Multi-cavity broken bridge aluminum door and window

Abstract

This invention relates to the field of thermally broken aluminum windows and doors, and discloses a multi-cavity thermally broken aluminum window and door, including a frame, which comprises an outer frame, an inner frame, and a thermal break strip connecting the two. The thermal break strip has connecting feet at both ends, each connecting foot including a first swing block and a second swing block that can open relative to each other. A connecting channel is disposed within the first and second swing blocks, and a wear layer is left between the end of the connecting channel and the outer walls of the first and second swing blocks. A compensation component includes a trapezoidal block disposed between the first and second swing blocks. A breakable wire is connected at both ends to the first and second swing blocks respectively. When the wear layer is worn through, the compensation component drives the trapezoidal block to move outward, pushing the first and second swing blocks to open outward, compensating for the wear gap. When the swing blocks open to their limit, the breakable wire breaks, triggering a warning signal. This invention achieves automatic compensation and replacement reminders for wear at the connection between the thermal break strip and the aluminum profile.

Description

Technical Field

[0001] This invention relates to the field of thermally broken aluminum doors and windows, specifically to a multi-cavity thermally broken aluminum door and window. Background Technology

[0002] Thermally broken aluminum windows and doors are high-performance window and door products widely used in modern buildings. They mainly consist of an outer frame, an inner frame, and a thermal break strip connecting the two. The thermal break strip separates and tightly connects the two layers of aluminum profiles into a whole, forming an insulated profile. Compared with traditional windows and doors, traditional aluminum profiles have a high thermal conductivity, allowing heat to be quickly conducted through the window and door frame, leading to frequent heat exchange between the indoor and outdoor environments. In winter, a large amount of indoor heat is lost to the outdoors, increasing heating energy consumption; in summer, outdoor heat is quickly transferred into the room, increasing the air conditioning cooling load. Thermally broken aluminum windows and doors effectively block heat conduction channels through the thermal break strip, significantly reducing the heat transfer coefficient of the window and door frame. Furthermore, the multi-cavity structure design of the thermal break strip and frame profiles utilizes the still air layer within the cavities to reduce convective heat transfer, further improving thermal insulation performance and meeting building energy conservation requirements.

[0003] However, in actual use, existing thermally broken aluminum windows and doors experience repeated impacts when the window sash is forcefully closed or blown shut by wind, causing it to repeatedly collide with the window frame fixed to the wall. Since the strength of the aluminum profile is higher than that of the thermal break strip, the impact primarily causes compression and relative sliding at the connection between the thermal break strip and the aluminum profile. After repeated impacts with the window frame, the contact surface between the thermal break strip and the aluminum profile gradually wears down. This leads to two problems: firstly, the connecting feet between the thermal break strip and the aluminum profile loosen, resulting in insecure glass fixation and reduced frame structural stability; secondly, it damages the sealing fit between the thermal break strip and the aluminum profile, reducing airtightness and watertightness. Hot and cold air can then penetrate through the wear gaps, weakening the thermal insulation effect of the thermal break structure and directly reducing the overall energy-saving performance of the aluminum windows and doors. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-cavity thermally broken aluminum window and door to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A multi-cavity thermally broken aluminum window and door, comprising: A frame, in which glass is fixed, the frame includes an outer frame, an inner frame and a heat insulation strip connecting the two; The heat insulation strip has connecting feet at both ends that are interference-fitted with the mounting grooves on the outer frame and the inner frame, and the connecting feet include a first swing block and a second swing block that can be opened relative to each other; A connecting channel is provided inside the first and second swing blocks, and a wear layer of a predetermined thickness is left between the end of the connecting channel and the outer wall of the first and second swing blocks. A compensation component, disposed within the connecting foot, includes a trapezoidal block disposed between the first swing block and the second swing block. When the wear layer is worn through, the trapezoidal block is driven to move, causing the first swing block and the second swing block to open outward. The easily broken wire is connected to the first and second pendulum blocks at both ends. When the first and second pendulum blocks open outward to a preset limit value, it is pulled off and a warning signal is triggered.

[0006] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, the compensation component further includes a fixed cylinder, a piston slidably disposed in the fixed cylinder, and a foaming unit disposed in the fixed cylinder. The trapezoidal block is fixed to the end of the piston, and the foaming unit pushes the piston to move outward after foaming.

[0007] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, wherein: a sliding rod is slidably passed through the side wall of the fixed cylinder, the two ends of the sliding rod respectively extend into the two connecting channels, and elastic ropes in a taut state are respectively connected between the two ends of the sliding rod and the inner wall of the end of the connecting channel; a diaphragm is fixed to the outside of the sliding rod, and the edge of the diaphragm is fixedly connected to the inner wall of the fixed cylinder and the piston respectively; the fixed cylinder is divided into a first cavity and a second cavity by the diaphragm.

[0008] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, the first cavity and the second cavity respectively contain two kinds of foaming units. When the wear layer on one side is worn through, the corresponding elastic rope end fails to be fixed, and the elastic rope on the other side pulls the slide rod to tear the diaphragm, so that the two raw materials are mixed and foamed.

[0009] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, wherein: a reaction chamber is formed between the side of the piston away from the trapezoidal block and the fixed cylinder, the volume of the reaction chamber is smaller than the volume of the foaming unit after natural foaming and expansion, so that the elastomer formed by foaming and solidification is in a compressed state and stores elastic potential energy, which is used to continuously push the piston to move outward to achieve dynamic wear compensation.

[0010] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, the foaming unit includes an isocyanate raw material section and a polyol raw material section, wherein the isocyanate raw material section is polymeric MDI, and the polyol raw material section includes polyester polyol, water and catalyst.

[0011] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, wherein: a triangular block is fixed on the inner side of both the first swing block and the second swing block, and the two triangular blocks respectively abut against the two sides of the trapezoidal block, for transmitting the driving force of the trapezoidal block to the first swing block and the second swing block.

[0012] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, a switch seat is provided on both the outer frame and the inner frame at the corresponding position of the compensation component. A spring is fixed at one end of the switch seat. A contact is provided at the free end of the spring and at the corresponding position of the switch seat. The easily broken wire passes around the spring and is in a tensioned state. When the easily broken wire breaks, the spring resets and the two contacts come into contact to generate the warning signal.

[0013] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, it further includes a warning light, which is electrically connected to the contacts on the switch base and is used to emit a light warning when the contacts are turned on.

[0014] As a preferred embodiment of the multi-cavity thermally broken aluminum window and door of the present invention, wherein: the fracture threshold of the easily broken wire corresponds to the tension applied by the spring sheet to the easily broken wire when the first swing block and the second swing block reach the preset maximum safe deflection angle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting a compensation component and a breakable wire inside the connecting foot of the thermal insulation strip, allows the compensation component to drive the trapezoidal block to move outward when the wear layer at the end of the connecting channel is worn through. This pushes the first and second swing blocks to open outward, compensating for the wear gap. When the compensation reaches its limit, the breakable wire breaks to trigger a warning signal. This achieves automatic compensation and replacement reminder for the wear at the connection between the thermal insulation strip and the aluminum profile, effectively maintaining the structural strength and sealing performance of thermally broken aluminum windows and doors, thereby improving the overall energy-saving performance of thermally broken aluminum windows and doors.

[0016] The compensation component uses foaming units as the driving source. Under normal conditions, the diaphragm separates the two foaming units into the first and second cavities. When the wear layer is worn through, the end of the elastic rope fails to be fixed, and the other elastic rope, which is in a taut state, contracts and pulls the slide bar to move, tearing the diaphragm. This causes the two raw materials to mix and foam and expand. This chemical foaming driving method does not require external energy input, has a compact structure, and reacts quickly. It can complete the compensation operation at the moment wear occurs, promptly restoring the sealing fit between the thermal insulation strip and the aluminum profile, and preventing the penetration of hot and cold air due to the widening of the gap, thereby ensuring the energy-saving performance of doors and windows.

[0017] The reaction chamber formed between the side of the piston away from the trapezoidal block and the fixed cylinder has a volume smaller than that of the foaming unit after natural foaming and expansion. This keeps the elastomer formed by the foaming and solidification in a compressed state and stores elastic potential energy. During subsequent use, when a small gap is generated between the first swing block, the second swing block and the mounting groove due to further wear, the compressed elastomer releases its elastic potential energy, continuously pushing the piston and the trapezoidal block to move outward slightly. The trapezoidal block then pushes the first and second swing blocks to open further outward, filling the wear gap in real time. This significantly extends the service life and maintenance cycle of the thermal insulation strip, while maintaining the thermal insulation effect of the thermal break structure for a long time, reducing the building's heating and cooling energy consumption.

[0018] The easy-break wire is connected between the ends of the first and second swing blocks. The outer and inner frames are equipped with switch bases and springs. The easy-break wire passes around the spring and is in a tensioned state. When the first and second swing blocks gradually open outward due to continuous compensation and reach the preset maximum safe deflection angle, the tension applied to the easy-break wire by the bending of the spring exceeds its fracture threshold. The easy-break wire breaks instantly, and the spring resets to make the two contacts come into contact, generating a warning signal. This can promptly remind the user to replace the thermal insulation strip or window sash, avoiding safety risks caused by excessive wear.

[0019] Both ends of the slide bar are connected to the inner wall of the connecting channel via elastic ropes, so that no matter which side's wear layer is worn through first, the slide bar can be moved by the elastic rope on the other side, which is in a taut state, to achieve diaphragm tearing and foaming triggering, ensuring that the compensation components can be reliably started and improving the triggering reliability of the compensation operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the frame assembly of the present invention.

[0021] Figure 2 This is a schematic diagram of the first cross-sectional structure of the frame portion of the present invention.

[0022] Figure 3 This is a schematic diagram of the second cross-sectional structure assembled on the frame portion of the present invention.

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the heat insulation strip assembly of the present invention.

[0024] Figure 5 This is a schematic cross-sectional view of the assembly structure of the second swing block of the present invention.

[0025] Figure 6 This is a schematic cross-sectional view of the compensation component assembly of the present invention.

[0026] Figure 7 for Figure 6 A magnified structural diagram at point A.

[0027] Figure 8This is a schematic cross-sectional view of the triangular block assembly structure of the present invention.

[0028] Figure 9 This is a cross-sectional view of the fixed cylinder assembly structure of the present invention.

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the easily broken wire assembly of the present invention.

[0030] Figure 11 This is a schematic diagram of the warning light connection circuit of the present invention.

[0031] In the diagram: 1. Frame; 11. Outer frame; 12. Inner frame; 13. Heat insulation strip; 131. First swing block; 132. Second swing block; 133. Connecting channel; 134. Triangular block; 2. Glass; 3. Compensation component; 31. Fixing cylinder; 32. Diaphragm; 33. Slide rod; 34. Elastic rope; 35. Piston; 36. Trapezoidal block; 37. Fragile wire; 38. Switch base; 381. Spring; 382. Contact; 39. Warning light. Detailed Implementation

[0032] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific configurations and algorithms presented below, but covers any modifications, substitutions, and improvements to elements, components, and algorithms without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description in order to avoid unnecessarily obscuring the invention.

[0033] Example 1, referring to Figures 1-11 The first embodiment of the present invention provides a multi-cavity thermally broken aluminum window and door, which includes a frame 1, with glass 2 fixed inside. The frame 1 includes an outer frame 11, an inner frame 12, and a thermal insulation strip 13 connecting the two. The heat insulation strip 13 has connecting feet at both ends that are interference fit with the mounting grooves on the outer frame 11 and the inner frame 12, and the connecting feet include a first swing block 131 and a second swing block 132 that can be opened relative to each other; A connecting channel 133 is disposed within the first swing block 131 and the second swing block 132, and a wear layer of a predetermined thickness is left between the end of the connecting channel 133 and the outer wall of the first swing block 131 and the second swing block 132. The compensation component 3 is disposed inside the connecting foot and includes a trapezoidal block 36. The trapezoidal block 36 is disposed between the first swing block 131 and the second swing block 132. When the wear layer is worn through, the trapezoidal block 36 is driven to move, causing the first swing block 131 and the second swing block 132 to open outward. The easily broken wire 37 is connected to the first swing block 131 and the second swing block 132 at its two ends. When the first swing block 131 and the second swing block 132 open outward to the preset limit value, it is pulled off and a warning signal is triggered.

[0034] The Easy-Break filament 37 is made of polyester fiber material. Polyester fiber has excellent wear resistance and impact resistance. Its high breaking strength and dimensional stability enable the Easy-Break filament 37 to maintain stable mechanical properties during long-term use and accurately break when the preset tensile threshold is reached, ensuring reliable triggering of the warning signal.

[0035] Thermal insulation strip 13 is made of polyamide 66 composite material reinforced with 25% glass fiber. The addition of glass fiber significantly improves the rigidity and dimensional stability of the thermal insulation strip. The thermal insulation strip 13 material itself has an extremely low thermal conductivity, far lower than that of aluminum profiles, which can effectively block the heat conduction channel between the indoor and outdoor aluminum profiles.

[0036] Meanwhile, both the thermal insulation strip 13 and the frame profile adopt a multi-cavity structure design, which means that multiple independent and closed cavities are formed inside through partitions. These cavities run through the length of the profile. When heat is transferred, the multi-cavity structure, on the one hand, physically divides the profile into multiple small areas, using the still air layer inside the cavity as a thermal insulation medium, which can effectively reduce heat conduction; on the other hand, because the size of each individual cavity is small, the internal air is difficult to form an effective convection circulation due to temperature difference, thereby further inhibiting convective heat transfer. Thus, the low thermal conductivity material of the thermal insulation strip 13 and the multi-cavity structure work together to form a complete thermal insulation barrier, significantly reducing the heat transfer coefficient of the door and window frame and meeting the building energy conservation requirements.

[0037] During use, when the window sash is closed forcefully by hand or blown closed by wind, it repeatedly impacts the window frame. The outer sides of the first swing block 131 and the second swing block 132 slide relative to the inner wall of the mounting groove, causing the wear layer to gradually thin. When the wear layer is worn through, the end of the connecting channel 133 connects to the outside. The compensation component 3 is activated and drives the trapezoidal block 36 to move outward. When the trapezoidal block 36 moves outward, it pushes the first swing block 131 and the second swing block 132 to open outward, filling the wear gap, restoring the connection strength and sealing performance between the thermal insulation strip 13 and the aluminum profile, and preventing hot and cold air from penetrating through the wear gap, thereby ensuring the energy-saving performance of the doors and windows.

[0038] As the first swing block 131 and the second swing block 132 continue to open outward, the brittle wire 37 connected between their ends is gradually tightened. When the first swing block 131 and the second swing block 132 open outward to the preset limit value, the tension on the brittle wire 37 exceeds its fracture threshold, and the brittle wire 37 breaks instantly. After the brittle wire 37 breaks, a warning signal is triggered, prompting the user that the wear compensation of the thermal insulation strip 13 has reached its limit and the thermal insulation strip 13 or window sash needs to be replaced to avoid structural failure and safety risks caused by excessive wear.

[0039] In summary, the system achieves automatic compensation and replacement reminders for wear at the connection between the thermal break strip 13 and the aluminum profile, effectively maintaining the structural strength and sealing performance of thermally broken aluminum windows and doors, thereby improving the overall energy-saving performance of thermally broken aluminum windows and doors.

[0040] Example 2, refer to Figures 5-11 This is the second embodiment of the present invention, which differs from the first embodiment in that: The compensation component 3 also includes a fixed cylinder 31, a piston 35 slidably disposed in the fixed cylinder 31, and a foaming unit disposed in the fixed cylinder 31. The trapezoidal block 36 is fixed to the end of the piston 35. After the foaming unit reacts and foams, it pushes the piston 35 to move outward.

[0041] A sliding rod 33 slides through the side wall of the fixed cylinder 31. The two ends of the sliding rod 33 extend into two connecting channels 133 respectively. Elastic ropes 34 in a taut state are connected between the two ends of the sliding rod 33 and the inner wall of the end of the connecting channel 133 respectively. A diaphragm 32 is fixed to the outside of the sliding rod 33. The edge of the diaphragm 32 is fixedly connected to the inner wall of the fixed cylinder 31 and the piston 35 respectively. The fixed cylinder 31 is divided into a first cavity and a second cavity by the diaphragm 32.

[0042] The first and second cavities respectively contain two types of foaming units. When the wear layer on one side is worn through, the corresponding end of the elastic rope 34 fails to be fixed, and the elastic rope 34 on the other side pulls the slide bar 33 to tear the diaphragm 32, causing the two raw materials to mix and foam.

[0043] The side of piston 35 away from trapezoidal block 36 forms a reaction chamber with fixed cylinder 31. The volume of the reaction chamber is smaller than the volume of the foaming unit after natural foaming and expansion, so that the elastomer formed by foaming and solidification is in a compressed state and stores elastic potential energy, which is used to continuously push piston 35 to move outward to achieve dynamic wear compensation.

[0044] The foaming unit includes an isocyanate raw material section and a polyol raw material section. The isocyanate raw material section is polymeric MDI, and the polyol raw material section includes polyester polyol, water, and catalyst.

[0045] Triangular blocks 134 are fixed to the inner sides of the first pendulum block 131 and the second pendulum block 132. The two triangular blocks 134 abut against the two sides of the trapezoidal block 36 respectively, and are used to transmit the driving force of the trapezoidal block 36 to the first pendulum block 131 and the second pendulum block 132.

[0046] The working principle of the foaming reaction is as follows: the isocyanate groups (-NCO) in the polymerized MDI react with the hydroxyl groups (-OH) in the polyester polyol to form polyurethane polymer chains. Simultaneously, water reacts with the isocyanate groups to generate carbon dioxide gas, which acts as a foaming agent, causing the reaction mixture to expand and foam. A catalyst is used to accelerate the reaction process, allowing foaming to complete in a short time. During the reaction, the gas forms numerous tiny bubbles within the polymer melt. The expansion of these bubbles pushes the polymer outward, generating foaming thrust. The catalyst used in this embodiment enables the foaming system to complete foaming and curing in a short time at room temperature, without the need for external heating, meeting the requirements of room temperature triggering and rapid reaction in the window sash usage environment.

[0047] Polyurethane microporous elastomers formed after foaming and curing possess unique mechanical properties. On one hand, the cross-linked network formed between polyurethane molecular chains endows the elastomer with excellent resilience; on the other hand, the gas in the microporous structure is trapped within the pores, creating an effect similar to a "gas spring." Under the constraint that the volume of the reaction chamber is smaller than the volume of natural foam expansion, the foam is forced into a compressed state during the curing process, and the molecular chains of the pore walls are stretched and oriented, forming a structure similar to a "compression spring," thereby storing elastic potential energy.

[0048] During use, when the wear layer is worn through, the end of the connecting channel 133 on this side connects to the outside, and the corresponding end of the elastic rope 34 becomes unsecured. The elastic rope 34 on the other side, which is in a taut state, contracts and pulls the slide rod 33 to move. When the slide rod 33 moves, it causes the diaphragm 32 to tear, causing the two foaming units in the first and second cavities to mix and foam and expand. The pressure generated by the foam expansion pushes the piston 35 to move outward. The piston 35 drives the trapezoidal block 36 fixed at its end to move outward. When the trapezoidal block 36 moves outward, it interacts with its two ends. The wedge-shaped surfaces of the side-contacting triangular blocks 134 convert axial movement into radial opening of the first swing block 131 and the second swing block 132, pushing the first swing block 131 and the second swing block 132 outward to fill the wear gap and complete the initial compensation. This chemical foaming drive method requires no external energy input, has a compact structure, and reacts quickly. It can complete the compensation operation at the moment wear occurs, promptly restore the sealing fit between the thermal insulation strip 13 and the aluminum profile, and prevent the penetration of hot and cold air due to the expansion of the gap, thereby ensuring the energy-saving performance of the doors and windows.

[0049] After the initial compensation is completed, the compressed elastomer in the reaction chamber stores elastic potential energy. During subsequent use, when a small gap is generated between the first swing block 131, the second swing block 132 and the mounting groove due to further wear, the compressed elastomer releases elastic potential energy, continuously pushing the piston 35 and the trapezoidal block 36 to move outward slightly. Through the wedge-shaped cooperation of the trapezoidal block 36 and the triangular block 134, the first swing block 131 and the second swing block 132 are pushed to open outward further, filling the wear gap in real time and realizing dynamic continuous compensation.

[0050] This dynamic and continuous compensation mechanism ensures that the thermal break strip 13 and the aluminum profile always remain in close contact, preventing the sealing performance from deteriorating over time. This significantly extends the service life and maintenance cycle of the thermal break strip 13, while maintaining the thermal insulation effect of the thermal break structure for a long time, thus reducing the building's heating and cooling energy consumption.

[0051] The two ends of the slide rod 33 are connected to the inner wall of the end of the connecting channel 133 via elastic ropes 34, so that no matter which side's wear layer is worn through first, the slide rod 33 can be moved by the elastic rope 34 on the other side which is in a taut state. Specifically, when the wear layer on the side of the first swing block 131 is worn through first, the end of the elastic rope 34 on that side fails to be fixed, and the elastic rope 34 on the side of the second swing block 132, which is in a taut state, contracts and pulls the slide rod 33 to move. Conversely, when the wear layer on the side of the second swing block 132 is worn through first, the elastic rope 34 on the side of the first swing block 131, which is in a taut state, contracts and pulls the slide rod 33 to move. This symmetrical structural design ensures that the compensation component 3 can be reliably activated no matter which side of the heat insulation strip 13 experiences excessive wear first, improving the trigger reliability of the compensation operation.

[0052] The remaining structure is the same as that in Example 1.

[0053] Example 3, referring to Figures 5-11 This is the third embodiment of the present invention, which differs from the second embodiment in that: A switch base 38 is provided on both the outer frame 11 and the inner frame 12 at the corresponding position of the compensation component 3. A spring piece 381 is fixed at one end of the switch base 38. A contact 382 is provided at the free end of the spring piece 381 and at the corresponding position of the switch base 38. The easily broken wire 37 passes around the spring piece 381 and is in a tensioned state. When the easily broken wire 37 breaks, the spring piece 381 resets and the two contacts make contact to generate a warning signal.

[0054] It also includes a warning light 39, which is electrically connected to a contact 382 on a switch base 38, and is used to emit a light warning when the contact 382 is turned on.

[0055] The fracture threshold of the easily broken wire 37 corresponds to the tension applied by the spring piece 381 to the easily broken wire 37 when the first pendulum block 131 and the second pendulum block 132 reach the preset maximum safe deflection angle.

[0056] The easily broken wire 37 is made of polyester fiber material. By precisely controlling the diameter and material parameters of the easily broken wire 37, its breaking threshold can be matched with the preset maximum safe deflection angle. When the first swing block 131 and the second swing block 132 open to the limit angle, the tension applied to the easily broken wire 37 by the bending of the spring 381 just exceeds its breaking threshold. The easily broken wire 37 breaks instantly, the spring 381 resets and the contact point 382 contacts, and the warning light 39 lights up, prompting the user to replace the thermal insulation strip 13 or the window sash.

[0057] During use, as dynamic continuous compensation proceeds, the first swing block 131 and the second swing block 132 gradually open outwards. The easily broken wire 37 connected to the ends of the first swing block 131 and the second swing block 132 is gradually tightened, pulling the spring 381 to bend and deform, storing elastic energy. When the first swing block 131 and the second swing block 132 open to the preset maximum safe deflection angle, the tension applied by the bending of the spring 381 to the easily broken wire 37 reaches its fracture threshold, and the easily broken wire 37 breaks instantly. After the spring 381 loses its constraint, it immediately springs back to its original position, and the contact 382 at its free end contacts the contact 382 on the switch base 38, the circuit is connected, the warning light 39 lights up, and the user is reminded that the wear compensation of the thermal insulation strip 13 has reached its limit and the thermal insulation strip 13 or window sash needs to be replaced to avoid structural failure and safety risks caused by excessive wear.

[0058] This mechanical trigger warning structure requires no electronic sensors, is highly reliable, and has a low cost. It can promptly remind users to replace the thermal break strip 13 or the window sash, avoiding safety risks and sealing failures caused by excessive wear, and preventing further deterioration of energy-saving performance.

[0059] The remaining structure is the same as that in Example 2.

[0060] Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art, based on a study of the drawings, specification, and claims, should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to identify names rather than to indicate any particular order. No reference numerals in the claims should be construed as limiting the scope of protection. The functionality of multiple parts appearing in the claims can be implemented by a single hardware or software module. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A multi-cavity thermally broken aluminum window and door, characterized in that, include: A frame, in which glass is fixed, the frame includes an outer frame, an inner frame and a heat insulation strip connecting the two; The heat insulation strip has connecting feet at both ends that are interference-fitted with the mounting grooves on the outer frame and the inner frame, and the connecting feet include a first swing block and a second swing block that can be opened relative to each other; A connecting channel is provided inside the first and second swing blocks, and a wear layer of a predetermined thickness is left between the end of the connecting channel and the outer wall of the first and second swing blocks. A compensation component, disposed within the connecting foot, includes a trapezoidal block disposed between the first swing block and the second swing block. When the wear layer is worn through, the trapezoidal block is driven to move, causing the first swing block and the second swing block to open outward. The easily broken wire is connected to the first and second pendulum blocks at both ends. When the first and second pendulum blocks open outward to a preset limit value, it is pulled off and a warning signal is triggered.

2. The multi-cavity thermally broken aluminum window and door according to claim 1, characterized in that: The compensation component also includes a fixed cylinder, a piston slidably disposed within the fixed cylinder, and a foaming unit disposed within the fixed cylinder. The trapezoidal block is fixed to the end of the piston, and the foaming unit pushes the piston outward after foaming.

3. A multi-cavity thermally broken aluminum window and door according to claim 2, characterized in that: A sliding rod is slidably passed through the side wall of the fixed cylinder. The two ends of the sliding rod extend into the two communicating channels respectively, and elastic ropes in a taut state are connected between the two ends of the sliding rod and the inner wall of the end of the communicating channel respectively. A diaphragm is fixed to the outside of the sliding rod. The edge of the diaphragm is fixedly connected to the inner wall of the fixed cylinder and the piston respectively. The fixed cylinder is divided into a first cavity and a second cavity by the diaphragm.

4. A multi-cavity thermally broken aluminum window and door according to claim 3, characterized in that: The first cavity and the second cavity respectively contain two types of foaming units. When the wear layer on one side is worn through, the corresponding elastic rope end fails to be fixed, and the elastic rope on the other side pulls the slide bar to tear the diaphragm, so that the two raw materials are mixed and foamed.

5. A multi-cavity thermally broken aluminum window and door according to claim 4, characterized in that: The side of the piston away from the trapezoidal block forms a reaction chamber with the fixed cylinder. The volume of the reaction chamber is smaller than the volume of the foaming unit after natural foaming and expansion, so that the elastomer formed by foaming and solidification is in a compressed state and stores elastic potential energy, which is used to continuously push the piston outward to achieve dynamic wear compensation.

6. A multi-cavity thermally broken aluminum window and door according to claim 5, characterized in that: The foaming unit includes an isocyanate raw material section and a polyol raw material section. The isocyanate raw material section is polymeric MDI, and the polyol raw material section includes polyester polyol, water, and catalyst.

7. A multi-cavity thermally broken aluminum window and door according to claim 1, characterized in that: Triangular blocks are fixed to the inner sides of both the first and second pendulum blocks. The two triangular blocks abut against the two sides of the trapezoidal block, respectively, to transmit the driving force of the trapezoidal block to the first and second pendulum blocks.

8. A multi-cavity thermally broken aluminum window and door according to claim 1, characterized in that: Switch seats are provided on both the outer and inner frames at positions corresponding to the compensation component. A spring is fixed to one end of the switch seat. A contact is provided at the free end of the spring and at the corresponding position of the switch seat. The easily broken wire passes around the spring and is in a tensioned state. When the easily broken wire breaks, the spring resets and the two contacts come into contact to generate the warning signal.

9. A multi-cavity thermally broken aluminum window and door according to claim 8, characterized in that: It also includes a warning light, which is electrically connected to the contacts on the switch base, and is used to emit a light warning when the contacts are turned on.

10. A multi-cavity thermally broken aluminum window and door according to claim 8, characterized in that: The breakage threshold of the fragile wire corresponds to the tension applied by the spring sheet to the fragile wire when the first and second pendulum blocks reach the preset maximum safe deflection angle.

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