A double-sided color steel plate composite air duct reinforcement support
By designing the snap-fit and locking mechanism of the insertion holes, guide grooves, mounting plates, and locking components, the deformation problem caused by thermal expansion and contraction of double-sided color steel composite air ducts was solved, achieving better reinforcement and ventilation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI ZHENGRONG COOLING & HEATING EQUIP ENG CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-31
AI Technical Summary
Existing double-sided color steel composite air ducts cannot effectively constrain the internal compression and external expansion deformation caused by thermal expansion and contraction, affecting the reinforcement effect, and the internal frame structure may affect the ventilation effect.
A reinforcing bracket including a socket, guide groove, mounting plate, limiting plate and locking component is designed. Through snap-fit and locking, it limits the wall thickness area of the four sides of the air duct to prevent deformation due to thermal expansion and contraction, and performs sealing treatment in the contact area.
It effectively restrains the deformation of the air duct caused by thermal expansion and contraction, improves the reinforcement effect, prevents gas leakage, and enhances the structural stability and ventilation performance of the air duct.
Smart Images

Figure CN224579994U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of composite duct support equipment, specifically a double-sided color steel plate composite duct reinforcement support. Background Technology
[0002] Color-coated steel composite ducts are ducts made from color-coated steel composite sandwich panels. They are a replacement for traditional fiber ducts and a new generation of galvanized iron ducts with secondary insulation. Compared to traditional fiber ducts and galvanized iron ducts, color-coated steel composite ducts not only possess the insulation properties of traditional fiber ducts but also the rigidity of galvanized iron ducts, making them arguably the best material for composite duct manufacturing. Currently, double-sided color-coated steel composite ducts often have internal or external frames added via welding or bolts to prevent deformation due to expansion, thus increasing structural strength. However, adding internal frames can affect ventilation, and bolted or welded connections make installation and disassembly more complicated.
[0003] A patent search revealed a device, publication number "CN220957188U," entitled "A Reinforcement Device for Double-Sided Color Steel Plate Composite Air Ducts." While this device addresses the aforementioned issues, composite air ducts deform due to thermal expansion and contraction during use. Although the aforementioned device can restrain the outward expansion of the duct body, the L-shaped plate can only hold the edge of the duct body and cannot stably restrain the inward compression, thus reducing the reinforcement effect. Therefore, this utility model designs a reinforcement bracket for double-sided color steel plate composite air ducts to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a double-sided color steel plate composite air duct reinforcement support to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-sided color steel plate composite duct reinforcement bracket, comprising a duct body; insertion holes integrally disposed on the left and right sides inside the duct body, and guide grooves integrally disposed at the four corners inside the duct body; mounting plates disposed on the left and right sides outside the duct body, with limiting plates fixed at the upper and lower ends of the mounting plates; a locking assembly assembled inside the mounting plates, the locking assembly being able to lock the mounting plates and the duct body in a mutually fitted state, the locking assembly comprising a rotating rod rotatably disposed inside the mounting plate; and a baffle fixed inside the rotating rod.
[0006] Preferably, the socket is a through-hole design, and the side view cross-section of the socket and the baffle is rectangular, with the side view cross-section of the socket being larger than that of the baffle.
[0007] Preferably, the guide groove and the limiting plate have a T-shaped side cross-section, and the limiting plate and the guide groove are disassembled and assembled by plugging in.
[0008] Preferably, the limiting plate is provided with a buckle assembly on its exterior. The buckle assembly can fix the limiting plate in the position of being inserted into the guide groove. The buckle assembly includes a mounting pin fixed to the top of the left limiting plate; a rotating plate rotatably sleeved outside the mounting pin, and the rotating plate has an integrally formed groove inside; and a locking pin fixed to the top of the right limiting plate.
[0009] Preferably, the mounting pin and the locking pin are designed to be parallel to each other, and the slot and the locking pin are disassembled and assembled by means of a snap-fit connection.
[0010] Preferably, the mounting plate has an integrally formed placement groove inside, the placement groove has a rectangular cross-section when viewed from the side, and a sealing gasket is fixed inside the placement groove.
[0011] Preferably, a connecting block is fixed to the outer wall of the rotating rod, the connecting block is perpendicular to the rotating rod, and the connecting block is parallel to the mounting plate.
[0012] Preferably, the connecting block has an internal threaded pin, and the axis of the pin is designed to be parallel to the axis of the rotating rod.
[0013] Preferably, a first limiting hole is integrally provided at the front end of the mounting plate, and a second limiting hole is integrally provided at the upper end of the mounting plate, wherein the first limiting hole and the second limiting hole are blind holes.
[0014] Preferably, the angle between the first limiting hole and the second limiting hole is 90 degrees, and the first limiting hole and the second limiting hole are connected to the screw pin by insertion.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model uses a snap-fit method to allow the baffle, mounting plate and limiting plate to constrain and reinforce the wall thickness area of the four sides of the duct body. This not only restricts the deformation of the duct body due to outward expansion caused by heat, but also restricts the deformation of the duct body due to inward compression caused by cold, thereby improving the reinforcement effect of the duct body.
[0017] 2. This utility model can seal the area where the mounting plate and the duct body are in contact, preventing the gas inside the duct body from being discharged to the outside through the insertion hole. In addition, through the design of the locking function, it can not only lock the baffle and the insertion hole in a cross-shaped misaligned state, but also lock the limiting plate in a state where it is inserted into the guide groove. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a front perspective view of a double-sided color steel plate composite duct reinforcement bracket according to the present invention.
[0020] Figure 2 This is a three-dimensional view of the internal structure of a double-sided color steel plate composite air duct reinforcement support according to this utility model;
[0021] Figure 3 An exploded perspective view of the duct body, mounting plate, and limiting plate;
[0022] Figure 4 An exploded perspective view of the placement groove and sealing gasket.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 1-Duct body, 2-Insertion hole, 3-Guide groove, 4-Mounting plate, 5-Limiting plate, 6-Locking component, 601-Rotating rod, 602-Baffle, 7-Mounting pin, 8-Rotating plate, 9-Card slot, 10-Card pin, 11-Placement groove, 12-Sealing gasket, 13-Connecting block, 14-Screw pin, 15-First limiting hole, 16-Second limiting hole. Detailed Implementation
[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] Example 1
[0027] A preferred embodiment of the double-sided color steel plate composite duct reinforcement bracket provided by this utility model is as follows: Figures 1 to 4As shown: A double-sided color steel plate composite air duct reinforcement bracket includes an air duct body 1; insertion holes 2 integrally set on the left and right sides inside the air duct body 1, and guide grooves 3 integrally set at the four corners inside the air duct body 1; mounting plates 4 set on the left and right sides outside the air duct body 1, and limiting plates 5 are fixed at the upper and lower ends of the mounting plates 4; locking components 6 assembled inside the mounting plates 4, which can lock the mounting plates 4 and the air duct body 1 in a mutually close state, and the locking components 6 include a rotating rod 601 rotatably set inside the mounting plates 4; and a baffle 602 fixed inside the rotating rod 601.
[0028] The insertion hole 2 is a through hole design. The side view cross-section of the insertion hole 2 and the baffle 602 is rectangular. The side view cross-section of the insertion hole 2 is larger than that of the baffle 602. The side view cross-section of the guide groove 3 and the limiting plate 5 is T-shaped. The limiting plate 5 and the guide groove 3 are disassembled and assembled by plugging in.
[0029] It should be noted that the existing double-sided color steel plate composite duct reinforcement brackets still have certain shortcomings in actual use. They cannot stably constrain the deformation state of the duct body when it is compressed inward, thus reducing the reinforcement effect of the duct body.
[0030] In this embodiment, the operator first moves the baffle 602 through the insertion hole 2 into the interior of the duct body 1, so that the inner wall of the mounting plate 4 and the outer wall of the duct body 1 are in contact with each other. At the same time, the limiting plate 5 is inserted into the interior of the guide groove 3. The operator then rotates the rotating rod 601, so that the rotating rod 601 drives the baffle 602 to rotate, thereby switching the state in which the baffle 602 and the insertion hole 2 are overlapping each other to the state in which they are misaligned. That is, the baffle 602 and the insertion hole 2 are in a cross-shaped state, and the outer wall of the baffle 602 is in contact with the inner wall of the duct body 1. When the duct body 1 is heated and expands, the mounting plate 4 and the limiting plate 5 constrain and reinforce the expansion state of the duct body 1. When the duct body 1 is cooled and compressed, the limiting plate 5 and the baffle 602 constrain and reinforce the compression state of the duct body 1.
[0031] In a further preferred embodiment of this utility model, a buckle assembly is provided on the outside of the limiting plate 5. The buckle assembly can fix the position of the limiting plate 5 when it is inserted into the guide groove 3. The buckle assembly includes a mounting pin 7 fixed on the top of the limiting plate 5 on the left side; a rotating plate 8 rotatably sleeved on the outside of the mounting pin 7, and a slot 9 integrally provided inside the rotating plate 8; and a locking pin 10 fixed on the top of the limiting plate 5 on the right side. The mounting pin 7 and the locking pin 10 are designed to be parallel to each other. The slot 9 and the locking pin 10 are disassembled and assembled by snap-fitting. A placement groove 11 is integrally provided inside the mounting plate 4. The side cross-section of the placement groove 11 is rectangular. A sealing gasket 12 is fixed inside the placement groove 11.
[0032] In this embodiment, after the limiting plate 5 is inserted into the guide groove 3, the operator rotates the rotating plate 8, and the slot 9 at the rotating plate 8 locks the outside of the locking pin 10, thereby locking the state of the limiting plates 5 on both sides together with the mounting plate 4 and the air duct body 1. In addition, when the mounting plate 4 and the air duct body 1 are in contact with each other, the sealing gasket 12 seals the contact area to prevent the gas inside the air duct body 1 from being discharged to the outside through the insertion hole 2.
[0033] Example 2
[0034] Based on Example 1, a preferred embodiment of the double-sided color steel plate composite duct reinforcement bracket provided by this utility model is as follows: Figures 1 to 4 As shown: A connecting block 13 is fixedly provided on the outer wall of the rotating rod 601. The connecting block 13 is perpendicular to the rotating rod 601 and parallel to the mounting plate 4. A screw pin 14 is provided inside the connecting block 13. The axis of the screw pin 14 is designed to be parallel to the axis of the rotating rod 601. A first limiting hole 15 is integrally provided at the front end of the mounting plate 4. A second limiting hole 16 is integrally provided at the upper end of the mounting plate 4. The first limiting hole 15 and the second limiting hole 16 are blind holes. The angle between the first limiting hole 15 and the second limiting hole 16 is 90 degrees. The first limiting hole 15 and the second limiting hole 16 are connected to the screw pin 14 by plugging them in for assembly and disassembly.
[0035] In this embodiment, when the operator needs to rotate the rotating rod 601, the screw pin 14 is first reversed to separate the screw pin 14 from the first limiting hole 15. Then, the rotating rod 601 and the baffle 602 are rotated 90 degrees, and the screw pin 14 is screwed into the second limiting hole 16. In this way, the baffle 602 and the insertion hole 2 are locked in a cross-shaped misalignment state.
[0036] In summary, this application utilizes a snap-fit mechanism to constrain and reinforce the wall thickness of the duct body on all four sides. This not only limits the outward expansion deformation of the duct body due to heat but also restricts the inward compression deformation due to cooling, thus improving the reinforcement effect. This application can seal the area where the mounting plate and the duct body meet, preventing gas inside the duct body from escaping through the insertion hole. The locking function design allows for locking not only in a cross-shaped, misaligned position between the baffle and the insertion hole but also in a position where the limiting plate is inserted into the guide groove.
Claims
1. A double-sided color steel plate composite air pipe reinforcing support, characterized in that, include: Duct body (1); Insertion holes (2) are integrally set on the left and right sides inside the air duct body (1), and guide grooves (3) are integrally set at the four corners inside the air duct body (1). Mounting plates (4) are installed on the left and right sides of the outside of the air duct body (1), and limiting plates (5) are fixed at the upper and lower ends of the outside of the mounting plates (4). A locking assembly (6) is installed inside the mounting plate (4). The locking assembly (6) can lock the mounting plate (4) and the duct body (1) in a mutually fitted state. The locking assembly (6) includes: Rotate the rotating rod (601) located inside the mounting plate (4); A baffle (602) is fixed inside the rotating rod (601).
2. The double-sided color steel plate composite duct reinforcement support according to claim 1, characterized in that: The socket (2) is a through hole design. The side view cross-section of the socket (2) and the baffle (602) is rectangular. The side view cross-section of the socket (2) is larger than the side view cross-section of the baffle (602).
3. The double-sided color steel plate composite duct reinforcement support according to claim 1, characterized in that: The guide groove (3) and the limiting plate (5) have a T-shaped side cross-section. The limiting plate (5) and the guide groove (3) are disassembled and assembled by plugging in.
4. The double-sided color steel plate composite duct reinforcement support according to claim 1, characterized in that: The limiting plate (5) is provided with a buckle assembly on its exterior. The buckle assembly can fix the position of the limiting plate (5) when it is inserted into the guide groove (3). The buckle assembly includes: Mounting pin (7) fixed on the top of the left-side limiting plate (5); Rotary plate (8) is rotatably sleeved outside the mounting pin (7), and a slot (9) is integrally provided inside the rotating plate (8); A locking pin (10) is fixed to the top of the limiting plate (5) on the right side.
5. The double-sided color steel plate composite duct reinforcement support according to claim 4, characterized in that: The mounting pin (7) and the locking pin (10) are designed to be parallel to each other, and the slot (9) and the locking pin (10) are disassembled and assembled by means of locking.
6. The double-sided color steel plate composite duct reinforcement support according to claim 1, characterized in that: The mounting plate (4) has an integrally formed placement groove (11), the placement groove (11) has a rectangular cross-section when viewed from the side, and a sealing gasket (12) is fixed inside the placement groove (11).
7. The double-sided color steel plate composite duct reinforcement support according to claim 1, characterized in that: A connecting block (13) is fixed on the outer wall of the rotating rod (601). The connecting block (13) is perpendicular to the rotating rod (601) and parallel to the mounting plate (4).
8. The double-sided color steel plate composite duct reinforcement support according to claim 7, characterized in that: The connecting block (13) has a threaded pin (14) inside, and the axis of the pin (14) is designed to be parallel to the axis of the rotating rod (601).
9. The double-sided color steel plate composite duct reinforcement support according to claim 1, characterized in that: The mounting plate (4) has a first limiting hole (15) integrally provided at the front end of the interior, and a second limiting hole (16) integrally provided at the upper end of the interior, and the first limiting hole (15) and the second limiting hole (16) are blind holes.
10. The double-sided color steel plate composite duct reinforcement support according to claim 9, characterized in that: The angle between the first limiting hole (15) and the second limiting hole (16) is 90 degrees. The first limiting hole (15) and the second limiting hole (16) are connected to the screw (14) by means of plugging and disassembling.