JPS62181931A - Rotating angle limiting device for seat of vehicle - Google Patents

Abstract

PURPOSE:To make getting on and off easy by invariably bringing a swaying arm pivotally fitted to the moving body of a seat into contact with a kicker provided on the vehicle body side and changing the inclination of the swaying arm together with the longitudinal position adjustment of the seat to change the rotating angle of a rotary body. CONSTITUTION:A lower base 12 and an upper rail 7 constitute a moving body which adjusts the position of a seat back and forth against a floor, and an upper base 10 constitutes a rotary body horizontally rotated against the lower base 12. In this constitution, a kicker 17 is provided on a lower rail 8 via a bracket 16, a swaying arm 19 is pivotally fitted to a rotary shaft 14, and an end section 19a is brought into contact with the kicker 17. A lock piece 22a is provided below the upper base 10 via a support bracket 22, and the lock piece 22a is brought into contact with a stopper 24 provided on the swaying arm 19 when the upper base 10 is rotated R. Accordingly, the inclination of the swaying arm 19 is changed and the rotating angle of the rotary body 10 is changed between alpha and beta.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotation angle limiting device for an automobile seat. .

(Prior art) Automobile seats that are equipped with a mechanism that adjusts the position forward and backward to match the body position or posture of the occupant, as well as a rotation mechanism that rotates to a predetermined angle to facilitate getting on and off the vehicle, are Appropriate restrictions are attached.

However, if the rotation angle of the seat is set so that it does not hit any member on the vehicle body side with respect to the longitudinal displacement of the seat, this angle cannot be made large enough to make it difficult to get on and off the seat easily.

Therefore, a mechanism has been proposed in which the rotation angle of the seat changes when the seat is displaced back and forth (for example, see the specification and drawings attached to the application of Utility Model Application No. 60-39030).

(Problems to be Solved by the Invention) Generally, in a four-door automobile, as shown in FIG.
There is a problem in that when the seat 1 rotates R, the hand 2 placed on the side of the seat 1 gets caught between the seat 1 and the center pillar 3. Therefore, to avoid this, the rotation angle θ should be set to 30
' must be set as small as possible.

However, if the rotation angle θ remains constant and small no matter where the seat 1 is located, there is a problem that getting on and off the seat is inconvenient.

On the other hand, female users tend to adjust the seat particularly to the forward position, and since many female users also seek ease of getting on and off the seat, the rotation angle is adjusted to 70° in this forward position.
There is a problem that we want to keep it at around 100 degrees.

(Means for Solving the Problems) The present invention solves the above-mentioned problems. A seat rotation angle limiting device is provided.

In other words, the gist is that the vehicle is equipped with a moving body that displaces the seat back and forth with respect to the vehicle body, and a rotating body that rotates the seat at a predetermined angle, and that the seat is pivotally connected to the moving body like a swinging arm so as to be rotatable. It is biased so that it always comes into contact with a locking wheel provided on the vehicle body side at the end, and when the seat rotates, a locking piece provided on the rotating body is brought into contact with a rock provided on the swinging arm. , the rotation angle of the seat increases as the seat is displaced to the forward position.

(Example) The details of the present invention will be described below with reference to the examples shown in FIGS. 1 to 3.

A slide rail 6, which is a combination of an upper rail 7 and a lower rail 8 (provided symmetrically, but one of them is shown in this drawing), is installed on a vehicle body floor (not shown).

Further, an upper pace 10 is fixed to the lower surface of the seat, a lower pace 12 opposing thereto is fixed to the rear/main rail 7, and both bases 10 and 12 are connected by a rotating shaft 14.

The lower base 12 and sole rail 7 are movable bodies that adjust the position of the seat back and forth with respect to the floor, and the rear/main pace 10 is a rotary body that can be rotated in the horizontal direction relative to the lower pace 12.

Now, the kicker 17 is installed on the bracket 16 fixed to the lower rail 8, and the swing arm 19 is rotatably pivotally attached to the rotating shaft 14, and its end 19a is brought into contact with the kicker 17. A spring is tensioned between the swinging arm 19 and the lower spacer 12 (FIG. 3) to bias the swinging arm 19 so that it rotates in the R direction and constantly contacts the kicker 17.

In addition, support bras on the underside of the upper pace 10)2
2 is fixed, and a locking piece 22a is provided at the end thereof.

Further, the swing arm 19 is provided with a ston/4' arm. And upper pace 10 (therefore the sheet that is fixing this)
When rotating in the R direction, the locking piece 22a engages the stopper 2.
4 so as to limit the rotation angle.

In addition, the floating prevention bracket 5 is fixed to the lower pace 12,
Support bracket 2 is placed below this through a small gap.
Upper pace 1 so that the edge 22b of 2 is located
Make sure that 0 does not rise above lower pace 12 at all times.

With this configuration, if the rotating shaft 14 and the swing arm 19 are placed at the position shown by the solid line in FIG.
At this time, the seat and the upper pace 10 are adjusted forward together with the upper rail 7), and the rotation angle α from the position where the seat is fixed in the front direction F until the locking piece 22a comes into contact with the stopper 24 increases. (Approximately 700).

Also, if the rotating shaft 14 and the swing arm 19 are placed in the position shown by the chain line (at this time, the seat and the upper pace 10 are adjusted rearward together with the upper rail 7).
, the rotation angle β of the sheet becomes smaller (for example, about 30°
degree).

The swing arm 19 is biased by a spring.
Since it is in constant contact with the kicker 17, the rotation angle changes continuously between α and β as the seat is adjusted back and forth.

(Effects of the Invention) The present invention is as described above, in which the swinging arm pivotally connected to the seat moving body is brought into constant contact with the stiffener provided on the vehicle body side, and as the seat is adjusted in the longitudinal position, Since the inclination of the swinging arm with respect to the longitudinal axis of the vehicle body is changed continuously, the rotation angle of the rotating body that brings the locking piece into contact with the stopper changes continuously.

As the seat is moved to the rear position, the rotation angle is reduced, thereby eliminating the problem of a hand placed on the side of the seat being caught between the seat and the center pillar.

Further, when the seat is moved to the front position, the rotation angle becomes large, so that even a four-door car can maintain the same rotation angle (about 70 degrees) as a two-door car, making it easier to get on and off the seat.

Furthermore, since the dedicated parts of this invention are only the swing arm and the swinger, there is an advantage that this mechanism can be incorporated into a two-door automobile whose rotation angle is constant, and it is easy to change the rotation angle.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the mechanism of an embodiment of this invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a perspective view of the components of this embodiment, and Fig. 4 is a rear view. FIG. 3 is a plan view of the general state of the sheet displaced to the position shown in FIG. 6...Slide rail, IO...Atsunoya pace, 12...Lower pace, 14...Rotation axis, 17...
...Kitsuka, 19...Swing arm,
19a... end, 22... support bracket, 22a... locking piece, 271... strut nog, α, β
······rotation angle. Patent applicant: Fuji Heavy Industries, Ltd.

Claims (1)

[Claims] A device comprising a moving body that displaces the seat back and forth with respect to the vehicle body and a rotating body that rotates the seat at a predetermined angle. A locking member provided on the vehicle body side is always urged to be in contact with the seat, and when the seat rotates, a locking piece provided on the rotating body is brought into contact with a stopper provided on the swing arm, and the seat is moved to the forward position. 1. A rotation angle limiting device for an automobile seat, characterized in that the rotation angle increases as the seat is displaced.