WO2018190393A1 - Structure de fixation pour goujon et élément fixé, procédé de fixation et goujon - Google Patents

Structure de fixation pour goujon et élément fixé, procédé de fixation et goujon Download PDF

Info

Publication number
WO2018190393A1
WO2018190393A1 PCT/JP2018/015334 JP2018015334W WO2018190393A1 WO 2018190393 A1 WO2018190393 A1 WO 2018190393A1 JP 2018015334 W JP2018015334 W JP 2018015334W WO 2018190393 A1 WO2018190393 A1 WO 2018190393A1
Authority
WO
WIPO (PCT)
Prior art keywords
stud
caulking
diameter
fixed
stud bolt
Prior art date
Application number
PCT/JP2018/015334
Other languages
English (en)
Japanese (ja)
Inventor
茂人 森
展由 浅野
賢 板敷
Original Assignee
株式会社トープラ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社トープラ filed Critical 株式会社トープラ
Publication of WO2018190393A1 publication Critical patent/WO2018190393A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread

Definitions

  • the present invention relates to a stud bolt that is fixed such that a stud portion on which a part is mounted protrudes on one surface of a fixed member and a screw shaft portion protrudes on the other surface, and in particular, a stud bolt and a fixed member.
  • the present invention relates to a fixing structure, a method for fixing a stud bolt and a fixed member, and a stud bolt used for the fixing method.
  • the stud bolt 401 has a head portion 405 having the largest outer diameter and a shaft of a component 402 such as a pulley fixed from the head portion 405 to the tip side.
  • the second shank 407 By inserting the second shank 407 into the metal plate 403, which is a fixed member having a hole having a diameter equal to or larger than that of the second shank 407, and cold-working the second shank 407, By forming a crushing portion 407a compressed in the direction and expanded in the radial direction and fitting into the edge portion 403a of the hole of the metal plate 403, the component 402 inserted into the first shank 406 is inserted into the metal plate 403. It comes to be attached to. An edge portion 403 a of the hole of the metal plate 403 is bent into the annular groove 410.
  • the height of the expanded portion 407a of the expanded second shank is If the height is not equal to or less than the fastening surface of the metal plate 403, the fastening plate 411 is not in close contact, and if the gap g is generated, normal fastening cannot be performed, and loosening may occur. It is very difficult to suppress the height of the crushing portion 407a of the second shank, and it is necessary to chamfer the pilot hole of the metal plate 412.
  • Patent Document 1 discloses an example in which an annular groove does not exist in the shoulder portion 409 of the first shank 406, but it protrudes without a portion in which the material of the collapsed portion 407a of the expanded second shank 407 fits.
  • the height cannot be equal to or lower than the fastening surface of the metal plate 403, and the gap is further increased.
  • the present invention has been made in order to solve the above-described problems of the prior art, and an object of the present invention is to firmly fix the stud bolt to the member to be fixed, and the screw shaft portion projects from the crimped portion.
  • An object of the present invention is to provide a fixing structure, a fixing method, and a stud bolt between a stud bolt and a fixed member that do not protrude from the plate surface of the fixed member on the side.
  • a fixing structure of a stud bolt and a member to be fixed includes a stud portion, a caulking shaft portion extending in an axial direction from the stud portion, and an opposite side of the stud portion of the caulking shaft portion.
  • a screw shaft portion extending in an axial direction from the end portion on the side, the caulking shaft portion is fixed to a fixing hole of the fixed member, and a stud portion protrudes from one surface of the fixed member, and the other surface
  • a fixing structure of the stud bolt and the fixed member having a structure in which the screw shaft portion protrudes
  • On the outer periphery of the caulking shaft portion an axially extending ridge that is fitted into a plurality of axial grooves formed on the inner periphery of the fixing hole of the fixed member is provided,
  • a protruding portion that protrudes radially outward and engages with a peripheral edge portion of the fixing hole of the fixed member is provided
  • an annular recess that is locally recessed with the overhang is formed, An inner diameter of the annular recess is larger than an inner diameter that is a diameter on a base side of the ridge, and is smaller
  • the protruding portion of the caulking shaft portion is closely fitted in the axial groove of the fixing hole of the fixed member, and the protruding portion provided on the end portion of the protruding item is fixed. Because it engages with the peripheral edge of the hole, it is strong against loads in various directions such as axial pulling load and bending force in the direction perpendicular to the axis, not only in the torsional direction, even if the fixed member is thin. Can be joined. Furthermore, by forming an annular recess that is recessed locally along with the overhang at the periphery of the fixing hole of the member to be fixed, the overhang does not protrude from the plate surface of the member to be fixed.
  • the stud portion includes a shank portion that rotatably supports a part, and the shank portion has a diameter larger than the diameter of the end portion on the shank portion side of the caulking shaft portion, and the caulking shaft portion side of the shank portion.
  • the shoulder portion Is connected to the caulking shaft portion via a shoulder portion that forms a step, the shoulder portion contacts the fixed member, and the fixed member is interposed between the shoulder portion and the overhanging portion. It can be set as the structure inserted
  • the stud portion includes a shank portion that rotatably supports and slides a component through a collar.
  • the diameter of the shank portion is the same as the diameter of the end portion on the shank portion side of the caulking shaft portion, the end surface on the caulking shaft portion side of the collar is in contact with the fixed member, and the fixed member is attached to the collar It can also be set as the structure pinched in the axial direction between the end surface by the side of a crimping shaft part and the said overhang
  • another fastening plate may be stacked on the fixed member, and the fastening plate may be fixed by a female screw component screwed into the screw shaft portion.
  • the fastening plate is fixed in this way, the overhanging portion is accommodated in the annular recess, so that the member to be fixed and the fastening plate can be closely bonded without any gap.
  • the stud bolt and the fixing member of the present invention include a stud portion, a caulking shaft portion extending in the axial direction from the stud portion, and an axial direction from an end portion of the caulking shaft portion opposite to the stud portion.
  • the caulking shaft portion is provided with a plurality of protrusions extending in the axial direction in the circumferential direction,
  • the caulking shaft portion is press-fitted into the inner periphery of the lower hole of the fixed member, and the end of the protruding shaft on the screw shaft portion side is simply caulked.
  • a fitting structure having an axial groove that fits the ridge around the periphery can be formed, and an overhanging portion that engages with the peripheral edge of the pilot hole can be formed at the end of the ridge. Furthermore, by projecting from the plate surface of the fixed member including the overhanging portion, it is possible to prevent the protruding portion from protruding from the plate surface of the fixed member.
  • the stud portion includes a shank portion that rotatably supports a part, and the shank portion has a diameter larger than a diameter of an end portion on the shank portion side of a caulking shaft portion, and the caulking shaft portion of the shank portion.
  • the end on the side is connected to the caulking shaft portion via a shoulder portion that forms a step, the shoulder portion contacts the fixed member, and the fixed member is placed between the shoulder portion and the overhanging portion. It can also be configured so as to be sandwiched in the axial direction.
  • the stud portion includes a shank portion that rotatably supports and slides a component through a collar, and the diameter of the shank portion is the same as the diameter of the end portion on the shank portion side of the caulking shaft portion, An end surface of the collar on the side of the caulking shaft may be brought into contact with the member to be fixed, and the fixing member may be sandwiched between the end surface on the side of the caulking shaft of the collar and the protruding portion in the axial direction. it can.
  • the caulking of the ridge is performed by a caulking die having a hole through which the screw shaft portion is inserted, and a ring convex portion for forming the annular concave portion is provided on the peripheral edge of the caulking die. can do. By using a caulking die having an annular convex portion in this way, it is possible to perform press fitting of the caulking shaft portion, caulking of the ridges, and formation of the annular concave portion with a single die.
  • the stud bolt of the present invention includes a stud portion, a caulking shaft portion that extends in an axial direction from the stud portion, and is fixed to a prepared hole of a fixed member, and the caulking shaft portion on the side opposite to the stud portion.
  • a stud bolt having a screw shaft portion extending in an axial direction from an end portion, A plurality of ridges extending in the axial direction are provided on the outer periphery of the caulking shaft portion in the circumferential direction,
  • the outer diameter of the ridge is larger than the hole diameter of the pilot hole of the fixed member, and the inner diameter of the base side of the ridge is smaller than the hole diameter of the pilot hole,
  • the length of the ridge is longer than the thickness of the member to be fixed, and the end on the screw shaft side of the ridge protruding from the member to be fixed is caulked when being fixed to the member to be fixed.
  • the caulking part An inner diameter of the annular recess is larger than an inner diameter that is a diameter on a base side of the ridge, and is smaller than an outer diameter.
  • the caulking shaft portion may be provided with a tapered portion at the end on the screw shaft portion side that is reduced in diameter so that the diameter gradually decreases toward the tip of the screw shaft portion.
  • the portion on the stud portion side of the valley portion between the ridges can be configured as an inclined portion that gradually inclines radially outward toward the stud portion side. If it does in this way, when it press-fits in the prepared member's pilot hole, the metal material of the to-be-fixed member which approachs a trough part will be compressed in a wedge shape, will contact a trough part closely, and joint strength will increase. Further, the plurality of ridges provided on the caulking shaft portion can be knurled portions. If it does in this way, a protruding item
  • the stud bolt can be firmly fixed to the fixed member, and there is no gap between the plate surface of the thin metal plate on the side from which the screw shaft portion protrudes and the fastening surface of the mating member.
  • FIG. 1A and 1B show a fixing structure between a stud bolt and a thin metal plate according to an embodiment of the present invention.
  • FIG. 1A is a front view partially showing a fixing portion with the thin metal plate
  • FIG. The partial enlarged view schematically showing the vicinity of the annular recess of the metal thin plate of (A) as viewed from the shaft tip direction
  • (C) is a partial enlarged sectional view taken along the line CC of (B)
  • (D) is D of (B).
  • FIG. 2 shows the stud bolt of FIG. 1,
  • (A) is a front view,
  • (B) is a cross-sectional view taken along line BB of (A), and
  • (C) is a partially enlarged view near the knurled portion of (A).
  • FIG. 3 is an explanatory view for explaining the dimensional relationship among the stud bolt, the metal thin plate, and the caulking die.
  • 4 (A) to 4 (C) are diagrams showing the steps of the method for fixing the stud bolt and the metal thin plate of the present invention.
  • FIGS. 5A to 5H are explanatory views for explaining the steps of the fixing method of the present invention in more detail.
  • 6A and 6B show a modification of the stud bolt of FIG. 2, in which FIG. 6A is a front view and FIG. 6B is a partially broken partial enlarged view of FIG.
  • FIG. 7 is a partially cutaway front view of a structure in which another fastening plate is fixed to the metal thin plate of FIG.
  • FIGS. 8A to 8H are views showing other forms of the stud bolt of the present invention.
  • FIG. 9 shows a fixing structure between the stud bolt and the thin metal plate in FIG. 8 (D)
  • (A) is a front view partially showing a fixing portion with the thin metal plate
  • (B) is the direction of the screw shaft tip.
  • (A) A partially enlarged view schematically showing the vicinity of an annular recess of a thin metal plate of (A)
  • (C) is a partially enlarged sectional view taken along line CC of (B)
  • (D) is a DD line of (B). It is a partial expanded sectional view.
  • FIGS. 10A to 10C are views showing steps of the method for fixing the stud bolt and the metal thin plate in FIG. 8D, and FIG.
  • FIG. 10D is a partially enlarged view of FIG. 11A and 11B show a conventional structure for fixing a stud bolt and a metal plate.
  • FIG. 11A is a perspective view of the stud bolt
  • FIG. 11B is a cross-sectional view of a structure to which the metal plate is fixed.
  • FIG. 1 shows a fixing structure of a stud bolt according to an embodiment of the present invention and a metal thin plate as an example of a member to be fixed
  • FIG. 2 shows the stud bolt.
  • the stud bolt 1 includes a stud portion 2, a caulking shaft portion 3 extending in the axial direction from the stud portion 2, and a complete thread 41 extending in the axial direction from an end portion of the caulking shaft portion 3 opposite to the stud portion 2. And a threaded shaft 4.
  • the stud portion 2 includes a cylindrical shank portion 21 that supports the component 300 so as to be rotatable and slidable, and a head portion having a larger diameter than the shank portion 21 provided on the end portion of the shank portion 21 opposite to the caulking shaft portion 3. 22.
  • a center hole 22 a for determining the center is provided on the top surface of the head portion 22.
  • the shank portion 21 serves as an axis of a component to be inserted, and in order to realize smooth movement, the shank portion 21 may have a shape in which a groove or a flat portion that can hold grease or the like is provided.
  • the shank portion 21 has a diameter larger than the diameter of the end portion on the shank portion side of the caulking shaft portion 3, and the end portion on the caulking shaft portion 3 side of the shank portion 21 is caulked shaft portion via a shoulder portion 23 that forms a step. 3 is connected.
  • the shoulder portion 23 is configured by an annular flat surface that is orthogonal to the central axis of the stud portion 2.
  • the caulking shaft portion 3 includes a knurled portion 5, a rounded portion 55 a that gradually increases in diameter from the upper end of the knurled portion 5 toward the shoulder portion 23 of the shank portion 21, and a knurled portion. 5 and a tapered portion 53 that gradually decreases in diameter from the lower end to the lower side.
  • the position of the connection end of the rounded portion 55a with the shoulder portion 23 is the end portion position of the caulking shaft portion 3 on the shank portion 23 side. As illustrated in detail in FIGS.
  • the knurled portion 5 is a portion that is fixed to the pilot hole 101 of the thin metal plate 100 as an example of a member to be fixed, and is a protruding line 51 that extends in the axial direction. Are formed in the circumferential direction.
  • the cross-sectional shape of the ridge 51 in the direction perpendicular to the axis (perpendicular to the center axis of the stud bolt) is a triangular mountain shape, and the ridges 51 are repeatedly formed at a predetermined pitch in the circumferential direction.
  • the outer diameter D1 at the distal end in the radial direction of the ridge 51 is larger than the hole diameter D0 of the prepared hole 101 of the metal thin plate 100 to be fixed (D1> D0), and is a knurling process that is the diameter on the base side of the ridge 51.
  • the inner diameter D2 of the portion 5 is smaller than the hole diameter D0 of the prepared hole 101 (D0> D2) (FIG. 2B).
  • the inner diameter D2 of the knurled portion 5 is set larger than the outer diameter (nominal diameter) d of the complete thread 41 of the screw shaft portion 4.
  • the number of ridges 51 of the ridges 51 is preferably set to 16 to 40 ridges in consideration of the joining state of the metal thin plate 100 when the pilot hole 101 is inserted into the metal thin plate 100.
  • the end of the knurled portion 5 on the stud portion side is an annular portion 55 to which the ends of the ridges 51 are connected.
  • the valley 52 between the ridges 51 and the ridges 51 has a knurled portion 5.
  • a triangular inclined portion 52a having a gradually increasing diameter from the axially intermediate portion toward the axial stud portion side is provided.
  • the inclined portion 52a is expanded to the height of the ridge 51 and connected to the annular portion 55, and the annular portion 55 is connected to the shoulder portion 23 via the rounded portion 55a.
  • the taper portion 53 is configured to reduce the diameter so that the diameter gradually decreases from the end on the screw shaft portion 4 side of the knurled portion 5 toward the tip of the screw shaft portion 4, and the knurled portion 5 is a thin metal plate.
  • the end surface of the ridge 51 on the screw shaft portion 4 side also has a tapered shape that continues to the taper portion 53, the valley portion 52 is opened to the screw shaft portion side, and the boundary between the taper portion 53 and the knurled portion 5.
  • the part has a zigzag shape with ridges 51 and valleys 52.
  • the end on the screw shaft side is caulked by a predetermined length in the axial direction.
  • the length L1 from the shoulder 23 of the stud 2 to the end of the knurled portion 5 is a metal thin plate 100 as a base material. It is necessary to make it longer than the plate thickness t (L1> t).
  • the threaded shaft portion 4 gradually increases in height from the parallel thread portion 4A in which the complete thread 41 of the male thread is formed, the neck portion 4B having no thread, and the neck portion 4B toward the parallel thread portion 4A.
  • a transition screw portion 4C in which an introduction screw thread 42 having an outer diameter that satisfies the JIS standard value is formed, and a round portion 4D that connects the neck portion 4B and the taper portion 53 are provided.
  • the starting position of the introduction screw thread 42 is preferably set so that the distance L2 from the shoulder portion 23 of the stud portion 2 is within two pitches in order to ensure a perfect thread engagement ratio with the female thread component.
  • the diameter of the neck portion 4B without the screw and the valley diameter d2 of the transition screw portion 4C are smaller than the minimum inner diameter value of the female screw JIS standard value.
  • FIG. 1A is a front view showing a partially broken metal sheet
  • FIG. 1B is a partially enlarged view seen from the direction B of FIG. 1A
  • FIG. C line sectional view (D) is a DD line sectional view cut along the valley of (B).
  • the stud bolt 1 is press-fitted and fixed to the fixing hole 110 of the metal thin plate 100, which is a thin plate base material, with the caulking shaft portion 3 being rotatably inserted into the shank portion 21 of the stud portion 2.
  • the stud portion 2 protrudes from one surface of the thin plate 100 and the screw shaft portion 4 protrudes from the other surface.
  • the thickness of the component 300 in the axial direction is shorter than the length of the shank portion 21, the shoulder portion 23 of the shank portion 21 contacts one plate surface of the thin metal plate 100, and the component 300 that is rotatably mounted on the shank portion 21 is The axial movement is regulated by the head portion 22 of the stud portion 2 and the metal thin plate 100.
  • the inner peripheral shape of the fixing hole 110 is a shape that follows the shape of the knurled portion 5, and is formed by press-fitting the knurled portion 5 of the stud bolt 1 into the prepared hole 101 of the thin metal plate 100.
  • the inner peripheral shape of the fixing hole 110 is formed with a plurality of axial grooves 112 in the circumferential direction in which the ridges 51 of the knurled portion 5 are closely fitted, and between the axial grooves 112 and the axial grooves 112, An inner peripheral convex portion 111 that is closely fitted to the valley portion 52 of the knurled portion 5 is formed. Furthermore, an inner peripheral inclined portion 111 a is formed at the end of the inner peripheral convex portion 111 on the stud portion side so that the inclined portion 52 a of the knurled portion 5 is in close contact with the inner peripheral convex portion 111.
  • a protruding portion 54 that protrudes radially outward and engages with the peripheral portion of the fixing hole 110 on the plate surface of the metal thin plate 100 on the screw shaft portion side is provided at the end of the protrusion 51 on the screw shaft portion side.
  • the thin metal plate 100 is fixed between the projecting portion 54 and the shoulder portion 23 of the stud portion 2 so as to be sandwiched in the axial direction.
  • the rounded portion 55a located at the stud portion side end of the caulking shaft portion 3 bites into the opening edge on the stud portion side of the fixing hole 110 of the thin metal plate 100, and the shoulder portion 23 is on the stud portion side of the thin metal plate 100. Touch the plate surface.
  • annular recess 102 that can be recessed locally together with the overhanging portion 54 is formed at the peripheral edge of the fixing hole 110 of the thin metal plate 100.
  • the inner diameter D3 of the annular recess 102 is larger than the inner diameter D2 of the knurled portion 5 (FIG. 1 (D)) and smaller than the outer diameter D1 (FIG. 1 (C)).
  • the outer diameter D4 of the annular recess 102 is larger than the outer diameter D1 of the knurled portion 5 (FIG. 1C).
  • the overhang portion 54 is a portion formed by caulking the end of the ridge 51 on the screw shaft portion side, and the top portion of the ridge 51 is cut from the overhang portion 54 to the tip of the screw shaft portion side during caulking.
  • the arcuate surface constitutes a part of the inner peripheral wall of the annular recess 102.
  • the caulking die 200 used for the caulking structure of the stud bolt 1 will be described with reference to FIG.
  • the caulking die 200 is a cylindrical body having a hole 201 having a circular cross section into which the screw shaft portion 4 of the stud bolt 1 can be inserted, and the opening of the hole 201 that opens to the end surface on the side where the screw shaft portion 4 is inserted.
  • An annular projection 202 protrudes from the edge.
  • the inner diameter of the annular convex portion 202 is the same as the inner diameter Da of the hole 201, is smaller than the outer diameter D1 of the knurled portion 5, and is larger than the inner diameter D2.
  • the caulking die 200 has an inner diameter Da that is larger than the screw outer diameter d of the screw shaft portion 4, and the mouth is generally provided with a radius R that is approximately the same as the top of the screw thread of the bolt.
  • the outer diameter Db of the annular convex portion 202 is smaller than the outer diameter Ds of the shank portion 21 of the stud portion 2 and larger than the outer diameter D1 of the knurled portion 5.
  • the height T1 of the annular convex portion 202 protruding from the mold surface 200a is about 10% to 50% of the thickness of the base metal thin plate 100.
  • the knurled portion 5 bites into the inner wall of the prepared hole 101 of the thin metal plate 100 as a base material, and the knurled portion 5 protruding in the plate thickness direction is installed to expand in the radial direction.
  • the inflated projecting portion 54 of the knurled portion 5 and the shoulder portion 23 of the stud portion 2 even if the thickness of the metal thin plate 100 is thin, it can be firmly joined.
  • FIG. 5 is an enlarged view of the vicinity of each part of the knurl during caulking.
  • 5A and 5B correspond to the position of FIG. 4B, and the edge portion 101a on the stud portion side of the pilot hole 101 of the thin metal plate 100 is located on the end surface of the ridge 51 on the screw shaft portion side. The contact state is shown. Even if the lower hole 101 of the thin metal plate 100 and the center axis of the stud bolt 1 are misaligned, the taper portion 53 automatically aligns and the edge of the lower hole 101 is positioned at an intermediate position between the inner diameter and outer diameter of the ridge 51. .
  • the inner diameter of the annular convex portion 202 of the caulking die 200 is the same as the hole diameter D0 of the pilot hole 101 of the metal thin plate 100, but it is not necessary to be the same. If it compresses with a press in this state, as shown to FIG.5 (C), (D), the knurl process part 5 will be press-fitted in the inner wall of the pilot hole 101 of the metal thin plate 100 used as a base material. By this press-fitting, the inner periphery of the pilot hole 101 of the thin metal plate 100 is plastically deformed following the shape of the knurled portion 5, the axial groove 112 corresponding to the ridge 51 of the knurled portion 5, and the valley of the knurled portion 5.
  • An inner peripheral convex portion 111 corresponding to the portion 52 is formed.
  • the ridges 51 of the knurled portion 5 are closely fitted in the axial groove 112, and the inner peripheral convex portion 111 is closely fitted in the valley 52, and the torque resistance in the torsional direction is improved. Secured.
  • the inner peripheral convex portion 111 bites into the inclined portion 52a of the knurled portion 5 in a wedge shape to form the inner peripheral inclined portion 111a, and the close contact degree of the inner peripheral convex portion 111 is increased and caulking is performed.
  • the opening edge of the annular convex portion 202 of the mold 200 abuts on the end surface of the screw shaft portion 4 of the knurled portion 5.
  • a portion having a diameter larger than the hole diameter Da of the caulking die in the ridge 51 of the knurled portion 5 is set on the stud portion 2 side. The caulking starts.
  • a protruding portion 54 that protrudes in the radial direction is formed at the end of the ridge 51 of the knurled portion 5 on the screw shaft portion side.
  • the protruding portion 54 increases in the radial direction, and enters the wedge shape between the tip surface of the annular convex portion 202 and the contact surface of the metal thin plate 100.
  • press fitting and caulking can be performed while the end surface of the annular convex portion 202 of the caulking die 200 and the flat surface of the die surface 200a and the shoulder portion 23 of the stud portion are in contact with each other. There will be no deformation.
  • the thickness of the thin metal plate 100 used for this processing is 1 mm or less, and the thickness is 1 pitch or less of the applied screw.
  • board thickness t of the metal thin plate 100 is restrict
  • FIG. 7 the structural example of the structure used for the test is shown.
  • a fastening plate 310 is overlapped on the metal thin plate 100 of the assembly of the stud bolt 1 and the metal thin plate 100 on which the component 300 is mounted, and is fastened and fixed with a nut 320.
  • the torsional strength at the time of fastening and the required joint strength for use were satisfied as follows.
  • the average is 0.33 kN (min 0.25 kN to max 0.41 kN). In the present invention, the average was 0.70 kN (min 0.68 kN to max 0.72 kN). ⁇ Bending load in the direction perpendicular to the axis With only the press-fitting of the knurled part 5, the average is 0.56 kN (min 0.50 kN to max 0.61 kN), In the present invention, the average was 0.77 kN (min 0.72 kN to max 0.84 kN).
  • the stud portion 2 includes the columnar shank portion 21 that slides and guides the component 300 and the head portion 22 having a larger diameter than the shank portion 21, and the shoulder portion 23 of the stud portion 2.
  • the configuration of the stud portion 2 can be various as shown in FIGS. 8 (A) to (H).
  • the same components as those in FIG. 1 are denoted by the same reference numerals and description thereof is omitted.
  • the shank portion 21 into which the component 300 is rotatably inserted has a two-stage shape of a large-diameter cylindrical first shank 21A and a small-diameter cylindrical second shank 21B.
  • FIGS. 8B and 8C show another embodiment 2
  • FIG. 8B is a front view of a stud bolt showing a part and a thin metal plate in cross section
  • FIG. 8C is a cross-sectional view of the shank portion in the direction perpendicular to the axis. .
  • FIGS. 8B is a front view of a stud bolt showing a part and a thin metal plate in cross section
  • FIG. 8C is a cross-sectional view of the shank portion in the direction perpendicular to the axis.
  • FIG. 8D shows another embodiment 3.
  • the diameter of the shank portion 21D into which a component 300 such as a pulley is inserted is reduced, and the knurled portion 5 is caulked while the collar 26 is inserted. That is, the diameter of the position where the collar 26 of the shank portion 21D exists is reduced, and the shoulder portion 23 connected to the knurled portion 5 is eliminated from the shank portion 21 of FIG.
  • FIGS. 8E and 8F show another embodiment 4, FIG. 8E is a front view of a stud bolt showing a part and a thin metal plate in section, and FIG. 8F is a plan view of the stud bolt.
  • the planar shape of the head portion 22E is not a circle but a square shape with round corners.
  • Other form 5 In FIG.
  • a flange portion 29 having a diameter larger than that of the shank portion 21 is provided below the shank portion 21 where the component 300 such as a pulley is located.
  • the metal sheet 100 is caulked at the knurled portion 5 below the flange 29.
  • a cylindrical projection 27 is provided at the upper end of the shank portion 21, has an inner diameter larger in diameter than the projection 27, and has an outer diameter larger than that of the shank portion 21.
  • a washer 302 having a diameter is caulked while the projection 27 is deformed, and the component 300 is sandwiched between the shank part 21. The washer 302 is fixed simultaneously with caulking of the knurled portion 5 to the metal thin plate 100.
  • a flange portion 29 having a diameter larger than that of the shank portion 21 is provided below the shank portion 21 into which the component 300 is fitted.
  • the knurled portion 5 is caulked to the thin metal plate 100.
  • a recess 28 is provided at the upper end of the shank portion 21, and the peripheral portion 28 a of the recess 28 is plastically deformed so as to be larger than the outer diameter of the shank portion 21, so that the component 300 is sandwiched between the shank portion 21. It has become.
  • the fixing of the component 300 is also performed simultaneously with the caulking of the knurled portion 5 to the metal thin plate 100.
  • FIG. 9 shows a fixing structure between the stud bolt and the member to be fixed (metal thin plate).
  • the shank portion 21D supports the component 300 via the collar 26 so as to be slidable and slidable.
  • the diameter of the shank portion 21D is the end of the caulking shaft portion 3 on the shank portion 21D side.
  • the circular shape is the same as the maximum diameter of the round portion 55a.
  • the collar 26 has a cylindrical shape, the axial length is the same as the axial length of the shank portion 21D, and one end face 26b of the collar 26 contacts the head portion 22 while being fixed to the thin metal plate 100, and the other The end surface 26 a of the metal plate 100 is in contact with the plate surface of the metal thin plate 100 on the stud portion 2 side.
  • the thin metal plate 100 is sandwiched between the end surface 26a of the collar 26 on the caulking shaft portion side and the protruding portion 54 in the axial direction. 9 is compared with FIG. 1, the portion corresponding to the shoulder portion 23 of the stud portion 2 of FIG. 1 is replaced with a collar 26 fitted to the outer periphery of the shank portion 21 ⁇ / b> C.
  • the collar 26 is frictionally engaged with the outer periphery of the shank portion 21D and has a shaft depending on its own weight. It is good also as a fitting dimension of the grade which does not move to a direction.
  • a press not shown
  • the knurled portion 5 is formed in the inner periphery of the pilot hole 101 of the metal thin plate 100. While being press-fitted, the axial end of the knurled portion 5 projecting toward the screw shaft 4 side of the pilot hole 101 is fixed so as not to be relatively movable in the torsional direction and the axial direction (FIG.
  • the thin metal plate 100 is sandwiched between the protruding portion 54 and the lower end surface 26 a of the collar 26, and the peripheral portion of the pilot hole 101 of the thin metal plate 100 is locally recessed together with the protruding portion 54 to form an annular recess. 102 is formed. Note that the details of the caulking process of the knurled portion 5 are merely replacing the shoulder portion 23 of the above-described embodiment shown in FIG.
  • the mounting strength of the component 300 to the metal thin plate 100 of the stud bolt 1 can be improved, and further, the fastening strength when the structure is fastened to the fastening plate can be improved. Can be secured, and weight reduction around the parts can be achieved. Further, when fastening to various fastening plates using the screw shaft portion 4 at the tip, the plate thickness can be fastened even with a thickness of one pitch or less of the applied screw.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

L'invention concerne une structure de fixation pour un goujon et un élément fixé, un procédé de fixation, et un goujon employant une structure de telle sorte que le goujon peut être fixé solidement à l'élément fixé et qu'une partie sertie ne fait pas saillie à partir de la surface de plaque de l'élément fixé. De multiples saillies 51 s'étendant dans la direction axiale sont disposées dans la direction circonférentielle sur une section arbre de sertissage 5 ; la section arbre fileté 4 du goujon 1 est introduite dans un trou pilote 101 dans une plaque mince métallique, et la section arbre de sertissage 5 est ajustée par pression contre la circonférence intérieure du trou pilote 101 de la plaque mince métallique 100, amenant ainsi les saillies 51 à mordre dans la circonférence intérieure du trou pilote 100 ; grâce au sertissage de la partie d'extrémité faisant saillie sur le côté arbre fileté du trou pilote 100, une partie en surplomb 54 s'avançant dans la direction radiale est formée ; la plaque mince métallique 100 est serrée dans la direction axiale entre la partie en surplomb 54 et une section épaulement 23 d'une section de goujon 2 ; et en outre, un évidement annulaire 102 est formé par indentation locale du bord périphérique du trou pilote 101 de la plaque mince métallique 100 avec la partie en surplomb 54.
PCT/JP2018/015334 2017-04-13 2018-04-12 Structure de fixation pour goujon et élément fixé, procédé de fixation et goujon WO2018190393A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017079640A JP6247417B1 (ja) 2017-04-13 2017-04-13 スタッドボルトと被固定部材との固定構造、固定方法及びスタッドボルト
JP2017-079640 2017-04-13

Publications (1)

Publication Number Publication Date
WO2018190393A1 true WO2018190393A1 (fr) 2018-10-18

Family

ID=60659016

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/015334 WO2018190393A1 (fr) 2017-04-13 2018-04-12 Structure de fixation pour goujon et élément fixé, procédé de fixation et goujon

Country Status (2)

Country Link
JP (1) JP6247417B1 (fr)
WO (1) WO2018190393A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019188881A (ja) * 2018-04-19 2019-10-31 株式会社デンソー ボールジョイント及びワイパ装置
JP7373261B2 (ja) * 2019-07-31 2023-11-02 日東精工株式会社 圧入ねじの取付方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865590U (ja) * 1981-10-27 1983-05-04 セイコーインスツルメンツ株式会社 小型電子装置の構造
JPS6011710A (ja) * 1983-06-30 1985-01-22 豊生ブレ−キ工業株式会社 金属板材に対するボルトの固定方法
JPH0585767B2 (fr) * 1987-12-15 1993-12-08 Jidosha Kiki Co
US6607339B1 (en) * 1998-05-08 2003-08-19 Bas Components Limited Fixing pulley wheels to plate-like structures
WO2007139048A1 (fr) * 2006-05-30 2007-12-06 Bosch Corporation Goujon fileté, structure d'installation de goujon fileté et dispositif d'amplification de force l'utilisant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171213U (ja) * 1983-04-30 1984-11-15 日本ビクター株式会社 回動部材の取付け構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865590U (ja) * 1981-10-27 1983-05-04 セイコーインスツルメンツ株式会社 小型電子装置の構造
JPS6011710A (ja) * 1983-06-30 1985-01-22 豊生ブレ−キ工業株式会社 金属板材に対するボルトの固定方法
JPH0585767B2 (fr) * 1987-12-15 1993-12-08 Jidosha Kiki Co
US6607339B1 (en) * 1998-05-08 2003-08-19 Bas Components Limited Fixing pulley wheels to plate-like structures
WO2007139048A1 (fr) * 2006-05-30 2007-12-06 Bosch Corporation Goujon fileté, structure d'installation de goujon fileté et dispositif d'amplification de force l'utilisant

Also Published As

Publication number Publication date
JP6247417B1 (ja) 2017-12-13
JP2018179144A (ja) 2018-11-15

Similar Documents

Publication Publication Date Title
JP3491279B2 (ja) かしめナットおよびその製造方法
US20060067804A1 (en) Deforming member and captive fastener retaining method
RU2477816C2 (ru) Единое цельное радиально сминаемое обжимное кольцо и способ его изготовления
US7088297B2 (en) Vehicle roof antenna attachment
JP5976984B2 (ja) 盲鋲素子及びその使用方法
JP5711593B2 (ja) ブラインドリベット及びその締結方法
US8011076B2 (en) Swage collar with internal sealing insert
EP2166237B1 (fr) Boulon de rivet
US20110097172A1 (en) Clinch Pin Fastener
EP1361370A1 (fr) Un rivet aveugle
US20150322994A1 (en) Nut or other insert with torque and pullout resistance
WO2018190393A1 (fr) Structure de fixation pour goujon et élément fixé, procédé de fixation et goujon
US20120324978A1 (en) Clinch Pin Fastener
EP0677666B1 (fr) Rivet aveugle
US5102274A (en) Blind fastener
CN111425511A (zh) 用于具有扩张索环的捕获式紧固件组件的装置
US20050180841A1 (en) Bund nuts
WO1994012799A1 (fr) Fixation aveugle
JP2022507054A (ja) 薄いシート素材用ファスナー
JPH0235223A (ja) 自在継手および自在継手用フォークの製造方法
US20180333770A1 (en) Method, structure and tool of riveting sheet
JP5973817B2 (ja) 締結構造及び自動車
JP5757188B2 (ja) 薄板の連結構造
US20220235811A1 (en) Self-Punching Functional Element, Component Assembly and Method of Manufacturing a Component Assembly
JP3199574B2 (ja) 結合方法および結合構造

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18784539

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18784539

Country of ref document: EP

Kind code of ref document: A1