Fastener and square air pipe with same
By designing a fastener to hold the bent part of the connecting plate of the U-shaped duct, the problem of complex assembly in the existing technology is solved, and a fast and efficient duct connection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-24
AI Technical Summary
The assembly method of the U-shaped duct in the existing technology is complicated, resulting in low assembly efficiency.
The fastener design includes a first fold, a second fold, a third fold, and a fourth fold connected in sequence. By clamping the bent parts of adjacent duct connecting plates, it achieves a quick connection without the need for screws or nuts.
It simplifies the duct assembly process, improves assembly efficiency, and enhances the stability and strength of the connection.
Smart Images
Figure CN224033277U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of duct technology, and more particularly to a fastener and a U-shaped duct with the fastener. Background Technology
[0002] like Figure 1 As shown, in the prior art, the U-shaped duct 11 includes a U-shaped duct body 111 and a plurality of connecting plates 112 located at its ends. Each connecting plate 112 is folded outward and is arranged perpendicular to the U-shaped duct body 111. Angle brackets 12 are provided between adjacent connecting plates 112, and connecting holes 12A are provided on the angle brackets 12.
[0003] In the process of assembling multiple U-shaped air ducts 11 into a U-shaped air duct 11 assembly, first, the multiple connecting plates 112 of two adjacent U-shaped air ducts 11 are aligned one-to-one, so that the four corner brackets 12 on the two U-shaped air ducts 11 are aligned one-to-one, and then the screws ( Figure 1 (Not shown) The screws are passed through the connecting holes 12A of the two opposite corner brackets 12 and tightened with nuts. Then, screws and nuts are installed on the two opposite connecting plates 112 to achieve the splicing of the two U-shaped ducts 11. However, since connecting the two opposite connecting plates 112 by means of screws and nuts involves two operations, namely passing through the screws and tightening the nuts, the assembly method of the U-shaped ducts 11 is relatively complicated and not conducive to improving assembly efficiency. Summary of the Invention
[0004] This application provides a fastener and a U-shaped duct with the fastener to solve or alleviate the technical problem that the assembly method in the prior art is complicated and not conducive to improving assembly efficiency.
[0005] As one aspect of the embodiments of this application, this application provides a fastener that utilizes a U-shaped duct. The U-shaped duct includes a duct body and multiple connecting plates located at the ends of the duct body. Each connecting plate is folded outwards and perpendicular to the duct body. The edges of each connecting plate are bent outwards to form a bent portion. The fastener includes a first fold, a second fold, a third fold, and a fourth fold connected in sequence.
[0006] The second fold bends inward toward the inside of the first fold, the width of the second fold is greater than the width of the first fold, and the angle between the second fold and the first fold is an acute angle, so as to form the first clip;
[0007] The width of the third fold is equal to the width of the second fold, the angle between the third fold and the second fold is an obtuse angle, the fourth fold bends toward the inside of the third fold, the width of the fourth fold is greater than the width of the third fold, and the angle between the fourth fold and the third fold is an acute angle, so as to form the second clip.
[0008] A limiting groove is defined between the first clamping piece and the second clamping piece;
[0009] When the first and second clamps hold the bent portions of the two oppositely arranged connecting plates of two adjacent U-shaped air ducts, the corresponding two bent portions are limited within the limiting groove.
[0010] In one embodiment, the angle between the first fold and the second fold is equal to the angle between the third fold and the fourth fold.
[0011] In one embodiment, the fastener further includes a fifth fold piece, which is connected to the side of the fourth fold piece away from the third fold piece and is bent toward the outside of the fourth fold piece. The included angle between the fifth fold piece and the fourth fold piece is an obtuse angle.
[0012] In one embodiment, the fastener further includes at least two reinforcing ribs spaced apart, each reinforcing rib extending along the width direction of the first fold, second fold, third fold, and fourth fold, and protruding outward from the first fold, second fold, third fold, and fourth fold.
[0013] As another aspect of the embodiments of this application, the embodiments of this application provide a U-shaped air duct with fasteners, including at least two U-shaped air ducts, each U-shaped air duct including a U-shaped air duct body and a plurality of connecting plates located at the end of the U-shaped air duct, each connecting plate is folded outward and perpendicular to the corresponding U-shaped air duct body, and the edge of each connecting plate is bent outward to form a bending part, and at least two U-shaped air ducts are arranged adjacent to each other, such that the plurality of connecting plates of the two adjacent U-shaped air ducts are arranged opposite each other;
[0014] Each of the two oppositely arranged connecting plates of two adjacent U-shaped air ducts is provided with a number of fasteners of any of the above embodiments at intervals;
[0015] In this fastener, the first and second clamping pieces clamp the bent portions of two oppositely arranged connecting plates, and limit the corresponding two bent portions within the corresponding limiting grooves.
[0016] In one embodiment, each connecting plate is further provided with an outwardly protruding groove, which is located between the bend of the corresponding connecting plate and the opening of the U-shaped duct, and a slot is defined between the groove and the bend.
[0017] In one embodiment, on two oppositely arranged connecting plates, the assembly directions of two adjacent fasteners are opposite.
[0018] The embodiments of this application adopt the above-described technical solution. By setting the fastener to include a first fold, a second fold, a third fold, and a fourth fold connected in sequence, and setting the second fold to bend towards the inside of the first fold, the width of the second fold is greater than the width of the first fold, and the included angle between the second fold and the first fold is an acute angle, the first fold and the second fold can form a first clamping piece. The width of the third fold is equal to the width of the second fold, and the included angle between the third fold and the second fold is an obtuse angle. The fourth fold is bent towards the inside of the third fold, the width of the fourth fold is greater than the width of the third fold, and the included angle between the fourth fold and the third fold is an acute angle, the third fold and the fourth fold can form a second clamping piece, and a limiting groove is defined between the first clamping piece and the second clamping piece. During assembly, by clamping the bent portions of the two opposing connecting plates of two adjacent U-shaped ducts with the first and second clamping plates, the corresponding bent portions are confined within the limiting grooves, allowing the two opposing connecting plates to connect with each other. This achieves the splicing of two adjacent U-shaped ducts without requiring the insertion of screws and tightening of nuts as in existing technologies. Therefore, the assembly method between adjacent U-shaped ducts can be simplified, improving the assembly efficiency of U-shaped ducts. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 The diagram shows a schematic of the splicing of two adjacent square-shaped air ducts in the prior art.
[0021] Figure 2 A schematic diagram of the U-shaped ductwork according to this application is shown.
[0022] Figure 3 A schematic diagram of the fastener according to an embodiment of this application is shown.
[0023] Figure 4 This diagram illustrates the assembly of fasteners with two adjacent U-shaped ducts in an embodiment of this application.
[0024] Figure 5 This is a partial structural schematic diagram of a U-shaped duct 10 with fastener 13 according to an embodiment of this application.
[0025] Figure 6 This diagram shows the end of the first clip being engaged in a slot in one of the two opposing connecting plates.
[0026] Figure 7 This diagram shows the second clip abutting against another of the two opposing connecting plates. Detailed Implementation
[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0028] Figure 2 A schematic diagram of the U-shaped ductwork according to this application is shown. Figure 3 A schematic diagram of the fastener according to an embodiment of this application is shown. Figure 4 This diagram illustrates the assembly of fasteners with two adjacent U-shaped ducts in an embodiment of this application.
[0029] like Figures 2 to 4 As shown, the fastener 13 of this application uses a U-shaped air duct 11. The U-shaped air duct 11 includes a U-shaped air duct body 111 and a plurality of connecting plates 112 located at the ends of the U-shaped air duct body 111. The plurality of connecting plates 112 are all folded outward and perpendicular to the U-shaped air duct body 111. The edges of each connecting plate 112 are all bent outward to form a bending portion 112A.
[0030] For example, the end face of the U-shaped duct body 111 is U-shaped, so that the end of the U-shaped duct body 111 has four sides, and four connecting plates 112 are connected to the four sides of the U-shaped duct body 111 one by one. Among them, the cross-section of the bend portion 112A formed by the outward bending of the edge of each connecting plate 112 can be arched.
[0031] like Figure 3As shown, the fastener 13 includes a first flap 131, a second flap 132, a third flap 133, and a fourth flap 134 connected sequentially. The second flap 132 is bent inwards towards the first flap 131, its width is greater than the width of the first flap 131, and the angle α between the second flap 132 and the first flap 131 is acute, forming a first clip 13A. The third flap 133 has a width equal to the width of the second flap 132, and the angle β between the third flap 133 and the second flap 132 is obtuse. The fourth flap 134 is bent inwards towards the third flap 133, its width is greater than the width of the third flap 133, and the angle γ between the fourth flap 134 and the third flap 133 is acute, forming a second clip 13B. A limiting groove (not marked in the figure) is defined between the first clip 13A and the second clip 13B. When the first clamping piece 13A and the second clamping piece 13B clamp the bent portions 112A of the two oppositely arranged connecting plates 112 of the two adjacent U-shaped air ducts 11, the two corresponding bent portions 112A are limited within the limiting groove. The widths of the first folding piece 131, the second folding piece 132, the third folding piece 133, and the fourth folding piece 134 are all the short side dimensions of the corresponding folding piece.
[0032] The above solution, by setting the fastener 13 to include a first fold 131, a second fold 132, a third fold 133, and a fourth fold 134 connected in sequence, and setting the second fold 132 to bend towards the inside of the first fold 131, the width of the second fold 132 is greater than the width of the first fold 131, and the included angle α between the second fold 132 and the first fold 131 is an acute angle, can make the first fold 131 and the second fold 132 form a first clamping piece 13A, and setting the third fold 133... The width is equal to the width of the second fold 132. The angle between the third fold 133 and the second fold 132 is an obtuse angle β. The fourth fold 134 bends towards the inside of the third fold 133. The width of the fourth fold 134 is greater than the width of the third fold 133, and the angle γ between the fourth fold 134 and the third fold 133 is an acute angle. This allows the third fold 133 and the fourth fold 134 to form the second clamp 13B, and to define a limiting groove between the first clamp 13A and the second clamp 13B. During assembly, by clamping the bent portions 112A of the two oppositely arranged connecting plates 112 of two adjacent U-shaped air ducts 11 with the first clamp 13A and the second clamp 13B, the corresponding two bent portions 112A can be limited within the limiting groove, allowing the two oppositely arranged connecting plates 112 to connect with each other, thereby achieving the splicing of two adjacent U-shaped air ducts 11 without performing the operations of inserting screws and tightening nuts as in the prior art. Based on this, the assembly method between two adjacent U-shaped air ducts 11 can be simplified, which is conducive to improving the assembly efficiency of the U-shaped air ducts 11.
[0033] In one implementation, such as Figure 3 As shown, the angle α between the first fold 131 and the second fold 132 is equal to the angle γ between the third fold 133 and the fourth fold 134. Since the widths of the second fold 132 and the third fold 133 are equal, by setting the angle α between the first fold 131 and the second fold 132 to be equal to the angle γ between the third fold 133 and the fourth fold 134, it is beneficial to ensure the consistency of the clamping force of the first clamping piece 13A and the second clamping piece 13B on the bent portions 112A of the two oppositely arranged connecting plates 112, thereby avoiding the impact on the stability and firmness of the connection due to the different clamping forces on both sides of the bent portions 112A of the two oppositely arranged connecting plates 112.
[0034] In one implementation, such as Figure 3 As shown, the fastener 13 also includes a fifth fold 135, which is connected to the side of the fourth fold 134 away from the third fold 133 and bends outward toward the fourth fold 134. The included angle δ between the fifth fold 135 and the fourth fold 134 is an obtuse angle. By setting the fifth fold 135 on the side of the fourth fold 134 away from the third fold 133 and making the included angle δ between the fifth fold 135 and the fourth fold 134 an obtuse angle, it is beneficial to increase the contact area between the fifth fold 135 and the connecting plate 112 it contacts, and to avoid the second clamping piece 13B clamping the corresponding connecting plate 112 and causing deformation of the corresponding connecting plate 112.
[0035] In one implementation, such as Figure 4 As shown, the fastener 13 also includes at least two reinforcing ribs 136 spaced apart. Each reinforcing rib 136 extends along the width direction of the first flap 131, the second flap 132, the third flap 133, and the fourth flap 134, and is formed by protruding outward from the first flap 131, the second flap 132, the third flap 133, and the fourth flap 134. In this way, the strength of the first clamping piece 13A and the second clamping piece 13B can be increased, thereby increasing the strength of the fastener 13.
[0036] Figure 5 This diagram shows a partial structural schematic of a U-shaped duct with fasteners according to an embodiment of this application.
[0037] like Figure 5 As shown, the U-shaped duct 10 with fastener 13 includes at least two U-shaped ducts 11. Each U-shaped duct 11 includes a U-shaped duct body 111 and multiple connecting plates 112 located at the end of the U-shaped duct 11. Each connecting plate 112 is folded outward and perpendicular to the corresponding U-shaped duct body 111. The edges of each connecting plate 112 are bent outward to form a bending portion 112A. At least two U-shaped ducts 11 are arranged adjacent to each other, such that the multiple connecting plates 112 of the two adjacent U-shaped ducts 11 are arranged opposite each other.
[0038] On any two oppositely arranged connecting plates 112 of two adjacent U-shaped air ducts 11, a plurality of fasteners 13 of any of the above embodiments are spaced apart. Among them, the first clamping piece 13A and the second clamping piece 13B of each fastener 13 clamp the bent portions 112A of the two oppositely arranged connecting plates 112, and limit the corresponding two bent portions 112A in the corresponding limiting grooves.
[0039] It should be noted that since the U-shaped duct 10 with fastener 13 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.
[0040] In one implementation, please refer to the following: Figure 2 , Figure 5 and Figure 6 Each connecting plate 112 is also provided with an outwardly protruding groove 112B. The groove 112B is located between the bend 112A of the corresponding connecting plate 112 and the opening of the U-shaped duct 11. A slot 112C is defined between the groove 112B and the bend 112A. Based on this, the end of the first clamping piece 13A of the fastener 13 can be locked in the slot 112C to limit the position of the end of the first clamping piece 13A, which helps to improve the firmness and stability of the fastener 13 in clamping the bends 112A of the two oppositely arranged connecting plates 112.
[0041] In one implementation, please refer to the following: Figure 2 , Figures 5 to 7 On two oppositely arranged connecting plates 112, adjacent fasteners 13 are assembled in opposite directions. For example, if the first clamping piece 13A of one of the two adjacent fasteners 13 clamps the first connecting plate 112A of the two oppositely arranged connecting plates 112, then the second clamping piece 13B of one of the fasteners 13 clamps the second connecting plate 112B of the two oppositely arranged connecting plates 112; if the first clamping piece 13A of the other of the two adjacent fasteners 13 clamps the second connecting plate 112B of the two oppositely arranged connecting plates 112, then the second clamping piece 13B of the other fastener 13 clamps the first connecting plate 112A of the two oppositely arranged connecting plates 112. Since the end of the first clip 13A of the same fastener 13 is engaged in the slot 112C of one of the two oppositely arranged connecting plates 112, and the second clip 13B abuts against the other of the two oppositely arranged connecting plates 112, the arrangement of this embodiment helps to ensure the consistency of the overall connection strength of the two oppositely arranged connecting plates 112 and avoids deformation of the two oppositely arranged connecting plates 112 that would affect the sealing performance.
[0042] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A fastener, characterized in that, The application uses a U-shaped duct, which includes a U-shaped duct body and multiple connecting plates located at the ends of the U-shaped duct body. Each connecting plate is folded outwards and perpendicular to the U-shaped duct body. The edges of each connecting plate are bent outwards to form a bend. The fastener includes a first fold, a second fold, a third fold, and a fourth fold connected in sequence. The second fold bends toward the inside of the first fold, the width of the second fold is greater than the width of the first fold, and the angle between the second fold and the first fold is an acute angle, so as to form the first clip; The width of the third fold is equal to the width of the second fold, the angle between the third fold and the second fold is an obtuse angle, the fourth fold is bent toward the inside of the third fold, the width of the fourth fold is greater than the width of the third fold, and the angle between the fourth fold and the third fold is an acute angle, so as to form the second clip. A limiting groove is defined between the first clamping piece and the second clamping piece; When the first clamp and the second clamp clamp the bent portions of the two oppositely arranged connecting plates of the two adjacent U-shaped air ducts, the two corresponding bent portions are limited within the limiting groove.
2. The fastener according to claim 1, characterized in that, The angle between the first fold and the second fold is equal to the angle between the third fold and the fourth fold.
3. The fastener according to claim 1, characterized in that, The fastener also includes a fifth fold piece, which is connected to the side of the fourth fold piece away from the third fold piece and is bent toward the outside of the fourth fold piece. The included angle between the fifth fold piece and the fourth fold piece is an obtuse angle.
4. The fastener according to claim 1, characterized in that, The fastener also includes at least two reinforcing ribs spaced apart, each of which extends along the width direction of the first flap, the second flap, the third flap, and the fourth flap, and is formed by the first flap, the second flap, the third flap, and the fourth flap protruding outward.
5. A U-shaped duct with fasteners, characterized in that, The system includes at least two U-shaped ducts, each U-shaped duct including a duct body and multiple connecting plates located at the ends of the duct. Each connecting plate is folded outward and perpendicular to the corresponding U-shaped duct body. The edges of each connecting plate are bent outward to form a bend. At least two U-shaped ducts are arranged adjacent to each other, such that the multiple connecting plates of the two adjacent U-shaped ducts are arranged opposite each other. Each of the two adjacent U-shaped air ducts is provided with a plurality of fasteners as described in any one of claims 1 to 4 at intervals on any two oppositely arranged connecting plates; The first and second clamping pieces of each fastener clamp the bent portions of two oppositely arranged connecting plates and limit the corresponding two bent portions within the corresponding limiting grooves.
6. The U-shaped duct according to claim 5, characterized in that, Each of the connecting plates is also provided with an outwardly protruding groove, which is located between the bend of the corresponding connecting plate and the opening of the U-shaped air duct, and a retaining groove is defined between the groove and the bend.
7. The U-shaped duct according to claim 6, characterized in that, On the two oppositely arranged connecting plates, the two adjacent fasteners are assembled in opposite directions.