CN2180858Y

CN2180858Y - Pipe joint

Info

Publication number: CN2180858Y
Application number: CN 93226411
Authority: CN
Inventors: 洪武雄
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-12
Filing date: 1993-10-12
Publication date: 1994-10-26
Anticipated expiration: 2003-10-12

Abstract

The utility model relates to a joint for the connection of a pipe body, belonging to the field of hardware equipment. The utility model comprises a joint body, a guide ring, a deterrent ring, a liberation ring, etc. The cylindrical guide ring is positioned on the joint body, and the inner part of the cylindrical guide ring is provided with a ring-shaped groove for placing the deterrent ring. The deterrent ring, is a jagged ring body, and the other liberation ring is positioned and tabled with the guide ring. In addition, the liberation ring is cylindrical and the liberation ring has certain length. When the utility model is used, the pipe body is inserted into the joint, after the pipe body is bitten inside by the deterrent ring, the pipe body is pulled outside and the pipe body is limited by the liberation ring until the pipe body is pulled slightly over a maximum biting position of the deterrent ring and the pipe body. At the point, the pipe body is connected in an optimum way. When the pipe body needs to be pulled out, the liberation ring only needs to be pushed. The utility model is characterized in convenient operation, good connection effect, etc.

Description

Pipe joint

Pipe joint relates to the joint that a kind of body connects, and belongs to five metals equipment field.

Be commonly used to connect the pipe joint of pliability fluid delivery tube, its joint body inwall is provided with several lock pawls, this lock pawl is inwardly narrowed down gradually by the insertion mouth of pipe and tilts, and two lock pawls and peripheral direction have equal intervals, when inserting body, push lock pawl front end open by tube wall, body inserts, lock body promptly moves the extraction direction of body, and make it nip tube wall and form unlikely being drawn out of by frictional force etc. and come off, and will extract body out the time, then on pipe joint, be provided with and can outwards push lock pawl front-end face open and the liberation ring of the body that makes it no longer to nip.The pipe joint of this kind structure, its lock pawl needs certain rigid, so lock pawl itself need have suitable thickness, to guarantee rigidity, in order to allow the lock pawl tube wall of nipping easily, the corpus unguis front end should form sharp keen cutter shape in addition, but this kind structure, because the lock pawl lacks flexibility originally as rigidity, therefore when mobile body, the lock pawl pawl cutter that inserts body is difficult to bite body, especially the body of high hardness material is done thinly as locking pawl, lacks rigidity again.Another kind of pipe joint (referring to accompanying drawing 1), it adopts thin elastic plate to cut a hole into saw-tooth ring (referring to accompanying drawing 2), with the whole institute's tentering degree that bends to of its external diameter ora terminalis, its outer rim 4 sections is formed Shape is prevented body 1(referring to Fig. 3), this prevents body 1 usefulness thin elastic plate to process, and it can be nipped easily with its inner rim, and its outer rim 4 also bends to

Shape, it has can bring into play the to a certain degree advantage of rigidity, but when this pipe joint is used for the fluid delivery tube of automaton device, its pliability pipe 5(is referring to Fig. 4) bend to circular-arc use by straight line shape, between the bending position inboard and the outside, the inner edge position of being bitten at the prevention body 1 of body 5 outer walls can be offset gradually, body 5 outer walls can form a part in the shape of a spiral the shape tooth go into ditch, so, when body 5 must be center when turning round with its axis by chance, body 5 promptly is easy to be come off by joint body.As body 5 is relatively hard materials such as nylon, because it is more shallow to prevent the inner edge of body 1 to nip, when sliding, comes off sometimes.

The purpose of this utility model provides a kind of pipe joint of preventing physical efficiency more firmly to bite tube wall, makes it reach the function of adapter.

The purpose of this utility model realizes with following mode, earlier a cylindric lead ring is placed in the joint body, and the lead ring inner end is provided with annular groove, prevents ring for putting, and prevents ring to be the flexuose ring body, and its outer rim section is Shape, the liberation ring of another cylindric tool certain-length is inserted lead ring, chimeric with it, the liberation ring can be limited mobile in lead ring, can directly be passed the liberation body by the adapter body places in the prevention ring, and prevented ring to sting the people, and then body is pulled outward, make and prevent the ring inner edge along with body moves, and be that fulcrum is done circular motion with its outer rim, behind the position of nipping through inner edge and body maximum, promptly, touch and liberate the expansion that encircles just over preventing ring outer rim and inner edge line perpendicular to the tube wall position, this moment, the amount of nipping was many, intensity is big, and is partly limited by the liberation ring extension, can prevent from fully not come off.In the time will pulling out body, push as long as will liberate ring, promote to bite the prevention ring of body, make and prevent the ring inner edge to decontrol body, can pull out body.In order to prevent to prevent coming off of ring, after preventing ring to embed the lead ring annular groove, lead ring cylindrical part bottom is pressed into the conical ring shape gets final product.The practicality reasonable in design of this model utility, method is simple, and is easy to operate.

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is existing pipe joint sectional view.

Fig. 2 prevents the explanatory drawing of body for existing pipe joint.

Fig. 3 prevents the sectional view of body for existing pipe joint.

Fig. 4 prevents the use schematic representation of body for existing pipe joint.

Fig. 5 is a sectional view of the present utility model.

Fig. 6 prevents the ring explanatory drawing for the utility model.

Fig. 7 prevents the sectional view of ring for the utility model.

Fig. 8 is the utility model lead ring and the explanatory drawing of preventing ring.

Referring to Fig. 5, Fig. 6 and Fig. 7, cylindric joint body 10 inwalls begin from managing insertion end, form 11, the second sections bodys 12 of first section body and the 3rd section body 13, and each section internal diameter of tube body reduces gradually according to last order.One cylindric lead ring 14 engages and is placed in the joint body 10 with first section body 11 with its blade of a sword portion 15, its innermost end portions is provided with an annular groove 17, prevent ring 22 for putting, axial middle body inwall at lead ring 14 is provided with limitation part 16, restriction liberation ring 25 is deviate from, joint body 10 internal diameters, its second section body, 12 part internal diameters are roughly the same with body 18 external diameters that are inserted into, and utilize the 3rd section body 13 to decide the position of the insertion front end that inserts body 18.Being cylindric resilient sleeve 19 inserts and remains in the joint body 10, so, body 18 outer walls that insert in the joint body 10 contact to reach sealing with sleeve 19, prevent ring 22 usefulness to be washed into ring-type than the Boping plate-like elastic material, it is the breach 23 that an inner edge and outer rim form most radial mutual arrangements respectively, 24 flexuose ring body, the outer rim that is formed breach 24 gives bending in the same direction with institute's tentering degree, its section one-tenth＜shape, prevent ring 22 crooked and embed in the annular groove 17 with one section direction of insertion of its outer rim to body 18, and the curved end outer rim embeds the restriction section of joint body and remains in the joint body 10, stop claw is made of the inner edge of the breach 23 that forms, stop claw body 18 outer walls of nipping, body 18 is connected with joint body 10, when not inserting body 18, preventing ring 22 is to be indeformable state, and its inner rim limit is vertical with the axis plane of joint body 10; Anotherly be substantially liberation ring 25 cylindraceous and be embedded in the lead ring 14, it moves a predetermined fore-and-aft distance in pipe joint body 10, the inner edge of the prevention ring 22 on body 18 outer walls is bitten in promotion, prevent ring 22 to decontrol nipping and make to body 18, liberation ring 25 is a certain-length, promptly when body 18 outer walls that insert keep being prevented ring 22 to nip and body 18 when pull-out direction spurs, preventing ring can be that fulcrum is done circular-arc rotation with its outer rim, and make it just over position that the maximum of tube wall is nipped, but this liberation ring 25 and post-tensioning are extremely to greatest extent, and make the inner edge of preventing ring 22 contact and lock with liberation ring 25.The expansion 26 of liberation ring 25 is contacted with the limitation part 16 of above-mentioned lead ring 14, because its blade of a sword portion 27 is contacted with the end face of lead ring 14, the moving range of its axial direction is restricted simultaneously.The taper that contracts in the peripheral surface of this liberation ring 25 is formed by expansion 26 forward end, and its tip, when liberation ring 25 when its expansion 26 contacts with limitation part 16, just make its outer end be contacted with the inner peripheral surface of above-mentioned prevention body 22, or leave the interval of a segment distance with inner peripheral surface.

During enforcement, insert body 18 after inserting in the joint body 10 to

liberation ring

25,18 of bodys are contending with and are preventing the elastic force of ring 22 inner edges and push its inner rim open, be inserted into the institute precalculated position up to it, be that body 18 front ends touch the 3rd section body 13, prevent ring 22 to be urged inside side because of inserting body 18, but it is as above-mentioned because of the crooked direction of outer rim towards compressing annular groove 17 inwalls, but prevent ring 22 not reason body 18 pushing and in annular groove 17, even repeatedly insert body 18, prevent the ring inner edge often also only to be open to deciding angle, so preventing ring 22 inner edges is to contact with the state of the predetermined angle that tilts with body 18 outer walls, and the elastic force that utilizes itself nips in body 18 outer walls, body 18 is unlikely come off.Prevent this moment the inner edge position of ring 22 at P, then, a state spurs some distances to body 18 to pull-out direction according to this, nip and encircle 22 inner edges along with body 18 moves in the prevention of body 18, and be that fulcrum is done circular motion with the outer rim of preventing ring 22, line by preventing ring 22 outer rims and inner edge is perpendicular to the maximum of the body 18 outer walls position of nipping, the liberation that its inner rim is pulled back to make expansion 26 contact limitation part 16 states encircles 25 front ends and roughly is till the position contacting Q, this position Q is just over the above-mentioned maximum position of nipping, herein inner edge to the amount of nipping of body 18 outer walls then than more in above-mentioned P position, make that body 18 can prevent from not come off fully, Q wants to pull out body 18 in this position, will not slippage and be drawn out, simultaneously, inner edge surface is encircled 25 front ends by liberation and limits, stoped due to its circular arc rotation, liberation ring 25 front ends have the prevention effect to inner edge surface, on the other hand, by position Q body 18 is pushed, position from Q to P must surpass inner edge to the maximum of body 18 position of nipping, reply in above-mentioned P position so inner edge is unlikely, therefore, inner edge is to be in settling position the same when not inserting body, and body 18 outer walls are become locking state and nip, so can prevent coming off of body 18.

As mentioned above, prevent ring 22 inner edges if just over the maximum of body 18 outer walls being nipped position and touch liberation ring 25 front ends and be lockable, even be bent to the circular arc state by linear state before body 18 uses, inner edge is can not produce displacement to tube wall, so can on tube wall, not form the helical chase yet, thereby remove the situation that body 18 can be drawn out or come off.When moving to the Q position,, then can obtain certain nipping, move to the Q position by the P position again, can implement the connection of body 18 really if insufficient and when causing body 18 to slide, then body 18 is pushed again to the wedging of body 18 in the P position by the P position.When extracting body 18 out, be about to liberation ring 25 and push, because prevent ring 22 to be in locking state, so can't insert easily, should earlier body 18 be pushed, make and prevent ring 22 interior cause Q location restores to the P position, push liberation ring 25 again and can remove nipping of inner edge, pull out body 18.Referring to Fig. 8, in order to prevent to prevent ring 22 to come off, lead ring 14 terminal parts are designed to thin cylinder state, will prevent ring 22 to embed in the cylinder of lead ring 14 then by decide direction, at last the cylindrical part end is pressed into the conical ring shape.Because cylindrical part conquassation part inner wall limit can stop and prevent the above distortion of ring 22 inner edge elastic limits.

Claims

1, a kind of pipe joint comprises joint body, lead ring, prevention ring and liberation ring, it is characterized in that:

A. lead ring (14) is placed in the joint body (10), is cylindric, and its inner end is provided with annular groove (17), prevents ring (22) for putting, and its axial middle body inwall is provided with limitation part (16), and restriction liberation ring (25) is deviate from;

B. preventing ring (22) is the flexuose ring body that an inner edge and outer rim form the breach (23) of most radial mutual arrangements respectively, one section direction of insertion bending of its outer rim to body (18), and the curved end outer rim embeds the restriction section of joint body and remains in the joint body (10), stop claw is made of the inner edge of the breach that forms (23), stop claw is stung people's body (18) outer wall, and body (18) is connected with joint body (10);

C. liberation ring (25) is embedded in the lead ring (14), it moves a predetermined fore-and-aft distance in pipe joint body (10), the inner edge of the prevention ring (22) on body (18) outer wall is bitten in promotion, prevent ring (22) to decontrol nipping and make to body (18), liberation ring (25) is a certain-length, promptly when body (18) outer wall that inserts keep being prevented ring (22) to nip and body (18) when pull-out direction spurs, preventing ring can be that fulcrum is done circular-arc rotation with its outer rim, and make it just over position that the maximum of tube wall is nipped, this liberation ring (25) but and post-tensioning to greatest extent, contact and lock and make the inner edge of preventing ring (22) encircle (25) with liberation.

2, according to the described pipe joint of claim 1, it is characterized in that lead ring (14) placed prevent ring (22) after, oppress that it is terminal and make this place become the conical ring shape.