CN114080483B

CN114080483B - Locking element for windows, doors and the like

Info

Publication number: CN114080483B
Application number: CN202080050125.9A
Authority: CN
Inventors: 格雷戈尔·朔恩施泰纳; 约瑟夫·赫茨尔
Original assignee: Maco Technologie GmbH
Current assignee: Maco Technologie GmbH
Priority date: 2019-07-09
Filing date: 2020-07-02
Publication date: 2023-06-20
Anticipated expiration: 2040-07-02
Also published as: CN114080483A; EP3963158B1; EP3963158A1; DE102019118535A1; WO2021004875A1

Abstract

The invention relates to a catch piece (10) for windows, doors or the like, wherein the windows, doors or the like have a frame and a leaf that is movable relative to the frame. The locking piece (10) comprises: a main body (12) arranged to be fastened to a frame or a fan; a catch element (14) rotatably arranged on the main body (12), defining a bolt element (16) for fastening to a fan or frame, and being movable between a release position releasing the bolt element in an opening direction (R) of the fan and a blocking position blocking the bolt element in the opening direction (R); and a bolt slide (21) which is guided in the body (12) in a manner such that it can be pushed between a locking position and an unlocking position and is pretensioned in the direction of the locking position by at least one spring; the tongue slide (21) in the blocking position preventing movement of the catch element (14) from the blocking position to the release position, in the unlocking position allowing movement of the catch element (14) between the blocking position and the release position; the locking bolt slide (21) has a marking position between a locking position and an unlocking position, in which marking position the locking bolt slide (21) can be displaced in the direction of the unlocking position against the spring force by a displacement of the locking element (14) between the blocking position and the release position.

Description

Locking element for windows, doors and the like

Technical Field

The present invention relates to a locking element for windows, doors and the like having a frame and a leaf movable relative to the frame. The latch includes a body configured to be secured to the frame or the fan, and a latch element rotatably disposed on the body. The catch element defines a holding receptacle for securing the bolt element to the fan or frame, and is movable between a release position releasing the bolt element in the opening direction of the fan and a blocking position blocking the bolt element in the opening direction. The locking element further comprises a locking tongue slide which is guided in a pushing manner between a locked position and an unlocked position to the body and is pretensioned by at least one spring in the direction of its locked position. The catch is furthermore arranged such that the catch slide, when in the blocking position, prevents a movement of the catch element from the blocking position into its release position, and the catch slide, when in the unlocking position, permits a movement of the catch element between the blocking position and the release position.

Background

Such locking elements are commonly used to latch or unlatch windows, doors, gates, and the like. Depending on the application, the body of the housing, which serves as a single mechanical component for the shackle, can be arranged to be fastened to the frame, and the bolt element can be arranged to be fastened to the fan, or vice versa. In particular, the body may be arranged to be received in and secured to a fitting recess of a frame or a fan.

Disclosure of Invention

According to an embodiment of the invention, the tongue element may be a simple pin, in particular a roller pin. In particular, the pin can have a cylindrical cross section, in order to achieve a particularly easy sliding into the holding receptacle of the catch element. To improve the protection against unacceptable prying of the catch piece, the pin may preferably be provided as a mushroom-headed pin. The catch element is pivotable between its release position and its blocking position, for example about a pivot axis transverse to the opening direction. This results in a particularly simple structure.

When the catch piece is installed, the catch element fastened to the leaf or the frame enters the holding receptacle of the catch element during the closing movement of the leaf, so that said catch element is pushed into its blocking position by the catch element during the closing movement of the leaf, in which blocking position it can be secured by the catch slider, so that the catch element cannot return to its release position. The locking element is automatically moved into its blocking position by closing the leaf and the leaf in this state of the locking catch is blocked from reopening, so that the leaf prevents accidental opening immediately after the closing process, even if the user only gives it a light "push".

In order to be able to re-open the leaf, the bolt slide must then be actively switched back into its unlocking position, which can be achieved, for example, by actuation of a handle (for example, a door handle) or actuation of an actuator (for example, a motor).

In the case of a building door or a store door of an apartment building, it is desirable to disable the fixing function of the tongue slider at least partially. For example, when a certain pressure or tension is applied to the fan, it is possible to open the fan after a certain holding resistance has been overcome, without the bolt slide having to be positively switched to its unlocking position for this purpose in advance, and thus the catch element being positively released. However, this may also ensure that the door is not affected by accidental opening (e.g., due to high winds). In contrast, when a sufficiently large force is applied to the fan, the catch element automatically returns from its blocking position to its release position against the holding resistance, so that the fan can be opened without the tongue slide being actively converted back into its unlocking position for this purpose. This function may also be referred to herein as a tag function (Tagfunktion), or as a conditional fix.

The object of the present invention is therefore to improve the prior art catch described here in such a way that the fan can be opened as desired, without the tongue slide having to be actively switched to its unlocking position in advance for this purpose in the case of an upstream drive step.

This object is achieved according to a first aspect of the locking element having the features of claim 1, and in particular by the tongue slide having an intermediate position, called the marking position, between the locked position and the unlocked position. In this marking position, the locking bolt slide can be displaced in the direction of the unlocking position against the spring force by the movement of the locking element between the blocking position and the release position.

For example, also because a strong wind applies a small force to the catch element by the fan, the catch element is held in its blocking position by the tongue slider in the same desired manner as before, as long as the force caused by the strong wind does not overcome the holding resistance caused by the spring force of the spring. In contrast, when a sufficiently large force is applied, the force is transferred by the catch element of the catch piece to the catch slide, so that the catch slide is deflected in the direction of its unlocking position relative to the spring force of the spring, and the catch element is released thereby. The locking element can thus automatically be brought from its blocking position into its release position without the locking bolt slide having to be specially switched for this purpose in its unlocking direction.

When only a relatively small force is present on the fan in the marking position of the catch slide, the movement of the catch element from the blocking position into the release position is counteracted and the fan is thereby held conditionally in its closed position. In contrast, when a relatively large force is present on the leaf in the marked position of the bolt slide, this results in the catch element being able to be moved from the blocking position into its release position, so that the bolt slide is deflected against the spring force of the spring in the direction of its unlocking position.

In the marked position of the catch slide, the catch element is held in its blocking position in a desired manner to prevent accidental opening of the fan, whereas in the presence of a correspondingly large opening force on the fan the catch element can be switched to its release position without the catch slide being released for this purpose beforehand.

According to a second aspect of the present invention there is provided a catch member for a window, door or the like having a frame and a leaf movable relative to the frame. The latch also includes a body configured to be secured to the frame or the fan, and a latch element rotatably disposed on the body. The catch element defines a holding receptacle for securing the bolt element to the fan or frame, and is movable between a release position releasing the bolt element in the opening direction of the fan and a blocking position blocking the bolt element in the opening direction. The locking element further comprises a locking tongue slide which is guided on the body in a manner that can be pushed between a locking position and an unlocking position and is pretensioned by at least one spring in the direction of its locking position. Furthermore, the catch is arranged such that the catch slide in the blocking position prevents movement of the catch element from the blocking position to its release position, and the catch slide in the unlocking position allows movement of the catch element between the blocking position and the release position. With the catch of the second aspect, it is also possible, if desired, for the bolt slide to have an intermediate position between the locking position and the unlocking position number, which is referred to as the marking position. In this marking position, the bolt slide can be displaced against the spring force of the spring in the direction of the unlocking position as a result of the movement of the catch element between the blocking position and the release position.

Next, preferred embodiments of the present invention will be described according to the first and second aspects. Other embodiments may also be derived from the dependent claims, from the description of the figures and from the drawings.

In order to adjust the pawl, a handle (e.g., a door handle or the like) can be provided that is operatively coupled to the pawl, by actuation of which the latch slide can be pushed between its respective positions.

In order to make the driving of the bolt slide more user friendly, according to an embodiment of the invention it may be provided that the catch comprises a motor arranged on the body, which motor is coupled to the bolt slide with a driving effect such that the bolt slide is brought closer to or farther from the unlocking position depending on the direction of rotation of the motor. In this way, the user does not have to apply force to move the deadbolt slider by himself. In particular, the driving of the rotary handle or the like is not required. Thus, a window or door without an operating element provided with the catch piece of the invention can be realized, and thus a handle-free. Thus, such windows and doors are particularly visually attractive. Furthermore, the installation of such a catch piece is also simplified, since the motor is integrated in the catch piece and thus no mechanical coupling of the bolt slide to the fitting transmission piece is necessary.

In principle, the motor may be implemented as an in-line motor. In contrast, according to a further embodiment, it can be provided that the motor has a rotationally driven output shaft which is coupled with a driving effect to a spindle drive which converts the rotational movement of the output shaft of the motor into a pushing movement of the catch slide. The spindle drive is preferably configured to be self-locking (selbschemend), so that the motor is immediately turned off after the desired position of the bolt element has been reached after the motor-driven displacement phase.

According to a further embodiment, the spindle drive can comprise a drive spindle driven by a motor and a spindle nut which carries the tongue slide and is thereby coupled with the tongue slide with a driving effect such that the desired pushing movement of the tongue slide is achieved.

In particular, it can be provided here that the catch slide is coupled to the spindle nut such that the catch slide in its marking position is displaced against the spring force of the spring relative to the spindle nut in the direction of the unlocking position. Thus, the deadbolt slider is not rigidly coupled to the spindle nut; instead, the deadbolt slider may move to some extent relative to the spindle nut in the axial direction of the drive spindle.

For example, the offset of the tongue slide relative to the spindle nut (or vice versa) is defined by two stops spaced apart from each other in the axial direction of the drive spindle. When the spindle nut is moved relative to the tongue slide by the motor due to the drive of the drive spindle, the movement of the spindle nut is transferred to the tongue slide only when the corresponding stop is reached. At this point, movement of the spindle nut is transferred to the deadbolt slide. In the marked position of the bolt slide, in this case the bolt slide does not contact this stop, which stops the movement of the bolt slide in the direction of its unlocking position, or against which the spindle nut rests in order to move the bolt slide into its locking position, since in other cases the bolt slide cannot be deflected in the direction of its unlocking. More precisely, the stop has no effect in the marking position of the locking bolt slide, so that the locking bolt slide can be displaced in the direction of the unlocking position in the desired manner.

The catch slide is pretensioned in the direction of the blocking position of the catch slide by a spring which can be supported on the one hand on the catch slide and on the other hand on a part which is not movable relative to the body or on a part which is fixed to the housing; according to a preferred embodiment, it can be provided that the at least one spring is supported on the one hand on the bolt slide and on the other hand on the spindle nut. Thereby, the effective length of the at least one spring can be kept small, as the spring can move with the assembly consisting of the spindle nut and the tongue slide. The length of the spring is thus independent of the position of the assembly of bolt slider and spindle nut relative to the part fixed to the housing. Thus, the effective spring length can be kept small when the at least one spring is supported on the one hand by the bolt slide and on the other hand by the spindle nut.

According to another embodiment, the catch element may have a closed position, wherein the blocking position is located between the closed position and the release position. Wherein in the latched position the strike slider allows the keeper element to move between its blocking position and its closed position. Thus, the catch element can be moved from its release position, past the blocking position, to the closed position. In the closed position, the fan is completely fixed to the frame as a result of the engagement of the catch element into the holding receptacle of the catch element and can be in fixed tension relative to the frame or in fixed tension relative to a seal provided on the frame. In the blocking position of the catch element, the fan is thus fastened with play to the frame, which effects a certain slotted ventilation, whereas in the closing position of the catch element, the fan is fastened fixedly to the frame or to a seal arranged along the frame, since this may be expedient for safety reasons or for the benefit of thermal insulation.

According to another embodiment, the deadbolt slider may have a latched position, wherein the latched position is located between the latched position and the unlatched position. Thus, the deadbolt slider can move from its unlocked position, through the locked position, to the latched position. Here, it may be provided that the catch slide and the catch element cooperate with a driving effect such that the catch element is pushed into the closed position when the catch slide is moved from its blocking position into its latching position. Thus, when the bolt slide is switched from its blocking position into its latching position by means of the spindle drive, this likewise results in the catch element being switched into its closed position, and in this position the catch element is fixed as a result of the self-locking of the spindle drive.

A certain deceleration can be achieved by the spindle drive so that the catch piece cooperates with a relatively weak motor. According to a further embodiment, in order to be able to further reduce the torque produced by the motor, a rotatably mounted transmission element (for example a partially toothed gear or a double-armed lever) can be provided on the body, by means of which the catch slide and the catch element interact with a driving effect. For example, when the transmission element is a double arm lever, then the deadbolt slider engages a long lever arm and the catch element engages a short lever arm, thereby allowing further reduction in the speed of the spindle transmission, and thus allowing a smaller or weaker motor to be employed.

According to a further embodiment, the catch slide and the catch element can interact with a drive effect via the transmission element such that the catch slide in its marking position can be deflected against the spring force in the direction of the unlocking position as a result of the movement of the catch element between its blocking position and its release position. Thus, when the catch element is moved back and forth between its blocking position and its release position, the movement of the catch element occurring is transmitted via the transmission element to the catch slide, so that the catch slide is deflected in the direction of its unlocking position.

Additionally or alternatively thereto, the catch slide and the catch element can interact with a driving effect via the transmission element such that the catch element occupies the closed position when the catch slide is moved from its latched position into its latched position. Thus, movement of the deadbolt slider is transferred to the catch element by the transmission element such that the catch element is urged into its closed position when the deadbolt slider is moved from its latched position to its latched position.

According to a further embodiment, it can be provided that the catch slide has a catch cam which, in the blocking position of the catch slide, engages behind a sliding cam provided on the catch element or the transmission element (hittergreifen) in order to prevent the catch element from being moved from its blocking position into its release position.

The latch cam of the sliding slide can have a sliding surface which is at least partially convexly curved and/or is provided as a bevel, which sliding surface, in the marked position of the latch slide, contacts a counter-sliding surface provided on the sliding cam, which can likewise be provided as a partial convexly curved and/or as a bevel. When the locking element is moved from its blocking position into its release position, the sliding surface is now slid on the sliding surface in a directional manner counter to the spring force of the spring in the direction of the unlocking position, which will result in the locking bolt slide being deflected in the direction of its unlocking position due to the at least partially convex curvature of the sliding surface and/or the design of the bevel. In this case, a clamping effect (umschnapbenwirkung) is achieved when the sliding cam slides on the latch cam, due to the at least partially convex and/or beveled design of the two cams. The catch element can thus be snapped between its release position and its blocking position when in the marking position of the catch slide, wherein it is both conditionally fixed in the release position and in the blocking position by the catch slide.

According to a further embodiment, the catch piece can be provided with a coupling lever by means of which the catch element is coupled with a driving effect to the bolt slide, wherein the coupling lever is both hingably coupled to the bolt slide (in particular to its bolt cam) and to the transmission element (in particular to its sliding cam).

Since the transmission element is rotatably mounted on the main body on the one hand and the coupling lever is connected both to the bolt slide and to the transmission element on the other hand, a change in the position of the articulated coupling point of the coupling lever on the bolt slide results in a change in the direction of movement of the coupling lever relative to the drive spindle or in the orientation relative to the axial direction of the drive spindle. Thus, when the bolt slide is moved from its blocking position into its latching position, the distance between the two articulated coupling positions of the coupling lever, which are articulated to the bolt slide and to the transmission element, increases, measured transversely to the direction of movement of the bolt slide. The coupling lever is thus deflected with an axial pushing which increases the articulated coupling position of the coupling lever on the bolt slide and thus causes the transmission element to pivot and the catch element to pivot through the transmission element.

Thus, the coupling lever involves a crank lever since the leverage of the coupling lever varies with the increase of the offset. Thus, when the bolt slide is brought into its latching position, the coupling lever deflection increases at this time, so that as the deflection of the coupling lever increases, an increasingly greater force or torque acts on the transmission element and thus on the catch element. In order to pull the fan or to be able to pull the catch element into its closed position, the required torque to pull the fan apart can be applied without an excessively powerful motor due to the toggle lever mechanism.

According to a further embodiment, in order that the occurring pushing movement of the bolt slider is not forcibly transferred to the catch element by the coupling lever of the bolt slider, the articulated coupling position on which the coupling lever is articulated to the bolt cam can have a long hole guide and a link pin guided in the long hole guide, and the long hole guide extends in the direction of the pushing path of the bolt slider, which makes it possible for the bolt slider to perform a lost motion movement within a certain boundary range, which is not transferred to the coupling lever and thus also not to the catch element.

Thus, the bolt slide can be pushed from its unlocked position to its marking position without simultaneously pivoting the shackle element from its release position to its blocking position. Likewise, the deadbolt slide can be moved from its marking position in the direction of its latched position without changing the position of the keeper element. When the bolt slide is moved from its marking position into its blocking position, the catch element is held in its blocking position by the slot guide.

As has been described previously, according to an embodiment, the catch member can be driven by a motor, so that a handle for driving the catch member is not required. However, according to another embodiment, in order to be able to drive the catch piece in the event of a power outage or motor failure, the catch piece may be latched or unlatched by means of an emergency drive mechanism. For this purpose, external teeth can be provided on the drive spindle and/or on the output shaft of the motor, wherein the body has at least one opening through which external teeth for emergency driving of the locking element can be reached from outside the body.

An emergency opening tool may be provided for the emergency drive, which emergency opening tool has a shaft which can extend through the opening into the body and forms a drive worm which is in driving engagement with the external toothing. The spindle drive can thus be driven manually by means of the emergency opening tool, so that the catch piece can be operated as before even in the event of a power failure or motor failure.

According to a further embodiment, the locking element is provided with a return spring, by means of which the locking element is pretensioned in the direction of the release position. Thus, when the bolt slider is moved into its unlocking position and thereby releases the catch element, the catch element automatically moves to its release position due to the pretensioning action of the spring.

According to a further embodiment of the invention, the motor can be embodied as an electric motor, wherein an electric energy store (in particular a battery or accumulator device) can be provided on the body for the energy supply. The locking element designed in this way is somewhat self-sufficient and in principle does not require any connection to other drive components. Thus, the installation is made particularly simple.

According to a further embodiment, in addition or alternatively to an electric energy store for the energy supply of the electric machine, an induction coil may be provided which is arranged on the body and through which the catch element can be inductively coupled with the energy source for supplying energy. Additionally or alternatively, the latching member may be inductively coupled with the signal source via an inductive coil to transmit data. Thus, the catch piece can be mounted anywhere on the fan, since cabling for energy supply and data transmission is not required at all.

According to a further embodiment, additionally or alternatively to the coupling lever, a ramp portion can be provided on the catch slide and/or on the catch element or the transmission element, by the effect of which ramp portion the catch element is pressed into the closed position when the catch slide is moved from its latching position into its latching position. For example, the latch cam of the latch slide may form the ramp portion such that the latch cam deflects the slide cam of the drive element when the latch slide is moved from its latched position to its latched position. Thus, by the deflection of the sliding cam, the transmission element and thus the catch element are deflected as well, so that the catch element is tensioned to its closed position by the wedge effect of the ramp portion.

Drawings

The invention will hereinafter be described, by way of example only, with reference to the accompanying drawings, in which,

FIG. 1 shows a top view of the latch of the present invention with the latch element in the release position and the deadbolt slider in the unlocked position, according to an embodiment;

FIG. 2 shows the latch element according to FIG. 1, but with the deadbolt slider in a armed position;

FIG. 3 shows the latch element of FIG. 1, but with the latch element in a blocking position and the deadbolt slider in a temporary marking position;

FIG. 4 shows the latch according to FIG. 1, but with the latch element in the blocking position and the deadbolt slider in the latched position;

FIG. 5 shows the shackle member according to FIG. 1, but wherein the shackle element is in a closed position and the deadbolt slide is in a latched position;

FIG. 6 shows a side view and a front view of the latch according to FIG. 1;

fig. 7 shows a cross-section of the catch piece according to fig. 1 in the area of the external teeth for the emergency opening function;

fig. 8 shows a modification of the catch piece according to fig. 1 to 7 with a toggle lever mechanism for the application of force to the catch element, wherein the catch element is in the blocking position; and

fig. 9 shows the catch element according to fig. 8, but wherein the catch element is in the closed position.

Detailed Description

Fig. 1 shows a top view of a catch piece 10 according to the invention, which catch piece 10 has an elongated body 12, which body 12 receives the individual components of the catch piece 10 and thus acts as a kind of housing. In particular, the body 12 has two side walls 13 (see fig. 6) opposite each other and extending in the longitudinal direction of the body 12, between which side walls 13 the various components of the catch member 10, which will be described in more detail below, are arranged. As can be seen in fig. 6, the body 12 has a relatively small width and constructional depth and can thus be mounted in a fitting groove of a fan fixed by means of the catch element 10.

Returning again to the schematic view of fig. 1, a claw-shaped catch element 14 pivotable about a pivot axis 15 is arranged on the body 12. The strike element 15 has a receiver 16 employing a single sided open slot, the width of the receiver 16 being sized for entry of a cylindrical strike element (not shown) configured to be secured to a window or door sash. In principle, however, it is also possible to provide that the body 12 is arranged to be secured to the fan and the bolt element is secured to the frame.

The latch element 14 has teeth 17 on opposite sides of the holding receptacle 16, the teeth 17 engaging with teeth 18, the teeth 18 being provided on a transmission element 19, the transmission element 19 being pivotally arranged on the body 12 about the pivot axis 11. The transmission element 19 forms a projection 20, referred to herein as a sliding cam, on the opposite side of the tooth 18, the function of the projection 20 being described in more detail below.

Furthermore, the locking element 10 has a movable locking tongue slide 21 in its longitudinal direction, which locking tongue slide 21 forms a locking tongue cam 22 on the side facing the transmission element 19, which locking tongue cam 22 cooperates with a sliding cam 20, as will also be described in more detail below.

Furthermore, the catch element 10 has a motor 23 which is arranged on the body 12, the motor 23 being coupled to the bolt slide 21 with a driving effect such that the bolt slide 21 can be moved in different directions depending on the steering of the motor 23. Further, the motor 23 drives a drive spindle 24 of a spindle transmission 25, wherein a spindle nut 26 arranged thereon is moved in a known manner in the longitudinal direction of the drive spindle 24 by rotation of the drive spindle 24. Wherein the lock tongue slide 21 is supported on the spindle nut 26 such that the lock tongue slide 21 can be moved in different directions along with the spindle nut 26 according to the steering of the drive spindle 24.

For the energy supply of the electric motor 23, the locking element 10 is provided with an energy store, for example a battery, arranged under the cover 27. Additionally or alternatively thereto, the catch element 10 may also be provided with an induction coil 39 (only schematically shown in fig. 1) which is likewise located under the cover 27, by means of which induction coil 39 the catch element 10 can be inductively coupled to an energy source for energizing the motor 23. The power supply to the motor 23 may be a wired connection.

Referring back to fig. 1, the tongue slide 21 is supported on the spindle nut 26 by two springs 28 times so that when the spindle nut 26 is stationary, the tongue slide 21 can be biased against the spring force of the springs 28 relative to the spindle nut 26. On the other hand, the spindle nut 26 can be moved relative to the tongue slide 21 when the tongue slide 21 is stationary. However, the relative movement between spindle nut 26 and bolt slide 21 is limited by two stops (unrecognizable) spaced apart from each other in the axial direction of the drive spindle, so that bolt slide 21 can be carried away by spindle nut 26 after reaching the respective stops.

In the embodiment shown here, two springs 28 are supported on the one hand on the bolt slide 21 and on the other hand on the spindle nut 26. Alternatively, the spring 28 can also be supported on the one hand on the bolt slide 21 and on the other hand on the part fixed to the housing.

Having described some of the main components of the locking element 10 according to the present invention in the foregoing, the function of the locking element 10 according to the present invention will be described below.

Fig. 1 shows the state of the catch piece 10 in which the catch element 14 is in its release position F, in which the claw of the catch element 14 extends through the opening 29 in the housing wall 13. In this state, the bolt element on the fan of the window to be fastened can slide into the holding receptacle 16, so that the catch element 14 pivots when the closing movement of the fan continues in the clockwise direction of the blocking position B of the catch element 14 as shown in fig. 4.

Since the catch element 14 and the transmission element 19 are engaged with each other by means of the two

teeth

17, 18, the transmission element 19 is thus pivoted anticlockwise. This pivoting movement of the catch element 14 and the transmission element 19 is thus possible in the state described in fig. 1, since the bolt slide 21 is in its unlocking position E. When the bolt slide 21 is pulled in the direction of the motor 23 by means of the spindle drive 25, the bolt slide 21 assumes its unlocking position E. In this unlocking position E, the sliding cam 20 of the transmission element 19 may not collide with the latch cam 22 of the latch slide 21, and thus the catch element 14 may be pivoted freely in the manner described above.

The locking element 14 is pretensioned into its release position F by means of a restoring spring, not shown here, which can act either directly on the locking element 14 or on the transmission element 19 and thus indirectly on the locking element 14.

When the catch element 14 has been pivoted from the release position F shown in the previously described embodiment of fig. 1 to the blocking position B shown in fig. 4, the catch element 14 can then be prevented from moving back into its release position F by the tongue slide 21, as shown in fig. 4. In fig. 4, the catch slide 21 is in its blocking position S, in which the catch slide 21 is elastically pressed by the spring 28. In this blocking position S, the latch cam 22 of the latch slide 21 engages behind the slide cam 20 of the transmission element 19, so that the catch element 14 is prevented from returning from its blocking position B shown in fig. 4 to its release position F.

However, it is also possible to monitor the blocking position B of the catch element 14 by means of a sensor, so that, after detection of the blocking position B, the bolt slide 21 is switched from the unlocking position E shown in fig. 1 to the locking position shown in fig. 4 by energizing the motor 23, in which the bolt cam 22 and the slide cam 20 are engaged behind each other.

Alternatively, it is also possible to switch the bolt slide 21 to the standby position W shown in fig. 2 by means of the spindle drive 25 beforehand by energizing the motor 23. In the standby position W, the latch cam 22 is in contact with the convexly arched sliding surface of the slide cam 20, wherein the latch slide 21 is elastically prestressed relative to the slide cam 20 in its standby position W by means of the spring 28.

In the standby position W of the locking bolt slide 21, the locking element 14 is pivoted from the illustrated release position F into its blocking position B according to fig. 4, the sliding cam 20 then slides with its convexly curved counter-sliding surface 30 on the end face of the locking bolt cam 22, whereby the locking bolt slide 21 is elastically deflected in the direction of its unlocking position E against the pretensioning force of the spring 28. Once the catch element 14 has reached its blocking position B and the slide cam 20 is thereby moved counter-clockwise past the latch cam 22, the latch slide 21 is pushed into its latching position S via its standby position W by the pretensioning force of the spring 28. According to fig. 4, in the blocking position S, the latch cam 22 engages behind the slide cam 20, whereby the catch element 14 is fixed in the blocking position B shown.

In order to enable the catch element 14 to be secured in its blocking position against a small opening force in terms of the marking function and conversely the catch element 19 can be pivoted back from its blocking position B into its release position F with a large opening force, the bolt slide has an intermediate position, referred to herein as the marking position T, between the blocking position S shown in fig. 4 and the unlocking position E shown in the drawing, as shown in fig. 3. In this marking position T, the catch slide 21 has the same relative position as in the locked position (fig. 4) with respect to the spindle nut 26, but the catch slide 21 is pulled back by a little in the direction of the unlocked position E by means of the spindle drive 25 or the spindle nut 26, as can be seen by comparing the respective positions of the catch slide 21 in fig. 3 and 4.

In the marking position of fig. 3, the sliding cam 20 abuts against a sliding surface 31 of the bolt cam 22, wherein the sliding surface 31 forms a bevel or is inclined to a bevel, so that the sliding block 21 is biased against the spring force of the spring 28 in the direction of its unlocking position E when the sliding cam 20 is pivoted clockwise as a result of the pivoting movement of the bolt element 14 in the counterclockwise direction to its release position F. Thus, when the opening force applied to the catch element 14 is sufficiently large, the tongue slider 21 is caused to be biased toward its unlocking position E against the holding resistance of the spring 28, and thereby releases the movement of the catch element 14 and thus the catch element 19. At this time, the slide cam 20 partially moves clockwise past the latch cam 22 and slides on the end surface thereof.

During this movement, the transmission element 19 initially receives a counterclockwise torque from the bolt slide 21. Due to the convex design of the sliding cam 20 with respect to the sliding surface 30, the torque acting in the counterclockwise direction decreases with increasing rotation of the transmission element 19 in the clockwise direction until it then increases again, but in the clockwise direction. This change in the torque experienced by the transmission element 19 by the bolt slider 21, due to the spring pretensioning force caused by the spring 28, results in a blocking (Umschnappen) of the catch element 14, so that in the marked position T of the bolt slider 21 the catch element 14 has two defined end positions, namely a release position F on the one hand and a blocking position B on the other hand.

Since the sliding cam 20, by way of its counter-sliding surface 30, abuts against the end face of the latch cam 22 in the release position F of the catch element 14, the catch element 14 can then be pivoted against the resistance force exerted by the spring 28 back into its blocking position B, in which the catch element 14 is positively fixed in the marking position T of the latch slide 21. Thus, in the marked position T of the catch slide 21, the catch slide 21 can be displaced in the direction of its unlocking position by the movement of the catch element 14 counter to the spring force of the spring 28.

In order to prevent the fan from bouncing off again after being forced to close in the marked position of the bolt slide 21, it can be provided that the position of the catch element 14 is monitored by means of a sensor in the marked position T of the bolt slide 21. In this case, when the sensor detects a pivoting of the catch element 14 from its release position F into its blocking position B, the bolt slide 21 can then be briefly switched by means of the spindle drive 25 into its locking position S into a temporary holding position in which the bolt slide 21 cannot be pushed back into the direction of the unlocking position E due to the sliding cam 20 of the drive element 19. This temporary holding position can only be used briefly to prevent the fan from bouncing off. Thereafter, the bolt slide 21 is moved back again into its marking position T.

The blocking position B of the catch element 14 is positioned angularly such that the fan does not abut sealingly against the frame, so that a certain gap ventilation is also provided. However, the catch element 14 can be pivoted from the release position F, through the blocking position B, into the closed position shown in fig. 5, so that the fan is sealingly secured in tension with the frame.

For this purpose, the catch slide 21 is moved further from the blocking position S shown in fig. 4 by means of the spindle drive 25 in the direction of the transmission element 19 or the catch element 14. In this case, first, the spindle nut 26 is moved in the direction of the catch slide 21 until the spindle nut 26 strikes the catch slide 21, so that the catch slide 21 is moved from its blocking position S into its latching position V when the spindle nut 26 continues to move. During this movement, the sliding cam 20 continues to ride (reite) on the sliding surface 31 of the latch cam 22, which causes the transmission element 19 to pivot further in the counterclockwise direction. Thus, the catch element 14 is pivoted in a clockwise direction to its closed position SS, thereby firmly pulling the fan towards the frame. Since the distance between the position of the sliding surface 31 of the latch cam 22 in contact with the slide cam 20 and the pivot axis 11 of the transmission element 19 is greater than the distance between the pivot axis 11 of the transmission element 19 and the force transfer position between the

teeth

17, 18, the transmission element 18 acts as a decelerator. However, the transmission element 19 may equally be replaced by a double-armed lever with a lever arm of different length.

When the fan needs to be opened again, the catch slide 21 is then at least briefly moved back into its unlocking position E shown in fig. 1, in which the catch slide 21 allows the catch element 14 to be pivoted back into its release position F by means of a return spring which acts either on the catch element 14 or on the transmission element 19.

In the previously described embodiment, the catch element 14 is pulled toward its closed position SS by the sliding cam 20 being displaced by the beveled sliding surface 31 of the latch cam 22 when the latch slide 21 is moved toward its latching position V.

Alternatively, the transmission element 19 is coupled to the bolt slide 21 by a toggle lever mechanism, which acts to shift the catch element 14 in the direction of its closed position when the bolt blank 21 is moved to its latching position V. According to fig. 8 and 9, the toggle lever mechanism comprises a coupling lever 32, which coupling lever 32 is coupled on the one hand to the bolt slide 21 (in particular to its bolt cam 22) and on the other hand to the transmission element 19 (in particular to its sliding cam 20). The articulated coupling position of the coupling lever 32 to the bolt slide 21 is formed by a coupling pin 33, wherein the coupling pin 33 is arranged in a pushing manner in a slot 34 provided in the bolt slide 21. The slot guides 33, 34 allow a displacement of the catch slide 21 in the direction of its unlocking position E when the catch slide 21 is in the marking position T, which is also necessary for the marking function.

When the spindle nut 26 moves from the position shown in fig. 8 in the direction of the tongue slider 21, the spindle nut 26 abuts against the tongue slider 21, and the tongue slider 21 is carried away by the spindle nut 26. As the spindle nut 26 continues to move, the link pin 23 then abuts the end of the slot 34 that faces the spindle nut 26, so that as the spindle nut 26 continues to move, the coupling lever 32 pivots clockwise about its articulated coupling position on the transmission element 19, so that the measurement size measured between the two articulated coupling positions of the coupling lever 32 transversely to the direction of movement of the locking bolt slide 21 increases. This also causes the transmission element 19 to pivot in a counter-clockwise direction and the catch element 14 to thereby pivot in a counter-clockwise direction towards its closed position SS, see fig. 9.

In order to be able to drive the locking element 10 in spite of the self-locking nature of the spindle drive 25 in the event of a power failure or possible failure of the motor, the locking element 10 according to the invention is provided with an emergency drive function, see in particular fig. 7. For this purpose, the drive spindle 24 can be reached from outside the housing 12, so that the drive spindle 24 can be driven by means of the emergency opening tool 36.

For this purpose, as can be seen in particular from fig. 6, an opening 35 is provided in the body 12, from which opening 35 an emergency opening tool 36 can extend into the body 12. In order to be able to rotate the drive spindle 24 by means of the emergency opening tool 36, external teeth 37 are provided on the drive spindle 24. The emergency opening tool 36 has a drive worm 38 which can extend through the opening 35 into the interior of the housing such that by engaging the drive worm 38 with the teeth 37, the drive worm 24 is rotated by rotating the emergency opening tool 36 and thereby can drive the catch member 10 itself in the event of a power failure.

Reference numerals

10. A locking piece;

11 19;

12. a body/housing;

13. a sidewall;

14. locking an original;

15 14;

16. a holding container;

17 14;

18 19;

19. a transmission element;

20 19;

21. a locking slide;

22 21;

23. a motor;

24. driving a main shaft;

25. a main shaft transmission member;

26. a spindle nut;

27. a cover;

28. a spring;

29. an opening in a wall of the housing;

30 20 (the para-surface);

31 22;

32. a connecting lever;

33. a link pin;

34. a long hole;

35. an opening;

36. an emergency opening tool;

37. external teeth;

38. driving a worm;

39. an induction coil;

e, unlocking the position;

s locking position;

t marking the position;

a V-lock position;

f a release position;

an SS closed position;

a B blocking position;

a W standby position;

r is the opening direction.

Claims

1. A catch piece (10) for a window, door or the like, wherein the window, door or the like has a frame and a leaf movable relative to the frame, wherein the catch piece comprises:

a main body (12) arranged to be fastened to the frame or the fan;

A catch element (14) rotatably arranged on the main body (12), the catch element (14) defining a holding receptacle (16) for a bolt element fastened on the fan or the frame, and the catch element (14) being movable between a release position (F) releasing the bolt element in an opening direction (R) of the fan and a blocking position (B) blocking the bolt element in the opening direction (R); and

-a bolt slide (21), which bolt slide (21) is guided in the body (12) in a pushable manner between a locked position (S) and an unlocked position (E), and is pretensioned by at least one spring (28) in the direction of the locked position (S) of the bolt slide (21);

wherein the bolt slide (21) in the blocking position (S) prevents the catch element (14) from moving from the blocking position (B) to the release position (F), and the bolt slide (21) in the unlocking position (E) allows the catch element (14) to move between the blocking position (B) and the release position (F); and

wherein the bolt slide (21) has a marking position (T) between the locking position (S) and the unlocking position (E), in which marking position (T) the bolt slide (21) can be displaced in the direction of the unlocking position (E) against the spring force of the spring as a result of the movement of the locking element (14) between the blocking position (B) and the release position (F).

2. A locking piece according to claim 1,

wherein the catch piece (10) comprises a motor (23) arranged on the main body (12), the motor (23) is coupled to the bolt slider (21) in a driving effect, so that the bolt slider (21) approaches or moves away from the unlocking position (E) according to the steering direction of the motor (23).

3. The locker of claim 1 or 2,

wherein the catch piece (10) comprises a motor (23) with an output shaft arranged on the main body (12), the output shaft is connected with a main shaft transmission piece (25) in a driving effect, and the main shaft transmission piece (25) converts the rotation of the output shaft of the motor (23) into the pushing movement of the lock tongue sliding block (21).

4. A locking piece according to claim 3,

the spindle drive (25) comprises a drive spindle (24) driven by the motor (23) and a spindle nut (26), wherein the spindle nut (26) carries the bolt slide (21).

5. A locking piece according to claim 4,

wherein the bolt slide (21) is coupled to the spindle nut (26) such that the bolt slide (21) can be displaced in the direction of the unlocking position (E) against the spring force of the spring (28) relative to the spindle nut (26) in the marking position (T) of the bolt slide (21).

6. A locking piece according to claim 5,

wherein the offset of the bolt slide (21) relative to the spindle nut (26) is defined by two stops spaced apart from each other in the axial direction of the drive spindle (24).

7. A locking piece according to claim 1,

wherein the at least one spring (28) is supported on the one hand on the bolt slide (21) and on the other hand either on a part which is not movable relative to the body (12) or on a spindle nut (26), wherein the bolt slide (21) is pretensioned by the at least one spring (28) in the direction of the blocking position (S) of the bolt slide (21).

8. A locking piece according to claim 1,

wherein the catch element (14) has a closed position (SS), wherein the blocking position (B) is located between the closed position (SS) and the release position (F), wherein the locking tongue slider (21) in the locked position (S) of the locking tongue slider (21) allows the catch element (14) to move between the blocking position (B) of the catch element (14) and the closed position (SS) of the catch element (14).

9. A locking piece according to claim 8,

Wherein the bolt slide has a latching position (V), wherein the latching position (S) is located between the latching position (V) and the unlocking position (E), wherein the bolt slide (21) and the catch element (14) cooperate with a drive effect such that the catch element (14) occupies the closed position (SS) when the bolt slide (21) is moved from the latching position (S) of the bolt slide (21) to the latching position (V) of the bolt slide (21).

10. A locking piece according to claim 1,

wherein a rotatably mounted transmission element (19) is provided on the body (12), the catch slide (21) and the catch element (14) interacting with each other with a driving effect via the transmission element (19).

11. A locking piece according to claim 10,

wherein the locking bolt slide (21) can be displaced in the direction of the unlocking position (E) against the spring force of the spring (28) and/or the locking element (14) can take up a closed position (SS) when the locking bolt slide (21) is moved from the locking position (S) of the locking bolt slide (21) to the latching position (V) of the locking bolt slide (21) in that the marking position (T) of the locking bolt slide (21) is displaced by the locking element between the blocking position (B) of the locking element and the release position (F) of the locking element.

12. The locking element according to claim 10 or 11,

wherein the transmission element (19) is an at least partially toothed gear or lever.

13. A locking piece according to claim 1,

wherein the catch slide (21) has a catch cam (22), the catch cam (22) engaging behind a sliding cam (20) provided on the catch element (14) or on the transmission element (19) in the blocking position (S) of the catch slide (21), so that the catch element (14) is prevented from moving from the blocking position (B) of the catch element (14) to the release position (F) of the catch element (14).

14. The locking member of claim 13,

wherein the latch cam (22) of the latch slide (21) forms a slide surface (31), the slide surface (31) being in contact with a counter-slide surface (30) provided on the slide cam (20) in the marked position of the latch slide (21), wherein the counter-slide surface (30) slides on the slide surface (31) against the spring force of the spring (28) when the catch element (14) is moved from the blocking position (B) of the catch element (14) to the release position (F) of the catch element (14).

15. The locking member of claim 13,

Wherein a coupling lever (32) is provided, by means of which coupling lever (32) the catch element (14) is coupled to the bolt slide (21) in a driving manner, wherein the coupling lever (32) is both coupled to the bolt slide (21) and to the transmission element (19) in an articulated manner.

16. The locking member of claim 15,

wherein the connecting lever (32) is hinged to the latch cam (22) of the latch slide block (21).

17. The locking element according to claim 15 or 16,

wherein the coupling lever (32) is hingedly coupled to a sliding cam (20) of the transmission element (19).

18. The locking member of claim 15,

wherein the distance between two articulated coupling positions of the coupling lever (32) on the coupling element (19) and the bolt slider (21) increases when the bolt slider (21) is moved from the blocking position (S) to the latching position (V), wherein the distance is measured transversely to the direction of movement of the bolt slider (21).

19. The locking member of claim 15,

wherein the articulated coupling position of the coupling lever (32) to the tongue slider (21) comprises a long hole guide (34) extending in the direction of the pushing path of the tongue slider (21) and a link pin (33) guided in the long hole guide (34).

20. A locking piece according to claim 11,

wherein a ramp is provided on the catch slide (21) and/or on either the catch element (14) or on the transmission element (19), by the effect of which ramp the catch element (14) assumes the closed position (SS) when the catch slide (21) is moved from the blocking position (S) of the catch slide (21) to the latching position (V) of the catch slide (21).

21. A locking piece according to claim 4,

wherein external teeth (37) are provided on the drive spindle (24) and/or on the output shaft of the motor (23), wherein the body (12) has at least one opening (35), through which opening (35) the external teeth (37) for emergency driving of the locking element (10) can be reached from outside the body (12).

22. The locking member of claim 21,

wherein an emergency opening tool (36) for emergency driving, which has a shaft, through which a drive worm (38) is arranged, extends through the opening (35), the external toothing (37) being in driving engagement with the drive worm (38).

23. A locking piece according to claim 1,

Wherein a return spring is provided, by means of which the catch element (14) is pretensioned in the direction of the release position (F).

24. The locking piece according to claim 2,

wherein the motor (23) is embodied as an electric motor, wherein an electric energy store for the energy supply of the electric motor is arranged on the main body (12).

25. The catch piece according to claim 24,

wherein the electric energy storage is a battery device or a storage battery device.

26. A locking piece according to claim 1,

wherein the catch member (10) comprises an induction coil (39) arranged on the body (12), through which induction coil (39) the catch member (10) is inductively couplable with an energy source to provide energy and/or with a signal source for data transmission.