JPH0348889Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a foldable seat leg device for an automobile seat.

(Prior Art) A car is generally equipped with a seat on the floor of the vehicle interior, but when this seat is not used, the seat cushion is installed in order to effectively utilize the interior space on the floor. It has been proposed that the seat bag is folded on top of the seat to take an upright position and thereby be stored on the floor (for example, Japanese Utility Model Application No. 58-78229).

In addition, in the above configuration, if the legs that support the seat on the floor are provided protruding from the seat,
In some cases, the legs can be stored inside the seat so that the legs do not protrude into the vehicle interior space and unnecessarily narrow the vehicle interior space when the seat is erected and stored.

To explain this configuration with reference to FIG. 5, a seat 32 is provided on a vehicle interior floor 31, and this seat 3
The second seat frame 33 has a bracket 34. A leg 35 is pivotably supported in the vertical direction by this bracket 34, and when the leg 35 is rotated upward, the leg 35 is stored inside the seat 32 (as shown by the two-dot chain line in the figure). .

On the other hand, when the upper leg 35 is rotated downward, a stopper pin 36 that comes into contact with the bracket 34 to prevent further rotation is provided in a protruding manner on the leg 35, and the leg 35 in this downward rotational position holds the seat 32. floor 3
It can be supported on top of 1. Reference numeral 37 denotes a spring, and this spring 37 elastically urges the leg 35 to rotate in either the up or down direction.

(Problems to be Solved by the Invention) By the way, in the case of the above configuration, when the legs 35 are rotated downward, for example, the end of the seat belt 38 for this seat 32 is formed between the bracket 34 and the stopper pin 36. There is a risk that the legs 35 may not be able to rotate sufficiently due to being caught in the space between the legs 35. Therefore, it is necessary to rotate the legs 35 downward while being careful not to cause the above-mentioned pinching, but such work is extremely complicated.

(Purpose of the invention) This invention was made with attention to the above-mentioned circumstances, and was designed to make it easier to rotate the legs downward in order to support the seat on the cabin floor. The purpose is to

(Structure of the device) The feature of this device for achieving the above object is that when one end of a spring is connected to a leg and the leg is moved up and down, the spring reaches its maximum tension during the rotation. The other end of the above spring is connected to the seat frame so that the above spring is rotated, and a circular arc portion approximately concentric with the rotation center of the leg is protruded from the seat frame, and the arc edge of this arc portion is connected to the rotation locus of the stopper member. The point is that it extends to a point where it is separated from the other side with a slight gap.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a vehicle interior floor of an automobile, and a front seat support surface 2 and a rear seat support surface 3 are formed on the floor 1 and separated from each other in the longitudinal direction of the vehicle body. A front seat 5 is supported on the front seat support surface 2, and a rear seat 7 is supported on the rear seat support surface 3 via a support member 6.

Both seats above have seat cushion 8.
and a seat back 9 pivotally supported at the rear end of the seat cushion 8 so as to be rotatable back and forth.
Further, the rear seat 7 can be folded onto the seat cushion 8 by rotating forward, and forms a flat surface together with the seat cushion 8 by rotating backward.

Further, a foot surface 11 for a seated person is formed on the floor 1 at a position in front of the rear seat 7 and one step lower than the rear seat support surface 3.

The support member 6 is composed of a front leg 14 that protrudes from the front of the seat cushion frame 12 of the seat cushion 8, and a rear leg 16 and a cushioning rubber 17 that protrudes from the rear of the seat cushion frame 12. be done. The lower end of the front leg 14 is a foot tread surface 11
The lower end of the rear leg 16 is in contact with the rear seat support surface 3.

Then, with the seat back 9 of the rear seat 7 folded onto the seat cushion 8, if the rear seat 7 is pushed forward about the support shaft 18, the rear seat 7 will be folded over the seat cushion 8 and the seat cushion 8. 9 is in a standing position when folded,
It is stored in the front position of the foot tread surface 11 (as shown by the dashed line in FIG. 1).

The seat cushion frame 12 has a pair of left and right brackets 20 at its rear. Each bracket 20 is made of sheet metal, and its front cross section is an inverted U.
The main body portion 20a bent into a letter shape and the main body portion 2
It is composed of a protruding piece 20b extending from the inner plate that constitutes 0a. Then, each end of the rear leg 16 is inserted into each main body part 20a of the left and right brackets 20 and is pivotally supported by a pivot shaft 21, and the rear leg 16 is rotatable in the vertical direction around the pivot shaft 21. has been done.
Further, the buffer rubber 17 is attached to the protruding piece 20b.

Then, if the rear leg 16 is rotated upward,
This rear leg 16 is housed inside the seat cushion 8 (as shown by the two-dot chain line in each figure).

On the other hand, a stopper pin 22 is provided in a protruding manner on the rear leg 16 to abut against the bracket 20 and prevent further rotation when the rear leg 16 is rotated downward. Then, the rear leg 16 in this downward rotating posture
allows the rear seat 7 to be supported on the floor 1 (indicated by solid lines in the figure). Reference numeral 24 denotes a spring, and this spring 24 elastically urges the rear leg 16 to rotate in either the up or down direction.

That is, one end 24a of the spring 24 is connected to the stopper pin 22 protruding from the rear leg 16, and the other end 24b is connected to a connecting pin 20c protruding from the main body 20a. When the rear leg 16 is moved up and down between the upward rotational posture shown by the two-dot chain line in each figure and the downward rotational posture shown by the solid line, the spring 2
4 is stretched to the maximum (as shown by the dashed line in FIG. 2). Therefore, the rear leg 16 is elastically rotated by the spring 24 in either the up or down direction from the most tensioned position of the spring 24, and a so-called turnover mechanism is employed.

A circular arc portion 26 substantially concentric with the pivot center 25 of the rear leg 16 is integrally molded on the bracket 20. The arc edge 26a of this arc portion 26 has a slight gap 2 with respect to the rotation locus of the stopper pin 22.
It is extended to the point where it is separated by 7.

(Effect of the invention) According to this invention, one end of a spring is connected to a leg, and when the leg is moved up and down, the other end of the spring is seated so that the spring is tensioned to the maximum during the rotation. Because it is connected to the frame,
When the legs are rotated downward to support the seat on the cabin floor, after the springs are fully tensioned, the legs are automatically rotated by the elastic force of the springs, so the legs are rotated downward. This makes it easier to perform the downward rotation operation.

On the other hand, an arcuate part that is approximately concentric with the center of rotation of the legs is protruded from the seat frame, and the arcuate edge of this arcuate part is extended to a point where it separates from the rotational trajectory of the stopper member with a small gap, so that the seat The space between the frame and the rotation locus of the stopper member is closed by the arcuate portion, and foreign objects are prevented from being caught between the two when the legs are moved up and down. Then,
Since the work of rotating the legs can be done without being careful about the above-mentioned pinching, the work becomes easier.

Moreover, there is a slight gap between the arc edge of the arc portion and the rotation locus of the stopper member, and the arc edge and the stopper member do not interfere with each other, so the legs can easily rotate. This also has the advantage that the elastic force of the spring that tries to rotate the legs can be reduced accordingly.

[Brief explanation of drawings]

The figures show an embodiment of this invention; Fig. 1 is an overall side view, Fig. 2 is a partially enlarged view of Fig. 1, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is a front view of Fig. 2. FIG. 5 is a diagram corresponding to FIG. 2 showing a conventional example. 1... Floor, 7... Rear seat, 12... Seat cushion frame (seat frame), 1
6... Rear leg (leg), 20... Bracket, 22
... Stopper pin (stopper member), 24 ... Spring, 24a ... One end, 24b ... Other end, 2
6...Circular arc portion, 26a...Circular edge, 27...Gap.

Claims (1)

[Scope of utility model registration request] A seat support leg is pivotally supported on the seat frame so that it can freely rotate in the vertical direction, and a stopper member is protruded from the leg to abut the seat frame when the leg rotates downward and prevent further rotation. In the folding seat leg device for an automobile seat, the legs in a downwardly rotating position can support the seat on the floor of a vehicle interior, wherein one end of a spring is connected to the leg, and the leg is moved up and down. The other end of the spring is connected to the seat frame so that the spring is pulled to the maximum tension during the rotation, while an arcuate portion substantially concentric with the center of rotation of the leg is provided protruding from the seat frame, A folding seat leg device for an automobile seat, characterized in that the arcuate edge of the arcuate portion extends to a point where it is separated from the rotation locus of the stopper member with a slight gap.