SE2251211A1 - Electric strike assembly - Google Patents

Abstract

An electric strike assembly (100) has a keeper (110) rotatable to and from a lockable position (L1), in which the keeper (110) is arranged to retain the bolt. A locking lever (130) is rotatable about a first end (131) of the locking lever (130). In an inhibiting position (H) of the locking lever (130), a second end (132) of the locking lever (130) is prevented from moving away from the strike plate (125), and in an allowing position (A), the second end (132) of the locking lever (130) is located further away from the strike plate (125). A relief arm (160) of the electric strike assembly (100) is rotatable. A first end (161) of the relief arm (160) is arranged to be pivotably connected at a lever portion (135) of the locking lever (130). A second end (162) of the relief arm (160) is arranged to be pivotally connected. At least one of the first and second ends (161, 162) of the relief arm (160) further is arranged to be displaceably connected at at least one of the lever portion (135) and the peripheral portion (128) and/or the first end (131) of the locking lever (130) further is arranged to be displaceably connected.

Description

TECHNICAL FIELD The embodiments herein relate to an electric strike assembly for installation in a door frame. ln particular, the embodiments herein relate to an electric strike assembly adapted to be mounted in a door frame and adapted to electrically control locking and/or unlocking of a keeper of the electric strike assembly.

BACKGROUND Door assemblies, comprising a door panel and a door frame, are known to be used in a vast range of applications, such as at hotels, hospitals, offices, houses, rooms or the like. ln certain scenarios, such as for facilitating access, in emergency situations or the like, it may be desired to be able to open a door even if it is locked, or at least while keeping a bolt associated with the door in an extended position. This is achieved by that the door frame, in which the door is installed, is provided with an electric strike assembly, or sometimes referred to as an electric strike plate in related literature. Upon activation of the electric strike plate, the door can be opened thanks that the bolt can be released from the electric strike plate while remaining in the extended position, e.g. locked. Alternatively, the activation of the electric strike plate can imply that the door cannot be opened. The former case is often referred to as "fail-secure", i.e. activation is required to allow the door to be opened, and the latter case is often referred to as "fail-safe", i.e. activation is required to prevent the door from being openable, or opened.

A known electric strike plate arrangement typically comprises a keeper that is configured to control whether or not a bolt can pass in or out of a recess in a strike plate of the electric strike plate arrangement. A disadvantage may be that the electric strike plate arrangement fails, or operates poorly, when the bolt exposes the keeper to a side force. The side force may occur due to debris between the door frame and the door, difference in air pressure on opposing sides of the door, skew, distortions in the door assembly associated with the bolt and the electric strike plate arrangement or the like.

A few exemplifying electric strike plate arrangements are shown in Fig. 1a to Fig. 1c. ln these examples, a stop arm 1000 is capable of preventing a keeper 1001 from rotating such that the bolt may escape from the strike plate of the electric strike plate arrangement when the stop arm 1000 is in a locked mode. The locked mode is achieved by that the stop arm 1000 is prevented from rotating when the keeper 1001 pushes at the stop arm 1000. The stop arm's 1000 rotation is obscured by a movable lock part 1002 when put in an obscuring mode. The movable lock part 1002 can by electrical activation assume the obscuring mode or a non-obscuring mode, in which the stop arm's 1000 rotation in not inhibited. As a result, the bolt is allowed to escape from the strike plate when the movable lock part 1002 is in the non-obscuring mode. ln Fig. la and Fig. lb, the movable lock part 1002 is rotatable about a rotation axis that is perpendicular to the strike plate. ln Fig. lc, the movable lock part 1002 is rotatable in a plane that is perpendicular to the strike plate and parallel to a longitudinal main extension direction of the electric strike plate arrangement.

SUMMARY At least one embodiment herein overcomes, or alleviates, the aforementioned disadvantage and/or problem.

According to an aspect, there is provided an electric strike assembly adapted to be mounted in a door frame and adapted to electrically control locking and/or unlocking of a keeper of the electric strike assembly. The electric strike assembly may further be adapted to be received by the door frame.

The electric strike assembly comprises an elongated mounting structure, extending along a main extension direction.

The electric strike assembly further comprises a strike plate for receiving a bolt associated with a door mountable in the door frame. The strike plate is provided with a recess arranged to releasably retain the bolt by means of the keeper.

Moreover, the electric strike assembly comprises the keeper that is rotatable to and from a lockable position, in which the keeper is arranged to retain the bolt.

The electric strike assembly also comprises a locking lever, rotatable about a first end of the locking lever and in a first rotation plane, which is parallel with the main extension direction and perpendicular to a main extension plane of the strike plate. lt may here be mentioned that, in some embodiments, the keeper is rotatable in a second rotation plane that is perpendicular to the main extension direction.

The locking lever is rotatable between an inhibiting position and an allowing position. ln the inhibiting position, a second end of the locking lever is prevented from moving away from the strike plate by rotation of the locking lever. ln this manner, the keeper of the electric strike assembly is locked. ln the allowing position, the second end of the locking lever is located further away from the strike plate than in the inhibiting position. ln this manner, the keeper of the electric strike assembly is unlocked.

Furthermore, the electric strike assembly comprises a locking member movable, such as rotatable, displaceable or the like, between a locked position and an unlocked position. ln the locked position, the locking lever is prevented from reaching the allowing position. ln the unlocked position, the locking lever is allowed to leave the inhibiting position.

Additionally, the electric strike assembly comprises an electric actuator connected to the locking member. The electric actuator is configured to lock the keeper by moving, such as pushing, forcing or the like, the locking member to the locked position or to unlock the keeper by moving, such as forcing, pushing, or the like, the locking member to the unlocked position upon electrical activation. ln particular, the electric strike assembly comprises a relief arm rotatable in the first rotation plane. The relief arm comprises a protrusion arranged to abut against the keeper when the keeper is forced away from the lockable position.

A first end of the relief arm is arranged to be pivotably connected at a lever portion of the locking lever. The lever portion is located closer to the first end of the locking lever than a second end of the locking lever.

A second end of the relief arm is arranged to be pivotally connected at a peripheral portion of the elongated mounting structure. The peripheral portion is located closer to the second end of the locking lever than the first end of the locking lever. The peripheral portion is oppositely located with respect to the strike plate.

Yet further, at least one of the first and second ends of the relief arm further is arranged to be displaceably connected at at least one of the lever portion and the peripheral portion. Alternatively or additionally, the first end of the locking lever further is arranged to be displaceably connected at a further peripheral portion of the mounting structure, wherein the further peripheral portion is oppositely located with respect to the strike plate.

Thanks to the relief arm, a friction force between the second end of the locking lever and the locking member is reduced, since the relief arm distributes a push force, originating from the keeper and exerted to the relief arm, to the first end of the locking lever, to the second end of the relief arm and also to the second end of the locking lever. As a result, the electric actuator may displace the locking member while using less energy or while overcoming greater so-called side forces, which may occur due to side pressure or the like. The side forces, or sometimes referred to as pre-load in related literature, may occur due to debris between the door frame and the door panel, difference in air pressure on opposing sides of the door panel, skew, distortions in the door assembly associated with the electric strike plate assembly or the like. The aforementioned push force may occur when the door assembly is pre-loaded. ln the prior art, see Fig. lc, a projection on the stop arm is located closer to a rotation end of the stop arm about which the stop arm is rotatable. ln order to further mitigate impact of pre-load, it would be desired to position the projection even closer to the rotation end. However, it is expected that this leads to that the keeper cannot easily push away the stop arm when the electric strike arrangement is unlocked. The embodiments herein overcome, or at least mitigate, this potential shortcoming. ln some embodiments, the protrusion of the relief arm extends towards the strike plate. ln this manner, it may be ensured that the keeper primarily abuts against the protrusion when the keeper is exposed to side forces. ln some embodiments, the protrusion is located between the first and second ends of the relief arm, preferably centrally located at the relief arm. ln this manner, it may be ensured that forces at the protrusion, eg. from the keeper, is relatively evenly distributed between the first and second ends of the relief arm. ln some embodiments, the lever portion of the locking lever comprises a slot, an indentation or a pin. With a slot or a pin, it may be sufficient to mechanically bias one of the locking lever and the relief arm to ensure that the locking lever is biased to the inhibiting position. With an indentation, it may be preferred that the locking lever is directly mechanically biased to the inhibiting position. ln some embodiments, the peripheral portion comprises a slot, an indentation or a pin.

Preferably, the peripheral portion is located at a rotational axis of the locking member. When the peripheral portion is located at the rotational axis, it may be preferred that the peripheral portion comprises a pin. ln this manner, a compact and space-saving embodiment may be obtained. lt shall, nevertheless, be understood that it is also possible that the peripheral portion is located at a different location than the rotational axis of the locking member. Notably, the rotation of the locking member and the rotation of the relief arm are independent of each other. ln some embodiments, the strike plate is faceable towards a face plate of the door when the door is closed. This means that the strike plate of the electric strike assembly is arranged to face the face plate of the door when the electric strike assembly is installed, or mounted, in the door frame. ln some embodiments, at least one of the locking lever and the relief arm is mechanically biased, whereby the locking lever is biased towards the inhibiting position. ln some embodiments, the electric actuator is operable against a mechanical bias, i.e. when the electric actuator is electrically activated the electric actuator will force the locking member from its biased position, such as the locked position or the unlocked position depending on whether the electric strike assembly is configured as "fail-secure" or "fail-safe". As previously mentioned, the mechanical bias may be provided by a spring arranged directly at or to indirectly act on the locking member ln some embodiments, the keeper is mechanically biased towards the lockable position. ln this manner, it is facilitated that the locking member is capable of entering the locked position when the electric strike assembly is at rest, e.g. not exposed to side forces via the keeper. ln some embodiments, the locking lever and the relief arm are arranged to form a Y-like shape when the keeper is in the lockable position as seen in a traverse direction that is perpendicular to the first rotation plane. The Y-like shape supports the electric strike assembly with the distribution of the force occurring due to side pressure. ln some embodiments, the locking member is rotatable in the first rotation plane.

Alternatively, the locking member may be rotatable in a plane that is parallel with the strike plate.

BRIEF DESCRIPTION OF THE DRAWINGS The various aspects of embodiments disclosed herein, including particular features and advantages thereof, are explained in the following detailed description and the accompanying drawings. The drawings are not to scale and any measures indicated are merely provided as examples for ease of understanding.

Figure la to Figure lc are side views illustrating a few known electric strike plate arrangements.

Figure 2 is an overview illustrating a door assembly in which an exemplifying electric strike assembly is installed.

Figure 3a is a perspective view illustrating an exemplifying electric strike assembly.

Figure 3b is an exploded view illustrating an exemplifying electric strike assembly.

Figures 4 to 7 are plane and perspective views illustrating the lockable position of the keeper and the locked position of the locking member.

Figures 8 to 10 are plane views illustrating the unlocked position of the locking member and the allowing position of the locking lever.

Figures 11a-11c are views illustrating the locking lever. Figures 12a-12cdare views illustrating the relief arm.

Figures 13a-13e are views illustrating the locking member.

DETAILED DESCRIPTION Figure 2 i||ustrates a door assembly 10 comprising a door panel 2, such as a door blade, a door leaf, a door, or the like. The door assembly 10 further comprises a door frame 3.

The door panel 2 may be provided with a door lock arrangement 1. Expressed differently, the door lock arrangement 1 is installed, such as mounted, or the like, in the door panel 2. The door lock arrangement 1 may comprise a bolt 5 and a face plate 7. A hub 4 for receiving a lock lever or a key is shown for completeness.

Moreover, the Figure shows a handle hub 6 at which a lever handle 8 of the door is mounted. The door leaf 2 is usually mounted in a door frame via hinges 9.

Figure 2 further i||ustrates an exemplifying electric strike assembly 100.

Figure 3a i||ustrates the exemplifying electric strike assembly 100 in more detail. Figure 3b shows an exploded view of the same exemplifying electric strike assembly 100. The electric strike assembly 100 is adapted to be mounted in the door frame 3 and adapted to electrically control locking and/or unlocking of a keeper 110 of the electric strike assembly 100. Typically, the electric strike assembly 100 may be adapted to be received by the door frame 3.

The electric strike assembly 100 comprises an elongated mounting structure 120, extending along a main extension direction M1. ln more detail, the mounting structure 120 may be adapted for mounting the electric strike assembly 100 in the door frame 3.

The electric strike assembly 100 further comprises a strike plate 125 for receiving a bolt 5 associated with a door panel 2 mountable in the door frame 3. The strike plate 125 is provided with a recess 127 arranged to releasably retain the bolt 5 by means of the keeper 110. As an example, the recess 127 is closable, with respect to a direction in a main extension plane of the strike plate 125 and perpendicular to the main extension direction M1, by the keeper 110. Expressed differently, the electric strike assembly 100 is arranged to releasably retain the bolt 5 by releasing or retaining the keeper to allow or not allow the bolt 5 to escape from the recess 127.

Furthermore, strike plate 125 may be a separate part or integrated with the elongated mounting structure 120. Typically, the strike plate 125 is faceable towards the face plate 7 of the door panel 2 when the door is closed.

Additionally, the electric strike assembly 100 comprises the keeper 110 that is rotatable to and from a lockable position L1, in which the keeper 110 is arranged to retain the bolt. As an example, in the lockable position of the keeper 110, the electric strike assembly 100 is lockable, whereby rotation of the keeper is limited, such as inhibited or the like. Typically, the keeper 110 may be mechanically biased towards the lockable position L1. As a further explanation, in the lockable position, the keeper 110 at least partially closes the recess 127 thereby the keeper 110 is capable of preventing the bolt from leaving the recess. As a result, if the door panel is closed it will remain closed. Typically, the keeper 110 is rotatable in a second rotation plane R2 that is perpendicular to the main extension direction M1.

Further, the electric strike assembly 100 comprises a locking lever 130, rotatable about a first end 131 of the locking lever 130 and in a first rotation plane R1, which is parallel with the main extension direction M1 and perpendicular to a main extension plane S1 of the strike plate 125. The locking lever 130 is rotatable between an inhibiting position H and an allowing position A. ln the inhibiting position H, a second end 132 of the locking lever 130 is prevented from moving away from the strike plate 125 by rotation of the locking lever 130, whereby the keeper 110 of the electric strike assembly 100 is locked. ln the allowing position A, the second end 132 of the locking lever 130 is located further away from the strike plate 125 than in the inhibiting position H, whereby the keeper 110 of the electric strike assembly 100 is unlocked. Accordingly, when the keeper 110 is unlock, the bolt of the door panel is capable of escaping from the recess, i.e. releasable from the recess.

Moreover, the electric strike assembly 100 comprises a locking member 140 movable, such as rotatable, between a locked position L2 and an unlocked position L3. ln the locked position L2, the locking lever 130 is prevented from reaching the allowing position. Expressed differently, the locking lever 130 is forced to remain in the inhibiting position H when the locking member 140 is in the locked position L2. ln the unlocked position L3, the locking lever 130 is allowed to leave, such as capable of leaving, the inhibiting position H. ln some embodiments, the locking member 140 is rotatable in the first rotation plane R1. However, as seen in e.g. Fig. 1a, the locking member moves in a plane that is parallel with the strike plate 125.

Yet further, the electric strike assembly 100 comprises an electric actuator 150 connected to the locking member 140. The electric actuator 150 is configured to lock the keeper 110 by moving, such as forcing, pushing, or the like, the locking member 140 to the locked position L2 or to unlock the keeper 110 by moving, such as forcing, pushing, or the like, the locking member 140 to the unlocked position L3 upon electrical activation.

As an example, the electric actuator 150 is configured to extend or retract linearly upon electrical activation against a mechanical bias of the electrical actuator 150. ln this manner, the locking member 140 is caused to move, such as rotate or the like, from the locked position L2 to the unlocked position L3 or to the locked position L2 from the unlocked position (L3).

The electric actuator 150 may be a solenoid, DC-motor or the like. ln more detail, the electric actuator 150 includes a rod or the like. The rod is, upon electrical activation of the electric actuator 150, displaced linearly, preferably against a mechanical bias.

The mechanical bias may be provided in or at the electrical actuator 150. Alternatively or additionally, the mechanical bias may be provided by mechanically biasing the locking member 140, e.g. by means of a spring, a coil, a helix or the like.

According to the embodiments herein, the electric strike assembly 100 further comprises a relief arm 160 rotatable in the first rotation plane R1.

The relief arm 160 comprises a protrusion 165 arranged to abut against the keeper 110 when the keeper 110 is moved, such as forced, pushed or the like, away from the lockable position L1. ln this manner, it is ensured that the keeper 110 primarily pushes at the relief arm 160 when the keeper is exposed to side forces. ln more detail, the protrusion 165 of the relief arm 160 extends towards the strike plate 125. The protrusion 165 thus locks the keeper 110, when the locking lever 150 is in the inhibiting position H and the locking member 140 is in the locked position L2. lt is the protrusion 165 that sufficiently prevents the keeper 110 from rotating away from the strike plate 125 when the locking member 140 is in the locked position L2, should pre-load exist. As a result, the keeper 110 is locked, e.g. by the protrusion 165.

Notably, in the known solutions of Fig. 1a-1c, a projection of the stop arm, i.e. the projection being directly connected to the stop arm, is configured to abut the keeper when the keeper is locked and the door assembly is exposed to pre-load. ln contrast thereto, the protrusion 165 according to the embodiments herein is indirectly connected to the locking lever 130 via the relief arm 160, e.g. via a first end 161 thereof.

The first end 161 of the relief arm 160 is arranged to be pivotably connected at a lever portion 135 of the locking lever 130. The lever portion 135 is located closer to the first end 131 of the locking lever 130 than a second end 132 of the locking lever 130. ln more detail, the first end 131 and the second end 132 of the locking lever 130 are opposite to each other.

A second end 162 of the relief arm 160 is arranged to be pivotally connected at a peripheral portion 128 of the elongated mounting structure 120. The peripheral portion 128 is located closer to the second end 132 of the locking lever 130 than the first end 131 of the locking lever 130. The peripheral portion 128 is oppositely located with respect to the strike plate 125. According to various examples, the peripheral portion 128 comprises a slot, an indentation or a pin. Preferably, the peripheral portion 128 preferably is located at a rotational axis L1 of the locking member 140. At least one of the first and second ends 161, 162 of the relief arm 160 is further arranged to be displaceably connected at at least one of the lever portion 135 and the peripheral portion 128. Alternatively or additionally, the first end 131 of the locking lever 130 further is arranged to be displaceably connected at a further peripheral portion 129 of the mounting structure 120, wherein the further peripheral portion 129 is oppositely located with respect to the strike plate 125. ln some embodiments, at least one of the locking lever 130 and the relief arm 160 is mechanically biased, whereby the locking lever 130 is biased towards the inhibiting position H. ln some embodiments, the electric actuator 150 is operable against a mechanical bias. The mechanical bias may be provided within the electric actuator 150 itself. Alternatively or additionally, the mechanical bias may be provided by biasing of the locking member 140, which in turn may be connected to the electric actuator 150, in particular to a displaceable rod thereof. ln some embodiments, the locking lever 130 and the relief arm 160 are arranged to form a Y- like shape when the keeper 110 is in the lockable position L1 as seen in a traverse direction T that is perpendicular to the first rotation plane R1.

Figures 4-7 show the electric strike assembly 100 when the keeper 110 is locked. ln the lockable position L1 the keeper 110 is able to retain the bolt within the recess. The lockable position L1 may be defined by a distance, in a direction perpendicular to the strike plate, from a rotational axis of the keeper to a tip of the keeper. The distance is preferably equal to or greater than a length, along said direction, from said rotational axis of the keeper to an exterior surface of the strike plate 125.

Moreover, in the inhibiting position H of the locking lever 130, the keeper 110 is also able to retain the bolt within the recess, thanks to that the protrusion of the relief arm 150 abuts the keeper 110 whereby it remains in the lockable position L1 when the electric strike assembly 100 is pre- loaded.

Furthermore, the locked position L2 of the locking member 140 may be defined by that the locking lever 130 collides with the locking member 140 when the electric strike assembly 100 is pre- loaded.

The peripheral portion 128 and the further peripheral portion 129 are located oppositely to each other with respect to the main extension direction M1. lt may be preferred that the peripheral portion 128 and the further peripheral portion 129 are located at opposite sides of a central transversal plane of the electric strike assembly 100. More preferably, the peripheral portion 128 and the further peripheral portion 129 are located at, such as towards, in the vicinity of, near, proximate to or the like, opposite ends of the electric strike assembly 100 with respect to the central transversal plane.

Furthermore, the electric strike assembly 100 has a peripheral side that is opposite to the strike plate 125. At least one of the peripheral portion 128 and the further peripheral portion 129 are located at, such as towards, in the vicinity of, near, proximate to, along or the like, the peripheral side. lt may be preferred that both the peripheral portion 128 and the further peripheral portion 129 are located at the peripheral side.

Figures 8-10 show the electric strike assembly 100 when the keeper 110 is unlocked, i.e. the keeper 110 is able to escape the recess. This can happen when the locking lever 130 is in the allowing position A, since then the locking member 140 has been moved to the unlocked position L3. ln the unlocked position L3, the locking lever 130 does not collide with the locking member 140. Therefore, as pre-load causes the keeper 110 to rotate, the keeper 110 will abut the relief arm 160, which is pushed away from the strike plate together with the locking lever 130. The locking lever 130 will then reach the allowing position A as already mentioned, the locking lever 130 will not be stopped by the locking member 140.

Figure 11a to 11c show the locking lever 130 in perspective and plane views. ln this example, the locking lever 130 is provided with a through-hole 133 at the first end 131. A pin (not shown in Figures 11a-11c) of the elongated mounting structure 120 may be received by the through-hole 133. ln this manner, the locking lever 130 may be movably, in particularly rotatably, connected to the electric strike assembly 100, in particular to the mounting structure 120 thereof.

The second end 132 is configured, such as shaped, designed, formed or the like, to preferably allow the keeper 110 to more or less freely rotate without, or almost without or with little, contact with the locking lever 130 independently of whether the locking lever 130 is in the inhibiting position H or in the allowing position A.

As mentioned, the lever portion 135 is typically located closer to the first end 131 of the locking lever 130 than the second end 132 of the locking lever 130. ln some embodiments, the lever portion 135 of the locking lever 130 comprises a slot, an indentation, a pin or the like. ln this example, the lever portion 135 is embodied by an indentation, a cavity, an excavation or the like. ln this manner, a play, or a margin, is provided at a connection between the lever portion 135 and the first end 161 of the relief arm 160. The play may be provided in many other manners as well. For 11 example, the lever portion 135 may be embodied as a pin, in which case it would be preferred to provide the first end 161 of the relief arm 160 with an indentation, or slot. ln this example, the connection between the lever portion 135 and the first end 161 of the relief arm 160 is movable both in terms of rotation and translation, or displacement. ln other examples, this connection may be movable only in terms of rotation. ln such case, the second end 162 of the relief arm 160 is preferably both rotatable and translatable. However, it is also possible to provide the first end 131 of the locking lever 130 with a connection that is both rotatable and translatable, e.g. by making the aforementioned through-hole 133 elongated, i.e. the cross-section of the through-hole is elongated, such as oval, or the like.

Figure 12a to 12d show the relief arm 160 in perspective and plane views. ln this example, the protrusion 165 is located between the first and second ends 161, 162 of the relief arm 160, preferably at, or near, a middle of the relief arm 160, e.g. as seen in the longitudinal direction of the relief arm 160. The protrusion 165 is configured to extend towards the strike plate. ln this example, the first end 161 is provided with a pin, which is configured to be received by the lever portion 165 of the locking lever 160. As above, there is in this manner provided a connection between the first end 161 of the relief arm 160 and the lever portion 165 that is both rotatable and translatable. However, this connection may in some examples be only rotatable. ln these examples, it may be preferred that a connection between the second end 162 of the relief arm 160 and the peripheral portion 128 is rotatable and translatable. Again as mentioned, alternatively or additionally, the connection between the first end 131 of the locking lever 130 and the elongated mounting structure 120 may be configured to provide rotation and translation.

Summarizing the above alternatives, combinations and examples concerning "connections", such as joints, connecting points or the like. With the embodiments herein, there may typically be three connections, as illustrated in Figure 4.

A first connection 401 between the first end 131 of the locking lever 130 and the further peripheral portion 129.

A second connection 402 between the first end 161 of the relief arm 160 and the lever portion 135.

A third connection 403 between the second end 162 of the relief arm 160 and the peripheral portion 128. ln order for the locking lever 130 to be able to rotate between the inhibiting position H and the allowing position A, it is sufficient that one of the first, second and third connection 401, 402, 403 is configured to provide both rotation and translation. Therefore, one or more of said first, second 12 and third connection 401, 402, 403 may configured to provide rotation and translation. Moreover, as is evident from the foregoing description, rotation only as well as rotation and translation at any one of the first, second and third connections 401, 402, 403 may be provided by in various manner by combining pins, through-holes, slots, grooves, indentations, or the like.

Figures 13a to 13e show plane and perspective views of the locking member 140. The locking member 140 may be provided with a surface 144 that faces towards the second end 132 of the locking lever 130 when the locking lever 130 is in the inhibiting position H and the locking member 140 is in the locked position L2. ln this manner, the locking lever 130 and the locking member 140 arranged to abut each other when the keeper 110 is exposed to side forces, i.e. the door panel is exposed to pre-load. ln this example, the locking member 140 is provided with a protruding part 146, such as a pin, a projection or the like, arranged to connect to the electric actuator 150, in particular the rod thereof. Again similarly as above, this connection between the rod 151 of the electric actuator 150 may be embodied in many different manners, such as by providing a pin at the locking member 140 and a hole for receiving said pin at the rod of the electric actuator 150, or vice versa. Accordingly, the protruding par 146 may be replaced by a hole, if the rod 151 of the electric actuator 150 is provided with e.g. a projection arranged to be received by the hole. ln a further example, the locking lever 130 may be referred to as a first locking lever 130 and the relief arm 160 may be referred to as a second locking lever 160. With this wording, it is emphasized that the electric strike assembly comprises two locking levers, i.e. the first locking lever 130 and the second locking lever 160. Similarly to the description above concerning the positions of the locking lever 130, it may be that the second locking lever 160 is movable between a further inhibiting position, when the first locking lever 130 is in the inhibiting position H, and a further allowing position, when the first locking lever 130 is in the allowing position A.

As used herein, the term "bias", "biased", "biasing" or the like may refer to mechanical biasing by means of a spring, a plate spring or the like. ln some examples, biasing may be achieved by a magnet, such as an electro-magnet, permanent magnet or the like. Bias shall be understood to mean directly or indirectly mechanically biased as given by the context. Directly biased refers to that e.g. a spring is directly connected to a present part and thus achieving a mechanical bias of the present part. |ndirectly biased refers to that e.g. a spring is indirectly connected, e.g. via one or more other elements, parts, or the like, to the present part and in such fashion nevertheless achieves a mechanical bias of the present part. Bias may be provided by a spring, a plate spring, a compression 13 spring, an extension spring, a torsional spring, a helix or the like. ln some examples, mechanical bias may be achieved by a magnet, such as an electro-magnet, permanent magnet or the like.

As used herein, the term "along an axis" may refer to para||e||y with the axis and/or coinciding with the axis.

Each embodiment, example or feature disclosed herein may, when physically possible, be combined with one or more other embodiments, examples, or features disclosed herein.

Even though embodiments of the various aspects have been described above, many different alterations, modifications and the like thereof will become apparent for those skilled in the art. The described embodiments are therefore not intended to limit the scope of the present disclosure.

Claims (1)

1. An electric strike assembly (100) adapted to be mounted in a door frame (3) and adapted to electrically control locking and/or unlocking of a keeper (110) of the electric strike assembly (100), wherein the electric strike assembly (100) comprises an elongated mounting structure (120), extending along a main extension direction (M1), a strike plate (125) for receiving a bolt (5) associated with a door (2) mountable in the door frame (3), wherein the strike plate (125) is provided with a recess (127) arranged to releasably retain the bolt (5) by means of the keeper (110), the keeper (110) is rotatable to and from a lockable position (L1), in which the keeper (110) is arranged to retain the bolt, a locking lever (130), rotatable about a first end (131) of the locking lever (130) and in a first rotation plane (R1), which is parallel with the main extension direction (M1) and perpendicular to a main extension plane (S1) of the strike plate (125), wherein the locking lever (130) is rotatable between an inhibiting position (H), in which a second end (132) of the locking lever (130) is prevented from moving away from the strike plate (125) by rotation of the locking lever (130), and an allowing position (A), in which the second end (132) of the locking lever (130) is located further away from the strike plate (125) than in the inhibiting position (H), a locking member (140) movable between a locked position (L2), in which the locking lever (130) is prevented from reaching the allowing position, and an unlocked position (L3), in which the locking lever (130) is allowed to leave the inhibiting position (H), and an electric actuator (150) connected to the locking member (140), wherein the electric actuator (150) is configured to lock the keeper (110) by moving the locking member (140) to the locked position (L2) or to unlock the keeper (110) by moving the locking member (140) to the unlocked position (L3) upon electrical activation, wherein the electric strike assembly (100) comprises a relief arm (160) rotatable in the first rotation plane (R1), wherein the relief arm (160) comprises a protrusion (165) arranged to abut against the keeper (110) when the keeper (110) is moved away from the lockable position (L1), wherein a first end (161) of the relief arm (160) is arranged to be pivotably connected at a lever portion (135) of the locking lever (130), wherein the lever portion (135) is located closer to the first end (131) of the locking lever (130) than a second end (132) of the locking lever (130), wherein a second end (162) of the relief arm (160) is arranged to be pivotally connected at a peripheral portion (128) of the elongated mounting structure (120), wherein the peripheral portion (128) is located closer to the second end (132) of the locking lever (130) than the first end (131) of the locking lever (130), wherein the peripheral portion (128) is oppositely located with respect to the strike plate (125), and wherein at least one of the first and second ends (161, 162) of the relief arm (160) further is arranged to be displaceably connected at at least one of the lever portion (135) and the peripheral portion (128), and/or wherein the first end (131) of the locking lever (130) further is arranged to be displaceably connected at a further peripheral portion (129) of the mounting structure (120), wherein the further peripheral portion (129) is oppositely located with respect to the strike plate (125). The electric strike assembly (100) according to the preceding claim, wherein the protrusion (165) of the relief arm (160) extends towards the strike plate (125). The electric strike assembly (100) according to any one of the preceding claims, wherein the protrusion (165) is located between the first and second ends (161, 162) of the relief arm (160), preferably centrally located at the relief arm (160). The electric strike assembly (100) according to any one of the preceding claims, wherein the lever portion (135) of the locking lever (130) comprises a slot, an indentation or a pin. The electric strike assembly (100) according to any one of the preceding claims, wherein the peripheral portion (128) comprises a slot, an indentation or a pin, wherein preferably the peripheral portion (128) preferably is located at a rotational axis (L1) of the locking member (140). The electric strike assembly (100) according to any one of the preceding claims, wherein the strike plate (125) is faceable towards a face plate (7) of the door (2) when the door is closed. The electric strike assembly (100) according to any one of the preceding claims, wherein at least one of the locking lever (130) and the relief arm (160) is mechanically biased, whereby the locking lever (130) is biased towards the inhibiting position (H). The electric strike assembly (100) according to any one of the preceding claims, wherein theelectric actuator (150) is operable against a mechanical bias. The electric strike assembly (100) according to any one of the preceding claims, wherein the keeper (110) is mechanically biased towards the lockable position (L1) The electric strike assembly (100) according to any one of the preceding claims, wherein the locking lever (130) and the relief arm (160) are arranged to form a Y-like shape when the keeper (110) is in the lockable position (L1) as seen in a traverse direction (T) that is perpendicular to the first rotation plane (R1). The electric strike assembly (100) according to any one of the preceding claims, wherein the locking member (140) is rotatable in the first rotation plane (R1). The electric strike assembly (100) according to any one of the preceding claims, wherein the keeper (110) is rotatable in a second rotation plane (R2) that is perpendicular to the main extension direction (M1), The electric strike assembly (100) according to any one of the preceding claims, being adapted to be received by the door frame (3).