JP7360164B2 - watertight door unit - Google Patents

Description

The present invention relates to a watertight door unit, and particularly to a watertight door unit that can be suitably installed in an area that prevents water from entering inside a building.

For example, Patent Document 1 states, ``A device is installed to be openable and closable at an opening in a frame of an area that prevents water from entering the building, and includes an opening/closing handle and a device that moves in conjunction with the rotation of the opening/closing handle. a cannula, the cannula moves by rotating the handle in a closing direction and is fixed by being held in the frame, and when the opening of the frame is closed, a seal ring is provided on the frame. In a watertight door that secures watertightness by pressing the seal ring against the door frame, the seal ring function deteriorates on the side surface of the watertight door end where water head pressure is applied in the opposite direction to the direction in which the seal ring is pressed against the door frame. A prevention metal fitting is installed, and a metal receiving frame that engages with the seal ring function deterioration prevention metal fitting is provided on the surface of the door frame facing the seal ring function deterioration prevention metal fitting, and the seal ring function deterioration prevention metal fitting is provided with: Its tip is formed in an L-shape, and when water head pressure is applied in the opposite direction to the direction in which the seal ring is pressed against the door frame, the L-shaped tip of the seal ring function deterioration prevention fitting is applied. It is stated that the metal fitting receiving frame is engaged with the metal fitting receiving frame.

According to the structure of Patent Document 1, ``not only can watertightness be ensured even when water head pressure is applied in the opposite direction to the specified direction, but it can also be opened and closed easily without sacrificing the convenience of the door, and It is effective for this type of watertight door because it can add watertightness that can withstand water head pressure from both the specified direction and the opposite direction without making any major modifications to the door. It is stated that.

For example, Patent Document 2 describes a "handle device that is hinged to a door frame provided in an opening formed in a partition wall and that is provided on a sealed door that opens and closes the opening, the handle device being provided on a hinged side of the sealed door. On the opposite side, there is a handle shaft that is rotatably provided through the sealed door, a main handle body attached to one end of the handle shaft on the front side of the sealed door, and a handle shaft on the back side of the sealed door. and a sub-handle body attached to the end thereof, and a base of the sub-handle body or the base of the main handle body has a handle that abuts against the door frame and locks the sealing door when the opening is closed by the sealing door. A first locking pawl is provided to protrude perpendicularly to the handle shaft, and a second locking pawl that faces in the opposite direction to the first locking pawl is protruded from the base.''

Patent No. 5706356 Utility Model Publication No. 61-150969

Although it can be seen in Patent Document 1 that an L-shaped door frame is provided at the vertical corner of the inner opening end of a concrete wall, in what form is the door frame attached to the wall? It is unclear whether it is fixed. For this reason, from the above-mentioned Patent Document 1, we can get a glimpse of the technical idea of making it possible to attach the door frame to the wall with sufficient strength while having a configuration that can be constructed relatively easily. I can't.

Incidentally, regarding the form of fixing the door frame to the concrete wall in Patent Document 1, it is generally considered to use anchor bolts. In that case, since reinforcing bars are generally embedded in the internal space of the concrete wall, it is necessary to avoid the reinforcing bars when driving the anchor bolts, etc., during the installation work of the door frame. There are concerns that this will become complicated.

In Patent Document 2, the door frame and the locking plate are bolted to the opening periphery of the partition wall, but the shapes of the door frame and the locking plate are complicated, and the combination thereof is also complicated. There is a concern that the work of assembling them to the partition wall will become complicated.

In view of these circumstances, an object of the present invention is to provide a watertight door unit with a structure that is relatively easy to construct, yet allows a door mounting element to be attached to a wall portion with sufficient strength.

The present invention is a watertight door unit that is attached to a through hole in a solid wall so as to be openable and closable, wherein a cylinder is inserted into the through hole so as to create an opposing gap between it and the inner peripheral surface of the through hole. a mounting bracket having a flange at one opening that abuts an outer circumferential portion of one opening of the through hole on the outer surface of the wall portion; a fixing ring that is fitted onto the outside and abuts the inner surface of the wall; a door that is hinged to the collar to enable opening and closing of one opening of the through hole; and a door that is provided on the inner surface of the door. a sealing device that seals between the opposing gap and the outer surface of the tsuba, the opposing gap is filled with a water-stopping material, and the outer periphery of the tsuba is provided with a seal between the outer periphery of the tsuba and the wall portion. A caulking material is provided on the outer periphery of the fixed ring so as to close the abutting part with the outer surface of the wall, and caulking is provided on the outer periphery of the fixing ring so as to cover the abutting part between the outer periphery of the fixing ring and the inner surface of the wall. The inner circumferential edge of the fixing ring is joined to the outer circumferential surface of the cylindrical portion of the mounting bracket.

According to this configuration, in order to attach the door to the wall portion in an openable and closable manner, the collar of the mounting bracket and the fixing ring sandwich the wall portion from the thickness direction, and the inner peripheral edge of the fixing ring is joined to the outer circumferential surface of the mounting bracket, thereby fixing the mounting bracket and the fixing ring to the wall portion.

As a result, although the mounting bracket and the fixing ring have a simple shape and can be constructed relatively easily as a whole, the mounting bracket and the fixing ring can be attached to the wall with sufficient strength. It becomes possible to install it.

In the watertight door unit, the sealing device includes a holder made of an annular plate fixed to the inner surface of the door and facing the collar, and two annular plates provided on the inner surface of the holder spaced apart from each other in the radial direction. and seal rings respectively mounted in the grooves, and the two seal rings may have a lip that is pressed against the outer surface of the collar when the door is in the closed state.

According to this configuration, the sealing performance is improved as much as possible by making the sealing device have a so-called double seal structure, and since the sealing device is configured to use the seal ring as described above, the seal ring is periodically removed. This makes replacement easier and is advantageous in reducing running costs.

Further, in the watertight door unit, the two seal rings are arranged such that the tips of their lips face each other, and the holder has a pressurizing hole that opens between the opposing lips, and A configuration may be adopted in which the air vent holes are provided at a distance.

According to this configuration, by applying pressure from the pressurizing hole at a specified pressure for a certain period of time while the door is closed, it becomes possible to perform a leakage test of the two seal rings relatively easily.

Further, in the watertight door unit, the sealing device includes an inner diameter side ring portion fixed to the inner surface of the door, extending toward the collar side, and arranged parallel to each other and spaced apart from each other in the radial direction. A one-piece holder having a side annular body portion, and a single seal ring installed in a single annular groove formed between the opposing inner diameter side ring body portion and the outer diameter side ring body portion in this holder. The seal ring is bent and press-contacted to the outer surface of the collar when the door is in a closed state, and when the pressure in the outer space of the door increases, the contact pressure increases while the inner surface of the door increases. It can be configured to have a lip that reduces the contact pressure when the pressure in the space increases.

According to this configuration, it is possible to reduce the radial dimension of the holder while ensuring sufficient sealing performance. Further, by configuring the sealing device with a single sealing ring, the configuration can be simplified, so it is possible to reduce the cost of the watertight door unit.

Further, in the watertight door unit, the sealing device includes an inner ring body fixed to the inner surface of the door, extending toward the collar side, and arranged parallel to each other in a radial direction and spaced apart from each other. A holder having a two-piece structure including a ring body, and a single seal ring installed in a single annular groove surrounded by the inner ring body, the outer ring body, and the inner surface of the door. The seal ring is bent and pressed against the outer surface of the collar when the door is closed, and when the pressure in the outer space of the door increases, the contact pressure increases, while the pressure in the inner space of the door increases. It can be configured to have a lip that reduces the contact pressure when raised.

According to the present invention, although the mounting bracket and the fixing ring have a simple shape and can be constructed relatively easily as a whole, the mounting bracket and the fixing ring can be sufficiently attached to the wall. It is possible to provide a watertight door unit that can be installed with strength.

1 is a cross-sectional view of an embodiment of a watertight door unit according to the present invention. FIG. 2 is a front view of the watertight door unit of FIG. 1; FIG. 3 is an exploded perspective view of the watertight door unit of FIGS. 1 and 2. FIG. FIG. 3 is a cross-sectional view taken along the line (4)-(4) in FIG. 2, viewed from the direction of the arrow. FIG. 3 is a cross-sectional view taken along the line (5)-(5) in FIG. 2, viewed from the direction of the arrow. FIG. 6 is a diagram showing a partially disassembled state of the sealing device of FIG. 5; FIG. 3 is a diagram illustrating a state in which a leakage test is performed on the watertight door unit in FIG. 2; 5 is a diagram showing another example of the sealing device of FIG. 4. FIG. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention. FIG. 3 is a cross-sectional view of another embodiment of the watertight door unit according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, best embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of the present invention is shown in FIGS. 1 to 7. The illustrated watertight door unit is installed on a wall 1 and includes a mounting bracket 2, a fixing ring 3, a door 4, a sealing device 5, and the like.

The wall portion 1 is made of concrete, for example, and is provided with a through hole 1a having a rectangular shape when viewed from the front at a predetermined position.

The mounting bracket 2 has a square cylindrical portion 21 and a collar 22. The collar 22 is integrally provided at one open end of the central axis of the cylindrical portion 21 so as to extend radially outward. An annular piece 22a is provided on the outer periphery of this collar 22. A reinforcing material 23 is installed between the cylindrical portion 21 and the collar 22.

The cylindrical part 21 of the mounting bracket 2 is inserted into the through hole 1a of the wall part 1 with a gap, and the collar 22 is arranged on the outer surface of the wall part 1 so as to face the outer peripheral part of one opening of the through hole 1a. be done.

The outer circumferential surface of the cylindrical portion 21 and the inner surface of the collar 22 in this mounting bracket 2 are arranged so as to create a predetermined gap between them and the wall portion 1, and a water stop material 6 as a sealing member is provided in this gap. is now filled. Examples of this water stop material 6 include non-shrinkage mortar.

The fixing ring 3 is made of a square annular plate, and an annular piece 31 is provided on its outer periphery.

The fixing ring 3 is fitted onto the outer circumferential surface of the cylindrical portion 21 of the mounting bracket 2 at a position closer to the other opening, and its inner circumferential edge is in contact with the inner surface of the wall portion 1 . This contact portion is joined to the outer peripheral surface of the cylindrical portion 21 of the mounting bracket 2 by, for example, welding or the like.

The door 4 is coupled to the collar 22 of the mounting bracket 2 via a hinge 41, and allows one opening of the through hole 1a of the wall portion 1 to be opened and closed.

This door 4 is provided with a lock handle 42, a latch 43, and a power transmission mechanism (not shown).

The door 4 has a combination of an outer panel 4a, an inner panel 4b, and a frame 4c. The cross-sectional shape of the frame 4c is U-shaped with an open inner circumference.

Note that the power transmission mechanism transmits power between the lock handle 42 and the latch 43. Although illustration and description of the detailed structure of this power transmission mechanism will be omitted, any one can be adopted from among various types generally available on the market.

Then, in conjunction with the rotation of the lock handle 42, the latch 43 engages with the latch receiver 24 provided on the collar 22 of the mounting bracket 2, thereby entering a locked state in which the door 4 is closed. By separating from the receiver 24, the door 4 is brought into an unlocked state in which it can be freely opened.

The sealing device 5 is installed on the inner surface of the door 4 and seals the space facing the outer surface of the collar 22 of the mounting bracket 2, and includes a holder 51 and two seal rings 52 and 53. .

The holder 51 is made of a square annular plate, and is joined to the inner surface of the door 4 by, for example, welding, so that it faces the collar 22 of the mounting bracket 2 when the door 4 is closed. Two annular grooves 51a and 51b are provided on the inner surface of the holder 51 and are spaced apart from each other in the radial direction.

The seal rings 52 and 53 are made of an elastic material and are installed in the two annular grooves 51a and 51b of the holder 51, respectively.

The seal rings 52, 53 have lips 52a, 53a, and as shown in FIGS. 4 and 5, the tips of the lips 52a, 53a of the two seal rings 52, 53 are arranged so as to face each other. There is.

Note that the seal rings 52 and 53 are fastened together via the presser plate 7 and the bolt 8 while being installed in the annular grooves 51a and 51b. Each lip 52a, 53a is pressed against the collar 22 of the mounting bracket 2 in an elastically deformed state (flexed state) when the door 4 is closed.

Here, when the pressure (external pressure) in the outer space of the door 4 increases, the sealing surface pressure (contact pressure of the lip 52a) of the seal ring 52 on the inner diameter side increases, while the pressure in the inner space of the door 4 increases. When the (internal pressure) increases, the sealing surface pressure (contact pressure of the lip 53a) of the seal ring 53 on the outer diameter side increases. In this way, as the external pressure or internal pressure increases, the sealing surface pressure of each seal ring 52, 53 increases, and high sealing performance is exhibited.

Further, the holder 51 is provided with a pressurizing hole 51c and an air vent hole 51d which are spaced apart from each other and open toward the space between the opposing lips 52a and 53a of the two seal rings 52 and 53.

Note that the pressurizing hole 51c and the air vent hole 51d are arranged at positions facing each other by 180 degrees, as shown in FIG. 2, for example, and are normally closed by a plug (not shown) attached thereto.

When performing a leakage test, the plug is removed and, as shown in FIG. 7, the pressurizing tube 10 is connected to the pressurizing hole 51c, while the air venting tube 15 is connected to the air venting hole 51d.

The pressurizing pipe 10 is provided with an on-off valve 11 and a water pressure supply source 12. A gauge 16 and an air bleed valve 17 are attached to the air bleed pipe 15. Here, for example, a predetermined water pressure is applied to the pressurizing hole 51c by the water pressure supply source 12, and this state is continued for a predetermined period of time, during which time the presence or absence of water leakage from the two seal rings 52 and 53 is visually checked. You may want to check.

Next, a procedure for installing the watertight door unit described above on the wall portion 1 will be explained.

First, the cylindrical portion 21 of the mounting bracket 2 is inserted into the through hole 1a of the wall 1, and the collar 22 of the mounting bracket 2 is opposed to the outer surface of the wall 1 with a predetermined gap therebetween. This opposing gap is filled with a water stop material 6. Incidentally, as a method for filling the water stop material 6, for example, although not shown, a through hole is provided at an appropriate position in the cylindrical portion 21 of the mounting bracket 2, and the water stop material 6 is filled from this through hole into the opposing gap. It is possible to make it into a filling form.

Then, the fixing ring 3 is fitted from the inside of the wall 1 to the distal end side of the outer peripheral surface of the cylindrical part 21 of the mounting bracket 2, so that the fixing ring 3 is brought into contact with the inner surface of the wall 1, and The peripheral edge is brought into contact with the outer peripheral surface of the cylindrical portion 21 of the mounting fitting 2.

After the wall portion 1 is sandwiched between the flange 22 of the mounting bracket 2 and the fixing ring 3 in the thickness direction, the inner circumferential edge of the fixing ring 3 is welded, for example, to the outer circumferential surface of the cylindrical portion 21 of the mounting bracket 2. Join by.

Then, the door 4 is hinged to the collar 22 of the mounting bracket 2. When the door 4 is closed, the lips 52a and 53a of the two seal rings 52 and 53 are bent and pressed against the collar 22 of the mounting bracket 2.

In this state, the pressurizing pipe 10 is connected to the pressurizing hole 51c, the air venting pipe 15 is connected to the air venting hole 51d, and a constant pressure is maintained between the two opposing seal rings 52 and 53 by the water pressure supply source 12. By injecting water and pressurizing it for a certain period of time, it is possible to inspect whether or not water leaks from the two seal rings 52 and 53.

As explained above, according to the embodiment to which the present invention is applied, in order to attach the door 4 to the wall 1 in an openable/closable manner, the wall 1 is sandwiched between the collar 22 of the mounting bracket 2 and the fixing ring 3 from the thickness direction. At the same time, the inner peripheral edge of the fixing ring 3 is joined to the outer circumferential surface of the mounting bracket 2, thereby fixing the mounting bracket 2 and the fixing ring 3 to the wall portion 1.

As a result, the mounting bracket 2 and the fixing ring 3 have a simple shape and can be installed relatively easily as a whole, while the mounting bracket 2 and the fixing ring 3 can be attached to the wall 1 with sufficient strength. Since it becomes possible to attach the door 4, it becomes possible to attach the door 4 firmly.

Furthermore, by making the sealing device 5 into a so-called double seal structure, the sealing performance is improved as much as possible, and since it is configured to use the seal rings 52 and 53 as described above, the periodicity of the seal rings 52 and 53 is improved. This is advantageous in terms of easy replacement and reduced running costs.

Furthermore, by pressurizing the door 4 at a specified pressure for a certain period of time from the pressurizing hole 51c in a closed state, leakage inspection of the seal rings 52 and 53 can be performed relatively easily.

Note that the present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the claims and within the scope equivalent to the claims.

(1) The two seal rings 52 and 53 of the sealing device 5 can be mounted on the holder 51 so that the lips 52a and 53a are oriented in the same direction as shown in FIG. 8, for example.

In this case, if each lip 52a, 53a faces outward, the effect of preventing the passage of moisture from the outside to the inside can be increased as much as possible, and each lip 52a, 53a faces inward. This makes it possible to increase the effect of preventing moisture from passing from the inside to the outside as much as possible.

The other configurations are basically the same as those of the embodiment shown in FIGS. 1 to 7. This embodiment also provides the same functions and effects as those of the above embodiment.

(2) FIG. 9 shows another embodiment of the present invention. In this embodiment, the annular piece 22a of the flange 22 of the mounting bracket 2 and the annular piece 31 of the fixed ring 3 shown in FIG. By providing a seal ring 19 as a sealing member on the outer periphery of the fixed ring 3, the space between the outer periphery of the collar 22 and the wall 1 facing each other and the space between the outer periphery of the fixed ring 3 and the wall 1 facing each other are closed. That's what I do.

The other configurations are basically the same as those of the embodiment shown in FIGS. 1 to 7. This embodiment also provides the same functions and effects as those of the above embodiment.

(3) FIG. 10 shows another embodiment of the present invention. In this embodiment, the water stop material 6 between the facing part of the flange 22 of the mounting bracket 2 and the wall part 1 and the facing part of the fixing ring 3 and the wall part 1 shown in FIG. The water stop material 6 filled between the outer circumferential surface and the wall portion 1 facing each other is left.

After the flange 22 and the fixing ring 3 are brought into contact with the wall 1, a caulking material 18a is provided on the outer periphery of the flange 22 as a sealing member, and a caulking material 18a is provided on the outer periphery of the fixing ring 3 as a sealing member. By providing the caulking material 19a, the space between the outer peripheral edge of the collar 22 and the wall portion 1 and the space between the outer peripheral edge of the fixing ring 3 and the wall portion 1 are closed.

The other configurations are basically the same as those of the embodiment shown in FIGS. 1 to 7. This embodiment also provides the same functions and effects as those of the above embodiment.

(4) FIG. 11 shows another embodiment of the present invention. In this embodiment, the water stop material 6 shown in FIG. By providing the caulking material 18a as well as the caulking material 19a as a sealing member on the outer peripheral edge of the fixing ring 3, the space between the opposing outer peripheral edge of the collar 22 and the wall portion 1 as well as between the outer peripheral edge of the fixing ring 3 and the wall portion is I try to block the space facing 1.

The other configurations are basically the same as those of the embodiment shown in FIGS. 1 to 7. This embodiment also provides the same functions and effects as those of the above embodiment.

(5) In each of the above embodiments, although not shown, for example, the fixing ring 3 may be fastened to the wall portion 1 with an anchor bolt or the like. In that case, it becomes possible to further increase the mounting strength of the watertight door unit.

(6) FIG. 12 shows another embodiment of the present invention. In this embodiment, the sealing device 5 shown in FIG. 11 has a single seal structure.

Specifically, the sealing device 5 has a one-piece structure holder 51 having a U-shaped cross section, and includes an inner ring body part 51e, an outer ring body part 51f, and a bottom plate part 51g. ing.

The inner ring body part 51e and the outer ring body part 51f are arranged parallel to each other in the radial direction and spaced apart from each other, and the inner ring body part 51e and the outer ring body part 51f are connected to the bottom plate part 51g. are connected together.

The holder 51 has a bottom plate portion 51g fixed to the inner plate 4b of the door 4 by, for example, welding. Thereby, the inner diameter side ring body part 51e and the outer diameter side ring body part 51f extend toward the collar 22 of the mounting bracket 2 and are arranged parallel to each other and spaced apart in the radial direction.

In this holder 51, a single seal ring 52 is installed in an annular groove 51b formed between the opposing inner diameter side ring body part 51e and the outer diameter side ring body part 51f.

Seal ring 52 has a lip 52a. This lip 52a is bent and pressed against the outer surface of the collar 22 of the mounting bracket 2 when the door 4 is in the closed state.

A presser plate 7 is fixed to the free end of the inner ring portion 51e of the holder 51 with bolts 8. The seal ring 52 is held in the annular groove 51b by the holding plate 7 so as not to come off. Note that, instead of the presser plate 7, a retaining piece (see FIG. 15) that projects radially outward may be integrally provided at the free end of the inner ring body portion 51e.

When the door 4 is closed, the free end of the inner ring body part 51e of the holder 51 comes into contact with the collar 22 of the mounting bracket 2, while the outer ring body part of the holder 51 comes into contact with the collar 22 of the mounting bracket 2. The free end of 51f is made non-contact with the collar 22 of the mounting bracket 2. Note that the free end of the outer ring body portion 51f may be brought into contact with the collar 22.

In this state where the door 4 is closed, when the pressure in the space outside the door 4 increases, the sealing surface pressure of the seal ring 52 (the contact pressure of the lip 52a) increases, while the pressure inside the door 4 increases. When the pressure in the space increases, the sealing surface pressure of the seal ring 52 decreases.

By the way, in the door 4, the outer plate 4a and the outer flange portion 4d of the frame body 4c are overlapped, and the overlapped portion is fixed by being fastened with bolts 9A and nuts 9B. On the other hand, the inner plate 4b and the inner flange portion 4e of the frame body 4c are overlapped, and the outer peripheral edge and inner peripheral edge of the overlapped portion are joined, for example, by welding. Due to these, when water rises in the outer space of the door 4, water may enter the inner space of the door 4 from the outer panel 4a side, but the water that has entered the inner space of the door 4 will not exceed the inner panel 4b. This makes it possible to prevent the objects from passing into the space inside the door 4.

The other configurations are basically the same as the embodiment shown in FIG. 11. According to the configuration of this embodiment, it is possible to reduce the radial dimension of the holder 51 while ensuring sufficient sealing performance. Furthermore, since the configuration of the sealing device 5 can be simplified, the cost of the watertight door unit can be reduced.

(7) FIG. 13 shows another embodiment of the present invention. In this embodiment, the one-piece structure holder 51 provided in the sealing device 5 shown in FIG. 12 is made into a two-piece structure consisting of an inner ring body 51A and an outer ring body 51B.

Specifically, the inner ring body 51A and the outer ring body 51B are fixed to the inner plate 4b of the door 4, for example, by welding.

Further, a single seal ring 52 is installed in a single annular groove 51b surrounded by the inner ring body 51A, the outer ring body 51B, and the inner plate 4b of the door 4.

Furthermore, a retaining piece 51A1 that projects radially outward is integrally provided at the free end of the inner ring body 51A. The seal ring 52 is held in the annular groove 51b by this retaining piece 51A1.

Note that instead of the retaining piece 51A1 of the inner ring body 51A, it is possible to fix the presser plate 7 with a bolt 8, as shown in FIG. 12, for example.

When the door 4 is closed, the free end of the inner ring body 51A is in contact with the collar 22 of the mounting bracket 2, while the free end of the outer ring body 51B is in contact with the collar 22 of the mounting bracket 2. It is designed so that it does not come in contact with the tsuba 22. Note that the free end of the outer ring body 51B may be brought into contact with the collar 22.

In this state where the door 4 is closed, when the pressure in the space outside the door 4 increases, the sealing surface pressure of the seal ring 52 (the contact pressure of the lip 52a) increases, while the pressure inside the door 4 increases. When the pressure in the space increases, the sealing surface pressure of the seal ring 52 decreases.

The other configurations are basically the same as the embodiment shown in FIG. 12. According to the configuration of this embodiment, since the configuration of the sealing device 5 can be simplified, it is possible to reduce the cost of the watertight door unit.

(8) FIG. 14 shows another embodiment of the present invention. In this embodiment, the inner ring body 51A and the outer ring body 51B, which are the two-piece holder 51 shown in FIG. 13, are integrated with the frame 4c of the door 4.

Specifically, in the door 4, the frame 4c is made to protrude outward in the radial direction from the outer peripheral edge of the outer plate 4a and the inner plate 4b, and the inner ring body 51A is attached to the outer surface of the inner flange 4e of the frame 4c. And the outer diameter side ring body 51B is fixed by, for example, welding.

Further, the overlapping portion of the inner plate 4b of the door 4 and the inner flange 4e of the frame 4c is fixed by being fastened with bolts 9A and nuts 9B.

Further, a single seal ring 52 is installed in a single annular groove 51b surrounded by the inner ring body 51A, the outer ring body 51B, and the inner flange 4e of the frame 4c of the door 4. .

A retaining piece 51A1 that projects radially outward is integrally provided at the free end of the inner ring body 51A. The seal ring 52 is held in the annular groove 51b without coming off by the protruding piece 41A1.

Note that instead of the retaining piece 51A1 of the inner ring body 51A, it is possible to fix the presser plate 7 with a bolt 8, as shown in FIG. 12, for example.

When the door 4 is closed, the free end of the inner ring body 51A is in contact with the collar 22 of the mounting bracket 2, while the free end of the outer ring body 51B is in contact with the collar 22 of the mounting bracket 2. It is designed so that it does not come in contact with the tsuba 22. Note that the free end of the outer ring body 51B may be brought into contact with the collar 22.

In this state where the door 4 is closed, when the pressure in the space outside the door 4 increases, the sealing surface pressure of the seal ring 52 (the contact pressure of the lip 52a) increases, while the pressure inside the door 4 increases. When the pressure in the space increases, the sealing surface pressure of the seal ring 52 decreases.

By the way, in the door 4, the outer plate 4a and the outer flange 4d of the frame 4c are overlapped, and the outer peripheral edge and inner peripheral edge of the overlapped part are joined by, for example, welding. On the other hand, the overlapping portion of the inner plate 4b and the inner flange 4e of the frame 4c is fixed by being fastened with bolts 9A and nuts 9B. With these things, when the water level rises in the space outside the door 4, this water can be prevented from entering the space inside the door 4.

The other configurations are basically the same as the embodiment shown in FIG. 13. According to the configuration of this embodiment, since the configuration of the sealing device 5 can be simplified, it is possible to reduce the cost of the watertight door unit.

(9) FIG. 15 shows another embodiment of the present invention. In this embodiment, a one-piece holder 51 of the sealing device 5 shown in FIG. 12 is fixed between the inner plate 4b of the door 4 and the inner flange 4e of the frame 4c, for example, by welding. The holder 51 and the inner plate 4b of the door 4 are flush with each other.

Specifically, a bulging portion 51h that bulges radially inward is provided on the inner diameter side of the inner ring portion 51e of the holder 51, thereby increasing the rigidity of the holder 51.

Further, the bottom plate portion 51g of the holder 51 is fixed to the inner flange portion 4e of the frame 4c of the door 4 by, for example, welding, and the bulging portion 51h of the holder 51 is fixed to the inner plate 4b of the door 4 by, for example, welding. There is.

Further, in the holder 51, a single seal ring 52 is installed in a single annular groove 51b formed between the opposing inner diameter side ring body part 51e and the outer diameter side ring body part 51f.

A protruding piece 51i that protrudes radially outward is integrally provided at the free end of the inner ring body portion 51e of the holder 51. As shown in FIG. The seal ring 52 is held in the annular groove 51b without coming off by the protrusion 51i.

Note that instead of the protruding piece 51i of the inner ring body portion 51e, for example, as shown in FIG. 12, the holding plate 7 may be fixed with a bolt 8.

When the door 4 is closed, the free end of the inner ring body part 51e of the holder 51 comes into contact with the collar 22 of the mounting bracket 2, while the outer ring body part of the holder 51 comes into contact with the collar 22 of the mounting bracket 2. The free end of 51f is made non-contact with the collar 22 of the mounting bracket 2. Note that the free end of the outer ring body portion 51f may be brought into contact with the collar 22.

In this state where the door 4 is closed, when the pressure in the space outside the door 4 increases, the sealing surface pressure of the seal ring 52 (the contact pressure of the lip 52a) increases, while the pressure inside the door 4 increases. When the pressure in the space increases, the sealing surface pressure of the seal ring 52 decreases.

By the way, in the door 4, the outer plate 4a and the outer flange portion 4d of the frame body 4c are overlapped, and the overlapped portion is fixed by being fastened with bolts 9A and nuts 9B. On the other hand, the inner plate 4b is fixed to the bulge 51h of the holder 51 by, for example, welding. Due to these, when the water level rises in the outer space of the door 4, water may infiltrate into the inner space of the door 4 from the outer panel 4a side, but the water that has entered the inner space of the door 4 will not reach the inner panel 4b. This makes it possible to prevent the door from passing beyond the space into the inner space of the door 4.

The other configurations are basically the same as the embodiment shown in FIG. 12.

In this embodiment, the one-piece holder 51 provided in the sealing device 5 is configured to be flush with the inner plate 4b of the door 4, so it is possible to eliminate protrusion from the inner plate 4b of the door 4. Become.

(10) FIG. 16 shows another embodiment of the present invention. In this embodiment, the frame 4c of the door 4 shown in FIG. 12 has an L-shaped cross section, and a one-piece holder 51 of the sealing device 5 shown in FIG. The cross section of the frame 4c is made into a U-shape by joining, for example, by welding, to the free end of the outer circumferential plate portion 4f of the frame 4c.

Specifically, the bottom plate portion 51g of the holder 51 is provided with an extension portion 51j that extends inward in the radial direction, and the holder 51 is provided at the free end of the outer peripheral plate portion 4f of the L-shaped frame 4c. is fixed.

In addition, the outer diameter of the inner plate 4b of the door 4 is reduced, and the extending portion 51j of the holder 51 is overlapped on the inner surface of the inner plate 4b, and the overlapped portion is fastened with bolts 9A and nuts 9B. It is fixed by Furthermore, the outer ring body portion 51f of the holder 51 is fixed to the free end of the outer peripheral plate portion 4f of the frame body 4c by, for example, welding.

Further, in the holder 51, a single seal ring 52 is installed in a single annular groove 51b formed between the opposing inner diameter side ring body part 51e and the outer diameter side ring body part 51f.

A protruding piece 51i that protrudes radially outward is integrally provided at the free end of the inner ring body portion 51e of the holder 51. As shown in FIG. The seal ring 52 is held in the annular groove 51b without coming off by the protrusion 51i.

Note that instead of the protruding piece 51i of the inner ring body portion 51e, for example, as shown in FIG. 12, the holding plate 7 may be fixed with a bolt 8.

When the door 4 is closed, the free end of the inner ring body part 51e of the holder 51 comes into contact with the collar 22 of the mounting bracket 2, while the outer ring body part of the holder 51 comes into contact with the collar 22 of the mounting bracket 2. The free end of 51f is made non-contact with the collar 22 of the mounting bracket 2. Note that the free end of the outer ring body portion 51f may be brought into contact with the collar 22.

In this state where the door 4 is closed, when the pressure in the space outside the door 4 increases, the sealing surface pressure of the seal ring 52 (the contact pressure of the lip 52a) increases, while the pressure inside the door 4 increases. When the pressure in the space increases, the sealing surface pressure of the seal ring 52 decreases.

By the way, in the door 4, the outer plate 4a and the outer flange 4d of the frame 4c are overlapped, and the outer peripheral edge and inner peripheral edge of the overlapped part are joined by, for example, welding. On the other hand, the overlapping portion of the inner plate 4b and the extension portion 51j of the holder 51 is fixed by being fastened with bolts 9A and nuts 9B. With these things, when the water level rises in the space outside the door 4, this water can be prevented from entering the space inside the door 4.

The other configurations are basically the same as the embodiment shown in FIG. 12.

In this embodiment, the one-piece structure holder 51 provided in the sealing device 5 is used as the inner diameter side ring part (see reference numeral 51e in FIG. 15) of the frame 4c of the door 4. It becomes possible to simplify the configuration and reduce the cost of the watertight door unit.

(11) In the embodiments shown in FIGS. 12 to 16, the configuration is based on the embodiment that does not employ the water stop material 6 as shown in FIG. 11, but FIGS. , it is possible to have a configuration based on an embodiment that employs a sealing member (water stop material 6, seal rings 18, 19, caulking materials 18a, 19a, etc.) as shown in FIG.

INDUSTRIAL APPLICATION This invention can be utilized suitably for a watertight door unit.

1 Wall part
1a Through hole 2 Mounting bracket
21 Cylinder part
22 Tsuba
23 Reinforcement material
24 Latch receiver 3 Fixing ring 4 Door
41 Hinge
42 Lock handle
43 Latch 5 Sealing device
51 Holder
51a, 51b annular groove
51c Pressure hole
51d Air vent hole
52 Inner diameter seal ring
52a Lip
53 Seal ring on the outer diameter side
53a Lip 6 Water stop material

Claims (5)

A watertight door unit that can be opened and closed in a through hole in a solid wall,
A cylindrical part is inserted into the through hole so as to create an opposing gap between the through hole and the inner circumferential surface of the through hole, and the outer surface of the wall part of the one opening abuts the outer circumferential part of the one opening of the through hole. a mounting bracket having a tsuba;
a fixing ring that is fitted onto the outer peripheral surface of the cylindrical portion of the mounting bracket at a position closer to the other opening and abuts against the inner surface of the wall;
a door hinged to the flange to enable opening and closing of one opening of the through hole;
a sealing device provided on the inner surface of the door to seal the space between the door and the outer surface of the flange;
The opposing gap is filled with a water stop material, and a caulking material is provided on the outer periphery of the flange so as to close the contact portion between the outer periphery of the flange and the outer surface of the wall. , a caulking material is provided on the outer periphery of the fixing ring so as to close the abutting portion between the outer periphery of the fixing ring and the inner surface of the wall,
A watertight door unit characterized in that an inner circumferential edge of the fixing ring is joined to an outer circumferential surface of the cylindrical portion of the mounting bracket. The watertight door unit according to claim 1,
The sealing device includes a holder made of an annular plate fixed to the inner surface of the door and facing the flange, and seals installed in two annular grooves spaced apart from each other in the radial direction on the inner surface of the holder. having a ring;
A watertight door unit characterized in that the two seal rings have lips that are pressed against the outer surface of the brim when the door is in a closed state . The watertight door unit according to claim 2 ,
The two seal rings are arranged such that the tips of their lips face each other,
A watertight door unit characterized in that the holder is provided with a pressurizing hole and an air vent hole that are spaced apart from each other and open between the opposing lips. The watertight door unit according to any one of claims 1 to 3,
The sealing device has a one-piece structure that is fixed to the inner surface of the door, extends toward the flange, and has an inner ring portion and an outer ring portion that are arranged parallel to each other and spaced apart in the radial direction. a holder, and a single seal ring installed in a single annular groove formed between the facing inner ring body part and the outer ring body part in this holder,
The seal ring is bent and pressed against the outer surface of the collar when the door is closed, and when the pressure in the outer space of the door increases, the contact pressure increases, while the pressure in the inner space of the door increases. A watertight door unit characterized by having a lip that reduces contact pressure when the door unit is opened . The watertight door unit according to any one of claims 1 to 3 ,
The sealing device includes a two-piece holder that is fixed to the inner surface of the door, extends toward the flange, and includes an inner ring body and an outer ring body that are arranged parallel to each other and spaced apart in the radial direction. and a single seal ring installed in a single annular groove surrounded by the inner ring body, the outer ring body, and the inner surface of the door,
The seal ring is bent and pressed against the outer surface of the collar when the door is in a closed state, and when the pressure in the outer space of the door increases, the contact pressure increases, while the pressure in the inner space of the door increases. A watertight door unit characterized in that it has a lip that reduces contact pressure when the contact pressure is reduced .

Images