CN210440354U

CN210440354U - Quick connection joint

Info

Publication number: CN210440354U
Application number: CN201920687098.0U
Authority: CN
Inventors: 潘建冬
Original assignee: Suzhou Fulangte Precision Electronic Technology Co Ltd
Current assignee: Suzhou Fulangte Precision Electronic Technology Co Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-05-01
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a quick connecting joint, which comprises a connecting seat and an expansion sleeve, wherein the connecting seat comprises a connecting sleeve, one end of the connecting sleeve is used for inserting a pipe fitting or a rod piece, the other end of the connecting sleeve is fixedly provided with a column body, and the outer peripheral surface of the column body is provided with at least one section of cambered surface with gradually increased radius; the expansion sleeve is an elastic non-closed expansion sleeve which is sleeved on the column body and is used for being inserted into the pipe fitting to be connected; when rotating the connecting seat and the member or the pipe fitting installed on the expansion sleeve in the preset direction, the expansion sleeve is driven to rotate relative to the connecting seat, the expansion sleeve rotates along the cambered surface and is gradually extruded by the cambered surface to expand the expansion sleeve, and then the expansion sleeve extrudes the inner wall of the pipe fitting to be connected, so that the locking between the pipe fitting to be connected and the connecting seat is realized. The utility model discloses a quick connect coupling, simple structure, the preparation is with low costs, can realize the high-speed joint of pipe fitting or member.

Description

Quick connection joint

Technical Field

The utility model relates to a connecting piece technical field, concretely relates to quick connect joint for pipe fitting or member are connected.

Background

The quick connector has the functions of quick plugging, unidirectional sealing and non-return, so that the quick connector is widely applied to connection of fluid system pipelines in the fields of metallurgy, petroleum, mining, engineering machinery, ships and the like. The existing quick connector mainly comprises a pipe joint main body, wherein a thread is generally arranged at one end of the pipe joint main body, and a pipe fitting to be connected is also provided with a thread matched with the thread on the pipe joint main body, so that connection is realized. However, the existing quick coupling generally has the following disadvantages: other connection methods such as threaded connection are mostly adopted for the quick connector, the structure is complex, the manufacturing cost is high, quick connection cannot be realized, and labor is consumed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a quick connect coupling, this attach fitting simple structure, preparation is with low costs, can realize the high-speed joint of pipe fitting or member.

In order to solve the technical problem, the utility model provides a quick connection joint, which comprises a connection seat and an expansion sleeve, wherein the connection seat comprises a connection sleeve, one end of the connection sleeve is used for inserting a pipe fitting or a rod piece, the other end of the connection sleeve is fixedly provided with a column body, and the outer peripheral surface of the column body is provided with at least one section of cambered surface with gradually increased radius; the expansion sleeve is an elastic non-closed expansion sleeve which is sleeved on the column body and is used for being inserted into the pipe fitting to be connected;

when rotating the connecting seat and the member or the pipe fitting installed on the expansion sleeve in the preset direction, the expansion sleeve is driven to rotate relative to the connecting seat, the expansion sleeve rotates along the cambered surface and is gradually extruded by the cambered surface to expand the expansion sleeve, and then the expansion sleeve extrudes the inner wall of the pipe fitting to be connected, so that the locking between the pipe fitting to be connected and the connecting seat is realized.

In a preferred embodiment of the present invention, the inner wall and the outer wall of the connecting sleeve are both provided with a retaining ring.

The utility model discloses a preferred embodiment, be equipped with a plurality of anti-skidding sand grips along circumference on the outer wall of expansion sleeve, the surface smooth transition of anti-skidding sand grip and expansion sleeve.

In a preferred embodiment of the present invention, the outer wall of the column body is provided with at least one flat section for cutting off the arc surface.

In a preferred embodiment of the present invention, at least one limit stop is disposed on the outer peripheral surface of the column body at a position away from the connecting sleeve, and a protrusion is correspondingly disposed on the side surface of the expansion sleeve.

In a preferred embodiment of the present invention, the column is a hollow column.

In a preferred embodiment of the present invention, the surfaces of the connecting seat and the expansion sleeve are rough surfaces.

In a preferred embodiment of the present invention, the inner wall of the expansion sleeve is formed with an arc groove which is matched with the arc surface and gradually increases in depth.

In a preferred embodiment of the present invention, two arc surfaces with gradually increasing radius and connected with each other are formed on the outer peripheral surface of the column body, and the two arc surfaces are respectively cut off by a flat section.

The utility model has the advantages that:

the quick connecting joint of the utility model has simple structure and low manufacturing cost; the pipe fittings or the rod pieces at two ends of the quick connecting joint only need to be rotated, so that the quick connection of the pipe fittings or the rod pieces can be realized, and the quick connecting joint is very convenient.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the quick connect coupling of the present invention;

FIG. 2 is a schematic view of the connecting socket of FIG. 1;

FIG. 3 is a schematic structural view of the expansion shell of FIG. 1;

the reference numbers in the figures illustrate: 100. a connecting seat; 110. a connecting sleeve; 111. a baffle ring; 120. a cylinder; 121. a cambered surface; 122. a flat cross section; 123. a limit stop block; 200. an expansion sleeve; 210. anti-skid convex strips; 220. a bump; 230. an arc groove.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, an embodiment of the quick connector according to the present invention includes a connecting base 100 and an expansion sleeve 200, and the quick connector can be used for connecting pipes or rods.

Specifically, referring to fig. 2, the connecting socket 100 includes a connecting sleeve 110 for inserting a pipe or a rod into the connecting socket, and a hollow column 120 is integrally formed at the other end of the connecting sleeve 110. In this embodiment, the inner diameter of the column body 120 is smaller than the inner diameter of the connection sleeve 110, so that a stop ring 111 is formed between the connection sleeve 110 and the column body 120 for limiting the pipe fitting inserted into the connection sleeve 110. The outer circumferential surface of the connecting sleeve 110 is also formed with a stopper ring 111 for limiting the fitting.

Two arc surfaces 121 with gradually increased radius and connected with each other are formed on the outer circumferential surface of the cylinder 120, and a pair of flat sections 122 for cutting off the arc surfaces 121 is formed on the outer wall of the cylinder 120.

Referring to fig. 3, the expansion sleeve 200 is an elastic non-closed expansion sleeve 200, and two arc grooves 230 are formed on the inner wall of the expansion sleeve and are matched with the arc surface 121, and the depth of the two arc grooves is gradually increased. The expansion sleeve 200 is sleeved on the column body 120 and is used for being inserted into the pipe fitting to be connected.

When the connecting seat 100 and the rod or the pipe fitting installed on the expansion sleeve 200 are rotated in a preset direction, the expansion sleeve 200 is driven to rotate relative to the connecting seat 100, the expansion sleeve 200 rotates along the arc surface 121 and is gradually extruded by the arc surface 121 to expand the expansion sleeve 200, and then the expansion sleeve 200 extrudes the inner wall of the pipe fitting to be connected, so that the locking between the pipe fitting to be connected and the connecting seat 100 is realized.

When the rod or the pipe installed on the connection seat 100 and the expansion sleeve 200 are rotated in opposite directions, in the process of rotating the expansion sleeve 200, the radius of the arc surface 121 is gradually reduced, the extrusion force applied to the expansion sleeve 200 is also gradually reduced, and the expansion sleeve 200 is contracted under the action of the elastic restoring force, so that the pipe and the connection seat 100 are unlocked.

In order to prevent the relative sliding between the pipe and the expansion sleeve 200, a plurality of anti-slip ribs 210 are preferably uniformly distributed on the outer wall of the expansion sleeve 200 along the circumferential direction, and the anti-slip ribs 210 and the surface of the expansion sleeve 200 are in smooth transition to increase the friction force between the pipe and the expansion sleeve 200.

In this embodiment, a pair of limit stops 123 is symmetrically disposed on the outer peripheral surface of the column body 120 away from the connecting sleeve 110, and a protrusion 220 is correspondingly disposed on the side surface of the expansion sleeve 200. The limit stopper 123 not only plays a role in axially limiting the expansion sleeve 200 on the column body 120, but also plays a role in limiting the rotation of the expansion sleeve 200 by being matched with the bump 220.

In the present invention, the connection seat 100 and the expansion sleeve 200 are preferably made of plastic. In order to increase the stability of the connection, it is preferable that the surfaces of the coupling seat 100 and the expansion sleeve 200 are roughened to increase the friction force when coupling with the pipe or the rod.

The quick connecting joint of the embodiment has simple structure and low preparation cost; the pipe fittings or the rod pieces at two ends of the quick connecting joint only need to be rotated, so that the quick connection of the pipe fittings or the rod pieces can be realized, and the quick connecting joint is very convenient.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A quick connecting joint comprises a connecting seat and an expansion sleeve, and is characterized in that the connecting seat comprises a connecting sleeve, one end of the connecting sleeve is used for inserting a pipe fitting or a rod piece, the other end of the connecting sleeve is fixedly provided with a column body, and the peripheral surface of the column body is provided with at least one section of cambered surface with gradually increased radius; the expansion sleeve is an elastic non-closed expansion sleeve which is sleeved on the column body and is used for being inserted into the pipe fitting to be connected;

when the connecting seat and the rod piece or the pipe fitting arranged on the expansion sleeve are rotated in the preset direction, the expansion sleeve is driven to rotate relative to the connecting seat, the expansion sleeve rotates along the cambered surface and is gradually extruded by the cambered surface to expand the expansion sleeve, and then the expansion sleeve extrudes the inner wall of the pipe fitting to be connected, so that the locking between the pipe fitting to be connected and the connecting seat is realized.

2. The quick connect coupling of claim 1, wherein said coupling sleeve has retaining rings on both the inner and outer walls.

3. The quick connect coupling of claim 1, wherein said expansion sleeve has a plurality of anti-slip ribs circumferentially disposed on an outer wall thereof, said anti-slip ribs being in smooth transition with a surface of said expansion sleeve.

4. The quick connect coupling of claim 1, wherein said post has an outer wall defining at least one flat section intercepting said arcuate surface.

5. The quick connect coupling of claim 1, wherein said post has at least one positive stop on its outer circumference remote from said coupling sleeve, and said expansion sleeve has a corresponding projection on its side.

6. The quick connect coupling of claim 1, wherein said post is a hollow post.

7. The quick connect coupling of claim 1, wherein the surfaces of said connecting base and said expansion shells are roughened.

8. The quick connect coupling of claim 1, wherein said expansion shell has an arcuate groove formed in an inner wall thereof to engage said arcuate surface and having a depth that increases.

9. The quick connect coupling of claim 1, wherein said cylindrical body has two arcuate surfaces formed on an outer peripheral surface thereof, said arcuate surfaces having a radius that increases gradually and being connected to each other, each of said arcuate surfaces being interrupted by a flat cross-section.