Patent Publication Number: US-2004046386-A1

Title: Joint device in a pipeline

Description:
BACKGROUND OF THE INVENTION  
       [0001] 1. Field of the Invention  
       [0002] The present invention relates to a joint device in a pipeline and in particular to an improved structure with regard to a joint in a pipeline.  
       [0003] 2. Description of Related Art  
       [0004] The conventional equipment such as an automobile engine, an oil pumping machine and so on usually have mounted with oil pipes, which include flexible hoses and metal pipes connecting with each other. While the flexible hoses connecting with the metal pipes by way of connecting ends of the metal pipes fitting with the hoses is easily performed, it is liable to loosen and fall apart. Although a connecting joint is used for securing the connection between a metal pipe and a flexible hose, the connecting joint has a complicate structure to result in extremely inconvenient connection job. Especially, when two metal pipes are connected to each other, it may cause connection problem in case of the two pipes being not aligned with each other.  
       SUMMARY OF THE INVENTION  
       [0005] The crux of the present invention is in that a joint device in a pipeline includes a connecting body, a joining screw nut, a connecting joint and two fixing coils. The connecting body has a connecting pipe with an end thereof being a connector and another end thereof being another connector. The first connector is provided with an annular recess and the second connector has at least two annular recesses. The joining screw nut at an end thereof is provided with internal threads and at another end thereof has a radial hole and is used for engaging with the first connector. The connecting joint at an end thereof has a radial hole corresponding to one of the annular recess on the second connector and extends outward a screw rod portion with a conical end. One of fixing coils is inserted into the annular recess on the first connector via the radial hole of the joining screw nut and the other fixing coil is inserted into one of the annular recesses on the second connector via the radial hole of the connecting joint. Hence, the pipeline can be connected and direction-adjusted easily in spite of the space limitation.  
       [0006] Accordingly, a main object of the present invention is to provide a joint device in pipeline, which has fixing coil inserted therein so that the joint device is able to connect with the pipelines with facility even if only a limited space is available.  
       [0007] Another object of the present invention to provide a joint device in a pipeline, in which the connecting pipe of the connecting body can be a metal flexible pipe, so that it is possible to obtain advantages such as shockproof and being easily bent for performing connecting job. 
     
    
    
     BRIEF DESCRIPTION OF DRAWINGS  
     [0008]FIG. 1 is a perspective view of a joint device in a pipeline according to the present invention.  
     [0009]FIG. 2 is an exploded perspective view of the joint device shown in FIG. 1.  
     [0010]FIG. 3 is a sectional view of the joint device shown in FIG. 1.  
     [0011]FIG. 4 is a perspective view of another embodiment of the joint device of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
     [0012] Firstly, please referring to FIGS. 1, 2 and  3 , a joint device in a pipeline of the present invention includes a joining screw nut  10 , a connecting body  20 , a joint  30  and an engaging screw cap  40 .  
     [0013] The joining screw nut  10  at an end thereof is provided with internal threads  11  and at another end thereof has a radial hole  13  for being passed though with a fixing coil  12  so that the fixing coil  12  can be fixedly attached to the connecting body  20 .  
     [0014] The connecting body  20  basically has a connecting pipe  21  with an end thereof being a connector  22  and another end thereof being a connector  24 . The connector  22  is provided with an annular recess  23  corresponding to the radial hole  13  and the connector  24  has at least two annular recesses  25 ,  26  for fitting with an “O” ring  27  and a fixing coil  32 .  
     [0015] The connecting joint  30  at an end thereof has a radial hole  31  corresponding to the annular recess  23  on the joint  24  for being passed through by the fixing coil  32  and toward the other end thereof extends a screw rod portion  33  with a conical end edge  331 .  
     [0016] The engaging screw cap  40  provides internal threads for being fastened to the connecting joint  30 .  
     [0017] In practice, the joining screw nut  10  is engaged to a pipeline to be connected and the fixing coil  12  is inserted into the annular recess  23  on the joining body  20  via the radial hole  13  of the joining screw nut  10  so that the joining screw nut  10  can be connected to the pipeline. Then, the fixing coil  32  is inserted into the annular recess  25  on the joining body  20  via the radial hole  31  of the connecting joint  30  so that the connector  24  can be connected to another pipeline. With the connecting joint of the present invention, the pipeline can be connected and direction-adjusted easily in spite of the space limitation.  
     [0018] Next, referring to FIG. 4, another preferred embodiment of the present invention is illustrated. It can be seen that the connecting pipe  21  of the connecting body  20  is a metal flexible pipe instead. The flexible connecting pipe  21  has advantages of shockproof and being bent easily for fabrication.  
     [0019] It is appreciated that the connecting joint disclosed in the present invention provides fixing coils being inserted into annular recesses arranged at the screw nut and the screw cap at both ends of the connecting body via radial holes to ease the pipeline connection and direction adjustment even if the available space for mounting the pipeline is very limited.  
     [0020] While the present invention herein disclosed has been described by means of specific embodiments and applications thereof, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope of the present invention set forth in the claims.