Threaded sleeve

Abstract

The utility model discloses a threaded sleeve which comprises a sleeve body and is characterized in that the sleeve body comprises a front sleeve section and a rear sleeve section which are distributed in a step mode, the outer diameter of the front sleeve section is smaller than that of the rear sleeve section, a circle of axial stripes are arranged on the outer circle of the front sleeve section, and threads are arranged on the inner circle of the front sleeve section. The rear end of the pipe rear section is provided with a connecting pipe formed by axial extension, the outer diameter of the connecting pipe is smaller than that of the pipe front section, the rear end of the pipe rear section is further provided with a circle of radial extension edge, and the front end face of the radial extension edge is provided with an annular groove. The connecting structure is reasonable in structure, stable in connection and convenient to install and position.

Description

Technical Field

[0001] The utility model relates to an improved invention of a sleeve, in particular to an improved invention of a threaded sleeve. Background Art

[0002] A threaded sleeve is a connector with a threaded inner cavity for connecting with bolts, externally threaded pipes, etc., thereby fixing the two components together and playing the role of docking or conduction. However, the threaded sleeve itself lacks a fixed structure with the installation component, that is, after the threaded sleeve is installed and positioned, it is used for docking or conduction of the two components. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a threaded sleeve with a positioning structure.

[0004] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions: the threaded sleeve includes a tube body, which is characterized in that the tube body includes a tube front section and a tube rear section distributed in a step manner, and the outer diameter of the tube front section is smaller than the outer diameter of the tube rear section, a circle of axial stripes is provided on the outer circle of the tube front section, a thread is provided on the inner circle of the tube front section, and the rear end of the tube rear section is provided with an axially extended connecting pipe, the outer diameter of the connecting pipe is smaller than the outer diameter of the tube front section, the rear end of the tube rear section is also provided with a circle of radial extension, and the front end surface of the radial extension is provided with an annular groove.

[0005] The annular groove extends to the rear section of the tube, and the outer circle of the corresponding rear section of the tube constitutes the inner groove wall of the annular groove. There is an R angle transition between the outer circle of the rear section of the tube and the lower end face of the radial extension.

[0006] The front end outer circle of the front section of the tube is provided with a chamfer.

[0007] The tube body is formed in one piece by cold forging and is subjected to carburizing heat treatment.

[0008] The tube body is made of SAE1022.

[0009] The beneficial effects of the utility model are that the improved threaded sleeve has a reasonable structure, a stable connection, is convenient for tight installation in the step hole of the installation component, and is used for connecting the conductive external threaded pipe and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] Figure 2 It is a structural sectional view of the present utility model. DETAILED DESCRIPTION

[0013] The accompanying drawings show the structure of the present invention, and the following further describes its relevant details in conjunction with the accompanying drawings. Figure 1-2 The threaded sleeve includes a tube body, which includes a front section 1 and a rear section 2 distributed in steps, and the outer diameter of the front section 1 is smaller than the outer diameter of the rear section 2. A circle of axial stripes 3 is provided on the outer circle of the front section 1, and a thread 4 is provided on the inner circle of the front section 1. The rear end of the rear section 2 is provided with an axially extended connecting pipe 5, and the outer diameter of the connecting pipe 5 is smaller than the outer diameter of the front section 1. The rear end of the rear section 2 is also provided with a circle of radial extension 8, and the front end surface of the radial extension 8 is provided with an annular groove 6.

[0014] When the utility model is used, the threaded sleeve is pressed into the stepped hole of the mounting component, the axial stripes 3 of the corresponding front section of the pipe 1 are tightly fitted in the stepped hole, the end face of the stepped hole is squeezed by the radial extension 8, and partially pressed into the annular groove 6 to form a seal, the corresponding front section of the pipe 1 is used to connect with the external threaded pipe 4, and the connecting pipe 5 is used to dock the matching pipe and is locked with a clamp.

[0015] As a further improved specific implementation, the annular groove 6 extends to the rear section 2 of the tube, and the outer circle of the corresponding rear section 2 constitutes the inner groove wall of the annular groove 6, and an R angle transition is formed between the outer circle of the rear section 2 of the tube and the lower end face of the radial extension.

[0016] As a further improved specific implementation method, the front end outer circle of the front tube section 1 is provided with a chamfer 7 to reduce stress concentration.

[0017] As a further improved specific implementation method, the tube body is formed in one piece by cold heading and is subjected to carburizing heat treatment to enhance structural strength, surface hardness and wear resistance.

[0018] As a further improved specific implementation method, the tube body is made of SAE1022, which is high-quality carbon structural steel.

[0019] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A threaded casing, comprising a tube body, characterized in that: The tube body includes a front section and a rear section distributed in a stepped manner, and the outer diameter of the front section is smaller than the outer diameter of the rear section. A circle of axial stripes is provided on the outer circle of the front section, and a thread is provided on the inner circle of the front section. The rear end of the rear section is provided with an axially extended connecting pipe, and the outer diameter of the connecting pipe is smaller than the outer diameter of the front section. The rear end of the rear section is also provided with a circle of radial extension, and an annular groove is provided on the front end surface of the radial extension.

2. The threaded sleeve according to claim 1, wherein: The annular groove extends to the rear section of the tube, and the outer circle of the corresponding rear section of the tube constitutes the inner groove wall of the annular groove. There is an R angle transition between the outer circle of the rear section of the tube and the lower end face of the radial extension.

3. The threaded sleeve according to claim 1, wherein: The front end outer circle of the front section of the tube is provided with a chamfer.

4. The threaded sleeve according to claim 1, wherein: The tube body is formed in one piece by cold forging and is subjected to carburizing heat treatment.

5. The threaded sleeve according to claim 1, wherein: The tube body is made of SAE1022.

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