WO2009042824A1 - Bouchon de fermeture de trou de filetage interne - Google Patents

Bouchon de fermeture de trou de filetage interne Download PDF

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Publication number
WO2009042824A1
WO2009042824A1 PCT/US2008/077776 US2008077776W WO2009042824A1 WO 2009042824 A1 WO2009042824 A1 WO 2009042824A1 US 2008077776 W US2008077776 W US 2008077776W WO 2009042824 A1 WO2009042824 A1 WO 2009042824A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
closing plug
elastic latching
flange
latching pieces
Prior art date
Application number
PCT/US2008/077776
Other languages
English (en)
Inventor
Kiyoteru Yuta
Takashi Tamaoki
Makoto Hanada
Original Assignee
Newfrey Llc
Toyota Jidosha Kabushiki Kaisha
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 Newfrey Llc, Toyota Jidosha Kabushiki Kaisha filed Critical Newfrey Llc
Publication of WO2009042824A1 publication Critical patent/WO2009042824A1/fr

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Classifications

    • 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
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/06—Releasable fastening devices with snap-action
    • F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
    • F16B21/084—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part with a series of flexible ribs or fins extending laterally from the shank of the stud, pin or spigot, said ribs or fins deforming predominantly in a direction parallel to the direction of insertion of the shank
    • 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
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/06—Releasable fastening devices with snap-action
    • F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
    • F16B21/086—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part the shank of the stud, pin or spigot having elevations, ribs, fins or prongs intended for deformation or tilting predominantly in a direction perpendicular to the direction of insertion
    • 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
    • F16B19/008—Bolts without screw-thread; Pins, including deformable elements; Rivets with sealing means

Definitions

  • This invention relates to a plug member for closing a female threaded hole provided in an automobile body panel or the like, that is, to a female thread hole closing plug.
  • female threaded holes are provided with nuts such as weld nuts provided on the back side thereof, but it is preferable that female threaded holes not required for attaching parts be closed with female thread hole closing plugs in order to prevent the intrusion of foreign matter such as water or refuse.
  • a hole closing plug 1 formed of a soft rubber such as natural rubber or of a soft resin, closes both a threaded hole in a weld nut 3 welded to the back surface of a body panel 2 and a hole 4 in the body panel 2.
  • a hole closing plug 5 having a diameter larger than that of the hole closing plug 1 , formed of a soft rubber such as natural rubber of a soft resin, closes a hole 7 in a body panel 6 that is thicker than the body panel 2 diagrammed in Fig. 2.
  • Patent Literature 1 JIKKAI [Unexamined Utility Model Application Publication] No. H7-
  • Patent Literature 2 JIKKO [Examined Utility Model Application Publication] No. S60-
  • Patent Literature 3 JIKKAI No. S59-174413/1984 (Gazette)
  • Patent Literature 4 JIKKAI No. S60-056810/1985 (Gazette)
  • Patent Literature 5 TOKKAI [Unexamined Patent Application Publication] No. H9-
  • Patent Literature 1 A hole closing cap is described in Patent Literature 1. This hole closing cap is not adequate in terms of (4) watertight sealing, nor has it been adequate in terms of either (1 ) fitability when inserted into a nut hole or (5) ease of detachment.
  • fasteners are described for connecting a separate attachment member to a panel-shaped member being attached to, each comprising a shaft that is to be inserted into an attachment hole in the member being attached to and a flange for pressing against the attachment member and having elastic latching pieces on the shaft. These devices are fasteners; they are not female thread hole closing plugs for closing threaded holes having female threads secured to the back surfaces thereof.
  • the plug-in force and removal force are selected by varying the shapes and dimensions and the like of the elastic latching pieces on the shaft, and, if detachment is easy, the force for preventing dropout will weaken, which is undesirable.
  • the fastener described in Patent Literature 3 is a fastener that is secured to a threaded hole, but the member being attached to is a member such as an electric power pole or the like which exhibits comparatively little vibration; therefore, this cannot be called adequate in terms of preventing dropout associated with vibration or the like after being fitted in place.
  • an object of the present invention is to provide a female thread hole closing plug, for closing a female threaded hole provided in an automobile body panel or the like, of a comparatively simple configuration.
  • a hole closing plug - a female thread hole closing plug for threaded holes in female threaded members secured to the back surface of a member being attached to such as a panel - is provided which comprises a flange of a size that will close a hole in the member being attached to, a column descending straight down from the flange and elastic latching pieces that extend from the tip end of the column toward the flange so as to separate more from the column as the flange is approached, such that, when the column and the elastic latching pieces are inserted into a hole in the member being attached to and into the threaded hole, the tips of the elastic latching pieces latch on the thread crests of the threaded hole and the flange closes the hole in the member being attached to.
  • a female thread hole closing plug for closing a threaded hole provided in an automobile body panel or the like can be provided in a comparatively simple configuration.
  • the latching pieces comprise a pair of lower elastic latching pieces provided near the tip of the column and a pair of upper elastic latching pieces provided at positions of intermediate height on the column.
  • the hole closing plug should preferably be formed integrally of a hard synthetic resin, and space should preferably be formed in the column, adjacent to the roots of the lower elastic latching pieces, wherein the tips of the lower elastic latching pieces can turn, at the tip end of the column.
  • the elastic latching pieces [may also] comprise a pair of lower elastic latching pieces provided near the tip of the column, a pair of intermediate elastic latching pieces provided at positions of intermediate height on the column and a pair of upper elastic latching pieces provided at positions nearer to the flange than the intermediate elastic latching pieces.
  • the hole closing plug should preferably be formed integrally of a soft synthetic resin.
  • a protruding ridge is formed for turning the flange about the axis of the column.
  • a hole for passing the tip of a tool, or a cord or the like should preferably be formed.
  • cross channels should preferably be formed for turning the flange about the axis of the column.
  • the cross channels should preferably be formed in a cross-channel formation part formed integrally on the upper surface of the flange, and a gap should preferably be formed between the cross- channel formation part and the flange, wherein the tip of a tool can be inserted.
  • Fig. 1 is a diagonal view of a conventional hole closing plug.
  • Fig. 2 is a section showing the manner in which the hole closing plug diagrammed in Fig. 1 is attached in the holes of a body panel and weld nut.
  • Fig. 3 is a diagonal view of a large conventional hole closing plug.
  • Fig. 4 is a section showing the manner in which the hole closing plug diagrammed in Fig. 3 is attached in the holes of a body panel and weld nut.
  • Fig. 5 is a diagonal view of a hole closing plug relating to a first embodiment of the present invention.
  • Fig. 6 is a plan of the hole closing plug diagrammed in Fig. 5.
  • Fig. 7 is a front elevation of the hole closing plug diagrammed in Fig. 5.
  • Fig. 8 is a right side elevation of the hole closing plug diagrammed in Fig. 5.
  • Fig. 9 is a section at the A-A line of the hole closing plug diagrammed in Fig. 6.
  • Fig. 10 is a section at the B-B line of the hole closing plug diagrammed in Fig. 6.
  • Figs. 11(A) is a section at the C-C line of the hole closing plug diagrammed in Fig. 7,
  • 11 (B) is a section at the D-D line of the hole closing plug diagrammed in Fig. 7 and 11(C) is a section at the E-E line of the hole closing plug diagrammed in Fig. 7.
  • Fig. 12 is a diagram of the manner in which the hole closing plug relating to the first embodiment of the present invention is attached to holes in a body panel and weld nut.
  • Fig. 13 is a diagram of the manner in which the hole closing plug diagrammed in Fig.
  • Fig. 14 is a diagram of the manner in which the hole closing plug relating to the first embodiment of the present invention is attached in holes in a body panel and a long weld nut of large diameter.
  • Fig. 15 is a diagram of the manner in which the hole closing plug relating to the first embodiment of the present invention is attached to holes in a thick body panel and a weld nut that is long and of large diameter.
  • Fig. 16 is a diagonal view of a hole closing plug relating to a second embodiment of the present invention.
  • Fig. 17 is a plan of the hole closing plug diagrammed in Fig. 16.
  • Fig. 18 is a front elevation of the hole closing plug diagrammed in Fig. 16.
  • Fig. 19 is a right side elevation of the hole closing plug diagrammed in Fig. 16.
  • Fig. 20 is a section at the F-F line of the hole closing plug diagrammed in Fig. 17.
  • Fig. 21 is a diagram of the manner in which the hole closing plug relating to the second embodiment of the present invention is attached to holes in a body panel and weld nut.
  • Fig. 22 is a diagram of the manner in which the hole closing plug relating to the second embodiment is attached to holes in a thick body panel and long weld nut.
  • Fig. 23 is a diagonal view of a hole closing plug relating to a third embodiment of the present invention.
  • Fig. 24 is a plan of the hole closing plug diagrammed in Fig. 23.
  • Fig. 25 is a front elevation of the hole closing plug diagrammed in Fig. 23.
  • Fig. 26 is a right side elevation of the hole closing plug diagrammed in Fig. 23.
  • Fig. 27 is a section at the G-G line of the hole closing plug diagrammed in Fig. 24.
  • Fig. 28 is a section at the H-H line of the hole closing plug diagrammed in Fig. 24.
  • Fig. 29 is a diagram of the manner in which the hole closing plug relating to the third embodiment of the present invention is attached to holes in a body panel and weld nut.
  • Fig. 30 is a diagram of the manner in which the hole closing plug relating to the third embodiment of the present invention is attached to holes in a thick body panel and long weld nut. Modes for Carrying out the Invention
  • a female thread hole closing plug 11 relating to a first embodiment for closing both a threaded hole secured to the back surface of a member being attached to such as an automobile body panel, and a hole in the member being attached to, is diagrammed.
  • the hole closing plug 11 is formed integrally of a thermoplastic synthetic resin.
  • thermoplastic synthetic resin should preferably be a comparatively hard synthetic resin material, wherewith the fitting when inserted into a hole will be sure, and a well-fitted sense will be realized.
  • the hole closing plug 11 comprises a flange 13 having a suction-cup disk shape, a column 14 descending straight down from the center of the lower surface of the flange 13 and two pairs of elastic latching pieces 15 and 17 that extend from the column 14 toward the flange 13 so as to separate away from the column 14 as the flange 13 is approached.
  • the configuration of the hole closing plug 11 is diagrammed, while in Figs. 12 to 15, the manner in which the hole closing plug 11 closes both a hole 29 in a body panel 26 that is the member being attached to, and a threaded hole 30 in a weld nut 27 that is a female threaded member, is diagrammed.
  • the flange 13 is formed overall in a disk shape, the lower surface whereof is formed in a thin-walled suction-cup shape capable of closing and tightly sealing a female threaded hole in a body panel or the like.
  • the upper surface of the flange 13 is formed overall in a substantially flat disk shape such that pushing in on it with a finger or the like is facilitated.
  • a protruding ridge 18 that protrudes upward, extending with a narrow width in the radial direction, is formed so that, when detaching the hole closing plug 11 from a hole, the hole closing plug 11 can be turned with the fingers or the like about the axis of the column 14.
  • a hole 19 is formed that passes through the protruding ridge 18 in the middle portion thereof.
  • a tool such as a screwdriver can be inserted in the hole 19, making it possible for the hole closing plug 11 to be pulled up by the tip of the tool. It is also possible to insert a cord or wire or the like into this hole 19 and use that for pulling the hole closing plug up when detaching it.
  • the upper surface of the flange 13, moreover, is formed large and flat, widening toward the outer edge thereof, so that when pushed in by one's fingertip, pain will not be felt in the fingertip.
  • the protruding ridge 18 is formed so that, as seen from above, the width thereof widens toward the outer edge of the flange 13, so that pain will not be felt in the fingertip due to the protrusion of the protruding ridge 18.
  • the protruding ridge 18 also enhances the overall strength of the flange 13, and the female threaded hole sealing function is thereby reinforced.
  • the cylindrical part 21 is formed in a rod shape that descends straight down from the center of the flange 13.
  • the upper portion of the column 14 adjacent to the flange 13 is formed as a cylindrical part 21 for closing a hole in a body panel or the like.
  • the diameter of the cylindrical part 21 should preferably be established by a cylindrical shape of a size that will enter into the hole in the body panel or the like so that the center axis of that hole and the center axis of the column 14 can be aligned.
  • the diameter of the cylindrical part 21 should preferably be formed to match the minimum inner diameter of possible threaded holes so that the hole closing plug 11 can be used to close threaded holes of various sizes.
  • the portion of the column 14 below the cylindrical part 21 is of such thickness as to maintain the strength of the column, but it is formed as a plate- shaped member by two sides of the cylinder being cut away to make it thinner, so that space is formed which can accommodate the elastic latching pieces 15 and 17 when they bend at the sides of the column 14.
  • a guide 22 is formed, to a sufficiently smaller diameter than the insertion hole, so as to easily guide the column into the hole.
  • the guide 22 is formed in a smooth shape such as a hemispherical shape of small diameter or the like, so as both to facilitate guidance into a hole and to prevent the tip from injuring a worker.
  • the lower elastic latching pieces 15 and 17 are formed in a pair at positions near the guide 22 at the lower end of the column 14, and the upper elastic latching pieces 17 are formed in a pair at positions at an intermediate height on the column 14, upwards from the lower elastic latching pieces 15. Because the lower elastic latching pieces 15 and the upper elastic latching pieces 17 are formed in two stages, even should the thickness of the material of the body panel or the like to which the female threads are secured be different, the threaded hole can be closed so as to accommodate such thickness difference.
  • the elastic latching pieces 15 and 17, as may be seen in Figs. 5, 7, and 10, when no force whatever is acting thereon, are in an attitude wherein they are oriented diagonally upward from the column 14.
  • the elastic latching pieces 15 and 17 exhibit the flexibility to topple over to the sides of the column 14 due to forces sustained from the inner wall surfaces of the hole when inserted into a hole such as a female threaded hole, and also exhibit the elasticity to return to the original attitude, as diagrammed in Fig. 5 and the like, when they have been made to topple over.
  • the tips of the elastic latching pieces 15 and 17 are formed in shapes that will latch onto the thread crests formed in the female threaded hole.
  • a space 25 is formed, making it possible for the lower elastic latching pieces 15 to turn downward, hinging at the root parts 23 thereof, so that they can turn through substantially 180 degrees (cf. Fig. 13).
  • the hole closing plug 11 is formed of a comparatively hard synthetic resin, when the degree of freedom of turning downward is low, and there is no space 25 such as at the root parts of the upper elastic latching pieces 17, there will be a danger of the elastic latching pieces being damaged when forcibly turned downward.
  • the thickness of the body panel 26 to which the hole closing plug 11 is being attached is thin and the height of the weld nut 27 is low, as diagrammed in Fig.
  • the force wherewith the hole closing plug 11 must be pushed in should preferably be established at 30 N or lower so as to impose no heavy ergonometric burden on a worker, and the elasticity of the lower elastic latching pieces 15 and upper elastic latching pieces 17 should preferably be established in accordance therewith.
  • the corners 31 at the tips thereof should preferably be rounded.
  • the outer surfaces 33 of the elastic latching pieces 15 and 17 as seen from a radial direction are formed so as to be curved in their cross sections.
  • Fig. 12 is diagrammed the manner in which the hole closing plug 11 , in the configuration described in the foregoing, closes both a panel hole 29 in a body panel 26 that is the member being attached to, having a weld nut 27 secured to the back surface thereof and a threaded hole 30 in a weld nut 27 that is a female threaded member.
  • the body panel 26 is a thin panel, and the length (height) of the weld nut 27 in the axial dimension is short.
  • the lower elastic latching pieces 15 will have passed through the weld nut 27.
  • the tips of the upper elastic latching pieces 17, however, are latched onto the ridge crests of the threaded hole 30, and the hole closing plug 11 is maintained in a condition wherein the panel hole 29 and threaded hole 30 are closed.
  • a female threaded hole provided in an automobile body panel or the like can be closed by the simple operation of pushing the hole closing plug 11 of comparatively simple configuration into the panel hole 29 and threaded hole 30.
  • the protruding ridge 18 of the flange 13 is used to turn the flange 13 about its axis in the forward direction of the threads of the body panel 26, the securing force of the hole closing plug 11 can be increased, and the watertight sealing of the hole closing enhanced.
  • the lower elastic latching pieces 15 have passed through the weld nut 27, wherefore, as the hole closing plug 11 is pulled up, the tips of the lower elastic latching pieces 15 will come up against the weld nut 27. Because the space 25 is formed at the root parts 23 of the lower elastic latching pieces 15, said lower elastic latching pieces 15, as diagrammed in Fig. 13, can turn through substantially 180 degrees, and the hole closing plug 11 can be detached from the body panel 26 without damaging those lower elastic latching pieces 15. As a consequence, the detached hole closing plug 11 can be reused as is.
  • the force of pulling-up on the hole closing plug 11 can be augmented using the hole 19 in the protruding ridge 18, either by inserting the tip of a tool in the hole 19, or by passing a cord or wire or the like through he hole 19 and pulling up therewith.
  • Fig. 14 diagrams an example wherein a weld nut 27A having a longer length in the axial dimension than the weld nut 27 has been secured to a body panel 26.
  • the hole closing plug 11 closes a panel hole 29A and a threaded hole 3OA so as to effect a definite tight seal therein because the lower elastic latching pieces 15 also, and not only the upper elastic latching pieces 17 thereof, will latch onto the thread crests of the threaded hole 3OA.
  • Fig. 15 diagrams an example wherein the weld nut 27A having a long length in the axial dimension is secured to a body panel 26A that is thicker than the body panel 26.
  • the hole closing plug 11 closes the panel hole 29A and the threaded hole 3OA so as to effect a definite tight seal therein because the lower elastic latching pieces 15 also, and not only the upper elastic latching pieces 17 thereof, latch onto the thread crests of the threaded hole 3OA.
  • detachment of the hole closing plug 11 is effected by turning the flange 13 about the axis of the column 14.
  • the hole closing plug 11 as described in the foregoing satisfies such conditions required in a hole closing plug as (1 ) fitability when inserted into a nut hole, (2) ease of attachment, (3) quality of preventing dropout associated with vibration and the like after being fitted in, (4) watertight sealing, (5) ease of detachment and (6) reusability after detachment.
  • Figs. 16 to 22 diagram a hole closing plug 11A relating to a second embodiment of the present invention.
  • Figs. 16 to 20 diagram the configuration of the hole closing plug 11 A
  • Figs. 21 and 22 diagram the manner in which the hole closing plug 11A closes holes in a body panel and weld nut.
  • the hole closing plug 11A relating to the second embodiment has many configuring elements that are similar to those of the hole closing plug 11 relating to the first embodiment.
  • the configuring elements of the hole closing plug 11 A that are the same as or similar to those of the hole closing plug 11 are indicated by corresponding numerals to which an A is appended. No detailed description is given of these configuring elements; therefore, please refer to the descriptions of the corresponding configuring elements in the hole closing plug 11.
  • the points of difference from the hole closing plug 11 in the hole closing plug 11 A are that the elastic latching pieces are formed in three stages, the protruding ridge formed in the flange is formed with the sides thereof parallel and of narrow width as seen from above, without any widening of the width thereof toward the outer edges of the flange and that no space is formed at the root parts of the lower elastic latching pieces for turning.
  • the hole closing plug 11 A is formed integrally of a thermoplastic synthetic resin.
  • the thermoplastic synthetic resin may be either a comparatively hard synthetic resin material or a comparatively soft synthetic resin.
  • the hole closing plug 11 A comprises a suction-cup disk-shaped flange 13A, a column 14A that descends straight down from the center of the lower surface of the flange 13A, and three pairs of elastic latching pieces 34, 35, and 37 that extend toward the flange 13A so as to separate away from the column 14A as the flange 13A is approached.
  • the flange 13A is formed overall in a disk shape, the lower surface whereof is formed in a thin-walled suction-cup shape capable of closing and tightly sealing a female threaded hole in a body panel, or the like.
  • the upper surface of the flange 13A is formed overall in a substantially flat disk shape such that pushing in with one's finger or the like is facilitated.
  • a protruding ridge 38 that protrudes upward, extending with a narrow width in the radial direction, is formed so that, when detaching the hole closing plug 11 A from a hole, the hole closing plug 11 A can be turned by finger or the like about the axis of the column 14A.
  • a hole 19A is formed that passes through the protruding ridge 38 in the middle portion thereof. A tool such as a screwdriver can be inserted in that hole, making it possible for the hole closing plug to be pulled up by the tip of the tool.
  • the protruding ridge 38 is formed with the sides thereof simply parallel and of narrow width, as seen from above.
  • the protruding ridge 38 also enhances the overall strength of the flange 13A, and the female threaded hole sealing function is thereby reinforced.
  • the upper part of the column 14A adjacent to the flange 13A is formed as a cylindrical part 21 A, which can enter a hole in a body panel or the like and align the center axis of that hole and the center axis of the column 14A.
  • three pairs of elastic latching pieces are formed, namely lower elastic latching pieces 34, intermediate elastic latching pieces 35 and upper elastic latching pieces 37.
  • the portion of the column 14A below the cylindrical part 21 A is of a thickness that will maintain the strength of the column and is formed as a plate shaped member by the two sides of the cylinder being cut away to make it thinner, so that the elastic latching pieces 34, 35 and 37 can bend at the sides of the column 14A.
  • a pointed guide 22A is formed to a sufficiently smaller diameter than the insertion hole and so as to easily guide the column into the hole.
  • the threaded hole can be closed, accommodating that thickness difference, the places of latching to the threaded hole are increased, and the securing of the hole closing plug 11 A is strengthened.
  • the force wherewith the hole closing plug 11 A is pushed in should be established at 30 N or lower so as to impose no heavy ergonometric burden on a worker, and the elasticity of the lower elastic latching pieces 34, the intermediate elastic latching pieces 35 and the upper elastic latching pieces 37 is established in accordance therewith. Accordingly, the hole closing plug 11A insertion force required does not increase all that much, and the insertion operation burden on a worker is small.
  • Fig. 21 is diagrammed the manner in which the hole closing plug 11 A, in the configuration described in the foregoing, closes both a threaded hole 30 and a panel hole 29 in a body panel 26 that is the member being attached to, having a weld nut 27 secured to the back surface thereof as a female threaded member.
  • the upper surface of the flange 13A is pressed by one's finger and is pushed in as is, whereupon the lower elastic latching pieces 34, intermediate elastic latching pieces 35, and upper elastic latching pieces 37 are toppled over to the inside in the radial direction.
  • the flange 13A is turned in the reverse direction of the threads of the weld nut 27.
  • the protruding ridge 38 is gripped with the fingers, and the flange 13A is turned about the axis of the column 14A, whereupon the tips of the upper elastic latching pieces 37 move upward along the thread crests of the threaded hole 30, and the hole closing plug 11 A is extracted upward from the body panel 26.
  • the intermediate elastic latching pieces 35 and lower elastic latching pieces 34 will have passed through the weld nut 27, wherefore, as the hole closing plug 11 A is being extracted upward, the tips of the lower elastic latching pieces 34 will come up against the weld nut 27, and pulling up will stop.
  • the tip of a tool is inserted into the hole 19A of the protruding ridge 38, or a cord or wire is passed therethrough, and the pulling up of the hole closing plug 11A is augmented.
  • the hole closing plug 11 A is formed of a comparatively soft synthetic resin, during the pulling up, the intermediate elastic latching pieces 35 and the lower elastic latching pieces 34 can turn through substantially 180 degrees, and the hole closing plug 11 A will be pulled out from the panel hole 29 and threaded hole 30 without damaging the intermediate elastic latching pieces 35 or lower elastic latching pieces 34. As a consequence, the hole closing plug 11A can be reused.
  • Fig. 22 diagrams an example wherein a long weld nut 27A of large diameter is secured to a thick body panel 26A.
  • the hole closing plug 11 A closes the panel hole 29A and the threaded hole 3OA so as to effect a definite tight seal therein because the intermediate elastic latching pieces 35 and lower elastic latching pieces 34 also, and not only the upper elastic latching pieces 37, latch onto the thread crests of the threaded hole 3OA.
  • detachment of the hole closing plug 11A is effected by turning the flange 13A.
  • the hole closing plug 11 A as described in the foregoing satisfies the necessary conditions of (1 ) fitability when inserted into a nut hole, (2) ease of attachment, (3) quality of preventing dropout associated with vibration and the like after being fitted in, (4) watertight sealing and (5) ease of detachment, and by forming the hole closing plug 11 A of a comparatively soft synthetic resin, the necessary condition of (6) reusability after detachment can be satisfied.
  • Figs. 23 to 30 diagram a hole closing plug 11 B relating to a third embodiment of the present invention.
  • Figs. 23 to 28 diagram the configuration of the hole closing plug 11 B
  • Figs. 29 and 30 diagram the manner in which the hole closing plug 11 B closes holes in a body panel and weld nut.
  • the hole closing plug 11 B relating to the third embodiment has many configuring elements that are similar to those of the hole closing plug 11 relating to the first embodiment.
  • the configuring elements of the hole closing plug 11 B that are the same as or similar to those of the hole closing plug 11 are indicated by corresponding numerals to which a B is appended. No detailed description is given of these configuring elements; therefore, please refer to the descriptions of the corresponding configuring elements in the hole closing plug 11.
  • the points of difference from the hole closing plug 11 in the hole closing plug 11 B are that the elastic latching pieces are formed in three stages, a cross-channel molding is provided on the upper surface of the flange, instead of the protruding ridge in a configuration that can be turned by a Phillips head screwdriver (also called a cross-head screwdriver), a gap is formed between the upper flange surface and the cross-channel molding so that engagement can be effected by finger or by the tips of a tool such as a pair of pliers, and that no space is formed at the root parts of the lower elastic latching pieces for turning.
  • a Phillips head screwdriver also called a cross-head screwdriver
  • the hole closing plug 11 B is formed integrally of a thermoplastic synthetic resin.
  • the thermoplastic synthetic resin may be either a comparatively hard synthetic resin material or a comparatively soft synthetic resin.
  • the hole closing plug 11 B comprises a suction-cup disk shaped flange 13B, a column 14B that descends straight down from the center of the lower surface of the flange 13B, and three pairs of elastic latching pieces 34B, 35B, and 37B that extend toward the flange 13B so as to separate away from the column 14B as the flange 13B is approached.
  • the flange 13B is formed overall in a disk shape, the lower surface whereof is formed in a thin-walled suction-cup shape capable of closing and tightly sealing a female threaded hole in a body panel or the like.
  • a plate-shaped cross-channel molding 39 is provided so that the flange 13B can be turned about the axis of the column 14B.
  • cross channels 41 are formed in the upper surface of the cross-channel molding 39.
  • a gap 42 is provided between the lower surface of the cross-channel molding 39 and the upper surface of the flange 13B. This gap 42 is formed so that the cross-channel molding 39 can be engaged by the fingers or, alternatively, is formed so that the cross- channel molding can be engaged by a tool such as a pair of pliers, and can be used when detaching the hole closing plug 11 B.
  • the plate-shaped cross-channel molding 39 is used as the part that is pressed against when pushing the hole closing plug 11 B in with a finger to close a hole in a body panel or a threaded hole in a weld nut.
  • the cross-channel molding 39 is connected to the flange 13B by a narrow connecting piece 43, so as to form the gap 42, which connecting piece 43 enhances the overall strength of the flange 13B, and the function of tightly sealing a female threaded hole is thereby enhanced.
  • lower elastic latching pieces 34B, intermediate elastic latching pieces 35B and upper elastic latching pieces 37B are formed, in pairs, in three stages.
  • the force wherewith the hole closing plug 11 B is pushed in should be established at 30 N or lower so as to impose no heavy ergonometric burden on a worker, and the elasticity of the lower elastic latching pieces 34B, the intermediate elastic latching pieces 35B and the upper elastic latching pieces 37B is established in accordance therewith. Accordingly, the hole closing plug 11 B insertion force required does not increase all that much, and the insertion operation burden on a worker is small.
  • Fig. 29 is diagrammed the manner in which the hole closing plug 11 B, in the configuration described in the foregoing, closes both a threaded hole 30 and a panel hole 29 in a body panel 26 having a weld nut 27 secured to the back surface thereof.
  • the hole closing plug 11 B because the body panel 26 is a thin panel and the length (height) in the radial dimension of the weld nut 27 is short, when the flange 13B is flush against the body panel 26, both the lower elastic latching pieces 34B and the intermediate elastic latching pieces 35B will have passed through the weld nut 27.
  • the tips of the upper elastic latching pieces 37B will have latched onto the thread crests of the threaded hole 30, whereupon the hole closing plug 11 B is maintained in a condition wherein the panel hole 29 and the threaded hole 30 are closed.
  • the tip of a Phillips screwdriver is placed into the cross channels 41 , and the flange 13B is turned in the reverse direction of the threads of the weld nut 27. Due to that turning, the tips of the upper elastic latching pieces 37B move upward along the thread crests of the threaded hole 30, and the hole closing plug 11 B is extracted upward from the body panel 26.
  • the intermediate elastic latching pieces 35B and lower elastic latching pieces 34B are passed through the weld nut 27, as the hole closing plug 11 B is extracted upward, the tips of the lower elastic latching pieces 34B come up against the weld nut 27 and the pulling up stops. Thereupon, either one's fingers or the tips of a pair of pliers are inserted into the gap 42, and the pulling up on the hole closing plug 11B is augmented. If the hole closing plug 11 B is formed of a comparatively soft synthetic resin, during that pulling up, the intermediate elastic latching pieces 35B and the lower elastic latching pieces 34B can turn through substantially 180 degrees, and the hole closing plug 11 B can be extracted from the panel hole 29 and threaded hole 30 without damaging the elastic latching pieces. As a consequence, the hole closing plug 11 B can be reused.
  • Fig. 30 diagrams a case wherein a long weld nut 27A of large diameter is secured to a thick body panel 26A.
  • the hole closing plug 11 B closes the panel hole 29A and the threaded hole 3OA so as to effect a definite tight seal therein because the intermediate elastic latching pieces 35B and lower elastic latching pieces 34B also, and not only the upper elastic latching pieces 37B, latch onto the thread crests of the threaded hole 3OA.
  • detachment of the hole closing plug 11 B is effected by turning the flange 13B.
  • the hole closing plug 11 B as described in the foregoing satisfies the necessary conditions of (1 ) fitability when inserted into a nut hole, (2) ease of attachment, (3) quality of preventing dropout associated with vibration and the like after being fitted in, (4) watertight sealing and (5) ease of detachment, and by forming the hole closing plug 11 B of a comparatively soft synthetic resin, the necessary condition of (6) reusability after detachment can be satisfied.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

Cette invention se rapporte à un bouchon de fermeture de trou de filetage femelle destiné à fermer à la fois un trou fileté situé dans un élément fileté femelle fixé sur la surface arrière d'un élément en cours de fixation et un trou situé dans l'élément en cours de fixation. Ce bouchon comprend une bride d'une taille permettant de fermer le trou situé dans l'élément en cours de fixation, une colonne descendant directement depuis la bride, et des pièces de verrouillage élastiques qui s'étendent depuis l'extrémité de pointe de la colonne vers la bride de manière à se séparer de la colonne en se rapprochant de la bride, de sorte que, lorsque la colonne et les pièces de verrouillage élastiques sont insérées dans le trou situé dans l'élément en cours de fixation et dans le trou fileté, les pointes des pièces de verrouillage élastiques se verrouillent sur les crêtes de filetage du trou fileté, et la bride ferme le trou situé dans l'élément en cours de fixation.
PCT/US2008/077776 2007-09-27 2008-09-26 Bouchon de fermeture de trou de filetage interne WO2009042824A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007251396A JP4437238B2 (ja) 2007-09-27 2007-09-27 雌ねじ用穴塞ぎプラグ
JP2007-251396 2007-09-27

Publications (1)

Publication Number Publication Date
WO2009042824A1 true WO2009042824A1 (fr) 2009-04-02

Family

ID=40511865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/077776 WO2009042824A1 (fr) 2007-09-27 2008-09-26 Bouchon de fermeture de trou de filetage interne

Country Status (2)

Country Link
JP (1) JP4437238B2 (fr)
WO (1) WO2009042824A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2596110C2 (ru) * 2011-11-16 2016-08-27 Форд Глобал Технолоджис, ЛЛК Формованный фиксатор в корпусе
EP3187738A1 (fr) * 2016-01-04 2017-07-05 Nexans Dispositif de retenue à trou fileté

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012172815A (ja) * 2011-02-24 2012-09-10 Daihatsu Motor Co Ltd 閉止栓
JP5847021B2 (ja) * 2012-06-04 2016-01-20 三菱電機ビルテクノサービス株式会社 基板取外し治具
JP6840433B2 (ja) * 2016-12-19 2021-03-10 株式会社青山製作所 熱膨張率の異なる板材の仮締め方法及び仮締めクリップ
JP2019011841A (ja) * 2017-06-30 2019-01-24 トヨタ自動車株式会社 雌ねじ用穴塞ぎプラグ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120918A (en) * 1977-05-16 1978-10-17 Colt Industries Operating Corp. Tamper proof idle adjusting screws
US5152650A (en) * 1990-06-04 1992-10-06 Kitagawa Industries Co., Ltd. Electrically conductive synthetic resin bolt
US6238127B1 (en) * 1998-12-17 2001-05-29 Western Sky Industries, Inc. Pivot apparatus including a fastener and bushing assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120918A (en) * 1977-05-16 1978-10-17 Colt Industries Operating Corp. Tamper proof idle adjusting screws
US5152650A (en) * 1990-06-04 1992-10-06 Kitagawa Industries Co., Ltd. Electrically conductive synthetic resin bolt
US6238127B1 (en) * 1998-12-17 2001-05-29 Western Sky Industries, Inc. Pivot apparatus including a fastener and bushing assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2596110C2 (ru) * 2011-11-16 2016-08-27 Форд Глобал Технолоджис, ЛЛК Формованный фиксатор в корпусе
EP3187738A1 (fr) * 2016-01-04 2017-07-05 Nexans Dispositif de retenue à trou fileté
US9899822B2 (en) 2016-01-04 2018-02-20 Nexans Threaded hole retainer

Also Published As

Publication number Publication date
JP2009079751A (ja) 2009-04-16
JP4437238B2 (ja) 2010-03-24

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