EP0774763B1 - Elektromagnet mit beweglichem Bremskörper - Google Patents
Elektromagnet mit beweglichem Bremskörper Download PDFInfo
- Publication number
- EP0774763B1 EP0774763B1 EP96118330A EP96118330A EP0774763B1 EP 0774763 B1 EP0774763 B1 EP 0774763B1 EP 96118330 A EP96118330 A EP 96118330A EP 96118330 A EP96118330 A EP 96118330A EP 0774763 B1 EP0774763 B1 EP 0774763B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- brake body
- anchor
- coil
- attenuator
- 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.)
- Expired - Lifetime
Links
Images
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
- H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
-
- 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
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- 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
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
- H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
Definitions
- the invention relates to an electromagnet consisting of a magnetic coil that can move along the axis of the coil Receives armature, wherein a guidance of the magnetic field is provided is and an attenuator and brake body, both are arranged outside the magnetic circuit, the movement of the armature brakes by placing the armature over the brake body acts on the attenuator.
- Electromagnets of the type described above are for a Variety of uses. For example, find such magnets in hydraulic systems for controlling the valves or as a solenoid etc. use.
- the mechanical load the anchor during the switching operations is enormous. To the Being able to switch anchors quickly at the appropriate cycle times the moving mass of the anchor is to reach the machines been reduced.
- the movement of the armature is in the end position brake the anchor. Damping devices are necessary for this, which anchoring the anchor too hard on his Exclude stroke limitation.
- the hard hitting of the anchor leads to increased wear and thus a shorter service life.
- the attenuators in a simple manner through an elastic device, for example an annular disc, Form a spring or the like, which in the working air gap are arranged.
- the working air gap is the Space between the armature and the magnetic core, when the current is applied the coil is overcome and thus the armature movement causes.
- An electromagnet is known from EP 217 969 A1 Damping device arranged outside the magnetic circuit and consists of a brake body that is free of play is stored between two elastic ring elements.
- the brake body absorbs the energy of the anchor hitting it and dismantles it via the ring element 25.
- the mass of the brake body is a multiple of that of the armature, so that it bounces back a little after impact. This energy is used to initiate the next stroke.
- the present invention has set itself the task of Damping the armature of the electromagnets described above to improve.
- the purpose of this is to increase the life of the magnets be, while short switching times of the electromagnet be realized and spring back of the armature after Avoid impact on the brake body and the attenuator becomes.
- the invention is based on one Electromagnets, as described in the introduction, and suggests that the mass of the armature and the mass of the brake body approximately are the same size.
- the configuration according to the invention makes it possible to do without an attenuator in the working gap. from that high force results when the working gap between Armature and magnetic core goes to zero.
- the magnetic circle is u. a. formed by a magnetic core that the magnetic field lines into the coil interior, and one z. B. cylindrical enclosure of the coil. Aim this magnetic circuit is to make magnetic field lines as possible efficiently into the inside of the coil in the area of the air gap lead to create a high density of field lines there and thus optimizing the possible pulling force.
- the arrangement of the Brake body and the attenuator outside of magnetic circuit allows others for these elements Materials, for example non-magnetizable materials, too use. It is also beneficial if the two function groups, Damping of armature movement and magnetic flux guidance, are separated from each other because they are both individual components ideally coordinated and optimized can.
- Attenuator is provided between the armature and the brake body.
- This further attenuator can, for example, within the magnetic Circle be arranged. Through an interposed Part of the kinetic energy is already destroyed.
- a return spring on the anchor acts. It is possible that only a simple one in the electromagnet Tightening movement is realized when the coil is applied becomes. When the power is turned off, the Spring pulling back the anchor into the desired starting position. For this purpose, it is provided that the return spring, for example engages a flange of the armature.
- the movement of the armature can occur due to the application of current the magnetic coil or the return movement of the return spring he follows.
- Wear-resistant arrangement of the anchor realized. The wear occurs due to a high acceleration on the anchor works. Such acceleration occurs, for example when the anchor hits the stroke limiter.
- Both the Return spring as well as the current applied to the coil causes an acceleration of the armature caused by the Proposal according to the invention is braked.
- an adjusting device is provided for the brake body and the attenuator.
- a Adjustment device it is possible to fine-tune the To achieve damping.
- the basic position of the anchor can be determined. Due to the adjustability it is possible to prevent the anchor from bouncing off, which would otherwise affect the lifespan of the would lead magnets.
- the electromagnet according to the invention is in schematically shown a vertical section.
- the electromagnet 1 consists essentially of an armature 2, which is movable along the coil axis 12 of the coil 10.
- the coil has a coil body, for example made of plastic on which is surrounded by a shell-like holder 7 is.
- the bracket 7 also forms part of the magnetic Guidance of the magnetic field caused by the application of current Coil is generated.
- the armature 2 has an outstanding one from the electromagnet 1 Anchor rod 20 on. For this purpose, there is an opening 50 in the housing 5 intended. There is also a guide or warehouse here 24 of the anchor rod 20. Furthermore, the inside of the Coil 10 a guide 25 for the armature 2.
- the armature 2 On the end of the coil 10 opposite the opening 50 the armature 2 has an armature flange 21 which is no longer in the coil 10 protrudes.
- a return spring engages on this flange 21 23 at the other end of the sleeve 13 of the Coil body is supported in a groove 14.
- the return spring 23 is designed as a conical coil spring or the like.
- the direction of action of the spring 23 is the direction of action of the opposed to energized electromagnets. at switched off current, the return spring 23 presses the armature to the right in the retracted position. When current is applied the anchor rod is extended to the left and the air gap 3 (working air gap) is bridged and closed. This creates a high attraction force of the electromagnet reached.
- the braking device 4 is in one own sleeve 43 is provided, which on the opposite of the opening 50 End of the electromagnet is provided.
- the Sleeve 43 is closed by the bolt 42. According to the invention it is proposed that the braking device 4 outside the Guide 11 of the magnetic field is arranged. That means, that the two functional groups, magnetic circuit and the mechanical damping can be optimized separately can.
- the Armature 2 first acts on an attenuator 22.
- This attenuator 22 already takes up part of the kinetic energy of anchor 2, but on the other hand gives a part of it Energy on the brake body 41 further.
- the brake body 41 is pressed against the attenuator 40 and the remaining kinetic energy destroyed by deformation energy.
- the attenuator 40 is supported on the bolt 42 at the end of the housing 45 from.
- An adjusting nut 44 enables an accurate Adjustment of the braking device 4 and forms an adjusting device.
- the mass of the brake body 41st is equal to the mass of the armature 2.
- Electromagnet 1 with a plug contact is shown, which consists of several pins 60 exists and for the power supply to the coil 10 of the Electromagnet 1 is used.
- the kinetic energy destroyed by the braking device 4 can both from the return spring 23 and from a tightening movement of the armature 2 originate from an air gap 3.
- the task of damping the intercepting movement of the armature 2 is in both cases the same.
- the damping independent of the magnetic properties (lifting force, etc.) be optimized.
- This optimization can be done by appropriate Dimensioning of the brake body (for example mass) or the thickness of the attenuator.
- By an appropriate Design of these elements it is also possible reduce specific loads. You can do this, for example large cross sections between the brake body and the attenuator be provided in the area of the magnetic guide, for example in the coil, only with losses in the magnetic Properties can be achieved. This will the economy and the lifespan of the electromagnet elevated.
- the brake body can for example be made of non-magnetizable Material.
Description
Claims (6)
- Elektromagnet, bestehend aus einer Magnetspule, die einen längs der Spulenachse beweglichen Anker aufnimmt, wobei eine Führung des magnetischen Feldes vorgesehen ist und ein Dämpfungsglied und Bremskörper, die beide außerhalb des magnetischen Kreises angeordnet sind, die Bewegung des Ankers bremst, indem der Anker über den Bremskörper auf das Dämpfungsglied wirkt, dadurch gekennzeichnet, daß die Masse des Ankers (2) und die Masse des Bremskörpers (41) annähernd gleich groß sind.
- Elektromagnet nach Anspruch 1, dadurch gekennzeichnet, daß ein weiteres Dämpfungsglied (22) zwischen dem Anker (2) und dem Bremskörper (41) vorgesehen ist.
- Elektromagnet nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Rückstellfeder (23) auf den Anker wirkt.
- Elektromagnet nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet, durch die Bewegung des Ankers (2) aufgrund der Strombeaufschlagung der Magnetspule (10) oder der Rückstellkraft der Rückstellfeder (23).
- Elektromagnet nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Mehrzahl von Bremskörpern (41) und Dämpfungsgliedern (40) vorgesehen ist, um die Bewegungsenergie des Ankers (2) zu übertragen beziehungsweise aufzunehmen.
- Elektromagnet nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Einstellvorrichtung für das Dämpfungsglied (40) und den Bremskörper (41) vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19543141A DE19543141A1 (de) | 1995-11-18 | 1995-11-18 | Elektromagnet mit beweglichem Bremskörper |
DE19543141 | 1995-11-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0774763A2 EP0774763A2 (de) | 1997-05-21 |
EP0774763A3 EP0774763A3 (de) | 1997-09-03 |
EP0774763B1 true EP0774763B1 (de) | 2002-01-30 |
Family
ID=7777867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96118330A Expired - Lifetime EP0774763B1 (de) | 1995-11-18 | 1996-11-15 | Elektromagnet mit beweglichem Bremskörper |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0774763B1 (de) |
DE (2) | DE19543141A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10153428A1 (de) * | 2001-10-30 | 2003-05-15 | Zahnradfabrik Friedrichshafen | Elektrisch betätigtes Wegeventil |
DE102019203949B3 (de) * | 2019-03-22 | 2020-09-03 | Magna powertrain gmbh & co kg | Elektromagnet |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2639274B2 (de) * | 1976-09-01 | 1978-08-24 | Binder Magnete Gmbh, 7730 Villingen | Elektromagnet mit Ankerschwingungsdämpfung |
EP0217969A1 (de) * | 1985-09-28 | 1987-04-15 | Mannesmann Tally Ges. mbH | Tauchankerelektromagnet für Frequenzen im Bereich bis 3000 Hz und Höher |
DE3632475A1 (de) * | 1986-04-11 | 1988-03-31 | Rexroth Mannesmann Gmbh | Geraeuschdaempfungsvorrichtung, inbesondere fuer hydraulische und pneumatische ventile sowie fuer betaetigungsmagneten |
DE3905992A1 (de) * | 1989-02-25 | 1989-09-21 | Mesenich Gerhard | Elektromagnetisches hochdruckeinspritzventil |
-
1995
- 1995-11-18 DE DE19543141A patent/DE19543141A1/de not_active Withdrawn
-
1996
- 1996-11-15 EP EP96118330A patent/EP0774763B1/de not_active Expired - Lifetime
- 1996-11-15 DE DE59608672T patent/DE59608672D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0774763A2 (de) | 1997-05-21 |
DE19543141A1 (de) | 1997-05-22 |
DE59608672D1 (de) | 2002-03-14 |
EP0774763A3 (de) | 1997-09-03 |
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