JP4766715B2 - Waterproof door device - Google Patents

Description

  The present invention relates to a waterproof door device that closes an entrance so that rainwater does not enter a building, an underpass, a parking lot, or the like during heavy rain or flood.

There is a high need for installation of waterproof doors that normally store (embed) waterproof doors on the floor of the doorway and stand up and close the doorway during heavy rain or flood.
Considering that the floor of the entrance / exit is buried, the depth of the waterproof door is shallower, that is, it is preferable to reduce the height of the device, and considering the water pressure at the time of waterproofing, etc., the seal with the building etc. in the standing state A higher pressure is desirable.
However, in order to withstand a large water pressure, the waterproof door needs to have a certain thickness. If the door is simply raised with the lower end of the door as a fulcrum, a clearance is required to avoid interference with the storage side wall during rotation. Therefore, sufficient sealing pressure cannot be obtained.
Therefore, for example, Patent Document 1 discloses a technique in which the door rotation fulcrum is horizontally moved to the closing side by a cam mechanism, and the weight of the door is supported by the swing link mechanism.
However, the cam needs a gap for sliding, and the swing link has a wobbling in the rotating direction, and it is difficult to secure the seal pressure while supporting the weight of the door.
In addition, when water pressure is applied in the direction in which the waterproof door is tilted and stored, the door standing mechanism needs to be strong enough to withstand it.
For example, Patent Document 2 discloses a technique in which a first speed reducer and a second speed reducer including a worm and a worm wheel are arranged in a standing drive transmission path of a door, but uses a swing arm. A large torque is required for the force at the time of starting up the door, the device becomes expensive, and it is difficult to reduce the height.
Further, Patent Document 3 discloses a technique in which the rotating arm is in a linear state with respect to the support arm when the door is upright. However, since the cylinder mechanism is incorporated, the device is expensive and has a low profile. After all it is difficult.

JP-A-6-257343 JP 2007-308936 A JP 2005-325621 A

  An object of the present invention is to provide a waterproof door device having a simple structure that is effective in reducing the height of the device and has a high sealing pressure.

The waterproof door device according to the present invention is a waterproof door device that stores a waterproof door in a horizontal state in a storage portion provided on a floor surface of the doorway, and closes the doorway when the waterproof door is in an upright state. The waterproof door pivots from the stored horizontal state to the upright state, and the rotation fulcrum support portion of the waterproof door is opposite to the direction of closing the doorway up to a predetermined standing angle with the upright rotation. A sliding support cam device that moves in a direction and horizontally moves in a direction that closes the entrance when the standing rotation is greater than the predetermined standing angle , and the sliding support cam device has a waterproof door stored in a horizontal state. In this state, the upper side is fixed to the back side of the waterproof door and the closed side is inclined downward, and a cam having a substantially groove-shaped cam groove is rotatably connected to the cam. A slider and the slider And a base portion fixed to the bottom of the storage portion and slidably supported in a horizontal direction along the entrance direction, and a rotatable connecting portion of the cam and the slider serves as a rotation fulcrum support portion of the waterproof door. The shaft inserted through the cam groove is fixed to the base portion .
Here, the storage part of the waterproof door may be provided so as to be buried below the floor so as not to hinder normal passage.

In addition, the rotation link device includes a drive link that rotates from a substantially horizontal state through an upright state toward the closing direction of the doorway, and an interlocking link that is axially connected to the drive link and rotates in a direction opposite to the drive link. And a driven link standing up by the interlocking link, and the driven link is pivotally connected to the interlocking link between the upper and lower ends with the lower end pivotally supported on the bottom and the upper end pivotally supported on the back of the door. In this case, the initial drive torque can be small and the door can be erected and rotated with a simple link structure, so that the apparatus can be easily reduced in height.
In the present invention, when the waterproof door is erected, if the shaft support portions of the upper and lower ends of the interlocking link and the drive shaft of the drive link are arranged in a substantially linear state, a large water pressure is applied to the erected door. Even if it is done, force is hard to work in the direction in which the link rotates, and the water pressure resistance is improved.

In this invention, you may comprise a slide support cam apparatus with the slider which can move the horizontal direction which supports the rotation fulcrum of a door, and the cam which moves a rotation fulcrum in an entrance / exit obstruction | occlusion direction.
In this way, since the slider does not move up and down, the door can be moved horizontally to the closing side by the cam while stably supporting the weight of the door.

  In the waterproof door device according to the present invention, the rotating link device rotates from the horizontal state in which the waterproof door is stored to the upright state, and the slide support cam device supports the rotation fulcrum of the waterproof door along with the upright rotation. Since the part moves horizontally in the direction to close the entrance / exit, the structure is simple and the device can be reduced in height (thinned), and the rotating link device can be moved from a substantially horizontal state to an upright state. It is waterproof if it is composed of a drive link that turns in the direction of closing the entrance and exit, an interlocking link that is axially connected to the drive link and that rotates in the opposite direction of the drive link, and a driven link that stands up by the interlocking link. When the door is upright, the shaft supports at the upper and lower ends of the interlocking link and the drive shaft of the drive link can be arranged in a straight line, even when a large water pressure is applied to the door in the upright state. In the direction that the link rotates It is less likely to work, to improve the resistance to water pressure.

  Further, when the slide support cam device is composed of a horizontally movable slider that supports the rotation fulcrum of the door and a cam that moves the rotation fulcrum in the entrance / exit closing direction, the slider can support the weight of the door. This makes it easy to adjust the horizontal movement of the door using a cam.

The state which raised the waterproof door in the waterproof device which concerns on this invention is shown. The enlarged view of a drive part is shown. (A) shows the rotation link device and the slide support cam device in a state where the waterproof door is housed. (B) shows a state where the waterproof door is slightly lifted. The state which rotated the waterproof door about 45 degree | times is shown. A state where the waterproof door is erected and the entrance is closed. The enlarged view of a slide support cam apparatus is shown. The movement of the slide support cam device when the waterproof door rotates from the horizontal state to about 45 degrees is shown. The movement of the slide support cam device when the waterproof door is rotated from about 45 degrees to the standing state is shown. Indicates the movement of the slider. The example of a component structure of a slider support cam apparatus is shown. The safety device in the case of raising the waterproof door manually is shown.

An example of the overall configuration of a waterproof door device 10 according to the present invention is shown in FIG.
The waterproof device 10 has a substantially box-shaped storage portion 12 embedded in the floor of an entrance / exit of a building or the like, and a waterproof door (hereinafter referred to as a door) that is stored in the storage portion in a horizontal state and closes the entrance / exit when standing. ) 11.
The storage unit 12 is formed by a partition vertical wall 12a that partitions the drive unit, a vertical wall 12b on the door upright side, and left and right side walls 12c and 12d. FIG. Thus, the door 11 closes the opening part of the storage part 12, and the opening part of the drive part is closed by the cover members 19a and 19b so that they can pass over them.
As shown in FIG. 1, the transmission path of the drive motor 13 has a manual handle shaft 18 that can be manually operated in the event of a power failure, a reduction gear 14, a gear box 16 such as a spur gear, and the like. Rotates.
As the drive shaft 17 rotates, the rotation link device 20 moves as shown in FIGS. 3 to 5 and the slide support cam device 30 moves as shown in FIGS.
In this embodiment, an example in which two reduction gears 14 are connected by a synchronous shaft 15 is shown. This is a case where two waterproof doors are arranged in series when the length of the waterproof door is relatively long. Is appropriately set according to the length of the waterproof door.

A structural example of the rotation link device 20 will be described with reference to FIG.
The rotation link device 20 has a drive link 21 that rotates from a substantially horizontal state through an upright state by rotation of the drive shaft 17 toward the closing direction of the doorway, and one end of the rotation link device 20 is connected to the drive link 21 by a shaft 21a. The interlocking link 22 rotates in the direction opposite to the drive link, and the driven link 23 stands up by the interlocking link.
The follower link 23 is bent in a substantially “f” shape in the stored state, and a lower end portion is pivotally supported on a shaft 23 a provided on a bracket 24 fixed to the bottom portion, and extends from the bent portion along the back surface of the door. The upper end portion of the portion is pivotally supported by the reinforcing vertical bar member 11b and the shaft portion 23b provided on the back surface of the door, and is connected to the shaft 22a provided at the other end of the interlocking link 22 in the horizontal portion between the upper and lower ends. is there.
The driven link 23 and the interlocking link 22 are disposed below the driven link while the driven link 23 is bent in a “h” shape in this manner, so that the lower end is pivotally supported on the bottom side of the storage unit. can do.
The door 11 has a reinforcing plate 11a attached to the back surface as necessary.
By adopting such a link structure, as shown in FIG. 3B, at the initial stage of lifting the door, the front end of the door is lifted without interfering with the partition vertical wall 12 a of the storage unit 12.

An upper portion of the rear surface of the door 11 that is slightly higher than the lower end b is fixed to a slide support cam device 30 that is connected to a cam 34.
As shown in FIG. 10, the slide support cam device 30 has a slider support portion 32 erected on the left and right sides from a base portion 31 fixed to the bottom side, and the opposing surface of the slider support portion 32. A slide groove 32a is formed in the slider 33, and the slider 33 is movable in the horizontal direction along the slide groove 32a.
The left and right sliders 33 and 33 are rotatably connected to the pin 33b of the cam 34 through a pin hole 33a, and the cam 34 is in the state in which the door is accommodated in FIG. It is fixed to the mounting portion 11c fixed to the back surface, and forms a substantially oblique “h” -shaped cam groove 34a, and is connected by a connecting hole 35a of the slider support portion 32 via a shaft 35 inserted through the cam groove 34a. It is.
The weight of the door is mainly supported by the slider 33, and the pivot point of the door is a pin 33b.
Thus, until the door stands about 45 degrees, the drive link 21 rotates as shown in FIG. 4, and when the door stands up by the interlocking link 22, the cam groove 34a is opened as shown in FIG. Since the door 11 is formed obliquely downward toward the rotation fulcrum 33b, the door 11 moves along the cam groove 34a in the direction opposite to the closing of the doorway.
By this movement, the door end b moves away from the vertical wall 12b of the storage unit, and the vertical wall and the door end b are prevented from interfering with each other.

When the door 11 stands up to about 45 degrees or more, as shown in FIG. 8, the cam groove 34a is formed obliquely downward so as to be separated from the rotation fulcrum 33b of the door 11, contrary to the above. While the weight of the door 11 is supported by the slider 33, it moves horizontally along the cam groove 34a to the closing side.
Thereby, in the state shown in FIG. 5 where the door 11 is erected, the surface of the door 11 comes into pressure contact with the longitudinal seal member 2 and the lateral seal member 3 on the building 1 side provided at the entrance.
Further, in this state, the shaft support portions 21a, 22a at the upper and lower end portions of the interlocking link 22 and the drive shaft 17 of the drive link are in a substantially linear state, and even if a tilting force is applied to the door 11, the link is rotated in the rotating direction. The power of is difficult to work.

In this embodiment, as shown in FIG. 11, the cover members 19a and 19b are detachably attached so that the drive unit can be inspected, and when the drive motor cannot be operated due to a power failure or the like, the handle 40 is It is connected to the handle shaft 18 and can be manually operated.
In this case, a protective slide switch 41 is provided so that the drive motor does not operate by mistake.
That is, the handle 40 cannot be connected to the handle shaft 18 unless the protective slide switch 41 is moved backward and the power is turned off.

DESCRIPTION OF SYMBOLS 10 Waterproof door apparatus 11 Waterproof door 12 Storage part 13 Drive motor 14 Reduction gear 15 Synchronous shaft 16 Gear box 17 Drive shaft 18 Manual handle shaft 20 Rotation link apparatus 30 Slide support cam apparatus 33 Slider 34 Cam

Claims (3)

A waterproof door device that stores a waterproof door in a substantially horizontal state in a storage portion provided on the floor of the doorway and closes the doorway when the waterproof door is in an upright state,
The waterproof door is a rotating link device that rotates from a stored horizontal state to an upright state, and the direction opposite to the direction in which the rotation fulcrum support portion of the waterproof door closes the doorway to a predetermined upright angle with the upright rotation And a slide support cam device that horizontally moves in a direction to close the doorway when it is turned upright beyond the predetermined standing angle. The slide support cam device has a waterproof door stored in a horizontal state. A cam having a substantially groove-shaped cam groove formed so that the upper side portion is fixed to the back side of the waterproof door and the closed side is inclined downward in the state;
A slider rotatably connected to the cam;
The slider has a base portion slidably supported in the horizontal direction along the entrance / exit direction, and has a base portion fixed to the bottom portion of the storage portion, and the pivotable connecting portion between the cam and the slider is a pivotal fulcrum of the waterproof door. A waterproof door device, wherein a shaft that is a support portion and is inserted into the cam groove is fixed to the base portion . The rotation link device includes a drive link that rotates from a substantially horizontal state through an upright state toward a closing direction of the entrance, an interlocking link that is axially connected to the drive link and rotates in a direction opposite to the drive link. The driven link is erected by the interlocking link, and the driven link has a lower end pivotally supported on the bottom and an upper end pivotally supported on the rear surface of the door and is axially connected to the interlocking link between the upper and lower ends. The waterproof door device according to claim 1. In a state where the waterproof door is standing, waterproof door apparatus according to claim 2, wherein the shaft support of the upper and lower ends of the interlocking links and the drive shaft of the drive link is substantially characterized in that in a linear state.

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