JP4761405B2 - Manual 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, etc. during heavy rain or flood, and particularly relates to a waterproof door device that is easy to operate manually.

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.
In particular, in the case of a manual waterproof door device that manually lifts and turns the waterproof door or stores it on the floor due to cost reasons, the waterproof door can be quickly raised and the seal pressure against the building etc. can be increased. What can be secured is required.
In addition, in the case of the manual type, the storage operation of the waterproof door must be safe and easy.

  Patent Document 1 discloses a door standing assist device that combines a torsion coil spring and a gas damper. However, the gas damper is difficult to reduce in size and becomes an obstacle to reducing the height of the device, and also causes an increase in cost.

JP 2006-83595 A

  An object of the present invention is to provide a waterproof door device that is a manual type waterproof door device, which can easily reduce the height and size of the device, and is safe and easy to stand up and store.

  The waterproof door device according to the present invention stores the waterproof door in a horizontal state in a storage portion provided on the floor surface of the doorway, and the waterproof door device closes the doorway when the waterproof door turns and stands up. The waterproof door has a plurality of rotating arms to which a restoring force that pushes up the back side of the waterproof door is added at the tip of the arm, and a difference is provided in the restoring force of the plurality of rotating arms. It is characterized by.

Thus, by providing a plurality of rotating arms that push up the waterproof door in the standing direction and providing a difference in the restoring force of the rotating arms, the following effects are obtained.
When stored, the waterproof door is generally horizontal, and the highest torque is required to push up the door. However, since it is pushed up by multiple pivot arms, each pivot arm can be downsized and the doors are somewhat open. Up to about 45 degrees, for example, about 45 degrees, the push-up force may be smaller than that at the beginning of the turn, so that the number of turning arms that directly act to push up the door can be reduced.
When the rotating arm is urged in the door upright direction with a torsion spring, if all of the rotating arms are restored from the standing state to the stowed state, the door will be stowed by hand. However, in the present invention, as a means for providing a difference in the restoring force of the plurality of rotating arms, the door is rotated in the direction in which the door falls down, and the back side of the door is the tip of the rotating arm. By adjusting the angle of contact with each of the multiple rotating arms, the restoring force increases as the door falls, so the door can be stored while supporting the weight of the door and the repulsive force at the beginning of storage is reduced. Can be suppressed.

The torsion spring may be a torsion coil or a torsion bar, but if a torsion coil is used and a plurality of coils with different coil diameters are arranged in the radial direction, such as double or triple, a combination of smaller torsion coils is sufficient, and the device is compact. And low profile.
Further, the restoring force of the torsion spring is preferably adjustable.

In the present invention, the rotating arm has a link structure of a rotating link to which a restoring force is added and a driven link whose tip is pivotally attached to the back side of the waterproof door. A structure may be adopted in which the waterproof door is driven to rotate in the standing direction, and the waterproof door is pushed up in the standing direction.
In this way, the linear extension state of the pivot link and the driven link can be easily locked, so the waterproof door push-up pivot mechanism and the waterproof door for holding the standing state of the waterproof door to withstand water pressure The upright holding mechanism can be integrated, and downsizing and space saving can be achieved.

  In the present invention, in order to ensure high sealing pressure in the standing state while avoiding interference with the storage side wall when the door is rotated, the rotation fulcrum of the waterproof door is supported by the slide support cam device, and the slide support cam The apparatus may include a slider that supports the rotation fulcrum of the door and a cam that moves the rotation fulcrum in the doorway closing direction.

  In the present invention, the rotary arm that pushes up the back side of the waterproof door that is turned upright is divided into a plurality of arms, and a difference is provided in the restoring force of the plurality of rotating arms. When supporting the back side of the door, it becomes easy to adjust the necessary restoring force according to the movement of the center of gravity of the door, which contributes to lowering the device's height and making it compact, and makes it easy to open and close the door with a simple structure It is.

The inclination figure of the state which the door of the waterproof door apparatus stood is shown. The positional relationship between the standing angle of the door and a plurality of rotating arms is shown. The top view of a rotation arm is shown. The assembly drawing of a rotation arm is shown. The component structural example of a rotation arm is shown. The component inclination figure of a rotation arm is shown. The movement of the slide support cam device and the upright holding device as the door is opened and closed is shown. Operation | movement explanatory drawing of a slide support cam apparatus is shown. Operation | movement explanatory drawing of a slide support cam apparatus is shown. Operation | movement explanatory drawing of a slide support cam apparatus is shown. The operation | movement explanatory drawing of a standing holding apparatus is shown. The state which locked the standing holding | maintenance apparatus is shown. The example of the rotation arm which consists of a link mechanism is shown. The component structural example of a link-type rotation arm is shown. The movement of a link type rotation arm is shown. An example in which a plurality of link type rotating arms are provided is shown. The example of arrangement | positioning of a link type rotation arm is shown. The example of arrangement | positioning of a link type rotation arm 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 portion 12 is formed of a vertical wall 12a, a vertical wall 12b on the door upright side, and left and right side walls 12c, 12d. In a state where the door 11 is stored (normally), as shown in FIG. The door 11 closes the opening of the storage portion 12 so that it can pass therethrough.
Although not shown, the housed state of the door 11 can be locked.

Between the back surface side of the door 11 and the storage part 12, there are a first rotating arm 13 and a second rotating arm 14 for assisting in raising the door 11 by hand and bringing it into an upright state.
Although this embodiment shows an example in which two rotating arms are provided, the number is not limited as long as it is two or more.
When the door 11 stands on the rotating part of the door, the side part of the door is prevented from interfering with the vertical wall of the storage part, and slides to the building side in the standing state to improve the sealing pressure. It has a cam device 30 and has an upright holding device 20 that locks the standing state of the door.

The structure of the rotating arm will be described.
FIG. 3 shows an assembly plan view of the rotating arm and the torsion spring 15 provided on both sides thereof, and FIGS. 4 to 6 show configuration examples of the rotating arm and the torsion spring on one side.
In the present embodiment, the first rotating arm 13 and the second rotating arm 14 have the same structure, and only the restoration position (angle) is changed. Hereinafter, the first rotating arm 13 will be described as an example. (Hereinafter, it will be simply referred to as a pivot arm if necessary).
The rotating arm 13 is an example in which the tip end portion 13a abuts on the back side of the door 11 and is pushed up so that a wheel is attached so that the abutting position can be easily moved according to the standing angle of the door.
The rotation arm 13 has a connecting portion 13b connected to the torsion spring 15 on the base side, and rotates against the restoring force of the torsion spring 15 or the restoring force.
A bearing portion 16b that supports the shaft 16e is erected from a base portion 16a that is fixed to the bottom of the storage portion 12, and the rotating arm 13 is rotatable via the shaft 16e and the torsion spring 15 at the bearing portions 16b on both sides. It is supported.
In this embodiment, a double structure of a large coil spring 15a having a large diameter and a small coil spring 15b having a smaller diameter and disposed inside the large coil spring 15a is employed as the torsion spring 15.
One fixed end 15c, 15d of the coil spring is inserted and fixed in an insertion hole 13c provided on the side surface of the connecting portion 13b of the rotating arm 13, and the other fixed end 15c, 15d is a side insertion hole 16j of the fixed platen 16c. , 16k.
The fixed platen 16c is fastened to the female threaded portion 16i with a bolt 16f inserted through an arc-shaped elongated hole 16d provided in the bearing portion 16b. The bolt 16f is loosened, for example, a rod-shaped jig 40 as shown in FIG. Is inserted into an insertion hole 16g provided in the outer peripheral portion of the fixed plate 16c and can be rotated.
Thereby, the restoring force of the torsion spring can be adjusted.
In this embodiment, as shown in FIGS. 1 and 2, when the door 11 is tilted by about 45 degrees, the first turning arm 13 abuts on the back surface of the door 11 and the second turning arm 14 is the door. 11 is already in contact with the back surface of the door 11 in the standing state, and the urging force is applied in the standing direction of the door.
As described above, when the contact angles of the first rotating arm 13 and the second rotating arm 14 with the back surface of the door 11 are different, the position where the restoring force is generated by the torsion spring 15 is different.
For example, when the door 11 shown in FIG. 2A is unlocked from the state in which the door 11 is stored in the storage unit 12 and starts to rotate, the largest torque is required, and both the first and second rotating arms are required. Push up.
As shown in FIG. 2 (c), when the door rotates in the upright direction to about 45 degrees, the center of gravity of the door moves to the rotating shaft side, and the second rotation even if the restoring force of the first rotating arm 13 is lost. Only the restoring force of the moving arm 14 assists in the standing direction.
On the contrary, when the door 11 is tilted in the storage direction by hand, the door is initially pivoted with assistance so as to be supported by the second rotating arm, and the center of gravity of the door moves outward and becomes heavy. Since it falls down so that it may be supported by two rotation arms, the person who operates can accommodate the door 11 in the accommodating part 12, resisting a small repulsive force.

Next, the slide support cam device 30 will be described.
An upper portion of the rear surface of the door 11 that is slightly above the lower end portion a is fixed to a slide support cam device 30 that is connected to the cam 34 by the connecting portion 11a.
FIG. 10 shows a state in which the front side is removed from the pair of left and right slider support portions 32, and the slide support cam device 30 includes a slider support portion 32 that stands upright from the base portion 31 fixed to the bottom side. And a slide groove portion 32a is formed on the opposing surface of the slider support portion 32, and the slider 33 is movable in the horizontal direction along the slide groove 32a.
The left and right sliders 33 are rotatably connected via cams 34 and pins 33b.
The cam 34 forms a substantially slanted “h” -shaped cam groove 34 a and is connected to the slider support portion 32 via a shaft 35 inserted through the cam groove 34 a.
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, as shown in FIG. 8, the cam groove 34a is formed obliquely downward toward the rotation fulcrum 33b of the door. Along the direction opposite to the entrance blockage.
By this movement, the door end a moves away from the vertical wall 12b of the storage unit, and the vertical wall and the door end a are prevented from interfering with each other.

When the door 11 stands at about 45 degrees or more, as shown in FIGS. 9 and 10, 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. Therefore, while supporting the weight of the door 11 with the slider 33, it moves horizontally along the cam groove 34a to the closing side.
Thus, in the state shown in FIG. 9C where the door 11 is erected, the surface of the door 11 comes into pressure contact with the building-side seal member 1 provided at the entrance.

Next, the upright holding device 20 will be described with reference to FIGS.
The upright holding device 20 prevents the door 11 from unintentionally falling to the storage side.
The back surface of the door 11 has a first link 21 that is axially connected by a shaft portion 21a and a second link 22 that is axially connected by a shaft portion 22a opposite to the door 11 of the first link. The two links 22 are bent so that the shaft portion 22a moves in the opposite direction to the door 11, and the door 11 is stored in the storage portion 12. When the door 11 stands up, the first link 21 and the first link 21 are The two links 22 are deployed, and when the door 11 is in the standing state, the door 11 is linear as shown in FIGS.
At this time, in order to lock the linear state, the lock pin 25 is provided, the lock pin 25 that has been inserted into the temporary placement hole 21c of the first link 21 is removed, and the pin hole 21b of the first link 21 and the second link 21 The lock pin 25 is inserted into the pin hole with the pin hole 22b aligned.
This prevents the first link 21 and the second link 22 from bending unintentionally.
The lock pin 25 is connected to the attachment portion 25b with a string 25a.
Further, the plate 22c protrudes from the upper surface of the first link 21 along the upper surface of the second link 22, and is prevented from being bent to the opposite side.
When the door 11 is stored, when the foot plate 23b of the foot arm 23 is stepped on, the action portion 23c provided at the tip of the foot arm 23 and the second link 22 connected to each other by the shaft connecting portion 23a is below the second link 22. The side is pushed up by this principle, the first link 21 and the second link 22 are rotated in a bending direction, and the door tilts.

In the above-described embodiment, the turning arm for pushing up and turning the door and the standing holding device for holding the standing state of the door so as to withstand water pressure are provided separately.
This embodiment has an advantage that the length of the pivot arm can be easily adjusted with the horizontal movement of the door because the tip of the pivot arm is in contact with the back surface of the door via the roller member. Both installation space and installation space for the upright holding device are required.
Therefore, an embodiment effective for integrating the rotating arm and the upright holding device to save space will be described.

FIG. 13 shows an example of the structure of a link type rotating arm, and FIG.
The shaft 116c is supported by the bearing member 116h and is biased by the coiled torsion spring 15 in the door standing direction.
The rotating bracket 116a is placed along the shaft 116c, the fastening bracket 116b and the rotating bracket 116a are fastened by a bolt 116d, and the rotating bracket 116a is rotated by the rotation of the shaft 116c.
The magnitude of the restoring force by the torsion spring 15 is adjusted by adjusting the rotation position of the shaft 116c when the shaft 116c of the rotation bracket 116a is attached.
There are two attachment holes 116f on the side surface of the rotation bracket 116a, and the rotation link 113 is fixedly connected by a bolt 113d using these attachment holes, and the distal end side of the rotation link 113 is driven through the connection hole 113b. The link is connected by a connection hole 213b of the link 213 and a rotation pin 113a.
The distal end side of the driven link 213 is pivotally attached to a connection hole 11c of a shaft attachment bracket 11b provided on the back surface of the door 11 using an attachment hole 213c and an attachment pin 213a.
As a result, as shown in FIG. 15, the rotation link 113 is rotated by the rotation of the shaft 116 c biased by the spring, and the tip of the driven link 213 pushes up the door 11 and rotates in the standing direction.

The locking hole _{R 1} provided pivot link 113 has a locking hole _{R 2} to the driven link 213 correspondingly.
When the rotation link 113 and the driven link 213 are bent as shown in FIGS. 15B and 15C, the positions of the lock holes R ₁ and R ₂ are shifted, but as shown in FIG. 15A. When the rotation link 113 and the driven link 213 extend in a straight line, the positions of the lock holes R ₁ and R ₂ coincide with each other. In this state, the lock pin 25 is inserted into the lock holes R ₁ and R ₂ to be held upright. The state can be maintained and the door is prevented from falling unintentionally.
Further, in this embodiment, the foot arm 23 is rotatably attached to the shaft 116c as in the previous embodiment, and the foot arm 23 has an action portion 23c facing the foot plate 23b for stepping on with a foot. As shown in FIG. 15A, in the state where the rotation link 113 and the driven link 213 are in a straight line, a protrusion 116g is provided on the door side of the fastening bracket 116b fastened to the rotation bracket 116a. The action part 23c of the foot arm 23 is located at the top.
As a result, when the lock pin 25 is removed and the foot plate 23b is stepped on with the foot, the action portion 23c pushes up the protrusion 116g on the door side of the tightening bracket 116b, and thereby the rotation bracket 116a slightly rotates in the door closing direction. , The link bends at the joint, and after that the door can be closed by hand.

Although one link-type rotary arm has the advantage of reducing the space, FIG. 16 shows an example in which two link-type rotary arms are arranged with the spring biasing force and the mounting position shifted.
The slide support cam device is also attached at a predetermined interval.
In this way, there is a difference in the magnitude of the restoring force of the spring that contributes to pushing up the door, and the restoring force of each link type rotating arm acts from the state where the door is closed in the horizontal direction to the initial standing direction. However, since a large torque is generated and there is a difference in the restoring force of the plurality of link type rotating arms, as the standing angle of the door 11 increases, the restoring force is greatly reduced more than the reduction of the restoring force due to the rotation return of one torsion spring. be able to.
As a result, when the door 11 is closed by hand, the door 11 is rotated with a small force at the initial stage of rotation from the standing state, and the total restoration of the plurality of link-type rotating arms is performed as the door 11 falls and the center of gravity moves toward the door tip side. While supporting with force, the door can be completely closed without generating a large repulsive force as in the prior art.

  FIG. 17 shows an example in which one link type turning arm 113, 213 is arranged for the small door 11, and FIG. 18 (a) shows three link type turning arms (113, 213) for the large door 11. , (114, 214) are shown, and FIG. 18 (b) shows an example in which two link-type rotating arms are provided on both sides by extending the shaft, so that the door device by various combinations is shown. Can be.

DESCRIPTION OF SYMBOLS 10 Waterproof door apparatus 11 Waterproof door 12 Storage part 13 1st rotation arm 14 2nd rotation arm 15 Torsion spring 16 Restoring force adjustment part 20 Standing holding apparatus 30 Slide support cam apparatus 113 Rotation link 213 Follow link

Claims (4)

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 by turning the waterproof door into a standing state,
The waterproof door has a plurality of rotating arms to which a restoring force is added to push up the back side of the waterproof door at the tip of the arm, and a difference is provided in the restoring force of the plurality of rotating arms. Waterproof door device.   2. The waterproof door device according to claim 1, wherein the rotating arm is urged in a standing direction of the waterproof door by a torsion spring. The waterproof door device according to claim 2, wherein a restoring force of the torsion spring is adjustable.   The rotation arm has a link structure of a rotation link to which a restoring force is added and a driven link whose tip is pivotally attached to the back side of the waterproof door, and the driven link is in the standing direction of the rotation link. The waterproof door device according to any one of claims 1 to 3, wherein the waterproof door device is driven to rotate and pushes up the waterproof door in a standing direction.

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