Handle actuator devices and related assemblies for accessing industrial machinery or plants

Abstract

A handle actuator device for a barrier or protective panel for access to an industrial machine or plant, the access (A) comprising a movable part (M) and a fixed frame (T) on which a fixed device (2) of the receiving or transmitting type connected to the machine or plant is fixed, the handle actuator device (1) comprising a shell (3) having mounting means for the movable part (M) of the access (A) and provided with a handle part (4) adapted to be grasped by a user in order to move the movable part (M) of the access (A), and an actuator (5) associated with the shell (3) for moving the movable part (M) of the access (A). and an actuator (5) provided with a transmitting or receiving first element (6) arranged on a fixed frame (T) of the access (A) and adapted to interact with the receiving or transmitting fixed device (2) when the access (A) is closed to enable / disable one or more operations of the machine or plant to be monitored, the shell (3) comprising a housing (7) in which the first element (6) is shaped to accommodate the actuator (5) along at least two configurations oriented according to at least two different positions and facing at least two different faces (8, 9) of the housing (7).

Description

【Technical Field】 【0001】 The present invention finds application in the field of industrial electrical devices, and particularly aims at a handle actuator device designed for barriers or protective panels for protecting access to machines or industrial plants. The present invention also relates to an actuator assembly provided with the above handle actuator device for access control. 【Background Art】 【0002】 As is known, access to industrial machines or plants requires continuous monitoring through the provision of means to prevent operators from entering the operating boundary either voluntarily or accidentally. 【0003】 For this purpose, access to barriers, boundaries, and protective panels, etc., generally has one or more safety devices connected to the power circuit of the machine or plant, and in some cases, auxiliary service circuits, which enable access within the boundary only after the machine or plant or their dangerous parts are blocked, and always notify both the operating state of the machine or plant and any abnormalities that can affect any part of the plant. 【0004】 The safety level of these devices must be higher the higher the risk that an operator may encounter if they enter the boundary while the machine or plant is still operating. 【0005】 A well-known type of access control device is a safety handle, i.e., a device that enables opening and closing of access, and enables execution of a stop of the operation of only the system or a part thereof simultaneously when the access is opened or simply unlocked. 【0006】 An example of a safety handle is disclosed in U.S. Patent Publication No. 2005 / 108945, in which the handle comprises magnetic sensor means for detecting the release of access, and controls the resulting release of a power circuit and the resulting shutdown of the system. 【0007】 Another example of a safety handle for access control is disclosed in German Patent Application Publication No. 102009039591, in which the handle is associated with actuator means designed to interact with an actuator device associated with a fixed portion of the access. 【0008】 Furthermore, International Publication No. 2019 / 229717, under the name of the same applicant, discloses a more advanced type of handle, in which the body is formed by anchor brackets made to be fixed to the frame of the movable part of the access, and then a body or casing which also functions as a handle and is subsequently fixed to the brackets. 【0009】 The bracket also has a seat for securing an actuator equipped with an RFID (radio frequency identification) tag designed to interact with appropriate control means, and an antenna positioned on a switch or sensor, typically applied to the fixed part of the frame, transmits that access is closed, enabling the activation of the protected machine or plant. 【0010】 The actuator element consists of a block that houses an RFID tag internally and is equipped with a centering and holding element that, in accordance with the typical operating pattern of this type of security device, is inserted into the appropriate slot present in the fixed device and then works in cooperation with the lock / unlock mechanism present in the fixed device. 【0011】 The bracket is designed to house the actuator in two different orientations, depending on whether the access is via a right-hand or left-hand hinged opening, or a sliding opening. 【0012】 The above solutions are particularly suitable for areas where a level of safety is required that prevents access even during the operation of a machine or plant, or for any other situation where safety conditions within a protected boundary cannot be guaranteed. 【0013】 Furthermore, because this solution is particularly robust, it requires space and structure suitable for fixing, typical of access that requires a certain level of security. 【0014】 At the same time, there is a need for a lighter solution that is suitable for small access points in a fixed space and does not require blocking access at the same time as closing the device. 【0015】 In these cases, common solutions that provide the use of an actuator system associated with the handle, whether electromechanical, RFID tag / antenna, or similar electronic system, generally require designing different models based on the final orientation of the handle, as the possible orientations of the actuator means are generally limited. 【0016】 Alternatively, these solutions would require equipping the system with multiple actuators suitable for selectively engaging receiving elements located on fixed devices such as switches or sensors based on the actual position the handle has taken. [Overview of the Initiative] 【0017】 The object of the present invention is to overcome the above-mentioned drawbacks by realizing a handle actuator device made for application to barriers or protective panels for monitoring industrial machinery or plants, characterized by specific efficiency and relative cost-effectiveness. 【0018】 A specific objective is to provide a handle actuator device, designed to be applied to a barrier or protective panel, that can be applied to the access frame in different orientations depending on the available space and the location of a switch device designed to interact with the access during closure. 【0019】 Another objective is to provide a handle actuator device applicable to barriers or protective panels that does not require structural modifications depending on the orientation selected during fixing, and only requires a few simple reconfiguration operations. 【0020】 Another objective is to provide a handle actuator device applicable to barriers or protective panels, which can operate in different fixed orientations by a single actuator element. 【0021】 Another objective is to provide a handle actuator device applicable to barriers or protective panels, characterized by a simple and compact structure. 【0022】 These objectives, as well as other objectives which will become clearer below, are achieved by a handle actuator device made to be associated with access to a barrier or protective panel of an industrial machine or plant, where the access comprises a movable part and a fixed frame on which a fixed receiving or transmitting device connected to the machine or plant is mounted, and the actuator device, according to claim 1, comprises a shell having means for mounting on the movable part of the access and provided with a handle portion made for a user to grip in order to move the movable part of the access, and at least one actuator, associated with the shell and provided with a first transmitting or receiving element made to be transmitted or transmitted and to be enabled / disabled one or more operations of the machine or plant to be monitored in interaction with the receiving or transmitting device when closing the access. 【0023】 According to features specific to the present invention, the shell has at least one housing, which is shaped to accommodate the at least one actuator along at least two configurations in which the first element is oriented according to at least two different positions and selectively faces at least two different surfaces of the housing. 【0024】 In this way, the position of the first transmitting or receiving element, such as an RFID tag or antenna, can be changed according to the orientation of the shell and / or the orientation of fixed devices present on the access frame, once it is installed on the movable part of the access, and the handle device can be installed in a small space without compromising its ability to interact with fixed devices. 【0025】 Advantageous embodiments of the present invention can be obtained according to the dependent claims. [Brief explanation of the drawing] 【0026】 Further features and advantages of the present invention will become more apparent in light of the following, non-limiting example shown with the aid of the accompanying diagrams, of several preferred but non-exclusive embodiments and detailed descriptions of a handle actuator device according to the present invention, and an actuator assembly comprising the same. [Figure 1] Figure 1 is a perspective view of the assembly in the first embodiment, applied to a hinge opening access, the access being open. [Figure 2] Figure 2 is a perspective view of the assembly of Figure 1, the access being closed. [Figure 3] Figure 3 is a perspective view of the assembly of Figure 1 in a second assembly configuration, applied to an access having a slide opening, the access being open. [Figure 4] Figure 4 is an exploded perspective view of the actuator device in the second embodiment. [Figure 5] Figure 5 is a front cross-sectional view of the actuator device of Figure 1 in a first operating configuration. [Figure 6] Figure 6 is a front cross-sectional view of the actuator device of Figure 1 in a second operating configuration. [Figure 7] Figure 7 is an exploded perspective view of the actuator device in the third embodiment. [Figure 8] Figure 8 is an exploded perspective view of the actuator device of Figure 7, associated with a detector device along a first operating configuration. [Figure 9] Figure 9 is an exploded perspective view of the actuator device of Figure 7, associated with a detector device in a second operating configuration. [Figure 10] Figure 10 is a front cross-sectional view of a variant of the actuator device of Figure 7 in a first operating configuration. [Figure 11] Figure 11 is a front cross-sectional view of the actuator device of Figure 9 in a second operating configuration. [Figure 12] An exploded perspective view of a detector device according to a further embodiment. [Modes for carrying out the invention] 【0027】 Referring to the attached diagrams, several preferred but non-exclusive embodiments of a handle actuator device designed to be applied to boundary access or safety barriers deployed to protect machinery or industrial plants are shown. 【0028】 In particular, access may preferably be provided with appropriate electronic or electromechanical safety devices designed to interrupt the operation of the machine or plant or part thereof when it is opened or simply unlocked, or to indicate that an unlocking or opening has occurred to allow worker intervention, but these are in line with known methods and will not be described in detail below. 【0029】 In general, the actuator device according to the present invention, as shown in 1, would be designed to be mounted on the movable part M of access A and interact with a fixed device 2 mounted on the fixed frame T of access A when closing the access itself, and could be connected to one or more power and / or service circuits of a machine or plant to change one or more operations of the machine or plant by interaction between the movable actuator device 1 and the receiving fixed device 2. 【0030】 Figures 1 and 2 show a first configuration mode of an assembly formed by a movable actuator device 1 and a fixed receiving device 2, which is associated with an access A having a hinged opening shown in both the open and closed positions, respectively, and the movable actuator device 1 is mounted in a horizontal position. 【0031】 Figure 3 shows actuator device 1 in a different position, mounted vertically on the movable part M of access A. 【0032】 On the other hand, Figure 4 shows in detail a further embodiment of a handle actuator device 1 with a general configuration, which includes a shell 3 on which means for mounting access A to a movable part M, and a handle portion 4 for the user to grasp in order to move the movable part M of access A. 【0033】 Shell 3 is also associated with an actuator 5 which is provided with a first transmitting element 6 that is configured to interact with the receiving device 2 when closing access A to enable / disable one or more operations of the machine or plant to be protected. 【0034】 In particular, the shell 3 is provided with a housing 7 shaped to accommodate the actuator 5 along at least two configurations in which the orientation of the first transmitting element 6 differs, where the first element 6 selectively faces two different surfaces 8,9 of the housing 7. 【0035】 Preferably, the actuator 5 will be inserted into the housing 7 in three different orientations in which the first transmitting element 6 selectively faces three different surfaces 8, 9, and 10 of the housing 7. 【0036】 These configurations allow the position of the transmitting element 6 to be adjusted according to the horizontal or vertical mounting direction of the shell 3, and also according to the position of the receiving device 2 on the fixed frame T, enabling interaction between the movable actuator device 1 and the fixed receiving device 2 regardless of orientation, whether the orientation of the two devices defining the assembly is horizontal or vertical, and whether the first device moves from left or right, from top to bottom or vice versa relative to the second device when access A is closed. 【0037】 Preferably, though not exclusive, the first transmitting element 6 is remotely operated and may be equipped with an RFID (radio frequency identification) tag designed to communicate with a second receiving element, particularly an antenna (not shown) located in a fixed receiving device 2, to indicate that access A has been closed. 【0038】 Advantageously, the RFID tag 6 would be coded to be recognizable only by its receiving element, preventing the use of actuators other than those connected to actuator device 1 and thus avoiding the risk of insecure opening of access A. 【0039】 However, the transmitting element 6 may also be a magnetic or electromagnetic, optical or other type of sensor, or another type having an electromechanical action such as a key actuator, so it is understood that the type of the receiving element will be matched to the nature of the transmitting element. 【0040】 Similarly, it may be possible to provide a modified example in which the actuator device 1 has a receiving first element, while the second element located on the fixed device 2 is a transmitting type. 【0041】 As can be seen in the diagram, the actuator 5 is equipped with a prismatic bearing block 11 that is suitable for fitting snugly into the housing 7, is completely enclosed within the shell 3, and moves in different directions after rotation around the central axis X. 【0042】 The bearing block 11 includes a seat 12 for mounting the first element 6 of the transmitter, which is configured such that the block 11 is selectively positioned to face one of the faces 8, 9, or 10 of the housing 7 after rotation around the central axis X. 【0043】 The first element 6 can be inserted into the seat portion 12 of the bearing block 11 in a fixed or detachable manner. 【0044】 The stable positioning of the first transmission element 6 in the seat 12 can be achieved by bonding, occlusion, or different mechanical fastening means. 【0045】 For example, from the cross-section of Figure 5, which shows a modified version of the above embodiment, it can be seen that the block 11 is arranged in a first orientation such that the first transmitting element 6 is positioned opposite the outer surface 8 of the housing 7. 【0046】 In Figure 6, block 11 is instead rotated 90° relative to the previous configuration, with the first transmitting element 6 positioned opposite the lower surface 9 of housing 7. 【0047】 Furthermore, if it is rotated 90° in the opposite direction to the first configuration, the first transmitting element 6 should be in a third position facing the upper surface 10 of the housing 7. 【0048】 In a modified example not shown, the block 11 may be provided with two or more seats on which the first element 6 of the transmitter can be selectively positioned, so that the orientation of the first element 6 can be changed inside the housing 7 without rotating the block 11. 【0049】 In yet another, not-illustrated variation, the block 11 may be provided with two or more first elements 6 inserted in a manner that is fixed to or detachable from the corresponding seat portion of the block 11. 【0050】 The structure of the housing 7 and block 11 shown in the diagram is such that once block 11 is inserted into the housing 7, it cannot be rotated. Therefore, the orientation of block 11 and, consequently, the placement of the first transmission element 6 must be determined before inserting block 11 into the housing 7. 【0051】 However, it would be possible to provide a configuration that allows the orientation of block 11 to be adjusted even after it has been inserted into housing 7. 【0052】 The block 11 is securely fixed inside the housing 7 by screw fastening means 13 or similar means, which will be inserted into appropriate axial passages 14 of the block 11 that are aligned with mounting holes present in the housing 7, although these are not visible in the figure. 【0053】 Modified versions, not shown, in which actuator 5 lacks block 11 may be provided. In this case, the actuator may be defined solely by a transmitting or receiving first element 6 that can be inserted into a suitable seat directly obtained inside the housing 7. Furthermore, it may be possible to provide two or more transmitting or receiving first elements 6 that can be simultaneously inserted inside each seat obtained inside the housing 7, allowing them to selectively interact with the receiving device 2 depending on the orientation assumed by the device actuator 1. 【0054】 Regardless of the configuration of actuator 5, the shell 3 can be installed by directly screwing it into the movable part M of access A. This installation method would be particularly suitable for light shelters where it is not necessary to apply excessive stress to the components when opening. 【0055】 According to the two first modifications described above, the fastening means comprises a plate 15 having an axial screw hole 16 and configured to define a seat for screwing a first fixing screw into a suitable axial slot 17 located within the block 11. 【0056】 Conveniently, block 11 will have a pair of intersecting slots 17, 18 for selectively accommodating the perforated plate 15 regardless of the orientation of block 11 within housing 7, as seen in the same Figures 5 and 6. 【0057】 On the opposite side of plate 15, the shell 3 can be secured to the movable part M of access A by providing a threaded element, such as a nut 19, which will define a further seat for screwing in a second fixing screw. 【0058】 Figures 7 to 9 show further modifications, in which the mounting means is also provided with a fixing bracket 20. 【0059】 The bracket 20 has a central bar 21 that is provided with holes or slots 22 for passing screws or other mechanical fastening members through, and is designed to be mounted on the shell 3. 【0060】 The bracket 20 has two L-shaped folded lateral arms 23, 24 which are fixed in place of the side walls of the shell 3 by further fastening members inserted through the lateral passages of the shell itself. 【0061】 These side passages can be advantageously closed by tamper-proof caps 25 designed to close off each passage and prevent external access to the fastening elements. 【0062】 In this manner, it would be impossible to remove the shell 3 from the bracket 20 without leaving any trace of the action, and therefore, it would be impossible to access the fastening means of the bracket 20 without leaving any trace. 【0063】 Furthermore, it would be possible to avoid a situation where, once actuator 5 is separated from access A and approaches receiving device 2, actuator 5 is recognized, and even if access A is open, it may be detected as being closed. 【0064】 One of the two arms, particularly the longer arm 23, will also be inserted inside the block 11 so that the bracket 20 defines at least partially both the mounting means for the shell 3 and the fastening means for the block 11. 【0065】 In particular, in this case as well, block 11 will have at least one axial slot 17 into which the lateral arm 23 fits. 【0066】 Conveniently, block 11 will have a pair of intersecting slots 17, 18 to selectively house the arm 23 depending on the orientation of block 11 inside housing 7, as shown in Figures 10 and 11. 【0067】 The other lateral arm 24 of the bracket 20 may instead be fitted into the respective lateral slots 26 provided in the shell 3. 【0068】 The handle actuator device 1 may be equipped with additional functions and may be integrated, for example, inside the shell 3. 【0069】 For example, the shell 3 may be housed inside it, or it may be associated with one or more control and / or signaling devices that assist in the operation of a system that can be connected to the circuits of a machine or plant through the provision of appropriate means for electrical and / or electronic connections. 【0070】 For example, it can be observed that the front handle portion 4 of the shell 2 has a fixed or detachable front cover 27. 【0071】 The cover 27 may be used to customize the handle actuator device 1 according to user needs, for example, by reporting specific descriptions or symbols, or by changing its color. 【0072】 The cover 27 can be attached to the front handle portion 4 in a detachable or fixed manner. 【0073】 In certain modifications, the handle portion 4 may be hollow inside in order to insert the above-mentioned auxiliary control devices and / or signaling devices, such as a printed circuit board (PCB) 28, which are connected to the circuits of a machine or plant by electrical and / or electronic connections located inside the shell 3. 【0074】 In some specific modifications not shown, it would be possible to insert one or more light sources, such as one or more LED lights directly placed on the PCB28, which can be illuminated in different ways depending on the state of the machine or plant to provide immediate evidence. 【0075】 For this purpose, the cover 27 will be made at least partially optically transparent or translucent in order to allow the light beam generated by the light source to pass through. 【0076】 In yet another variation, the actuator device 1 may be provided with a command or signaling device 29 suitable for connection to the power supply and / or service circuit of the machine or plant to be protected. 【0077】 The command or signal device 29 may be an actuation button, as shown in the figure, and is provided with a manual second actuator that is located inside the shell 3 and connected to the PCB 28, depending on the modality which depends on the type of command, and is configured to interact with a contact unit 30. 【0078】 As an alternative to the activation button, but not limited to, different types of command or signaling devices may be provided, such as selectors, displays, touch panels, RFID recognition sensors, or any other electrical, electronic, or electromechanical devices suitable for commanding or signaling to one or more power circuits and / or service circuits of a machine or plant. 【0079】 Further devices that may be associated with or inserted into Shell 3 may be optical and / or audio signaling devices or sensors, or other receiving devices for the recognition of identification devices such as tokens, which may allow workers to request permission to enter the safety boundary. 【0080】 The cover 27 can be secured to the shell 3 by screw fasteners or other types of connectors 31, or by snap fasteners or crimp-fit ​​fasteners, without any particular theoretical constraints. 【0081】 Finally, Figure 12 shows a particular embodiment of a position sensor defining a fixed receiving device 2, although this position sensor may not necessarily be usable within the assembly according to the present invention, it may find a place in any further type of application where a position sensor or presence sensor is used. 【0082】 In this configuration, the sensor 2 is provided with a protective casing 32 having a fixing plate 33, into which the sensor 2 is inserted and fixed, and a fixing slot 36 suitable for adjusting the position of the sensor 2 is provided. 【0083】 The upper cover 34 will, if necessary, cover the plate 33 and sensor 2 while leaving at least its sides 35 free to align with the position of the antenna or other receiving or even transmitting elements, so as not to interfere with communication with the RFID tag 6, while simultaneously concealing it from view to prevent access to the RFID tag 6 and protecting the cable output of sensor 2. 【0084】 The solution illustrated in the drawings above would be particularly suitable for realizing a light-type handle actuator device that is suitable for application to barriers or protective panels that do not require mechanical access isolation. 【0085】 In this case, the actuator 5 would not have a retaining lock or other mechanism designed to mechanically engage or interact with the fixing device 2 in order to keep access A closed even after the application of a predetermined maximum release stress. 【0086】 It is understood that similar or technically equivalent solutions may also be used in handle actuator devices having a more robust structure and / or equipped with locking means of the type described in cited International Publication No. 2019 / 229717.

Claims

[Claim 1] A handle actuator device for a barrier or protective panel for accessing industrial machinery or plants, The access (A) comprises a movable part (M) and a fixed frame (T) to which a receiving or transmitting fixed device (2) connected to a machine or plant is fixed. The handle actuator device (1) is - A shell (3) having means for mounting the access (A) to the movable part (M), and provided with a handle portion (4) for the user to grip in order to move the movable part (M) of the access (A), - An actuator (5) is associated with the shell (3) and is provided with at least one transmitting or receiving first element (6) which is located on the fixed frame (T) of the access (A) and interacts with the receiving or transmitting fixed device (2) when the access (A) is closed to enable / disable one or more operations of a machine or plant to be monitored, The device comprises a housing (7) having a shell (3) which is shaped to accommodate the actuator (5) so as to completely enclose it, along at least two configurations which are configured to selectively face at least two different surfaces (8, 9) of the housing (7), and which allow at least one of the transmitting or receiving first elements (6) to be housed in at least two different positions inside the housing (7). [Claim 2] The device according to claim 1, wherein the actuator (5) is inserted into the housing (7) in three different orientations such that the first transmitting or receiving element (6) selectively faces three different surfaces (8, 9, 10) of the housing (7). [Claim 3] The device according to claim 2, wherein the actuator (5) comprises a prismatic bearing block (11) that, after rotation around its central axis (X), is positioned in one of the different orientations and is fitted snugly into the housing (7). [Claim 4] The device according to claim 3, wherein the bearing block (11) has a seat (12) for mounting the first transmitting or receiving element (6), the seat (12) being positioned to selectively face any of the surfaces (8, 9, 10) of the housing (7) after rotation of the bearing block (11) around the central axis (X). [Claim 5] The device according to claim 1 or 2, wherein the housing (7) comprises two or more seats for stable insertion and / or detachable insertion of each of the transmitting or receiving first elements (6). [Claim 6] The device according to claim 4, further comprising means for fixing the actuator (5) in the housing (7). [Claim 7] The device according to claim 6, wherein the fixing means comprises a bracket (20) having a central bar (21) mounted on the back of the shell (3) and having defined at least a portion of the fixing means, and a lateral arm (23) having to be inserted into corresponding axial slots (17, 18) of the bearing block (11) for stable fixing of the bearing block (11) in the housing (7). [Claim 8] The device according to claim 7, wherein the bearing block (11) is provided with a pair of axial slots (17, 18) that intersect each other and selectively accommodate the lateral arm (23) depending on the orientation of the bearing block (11) within the housing (7). [Claim 9] The shell (3) houses or is associated with one or more control devices and / or signaling devices that are suitable for connection to the circuit of the machine or plant and assist in the operation of the system. The aforementioned devices are selected from optical devices, sound signal devices, and recognition devices. The device according to any one of claims 1 to 8, wherein the handle portion (4) is provided with a front cover (27) that is at least partially luminescent, and one or more suitable light sources are housed inside and emit a visible light beam or signal through the cover (27). [Claim 10] An actuator assembly for a barrier or protective panel for accessing industrial machinery or plants, Access (A) comprises a movable part (M) and a fixed frame (T), The assembly is - An actuator device (1) having a movable handle, comprising a shell (3) having a handle portion (4) provided for the user to grasp in order to move the movable portion (M) of the access (A), wherein the shell (3) houses an actuator (5) provided with a first transmitting or receiving element (6), - A receiving or transmitting fixed device (2) is installed on the fixed frame (T) of the access (A) and connected to a machine or plant, wherein the fixed device (2) includes a receiving or transmitting second element which interacts with the transmitting or receiving first element (6) when the access (A) is closed to enable / disable one or more operations of the machine or plant to be monitored, The assembly comprises a shell (3) having a housing (7), the housing (7) being shaped to accommodate the actuator (5) so as to completely enclose it, with the first transmitting or receiving element (6) being housed in two different positions inside the housing (7) and along at least two configurations facing two different surfaces (8, 9) of the housing (7). [Claim 11] The assembly according to claim 10, wherein the transmitting element between the first transmitting or receiving element (6) and the second receiving or transmitting element is a remotely operated transmitting element such as an RFID (radio frequency identification) tag for communicating with other receiving elements such as an antenna. [Claim 12] The assembly according to claim 10, wherein the fixed device (2) is a receiving device selected from the group including switches and position sensors, and is provided with a second receiving element configured to communicate remotely with the first transmitting element (6) of the actuator device (1). [Claim 13] A presence sensor made for use in an actuator assembly of the type described in claim 12 for a barrier or protective panel for access to industrial machinery or a plant, The sensor comprises a receiving device (2) provided with a receiving element, and a protective casing (32) having a fixed plate (33) having a housing for the receiving device (2) and a cover (34) designed to cover the fixed plate (33), wherein at least one of the surfaces (35) on which the receiving element is located remains free, the presence / absence sensor. [Claim 14] The presence sensor according to claim 13, wherein the receiving device (2) has at least one output for a connecting cable or connector, and the cover (34) is designed to cover the at least one output to prevent access and to provide tamper-proof functionality.

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