Flange for heating and ventilating duct with self-locking function

Abstract

The utility model belongs to the technical field of ventilation pipe flange, especially a kind of heating ventilation pipe flange with self-locking function, including first warm air pipe and second warm air pipe, and the flange of the one end of first warm air pipe and the flange between opposite second warm air pipe are provided with self-locking mechanism.The self-locking assembly is arranged in the application, the force of always rotating outward is applied to the clamping block by torsional spring, the clamping block is conveniently pushed into the inner wall of the one end flange of first warm air pipe, and it is clamped, self-locking is completed, first warm air pipe and second warm air pipe are difficult to separate, unlocking assembly is arranged, the top of limiting shell is abutted with the long side and the short side bottom of rotating seat, positioning rod is conveniently withdrawn and extended limiting shell, it is convenient to control connecting rod, to adjust the position of clamping plate, realize the loosening of the flange between first warm air pipe and second warm air pipe, and the multiple adjusting rods of one side can be controlled simultaneously by push rod.

Description

Technical Field

[0001] This application relates to the field of ventilation duct flange technology, and in particular to a heating and ventilation duct flange with a self-locking function. Background Technology

[0002] A ventilation duct flange is a component used to connect ventilation ducts. It is typically made of metal and uses bolts, nuts, or other fastening methods to securely connect different ventilation duct components, ensuring the sealing and stability of the ventilation system. Through precise connections and strong fixing forces, ventilation duct flanges ensure the stability of the entire ventilation system, preventing loosening or leakage due to vibration or other factors. They play a crucial role in ventilation systems, not only ensuring normal operation but also improving maintenance convenience and system stability to a certain extent.

[0003] Regarding the aforementioned technologies, the inventors believe that in practical use, existing ventilation ducts typically rely on multiple bolts or nuts to secure the flanges between ducts. This traditional connection method is often time-consuming and labor-intensive, requiring a significant amount of time and effort to tighten each bolt individually to ensure a secure connection. Furthermore, existing flange connections lack a self-locking structure, meaning that during long-term operation, the ventilation duct system may be affected by factors such as vibration and pressure fluctuations, causing the connections to gradually loosen, posing significant safety hazards and maintenance difficulties. Utility Model Content

[0004] To address the technical problems of inconvenient disassembly and assembly and unstable installation of existing HVAC duct flanges, this application provides a HVAC duct flange with a self-locking function.

[0005] This application provides a heating and ventilation duct flange with a self-locking function, using the following technical solution:

[0006] A heating duct flange with a self-locking function includes a first heating duct and a second heating duct. A self-locking mechanism is provided between a flange at one end of the first heating duct and a flange opposite to the second heating duct. The self-locking mechanism consists of a self-locking component and an unlocking component. The self-locking component realizes the self-locking action between the flange of the first heating duct and the flange of the second heating duct.

[0007] The unlocking component enables the rapid release of the lock when the self-locking component is disassembled after being locked.

[0008] Optionally, the self-locking assembly includes a limiting groove, which is opened outside the flange at one end of the second heating pipe. A rotating shaft is fixedly connected between the inner walls of the limiting groove, and a clamping block is rotatably connected to the outside of the rotating shaft.

[0009] Optionally, a torsion spring is sleeved on the outside of the rotating shaft, and the inner side of the clamping block and one side of the limiting groove are respectively fixedly connected to the two ends of the torsion spring. A connecting rod is fixedly connected to one side of one of the clamping blocks on the corresponding side.

[0010] Optionally, the unlocking component includes a limiting shell, which is fixedly connected to the outside of the flange at one end of the first heating pipe, and an adjusting rod is slidably connected between the inner walls of the limiting shell.

[0011] Optionally, a positioning rod is fixedly connected to the bottom of the adjusting rod, and a spring is elastically connected between the top of the positioning rod and the inner top of the limiting shell.

[0012] Optionally, the bottom of the positioning rod passes through the top of the flange at one end of the first heating pipe and contacts the top of the connecting rod on the corresponding side.

[0013] Optionally, a rotating rod is fixedly connected to the top of the adjusting rod, and rotating seats are rotatably connected to both sides of the rotating rod. A push rod is fixedly connected to the top of the rotating seat on the corresponding side.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. By setting a self-locking component, the torsion spring always applies an outward rotational force to the clamping block, which makes it easy for the clamping block to be pushed into the inner wall of the flange at one end of the first heating pipe and clamped to complete the self-locking, making it difficult to separate the first heating pipe and the second heating pipe.

[0016] 2. By setting an unlocking component, the bottom of the long and short sides of the rotating seat abuts against the top of the limiting shell, making it easy to retract and extend the positioning rod from the limiting shell. This facilitates the control of the connecting rod, thereby adjusting the position of the clamping plate and enabling the disassembly of the flange between the first and second heating pipes. The push rod can simultaneously control multiple adjusting rods on one side, improving operational efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a heating and ventilation duct flange with a self-locking function proposed in this utility model;

[0018] Figure 2 A three-dimensional structural diagram of a self-locking flange for a heating and ventilation duct flange proposed in this utility model;

[0019] Figure 3 This utility model proposes a heating and ventilation duct flange with a self-locking function. Figure 2 3D magnified view of point A in the middle;

[0020] Figure 4This is a three-dimensional structural diagram of a torsion spring for a heating and ventilation duct flange with a self-locking function proposed in this utility model.

[0021] In the diagram: 1. First heating duct; 2. Second heating duct; 3. Limiting groove; 4. Rotating shaft; 5. Clamping block; 6. Torsion spring; 7. Connecting rod; 8. Limiting shell; 9. Adjusting rod; 10. Positioning rod; 11. Spring; 12. Rotating rod; 13. Rotating seat; 14. Push rod. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0023] Reference Figures 1-4 A heating duct flange with a self-locking function includes a first heating duct 1 and a second heating duct 2. The feature is that a self-locking mechanism is provided between the flange at one end of the first heating duct 1 and the flange opposite to the second heating duct 2. The self-locking mechanism consists of a self-locking component and an unlocking component. The self-locking component realizes the self-locking action between the flange of the first heating duct 1 and the flange of the second heating duct 2.

[0024] The unlocking component enables the rapid release of the lock when the self-locking component is disassembled after being locked.

[0025] To enable the self-locking assembly to operate, the self-locking assembly includes a limiting groove 3, which is located outside the flange at one end of the second heating pipe 2. A rotating shaft 4 is fixedly connected between the inner walls of the limiting groove 3, and a clamping block 5 is rotatably connected to the outside of the rotating shaft 4. The limiting groove 3 limits the rotation of the clamping block 5, allowing the clamping block 5 to rotate and thus clamp the inner wall of the flange at one end of the first heating pipe 1. A torsion spring 6 is sleeved on the outside of the rotating shaft 4. The inner side of the clamping block 5 and one side of the limiting groove 3 are respectively fixedly connected to the two ends of the torsion spring 6. A connecting rod 7 is fixedly connected to one side of multiple clamping blocks 5 on the corresponding side. The torsion spring 6 always applies an outward rotational force to the clamping block 5, allowing the clamping block 5 to be pushed into the inner wall of the flange at one end of the first heating pipe 1 and clamped, thus completing the self-locking and making it difficult to separate the first heating pipe 1 from the second heating pipe 2.

[0026] By setting a self-locking component, the torsion spring 6 always applies an outward rotational force to the clamping block 5, making it easy for the clamping block 5 to be pushed into the inner wall of the flange at one end of the first heating pipe 1 and clamped, thus completing the self-locking and making it difficult to separate the first heating pipe 1 from the second heating pipe 2.

[0027] To enable the unlocking assembly to operate, the unlocking assembly includes a limiting shell 8, which is fixedly connected to the outside of the flange at one end of the first heating pipe 1. An adjusting rod 9 is slidably connected between the inner walls of the limiting shell 8, restricting the movement of the adjusting rod 9 and facilitating its movement within the inner wall of the limiting shell 8. A positioning rod 10 is fixedly connected to the bottom of the adjusting rod 9, and a spring 11 is elastically connected between the top of the positioning rod 10 and the inner top of the limiting shell 8. The adjusting rod 9 moves the positioning rod 10, and the spring 11 facilitates pushing the positioning rod 10 out of the bottom of the limiting shell 8. The bottom of the positioning rod 10 penetrates the top of the flange at one end of the first heating pipe 1 and contacts the top of the connecting rod 7 on the corresponding side. The positioning rod 10 connects with the connecting rod 7. The adjustment rod 9 is designed to facilitate the control of the height of the connecting rod 7, thereby adjusting the rotation angle and height of the clamping block 5. The top of the adjustment rod 9 is fixedly connected to a rotating rod 12, and rotating seats 13 are rotatably connected to both sides of the rotating rod 12. A push rod 14 is fixedly connected to the top of the rotating seat 13 on the corresponding side. By using the bottom of the long side of the rotating seat 13 to abut against the top of the limiting shell 8, it is convenient to retract the positioning rod 10 into the limiting shell 8. When the bottom of the short side of the rotating seat 13 abuts against the top of the limiting shell 8, the positioning rod 10 pushes out of the limiting shell 8 and applies pressure to the connecting rod 7, which facilitates the adjustment of the position of the clamping plate, thereby loosening the flange at one end of the second heating pipe 2 from the flange at one end of the first heating pipe 1. The push rod can simultaneously control multiple adjustment rods 9 on one side, improving operating efficiency.

[0028] By setting an unlocking component, the bottom of the long and short sides of the rotating seat 13 abuts against the top of the limiting shell 8, making it easy to retract and extend the positioning rod 10 from the limiting shell 8. This facilitates the control of the connecting rod 7, thereby adjusting the position of the clamping plate and loosening the flange at one end of the second heating pipe 2 from the flange at one end of the first heating pipe 1. The push rod can simultaneously control multiple adjusting rods 9 on one side, improving operational efficiency.

[0029] Working principle:

[0030] When installing the first heating pipe 1 and the second heating pipe 2 through the flange, push the push rod upward, and the bottom of the long side of the rotating seat 13 abuts against the top of the limiting shell 8, so that the adjusting rod 9 and the positioning rod 10 retract into the limiting shell 8. Push the flange of one end of the second heating pipe 2 into the inner wall between the flange of one end of the first heating pipe 1. The torsion spring 6 always applies an outward rotational force to the clamping block 5, so that the clamping block 5 is pushed into the inner wall of the flange of one end of the first heating pipe 1 and clamped, completing the self-locking, making it difficult to pull out the front flange 1 to separate it from the flange of one end of the first heating pipe 1.

[0031] When disassembling the flange between the first heating pipe 1 and the second heating pipe 2, push the push rod downwards. The bottom of the short side of the rotating seat 13 abuts against the top of the limiting shell 8, causing the adjusting rod 9 and the positioning rod 10 to move downwards within the limiting shell 8. This presses the connecting rod 7 downwards, causing the clamping block 5 to rotate downwards at a certain angle, so that the clamping block 5 no longer contacts the inner wall of one end flange of the first heating pipe 1. This pulls out the second heating pipe 2, thereby releasing the first heating pipe 1 and the second heating pipe 2. The push rod can simultaneously control multiple adjusting rods 9 on one side, improving operational efficiency.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heating air duct flange with a self-locking function, comprising a first heating air duct (1) and a second heating air duct (2), characterized in that: A self-locking mechanism is provided between the flange at one end of the first heating pipe (1) and the flange relative to the second heating pipe (2). The self-locking mechanism consists of a self-locking component and an unlocking component. The self-locking component realizes the self-locking action between the flange of the first heating pipe (1) and the flange of the second heating pipe (2). The unlocking component enables the rapid release of the lock when the self-locking component is disassembled after being locked.

2. A heating and ventilation duct flange with self-locking function according to claim 1, characterized in that: The self-locking assembly includes a limiting groove (3), which is located outside the flange at one end of the second heating pipe (2). A rotating shaft (4) is fixedly connected between the inner walls of the limiting groove (3), and a clamping block (5) is rotatably connected to the outside of the rotating shaft (4).

3. A heating and ventilation duct flange with self-locking function according to claim 2, characterized in that: The rotating shaft (4) is fitted with a torsion spring (6), and the inner side of the clamping block (5) and one side of the limiting groove (3) are respectively fixedly connected to the two ends of the torsion spring (6). A connecting rod (7) is fixedly connected to one side of one of the clamping blocks (5) on the corresponding side.

4. A heating and ventilation duct flange with self-locking function according to claim 3, characterized in that: The unlocking component includes a limiting shell (8), which is fixedly connected to the outside of the flange at one end of the first heating pipe (1), and an adjusting rod (9) is slidably connected between the inner walls of the limiting shell (8).

5. A heating and ventilation duct flange with self-locking function according to claim 4, characterized in that: The bottom of the adjusting rod (9) is fixedly connected to a positioning rod (10), and a spring (11) is elastically connected between the top of the positioning rod (10) and the inner top of the limiting shell (8).

6. A heating and ventilation duct flange with self-locking function according to claim 5, characterized in that: The bottom of the positioning rod (10) passes through the top of the flange at one end of the first heating pipe (1) and contacts the top of the connecting rod (7) on the corresponding side.

7. A heating and ventilation duct flange with self-locking function according to claim 5, characterized in that: The top of the adjusting rod (9) is fixedly connected to a rotating rod (12), and rotating seats (13) are rotatably connected to both sides of the rotating rod (12). A push rod (14) is fixedly connected to the top of the rotating seat (13) on the corresponding side.

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