EP2612041A1 - Écrou à cage - Google Patents

Écrou à cage

Info

Publication number
EP2612041A1
EP2612041A1 EP11782539.8A EP11782539A EP2612041A1 EP 2612041 A1 EP2612041 A1 EP 2612041A1 EP 11782539 A EP11782539 A EP 11782539A EP 2612041 A1 EP2612041 A1 EP 2612041A1
Authority
EP
European Patent Office
Prior art keywords
cage
nut
opening
internal thread
abutment
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11782539.8A
Other languages
German (de)
English (en)
Inventor
Thorsten Schraer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruia Global Fasteners AG
Original Assignee
Ruia Global Fasteners AG
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 Ruia Global Fasteners AG filed Critical Ruia Global Fasteners AG
Publication of EP2612041A1 publication Critical patent/EP2612041A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/044—Nut cages
    • 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
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/04—Screwed connections specially modified in view of tensile load; Break-bolts for maintaining a tensile load
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/041—Releasable devices
    • F16B37/042—Releasable devices locking by rotation
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/32—Locking by means of a pawl or pawl-like tongue

Definitions

  • the present invention relates to a cage nut for mounting in an accessible only from one side, elongated, preferably rectangular opening with a nut body with a cylindrical internal thread carrier with an internal thread and an attached abutment part and a nut body enclosing the cage.
  • blind rivet nuts For so-called “blind applications”, ie applications in which the mounting point is accessible only from one side, such as large sheets, profile tubes, body parts or similar sheet metal parts, so-called “blind rivet nuts” have been used to such a part in a nut thread contribute.
  • These blind rivet nuts also referred to as BNM
  • BNM blind rivet nuts
  • BNM blind rivet nuts
  • blind rivet nuts are set with a special processing tool by creating a so-called “locking head” by crimping the blind rivet nuts, which fixes the nut. Since the corresponding blind rivet nuts per se and in particular the formed closing head are relatively soft, blind rivet nuts could in the past only be used to fasten light or subordinate components.
  • the "high-strength blind rivet nut” developed by Avdel was the first blind rivet nut which, due to its higher thread strength, also allowed structural connections with higher preload forces.
  • cage nuts Another known from the prior art way to provide sheet metal parts with internal threads are called cage nuts. For the installation of cage nuts but it was required in the prior art that either the back of the part is accessible, or that additional auxiliary holes for lateral insertion of the cage nut are required, as in the so-called "C-clips" of the prior Technology is needed.
  • Such a cage nut designed as a clip is known, for example, from EP 703 021 B1, which should form the closest prior art to the present invention.
  • Object of the present invention is therefore to provide a way to introduce an internal thread in a single-sided accessible opening of a sheet metal component without additional auxiliary openings (as in the C-clips) are necessary, and without the biasing force limitations of blind rivet nuts of the prior art ,
  • a cage nut which is suitable for mounting in only one side accessible from the elongated opening by this cage nut has an abutment part which is adapted to the shape of the opening, and a slightly smaller width and However, the length of the abutment part is significantly greater than the width of the opening, the cage is resilient and adapted to the shape of the opening in such a way that it can be clipped into the opening, and the Cage carries stop elements which allow only a rotation of the abutment member relative to the cage in the screwing of the internal thread from a mounting position parallel to the longitudinal direction of the cage in a holding position approximately perpendicular thereto.
  • the stop elements are designed so that they hold the nut body floating in the mounting position in the cage. In this way it is ensured that the nut body is also held during transport and during processing and when clipping in the mounting position.
  • the internal thread in the remote from the Einschraubseite area with a thread lock (clamp). This ensures that the nut body is rotated in any case in good time before the conclusion of the screwing from the mounting position to the holding position, as is enforced by the clamping sufficient torque transmission between the screw and the nut body, which causes the rotation of the nut body by 90 ° ,
  • the cage is designed so that it exerts a spring force on the nut body in the direction of the opening. In this way, the nut body is held even more secure in the mounting position, so that accidental premature twisting during transport or Einclipsens can be excluded.
  • a particularly preferred construction results when on the nut body an annular abutment surface for spring elements of the cage is arranged, and this abutment surface is provided in such a form with cams or a wave profile, that the cams or the raised portions of the wave profile with the spring elements of the cage Intervention come when the nut body leaves its floating mounting position in the cage. In this way it can be ensured that the nut body securely engages from the mounting position into the holding position.
  • a further particularly preferred construction results when the stop elements rest on an annular abutment, which is arranged in the nut body coaxial with the internal thread on the side facing the opening, and this abutment has recesses for receiving the stop elements, which are arranged so that the stop elements are received in the holding position therein. In this way, it is excluded that the nut body can be rotated during assembly beyond the holding position out again into a new mounting position.
  • transition from the abutment into the recesses in the direction of twisting is designed as a bevel.
  • transition from the recesses into the abutment is designed as a stop surface running parallel to the axis of rotation of the internal thread. In this way, a "over-turning" of the nut body in a new mounting position can be safely excluded.
  • Another particularly easy to manufacture embodiment of the present invention results when the blind side of the cage a plastic part is placed with a central opening on the cylindrical internal thread carrier, which has resilient arms extending beyond a blind side surface of the cage on the level of the Extend the abutment parts and hold this floating in the mounting position.
  • the plastic part is provided with a collar which extends in the direction of the blind side and concentrically surrounds the cylindrical inner thread carrier.
  • blind-side surface of the cage and the plastic part have similar dimensions as the abutment part and the arms are each arranged in the screwing of the internal thread diagonally in the vicinity of the corners of the plastic part, while the stop members are respectively arranged opposite the arms ,
  • FIG. 1 shows a cage nut according to the invention introduced into an opening in a sheet and already in the holding position
  • Figure 2 is a sectional view of the cage nut according to the invention of Figure 1 cut parallel in the mounting position to the axis of rotation of the internal thread;
  • FIG 3 shows the cage nut according to the invention of Figure 1 in the assembled position.
  • Figure 4 shows various modified embodiments of the cage nut according to the invention
  • Figure 5 shows a three-dimensional representation of an embodiment of a nut body according to the invention
  • Figure 6 shows a section through the axis of rotation of the internal thread and parallel to the long edges of the nut body of Figure 5;
  • Figure 7 shows the embodiment of Figure 5 from above
  • Figure 8 shows a sectional view of the embodiment of Figure 5 cut through the axis of rotation of the internal thread and parallel to the short edges of the nut body;
  • Figure 9 is a three-dimensional view of the cage associated with the nut body shown in Figure 5;
  • Figure 10 shows a sectional view through the cage of Figure 9 seen from the long side;
  • Figure 11 shows the cage of Figure 9 seen from the short side
  • FIG. 12 shows the cage of FIG. 9 from above
  • FIG. 13 shows the cage nut assembled from the parts according to FIG. 9 and FIG. 5 as a three-dimensional representation obliquely from above into the assembly position;
  • FIG. 14 shows the assembled cage nut of FIG. 13 seen from the long side
  • FIG. 15 shows the assembled cage nut of FIG. 13 from above
  • FIG. 16 shows the assembled cage nut of FIG. 13 seen from the short side
  • Figure 17 shows a further particularly preferred embodiment of the cage nut according to the invention in the assembled position in a three-dimensional view
  • Figure 18 is a exploded perspective view of the cage nut of Figure 17 from below;
  • Figure 19 is a perspective exploded view of the cage nut of Figure 17 obliquely from above;
  • FIG. 20 shows the cage nut of FIG. 17 in the assembly position from below
  • FIG. 21 shows the cage nut of FIG. 17 in the assembled position from the side, partly along the axis of rotation of the internal thread
  • FIG. 22 shows the cage nut of FIG. 17 in the assembly position from above
  • FIG. 23 shows the cage nut of FIG. 17 mounted in a suitable opening from the side
  • FIG. 24 shows the cage nut of FIG. 17 mounted in a suitable opening, seen in the assembly position from the blind side.
  • FIG. 1 shows a cage nut 10 according to the invention, which is already used here in an opening 12 in a plate 14, and is already in the holding position.
  • the corresponding screw, which is screwed into the nut, is not shown for clarity.
  • the illustrated cage nut 10 comprises a nut body 16, which is enclosed by a cage 18.
  • the nut body 16 includes a cylindrical internal thread carrier 20 having an internal thread 22 and an abutment portion 24, which has the shape of an obliquely beveled at the corners elongated rectangle, and developed from the sheet-side end of the internal thread carrier 20.
  • the cage 18 consists of a thin sheet of spring steel and has an elongated rectangular base plate 26, wherein the shape of the base plate 26 corresponds approximately to the shape of the abutment portion 24 and wherein the dimensions of the opening 12 are selected to be slightly larger than the dimensions of Abutment parts 24 and the base plate 26th
  • two bent resilient arms 28 close.
  • the arms 28 are first obliquely outward away from the plate 14 and then slightly inclined inwardly away from the plate 14 away. At the height of the end facing away from the sheet 14 of the internal thread carrier 20, the arms 28 engage over the internal thread carrier 20 partially.
  • the internal thread carrier 20 has an annular abutment surface 30 which are respectively provided at the locations where it comes closest to one side of the abutment part 24, with cams 32 which are bulged upward.
  • the arms 28 of the cage 18 are provided with corresponding bulges 34, so that they can lock with the cam 32.
  • the cams 32 are therefore arranged at a distance of 90 °. Both in the assembly and in the holding position, in each case two opposing cams 32 are covered by the arms 28.
  • FIG 2 shows the cage nut according to the invention 10 of Figure 1 in the assembled position and along the axis of rotation of the internal thread 22 cut seen from the sheet side.
  • the opening 36 for the passage of a mounting screw is clearly visible, which is arranged in the base plate 26 of the cage 18.
  • stop members 38 are formed at the edge of the opening, which are bent starting from the base plate 26 of the cage 18 of the sheet side away vertically upwards.
  • this guideway is offset from the plane of the sheet 14 away.
  • the guideway 40 is provided with two recesses 44 which receive the stop members 38 when the cage nut 10 is in the holding position. Because of the sectional view, only one recess 44 is shown here. The further recess, not shown, is formed point-symmetrically to the axis of rotation of the internal thread 22.
  • the transition from the guideway 40 into the recess 44 is formed as a slope 46, so that a sliding transition from the mounting in the holding position of the nut 10 is possible.
  • the transition from the recess 44 back into the guideway 40 is designed as a parallel to the axis of rotation of the internal thread 22 extending stop surface 48. In this way, a "over-turning" of the nut body 16 is reliably prevented from the holding position back to the mounting position.
  • the stop surface 48 may be formed so that it interrupts the entire guideway, and extends to the sheet-side surface 42 of the abutment portion 24. This can prevent that the cage nut 10 according to the invention is rotated against the screwing from the mounting position to the holding position during the transport or assembly before it has ever been mounted.
  • FIG. 3 shows the cage nut 10 according to the invention again from the viewing direction of FIG. 1, but in the assembled position.
  • the comparison of Figures 1 and 3 therefore allows the description of the assembly and Verschraubungsvorgangs in detail.
  • the cage nut 10 is delivered in the assembled state shown in FIG. In this state, the longitudinal sides of abutment part 24 and base plate 26 of the cage 18 are arranged parallel to each other. As a result, the nut body is held by the stop members 38 floating over the base plate 26.
  • the illustrated in Figure 1 small cam 32 on the annular abutment surface 30 are located under the corresponding recesses 34 of the spring arms 28. As a result, the nut body 16 is held in this position reasonably rotationally fixed, so that unintentional rotation of the nut body 16 against the cage 18 during transport or the mounting is largely avoided.
  • the cage nut 10 according to the invention is clipped into a suitable opening 12, for example in a metal sheet 14.
  • a suitable opening 12 for example in a metal sheet 14.
  • the internal thread 22 is provided in the remote from the Einschraubseite area with a thread lock (clamping).
  • the enlarged retaining cams 32 ' which are clearly visible in FIG. 3, are additionally provided. These are designed so that they also ensure a sufficient spring preload by the spring arms 28 of the cage 18 on the nut body 16 when it has been moved to sink the stop members 38 into the recesses 44 on the plate 14.
  • this enlarged cam 32 ' is also ensured that the nut body 16 can not be rotated beyond the holding position out again in a new mounting position, as has been ensured by the tracking of the spring bias that the stop elements 38 abut against the stop surface 48 safe.
  • Figure 4 shows further embodiments for embodiments of the invention the spring arms 28 of the cage 18. These can either, as already shown in Figures 1-3, attack at the end remote from the sheet 14 end of the internal thread carrier 20, wherein the respective engagement surfaces 30b, 30c either smooth or may be formed with an undercut 50 for securing the spring arms 28.
  • An alternative construction shows the support of the spring arms 28 on the holding part 24 of the nut body 16. Again, an undercut 52 may be provided for better support of the spring arms 28.
  • Figure 5 shows a three-dimensional spatial representation of the corresponding nut body 16, in which case the crosswise arrangement of the cams 32 and 32 'and their different size is very clearly visible.
  • FIG. 6 shows a sectional view of the nut body of FIG. 5 cut parallel to the long side of the nut body 16 through the axis of rotation of the internal thread 22.
  • FIG. 7 shows the nut body 16 of FIG. 5 from above. Again, the crosswise arrangement and the different size of the cams 32 and 32 'again very clearly visible.
  • FIG. 8 shows a sectional view of the nut body 16 of FIG. 5 cut parallel to the short side of the nut body 16 through the axis of rotation of the internal thread 22.
  • Figure 9 shows a matching to the embodiment of the nut body according to Figure 5 cage 18 in three-dimensional representation. Particularly well here is the formation of the spring arms 28 with the recesses 34 for locking the retaining cams 32, 32 'and the formation of the stop elements 38 to recognize.
  • Figure 10 shows the cage of Figure 9 seen from the long side.
  • FIG 11 shows the cage 18 of Figure 5 seen from the short side.
  • FIG. 12 shows the cage 18 of FIG. 9 from above.
  • Figure 13 shows the assembly of the nut body 16 with the cage 18 to the cage nut 10 of the invention in a three-dimensional view obliquely from above and in the assembled position, ie in the form of how the cage nut 10 according to the invention is supplied and inserted into a corresponding recess in a sheet.
  • FIG. 14 shows the cage nut 10 according to the invention in the assembled state seen from the long side, it can be seen particularly clearly how the nut body 16 "floats" between the stop elements 38 and the smaller cams 32 latched in the recesses 34 of the spring arms 28 is held.
  • the nut body 16 floats between the stop elements 38 and the smaller cams 32 latched in the recesses 34 of the spring arms 28 is held.
  • the much larger version of the enlarged cam 32 ' is also very nice to recognize the much larger version of the enlarged cam 32 '.
  • Figure 15 shows the cage nut 10 according to the invention in the assembled state and mounting position seen from above. Again, education and arrangement of the cams 32, 32 'can be seen well again.
  • Figure 16 shows the assembled cage nut 10 according to the invention seen from the short side also in the assembled position.
  • a cage nut is created for the first time especially for one-sided access.
  • the cage nut according to the invention can be inserted directly into a rectangular hole in a metal sheet or a tube profile. No auxiliary holes are required for lateral insertion of the cage, as is necessary with the so-called C-clips of the prior art.
  • the cage 18 itself is first clipped directly into the hole and automatically fixed in the cage via an undercut.
  • the nut body 16 rests on two stopper members 38, which develop from the base plate 26 of the cage 18.
  • the two spring arms 28 have two tasks: on the one hand the generation of a spring action / bias to allow the Einclipsen of the cage 18 in the rectangular hole 12 in the plate 14, on the other hand, the hold down / depression of the nut body 16 with a spring force, so that this rests on the stop elements 38, even if a corresponding counterforce is generated by the insertion / depression of a screw for screwing.
  • the internal thread 22 of the nut body 16 is advantageously provided with a thread lock (clamping) in the area facing away from the sheet, to which the screw can be screwed without much resistance from the bottom.
  • a thread lock clamping
  • the nut body 16 rotates against the cage 18 and the sheet metal 14. Since the nut body 16 sits only on the two stop elements 38 of the cage 18 designed as sheet metal tabs, the nut body can easily be turned. After being rotated by 90 °, the two stop elements 38 engage in the rectangular recess 44 below the internal thread 22. As soon as the stop elements 38 engage in the recess 44, the spring force of the spring arms 28 presses the nut body 16 down to the plate 14.
  • the cage nut according to the invention operates as a normal screw-nut connection, but with the advantage of a simple Clip-in assembly even with only one-sided access.
  • FIGS. 17 to 24 show a particularly economical embodiment of the cage nut 110 according to the invention.
  • FIG 17 shows this cage nut 110 obliquely from above, that is seen from the blind side.
  • This embodiment of the cage nut has a nut body 116 which is enclosed by a cage 118.
  • the nut body 116 includes a cylindrical internal thread carrier 120 having an internal thread 122 and an abutment portion 124, which has the shape of an elongated rectangle rounded at the corners, and which develops from the workpiece side end of the internal thread carrier 120.
  • the cage 118 consists of a thin sheet of spring steel and has an elongated rectangular base plate 126, wherein the shape of the base plate 126 corresponds approximately to the shape of the abutment portion 124.
  • the two narrow sides of the rectangular base plate 126 are followed by curved spring elements 127, which extend in the direction away from the blind side, have a slight recess 129 and an end stop 131 with which the cage 118 is clipped into a suitable opening of corresponding size in a workpiece can be.
  • a stop element 138 is attached to the longitudinal sides of the base plate 126, which also extends away from the blind side.
  • the two stop elements 138 are diagonally opposite each other and mounted opposite to the diagonal, in which the nut body 116 would move when screwing a screw into the internal thread 122.
  • the embodiment is shown for a right-hand thread as internal thread 122, in a left-hand thread, the embodiment would be a mirror image.
  • the stop elements 138 serve both to prevent the nut body 116 from being rotated in the wrong direction, for example when a screw is to be unscrewed again, and as stop elements in the screwing-in direction, so that the nut body 116 when screwing in a screw is approximately 90 ° relative to the assembly position abuts against these stop elements 138 and so stops.
  • a likewise rectangular plastic part 160 which has approximately the dimensions of the abutment portion 124 and the base plate 126 of the cage 118, wherein the shorter in the longitudinal direction may be performed.
  • This plastic part 160 is placed directly on the blind-side surface of the base plate 126.
  • it has a passage opening through which the internal thread carrier 120 passes.
  • a collar 164 arranged coaxially with the internal thread carrier 120 may extend on the plastic part 160 in the direction of the blind side, as shown here.
  • the attachment of the plastic part 160 to the internal thread carrier 120 can be done either via a press fit (mediated by the elasticity of the plastic of the plastic part 160) of the internal thread at the passage opening 162 or additionally on the collar 164.
  • the plastic part 160 is provided with arms 168, which are formed elastically and the base plate 126 completely and the abutment part 124 partially embrace. In order to improve the elastic deformability of the arms 168, they may be partially separated from the plastic part 160 by means of a wedge-shaped cut 170. Further, in the base plate 126, a recess 172 may be provided for each of the arms 168.
  • the spring elements 127 on each of the longitudinal sides of the base plate 126 may, as shown here, be formed only near the corners of the base plate 126 and separated by a recess 133, however, depending on the size of the corresponding cage nut and the desired spring force for clipping Also, a continuous sheet can be used, which extends over the entire narrow side without recess.
  • Figure 18 shows the exploded view obliquely from below, that is seen from the Einschraubseite ago. From bottom to top of the nut body 116 with the internal thread 122 and the internal thread carrier 120 can be clearly seen. From the page shown here, a suitable screw can be screwed into the internal thread 122 after installation. Very nice here is recognizable, as in the embodiment shown here, not only the edges of the base plate 124 are executed rounded, but, as here to achieve a better space utilization in the cage 118, the narrow sides of the rectangular abutment portion 124 are circular arc rounded.
  • the cage 118 is shown next, in this figure, the recesses 172 for the arms 168 and the passage opening 174 through the base plate 126 of the cage 118 are outstandingly recognizable. Through the circular opening 174 extends in the mounted state of the internal thread carrier 120 with a corresponding game.
  • the plastic part 160 is shown, in which case the opening 162 for receiving the internal thread carrier 120 and the arms 168 with the wedge-shaped recesses 170 arranged next to it are particularly clearly visible.
  • Figure 19 represents the same exploded view, but this time obliquely from above, that is seen obliquely from the blind side.
  • bottom to top nut body 116, cage 118 and plastic part 160 are shown.
  • Particularly well here is also the opening 174 in the base plate 126 of the cage 118 to the passage of the internal thread carrier 120 and the recess 172 for the arms 168 of the plastic part 160 to recognize.
  • the plastic part 160 only one of the arms 168 with the wedge-shaped recess 170 and the collar 164 can be seen in this case.
  • the circular arc-shaped rounding of the narrow sides of the abutment portion 124 of the nut body 116 is clearly visible.
  • Figure 20 shows the preferred embodiment of the cage nut 110 seen from the Einschraubseite. Here also the circular arc-shaped rounding of the narrow sides of the abutment portion 124 of the nut body 116 is clearly visible.
  • Figure 21 shows the further embodiment of the cage nut 110 according to the invention from the side and partially cut along the axis of rotation of the internal thread 122.
  • the base plate 126 of the cage 118 is received between the plastic part 160 and the abutment part 124 of the nut body 116, while the collar 164 of the plastic part 160 forms a press fit with the internal thread carrier 120.
  • FIG. 22 shows the further embodiment of the cage nut 110 according to the invention from the blind side.
  • the arms 168 and their recesses 170 are particularly well recognized.
  • FIG. 23 shows how the further embodiment of the cage nut 110 is inserted into a corresponding opening 112 in a workpiece 114.
  • the stop ends 131 of the clips 127 come to rest on the workpiece, while the undercut 129 of the clips 127 hold the cage nut 110 in a defined position.
  • the abutment part 124 is held in a floating manner above the plane of the workpiece 114 by the arms 168 and the stops 138.
  • FIG. 24 shows the illustration of FIG. 23 from the blind side.
  • the opening 112 to be provided for mounting the cage nut 110 can be seen particularly well in the workpiece 114.
  • the nut body 116 By screwing the nut body 116 is on the one hand drawn to the plane of the workpiece 114, and on the other hand exposed to torque. As a result, the arms 168 deviate, the nut body is rotated by 90 ° in the screwing-in direction until it comes into contact with its longitudinal side against the narrow edge of the stop elements 138. Thus, the nut body 116 is then in the holding position in which it rests with a large part of its base on the workpiece 114 outside the opening 112, and thus forms a reliable abutment for the screw, in which an excessively high load on the workpiece 114 is avoided, since a sufficient area for deriving the forces is available.
  • the cage nut 10, 110 according to the invention can be clipped directly into a punched, rectangular hole. For this assembly, no tools or tools are needed and the assembly is also easily possible with just one hand.
  • the cage nut according to the invention can not fall like a "C-clip" nut when inserted through the auxiliary hole on the blind side and thus "disappear".
  • the cage nut 10, 110 according to the invention can be used for various sheet thicknesses by appropriate design of the cage 18, 118. Furthermore, there is a smooth bearing surface for the component to be mounted, and not a curved surface as in the "C-clip" nut. This results in a lower setting of the connection.
  • the locking of the cage nut 10, 110 according to the invention is advantageously carried out automatically by the insertion and screwing of the screw.
  • the support surface of the abutment part 24, 124 are made so large, so that sheets of light metal (for example, aluminum) bear the surface pressure in over-elastic screw assembly.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Transmission Devices (AREA)
  • Types And Forms Of Lifts (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Dowels (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

L'invention porte sur un écrou à cage (10) destiné à être monté dans une ouverture allongée, de préférence rectangulaire (12) et accessible par un seul côté, qui présente un corps d'écrou (16) comportant un support de filetage intérieur cylindrique (20) muni d'un filetage intérieur (22) et une partie de butée (24) disposée à la suite du filetage, et une cage (18) entourant le corps d'écrou (16), la partie de butée (24) étant adaptée à la forme de l'ouverture (12) et présentant une largeur légèrement plus petite et une longueur légèrement plus petite que l'ouverture (12), la longueur de la partie de butée (24) étant cependant nettement plus grande que la largeur de l'ouverture (12); la cage (18) est de constitution élastique et adaptée à la forme de l'ouverture (12) de sorte qu'elle puisse être encliquetée dans l'ouverture (12); et la cage (18) porte des éléments de butée (38) qui permettent de faire tourner la partie de butée (24) par rapport à la cage (18) uniquement dans le sens du vissage du filetage intérieur (22) pour passer d'une position de montage parallèle à la direction longitudinale de la cage (18) à une position de retenue à peu près perpendiculaire à cette direction.
EP11782539.8A 2010-08-31 2011-08-31 Écrou à cage Withdrawn EP2612041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010012019U DE202010012019U1 (de) 2010-08-31 2010-08-31 Käfigmutter
PCT/DE2011/050028 WO2012048686A1 (fr) 2010-08-31 2011-08-31 Écrou à cage

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EP2612041A1 true EP2612041A1 (fr) 2013-07-10

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EP11782539.8A Withdrawn EP2612041A1 (fr) 2010-08-31 2011-08-31 Écrou à cage

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US (2) US9121431B2 (fr)
EP (1) EP2612041A1 (fr)
JP (1) JP2013536384A (fr)
KR (1) KR20130057456A (fr)
CN (1) CN103080570A (fr)
AU (1) AU2011316249A1 (fr)
BR (1) BR112013002470A2 (fr)
CA (2) CA2806627A1 (fr)
DE (2) DE202010012019U1 (fr)
MX (1) MX2013002346A (fr)
WO (1) WO2012048686A1 (fr)

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Also Published As

Publication number Publication date
US20150345536A1 (en) 2015-12-03
CA2883732A1 (fr) 2012-04-19
BR112013002470A2 (pt) 2016-05-24
US9121431B2 (en) 2015-09-01
CA2806627A1 (fr) 2012-04-19
JP2013536384A (ja) 2013-09-19
WO2012048686A1 (fr) 2012-04-19
MX2013002346A (es) 2013-05-20
AU2011316249A1 (en) 2013-02-14
DE112011104226A5 (de) 2013-09-26
US20130156526A1 (en) 2013-06-20
DE202010012019U1 (de) 2010-12-02
KR20130057456A (ko) 2013-05-31
CN103080570A (zh) 2013-05-01

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