A new type of air duct and construction method

Abstract

The present application proposes a new type of air duct and construction method, including a pipeline and a connector for connecting the pipeline; the pipeline body is a tube body, the tube body is a thin-walled structure, the cross-section of the pipeline is a rectangle, and the pipeline has two sets of parallel faces; a supporting edge is provided at the end of each set of parallel faces of the pipeline, and a sealing edge is provided at one end of the supporting edge; the connector is a plug strip, and the plug strip adopts a double-walled structure; the plug strip is provided with a locking part for connecting the pipeline; the locking part and the supporting edge and the sealing edge of the pipeline are engaged with each other to achieve the connection of the pipeline. Compared with the prior art, the contributions made by the present invention include that the production of structural parts can be achieved only by pressing and bending; the installation and tightening operations of the pipeline and the connector can be achieved by manual or mechanical tools, the construction is convenient, and the labor intensity is low; it is suitable for different installation scenarios and working conditions, the material usage is low, and the overall quality of the pipeline is light.

Description

Technical Field

[0001] The invention relates to a novel air duct and a construction method, belonging to the technical field of ventilation. Background Art

[0002] At present, most air ducts use angle steel to make flanges, which are connected to air ducts made of galvanized iron plates, and the rigidity of the flanges is used as the connector of the pipes. This method uses a large amount of materials, requires welding between the flange and the air duct, and requires drilling and rust-proofing of the flange. The manufacturing process is cumbersome, and there is a large waste of materials, which is not environmentally friendly. Because the sealing between the flanges is made of materials such as sealing strips, and the rust-proofing is generally done by spraying paint, these two steps will cause environmental problems and material waste.

[0003] At the same time, due to the use of flanges, the weight of the entire air duct is heavy, the construction is difficult, and the workers' operation intensity is high.

[0004] However, if flanges are not used, the pipe's own weight will cause the middle part of the pipe to sag, and long-term use will cause serious deformation of the pipe and deteriorate the sealing performance.

[0005] The market is in urgent need of an air duct that is lightweight, easy to construct, and can ensure sealing and strength, as well as a corresponding construction method. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a new type of air duct and a construction method.

[0007] According to an embodiment of the present invention, a first solution is provided:

[0008] A novel air duct comprises a pipe and a connecting piece for connecting the pipe;

[0009] The pipeline body is a tube body, the tube body is a thin-walled structure, the cross section of the pipeline is rectangular, and the pipeline has two sets of parallel surfaces;

[0010] A supporting edge is provided at the end of each set of parallel surfaces of the pipeline, and a sealing edge is provided at one end of the supporting edge;

[0011] The connecting piece is a plug strip, and the plug strip adopts a double-wall structure;

[0012] The insert is provided with a locking portion for connecting the pipeline;

[0013] The locking portion engages with the supporting edge and the sealing edge of the pipeline to achieve the connection of the pipeline.

[0014] Furthermore, the locking parts are located on both sides of the supporting edge.

[0015] The locking part has two arms, each of which is U-shaped, and the sealing edge is located in the U-shaped structure of the two arms of the locking part.

[0016] Further, the cuttings include cutting one and cutting two,

[0017] The first plugging strip is used to connect a group of parallel surfaces of the pipeline, and the length of the locking portion of the first plugging strip is the same as the length of the supporting edge of the group of parallel surfaces;

[0018] The second cutting strip is used to connect another set of parallel surfaces, and the length of the second cutting strip is the sum of the length of the supporting side of the set of parallel surfaces and twice the height of the first cutting strip after being pressed;

[0019] L=l+h*2;

[0020] L is the length of cutting 2;

[0021] l is the length of the supporting side of the parallel surface of the second connecting cutting;

[0022] h is the height of the cutting after compaction;

[0023] The height of the inserted strip after being compressed is the distance from the end of the locking portion away from the support strip to the end of the closed end away from the support strip after the locking portion of the inserted strip is compressed.

[0024] Further, the cuttings 1 adopt the first type of cuttings or the second type of cuttings;

[0025] Cutting 2 uses type 1 cuttings;

[0026] One type of insert includes a locking portion for connecting a pipe, wherein the locking portion is a double-walled structure;

[0027] A support bar is provided at the top of the locking portion, and a closed end is provided at the other end of the support bar;

[0028] The support strips and closed ends are double-walled;

[0029] The second type of insert includes a locking portion for connecting the pipe, and the locking portion is a double-walled structure;

[0030] A support bar is provided at the top of the locking portion, and a closed end is provided at the other end of the support bar;

[0031] The support strips and closed ends are double-walled;

[0032] Extension sections are provided at both ends of the support bar;

[0033] The end of the extension section is provided with a connecting edge.

[0034] Furthermore, the sealing edge and the supporting edge form a folded angle;

[0035] The support edge is 90 degrees to the rectangular surface of the pipe;

[0036] The sealing edge and the supporting edge form a fold angle, which is controlled between 30 degrees and 60 degrees;

[0037] The locking part of the insert used to connect the pipeline is of a V-shaped structure, and each side arm of the V-shaped structure is of a U-shaped structure. The angle of the V-shaped structure is set to match the fold angle;

[0038] The overall cross-section of the insert is Y-shaped;

[0039] The included angle formed by the connecting edge and the extension section is the same as the fold angle formed by the sealing edge and the supporting edge.

[0040] Furthermore, a reinforcing bulge is also provided on the pipe body near the supporting edge;

[0041] The support bar and the closed end are integrally formed with the lock.

[0042] Furthermore, the closed end is located on both sides of the support bar. One side is of a "凵"-shaped structure, and the other side is of an L-shaped and U-shaped interlocking structure;

[0043] The U-shaped and L-shaped interlocking structure is just used for locking the double-wall structure to prevent the double-wall structure from loosening;

[0044] After the insert is connected to the pipeline and undergoes a pressing operation, the overall cross-section of the locking part is of a C-shaped structure, which tightly engages with the sealing edge and the supporting edge of the pipeline;

[0045] After a certain type of insert is connected to the pipeline and undergoes a pressing operation, the overall cross-section of the locking part is of a C-shaped structure, which tightly engages with the sealing edge and the supporting edge of the pipeline, or tightly engages with the extension section and the connecting edge.

[0046] Furthermore, after the pressing of a certain type of insert, a fixing piece is used for fixing, and the fixing position is the position of the pressed supporting edge and sealing edge.

[0047] Furthermore, after the pressing of a certain type of insert, a fixing piece is used for fixing, and the fixing position is the position of the pressed extension section and the supporting edge.

[0048] Furthermore, a fastener is installed on the end face of the second insert. The fastener is in an overall shape of a single-sided open empty shell, and the installation surface is in a cross shape or a cross shape;

[0049] The fastener is successively provided with a limiting part, an expansion part, a contraction part and a positioning part;

[0050] The expansion part is used to be stuck into the locking part of the second insert;

[0051] The contraction part is used to be stuck into the support bar of the second insert;

[0052] The positioning part is used to be stuck into the closed end of the second insert;

[0053] The limiting part is used to be stuck into the closed end of the first insert.

[0054] Furthermore, after the fastener is installed, a fixing piece is used to connect and fix the fastener and the second insertion strip;

[0055] The fixing position is arranged at the contraction portion.

[0056] Furthermore, the fixing member is a rivet or a bolt.

[0057] According to the implementation scheme of the present invention, using the novel air duct in the first solution provided by the present invention, a second solution is provided:

[0058] A novel air duct construction method comprises the following steps:

[0059] The two ends of the pipeline are placed opposite to each other, the pipeline body is a tube body, the tube body is a thin-walled structure, the cross-section of the pipeline is rectangular, the pipeline has two sets of parallel surfaces, and a supporting edge is provided at the end of each set of parallel surfaces of the pipeline, and a sealing edge is provided at one end of the supporting edge;

[0060] Align the supporting edges of the two pipes;

[0061] A group of parallel surfaces of the pipeline are connected by a plug-in strip. The plug-in strip adopts a double-wall structure and is provided with a locking portion for connecting the pipeline. The locking portion is a V-shaped structure. Each side arm of the V-shaped structure is a U-shaped structure. The angle of the V-shaped structure is matched with the angle. The length of the locking portion of the plug-in strip is the same as the length of the supporting side of the group of parallel surfaces.

[0062] The first insertion strip connection step is to insert the first insertion strip from one side of the two supporting edges and the sealing edge, so that the two sealing edges are located in the U-shaped structure on both sides of the V-shaped structure of the locking portion of the first insertion strip, and to press the first insertion strip by manual hammering or a bite machine, so that the first insertion strip is engaged and locked with the supporting edge and the sealing edge of the pipe;

[0063] Use the second plug to connect the other set of parallel surfaces of the pipeline.

[0064] The length of the second cutting is the sum of the length of the supporting side of the set of parallel surfaces and twice the height of the first cutting after being compressed;

[0065] L=l+h*2;

[0066] L is the length of cutting 2;

[0067] l is the length of the supporting side of the parallel surface of the second connecting cutting;

[0068] h is the height of the cutting after compaction;

[0069] The height of the inserted strip after being compressed is the distance from the end of the locking portion away from the support strip to the end of the closed end away from the support strip after the locking portion of the inserted strip is compressed.

[0070] Further, cutting one adopts a type of cutting;

[0071] Cutting 2 uses type 1 cuttings;

[0072] The second insert passes through the supporting edge and the sealing edge of the pipe so that the supporting edge and the sealing edge are located in the U-shaped structure on both sides of the V-shaped structure of the second insert;

[0073] The second insert is pressed by manual hammering or a biting machine, so that the second insert is bitingly locked with the supporting edge and the sealing edge of the pipe;

[0074] The first type of insert includes a locking portion for connecting a pipe, and the locking portion is a double-wall structure;

[0075] A support bar is provided at the top of the locking portion, and a closed end is provided at the other end of the support bar;

[0076] The support strips and closed ends are double-walled.

[0077] Further, cutting one adopts type II cuttings;

[0078] Cutting 2 uses type 1 cuttings;

[0079] The first type of insert includes a locking portion for connecting a pipe, and the locking portion is a double-wall structure;

[0080] A support bar is provided at the top of the locking portion, and a closed end is provided at the other end of the support bar;

[0081] The support strips and closed ends are double-walled;

[0082] The second type of insert includes a locking portion for connecting the pipe, and the locking portion is a double-walled structure;

[0083] A support bar is provided at the top of the locking portion, and a closed end is provided at the other end of the support bar;

[0084] The support strips and closed ends are double-walled;

[0085] Extension sections are provided at both ends of the support bar; and connecting edges are provided at the ends of the extension sections;

[0086] The length of the extension is the same as the width of the supporting edge;

[0087] The angles of the connecting edge and the sealing edge are consistent, and the length of the connecting edge is less than or equal to the width of the sealing edge;

[0088] The second cutting bar passes through the second type of cutting bar as the extension section and the connection edge of the first cutting bar, the supporting edge and the sealing edge of the pipe, respectively, so that the connecting edge and the sealing edge, the supporting edge and the sealing edge of the pipe are located in the U-shaped structure on both sides of the V-shaped structure of the first type of cutting bar;

[0089] The second - type inserts are compacted by manual hammering or using a seaming machine, so that the second insert is咬合锁紧 with the supporting edge and the sealing edge of the pipe, the extended section and the connecting edge of the first insert.

[0090] Further, after the first - type inserts are compacted, fixing parts are used for fixing, and the fixing positions are the positions of the compacted supporting edge and sealing edge.

[0091] Further, after the first - type inserts are compacted, fixing parts are used for fixing, and the fixing positions are the positions of the compacted extended section and the supporting edge.

[0092] Further, a fastener is installed on the end face of the first - type insert. The fastener is in the shape of a single - side - open hollow shell as a whole, and the installation surface is in the shape of a cross or a similar shape.

[0093] The fastener is sequentially provided with a limiting part, an expansion part, a contraction part and a positioning part.

[0094] The expansion part is used for clamping into the locking part of the second insert.

[0095] The contraction part is used for clamping into the support strip of the second insert.

[0096] The positioning part is used for clamping into the closed end of the second insert.

[0097] The limiting part is used for clamping into the closed end of the first insert.

[0098] After the fastener is installed, a fixing part is used to connect and fix the fastener and the second insert, and the fixing position is set at the contraction part.

[0099] Further, the fixing part uses a rivet or a bolt.

[0100] Compared with the prior art, the beneficial effects of the independent claim of the technical solution provided by this application.

[0101] The present invention has redesigned both the pipe and the connecting piece. Through the innovation of the new structural design and connection method, the production of structural parts can be achieved only through profiling and bending.

[0102] The installation and fastening operations of the pipe and the connecting piece can be realized by manual or mechanical tools, the construction is convenient, and the labor intensity is low.

[0103] It is applicable to different installation scenarios and usage conditions, the material usage is low, and the overall quality of the pipe is light. Description of the Drawings

[0104] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0105] in:

[0106] Figure 1 is a three-dimensional diagram of a pipeline in one embodiment;

[0107] Figure 2 A perspective view of a reinforced drum pipeline in one embodiment;

[0108] Figure 3 A side view of a reinforced drum pipe is provided in one embodiment;

[0109] Figure 4 A three-dimensional diagram of a type of cutting in one embodiment;

[0110] Figure 5 A side view of a type of cutting in one embodiment;

[0111] Figure 6 is a three-dimensional diagram of the second type of cuttings in one embodiment;

[0112] Figure 7 In one embodiment, the insert is connected to the pipeline Figure 1 ;

[0113] Figure 8 In one embodiment, the insert is connected to the pipeline Figure 2 ;

[0114] Fig. 9 In one embodiment, the insert is connected to the pipeline Figure 3 ;

[0115] Fig.10 for Fig. 9 Side view of

[0116] Fig.11 for Fig.10 A partial enlarged view of

[0117] Fig.12 In one embodiment, the insert is connected to the pipeline Figure 4 ;

[0118] Fig.13 for Fig.12 Side view of

[0119] Fig.14 for Fig.13 A partial enlarged view of

[0120] Fig.15 It is an overall connection diagram of the fastener installed after the insert strip and the pipe are pressed together in one embodiment;

[0121] Fig.16 for Fig.15 A top view of

[0122] Fig.17 for Fig.15 Side view of

[0123] Fig.18 for Fig.15 A front view of

[0124] Fig.19 This is an overall connection diagram after the insert and the pipeline are pressed together in one embodiment;

[0125] Fig. 20 for Fig.19 A top view of

[0126] Fig.21 for Fig. 20 A partial enlarged view of

[0127] Fig. 22 for Fig.19 Side view of

[0128] Fig.23 for Fig. 22 A partial enlarged view of

[0129] Fig.24 for Fig.19 A front view of

[0130] Fig.25 A front view of a fastener in one embodiment;

[0131] Fig.26 is a three-dimensional schematic diagram of a fastener in one embodiment;

[0132] Fig. 27 A flowchart of the construction method.

[0133] Reference numerals:

[0134] 1. Pipe; 1-1. Pipe body; 1-2. Support edge; 1-3. Sealing edge; 1-4. Folding angle; 1-5. Reinforcement drum;

[0135] 2. Type I cutting strip; 2-1. Support strip 1; 2-2. Closed end; 2-3. Locking portion;

[0136] 3. Second type of cuttings; 3-3. Extension section; 3-4. Connecting edge;

[0137] 4. Fastener; 4-1. Limiting part; 4-2. Expansion part; 4-3. Contraction part; 4-4. Positioning part; 5. Fixing part. DETAILED DESCRIPTION

[0138] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0139] In order to solve the problems in the prior art such as large amount of materials used, high weight of pipes and great difficulty in construction, the present invention proposes a new type of air duct and a construction method of the new type of air duct to solve the problems existing in the prior art. On the basis of ensuring the sealing and strength of the air duct, the overall air duct is light, the component structure is simple, and the construction is convenient and quick.

[0140] The present invention has been redesigned from both the pipeline and the connector. Through the new structural design and the innovation of the connection method, it is possible to manufacture the structural parts only by pressing and bending, and the installation and tightening operations of the pipeline and the connector can be achieved by manual or mechanical tools.

[0141] Applicable to different installation scenarios and operating conditions, the overall pipeline is lightweight, saves materials, and meets environmental protection requirements.

[0142] A novel air duct comprises a pipeline 1 and a connecting piece used for connecting the pipeline 1.

[0143] like Figure 1-3 As shown;

[0144] The main body of the pipeline 1 is a pipe body 1-1, the pipe body 1-1 is a thin-walled structure, the cross section of the pipeline 1 is rectangular, and the pipeline 1 has two sets of parallel surfaces;

[0145] A supporting edge 1-2 is provided at the end of each set of parallel surfaces of the pipe 1, and a sealing edge 1-3 is provided at one end of the supporting edge 1-2;

[0146] The support edge 1-2 is at 90 degrees to the rectangular surface of the pipe 1;

[0147] The sealing edge 1-3 and the supporting edge 1-2 form a folding angle 1-4. In order to facilitate subsequent connection and pressing operations, the folding angle 1-4 is controlled between 30 degrees and 60 degrees, preferably between 40 degrees and 50 degrees.

[0148] In order to increase the strength of the end of the rectangular surface of the pipe body 1-1, a reinforcing drum 1-5 is also provided on the pipe body 1-1 near the support edge 1-2.

[0149] As Figure 4-5 shown,

[0150] The connecting piece uses a spline;

[0151] One form of the spline is a type-1 spline 2. The locking part 2-3 of the type-1 spline 2 used for connecting the pipeline 1 has a V-shaped structure, and each side arm of the V-shaped structure has a U-shaped structure. The angle of the V-shaped structure is set to match the folding angle 1-4.

[0152] The type-1 spline 2 adopts a double-wall structure, and the double-wall structure can be formed by bending a metal plate.

[0153] In order to further increase the strength of the connecting piece, a support bar 2-1 is provided at the V-shaped top of the type-1 spline 2, and a closed end 2-2 is provided at the other end of the support bar 2-1;

[0154] Both the support bar 2-1 and the closed end 2-2 are of double-wall structure. The same bending process can be used.

[0155] The support bar 2-1 and the closed end 2-2 can be integrally formed with the locking part 2-3.

[0156] The closed end 2-2 is located on both sides of the support bar 2-1. One side is of a "U" shape, and the other side is of an L-shaped and U-shaped interlocking structure.

[0157] The U-shaped and L-shaped interlocking structure is just used for the locking of the double-wall structure to prevent the double-wall structure from loosening.

[0158] The cross-section of the type-1 spline 2 provided with the support bar 2-1 and the closed end 2-2 is integrally Y-shaped.

[0159] The purpose of using the double-wall structure for the spline is that it has the biting and locking effect of a single-layer structure, and at the same time, the outer wall of the double-wall structure also plays the role of supporting and fixing the flange, preventing the inner wall from loosening and deforming, and at the same time increasing the rigid strength of the spline.

[0160] At the same time, through the setting of the support bar 2-1 and the closed end 2-2, the possibility of deformation of the locking part 2-3 is restricted, and further the occurrence of loosening and deformation of the locking part 2-3 of the spline is restricted.

[0161] The reinforcing drum 1-5 can also play a role in fixing the spline to prevent the spline from loosening after the spline is pressed.

[0162] As Figure 6 shown;

[0163] In order to achieve a more secure connection of the pipe 1, a second type of plug 3 is designed based on the first type of plug 2; the structure and function of the second type of plug 3 and the first type of plug 2 are the same and will not be described in detail, and only the differences will be described.

[0164] The improvement lies in that extension sections 3-4 are provided at both ends of the support strip 2-1; a connecting edge 3-5 is provided at the end of the extension section 3-4; the angle formed by the connecting edge 3-5 and the extension section 3-4 is consistent with the angle of the folded angle 1-4 formed by the sealing edge 1-3 and the supporting edge 1-2.

[0165] After the second type insert 3 is connected to the pipe 1 and pressed, the locking portion 2 - 3 has a C-shaped cross section as a whole, and is locked with the sealing edge 1 - 3 and the supporting edge 1 - 2 of the pipe 1 .

[0166] After the first type of insert 2 is connected to the pipe 1 and pressed, the locking portion 2-3 has a C-shaped cross-section as a whole, which is interlocked with the sealing edge 1-3 and the supporting edge 1-2 of the pipe 1; it can also be interlocked with the extension section 3-4 and the connecting edge 3-5.

[0167] Embodiment 1

[0168] like Figure 12-14 As shown in 19-24,

[0169] Place the two ends of the pipe 1 opposite to each other and align the supporting edges 1-2 of the two pipes 1.

[0170] A type of cutting strip 2 is used as cutting strip 1 to connect a group of parallel surfaces of the pipeline 1, and the length of the locking portion 2-3 of the cutting strip 1 is the same as the length of the supporting edge 1-2 of the group of parallel surfaces;

[0171] The method is to insert from one side of the two supporting edges 1-2 and the sealing edge 1-3 so that the two sealing edges 1-3 are located in the U-shaped structure on both sides of the V-shaped structure of the first-type insert 2. The first-type insert 2 is pressed by manual hammering or a bite machine so that the first-type insert 2 is locked with the supporting edge 1-2 and the sealing edge 1-3 of the pipe 1.

[0172] A type of insert 2 is used as the second insert to connect another set of parallel surfaces, passing through the supporting edge 1-2 and the sealing edge 1-3 of the pipe 1, so that the supporting edge 1-2 and the sealing edge 1-3 are located in the U-shaped structure on both sides of the V-shaped structure of the second insert.

[0173] The second insert is pressed by manual hammering or a biting machine, so that the second insert is bit-locked with the supporting edge 1 - 2 and the sealing edge 1 - 3 of the pipe 1 .

[0174] The length of the second cutting is the sum of the length of the supporting edge 1-2 of the set of parallel surfaces and twice the height of the first cutting after being compressed.

[0175] L=l+h*2;

[0176] L is the length of cutting 2;

[0177] l is the length of the supporting side 1-2 of the parallel surface connected to the second cutting strip;

[0178] h is the height of the cutting after compaction;

[0179] The height of the inserted strip after being compressed is the distance from the end of the locking portion 2-3 away from the support strip 2-1 to the end of the closed end 2-2 away from the support strip 2-1 after the locking portion 2-3 of the inserted strip is compressed.

[0180] In this way, the second cutting strip can be used to further limit the cutting strips on the two opposite sides of the previous step.

[0181] In order to make the connection between the insert and the pipe 1 more stable, the first type of insert 2 is fixed with a fixing piece after being pressed, and the fixing position is the position of the pressed supporting edge 1-2 and the sealing edge 1-3, and the number is more than one.

[0182] The fixing member 5 can be in the form of a rivet, and a hole can be punched at the fixing position and fixed with a rivet.

[0183] It can also be fixed by bolts after drilling holes.

[0184] Embodiment 2

[0185] like Figure 7-11 As shown in 15-18,

[0186] Place the two ends of the pipe 1 opposite to each other and align the supporting edges 1-2 of the two pipes 1.

[0187] Use the second type of cutting strip 3 as cutting strip 1 to connect a set of parallel surfaces of two pipes 1, and the length of the locking portion 2-3 of the cutting strip 1 is the same as the length of the supporting edge 1-2 of the set of parallel surfaces;

[0188] The method is to insert from one side of the two supporting edges 1-2 and the sealing edge 1-3, so that the two sealing edges 1-3 are located in the U-shaped structure on both sides of the V-shaped structure of the second type insert 3. The second type insert 3 is pressed by manual hammering or a bite machine, so that the second type insert 3 is locked with the supporting edge 1-2 and the sealing edge 1-3 of the pipe 1.

[0189] The length of the extension section 3-4 is the same as the width of the supporting edge 1-2;

[0190] The angle of the connecting edge 3-5 is consistent with that of the sealing edge 1-3, and the length of the connecting edge 3-5 is less than or equal to the width of the sealing edge 1-3.

[0191] The length of the supporting edge 1 - 2 is the length extending along the parallel surface of the pipeline 1 , and the width is the folded width at 90 degrees to the rectangular surface of the pipeline 1 .

[0192] Then, the first type of insert 2 is used as the second type of insert to connect another set of parallel surfaces, and passes through the extension section 3-4 and the connecting edge 3-5 of the second type of insert 3 as the first type of insert, the supporting edge 1-2 and the sealing edge 1-3 of the pipe 1, so that the connecting edge 3-5 and the sealing edge 1-3, and the supporting edge 1-2 and the sealing edge 1-3 of the pipe 1 are located in the U-shaped structure on both sides of the V-shaped structure of the first type of insert 2.

[0193] The second type of insert 3 is pressed by manual hammering or a biting machine, so that the second insert is bit-locked with the supporting edge 1-2 and the sealing edge 1-3 of the pipe 1, and the extending section 3-4 and the connecting edge 3-5 of the first insert.

[0194] The length of the second cutting is the sum of the length of the supporting edge 1-2 of the set of parallel surfaces and twice the height of the first cutting after being compressed.

[0195] L=l+h*2;

[0196] L is the length of cutting 2;

[0197] l is the length of the supporting side 1-2 of the parallel surface connected to the second cutting strip;

[0198] h is the height of the cutting after compaction;

[0199] The height of the inserted strip after being compressed is the distance from the end of the locking portion 2-3 away from the support strip 2-1 to the end of the closed end 2-2 away from the support strip 2-1 after the locking portion 2-3 of the inserted strip is compressed.

[0200] This method can connect the pipeline 1 and the first type of insert 2 and the second type of insert 3 into one body, so that the structure is more stable, the strength is higher, and the anti-detachment performance of the insert is better.

[0201] In order to improve the overall strength of the insert and further stabilize the connection, the first type of insert 2 after compression is fixed with a fixing piece, and the fixing position is the position of the compression extension section 3-4 and the support edge 1-2, and the number is more than one.

[0202] The fixing member 5 can be in the form of a rivet, and a hole can be punched at the fixing position and fixed with a rivet.

[0203] It can also be fixed by bolts after drilling holes.

[0204] Embodiment 3

[0205] like Figure 25-26 As shown,

[0206] To further increase the structural strength of the insert and its supporting effect on the pipeline 1, a fastener 4 is installed on the end face of the second insert. This enables the fastener 4 to firmly connect the first type of inserts 2 in the first embodiment or the first type of insert 2 and the second type of insert 3 in the second embodiment, making it more rigid and stronger.

[0207] The fastener 4 is integrally in the shape of a hollow shell with a single-sided opening, and the mounting surface is in the shape of a cross or a similar shape.

[0208] The fastener 4 is successively provided with a limiting portion 4-1, an expansion portion 4-2, a contraction portion 4-3, and a positioning portion 4-4.

[0209] The expansion portion 4-2 is used to snap into the locking portion 2-3 of the second insert.

[0210] The contraction portion 4-3 is used to snap into the support bar 2-1 of the second insert.

[0211] The positioning portion 4-4 is used to snap into the closed end 2-2 of the second insert.

[0212] The limiting portion 4-1 is used to snap into the closed end 2-2 of the first insert.

[0213] To prevent the fastener 4 from falling off, after the fastener 4 is installed, a fixing member 5 is used to connect and fix the fastener 4 to the second insert.

[0214] The fixing positions are set at the contraction portion 4-3, and the number is more than one.

[0215] The fixing member 5 can be in the form of a rivet. Holes can be drilled at the fixing positions and rivets can be used for fixing.

[0216] It can also be fixed by bolts after drilling holes.

[0217] Fig.25 Two forms of the fastener 4 with opposite directions of the positioning portion 4-4 and the limiting portion 4-1 are given because the thicknesses of the parts of the closed end 2-2 of the insert on both sides of the support bar 2-1 are inconsistent, and the structure of the fastener 4 needs to be set correspondingly.

[0218] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as within the scope described in this specification.

[0219] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A new type of air duct, characterized in that: It includes a duct and a connector for duct connection; The duct body is a pipe, the pipe is of a thin-wall structure, the cross-section of the duct is rectangular, and the duct has two sets of parallel planes; Support edges are provided at the ends of each set of parallel planes of the duct, and a sealing edge is provided at one end of the support edge; The connector is an insert strip, and the insert strip adopts a double-wall structure; The insert strip is provided with a locking part for connecting the duct; The locking part engages with the support edge and the sealing edge of the duct to achieve the connection of the duct.

2. The novel air duct according to claim 1, wherein The locking part is located on both sides of the support edge, The locking part has two arms, each arm is U-shaped, and the sealing edge is located within the U-shaped structure of the two arms of the locking part.

3. The novel air duct according to claim 2, wherein The insert strip includes insert strip one and insert strip two, Insert strip one is used to connect a set of parallel planes of the duct, and the length of the locking part of insert strip one is the same as the length of the support edge of this set of parallel planes; Insert strip two is used to connect the other set of parallel planes, and the length of insert strip two is the sum of twice the length of the support edge of this set of parallel planes and the height after insert strip one is pressed; L = l + h * 2; L is the length of insert strip two; l is the length of the support edge of the parallel plane connected by insert strip two; h is the height after insert strip one is pressed; The height after insert strip one is pressed is the distance from the end of the locking part away from the support strip to the end of the closed end away from the support strip after the locking part of insert strip one is pressed.

4. The novel air duct according to claim 3, wherein Insert strip one adopts type one insert strip or type two insert strip; Insert strip two adopts type one insert strip; Type one insert strip includes a locking part for connecting the duct, and the locking part is of a double-wall structure; A support strip is provided at the top of the locking part, and a closed end is provided at the other end of the support strip; Both the support strip and the closed end are of a double-wall structure; Type two insert strip includes a locking part for connecting the duct, and the locking part is of a double-wall structure; A support strip is provided at the top of the locking part, and a closed end is provided at the other end of the support strip; Both the support strip and the closed end are of a double-wall structure; Extension segments are provided at both ends of the support strip; Connection edges are provided at the ends of the extension segments.

5. The novel air duct according to claim 4, wherein The sealing edge and the support edge form a fold angle; The support edge is at 90 degrees to the rectangular surface of the duct; The sealing edge and the support edge form a fold angle, and the fold angle is controlled between 30 degrees and 60 degrees; The locking part of the insert strip for connecting the duct is in a V-shaped structure, and each side arm of the V-shaped structure is in a U-shaped structure, and the angle of the V-shaped structure is matched with the fold angle; The overall cross-section of the insert strip is in a Y shape; The angle formed by the connection edge and the extension segment is the same as the fold angle formed by the sealing edge and the support edge.

6. The novel air duct according to claim 5 is characterized in that: It includes: Reinforcing drums are also provided on the pipe body near the support edge; The support strip and the closed end are integrally formed with the locking part.

7. The novel air duct according to claim 6 is characterized in that: It includes: The closed end is located on both sides of the support strip, one side is in a "凵" shape, and one side is in an L-shaped and U-shaped interlocking structure; The L-shaped and U-shaped interlocking structure is just used for locking the double-wall structure to prevent the double-wall structure from loosening; After the insert strip is connected to the duct and undergoes a pressing operation, the overall cross-section of the locking part is in a C-shaped structure and bites tightly with the sealing edge and the support edge of the duct; After a class of inserts are connected to a pipe and subjected to a pressing operation, the overall cross-section of the locking part is a C-shaped structure, which tightly engages with the sealing edge and the supporting edge of the pipe, or tightly engages with the extending section and the connecting edge.

8. The novel air duct according to claim 7 is characterized in that: It includes: After the class of inserts are pressed, a fixing member is used to fix them, and the fixing position is the position of the pressed supporting edge and sealing edge.

9. The novel air duct according to claim 7 is characterized in that: It includes: After the class of inserts are pressed, a fixing member is used to fix them, and the fixing position is the position of the pressed extending section and the supporting edge.

10. The novel air duct according to claim 9, characterized in that: It includes: A fastener is installed on the end face of the second insert. The fastener is in the shape of a hollow shell with a single-sided opening, and the installation surface is in the shape of a cross or a cross; The fastener is sequentially provided with a limiting part, an expansion part, a contraction part and a positioning part; The expansion part is used to be stuck into the locking part of the second insert; The contraction part is used to be stuck into the supporting strip of the second insert; The positioning part is used to be stuck into the closed end of the second insert; The limiting part is used to be stuck into the closed end of the first insert.

11. The novel air duct according to claim 10, characterized in that After the fastener is installed, a fixing member is used to connect and fix the fastener to the second insert; The fixing position is set at the contraction part.

12. The novel air duct according to any one of claims 8, 9, and 11, characterized in that The fixing member is a rivet or a bolt.

13. A novel air duct construction method, characterized in that: It includes the following steps: The two ends of the pipe are placed opposite to each other. The pipe body is a single pipe body, the pipe body is a thin-walled structure, the cross-section of the pipe is rectangular, the pipe has two groups of parallel planes, and a supporting edge is provided at the end of each group of parallel planes of the pipe, and a sealing edge is provided at one end of the supporting edge; Align the supporting edges of the two pipes; Use the first insert to connect a group of parallel planes of the pipe. The first insert has a double-wall structure. The insert is provided with a locking part for connecting the pipe. The locking part is a V-shaped structure. Each side arm of the V-shaped structure is a U-shaped structure. The angle of the V-shaped structure is set to match the fold angle; the length of the locking part of the first insert is the same as the length of the supporting edge of this group of parallel planes; The connection step of the first insert is to insert from one side of the two supporting edges and the sealing edge, so that the two sealing edges are located in the U-shaped structures on both sides of the V-shaped structure of the locking part of the first insert. Use manual beating or a seaming machine to press the first insert, so that the first insert is locked and engaged with the supporting edge and the sealing edge of the pipe; Use the second insert to connect the other group of parallel planes of the pipe, The length of the second insert is the sum of the length of the supporting edge of this group of parallel planes and twice the height after the first insert is pressed; L = l + h * 2; L is the length of the second insert; l is the length of the supporting edge of the parallel plane connected by the second insert; h is the height after the first insert is pressed; The height after the first insert is pressed is the distance from the end of the locking part away from the supporting strip to the end of the closed end away from the supporting strip after the locking part of the first insert is pressed.

14. The construction method of the novel air duct according to claim 13, characterized in that: It includes: The first insert uses a class of inserts; The second insert uses a class of inserts; The second insert passes through the supporting edge and the sealing edge of the pipe, so that the supporting edge and the sealing edge are located in the U-shaped structures on both sides of the V-shaped structure of the second insert; Use manual beating or a seaming machine to press the second insert, so that the second insert is locked and engaged with the supporting edge and the sealing edge of the pipe; The class of inserts includes a locking part for connecting the pipe, and the locking part is a double-wall structure; A supporting strip is provided at the top of the locking part, and a closed end is provided at the other end of the supporting strip; The support bar and the closed end are both double-wall structures.

15. The construction method of the novel air duct according to claim 13, characterized in that: Including: The first insert bar uses the second type of insert bar; The second insert bar uses the first type of insert bar; The first type of insert bar includes a locking part for connecting the pipeline, and the locking part is a double-wall structure; A support bar is arranged at the top end of the locking part, and a closed end is arranged at the other end of the support bar; The support bar and the closed end are both double-wall structures; The second type of insert bar includes a locking part for connecting the pipeline, and the locking part is a double-wall structure; A support bar is arranged at the top end of the locking part, and a closed end is arranged at the other end of the support bar; The support bar and the closed end are both double-wall structures; Extension segments are arranged at both ends of the support bar; connection edges are arranged at the ends of the extension segments; The length of the extension segment is the same as the width of the support edge; The angle between the connection edge and the sealing edge is the same, and the length of the connection edge is less than or equal to the width of the sealing edge; The second insert bar respectively passes through the extension segment and the connection edge of the first insert bar using the second type of insert bar, the support edge and the sealing edge of the pipeline, so that the connection edge and the sealing edge, and the support edge and the sealing edge of the pipeline are located in the U-shaped structures on both sides of the V-shaped structure of the first type of insert bar; The second insert bar is compacted by manual knocking or a seaming machine, so that the second insert bar is咬合locked with the support edge and the sealing edge of the pipeline, and the extension segment and the connection edge of the first insert bar.

16. The novel air duct construction method according to claim 14 or 15, characterized in that: Including: After the first type of insert bar is compacted, a fixing part is used for fixing, and the fixing position is the position of the compacted support edge and sealing edge.

17. The novel air duct construction method according to claim 15, characterized in that: Including: After the first type of insert bar is compacted, a fixing part is used for fixing, and the fixing position is the position of the compacted extension segment and the support edge.

18. The novel air duct construction method according to claim 14 or 15, characterized in that: Including: A fastener is installed on the end face of the first type of insert bar. The fastener is integrally in the shape of a single-sided open hollow shell, and the installation surface is in the shape of a cross or a cross; The fastener is sequentially provided with a limiting part, an expansion part, a contraction part and a positioning part; The expansion part is used for clamping into the locking part of the second insert bar; The contraction part is used for clamping into the support bar of the second insert bar; The positioning part is used for clamping into the closed end of the second insert bar; The limiting part is used for clamping into the closed end of the first insert bar; After the fastener is installed, a fixing part is used to connect and fix the fastener and the second insert bar, and the fixing position is set at the contraction part.

19. The novel air duct construction method according to claim 18, characterized in that: Including: The fixing part uses a rivet or a bolt.

Images