A pipe connection clamping device

Abstract

The present application relates to a kind of pipeline connecting clamping devices, wherein pipeline connecting clamping device includes riveting piece, elastic washer and nut.The riveting piece is provided with through center hole and counterbore set away from rivet section, and its one end in axial direction has the radial expansion deformation of rivet section, and its other end in axial direction is provided with outer thread section;The elastic washer is contained in the counterbore and is provided with through hole for the connecting pipe to pass through;The nut is provided with internal thread and pressing hole, the nut is matched with the outer thread section by the internal thread, and the inner wall of the pressing hole is used to extrude the elastic washer.The present application is combined design by riveting piece, elastic washer and nut, and single-sided blind installation is realized by using the deformation of rivet section, the traditional hexagonal tightening feature is removed, and the processing and manufacturing difficulty is reduced;When tightening the nut, the elastic washer is inwards contracted by being extruded radially by the inner wall of the pressing hole, so that the clamping of the intermediate connecting pipe is realized.

Description

Technical Field

[0001] This invention relates to a fastener, and more particularly to a pipe connection clamping device. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this invention and does not constitute prior art.

[0003] In fluid transport and heat dissipation piping system engineering, it is often necessary to fix flexible pipes transporting cooling media to metal enclosures or hollow rigid frame pipes. Traditional connection structures usually require tightening nuts on both sides of the base pipe, or require sufficient external space to use large wrenches or similar tools to tighten the entire joint.

[0004] However, in many enclosed cavities, server chassis, or narrow structural designs, the skeleton pipes are mostly closed cavities. Operators' hands and standard tools simply cannot enter the pipes for double-sided fixation, and the external assembly space is also severely limited. Therefore, how to achieve highly reliable pipe connections and locking within a single-sided confined space has become a key issue restricting pipe assembly efficiency.

[0005] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this invention. Summary of the Invention

[0006] The purpose of this invention is to provide a pipe connection clamping device that can achieve rapid assembly and stable clamping of pipes in narrow and confined spaces through a single-sided blind riveting fixing method and an integrated mechanical locking linkage structure.

[0007] To achieve the above objectives, the present invention discloses a pipe connection clamping device for fixing a connecting pipe to the mounting hole of a parent pipe, wherein the pipe connection clamping device comprises: A riveting component is provided with a through central hole through which the connecting pipe passes; one axial end of the riveting component has a rivet section capable of radial expansion deformation, the rivet section being adapted to pass through the mounting hole of the parent pipe and be fixed to the parent pipe by rivet; the other axial end of the riveting component is provided with an external thread section, and the side of the riveting component opposite to the rivet section is provided with a countersunk hole communicating with the central hole; An elastic washer is housed within the countersunk hole, and the elastic washer has a through hole through which the connecting pipe passes. The nut has an internal thread and a clamping hole that communicates with the center hole. The nut engages with the external thread section of the rivet through the internal thread. The inner wall of the clamping hole is used to compress the elastic washer.

[0008] As a further description of the above technical solution, when the connecting tube passes through the nut and the elastic washer and is inserted into the central hole, and the nut is screwed and tightened with the rivet, the inner wall of the clamping hole abuts against and radially squeezes the elastic washer, causing the elastic washer to contract inward to clamp and fix the connecting tube.

[0009] As a further description of the above technical solution, the inner wall of the clamping hole has an inner conical surface with an inner diameter that gradually decreases in the direction close to the riveting member, and the inner conical surface is used to press the top of the elastic washer.

[0010] As a further description of the above technical solution, the outer periphery of the elastic washer is provided with a plurality of elastic flap structures that extend axially and can contract radially inward.

[0011] As a further description of the above technical solution, a plurality of the elastic flap structures are evenly spaced along the circumference of the elastic washer, and an axial slit is provided between two adjacent elastic flap structures so that the elastic flap structure is petal-shaped.

[0012] As a further description of the above technical solution, the pipeline connection clamping device also includes a sealing column, which is disposed in the countersunk hole and sleeved on the connecting pipe. The bottom of the sealing column is provided with a sealing flange that abuts against the bottom wall of the countersunk hole, and the elastic gasket is sleeved on the outside of the sealing column.

[0013] As a further description of the above technical solution, it also includes a flange portion, which is disposed between the riveted section and the external threaded section, and the flange portion is used to abut against the top wall of the parent pipe.

[0014] As a further description of the above technical solution, a sealing groove is formed at the bottom of the flange, and a sealing ring is provided in the sealing groove. The sealing ring is used to abut against the top wall of the parent pipeline.

[0015] As a further description of the above technical solution, the inner wall of the riveting section has riveting threads for cooperating with the riveting mechanism.

[0016] As a further description of the above technical solution, the riveting section is configured as a deformable riveting ring.

[0017] As a further description of the above technical solution, the main pipe is a square pipe, and the connecting pipe is a liquid-cooled flexible hose.

[0018] By employing the above technical solutions, the beneficial effects of the present invention are as follows: The pipe connection clamping device of the present invention can achieve rapid assembly and stable clamping of pipes in narrow and confined spaces through a single-sided blind-fit riveting fixing method and an integrated mechanical locking linkage structure. Specifically, the present invention achieves single-sided blind-fitting by introducing a riveting feature, eliminating the dependence on double-sided operating space; and eliminates the traditional hexagonal tightening part, simplifying the processing and manufacturing process of parts and reducing production costs. At the same time, by utilizing the mechanical transmission between the nut, elastic washer and riveting parts, the technical effect of simultaneously and uniformly clamping the connecting pipe circumferentially by tightening the nut is achieved. The locking and sealing effect is stable and reliable, and modular pre-assembly is supported, significantly improving the pipe connection assembly efficiency of industrial production lines.

[0019] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a pipe connection clamping device provided in the embodiments of this specification before installation; Figure 2 This is a schematic diagram of the pipe connection clamping device after installation, as provided in the embodiments of this specification. Figure 3 This is a perspective view of a pipe connection clamping device provided in the embodiments of this specification; Figure 4 This is a schematic diagram of an elastic washer for a pipe connection clamping device provided in the embodiments of this specification; Figure 5 This is a schematic diagram of a riveting ring for a pipe connection clamping device provided in the embodiments of this specification; Figure 6 This is a schematic diagram of the sealing column of a pipe connection clamping device provided in the embodiments of this specification; In the picture: 100. Connecting pipe; 200. Main pipe; 201. Mounting hole; 1. Riveted parts; 11. Center hole; 12. Riveting section; 13. External thread section; 14. Countersunk hole; 15. Flange; 16. Sealing groove; 17. Sealing ring; 18. Riveting thread; 19. Riveting ring; 2. Elastic washer; 21. Elastic flap; 3. Nut; 31. Internal thread; 32. Clamping hole; 33. Internal conical surface; 4. Sealing column; 41. Sealing ring. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0023] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. Furthermore, the accompanying drawings of the present invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0024] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0025] Please see Figure 1-4 This embodiment provides a pipe connection clamping device for fixing a connecting pipe 100 onto the mounting hole 201 of a parent pipe 200. The pipe connection clamping device includes: The riveting component 1 has a through central hole 11 through which the connecting pipe 100 passes; one axial end of the riveting component 1 has a rivet section 12 that can produce radial expansion deformation, the rivet section 12 is adapted to pass through the mounting hole 201 of the parent pipe 200 and be fixed to the parent pipe 200 by rivet; the other axial end of the riveting component 1 has an external thread section 13, and the side of the riveting component 1 opposite to the rivet section 12 is provided with a countersunk hole 14 communicating with the central hole 11; An elastic washer 2 is housed within the countersunk hole 14, and the elastic washer 2 is provided with a through hole through which the connecting pipe 100 passes. Nut 3, the nut 3 is provided with internal thread 31, the nut 3 is provided with clamping hole 32 communicating with the center hole 11, the nut 3 is engaged with the external thread section 13 of the rivet 1 through the internal thread 31, and the inner wall of the clamping hole 32 is used to compress the elastic washer 2.

[0026] Specifically, in the above structure, the connecting tube 100 passes through the nut 3 and the elastic washer 2 in sequence and is finally inserted into the central hole 11. When the nut 3 is screwed into the riveting member 1, the inner wall of the clamping hole 32 abuts against and radially compresses the elastic washer 2, causing the elastic washer 2 to radially contract inward toward the central axis, thereby achieving circumferential clamping and fixing of the connecting tube 100.

[0027] Based on the above-described process of the present invention, during installation, firstly, the sealing ring 17 is fitted into the sealing groove 16 at the bottom of the riveting component 1, and the entire riveting component 1 with the sealing ring 17 is placed into the mounting hole 201 of the parent pipe 200. Then, using an external tool such as a rivet gun, the rivet is screwed into the rivet thread 18 on the inner wall of the rivet section 12, and the rivet gun is activated to pull it in one direction, causing the rivet section 12 to undergo radial expansion deformation inside the parent pipe 200, thereby firmly locking the riveting component 1 onto the inner wall surface of the parent pipe 200. Next, the elastic washer 2 is placed in the countersunk hole 14 at the top of the riveting component 1, and the connecting pipe 100 is inserted to a predetermined depth along the through hole and center hole 11 of the elastic washer 2. Finally, the nut 3 is fitted onto the outside of the connecting pipe 100 and screwed into the external thread section 13 for tightening. When the nut 3 moves axially downward along the external thread section 13, the clamping hole 32 and its inner conical surface 33 inside the nut 3 compress the top of the elastic washer 2. The petal-shaped elastic flap structure 21 of the elastic washer 2 is compressed by the conical surface and deforms radially inward, thus firmly holding the internal connecting tube 100. When it is necessary to maintain or disassemble the connecting tube 100, simply loosen the nut 3 in the opposite direction, the elastic flap structure 21 will elastically recover, and the connecting tube 100 can be pulled out directly.

[0028] Of course, the step of fitting the nut 3 onto the outside of the connecting tube 100 can be performed before the step of inserting the connecting tube 100 into the pre-set depth along the through hole and center hole 11 of the elastic washer 2, as needed. This can be done according to actual requirements.

[0029] Furthermore, this process also supports integrated rapid assembly. Specifically, the sealing ring 17, riveting component 1, elastic washer 2, and nut 3 are pre-assembled into a single integral connector assembly on the production line. Then, the lower riveting section 12 of this connector assembly is inserted into the mounting hole 201 of the main pipe 200 and riveted in place. After the connector is fixed, the on-site operator only needs to insert the connecting pipe 100 and finally tighten the nut 3 to complete the mechanical locking assembly of the entire fluid pipeline.

[0030] In other words, in the solution of this invention, the rapid assembly and stable clamping of pipelines can be achieved in narrow and confined spaces through a single-sided blind-fitting riveting fixing method and an integrated mechanical locking linkage structure. Specifically, in this invention, the introduction of the riveting feature achieves single-sided blind-fitting, eliminating the dependence on double-sided operating space; and, by eliminating the traditional hexagonal tightening part, the processing and manufacturing process of the parts is simplified and the production and manufacturing costs are reduced. At the same time, by utilizing the mechanical transmission between the nut 3, the elastic washer 2 and the riveting part 1, the technical effect of simultaneously and uniformly clamping the connecting pipe 100 circumferentially by tightening the nut 3 is achieved. The locking and sealing effect is stable and reliable, and modular pre-assembly is supported, significantly improving the pipeline connection and assembly efficiency of industrial production lines.

[0031] Based on the above scheme, the inner wall of the clamping hole 32 has an inner conical surface 33 whose inner diameter gradually decreases along the direction close to the rivet 1. The inner conical surface 33 is used to compress the top of the elastic washer 2, and the axial thrust when the nut 3 is tightened is converted into a radial clamping force pointing towards the center of the pipeline by axial movement.

[0032] Furthermore, the outer periphery of the elastic washer 2 is provided with a plurality of elastic petal structures 21 that extend axially and are capable of contracting inward. When subjected to the downward pressure and compression of the inner conical surface 33, the elastic petal structures 21 can flexibly generate radially inward elastic deformation to adhere tightly to the pipe wall. The plurality of elastic petal structures 21 are evenly spaced along the circumference of the elastic washer 2, and an axial slit is machined between two adjacent elastic petal structures 21, so that the elastic petal structures 21 as a whole present a petal-shaped structure. This design can ensure that each elastic petal structure 21 is subjected to uniform force and consistent deformation when compressed.

[0033] To achieve a better sealing effect, this embodiment also provides a sealing column 4 structure, as shown in Figure 6. The pipe connection clamping device further includes a sealing column 4, which is disposed within the countersunk hole 14 and sleeved on the connecting pipe 100. The bottom of the sealing column 4 has a sealing flange that abuts against the bottom wall of the countersunk hole 14, and the elastic gasket 2 is sleeved outside the sealing column 4. In practical use, when the elastic flap structure 21 radially contracts, clamping the pipe wall, its bottom, under the tightening force, can press against the sealing ring 41 at the bottom of the sealing column 4, which covers the outer wall, achieving a better sealing effect.

[0034] Furthermore, the pipeline connection clamping device also includes a flange portion 15. The flange portion 15 is disposed between the riveting section 12 and the external thread section 13. The flange portion 15 is used to abut against the outside of the top wall of the parent pipeline 200, thereby clamping and fixing the periphery wall of the parent pipeline 200 together with the expanded portion of the riveting section 12 in the riveting state.

[0035] Furthermore, the bottom of the flange 15 is recessed inward on the side facing the parent pipe 200 to form a sealing groove 16, and a sealing ring 17 is provided in the sealing groove 16. The sealing ring 17 is used to press and abut against the top wall of the parent pipe 200, thereby preventing the fluid inside the pipe from leaking outward from the mounting hole 201.

[0036] In actual riveting, the inner wall of the riveting section 12 has riveting threads 18 for cooperating with riveting mechanisms such as rivet guns. During the installation phase, the screw of the external riveting mechanism can be screwed into the riveting threads 18 and apply axial tension to force the thinner section of the riveting section 12 to expand outwards. In another embodiment, please refer to... Figure 5 , 6 It uses a rivet ring 19 instead of the aforementioned rivet thread 18. In actual installation, an external rivet tool can be used to make the rivet ring 19 turn outward and stick to the inner wall of the pipe after entering the same position, so as to achieve riveting and fixing.

[0037] In this embodiment, the main pipe 200 is in the form of a metal square tube, and the connecting pipe 100 is in the form of a liquid-cooled flexible hose. This combination is suitable for rapid connection of fluid circuits in high power density heat dissipation environments.

[0038] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention specification and drawings are included in the scope of the patent application of the present invention.

[0039] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0040] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A pipe connection clamping device for fixing a connecting pipe to an installation hole in a parent pipe, characterized in that, The pipeline connection clamping device includes: A riveting component is provided with a through central hole through which the connecting pipe passes; one axial end of the riveting component has a rivet section capable of radial expansion deformation, the rivet section being adapted to pass through the mounting hole of the parent pipe and be fixed to the parent pipe by rivet; the other axial end of the riveting component is provided with an external thread section, and the side of the riveting component opposite to the rivet section is provided with a countersunk hole communicating with the central hole; An elastic washer is housed within the countersunk hole, and the elastic washer has a through hole through which the connecting pipe passes. The nut has an internal thread and a clamping hole that communicates with the center hole. The nut engages with the external thread section of the rivet through the internal thread. The inner wall of the clamping hole is used to compress the elastic washer.

2. The pipe connection clamping device according to claim 1, characterized in that: When the connecting tube passes through the nut and the elastic washer and is inserted into the central hole, and the nut is screwed into the rivet, the inner wall of the clamping hole abuts against and radially compresses the elastic washer, causing the elastic washer to contract inward to clamp and fix the connecting tube.

3. The pipe connection clamping device according to claim 1, characterized in that: The inner wall of the clamping hole has an inner conical surface whose inner diameter gradually decreases in the direction close to the rivet, and the inner conical surface is used to press the top of the elastic washer.

4. The pipe connection clamping device according to claim 1, characterized in that: The outer periphery of the elastic washer is provided with several elastic flap structures that extend axially and can contract radially inward.

5. The pipe connection clamping device according to claim 4, characterized in that: A plurality of the elastic flap structures are evenly spaced along the circumference of the elastic washer, and an axial slit is provided between two adjacent elastic flap structures so that the elastic flap structure is petal-shaped.

6. The pipe connection clamping device according to claim 4, characterized in that: The pipe connection clamping device also includes a sealing column, which is disposed inside the countersunk hole and sleeved on the connecting pipe. The bottom of the sealing column is provided with a sealing flange that abuts against the bottom wall of the countersunk hole, and the elastic gasket is sleeved on the outside of the sealing column.

7. The pipe connection clamping device according to claim 1, characterized in that: It also includes a flange portion, which is disposed between the riveted section and the external threaded section, and the flange portion is used to abut against the top wall of the parent pipe.

8. The pipe connection clamping device according to claim 7, characterized in that: A sealing groove is formed at the bottom of the flange, and a sealing ring is provided in the sealing groove. The sealing ring is used to abut against the top wall of the parent pipe.

9. The pipe connection clamping device according to claim 1, characterized in that: The inner wall of the riveting section has riveting threads for cooperating with the riveting mechanism.

10. The pipe connection clamping device according to claim 1, characterized in that: The rivet section is configured as a deformable rivet ring.

11. The pipe connection clamping device according to claim 1, characterized in that: The main pipe is a square pipe, and the connecting pipe is a liquid-cooled flexible hose.

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