Abstract:
An iron pipe furniture assembly structure employs a pipe connector as a connection construction component for connecting a supporting shaft and a pipe element. The assembly utilizes an elongated round-shaped fastening shaft of the pipe connector for connecting the pipe element. The pipe element is connected to the fastening shaft via an insertion cork of the pipe element. Embedded ribs on the insertion cork engage embedded grooves on the fastening shaft to secure the pipe element to the pipe connector. A tool engages a groove in the pipe element to rotate the pipe element to cause the embedded ribs to engage and disengage with the embedded grooves.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an iron pipe furniture assembly structure, and more particularly to a structural design where a pipe connector and the pipe element through a socket construction so that the assembly operation of the pipe element and the pipe connector can be easily and speedily completed with certain simple insertion and spiral actions without using any bolts and nuts for fastening. Not simply easier and faster operation, the absence of bolts and nuts gives it a much nicer looking, thereby resolved the problems and shortcomings of the conventional structure and achieved best utilization value and practicality of the industry. 
     2. Description of the Related Art 
     In general, conventional iron pipe furniture usually uses welding to assemble the pipe elements and supporting shafts to form a fixed furniture structure, and because its production requires experience and technical skill of workers to ensure its assembly and production quality and transportation problem caused by its fixed bulk size made it gradually being eliminated by the market and replaced by consumer DIY assembly iron pipe furniture. 
     Structurally the conventional iron pipe assembly furniture principally uses pipe joints for assembly of the pipe elements and the supporting shafts to form a base rack for the iron pipe furniture, and through installation of the loading boards or panel boards thus completed assembly of the iron pipe furniture; and since the pipe joints, pipe elements and supporting racks all use screws that can be disassembled or that after assembly are fastened by bolts and nuts and hence it is unnecessary to complete assembly of the entire structure before shipping which subsequently reduced packing sizes and transportation cost and consumers only need to follow instructions in the manual to complete fastening operation with pipe joints, pipe elements and supporting shafts and is therefore very convenient. 
     However, such assembly iron pipe furniture requires using non-technical fastening method for assembly fitting and the entire production process is rather complicated and time-consuming, particularly the screws and bolts are small accessories and is usually packed in a bag as an attachment to the main parts and is rather troublesome and inconvenient, besides frequent shortage of screws and bolts is another problem causing consumers fail to complete assembly and have to resort to buying replacements and is a perennial problem in the assembly of such iron pipe furniture and has to find ways to make improvement. 
     SUMMARY OF THE INVENTION 
     In view of the aforementioned shortcoming of the prior art, the inventor of the present invention has started research to find solutions to the problems and shortcomings and because of his long years of experience and technology in the related industry the inventor eventually invented this iron pipe furniture assembly structure which principally provides a fastening operation that does not need screws and bolts therefore made it unnecessary to pack such accessories in a bag as an attachment and at the same time made the assembly operation more convenient and time-saving. 
     Another purpose of this invention is to design an assembly structure so that the furniture can be easily and speedily assembled through certain simple insertions and spiral turning actions to complete connection of the pipe elements and pipe connectors. 
     Another purpose of this invention lies in its structural design that no screws and bolts are required for fastening the pipe elements and pipe connectors in assembly so that the entire appearance of the furniture looks nicer because no screws and bolts are being used. 
     To this end, the structural design of this invention principally lies in an elongated round-shaped fastening shaft in the insertion hollow for assembly of the pipe connector and the pipe element and at one end of the pipe element is a socket set and correspondingly a diamond-round shaped insertion hole so that the long diameter of the insertion hole is slightly larger than the diameter of the fastening shaft and the short diameter of the insertion hole is slightly shorter than the diameter of the fastening shaft and the socket corresponding to the long diameter of the insertion hole is open with a slot so that the socket corresponding to the short diameter against the pressing slab has sufficient room for movement, and at the same time near the end of the pipe element has an indent groove for positioning the socket and the pipe element and enable the tool to operate the pipe element with spiral turning actions so that the assembly and connection operation of the pipe element and the pipe connector can easily and speedily be accomplished with simple insertions and spiral turning actions and that no screws and bolts are used for fastening, thus operation is simpler and speedier and outwardly nicer looking because no screws and bolts are used, thereby achieving best utilization values and practicality of the industry. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of a structure of the preferred embodiment of the present invention; 
         FIG. 2  is a schematic view of a breakdown structure of the preferred embodiment of the present invention; 
         FIG. 3  is a schematic view of the breakdown assembly of the preferred embodiment of the present invention; 
         FIG. 4  is a schematic view of the breakdown structural relation of the preferred embodiment of the present invention; 
         FIG. 5  is a schematic view of the breakdown structure of a non-positioned status of the preferred embodiment of the present invention; 
         FIG. 6  is a schematic view of the breakdown structure of a positioned status of the preferred embodiment of the present invention; 
         FIG. 7  is a schematic view of the structure of another preferred embodiment of the present invention; and 
         FIG. 8  is a schematic view of the structure with the panel board in open status of another preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The preferred embodiment below further explains the structural assembly, technical skills and performance of this invention: 
     Referring to  FIG. 1  of a schematic view of the structure,  FIG. 2  of a schematic view of the breakdown of the structure,  FIG. 3  of a schematic view of the breakdown of the structural assembly and  FIGS. 4˜6  of schematic views of the breakdown of the structural relation of the preferred embodiment of this invention; as shown in the diagrams the structural design of this invention lies mainly in using a pipe connector  10  as the connecting element for the supporting shaft  20  and the pipe element  30  in forming a basic framework of the iron pipe furniture and coupled with the loading board  21  or the panel board to complete the entire assembly of the iron pipe furniture, wherein the pipe connector  10  has a bidirectional L-shaped and a tridirectional T-shaped types and the base portion  11  has upper and lower openings with vertical insertion holes  12  for connecting the supporting shaft  20  and in line with requirement of the connecting pipe element  30  a horizontal insertion hole  13  is designed and the horizontal insertion hole  13  is in a vertical relation and at the same time in the center of the insertion hole is an elongated round-shaped fastening shaft  14  where the lateral short side has a number of inverted embedded grooves  15  and utilizing the fastening shaft  14  for insertion of the pipe element  30  and achieve a positioning performance. 
     The pipe element  30  is a hollow pipe body with appropriate length and near the end of the pipe element  30  is an embedded ring groove  32  for stable embedding of an insertion cork  40  and the insertion cork  40  should better be made of plastic injection molding and at the center of the insertion cork  40  is a diamond-round-shaped insertion hole  41  where the long diameter of the insertion hole  41  is slightly larger than the diameter of the fastening shaft  14  of the aforementioned pipe connector  10  while the short diameter of the insertion hole  41  is slightly shorter than the diameter of the fastening shaft  14  and the interface of the long and short diameter of the insertion hole  41  is designed in a slant mode and the insertion cork  40  corresponding to the long diameter direction of the insertion hole  41  is open with a slot  42  so that the insertion cork  40  corresponding to the short diameter direction of the pressing slab  43  has sufficient room for movement and on the inner side of the pressing slab  43  are a number of embedded ribs  44  while at the same time on one side of the pipe element  30  near the end portion is an indent groove  31  and utilizing the inwardly protruded shape of the embedded ring groove  32  and the embedded ring groove  32  of the insertion cork  40  will be embedded into the slot  42  of the insertion cork  40  when latter is being connected to the end portion of the pipe element  30  so that the restricted position of the insertion cork  40  and the pipe element  30  will remain in an insertion relationship and at the same time achieved a linking relation between the insertion cork  40  and the pipe element  30 . 
     Again, the indent groove  31  near the end portion of the pipe element  30  also provides the tool  50  to operate the spiral turning action of the pipe element  30  and the insertion cork  40  whereas the tool  50  mainly has a handle portion  51  for the hand to exert force and at one end of the handle  51  is a hook portion  52  designed with a clamp mouth  53  for clamping the pipe element  30  and at one end of the clamp mouth  53  is a hook  54  for pressing against the indent groove  31  of the pipe element and at the other end of the clamp mouth  53  is a chin portion for clamping against the outer surface of the pipe element  30  so that using the tool  50  to clamp the pipe element  30  can easily operate the spiral turning action. 
     That is, with above structural design the connection and assembly operation of the pipe element  30  and the pipe connector  10  of this preferred embodiment of this invention the operator needs only to align the long diameter direction of the insertion cork  40  of the pipe element  30  directly facing the fastening shaft  40  of the pipe element  30  and insert into the insertion hole  13  of the pipe connector  10  and then use the tool  50  to clamp the pipe element  30  and operate the pipe element  30  to turn so that the insertion cork  40  in connection with the end portion of the pipe element  30  and change the corresponding relation between the insertion cork  40  and the fastening shaft  14  so that the short diameter direction of the insertion hole  41  of the insertion cork  40  aligns with the long diameter direction of the fastening shaft  14  and in accommodation with the design of the short diameter direction of the insertion hole  41  of the insertion cork  40  slightly shorter than the long diameter direction of the fastening shaft  14  so that the short direction extended pressing slab  43  of the insertion cork  40  slightly extends outward because of the pressing action from the fastening shaft  14  and resulted in a tight contact positioning action on the inner wall of the pipe element  30  and at the same time enabled the embedded groove  15  on the lateral short side diameter of the fastening shaft  14  further embedded with the embedded ribs  44  on the inner side of the pressing slab  43  of the insertion cork  40  to prevent skidding, and thus through the interface action of the insertion cork  40  with the pipe element  30  and accomplished a stable connection relation with the pipe connector  20  and thereby accomplished the firm stable connection function between the pipe element  30  and the pipe connector  10  with simple insertion and spiral turning actions. 
     And to disassemble the pipe element  30  with the pipe connector  10  simply use the tool  50  to clamp the pipe element  30  and make spiral turns to turn the insertion cork  40  in connection with the end portion of the pipe element and change the corresponding relation with the fastening shaft  14  of the pipe connector  10  so that the long diameter direction of the insertion hole  41  of the insertion cork  40  correspond with the long diameter direction of the fastening shaft  14  and easily release the pipe element  30  from the insertion groove  13  of the pipe connector  10  and easily disassemble the pipe element  30  from the pipe connector  10 . 
     Furthermore, referring to  FIGS. 7 and 8  for schematic views of the preferred embodiment of this invention, as shown in the diagrams, principally uses the aforementioned pipe element  30  and the pipe connector  10  with the lateral panel boards  60  to form cabinets and using the clamp clip  70  to clamp the upper and lower portions of the pipe element  30  and the ring portion  71  at the rear end after assembly with the pipe element  30  forms a movable hinge and using the clipping slabs of the front end to fasten the door panel  61  enables the door panel  61  to open laterally to facilitate placing and retrieving articles and thereby constitutes another preferred embodiment of this invention. 
     Thus we can see that this invention has discarded the conventional way of using screws and bolts for fastening the pipe element and the pipe connector of the iron pipe furniture and instead uses an elongated round-shaped fastening shaft in the insertion hole of the pipe connector and together with the insertion hole of the insertion cork at the end portion of the pipe element to enable the turning of the pipe element to change the corresponding relation between the insertion hole of the insertion cork and the fastening shaft and thus decide the positioning or release relation between the pipe element and the pipe connector to meet requirements of assembly or disassembly, in other words, with the innovative structural design of this invention the assembly or disassembly of the iron pipe furniture can be easily positioned or released with certain simple turning actions so that assembly or disassembly can both be conveniently carried out and in contrast to the time-consuming and troublesome conventional fastening structure and often shortages of accessories it is of more utilization values and practicality of the industry. 
     In summation of the description above, the innovative design of this invention for the iron pipe furniture by utilizing the elongated round-shaped fastening shaft of the pipe connector with the insertion hole of the insertion cork of the pipe element at the end portion has enabled simple insertions and spiral turning actions to speedily complete connection and assembly of the pipe element and the pipe connector and eliminated the many problems and shortcomings of using conventional fastening or fastening structure; overall this superior innovative design is of best utilization values and practicality of the industry and is therefore duly filed for patent application in accordance with the law.