JPS61202938A - Rotary face-to-face seat - Google Patents

Abstract

PURPOSE:To make a hook plate lockable so accurately, by forming a lock hole in a support block a rotatable turn block mounted with a seat, while making the hook plate, performing rotary lock release of the turn block, insertable into this lock hole. CONSTITUTION:A turn block 4 is rotatably supported on a support block 1 through engagement between each rail part 3 and support hooks 9-11. In addition, a cushion frame 21 supporting a seat cushion 20 is attached to the turn block 4 so as to make a front part 20a liftable upward. At the above-mentioned, an operating handle 40 performing rotary lock release of the turn block 4 is rotatably set up on a side plate 7 at the backside of the cushion 20 with a hinge plate 41. And, lock holes 44 and 45 to be engaged with the hook plate 42 of the operating handle 40 each are installed in the support block 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotating seat that can face a rear seat by rotating the seat.

(Prior Art) The popularity of cars in recent years has been remarkable, and as a result, cars are not only used to transport people and goods, but are also required to have a structure that allows people to enjoy conversations inside the car. The rotating seat meets this demand. By the way, conventional rotating outer seats mainly have the second row seats 1 to 3 facing the third row seats of a one-box car, and there is no structure around them to prevent rotation. Designing a rotating seat in such a case is relatively easy, and widths that incorporate this are actually produced.

In addition, the conventionally known rotation locking means for the turn block of the rotary seating seat is as shown in FIG.
The turn block is locked by fixing a lock plate C to the operating handle a and engaging the lock hole of the lock plate C with a ball plate d fixed to the support block side. there were.

(Problems to be Solved by the Invention) By the way, in a normal passenger car (sedan, etc.), as shown in FIG. , a parking brake lever j, a seat belt mounting bracket (not shown), and other structures are protruded, and the seat cushion interferes with these structures when attempting to rotate the seat.

Therefore, in order to convert the front seats of normal passenger cars into rotating seats, it is considered essential to lower the surrounding structures or move them to other positions at the expense of maneuverability. In passenger cars, the front seats were not designed to rotate.

In addition, in the case of conventional rotating seat seats, if the ball plate is placed near the rail part of the support block (the part that supports the turn block), it will interfere with the rotation of the turn block, so the ball plate should be placed near the outer edge of the support block. It was placed.

For this reason, a sufficient locking state may be disturbed by falling objects flying out of the console box, and there is a risk that the lock may come off while the vehicle is running, leading to a serious accident.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to enable a rotating seat that can be used as a front seat of a normal passenger car without making design changes that sacrifice the operability of surrounding structures. The goal is to realize the seat.

Still another object of the present invention is to realize a simple rotatable seat that can securely lock the seat.

(Means for Solving the Problems) The present invention solves the above problems by providing a support block that is attached to the floor side and has an annular rail portion inside a central stepped molded portion, and A turn block rotatably supported by a rail part, a rotation locking means for locking the turn block in the normal position of the seat and a position facing the rear, and a rotation locking means disposed on the turn block that locks the turn block in the seat's normal position and the rear facing position, and a rotation lock means disposed on the turn block to lock the turn block in a position where the seat is rotated. The seat cushion has a front portion movable upward to avoid interference, and a seat back tiltably attached to the turn block, and the rotation locking means is rotatably disposed on the turn block. an operating handle fixed to the operating handle, a hook plate fixed to the operating handle, and two vertical surfaces of the stepped molded part of the support block so that the hook plate engages with the seat when the seat is in the normal position and the rear facing position.
It is characterized by comprising a lock hole drilled at the position.

(Function) In the rotating seat of the present invention, since the portion of the seat cushion that interferes with the surrounding structures can be lifted to a non-interfering position, the seat can be rotated without interfering with the surrounding structures during rotation. In addition, a lock hole is drilled in the vertical surface of the stepped molded part of the support block, and a hook plate is inserted into the hole to lock the turn block, so the turn block can be locked near the rail part of the support block.
The lock is unobstructed and safe.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 are explanatory diagrams showing one embodiment (driver's seat) of the present invention, and in these figures, 1 indicates a seat track 2.
The support block 1 is attached to the floor (not shown) of a vehicle body through a support block 1, and a rail portion 3 is provided in an annular shape inside a stepped molded portion at the center of the support block 1. 4
is a turn block rotatable with respect to the support block 1, which includes a pipe 5 bent into an arc shape so as to project forward, and a side plate 6.7 having one end fixed to the end of the vibe 5. and a cover plate 8 fixed to the other end gate of the side plate 6.7.

Reference numeral 9.10 denotes a front support hook, and the support hooks 9 and 1o are fixed to the vibrator 5. Reference numeral 11 denotes a rear support hook, which is molded integrally with the rear plate 8. The lower end portions of the support hooks 9 to 11 are located on substantially the same circumference concentrically with the rail portion 3 and engage with the upper surface of the rail portion 3 via a slider (not shown). is rotatably supported by the support block 1 as described above. The rotation center of this turn block 4 and the center of the pie 150 arc are:
In the case of this embodiment, it coincides with the center of the rail portion 3. Furthermore, the radius of the arc of the vibrator 5 is selected to a size that does not interfere with surrounding structures during rotation. 12 to 15 are guides with a slit-shaped cross section, and support block 1
It is fixed at a position on a concentric circle with the rail part 3 at a distance of 90'' so that the slit direction coincides with the tangential direction of the concentric circle. The stepped pin fits into the guide 12.13 when in the rotational position, 18.19 is also the stepped pin (=J pin) which fits into the guide 14.15, and the pin 16.17 is the side plate 6 of the turn block 4. Bin 18.
19 is fixed to the lower surface of the side plate 7. Therefore, when the turn block 4 is rotated 180 degrees, the bin 16 and the guide 15, the bin 17 and the guide 14, the bin 18 and the guide 13, and the bin 19 and the guide 12 are engaged with each other. These bottles 16-19 and guides 12-15
The reason for providing the support hooks 9 to 11 is to increase the strength of the seat at the normal position and the rear facing position, since it may be difficult to withstand the load applied to the seat with only the support hooks 9 to 11.

20 is a seat cushion on which an occupant sits; 21 is a substantially rectangular cushion frame that supports the seat cushion 20; the cushion frame 21 is attached to the turn block 4 so that the front portion 20a of the seat cushion 20 can be lifted up; It is being Specifically, two concave molded parts 21a and 21b at the rear of the cushion frame 21
However, with the presser plates 23 and 24 bent into a substantially U-shape,
6. A side plate that is slidable and rotatable in the front-rear direction.
It is attached to 7. 25 is a link pivotally supported between the side plate 6 and auxiliary fittings 26 and 27 fixed to the cushion frame 21, and the link 25 is used as a crank;
The concave molded portion 218.21b forms a slider crank mechanism as a slider, and 28 is a fitting member with a substantially C-shaped cross section that is fixed to the front part of the cushion frame 21, and the seat cushion 20 is kept in a flat state. It is fitted onto the vibrator 5 at some point. With the above configuration, when an upward force is applied to the front portion 20a of the seat cushion 20, the link 25 rotates counterclockwise and rises as shown in FIG. 3, and the concave molded portion 21a of the cushion frame 21 21b is guided by the holding plates 23 and 24 and moves forward, the front part of the cushion frame 21 moves upward, and the front part 20a of the seat cushion 20 also moves upward as shown in FIG. 2(b). become. When the seat cushion 20 in a flat state is rotated by 180° (in the direction of the arrow in Fig. 2 (a)), the part that interferes with surrounding structures is the front corner 201 farthest from the rotation center (axis). However, when lifting the front part 20a, this front corner part 2
The length etc. of the link 25 are set so that 0b can be moved upward to the non-crossing position.

3o is a seat back tiltably attached to the turn block 4. That is, one lower corner of the seat back 30 is attached to the side plate 6 via the reclining device 31, and the other lower corner is attached to the plate 37 on the protruding pin 32 of the bracket 36 fixed to the side plate 7. I decided to insert it through the through hole. Therefore, it is pivotally attached to the side plate 7 so as to be tiltable. Here, the reclining device W131 includes an upper arm 33 fixed to the seat back 30 (seat back frame), a lower arm 34 fixed to the side plate 6, and a lower arm 34 fixed to the side plate 6.
It is comprised of an operating lever 35 and the like for adjusting the inclination angle of the upper arm 33 relative to the upper arm 33.

Reference numeral 40 denotes an operation handle for unlocking the rotation of the turn block 4, and is rotatably disposed on the side plate 7 on the back side of the seat cushion 20 with a hinge plate 41. A hook plate 42 is fixed to the middle part of the non-operating part of the operating handle 40, and the distal end thereof biases the operating handle 40 to rotate in the locking direction (clockwise in FIG. 1)! ~Lusion spring 4 is inserted. Reference numerals 44 and 45 indicate lock holes drilled at 180° intervals on the vertical surface of the stepped molded portion of the support block 1, and the lock holes 44 are provided when the turn block 4 is in the non-rotation position (the normal position of the seat). The lock hole 45 engages with the hook plate 42 when the turn block 4 is in the rotation position (position facing the rear of the seat).

Next, the operation of the rotating seat having the above configuration will be explained.

In its normal state, that is, facing forward, this seat
The seat cushion 5 is placed flat on the turn block 3 in the position shown in FIG. 2(a). Therefore, by sitting on the seat in this state, driving etc. can be performed. On the other hand, in order to move from this state to a state facing the carrier seat, as shown in FIG. is removed in advance, the rotation lock of the turn block 4 is released by rotating the operating handle 4o counterclockwise in FIG. 1, and the turn block 4 is rotated 180° in the direction of the arrow in FIG. 2 (A). rotate, lock the rotation of the turn block 4 at that position,
The seat cushion 20 may be placed flat again on the turn block 4. As a result, the seat back 30 naturally moves forward, and the front seat faces the rear seat. Therefore, by sitting on the seat in this state, the user can talk face-to-face with the occupant in the rear seat. After this, in order to drive the car, it is necessary to turn the seat forward again, but in that case, the operation can be performed in the opposite manner to the above.

That is, lift the front part 20a of the seat cushion 20 again, release the rotation lock of the turn block 4 using the operating handle 40, and rotate the turn block 4 by 180 degrees in the direction of the arrow in FIG. 2 (A). The rotation of the turn block 4 is locked at that position, and the seat cushion 20 is placed flat on the turn block 4.

In the case of the above-mentioned rotating seat, since the engagement and release position of the rotation locking means is close to the center of the support block 1, objects falling from the console box cannot reach there, resulting in incomplete locking. does not occur. Also, since the lock holes 44 and 45 are formed on a vertical plane,
Even if an obstacle such as the above-mentioned fallen object is pushed into the vicinity, the hook plate 42 will fit into the lock hole 44, 45 horizontally, so the obstacle will be pushed back outside, and the hook plate 42 will be pushed back to the outside instead of vertically. It is extremely safe compared to directional fitting.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible. For example, the present invention can be applied not only to the front seat but also to the rear seat, and the movement of the seat cushion 20 may be a parallel movement instead of a tilting movement.

(Effects of the Invention) As explained above, in the present invention, since the portion of the seat cushion that interferes with the surrounding structures can be lifted to a non-interfering position, the seat can be rotated without interfering with the surrounding structures during rotation. . In addition, a lock hole is drilled in the vertical surface of the stepped molded part of the support block, and a hook plate is inserted into the hole for locking, so the turn block can be locked near the rail part of the support block, making it easier to lock. Unobstructed and safe.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing the main parts of an embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation during rotation of the seat according to the present invention, and FIG.
The figure is an explanatory diagram of the operation when lifting the seat in the embodiment shown in Figure 1, Figure 4 is an explanatory diagram of the rotation locking means in the conventional rotating seat, and Figure 5 is an illustration of the front seat of a passenger car and its surrounding structures. This is an explanatory diagram. - 1...Support block 2...Seat track 3...Rail part 4...Turn block 5...Vibro, 7...Side plate 8...Rear plate 9-11...Support Hooks 12-15... Guide 16-19... Tiered bin 2
0... Seat cushion 21... Cushion frame 23.24... Presser plate 25... Link 30...
Seat back 31... Reclining device 40... Operation handle 41... Hinge plate 4
2...Hook plate 44.45...Lock hole patent applicant: 1 representative from Shiraki Metal Industry Co., Ltd. Patent attorney: Fuji Ijima, 1 representative

Claims (1)

[Claims] A support block that is attached to the floor side and has an annular rail section inside a central stepped molded section, a turn block that is rotatably supported by the rail section of the support block, and a turn block that is attached to the seat. a rotation locking means for locking the seat cushion in the position and the rear facing position; a seat cushion disposed on the turn block and having a front portion movable upward to avoid interference with surrounding structures when the seat is rotated; the rotation locking means includes an operating handle rotatably disposed on the turn block, a hook plate fixed to the operating handle, and a seat back mounted in a tiltable manner; and lock holes drilled at two positions on the vertical surface of the stepped molded part of the support block so that the hook plate engages with the hook plate when the support block is in the rear facing position.