US3760313A - Permanent magnetic flux circuit and an actuating member for igniters - Google Patents

Permanent magnetic flux circuit and an actuating member for igniters Download PDF

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Publication number
US3760313A
US3760313A US00220817A US22081772A US3760313A US 3760313 A US3760313 A US 3760313A US 00220817 A US00220817 A US 00220817A US 22081772 A US22081772 A US 22081772A US 3760313 A US3760313 A US 3760313A
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United States
Prior art keywords
armature
operating member
end surface
igniter
electromagnetic
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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US00220817A
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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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Publication date
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Publication of US3760313A publication Critical patent/US3760313A/en
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    • 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

  • An electromagnetic combination for igniters having a permanent magnetic flux circuit including a permanent magnet, an L-shaped soft iron core and an armature, said armature in the closed position closes the magnetic flux circuit and in the open position interrupts the magnetic flux circuit; and an energy storing operating member connected to the armature and extending from the magnet at an operating angle that is sufflciently large to move the armature from the closed position to the open position, when actuated.
  • 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 having 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 energy storing operating member is provided for moving the armature from the closed position to the open position.
  • Magnetic igniters of the foregoing type are particularly useful for lighters, and desirable features for such magnetic igniters include reliability and safety of handling, and these features generally are found in such igniters previously described.
  • a magnetic igniter in French Pa tent No. 1,591,41 l, a magnetic igniter is disclosed which has a magnetic flux circuit and an operating member which either directly or indirectlyis connected to the angularly movable armature; and on the external side of the magnet there is mounted a bearing element that includes a bearing pin about which a second bearing element is movable that is connected to the armature.
  • the magnetic igniters of the prior art are, however, deficient therein that the bearing structure for the armature that moves between two positions at an angle to each other is complex and costly. Furthermore, the magnetic igniters that have become known, due to the complexity of the bearing elements, require a size which makes the magnetic igniter unwieldy for use in connection with small size pocket lighters.
  • the invention consists in the novel construction, arrangement and combination of various devices, elements and parts, as set forth in the claims hereof, certain embodiments of the same being illustrated in the accompanying drawings and described in the specificatron.
  • the instant invention provides for an arrangement in which the operating member and the armature are so disposed relative to each other that they form an operating angle with each other of more than sufficient for moving the armature from the closed position to the open position at an angle to the closed position, and the apex of the operating angle being supported on the edge of the magnet at right angle to the direction of elongation of the armature, which edge among all the edges of the magnet is disposed closest to the operating member.
  • the I armature has a sloping end surface which is inclined relative to the elongated inner surface of the armature for the operating angle, and has an elongated outer surface which is substantially parallel to the inner surface and intercepts the sloping end surface and is shorter than the elongated inner surface, and the operating member is straight and is connected to the sloping surface and forms thus with the inner armature surface the aforesaid operating angle.
  • the armature has an end surface that is flush with the side surface of one of the magnet poles, and the operating member is connected to that end surface but then is bent to form the operating angle.
  • the armature has an end surface, a portion of which near the inner surface of the armature is inclined relative to that inner surface for the aforesaid operating angle, but the remainder of the end surface defines a shoulder that is operable to receive in abutment the end of the operating member.
  • the instant invention offers several advantages, among which are a minimum amount of bearing structure parts, because parts already existing in the magnetic igniter structure are used for bearing purposes; and the arrangement of supporting the apex of the operating angle that is formed between the inner surface of the armature and the interior surface of the operating member on the pole edge, thereby considerably reducing the overall volume of the magnetic igniter, which is particularly advantageous for use in connection with small sized pocket lighters.
  • the instant magnetic igniter is particularly suited for use in connection with lighters and particularly pocket lighters, that is not the only use for the magnetic i'gniter of the instant invention.
  • the instant magnetic igniter is particularly suited for use in connection with lighters and particularly pocket lighters, that is not the only use for the magnetic i'gniter of the instant invention.
  • the operating member may include an operating lever portion that may be formed as a leaf spring; furthermore, the aforesaid supporting edge may be a sharp edge.
  • the aforesaid operating angle should be larger than 90, and generally ranges from about 95 to [15, and may optimally be 98.
  • FIG. 1 is a schematic perspective view showing a magnetic flux circuit of a magnetic igniter in accordance with an embodiment of the instant invention
  • FIG. 2 is a fragmentary perspective view similar to FIG. 1, but embodying a modification
  • FIG. 3 is a fragmentary plan view of a further modification.
  • FIG. 4 is a schematic perspective view showing a conventional magnetic igniter including the magnetic flux circuit of F IG. 1 in its actuated position.
  • a permanent magnet 1 that has a soft iron core 2 and an armature 3.
  • the magnet 1 and core 2 form a U-shaped structure with two poles, and the poles have upper surfaces 4 and 5 arranged in a plane, respectively.
  • the armature in the closed position shown in FIGS. 1-3, 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 fonn a part of the inner surface of the armature 3.
  • An operating member 8 is provided that includes a portion that is connected either directly or indirectly, and hence with relation to the end surface of the armature 3, and a lever portion that in all the views hereof extends in the closed armature position at an angle from the side surface 9 of the magnet 1.
  • the interior surface of the lever portion of the operating member 8 forms an operating angle exceeding 90 with the inner surface of the elongated armature 3.
  • This operating angle must be sufficiently large for moving, when actuated, the armature 3 from the illustrating closed position to an open position in which the armature is disposed at an angle to its closed position and breaks the magnetic flux circuit; in the closed position shown, the armature 3 makes the magnetic flux circuit.
  • the operating angle can be from about 95 to I and may have an optimal value of 98.
  • the end surface 10 of the armature 3 is inclined relative to the elongated inner surface of the armature 3, and the operating member 8 projects from the entire magnet structure at an angle, in FIG. 1.
  • the armature 3 andthe operating member 8, in all three views of the drawing are supported, and hence borne at the apex 12 of the said operating angle on the uppermost edge 13 of the magnet l which edge, among all the edges of the magnet poles I, 2, is closest to the operating member 8.
  • the edge 13 is disposed at right angles to the direction of elongation of the armature 3.
  • the end surface 10 of the armature slopes only for a portion, and for the remainder defines a shoulder 11 that is operable to receive in abutment the end of the operating member 8.
  • the upper portion of the operating member 8 may be connected to an inclined part of the end portion 10 of the armature 3, for example by means of a screw or a rivet.
  • the shoulder 11 will aid in resisting movement of the operating member 8 while it is being connected to the armature 3.
  • the armature 3 has an end surface 10 that is flush with the side surface 9 of the pole of the magnet l.
  • the operating member 10 is bent, and its lever portion extends from the aforesaid edge 13 for an angle, to form between its interior surface and the inner surface of the aperture 3 of the aforesaid operating angle.
  • the operating member 8 may be connected to the armature 3 by means of screw as shown, or by means of a rivet.
  • the operating member 8 either in addition to the attachment by screw or rivet, or without attachment by screw or rivet, may be soldered or brazed to the end surface 10 of the armature 3.
  • the armature 3 is lifted off its closed position (FIG. 4) shown due to a force D (FIG. 1) exerted in the direction shown in FIG. 1 by an arrow, and during the application of the force D, the edge 13 of the magnet pole acts in conjunction with the apex 12 of the operating member 8 and the armature 3 as a knife-edge bearing.
  • a permanent magnetic flux circuit including a perm anent 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 angle of substantially thus defining 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, and
  • 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 said armature an apex abutting against said edge;
  • said lever portion and said inner armature surface forming an operating angle ranging from about 95 to about 1 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.
  • said armature having a sloping end surface inclined relative to said elongated inner surface for said operating angle, and having an elongated outer surface substantially parallel to said inner surface and intersecting said end surface and being shorter than said elongated surface, 'said operating member being substantially straight throughout and connected to said sloping end surface, whereby said operating member will form with said inner armature surface said operating angle,
  • said armature having an end surface substantially flush with outer side surface of said magnet, said operating member being connected to said end surface, said lever portion extending from said apex relative to said inner surface at said operating angle.
  • said armature having an end surface a portion of which near said inner surface being inclined relative to said inner surface for said operating angle, the remaining of said end surface defining a shoulder operable to receive in abutment the end of said operating member.
  • said operating member being formed as a leaf spring.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnets (AREA)
US00220817A 1971-08-24 1972-01-26 Permanent magnetic flux circuit and an actuating member for igniters Expired - Lifetime US3760313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712142294 DE2142294A1 (de) 1971-08-24 1971-08-24 Magnetzunder

Publications (1)

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US3760313A true US3760313A (en) 1973-09-18

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ID=5817594

Family Applications (1)

Application Number Title Priority Date Filing Date
US00220817A Expired - Lifetime US3760313A (en) 1971-08-24 1972-01-26 Permanent magnetic flux circuit and an actuating member for igniters

Country Status (11)

Country Link
US (1) US3760313A (enrdf_load_stackoverflow)
JP (1) JPS4830568A (enrdf_load_stackoverflow)
AT (1) AT309863B (enrdf_load_stackoverflow)
CH (1) CH536983A (enrdf_load_stackoverflow)
DD (1) DD96329A5 (enrdf_load_stackoverflow)
DE (1) DE2142294A1 (enrdf_load_stackoverflow)
ES (1) ES400109A1 (enrdf_load_stackoverflow)
FR (1) FR2150281B1 (enrdf_load_stackoverflow)
IL (1) IL38831A0 (enrdf_load_stackoverflow)
IT (1) IT974588B (enrdf_load_stackoverflow)
NL (1) NL7202449A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020369A (en) * 1974-07-12 1977-04-26 Westinghouse Electric Corporation Compact mechanically-powered electric generator for a camera or other apparatus
US11011958B2 (en) * 2016-10-27 2021-05-18 Harco Semco, Llc Extreme environment variable reluctance energy harvester and method for implementing same

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
US3581155A (en) * 1968-03-21 1971-05-25 Richard Halm Electromagnetic make-and-break ignition device for a pocket lighter
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
US3581155A (en) * 1968-03-21 1971-05-25 Richard Halm Electromagnetic make-and-break ignition device for a pocket lighter
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
US4020369A (en) * 1974-07-12 1977-04-26 Westinghouse Electric Corporation Compact mechanically-powered electric generator for a camera or other apparatus
US11011958B2 (en) * 2016-10-27 2021-05-18 Harco Semco, Llc Extreme environment variable reluctance energy harvester and method for implementing same

Also Published As

Publication number Publication date
IT974588B (it) 1974-07-10
FR2150281A1 (enrdf_load_stackoverflow) 1973-04-06
IL38831A0 (en) 1972-04-27
FR2150281B1 (enrdf_load_stackoverflow) 1974-09-13
CH536983A (de) 1973-05-15
DD96329A5 (enrdf_load_stackoverflow) 1973-03-12
JPS4830568A (enrdf_load_stackoverflow) 1973-04-21
NL7202449A (enrdf_load_stackoverflow) 1973-02-27
DE2142294A1 (de) 1972-09-14
AT309863B (de) 1973-09-10
ES400109A1 (es) 1974-12-16

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