JPS5851796Y2 - Seat left and right interlocking reclining and forward folding device - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the seat back relative to the seat cushion.
This is a tilt adjustment device that allows you to recline the seat and fold the seatback of a bench-type seat by simply operating one operating lever on one side, and then engage/disengage the operating lever on the opposite side. The seat reclines and forward folds in conjunction with the left and right mechanisms, and is extremely easy to operate, allowing the seat back to fold forward completely so that it overlaps the seat cushion, and adjust the inclination to a nearly horizontal position. The purpose is to provide

In conventional seats in which the pivot point between the seat cushion and the seat back is provided in one place (usually on the seat cushion side), the forward tilt angle of the seat back is approximately 45 degrees with respect to the seat cushion. Since the seats could only be adjusted and the seats could not be folded, it was not possible to store long items.

As a countermeasure against this problem, there is an automobile seat reclining device disclosed in Japanese Patent Application Laid-Open No. 53-30530.
Seat cushion bracket 11 fixed to 2. Seat back bracket 13 fixed to seat back 14
．． An intermediate member 18 is pivotally connected to the seat back bracket 13 on one side and to the seat back bracket 13 on the other side so as to be rotatable relative to the seat back bracket 13. a first pole that can selectively engage with a plurality of engagement portions formed on the seat cushion bracket 11 and restricts rotation of the intermediate member 18 with respect to the seat cushion bracket 11; A second pawl that restricts rotation relative to the member 18, and a lever 16 that disengages the first pawl. When the operating lever 16 is operated, the first pawl and the second pawl are disengaged so that the second pawl is disengaged by the displacement of the first pawl due to the disengagement operation and the rotation of the intermediate member 18 in the forward falling direction. This is an automobile seat reclining device characterized by comprising a connecting member 20 that connects the seat reclining device and the connecting member 20.

However, in the above-mentioned known seat reclining device, the device and parts cannot be made common, and the seat back 14
In order to move the seat forward, it is necessary to perform a two-step operation of reclining the seat using the operating lever 16 and then folding the seat back forward, which is a complicated operation.

Furthermore, since the pivot point of the reclining arm is an elongated hole, there is a drawback that the pivot cannot be fixed firmly.

This invention eliminates these drawbacks.

The invention will be described below with reference to the embodiments shown in the drawings.

30.30 indicates a reclining device attached to the left and right sides of the seat 60, 32 is a seat cushion side bracket fixed to the seat cushion 31, and 36 is a seat back frame 40a forming the seat back 40, with the upper end having a pin 38. It is a pivoted reclining arm.

The seat cushion side bracket 32 has a fixing hole 32 for fixing it to a seat cushion frame (not shown).
a, 32 a and shaft insertion hole 32 b, 32 C, 3
2C and a spiral circumferential spring locking piece 32d, and a support pin 55 having a step is fixed thereto.

42 is a shaft fulcrum fitted into the shaft insertion hole 32b, and a slit for locking the spiral spring 58 to the shaft fulcrum 42).
A is formed, and a flange 42b is formed at the upper end.

The reclining arm 36 is pivotally supported by the pivot point 42, and a sector gear 64 is formed at the base end of the reclining arm 36.

Reference numeral 51 denotes a locking member which is pivotally supported by the middle diameter portion 55b of the support pin 55, and the locking member 51 has a support pin 53 protruding downward and a pin 54 protruding upward. There is.

65 is pivotally supported by the support pin 53 of the locking member 51,
A gear piece having a gear portion 65b that can mesh with the sector gear 64, and the free end of the gear piece 65 is connected to the support pin 55.
A three-pronged portion 65C that limits the amount of pivot of the gear piece 65 is formed to face the large diameter portion 55a of the gear piece 65.

Reference numeral 41 denotes an operating lever that is pivotally supported by the pivot point 42, and the operating lever 41 has a tip portion 5 of the locking member 51.
A roller support pin 50 is fixedly provided to support the roller 63 that comes into contact with the roller 1a.

Further, a lock release member 41 b is formed approximately at the center of the operating lever 41 and is capable of coming into contact with a pin 54 protruding from the upper surface of the lock member 51 .

Further, boss portions 43a and 43b are provided on the operating lever 41 so as to protrude from each other, facing each other around the shaft insertion hole 41a.
a, 43b are designed to slide through arc-shaped long holes 46a, 46b provided in a holder plate (44).

In the morning, the lock member 51. Gear piece 65, operation lever 41
It is a plate-shaped holder plate that covers a part of the holder plate, etc., and the shaft insertion hole 45 provided in the holder plate)-44 has a
A pivot point 42 that pivotally supports the operating lever 41 is inserted,
adapted to be retained with a snap ring (not shown);
In addition, the shaft hole 44b provided at the other end is connected to the small diameter portion 55 of the support pin 55 fixed to the seat cushion bracket 32.
It is fixed at C.

The holder plate 44 has long arc-shaped holes 46 a and 46 b formed at opposing positions centering on the shaft insertion hole 45 , and a flange 47 having a notch at the end of the holder plate 44 . 47 are respectively erected, and the flanges 47.47 are provided with locking portions 47a, 47a for locking wire cables 48.49.

The ends of the wire cables 48 and 49 are attached to the boss portions 43 a and 43 b of the operating lever 41, respectively.

A spring 56 has one end attached to the operating lever 41 and the other end attached to the holder plate 44, and is configured to urge the operating lever 41 in the retracting direction against the operating force.

A hole 36C for pivotally mounting the lock plate 33 is bored in the middle of the reclining arm 36.
A spring locking hole 36d is bored in the front side of the spring.

A downwardly hook-shaped hook 33b is provided at the rear of the spindle hole 33a of the lock plate 33, which is pivotally supported on the reclining arm 36 by a pin 37. The spring 57, which has one end locked in the spring locking hole 33C and the other end locked in the hole 36d of the reclining arm 36, connects the lock plate locking pin 39 protruding from the side of the seat back frame 403. are biased into engagement.

Further, 34 is a length 7L35 formed at the tip of the connecting member 35.
This is a pin that slides on b and is provided protruding inside the lock plate 33.

The proximal end 35a of the connecting member 35 is pivotally connected to the holder plate by a pin 62.

The reclining device 30 with the above configuration is installed on the seat 60.
The wire cables 48 and 49 are connected to the left and right operation levers 41 and 41 of the seat panel 60, respectively.

That is, in the embodiment, one end of the wire cable 48 is connected to the boss portion 43a of the operating lever 41 on the left side of the seat 60, and the other end of the wire cable 48 is connected to the boss portion 43a of the operating lever 41 on the right side of the seat 60. One end of a wire cable 49 is connected to the boss portion 43b of the left operating lever 41 of the cable 60, and the other end of the wire cable 49 is connected to the cable 60.
It is connected to and interlocks with the boss portion 43a of the right operating lever 41 of 0.

Since the wire cables 48, 49 are routed inside the seat cushion 31, the wire cables 48, 49 will not get caught on the slide rail (not shown) of the seat 60, etc. even if the seat 60 is slid. .

Further, since the sector gear 64 provided at the lower end of the reclining arm 36 and the gear portion 65b of the gear piece 65 normally mesh with each other, the seat cushion side bracket 32 and the reclining arm 36 are in a locked state with each other.

When folding down the seat back 40, when the operating lever 41 is rotated clockwise in FIG. 48 is also a holder play) 4
When the wire cable 49, which is engaged with the boss part 43b opposite to the boss part 43a, moves upward along the long hole 46a for sliding the boss part formed in the holder plate) 44, 46b.

Accordingly, the roller 63 pivotally attached to the roller support pin 50 on the operating lever 41 side moves to the tip end 51 of the locking member 51.
the lock release member 41 on the operating lever 41 side away from a
b is attached to the lock member 5 via the pin 54 of the lock member 51.
1 in the counterclockwise direction in FIG.

Therefore, the gear portion 65 of the sector gear 64 and the gear piece 65
b is disengaged, and the reclining arm 36 is rotated counterclockwise in FIG. 2 by the biasing force of the spiral spring 58.

This allows for reclining adjustment.

When the reclining arm 36 exceeds the reclining locked most forward tilted position and further rotates forward in a counterclockwise direction, when the weight of the seatback 40 acts to further tilt the reclining arm 36 forward, the lock plate 33 locks the connecting member 35. Since it is pulled by tilting forward, the lock plate 33 rotates counterclockwise following the reclining arm 36, disengaging from the pin 39 protruding from the seat back frame 40a, and the reclining arm 36 is released. Since it is further folded forward, the seat back 40 can be folded.

In the above embodiment, wire cables are connected to the left and right operation levers, but rods or the like may be connected instead of the wire cables.

With the above configuration, even if the operating levers of the reclining device provided on the left and right sides of the seat are far away for a bench type seat, the reclining release operation can be performed using the operating lever on either the left or right side of the seat. This makes it possible to recline the seat back on the opposite side, making it easier to recline or fold the seat back forward.

As mentioned above, in this invention, the operation lever 41
．． Reclining arm 36. The holder plate 44 has been improved, and a lock plate 33 is attached to the seat back that is pivotally supported by the reclining arm 36, and a connecting member is interposed in which one end is locked to the lock plate and the other end is locked to the holder plate. , and a wire cable pivotally connected to the operating lever via the holder plate operates together with the operating levers on both sides of the seat to enable reclining or folding the seat, and the seat back is When folding the seat forward, if you operate either of the control levers on the left or right side of the seat, the seat back will recline with the reclining arm to a certain angle, and then the force of its own weight will force the seat back to fold forward further.
No special operation is required to fold the seatback forward, and the seat can be folded forward by simply operating one of the left and right operating levers.

The pivot point of the reclining arm is not a long hole, so there is no need to push up the entire seat back using the operating lever.
It is extremely easy to operate.

By reusing most of the parts of the conventional glue-clining device that does not have a seatback forwarding device and adding connecting members, lock plates, etc., we can provide a device that allows the seat to be folded. It can be replaced by changing the parts.

Also, since the seat back can be folded completely forward,
It also has the advantage of being able to store long luggage.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a seat equipped with a left-right interlocking reclining and front folding device according to the present invention, Fig. 2 is an enlarged side view of the left-right interlocking reclining and front folding device, and Fig. 3 is an enlarged front view of one of the reclining devices. Figure 4 is an exploded perspective view of the same as above, Figure 5 is an enlarged side view of the conventional reclining device, Figure 6 is a side view of the seat with the reclining device shown in Figure 5 attached, and Figure 7 is the same as the above. 5
It is a sectional view taken along the line I-I in the figure. 30 is a reclining device, 31 is a seat cushion,
32 is a seat cushion side bracket, 33 is a lock plate, 33b is a hook, 34, 37, 38.39 are pins, 35 is a connecting member, 35b is a long hole, 36 is a reclining arm, 40 is a seat back, 40a is a seat Back frame, 41 is an operation lever, 43a, 43b are boss parts, 42 is a pivot point, 44 is a holder plate, 46
a. 46 b is a long hole, 48.49 is a wire cable, 57 is a spring, 60 is a seat, 64 is a sector gear, 65
is a gear piece.

Claims (1)

[Claims for Utility Model Registration] A reclining arm 36 and an operating lever 41 are pivotally attached to a seat cushion side bracket 32 attached to a seat cushion 31 via a pivot point 42, and a gear piece 65 is pivotally supported on the seat cushion side bracket 32. A reclining device 3 that engages and disengages a sector gear 64 formed on the reclining arm 36 by operating a control lever 41, thereby making the reclining arm 36 tiltable.
0 are provided on the left and right sides of the seat 60, a holder plate 44 is pivotally supported on the pivot point 42, and the holder plate 44 has two arc-shaped long holes 46a and 46b centered on the pivot point 42. Boss portions 43 a and 43 b attached to the operating lever 41 are slidably connected to the elongated holes 46 a and 46 b, and one end of the connecting member 35 is pivotally connected to a holder plate 44. , a seat back frame 40 a forming a seat back 40 in which a lock plate 33 is pivotally supported by a pin 37 is attached to the reclining arm 36 by a long hole 35 b at the other end thereof. A pin 34 that is pivotally supported and attached to the lock plate 33 is slidably fitted into the elongated hole 35b of the connecting member 35, and a pin fixed to the seat back frame 40a is attached to the lock plate 33. A hook 33b is formed that engages and disengages from the pin 39 and holds the seat back frame 40a in an upright state when engaged.
A spring 57 is installed to bias the holder plate 44 in the direction of engagement with the holder plate 44.
6a and 46b are long holes that rotate the holder plate shaver when the operating lever 41 is operated beyond a predetermined stroke, and the long holes 35 of the connecting member 35
b, the operation lever 41 is operated below a predetermined stroke to rotate the reclining arm 36, and when the connecting member 35 is activated, the lock plate 33 is not rotated and the operation lever 41 is moved beyond the predetermined stroke. When the holder plate is rotated, the lock plate 3
In the left and right reclining devices 30, the boss portion 43a of one reclining device and the boss portion 43b of the other reclining device are connected by a wire cable 48, and A left-right interlocking reclining and front folding device for a seat, characterized in that a boss portion 43b of one reclining device and a boss portion 43a of the other reclining device are connected by a wire cable 49.