Pipe connector

This invention relates to a pipe connector comprising: a main connecting pipe formed with an inverted conical surface at the upper edge, a threaded portion at the upper side, and a raised annular portion below the threaded portion; a leak-proof gasket mounted in the inner side of the raised annular portion of the main connecting pipe; a locking nut provided with internal threads and a stop edge having a conical surface opposite to the inverted conical surface of the main connecting pipe; a split ring disposed between the locking nut and the inverted conical surface of the main connecting pipe; and a connecting pipe inserted into the main connecting pipe through the locking nut; whereby two pipes can be easily connected together and no fluid can leak out thereof.

BACKGROUND OF THE INVENTION 
It has been found that the prior art pipe connectors on the market are 
unsatisfactory in use and have a lot of drawbacks. FIG. 1 shows a widely 
used prior art pipe connector on the market. As illustrated, a pipe A1 is 
connected with a three-way pipe connector A2 which is provided with a 
threaded sleeve A21 for engaging with a nut A3. The pipe A1 is designed to 
be inserted into the sleeve A21 and there is a packing A4 the pipe A1 and 
the sleeve A21. Further, the pipe A1 is provided with a gasket A5 and a 
packing A6. However, such connection cannot provide reliable leak-proof 
capability and is short in service life. 
Therefore, it is an object of the present invention to provide an improved 
pipe connector which may obviate and mitigate the above-mentioned 
drawbacks. 
SUMMARY OF THE INVENTION 
This invention relates to an improved pipe connector. 
It is the primary object of the present invention to provide a pipe 
connector which can firmly connect two pipes together. 
It is another object of the present invention to provide a pipe connector 
which can prevent the fluid from leaking out thereof. 
It is still another object of the present invention to provide a pipe 
connector which is easy to operate. 
It is still another object of the present invention to provide a pipe 
connector which is simple in construction. 
It is a further object of the present invention to provide a pipe connector 
which is economic to produce. 
The other objects and merits and a fuller understanding of the present 
invention will be obtained by those having ordinary skill in the art when 
the following detailed description is read in conjunction with the 
accompanying drawings wherein like numerals refer to like or similar part.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Before explaining the present invention in detail, it is to be understood 
that the invention is not limited in its application to the details of 
construction and arrangement of parts illustrated in the accompanying 
drawings, since the invention is capable of other embodiments and of being 
practiced or carried out in various ways. Also it is to be understood that 
the phraseology or terminology employed herein is for the purpose of 
description and not of limitation. 
With reference to the drawings and in particular to FIGS. 2 and 3 thereof, 
the present invention mainly comprises a locking nut 1, a split ring 2, a 
leak-proof gasket 3, and a main connecting pipe 4. The main connecting 
pipe 4 is formed with an inverted conical surface 40 at the upper edge, a 
threaded portion 41 at the upper side, and a raised annular portion 42 
below the threaded portion 41. The leak-peak gasket 3 is mounted in the 
inner side of the annular portion 42, while the split ring 2 is disposed 
between the locking nut 1 and the inverted conical surface 40 of the main 
connecting pipe 4 so that the connecting pipe 5 is firmly kept in a fixed 
position and completely sealed. 
As shown in FIG. 3, the locking nut 1 is provided with internal threads 11 
and a stop edge 12. The stop edge 12 has a conical surface 13 opposite to 
the inverted conical surface 40 of the main connecting pipe 4. The split 
ring 2 is formed with an upper conical edge, a lower conical edge, a slit 
21, and a plurality of internal threads 22. When the locking nut 1 is 
engaged with the main connecting pipe 4, the locking nut 1 will compress 
the split ring 2 thereby causing the threads 22 of the split ring 2 to 
grasp the outer surface of the connecting pipe 5 and therefore, firmly 
joining the main connecting pipe 4 and the connecting pipe 5 together. 
Further, the locking nut 1 is provided with a hole 14 having a conical 
edge. The hole 14 has a diameter slightly smaller than that of the annular 
portion 42 of the main connecting pipe 4 so that when the locking nut 1 is 
engaged with the main connecting pipe 4, the hole 14 will compress the 
annular portion 42 of the main connecting pipe 4 thereby pressing the 
leak-proof gasket 3 against the outer wall of the connecting pipe 5. 
Looking now at FIG. 5, the leak-proof gasket 3 is formed with three annular 
members with diameters A, B, and C. The diameter A is larger than the 
diameter B and the diameter B is larger than the diameter C. As the 
leak-proof gasket 3 is compressed, the three annular members will become 
three leak-proof members hence enhancing the leak-proof capability of the 
gasket 3. 
The invention is naturally not limited in any sense to the particular 
features specified in the forgoing or to the details of the particular 
embodiment which has been chosen in order to illustrate the invention. 
Consideration can be given to all kinds of variants of the particular 
embodiment which has been described by way of example and of its 
constituent elements without thereby departing from the scope of the 
invention. This invention accordingly includes all the means constituting 
technical equivalents of the means described as well as their 
combinations.