EP3743578B1 - Elektrische unter druck arbeitende türöffnerfalle - Google Patents

Elektrische unter druck arbeitende türöffnerfalle Download PDF

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Publication number
EP3743578B1
EP3743578B1 EP19708367.8A EP19708367A EP3743578B1 EP 3743578 B1 EP3743578 B1 EP 3743578B1 EP 19708367 A EP19708367 A EP 19708367A EP 3743578 B1 EP3743578 B1 EP 3743578B1
Authority
EP
European Patent Office
Prior art keywords
strike
rotation
barrel
keeper
door 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.)
Active
Application number
EP19708367.8A
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English (en)
French (fr)
Other versions
EP3743578C0 (de
EP3743578A1 (de
Inventor
Jan Erik HØGLI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elok Lasproduksjon As
Original Assignee
Elok Lasproduksjon As
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Publication date
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Publication of EP3743578A1 publication Critical patent/EP3743578A1/de
Application granted granted Critical
Publication of EP3743578B1 publication Critical patent/EP3743578B1/de
Publication of EP3743578C0 publication Critical patent/EP3743578C0/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0046—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
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0696—Controlling mechanically-operated bolts by electro-magnetically-operated detents locking the bolt by an electromagnet in the striker
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
    • E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors

Definitions

  • This invention relates to locking mechanisms, more particularly to an electrical door strike which tolerates pressure against the door in which it is mounted.
  • the part of a door's open and close mechanism that is positioned in the door frame is called a door strike.
  • This is traditionally shaped as a rigid metal bracket with one or more holes, shaped so that a latch bolt or a dead bolt attached to the door blade can be inserted into them. Since such door strikes do not include any moving parts, the opening mechanism is limited to reside in the door blade itself.
  • This mechanism consists, for example, of a door handle mechanically connected with a latch bolt, or a door knob or a key attached to a bolt.
  • Electrical door strikes differ from common door strikes by acting as an electronic opening mechanism for the door to which they are mounted.
  • This mechanism usually consists of a movable, springloaded, metallic flap, also known as a strike keeper, latch keeper or strike keeper, which can be locked (the door strike is locked) or released (the door strike is released) by an electronic locking mechanism.
  • the door blade is locked to the door strike by, for example, a latch bolt attached to the door blade, being trapped behind the strike keeper. If the latch bolt cannot be opened in other ways, the door will be closed as long as the strike keeper remains in the locked state. To open the door, the strike keeper must be released so that the fall can slip past.
  • the object of the present invention is to provide a compact and inexpensive electrical door strike which releases under pressure.
  • the general embodiment of the invention comprises an electrical door strike which can be manufactured compactly and inexpensively and whose locking mechanism can be released even when the door it is mounted to is put under pressure.
  • the door strike comprises a door strike house, a movable strike keeper which rotates in a movement space about an axis substantially parallel to the longitudinal direction of the door strike and a locking mechanism for the strike keeper.
  • the door strike locking mechanism itself is characterized in that it comprises a barrel in the door strike house, a first movable member, a second rotatable member and a rotational mechanism for rotating the second member.
  • the barrel in the door strike house has a central axis which is substantially parallel to the axis of rotation of the strike keeper, and that it has an opening adjacent the movement space of the strike keeper.
  • the first movable member is placed in the barrel near this opening, while the second member is placed further away from the movement space of the strike keeper than the first member, in a position where it intersects the central axis of the barrel.
  • the first member is shaped like a ball with radius r, while the second member is characterized as being rotatable.
  • the axis of rotation of the second member is normally on and intersects the central axis of the barrel in a point a which lies in a distance I from the said opening of the barrel.
  • the second the member is shaped such that it has an extent in the radial direction from its axis of rotation (i.e. along the central axis of the barrel) which varies gradually with its angle of rotation ⁇ .
  • x is smaller or equal to l at a rotation angle ⁇ 2 and greater than l at a different angle of rotation ⁇ 1 . Consequently, the ball will be forced to stay in a position where it protrudes from the opening of the barrel when the second portion has a rotation equal to ⁇ 1 , while being free to be completely within the barrel at a rotation ⁇ 2 .
  • the strike keeper and thus the door strike are locked in a closed state for a rotation ⁇ 1 , while the strike keeper is open (free to move) at a rotation ⁇ 2 .
  • the invention includes a new type of electrical door strike 1 having an opening mechanism which can be easily released even when under pressure.
  • the electrical door strike (hereinafter called the door strike) comprises a door strike house 2, a movable strike keeper 3 and a strike keeper locking mechanism 4 which can be easily released even when the strike keeper is under pressure.
  • a door strike is shown in figure 1 .
  • the movable strike keeper is attached to the door strike house, and is allowed to rotate in a movement space 5 about an axis 6 which is substantially parallel to the longitudinal direction of the door strike 7.
  • the longitudinal direction of the door strike is here defined in relation to the door frame to which the door strike is mounted, and always corresponds to the direction of the side of the frame where the door strike is mounted.
  • the strike keeper lock mechanism itself is embedded in the door strike house and includes a barrel 8, a first movable member 10, a second rotatable member 11, and a rotary mechanism for rotating the second member (an example of a rotation mechanism is shown in Figure 4 ).
  • the barrel is formed in the door strike house itself, with a central axis 13 running parallel to the axis of rotation of the strike keeper, and with an opening 9 which is adjacent the movement space of the strike keeper.
  • the first movable member 10 is located inside this barrel, close to the said opening, and is shaped like a ball with radius r.
  • the barrel must be shaped so that the center of the ball follows approximately the central axis of the barrel.
  • the second rotatable member 11 is positioned so as to cut off the central axis of the barrel at a greater distance from the movement space of the strike keeper than the extent of the first movable member.
  • the second member may be positioned inside or outside the barrel itself, but must be positioned so that it can come into direct contact with the first member.
  • the second member is positioned so that its axis of rotation 16 is at a right angle to and crosses the central axis 13 of the barrel, at the same time as the member 11 itself intercepts the central axis of the barrel.
  • the intersection between the two axes is defined as point a and lies at a distance l from the said opening, as shown in FIG. 2b .
  • the axis of rotation of the second member will preferably also be at a right angle to the plane of the door blade.
  • the second member has a radial extent 19 from its axis of rotation which varies gradually with its angle of rotation ⁇ . Because this member is positioned such that its axis of rotation crosses othogonally the central axis of the barrel, so its extent along the central axis of the barrel will also vary gradually with ⁇ .
  • the total extent x of the two members from the point a , along the central axis of the barrel when they rest against each other varies with.
  • the angle of rotation ⁇ can therefore determine the position of the first member along the central axis of the barrel.
  • the second member is shaped such that x is smaller or equal to I at an angle of rotation ⁇ 1 ( Fig. 2a ), and greater than l at a second angle of rotation ⁇ 2 ( Fig. 2b ).
  • a rotation angle ⁇ 2 will cause the strike keeper to move freely and the door strike is in the open position, while a rotation angle ⁇ 1 will cause the strike keeper, and consequently the door strike, to be locked.
  • the locking mechanism is closed and opened by controlling the rotation angle ⁇ , and according to the said description can be in two states:
  • the second member In order to open the door strike, the second member is rotated from an angle til ⁇ 1 to an angle ⁇ 2, making it fit inside the barrel for the ball to be pushed into it. Any pressure on the strike keeper will mainly help push the ball into this barrel instead of providing large amounts of unwanted friction in the locking mechanism.
  • the force of the strike keeper against the ball surface will also help to provide a rotation of the ball itself in which the lock is opened. Therefore, since the ball rests against the rotatable portion, it is desirable that the direction of rotation required by the second member is oppositely directed than the direction in which the ball rotates upon opening. In this way, the pressure (from the strike keeper on to the ball) helps to reduce the force required to open the lock.
  • both the inward pressure against the rotatable member and the rotational force on the ball are affected by how far out in the strike keeper's movement space the ball is in the locking position.
  • a functioning balance of these variables will be that between 2/3 and 4/5 of the radius of the ball protrudes into the movement space of the strike keeper.
  • the edge of the strike keeper that go against the ball should be rounded with a convex surface with a radius between 1/4 and 1/10 of the radius of the ball.
  • either the barrel can be formed with a constriction 28 against the movement space of the strike keeper or the strike keeper can be arranged so that it constantly blocks for members of the barrel's mentioned opening.
  • the design of the rotatable member is important. (For example, this can be done by designing the surface of the rotatable member so that the ball can rest on this surface rather than wanting to slide over it).
  • the rotatable member comprises a spherical recess 28 with radius r facing the first movable portion at an angle of rotation ⁇ 2 .
  • the rotable member may in this embodiment have a cylindrical half 29 with radius r and a cylindrical side sector 30 on either side of the recess with radius r / 2.
  • the cylindrical half has a flat sector 31 which spans 1 to 5 degrees adjacent to a side sector (30) at the angle of rotation ⁇ 1 .
  • Locking mechanisms for door strikes will in many applications be opened and closed countless times a day and must therefore be able to withstand wear without the functionality of the locking mechanism failing.
  • the wear itself will mainly pass on the points subjected to strong forces, and in the mentioned invention this is typically at the point of contact between the ball and the barrel, the strike keeper and the ball, as well as between the ball and the rotatable member.
  • the barrel will be shaped as a cylinder with a radius of the order of 5% greater than r . Pressure from the ball towards the barrel will then be distributed on the interior surface.
  • the angular distance between ⁇ 1 and ⁇ 2 is between 60 and 120 degrees, more preferably about 90 degrees.
  • the rotatable member is shaped such that its extent approximately follows the shape of an arkimedian spiral between the angles ⁇ 1 and ⁇ 2 .
  • the pressure created against the rotatable member when the locking mechanism is released will be reduced.
  • the power needed to perform the rotation is also reduced, which gives more flexibility in the choice of driving mechanism.
  • the rotatable member can be driven, either directly by the driving mechanism, or indirectly via a rotary mechanism.
  • the driving mechanism for the rotation mechanism may, in one embodiment of the invention, consist of a motor, while in another embodiment of the invention it may consist of a solenoid.
  • the locking mechanism is driven by a solenoid 32, while the rotation mechanism comprises a rotary plate 33, a actuator arm 34 attached to the solenoid, a rotatable release arm 35, a rotation pin 36 and two stoppers 37, 38 attached to the door strike as shown in fig. 4 .
  • the rotary plate 33 is directly or indirectly rotationally locked to an end 39 of the rotatable member and shaped with two rounded teeth 40 having a U-shaped recess 41 therebetween, as well as a first 42 and a second 43 sector stop.
  • the rotatable release arm is shaped to include a rotation hole 44, a sector stopper 45, a head 47 adapted to the U-shaped recess of the rotary plate, and a carrier opening 46.
  • the carrier opening is adapted to be significantly larger than the pin 49 attached to the solenoid actuator arm 34 so that the solenoid moves a distance before it activates the trigger arm. This is because a solenoid is usually weak at the start of its movement.
  • the release arm 35 is attached to the door strike house via a rotary pin adapted to the rotating hole of the release arm.
  • the rotation of both the rotary plate and the release arm is limited by the two stops attached to the door strike house.
  • the rotary plate stop 37 is adapted to the two sector stoppers of the rotary plate, while the trigger arm stop 38 is adapted to the sector stop of the trigger arm.
  • the rotation of the release arm at the locked position of the strike keeper is limited to a position 48 where the tangent of the contact points between the rotary plate and the release arm is perpendicular to the axis between the point of contact and the axis of rotation of the trigger arm, and where the tangent approximately passes through the axis of rotation of the second rotable member.
  • the rotational forces applied to the second rotatable member when the strike keeper is shaken or attempted to be opened will be stopped by the trigger arm and passed through the rotary pin and the door strike without causing rotation and subsequent opening of the strike keeper.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Insulators (AREA)
  • Discharge Heating (AREA)

Claims (11)

  1. Elektrischer unter Druck arbeitender Türöffner (1) mit einem Verriegelungsmechanismus (4), der umfasst:
    ein Türöffnergehäuse (2)
    ein bewegliches Öffneraufschraubstück (3), das sich rin einem Bewegungsraum (5) um eine Achse (6) dreht, die im Wesentlichen parallel zu der Längsrichtung (7) des Türöffners verläuft,
    einen Öffneraufschraubstück-Verriegelungsmechanismus, der umfasst:
    einen Zylinder (8) in dem Türöffnergehäuse mit einer Mittelachse (13) und mit einer Öffnung (9), die an den Bewegungsraum (5) des Öffneraufschraubstücks angrenzt;
    ein erstes bewegliches Element (10), das wie eine Kugel mit einem Radius r ausgebildet ist, das sich im Inneren des Zylinders nahe der Öffnung (9) befindet;
    ein zweites drehbares Element (11), das so positioniert ist, dass es die Mittelachse des Zylinders absperrt, mit einer Drehachse (16), die im Wesentlichen orthogonal zu der Mittelachse (13) des Zylinders verläuft und diese an einem Punkt α in einem Abstand/von der Öffnung des Zylinders kreuzt, und sich um einen Abstand (19) in einer radialen Richtung von seiner Drehachse erstreckt, der schrittweise mit seinem Drehwinkel ϑ variiert, so dass sich die Gesamterstreckung x der zwei Elemente von einem Punkt α entlang der Mittelachse des Zylinders, wenn sie aneinander anliegen, kleiner gleich l in einem Drehwinkel ϑ2 (offenes Öffneraufschraubstück) ist und in einem anderen Drehwinkel ϑ1 (verriegeltes Öffneraufschraubstück) größer als l ist, und
    einen Drehmechanismus zum Drehen des zweiten Elements, dadurch gekennzeichnet, dass die Mittelachse (13) des Zylinders im Wesentlichen parallel zu der Drehachse des Öffneraufschraubstücks verläuft.
  2. Elektrischer Türöffner nach Anspruch 1, wobei der Zylinder mit einer Verengung (27) gegen den Bewegungsraum des Öffneraufschraubstücks ausgebildet ist, so dass das erste bewegliche Element nicht vollständig aus der Öffnung fallen kann.
  3. Elektrischer Türöffner nach Anspruch 1, wobei das Öffneraufschraubstück Elemente der Öffnung konstant blockiert, so dass das erste bewegliche Element nicht vollständig aus dieser Öffnung fallen kann.
  4. Elektrischer Türöffner nach einem der vorstehenden Ansprüche, wobei das zweite Element umfasst:
    eine kugelförmige Aussparung (28) mit einem Radius r, der dem ersten beweglichen Element in einem Drehwinkel ϑ1 zugewandt ist,
    eine zylindrische Hälfte (29) mit einem Radius r, einem zylindrischen Seitensektor (30) auf jeder Seite der Aussparung mit einem Radius r / 2.
  5. Elektrischer Türöffner nach Anspruch 4, wobei die zylindrische Hälfte einen flachen Sektor (31) aufweist, der 1 bis 5 Grad in einem Drehwinkel ϑ2 an den Seitensektor (30) angrenzend überspannt.
  6. Elektrischer Türöffner nach Anspruch 1, wobei der Zylinder wie ein Zylinder mit einem Radius in der Größenordnung von 5 % größer als r ausgeformt ist.
  7. Elektrischer Türöffner nach Anspruch 1, wobei die radiale Erstreckung des zweiten Elements in etwa einer archimedischen Spirale zwischen den Winkeln ϑ1 und ϑ2 folgt.
  8. Elektrischer Türöffner nach Anspruch 1, wobei der Drehmechanismus durch einen Motor angetrieben wird.
  9. Elektrischer Türöffner nach Anspruch 1, wobei der Winkelunterschied zwischen ϑ1 und ϑ2 zwischen 60 und 120 Grad beträgt, stärker bevorzugt ungefähr 90 Grad.
  10. Elektrischer Türöffner nach Anspruch 1, wobei der Drehmechanismus durch eine Magnetspule angetrieben wird.
  11. Elektrischer Türöffner nach den Ansprüchen 1 und 10, wobei der Drehmechanismus umfasst:
    eine Drehplatte (33), die an einem Ende des zweiten Elements direkt oder indirekt drehverriegelt ist, wobei die Drehplatte zwei abgerundete Zähne (40) mit einer U-förmigen Aussparung (41) dazwischen und einen ersten (42) und einen zweiten (43) Sektoranschlag umfasst,
    einen Betätigungsarm (34), der an einer Magnetspule (32) angebracht ist,
    einen drehbaren Freigabearm (35), der ein Drehloch (44), einen Sektorstopper (45), einen Kopf (47), der an die U-förmige Aussparung (41) der Drehplatte angepasst ist, und eine Trägeröffnung (46), die so ausgelegt ist, dass sie im Wesentlichen größer als der Stift (49) ist, der an dem Magnetspulenträgerarm angebracht ist,
    einen Drehstift, der an dem Türöffner angebracht und an das Drehloch angepasst ist,
    einen Stopper, der an dem Türöffner angebracht und an die beiden Sektorstopper der Drehplatte angepasst ist,
    und einen Stopper, der an dem Türöffner angebracht ist, so dass die Drehung des Freigabearms in der verriegelten Position des Öffneraufschraubstücks auf eine Position begrenzt ist, wobei die Tangente der Kontaktpunkte zwischen der Drehplatte und dem Freigabearm normal (48) zu der Achse zwischen der Kontaktstelle und der Drehachse des Freigabearms verläuft, und die Tangente in etwa durch die Drehachse zu dem zweiten Drehelement verläuft.
EP19708367.8A 2018-01-22 2019-01-22 Elektrische unter druck arbeitende türöffnerfalle Active EP3743578B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20180101A NO344518B1 (no) 2018-01-22 2018-01-22 Elektrisk sluttstykke som åpner under press
PCT/NO2019/000002 WO2019143252A1 (en) 2018-01-22 2019-01-22 Electrical door strike functioning under pressure

Publications (3)

Publication Number Publication Date
EP3743578A1 EP3743578A1 (de) 2020-12-02
EP3743578B1 true EP3743578B1 (de) 2023-11-29
EP3743578C0 EP3743578C0 (de) 2023-11-29

Family

ID=65628808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19708367.8A Active EP3743578B1 (de) 2018-01-22 2019-01-22 Elektrische unter druck arbeitende türöffnerfalle

Country Status (3)

Country Link
EP (1) EP3743578B1 (de)
NO (1) NO344518B1 (de)
WO (1) WO2019143252A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113431433B (zh) * 2021-07-01 2022-08-23 上海欧一安保器材有限公司 锁扣装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056277A (en) * 1976-10-05 1977-11-01 Unican Security Systems, Ltd. Electric strike
US6966585B2 (en) * 2003-12-31 2005-11-22 Jamco Corporation Door lock device
AT507583B1 (de) * 2008-12-05 2010-12-15 Evva Sicherheitstechnologie Sperrvorrichtung
DE102017202376B3 (de) * 2017-02-15 2017-11-16 Geze Gmbh Elektrisch schaltbare Zuhaltevorrichtunq für eine Türanlaqe

Also Published As

Publication number Publication date
WO2019143252A1 (en) 2019-07-25
NO20180101A1 (no) 2019-07-23
NO344518B1 (no) 2020-01-20
EP3743578C0 (de) 2023-11-29
EP3743578A1 (de) 2020-12-02

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