CN202195208U

CN202195208U - Quick connector of plug tube

Info

Publication number: CN202195208U
Application number: CN2011201224976U
Authority: CN
Inventors: 乔坤; 黎新
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2012-04-18
Anticipated expiration: 2021-04-25

Abstract

The utility model provides a quick connector of a plug tube, which structurally comprises a connector body. Four step holes which are bigger and bigger in size are sequentially arranged in the connector body, and the connector body is respectively provided with a lining, a V-shaped sealing ring and a support ring. The lining is fixedly in welding mode, the upper end face of the support ring abuts against the lower end face of the V-shaped sealing ring, a fixing ring is arranged under the support ring, two O-shaped sealing rings with different sizes are respectively arranged on the inside and the outside of the fixing ring, a clamping ring is arranged under the fixing ring, the press ring is arranged under the clamping ring, and a plastic tube is inserted in the connector body and clamped by utilizing elasticity of the clamping ring. Compared with the prior art, the quick connector can achieve quick plug and pull of the connector (and bodies with similar structure) and a pipeline in an automobile pipeline circulation system and has the advantages of being reasonable in design, simple in structure, good in sealing effect, high in pressure resistance, firm in connection, vibration resistant, safe, reliable and the like, thereby being capable of being used in different environments and work conditions.

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, and working medium relates to gas and liquid.

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, and it has occupied crucial status in chassis braking system and steering system; Wherein the good of pipe joint is the important indicator of the whole vehicle safety of influence, and what generally adopt in the present commercial car system at home all is regular screw threads jointing type pipe joint, promptly is commonly called as " three-piece "; It is made up of joint body, gland nut, lining and fixed cover, when assembling, need lining, fixed cover and plastic tube be pre-assembled the gland nut of packing into then; Gland nut is connected with joint body, this pipe seal only depends on the rigidity conical surface seal between fixed cover and the joint body, after after a while again; Screw thread takes place loosening, causes poorly sealed gas leakage easily, so need frequent fastening gland nut; Simultaneously, this technology assembling is complicated, and efficiency of assembling is low; Labor intensity is big, is subject to the assembly space restriction.Also there is a kind of quick inserting joint in existing technology; It is made up of fittings body, male connector, snap ring, swivel nut, different in nature seal ring; It is to be parent with the fittings body, and different in nature seal ring is put into fittings body, puts into snap ring then; Screw in fittings body with the swivel nut that has seal ring, insert in the fittings body after male connector is connected nylon tube.This technology only can realize inserting soon but can not realize pulling out soon, and nylon tube is connected very complicated with male connector simultaneously, and sealing is poor.Above technical deficiency part all is the sealing problems that fundamentally do not solve pipe joint, and complex structure, and efficiency of assembling is low, and processing cost is high, and vibration resistance, reliability and anti-performance of operating condition are all lower, and the user changes relatively difficulty.

Summary of the invention

The purpose of the utility model is to provide a kind of novel fast insert-pull pipe joint; Utilize air pressure selfsealings principle, adopt V-shaped seal ring and O RunddichtringO double-layer sealing structure, fundamentally solve the deficiency on the existing technology; Thoroughly solve the three leakage problems that existing pipe joint exists (gas leakage, leakage of oil, leak); Increase working pressure of pipeline, change the fit of existing automobile pipeline simultaneously, nylon tube is inserted gently the assembling that can realize nylon tube and joint in the fittings body; Improve the assembling work efficient of automobile pipe-line system, saved human cost.The fast insert-pull process can guarantee the insertion of pipe repeated multiple times or extract.Effectively solve the predicament that the terminal use can't change joint voluntarily; Simultaneously this technical products good airproof performance, withstand voltage height, be connected firmly, safety, antivibration, reliability is high; Different operating modes under the suitable varying environment, and assembling simply do not receive spatial limitation, reduced the car load overall cost.

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

A kind of fast insert-pull pipe joint comprises joint body 1, lining 2, V-shaped seal ring 3, support ring 4, outer O type circle 5, interior O type circle 6, retaining ring 7, hold-down ring 8 and snap ring 9 compositions.It is characterized in that first endoporus 13, second endoporus 14, the 3rd endoporus 15, the 4th endoporus 16 are arranged in the said joint body successively; Lining 2 is hollow cylinders; V-shaped seal ring 3 is ring bodies, is respectively arranged with first conical surface 31, second conical surface 32, the 3rd conical surface 33, the 4th conical surface 34; Retaining ring 7 is ring bodies, is provided with first step 71, second step 72, the 3rd step 73, and wherein the bottom outside wall of the 3rd step 73 is a male cone (strobilus masculinus) 74; Hold-down ring 8 is hollow cylinders, and the cylindrical body top inner surface has step 81 in, and inner conical surface 82 is arranged at interior step 81 bottoms, and a ring shaped step 83 is arranged at the cylindrical body bottom, and the cylindrical body outer surface has conelet face 84; Snap ring 9 is hollow cylinders; The cylindrical body top tops bar 91; The inner side surface of topping bar is the last conical surface 92, and the step lower surface is the following conical surface 93, and the cylindrical body outer surface has the outer conical surface 94 down; One protruding circular ring 95 is arranged at the outer conical surface 94 bottoms down, from the top to cylindrical body 2/3 6-10 equally distributed opening slot 96 is arranged; Lining 2 is contained in fittings body 1 first endoporus 13 places; V-shaped seal ring 3 is contained in fittings body 1 second endoporus 14 places, and support ring 4 is contained in fittings body 1 the 3rd endoporus 15 places, and outer O type circle 5 is contained in retaining ring 7 first steps 71 places; Interior O type circle 6 is contained in retaining ring 7 second steps 72 places; Retaining ring 7 is contained in fittings body 1 the 4th endoporus 16 places, and snap ring 9 is assembled together with hold-down ring 8, and wherein the outer conical surface 94 down of snap ring 9 matches with the inner conical surface 82 of hold-down ring 8; Then snap ring 9 is packed in the fittings body 1 with hold-down ring 8, hold-down ring 8 tops contact with the 3rd step 73 of retaining ring 7.Plastic tube 10 directly inserts second endoporus, 14 places in the fittings body 1.The male cone (strobilus masculinus) angle of said snap ring 9 is 30 °-49 °, and said hold-down ring 8 inner conical surface angles are 30 °-49 °.The front end of said joint body 1 is tapered thread or regular screw threads 11.

Description of drawings

Below in conjunction with accompanying drawing and embodiment 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 joint body of fast insert-pull pipe joint;

Fig. 3 is a kind of structural front view of retaining ring of fast insert-pull pipe joint;

Fig. 4 is a kind of structural front view of V-shaped seal ring of fast insert-pull pipe joint;

Fig. 5 is a kind of structural front view of hold-down ring of fast insert-pull pipe joint

Fig. 6 is a kind of structural front view of snap ring of fast insert-pull pipe joint;

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

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

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, but not as the qualification to the utility model.Provide a most preferred embodiment below:

Shown in accompanying drawing 1, a kind of fast insert-pull pipe joint comprises pipe joint body 1; First endoporus 13, second endoporus 14, the 3rd endoporus 15, the 4th endoporus 16 are arranged in the said pipe joint body 1 successively; Lining 2, V-shaped seal ring 3, support ring 4 are set respectively, and said lining 2 adopts welding fixing with joint body 1, and the lower end surface of V-shaped seal ring 3 is withstood in the upper-end surface of said support ring 4; The below of said support ring 4 is provided with retaining ring 7; O RunddichtringO 6 and outer O RunddichtringO 5 in the inside and outside step hole place of retaining ring 7 is provided with respectively, retaining ring 7 belows are provided with snap ring 9 and hold-down ring 8, and hold-down ring 8 contacts fixing with the interior male cone (strobilus masculinus) of snap ring 9 employings.

Between described lining 2, V-shaped seal ring 3 and snap ring 9, the gap that holds nylon tube is arranged.Retaining ring 7 is assemblied in and utilizes hold-down ring 8 fixing in the body; Utilize both conical surfaces to fix between snap ring 9 and the hold-down ring 8; And the conical surface 74 tops contact with snap ring inner conical surface 92 under the retaining ring, adopt between last hold-down ring male cone (strobilus masculinus) 84 and this body cone of pipe joint 12 to be press-fitted encapsulation.

Said lining 2 is contained in fittings body 1 first endoporus 13 places; Main plaing a part led and supports, and V-shaped seal ring 3 installs to joint 1 second endoporus 14 places, after gas or liquid get into the V-type groove; Utilize the selfsealings principle under pressure, V-shaped seal ring plays the effect of sealing to the both sides extruding.Support ring 4 installs to fittings body 1 the 3rd endoporus 15 places, plays the effect of supporting V-shaped seal ring; Outer O RunddichtringO 5 and interior O RunddichtringO 6 install to the first step 71 and second step 72 places of retaining ring 7 respectively, play secondary seal and dust-tight effect.Snap ring 9 is packed in the hold-down ring 8, then snap ring is packed in the fittings body with hold-down ring, and snap ring is locked plastic tube with hold-down ring.At first plastic tube 10 is inserted in the snap ring 9 in use, the inner conical surface of snap ring 9 will contact with the following conical surface 74 of retaining ring under thrust, and retaining ring 7 will make snap ring 9 opened with certain angle; Plastic tube will be inserted into fittings body interior step 14 places always; Under the pretightening force effect, the tapered tooth of snap ring is automatically with plastic tube locking, when plastic tube 10 outwards moves under external force; Snap ring 9 and the hold-down ring 8 one generation contractile force that works, plastic tube 10 is tightly locked.During plastic tube, forward touch snap ring 9 with extracting tool in dismounting, make the inner conical surface 92 of snap ring withstand the following conical surface 74 of retaining ring, let snap ring 9 opened with certain angle, can extract plastic tube 10 fast out this moment.

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

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

Claims

1. fast insert-pull pipe joint; Comprise joint body (1), lining (2), V-shaped seal ring (3), support ring (4), outer O type circle (5), interior O type circle (6), retaining ring (7), hold-down ring (8) and snap ring (9) composition; It is characterized in that first endoporus (13), second endoporus (14), the 3rd endoporus (15), the 4th endoporus (16) are arranged in the said joint body successively; Lining (2) is a hollow cylinder; V-shaped seal ring (3) is a ring bodies, is respectively arranged with first conical surface (31), second conical surface (32), the 3rd conical surface (33), the 4th conical surface (34); Retaining ring (7) is a ring bodies, is provided with first step (71), second step (72), the 3rd step (73), and wherein the bottom outside wall of the 3rd step (73) is male cone (strobilus masculinus) (74); Hold-down ring (8) is a hollow cylinder, and the cylindrical body top inner surface has step (81) in, and inner conical surface (82) is arranged at interior step (81) bottom, and a ring shaped step (83) is arranged at the cylindrical body bottom, and the cylindrical body outer surface has the little conical surface (84); Snap ring (9) is a hollow cylinder; Cylindrical body top top bar (91); The inner side surface of topping bar is the last conical surface (92), and the step lower surface is the following conical surface (93), and the cylindrical body outer surface has the outer conical surface (94) down; One protruding circular ring (95) is arranged at the outer conical surface (94) bottom down, from the top to cylindrical body 2/3 6-10 equally distributed opening slot (96) is arranged; Lining (2) is contained in fittings body (1) first endoporus (13) and locates; V-shaped seal ring (3) is contained in fittings body (1) second endoporus (14) and locates; Support ring (4) is contained in fittings body (1) the 3rd endoporus (15) and locates; Outer O type circle (5) is contained in retaining ring (7) first step (71) and locates; Interior O type circle (6) is contained in retaining ring (7) second step (72) and locates, and retaining ring (7) is contained in fittings body (1) the 4th endoporus (16) and locates, and snap ring (9) is assembled together with hold-down ring (8); Wherein the outer conical surface (94) down of snap ring (9) matches with the inner conical surface (82) of hold-down ring (8); Then snap ring (9) is packed in the fittings body (1) with hold-down ring (8), hold-down ring (8) top contacts with the 3rd step (73) of retaining ring (7), and second endoporus (14) that plastic tube (10) directly inserts in the fittings body (1) is located.

2. a kind of fast insert-pull pipe joint according to claim 1 is characterized in that, the male cone (strobilus masculinus) angle of said snap ring (9) is 30 °-49 °, and said hold-down ring (8) inner conical surface angle is 30 °-49 °.

3. a kind of fast insert-pull pipe joint according to claim 1 is characterized in that, the front end of said joint body (1) is tapered thread or regular screw threads (11).