JPH0787805B2 - 2-stage folding recliner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a two-stage folding recliner that can be used instead of a table with the seat back of a seat in an automobile or the like being in a substantially horizontal position.

[Prior Art] Recently, as vehicles become more sophisticated and diversified, for example, among front, middle, and rear seats installed in a so-called one-box car,
In particular, there is known one in which the middle seat can be used instead of the table (see, for example, Japanese Patent Laid-Open No. 59
-131306). This is by pulling the operating lever,
Inclining the seat back forward from the normal seated state,
Moreover, when the operating lever is slightly pushed, the lock lever connecting the upper arm supporting the seat back and the lower arm is rotated to release the engagement between the both, and the upper arm can be freely rotated about its shaft attachment portion. The upper arm is rotated horizontally so that the back surface of the seat back can be used as a table surface.

[Problems to be Solved by the Invention] However, by utilizing the fact that the above-described conventional two-stage folding recliner pulls the operation lever, the seat back automatically leans forward, so that it is easy for a passenger in the rear seat to get on and off. When a passenger in the rear seat intends to provide a foot pedal that can operate the operation lever with his / her foot, it is necessary to use a link or the like for the interlocking structure of the foot pedal and the operation lever, which makes the structure complicated and This will increase the number of points, complicate the assembly process, and increase the cost.

Further, the operation lever of the recliner in the above conventional example is arranged on the front side of the base plate, and the position of the knob of the operation lever cannot be shortened because there is a restriction. Therefore, there is an inconvenience that the arrangement and the shape cannot be changed.

Therefore, in view of the above circumstances, the present invention has been made for the purpose of combining a two-step folded recliner with a foot pedal which is convenient for getting on and off a passenger in the rear seat with a simple structure.

[Means for Solving the Problems] In order to solve the above problems, the present invention rotatably urges and pivotally supports a lower arm to a base plate fixed to a seat cushion, and integrates a foot pedal coaxially with the lower arm. The formed operation lever is rotatably urged to pivotally support the tooth member and the swing lever that can be engaged / disengaged with the lower arm in conjunction with the operation lever, while the upper arm fixed to the seat back is supported. The lower arm is rotatably urged and pivotally supported, and a lock pin is projectingly provided at one end of the upper arm, and the lower arm rotates a catch lever that can be engaged with and disengaged from the lock pin and the swing lever. A two-stage folding recliner is configured by urging the shaft as much as possible and supporting the catch lever so as to abut against a part of the catch lever.

[Operation] According to the above configuration of the present invention, when used as a recliner, when the operating member is rotated to rotate the tooth member, the tooth member and the tooth portion of the lower arm are disengaged, The lower arm becomes rotatable, and when the seat back is tilted at a desired angle and then the operating lever is released, the tooth member and the tooth portion of the lower arm mesh again to hold the tilt angle.

Further, when the passenger in the rear seat depresses the foot pedal or operates the operating lever when the vehicle is in the rear, the meshing between the tooth member and the lower arm is released in the same manner as described above, and the lower arm rotates and urges the mainspring spring. It tilts forward with the force of and stops at a predetermined angle. In the forward tilting process of the lower arm, a part of the catch lever rotates the swing lever and also abuts on the stopper of the lower arm to rotate, so that the engagement with the lock pin becomes a half lock state.

Also, when making a table, if the operating lever is pushed down a little after tilting forward, the rocking lever will rotate in conjunction with the operating lever, and the rocking lever will contact the catch lever and rotate it. , Release the engagement with 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 pivoted forward in the biased direction to a substantially horizontal position, and a table can be formed.

Further, in order to restore the state of the table to the original state of the recliner, the upper arm is rotated from the horizontal position to the inclined state, and the lock pin of the upper arm engages with the catch lever and becomes the upper arm. Integrate the lower arm.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. First
1 and 2, the base plate 1 is fixed to the seat cushion A of the seat. A lower arm 2 is rotatably supported by a shaft 3 projecting from the base plate 1, and is engaged with an arcuate elongated hole 4 formed on the base plate 1 on a circumference of a predetermined radius around the shaft 3. Pin 5
The rotation is restricted at a predetermined angle via. A spring spring 6 is elastically mounted between the shaft 3 and a pin 5 projecting from the base plate 1, and always urges the lower arm 2 to rotate counterclockwise. Reference numeral 8 denotes an upper arm fixed to the seat back B. The upper arm 8 is rotatably supported by the lower arm 2 via a shaft 9, and a lock pin 10 is projectingly provided at a lower end thereof. Reference numeral 11 denotes a catch lever, which is rotatably supported by the lower arm 2 via a shaft 12, and a spring 13 is elastically mounted between the lower arm 2 and the shaft 9 to urge the clockwise rotation to lock the upper arm 8. An engaging portion 14 that engages and disengages with the pin 10 is formed, and
It has a lever portion 15 extending integrally. A pin 16 is projectingly provided on the lever portion 15, and the pin 16 engages with a circular arc-shaped long hole 17 formed in the lower arm 2 around the shaft 12, and when the lower arm 2 tilts forward, the pin 16 is embossed on the base plate 1. It can come into contact with the processed stopper 18. Reference numeral 19 denotes a plate lever, which is coaxial with the lock pin 10 of the upper arm 8 and is connected at a predetermined angle and a predetermined length. Reference numeral 20 denotes a stopper, which is provided so as to project from the upper arm 8 and can come into contact with the side portion of the lower arm 2 when the upper arm 8 falls forward. Reference numeral 21 denotes a walk-in lever, which is rotatably supported by the shaft 3, a lever portion 22 that abuts against the plate lever 19 is formed on the upper end portion, and a wire 23 is connected to the lower end portion.
The wire 23 is housed in a tube 25 that is locked to the base plate 1 with a clasp 24 and extends to the walk-in mechanism C. An operation lever 26 is rotatably supported by the shaft 3, a lever portion 28 for attaching the knob 27 is formed at one end, and a foot pedal 29 is integrally formed at the other end. Reference numeral 30 denotes a return spring, which is elastically mounted between the operation lever 26 and the holder plate 31 to urge the operation lever 26 to rotate counterclockwise in the drawing. A tooth member 32 is rotatably supported by a shaft 33 between the base plate 1 and the holder plate 31, and is a tooth portion formed on the lower end portion of the lower arm 2 around the shaft 3 around a predetermined radius. A tooth portion 35 that meshes with the tooth 34 is provided. Reference numeral 36 denotes a pin, which is an arc-shaped long hole 38 formed in the holder plate 31 and projecting from one end of a sub-lever 43 described later.
And is engaged with an elongated hole 37 formed in the operation lever 26. Reference numeral 39 denotes a cam, which is rotatably supported by the base plate 1 via a shaft 40 and has one end portion 42 which engages with the recess 41 of the tooth member 32. 43 is a sub lever, a cam
It has a crank shape integrally connected with 39 through an embossed portion 44, is rotatable integrally with a cam 39 through a shaft 40, and has the pin 36 projecting from one end thereof. 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 formed into a shape capable of contacting the pin 16 of the catch lever 11. Reference numeral 48 denotes a long hole, which can be interlocked with by engaging a protrusion 49 formed on the swing lever 46 and protruding on the operation lever 12.

A damper housing 50 having the shaft 12 of the catch lever 11 fixed as a stopper is fixed to the lower arm 2, and a damper 51 made of an elastic material such as rubber is housed in the damper housing 50, and the damper 51 is attached to the lower arm 2. It can be pressed against the lock pin 10.

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 53 fixed to the movable side of the slide rail 52.
And a lock lever 56 urged by a spring 54 on the bracket 53 so as to be able to move forward and backward in a lock groove 55 formed at a fixed interval on the fixed-side bottom surface of the slide rail 52. The other end of the wire 23 is connected via a bracket 57. Reference numeral 58 is a release lever.

The operation of the above-described embodiment will be described. In the reclining operation, in FIG. 1, when the operation lever 26 is rotated clockwise at a predetermined angle to the upper limit 26a, the pin 36 is rotated.
Rotates the sub-lever 43 in a counterclockwise direction about its axis 40, and one end 42 of the cam 39 that rotates integrally with the sub-lever 43 engages with the recess 41 of the tooth member 32 and the tooth member 32.
Is rotated clockwise about its shaft 33, and the teeth 35, 34 are disengaged from each other, so that the lower arm 2 becomes rotatable about the shaft 3, and the main arm for biasing the lower arm 2 is rotated. The force of the spring 6 causes the lower arm 2 to fall forward because the seated person rests his back on the seat back B and the load is applied to the upper arm 8 by the force of the spring 6. 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 the original state, the operating lever 26 is rotated counterclockwise by the force of the spring 30. The pin 36 moves to rotate the sub-lever 43 in the clockwise direction, so that the cam 39 rotates in the clockwise direction and one end 42 of the cam 39 comes out of the recess 41 of the tooth member 32, whereby the tooth member 32 moves counterclockwise. The tooth portion 35 is rotated in the direction to mesh with the tooth portion 34 of the lower arm 2, and the set desired inclination angle is maintained. In this way, the reclining adjustment can be freely set from a predetermined inclination angle P suitable for seating to a substantially horizontal position (full flat) Q rearward.

Next, when the rear seat occupant gets off the vehicle, as shown by the solid line in FIG. 4, the operation lever 26 is turned upward or the foot pedal 29 integrated with the operation lever 26 is pushed by the occupant in the rear seat. When stepped on, the operating lever 26 rotates clockwise about the shaft 3, and the tooth portion 3 is rotated in the same manner as the reclining operation.
5,34 are disengaged, the lower arm 2 becomes rotatable about the shaft 3, the lower arm 2 is tilted forward by the force of the mainspring spring 6, and the pin 5 moves to the left end of the elongated hole 4. The lower arm 2 stops tilting. Lower arm 2
When is tilted forward, the plate lever 19 contacts the lever portion 22 of the walk-in lever 21 and rotates it counterclockwise about the shaft 3, so that the wire 23 is pulled by a predetermined length and the walk-in mechanism is pulled. When C is unlocked, the seat moves forward along the slide rail 52.

On the other hand, from this state, the seat back B is moved forward, and
When the table is formed in a substantially horizontal position, the swing lever 46 is pushed by the pin 16 of the catch lever 11 and remains rotated counterclockwise.
26 is located at the upper limit 26a, and pin 1 of the catch lever 11
The 6 comes into contact with the stopper 18 to slightly rotate the catch lever 11 in the counterclockwise direction so that the engagement with the lock pin 10 is in a half-locked state. Therefore, as shown by the phantom line in FIG. 4, when the operating lever 26 is pushed down to the intermediate position 26b, the operating lever 26 rotates about the shaft 3 in the counterclockwise direction by a predetermined angle, and at the same time, the swing lever 46. Rotates clockwise and pushes the pin 16 of the catch lever 11, and the catch lever 11 rotates counterclockwise around the shaft 12. Then, the lock pin 10 is completely disengaged from the engaging portion 14, and the upper arm 8 becomes rotatable about the shaft 9. Therefore, when the seat back B is pushed forward, the upper arm 8 rotates counterclockwise about 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 13 causes the upper arm 8 to move forward. A substantially horizontal position (table) R is held.

Then, when the upper arm 8 rotates as described above,
As shown by the phantom line in FIG. 4, the engagement between the plate lever 19 and the lever portion 22 of the walk-in lever 21 is released, so that the walk-in lever 21 moves the shaft 3 by the force of the spring 58 pulling the wire 23. As the center rotates clockwise, the walk-in mechanism C is locked again, the seat moved forward along the slide rail 52 is fixed, and the table-shaped recliner is stably held without rattling.

In order to make the recliner tabulated as described above into a seat, the upper arm 8 at the substantially horizontal position R is set to the shaft 9 in the state shown by the phantom line in FIG.
When it is rotated clockwise around, the lock pin 10 engages with the engaging portion 14 of the catch lever 11 and the upper arm 8 and the lower arm 2 are integrated. Then, when the lower arm 2 is rotated clockwise about the shaft 3, the plate lever 19 rotates the lever portion 22 of the walk-in lever 21 counterclockwise to unlock the walk-in mechanism C. Therefore, the seat can be moved backward with the seat back B standing up. Therefore, while moving the seat rearward along the slide rail 52,
When the seat back B is pushed backward at a desired angle against the force of the mainspring spring 6, it is shown in FIG. 1 and in the same manner as the above-described reclining operation, the tooth member 32 and the tooth portions 35, 34 of the lower arm 2. Engage with each other, and the inclination angle of the seat back B is maintained at the position P.

[Effects of the Invention] According to the present invention described above, in a recliner in which the seat back tilts forward in two steps to form a table, a foot pedal, which is convenient for a passenger in the rear seat to get off, is linked with the operation lever. Since the foot pedal is formed integrally with the operation lever, and the center of rotation thereof is coaxial with the center of rotation of the lower arm, the configuration is simplified, and the center of rotation of the operation lever is closer to the rear than in the conventional example, The length up to the knob can be increased, which is advantageous in terms of operating force.Furthermore, because the spring of the catch lever is provided on the upper arm, it is possible to eliminate the rattling of the table when it is folded in two steps and made into a table, etc. Produce the effect of.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a right side view, FIG. 3 is a perspective view of a walk-in mechanism, and FIG. 4 is an operation explanatory view when forming a table. A: Seat cushion, B: Seat back, 1 ...
Base plate, 2 ... Lower arm, 3 ... Axis, 8 ...
… Upper arm, 10 …… Lock pin, 11 …… Catch lever, 13 …… Spring, 17 …… Long hole, 18 …… Stopper, 26 …… Operating lever, 29 …… Foot pedal, 32 ……
Tooth member, 34, 35 …… Tooth, 39 …… Cam, 43 …… Sub lever, 46 …… Swing lever

Claims (1)

[Claims] 1. A base plate fixed to a seat cushion rotatably urges a lower arm to rotatably support an axis, and an operatively urged shaft of an operation lever coaxial with the lower arm and integrally formed with a foot pedal. The upper arm fixed to the seat back is rotatably urged to the lower arm to pivotally support the tooth member and the swing lever which can be engaged with and disengaged from the lower arm in conjunction with the operation lever. ,
A lock pin is projectingly provided at one end of the upper arm, and a catch lever that is engageable with and disengageable from the lock pin and the swing lever is rotatably urged to pivotally support the lower arm. A two-stage folding recliner, characterized in that a stopper capable of abutting against the base is projected from the base plate.