High air-tightness commercial door

Abstract

The utility model discloses a high air tightness commercial door, and the lower khan structure of northern hinge type commercial door is weak in anti-crash property due to the planing and bending of the outer decorative plate, and long -term force transmission of the door closer and sealing strip leads to plate crack, glue crack, door deformation, poor sealing, and the self -adhesive strip is easy to weather, loses elasticity, falls off, leaks air, and is replaced frequently with high cost. The utility model discloses a composite door frame and two opposite composite door leaves, the composite door frame is connected with the composite door leaf through the invisible hinge, and the composite door frame and the composite door leaf are embedded with the multipoint sealing element for the sealing between the composite door frame and the composite door leaf. The two opposite composite door leaves form the ladder mouth middle joint, and the ladder mouth middle joint is embedded with the deformation sealing element for the sealing between the two opposite composite door leaves, and the H type aluminum alloy section is fixed on the door frame main framework, and the two opposite L type aluminum alloy sections are also fixed on the door leaf main framework in the middle joint of the two opposite composite door leaves. The utility model is used for the northern commercial door.

Description

Technical Field

[0001] This utility model relates to a high airtightness commercial door. Background Technology

[0002] Hinged commercial doors used in northern regions often feature a sill. Their structure primarily uses galvanized square tubing as the frame, with thin sheets of 0.8mm to 1.2mm bent into an outer decorative panel through a grooving process. While this process reduces the bending radius to improve aesthetics, it significantly weakens the panel's impact resistance. The outer decorative panel is then bonded to the galvanized square tubing using neutral structural adhesive to form a trapezoidal opening, with a self-adhesive sealing strip directly attached to the panel surface. When the door closes, the door closer's pull causes the door to close automatically. At this point, the door sill first impacts the sealing strip, and the impact force is transmitted to the outer decorative panel. Over time, this repeated force can cause cracks in the grooved area of ​​the decorative panel, and even breakage of the neutral structural adhesive, leading to overall door deformation. This not only severely compromises the seal but also causes abnormal noises when opening and closing the door.

[0003] Furthermore, self-adhesive sealing strips are prone to surface weathering, loss of elasticity due to compression, and detachment after use, leading to air leakage and seal failure in the door. Frequent replacements significantly increase maintenance costs. Therefore, the market urgently needs a commercial door that combines aesthetic appeal, high airtightness, and practicality. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a high airtightness commercial door.

[0005] The above objectives are achieved through the following scheme: A high airtight commercial door comprises: a composite door frame and two opposing composite door panels, wherein the composite door frame and the composite door panels are connected by concealed hinges, and a multi-point sealing element for sealing between the composite door frame and the composite door panels is embedded therebetween.

[0006] A trapezoidal gap is formed between the two split composite door panels, and a deformable sealing element for sealing between the two split composite door panels is embedded in the trapezoidal gap.

[0007] The composite door frame includes a main frame skeleton, on which H-shaped aluminum alloy profiles are fixed.

[0008] The composite door leaf includes two main door leaf frames, and two L-shaped aluminum alloy profiles with their ends facing each other are fixed on the main door leaf frames located at the middle seam of the two double-leaf composite door leaves.

[0009] The main frame of the door frame is welded from galvanized square steel pipes and filled with polyurethane foam. The main frame of the door frame is wrapped with an A-type sealing plate.

[0010] The main frame of the door leaf is welded from galvanized square steel pipes and filled with polyurethane foam. Each main frame of the door leaf is wrapped with a B-type sealing plate.

[0011] Each of the aforementioned H-shaped aluminum alloy profiles has a first groove on its upper part.

[0012] Each of the aforementioned L-shaped aluminum alloy profiles has a second groove on its upper part.

[0013] The multi-point sealing component includes an R-type bracket, with an S-type rubber strip fixed to the lower part of the R-type bracket and a toothed protrusion fixed to the right side, the toothed protrusion being embedded into the first groove of the H-type aluminum alloy profile.

[0014] The deformable seal includes an A-shaped bracket, with an inverted U-shaped rubber strip fixed to the upper part of the A-shaped bracket, which is then embedded into the second groove of the L-shaped aluminum alloy profile. Beneficial effects

[0015] 1. H-shaped and L-shaped aluminum alloy profiles installed on the main frame of the door frame and door leaf joint bear the squeezing and impact force when the door is repeatedly closed, so that the bent A-side plate and B-side plate are not stressed, thus avoiding the occurrence of cracking or cracking of neutral structural adhesive under external force, and ensuring that the door frame structure is more solid.

[0016] 2. Multi-point and deformable seals made of EPDM material not only have a long service life and stable overall performance, but are also less prone to falling off, and are easier to install and replace. The multi-point seals on the door frame can form a 90° seal when compressed, creating two contact points with the door leaf for a superior sealing effect.

[0017] 3. Aluminum handles can be customized with colors, engraved patterns, or customer names according to customer needs, which can better reflect the high-end feel of customized commercial doors. Attached Figure Description

[0018] Figure 1 Front view of a high-airtightness commercial door; Figure 2 Cross-sectional view of a high-airtightness commercial door; Figure 3 Longitudinal section diagram of a high-airtightness commercial door; Figure 4 Enlarged cross-sectional view of the junction between the door frame and the door leaf; Figure 5 Enlarged cross-section view of the center seam of the door leaf; Figure 6 Cross-sectional view of the detached seal on the aluminum alloy profile of the door frame; Figure 7 Cross-sectional view of the detached seal on the aluminum alloy profile of the door leaf; In the diagram: 1. Composite door frame; 2. Composite door leaf; 3. Invisible hinge; 4. Door closer; 5. H-shaped aluminum alloy profile; 6. Multi-point seal; 7. Insulating tempered glass; 8. Aluminum handle; 9. L-shaped aluminum alloy profile; 10. Deformable seal; 11. A-type sealing plate; 12. Polyurethane foam; 13. Main frame of door frame; 14. Main frame of door leaf; 15. B-type sealing plate; 16. Glass strip; 17. First groove; 18. Second groove; 19. S-shaped sealing strip; 20. R-type bracket; 21. Toothed protrusion; 22. I-shaped bracket; 23. U-shaped sealing strip. Detailed Implementation

[0019] Reference Figures 1-7 A high airtight commercial door comprises: a composite door frame 1 and two opposing composite door panels 2, wherein the composite door frame and the composite door panels are connected by an invisible hinge 3, and a multi-point sealing element 6 for sealing between the composite door frame and the composite door panels is embedded therebetween.

[0020] A trapezoidal gap is formed between the two split composite door panels, and a deformable sealing element 10 for sealing between the two split composite door panels is embedded in the trapezoidal gap.

[0021] The composite door frame includes a main frame 13, on which an H-shaped aluminum alloy profile 5 is fixed.

[0022] The composite door leaf includes two main door leaf frames 14, and hollow tempered glass 7 is fixed between the two main door leaf frames by glass strips 16. Two L-shaped aluminum alloy profiles 9 are also fixed on the main door leaf frames located at the middle seam of the two double-leaf composite door leaves.

[0023] The main frame of the door frame is welded from galvanized square steel pipes and filled with polyurethane foam 12. The main frame of the door frame is wrapped with an A-type sealing plate 11.

[0024] The main frame of the door leaf is welded from galvanized square steel pipes and filled with polyurethane foam. Each main frame of the door leaf is wrapped with a B-sealing plate 15.

[0025] The A-side plate and B-side plate can be made of copper-plated stainless steel plate, pure copper plate, or fluorocarbon-coated zinc plate formed by bending.

[0026] Each of the H-shaped aluminum alloy profiles has a first groove 17 on its upper part.

[0027] Each of the L-shaped aluminum alloy profiles has a second groove 18 on its upper part.

[0028] The multi-point sealing component includes an R-type bracket 20, with an S-type rubber strip 19 fixed to the lower part of the R-type bracket and a toothed protrusion 21 fixed to the right side, the toothed protrusion being embedded into the first groove of the H-type aluminum alloy profile.

[0029] The deformable seal includes an A-shaped bracket 22, with an inverted U-shaped rubber strip 23 fixed to the upper part of the A-shaped bracket, which is then embedded into the second groove of the L-shaped aluminum alloy profile.

[0030] A door closer 4 is fixed to the upper inner side of the composite door frame to drive the composite door leaf to close automatically.

[0031] The composite door is secured with aluminum handles 8 on both sides using nuts and bolts. The aluminum handles are made of thick aluminum plates with horseshoe bases and can be engraved with different patterns and names according to customer requirements.

[0032] This utility model is applicable not only to commercial service doors in northern regions, but also to unit doors in residential communities.

[0033] Working principle

[0034] The main frame of the door and the main frame of the door leaf are welded with galvanized square steel pipes and filled with polyurethane foam to ensure the overall structural strength and insulation foundation. When the composite door frame and composite door leaf are repeatedly closed and connected by invisible hinges, the multi-point sealing parts in the H-shaped aluminum alloy profile and the deformation sealing parts in the L-shaped aluminum alloy profile are in a tight fit, forming a double seal to block air circulation. At the same time, the H-shaped and L-shaped aluminum alloy profiles bear the squeezing and impact force when the door is repeatedly closed, so that the bent A and B sealing plates are not stressed, thus avoiding the occurrence of cracking or cracking of neutral structural adhesive under external force, ensuring that the door frame structure is more solid. The door closer ensures that the composite door leaf is closed in place. Multiple designs work together to achieve a high airtightness effect.

Claims

1. A high airtight commercial door, comprising: A composite door frame and two opposing composite door panels, characterized in that: the composite door frame and the composite door panels are connected by an invisible hinge, and a multi-point sealing element for sealing between the composite door frame and the composite door panels is embedded between them. A trapezoidal gap is formed between the two split composite door panels, and a deformable sealing element for sealing between the two split composite door panels is embedded in the trapezoidal gap. The composite door frame includes a main frame skeleton, on which H-shaped aluminum alloy profiles are fixed. The composite door leaf includes two main door leaf frames, and two L-shaped aluminum alloy profiles with their ends facing each other are fixed on the main door leaf frames located at the middle seam of the two double-leaf composite door leaves.

2. The high airtightness commercial door according to claim 1, characterized in that: The main frame of the door frame is welded from galvanized square steel pipes and filled with polyurethane foam. The main frame of the door frame is wrapped with an A-type sealing plate.

3. The high airtightness commercial door according to claim 1, characterized in that: The main frame of the door leaf is welded from galvanized square steel pipes and filled with polyurethane foam. Each main frame of the door leaf is wrapped with a B-type sealing plate.

4. The high airtightness commercial door according to claim 1, characterized in that: Each of the aforementioned H-shaped aluminum alloy profiles has a first groove on its upper part.

5. The high airtightness commercial door according to claim 1, characterized in that: Each of the aforementioned L-shaped aluminum alloy profiles has a second groove on its upper part.

6. The high airtightness commercial door according to claim 1, characterized in that: The multi-point sealing component includes an R-type bracket, with an S-type rubber strip fixed to the lower part of the R-type bracket and a toothed protrusion fixed to the right side, the toothed protrusion being embedded into the first groove of the H-type aluminum alloy profile.

7. The high airtightness commercial door according to claim 1, characterized in that: The deformable seal includes an A-shaped bracket, with an inverted U-shaped rubber strip fixed to the upper part of the A-shaped bracket, which is then embedded into the second groove of the L-shaped aluminum alloy profile.

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