JP6410149B2 - Inundation prevention structure - Google Patents

Description

  The present invention relates to an infiltration prevention structure that is provided at an entrance / exit that is a boundary between the outside and a predetermined area, and prevents water from entering the predetermined area from the outside.

  Conventionally, as a structure that prevents external water from entering the predetermined area such as underground space from the entrance and exit, a waterproof board is provided in a pit formed on the floor of the entrance and exit in a lying position. When there is a risk of water intrusion as in the case of various times, various infiltration prevention structures are known (for example, patents) that block the entrance and exit and prevent water from entering from the entrance and exit by raising this waterproof plate. Reference 1). When configured in this way, the waterproof plate is usually stored in the pit so that it does not obstruct the passage of the entrance / exit, and in the event of an emergency, the waterproof plate is erected to easily prevent flooding. be able to.

  Examples of such a flood prevention structure include a structure in which a waterproof plate is erected by human power or electric power. However, the waterproof board is heavy in order to ensure the strength to prevent flooding, so in the case of human power, it is necessary to erect the waterproof board slowly using, for example, a screw jack. Despite the time, it takes time. In the case of electric power, there is a problem that it cannot be used at the time of a power failure or the like, and it is necessary to always check whether there is a failure.

  In some cases, the waterproof plate is automatically erected by the ingress of water from the outside. For example, the waterproof plate urged by the door closer is locked in a lying posture, and the locking member formed so as to be movable in a direction to release the locking, and the locking member is pushed in the locking releasing direction. In order to release the locking of the waterproof plate by the locking member by the pressing member and the pressing member, water is taken in from outside and stored, and the pressing member is lifted by buoyancy as the water level rises. An inundation preventing structure including a water storage tank that protrudes from the surface has been proposed (Patent Document 2).

JP 2004-92270 A JP 2008-184813 A

  By the way, in order to securely stand the waterproof plate when necessary, it is necessary to urge the waterproof plate in the rising direction with a strong force. Since only the waterproof board is maintained in the lying posture, the load applied to the locking portion is large, and there is a possibility that it may easily cause a failure.

  Also, in order to withstand water pressure from the outside when the waterproof plate is erected or to ensure the water tightness of the waterproof plate, a vertical column is often provided on a predetermined area side of the waterproof plate. When maintaining the board in a lying position, it does not play any role and simply obstructs traffic.

  The present invention can easily close the waterproof plate by simply releasing the restraint of the waterproof plate without using electric power or human power, and can surely prevent the ingress of water from the outside. It is an object of the present invention to provide a flood prevention structure that can be opened and closed with a load smaller than that of a water-proof type waterproof board.

The inundation prevention structure according to claim 1 is provided in an entrance / exit that connects an external space on the ground and an underground staircase, and is provided in an entrance / exit having a floor surface and both side surfaces higher than the ground surface of the external space. An anti-rotation structure that is pivotally fixed to one side surface about an end of the underground staircase, and is housed in a pit provided on the one side surface, and an end on the shaft side A waterproof plate that is pivotable between a closed state in which a portion is fixed to the one side surface and the other end abuts a longitudinal groove provided on the other side surface and seals the entrance / exit between the side surfaces And an urging portion that urges the waterproof plate in a closed state, and a stopper that restrains the waterproof plate in an open state against the urging portion, and the stopper includes the floor Accepts water from outside at a position lower than the surface and higher than the ground surface A water storage unit having a receiving port and having a flange formed on the receiving port, a buoyant body provided in the water storage unit and floating in water received by the water storage unit, and the buoyant body is below In addition, the waterproof plate is restrained in an open state, and a locking portion that releases the restraint when the buoyant body is lifted by water received in the water storage portion is provided .

  According to the inundation preventing structure according to claim 1, the waterproof plate is fixed to one side surface of the doorway so as to be rotatable, and can be opened and closed by turning in the horizontal direction. The urging portion urges the waterproof plate in the closed state, and the stopper restrains the waterproof plate in the open state. Accordingly, when the waterproof plate is released from the state in which the waterproof plate is constrained to the open state, the waterproof plate is urged by the urging unit and turns to be closed. In this way, simply by releasing the restraint of the waterproof plate by the stopper, the waterproof plate can be easily closed and water can be reliably prevented from entering from the outside. Further, since the waterproof board can be opened and closed by turning in the horizontal direction, the waterproof board can be opened and closed with a smaller load than that of the tiltable waterproof board.

According to the inundation preventing structure according to claim 1 , in a state where water is not stored in the water storage part, the buoyancy body is located below, restrains the waterproof plate in the open state, and water flows into the water storage part. Thus, when the buoyant body is lifted, the restraint is released, and the waterproof board is turned and closed, so that it is possible to prevent water from entering from the outside. In this way, the waterproof plate can be closed when water has entered the reservoir from the outside, so if there is a risk of inundation, the waterproof plate must be pivoted to prevent water from entering from the outside. Can be prevented. Moreover, since the waterproof plate itself is not erected by the buoyancy of the buoyancy body, a large buoyancy is not required and the water storage section can be made small.

The perspective view explaining the water immersion prevention structure concerning a first embodiment. The top view and stopper part enlarged view of the infiltration prevention structure which concern on 1st embodiment which show operation | movement of a stopper. The perspective view which abbreviate | omitted the side wall of the near side explaining the water immersion prevention structure which concerns on 1st embodiment of an open state. The perspective view which abbreviate | omitted the side wall of the near side explaining the infiltration prevention structure which concerns on 1st embodiment in the middle of a waterproof board moving from an open state to a closed state. The perspective view which abbreviate | omitted the side wall of the near side explaining the water immersion prevention structure which concerns on 1st embodiment of a closed state. Sectional drawing explaining operation | movement of the stopper part of the water immersion prevention structure which concerns on 2nd embodiment.

[First embodiment]
Next, a first embodiment of the inundation preventing structure 1c of the present invention will be described with reference to FIGS. The inundation prevention structure 1c of this embodiment is provided at the entrance / exit 3 that connects the ground external space and the underground staircase 2. The entrance / exit 3 is not limited to this, and may be, for example, a slope leading to an underground space, an entrance / exit 3 of an escalator, an entrance / exit 3 of a building or a parking lot, etc. The installation location is not limited.

  As shown in FIGS. 1 and 2, the doorway 3 has at least a floor surface 31 and both side surfaces 32 a and 32 b. Although not shown, the entrance / exit 3 may have a ceiling surface. In the entrance / exit 3, the floor 31 is formed slightly higher than the external ground surface GL in order to prevent water from entering from the outside in the case of a slight rain or the like. A very gentle slope 33 is formed so as to connect the external ground surface GL and the floor surface 31. Instead of providing the slope 33, a slight step (not shown) may be provided, or for slight water intrusion, drainage equipment (not shown) of the underground staircase 2 may discharge the sewage. That is, in the case of rain to the extent that there is no risk of normal inundation, the entrance / exit 3 is not blocked, and the slope 33, steps, or drainage facilities prevent flooding of the underground space. On one side surface 32a of the entrance / exit 3, there is provided a pit 34b capable of storing the waterproof plate 4b in parallel with the side surface 32a. A vertical groove 36 extending in the vertical direction is formed on the other side surface 32b.

  As shown in FIG. 1 to FIG. 5, the inundation preventing structure 1 c includes a waterproof plate 4 b that can freely open and close the doorway 3, a biasing portion 6 b that biases the waterproof plate 4 b in a closing direction, and the biasing portion. And a stopper 8c that restrains the waterproof plate 4b in an open state against 6b. The waterproof plate 4b is formed in a rectangular flat plate shape, is rotatably fixed to one side surface 32a of the entrance / exit 3, and has an open state stored in a pit 34b provided on the one side surface 32a, and one end Is fixed to one side surface 32a of the entrance / exit 3, and the other end abuts on a vertical groove 36 provided on the other side surface 32b of the entrance / exit 3, and can be pivoted between a closed state in which the entrance / exit 3 is blocked. It has become.

  As shown in FIGS. 2 and 5, the urging portion 6 b is a leaf spring that urges the waterproof plate 4 b in the closing direction. The urging portion 6b is arranged in a state of being bent between the waterproof plate 4b and the pit 34b provided on one side surface 32a of the entrance 3 when the waterproof plate 4b is in the open state. Then, the waterproof plate 4b leaves the pit 34b due to the restoring force of the urging portion 6b, and one end in the horizontal direction of the waterproof plate 4b is fixed to one side surface 32a of the entrance 3 and the other of the waterproof plate 4b. The tip of the end of the door is placed in a vertical groove 36 provided on the other side surface 32 b of the entrance / exit 3, so that the entrance / exit 3 is closed. The urging portion 6b is not limited to a leaf spring, and may be a coil spring or a fluid damper, and may have any configuration as long as the waterproof plate 4b can be changed from an open state to a closed state. May be.

  As shown in FIG. 2, the stopper 8c includes a latch bolt 81b that protrudes in and out from the periphery of the pit 34b, and an operation handle 82b in which the latch bolt 81b can be inserted and removed. As shown in FIG. 2B, when the waterproof plate 4b is in the open state accommodated in the pit 34b, the latch bolt 81b is inserted into the receiving hole 83b of the waterproof plate 4b to restrain the waterproof plate 4b. Then, as shown in FIG. 2C, when the operation handle 82b is manually operated and the latch bolt 81b is pulled in, the restraint of the waterproof plate 4b is released, so that the waterproof plate 4b is moved by the biasing portion 6b. And as shown in FIG. 5, it turns in a horizontal direction and the waterproof board 4b blocks the entrance / exit 3. As shown in FIG.

  Therefore, the waterproof plate 4b can be closed very simply by manually operating the operation handle 82b, so that it is possible to reliably prevent water from entering from the outside. Moreover, since the waterproof board 4b can be opened and closed by turning in the horizontal direction, the waterproof board 4b can be opened and closed with a smaller load than the upright waterproof board 4b. And since the restraint of the waterproof plate 4b can be released by manually operating the operation handle 82b of the stopper 8c, when the waterproof plate 4b is turned to the closed state, the operator can surely confirm the safety visually. Can do. The release of the restraint of the waterproof plate 4b by the stopper 8c is not limited to manual operation. For example, the restraint may be released electrically or the restraint may be released by other mechanical methods. It may be a thing.

[Second Embodiment]
Next, the inundation preventing structure 1d according to the second embodiment will be described with reference to FIG. Since the infiltration preventing structure 1d according to the second embodiment is the same as the infiltration preventing structure 1c according to the first embodiment except for the stopper 8d, the same reference numerals are given and description thereof is omitted. In the inundation prevention structure 1d according to the second embodiment, the receiving port for receiving water from the outside at a position lower than the floor surface 31 of the entrance / exit 3 on the outer surface of the side wall 36 constituting one side surface 32a of the entrance / exit 3 11b is provided. And the stopper 8d of the inundation preventing structure 1d according to the second embodiment is inserted into the water storage part 84b for storing the water received by the receiving port 11b and the water storage part 84b so as to be movable in the vertical direction. A buoyant body 85b that floats on water and a locking portion 86b that is fixed to the buoyant body 85b and restrains the waterproof plate 4b to an open state are provided.

  A slope 89b is formed in the receiving port 11b so as to be slightly higher than the external ground surface GL and lower than the floor surface 31 of the doorway 3. A recessed portion 87b is formed so as to receive water so as to be surrounded by the inclined surface 89b. And the opening 88b is provided in the side surface of the recessed part 87b, and this opening 88b and the water storage part 84b are connected, and it has comprised so that the water received by the recessed part 87b can be stored in the water storage part 84b. In this way, the slope 89b is formed and the position for receiving water is slightly higher than the ground surface GL, so that it is possible to prevent water from entering the water storage portion 84b in the case of light rain that does not require the entrance 3 to be blocked. In addition, the waterproof plate 4b is prevented from standing up when not necessary. On the other hand, since water is received from a position lower than the floor surface 31 of the entrance / exit 3, it is necessary to enter the water storage part 84b through the entrance 11b and seal the entrance / exit 3 before water enters the entrance / exit 3 When there is, the waterproof board 4b can be surely raised. Moreover, the collar part 12b is formed above the recessed part 87b, and it prevents that the rain which falls from upper direction penetrate | invades into the recessed part 87b directly, and suppresses that the waterproof board 4b stands up when it is unnecessary. Therefore, only when there is a possibility that water may enter the entrance / exit 3 from the outside, it is possible to reliably stand the waterproof plate 4b to block the entrance / exit 3 and prevent water from entering.

  The water reservoir 84b is a cavity formed inside the side wall 36 that is vertically long and can move the buoyancy body 85b in the vertical direction. And the buoyancy body 85b is comprised with the material of the mass which floats at least in water, is accommodated in the water storage part 84b, and moves to an up-down direction according to the water level in the water storage part 84b. Moreover, the latching | locking part 86b is being fixed to the buoyancy body 85b directly or indirectly, and moves up and down according to the buoyancy body 85b. The locking portion 86b can be locked in the locked hole 42 provided in the waterproof board 4b at the lower end in the moving direction, and can restrain the waterproof board 4b in the open state. Further, at the upper end in the moving direction, the locking portion 86b is unlocked from the locked hole 42 provided in the waterproof plate 4b, and the waterproof plate 4b can be turned from the closed state to the open state. It is configured to be able to.

  In normal times when there is no fear of flooding, as shown in FIG. 6A, the buoyancy body 85b is located below the water storage portion 84b, and the locking portion 86b is engaged with the locked hole 42 of the waterproof plate 4b. Since it has stopped, the waterproof board 4b is restrained by the open state in the pit 34b, and the entrance / exit 3 can pass. Then, due to heavy rain or the like, water begins to accumulate on the external ground surface GL, and when it passes over the slope 89b of the receiving port 11b, water enters the concave portion 87b and passes through the opening 88b as shown in FIG. 6B. The water enters the water reservoir 84b. When water is stored in the water storage section 84b, the buoyancy body 85b moves upward by floating on the stored water. And when the buoyancy body 85b floats, the latching | locking part 86b fixed to the buoyancy body 85b will also move upward, and latching with the to-be-latched hole 42 provided in the waterproof board 4b will be cancelled | released. The waterproof plate 4b is swung from the open state to the closed state by the urging portion 6b, and the doorway 3 is sealed.

  As described above, according to the inundation preventing structure 1d of the second embodiment, the waterproof plate 4b can be closed when water has been infiltrated from the outside into the water storage portion 84b. In addition, the waterproof plate 4b can be closed and the entrance / exit 3 can be blocked to prevent water from entering. Moreover, since the waterproof board 4b of this embodiment opens and closes by turning in the horizontal direction, it can be opened and closed with a smaller load than the upright waterproof board 4b.

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  The inundation preventing structures 1c and 1d according to the present invention can be suitably used as a structure for preventing the entrance / exit 3 from entering a predetermined area such as the entrance / exit 3 descending to the underground staircase from the outside.

1c, 1d Infiltration prevention structure 3 Entrance / exit 4b Waterproof plate 6b Energizing portion 8c, 8d Stopper 31 Floor surface 32a One side surface 32b The other side surface 84b Water storage portion 85b Buoyant body 86b Locking portion

Claims (1)

An inundation prevention structure provided at an entrance connecting the ground external space and an underground staircase , and provided at an entrance having a floor surface and both side surfaces higher than the ground surface of the external space ,
An open state in which the end portion on the underground staircase side is pivotally fixed to one side surface and is accommodated in a pit provided on the one side surface, and the end portion on the shaft side is the one side surface And a closed state in which the other end is in contact with a longitudinal groove provided on the other side surface and seals the entrance / exit between the both side surfaces,
An urging portion for urging the waterproof plate in a closed state;
A stopper that restrains the waterproof plate in an open state against the biasing portion ,
The stopper is
A water storage section having a receiving port for receiving water from the outside at a position lower than the floor surface and higher than the ground surface, and having a flange formed on the receiving port;
A buoyancy body provided in the water reservoir and floating in the water received in the water reservoir;
When the buoyant body is below, the waterproof plate is restrained in an open state, and when the buoyant body is lifted by water received in the water storage part, a locking part for releasing the restraint;
An inundation prevention structure comprising:

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