US3792391A - Electrically operated two position electromechanical mechanism - Google Patents

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Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
  • E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
  • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
  • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
  • E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
  • E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T292/00—Closure fasteners
  • Y10T292/08—Bolts
  • Y10T292/096—Sliding
  • Y10T292/1014—Operating means
  • Y10T292/1021—Motor
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/15—Intermittent grip type mechanical movement
  • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion

Definitions

• a direct current voltage is transmitted from a control station via communication lines to a plurality of remote stations wherein it is desired to control the movement of a mechanical device, switch, or electrical component.
• the direct current voltage is accumulated in a storage circuit and then applied momentarily to the electrical component.
• the system is particularly described in conjunction with a solenoid operated door lock.
• a switch activated by the position of the door controls a signal generator in repetition rate.
• the indicative signals are returned via same telephone lines to the control station.
• Prior art door locks of the solenoid and the electric strike type achieve the lock or unlock position by either energizing or de-energizing a coil or solenoid.
• a few utilize two coils or solenoids one to unlock, the other to lock.
• the coil or solenoid must be designed for continuous duty. This generally means the use of more copper, better insulation and provision'for heat dissipation.
• the use of two coils or solenoids duplicates that expense and that of wiring and control circuits. None of the prior art solenoid type locks are suitable for use without local power and most are not sufficiently rugged or secure that they cannot be tampered or moved by hand.
• the electric bolt of the preferred embodiment basically comprises a solenoid and a core operable in a single snap direction in response to the solenoid being momentarily energized.
• the bolt attached to the core is retained in a first position by a spring.
• the core and bolt are retracted by the coils magnetic field overcoming the spring tension.
• Apparatus fixedly positions the bolt and retains the bolt in its retracted position.
• kinetic storage means releases the fixed position of the bolt to permit the spring to return the bolt to its extended position.
• Circuitry is provided to energize the coil with power substantially greater than that normally transmitted via communication wires. In this way the lock is a two step function for alternatively locking and unlocking in a snap action upon momentary energization of the coil.
• the lock finds particular utility in a system for locking and unlocking a heavy or large type of enclosure at a local station in response to a control signal from a control station transmitted via the communication lines.
• Another object of the invention is to provide an electrical solenoid lock alternatively responsive to an electrical signal of only a momentary duration.
• Another object of the invention is to provide an electrical solenoid lock having a positive snap action.
• Another object of the invention is to provide an electrical bolt type lock having a minimum number of components operable together in a rugged and reliable manner.
• Still another object is to provide a remotely operable lock having a simplified storage and control circuit, not necessarily requiring a metallic connection to the remote control center and not requiring local power.
• FIG. 1 and 1A of the drawing showing in cross section the solenoid lock with the improvements of the present invention in a preferred embodiment
• FIG. 2 illustrating schematically the simplified structure of the solenoid lock of the present invention.
• bolt 28 is slidably moveable in the opening 30 in the housing 10.
• the bolt 28 has a part 28a that is urged to protrude from the opening 30 by the action of spring 54.
• the bolt 28 protruding from the opening 30 is the bolt that would enter its female counter part in a door or enclosure for securmg.
• the housing 10 is best illustrated in the expanded view of FIG. 2.
• the housing 10 which actually is a support member is shown in its upright position. In this position the lock would be adapted to bolt close an enclosure from its underside, although it can be used in any position.
• the housing 10 has in its main back side portion 12 several apertures 10a, 10b, 10c, and 10d for securing the structure in position.
• a pair A pair of right angle arms I4 and 16 also have a pair of apertures 14a and 16a aligned to receive and fixedly position the solenoid casing 20. That is, solenoid casing has an upper portion with a pair of ears 22 and 24 also having apertures 22a and 24a.
• the center-to-center distance between the apertures 22a and 24a is identical the distance between the apertures 14a and 16a. In this way the solenoid housing 20 is fixedly positioned onto the structure 12 as shown in FIGS. 1 and 1A.
• the solenoid and bolt are of a substantial size and large amount of power is needed to maintain energization of the coil. Also in the locked position to tamper with the lock it is necessary only to overcome the forces of the spring.
• the bolt position is obtained by a burst or momentary application of power; and the position is maintained by a mechanical locking arrangement. This reduces the power requirements considerably and makes the lock operable from a low power source as described inmy co-pending application, supra, and allows the use of a larger spring substantially eliminating tampering.
• the preferred embodiment of the present invention is shown in part-per-part in FIG. 2 and in an unlocked position in FIG. 1 and locked position in FIG. 1A.
• the solenoid in the present invention is operable from a momentary application of power. More specifically the power applied to the coil of the solenoid is in the nature of a pulse. Continuous power is not applied in either position. A pulse is applied to activate the solenoid to retract the bolt and a pulse is applied to again activate the solenoid to release the bolt.
• link 50 has a lower aperture 38 adapted to slidably receive pin 36.
• a second aperture 39 has pressed fitted therein pin 42.
• the other end of pin 36 is pressed-fitted into aperture 37 in the bolt 28.
• This pin also serves to connect the bolt to the solenoid core.
• the other end of pin 42 is positioned in the elongated groove 32. This groove is formed in the upright portion 12 of the structure 10.
• lts width is somewhat greater than the diameter of the pin 42 to permit sliding therein without disengagement.
• the groove at its lower most end has a flat" 34 formed therein to permit the pin 42 to be seated and retained therein. This flat is perpendicular to bolt 28.
• the lock (bolt 28) in its open (retracted) position has pin 42 seated in the flat 34.
• the pin 42 In the closed (extended) position of the lock (bolt 28) the pin 42 is positioned in the upper region of the slot 32. Also in the extended position the forward travel of the core is stopped by the contact of solenoid coil plate 56 and the housing at 70.
• a bar type of spring 46 having an arc portion 44, shown in FIG. 2, is positioned on the upright portion of the structure 10 adjacent to the link 50. That is, cross pin 40 in link contacts the arc portion 44 of spring 46.
• a pulse applied actuates the solenoid which in turn retracts the bolt 28.
• the bolt 28 is retracted link 50 assumes an upright position as shown in FIGS. 1 and 2.
• the pin 6 positioned in aperture 38 forces the lower end downward.
• the pin 42 is forced into the flat end 34 of the elongated groove 32.
• the power applied is only momentary, the bolt 28 will stay retracted since it is locked into position by the pin 42 in the end 34 of the groove 32.
• Pin 40 is moveably mounted in link 50 and is retained on one end by head 64 which also serves to contact the arc portion 44 of spring 46. Pin 40 is retained on the opposite end by pin 61 press fitted into aperture 60.
• a small spring 62 urges pin 40 to the left.
• Spring 54 opposes retraction and immediately following complete retraction reverses the direction of bolt movement and causes link 50 to move slightly upward to cause pin 42 to contact end 34 of groove 32.
• the bolt 28 is now held in the retracted position by the force of spring 54 causing contact between pin 42 and end 34 of groove 32.
• the spring 54 is fixed at its lower end to the casing 20 and at its upper end to plate 56 fixed to a movable portion of the solenoid.
• Microswitch 49 contacts movable solenoid core plate 56 to detect and transmit locked or unlocked position, as described in my co-pending patent applications, supra.
• An electrically operated two position electromechanical mechanism including a solenoid having a core therein and a spring for urging said core outwardly, the
• a means for applying a first electrical power pulse to said solenoid to retract said core and structure moveably connected to said core to retain said core in its retracted position upon removal of said pulse; kinetic energy storage means also connected to said structure means, means of applying a second'powe'r pulse to said solenoid to thereby release said kinetic energy and thereby release said core from said retained position, and whereby said spring tension returns said core to its outwardly position.

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• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Electromagnets (AREA)

Abstract

Description

Claims (6)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23227366

Family Applications (1)

Country Status (1)

Cited By (58)

Citations (4)

• 1972
  • 1972-12-18 US US3792391D patent/US3792391A/en not_active Expired - Lifetime

Patent Citations (4)

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