US3364752A - Electro-mechanical actuator - Google Patents

Electro-mechanical actuator Download PDF

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Publication number
US3364752A
US3364752A US501049A US50104965A US3364752A US 3364752 A US3364752 A US 3364752A US 501049 A US501049 A US 501049A US 50104965 A US50104965 A US 50104965A US 3364752 A US3364752 A US 3364752A
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United States
Prior art keywords
cam
plunger
shaft
release
latch
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Expired - Lifetime
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US501049A
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English (en)
Inventor
Hans U Hjermstad
Carl J Kopp
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Electro-Seal Corp
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Electro-Seal Corp
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Publication date
Application filed by Electro-Seal Corp filed Critical Electro-Seal Corp
Priority to US501049A priority Critical patent/US3364752A/en
Priority to GB47004/66A priority patent/GB1108280A/en
Priority to BE688691D priority patent/BE688691A/xx
Application granted granted Critical
Publication of US3364752A publication Critical patent/US3364752A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight
    • B64D1/02—Dropping, ejecting, or releasing articles
    • B64D1/04—Dropping, ejecting, or releasing articles the articles being explosive, e.g. bombs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight
    • B64D1/02—Dropping, ejecting, or releasing articles
    • B64D1/04—Dropping, ejecting, or releasing articles the articles being explosive, e.g. bombs
    • B64D1/06—Bomb releasing; Bomb doors
    • 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
    • Y10T74/11—Tripping mechanism

Definitions

  • An energy-storing and release mechanism usable to actuate bomb shackle release devices and the like, which comprises a housing defining an elongated chamber, a plunger mounted within the chamber and longitudinally movable therein from an energy storing cocked position to a released position, energy-storing means operable to move the plunger from the cocked to the released position, locking means engageable with the plunger to releasably retain the plunger in the cocked position and further having an unlocked position disengaged from the plunger permitting the energy-storing means to move the plunger toward the released position, and planetary cam means operably engageable with said locking means and moveable from a first position in engagement with said locking means to releaseably retain said locking means in said locked position and further movable to a second position permitting said locking means to move to said unlocked position.
  • This invention relates generally to an electro-mechanical energy storing and release mechanism, and more particularly relates to an improved actuator mechanism of the type disclosed in United States Patent 2,776,570 for controlling a bomb shackle release device.
  • the type of bomb release actuator under consideration comprises a spring-loaded plunger assembly which is releasably locked in a cocked energy storing position by cam-operated locking and release means.
  • the cam means which operates the locking and release means is connected to a solenoid assembly or the like which upon energization moves the cam and releases the locking and release means from the plunger, thereby permitting the spring to forcefully drive the plunger assembly against the release lever of an aircraft bomb shackle.
  • This invention contemplates providing such bomb release actuators with an improved locking and release means and a novel planetary cam assembly which cooperate to releasably retain the plunger assembly in the aforementioned cocked energy storing position. It has been found that the addition to such actuators of the improvements in accordance with this invention substantially enhances the structural and operational characteristics of the actuator, and particularly decreases the amount of electrical energy needed to operate the mechanism. In addition, the improvements in accordance with this invention substantially reduce the costs of manufacturing the actuator by providing a mechanism which can be readily machined with a minimum of critical tolerances and which can be finally adjusted for maximum performance during assembly.
  • Another object of this invention is to provide an improved electro-mechanical actuator mechanism which may be economically manufactured with a minimum of critical machine tolerances, and which may be accurately adjusted for maximum performance at the time of assembly.
  • FIGURE 1 is an end view of the assembled actuator mechanism in accordance with this invention.
  • FIGURE 2 is an enlarged cross-sectional view of the actuator taken along the line 22 in FIGURE 1 showing the actuator in the cocked energy-storing position;
  • FIGURE 3 is a cross-sectional view taken along the line 33 in FIGURE 2;
  • FIGURE 4 is a fragmentary cross-sectional view taken along the line 4-4 in FIGURE 2;
  • FIGURE 5 is a fragmentary cross-sectional view taken along the line 55 in FIGURE 2;
  • FIGURE 6 is a fragmentary cross-sectional view taken along the line 66 in FIGURE 2;
  • FIGURE 7 is a fragmentary cross-sectional view taken along the line 7-7 in FIGURE 2;
  • FIGURE 8 is a further enlarged fragmentary crosssectional view taken along the line 8-8 in FIGURE 2;
  • FIGURE 9 is a further enlarged fragmentary sectional in a cocked energy storing position
  • FIGURE is an enlarged and exploded perspective view of the internal portion of the actuator assembly showing the locking and planetary cam release mechanism in accordance with this invention
  • FIGURE 11 is a rearward perspective view of the spider portion of the planetary cam release mechanism shown in FIGURE 10;
  • FIGURE 12 is an enlarged fragmentary sectional view of the actuator as shown in FIGURE 2 illustrated in fired or released position;
  • FIGURE 13 is a fragmentary cross-sectional view taken along the line 13--13 in FIGURE 12;
  • FIGURE 14 is a further enlarged fragmentary sectional view taken along the line I4-14 in FIGURE 12;
  • FIGURE 15 is a further enlarged fragmentary crosssectional view taken along the line 15-15 in FIGURE 12;
  • FIGURE 16 is a further enlarged fragmentary sectional view of the actuator as shown in FIGURE 9, illustrated in the fired or released position.
  • the actuator mecha- .nism in accordance with this invention comprises a body or housing 10 which defines a substantially cylindrical chamber 11.
  • This housing 10 includes a support bracket 12 having bolt holes 13 for securing the assembled actuator in the proper position on a bomb release shackle (not shown).
  • Housing 10 is further provided with a plug 14 and washer 15 which maintain the actuator components, described hereinafter, in proper assembled position within the housing 10, and which seal one end of chamber 11 so that the assembly is not subjected to the moisture and dirt, or severe temperature variations of the surrounding atmosphere.
  • the housing 10, plug 14 and washer 15 are preferably made from a metal having a high magnetic reluctance.
  • This actuator mechanism also includes an electro-magnetic solenoid unit 20 housed at one end of the chamber 11 and a spring-loaded plunger assembly 50 housed at the other end of the chamber.
  • this solenoid unit 20 when energized operates through novel locking and release means 80 and planetary cam assembly 100 to release this spring-loaded plunger assembly 50 and allow the plunger to forcefully impact a bomb shackle release lever.
  • the solenoid unit 20 includes a stator 21 having a central core portion 21' surrounded by the wire energizing coil 23 that is wound about a coil spool 24.
  • the stator 21 is restrained from rotating within the housing 10 by the Set screw 19, and the coil 23 can be connected to a suitable power source (not shown) by lead wires that extend outwardly from the housing through a water-tight fitting 26.
  • This solenoid unit also includes a rotor 35 secured to a shaft 36.
  • This rotor 35 defines four equally-spaced poles 37, 38, 39 and 40, as seen in FIGURES 3, 10 and 13, which are disposed adjacent the above-described pole pieces 27, 28, 29 and respectively of the solenoid stator 21.
  • This rotor shaft 36 extends through stator 21 and tubular portion 22 along substantially the entire length of housing chamber 11, and is supported for rotation in the stator by sleeve bearings 41 and 42.
  • a stop-nut 43 and a thrust ball bearing 44 operate to maintain the shaft 36 in the proper lateral position within the actuator housing 10.
  • This thrust hearing 44 also aids in materially reducing the amount of electrical energy needed to actuate the mechanism in accordance with this invention by substantially reducing the drag on the rotor 35 created by the lateral pull of the solenoid 20 on the rotor when the coil 23 is energized.
  • the rotor 35 is also provided with a stop pin 45 which extends inwardly from the rotor toward the stator 21 and which travels within an arcuate groove 46 provided in the adjacent face of the coil spool 24.
  • the upper limit of the groove 46 thereby provides an abutment shoulder 47 engageable with the pin 45 to define the extreme clockwise or cocked position of the rotor.
  • a torsion spring 34 shown clearly in FIG- URES 3 and 13, is also included in the solenoid unit to urge the rotor 35 clockwise toward this cocked position, and to retain the pin 45 in engagement with the shoulder 47 when the solenoid 20 is not energized.
  • FIGURES 4 and 13 further illustrate that this solenoid unit 20 includes a stop ring 48, formed from soft flux-permeable steel or the like, which is secured to the stator 21 by a suitable retaining clip 49.
  • This stop ring 48 is provided with a tab 48 projecting into the path of counter-clockwise travel of pin 45 on the rotor. The tab 48" is thus engageable with pin 45 to define the extreme counter-clockwise uncocked or released position of the rotor 35, as illustrated in FIG- URE 13.
  • the stop tab 48' and the stop pin 45 are in the magnetic circuit of the solenoid unit 20, the energization of the coil 23 will magnetize the tab and pin, and create a mutual magnetic attraction which draws the pin toward the tab.
  • the tab 48' and pin 45 therefore provide a supplementary magnetic torque force as the pin approaches the tab which assists the rotation of rotor 35 through the final angular degrees where the torque force would otherwise be weakened by the closing of the gaps between the rotor and stator poles of the solenoid assembly.
  • the plunger assembly 50 comprises a hollow cylindrical member which is slidably extended over the tubular portion 22 of the stator core 21 and over the shaft 36 Within housing chamber 11.
  • a striking cap 56 which will engage the release-lever of the bomb shackle release device during operation of the actuator, is threaded to the outer end of member 55 (FIGURES 2 and 12) and a hollow cylindrical skirt 57 is threaded to the periphery of member 55.
  • the member 55, cap 56 and skirt 57 will thereby move longitudinally outward from within chamber 11 as a complete unit, from the position shown in FIGURE 2 to the position shown in FIGURE 12, when the actuator in accordance with this invention is operated to release the bombs from the aircraft.
  • the housing 10 as shown in FIGURES 2 and 12 ineludes an inward circular flange 10' which surrounds the periphery of the skirt 57.
  • a nylon channel-shaped liner 58 held in place against the skirt 57 by a suitable resilient O ring 59 is also provided within the housing 10, to insure that the sliding junction between skirt 57 and the flange 10 is sealed from the atmosphere surrounding the actuator.
  • a split shock ring 60 having beveled edges 61 is positioned adjacent this 0 ring 59, and is engageable with an angular flange 63 on the skirt 57 to limit the outward travel of plunger assembly 50.
  • FIGURE 12 shows that the engagement between this flange 63 and the shock ring will force the ring 60 outwardly to the left against the resilient O ring 59 while simultaneously forcing the ring 60 to radially expand into frictional engagement with the housing 10.
  • the energy storing means used in the type of actuators under consideration comprises a strong compression spring 70 which is substantially fully compressed when the actuator is locked in a cocked position, as illustrated in FIGURES 2 and 9, and which operates when unlocked to bring the plunger assembly 50 into engagement with the release-lever of the bomb shackle device with a substantial impact force.
  • the energy storing compression spring 70 having a compressive force of approximately 30 pounds is mounted around the tubular portion 22 between the stator 21 and the plunger assembly 50, and is operative upon release of the plunger assembly 50 to rapidly force the plunger outwardly until the motion is arrested by the engagement of flange 63 with the shock ring 60, as described hereinabove.
  • a key 75 secured to the tubular portion 22 of the stator 21 is in engagement with a longitudinal keyway 76 provided in the interior surface of hollow member 55, and guides the outward movement of plunger assembly 50 during the bomb-releasing operation.
  • the bomb release actuator mechanism in accordance with this invention further includes an improved locking and release latch 80, as seen in FIGURES 9 and 10, to releasably retain the plunger assembly 50 in a cocked energy storing position.
  • Latch 80 is pivotally mounted adjacent the plunger assembly 50 on pins 81 within a longitudinal groove 79 in the tubular portion 22 of the stator core.
  • the latch 80 further includes a detent 82 which is engageable with an interior surface 83 of the plunger assembly 50. As shown in FIGURES 2 and 9, when this latch 80 is pivoted about pins 81 to a locked position, the detent surface 82 engages with the interior surface 83.
  • the plunger assembly 50 is thereby retained in a cocked position within the housing 10 and the energy of the compressed spring 70 is stored.
  • FIGURES l2 and 16 illustrate that this locking latch 80 in accordance with this invention also pivots about the pins 81 into an unlocked position to disengage the detent 82 from the interior surface 83 of the plunger assembly and thereby release the stored energy of the compressed spring 70.
  • spring 70 will then forceably drive the plunger assembly 50 outwardly against the release-lever of the bomb shackle.
  • the latch 80 in this illustrated embodiment is pivoted within the actuator housing 10 so that the compression spring 70 urges the latch toward this unlocked position.
  • the pivot pins 81 of the latch are thus secured to the actuator assembly in a position spaced from the detent 82 so that a moment arm is defined between the pins and the detent.
  • the lateral releasing force of the compressed spring 70, applied to the latch 80 through the detent 82, thereby creates a moment force which tends to rotate the latch to the above-described unlocked position.
  • the bomb release mechanism in accordance with this invention further includes an improved planetary cam assembly 100 which is mounted on rotor shaft 36, and which cooperates with the latch 80 to releasably retain the latch in a locked position against the biasing force of spring 70.
  • the planetary cam assembly 100 comprises a cam sleeve 10'1 defining an arcuate cam surface 102 on its periphery, and a plurality of rolling cams 110, 111, 112 and 113.
  • this 6 planetary cam assembly in this embodiment is dimensioned for placement within a raceway defined between the interior of tubular portion 22 and the cam surface 102 of the cam sleeve 101.
  • this planetary cam means 100 is mounted on the shaft 36 'with the cam sleeve 101 spaced adjacent the latch and positioned so that the planetary rolling cam is movable between the latch and cam sleeve along the cam surface 102 defined by the sleeve (FIGURES 9 and 16). Axial movement of the cam assembly 100 along shaft 36 is prevented by the adjustable nut 130 and washer 131 on the left, as viewed in FIGURE 9, and by the cam nut on the right of the cam assembly.
  • cam nut 120 is secured to shaft 36 by a suitable set screw 121, and may be finally adjusted during the assembly of the actuator mechanism in accordance with this invention by inserting the proper adjustment tool through the apertures provided in the tubular portion 22 of the stator.
  • the positioning of the planetary cam means 100 by means of adjustable nut and the adjustable cam nut 120 in accordance with this invention thereby allows final adjustment of the relative positioning of the locking latch 80 and cam means 100 at the time of assembly, and eliminates the need for providing the bomb release mechanism with expensive parts machined to close tolerances.
  • cam means 100 The mounting of cam means 100 on shaft 36 in the above-described manner permits the planetary rolling cam 110 to be moved into a position to either lock or release the latch 80.
  • this first locking position of rolling cam 110 as seen in FIGURE 7, the engagement of cam 110 between latch 80 and cam sleeve 101 counteracts the above-described biasing force of spring 70 which tends to rotate the latch to its unlocked position, and releasably retains the latch locked against the plunger assembly 50.
  • the underside of latch 80 preferably includes a recess 84 which assists in retaining the rolling cam 110 in this first position.
  • FIGURE 15 further illustrates the movement of rolling cam 110 along the cam sleeve 101 to a second unlocked position removed from engagement between latch 80 and the cam sleeve.
  • the biasing force of the compressed spring 70 will quickly force the latch 80 toward the unlocked position shown in FIGURE '16 and thereby release the plunger assembly 50.
  • Latch 80 is preferably provided with a bevelled edge portion 85, shown in FIGURES 7 and 15, which engages rolling cam 110 and facilitates the movement of the cam between the above-described first and second positions.
  • rolling cam 110 from the first position to the second position to release the latch 80 from the plunger 50 is selectively controlled by the rotation of the rotor shaft 36 induced by the energization of the solenoid 20.
  • Projecting tongues 122 on cam nut 20 operably engage with corresponding grooves 117 in the cam spider 115 and transmit the rotation of shaft 36 to the rolling cams 110, 111, 112, and 113, as seen in FIGURES 10 and 11.
  • FIGURE 6 illustrates the engagement of tongues 122 in the grooves 117 with the bomb release actuator in a cocked energy storing position
  • FIGURE 14 illustrates the position of tongues 122 within the grooves after the actuator has been released or fired.
  • FIGURES 6 and 14 further show that the arcuate width of the grooves 117 in the spider 115 is substantially larger than the width of the corresponding tongues 122 so that the rotation of shaft 36 causes the tongues 122 to pre-travel through a predetermined are before engaging with the spider 115 and actuating the release of the latch 80.
  • This pre-travel feature of this embodiment of the invention in which the tongues 122 pre-travel through approximately fifteen degrees, provides a lost-motion connection between the cam assembly 100 and the shaft 36 which permits the shaft to develop a substantial amount of angular momentum before impacting the cam means 100 and assures a positive and quick release of the plunger assembly 50, as further described hereinafter.
  • the degree of angular rotation of the cam spider 115 and the limit of travel of the rolling cam 110 in the cocked position is controlled by the engagement of a stop pin 86, extending from the latch 80, within groove 118 (FIGURE 10) provided in the periphery of the spider 115.
  • the bomb release actuator mechanism in accordance with this invention is initially retained in a cocked energy storing position, as illustrated in FIG- URES 2 and 9, with the plunger assembly 50 releasa-bly locked by the latch 80.
  • the solenoid is deenergized, and the force of torsion spring 34 retains the rotor 35 in the position shown in FIGURE 3, with the stop pin 45 engaged against the shoulder 47.
  • the pole pieces 37, 38, 39 and 40 of the rotor 35 are thus initially maintained in a spaced or gapped position with respect to the corresponding pole pieces 27, 28, 29 and 30 of the stator 21. This securing of the rotor also prevents the rotation of rotor shaft 36 and cam nut 120.
  • the cam nut 120 is adjusted to position the spider 115 of cam means 100 so that the rolling cam 10 is retained in the locking position engaged with latch 80, as shown in FIGURE 7, when the rotor 35 is in the above-described starting position.
  • the proper initial positioning of spider 115 brings the spider into engagement with the pin 86 extending from the latch 80 into the spider groove 118, as shown in FIG- URE 6.
  • FIGURE 6 illustrates that the cam nut 120 is adjusted on shaft 36 so that the tongues 122 on the cam nut initially engage the spider 115 in an extreme clockwise position within grooves 117.
  • a low amperage energizing current is supplied to the coil 23 of solenoid 20 through the lead wires 25.
  • This energization of solenoid 20 rotates the shaft 36 and cam nut 120 counter-clockwise by attracting the rotor poles 37, 38, 39 and 40 toward the stator poles 27, 28, 29 and 30 respectively with a magnetic force sufficient to overcome the clockwise biasing force of the torsion spring 34.
  • the rotation of the rotor and shaft is arrested by engagement between the stop pin and the tab 48, as illustrated in FIGURE 13.
  • the cam nut 120 will pretravel through an arc of approximately 15 degrees, and together with the rotor 35 will thus develop substantial angular momentum, before the tongues 122 on the cam nut impact against the counter-clockwise edge of the grooves 117 (FIGURE 14) and transfer the rotation of shaft 36 to the cam spider 115. The continued rotation of shaft 36 will then cause the spider 115 to force the rolling cam 110 from the locked position as shown in FIGURE 7 to a second or unlocked position, illustrated in FIGURE 15.
  • the force of compressed spring 70 which urges the latch 80 downward as viewed in FIG- URE 15, will assist in moving rolling cam 110 to this second position by the engagement of the cam with the bevelled surface 85, and Will then quickly move the latch downward to its unlocked position disengaged from the plunger assembly 50. It is apparent from the above description that the movement of latch 80 to the unlocked position thereby releases the plunger assembly 50 from a cocked position, and permits the plunger to be driven outwardly from housing 10 into impact with a bomb shackle release-lever by the expansion of the compression spring 70. It is further apparent from the above descrip tion that the actuator in accordance with this invention requires less electrical energy to release, since the rolling contact between the rolling cam 110 and the latch 80 minimizes the frictional resistance of the assembly.
  • the plunger assembly 50 is forced inwardly, by any suitable means, until the spring 70 is compressed and the interior surface 83 on the plunger clears the detent 82 on the latch 8i
  • the torsion spring 34 shown in FIGURE 13, will then rotate the shaft 36 and the interconnected rolling cam 11% clockwise, and cause the rolling cam to force the latch 85 up into the locked position against the plunger assembly.
  • the actuator assembly in accordance with this invention is thus placed in an energy-storing condition, and may be released by selectively repeating the energization of the coil 20.
  • An energy storing and release mechanism comprising:
  • a housing defining an elongated chamber
  • a plunger mounted within said chamber and longitudinally movable therein from an energy storing cocked position to a released position
  • locking means supported within said housing adjacent said plunger, said locking means having a locked position in engagement with said plunger to releasably retain said plunger in said cocked position and further having an unlocked position disengaged from said plunger permitting said energy-storing means to move said plunger toward said released position,
  • planetary cam means positioned on said shaft and operable to releasably retain said locking means in said locked position
  • said cam means comprising a cam sleeve mounted on said shaft and defining an arcuate cam surface spaced adjacent said locking means and further comprising a planetary rolling cam engaged with said cam surface and movable thereon to a first position engageable between said cam surface and said locking means to releasably retain said locking means in said locked position, said planetary rolling cam being further movable on said cam surface to a second position permitting said locking means to move to said unlocked position
  • connecting means joining said planetary cam means to said shaft and operable to move said planetary rolling earn from said first position to said second position in response to rotation of said shaft and thereby permit said locking means to move to said unlocked position and release said plunger.
  • An energy storing and release mechanism according to claim 1 where-in said means to selectively rotate said shaft comprises a solenoid supported in said housing adjacent said shaft and wherein said solenoid includes a rotor joined to said shaft and operative to rotate said shaft u-pon energization of said solenoid.
  • An energy storing and release mechanism comprising:
  • a housing defining an elongated chamber
  • a hollow plunger mounted within said chamber and longitudinally movable therein from an energy storing cocked position to a released position
  • locking means movably supported adjacent the interior of said hollow plunger, said locking means having a locked position in engagement with an interior surface on said plunger to releasably retain said plunger in said cocked position and further having an unlocked position disengaged from said plunger permitting said biasing means to move said plunger toward said released position,
  • planetary cam means positioned on said shaft within said hollow plunger and operable to releasably retain said locking means in said locked position
  • said cam means comprising a cam sleeve mounted on said shaft and defining an arcuate cam surface spaced adjacent said locking means and further comprising a planetary rolling cam engageable with said cam surface and movable thereon to a first position engaged between said cam surface and said locking means to releasably retain said locking means in said locked position engaged with said plunger, said planetary rolling cam being further movable on said cam surface to a second position permitting said locking means to move to said unlocked position
  • connecting means joining said planetary cam means to said shaft and operable to move said rolling cam from said first position to said second position in response to rotation of said shaft and thereby permit said locking means to move to said unlocked position and release said plunger.
  • said connecting means comprises a cam nut fixed to said shaft and a cam spider movably mounted about said shaft in engagement with said rolling cam and wherein said cam nut and spider are connected by a tongue and groove connection so that said spider transmits the rotation of said cam nut to said rolling cam.
  • said locking means comprises a latch pivotally mounted within said chamber and extending within said hollow plunger, said latch including a detent engageable with said plunger to releasably retain said plunger in said cocked position and further in cluding a surface engageable with said rolling cam so that said rolling cam movably retains said detent of said latch in engagement with said plunger.
  • said means to selectively rotate said shaft comprises a solenoid supported in said housing about said shaft and wherein said solenoid includes a rotor joined to said shaft and operative to rotate said shaft through a predetermined angle upon energization of said solenoid.
  • An energy storing and release mechanism compris- 1n a housing defining an elongated chamber
  • a plunger mounted within said chamber and longitudinally movable therein from an energy storing cocked position to a released position
  • locking means supported within said housing adjacent said plunger, said locking means having a locked position in engagement with said plunger to releasably retain said plunger in said cocked position and further having an unlocked position disengaged from said plunger permitting said energy-storing means to move said plunger toward said released position,
  • cam means cooperating with said locking means comprising a cam surface spaced adjacent said locking means and a rolling cam movable on said cam surface into a first position engaged between said cam surface and said locking means to releasably retain said locking means in said locked position, said rolling cam further movable on said cam surface to a second position permitting said locking means to move to said unlocked position, and
  • a solenoid supported in said housing adjacent said plunger including a rotor joined to said cam means, said rotor being operative upon energization of said solenoid to move said rolling cam from said first position toward said second position over said cam surface so that said cam means unlocks said locking means and permits said energy-storing means to forceably drive said plunger to said released position.
  • An energy-storing and release mechanism comprising:
  • a housing defining an elongated chamber
  • a plunger mounted with-in said chamber and longitudinally movable therein from an energy storing cocked position to a released position
  • locking means supported within said housing adjacent said plunger, said locking means having a locked position in engagement with said plunger to releasably retain said plunger in said cocked position and further having an unlocked position disengaged from said plunger permitting said energy-storing means to move said plunger toward said released position,
  • connecting means joining said planetary cam means to said shaft and operable to move said cam means from said first position to said second position in response to rotation of said shaft and thereby permit said locking means to move to said unlocked position and release said plunger.
  • said locking means includes a recess engageable with said cam means to resist movement of said cam means from said first position, and wherein said locking means further includes a bevel adjacent said recess to urge said cam means toward said second position as said cam means disengages from said recess.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US501049A 1965-10-22 1965-10-22 Electro-mechanical actuator Expired - Lifetime US3364752A (en)

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Application Number Priority Date Filing Date Title
US501049A US3364752A (en) 1965-10-22 1965-10-22 Electro-mechanical actuator
GB47004/66A GB1108280A (en) 1965-10-22 1966-10-20 Energy storing and release mechanism
BE688691D BE688691A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1965-10-22 1966-10-21

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US501049A US3364752A (en) 1965-10-22 1965-10-22 Electro-mechanical actuator

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US3364752A true US3364752A (en) 1968-01-23

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BE (1) BE688691A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1108280A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470750A (en) * 1967-04-28 1969-10-07 Sachsenwerk Licht & Kraft Ag Switch actuating mechanism
GB2139023A (en) * 1983-04-26 1984-10-31 Ctm Co Inc Electromechanical actuator
US4891994A (en) * 1989-02-13 1990-01-09 Plessey Incorporated Linear electromechanical actuator
CN109960359A (zh) * 2017-12-26 2019-07-02 联想企业解决方案(新加坡)有限公司 紧固设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510445A (en) * 1924-02-14 1924-09-30 William H Avery Ball-lock release and spring-actuating mechanism
US2535095A (en) * 1948-07-23 1950-12-26 Daniel E Schwartz Bomb shackle release

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510445A (en) * 1924-02-14 1924-09-30 William H Avery Ball-lock release and spring-actuating mechanism
US2535095A (en) * 1948-07-23 1950-12-26 Daniel E Schwartz Bomb shackle release

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470750A (en) * 1967-04-28 1969-10-07 Sachsenwerk Licht & Kraft Ag Switch actuating mechanism
GB2139023A (en) * 1983-04-26 1984-10-31 Ctm Co Inc Electromechanical actuator
US4557177A (en) * 1983-04-26 1985-12-10 C.T.M. Company, Inc. Electromechanical actuator
US4891994A (en) * 1989-02-13 1990-01-09 Plessey Incorporated Linear electromechanical actuator
CN109960359A (zh) * 2017-12-26 2019-07-02 联想企业解决方案(新加坡)有限公司 紧固设备
CN109960359B (zh) * 2017-12-26 2024-02-02 联想企业解决方案(新加坡)有限公司 紧固设备

Also Published As

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BE688691A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-03-31
GB1108280A (en) 1968-04-03

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