Multi-cavity broken bridge thermal insulation aluminum alloy casement door
By employing a multi-chamber thermally broken door body and a multi-seal structure with the door frame, along with a spring-driven automatic locking mechanism, the problems of poor sealing, rainwater leakage, high noise, and insufficient anti-theft performance of multi-chamber thermally broken aluminum alloy swing doors are solved, achieving efficient sealing, low noise, and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN DAXING ALUMINUM IND CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-29
AI Technical Summary
Existing multi-cavity thermally broken aluminum alloy swing doors suffer from poor sealing, high risk of rainwater leakage, high noise, few locking points that are easily pried open, and inconvenient automatic locking.
The door adopts a multi-cavity thermal break insulation door body and a multi-seal structure with the door frame, combined with a spring-driven lock rod automatic locking mechanism to form a double anti-theft structure, and achieves automatic closing through the stable connection of the hinges and support components.
It improves the door's sealing and anti-theft performance, reduces noise, and ensures smooth opening and closing and convenient operation.
Smart Images

Figure CN224300685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum alloy swing door technology, and more specifically, to a multi-cavity thermally broken aluminum alloy swing door. Background Technology
[0002] Multi-cavity thermally broken aluminum alloy casement doors are high-performance door and window products developed from traditional aluminum alloy doors and windows. Their core technology lies in combining a "multi-cavity structure" with "thermal break technology" to solve the problem of poor thermal insulation performance in traditional aluminum alloy doors and windows. Aluminum alloy itself has a high thermal conductivity (approximately 200 W / m·K). Without thermal insulation, heat is easily conducted through the profiles of traditional aluminum alloy casement doors, leading to energy loss and failing to meet modern building energy efficiency standards (such as the current Chinese building energy efficiency design standard requiring a heat transfer coefficient K-value ≤ 2.5 W / m²·K for doors and windows).
[0003] To address this issue, an early single-cavity thermal break structure emerged, which involves inserting a thermal break strip (usually PA66 nylon strip) into the aluminum alloy profile, dividing the profile into inner and outer parts to form a simple thermal insulation layer. However, this structure has significant drawbacks: the single-cavity air layer thickness is insufficient (usually ≤10 mm), resulting in limited thermal insulation performance, with a heat transfer coefficient K value of approximately 3.0~3.5 W / m²・K; furthermore, the locking structure often uses a single-point lock, relying solely on a single adhesive strip for sealing, leading to a large air permeability (≥1.5 m³ / (m・h)) and a high risk of rainwater leakage.
[0004] With increasing demands for building energy efficiency (such as passive buildings requiring a K-value ≤ 1.0 W / m²·K), multi-cavity thermal break structures have emerged. This structure utilizes 2-3 independent cavities (15-25 mm wide) within the profile to form a highly efficient insulation layer, taking advantage of air's low thermal conductivity (0.026 W / m·K). Combined with double or triple thermal break strips, this reduces the heat transfer coefficient K-value to below 2.0 W / m²·K. However, existing multi-cavity thermal break aluminum alloy swing doors still face the following technical bottlenecks:
[0005] The fit between the traditional door and the door frame is greatly affected by the installation precision, resulting in poor sealing performance, prominent rainwater leakage problems, and a lot of noise when closing.
[0006] Secondly, most products use single-point locks or simple bolt structures, with few locking points and exposed locks that are easily damaged by lock picking tools. They cannot meet the anti-theft requirements of high-security scenarios (such as commercial buildings and villas), and are not convenient for automatic locking after the door is combined with the door frame, reducing the ease of use.
[0007] Therefore, a multi-cavity thermally broken aluminum alloy casement door is proposed. Utility Model Content
[0008] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-cavity thermally broken aluminum alloy swing door to solve the problems mentioned in the background art.
[0009] To achieve the above objectives, this utility model provides the following technical solution: a multi-cavity thermally broken aluminum alloy swing door, including a door frame, a multi-cavity thermally broken insulated door body disposed within the door frame, a hinge connecting the multi-cavity thermally broken insulated door body to the door frame, a box frame installed on the multi-cavity thermally broken insulated door body, two locking components connected to the box frame, the two locking components being connected to a support component, a sealing cover installed on the box frame, and a locking block cooperating with the two locking components provided on the door frame.
[0010] Preferably, a baffle is provided inside the door frame, and a rubber pad is provided on the corresponding multi-cavity thermally broken door body.
[0011] Preferably, the door frame is provided with a second mounting groove, and the corresponding multi-cavity thermal break door body is provided with a first mounting groove. One end of the hinge is installed in the first mounting groove, and the other end of the hinge is installed in the second mounting groove.
[0012] Preferably, the locking assembly includes a sliding plate, a locking bar, and a button. The locking bar is provided at one end of the sliding plate, and a button that is slidably connected to the baffle is provided on one side of the sliding plate.
[0013] Preferably, the support assembly includes a support, a support rod, a spring, and a locking nut. Two supports are provided, and the support rod is fixed to the support by two locking nuts. The support rod is inserted into a through hole on the slide plate, and the spring is sleeved on the support rod. Both ends of the spring are connected to the corresponding slide plate.
[0014] Preferably, the locking block has symmetrical guide grooves, and each guide groove has a locking groove at its bottom.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] 1. The retaining frame inside the door frame works in conjunction with the rubber pad on the door. When closed, the rubber pad presses against the retaining frame, forming a multi-layered sealing structure that effectively blocks rainwater, dust, and noise. The retaining frame is also staggered from the gap between the door frame and the door to prevent external tools from reaching in and adjusting the locking components. The guide groove on the lock block works in conjunction with the lock groove, combined with the spring-driven lock rod automatic locking mechanism, forming a double anti-theft structure and improving anti-pry performance.
[0017] 2. The hinges are installed in the mounting slots of the door frame and door body, ensuring a stable connection and smooth opening and closing of the door. The spring and support rod structure in the support assembly realizes the automatic reset and locking of the locking rod. No additional operation is required when closing the door, and the locking rod can automatically slide into the lock groove along the guide groove, improving the convenience of operation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the multi-cavity thermal break door structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the door frame structure of this utility model.
[0021] Figure 4 This is a schematic diagram of the internal structure of the box frame of this utility model.
[0022] Figure 5 This is a schematic diagram of the structure of the locking block of this utility model.
[0023] The attached diagram is labeled as follows: 1. Door frame; 2. Multi-cavity thermally broken door body; 3. Hinge; 4. Sealing cover; 5. Button; 6. Lock block; 7. Rubber pad; 8. First mounting groove; 9. Baffle frame; 10. Second mounting groove; 11. Box frame; 12. Slide plate; 13. Locking rod; 14. Support; 15. Support rod; 16. Spring; 17. Locking nut; 18. Guide groove; 19. Lock groove. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] As attached Figure 1-5 The multi-cavity thermally broken aluminum alloy swing door shown includes a door frame 1, a multi-cavity thermally broken door body 2 is provided inside the door frame 1, a hinge 3 connects the multi-cavity thermally broken door body 2 to the door frame 1, a box frame 11 is installed on the multi-cavity thermally broken door body 2, two locking components are connected to the box frame 11, the two locking components are connected to a support component, a sealing cover 4 is installed on the box frame 11, and a locking block 6 is provided on the door frame 1 to cooperate with the two locking components.
[0026] In practice, the multi-cavity thermally broken door body 2 is made of aluminum alloy, and the door frame 1 and the multi-cavity thermally broken door body 2 are connected by hinges 3. When in use, during the closing process of the multi-cavity thermally broken door body 2, the ends of the two locking components are guided by the guide groove 18 opened in the locking block 6, and the two locking components are centered and close together, so that the spring 16 is compressed. After the ends of the locking components enter the lock groove 19, the spring 16 extends, so that the locking components are locked and engaged with the lock groove 19, thereby closing the multi-cavity thermally broken door body 2. Closing is convenient. When opening the multi-cavity thermally broken door body 2, it is only necessary to press the locking components at the same time, so that the locking components are close to the guide groove 18 and then pull the multi-cavity thermally broken door body 2 to open it.
[0027] A baffle 9 is provided inside the door frame 1, and a rubber pad 7 is provided on the corresponding multi-cavity thermally broken door body 2.
[0028] In practical implementation, when the multi-cavity thermally broken door body 2 is closed, the rubber pad 7 is pressed against the baffle frame 9. This not only improves the sealing performance and heat insulation effect after closing, but also reduces the noise generated after the multi-cavity thermally broken door body 2 is closed due to the cushioning performance of the rubber pad 7. In addition, the baffle frame 9 is designed to avoid the gap between the door frame 1 and the multi-cavity thermally broken door body 2, preventing external adjustment of the locking component position, thus achieving an anti-theft effect and improving security.
[0029] The door frame 1 is provided with a second mounting groove 10, and the corresponding multi-cavity thermal break door body 2 is provided with a first mounting groove 8. One end of the hinge 3 is installed in the first mounting groove 8, and the other end of the hinge 3 is installed in the second mounting groove 10.
[0030] The locking assembly includes a slide plate 12, a locking rod 13, and a button 5. The slide plate 12 has a locking rod 13 at one end, and a button 5 that is slidably connected to the baffle frame 9 on one side of the slide plate 12.
[0031] The support assembly includes a support 14, a support rod 15, a spring 16, and a locking nut 17. There are two supports 14. The support rod 15 is fixed to the support 14 by two locking nuts 17. The support rod 15 is inserted into the through hole on the slide plate 12. The spring 16 is sleeved on the support rod 15, and both ends of the spring 16 are connected to the corresponding slide plate 12.
[0032] The locking block 6 is symmetrically provided with guide grooves 18, and each guide groove 18 has a locking groove 19 at its bottom.
[0033] In practice, during the process of closing the multi-cavity thermal break door body 2, each locking rod 13 enters the guide groove 18. Under the guidance of the guide groove 18, the two sliding plates 12 move closer along the support rod 15 and squeeze the spring 16. When the locking rod 13 enters the locking groove 19, the pressure on the inner wall of the guide groove 18 on the locking rod 13 disappears, causing the spring 16 to rebound and restore its length, thereby causing the sliding plate 12 to move and reset. The locking rod 13 is locked in the locking groove 19, completing the automatic closing of the multi-cavity thermal break door body 2.
[0034] When opening the multi-cavity thermal break door 2, press both buttons 5 simultaneously to bring the two slide plates 12 closer together, thereby moving the support rod 15 to the junction of the locking groove 19 and the guide groove 18. Then pull the multi-cavity thermal break door 2 outward to make the locking rod 13 slide out along the guide groove 18, thus opening the multi-cavity thermal break door 2.
[0035] It should be noted that the accompanying drawings in this application are for illustrative purposes only and are not the actual scale used in manufacturing. Furthermore, the maximum distance between the two buttons 5 is less than 10 cm, in order to facilitate ergonomic design during actual operation.
[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-cavity thermally broken aluminum alloy swing door, including a door frame (1), characterized in that: The door frame (1) is provided with a multi-cavity thermally broken door body (2), and a hinge (3) is connected between the multi-cavity thermally broken door body (2) and the door frame (1). A box frame (11) is installed on the multi-cavity thermally broken door body (2), and the box frame (11) is connected to two locking components. The two locking components are connected to a support component. A sealing cover (4) is installed on the box frame (11), and a locking block (6) that cooperates with the two locking components is provided on the door frame (1).
2. The multi-cavity thermally broken aluminum alloy swing door according to claim 1, characterized in that: A baffle (9) is provided inside the door frame (1), and a rubber pad (7) is provided on the corresponding multi-cavity thermally broken door body (2).
3. The multi-cavity thermally broken aluminum alloy swing door according to claim 2, characterized in that: The door frame (1) is provided with a second mounting groove (10), and the corresponding multi-cavity thermal break door body (2) is provided with a first mounting groove (8). One end of the hinge (3) is installed in the first mounting groove (8), and the other end of the hinge (3) is installed in the second mounting groove (10).
4. The multi-cavity thermally broken aluminum alloy swing door according to claim 3, characterized in that: The locking assembly includes a sliding plate (12), a locking rod (13) and a button (5). The sliding plate (12) has a locking rod (13) at one end and a button (5) that is slidably connected to the baffle (9) on one side.
5. The multi-cavity thermally broken aluminum alloy swing door according to claim 4, characterized in that: The support assembly includes a support (14), a support rod (15), a spring (16), and a locking nut (17). There are two supports (14). The support rod (15) is fixed on the support (14) by two locking nuts (17). The support rod (15) is inserted into the through hole on the slide plate (12). The spring (16) is sleeved on the support rod (15), and the two ends of the spring (16) are connected to the corresponding slide plate (12).
6. The multi-cavity thermally broken aluminum alloy swing door according to claim 5, characterized in that: The locking block (6) is symmetrically provided with guide grooves (18), and each guide groove (18) has a locking groove (19) at its bottom.