JPS6245876A - Open-close auxiliary device of door for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device that applies an auxiliary force to a vehicle door in accordance with the inclination of the vehicle.

[Conventional technology]

There are doors on the sides and rear of the vehicle for people to get in and out of the vehicle and for loading and unloading luggage.

Conventional vehicles have not been provided with such a device for applying auxiliary force to the door.

[Problem that the invention seeks to solve]

Therefore, for example, in the case of a rear door at the rear of a vehicle, when the vehicle is stopped on an uphill slope, the gravity of the rear door acts in the direction of opening the rear door, and the rear door must be opened while being carefully supported.

Furthermore, when the vehicle stops on a downhill slope, the gravity of the rear door acts in the direction of closing the rear door, increasing the force required to open the rear door.

In the case of a door on the side of the vehicle, the gravity of the door acts in the direction of closing the door when going uphill, and in the direction of opening the door when going downhill.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem by generating an auxiliary force that cancels out the force exerted on the door due to the inclination of the vehicle due to the gravity of the door.

[Means for solving problems]

According to the vehicle door opening/closing device according to the present invention, the torsion bar includes a rotating portion that rotates integrally with the vehicle door, a twisted portion connected to the rotating portion at one end, and the other end of the twisted portion. The rotation surface of the rotating part is connected to the rotating part and has an angular part that is inclined with respect to the rotating part at u'). Further, an actuator is provided that changes the position of the angular portion according to the inclination of the vehicle and adjusts the angle between the angular portion and the rotating portion.

[Effect]

Depending on the inclination of the vehicle when the vehicle is stopped, the door and the rotating portion of the torsion bar integral with the door are biased by the gravity of the door in the opening or closing direction of the door. On the other hand, the actuator moves the angular portion of the torsion bar according to the inclination of the vehicle when the vehicle is stopped, and adjusts the angle between the angular portion and the rotating portion.

In this way, moments in opposite rotational directions are applied to both ends of the twisted portion of the torsion bar from the rotating portion and the angular portion, and as the vehicle tilts when the vehicle is stopped, the gravity of the door acts on the door in the opening or closing direction. The acting force of is canceled by the force from the twisted part of the torsion bar.

〔Effect of the invention〕

In this way, even if the vehicle is stopped on a slope, the force in the opposite direction to the movement direction of the door due to the gravity of the door itself is generated as an auxiliary force by the movement of the angular part of the torsion bar by the actuator, and the door is carefully moved. This can prevent situations in which the door opens while being supported or the door does not open gracefully.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

In FIG. 1, the rear door 10 is arranged at the rear of the vehicle,
It is pivotally connected to the vehicle body at one end 12 of the vehicle. The torsion bar 14 is disposed on the end 12 side of the rear door 10 in the vehicle interior, and includes rotating portions 16 at both ends in the vertical direction that extend in the width direction of the rear door 10 and rotate integrally with the rear door lO, and a rotating portion 16 at both ends in the vertical direction. A twisted portion 18 that is continuous with the portion 16 and extends in the vertical direction along the end portion 12 of the rear door 10; and an angular portion 20 that is continuous with this twisted portion and is inclined with respect to the rotating portion 16 in the rotational plane of the rotating portion 16. have. The twisted portion 18 is rotatably supported by the vehicle body via brackets 1-22.

FIG. 2 shows an actuator that adjusts the angle θ formed by the angular portion 20 with respect to the rotating portion 16 in the rotation plane of the rotating portion 16. As shown in FIG. The inclination sensor 24 is a known sensor that changes its resistance value in relation to the inclination of the vehicle in the longitudinal direction.
A pressure is applied to the step motor 26 from a battery 28 at an amount corresponding to the longitudinal inclination of the vehicle. The pinion 30 is connected to the output shaft of the step motor 26 and meshes with the rack 32, the rod 34 moves linearly integrally with the rack 32, and the hole in the bracket 36 has one end of the rod 34 and the vertical part of the angular portion 20. The parts are rotatably fitted.

The operation of the embodiment will be explained.

When the vehicle stops on an uphill slope, the rear door 10 is urged in the opening direction due to its gravity. In contrast, the inclination sensor 24 detects the inclination angle of the uphill slope from the inclination of the vehicle,
The step motor 26 rotates the pinion 30 clockwise in FIG. As a result, the rack 32 moves upward in FIG. 2, the angle θ between the rotating portion 16 and the angle portion 20 increases, and the rear door 10 is biased in the closing direction by the twisted portion 18 of the torsion bar 14. Ru. In this way, the biasing force in the opening direction due to the gravity of the rear door 10 is appropriately canceled by the biasing force from the torsion bar 14, so that the trouble of opening the rear door 10 while carefully supporting it is eliminated.

When the vehicle is stopped on a downhill slope, the rear door 10 is biased in the closing direction due to its gravity. In contrast, the inclination sensor 24 detects the inclination angle of the vehicle from the inclination to the downhill slope, and the step motor 26 rotates the pinion 30 in the counterclockwise direction l\ in FIG. , the angle 0 between the rotating portion 16 and the angular portion 20 decreases, and the rear door 10 is biased in the opening direction by the twisted portion 18 of the torsion bar 14. In this way, the rear door 10 Since the biasing force in the closing direction due to the gravity of the torsion bar 14 is appropriately canceled by the biasing force from the torsion bar 14, it is possible to prevent the rear door 10 from opening and cracking.

Note that the amount of adjustment of the angle θ between the rotating portion 16 and the angle portion 20 by the step motor 26 increases as the inclination angle of the vehicle increases. The biasing force by the 1-1 shock bar 14 also increases, and the biasing force due to the gravity of the rear door 10 is appropriately offset regardless of its magnitude.

Although the opening/closing assisting device for the rear door 10 has been described in the embodiment, the present invention can also be applied to a tailgate pivotally attached to the lower end of the body, and can also be applied to a side door of a vehicle.

In that case, the torsion bar applies biasing force to the door in the direction of opening the door when going uphill, and in the direction of closing the door when going downhill.

The actuator is configured.

Further, in the embodiment, the inclination of the vehicle in the longitudinal direction has been described, but the present invention can also be applied to the inclination of the vehicle in the left-right direction.

For example, if the left side of the vehicle is lower, the left door will be biased in the opening direction due to its weight, so the torsion bar will bias the left door in the closing direction.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment in which the present invention is applied to a rear door of a vehicle, and FIG. 2 is a block diagram of an actuator for adjusting the position of an angular portion of a torsion bar. 10 Rear door 141 - John bar 16 Rotating part 18 Twisting part 20 Angle part 24 Tilt sensor 26 Step motor patent applicant Hino Motors Co., Ltd. Figure 1 Figure 2

Claims (3)

[Claims] (1) The torsion bar includes a rotating part that rotates integrally with the vehicle door, a twisted part connected to the rotating part at one end, and a rotating surface of the rotating part connected to the other end of the twisted part. an angular portion that is inclined with respect to the rotating portion, and an actuator that adjusts the angle between the angular portion and the rotating portion by changing the position of the angular portion according to the inclination of the vehicle. A vehicle door opening/closing auxiliary device characterized in that: (2) The actuator includes a sensor that detects the inclination of the vehicle, a step motor that drives a pinion in relation to the output of the sensor, and a rack that is driven by the pinion and is connected to the angle portion. A vehicle door opening/closing auxiliary device according to claim 1, characterized in that: (3) The vehicle door is a door on the side of the vehicle or a rear door at the rear of the vehicle including a tailgate.
A vehicle door opening/closing auxiliary device according to claim 1 or 2.