JP2004210160A - Tip-up seat for automobile having interlock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interlocking mechanism of a simple structure including a basic configuration of a tip-up mechanism. <P>SOLUTION: A regulation lever 6 comprising a first arm part 6a and a second arm part 6b is fitted to a side surface of an upper rail 2 in an oscillating manner, a stopper 7 abutted on a lower end side of the first arm part 6a is disposed on an inner bottom surface of a lower rail 1, and a long guide hole 8 along an upper side of the second arm part 6b is formed in a side surface of a side bracket 3. In addition, a locking pin 9 abutted on the upper side of the second arm part 6b to slidably hold it by the guide hole 8 is provided on a lower end side of a working rod 9, and the working rod 9 is diagonally fitted between a seat cushion 5 and a side bracket 3. An interlocking mechanism to maintain the entire seat in a forwardly non-movable manner unless the seat cushion 5 is sprung up, and unlock the entire seat in a forwardly movable manner if the seat cushion 5 is flapped. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides an automotive chip-up seat having an interlock mechanism that keeps the entire seat immovable forward unless the seat cushion is flipped up, while unlocking the entire seat forwardly movable when the seat cushion is flipped up. It is about.
[0002]
[Prior art]
As a slide seat for automobiles, a second or third seat is placed behind the front seat, and the seat cushion is chipped toward the seat back in a standing position to secure the occupant's walk-in space and luggage space in the car. It has been proposed that a rear seat be flipped up by an up mechanism, and a rear rail be mounted on a slide rail behind the front seat so as to be able to move in one direction (Patent Document 1).
[0003]
The automobile slide seat, together with a tip-up mechanism that flips the seat cushion toward the seat back in the standing position, keeps the entire seat immovable forward unless the seat cushion is flipped up, while flipping the seat cushion And an interlock mechanism for unlocking the entire seat so as to be movable forward.
[0004]
The interlock mechanism is assembled so as to interlock with each other in the same mechanism as the tip-up mechanism, so that the structure of the entire mechanism is complicated. In particular, the tip-up mechanism is operably assembled with an interlock mechanism and another operation lever, and is operably assembled with an electric motor separately from the interlock mechanism. For this reason, a simple structure is preferable as the interlock mechanism.
[0005]
[Patent Document 1]
JP-A-9-188170
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide a tip-up sheet for an automobile having an interlock mechanism having a simple structure including a basic configuration of the tip-up mechanism.
[0007]
It is another object of the present invention to provide an automotive chip-up sheet having an interlock mechanism having a simple structure that does not require a footprint installation area.
[0008]
[Means for Solving the Problems]
In the automotive chip-up sheet according to claim 1 of the present invention, the lower rail installed on the vehicle body floor, the upper rail slidably supported by the lower rail, and the side brackets rising from the upper rail are respectively paired left and right. The seat back is supported upright between the rear portions of the side brackets, and the seat cushion is pivotally connected between the front portions of the side brackets, allowing the seat cushion to jump from the seated position to the seat back with the left and right pivots. It can be assembled in
A substantially inverted L-shaped regulating lever formed from a first arm portion facing the bottom side of the lower rail and a second arm portion facing the rear side of the side bracket from the upper end side of the first arm portion is provided. The first arm portion is pivotally attached to the side surface of the upper rail, and the return spring is hung between the vicinity of the first arm portion below the pivot and the front side of the upper rail, and the regulating lever is swingably mounted.
A long hole-shaped guide hole is provided with a stopper capable of contacting the lower end of the first arm on the inner bottom surface of the lower rail in a longitudinal direction closer to the front, and extending in the front-rear direction along the upper side of the second arm. An operating rod provided at a lower end side of the side bracket, the locking pin being provided in contact with the upper side of the second arm portion so as to be slidably fitted and held in the guide hole. Position the locking pin of the rod at the rear end of the guide hole, and pivotally connect the upper end of the operating rod to the lower side of the seat cushion, which is away from the pivot axis. attachment,
If the seat cushion is not flipped up, the locking pin is kept in contact with the upper side of the second arm, and the regulating lever contacts the stopper at the lower end of the first arm to keep the entire seat immovable forward. When the seat cushion is flipped up, the locking pin moves to the front end side of the guide hole with the operating rod rising substantially vertically, the regulating lever presses the locking pin moved toward the front end of the guide hole, and the first arm An interlock mechanism is mounted on the upper end of the stopper at the lower end of the portion to unlock the entire sheet so as to be movable forward.
[0009]
In the tip-up seat for an automobile according to claim 2 of the present invention, the operating rod is disposed inside the side bracket facing the seat cushion, and the projecting end side of the engaging pin projecting outward from the inside of the guide hole is formed. The restricting lever is disposed outside the side bracket in contact with the upper side of the two-arm portion, and the entire mechanism including the operating rod and the restricting lever is provided in the lower rail mounting surface where the stopper is disposed. I have.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, with reference to the accompanying drawings, the illustrated embodiment has a tip-up mechanism that flips up a seat cushion toward a seat back in a standing posture in order to secure a walk-in space for an occupant, a luggage space in a vehicle, and the like. It is applied to constitute a rear seat that can move forward behind the front seat with the slide rail as a whole. The tip-up mechanism is assembled so that the seat cushion is manually flipped up, and is automatically operated by an electric lever or a mechanical operation using an operation lever different from an interlock mechanism described later.
[0011]
The rear seat includes a lower rail 1 installed on a vehicle body floor as shown in FIG. 1 (only one side is shown), an upper rail 2 slidably supported by the lower rail 1, and a side bracket 3 rising from the upper rail 2. Are provided on the left and right pairs, respectively, and the entire seat including the upper rail 2 is provided so as to be movable forward (in the direction of arrow X) or rearward in the vehicle by the lower rail 1.
[0012]
The seat back 4 includes a reclining mechanism and the like, and is supported upright between rear portions of the side brackets 3. The seat cushion 5 is attached to the base of the cushion frame 5a by pivotally connecting the cushion frame 5a between the front portions of the side brackets 3 with a pivot 5b. The seat cushion 5 includes an under frame 5c projecting from the front of the side bracket 3, receives the cushion frame 5a from the lower side at the distal end side of the under frame 5c, maintains a sitting posture, and faces the seat back 4 in the upright posture. It is attached so as to be able to jump up by the pivot 5b.
[0013]
The interlock mechanism includes a substantially inverted L-shaped regulating lever 6.
The regulating lever 6 is formed of a first arm 6a facing the bottom surface of the lower rail 1 and a second arm 6b facing the rear of the side bracket 3 from the upper end of the first arm 6a. The regulating lever 6 pivotally connects the middle abdomen of the first arm portion 6a to the side surface of the upper rail 2 with the pivot 6c, and also returns the return coil spring 6d to the vicinity of the lower portion of the first arm portion 6a below the pivot and the front side of the upper rail 2. It is mounted so that it can swing by hooking it between.
[0014]
A stopper 7 that can contact the lower end of the first arm portion 6a with respect to the regulating lever 6 is disposed on the inner bottom surface of the lower rail 1 in a longitudinal direction closer to the front in the forward direction of the entire sheet. The side bracket 3 is provided with a long hole-shaped guide hole 8 along the upper side of the second arm portion 6b so as to extend in the front-rear direction on the side surface of the side bracket 3. The guide hole 8 has a rear end 8a formed in an opening shape having a larger diameter than a general hole width so that a locking pin described later can be fitted therein.
[0015]
The interlock mechanism further includes an operation rod 9. The operating rod 9 is provided at its lower end with a locking pin 9a which is brought into contact with the upper side of the second arm portion 6b to slidably fit in and hold the guide hole 8 in the guide hole 8. The operating rod 9 has a locking pin 9a located on the rear end side 8a of the guide hole 8 and an upper end side pivotally attached to a lower side of the cushion frame 5a separated from the pivot 5b of the seat cushion 5 by a pivot 9b. Therefore, it is attached diagonally between the seat cushion 5 and the side bracket 3.
[0016]
As the interlock mechanism, as shown in FIG. 2, the operating rod 9 is disposed inside the side bracket 3 facing the seat cushion (not shown).
Further, the restricting lever 6 is disposed outside the side bracket 3 with the protruding end side of the engaging pin 9 b protruding outward from the inside of the guide hole 8 abutting on the upper side of the second arm portion 6 b. Thus, the entire mechanism including the operating rod 9 and the regulating lever 6 is provided so as to be located within the installation surface of the lower rail 1 on which the stopper 7 is provided.
[0017]
In FIG. 1, reference numerals 10 and 11 denote rolling rollers of the upper rail 2, 12 denotes a lock piece of the upper rail 2, 13 denotes a lock release lever of the lock piece 12, and 14 denotes a return coil spring of the lock release lever 13. In FIG. 2, reference numerals 10a and 10b denote rolling rollers attached to the front side of the upper rail 2, and reference numerals 15a and 15b denote seals of the lower rail 1 provided with a lip portion which comes into sliding contact with the side surface of the upper rail 2 including the regulating lever 6a. Show the cover.
[0018]
Although the above-described interlock mechanism has been described based on one side of the lower rail 1, the upper rail 2, and the side bracket 3 provided on the left and right pairs, the interlock mechanism is assembled to each part on both sides as the same mechanism. Further, the regulating lever 6 is attached upward from a slit 16 opened in a part of a base for joining and fixing the side bracket 3 integrally with the upper rail 2 (see FIG. 2).
[0019]
In the chip-up seat having the interlock mechanism configured as described above, if the seat cushion 5 is not flipped up, the lock release lever 13 is pushed down as shown in FIG. 3 and the lock piece 12 is retracted upward from the lower rail 1. Even when the entire seat including the upper rail 2 is moved forward, the locking lever 8 remains in contact with the upper side of the second arm 6b, and the regulating lever 6 is moved to the first arm as shown in FIG. Even if it hits the stopper 8 at the lower end side of 6a, it does not swing. For this reason, the entire sheet is kept immovable forward from the position where the regulating lever 6 hits the stopper 8 at the lower end side of the first arm portion 6a.
[0020]
On the other hand, when the seat cushion 5 is flipped up, the locking pin 9a is moved to the front end side 8b of the guide hole 8 by the operating rod 9 which rises in a substantially vertical direction as shown in FIG. Accordingly, the restriction lever 6 is released from contact with the locking pin 9a. Thus, when the lock piece 12 is retracted upward from the lower rail 1 by the lock release lever 13 and the entire sheet including the upper rail 2 is moved forward, the regulating lever 6 contacts the stopper 8 at the lower end side of the first arm portion 6a. The sheet is lifted upward while swinging, so that the entire sheet can be moved forward.
[0021]
At the same time, the restricting lever 6 rises above the stopper 8 at the lower end of the first arm portion 6a and cannot be returned, and the restricting lever 6 moves the locking pin 9a moved to the front end 8b of the guide hole 8 into the second position. Since the two-arm portion 6b presses the seat cushion 5 from below, the seat cushion 5 is maintained in a tip-up state so as not to fall forward.
[0022]
This interlock mechanism includes a substantially L-shaped regulating lever 6 pivotally attached to the side surface of the upper rail 2, a stopper 7 disposed on the inner bottom surface of the lower rail 1, and a seat cushion 5 and a side bracket 3. An operation rod 9 which is mounted obliquely and a return spring 6d of the regulating lever 6 are required members, and the guide hole 8 is provided on the side surface of the side bracket 3 with an engagement pin 9a and pivots 6c and 9b. It can be structured as a structure. At the same time, since the operating rod 9 and the regulating lever 6 are provided within the area of the lower rail 1 on which the stopper 7 is provided, a simple structure that does not take up the footprint installation area can be configured.
[0023]
In the embodiment described above, the regulating lever 6 is mounted on the side surface of the upper rail 2 with the pivot 6c, and the return spring 6d is placed between the vicinity of the lower part of the first arm 6a below the pivot and the front side of the upper rail 2. However, since the side bracket 3 rises integrally with the upper rail 2, depending on the rising width of the upper rail 2, the regulating lever 6 is mounted on the side surface of the side bracket 3 with the pivot 6c, In addition, the design can be changed so that the return spring 6d is hooked between the vicinity of the first arm portion 6a below the pivot and the front side of the side bracket. Therefore, it is interpreted that the bearing position of the regulating lever 6 or the engaging position of the return spring 6d includes the area of the side bracket 3.
[0024]
【The invention's effect】
As described above, according to the automotive chip-up sheet according to claim 1 of the present invention, the substantially inverted L-shaped regulating lever including the first arm portion and the second arm portion is pivotally attached to the side surface of the upper rail. A swingably mounted stopper is provided on the inner bottom surface of the lower rail, and a stopper capable of contacting the lower end of the first arm is provided on the side surface of the side bracket along a long hole-like guide hole along the upper side of the second arm. In addition, since an operating rod provided on the lower end side with a locking pin that abuts on the upper side of the second arm portion and is slidably held by the guide hole is attached diagonally between the seat cushion and the side bracket, Unless the seat cushion is flipped up, the entire seat cannot be moved forward. On the other hand, if the seat cushion is flipped up, the entire seat can be unlocked so that it can be moved forward. It can be configured to the structure.
[0025]
According to the tip-up seat for an automobile according to the second aspect of the present invention, the operating rod is disposed inside the side bracket facing the seat cushion, and the protruding end side of the engaging pin protruding outward from the guide hole. Abuts on the upper side of the second arm part to dispose the regulating lever outside the side bracket, and to install the entire mechanism including the operating rod and the regulating lever within the area of the lower rail in which the stopper is disposed. It can be configured with a simple structure as an interlock mechanism that does not take up the installation area.
[Brief description of the drawings]
FIG. 1 is a side view mainly showing an interlock mechanism of an automotive chip-up sheet according to the present invention.
FIG. 2 is a sectional view mainly showing the interlock mechanism of FIG. 1;
FIG. 3 is an explanatory diagram showing a slide lock released state in the chip-up sheet of FIG. 1;
FIG. 4 is an explanatory view showing a state in which the entire seat is moved forward after the slide lock is released in FIG. 3;
FIG. 5 is an explanatory view showing an interlock release state in the chip-up sheet of FIG. 1;
[Explanation of symbols]
REFERENCE SIGNS LIST 1 lower rail 2 upper rail 3 side bracket 4 seat back 5 seat cushion 5 b pivot of seat cushion 6 regulating lever 6 a first arm 6 b of regulating lever second arm 6 c of regulating lever pivot 7 of regulating lever stopper 8 guide hole 9 operating rod 9 a Engagement pin 9b Pivot of operating rod

Claims (2)

A lower rail installed on the vehicle body floor, an upper rail slidably supported by the lower rail, and side brackets rising from the upper rail are provided in left and right pairs, and the seat back is supported upright between the rear portions of the side brackets. In a chip-up seat for an automobile, a seat cushion is pivotally mounted between front portions of side brackets, and the seat cushion is assembled so that the seat cushion can be flipped up and down with left and right pivots from a seating position toward a seat back.
A substantially inverted L-shaped regulating lever formed from a first arm portion facing the bottom side of the lower rail and a second arm portion facing the rear side of the side bracket from the upper end side of the first arm portion is provided. The first arm portion is pivotally attached to the side surface of the upper rail, and the return spring is hung between the vicinity of the first arm portion below the pivot and the front side of the upper rail, and the regulating lever is swingably mounted.
A long hole-shaped guide hole is provided with a stopper capable of contacting the lower end of the first arm on the inner bottom surface of the lower rail in a longitudinal direction closer to the front, and extending in the front-rear direction along the upper side of the second arm. An operating rod provided at a lower end side of the side bracket, the locking pin being provided in contact with the upper side of the second arm portion so as to be slidably fitted and held in the guide hole. Position the locking pin of the rod at the rear end of the guide hole, and pivotally connect the upper end of the operating rod to the lower side of the seat cushion, which is away from the pivot axis. attachment,
If the seat cushion is not flipped up, the locking pin is kept in contact with the upper side of the second arm, and the regulating lever contacts the stopper at the lower end of the first arm to keep the entire seat immovable forward. On the other hand, when the seat cushion is flipped up, the locking pin moves to the front end side of the guide hole with the operating rod rising substantially vertically, and the regulating lever presses the locking pin moved toward the front end of the guide hole, and An automotive chip-up seat provided with an interlock mechanism that is mounted above a stopper at a lower end of one arm and unlocks the entire seat so as to be movable forward. The operating rod is arranged inside the side bracket facing the seat cushion, and the protruding end side of the engaging pin protruding outward from the inside of the guide hole is brought into contact with the upper side of the second arm portion, and the regulating lever is moved to the side bracket. The tip-up sheet for an automobile according to claim 1, wherein the entire mechanism including the operating rod and the regulating lever is provided outside the mounting surface of the lower rail on which the stopper is provided.

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