Square-shaped air pipe

Abstract

The embodiment of the utility model provides a square-shaped air pipe. The square-shaped air pipe comprises an inserting tongue, a first plate body, a second plate body, a third plate body, a fourth plate body and an inserting groove which are formed by rolling a one-piece iron sheet and connected in sequence. The second plate body is vertically bent towards the inner side of the first plate body, the third plate body is vertically bent towards the inner side of the second plate body and is parallel to the first plate body, and the fourth plate body is vertically bent towards the inner side of the third plate body and is perpendicular to the first plate body; the insertion tongue is vertically arranged on the first long edge of the first plate body and extends along the length direction of the first plate body; the slot is arranged on the first long edge of the fourth plate body, is positioned on the outer side of the fourth plate body and extends along the length direction of the fourth plate body; under the condition that the inserting tongues are connected with the inserting grooves in an inserted mode, the first plate body, the second plate body, the third plate body and the fourth plate body define a square-shaped air pipe. According to the technical scheme, the structure of the square-shaped air pipe can be effectively simplified, and the manufacturing cost of the square-shaped air pipe is reduced.

Description

Technical Field

[0001] This application relates to the field of duct technology, and more particularly to a U-shaped duct. Background Technology

[0002] like Figure 1 As shown, the existing U-shaped duct 1 is typically constructed by splicing together four sheet metal 11s and four angle irons 12s. During the splicing process, two adjacent sheet metal 11s are connected by an angle iron 12, requiring a total of four connection operations. Each connection operation requires riveting the edges of two adjacent sheet metal 11s to the two right-angled edges of the corresponding angle iron 12, resulting in a complex forming structure and high cost for the existing U-shaped duct 1. Utility Model Content

[0003] This application provides a U-shaped duct to solve or alleviate the technical problems of complex forming structure and high cost of U-shaped ducts in the prior art.

[0004] This application provides a U-shaped air duct, including a tongue, a first plate, a second plate, a third plate, a fourth plate, and a slot, all made of a single sheet of iron and connected in sequence.

[0005] The second plate is bent vertically toward the inside of the first plate, the third plate is bent vertically toward the inside of the second plate and is parallel to the first plate, and the fourth plate is bent vertically toward the inside of the third plate and is perpendicular to the first plate.

[0006] The tongue is vertically disposed on the first long side of the first plate and extends along the length of the first plate; wherein, the first long side of the first plate is the long side of the first plate adjacent to the fourth plate.

[0007] The slot is located on the first long side of the fourth plate and is situated on the outer side of the fourth plate, extending along the length of the fourth plate; wherein, the first long side of the fourth plate is the long side of the fourth plate adjacent to the first plate.

[0008] When the tongue and slot are inserted, the first plate, the second plate, the third plate, and the fourth plate together form a U-shaped duct.

[0009] In one embodiment, the slot includes a first slot wall, a slot bottom, and a second slot wall formed by rolling a single sheet of iron.

[0010] The first groove wall is arranged parallel to the outside of the first long side of the fourth plate. The first groove wall and the second groove wall are parallel to each other, and the width of the second groove wall is greater than the width of the first groove wall. The bottom of the groove is connected between the first groove wall and the second groove wall.

[0011] In the case of the plug tongue and the plug slot being plugged, the part of the second slot wall wider than the first slot wall is bent vertically towards the first plate body to limit the plug tongue in the plug slot.

[0012] In an embodiment, the mouth-shaped air duct further comprises a plurality of connecting plates rolled by a sheet of iron, each of the connecting plates is arranged on each short side of each of the first plate body, the second plate body, the third plate body and the fourth plate body, and each of the connecting plates is perpendicular to the corresponding plate body; an angle bracket is connected between two adjacent connecting plates, and a connecting hole is formed in the angle bracket.

[0013] In an embodiment, the angle bracket is L-shaped, and the angle bracket is arranged on the outer side of the two adjacent connecting plates.

[0014] Each of the connecting plates is bent outwardly to form a bent part at the side edge away from the corresponding plate body, and the bent part is bent towards the outer side edge of the corresponding angle bracket to fix the angle bracket between the two adjacent connecting plates.

[0015] In an embodiment, the outer side edge and the inner side edge of the angle bracket are both bent towards the first side, and the bent part wraps the outer side edge of the angle bracket after being bent.

[0016] The inner side edge of the angle bracket abuts against the two plate bodies opposite to the angle bracket.

[0017] In an embodiment, the middle part of each of the connecting plates is provided with a first protruding groove protruding outwardly, and each of the first protruding grooves extends along the length direction of the corresponding connecting plate.

[0018] The angle bracket comprises a first part and a second part connected perpendicularly, and the middle part of each of the first part and the second part is provided with a second protruding groove protruding towards the first side of the angle bracket, and each of the second protruding grooves extends along the length direction of the corresponding part.

[0019] The two second protruding grooves on each of the angle brackets correspond to the first protruding grooves on the corresponding two connecting plates in a one-to-one manner.

[0020] In an embodiment, the connecting hole is formed at the connection between the first part and the second part.

[0021] The embodiment of the application adopts the technical scheme, since the tongue, the first plate body, the second plate body, the third plate body, the fourth plate body and the slot are formed by rolling a piece of iron sheet and sequentially connected, the second plate body is vertically bent towards the inner side of the first plate body, the third plate body is vertically bent towards the inner side of the second plate body and parallel to the first plate body, the fourth plate body is vertically bent towards the inner side of the third plate body and perpendicular to the first plate body, the tongue is vertically arranged on the first long side of the first plate body and extends along the length direction of the first plate body, and the slot is arranged on the first long side of the fourth plate body and located on the outer side of the fourth plate body and extends along the length direction of the fourth plate body. This structure only needs to insert the tongue into the slot, so that the first plate body, the second plate body, the third plate body and the fourth plate body are combined to form a duct with a mouth-shaped end face, that is, a mouth-shaped duct. Compared with the prior art, the mouth-shaped duct of the application inserts the tongue into the slot, thereby connecting the first long side of the first plate body and the first long side of the fourth plate body, so as to realize the splicing of the first plate body, the second plate body, the third plate body and the fourth plate body to form a mouth-shaped duct. The whole splicing process only needs to connect the adjacent first plate body and fourth plate body without setting an angle iron, so the process is simple, thereby helping to simplify the structure and preparation cost of the mouth-shaped duct. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The structure of the mouth-shaped duct in the prior art is shown.

[0024] Figure 2 The structure of the mouth-shaped duct according to an embodiment of the application is shown.

[0025] Figure 3 The structure of the mouth-shaped duct in the prior art is shown. Figure 2 The structure of the mouth-shaped duct in the prior art is shown.

[0026] Figure 4 The structure of the mouth-shaped duct in the prior art is shown. Figure 2 The structure of the mouth-shaped duct in the prior art is shown.

[0027] Figure 5 The structure of the angle code is shown.

[0028] Figure 6 The assembly of the angle code is shown. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] Figure 2 A structural schematic diagram of a mouth-shaped air duct according to an embodiment of the present application is shown. Figure 3 As shown in Figure 2 A structural schematic diagram of the mouth-shaped air duct after removing the connecting plate.

[0031] As shown in Figure 2 and Figure 3 The mouth-shaped air duct 1 includes a plug 21, a first plate body 22, a second plate body 23, a third plate body 24, a fourth plate body 25 and a slot 26 connected in sequence and formed by rolling a sheet of iron. The second plate body 23 is vertically bent towards the inner side of the first plate body 22, the third plate body 24 is vertically bent towards the inner side of the second plate body 23 and parallel to the first plate body 22, and the fourth plate body 25 is vertically bent towards the inner side of the third plate body 24 and perpendicular to the first plate body 22. The plug 21 is vertically arranged on the first long side of the first plate body 22 and extends along the length direction of the first plate body 22, wherein the first long side of the first plate body 22 is the long side of the first plate body 22 adjacent to the fourth plate body 25. The slot 26 is arranged on the first long side of the fourth plate body 25 and located on the outer side of the fourth plate body 25, and extends along the length direction of the fourth plate body 25, wherein the first long side of the fourth plate body 25 is the long side of the fourth plate body 25 adjacent to the first plate body 22. In the case of plug-in connection between the plug 21 and the slot 26, the first plate body 22, the second plate body 23, the third plate body 24 and the fourth plate body 25 form the mouth-shaped air duct 1.

[0032] In the present application, the tongue 21, the first plate body 22, the second plate body 23, the third plate body 24, the fourth plate body 25 and the slot 26 are formed by rolling a piece of iron sheet and sequentially connected, the second plate body 23 is vertically bent towards the inner side of the first plate body 22, the third plate body 24 is vertically bent towards the inner side of the second plate body 23 and parallel to the first plate body 22, the fourth plate body 25 is vertically bent towards the inner side of the third plate body 24 and perpendicular to the first plate body 22, the tongue 21 is vertically arranged on the first long side of the first plate body 22 and extends along the length direction of the first plate body 22, and the slot 26 is arranged on the first long side of the fourth plate body 25 and located on the outer side of the fourth plate body 25 and extends along the length direction of the fourth plate body 25. With this structure, the first plate body 22, the second plate body 23, the third plate body 24 and the fourth plate body 25 can be combined to form the air duct with a mouth-shaped end face, i.e. the mouth-shaped air duct 1, by only inserting the tongue 21 into the slot 26. Compared with the prior art, the first long side of the first plate body 22 and the first long side of the fourth plate body 25 can be connected by inserting the tongue 21 into the slot 26, so that the first plate body 22, the second plate body 23, the third plate body 24 and the fourth plate body 25 can be spliced to form the mouth-shaped air duct 1. The entire splicing process only needs to connect the adjacent first plate body 22 and fourth plate body 25 without the need of setting angle iron, so the process is simple, which helps to simplify the structure and manufacturing cost of the mouth-shaped air duct 1.

[0033] In one embodiment, as shown in Figure 3 , Figure 4 the slot 26 includes a first slot wall 261, a slot bottom 262 and a second slot wall 263 formed by rolling a piece of iron sheet; the first slot wall 261 is arranged parallel to the outer side of the first long side of the fourth plate body 25, the first slot wall 261 is parallel to the second slot wall 263 and the width of the second slot wall 263 is greater than that of the first slot wall 261, and the slot bottom 262 is connected between the first slot wall 261 and the second slot wall 263; in the case of inserting the tongue 21 into the slot 26, the part of the second slot wall 263 wider than the first slot wall 261 is used to be vertically bent towards the first plate body 22 to limit the tongue 21 in the slot 26. Based on this, the insertion between the tongue 21 and the slot 26 can be reinforced to prevent the tongue 21 from falling out of the slot 26, thereby stabilizing the shape of the entire mouth-shaped air duct 1.

[0034] In one embodiment, as shown in Figure 2 , Figure 5 and Figure 6As shown, the mouth-shaped air duct 1 further comprises a plurality of connecting plates 27 formed by rolling a sheet of iron, each connecting plate 27 is arranged on each short side of each plate body of the first plate body 22, the second plate body 23, the third plate body 24 and the fourth plate body 25, and each connecting plate 27 is perpendicular to the corresponding plate body; two adjacent connecting plates 27 are connected by an angle code 31, and the angle code 31 is provided with a connecting hole 311; wherein the connecting hole 311 is used to pass through a fastener, such as a bolt, a screw, etc. This structure can make the four connecting plates 27 arranged at the mouth of the mouth-shaped air duct 1, and each connecting plate 27 is perpendicular to the mouth-shaped air duct 1, and the two adjacent connecting plates 27 are connected by the angle code 31. By adding the angle code 31 between the two adjacent connecting plates 27, not only can each connecting plate 27 be fixedly connected by the angle code 31, but also the two adjacent mouth-shaped air ducts 1 can be connected by the angle code 31, so as to flexibly control the length of the mouth-shaped air duct 1 assembly composed of a plurality of mouth-shaped air ducts 1, so as to adapt to different lengths of installation sites. In addition, after the two adjacent mouth-shaped air ducts 1 are connected, the four connecting plates 27 on the two adjacent mouth-shaped air ducts 1 abut one by one, which can not only increase the strength of the mouth-shaped air duct 1 assembly, but also improve the sealing performance of the mouth-shaped air duct 1 assembly.

[0035] Wherein, the connection between the two adjacent mouth-shaped air ducts 1 can be that the fastener is passed through the connecting holes 311 of the two angle codes 31 arranged opposite to each other of the two adjacent mouth-shaped air ducts 1, and the connection is realized by the fastener.

[0036] In an embodiment, as shown in Figure 2 , Figure 5 and Figure 6 As shown, the angle code 31 is L-shaped, and the angle code 31 is arranged outside the two adjacent connecting plates 27; the side edge of each connecting plate 27 away from the corresponding plate body is outwardly bent to form a bent portion 271, and the bent portion 271 is used to bend towards the outer side edge 312 of the corresponding angle code 31 to fix the angle code 31 between the two adjacent connecting plates 27.

[0037] Wherein, the bending of the bent portion 271 towards the outer side edge 312 of the corresponding angle code 31 can be realized by knocking the bent portion 271 towards the outer side edge 312 of the corresponding angle code 31.

[0038] The above scheme, by bending the side edge of the connecting plate 27 away from the corresponding plate body outwardly to form a bent portion 271, and bending the bent portion 271 towards the outer side edge 312 of the corresponding angle code 31, the bent portion 271 and the connecting plate 27 can wrap the outer side edge 312 of the angle code 31, so as to fix the angle code 31 between the two adjacent connecting plates 27, which can stabilize the shape of the connecting plate 27.

[0039] In an embodiment, as shown in Figure 5 and Figure 6 The outer edge 312 and the inner edge 313 of the corner code 31 are both bent towards the first side, and the bent part 271 is wrapped around the outer edge 312 of the corner code 31 after bending. By bending the outer edge 312 and the inner edge 313 of the corner code 31 towards the first side, the bent part 271 can be engaged with the outer edge 312 of the corner code 31 after bending, which is conducive to increasing the stability of the connection between the corner code 31 and the two adjacent connecting plates 27. In addition, the inner edge 313 of the corner code 31 is in abutment with the two adjacent connecting plates 27, which can avoid the inner edge 313 of the corner code 31 from shaking with the two adjacent connecting plates 27, and also helps to increase the stability of the connection between the corner code 31 and the two adjacent connecting plates 27.

[0040] In an embodiment, as shown in Figure 2 , Figure 5 and Figure 6 The first protruding groove 272 is arranged on the middle part of each connecting plate 27, and extends along the length direction of the corresponding connecting plate 27. The corner code 31 comprises a first part 31a and a second part 31b connected perpendicularly, and the middle part of each of the first part 31a and the second part 31b is provided with a second protruding groove 314 protruding towards the first side of the corner code 31, and each second protruding groove 314 extends along the length direction of the corresponding part of the corner code 31. The two second protruding grooves 314 on each corner code 31 correspond to the first protruding grooves 272 on the corresponding two connecting plates 27. This structure can further increase the stability of the connection between the middle part of the first part 31a and the second part 31b of the corner code 31 and the middle part of the corresponding connecting plate 27, thereby improving the stability of the shape of the rectangular air duct 1.

[0041] In an embodiment, as shown in Figure 5 and Figure 6 The connecting hole 311 is arranged at the joint of the first part 31a and the second part 31b, so that the connecting hole 311 is located at the top corner of the L-shaped corner code 31, and the fastener can be conveniently arranged.

[0042] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A U-shaped air duct, characterized in that, It includes a tongue, a first plate, a second plate, a third plate, a fourth plate, and a slot, all made of a single sheet of iron and connected in sequence. The second plate is bent vertically toward the inside of the first plate, the third plate is bent vertically toward the inside of the second plate and is parallel to the first plate, and the fourth plate is bent vertically toward the inside of the third plate and is perpendicular to the first plate. The tongue is vertically disposed on the first long side of the first plate and extends along the length of the first plate; wherein, the first long side of the first plate is the long side of the first plate adjacent to the fourth plate. The slot is disposed on the first long side of the fourth plate and is located outside the fourth plate, extending along the length direction of the fourth plate; wherein, the first long side of the fourth plate is the long side of the fourth plate adjacent to the first plate. When the tongue is inserted into the slot, the first plate, the second plate, the third plate, and the fourth plate together form the U-shaped duct.

2. The U-shaped duct according to claim 1, characterized in that, The slot includes a first slot wall, a slot bottom, and a second slot wall formed by rolling the one-piece sheet metal. The first groove wall is arranged parallel to the outside of the first long side of the fourth plate. The first groove wall and the second groove wall are parallel to each other and the width of the second groove wall is greater than the width of the first groove wall. The bottom of the groove is connected between the first groove wall and the second groove wall. When the tongue is inserted into the slot, the portion of the second slot wall that is wider than the first slot wall is bent vertically toward the first plate to confine the tongue within the slot.

3. The U-shaped duct according to claim 1, characterized in that, The U-shaped duct also includes multiple connecting plates formed by rolling the sheet metal. Each connecting plate is respectively disposed on the short side of each of the first plate, the second plate, the third plate, and the fourth plate, and each connecting plate is perpendicular to the corresponding plate. An angle bracket is connected between two adjacent connecting plates, and the angle bracket has a connection hole.

4. The U-shaped duct according to claim 3, characterized in that, The corner bracket is L-shaped and is disposed on the outer side of two adjacent connecting plates; Each of the connecting plates has its edge away from the corresponding plate body bent outward to form a bent portion. The bent portion is used to bend toward the outer edge of the corresponding corner bracket to fix the corner bracket between two adjacent connecting plates.

5. The U-shaped duct according to claim 4, characterized in that, The outer and inner edges of the corner bracket are both bent toward the first side, and the bent portion wraps around the outer edge of the corner bracket after bending. The inner edge of the corner bracket abuts against the two opposite plates.

6. The U-shaped duct according to claim 3, characterized in that, Each of the connecting plates has a first protruding groove protruding outward in the middle, and each first protruding groove extends along the length direction of the corresponding connecting plate. The corner code includes a first part and a second part that are perpendicularly connected to each other. The middle part of the first part and the second part are provided with a second protrusion that protrudes toward the first side of the corner code, and each second protrusion extends along the length direction of the corresponding part. The two second protrusions on each of the corner brackets are engaged with the first protrusions on the two corresponding connecting plates.

7. The U-shaped duct according to claim 6, characterized in that, The connection hole is located at the connection between the first part and the second part.

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