JP2021185296A - Watertight master-slave door unit - Google Patents

Abstract

To provide a watertight master-slave door unit which is constituted to be relatively easily mounted, enables attachment elements (a mounting fitting and a fixing ring) of a master door to be attached to its wall with sufficient strength, and secures a sufficient sealing performance in spite of a comparatively simple constitution.SOLUTION: For the purpose of attaching a master door 4 having a slave door 5 to a wall part 1 to be openable and closable, the wall part 1 is sandwiched by a collar 22 of a mounting fitting 2 and a fixing ring 3 from a thickness direction, and an inner peripheral edge of the fixing ring 3 is connected to an outer peripheral surface of the mounting fitting 2, so that the mounting fitting 2 and the fixing ring 3 are fixed to the wall part 1. With sealing members 6, 7 sealing a fitting part between the mounting fitting 2 and a penetration hole 1a of the wall part 1, a seal ring 9 for the master door seals between an inner surface of the master door 4 and an outer surface of a protruded slender portion 24 of the mounting fitting 2, and a seal ring 10 for the slave door seals between an inner surface of the slave door 5 and an outer surface of a ring body 4C.SELECTED DRAWING: Figure 1

Description

The present invention relates to a watertight parent-child door unit.

For example, in Patent Document 1, "in a door with a child door for building evacuation in which a child door 3 that opens outward is attached to a child door opening 55 of the parent door 2 that opens outward, the door frame 1 of the main door 2 is framed in a rectangular shape. However, the door frame 1 is fixed to the reinforcing bar of the building by using an anchor. "

Further, in Patent Document 1, "By attaching the airtight material 9 to the door frame 1 via the airtight material receiving strip 8, the space between the main door 2 and the door frame 1 is made airtight, and the main door 2 is made airtight. By attaching the airtight material 9 to the child door opening 55 via the airtight material receiving strip 8, the space between the child door 3 and the child door opening 55 of the parent door 2 is made airtight. "

For example, Patent Document 2 describes that "in a door with an evacuation child door in which an inward opening child door 3 is attached to an opening 21 of an outward opening parent door 2, the door frame 4 is fixed to a skeleton by an anchor". Has been done.

Further, in Patent Document 2, "By attaching the airtight material 42 to the door frame 4 via the airtight material receiving strip 41, the space between the main door 2 and the door frame 4 is made airtight, and the main door 2 is made airtight. By attaching the airtight material 226 to the middle bone 22b via the airtight material receiving strip 224, the space between the child door 3 and the middle bone 22b of the main door 2 is made airtight. "

Japanese Unexamined Patent Publication No. 2013-227825 Japanese Unexamined Patent Publication No. 2012-149453

In Patent Documents 1 and 2, when the building is made of reinforced concrete, there is a concern that the installation work of the door frame becomes complicated because it is necessary to avoid the reinforcing bars when placing the anchors.

Further, the "airtight material (9, 42, 226)" of Patent Documents 1 and 2 has a hollow shape and an elliptical cross-sectional shape, and a part of the outer periphery thereof is in contact with the facing mating surface. Therefore, when the pressure in the outer space of the door increases, there is a concern that the airtight material is elastically deformed and the airtightness of the airtight material tends to decrease.

In view of such circumstances, the present invention has a configuration that can be relatively easily installed, yet allows the mounting element of the main door to be mounted on the wall portion with sufficient strength, and has a relatively simple configuration. The purpose is to provide a watertight parent-child door unit that ensures sufficient sealing performance.

The present invention is a watertight parent-child door unit that can be opened and closed in a through hole of a wall portion, has a tubular portion inserted into the through hole, and has an outer peripheral portion of an outer opening of the through hole on the outer surface of the wall portion. A mounting bracket having a flange arranged to face the door and an outer peripheral surface of the cylinder portion of the mounting bracket so as to face the inner surface of the wall portion, and the inner peripheral edge is joined to the outer peripheral surface of the cylinder portion. The fixing ring to be used, the main door attached to the flange via a hinge so as to be able to open and close the through hole, and the opening for the child door, and the opening for the child door of the parent door can be opened and closed. A child door that is attached to the master door via a hinge, a sealing member provided between at least one of the cylinder portion and the flange, and the wall portion, and one of the mounting bracket and the master door. A seal ring for a master door for sealing between the mounting bracket and the master door in a closed state, and one of the child door opening of the master door and the child door. The child door seal ring is provided with a child door seal ring for sealing between the child door opening and the child door facing each other in a closed state of the child door, and the tip of the parent door seal ring has a diameter. The contact pressure extends diagonally outward in the direction and bends when the main door is closed and is pressed against either the mounting bracket or the main door, and when the pressure in the outer space of the main door rises. The child door seal ring has an increasing lip, the tip of which extends diagonally outward in the radial direction, and bends when the child door is closed, either of the child door opening or the child door. It is characterized by having a lip that is pressed against the other and the contact pressure increases when the pressure in the outer space of the child door rises.

In this configuration, in order to attach the parent door with the child door to the wall portion so as to be openable and closable, the wall portion is sandwiched between the flange of the mounting bracket and the fixing ring from the thickness direction, and the fixing ring is sandwiched. By joining the inner peripheral edge of the door to the outer peripheral surface of the mounting bracket, the mounting bracket and the fixing ring are fixed to the wall portion.

As a result, the mounting bracket and the fixing ring have a simple shape and can be installed relatively easily as a whole, but the mounting bracket and the fixing ring have sufficient strength on the wall portion. It will be possible to install it.

Further, in the above configuration, after the fitting portion between the mounting bracket and the through hole of the wall portion is sealed by the sealing member, the master door and the mounting bracket are connected by the seal ring for the master door. Since the facing space is sealed and the space between the child door and the master door is sealed by the child door seal ring, the watertight parent-child door unit according to the present invention has a relatively simple configuration. However, sufficient sealing performance (water-stopping) and safety can be ensured.

Moreover, according to the above configuration, when the pressure in the outer space of the main door increases, the contact pressure of the lip of the seal ring for the main door increases, and the lip of the seal ring for the child door increases. The contact pressure will increase. This makes it possible to prevent pressure from leaking from the outside to the inside of the main door.

By the way, in the watertight parent-child door unit, the sealing member is filled in the outer peripheral surface of the cylinder portion, the space between the inner surface of the collar and the wall portion, and the space between the fixing ring and the wall portion, respectively. It can be configured as a waterproof material.

Further, in the watertight parent-child door unit, the sealing member includes a water blocking material filled between the outer peripheral surface of the cylinder portion and the wall portion facing each other, and the collar and the wall portion on the outer peripheral edge of the collar. The configuration can include a caulking material provided so as to close the facing space between the two, and a caulking material provided on the outer peripheral edge of the fixing ring so as to close the facing space between the fixing ring and the wall portion.

Further, in the watertight parent-child door unit, a ridge portion protruding inward in the radial direction is provided in the axial intermediate region on the inner peripheral surface of the tubular portion, and is provided on the outer diameter side on the inner surface of the master door. Is provided with an annular groove that opens toward the ridge side, the master door seal ring is mounted in the annular groove, and the lip of the master door seal ring is the parent. It can be configured such that when the door is closed, it bends and is pressed against the outer surface of the protrusion and the contact pressure increases when the pressure in the outer space of the main door rises.

According to this configuration, when the pressure in the outer space of the master door increases, the contact pressure of the lip of the master door seal ring with respect to the inner surface of the master door increases. This makes it possible to prevent pressure from leaking from the outside to the inside of the main door.

Further, in the watertight parent-child door unit, a ridge portion protruding inward in the radial direction is provided in the axial intermediate region on the inner peripheral surface of the tubular portion, and the ridge portion is provided with the main door. An annular groove that opens toward the side is provided, and the master door seal ring is mounted in the annular groove, and the lip of the master door seal ring bends when the master door is closed. The contact pressure can be increased when the pressure is applied to the inner surface of the master door and the pressure in the outer space of the master door increases.

According to this configuration, when the pressure in the outer space of the master door increases, the contact pressure of the lip of the master door seal ring with respect to the inner surface of the master door increases. This makes it possible to prevent pressure from leaking from the outside to the inside of the main door.

Further, in the watertight parent-child door unit, the opening edge of the child door opening of the parent door is provided with a ring body that projects inward in the radial direction to receive the child door, and is provided outside the child door. An annular groove that opens toward the ring body is provided on the radial side, the child door seal ring is mounted in the annular groove, and the lip of the child door seal ring is the said. It can be configured such that when the child door is closed, it bends and is pressed against the outer surface of the ring body, and when the pressure in the outer space of the child door rises, the contact pressure increases.

Further, in the watertight parent-child door unit, a ring body for projecting inward in the radial direction to receive the child door is provided on the opening edge of the child door opening of the parent door, and the outside of the ring body. An annular groove that opens toward the child door is provided on the diameter side, the child door seal ring is mounted in the annular groove, and the lip of the child door seal ring is the said. It can be configured such that when the child door is closed, it bends and is pressed against the inner surface of the child door and the contact pressure increases when the pressure in the outer space of the child door rises.

Further, in the watertight parent-child door unit, an annular groove that opens toward the outside of the master door is provided on the inner diameter side of the outer surface of the master door, and the seal ring for the child door is inside the annular groove. The lip of the seal ring for the child door bends when the child door is closed and is pressed against the inner surface of the child door, and when the pressure in the outer space of the child door rises, the contact pressure is applied. Can be configured to increase.

Further, in the watertight parent-child door unit, an annular groove that opens toward the inside of the master door is provided on the inner diameter side of the inner surface of the master door, and the seal ring for the child door is inside the annular groove. The lip of the seal ring for the child door bends when the child door is closed and is pressed against the outer surface of the child door, and when the pressure in the outer space of the child door rises, the contact pressure is applied. Can be configured to increase.

According to the watertight parent-child door unit according to the present invention, the mounting bracket and the fixing ring for attaching the parent door to the wall portion have a simple shape, and the structure can be relatively easily installed as a whole. It is possible to attach the mounting bracket and the fixing ring to the wall portion with sufficient strength, and it is possible to secure sufficient sealing performance while having a relatively simple configuration.

In the first embodiment of the watertight parent-child door unit according to the present invention, it is the figure which looked at the cross section (1)-(1) of FIG. 2 from the direction of an arrow. It is a front view of the watertight parent-child door unit of FIG. It is the figure which looked at the cross section (3)-(3) of FIG. 2 from the direction of an arrow. It is a perspective view which shows typically the state that the parent door of the watertight parent-child door unit of 1st Embodiment was opened. It is a perspective view which shows typically the state that the child door of the watertight parent-child door unit of 1st Embodiment was opened. It is a figure corresponding to FIG. 1 in the 2nd Embodiment of the watertight parent-child door unit which concerns on this invention. It is a figure corresponding to FIG. 1 in the 3rd Embodiment of the watertight parent-child door unit which concerns on this invention. It is a figure corresponding to FIG. 1 in the 4th Embodiment of the watertight parent-child door unit which concerns on this invention. It is a figure corresponding to FIG. 1 in the 5th Embodiment of the watertight parent-child door unit which concerns on this invention. It is a figure corresponding to FIG. 1 in the sixth embodiment of the watertight parent-child door unit which concerns on this invention. The watertight door unit of FIG. 10 is a diagram corresponding to FIG. FIG. 7 is a view of the cross section of the line (12)-(12) of FIG. 13 viewed from the direction of the arrow in the seventh embodiment of the watertight parent-child door unit according to the present invention. It is a front view of the watertight parent-child door unit of FIG. It is a figure corresponding to FIG. 12 in the 8th embodiment of the watertight parent-child door unit which concerns on this invention. 9 is a view corresponding to FIG. 14 in the ninth embodiment of the watertight parent-child door unit according to the present invention.

Hereinafter, the best embodiment for carrying out the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show a first embodiment of the present invention. The watertight parent-child door unit of the illustrated example is installed on the wall portion 1, and includes a mounting bracket 2, a fixing ring 3, a parent door 4, a child door 5, and the like.

The wall portion 1 is made of concrete, for example, and a through hole 1a having a rectangular shape in front view is provided at a predetermined position thereof.

The mounting bracket 2 has a square tubular portion 21 and a flange 22. The collar 22 is integrally provided at one opening end of the central axis of the tubular portion 21 so as to extend outward in the radial direction.

The tubular portion 21 of the mounting bracket 2 is inserted into the through hole 1a of the wall portion 1, and the flange 22 is arranged so as to abut on the outer surface of the wall portion 1 so as to abut on the outer peripheral portion of one opening of the through hole 1a.

The fixing ring 3 is made of a square annular plate, and is fitted outside on the outer peripheral surface of the tubular portion 21 of the mounting bracket 2 at a position closer to the other opening.

The fixing ring 3 is in contact with the inner surface of the wall portion 1, and the inner peripheral edge of the fixing ring 3 is in contact with the outer peripheral surface of the tubular portion 21 of the mounting bracket 2, and this contact portion is in contact with the mounting bracket 2. It is fixed to the outer peripheral surface of the tubular portion 21 of the above by, for example, welding.

A caulking material 6 as a sealing member is provided on the outer peripheral edge of the collar 22, and a caulking material 7 as a sealing member is provided on the outer peripheral edge of the fixing ring 3. As a result, 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.

By the way, a ridge portion 24 projecting inward in the radial direction is provided in an axial intermediate region on the inner peripheral surface of the tubular portion 21 of the mounting bracket 2.

The ridge portion 24 is obtained by attaching a square annular plate to an axial intermediate region on the inner peripheral surface of the tubular portion 21 by, for example, welding.

Due to the presence of the ridge portion 24, a step portion 25 is provided outside the ridge portion 24. The radial wall surface of the step portion 25 is the outer surface of the ridge portion 24.

The stepped portion 25 is described below, but when the main door 4 is closed, the size of the main door 4 is set so that the outer surface of the main door 4 is flush with the outer surface of the flange 22 of the mounting bracket 2. ..

The main door 4 opens and closes the outer opening of the through hole 1a of the wall portion 1, and is connected to the vertical side portion of one side (left side when viewed from the outside) of the flange 22 of the mounting bracket 2 via a hinge 41. ing.

As shown in FIG. 4, the main door 4 opens outward with the left side as a fulcrum when viewed from the outside. As shown in FIGS. 4 and 5, for example, by attaching a wheel 11 called a caster or the like to an arbitrary position (for example, the right side when viewed from the outside) of the lower part of the main door 4, the main door 4 can be attached with a relatively light force. It can be opened and closed.

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

The power transmission mechanism transmits power between the lock handle 42 and the latch 43. Although illustration and description of the detailed configuration of this power transmission mechanism are omitted, any of various types on the market can be adopted.

Then, in conjunction with the rotation of the lock handle 42, the latch 43 is locked to the main door latch receiver 26 provided on the flange 22 of the mounting bracket 2, so that the main door 4 is closed. By detaching the latch 43 from the latch receiver 26 for the main door, the main door 4 can be opened freely in an unlocked state.

The main door 4 is formed in a horizontally long rectangular shape, and has a configuration in which the main door main body 4A on the right half and the square tubular rod 4B on the left end are connected by a square ring 4C. The main door body 4A, the tubular rod body 4B, and the ring body 4C are made of a metal material.

The main door main body 4A has a configuration in which an outer plate 4a, an inner plate 4b, and a frame body 4c are combined. The outer plate 4a and the outer flange portion 4d of the frame body 4c are overlapped with each other, and the outer peripheral edge and the inner peripheral edge of the overlapped portion are fixed by welding, for example. On the other hand, the inner plate 4b and the inner flange portion 4e of the frame body 4c are overlapped with each other, and the outer peripheral edge and the inner peripheral edge of the overlapped portion are fixed by welding, for example. As a result, when the water level in the outer space of the main door 4 rises, it is possible to prevent water from entering the inner space of the main door main body 4A from the outer plate 4a side.

The ring body 4C is composed of a square annular plate, the right vertical portion thereof is fixed to the left side of the main door main body 4A, and the left vertical portion is fixed to the right side of the tubular rod body 4B. The inner hole of the ring body 4C is a vertically long rectangular opening 4f for a child door.

The child door opening 4f is sized so that the child door 5 is fitted so that the outer surface of the child door 5 is flush with the outer surface of the main door 4 and the outer surface of the flange 22 of the mounting bracket 2.

The child door 5 opens and closes the child door opening 4f of the parent door 4, and is connected to the left end of the parent door main body 4A via a hinge 51. The child door 5 opens outward with the right side as a fulcrum when viewed from the front.

The child door 5 is provided with a lock handle 52, a latch 53, and a power transmission mechanism (not shown).

The power transmission mechanism transmits power between the lock handle 52 and the latch 53. Although illustration and description of the detailed configuration of this power transmission mechanism are omitted, any of various types on the market can be adopted.

Then, in conjunction with the rotation of the lock handle 52, the latch 53 is locked to the child door latch receiver 44 provided on the main door 4, so that the child door 5 is closed, while the latch 53 is locked. By detaching from the child door latch receiver 44, the child door 5 is unlocked so that it can be freely opened.

The child door 5 has a configuration in which an outer plate 5a, an inner plate 5b, and a frame body 5c are combined, and the outer plate 5a, the inner plate 5b, and the frame body 5c are made of a metal material. The cross-sectional shape of the frame 5c is U-shaped so that the inner circumference is open.

The outer plate 5a and the outer flange portion 5d of the frame body 5c are overlapped with each other, and the outer peripheral edge and the inner peripheral edge of the overlapped portion are fixed by welding, for example. On the other hand, the inner plate 5b and the inner flange portion 5e of the frame body 5c are overlapped with each other, and the outer peripheral edge and the inner peripheral edge of the overlapped portion are fixed by welding, for example. As a result, when the water level in the outer space of the child door 5 rises, it becomes possible to prevent water from entering the inner space of the child door 5 from the outer plate 5a side.

By the way, in this first embodiment, the space between the main door 4 and the mounting bracket 2 facing each other is sealed by the main door seal ring 9.

Specifically, on the outer diameter side of the inner plate 4b of the main door 4, the inner diameter side ring 45 and the outer diameter side ring 46 are attached, for example, by welding so as to be arranged apart from each other in the radial direction. There is.

As a result, the annular groove 47 opened toward the inside of the main door 4 by the inner diameter side ring 45, the outer diameter side ring 46, and the inner plate 4b (or the inner surface of the tubular rod 4B) of the main door body 4A. It is designed to be provided.

A seal ring 9 for a main door is mounted in the annular groove 47. A retaining piece 48 projecting outward in the radial direction is provided on the opening edge of the inner diameter side peripheral wall surface (outer surface of the inner diameter side ring 45) of the annular groove 47. The retaining piece 48 prevents the main door seal ring 9 from coming out of the annular groove 47.

The main door seal ring 9 has a lip 9a having a shape that protrudes diagonally outward in the radial direction from the annular groove 47.

Then, when the main door 4 is closed, the main door 4 is fitted into the stepped portion 25, and the outer surface of the main door 4 is flush with the outer surface of the flange 22 of the mounting bracket 2. The inner diameter side ring 45 and the outer diameter side ring 46 attached to the ridge portion 24 come into contact with the outer surface of the ridge portion 24, and the lip 9a of the main door seal ring 9 bends to the ridge portion 24. It comes into pressure contact with the outer surface (also referred to as a radial wall surface in the step portion 25).

In this way, when the pressure (external pressure) in the outer space of the master door 4 rises in the state where the master door 4 is closed, the contact pressure (seal surface pressure) of the lip 9a increases.

Further, in the first embodiment, the space between the child door 5 and the main door 4 facing each other is sealed by the child door seal ring 10.

Specifically, the inner diameter side ring 55 and the outer diameter side ring 56 are arranged apart in the radial direction on the outer diameter side (inner flange portion 5e of the frame body 5c) on the inner surface of the child door 5. It is attached to, for example, by welding.

The inner diameter side ring 55, the outer diameter side ring 56, and the inner plate 5b of the child door 5 provide an annular groove 57 that opens toward the inside of the main door 4.

A child door seal ring 10 is mounted in the annular groove 57. A retaining piece 58 projecting outward in the radial direction is provided on the opening edge of the inner diameter side peripheral wall surface (outer surface of the inner diameter side ring 55) of the annular groove 57. The retaining piece 58 prevents the child door seal ring 10 from coming out of the annular groove 57.

The child door seal ring 10 has a lip 10a having a shape that protrudes diagonally outward in the radial direction from the annular groove 57.

Then, when the child door 5 is closed, the child door 5 is fitted into the child door opening 4f of the parent door 4, and the outer surface of the child door 5 is flush with the outer surface of the parent door 4. The inner diameter side ring 55 and the outer diameter side ring 56 attached to the child door 5 come into contact with the outer surface of the ring body 4C of the main door 4, and the lip 10a of the child door seal ring 10 is bent. Then, it comes to be pressed against the outer surface of the ring body 4C of the main door 4.

In this way, when the pressure (external pressure) in the outer space of the child door 5 and the parent door 4 rises in the state where the child door 5 is closed, the contact pressure (seal surface pressure) of the lip 10a increases.

As described above, according to the first embodiment to which the present invention is applied, in order to attach the main door 4 with the child door 5 to the wall portion 1 so as to be openable and closable, the flange 22 of the mounting bracket 2 and the fixing ring 3 are used. The wall portion 1 is sandwiched from the thickness direction, and the mounting bracket 2 and the fixing ring 3 are fixed to the wall portion 1 by joining the inner peripheral edge of the fixing ring 3 to the outer peripheral surface of the mounting bracket 2. ..

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, but the mounting bracket 2 and the fixing ring 3 have sufficient strength for the wall portion 1. Since it can be attached, the main door 4 can be firmly attached.

Further, after the fitting portion between the mounting bracket 2 and the through hole 1a of the wall portion 1 is sealed by the caulking materials 6 and 7 as the sealing member, the main door is sealed by the main door seal ring 9 with the contact type lip 9a. The space between the inner surface of 4 and the outer surface of the ridge portion 24 of the mounting bracket 2 is sealed, and the inner surface of the child door 5 and the outer surface of the ring body 4C are connected by the seal ring 10 for the child door with the contact type lip 10a. Since the space between the facing surfaces is sealed, the watertight parent-child door unit according to the present invention can be ensured with sufficient sealing performance (water stopping property) and safety while having a relatively simple configuration.

Moreover, when the water level on the outside of the main door 4 rises and the pressure acting on the lip 9a of the seal ring 9 for the main door and the lip 10a of the seal ring 10 for the child door increases, the lips 9a and 10a Each contact pressure (seal surface pressure) is increased to improve the sealing performance, and the main door seal ring 9 and the child door seal ring 10 tend to be pressed into the annular grooves 47 and 57. The door seal ring 9 and the child door seal ring 10 are less likely to fall off from the annular grooves 47 and 57.

Further, as in the first embodiment, the main door 4 is fitted into the stepped portion 25 of the tubular portion 21 of the mounting bracket 2 so that the outer surface of the main door 4 is flush with the outer surface of the flange 22 of the mounting bracket 2. At the same time, since the child door 5 is fitted into the child door opening 4f of the parent door 4 so that the outer surface of the child door 5 is flush with the outer surface of the parent door 4, the parent from the outer surface of the wall portion 1 The protrusions of the door 4 and the child door 5 are eliminated. This improves the appearance of the watertight parent-child door unit.

Further, in the first embodiment, when the main door 4 is closed, the lip 9a of the main door seal ring 9 elastically bends and is pressed against the outer surface of the ridge portion 26, so that the main door 4 is pressed with a relatively small force. It becomes possible to close the door 4. Similarly, when the child door 5 is closed, the lip 10a of the child door seal ring 10 elastically bends and is pressed against the outer surface of the ring body 4C of the parent door 4, so that the child door 5 is pressed with a relatively small force. Can be blocked.

The present invention is not limited to the above embodiment, and can be appropriately modified within the scope of the claims and within the scope equivalent to the scope.

(1) FIG. 6 shows a second embodiment of the present invention. In the second embodiment, the tubular portion 21 of the mounting bracket 2 is inserted into the through hole 1a of the wall portion 1 through a predetermined gap, and the flange 22 is inserted into one of the through holes 1a on the outer surface of the wall portion 1. The outer peripheral portion of the above is arranged to face each other via a predetermined gap, and each of the gaps is filled with a water blocking material 8 as a sealing member. Examples of the waterproof material 8 include non-shrink mortar and the like.

An annular piece 22a is provided on the outer periphery of the flange 22 of the mounting bracket 2, and the tip of the annular piece 22a is brought into contact with the outer surface of the wall portion 1. Further, an annular piece 31 is provided on the outer periphery of the fixing ring 3 made of a square annular plate so that the tip of the annular piece 31 comes into contact with the inner surface of the wall portion 1. Further, a reinforcing material 23 is erected between the cylinder portion 21 and the collar 22.

The installation form of the main door 4 and the child door 5, the mounting form of the parent door seal ring 9 and the child door seal ring 10, and other configurations are basically the same as those of the first embodiment. The same actions and effects as those of the first embodiment can be obtained in this second embodiment as well.

(2) FIG. 7 shows a third embodiment of the present invention. In the third embodiment, the annular piece 22a of the collar 22 of the mounting bracket 2 and the annular piece 31 of the fixing ring 3 of the second embodiment are eliminated, and a seal ring 6A as a sealing member is provided on the outer peripheral edge of the collar 22. By providing the seal ring 7A as a sealing member on the outer peripheral edge of the fixing ring 3, 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 respectively. I try to seal it.

The installation form of the main door 4 and the child door 5, the mounting form of the parent door seal ring 9 and the child door seal ring 10, and other configurations are basically the same as those of the first embodiment. The same actions and effects as those of the first embodiment can be obtained in this third embodiment as well.

(3) FIG. 8 shows a fourth embodiment of the present invention. In the fourth embodiment, the water blocking material 8 between the flange 22 of the mounting bracket 2 of the second embodiment and the wall portion 1 facing each other and between the fixing ring 3 and the wall portion 1 is eliminated, and the tubular portion 21 is eliminated. The water blocking material 8 that is filled between the outer peripheral surface and the wall portion 1 is left.

Then, after the collar 22 and the fixing ring 3 are brought into contact with the wall portion 1, a caulking material 6 as a sealing member is provided on the outer peripheral edge of the collar 22 as in the first embodiment, and the fixing ring 3 is provided. By providing a caulking material 7 as a sealing member on the outer peripheral edge of the brim, 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 sealed. ing.

The installation form of the main door 4 and the child door 5, the mounting form of the parent door seal ring 9 and the child door seal ring 10, and other configurations are basically the same as those of the first embodiment. The same actions and effects as those of the first embodiment can be obtained in this fourth embodiment as well.

(4) FIG. 9 shows a fifth embodiment of the present invention. In the fifth embodiment, based on the overall configuration shown in the first embodiment, the main door seal ring 9 is mounted so as to be embedded inside the main door 4, and the child door seal ring 10 is attached to the child door 5. It is installed so that it is embedded inside the door.

Specifically, the thick annular plate 40 is attached so as to be embedded in the inner surface of the main door 4 (the inner surface of the main door main body 4A and the inner surface of the tubular rod 4B). The inner surface of the annular plate 40 is flush with the inner surface of the inner plate 4b.

The annular plate 40 is provided with an annular groove 47 so as to open toward the ridge portion 24 side. A seal ring 9 for the main door is mounted in the annular groove 47. A retaining piece 48 projecting outward in the radial direction is provided on the opening edge of the inner wall surface of the annular groove 47 to prevent the seal ring 9 for the main door from coming out of the annular groove 47.

The lip 9a of the main door seal ring 9 has a shape that protrudes diagonally outward in the radial direction from the annular groove 47 in a state where the main door seal ring 9 is mounted in the annular groove 47.

Then, when the main door 4 is closed, the main door 4 is fitted into the stepped portion 25 so that the outer surface of the main door 4 becomes flush with the outer surface of the flange 22 of the mounting bracket 2, and the main door 4 The inner surface comes into contact with the outer surface of the ridge portion 24, and the lip 9a of the main door seal ring 9 bends and comes into pressure contact with the outer surface of the ridge portion 24.

In this way, when the pressure (external pressure) in the outer space of the master door 4 rises in the state where the master door 4 is closed, the contact pressure (seal surface pressure) of the lip 9a increases.

Further, the inner flange portion 5e (see FIG. 1) of the frame body 5c of the child door 5 is eliminated, and instead, a thick annular plate 50 is fixed to the frame body 5c by welding, for example. The inner surface of the annular plate 50 is flush with the inner surface of the inner plate 5b.

The annular plate 50 is provided with an annular groove 57 so as to open toward the ring body 4C side. A child door seal ring 10 is mounted in the annular groove 57. A retaining piece 58 projecting outward in the radial direction is provided on the opening edge of the inner wall surface of the annular groove 57 to prevent the seal ring 10 for a child door from coming out of the annular groove 57.

The lip 10a of the child door seal ring 10 is shaped so as to protrude radially outward from the annular groove 57 in a state where the child door seal ring 10 is mounted in the annular groove 57.

Then, when the child door 5 is closed, the child door 5 is fitted into the child door opening 4f formed on the outside of the ring body 4C of the parent door 4, and the outer surface of the child door 5 is the outer surface of the parent door 4. The inner surface of the child door 5 comes into contact with the outer surface of the ring body 4C of the main door 4, and the lip 10a of the child door seal ring 10 bends to form the ring body of the main door 4. It comes to be pressed against the outer surface of 4C.

In this way, when the pressure (external pressure) in the outer space of the child door 5 and the parent door 4 rises in the state where the child door 5 is closed, the contact pressure (seal surface pressure) of the lip 10a increases.

Other configurations are basically the same as those of the first embodiment. In addition to obtaining the same operations and effects as those of the first embodiment in this fifth embodiment, the protrusion of the main door seal ring 9 from the inner surface of the main door 4 is eliminated, and the child door seal is eliminated from the inner surface of the child door 5. Since the protrusion of the ring 10 is eliminated, the thickness dimension of the watertight parent-child door unit can be reduced, and the appearance of the watertight parent-child door unit is improved.

(5) FIGS. 10 and 11 show a sixth embodiment of the present invention. In this sixth embodiment, based on the overall configuration shown in the first embodiment, the main door seal ring 9 is mounted so as to be embedded in the ridge portion 24, and the child door seal ring 10 is attached to the main door 4. It is mounted so as to be embedded in the ring body 4C of.

Specifically, the ridge portion 24 is provided with an annular groove 47 that opens toward the main door 4, and a seal ring 9 for the main door is mounted in the annular groove 47. By providing a retaining piece 48 projecting outward in the radial direction at the opening edge of the inner peripheral side peripheral wall surface of the annular groove 47, the seal ring 9 for the main door is prevented from coming out from the annular groove 47.

The lip 9a of the main door seal ring 9 has a shape that protrudes diagonally outward in the radial direction from the annular groove 47 in a state where the main door seal ring 9 is mounted in the annular groove 47.

When the main door 4 is closed, the main door 4 is fitted into the stepped portion 25, and the outer surface of the main door 4 is flush with the outer surface of the flange 22 of the mounting bracket 2. The inner surface comes into contact with the outer surface of the ridge portion 24, and the lip 9a of the main door seal ring 9 bends and comes into pressure contact with the inner surface of the main door 4.

In this way, when the pressure (external pressure) in the outer space of the master door 4 rises in the state where the master door 4 is closed, the contact pressure (seal surface pressure) of the lip 9a increases.

On the other hand, the ring body 4C of the main door 4 is provided with an annular groove 57 that opens toward the child door 5, and the child door seal ring 10 is mounted in the annular groove 57. By providing a retaining piece 58 projecting outward in the radial direction on the opening edge of the peripheral wall surface on the inner diameter side of the annular groove 57, the seal ring 10 for a child door is prevented from coming out from the annular groove 57.

The lip 10a of the child door seal ring 10 is shaped so as to protrude radially outward from the annular groove 57 in a state where the child door seal ring 10 is mounted in the annular groove 57.

Then, when the child door 5 is closed, the child door 5 is fitted into the child door opening 4f of the parent door 4, so that the outer surface of the child door 5 becomes flush with the outer surface of the parent door 4, and the child door becomes flush with the child door 4. The inner surface of the parent door 4 comes into contact with the outer surface of the ring body 4C of the main door 4, and the lip 10a of the child door seal ring 10 bends and is pressed against the inner surface of the child door 5.

In this way, when the pressure (external pressure) in the outer space of the child door 5 and the parent door 4 rises in the state where the child door 5 is closed, the contact pressure (seal surface pressure) of the lip 10a increases.

Other configurations are basically the same as those of the first embodiment. In this sixth embodiment, the same actions and effects as those in the first embodiment can be obtained.

(6) FIGS. 12 and 13 show a seventh embodiment of the present invention. In this seventh embodiment, the configuration of the main door 4 is changed based on the overall configuration shown in the fifth embodiment, and the child door 5 is installed so as to protrude from the outer surface of the main door 4 to the outside. ..

Specifically, the main door 4 shown in the seventh embodiment has a configuration in which an outer plate 4a, an inner plate 4b, a frame body 4c, and a thick annular plate 40 are combined. The outer plate 4a, the inner plate 4b, the frame body 4c, and the annular plate 40 are made of a metal material. The frame body 4c has an L-shaped cross section.

The main door 4 is formed in a horizontally long rectangle, and a vertically long rectangular opening 4f for a child door is provided in the left half region thereof.

The child door opening 4f is composed of a through hole provided in the left half region of the outer plate 4a and the inner plate 4b, and has an inner peripheral edge of the through hole of the outer plate 4a and an inner peripheral edge of the through hole of the inner plate 4b. By fixing the square tube member 4g to the inner peripheral wall of the child door opening 4f, for example, by welding or the like. The child door opening 4f is set smaller than the child door 5 so as to be covered by the child door 5.

In such a seventh embodiment, when the main door 4 is closed, the main door 4 is fitted into the stepped portion 25, and the outer surface of the main door 4 is flush with the outer surface of the flange 22 of the mounting bracket 2. The inner surface of the main door 4 comes into contact with the outer surface of the ridge portion 24, and the lip 9a of the main door seal ring 9 bends and comes into pressure contact with the outer surface of the ridge portion 24.

In this way, when the pressure (external pressure) in the outer space of the master door 4 rises in the state where the master door 4 is closed, the contact pressure (seal surface pressure) of the lip 9a increases.

On the other hand, when the child door 5 is closed, the child door 5 is received by the outer surface of the parent door 4, and the inner surface of the child door 5 comes into contact with the outer surface of the outer plate 4a of the parent door 4. The lip 10a of the child door seal ring 10 bends and comes into pressure contact with the outer surface of the outer plate 4a of the main door 4.

In this way, when the pressure (external pressure) in the outer space of the child door 5 and the parent door 4 rises in the state where the child door 5 is closed, the contact pressure (seal surface pressure) of the lip 10a increases.

The description of other configurations is basically the same as that of the fifth embodiment. In this seventh embodiment, the same actions and effects as those in the fifth embodiment can be obtained.

(7) FIG. 14 shows an eighth embodiment of the present invention. In the eighth embodiment, the configurations of the main door 4 and the child door 5 are changed based on the overall configuration shown in the seventh embodiment, and the child door 5 is projected outward from the outer surface of the main door 4. It is installed.

In the eighth embodiment, the ridge portion 24 is provided with an annular groove 47 that opens toward the main door 4, and the main door seal ring 9 is mounted in the annular groove 47. By providing a retaining piece 48 projecting outward in the radial direction at the opening edge of the inner peripheral side peripheral wall surface of the annular groove 47, the seal ring 9 for the main door is prevented from coming out from the annular groove 47. The lip 9a of the main door seal ring 9 has a shape that protrudes diagonally outward in the radial direction from the annular groove 47 in a state where the main door seal ring 9 is mounted in the annular groove 47.

Further, the main door 4 of the eighth embodiment has a configuration in which an outer plate 4a, an inner plate 4b, a frame body 4c, a square tube member 4g, and a thick annular plate 60 are combined. It is made of metal.

On the inner end side of the square tube member 4g, an outward inner flange portion 4h facing outward in the radial direction is provided. The outward inner flange portion 4h and the inner flange portion 4e of the frame body 4c are fixed to the inner plate 4b by, for example, welding.

An annular groove 57 is provided on the inner diameter side of the annular plate 60 so as to open outward, and a child door seal ring 10 is mounted in the annular groove 57. A retaining piece 58 projecting outward in the radial direction is provided on the opening edge of the inner wall surface of the annular groove 57 to prevent the seal ring 10 for a child door from coming out of the annular groove 57.

The lip 10a of the child door seal ring 10 is shaped so as to protrude radially outward from the annular groove 57 in a state where the child door seal ring 10 is mounted in the annular groove 57.

In such an eighth embodiment, when the main door 4 is closed, the main door 4 is fitted into the stepped portion 25, and the outer surface of the main door 4 becomes flush with the outer surface of the flange 22 of the mounting bracket 2, and the parent The inner surface of the door 4 comes into contact with the outer surface of the ridge portion 24, and the lip 9a of the main door seal ring 9 bends and is pressed against the inner surface of the main door 4.

In this way, when the pressure (external pressure) in the outer space of the master door 4 rises in the state where the master door 4 is closed, the contact pressure (seal surface pressure) of the lip 9a increases.

On the other hand, when the child door 5 is closed, the outer surface of the child door 5 protrudes to the outside of the outer surface of the master door 4, and the inner surface of the child door 5 abuts on the outer surface of the master door 4 (outer surface of the annular plate 60). Then, the lip 10a of the child door seal ring 10 bends and is pressed against the inner surface of the child door 5.

In this way, when the pressure (external pressure) in the outer space of the child door 5 rises in the state where the child door 5 is closed, the contact pressure (seal surface pressure) of the lip 10a increases.

The description of other configurations is basically the same as that of the seventh embodiment. In this eighth embodiment, the same actions and effects as those in the seventh embodiment can be obtained.

(8) FIG. 15 shows a ninth embodiment of the present invention. In this ninth embodiment, the configuration of the main door 4 is changed based on the overall configuration shown in the eighth embodiment, and the child door 5 is configured to open inward with the right side as a fulcrum when viewed from the front. ing.

The main door 4 of the ninth embodiment has a configuration in which an outer plate 4a, an inner plate 4b, a frame body 4c, a square cylinder member 4g, and a thick annular plate 70 are combined, and they are made of a metal material. Is formed of.

On the outer end side of the square tube member 4g, an outward outer flange portion 4i facing outward in the radial direction is provided. The outward flange portion 4i and the outer flange portion 4d of the frame body 4c are fixed to the inner plate 4b by, for example, welding.

An annular groove 57 is provided on the inner diameter side of the annular plate 70 so as to open inward, and a child door seal ring 10 is mounted in the annular groove 57. A retaining piece 58 projecting outward in the radial direction is provided on the opening edge of the inner wall surface of the annular groove 57 to prevent the seal ring 10 for a child door from coming out of the annular groove 57.

The lip 10a of the child door seal ring 10 is shaped so as to protrude radially outward from the annular groove 57 in a state where the child door seal ring 10 is mounted in the annular groove 57.

In such a ninth embodiment, when the main door 4 is closed, the main door 4 is fitted into the stepped portion 25, and the outer surface of the main door 4 becomes flush with the outer surface of the flange 22 of the mounting bracket 2, and the parent The inner surface of the door 4 comes into contact with the outer surface of the ridge portion 24, and the lip 9a of the main door seal ring 9 bends and is pressed against the inner surface of the main door 4.

In this way, when the pressure (external pressure) in the outer space of the master door 4 rises in the state where the master door 4 is closed, the contact pressure (seal surface pressure) of the lip 9a increases.

On the other hand, when the child door 5 is closed, the outer surface of the child door 5 comes into contact with the inner surface of the main door 4 (inner surface of the annular plate 70), and the lip 10a of the child door seal ring 10 bends to the child. It comes to be pressed against the outer surface of the door 5.

In this way, when the pressure (external pressure) in the outer space of the child door 5 rises in the state where the child door 5 is closed, the contact pressure (seal surface pressure) of the lip 10a increases.

The description of other configurations is basically the same as that of the eighth embodiment. In this ninth embodiment, the same actions and effects as those in the eighth embodiment can be obtained.

(9) In the first to ninth embodiments, although not shown, for example, two seal rings may be provided apart from each other in the radial direction.

(10) In the first to ninth embodiments, although not shown, for example, the fixing ring 3 may be fastened to the wall portion 1 with anchor bolts or the like. In that case, it becomes possible to further increase the mounting strength of the watertight parent-child door unit.

(11) In the first to ninth embodiments, the example in which the wheel 11 is attached to the lower portion of the main door 4 is given, but the present invention is not limited to this, and for example, the wheel 11 is used. It is also possible not to attach it.

The present invention can be suitably used for a watertight parent-child door unit.

1 wall
1a through hole 2 mounting bracket
21 Cylinder
22 Tsuba
24 ridges
25 Step 3 Fixed ring 4 Main door
4A parent door body
4B tubular rod
4C ring
4f Child door opening
47 Circular groove 5 child door
57 Circular groove 6,7 Caulking material (sealing member)
9 Seal ring for parent door
9a Lip 10 Seal ring for child door
10a lip

Claims (9)

A watertight parent-child door unit that can be opened and closed in the through hole of the wall.
A mounting bracket having a tubular portion to be inserted into the through hole and having a collar facing the outer peripheral portion of the outer opening of the through hole on the outer surface of the wall portion.
A fixing ring that is fitted onto the outer peripheral surface of the tubular portion of the mounting bracket so as to face the inner surface of the wall portion and the inner peripheral edge is joined to the outer peripheral surface of the tubular portion.
A master door that is attached to the collar via a hinge and has an opening for a child door so that the through hole can be opened and closed.
A child door attached to the parent door via a hinge so that the child door opening of the parent door can be opened and closed,
A sealing member provided between at least one of the cylinder portion and the collar portion and the wall portion, and a sealing member.
A seal ring for a master door that is mounted on either one of the mounting bracket and the master door and for sealing between the mounting bracket and the master door facing each other in a closed state of the master door.
A child door seal ring that is attached to either the child door opening of the parent door or the child door and that seals between the child door opening and the child door facing each other when the child door is closed. And with
The tip of the seal ring for the master door extends diagonally outward in the radial direction, and when the master door is closed, the seal ring bends and is pressed against either the mounting bracket or the master door and is pressed against the outside of the master door. It has a lip that increases the contact pressure when the pressure in the space rises,
The tip of the child door seal ring extends diagonally outward in the radial direction, and when the child door is closed, the child door seal ring bends and is pressed against either the child door opening or the child door, and the child door is pressed against the other. A watertight parent-child door unit characterized by having a lip that increases contact pressure when the pressure in the outer space of the door rises. In the watertight parent-child door unit according to claim 1,
The sealing member is a waterproof material that is filled between the outer peripheral surface of the cylinder portion and the inner surface of the collar and the wall portion, and between the fixing ring and the wall portion. A watertight parent-child door unit featuring. In the watertight parent-child door unit according to claim 1,
The sealing member is provided on the outer peripheral edge of the collar so as to close the space between the flange and the wall so as to be filled between the outer peripheral surface of the cylinder and the wall facing each other. A watertight parent-child door unit comprising a caulking material and a caulking material provided on the outer peripheral edge of the fixing ring so as to close the facing space between the fixing ring and the wall portion. In the watertight parent-child door unit according to any one of claims 1 to 3, the watertight parent-child door unit
A ridge portion that projects inward in the radial direction is provided in the axial intermediate region on the inner peripheral surface of the tubular portion.
An annular groove that opens toward the ridge side is provided on the outer diameter side of the inner surface of the main door.
The master door seal ring is mounted in the annular groove, and the lip of the master door seal ring bends when the master door is closed and is pressed against the outer surface of the ridge portion, and the master door is pressed against the outer surface. A watertight parent-child door unit characterized in that the contact pressure increases when the pressure in the outer space of the door rises. In the watertight parent-child door unit according to any one of claims 1 to 3, the watertight parent-child door unit
A ridge portion that projects inward in the radial direction is provided in the axial intermediate region on the inner peripheral surface of the tubular portion.
The ridge portion is provided with an annular groove that opens toward the main door side.
The master door seal ring is mounted in the annular groove, and the lip of the master door seal ring bends when the master door is closed and is pressed against the inner surface of the master door and is pressed against the inner surface of the master door. A watertight parent-child door unit characterized in that the contact pressure increases when the pressure in the outer space rises. In the watertight parent-child door unit according to any one of claims 1 to 5,
A ring body for receiving the child door is provided on the opening edge of the child door opening of the parent door so as to project inward in the radial direction.
An annular groove that opens toward the ring is provided on the outer diameter side of the child door.
The child door seal ring is mounted in the annular groove, and the lip of the child door seal ring bends when the child door is closed and is pressed against the outer surface of the ring body and is pressed against the outer surface of the child door. A watertight parent-child door unit characterized in that the contact pressure increases when the pressure in the outer space rises. In the watertight parent-child door unit according to any one of claims 1 to 5,
A ring body for receiving the child door is provided on the opening edge of the child door opening of the parent door so as to project inward in the radial direction.
An annular groove that opens toward the child door is provided on the outer diameter side of the ring body.
The child door seal ring is mounted in the annular groove, and the lip of the child door seal ring bends when the child door is closed and is pressed against the inner surface of the child door and is pressed against the inner surface of the child door. A watertight parent-child door unit characterized in that the contact pressure increases when the pressure in the outer space rises. In the watertight parent-child door unit according to any one of claims 1 to 5,
An annular groove that opens toward the outside of the master door is provided on the inner diameter side of the outer surface of the master door.
The child door seal ring is mounted in the annular groove, and the lip of the child door seal ring bends when the child door is closed and is pressed against the inner surface of the child door and is pressed against the inner surface of the child door. A watertight parent-child door unit characterized in that the contact pressure increases when the pressure in the outer space rises. In the watertight parent-child door unit according to any one of claims 1 to 5,
An annular groove that opens toward the inside of the master door is provided on the inner diameter side of the inner surface of the master door.
The child door seal ring is mounted in the annular groove, and the lip of the child door seal ring bends when the child door is closed and is pressed against the outer surface of the child door and is pressed against the outer surface of the child door. A watertight parent-child door unit characterized in that the contact pressure increases when the pressure in the outer space rises.

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