JPH0787804B2 - 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, and the swing lever that pivots the tooth member and the tooth member that can be engaged and disengaged with the lower arm are pivotally supported. An upper arm fixed to the back is rotatably biased to the lower arm to pivotally support it, a lock pin is projected from one end of the upper arm, and a spring is mounted between the upper arm and the lower arm. A catch lever that can be engaged with and disengaged from the lock pin is rotatably supported on the lower arm, and a link lever that can abut against a part of the catch lever is attached to the swing lever. A two-stage folded recliner connected to the bar was constructed.

[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.

Also, when the passenger in the rear seat gets off the vehicle, he / she can step on the foot pedal, and if the operating lever is turned, the engagement between the tooth member and the lower arm is released in the same manner as described above, and the lower arm is provided with a spring spring for urging it. It tilts forward with force and stops at a specified angle. Furthermore, when making the table, pull the operation lever to tilt the seat back forward, and then push down the pulled operation lever slightly, the link lever connected to the swing lever moves upward, and the tip of the link lever moves. The pin on the abuts on the catch lever to rotate it, releasing the engagement with the lock pin on the lower end of the upper arm. Therefore, the upper arm becomes rotatable, so Rotate to a substantially horizontal position.

Furthermore, 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, the pin of the upper arm engages with the catch lever, and the upper arm and the lower arm. Unify.

[Embodiment] Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 5. In FIGS. 1 and 2, 1 is a base plate, which is fixed to a seat cushion A of a 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. The rotation of the pin 5 is regulated at a predetermined angle via the pin 5. 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. 11 is a catch lever, which is an axis for the lower arm 2.
An engaging portion that is rotatably supported via 12 and that a spring 13 is elastically mounted between the upper arm 8 and the upper arm 8 so that the spring 13 is urged to rotate in a clockwise direction and engages with and disengages from the lock pin 10 of the upper arm 8. 14 is formed and the lever portion 15 is integrally extended.
Have. Reference numeral 16 denotes an off-lever, which is rotatably supported by the lower arm 2 via a shaft 17 and includes a curved guide portion 18 that abuts the lock pin 10 and lever portions 19 and 19a that form an engaging portion of the pin 5. Formed, and is urged to rotate counterclockwise by a spring 20. Reference numeral 21 is a walk-in lever, which is rotatably supported by the shaft 3, a lever portion 22 that abuts against the lever portion 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 swing 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 swing lever, which is a cam
The pin 36 has a crank shape integrally connected to the cam 39 via the embossed portion 44 and is rotatable integrally with the cam 39 via the shaft 40. The pin 36 engaging with the long hole 37 of the operation lever 26 has one end portion. It is projected. Reference numeral 45 denotes a link lever, one end of which is connected to the swing lever 43 via a shaft 46, and the other end of which is provided with a pin 47 protruding from the lever portion 15 of the catch lever 11. Reference numeral 48 denotes a link, one end of which is pivotally supported by the link lever 45 and the other end of which is pivotally supported by the holder plate 31.

A damper housing 50 in which the shaft 12 of the catch lever 11 is 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 provided in the upper arm 8. It can be pressed against the side surface. Then, a line connecting the shaft 12 of the catch lever 11 and each center of the lock pin 10
And the line b connecting the lock pin 10 and the shaft 9 of the upper arm 2 intersect at 90 degrees or less.
The opening direction of 11 is the same as the escape direction of 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 rocking lever 43 counterclockwise about its shaft 40, and one end 42 of the cam 39, which rotates integrally with the rocking lever 43, engages with the recess 41 of the tooth member 32. Member 32
Is rotated clockwise about its shaft 33, and the tooth portions 35, 34 are disengaged from each other, so that the lower arm 2 becomes rotatable about the shaft 3, and the lower arm 2 is urged to rotate. The force of the spring 6 causes the lower arm 2 to fall forward because the seated person rests his / her back on the seatback B and the load is applied to the upper arm 8 by the force of the spring 6. Then, the upper arm 8 is tilted backward at a desired angle against the force of the spring 6,
When you release the operating lever 26 and return it to its original state, the operating lever 26
Is rotated counterclockwise by the force of the spring 30 to cause the pin 36 to rotate the swing lever 43 in the clockwise direction, whereby the cam 39 is rotated in the clockwise direction and the one end portion 42 thereof is the concave portion of the tooth member 32. The tooth member 32 is rotated counterclockwise so that its tooth portion 35 meshes with the tooth portion 34 of the lower arm 8 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 passenger in the rear seat gets off, as shown in FIG. 4, the operation lever 26 is rotated upward or the operation lever 26 is moved upward.
When the occupant of the rear seat depresses the foot pedal 29 integrated with, the operating lever 26 rotates clockwise around the shaft 3 and the engagement of the tooth portions 35 and 34 is released in the same manner as the reclining operation. Then, the lower arm 2 becomes rotatable about the shaft 3, the lower arm 2 tilts forward by the force of the spring spring 6, the pin 5 moves to the left end of the elongated hole 4, and the lower arm 2 stops tilting. To do. Then, the lever portion 15 of the catch lever 11 abuts the pin 47 of the link lever 45 in conjunction with the forward tilting motion of the lower arm 2, and the catch lever 11 is slightly rotated counterclockwise about the shaft 12, The engagement between the engagement portion 14 and the lock pin 10 is incompletely locked. When the lower arm 2 tilts forward, the lever portion 19 of the off-lever 16 contacts the lever portion 22 of the walk-in lever 21 and rotates it about the shaft 3 in the counterclockwise direction. The length is pulled to unlock the walk-in mechanism C, and the seat moves forward along the slide rail.

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 link lever 45 is stopped by being pushed by the lever portion 15 of the catch lever 11 and moved downward, whereby the operation lever 26 is set to the upper limit 26a. To position. Therefore, as shown in FIG. 5, when the operation lever 26 is pushed down to the intermediate position 26b, the operation lever 26 rotates about the shaft 3 in the counterclockwise direction by a predetermined angle, and the swing lever 43 moves the shaft 40. The link lever 45 moves upward as the center rotates clockwise, and the pin 47 at the upper end of the link lever 45 moves to the lever portion 15 of the catch lever 11.
, The catch lever 11 rotates counterclockwise about the shaft 12, so that the engagement portion 14 and the lock pin 10 in the incomplete lock state are released, and the upper arm 8 rotates about the shaft 9. It becomes possible. That is, as described above, the catch lever 11 is slightly rotated in advance in conjunction with the forward tilting motion of the lower arm 2 and the crossing angle of the lines a and b is 90 degrees or less, so that the lock pin 10 is Since it is easy to escape from the engaging portion 14, the upper arm 8 is dampered.
The force required to operate the catch lever 11 that has been pressed against the 51 with the operation lever 26 is light. Then, when the seat back B is pushed forward, the upper arm 8 rotates counterclockwise about the shaft 9, the pin 13a for locking the spring 13 engages with the recess 2a of the lower arm 8, and Along with the force of the spring 13, a substantially horizontal position (table) R is held forward.

Then, when the upper arm 8 rotates as described above,
As shown in FIG. 5, since the lock pin 10 escapes from the guide portion 18 of the off-lever 16 pushing the lever portion 22 of the walk-in lever 21, the spring 20 causes the lever portion 19a to move counterclockwise about the shaft 17 in the counterclockwise direction. Since the lever portion 19 separates from the lever portion 22 until it hits the pin 5, the walk-in lever 21 rotates clockwise about the shaft 3 by the force of the spring 54 that pulls the wire 23, and thus the walk-in mechanism. C is locked again, the seat moved forward along the slide rails 52, 52 is fixed, and the table-shaped recliner is stably held without rattling.

Then, in order to make the table-shaped recliner as a seat as described above, in the state shown in FIG. 5, the upper arm 8 at the substantially horizontal position R is rotated clockwise about its axis 9, Lock pin 10 is off lever 16
Abutting against the guide portion 18 of the off lever 16, the off lever 16 is rotated clockwise about the shaft 17, and the lever portion 19 pushes the lever portion 22 of the walk in lever 21 again to rotate the walk in lever 21 around the shaft 3. Rotate counterclockwise, pull the wire 23 again to unlock the walk-in mechanism C, and lock the engagement pin 14 of the catch lever 11 with the lock pin.
10 is engaged and the side portion of the upper arm 8 is a damper
While contacting 51, the pin 13a moves from the recess 2a, and the upper arm 8 and the lower arm 2 are integrally connected. Therefore, when the seat is moved rearward along the slide rails 52, 52 and the seatback B is pushed backward at a desired angle against the force of the mainspring spring 6,
Similar to the above-described reclining operation, the tooth member 32 and the tooth portions 35, 34 of the lower arm 2 mesh 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 FIGS. 4 and 5 are operation explanatory views when tabulating. Is. 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, 26 …… Operating lever, 29 ……
Foot pedal, 32 …… Tooth member, 34,35 …… Tooth, 36
...... Pin, 37,38 …… Slot, 39 …… Cam, 43 …… Swing lever, 45 …… Link lever, 47 …… Pin

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 rotatable with respect to the lower arm while axially supporting the tooth member that can be engaged with and disengaged from the lower arm and the swing lever that rotates the tooth member, respectively. It is urged and pivotally supported, a lock pin is projectingly provided at one end of the upper arm, a spring is mounted between the upper arm and the lower arm, and a catch lever that can be engaged with and disengaged from the lock pin is rotated around the lower arm. A two-stage folding reclining device, characterized in that a link lever movably supported and capable of contacting a part of the catch lever is connected to the swing lever. Over.