JPH0545541Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a vehicle seat track in which the position of the seat can be adjusted in the longitudinal direction.

[Prior art]

As a type of vehicle seat track, there is a lock that releasably locks both rails between a lower rail fixed to the floor and an upper rail that is attached to the rail so as to be slidable in the longitudinal direction and supports the seat cushion. There is a seat track that has a mechanism that allows the seat position to be adjusted in the front and rear directions.

By the way, when a vehicle seat that adopts this type of seat track is installed in a vehicle with large doors, such as a two-door vehicle, it is difficult for a person (a small person) who uses the seat in a relatively forward position. Because the space between the seat and the door is narrow when getting on and off, it is often necessary to move the seat backwards to get out of the vehicle, and then adjust the seat back to its original forward position after getting in. Furthermore, in a seat with a walk-in mechanism, the seat is moved forward when getting off the vehicle in order to facilitate the occupant's getting on and off the rear seat, and the seat is adjusted to its original rear position after getting on the vehicle.

For this reason, it is preferable to eliminate the trouble of adjusting these seats to the original position each time after getting on the seat, and especially for seats with a walk-in mechanism, as shown in Japanese Utility Model Application Publication No. 55-127628, It is known that the seat is equipped with a so-called fixed position memory mechanism in which the seat is always locked at a predetermined return position when moving rearward.

[Problem that the invention attempts to solve]

By the way, in the seat disclosed in the above publication, the fixed position memory mechanism is integrated with the lock mechanism disposed on the seat track, and it is not easy to change the setting of the return position of the upper rail (seat). If the locking mechanism is significantly modified due to changes in the track, etc., the fixed position memory mechanism must necessarily be modified accordingly.

Therefore, the object of the present invention is to provide a seat truck equipped with a fixed position memory mechanism that allows the setting of the seat return position to be easily changed, is not affected by changes in the locking mechanism, and does not require corresponding changes. The purpose is to provide this in a simple configuration.

[Means for solving problems]

A vehicle seat track according to the present invention includes a third rail provided on either one of the two rails and having a plurality of engagement portions in the longitudinal direction, and is slidable on the third rail in the longitudinal direction. a sliding member that is assembled to the rail and has an engaged part that removably engages with the engaging part of the rail; and a sliding member that is provided on the other of the rails and is located behind or in front of the sliding member. The sliding member is characterized in that it includes a regulating member that comes into contact with the sliding member during sliding to restrict further sliding in the same direction.

[Functions and effects of the idea]

In such a configuration, the sliding member is engaged with the third rail and its sliding movement is restricted, and it is possible to slide by releasing the engagement between these two, and this sliding member is It slides until it comes into contact with the regulating member. When the sliding member is in contact with the regulating member, sliding of the upper rail in one direction is also restricted, and the rail is in a locked state in the same direction. Further, the upper rail is locked to the lower rail by the action of a locking mechanism, and movement in the front and back direction is restricted.

In this state, when the lock mechanism is operated to release the lock of the upper rail from the lower rail, the upper rail is released from the front and back movement restriction by the lock mechanism. Therefore, depending on the arrangement position of the regulating member with respect to the sliding member, the upper rail can be moved forward or backward, and thereby the seat can be positioned forward or backward. After adjusting the position, the sliding member is disengaged and slid forward or backward to come into contact with the regulating member, and in this state, the sliding member is engaged with the third rail.

When the occupant operates the lock mechanism to unlock the upper rail and move the seat forward or backward in order to facilitate disembarkation, the sliding member moves forward or backward from the regulating member depending on the amount of movement. Separate to. Therefore, when the occupant moves the seat backwards or forwards after getting on the seat, the sliding member comes into contact with the regulating member when it slides back to the adjustment position before getting off the seat, and prevents further movement of the seat.
Therefore, the seat returns to its original position accurately.

By the way, in this seat track, even if the lock mechanism is in the locked state, the sliding member for setting (changing) the return position of the seat can be slid by releasing the engagement with the third rail. By adjusting the position of the sliding member, the return position of the seat can be easily and accurately changed. Furthermore, when returning the seat to the return position, the constituent members of the lock mechanism do not engage with the sliding member, the regulating member, and the third rail during the return process.
The seat can be returned to the return position smoothly. In addition, such a sliding member, a regulating member and a third
Since the rail is constructed independently of the locking mechanism, it is not affected in any way even when the locking mechanism is changed, and the construction is simple.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a seat track according to the present invention. As shown in FIG. 3, this seat track is adopted as the left seat track 10 of the left and right seat tracks 10 and 20 of the driver's seat.

The left seat track 10 includes a lower rail 11a, an upper rail 11b, and a first lock mechanism 10.
a, a memory mechanism 10b, and an upper rail 1
1b is attached to a lower rail 11a fixed to the vehicle floor so as to be slidable in the longitudinal direction. A lower arm 31 is erected on the upper rail 11b, and an upper arm 33 is attached to the rear end of the lower arm 31 via a known reclining adjuster 32 so as to be rotatable in the front-rear direction. The right seat track 20 is composed of a lower rail 21a, an upper rail 21b, and a second lock mechanism 20a, and the upper rail 21b is attached to the lower rail 21a fixed parallel to the lower rail 11a fixed to the vehicle floor so as to be slidable in the front-rear direction. It is being On this upper rail 21b are a front bracket 34a and a hinge plate 34.
b is erected. The seat cushion S1 constituting the seat is assembled to the lower arm 31, front bracket 34a, and hinge plate 34b on each upper rail 11b and 21b, and the seat back S2 is assembled to the upper arm 33 and the hinge plate 34.
It is assembled in b.

First lock mechanism 10a and second lock mechanism 2
The first lock mechanism 10a releasably locks the upper rail 11b of the left seat track 10 to the lower rail 11a, and the second lock mechanism 20a locks the upper rail 21b of the right seat track 20 in a releasably manner. It is releasably locked to the lower rail 21a. Second
In the lock mechanism 20a, the track handle 2
2, and when the track handle 22 is rotated, the lock lever 23 is rotated and the engagement of the lever 23 with the lock plate 24 is released. As a result, the upper rail 21b is unlocked from the lower rail 21a, and the upper rail 21b becomes able to slide in the front-rear direction. At the same time, the rotational operation of the track handle 22 is transmitted to the first lock mechanism 10a via the connecting wire 25,
The lock lever 12 of the first lock mechanism 10a is rotated to release the engagement of the lever 12 with the lock plate 13. As a result, Atsupa Rail 1
1b is unlocked from the lower rail 11a, the upper rail 11b becomes slidable in the front-rear direction, and the position of the seat becomes adjustable in the front-rear direction.

The memory mechanism 10b constitutes the main part of the present invention, and includes a slide rail 14, a slide block 15, a lock lever 16, and a stopper 17. The slide rail 14 has a large number of engagement holes 14a at predetermined intervals in the longitudinal direction, and is fixed to the lower rail 11a via both front and rear brackets 18a, 18b.
It is located below 1a and protrudes outward. The slide block 15 is fitted into the slide rail 14 so as to be slidable in the longitudinal direction of the rail 14, and a lock lever 16 is rotatably attached to the slide block 15 via a coil spring 18c. ing. The lock lever 16 is engaged with one of the engagement holes 14a of the slide rail 14 by the biasing force of a coil spring 18c. The lock lever 16 is provided with an operating knob 16a at its outer end. The stopper 17 is fixed to the outside of the upper rail 11b, protrudes outward, and is located behind the slide block 15 so that it can come into contact with the block 15.

In the seat track 10, after adjusting the position of the seat in the longitudinal direction, the lock lever 16 of the memory mechanism 10b is rotated to release the engagement of the lever 16 with the slide rail 14, and the slide block 15 is slid. 1, it is brought into contact with the stopper 17. As a result, the slide block 15 is set to the return position.

In order to make it easier for the occupant sitting on the seat in this state to get out of the vehicle, the driver rotates the track handle 22 to unlock both upper rails 11b and 21b and moves the seat a desired amount rearward. In response to this, the slide block 15 moves backward and away from the slide block 15. This widens the space between the seat and the door, making it easier to get out of the vehicle and also easier to get in. Further, when the occupant moves the seat forward by rotating the track handle 22 after sitting on the seat, the stopper 17 comes into contact with the slide block 15 when the seat has moved forward by a predetermined amount, and the seat is moved forward by a predetermined amount. Control forward movement. As a result, the seat is accurately returned to its original position.

By the way, in the seat track 10, when setting (changing) the return position of the seat,
Since the slide block 15 of the memory mechanism 10b is simply slid on the slide rail 14 until it contacts the stopper 17 while the lock mechanisms 10a and 20a remain in the locked state, the return position of the seat can be changed easily and accurately. Can be done.
Further, when the seat is returned to the return position, the constituent members of the lock mechanism 10a do not engage with the constituent members of the memory mechanism 10b during the return, and the seat can be smoothly returned to the return position. Further, the memory mechanism 10b is connected to both the lock mechanisms 1 and 1 described above.
0a, 20a, so even when changing the lock mechanisms 10a, 20a, the memory mechanism 1
0b is not affected in any way and has a simple configuration.

In addition, in the case where the seat is moved forward when exiting the vehicle in order to facilitate the getting on and off operations of the occupant seated in the rear seat, the positional relationship between the front and rear of the slide block 15 and the stopper 17 may be reversed from that in the above embodiment. It is also possible to reverse the fixed side members of the slide rail 14 and the stopper 17 for the lower rail 11a and the upper rail 11b, respectively.

[Brief explanation of the drawing]

Fig. 1 is a side view of a seat track according to an embodiment of the present invention, Fig. 2 is an enlarged longitudinal sectional view taken along the arrow-line in Fig. 1, and Fig. 3 is a schematic perspective view of a seat employing the same seat track. It is a diagram. Explanation of symbols, 10, 20... Seat track,
10a, 20a...Lock mechanism, 10b...Memory mechanism, 11a, 21a...Lower rail, 11
b, 21b... Upper rail, 14... Slide rail (third rail), 15... Slide block (sliding member), 16... Lock lever (engaged part), 17... Stopper (regulating member).

Claims (1)

[Scope of utility model registration request] A locking mechanism is provided between the lower rail fixed to the floor and the upper rail, which is attached to the rail so as to be slidable in the longitudinal direction and supports the seat cushion, to releasably lock both rails, allowing the position of the seat to be moved forward or backward. In a vehicle seat track that is adjustable in the direction, the third rail is provided on either one of the two rails and has a plurality of engaging portions in the longitudinal direction, and the third rail is assembled to the rail so as to be slidable in the longitudinal direction. a sliding member having an engaged portion that removably engages with the engaging portion of the rail; and a sliding member that is provided on the other of the rails and located behind or in front of the sliding member; A seat truck for a vehicle, characterized in that the member is provided with a regulating member that comes into contact with the member during sliding to restrict further sliding in the same direction.