Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F7/00—Magnets
  • H01F7/06—Electromagnets; Actuators including electromagnets
  • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
  • H01F7/081—Magnetic constructions

Definitions

• Magnet armature mounting especially for proportional magnets and switching magnets in the hydraulic or pneumatic field
• the invention relates to a bearing arrangement of the type specified in the preamble of claim 1.
• the sliding film preferably made of Teflon, lies on the inside diameter over the entire circumference.
• Teflon Teflon
• the film must be cut very precisely in width so that there is no gap or overlap.
• a precise puncture on the pole bottom and a stroke limitation are necessary so that the slide film cannot open up.
• the length of the film must be made to the exact dimensions so that it does not move out of the recess.
• the invention is therefore based on the object of creating a generic magnetic bearing arrangement which, while avoiding the disadvantages mentioned, ensures a permanent, smooth-running switching / sliding function of the armature and can also be produced precisely and automatically in a simple manner.
• the stated object is achieved by the features specified in the characterizing part of patent claim 1.
• the invention is accordingly based on the knowledge that a reliable and permanent mounting of the armature can be ensured in that the ring causing the magnetic separation, for example made of brass, can take over the bearing function by protruding inwards over the inside diameter of the pressure tube. With a corresponding length dimensioning of the ring relative to the length of the armature, only the ring which brings about the magnetic separation can be sufficient for the bearing and for this purpose have a longer or more short ring bearing surfaces.
• these further rings advantageously consisting of the same material as the separating ring, i.e. preferably consist of brass.
• the separation of the magnetic flux can be achieved by welding a non-ferromagnetic ring onto a corresponding pre-turned part, with a bearing ring being welded onto the other end in addition to the magnetic separating ring. Then the pre-turned part can be turned into a pressure pipe be, the two bearing rings protruding accordingly over the inner diameter.
• the two ring bearings can also be produced by interposing non-magnetic rings in the pressure tube sections, these rings then being welded or soldered to the pole core or the pressure tube in order to achieve the pressure resistance.
• Fig. 1 shows an axial section of a magnet armature bearing representing the prior art
• FIG. 2 shows an axial section of a magnet armature bearing designed according to the invention
• FIG. 3 shows a longitudinal section of the pressure tube designed according to the invention with a pole core without a magnet armature
• FIG. 4 shows an axial section of a pre-turned part, from which the structure of the pressure tube with pole core shown in FIG. 3 can be produced.
• the reference numeral 10 designates the pressure tube, which is connected via a magnetic separator to the pole core 12, which has a through hole 14 for the passage of an actuating rod and a screw thread connection 16.
• the anchor 18 is slidably mounted within the pressure tube 10.
• the magnetic separator is designed as a ring 20 made of brass or the like, the inner wall of which is flush with the inner wall of the pressure pipe.
• the inner wall of the pressure pipe 10 and ring 20 is lined with a foil 22 made of Teflon, which protrudes into annular recesses 24 at both ends.
• the magnetic separating ring 30 with a ring bearing 32 projects beyond the inner diameter of the pressure tube 10.
• Another ring 34 used for storage is arranged in the end section of the pressure tube facing away from the core 12.
• This bearing ring 34 has an inwardly projecting ring bearing 36 corresponding to the ring bearing 32.
• These ring bearings 32 and 36 guide the armature 18 with low friction with small tolerances.
• the ring bearings 32 and 36 can be equipped with axial oil guide grooves, not shown in the drawing.
• the rings 30 and 34 can be inserted between pressure pipe sections and welded or soldered to the pressure pipe.
• the ring 30 causing the magnetic separation is made of non-ferromagnetic material, for example brass or non-ferromagnetic steel, e.g. Remanit.
• the other bearing ring 34 is made of the same material, but it is also possible to produce this ring from a different material which has favorable bearing properties.
• FIG. 4 shows a solid pre-turned part 38 with a fully formed pole core 12 and two ring grooves 40 and 42, which are V-shaped in cross section, into which metal rings 44, 46 are inserted by cladding.
• the pre-turned part shown in FIG. 4 is then finely machined in one clamping and working step in order to create the bearing body shown in FIG. 3.
• Reference list

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

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ID=7867819

Family Applications (1)

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Cited By (1)

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Citations (4)

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• 1998
  • 1998-05-14 DE DE1998121741 patent/DE19821741C2/de not_active Expired - Lifetime
• 1999
  • 1999-05-12 WO PCT/EP1999/003293 patent/WO1999059169A1/de active Application Filing
  • 1999-05-12 CA CA002331715A patent/CA2331715A1/en not_active Abandoned

Patent Citations (4)

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