CN1156228A - Improvements in quick connections - Google Patents

Abstract

The invention relates to a momentary connection apparatus for a detachable pipe joint, comprising a valve and an O-shaped ring. The invention is characterized in that the valve, a valve spring, a fixed ring and the O-shaped ring or a seal retainer form an independent part arranged in a basic piece of an external accessory body. A back piece of the external accessory piece is fixed through an elastic clip plate behind an annular projection.

Description

The Quick Connect Kit that is used for the demountable tube joint

The present invention relates to a kind of Quick Connect Kit that is used for the demountable tube joint, more particularly relate to some Quick Connect Kits like this, it includes two interior accessories and outer accessory, inside and outside accessory is fixed on the termination for the treatment of jointed tubular workpieces, and making mutual can the assembling, this connection can be opened the stand under load valve that is placed in the outer accessory automatically.

In known configurations, outer accessory body is generally closely assembled by two tubular elements, generally be by female line a pipe fitting to be tightened onto in another pipe fitting to go, also guarantee simultaneously the assembling of valve and relevant sealing spring, valve is directly installed on the heart portion of accessory body, the sealing seat that forms with O shape ring matches, and O shape ring then suitably remains in the above-mentioned pipe fitting motionless.

Above-mentioned this structure can not make it the applied robot or mechanism hand carries out the automation assembling.In addition, be fixed to the accessory body rear part of pipe fitting end, its shape and size will change with the kind of the joint of facing, and this just increases the complexity that link stores significantly, if wish the variety range broad words of product.

Purpose of the present invention overcomes above-mentioned these shortcomings exactly.

The present invention relates to a kind of Quick Connect Kit that is used for to load and unload pipe joint, its outer accessory tubular body is closely to be assembled by a bare bones and a consequent, described tubular body has a valve, the O shape ring of this valve and a formation sealing seat and a sealing spring link to each other and join, when interior accessory be assembled to above-mentioned outside in the accessory time, valve just is in the enable possition, connection set is characterised in that, valve self, an outer ring that is enclosed within on the valve, O shape circle by end bearing before the outer ring, and the spring that is between described valve and the described outer ring constitutes independently parts, these parts were installed in the axial bore of bare bones before the consequent of fixing outer part, and owing to O shape is encircled or the deformable wall of sealing seat is axially fixed in the described axial bore for the rubbing action of above-mentioned axial bore smooth wall.

In other words, valve, be sleeved on outer ring on the valve, be installed in the sealing spring between described valve-supporting outer ring and the valve, O shape ring or the sealing seat that is installed on the valve-supporting outer ring formed independently parts, can be used as an integral body and in the outer accessory body of packing into, and before tubular element behind the described accessory body of assembling, the rubbing action that is produced with respect to the smooth hole wall of accessory body opening by the peripheral distortion of O shape ring or sealing seat and keep its position in the accessory body motionless, the tightening up of individual components owing to adopt the resilient clamp method to become very convenient.

By following explanation and accompanying drawing introduction, the present invention will be better understood.

Fig. 1 represents to constitute three parts of the outer accessory of Quick Connect Kit of the present invention, and three parts are together unassembled;

The axial sectional view that Fig. 2 amplifies for the stand under load valve part;

Fig. 3 is the cross-sectional view along Fig. 2 III-III;

Fig. 4 is an axial sectional view, and the outer accessory that it is expressed as last making matches with the interior accessory that is in a fixed position.

Should see, here the quick connection of being mentioned be exactly the claimant application on January 16 nineteen ninety-five, application number is the sort of described in the french patent application of No.95/00612, name of patent application is the ＂ of connection fast and safely that ＂ is used for the demountable tube joint, wonder more CONSTRUCTED SPECIFICATION, see also this application file.

In above-mentioned the sort of connection, the locking mechanism that is used for accessory in the axial restraint includes two groups of coaxial card hook parts 1 and 2 (see figure 1)s, and they slide by one and handle cover 3 controls, handle cover and are connected with a backspring 4.

But must see that the present invention can be applied to all quick connections that have the stand under load valve, no matter outside in the accessory in the locking mechanism of accessory which type of is.

See also accompanying drawing, the outer accessory that the present invention connects fast is to be made of three basic elements of character, is denoted as A, B and C in Fig. 1 respectively.

Parts 1 consist predominantly of a tubular element 5 that is equipped with above-mentioned locking mechanism 1-2-3-4.Pipe fitting 5 is furnished with ring 6 in the O shape in the annular concave seat that is placed in its axis hole 5 ', and matches with part B, and the detail drawing of part B is illustrated among Fig. 2 and Fig. 3.

As shown in the figure, part B includes a valve that is made of sliding sleeve 7, and sliding sleeve 7 is supporting the sealing head 7a of an appropriate configuration in an one termination.Near its another relative termination, sliding sleeve or valve 7 are provided with a loop portions 7b, loop portions 7b has slotted hole along its y direction, the assembling and the guiding that are used for valve-supporting outer ring 8, loop portions 7b also has slot segmentation in the vertical in addition, and formed radially protruding arm 7c uses so that slot milling is the sliding sleeve perforate.A spring 9 is equipped with between the loop portions 7b of the periphery of valve-supporting ring 8 and ring shoulder 8a and sliding sleeve,, spring pushing sliding sleeve also flexibly withstands on the ring 8 on the formed sealing seat its sealing head 7a, the sealing seat is made of O shape circle 10, and O shape circle is made by nature or synthetic elastomer.

Can see that the profile configuration of sealing seat or O shape ring 10 includes an annular concave seat on the one hand, it is the center with the respective bump 8b that is provided with on ring 8 end faces, includes a lip part 10a on the other hand.

Sealing head 7a is bearing on the ring 8, and this has just limited valve 7 moving axially under the effect of spring 9, and spring self guarantees that also ring is fixed on the position.Under these conditions, part B similarly is independently single parts, and its component parts have to be separated from each other seasonably.

Axially in the back perforate 5 ' of receiving member A pipe fitting 5, its fit is seen Fig. 4 to this individual components B.Shoulder 8a abuts against on the inner shoulder table 5b of tubular element 5, and sealing O shape circle 6 remains among the dimple 5a it.Should be noted that, the channel portion 10a of O shape ring 10, because its outstanding state is to insert in the axis hole of pipe fitting 5, thereby part B is to keep motionless in components A owing to frictional force.

Just can store after the equipped part B of components A, so that equipped with parts C again in the time of optimum.In fact parts C is made of a tubular element 11, and its front end inserting is in the back perforate 5 ' of basic pipe fitting 5, and the cross-sectional configuration at its rear portion should be able to guarantee that the rear portion is fixed on the end of pipe fitting.

Tubular element 11 can be with method commonly used, tightens up and/or bonds as spiral, is fixed in the tubular element 5.Yet, according to a special advantage of the present invention, one group of vertical tongue piece 5c that cuts out is arranged thereon on the inwall of tubular element 5 axis holes 5 ', tongue piece be oriented to inclination shape, inwardly and forward.Consider the obliquity of its direction, tongue piece 5c produces distortion in the hole 5 ' of pipe fitting 11 powerful inserting inlet pipe spares 5 time, depends on elastic recoil to be stuck in circular protrusion 11a back subsequently, and projection 11a is located on the circumference of tubular element 11 for this purpose.Here it is impossible wanting pipe fitting 11 is pulled down, and has been noted that do not need what special instrument in above-mentioned assembly working, thereby when implementing attended operation, it is very simple that assembly working just becomes.

Can also see that by supporting and the clamping action between shoulder 8a and pipe fitting 11 ora terminalis, sealing seat or O shape ring 10 have guaranteed the assembling sealing of pipe fitting 5 and pipe fitting 11 simultaneously.

The running of the valve 7-7a then valve with commonly used is the same, and promptly outside the interior accessory 12 of connection set is assembled among the accessory body 5-11 time, valve is pushed and moves into the enable possition vertically.

It is motionless that part B can keep, and no longer is owing to be provided with a collar flange 10a, but because frictional force, owing to give O shape ring periphery a deformability that increases the weight of, to guarantee its frictional force with respect to hole 5 ' inwall.

Claims (6)

1. Quick Connect Kit that is used for the demountable tube joint, the tubular body of its outer accessory is closely to be assembled by a bare bones and a consequent, described tubular body has a valve, the O shape ring of this valve and a formation sealing seat links to each other with a sealing spring and joins, when interior accessory be assembled to above-mentioned outside in the accessory time, described valve just is in the enable possition, it is characterized in that valve self, an outer ring that is enclosed within on the valve, O shape circle by the outer end bearing of outer ring, and a spring that is between described valve and the described outer ring constitutes independently parts, these parts were installed in the axial bore of above-mentioned bare bones before the consequent of fixing outer accessory, and because O shape is encircled or the deformable wall of sealing seat axially is fixed in the described axial bore for the rubbing action of above-mentioned axial bore smooth wall.

2. connection set according to claim 1 is characterized in that described O shape ring or sealing seat have a collar flange.

3. connection set according to claim 1 is characterized in that described outer ring has an annular projection, and this projection matches with annular recess on the described O shape circle, to guarantee that O shape circle can be the center with the outer ring.

4. connection set according to claim 1 is characterized in that supporting role and snap action between the ora terminalis of outer shoulder by outer ring and consequent, and two parts that described O shape ring guarantees to constitute outer part have closely to be assembled.

5. connection set according to claim 1 is characterized in that the consequent of outer part is fixed in the described bare bones by elasticity chucking way.

6. connection set according to claim 5, the inwall that it is characterized in that described bare bones axial bore has from the vertical tongue piece that cuts out, the angular orientation of described tongue piece makes it to produce resiliently deformable, and can withstand the periphery of back body in the annular protrusion back of consequent.

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