CN111811558A - Sensor device, base part and conductive track-sensor assembly - Google Patents
Sensor device, base part and conductive track-sensor assembly Download PDFInfo
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- CN111811558A CN111811558A CN202010278130.7A CN202010278130A CN111811558A CN 111811558 A CN111811558 A CN 111811558A CN 202010278130 A CN202010278130 A CN 202010278130A CN 111811558 A CN111811558 A CN 111811558A
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- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 230000036316 preload Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
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Abstract
The invention relates to a sensor device, a base part and a conductive track-sensor assembly. The sensor device for receiving the conductive track has: a base member with a receiving face and a first securing means, the receiving face forming a section of a channel to receive a section of an electrically conductive track, the channel having a base extending along a channel plane; a planar circuit board having a first contact surface, a second contact surface and a second fastening element, the first and second contact surfaces running parallel to one another; and the sensor is connected with the circuit board on the side surface of the second attaching surface, the first fixing device and the second fixing device can be connected with each other, when the first fixing device and the second fixing device are connected with each other, the sensor equipment is in a connection state, in the connection state, the first attaching surface faces the channel, the second attaching surface faces away from the channel, the plane of the channel is parallel to the trend of the first attaching surface, the connection force perpendicular to the plane of the channel acts between the first fixing device and the second fixing device, and the connection force is larger than the preset minimum connection force.
Description
Technical Field
The invention relates to a sensor device for receiving a conductive track, a base part for a sensor device and a conductive track sensor assembly with a sensor device.
Background
Sensor devices with sensors are known from the prior art.
The current intensity of the current in the conductive tracks is measured, for example, using a sensor device. In order to ensure as high a measurement accuracy as possible, the sensors of the sensor device must be positioned as accurately as possible relative to the corresponding conductive tracks.
If the current in the conductive tracks of the current converter is measured with a sensor device in an automotive environment, the sensor device and the conductive tracks may be exposed to high vibration loads, whereby large forces may act on the sensor device and the conductive tracks. These large forces may result in that the position of the sensor device and the position of the conductive track may vary with respect to each other. This is especially the case when the conductive tracks do not extend within a circuit board connected to the sensor of the sensor device.
Disclosure of Invention
It is therefore an object of the present invention to provide a sensor device for receiving conductive tracks, in which the sensors of the sensor device can be positioned as precisely as possible relative to the corresponding conductive tracks and such precise positioning can be ensured even under high vibration loads.
According to a first aspect of the invention, the object is achieved by a sensor device having the features of patent claim 1. The sensor device is formed for receiving a conductive track. The sensor device has a base part with a receiving surface and a first fixing means. The receiving face constitutes at least a section of the channel for receiving a section of the electrically conductive track. The channel has a bottom that extends along a channel plane. The sensor device has a planar circuit board. The circuit board has a first contact surface and a second fixing device. The first contact surface and the second contact surface run parallel to each other. The sensor device has a sensor. The sensor is connected to the circuit board on the side of the second contact surface. The first and second fastening means can be connected to each other. When the first and second fastening means are connected to each other, the sensor device is in a connected state. In the connected state, the first contact surface faces the passage and the second contact surface faces away from the passage. In addition, in the connected state, the channel plane runs parallel to the first contact surface, and a connecting force perpendicular to the channel plane acts between the first fastening means and the second fastening means. The joining force is greater than a predetermined minimum joining force.
The base member has a receiving face which constitutes at least a section of the channel for receiving a section of the electrically conductive track. The electrically conductive track can at least partially abut against the receiving surface and thus be held by the receiving surface. The receiving surface of the base part thus enables an exact positioning of the electrically conductive track relative to the base part. The exact positioning of the electrically conductive track relative to the base part can be achieved in particular by a form-fitting abutment of the electrically conductive track on the receiving surface.
The sensor is connected with the circuit board. The sensor is connected to the circuit board, in particular mechanically and electrically. In the case of a sensor connected to a circuit board, precise positioning of the sensor relative to the circuit board can be ensured.
In the connected state, the first and second fastening means are connected to each other. The connection of the first fixing means with the second fixing means ensures that the base part and the circuit board are fixed to each other in the connected state.
In the connected state, the second contact surface faces away from the channel, so that the sensor connected to the circuit board on the side of the second contact surface is arranged on the side of the circuit board facing away from the channel. The first contact surface of the circuit board runs parallel to the second contact surface, so that the sensor is accurately positioned relative to the first contact surface of the circuit board.
In the connected state, the channel plane runs parallel to the first contact surface, so that the base extending along the channel plane extends parallel to the first contact surface. When the section of the conductive track is received by the channel in the connected state, a precise positioning of the section of the conductive track with respect to the channel plane and thus also with respect to the sensor is ensured.
In the connected state, a connecting force perpendicular to the channel plane acts between the first and second fastening means. The connection force ensures the connection state of the sensor device. The joining force is greater than a predetermined minimum joining force. The predetermined minimum connecting force ensures that the connecting force acting between the first fastening means and the second fastening means is sufficiently high, so that the connection state is ensured even under high vibration loads.
In summary, it was found that a sensor device for receiving conductive tracks is provided, wherein the sensors of the sensor device can be positioned precisely relative to the corresponding conductive tracks and such precise positioning can be ensured even under high vibration loads.
The electrically conductive track may be an electrically conductive track of a current transformer. The conductive tracks may be electrically coupled with other components of the current converter. The current converter may be a current converter of power electronics of a motor vehicle. The current converter is preferably an ac inverter or an ac converter. The current converter may also be referred to as an inverter or a drive converter. The current converter may also be a dc voltage converter or a rectifier.
The base part can have plastic and/or be at least partially made of plastic. The plastic can have a low density, so that the base part can have a particularly low weight. The base part can be an injection-molded part, in particular a plastic injection-molded part, so that the base part can be produced inexpensively in different shapes and with different surface structures.
The base part is preferably connected to the current transformer only via the electrically conductive tracks or (when a plurality of electrically conductive tracks can be received by the base part) via these electrically conductive tracks as the only mechanically rigid connection. In addition, the base member may be connected to the current transformer by wires, which may provide a non-rigid connection. A mechanical decoupling can thereby be provided between the base part and the current transformer in such a way that the base part can vibrate mechanically together with the conductive track, so that the base part can maintain its relative position with respect to the conductive track even under high vibration loads.
The channel has a bottom that extends along a channel plane. The base can be formed at least partially by the receiving surface. When the base is formed by a receiving surface, a form fit perpendicular to the plane of the channel can be provided between the section of the conductive track and the receiving surface. The channel may have two walls extending away from the base and perpendicular to the plane of the channel such that the conductive track may be received between the walls. One or both of the walls may be formed by receiving surfaces. When one of the two walls is formed by a receiving face, a form fit in a direction parallel to the plane of the channel can be provided between the section of the electrically conductive track and the receiving face. When both of these two walls are formed by receiving surfaces, a form fit in two opposite directions parallel to the channel plane can be provided between the section of the electrically conductive track and the receiving surface.
The circuit board is flat. The flatness of the circuit board enables sections to be produced which extend uniformly in a planar manner on the side of the first contact surface and on the side of the second contact surface of the circuit board. The sensor can be arranged, for example, on a uniformly planar section of the side of the second contact surface of the printed circuit board.
The sensor may be a current sensor for measuring the amperage of the current in the conductive tracks due to the density of the magnetic current caused by the passing current. The sensor may be an AMR sensor, in particular an AMR current sensor. AMR sensors involve anisotropic magnetoresistive effects. AMR sensors enable particularly accurate, fast and potential-free measurements.
The first and second fastening means can be connected to each other and to each other in the connected state of the sensor device. The first and second fastening means can be releasably connected to each other. The releasable connection of the first and second fastening means enables a reuse of the sensor device. The first and second fastening means can be connected to one another in a non-releasable manner. The non-releasable connection prevents an unintentional release of the first and second fastening means during operation.
The predetermined minimum preload force is for example 1N or 2N or 5N or 10N. The preload force may also be less than a predetermined maximum preload force. The maximum preload force is for example 100N or 50N or 10N.
In one embodiment, the first fastening means has a recess with an internal thread, wherein the second fastening means has a recess and a section of the second contact surface of the circuit board, wherein in the connected state a screw is screwed into the internal thread, is arranged in the recess of the second fastening means and contacts the section of the second contact surface of the circuit board, such that a clamping force acts between the screw and the section of the second contact surface, wherein the clamping force is at least part of the connecting force.
If the first fastening means has a recess with an internal thread and the second fastening means has a recess and a section of the second contact surface of the circuit board, a screw can be introduced into the recess of the second fastening means and screwed into the internal thread. A releasable connection between the first and second fixing means can be provided by means of a screw. The clamping force can be adjusted by selecting a certain tightening torque when screwing the screw into the internal thread. The clamping force can be adjusted by adjusting the clamping force, in particular such that the clamping force is greater than a predetermined minimum clamping force.
Each of the recesses mentioned in connection with the present invention may be a bore hole and/or an elongated hole. The bore can be manufactured quickly and simply. The slot enables an adjustable connection with which tolerances can be compensated.
In one embodiment, the first fastening means has a bolt section and a head connected to the bolt section, the head having an abutment surface, wherein the second fastening means has a recess and a section of the second abutment surface of the circuit board, wherein in the connected state the bolt section is arranged in the recess of the second fastening means and the abutment surface of the head and the section of the second abutment surface of the circuit board abut against one another in such a way that a clamping force acts between the abutment surface of the head and the section of the second abutment surface of the circuit board, wherein the clamping force is at least part of the connecting force.
When the first fastening means has a screw section and a head connected to the screw section with an abutment surface and the second fastening means has a recess and a section of the second abutment surface of the circuit board, a non-releasable connection can be provided between the first fastening means and the second fastening means. Furthermore, when the first fastening means has a screw section and a head with an abutment surface connected to the screw section and the second fastening means has a recess and a section of the second abutment surface of the circuit board, the first fastening means can have a screw with a distal head section before connecting the first fastening means to the second fastening means. A bolt with a distal head section may also be referred to as a pin. In order to connect the first and second fastening means to one another, the first and second fastening means can be moved relative to one another in such a way that the screw is introduced into the recess. The first and second fastening means can then be connected to one another by plastically deforming the distal head section in such a way that the head of the first fastening means is formed by the distal head section, so that the bolt section of the first fastening means is arranged in the recess and the head abuts the abutment face of the second fastening means. The plastic deformation of the distal head section, at which the head is formed by the distal head section, may also be referred to as heat staking (Hei β vertemmen).
In one embodiment, the first fastening means has a latching lug with an abutment face and a spring element with an abutment face, wherein the spring element can be brought from an unloaded state into an elastically preloaded state, wherein the second fastening means has a section of the first abutment face of the circuit board and a section of the second abutment face of the circuit board, wherein in the connected state the abutment face of the spring element abuts the section of the first abutment face, the abutment face of the latching lug abuts the section of the second abutment face, and the spring element is in the preloaded state such that a clamping force acts between the abutment face of the spring element and the section of the first abutment face and between the abutment face of the latching lug and the section of the second abutment face, wherein the clamping force is at least a portion of the connecting force.
A releasable connection between the first and second fastening means can be provided if the first fastening means has a latching projection with an abutment surface and a spring element with an abutment surface and the second fastening means has a section of the first abutment surface of the circuit board and a section of the second abutment surface of the circuit board.
The spring element can be brought from an unloaded state into a resiliently preloaded state. In the elastically preloaded state, the entire clamping force or at least a part of the clamping force may be provided by the spring element. The spring element is preferably not deformed in the unloaded state. In the elastically preloaded state, the spring element is preferably linearly elastically deformed. The linear elastic deformation of the spring element in the elastically preloaded state ensures that the spring element can be brought from the unloaded state into the elastically preloaded state and can be returned from the elastically preloaded state back to the unloaded state again. In the unloaded state, the spring element can assume its original shape without the plastic deformation ratio influencing the future deformation behavior of the spring element. In addition, a linear elastic deformation of the spring element in the elastically preloaded state can be achieved, so that the force action starting from the spring element in the elastically preloaded state can be maintained unchanged during long-term use of the sensor device.
When the first fastening means has a latching lug with an abutment face and a spring element with an abutment face and the second fastening means has a section of the first abutment face of the circuit board and a section of the second abutment face of the circuit board, for connecting the first and second fastening means to one another, the first and second fastening periods can be moved relative to one another in such a way that the abutment face of the spring element abuts the first abutment face and the spring element is brought from an unloaded state into an elastically preloaded state until the abutment face of the latching lug abuts the section of the second abutment face.
In one embodiment, the sensor device has an electrically insulating element with a receiving surface and an abutment surface which run parallel to one another, wherein in the connected state the receiving surface of the insulating element forms a section of the passage and the abutment surface of the insulating element abuts against the first abutment surface of the circuit board.
The insulating element is electrically insulating and thus provides electrical insulation between the circuit board and the section of the conductive track when the section of the conductive track is received in the channel. The receiving surface of the insulating element can form a section of the channel, so that a section of the electrically conductive track can bear against the receiving surface of the insulating element. By placing the section of the electrically conductive track against the receiving surface of the insulating element, a form fit can be provided between the section of the electrically conductive track and the receiving surface of the insulating element, in particular perpendicular to the channel plane. The first contact surface of the circuit board can be in contact with the contact surface of the insulating element. In addition, the flat contact of the contact surface of the insulating element on the first contact surface of the circuit board makes it possible to increase the creepage distance of the circuit board on the side of the first contact surface. The insulating element can have a fastening means, which can be connected to the first fastening means and/or the second fastening means. The fastening means of the insulating element can be connected in the connected state, for example, to the first fastening means and/or the second fastening means. The fixing means of the insulating element may be a recess, in particular a bore.
As already explained, the base part can have a first fixing means, the circuit board can have a second fixing means and/or the insulating element can have a fixing means. However, the invention is not correspondingly limited to a single fixation device. Instead, the base part may have a plurality of first fixing means and/or the circuit board may have a plurality of second fixing means and/or the insulating element may have a plurality of fixing means. In one of these cases, the features, technical effects and/or advantages described in connection with the corresponding fixing means are also applicable in at least a similar manner to each of the corresponding plurality of fixing means, and are therefore not described in detail at this point.
In one embodiment, the insulating element has a foil. The foil can be produced with particularly small thickness tolerances, so that the spacing perpendicular to the channel plane between the sensor and the conductive track can be adjusted particularly precisely by the foil.
In one embodiment, the base member integrally forms the insulating element. The integral formation of the insulating element by the base part enables the base part to have the insulating element such that the receiving face of the insulating element can constitute a section of the receiving face of the base part. The receiving surface of the base part can form the entire channel, so that when the section of the electrically conductive track is received by the channel, the section of the electrically conductive track bears circumferentially against the receiving surface of the base part perpendicularly to the direction of extension of the section of the electrically conductive track. Such a circumferential abutment of the sections of the electrically conductive track can be achieved, for example, when the base part is an injection-molded part. The electrically conductive tracks may be overmoulded by the injection-moulded substance as an injection-moulded part at the time of manufacture of the base part, so that the electrically conductive tracks are overmoulded by the base part formed as an injection-moulded part.
In one embodiment, the base part constitutes a protrusion extending into the channel, wherein the protrusion of the base part engages into the recess of the electrically conductive track when the section of the electrically conductive track is arranged in the channel and has a recess. The protrusion of the base part enables a positioning accuracy of the conductive track in the channel when the conductive track has a depression with a shape preferably corresponding to the shape of the protrusion. The projections and the recesses are preferably formed such that a form fit is provided between the projections and the recesses parallel to the channel plane, preferably in the direction of the extension of the section of the electrically conductive track.
In one embodiment, the base part has a first positioning means which extends perpendicularly to the channel plane, wherein the circuit board has a positioning means which extends perpendicularly to the first contact surface of the circuit board, wherein in the connected state the positioning means of the base part extends perpendicularly to the first contact surface of the circuit board and engages into the positioning means of the circuit board. The extension of the positioning means of the base part perpendicular to the plane of the passage and the extension of the positioning means of the circuit board perpendicular to the first contact surface of the circuit board ensure a form fit between the positioning means of the base part and the positioning means of the circuit board in a direction parallel to the plane of the passage when the sensor device is in the connected state and the positioning means of the base part engages into the positioning means of the circuit board. Furthermore, the extension of the positioning means of the base part perpendicular to the plane of the channel and the extension of the positioning means of the circuit board perpendicular to the first contact surface of the circuit board ensure a high positioning accuracy between the base part and the circuit board, so that the sensor connected to the circuit board can be positioned relatively accurately relative to the conductive tracks arranged in the channel. The positioning means of the base part may be formed as positioning pins. The positioning means of the circuit board can be formed as a recess, in particular a bore or an elongated hole.
In one embodiment, the insulating element has positioning means, wherein in the connected state the positioning means of the base part engage into the positioning means of the insulating element. The engagement of the positioning means of the base element into the positioning means of the insulating element ensures a high positioning accuracy between the base part and the insulating element. The positioning means of the insulating element can extend perpendicularly to the contact surface of the insulating element. The extension of the positioning means of the insulating element perpendicularly to the contact surface of the insulating element ensures a form fit between the positioning means of the base part and the positioning means of the insulating element in a direction parallel to the plane of the channel when the sensor device is in the connected state and the positioning means of the base part engages into the positioning means of the insulating element. Furthermore, the extension of the positioning means of the insulating element perpendicular to the contact surface of the insulating element ensures a high positioning accuracy between the base part and the insulating element, so that the insulating element can be positioned relatively accurately with respect to the conductive tracks arranged in the channel. The positioning means of the insulating element can be formed as a recess, in particular a bore or an elongated hole.
In one embodiment, the base part has a second positioning means for coupling with a coupling element of a pre-installation tool on a side of the channel plane facing away from the circuit board, wherein the second positioning means extends perpendicular to the channel plane. When the base part is coupled with the pre-installation tool by means of the second positioning means and the coupling element, the second positioning means of the base part may extend perpendicular to the channel plane and achieve a form fit between the second positioning means and the coupling element in a direction parallel to the channel plane. The form fit between the second positioning means and the coupling element ensures a high positioning accuracy between the base part and the pre-installation tool, so that the first fixing means of the base part and the second fixing means of the circuit board can be connected to each other precisely.
As already explained, the base part can have a first positioning means and a second positioning means, the circuit board can have a positioning means and/or the insulating element can have a positioning means. However, the invention is not correspondingly limited to a single corresponding positioning device. Instead, the base part may have a plurality of first positioning means and/or a plurality of second positioning means and/or the circuit board may have a plurality of positioning means and/or the insulating element may have a plurality of positioning means. In one of these cases, the features, technical effects and/or advantages described in connection with the corresponding positioning device are also applicable to each of the corresponding plurality of positioning devices at least in a similar manner, so that no further details are given in this regard.
The sensor device is described in the present invention as being for receiving a conductive track. However, the invention is not limited to receiving a single conductive track. Rather, the sensor device may be formed for receiving a plurality of conductive tracks. In this case, the base part may have a plurality of receiving faces. Each of these receiving surfaces may form at least a section of a respective one of the channels. Each of these channels may be formed in each case for receiving a corresponding section of one of these electrically conductive tracks and in each case have a base which extends along a corresponding channel plane. In the connected state, the first contact surface can face the channels, the second contact surface can face away from the channels, and the channel plane can run parallel to the first contact surface. The features, technical effects and/or advantages described in connection with the conductive tracks apply at least in a similar way also to each of the corresponding plurality of conductive tracks, so that no further details are given in this connection.
According to a second aspect of the invention, the object stated in the opening paragraph is achieved by a base part having the features stated in patent claim 12. The base part is adapted to be connected to a circuit board so as to constitute the sensor device according to the first aspect. The base member has the receiving face constituting at least the section of the channel with a bottom extending along the channel plane for receiving the section of the electrically conductive track. The base part has the first fixing means which can be connected with the second fixing means of the circuit board.
The features, technical effects and/or advantages described in connection with the sensor device according to the first aspect of the invention are at least in a similar way also applicable to the base part according to the second aspect of the invention and will therefore not be described in detail at this point.
According to a third aspect of the invention, the object stated at the beginning is achieved by a conductive track-sensor assembly having the features of patent claim 13. The conductive track-sensor assembly has a sensor device according to the first aspect and a conductive track. The sensor device is in a connected state. Sections of electrically conductive tracks are arranged in the channels.
The features, technical effects and/or advantages described in connection with the sensor device according to the first aspect of the invention are at least in a similar way also applicable to the conductive track-sensor assembly according to the third aspect of the invention, and will not be described in detail at this point.
In one embodiment, the section of the electrically conductive track protrudes out of the receiving face of the base part perpendicular to the channel plane. The section of the electrically conductive track protruding perpendicularly to the channel plane beyond the receiving surface of the base part makes it possible that, when the first and second fastening means are connected to each other and a connecting force acts between the first and second fastening means perpendicularly to the channel plane, at least a part of the connecting force acts between the section of the electrically conductive track and the bottom of the channel and between the section of the electrically conductive track and the first contact surface of the circuit board. A connecting force acting at least in part between the conductive track and the bottom of the channel and between the conductive track and the first contact surface of the circuit board provides a force fit between the sensor device and the conductive track. In the case of a sensor device having an insulating element, it can be achieved that a section of the electrically conductive track projects perpendicularly to the channel plane beyond the receiving surface of the base part, and that, when the first and second fastening means are connected to one another and a connecting force acts perpendicularly to the channel plane between the first and second fastening means, at least a part of the connecting force acts both between the electrically conductive track and the receiving surface of the insulating element and between the contact surface of the insulating element and the first contact surface of the circuit board. A force fit may be provided between the sensor device and the conductive track when at least a portion of the connecting force acts on the section of the conductive track. Such a force fit is particularly suitable for ensuring a precise positioning of the sensor relative to the section of the conductive track even under high vibration loads. The electrically conductive tracks can be received in the channels with a form fit and a force fit. The conductive track-sensor assembly preferably has no further connection between the sensor device and the conductive track.
In one embodiment, a gap can be arranged between the base part and a section of the first contact surface of the circuit board in the connected state. By arranging a gap between the base part and the section of the first contact surface of the circuit board, the connecting force between the first and second fastening means can be precisely adjusted. In particular in the case of sections of the electrically conductive track which project perpendicularly to the channel plane beyond the receiving surface of the base part, the portion of the connecting force which acts on the sections of the electrically conductive track can be adjusted at least precisely by means of the gap. By precisely adjusting the portion of the connecting force acting on the section of the conductive track, the force-fitting reception of the section of the conductive track in the channel can be precisely adjusted, so that a precise positioning of the sensor relative to the section of the conductive track can be ensured even under high vibration loads.
In one embodiment, the section of the electrically conductive track has a recess, wherein the protrusion of the base member engages into the recess of the electrically conductive track. The recess of the section of the conductive track and the protrusion of the base part enable a high positioning accuracy of the conductive track in the channel. The projections and the recesses are preferably formed such that a form fit is provided between the projections and the recesses parallel to the channel plane, preferably in the direction of the extension of the section of the electrically conductive track.
The conductive track-sensor assembly may be formed as a pre-mounted component set. The formation of the conductive track-sensor assembly as a pre-mounted assembly may enable calibration of the conductive track-sensor assembly prior to mounting in the remaining current converters. Calibration at different temperatures before installation can be achieved in particular by forming the conductive track-sensor assembly as a pre-mounted set of components. Forming the conductive track-sensor assembly as a pre-mounted component set can therefore provide a reduction in cycle time on the final mounting line.
Further features, advantages and possibilities of application of the invention result from the following description of embodiments and the figures. All described and/or illustrated features form the subject matter of the invention both by themselves and in any combination, independently of their relationship in the individual claims or in the claims cited therein. Further, in the drawings, the same reference numerals denote the same or similar objects.
Drawings
Fig. 1 shows a schematic perspective view of a first embodiment of the inventive conductive track sensor arrangement with a sensor device having a base part.
Fig. 2 shows a schematic exploded view of a first embodiment of the inventive conductive track sensor assembly from above in fig. 1.
Fig. 3 shows a schematic exploded view of a first embodiment of the inventive conductive track-sensor assembly in fig. 1 from below.
Fig. 4 shows a schematic perspective view in partial section (left side) and a schematic sectional view in section (right side) of a second embodiment of the inventive conductive track sensor assembly with a sensor device with a base part.
Fig. 5 shows a schematic perspective view of a third embodiment of the inventive conductive track sensor arrangement with a sensor device having a base part.
Fig. 6 shows a schematic perspective view of a cross section of a third embodiment of the inventive conductive track-sensor assembly in fig. 5.
Detailed Description
Fig. 1 shows a schematic perspective view of a first embodiment of a conductive track sensor arrangement 1 according to the invention. The conductive track-sensor assembly 1 has a sensor device 3 and a conductive track 5 (which may be referred to as a first conductive track 5) and a second conductive track 7. In fig. 1, the sensor device 3 is in a connected state. A section of the first conductive track 5 is arranged in a channel (which may be referred to as a first channel). A section of the second electrically conductive track 7 is arranged in the second channel. The sensor device 3 receives a first conductive track 5 and a second conductive track 7 such that the first conductive track 5 and the second conductive track 7 are electrically insulated from each other.
The sensor device 3 has a base part 9, an electrically insulating element 11, a planar circuit board 13, a sensor 15, a plug connector 17 and screws 19.
The base part 9 has a receiving face (which may be referred to as a first receiving face) and a second receiving face. The first receiving face constitutes a section of a first channel for receiving a section of a first electrically conductive track 5. The second receiving face constitutes a section of a second channel for receiving a section of a second electrically conductive track 7. The first channel has a bottom, which may be referred to as a first bottom, and extends along a channel plane, which may be referred to as a first channel plane. The second channel has a second bottom extending along a second channel plane. The first channel plane and the second channel plane run in the same plane. The first and second channels run parallel to each other.
The base part 9 has two first positioning means 21. The first positioning means 21 each extend perpendicularly to the first channel plane. Each positioning means 21 is formed as a positioning pin. In addition, the base part 9 has a cable retaining region 23 with a bottom region 25 and legs 27 extending away from the bottom region 25, between which legs one or more cables can be guided.
The plug connector 17 is part of a plug connection for further conducting a sensor signal which can be provided by the sensor 15. The plug connector 17 is connected to the circuit board 13 in addition to the sensor 15. The screw 19 ensures the connected state of the sensor device 3 shown in fig. 1.
Fig. 2 shows a schematic exploded view of a first embodiment of the inventive conductive track sensor assembly 1 from above in fig. 1. Four first fixing means 29 of the base part 9 are shown. Each of these first fixing means 29 of the base part 9 has a recess with an internal thread.
The base part 9 constitutes two protrusions 31, of which a first protrusion 31 extends into the first channel and a second protrusion 31 extends into the second channel. The section of the first conductive track 5 has a recess 33 and the section of the second conductive track 7 has a recess 33. The first protrusion 31 engages into the recess 33 of the first conductive track 5 and the second protrusion 31 engages into the recess 33 of the second conductive track 7.
A section of the first electrically conductive track 5 projects perpendicularly to the first channel plane beyond the first receiving face of the base part 9. A section of the second electrically conductive track 7 projects perpendicularly to the second channel plane beyond the second receiving face of the base part 9.
The insulating element 11 is a foil, which may also be referred to as insulating foil. Fig. 2 shows the contact surface 35 of the insulating element 11. The insulating element 11 has two positioning means 37 formed as recesses and four fixing means 38 formed as recesses. One of the two positioning means 37 is formed as a bore hole. The other of the two positioning means 37 is formed as an elongated hole which is open on one side.
A second contact surface 39 of the printed circuit board 13 is shown. The sensor 15 is connected to the printed circuit board 13 on the side of the second contact surface 39. The plug connector 17 is likewise connected to the circuit board 13 on the side of the second contact surface 39. The circuit board 13 has four second fixing devices 41. Each of the second fastening means 41 has a recess and a section of the second contact surface 39 of the circuit board 13. The circuit board 13 furthermore has two positioning means 43. Each of the two positioning means 43 is formed as a bore.
Fig. 3 shows a schematic exploded view of a first embodiment of the inventive conductive track sensor arrangement 1 from below in fig. 1. The base part 9 has two second positioning means 45 which are formed for coupling with the coupling elements of the preassembly tool. Each of the two second positioning means 45 is arranged on the side of the first channel plane facing away from the circuit board 13 and extends perpendicular to the channel plane. Each of the two second positioning means 45 is formed as a recess.
Fig. 3 shows the receiving surface 47 of the insulating element 11. The receiving surface 47 runs parallel to the contact surface 35 (see fig. 2). Fig. 3 also shows a first contact surface 49 of the printed circuit board 13. The first contact surface 49 runs parallel to the second contact surface 39 (see fig. 2).
Each of these first fixing means 29 of the base part 9 can be connected with a corresponding one of the second fixing means 41 of the circuit board 13. As already mentioned, the sensor device 3 is in the connected state in fig. 1. In the connected state, each of these first fixing means 29 is connected with a corresponding one of the second fixing means 41. In the connected state, each of the four screws 19 is screwed into a corresponding internal thread. In addition, in the connected state, each of these four screws 19 is arranged in a corresponding recess of the fixing means 38 of the insulating element 11 and in a corresponding recess of the second fixing means 41. In the connected state, each of the four screws 19 also abuts a corresponding section of the second abutment surface 39 of the printed circuit board 13. A clamping force acts between each screw 19 and the corresponding section of the second contact surface 39, which clamping force is at least part of the connecting force that acts perpendicular to the first channel plane and is greater than a predetermined minimum connecting force.
In the connected state shown in fig. 1, the first contact surface 49 faces the first and second channel. The second contact surface 39 faces away from the first and second channels. Each of the first and second channel planes runs parallel to the first contact surface 49. In the connected state, a section of the receiving surface 47 of the insulating element 11 forms a section of the first channel, and a section of the receiving surface 47 of the insulating element 11 forms a section of the second channel. In addition, the contact surface 35 of the insulating element 11 lies flat against the first contact surface 49 of the printed circuit board 13.
Each of these positioning means 43 of the circuit board 13 extends perpendicularly to the first contact surface 49 of the circuit board 13 and is formed as a depression. In the connected state shown in fig. 1, each of these first positioning means 21 of the base part 9 extends perpendicularly to the first contact surface 49 of the circuit board 13 and engages in a corresponding positioning means 43 of the circuit board 13. In addition, in the connected state, each of these first positioning means 21 of the base part 9 engages into a corresponding positioning means 37 of the insulating element 11.
In the connected state, a gap can be arranged between the base part 9 and a section of the first contact surface 49 of the printed circuit board 13. In this gap a section of the insulating element 11 can be arranged.
Fig. 4 shows a schematic perspective view of a partial section (left side) and a schematic cross-sectional view of a section (right side) of a second embodiment of the inventive conductive track sensor assembly 1. The first fastening means 29 has a latching projection 51 with an abutment face and a spring element 53 with an abutment face. The spring element 53 can be brought from an unloaded state into the elastically preloaded state shown in fig. 4. The second fastening means 41 has a section of the first contact surface 49 of the printed circuit board 13 and a section of the second contact surface 39 of the printed circuit board 13. In the connected state shown in fig. 4, the contact surface of the spring element 53 contacts a section of the first contact surface 49. In the connected state, the contact surface of the engagement projection 51 contacts a section of the second contact surface 39. The spring element 53 is in a preloaded state, so that a clamping force acts between the contact surface of the spring element 53 and the section of the first contact surface 49 and between the contact surface of the latching projection 51 and the section of the second contact surface 39. The clamping force is at least a portion of the connecting force, which acts perpendicular to the first channel plane and is greater than a predetermined minimum connecting force.
The first fastening means 29 of the inventive conductor rail sensor arrangement 1 can have a screw section and a head connected to the screw section, which has an abutment surface. The second fastening means 41 of the inventive track-sensor arrangement 1 can have a recess and a section of the second contact surface 39 of the printed circuit board 13. In the connected state, for this case, the bolt section is arranged in the recess of the second fixing means 41. The head contact surface and the section of the second contact surface 39 of the printed circuit board 13 then contact one another, so that a clamping force acts between the head contact surface and the section of the second contact surface 39 of the printed circuit board 13. The clamping force is at least a portion of the connecting force, which acts perpendicular to the first channel plane and is greater than a predetermined minimum connecting force.
Fig. 5 shows a schematic perspective view of a third embodiment of the inventive conductive track sensor arrangement 1, and fig. 6 shows a schematic perspective view of a section of the third embodiment of the inventive conductive track sensor arrangement 1 from fig. 5. Each of the four first fastening means 29 has a respective catch projection 51 with an abutment face and a respective spring element 53 with an abutment face. Each of these spring elements 53 is in an unloaded state. The base part 9 integrally forms an insulating element 11. The base part 9 may be manufactured by over-moulding the first 5 and second 7 electrically conductive tracks, wherein expansion occurs upon curing of the base part 9, such that a force-fitting connection is created between the base part 9 and the first electrically conductive track 5 and between the base part 9 and the second electrically conductive track 7.
It may additionally be noted that "having" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. It may furthermore be mentioned that also combinations of features already described with reference to one of the above embodiments with other features of the further embodiments described above may be used. Reference signs in the claims shall not be construed as limiting.
List of reference numerals
1 conductive track-sensor assembly
3 sensor device
5 first conductive track
7 second conductive track
9 base part
11 insulating element
13 Circuit board
15 sensor
17 plug connector
19 screw
21 first positioning means of the base part
23 Cable fixing area
25 bottom region
27 support leg
29 first fixing means
31 projection
33 recessed part
35 contact surface of insulating element
37 positioning device for insulating element
38 fixing device for insulating element
39 second contact surface of circuit board
41 second fixing device
43 positioning device for circuit board
45 second positioning means of the base part
47 receiving surface of insulating element
49 first contact surface of circuit board
51 engaging projection
53 spring element
Claims (16)
1. A sensor device (3) for receiving an electrically conductive track (5), the sensor device having:
a base part (9) with a receiving surface and a first fixing means (29), the receiving surface forming at least a section of a channel for receiving a section of the electrically conductive track (5), the channel having a bottom extending along a channel plane,
a planar printed circuit board (13) having a first contact surface (49) and a second contact surface (39) which run parallel to one another, and having a second fastening means (41),
and a sensor (15) connected to the circuit board (13) on the side of the second contact surface (39),
wherein the first fixing means (29) and the second fixing means (41) are connectable to each other,
wherein the sensor device (3) is in a connected state when the first fixing means (29) and the second fixing means (41) are connected to each other,
wherein in the connected state the first contact surface (49) faces the passage and the second contact surface (39) faces away from the passage, wherein a connecting force, which runs parallel to the first contact surface (49) and is perpendicular to the passage plane, acts between the first fastening means (29) and the second fastening means (41),
wherein the joining force is greater than a predetermined minimum joining force.
2. The sensor device (3) according to claim 1,
wherein the first fixing means (29) has a recess with an internal thread,
wherein the second fixing means (41) has a recess and a section of the second contact surface (39) of the circuit board (13),
wherein in the connected state a screw (19) is screwed into the internal thread, is arranged in the recess of the second fixing means (41) and abuts the section of the second abutment surface (39) of the circuit board (13) such that a clamping force acts between the screw (19) and the section of the second abutment surface (39),
wherein the clamping force is at least a portion of the connecting force.
3. The sensor device (3) according to claim 1,
wherein the first fastening means (29) has a screw section and a head connected to the screw section, the head having an abutment surface,
wherein the second fixing means (41) has a recess and a section of the second contact surface (39) of the circuit board (13),
wherein in the connected state the bolt section is arranged in a recess of the second fixing means (41) and the contact surface of the head and the section of the second contact surface (39) of the circuit board (13) contact each other such that a clamping force acts between the contact surface of the head and the section of the second contact surface (39) of the circuit board (13),
wherein the clamping force is at least a portion of the connecting force.
4. The sensor device (3) according to claim 1,
wherein the first fixing means (29) has a latching projection (51) with an abutment face and a spring element (53) with an abutment face,
wherein the spring element (53) can be brought from an unloaded state into a resiliently preloaded state,
wherein the second fastening means (41) has a section of the first contact surface (49) of the circuit board (13) and a section of the second contact surface (39) of the circuit board (13),
wherein in the connected state the contact surface of the spring element (53) contacts the section of the first contact surface (49), the contact surface of the engaging projection (51) contacts the section of the second contact surface (39), and the spring element (53) is in the preloaded state such that a clamping force acts between the contact surface of the spring element (53) and the section of the first contact surface (49) and between the contact surface of the engaging projection (51) and the section of the second contact surface (39),
wherein the clamping force is at least a portion of the connecting force.
5. Sensor device (3) according to one of claims 1 to 4,
wherein the sensor device (3) has an electrically insulating element (11) with a receiving surface (47) and an abutment surface (35) running parallel to each other,
wherein in the connected state, the receiving surface (47) of the insulating element (11) forms a section of the passage and the contact surface (35) of the insulating element (11) contacts the first contact surface (49) of the printed circuit board (13).
6. The sensor device (3) according to claim 5,
wherein the insulating element (11) has a foil.
7. The sensor device (3) according to claim 5,
wherein the base part (9) integrally constitutes the insulating element (11).
8. Sensor device (3) according to one of claims 1 to 4,
wherein the base part (9) constitutes a protrusion (31) extending into the channel,
wherein the protrusion (31) of the base part (9) engages into the recess (33) of the electrically conductive track (5) when the section of the electrically conductive track (5) is arranged in the channel and has a recess (33).
9. Sensor device (3) according to one of claims 1 to 4,
wherein the base part (9) has a first positioning means (21) extending perpendicular to the channel plane,
wherein the circuit board (13) has a positioning means (43) which extends perpendicularly to the first contact surface (49) of the circuit board (13),
wherein in the connected state, the first positioning means (21) of the base part (9) extends perpendicularly to the first contact surface (49) of the circuit board (13) and engages in the positioning means (43) of the circuit board (13).
10. The sensor device (3) according to claim 9,
wherein the insulating element (11) has a positioning means (37),
wherein in the connected state the first positioning means (21) of the base part (9) engages into the positioning means (37) of the insulating element (11).
11. Sensor device (3) according to one of claims 1 to 4,
wherein the base part (9) has second positioning means (45) for coupling with a coupling element of a pre-installation tool on a side of the channel plane facing away from the circuit board (13),
wherein the second positioning means (45) extend perpendicular to the channel plane.
12. Base part (9) adapted to be connected to a circuit board (13) so as to constitute a sensor device (3) according to one of claims 1 to 11,
wherein the base part (9) has the receiving face which at least constitutes the section of the channel with a bottom extending along the channel plane for receiving the section of the electrically conductive track (5),
wherein the base part (9) has the first fixing means (29) which can be connected with the second fixing means (41) of the circuit board (13).
13. A conductive track-sensor assembly (1) with a sensor device (3) according to one of claims 1 to 11 and a conductive track (5),
wherein the sensor device (3) is in the connected state and a section of the electrically conductive track (5) is arranged in the channel.
14. The conductive track-sensor assembly (1) according to claim 13,
wherein the section of the electrically conductive track (5) protrudes the receiving face of the base part (9) perpendicular to the channel plane.
15. The conductive track-sensor assembly (1) according to one of claims 13 and 14,
wherein a gap is arranged between the base part (9) and a section of the first contact surface (49) of the circuit board (13).
16. The conductive track-sensor assembly (1) according to one of claims 13 and 14,
wherein the section of the electrically conductive track (5) has a recess (33),
wherein the protrusion (31) of the base part (9) engages into the recess (33) of the electrically conductive track (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019205236.3 | 2019-04-11 | ||
| DE102019205236.3A DE102019205236A1 (en) | 2019-04-11 | 2019-04-11 | Sensor device, base part and busbar sensor arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111811558A true CN111811558A (en) | 2020-10-23 |
Family
ID=72613498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010278130.7A Pending CN111811558A (en) | 2019-04-11 | 2020-04-10 | Sensor device, base part and conductive track-sensor assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111811558A (en) |
| DE (1) | DE102019205236A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021211454A1 (en) | 2021-10-12 | 2023-04-13 | Zf Friedrichshafen Ag | Sensor arrangement for measuring a current |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102019205236A1 (en) | 2020-10-15 |
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