Electrical connector with pressure sensitive area and pressure sensor - Patents.com

Abstract

The present invention relates to an electrical connector (1) comprising at least one pressure sensitive surface (2) and at least one pressure sensor (4) configured to detect pressure acting on the at least one pressure sensitive surface (2) and to output a signal (3) in response to the detection of pressure on the at least one pressure sensitive surface (2).

Description

[Technical field]

[0001] The present invention relates to electrical connectors. [Background technology]

[0002] Electrical connectors are generally used for the removable connection of electrical elements, which in the mated state allow the transmission of electric current and / or electrical signals. For safety reasons, the correct positioning of the electrical connector and its connecting elements, such as the mating connector or terminal, must be ensured. In particular, unmating under load should be prevented. Such unmating under load can lead to uncontrollable situations, such as sparks, arcing, or even burning. However, in various applications, electrical connectors are vulnerable to manipulations or accidental events that can cause loosening between the connecting elements. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE PRESENT EMBODIMENT It is an object of the present invention to provide an electrical connector having improved reliability. [Means for solving the problem]

[0004] This objective is achieved by providing an electrical connector comprising at least one pressure sensitive surface and at least one pressure sensor configured to detect pressure acting on the pressure sensitive surface and to output a signal in response to detection of pressure on the at least one pressure sensitive surface.

[0005] The above solution has the advantage that a signal representative of the pressure acting on the pressure sensitive surface can be received. This signal can represent the current state of the electrical connector. The signal can therefore be used to determine whether handling or manipulation of the electrical connector is taking place.

[0006] The above solution may be further improved by adding one or more of the following optional features, each of which is advantageous in itself and may be combined independently with any other optional feature.

[0007] It should be understood that the electrical connector can be a data connector, a signal connector, a power connector or even a hybrid connector. In particular, the electrical connector can be a connector without breaking capacity. The above solution is particularly advantageous for such electrical connectors without breaking capacity, since the consequences of operating such connectors under load can be extremely serious. Such consequences can range from loss of functionality of the connector to injury or even death of the operator.

[0008] In a particularly advantageous embodiment, the electrical connector may further comprise an alarm unit configured to receive the signal and be actuated by the signal at a predefined threshold value. The alarm unit may thus alert an operator that the electrical connector has been manipulated. In this way, the operator may check the electrical connector before any unintended disengagement or the like occurs. For example, the alarm unit may be configured to emit an optical and / or acoustic warning signal that may be recognized by the operator. The threshold value may be a predefined value that may be specifically determined for the corresponding application in order to reduce the possibility of false alarms.

[0009] In one embodiment, the alarm unit may be activated when the pressure exceeds a threshold value. In another embodiment, the alarm unit may be activated when the pressure drops below the threshold value. The former embodiment allows for recording of the force acting on the pressure sensitive surface, for example by someone gripping or pressing the electrical connector. The latter embodiment allows for recording of a decrease in pressure acting on the pressure sensitive surface, which may correspond to a decrease in insertion force, etc. In one exemplary embodiment, the alarm unit may be automatically switched on when the threshold value is exceeded and then activated when the pressure drops below the threshold value.

[0010] Preferably, the alarm unit may be integrated into the housing of the electrical connector so that the state of the electrical connector can be directly verified. Alternatively, the alarm unit may be located remotely from the housing. The electrical connector may comprise a cable for transmitting a signal from the pressure sensor to the alarm unit. The alarm unit may for example be a computer connected to the pressure sensor. In this case, the alarm unit may send and log system notifications and show them on a display.

[0011] To prevent danger to personnel, the alarm unit may be configured to interrupt the supply of power through the connector when activated. For example, the alarm unit may comprise a switch that opens upon activation of the alarm unit. It will be understood that any kind of interruption may be envisaged that results in a change in the power supply through the electrical connector. A system may be provided with an emergency shutoff that is controllable by the alarm unit.

[0012] The alarm unit may be activated by a control unit and / or a detection unit, which may be located in another component of the system, such as an electrical device.

[0013] Preferably, the alarm unit has a two-stage alarm. A first alarm is activated at a first threshold to indicate that a force has been applied to the pressure sensitive surface. A second alarm is activated at a second threshold to indicate that the pressure sensitive surface has been moved. The first alarm may be a visual and / or optical alarm signal and the second alarm may be an emergency shutoff. The electrical connector may comprise a power line for powering the alarm unit. Thus, the alarm unit may only be switched on when the electrical connector is powered. Alternatively, the alarm unit may be battery powered, which allows the alarm to be activated even when the electrical connector is not powered by the power line.

[0014] It is particularly advantageous if an evaluation unit is provided for maintenance purposes. The evaluation unit is configured to count the number of times the alarm unit has been activated. From this, it is possible to calculate, for example, the number of mating cycles between the electrical connector and the mating connector. In particular, the number of times the alarm unit has been activated may directly correspond to the number of mating cycles. In an exemplary embodiment, the electrical connector may comprise at least one locking mechanism, which is movable between a release position and a fixed position for fixing the element to the electrical connector, and the at least one pressure-sensitive surface is arranged on the at least one locking mechanism. It will be understood that the element may be a terminal mounted on a housing of the electrical connector and fixed therein by the at least one locking mechanism. Alternatively, the element may be a mating connector that is locked to the electrical connector in a fully mated state. Additionally, at least two locking mechanisms may be provided, one configured to secure the terminal within the housing of the electrical connector and the other configured to secure the mating connector to the electrical connector. Each locking mechanism may include a pressure sensitive surface and a pressure sensor, which allows easy determination of which locking mechanism is being operated.

[0015] Operation of at least one locking mechanism may be detected by a pressure sensor so that it can be determined whether the electrical connector has been tampered with, thereby allowing an operator and / or an alarm unit to intervene.

[0016] The at least one locking mechanism may be a so-called Terminal Position Assurance (TPA) mechanism or Connector Position Assurance (CPA) mechanism. When in the fixed position, the correct position of the terminal or connector is ensured and this position will not change unless the Position Assurance is moved to the released position. However, the application of a force to the pressure sensitive surface that would move the Position Assurance is detected by a pressure sensor so that countermeasures can be taken to prevent serious damage to the electrical connector or its surroundings. The at least one locking mechanism may also be a secondary lock that secures the primary lock in the fixed position.

[0017] Preferably, the at least one locking mechanism comprises an actuation surface adapted for manual interaction, and the pressure-sensitive surface is at least partially arranged on the actuation surface. For example, the at least one locking mechanism may be a locking lever having a handle. The actuation surface is formed on the handle, and pressure against the actuation surface causes pivoting of the locking lever. In this case, the pivoting of the locking lever may be detected via a pressure sensor.

[0018] It will be appreciated that the at least one locking mechanism may be any type of locking mechanism, for example it may be a locking lever, a push-pull locking mechanism, a snap hook locking mechanism, a screw locking mechanism, a bayonet locking mechanism, or a slide locking mechanism.

[0019] When the at least one pressure sensitive surface is disposed on the locking mechanism, disengagement between the electrical connector and the element may be detected indirectly, i.e., by movement of the locking mechanism to an unlocked position. Alternatively or additionally, detection may be performed directly by adapting the at least one pressure sensitive surface to receive pressure from the element.

[0020] For example, at least one pressure-sensitive surface may be disposed at an interface of the electrical connector. When mating with a mating connector, the mating connector directly or indirectly presses against the pressure-sensitive surface, and the pressure sensor senses the pressure. When unmating, a drop in pressure can be detected, and an alarm unit may be activated when the pressure drops below a threshold value.

[0021] In particular, the electrical connector may comprise a mating face facing the mating connector in the mating direction, the pressure sensitive surface forming part of the mating face.

[0022] The at least one pressure sensor may be at least partially mounted directly or indirectly on the pressure-sensitive surface. In order to prevent a sudden drop in pressure acting on the pressure-sensitive surface, an elastically compressible intermediate element may be provided. The elastically compressible intermediate element may in particular be compressible in a direction substantially perpendicular to the at least one pressure-sensitive surface. The intermediate element may in particular be a buffer that provides protection against sudden forces on the at least one pressure-sensitive surface and / or the at least one pressure sensor, so that the pressure does not become so when disengaged, but only a gradual drop occurs.

[0023] In one embodiment, the intermediate element may be at least partially mounted on the at least one pressure sensor, in particular on a sensitive surface of the at least one pressure sensor. In particular, the at least one pressure sensor may be arranged between the at least one pressure sensitive surface and the intermediate element. The at least one pressure sensor may in particular be attached directly to the at least one pressure sensitive area.

[0024] Alternatively, the at least one pressure sensor may be at least partially or completely integrated in the intermediate element. The at least one pressure sensor may in particular be embedded in the intermediate element such that the intermediate element protects the at least one pressure sensor from damage.

[0025] The intermediate element may be adhesively fixed to the at least one pressure sensor. In particular, the at least one pressure sensor may be at least partially overmolded by the intermediate element.

[0026] In a particularly advantageous embodiment, the intermediate element may be a seal or at least a part of a seal. In this embodiment, a compact sealed connection between the electrical connector and the counter connector may be realized. The at least one pressure sensor may be at least partially embedded in the seal. In particular, in the case of a radial seal, the at least one pressure sensor may be placed at least partially or possibly completely under the seal, between the seal and the pressure-sensitive surface.

[0027] Advantageously, the electrical connector may comprise a housing and an expansion module replaceably mounted in the housing, the at least one pressure sensor being arranged in the expansion module. A set may be provided comprising at least two expansion modules, one of the at least two expansion modules comprising at least one pressure sensor and another of the at least two expansion modules not comprising at least one pressure sensor. An expansion module comprising at least one pressure sensor may be particularly advantageous, since it can easily replace an expansion module without a pressure sensor and thus can be used for retrofitting electrical connectors already in use.

[0028] The present invention also relates to a connector arrangement comprising an electrical connector according to any one of the above embodiments and a mating connector. The electrical connector and the mating connector may be movable relative to each other between an unmated state and a fully mated state, and the mating connector and the electrical connector are configured to apply pressure to the pressure-sensitive surface at least in the fully mated state. The pressure may be detected by at least one pressure sensor, which sends a signal indicating that the connector is in a fully mated state. Unmating is detected by the at least one pressure sensor, making it possible to take countermeasures against unmating and to prevent harm to the connector and / or its surrounding environment.

[0029] Preferably, the electrical connector may include a mating interface facing a counter mating surface of the mating connector. The at least one pressure sensor may be disposed at the mating interface and a resiliently compressible intermediate element may be disposed at the counter mating surface. When the intermediate element is pressed against the at least one pressure sensor, the intermediate element is compressed and the pressure acting on the pressure sensor increases progressively until a fully mated state is reached. Because the intermediate element provides relaxation, unmating results in a gradual drop in pressure rather than a sudden drop in pressure without the intermediate element.

[0030] The invention also relates to a system comprising the electrical connector as described above and an electrical device, such as an automation device. The electrical connector may be electrically coupled to the electrical device and adapted to mate with a mating connector. The electrical connector may for example be integrated into the electrical device. For example, the electrical connector may be attached to a housing of the electrical device. Alternatively, the electrical device may be connected to the electrical device via a cable or the like. The electrical device may be a computer to which the electrical connector is connected.

[0031] The system may include a detection unit configured to receive a signal from at least one pressure sensor and be actuated by the signal at a predetermined threshold. The detection unit may be, for example, integrated into an electrical connector. However, in a preferred embodiment, the detection unit may be integrated into an electrical device or may be a separate device, possibly coupled to the pressure sensor. It will be appreciated that upon actuation of the detection unit, the detection unit may send an output signal in response to the actuation.

[0032] Furthermore, the system may comprise a control unit configured to receive the output signal from the detection unit. The control unit may be configured to automatically activate the alarm unit in response to the activation. In particular, the control unit may, upon activation, send an activation signal to the alarm unit. The alarm unit may then be configured to emit a warning signal, for example an acoustic and / or optical signal.

[0033] In one embodiment, at least two of the detection unit, the control unit and the alarm unit, or possibly all units, may be integrated into a common component of the system. Furthermore, at least two of the detection unit, the control unit and the alarm unit may be combined into a single unit. Advantageously, at least the detection unit and the control unit may be coupled to an electrical device, and the alarm unit may be integrated into an electrical connector.

[0034] The threshold value may be a predefined value that can be specifically determined for the corresponding application in order to reduce the risk of false alarms. In one embodiment, the alarm unit may be activated when the pressure exceeds the threshold value. In another embodiment, the alarm unit may be activated when the pressure drops below the threshold value. In the former embodiment, it is possible to record a force acting on the pressure sensitive surface, for example by someone gripping or pressing the electrical connector. In the latter embodiment, it is possible to record a decrease in pressure acting on the pressure sensitive surface, which may correspond to a decrease in insertion force or the like. In one exemplary embodiment, the alarm unit may be automatically switched on when the threshold value is exceeded and then activated when the pressure drops below the threshold value.

[0035] To prevent danger to personnel, the control unit may be configured to interrupt the supply of power through the connector when actuated. For example, the control unit may flip a switch to activate an emergency shutoff. It will be understood that any type of interruption may be envisaged that results in a change in the power supply through the electrical connector. A system may be provided with an emergency shutoff that can be actuated by the control unit.

[0036] Preferably, the system has a two stage alarm: a first alarm that activates at a first threshold and indicates that a force has been applied to the pressure sensitive surface; and a second alarm that activates at a second threshold and indicates that the pressure sensitive surface is being moved. The first alarm may be a visual and / or optical alarm signal and the second alarm may be an emergency shutoff.

[0037] It is particularly advantageous if, for maintenance purposes, an evaluation unit is provided, which is configured to count the number of times the detection unit has been actuated, from which it is possible, for example, to determine the number of mating cycles between the electrical connector and the counter connector. In particular, the number of times the detection unit has been actuated may directly correspond to the number of mating cycles.

[0038] The detection unit may also directly issue a warning signal, functioning as both a detection unit and an alarm unit. In one embodiment, the detection unit may send an output signal directly to the alarm unit. Preferably, the detection unit may be configured to send an output signal to activate the alarm unit at a first predefined threshold and to send an output signal to the control unit to perform an emergency shutoff at a second predefined threshold. In this case, the detection unit functions as a control unit for the alarm unit.

[0039] Additionally, the system may include a mating connector configured to mate with the electrical connector, hi one embodiment, the alarm unit may be integrated into the mating connector.

[0040] In the following, exemplary embodiments are described with reference to the drawings. The illustrated and described embodiments are for illustrative purposes only. The combination of features shown in the embodiments may be modified according to the above description. For example, a feature not shown in the embodiments but described above may be added if the technical effect associated with this feature is beneficial for a particular application, and vice versa (a feature shown as part of an embodiment may be omitted as described above if the technical effect associated with this feature is not required for a particular application).

[0041] In the drawings, elements which correspond to one another in terms of function and / or structure are given the same reference numbers. [Brief description of the drawings]

[0042] [Figure 1] 1 is a schematic perspective view of an electrical connector according to one possible embodiment of the present disclosure; [Diagram 2] FIG. 11 is a schematic perspective view of an electrical connector according to a second possible embodiment of the present disclosure; [Diagram 3] FIG. 11 is a schematic perspective view of an electrical connector according to a third possible embodiment of the present disclosure. [Figure 4]11 is a schematic side view of an electrical connector according to a fourth possible embodiment of the present disclosure. FIG. [Diagram 5] FIG. 13 is a schematic perspective view of an electrical connector according to a fifth possible embodiment of the present disclosure. [Figure 6] FIG. 13 is a schematic perspective view of an electrical connector according to a sixth possible embodiment of the present disclosure. [Figure 7] 2 is a schematic close-up view of a pressure sensitive surface and pressure sensor according to an exemplary embodiment of the present disclosure. [Figure 8] 13 is a schematic close-up view of a pressure-sensitive surface and pressure sensor according to a further exemplary embodiment of the present disclosure. [Figure 9] 1 is a schematic diagram of a connector apparatus according to an exemplary embodiment of the present disclosure in an unmated state; [Figure 10] 1 is a schematic diagram of a connector apparatus according to an exemplary embodiment of the present disclosure in a mated state; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] In general, an electrical connector 1 according to the present disclosure comprises at least one pressure sensitive surface 2 and at least one pressure sensor 4 configured to detect pressure acting on the pressure sensitive surface and output a signal 3 in response to detection of pressure on the at least one pressure sensitive surface 2.

[0044] The pressure sensitive surface 2 is a surface of the electrical connector 1 upon which forces act in certain situations, such as when mating and / or unmating the electrical connector 1 with a mating connector 6. The at least one pressure sensor 4 may be at least partially mounted on the pressure sensitive surface 2, such that the at least one pressure sensor 4 is at least partially supported by the pressure sensitive surface 2. Thus, the pressure sensitive surface 2 provides a counter bearing for the at least one pressure sensor 4.

[0045] The pressure sensor 4 may be, for example, a piezoelectric sensor. However, in a preferred embodiment, the pressure sensor 4 is not a piezoelectric sensor. The pressure sensor 4 may be a foil-like pressure sensor. A foil-like pressure sensor 4 can be easily applied to the pressure-sensitive surface without significantly increasing the dimensions of the electrical connector 1. Preferably, at least one pressure sensor 4 may be flexible so as to be bent, which allows the pressure sensor 4 to be applied to a curved pressure-sensitive surface.

[0046] The electrical connector 1 may be part of a system 100. The system 100 may further include an electrical device 102, such as an automation device. The electrical connector 1 may be electrically coupled to the electrical device 102 and may be configured to mate with a mating connector 6.

[0047] The pressure sensor 4 may be connected to a detection unit 8. The detection unit 8 is configured to receive the output signal 3 and to be actuated by the output signal 3 at a predefined threshold value. Preferably, the pressure sensor 4 may comprise a connection element, such as a wire 10, for directly or indirectly connecting the pressure sensor 4 to the detection unit 8. The detection unit 8 may, for example, be integrated into the housing 12 of the electrical connector 1. Alternatively or additionally, the detection unit 8 may be located remotely from the housing of the electrical connector. For example, the detection unit 8 may be a computer adapted to receive the output signal 3 from the at least one pressure sensor 4, or may be integrated into the electrical device 102.

[0048] Preferably, the detection unit 8 may be configured to be tripped at a predefined threshold. By "tripping" it is understood that the detection unit 8 outputs a signal 13. Said signal 13 may for example be output and stored in a cloud server, which can be accessed and checked for maintenance purposes. Preferably, a control unit 15 is provided, which is configured to receive the signal 13 of the detection unit 8 and then to trip an alarm. The alarm may for example be a warning signal 5 emitted by an alarm unit 17. The alarm unit 17 can thus warn an operator that the electrical connector 1 has been tampered with. To prevent serious damage to the electrical connector 1 and / or its surroundings, the control unit 15 may be configured to interrupt the power supply through the electrical connector 1 after passing a predefined threshold. In one embodiment, the alarm unit 17 may be configured to activate at a first predefined threshold and the control unit 15 may be configured to interrupt the power supply through the electrical connector 1 at a second predefined threshold, the second predefined threshold being different from the first predefined threshold.

[0049] Although the detection unit 8, the control unit 15 and the alarm unit 17 are mentioned as separate units, it will be understood that they can also be part of a single unit 19. The detection unit 8 and / or the control unit 15 may preferably be integrated into the electrical device 102 or may form a separate device connected to the electrical connector 1 and / or the electrical device 102. The alarm unit 17 may be arranged in the electrical connector 1, the mating connector 6 or the electrical device 102. Thus, the alarm unit 17 can be positioned in the most convenient place for each application, allowing good visibility and / or accessibility. In the following, the structure of a first group of possible embodiments of the electrical connector 1 is described with reference to Figs. 1 to 5. The first group of electrical connectors 1 have in common that they each include a specific locking mechanism 14 for securing an element 16 to the electrical connector 1. This makes it possible to detect an operation of the locking mechanism 14, which indirectly indicates, for example, that unmating of the electrical connector 1 has occurred. The element 16 may be, for example, a terminal adapted to be mounted in the housing 12, or it may be a mating connector 6 as shown in FIG.

[0050] 1 shows a connector assembly including a first exemplary embodiment of an electrical connector 1 and a mating connector 6. As shown in FIG. 1, the electrical connector 1 includes a housing 12 on which two locking levers 18 are pivotally mounted relative to the housing 12 from an unlocked position to a fixed position 20. In the fixed position 20, the locking levers 18 engage with the mating connector 6 and lock the mating connector 6 to the electrical connector 1 to prevent unmating of the connectors.

[0051] The locking lever 18 is substantially U-shaped, with two lever arms 22 attached to the housing 12 and a base 24 connecting the two lever arms 22. The base 24 is configured as a handle 26 having an actuation surface 28 to which a force is applied to return the locking lever 18 to the release position. The actuation surface 28 may thus be a pressure sensitive surface 2. The pressure sensor 4 may be a foil at least partially covering the actuation surface 28 such that any force acting on the actuation surface is registered by the pressure sensor 4.

[0052] The alarm unit 17 may be integrated in the electrical connector 1, which may be adapted to emit, for example, an optical and / or acoustic warning signal. Preferably, the alarm unit 17 is activated upon application of a force to the activation unit under load. To this end, the signal 3 is received by the detection unit 8, which outputs a signal 13 to the control unit 15, which in turn activates the alarm unit 17. The activation may be accompanied by an optical and / or acoustic warning signal 5. When plugged in and under load, an emergency shutdown is performed by the control unit 15, interrupting the power supply, if the pressure increases above a predefined threshold.

[0053] As shown in Fig. 1, the alarm unit 17 may be integrated into the electrical connector 1, the mating connector 6 and / or the electrical device 102. Alternatively, the alarm unit 17 may be provided as a separate component connected to at least one of the electrical connector 1, the mating connector 6 and the electrical device 102. Furthermore, Fig. 1 shows a single unit 19 comprising the detection unit 8 and the control unit 15. Optionally, the alarm unit 17 may also be part of the single unit 19, as shown in Fig. 1 by dashed lines.

[0054] 2 shows a second exemplary embodiment of the electrical connector 1. The electrical connector 1 is a so-called push-pull connector 30.

[0055] The electrical connector 1 comprises a handle portion 32 for holding the electrical connector 1. A support collar 34 having a smaller diameter than the handle portion 32 projects axially from the handle portion 32. The support collar 34 provides a support surface 36 for providing support for a radial seal which is attachable to the support collar 34. A connecting portion 38 having a smaller diameter than the support collar 34 projects axially beyond the support collar to a free end of the electrical connector 1. The connecting portion 38 comprises a conductive element for establishing an electrical connection with the mating connector 6.

[0056] When mating with a mating connector (not shown), the connection part and the collar are inserted into the socket of the mating connector. A wall of the mating connector may enter the radial gap between the handle part 32 and the support collar 34. A locking mechanism, such as a locking hook, may be provided in said gap, which locks with the mating connector and blocks relative axial movement between the mating connector and the electrical connector 1. To release the locked connection between the mating connector and the electrical connector, it is necessary to press the operating surface 28 of the handle part, which causes an elastic deformation and disengages the locking mechanism from the mating connector.

[0057] Again, the pressure sensor 4 may be attached to the actuation surface 28. For example, the pressure sensor 4 may be adhesively secured to the actuation surface 28 such that forces applied to the actuation surface 28 can be detected.

[0058] Similar to the embodiment shown in FIG. 1, a detection unit, a control unit and an alarm unit (not shown) can be provided which in a first stage emits an optical and / or acoustic signal and, if a threshold is exceeded, performs an emergency shutdown.

[0059] 3-5, a circular embodiment of the electrical connector 1 is shown. The circular connector includes a locking mechanism in the form of a locking sleeve 40. In the embodiment shown in FIG. 3, the locking sleeve 40 is substantially elliptical with actuating surfaces 28 disposed on opposite diametrical ends. When the actuating surfaces are pressed, the locking sleeve 40 elastically deforms. This deformation may cause the release of a locking mechanism, such as a snap hook.

[0060] In this exemplary embodiment, at least one pressure sensor 4 is provided on at least the working surface 28 .

[0061] 4 includes a locking sleeve 40 for a bayonet locking arrangement. The locking sleeve 40 includes a radially inward projection that is configured to enter a circumferential undercut and block axial movement between the electrical connector 1 and the mating connector 6.

[0062] To unlock the electrical connector 1 from the mating connector 6, the locking sleeve 40 must be twisted circumferentially and then pulled axially away from the mating connector 6. Thus, gripping the locking sleeve 40 and moving it circumferentially and / or axially applies a force to the actuation surface 28 of the locking sleeve 40. This force can be measured by incorporating a pressure sensor into the locking and / or actuation mechanism of the locking sleeve 40.

[0063] 5, a circular connector is provided having a locking sleeve 40 for threaded locking applications. The locking sleeve 40 is capable of rotating about its axis relative to the remainder of the electrical connector 1 and may include internal threads. Again, a pressure sensor may be attached to the locking sleeve 40 such that forces acting on a pressure sensitive surface of the locking sleeve 40 can be detected by the pressure sensor 4.

[0064] Each connector 1 may be equipped with an alarm unit 17 which is activated upon application of a force under load, and optionally a control unit 15 which performs an emergency shutoff when a pressure threshold is exceeded under load.

[0065] As an addition or alternative to providing a pressure sensor in the locking mechanism of the electrical connector 1, the electrical connector 1 may be provided with a pressure sensitive surface 2 against which a force is applied by the mating connector 6 in the mated state. A pressure sensor 4 provided to detect the force acting on such a pressure sensitive surface can thus transmit an output signal that directly correlates with the mated state of the electrical connector 1. Such an electrical connector 1 is shown, for example, in FIG.

[0066] 6 includes a connector housing 12, an axial seal 42 disposed in the connector housing 12, and a number of expansion modules 44 attached to the housing 12. The expansion modules 44 may be interchangeably attached to the housing 12. Thus, a wide variety of expansion modules 44 may be utilized depending on the requirements of the application. The expansion modules 44 form an interface for mating with a mating connector 6.

[0067] In this exemplary embodiment, at least one expansion module 44 may be provided, comprising a pressure-sensitive surface 2 and a pressure sensor 4 adapted to detect a pressure acting on the pressure-sensitive surface 2. Such an expansion module 44 can therefore easily be retrofitted to an electrical connector 1 already in use.

[0068] The pressure sensitive surface 2 may form part of a mating surface 46 of the electrical connector 1. At least one pressure sensor 4 may be attached to the mating surface 46 such that it is clamped between the mating surface 46 and the mating connector 6 in the fully mated state.

[0069] In order to prevent a sudden drop in pressure acting on the pressure-sensitive surface, an elastically compressible intermediate element 48 can be provided as shown in Fig. 7 and Fig. 8. As shown in Fig. 8, the elastically compressible intermediate element 48 may be at least partially or completely placed on the sensing area 49 of the pressure sensor 4. When a force is applied to the elastically compressible element 48, the elastically compressible intermediate element 48 is compressed in a direction perpendicular to the sensing area 49 and / or the pressure-sensitive surface 2. Thus, the elastically compressible intermediate element 48 also functions as a buffer to prevent damage to the pressure-sensitive surface 2 and / or the sensing area 49 due to large forces. Alternatively, at least one pressure sensor 4 may be at least partially integrated into the elastically compressible intermediate element 48. 7, the at least one pressure sensor 4 may be at least partially or completely embedded in the intermediate element 48. The intermediate element 48 is thus disposed between the pressure sensor 4 and the pressure-sensitive surface 2. The pressure sensor 4 may, for example, be overmolded by the intermediate element 48.

[0070] The intermediate element 48 may in particular be at least part of the seal 42. The pressure sensor 4 can therefore be arranged at least partially below the axial seal 42, rather than being provided on the mating surface 46. However, in order not to degrade the sealing performance, it is preferred that the pressure sensor 4 is at least partially or completely integrated into the seal 42. By completely integrated, it is meant that the entire sensing area 49 of the pressure sensor 4 is surrounded by the seal 42. The wiring 10 may protrude from the seal 42 and run to the detection unit 8.

[0071] For maintenance purposes, it is particularly advantageous if an evaluation unit 50 is provided. The evaluation unit 50 may be configured to count the number of times the detection unit 8 has been actuated. This makes it possible to calculate the number of mating cycles of the electrical connector 1. Preferably, the detection unit 8 and / or the evaluation unit 50 may be integrated into the electrical device 102. However, it may also be possible to provide a system with a separate detection unit 8 and / or evaluation unit 50 and the electrical connector 1 connected to the detection unit 8 and / or evaluation unit 50.

[0072] In the exemplary embodiment shown in FIG. 7, the signal 3 is sent to the detection unit 8, which outputs a signal 13, which is received by the control unit 15. The detection unit 8 and the control unit 15 are part of a single unit 19. Thus, in a macroscopic view, the detection and control functions are directly performed by the single unit 19. The evaluation unit 50 may access the detection unit 8 in order to count the number of times the detection unit 8 is activated. Furthermore, the control unit 15 may activate the alarm unit 17, which may be located in the electrical connector 1, the mating connector 6, the electrical device 102, or may be a separate component of the system 100.

[0073] 8 a single unit 19 is shown, which comprises the units, namely the evaluation unit 50, the detection unit 8, the control unit 15 and the alarm unit 17. Said single unit 19 may be integrated in the electric device 102 or provided as a separate component coupled to the pressure sensor.

[0074] The at least one pressure sensor 4 can also be integrated into a radial seal, such as the seal for mounting on the support collar 34 in the embodiment of Figure 2. This embodiment also allows the at least one pressure sensor 4 to be located completely below the radial seal, i.e. between the support surface 36 and the radial seal, without compromising the sealing performance.

[0075] 9 and 10 show an exemplary embodiment of a connector apparatus 52. The connector apparatus 52 includes an electrical connector 1 and a mating connector 6. The electrical connector 1 and the mating connector 6 are movable relative to one another between an unmated state 54 (see FIG. 9) and a fully mated state 56 (see FIG. 10).

[0076] The electrical connector 1 comprises a mating face 46 in which the at least one pressure sensor 4 is located. The mating face 46 preferably comprises a recess, whereby the at least one pressure sensor 4 can be arranged, with a sensing area 49 of the at least one pressure sensor 4 being arranged substantially flush with the remaining part of the mating face 46. The counter connector 6 may comprise a counter face 58 facing the mating face 46. An elastically compressible intermediate element 48 may protrude from said counter face 58, whereby said intermediate element 48 is compressed between the counter face 58 and the sensing area 49, at least in the fully mated state. The intermediate element 48 thus exerts a force on the at least one pressure-sensitive surface 2 in its compressed state 60.

[0077] In the embodiment shown in figures 9 and 10, the signal 3 is sent from the pressure sensor 4 to a detection unit 8 which, when activated, sends the signal 3 to a control unit 15. The control unit may activate an alarm unit 17, which may be integrated in the electrical connector 1, at a first predefined threshold, which emits a warning signal 5. The warning signal 5 may be one which changes upon activation. For example, an LED may be provided which lights up when a connection is established and changes its colour and / or switches off upon activation.

[0078] In the embodiment shown in Figures 6-10, the fully mated condition 56 is indicated by high pressure. Thus, the alarm unit 17 may be activated when a pressure drop is registered and an emergency shutoff may be performed when the pressure drops below a predetermined pressure threshold. [Explanation of symbols]

[0079] 1 Electrical Connector 2 Pressure sensitive surface 3 signals 4 Pressure Sensor 5. Warning Signs 6 Mating Connector 8 Detection Unit 10 Wiring 12. Housing 13 Signal 14 Locking mechanism 15 Control Unit 16 Elements 17 Alarm Unit 18 Lock lever 19 Single Unit 20 Fixed position 22 Lever arm 24 Base 26 Handle 28 Working Surface 30 Push-Pull Connector 32 Handle section 34 Support collar 36 Support surface 38 Connection 40 Lock Sleeve 42 Seal 44 Expansion Module 46 Mating surface 48 Intermediate Elements 49 Sensing area 50 evaluation units 52 Connector device 54 Unmated state 56 Fully mated state 58 Opposite Surface 60 Compressed 100 Systems 102 Electrical Devices

Claims

1. An electrical connector (1), The electrical connector (1) comprises: at least one pressure-sensitive surface (2), at least one pressure sensor (4) configured to detect a pressure acting on said at least one pressure sensitive surface (2) and to output a signal (3) in response to said detection of a pressure acting on said at least one pressure sensitive surface (2); Equipped with Electrical connector (1).

2. The electrical connector (1) includes at least one locking mechanism (14) movable between a release position and a locking position (20) for locking an element (16) to the electrical connector (1); The at least one pressure-sensitive surface (2) is disposed on the at least one locking mechanism (14). An electrical connector (1) according to claim 1.

3. The at least one locking mechanism (14) includes an actuation surface (28); said actuation surface (28) being adapted for manual interaction; said at least one pressure-sensitive surface (2) being at least partially arranged on or formed by said working surface (28); An electrical connector (1) according to claim 2.

4. The electrical connector (1) comprises at least one elastically compressible intermediate element (48), the at least one intermediate element (48) is configured to at least partially press against the at least one pressure-sensitive surface (2) at least in a compressed state (60); An electrical connector (1) according to any one of claims 1 to 3.

5. the at least one pressure sensor (4) is at least partially embedded in the at least one elastically compressible intermediate element (48); An electrical connector (1) according to claim 4.

6. the at least one elastically compressible intermediate element (48) is at least partially mounted on the at least one pressure sensor (4), An electrical connector (1) according to claim 4 or 5.

7. the at least one elastically compressible intermediate element (48) being a seal (42) or a part of a seal (42); An electrical connector (1) according to any one of claims 4 to 6.

8. The electrical connector (1) comprises a housing (12) and an expansion module (44) replaceably attached to the housing (12); The at least one pressure sensor (4) is disposed in the expansion module (44). An electrical connector (1) according to any one of the preceding claims.

9. The electrical connector (1) has a mating surface (46) facing the mating connector (6) in a mating direction; The pressure-sensitive surface (2) forms at least a part of the mating surface (46). An electrical connector (1) according to any one of the preceding claims.

10. - an electrical connector (1) according to any one of claims 1 to 9; - With the mating connector (6) A connector device (52) comprising: The electrical connector (1) and the mating connector (6) are movable between an unmated state (54) and a fully mated state (56); The electrical connector (1) and the mating connector (6) are configured to apply a force to the pressure-sensitive surface (2) at least in the fully mated state (56). A connector device (52).

11. The mating connector (6) comprises an elastically compressible intermediate element (48), 11. The connector device (52) of claim 10, wherein the resiliently compressible intermediate element (48) is configured to press directly or indirectly against the pressure-sensitive surface (2) in a compressed state (60).

12. an electrical device (102), an electrical connector (1) according to any one of claims 1 to 9 for mating with a mating connector (6); A system (100) comprising: The electrical connector (1) is electrically coupled to the electrical device (102); The system (100) further comprises a detection unit (8), The detection unit (8) is configured to receive the signal (3) and to be triggered by the signal (3) at a predetermined threshold.

13. A control unit (15) is provided, The detection unit (8) is configured to send an output signal (13) to the control unit (15); the control unit (15) being configured to interrupt the supply of electrical power via the electrical connector (1) when actuated by the output signal (13); The system of claim 12.

14. the control unit (15) is configured to activate the alarm unit (17) such that the alarm unit (17) emits an optical and / or acoustic warning signal (5) at a first predetermined threshold value; the control unit (15) is configured to interrupt the supply of electrical power via the electrical connector (1) at a second predetermined threshold value; the first predetermined threshold is different from the second predetermined threshold; The system (100) of claim 13.

15. An evaluation unit (50) is provided, The evaluation unit (50) is configured to count the number of times the detection unit (8) is activated. The system (100) according to any one of claims 12 to 14.

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