JPH03115685A - Opening and closing mechanism for automotive door - Google Patents

Abstract

PURPOSE:To ensure a wide opening part by forming a horizontally rotated rotating arm, a driving mechanism, a horizontal rail fixed to the inner surface of door, and a connecting mechanism for connecting the door in such a manner as to be capable of sliding in the longitudinal direction of a vehicle. CONSTITUTION:When open signal is received, door lock is released, a rotating arm 4 is rotated by a driving mechanism 5 to push a door 8 outward, and a slide step plate 13 is pushed out. An electromagnetic lock mechanism 16 is locked, and a slide cover 11 is opened upward. The door 8 is sent forward by the action of a linear motor 9, and the opening operation of the door 8 is stopped in the full-open position. When close signal is received, the door 8 is returned backward by the action of the linear motor 9, and the closing of the door 8 and the receipt of the step plate 13 are completed. Hence, a wide opening part can be ensured by sliding the door frontward.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to automobiles, particularly one-box type automobiles,
This invention relates to an opening/closing mechanism for a front door provided at the entrance on the opposite side of the driver's seat in a bus or the like.

Prior Art The automobile doors can be roughly divided into two types: one that opens and closes in a butterfly style using one side edge of the entrance as a fulcrum, and the other that slides in the front and back direction.The former is attached using a hinge mechanism. The latter has a structure in which a roller conventionally provided on the door moves along a rail fixed to the body.

C. Problems to be Solved by the Invention The former requires space to open and close the door on the side when the door is opened, so in parking lots, etc., you have to be aware that you might collide with the car next to you, It cannot be expanded 90 degrees so that you can take things in and out. In the latter case, the rails will appear on the body surface and spoil the aesthetics, if there is a door at the rear, it will get in the way, and if the rails are exposed and protrude forward, the object to which the rails should be attached There is no.

2. Means for Solving the Problems The present invention is an opening/closing mechanism for an automobile door that does not expose the rail on the outer surface of the vehicle and can be fully opened to ensure a large opening. A rotating arm that is pivotally attached to the front edge of the vehicle and rotates horizontally, a drive mechanism that applies rotational force to the rotating arm, a door that is sized to match the opening of the entrance/exit, and the door. a horizontal rail fixed to the inner surface of the arm; and a connecting mechanism that connects the horizontal rail and the tip of the arm so that the door can slide in the front-rear direction of the vehicle; The slider part of the linear motor is attached to the horizontal rail, and the horizontal rail is used as the stator of the linear motor.

E) By rotating the operating arm, the door is pushed outward, and then slid forward, thereby widening the doorway.

EXAMPLE An opening/closing mechanism for an automobile door according to the present invention will be explained based on the drawings.

L is a one-box type car, and on the floor opposite to the driver's seat, the footrest that is lowered is part 2,
Steps are shaped like steps when getting on and off. A boarding door 3 opens on the side, and a rotating arm 4.4' which is pivotally attached to the inside of the vehicle at the front edge of the opening and rotates horizontally is mounted on the front edge of the opening part of the boarding door 3. A drive mechanism 5 is provided which applies a rotational force to the rotation arm 4.4'.

The drive mechanism 5 is composed of a motor 5a and a reducer 5b, and a rotation shaft 6.6 is vertically supported at its upper and lower ends by bearings 6a, 6a, etc. in close proximity to the drive mechanism 5, and the output shaft of the reducer 5b. and one rotation shaft 6 are connected by a link 7, and
The base end of the rotating arm 4.4 is fixed to the upper part of each rotating shaft 66, and the rotating arm 44.4' is rotated by the motor 5a.
, 4' are adapted to reciprocate while drawing an arcuate path between the inside and outside of the opening. Reference numeral 8 denotes a door, and stators 9a, 9a of a linear motor 9.9, which is a horizontal rail, are fixed to the inner surface of the door 8, and sliders 9b, 9b of the linear motor 9 are attached to the rotating arm 4.4. The door 8 is attached to the tip of the rotating arm 4.4', and the door 8 is slidable in the front and rear directions with respect to the tip of the rotating arm 4.4'. Further, below the stator 9a, there is an auxiliary rail 1 parallel to the stator 9a.
0 is attached, and the rigidity of the door supporting force is increased by the guide bodies 10a attached to the tips of the rotating arms 4', 4'. Furthermore, a rail cover 11 is provided inside the door 8. The rail cover 11 is composed of a main cover 11a that covers the stator 9a and a sub-cover that covers the auxiliary rail 11.The upper edge of the main cover 11a is fixed to a horizontally supported rotating shaft 12 for driving the cover. The lower edge and the upper edge of the sub-cover 11b are hinged, and the sub-cover 11b is suspended from the lower edge of the main cover 11a.When the cover drive rotating shaft 12 is rotated by the motor 12a, the main cover 11a is It rotates 180 degrees about the cover drive rotating shaft 12 as a fulcrum, and the sub cover 11b follows the lower end of the main cover 11a while hanging down. As a result, when the door is closed, the stator 9a and the auxiliary rail 10 are covered so that they are not exposed, and when the door is opened, they are retracted upward (Fig. 4b).
), the footrest has a slide step plate 13 on the floor of section 2.
is connected to the drive mechanism 5 via a universal joint 14 connected to the lower end of the rotation shaft 6 and a link mechanism 15, and slides outward at the same time as the door 8 protrudes outward, making it wide when getting on and off. The area for the foothold is ensured.

An electromagnetic locking mechanism 16 is provided between the rotating arm 4' and the guide body 10a to maintain the protruding door in that position and prevent it from returning to the half-open state. Furthermore, the door 8 includes a latch mechanism that maintains the closed state of the door, a door lock mechanism that locks the latch mechanism, a receiving section that receives a signal from the key, and electric mechanisms 17a and 17b that operate both mechanisms by receiving the signal. It is also equipped with a light emitting diode lamp on the door surface to notify the operating status. A cable 18 that electrically connects the electronic and electrical equipment built into the door and a microcomputer mounted on the car, which will be described later, is movably attached to a rail 19 placed under the floor. It is supported by a rotatable hook 19a, and is prevented from being damaged by the opening/closing operation of the door due to power transformation.

In the opening/closing mechanism of a car door formed in this way, a receiver built into the door receives a signal transmitted from the key.
According to the program input to the microcomputer, the limit switches attached to each operating section operate while confirming the completion of each operation. First, when a close signal is received, the door lock is released, and then the latch mechanism is released. Then, the rotating arm 4 is rotated by the drive mechanism 5,
At the same time as the door 8 is pushed outward, the slide step plate 13 is pushed out (FIG. 2b). At this point, the electromagnetic locking mechanism 16 engages, and the slide cover 11 opens upward (Fig. 1b). Next, the door 8 is sent forward by the action of the linear motor 9, and the door opens at the fully open position. Stop (C1 in Figure 1 and C in Figure 2). When the closing signal is received, the linear motor 9 moves the door 8 backwards, the electromagnetic locking mechanism 16 is released, and the drive mechanism 5 rotates the arm 4 in the opposite direction. The computer program completes the closing of the door 8 and the storage of the step board 13 (Figs. 1a and 2a), and displays that the door is locked and the light emitting diode is in the locked state. An emergency stop mechanism is built in, and when the door receives a specific signal while the door is opening/closing, the entire drive mechanism stops, and when the door receives the specific signal again, the opening/closing operation resumes.

Further, the step plate 13 and the door 8 are connected to each other so as to be slidable in the longitudinal direction by a sliding connection body 20, and the door 8 is firmly supported by the mutual connection with the arm 4.4' and the step plate 13. to prevent wobbling.

According to the opening/closing mechanism for a car door of the present invention, it can be installed regardless of whether there is a rear door, and the door can be opened even if there is only a small space on the side of the body, and can be fully opened.

In this embodiment, by employing a linear motor, the coupling mechanism between the door and the rotating arm can be achieved by utilizing the configuration of the linear motor, and smooth manual operation can be performed simply by turning off the power to the linear motor. Although it is now possible to
A similar operation can also be achieved by forming a rack on the horizontal rail and attaching a motor with a pinion gear to the end of the rotating arm. Also, although we have explained how the opening/closing operation is sequentially controlled by a microcomputer, it is also possible to control the opening/closing operation manually using a sequence circuit that operates based on the function of a limit switch that is activated by the movement of the arm or door. There is no problem even if it is possible.

Further, the mechanisms of the slide step plate and rail cover are not limited to those in the embodiment, and the slide step plate, rail cover, and other footrests may be omitted. In the future, as a further development of the present invention, we will be able to use a linear mechanism to cause the door to protrude to the side without the rotation of the arm, and when the door is closed, the slide step plate will retract and simultaneously lift up to cover the footrest. , it is expected that the effective floor space inside the car will be expanded by making it flush with the floor. Effects According to the present invention, the door slides forward, making it possible to get on and off in a narrow space, and with a wide opening. In addition, the rails are not exposed on the side of the body, and if a linear motor is used for the door sliding mechanism, smooth manual operation is guaranteed by simply cutting off the power, and the uniqueness of the opening and closing movement is due to the design. It's also worth a look.

[Brief explanation of drawings]

Figures 1a-c are explanatory diagrams showing the drive mechanism of the opening/closing mechanism for an automobile door according to the present invention, Figures 2a-c are explanatory diagrams of the operation of the automobile door and the slide step plate, and Figure 3 is the slide step plate. FIGS. 4a and 4b are explanatory views of the rail cover. 1. Car, 2. Footrest, 3. Entrance/exit, 4.
Rotating arm, 5... Drive mechanism, 5a... Motor, 5b...
・Deceleration mechanism, 6. Rotating shaft 7. Link, 8. Door,
9...Linear motor, 9a...Stator, 9b...Slider, lO...Auxiliary rail, 11...Rail cover, 11
a...Main cover 11b...Sub cover 12...Rotating shaft for cover drive, 12a...Motor, 13...Slide step plate, 14...Universal joint, 15
...Link mechanism 16...Electromagnetic lock mechanism, 17a, 1
7b...Electric mechanism, 18...Cable, 19...Rail, 19a...Hook, 20...Sliding connection body Fig. 4(b)

Claims (1)

[Scope of Claims] 1. A rotating arm that is pivotally mounted inside the vehicle and whose base end is at the front edge of the doorway and rotates horizontally, a drive mechanism that applies rotational force to the rotating arm, and an opening of the doorway. A door having a size that matches the size of the vehicle, a horizontal rail fixed to the inner surface of the door, and a connecting mechanism that connects the horizontal rail and the tip of the arm so that the door can slide in the front-rear direction of the vehicle. Automobile door opening/closing mechanism. 2. A rotating arm whose base end is located at the front edge of the doorway and pivots horizontally inside the vehicle, a drive mechanism that applies rotational force to the rotating arm, and a size that matches the opening of the doorway. An automobile door opening/closing mechanism comprising a door, and a linear motor having a stator fixed horizontally to the inner surface of the door and a slider section attached to the tip of the rotating arm.