Quick connecting and fixing device for air pipe

Abstract

The utility model discloses an air pipe quick connecting and fixing device which comprises a group of air pipe I and air pipe II which are in butt joint, rectangular connecting flanges are fixed on the outer walls of the air pipe I and the air pipe II, and the two connecting flanges are connected through a plurality of buckle mechanisms; the buckle mechanism comprises a fixing block fixed to one connecting flange and a limiting block fixed to the other connecting flange, a clamping block is hinged to the fixing block, an inserting block is arranged at the end, close to the limiting block, of the clamping block, an inserting groove matched with the inserting block in shape and size is formed in the limiting block, and the inserting block is connected with the inserting groove in an inserted mode. The quick connecting device has the advantages that the structure is simple, use is convenient and fast, air pipes can be quickly connected through the buckling mechanism of the quick connecting device, the quick connecting and fixing effect is achieved, and construction time is saved; and after the buckling mechanism is used for primary quick connection, the screw rod is matched with the nut to conduct secondary reinforcement on the butt joint air pipe, and therefore the stability of air pipe connection is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct connection, in particular to an air duct quick-connect fixing device. Background Art

[0002] Ducts are pipe systems used for air delivery and distribution, and there are two types: composite ducts and inorganic ducts. Ducts can be classified by cross-sectional shape and material. According to cross-sectional shape, ducts can be divided into circular ducts, rectangular ducts, oblate ducts, etc. Circular ducts have the smallest resistance but the largest height and are complex to make, so rectangular ducts are mainly used. According to material classification, ducts can be divided into metal ducts, composite ducts, and polymer ducts. The anti-rust ability of stainless steel ducts can greatly increase the service life of ducts; therefore, stainless steel rectangular ducts are mainly used.

[0003] However, in the prior art, stainless steel air ducts are not convenient for quick connection and fixing, and welding is mostly used for connection during the splicing stage of the air ducts. However, welding brings many subsequent problems, such as inconvenience in disassembly and replacement, and serious air leakage caused by falling welding points, which are difficult to solve. Utility Model Content

[0004] In order to overcome the problem that stainless steel air ducts are not easy to quickly connect and fix in the prior art, the embodiment of the utility model provides an air duct quick connection and fixing device. The technical solution is as follows:

[0005] A duct quick-connect fixing device comprises a group of butt-jointed ducts 1 and 2, wherein the outer walls of the ducts 1 and 2 are fixed with rectangular connecting flanges, and the two connecting flanges are connected by a plurality of snap mechanisms; the snap mechanisms comprise a fixing block fixed on one connecting flange and a limiting block fixed on the other connecting flange, the fixing block is hinged with a clamping block, an inserting block is arranged at one end of the clamping block close to the limiting block, and a slot matching the shape and size of the inserting block is arranged on the limiting block, the inserting block is plugged into the slot, and a group of butt-jointed ducts can be quickly connected together through the snap mechanism, thereby realizing quick connection of the ducts.

[0006] Furthermore, the two connecting flanges are respectively fixed with splicing blocks, and the two splicing blocks are both provided with threaded holes and connected by screws and nuts. The two butted air ducts are also reinforced by providing spare screws to improve the effect of air duct butt connection.

[0007] Furthermore, the plug block is an elastic member, which can be slightly deformed during insertion so as to be inserted into the slot, and return to its original shape after being inserted into the slot so as to provide the effect of connecting and fixing the air duct.

[0008] Furthermore, snap mechanisms are symmetrically fixed on both sides of the upper and lower end surfaces of the connecting flange, and four snap mechanisms are provided, with each two snap mechanisms forming a group, and the two groups of snap mechanisms are symmetrically arranged with the horizontal midline of the air duct as the symmetry axis.

[0009] Furthermore, a U-shaped groove is provided on the upper end of the fixed block, a movable shaft is provided in the U-shaped groove, one end of the clamping block is rotatably connected to the movable shaft, and a trapezoidal groove is provided on the other end of the clamping block close to the limit block, and the insert block is arranged in the trapezoidal groove.

[0010] Furthermore, the splicing blocks are symmetrically arranged on the outer surfaces of both sides of the connecting flange, and the reinforcing screws and the snap-fit ​​mechanism are reasonably arranged.

[0011] The beneficial effects of the technical solution provided by the embodiment of the utility model are: the device has a simple structure and is easy to use. The air duct can be quickly connected through the snap-fit ​​mechanism of the device to achieve a quick-connect and fixation effect, saving construction time; and after the initial quick connection using the snap-fit ​​mechanism, the connecting air duct is reinforced for a second time using a screw and a nut to ensure the stability of the air duct connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings used in the embodiments. Obviously, the drawings listed below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 It is a three-dimensional schematic diagram of the buckle structure of an embodiment of the utility model;

[0015] Figure 3 It is a schematic cross-sectional view of the buckle structure of an embodiment of the utility model;

[0016] Figure 4 yes Figure 3 A magnified view of the structure at center A;

[0017] Figure 5 It is a schematic structural diagram of the air duct 2 and the flange in an embodiment of the utility model.

[0018] In the attached drawings, the components represented by each number are listed as follows: 1. Air duct one; 2. Connecting flange; 3. Clip mechanism; 301. Fixed block; 302. Movable shaft; 303. Block; 304. Limit block; 305. Insert block; 306. Slot; 4. Air duct two; 5. Splicing block; 6. Screw; 7. Nut; 8. Threaded hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] See also Figures 1 to 5 The embodiment of the utility model provides a duct quick-connect fixing device, comprising a set of butt-jointed ducts 1 and ducts 4, the outer walls of the ducts 1 and ducts 4 are both fixed with rectangular connecting flanges 2, and the two connecting flanges 2 are connected by a plurality of snap-fit ​​mechanisms 3;

[0021] The snap mechanism 3 includes a fixed block 301 fixed on one connecting flange 2 and a limit block 304 fixed on the other connecting flange 2. A clamping block 303 is hinged on the fixed block 301. An inserting block 305 is arranged at one end of the clamping block 303 close to the limit block 304. A slot 306 matching the shape and size of the inserting block 305 is arranged on the limit block 304, and the inserting block 305 is plugged into the slot 306.

[0022] The two connecting flanges 2 are respectively fixed with splicing blocks 5, and the two splicing blocks 5 are both provided with threaded holes 8 and connected through screws 6 and nuts 7. The positions and numbers of the splicing blocks 5 are reasonably arranged so as to minimize the impact on the quick connection effect during reinforcement.

[0023] The plug block 305 is an elastic member, which can be slightly deformed during insertion so as to be inserted into the slot 306 , and can return to its original shape after being inserted into the slot 306 so as to provide the effect of connecting and fixing the air duct.

[0024] Buckle mechanisms 3 are symmetrically fixed on both sides of the upper and lower end surfaces of the connecting flange 2. Four buckle mechanisms 3 are provided, and each two buckle mechanisms 3 form a group. The two groups of buckle mechanisms 3 are symmetrically arranged with the horizontal midline of the air duct 1 as the symmetry axis.

[0025] A U-shaped groove is provided at the upper end of the fixing block 301, a movable shaft 302 is provided in the U-shaped groove, one end of the clamping block 303 is rotatably connected to the movable shaft 302, and a trapezoidal groove is provided on a side of the other end of the clamping block 303 close to the limiting block 304, and the inserting block 305 is arranged in the trapezoidal groove.

[0026] The splicing blocks 5 are symmetrically arranged on the outer surfaces of both sides of the connecting flange 2, avoiding the side where the snap mechanism 3 is arranged, so that the fixation of the air duct is more reasonable and effective.

[0027] Instructions for use: When using the device, first fix the two rectangular connecting flanges 2 to a set of butt-jointed air ducts 1 and 4, respectively, and then rotate the clamping block 303 on the snap mechanism 3 to insert the inserting block 305 into the corresponding slot 306, thereby realizing quick connection and fixation of the air ducts, and then install the screw 6 on the splicing block 5 and fix it with the nut 7, thereby realizing the secondary reinforcement effect of the air ducts 1 and 4. The snap mechanism 3 and the screw nut can realize the rapid installation and removal of the air ducts when repairing the air ducts, thereby reducing the construction time.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A duct quick-connect fixing device, characterized in that: It comprises a set of butt-jointed air duct one (1) and air duct two (4), wherein the outer walls of the air duct one (1) and the air duct two (4) are both fixed with rectangular connecting flanges (2), and the two connecting flanges (2) are connected via a plurality of snap-fit ​​mechanisms (3); The buckle mechanism (3) comprises a fixing block (301) fixed on one connecting flange (2) and a limiting block (304) fixed on the other connecting flange (2); a clamping block (303) is hingedly connected to the fixing block (301); an inserting block (305) is arranged at one end of the clamping block (303) close to the limiting block (304); and a slot (306) matching the shape and size of the inserting block (305) is arranged on the limiting block (304); and the inserting block (305) is plugged into the slot (306).

2. The air duct quick-connect fixing device according to claim 1, characterized in that: A splicing block (5) is correspondingly fixed on each of the two connecting flanges (2), and each of the two splicing blocks (5) is provided with a threaded hole (8) and is connected via a screw rod (6) and a nut (7).

3. The air duct quick-connect fixing device according to claim 2, characterized in that: The insert block (305) is an elastic member.

4. The air duct quick-connect fixing device according to claim 3, characterized in that: Buckle mechanisms (3) are symmetrically fixed on both sides of the upper and lower end surfaces of the connecting flange (2), and four buckle mechanisms (3) are provided, with two buckle mechanisms (3) forming a group, and the two groups of buckle mechanisms (3) are symmetrically arranged with the horizontal midline of the air duct (1) as the symmetry axis.

5. The air duct quick-connect fixing device according to claim 4, characterized in that: A U-shaped groove is provided at the upper end of the fixing block (301), a movable shaft (302) is arranged in the U-shaped groove, one end of the clamping block (303) is rotatably connected to the movable shaft (302), and a trapezoidal groove is provided on a side of the other end of the clamping block (303) close to the limiting block (304), and the inserting block (305) is arranged in the trapezoidal groove.

6. The air duct quick-connect fixing device according to claim 5, characterized in that: The splicing blocks (5) are symmetrically arranged on the outer surfaces of both sides of the connecting flange (2).

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