JP3447693B2 - Driving device for vertical door - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving apparatus for a door mounted so as to open and close vertically in a fixed frame such as a building, a container, or an equipment storage box. It is about. 2. Description of the Related Art In a normal door mounted so as to open and close about a vertical axis with respect to a fixed frame, a driving device uses a damper such as a gas damper as an assisting or buffering means when the door is opened and closed. Incorporation of the means is done as needed. However, in a door of a type mounted so as to be able to slide up and down with respect to the fixed frame body, it is necessary to secure a large installation space and a working space for the damper means, which is a factor which hinders the incorporation of the damper means. It has become. [0003] Accordingly, an object of the present invention is to use a small-sized damper with a small stroke as a damper means, and to greatly increase the installation space and operating space of the damper means on the fixed frame side. It is an object of the present invention to provide a vertically movable door drive device that can be reduced. [0004] In the driving device of the present invention, the door 20 that moves up and down along the vertical guide rails 5a and 5b provided on the fixed frame 1 is in a closed state at a lower position, and is closed. The cylinder bodies 23a, 23b or the output shafts 24a, 24b of the damper means 22a, 22b
7a and 37b pivotally attached to the door 20, a pair of levers 25a and 25b are pivotally attached to the door 20 by pivots 28a and 28b, and the levers 25a and 25b are pivoted to the pivot 2
Short pieces 26 having a large difference in length with respect to 8a and 28b
a, 26b and long pieces 27a, 27b,
The tips of the short pieces 26a, 26b are in contact with the pressure receiving rollers 33a, 33b mounted on the door 20, and the damper means 2
The output shafts 24a, 24b of 2a, 22b or the cylinder bodies 23a, 23b are pivotally connected to the intermediate portions of the short pieces 26a, 26b by pivots 38a, 38b, and the long pieces 27
Rollers 29a, 29b are pivotally attached to the distal ends of a, 27b by pivots 39a, 39b. The fixed frame 1 is provided with horizontal guide rails 3a, 3b.
a, 29b are rollably fitted to the horizontal guide rails 3a, 3b. [0005] In the illustrated embodiment, the fixed frame 1
A pair of right and left vertical guide rails 5a and 5b made of a C-shaped channel material are fixed to the left and right edges of the door 20 via a bearing bracket 43 along the vertical frame of the opening. The horizontal roller 36 is mounted by the shaft 42, and the horizontal shaft 4 in the left-right direction is
4, the horizontal roller 35 is mounted.
5 and 36 are rollably fitted to the vertical guide rails 5a and 5b. At the lower end of the door 20, lock bolts 30, 30 which are slid horizontally in the left and right directions are mounted as lock means, and the lock bolts 30, 30 are attached to the striker 4 fixed in the vertical guide rails 5a, 5b. The engagement locks the door 20 in the lower closed position. A pair of left and right lock bolts 30, 30 are connected to a lock handle device 31 at the center of the lower end of the door 20 by connecting rods 32, 32. Operation handle of the lock handle device 31 (not shown)
Is rotated from the front side of the door 20, the pair of lock bolts 30, 30 are simultaneously disengaged from the strikers 4, 4, and the constraint of the door 20 on the fixed frame 1 is released. A pair of left and right horizontal guide rails 3a and 3b made of a C-shaped channel material are fixed to an upper portion of the opening of the fixed frame body. At the lower end of the door 20, a damper means 22 is provided.
The output shafts 24a and 24b of the a and 22b are connected to the pivots 37a and 37, respectively.
b. The dampers 22a, 22b are provided with output shafts 24a, 2b by regulating the amount of gas or oil passing through orifices in the cylinder bodies 23a, 23b.
In addition to a simple buffer type in which the movement of the output shaft 4b is moderated, a spring assist type in which the output shafts 24a and 24b are biased in a forward or backward direction by a built-in compression coil spring is also included. In the illustrated embodiment, a known gas damper is used. A lever 2 is provided at the base end of the cylinder bodies 23a, 23b of the damper means 22a, 22b arranged downward.
The intermediate portion between the short pieces 26a, 26b of 5a, 25b is a pivot 38
a, 38b. Lever 25a, 2
The pivots 28a and 28b serving as fulcrums of 5b are fixed to the door 20 via bearing brackets 40. Lever 25a,
Rollers 29a, 2 are attached to the tips of the long pieces 27a, 27b of the 25b.
The pivots 39a and 39b of 9b are fixed. [0008] The pressure receiving roller 3 is moved from the pivots 28a and 28b.
The dimension L2 of the long pieces 27a, 27b from the pivots 28a, 28b to the pivots 39a, 39b is much longer than the dimension L1 of the short pieces 26a, 26b up to 3a, 33b. In the embodiment shown, L1 and L2 are used. Is about 1: 4. Therefore, the output shaft 2 of the damper means 22a, 22b
The door 20 shows a moving amount several times that of the moving amounts of the levers 4a and 24b, and the levers 25a and 25b reciprocate in a range of 90 to 120 degrees around a horizontal posture. As the damper means 22a, 22b, a gas damper with a built-in air spring or compression coil spring that exerts a repulsive force in the direction of elongation when its length is most compressed is preferable. The operation of the present invention will be described together with the operation of the embodiment. When the door 20 descends in the closing direction, the tip of the lock bolt 30 contacts the inclined surface 4a of the striker 4. When the door 20 is further lowered, the lock bolt 30 slightly retreats and gets over the inclined surface 4a. When the door 20 is fully closed, the lock bolt 30 moves forward and engages with the horizontal surface 4a of the striker 4, and automatically locks the door 20 with respect to the fixed frame 1. In this door closed position, the roller 29
a, 29b are outer ends of the horizontal guide rails 3a, 3b;
That is, the levers 25a, 25b reach the ends closer to the vertical guide rails 5a, 5b, and the levers 25a, 25b
a, 27b are turned so that they are on the upper side, and the repulsive force of the damper means 22a, 22b is
The levers 25a and 256b act in directions in which the levers 25a and 256b are flipped up and rotated with the support points a and 33b as support points. When the operation handle of the lock handle device 31 is turned to remove the lock bolt 30 from the striker 5, the repulsive force of the damper means 22a, 22b causes the lever 25a,
25b is rotated about pivots 28a and 28b, and drives the door 20 up to the upper open position. At this time, the rollers 29a and 29b are connected to the horizontal guide rails 5a and 5b.
Rolls inside b toward the inner end. In the illustrated embodiment, the damper means 22a, 22
According to b, there is resistance when the door 20 is lowered, and it is assisted when the door 20 is raised. On the contrary, when the door 20 is lowered, it is assisted when the door 20 is lowered.
Can be made to have resistance when rising. In this case, as shown in FIG. 4, the striker 4 that engages with the lock bolt 30 is fixed to the middle or upper end of the vertical guide rails 5a and 5b by turning over the top and bottom, and the door once opened. 20 may not return to the closed position. As described above, in the driving device of the present invention,
The door 20 that moves up and down along the vertical guide rails 5a and 5b provided on the fixed frame 1 has a pair of damper means 22a,
22b cylinder body 23a, 23b or output shaft 2
4a and 24b are pivotally attached to the door 20, and a pair of levers 25
a, 25b are pivotally attached to the door 20, and levers 25a, 25b
Are composed of short pieces 26a, 26b and long pieces 27a, 27b having a large difference in length with respect to the pivots 28a, 28b,
The tips of the short pieces 26a, 26b abut against the pressure receiving rollers 33a, 33b mounted on the door 20, and the damper means 22a,
22b output shaft 24a, 24b or cylinder body 2
3a and 23b are pivotally attached to the intermediate portions of the short pieces 26a and 26b, and rollers 29a and 2
9b, the rollers 29a, 29b are fitted on the horizontal guide rails 3a, 3b provided on the fixed frame 1, so that the output shafts 24a, 24b of the damper means 22a, 22b.
The movement of b is multiplied and transmitted to the door 20,
The door 20 can be largely opened and closed by the small stroke damper means 22a and 22b. As described above, since the damper means can be downsized and have a small stroke, the installation space and the operating space of the damper means on the fixed frame side can be greatly reduced, and as a result, the driving device incorporating the damper means can be used. The range of application can be widened. When a repulsion type utilizing a spring is used as the damper means, if the repulsion force is larger than the weight of the door, the door can be automatically raised by releasing the locking means of the door. Even when the force is smaller than the weight of the door, the force for raising the door is reduced by that much, and the door can be raised lightly. Also, when a shock-absorbing damper device is used, the damper device does not cause any resistance when the door is raised, while the damper device becomes a resistance when the door is lowered, and the door is driven gently.
There is no danger of injury or breakage because the limbs and luggage are not caught in the door, and if they are caught, they are not shocking.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a driving device for a vertically movable door according to an embodiment of the present invention. FIG. 2 is a vertical sectional view showing a positional relationship between a horizontal guide rail, a lever, and a damper means in the driving device of FIG. FIG. 3 is a side view of a horizontal guide rail and a lever portion in the drive device of FIG. FIG. 4 is a vertical sectional view showing a positional relationship between a vertical guide rail and a lock unit in the drive device of FIG. 1, in which a door is in a lower closed position. FIG. 5 is a horizontal sectional view showing a positional relationship between a vertical guide rail and a door guide roller in the drive device of FIG. 1; FIG. 6 is a horizontal sectional view showing a positional relationship between a vertical guide rail and another guide roller of a door in the drive device of FIG. 1; DESCRIPTION OF SYMBOLS 1 Fixed frame 3a Vertical guide rail 3b Vertical guide rail 4 Striker 5a Vertical guide rail 5b Vertical guide rail 20 Door 22a Damper means 22b Damper means 23a Cylinder body 23b of damper means Cylinder body 24a of damper means Damper means Output shaft 24b Output shaft 25a of damper means Lever 25b Lever 26a Short piece 26b Short piece 27a Long piece 27b Long piece 29a Roller 29b Roller 33a Pressure receiving roller 33b Pressure receiving roller

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Claims (1)

(57) [Claims 1] Vertical guide rail 5 provided on fixed frame 1
The door 20 that moves up and down along the a and 5b is in a closed state at a lower position, and the cylinder bodies 23a and 23b or the output shafts 24a and 24 of the pair of damper means 22a and 22b.
b is pivotally attached to the door 20 by pivots 37a and 37b, and a pair of levers 25a and 25b are pivoted to pivots 28a and 28b.
Pivoted to the door 20 by levers 25a, 25
b is composed of short pieces 26a and 26b and long pieces 27a and 27b having a large difference in length with respect to the pivots 28a and 28b, and the distal ends of the short pieces 26a and 26b are connected to pressure receiving rollers 33a and 33b mounted on the door 20. The output shafts 24a, 24b of the damper means 22a, 22b or the cylinder bodies 23a, 23b are pivotally connected to the intermediate portions of the short pieces 26a, 26b by the pivots 38a, 38b, and the tips of the long pieces 27a, 27b. Rollers 29a and 29b are pivotally mounted on the shafts 39a and 39b, and the horizontal guide rails 3a and 3b are provided on the fixed frame 1 so that the rollers 29a and 29b can roll on the horizontal guide rails 3a and 3b. Driving device for the vertically moving door fitted.