Detachable and adjustable connecting structure of existing building external wall heat preservation decorative plate

Abstract

The invention discloses a detachable and adjustable connecting structure for an existing building outer wall heat-preservation decorative plate, belongs to the technical field of building outer wall maintenance systems, and solves the problems that an existing heat-preservation decorative plate is difficult to disassemble and assemble, has a heat bridge effect, has sealing defects and the like. According to the connecting mode, a connecting device is arranged between a base layer wall and a heat preservation decorative plate, a heat insulation cushion block is additionally arranged between the base layer wall and a fixed base, the connecting device comprises the fixed base, a screw, a bottom plate with a preset hole and the like, a spring on the side of the bottom plate and a steel plate abut against the plate to achieve leveling, and a flexible waterproof layer is arranged at the tail end of the screw. Replaceable water stop sealing rubber strips are embedded in sealing grooves in the periphery of the plate. Independent and lossless disassembly and assembly of the thermal insulation decorative plate single plates can be achieved, accurate leveling can be achieved, a thermal bridge can be effectively blocked, the sealing waterproof performance is improved, parts can be repeatedly used, the maintenance and reconstruction cost is reduced, and the method is suitable for reconstruction, installation and later maintenance of existing building outer wall thermal insulation decorative plates.

Description

Technical Field

[0001] This invention relates to the field of building exterior wall maintenance systems, specifically to a detachable and adjustable connection structure for existing building exterior wall insulation and decorative panels. Background Technology

[0002] Thermal insulation decorative panels are a new type of building exterior wall material that integrates multiple functions such as thermal insulation, decoration, and fire resistance. With advantages such as low thermal conductivity, diverse surface effects, and customizable colors and textures, they have been widely used in residential, commercial, industrial, public buildings, and existing building renovation projects in recent years. Currently, on-site construction of thermal insulation decorative panels mostly adopts a combination of adhesive and anchoring, and tongue-and-groove splicing methods. The surface finish can be made with various effects such as fluorocarbon paint, real stone paint, water-based sand coating, imitation brick, stone, and aluminum panels, which can meet the design needs of different architectural styles.

[0003] However, the current market for thermal insulation decorative panels still faces many technical challenges in terms of connection and installation, specifically:

[0004] The installation methods are limited. Most existing thermal insulation decorative panels adopt a composite installation method of dry hanging and adhesive bonding. The panels cannot be removed after installation and do not have the conditions for reuse or individual replacement.

[0005] There is a problem of "pseudo-disassembly". Although some external wall insulation systems claim to be removable, they cannot be disassembled in a single point, independently and without damage. The disassembly operation requires disassembling a large area sequentially from the edge, which is cumbersome and affects the surrounding panels.

[0006] Disassembly results in significant losses. During the disassembly process, the insulation and decorative panels themselves and their connecting parts are easily damaged, making them difficult to reuse directly and increasing the cost of maintenance and renovation.

[0007] Thermal bridging and sealing defects: movable connectors are usually made of metal, which can easily form linear thermal bridges, affecting the overall thermal performance of the building. At the same time, the airtightness and watertightness of the joints between the panels are difficult to guarantee, which can easily lead to problems such as water seepage and air leakage.

[0008] To address the shortcomings of the existing technologies, there is an urgent need to develop a connection structure and construction method for thermal insulation decorative panels that allows for independent assembly and disassembly of individual panels, effectively solves the thermal bridging effect, ensures sealing performance, and is easy to construct, so as to meet the sustainable development needs of the renovation and maintenance of existing building exterior walls throughout their entire life cycle. Summary of the Invention

[0009] The purpose of this invention is to provide a detachable and adjustable connection structure for existing building exterior wall insulation and decorative panels, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a detachable and adjustable connection structure for an existing building exterior wall insulation and decorative panel, comprising a base wall and an insulation and decorative panel, wherein the base wall is the original exterior wall of the existing building, and the base wall and the insulation device are fixed together by a connection device;

[0011] The connecting device includes a fixed base, a base plate with a pre-set opening, a screw, and a flexible waterproof layer;

[0012] The base is fixed to the base wall. The base has a screw hole that matches the screw rod on the side near the insulation decorative panel. The threaded end of the screw rod is screwed into the screw hole. The four corners of the insulation decorative panel have notches to avoid the screw rod. The tail end of the screw rod is wrapped with a flexible waterproof layer and pressed against the outside of the insulation decorative panel. The base plate with a pre-set hole is fixed to one end of the screw hole of the base. The base plate with the pre-set hole is fixed with a spring and a steel plate in sequence on the side facing the insulation decorative panel. The elastic force of the spring pushes the steel plate against the insulation decorative panel, so that the insulation decorative panel and the steel plate fit tightly together and level the insulation decorative panel.

[0013] Preferably, it also includes a heat insulation pad and expansion bolts. The heat insulation pad is disposed between the base wall and the fixed base, and the expansion bolts pass through the fixed base and the heat insulation pad in sequence and are anchored to the base wall.

[0014] Preferably, the thermal insulation decorative panel is provided with sealing grooves around its perimeter, and replaceable water-stop sealing strips are embedded in the sealing grooves.

[0015] Preferably, the steel plate consists of an arc-shaped sidewall and a flat sidewall. The arc-shaped sidewall is slidably inserted into the guide groove of the bottom plate sidewall with a preset opening, and the flat sidewall abuts against the end of the spring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. It enables independent and non-destructive disassembly and assembly of single panels, solving the problem of "pseudo-disassembly" in existing technologies. The disassembly operation does not require disassembling the surrounding panels, and there is no hard collision damage to the panels and connectors during the disassembly process. The components can be reused, which greatly reduces the material and construction costs of later maintenance and renovation of building exterior walls.

[0018] 2. It has a precise independent leveling function. Through the cooperation structure of spring and screw, the four corners of the insulation and decorative panel can be independently leveled. The elastic force makes the steel plate and the panel fit tightly together, effectively ensuring the flatness of the panel installation. The leveling operation is simple and adaptable to the need for fine adjustment of the panel position later.

[0019] 3. Effectively blocks the thermal bridge effect. By setting up thermal insulation pads between the base wall and the metal fixing base, the heat conduction path between the metal connector and the wall is cut off, avoiding the formation of linear thermal bridges, improving the overall thermal performance of the building exterior wall, and meeting the requirements of building energy conservation.

[0020] 4. Excellent sealing and waterproof performance and convenient maintenance. The screw tail end is equipped with a flexible waterproof layer, and the sealing groove around the board is embedded with replaceable water-stop sealing strips, forming double sealing protection. This effectively solves the problems of water seepage and air leakage at the joints and connections of the boards. Moreover, the water-stop sealing strips can be removed and replaced separately without disassembling the board, reducing the difficulty of later sealing maintenance. Attached Figure Description

[0021] Figure 1 3D model of exterior wall insulation and decorative panel;

[0022] Figure 2 This is a side view of an exterior wall insulation and decorative panel.

[0023] Figure 3 Top view of exterior wall insulation and decorative panel;

[0024] Figure 4 A 3D diagram of the connecting device;

[0025] Figure 5 Exploded view of the connecting device;

[0026] Figure 6 This is a schematic diagram of the steel plate and spring assembly.

[0027] Figure 7 for Figure 6 Exploded view;

[0028] Figure 8 This is a 3D model of an insulated decorative panel.

[0029] In the diagram: 1. Base wall; 2. Insulation pad; 3. Connecting device; 4. Water-stop sealing strip; 5. Thermal insulation decorative board; 6. Sealing groove; 7. Fixed base; 8. Connecting plug; 9. Spring; 10. Steel plate; 11. Base plate for pre-set opening; 12. Expansion bolt; 13. Flexible waterproof layer; 14. Screw; 15. Guide groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The detachable and adjustable connection structure for the thermal insulation decorative panels of existing building exterior walls described in this invention is suitable for the installation, renovation, and subsequent maintenance and replacement of thermal insulation decorative panels on various existing building exterior walls. Its core functionality lies in the flexible fixing of the base wall 1 and the thermal insulation decorative panel 5 via the connecting device 3. Combined with heat insulation, sealing, and leveling structures, it solves problems such as difficult disassembly and assembly, thermal bridging, and sealing defects in existing installation methods. The following description, in conjunction with the appendix... Figure 1 The specific embodiments of the present invention are described in detail below, including the markings of each component. All components used in this embodiment are adapted to the load, weather resistance and thermal performance requirements of existing building exterior wall construction.

[0032] I. Pre-construction preparation

[0033] The existing building's base wall 1 is surface-treated to remove floating dust, hollow areas, peeling layers, and original decorative attachments. The wall surface is leveled and reinforced to ensure the flatness and structural strength of the base wall 1 and to meet the anchoring requirements of the expansion bolts 12.

[0034] Prefabricated insulation decorative panel 5, with notches made at the four corners of the panel to match the size of screw 14. The size of the notches is such that screw 14 can be smoothly avoided without affecting the fixing of the panel. At the same time, sealing grooves 6 are prefabricated around the insulation decorative panel 5. The size of the sealing grooves 6 matches the water-stop sealing strip 4.

[0035] Prefabricate and test the components of the connecting device 3, including the fixed base 7, the base plate 11 with a pre-set opening, the connecting plug 8 (screw 14, flexible waterproof layer 13), the spring 9, and the steel plate 10. Pre-fix the spring 9 to the steel plate 10, check the thread compatibility between the screw 14 and the screw hole on the fixed base 7, and prepare the heat insulation pad 2, expansion bolt 12, and replaceable water-stop sealing strip 4. The flexible waterproof layer 13 is made of weather-resistant, waterproof, and flexible polymer material, and the water-stop sealing strip 4 is made of aging-resistant and elastic rubber material.

[0036] II. Installation steps of connecting devices and thermal insulation decorative panels

[0037] Step 1: Secure the heat insulation pad to the base.

[0038] The heat insulation pad 2 is attached to the preset installation position of the base wall 1. The heat insulation pad 2 is made of heat-insulating and flame-retardant rigid insulation material, which effectively blocks the heat conduction between the metal connector and the base wall 1 and avoids the linear thermal bridge effect. The fixing base 7 is attached to the side of the heat insulation pad 2 away from the base wall 1. The expansion bolts 12 are passed through the fixing base 7 and the heat insulation pad 2 in sequence and screwed into the base wall 1 for anchoring. The anchoring depth and spacing of the expansion bolts 12 comply with the existing building exterior wall construction specifications. After tightening, the fixing base 7 and the base wall 1 are firmly connected. Four sets of the above-mentioned fixing bases 7 and matching heat insulation pads 2 are set at the four corners of a single heat-insulating decorative panel 5.

[0039] Step 2: Assemble the base plate, springs, and steel plates.

[0040] The base plate 11 with a pre-set opening is installed on the end of the fixed base 7 with a screw hole by welding or bolting. The pre-set opening of the base plate 11 with the pre-set opening is coaxial with the screw hole, so as not to affect the screw 14 screwing in. On the side of the base plate 11 with the pre-set opening facing the heat insulation decorative panel 5, the spring 9 and the steel plate 10 are fixed in sequence. One end of the spring 9 is welded to the base plate 11 and the other end is welded to the steel plate 10. The steel plate 10 is a thin hard metal plate to ensure the contact area with the heat insulation decorative panel 5. At this time, the spring 9 is in a naturally extended state to provide elastic force for subsequent leveling.

[0041] Step 3: Preliminary positioning of the thermal insulation decorative panels

[0042] The prefabricated insulation decorative panel 5 is hoisted to the preset installation position. The notches at the four corners of the panel are precisely aligned with the installation positions of the screws 14 on the fixed base 7. The panel is slowly lowered so that the inner side of the insulation decorative panel 5 is fully in contact with the steel plate 10. At this time, the initial positioning of the insulation decorative panel 5 is achieved by using the support of the steel plate 10. During the placement of the panel, collisions between the notches and metal parts such as the fixed base 7 should be avoided to prevent damage to the panel.

[0043] Step 4: Screw assembly and flexible waterproofing

[0044] The threaded end of the screw 14 is passed through the pre-set hole of the base plate 11 with a pre-set opening and screwed into the screw hole of the fixing base 7. The screwing depth of the screw 14 is adjusted according to the installation thickness of the insulation decorative panel 5 so that the tail end of the screw 14 extends to the outside of the insulation decorative panel 5. The tail end of the screw 14 is completely wrapped with a flexible waterproof layer 13, and the edge of the flexible waterproof layer 13 is tightly pressed against the outer surface of the insulation decorative panel 5 to achieve a waterproof seal at the installation position of the screw 14 and prevent rainwater from seeping in from the gap between the screw and the panel.

[0045] Step 5: Sealing the joints between the panels

[0046] The water-stop sealing strip 4 is embedded into the sealing groove 6 around the thermal insulation decorative panel 5. The water-stop sealing strip 4 is installed in an embedded manner to ensure a tight fit with the sealing groove 6. The joints between adjacent thermal insulation decorative panels 5 are sealed by overlapping the water-stop sealing strip 4. After completion, check the sealing effect to ensure the air tightness and water tightness of the joints and prevent water seepage and air leakage.

[0047] III. Leveling Operation of Insulated Decorative Panels

[0048] This invention achieves precise leveling of the thermal insulation decorative panel 5 through the cooperative structure of spring 9 and screw 14, and supports independent leveling at a single point without disassembling surrounding panels.

[0049] If the insulation decorative panel 5 is tilted, warped, or not tightly attached to the steel plate 10 after installation, its extension length can be adjusted by turning the screw 14. When the screw 14 is turned outward, it forms a slight push on the outer side of the insulation decorative panel 5. Combined with the elastic push force of the spring 9 on the inner side of the insulation decorative panel 5, the steel plate 10 and the inner side of the insulation decorative panel 5 are always tightly attached.

[0050] For the different height differences at the four corners of the thermal insulation decorative panel 5, the screws 14 at the corresponding positions are independently turned and adjusted. Using the flexible buffer of the spring 9, the thermal insulation decorative panel 5 is gradually adjusted to a horizontal state. After leveling, it is confirmed that the screws 14 are not loose and the flexible waterproof layer 13 still remains tightly wrapped.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable and adjustable connection structure for an existing building exterior wall insulation and decorative panel, comprising a base wall (1) and an insulation and decorative panel (5), wherein the base wall (1) is the original exterior wall of the existing building, characterized in that: The base wall (1) and the insulation device (5) are fixed together by a connecting device (3); The connecting device (3) includes a fixed base (7), a base plate (11) with a pre-set opening, a screw (14) and a flexible waterproof layer (13). The fixed base (7) and the base wall (1) are fixed. The fixed base (7) is provided with a screw hole that matches the screw (14) on the side of the insulation decorative panel (5). The threaded end of the screw (14) is screwed into the screw hole. The four corners of the insulation decorative panel (5) are provided with notches to avoid the screw (14). The tail end of the screw (14) is wrapped by the flexible waterproof layer (13) and pressed against the outside of the insulation decorative panel (5). The base plate (11) with a pre-set hole is fixed at one end of the screw hole of the fixed base (7). The base plate (11) with the pre-set hole is fixed with a spring (9) and a steel plate (10) on the side of the insulation decorative panel (5) in sequence. The elastic force of the spring (9) pushes the steel plate (10) against the insulation decorative panel (5) so that the insulation decorative panel (5) and the steel plate (10) fit tightly together and the insulation decorative panel (5) is leveled.

2. The detachable and adjustable connection structure for the exterior wall insulation and decorative panel of existing buildings according to claim 1, characterized in that: It also includes a heat insulation pad (2) and an expansion bolt (12). The heat insulation pad (2) is placed between the base wall (1) and the fixed base (7). The expansion bolt (12) passes through the fixed base (7) and the heat insulation pad (2) in sequence and is anchored to the base wall (1).

3. The detachable and adjustable connection structure for the exterior wall insulation and decorative panel of existing buildings according to claim 1, characterized in that: A sealing groove (6) is provided around the thermal insulation decorative panel (5), and a replaceable water-stop sealing strip (4) is embedded in the sealing groove (6).

4. The detachable and adjustable connection structure for the exterior wall insulation and decorative panel of existing buildings according to claim 1, characterized in that: The steel plate (10) consists of an arc-shaped sidewall and a flat wall. The arc-shaped sidewall is slidably inserted into the guide groove (15) of the sidewall of the base plate (11) with a pre-set opening, and the flat wall abuts against the end of the spring (9).

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