CN218914044U

CN218914044U - Pipe fitting telescopic connection structure

Info

Publication number: CN218914044U
Application number: CN202223169389.1U
Authority: CN
Inventors: 姜春伟; 肖建文
Original assignee: Zhejiang Xiaoen Electronic Technology Co ltd
Current assignee: Zhejiang Xiaoen Electronic Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-25
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a telescopic connecting structure of a pipe fitting, which comprises a main pipe, a movable pipe, a main pipe nut, a pressing sleeve and a lining ring, wherein one end of the movable pipe is inserted into the main pipe and is in telescopic and movable connection with the main pipe, the main pipe nut is arranged at the end part of the main pipe and is in threaded connection with the main pipe, the pressing sleeve and the lining ring are arranged in the main pipe nut and are sleeved on the movable pipe, two sides of the lining ring are respectively propped against the pressing sleeve and the main pipe nut, and when the main pipe nut is screwed, the pressing sleeve is pressed into the lining ring to tightly press the movable pipe. According to the utility model, the main pipe nut with the shrinkage opening is arranged at the joint, the lining ring on the inner side is moved by screwing the main pipe nut, and the lining ring is in contact with the pressing sleeve in the moving process to lock the movable pipe under the pressing sleeve, so that the main pipe nut is prevented from being in direct contact with the movable pipe.

Description

Pipe fitting telescopic connection structure

Technical Field

The utility model relates to the technical field of telescopic pipes, in particular to a telescopic connecting structure of a pipe fitting.

Background

The telescopic pipe is a common pipe fitting in the market, and can be applied to various fields due to the retractility of the telescopic pipe, and the connecting structure of the telescopic pipe can be used for controlling the telescopic length of the telescopic pipe. The existing structure is that one end of a connecting piece with taper threads is in interference connection with a large pipe, a small pipe passes through the middle of the connecting piece, a nut with taper threads is arranged on the outer side of the connecting piece, the small pipe can stretch out and draw back in the large pipe when the nut is loosened, the structure can cause the contact scraping of the outer wall of the small pipe and the inner wall of the large pipe when in use, and the inner wall of the connecting piece is in contact with the abrasion of the outer wall of the small pipe.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model aims to provide a telescopic connecting structure of a pipe fitting, which can prevent a movable pipe from being scratched.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a pipe fitting telescopic connection structure, its includes is responsible for, movable tube, is responsible for the nut, presses cover and lining circle, movable tube one end insert be responsible for in with be responsible for telescopic movable connection, be responsible for the nut and install the tip of being responsible for and with be responsible for threaded connection, press cover and lining circle locate and be responsible for in the nut and all overlap and establish on the movable tube, the both sides of lining circle offset with pressing the cover respectively with being responsible for the nut, when being responsible for the nut and screwing, press the cover to be pressed into in the lining circle with movable tube compress tightly.

Preferably, the main pipe nut comprises a threaded part and a shrinkage part, wherein an internal thread is arranged on the inner side of the threaded part, an external thread is arranged on the end part of the main pipe, the internal thread is matched with the external thread, the inner diameter of the shrinkage part is smaller than that of the threaded part, and a compression groove is formed between the internal thread on the inner side of the threaded part and the shrinkage part.

Preferably, the pressing sleeve comprises a flat part and a pressing part, wherein the flat part is positioned between the main pipe and the movable pipe, the pressing part is positioned between the main pipe nut and the movable pipe, one end of the pressing part is propped against the main pipe, and the other end of the pressing part is provided with a horn mouth.

Preferably, the lining ring is positioned in the compression groove, one end of the lining ring is propped against the side wall of the shrinkage part, the other end of the lining ring is propped against the horn mouth of the compression part, the propped part of the lining ring and the shrinkage part is in a right-angle structure, and the propped part of the lining ring and the horn mouth is provided with a chamfer angle of 30-60 degrees.

Preferably, the end part of the movable pipe is connected with the pipe plug through interference, the tail part of the pipe plug is provided with an elastic piece, the outer diameter of the elastic piece is larger than the outer diameter of the movable pipe and smaller than the inner diameter of the main pipe, and the elastic piece is attached to the inner diameter of the main pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the utility model, the main pipe nut with the shrinkage opening is arranged at the joint, the lining ring on the inner side is moved by screwing the main pipe nut, and the lining ring is in contact with the pressing sleeve in the moving process to lock the movable pipe under the pressing sleeve, so that the main pipe nut is prevented from being in direct contact with the movable pipe.

2. The pipe plug and the lining ring are matched to support the movable pipe, so that the movable pipe is not contacted with the main pipe and other parts, the movable pipe can be better ensured not to be scratched, and the plating layer on the surface of the movable pipe can be well protected.

3. The utility model has simple integral structure, can complete the assembly of the whole structure by a single person without other auxiliary tools during the assembly, has simple and convenient assembly process, and has reliable and durable structure after the assembly is completed.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the main pipe nut of the present utility model;

fig. 3 is a schematic view of the structure of the pressure jacket of the present utility model.

In the figure: 1. a main pipe; 2. a movable tube; 3. a main pipe nut; 4. pressing the sleeve; 5. a collar; 6. a pipe plug; 7. an elastic member; 11. an external thread; 31. a threaded portion; 32. a pinch portion; 33. a compaction groove; 34. an internal thread; 41. a flat portion; 42. a pressing part; 43. a horn mouth.

Detailed Description

The technical solutions of the present embodiments will be clearly and completely described below with reference to the drawings in the present embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments herein, which would be within the purview of one of ordinary skill in the art without the creative effort, are contemplated as falling within the scope of the present utility model.

As shown in fig. 1 to 3, the present embodiment relates to a telescopic connection structure for a pipe, which comprises a main pipe 1, a movable pipe 2, a main pipe nut 3, a pressing sleeve 4 and a lining ring 5, wherein the inner diameter of the movable pipe 2 is smaller than that of the main pipe 1, one end of the movable pipe 2 can be inserted into the main pipe 1 to realize telescopic movable connection with the main pipe 1, the main pipe nut 3 is installed at the end part of the main pipe 1 and is in threaded connection with the main pipe 1, the pressing sleeve 4 and the lining ring 5 are arranged in the main pipe nut 3 and are sleeved on the movable pipe 2, two sides of the lining ring 5 respectively abut against the pressing sleeve 4 and the main pipe nut 3, and when the main pipe nut 3 is screwed, the pressing sleeve 4 is pressed into the lining ring 5 to compress the movable pipe 2.

In the embodiment of the application, the main pipe nut 3 includes the screw thread portion 31 and the throat portion 32, the inboard of screw thread portion 31 is equipped with internal thread 34, is equipped with external screw thread 11 in the main pipe 1 tip, internal thread 34 and external screw thread 11 cooperation, the internal diameter of throat portion 32 is less than the screw thread portion 31 internal diameter, be equipped with between the internal thread of screw thread portion 31 inboard and throat portion 32 and compress tightly the groove 33, the lining 5 be located compress tightly the groove 33, pressure sleeve 4 include flat portion 41 and pressure portion 42, flat portion 41 is located between main pipe 1 and movable pipe 2, pressure portion 42 is located between main pipe nut 3 and movable pipe 2, the thickness of pressure portion 42 is greater than flat portion 41, so can make the one end of pressure portion 42 offset with the lateral wall of main pipe 1, the pressure portion 42 other end sets up horn mouth 43, adopts horn mouth 43 in order to let pressure sleeve 4 enter into pressure sleeve 4 more smoothly.

One end of the lining ring 5 is propped against the inner side wall of the necking part 32, the other end is propped against the horn mouth 43 of the pressing part 42, the propped part of the lining ring 5 against the necking part 32 is in a right-angle structure, and the propped part of the lining ring 5 against the horn mouth 43 is provided with a chamfer angle which is 45 degrees.

In this embodiment, the end of the movable tube 2 extending into the main tube 1 is connected with the tube plug 6 by interference, the tail of the tube plug 6 is provided with the elastic element 7, the outer diameter of the elastic element 7 is larger than the outer diameter of the movable tube 2 and smaller than the inner diameter of the main tube 1, the elastic element 7 is attached to the inner diameter of the main tube 1, the end of the movable tube 2 can be supported by the elastic element 7, the outer wall of the movable tube 2 is prevented from being in direct contact with the inner wall of the main tube 1, and therefore, the scraping of the tube wall in the telescopic process of the movable tube can be prevented.

In this embodiment, the lining ring 5, the pressing sleeve 4 and the pipe plug 6 may be injection molded by using PA6, ABS, PP, PVC, PPR, PE and other materials through a mold, so that the production cost is low and reliable, the main pipe 1 and the movable pipe 2 are conventional metal pipes, the main pipe nut 3 may be injection molded by using aluminum alloy, zinc alloy and castings, and also may be injection molded by using reinforced PA6, ABS, PP, PVC, PPR, PE.

The working principle of the utility model is as follows:

the device is mainly characterized in that the main pipe 1 and the main pipe nut 3 are in threaded connection, when the main pipe 1 is fixed, the main pipe nut 3 rotates clockwise, the main pipe nut 3 moves leftwards, the lining ring 5 is influenced by the main pipe nut 4 and simultaneously moves leftwards, when the main pipe nut 4 continues to rotate clockwise, the chamfering part of the lining ring 5 continues to move leftwards and is pressed into the horn mouth 43 of the pressing sleeve 4, the shape of the lining ring 5 is influenced by the horn mouth 43 and can be contracted, when the lining ring 5 is contracted to a certain extent, the inner wall of the lining ring 5 is contacted with the movable pipe 3, and when the main pipe nut 4 continues to rotate clockwise, the lining ring 5 can press the movable pipe 3, so that the purpose of fixing the movable pipe 3 is achieved.

When the main pipe nut 4 rotates anticlockwise to remove the limit on the lining ring 5, the lining ring 5 can recover the original state due to the material property of the main pipe nut and slide out of the horn mouth 43 of the pressing sleeve 4, and the pressing force on the movable pipe 3 is removed, so that the movable purpose of the movable pipe 3 is achieved.

It will be evident to those skilled in the art that the present utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or scope of the utility model. Accordingly, the present embodiments are exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a pipe fitting telescopic connection structure, its characterized in that, it includes is responsible for, movable tube, is responsible for the nut, presses cover and lining circle, movable tube one end insert be responsible for in with be responsible for flexible swing joint, be responsible for the nut and install the tip of being responsible for and with be responsible for threaded connection, press cover and lining circle locate and be responsible for in the nut and all overlap and establish on the movable tube, the both sides of lining circle offset with pressing cover and being responsible for the nut respectively, when being responsible for the nut and screwing, press the cover to be pressed into in the lining circle with movable tube compress tightly.

2. The telescopic connecting structure of a pipe fitting according to claim 1, wherein the main pipe nut comprises a threaded portion and a reduced mouth portion, an internal thread is arranged on the inner side of the threaded portion, an external thread is arranged on the end portion of the main pipe, the internal thread is matched with the external thread, the inner diameter of the reduced mouth portion is smaller than the inner diameter of the threaded portion, and a compression groove is formed between the internal thread on the inner side of the threaded portion and the reduced mouth portion.

3. The telescopic connecting structure of claim 2, wherein the pressing sleeve comprises a flat part and a pressing part, the flat part is positioned between the main pipe and the movable pipe, the pressing part is positioned between the main pipe nut and the movable pipe, one end of the pressing part is propped against the main pipe, and the other end of the pressing part is provided with a bell mouth.

4. A telescopic pipe fitting connecting structure according to claim 3, wherein the lining ring is located in the compressing groove, one end of the lining ring is propped against the side wall of the shrinking opening, the other end of the lining ring is propped against the horn mouth of the compressing opening, the part of the lining ring propped against the shrinking opening is in a right-angle structure, a chamfer angle is arranged at the part of the lining ring propped against the horn mouth, and the chamfer angle is 30-60 °.

5. The telescopic connecting structure of claim 1, wherein the movable pipe end is connected with the pipe plug by interference, an elastic piece is arranged at the tail of the pipe plug, the outer diameter of the elastic piece is larger than the outer diameter of the movable pipe and smaller than the inner diameter of the main pipe, and the elastic piece is attached to the inner diameter of the main pipe.