US3761850A - Permanent magnetic flux circuit and an actuating member with adjusting means - Google Patents

Permanent magnetic flux circuit and an actuating member with adjusting means Download PDF

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Publication number
US3761850A
US3761850A US00222954A US3761850DA US3761850A US 3761850 A US3761850 A US 3761850A US 00222954 A US00222954 A US 00222954A US 3761850D A US3761850D A US 3761850DA US 3761850 A US3761850 A US 3761850A
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US
United States
Prior art keywords
armature
operating member
magnetic
igniter
magnet
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
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US00222954A
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English (en)
Inventor
H Schindler
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Braun GmbH
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Braun GmbH
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Filing date
Publication date
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Publication of US3761850A publication Critical patent/US3761850A/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/06—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving flux distributors, and both coil systems and magnets stationary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks

Definitions

  • the invention relates to magnetic igniters, and relates more particularly to magnetic igniters of the type that have a magnetic flux circuit including a magnet that has two poles and an armature that is movable between a closed, circuit making, position and, respectively, an open circuit breaking position at an angle to the closed position; and an operating member is provided for moving the armature from the closed position to the open position.
  • the operating member is actuatable by an actuating means.
  • the operating member is actuated by the actuating means exerting a pressure onto the operating member.
  • the actuating means may, for instance, be a torsion rod, reference being had to US. Pat. No. 3,610,793, dated Oct. 5, 1971, of G. Steuernagel et al., that is bent near its lower end at an angle, facilitating the actuation of the operating member.
  • the operating member In the inactive rest position of the actuating means, for example the aforesaid torsion rod, the operating member should be pretensioned, at least lightly, to retain the actuating means in the aforesaid inactive or rest position.
  • a further object of the invention is to provide such a magnetic igniter that can be so adjusted that the actuating means and the operating member are in proper position relative to each other.
  • the instant invention provides for adjusting means near the operating member operable to pre-tension adjustably the operating member.
  • the adjusting means include a fixed leaf spring and a screw.
  • the leaf spring may at least partially overlap the elongated operating member, and may, like the operating member, be secured to the armature, and the screw may be in threaded engagement with the leaf spring and be in contact with the operating member to pretension the operating member.
  • the actuating means may be connected to the wall of the housing that receives the magnetic igniter, for instance the housing of the aforesaid pocket lighter.
  • the screw may be threaded into the aforesaid wall of the housing of the pocket lighter, and the screw be adjustable from the exterior of the housing, pre-tensioning the operating member inside the housing.
  • the instant invention offers the advantage of optimum adjustment of the operating member in simple and expeditious manner.
  • the instant invention furthermore offers the advantage that the tolerances may be increased, thereby reducing the amount of waste and the attendant costs.
  • FIG. 1 is a perspective view of a magnetic flux circuit with adjustment means, in accordance with an embodiment of the invention
  • FIG. 2 is a fragmentary elevational view, partly in section, ofa magnetic igniter with modified adjustment means including a fragment of the wall of a housing that receives the magnetic igniter;
  • FIG. 3 is a sectional view of the embodiment of this invention as shown in FIG. 1;
  • FIG. 4 is a perspective view of the embodiment of FIG. 1 showing the open position of the magnetic flux circuit of this invention.
  • a magnetic igniter system that includes a magnetic flux circuit comprising a permanent magnet l which has a soft iron core 2 for a coil 19 and an armature 3.
  • the magnet I and core 2 form a U- shaped structure with two poles, and the poles have upper surfaces 4 and 5, respectively.
  • Sparking electrodes 18 of the igniter are connected to the igniter coil 19 in a conventional manner (FIG. 4).
  • the armature in the closed position shown in FIGS. 1 and 2, extends throughout the entire width of the U- shape,'and covers the upper pole surfaces 4 and 5 with corresponding surface portions 6 and 7 which form a part of the inner surface 3a of the armature 3.
  • a resilient operating member 8 is secured to an end surface 10 of the armature 3, for instance by means of a screw 9 or a rivet, or by other suitable conventional means.
  • the end surface of the armature 3 may, as indicated in FIG. 1, be at least partially inclined, or, as shown in FIG. 2, be at right angles to the direction of elongation of the armature 3.
  • the angle that is formed between the armature 3 and the operating member 8 is built in accordance with the necessary requirements for moving the armature through its angular stroke from its closed position shown in FIGS. 1 and 2 to the open, circuit breaking position (not shown), at an angle to the closed position; thus, the aforesaid angle, which is termed the operating angle depends from the size of the angular stroke of the armature between its closed and open positions.
  • the armature 3 and the operating member 8, in both views are tiltably supported, and hence borne, at the apex 12 of the said operating angle, on the uppermost edge of the magnet 1, which edge, among all the edges of the magnet poles l and 2, is closest to the operating member 8.
  • the aforesaid edge is disposed at right angles to the direction of elongation of the armature 3, and in the direction of the end surface 10, and functions as a fulcrum edge 3b for the armature 3 and the operating member 8.
  • the core 2, the magnet l and the armature 3 are held together by the elctromagnetic force of the permanent magnet 1.
  • the operating member 8 is secured to the end surface 10 of the armature 3.
  • Adjusting means are provided which, in the embodiment of FIG. 1, include a leaf spring 11 that is also secured to the end surface 10 of the armature 3, and a screw 13 which is threaded in a threaded hole 13a that is disposed near the free end of the leaf spring 11.
  • the screw 13 bears with its tip against the outer surface of the operating member 8, and upon turning the screw, the operating member 8 can be adjustably pretensioned.
  • the actuating means include a portion of the wall 14 of the housing, for instance a pocket lighter housing, thatreceives on its interior the magnetic igniter including the magnet l, the armature 3 and the operating member 8. It also receives actuating means on its interior, for instance a torsion rod 17.
  • the housing wall 14 has a bore 15 that includes a threaded hole 16 in which there is engaged a screw 13. The end of the screw 13 engages the outer surface of the operating member 8; likewise, the torsion rod 17 engages the outer surface of the operating member 8.
  • the screw 13 serves to pre-tension the operating member 8 for proper engagement, in the inactive position, with the end of the torsion rod 17.
  • the depth of the bore 15 is so arranged as to be in accord with the needed adjustment range of the screw 13.
  • the arrow P indicates the direction in which the actuating means will exert its force against the outer surface of the operating member 8.
  • the actuating member for instance the free end of the torsion rod 17, in the direction ,P" (FIG. 1 this will bring about a movement of the armature 3 from its closed position (shown in FIGS. 1, 2) to the open position at an angle thereto, thereby causing a breaking of the magnetic flux circuit.
  • a permanent magnetic flux circuit including a permanent magnet, an L-shaped soft iron core and an armature
  • said magnet and said core forming a U-shaped magnetic structure with two poles-having upper surfaces arranged in a plane;
  • the upper pole surface of the magnet forming with an adjacent outer side surface of said magnet an agle of substantially thus definning a tilting edge
  • the armature extending throughout the entire width of the U-shaped structure and covering the upper pole surfaces with corresponding surface portions which form a part of the inner surface of the armature;
  • said armature being mounted tiltably about said edge between a magnetic flux closing position in which it bridges said upper pole surfaces and, respectively, a magnetic flux opening position in which it is inclined relative to said plane;
  • a resilient, energy storing, operating member being attached to the end surface of said armature in the region of tilting
  • said operating member having a lever portion forming with armature an apex abutting against said edge;
  • said lever portion and said inner armature surface forming an operating angle ranging from about to about l 15 in the magnetic flux closing position of the armature, whereby upon actuation of said lever portion overcoming the magnetic attraction force exerted against the armature by the U-shaped magnetic structure in the flux closing position, the armature will be tilted about said edge from the flux closing position toward the flux opening position;
  • adjusting means including a threaded screw operable to preset adjustably the angular position of said operating member with respect to said permanent magnet, thereby pre-setting the angular stroke of said armature.
  • said operating member being connected with one end portion to said armature and having its other end portion free, and being movable resiliently angularly relative to said permanent magnet, said adjusting means pretensioning said operating member angularly relative to said armature.
  • said adjusting means including a leaf spring, said crew being in threaded engagement with said leaf spring, and operable to be in contact with said operating member, and being operative to pre-tension said operating member adjustably.
  • threaded screw being in threaded engagement with said wall and in contact with said operating member and being operative to pre-tension said operating member and thereby said armature against said magnetic force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Electromagnets (AREA)
  • Lighters Containing Fuel (AREA)
US00222954A 1971-08-24 1972-02-02 Permanent magnetic flux circuit and an actuating member with adjusting means Expired - Lifetime US3761850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712142293 DE2142293A1 (de) 1971-08-24 1971-08-24 Magnetzunder

Publications (1)

Publication Number Publication Date
US3761850A true US3761850A (en) 1973-09-25

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ID=5817593

Family Applications (1)

Application Number Title Priority Date Filing Date
US00222954A Expired - Lifetime US3761850A (en) 1971-08-24 1972-02-02 Permanent magnetic flux circuit and an actuating member with adjusting means

Country Status (9)

Country Link
US (1) US3761850A (enrdf_load_stackoverflow)
JP (1) JPS4830567A (enrdf_load_stackoverflow)
AT (1) AT308447B (enrdf_load_stackoverflow)
DE (1) DE2142293A1 (enrdf_load_stackoverflow)
ES (1) ES400107A1 (enrdf_load_stackoverflow)
FR (1) FR2150280A1 (enrdf_load_stackoverflow)
IL (1) IL38832A0 (enrdf_load_stackoverflow)
IT (1) IT992048B (enrdf_load_stackoverflow)
NL (1) NL7202443A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834305A (en) * 1972-08-23 1974-09-10 Suwa Seikosha Kk Printer
US4020369A (en) * 1974-07-12 1977-04-26 Westinghouse Electric Corporation Compact mechanically-powered electric generator for a camera or other apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349515A (en) * 1976-10-18 1978-05-06 Eidai Co Ltd Print decorated board
WO1997030308A2 (de) * 1996-02-12 1997-08-21 Pohl & Müller Gmbh Mess- Und Regeltechnik Sicherheitseinrichtung

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161806A (en) * 1961-03-06 1964-12-15 Control device and circuits for electric bedcovers
CA737572A (en) * 1966-06-28 Western Electric Company, Incorporated Magnetically latched switch
US3424950A (en) * 1964-09-21 1969-01-28 Richard Halm Magnetic make and break igniter
US3444435A (en) * 1966-07-16 1969-05-13 Richard Halm Electromagnetic ignition device,particularly for lighters
US3449636A (en) * 1967-03-16 1969-06-10 Braun Ag System for generating nonperiodical electric sparks
US3458765A (en) * 1966-09-14 1969-07-29 Blaun Ag Magnetic igniter for lighters
US3543203A (en) * 1967-08-11 1970-11-24 L Ind Electr De La Seine Electro-magnetic ultra-sensitive tripping devices
US3559131A (en) * 1967-11-14 1971-01-26 Braun Ag Magnetic ignition system
US3581115A (en) * 1968-06-22 1971-05-25 Siemens Ag Pulse generator for providing a plurality of pulses in determined phase positions
US3584247A (en) * 1968-01-18 1971-06-08 Braun Ag Actuator for an ignition device
US3602622A (en) * 1968-11-21 1971-08-31 Braun Ag Lighter
US3610793A (en) * 1968-09-25 1971-10-05 Braun Ag Lighter
US3612736A (en) * 1968-07-20 1971-10-12 Braun Ag System for actuating cigarette lighters

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA737572A (en) * 1966-06-28 Western Electric Company, Incorporated Magnetically latched switch
US3161806A (en) * 1961-03-06 1964-12-15 Control device and circuits for electric bedcovers
US3424950A (en) * 1964-09-21 1969-01-28 Richard Halm Magnetic make and break igniter
US3444435A (en) * 1966-07-16 1969-05-13 Richard Halm Electromagnetic ignition device,particularly for lighters
US3458765A (en) * 1966-09-14 1969-07-29 Blaun Ag Magnetic igniter for lighters
US3449636A (en) * 1967-03-16 1969-06-10 Braun Ag System for generating nonperiodical electric sparks
US3543203A (en) * 1967-08-11 1970-11-24 L Ind Electr De La Seine Electro-magnetic ultra-sensitive tripping devices
US3559131A (en) * 1967-11-14 1971-01-26 Braun Ag Magnetic ignition system
US3584247A (en) * 1968-01-18 1971-06-08 Braun Ag Actuator for an ignition device
US3581115A (en) * 1968-06-22 1971-05-25 Siemens Ag Pulse generator for providing a plurality of pulses in determined phase positions
US3612736A (en) * 1968-07-20 1971-10-12 Braun Ag System for actuating cigarette lighters
US3610793A (en) * 1968-09-25 1971-10-05 Braun Ag Lighter
US3602622A (en) * 1968-11-21 1971-08-31 Braun Ag Lighter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834305A (en) * 1972-08-23 1974-09-10 Suwa Seikosha Kk Printer
US4020369A (en) * 1974-07-12 1977-04-26 Westinghouse Electric Corporation Compact mechanically-powered electric generator for a camera or other apparatus

Also Published As

Publication number Publication date
IL38832A0 (en) 1972-04-27
NL7202443A (enrdf_load_stackoverflow) 1973-02-27
ES400107A1 (es) 1974-12-16
JPS4830567A (enrdf_load_stackoverflow) 1973-04-21
IT992048B (it) 1975-09-10
DE2142293A1 (de) 1972-09-14
FR2150280A1 (enrdf_load_stackoverflow) 1973-04-06
AT308447B (de) 1973-07-10

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