CN206206865U

CN206206865U - Pipe fitting fast joint

Info

Publication number: CN206206865U
Application number: CN201621240696.6U
Authority: CN
Inventors: 胡华贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-11-19
Filing date: 2016-11-19
Publication date: 2017-05-31
Anticipated expiration: 2026-11-19

Abstract

The utility model is related to the technical field of quickly jointed tubular workpieces, more particularly, to a kind of pipe fitting fast joint, including the housing with both ends open, lower port in housing is provided with hold-down ring, several claws are circumferentially provided with hold-down ring, shifting up in the lower port of housing acts on the unblock sleeve of hold-down ring, it is located in housing and the first retainer ring and the first rubber seal is provided between hold-down ring and upper port, first retainer ring is located between the first rubber seal and hold-down ring, the outer ring side wall of the first rubber seal is provided with, lower two grooves, the upper surface of the first rubber seal is provided with the groove of annular, the section of the upper groove on the outer ring side wall of the first rubber seal is inverted " 7 " character form structure.Advantage is：Good sealing effect, manufacturing process is extremely simple, and structure is also relatively simple and low cost of manufacture.

Description

Pipe fitting fast joint

Technical field

The utility model is related to the technical field of quickly jointed tubular workpieces, more particularly, to a kind of pipe fitting fast joint.

Background technology

Quickly jointed tubular workpieces are a kind of joints that can realize pipeline high-speed communication or disconnection.Quickly jointed tubular workpieces traditional at present include tool There is the housing that two ports and inner chamber connect with port, to connect end soon, the lower port in housing is provided with pressure for one of port Tight ring, is circumferentially provided with several claws on hold-down ring, shifting up in the lower port of housing acts on the unblock of hold-down ring Sleeve, the upper end for unlocking sleeve can contact with hold-down ring and extrude the claw of hold-down ring to complete unblock.And it is this traditional fast Although jointed tubular workpieces can reach basic use requirement, by long-term use and be chronically at hydraulic pressure it is high in the case of, The leak fluid between upper and lower snap ring and the cavity wall of interface just occurs, causes sealing property to decline, and this product Manufacturing process is complex, and structure is also more numerous and diverse.

The content of the invention

For the deficiency that above-mentioned prior art is present, the purpose of this utility model is to provide a kind of good sealing effect, manufactures Technique is extremely simple, structure also relatively simple and low cost of manufacture pipe fitting fast joint.

To realize above-mentioned purpose, the utility model provides following technical scheme：

A kind of pipe fitting fast joint, including the housing with both ends open, the lower port in housing are provided with hold-down ring, compress Several claws are circumferentially provided with ring, shifting up in the lower port of housing acts on the unblock sleeve of hold-down ring, housing Interior that the first retainer ring and the first rubber seal are provided between hold-down ring and upper port, the first retainer ring is located at the first rubber Between sealing ring and hold-down ring, the outer ring side wall of the first rubber seal is provided with upper and lower two grooves, the first rubber seal Upper surface be provided with the groove of annular, the section of the upper groove on the outer ring side wall of the first rubber seal is inverted " 7 " Character form structure.

The utility model is further arranged to：The inner ring side wall of first rubber seal is provided with from top to bottom successively Upper and lower two extruded segments of connection, upper and lower extruded segment is the expansion neck that internal diameter from top to bottom gradually increases, upper and lower extruded segment Maximum inner diameter and minimum diameter it is equal, form step surface between upper and lower extruded segment.

The utility model is further arranged to：The upper port of the housing from the bottom to top for be sequentially communicated first through hole, The internal diameter of the second through hole, third through-hole, fourth hole, first through hole and third through-hole is gradually reduced from the bottom to top, and second leads to The internal diameter of hole and fourth hole is equal from the bottom to top, and the minimum diameter of first through hole is equal with the internal diameter of the second through hole, and the 3rd The minimum diameter of through hole is equal with the internal diameter of fourth hole, and the maximum inner diameter of third through-hole is equal with the internal diameter of the second through hole；The Annular groove on the upper surface of one rubber seal is in the scope corresponding with first through hole.

The utility model is further arranged to：Between first retainer ring and the first rubber seal from top to bottom successively It is provided with the second retainer ring, the second rubber seal；The internal diameter of the second retainer ring is equal with the maximum inner diameter of the first rubber seal, Maximum inner diameter of the minimum diameter of the second rubber seal not less than the first rubber seal.

The utility model is further arranged to：The outer ring side wall of second rubber seal is provided with least one annular Groove, inner ring side wall be provided with annular projection.

The utility model is further arranged to：The side that the unblock sleeve extends lower port is provided with least two intervals and sets The support chip being uniformly distributed along the circumference put, support chip upper end is provided with spacing preiection laterally, and the lower port of housing is provided with and is limited The raised spacing choke in position；The outside side flanging in port that unblock sleeve is stretched out outside the lower port of housing is formed and is available for finger push-and-pull Turn-up portion, unlock sleeve turn-up portion and the lower port of housing between be provided with prevent malice dismantle locking buckle.

The utility model is further arranged to：The inner ring structure of first retainer ring is first gradually reduced from the bottom to top The equal through hole of horn-like structure, again internal diameter.

The utility model is further arranged to：The housing includes shell body, the inner housing in shell body, inner housing Upper being close to is provided with sealing ring between upper port position and the madial wall of shell body.

The utility model is further arranged to：The inner housing includes upper shell, lower house, the outer ring side of the first retainer ring Wall is provided with annular protrusion, and annular protrusion is located between upper shell and lower house and fixes, and the first of the upper and lower both sides of annular protrusion The outer ring side wall of retainer ring is provided with the draw-in groove of arc, and it is raised that upper and lower casing is provided with the screens matched with the draw-in groove of arc.

The utility model is further arranged to：Protrude to be formed to the center position of hold-down ring in the middle part of the end of the claw The clamping teeth of crescent.

By using above-mentioned technical proposal, the technique effect that the utility model is reached is：By improving the first retainer ring And first rubber seal, will upper and lower two grooves be set on the outer ring side wall of the first rubber seal, the first sealing ring The groove of annular is set on upper surface, and the section of the upper groove on the outer ring side wall of the first rubber seal is set to inverted " 7 " character form structure, and this structure is extremely simple, and manufacture also relatively easy, cost is also extremely low, and along with the first oil Seal, split ring, be tightly connected relation between the second oil sealing and seal mouth ring so that the effect of sealing is also very good.

Brief description of the drawings

The utility model is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is dimensional structure diagram of the present utility model.

Fig. 2 is cross section structure diagram of the present utility model.

Fig. 3 is the structural representation of hold-down ring of the present utility model.

Specific embodiment

Reference picture 1,2,3, is a kind of pipe fitting fast joint disclosed in the utility model, including the shell with both ends open Body, the lower port in housing is provided with hold-down ring 10, several claws 11 is circumferentially provided with hold-down ring 10, in the lower port of housing Shift up the unblock sleeve 12 for acting on hold-down ring 10, be located in housing and first is provided between hold-down ring 10 and upper port consolidates Determine the rubber seal 14 of ring 13 and first, wherein, housing includes shell body 15, the inner housing in shell body 15, inner housing It is upper near sealing ring 16 is provided between upper port position and the madial wall of shell body 15, sealing ring here be prevent water from it is interior, Revealed in gap between shell body, inner housing includes upper shell 17, lower house 18, is set on the outer ring side wall of the first retainer ring 13 There is annular protrusion 19, annular protrusion 19 is located between upper shell 17 and lower house 18 fixed, annular protrusion both sides about 19 The outer ring side wall of the first retainer ring 13 is provided with the draw-in groove of arc, and upper and lower casing 17,18 is provided with and matches with the draw-in groove of arc Screens projection 20；The clamping teeth 21 to form crescent is protruded to the center position of hold-down ring 10 in the middle part of the end of claw 11. Using the clamping teeth of crescent, during clamping, tube wall can be preferably adjacent to, be obviously improved the effect of clamping, together When crescent clamping teeth can effectively prevent the lateral wall of pipe fitting of insertion from avoiding scratch, traditional clamping teeth meeting as far as possible The tube wall for inserting pipe fitting is axially scraped into deep trouth, and the clamping teeth of crescent can reduce this when the lateral wall with pipe fitting is contacted It is a little to damage, even if having scratch to the lateral wall of pipe fitting, the shape of crescent also will be simply scraped on the lateral wall of pipe fitting, so During patching again, the clamping teeth of crescent can be still snapped in the vestige of crescent, still can be good at clamping.

The first retainer ring 13 in above-mentioned is located between the first rubber seal 14 and hold-down ring 10, the first rubber seal 14 outer ring side wall is provided with upper and lower two grooves 22,23, and the upper surface of the first rubber seal 14 is provided with the groove of annular 24, figure (is specifically referred in the section of the upper groove 22 on the outer ring side wall of the first rubber seal 14 for inverted " 7 " character form structure 2).Extruding force laterally of first rubber seal when being inserted by pipe fitting, energy can be effectively improved using this structure Enough enable that the outer ring of the first rubber seal is adjacent to the inwall of housing, and the annular on the upper surface of the first rubber seal Groove be then to enter fashionable from the upper port of housing in water, water can apply certain hydraulic pressure to the groove of annular, in the work of hydraulic pressure Under, the inner ring of the first rubber seal can apply pressure to inside and outside both sides, then inner ring can preferably be adjacent to insertion pipe fitting Lateral wall, used along with the outer ring side wall with the first rubber seal is provided with upper and lower two groove fits so that first The lateral wall of rubber seal can preferably be adjacent to the madial wall of housing so that sealing effectiveness is more notable.

The inner ring side wall of the first rubber seal 14 in the present embodiment is provided with upper and lower two for being from top to bottom sequentially connected Individual extruded segment 25,26, upper and lower extruded segment 25,26 is the expansion neck that internal diameter from top to bottom gradually increases, upper and lower extruded segment 25, 26 maximum inner diameter and minimum diameter is equal, and step surface (specifically referring to Fig. 2) is formed between upper and lower extruded segment 25,26.

In addition, the upper port of housing is from the bottom to top the first through hole 27, the second through hole 28, third through-hole that are sequentially communicated The internal diameter of the 29th, fourth hole 30, first through hole 27 and third through-hole 29 is gradually reduced from the bottom to top, the second through hole 28 and the 4th The internal diameter of through hole 30 is equal from the bottom to top, and the minimum diameter of first through hole 27 is equal with the internal diameter of the second through hole 28, threeway The minimum diameter in hole 29 is equal with the internal diameter of fourth hole 30, the internal diameter phase of the maximum inner diameter of third through-hole 29 and the second through hole 28 Deng；Annular groove 24 on the upper surface of the first rubber seal 14 is in the scope corresponding with first through hole 27.Shell The upper port of body is from the bottom to top four through holes being sequentially communicated, and main purpose is to have very after improving pipe fitting insertion The internal diameter of good guidance quality and sealing, usual first through hole and the second through hole be generally relative to the internal diameter of pipe fitting compared with Greatly, then after third through-hole is entered into, the internal diameter of third through-hole is gradually reduced for the end of pipe fitting, until last clamping pipe fitting Port, ensure that smoothness and accuracy after pipe fitting insertion, the in addition setting of the second through hole and first through hole, Ke Yiyou Effect is improved after water enters from the upper port of housing, there is a good flow direction property, and can to flow to performance enough fine using this The rubber seal of raising first and housing between sealing.

In the present embodiment, second is from top to bottom sequentially provided between the first retainer ring 13 and the first rubber seal 14 to consolidate Determine ring 31, the second rubber seal 32；The internal diameter of the second retainer ring 31 is equal with the maximum inner diameter of the first rubber seal 14, the Maximum inner diameter of the minimum diameter of two rubber seal 32 not less than the first rubber seal 14.Equally, in order to improve sealing Can, the outer ring side wall of the second rubber seal 32 is provided with the groove 33 of at least one annular, inner ring side wall and is provided with annular Raised 34.Wherein, the inner ring structure of the first retainer ring 13 be first be gradually reduced from the bottom to top horn-like structure, again internal diameter it is equal Through hole.Horn-like structure can in order to accommodate hold-down ring, the inner ring of hold-down ring be provided with claw part roll upwards it is oblique, Thus have certain deformation space and elastic force.

The side that unblock sleeve 12 in above-mentioned extends lower port is provided with least two and spaced is uniformly distributed along the circumference Support chip 35, the upper end of support chip 35 is provided with spacing preiection 36 laterally, and the lower port of housing is provided with as spacing preiection 36 is limited The choke 37 of position；The outside side flanging in port that unblock sleeve 12 is stretched out outside the lower port of housing is formed and is available for turning over for finger push-and-pull Edge 38, the locking buckle 39 for preventing malice from dismantling is provided between the turn-up portion 38 and the lower port of housing that unlock sleeve 12. The design of support chip and spacing preiection and choke, primarily to convenient install, installs in the lower port to housing During unblock sleeve, then need to be axially inserted into, now due to the squeezing action of external force so that spacing preiection drives support chip to inner side Incline, can so facilitate spacing preiection and support chip part to clamp-on in the lower port of housing, after clamp-oning, spacing preiection due to The reason for choke, then cannot exit again.

Upper and lower grade term position in above-mentioned is for the knot of the product during convenience is stated and expresses the present embodiment Structure, is not intended as specific limitation, will be upper and lower etc. after orientation exchanges, and the structure of the present embodiment is still adapted to.

Above-described embodiment is only preferred embodiment of the present utility model, and protection model of the present utility model is not limited according to this Enclose, therefore：All equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by protection of the present utility model Within the scope of.

Claims

1. a kind of pipe fitting fast joint, including the housing with both ends open, the lower port in housing is provided with hold-down ring, hold-down ring On be circumferentially provided with several claws, shifting up in the lower port of housing acts on the unblock sleeve of hold-down ring, its feature It is：It is located in housing and the first retainer ring and the first rubber seal is provided between hold-down ring and upper port, the first retainer ring position Between the first rubber seal and hold-down ring, the outer ring side wall of the first rubber seal is provided with upper and lower two grooves, first The upper surface of rubber seal is provided with the groove of annular, and the section of the upper groove on the outer ring side wall of the first rubber seal is Inverted " 7 " character form structure.

2. pipe fitting fast joint according to claim 1, it is characterised in that：The inner ring side wall of first rubber seal Upper and lower two extruded segments being from top to bottom sequentially connected are provided with, upper and lower extruded segment is what internal diameter from top to bottom gradually increased Expand neck, the maximum inner diameter and minimum diameter of upper and lower extruded segment are equal, and step surface is formed between upper and lower extruded segment.

3. pipe fitting fast joint according to claim 1, it is characterised in that：The upper port of the housing be from the bottom to top according to The internal diameter of the first through hole of secondary connection, the second through hole, third through-hole, fourth hole, first through hole and third through-hole by it is lower extremely On be gradually reduced, the internal diameter of the second through hole and fourth hole is equal from the bottom to top, the minimum diameter of first through hole and second logical The internal diameter in hole is equal, and the minimum diameter of third through-hole is equal with the internal diameter of fourth hole, the maximum inner diameter of third through-hole and second The internal diameter of through hole is equal；Annular groove on the upper surface of the first rubber seal is located at the scope corresponding with first through hole It is interior.

4. pipe fitting fast joint according to claim 1, it is characterised in that：First retainer ring and the first rubber seal The second retainer ring, the second rubber seal are from top to bottom sequentially provided between circle；The internal diameter of the second retainer ring is close with the first rubber The maximum inner diameter of seal is equal, the maximum inner diameter of the minimum diameter not less than the first rubber seal of the second rubber seal.

5. pipe fitting fast joint according to claim 4, it is characterised in that：The outer ring side wall of second rubber seal It is provided with the projection that the groove of at least one annular, inner ring side wall are provided with annular.

6. the pipe fitting fast joint according to any one of claim 1 to 5, it is characterised in that：The unblock sleeve is extended down The side of port is provided with least two spaced support chips being uniformly distributed along the circumference, and support chip upper end is provided with spacing laterally Projection, it is the spacing choke of spacing preiection that the lower port of housing is provided with；The end that unblock sleeve is stretched out outside the lower port of housing Outwards side flanging forms the turn-up portion for being available for finger push-and-pull to mouth, is provided between the turn-up portion and the lower port of housing that unlock sleeve The locking buckle for preventing malice from dismantling.

7. the pipe fitting fast joint according to any one of claim 1 to 5, it is characterised in that：First retainer ring it is interior Coil structures are the first horn-like structure being gradually reduced from the bottom to top, the again equal through hole of internal diameter.

8. the pipe fitting fast joint according to any one of claim 1 to 5, it is characterised in that：The housing include shell body, Inner housing in shell body, is close on inner housing and is provided with sealing ring between upper port position and the madial wall of shell body.

9. pipe fitting fast joint according to claim 8, it is characterised in that：The inner housing includes upper shell, lower house, The outer ring side wall of the first retainer ring is provided with annular protrusion, and annular protrusion is located between upper shell and lower house fixed, annular The outer ring side wall of raised first retainer ring of both sides up and down is provided with the draw-in groove of arc, and upper and lower casing is provided with the card with arc The screens that groove matches is raised.

10. the pipe fitting fast joint according to any one of claim 1 to 5, it is characterised in that：In the end of the claw The clamping teeth to form crescent is protruded to the center position of hold-down ring in portion.