CN102182889A

CN102182889A - Portable pipe joint

Info

Publication number: CN102182889A
Application number: CN 201110123056
Authority: CN
Inventors: 周明江
Original assignee: FANG COUNTY QIYANG INDUSTRY TRADE Co Ltd
Current assignee: FANG COUNTY QIYANG INDUSTRY TRADE Co Ltd
Priority date: 2011-05-13
Filing date: 2011-05-13
Publication date: 2011-09-14

Abstract

The invention provides a portable pipe joint. Four stages of stepped countersunk holes which are decreasing from the outside to inside are arranged at one end of a pipe joint body, a bush is pressed in the first stage of countersunk hole, the third stage of countersunk hole is internally provided with a rubber seal ring of which inner bore is a taper hole, and the fourth stage of countersunk hole is provided with a limit check ring of the rubber seal ring; one end of a jacket is provided with a horn-shaped opening, a plurality of axial grooves extend inwards from the horn-shaped opening and are uniformly distributed on the periphery, the outer diameter of the bush, the inner diameter of the second stage of countersunk hole, the large end of the taper hole of the rubber seal ring and the inner bore of the jacket correspond to the outer diameter of a nylon tube to be connected, a section of taper hole is arranged at the inner bore corresponding to the horn opening on the jacket; the jacket is sleeved with a pressing sleeve which is pressed in the fourth stage of countersunk hole, the end of the pressing sleeve pushes against the limit check ring. According to the invention, the nylon tube can be connected by directly inserting in the joint, the potable pipe joint has good tightness, can avoid air leakage can greatly improve the assembling efficiency and can reduce the rotating space needed when a wrench is used for screwing up in current assembly.

Description

The portable type pipe joint

Technical field

The present invention relates to a kind of pipe joint, can insert directly especially that nylon tube realize to connect the portable type pipe joint.

Background technique

The Placement of traditional pipe joint can't satisfy automobile brake to bubble-tight requirement, it is the pressure that utilizes nut, making the inner conical surface of lining on the nylon tube and pipe joint combine closely realizes sealing just realizing sealing by combining closely between two metal coverings.The defective that exists is: because the machining error of junction plane unavoidably reaches the braking pressure height, have gas leak phenomenon; Be difficult for arranging (need reserve the spanner space); Efficiency of assembling is low.

Summary of the invention

For fear of gas leak phenomenon, improve efficiency of assembling, be convenient to line arrangement, the present invention proposes the portable type pipe joint.

For this reason, technological scheme of the present invention is: the portable type pipe joint, comprise the pipe joint body, and it is characterized in that: the connecting end at pipe joint body and nylon tube is provided with the ladder counterbore; The ladder counterbore is divided into level Four, and the internal diameter of level Four ladder counterbore outside in successively decreases, and outwards is first order counterbore, second level counterbore, third level counterbore, fourth stage counterbore from the lining; The inner of a lining is a flared end, and lining is fitted in the first order counterbore by flared end, and lining extends outwardly into the end of pipe joint body, and the internal diameter of the external diameter of lining and nylon tube to be connected is corresponding; The external diameter of the internal diameter of second level counterbore and nylon tube to be connected is corresponding, in the third level counterbore rubber seal is housed, and the endoporus of rubber seal is that tapering is 12～15 ° a taper hole, and the external diameter of the big end of taper hole and nylon tube to be connected is corresponding; The spacing back-up ring of rubber seal is housed in fourth stage counterbore; One end band horn mouth of a chuck, extend internally from horn mouth and to be laid with a plurality of axial grooves at circumference, the external diameter of the endoporus of chuck and nylon tube to be connected is corresponding, be provided with one section taper hole at the endoporus place corresponding with horn mouth, the small end of taper hole is littler 0.3～0.5 millimeter than the external diameter of nylon tube to be connected; Be with gland on the chuck, the endoporus of gland and the excircle of chuck adapt, and gland is fitted in fourth stage counterbore, and the end roof pressure of gland is on spacing back-up ring.

Beneficial effect: use when of the present invention, nylon tube directly inserts and just can clamp, utilize the external diameter of nylon tube to realize clamping with the endoporus of rubber seal and the contacting of endoporus of gland, continuous rising along with air pressure, the applying of rubber parts and nylon tube and pipe joint inwall is tightr, and chuck has the trend of outside motion, under the restriction of gland, the endoporus of chuck shrinks, tighter the nylon pipe clamp; In the time of need taking off nylon tube, press chuck from outside to inside, the horn mouth of chuck and gland sky are opened, and chuck opens, and just can take out nylon tube.Good airproof performance of the present invention can solve gas leak phenomenon, connects owing to directly insert, can increase substantially efficiency of assembling, reduce the present assembling required revolution space that need screw up with a wrench, thereby make that the layout of whole automobile chassis system pipeline is more reasonable, compactness.

Description of drawings

Fig. 1 is the structural representation of portable type pipe joint.

Embodiment

Portable type pipe joint as shown in Figure 1 comprises pipe joint body 1, is provided with the ladder counterbore at the connecting end 1a of pipe joint body and nylon tube; The ladder counterbore is divided into level Four, and the internal diameter of level Four ladder counterbore outside in successively decreases, and outwards is first order counterbore, second level counterbore, third level counterbore, fourth stage counterbore from the lining; The inner of a lining 2 is flared end 2a, and lining 2 is fitted in the first order counterbore by flared end, and lining extends outwardly into the end of pipe joint body, and the internal diameter of the external diameter of lining 2 and nylon tube to be connected is corresponding; The external diameter of the internal diameter of second level counterbore and nylon tube to be connected is corresponding, and rubber seal 3 is housed in third level counterbore, and the endoporus 3a of rubber seal is that tapering is 12～15 ° a taper hole, and the external diameter of the big end of taper hole and nylon tube to be connected is corresponding; The spacing back-up ring 4 of rubber seal is housed in fourth stage counterbore; One end band horn mouth of a chuck 6, extend internally from horn mouth and to be laid with a plurality of axial groove 6b at circumference, the external diameter of the endoporus of chuck and nylon tube to be connected is corresponding, be provided with one section taper hole 6a at the endoporus place corresponding with horn mouth, the small end of taper hole 6a is littler 0.3～0.5 millimeter than the external diameter of nylon tube to be connected; Be with gland 5 on the chuck, the endoporus of gland and the excircle of chuck adapt, and gland 5 is fitted in fourth stage counterbore, and 5 end roof pressures of gland are on spacing back-up ring 4.

As shown in Figure 1, be a kind of structural representation of two siphunculus joint.The present invention is not limited to the two siphunculus joint, as long as be provided with linkage structure shown in Figure 1 at the connecting end of pipe joint body and nylon tube, all should drop on protection scope of the present invention.

Claims

1. the portable type pipe joint comprises the pipe joint body, it is characterized in that: the connecting end at pipe joint body and nylon tube is provided with the ladder counterbore; The ladder counterbore is divided into level Four, and the internal diameter of level Four ladder counterbore outside in successively decreases, and outwards is first order counterbore, second level counterbore, third level counterbore, fourth stage counterbore from the lining; The inner of a lining is a flared end, and lining is fitted in the first order counterbore by flared end, and lining extends outwardly into the end of pipe joint body, and the internal diameter of the external diameter of lining and nylon tube to be connected is corresponding; The external diameter of the internal diameter of second level counterbore and nylon tube to be connected is corresponding, in the third level counterbore rubber seal is housed, and the endoporus of rubber seal is that tapering is 12～15 ° a taper hole, and the external diameter of the big end of taper hole and nylon tube to be connected is corresponding; The spacing back-up ring of rubber seal is housed in fourth stage counterbore; One end band horn mouth of a chuck, extend internally from horn mouth and to be laid with a plurality of axial grooves at circumference, the external diameter of the endoporus of chuck and nylon tube to be connected is corresponding, be provided with one section taper hole at the endoporus place corresponding with horn mouth, the small end of taper hole is littler 0.3～0.5 millimeter than the external diameter of nylon tube to be connected; Be with gland on the chuck, the endoporus of gland and the excircle of chuck adapt, and gland is fitted in fourth stage counterbore, and the end roof pressure of gland is on spacing back-up ring.