EP4051858B1 - Casement lock for locking a door - Google Patents

Description

The invention relates to a sash for locking a door, with a sash housing, an actuating element rotatably mounted on the sash housing and a locking element coupled to the actuating element, which is translationally movable in a first angular range of the actuating element and rotationally movable in a second angular range of the actuating element.

Such sashes are used in many areas of technology to lock doors, with the term “door” in the context of this application not only doors in the narrower sense, but all types of lockable ones Closing elements, such as in particular windows, hatches, flaps, covers, etc., should include.

Known sashes have a fixed sash housing, via which the sash can be attached to the door. An actuating element rotatably mounted on the sash housing is coupled to a locking element which is also rotatably mounted, so that the door can be opened or locked accordingly by rotating the actuating element between its open and closed positions.

In the case of sashes with a simple design, the coupling of the actuating element to the locking element is rigid, so that the locking element always follows the movements of the actuating element.

In addition to these structurally simple sashes with rigid coupling, sashes are also known in which the locking element is also moved translationally along its axis of rotation in addition to its rotational movement. Such sashes are used in particular in applications in which a reliable seal of the closed door is to be produced by compressing a door seal made of a rubber-elastic material. The translational movement of the locking element is used with these sashes to compress the door seal in a defined manner. This type of sash lock is therefore often referred to as “turn-clamp locks”.

To open the door locked with such a sash, the actuating element is rotated in the opening direction. During this actuation, the locking element initially moves translationally in a first angular range of the actuating element, whereby the compression of the The seal clamped between the door frame and the door leaf is eliminated or at least reduced. In the next step, upon further actuation of the actuating element, the locking element is rotationally moved into its open position in a second angular range, whereby the door is released accordingly and the door leaf can be pivoted relative to the door frame.

Although this type of sash lock is characterized by good locking properties, its structure is sometimes complex and is not suitable for all applications.

The DE 10 2019 102 411 relates, for example, to a sash lock with a complex structure, in which the actuating element, the sash lock housing and the locking element are connected to one another via several threads to achieve the desired turning-clamping functionality.

Next shows the DE 198 14 297 A1 a sash for locking a door, with a sash housing, an actuating element rotatably mounted on the sash housing and a locking element coupled to the actuating element.

However, not only the desired turning and clamping functionality is achieved using the appropriate threaded connections. The self-locking of the thread also ensures that the components arranged movably relative to the stationary sash housing of the sash are axially secured in every position, so that different pressure conditions on the inside and outside of the sash do not lead to unwanted axial movement of the locking element and This can lead to at least partial opening of the door. In order to give the operator feedback about the closed state of the door, the threaded connection between the actuating element and the sash housing, as a result of which the actuating element moves axially relative to the sash housing during actuation, is also used as an opening indicator. The distance of the actuating element from the sash housing, which changes depending on the opening or closing position of the sash is indicated by an indicator ring designed in a signal color.

Even if the operator receives good feedback about the closed state of the sash lock through the axial movement of the actuating element, the axial movement relative to the sash lock housing has proven to be problematic for some applications. Because of this movement, there is a risk that contaminants, dust, dirt, etc. will be introduced into the sash housing from the outside, which is particularly problematic in applications in the hygiene sector, such as in the medical or food sector.

The invention is therefore based on the object of creating a quarter turn that is suitable for applications in the hygiene sector and is characterized by a simple structure.

This task is achieved in a sash of the type mentioned in that the actuating element is axially secured relative to the sash housing in the first angular range via a securing means and is axially unlocked in the second angular range via the securing means.

This design results in a simple sash lock with a turn-clamping function, which can also be easily used in the hygiene sector. Due to the securing of the actuating element relative to the sash housing, the actuating element cannot be moved axially in the first angular range relative to the sash housing. The rotation of the actuating element can therefore be converted into a translational movement of the locking element without the actuating element moving axially relative to the sash housing with the associated hygiene problems. In the second angular range It is not necessary to axially secure the actuating element relative to the sash housing, since in this angular range axial securing can be done indirectly via the rotational movement of the locking element. The axial unlocking of the actuating element in the second angular range also allows a significantly simplified structure and also improved assembly properties compared to a construction in which the actuating element is axially secured over its entire actuation angle.

An advantageous development of the invention provides that the actuating element is coupled to the locking element via a coupling shaft. The coupling shaft couples the actuating element to the locking element in such a way that the movement of the actuating element can be transferred to the locking element in a structurally simple manner.

In this context, it has proven to be advantageous if the coupling shaft is rigidly connected to the locking element. In this way, a transmission of the movement of the coupling shaft to the locking element can be ensured in a structurally simple manner. With such a rigid connection, the locking element carries out the movement with the coupling shaft. With such a configuration of the connection, the coupling shaft can be moved with the locking element in order to generate the translational movement relative to the actuating element. The connection between the coupling shaft and the locking element can be designed to be non-positive, positive and/or cohesive. In particular, it can be advantageous if the locking element is arranged in a form-fitting manner on the coupling shaft and then secured. It is, for example, conceivable that the locking element is plugged onto the coupling shaft in a form-fitting manner and then secured with a screw. Such a design in particular enables the quick assembly and disassembly of the locking element from the coupling shaft.

A particularly advantageous development of the invention further provides that the actuating element is coupled to the coupling shaft via a gear to generate the translational and rotational movement of the locking element. In this way, the rotational movement of the actuating element can be converted into the translational and rotational movement of the locking element. The transmission can also be designed in such a way that the movement of the actuating element can be transferred in an over- or under-reduction manner. It is therefore conceivable that an actuation of the actuating element in the second angular range is transmitted one-to-one into a rotational movement of the locking element. For example, if the movement element is rotated through 90°, the locking element is pivoted accordingly through 90°.

In connection with the transmission, it has proven to be advantageous if the transmission has a first transmission part on the actuating element side and a second transmission part on the coupling shaft side. This makes it possible to achieve a structurally simple kinematic connection between the actuating element and the coupling shaft. It is possible here for the first gear part to carry out the rotational movement of the actuating element and the second gear part to carry out the translational and rotational movement of the locking element.

Furthermore, it is advantageous if the first gear part is designed as a guide slot and the second gear part is designed as a driver that can be moved over the guide slot. By arranging the guide slot at an angle relative to the axis of rotation of the actuating element, which is axially secured in this angular range via the securing means, it is possible to move the driver axially. With rotational movement of the actuating element The guide slot, which runs obliquely relative to the axis of rotation of the actuating element, can be moved accordingly in a rotational manner over the axially movable driver. The guide slot can be particularly advantageously designed in such a way that the driver and the guide slot are moved relative to one another in the first angular range and together with one another in the second angular range. Furthermore, it is advantageous if the driver is connected to the coupling shaft, so that it can be taken along by the driver and is moved accordingly with the driver. The driver can in particular be designed as a locking pin. The guide slot can in particular be designed spirally.

In this context, it has also proven to be advantageous if the first gear part is designed as an integral part of the actuating element and the second gear part is arranged on the coupling shaft. This can enable a particularly simple assembly of the sash, since there is a small number of parts of the sash combined with little assembly effort. It is possible for the second gear part to be connected to the second gear part at the same time during assembly during the arrangement on the coupling shaft, so that an additional work step is eliminated.

For a hygienic design of the sash, it has proven to be advantageous if the gear is arranged completely within the sash housing. This allows the gearbox to be protected against external influences, such as dust and moisture in particular. In this context, it is particularly possible for the gear to be arranged within the sash housing even after the translational and rotational movement of the locking element has taken place.

It has also proven advantageous if the coupling shaft is biased relative to the actuating element via a spring, in particular a compression spring. The preload can ensure a play-free transmission of the movement of the actuating element to the coupling shaft. The spring can in particular be designed as a compression spring, since in this way the preload between the coupling shaft and the actuating element can be achieved in a structurally simple manner. The preload of the spring can act in a particularly advantageous manner in the axial direction of the sash, in particular in the axial direction of the actuating element and the coupling shaft.

A further advantageous development of the invention provides that the sash has a pin guide for translational guidance of the locking element in the first angular range of the actuating element. Through the pin guide, it can be achieved in a structurally simple manner that the locking element is guided translationally in the first angular range. A rotational movement is prevented.

In connection with the design of the pin guide, it has proven useful if the pin guide has a guide pin oriented on the coupling shaft, transversely to its shaft axis. The coupling shaft serves to transmit the movement of the actuating element to the locking element. By means of the guide pin arranged on the coupling shaft, the locking element can be guided translationally in the first angular range by translationally guiding the coupling shaft connected to the locking element. The guide pin, which is oriented transversely to the shaft axis, can be designed, for example, as part of the coupling shaft.

In this context, it is also advantageous if the guide pin in the first angular range fits into a pin groove of the sash housing intervenes. Due to the guide pin guided in the pin groove, the pin guide can enable the translational guidance of the locking element in the first angular range of the actuating element with little additional design effort in production. For example, it is conceivable that the pin groove is designed as a groove extending parallel to the axis of the sash housing in order to enable translational guidance.

A particularly advantageous further development of the invention provides that the securing means has at least two securing contours designed to correspond to one another. The securing contours allow the axial securing and axial unlocking of the actuating element to be implemented in a structurally space-saving manner. In a particularly advantageous manner, the securing contours can be designed to correspond to one another.

In this context, it is particularly advantageous if a securing contour is arranged on the actuating element and a securing contour is arranged on the sash housing. By rotating the actuating element, the securing contours can be engaged and/or disengaged, so that the actuating element is secured and unlocked in a correspondingly positive manner in the axial direction. In this context, it is possible, for example, for the securing contours to be designed in the manner of a non-latching bayonet lock. To arrange the securing contours on the actuating element and sash housing, it is also possible to design the first securing contour as an integral part of the actuating element and the second securing contour as an integral part of the sash housing.

In this context, it has proven to be particularly advantageous if the securing contours are arranged relative to one another in such a way that the Securing contours are in engagement with one another in the first angular range of the actuating element and are disengaged in the second angular range of the actuating element. In this way, a particularly simple assembly of the sash lock can be achieved, since the actuating element can be positioned axially in the sash lock housing without the securing contours engaging with one another. If the actuating element is aligned by rotation within the sash housing after axial positioning during assembly, the securing contours come into engagement and the actuating element is secured relative to the sash housing, so that further assembly of the sash housing can be carried out in a simplified manner.

Furthermore, in connection with the securing contours, it is advantageous if the securing contours each have at least one mounting opening in the circumferential direction for mounting the actuating element in the axial direction on the sash housing. This makes it possible in a structurally simple manner for the securing contours to be in engagement in the first angular range and out of engagement in the second angular range.

It has also proven to be particularly advantageous if the one securing contour is arranged on an end face of the actuating element facing the locking element and/or a securing contour is arranged on an inner lateral surface of the sash housing. As a result, the securing contours of the actuating element and the sash housing can be brought into engagement and/or disengagement in a structurally simple manner. The arrangement of the securing contour on the front side of the actuating element and the inner surface of the sash housing also results in a compact structure.

Furthermore, it has proven to be advantageous if the securing contour is designed as a groove arranged on the inner lateral surface and extending over part of the circumference of the inner lateral surface and the securing contour is designed as a securing element engaging in the groove, in particular as a type of securing hook.

An advantageous embodiment of the invention that has proven itself in practice provides that the locking element has a locking tongue.

In connection with the design of the locking element, it is also advantageous if the locking element has a stop lug for limiting the rotational movement of the locking element. The stop lug allows the rotational movement of the locking element to be limited by striking against the sash housing after the locking element has been pivoted. In this context, it has therefore proven to be advantageous if the sash housing has a stop for striking the stop lug. In this way, the rotational movement, in particular its angle, can be determined. In connection with the rotational movement of the locking element, it has proven particularly useful if this corresponds to the second angular range of the actuating element, in particular 90°.

For using the sash in the hygiene sector, it has also proven extremely useful if the sash has a sealant, in particular a sealing ring, for sealing the actuating element from the door. This can prevent dirt, such as dust or moisture, from getting into the interior of the sash housing. Ring-shaped compartment seals are particularly possible as sealants. It can be particularly advantageous if the sealant is used at the Assembly experiences slight crushing by the actuating element, so that the sealing effect can be increased.

It is particularly advantageous if the actuating element has a contact area for flat contact of the actuating element on the sealant. The contact area ensures that the actuating element contacts the sealant in a uniform, flat manner so that the sealing effect can be achieved. It is structurally particularly favorable if the contact area is designed as an integral part of the actuating element.

To attach the sash housing to the door, it is particularly advantageous if the sash housing has an external thread. The sash housing can be screwed to the door via this external thread. In particular, it is possible to insert the sash housing through an opening in the door and then secure it using a nut via the external thread.

A further advantageous, intuitively operable embodiment is characterized in that the first angular range and the second angular range of the actuating element are the same size. The actuating element can be continuously rotated in one movement in the first angular range and in the second angular range. In the first angular range, the translational axial movement of the locking element can be achieved by the rotational actuation, i.e. rotary actuation, of the actuating element. In the second angular range, the rotational movement of the locking element can be achieved by the rotary actuation of the actuating element, as is already known to the operator from other rotary clamping locks.

Fig. 1a, 1b

ein Ausführungsbeispiel eines erfindungsgemäßen Vorreibers in Explosionsdarstellung sowie in montiertem Zustand in perspektivischer Ansicht,

Fig. 2a, 2b, 2c

Draufsichten des Vorreibers in verschiedenen Stellungen,

Fig. 3a, 3b, 3c

Schnittansichten des Vorreibers gemäß den in Fig. 2a, 2b, 2c mit A-A bezeichneten Schnitten,

Fig. 4a, 4b, 4c

Schnittansichten des Vorreibers gemäß den in Fig. 2a, 2b, 2c mit C-C bezeichneten Schnitten,

Fig. 5a, 5b

das Betätigungselement in perspektivischen Ansichten,

Fig. 6a, 6b

das Vorreibergehäuse in einer Vorderansicht und einer Schnittansicht gemäß dem in Fig. 6a mit D-D bezeichneten Schnitt und

Fig. 7

das Vorreibergehäuse mit darin angeordnetem Betätigungselement in einer Schnittansicht.

Further details and advantages of sashes according to the invention are explained below using an exemplary embodiment with the help of the accompanying drawings. Show in it:

Fig. 1a, 1b

an exemplary embodiment of a sash lock according to the invention in an exploded view and in the assembled state in a perspective view,

Fig. 2a, 2b, 2c

Top views of the quarter turn in various positions,

Fig. 3a, 3b, 3c

Sectional views of the quarter turn according to the in Fig. 2a, 2b, 2c cuts marked AA,

Fig. 4a, 4b, 4c

Sectional views of the quarter turn according to the in Fig. 2a, 2b, 2c cuts marked CC,

Fig. 5a, 5b

the actuating element in perspective views,

Fig. 6a, 6b

the sash housing in a front view and a sectional view according to in Fig. 6a cut marked DD and

Fig. 7

the sash housing with the actuating element arranged therein in a sectional view.

The sashes 1 shown in the figures are used in various areas of technology and are particularly suitable for locking doors 100, the seals of which are compressed during locking.

To lock the door 100, the actuating element 3 is actuated by rotation. As a result, a locking element 4 designed in the manner of a locking tongue is first moved in rotation, after which the door leaf of the door can no longer be opened. The locking element 4 is then moved translationally, whereby the door leaf is tensioned against the door frame and a door seal arranged between the door leaf and the door frame is compressed. In this respect, this type of quarter turn is also referred to as “turn-clamping locks”.

The sash lock 1 is operated manually by a user. For this purpose, the actuating element 3, which is accessible to the user from one side of the door 100, is actuated in a rotational manner. In the exemplary embodiment, the rotary operation can be carried out, for example, using a suitable tool or a key. It is also conceivable to use permanently mounted handles, swivel handles or similar elements.

The actuating element 3 can be actuated over a total actuation angle of 180°. The actuation angle is divided into a first angular range α and a second angular range β. The angular ranges α, β are each 90° in the exemplary embodiment, although different angular ranges α, β are also possible. It would also be conceivable to make the actuation angle larger or smaller than 180°.

In the locked state of the door 100, the locking element 4 is initially moved translationally by actuating the actuating element 3 in the first angular range α, see also 3a and 3b as well as 4a and 4b. When the actuating element 3 is further actuated, the locking element 4 is moved rotationally in the second angular range β, see also 3b and 3c as well as 4b and 4c. This therefore results in the opening or unlocking process of the sash lock 1, that the locking element 3 is first moved axially and then pivoted. For the locking process of the door 100 with the sash lock 1, the sequence of movements is reversed to the unlocking process.

So that the actuating element 3 is not over-twisted during the locking process, the locking element 4 has a stop lug 10, which can strike a stop 11 of the sash housing 2 accordingly. A stop limiting the operating angle is also provided in the other direction.

The actuating element 3 and the locking element 4 are connected to one another via a gear 8 and a coupling shaft 6.

The coupling shaft 6 is firmly connected to the locking element 4 at its end on the locking element side. The connection is a form fit. The connection is secured via a screw 20. At the end on the actuating element side, the coupling shaft 6 is coupled to the actuating element 3 via the gear 8.

The gear 8 transmits the rotational movement of the actuating element 3 to the coupling shaft 6 and thus the locking element 4. The gear 8 has a first gear part 8.1 designed as a guide slot on the actuating element 3 and a second gear part 8.2 designed as a driver on the coupling shaft 6. The driver and the guide slot of the gear 8 are engaged, so that the movement of the actuating element 3 can be converted into the movement of the locking element 4.

For this purpose, the guide slot 8.1 is aligned obliquely with respect to the axis of rotation of the actuating element 3 and together with the actuating element 3 rotatable, but axially fixed. The driver 8.2 is arranged non-rotatably in the first angular range α, but is axially movable with the coupling shaft 6. When the actuating element 3 is rotated, the guide slot 8.1 rotates over the non-rotatable driver 8.2, so that its axial portion ensures a corresponding axial movement of the driver 8.2.

So that the driver 8.2 is held in a rotationally fixed manner in the first angular range α of the actuating element 3, the coupling shaft 6 has a guide pin 7.1. The guide pin 7.1 extends transversely to the axis of the coupling shaft 6, i.e. in the radial direction. Together with a correspondingly designed pin groove 7.2, the guide pin 7.1 forms a linear guide designed as a pin guide 7. The pin guide 7 serves for the translational guidance of the coupling shaft 6 and thus of the locking element 4 in the first angular range α. The pin groove 7.2 is designed as part of a sash housing 2 and runs parallel to its axis, cf. Fig. 6a, 6b .

The length of the pin groove 7.2 corresponds to the axial portion of the oblique guide slot 8.1, i.e. H. the axial extent of the guide slot 8.1. In this way, the locking element 4 is prevented from rotating in the first angular range α and is moved exclusively in a translational manner until the guide pin 7.1 emerges from the pin groove 7.2 when the second angular range β is reached and releases the rotational movement. In this position, the driver 8.2 has reached one end of the guide slot 8.1, which is why the coupling shaft 6 follows the rotational movements of the actuating element 3. In this way, the locking element 4 can now be rotated until its open position is reached.

The sash housing 2 is arranged between the actuating element 3 and the locking element 4 and protects the inside Coupling shaft 6 and the gearbox 8 from external environmental influences. The gear 8 is completely surrounded by the sash housing 2, regardless of the rotational position of the actuating element 3, i.e. regardless of whether it is in the first angular range α or in the second angular range β, see also Fig. 3a, 3b, 3c and 4a, 4b, 4c . The coupling shaft 6 is only partially received by the sash housing 2 and moves in the first angular range α similar to a telescopic rod relative to the sash housing 2.

The actuating element 3 is rotatable and axially fixed on the sash housing 2.

A securing means 5 is provided for axially securing the actuating element 3. The securing means 5 serves to axially secure the actuating element 3 in its first angular range α and to axially unlock it in its second angular range β. In the first angular range α, the locking element 4 is moved translationally via the gear 8, for which it is necessary to secure the actuating element 3 axially. The securing means 5 is used for this purpose. In the second angular range β, in which the locking element 4 is pivoted, the actuating element 3 is also axially secured, but not via the securing means 5. In the second angular range β, the axial securing of the actuating element 3 takes place indirectly via the coupling shaft 6 by pivoting an element rotatable with the coupling shaft 6 behind an element arranged on the sash housing 2.

In the exemplary embodiment, the actuating element 3 is axially secured in the second angular range β via the guide pin 7.1. As soon as this has left the pin groove 7.2, it is pivoted together with the coupling shaft 6 and the locking element 4. The guide pin 7.1 comes into contact behind an axial end face of the sash housing 3 and in this way ensures axial securing.

This results in a kind of staggered securing of the actuating element 3 without interruption, which is secured in the first angular range α via the securing means 5 and in the second angular range β via the guide pin 7.1.

Unlocking the actuating element 3 in the second angular range β allows a structurally simple and easy-to-assemble design of the sash 1, which will become even clearer below in the description of the processes involved in assembling the sash 1.

The securing means 5 has two securing contours 5.1, 5.2. The first securing contour 5.1 is arranged on a locking element-side end face 18 of the actuating element 3 and is formed as an integral part of it, cf. also Fig. 5a, 5b . The second securing contour 5.2 is arranged on the inner lateral surface 16 of the sash housing 2 and is also designed as an integral part of it, cf. Fig. 6a, 6b .

When assembling the sash lock 1, a sealant 13 can first be pushed onto the actuating element 3, cf. Fig. 1a . The sealant 13 is used on the door 100 in the mounted state of the sash 1 to seal between the door 100 and the actuating element 3. Particularly when the sash 1 is used in the hygiene sector, dirt, germs, dust, moisture or the like can be easily and reliably removed Species should be kept away from an area with high hygiene requirements.

The coupling shaft 6 is connected to the actuating element 3 via the gear 8. The coupling shaft 6 is inserted into the actuating element 3 pushed in and connected to the actuating element 3 by inserting it into the guide slot 8.1 when the second gear part 8.2 is subsequently connected to the coupling shaft 6.

In order to enable a play-free transmission of the movement of the actuating element 3 to the coupling shaft 6, and thus also to the locking element 4, via the gear 8, the actuating element 3 is biased relative to the coupling shaft 6 by means of a spring 15. For this purpose, the spring 15 is arranged between the actuating element 3 and the coupling shaft 6. The spring 15 is designed as a compression spring, so that in the axial direction the actuating element 3 is biased relative to the coupling shaft 6 in such a way that the second gear part 8.2 is in engagement with the first gear part 8.1.

The actuating element 3 mounted with the coupling shaft 6 is now inserted into the sash housing 2. For this purpose, the actuating element 3 is oriented relative to the sash housing 2 in such a way that the securing contours 5.1, 5.2 are disengaged when the actuating element 3 is axially inserted into the sash housing 2, so that they can be pushed past each other. If the actuating element 3 is then rotated in the sash housing 2, the securing contours 5.1, 5.2 come into engagement and the actuating element 3 is axially secured relative to the sash housing 2. Due to the axial securing, the actuating element 3 remains in the sash housing 2 even before further assembly of the locking element 4, so that during assembly, the actuating element 3 together with the coupling shaft 6 does not necessarily have to be held in the sash housing 2 until the locking element 4 is installed. This results in a significantly simplified assembly of the quarter turn 1.

To mount the sash on the door, the sash housing 2 is inserted through an opening in the door 100 and through the nut 19 on it attached via the external thread 12 of the sash housing 2. Finally, the locking element 4 is positively connected to the coupling shaft 6 by inserting the locking element 4 onto the coupling shaft 6 and secured via the screw 20. The sash 1 is then completely mounted on the door 100.

The exact functionality of the sash lock 1 will now be discussed in more detail based on the unlocking process. During the locking process, the individual steps take place in reverse order.

The representations in the Figs. 2a, 2b and 2c show the sash 1 in different positions in the front view.

The Fig. 2a shows a first position of the sash lock 1. In this first position, the door 100 is locked and tensioned. The actuating element 3 is accordingly in the starting position. In the following, this first position of the sash lock 1 is referred to as the “locked position” in connection with the following figures.

The Fig. 2b shows a second position of the sash lock 1. In this position, the actuating element 3 was actuated in the first angular range α, so that the locking element 4 was moved translationally, i.e. telescoped. The first angular range α of the actuating element 3 corresponds to 90° in the exemplary embodiment, although different sizes of the first angular range α are also possible here. The actuating element 3 was thus rotatably actuated by 90° starting from the locked position. In this second position of the sash lock 1, the door 100 is still gripped behind by the locking element 4, but is no longer tensioned. The second position of the sash lock 1 is referred to below as the “telescopic position”.

The Fig. 2c shows a third position of the sash lock 1, in which the actuating element 3 was actuated by a further 90° in the second angular range β, so that the locking element 4 was pivoted by 90° accordingly. In the case of the sash 1, the rotational movement of the actuation area 3 in the second angular range β is transmitted one-to-one by the gear 8 into the rotational movement of the locking element 4. Consequently, the pivoting angle of the locking element 4 in this exemplary embodiment of the sash lock 1 corresponds exactly to the second angular range β of the actuating element 3. In the third position of the sash lock 1, the door 100 is unlocked and can be opened accordingly. This position is hereinafter referred to as the “open position”.

Based on 3a, 3b and 3c as well as the 4a, 4b and 4c The functions of the transmission 8 and the securing means 5 will now be discussed.

The Fig. 3a and 4a show the quarter turn 1 in the locked position, correspondingly along the cutting line AA or CC. In this state, the locking element 4 is pulled maximally towards the actuating element 3 by the gear 8 via the coupling shaft 6, so that the distance A between the actuating element 3 and the locking element 4 is minimal.

In the locked position, the stop lug 10 abuts the stop 11 of the sash housing 2, cf. Fig. 3a . Furthermore, the guide pin 7.1 engages with the pin groove 7.2 and is accordingly guided by it.

The securing means 5 secures the actuating element 3 axially in the locked position by the securing contours 5.1, 5.2 engaging with one another. The securing contour 5.1 of the actuating element 3 engages behind here, in the manner of a non-locking bayonet lock, the securing contour 5.2 of the sash housing 2, so that the fastening means 3 is secured relative to the sash housing 2 in the axial direction and is accordingly immovable.

Now starting from the locked position according to Fig. 3a , 4a When the actuating element 3 is rotationally actuated in the first angular range α, i.e. rotary actuated, the locking element 4 moves translationally along the axis of the sash 1. Here, the distance A between the actuating element 3 and the locking element 4 is increased, cf. Fig. 3b , 4b .

The transmission of the rotational movement of the actuating element 3 into the translational movement of the locking element 4 is made possible by the gear 8 in interaction with the pin guide 7. When the actuating element 3 is actuated, the first gear part 8.1 is also rotated. The second gear part 8.2 guided in this first gear part 8.1 is correspondingly taken along and guided along the guide slot. Due to the positive connection, the guided movement of the second gear part 8.2 is transmitted accordingly to the coupling shaft 6 and to the locking element 4 coupled to the coupling shaft 6. In order to convert the rotational movement of the guide slot, i.e. the first gear part 8.1, into the translational movement of the driver, i.e. the second In order to achieve the transmission part 8.2, the driver must be prevented from “rotating” in the first angular range α by the pin guide 7.

For this reason, the guide pin 7.1 is guided in the first angular range α in the pin groove 7.2, cf. 4a and 4b . The pin groove 7.2 arranged in the sash housing 2 is designed in such a way that the guide pin 7.1 is guided axially, so that the coupling shaft 6 together with the locking element 4 is moved in a corresponding translation. As soon as the quarter turn 1 is in the telescoped position according to Fig. 3b and 4b is located, the translational movement of the locking element 4 is completed and the guide pin 7.1 is no longer in engagement with the pin groove 7.2, cf. Fig. 4b .

The distance A increases during the translational movement of the locking element 4. Since the actuating element 3 is only rotatably mounted in the sash housing 2, the actuating element 3 must be prevented from moving in the axial direction during the translational movement of the locking element 4. In order to prevent the actuating element 3, together with the locking element 4 coupled thereto, from being displaceable back and forth in the first angular range α, the securing means 5 secures the actuating element 3 axially relative to the sash housing 2. The securing takes place through the engagement of the securing contour 5.1 of the actuating element 3 with the securing contour 5.2 of the sash housing 2, cf. Fig. 4b .

If the actuating element 3 is further rotatably actuated starting from the telescoped position in the second angular range β, the locking element 4 is pivoted, cf. Fig. 3c . In the exemplary embodiment, the pivoting angle of the locking element 4 corresponds to 90° and is therefore the same size as the second angular range β of the actuating element, see also Fig. 2c . During the rotational movement of the locking element 4, the distance A between the actuating element 3 and the locking element 4 remains unchanged.

In the second angular range β, the actuating element 3 is axially unlocked via the securing means 5, so that the securing contours 5.1, 5.2 are disengaged. However, the actuating element 3 is still immovable in the axial direction relative to the sash housing 2 during actuation in the second angular range β, since the guide pin 7.1 Sash housing 2 engages behind due to the pivoting, cf. Fig. 3b to 3c and 4b to 4c. The axial unlocking of the actuating element 3 relative to the sash housing 2 enables in particular the simplified assembly of the sash 1, as shown below 5a, 5b and 6a, 6b is explained.

The 5a and 5b show the actuating element 3 and the securing contour 5.1 arranged on the end face 18 in detailed views.

The securing contour 5.1 is designed on the end face 18 of the actuating element 3 as an integral part of it. Due to the arrangement of the front locking contour 5.1, it can be brought into or out of engagement with the corresponding locking contour 5.2 in the assembled state of the sash 1 in a structurally simple manner by rotating the actuating element 3 in the sash housing 2.

The securing contour 5.1 has two mounting openings 5.3 lying opposite one another in the circumferential direction for mounting the actuating element 3. The mounting openings 5.3 each extend over an angle of approximately 90°, so that the securing contour 5.1 is divided into four sections of approximately the same size. It would also be possible here for the mounting openings 5.3 to have an angle that deviates from 90°.

The 6a and 6b show the sash housing 3 in a top view and in a sectional view along the section line DD.

The securing contour 5.2 is arranged circumferentially on the inner lateral surface 16 of the sash housing 2. Just like the securing contour 5.1 of the actuating element 3, the securing contour 5.2 also has two opposite recesses 5.4. The recesses 5.4 extend However, over a further angle of approximately 135°, although different angles are also possible here.

The design of the securing contours 5.1 and 5.2 is such that the actuating element 3 is inserted into the sash housing 2 and by subsequently turning the securing contours 5.1, 5.2 are brought into engagement in a simple manner in order to axially secure the actuating element 3 in the sash housing 2.

By the actuating element 3 being axially secured relative to the sash housing 2 in the first angular range α via the securing means 5 and axially unlocked in the second angular range β via the securing means 5, a simply constructed and easy-to-assemble sash 1 can be realized by the securing means 5. Since the actuating element 3 is arranged axially immovably on the sash housing 2, the sash 1 is particularly suitable for applications in the hygiene sector.

Reference symbol:

1

sash

2

sash housing

3

Actuator

4

Locking element

5

security means

5.1

Backup contour

5.2

Backup contour

5.3

Assembly opening

5.4

Assembly opening

6

Coupling shaft

7

trunnion guide

7.1

Guide pin

7.2

tenon groove

8th

transmission

8.1

Gear part

8.2

Gear part

9

Pre-friction tongue

10

stop nose

11

attack

12

External thread

13

sealant

14

Investment area

15

Feather

16

inner lateral surface

17

security means

18

front side

19

Mother

20

screw

100

door

α

first angle range

β

second angle range

A

Distance

Claims (16)

1. Sash fastener for locking a door (100), comprising a sash fastener housing (2), an actuating element (3) rotatably mounted on the sash fastener housing (2), and a locking element (4) which is coupled to the actuating element (3) and which is movable in translation in a first angular range (α) of the actuating element (3) and in rotation in a second angular range (β) of the actuating element (3),
   characterized in
   that the actuating element (3) is axially secured relative to the sash fastener housing (2) in the first angular range (α) via a securing means (5) and is axially unlocked in the second angular range (β) via the securing means (5).
2. Sash fastener according to claim 1, characterized in that the actuating element (3) is coupled to the locking element (4) via a coupling shaft (6).
3. Sash fastener according to claim 2, characterized in that the actuating element (3) is coupled to the coupling shaft (6) via a gear (8) for generating the translatory and rotatory movement of the locking element (4).
4. Sash fastener according to claim 3, characterized in that the gear (8) has a first gear part (8.1) on the actuating element side and a second gear part (8.2) on the coupling shaft side.
5. Sash fastener according to claim 4, characterized in that the first gear part (8.1) is designed as a guide slot and the second gear part (8.2) is designed as a driver which can be moved via the guide slot.
6. Sash fastener according to one of the claims 3 to 5, characterized in that the gear unit (8) is arranged completely inside the sash fastener housing (2).
7. Sash fastener according to one of claims 2 to 6, characterized in that the coupling shaft (6) is preloaded relative to the actuating element (3) by means of a spring (15), in particular a compression spring.
8. Sash fastener according to one of the preceding claims, characterized by a journal guide (7) for translational guidance of the locking element (4) in the first angular region (α) of the actuating element (3).
9. Sash fastener according to claim 8, characterized in that the journal guide (7) has a guide journal (7.1) oriented on the coupling shaft (6), transversely to the shaft axis thereof.
10. Sash fastener according to claim 9, characterized in that the guide pin (7.1) engages in a pin groove (7.2) of the sash fastener housing (2) in the first angular range (α).
11. Sash fastener according to one of the preceding claims, characterized in that the securing means (5) has at least two mutually corresponding securing contours (5.1, 5.2).
12. Sash fastener according to claim 11, characterized in that one securing contour (5.1) is arranged on the actuating element (3) and one securing contour (5.2) is arranged on the sash fastener housing (2).
13. Sash fastener according to one of the claims 11 or 12, characterized in that the securing contours (5.1, 5.2) are arranged relative to one another in such a way that the securing contours (5.1, 5.2) are in engagement with one another in the first angular range (α) of the actuating element (3) and are out of engagement in the second angular range (β) of the actuating element (3).
14. Sash fastener according to one of the claims 11 to 13, characterized in that the securing contours (5.1, 5.2) each have at least one mounting opening (5.3, 5.4) in the circumferential direction for mounting the actuating element (3) in the axial direction on the sash fastener housing (2).
15. Sash fastener according to one of the claims 11 to 14, characterized in that a securing contour (5.1) is arranged on an end face (18) of the actuating element (3) facing the locking element (4) and/or a securing contour (5.2) is arranged on an inner lateral surface (16) of the sash fastener housing (2).
16. Sash fastener according to claim 15, characterized in that the securing contour (5.2) is designed as a groove arranged on the inner lateral surface (16) and extending over part of the circumference of the inner lateral surface (16), and in that the securing contour (5.1) is designed as a securing element engaging in the groove, in particular as a securing hook.

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