JPH0247189Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vehicle folding door opening/closing device for opening and closing a folding door mounted on a microbus or the like.

From the viewpoint of safety, it is preferable for such a folding door for a vehicle to operate slowly at the end of closing and at the beginning of opening, and in order to ensure complete closure, a large force is applied in the closing direction at the end of closing. However, conventional opening/closing devices only pull the door from an oblique direction using a power cylinder or the like, and have not been able to obtain operating characteristics that take into account the above-mentioned aspects of safety and operability.

In view of such drawbacks, the present invention has one end of a second link pivotally connected to the end of a first link whose forward and reverse rotation is controlled, and the other end of the second link is located at the center of a third link whose one end is pivotally supported. one end of the fourth link is pivotally connected to the other end of the third link, and the other end of the fourth link is pivotally connected to the folding door, so that when the door is closed, the first link and the second It is an object of the present invention to solve the above-mentioned drawbacks by providing a folding door opening/closing device for a vehicle, in which a link, a third link, and a fourth link are arranged substantially in a straight line. One embodiment will be described based on the drawings. Reference numeral 1 is a folding door for a vehicle, which is attached to an entrance 2 provided at the rear left side of a microbus, etc., and has two door plates that are rotatably connected. 3,
3' is configured to be folded into two by rotating about the pivot 4 as a fulcrum. Further, a locking mechanism 5 is attached to the upper part of the door plate 3 to prevent the door from opening during opening and closing, and the lock mechanism 5 supports a stopper 7 so as to be able to move in and out on a bracket 6 attached to the upper end of the door plate 3. A spring 8 is interposed to press the stopper 7 in the projecting direction,
A stopper 7 is provided on the frame 9 located above the door plate 3.
A latch fitting 10 into which is inserted is attached, and an operating rod 11 is connected to the stopper 7, and the operating rod 11 is connected to the stopper 7.
The lock state by the stopper 7 is released by the lowering operation of the stopper 7. Nao stopper 7
As shown in FIG. 7, an inclined surface 7a is formed on the front surface, and when the door plates 3, 3' are closed, the inclined surface 7a is pushed by the latch 10, and the stopper 7 is forcibly pushed downward. As a result, the stopper 7 is automatically fitted into the latch 10 and locked.

Reference numeral 12 denotes an opening/closing device for the folding door 1, and mounting brackets 14 and 14' are attached to the side of the driver's seat and the end of the passenger seat on the vehicle floor 13 below the front seat. A torsion bar 16 is rotatably supported via bearings 15 and 15' made of oil-impregnated metal, and the torsion bar 16 is arranged upright at the driver's seat side end so as to be located to the left of the shift lever 17. The lower end of the operating lever 18 is attached to the other end of the torsion bar 16, and the lower end of the lever lever 19 is attached to the other end of the torsion bar 16.
One end of a push-pull wire 21 is connected to the upper end of the push-pull wire 21, which is installed along the edge of the vehicle floor 13 between a mounting bracket 14' and a bracket 20 installed in front of the entrance/exit 2. .

22 is a link device installed on the vehicle floor 13 in front of the entrance 2, and the first link 2 is rotatably supported on the board 23 with the intermediate point 0 as a fulcrum.
The other end of the push-pull wire 21 is connected to one end of the first link 24, and one end of the second link 25 is pivotally connected to the other end of the first link 24 using the pivot point A. The other end of the third link 26 is rotatably supported on the board 23 with one end P as a fulcrum, and is pivoted at the middle part of the third link 26 with B as a pivot point, and the other end of the third link 26 is One end of the fourth link 27 is pivotally connected with D as a pivot point, and the other end of the fourth link 27 is pivoted with D as a pivot point. .

In the link device 22, the first link 24 and the second link 25 are connected to the pivot point A when the door is closed.
is the first link 2 from the line connecting fulcrum 0 and pivot point B
The third link 2 is arranged so as to be located on a substantially straight line with a slight eccentricity toward the counterclockwise rotation direction of the third link 2.
6 and the fourth link 27, so that their pivot point C is located on a substantially straight line slightly eccentric to the clockwise rotation direction of the third link 26 from the line connecting the fulcrum P and the pivot point D. between the first link 24 and the second link 25 and the third link 2 when the door is closed.
A toggle mechanism is constructed between the fourth link 6 and the fourth link 27.

In this embodiment, the first link 24, which is the drive starting point of the link device 22, is configured to be controlled to rotate in forward and reverse directions by a push-pull wire 21 connected to the operating lever 18. The rotation may be directly controlled by a drive source such as the like.

Further, the lock release device 28 is provided with a fixing metal fitting 29 at the bottom of the door plate 3 facing the operating plane of the fourth link 27.
The support plate 3 is attached to the fixing metal fitting 29 through the support plate 3.
A slide bracket 32 is mounted so as to be slidable in the horizontal direction along guides 31 and 31' interposed between 0 and 30', and the slide bracket 32 is formed as a pivot point D with the fourth link 27. Also, one end of a wire rope 38 is hooked to the slide bracket 32, and the other end of the wire rope 33 is connected to the operating rod 11 of the lock mechanism 5 via a stopper 34.
Further, springs 35 and 35' are applied to the slide bracket 32 to press the wire rope 33 in the direction of pushing it out.

Next, the operation of the vehicle folding door opening/closing device according to the present invention will be explained. First, when the operating lever 18 is swung toward you from the door closed state shown in FIG.
is transmitted to the passenger side end through the rotational movement of 6,
Further, this rotational motion pushes out the push-pull wire 21 via the lever 19, is converted into a linear motion, and is transmitted to the link device 22 at the rear.

In the link device 22, the first link 24 rotates counterclockwise around the fulcrum 0 by the push of the push-pull wire 21, and the second link 24 rotates counterclockwise around the fulcrum 0.
5, the third link 26 rotates clockwise about the fulcrum P, and in conjunction with this, the fourth link 27 pulls the door plate 3 in the opening direction via the lock release device 28. Note that the door plates 3 and 3' are locked by the lock mechanism 5, but when the tensile force of the fourth link 27 acts from an oblique direction, the slide bracket 32 of the lock release device 28 first resists the springs 35 and 35'. Since the wire rope 33 is pulled and slid, the wire rope 33 is pulled and the stopper 7 is moved downward via the operating rod 11, so that the lock is released, and after that, the tensile action of the fourth link 27 is applied to the door plate 3. The door plates 3, 3' are folded and opened by the rotation in the opening direction.

Next, in order to close the door plates 3, 3', the operating lever 18 is moved forward, which causes the torsion bar 16, push-pull wire 21, and link device 22 to operate in the opposite direction to when the door is opened. This causes the plates 3, 3' to move in a closing manner.
When the door is closed, the first link 24 and the second link 25, the third link 26 and the fourth link of the link device 22 are connected.
Since the toggle mechanism is constructed by sequentially rotating the links 27 so that they are arranged substantially in a straight line, the closing pressure on the door plates 3, 3' immediately before closing becomes strong, making the operation leading to complete closing smooth. At the same time, the closing speed of the door plates 3, 3' is gradually slowed down.

In short, since the present invention is configured as described above, even if the drive source of the folding door 1 operates at a constant speed, the speed at which the folding door 1 starts to open and finishes closing can be made slow, making it safe. Moreover, at the end of closing, it can exert a strong pressing force in the closing direction, making it possible to ensure the operation that leads to complete closing, and making the operation that leads to complete closing easier, especially when the drive source is manual. Its practical effects are enormous, such as the fact that it can be carried out in various ways.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention.
The figure is a plan view of the vehicle folding door opening/closing device according to the present invention, Figure 2 is a front view of the same as above, Figure 3 is a sectional view taken along line XX in Figure 1, and Figure 4 is a sectional view taken along line Y-Y of same as above. , 5th
The figure is a plan view of the link device, Figure 6 is a diagram showing the locking mechanism and lock release device, and Figure 7 is a diagram showing the Z of Figure 6.
-Z sectional view. 1 folding door, 24 1st link, 25 2nd link, 26 3rd link, 27 4th link.

Claims (1)

[Scope of utility model registration request] One end of the second link is pivotally connected to the end of the first link whose forward and reverse rotation is controlled, the other end of the second link is pivotally connected to the intermediate part of the third link whose one end is pivotally supported; One end of the fourth link is pivotally connected to the other end of the third link, and the other end of the fourth link is pivotally connected to the folding door, so that when the door is closed, the first link and the second
An opening/closing device for a folding door for a vehicle, characterized in that a link, a third link, and a fourth link are arranged so as to be located substantially on a straight line.