Reinforced crimping metal pipe fitting and connecting structure
By setting a mechanical interlocking structure of sealing ring groove and open snap ring at the connection part of metal pipe fittings, the problems of poor sealing performance and easy detachment of traditional press-fit connections are solved, and a high-strength and stable pipe connection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional press-fit connections have poor sealing performance, and fittings and pipes are prone to detachment, resulting in unreliable connections.
A sealing ring groove and a limiting step are provided at the first connection part of the metal pipe fitting, and an open snap ring is provided at the second connection part to form a mechanical interlock structure with the ring groove of the pipe, so as to realize the axial fixation of the pipe and prevent rotation.
It improves the tensile strength and vibration resistance of pipe connections, ensures sealing and stability, avoids the risk of leakage due to vibration or creep, and extends the service life of pipe connections.
Smart Images
Figure CN224017942U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of pipe fittings, and particularly relates to a reinforced crimping metal pipe fitting and a connecting structure. BACKGROUND
[0002] Pipe fittings are key components for connection, control, direction change, flow distribution, sealing and support in a pipeline system, which ensure fluid (liquid, gas) to flow along the designed path and guarantee the sealing and stability of the system by changing the pipeline direction, pipe diameter or adding branches. The clamping and pressing type connecting pipe fitting is a commonly used pipeline connecting technology, and its core structure comprises a socket pipe fitting with a special sealing ring and a special clamping and pressing tool. During connection, the pipe material is inserted into the socket of the pipe fitting, and the end of the pipe fitting is radially compressed by the clamping and pressing tool to make the pipe fitting and the pipe material tightly fit. The traditional clamping and pressing type connecting method forms a seal between the pipe fitting and the pipe material by compressing the sealing ring, and the sealing performance is poor. Moreover, the end of the pipe fitting is deformed into a hexagon or a circle after clamping and pressing, and the pipe fitting and the pipe material are physically fixed by interlocking through the deformed part, so the connection is not reliable and is prone to falling off. SUMMARY
[0003] The utility model aims at providing a reinforced crimping metal pipe fitting and a connecting structure to solve the problems of poor sealing performance and easy falling off of the pipe fitting and the pipe material in the traditional clamping and pressing type connection.
[0004] To solve the above technical problems, the utility model provides the following technical scheme:
[0005] A reinforced crimping metal pipe fitting, comprising a pipe fitting body for connecting with a pipe material, at least one end of the pipe fitting body is sequentially provided with a first connecting part and a second connecting part, at least one sealing ring groove is arranged on the first connecting part, a sealing ring is arranged in the sealing ring groove, a clamping piece is arranged on the second connecting part, and the clamping piece is used for increasing the connection reliability of the pipe fitting body and the pipe material.
[0006] Further, the clamping piece is an open spring, an annular groove is arranged on the second connecting part, and the open spring is installed in the annular groove. The open spring is used for clamping on the outer wall of the pipe material.
[0007] Further, a limiting step is arranged on the inner wall of the first connecting part, and the limiting step is used for limiting the end of the pipe material.
[0008] A reinforced crimping metal pipe fitting connecting structure, comprising the pipe material and the above metal pipe fitting, the pipe material is inserted into the inside of the metal pipe fitting, the end of the pipe material abuts against the limiting step, the outer wall of the pipe material compresses the sealing ring in the sealing ring groove, and the sealing ring seals the sealing ring groove; an annular groove is arranged on the outer wall of the pipe material, and the clamping piece on the second connecting part is clamped in the annular groove.
[0009] Compared with the prior art, the present invention has the following beneficial technical effects:
[0010] This utility model's metal pipe fitting connection structure achieves basic sealing by retaining a sealing ring groove at the first connection part, while simultaneously incorporating an open-ring spring-ring groove mechanical interlocking structure at the second connection part. The open-ring spring precisely engages with the ring groove of the pipe, forming a bidirectional mechanical constraint that effectively prevents axial movement and rotation of the pipe. This interlocking structure effectively improves the tensile strength of the pipe connection and has good vibration resistance, ensuring stable sealing even under vibration. The sealing ring at the first connection part independently performs the sealing function, while the open-ring spring only provides mechanical fixation and does not participate in the sealing surface. This avoids the risk of leakage at the metal contact surface due to vibration or creep, significantly improving the sealing life and stability of the pipe connection. Attached Figure Description
[0011] Figure 1 This is a structural schematic diagram of a metal pipe fitting;
[0012] Figure 2 This is a structural diagram of the pipe.
[0013] Figure 3 This is a partial sectional view of the metal pipe fitting connection structure;
[0014] In the figure: pipe body 1, first connecting part 2, sealing ring 21, limiting step 22, second connecting part 3, open snap ring 31, pipe 4, annular groove 41. Detailed Implementation
[0015] The following detailed description illustrates the specific implementation method:
[0016] Example
[0017] like Figure 1 As shown, a reinforced crimped metal pipe fitting includes a pipe fitting body 1 for connecting to a pipe 4. The pipe fitting body 1 can be a straight pipe, a bent pipe, a tee pipe, or other pipe fittings of any shape. In this embodiment, a bent pipe is used. A first connecting part 2 and a second connecting part 3 are formed at both ends of the pipe fitting body 1. A sealing ring groove is formed on the inner wall of the first connecting part 2, and a sealing ring 21 is provided in the sealing ring groove. A limiting step 22 is also formed on the inner wall of the first connecting part 2, which is used to limit the end of the pipe 4. An annular groove is formed on the inner wall of the second connecting part 3, and an open snap spring 31 is installed in the annular groove. The open snap spring 31 is used to snap onto the outer wall of the pipe 4 to increase the reliability of the connection between the pipe fitting body 1 and the pipe 4.
[0018] like Figures 2-3As shown, a reinforced crimping metal pipe fitting connection structure, comprising the above metal pipe fitting and pipe material 4, the pipe material 4 is inserted into the inside of the metal pipe fitting, the end of the pipe material 4 abuts against the limiting step 22, the outer wall of the pipe material 4 compresses the sealing ring 21 in the sealing ring groove, and the sealing ring 21 seals the sealing ring groove; the outer wall of the pipe material 4 is provided with a ring groove 41, and the opening snap spring 31 on the second connecting part 3 is clamped in the ring groove 41.
[0019] By retaining the sealing ring groove in the first connecting part 2, the basic sealing is realized, and the opening snap spring 31-ring groove 41 mechanical interlocking structure is arranged on the second connecting part 3, the opening snap spring 31 is precisely engaged with the ring groove 41 of the pipe material 4, mechanical positive and negative bidirectional constraints are formed, axial movement and rotation of the pipe material 4 are effectively prevented, the interlocking structure can effectively improve the pullout strength of the pipeline connection, has good anti-vibration effect, and makes the pipeline connection still be able to maintain stable sealing in a vibration environment; the sealing ring 21 of the first connecting part 2 independently undertakes the sealing function, the opening snap spring 31 only realizes mechanical fixation and does not participate in the sealing surface, can avoid the leakage risk caused by vibration or creep of the metal contact surface, and significantly improves the sealing life and stability of the pipeline connection.
[0020] The above is only an embodiment of the present application, and common technical solutions and / or characteristics in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, a number of deformations and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.
Claims
1. A reinforced crimped metal pipe fitting, comprising a pipe fitting body (1) for connecting to a pipe (4), wherein at least one end of the pipe fitting body (1) is provided with a first connecting portion (2) and a second connecting portion (3) in sequence, characterized in that: The first connecting part (2) is provided with at least one sealing ring groove, and a sealing ring (21) is provided in the sealing ring groove. The second connecting part (3) is provided with a snap fastener, which is used to increase the connection reliability between the pipe body (1) and the pipe (4). The snap fastener is an open snap spring (31). The second connecting part (3) is provided with an annular groove, and the open snap spring (31) is installed in the annular groove. The open snap spring (31) is used to snap onto the outer wall of the pipe (4).
2. The metal pipe fitting according to claim 1, characterized in that: The inner wall of the first connecting part (2) is provided with a limiting step (22), which is used to limit the end of the pipe (4).
3. A reinforced crimped metal pipe fitting connection structure, characterized in that: The tube (4) and the metal fitting described in any one of claims 1-2 are included. The tube (4) is inserted into the interior of the metal fitting. The end of the tube (4) abuts against the limiting step (22). The outer wall of the tube (4) presses the sealing ring (21) into the sealing ring groove. The sealing ring (21) seals the sealing ring groove. The outer wall of the tube (4) is provided with a ring groove (41). The snap-fit part on the second connecting part (3) snaps into the ring groove (41).