JPH02258466A - Door opening/closing device - 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 [Industrial Application Field] The present invention relates to a door opening/closing device suitable for a door provided on an inclined portion of a vehicle body such as the front part of a vehicle.

[Conventional technology]

The conventional device has a rotary shaft extending in the vertical direction and rotatably supported at the upper and lower ends, as described in Vehicle Technology No. 164, Japan Railway Vehicle Manufacturers Association, October 1983 issue, page 27. , one end is fixed to the rotating shaft,
The other end swings open and close the door to the outside of the vehicle using a closing device consisting of an arm that is rotatably supported by a bottle toward the door. As a result, it operated on a trajectory that moved at right angles to the direction of Earth's gravity.

[Problem that the invention aims to solve]

In the above conventional technology, when the vehicle body shape of the door installation part is inclined upward from the floor surface to the Wi end, the lower end of the rotating shaft provided perpendicular to the floor surface is wide toward the indoor side from the nose lower end position. This protrudes, creating problems in that the indoor living space is narrowed, and the arm that connects the rotating shaft on the lower end side to the door becomes long, resulting in insufficient rigidity in terms of holding the door.

Therefore, in order to solve this problem, if this prior art is applied to a vehicle with an inclined car body shape, with the rotation axis parallel to the inclination of the door, the opening/closing operation of the door will not be parallel to the direction of gravity of the earth. In other words, when the door is opened, a force is required to push the door up until the point where the arm and the thong meet, which follow a circular arc around the axis of rotation, crosses an extended line perpendicular to the door, and once it crosses the line, a force is required to support the door. The opposite is true when the door is closed, and therefore there is a problem with the operability when opening and closing the door.

The purpose of the present invention is to improve the operability when opening and closing the door.
To provide an opening/closing device that balances the opening/closing force of a door at a closing position and an opening position of the door.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a lever near the axis of the rotating shaft that is coupled to the rotating shaft so as to follow the rotation of the rotating shaft, and connects the tip of the lever and the vehicle body with a spring. The rotation of the rotating shaft, that is, the rotation of the door, is linked to the expansion and contraction of the spring.

[For production]

The other end of the lever, which has one end connected to the rotating shaft near the axis of the rotating shaft, follows the rotation of the rotating shaft and rotates in an arc having a radius equal to the length of the lever. The spring that connects the tip of the lever and the vehicle body moves toward the closing direction or opening direction of the door, with the point where the total point of the arm and the door is located on an extended line perpendicular to the door from the center of the rotation axis. Arrange so that the spring reaction force increases. As a result, the inclined distribution valve for opening and closing the door and the spring reaction force are balanced, reducing the force required to open and close the door and preventing collision between the door and the vehicle body.

〔Example〕

An embodiment of the present invention will be described below with reference to Figures 1 to 4.

1 is a vehicle body, and a door 2 is attached to the vehicle body 1 by a door opening/closing device 1. The door opening/closing device 3 includes a rotating shaft 4 installed along the #2 inclination @41, one end fixed to the rotating shaft 4 at the upper and lower parts of the rotating shaft 4, and the other end rotatable to the door 2. The arm 5, 5' is supported by bearings 6, 6', and the bearings 7, 7' rotatably support the rotating shaft 4. In order to prevent the door 2 from swinging in the horizontal plane, the door opening/closing device 13 generally connects the vehicle bodies l and n2 with a link device, but this link device is omitted in the figure. A lever 8 that follows the rotation of the rotating shaft 4 is provided at the lower end of the rotating shaft 4 via a universal hinge 9, and the tip of the lever 8 and the vehicle body 1 are connected by a spring 10.

The operation of the above configuration will be explained. The door 2 swings open from the outside of the vehicle around the rotating shaft 4, but since the door 2 is inclined, the force of the door's own weight corresponding to the inclination always acts toward the indoor side.

The lever 8, which rotates in an arc in conjunction with the opening and closing of J%2, is the third
In order to pull the spring 10 so that the spring reaction force increases from the door half-open position shown in FIG. 1 to the door closing direction shown in FIG. 2 and the door opening direction shown in FIG. Counteract and maintain balance.

According to this embodiment, the balance adjustment work can be easily performed by using a post-adjustment structure that allows the length of the lever to be changed, or by moving the connection point of the spring on the vehicle body side to support the tension length of the spring. It has the effect of Furthermore, by installing mechanisms such as levers and springs under the floor, there is an effect that they do not obstruct the interior living space and viewing area.

〔Effect of the invention〕

According to the present invention, the balance between the tilt distribution valve of the door's own weight and the spring reaction force makes it possible to easily open and close the door even when the vehicle body shape of the door mounting portion is extremely inclined, and the opening/closing device This has the effect of not making the indoor space narrower, and increasing the rigidity of the door.

[Brief explanation of drawings]

! ! ! Figure 1 is a longitudinal section showing an embodiment of the door opening/closing device according to the present invention, and Figure 2 to Figure 4 shows the state of the door opening/closing operation, and both are sectional views taken along line A-A in Figure 1. . 2...door, 3...n opening/closing device, 4...
...Rotation axis, 5.5'...Arm, 8...
...Lever, 10...Spring agent Patent attorney Masaru Ogawa Male---＼＼Figure

Claims (1)

[Claims] 1. In a door opening/closing device that swings a door tilting toward the inside of the vehicle outside the vehicle using a rotating shaft and an arm that extends from the rotating shaft and is rotatably connected to the door, a door that tilts toward the inside of the vehicle body swings open and close to the outside of the vehicle. A door opening/closing device characterized in that a lever is provided that follows and rotates in an arc at a predetermined radius, and a spring that connects the tip of the lever and the vehicle body is arranged so that the spring reaction force increases toward the door opening position and the door closing position. .