Portable hoop lock

Abstract

A portable hoop lock includes a lock body, a lock hoop, and an electromechanical locking mechanism configured to selectively lock the lock hoop. An energy source of the locking mechanism is arranged in a housing having a replacement opening through which the energy source can be introduced and removed. The hoop lock includes a cover that can be plugged onto the housing to close the replacement opening, where the housing or the cover has at least one elastically deformable sealing portion that forms a circumferentially raised portion at a side wall of the cover or the housing, and the sealing portion can be compressed between the cover and the housing and / or elastically deformed by plugging of the cover.

Description

Technical Field

[0001] The present application relates to a portable clamp lock and, in particular, to a padlock for securing a switch or a stopper of an industrial system, which can be used, for example, as a so-called lockout padlock. The clamp lock comprises a lock body and a lock clamp, which can be selectively introduced into the lock body or at least partially separated from the lock body. The lock body comprises an electromechanical locking mechanism, which is configured to selectively lock the lock clamp introduced into the lock body to prevent separation from the lock body, or to release the lock clamp for separation from the lock body. For this purpose, the electromechanical locking mechanism comprises an electric motor, at least one latch element that can be driven by the electric motor, and an energy source for supplying electrical energy to the electric motor, the energy source being in particular a battery. Background Art

[0002] A band lock may generally be used in a variety of applications for selectively blocking or releasing access to an object or room, and may, for example, have a rigid or flexible band that may be selectively locked to a lock body or released for detachment from the lock body. For example, a band lock may be used to lock a lock by guiding the lock band through an eyelet of a hasp of the lock, and then locking the lock band to the lock body, to ensure that an object stored in the lock is not accessed. The band lock may also be used, for example, to connect a frame portion of a two-wheeled vehicle to a fixed object, and thereby secure the two-wheeled vehicle to prevent unauthorized riding away.

[0003] However, a special field of application of the clamp lock configured as a padlock is in the field of occupational safety. A risk associated with the maintenance of industrial systems, such as production machines, is that the industrial system, which has been deactivated for maintenance work, is accidentally started again while the maintenance work is still continuing. This can pose a considerable danger to the maintenance personnel. Therefore, usually the maintenance personnel move the switch associated with the industrial system or, for example, the stopper of a fluid pipeline to the OFF position during the maintenance work and fix it in this position, i.e. the switch or the stopper is directly blocked or the access to the switch or the stopper is blocked. The switch is usually an energy supply switch, for example, a control device of the industrial system or an electrical main switch of the energy supply device (for example, a power switch box). Alternatively, the switch or the stopper can be, for example, a valve of a liquid pipeline or a gas pipeline.

[0004] In order to effectively prevent another person from accidentally activating the industrial system, each maintenance engineer hangs a padlock on the switch or the stopper before starting his work and locks the padlock. In particular, such a padlock can have a rigid clamp or a flexible clamp and / or a substantially U-shaped clamp, which can be locked to the lock body of the padlock to lock the padlock. The switch (e.g., an electrical switch) or the stopper (e.g., a stopper of a fluid pipeline) is thereby fixed in the OFF position and cannot be accidentally moved back to the ON position by another person. When the maintenance engineer finishes his work, he unlocks the padlock again and releases it from the switch or the stopper. Each service engineer is usually assigned his own individual padlock (or a plurality of his own individual padlocks).

[0005] This process is also called lockout. Therefore, the padlock used is called lockout lock. Document US 5,449,867 shows such fixation of an electric rocker switch by means of a padlock. Document US 3,171,908 shows that the position of a rotary switch is fixed by means of a padlock.

[0006] Therefore, multiple maintenance engineers can block and release the switch or stopper independently of each other again, and multiple receivers (e.g., holes) can be arranged at the switch or stopper for hanging in multiple lockout locks. For example, this can be learned from document US 6,388,213. If only a single receiver is provided for the lockout lock, a fixed claw can be used, which is suspended in the corresponding hole of the switch or the relevant stopper, and the fixed claw in turn has a plurality of hanging holes for the corresponding padlock. Only when the last padlock has been removed from the fixed claw can the fixed claw be removed, so that the switch or stopper can be brought to the ON position again. Such fixed claws for electrical switch boxes are known, for example, from documents US 6,396,008, US 5,365,757 and US 3,667,259.

[0007] For example, such a lockout padlock can be configured as an electronic hoop lock with an electromechanical locking mechanism in order to enable easy operation when opening the padlock after maintenance. For this purpose, the padlock can be opened, for example, after the service has taken place, by sending an opening code from a smartphone, so that an authorized service engineer only needs to carry with him the smartphone, which is often carried anyway, instead of a separate mechanical key for the padlock to be able to open the padlock. This option for controlling the lock is particularly advantageous for lockout padlocks, because maintenance engineers sometimes have to lock a plurality of switches or stoppers with corresponding lockout padlocks, and open all lockout padlocks again after maintenance has been carried out, so that if the padlock is designed purely mechanically, each padlock may require a separate key. On the other hand, the electronic hoop lock can be controlled entirely by a suitable application (app), for example on a smartphone. This simple controllability is also desirable and / or advantageous for hoop locks for other applications.

[0008] Although such electronic clamp locks are thus particularly capable of simplifying the unlocking of the clamp lock, for example in order to release a switch or a stopper after service of the industrial system has been carried out, when using electronic clamp locks there is generally the problem that actuation can only be carried out with a sufficiently charged energy source. It is therefore necessary to be able to replace the energy source if necessary, in order to be able to replace a depleted energy source and continue to use the clamp lock.

[0009] In this regard, the energy source of the electronic clamp must be accessible from the outside, so that an opening is required in the housing of the clamp through which the exhausted energy source can be removed so that a new charged energy source can then be inserted into the housing. At the same time, however, the energy source must be protected from damage by incoming liquids, so that the required opening must be reliably sealed. Again, this is particularly important in the field of occupational safety, for example when the clamp is used to block a gas line, to prevent damage to the energy source or the escape of battery acid.

[0010] In order to seal the required opening, it is usually provided that the opening is closed by a screwed-on cover and that, for example, a sealing ring is clamped between the cover and the housing, so that as a result, in particular a liquid exchange between the interior of the housing and the external environment of the padlock is prevented. Although a good seal can usually be achieved in this way, changing the energy source is undesirably time-consuming, since a tool suitable for releasing the fastening device (such as a screwdriver) is always required to remove the cover, which can lead to undesirable delays if the clamp lock with an exhausted energy source is to be unlocked quickly, but the required tool must first be obtained. Summary of the invention

[0011] Therefore, one object of the present application is to provide a portable clamp lock, which includes an electromechanical locking mechanism and a housing that enables a reliable sealing of an energy source for accommodating the electromechanical locking mechanism, and at the same time enables a depleted energy source to be replaced with a new energy source, which replacement can be performed simply and quickly.

[0012] This object is achieved by a portable clamp lock having the features of claim 1 .

[0013] The energy source of the clamp lock is arranged in a housing having a replacement opening through which the energy source can be introduced into the housing and removed from the housing. The clamp lock also has a cover that can be plugged onto the housing in a plugging direction to close the replacement opening. The housing or cover also has at least one elastically deformable sealing portion that forms a raised portion at the side wall of the cover or housing, wherein the raised portion extends circumferentially around the side wall. The sealing portion can be compressed between the cover and the housing and / or can be elastically deformed in the plugging direction by plugging the cover onto the housing to seal the replacement opening.

[0014] Thus, the clamp lock has the necessary opening in the form of a housing opening to be able to replace a depleted energy source, in particular a depleted battery. However, a cover is also provided to close the housing opening, in particular during regular use of the clamp lock. Since the at least one sealing portion can be compressed between the cover and the housing and / or elastically deformed by plugging the cover, the sealing portion can close the gap between the housing and the cover in a sealed manner, thereby protecting the energy source arranged in the housing from the ingress of liquids and / or dust. In particular, since the compression and / or elastic deformation occurs by plugging the cover onto the housing, the desired seal can be achieved immediately after plugging onto the cover, so that any fastening means for establishing the seal can be omitted. Conversely, the cover can also be correspondingly removed directly from the housing to replace the used or depleted energy source without having to first obtain appropriate tools.

[0015] Since the sealing portion forms a raised portion extending circumferentially around the side wall of the cover or housing, the sealing portion can extend in a circumferential direction at or along the side wall of the cover or housing relative to the blocking direction. In other words, since the sealing portion forms a raised portion extending circumferentially around the side wall of the cover or housing, the deformable sealing portion can form a circumferential raised portion at the side wall of the housing of the cover. In addition, when the cover is blocked, the at least one sealing portion can be particularly arranged between the side wall of the cover and the side wall of the housing. Thus, the housing or cover can have at least one sealing portion, which is not axially arranged between the corresponding end faces of the cover and the housing or at the corresponding end faces relative to the blocking direction, but is arranged between the corresponding side walls of the housing and the cover. For example, the sealing portion arranged at the side wall of the housing can rise inwardly from the side wall to the internal space of the housing so as to be elastically deformed by introducing a part of the cover into the internal space, and, for example, displaced along the blocking direction and / or compressed transversely to the blocking direction. Thus, the sealing portion can apply a force directed opposite to the elastic deformation on the introduced part of the cover to seal the internal space of the housing.

[0016] Alternatively, for example, the sealing portion may be arranged to extend circumferentially around the outer wall of the portion of the cover, and the sealing portion may be introduced into the inner space of the housing, so that during the introduction of the outer wall of the cover into the inner space of the housing, the sealing portion is compressed or displaced relative to the blocking direction and thereby elastically deformed in the blocking direction. Thus, the sealing of the inner space of the housing may also be achieved directly.

[0017] In addition, for example, the sealing portion can be arranged circumferentially on the outside of the inner space of the housing facing away from the housing, in which the energy source is arranged, so as to cooperate with the inner side wall of the cover, which can be blocked to the outside of the housing and thus seal the inner space of the housing. It can also be provided that such a cover can be blocked to the outside of the housing, and the sealing portion is formed on the side wall or inner wall of the cover facing the housing, so as to achieve the desired seal.

[0018] In particular, it can generally be provided that the sealing portion is arranged such that the sealing portion contacts the side wall of the element (housing or cover) without the sealing portion during plugging of the cover onto the housing and is thereby compressed and / or elastically deformed to achieve a seal between the side wall with the sealing portion and the opposite side wall of the respective other element. Viewed from another aspect, the side wall of the element without the sealing portion can in particular extend into the movement path of the sealing portion, which movement path the sealing portion describes relative to the element without the sealing portion when the cover is plugged onto the housing.

[0019] In particular, the design of the housing or the cover with a circumferential sealing portion at the side wall thus enables sealing between the corresponding side walls of the housing and the cover, so that the sealing is achieved in particular by a force directed transversely to the blocking direction between the sealing portion and the side wall of the element without the sealing portion. Since the sealing is thus not achieved by a force acting in the blocking direction, it is not necessary, unlike conventional solutions, to generate a force in the blocking direction between the cover and the housing that is sufficient to deform the sealing element arranged in the blocking direction between the cover and the housing. Therefore, with the clamp lock disclosed herein, it is possible to particularly omit the fastening device, which in conventional solutions axially fixes the cover to the housing relative to the blocking direction and generates the axial force required to seal the housing. In this regard, the clamp lock disclosed herein enables a housing provided for an energy source or a replacement opening required for replacing the energy source to be reliably sealed, wherein, however, the cover only has to be blocked to the housing for this purpose and does not have to be fixed to the housing by a separate fastening device, for example by screwing to the housing.

[0020] Thus, in some embodiments, the cover can also be released from the housing in a simple manner and in particular without tools and / or can be removed directly from the housing without further disassembly steps for replacing the energy source. However, in addition to the sealing of the housing, the compression and / or elastic deformation of the sealing portion can axially fix the cover against unintentional release from the housing relative to the blocking direction, because the static friction to be overcome between the sealing portion and the side wall of the element without the sealing portion can prevent the cover from being unintentionally released from the housing.

[0021] Even if the energy source can thus be accessed directly and without tools, this does not lead to a safety disadvantage, in particular when the clamp lock is used as a lockout padlock, since the clamp lock or padlock used in this way does not serve as an anti-theft or disconnection protection in any case, but is merely intended to prevent unintentional actuation of switches and stoppers during maintenance procedures. However, for such applications, it is important to reliably seal the housing and, if necessary, to be able to quickly and easily replace the energy source, so that, for example, after maintenance is carried out, and if the energy source is exhausted, it is not necessary to first find or even always carry appropriate tools in order to be able to change the energy source and then open the clamp lock. Therefore, the clamp lock disclosed herein is particularly suitable as a lockout padlock and can therefore be configured in particular as a padlock and / or a lockout padlock. However, in some embodiments, and in particular for clamp locks provided for other applications, additional fastening means can also be used to fix the cover to the housing in order to make unauthorized access to the energy source more difficult.

[0022] Typically, a clamp lock can be configured, for example, as a padlock and can have a rigid, essentially U-shaped clamp. Such a U-clamp can have two arms that can be introduced into the lock body, wherein it can be provided that the relatively long arm always remains in the lock body and, for example, only the relatively small arm of the U-clamp can be detached from the lock body in order to be able to pivot about the relatively long arm in the detached state. However, it can also be provided that the two (equally long or different long) arms of the padlock can be detached from its lock body. Alternatively, however, the clamp lock can also have, for example, a flexible clamp and be designed as a cable lock, chain lock or engaging rod lock (also called folding lock). For example, a lockout padlock can also have a wire rope clamp.

[0023] Further embodiments can be seen from the dependent claims, the description and the drawings.

[0024] In some embodiments, the replacement opening may be arranged on a lower side of the lock body opposite to the lock hoop.

[0025] In some embodiments, the cover may have a closing plate oriented perpendicular to the blocking direction and extending along the extension plane of the replacement opening when the cover is blocked onto the housing. In addition, the cover may have a blocking sleeve abutting the closing plate and extending circumferentially around the closing plate in the blocking direction. In some embodiments, the blocking sleeve may be configured to cooperate with at least one sealing portion of the housing, while in other embodiments, the blocking sleeve may have at least one sealing portion.

[0026] Thus, it can be provided that the cover has a closing plate which covers and thus closes the replacement opening when the cover is blocked. In particular, the closing plate can be oriented perpendicular to the blocking direction. In addition, the cover can have a blocking sleeve adjoining the closing plate and which can be introduced, for example, into the interior space of the housing in order to block the cover onto the housing as a result. Alternatively, however, the blocking sleeve can also be pushed, for example, onto the outside of the housing.

[0027] Since the circumferential blocking sleeve can be arranged opposite to the side wall of the shell when the cover is blocked onto the shell, the sealing portion can be particularly arranged at the blocking sleeve to be compressed and / or elastically deformed by the side wall of the shell, or the blocking sleeve can cooperate with the sealing portion formed at the side wall of the shell to compress and / or elastically deform the sealing portion.

[0028] In some embodiments, the housing may have at least one sealing portion, and the plugging sleeve may be configured to cooperate with the at least one sealing portion to seal the replacement opening.

[0029] In such an embodiment, the sealing portion can in particular extend from the side wall of the housing up to and into the movement path described by the blocking sleeve, and when the sealing portion is blocked onto the sleeve, it can come into contact with the blocking sleeve during blocking of the cover, as a result of which it can be elastically deformed and / or compressed.

[0030] In some embodiments, at least one sealing portion may extend from a side wall of the housing into the interior space of the housing.

[0031] In such an embodiment, it can also be provided that the blocking sleeve of the cover can be introduced into the internal space of the shell so as to be able to cooperate with a sealing portion arranged at the shell, and to be able to seal the internal space of the shell by compressing and / or elastically deforming at least one sealing portion.

[0032] In some embodiments, the entire housing may be elastically deformable. To this end, in some embodiments, the housing may be made in particular of silicone.

[0033] In such an embodiment, the housing may therefore in particular not be a rigid housing and / or a housing that significantly secures the lock body against disconnection attempts, but may also form a flexible sleeve around the energy source and / or a flexible battery chamber, so to speak, for sealingly storing the energy source and / or the battery in the hoop lock. As explained in more detail below, the housing may therefore in particular form an inner sleeve of the lock body and be surrounded by a rigid outer housing in order to achieve sufficient stability of the hoop lock or the lock body.

[0034] However, such an elastically deformable design of the housing as a whole makes it possible to configure the sealing part directly as a housing part, for example, instead of fastening it to the housing as a separate component, for example. Instead, the elastically deformable housing that can surround the energy source in a sealed manner can clearly be used to directly form the sealing part, which is used to seal the housing opening that needs to be able to replace the energy source.

[0035] In some embodiments, at least one sealing portion may be integrally formed with the housing.

[0036] A completely one-piece component (here: housing with sealing part) is to be understood as a component which is originally formed as a single joint component and which can be manufactured, for example, by casting or injection molding. Thus, a housing in which the sealing part according to such an embodiment is completely formed in one part is particularly distinguished from a housing with a sealing part which is originally assembled from two or more parts (e.g. a housing part and an attached sealing part part) and whose individual elements are connected to form a releasable or permanent joint connection, such as by welding, screwing or adhesive bonding.

[0037] Since in some embodiments the sealing part can be integrally formed with the housing, the sealing part and the housing can form such an integral one-piece component that in these embodiments the sealing part is, for example, not only connected to the housing after the formation of the housing, but is, for example, bonded to the housing. Thus, in such embodiments, in particular, the entire housing can be elastically deformable and / or can be made of the same material as the sealing part.

[0038] Typically, in some embodiments, the sealing portion may also be made of silicone.

[0039] In some embodiments, the housing may surround the electric motor in a sealed manner.

[0040] In particular, in some embodiments, the housing can thus form a sleeve for sealing the electronic components of the electromechanical locking mechanism, so as to be able to seal the energy source, the motor and the electrical lines leading from the energy source to the motor against external influences. The housing can furthermore, in particular on the side facing away from the replacement opening, have a drive transmission opening, at which the drive transmission elements of the electromechanical locking mechanism and / or the latching element can protrude from the housing in a sealed manner, so as to be able to selectively lock the locking collar.

[0041] In some embodiments, the band lock may include a radio receiver for receiving an unlock command and / or a lock command via a radio connection and a control device, the control device being configured to control the electromechanical locking mechanism to release the introduced lock band for separation from the lock body in response to the received unlock command, and / or to control the electromechanical locking mechanism to lock the introduced lock band in response to the received lock command. For example, such a radio receiver may enable communication with a smartphone via a radio connection such as a mobile radio connection, a WLAN / WiFi connection and / or a Bluetooth connection. Alternatively or additionally, in some embodiments, the band lock may have a sensor for detecting a band introduced into the lock body, and the control device of the band lock may be configured to control the electromechanical locking mechanism to lock the lock band in response to a signal from the sensor.

[0042] In some embodiments, the housing may have a circumferential latching flange, and in such embodiments, a circumferential latching groove may be formed at the cover, wherein the latching flange may engage into the latching groove when the cover is blocked.

[0043] In particular, a circumferential latching bead can be formed at the side wall of the housing, and a latching groove can be formed on the side wall of the cover facing the latching bead, in particular on the above-mentioned plugging sleeve. In addition, the latching bead can be configured to extend from the side wall of the housing, in particular into the interior space of the housing, so as to be able to engage in the latching groove. In particular, such a latching bead can be provided in embodiments in which at least one sealing portion is also formed on the housing. In embodiments in which the housing has at least one sealing portion, the latching bead can also be arranged in particular on the same side wall as the at least one sealing portion.

[0044] Due to the engagement of such a latching flange into a latching groove, the cover can be particularly secured against release from the housing in the opposite direction of the blocking, for which purpose the latching groove can, for example, have an undercut with which the latching groove engages behind the latching flange. In addition, the latching flange can be particularly elastically deformable so as to be elastically deformed during the blocking of the cover onto the housing, but to be able to expand against the elastic deformation and to engage into the latching flange after the cover is completely blocked. In addition, in some embodiments, the latching flange can be integrally formed with the housing.

[0045] However, it is also generally possible that the latching projection is formed at the cover, in particular at the aforementioned blocking sleeve, and that the housing has a latching groove, into which the latching projection formed at the cover engages when the cover is blocked. This can be provided in particular in an embodiment in which at least one sealing portion is formed at a side wall of the cover, in particular at the blocking sleeve.

[0046] In some embodiments, the latching flange can be arranged at the end of the housing facing the replacement opening. In such an embodiment, the latching groove can also be formed on the portion of the blocking sleeve of the cover surrounding the closing plate, which portion abuts the closing plate of the cover. Thus, in such an embodiment, the cover can be fixed directly in the area of ​​the replacement opening to prevent release from the housing opposite to the blocking direction by engaging the latching flange into the latching groove.

[0047] In some embodiments, the housing may form a flexible inner sleeve of the padlock, and the padlock may have a rigid outer housing surrounding the housing and supporting the housing thereat.

[0048] The housing configured as a flexible inner sleeve can be particularly elastically deformable so that the housing can be used to seal the energy source, but does not give the padlock the required stability or represent disconnection protection. In particular, such a housing can therefore be used to seal the energy source to prevent liquids from entering the outer housing.

[0049] Since the housing can be supported on a rigid outer housing, outward forces transmitted from the cover to the housing via the sealing portion can be absorbed by the rigid outer housing to thereby prevent the housing from being displaced outwards and achieve the desired seal. Since in such an embodiment the housing is flexible and / or elastically deformable, in an embodiment in which the housing forms a flexible inner sleeve, the housing can in particular have at least one sealing portion and / or be integrally formed with the sealing portion.

[0050] The outer housing may also have a housing opening around the replacement opening. In this regard, the outer housing may also have an opening to allow removal and / or insertion of an energy source form and / or entry into the housing.

[0051] In addition, in some embodiments, the end of the housing can be arranged to be clamped between the blocking sleeve of the cover and the outer housing. In particular, when the cover is blocked, the end can therefore be pushed outwards against the outer housing, and therefore can be stably supported on the outer housing in the assembled state of the padlock.

[0052] In some embodiments, the outer housing may have a housing opening which surrounds the replacement opening and is bounded by a circumferential edge portion, wherein the housing may extend beyond the outer housing relative to the blocking direction and may engage on the edge portion, in particular radially outwardly.

[0053] In particular, by such an engagement on the edge portion, the housing can be fixed relative to the outer housing with respect to a movement in the blocking direction. In addition, the engagement on the edge portion can make it possible to fix the portion of the housing protruding towards the replacement opening against a movement transverse to the blocking direction and to keep the housing, which is in particular flexible and / or elastically deformable, in the desired form.

[0054] Furthermore, in such an embodiment, the cover can in particular rest on a portion of the housing that engages on an edge portion of the outer housing. In particular, in embodiments in which the entire housing is elastically deformable, further sealing of the interior space of the housing can thus also be achieved by such a resting of the cover at the housing (the cover thus at least not completely rests at the rigid outer housing).

[0055] In some embodiments, the housing can have a raised bearing portion on the outside, which engages in a bearing recess of the outer housing. In particular, during the assembly of the clamp lock, the housing can be introduced into the inner space of the outer housing, wherein the engagement of the raised bearing portion into the bearing recess can indicate the correct positioning of the housing in the outer housing and can stabilize the housing in the outer housing. Thereby, in particular, the assembly of the clamp lock can be facilitated, wherein such a configuration of the outer housing with a bearing recess is possible, through which the housing can be accessed, which configuration is in particular no problem in lockout applications, since a clamp lock or padlock used in this way does not have to provide disconnection protection against theft attempts or insertion attempts.

[0056] In some embodiments, the outer housing and / or the locking collar may be made of a non-conductive material, and in particular of plastic.

[0057] In particular, if the padlock is used as a lockout padlock, a non-conductive design of the components of the band lock that are in mechanical contact with the switch or the stopper can be provided in order to prevent any current from flowing through the band lock. In addition, when used as a lockout padlock, the design of the outer housing and / or the lock band, for example, of plastic is not problematic, since the padlock does not have to withstand any attempts to disconnect. The configuration of the band lock with an outer housing and / or a lock band made of plastic also enables a lighter design of the band lock compared to the use of metal components, so that multiple band locks can also be conveniently carried, which is also particularly necessary in lockout padlocks. In addition, the plastic outer housing and / or the plastic lock band can easily be manufactured in different colors, for example, so that different types of lockout padlocks provided for different system components can be easily identified.

[0058] In some embodiments, a rigid holder for holding the energy source can be arranged in the housing, wherein, in particular, a spring for tensioning the energy source in the holder can be arranged at the holder. In addition, in some embodiments, the electric motor can also be held at the holder.

[0059] In particular, in embodiments in which the entire housing is elastically deformable, such a holder can be provided to achieve a precise and stable support of the energy source and / or the electric motor. The housing can in particular be arranged around the holder so that the interior space of the holder can also be reliably sealed by plugging the cover onto the housing. For example, the holder can be made of metal or plastic.

[0060] In addition, in some embodiments, the housing may have a housing support edge extending in the interior space of the housing, and the retainer may have a retainer support edge extending outward. In such an embodiment, the retainer may be supported at the housing support edge with the retainer support edge in the blocking direction. In addition, in such an embodiment, the housing viewed in reverse may be supported at the retainer support edge with the housing support edge opposite to the blocking direction.

[0061] In such an embodiment, it can be provided, for example, that the retainer is fixed relative to the outer housing with respect to a movement opposite to the blocking direction, so that by supporting the housing at the retainer support edge, the housing can also be fixed against a movement opposite to the blocking direction. In addition, the retainer, in particular the element held thereat, can be inserted into the housing, for example during assembly of the clamp lock, wherein the housing support edge can form an abutment for the retainer or the retainer support edge in order to indicate the correct positioning of the retainer and therefore in particular also the correct positioning of the element held thereat. The housing can then, for example, be inserted into the outer housing of the clamp lock, so that all components can be correctly positioned within the outer housing in a single assembly step.

[0062] In some embodiments, the cover may have at least one support portion that extends into the housing when the cover is blocked, and the support portion is configured to secure the energy source to prevent movement opposite to the blocking direction.

[0063] For example, two bearing portions may be provided which extend from the closing plate of the cover towards the energy source and which the energy source may contact when the cover is blocked, so that the energy source may be fixed by the cover against movement opposite to the blocking direction. Such bearing portions may be designed as flat bearing surfaces, for example, wherein the bearing portions may alternatively or additionally have a shape adapted to the shape of the energy source and / or may be, for example, curved at the contact portion facing the energy source.

[0064] In some embodiments, the sealing portion can be configured as a circumferential sealing lip. In particular, in some embodiments, it can therefore be provided that the housing has at least one circumferential sealing lip at the side wall.

[0065] In some embodiments, two circumferential sealing portions arranged offset from each other in the blocking direction can be provided at the housing or the cover. In particular, the sealing portions can be formed in the same way, so that two sealing lips arranged offset from each other in the blocking direction can be formed, for example, at the housing or the cover. Here, the sealing portion facing the replacement opening can serve, for example, as dust protection and first liquid protection, while the sealing portion facing away from the replacement opening can be provided primarily as further liquid protection.

[0066] In some embodiments, the sealing portion, housing, and / or cover may be made of an acid-resistant material.

[0067] In particular, the sealing part, the housing and / or the cover may be configured to be battery acid resistant in order to prevent battery acid that may be released by the energy source from escaping from the housing. This is also particularly important for applications in the field of occupational safety.

[0068] In some embodiments, the cover can be released from the housing without tools, in the fully assembled state of the clamp lock. Thus, in such an embodiment, starting from a fully assembled clamp lock, it is possible to release the cover from the housing and replace the energy source without having to use a tool such as a screwdriver. Thus, in such an embodiment, the cover can in particular be removed directly from the housing. However, an unintentional release of the cover from the housing can be prevented by static friction acting between the sealing portion and the side wall of this element of the housing and the cover without the sealing portion, and / or the cooperation of the above-mentioned latching flange with the likewise mentioned latching groove can be prevented.

[0069] In some embodiments, no separate fastening means, in particular no screws, may be provided for fastening the cover to the housing.Alternatively or additionally, in some embodiments, no additional sealing means, in particular no sealing ring, may be arranged axially between the housing and the cover relative to the blocking direction.

[0070] Thus, in some embodiments, it can be provided that the cover directly contacts the housing axially. As already explained, this omission of additional sealing means is also possible, since the sealing does not take place axially with respect to the blocking direction, but transversely to the blocking direction by means of the sealing portion extending from the side wall, so that in particular it is not necessary to generate forces acting in the blocking direction to deform the sealing element in order to seal the housing. However, in particular with an elastically deformable design of the housing, a certain sealing in the axial direction can be achieved even with such direct contact of the cover with the housing.

[0071] In some embodiments, a corresponding handle recess can be formed on the lock body, laterally adjacent to the replacement opening at the mutually oppositely arranged sides, to remove the blocking cover from the housing. In particular, the housing and / or the outer housing of the clamp lock can have a corresponding lateral handle recess, and the cover, in particular the closing plate of the cover, can have a handle extending laterally above the handle recess, thereby forming the handle recess. This makes it possible to grasp the handle of the cover underside and to form a pressure on the closing plate in the opposite direction of the blocking, so that the cover can be easily released from the housing and access to the energy source can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The present application will be explained below by way of example with reference to the embodiments and the accompanying drawings. In the accompanying drawings:

[0073] Figure 1 A perspective view of a portable clamp lock configured as a padlock, and in particular configured as a lockout padlock, is shown;

[0074] Figure 2 A perspective view of the underside of the padlock is shown with a cover removed that is used to close a replacement opening of the housing of the clamp lock and a housing opening of the outer housing of the clamp lock;

[0075] Figure 3A and Figure 3B A corresponding perspective view of the cover is shown;

[0076] Figure 4 A cross-sectional view of a clamp lock is shown;

[0077] Figure 5 A perspective view of an electromechanical locking mechanism of a clamp lock having an energy source configured as a battery and held at a retainer is shown; and

[0078] Figure 6 A bottom perspective view of the housing of the clamp lock, configured as a flexible inner sleeve, is shown with the cover removed. DETAILED DESCRIPTION

[0079] Figure 1 A hoop lock 11 is shown with a lock body 13 and a lock hoop 15, which can be locked to the lock body 13 and can be at least partially detached from the lock body 13. As an example, the hoop lock 11 is shown as a padlock, whose lock hoop 15 is configured as a rigid and approximately U-shaped U-shaped hoop with two arms 16, which can be introduced into the outer housing 55 of the hoop lock 11 for locking and can be locked by an electromechanical locking mechanism 17 (see also Figure 4 and Figure 5 , relative to the locking mechanism 17) is locked at the outer housing.

[0080] In particular, from Figure 4 and Figure 5 As can be seen in the figure, the lock hoop 15 has a long arm 16 and a short arm 16, wherein, for example, the short arm 16 can be selectively removed (or split) from the lock body 13 for opening the hoop lock 11, while the long arm 16 can be retained in the lock body 13 even when the hoop lock 11 is opened. Alternatively, it can also be arranged that the released lock hoop 15 can be completely removed (or split) from the lock body 13.

[0081] In particular, the electromechanical locking mechanism 17 is designed in Figure 5. Thus, the electromechanical locking mechanism 17 has an electric motor 19, which is connected to an energy source 25 configured as a battery 67 and is connected to a rotatable latching element 21 via a gear 87 and a drive transmission element 23. In the locked position of the lock band 15 shown in the figure, the latching element 21 engages in a corresponding recess 18 of the arm 16 and thereby secures the arm 16 against release from the lock body 13, wherein, however, the latching element 21 can be rotated by appropriate control of the electric motor 19 into an unlocked position, not shown in the figure, in which at least the short arm 16 can be released from the lock body 13. For example, the band lock 11 can have a radio receiver, also not shown in the figure, for receiving an unlocking command, which can be sent to the radio receiver, for example, by a smartphone via a radio connection (e.g. a mobile radio connection, a WLAN / WiFi connection and / or a Bluetooth connection), and the band lock 15 can have a control device, which is configured to drive the electric motor 19 to drive the latching element 21 and release the lock band 15 in response to the unlocking command. In addition, the control device can also be configured, for example, to control the motor 19 to drive the latch element 21 into the locking position and lock the introduced locking band 15 in response to a locking command received at the radio receiver.

[0082] In general, such an electromechanical locking mechanism 17 thus allows for simple operation of the clamp lock 11, since it is not necessary to carry a mechanical key with you in order to be able to open and / or lock the clamp lock 11. However, in order to actuate the electromechanical locking mechanism 17, it is necessary for the energy source 25 to provide electrical energy to the electric motor 19, so that, for example, a depleted energy source 25 must be replaced by a new and charged energy source 25 or a new battery 67.

[0083] In order to be able to replace the exhausted energy source 25 in this way, the outer housing 55 is open on the underside of the clamp lock 11 opposite the locking clamp 15 and has a housing opening 57 which is bounded by an edge section 59 (see Figure 2 and Figure 4 ). In addition, the housing 27 configured as a flexible and elastically deformable inner sleeve 53 is arranged inside the outer housing 55 and has a replacement opening 29, through which the energy source 25 or the battery 67 can be selectively introduced into the inner space 41 of the housing 27 or removed from the housing 27. Therefore, it can be said that the housing 27 forms a battery chamber, into which the energy source 25 is inserted.

[0084] Although the replacement opening 29 thus enables access to the energy source 25 and replacement of the energy source 25, for example Figure 1 As shown, the clamp lock 11 has a cover 31 which is configured to selectively close the replacement opening 29 and achieve a sealing of the inner space 41 of the housing 27 to prevent liquids and / or dirt.

[0085] In particular, the cover 31 is provided by Figure 3A and Figure 3B , and is configured to be blocked onto the housing 27 along the blocking direction A so as to close and seal the replacement opening 29. The cover 31 has a closing plate 45 extending perpendicularly to the blocking direction A, and in the blocked state of the cover 31, the closing plate 45 extends in the extension plane of the replacement opening 29 and closes the replacement opening 29. In addition, the cover 31 has a blocking sleeve 47, which adjoins the closing plate 45 and extends circumferentially around the closing plate 45 in the blocking direction A. The blocking sleeve 47 is configured to be introduced into the inner space 41 of the housing 27 in the blocking direction A, and therefore, so to speak, is blocked into the housing 55 and the housing 27 of the clamp lock 11, so as to block the cover 31 onto the housing 27 as a result.

[0086] In addition, two support portions 73 are formed at the cover 31, the two support portions 73 extending along the blocking direction A and extending toward the energy source 25 in the blocked state of the cover 31, the support portions 73 having a contact portion 75 adapted to the shape of the energy source 25 and fixing the energy source 25 in the blocked state of the cover 31 to prevent movement opposite to the blocking direction A (see in particular Figure 3B and Figure 4 ). In addition, the cover 31 has two handles 85, which extend at the closing plate 45 and are arranged to selectively release the blocked cover 31 from the housing 27. In addition, a circumferential latching groove 51 is formed at the blocking sleeve 47, so that the cover 31 can be axially fixed at the housing 27 relative to the blocking direction A, which will be explained in more detail below.

[0087] The following will specifically combine Figure 4 The cooperation between the cover 31 for sealing the housing 27 and the housing 27 is explained.

[0088] For example, from Figure 4 As can be seen in FIG. 1 , two circumferential sealing portions 33 and 35 are formed at the side wall 39 of the housing 27, and corresponding raised portions 43 (see FIG. 1 ) are formed at the side wall 39 protruding into the interior space 41 of the housing 27. Figure 2 and Figure 6 In particular, the sealing portions 33 and 35 are also arranged offset from one another in the blocking direction A and form respective sealing lips 37 extending into the interior space 41 of the housing 27 .

[0089] The sealing portions 33 and 35 are also arranged such that the sealing portions 33 and 35 protrude into the movement path of the blocking sleeve 47, which the blocking sleeve 47 describes during the blocking of the cover 31 onto the housing 27. Therefore, the sealing portions 33 and 35 are in contact with the blocking sleeve 47 during the blocking of the cover 31. The sealing portions 33 and 35 can also be elastically deformed, such that the sealing portions 33 and 35 are compressed by the blocking sleeve 47, the blocking sleeve 47 is further introduced into the interior 41 of the housing 27 along the blocking direction A after reaching the sealing portions 33 and 35, and / or the sealing portions 33 and 35 are elastically deformed along the blocking direction A, so as to thereby achieve sealing of the interior 41 of the housing 27.

[0090] In addition, by way of example, the sealing portions 33 and 35 are integrally formed with the housing 27, so that in particular the entire housing 27 is elastically deformable and forms the aforementioned flexible inner sleeve 53 of the clamp lock 11. In addition, in addition to the energy source 25, the housing 27 also surrounds the electric motor 19, the gear 87 and the drive transmission element 23, and the latch element 21 emerges from the housing 27 in a sealed manner, so that other electronic components of the clamp lock 11 can likewise be arranged to prevent damage by incoming liquids in the sealed housing 27.

[0091] Although the housing 27 is elastically deformable as a whole by way of example, the housing 27 is supported on a rigid and stable outer housing 55 at the outer side opposite the sealing portions 33 and 35, so that the housing 27 cannot escape the movement of the blocking sleeve 47 on the blocking of the cover 31, and the above-mentioned compression and / or elastic deformation of the sealing portions 33 and 35 occurs. When the cover 31 is blocked, the sealing portions 33 and 37 therefore exert a force on the cover 31, and in particular on its blocking sleeve 47, which is directed opposite to the deformation and / or compression experienced, so that the slot between the side wall 39 of the housing 27 and the blocking sleeve 47 can be closed and the internal space 41 of the housing 27 can be reliably sealed. Therefore, the sealing is carried out in the radial direction relative to the blocking direction A, and not in the axial direction as in conventional solutions, so that the sealing can be achieved directly by blocking the cover 31, and it is not necessary to first generate a sufficient axial force by fastening the cover 31 to the housing 27 and / or the outer housing 55 by means of a separate fastening device such as a screw. Therefore, for the clamp lock 11 shown here, such additional fastening means can be omitted.

[0092] At this point, the clamp lock 11 disclosed herein enables a safe and reliable sealing of the interior space 41, wherein, however, access to the interior space 41, such as replacement of a depleted or consumed energy source 25, can be easily achieved since the cover 31 can be removed without tools simply by pulling it off the housing 27.

[0093] In order to further facilitate this removal of the cover 31, the aforementioned handle 85 is provided at the cover 31, wherein a handle recess 77 is also formed at the outer housing 55. These handle recesses 77 make it possible to grasp the blocking cover 31 behind the handle 85 on both sides and in this way pull it off the housing 27. In particular, in the embodiment shown, the handle recess 77 is formed by a handle recess 79 which is provided at the housing 27 and is arranged at the portion 61 of the housing 27 which engages on the aforementioned edge portion 59 of the outer housing 55 (see Figure 4 for engagement on the edge portion 59 by means of the engagement portion 61, Figure 2 and Figure 6 Since the portion 61 of the housing 27 is engaged on the edge portion 59, the cover 31 is also in axial contact with the housing 27 and thus with the elastically deformable portion, wherein this axial contact of the cover 31 with the housing 27 also contributes to a reliable sealing of the inner space 41 of the housing 27.

[0094] In addition to sealing the inner space 41, the cooperation between the blocking sleeve 47 and the sealing parts 33 and 35 also makes it possible to fix the cover 31 to prevent unintentional release from the housing 27 opposite to the blocking direction A, because for this purpose it is necessary to overcome the static friction between the blocking sleeve 47 and the sealing parts 33 and 35. In addition, a latching flange 49 is provided at the housing 27, and the latching flange 49 also extends circumferentially into the inner space 41 at the side wall 39 of the housing 27, and when the cover 31 is blocked, the latching flange 49 engages in the aforementioned latching groove 51 of the cover 31, and in addition, the latching flange 49 can axially hold the cover 31 at the housing 27 relative to the blocking direction A, and can fix the cover 31 to prevent unintentional release of the cover 31 from the housing 27 (see in particular Figure 4 ).

[0095] In addition, in particular, Figure 4 and Figure 5 The clamp lock 11 is shown to have a rigid holder 63 for holding the energy source 25, and a spring 65 for tensioning the energy source 25 is particularly arranged at the holder. In addition, the motor 19, the gear and the drive transmission element 23 are also supported on the rigid holder 63. The holder 63 has two outwardly extending holder support edges 71 (see in particular Figure 5 ), the retainer support edge contacts the housing support edge 69 formed at the housing 27 in the blocking direction A (see Figure 4 In particular, during assembly of the clamp lock 11, the retainer 63 with the components retained therein may be inserted into the interior space 41 of the housing 27 such that the housing bearing edge 69 may form an axial abutment for the retainer 63 to indicate its correct positioning.

[0096] Figure 6 The housing 27 or the flexible inner sleeve 53 is illustrated again, wherein in particular the replacement opening 29 at the side wall 39 of the housing 27 and the circumferential sealing portions 33 and 35 are identifiable. Figure 6 The housing 27 is shown to have a raised support portion 83 on the outer side. Figure 1 As shown, the bearing portion 83 engages in a bearing recess 81 formed at the outer housing 55 in the assembled state of the clamp lock 11, and thereby fixes the housing 27 axially in the outer housing 55 relative to the blocking direction A. In particular, during the assembly process of the clamp lock 11, it can be provided that the components arranged in the housing 27 are first inserted into the housing 27, so that the housing 27 in which the components are pre-assembled is inserted into the outer housing 55 in a single assembly step, and the housing 27 is positioned so that the raised bearing portion 83 engages in the bearing recess 81.

[0097] In summary, a reliable sealing of the interior space 41 can thus be achieved in the illustrated clamp lock 11 without the need for additional fastening or sealing means, such as a sealing ring arranged axially between the cover 31 and the housing 27. The clamp lock 11 is particularly suitable for use as a lockout padlock, with which switches or stoppers of industrial systems must be blocked during service work to prevent unintentional activation of the system and danger to maintenance personnel. With such a clamp lock 11, unsafe access to the energy source 25 is essentially unproblematic, since the clamp lock 11 is not used as an anti-theft or disconnection protection, but only as a barrier, for example, to prevent unintentional activation of the system and / or unintentional opening of fluid lines. However, on the contrary, it is precisely in such an environment that a reliable sealing of the housing 27 is required, and this can be achieved by the contact of the two circumferential sealing portions 33 and 35 and the cover 31 with the portion 61 of the flexible and / or elastically deformable housing 27, which is engaged on the edge portion 59. In view of the possibility of such application, the outer housing 55 and / or the lock band 15 can also be made of a non-conductive material, and in particular of plastic, to achieve additional safety when used as a lockout padlock and a lightweight design of the band lock 11, which allows maintenance personnel to conveniently carry the band lock 11 or a plurality of such band locks 11. In addition, the housing 27, the cover 31 and / or the sealing parts 33 and 35 can be made of a battery acid-resistant material in particular to be able to reliably prevent the escape of battery acid, especially in such an environment of an industrial system. For example, the housing 27 and / or the sealing parts 33 and 35 can also be made of silicone.

[0098] Reference numerals list

[0099] 11 Clamp lock

[0100] 13 Lock body

[0101] 15 Locking hoop

[0102] 16 Arm

[0103] 17 Locking mechanism

[0104] 18 Notch

[0105] 19 Electric Motor

[0106] 21 Latch element

[0107] 23 Drive transmission element

[0108] 25 Energy Source

[0109] 27 Housing

[0110] 29 Replacement opening

[0111] 31 Cover

[0112] 33 Sealing part

[0113] 35 Sealing part

[0114] 37 Sealing lip

[0115] 39 Sidewall

[0116] 41 Internal Space

[0117] 43 Elevated part

[0118] 45 Closing plate

[0119] 47 Blocking sleeve

[0120] 49 Latch flange

[0121] 51 Latch groove

[0122] 53 Inner sleeve

[0123] 55 External housing

[0124] 57 Shell opening

[0125] 59 Edge

[0126] 61 Joint

[0127] 63 Retainer

[0128] 65 Spring

[0129] 67 Batteries

[0130] 69 Shell support edge

[0131] 71 Retainer support edge

[0132] 73 Supporting part

[0133] 75 Contact part

[0134] 77 Handle dent

[0135] 79 handle recess

[0136] 81 Support recess

[0137] 83 Raised support section

[0138] 85 Handle

[0139] 87 Gear

[0140] A blocking direction

Claims

1. A portable clamp lock (11), It comprises a lock body (13) and a lock hoop (15), in, The locking hoop (15) can be selectively introduced into the lock body (13) or at least partially separated from the lock body (13), and wherein the lock body (13) comprises an electromechanical locking mechanism (17), wherein the electromechanical locking mechanism (17) is configured to selectively lock the locking hoop (15) introduced into the lock body (13) to prevent separation from the lock body (13), or to release the locking hoop (15) for separation from the lock body (13), The electromechanical locking mechanism (17) comprises an electric motor (19), at least one latching element (21) which can be driven by the electric motor (19), and an energy source (25) for supplying electrical energy to the electric motor (19). wherein the energy source (25) is arranged in a housing (27), the housing (27) having an exchange opening (29) through which the energy source (25) can be introduced into the housing (27) and removed from the housing (27), and The clamp lock (11) has a cover (31), and the cover (31) can be blocked onto the housing (27) along a blocking direction (A) to close the replacement opening (29). The housing (27) or the cover (31) has at least one elastically deformable sealing portion (33, 35), wherein the sealing portion (33, 35) forms a raised portion (43) at a side wall (39) of the cover (31) or the housing (27), wherein the raised portion (43) extends circumferentially around the side wall (39), Wherein, the sealing portion (33, 35) can be at least one of the following: The sealing portion is compressed between the cover (31) and the housing (27); and By plugging the cover (31) onto the housing (27) to seal the replacement opening (29), the sealing portion is elastically deformed in the plugging direction (A).

2. The portable clamp lock (11) according to claim 1, in, The cover (31) has a closing plate (45), which is oriented perpendicular to the blocking direction (A), and when the cover (31) is blocked onto the shell (27), the closing plate (45) extends along the extension plane of the replacement opening (29), and wherein the cover (31) has a blocking sleeve (47), which is adjacent to the closing plate (45) and extends circumferentially around the closing plate (45) in the blocking direction (A), wherein the blocking sleeve (47) is configured to cooperate with the at least one sealing portion (33, 35) of the shell (27), or wherein the blocking sleeve (47) has the at least one sealing portion (33, 35).

3. The portable clamp lock (11) according to claim 2, in, The housing (27) has the at least one sealing portion (33, 35), and wherein the plugging sleeve (47) is configured to cooperate with the at least one sealing portion (33, 35) so as to seal the replacement opening (29).

4. The portable clamp lock (11) according to claim 1, in, The at least one sealing portion (33, 35) extends from the side wall (39) of the housing (27) into an interior space (41) of the housing (27).

5. The portable clamp lock (11) according to claim 1, in, The entire housing (27) is at least one of elastically deformable and made of silicone.

6. The portable clamp lock (11) according to claim 1, in, The at least one sealing portion (33, 35) is integrally formed with the housing (27).

7. The portable clamp lock (11) according to claim 1, in, The housing (27) surrounds the electric motor (19) in a sealed manner.

8. The portable clamp lock (11) according to claim 1, in, The housing (27) has a circumferential latching flange (49), and a circumferential latching groove (51) is formed at the cover (31), wherein the latching flange (49) engages in the latching groove (51) when the cover (31) is blocked.

9. The portable clamp lock (11) according to claim 1, in, The housing (27) forms a flexible inner sleeve (53) of the clamp lock (11), and wherein the clamp lock (11) has a rigid outer housing (55) surrounding the housing (27) and supporting the housing (27) at the rigid outer housing (55).

10. The portable clamp lock (11) according to claim 9, in, The outer shell (55) has a shell opening (57) which surrounds the replacement opening (29) and is bounded by a circumferential edge portion (59), wherein the shell (27) extends beyond the outer shell (55) relative to the blocking direction (A) and engages on the edge portion (59).

11. The portable clamp lock (11) according to claim 9, in, The housing (27) has a raised bearing section (83) on the outside, which engages in a bearing recess (81) of the outer housing (55).

12. The portable clamp lock (11) according to claim 9, in, At least one of the outer shell (55) and the locking hoop (15) is made of a non-conductive material.

13. The portable clamp lock (11) according to claim 1, in, A rigid holder (63) for holding the energy source (25) is arranged in the housing (27).

14. The portable clamp lock (11) according to claim 13, in, The shell (27) has a shell support edge (69), which extends into the inner space (41) of the shell (27), and wherein the retainer (63) has an outwardly extending retainer support edge (71), wherein the retainer (63) is supported at the shell support edge (69) along the blocking direction (A) by the retainer support edge (71).

15. The portable clamp lock (11) according to claim 1, in, The cover (31) has at least one support portion (73) which extends into the housing (27) when the cover (31) is blocked, and the support portion (73) is configured to secure the energy source (25) to prevent movement opposite to the blocking direction (A).

16. The portable clamp lock (11) according to claim 1, in, The sealing portion (33, 35) is configured as a circumferential sealing lip (37).

17. The portable clamp lock (11) according to claim 1, in, Two circumferential sealing portions (33, 35) are provided on the housing (27) or the cover (31) and are arranged offset from each other along the blocking direction (A).

18. The portable clamp lock (11) according to claim 1, in, At least one of the sealing portion (33, 35), the housing (27) and the cover (31) is formed of an acid-resistant material.

19. The portable clamp lock (11) according to claim 1, in, In the fully assembled state of the clamp lock (11), the cover (31) can be released from the housing (27) without the need for tools.

20. The portable clamp lock (11) according to claim 1, in, Implement at least one of the following: No separate fastening means is provided for fastening the cover (31) to the housing (27); and With respect to the blocking direction (A), no additional sealing device is arranged axially between the housing (27) and the cover (31).

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