CN201225472Y

CN201225472Y - Rapid plug-in pipe joint

Info

Publication number: CN201225472Y
Application number: CNU2008201217932U
Authority: CN
Inventors: 乔坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-18
Filing date: 2008-07-18
Publication date: 2009-04-22
Anticipated expiration: 2018-07-18

Abstract

The utility model relates to a pipe joint, in particular to a quickly inserted-connected pipe joint which comprises a pipe joint body. Four stepped holes are sequentially arranged in the pipe joint body by size, and are respectively provided with a sleeve, a fixed ring, a V-shaped sealing ring and a sealing ring. The sleeve is pressed and fixed by the fixed ring. The upper end surface of the sealing ring props against the lower end surface of the V-shaped sealing ring. A clamping ring is arranged below the sealing ring. An ejecting ring and a pressing ring are respectively arranged below the clamping ring. Compared with the prior art, the quickly inserted-connected pipe joint has the advantages of reasonable design, simple structure, good sealability, high compressive resistance, reliable connection, safety, antivibration and high reliability, and is suitable for various working conditions under different environments.

Description

The fast insert-pull pipe joint

Technical field

The utility model relates to a kind of pipe joint, comprise the fast insert-pull pipe joint that connects flexible pipe in the industries such as lathe, engineering machinery, boats and ships, mould manufacturing, household electrical appliances, medical apparatus, precision type instrument, Aero-Space, a kind of fast insert-pull pipe joint that is applied to the automobile pipe-line system especially is provided.

Background technique

The a lot of fields of pipe connection system in industry are all in occupation of important effect, automobile pipeline requisite system in the vehicle especially particularly, it has occupied crucial status in chassis braking system and oil supply system, wherein the good of pipe joint is the important indicator of the whole vehicle safety of influence, what generally adopt in the commercial car system at home at present all is regular screw threads jointing type pipe joint, this kind pipe joint poor air-tightness, assemble loaded down with trivial details, in the case, spigot joint arises at the historic moment soon.The patent No. is CN02223142, denomination of invention discloses the rapid pipe joint of a kind of vehicle nylon pipe air braking system for the Chinese patent of " rapid pipe joint of a kind of vehicle nylon pipe air braking system ", it is characterized in that the pipe joint body becomes the step inner round wall, and locking ring is housed, the nylon tube chuck, hold-down ring, seal ring, lining, the front end inner conical surface of locking ring and the rear portion of hollow are that the front portion of annulus post is that the middle part male cone (strobilus masculinus) of nylon tube chuck of annular prismatic face is adjacent, nylon tube collet front inner conical surface is adjacent with hold-down ring rear end male cone (strobilus masculinus), and the hold-down ring front end is stepped shape and seal ring rear end and is stepped shape and is interlockingly connected.The patent No. is CN200520102458, and denomination of invention is " quick inserting joint ", it is characterized in that pipe joint body tubular lining core, and two seal rings, snap ring has dottle pin between two seal rings, and snap ring is the tapered collar that has opening, and an end that connects nylon tube has clamping sleeve.More than the deficiency of two patents all are the tightness problems that fundamentally do not solve pipe joint, and complex structure, the processing cost height, vibration resistance, reliability and each performance of operating condition are all lower.

Summary of the invention

The utility model is at above deficiency, a kind of reasonable in design, simple in structure, good airproof performance, withstand voltage height are provided, are connected firmly, safety, antivibration, reliability height, the fast insert-pull pipe joint of different operating modes under the suitable varying environment.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of fast insert-pull pipe joint comprises a pipe joint body, a lining, a V-shaped seal ring, a snap ring, a retaining ring, a seal ring, a hold-down ring and an ejection ring.Four step holes are from small to large arranged in described pipe joint body successively, in the pipe joint body, lining is housed, lining utilizes retaining ring to be fixed, the V-shaped seal ring of packing into then, the lower end surface that utilizes the upper-end surface of seal ring to withstand V-shaped seal ring, the U type groove five equilibrium that the snap ring inboard is not waited by quantity, and upwards be bent into 46 °-57 ° angle, the snap ring bending part is packed in the seal ring, the gap that holds nylon tube is arranged between described lining, V-shaped seal ring and snap ring.Pack into successively then ejection ring, hold-down ring.Snap ring is assemblied in and utilizes hold-down ring to fix on the body, utilizes both inclined-planes to fix between ejection ring and the hold-down ring, and the ejection ring top contacts employing roll extrusion encapsulation between last hold-down ring and the pipe joint body with the snap ring inner headed face.

A kind of fast insert-pull pipe joint of the present utility model improves the structural type of existing quick inserting joint, enhance product performance, improve the fit of existing automobile pipeline, increase work efficiency, reduce overall cost, the fast insert-pull process can guarantee the insertion of pipe repeated multiple times or extract.Good, the withstand voltage height of this sealing structure, be connected firmly, safety, antivibration, reliability height, different operating modes under the suitable varying environment, and assembling simply is not subjected to spatial constraints.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a kind of structural front view of fast insert-pull pipe joint;

Fig. 2 is a kind of structural front view of snap ring of fast insert-pull pipe joint;

Fig. 3 is a kind of structure plan view of snap ring of fast insert-pull pipe joint;

Fig. 4 is a kind of user mode figure (curved logical) of fast insert-pull pipe joint;

Fig. 5 is a kind of user mode figure (bilateral) of fast insert-pull pipe joint;

Fig. 6 is a kind of user mode figure (threeway) of fast insert-pull pipe joint;

Fig. 7 is a kind of user mode figure (connection) of fast insert-pull pipe joint;

Fig. 8 is a kind of user mode figure (four-way) of fast insert-pull pipe joint.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.

Provide a most preferred embodiment below:

As shown in Figure 1, a kind of fast insert-pull pipe joint, comprise pipe joint body 1, four step holes are from small to large arranged in the described pipe joint body 1 successively, lining 2, retaining ring 3, V-shaped seal ring 4 and seal ring 5 are set respectively, and described lining 2 utilizes retaining ring 3 to be fixed, and the lower end surface of V-shaped seal ring 4 is withstood in the upper-end surface of described seal ring 5, the below of described seal ring 5 is provided with snap ring 6, and described snap ring 6 belows are provided with respectively by ejection ring 7 and hold-down ring 8.

Snap ring 6 inboards are provided with U type groove 10, and upwards are bent into 46 °-57 ° angle.

A kind of fast insert-pull pipe joint of the present utility model in use, with plastics or rubber pipe 9 insertion tube joint bodies 1 root, there is lining 2 at center in pipe joint body 1, the effect of lining 2 mainly is, flexible pipe 9 is led, prevents that the flexible pipe bending angle is excessive, increase tightness, guarantee the stability of using.Lining 2 utilizes retaining ring 3 and pipe joint body 1 interference fit to fix.In the outside of lining 2 V-shaped seal ring 4 is arranged, its objective is the gas backstreaming leakage that prevents in lining 2 inflow flexible pipes 9, in the time of in reflux gas enters V-shaped seal ring 4, utilize atmospheric pressure, air pressure is big more, and gas is big more to the pressure of V-shaped seal ring 4 sides, and sealing is just good more so.The bottom surface of V-shaped seal ring 4 contacts with the upper-end surface of seal ring 5, utilize the support fixation of seal ring, the internal diameter of seal ring 5 requires to make things convenient for flexible pipe 9 freely to plug, the interior step hole of seal ring 5 allows that the dogleg section of snap ring 6 enters inside simultaneously, the catching that snap ring 6 quantity do not wait holds on to the flexible pipe 9 of insertion, prevents flexible pipe 9 slippage under pressure.When flexible pipe 9 inserted the endoporus of snap ring 6, the cutting edge of snap ring 6 catchings tightly embedded on the flexible pipe outer wall, increased the pulling-out force of flexible pipe 9.

In the time will extracting flexible pipe 9, withstand ejection ring 7 roots with hand or other instruments, inwardly push a segment distance, ejection ring 7 struts several angle with the catching of snap ring 6 automatically, and snap ring 6 unclamps flexible pipe 9, easily flexible pipe 9 is disassembled.

This sealing structure is good, it is big to bear pressure, be connected firmly, safety, antivibration, reliability height, and different operating modes under the suitable varying environment, and assembling simply is not subjected to spatial constraints, efficiency of assembling height.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.

Claims

1, a kind of fast insert-pull pipe joint, comprise the pipe joint body, it is characterized in that, four step holes are from small to large arranged in the described pipe joint body successively, lining, retaining ring, V-shaped seal ring and seal ring are set respectively, and described lining utilizes retaining ring to be fixed, and the lower end surface of V-shaped seal ring is withstood in the upper-end surface of described seal ring, the below of described seal ring is provided with snap ring, and described snap ring below is provided with respectively by ejection ring and hold-down ring.

2, a kind of fast insert-pull pipe joint according to claim 1 is characterized in that, described snap ring inboard is provided with U type groove, and upwards is bent into 46 °-57 ° angle.