JPS6317706Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a seat for a vehicle, especially equipped with a rotating mechanism.
Relates to seats in vehicles etc. that allow for direction changes.

Conventionally, when changing direction with this type of rotating seat, due to space limitations within the vehicle interior, the seat back was tilted forward, and the rotating mechanism was unlocked to rotate the seat.

However, the reclining device that adjusts the seatback's elevation and tilts it forward and the locking device of the rotation mechanism are configured so that they are not separately related to each other, so when changing the direction of the seat, there is no need to tilt the seatback forward. Only the rotation mechanism was unlocked, and the seat was rotated in this state, which could cause damage to the seat bag or other equipment inside the seat.

Therefore, the present invention has been developed in view of this point, and by interlocking the forward folding mechanism of the seat bag and the locking mechanism of the rotating mechanism, the lock release operation of the rotating mechanism is performed after the seat bag is folded forward. The present invention provides a seat for a vehicle, etc., equipped with a rotating mechanism.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is the main body of the vehicle seat, 2 is the seat cushion, and 3 is the seat bag. The seat cushion 2 and the seat bag 3 are connected via a reclining device 4, and the seat cushion 2 and the seat frame A rotation mechanism 6 is installed between the seat frame 5 and the seat frame 5, and a lock mechanism 7 of the rotation mechanism 6 is installed on the seat frame 5. The lock mechanism 7 and the reclining device 4 are connected by a release wire 8.

The rotating mechanism 6 is composed of a rotating body 11 fixed to the cushion frame of the seat cushion 2 and a support plate 12 fixed to the seat frame 5 as usual. Engagement holes 13, 13a, 13 at intervals of 180 degrees
b is formed.

Further, the lock mechanism 7 of the rotation mechanism 6 includes a lock plate 17 which is formed on a bracket 14 fixed to one side member 5a of the seat frame 5 in a bifurcated manner at the front thereof with an upright pawl piece 15 and a downward engaging piece 16. is mounted on a shaft 18 so as to be able to swing vertically, and is constantly biased upward by a return spring 19 wound around the shaft 18 to rotate the claw piece 15 to the rotating mechanism 6.
An engaging member 20 is inserted and engaged from below into the engaging hole 13 of the rotating body 12, and brackets 21a, 21 are provided between the frame 5 and both side members 5a, 5b.
A first plate 23 is attached to the rotary lever 22, which is formed by having one end of the horizontal shaft support protrude from the other side member 5b of the frame and bent forward through the frame b. The operating member 25 is fixed and has a pin 24 protruding from the free end of the plate 23 to be engaged with a longitudinally elongated engagement hole 16a of the engagement piece 16.

In the present invention, the lock mechanism 7 constructed as described above and the operating mechanism of the reclining device 4 are made to work together.

That is, the second plate 26 is fixed to the rotary lever 22 of the operating member 25 of the lock mechanism 7, and the reclining device 4 is equipped with a plate 28 that interlocks with the forward tilting lever 27.
6 and 28 are connected by a core wire 8a of a release wire 8. Further, the jacket tube 8b of the release wire 8 is fixed at one end to a bracket 29 attached to the seat frame 5 and at the other end to a bracket 30 attached to the reclining device 4 side.

In addition, in the figure, 31a and 31b are the seat frame 5.
These are slide rails for adjusting the front and rear positions disposed at the outer lower part of both side members 5a and 5b.

Now, when seat 1 is in the normal seating state, lock mechanism 7
The lock plate 17 of the engaging member 20 is biased upward by the return spring 19, and the claw piece 15 of the lock plate 17 of the engaging member 20 is pushed into the engaging hole 1 of one of the rotating bodies 11 of the rotating mechanism 6
3a from below, the rotation mechanism 6 is in a locked state, and the seat cushion 2 is fixed to the seat frame 5, that is, the seat 1 is fixed to the floor side.

To change the direction of the seat 1 from this state, pull up and rotate the rotation lever 22 of the lock mechanism 7 (the third
When the first and second plates 23 and 26 are operated (in the direction of the arrow a in FIGS. and 4), the first and second plates 23 and 26 are rotated in the direction of the arrow b and the direction of the arrow c, respectively. Both plates 23,
26, the first plate 23 is moved to a position within the range where the pin 24 protruding from its free end moves within the vertically long engagement hole 16a of the engagement piece 16 of the lock plate 17, that is, the position shown in FIG. From position A to position B, it rotates in a free state and does not operate the lock plate 17, thereby delaying the unlocking operation. On the other hand, the core wire 8a of the release wire 8 is pulled by the rotation of the second plate 26. Therefore, the forward tilting lever 27 of the reclining device 4 is unlocked via the plate 28, and the seat back 3 is tilted forward.

Then, when the rotation lever 22 is further rotated, the first plate 23 is further rotated in the direction of arrow b,
This rotation causes the pin 24 to come into contact with and press the lower edge of the engagement elongated hole 16a of the engagement piece 16 of the lock plate 17.
is rotated downward against the biasing force of the return spring 19, and when the pin 24 is moved to position C (see FIG. 4), the claw piece 15 is pulled out from the engagement hole 13a of the rotating body 11. The rotation mechanism 6 is unlocked.

After the seat bag 3 is tilted forward in this manner, the rotation mechanism 6 is unlocked, and in this state the entire seat 1 is rotated in a desired direction. At this time, the rotating body 11 rotates with its lower surface slidingly in contact with the tip of the claw piece 15 of the lock plate 17, so that the lock plate 17 is held in a downwardly rotated state. The lifting rotation of 22 can be released. If the seat 1 is rotated (reversed) by 180 degrees in this state, the rotating body 11
The other engaging hole 13b of the lock plate 17 faces the claw piece 15 of the lock plate 17, so that the lock plate 17 is released from being pressed downward and rotated upward by the biasing force of the return spring 19. The claw piece 15 is deeply inserted and engaged into the engagement hole 13b of the rotating body 11, and the rotating body 11 is locked. In this way, the seat 1 is fixed to the floor side in an inverted state.

In this state, the core wire 8a of the release wire 8 is no longer pulled, so the forward tilting lever 27 of the reclining device 4 is not operated, and the seat back 3 can be raised to the seated state. This means that the person can sit facing the person sitting in the other seat.

As mentioned above, the present invention allows the seat back to be tilted forward by operating the forward lever of the reclining device and by operating the rotating lever of the rotation mechanism within a certain range, and by operating the rotating lever beyond a certain range. ,
Since the structure is such that the locking mechanism of the rotation mechanism is released, there is no need to rotate the seat while the seatback is upright, or cause the seatback to fall forward while the seat is rotating. This prevents interference with obstacles and allows the seat to change direction smoothly at all times. In addition, since the seat back is in a forward tilted state during the direction change operation of the seat, there is no danger of the seat being unnecessarily seated, and the structure is simple and the cost is low.

It goes without saying that the present invention is applicable not only to bench-type seats of passenger cars, but also to various passenger seats such as the driver's seat for workers.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example of a vehicle seat according to the present invention, Fig. 2 is an enlarged perspective view of the main part of the seat with some parts omitted, Fig. 3 is a perspective view of the lock part, and Fig. 4 is the same. FIG. In the figure, 1 is a seat, 2 is a seat cushion, 3 is a seat bag, 4 is a reclining device, 5 is a seat frame, 6 is a rotation mechanism, 7 is a lock mechanism,
8 is a release wire, 16 is an engagement piece, 16a is an engagement elongated hole, 17 is a lock plate, 23 and 26 are plates, 24 is a pin, and 27 is a forward tilting lever.

Claims (1)

[Scope of claim for utility model registration] Seat frame fixed to the vehicle floor side Seat cushion installed on this seat frame so that its direction can be changed by a rotation mechanism Seat bag connected to this seat cushion so that it can be folded forward by a reclining device The locking mechanism provided in the rotating mechanism includes a claw piece that engages with the engagement hole on the seat cushion side from below, and an engagement piece that is integrated with the claw piece and has a long hole that is elongated in the vertical direction. It consists of a single lock plate and a rotary lever with a pin that is slidably inserted into a long hole of the engagement piece, and between the rotary lever of the lock mechanism and the forward lever provided on the reclining device, A relief wire is connected, and when the forward lever is activated, the pin of the rotary lever is disposed in the middle position of the elongated hole, so that the forward lever and the rotary lever of the reclining device can be operated within a certain range. 1. A seat for a vehicle, etc., characterized in that the seat back is folded forward and the locking mechanism of the rotation mechanism is released by operating the rotation lever over a certain range.