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
  • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
  • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
• • 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
  • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
  • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
  • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt

Definitions

• the invention relates to an expansion anchor with the features of the preamble of claim 1.
• Expansion dowels are known per se. They have expansion legs which aretuftedd Wegbar by introducing a pin-shaped expansion element, which is referred to as spreading. As a spreading screw and nail screws are common, it can also be a nail for spreading the expansion anchor between the expansion legs are introduced.
• a spreading screw and nail screws are common, it can also be a nail for spreading the expansion anchor between the expansion legs are introduced.
• two expansion limbs may be formed through a slot across the expansion anchor in a longitudinal median plane of the expansion anchor. Also, more than two expansion limbs, for example three or four, are possible.
• the object of the invention is to stabilize the expansion legs of a expansion anchor.
• expansion limbs of the expansion anchor according to the invention are in the circumferential direction by deformable connectors, which in their course their direction with respect to the
• Blocking expansion anchor which serves for introducing the pin-shaped expansion element and is also referred to as a screw.
• the connectors may extend in tangential or chordal planes of the expansion anchor.
• the connectors may be angled, i. kinked or have an arcuate, for example C- or U-shaped course.
• the connector can stretch or shorten, so that a
• the distance between the expansion legs from each other can be increased to spread the expansion anchor, it can also be reduced for insertion into a wellbore.
• the inventive compound of the expansion legs together in the peripheral region of the expansion anchor the expansion legs are stabilized, a torsional stiffness of the expansion anchor in the expansion leg is increased.
• a bending stiffness of the expansion leg is increased.
• the risk is reduced that the expansion legs bend when screwing in an expansion screw in opposite tangential or secant directions to the side and the screw exits between the expansion legs.
• the connectors according to the invention guide the pin-shaped expansion element between the expansion limbs and avoid a lateral exit of the pin-shaped expansion element. Because of herself in her
• the connectors change their direction in two imaginary planes with respect to the expansion anchor, so they have an angled or curved in two different directions course.
• the direction of the connectors can also change in more than two imaginary planes.
• the planes in which the connectors change direction are, for example, a tangential or secant plane and a radial plane of the expansion anchor.
• the expansion anchor according to the invention is made of plastic, for example by injection molding.
• the connectors are integral with the expansion dowel, the expansion dowel can be produced with the connectors in one operation.
• FIG. 1 shows an expansion dowel according to the invention in a perspective view
• FIG. 2 shows a longitudinal section of the expansion anchor according to marking II in FIG. 1;
• FIG. 3 shows a cross section of the expansion anchor along the line III-III in Figure 1.
• the expansion dowel 1 according to the invention shown in FIG. 1 has a tubular shaft 2 with a funnel-shaped collar 3 at an end of the expansion dowel 1, referred to as the rear. At an end of the shaft 2 remote from the collar 3, the expansion anchor 1 continues with two expansion legs 4.
• the expansion legs 4 extend in the longitudinal direction of the expansion anchor 1 parallel to each other.
• the two expansion legs 4 are separated by a the expansion dowel 1 in the region of the expansion leg 4 transversely passing slot in a longitudinal center plane of the expansion anchor 1, the expansion leg 4 take approximately circular segments in the cross section of the expansion anchor 1 ( Figure 3).
• the expansion limbs 4 At their mutually facing surfaces, the expansion limbs 4 have longitudinal grooves which form a screw channel 5 (FIG. 3).
• the two expansion legs 4 are connected to each other at their two longitudinal sides by connector 7 (Figure 2).
• the connectors 7 are located in a peripheral region of the expansion anchor 1.
• the connectors 7 are angled once in a tangent or secant surface of the expansion anchor 1, i. they change direction.
• the bend can also be called kink or
• Buckling of the connector 7 are called. By their bending, the connectors 7 can be stretched or shortened by a change in shape, whereby the bending becomes smaller or larger. As a result, the expansion leg 4 can almost unhindered from the connectors 7 to spread apart and approach each other for insertion of the expansion anchor 1 in a not shown well.
• the connectors 7 In addition to the angling in the tangential or secant planes of the expansion anchor 1, the connectors 7 also change their direction through a U-shaped course in radial planes of the expansion anchor 1, as can be seen in FIG.
• the connectors 7 thus change their direction in two planes to the expansion anchor 1, on the one hand by the visible in Figure 2 bend the connector 7 in the secant or tangent planes of the Expansion dowel 1 and the other by their in cross-section in Figure 3 to be seen U-shape in the radial planes of the expansion anchor 1.
• the stretchability or shortenability of the connector 7 by deformation is thereby increased, their resistance to spreading of the expansion leg 4 is reduced.
• the connectors 7 increase a torsional stiffness of the expansion anchor 1 in the region of the expansion legs 4 and a bending stiffness of the expansion leg 4 against a bend parallel to their facing surfaces.
• the connector 7 the screw 6 in the screw 5. The connector 7 prevent the screw 6 when screwing due to their rotation, the expansion legs 4 in opposite
• the illustrated embodiment of the expansion anchor 1 is made by injection molding
• Plastic including the expansion leg 4 connecting connector 7 made in one piece.
• the connectors 7 are stretchable by a change of shape, i. a reduction of their bending seen in Figure 2 and by an expansion of their U-shape seen in Figure 3 in the direction of a V-shape with unchanged arcuate yoke.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Dowels (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Surgical Instruments (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38440168

Family Applications (1)

Country Status (11)

Families Citing this family (11)

Family Cites Families (17)

• 2006
  • 2006-06-27 DE DE102006029414A patent/DE102006029414A1/de not_active Withdrawn
• 2007
  • 2007-06-19 CN CNA2007800242954A patent/CN101479486A/zh active Pending
  • 2007-06-19 JP JP2009516943A patent/JP2009541684A/ja active Pending
  • 2007-06-19 WO PCT/EP2007/005374 patent/WO2008000372A1/de active Application Filing
  • 2007-06-19 RU RU2009102534/11A patent/RU2009102534A/ru not_active Application Discontinuation
  • 2007-06-19 BR BRPI0713465-7A patent/BRPI0713465A2/pt not_active IP Right Cessation
  • 2007-06-19 KR KR1020087031385A patent/KR20090028722A/ko not_active Application Discontinuation
  • 2007-06-19 CA CA002651918A patent/CA2651918A1/en not_active Abandoned
  • 2007-06-19 EP EP07764710A patent/EP2032862A1/de not_active Withdrawn
  • 2007-06-19 US US12/299,343 patent/US20090092459A1/en not_active Abandoned
  • 2007-06-20 TW TW096121995A patent/TW200809096A/zh unknown

Non-Patent Citations (1)

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