JP6177224B2 - Raised waterproof door device - Google Patents

Description

  The present invention relates to a waterproof door device for temporarily closing an entrance / exit so that water does not enter a facility such as a building, an underpass, or a parking lot during heavy rain or flood.

This type of waterproof door device is stored under the floor surface of the entrance / exit and the passage surface such as the road surface at normal times, and when the rain or flood occurs, the waterproof door is erected and the entrance is closed. There is something.
There are two types, an automatic type that automatically operates the waterproof door by a drive source, and a manual type that allows a person to stand and rotate.
In this raising type, the waterproof door has a large force at the stage of standing up to about 45 ° from the horizontal state, and a restoring device such as a spring for pushing up the back side of the waterproof door is attached and the waterproof door is attached. The storage unit is locked against the restoring force, and when the waterproof door is raised, the lock is released and the waterproof door is turned and raised so that the vicinity of the rising side end is lifted. It has been broken.
Therefore, if this restoring force is weak, it is difficult to erect the waterproof door, the manual type requires a large human force when lifting, and the automatic type requires a large output drive source. Become.
Conversely, if this restoring force is too strong, there is a technical problem that the splashing force when the waterproof door is stored in the horizontal direction becomes too large.
The present applicant has previously proposed a technique in which a plurality of rotating arms are provided for the purpose of improving the opening / closing operation of the door, and a difference is provided in the restoring force of the plurality of rotating arms.
On the other hand, the present invention pays attention to the rotation trajectory of the rotation arm and the angle of the contact.

Japanese Patent No. 4761405

  It is an object of the present invention to provide a compact raising-type waterproof door device that facilitates the turning operation of the waterproof door.

The rising type waterproof door device according to the present invention stores the waterproof door in a substantially horizontal state in a storage portion provided below the passage surface of the doorway, and closes the doorway by turning the waterproof door to a standing state. The waterproof door device is a lifting type waterproof door device that is pivotally supported by the support device, a pivot arm that pushes up the back side of the waterproof door, and an elastic restoring device that imparts restoring force to the pivot arm And the tip of the pivot arm moves in the vertical direction along the back surface of the waterproof door, and the back surface of the waterproof door has a guide member that guides the movement of the tip of the pivot arm, The guide member is characterized by an arc-shaped portion protruding in an arc shape toward the rotating arm.
Here, the arc-shaped portion is rotated when the waterproof door is substantially upright from the starting point where the tip of the rotating arm contacts the back surface of the waterproof door when the waterproof door is stored in a substantially horizontal state. It is preferable that the distal end portion of the moving arm has an arc shape between the end points in contact with the back surface of the waterproof door.
In the present invention, the elastic restoring device refers to a restoring force by an elastic means that does not require a drive source, and examples thereof include a torsion bar and a coil spring.
The coil spring includes a compression coil, a tension coil, and the like.

When the flat rear surface of the waterproof door is pushed up at the tip of the pivot arm, the restoring force of the spring, etc., suddenly increases between the horizontal state of the waterproof door and the standing direction of 45 ° as the pivot arm rises. On the other hand, the change in load applied to the standing side end of the waterproof door does not decrease so much, so in the case of the manual type, it is difficult for the person to stand up and rotate.
On the other hand, in the waterproof door device according to the present invention, the guide member that guides the movement trajectory of the distal end portion of the rotating arm has an arc shape, so that the rotating arm corresponds to the protrusion amount of the arc portion. The return angle can be kept small, and the corresponding restoring force is greater than that of the prior art.
Thereby, the burden on the person at the time of the standing and turning operation is reduced, and the splashing force at the time of storage can be reduced.
In the case of the automatic type, the drive device can be made small.

The explanatory view of the movement of the waterproof door concerning the present invention is shown. (A) is a storage state, (b) is a rotation state, (c) is a standing state. The shape of a guide member is shown, (a) is a perspective view, (b) shows the relationship with the front-end | tip part of a rotation arm. The state which excluded the prevention door of the storage part of a waterproof door is shown. The relationship between the standing angle of a rotation arm and a restoring force is shown.

A structural example of the raising type waterproof door device according to the present invention will be described below manually with reference to the drawings.
The present invention is characterized in that the movement trajectory of the rotating arm that pushes up the back surface of the waterproof door is improved by the guide member. In this respect, the other structure of the waterproof door is not limited and is not limited to the present embodiment.
It can also be developed in an automatic manner using a drive source.

As shown in FIG. 1A, the waterproof door device 10 stores the waterproof door 11 in a substantially horizontal state in a storage portion 12 that is normally buried under the passage surface of the entrance / exit.
The waterproof door 11 is supported by the support device 15 so that the lower part of the waterproof door 11 can be rotated.
The rotating arm 14 has a rotating arm 14 for pushing up the back side of the waterproof door 11. The rotating arm 14 is connected to the elastic restoring device 13 at the base side, and a restoring force that pushes up the waterproof door 11 acts on the rotating arm 14. .

FIG. 3 is a plan view showing a state where the waterproof door is removed during storage.
In this embodiment, the torsion coil springs 13a and 13b are connected in series, the base side of the rotating arm 14 is connected to the rotating member 14b connected to one end of the torsion coil spring, and the roller 14a is rotatable at the tip of the rotating arm. It is an attached example.
Further, in this embodiment, the elastic restoring device 13 and the rotating arm 14 are installed at two places on the left and right sides of the waterproof door 11, but the number is set according to the size of the waterproof door.
As shown in FIG. 2, two arc-shaped plates 116 and 216 are attached to the rear surface side of the waterproof door 11 with a gap d.
This prevents the rotating arm 14 from interfering with the guide member 16.

Next, the mounting position of the guide member will be described.
As shown in FIG. 1A, when the waterproof door 11 is housed in a substantially horizontal state, the roller 14a at the tip of the rotating arm 14 is in contact with the starting point 16a of the arc-shaped portion. While standing up and turning, the roller 14a moves toward the base side of the waterproof door 11 along the arc-shaped portion of the guide member 16 as shown in FIG.
In the standing state of the waterproof door 11, as shown in FIG.1 (c), the roller 14a touches the circular arc shape part end point 16b.
In this embodiment, the waterproof door 11 is slightly moved toward the seal member 17 by the cam mechanism 15a at the end of standing.
Such an arc-shaped portion draws a circle whose radius is the linear distance between the starting point 16a and the ending point 16b, and an arc portion whose length corresponding to the linear distance between the starting point 16a and the ending point 16b is a chord. It can be calculated | required as a shape.

The relationship between the standing direction angle of the waterproof door 11 and the restoring force acting on the rotating arm 14 is shown in the graph of FIG.
A is the case where the guide member 16 comprising the arc-shaped portion according to the present invention is attached to the back surface side of the waterproof door, and B is the case where the tip of the rotating arm moves along the flat back surface of the conventional waterproof door It is.
It can be seen that the restoring force of B is suddenly reduced as the waterproof door 11 is started up, whereas the rapid reduction of the restoring force is suppressed particularly in the range of an angle of 10 to 45 ° C.
It can also be seen that B increases the spring-up force during storage when the coil spring is strengthened to increase the restoring force.

DESCRIPTION OF SYMBOLS 10 Waterproof door apparatus 11 Waterproof door 12 Storage part 13 Elastic restoring apparatus 14 Rotating arm 15 Support apparatus 16 Guide member 16a Start point 16b End point

Claims (3)

The waterproof door device is a rising-up type waterproof door device that stores the waterproof door in a substantially horizontal state in a storage portion provided below the passage surface of the entrance and exits and closes the entrance and exit by turning the waterproof door into a standing state,
A waterproof door rotatably supported by the support device, a rotating arm that pushes up the back side of the waterproof door, and an elastic restoring device that applies a restoring force to the rotating arm,
The tip of the pivot arm moves up and down along the back surface of the waterproof door,
The back surface of the waterproof door has a guide member that guides the movement of the tip of the rotating arm,
The guide-type waterproof door device is characterized in that the guide member has an arc-shaped portion protruding in an arc shape toward the rotating arm.   The arcuate portion is a pivot arm when the waterproof door is generally upright from a starting point where the tip of the pivot arm contacts the back surface of the waterproof door when the waterproof door is stored in a substantially horizontal state. 2. The raising-type waterproof door device according to claim 1, wherein a tip end portion of the base has an arc shape between end points in contact with the back surface of the waterproof door.   The raising type waterproof door device according to claim 1, wherein the elastic restoring device is a torsion bar or a coil spring.

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