and a lock mechanism that prohibits movement of the upper rail with respect to the lower rail. In a seat slide device that slides the seat with respect to the floor, a contact portion provided on the lower rail side, and a position that is rotatably provided on the seat side and at which the seat can be seated The rotary end side of the lever can come into contact with the contact portion, and when the seat moves in one direction from the seatable position , the lever that moves away from the contact portion , and the lever The one that moves in one of the movement directions of the upper rail via the lever when the is in contact with the contact portion And a biasing means for biasing in the direction.

  Usually, the movement of the upper rail with respect to the lower rail is prohibited by the lock mechanism. When the occupant is seated and the lock mechanism is operated to release the lock, the upper rail can move with respect to the lower rail. When the seat is moved to a desired position and the operation force of the lock mechanism is released, the upper rail is again prohibited from moving relative to the lower rail.

  When the seat is in a seatable position and the occupant is not seated and the lock mechanism is operated to release the lock, the upper rail (seat) moves in the direction of the upper rail by the biasing force of the biasing means. Move in either direction. And if a lever leaves | separates from a contact part, an upper rail will move to the termination | terminus position of either one of the moving directions of an upper rail by inertia or manually.

  The direction in which the lower rail of the seat slide device of the present invention is provided may be the front-rear direction of the vehicle or the width direction of the vehicle.

According to the first aspect of the present invention, when the abutting portion provided on the lower rail side and the seat side are rotatably provided, and at least the seat is in a seatable position, the rotating end side is the A lever that can come into contact with the contact portion and moves in one direction from a position at which the seat can be seated , and a lever that separates the rotation end portion from the contact portion , and the lever contacts the contact portion And an urging means for urging the upper rail in the direction of movement in one of the movement directions of the upper rail via the lever, so that the occupant is in a position where the seat can be seated. When the lock mechanism is operated and the lock is released while the seat is not seated, the upper rail (seat) moves in one of the moving directions of the upper rail by the biasing force of the biasing means. The upper rail (seat) moves in one of the moving directions of the upper rail by the urging force of the urging means. Therefore, only a small urging means is required, and even if the sheet slides, the urging means is not exposed to the outside, and the appearance is good.

  Moreover, since a small biasing means is sufficient, the layout of the biasing means is good.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  First, the overall configuration of the seat provided with the seat slide device of this embodiment will be described with reference to FIG. Two lower rails 101 and 101 'are arranged side by side on the floor side. Upper rails 103 and 103 ′ on which the seat 100 is provided are movably engaged with the lower rails 101 and 101 ′. A lock mechanism for prohibiting the movement of the upper rails 103 and 103 'relative to the lower rails 101 and 101' is provided.

  Next, the lock mechanism will be described with reference to FIG. One locking mechanism is provided on the upper rail 103 and the lower rail 101 side, and one is provided on the upper rail 103 ′ and the lower rail 101 ′ side. However, since the configuration is the same, description will be given on the upper rail 103 and the lower rail 101 side. The lower rail 101 is provided on the floor side via a front bracket 95 and a rear bracket 97. A plurality of lock holes 105 are formed on the side surface of the lower rail 101 along the longitudinal direction thereof. On the other hand, a crank-shaped rod 102 is rotatably provided on the upper rail 103 along the longitudinal direction of the upper rail 103. A lock lever 107 is attached to the rod 102, and the rotation end portion side of the lock lever 107 can be engaged with and disengaged from the lock hole 105 of the lower rail 101. Further, the lock lever 107 is urged in a direction (lock direction) in which the lock lever 107 is engaged with the lock hole 105 by a torsion spring 109 having one end engaged with the upper rail 103 and the other end engaged with the lock lever 107.

  An open bracket 111 is rotatably provided on the upper rail 103 using pins 110. By rotating the open bracket 111, the crank portion 102a of the rod 102 is pushed, and the lock lever 107 can be driven in a direction (unlock direction) to be released from the lock hole 105. Further, the open bracket 111 is attached in a direction away from the crank portion 102 a of the rod 102 by a spring 113 that is wound around the pin 110, one end is engaged with the upper rail 103, and the other end is engaged with the open bracket 111. It is energized. One end of the loop handle 115 is attached to the open bracket 111, and the other end of the loop handle 115 is attached to the open bracket of the lock mechanism on the upper rail 103 ′ and lower rail 101 ′ side.

  Next, the operation of the above configuration will be described. When the loop handle 115 is not operated, the open bracket 111 is located away from the crank portion 102a of the rod 102 by the biasing force of the spring 113, and the lock lever 107 is moved to the lower rail by the biasing force of the torsion spring 109. The upper rail 103 is in a locked state in which the upper rail 103 is prohibited from moving with respect to the lower rail 101.

  Here, when the loop handle 115 is pulled up in the direction of arrow I against the urging force of the spring 113, the open bracket 111 pushes the crank portion 102 a of the rod 102 and the lock lever 107 against the urging force of the torsion spring 109. Is disengaged from the lock hole 105 of the lower rail 101, and the unlocked state in which the upper rail 103 can move relative to the lower rail 101 is achieved. Here, when the upper rail 103 is moved with respect to the lower rail 101 and a desired position is obtained, the operating force to the loop handle 115 is released. Then, the open bracket 111 returns to a position away from the crank portion 102 a of the rod 102 due to the biasing force of the spring 113, and the lock lever 107 engages with the lock hole 105 of the lower rail 101 again due to the biasing force of the torsion spring 109. Then, the movement of the upper rail 103 with respect to the lower rail 101 returns to the prohibited locked state.

  Next, the walk-in mechanism of this embodiment will be described with reference to FIGS. The lower rail 101 is provided with a plate (contact portion) 201. A bracket 203 is provided on the bottom surface of the seat 100, and a lever 207 is rotatably attached to the bracket 203 using a pin 205. A pin 209 that can contact the side surface of the plate 201 provided on the lower rail 101 is provided on one rotating end side of the lever 207. Furthermore, in this embodiment, the plate 201 and the lever 207 are provided so that the pin 209 can come into contact with the plate 201 when the seat 100 is in a seatable position.

  One end of a coil spring (biasing means) 211 is locked to the other rotating end of the lever 207. The other end of the coil spring 211 is locked to the bracket 203, and when the pin 209 of the lever 207 comes into contact with the plate 201, the coil spring 211 is urged through the lever 207 in the direction of moving forward. Yes.

  Next, the operation of the above configuration will be described.

  Normally, the movement of the upper rails 103 and 103 ′ relative to the lower rails 101 and 101 ′ is prohibited by the lock mechanism.

  When the occupant is seated and the lock mechanism is operated to release the lock, the upper rails 103 and 103 'can move relative to the lower rails 101 and 101'. When the seat 100 is moved to a desired position and the operation force of the lock mechanism is released, the upper rails 103 and 103 ′ are again prohibited from moving relative to the lower rails 101 and 101 ′.

  When the seat 100 is in a seatable position and the lock mechanism is operated and unlocked in a state where no occupant is seated, the seat 100 moves forward by the urging force of the coil spring 211. When the lever 207 is separated from the plate 201, the sheet 100 is moved to the foremost slide position by inertia or manually.

  According to such a configuration, only a small coil spring 211 is required, and even if the seat 100 slides, the coil spring 211 is not exposed to the outside, and the appearance is good. In addition, since only a small coil spring 211 is required, the layout of the coil spring 211 is good.

  The present invention is not limited to the above embodiment. For example, as shown in FIG. 4, a torsion spring in which an intermediate portion winds a pin 205 instead of a coil spring 211, one end is locked to a bracket 203, and the other end is locked to a lever 207. 213 may be sufficient.

  In the above-described embodiment, the pin 209 that can contact the side surface of the plate 201 is provided on the lever 207. However, as shown in FIG. Also good.

  Furthermore, in the above embodiment, the coil spring 211 is biased in the direction in which the seat 100 moves forward via the lever 207, but conversely, the coil spring 211 is configured to be biased in the direction in which the seat 100 moves backward. May be. In this case, when the seat 100 is in a seatable position and the lock mechanism is operated and unlocked in a state where the occupant is not seated, the seat 100 is moved backward by the urging force of the coil spring 211. Moving. When the lever 207 is separated from the plate 201, the sheet 100 is moved to the last slide position by inertia or manually.

  Moreover, a structure as shown in FIG. 6 may be used. In the figure, 401 is a lower rail provided on the floor side, and 403 is an upper rail that is movably engaged with the lower rail 401 and on which a seat is provided. Note that the lock mechanism is omitted. A guide plate 407 in which a guide hole 405 extending in the seat sliding direction is formed is provided at the front portion of the lower rail 401. A slider 409 is movably engaged with the guide hole 405. The slider 409 is engaged with the other end of a coil spring (biasing means) 413 whose one end is engaged with the bracket 411 at the rear of the upper rail 403. The coil spring 413 is biased in the direction in which the seat moves forward via the slider 409 when the slider 409 abuts on the rear end 405a of the guide hole 405. The guide plate 407 is set so that the slider 409 comes into contact with the rear end 405a of the guide hole 405 at least when the seat is in a seatable position.

  When the seat is in a seatable position and the lock mechanism is operated and unlocked in a state where no occupant is seated, the seat moves forward by the urging force of the coil spring 413. When the slider 409 is separated from the rear end 405a of the guide hole 405, the seat moves to the foremost slide position by inertia or manually.

  Even with such a configuration, only a small coil spring 413 is required, and even if the seat slides, the coil spring 413 is not exposed to the outside, and the appearance is good. In addition, since a small coil spring 413 is sufficient, the layout of the coil spring 413 is good.

It is a block diagram explaining the walk-in mechanism of a form example. It is a disassembled perspective view explaining the whole structure of the sheet | seat in which the seat slide apparatus of the form example was provided. It is a figure explaining the lock mechanism of a form example. It is a figure explaining the other example of a form. It is a figure explaining the other example of a form. It is a figure explaining the other example of a form. It is a figure explaining the conventional seat slide apparatus.

Explanation of symbols

100 seat 101 lower rail 201 plate (contact part)
207 Lever 211 Coil spring (biasing means)

Claims (1)

A lower rail provided on the floor side, an upper rail that is movably engaged with the lower rail, and a seat is provided; and a lock mechanism that prohibits the upper rail from moving relative to the lower rail; and In the seat slide device for sliding,
A contact portion provided on the lower rail side;
Provided rotatably on the seat side, and at least when the seat is in a seatable position, the rotating end side of the seat can contact the contact portion, and the seat moves in one direction from the seatable position. Then, the lever that the rotating end side is separated from the contact portion ,
An urging means for urging the lever in a direction of moving in one of the moving directions of the upper rail via the lever when the lever abuts on the abutting portion;
A seat slide device comprising:

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