JPS6245955Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a seat leg structure in a van-type vehicle, mainly a van-type vehicle, in which seats are folded as necessary to load luggage. This invention relates to a leg locking device that can automatically lock or unlock the legs of a seat from the upper surface of a floor.

In a van-type vehicle in which the first and second rear seats are arranged on the floor of the rear interior of the vehicle, for example, one of the rear seats may be folded to increase the space for loading luggage after the rear seats are folded. A seat leg structure has been devised in which the other rear seat is folded so as to be stacked on top.
That is, as a concrete structure for achieving this, for example, as shown in Figs. A first rear seat 24 and a second rear seat 34 are arranged,
Both the first rear seat 24 and the second rear seat 34 are attached to the seat parts 25, 35 by reclining devices L ₁ , L ₂ so that their backrests 26 , 36 can be stacked on the seats 25 , 35 . Seat part 25 on the rear side,
35 Lower surface 25B, movable leg 2 that can be bent to the 35B side
7 and 37 are provided. And the seat part 25,3
On the front side of 5, upper leg parts 29, 39 and lower leg part 30,
40, and fixed legs 28, 38 are provided which can be bent toward the floor 21 at their pivot parts 31, 41. Furthermore, the first rear seat 24 and the second rear seat 3
4, there is a lifting arm 33 whose one end is pivotally attached to the lower leg portion 30 of the fixed leg 28 of the first rear seat 24 via pivots 32, 32, and which can be raised and lowered using the pivoted portion as a pivot point. , 33, and the other ends of the undulating arms 33, 33 are fixed to the lower leg portions 40 of the fixed legs 38 of the second rear seat 34.
Note that this first rear seat 24 and second rear seat 3
4, first fold the first rear seat 24 onto the floor 21 in front, and then fold the second rear seat 34.
is folded. To fold the second rear seat 34, the backrest 36 is tilted forward so that it overlaps the seat 35, and the rear part of the seat 35 is lifted upward, and the rotating legs 3
7 to the lower surface 35B side of the seat portion 35 and fold it.
After that, the seat portion 35 is attached to the pivot 41 of the fixed leg 38,
41 as a rotation fulcrum and is rotated forward and positioned vertically on a pair of undulating arms 33, 33 (see FIG. 6). Next, the rear ends of the hoisting arms 33, 33 are lifted, and the hoisting arms 33, 33 are rotated upward about the pivots 32, 32 at the front ends of the hoisting arms 33, 33 until they are oriented vertically. (See Figure 7), first rear seat 24 folded
By positioning the folded second rear seat 34 above the folded second rear seat 34, the folded first rear seat 24 and second rear seat 34 are returned to the normal seat state by performing the folding operation in the reverse order.

Therefore, in the second rear seat 34 having the above structure, the fixed legs 40 of the second rear seat 34 fixed to the undulating side ends of the undulating arms 33, 33 are attached to the pivots 32, 32 at the other ends of the undulating arms 33, 33. Since the second rear seat 34 is only indirectly fixed to the floor through a portion of the fixed leg, especially when the second rear seat 34 is not used, vibrations of the vehicle may cause a gap between the lower surface of the lower leg of the fixed leg and the upper surface of the floor. This caused rattling noise, which was a problem in terms of vibration and noise.

The purpose of the present invention is to solve the above-mentioned problems in a folding leg section in which a first rear seat and a second rear seat are arranged, and after one seat is folded, the other seat is stacked and folded above it. To provide a leg locking device for a folding leg of a van-type vehicle seat, which is free of vibration and noise and is easy to operate.

The present invention will be explained below with reference to embodiments shown in the drawings. Figures 1 and 4 show an example in which the present invention is applied to a vehicle body type in which luggage is taken in and out of the rear compartment through a door provided at the rear of the vehicle.The legs have a symmetrical structure; Only one side is shown. In this vehicle body type, the seat part 2 of the second rear seat 1 located at the rear of the rear compartment has fixed legs 3, 3 at two positions in the width direction at the front of its lower surface, and at the rear, the lower end part is attached to the floor 9. A foldable movable leg is provided on the lower surface of the seat (see FIGS. 5 and 7). The fixed legs 3, 3 consist of upper leg parts 4, 4 and lower leg parts 5, 5, the upper ends of the upper leg parts 4, 4 are fixed to the lower surface of the seat part 2, and the upper ends of the lower leg parts 5, 5 are fixed at the lower end portions. The parts are rotatably connected to each other by pivots 6,6. Cam members 7, 7 are protruded and fixed in front of the lower end portions of the upper legs 4, 4.

The lower leg parts 5, 5 have an undulating arm 8 in front of the lower end thereof.
The rear end, that is, the undulating side end of 8 is fixed,
The front ends of the undulating arms 8, 8 are attached to the lower leg portions of the fixed legs of the first rear seat in front (or the floor 9 in the vicinity).
It is pivoted to. As shown in FIG. 3, the lower leg parts 5, 5 have lock levers 10, 10 having a protruding part 10a at the upper end and a tongue-like locking part 10b at the lower end.
is pivotally supported by pivots 11, 11, and the lock levers 10, 10 and lower leg portions 5, 5
A tension spring member 1 is provided between the rear walls 5a, 5a.
2 and 12 are strung up. On the floor 9 behind the lower legs 5, 5, locking members 13, 13 are attached to the bolts 1.
4, 14 and washers 15, 15, and is biased by spring members 12, 12 so that the locking portions 10b, 10b of the lock levers 10, 10 engage with the locking members 13, 13. . In the normal seat state with the first rear seat and the second rear seat 1 assembled, as shown in FIG. As a result, the fixed legs 3, 3 are in a locked state with respect to the floor 9. To fold the rear seat, after folding the first rear seat, fold the backrest 16 of the second rear seat 1 forward to overlap it on the seat 2, and then fold the movable legs. While folding the seat to the underside of the seat, rotate the whole body approximately 90 degrees forward about the pivots 6, 6 of the fixed legs 3, 3. In this process, the cam members 7, 7 protruding forward from the lower end portions of the upper legs 4, 4 lock the lock levers 10, 10 of the lower legs 5, 5.
The lock levers 10, 10 rotate clockwise in the figure about the pivot shaft 11 against the tensile force of the spring members 12, 12, and the locking levers 10, 10 rotate clockwise in the figure to lock the locking parts 10b, 10b and the locking members. 13, 13 is automatically released. Thereafter, the entire first rear seat 1 is rotated upward about the pivot located in front of the raising and lowering arms 8, 8, and is stacked on top of the already folded first rear seat to complete the folding. Conversely, to assemble the second rear seat 1, the folding operation can be reversed. That is, the first
The entire second rear seat 1 folded above the rear seat is rotated rearward about the pivot located in front of the raising and lowering arms 8, 8, and is brought into the state shown by the solid line in FIG. Next, the seat part 2 and the back part 16 are attached to the fixed legs 3, 3 together.
The seat 2 is rotated rearward about the pivot shafts 6, 6, and at the same time, the movable legs at the rear of the lower surface of the seat 2 are opened downward to support the seat 2 against the floor 9. In this process, the contact between the cam members 7, 7 and the protrusions 10a, 10a of the lock levers 10, 10 is released, and the lock levers 10, 10 are rotated about the pivot shaft 11 as shown in the figure by the tensile force of the spring members 12, 12. Rotating clockwise, the locking parts 10b, 10b and the locking members 13, 13
When the fixed legs 3, 3 are engaged with each other, the fixed legs 3, 3 are automatically locked to the floor 9.

In the above embodiment, the second rear seat 1 is folded forward, and then the folded second rear seat 1 is folded forward.
This was applied to the leg structure of the seat that rises and falls above the rear seat, but as in the case of a rear engine type, the first rear seat is folded backwards, and then the entire structure is moved above the second rear seat to carry luggage. It goes without saying that the same configuration can be applied to cases where the device is inserted and removed from the side by simply reversing the front and back.

As explained above, the present invention is arranged at predetermined intervals in the front-rear direction of the vehicle floor to allow seating, the backrest is attached to the seat so that it can be stacked on top of the other, and the backrest is attached to the underside of the seat on one side of the seat. A first seat and a second seat are provided with movable legs that can be bent, and on the other side of the seat are provided with fixed legs that are composed of an upper leg section and a lower leg section and that can be bent toward the floor at this pivot point. In the front-rear direction, a lifting arm is provided, one end of which is pivotally connected to the lower end of the fixed leg of one of the seats or a floor area in the vicinity thereof, and which can be raised and lowered using the pivoted part as a rotational fulcrum. In a van-type vehicle seat leg structure in which the other end of the arm is fixed to the lower end of the fixed leg of the other seat, the lower leg of the fixed leg fixed to the undulating side end of the undulating arm has a protruding portion at the upper end. A lock lever having a locking portion at the lower end is swingably supported, and a locking member is fixed on the vehicle floor, so that the locking portion of the lock lever is fixed to the vehicle floor when the seat is assembled in a normal seat state. The fixed leg is biased by a spring member so as to engage with the locking member, and a cam member is protruded from the upper leg of the fixed leg. A leg lock device in which the cam member abuts a protrusion of the lock lever, rotates the lock lever against the biasing force of the spring member, and releases the engagement between the locking portion and the locking member. Therefore, the intended purpose of the present invention is certainly achieved. That is, in the present invention, a lock lever having a protruding part at the upper end and a locking part at the lower end is swingably supported on the lower leg of the fixed leg of the rear seat which is fixed to the undulating side end of the undulating arm. In the normal seat condition with the locking member fixed and the rear seat assembled, the locking part of the lock lever is biased by a spring member in a direction to engage with the locking member on the upper surface of the floor, and the fixed leg The upper leg part is provided with a lock lever that comes into contact with the protruding part of the lock lever during the rotational process of folding, and rotates the lock lever in a direction that releases the engagement between the locking part and the locking member against the biasing force of the spring member. Since the structure has a protruding cam member, the fixed leg of the rear seat fixed to the undulating side end of the undulating arm is automatically locked or unlocked from the floor during a simple assembly or folding operation. be able to. Therefore, when the rear seat is assembled, its legs are always fixed to the floor and no noise is generated between them and the upper surface of the floor.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a side view mainly showing the fixed legs of the rear seat equipped with the locking device of the present invention, and FIG. 3 is a perspective view showing the lock lever, and FIG. 4 is an explanatory view of the operation of the rear seat showing the unlocked state. Figures 5 to 7 show initial examples to which the present invention is applied.
Figure 5 is a side view showing the structure of the first rear seat and second rear seat in a van-type vehicle, and Figure 6 is a side view showing the structure of the first rear seat and second rear seat in a van-type vehicle.
FIG. 7 is an explanatory diagram showing the folding process of the rear seat and the second rear seat. FIG. 7 is an explanatory diagram of the state in which the first rear seat and the second rear seat are folded. 3...Fixed leg, 4...Upper leg, 5...Lower leg,
7... Cam member, 8... Lifting arm, 10... Lock lever, 10a... Projection, 10b... Locking part, 11... Pivot, 12... Spring member.

Claims (1)

[Scope of utility model registration request] The seats are arranged at predetermined intervals in the longitudinal direction of the vehicle floor to allow seating, a backrest is attached to the seat so that they can be stacked on top of each other, and one side of the seat is provided with movable legs that can be bent toward the underside of the seat. The other side of the seat is provided with a fixed leg consisting of an upper leg part and a lower leg part, which can be bent toward the floor at the pivot point. A hoisting arm is provided which is pivotally connected to the lower end of the fixed leg of one seat or a floor part near it, and which can be raised and lowered using the pivoting part as a rotation fulcrum, and the other end of the hoisting arm is fixed to the other seat. In the leg structure of a seat of a van-type vehicle fixed to the lower end of the leg, the lower leg of the fixed leg fixed to the undulating side end of the undulating arm has a protruding part at the upper end and a locking part at the lower end. A lock lever is swingably supported, and a locking member is fixed on the vehicle floor, so that the locking portion of the lock lever engages with the locking member when the seat is assembled in a normal seat state. The fixed leg is biased by a spring member, and a cam member is protruded from the upper leg of the fixed leg, and in the process of bending the upper leg toward the floor, the cam member touches the protrusion of the lock lever. A leg in a folding leg of a van-type vehicle seat, characterized in that the engagement between the locking portion and the locking member is released by rotating the lock lever against the biasing force of the spring member. Part locking device.