Patent Publication Number: US-2022228619-A1

Title: Fastening element for increasing fixing stability

Description:
TECHNICAL FIELD 
     The present invention relates to a fastening element for increasing fixing stability in which a drill section is formed at a bottom tip of a lower end of a fixture so that a fixing recess can be easily formed on a structure by the drill section, and in which a cut-out part is formed on the lower end of the fixture in such a manner as to be formed sharp at one side thereof and formed blunt at the other side thereof so that the fastening element can be easily screw-fastened to the fixing recess of the structure and simultaneously can be prevented from being loosened due to external vibration and the like. 
     BACKGROUND ART 
     In general, a fixing element used to fix a scaffolding for working, and the like is inserted into a bore-hole drilled previously in a rigid bottom such as wall, concrete, rock or the like or a fixing plate so as to be coupled to the bottom or the fixing plate. As a prior art associated with such a fixing element, Korean Patent Laid-Open Publication No. 10-2002-0083917 entitled “Fixing Element” and Korean Patent Laid-Open Publication Nos. 10-2014-0064977 entitled “Fastening System” have been proposed. 
     Korean Patent Laid-Open Publication No. 10-2002-0083917 discloses a general fixing element configured to be inserted into a bore-hole drilled previously in a rigid bottom such as concrete, rock, steel or the like using a setting device driven by high-pressure gas, the fixing element including a shaft 1, 11 or 21 having a free end formed flatly and a load acting means 2, 12 or 22, wherein the external contour of the shaft 1, 11 or 21 is formed in a cylindrical shape. In addition, Korean Patent Laid-Open Publication Nos. 10-2014-0064977 discloses a fastening system 1 configured to fix an accessory part 14 to a setting object 17 by means of a setting bolt 2, the fastening system which includes: the setting bolt 2 formed with a first end 3 and a second end 4 and having a fixed region 5 and a load applying region 6; a ring- or sleeve-shaped sealing element 10 having an opening 13 formed therein to seal the setting bolt 2 to be inserted into the setting object 17; and the accessory part 14, for example, a grating plate, an electric fastening device or a spacer that is configured to be fixed to the load applying region 6 of the setting bolt 2. According to the fastening system, the corrosion of the setting bolt 2 should be suppressed permanently, and the sealing element 10 is supported at a first end  11  thereof by the setting object 17 and at a second end 12 thereof by the accessory part 14 and/or the setting bolt 2 in an inserted state of the setting bolt 2 so that the sealing element 10 is extended in an axial direction. 
     However, such conventional inventions has a simple structure in which a lower end  22  of a fixture  20  is insertedly coupled to a fixing recess  11  formed on the top surface of a fixing plate  10  as shown in  FIG. 1 . Therefore, a problem occurs in that when a lateral external force is repeatedly exerted on the fixture protruded outwardly from the surface of the fixing plate  10  or the lateral external force is large, the fixing stability is deteriorated. 
     In an attempt to solve the above problem, the applicant has filed a patent application entitled “Strike assembly Type Fixing Device for A Shipyard” and has been granted a registration. As shown in  FIG. 2 , the strike assembly type fixing device for a shipyard includes: a fixing plate  10  having a fixing recess  11  formed thereon; a fixture  20  including an upper end  21  having threads formed thereon so as to be coupled with a separate fastening element  50 , a lower end  22  fittingly fixed to the fixing recess of the fixing plate  10 , and a protruding flange  23  formed inclinedly downwardly along an outer circumferential surface of a connection portion between the upper end  21  and the lower end  22 , wherein the upper end  21 , the lower end  22 , and the protruding flange  23  are formed integrally with each other; and a packing ring  30  made of an elastic rubber material and fitted around the lower end  22  of the fixture  20  so as to be brought into close contact with an underside of the protruding flange  23 . 
     However, the strike assembly type fixing device for a shipyard entails a problem in that since the fixing recess  11  is formed on the fixing plate  10  by using a drill and then the strike assembly type fixing device is struck to be fittingly fixed to the fixing recess  11 , a separate process of forming the fixing recess is necessary, leading to an increase in the work time. 
     DISCLOSURE OF INVENTION 
     Technical Problem 
     Accordingly, the present invention has been made in order to solve the above-described problems occurring in the prior art, and it is an object of the present invention is to provide a fastening element for increasing fixing stability in which a drill section is formed at a bottom tip of a lower end of a fixture so that a fixing recess can be easily formed on a structure by the drill section, and in which a cut-out part is formed on the lower end of the fixture in such a manner as to be formed sharp at one side thereof and formed blunt at the other side thereof so that the fastening element can be easily screw-fastened to the fixing recess of the structure and simultaneously can be prevented from being loosened due to external vibration and the like. 
     Another object of the present invention is to provide a novel fastening element for increasing fixing stability in which a protrusion is formed protrudingly downwardly from an underside of a flange so that the protrusion can be pressed against a top surface of a structure to allow the fastening element to be more securely fastened to the structure. 
     Still another object of the present invention is to provide a novel fastening element for increasing fixing stability in which a polygonal upper flange is formed on a top surface of a flange so that a fastening part of a fixture or the upper flange can be tightened by using a wrench or the like to allow the fastening element to be easily fixedly fastened to the structure. 
     Technical Solution 
     To achieve the above objects, the present invention provides a fastening element for increasing fixing stability, including: a fixture  20  comprising a fastening part  21 , a threaded upper end  22  formed below the fixture  20 , and a threaded lower end  23  formed below the upper end  22  so as to be fixedly fastened to a fixing recess  102  formed on a structure  100 ; a flange  30  formed extending radially outwardly from an outer circumferential surface of a connection portion between the upper end  22  and the lower end  23 ; and a drill section  40  formed at a bottom tip of the lower end  23  of the fixture  20  and configured to form the fixing recess of the structure  100 . 
     In the fastening element for increasing fixing stability according to the present invention, the fixture  20  may include a cut-out part  24  formed on the lower end  23  thereof in such a manner as to be incised extending from the drill section  40  to the flange  30  at a certain angle. 
     In the fastening element for increasing fixing stability according to the present invention, the cut-out part  24  may include a molded sharp edge  241  formed on one side thereof so as to form the fixing recess  102  on the structure  100  and a blunt edge  242  formed on the other side thereof. 
     In the fastening element for increasing fixing stability according to the present invention, the flange  30  may include a protrusion  31  formed protrudingly downwardly from an underside thereof. 
     In the fastening element for increasing fixing stability according to the present invention, the flange  30  may include a polygonal upper flange  32  formed on a top surface thereof. 
     Advantageous Effects 
     The fastening element for increasing fixing stability according to the present invention has effects in that the drill section is formed at the bottom tip of the lower end of the fixture so that the fixing recess can be easily formed on the structure by the drill section, and in which the cut-out part is formed on the lower end of the fixture in such a manner as to be formed sharp at one side thereof and formed blunt at the other side thereof so that the fastening element can be easily screw-fastened to the fixing recess of the structure and simultaneously can be prevented from being loosened due to external vibration and the like. 
     In addition, the fastening element for increasing fixing stability according to the present invention has effects in that the protrusion is formed protrudingly downwardly from the underside of the flange so that the protrusion can be pressed against the top surface of the structure to allow the fastening element to be more securely fastened to the structure. 
     Further, the fastening element for increasing fixing stability according to the present invention has effects in that the polygonal upper flange is formed on the top surface of the flange so that the fastening part of the fixture or the upper flange can be tightened by using a wrench or the like to allow the fastening element to be easily fixedly fastened to the structure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which: 
         FIGS. 1 and 2  are views showing a prior art technology; 
         FIG. 3  is a top and bottom perspective view showing a fastening element for increasing fixing stability according to a preferred embodiment of the present invention; 
         FIG. 4  is a front and bottom view showing a fastening element for increasing fixing stability according to a preferred embodiment of the present invention; 
         FIG. 5  shows top perspective views of various modifications of a fixture of a fastening element for increasing fixing stability according to a preferred embodiment of the present invention; 
         FIG. 6  shows a top and bottom perspective view of various modifications of a flange of a fastening element for increasing fixing stability according to a preferred embodiment of the present invention; and 
         FIG. 7  is a cross-sectional view showing a fastening process of a fastening element for increasing fixing stability according to a preferred embodiment of the present invention. 
     
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     The preferred embodiment of the present invention will be described hereinafter in detail with reference to  FIGS. 3 to 7 . In  FIGS. 3 to 7 , elements of performing the same function are denoted by the same reference numerals. In the meantime, in the detailed description and the accompanying drawings, illustration and explanation on the detailed technical construction and operation of elements, which have no direct connection with the technical features of the present invention, will be omitted, and only the technical constructions directly related with the present invention will be briefly illustrated and explained. 
     Referring to  FIGS. 3 to 7 , a fastening element for increasing fixing stability according to a preferred embodiment of the present invention includes a fixture  20 , a flange  30  and a drill section  40 . 
     The fixture  20  is intended to be fixedly fastened to a fixing recess  102  of a structure  100 . The fixture  20  includes a fastening part  21 , a threaded upper end  22  formed below the fixture ( 20 ), and a threaded lower end  23  formed below the upper end  22  so as to be fixedly fastened to the fixing recess  102  of the structure  100 . The fastening part is rotated by means of a fastening tool. The fastening tool refers to a tool such as a spanner, a wrench or the like. 
     The outer circumferential surface of the fastening part of the fixture  20  is formed in a circular or polygonal shape, and the fastening part  21  has a polygonal shaped recess  211  formed therein to allow any one selected from between the circular-shaped fastening part  21  and the polygonal-shaped fastening part  21  to be rotated by the fastening tool. In other words, the fastening part  21  has a polygonal outer circumferential surface and a polygonal shaped recess  211  formed therein as shown in  FIG. 5( a ) , has a circular outer circumferential surface and a polygonal shaped recess  211  formed therein as shown in  FIG. 5( b ) , and has a polygonal outer circumferential surface with no recess formed therein as shown in  FIG. 5( c ) . 
     The fixture  20  includes a cut-out part  24  formed on the lower end  23  thereof in such a manner as to be incised extending from the drill section  40  to the flange  30  at a certain angle. The cut-out part  24  includes a molded sharp edge  241  formed on one side thereof so as to form the fixing recess  102  on the structure  100  and a blunt edge  242  formed on the other side thereof. In other words, the sharp edge  241  is formed on one side of the cut-out part  24  to correspond to a rotational direction of the fastening element  10  so that when the fastening element  10  is rotated, a screw thread is formed on an inner circumferential surface of the fixing recess  102  of the structure  100  and simultaneously the fastening element  10  is easily fixedly fastened to the structure  100 . The blunt edge  242  formed on the other side of the cut-out part  24  can prevent the fastening element  10  from being loosened with respect to the rotational direction of the fastening element  10 . 
     The flange  30  is formed extending radially outwardly from an outer circumferential surface of a connection portion between the upper end  22  and the lower end  23  of the fixture  20 . In addition, as shown in  FIG. 6 , a plurality of protrusions  31  is formed protrudingly downwardly from an underside of the flange  30  and a polygonal upper flange  32  is formed on a top surface of the flange  30 . In this case, the upper flange  32  has a diameter smaller than that of the flange  30  and larger than that of the upper end  22  of the fixture  20 . 
     As described above, only the protrusions may be formed on the underside of the flange  30  or only the upper flange  32  may be formed on the top surface of the flange  30 . Alternatively, the protrusions  31  and the upper flange  32  may be formed on the underside and the top surface of the flange  30 , respectively. 
     The drill section  40  is configured to form the fixing recess  102  on the structure  100  and is formed at a bottom tip of the lower end  23  of the fixture  20 . 
     As described above, according to the fastening element for increasing fixing stability  10  of the present invention, the drill section  40  is formed at the bottom tip of the lower end  23  of the fixture  20  so that the fixing recess  102  can be easily formed on the structure  100  by the drill section  40 , and the cut-out part  24  is formed on the lower end  23  of the fixture  20  in such a manner as to be formed sharp at one side thereof and formed blunt at the other side thereof so that the fastening element  10  can be easily screw-fastened to the fixing recess  102  of the structure  100  and simultaneously can be prevented from being loosened due to external vibration and the like. 
     In addition, the protrusion  31  is formed protrudingly downwardly from the underside of the flange  30  so that the protrusion  31  can be pressed against the top surface of the structure  100  to allow the fastening element  10  to be more securely fastened to the structure  100 . 
     Further, the polygonal upper flange  32  is formed on the top surface of the flange  30  so that the fastening part  21  of the fixture  20  or the upper flange  32  can be tightened by using a wrench or the like to allow the fastening element to be easily fixedly fastened to the structure  100 . 
       FIG. 7  is a cross-sectional view showing a fastening process of a fastening element for increasing fixing stability according to a preferred embodiment of the present invention. 
     Referring to  FIG. 7 , the position where to fasten the fastening element to the structure  100  is identified, and then the fastening element  100  for increasing fixing stability is placed at the identified position on the structure  10 . Thereafter, the fastening part  21  of the fixture  20  or the upper flange  32  (not shown) of the flange is caused to be rotated by using a fastening tool. In this case, the fastening tool may be a spanner or a wrench. When the fastening element  10  is rotated by fastening tool, the drill section  40  is rotated while forming the fixing recess  102  on the structure  100 , and a screw tap is formed on an inner circumferential surface of the fixing recess  102  of the structure  100  by the lower end  23  of the fixture  20  to cause the fastening element  10  for increasing fixing stability to be fixedly fastened to the fixing recess  102  of the structure  100 . At this time, the protrusions  31  of the flange  30  are pressed against a top surface of the structure  100  while being brought into close contact with the top surface of the structure  100  so that the fastening element  10  is more securely fastened to the structure  100 . 
     While the fastening element for increasing fixing stability according to a preferred embodiment of the present invention has been described and illustrated in connection with specific exemplary embodiments with reference to the accompanying drawings, it will be readily appreciated by those skilled in the art that it is merely illustrative of the preferred embodiments of the present invention and various modifications and changes can be made thereto within the technical spirit and scope of the present invention. 
     Best Mode 
     In a best mode for carrying out the present invention, the present invention provides a fastening element for increasing fixing stability, including: a fixture  20  comprising a fastening part  21 , a threaded upper end  22  formed below the fixture  20 , and a threaded lower end  23  formed below the upper end  22  so as to be fixedly fastened to a fixing recess  102  formed on a structure  100 ; a flange  30  formed extending radially outwardly from an outer circumferential surface of a connection portion between the upper end  22  and the lower end  23 ; and a drill section  40  formed at a bottom tip of the lower end  23  of the fixture  20  and configured to form the fixing recess of the structure  100 . 
     In a best mode for carrying out the present invention, the fixture  20  includes a cut-out part  24  formed on the lower end  23  thereof in such a manner as to be incised extending from the drill section  40  to the flange  30  at a certain angle. 
     In a best mode for carrying out the present invention, the cut-out part  24  includes a molded sharp edge  241  formed on one side thereof so as to form the fixing recess  102  on the structure  100  and a blunt edge  242  formed on the other side thereof. 
     In a best mode for carrying out the present invention, the flange  30  includes a protrusion  31  formed protrudingly downwardly from an underside thereof. 
     In a best mode for carrying out the present invention, the flange  30  includes a polygonal upper flange  32  formed on a top surface thereof. 
     INDUSTRIAL APPLICABILITY 
     The fastening element for increasing fixing stability according to the present invention is expected to be widely used in industrial fields in that the drill section is formed at the bottom tip of the lower end of the fixture so that the fixing recess can be easily formed on the structure by the drill section, and in that the cut-out part is formed on the lower end of the fixture in such a manner as to be formed sharp at one side thereof and formed blunt at the other side thereof so that the fastening element can be easily screw-fastened to the fixing recess of the structure and simultaneously can be prevented from being loosened due to external vibration and the like. 
     In addition, the fastening element for increasing fixing stability according to the present invention is expected to be widely used in industrial fields in that the protrusion is formed protrudingly downwardly from the underside of the flange so that the protrusion can be pressed against the top surface of the structure to allow the fastening element to be more securely fastened to the structure. 
     Further, the fastening element for increasing fixing stability according to the present invention is expected to be widely used in industrial fields in that the polygonal upper flange is formed on the top surface of the flange so that the fastening part of the fixture or the upper flange can be tightened by using a wrench or the like to allow the fastening element to be easily fixedly fastened to the structure.