CA2005906C - Strike with rectilinearly movable keeper - Google Patents
Strike with rectilinearly movable keeperInfo
- Publication number
- CA2005906C CA2005906C CA 2005906 CA2005906A CA2005906C CA 2005906 C CA2005906 C CA 2005906C CA 2005906 CA2005906 CA 2005906 CA 2005906 A CA2005906 A CA 2005906A CA 2005906 C CA2005906 C CA 2005906C
- Authority
- CA
- Canada
- Prior art keywords
- locking member
- keeper
- housing
- movement
- strike
- 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
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
- E05B47/0046—Electric or magnetic means in the striker or on the frame; Operating or controlling the striker plate
- E05B47/0047—Striker rotating about an axis parallel to the wing edge
-
- 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
- E05B2047/0072—Operation
- E05B2047/0073—Current to unlock only
-
- 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
- E05B2047/0072—Operation
- E05B2047/0076—Current to lock only, i.e. "fail-safe"
Landscapes
- Lock And Its Accessories (AREA)
- Magnetic Treatment Devices (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
- Pinball Game Machines (AREA)
Abstract
An electrically operable strike with a pivotable keeper and a rectilinearly slidable locking member with arms which in one position of the locking member prevent pivoting of the keeper and which in a second, different position of the locking member, permit the keeper to pivot. The locking member has a magnetic portion and is moved from one position to the other by the magnetic field of a pair of electrically energizable coils. By selection of the spacing of the arms, the strike can be either normally locking or normally unlocking. Two locking members can be used to convert the strike from normally locking to normally unlocking or one locking member with adjustable or removable arms can be used for such conversion.
Description
~0(~90~
STRIRE WIT8 RECTILINEARLY MOVABLE REEPER ~OCRING MEM8ER
BACRGROUND OF T8E lNv~.,ION
The invention relates to a strike used to prevent the opening of an associated acce~s obstructing member, such as a door.
Electrically operable strikes are well known in the art, and for example, they are used frequently in connection with the main access door of an apartment building to prevent entry into the building until a solenoid associated with the strike is electrically energized to permit pivoting of the strike keeper.
See, for example, U.S. Patents Nos. 4,471,983; 3,638,984 and 3,749,435. Normally, the solenoid is energized by means of a circuit completing switch remote from the strike.
It is also known in the art to prevent release of the latch or keeper of the strike and opening of the door by electrically energizing the solenoid. However, usually there are substantial differences between the components of a strike which will release the keeper with energization of the solenoid and the components of a strike which will lock the keeper with energization of the ~olenoid.
In addition, the known strikes usually require several components, such as pivotable levers, etc. which increases the assembly problems and the likelihood of malfunctioning because of misalignment, binding or corrosion. Also, if opening force is being applied to the door, the solenoid generally will be unable to cause release of the keeper and/or the components may be unable to prevent opening of the door if a sufficient opening force is applied to the door due to breaking or bending of the locking components.
In general, prior art strikes comprise a single solenoid which has a winding of a conductor which, when electrically 9~
energized, actuates a centrally disposed armature which has a locking member connected thereto and biassed by a spring 80 that the keeper prevents pivoting of the locking member unless the solenoid is electrically energized. To keep the energizing current low, the biassing spring usually has a force which is onlv slightly more than the force required to return the locking member and the armature to their locking or unlocking positions.
Such spring return force may, at times, such as with misalignment of parts, accumulation of foreign matter, etc., be insufficient to return them to their unlocking or locking positions.
It is also known in the art to use an air actuated piston and cylinder assembly with the piston connected to the locking member to actuate the locking member.
OBJECTS OF l~E INV~N'~ ION
One object of the invention i8 to provide a strike of simplified construction.
Another object of the invention is to provide a strike which, by simple replacement of the locking device or simple modification of a single locking member, permits the strike to be changed from locking of the keeper with energization of the actuating means to unlocking of the keeper with energization of the actuating means.
Another object of the invention is to provide a strike construction which requires a force to break the locking member which is greater than the force required to break prior art locking mechanisms.
Another object of the invention is to provide a strike construction in which the locking member can be moved by the actuating means even if substantial force is applied to the keeper.
A further object of the invention i8 to provide a strike with an electromagnet and improved magnetic circuit for the 2(~0~906 '~
electromagnet 80 that the locking member operating force for a given amount of electrical current i~ greater than in prior art strikes.
Other objects of the invention are to make assembly of the strike less critical and to provide a strike which operates equally as well in any orientation.
BRIEF SUMMARY OF THE INV~N'~ ION
The objects of the invention are attained in the preferred embodiment of the invention by pivotally mounting a keeper on a housing, such keeper having a pair of arms or lugs e~tending in planes perpendicular to the pivot a~is, and by slidably mounting a locking member of magnetic material and having arms engageable with or spaced from the lugs on the keeper depending on the position of the locking member. The keeper is urged into its locking position by a spring, and the locking member is urged into the desired position, locking or unlocking, by a spring.
The locking member bears against the housing so that any force applied thereto by the keeper is transmitted to a wall of the housing. A pair of electromagnet coils in the housing attract the locking member, causing it to move rectilinearly, when the coils are electrically energized.
In one embodiment of the invention, two locking members, one having said arms differently positioned from the arms of the other, are provided so that by the mere substitution of one locking member for the other, the keeper is normally locked or is free to pivot until the electromagnetic coils are energized.
In another embodiment of the invention, the locking member has four arms, two of which can be removed to cause it normally to lock or permit pivoting of the keeper until the coils are energized.
In 8 further embodiment of the invention, the arms of the locking member are ad~ustably mounted on the locking member 80 ~ , 20n,,~-~G6 . "~
that by ad~ustlng the posltlons of the arms, the keeper ls normally locked or free to plvot.
Accordlng to a broad aspect of the lnventlon there ls provlded a strlke comprlslng.
a houslng wlth a plurallty of walls;
a keeper mounted on sald houslng for movement from a flrst posltlon to a second posltlon for respectlvely engaglng a latch and movlng away from the latch, sald keeper havlng at least one lug extendlng therefrom toward a wall of sald houslng and movable along a predetermlned path ln a plane wlth movement of sald keeper;
a locklng member slldably mounted on sald houslng lntermedlate sald keeper and sald wall of sald houslng and movable rectlllnearly ln the directlon transverse to sald plane and sald predetermlned path of movement of sald lug, sald locklng member havlng at least one arm thereon extendlng toward sald lug, transversely of and away from sald wall and transversely to the dlrectlon of slldlng movement of sald locklng member, sald arm belng engageable wlth sald lug ln one posltlon of sald locklng member relatlve to sald keeper for preventlng movement of sald keeper and sald arm belng out of the path of movement of sald lug when sald locklng member ls ln another posltlon relatlve to sald keeper;
blasslng means actlng between sald locklng member and said houslng and urglng sald locklng member lnto one of the relative posltlons thereof~ and locklng member actuatlng mearls for movlng sald locklng member from the last-mentloned sald one relatlve sald posltlon thereof lnto the other relatlve pos~tlon thereof. '-Accordlng to another broad aspect of the lnventlon there ls provlded a strlke comprlslng:
a houslng;
~ 'J 0 5 ~
a keeper plvotally mounted on sald houslng for plvotal movement around an axls from a flrst posltlon to a second posltion for respectlvely engaglng a latch and movlng away from the latch, sald keeper havlng two lugs extendlng therefrom transversely to sald axls and spaced from each other in the dlrectlon of sald axls by a predetermlned dlstance7 a locklng member mounted on sald houslng for rectlllnear slidlng movement ln the dlrectlon substantlally parallel to sald axls, sald locklng member havlng two arms thereon, each arm extendlng, respectlvely, toward one of sald lugs and belng engageable wlth the respectlve one of sald lugs ln one posltlon of sald locklng member relatlve to sald keeper for preventlng movement of sald keeper and belng out of the paths of movement of sald lugs when sald locklng member ls ln another posltlon relatlve to sald keeper, and one of sald arms belng spaced from t the other of sald arms by sald predetermlned dlstance~
blasslng means actlng between sald locklng member and sald houslng and urglng sald locklng member lnto one of the relatlve posltlons thereof1 and locklng member actuatlng means for movlng sald locklng member from the last mentloned sald one relatlve sald po~ltlon thereof lnto the other relatlve pO8 ltlon thereof.
Accordlng to another broad aspect of the lnventlon there ls provlded a strlke comprlslng:
a houslng, sald houslng havlng a front wall, a rear wall spaced from sald front wall and a top wall extendlng from sald front wall to sald rear wall~
a keeper plvotally mounted at sald front wall for plvotal movement around an axls substantlally parallel to sald rear wall for movement from a flrst posltlon to a second posltlon for respectlvely engaglng a latch and movlng away from the latch, said keeper havlng two lugs thereon extendlng therefrom 4a '~ '~' 5 5 ~b ~
toward sald rear wall but termlnatlng ln spaced relatlon to sald rear wall, sald lugs belng spaced from each other ln the dlrectlon of sald axls by a predetermlned dlstance;
a locklng member mounted ln sald houslng for rectlllr-ar slldlng movement substantlally parallel to sald axls, sald locklng member belng mounted lntermedlate sald front wall and sald rear wall and slldably abuttlng sald rear wall, sald locklng member havlng two arms spaced from each other by sald predetermlned dlstance and extendlng, respectlvely, toward one of sald lugs, sald locklng member belng slldable between one posltlon and another posltlon, sald arms belng engageable wlth sald lugs ln one posltlon of sald locklng member to prevent plvotlng of sald keeper and belng out of the paths of movement of sald lugs wlth plvotlng of sald keeper ln the other posltlon of sald locklng member to permlt plvotlng of sald keeper;
blasslng means actlng between sald locklng member and'sald houslng for urglng sald locklng member lnto a posltlon flxed ln relatlon to sald top wallS and locklng member actuatlng means mounted at the slde of sald locklng member opposlte from sald top wall for pulllng sald locklng member from sald posltlon thereof whlch ls flxed ln relatlon to sald top wall toward sald locklng member actuatlng means upon energlzatlon thereof.
Accordlng to another broad aspect of the lnventlon there ls provlded a strlke comprlslng~
a houslng wlth a plurallty of walls;
a keeper mounted on sald houslng for movement from a flrst positlon to a second posltlon for respectlvely engaglng a latch and movlng away from the latch, sald keeper havlng at least one lug extendlng therefrom toward a wall of sald houslng and movable along a predetermlned path ln a plane wlth movement of sald keeper~
4b , ~
2 ,(~ JO~
~_ 67487-389 ~ -a locklng member slldably mounted on sald houslng lntermedlate sald keeper and sald wall of sald houslng and movable rectlllnearly ln the dlrectlon transverse to sald plane and sald predetermlned path of movement of sald lug, said locklng member havlng means thereon extendlng transversely to sald predetermlned path of movement of sald lug, sald means belng engageable wlth sald lug ln one posltlon of sald locklng member relatlve to sald keeper for preventlng movement of sald keeper and sald means belng out of the path of movement of sald lug when sald locklng member ls ln another posltlon relatlve to sald keeper to permlt movement of sald keepert blasalng means actlng between sald locklng member and sald houslng and urglng sald locklng member lnto one of the rel tlve posltlons thereof~ and locklng member actuatlng means for movlng sald locklng member from the last-mentloned sald one relatlve sald posltlon thereof lnto the other relatlve posltlon thereof.
~RIBF DI~S~l~llON OF THF DRAWINGS
Other ob~ects and advantages of the present lnventlon wlll be apparent from the followlng detalled descrlptlon of the presently preferred embodlments thereof, whlch descrlptlon should be consldered ln con~unctlon wlth the accompanylng drawlngs ln whlch~
Flgure l ls a perspectlve vlew of an embodlment of the electrlcally operable strlke mounted on a door frame an~ a portlon of a door controlled thereby7 Flgures 2 and 3 are, respectlvely, front and slde elevatlon vlews of the strlke shown ln Flgure 1, the strlke cover belng omltted ln Flgure 3~ -~
Flgures 4 and 5 are, respectlvely, partly exploded and exploded perspectlve vlews of the strlke shown ln Flgure 1, the strlke cover belng omltted ln Flgure 57 4c 2~05~a~
~- 67487-389 . --Flgures 6 and 8 are cross-sectlonal plsn vlews of the strlke shown ln Flgure 1 lllustratlng locked and unlocked posltlons of the locklng member and the keeper~
Flgure 7 18 a slde elevatlon vlew of the strlke shown ln Flgure 1 wlth the locklng member ln lts unlocked posltlon~
Flgures 9 and 10 are slde elevatlon vlews of an alternatlve embodlment of the locklng member wlth the locklng member ln, respectlvely, unlocked and locked posltlonst Flgure 11 18 a perspectlve vlew of the locklng member shown in Flgures 9 and 10;
4d ._ Figs. 12, 13 and 14, are, respectively, perspective front elevation and side elevation views of a further embodiment of the locking member; and Figs. 15 and 16 are, respectively, perspective and side elevation views of a further embodiment of the locking member.
With reference to Figs. 1-5, the preferred embodiment of the electrically operable strike 1 of the invention is illustrated in Fig. 1 as mounted in a recess ~of a door frame 11 associated with a door 2 having a latch 3 engaging a keeper 4 of the strike 1.
The keeper 4 is pivotally mounted on the housing 5 by means of a pin or rod 6 secured at one end to the top wall 7 and at its opposite end to a tab 8 integral with the housing 5, the keeper 4 being pivotable around the pin 6. The housing 5 also has a pair of tabs 9 and 10 integral therewith for securing it to the door frame 11, such as by means of the screws 12.
The housing 5 has a side wall 13, a bottom wall 14, a rear wall 15 and a cover 16. The bottom wall 14 has a pair of slots 17 and 18 (see Fig. 5) for receiving arms 19 and 20 (see ~ig. 4) at one end of the cover 16 which with a tab 21 at the opposite end of the cover 16 having a dimple 22 receivable in a recess 23 (see Fig. 4) in the top wall 7 releasably secure the cover 16 to the housing 5.
As seen in Fig~. 3-5, the keeper 4 has, at the rear thereof, a pair of lugs 24 and 25 extending perpendicularly to the axis of the pin 6. The lugs 24 and 25 are spaced apart in the direction of said axis by a predetermined distance, and although the end faces of the lugs 24 and 25 can be in planes perpendicular to the lengths of the lugs 24 and 25, for reasons set forth hereinafter, the lugs 24 and 25 preferably have bevelled end faces 24a and 25a (see Fig. 3).
A locking member 26 (see particularly Fig. 5) is slidably ~00~906 '_ mounted in the housing 5 and has a pair of wall sections 27 and 28 which bear against the rear wall 15 of the housing 5, a bottom portion 29, a side wall 30 and a pair of arm~ 31 and 32 which extend toward the lugs 24 and 25. Although the end faces of the arms 31 and 32 can be in planes perpendicular to the lengths of the arms 31 and 32, particularly if the end faces of the lugs 24 and 25 are not bevelled, preferably, the arms 31 and 32 have bevelled end faces 31a and 32a, the bevelling being opposite to the bevelling of the end faces 24a and 25a of the lugs 24 and 25 for the reasons set forth hereinafter. Preferably, the locking member 26 is entirely made of magnetic steel, but in any event, at least the bottom portion 29 is made of a magnetic material for completing the magnetic circuit of the remotely and electrically energizable coils 33 and 34 and causing the locking member 26 move toward the coils 33 and 34 when they are energized. The coils 33 and 34 comprise windings or coils of insulated wire covered by tape and cores 35 and 36 of magnetic material (see Pigs. 3 and 5), and the cores 35 and 36 are secured to a plate 37 of magnetic material which has as pair of ears, only one of which, 38, is shown in Figs. 2 and 5, which fit into slots 39 and 40 (see Fig. 5) in the side wall 13 of the housing 5. The plate 37 also has an ear 37a which fits into a slot 40a in the rear wall 15. The cover 16 maintains such ears in the slots 39 and 40 when it is in place, but with removal of the cover 16, the coil assembly may be easily removed and replaced.
Biassing means in the form of compression springs 41 and 42 encircling the core8 35 and 36 act between the locking member 26 and housing 5 through the coil assembly to urge the locking member 26 upwardly, as viewed in Figs. 1, 3 and 4, and into the position shown in these Figs. in which position the arms 31 and 32, which have the same spacing as the lugs 24 and 25, are ~ J
'-- 200S906 '~......
engageable with the lugs 24 and 25 and prevent plvoting of the keeper 4.
Biassing means in the form of a spring 43 (see ~i98. 6 and 8) acts between the keeper 4 and the housing side wall 13 to urge the keeper 4 into its locking position shown in Figs. 1-5 and 6.
The embodiment of the strike illustrated in Figs. 1-7 is of the normally locked type and i8 unlocked by electrical energization of the coils 33 and 34, electrical energy being supplied thereto by the wire leads 44 (see Figs. 3 and 4) which pass through an aperture 45 in the bottom wall of the housing 5.
Accordingly, as long as the locking member 26 i8 in its upper, keeper locking position, the door 2 is prevented from opening, but when the coils 33 and 34 are electrically energized, the locking member 26 slides rectilinearly in the downward direction to a keeper unlocking position, as illustrated in Fig.
7. In the latter position, the keeper 4 is free to pivot because the arms 31 and 32 are out of the paths of movement of the lug~
24 and 25, the movement of the keeper 4 and its lugs being shown in Figs. 6 and 8. In Fig. 6, the keeper 4 is locked, and in Fig.
8, the keeper 4 is unlocked.
Of course, when energization of the coils 33 and 34 is discontinued, the keeper 4 is moved into its locking position by the spring 43 and the locking member 26 is moved into its locking position by the springs 41 and 42.
It will be observed that when pressure is applied to the door 2 to open it, the latch 3 applies a pivoting force to the keeper 4 urging it toward its unlocking position. If the locking member 26 i8 in its locking position, such force is applied to the arms 31 and 32 by way of the lugs 24 and 25 and thence, to the rear wall 15 of the housing 5. The arms 31 and 32 can be relatively sturdy and are sub~ect to only small bending forces, - 2~05906 '_, and therefore, the locking member 26 can withstand relatively high forces applied thereto by a person attempting to force the door 2 open.
While the end faces 24a and 25a and the end faces 31a and 32a can be perpendicular to the lengths of the lugs 24 and 25 and the arms 31 and 32, and hence, parallel to the pivot axis of the keeper 4, if a relatively large force is applied to the door 2 in the opening direction, the pulling force of the coils 33 and 34 can be insufficient to move the locking member 26. To aid in causing the locking member 26 to move its unlocking position with such a force, without significantly reducing the ability of the locking member 26 to resist relatively large door forces, the end faces 24a, 25a, 31a and 32a preferably are oppositely bevelled at an angle, such as 10~, but not more than 15~, as indicated in the drawings.
While a single coil could be used in the strike of the invention, such as by omitting one of the coils 33 or 34 and centering the remaining coil with respect to the magnetic portion 29 of the locking member 26, the use of two coils 33 and 34 provides, in the arrangement shown, an improvement in the pulling force exerted on the locking member 26 over what one would expect from merely using two coils or increased energization of a coil. This result is apparently due to the magnetic circuit provided by the structure shown, it being observed that the magnetic circuit is relatively short and is by way of the plate 37 and the magnetic portion 29 and not solely by way of the walls of the housing 5. Furthermore, since the movement of the locking member 26 can be relatively small due to the fact that the lugs 24 and 25 and the arms 31 and 32 can have a small thickness, the magnetic portion 29 can be relatively close to the ends of the cores 35 and 36 in the lockinq position of the locking member 26.
~0(:~906 '~_ It w$11 be observed that the strike of the invention has only one moving part for locking and unlocking the keeper 4.
Also, it will be observed that the upper end of the wall section 27 abuts the inner surface of the top wall 7 of the housing 5 (see particularly Fig. 3) and is maintained in such position, in the absence of energization of the coils 33 and 34, by the springs 41 and 42. Accordingly, gravity is not relied upon to position the locking member 26 so that the strike of the invention can be used in any desired orientation.
Since only one moving part is required for locking and unlocking of the keeper 4 and whether the keeper 4 is normally locked or unlocked depends upon the positions of the arms 31 and 32 on the locking member 26, it is a simple matter to change the strike from one in which the keeper 4 is normally locked to one in which the keeper 4 is normally unlocked by either substituting a locking member with its arms differently positioned or by making the arms adjustable.
Figs. 9, 10 and 11 illustrate a locking member 26a having arms 46 and 47 positioned thereon so that when the locking member 26a abuts the top wall 7, as shown in Fig. 9, the arms 46 and 47 are out of the path of movement of the lugs 24 and 25. When the coils 33 and 34 are energized, the locking member 26a is pulled into its locking position shown in Fig. 10, in which position, the arms 46 and 47 can engage the lugs 24 and 25 and prevent pivoting of the keeper 4.
It will be observed from a comparision of Figs. 5 and 11 that in addition to the positioning of the arms 46 and 47, the locking member 26a differs from the lock~ng member 26 in other features. ~owever, the locking member 26a can, except for the positioning of the arms 46 and 47, be of the same structure as the locking member 26 or the locking member 26 can be of the same structure as the locking member 26a except for the positioning of - ;~00~90~i ..." ~
the arms 24 and 25 relative to the end of the locking member which abuts the top wall 7.
Figs. 12-14 illustrate an embodiment of a locking member with arms 48 and 49 which can be adjusted so that the keeper 4 is either normally locked or normally unlocked. The locking member 26b shown in Figs. 12-14 has the arms 48 and 49 secured thereto, such as by screws 50 and 51, which extend through ~lots 52 and 53 in the arms 48 and 49. Thus, the arms 48 and 49 can be held in the positions shown in Figs. 12-14 by the screws 50 and 51, which positions correspond to the normally unlocked condition of the keeper 4. ~owever, by loosening the screws 50 and 51 and moving the arms 48 and 49 downwardly, as viewed in Figs. 12-14, and then, tightening the screws 50 and 51, the arms 48 and 49 can be secured in positions which correspond to the positions of the arms 31 and 32 and hence, the normally locked condition of the keeper 4.
Another embodiment of a single locking member which can be used for normally locking or unlocking the keeper 4 is illustrated in Figs. 15 and 16. The locking member 26c shown in these figures has four arms 54, 55, 56 and 57, arms 54 and 56 having positions corresponding to the positions of the arms 46 and 47 and arms 55 and 57 having positions corresponding to the positions of the arms 31 and 32. Each of the arms 54-57 has a line of weakening 58 (see Fig. 16) so that by bending an arm tran~versely to its length and at the line 58, such as with pliers, any arm can be removed. For example, if it is desired to have the keeper 4 be normally unlocked, the arms 55 and 57 would be removed leaving the arms 54 and 56 in place. Similarly, if it is desired to have the keeper 4 normally locked, the arms 54 and 56 would be removed leaving the arms 55 and 57 in place.
Accordingly with the embodiments of the locking member illustrated in Flgs. 12-16, it is necessary to manufacture only a ' 200S90~
~W -single locking member which can be used to provide a strike with a keeper which i8 either normally locked or normally unlocked.
If it is not known whether the strike will be installed with a normally locked or a normally unlocked keeper, it is unnecessary to supply a strike with two locking members 26a and 26b or to stock two strikes, one with a locking member 26a and one with a locking member 26b.
It will be apparent to those ~killed in the art that various modifications of the invention may be made. For example, the arms of the locking member may be held in a fixed position and the keeper may be moved rectilinearly by the coil. Also, instead of pivoting, the keeper can slide toward and away from the latch and be permitted or prevented from so sliding by the arms of the slidable locking member. In addition, although not preferred, one of the arms on the locking member, e.g. 31 or 32 or 46 or 47, and the corresponding lug on the keeper 4 may be omitted.
Furthermore, although the preferred embodiment comprises a pair of coils 33 and 34 with fi~ed cores 35 and 36 which are energizable from outside the housing for moving the locking member, it will be apparent that such cores and coils can be replaced by a different type of locking member actuating means ~uch as a solenoid with a movable armature pivotally connected to the locking member or an air operable piston and cylinder assembly with the piston pivotally connected to the locking member. The coils 33 and 34 are preferred because of their simplicity and because no mechanical connection to the locking member is required.
Although preferred embodiments of the pre8ent invention have been described and illustrated, it will be apparent to those skilled in the art that various modifications may be made without departing from the principles of the invention.
STRIRE WIT8 RECTILINEARLY MOVABLE REEPER ~OCRING MEM8ER
BACRGROUND OF T8E lNv~.,ION
The invention relates to a strike used to prevent the opening of an associated acce~s obstructing member, such as a door.
Electrically operable strikes are well known in the art, and for example, they are used frequently in connection with the main access door of an apartment building to prevent entry into the building until a solenoid associated with the strike is electrically energized to permit pivoting of the strike keeper.
See, for example, U.S. Patents Nos. 4,471,983; 3,638,984 and 3,749,435. Normally, the solenoid is energized by means of a circuit completing switch remote from the strike.
It is also known in the art to prevent release of the latch or keeper of the strike and opening of the door by electrically energizing the solenoid. However, usually there are substantial differences between the components of a strike which will release the keeper with energization of the solenoid and the components of a strike which will lock the keeper with energization of the ~olenoid.
In addition, the known strikes usually require several components, such as pivotable levers, etc. which increases the assembly problems and the likelihood of malfunctioning because of misalignment, binding or corrosion. Also, if opening force is being applied to the door, the solenoid generally will be unable to cause release of the keeper and/or the components may be unable to prevent opening of the door if a sufficient opening force is applied to the door due to breaking or bending of the locking components.
In general, prior art strikes comprise a single solenoid which has a winding of a conductor which, when electrically 9~
energized, actuates a centrally disposed armature which has a locking member connected thereto and biassed by a spring 80 that the keeper prevents pivoting of the locking member unless the solenoid is electrically energized. To keep the energizing current low, the biassing spring usually has a force which is onlv slightly more than the force required to return the locking member and the armature to their locking or unlocking positions.
Such spring return force may, at times, such as with misalignment of parts, accumulation of foreign matter, etc., be insufficient to return them to their unlocking or locking positions.
It is also known in the art to use an air actuated piston and cylinder assembly with the piston connected to the locking member to actuate the locking member.
OBJECTS OF l~E INV~N'~ ION
One object of the invention i8 to provide a strike of simplified construction.
Another object of the invention is to provide a strike which, by simple replacement of the locking device or simple modification of a single locking member, permits the strike to be changed from locking of the keeper with energization of the actuating means to unlocking of the keeper with energization of the actuating means.
Another object of the invention is to provide a strike construction which requires a force to break the locking member which is greater than the force required to break prior art locking mechanisms.
Another object of the invention is to provide a strike construction in which the locking member can be moved by the actuating means even if substantial force is applied to the keeper.
A further object of the invention i8 to provide a strike with an electromagnet and improved magnetic circuit for the 2(~0~906 '~
electromagnet 80 that the locking member operating force for a given amount of electrical current i~ greater than in prior art strikes.
Other objects of the invention are to make assembly of the strike less critical and to provide a strike which operates equally as well in any orientation.
BRIEF SUMMARY OF THE INV~N'~ ION
The objects of the invention are attained in the preferred embodiment of the invention by pivotally mounting a keeper on a housing, such keeper having a pair of arms or lugs e~tending in planes perpendicular to the pivot a~is, and by slidably mounting a locking member of magnetic material and having arms engageable with or spaced from the lugs on the keeper depending on the position of the locking member. The keeper is urged into its locking position by a spring, and the locking member is urged into the desired position, locking or unlocking, by a spring.
The locking member bears against the housing so that any force applied thereto by the keeper is transmitted to a wall of the housing. A pair of electromagnet coils in the housing attract the locking member, causing it to move rectilinearly, when the coils are electrically energized.
In one embodiment of the invention, two locking members, one having said arms differently positioned from the arms of the other, are provided so that by the mere substitution of one locking member for the other, the keeper is normally locked or is free to pivot until the electromagnetic coils are energized.
In another embodiment of the invention, the locking member has four arms, two of which can be removed to cause it normally to lock or permit pivoting of the keeper until the coils are energized.
In 8 further embodiment of the invention, the arms of the locking member are ad~ustably mounted on the locking member 80 ~ , 20n,,~-~G6 . "~
that by ad~ustlng the posltlons of the arms, the keeper ls normally locked or free to plvot.
Accordlng to a broad aspect of the lnventlon there ls provlded a strlke comprlslng.
a houslng wlth a plurallty of walls;
a keeper mounted on sald houslng for movement from a flrst posltlon to a second posltlon for respectlvely engaglng a latch and movlng away from the latch, sald keeper havlng at least one lug extendlng therefrom toward a wall of sald houslng and movable along a predetermlned path ln a plane wlth movement of sald keeper;
a locklng member slldably mounted on sald houslng lntermedlate sald keeper and sald wall of sald houslng and movable rectlllnearly ln the directlon transverse to sald plane and sald predetermlned path of movement of sald lug, sald locklng member havlng at least one arm thereon extendlng toward sald lug, transversely of and away from sald wall and transversely to the dlrectlon of slldlng movement of sald locklng member, sald arm belng engageable wlth sald lug ln one posltlon of sald locklng member relatlve to sald keeper for preventlng movement of sald keeper and sald arm belng out of the path of movement of sald lug when sald locklng member ls ln another posltlon relatlve to sald keeper;
blasslng means actlng between sald locklng member and said houslng and urglng sald locklng member lnto one of the relative posltlons thereof~ and locklng member actuatlng mearls for movlng sald locklng member from the last-mentloned sald one relatlve sald posltlon thereof lnto the other relatlve pos~tlon thereof. '-Accordlng to another broad aspect of the lnventlon there ls provlded a strlke comprlslng:
a houslng;
~ 'J 0 5 ~
a keeper plvotally mounted on sald houslng for plvotal movement around an axls from a flrst posltlon to a second posltion for respectlvely engaglng a latch and movlng away from the latch, sald keeper havlng two lugs extendlng therefrom transversely to sald axls and spaced from each other in the dlrectlon of sald axls by a predetermlned dlstance7 a locklng member mounted on sald houslng for rectlllnear slidlng movement ln the dlrectlon substantlally parallel to sald axls, sald locklng member havlng two arms thereon, each arm extendlng, respectlvely, toward one of sald lugs and belng engageable wlth the respectlve one of sald lugs ln one posltlon of sald locklng member relatlve to sald keeper for preventlng movement of sald keeper and belng out of the paths of movement of sald lugs when sald locklng member ls ln another posltlon relatlve to sald keeper, and one of sald arms belng spaced from t the other of sald arms by sald predetermlned dlstance~
blasslng means actlng between sald locklng member and sald houslng and urglng sald locklng member lnto one of the relatlve posltlons thereof1 and locklng member actuatlng means for movlng sald locklng member from the last mentloned sald one relatlve sald po~ltlon thereof lnto the other relatlve pO8 ltlon thereof.
Accordlng to another broad aspect of the lnventlon there ls provlded a strlke comprlslng:
a houslng, sald houslng havlng a front wall, a rear wall spaced from sald front wall and a top wall extendlng from sald front wall to sald rear wall~
a keeper plvotally mounted at sald front wall for plvotal movement around an axls substantlally parallel to sald rear wall for movement from a flrst posltlon to a second posltlon for respectlvely engaglng a latch and movlng away from the latch, said keeper havlng two lugs thereon extendlng therefrom 4a '~ '~' 5 5 ~b ~
toward sald rear wall but termlnatlng ln spaced relatlon to sald rear wall, sald lugs belng spaced from each other ln the dlrectlon of sald axls by a predetermlned dlstance;
a locklng member mounted ln sald houslng for rectlllr-ar slldlng movement substantlally parallel to sald axls, sald locklng member belng mounted lntermedlate sald front wall and sald rear wall and slldably abuttlng sald rear wall, sald locklng member havlng two arms spaced from each other by sald predetermlned dlstance and extendlng, respectlvely, toward one of sald lugs, sald locklng member belng slldable between one posltlon and another posltlon, sald arms belng engageable wlth sald lugs ln one posltlon of sald locklng member to prevent plvotlng of sald keeper and belng out of the paths of movement of sald lugs wlth plvotlng of sald keeper ln the other posltlon of sald locklng member to permlt plvotlng of sald keeper;
blasslng means actlng between sald locklng member and'sald houslng for urglng sald locklng member lnto a posltlon flxed ln relatlon to sald top wallS and locklng member actuatlng means mounted at the slde of sald locklng member opposlte from sald top wall for pulllng sald locklng member from sald posltlon thereof whlch ls flxed ln relatlon to sald top wall toward sald locklng member actuatlng means upon energlzatlon thereof.
Accordlng to another broad aspect of the lnventlon there ls provlded a strlke comprlslng~
a houslng wlth a plurallty of walls;
a keeper mounted on sald houslng for movement from a flrst positlon to a second posltlon for respectlvely engaglng a latch and movlng away from the latch, sald keeper havlng at least one lug extendlng therefrom toward a wall of sald houslng and movable along a predetermlned path ln a plane wlth movement of sald keeper~
4b , ~
2 ,(~ JO~
~_ 67487-389 ~ -a locklng member slldably mounted on sald houslng lntermedlate sald keeper and sald wall of sald houslng and movable rectlllnearly ln the dlrectlon transverse to sald plane and sald predetermlned path of movement of sald lug, said locklng member havlng means thereon extendlng transversely to sald predetermlned path of movement of sald lug, sald means belng engageable wlth sald lug ln one posltlon of sald locklng member relatlve to sald keeper for preventlng movement of sald keeper and sald means belng out of the path of movement of sald lug when sald locklng member ls ln another posltlon relatlve to sald keeper to permlt movement of sald keepert blasalng means actlng between sald locklng member and sald houslng and urglng sald locklng member lnto one of the rel tlve posltlons thereof~ and locklng member actuatlng means for movlng sald locklng member from the last-mentloned sald one relatlve sald posltlon thereof lnto the other relatlve posltlon thereof.
~RIBF DI~S~l~llON OF THF DRAWINGS
Other ob~ects and advantages of the present lnventlon wlll be apparent from the followlng detalled descrlptlon of the presently preferred embodlments thereof, whlch descrlptlon should be consldered ln con~unctlon wlth the accompanylng drawlngs ln whlch~
Flgure l ls a perspectlve vlew of an embodlment of the electrlcally operable strlke mounted on a door frame an~ a portlon of a door controlled thereby7 Flgures 2 and 3 are, respectlvely, front and slde elevatlon vlews of the strlke shown ln Flgure 1, the strlke cover belng omltted ln Flgure 3~ -~
Flgures 4 and 5 are, respectlvely, partly exploded and exploded perspectlve vlews of the strlke shown ln Flgure 1, the strlke cover belng omltted ln Flgure 57 4c 2~05~a~
~- 67487-389 . --Flgures 6 and 8 are cross-sectlonal plsn vlews of the strlke shown ln Flgure 1 lllustratlng locked and unlocked posltlons of the locklng member and the keeper~
Flgure 7 18 a slde elevatlon vlew of the strlke shown ln Flgure 1 wlth the locklng member ln lts unlocked posltlon~
Flgures 9 and 10 are slde elevatlon vlews of an alternatlve embodlment of the locklng member wlth the locklng member ln, respectlvely, unlocked and locked posltlonst Flgure 11 18 a perspectlve vlew of the locklng member shown in Flgures 9 and 10;
4d ._ Figs. 12, 13 and 14, are, respectively, perspective front elevation and side elevation views of a further embodiment of the locking member; and Figs. 15 and 16 are, respectively, perspective and side elevation views of a further embodiment of the locking member.
With reference to Figs. 1-5, the preferred embodiment of the electrically operable strike 1 of the invention is illustrated in Fig. 1 as mounted in a recess ~of a door frame 11 associated with a door 2 having a latch 3 engaging a keeper 4 of the strike 1.
The keeper 4 is pivotally mounted on the housing 5 by means of a pin or rod 6 secured at one end to the top wall 7 and at its opposite end to a tab 8 integral with the housing 5, the keeper 4 being pivotable around the pin 6. The housing 5 also has a pair of tabs 9 and 10 integral therewith for securing it to the door frame 11, such as by means of the screws 12.
The housing 5 has a side wall 13, a bottom wall 14, a rear wall 15 and a cover 16. The bottom wall 14 has a pair of slots 17 and 18 (see Fig. 5) for receiving arms 19 and 20 (see ~ig. 4) at one end of the cover 16 which with a tab 21 at the opposite end of the cover 16 having a dimple 22 receivable in a recess 23 (see Fig. 4) in the top wall 7 releasably secure the cover 16 to the housing 5.
As seen in Fig~. 3-5, the keeper 4 has, at the rear thereof, a pair of lugs 24 and 25 extending perpendicularly to the axis of the pin 6. The lugs 24 and 25 are spaced apart in the direction of said axis by a predetermined distance, and although the end faces of the lugs 24 and 25 can be in planes perpendicular to the lengths of the lugs 24 and 25, for reasons set forth hereinafter, the lugs 24 and 25 preferably have bevelled end faces 24a and 25a (see Fig. 3).
A locking member 26 (see particularly Fig. 5) is slidably ~00~906 '_ mounted in the housing 5 and has a pair of wall sections 27 and 28 which bear against the rear wall 15 of the housing 5, a bottom portion 29, a side wall 30 and a pair of arm~ 31 and 32 which extend toward the lugs 24 and 25. Although the end faces of the arms 31 and 32 can be in planes perpendicular to the lengths of the arms 31 and 32, particularly if the end faces of the lugs 24 and 25 are not bevelled, preferably, the arms 31 and 32 have bevelled end faces 31a and 32a, the bevelling being opposite to the bevelling of the end faces 24a and 25a of the lugs 24 and 25 for the reasons set forth hereinafter. Preferably, the locking member 26 is entirely made of magnetic steel, but in any event, at least the bottom portion 29 is made of a magnetic material for completing the magnetic circuit of the remotely and electrically energizable coils 33 and 34 and causing the locking member 26 move toward the coils 33 and 34 when they are energized. The coils 33 and 34 comprise windings or coils of insulated wire covered by tape and cores 35 and 36 of magnetic material (see Pigs. 3 and 5), and the cores 35 and 36 are secured to a plate 37 of magnetic material which has as pair of ears, only one of which, 38, is shown in Figs. 2 and 5, which fit into slots 39 and 40 (see Fig. 5) in the side wall 13 of the housing 5. The plate 37 also has an ear 37a which fits into a slot 40a in the rear wall 15. The cover 16 maintains such ears in the slots 39 and 40 when it is in place, but with removal of the cover 16, the coil assembly may be easily removed and replaced.
Biassing means in the form of compression springs 41 and 42 encircling the core8 35 and 36 act between the locking member 26 and housing 5 through the coil assembly to urge the locking member 26 upwardly, as viewed in Figs. 1, 3 and 4, and into the position shown in these Figs. in which position the arms 31 and 32, which have the same spacing as the lugs 24 and 25, are ~ J
'-- 200S906 '~......
engageable with the lugs 24 and 25 and prevent plvoting of the keeper 4.
Biassing means in the form of a spring 43 (see ~i98. 6 and 8) acts between the keeper 4 and the housing side wall 13 to urge the keeper 4 into its locking position shown in Figs. 1-5 and 6.
The embodiment of the strike illustrated in Figs. 1-7 is of the normally locked type and i8 unlocked by electrical energization of the coils 33 and 34, electrical energy being supplied thereto by the wire leads 44 (see Figs. 3 and 4) which pass through an aperture 45 in the bottom wall of the housing 5.
Accordingly, as long as the locking member 26 i8 in its upper, keeper locking position, the door 2 is prevented from opening, but when the coils 33 and 34 are electrically energized, the locking member 26 slides rectilinearly in the downward direction to a keeper unlocking position, as illustrated in Fig.
7. In the latter position, the keeper 4 is free to pivot because the arms 31 and 32 are out of the paths of movement of the lug~
24 and 25, the movement of the keeper 4 and its lugs being shown in Figs. 6 and 8. In Fig. 6, the keeper 4 is locked, and in Fig.
8, the keeper 4 is unlocked.
Of course, when energization of the coils 33 and 34 is discontinued, the keeper 4 is moved into its locking position by the spring 43 and the locking member 26 is moved into its locking position by the springs 41 and 42.
It will be observed that when pressure is applied to the door 2 to open it, the latch 3 applies a pivoting force to the keeper 4 urging it toward its unlocking position. If the locking member 26 i8 in its locking position, such force is applied to the arms 31 and 32 by way of the lugs 24 and 25 and thence, to the rear wall 15 of the housing 5. The arms 31 and 32 can be relatively sturdy and are sub~ect to only small bending forces, - 2~05906 '_, and therefore, the locking member 26 can withstand relatively high forces applied thereto by a person attempting to force the door 2 open.
While the end faces 24a and 25a and the end faces 31a and 32a can be perpendicular to the lengths of the lugs 24 and 25 and the arms 31 and 32, and hence, parallel to the pivot axis of the keeper 4, if a relatively large force is applied to the door 2 in the opening direction, the pulling force of the coils 33 and 34 can be insufficient to move the locking member 26. To aid in causing the locking member 26 to move its unlocking position with such a force, without significantly reducing the ability of the locking member 26 to resist relatively large door forces, the end faces 24a, 25a, 31a and 32a preferably are oppositely bevelled at an angle, such as 10~, but not more than 15~, as indicated in the drawings.
While a single coil could be used in the strike of the invention, such as by omitting one of the coils 33 or 34 and centering the remaining coil with respect to the magnetic portion 29 of the locking member 26, the use of two coils 33 and 34 provides, in the arrangement shown, an improvement in the pulling force exerted on the locking member 26 over what one would expect from merely using two coils or increased energization of a coil. This result is apparently due to the magnetic circuit provided by the structure shown, it being observed that the magnetic circuit is relatively short and is by way of the plate 37 and the magnetic portion 29 and not solely by way of the walls of the housing 5. Furthermore, since the movement of the locking member 26 can be relatively small due to the fact that the lugs 24 and 25 and the arms 31 and 32 can have a small thickness, the magnetic portion 29 can be relatively close to the ends of the cores 35 and 36 in the lockinq position of the locking member 26.
~0(:~906 '~_ It w$11 be observed that the strike of the invention has only one moving part for locking and unlocking the keeper 4.
Also, it will be observed that the upper end of the wall section 27 abuts the inner surface of the top wall 7 of the housing 5 (see particularly Fig. 3) and is maintained in such position, in the absence of energization of the coils 33 and 34, by the springs 41 and 42. Accordingly, gravity is not relied upon to position the locking member 26 so that the strike of the invention can be used in any desired orientation.
Since only one moving part is required for locking and unlocking of the keeper 4 and whether the keeper 4 is normally locked or unlocked depends upon the positions of the arms 31 and 32 on the locking member 26, it is a simple matter to change the strike from one in which the keeper 4 is normally locked to one in which the keeper 4 is normally unlocked by either substituting a locking member with its arms differently positioned or by making the arms adjustable.
Figs. 9, 10 and 11 illustrate a locking member 26a having arms 46 and 47 positioned thereon so that when the locking member 26a abuts the top wall 7, as shown in Fig. 9, the arms 46 and 47 are out of the path of movement of the lugs 24 and 25. When the coils 33 and 34 are energized, the locking member 26a is pulled into its locking position shown in Fig. 10, in which position, the arms 46 and 47 can engage the lugs 24 and 25 and prevent pivoting of the keeper 4.
It will be observed from a comparision of Figs. 5 and 11 that in addition to the positioning of the arms 46 and 47, the locking member 26a differs from the lock~ng member 26 in other features. ~owever, the locking member 26a can, except for the positioning of the arms 46 and 47, be of the same structure as the locking member 26 or the locking member 26 can be of the same structure as the locking member 26a except for the positioning of - ;~00~90~i ..." ~
the arms 24 and 25 relative to the end of the locking member which abuts the top wall 7.
Figs. 12-14 illustrate an embodiment of a locking member with arms 48 and 49 which can be adjusted so that the keeper 4 is either normally locked or normally unlocked. The locking member 26b shown in Figs. 12-14 has the arms 48 and 49 secured thereto, such as by screws 50 and 51, which extend through ~lots 52 and 53 in the arms 48 and 49. Thus, the arms 48 and 49 can be held in the positions shown in Figs. 12-14 by the screws 50 and 51, which positions correspond to the normally unlocked condition of the keeper 4. ~owever, by loosening the screws 50 and 51 and moving the arms 48 and 49 downwardly, as viewed in Figs. 12-14, and then, tightening the screws 50 and 51, the arms 48 and 49 can be secured in positions which correspond to the positions of the arms 31 and 32 and hence, the normally locked condition of the keeper 4.
Another embodiment of a single locking member which can be used for normally locking or unlocking the keeper 4 is illustrated in Figs. 15 and 16. The locking member 26c shown in these figures has four arms 54, 55, 56 and 57, arms 54 and 56 having positions corresponding to the positions of the arms 46 and 47 and arms 55 and 57 having positions corresponding to the positions of the arms 31 and 32. Each of the arms 54-57 has a line of weakening 58 (see Fig. 16) so that by bending an arm tran~versely to its length and at the line 58, such as with pliers, any arm can be removed. For example, if it is desired to have the keeper 4 be normally unlocked, the arms 55 and 57 would be removed leaving the arms 54 and 56 in place. Similarly, if it is desired to have the keeper 4 normally locked, the arms 54 and 56 would be removed leaving the arms 55 and 57 in place.
Accordingly with the embodiments of the locking member illustrated in Flgs. 12-16, it is necessary to manufacture only a ' 200S90~
~W -single locking member which can be used to provide a strike with a keeper which i8 either normally locked or normally unlocked.
If it is not known whether the strike will be installed with a normally locked or a normally unlocked keeper, it is unnecessary to supply a strike with two locking members 26a and 26b or to stock two strikes, one with a locking member 26a and one with a locking member 26b.
It will be apparent to those ~killed in the art that various modifications of the invention may be made. For example, the arms of the locking member may be held in a fixed position and the keeper may be moved rectilinearly by the coil. Also, instead of pivoting, the keeper can slide toward and away from the latch and be permitted or prevented from so sliding by the arms of the slidable locking member. In addition, although not preferred, one of the arms on the locking member, e.g. 31 or 32 or 46 or 47, and the corresponding lug on the keeper 4 may be omitted.
Furthermore, although the preferred embodiment comprises a pair of coils 33 and 34 with fi~ed cores 35 and 36 which are energizable from outside the housing for moving the locking member, it will be apparent that such cores and coils can be replaced by a different type of locking member actuating means ~uch as a solenoid with a movable armature pivotally connected to the locking member or an air operable piston and cylinder assembly with the piston pivotally connected to the locking member. The coils 33 and 34 are preferred because of their simplicity and because no mechanical connection to the locking member is required.
Although preferred embodiments of the pre8ent invention have been described and illustrated, it will be apparent to those skilled in the art that various modifications may be made without departing from the principles of the invention.
Claims (15)
1. A strike comprising, a housing with a plurality of walls;
a keeper mounted on said housing for movement from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having at least one lug extending therefrom toward a wall of said housing and movable along a predetermined path in a plane with movement of said keeper;
a locking member slidably mounted on said housing intermediate said keeper and said wall of said housing and movable rectilinearly in the direction transverse to said plane and said predetermined path of movement of said lug, said locking member having at least one arm thereon extending toward said lug, transversely of and away from said wall and transversely to the direction of sliding movement of said locking member, said arm being engageable with said lug in one position of said locking member relative to said keeper for preventing movement of said keeper and said arm being out of the path of movement of said lug when said locking member is in another position relative to said keeper;
biassing means acting between said locking member and said housing and urging said locking member into one of the relative positions thereof, and locking member actuating means for moving said locking member from the last-mentioned said one relative said position thereof into the other relative position thereof.
a keeper mounted on said housing for movement from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having at least one lug extending therefrom toward a wall of said housing and movable along a predetermined path in a plane with movement of said keeper;
a locking member slidably mounted on said housing intermediate said keeper and said wall of said housing and movable rectilinearly in the direction transverse to said plane and said predetermined path of movement of said lug, said locking member having at least one arm thereon extending toward said lug, transversely of and away from said wall and transversely to the direction of sliding movement of said locking member, said arm being engageable with said lug in one position of said locking member relative to said keeper for preventing movement of said keeper and said arm being out of the path of movement of said lug when said locking member is in another position relative to said keeper;
biassing means acting between said locking member and said housing and urging said locking member into one of the relative positions thereof, and locking member actuating means for moving said locking member from the last-mentioned said one relative said position thereof into the other relative position thereof.
2. A strike as set forth in claim 1 wherein said locking member actuating means is an electrically energizable coil and said locking member has a magnetic portion adjacent but spaced from said coil which is urged toward said coil by the magnetic field thereof when said coil is electrically energized.
3. A strike as set forth in claim 2 wherein said biassing means is intermediate said magnetic portion and said coil.
4. A strike as set forth in claim 3 wherein said locking member actuating means comprises a pair of wire coils in laterally spaced relation and a pair of magnetic cores, one core within one of said coils and the other core within the other of said coils and wherein said magnetic portion of said locking member extends from adjacent one of said cores to adjacent the other of said cores.
5. A strike as set forth in claim 1 wherein said housing has a wall extending in a plane substantially perpendicular to the length of said arm and said locking member is in contact with said wall of said housing.
6. A strike comprising:
a housing;
a keeper pivotally mounted on said housing for pivotal movement around an axis from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having two lugs extending therefrom transversely to said axis and spaced from each other in the direction of said axis by a predetermined distance;
a locking member mounted on said housing for rectilinear sliding movement in the direction substantially parallel to said axis, said locking member having two arms thereon, each -arm extending, respectively, toward one of said lugs and being engageable with the respective one of said lugs in one position of said locking member relative to said keeper for preventing movement of said keeper and being out of the paths of movement of said lugs when said locking member is in another position relative to said keeper, and one of said arms being spaced from the other of said arms by said predetermined distance;
biassing means acting between said locking member and said housing and urging said locking member into one of the relative positions thereof; and locking member actuating means for moving said locking member from the last-mentioned said one relative said position thereof into the other relative position thereof.
a housing;
a keeper pivotally mounted on said housing for pivotal movement around an axis from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having two lugs extending therefrom transversely to said axis and spaced from each other in the direction of said axis by a predetermined distance;
a locking member mounted on said housing for rectilinear sliding movement in the direction substantially parallel to said axis, said locking member having two arms thereon, each -arm extending, respectively, toward one of said lugs and being engageable with the respective one of said lugs in one position of said locking member relative to said keeper for preventing movement of said keeper and being out of the paths of movement of said lugs when said locking member is in another position relative to said keeper, and one of said arms being spaced from the other of said arms by said predetermined distance;
biassing means acting between said locking member and said housing and urging said locking member into one of the relative positions thereof; and locking member actuating means for moving said locking member from the last-mentioned said one relative said position thereof into the other relative position thereof.
7. A strike comprising:
a housing, said housing having a front wall, a rear wall spaced from said front wall and a top wall extending from said front wall to said rear wall;
a keeper pivotally mounted at said front wall for pivotal movement around an axis substantially parallel to said rear wall for movement from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having two lugs thereon extending therefrom toward said rear wall but terminating in spaced relation to said rear wall, said lugs being spaced from each other in the direction of said axis by a predetermined distance;
a locking member mounted in said housing for rectilinear sliding movement substantially parallel to said axis, said locking member being mounted intermediate said front wall and said rear wall and slidably abutting said rear wall, said locking member having two arms spaced from each other by said predetermined distance and extending, respectively, toward one of said lugs, said locking member being slidable between one position and another position, said arms being engageable with said lugs in one position of said locking member to prevent pivoting of said keeper and being out of the paths of movement of said lugs with pivoting of said keeper in the other position of said locking member to permit pivoting of said keeper;
biassing means acting between said locking member and said housing for urging said locking member into a position fixed in relation to said top wall; and locking member actuating means mounted at the side of said locking member opposite from said top wall for pulling said locking member from said position thereof which is fixed in relation to said top wall toward said locking member actuating means upon energization thereof.
a housing, said housing having a front wall, a rear wall spaced from said front wall and a top wall extending from said front wall to said rear wall;
a keeper pivotally mounted at said front wall for pivotal movement around an axis substantially parallel to said rear wall for movement from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having two lugs thereon extending therefrom toward said rear wall but terminating in spaced relation to said rear wall, said lugs being spaced from each other in the direction of said axis by a predetermined distance;
a locking member mounted in said housing for rectilinear sliding movement substantially parallel to said axis, said locking member being mounted intermediate said front wall and said rear wall and slidably abutting said rear wall, said locking member having two arms spaced from each other by said predetermined distance and extending, respectively, toward one of said lugs, said locking member being slidable between one position and another position, said arms being engageable with said lugs in one position of said locking member to prevent pivoting of said keeper and being out of the paths of movement of said lugs with pivoting of said keeper in the other position of said locking member to permit pivoting of said keeper;
biassing means acting between said locking member and said housing for urging said locking member into a position fixed in relation to said top wall; and locking member actuating means mounted at the side of said locking member opposite from said top wall for pulling said locking member from said position thereof which is fixed in relation to said top wall toward said locking member actuating means upon energization thereof.
8. A strike comprising, a housing with a plurality of walls;
a keeper mounted on said housing for movement from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having at least one lug extending therefrom toward a wall of said housing and movable along a predetermined path in a plane with movement of said keeper;
a locking member slidably mounted on said housing intermediate said keeper and said wall of said housing and movable rectilinearly in the direction transverse to said plane and said predetermined path of movement of said lug, said locking member having means thereon extending transversely to said predetermined path of movement of said lug, said means being engageable with said lug in one position of said locking member relative to said keeper for preventing movement of said keeper and said means being out of the path of movement of said lug when said locking member is in another position relative to said keeper to permit movement of said keeper;
biassing means acting between said locking member and said housing and urging said locking member into one of the relative positions thereof; and locking member actuating means for moving said locking member from the last-mentioned said one relative said position thereof into the other relative position thereof.
a keeper mounted on said housing for movement from a first position to a second position for respectively engaging a latch and moving away from the latch, said keeper having at least one lug extending therefrom toward a wall of said housing and movable along a predetermined path in a plane with movement of said keeper;
a locking member slidably mounted on said housing intermediate said keeper and said wall of said housing and movable rectilinearly in the direction transverse to said plane and said predetermined path of movement of said lug, said locking member having means thereon extending transversely to said predetermined path of movement of said lug, said means being engageable with said lug in one position of said locking member relative to said keeper for preventing movement of said keeper and said means being out of the path of movement of said lug when said locking member is in another position relative to said keeper to permit movement of said keeper;
biassing means acting between said locking member and said housing and urging said locking member into one of the relative positions thereof; and locking member actuating means for moving said locking member from the last-mentioned said one relative said position thereof into the other relative position thereof.
9. A strike as set forth in claim 6 further comprising biassing means acting between said housing and said keeper for urging said keeper into said first position thereof.
10. A strike as set forth in claim 6 wherein said lugs and said arms have interengaging surfaces which lie in planes extending at an angle of less than about 15° to said axis.
11. A strike as set forth in claim 7 wherein in said first position of said locking member said arms are engageable with said lugs.
12. A strike as set forth in claim 7 wherein in said first position of said locking member said arms are out of the paths of movement of said lugs when said keeper is pivoted.
13. A strike as set forth in claim 7 further comprising biassing means acting between said keeper and said housing and urging said keeper into said first position.
14. A strike as set forth in claim 7 wherein said locking member has a magnetic portion adjacent but spaced from said locking member actuating means, wherein said locking member actuating means comprises a pair of wire coils in laterally spaced relation and a pair of magnetic cores, one core within one of said coils and the other core within the other of said coils and wherein said magnetic portion of said locking member extends from adjacent one of said cores to adjacent the other of said cores.
15. A replacement locking member for the strike as set forth in claim 7, said replacement locking member having arms which are positioned on said replacement locking member so that in said one of said positions of said locking member, the last-mentioned said arms are out of the path of movement of said lugs when said keeper is pivoted to permit pivoting of said keeper and that in said other of said positions of said locking member said arms are engageable with said lugs to prevent pivoting of said keeper.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28921688A | 1988-12-23 | 1988-12-23 | |
| US07/289,216 | 1988-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2005906A1 CA2005906A1 (en) | 1990-06-23 |
| CA2005906C true CA2005906C (en) | 1998-06-30 |
Family
ID=23110547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2005906 Expired - Lifetime CA2005906C (en) | 1988-12-23 | 1989-12-18 | Strike with rectilinearly movable keeper |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU620296B2 (en) |
| CA (1) | CA2005906C (en) |
| DE (1) | DE3942379C2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19607684C1 (en) * | 1996-02-29 | 1997-04-30 | Fuss Fritz Gmbh & Co | Electric door opener of adjustable type |
| DE19856624C2 (en) * | 1998-12-08 | 2003-05-15 | Fuss Fritz Gmbh & Co | Electric door opener |
| DE10246666B4 (en) * | 2002-10-07 | 2004-07-22 | Dorma Gmbh + Co. Kg | Electrically operated release device for doors |
| DE10246665C5 (en) * | 2002-10-07 | 2008-04-24 | Dorma Gmbh + Co. Kg | Electrically unlockable release device for doors |
| DE102006001560B4 (en) * | 2006-01-12 | 2008-10-30 | Ist Systems Gmbh | Closed-circuit door opener |
| DE202006007703U1 (en) * | 2006-05-15 | 2007-09-20 | Kfv Karl Fliether Gmbh & Co. Kg | Counter-closing part with swiveling locking plate |
| DE102007018871B4 (en) * | 2006-05-15 | 2020-04-09 | Kfv Karl Fliether Gmbh & Co. Kg | Counter-lock part with swiveling locking plate |
| EP3611316A1 (en) * | 2018-08-13 | 2020-02-19 | Montajes Electronicos Dorcas, S.L. | Lock device |
| DE102019100637A1 (en) * | 2019-01-11 | 2020-07-16 | Simonswerk Gmbh | Magnetic lock and door |
| TWI711754B (en) * | 2019-08-20 | 2020-12-01 | 一德金屬工業股份有限公司 | Latch control equipment matched with lock |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638984A (en) * | 1969-01-13 | 1972-02-01 | Adams Rite Mfg | Electric release strike |
| US3749435A (en) * | 1971-05-21 | 1973-07-31 | Eaton Corp | Electric strike |
| US4056277A (en) * | 1976-10-05 | 1977-11-01 | Unican Security Systems, Ltd. | Electric strike |
| US4088354A (en) * | 1976-10-07 | 1978-05-09 | Litton Systems, Inc. | Door locking mechanism for self-cleaning oven |
| US4471983A (en) * | 1981-07-06 | 1984-09-18 | Square D Company | Compact electric door opener |
| GB2134959B (en) * | 1982-08-28 | 1986-06-25 | Walter Wilson Hugh Clarke | Electrically controlled lock |
| SE442418B (en) * | 1983-04-29 | 1985-12-23 | Anchor Eskilstuna Ab | Apparatus for an electrically releasable deadlock |
| DE3405441C2 (en) * | 1984-02-15 | 1986-09-18 | Fritz Fuss Kg, 7470 Albstadt | Electric door opener |
-
1989
- 1989-12-14 AU AU46748/89A patent/AU620296B2/en not_active Ceased
- 1989-12-18 CA CA 2005906 patent/CA2005906C/en not_active Expired - Lifetime
- 1989-12-21 DE DE19893942379 patent/DE3942379C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3942379C2 (en) | 1998-12-24 |
| AU620296B2 (en) | 1992-02-13 |
| CA2005906A1 (en) | 1990-06-23 |
| AU4674889A (en) | 1990-06-28 |
| DE3942379A1 (en) | 1990-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4984835A (en) | Strike with rectilinearly movable keeper locking member | |
| US5127691A (en) | Strike with rectilinearly movable keeper locking member | |
| CA2005906C (en) | Strike with rectilinearly movable keeper | |
| US5690373A (en) | Electromagnetic lock | |
| EP2372053B1 (en) | High strength electric door strike with gravity fed locking member | |
| US6634685B2 (en) | Electronically-operable door strike with guard clip, springless solenoid and face plate | |
| US3910617A (en) | Solenoid operated electric strike | |
| US4867496A (en) | Electrically operable strike | |
| US4613176A (en) | Door latch mechanism | |
| CA2237500C (en) | Door opener | |
| US3819215A (en) | Electric door opener | |
| US3211850A (en) | Combined lock and switch | |
| US5865483A (en) | Electromechanical locking system | |
| US6857671B2 (en) | Locking device for a door | |
| US3765709A (en) | Door lock mechanism | |
| GB2210659A (en) | Electrically controlled locks | |
| AU2001266260A1 (en) | Locking device for a door | |
| EP0231532B1 (en) | A lock having an external bolt unlocking device | |
| US6595564B1 (en) | Electric door strike having dual locking mechanism | |
| GB2123472A (en) | Electromagnetic lock | |
| EP3109381B1 (en) | Electric strike | |
| WO2002077399A1 (en) | Building security incorporating lock & latch with electric and/or magnetic pathway across lock. | |
| US4061993A (en) | Tripping device for pre-selection of function for electrical equipment | |
| WO1986002690A1 (en) | Device in electrically triggerable striking plates | |
| PL164308B1 (en) | Lock for a protective overcurrent circuit-breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |