JP2013108344A - Steel door with slave door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a high crime prevention property of a slave door to a master door in a steel door with the slave door, and to improve the usability of the slave door.SOLUTION: A pair of upper and lower rods 87 which are actuated in conjunction with rotary operation of a handle 82 on the indoor side and a key cylinder 83 on the outdoor side of a slave door 3 are made to disengageably engage with rod receivers 88 of a master door 2, and a dead bolt 89 on a door-end-side is made to disengageably engage with a lock retainer 90 of the master door 2, thus achieving a three-point locking of the slave door 3 to the master door 2. Meanwhile, hanging and supporting of the slave door 3 on the master door 2 is performed by strongly energized hinges 5 to automatically close the slave door 3, while the slave door 3 is received and held by a magnet catch 7 of the master door 2 such that a roller latch 6 installed in the slave door 3 does not come off a latch retainer 61 by a reaction. The slave door 3 exhibits an effective crime prevention property in an emergency escape by opening the slave door 3 when the master door 2 is non-openable/non-closable due to an earthquake, and the slave door 3 is prevented from being in a half-opened state for access.

Description

  The present invention relates to a steel door with a child door used for an entrance of an apartment house, for example.

  As a steel door with a child door of this kind, one of the inventors of the present invention suspends and supports the main door and the child door opening of the parent door so as to be openable and closable according to Patent Document 1 below. A steel door with a child door that has a child door that can be locked and unlocked and is urged in the closing direction by a so-called spring hinge has been proposed.

Japanese Patent Application No. 2010-97302

  In this case, since the child door can be opened and closed with respect to the main door, even if the door frame is deformed by the earthquake and the main door cannot be opened or closed, it is possible to escape from the child door to the outside of the room. It can be useful as a front door having a property.

  On the other hand, although patent document 1 does not describe locking of the child door to the parent door, since it is necessary to lock the child door, it is necessary to lock the child door. The locking is to be performed.

  However, when it is necessary to escape using the child door, the parent door cannot be opened and closed, and only the child door can be opened and closed.For crime prevention, including during evacuation, the child door is locked. For example, in the case of prying with a bar or breaking with a cutter, it will be necessary to withstand this sufficiently. This will leave you with security concerns.

  The present invention has been made in view of such circumstances, and the problem to be solved is that it has high crime prevention and can be closed and retained even when the child door is unlocked. The purpose of the present invention is to provide a steel door with a child door that improves the usability at the time of escape as much as possible.

  In accordance with the above-described problems, the present invention is such that the child door can be opened and closed independently of the parent door. The child door is opened by the indoor side handle and the outdoor side key operation with respect to the child door opening of the parent door. Three doors are locked on the top and bottom of the door opening and on the door end side to prevent the child door from opening and entering from the outside by prying or breaking, ensuring high crime prevention and emergency exit The child door can be easily locked, and the child door can be easily closed upon entering and exiting before the locking operation. In other words, the invention according to claim 1 is referred to as the main door. A child door that is supported so as to be openable and closable at a child door opening of the parent door and that can be locked and unlocked with respect to the parent door. Key cylinders and rotation of these handles or key cylinders A pair of upper and lower rods that can be freely attached to and disengaged from the upper and lower surfaces of the main door opening of the main door that are arranged on the sub door in conjunction with the operation, and a lock holder that is disposed on the front door side of the main door. This is done by three-point locking of the detachable sickle lock or dead bolt and the door tip, and it can be projected and retracted by urging one side toward the other side of the child door or the child door opening toward the other side. A steel door with a child door comprising a roller latch detachably attached to the child door opening of the parent door or the other latch receiving end of the child door to hold the child door closed. It is what.

  In addition to the above, the invention according to the second aspect of the present invention allows the child door to be closed before the locking operation so that the automatic closing is surely performed if it is opened without requiring a separate closing operation. While strongly urging the suspension support of the door, it prevents the recoil escape from the latch receiver of the roller latch caused by using the hinge easily and surely to prevent the child door half-opening at the time of emergency exit and In order to eliminate the need for a closing operation and to further improve the usability, the above-described suspension support for the child door is disposed within the expected surface on the child door opening of the parent door and the child door suspension side. The child door is held by a hinge that is urged in the closing direction so that it can be rebounded from the latch receiving of the roller latch so that the child door can be automatically closed, and the child door holding holding that prevents reaction escape from the child door closing impact of the roller latch. Measures It is obtained by a steel door according to claim 1, characterized by comprising subjecting a.

  The present invention uses each of these as the gist of the invention as means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 relates to the child door that can be opened and closed independently of the parent door. By operating the indoor side handle and the outdoor side key to lock the upper and lower sides of the child door opening and the door end side, it is possible to prevent the child door from opening and entering from the outside by prying or breaking. When exiting, the child door can be locked in a lock, and the child door can be easily closed when entering and exiting the locking operation, providing a high degree of crime prevention and also when the child door is unlocked. It is possible to provide a steel door with a child door that can improve the usability at the time of emergency escape as much as possible.

  In addition to the above, the invention according to the second aspect of the present invention allows the child door to be closed before the locking operation so that the automatic closing is surely performed if it is opened without requiring a separate closing operation. While strongly urging the suspension support of the door, it prevents the recoil escape from the latch receiver of the roller latch caused by using the hinge easily and surely to prevent the child door half-opening at the time of emergency exit and Since the closing operation is unnecessary, the usability can be further improved.

It is a perspective view of the indoor side which shows the state which opened the child door of the steel door with a child door. It is a longitudinal cross-sectional view of a steel door with a child door. It is a cross-sectional view of a steel door with a child door. It is explanatory drawing which shows the state of the process from a door steel plate. It is a perspective view which shows the installation state of a roller latch. It is a plane explanatory view showing an outline of a locking device. It is a disassembled perspective view which shows the outline | summary of a locking device.

  The present invention will be described in more detail below with reference to the example of the drawings. A is suspended and supported by the main door 2 and the child door opening 23 of the main door 2 so as to be openable and closable. A steel door with a child door provided with a child door 3 having an inner opening in this example. The steel door with a child door A locks and unlocks the child door 3 with respect to the parent door 2. The handle 82 on the indoor side and the key cylinder 83 on the outdoor side, and the rod receiver 88 on the upper and lower expected surfaces of the child door opening 23 of the parent door 2 arranged on the child door 3 in conjunction with the rotation operation of the handle 82 or the key cylinder 83. A pair of upper and lower rods 87 that can be engaged and disengaged, and a child door opening 23 of the main door 2 and a lock receiver 90 that is disposed on the expected surface of the door end. In this example, the above-mentioned child door 3 or the child door opening 23 is expected to have a door-end side expected surface. The child door 3 can be projected and retracted by urging it toward the other side, so that the child door opening 23 or the child door 3 of the parent door 2, in this example, the door end side of the child door opening 23 is expected. The other side latch receiver 61 is provided with a detachable roller latch 6 to hold the child door 3 closed. In this example, the suspension support of the child door 3 is the main door. In the present example, the hinges are arranged in the prospective surface of the child door opening 23 and the child door 3 and are urged in the closing direction so as to be able to recoil from the latch receiver 61 of the roller latch 6. Is performed by the spring hinge 5 so that the child door 3 can be automatically closed, and the child door receiving and holding measures are taken to prevent the roller latch 6 from recoiling due to the child door closing impact.

  The main door 2 of the steel door A with a child door is equipped with a new door frame for new construction, and is replaced with the existing door using the existing door frame for refurbishment. The steel door A with a child door is provided with a child door 3 suspended and supported by the parent door 2 and its child door opening 23, and is airtight between the inner periphery of the child door opening 23 and the child door 3 outer periphery. Measures are taken.

  In this example, each of the main door 2 and the child door 3 is made of a hollow aggregate 21, 31 formed by bending a steel material that forms the structural material, and a heat insulating or sound insulating material filled between the aggregates 21, 31. It is made of steel with a door thickness of 36 mm or 42 mm provided with filler steel 22 and 32 and all or part of the aggregate 21 and 31 and the door steel plate 4 arranged so as to cover the filler 22. At this time, airtight measures are taken between the main door 2 and the newly installed or existing door frame 1 and between the inner periphery of the child door opening 23 and the outer periphery of the child door 3.

  In this example, the airtight measures between the main door 2 and the new or existing door frame 1 include the outer periphery on the indoor side of the main door 2, including the lower end of the main door 2 and the lower frame of the door frame 1 in this example. In addition, the airtightness is ensured by disposing the outer peripheral stepped portion by the aggregate 21 in contact with the airtight material 11 installed on the door frame 1 toward the outdoor side in the main door 2. The airtight measures between the inner periphery of the child door opening 23 and the outer periphery of the child door 3 of the door 2 are partially or completely mutually on the inner periphery of the child door opening 23 and the outer periphery of the child door 3, respectively. The facing stepped portions by the aggregates 21 and 31 facing each other are arranged, and the airtight material receiving strip 24 is installed integrally or integrally with the aggregate 21 at the opening side end portion of the child door opening 23 of the main door 2. By placing the airtight material 25 on the material receiving strip 24 toward the indoor side, the airtight material 25 is brought into contact with the facing step portion of the aggregate 31 of the child door 3. Te, without exposing the chamber outside the expected direction intermediate position of the child door opening 23 and Kotobira 3, there as to ensure the airtightness by disposing a hermetic material 25. At this time, the outer peripheral stepped portion and the facing stepped portion of the present example are corresponding portions so that the thickness of the aggregates 21 and 31 is reduced, for example, about 1/2 to 1/3 of the door thickness. These are formed by flattening, and the airtight material receiving ridge 24 is formed by bending the steel material of the aggregate 21 to the aggregate 21 on the inner periphery of the child door opening 23. The airtight material receiving strip 24 formed integrally with the aggregate 21 and integrated with the aggregate 21 is formed so as to be substantially flush with the finding of the main door 2.

  In this example, the door steel plate 4 uses two manufacturer-standard indoor and outdoor steel plates having a horizontal width as a standard dimension and a vertical length as a user-specified dimension. As shown in FIG. Through punching and bending, the main door outdoor steel plate 41, the sub door outdoor steel plate 42, the main door indoor steel plate 43, and the sub door indoor steel plate 44 are formed. The door 2 and the child door 3 are substantially covered. At this time, the main door indoor steel plate 41 and the main door indoor steel plate 43 of the two door steel plates 4 inside and outside the door are connected to the main door 2. Of the above-mentioned child door opening 23 is excluded, and the end of the indoor door appearance surface on the side of the child door opening 23 or the vicinity thereof is used in the main door 2, and the child door chamber is used. The outer steel plate 42 covers the outdoor-side finding surface of the child door 3. Ku is as omitting the coating of the expected surface. At this time, in this example, the decorative molding 5, for example, a metallic decorative molding made of aluminum extruded material is arranged at the end of the child door opening 23, and the outer edge of the child door opening 23 is covered, The edge of the main door 2 on the side of the child door opening 23 is covered with the cutting edge accompanying the punching process.

  That is, the door steel plate of the manufacturer standard is generally used for, for example, a double-sided flash door, but when used for a steel door A with a child door, the steel door A with a child door is a child door opening 23 of the parent door 2. As a result of the increase in the covering area for the inner periphery and the outer periphery of the child door 3, the door steel plate 4 having two indoor and outdoor doors may cause a shortage of the standard width dimension (generally 914 mm). By substantially covering the main door 2 and the child door 3 to each other, as in the case of the double-sided flash door, it is assumed that the interior and exterior two door steel plates 4 complete the coating with a good appearance. . At this time, the cosmetic mall 5 is disposed in the child door opening 23 of the main door 2 and is overhanging in the opening 23, for example, overhanging to a width of about 1 cm, so that the child door opening 23 and the child door are arranged. 3, for example, a gap of about 5 mm is covered, and in this example, the outer edge of the child door 3 is covered with the outer peripheral end of the child door 3, and the child door 3 is opened from the outside as the entrance door. It is said that the crime prevention property has been improved so that the appearance of the main door and the door is integrated so that the presence of the door cannot be recognized.

  The hinge for suspending and supporting the child door 3, in this example, the spring hinge 5, is the child door opening 23 of the main door 2 and the end of the child door 3 on the suspension side, It arrange | positions between the facing step parts by the said aggregates 21 and 31 of the door opening 23 and the child door 3, and arrange | positions so that it may be located between the prospective surfaces of these facing step parts.

  At this time, the spring hinge 5 of this example is urged strongly in the closing direction so that the child door can be automatically closed, and the spring hinge is connected to the child door of the main door 2. Although it is possible to arrange a plurality of upper and lower parts, particularly two places, in the expected surface on the suspending side of the opening 23 and the child door 3, in general, the adjustment of the urging force of a commercially available spring hinge may not always be easy. In this case, a sufficient urging force may not be obtained for reliably automatically closing the child door 3, and it is possible to make the urging force stronger. In this example, the spring hinge No. 5 has a plurality of the above-mentioned commercially available ones, particularly three places in the vertical direction, so that automatic closing is reliably performed without applying an excessive load as much as possible to open the child door 3. This kind of child door 3 suitable for There as those of the above-mentioned strong urging. For this reason, in the child door 3 of this example, there is a case where the roller latch 6 between the child door opening 23 of the parent door 2 and the child door 3 comes back from the latch receiver 61 due to the reaction impact of the urging force. As a result, the urging force is such that the reaction escape is possible.

  For this reason, in the steel door A with a child door of this example, the above-mentioned child door catching and holding measures for preventing the recoil escape due to the child door closing impact of the roller latch 6 are taken.

  In this example, the child door holding measure is based on the adsorption of a magnetic material such as a magnet catch or a magnet sheet, and in this example is based on the magnet catch 7. The child door opening 23 or the child door 3 of the parent door 2, in this case, for example, the upper position of the facing step portion of the child door 3 by the aggregate 31 is partially cut out, and the magnet is opened to the child door opening 23 is directed toward the facing step portion of the aggregate 21 in parallel with the airtight material 25 at 23, and the child door 3 is adsorbed by contacting the suction plate directly or fixed to the facing step portion in the closed state of the child door 3. The arrangement is made to hold. The magnet catch 7 is placed on the child door 3 by, for example, placing a back plate (not shown) in the notch portion of the aggregate 31 in the child door 3 and screwing the back plate to the back plate. As a thing.

  In this example, the above-described three-point locking / unlocking with respect to the main door of the child door is performed by the locking device 8, which includes the handle 82 on the child door room inner side and the key on the outdoor side. A cylinder 83, a pair of upper and lower rods 87, a sickle lock or dead bolt, in this example, a dead bolt 89 and a rod receiver 88 that receives the rod 87, and a lock receiver 90 that receives the dead bolt 89 are provided. In this example, the latch receiver 61 that receives the roller latch 6 disposed on the child door 3 is arranged on the upper and lower sides of the lock receiver, in the present example, on the lower side of the lock receiver 90. It is as.

  The pair of upper and lower rods 87 in the locking device 8 of the present example is rotated by the operation of the handle 82 or the key cylinder 83, for example, a crank mechanism, a rack and pinion mechanism, etc. It is possible to project and retract with respect to the rod receiver 88 embedded in the upper and lower expected surfaces of the child door opening 23, that is, the indoor-side expected surface of the facing step portion, and the rod receiver 88 can be freely engaged and disengaged. It is intended to lock and unlock. The crank mechanism 85 of this example includes a rotating plate 86 that rotates in conjunction with the operation of the handle 82 or the key cylinder 83, and a rod 87 that moves up and down in response to the rotation of the rotating plate 86. And the rod 87 are provided with links interposed between them so that they can be freely locked and unlocked at two positions above and below the child door opening 23 of the rod 87.

  Further, in the present example, a sickle lock or dead bolt installed on the front side of the child door 3 together with locking and unlocking of the pair of upper and lower rods 87 by operating the handle 82 or the key cylinder 83 on the outdoor side, The dead bolt 89 can be freely engaged with and disengaged from the lock 90 of the door opening 23 on the door opening 23 of the main door 2, and in addition to the two locking and unlocking of the rod 87, one door edge on the expected surface It is intended to lock and unlock.

  In this way, the child door 3 is firmly and securely locked to the main door 2 by performing the three-point locking in total of three places, the upper and lower two places by the rod 87 and one place by the sickle lock or the dead bolt 89. Thus, the crime prevention property of the child door 3 can be secured at a high level.

  In the figure, 10 is a main door locking device that is installed on the prospective surfaces of the door frame 1 and the main door 2 to perform daily locking and unlocking, 45 is an opening of the child door at the door steel plate processing stage, 46 is a prospective surface that is formed on each steel plate in the processing stage of the door steel plate 4 and covers the prospective surface following the finding surface, except for the child door room outer steel plate 42 in which the coating of the prospective surface is omitted in this example. A covering piece 84 indicates a lock case that houses a mechanism portion such as a crank mechanism 85 of the locking device of the child door 3.

  The illustrated example is as described above. However, the steel door with the child door, the parent door, the child door opening, the child door, the door steel plate for the outdoor and indoor covering, the handle, the key cylinder, the rod holder, the rod, the lock Receptor, sickle lock or dead bolt, latch receiver, roller latch, force biased hinge to be used as needed, measures for holding and holding the child door, etc. Can be in various forms as long as they do not contradict the gist of the invention.

A Steel Door with Child Door 1 Door Frame 11 Airtight Material 2 Parent Door 21 Aggregate 22 Filler 23 Child Door Opening 24 Airtight Material Receptor 25 Airtight Material 26 Cosmetic Mall 3 Child Door 31 Aggregate 32 Filler 4 Door Steel Plate 41 Steel plate for main door room 42 Steel plate for child door room 43 Steel plate for main door room 44 Steel plate for child door room 45 Child door opening 46 Covering surface covering piece 5 Spring hinge 6 Roller latch 61 Latch receiver 7 Magnet catch 8 Locking device 81 Handle Case 82 Handle 83 Cylinder 84 Lock case 85 Crank 86 Rotating plate 87 Rod 88 Rod receiver 89 Dead bolt 90 Lock receiver 10 Parent door locking device

Claims (2)

  A main door and a child door that is hangably supported by the child door opening of the parent door and that can be locked and unlocked with respect to the parent door are provided. And a pair of upper and lower rods that can be freely engaged with and disengaged from a rod receiver on an upper and lower expected surface of the child door opening of the parent door that is arranged on the child door in conjunction with the rotation operation of the handle or the key cylinder. One of the above-mentioned child doors or the door opening side projection surface of the child door opening is performed by three-point locking of the sickle lock or dead bolt which is detachably engageable with the lock placed on the door opening side door opening side of the door. In addition, it is possible to project and retract by energizing it toward the other side, and it is provided with a roller latch that can be freely engaged with and disengaged from the child door opening of the parent door or the door side side expected surface of the child door, and the child door is closed and held. A steel door with a child door.   The suspension support of the child door is arranged within the expected opening surface of the child door opening of the parent door and the child door suspension side, and the hinge is strongly biased in the closing direction to the extent that it can be recoiled from the latch receiving of the roller latch. The steel door according to claim 1, wherein the child door is automatically closed and the child door receiving and holding measures are taken to prevent the roller latch from recoiling due to a child door closing impact. .

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