JP2019190202A - Refurbished door frame and refurbished door - Google Patents

Abstract

To provide a refurbished door frame capable of obtaining high fire prevention performance and a refurbished door using the refurbished door frame.SOLUTION: A refurbished door frame 10 has a structure in which a new door frame 18 is attached to an inner side of an existing door frame 16 which is left after removing an existing door, and comprises a connecting metal fitting 34 having a housing-side mounting portion 34b to be attached to the building's housing 14 and a frame-side mounting surface 34a to be attached to a frame outer prospective surface 24d of a vertical frame 18d of a new door frame 18, a reinforcing member 50 disposed at a position on the outer side of the vertical frame 18d with respect to the connecting metal fitting 34 and the vertical frame 18d, and a regulating screw 55 that is interposed between the connecting metal fitting 34 and is locked by a reinforcing member 50 to regulate the movement of the vertical frame 18d to the outside of the frame.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a refurbished door frame in which a new door frame is attached to the inside of an existing door frame that has been removed by removing an existing door, and a refurbished door using the refurbished door frame.

  Conventionally, in order to renovate entrance doors and other indoor / outdoor doors at low cost, the existing door frame fixed to the building frame is left behind, and the new door frame and A method of attaching a new door is being carried out. For example, Patent Document 1 discloses a configuration in which a renovated door frame is supported by a metal fitting fixed to a building frame when a new door frame is attached to the inside of an existing door frame.

Japanese Patent Laid-Open No. 2006-164325

  For example, when the refurbished door having the structure as described in Patent Document 1 is exposed to a fire flame from the outside of the room, the vertical frame of the new aluminum door frame may be deformed so as to swell toward the outside of the frame. If it does so, the through-hole of the indoor / outdoor direction used as a passage of a flame or smoke will be formed between a new door and a new door frame. In particular, when the vertical frame on the door end side is deformed, there is a concern that the latch protruding from the new door falls off from the latch receiving portion provided on the vertical frame, and the through-hole in the indoor / outdoor direction is enlarged.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a modified door frame capable of obtaining high fire prevention performance and a modified door using the modified door frame.

  The refurbished door frame according to the present invention is a refurbished door frame in which a new door frame is attached to the inside of an existing door frame that has been left after the existing door is removed, the housing side mounting portion to be attached to a building body, and the newly installed door frame A connecting metal fitting having a frame-side mounting portion to be attached to a frame outer prospective surface of the vertical frame of the door frame, and a frame outer member disposed at a position that is outside the vertical frame than the connecting metal fitting and the vertical frame. And a restricting member that is interposed between the connecting metal fitting or the vertical frame and is restricted by the frame outer member to restrict movement of the vertical frame to the outer side of the frame. To do.

  The refurbished door according to the present invention is characterized in that the new door is supported by the refurbished door frame having the above structure so as to be opened and closed.

  According to such a configuration, even when the vertical frame of the new door frame is about to move to the outside of the frame due to thermal deformation in the event of a fire, the tip of the regulation screw is locked to the frame outside member. As a result, the movement of the vertical frame to the outside of the frame is restricted, and it is possible to prevent the formation of a through-hole in the indoor / outdoor direction between the new door supported by the new door frame and the vertical frame, and a high fireproof performance. can get.

  In the refurbished door frame according to the present invention, the restriction member may be configured by a screw having a screw portion screwed to the coupling metal fitting or the vertical frame, and a tip end of the screw portion being locked to the frame outer member. Good. If it does so, a control member can arrange | position a front-end | tip to a frame outer side member easily only by adjusting the screwing position with respect to a connection metal fitting or a vertical frame. For this reason, when the restricting member is a screw, the disposition of the restricting member can be flexibly dealt with with respect to manufacturing tolerances, assembly errors, etc. of the vertical frame and the connecting bracket, and the usability is good. Moreover, at the time of construction of the refurbished door frame, the position of the vertical frame in and out of the frame can be adjusted by adjusting the screwing position of the screw that is the restricting member and pressing the frame outer member at its tip. Thereby, the clearance gap between a new door and a new door frame can be adjusted, for example, the amount applied to the latch receiving part of the new door frame side latch of the new door side can also be adjusted.

  In the refurbished door frame according to the present invention, the frame outer member may be formed of a metal member fixed to the existing door frame and disposed opposite to the connection fitting and the vertical frame. If it does so, the metal member can combine the function of reinforcement of a vertical frame, and latching of a control member, and fireproof performance improves further.

  In the refurbished door frame according to the present invention, the new door frame is provided so as to project outward from the existing door frame, and the regulating member has a width with respect to a width dimension in a prospective direction of the vertical frame. You may comprise so that it might be provided in the position which approached the outdoor side rather than the center of the dimension. If it does so, the control member can support the free end side of a connection metal fitting, and can prevent the movement of the vertical frame at the time of a fire more reliably.

  In the refurbished door frame according to the present invention, the vertical frame has a connection structure in which an outdoor side portion arranged on the outdoor side and an indoor side portion arranged on the indoor side are connected by a heat insulating material, and the chamber The outer side part and the indoor side part may be connected to each other by a metal plate, and the restriction member may be arranged at a position overlapping the outdoor side part in the prospective direction of the vertical frame. If it does so, even if it is a connection structure where a vertical frame pinched | interposed the heat insulating material, since the position spaced apart from the housing | casing is latched by a control member, the movement of the vertical frame at the time of a fire can be prevented much more reliably.

  In the refurbished door frame according to the present invention, the vertical frame is disposed on the door-end side of the new door supported to be opened and closed inside the new door frame, and the frame inner prospective surface of the vertical frame. May be configured to be provided with a latch receiving portion with which the latch of the new door is engaged. Then, the restriction member prevents the vertical frame on the door side from moving in a direction away from the door side expected surface of the new door during a fire. For this reason, it is possible to prevent the latch from falling off the latch receiving portion and expanding the through-hole in the indoor / outdoor direction.

  In the modified door frame according to the present invention, the new door has an upper lock protruding from above the latch and a lower lock protruding from below the latch on the prospective surface inside the frame, and An upper lock receiving portion with which the upper lock engages is provided above the latch receiving portion, and a lower lock receiving portion with which the lower lock engages is located below the latch receiving portion, on the frame inner prospective surface of the frame. The restriction member may be provided at a position between the upper lock receiving portion and the lower lock receiving portion. Then, the restricting member is disposed in the vicinity of the latch and is disposed at a position between the upper and lower locks. For this reason, it can prevent more reliably that a latch falls from a latch receiving part at the time of a fire, and the through-hole of an indoor / outdoor direction expands.

  According to the present invention, high fireproof performance can be obtained in the modified door frame.

It is a cross-sectional view of a modified door provided with a modified door frame according to an embodiment of the present invention. It is the cross-sectional view which expanded the vertical frame on the door-end side, and its peripheral part. It is the cross-sectional view which expanded the vertical frame and its peripheral part of the hanging origin side. FIG. 4A is a side view of the vertical frame on the door end side and its peripheral portion as viewed from the outside of the frame, and FIG. 4B shows the vertical frame and its peripheral portion shown in FIG. It is the front view seen from the outside. It is the side view which looked at the vertical frame shown in Drawing 4 (A) and its peripheral part from the frame inner side. 6A is a cross-sectional view taken along the line AA in FIG. 6B, and FIG. 6B shows the connecting bracket provided on the vertical frame on the door-end side and its peripheral portion on the indoor side. It is the principal part enlarged front view seen from.

  Hereinafter, a modified door frame according to the present invention will be described in detail with reference to the accompanying drawings by exemplifying a modified door that is a fitting provided with the door frame and giving a preferred embodiment.

  The refurbished door 12 including the refurbished door frame 10 according to the present embodiment removed the existing door that was previously installed in the opening 14a of the building housing 14 leaving the door frame (the existing door frame 16) and left it. This is a fitting that attaches a new door frame (new door frame 18) to the inside of the existing door frame 16 and supports the new door 20 so that it can be opened and closed. The renovation door 12 is installed, for example, by renovation work for a front door of a house. In the present embodiment, the refurbished door 12 of a single door is illustrated, but the refurbished door 12 may be a double door or the like.

  The existing door frame 16 has a rectangular opening formed by four-frames an upper frame 16a, a lower frame 16b, and left and right vertical frames 16c and 16d. Each of the frames 16a to 16d is an extruded shape made of a metal material such as aluminum. The frames 16a to 16d are fixed to the housing 14 before the new door frame 18 is attached. In FIG. 1, the upper frame 16a (not shown) is also provided with reference numerals, but the upper frame 16a is covered with the new door frame 18 in the same manner as the lower frame 16b. It is provided between the upper end portions.

  The new door frame 18 is provided so as to protrude outward from the existing door frame 16. The new door frame 18 has a rectangular opening (door opening 22) formed by four-frames an upper frame 18a, a lower frame 18b, and left and right vertical frames 18c and 18d. Each frame 18a-18d is comprised with the extrusion shape material of metal materials, such as aluminum, for example. In FIG. 1, the upper frame 18a (not shown) is also provided with a reference numeral, but the upper frame 18a is provided between the upper ends of the left and right vertical frames 18c and 18d in the same manner as the lower frame 18b.

  In this application, the prospective direction refers to the indoor / outdoor direction of the refurbished door 12, that is, the direction from the indoor side toward the outdoor side or the opposite direction (the direction indicated by the arrow Y in the drawing). The prospective surface is a surface extending along the prospective direction. The finding direction is a direction orthogonal to the prospective direction, and in the case of the vertical frame 18c that is long in the vertical direction, the horizontal direction (direction indicated by the arrow X in the figure) orthogonal to the longitudinal direction is referred to. In the case of the long lower frame 18b or the like, the vertical direction (direction indicated by an arrow Z in the drawing) perpendicular to the longitudinal direction is referred to. The finding surface is a surface along the finding direction. The frame inner side (inward direction of the frame) of the frame-shaped member refers to, for example, the inner side (door opening 22 side) of the new door frame 18, and the frame outer side (outer direction of the frame) of the frame-shaped member refers to, for example, the new door frame 18 It means the outside (the existing door frame 16 side or the housing 14 side).

  The vertical frame 18c on the hanging side connects the outdoor side part 24a arranged on the outdoor side and the indoor side part 24b arranged on the indoor side with a pair of heat insulating materials 26, and is formed into a substantially rectangular cross section. It is. The indoor side portion 24b is provided with a door stop 28 that protrudes inward from the frame inner prospective surface 24c. The vertical frame 18c is fixed to the housing 14 via a crank-shaped connecting bracket 30 at the frame outer prospective surface 24d of the outdoor portion 24a and the indoor portion 24b.

  One end of the outer frame 32 that covers the vertical frame 16c of the existing door frame 16 from the outdoor side is fixed to the outdoor side finding surface 24e of the outdoor side part 24a of the vertical frame 18c. The outer frame 32 is a decorative member formed of an extruded shape of a metal material such as aluminum, and is for enhancing the appearance of the outdoor side of the modified door 12. The other end of the outer frame 32 is fixed to the housing 14 side.

  The vertical frame 18d on the door end side is substantially bilaterally symmetric with the vertical frame 18c on the hanging side, and the basic structure is the same. That is, the vertical frame 18d has an outdoor part 24a and an indoor part 24b connected by the heat insulating material 26, and has a door stop 28 on the frame inner prospective surface 24c of the indoor part 24b. The vertical frame 18d is fixed to the housing 14 via a crank-shaped connecting bracket 34 at the frame outer prospective surface 24d of the outdoor portion 24a and the indoor portion 24b. The connection bracket 34 is slightly different in shape from the connection bracket 30, but details will be described later. The upper frame 18a and the lower frame 18b may have the same configuration as the vertical frames 18c and 18d, or may have different configurations.

  In the case of this embodiment, the new door 20 is a single opening. The new door 20 is supported to be opened and closed inside the new door frame 18 via a hinge 36 attached to the outdoor portion 24a of the vertical frame 18c, and opens and closes outside the door stop 28. A latch 38 is provided on the door side prospective surface 20a of the new door 20 so as to be able to appear and retract. The latch 38 engages with a latch receiving portion 40 provided on the frame inner prospective surface 24c of the vertical frame 18d facing when the new door 20 is closed.

  As shown in FIGS. 2 and 3, the new door frame 18 is installed on the inner side of the existing door frame 16 remaining on the outdoor side of the housing 14. The new door frame 18 is connected to the housing 14 on the indoor side with respect to the installation position via the connection fittings 30 and 34. The upper frame 18a is fixed to the housing 14 via the connection fitting 30, for example, similarly to the vertical frame 18c. The lower frame 18b is installed, for example, on the soil, for example, without using the connection fittings 30, 34, and is connected to the lower frame 16b of the existing door frame 16.

  As shown in FIG. 2, the connecting bracket 34 used for the vertical frame 18 d on the door-end side has a crank shape that is bent so as to avoid the door contact portion 16 e of the existing door frame 16. The connection fitting 34 is formed by bending a metal plate such as stainless steel or steel. The connection fitting 34 is a component (piece) formed to be shorter than the longitudinal dimension of the vertical frame 18d. In the case of the present embodiment, the connection fitting 34 is installed only at a position close to the latch receiving portion 40 in the longitudinal direction of the vertical frame 18d, and the same connection fitting 30 as that of the vertical frame 18c is installed at other positions. (See FIG. 4 and FIG. 5). The vertical frame 18d may be connected to the housing 14 using a plurality of connection fittings 34 without using the connection fitting 30.

  The connecting fitting 34 is a frame-shaped attachment portion (metal plate) 34a that is attached to the new door frame 18 in one prospective direction portion of the crank shape, and a housing-side attachment that is attached to the housing 14 in the other prospective direction portion. Part 34b.

  The frame side attachment portion 34a is fixed to the frame outer prospective surface 24d of the vertical frame 18d by using an attachment screw 42 from the outside of the frame. Specifically, the frame-side attachment portion 34a extends from the frame outer prospective surface 24d of the indoor side portion 24b beyond the heat insulating material 26 to the frame outer prospective surface 24d of the outdoor portion 24a, and both the portions 24a, 24b. Each of the frame outer prospective surfaces 24d is fixed using a mounting screw 42. As a result, the vertical frame 18d of the connection structure sandwiching the heat insulating material 26 is securely held by the connection fitting 34. The connection fitting 34 is provided with an extending portion 34c in which the frame side attaching portion 34a is extended to the vicinity of the outdoor side end portion of the outdoor side portion 24a. The extending part 34c reinforces the part close to the latch receiving part 40 of the vertical frame 18d to which a load from the new door 20 is applied (see FIGS. 4 and 5). The extending part 34c is fixed to the frame outer prospective surface 24d of the vertical frame 18d by using an attachment screw 43 from the outside of the frame.

  The attachment screws 42 and 43 may be fastened in the opposite direction (the direction from the inner side of the frame toward the outer side of the frame). In this case, the mounting screws 42 and 43 may be fixed to the connecting bracket 34 or the existing door frame 16 by inserting a large-diameter hole (baka hole) provided in the new door frame 18, for example.

  The housing side attachment portion 34b is disposed at a position offset inward of the door opening 22 from the frame side attachment portion 34a on the indoor side of the new door frame 18. The housing side attachment portion 34b is fixed to the prospective surface of the opening portion 14a of the housing 14 by using an attachment screw 48 with the spacer 46 sandwiched from the door opening portion 22 side.

  The connecting metal fitting 34 is located along the indoor-side finding surface 24f of the indoor-side part 24b so that the part in the finding direction (the connecting part 34d) between the frame-side attaching part 34a and the frame-side attaching part 34b avoids the door stop 16e. Arranged. The connecting fitting 34 has sufficient strength due to the crank shape. In addition, the connecting bracket 34 is provided with the frame side mounting portion 34a offset from the outside of the door opening 22 (outside the frame) with respect to the housing side mounting portion 34b. The opening dimension of the door opening 22 can be ensured to the maximum.

  As shown in FIG. 2, the refurbished door frame 10 has a reinforcing material (metal member, frame outer member) 50 at a position between the vertical frame 18 d of the new door frame 18 and the vertical frame 16 d of the existing door frame 16. . The reinforcing material 50 is a metal plate such as stainless steel or steel. The reinforcing material 50 is a reinforcing plate that is disposed outside the vertical frame 18d and restricts deformation and movement of the vertical frame 18d toward the outside of the frame. The reinforcing member 50 is a component (piece) that is shorter than the longitudinal dimension of the vertical frame 18d and longer than the vertical dimension of the connecting fitting 34. The reinforcing material 50 may have a length over the entire length of the vertical frame 18d. As shown in FIG. 4, the reinforcing members 50 are provided, for example, at positions between the upper and lower connecting metal fittings 30 and 34, and are installed, for example, two vertically in the longitudinal direction of the vertical frame 18 d.

  The reinforcing member 50 is fixed from the frame inner side to the frame inner prospect surface of the vertical frame 16d of the existing door frame 16 by using a fixing screw 52, and between the vertical frame 16d and the connecting metal fitting 34 (frame side mounting portion 34a). Is arranged. The reinforcing member 50 has an extending portion 50a extending to the outdoor side of the vertical frame 16d. The extending portion 50a extends to a position that is on the outdoor side of the center in the prospective direction of the outdoor side portion 24a of the vertical frame 18d. The extending portion 50a is connected to the outdoor portion 24a by a connecting screw 54 that extends from the inside of the hollow portion of the outdoor portion 24a of the vertical frame 18d toward the outside of the frame. As shown in FIG. 4B, the connection screws 54 are respectively provided at positions shifted downward from the connection fitting 34 and at positions above the connection fitting 30 below. The connecting screw 54 is inserted into a large-diameter hole (baka hole) formed in the outdoor portion 24a of the vertical frame 18d and is screwed into a screw hole formed in the extending portion 50a. That is, the connecting screw 54 is fixed to the extension portion 50a, and the head is locked to the outdoor portion 24a in a state of being inserted through the large-diameter hole with a gap.

  A gap C is provided between the frame-side mounting portion 34 a of the coupling metal 34 and the reinforcing material 50. The gap C is provided in consideration of manufacturing tolerances and assembling errors of the connection fitting 34 and the reinforcing material 50. The refurbished door frame 10 has a regulation screw (regulation member) 55 passed through the gap C. The restricting screw 55 is provided from the frame side mounting portion 34 a of the connection fitting 34 toward the extending portion 50 a of the reinforcing member 50. The restriction screw 55 is installed such that the screw portion 55a is screwed into the screw hole 34e formed in the frame side attachment portion 34a, and the tip 55b is in contact with or close to the frame outer surface 50b of the reinforcing member 50 (see FIG. 2). The restricting screw 55 restricts the deformation and movement of the vertical frame 18d (and the connecting bracket 34) to the outside of the frame by the tip 55b being locked to the reinforcing member 50. The gap C is sealed by the spacer 56 and the sealing material 57 (see FIG. 2). The gap formed between the reinforcing member 50 and the vertical frame 16d is also sealed by the spacer 56 and the sealing material 57.

  As described above, the vertical frame 18d on the door-end side is attached to the housing 14 using the plurality of connection fittings 30 except for a position close to the latch receiving portion 40 (see FIG. 4). As shown in FIG. 4A, the connection fitting 30 has the same configuration as the connection fitting 34 except that the extension portion 34c is not provided on the outdoor side of the frame side attachment portion 34a. Accordingly, neither the attachment screw 43 nor the regulation screw 55 is provided on the connection fitting 30. Regarding the connection fitting 30, elements having the same or similar functions and effects as those of the connection fitting 34 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 2, a frame member 60 is provided on the indoor side of the vertical frame 18d to cover the housing-side mounting portion 34b of the connection fitting 34 (30) from the door opening 22 side. The frame member 60 is, for example, an extruded shape made of a metal material such as aluminum and having a substantially L-shaped cross section. The frame member 60 is fixed to the housing 14 using a fixing screw 64 with a wooden frame 62 interposed therebetween. The frame member 60 has a surface parallel to the housing-side mounting portion 34b of the connection fitting 34, and covers the housing-side mounting portion 34b and the mounting screw 48 to enhance the appearance of the interior of the modified door frame 10 on the indoor side. It is.

  As shown in FIG. 2, thermally expandable members 66 and 67 are provided in the vertical frame 18d. The thermally expandable member 66 has a width dimension in the indoor / outdoor direction extending across the heat insulating material 26 and extending from the outdoor portion 24a to the indoor portion 24b. The thermally expandable member 66 is affixed to the frame inner prospective surface 24c in a state extending over the longitudinal direction of the vertical frame 18d (see FIGS. 2, 4B, and 5). The thermally expandable member 67 has a width dimension in the indoor / outdoor direction from the indoor side end portion of the outdoor side portion 24a to the indoor side portion 24b across the heat insulating material 26. The thermally expandable member 67 is attached to the surface of the frame outer prospective surface 24d and the connection fittings 30 and 34 in a state of extending in the longitudinal direction of the vertical frame 18d including the connection fittings 30 and 34 (see FIG. 2, see FIGS. 4A and 4B). The thermally expandable members 66 and 67 are heated foam materials such as graphite that expands and expands when heated, and are adhesively fixed to the surfaces of the vertical frame 18d and the connecting fittings 30 and 34 using an adhesive, a double-sided tape, or the like. Is done.

  As shown in FIGS. 4 and 5, the vertical frame 18 d includes an upper lock receiving portion 68, a latch receiving portion 40, and a lower lock receiving portion 69 in order from the top to the bottom. The upper lock receiving portion 68, the latch receiving portion 40, and the lower lock receiving portion 69 each open to the frame inner prospective surface 24c of the vertical frame 18d. The upper lock receiving portion 68 engages with an upper lock 70 (see FIG. 1) that appears and disappears from the door-side expected surface 20 a of the new door 20. The latch 38 is engaged with the latch receiving portion 40. The lower lock receiving portion 69 engages with a lower lock 71 (see FIG. 1) that appears and disappears from the door-side expected surface 20 a of the new door 20. The upper lock 70 is locked by a thumb turn 73 provided on the upper portion of a door handle 72 provided on the indoor surface of the new door 20, and the lower lock 71 is locked by a thumb turn 74 provided at the lower portion of the door handle 72. Is done.

  As shown in FIG. 3, the vertical frame 18c on the suspending side is basically the same structure as the vertical frame 18d on the door end side except for the left-right symmetric structure, and therefore the same or similar elements are the same. Reference numerals are assigned and detailed description is omitted. However, a hinge 36 is screwed to the outdoor portion 24a of the vertical frame 18c in place of the latch receiving portion 40, the upper lock receiving portion 68, and the lower lock receiving portion 69. The vertical frame 18 c is connected to the housing 14 using a plurality of connection fittings 30 without using the connection fitting 34. For this reason, the restriction screw 55 is not provided between the connection fitting 30 and the reinforcing member 50 of the vertical frame 18c.

  When the refurbished door 12 according to the present embodiment is exposed to a fire from the outside of the room, for example, the vertical frame 18d is thermally deformed, and the frame as shown by an arrow X1 in FIGS. 6 (A) and 6 (B). There is a possibility of causing deformation and movement that bulges outward. When the vertical frame 18d is deformed so as to open to the outside of the frame in this way, a through-hole in the indoor / outdoor direction is formed between the new door 20 and the vertical frame 18d as a passage for flames and smoke. Further, since the vertical frame 18d moves in a direction away from the door-side expected surface 20a of the new door 20, there is a concern that the latch 38 is dropped from the latch receiving portion 40 and the through hole in the indoor / outdoor direction is enlarged. In particular, in the modified door frame 10, the vertical frame 18 d is connected to the housing 14 by connecting metal fittings 30 and 34 extending from the indoor housing 14 to the outdoor side. For this reason, the outer side of the vertical frame 18d is not directly supported by the housing 14, and is easily moved to the outer side of the frame. In FIG. 6A, the connection screw 54 is not shown.

  Therefore, the refurbished door 12 has a reinforcing member 50 disposed outside the vertical frame 18 d and the connecting metal 34, and a restriction screw 55 is provided between the connecting metal 34 and the reinforcing material 50. Therefore, even if the spacer 56 and the sealing material 57 that block the gap C between the vertical frame 18d and the reinforcing member 50 are burned out or melted in the event of a fire, and the vertical frame 18d tries to move to the outside of the frame, the regulating screw The tip 55b of 55 is locked to the frame outer surface 50b of the reinforcing member 50. As a result, the movement of the vertical frame 18d to the outside of the frame is restricted, and it is possible to prevent the formation of a through-hole in the indoor / outdoor direction between the new door 20 and the vertical frame 18d, and a high fireproof performance is obtained.

  On the other hand, in the case of the vertical frame 18c on the suspending side, the connection fitting 30 is not provided with the restriction screw 55. However, since the vertical frame 18c on the hanging side is fastened to the new door 20 by the hinge 36, the movement of the vertical frame 18c to the outside of the frame is suppressed. Even when the vertical frame 18c moves beyond the support strength by the hinge 36, the vertical frame 18c is held by the reinforcing member 50 after the gap C is moved. For this reason, it can prevent that the through-hole of the indoor / outdoor direction formed between the new door 20 and the vertical frame 18c expands, and can ensure sufficient fire prevention performance. Of course, the connecting bracket 34 may be provided also on the vertical frame 18 c on the suspending side, and the regulating screw 55 may be interposed between the reinforcing member 50. As a result, the vertical frame 18c on the suspending side moves to the outside of the frame, thereby moving the new door 20 in a direction to escape from the vertical frame 18d on the door end side, and the latch 38 is more surely removed from the latch receiving portion 40. Can be prevented.

  A restricting member that is interposed between the connecting fitting 34 and the reinforcing member 50 and restricts the movement of the vertical frame 18d to the outside of the frame is other than a screw such as a restricting screw 55, for example, the connecting fitting 34 and the reinforcing member 50. It may be a metal spacer or the like disposed between the two. However, the regulating screw 55 can easily place the tip 55b in contact with the reinforcing member 50 only by adjusting the screwing position with respect to the connecting metal fitting 34. For this reason, the regulating screw 55 can easily cope with a difference in the width of the gap C based on manufacturing tolerances, assembly errors, and the like of the vertical frame 18d, the coupling fitting 34, and the reinforcing member 50, and is easy to use. Further, when the modified door frame 10 is constructed, the position of the vertical frame 18d in the frame inside / outside direction is adjusted to some extent by adjusting the screwing position of the restriction screw 55 with respect to the screw hole 34e and pressing the reinforcing member 50 with the tip 55b. You can also. Thereby, the amount of latch 38 applied to the latch receiving portion 40 can also be adjusted. The restricting screw 55 may be screwed not only to the connection fitting 34 and the vertical frame 18d but also to the reinforcing member 50.

  In the case of the present embodiment, the regulating screw 55 is provided at a position closer to the outdoor side than the center of the width dimension with respect to the width dimension in the prospective direction of the vertical frame 18 d, that is, the extension part 34 c of the coupling metal 34. It has been. That is, the regulating screw 55 is disposed at a position overlapping the outdoor portion 24a in the prospective direction of the vertical frame 18d. As described above, the restriction screw 55 is disposed at a position separated from the housing-side mounting portion 34b that is a fixing portion of the connecting metal 34 with respect to the housing 14, so that the frame-side attaching portion 34a that is the free end side of the connecting metal 34 is provided. The side can be reliably supported. As a result, the movement of the vertical frame 18d during a fire can be prevented more reliably and efficiently.

  Moreover, when the refurbished door 12 is exposed to a fire, the thermally expandable members 66 and 67 expand. As a result, the expanded thermally expandable member 66 fills a gap between the door-side expected surface 20a of the new door 20 and the frame-inside expected surface 24c of the vertical frames 18c and 18d. Is more reliably prevented. Further, the expanded thermal expansion member 67 fills the gap between the frame outer prospective surface 24d of the vertical frames 18c and 18d and the vertical frames 16c and 16d of the existing door frame 16, and this gap becomes a through hole in the indoor / outdoor direction. It also prevents that.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  In the said embodiment, although the new door frame 18 of the heat insulation structure which connected the outdoor side part 24a and the indoor side part 24b with the heat insulating material 26 was illustrated, each frame 18a-18d of the new door frame 18 uses the heat insulating material 26. The structure which is not necessary may be sufficient.

  In the above-described embodiment, the restriction screw 55 is exemplified by a configuration in which the screw portion 55a is screwed into the screw hole 34e of the connection fitting 34. However, the restriction screw 55 is screwed into a screw hole formed in the vertical frame 18d, A mounting structure in which a large-diameter hole (baka hole) of the connecting metal fitting 34 is inserted may be used. Further, the restriction screw 55 may be screwed into a screw hole formed in the vertical frame 18d and provided at a position displaced in the vertical direction from the connecting metal fitting 34.

  In the above embodiment, the configuration in which the restriction screw 55 is locked by the reinforcing member 50 arranged outside the vertical frame 18d is illustrated. However, the restriction screw 55 is arranged outside the vertical frame 18d other than the reinforcing member 50. It may be locked with a member (frame outer member). For example, the vertical frame 16d of the existing door frame 16 is made of aluminum like the vertical frame 18d of the new door frame 18. However, since the vertical frame 18d is hidden from the outside by the vertical frame 18d, the temperature rise during a fire is low. Therefore, the restriction screw 55 may be locked to the vertical frame (frame outer member) 16d of the existing door frame 16. Further, the regulation screw 55 may be locked by a housing (frame outer member) 14.

  In the above embodiment, the crank-shaped connection fittings 30 and 34 are illustrated, but the connection fittings 30 and 34 may have a flat plate shape or the like. In addition, in the connection fittings 30 and 34, the frame side attachment portion 34a is attached only to the indoor side portion 24b, for example, and the frame side attachment portion 34a straddling the heat insulating material 26 is provided between the indoor side portion 24b and the outdoor side portion 24a. You may fix with the metal plate different from.

  DESCRIPTION OF SYMBOLS 10 Renovated door frame, 12 Renovated door, 14 Housing, 14a Opening, 16 Existing door frame, 16c, 16d, 18c, 18d Vertical frame, 18 New door frame, 20 New door, 22 Door opening, 24a Outdoor part, 24b Indoor side part, 26 Heat insulating material, 30, 34 Connecting bracket, 34a Frame side attaching part, 34b Housing side attaching part, 34c Extension part, 38 Latch, 40 Latch receiving part, 50 Reinforcing material, 55 Restriction screw, 55a Screw Part, 55b tip, 68 upper lock receiving part, 69 lower lock receiving part

Claims (8)

A refurbished door frame in which a new door frame is attached to the inside of an existing door frame that is left after the existing door is removed,
A connecting bracket having a housing-side mounting portion to be attached to the building housing, and a frame-side mounting portion to be attached to a frame outer prospective surface of the vertical frame of the new door frame;
It is interposed between the connecting metal or the vertical frame and a frame outer member disposed at a position that is outside the vertical frame with respect to the connecting metal and the vertical frame, and is locked by the frame outer member. A regulating member for regulating movement of the vertical frame to the outside of the frame,
A refurbished door frame characterized by comprising: A refurbished door frame according to claim 1,
The modified door frame is characterized in that the restricting member is a screw having a screw portion screwed into the connecting metal fitting or the vertical frame, and a tip end of the screw portion being locked to the frame outer member. A refurbished door frame according to claim 1 or 2,
The refurbished door frame, wherein the frame outer member is a metal member fixed to the existing door frame and disposed opposite to the connection fitting and the vertical frame. The refurbished door frame according to any one of claims 1 to 3,
The new door frame is provided so as to protrude outward from the existing door frame,
The modified door frame is characterized in that the regulating member is provided at a position closer to the outdoor side than the center of the width dimension with respect to the width dimension in the prospective direction of the vertical frame. A refurbished door frame according to claim 4,
The vertical frame has a connection structure in which an outdoor side portion arranged on the outdoor side and an indoor side portion arranged on the indoor side are connected by a heat insulating material, and the outdoor side portion and the indoor side portion are connected to each other. Connected to each other by metal plates,
The refurbished door frame, wherein the restricting member is disposed at a position overlapping the outdoor portion in a prospective direction of the vertical frame. A refurbished door frame according to any one of claims 1 to 5,
The vertical frame is disposed on the door end side of a new door supported to be opened and closed inside the new door frame,
A refurbished door frame characterized in that a latch receiving portion with which a latch of the new door is engaged is provided on a frame inner prospective surface of the vertical frame. A refurbished door frame according to claim 6,
The new door has an upper lock that protrudes from above the latch and a lower lock that protrudes from below the latch on the prospective surface inside the frame,
An upper lock receiving portion with which the upper lock engages is provided above the latch receiving portion, and a lower lock receiving portion with which the lower lock engages is formed on the frame inner prospective surface of the vertical frame. Provided below,
The modified door frame, wherein the restricting member is disposed at a position between the upper lock receiving portion and the lower lock receiving portion.   A refurbished door, wherein the new door is supported by the refurbished door frame according to any one of claims 1 to 7 so as to be openable and closable.

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