CN2649845Y

CN2649845Y - Pipe joint structure

Info

Publication number: CN2649845Y
Application number: CN 200320116660
Authority: CN
Inventors: 郑日祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-05
Filing date: 2003-11-05
Publication date: 2004-10-20
Anticipated expiration: 2013-11-05

Abstract

A pipe joint structure is provided and comprises a pipe body and a pipe joint that connects the pipe body. External screw threads are arranged at the connecting part of the pipe joint. Inward raised dots or line segments that are matched with the external screw threads on the pipe joint are evenly arranged on the internal side of the pipe body. The raised dots or line segments are located in the vale of the pipe joint screw threads and can be meshed with the screw threads. When produced, the utility model adopts mould extruding or punching to produce on the thin pipe wall 'internal screw threads' consisting of the raised dots or line segments that are matched with the external screw threads on the pipe joint. As the mould extruding is even, the ends of the pipe body and the pipe body have the same size. Compared with traditional lathed or tapped tooth, the utility model is simple in processing so that production efficiency is greatly improved while cost is greatly reduced. Intensity of the product is guaranteed; at the same time, pipe material consumption is greatly decreased. Thus, product cost is furtherly reduced and product design is optimized.

Description

A kind of pipe joint structure

Technical field

The utility model relates to a kind of pipe joint structure, is meant a kind of threaded coupling structure of the thin walled tube that is used to support especially.

Background technique

In use all there is the problem that interconnects of tubing termination in all kinds of tubing.Can adopt bonding way during connection, this is used in the heavy caliber nonmetallic material pipe morely; For metal tube, small-bore nonmetallic pipe, then many employings are welded and are threaded.When being threaded, can adopt the tubing termination is internal thread, and the tubing termination that matches is that outside thread is the Placement of yin-yang match; Perhaps, the tubing termination is an internal thread, and other establishes a pipe joint that two bodys are engaged togather, and the two ends of pipe joint are outside thread, reaches the purpose of extending or turning to thus; At this moment pipe joint can be in-line, L shaped, T shape, cross or other multidirectional form.But in the process that the double thread linkage structure is processed, have many insoluble realistic problems: owing to must carry out screw thread processing to the tubing termination, therefore the thickness to tube wall just has certain requirement, otherwise can't guarantee join strength and working life, but the increase of thickness had both improved the cost of product, made product become clumsy again and had lost anima; So when tube wall is thin when being unsuitable for machining screw, structure at mouth of pipe assembling nut has appearred, nut and mouth of pipe interference fit, though at this moment bulk strength meets the requirements, but manufacturing procedure is many, complex process degree height, as the pipe joint of Chinese ZL02268275.9 patent " steel-plastic composite pipe joint " description.From the Chinese patent open source literature of retrieving relevant pipe joint as seen, the pipe joint of being discussed relates to liquid transmission line more, as Chinese ZL02242240.4 patent " steel-plastic pipe union ", and the then rare discussion of connection of conventional support tube.

Summary of the invention

The purpose of this utility model provides the threaded coupling structure of the thin walled tube of a kind of conventional supporting effect.

Designed a kind of pipe joint according to above-mentioned purpose, the pipe joint that comprises body, body is linked together, the connecting part of pipe joint is an outside thread, the inboard of body mouth evenly be provided with pipe joint on the inside salient point that is complementary of outside thread or inside convex line section.Described each salient point or convex line section are positioned at the Luo Gu position of pipe joint screw thread, can with the threaded engagement of pipe joint.

During production, the method that the utility model adopts the mould extruding make on the thin walled tube with pipe joint on supporting " internal thread " formed by salient point or convex line section of outside thread, owing to utilize mould to push equably, therefore guaranteed body end and body conformity dimensionally, compare with traditional car tooth or tapping or interior cover nut processing method simply, manufacturing efficiency increases substantially, cost is low; When guaranteeing product strength, can alleviate the raw-material consumption of tubing greatly, further reduced cost of goods manufactured, optimized product specification.

Description of drawings

Accompanying drawing 1 is that the complete section master after the utility model assembling looks enlarged diagram;

Accompanying drawing 2 is component decomposing schematic representations of accompanying drawing 1;

Accompanying drawing 3 is that the utility model screw thread is the body schematic representation of convex line section.

Specific embodiments

With reference to accompanying drawing.The utility model be the pipe joint 2 that adopts can be in-line, L shaped, T shape, cross or other multidirectional can with the body 1 supporting shape that is connected, its main key points in design is through punching press or extruding and form a plurality of to projecting inward salient point or convex line section 11 in the inboard of body mouth, the position of each salient point or convex line section is positioned at the Luo Guchu of the screw thread 21 of pipe joint just, promptly utilize salient point or convex line section to replace internal thread, make body and pipe joint salient point or convex line and the good engagement of screw thread realization when screwing togather.

Adopt said structure, can make between body and the pipe joint and lock the externally threaded Luo Gu of engage thread, body is firmly combined with screw-in version with pipe joint salient point or convex line section embedding pipe joint screwing part to revolve.Because the salient point of body inboard or convex line section are the inwalls that is arranged at body in the mode of point or line segment, to the pipe thickness did not influence of body, so the bulk strength and the twisting resistance of body also do not had influence; Moreover the salient point of body mouth inboard or convex line section are to form through punching press or extruding, than the processing of traditional tapping or car silk or by overlapping nut in the interference fit, not only simplify but also rapid and low-cost.

Claims

1, a kind of pipe joint structure, the pipe joint (2) that comprises body (1), body is linked together, the connecting part of pipe joint is outside thread (21), it is characterized in that: the inboard of body mouth evenly be provided with pipe joint on the inside salient point (11) that is complementary of outside thread or inside convex line section.

2, pipe joint according to claim 1 is characterized in that described each salient point or convex line section are positioned at the Luo Gu position of pipe joint screw thread, can with the threaded engagement of pipe joint.