JP3427722B2 - Vehicle seat - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion flip-up type vehicle seat in which a seat cushion can be flipped up to a storage position along a seat back and turned. In particular, the present invention relates to improvement of the seat cushion flip-up mechanism. 2. Description of the Related Art A van-type recreational vehicle (RV) vehicle is often provided with three rows of front, middle, and rear seats so that a large number of people can ride on it. In this case, the middle and rear seats can be moved forward on the slide rail so that the luggage space behind the rear seat can be expanded according to the load, and the seat cushion of each seat is directed toward the seat back. There is one that can be moved up to immediately after each of the front and middle seats as a flip-up storage. One example is shown in FIG. In the drawing, a bench-type seat 1 is movable with seat legs 11 (only one is shown in the figure) on both sides mounted on a slide rail R extending in the vehicle front-rear direction. The seat back 13 of the seat 1 can be tilted rearward by operating the reclining lever 15, and the seat cushion 12 is operated from the operating position indicated by the solid line by operating the rotating lever 6 from the operating position indicated by the solid line. Back 1
3 can be flipped up and turned to a storage position indicated by a chain line. The seat cushion 12 is flipped up by, for example, a mechanism shown in FIG. In the figure, a substantially rectangular bracket plate 7 provided on a side surface of a seat cushion 12 is rotatably connected to a seat leg 11 by a shaft member 71 at one corner thereof. Each of the bracket plates 7 has a pin 7 at an intermediate position between the other corner and one side.
2, 73 are erected, and a shaft 91 is
The pin 73 is located in the engaging recess 92 of the locking lever 9 which is urged to rotate upward in FIG. 6, and the seat cushion 12 is positioned in the horizontal use position. An upper end of the rotation lever 6 is rotatably connected to the shaft member 71, and is erected on a plate surface of the locking lever 9 in an elongated hole 61 formed in the plate surface of the lever 6. The inserted pin 93 is inserted. When the seat cushion 12 is flipped up, the knob 93 is grasped and the turning lever 6 is turned backward as shown by the arrow in FIG. Pivots down,
The pin 93 is disengaged from the engagement recess 92. When the seat cushion 12 is flipped up to the storage position as shown by a chain line, the pin 72 instead of the pin 73 reaches the engaging recess 92, and the seat cushion 12 is positioned in a vertical posture. In the above-mentioned conventional seat cushion flip-up mechanism, two pins 72 and 73 are provided on the bracket plate 7 and a spring member 8 is provided.
And the locking lever 9 protrudes rearward, which requires a relatively large installation space. In addition, it is necessary to provide a rotation stopper for the seat cushion 12 so that the pin 72 does not excessively pass through the engagement recess 92 of the locking lever 9 at the flipped-up position. Accordingly, the present invention has been made to solve such a problem, and it is an object of the present invention to provide a vehicle seat which does not need to particularly provide a rotation stopper in a seat cushion and has a compact seat cushion flip-up mechanism as a whole. Aim. In order to achieve the above object, according to the present invention, a vehicle seat (12) is provided in which a seat cushion (12) is flipped up to a storage position along a seat back (13) and is rotatable. In 1), the seat cushion (1)
A bracket plate (3) that rotates integrally with 2), a first elongated hole (14) formed in the seat leg (11), and one end rotatably mounted on the bracket plate (3). At the end, a pin (41) inserted into the first slot (14) is provided, and the pin (41) is moved to the first position while the seat cushion (12) rotates between the use position and the storage position. A link arm (4) for reciprocating sliding in a long hole (14), an operation lever (2) operated between an unlocked position and a locked position,
It is formed on the operating lever (2).
The pin (41) is allowed to move in conformity with the long hole (14), and in the locked position, it crosses the first long hole (14) to restrain the pin (41). Slot (2
2). In the present invention, the seat cushion (1)
When rotating 2), the operation lever (2) is moved to the unlock position. Thereby, the second long hole (22)
Matches the first slot (14) and the pin (41) is
Can be moved along the long hole (14), and the seat cushion (12) can be rotated. When the seat cushion (12) is in the use position or the storage position, the pin (41) is located at one end of the first slot (14). When the operating lever (12) is moved to the lock position in this state, the second long hole (22) intersects the first long hole (14), the pin (41) is restrained, and the seat cushion (1) is restrained.
The rotation of 2) is restricted. According to the present invention, a locking lever or the like that protrudes greatly backward as in the prior art is not required, so that the entire device is compact and the installation space is small. Further, when the seat cushion is rotated to the use position or the storage position, the pin reaches one end of the first elongated hole and prevents further rotation of the seat cushion. Therefore, it is necessary to provide a separate seat cushion stopper. Absent. Note that the reference numerals in parentheses indicate the correspondence with specific means described in the embodiments described later. FIG. 1 shows an example of a vehicle seat according to the present invention. The seat 1 is of a bench type, and seat legs 11 (only one is shown in the figure) on both sides are placed on a slide rail R extending in the vehicle front-rear direction and can be moved. By operating the operating lever 2 provided on the seat leg 11, the seat cushion 12 of the seat 1 is flipped up and turned from a use position indicated by a solid line to a storage position indicated by a chain line along the seat back 13 by the following structure. It is possible. FIG. 2 shows the details of the flip-up mechanism of the seat cushion 12. As shown in FIG. In the figure, a substantially triangular bracket plate 3 is provided on a side surface of a seat cushion 12, and the top is rotatably connected to a seat leg 11 by a shaft member 31. The base end of the bracket plate 3 is a shaft 42
A link arm 4 is provided so as to be rotatably mounted on a shaft, and a pin 41 is provided upright at the end thereof. And
This pin 41 is not formed on the seat leg 11 (FIG. 2).
Is inserted into the elongated hole 14 and located at the upper end thereof. The operation lever 2 has a slightly bent letter shape as a whole, and its upper end is rotatably connected to the shaft member 31 and its lower end becomes an operation part 21 and is exposed from the cover of the seat leg 11. (See FIG. 1). The operation lever 2 is rotationally urged downward by a spring member 5 disposed between the side edge of the intermediate portion and the locking portion 111 of the seat leg 11. An elongated hole 22 bent in an L-shape is formed in the middle plate surface of the operation lever 2, and the elongated hole 22 has a shape in which the long side portion 221 matches the elongated hole 14, The short sides 222 are orthogonal to the long holes 14. When the operating lever 2 is at the lower pivot end shown in FIG.
After the end pin 41 of the link arm 4 is inserted into the long hole 14, it is located in the short side 222 of the long hole that intersects with the long hole 14. 22. Thereby, the seat cushion 1
2 is positioned with its rotation about the shaft member 31 restricted. When the seat cushion 12 is flipped up and turned, the operation lever 2 is turned to the upper unlocked position against the spring force of the spring member 5, as shown by the arrow in FIG. As a result, the long side 221 of the long hole 22 of the operation lever 2 and the long hole 14 of the seat leg 11 match, the pin 41 of the link arm 4 can freely move in the long hole 14, and the pin 41 The bracket plate 3 (that is, the seat cushion 12) can be turned upward as shown by the arrow while moving toward the lower end of the hole 14. When the seat cushion 12 further rotates, the pins 41 move back along the long hole 14 toward the upper end again, and when the seat cushion 12 reaches the uppermost storage position shown in FIG. The pin 41 abuts on the upper end surface of the long hole 14 and further rotation of the seat cushion 12 is prevented. When the hand is released from the operation lever 2 in this state, the lever 2 is released as shown by a solid line in FIG.
The spring force returns to the lower locking position (arrow in the figure), and the long side portion 221 of the long hole 22 is displaced from the long hole 14 and at the same time, the short side portion 222 of the long hole 22 intersects the long hole 14 and Slot 1
The pins 41 are restrained by the pins 4 and 22. As a result, the bracket plate 3, that is, the seat cushion 12 is
One rotation is regulated and positioning is performed. When the seat cushion 12 is returned to the use position and rotated, the operation lever 2 may be pulled up again to the upper unlock position to make the long side portion 221 of the long hole 22 coincide with the long hole 14. As described above, according to the present embodiment, the link arm 4 is attached to the bracket plate 3 instead of the conventional locking lever 9.
, And the front end pin 41 is restrained by the seat leg 11 and the long holes 14 and 22 of the operation lever 2 or the restraint is released to perform the positioning and rotation of the seat cushion. It can be compact. Further, in this structure, when the seat cushion 12 is flipped up and rotated, the end pin 41 of the link arm 4 comes into contact with the upper end surface of the long hole 14 of the seat leg 11, so that a separate stopper is particularly necessary as in the related art. Even without the provision, the seat cushion 12 is reliably stopped at the predetermined rotation position. As described above, according to the vehicle seat of the present invention, it is not necessary to particularly provide a rotation stopper in the seat cushion, and the seat cushion jumping-up mechanism becomes compact as a whole.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side end perspective view of a vehicle seat, showing one embodiment of the present invention. FIG. 2 is a front view of the seat cushion flip-up mechanism when the seat cushion is in a use position. FIG. 3 is a front view of the seat cushion flip-up mechanism when the seat cushion is in the middle of rotation. FIG. 4 is a front view of the seat cushion flip-up mechanism when the seat cushion is in a storage position. FIG. 5 is a side end perspective view of a conventional vehicle seat. FIG. 6 is a front view of a conventional seat cushion flip-up mechanism. [Description of Signs] 1 ... Vehicle seat, 11 ... Seat leg, 12 ... Seat cushion, 13 ... Seat back, 14 ... Elongated hole, 2 ... Operation lever, 22 ... Elongated hole, 3 ... Bracket plate, 4 ... Link arm , 41 ... pins.

Claims (1)

(57) [Claim 1] In a vehicle seat capable of flipping up and rotating a seat cushion to a storage position along a seatback, a bracket plate that rotates integrally with the seat cushion, and a seat. A first elongated hole formed in a leg, one end of the bracket plate being rotatably mounted on the bracket plate, and a pin inserted into the first elongated hole at the other end, and the seat cushion is used at a use position. A link arm for reciprocatingly sliding the pin in the first elongated hole while rotating from the first position to the storage position, an operation lever operated between a lock release position and a lock position, and A substantially L-shaped second pin that is formed in the unlocked position to allow the pin to move in alignment with the first elongated hole and to intersect with the first elongated hole to restrain the pin in the locked position. Two long holes Vehicle seat to Bei.