US3777236A - Reciprocating motor - Google Patents
Reciprocating motor Download PDFInfo
- Publication number
- US3777236A US3777236A US00300743A US3777236DA US3777236A US 3777236 A US3777236 A US 3777236A US 00300743 A US00300743 A US 00300743A US 3777236D A US3777236D A US 3777236DA US 3777236 A US3777236 A US 3777236A
- Authority
- US
- United States
- Prior art keywords
- magnetic circuit
- stationary
- secondary turns
- auxiliary magnetic
- auxiliary
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
-
- 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
-
- 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
- H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
Definitions
- a motion electromagnet having a main magnetic circuit with an exciting coil.
- An auxiliary magnetic circuit under the influence of the magnetic flux of the main magnetic circuit has a movable and a stationary part with movable and stationary windings respectively therein which are off-set with a constant air gap maintained between the stationary and movable parts.
- Energizing the exciting coil of the main magnetic circuit moves the movable parts of the auxiliary magnetic circuit into alignment with the stationary part.
- Another object of the invention is to elimate shocks of the electromagnet where it is used for generating vibrations.
- Still another object of this invention is to provide an electromagnet with a substantially more uniform pull force than obtained with currently used electromagnets.
- a motion electromagnet having a main magnetic circuit with an exciting coil, connected to a source of electric alternating current by way of a switching device.
- the main magnetic circuit is provided with a pair of coaxial shortcircuited secondary turns, one turn being stationary and the other turn being movable with respect to the first in the direction of their common axis.
- An auxiliary magnetic core or circuit encompasses the pair of coaxial secondary turns, and consists of a stationary part, encompassing a part of the stationary secondary turn and of a movable part, encompassing a part of the movable secondary turn, with a constant air gap between both parts of the auxiliary magnetic circuit.
- the main and auxiliary magnetic circuits are symmetrically duplicated and alternatively actuated by said source via said switching means for providing an oscillating motion in the electromagnet.
- FIG] is a cross-sectional view of one embodiment of the electromagnet of the present invention taken along lines II of FIG.2.
- FIG.2 is a cross-sectional view, the left-hand portion of which is taken along lines IIlI of FIG.3 and the right-hand portion of which is taken along lines Il'II' of FIG.3.
- FIG.3 is a cross-sectional view of FIG] taken along line Ill-lll.
- the motion electromagnet shown in the drawings has two mutually electrically and magnetically independent magnetic circuits 1 with exciting coils 2.
- the exciting coils 2 are alternately connected by a conventional switching device in the required rhythms to a source 16 of alternating current.
- this switching device is indicated schematically as a changeover switch 15.
- Both main magnetic circuits 1 are either mutually directly fixed, or maintained at a distance by connecting pieces or spacers 11 (see FIG.2).
- Each of these main magnetic circuits 1 is provided with a pair of coaxial short-circuited secondary turns or windings 3 and 4, the turns 3 being stationary and the turns 4 being shiftable or movable with respect to turns 3 in the direction of their common axis.
- Each pair of secondary turns 3 and 4 are encompassed by an auxiliary magnetic circuit 5 and 6, respectively, consisting of a stationary core or part 5 encompassing a part of the stationary secondary turn 3 and fixed to the main magnetic circuit 1 by brackets 17 of non-magnetic material (see FIG.2,3) and of a mobile or movable core or part 6 encompassing a part of the mobile secondary turn 4.
- the movable core 6 is posited for linear movement on and guided by guidings 12 (see FIG.1), positioned between both secondary turns 3 and 4 and enabling a mutually free movement of both turns 3 and 4 in the direction of their common axis.
- the arrangement can, however, be easily modified to provide for a swinging motion of the movable core 6 by suspending the mobile core 6 (not illustrated) or supporting it by means of bearings (not illustrated).
- the auxiliary magnetic circuits 5 and 6 are closed via a constant air gap 7, whereby both their stationary parts 5 and their mobile parts 6 have the shape of a horse shoe (see F163) and the gaps of the horse shoes are occupied by the secondary turns 3 and 4.
- the air gap 7 is as small as possible with a distance of 0.2 mm being generally sufficient.
- a pair of short-circuited auxiliary turns 8 and 9 are embedded into the surfaces of the magnetic circuits 5 and 6 forming the air gap 7.
- the auxiliary turns 8 and 9 perform the function of suppressing vibrations generated by the frequency of the alternating feeding current.
- the corresponding auxiliary turns 8 and 9 on the stationary and mobile parts 5 and 6 of the auxiliary magnetic circuits are in register or alignment when the stationary and mobile secondary turns 3 and 4 are in register. This case is indicated in the right part of FIG.3.
- the mobile turns 4 and mobile parts 6 of the auxiliary magnetic circuits corresponding to both main magnetic circuits 1 are mutually connected by adjustable connecting elements 10, by'means of which the magnitude of their deviation with respect to the stable secondary turns 3 and parts 5 of the auxiliary magnetic circuits can be adjusted.
- adjustable connecting elements 10 for cases of extreme deviations stops 14 are provided on the main magnetic circuits 1 (see FIG.2) which are, however, normally out of action or not used.
- the movable parts 6 are spaced from the cores 1 by the gap 13 (F101).
- Alternating electric current is applied by the switching device 15 from the source 16 alternately exciting coils 2 of the main magnetic circuits 1.
- the switching device 15 is advantageously adapted to enable the adjustment of the switching-over from relatively low speeds up to speeds corresponding to the resonant frequency of the arrangement, to which the vibrating movement has to be transmitted.
- the switching device 15 can be based on any suitable known principle, for instance being driven by an electric motor or by a suitable conventional electronic circuit for accomplishing the desired switching function and can include conventional switching speed adjusting means 15'.
- the introduction of current into the exciting coil 2 of the main magnetic circuit 1 causes generation of currents in both secondary turns 3 and 4 which induce magnetic fluxes in the auxiliary magnetic circuits 5 and 6 and tends to bring parts 5 and 6 thereof into alignment.
- both the main and auxiliary magnetic circuits can be adjusted differently for oscillations in a straight direction or for oscillations in the shape of swinging around a common axis, while maintaining a constant air gap, without deviating from the scope of this invention.
- the motion electromagnet has to secure some constant position of some part, for instance a constant position of a cut-in or cut-out contactor, operating in a medium, where it is exposed to vibrations so that there is a possibility that its position could be unfavorably influenced by these vibrations
- a single main magnetic circuit 1 with a pair of secondary turns 3 and 4 and the respective auxiliary magnetic circuit 5 and 6 can be provided.
- only one-half the symmetrical magnetic and electrically operated structure shown in the drawings would be-employed.
- a motion electromagnet having a constant air gap and an increased initial pull force comprising a. a main magnetic circuit having an exciting coil for generating a magnetic flux in said main magnetic circuit;
- switch means coupled between said source of potential and said exciting coil for selectively actuating said exciting coil
- an auxiliary magnetic circuit encompassing both said first and secondary turns having a stationary part encompassing a part of said first secondary turns and a mobile part encompassing a part of said secondary turns;
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electromagnets (AREA)
- Linear Motors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS754271A CS153699B1 (ru) | 1971-10-26 | 1971-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3777236A true US3777236A (en) | 1973-12-04 |
Family
ID=5424754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00300743A Expired - Lifetime US3777236A (en) | 1971-10-26 | 1972-10-25 | Reciprocating motor |
Country Status (10)
Country | Link |
---|---|
US (1) | US3777236A (ru) |
JP (1) | JPS4850259A (ru) |
CA (1) | CA952174A (ru) |
CS (1) | CS153699B1 (ru) |
DE (1) | DE2245947A1 (ru) |
FR (1) | FR2157940A1 (ru) |
GB (1) | GB1348084A (ru) |
IT (1) | IT968745B (ru) |
SE (1) | SE376337B (ru) |
SU (1) | SU507901A1 (ru) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891874A (en) * | 1973-05-31 | 1975-06-24 | Mechanical Tech Inc | Compensated reciprocating electrodynamic machine |
US6225713B1 (en) * | 1999-03-11 | 2001-05-01 | Teijin Seiki Co., Ltd | Electromagnetic force motor and method of manufacturing the same |
WO2002037650A1 (fr) * | 2000-11-06 | 2002-05-10 | Viktor Pavlovich Gorobtsov | Moteur magnetique |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2839340A1 (de) * | 1978-09-09 | 1980-03-27 | Daimler Benz Ag | Elektromagnetische vorrichtung zur betaetigung schneller schaltglieder |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US824953A (en) * | 1904-11-07 | 1906-07-03 | Paul Schiemann | Electric tool. |
US2003647A (en) * | 1930-06-04 | 1935-06-04 | Dillstrom Torbjorn Viktor | Electric motor |
US2690128A (en) * | 1950-03-24 | 1954-09-28 | North American Solvay Inc | Electromagnetic pumping device |
US3130334A (en) * | 1960-11-04 | 1964-04-21 | Nowak Kazimierz Marian | Reciprocating motor |
US3161793A (en) * | 1960-09-13 | 1964-12-15 | Nat Res Dev | Electrical machines involving the reciprocation of moving parts |
US3453463A (en) * | 1968-02-05 | 1969-07-01 | Gulf General Atomic Inc | Electrodynamic actuator |
-
1971
- 1971-10-26 CS CS754271A patent/CS153699B1/cs unknown
-
1972
- 1972-03-28 GB GB4518172A patent/GB1348084A/en not_active Expired
- 1972-09-19 DE DE2245947A patent/DE2245947A1/de active Pending
- 1972-09-20 CA CA152,203A patent/CA952174A/en not_active Expired
- 1972-10-06 IT IT30228/72A patent/IT968745B/it active
- 1972-10-20 SE SE7213595A patent/SE376337B/xx unknown
- 1972-10-23 JP JP47105375A patent/JPS4850259A/ja active Pending
- 1972-10-25 US US00300743A patent/US3777236A/en not_active Expired - Lifetime
- 1972-10-25 FR FR7237753A patent/FR2157940A1/fr not_active Withdrawn
- 1972-10-25 SU SU1843077A patent/SU507901A1/ru active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US824953A (en) * | 1904-11-07 | 1906-07-03 | Paul Schiemann | Electric tool. |
US2003647A (en) * | 1930-06-04 | 1935-06-04 | Dillstrom Torbjorn Viktor | Electric motor |
US2690128A (en) * | 1950-03-24 | 1954-09-28 | North American Solvay Inc | Electromagnetic pumping device |
US3161793A (en) * | 1960-09-13 | 1964-12-15 | Nat Res Dev | Electrical machines involving the reciprocation of moving parts |
US3130334A (en) * | 1960-11-04 | 1964-04-21 | Nowak Kazimierz Marian | Reciprocating motor |
US3453463A (en) * | 1968-02-05 | 1969-07-01 | Gulf General Atomic Inc | Electrodynamic actuator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891874A (en) * | 1973-05-31 | 1975-06-24 | Mechanical Tech Inc | Compensated reciprocating electrodynamic machine |
US6225713B1 (en) * | 1999-03-11 | 2001-05-01 | Teijin Seiki Co., Ltd | Electromagnetic force motor and method of manufacturing the same |
WO2002037650A1 (fr) * | 2000-11-06 | 2002-05-10 | Viktor Pavlovich Gorobtsov | Moteur magnetique |
Also Published As
Publication number | Publication date |
---|---|
CS153699B1 (ru) | 1974-03-29 |
DE2245947A1 (de) | 1973-05-03 |
FR2157940A1 (ru) | 1973-06-08 |
CA952174A (en) | 1974-07-30 |
GB1348084A (en) | 1974-03-13 |
SE376337B (ru) | 1975-05-12 |
IT968745B (it) | 1974-03-20 |
SU507901A1 (ru) | 1976-03-25 |
JPS4850259A (ru) | 1973-07-16 |
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