JPH0360604A - Two stage recliner - Google Patents

Abstract

PURPOSE:To easily combine a pedal convenient for a rear seat passenger to get in and off to a recliner by pivoting a catch lever provided with a spring for free rotation on a lower arm and providing a base plate with a raised stop capable of contacting part of the catch lever. CONSTITUTION:A catch lever 11 capable of engaging with and disengaging from both a lock pin 10 and a swing lever 26 is pivoted and sprung for free rotation. A raised stop 18 capable of contacting part of the catch lever 11 is formed on a base plate 1. When a rear seat passenger is to get off, either a pedal 29 is depressed or an operation lever 26 is tilted. Then a tooth member 32 is disengaged from the lower arm 2 so that the lower arm 2 is tilted forward with an urging spiral spring 6 and stops at a specified angle. During the forward tilting process of the lower arm 2, part of the catch lever 11 causes the lock lever 26 to rotate while contacting and rotating the stop 18 and making it in a half locked condition relative to the lock pin 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a two-stage recliner that can be used as a table in an automobile or the like by placing the seat back in a substantially horizontal position.

[Prior Art] Recently, with the increasing luxury and variety of vehicles, for example, among the front, middle, and rear seats installed in so-called one-box cars,
In particular, one is known in which the middle seat can be used as a table (for example, in the Japanese Patent Application Publication No. 5
1-131306). This means that when you pull the control lever and tilt the sort pack forward compared to the normal seating position, and then push the control lever slightly, the lock lever that connects the upper and lower arms that support the seat back will rotate. The upper arm is then released from the engagement between the two, making the upper arm freely rotatable around its pivot point, so the upper arm can be rotated horizontally and the back of the seat back can be used as a table surface. This is what I did.

[Problems to be Solved by the Invention] However, it is possible to make it easier for rear seat passengers to get on and off by taking advantage of the fact that the seatback of the conventional two-fold recliner automatically folds forward when the operating lever is pulled. When installing a foot pedal that allows rear seat occupants to operate the operating lever with their feet, it is necessary to use a link etc. to link the foot pedal and the operating lever, which makes the configuration complicated and requires parts. Increasing the number of parts and assembling will complicate the process and increase costs.

In addition, the operating lever of the recliner in the conventional example is located on the front side of the base plate, and there are restrictions on the position of the knob on the operating lever, so it cannot be shortened.
There is a disadvantage that the arrangement and shape cannot be changed.

Therefore, in view of the above-mentioned circumstances, the present invention was made for the purpose of combining a two-stage folding recliner with a foot pedal that is convenient for rear seat passengers to get in and out of the recliner with a simple configuration.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a structure in which a lower arm is rotatably biased and pivotally supported on a base plate fixed to a seat cushion, and a foot pedal is integrated coaxially with the lower arm. The formed operating lever is rotatably biased and pivoted, and in conjunction with the operating lever, a tooth member and a swing lever that can be engaged with and detached from the lower arm are pivoted, while an upper arm fixed to the seat back is pivoted. The lower arm is rotatably biased and pivoted, a lock pin is provided protruding from one end of the upper arm, and a catch lever that can be engaged with and detached from the lock pin and the swing lever is rotated on the lower arm. A two-step folding recliner is configured in which a stopper is protruded from a base plate and can be biased and pivotally supported, and can come into contact with a part of the catch lever.

[Function] According to the above configuration of the present invention, when used as a recliner, when the tooth member is rotated by rotating the operating lever, the tooth member and the teeth of the lower arm are disengaged, and the lower arm is rotated. becomes rotatable, and when the operating lever is released after inclining the seat back at a desired angle, the tooth member and the tooth portion of the lower arm engage again to maintain the inclination angle.

In addition, when a rear seat passenger backs up the vehicle, by stepping on the foot pedal or rotating the operating lever, the tooth member and the lower arm are disengaged in the same manner as described above, and the lower arm is activated by a spring spring that biases the tooth member to rotate. It tilts forward with the force of and stops at a predetermined angle. During this forward tilting process of the lower arm, a part of the catch lever rotates the swinging lever, contacts the stopper of the lower arm, and rotates, so that the engagement with the lock pin becomes a half-locked state.

Also, when turning it into a table, after tilting forward as described above, if you push down the operating lever slightly, the swinging lever will rotate in conjunction with the operating lever, and the swinging lever will come into contact with the catch lever and rotate it. , disengage the lock pin at the lower end of the upper arm.

Therefore, since the upper arm is in a rotatable state, the upper arm is rotated forward in the biased direction to a substantially horizontal position, and can be used as a table.

Furthermore, in order to return from the table-like state to the original Kleiner state, rotate the upper arm from the horizontal position to the tilted state, and the lock pin of the upper arm engages with the catch lever, causing the upper arm to Integrate the lower arm.

[Example] Next, an example of the present invention will be described based on the drawings. 1st
In the figures and FIG. 2, l is fixed to the seat cushion A of the seat by means of a base plate.

2 is a lower arm with a shaft 3 protruding from the base plate l.
The shaft 3 is rotatably supported on the base plate l.
An arcuate long hole 4 opened on the circumference of a predetermined radius centered on
Rotation is restricted at a predetermined angle via a pin 5 that engages with. A spiral spring 6 is loaded between the shaft 3 and a pin 5 protruding from the base plate l, and constantly biases the lower arm 2 to rotate counterclockwise. 8 is seat back B
The upper arm is fixed to the lower arm 2, and is rotatably supported by the lower arm 2 via a shaft 9, and has a lock pin 10 protruding from its lower end. A catch lever 11 is rotatably supported on the lower arm 2 via a shaft 12, and a spring 13 is loaded between it and the shaft 9 to bias the catch lever clockwise to lock the upper arm 8. An engaging portion 14 that engages with and disengages from the pin IO is formed, and a lever portion 15 that extends integrally is provided. A bottle 16 is protruded from the lever part 15,
This pin 16 engages with an arcuate long hole 17 drilled in the lower arm 2 centering on I[h12, and can come into contact with a stopper 18 embossed on the base plate l when the lower arm 2 falls forward.

A plate lever 19 is coaxial with the lock pin IO of the upper arm 8 and connected to the lock pin IO at a predetermined angle and at a predetermined length. Reference numeral 20 denotes a stopper, which is provided in a protruding manner on the upper arm 8 and can come into contact with the side of the lower arm 2 when the upper arm 8 falls forward.

Reference numeral 21 denotes a walk-in lever, which is rotatably supported on the shaft 3, has a lever portion 22 formed at its upper end that comes into contact with the plate lever 19, and has a wire 23 connected to its lower end. The wire 23 is housed in a tube 25 that is secured to the base plate 1 with a catch 24 and extends to the A-fin mechanism C. Reference numeral 26 denotes an operating lever, which is rotatably supported on the shaft 3, and has a lever portion 28 formed at one end to which a knob 27 is attached, and a foot pedal 29 integrally formed at the other end. 30 is a return spring, which is loaded between the operating lever 26 and the holder plate 31;
6 to rotate in the counterclockwise direction in the drawing. A tooth member 32 is rotatably supported on a shaft 33 between the base plate l and the holder plate 31, and has teeth formed on a circumference of a predetermined radius around the shaft 3 at the lower end of the lower arm 2. 34 and a toothed portion 35 that meshes with the toothed portion 34. 36
is a bottle, which is protruded from one end of the sub-lever 43, which will be described later.
It passes through an arcuate long hole 38 formed in the holder plate 31 and engages with a long hole 37 formed in the operating lever 26 . A cam 39 is rotatably supported by the base plate I via a shaft 40, and has one end 42 that engages with the recess 4I of the tooth member 32. Reference numeral 43 denotes a sub-lever, which has a crank shape and is integrally connected to the cam 39 via an embossed portion 44, and is rotatable together with the cam 39 via a shaft 40, with the bin 36 protruding from one end. ing. Reference numeral 46 denotes a swing lever, one end of which is rotatably supported coaxially with the tooth member 32, and the other end of which is supported by the catch lever 11.
It is formed in a shape that can come into contact with the bottle 16 of. Reference numeral 48 denotes a long hole, which is bored in the swinging lever 46 and can be engaged with and interlocked with a protrusion 49 provided on the operating lever 121.1.

Note that the shaft 12 of the catch lever 11 is attached to the lower arm 2.
A damper housing 50 is fixed as a stopper, and a damper 51 made of an elastic body such as rubber is housed in the damper housing 50.
1 can be pressed into contact with the lock pin 10 of the upper arm 8.

As shown in FIG. 3, the walk-in mechanism C includes a slide rail 52 fixed to the floor of the vehicle and a bracket 5 fixed to the movable side of the slide rail 52.
3 and its bracket 531: A lock lever 56 is biased by a spring 54 and provided so as to be movable in lock grooves 55 drilled at regular intervals on the bottom surface of the fixed side of the slide rail 52.
The other end of the wire 23 is connected to the lock lever 56 via a bracket 57.

58 is a release lever.

To explain the operation of the above embodiment, the reclining operation is performed as shown in FIG. 1. When the operating lever 26 is rotated clockwise upward in the figure at a predetermined angle to the upper limit 26a, the bin 36 moves the sub-lever 43 along its shaft 40. One end 42 of the cam 39 rotates counterclockwise around the center, and one end 42 of the cam 39 that rotates together with the sub-lever 43 engages with the recess 41 of the tooth member 32, causing the tooth member 32 to move clockwise around the shaft 33. Since the teeth 35 and 34 are rotated and the teeth 35 and 34 are disengaged, the lower arm 2 becomes rotatable around the sleeve 3, and the spiral spring 6 that biases the lower arm 2 to rotate is activated.
However, since the seated person's back is against the seat back B and the load is applied to the upper arm 8, the lower arm 2 will not fall forward. When the upper arm 8 is tilted backward at a desired angle against the force of the spring 6 and the operating lever 26 is released to return to its original state, the operating lever 26 is rotated counterclockwise by the force of the spring 30. The pin 36 rotates the sub-lever 43 clockwise, and the cam 39 rotates clockwise, causing its one end 42 to escape from the recess 41 of the tooth member 32, thereby causing the tooth member 32 to move counterclockwise. The toothed portion 35 of the lower arm 2 rotates and meshes with the toothed portion 34 of the lower arm 2.
The desired tilt angle that has been set is maintained. In this way, the reclining adjustment can be freely set between a predetermined inclination angle P suitable for seating and a substantially horizontal rearward position (full flat) Q.

Next, when the rear seat occupant exits the vehicle, the rear seat occupant either rotates the operating lever 26 upward, or presses the foot pedal 29 integrated with the operating lever 26, as shown by the solid line in FIG. When depressed, the operating lever 26 rotates clockwise around the shaft 3, and similarly to the reclining operation described above, the locking of the teeth 35° 34 is released, allowing the lower arm 2 to rotate around the shaft 3. Then, the lower arm 2 falls forward by the force of the mainspring spring 6, and the pin 5 moves to the left end of the elongated hole 4, and the tilting of the lower arm 2 stops. When the lower arm 2 falls forward, the plate lever /<-19 comes into contact with the lever part 22 of the walk-in lever 21 and rotates it counterclockwise around the shaft 3, so that the wire 23 reaches a predetermined length. When pulled, the lock of the walk-in mechanism C is released, and the seat moves forward along the slide rail 52.

On the other hand, from this state, seat back B is moved forward, and
When forming a table in a substantially horizontal position, the swinging lever 46 is pushed by the pin 16 of the catch lever 1■ and remains rotated counterclockwise, which causes the operating lever 26 to move to the upper limit 26a. In addition, the pin 16 of the catch lever 11 contacts the stopper 18, causing the catch lever 11 to rotate slightly counterclockwise, and the lock pin 1
0 is in a half-locked state. Therefore, when the operating lever 26 is pushed down to the intermediate position 26b, as shown by the imaginary line in FIG. rotates clockwise, and the catch lever 11
The catch lever 11 rotates counterclockwise about the shaft 12. Then, the lock pin 10 is completely removed from the engaging part 14, and the upper arm 8 is moved to the shaft 9.
It becomes possible to rotate around the center. Therefore, when the seat back B is pushed forward, the upper arm 8 rotates counterclockwise around the shaft 9, the stopper 20 comes into contact with the side surface of the lower arm 2, and stops, and the force of the spring I3 moves the upper arm 8 forward. Almost horizontal position (table) R
hold.

Then, when the upper arm 8 rotates as described above,
As shown by the imaginary line in FIG. 4, the engagement between the plate lever I9 and the lever portion 22 of the walk-in lever 21 is released, so that the walk-in lever 21 pulls the shaft 3 by the force of the spring 58 that pulls the wire 23. The seat rotates clockwise around the center, thereby locking the walk-in mechanism C again, and the seat moved forward along the slide rail 52 is fixed and stably held without turning into a table or causing the Kleiner to wobble.

In order to convert the Kleiner into a table or a seat as described above, in the state shown in the phantom line in FIG.
When rotated clockwise around the lock pin IO
is engaged with the engaging portion 14 of the catch lever 11, and the upper arm 8 and lower arm 2 are integrated. Next, when the lower arm 2 is rotated clockwise about the shaft 3, the plate lever 19 rotates the lever part 22 of the walk-in lever 21 counterclockwise, and the walk-in mechanism C
to unlock. Therefore, the seat can be moved rearward with the seatback B in an upright state. Therefore, when the seat is moved rearward along the slide rail 52 and the seat back B is pushed backward at a desired angle against the force of the mainspring spring 6, as shown in FIG.
In addition, the tooth member 32 and the tooth portions 35 and 34 of the lower arm 2 are engaged with each other in the same manner as in the reclining operation described above, and the P
The inclination angle of the seat back B is maintained at (tW).

[Effects of the Invention] According to the invention described above, in a recliner in which the seat back can be folded forward in two stages to form a table, the foot pedal, which is convenient for rear seat passengers to exit the vehicle, is linked with the operating lever. The foot pedal is integrally formed with the control lever, and its center of rotation is coaxial with the center of rotation of the lower arm, simplifying the configuration.Also, the center of rotation of the control lever is closer to the rear than in conventional models. The length up to the knob can be increased, which is advantageous in terms of operating force.Furthermore, since the spring of the carriage lever is installed in the upper arm, it is possible to prevent the table from wobbling when folded in two stages to form a table. It has the effect of

[Brief explanation of drawings]

FIG. 1 is a front view showing one embodiment of the present invention, FIG. 2 is a right side view, FIG. 3 is a perspective view of the walk-in mechanism, and FIG. 4 is an explanatory view of the operation when forming a table. A...Nut cushion, B...Seat back, 1
...Base plate, 2...Lower arm, 3...
Shaft, 8...Abber arm, lO...Lock pin,
ll Catch lever 13...Spring, 17...
- Long hole, 18...Stopper 26...Operation lever 29...Foot pedal, 32...Tooth member, 3
4.35... Teeth, 39... Cam, 43... Sub-lever, 46... Rocking Figure 2 Figure 3

Claims (1)

[Claims] (1) On the base plate fixed to the seat cushion,
A lower arm is rotatably biased and supported, an operating lever coaxial with the lower arm and integrally formed with a foot pedal is rotatably biased and pivoted, and is engaged with the lower arm in conjunction with the operating lever. A removable tooth member and a swing lever are pivotally supported, while an upper arm fixed to the seat back is rotatably biased and pivotally supported by the lower arm, and a lock pin is protruded from one end of the upper arm. At the same time,
A catch lever that can be engaged with and detached from the lock pin and the swing lever is rotatably biased and supported on the lower arm, and a stopper that can come into contact with a part of the catch lever is provided protruding from the base plate. A two-stage folding recliner.