WO2021095228A1 - Élément de fixation temporaire - Google Patents

Élément de fixation temporaire Download PDF

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Publication number
WO2021095228A1
WO2021095228A1 PCT/JP2019/044854 JP2019044854W WO2021095228A1 WO 2021095228 A1 WO2021095228 A1 WO 2021095228A1 JP 2019044854 W JP2019044854 W JP 2019044854W WO 2021095228 A1 WO2021095228 A1 WO 2021095228A1
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WO
WIPO (PCT)
Prior art keywords
temporary fastener
hole
temporary
rear end
inner shaft
Prior art date
Application number
PCT/JP2019/044854
Other languages
English (en)
Japanese (ja)
Inventor
幹生 守山
Original Assignee
サーミット工業株式会社
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 サーミット工業株式会社 filed Critical サーミット工業株式会社
Priority to PCT/JP2019/044854 priority Critical patent/WO2021095228A1/fr
Priority to JP2019570591A priority patent/JP6656652B1/ja
Publication of WO2021095228A1 publication Critical patent/WO2021095228A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B31/00—Hand tools for applying fasteners
    • 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
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • 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
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips

Definitions

  • the present invention relates to a temporary fastener that holds a state in which a plurality of plate-shaped bodies are stacked.
  • the present invention relates to a temporary fastener in which a shaft body of a temporary fastener is inserted into a aligned hole of the stacked plate-shaped bodies, and the plate-shaped body is sandwiched between the front end and the rear side of the shaft body to be temporarily fastened. More specifically, the moment of inertia of the rotated portion of the temporary fastener is small, the driving force transmission portion can be easily attached to the rotated portion, the work efficiency is good, the temporary fastener is easy to pull out, and the temporary fastener is hard to loosen. Regarding.
  • a temporary fastener is a fastener that is used for temporary assembly before assembling a plurality of plate-shaped bodies into an overall shape, and is removed and reused after the assembly is completed. For example, when assembling a large structure such as an aircraft wing, pre-drilled holes are aligned in the stacked plate-like bodies so that each component is in a predetermined position, and temporarily fastened to the holes. Temporarily assemble by inserting and fastening the tools. Then, a hole used for the main fastening is formed, the rivet shaft body is inserted into the hole and plastically deformed, and the rivet is joined to perform the main fastening. After the main fastening is performed, the temporary fastener is pulled out from the hole, the rivet shaft body is inserted into the hole, and the rivet is joined to form the assembled state.
  • the temporary fastener has a temporary fastening type in which a thin cylinder forming the temporary fastener inserted into the hole is expanded by an inner shaft body inserted from the rear, or an inner shaft body pulled in from the front. There is a temporary fastening format that is expanded. Further, there are a temporary fastening type in which the plate-shaped body is sandwiched back and forth by an overhanging holding portion formed at the tip of the thin cylinder, and a temporary fastening type in which the position is held by friction on the peripheral surface of the thin cylinder.
  • the temporary fastening tool of the present invention belongs to the temporary fastening type in which the inner shaft body is pulled in from the front to the rear to fasten the plate-shaped body.
  • the temporary fastener advances and retreats the inner shaft body, which is called a collet and has a split tip, and the inner shaft body which is inserted into the thin cylinder called a mandrel.
  • It belongs to the temporary fastening type in which the plate-shaped body is sandwiched and fastened by the overhanging holding portion formed on the outer surface of the tip end portion of the thin cylinder and the front end surface of the main body of the temporary fastener.
  • it is not limited to this.
  • a rotated portion is provided at the rear end portion of the temporary fastener, and the rotated portion is rotated by a driving force transmission portion of a power-type rotating tool. Therefore, the temporary fasteners are temporarily fastened or temporarily fastened.
  • Patent Document 1 discloses a technique of a temporary fastener including a first nut for advancing and retreating the inner shaft body and a second nut for advancing and retreating the thin cylinder body. According to the technique described in Patent Document 1, the inner shaft body is moved back and forth with respect to the thin cylinder body by rotating the first nut at the rear end of the temporary fastener. Further, the thin cylinder whose front portion is expanded due to the retreat of the inner shaft body is moved back and forth integrally with the inner shaft body by rotating the second nut on the side surface of the main body.
  • Patent Document 2 discloses a technique of a temporary fastener for advancing and retreating an inner shaft body having a female threaded portion screwed to the bolt shaft by rotating a bolt shaft as a rotated portion.
  • the temporary fastener described in Patent Document 2 since the rotated portion rotated by the rotating tool is the entire bolt shaft, a rotating tool having a large moment of inertia and a large driving force is required. There was a problem that there was.
  • Patent Document 3 discloses a technique of a temporary fastener in which a long nut provided at the rear end of a main body portion is used as a rotated portion and the inner shaft body is moved forward and backward by rotating the long nut. ..
  • a rotating tool having a large moment of inertia of a long nut and a large driving force is required.
  • Patent Document 1 US Pat. No. 6,056,283
  • Patent Document 2 International Publication No. 2019-073316
  • Patent Document 3 US Patent Publication No. 2018-001709094
  • the inventor of the present application has a small moment of inertia of the rotated portion of the temporary fastener, makes it easy to attach the driving force transmitting portion to the rotated portion, has good work efficiency, is easy to pull out, and is hard to loosen the temporarily fastened state.
  • the challenge was to provide temporary fasteners.
  • the front side of the temporary fastener is referred to as the front side
  • the rotating portion side is also referred to as the rear side.
  • the first invention of the present invention is a temporary fastener for holding a state in which a plurality of plate-shaped bodies are stacked, wherein an inner shaft body having a rear male screw portion at a rear end, a main body penetrated by a first through hole, and a main body. Temporary temporary fastening of the plurality of plate-shaped bodies by inserting the inner shaft body into the aligned holes of the plurality of plate-shaped bodies and retracting the rear end rotating portion and the urging means to temporarily fasten the plurality of plate-shaped bodies.
  • a rear member which is a fastener and has a front member having a recessed portion whose rear end rotating portion is penetrated back and forth by a second through hole, and a tubular portion and a rear nut which are penetrated by a third through hole.
  • the recessed portion is fixed to the main body so that the shaft cores of the first through hole, the second through hole, and the third through hole are aligned with each other, and the tubular portion is inserted into the second through hole.
  • the rear member is rotatably connected to the front member, the inner surface of the third through hole has a female threaded portion, and the female threaded portion and the rear male threaded portion
  • the urging means brings the rear end of the rear male screw portion into contact with the front end of the female screw portion, and the rear member with respect to the front member. It is characterized by being swingable.
  • the rear end rotating portion which is the rotated portion to be rotated by the rotating tool, is a rear member having a tubular portion and a rear nut, and is used as the rear member.
  • the connected front member is used as a member to be attached to the main body of the temporary fastener, and the rear member is rotatably attached to the main body.
  • the rear end of the rear male screw portion is set to the front end of the female screw portion of the rear member by urging means. Is in contact with. Therefore, the workability of the temporary fastening work is good because the inner shaft body is retracted without idling only by inserting the temporary fastener into the hole of the plate-shaped body and then rotating the rear member.
  • the rear end portion of the rear male thread portion is only in contact with the thread of the female thread portion of the rear member by the urging means, and the rear end portion of the screw thread of the rear male thread portion is simply contacted. Since the front end of the thread of the female thread is not screwed together, the rear member can swing laterally with respect to the front member.
  • the moment of inertia of the rear nut forming the rotated portion can be reduced, it can be temporarily fastened with a small rotating tool, and the battery can be temporarily fastened even when an electric tool is used.
  • the number of exchanges is reduced.
  • the rear nut is rotated to temporarily fasten it, no idling occurs, and when the rear nut is rotated in the opposite direction to release the temporary fastening, it can be easily determined that the temporary fastening has been released. Workability is good.
  • the rear nut is swung sideways, it is easy to attach the driving force transmitting portion of the rotating tool to the rear nut even from a slightly diagonally rearward position, which has an unprecedented advantageous effect of good work efficiency.
  • the rear male screw portion in the temporary fastener of the first invention, is provided with a shaft portion having a diameter smaller than that of the male screw portion at the rear end, and the shaft portion is provided in the third through hole. It is characterized by being in the inserted state.
  • the small-diameter shaft portion provided at the end of the rear male screw portion is in a state of being inserted into the third through hole, so that the temporary fastener is released.
  • the shaft core of the inner shaft body does not deviate from the shaft core of the third through hole, and the rear male threaded portion is smoothly screwed into the female threaded portion, which improves the workability of temporary fastening and prevents the thread from being crushed. It works.
  • a third aspect of the present invention in the temporary fastener of the first or second invention, between the rear end surface of the front member and the rear nut in a state where the tubular portion is inserted into the second through hole.
  • the outer surface of the tubular portion located in the above portion is a recess, and a disc spring is mounted in the recess.
  • the rear nut When the rear nut is rotated so as to be temporarily fastened, the rear nut advances as the inner shaft body is pulled backward, and the tubular portion forming the rear member is invaded into the depressed portion of the front member, and the front side. The width of the recess between the rear end surface of the member and the front end surface of the rear nut is reduced. In the temporarily fastened state, the width of the recess is reduced, and a pressing force is generated on the disc spring mounted on the recess.
  • the plate-shaped bodies may be overlapped and temporarily fastened with a sealing material in between.
  • the disc spring thinned by the pressing force becomes thicker.
  • the state in which the temporary fasteners are sandwiched between the front surface and the rear surface of the plate-shaped body is maintained, and the temporary fastening state is not loosened, which is an unprecedented advantageous effect.
  • the fourth invention of the present invention is characterized in that, in the temporary fastener of the third invention, a plurality of disc springs are mounted in the recesses, and the urging forces of the respective disc springs are different.
  • a plurality of disc springs having different urging forces are mounted in the recesses, when the distance between the front surface and the rear surface of the plurality of plate-like bodies changes due to shrinkage of the sealing material or the like.
  • the thickness of the disc spring having a large urging force is increased, which has an advantageous effect that the temporarily fastened state can be easily determined from the appearance state of the plurality of disc springs.
  • a fifth aspect of the present invention is the temporary fastener of the first to fourth inventions, wherein the temporary fastener is divided in the axial direction from the tip to the central portion, and the tip portion is formed with an overhanging holding portion.
  • the inner shaft body includes a thin cylinder body having the divided pieces, and the inner shaft body has a shaft portion main body and a tip inclined portion whose diameter is expanded toward the front end of the rear male screw portion, and the plurality of plates.
  • Temporary fastener that inserts the thin cylinder into the aligned holes of the shape, retracts the thin cylinder as the inner shaft retracts, expands the divided piece, and temporarily fastens the divided piece.
  • the position of the front end of the female threaded portion is the periphery of the rear end surface of the tip inclined portion and the periphery of the tip surface of the thin cylinder. It is characterized in that it is in a position where it does not come into contact with.
  • the temporary fastener includes, in addition to the inner shaft body, a thin tubular body having a divided piece divided in the axial direction from the tip to the center portion, and allows the inner shaft body to move forward and backward.
  • the thin cylinder is moved back and forth along with it to temporarily fasten or release the temporary fastening.
  • the divided pieces of the thin cylinder body are expanded by the inclined portion whose diameter is reduced toward the rear side.
  • the split piece is expanded, the overhanging holding portion around the tip of the thin cylinder is extended laterally, and the overhanging holding portion facing the plate-shaped body and the main body of the temporary fastener facing the plate-shaped body.
  • the position of the front end of the female threaded portion does not contact the periphery of the rear end surface of the tip inclined portion with the periphery of the tip surface of the thin cylinder. Since it is in the position, the overhanging holding portion around the tip of the thin cylinder is not expanded laterally. As a result, when the overhanging holding portion of the thin cylinder is expanded by the inner shaft body and temporarily fastened, the overhanging holding portion is less likely to be caught in the hole of the plate-shaped body and temporarily fastened from the hole formed by the plate-shaped body. It has the effect of making it easy to pull out the ingredients.
  • both the front member and the rear member have a regular hexagonal cross-sectional shape, and the rear member is outside the regular hexagonal shape.
  • the diameter is smaller than the outer diameter of the regular hexagonal shape of the front member.
  • both the front member and the rear nut forming the rear end rotating portion have a regular hexagonal cross section, and the outer diameter of the front member is larger than the outer diameter of the rear nut.
  • a non-rotating cylinder having a regular hexagonal cross-sectional shape is arranged on the front side, and the same axis as the non-rotating cylinder is placed inside the rear of the non-rotating cylinder.
  • the non-rotating cylinder on the front side of the rotating tool is attached to the front member, and the rotating cylinder inside the rear is attached to the rear nut and rotated while the rotation of the temporary fastener is suppressed.
  • the effect is that the temporary fastening work can be performed easily and efficiently.
  • the first invention of the present invention it can be temporarily fastened with a small rotating tool, and the number of times the battery is replaced is reduced even when an electric tool is used. Further, since the rear nut is swung sideways, it is easy to attach the driving force transmitting portion of the rotating tool to the rear nut even from a slightly diagonally rearward position, which has an unprecedented advantageous effect of good work efficiency.
  • the rear male threaded portion is smoothly screwed into the female threaded portion, and the workability of temporary fastening is good and the thread is not easily crushed.
  • the third invention of the present invention the state in which the temporary fasteners are sandwiched between the front surface and the rear surface of the plate-like body is maintained, and the temporary fastening state is not loosened, which is an unprecedented advantageous effect.
  • the state of temporary fastening can be easily determined from the state of appearance of a plurality of disc springs.
  • the overhanging holding portion of the thin cylinder is expanded and temporarily fastened by the inner shaft body, the overhanging holding portion is less likely to be caught in the hole of the plate-shaped body. It has the effect of making it easier to pull out the temporary fastener from the hole formed by the plate-shaped body.
  • the non-rotating cylinder on the front side of the rotating tool is attached to the front member, and the rotating cylinder inside the rear is suppressed in a state where the rotation of the temporary fastener is suppressed. Is attached to the rear nut and rotated, so that the temporary fastening work can be easily and efficiently performed.
  • Explanatory drawing of component and whole composition (Example 1). Explanatory drawing by sectional view of a temporary fastener (Example 1). Explanatory drawing of attachment process of temporary fastener (Example 1). Explanatory drawing of the swing state of the rear end rotating part (Example 1). Explanatory drawing of a temporary fastener to which a disc spring was attached (Example 1). Explanatory drawing of a temporary fastener to which a plurality of disc springs were attached (Example 2). Explanatory drawing (other) which shows other form of a rear male thread part.
  • the rear end rotating portion forming the temporary fastener is composed of a front member and a rear nut, and the rear nut is rotatably connected to the front member to prevent the front member from rotating together with the main body of the temporary fastener.
  • the rear nut was fixed so as to be able to swing laterally with respect to the shaft core with respect to the front member. As a result, the rotating portion of the rotating tool can be easily mounted even from slightly obliquely from the rear of the shaft core with respect to the rotating portion at the rear end.
  • FIG. 1 (A) shows a perspective view of the components before assembling the temporary fastener and the positional relationship of the components.
  • FIG. 1B shows a perspective view illustrating a state in which a part of the temporary fastener is assembled.
  • FIG. 1C shows a perspective view illustrating a state in which the entire temporary fastener is assembled.
  • FIGS. 2 and 5 show the main body of the temporary fastener integrally
  • FIG. 3 shows a cross-sectional view of the temporary fastener 1 showing the main body and the front member of the rear rotating portion integrally.
  • FIG. 2A shows a cross-sectional view of each component in an assembled state.
  • FIG. 2B shows an explanatory view for explaining that when the temporary fastener 1 is pulled out from the hole of the plate-shaped body, the thin cylinder body is pulled out without being expanded.
  • Each figure of FIG. 3 shows an explanatory view explaining a work process of temporary fastening.
  • Each figure of FIG. 4 shows an explanatory view of a swinging body of a rear end rotating portion.
  • FIG. 5 shows an explanatory view of a temporary fastener to which a disc spring is attached.
  • the temporary fastener 1 includes a thin cylinder 10, an inner shaft body 20, a main body 30 of the temporary fastener, a rear end rotating portion 40, and an urging means 50. (See FIG. 2 (A) and FIG. 2 (B)).
  • the thin cylinder 10 includes a divided piece 11 divided into six in the axial direction from the tip to the center, and the tip of each divided piece is provided with an overhanging holding portion 12 overhanging in the outer diameter direction. (See Fig. 1 (A)).
  • each of the divided pieces 11 of the temporary fastener 1 is cut from the central portion of the thin cylinder to the overhanging holding portion 12, so that a thinned tip narrowing portion 13 is formed.
  • the inner surface 14 of the thin cylinder has a constant inner diameter and the same diameter as the outer diameter of the shaft body 21 (see FIG. 2 (A)).
  • the thin cylinder 10 is mounted around the shaft body 21 of the inner shaft 20, and the inner shaft 20 is slidable back and forth in the thin cylinder 10. Further, the rear end portion of the thin cylinder 10 is provided with a locking collar portion 15 projecting in the outer diameter direction.
  • the inner shaft body 20 has a shaft portion main body 21 having a constant outer diameter and the same diameter as the inner diameter of the thin cylinder body, a tip inclined portion 22 whose diameter is expanded toward the front from the shaft portion main body, and a rear male screw. It is composed of a part 23 (see FIG. 2 (A)).
  • a male screw portion 211 is formed at the rear end of the shaft portion main body 21, a hexagonal portion 232 having a female screw hole 231 inside is formed at the front end of the rear male screw portion 23, and a hexagonal portion 232 having an internal female screw hole 231 is formed at the rear end of the screw portion of the rear male screw portion 23.
  • a shaft portion 233 having a small diameter is formed (see FIG. 1 (A)).
  • the male screw portion 211 at the rear end of the shaft portion main body 21 is screwed into the female screw portion 231 of the rear male screw portion 23, and the shaft portion main body 21 of the inner shaft body is a urging means 50 composed of a thin cylinder body 10 and a coil spring.
  • the inner shaft body 20 is integrated through the above (see FIG. 1 (B)).
  • the shape of the tip inclined portion 22 is such that an inclined portion 221 whose diameter is expanded from the front end portion of the shaft portion main body 21 to the front end is formed, and the diameter of the inclined portion 221 is the same as the diameter of the expanded front end.
  • a large diameter portion 222 extending parallel to the shaft of the shaft portion main body 21 is formed (see FIG. 2 (A)).
  • a substantially truncated cone-shaped tip portion 224 having a rear end surface 223 whose rear end surface is orthogonal to the axis is formed.
  • the shape of the tip portion 224 is formed into a two-stage tip constriction shape having a different inclination angle toward the tip, and the tip is more constricted. Further, a groove portion is formed in the tip constricted portion on the front side to form a rotated portion 225. A tool section for assembling and disassembling the temporary fastener is mounted on the rotated section.
  • the main body 30 of the temporary fastener is composed of a main body portion 31 having a male threaded portion on the outer peripheral surface at the front end portion and the rear end portion, and a lid member 32 (see FIGS. 1 (A) and 1 (B)).
  • the lid member 32 has a through hole 321 penetrated in the front-rear direction and a rear inner peripheral surface female screw portion.
  • the outer peripheral surface male screw portion 311 on the tip end side of the main body portion 31 and the rear inner peripheral surface female screw portion of the lid member 32 are screwed and fixed.
  • the through hole 321 at the tip of the lid member 32 and the hole 313 that penetrates the main body 31 are regarded as a hole that penetrates the main body back and forth and is referred to as a first through hole 33 (see FIG. 2 (A)).
  • the hole 313 that penetrates the main body 31 is a hexagonal hole.
  • the inner shaft body 20 is inserted into the main body from the rear so that the front side protrudes from the tip surface of the main body 30 (FIG. 1 (B)). reference).
  • the hexagonal portion 232 at the front end of the rear male screw portion 23 is aligned with the hexagonal hole of the hole 313 penetrating the main body, and is used as a co-rotation suppressing means for suppressing co-rotation.
  • the outer diameter of the locking collar portion 15 of the thin cylinder body 10 is made larger than the inner diameter of the through hole 321 at the tip of the lid member 32 so that the thin cylinder body 10 does not come out from the main body 30 forward.
  • the rear end rotating portion 40 includes a retaining member 41, a front member 42, a disc spring 43, and a rear member 44 (see FIGS. 1 (A) and 1 (B)).
  • the front member 42 has a recessed portion 421 with an open front and a hole 422 penetrated in the front and rear, and a female threaded portion 423 attached to a male threaded portion 312 on the outer peripheral surface of the main body is formed on the inner surface of the depressed portion.
  • the hole through which the front member is penetrated is referred to as the second through hole 45.
  • the rear member 44 has a hexagonal rear nut 441 and a tubular portion 442 projecting in front of the rear nut 441, and has a hole 443 penetrated in the front-rear direction.
  • the hole 443 is a female threaded portion 444 having a female thread formed therein, and the tip of the female threaded portion is a through hole 445 having a diameter larger than that of the female threaded portion 444 lacking the female thread (FIG. 2 (A)). reference).
  • the hole through which the tubular portion and the rear member main body penetrate is referred to as a third through hole 46.
  • a groove portion 446 for mounting the retaining member 41 is formed around the tip of the tubular portion 442 (see FIG. 1 (A)).
  • the rear end rotating portion 40 is inserted into the second through hole 45 of the front member 42 with the disc spring 43 mounted on the tubular portion 442 of the rear member, and is a retaining member from the front of the recessed portion 421 of the front member.
  • the C ring forming 41 is pushed in as a retaining member, locked in the groove 446, and the front member 42, the disc spring 43, and the rear member 44 are integrated (see FIG. 1 (A)).
  • the front member 42 attached to the rear member 44.
  • the periphery of the tubular portion 442 between the rear end surface of the front member 42 and the front end surface of the rear member 44 is a recess 47 (see FIG. 1 (B)).
  • the width of the recess 47 is made larger than the thickness of the disc spring 43, and in the state where the disc spring 43 is not temporarily fastened, the rear member 44 is swung toward the side of the shaft core with respect to the front member 42. (See FIG. 4 (A)).
  • the inner shaft body 20 integrated with the thin cylinder 10 is inserted into the first through hole 33 of the main body 30 from the rear, and the small diameter shaft portion 233 behind the inner shaft body 20 is inside the rear member 44. (See Fig. 2 (A)), the tip of the thread of the female thread 444 and the rear end 234 of the thread of the rear end male thread are in contact with each other.
  • the female threaded portion 423 of the front member of the rear end rotating portion is screwed to the male threaded portion 312 on the outer peripheral surface of the rear end portion (see FIG. 1 (A)), and the temporary fastener is integrated.
  • the axes of the first through hole 33, the second through hole 45, and the third through hole 46 are aligned (see FIG. 2 (A)).
  • a temporary fastener 1 having a thin shaft portion 60 which is assembled so that the thin cylinder body 10 slides with the inner shaft body 20, will be described.
  • the thread of the rear end portion 234 of the rear male thread portion 23 is in a state of being in contact with each other in a state of being separated from the thread of the female thread portion 444 of the rear member 44 of the rear end rotating portion.
  • the coil spring forming the urging means 50 urges the inner shaft body 20 to the rear and the thin cylinder 10 to urge the front. If it is pulled out from the holes of the plate-shaped bodies stacked in this state, it can be easily pulled out rearward because the overhanging holding portion 12 of the thin cylinder 10 is not expanded (FIG. 2B). reference).
  • the coil spring forming the urging means 50 urges the thin cylinder body forward in a state where the temporary fastening is released by rotating the rear end rotating portion 40, and the inner shaft body 20 is urged. It is urged backward so that the thin cylinder 10 does not play in the front-rear direction in the main body 30. Then, the circumference 226 of the rear end surface of the tip inclined portion 22 and the circumference 16 of the tip surface of the thin cylinder 10 are separated by a predetermined distance ⁇ so as not to come into contact with each other. Yes (see Figure 2 (A)).
  • the predetermined distance ⁇ is not limited, but the distance between adjacent threads is preferable.
  • the work process of the temporary fastener 1 will be described with reference to FIG.
  • the work process is performed by using a temporary fastener in a state where the rear end surface circumference 226 of the tip inclined portion and the tip surface circumference 16 of the thin cylinder are separated by a predetermined distance ⁇ .
  • the inner shaft body 20 and the thin cylinder body 10 forming the shaft portion 60 of the temporary fastener 1 are inserted into the holes of the stacked plate-shaped bodies 100 to form the main body.
  • the tip surface 34 of the above is brought into contact with the plate-like body (see FIG. 3 (A)).
  • the rear end rotating portion 40 is rotated while the front member 42 or the main body 30 having a regular hexagonal shape is held by a spanner 120 (see FIG. 4C) or the like to restrict the rotation of the main body. It is rotated by a moving tool 110 (see FIG. 4 (C)) (see FIG. 3 (B)).
  • the inner shaft body 20 is retracted in the first through hole 33 of the main body without being rotated together with the main body 30.
  • the rear end surface circumference 226 of the tip inclined portion comes into contact with the tip surface circumference 16 of the thin cylinder body, and the thin cylinder body 10 is also retracted as the inner shaft body 20 retracts.
  • a part of the tip inclined portion 22 is pulled into the thin cylinder 10, each of the divided pieces 11 is expanded, and the overhanging holding portion 12 is caught in the peripheral edge portion 102 of the hole (FIG. FIG. 3 (B)).
  • the overhanging sandwiching portion 12 comes into contact with the surface 103 of the plate-shaped body 100, and the retreat of the thin cylinder 10 is restricted (see FIG. 3C). ).
  • the rear end rotating portion 40 is further rotated from this state, the rear nut 441 forming the rear end rotating portion is advanced, the distance between the front member 42 and the rear nut 441 is narrowed, and the rear end rotating portion 40 is mounted in the recess 47.
  • the disc spring 43 is pressed.
  • the tip inclined portion 22 is pulled into the thin cylinder 10, each of the divided pieces 11 is completely expanded, and a plate shape is formed between the rear end surface of the overhanging holding portion 12 and the tip surface 34 of the main body. It is assumed that the body 100 is temporarily fastened (see FIG. 3 (D)).
  • the rear end rotating portion 40 When releasing the temporary fastening, the rear end rotating portion 40 is rotated in the direction opposite to the case where the temporary fastening is performed (see FIG. 3 (E)). Then, the inner shaft body 20 and the thin cylinder body 10 are integrally advanced while the tip inclined portion 22 is fitted in the thin cylinder body 10. Further, the distance between the rear nut 441 and the front member 42 is widened, and the pressing of the disc spring 43 mounted on the recess 47 is also released.
  • the screwing between the rear male screw portion 23 and the female screw portion 444 of the rear end rotating portion is released, and the temporary fastening is returned to the released state (see FIG. 3 (A)).
  • the rear end surface circumference 226 of the tip inclined portion and the tip surface circumference 16 of the thin cylinder do not come into contact with each other, and the diameter of the shaft portion 60 is the diameter of the hole 101 of the plate-shaped body (see FIG. 2B). It is narrower than the above and can be easily pulled out from the hole of the plate-like body.
  • FIG. 4A shows a state in which the rear nut is swung.
  • FIG. 4B shows a state in which the socket portion is attached to the rear nut.
  • FIG. 4C shows a state in which the rear nut is rotated.
  • the shaft core (A) of the inner shaft body 20 is indicated by a chain double-dashed line
  • the shaft core (B) of the rear nut 44 is indicated by a chain line
  • the shaft core (C) of the socket portion 111 is indicated by a thin line.
  • the rear member 44 has an inner shaft in which the tubular portion 442 is inserted into the front member 42, is prevented from coming off from the front member by the retaining member 41, and is urged rearward by the urging member 50 (see FIG. 2 (A)). Since it is only pressed against the rear male screw portion 23 of the body, the shaft core (B) of the rear nut 441 forming the rear member can swing laterally with respect to the shaft core (A) of the main body 30. (See FIG. 4 (A)).
  • the shaft core (C) of the socket portion 111 is the shaft core (B) of the rear nut.
  • the shaft core (B) of the rear nut 441 coincides with the shaft core (A) of the main body 30 (see FIG. 4C).
  • FIG. 5A shows a state immediately after the temporary fastening is performed.
  • FIG. 5B shows a state in which the thickness of the disc spring becomes thicker as the sealing material 104 shrinks.
  • the sealing material 104 shrinks. Then, the disc spring 43 becomes thicker by a dimension corresponding to the contracted thickness of the sealing material 104 (see FIG. 5 (B)), and the inner shaft body 20 is urged rearward to urge the fastening force. Do not loosen.
  • FIG. 6 (A) shows the state of the recess in the state where the temporary fastening is released
  • FIG. 6 (B) shows the state where the temporary fastening is released
  • FIG. 6 (C) shows the temporary fastening is slightly loosened. The state is shown
  • FIG. 6 (D) shows a state in which the temporary fastening is loosened.
  • the fastening state of the temporary fastener can be determined only by visual inspection. ..
  • the circumference of the rear end of the rear nut is stepped down, but the tip may be gently narrowed toward the rear.
  • the rear end nut has been described as a hexagon nut, but it goes without saying that the cross-sectional shape is not limited to the hexagon nut.
  • Temporary fasteners 10 ... thin cylinder, 20 ... inner shaft, 30 ... main body, 40 ... rear end rotating part, 50 ... urging means, 60 ... shaft, 11 ... Divided piece, 12 ... Overhanging pinching part, 13 ... Constricted part, 14 ... Inner surface, 15 ... Locking collar, 16 ... Around the tip surface, 21 ... Shaft body, 22 ... Tip inclined part, 23 ... Rear male screw part, 211 ... Male threaded portion, 221 ... Inclined portion, 222 ... Large diameter portion, 223 ... Rear end surface, 224 ... Tip part, 225 ... Rotated part, 226 ... Around the rear end face, 231 ...

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Insertion Pins And Rivets (AREA)
  • Dowels (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un élément de fixation temporaire configuré de telle sorte que : le moment d'inertie d'une partie tournée est petit ; une partie de transmission de force d'entraînement est facilement montée sur la partie retournée ; l'efficacité de travail est satisfaisante ; et l'élément de fixation temporaire est facile à retirer, mais peu susceptible de se détacher de l'état fixé temporairement. La solution selon l'invention porte sur un élément de fixation temporaire qui est composé d'un corps d'arbre interne ayant une partie de fixation à filetage externe vers l'arrière sur l'extrémité arrière, une unité principale de fixation temporaire pénétrée par un premier trou traversant, une partie de rotation d'extrémité arrière, et un moyen de force de ressort, la partie de rotation d'extrémité arrière étant constituée par un élément avant ayant une cavité pénétrante avant-arrière et un élément arrière ayant une partie tubulaire et un écrou arrière, les éléments étant reliés de manière pivotante par l'enfichage de la partie tubulaire dans l'élément avant. En outre, la surface externe de partie tubulaire située entre l'écrou arrière et la face d'extrémité arrière de l'élément avant est rendue avec un évidement, et un ressort à disque est réglé dans l'évidement.
PCT/JP2019/044854 2019-11-15 2019-11-15 Élément de fixation temporaire WO2021095228A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2019/044854 WO2021095228A1 (fr) 2019-11-15 2019-11-15 Élément de fixation temporaire
JP2019570591A JP6656652B1 (ja) 2019-11-15 2019-11-15 仮締結具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/044854 WO2021095228A1 (fr) 2019-11-15 2019-11-15 Élément de fixation temporaire

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WO2021095228A1 true WO2021095228A1 (fr) 2021-05-20

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241507A (ja) * 1985-04-17 1986-10-27 モノグラム　インダストリ−ズ，インコ−ポレ−テツド クランプ装置
JP2005538860A (ja) * 2002-08-30 2005-12-22 マックルアー、トラヴィス ラジアルタイプの仮留め具、そのエレメント及び工具
US20180017094A1 (en) * 2016-07-12 2018-01-18 Zephyr Manufacturing Co., Inc. Temporary fastener with lateral float range

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241507A (ja) * 1985-04-17 1986-10-27 モノグラム　インダストリ−ズ，インコ−ポレ−テツド クランプ装置
JP2005538860A (ja) * 2002-08-30 2005-12-22 マックルアー、トラヴィス ラジアルタイプの仮留め具、そのエレメント及び工具
US20180017094A1 (en) * 2016-07-12 2018-01-18 Zephyr Manufacturing Co., Inc. Temporary fastener with lateral float range

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JP6656652B1 (ja) 2020-03-04

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