CN113417542B - Double-layer window suitable for protecting historical buildings - Google Patents

Double-layer window suitable for protecting historical buildings Download PDF

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Publication number
CN113417542B
CN113417542B CN202110810388.1A CN202110810388A CN113417542B CN 113417542 B CN113417542 B CN 113417542B CN 202110810388 A CN202110810388 A CN 202110810388A CN 113417542 B CN113417542 B CN 113417542B
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China
Prior art keywords
window
existing
newly
double
window sash
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CN113417542A (en
Inventor
任中琦
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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Priority to CN202110810388.1A priority Critical patent/CN113417542B/en
Publication of CN113417542A publication Critical patent/CN113417542A/en
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/12—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod
    • E05C17/14—Hook and eye, or equivalent
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F17/00—Special devices for shifting a plurality of wings operated simultaneously
    • E05F17/002—Special devices for shifting a plurality of wings operated simultaneously for wings which lie one behind the other when closed

Abstract

The invention discloses a double-layer window suitable for protecting a historical building. Double-deck window includes existing window frame, existing casement, newly-increased window frame and newly-increased casement, wherein, newly-increased casement with be provided with aggregate unit and stop device between the existing casement, newly-increased casement inboard is provided with the handle lock, aggregate unit is including setting up the fixed part of existing casement lower limb, and set up the connecting portion of newly-increased casement lower limb to and flexible connectors, connecting portion surface has been seted up the breach of stepping down and has been located step down breach one side and with the slide of the breach intercommunication of stepping down, flexible connectors one end with fixed part fixed connection, the other end are equipped with the fastener, the fastener accessible the breach of stepping down gets into in the slide and in slide. The double-layer window can be opened and closed freely, the existing window sashes can be isolated when the double-layer window is closed, contact of tourists is avoided, the window sashes with large angles can be pushed open when the double-layer window is opened, and the ventilation area is increased.

Description

Double-layer window suitable for protecting historical buildings
Technical Field
The invention belongs to the technical field of historical building protection, and particularly relates to a double-layer window suitable for protecting historical buildings.
Background
The historical building is a building which is determined and published by the governments of people in cities and counties, has a certain protection value and can reflect historical features and local characteristics, and is different from buildings and structures of cultural relics protection units and immovable cultural relics, the cultural relic building is a building with a certain cultural relic value, and the historical building is a building with a certain building value.
Wooden windows are generally adopted in early history buildings, and are gradually replaced by steel windows and aluminum alloy doors and windows in later period due to natural defects of easy decay, flammability, cracking, worm damage and the like. But the original wood window generally has great value and significance for the integrity of historical buildings and the originality of materials. Therefore, the shadow can still be captured in a plurality of well-preserved recent historical buildings. The wooden window is exposed to the sun and rain all the year round, is easy to rot, cracks and deforms, and cannot withstand heavy touch. However, such historical buildings generally belong to scenic spots, a large number of tourists visit the historical buildings every day, and the curious windows of the tourists are damaged or scratched or corroded by pollution, so that a double-layer window suitable for protecting the historical buildings needs to be designed.
Patent application 201920358668.1 discloses a aggregate unit suitable for protect double window of historical architecture, include the window and set up in the inboard toughened glass board of window, be covered with the air vent on the toughened glass board, the window is through a powerful gluey fixed mounting fixed strip on the terminal surface of toughened glass board, the fixed strip is located the window lower extreme, be equipped with a spout on the terminal surface of fixed strip orientation toughened glass board, a slidable mounting slider in the spout, slider one end extends to the external world along the opening of spout, and a welding fixed mounting universal hinge, the toughened glass board is just being equipped with a first screw rod to universal hinge department, first screw rod welded fastening is on universal hinge. However, although the linkage device prevents the tourists from directly contacting the window to a certain extent, the linkage device cannot prevent the tourists from operating the first screw to open and close the window, and the interest of the tourists is possibly aroused; in addition, the toughened glass plate is fixed on the window, so that the window is not easy to clean, and the window glass can be cleaned only after the toughened glass plate is detached.
Patent application 201320799538.4 provides a double-layer window suitable for protecting historical buildings, which is used for solving the problem that the original single-layer window of the historical buildings in the prior art does not accord with energy conservation and environmental protection. This double-deck window suitable for protecting historical architecture includes: a linkage of a double window, a first window and a second window; the linkage device of the double-layer window comprises a connecting rod chute device and a connecting rod combination device, wherein the connecting rod chute device is provided with a chute and a plurality of first connecting holes, the connecting rod combination device is provided with a connecting rod base, a connecting rod and a plurality of second connecting holes, the connecting rod is connected with the connecting rod base through a connecting rod shaft pin, and the connecting rod is positioned in the chute and can move along the chute; the first window is fixedly connected with the connecting rod combination device through a second connecting hole; the second window is fixedly connected with the connecting rod sliding groove device through the first connecting hole. However, the connecting rod in the linkage device can only move along the sliding groove in the sliding groove and cannot move in the direction perpendicular to the sliding groove, so that the double-layer window can only be opened at a small angle actually, and the window opening and ventilation are inconvenient.
Therefore, the study of the double-layer window applicable to protecting historical buildings in the prior art is not sufficient, a space for further improvement exists, and the double-layer window applicable to protecting historical buildings needs to be designed, the window sash of the double-layer window can be opened and closed freely, the existing wooden window can be isolated when the double-layer window is closed, the contact of visitors is avoided, the window sash with a large angle can be pushed open when the double-layer window is opened, and the ventilation area is increased.
Disclosure of Invention
The invention aims to: aiming at the problems of double-layer windows suitable for protecting historical buildings in the prior art, the invention provides the double-layer window suitable for protecting the historical buildings, the window sash of the double-layer window can be freely opened and closed, the existing wooden window can be isolated when the double-layer window is closed, the contact of tourists is avoided, the window sash with a larger angle can be pushed open when the double-layer window is opened, and the ventilation area is increased.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-layer window suitable for protecting historical buildings comprises an existing outer window and a newly-increased inner window arranged on the inner side of the existing outer window, wherein the existing outer window comprises an existing window frame and an existing window sash, the newly-increased inner window comprises a newly-increased window frame and a newly-increased window sash, and the double-layer window is characterized in that a linkage device and a limiting device are arranged between the newly-increased window sash and the existing window sash, a handle lock is arranged on the inner side of the newly-increased window sash, the linkage device comprises a fixing part arranged on the lower edge of the existing window sash, a connecting part arranged on the lower edge of the newly-increased window sash, and a flexible connecting part positioned between the fixing part and the connecting part, a abdicating notch and a slide way positioned on one side of the abdicating notch and communicated with the abdicating notch are arranged on the surface of the connecting part, one end of the flexible connecting part is fixedly connected with the fixing part, and the other end of the flexible connecting part is provided with a fastener, the fastener accessible give way the breach gets into in the slide and slide in the slide.
Further, stop device is including setting up the solid fixed ring of first solid fixed ring and the second of newly-increased casement lower limb is in with the setting the solid fixed ring of third of existing casement lower limb, it is connected with the gag lever post to rotate on the first solid fixed ring, the gag lever post other end is provided with the spring, the spring end is provided with the couple, the gag lever post is rotatable extremely the couple with the solid fixed ring of second, the solid fixed ring hasp of third are in the same place.
Further, the length of the flexible connecting piece is at least equal to the distance H between the newly added window sash and the existing window sash when the newly added window sash and the existing window sash are opened to the maximum angle.
Furthermore, the flexible connecting piece has elasticity, the length of the flexible connecting piece in a natural state is at least equal to the distance H between the newly added window sash and the existing window sash when the newly added window sash and the existing window sash are closed, and the length of the flexible connecting piece in an extension state is at least equal to the distance H between the newly added window sash and the existing window sash when the newly added window sash and the existing window sash are opened.
Further, the flexible connector includes: chain, cotton rope, wire rope, spring and rubber band area.
Further, connecting portion are the L type, the breach of stepping down is located the side top of L type.
Further, connecting portion are the linear type, it is provided with the round pin axle to let a breach edge, it is connected with the apron to rotate on the round pin axle, the apron is rotatable extremely it is in to let a breach position and cover to let a breach top.
Further, the fixing part with existing casement passes through the binder bonding fixed, the solid fixed ring bottom of third is provided with solid fixed ring base plate, gu fixed ring base plate with existing casement also passes through the binder bonding fixed.
Furthermore, a fixing groove is formed in the periphery of the newly-added window frame, an adjusting foot is detachably connected in the fixing groove, and the adjusting foot comprises a screw rod in threaded connection with the fixing groove and a ground foot arranged at the bottom of the screw rod.
Further, a rubber pad is arranged at the bottom of the ground sole.
Further, an arc-shaped adjusting plate is arranged on the screw rod.
Compared with the prior art, the invention has the beneficial effects that:
(1) the double-layer window looks like the original wooden window from the outside, retains the appearance of the existing outer window, and conforms to the principle of 'repairing old as old' for repairing the outer facade of the historical protective building;
(2) the double-layer window is provided with the linkage device, can be synchronously linked, namely can be opened and closed at the same time, and is convenient to open and close;
(3) when the double-layer window is closed, the newly added window sash can completely isolate the existing external window, and can be locked through the handle lock and cannot be opened without a key, so that visitors are prevented from curiously opening and closing the double-layer window and damaging the existing window sash by excessive force;
(4) the linkage device horizontally slides in the slide way on the connecting part by means of the fastener of the flexible connecting piece, and moves in a direction perpendicular to the direction of the newly added window sash by means of the self extension or bending of the flexible connecting piece, so that the existing window sash and the newly added window sash can be opened to a larger angle, and ventilation is facilitated;
(5) the double-layer window is convenient to clean and maintain, the flexible connecting piece can be detached from the connecting part only by taking the fastener out of the abdicating notch, and the newly added window sash can be separated from the existing window sash;
(6) the double-layer window is provided with the limiting device, when the newly-added window sash and the existing window sash are opened to the maximum angle, the limiting device is utilized to generate rigid connection between the newly-added window sash and the existing window sash, the purpose of limiting the newly-added window sash and the existing window sash is achieved, and the situation that the newly-added window sash and the existing window sash collide with each other due to breeze blowing is avoided;
(7) the linkage device and the limiting device are arranged on the newly added window sashes and the lower edges of the existing window sashes, and the height is proper, so that the operation is convenient.
Drawings
FIG. 1 is a top view of a double-paned window of the present invention suitable for protecting historic buildings;
FIG. 2 is a side view of a double-paned window of the present invention suitable for protecting historic buildings;
FIG. 3 is a schematic structural view of a linkage assembly for protecting double windows of historic buildings according to the present invention;
FIG. 4 is a schematic view of another construction of a linkage assembly for protecting double windows of historic buildings according to the present invention;
FIG. 5 is a further schematic view of a linkage assembly suitable for protecting double-decked windows of historic buildings according to the present invention;
FIG. 6 is a schematic structural view of a stop device for protecting double-layered windows of historic buildings according to the present invention;
fig. 7 is a schematic structural view of an adjusting foot of the present invention, which is suitable for protecting double-layered windows of historic buildings.
Description of the reference numerals
1: the existing window frame; 2: existing window sashes; 3: newly adding a window frame; 4: newly adding a window sash; 5: a handle lock; 6: a fixed part; 7: a connecting portion; 8: a flexible connector; 9: a abdication gap; 10: a slideway; 11: a fastener; 12: a first retaining ring; 13: a second retaining ring; 14: a third fixing ring; 15: a limiting rod; 16: a spring; 17: hooking; 18: a pin shaft; 19: a cover plate; 20: a fixed ring substrate; 21: a screw; 22: ground feet; 23: a rubber pad; 24: an arc-shaped adjusting plate.
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
FIG. 1 is a top view of a double-paned window of the present invention suitable for protecting historic buildings; FIG. 2 is a side view of a double-paned window of the present invention suitable for protecting historic buildings; FIG. 3 is a schematic structural view of a linkage assembly for protecting double windows of historic buildings according to the present invention; FIG. 4 is a schematic view of another construction of a linkage assembly for protecting double windows of historic buildings according to the present invention; FIG. 5 is a further schematic view of a linkage assembly suitable for protecting double-decked windows of historic buildings according to the present invention; FIG. 6 is a schematic structural view of a stop device for protecting double-layered windows of historic buildings according to the present invention; fig. 7 is a schematic structural view of an adjusting foot of the present invention, which is suitable for protecting double-layered windows of historic buildings.
As shown in fig. 1 to 7, the double-layered window suitable for protecting a historical building comprises an existing outer window and a newly-added inner window arranged at the inner side of the existing outer window, wherein the existing outer window comprises an existing window frame 1 and an existing window sash 2, the newly-added inner window comprises a newly-added window frame 3 and a newly-added window sash 4, wherein, a linkage device and a limiting device are arranged between the newly added window sash 4 and the existing window sash 2, a handle lock 5 is arranged at the inner side of the newly added window sash 4, the linkage device comprises a fixed part 6 arranged at the lower edge of the existing window sash 2 and a connecting part 7 arranged at the lower edge of the newly added window sash 4, and the flexible connecting piece 8 is positioned between the fixing part 6 and the connecting part 7, the surface of the connecting part 7 is provided with a yielding notch 9 and a slide way 10 which is positioned on one side of the yielding notch 9 and communicated with the yielding notch 9, one end of the flexible connecting piece 8 is fixedly connected with the fixing part 6, the other end of the flexible connecting piece is provided with a fastener 11, and the fastener 11 can enter the slide way 10 through the yielding notch 9 and slide in the slide way 10.
Technical scheme more than adopting, through the restriction of flexible connectors 8 to existing outer window and newly-increased interior window home range, can connect into double-deck window with both to linkage through double-deck window realizes that double-deck window's linkage is opened and is closed. When the double-layer window needs to be closed, the newly added window sash 4 is locked through the handle lock 5 with the key, and therefore visitors are prevented from curiously touching the existing outer window. When the double-layer window needs to be opened, the newly-added window sash 4 is pushed to drive the existing window sash 2 to be opened, and the fastener 11 of the flexible connecting piece 8 can slide in the slide way 10 and can achieve the purpose of length adjustment through bending or extending, so that the newly-added window sash 4 and the existing window sash 2 can be opened to the maximum angles respectively. When the newly-added window sash 4 and the existing window sash 2 are opened to the maximum angle, the limiting device is utilized to generate rigid connection between the newly-added window sash 4 and the existing window sash 2, the purpose of limiting the newly-added window sash and the existing window sash is achieved, and the situation that the newly-added window sash 4 and the existing window sash 2 collide with each other due to breeze blowing is avoided. In addition, when the double-layer window is required to be cleaned, the fastener 11 of the linkage device is only needed to be unfastened, and the newly added window sash 4 and the existing window sash 2 are separated.
The repair and reinforcement of the historical buildings need to strictly maintain the facade style, the facing materials and the colors of the original buildings without changing the main structure and the plane layout of the interior and important internal facilities and decorations. In order to not influence the historical reality of a historical building and keep the historical reality of the historical building as faithful as possible to the existing style and structure, the original building structure is reinforced and maintained basically according to the principle of repairing the old building structure, damaged building components are repaired, and the structure system of the original building is not changed. The existing external window is the window of the building, and the newly added internal window is the window which is manufactured again according to the characteristics and the requirements of the existing external window and the building.
In order to save indoor space, windows are generally opened to the outside. In order to ensure that the newly added window sash 4 can be smoothly opened outdoors, the height of the newly added window sash 4 is less than or equal to the distance between the upper edge and the lower edge of the existing window frame 1, and the width of the newly added window sash 4 is less than or equal to the distance between the left edge and the right edge of the existing window frame 1. The situation that the existing outer window is opened indoors is not eliminated, similarly, in order to ensure that the existing window sash 2 can be smoothly opened indoors, the height of the existing window sash 2 is smaller than or equal to the distance between the upper edge and the lower edge of the newly-added window frame 3, and the width of the existing window sash 2 is smaller than or equal to the distance between the left edge and the right edge of the newly-added window frame 3.
Further, the limiting device comprises a first fixing ring 12 and a second fixing ring 13 which are arranged on the lower edge of the newly added window sash 4 and a third fixing ring 14 which is arranged on the lower edge of the existing window sash 2, a limiting rod 15 is connected to the first fixing ring 12 in a rotating mode, a spring 16 is arranged at the other end of the limiting rod 15, a hook 17 is arranged at the tail end of the spring 16, and the limiting rod 15 can rotate to the hook 17 to be buckled with the second fixing ring 13 and the third fixing ring 14. Under the condition that the double-layer window is closed, the hook 17 is overlapped on the second fixing ring 13, and under the condition that the double-layer window is opened, the hook 17 is overlapped on the third fixing ring 14, so that the limiting rod 15 is supported between the existing window sash 2 and the newly-added window sash 4 to play a limiting role. Wherein the spring 16 serves to facilitate the overlap.
Further, in order to ensure that the newly added window sash 4 and the existing window sash 2 can be opened to the maximum angle respectively, the length of the flexible connecting piece 8 is at least equal to the distance H between the newly added window sash 4 and the existing window sash 2 when the two are opened to the maximum angle. The distance H is not a vertical distance between the new window sash 4 and the existing window sash 2, but a straight distance from the fastener 11 to the fixing portion 6. Specifically, the flexible connecting member 8 includes, by way of example: chains, cords, ropes, springs, and elastic bands, among others.
Preferably, the flexible connection member 8 has elasticity, and the length of the flexible connection member 8 in the natural state is at least equal to the distance H between the newly added window sash 4 and the existing window sash 2 when the two are closed, and the length of the flexible connection member 8 in the extended state is at least equal to the distance H between the newly added window sash 4 and the existing window sash 2 when the two are opened. Specifically, the flexible connecting member 8 includes, by way of example: springs and elastic bands, etc. More preferably, the flexible connecting element 8 is a spring, in which case the limiting means can also be omitted.
Further, in order to avoid the slippage of the flexible connecting piece 8 from the connecting part 7 when the double-layer window is opened and closed, in one possible implementation mode, the connecting part 7 is set to be L-shaped, the abdicating notch 9 is located at the top end of the side edge of the L-shaped, and the flexible connecting piece 8 can only slide in the horizontal sliding way 10 of the L-shaped when the double-layer window is opened and closed. In another possible embodiment, the connecting portion 7 is a linear type, the edge of the abdicating notch 9 is provided with a pin 18, the pin 18 is rotatably connected with a cover plate 19, the cover plate 19 can be rotated to the abdicating notch 9 and cover the top of the abdicating notch 9, the cover plate 18 obstructs the movement of the fastener 11, and the fastener 11 is prevented from slipping from the slide way 10.
Further, in consideration of the non-destructive fixation of the fixing portion 6 and the third fixing ring 14 to the existing window sash 2, the change of the original appearance of the existing window sash 2 is minimized, the fixing portion 6 and the existing window sash 2 are adhesively fixed by an adhesive, and the third fixing ring 14 and the existing window sash 2 are also adhesively fixed by an adhesive. It will be understood that, in the case of an adhesive manner, the base of the third fixing ring 14 may be provided with a fixing ring base plate 20, and then the third fixing ring may be fixed to the existing window sash 2 by the fixing ring base plate 20. The connection manner between the connection portion 7, the first fixing ring 12, the second fixing ring 13 and the new window sash 4 is not particularly limited, and for example, bonding, bolt fixing, welding, etc. may be adopted.
The connection between the newly added window frame 3 and the wall and the connection between the newly added window frame 3 and the newly added window sash 4 may refer to the prior art, which does not belong to the key point of the present invention, and are not described herein again. Further, considering that the old window frame is repaired and the wall of the historical building is prevented from being damaged, the new window frame 3 is detachably fixed. Specifically, seted up the fixed slot around newly-increased window frame 3, can dismantle in the fixed slot and be connected with the regulation foot, adjust the foot including with fixed slot threaded connection's screw rod 21 and set up the lower margin 22 in the screw rod 21 bottom, adjust the height of newly-increased window frame 3 regulation foot all around through the length of adjusting screw rod 21 in the fixed slot for adjust the tight windowsill four sides in foot top and reach the fixed purpose that newly-increased window frame 3.
Further, the bottoms of the feet 22 are provided with rubber pads 23, so that damage of the feet 22 to a wall body of the windowsill is reduced.
Further, an arc-shaped adjusting plate 24 is arranged on the screw rod 21, so that the screw rod 21 can be conveniently rotated to adjust the height.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and shall be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (5)

1. A double-layer window suitable for protecting historical buildings comprises an existing outer window and a newly-increased inner window arranged on the inner side of the existing outer window, wherein the existing outer window comprises an existing window frame and an existing window sash, and the newly-increased inner window comprises a newly-increased window frame and a newly-increased window sash; the flexible connecting piece has elasticity, the length of the flexible connecting piece in a natural state is at least equal to the distance H between the newly added window sash and the existing window sash when the newly added window sash and the existing window sash are closed, and the length of the flexible connecting piece in an extension state is at least equal to the distance H between the newly added window sash and the existing window sash when the newly added window sash and the existing window sash are opened; the surface of the connecting part is provided with an abdicating notch and a slideway which is positioned on one side of the abdicating notch and is communicated with the abdicating notch, one end of the flexible connecting piece is fixedly connected with the fixing part, and the other end of the flexible connecting piece is provided with a fastener which can enter the slideway through the abdicating notch and slide in the slideway; the limiting device comprises a first fixing ring and a second fixing ring which are arranged at the lower edge of the newly-added window sash, and a third fixing ring which is arranged at the lower edge of the existing window sash, wherein a limiting rod is rotatably connected to the first fixing ring, a spring is arranged at the other end of the limiting rod, a hook is arranged at the tail end of the spring, and the limiting rod can rotate until the hook is buckled with the second fixing ring and the third fixing ring; the connecting part is L-shaped, and the abdicating notch is positioned at the top end of the side edge of the L shape; or the connecting part is linear, the edge of the abdicating notch is provided with a pin shaft, the pin shaft is rotatably connected with a cover plate, and the cover plate can rotate to the abdicating notch and cover the top of the abdicating notch.
2. The double-layer window suitable for protecting historical buildings according to claim 1, wherein the fixing portion and the existing window sash are adhesively fixed through an adhesive, and a fixing ring base plate is arranged at the bottom of the third fixing ring and is also adhesively fixed through the adhesive.
3. The double-layer window suitable for protecting historical buildings according to claim 1, wherein fixing grooves are formed in the periphery of the newly-added window frame, adjusting feet are detachably connected into the fixing grooves, and each adjusting foot comprises a screw rod in threaded connection with the corresponding fixing groove and a foot arranged at the bottom of the screw rod.
4. The double-layer window suitable for protecting historical buildings according to claim 3, wherein the bottom of the ground foot is provided with a rubber pad.
5. The double-layered window for protecting historical buildings according to claim 3, wherein an arc-shaped adjusting plate is provided on the screw.
CN202110810388.1A 2021-07-16 2021-07-16 Double-layer window suitable for protecting historical buildings Active CN113417542B (en)

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