Novel waterproof airtight hinge

Abstract

The utility model discloses a novel waterproof airtight hinge which comprises a door frame body and a door plate, one side of the door plate is provided with a hinge assembly for hinging the door plate and the door frame body, and the other side of the door plate is provided with a door lock. The hinge assembly comprises a door leaf side hinge, a door frame side hinge and a pin shaft. One side of the door leaf side hinge and one side of the door frame side hinge are each provided with an integrally-formed bent ring. The hinge assembly is arranged to solve the problem that the door body is in a closed state, the door leaf side cover plate and the door frame side cover plate fixedly cover the hinges through the buckles, rainwater is prevented from making direct contact with the hinges and screws, fixing holes of the screws of the door body are in a closed state, the overall sealing performance is enhanced, and the hinges are still as new after being used for a long time. The O-shaped ethylene-propylene-diene monomer sealing rubber strips in the annular grooves have high elasticity and weather resistance, moisture permeation is further isolated, corrosion of the hinge and fixing screws is effectively prevented, and long-term stable operation of the hinge is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of building construction, specifically a novel waterproof and airtight sealing hinge. Background Technology

[0002] Fire doors in the building industry need to meet the requirement of ensuring their hinges can open and close normally even in humid installation environments. This means ensuring the hinges can maintain normal operation even after prolonged exposure to humid conditions, guaranteeing the normal opening and closing of the fire door. Such fire doors can maintain a tight seal even under prolonged rain or other severe weather conditions, greatly improving the safety performance of doors and windows and preserving their integrity.

[0003] Ordinary fire door hinges, when exposed to outdoor and humid environments, are prone to rust and corrosion, rendering the door unable to open. A search revealed a steel fire door and its manufacturing process disclosed in patent application publication number CN107905700B, belonging to the field of fire doors. The patent aims to provide a steel fire door and its manufacturing process, with the key technical points being: It includes a first door body and a second door body mounted on the same plane. The first and second door bodies are hinged to a wall on opposite sides along the vertical direction. The first door body has first sealing grooves at both its upper and lower ends, and a first sealing plate is slidably connected to the first door body within these grooves. A first driving component is provided inside the first door body to drive the first sealing plate to move vertically. Similarly, the second door body has second sealing grooves at both its upper and lower ends, and a second sealing plate is slidably connected to the second door body within these grooves. A second driving component is provided inside the second door body to drive the second sealing plate to move vertically.

[0004] This device improves the safety performance of doors and windows by reducing the gap between the door and the ground and ceiling. However, under prolonged rain or other severe weather conditions, the screws at the hinges of the steel fire door are prone to rust, which will affect the sealing performance and thus the fireproof effect of the fire door. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of waterproof and airtight hinge, which prevents the screws or hinges fixed at the fire door hinge from rusting by setting a protective structure, thereby avoiding the problem of water entering the door leaf due to water seepage from the fixing hole.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel waterproof and airtight hinge, comprising a door frame body and a door panel, wherein a hinge assembly for hinged connection between the door panel and the door frame body is provided on one side of the door panel, and a door lock is provided on the other side of the door panel;

[0007] The hinge assembly includes a door leaf side hinge, a door frame side hinge, and a pin. Both the door leaf side hinge and the door frame side hinge have an integrally formed bending ring on one side. A bearing is fixed inside the bending ring. The pin passes through the bending ring and is fixedly connected to the inner wall of the bearing inner ring. Waterproof components are provided on the outside of the door leaf side hinge and the door frame side hinge.

[0008] The waterproof component includes a protective plate, and the exterior of the protective plate is provided with a fixing structure for fixing the protective plate to the door leaf side hinge and the door frame side hinge. The bottom of the protective plate is provided with a sealing structure.

[0009] Preferably, the protective panel includes a door leaf side cover and a door frame side cover, both of which are rectangular in shape, and both ends of the door leaf side cover and the door frame side cover are provided with integrally formed extension edges.

[0010] Preferably, the fixing structure includes a buckle and a slot. Both ends of the door leaf side cover and the door frame side cover are provided with grooves. The buckle is fixed in the groove, and the slot is provided on one side of the edge. The buckle is inserted into the slot.

[0011] Preferably, the sealing structure includes a door leaf side sealing strip and a door frame side sealing strip, and the upper surfaces of the door leaf side hinge and the door frame side hinge are provided with annular grooves, and the door leaf side sealing strip and the door frame side sealing strip are bonded in the annular grooves.

[0012] Preferably, the sealing strip is O-shaped and is configured as an EPDM sealing strip.

[0013] Preferably, both the door frame body and the door panel surface are coated with a corrosion-resistant coating structure, which includes an epoxy zinc-rich primer layer, an epoxy micaceous iron oxide intermediate paint layer, and a fluorocarbon topcoat layer.

[0014] Preferably, the hinge assembly is provided in three groups, and the three groups of hinge assemblies are arranged linearly in the Z-axis direction.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention eliminates the problem of airtightness in doors by incorporating a hinge assembly. The door leaf side cover and door frame side cover are secured to the hinge with snap-fit ​​mechanisms, forming a physical barrier that prevents rainwater from directly contacting the hinge and screws. This keeps the screw holes sealed, enhancing overall sealing performance and ensuring the hinge remains like new even after long-term use. The O-ring EPDM sealing strip within the annular groove has high elasticity and weather resistance, further preventing moisture penetration and effectively preventing corrosion of the hinge and screws, ensuring long-term stable operation of the hinge. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the position of the hinge component of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the hinge assembly of this utility model.

[0019] In the diagram: 1. Door frame body; 2. Door panel; 3. Hinge assembly; 4. Door lock; 5. Door leaf side hinge; 6. Door frame side hinge; 8. Pin; 9. Bending ring; 10. Bearing; 11. Waterproof component; 1101. Protective plate; 12. Sealing structure; 13. Fixing structure; 1101a. Door leaf side cover plate; 1101b. Door frame side cover plate; 1101c. Edge; 1301. Buckle; 1302. Slot; 1303. Groove; 1201. Door leaf side sealing strip; 1202. Door frame side sealing strip; 1203. Annular groove. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-2 This utility model provides a technical solution: a novel waterproof and airtight hinge, including a door frame body 1 and a door panel 2, wherein a hinge assembly 3 is provided on one side of the door panel 2 for hinged connection between the door panel 2 and the door frame body 1, and a door lock 4 is provided on the other side of the door panel 2;

[0022] The hinge assembly 3 includes a door leaf side hinge 5, a door frame side hinge 6, and a pin 8. Both the door leaf side hinge 5 and the door frame side hinge 6 have an integrally formed bending ring 9 on one side. A bearing 10 is fixed inside the bending ring 9. The pin 8 passes through the bending ring 9 and is fixedly connected to the inner wall of the inner ring of the bearing 10. A waterproof component 11 is provided on the outside of the door leaf side hinge 5 and the door frame side hinge 6.

[0023] The waterproof component 11 includes a protective plate 1101. The protective plate 1101 is provided with a fixing structure 13 on its exterior for fixing the protective plate 1101 to the door leaf side hinge 5 and the door frame side hinge 6. The bottom of the protective plate 1101 is provided with a sealing structure 12.

[0024] By setting three hinge components 3 on one side of the door panel 2, the stability of the door is improved. The modular design facilitates installation and maintenance and enhances structural reliability.

[0025] The protective plate 1101 includes a door leaf side cover plate 1101a and a door frame side cover plate 1101b. Both the door leaf side cover plate 1101a and the door frame side cover plate 1101b are rectangular. Both ends of the door leaf side cover plate 1101a and the door frame side cover plate 1101b are provided with integrally formed extension edges 1101c.

[0026] By incorporating a one-piece molding bending mechanism to avoid welding weaknesses, the structural strength and durability are enhanced; the built-in bearing 10 reduces frictional resistance, ensuring smooth and quiet opening and closing of the door; the external waterproof component 11 provides double protection, balancing mechanical performance and waterproofing requirements.

[0027] The fixing structure 13 includes a buckle 1301 and a slot 1302. Both ends of the door leaf side cover plate 1101a and the door frame side cover plate 1101b are provided with grooves 1303. The buckle 1301 is fixed in the groove 1303. The slot 1302 is opened on one side of the edge 1101c. The buckle 1301 is inserted into the slot 1302.

[0028] The door leaf side cover 1101a and the door frame side cover 1101b are set as separate rectangular covers to increase the wrapping effect and block water flow penetration; the edge 1101c is designed to expand the coverage area, strengthen the edge sealing, and prevent lateral splash water intrusion.

[0029] The sealing structure 12 includes a door leaf side sealing strip 1201 and a door frame side sealing strip 1202. The upper surfaces of the door leaf side hinge 5 and the door frame side hinge 6 are provided with annular grooves 1203. The door leaf side sealing strip 1201 and the door frame side sealing strip 1202 are glued in the annular grooves 1203.

[0030] The annular groove 1203 positions the door leaf side sealing strip 1201 and the door frame side sealing strip 1202 to prevent sealing failure caused by displacement.

[0031] The sealing strip is O-shaped and is a EPDM sealing strip.

[0032] EPDM material is resistant to high and low temperatures (-50℃~150℃), ozone aging, and has a long service life.

[0033] Both the door frame body 1 and the door panel 2 are coated with a corrosion-resistant coating structure, which includes an epoxy zinc-rich primer layer, an epoxy micaceous iron oxide intermediate paint layer, and a fluorocarbon topcoat layer.

[0034] The three-layer composite coating forms a gradient protection: the zinc-rich primer provides cathodic protection and rust prevention, the micaceous iron oxide intermediate paint blocks water vapor penetration, and the fluorocarbon topcoat is weather-resistant and UV-resistant.

[0035] The hinge assembly 3 is provided in three sets, and the three sets of hinge assembly 3 are arranged linearly in the Z-axis direction.

[0036] Compared to traditional simple hinges, this hinge structure protects the fixing holes and internal screws, reduces the contact area between the hinge and rainwater, and the O-shaped cross-section rubber strip provides uniform contact pressure, adapts to minor deformations, and can adapt to the opening and closing frequency of doors of different weights, ensuring smooth door opening and reducing the probability of door sagging or jamming, thereby increasing the service life of the door.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new type of waterproof and airtight door closer hinge, characterized in that: It includes door frame body (1) and door panel (2), one side of door panel (2) is provided with hinge assembly (3) for hinging door panel (2) and door frame body (1), the other side of door panel (2) is provided with door lock (4); The hinge assembly (3) includes door leaf side hinge (5), door frame side hinge (6) and pin shaft (8), the one side of door leaf side hinge (5) and door frame side hinge (6) is provided with integrally formed bending ring (9), the bearing (10) is fixed in the bending ring (9), the pin shaft (8) penetrates the bending ring (9) and is fixedly connected with the inner wall of the inner ring of bearing (10), the outside of door leaf side hinge (5) and door frame side hinge (6) is provided with waterproof assembly (11); The waterproof assembly (11) includes protective plate (1101), the outside of protective plate (1101) is provided with fixed structure for fixing protective plate (1101) with door leaf side hinge (5) and door frame side hinge (6), the bottom of protective plate (1101) is provided with sealing structure.

2. A new type of waterproof and airtight closure hinge according to claim 1, characterized in that: The protective plate (1101) includes door leaf side cover plate (1101a) and door frame side cover plate (1101b), the door leaf side cover plate (1101a) and door frame side cover plate (1101b) are both arranged in rectangular, both ends of door leaf side cover plate (1101a) and door frame side cover plate (1101b) are provided with integrally formed extension edge (1101c).

3. A new type of waterproof and airtight closure hinge according to claim 2, characterized in that: The fixed structure includes buckle (1301) and clamping groove (1302), both ends of door leaf side cover plate (1101a) and door frame side cover plate (1101b) are provided with recess (1303), the buckle (1301) is fixed in the recess (1303), the clamping groove (1302) is arranged on one side of extension edge (1101c), the buckle (1301) is clamped into the clamping groove (1302).

4. A new type of waterproof and airtight closure hinge according to claim 3, characterized in that: The sealing structure includes door leaf side sealing rubber strip (1201) and door frame side sealing rubber strip (1202), the upper surface of door leaf side hinge (5) and door frame side hinge (6) is provided with annular groove (1203), the door leaf side sealing rubber strip (1201) and door frame side sealing rubber strip (1202) are glued in annular groove (1203).

5. A new type of waterproof and airtight closure hinge according to claim 4, characterized in that: The sealing rubber strip is arranged in O shape, the sealing rubber strip is arranged as three element ethylene propylene sealing rubber strip.

6. A new type of waterproof and airtight closure hinge according to claim 1, characterized in that: The surface of door frame body (1) and door panel (2) is coated with corrosion-resistant coating structure, the coating structure includes epoxy zinc-rich primer layer, epoxy cloud iron intermediate paint layer and fluorocarbon topcoat layer.

7. A new type of waterproof and airtight closure hinge according to claim 1, characterized in that: The hinge assembly (3) is provided with three groups, three groups of hinge assembly (3) are arranged in linear arrangement in Z axis direction.

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