CN202048294U

CN202048294U - Quick coupling

Info

Publication number: CN202048294U
Application number: CN2011201080999U
Authority: CN
Inventors: 童撮洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-08
Filing date: 2011-04-08
Publication date: 2011-11-23
Anticipated expiration: 2021-04-08

Abstract

The utility model provides a quick coupling, which belongs to the technical field of pipeline connection, and solves the problem of the existing unfirm pipeline connection. The quick coupling comprises a tubular body and an insertion tube, wherein a location step is arranged on the inner wall of the body, an annular collet ring with a plurality of latches is fixed at the inner wall of the end opening of the body, each latch is made by a metal sheet and extends towards the axial direction of the collet ring, a seal ring is fixed between the annular collet ring and the location step, the insertion tube is tubular, the inner end of the insertion tube is inserted from the end opening of the body, and the outer end of the insertion tube is provided with a loading part which is axially protruded. The quick coupling belongs to the plug and play type, after a tube is inserted, the latches are used for fixing, the other subsequent operation is not needed, and the quick coupling is simple and convenient to install. When dismantling is carried out, the insertion tube is only needed to be pressed inwards, so the latches can be loosened, and the tube is conveniently pulled out. In addition, the position of the seal ring is kept unchanged, displacement cannot be generated when the tube is inserted, and the connection part is ensured to have a good sealing property.

Description

A kind of rapid pipe joint

Technical field

The utility model belongs to the pipeline connection technology field, relates to a kind of rapid pipe joint, particularly a kind of rapid pipe joint that is used for being connected on fluid lines such as gas, liquid and the valve usefulness.

Background technique

Adopting water pipe when water supply and sewerage pipeline is laid in the daily life, galvanized pipe is because of getting rusty easily and rotting, water quality to potable water exerts an influence and is eliminated gradually, and the rigidity characteristics that has of metal pipe element itself, and also not being suitable for some needs corner.Now more common is exactly to adopt plastic water pipe to substitute, but the end of plastic water pipe can not tapping, can't be connected with valve or joint by screw thread, therefore, plastic water pipe all adopts pressure ring locking to connect mostly, hot melt connects is connected with mode such as bonding.

Need use special tool when adopting hot melting way to install, install cumbersomely, also be not suitable for the user and change plastic tube voluntarily.Utilize Bond to carry out the bonding harmful matter and being penetrated in the water of also can overflowing in time, thereby the water quality of potable water is produced harmful effect.Therefore, the most frequently used Placement is exactly that the pressure ring locking connects now, and wherein some has also applied for patent.

" fast joint of waterpipe " that provides as Chinese patent, its notification number is: CN201145103Y, the rapid pipe joint of modify-water pipe comprises the joint body of hollow, be connected with the screw thread fixed cover at the two ends of joint body, joint body is built-in with metal clasp, be shaped on the back-off latch in the metal clasp, in the outside of metal clasp and back-off latch pressure ring be installed, pressure ring is equipped with seal ring outward.By screwing the screw thread fixed cover, plastic tube and joint body are linked.The defective that this linkage structure exists is, because seal ring is clipped between screw thread fixed cover and the pressure ring, screws at the screw thread fixed cover and can make the seal ring distortion in the process, thereby influenced the sealing of joint.Simultaneously this class relies on and screws nut and be fixedly coupled mode and be easy in use for some time that joint takes place loosening and causes escape of liquid.

Summary of the invention

The purpose of this utility model is at the problems referred to above, and the rapid pipe joint that provides a kind of energy to be connected with plastic water pipe rapidly has it and is connected firmly, the characteristic of convenient disassembly, good airproof performance.

The purpose of this utility model can realize by following technical proposal: a kind of rapid pipe joint, the body and the intubate that comprise a tubulose, the inwall of body is provided with positioning step, it is characterized in that, the inwall of described body port is fixed with an annular dog collar with several latches, each latch employing tinsel is made and is stretched out towards the dog collar axis direction, between annular dog collar and positioning step, be fixed with seal ring, described intubate in a tubular form, insert from the port of body its inner, and the outer end is provided with the forced section that radially protrudes.

Plastic tube is inserted into when connecting in the body, passes intubate, dog collar and seal ring successively, and the latch unification on the dog collar is at this moment stretched out towards the plastic tube direction, acts on the plastic tube surface, and plastic tube is fixed.Seal ring is fixed between annular dog collar and the positioning step and is fixed with between the seal ring, seal ring closely is socketed on the pipe fitting seals.During dismounting, external force acts on the forced section of intubate intubate is pressed into, and the inner of intubate is acted on the latch of dog collar, and each latch is backed down to dog collar outer ring direction, and latch and plastic tube surface is broken away from, and can extract pipe fitting out in body.

As a kind of preferred, the inner of described intubate is provided with annular retaining ring, be provided with the snap ring that is socketed in the opening on the intubate between the port of body and the back-up ring, the outer end of body is the conical surface shape that shrinks gradually, the outside dimension of back-up ring is greater than the internal diameter size of snap ring, and the outside dimension of snap ring is then greater than the aperture of body outer end port.Back-up ring plays position-limiting action, prevents that intubate from detaching body.

As a kind of preferred, described each latch is connected on the internal diameter of dog collar, but and to the interior extreme direction of body tilt to stretch out and elasticity scalable.

Each latch stretches out towards the inner of body, and is partial to the plastic tube direction, and plastic tube inserts along the plane of inclination of latch, and latch is backed down to dog collar outer ring direction.Latch play the guiding role when plastic tube inserts, and utilizes the reset function of self to act on the plastic tube after connection is finished, and plays the effect of fixed plastics pipe.

As a kind of preferred, described each latch annular be evenly distributed on the dog collar and the angle of inclination identical.The angle of inclination of each latch is identical, and is circumferential setting, form one round table-like, circumferentially stepless action is played more stable fixation on the plastic tube surface.

As a kind of preferred, described forced section is connected in the outer side surface of intubate ringwise.

As a kind of preferred, be provided with ring washer between described seal ring and the dog collar.Packing ring is fixed seal ring with positioning step.

As a kind of preferred, the outer side surface of described back-up ring is provided with the annular slope that matches with the latch that tilts.

Compared with prior art, this rapid pipe joint belongs to plug and play type, and pipe fitting inserts the own latch in back and fixes, and does not need other follow-up work, installs simple and convenient.Only need inwardly be pressed into intubate during dismounting latch is unclamped, the convenient pipe fitting of extracting out.And the position of seal ring is maintained fixed, and can not be shifted in the pipe fitting insertion process, guarantees that there is excellent sealing performance the joint.Outer end in intubate is provided with forced section, and is firmly convenient, is convenient to dismounting.

Description of drawings

Fig. 1 is the structural representation of this rapid pipe joint.

Fig. 2 is the structural representation of intubate in this rapid pipe joint.

Fig. 3 is the structural representation of snap ring in this rapid pipe joint.

Fig. 4 is the structural representation of dog collar in this rapid pipe joint.

Fig. 5 is the side view of Fig. 4.

Among the figure, 1, body; 11, positioning step; 2, intubate; 3, snap ring; 4, dog collar; 41, latch; 5, packing ring; 6, seal ring; 7, back-up ring; 71, annular slope; 8, forced section.

Embodiment

As shown in Figure 1, this rapid pipe joint comprises with individual body 1 in a tubular form, in the body 1 by and be provided with positioning step 11, seal ring 6, packing ring 5, dog collar 4 and snap ring 3 outward successively.Positioning step 11 is connected in the body 1, seal ring 6 wherein, packing ring 5, dog collar 4 and snap ring 3 closely are abutted together successively, the outer end of body 1 is the conical surface shape that shrinks gradually, its port sizes is less than the outside dimension of snap ring 3, and body 1 outer end is fixed with seal ring 6, packing ring 5, dog collar 4 and snap ring 3 that step 11 will be between them.The intubate 2 of a tubulose is inserted in the body 1, and the outer end of intubate 2 is stayed outside the body 1.

Shown in Fig. 2～5, the inner of intubate 2 is fixed with annular retaining ring 7, and the outer side surface of back-up ring 7 is provided with annular slope 71, and the outer end of intubate 2 then is provided with the forced section 8 of annular.Snap ring 3 is the ring-type of opening, is socketed in the surface of intubate 2.Annular has several latches 41 that adopts tinsels to make on the dog collar 4, but each latch 41 towards the interior extreme direction of body 1 tilt to stretch out and elasticity scalable, all latch 41 annulars be evenly distributed on the dog collar 4 and the angle of inclination identical.

Plastic tube is inserted into when connecting in the body 1, passes intubate 2, dog collar 4, packing ring 5 and seal ring 6 successively, and plastic tube backs down latch 41 to dog collar 4 outer ring directions.Latch 41 play the guiding role when plastic tube inserts, and utilizes the reset function of self to act on the plastic tube after connection is finished, and plays the effect of fixed plastics pipe.The angle of inclination of each latch 41 is identical, and is circumferential setting, form one round table-like, circumferentially stepless action is played more stable fixation on the plastic tube surface.Positioning step 11 is fixed seal ring 6 with packing ring 5, seal ring 6 closely is socketed on the plastic tube seals.

The outside dimension of snap ring 3 is greater than the aperture of body 1 outer end port, thereby snap ring 3 can not detach body 1.The external diameter of back-up ring 7 is again greater than the internal diameter size of snap ring 3 simultaneously, and intubate 2 can not detach body 1 equally.

During dismounting, external force acts on the forced section 8 of intubate 2 intubate 2 is pressed into, and the inner of intubate 2 is acted on the latch 41 of dog collar 4, each latch 41 is backed down to dog collar 4 outer ring directions, latch 41 and plastic tube surface are broken away from, can in body 1, extract plastic tube out, finish dismounting.

Claims

1. rapid pipe joint, the body (1) and the intubate (2) that comprise a tubulose, the inwall of body (1) is provided with positioning step (11), it is characterized in that, the inwall of described body (1) port is fixed with an annular dog collar (4) with several latches (41), each latch (41) employing tinsel is made and is stretched out towards dog collar (4) axis direction, between annular dog collar (4) and positioning step (11), be fixed with seal ring (6), described intubate (2) in a tubular form, insert from the port of body (1) its inner, and the outer end is provided with the forced section (8) that radially protrudes.

2. a kind of rapid pipe joint according to claim 1, the inner of described intubate (2) is provided with annular retaining ring (7), be provided with the snap ring (3) that is socketed in the opening on the intubate (2) between the port of body (1) and the back-up ring (7), the outer end of body (1) is the conical surface shape that shrinks gradually, the outside dimension of back-up ring (7) is greater than the internal diameter size of snap ring (3), and the outside dimension of snap ring (3) is then greater than the aperture of body (1) outer end port.

3. a kind of rapid pipe joint according to claim 1 and 2, described each latch (41) is connected on the internal diameter of dog collar (4), and to body (1) but interior extreme direction tilt to stretch out and elasticity scalable.

4. a kind of rapid pipe joint according to claim 3, described each latch (41) annular are evenly distributed on that dog collar (4) is gone up and the angle of inclination is identical.

5. a kind of rapid pipe joint according to claim 2, described forced section (8) is connected in the outer side surface of intubate (2) ringwise.

6. a kind of rapid pipe joint according to claim 1 and 2 is provided with ring washer (5) between described seal ring (6) and the dog collar (4).

7. a kind of rapid pipe joint according to claim 2, the outer side surface of described back-up ring (7) are provided with the annular slope (71) that matches with the latch that tilts (41).