Safety switch with protective lock

Abstract

The invention relates to a safety switch (10) comprising a movably mounted locking bolt (30) configured to lock an actuator (12) in a defined locked position relative to the safety switch (10) and a movably mounted locking barrier (60) movable between a first position and a second position. The locking barrier (60) is configured to fix the movably mounted locking bolt (30) in the second position via a form fit.

Description

Technical Field

[0001] This disclosure relates to safety switches and safety switch devices including safety switches and actuators. Background Technology

[0002] Safety switches and corresponding safety switching devices are used in safety technology to reduce the risks posed to personnel by machines and technical systems to an acceptable level. Typically, such safety switching devices are used to ensure safe access to hazardous areas, for example, in conjunction with safety doors used as separation and protection devices. In this case, the safety switch allows the hazardous system to operate within the hazardous area only if the safety switching device can ensure that the safety door is properly locked. The system can be activated via a safety controller, which is connected to the safety switching device and receives appropriate safety-related control signals from the safety switching device.

[0003] This type of safety switch is subject to regulatory requirements that specify a limited fail-safety level for the safety switch. The required fail-safety level can be achieved through additional safety-related devices on the safety switch. For example, transmitters and receivers, respectively arranged on the actuator and the safety switch, can interact to ensure that the actuator is in a defined locked position relative to the safety switch.

[0004] In addition to monitoring the interlock, the safety switch devices of the above type may also be equipped with a protective lock. The protective lock not only monitors the position of the safety-related moving parts but also locks them in a defined position. Such protective locks, for example, are known according to DE 10 2009 041 101 A1 or WO 2016 / 058718 A1. The protective locks described therein have a protective locking bolt that can move between a released position and a locked position by means of a rotary actuator, wherein the protective locking bolt and the actuator are kinematically connected to each other via a transmission mechanism.

[0005] EP 3 474 304 A1 describes another form of protective locking, showing a safety switch with a small and compact design. The safety switch according to EP 3 474 304 A1 does not have a locking bolt. Instead, a locking unit is provided, in which a locking element in the locked position protrudes into an opening of the locking unit to reduce the size of the locking unit. The front end of the actuator has a cross-sectional area larger than this reduced opening but smaller than the cross-sectional area of ​​a single opening, so that the actuator can be held within the locking unit. The locking element resists actuation force movement, allowing the actuator to pass through the opening, wherein once the actuator is inserted into the locked position, the actuation force causes the locking element to shift back into the locked position and secure the actuator. Additional locking units can be used to lock the locking element so that the locking element can no longer resist actuation force movement.

[0006] The protective lock shown in DE 10 2009 041 101 A1 or WO 2016 / 058718 A1 has the disadvantage that the bolt is always kinematically connected to the corresponding actuator, and therefore the force acting on the bolt is also transmitted to the actuator. On the other hand, the device according to EP 3 474 304 A1 disconnects the locking element from the protective lock, but is limited by a specific actuator shape. Summary of the Invention

[0007] In this context, the objective is to provide a safety switch that allows for protective locking via bolts, featuring a small and compact design and enabling effective, safe, and energy-efficient protective locking.

[0008] According to one aspect of this disclosure, a safety switch is provided, comprising: a movably mounted locking bolt configured to lock an actuator relative to the safety switch in a defined locking position, and a movably mounted locking partition movable between a first position and a second position, wherein the locking partition is configured to secure the movably mounted locking bolt in the second position via a positive fit.

[0009] Therefore, the present invention provides a safety switch having a locking bolt that can be locked via a movable locking partition. Through a form-fit (form closure) in a second position, the locking partition prevents movement of the locking bolt and absorbs the forces acting on it. For example, the forces generated on the locking bolt when attempting to open a safety door against the protective lock can thus be transmitted to the structural components of the safety switch, particularly the housing, instead of to the actuating element of the bolt or the actuator of the locking partition. In particular, the actuator can then be designed for lower loads and operate with less energy, meaning the safety switch can be designed to be smaller, more compact, and at a lower overall cost.

[0010] Since locking is accomplished by bolts, there are many possibilities for the design of the corresponding actuator or the way the actuator can be combined with the safety switch. The shape of the actuator only needs to allow the bolt to engage with it, and the angle at which the actuator approaches the safety switch radially relative to the bolt can be arbitrary. In addition to a smaller and more compact design, this approach also allows for more flexible use of safety switch devices that include both the safety switch and the actuator.

[0011] The advantage of separating the bolts used for protection from the bolt locking structure via the partition is that the two devices only need to be designed for their respective purposes and can therefore be designed to be particularly effective.

[0012] In a preferred improvement, the locking bolt can be installed in a guide body having a recess, through which the locking partition can move within the guide body, and wherein a form fit is formed between the locking partition and the guide body.

[0013] Therefore, the locking plate can be pressed into the guide body of the locking bolt to lock the bolt. The force exerted by the bolt on the locking plate is transmitted through the locking plate to the guide body, and thus to the structural elements of the safety switch. Therefore, the bolt actuator and the locking plate actuator can be disconnected from this force.

[0014] To achieve a form-fitting relationship with the guide body of the locking bolt, a very short partition is sufficient, which only needs to move a short distance from the first position to the second position. This also allows for a simple and compact design of the drive unit for the locking partition.

[0015] In another improvement, the safety switch also includes a transmission element configured to move a locking block laterally, and particularly perpendicularly, to a second position during movement extending along the longitudinal direction of the transmission element.

[0016] The transmission element allows for lateral movement of the partition, which can be substantially parallel to the movement of the locking bolt. Therefore, the safety switch can extend substantially along the longitudinal direction of the locking bolt, enabling a narrower design. The transmission element also allows the actuator of the locking partition to be disconnected from the locking partition. In other words, the transmission element and the locking partition can be arranged such that forces acting on the locking partition are not transmitted to the actuator of the transmission element.

[0017] In another improvement, the transmission element may include a first protrusion that protrudes in a first direction transverse to the longitudinal direction of the transmission element and a second protrusion that protrudes in a second direction opposite to the first direction, and the second protrusion is offset relative to the first protrusion in the longitudinal direction.

[0018] The protrusion allows for a simple, transverse lifting motion of the locking partition relative to the longitudinal direction of the transmission element without the need for additional components. Simultaneously, this type of force reorientation enables a simple disengagement of the force connection.

[0019] In another improvement, the safety switch may also include an actuator configured to move the locking block from a first position to a second position.

[0020] The actuator allows for control of the protective locking of the safety switch. Because the locking baffle described herein requires a short distance to travel for the locking bolts, the actuator for the baffle can be designed to be very simple, small, and energy-efficient.

[0021] In another improvement, the actuator can be an electromechanical actuator, particularly a linear solenoid, configured to perform a first linear motion along a defined direction of motion.

[0022] The actuator can therefore be a simple lifting device, and can be designed to be particularly simple when only a small stroke is applied. This is possible in the current case due to the corresponding design of the locking baffle.

[0023] In another improvement, the locking bolt can be configured to perform a second linear movement along a defined direction of motion.

[0024] With this improvement, the directions of movement of the bolt and the actuator correspond accordingly. Therefore, the safety switch can extend substantially in the longitudinal direction and is thus as narrow as possible.

[0025] In another improvement, the locking bolt and drive can disconnect the force connection.

[0026] This improvement allows for an economical and simple actuator because the actuator does not need to compensate for the locking force acting on the locking bolt, since these forces break the connection via the form fit.

[0027] In another improvement, the safety switch may include an actuator having an actuating force that biases the locking bolt into a pre-centered position.

[0028] According to this improvement, the safety switch has a pre-centering feature. Pre-centering means that the actuator is held in a position suitable for locking even before it is locked. Pre-centering allows the locking bolt itself to be held in the locked position without needing to move again to achieve actual locking. For final locking, it is simply necessary to prevent the locking bolt from moving against the actuating force.

[0029] In another improvement, the safety switch may also include an additional unlocking device for moving the locking block from a first position to a second position.

[0030] The additional unlocking device can be used as an auxiliary unlocking device and can also enable manual unlocking. It is also conceivable to upgrade the auxiliary release to an emergency release. The additional unlocking device can also be configured to move only the locking plate. Therefore, auxiliary or emergency unlocking can be achieved in a simple manner.

[0031] In another improvement, the safety switch may also include a reader configured to read a signal from the corresponding transponder of the actuator when the actuator is in a defined locked position.

[0032] The position of the actuator can be easily confirmed via a transponder housed within the actuator. The transponder / reader combination can serve as an additional safety device to ensure compliance with regulatory requirements regarding safety switches. Because the actuator can be flexibly configured according to embodiments of the invention, the transponder / reader unit combination can also be designed variably.

[0033] In another improvement, the safety switch may also include a receiving portion into which an actuator can be inserted to present a defined locked position, wherein the receiving portion has an opening angle of 180° into which the actuator can be inserted.

[0034] By allowing the actuator to be fed to the safety switch at a 180° angle, the safety switch device can be designed flexibly and the safety switch can be arranged in an orientation different from that of the actuator.

[0035] It should be understood that, without departing from the scope of the invention, the above features and the features described below can be used not only in the combinations indicated in each example, but also in other combinations or individually. Attached Figure Description

[0036] Embodiments of the present invention are shown in the accompanying drawings and described in more detail in the following description.

[0037] Figure 1A perspective view of an embodiment of the safety switch device is shown.

[0038] Figure 2 It shows crossing according to Figure 1 A cross-sectional view of the safety switch in the embodiment.

[0039] Figure 3 It shows crossing according to Figure 1 Another cross-sectional view of an embodiment of the safety switch device. Detailed Implementation

[0040] Figure 1 A perspective view of an embodiment of the safety switch device is shown. The safety switch device is indicated herein by reference numeral 100 and essentially comprises two movable and interacting components, namely, the safety switch 10 and the actuator 12.

[0041] The actuator 12 includes a mounting portion 14 and an actuator portion 16. The actuator 12 can be connected via the mounting portion 14 to a safety-related movable component, such as a safety door, and the actuator portion 16 can be operatively connected to the safety switch 10 based on the position of the safety-related movable component.

[0042] The safety switch 10 includes a housing having a base body 18, the housing being fastened to a device, such as a door frame, that is fixed relative to a safety-related movable part, and the housing having a receiving portion 20 into which the actuator portion 16 of the actuator 12 can be inserted to establish an operative connection.

[0043] The operational connection may include interlock monitoring and protective locking. The status of the operational connection can be visualized via a display element 22 on the base body 18. Furthermore, this status can be reported to other devices, particularly a safety controller, via interface 24 to trigger a response based on the status detected by the safety switch 10. For example, if the actuator portion 16 is not correctly detected in the receiving section 20, the safety controller can halt the operation of the technical installation.

[0044] exist Figure 1 In the embodiment shown, the safety switch 10 also includes an auxiliary unlocking device 26 that enables auxiliary or emergency unlocking of the actuator 12. As will be described in more detail below, the auxiliary unlocking device 26 can be used to manually release the protective lock of the safety switch 10.

[0045] Reference Figure 2 The following section provides a more detailed description of the example structure of safety switch 10. Figure 2 It shows Figure 1 A cross-sectional view of the safety switch 10 extending longitudinally through the base body 18. The same reference numerals denote... Figure 1 The same part.

[0046] If you have already referred Figure 1 As shown, in Figure 2 In this configuration, actuator 12 is in a defined locked position relative to safety switch 10, wherein actuator portion 16 is positioned within the receiving portion 20 of safety switch 10, enabling proper locking of the safety-related movable component relative to the fixed component to which safety switch 10 is attached. For example, as shown herein, the correct positioning of actuator portion 16 within the receiving portion 20 can be determined via transponder 28 in actuator portion 16 and a corresponding reader 29 in safety switch 10. However, it should be noted that safety switch 10 is not limited to this interlock monitoring design, and other methods for determining the position of actuator portion relative to safety switch 10 are conceivable.

[0047] In the defined locked position, the actuator portion 16 can be locked in the receiving portion 20 by the safety switch 10, so that the safety-related movable part can no longer move relative to the fixed part (protective locking). For this purpose, the safety switch 10 has a locking bolt 30 that is movably mounted and can engage the actuator portion 16. For example, the actuator portion 16 may have a recess 32 in the form of a hole as shown herein, or a recess in the form of an engaging recess, in which the locking bolt 30 engages to secure the actuator portion 16. Simple engagement is sufficient for securing, and it is not necessary to engage behind the actuator portion 16.

[0048] Using the locking bolt 30 for securing the actuator portion 16 in the manner described allows it to be fed to the safety switch 10 at any radial angle relative to the locking bolt 30 and secures the actuator portion 16 in place. For example, the receiving portion 20 can be in the form of a slot, as shown herein, having a wide opening angle of 180° for receiving the actuator portion 16. For example, the receiving portion 20 can be formed, for example, by a closed surface 34 extending orthogonally to the longitudinal body axis 36 of the bolt, a stop 38 opposite to the bolt 30, and a crossbar 40 connecting the stop 38 to the base body 18. Alternatively, a two-piece receiving portion 20 can be envisioned, in which the stop 38 is separate from the base body 18. In this case, it is envisioned to feed the actuator portion 16 at a radial angle of 360° relative to the locking bolt 30.

[0049] As shown herein, the locking bolt 30 may be a cylindrical body having a rounded head portion 42 and terminating on a radially projecting flange portion 44 on the side opposite to the head portion 42. The locking bolt 30 may be movably mounted in the guide portion 46 along its longitudinal body axis 36. The locking bolt 30 is movable between a locked position and a released position, in which the locking bolt 30 protrudes into the closed surface 34, and in the released position, the locking bolt 30 releases the actuator portion 16. The flange portion 44 may be arranged in a hollow cylindrical guide body 48, wherein an upper stop portion 50 and a lower stop portion 52 of the guide body 48 define a movement path 54 along which the locking bolt 30 is movable between the two positions.

[0050] A return spring 56 (actuator) biases the locking bolt into a locked position. The flange portion 44 and the guide body 48 may each include a corresponding opposing hole 58 for receiving and supporting the return spring 56. The return spring 56 may be configured to apply a force to the locking bolt 30 sufficient to pre-center the actuator portion 16 without obstructing its movement, making it impossible for the actuator portion to move out of the locked position. Instead, the actuating force of the return spring 56 may be selected to allow a person to pull the pre-centered actuator portion 16 out of the receiving portion 20 using a normal force. This can be further facilitated by rounding the head portion of the locking bolt 30 and / or by correspondingly rounding the recess 32 in the actuator portion 16. As the actuator portion 16 moves in and out, the locking bolt 30, preloaded (biased) in the locked position, thus moves against the actuating force of the return spring 56.

[0051] The safety switch 10 also includes a locking baffle 60, which is arranged to at least secure a movably mounted locking bolt 30 in its locked position. The locking baffle 60 may be a quick-displacement baffle capable of being inserted transversely, and particularly perpendicularly, to the longitudinal body axis 36 of the locking bolt 30 into the movement path 54 of the locking bolt 30. For example, the locking baffle 60 may be able to be inserted into the guide body 48 through a radial recess 62 to present a first position (locked position).

[0052] In the locked position, the locking plate 60 prevents movement of the locking bolt 30 via a form fit. This form fit is formed by the engagement of the locking plate 60 with the flange portion 44 and the stop surface 64 of the guide body 48. The force pressing longitudinally against the locking bolt 30 against the actuating force of the return spring 56 acts normally on the locking surface 66 of the locking plate 60, and the surface opposite to the locking surface 66 abuts against the abutting surface 64 of the guide body 48. The guide body 48, which absorbs the force acting on the locking bolt 30 via the locking plate 60, can be fixedly mounted in the base body 18 and is therefore rigidly connected to the component to which the housing is attached together with the base body 18.

[0053] In the second position (released position), the movement of the locking bolt 30 is released, thereby allowing the locking bolt 30 to move within the guide body 48 along the longitudinal body axis 36. When the locking partition 60 is in the released position, the actuator portion 16 can be pulled out of the receiving portion 20, while pushing the locking bolt 30 against the actuating force of the return spring.

[0054] like Figure 2 As shown, the locking plate 60 can lock the locking bolt 30 in the locked position. In various embodiments, the locking plate 60 can also hold the locking bolt 30 in the released position, i.e., in a position where the locking bolt 30 does not protrude through the closed surface 34. For this purpose, the locking bolt 30 and the locking plate 60 can be arranged such that the locking plate 60 engages the flange portion 44 to retain the locking bolt 30 against the actuating force of the return spring 56. Similarly, the locking plate 60 can cooperate with the guide body 48 to resist the force on the locking bolt 30 caused by the actuating force through a form fit.

[0055] The locking plate 60 is capable of moving laterally, and particularly perpendicularly, to the longitudinal body axis 36 of the locking bolt 30. The driving force for the movement of the locking plate 60 can be provided by an actuator 68, which is coupled to the locking plate 60 by means of a transmission element 70. The transmission element 70 can perform a linear motion driven by the actuator 68 and transmit that motion to the locking plate 60.

[0056] like Figure 2 As shown, the actuator 68 can be a linear solenoid, particularly a bistable linear solenoid, and the actuator 68 can be equipped with a rod 72 for linear motion. Here, the rod 72 terminates at a radially protruding head portion 74, which engages with a receiving portion 76 on the lower portion 78 of the transmission element 70 to transmit the linear motion of the actuator 68 to the transmission element 70.

[0057] The movement of the transmission element 70 can be substantially parallel to the longitudinal body axis 36 of the locking bolt 30. For this movement, the transmission element 70 can be mounted in a guide portion 80 extending parallel to the guide body 48. Furthermore, the transmission element 70 can cause the locking partition 60 to move laterally to the longitudinal body axis 36 of the locking bolt 30, thereby locking the locking bolt 30 as described above.

[0058] The locking partition 60 can be supported so that it can move only along the transverse axis 82, while the force acting on the locking partition 60 transversely to this axis is absorbed by the support. Figure 2 As shown, under appropriate load conditions, the locking bolt 30, locking partition 60, and transmission element 70 can be disconnected from the force connection. The load on the locking partition 60 can be achieved, for example, through the recess 62 in the guide body 48.

[0059] To transmit motion from the transmission element 70 to the locking partition 60, the transmission element 70 may include protrusions 84, 86 extending transversely to the linear direction of motion of the transmission element 70. For example, the protrusions 84, 86 may be in the form of rounded cams and may cooperate with the locking partition 60 such that when the transmission element moves in a lateral direction, the locking partition 60 selectively presents a locked position or a released position. For example, the locking partition 60 may include an opening 88 through which the transmission element 70 extends longitudinally, wherein the protrusions 84, 86 each cause the locking partition 60 to move (deflect) along the extension direction of the protrusion.

[0060] The deflection distance of the locking plate 60, i.e., the distance between the first and second positions, can be very small, for example, less than 5 mm. Furthermore, the locking plate 60 can be freely supported such that the force required to move it from the first to the second position is small. Therefore, a small and very compact actuator 68 may be sufficient to provide effective protective locking. Moreover, since the force acting on the locking bolt 30 against the actuation force of the return spring 56 is not transmitted to the actuator 68, the actuator 68 does not need to be designed to withstand such forces. In general, the small size of the actuator 68 and the simple locking mechanism allow the safety switch 10 to be very small and compact. Furthermore, according to the described configuration, the actuator 68 requires very little energy to provide effective protective locking.

[0061] As shown in this embodiment, the safety switch 10 may have an auxiliary unlocking device 26 that provides additional unlocking options. For example, the safety switch 10 may be manually unlocked via the auxiliary unlocking device 26 using a tool such as a wrench or square wrench.

[0062] In the embodiment shown herein, the auxiliary unlocking device 26 is connected to the transmission element 70 at the lower portion 78 of the transmission element 70, wherein the rotational motion of the auxiliary unlocking device 26 is converted into linear motion of the aforementioned transmission element 70. This linear motion then moves the locking partition 60 from the locked position to the released position in the aforementioned manner.

[0063] Since the actuator 68 only needs to be designed to apply the force to move the locking block, but otherwise disconnects from the locking bolt, the auxiliary release can be directly actuated against the driving force of the actuator 68 in this configuration. Compared to known safety switches, the protective locking via the locking block 60 described herein makes the design of auxiliary and / or emergency release particularly simple because no additional disconnection from the actuator 68 is required. Therefore, the design of the safety switch 10 can be further simplified.

[0064] Electronic equipment 90 may be provided for interlock monitoring via transponder / reader combinations 28, 29, for visualizing the status of safety switch 10 by means of display element 22, and for controlling driver 68.

[0065] Electronic equipment 90, which may include integrated and discrete components, is arranged on a single printed circuit board 92. The printed circuit board 92 extends substantially directly along the upper surface 94 of the housing of the safety switch 10 in the longitudinal direction of the safety switch 10. This positioning has the advantage that all necessary electrical components of the safety switch 10 can be arranged on a single circuit board. The circuit board may include a reader 29, a display element 22, a drive controller 96, and a sensor system 98 for detecting the corresponding operational state of the protection lock.

[0066] The sensor system 98 may be a photoelectric sensor whose light beam is interrupted in response to the position of the transmission element 70.

[0067] Figure 3 A cross-sectional view of the aforementioned safety switch device 100 is shown. The same reference numerals denote the same as previously indicated. Figure 1 and Figure 2 The same part shown.

[0068] Here, the cross-sectional plane is the normal plane to the longitudinal body axis 36 of the locking bolt 30, and the cross-sectional plane passes through the locking partition 60. As in the previous embodiment, the locking partition 60 is in a locked position where movement of the locking bolt 30 is blocked. The locking bolt 30 is mounted in the guide body 48 such that the bolt 30 can move along the longitudinal body axis 36 of the locking bolt 30. The locking partition 60 is movably mounted in the recess 62 of the guide body 48 and can move laterally to the longitudinal axis 36. In this embodiment, the locking partition 60 includes an opening 88 through which the transmission element 70 passes. The transmission element 70 can move parallel to the longitudinal body axis 36. In this respect, protrusions 84 and 86 deflect the locking partition 60 to a locked position or a released position. An additional stop on the guide body 48 prevents the locking partition from being inserted too deeply into the guide body 48.

[0069] It should be noted that the locking plate 60 is not limited to the form shown herein, but other variations regarding how the locking plate 60 can be constructed are conceivable. It is only required that the locking plate 60 can engage with the path of movement of the locking bolt 30, such that the locking bolt 30 is locked in its movement via a form fit. The form fit can be formed by the guide body 48.

[0070] Furthermore, the embodiments shown herein should be understood as exemplary only, and different embodiments are conceivable without departing from the scope of the invention. In principle, the scope of protection of this invention is determined by the appended claims and is not limited to the features described in the specification or shown in the drawings.

Claims

1. A safety switch (10), comprising: A locking bolt (30) is movably mounted, the locking bolt (30) being configured to lock the actuator (12) relative to the safety switch (10) in a defined locking position; A movably mounted locking plate (60) is movable between a first position and a second position, wherein the locking plate (60) is configured to secure the movably mounted locking bolt (30) in the second position via a form fit; and A transmission element (70) is configured to move the locking partition (60) transversely to the longitudinal direction of the transmission element (70) from the first position to the second position during a movement extending along the longitudinal direction of the transmission element (70). The transmission element (70) includes a first protrusion (84) and a second protrusion (86). The first protrusion (84) protrudes in a first direction transverse to the longitudinal direction of the transmission element (70), and the second protrusion (86) protrudes in a second direction opposite to the first direction. The second protrusion (86) is offset relative to the first protrusion (84) in the longitudinal direction of the transmission element (70).

2. The safety switch according to claim 1, wherein, The locking bolt (30), which is movably mounted, is installed in a guide body (48) having a recess (62), the locking partition (60) being movable through the recess (62) in the guide body (48), and wherein the shape fit is formed between the locking partition (60) and the guide body (48).

3. The safety switch according to claim 1 or 2, wherein, The transmission element (70) is configured to move the locking partition (60) from the first position to the second position, perpendicular to the longitudinal direction of the transmission element (70).

4. The safety switch according to any one of claims 1 or 2, further comprising: A driver (68) configured to move the locking partition (60) from the first position to the second position.

5. The safety switch according to claim 4, wherein, The driver (68) is an electromechanical actuator that performs a first linear motion along a defined direction of motion.

6. The safety switch according to claim 5, wherein, The actuator (68) is a solenoid.

7. The safety switch according to claim 5, wherein, The locking bolt (30), which is installed in a movable manner, is configured to perform a second linear movement along the defined direction of movement.

8. The safety switch according to claim 4, wherein, The locking bolt (30) and the driver (68) are disconnected from the force connection and are installed in a movable manner.

9. The safety switch according to any one of claims 1, 2, 5 to 8, further comprising: Actuator element (56) having an actuating force that biases the locking bolt (30) which is movably mounted into a pre-centered position.

10. The safety switch according to any one of claims 5 to 8, further comprising: An auxiliary unlocking device (26) is provided, through which the locking partition (60) can be moved from the first position to the second position.

11. The safety switch according to claim 10, wherein, The auxiliary unlocking device (26) is kinematically coupled to the driver (68), and the locking plate (60) is able to move against the driving force of the driver (68) via the auxiliary unlocking device (26).

12. The safety switch according to any one of claims 1, 2, 5 to 8, further comprising: A reader (29) is configured to read a signal from the corresponding transponder (28) of the actuator (12) when the actuator (12) is in the defined locked position.

13. The safety switch according to any one of claims 1, 2, 5 to 8, 11, further comprising: An evaluation unit is configured to directly or indirectly detect the position of the actuator portion (16) of the actuator (12), the position of the locking bolt (30), and / or the position of the locking partition (60) and to signal the detected position to a controller connected to the safety switch (10).

14. The safety switch according to any one of claims 1, 2, 5 to 7, 11, further comprising: The receiving part (20) is into which the actuator portion (16) of the actuator (12) can be inserted to present the defined locking position, wherein the receiving part (20) has an opening angle of 180° and the actuator portion (16) can be inserted into the receiving part (20) at the opening angle.

15. A safety switch device (100), comprising: The safety switch (10) according to any one of claims 1 to 14; And an actuator (12) that can move relative to the safety switch (10).

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