Ventilation pipe and ventilation pipe assembly comprising same

Abstract

The utility model provides a ventilation pipe and a ventilation pipe assembly comprising the same. The ventilation pipe comprises a cylindrical pipe body; the first clamping piece is arranged at the first axial end of the pipe main body; the second clamping piece is arranged at the second axial end of the pipe body, the shape of the second clamping piece is matched with that of the first clamping piece in a clamping mode, in the connecting process, the first clamping piece of the ventilation pipe can be connected to the second clamping piece of the adjacent ventilation pipe in a clamping mode, and connecting operation is simple.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation equipment technology, specifically relating to a ventilation duct and a ventilation duct assembly containing the same. Background Technology

[0002] Ventilation ducts are hollow pipes used for ventilation. During construction, ventilation ducts need to be connected on-site to form ventilation systems.

[0003] Currently, there are several ways to connect ventilation ducts. For example, welding can ensure the stability of the connection, but it requires many auxiliary welding tools and is relatively complex. In particular, welding has requirements and limitations on the material of the ventilation duct itself. Another example is the threaded connection, which is generally suitable for ventilation ducts with a circular cross-section. In the connection process, one ventilation duct to be connected needs to be screwed on, which is cumbersome.

[0004] Therefore, there is a need to design a ventilation duct and a ventilation duct assembly containing it to simplify the connection operation between ventilation ducts. Utility Model Content

[0005] To address some or all of the aforementioned technical problems in the prior art, this utility model proposes a ventilation duct and a ventilation duct assembly including the same. The ventilation duct has snap-fit ​​connectors at both ends, allowing for easy connection to adjacent ventilation ducts and simplifying the connection process.

[0006] According to one aspect of the present invention, a ventilation duct is provided, comprising:

[0007] cylindrical tube body,

[0008] A first snap-fit ​​member is disposed at the first axial end of the tube body.

[0009] A second snap-fit ​​member is disposed at the second axial end of the tube body, the shape of the second snap-fit ​​member being snap-fit ​​matched with the shape of the first snap-fit ​​member.

[0010] In one embodiment, one of the first snap-fit ​​member and the second snap-fit ​​member includes snap-fit ​​teeth, and the other of the first snap-fit ​​member and the second snap-fit ​​member includes snap-fit ​​grooves. The snap-fit ​​teeth and the snap-fit ​​grooves are snap-fit ​​matched in shape and position. One of the matching snap-fit ​​teeth and the snap-fit ​​grooves is disposed on the outer wall of the pipe body and the other is disposed on the inner wall of the pipe body.

[0011] In one embodiment, the snap-fit ​​teeth include a first snap-fit ​​tooth and a second snap-fit ​​tooth, and the snap-fit ​​groove includes a first snap-fit ​​groove and a second snap-fit ​​groove. The first snap-fit ​​tooth and the first snap-fit ​​groove are disposed on the outer wall of the pipe body and included in the first snap-fit ​​member, and the second snap-fit ​​tooth and the second snap-fit ​​groove are disposed on the inner wall of the pipe body and included in the second snap-fit ​​member. The first snap-fit ​​tooth matches the second snap-fit ​​groove, and the second snap-fit ​​tooth matches the first snap-fit ​​groove.

[0012] In one embodiment, the first snap-fit ​​tooth is constructed as a helical tooth, and the radial dimension of the first snap-fit ​​tooth gradually increases from the first end to the second end; the second snap-fit ​​tooth is constructed as a helical tooth, and the radial dimension of the second snap-fit ​​tooth gradually increases from the second end to the first end.

[0013] In one embodiment, a first adhesive layer is provided on at least one tooth surface of the first snap-fit ​​tooth and the second snap-fit ​​tooth.

[0014] In one embodiment, the tube body is integrally connected to the first snap-fit ​​member and the second snap-fit ​​member.

[0015] In one embodiment, the tube body and the first and second snap-fit ​​components are made of polypropylene or rigid PVC material.

[0016] According to another aspect of the present invention, a ventilation duct assembly is provided, comprising at least two ventilation ducts as described above, wherein adjacent ventilation ducts are snapped together by a first snap-fit ​​member and a second snap-fit ​​member, and the main bodies of adjacent ventilation ducts are connected.

[0017] In one embodiment, a sealing ring is fitted onto the outer wall of the connection between adjacent ventilation ducts.

[0018] In one embodiment, a second adhesive layer is provided between the ventilation duct and the sealing ring.

[0019] Compared with the prior art, the advantages of this utility model are: by providing a first snap-fit ​​and a second snap-fit ​​at both ends of the main body of the ventilation pipe, the first snap-fit ​​of the ventilation pipe can be snapped onto the second snap-fit ​​of the adjacent ventilation pipe during the connection process, making the connection operation simple. Attached Figure Description

[0020] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, in which:

[0021] Figure 1 A cross-sectional view of a ventilation duct according to an embodiment of the present invention is shown;

[0022] Figure 2A cross-sectional view of a ventilation pipe connection according to an embodiment of the present invention is shown;

[0023] Figure 3 A ventilation duct assembly according to one embodiment of the present invention is shown.

[0024] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0025] To make the technical solution and advantages of this utility model clearer, the exemplary embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0026] An embodiment of this utility model provides a ventilation duct. For example... Figure 1 As shown, the ventilation duct 1 includes a duct body 11, a first snap-fit ​​member 12, and a second snap-fit ​​member 13. The duct body 11 has a cylindrical structure, and its inner cavity serves as a ventilation channel. The first snap-fit ​​member 12 is located at the first axial end of the duct body 11 (at...). Figure 1 (The direction is consistent with the left end), serving as a connecting component for adjacent ventilation ducts 1. A second snap-fit ​​member 13 is provided at the axial second end of the duct body 11 (in the direction of the left end). Figure 1 (The middle and right ends are aligned), serving as connecting components for adjacent ventilation ducts 1. The shape of the second snap-fit ​​member 13 is matched with the shape of the first snap-fit ​​member 12, meaning that the connection between two adjacent ventilation ducts 1 can be achieved by snapping the first snap-fit ​​member 12 of one ventilation duct 1 with the second snap-fit ​​member 13 of another ventilation duct 1. Figure 2 As shown, during the assembly of ventilation duct 1, the first snap-fit ​​connector 12 of ventilation duct 1 snaps onto the second snap-fit ​​connector 13 of the adjacent ventilation duct 1 to achieve the connection between the two ventilation ducts 1. This arrangement makes it very easy to connect multiple ventilation ducts 1 sequentially, meeting construction requirements. This snap-fit ​​method avoids the use of tools such as welding, reducing on-site construction needs, lowering construction costs, and simplifying connection operations. In addition, this snap-fit ​​connection method is not only suitable for round ventilation ducts, but also for square or other structural ventilation ducts, making it widely applicable. In particular, it avoids twisting operations, reducing the complexity of connection and installation.

[0027] One of the first snap-fit ​​member 12 and the second snap-fit ​​member 13 includes snap-fit ​​teeth 14. The other of the first snap-fit ​​member 12 and the second snap-fit ​​member 13 includes snap-fit ​​grooves 15. The snap-fit ​​teeth 14 and the snap-fit ​​grooves 15 are snap-fit ​​matched in shape and position. One of the matching snap-fit ​​teeth 14 and the snap-fit ​​grooves 15 is located on the outer wall of the pipe body 11, while the other is located on the inner wall of the pipe body 11. That is, two adjacent ventilation pipes 1 are snap-fit ​​connected through the tooth and groove engagement, which is a simple and easy-to-implement setup.

[0028] Specifically, the snap-fit ​​tooth 14 includes a first snap-fit ​​tooth 141 and a second snap-fit ​​tooth 142. The snap-fit ​​groove 15 includes a first snap-fit ​​groove 151 and a second snap-fit ​​groove 152. The first snap-fit ​​tooth 141 and the first snap-fit ​​groove 151 are disposed on the outer wall of the pipe body 11, and in the axial direction of the pipe body 11, the first snap-fit ​​groove 151 is closer to the second end relative to the first snap-fit ​​tooth 141. Therefore, the first snap-fit ​​member 12 includes the first snap-fit ​​tooth 141 and the first snap-fit ​​groove 151. The second snap-fit ​​tooth 142 and the second snap-fit ​​groove 152 are disposed on the inner wall of the pipe body 11, and in the axial direction of the pipe body 11, the second snap-fit ​​groove 152 is closer to the first end relative to the second snap-fit ​​tooth 142. Therefore, the second snap-fit ​​member 13 includes the second snap-fit ​​tooth 142 and the second snap-fit ​​groove 152. The first snap-fit ​​tooth 141 matches the second snap-fit ​​groove 152, and the second snap-fit ​​tooth 142 matches the first snap-fit ​​groove 151. Therefore, during the connection of ventilation pipes 1, in two adjacent ventilation pipes 1, the first locking tooth 141 of one ventilation pipe 1 engages with the second locking groove 152 of the other ventilation pipe 1, while the second locking tooth 142 of the other ventilation pipe 1 engages with the first locking groove 151 of one ventilation pipe 1. It is evident that the above arrangement ensures the stability of the connection between the two ventilation pipes 1.

[0029] The first snap-fit ​​tooth 141 is constructed as a helical tooth. The radial dimension of the first snap-fit ​​tooth 141 gradually increases from the first end to the second end. The second snap-fit ​​tooth 142 is also constructed as a helical tooth, and its radial dimension gradually increases from the second end to the first end. Similarly, the structure and shape of the first snap-fit ​​groove 151 and the second snap-fit ​​groove 152 match the above-described configuration. During the snap-fit ​​installation process, the wedge-shaped snap-fit ​​tooth 14 effectively ensures that the first end of one ventilation pipe 1 can be smoothly inserted into the second end of another ventilation pipe 1, and the first snap-fit ​​member 12 can be smoothly snapped onto the second snap-fit ​​member 13.

[0030] A first adhesive layer (not shown in the figure) is provided on at least one tooth surface of the first snap-fit ​​tooth 141 and the second snap-fit ​​tooth 142. This first adhesive layer can be applied by brushing adhesive on-site. The first adhesive layer can increase the connection stability of two adjacent ventilation ducts 1. Preferably, the first adhesive layer is circumferentially closed on the duct body 11. Therefore, the first adhesive layer also serves as a seal, preventing backfill material from easily entering the ventilation duct when the ventilation duct 1 is used as a ground-level air supply duct. It should be noted that this application does not further limit the material of the first adhesive layer; selecting a suitable adhesive based on the material of the ventilation duct 1 is foreseeable to those skilled in the art.

[0031] The tube body 11 is integrally connected to the first snap-fit ​​connector 12 and the second snap-fit ​​connector 13. The tube body 11, the first snap-fit ​​connector 12, and the second snap-fit ​​connector 13 are made of polypropylene or rigid PVC material. For example, the tube body 11, the first snap-fit ​​connector 12, and the second snap-fit ​​connector 13 can be produced by an integral injection molding process. This setup is inexpensive and easy to implement.

[0032] This application also relates to ventilation duct assemblies. For example... Figure 3 As shown, the ventilation duct assembly includes at least two ventilation ducts 1. Adjacent ventilation ducts 1 are connected to each other via a first snap-fit ​​member 12 and a second snap-fit ​​member 13, and the duct bodies 11 of adjacent ventilation ducts 1 are connected. Figure 3 For example, the left ventilation duct 1 needs to be connected to the right ventilation duct 1. First, apply adhesive, for example, by fully coating the beveled surface of the first snap-fit ​​tooth 141. Then, insert the duct. The first snap-fit ​​member 12 of the right ventilation duct 1 needs to be inserted into the inner cavity of the left ventilation duct 1. During insertion, the beveled surfaces of the first snap-fit ​​tooth 141 and the second snap-fit ​​tooth 142 guide each other, ensuring effortless insertion. As insertion proceeds, the first snap-fit ​​tooth 141 embeds into the second snap-fit ​​groove 152, and simultaneously, the second snap-fit ​​tooth 142 embeds into the first snap-fit ​​groove 151. At this point, the first snap-fit ​​member 12 and the second snap-fit ​​member 13 are engaged, and with the addition of adhesive, the two ventilation ducts 1 are effectively connected. This connection method is convenient, has a short construction period, and is simple and quick to implement. In particular, the first snap-fit ​​member 12 and the second snap-fit ​​member 13 are also in a nested relationship, which prevents backfill material from blocking the ventilation duct when it is used as a ground-level duct.

[0033] In addition, to improve the sealing ability of the connection of ventilation duct 1, a sealing ring 2 is fitted onto the outer wall of the connection between adjacent ventilation ducts 1. This sealing ring 2 can be a rubber sealing ring. After the connection of adjacent ventilation ducts 1 is completed, the sealing ring 2 is fitted onto the connection of the ventilation ducts 1 to prevent material from entering the inner cavity of the ventilation duct 1. Furthermore, a second adhesive layer (not shown in the figure) is provided between the ventilation duct 1 and the sealing ring 2. This second adhesive layer can be applied by brushing adhesive on site, and the specific adhesive material can be selected according to the actual situation. The second adhesive layer and the sealing ring 2 not only effectively prevent impurities from entering the inner cavity of the ventilation duct 1, but also further increase the tightness of the connection between the ventilation ducts 1.

[0034] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the present invention, and all changes and / or modifications made according to the embodiments of the present invention should be covered within the protection scope of the present invention.

Claims

1. A ventilation duct, characterized in that, include: cylindrical tube body, A first snap-fit ​​member is disposed at the first axial end of the tube body. A second snap-fit ​​member is disposed at the second axial end of the pipe body, the shape of the second snap-fit ​​member being snap-fit ​​matched with the shape of the first snap-fit ​​member. In this embodiment, one of the first and second snap-fit ​​components includes a snap-fit ​​tooth, and the other includes a snap-fit ​​groove. The snap-fit ​​tooth and the snap-fit ​​groove are snap-fit ​​matched in shape and position. One of the matching snap-fit ​​tooth and the snap-fit ​​groove is disposed on the outer wall of the pipe body, and the other is disposed on the inner wall of the pipe body. The snap-fit ​​tooth includes a first snap-fit ​​tooth and a second snap-fit ​​tooth, and the snap-fit ​​groove includes a first snap-fit ​​groove and a second snap-fit ​​groove. The first snap-fit ​​tooth and the first snap-fit ​​groove are disposed on the outer wall of the pipe body and included in the first snap-fit ​​component. The second snap-fitting tooth and the second snap-fitting groove are disposed on the inner wall of the pipe body and included in the second snap-fitting member. The first snap-fitting tooth matches the second snap-fitting groove, and the second snap-fitting tooth matches the first snap-fitting groove. The first snap-fitting tooth is constructed as a helical tooth, and its radial dimension gradually increases from the first end to the second end. The second snap-fitting tooth is constructed as a helical tooth, and its radial dimension gradually increases from the second end to the first end. A first adhesive layer is provided on at least one tooth surface of the first snap-fitting tooth and the second snap-fitting tooth.

2. The ventilation duct according to claim 1, characterized in that, The tube body is integrally connected to the first snap-fit ​​component and the second snap-fit ​​component.

3. The ventilation duct according to claim 2, characterized in that, The tube body, the first snap-fit ​​fitting, and the second snap-fit ​​fitting are made of polypropylene or rigid PVC material.

4. A ventilation duct assembly, characterized in that, It includes at least two ventilation pipes according to any one of claims 1 to 3, wherein adjacent ventilation pipes are snapped together by the first snap-fit ​​member and the second snap-fit ​​member, and the pipe bodies of adjacent ventilation pipes are connected.

5. The ventilation duct assembly according to claim 4, characterized in that, A sealing ring is fitted onto the outer wall of the connection between adjacent ventilation ducts.

6. The ventilation duct assembly according to claim 5, characterized in that, A second adhesive layer is provided between the ventilation duct and the sealing ring.

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