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KR-20260065054-A - FRICTIONAL PENETRATED SCREW FASTENING ELEMENT AND SCREW FASTENING MODULE WITH THE SAME

KR20260065054AKR 20260065054 AKR20260065054 AKR 20260065054AKR-20260065054-A

Abstract

The present invention provides a frictional penetration fastening member (10) and a frictional penetration fastening module, wherein the frictional penetration fastening member enables mutual fastening of multiple plates by forming a material softening state using frictional heat generated by high-speed rotation, and comprises a penetration portion (11) that is positioned through through friction with multiple plates, a threading portion (13) connected to the end of the penetration portion (11) and having an outer circumference thread (13a) that forms and fastens screw threads on the inner surface of the penetration hole of multiple plates, and a fastening head (15) connected to the end of the threading portion (13), wherein the cross-sections of the penetration portion (11) and the threading portion (13) are each having different shapes.

Inventors

  • 이원준
  • 박은기
  • 이신우
  • 손원형
  • 최정묵
  • 박민흥

Assignees

  • (주)진합

Dates

Publication Date
20260508
Application Date
20241031

Claims (20)

  1. A frictional penetration fastening member that enables multiple plates to be mutually fastened by forming a softened material state using frictional heat generated by high-speed rotation, A penetration portion (11) that is positioned through through friction with multiple plate materials, and A threading part (13) having an outer circumference thread (13a) connected to the end of the penetration part (11) and formed and fastened to the inner surface of a plurality of plate through holes, and It includes a fastening head (15) connected to the end of the threading part (13), and A frictional penetration fastening member (10) characterized in that the cross-sections of the penetration portion (11) and the threading portion (13) respectively have different shapes.
  2. In Article 1. Frictional penetration fastening member (10) characterized in that at least a portion of the cross-sectional shape of the threading portion (13) is a rounded polygonal shape.
  3. In Paragraph 2, The threading unit (13) above is: A threading forming portion (131) connected to the penetration portion (11) and in which at least a portion of the outer thread (13a) begins to be formed in the direction of the fastening head (15), and The threading base part (135) connected to the above-mentioned fastening head (15) A frictional penetration fastening member (10) characterized by including a threading fastening member (133) disposed between the threading forming member (131) and the threading base member (135), wherein at least another part of the outer thread (13a) is formed toward the threading base member (135).
  4. In Paragraph 3, The above outsourced thread (13a) is An outer thread forming part (131a) disposed on the threading forming part (131) above, and A frictional penetration fastening member (10) characterized by including an outer thread fastening member (133a) disposed on the threading fastening member (133) above.
  5. In Paragraph 4, Frictional penetration fastening member (10) characterized in that the outer thread forming portion (131a) and the outer thread fastening portion (133a) have the same thread width and include different outer thread diameters.
  6. In Paragraph 4, Frictional penetration fastening member (10) characterized in that the outer thread forming portion (131a) and the outer thread fastening portion (133a) have different thread widths.
  7. In Paragraph 5, A frictional penetration fastening member (10) characterized in that the thread height of the outer thread forming portion (131a) is lower than the thread height of the outer thread fastening portion (133a).
  8. In Paragraph 4, The lengths of the threading base portion (135) and the threading fastening portion (133) are as follows: Frictional penetration fastening member (10) characterized by being longer than one side of a plurality of plate members and the length of a plurality of plate members funnel.
  9. In Paragraph 4, Frictional penetration fastening member (10) characterized in that the cross-sectional shape of the threading forming portion (131) and the threading fastening portion (133) is rounded polygonal.
  10. In Paragraph 4, The threading unit (13) above A frictional penetration fastening member (10) characterized by being tapered along the longitudinal direction from the threading forming portion (131) toward the threading fastening portion (133).
  11. In Article 10, Frictional penetration fastening member (10) characterized in that at least a portion of the outer thread (13a) is a rounded thread.
  12. In Paragraph 3, A frictional penetration fastening member (10) characterized in that at least a portion of the cross-sectional shape of the penetration portion (11) is a rounded rectangular shape.
  13. In Paragraph 3, A frictional penetration fastening member (10) characterized in that the length of the threading base portion (135) and the threading fastening portion (133) is longer than the length of one side of the plurality of plates and the plurality of plates funnel.
  14. In Article 1, Frictional penetration fastening member (10), characterized in that the fastening head (15) has a fastening head cavity (153) that forms an internal cavity when in contact with a plurality of plate materials on the bottom surface facing the threading part (13).
  15. In Paragraph 14, A frictional penetration fastening member (10) characterized by having a fastening head cavity line (1531) that partitions the fastening head cavity (153) inside the fastening head cavity (153).
  16. In Article 15, The above-mentioned fastening head cavity line (1531) is, A frictional penetration fastening member (10) characterized by being radially arranged from the threading part (13) when projected onto a plane perpendicular to the longitudinal direction of the penetration part (11) and the threading part (13).
  17. In Article 15, The above-mentioned fastening head cavity line (1531) is, A frictional penetration fastening member (10) characterized by being curved spirally arranged from the threading part (13) toward the outer circumference of the fastening head (15) when projected onto a plane perpendicular to the longitudinal direction of the penetration part (11) and the threading part (13).
  18. In Paragraph 14, At least a portion of the above-mentioned fastening head cavity (153) is, A frictional penetration fastening member (10) characterized by having a cavity distance reduction part (Acd) in which the cavity distance (dc) between the inner side forming the fastening head cavity (153) and one side of the multiple plates decreases as it moves in the radial direction when mounting multiple plates.
  19. In Paragraph 14, At least a portion of the above-mentioned fastening head cavity (153) is, A frictional penetration fastening member (10) characterized by having a cavity distance increasing portion (Aci) in which the cavity distance (dc) between the inner side forming the fastening head cavity (153) and one side of the multiple plates increases as it moves in the radial direction when multiple plates are mounted.
  20. In Article 1, The frictional penetration fastening member (10) is characterized by the above-mentioned fastening head (15) including a head serration (151a) formed on the contact surface with the plate material, which protrudes or grooves.

Description

Frictional Penetration Fastening Element and Frictional Penetration Fastening Module The present invention relates to a member for fastening, such as joining plates, and to a fastening member that enables fastening between multiple plates by high-speed rotation without requiring processes such as cutting, and to a fastening module formed by the fastening member. With the advancement of industrial technology, various industrial and household equipment such as automobiles and robots are being manufactured, manufacturing methods are being researched in diverse ways, and manufacturing processes are being applied in actual sites. In particular, as technologies such as robots and electric vehicles advance, there is a growing demand for rapid and highly reliable manufacturing methods that move away from traditional production methods, driven by material diversity and design sophistication. In the case of conventional methods for fastening multiple plates, manufacturing methods were implemented that involved direct fastening or required additional fastening elements such as rivets or speed nuts as intermediaries. However, this method was accompanied by problems such as weakened binding strength of the plates due to low fastening force caused by the short length of the fastening members, longer process time as the number of parts increases, a higher possibility of defects as the number of processes increases, and higher manufacturing costs. FIG. 1 is a schematic diagram of a frictional penetration fastening member according to an embodiment of the present invention. FIGS. 2 to 7 are schematic partial cross-sectional views taken along lines II, II-II, III-III, and IV-IV of FIG. 1. FIG. 8 is a partial enlarged view of the penetration portion (11) of the frictional penetration fastening member (10). FIG. 9 is a graph showing an example of a preset range radius (Rs) including a preset maximum radius (Rs,mzx) and a preset minimum radius (Rs,min) according to an embodiment of the present invention, and a tip radius (R111) of a penetration tip (111). FIG. 10 is a graph showing an example of the radius of curvature (R113; R113a, R113b, R113c) of a penetration body (113) configured such that a penetration tip (111) according to an embodiment of the present invention is positioned at the tip. FIG. 11 is a partial enlarged view of the thread portion (13) of the frictional penetration fastening member (10). FIG. 12 is a diagram showing an example of a screw thread structure in which front and rear inclined surfaces (113af, 113ab) have different screw thread inclination angles (θ1, θ2) according to an embodiment of the present invention. FIG. 13 is a schematic partial cross-sectional view of a frictional penetration fastening member and module. Figure 14 is a partial enlarged cross-sectional view of the fastening head. FIG. 15 is a state diagram projected onto a plane perpendicular to the longitudinal direction of the thread portion of the fastening head. Figure 16 is a partial cross-sectional view taken along line VV of Figure 15. FIG. 17 is a state diagram of a modified example of a state diagram when projected onto a plane perpendicular to the longitudinal direction of the thread portion of the fastening head. FIGS. 18 and FIGS. 19 are diagrams of the shape structure of the fastening head cavity of the present invention. FIG. 20 is a diagram showing the configuration of head serrations formed on the seating surface of a fastening head according to an embodiment of the present invention. FIG. 21 is a side view of a tapering configuration in which the outer diameter of the screw thread from the tip to the head is gradually increased according to an embodiment of the present invention. FIG. 22 is a flowchart illustrating the process of forming a frictional penetration fastening member module by fastening a plurality of plate materials through a frictional penetration fastening member of an embodiment of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions could obscure the essence of the invention, such detailed description is omitted. The present invention enables the frictional penetration fastening member (10) to mutually fasten multiple plate materials by forming a softened state of the material using frictional heat generated by high-speed rotation. FIG. 1 shows a schematic diagram of a frictional penetration fastening member according to an embodiment of the present invention, FIG. 2 to 7 show schematic partial cross-sectional views taken along lines I-I, II-II, III-III