JPH10157497A - Slide device for automobile rear seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an occupant from seating on a rear seat which entered a cargo space enlargement area by providing a stopper engaging with a fixed rail in the area and prevent only advance of the rear seat, at a moving rail part of one of slide rails. SOLUTION: An outer slide rail 3 is constructed so that advance of a rear seat 1 can be prevented at each position of a primary groove part 14 in a carge space enlargement area B in order to enable an occupant to acknowledge the existence of the cargo space enlargement area B. Namely, since a fore-end lower part of a first cam 16 is in a pressed state to a bottom surface part of a lower rail 9 by being energined by a compression spring 20, the lower part thereof drops into the first primary groove 14 and engaged therewith by moving forward the rear seat 1 toward the area B. In the engagement of the frist cam 16 with the primary groove 14, only the advance is prevented but the rearward movement is made possible so that the rear seat 1 is unstable, and thereby an occupant can not set thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art On a floor in front of a luggage compartment of an automobile, a sliding device for allowing a rear seat to freely move forward and backward through a pair of left and right slide rails, for example, as disclosed in Japanese Utility Model Laid-Open No. 5-298.
A technique as disclosed in Japanese Patent Publication No. 38 is known.

The slide rail is formed by combining a fixed rail fixed to a floor and a movable rail fixed to a rear seat. The distance that the rear seat can move forward and backward is determined by the length of the fixed rail.

In this type of slide device, a fixed rail of the slide rail is provided so as to extend forward from a normal seating area, and the rear seat can be moved along the fixed rail to a front luggage compartment expanding area. It has become.

[0005] That is, by sufficiently moving the rear seat forward without the occupant sitting on the rear seat, the luggage compartment can be enlarged behind the rear seat.

[0006] When the rear seat is in the luggage compartment expansion area, the seat belt provided on the vehicle body does not reach there, so that the occupant cannot be seated at that position.

That is, when the rear seat is advanced, it is necessary to notify the occupant that the rear seat has entered the luggage compartment expansion area from the seating area so that the occupant does not inadvertently sit on the rear seat in the luggage compartment enlargement area. is there.

Therefore, conventionally, a projection is formed on a fixed rail or a floor in the luggage compartment expansion area, and a sensing lever that interferes with the projection is provided on the movable rail. Once the vehicle is stopped, the occupants are notified of the starting point of the luggage compartment expansion area.

When the sensing lever is rotated, the interference state with the projection is released, and the rear seat can enter the luggage compartment enlarged area. The rear seat that has entered the luggage compartment expansion area is locked from moving forward and backward by a slide lock mechanism used in a normal seating area.

[0010]

However, in such a conventional technique, the forward / backward movement of the rear seat which has entered the luggage compartment enlargement area is directly utilized by the slide lock mechanism in the seating area. Because the structure is locked, in the process of moving the rear seat forward, although it is configured to notify the start point of the luggage compartment expansion area, since the front and rear movement of the rear seat is locked, the rear seat is in a stable state, It is possible for the occupant to sit on the rear seat after entering the luggage compartment expansion area, which is not preferable, and improvement is required.

Further, when the rear seat in the luggage compartment expansion area is moved backward to the original seating area, the slide lock mechanism must be operated again to release the locked state, which is troublesome.

The present invention has been made by paying attention to such a conventional technique. An occupant is not inadvertently seated on a rear seat that has entered the luggage compartment expansion area, and the rear seat is restored to its original seating area. It is intended to provide a slide device for a rear seat of an automobile, which can be easily moved backward.

[0013]

According to the first aspect of the present invention,
A pair of left and right fixed rails fixed to the floor and a pair of left and right movable rails fixed to the rear seat are combined to form a pair of left and right slide rails, and the rear seat is seated in front of the cargo room via both slide rails. In the sliding device for an automobile rear seat, which can move forward and backward from the area to the luggage compartment expanding area, the movable rail of the one slide rail is engaged with a fixed rail in the luggage compartment expanding area to prevent only the forward movement of the rear seat. A stopper is provided, and an operation lever for releasing the engagement state of the first stopper is provided.

According to the first aspect of the present invention, since the first stopper of the movable rail is engaged with the fixed rail in the luggage compartment enlarged area to prevent only the forward movement of the rear seat, the rear seat is a luggage compartment. It is possible to move backward in the enlarged area.

That is, in the luggage compartment expansion area, the forward / backward movement of the rear seat is not locked, and the vehicle is in an unstable state where it can move backward, so that the occupant does not inadvertently sit on the rear seat in the luggage compartment enlargement area.

Further, since the rear seat in the luggage compartment expansion area can be moved backward, when the rear seat is returned to the original seating area, the rear seat can be moved backward and returned, and the operation is very easy.

Further, since the engagement state of the first stopper can be released by the operation lever, a plurality of positions for engaging with the first stopper can be set in the fixed rail,
The engagement position can be arbitrarily selected by operating the operation lever.

According to a second aspect of the present invention, the first stopper comprises:
A first cam rotatable about a rotation shaft provided on the movable rail. The first cam engages a lower portion of a front end with a first groove formed in a bottom portion of the fixed rail to advance the rear seat. It is designed to block.

According to the second aspect of the present invention, since the lower portion of the front end of the first cam provided on the movable rail engages with the first groove of the fixed rail, the movable rail is prevented from moving forward, but can move backward. It is. If the first cam is rotated to remove the lower part of the front end from the first groove, it is possible to further advance.

According to a third aspect of the present invention, the movable rail of the other slide rail is provided with a second stopper which engages with the fixed rail in the luggage compartment enlarged area when the seat back of the rear seat is moved forward to prevent only rearward movement of the rear seat. Along with
A release mechanism is provided for releasing the engagement state of the second stopper with the occurrence of the seat back.

According to the third aspect of the present invention, the second stopper engages with the fixed rail in the luggage compartment enlarged area to prevent the rear seat from moving backward.
In cooperation with the stopper, it is possible to lock the longitudinal movement of the rear seat in the luggage compartment enlarged area.

Therefore, the rear seat in the luggage compartment expansion area is stabilized.

Even if the rear seat is locked in the luggage compartment enlarged area, the seat back is always moved forward when the second stopper engages with the fixed rail.
The crew will not be inadvertently seated.

Further, since the second stopper prevents only the backward movement, if the other first stoppers are released, the rear seat can be advanced with the seat back being tilted forward.

In addition, since the engagement state of the second stopper is released by causing the seat back, the operation of returning the rear seat to the original seating area is easy.

According to a fourth aspect of the present invention, the second stopper is
A second cam rotatable about a rotation shaft provided on the movable rail. The second cam engages a lower rear end of the second cam into a second groove formed in the bottom surface of the fixed rail, so that the rear seat moves backward. Is to be blocked.

According to the fourth aspect of the present invention, the lower portion of the rear end of the second cam provided on the movable rail is engaged with the second groove of the fixed rail. It is possible. By rotating the second cam to remove the lower portion of the front end from the second groove, it can be further moved to the rear side.

According to a fifth aspect of the present invention, a slide lock provided on the movable rail is engaged with a lock groove formed on the bottom surface of the fixed rail to lock the front / rear position in the seating area of the rear seat. In addition, the first groove portion and the second groove portion are formed on different longitudinal movement trajectories from the lock groove portion.

According to the fifth aspect of the present invention, the first groove and the second groove in the luggage compartment enlargement area are formed on a forward and backward movement locus different from the lock groove in the seating area. The first stopper and the second stopper do not engage with the lock groove for slide lock. Therefore, there is no possibility that the first stopper and the second stopper interfere with the lock groove in the seating area.

According to a sixth aspect of the present invention, the fixed rail is buried in the floor.

According to the sixth aspect of the present invention, since the fixed rail is buried in the floor, the floor can be flattened, and the appearance and the getting on / off property are improved.

[0032]

According to the first aspect of the present invention, the first stopper of the movable rail engages with the fixed rail in the luggage compartment enlarged area to prevent only the forward movement of the rear seat. It is possible to move backward in the luggage compartment expansion area. That is, in the luggage compartment expansion area, the forward and backward movements of the rear seat are not locked, and the vehicle is in an unstable state in which it can move backward, so that the occupant does not accidentally sit on the rear seat in the luggage compartment enlargement area. In addition, since the rear seat in the luggage compartment expansion area can move backward, when the rear seat is returned to the original seating area, it can be moved backward and returned,
Operation is very easy. Further, since the engagement state of the first stopper can be released by the operation lever, a plurality of positions for engaging with the first stopper can be set in the fixed rail, and the engagement position can be arbitrarily set by operating the operation lever. Can be selected.

According to the second aspect of the present invention, since the lower portion of the front end of the first cam provided on the movable rail engages with the first groove of the fixed rail, the movable rail is prevented from moving forward, but can move backward. It is. If the first cam is rotated to remove the lower part of the front end from the first groove, it is possible to further advance.

According to the third aspect of the present invention, the second stopper engages with the fixed rail in the luggage compartment enlarged area to prevent the rear seat from moving backward, so that the other first stop prevents the rear seat from moving forward.
In cooperation with the stopper, it is possible to lock the longitudinal movement of the rear seat in the luggage compartment enlarged area. Therefore, the rear seat in the luggage compartment expansion area is stabilized. Even if the rear seat is locked in the luggage compartment expansion area, when the second stopper engages with the fixed rail, the seat back is always moved forward, so that the occupant does not inadvertently sit. Further, since the second stopper prevents only the backward movement, if the other first stoppers are released, the rear seat can be moved forward with the seat back being tilted forward. Further, since the engagement state of the second stopper is released by causing the seat back, the operation of returning the rear seat to the original seating area is easy.

According to the fourth aspect of the present invention, the lower end of the second cam provided on the movable rail is engaged with the second groove of the fixed rail, so that the backward movement of the movable rail is prevented, but the forward movement of the movable rail is prevented. It is possible. By rotating the second cam to remove the lower portion of the front end from the second groove, it can be further moved to the rear side.

According to the fifth aspect of the present invention, the first groove portion and the second groove portion in the luggage compartment expansion area are formed on the forward and backward movement locus different from the lock groove portion in the seating area. The first stopper and the second stopper do not engage with the lock groove for slide lock. Therefore, there is no possibility that the first stopper and the second stopper interfere with the lock groove in the seating area.

According to the sixth aspect of the present invention, since the fixed rail is buried in the floor, the floor can be flattened, and the appearance and getting on and off can be improved.

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention is shown in FIGS.
A description will be given based on FIG. In the figure, Y is the front-back direction,
For example, in FIG. 1, the left side of the figure is the front, and the right side is the back. X is the left-right direction.

Reference numeral 1 denotes a right rear seat of the vehicle, and a pair of left and right inner slide rails 2 and outer slide rails 3.
You can go forward and backward through. The rear seat 1 includes a seat cushion 4 and a seat back 5, and the seat back 5 can be moved forward through a reclining device 6. The rear seat 1 is arranged in front of the luggage compartment R, and can move forward and backward from the seating area A to the luggage compartment enlargement area B. That is, normally, the rear seat 1 is slid only within the seating area A, and when the expanded luggage compartment R 'is formed, the rear seat 1 is advanced to the luggage compartment enlarging area B.

The two slide rails 2 and 3 are the rear seat 1
The upper rail 7 as a pair of left and right “movable rails” fixed to the lower surface of the vehicle and the lower rail 9 as a pair of left and right “fixed rails” fixed to the floor 8 are slidably combined.

The lower rail 9 has a cross-sectional shape having an opening 10 on the upper surface, and is entirely buried in the floor 8, and the upper surface of the lower rail 9 and the surface of the floor 8 are flush with each other. Not only is the surface flattened and the appearance is improved, but also there is no risk that the foot will be caught on the lower rail 9 when getting on and off.

The upper rail 7 can be moved forward and backward in the opening 10 of the lower rail 9 by rollers 11, and the rear seat 1 is fixed on the upper part thereof.

Next, the structures of the inner slide rail 2 and the outer slide rail 3 will be described in order.

The structure of the outer slide rail 3 (refer to FIGS. 2 and 3): The bottom surface of the lower rail 9 of the outer slide rail 3
The lock grooves 12 are formed at predetermined intervals in the longitudinal direction.

A slide lock 13 having a known structure (see FIG. 7) is engaged with the lock groove 12 to lock the rear seat 1 in the forward and backward movements.

In the luggage compartment expansion area B, three pairs of first grooves 14 are formed.

The first groove portion 14 is formed at the width end of the bottom portion of the lower rail 9 and has a different locus of forward and backward movement from the lock groove portion 12.

The roller 11 provided on the above-mentioned upper rail 7 also moves along a forward and backward movement locus different from the lock groove 12 and the first groove 14.

At the front end of the upper rail 7, there is provided a first cam 16 as a "first stopper" rotatable around a shaft 15 as a "rotating shaft" along the left-right direction.

The first cam 16 has the same width as the first groove 14, and the lower front end thereof can be engaged into the first groove 14.

The rear ends of the first cams 16 are connected to each other by pins 18 penetrating in the left-right direction via cutouts 17 formed in the lower edge of the upper rail 7. The pin 18 also penetrates the lower end of an operating body 19 that moves up and down across the upper rail 7.

A compression spring 20 mounted on the upper end of the upper rail 7 is provided inside the operating body 19 to urge the operating body 19 upward with respect to the upper rail 7.

The pin 1 is moved by the operating body 19 urged upward.
8 is also urged upward, so that the lower front end of the first cam 16 is urged downward.

The operating body 19 is supported by a structure (not shown) in the rear seat 1 so as to be maintained in the up-down direction.

Above the operating body 19, there is provided an operation lever 21 which can turn the front end side upward about a fulcrum 21a.

The lower end of the operating lever 21 is
By lifting the front end of the operation lever 21 upward, the operating body 19 can be pushed down against the compression spring 20 at its lower end.

The structure of the inner slide rail 2 (see FIGS. 2 and 4): The outer slide rail 3 is also provided on the bottom surface of the lower rail 9 of the inner slide rail 2 and in the seating area A.
Four lock groove portions 12 similar to the above are formed.

In the luggage compartment expansion area B, two second
Only the groove 22 is formed, and nothing is formed on the rear side.

On the other hand, at the front end of the upper rail 7 of the inner slide rail 2, there is provided a second cam 24 as a "second stopper" rotatable around a shaft 23 as a "rotating shaft" along the left-right direction. Have been.

The upper ends of the rear ends of the second cams 24 are connected to each other by pins 26 penetrating in the left-right direction via cutouts 25 formed in the lower edge of the upper rail 7. The pin 26 also penetrates the lower end of an operating body 27 that moves up and down across the upper rail 7.

A tension spring 28 is provided between the upper part of the operating body 27 and the upper end of the upper rail 7, and urges the operating body 27 downward with respect to the upper rail 7. Since the pin 26 is also urged downward by the operating body 27 urged downward, the lower rear end of the second cam 24 is also urged downward.

Above the operating body 27, a substantially L-shaped lock lever 29 which is rotatable about a fulcrum 29a is provided. An arc-shaped long hole 30 is formed at the lower end of the lock lever 29, and a pin 31 formed on the upper part of the operating body 27 is inserted into the long hole 30. A tension spring 32 is provided above the lock lever 29 and urges the lock lever 29 counterclockwise in the figure. This tension spring 32 is stronger than the tension spring 28.

One end of a wire 33 is connected to the upper end of the lock lever 29. The other end of the wire 33 is connected to the reclining device 6 of the rear seat 1. The wire 33 includes an inner wire 33a and an outer wire 33b, and both ends of the outer wire 33b are fixed by metal fittings (not shown).

The reclining device 6 has a structure in which an arm 34 fixed to the seat back 5 is rotatably supported.
At the lower end of the arm 34, a bracket 36 is provided which engages with a pin 35 formed on the arm 34 and rotates counterclockwise when the seat back 5 is tilted forward. The other end of the wire 33 is fixed to this bracket 36,
When the arm 34 is moved forward, the inner wire 33a is pulled. The release mechanism 37 of this embodiment is controlled by the lock lever 29, the wire 33, the bracket 36, and the like.
Are formed.

Next, the operation of the inner slide rail 2 and the outer slide rail 3 will be described.

Operation of the outer slide rail 3 (see FIGS. 5 and 6): The outer slide rail 3 advances the rear seat 1 in the luggage compartment expansion area B to notify the occupant of the luggage compartment enlargement area B. Is prevented at each position of the first groove 14.

That is, the lower portion of the front end of the first cam 16 is pressed against the bottom portion of the lower rail 9 by the urging force of the compression spring 20, so that the rear seat 1 moves forward toward the cargo room expansion area B. By letting
The lower part of the front end of the first cam 16 falls into the first first groove 14 and engages with it.

Therefore, the rear seat 1 is prevented from further advancing, and the occupant knows that the rear seat 1 has entered the luggage compartment expansion area B.

In the engagement of the first cam 16 with the first groove 14, only forward movement is prevented, and backward movement is possible.
Rear seat 1 is unstable.

Therefore, even if the occupant sits on the rear seat 1 in the luggage compartment expansion area B, the occupant can know that the luggage compartment is the enlargement area B due to the instability, and the occupant sits on the rear seat 1. I will never continue.

Even if the rear seat 1 can move backward in this way, the lower portion of the front end of the first cam 16 enters the first groove portion 14 with a predetermined urging force. It will also engage with the rear end of the first groove 14,
The rear seat 1 on which the occupant is not seated does not move backward due to inertia or the like. However, when the occupant is seated, the occupant moves backward due to the back pressure of the occupant and becomes unstable as described above.

When the rear seat 1 is advanced to the next first groove portion 14 in the luggage compartment enlarged area B, as shown in FIG. Since the one cam 16 rotates clockwise and the lower part of the front end thereof is disengaged from the first groove part 14, it can be advanced.

The first cam 16 can be engaged with the first groove 14 by returning the operating lever 21 to the position of the first groove 14 or a position immediately before the first groove 14.

As described above, by operating the operation lever 21, the rear seat 1 can select an arbitrary first groove portion 14 in the luggage compartment enlarged area B. It is possible to obtain the luggage compartment R 'enlarged to the desired front and rear size.

Operation of the inner slide rail 2 (see FIGS. 7 and 8):
, The forward and backward movement of the rear seat 1 is locked in cooperation with the forward slide by the outer slide rail 3.

That is, in the state in which the seat back 5 is raised, the wire 33 is not pulled, and the operating body 27 is pulled up by the lock lever 29 urged by the strong tension spring 32. The lower rear end of the second cam 24 is also disengaged from the second groove 22.

Therefore, when the seat back 5 is raised, the movement of the rear seat 1 is controlled by the outer slide rail 3.
Governed by the side structure.

That is, since the engagement of the second cam 24 is released, the rear seat 1 can be operated by the function of the first cam 16.
Only backward movement is possible. Therefore, when returning the rear seat 1 to the original sitting area A, the rear seat 1 may be moved backward as it is. When the rear seat 1 enters the seating area A, the original slide lock 13 is engaged in the lock groove 12, and the forward / backward movement of the rear seat 1 is locked, so that the occupant can sit securely.

When the seat back 5 is moved forward, the wire 33 is pulled, and the lock lever 29 rotates clockwise against the tension spring 32.
7 is pushed down by the tension spring 28 and the second
The lower portion of the rear end of the cam 24 is dropped into the second groove portion 22 so that the lower portion of the rear end of the second cam 24 and the rear end of the second groove portion 22 are engaged. As a result, the rearward movement of the rear seat 1 is prevented.

On the other hand, on the outer slide rail 3 side, the forward movement of the rear seat 1 is locked by the first cam 16 because the forward movement is prevented by the first cam 16.

As described above, even if the forward / backward movement of the rear seat 1 is locked, the occupant can move the rear seat 1 in the luggage compartment expansion area B because the seat back 5 is in the forwardly tilted state. There is no accidental seating.

The operating body 28 and the lock lever 29 are
Since the pin 31 and the long hole 30 are connected to each other, even when the second cam 24 is engaged in the second groove 22 (the state shown in FIG. 8), the operation lever 21 on the outer slide rail 3 side can be used. As long as the first cam 16 is only removed from the first groove 14, the rear seat 1 can be advanced while the seat back 5 is tilted forward.

[Brief description of the drawings]

FIG. 1 is a side view showing a movement range of a rear seat according to an embodiment of the present invention.

FIG. 2 is a plan view showing a bottom portion of a fixed rail.

FIG. 3 is a perspective view showing a structure on an inner slide rail side.

FIG. 4 is an exploded perspective view showing a main part structure on an outer slide rail side.

FIG. 5 is an explanatory side view showing an engagement state of a first cam.

FIG. 6 is an explanatory side view showing a disengaged state of the first cam.

FIG. 7 is an explanatory side view showing a disengaged state of a second cam.

FIG. 8 is an explanatory side view showing an engagement state of a second cam.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rear seat 2 inner slide rail 3 outer slide rail 7 upper rail (movable rail) 8 floor 9 lower rail (fixed rail) 12 lock groove 13 slide lock 14 first groove 15 shaft (rotating shaft) 16 first cam (first stopper) 21 Operation lever 22 Second groove portion 23 Shaft (rotating shaft) 24 Second cam (second stopper) 37 Release mechanism R Luggage compartment R 'Expanded luggage compartment A Seating area B Luggage enlargement area X Left-right direction Y Front-rear direction

Claims (6)

[Claims] 1. A pair of left and right fixed rails fixed to a floor and a pair of left and right movable rails fixed to a rear seat are respectively combined to form a pair of left and right slide rails. In a vehicle rear seat slide device which can move forward and backward from a seating area in front of a luggage compartment to a luggage compartment enlargement area, the movable seat of the one slide rail is engaged with a fixed rail in the luggage compartment enlargement area to only advance the rear seat. And a control lever for releasing the engaged state of the first stopper. 2. A first stopper, which is a first cam rotatable about a rotation shaft provided on a movable rail, wherein the first cam has a lower front end in a first groove formed in a bottom surface of the fixed rail. The slide device for an automobile rear seat according to claim 1, wherein the engagement of the rear seat prevents the rear seat from advancing. 3. The movable rail of the other slide rail,
A second stopper is provided which engages with the fixed rail in the luggage compartment enlarged area to prevent only rearward movement of the rear seat when the seat back of the rear seat is tilted forward, and releases the engaged state of the second stopper as the seat back is raised. The slide device for a rear seat of an automobile according to claim 1, further comprising a release mechanism that performs the release. 4. A second stopper, which is a second cam rotatable around a rotation shaft provided on a movable rail, wherein the second cam has a lower rear end in a second groove formed in a bottom surface of the fixed rail. 4. The slide device for an automobile rear seat according to claim 3, wherein the rearward movement of the rear seat is prevented by engaging the rear seat. 5. A slide lock provided on a movable rail is engaged with a lock groove formed on a bottom surface of a fixed rail,
5. The rear seat according to claim 3, wherein the front and rear positions of the rear seat in the seating area are locked, and the first groove and the second groove are formed on a front and rear movement trajectory different from the lock groove. Sliding device for automobile rear seats. 6. The slide device for an automobile rear seat according to claim 1, wherein the fixed rail is buried in the floor.