JP5159838B2 - Fire prevention post entrance at the entrance door - Google Patents

Description

  The present invention relates to a technical field of a fire prevention post port in an entrance door provided in an apartment house or the like.

  Generally, in entrance doors provided in apartment houses, etc., newspapers inserted from the outside are provided by opening openings at appropriate positions of the door body, and providing post openings with openable lids at the openings. There is something that can receive distribution items such as mail from the indoor side. In such a thing, the post port is an aggregate provided within the door thickness of the four rounds of the opening, a pair of indoor and outdoor frame bodies respectively provided at the peripheral edge inside and outside the opening, and these Each frame body is swingably provided and is configured with indoor and outdoor lid bodies that open and close the opening both indoors and outdoors, and each indoor and outdoor frame body abuts the indoor and outdoor of the opening. The frame body is fastened with a plurality of screws in a state of sandwiching the peripheral edge of the opening, so that both frame bodies are fixed to the peripheral edge of the opening in a sandwiched manner. In this way, indoor and outdoor lids individually open and close the opening to allow the distribution material to be inserted into the indoor side, while preventing indoors and outdoors from communicating, heat insulation and sound insulation Is prevented from being damaged.

Japanese Utility Model Publication 3-21665 Japanese Patent No. 3927191

  However, as described above, each of the conventional devices has a configuration in which the frame bodies are fixed to the peripheral edge portion of the opening by clamping the screws. For this reason, if one of the frame bodies inside or outside is formed of a material having no fire resistance, and one of the frame bodies is burned off due to the occurrence of a fire or the like, tightening with a screw with the other frame body is performed. It is cancelled | released and the pinch-like fixation to an opening part peripheral part is canceled. If it becomes like this, since the other frame body will drop from an opening part and the opening part opened in the door body will be in the state which connects indoors and the outdoors, it cannot be made into a fireproof specification even if the door body is made of steel. Therefore, when the door body provided with the post port of the conventional configuration is to be fireproof, both frame bodies of the post port must be formed using a steel material having fire resistance performance. There is a problem that the material cannot be freely selected, and this is a problem to be solved by the present invention.

The present invention has been created in order to solve these problems in view of the above-described circumstances, and the invention of claim 1 provides a post opening provided in an opening provided in a door body. In the door thickness of the four rounds, steel aggregate provided along the indoor and outdoor face plate of the door body, a pair of indoor and outdoor frame bodies provided at the indoor and outdoor peripheral edge of the opening, and each of these Each of the frame bodies is provided with a swingable structure, and each of the indoor and outdoor lid bodies that opens and closes the opening portion indoors and outdoors. The indoor frame body and the indoor lid body are made of steel. And the outdoor frame body are fastened with a plurality of first screws in a state of sandwiching the peripheral edge portion of the opening to fix both frame bodies to the peripheral edge of the opening, and the indoor frame body and the aggregate Use the second screw in at least two places A fire post openings in the front door, characterized in that a structure for fixing Te.
The invention according to claim 2 is characterized in that the indoor frame body and the aggregate by the second screw are fixed at two places sandwiching the opening portion between them. It is.
In the invention of claim 3, the two screws are fixed at two positions sandwiching the opening between the indoor frame body and the aggregate at the same position in the left-right direction of the opening when the second screw has two upper and lower positions. The fire-proof post port in the front door according to claim 2, wherein when the left and right positions are fixed, the opening is fixed at the same position in the vertical direction of the opening.
The invention according to claim 4 is characterized in that the second screw for fixing the indoor frame body and the aggregate is exposed from the indoor lid body in the closed posture. The fire prevention post port in the entrance door according to claim 1.
The invention of claim 5 is characterized in that urging ammunition for holding the indoor lid body 6 in a closed position is provided at two places on the left and right sides or two places on the top and bottom sides of the second screw. It is a fire prevention post mouth in the entrance door of Claim 3 or 4.

According to the first aspect of the present invention, the outdoor frame body and the outdoor lid body can prevent the indoor frame body from falling off in the event of a fire and can make the post port fireproof. The material can be freely selected.
According to the invention of claim 2 or 3, it is possible to more reliably prevent the indoor frame body from falling off due to a fire, and to improve the fireproof specification.
By setting it as invention of Claim 4, the maintenance of the closed state of an opening part becomes more reliable, and fireproof performance can be improved.
According to the invention of claim 5, since the urging force works over a wide range, it is possible to more reliably maintain the closed state of the opening and to further improve the fireproof performance.

It is a perspective view of the principal part in 1st embodiment. 2A and 2B are a front view and a side view, respectively, from the indoor side of the post port in the first embodiment. 3A, 3B, and 3C are respectively a front view of the aggregate in the first embodiment, an XX sectional view of FIG. 3A, and a YY section of FIG. 3A. FIG. FIGS. 4A, 4B, and 4C are respectively a front view, a bottom view, and a rear view from the indoor side for explaining the configuration of the indoor frame body and the indoor lid body in the first embodiment. is there. 5 (A), (B), (C), and (D) are a front view and a bottom view from the outdoor side for explaining the configuration of the outdoor frame body and the outdoor lid body in the first embodiment, respectively. FIG. 4 is a rear view and a side view. It is XX sectional drawing in FIG. 2 (A). FIGS. 7A and 7B are a front view and a partial cross-sectional side view, respectively, from the indoor side of the post port in the second embodiment. FIGS. 8A, 8B, 8C and 8D are a front view and a bottom view from the indoor side for explaining the configuration of the indoor frame body and the indoor lid body in the second embodiment, respectively. FIG. 4 is a rear view and a side view. It is XX sectional drawing in FIG. 7 (A).

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a door body constituting an entrance door of an apartment house, and the door body 1 is formed between a pair of indoor and outdoor face plates 1a and 1b made of steel and between the indoor and outdoor face plates 1a and 1b. And a core material (for example, a paper core) 1c interposed between the two and configured as a fire door having a fire prevention function. A laterally long rectangular opening H is opened at an appropriate location (lower part) of the door body 1 in a state of penetrating indoors and outdoors, and a post port P in which the present invention is implemented is provided in the opening H. It is provided, and it is comprised so that distribution things, such as a newspaper and a mail, inserted from the outdoor side of the door body 1 can be inserted indoors.
Reference numeral 2 denotes a post receiving case provided on the indoor side of the door body 1 so as to accommodate a distribution object inserted into the post port P. The post receiving case 2 is attached to the indoor face plate 1a of the door body 1. A case main body 2a to be fixed and an opening / closing body 2b that is swingably connected to a lower portion of the case main body 2a and opens and closes the lower portion of the case main body 2a. The opening / closing body 2b is configured to open the opening / closing body 2b and to take out the distribution material inserted into the case body 2a by operating the lock 2c and pulling it toward the indoor side. .

Aggregates constituting the post port P are incorporated in the door thickness that forms four rounds of the opening H of the door body 1. As shown in FIG. 3, the aggregate is constituted by integrally connecting a pair of upper and lower horizontal aggregates 3 and a pair of left and right vertical aggregates 4 in a square shape. Each of the aggregates 3 and 4 is formed in a C shape including a pair of leg pieces 3a and 4a and connecting pieces 3b and 4b for connecting the leg pieces 3a and 4a by bending a flat steel material. ing. When the aggregates 3 and 4 are assembled in the opening H, the connecting pieces 3b and 4b cover the core material 1c facing the opening H, and the connecting pieces 3b and 4b constitute the four peripheral edges of the opening H. Is configured to do. Moreover, each leg piece 3a, 4a of each aggregate 3, 4 is comprised so that it may be in the state which follows each inner side surface of the indoor outer surface board 1a, 1b of the door body 1. FIG. Furthermore, at the opening H side (inner side) portion of the upper and lower horizontal aggregates 3, the door thickness is reduced by notching the corner portions of the leg pieces 3 a and the connecting pieces 3 b at two left and right places (four places for convenience). A notch recess 3c penetrating in the direction is formed. Furthermore, at the opening H side (inner side) portion of the left and right vertical aggregates 4, the door thickness is reduced by notching the corner portions of the leg pieces 4 a and the connecting pieces 4 b at one upper and lower portions (convenient two places). A notch recess 4c penetrating in the direction is formed.
In addition, the opening H opened in the door body 1 is formed by cutting the indoor / outer surface plates 1a and 1b and the core material 1c facing the notch recesses 3c and 4c of the horizontal and vertical aggregates 3 and 4, respectively. The notch recesses 3c and 4c are notched so as to communicate with each other, whereby the opening H is configured to be formed with recesses R that are retracted from the peripheral edge outward in the left-right direction and outward in the vertical direction. Yes.

An indoor frame body 5 made of a steel material and an indoor lid body 6 for opening and closing the opening formed in the indoor frame body 5 are provided at the indoor peripheral edge of the opening H. ing.
As shown in FIG. 4, the indoor frame body 5 is formed in a rectangular plate-like square frame that is vertically and horizontally sandwiched between the opening H by forming an opening substantially in the same shape as the opening H at the center. The indoor base piece 5a formed is provided. A pair of upper and lower upper and lower rib pieces 5b protruding toward the outdoor side are bent at the inner edge portions of the upper and lower frames of the indoor base piece 5a. Furthermore, a pair of left and right rib pieces 5c that protrude toward the outdoor side are integrally fixed to the left and right inner edge portions of the left and right frames of the indoor base piece 5a. Then, when the indoor base piece 5a is abutted from the indoor side to the indoor face plate 1a at the peripheral edge of the opening H, as shown in FIG. 6, the upper and lower rib pieces 5b and the left and right rib pieces 5c each have an opening H. It is configured so as to be fitted into the opening H along the horizontal aggregate connecting piece 3b and the vertical aggregate connecting piece 4b to be configured, and the insertion tip portion reaches the middle portion in the door thickness direction. Further, the indoor base piece 5a has vertical and horizontal aggregates 3 and 4 that are opposed to the notch recesses 3c and 4c, that is, at six convenient locations, ie, left and right end portions in the upper and lower portions and an intermediate portion in the vertical direction in the left and right portions. Positioned, the first screw insertion holes 5d are respectively opened. Furthermore, the 2nd screw penetration hole 5e is each opened in the two places of the center part of the left-right direction in the up-and-down site | part of the indoor base piece 5a.
Furthermore, the upper part of the indoor base piece 5a is formed with a mounting piece 5f that is located at the center and protrudes upward, and a pair of left and right ends of the mounting piece 5f that protrude toward the indoor side. Each of the support pieces 5g is bent.

  The indoor lid body 6 is formed in a flat plate shape, and is formed in a shape that covers the opening of the indoor frame body 5 (opening H surrounded by the indoor frame body 5). A pair of projecting pieces 6a projecting upward are formed at two places in the left and right direction of the upper portion of the indoor lid body 6, and these projecting pieces 6a are formed on a pair of indoor base pieces 5a. It is comprised so that it may adjoin to the left-right edge part of the attachment piece 5f from the left-right direction outer side, respectively. A support receiving piece 6b stacked on the support piece 5g protruding from the attachment piece 5f is bent at the inner end in the left-right direction of each of the protrusions 6a so as to protrude toward the indoor side. The indoor lid body 6 is swingably connected to the indoor frame body 5 by pivot pins 7 that pass through the pair of support pieces 5g and the pair of support receiving pieces 6b. . Further, an energizing ammunition 7a is fitted on the pivot pin 7, and one end of the energizing ammunition 7a is fixed to the mounting piece 5f, and the other end of the energizing ammunition 7a is an indoor lid. 6 is pressed from the indoor side. As a result, the indoor lid body 6 is pressed against the indoor frame body 5 and biased to a closed posture in which the opening H is closed, and is configured to hold the indoor lid body 6 in the closed posture. And the indoor cover body 6 is comprised so that it may become an open attitude | position against the urging | biasing force of the urging | biasing ammunition 7a, when the load pressed from the outdoor side acts.

On the other hand, an outdoor frame body 8 made of an aluminum material and an outdoor lid body 9 for opening and closing the opening formed in the outdoor frame body 8 are provided at the peripheral edge portion on the outdoor side of the opening H. It has been.
As shown in FIG. 5, the outdoor frame body 8 is configured to include an outdoor base piece 8 a formed in a flat plate-like square frame in which an opening having substantially the same shape as the opening H is formed. . A lateral aggregate connecting piece forming an opening H is integrally formed with square cylindrical first and second rib pieces 8b and 8c projecting indoors at the frame inner edge of the outdoor base piece 8a. 3b, it is configured to fit within the door thickness of the opening H along the vertical aggregate connecting piece 4b. Said 1st, 2nd rib piece 8b, 8c is formed in the step shape in the inside / outside direction of a cylinder hole, and the cylinder outer side is comprised by the 1st rib piece 8b, and the cylinder inner side is comprised by the 2nd rib piece 8c.

Then, when the outdoor base piece 8a is abutted from the outdoor side against the outdoor face plate 1b at the peripheral edge of the opening H, as shown in FIG. 6, the first rib 8b on the outer side of the cylinder is fitted in the middle portion in the door thickness direction. Thus, the indoor frame body 5 is formed to have a length that is in a positional relationship so as to face and oppose the upper and lower rib pieces 5b and 5c in the door thickness direction. The second rib 8c on the inner side of the cylinder is formed long toward the indoor side so as to be stacked inside the upper and lower and left and right rib pieces 5b and 5c. Further, the outdoor base piece 8a has a portion facing the first screw insertion hole 5d formed in the indoor base piece 5a, that is, right and left end portions in the upper and lower portions and an intermediate portion in the vertical direction in the left and right portions. A cylindrical screw receiving body 8d in which screw grooves are formed is formed so as to project toward the indoor side. The six screw receivers 8d communicate with the cutout recesses 3c and 4c of the vertical and horizontal aggregates 3 and 4 and are formed so as to be retracted from the opening H in the left-right direction and the vertical direction. The screw receiving body 8d is configured not to protrude into the opening H by being fitted into the recess R in a loose fit.
Further, the outdoor frame body 8 is formed with a support piece 8e which is located at the upper end of the outdoor base piece 8a and protrudes forward. The support piece 8e has a predetermined gap in the left-right direction. It is divided into two.

  The outdoor lid body 9 has an outer shape that can cover the opening of the outdoor frame body 8 (opening H surrounded by the outdoor frame body 8). By stacking, a box-shaped hood body that covers the opening H is formed. The outdoor lid body 9 includes a hood main body portion 9a formed in substantially the same shape as the outer shape of the outdoor frame body 8, and side piece portions 9b projecting indoors from the four peripheral edges of the hood main body portion 9a. In the upper side piece 9b, swinging pieces 9c protruding upward are formed at two locations with an appropriate interval in the left-right direction. The outdoor lid body 9 is configured such that the two swing pieces 9c are fitted between the support pieces 8e on the outdoor base piece 8a of the outdoor frame body 8, and the pivot pin 10 is swung with the support piece 8e. The outdoor lid body 9 is configured to open and close in the vertical direction on the outdoor side of the outdoor frame body 8 by penetrating through the moving piece 9a.

  The outdoor lid 9 configured in this manner swings downward by its own weight and assumes a closed posture, so that the indoor-side end face of the side piece 9b is outside the four rounds of the opening H. It is comprised so that it may contact | abut to the outer side part of this, and the opening part H may be plugged up. As a result, the opening H is reliably covered with the outdoor lid body 9, and no gap is formed between the outdoor frame body and the outdoor lid body as in the prior art. It can be improved, and even when strong wind blows from the outdoor side, there is no problem that the gap becomes large, so that noise generated by the gap formed in the opening can be prevented. It is configured. Further, the outdoor lid body 9 in the closed posture is gripped by using the concave portion 9d formed on the lower surface of the outdoor lid body 9 as a handle, and is swung upward as indicated by a virtual line in FIG. 5D. In this state, the opening H is exposed to the outdoor side, and a distribution material such as a newspaper or mail can be inserted into the opening H in this state. In this case, the outdoor lid body 9 is large enough to be closed at the outer periphery of the opening H to ensure heat insulation and soundproofing performance, but the weight of the outdoor lid body 9 is reduced by using aluminum. The opening / closing operation of the outdoor lid body 9 is smooth and light.

  The indoor / outdoor frame bodies 5 and 8 are respectively brought into contact with the indoor outer surface plates 1a and 1b at the peripheral edge of the opening H, and the first screw insertion holes 5d formed at six convenient locations of the indoor frame body 5. The first screw 11 of the present invention is inserted into each of these, the first screw 11 is screwed into the screw receiving body 8d of the outdoor frame body 8, and the horizontal and vertical aggregates 3 positioned at the peripheral edge of the opening H are respectively inserted. The indoor and outdoor frame bodies 5 and 8 are configured to be fixed to the door body 1 (periphery of the opening H) by tightening the four leg pieces 3a and 4a. In this case, the connecting portion between the indoor / outdoor frame bodies 5 and 8 by the first screw 11 is positioned not at the inside of the opening H but at the peripheral portion, and the conventional connecting portion is located inside the opening H. Like what protrudes, it is comprised so that the trouble that a distribution thing may be caught in a connection part and it becomes difficult to insert is eliminated.

  In this way, the post port P is fixed in a sandwiched manner to the peripheral edge of the opening H by fastening the frame bodies 5 and 8 for indoor and outdoor with the first screw 11. The indoor frame body 5 formed of steel is further screwed and fixed at two locations on the leg pieces 3 a of the upper and lower horizontal aggregates 3 formed of steel using the second screw 12. That is, the second screw insertion holes 5e at the upper and lower portions of the indoor base piece 5a are opposed to the leg pieces 3a of the upper and lower horizontal aggregates 3, and the second screws 12 ( The indoor base piece 5a and the leg piece 3a are integrated by screwing a tapping screw) into the leg piece 3a. As a result, the indoor frame body 5 and the horizontal aggregate 3, both of which are made of steel, are screwed in two places at the top and bottom, and the aluminum outdoor frame body 8 and the lid body 9 are burned down (dropped off). E) Even if the pinching-like fixing to the periphery of the opening H based on the tightening of the first screw 11 is eliminated, the indoor frame body 5 is fixed to the steel horizontal aggregate 3 via the second screw 12. The state where the opening H is closed by the indoor lid body 6 is maintained, and the fireproof performance can be exhibited.

  In the first embodiment of the present invention configured as described above, the post port P provided in the door body 1 can be freely opened and closed to the indoor and outdoor frame bodies 5 and 8 and the frame bodies 5 and 8. The indoor / outdoor frame bodies 5 and 8 are fastened to each other by the first screw 11 so that the frame bodies 5 and 8 are attached to the peripheral portion of the opening H. It can be fixed in a pinched form. In this structure, the indoor frame body 5 and the indoor lid body 6 are formed of a steel material having fireproof performance that does not burn off in the event of a fire, and the indoor frame body 5 is attached to the horizontal aggregate 3. Since it is screwed using the two screws 12, the outdoor frame body 8 and the outdoor lid body 9 are made of aluminum having low fireproof performance, and the outdoor frame body 8 and the outdoor lid body 9 are burned in the event of a fire. The state in which the opening H is closed by the indoor lid 6 even if it is dropped and the pinching-like fixing of the indoor / outdoor frame bodies 5, 8 based on the first screw 11 to the peripheral edge of the opening H is canceled. As a result, by providing such a post port P in the steel door body 1, it is possible to achieve fire prevention specifications. Thus, in forming the post port having fireproof performance, it is not necessary to limit the materials of the outdoor frame body 8 and the outdoor lid body 9 to those having fireproof performance, and the degree of freedom in selecting these materials Therefore, even when the shape of the outdoor lid body 9 is increased to increase the heat insulation and sound insulation, it is possible to use a lighter material, improve the functionality of the post port P, and improve the design. We can expect improvement.

In addition, in this structure, the indoor frame body 5 and the aggregate are obtained by screwing the second screw 12 into the second screw insertion hole 5e provided in the indoor base piece 5a at two locations above and below with the opening H interposed therebetween. 3 is integrally screwed so that when the indoor frame body 5 is deformed by receiving heat in a fire, the deformation of the indoor frame body 5 is a deformation sandwiching the opening H between the two, It is difficult to form a gap between the indoor frame body 5 and the peripheral edge of the opening H or the indoor face plate 1a, and further, it is difficult to form a gap between the indoor frame body 5 and the indoor lid body 6. Fire resistance is improved.
In addition, since the fixing position by the upper and lower second screws 12 is the same position in the left-right direction of the indoor frame body 5 and the center position in the left-right direction, the deformation of the indoor frame body 5 due to heat is second. The deformation in the left-right direction with respect to the screw 12 is almost the same, making it difficult to form a gap and improving the fireproof performance.

  By the way, as for the conventional thing, since the connection part which connects both frame bodies integrally is provided in the space inside the opening part opened in a door body, it will be in the state where a connection part protrudes in an opening part, and is connected. There is a problem that it may be difficult to insert a newspaper or other distribution material in the department. However, in the case where the present invention is implemented, the indoor and outdoor frame bodies 5 and 8 are connected to each other by the first screw 11 at the periphery of the opening H. It is possible to prevent a problem that the distribution object is caught by the connecting portion and becomes difficult to insert like the conventional one protruding inward.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, the door body 1, the post receiving case 2, the horizontal aggregate 3, the vertical aggregate 4, the outdoor frame body 8, the outdoor lid body 9, the pivot pin 10, the first screw 11, the first screw Since the same thing as 1st Embodiment can be used for the two screws 12 and the opening part H, description is abbreviate | omitted.

An indoor frame body 105 made of steel and an indoor lid body 106 that opens and closes the opening formed in the indoor frame body 105 are provided at the indoor peripheral edge of the opening H of the door body 1. Is provided.
As shown in FIG. 8, the indoor frame body 105 includes an indoor base piece 105a formed in a flat plate-like substantially square frame having an opening substantially the same shape as the opening H at the center. It is configured. An upper protrusion 105j is formed at the upper end of the indoor base piece 105a at a position corresponding to an upper first screw insertion hole 105h described later. Further, a lower protrusion 105k corresponding to a lower first screw insertion hole 105i and a second screw insertion hole 105e, which will be described later, is extended and formed at the lower end of the indoor base piece 105a. The second screw 12 screwed into the screw insertion hole 105e does not overlap the indoor lid body 106, and the screw head of the second screw 12 is exposed from the indoor lid body 106 to the indoor side.
Further, the indoor base piece 105a is provided with an upper and lower rib piece 105b and a left and right rib piece 105c, which can be the same as those in the first embodiment, and the description thereof is omitted. .
Further, the indoor base piece 105a is provided at the upper first screw insertion hole 105h at the six positions convenient to the notch recesses 3c and 4c of the vertical and horizontal aggregates 3 and 4, that is, at the left and right ends of the upper part. However, lower first screw insertion holes 105i are formed at the left and right ends of the lower part, and two left and right first screw insertion holes 105d are formed at the middle part in the vertical direction of the left and right parts. Further, second screw insertion holes 105e are respectively provided at two locations in the central portion in the left-right direction in the upper and lower portions sandwiching the opening H of the indoor base piece 105a.
Furthermore, the upper part of the indoor base piece 105a is formed with mounting pieces 105f that are located at the center and project upward. A pair of left and right ends of the mounting piece 105f project toward the indoor side. Each of the support pieces 105g is bent.

The indoor cover body 106 is formed in a flat plate shape, and is formed in a shape that covers the opening of the indoor frame body 105 (the opening H surrounded by the indoor frame body 105). A pair of projecting pieces 106a projecting upward are formed at two locations in the left-right direction on the upper portion of the indoor lid body 106, and these projecting pieces 106a are formed on a pair of indoor base pieces 105a. The mounting piece 105f is configured to be adjacent to the left and right ends from the outside in the left-right direction. A support receiving piece 106b stacked on a support piece 105g protruding from the attachment piece 105f is bent at the inner end in the left-right direction of each of the protrusion pieces 106a so as to protrude toward the indoor side. Further, a concave portion 106c formed by cutting out a portion corresponding to the second screw insertion hole 105e at a position corresponding to the second screw insertion hole 105e on the upper side of the indoor piece 105a on the upper end of the indoor lid body 106. The second screw 12 screwed into the second screw insertion hole 105 e does not overlap with the indoor lid body 106, and the screw head of the second screw 12 can be removed from the indoor lid body 106. It is exposed inside.
The indoor lid body 106 is swingably connected to the indoor frame body 105 by a pivot pin 107 that penetrates the pair of support pieces 105g and the pair of support receiving pieces 106b. . In this state, the indoor lid body 106 is configured to maintain a closed posture in which the opening H is closed by its own weight.
Further, urging ammunition 107a is externally fitted to the pivot pin 107 at two positions outside the second screw insertion hole 105e in the left-right direction, and one end of the urging ammunition 107a is attached to the attachment piece 105f. The other end is pressed against the indoor lid 106 from the indoor side. As a result, the indoor lid body 106 is pressed against the indoor frame body 105 and biased to a closed posture that closes the opening H, so that the indoor lid body 106 can be held in a more reliable state. It is configured. The indoor lid body 106 is configured to be in an open posture against the urging force of the urging ammunition 107a when a load pressed from the outdoor side acts.
In addition, in the second embodiment, the urging ammunition 107a is provided at two positions on the left and right sides outside the second screw insertion hole 105e, and therefore the urging force that urges the indoor lid body 106 to the closed posture is provided. The indoor lid 106 is configured to be more surely held in the closed posture by being distributed substantially evenly to the left and right.

  The post port P is fixed to the peripheral edge of the opening H by fastening the frame bodies 105, 8 for indoor and outdoor with the first screw 11, but this fixing is performed in the first embodiment. Since it is the same as the embodiment, the description is omitted.

The indoor frame body 105 is further screwed and fixed at two locations on the leg pieces 3 a of the upper and lower horizontal aggregates 3 formed of steel using the second screw 12. That is, the second screw insertion holes 105e in the upper and lower portions of the indoor base piece 105a are opposed to the leg pieces 3a of the upper and lower horizontal aggregates 3, and the second screws 12 screwed through the second screw insertion holes 105e. The indoor base piece 105a and the leg piece 3a are integrated by screwing a (tapping screw) into the leg piece 3a.
As described above, the indoor frame body 105 and the horizontal aggregate 3 which are both made of steel are screwed together in two places at the top and bottom, so that the aluminum outdoor frame body 8 and the lid body 9 are burned by fire. Even if the fallen (dropped off) fixing of the pinched shape to the peripheral portion of the opening H based on the tightening of the first screw 11 is canceled, the indoor frame body 105 is made of the horizontal side made of steel via the second screw 12. Since it can be maintained in a state fixed to the aggregate 3, the state in which the opening H is closed by the indoor lid 106 is maintained, and the fireproof performance can be exhibited.
Furthermore, in the second embodiment, the upper second screw 12 is located at a position corresponding to the indoor lid body recess 106 c, and the lower second screw 12 is located below the lower end portion of the indoor lid body 106. The head of the second screw 12 and the indoor lid body 106 do not overlap with each other so that they do not interfere with each other. The indoor lid body 106 does not come into contact with the indoor lid body 106 and floats with respect to the indoor frame body 105 to form a gap, and an opening formed by the indoor lid body 106 and the indoor frame body 105 does not occur. The portion H is more reliably closed, and the fire prevention performance can be further exhibited.

In the second embodiment configured as described, the indoor frame body 105 is screwed to the horizontal aggregate 3 using the second screw 12, but the upper second screw 12 is an indoor lid body. The lower second screw 12 is to be screwed into the recessed portion 106c into the portion below the lower end edge of the indoor lid body 106 so as to be exposed from the indoor lid body 106 in the closed position. The second screw 12 and the indoor lid 106 do not interfere with each other. As a result, the indoor frame body 105 and the indoor lid body 106 close the opening H in a contact state with almost no gap, and prevent similar burning through the gap in the opening H in the event of a fire. be able to.
Furthermore, the outdoor frame body 8 and the outdoor lid body 9 are burned down by a fire, and the pinned fixing to the peripheral edge of the opening H between the indoor and outdoor frame bodies 105 and 8 based on the first screw 11 is eliminated. Even so, since the indoor frame body 105 is screwed to the aggregate 3, the state where the opening H is closed by the indoor lid body 106 can be maintained, and fire resistance is improved.
In addition, in this configuration, since the biasing ammunition 107a is provided on both sides in the left-right direction with the upper second screw 12 interposed therebetween, the biasing ammunition 107a biases the indoor lid body 106 to the closed posture. Are distributed to the left and right, and the urging force is exerted over a wide range so that the left and right are balanced. Therefore, the indoor frame body 105 and the indoor lid body 106 can maintain a contact state with almost no gap. Thus, it is possible to more reliably maintain the closed state of the opening H.
Moreover, the indoor frame body 105 and the indoor lid body 106 integrated in advance are screwed and fixed to the horizontal aggregate 3 by the second screw 12, but the lower projection 105k of the indoor frame body 105 is fixed. And a pair of upper and lower second screw insertion holes 105e are formed at positions where they are exposed from the closed indoor cover 106 and do not interfere with each other. The second screw 12 to be screwed into the hole 105e can be screwed in a state in which the indoor lid body 106 is in the closed posture, so that the screwing and fixing by the second screw 12 can be facilitated.

Of course, the present invention is not limited to the above embodiments, and the number of the second screws 12 for fixing the indoor frame body 5 (105) and the aggregate 3 is limited to two. Without limitation, the number can be an appropriate number of three or more.
Furthermore, the fixing position of the indoor frame body 5 (105) and the aggregate 3 by the second screw 12 may be not only the upper and lower sides sandwiching the opening H, but also the left and right sides. In the case of fixing on both the upper and lower sides by the second screw 12, the opening H is not limited to the same position in the left-right direction, and may be a position tilted in the left-right direction. On the other hand, in the case where the second screw 12 is fixed on both the left and right sides, the opening H is not limited to the same position in the vertical direction, and may be a position that is inclined in the vertical direction.

  Furthermore, in each said embodiment, although the indoor cover body 6 (106) is comprised so that a closing attitude | position can be hold | maintained with the urging | biasing force of the urging | biasing ammunition 7a (107a), it is limited to this. For example, a weight may be provided at the lower end portion of the indoor lid body 6 (106) so that the closed posture can be maintained.

  INDUSTRIAL APPLICABILITY The present invention can be used for a post port installed in an entrance door provided in an apartment house or the like.

DESCRIPTION OF SYMBOLS 1 Door body 1a Indoor face plate 2 Post receiving case 3 Horizontal aggregate 3b Connection piece 4 Vertical aggregate 5 Indoor frame body 5a Indoor base piece 5d First screw insertion hole 5e Second screw insertion hole 6 Indoor cover body 7 pivot Support pin 8 Outdoor frame body 8a Outdoor base piece 8d Screw receiving body 9 Outdoor lid body 10 Pivoting pin 11 First screw 12 Second screw

Claims (5)

Post opening provided in the opening established in the door body, steel aggregate provided along the face plate inside and outside the door body within the door thickness around the opening, and the indoor and outdoor peripheral edge of the opening An indoor frame body is constituted by a pair of indoor and outdoor frame bodies provided on the inside and indoor and outdoor lid bodies that are swingably provided on the respective frame bodies and open and close the indoor and outdoor openings. And the indoor lid body are made of steel, and the indoor frame body and the outdoor frame body are fastened with a plurality of first screws with the peripheral edge of the opening interposed therebetween, so that both frame bodies are attached to the peripheral edge of the opening. A fire-proof post port in a front door characterized in that the indoor frame body and the aggregate are fixed using a second screw in at least two places while being fixed in a sandwiched manner. The fireproof post port in the front door according to claim 1, wherein the indoor frame body and the aggregate are fixed by the second screw at two locations with the opening portion interposed therebetween. The fixing of the two positions sandwiching the opening between the indoor frame body and the aggregate by the second screw is fixing at the same position in the left-right direction of the opening when the second screw has two upper and lower positions. The fire-proof post port in the entrance door according to claim 2, wherein when it is a place, it is fixed at the same position in the vertical direction of the opening. The fire prevention at the front door according to any one of claims 1 to 3, wherein the second screw for fixing the indoor frame body and the aggregate is exposed from the indoor lid body in a closed posture. Post mouth. 5. An urging ammunition for holding the indoor lid body 6 in a closed position is provided at two places on the left and right sides or two places on the top and bottom sides of the second screw. Fire post at the entrance door.

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