EP3199730A1 - Impact-resistant door opener - Google Patents

Abstract

The invention relates to a impact - proof door opener (1) having a door opener trap (12) mounted in a housing and a remotely operable locking device comprising a spool (22) and a linearly movable plunger (23) about a rotatably mounted locking lever (24) between a blocking position in which the door opener latch (12) is locked and a release position in which the door opener latch is released to switch, wherein the locking lever (24) has two mutually angled lever arms (241, 242), wherein the first lever arm (241) cooperates with the change (13) and the second lever arm (242) protrudes in the direction of a rotatably mounted inertia member. In order to achieve a robust construction and a high security against manipulation, it is proposed that the inertia element (4) is rotatably mounted outside its center of mass and in case of vibrations in the range of movement of the second lever arm (242) or a portion of the second lever arm (242) rotates in and a movement of the locking lever (24) locks in the release position.

Description

The invention relates to a impact-resistant door opener for installation in a door according to the features of the preamble of claim 1.

Such a door opener is from the DE 10 2012 009 067 B3 known. The door opener described there has a cooperating with a change locking lever, which is locked in the locked position against accidental opening. For this purpose, the change to a pin which engages in the locked position in a recess mounted on the door opener housing. This prevents unintentional pivoting of the locking lever due to vibration or impact.

From the DE 10 2004 008 348 B3 is also a safe door opener known. This door opener has an armature, which is designed as a two-armed lever, wherein the two lever arms are arranged in a line to each other and are rotatably mounted in their center of mass. By the mounting of the armature in the center of gravity prevents unintentional pivoting of the armature in the event of vibrations or shocks.

Without effective manipulation protection, there is a risk that a door opener may unintentionally open due to shaking or hard impacts or shocks, thereby allowing unauthorized access to a secured building. In practice, door openers are used with impact protection to ensure a high safety standard even with appropriate manipulation attempts.

Object of the present invention is to provide a shock-proof door opener, which is structurally simple and has a high security against manipulation.

This object is achieved by a door opener with the features of claim 1.

The door opener according to the invention has a rotatably mounted locking lever which cooperates with the change. Further, the door opener comprises a coil which cooperates with the locking lever to actuate this between a locking position in which the locking lever is in abutment with the change, and a release position in which the locking lever is out of attack of the change. It is essential that the locking lever has two mutually angled lever arms, wherein the first lever arm cooperates with the change and the second lever arm protrudes in the direction of an inertia member, wherein the inertia member is rotatably supported outside its center of mass and at vibrations in the range of motion of the second lever arm or a portion of the second lever arm it rotates and locks a movement of the locking lever in the release position. The inertia element thus prevents in case of shock or shock unintentional rotation of the locking lever in the direction release position and thus unauthorized unlocking the door opener.

In case of shocks, or jolts or blows is in conventional door openers the risk that the locking lever automatically or due to its inertia in the direction of release position rotates. In the door opener according to the invention, the locking lever is held by a stop of the inertia member on the locking lever in the locked position. This prevents the locking lever from disengaging from the change or leaving the blocking position.

The door opener may in particular be designed as a draft door opener, i. in the de-energized state, the door latch is locked. That without energizing the coil, the locking lever is in the locked position. The door opener is unlocked by energizing the coil to switch the lock lever from the lock position to the release position.

In one embodiment, it can be provided that the two lever arms of the blocking lever extend at an angle to one another such that they have a smaller inner angle and a larger outer angle. In particular, it is provided that the inertia element is arranged in the inner angle or a space bounded by the inner angle. For example, the two lever arms of the locking lever can be arranged at right angles to each other. In this case the inside angle is 90 ° and the outside angle is 270 °. By the inertia element is arranged in the inner angle, this space, which, so to speak, between the two lever arms of the Lock lever is used optimally and thus reduces the size of the door opener.

Preferably, it can be provided that the inertia element has a locking tooth or a locking cam, which cooperates to lock the locking lever with a locking contour of the locking lever, preferably by the locking contour of the locking lever rests with locked locking lever on the locking tooth. The ratchet tooth may be formed integrally with the inertia element. In particular, the ratchet tooth has a tapered contour, wherein the tip is directed in the direction of the locking lever or the second lever arm of the locking lever.

In particular, it is provided that the inertia element has a neutral position, in which the inertia element and / or the locking tooth is arranged outside the range of movement of the locking lever. To ensure that the moment of inertia is normally in the neutral position, the inertia element can be acted upon by a spring in the direction of its neutral position.

It is preferably provided that the pivoting circle of a corner point of the blocking contour of the locking lever does not intersect with the locking tooth when the inertia element is in its neutral position. This ensures that in the neutral position of the inertia element, ie when no shocks or shocks act on the door opener, the locking lever can move without being affected by the inertia element in the release position.

In an advantageous embodiment, it may be provided that the inertia element is rotatably mounted such that upon shocks or impact tests of the ratchet pivots into the pivoting circle of the corner point of the locking contour of the locking lever. When pivoted inertia element, the locking lever can not be transferred from its locking position to the release position, since the locking tooth of the inertia member bears against the locking contour of the locking lever and thus prevents pivotal movement of the locking lever.

To ensure that the rotational movement of the inertia element takes place in a short time and reliably as a result of vibrations or impact tests, it is provided in one embodiment that the moment of inertia of the inertia element is smaller than the moment of inertia of the locking lever. Due to the smaller moment of inertia, the inertia element experiences a higher rotational acceleration with the same force and thus turns much faster than the locking lever. This ensures that the inertia element is already within the pivoting circle of the locking contour of the locking lever before it can reach the release position. The moment of inertia depends on the mass distribution with respect to the axis of rotation. It indicates the resistance of a rigid body to a change in its rotational motion about its axis of rotation.

The inertia element may be made of a metal, for example of an aluminum alloy or of die-cast zinc or a plastic.

In order to provide a particularly secure impact protection for the door opener according to the invention in one embodiment, this can several Impact safety elements include to prevent inadvertent movement of the locking lever in the release position.

In one embodiment, for example, be provided that the door opener in addition to the inertial element still has a safety stop to prevent unauthorized release of the bill.

For example, it can be provided that the door opener has a locking device comprising a coil and an operable by this linearly movable plunger, which cooperates with the locking lever such that this on the coil-actuated plunger between a locking position in which the locking lever with the change in Stop is, and a release position in which the locking lever is out of turn of the changeover is switchable, and that the second lever arm in the locked position cooperates with a coil actuated by the safety stop to prevent release of the change.

In order to achieve a compact construction of the door opener, it can be provided in one embodiment that the second lever arm has a first portion which cooperates with the coil actuated by the backup stop, and has a second portion which cooperates with the inertia member.

A space-saving design can provide that the locking lever is arranged in the door opener housing in a first plane and the inertia element is arranged in a second plane parallel to the first plane such that the locking tooth of the inertia member projects into the first plane.

In particular, it may be provided in one embodiment that the inertia element and the locking lever are arranged in the door opener housing such that the axis of rotation of the inertia element and the axis of rotation of the locking lever are parallel. Alternatively, it can also be provided that the axis of rotation of the inertia element and the axis of rotation of the locking lever are perpendicular to each other. In order to prevent an opening of the door opener during impact tests or vibrations, it must be ensured that vibrations in the direction of travel of the tappet can not lead to an opening of the door opener. For this purpose, an arrangement is necessary in which the axis of rotation of the rotary element is not arranged parallel to the direction of movement of the plunger. It is advantageous if the axis of rotation of the rotary member is arranged perpendicular to the direction of travel of the plunger.

In one embodiment it can be provided that the safety stop for locking the locking lever protrudes into the range of movement of the second lever arm and thereby prevents pivoting of the locking lever. Furthermore, it can be provided that the coil acts on the securing stop in order to move it out of the movement range of the second lever arm during the switching of the blocking lever from the blocking position into the release position. The safety stop thus locks the locking lever already in the de-energized state of the door opener, without further action is required. This already ensures good protection against manipulation attempts as a result of shocks or shocks. In practice, it has been shown that this protection alone is not sufficient, because at a certain frequency or sequence of shocks or blows emigration of the safety stop can not be prevented. For this case is one additional assurance provided by the inertia element. As a result of manipulation attempts by hitting or shaking, the inertia member rotates into the range of movement of the locking lever and prevents it from being moved to the release position, even if the safety stop has already emigrated from the locked position as a result of the impacts or shaking. Through the combination of the two security elements, so on the one hand the inertia element and on the other hand the security stop, a door opener is achieved with a very high security against manipulation.

The locking lever can be designed as an armature, in particular as a magnetic armature and interact magnetically directly with the coil. In another embodiment, the coil can move an actuating element, for example a plunger, in order to actuate the locking lever.

In one embodiment, it can be provided that the coil is energized to unlock the door opener and the plunger is moved by the coil in the direction of the first lever arm of the locking lever and this entrains. The locking lever rotates so far that it comes out of engagement with the change, ie in the release position. The coil also actuates the safety stop with the plunger so that it is ensured that the locking lever can be switched to the release position. The safety stop is designed as a movable safety stop. It is moved out of the range of movement of the locking lever when unlocking the spool. By the same coil actuates both the safety stop and the linearly movable plunger, it is prevented that it can malfunction by the locking lever can not be switched by the coil in the release position, because the backup stop is still effective by mistake.

It is preferably provided that the locking lever cooperates with a spring and is acted upon by the spring in the blocking position. The safety stop is provided as an additional safeguard, should the force of the spring no longer be sufficient to hold the locking lever in the locked position as a result of shocks. To lock the door opener, the coil is de-energized. The locking lever is then rotated by a spring in its locked position, thus blocking the change or the door latch.

In particular, it can be provided that the securing stop protrudes in the blocking position into the range of movement of the locking lever, in particular of the second lever arm and thereby prevents pivoting of the locking lever. The locking lever is rotatably mounted. When switching the locking lever in the release position of this covers a certain range, the range of movement of the locking lever. The safety stop protrudes in the blocking position in this movement range in such a way that pivoting of the locking lever is prevented by the safety stop blocks the path of the locking lever. To switch the locking lever in the release position, the coil actuates the safety stop so that it is moved out of the range of movement of the locking lever out. In particular, it can be provided that the coil acts on the securing stop in order to move it out of the movement range of the second lever arm during the switching of the blocking lever from the blocking position into the release position.

Protruding into the range of motion means that in particular there is no adhesion between the safety stop and the locking lever. Preferably, the safety stop loosely abuts against the second lever arm of the locking lever. Loose abutment means that there is loose contact between the safety stop and the second lever arm, or that the safety stop is spaced from the second lever arm so that there is a gap or some play between the safety stop and the second lever arm. In this way, jamming of the door opener is reliably prevented. Even with high preload is thus ensured that the locking device without problems between the release position and the locking position can be switched.

In particular, it can be provided that the second lever arm protrudes freely in the direction of the plunger. That the second lever arm extends from the first lever arm in the direction of the plunger, without being applied to the plunger. The free canting can be done by the second lever arm extending obliquely from the first arm in the direction of the plunger and / or the safety stop or by the second lever arm, starting from the first lever arm parallel to the plunger and in the region of its free end in Direction is bent towards the plunger and / or has a stop cam. Preferably, the first lever arm is fixedly connected to the second lever arm, in particular integrally formed.

In an alternative embodiment it can be provided that the safety stop is arranged on the plunger. Preferably, the securing stop may be formed as a securing ring, which is mechanically connected to the plunger and a larger diameter than the Tappet has. In particular, the securing stop is arranged in the region of the free tip of the tappet. In the blocking position, the tip of the plunger is arranged with the securing stop outside the coil or outside of the bobbin. The safety stop is in a position that projects into the range of movement of the locking lever. This effectively prevents inadvertent switching of the lock lever from the lock position to the release position. It can be provided that the securing stop or the securing ring is a part of the plunger or that the plunger is integrally connected to the securing ring. The safety stop can also be designed as a separate part, for example as a plastic ring or metal ring, which can be placed on the plunger and connected by a mechanical connection with the plunger.

It is preferably provided that the securing stop has a stop surface which is separated in the blocking position by an air gap of the second lever arm and comes in contact with the second lever arm in shock. It is thereby achieved that the plunger itself has the securing stop or that a portion of the plunger is designed as a securing stop. The air gap can be in the range between 0.1 mm and 5 mm. By the movement of the plunger as a result of the energization of the coil of the backup stop is automatically moved and moved out of engagement with the range of movement of the locking lever. At the same time the locking lever is switched from the locking position to the release position.

In one embodiment, it can be provided that the securing stop has a stop surface with a toothing, which, at least in the event of vibrations, forms a toothing arranged on the second lever arm engages to prevent movement of the plunger towards the release position. Preferably, the toothing of the second lever arm and / or the toothing of the plunger may be formed as a saw toothing. The saw toothing results in a secure blocking of the plunger and at the same time prevents the toothing from becoming irreversibly caught.

In order to realize a compact design of the door opener can be provided that the plunger is longer than the longitudinal extent of the coil and passes through the interior of the coil or the bobbin in the axial direction. The plunger may have at its end remote from the locking lever a collar whose diameter is greater than the inner diameter of the coil or of the bobbin. The plunger is stored, so to speak, inside the coil or inside the bobbin. That the interior of the coil or bobbin has a recess or bore in which the plunger is received. The collar of the plunger serves as a stop for the bobbin and limits its lifting movement. Since the diameter of the collar is greater than the inner diameter of the coil, the collar comes into contact with the coil or the bobbin. Inner diameter of the coil or the bobbin here denotes the inside diameter of the recess or the bore of the coil or of the bobbin.

In order to further improve the impact protection of the door opener, it may be provided in one embodiment that the plunger has a limit stop which abuts in the blocking position on the coil or a bobbin and that either the limit stop is formed from an elastomer or has an elastomeric element,
and / or that an elastomer element is arranged between the limit stop and the coil or the bobbin,
and / or that the coil is connected to the housing via an elastomeric bearing.

In practice, it has been found that in case of shocks and / or vibrations of the door opener housing either the housing itself or components of the door opener mechanism mounted in the housing are set in vibration. Due to these oscillations, oscillation peaks can occur between adjoining components which add up to motion impulses and as a result of which uncontrolled movements of individual movably mounted components can occur. For example, it may happen that receives an impulse towards the release position by the vibrations of the plunger of the coil and thereby the door opener may be unlocked accidentally. By the elastomeric element such vibrations or movement pulses are damped and / or suppressed. Due to its elastic properties, the elastomer element absorbs such vibration peaks and ensures that it can not unintentionally come to a displacement of the plunger from the locked position to the release position.

By elastomeric element is meant a damping component, which consists for example of a rubber or a rubber. As the rubber, for example, a vulcanized natural rubber or a vulcanized silicone rubber or an industrially manufactured rubber, for example, a butyl rubber (IIR) or polyurethane rubber (AU, EU) can be used. Of course, other elastomeric materials can be used.

In one embodiment, it is provided that the plunger is slidably mounted in the coil or the bobbin. The plunger is acted upon by a return spring and is spring loaded in the locked position with its limit stop on the coil and / or the bobbin. The limit stop limits in particular the immersion depth of the plunger in the coil or in the bobbin. For an impact protection can be provided that either the limit stop itself is formed of an elastomer or that the limit stop comprises an elastomer. Alternatively or additionally, it may be provided that an elastomer element is arranged between the limit stop on the one hand and the coil or the bobbin on the other hand. In this case, it is a separate elastomeric element which acts as a damping element to suppress vibration impulses transmitted from the coil and / or bobbin to the plunger. Alternatively or additionally, it may be provided that the coil is connected to the door opener housing via an elastomeric bearing in order to prevent vibrations or vibration peaks being transmitted from the door opener housing to the coil and thus to the plunger.

In one embodiment, it may be provided that the limit stop is arranged on the plunger, preferably that the limit stop is designed as a nose connected to the plunger or as a circlip surrounding the plunger.

Preferably, the elastomer element may be formed in one embodiment as an elastomeric ring whose inner diameter is greater than the outer diameter of the plunger. In particular, the elastomer element may be formed as a disc with an inner hole, or as an O-ring. The pestle passes through the inner hole of the elastomeric element. By the inner diameter of the elastomeric element is greater than the outer diameter of the plunger, at least as the outer diameter of the plunger in this area, it is prevented that between the elastomeric element and the plunger friction forces occur, which could adversely affect a movement of the plunger.

It can further be provided that the elastomeric element, preferably the elastomeric ring, is fastened either to the coil or to the bobbin or to the limit stop.

For ease of installation and / or maintenance can be provided that the limit stop on the plunger is held exchangeable.

Limit stop and / or the plunger may be formed of a relatively hard material, such as a metal or a hard plastic. This allows high mechanical strength and precise manufacturing. However, such a hard material is susceptible to the transmission of pulse peaks. By the elastomeric element, which is arranged between a contact surface of the limit stop and the coil or the bobbin, an effective damping of vibration peaks or pulse peaks is made possible.

The elastomer element may be provided in particular in addition to the inertia element and / or the safety stop as a further impact protection element.

In the figures and in the following description of the figures embodiments of different door openers are explained in detail. The door openers shown have advantageous features and constructive solutions that, unless they relate to the execution of the invention, can be combined with the inventive design.

Fig. 1:

Eine schematische Ansicht des erfindungsgemäßen Türöffners an einer Tür,

Fig. 2a, 2b:

eine schematische Ansicht eines Ausführungsbeispiels eines Türöffners mit einem als Sicherungsstift ausgebildeten Sicherungsanschlag,

Fig. 3a, 3b:

eine schematische Ansicht eines Ausführungsbeispiels eines Türöffners mit einem Sicherungsanschlag mit verzahnter Oberfläche,

Fig. 4a, 4b:

eine schematische Ansicht eines Ausführungsbeispiels eines Türöffners mit einem am zweiten Hebelarm gelagerten Blockierelement,

Fig. 5a, 5b:

eine schematische Ansicht eines Ausführungsbeispiels eines Türöffners mit einem am Kragen des Stößelkörpers gelagerten Blockierelement,

Fig. 6a, 6b:

eine schematische Ansicht eines Ausführungsbeispiels eines Türöffners mit einem am Stößelkörper gelagerten Blockierelement;

Fig. 7a bis 7d:

eine schematische Ansicht eines Ausführungsbeispiels des erfindungsgemäßen Türöffners.

Showing:

Fig. 1:

A schematic view of the door opener according to the invention on a door,

2a, 2b:

a schematic view of an embodiment of a door opener with a safety pin designed as a safety stop,

3a, 3b:

a schematic view of an embodiment of a door opener with a safety stop with toothed surface,

4a, 4b:

a schematic view of an embodiment of a door opener with a second lever arm mounted on the blocking element,

5a, 5b:

a schematic view of an embodiment of a door opener with a mounted on the collar of the plunger body blocking element,

6a, 6b:

a schematic view of an embodiment of a door opener with a blocking element mounted on the plunger body;

FIGS. 7a to 7d:

a schematic view of an embodiment of the door opener according to the invention.

In the individual figures, the door opener 1 is partially shown in different configurations. The basic structure of the door opener 1 is identical in the individual embodiments. In the figures and the description of the figures, identical reference symbols are used for the same components.

Fig. 1 shows a schematic representation of a building door 9. The building door 9 comprises a door frame 91 and on the door frame 91 via hinges 92a and 92b rotatably mounted door leaf. The door leaf 93 has a lock 94. To make the door, the lock 94 can be opened via a door handle 942 or a key. A firing latch 941 is mounted in the lock 94. In the area of the door frame 91, the door opener 1 according to the invention is mounted opposite the lock 94. The door opener 1 comprises a door opener housing 11 with a pivotally mounted door opener latch 12. In the closed position, the latch 941 engages in a latch receiving space of the door opener 1 and cooperates with the pivotable door opener latch 12. The released door opener latch 12 is free to pivot about its longitudinal axis. This makes it possible to open the door 93 without operating the door handle. The latch 941 acts on a blocking surface of the door latch 12 and pivots it when opening the door.

When locked door latch 12 this is fixed and can not swing. In the closed position of the door leaf, the latch 941 cooperates with a blocking surface of the pivoting latch and abuts against it. That the door leaf 93 is locked in its closed position by the door latch latch and can not be opened. Only after retraction of the latch 941 in the door lock, for example by pressing the door handle or after unlocking the door latch 12, the door 93 can be opened.

The in the Figures 1 to 7c illustrated door opener 1 has the construction described below in all the embodiments shown. A door opener housing 11 supports a pivotable door opener latch 12. A locking device 2 arranged in the door opener housing interacts with the door opener latch 12 via a rotatably mounted change 13 in order to release or lock it. The locking device 2 comprises an armature or a locking lever 24, which cooperates with the change 13 and actuated by a solenoid 21, that is, switched between a release position and a blocking position. The armature or the locking lever 24 together with a spring 24 f, which acts on the locking lever 24 in the release position. The solenoid 21 comprises an electric coil 22 and a linearly movable from the coil plunger 23. The coil 22 is wound on a bobbin 22k, which has a bore in its center, in which the plunger 23 is guided linearly displaceable.

The plunger 23 has a plunger body 232 and a plunger tip 233. The plunger body is formed as a coil core and holds at one end the plunger tip 233. The plunger body is ferromagnetic and is driven by the coil 22 in the axial direction. Via a return spring 26, the plunger 23 is acted upon in the locking position. Of the Plunger body 232 has a larger diameter than the plunger tip 233. The plunger body 233 is guided positively in the coil 22 and in the bobbin 22k and can be moved in the axial direction.

In the locked position, the armature of the door opener or the locking lever 24 is in abutment with the change 13. The change 13 is blocked by the locking lever 24 and thus prevents pivoting of the door latch 12. The locking lever 24 has two lever arms 241, 242. The two lever arms 241, 242 are integrally formed and therefore firmly connected. The first lever arm 241 interacts directly with the change 13. The second lever arm 242 extends at right angles to the first lever arm 241. The locking lever 24 is rotatably supported via a rotation axis 24a in the door opener housing. The axis of rotation 24a is located in the region of the intersection between the first lever arm 241 and the second lever arm 242.

The locking of the door opener latch or the change 13 takes place by a rotatably mounted on the first lever arm 241 via a bearing pin 245 roller 244 rests on a support 132 of the change 13. As a result, pivoting of the change 13 is prevented and fixed. The roller 244 reduces the frictional forces between the change 13 and locking lever 24, so that even with a high preload a switching of the locking lever 24 without jamming is possible. The locking lever 24 is acted upon by a spring 24 f, the locking lever 24 in the in the Fig. 2a shown blocking position urges.

Hereinafter, individual embodiments of the door opener 1 will be described. The different embodiments each differ only by the described different components.

In the FIGS. 2a and 2b an embodiment of the door opener 1 in the region of its locking device is shown in an enlarged sectional view. It is an embodiment of the door opener 1, in which the locking device 2 has a safety stop 25, which is designed as a linearly movable locking pin 251. The locked position of the door opener is in the Fig. 2a shown. The Fig. 2b shows the release position, the change of clarity is not shown.

In order to secure the locking lever 24 in the locked position against vibrations, a locking device is provided which has an axially displaceable locking stop 25. The second lever arm 242 of the locking lever 24 projects freely in the direction of the securing stop 25.

The securing stop 25 is designed as a securing pin 251. The locking pin 251 is received in a recess of the bobbin 22k and is by a spring 25f out of the bobbin 22k out and in the range of movement of the locking lever 24 pressed. The locking pin 251 is slidably mounted parallel to the plunger 23.

Like in the FIG. 2a is illustrated, the safety stop 25 forms a one-sided stop surface for the locking lever 24 and the second lever arm 242 from. That is to say the locking lever 24 or its second lever arm 242 has a contact zone which, upon rotation of the locking lever, comes into contact with the locking pin 251 as a result of vibrations or impacts. In the in the Fig. 2a shown blocking position, the second lever arm 242 only a loose contact with the locking pin 251 and is arranged at a small distance parallel to this. Only when correspondingly strong shocks or impact tests of the locking lever 24 begins to rotate about its axis of rotation 2a, the second lever arm 242 comes into contact or in firmer contact with the locking pin 251. The locking pin 251 prevents the locking lever 24 continues in Direction release position can rotate. This ensures that even when shaken or tampering attempts the locking lever 24 is fixed or secured in its locked position and the door opener latch 12 is blocked

In the Fig. 2b the release position of the door opener 1 is shown. To switch the door opener latch 12 to the release position, the coil 22 is energized. As a result of the energization, a magnetic field builds up around the coil, which on the one hand moves the plunger 23 in the direction of the blocking lever and, on the other hand, pulls the blocking pin 251 into the coil body 22k. The locking pin 251 is mounted in the bobbin at a small distance and parallel to the plunger tip 233. In a vertical projection of the lifting magnet 21 is the locking pin 251 adjacent to the plunger tip 233 and within a cross-sectional area of the plunger body 232. The plunger body 232 has in the region of its front end a recess into which the locking pin 251 can engage. Thus, a particularly compact construction of the door opener 1 is achieved. The plunger 23 is with its plunger tip 233 in direct contact with the first lever arm 241 and has rotated the locking lever about the rotation axis 24a so far that it is out of abutment with the change 13. That is, the change 13 can rotate and thus releases the door opener latch 12. That is, the door latch can be pivoted about its longitudinal axis.

In order to lock the door opener 1 again after release, the current flow to the coil 22 is switched off. Then both the change 13 and the locking lever 24 via springs in the in Fig. 2a transferred shown blocking position. In addition, the plunger 23 by the plunger return spring 26 to the left in the in Fig. 2a moved position shown. In addition, the locking pin 251 is pushed out of the bobbin 22 k via the spring 25 f and secures the locking lever 24 in its locking position.

In the FIGS. 3a and 3b another embodiment is shown. This embodiment differs in particular in that the securing stop 25 is designed as a securing ring 252 and is connected to the plunger 23. The Fig. 3a shows the normal lock position. In the Fig. 3b the lock position is shown in case of vibrations.

The securing ring 252 is arranged in the region of the plunger tip 233 outside of the bobbin 22k or outside of the lifting magnet 21. The locking ring 252 is located as in the Fig. 3a is shown with a small distance from the second lever arm 242 opposite. The second lever arm 242 has in the region of its free end on a stop which cooperates with the securing stop 25 and the locking ring 252. Between the locking ring 252 and the second lever arm 242 of the locking lever 24 is an air gap. The air gap is about 0.1 mm to 5 mm.

In a tampering or impact test, the locking lever 24 moves about the axis of rotation 24a. In this case, the locking lever 242 comes into contact with the locking ring 252, as in Fig. 3b is shown. Another turn the locking lever 24 toward the release position is not possible. Even in this slightly rotated position is how out Fig. 3b can be seen, the locking lever 24 into abutment with the change 13. The arranged in the stop roller 244 still covers the support 132 of the change 13 and fixes this. As a result, remains in a Aufschlagversuch the pivot latch 12 of the door opener in the locked position.

In the FIGS. 3a and 3b In addition, a blocking device 3 is shown. This includes two toothed surfaces that engage each other to block the plunger. Circlip 252 has a serrated surface 253z. Also, the abutment surface 243z of the second lever arm 242 has a serrated surface. Like in the Fig. 3b is illustrated, the serrated surfaces 243z and 253z engage in a tampering attempt. As a result, a displacement of the plunger 23 is effectively blocked. In a Aufschlagversuch is thus prevented that the plunger 23 can be moved in the direction of the lever 241. By this additional blocking of the plunger 23 in the release position additional security against manipulation is achieved.

In the FIGS. 4a and 4b Another variant of the door opener 1 is shown. The FIG. 4a shows the normal lock position. The FIG. 4b shows the locked position in a tampering attempt. In this variant, the locking device 2 also has a plunger 23 disposed on the locking ring 251, which serves as a safety stop 25 to the locking lever 24 in the in the Fig. 4a keep locked position shown. Further, a blocking device 3 is provided which holds the plunger 23 in its locking position. The blocking device 3 has a blocking element 31t, which is rotatably mounted on the second lever arm 242 of the locking lever 24. The Pivot bearing of the blocking element 31t has an axis of rotation 31a, which runs parallel to the axis of rotation 24a of the locking lever 24. Via a spring 34b, the blocking element 31t is normally in the in Fig. 4a Lock position shown held out of engagement with the plunger 23.

In a tampering attempt, i. in case of impacts or as a result of strong vibrations, the blocking element 31t rotates into the range of movement of the plunger 23 due to its inertia. If the plunger 23 now moves in the direction of the first lever arm 241 due to impacts or vibrations, it comes into contact with the blocking element 31 t, which effectively prevents further movement of the plunger 23. At the same time, the second lever arm 242 with its stop surface 243 in abutment with the locking ring 252 and prevents the locking lever 24 can be rotated in the direction of the release position. Thus, the door opener 1 has an impact protection device with two securing devices, namely the securing device 2 and the blocking device 3.

In the FIGS. 5a and 5b another embodiment of the door opener 1 is shown. The safety device 2 comprises, as in the embodiment described above FIGS. 4a and 4b , a arranged in the region of the tip of the plunger 23 circlip 252, which cooperates to secure the locking lever 24 in its locking position with a arranged in the region of the free end of the second lever arm 242 stop surface 243. Upon shock, the stop surface 243 comes into contact with the locking ring 252 and effectively prevents pivoting of the locking lever 24 in the direction of the release position.

Furthermore, the door opener 1 comprises a blocking device 3 with a blocking element 42m, which is arranged on the collar 231 of the tappet body 232. The blocking element is mounted on the peripheral surface of the collar 231 in a recess. The blocking element 32m is acted upon by a spring in the direction of the change 13 and engages in the locking position in a recess 131 of the change 13 a. As a result, the plunger 23 is blocked in the locked position by the change 13. About the blocking element 32m so the plunger 23 in his in the Fig. 5a Lock position shown held and secured against unintentional extension in the direction release position.

To spend the locking lever 24 in the in the Fig. 5b shown release position, the coil 22 is energized. As a result of the magnetic field built up by the coil 22, the blocking element 32m is attracted and pivots into the collar 231 of the plunger body 232. As a result, the blocking element 32m comes out of engagement with the change 23 or the recess 131 of the change. The blocking element 32m is magnetically actuated. For this purpose, the blocking element 32m may be formed of a ferromagnetic material or have a permanent magnet.

The plunger 23 can move in energized coil 22 in the axial direction of the locking lever 24. At the same time, the plunger 23 takes along the securing stop 25 and moves it out of the range of movement of the blocking lever 24. This has the consequence that the locking lever 24 about the rotation axis 24a in the in Fig. 5b can rotate shown release position. The rotation of the locking lever 24 is finally carried out by the plunger 23 and the plunger tip 233 comes into contact with the first lever arm 241 and thereby moves the first lever arm 241 in a clockwise direction. This will be the Locking lever 24 is pivoted about the axis of rotation 24 a and the stop formed by the roller 244 and the support of the change 13 is canceled.

In the Figures 6a and 6b another embodiment of the door opener 1 is shown. Unlike in the FIGS. 5a and 5b illustrated embodiment of the blocking device 3, here the blocking element 33m is not arranged on the collar 231 of the plunger body 232. The blocking device 3 instead has a blocking element 33m which is rotatably mounted directly on the plunger body 232 in a recess. Via a spring 34a, the blocking element 33m out of the plunger body 232, ie in the in the Fig. 6a shown locked position. In the blocking position, the blocking element 33m engages behind an edge 22a arranged on the coil 22 or in the bobbin 22k. As a result, the blocking element 33m blocks movement of the plunger 33 in the direction of the locking lever 24. The blocking element 33m is actuated magnetically. For this purpose, the blocking element 33m may be formed of a ferromagnetic material or have a permanent magnet.

To switch the door opener 1 in the release position, the coil 22 is energized. About the built-up of the coil 22 magnetic field, the blocking element 33m is pivoted into the plunger body 232 and comes out of engagement with the locking edge 22a. Now, the plunger 23 can extend due to the magnetic force of the coil 22 in the direction of the locking lever 24 and pivot about the axis of rotation 24 a. To lock the door opener 1, the energization of the coil 22 is turned off. After switching off the flow of the plunger 23 is returned by the return spring 26 in the in the Fig. 6a moved shown locking position. At the same time the locking lever 24 and / or the change 13 is urged by spring force in the locked position to the case 12 to To block. Also, the blocking element 33m is pushed out of the plunger body 23 due to the spring force and comes again into engagement with the blocking edge 22a. As a result, the plunger 23 is fixed again. By the securing device 2, which comprises a arranged in the region of the plunger tip 233 circlip 52 which is arranged in the movement range of the second lever arm 242, the locking lever 24 is secured in the locked position.

In case of shock or impact tests, arranged on the lever arm 242 stop surface 243 comes into contact with the stop surface 253 of the locking ring 252. This prevents pivoting of the locking lever 24 toward the release position and the door latch 12 remains securely locked even in tampering attempts.

In the FIGS. 7a to 7d a variant of the door opener 1 according to the invention is shown. It is an embodiment, which on the in the FIGS. 3a and 3b illustrated embodiment based. In addition to those in the FIGS. 3a and 3b shown door opener has in the FIGS. 7a to 7d Door opener shown an elastomeric element 27 which is disposed between the coil 21 and the bobbin and the securing stop 25 on the plunger 23. The elastomer element 27 is formed as an O-ring and dampens the stop between the bobbin and the safety stop 25th

Next, in the FIGS. 7a to 7d shown door opener 1 an inertia member 4, which is rotatably mounted on the door opener housing or the Spulenjoch via a rotation axis 42. At its, the second lever arm 242 of the locking lever 24 facing the end, the inertia member 4 has a locking tooth 41. The locking tooth 41 corresponds with a locking contour 246, which is formed on the second lever arm 242 of the locking lever 24.

In the FIGS. 7a to 7c each different positions of the door opener 1 are shown in a sectional view from the front. The FIG. 7d shows a perspective view of the door opener 1 from the opposite direction. How out FIG. 7d it can be seen, the inertia element 4 is acted upon by a spring 44 in a neutral position.

The neutral position of the inertia element 4 is in the Figure 7a shown. The inertia element 4 has a substantially quadrangular outer contour, wherein the outer edges of the inertia element 4 extend in the neutral position substantially parallel to the outer edges of the two lever arms of the locking lever 24. At the second lever arm 242 of the locking lever 24 facing outer edge, the inertia member 4 has a locking tooth 41 and locking cam 41 on. The locking tooth 41 has a tip which points in the direction of the second lever arm 242. At the second lever arm 242 a locking contour 246 is formed.

In the in the Figure 7a shown neutral position of the inertia element 4, the new ratchet 41 is arranged offset relative to the locking contour 246. That is, the ratchet 41 is not in the range of movement of the locking contour 246 and the locking lever 24. A movement of the locking lever 24 is not prevented in the neutral position of the inertia member 4 by this.

In the FIG. 7b the door opener is shown during a service attempt or manipulation attempt. The inertia element 4 has due rotated by vibrations from the neutral position counterclockwise. At the same time the locking lever is acted upon in the direction of its release position. However, this movement is prevented by the locking contour 246 resting against the locking tooth 41. The ratchet 41 forms, as it were, a stop for the locking contour 246.

The dimensions of the inertia element or the locking tooth 241 and the locking contour 246 are dimensioned such that in the in FIG. 7b represented blocked by the inertia member 4 position of the locking lever of this blocking the change continues. The roller 244 of the locking lever 24 is still engaged with the support 132 of the change 13, so that the change is locked. As a result, unintentional release of the change 13 and thus the door opener trap is reliably prevented.

FIG. 7c shows the door opener 1 with energized coil 22, ie with properly unlocked change 13. The locking lever 24 was acted upon by the plunger 23 moved to its release position. The roller 244 of the locking lever 24 is now out of engagement with the support 132 of the change 13. D. h. the change 13 is unlocked and the latch of the door opener can be swiveled FIG. 7c can be seen, the locking contour 246 of the second locking lever 224 moves when targeted unlocking it door opener along a circular path which is offset from the locking tooth 41 of the inertia member 4. This means that the inertia element 4 in its neutral position does not affect the release of the door latch.

Simultaneously with the energization of the coil 22, the plunger 23 is moved together with the arranged on the plunger 23 securing stop 25 in the direction of the first lever arm 241 of the locking lever 24. Here comes the Locking stop 25 disengaged from the teeth 243z, which is arranged at the outer end of the second lever 242 of the locking lever 24. That is, the backup stop 25 is automatically moved out of the range of movement of the locking lever 24 when energizing the coil 22 and releases it.

How out FIG. 7d it can be seen, the inertia element 4 is rotatably mounted with its axis of rotation 42 on the coil yoke 22. The locking lever 24 is also rotatably mounted in the door opener housing with its axis of rotation 24a. The two axes of rotation 24a and 42 of the locking lever 24 and the inertia element 4 thus run parallel to each other. About a stored in the door opener element for rotation limitation 44 of the rotational range of the inertial element 4 is limited. This means that the inertia element 4 is no further than the one in the FIG. 7b can rotate shown position. This prevents an undesired blockage of the locking lever 24 can occur due to a possibly too large rotation of the inertia element 4.

The inertia element 4 is normally in its neutral position as in FIG Figure 7a shown. Only because of shocks or blows, the inertia element 4 rotates about its axis of rotation 42. Since the inertia element 4 is mounted outside of its center of mass, acts on the inertia element 4 due to its inertia an angular momentum, which causes it to be in the in the FIG. 7b Lock position shown turns, if acting on the door opener shocks or shocks. After the fading of such shocks or blows, the turning circle element 4 is acted upon by the spring 43 again in the Neutral position back, allowing a targeted and trouble-free unlocking the door opener 1 by energizing the coil 22nd

LIST OF REFERENCE NUMBERS

1

Door Opener

11

door opener housing

12

strike latch

13

change

131

blocking edge

132

In stock

2

locking device

21

solenoid

22

Kitchen sink

22a

blocking edge

22k

bobbins

23

tappet

23a

recess

231

collar

232

Pestle body

233

plunger point

24

Locking lever / anchor

24A

axis of rotation

24f

Return spring

241

first lever arm

242

second lever arm

243

Stop surface lever

243z

gearing

244

role

245

bearing pin

246

locking contour

25

securing stop

25f

feather

251

safety pin

252

circlip

253

Stop surface Circlip

253z

gearing

26

Return spring plunger

27

elastomeric element

3

blocking device

31a

axis

31t

Blocking element (inertia)

32m

Blocking element (magnetic)

33m

Blocking element (magnetic)

34a, b

feather

4

inertia member

41

ratchet

42

axis of rotation

43

feather

44

rotation limit

9

door

91

doorframe

92a, b

hinge

93

door

94

lock

941

latch

942

pawl

Claims (15)

Impact-proof door opener with a housing (11) for installation in a door with a door frame and a door leaf movable thereon, in particular pivotally mounted,
with a movable door latch (12), a remotely operable locking device (2) and an intermediate change (13), which is designed as a one- or multi-armed lever and with the door latch (12) cooperates such that the door latch (12) in a blocking position and a release position is switchable,
wherein it is provided that the locking device (2) by a coil (22) operable, rotatably mounted locking lever (24) which cooperates with the change (13) and is switchable between a locking position in which the locking lever (24) the change (13) is in abutment and a release position in which the locking lever (24) out of abutment of the change (13), and that the locking lever (24) has two mutually angled lever arms (241, 242), wherein the first lever arm (241) cooperates with the change (13) and the second lever arm (242) projects in the direction of a rotatably mounted inertia element,
characterized,
in that the inertia element (4) is rotatably mounted outside its center of gravity and, in the event of vibrations, rotates into the movement range of the second lever arm (242) or a portion of the second lever arm (242) and blocks movement of the locking lever (24) into the release position. Door opener according to claim 1,
characterized,
in that the two lever arms (241, 242) of the blocking lever (24) extend at an angle to one another such that they have a smaller inner angle and a larger outer angle, and the inertia element (4) is arranged in the inner angle. Door opener according to claim 1 or 2,
characterized;
in that the inertia element (4) has a locking tooth (41) which cooperates with a locking contour (246) of the locking lever (24) for blocking the movement of the locking lever (24) into the release position, preferably by the blocking contour (246) of the locking lever (24 ) with locked locking lever (24) against the ratchet tooth (41). Door opener according to one of claims 1 to 3,
characterized,
in that the inertia element (4) has a neutral position in which the inertia element (4) and / or the locking tooth (41) is arranged outside the movement range of the locking lever (24), preferably in that the inertia element (4) is secured by a spring (43) in Direction of its neutral position is applied. Door opener according to claim 4,
characterized,
that the pivoting circle of a corner point of the locking contour (246) of the locking lever (24) does not intersect with the locking tooth (41) when the inertia element (4) is in its neutral position, and / or that the inertia element (4) is rotatably mounted in such a way in that, in the case of vibrations or impact tests, the locking tooth (41) pivots into the pivoting circle of the corner point of the locking contour (246) of the locking lever (24). Door opener according to one of claims 4 or 5,
characterized,
that the moment of inertia of the inertia member (4) is smaller than the moment of inertia of the catch lever (24). Door opener according to one of the preceding claims,
characterized,
in that the spool (22) and a linearly displaceable ram (23) which can be actuated by the latter cooperate with the locking lever (24) in such a way that it can be switched over the spool-actuated ram (23) between a blocking position in which the locking lever (24) with the change (13) into abutment and a release position, in the locking lever (24) is out of abutment with the change (13) and the second lever arm (242) cooperates in locking position with a safety stop (25) actuable by the spool (22) to prevent release of the change. Door opener according to one of the preceding claims,
characterized,
in that the second lever arm (242) has a first section which cooperates with the coil-actuated locking stop (25) and has a second section cooperating with the inertia element (4). Door opener according to one of the preceding claims,
characterized,
in that the locking lever (24) is arranged in a first plane and the inertia element (4) is arranged in a second plane parallel to the first plane such that the locking tooth (41) of the inertia element (4) projects into the first plane. Door opener according to one of the preceding claims,
characterized,
that the axis of rotation (42) of the inertia element (4) and the axis of rotation (24A) of the locking lever (24) are parallel, or that the axis of rotation (42) of the inertia element (4) and the axis of rotation (24A) of the locking lever (24) perpendicular to each other run. Door opener according to one of claims 7 to 10,
characterized,
in that the locking stop (25) for locking the blocking lever (24) projects into the movement range of the second lever arm (242) and thereby prevents the locking lever (24) from pivoting, and in that the coil (22) acts on the securing stop (25) to move it out of the range of movement of the second lever arm (242) during the switching of the lock lever (24) from the lock position to the release position. Door opener according to one of claims 7 to 11,
characterized,
in that the securing stop (25) is arranged on the plunger (23), preferably that the securing stop (25) is designed as a securing ring (252) which is mechanically connected to the plunger (23) and has a larger diameter than the plunger (23). , wherein it is preferably provided that the securing stop (25) has a stop surface which is separated in the blocking position by an air gap of the second lever arm (242) and in shocks in contact with the second lever arm (242), preferably provided is that the width of the air gap is in the range between 0.1 mm and 5 mm. Door opener according to one of claims 7 to 12,
characterized,
in that the securing stop (25) has a stop face (253) with a toothing (253z) which, at least in case of vibrations, engages in a toothing (243z) arranged on the second lever arm (242) in order to move the tappet (23) in the direction of the release position to prevent, it being preferably provided the toothing (243z) of the second lever arm (242) and / or the plunger (23) is designed as a saw toothing. Door opener according to one of claims 7 to 13,
characterized,
in that the plunger (23) is longer than the longitudinal extent of the coil (22) and passes through the interior of the coil (22) or a bobbin (22k) in the axial direction and has a collar (231) at its end remote from the blocking lever (24). whose diameter is greater than the inner diameter of the coil (22) or the bobbin (22k), and / or that the plunger (23) has a limit stop (23b) in the locked position on the coil (22) or a bobbin (22k) and that either the limit stop (23b) is made of an elastomer or has an elastomer element,
and / or that an elastomer element (27) is arranged between the limit stop (23b) and the coil (22) or the bobbin (22k) or the collar (231),
and / or that the coil (22) is connected to the housing (11) via an elastomeric bearing. Door opener according to claim 14,
characterized,
in that the elastomeric element, preferably the elastomeric ring (27), is fastened either to the spool (22) or to the spool (22k) or to the limit stop (23b) and / or that the limit stop (23b) is replaceably supported on the spool (23) is.

Images