JP2000291330A - Drive device to open and close wing door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive device of simple structure to smoothly open and close a wing door. SOLUTION: This drive device to open and close a wing door is provided with a wing door 10 which is attached to a wing body 1 and turns upward to open, a first lift arm 20 wherein one end is mounted so as to be slidable along the lower face of the wing door 10, and the other end is rotatably attached to the wing body 1, a gear drive mechanism 40 having a moving section 45, which horizontally moves by the rotation of a gear bar 42, horizontally attached to the wing body 1 and axially rotatable, and a second lift arm 30 wherein one end is rotatably attached to the first lift arm 20 and the other end is rotatably attached to the moving section 45 of the gear drive mechanism 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing drive device for opening and closing a wing door mounted on a wing body of a truck vehicle.

[0002]

2. Description of the Related Art Truck vehicles equipped with wing doors are:
Since the side of the body can be fully opened, it is excellent in cargo handling for loading and unloading luggage, and is also excellent in cargo safety.

FIG. 4 is a perspective view showing the appearance of a wing body 1 equipped with a wing door 10 generally known in the art.

The wing door 10 is provided on the left and right of the upper part of the wing body 1, and as shown by a dotted line, when opening, rotates upward about the center of the upper part. Rear door 2
Is mounted at the rear of the wing body 1 so as to be openable, and is used when loading / unloading luggage from behind.

FIG. 5 shows a side view of an opening / closing drive device conventionally used when opening the wing door 10. As shown in FIG. The wing door 10 is rotatably mounted at the upper central portion of the wing body 1 by means of a hinge # 3. The end of the hydraulic cylinder 4 is rotatably attached to the wing body 1, and the end of the piston 5 of the hydraulic cylinder 4 is
0 is also rotatably mounted. for that reason,
The wing door 10 is opened and closed by the expansion and contraction of the piston 5 from the hydraulic cylinder 4.

[0006]

However, the conventional wing door 10 has the following problems.

As described above, the wing door 10 can be fully opened on the side surface of the body, and the cargo handling property for loading and unloading cargo is extremely excellent. However, wing door 10
The hydraulic cylinder 4 must be used for opening and closing, and a hydraulic pump and a hydraulic control device for operating the hydraulic cylinder 4 must be used. When the receiving wing door 10 is closed, it is installed in a nearly horizontal state and the opening operation is performed from that state, so that the structure is extremely complicated and the price is high, and there is also a risk that the smooth opening / closing operation may not be performed.

The present invention has been made in view of the above, and an object of the present invention is to provide a wing door opening / closing drive device which has a simple structure and performs a smooth opening / closing operation.

[0009]

SUMMARY OF THE INVENTION Accordingly, a wing door opening / closing drive device according to the present invention includes a wing door provided on a wing body and rotating upward to open, and one end of the wing door when the wing door is opened. A first lift arm slidably mounted along the lower surface and the other end rotatably mounted on the wing body; and a first lift arm horizontally mounted on the wing body and horizontally rotated by an axially rotatable gear rod. A gear drive mechanism having a moving part that moves in a direction, a second lift arm one end of which is rotatably mounted on the first lift arm and the other end rotatably mounted on a moving part of the gear drive mechanism. An opening / closing drive device for a wing door, comprising:

[0010]

Embodiments of the present invention will be described below.

FIG. 1 shows a wing door opening / closing drive device according to the present invention.

In FIG. 1, the same members as those of the conventional apparatus shown in FIGS. 4 and 5 are denoted by the same reference numerals. The same applies to FIGS. 2 and 3 described later.

The wing door opening / closing drive device comprises a wing door 10, a first lift arm 20, a second lift arm 30, and a gear drive mechanism 40.

The wing door 10 is attached to a position on the rear right side of the wing body 1 (the position of the upper cross frame 1a having a partially cutout upper surface) by a hinge # 3, and is turned upward to open.

The first lift arm 20 has one end to which a slide roller 22 is rotatably mounted via a slide pin 22a, and the other end rotatably mounted to the wing body 1 by means of an arm pin 21. When the wing door 10 opens, the slide roller 22 moves through an arrow S in a slide groove 23 provided on the lower surface of the wing door 10.
It is slidably mounted in one direction.

The second lift arm 30 has one end rotatably attached to the first lift arm 20 by an arm pin 31 and the other end rotatably attached to a moving section 45 to be described later via a drive pin 46. .

The traction mechanism 40 mainly includes a drive motor 41, a gear rod 42, and a moving unit 45. The gear bar 42 is mounted on the wing body 1 in the horizontal direction by mounting portions 43 and 44, and is mounted so as to be rotatable in the axial direction. The drive motor 41 can rotate the gear bar 42 via the gears 48a and 48b. Moving part 45
Is attached to the gear rod 42 so that the gear of the gear rod 42 meshes with the gear provided inside the moving part 45,
The gear bar 47 is slidably mounted on a gear guide 47 provided in parallel with the gear bar 42, and is movably mounted in the horizontal direction by the rotation of the gear bar 42. Therefore, the gear rod 42 rotates by the rotation of the drive motor 41, and the moving unit 4
5 is the gear guide 4 without rotating in the circumferential direction of the gear rod 42.
7 and moves along the gear rod 42 in the direction of arrow S2.

FIG. 2 is a sectional view taken along line AA of FIG. The slide roller 22 is rotatably mounted on a slide pin 22a, and is slidably mounted in a slide groove 23 mounted on the lower surface of the wing door 10. The first lift arm 20 is attached to the slide pin 22a.

In the situation where the wing door 10 of FIG. 1 is closed, the slide roller 22 is
3 and the drive motor 41 is not driven to rotate, so the second lift arm 30 has an arrow S2
There is no driving force in the direction, and no turning power is given to the wing door 10.

The drive motor 41 is driven and the gears 48a, 48
When the gear rod 42 rotates through the arrow b, the moving unit 45 moves to the arrow S
While moving in two directions, the second lift arm 30 rotates to apply a turning force in the direction of arrow S3 to the arm pin 31. The first lift arm 20 rotates about the arm pin 21 by the turning force of the arm pin 31 in the direction of arrow S3, and the slide roller 22 moves the slide groove 23 through the arrow S1.
The wing door 10 is opened by sliding in the direction.

FIG. 3 shows the situation when the wing door 10 is open.

In the situation where the wing door 10 of FIG. 3 is open, the moving part 45 is driven in the direction of arrow S2 along the gear rod 42 by the rotational drive of the drive motor 41 (shown in FIG. 1). While the second lift arm 30 rotates, the first lift arm 20 applies a rotating force in the S3 direction to the first lift arm 20 via the arm pin 31 so that the first lift arm 20 is turned on the arm pin 2.
1, the slide roller 22 opens the wing door 10 around the hinge 3 in the direction of arrow R, and slides in the slide groove 23 in the direction of arrow S1. In this state, the drive of the drive motor 41 is stopped to maintain the position shown in FIG. 4, and the wing door 10 stops the drive of the drive motor 41 halfway through the opening of the wing door 10 to maintain an arbitrary opening position. When the wing door 10 can be closed, the original closing position can be set by rotating the drive motor 41 in the reverse rotation direction.

Although the wing door opening / closing drive device in the above embodiment has been described as being mounted on the rear right side of the wing body 1, it can be mounted at other positions as well.

Further, the gear driving mechanism 40 is used.
It can be driven by a hydraulic piston mechanism.

As described above, the wing door opening / closing drive device of the above-described embodiment can be used in a limited space even if the space is restricted by the rear door 2 or the like.
0 can be opened and closed with a simple structure, and the first lift arm 20 and the second lift arm 30
The wing door 10 can be smoothly opened and closed because the wing door 10 is rotated by the rotational movement of the wing door.

Furthermore, the wrist arm can be more reliably driven by the gear drive mechanism 40.

[0027]

The opening / closing drive device for a wing door according to the present invention comprises:
A wing door provided on the wing body and pivoting upward to open; one end slidably mounted along the lower surface of the wing door when the wing door is open, and the other end rotatably mounted on the wing body; First
A lift arm, a gear drive mechanism having a moving part that is horizontally attached to the wing body and moves in the horizontal direction by rotation of a gear rod that is rotatable in the axial direction, and one end rotatable with the first lift arm. And a second lift arm rotatably attached to the moving part of the gear drive mechanism at the other end, so that even if space is restricted by a rear door or the like, the wing door is limited. Can be opened and closed with a simple structure, and the wing door can be opened and closed smoothly.

[Brief description of the drawings]

FIG. 1 shows a wing door opening / closing drive device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 shows a situation when the wing door is open.

FIG. 4 is an external perspective view of a wing body equipped with a conventionally known wing door.

FIG. 5 shows a side view of a conventionally used opening / closing drive device when opening a wing door.

[Explanation of symbols]

 Reference Signs List 1 wing body 3 hinge 4 hydraulic cylinder 5 piston 10 wing door 20 first lift arm 21 arm pin 22 slide roller 22a slide pin 23 slide groove 30 second lift arm 31 arm pin 40 gear drive mechanism 41 drive motor 42 gear rod 45 movement Part 46 drive pin 47 gear guide

Claims (1)

[Claims] 1. A wing door provided on a wing body and rotating upward to open, one end of which is slidably mounted along a lower surface of the wing door when the wing door is open, and the other end of which is connected to the wing body. A first lift arm rotatably mounted, a gear drive mechanism having a moving unit horizontally mounted on the wing body and moving in the horizontal direction by rotation of an axially rotatable gear rod; A second lift arm rotatably attached to the first lift arm and the other end rotatably attached to the moving portion of the gear drive mechanism.