JPH04215533A - Seat device for vehicle - Google Patents

Abstract

PURPOSE:To improve the operation performance by releasing the slide lock by an auxiliary lever when setting to a full flat state is performed and shifting a seat to the full forward, getting over an operation range, and holding the seat at a front position by a restricting mechanism. CONSTITUTION:In the ordinary use state shown by the full line, if an auxiliary lever 13 installed on a rotary shaft 12 is stepping-together operated, with a restricting mechanism W, the first rotary lever 14 shifts to pull a wire cable 20. Then, the operating lever 36 of a slide lock mechanism Z is turned to release the lock for a slide rail 3. At the same time, the second turning lever 16 is turned in the direction of arrow (c) through a connecting spring 15, and a roller 17 is attached on the undersurface 31b of an upper rail 31. Then, a seat 1 is pushed forward against a return spring, keeping the auxiliary lever 13 in pressed down state. When the seat 1 reaches the third position, the engagement between the roller 17 and the undersurface 31b of the upper rail 31 is released, and the second turning lever 16 is projected upward (position 16'') by the connecting spring 15, and positioned at a restricted position.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device.

0002

2. Description of the Related Art Conventionally, in a so-called wagon type vehicle, seats are arranged in three rows in the longitudinal direction of the vehicle as shown in FIG. 54 so that it can be moved in the longitudinal direction of the vehicle, and the slide lock mechanism Z can lock or unlock the slide device X at a desired position. is provided with a reclining mechanism Y that tilts the seat back 52b rearward so that it becomes substantially flush with the seat cushion 52a, so as to bring it into a so-called full flat state. Further, a return spring 50 is arranged between the vehicle body floor 54 side and the center seat 52, and the return spring 50 always urges the center seat 52 toward the rear of the vehicle body.

By the way, when setting the center seat 52 in a seat device having such a configuration in a fully flat state, first, the slide lock mechanism Z is activated by the operation lever 55 located at the lower front position of the seat cushion 52a.
While in the released state, the center seat 52 is fully slid toward the front seat 51 beyond the normal slide adjustment range (in other words, the operating range of the slide lock mechanism Z). Next, operate the operating lever 56 of the reclining device Y to fully tilt the seat back 52b to the rear side and maintain the posture in this state, and the return spring 50
Due to the spring force, the tip 52c of the seat cushion 52b
is pressed against the front end of the seat cushion 53a of the rear seat 53 to prevent the seat back 52b from wobbling. By the above operations, the center seat 52 is brought into a fully flat state.

0004

However, in such a configuration, when the center seat 52 is set in a fully flat state, the center seat 52 must be placed in the front seat 51.
When the center seat 52 is fully slid to the side, as described above, the center seat 52 moves forward beyond the normal slide adjustment range and is out of the operating range of the slide lock mechanism Z, so that the center seat 52 cannot be slid by the slide lock mechanism Z. Since the locking action cannot be used, the operator must
When operating the center seat 52, it is necessary to forcefully hold the center seat 52 at the frontmost position against the spring force of the return spring 50. For this reason, it is extremely difficult for one person to fully flatten the center seat 52, and usually two people are required to operate the center seat 52, so there is room for improvement in terms of operability.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to provide a vehicle seat device that improves operability by allowing one person to easily operate the seat fully flat.

[0006]

[Means for Solving the Problems] In the present invention, as a specific means for solving the problems, the above-mentioned seat comprising a seat cushion and a seat back attached to the seat cushion so as to be reclinable by a reclining device is provided. The seat cushion is fixed to the upper rail of a slide rail consisting of a lower rail that is fixedly arranged on the vehicle floor side and an upper rail that is slidable in the axial direction with respect to the lower rail. A slide lock mechanism is arranged so that the slide rail can be locked or unlocked within a predetermined slide range by operating a lever, and a return spring placed between the seat and the vehicle body keeps the seat always in place. In a vehicle seat device that is biased toward the rear, an auxiliary lever is provided on a rotation shaft provided at a side position of the seat, and is configured such that the slide lock mechanism can be released by rotation of the auxiliary lever. When the upper rail of the slide rail is moved toward the front of the seat beyond the operating range of the slide lock mechanism against the biasing force of the return spring, the seat of the upper rail is moved in conjunction with the operation of the auxiliary lever. It is characterized by the arrangement of a regulating mechanism that regulates movement to the rear side.

[0007]

[Function] With this configuration of the present invention, for example, when setting the seat from the normal sitting state to the fully flat state, the operator first operates the auxiliary lever to bring the slide lock mechanism into the locked state. be released. In this state, when the seat (that is, the upper rail of the slide rail) is moved fully forward beyond the operating range of the slide lock mechanism against the spring force of the return spring, the auxiliary lever is operated. The regulating mechanism operates in conjunction with this, and the seat is held in this forward position.

Next, from this state, the reclining device is operated to fully recline the seat back to the rear, bringing it into a fully flat state and maintaining that posture. Thereafter, by releasing the operation of the auxiliary lever, the regulating action by the regulating mechanism is released, and the seat is attached so that the tip of the seat back is pressed against the rear seat by the spring force of the return spring. This completes the operation of setting the sheet to a fully flat state.

[0009]

Therefore, according to the vehicle seat device of the present invention, the unlocking operation of the slide lock mechanism and the seat regulating action by the regulating mechanism are performed in conjunction with the operation of the auxiliary lever, so that one person can While operating the auxiliary lever, the operator can easily set the seat back to the fully flat state by tilting the seat back backwards with his or her free hand, which eliminates the need for two people to operate it as in the past. The effect is that the operability is improved compared to the case where it is not necessary.

Furthermore, since the auxiliary lever and the regulating mechanism are arranged on the same rotational axis, the device itself can be It can be configured more compactly, and is particularly suitable when applied to a vehicle configured such that the space in the front and rear directions of the seat is restricted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the main parts of a vehicle seat device according to an embodiment of the present invention. This seat device is used as a center seat of a so-called van-type vehicle (see FIG. 5), and can be reclined via a seat cushion 1a and a reclining device (not shown) for the seat cushion 1a. It has a connected seat back 1b. In this seat 1, a base frame 2 fixed to the lower surface side of the seat cushion 1a is fastened and fixed to a slide rail 3, which will be described later.

As shown in FIGS. 1 and 2, the slide rail 3 is fitted with an upper rail 31 fixed to the lower surface of the base frame 2 so as to be slidable relative to the upper rail 31 in the axial direction. The slide device X is constructed by arranging one slide rail 3 on each side of the seat 1 in the width direction. Further, a base plate 10 is fixed to the lower rail 32 of the slide rail 3 via rail brackets 4, 4 provided at the front and rear parts thereof, respectively, and extends in the front-rear direction of the seat. The base plate 10 is removably connected to a pair of front and rear shafts 7 and 8 disposed on the vehicle floor (not shown) through front hooks 5 and rear hooks 6. is removably fixed to the vehicle floor side in a state where it can slide in the front and rear directions. In this case, the seat 1 is always urged rearward by a return spring 9 disposed between the seat 1 and the vehicle body side member.

Furthermore, the sliding range of the slide rail 3 is a first range in which the upper rail 31 and the lower rail 32 are overlapped over almost the entire length thereof, as shown by the solid line in FIG.
position (the seat position is indicated by reference numeral 1), and a second position (the seat position is indicated by reference numeral 1') in which the upper rail 31 is moved forward by a predetermined distance from the first position as shown by the chain line (represented by reference numeral 31'). from the position shown) to the third position where the upper rail 31 extends further forward from the second position (the seat position is the position shown by number 1") as shown by the chain line (number 31"). In particular, in this embodiment, the range between the first position and the second position is the normal seat position adjustment range, and the range from the second position to the third position is where the seat 1 is set in a fully flat state as described below. It is intended to be used only in cases.

In this embodiment, the slide lock mechanism Z, which will be described later, can be locked only within the range of the first position and the second position. That is,
As shown in FIG. 4, the slide lock mechanism Z has a fulcrum shaft 3.
5 rotatably supported by a spring (
A knob 37 is attached to one end 36a of the operating lever 36, which is always urged to rotate in the direction of arrow A by a lever (not shown), and the other end 36b.
A suitable number of lock holes 33 into which the lock pins 38 can be inserted are formed in the side surface of the upper rail 31 of the slide rail 3 at predetermined intervals in the axial direction. The slide device X can be locked at any slide position by rotating the operating lever 36 in the direction of the arrow E-ro and selectively fitting the lock pin 38 into each of the lock holes 33, 33, . It has become.

Therefore, since the slide lock mechanism Z does not function between the second and third positions, the seat 1 is set from its normal use state to the fully flat state as already described with reference to FIG. In this case, the sheet 1
It is necessary for the operator to temporarily hold it in the third position against the biasing force of the return spring 9 (that is, until the backward tilting operation of the seat back 1b is completed), Therefore, it is extremely difficult to perform this full-flat operation by one person. Therefore, in this embodiment, by applying the present invention as described later, the unlocking operation of the slide lock mechanism Z and the temporary holding of the seat 1 in the third position during the full flat operation can be performed in a single operation. We aim to improve operability by making it possible to perform operations in conjunction with each other.

That is, as shown in FIGS. 1 to 3, sub-plates 11 are arranged parallel to each other at a predetermined distance inside the base plate 10, and a rotating shaft 12 is arranged astride between the base plate 10 and the sub-plate 11. An auxiliary lever 13 is attached to one end of the base plate 10, the tip of which is a foot 13a. In addition, this rotation axis 1
A first rotating lever 14, which will be described later, is fixed in a non-rotating state to the other end of the second sub-plate 11 side.
A rotary lever 16 is rotatably attached to the first
The rotating lever 14 is configured to be rotated integrally with the auxiliary lever 13 by rotating the auxiliary lever 13.

The first rotating lever 14 has a distal end 1
One end 20a of the wire cable 20 is fixed to the wire cable 4a, and the other end of a connecting spring 15, which has one end locked to a second rotating lever 16, which will be described later, is locked to the middle portion 14b. And this wire cable 20
As shown in FIGS. 3 and 4, while the other end 20b is fixed to the upper rail 31 side, the tube cap 22 provided at one end of the wire tube 21 is fixed to the sub-plate 11, and the other end is fixed to the sub-plate 11. The provided tube caps 23 are fixed to the operating levers 36, respectively.

On the other hand, as shown in FIGS. 2 and 3, the second rotating lever 16 is rotatably supported by the rotating shaft 12, and has a roller 17 at one end 16a.
At the same time, the end surface closer to the front of the seat than the roller 17 mounting position is connected to the rear end 31a of the upper rail 31 (
In the state shown by the chain line in FIG. 2, the locking portion 16c is engageable with the reference numeral 31a'). In addition, this second rotation lever 16
One end of the connection spring 15 is latched to the middle portion 16b of the second rotary lever 16 in such a manner as to bias the second rotary lever 16 to rotate in the direction of arrow C.

Further, the second rotating lever 16 is always urged to rotate in the direction of arrow D by a spring 19 disposed between it and the sub-plate 11. Note that the spring forces of this spring 19 and the connection spring 15 are set relative to each other so that the spring force of the spring 19 is smaller than that of the connection spring 15. Note that the tip 16d of the second rotating lever 16 is connected to the elongated hole 18 formed in the sub-plate 11.
By engaging the tip end 16d with both ends 18a and 18b of the elongated hole 18, the maximum rotation range of the second rotation lever 16 is restricted. ing.

With this configuration, when the auxiliary lever 13 is not depressed as shown in the solid line in FIG. 2 (that is, when the connecting spring 15 has almost no spring force), The second pivot lever 16 is pivoted in the direction of arrow D by the spring force of the spring 19 (hereinafter referred to as the second pivot lever 16 in this case).
The rotation position of the rotation lever 16 is referred to as the restriction release position), and the auxiliary lever 13 is pulled upward by the spring force of the spring 19 via the connection spring 15 (hereinafter, the auxiliary lever 13 in this case The rotating position is called the non-operating position). In addition, in the restriction release position of the second rotation lever 16, the roller 17 is spaced apart from the lower surface 31b of the upper rail 31. Further, in this case, the wire cable 20 is in a non-tensioned state, and the operating lever 36 of the slide lock mechanism Z is held at the lock position as shown by the solid line in FIG.

On the other hand, when the auxiliary lever 13 is depressed and rotated to the operating position shown by the chain line in FIG. It is forcibly rotated in the direction of arrow C against the force, as shown by the chain line in the same figure (numeral 16').
The rollers 17 are attached to the lower surface 31 of the upper rail 31 so that
After passing through a transitional position in which it abuts on the auxiliary lever 13, the locking portion 16c is positioned at a restriction position in which it protrudes upward from the lower surface 31b as shown by the chain line (16''). Interlockingly, a tensile force is applied to the wire cable 20, and the operating lever 36 of the slide lock mechanism Z is rotated in the direction of arrow B as shown by the chain line (36') in FIG. 4 and set to the lock release position. be done.

Next, the operating state of the seat device configured as described above is set by setting the seat 1 (center seat 52 in the figure) from the normal use state to the fully flat state as shown by the solid line in FIG. This will be explained by taking a case as an example.

In normal use, the seat 1 is assumed to be in the first position shown by the solid line in FIG. In this state, the auxiliary lever 13 is in the non-operating position, and therefore the slide lock mechanism Z is in a state in which the slide rail 3 is locked at a predetermined slide position. In order to set the seat 1 in a fully flat state from this state, the user first operates the auxiliary lever 13 by stepping on it with his or her foot to set it to the operating position. Then, along with the displacement of the first rotating lever 14 that rotates integrally with the auxiliary lever 13,
First, the wire cable 20 is pulled, and the operating lever 36 of the slide lock mechanism Z is rotated in the direction of arrow B to release the locked state of the slide rail 3. Therefore, in this state, the seat 1 can be freely moved in the longitudinal direction.

At the same time, the connection spring 15
The second rotating lever 16 is urged to rotate in the direction of arrow C against the spring force of the spring 19, and the roller 17 is set at a transient position in contact with the lower surface 31b of the upper rail 31. The roller 17 is in a state where it can roll on the lower surface 31b.

Next, with the auxiliary lever 13 depressed and operated, the seat 1 is pushed forward by hand against the spring force of the return spring 9 (see FIG. 1). In this case, while the sheet 1 is moving from its first position to its second position to its third position, the roller 17
rolls on the lower surface 31b of the upper rail 31, but when the sheet 1 reaches the third position, the engagement between the roller 17 and the lower surface 31b of the upper rail 31 is disengaged, and the second rotating lever 16 is rotated as shown in FIG. As indicated by reference numeral 16'', the spring force of the connecting spring 15 causes it to protrude upward and position it at the restriction position.Therefore, after the second rotating lever 16 is positioned at the restriction position, no pressing force is applied to the seat 1. By releasing the seat 1, the seat 1 moves slightly rearward, and at that point, the locking part 16c of the second rotating lever 16 engages with the rear end 31a' of the upper rail 31, and the seat 1 moves further to the rear. The backward movement of the sheet 1 is restricted (that is, the restriction mechanism W temporarily holds the seat 1).

Next, while continuing to depress the auxiliary lever 13, the operator operates the reclining device Y with his two free hands to lower the seat back 1b of the seat 1.
Tilt it to the final tilted position and hold it. In this state, the tip of the seat back 1b of the seat 1 faces the seat cushion of the seat located on the rear side thereof (that is, the rear seat 53 in FIG. 5). Therefore, when the operating force on the auxiliary lever 13 is released in this state, the second pivot lever 16 returns to the regulation release position and the regulation action on the slide rail 3 is released, so that the seat 1 is While the bag 1b is in the reclined state, it is pulled back to the rear by the spring force of the return spring 9, and the bag 1b is held in position with its tip pressed against the seat at the rear position. Now sheet 1
The setting operation from the normal use state to the fully flat state is completed.

As described above, in the vehicle seat device of this embodiment, the releasing operation of the slide lock mechanism Z and the regulating operation of the slide rail 3 are performed simultaneously in conjunction with the operation of the auxiliary lever 13, so that one person can It is possible to easily operate the seat 1 fully flat.
For example, the operability is dramatically improved compared to the conventional case where two people have to do this.

Furthermore, as in this embodiment, one rotation shaft 1
When the auxiliary lever 13 and the first rotary lever 14 and the second rotary lever 16 constituting the regulating mechanism W are arranged on the auxiliary lever 13 and the regulating mechanism W, for example, these respective members are arranged apart from each other in the front and rear direction of the seat. This makes it possible to form the entire device including these members more compactly than in the case of the present invention, which is particularly suitable for applications where space in the front and back directions of the seat is restricted.

Furthermore, in this embodiment, since the auxiliary lever 13 and the second rotating lever 16 are elastically connected not by a link bar but by a connecting spring 15, the auxiliary lever 13 is If a heavy load is applied, this will be absorbed by the connection spring 15, and damage to the second rotating lever 16 side will be reliably prevented. The reliability of the device can be further improved.

On the other hand, when the seat 1 is in a fully flat state, the tip of the seatback 1b is pressed and supported by the seat in the rear position, so that the seatback 1b does not wobble or shake even when the vehicle is running. This eliminates the generation of abnormal noise associated with this, and the reliability and commercial value of the device are improved accordingly.

Furthermore, in the transitional position of the second rotating lever 16, it is brought into contact with the lower surface 31b of the upper rail 31 via the roller 17, so that, for example, the second rotating lever 16 cannot be brought into direct contact with the lower surface 31b. Compared to the case where the two come into metal contact, the slide rail 3 slides more smoothly and its operability is further improved. Incidentally, as a method of obtaining the same effect, as in this embodiment, the second rotating lever 16 is moved through the roller 17.
In addition to the method of contacting the lower surface 31b of the upper rail 31, for example, instead of the roller 17, a synthetic resin plate body is attached to the second rotating lever 16, and the second rotating lever 16 and the lower surface 31b of the upper rail 31 are connected to each other. A method of bringing the two into a non-metal contact state is also conceivable.

[Brief explanation of the drawing]

FIG. 1 is a side view of essential parts of a vehicle seat device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of portion II in FIG. 1;

FIG. 3 is a perspective view of the portion shown in FIG. 2;

FIG. 4 is a view taken along the line IV-IV in FIG. 1;

FIG. 5 is an explanatory diagram of a seat arrangement structure of a van-type vehicle.

[Explanation of symbols]

1 is the seat, 2 is the base frame, 3 is the slide rail, 4 is the rail bracket, 9 is the return spring, 1
2 is a rotating shaft, 13 is an auxiliary lever, 14 is a first rotating lever, 15 is a connecting spring, 16 is a second rotating lever, 17
is a roller, 19 is a spring, 20 is a wire cable, 31 is an upper rail, 32 is a lower rail, 36 is an operating lever, 38 is a lock pin, X is a slide device, Z is a slide lock mechanism, and W is a regulation mechanism.

Claims (1)

[Claims] Claim 1: The seat cushion of a seat consisting of a seat cushion and a seat back attached to the seat cushion so that it can be reclined by a reclining device is attached to a lower rail that is fixedly arranged on the floor side of the vehicle body and the lower rail. The slide rail is fixed to the upper rail of the slide rail, which is made up of an upper rail that is slidable in the axial direction, and the slide rail has a control lever that allows the slide rail to be locked or unlocked within a predetermined slide range. A vehicle seat device is provided with a slide lock mechanism configured to be able to operate the seat, and is always biased toward the rear of the seat by a return spring disposed between the seat and the vehicle body. An auxiliary lever is provided on a rotation shaft provided at a side position of the lever, and the upper rail of the slide rail resists the biasing force of the return spring. A regulating mechanism is arranged to restrict the movement of the upper rail toward the rear of the seat in conjunction with the operation of the auxiliary lever when the slide lock mechanism is moved toward the front of the seat beyond the operating range of the slide lock mechanism. Vehicle seat device.