Sensor device and method for producing a sensor device
1. A sensor device (1) comprising a support member (2),
wherein the bracket member (2) accommodates
A sensor element (3) having a coupling element (9) and
-a plug contact (6),
characterized in that the plug contact (6) and the coupling element (9) are each connected to one another in an electrically conductive manner by an electrical connection element (5), wherein the connection element (5) is flexible,
so that the connecting element (5) assumes a shape profile when inserted into the holder (2), which shape profile matches the relative positioning and orientation of the plug contact (6) and the coupling element (9) of the sensor element (3) relative to one another, and,
-the plug contact (6) and the coupling element (9) each have an outlet direction (x, y),
and the connecting element (5) has a contact region for contacting the plug contact (6) and the coupling element (9),
wherein the connecting element (5) has a shape profile which, at least at the contact region, corresponds to the outlet direction (x, y) of the plug contact (6) and to the outlet direction (x, y) of the coupling element (9).
2. Sensor device (1) according to claim 1, characterized in that the contact area is arranged at the end of the connecting element (5).
3. Sensor device (1) comprising a basin-shaped carrier member (2), wherein the basin shape of the carrier member (2) is formed by a bottom (11), two side walls (12a, 12b), a front wall (13a) and a rear wall (13b) which define an interior space (4) of the carrier member (2), wherein the carrier member (2) accommodates in its interior space (4) the carrier member (2)
A sensor element (3) having a coupling element (9) and
-a plug contact (6),
characterized in that the plug contact (6) and the coupling element (9) are each connected to one another in an electrically conductive manner by means of an electrical connection element (5),
wherein the connecting element (5) is flexible such that the connecting element (5) assumes a shape profile when inserted into the carrier (2) that is adapted to the relative positioning and relative orientation of the plug contact (6) and the coupling element (9) of the sensor element (3) relative to one another, wherein the plug contact (6) penetrates a rear wall (13b) of the carrier component (2) in order to be received in the carrier component (2) and thus in the interior (4) of the carrier component (2).
4. Sensor device (1) according to claim 1 or 3, characterized in that the carrier member (2) has at least one spacing element (15, 16) and at least one separating element (17, 18),
wherein the connecting element (5) can be spaced apart relative to at least one wall (11, 12a, 12b) of the carrier element (2) by means of the at least one spacing element (15, 16) and the at least two connecting elements (5) can be separated from one another by means of the at least one spacing element (17, 18),
wherein the shape of the connecting element (5) is determined by the at least one spacer element (15, 16) and the at least one separating element (17, 18) when the connecting element (5) is installed.
5. Sensor device (1) according to claim 1 or 3, characterized in that the connecting element (5) has a planar course before installation, which course changes into a matching course of shape when installed.
6. A method for producing a sensor device (1), wherein the sensor device (1) comprises a carrier component (2) having two plug contacts (6) and two coupling elements (9) of a sensor element (3),
it is characterized in that the preparation method is characterized in that,
the plug contact (6) and the coupling element (9) are each connected (306, 307) to one another in an electrically conductive manner by means of an electrical connection element (5),
wherein the connecting element (5) is flexible,
so that the connecting element (5) when inserted (306) into the carrier (2) assumes a shape profile that is adapted to the relative positioning (x, y) and the relative orientation (x, y) of the plug contact (6) and the coupling element (9) of the sensor element (3) relative to one another, and,
-the plug contact (6) and the coupling element (9) each have an outlet direction (x, y),
and the connecting element (5) has a contact region for contacting the plug contact (6) and the coupling element (9),
in the insertion step (306), the connecting element (5) is inserted such that it assumes a shape profile that corresponds, at least in the contact region, to the direction of extraction (x, y) of the plug contact (6) and to the direction of extraction (x, y) of the coupling element (9).
7. A method for manufacturing a sensor device (1), wherein the sensor device (1) comprises a basin-shaped carrier member (2) having two plug contacts (6) and two coupling elements (9) of a sensor element (3), wherein the basin shape of the carrier member (2) is formed by a bottom (11), two side walls (12a, 12b), a front wall (13a) and a rear wall (13b) which define an interior space (4) of the carrier member (2), wherein the sensor element (3) having the two coupling elements and the two plug contacts (6) are accommodated in the interior space;
it is characterized in that the preparation method is characterized in that,
the plug contact (6) and the coupling element (9) are each connected (306, 307) to one another in an electrically conductive manner by means of an electrical connection element (5),
wherein the connecting element (5) is flexible,
so that the connecting element (5) assumes a shape profile when inserted (306) into the carrier (2) that is adapted to the relative positioning (x, y) and the relative orientation (x, y) of the plug contact (6) and the coupling element (9) of the sensor element (3) relative to one another, wherein the plug contact (6) is pushed through the rear wall (13b) of the carrier component (2) in order to be received in the carrier component (2) and thus into the interior (4) of the carrier component (2).
8. Method according to claim 6 or 7, characterized in that the inserted connecting elements (5) are each made to run
-is in electrically conductive contact with the plug contact (6) on one side,
and is in electrically conductive contact with the coupling element (9) on the other side.
9. Method according to claim 6 or 7, characterized in that the bracket member (2) has at least one spacing element (15, 16) and at least one separating element (17, 18),
wherein the connecting element (5) can be spaced apart relative to at least one wall (11, 12a, 12b) of the carrier element (2) by means of the at least one spacing element (15, 16) and the at least two connecting elements (5) can be separated from one another by means of the at least one spacing element (17, 18),
wherein the shape of the connecting element (5) is determined by the at least one spacer element (15, 16) and the at least one separating element (17, 18) during the insertion step (306) of the connecting element (5).
10. Method according to claim 6 or 7, characterized in that the connecting element (5) has a planar course before the insertion step (306), which course changes into a matching course of shape when the connecting element (6) is inserted.
11. Method according to claim 6, characterized in that the contact area is arranged at the end of the connecting element (5).
12. Method according to at least one of claims 6 to 11, characterized in that the carrier component (2) has at least one separating element (17, 18), wherein the at least two connecting elements (5) can be separated from one another by means of the at least one separating element (17, 18), wherein the separating element (17, 18) is deformed in order to fix the connecting element (5) after the insertion step (306), wherein the connecting element (5) is adapted to the mating surface of the carrier component (2) by deforming the separating element (17, 18).
13. Method according to claim 12, wherein the mating surface is a spacer element (15, 16) spaced apart from at least one wall (12a, 12b, 11) of the bracket member (2).
14. Method according to claim 12, characterized in that at least one separating element (17, 18) is enlarged in its size in an upper region of the bottom (11) facing away from the bracket member upon deformation.
15. Method according to claim 12, characterized in that the deformation of the separating elements (17, 18) is carried out under the action of heat.
Background
The publication DE 102009028963 discloses a coupling assembly for a sensor assembly having a coupling element which is electrically and mechanically connected to an end of at least one conductor of a coupling cable in a first contact region and which can be electrically and mechanically connected to a sensor element in a second contact region. The coupling element is at least partially surrounded by a plastic injection molding.
Disclosure of Invention
The sensor device comprises a carrier member which accommodates the sensor element with the coupling element and the plug contact. The plug contacts and the coupling elements are connected to one another in an electrically conductive manner via the electrical connection elements. For this purpose, the connecting element is designed flexibly such that, when inserted into the holder, it assumes a shape profile that matches the relative positioning and relative orientation of the coupling elements of the connector pin and the sensor element relative to one another. The coupling element of the sensor element is understood to be a coupling joint of the sensor element. The sensor device may be, for example, a rotational speed sensor in a motor vehicle, for example for determining the wheel rotational speed or the motor rotational speed. Connecting elements, for example, conductive strips made of copper, are used to connect the connections of the sensors to the connector pins, which guide the signals of the sensors to other devices. In this case, the flexible electrically conductive strip advantageously makes it possible to simply insert the strip into the holder already having the coupling or sensor element and the connector pin positioned. The flexible conductive strip is thereby spontaneously adapted to the situation in the holder in that it assumes a corresponding shape. The shape is understood to mean that the conductor tracks are not only straight along their course, but also match a part of the support or the element to be connected. This makes it possible to provide simple adjustment, for example the length of the conductor strip, in the production line for different sensor types if the geometry of the connection between the holder and the sensor to be produced changes, and thus increases the variety of variants. By using a flexible conductive strip, it is also possible in a simple manner to compensate for tolerances in the arrangement, i.e. tolerances in the placement of the sensor element and its coupling joint and the plug pins, since the conductive strip compensates for these tolerances by matching the shape profile.
In an advantageous development of the sensor device, the plug contacts and the coupling element each have a pull-out direction. The connecting element also has a contact region for contacting the plug contact and the coupling element. The connecting element has a shape profile which, at least at the respective contact region, corresponds to the outlet direction of the plug contact and to the outlet direction of the coupling element. In this way, it is possible to still easily make contact when there are no aligned plug contacts and coupling elements in the holder of the sensor, since the shape of the connecting element in the region of the connection with the respective contact pair coupling element and plug contact follows the respective outlet direction. It is likewise possible to construct in production according to the desired sensor element, and also sensor elements, without parallel or right-angled exit directions of the coupling elements.
Plug contacts having a lead-out direction different from being only parallel or at right angles to the sensor can likewise be used. Again, this increases the variety of variants in manufacture.
In an advantageous embodiment of the sensor device, the contact region is arranged at an end of the connecting element. This enables an easier contacting of the plug contacts arranged on different sides of the sensor and the coupling element of the sensor element.
Furthermore, it is advantageous if the carrier element has at least one spacer element and at least one spacer element. The shape of the connecting element is determined by the at least one spacer element and the at least one separating element when the connecting element is inserted. The provision of the spacer elements and the separating elements in the holder makes it possible to achieve a desired course of the conductive strips intended as connecting elements. The elements built into the support can be potted in a processing step with a sealing material made of silicone, for example. For this purpose, precise positioning of the conductor strip is important, so that it is surrounded on as many sides as possible by the sealing material. The spacing of the conductive strips from the bottom of the holder makes this possible particularly precisely. By means of the separating element, it is ensured that the electrical conductors, i.e. the conductor tracks, extend separately from one another, in order to avoid short circuits.
Furthermore, it is advantageous if the connecting element has a planar course before installation, which changes to a matching course of shape during installation. This enables the elimination of the pretreatment of the connecting element. If strips or stampings for the electrical connection plug and the sensor are selected instead, they must be correspondingly preprocessed in order to have a suitable shape and a suitable orientation.
For the method for manufacturing the sensor device, the sensor device comprises a carrier member having two plug contacts and two coupling elements of the sensor element. The plug contact and the coupling element are each connected to one another in an electrically conductive manner by an electrical connection element. The connecting element used for the production is flexible, so that it assumes a shape profile when inserted into the holder, which is aligned with the coupling elements of the connector pin and the sensor element relative to each other and the relative orientation of the coupling elements matches each other. This makes it possible, as already explained above, to produce the sensor in a simple manner, since tolerances in the arrangement and orientation of the components to be connected, i.e. the coupling joints and the plug pins of the sensor element, are compensated for simply by the flexible, electrically conductive strips.
In an advantageous embodiment, the production method comprises bringing the inserted connecting element into electrically conductive contact with the plug contact on one side and with the coupling element on the other side.
It is also advantageous if the carrier element has at least one spacer element and at least one separating element, and if the connecting element is inserted, the shape of the connecting element is determined by the at least one spacer element and the at least one separating element. This makes it possible to achieve a simple positioning of the conductive strip in the holder.
Furthermore, it is advantageous if the connecting element has a planar course before installation, which changes to a matching course of shape during installation. The changeable shape profile enables a simpler application to the electrical connection when matching existing predetermined conditions, for example the orientation and position of the components to be connected, as already explained.
In an advantageous embodiment, the plug contacts and the coupling elements of the sensor element each have a lead-out direction. Furthermore, the connecting element has a contact region for contacting the plug contact and the coupling element. The connecting elements are inserted during the production of the sensor device in such a way that they have a shape profile which, at least at the contact region, corresponds to the outlet direction of the plug contacts and to the outlet direction of the coupling element. The use of a flexible conductive strip makes it possible to easily adapt to changes in the sensor element or the connector pin to be installed during manufacture, since the conductive strip is adapted to the respective direction of extraction in the contact region.
In an advantageous embodiment, the contact region is at the end of the connecting element. In this case, the contact region can be easily connected to the plug pin or the coupling element.
In a further embodiment of the production method, the support element has at least one separating element which is deformed after installation in order to fix the connecting element. The connecting element is pressed against the mating surface of the carrier component by deformation of the separating element. Whereby the separation element combines multiple functionalities in one. On the one hand, the connecting elements are separated from one another and, on the other hand, the connecting elements are additionally secured.
Furthermore, it is advantageous if the mating surface on which the connecting element is pressed is a spacer element spaced apart from at least one wall of the bracket component. It is possible to press at or in relation to the base to a spacer element arranged at the base. In this way, the fastening can be achieved in the insertion direction, from which the inserted conductor tracks and separating elements are easily accessible.
Furthermore, it is advantageous if, during the deformation, at least one separating element is enlarged in its dimension in an upper region facing away from the base of the carrier element. Thereby, the deformation can be caused from the upper part as seen from the insertion direction.
In an advantageous embodiment, the deformation of the separating element is effected under the action of heat.
Drawings
Fig. 1 shows a sensor device.
Fig. 2 shows a cross section of the sensor device.
Fig. 3 shows a flow chart of a manufacturing method.
Fig. 4 shows a top view of a part of the sensor device.
Fig. 5 shows a cross-section of another part of the sensor device.
Fig. 6 shows a sensor device with a cover plate in the form of a film.
Detailed Description
An embodiment of the present invention is shown in fig. 1. The sensor 1 includes a holder 2, a fixing member 7, and a plug housing 10.
The plug housing 10 can accommodate a coupling cable (not shown) which transmits the sensor signal of the sensor 1 to other electronic components. The geometry of the plug housing can be adapted accordingly to the cable geometry.
The fixing member 7 is used to fix the sensor to another member. For this purpose, the fixing member may be in the form of a connecting plate 7 with a bushing 8. A fastening element (not shown), for example a bolt or a pin, can be guided through the bushing 8 in order to fasten the sensor 1 to another component in a known manner.
The sensor 1 further comprises a holder 2. The holder 2 is constructed in the form of a basin. The basin-like form of the holder 2 is formed by a bottom 11, two side walls 12a, 12b, a front wall 13a and a rear wall 13 b.
The bottom 11, the side walls 12a, 12b, the front wall 13a and the rear wall 13b define an inner space 4 of the rack 2.
The holder 2 can accommodate at least one sensor element 3. The actual measured values of the sensor 1 are received by means of such a sensor element 3. The sensor element 3 can be understood as an ASIC, for example. The sensor element 3 has at least one coupling contact 9 for electrically contacting the sensor element 3. The holder 2 may have a positioning structure that enables the sensor element 3 to be accommodated in the holder 2. Such a positioning structure can be configured as an at least partial supplement to the sensor element 3 and accommodate it in a precisely fitting manner. The positioning structure may accommodate the sensor element 3 and/or the at least one coupling joint 9 along the respective periphery.
The sensor signal of the sensor 1, more precisely of the sensor element 3, must be able to be conducted away from the sensor element and to the plug component 10, where the sensor signal is transmitted.
The sensor 1 has at least one connector pin 6 which can conduct electrical signals from the interior 4 of the holder 2 through the rear wall 13 b. Such a plug pin 6 is made of a conductive material. Such material may be in the form of a copper alloy, for example in the form of CuSn 6.
The plug pins penetrate the rear wall 13b of the holder.
A possible solution for penetrating the rear wall 13b is also shown in fig. 5. The rear wall 13b has an opening 14 through which the connector pin 6 is guided from outside the holder 2 into the interior 4 of the holder 2.
The plug pins 6 can simultaneously establish contact with the coupling cable in the plug member 10.
In order to connect the sensor element 3, more precisely the coupling tab 9 of the sensor element 3, to the plug pin 6, the sensor 1 is provided with at least one electrically conductive strip 5, which electrically conductively connects the coupling tab 9 and the plug pin 6. The conductive strips 5 are provided to be made of an electrically conductive material. Such materials may be in the form of copper alloys, such as CuSn 6. The respective end of the conductor strip 5 is conductively contacted and fixed on one side with the plug pin 6 and on the other side with the coupling tab 9 of the sensor element 3.
Fig. 2 shows a cross section of the stent 2 in the direction of the line denoted by x in fig. 1. Like elements in fig. 2 are denoted by like reference numerals.
There may be a misalignment between the coupling joint 9 and the plug pins 6. In fig. 2, such misalignment may exist in the direction indicated by y. In the situation shown in fig. 2, the connector pin 6 is arranged offset upward with respect to the coupling joint 9. The electrical connection between the coupling nipple 9 and the plug pin 6 must compensate for this misalignment.
The conductive strips 5 are elastically formed. Elastically, it is understood that the conductive strip 5 is not a rigid component, but is deformable. In alternative nomenclature, the conductive strip 5 may also be referred to as flexible. The deformable conductive band 5 can be matched to the existing misalignment between the coupling tab 9 and the plug pin 6. If a conductive strip 5 of suitable length and flexibility is used for the existing sensor geometry, the existing misalignment can thus be compensated simply. Possible materials for this are copper alloys, for example CuSn6, as already explained above. Other materials are equally feasible, as long as they are electrically conductive and sufficiently flexible.
In the previous illustrations, only the connector pins 6, the conductor tracks 5 and/or the coupling tabs 9 are referred to for the sake of simplicity. However, as can be seen in fig. 1, there is usually at least one of these elements, in particular two coupling tabs 9, two plug pins 6 and two electrically conductive strips 5.
The conductive strip 5 to be used can be used as strip material during the production of the sensor device 1. Depending on the design of the sensor device 1, for example the length in the x direction of the carrier 2, a suitable electrically conductive strip 5 can therefore simply be made as a connection between the coupling tab 9 and the plug pin 6. There is no need to produce a new shape of the stamping, as is the case, for example, in a stamping that is rigid in comparison to the flexible conductive strip 5, which must be adapted to another production length of the sensor device 1. The conductive strip need only be separated from the strip material to the appropriate length. In this way flexibility in sensor manufacture is improved.
Likewise, if elastic or flexible conductive strips are used for the electrical connection, an electrical connection between the plug pins 6 and the respectively used sensor elements 3 with the respectively oriented coupling tabs 9 can be established in this way. The orientation is to be understood in that the coupling joint 9 has a lead-out direction, as can be seen, for example, in fig. 2. The coupling joint has an orientation in the x direction. As can be seen in fig. 2, the plug pins likewise have an orientation in the x direction. However, it is likewise conceivable for the orientation of the coupling joint 9 and the connector pin 6 to also have a component in the y direction, i.e. to no longer run parallel to the x direction as can be seen in fig. 2.
The components to be electrically connected, the connection terminals 9 and the connector pins 6, respectively, have a lead-out direction x, y, to which the conductive strips 5 run. The course of the conductor strip 5 can be matched to the direction x, y of the connection terminals 9 and the connector pins 6 at the ends of the conductor strip 5.
Contact regions, in which the conductor tracks 5 are connected to the coupling lugs 9 and to the connector pins, are not shown, but are clearly understood in fig. 2. In the contact region, the conductor strip 5 overlaps the coupling tab 9 and the connector pin 6 as a connecting element 5, so that they can be brought into electrically conductive contact with one another.
The orientation of the sensor elements 3 of the first sensor type in the holder 2 may, for example, have to be different from the sensor elements of the second sensor type. Different orientations of the sensor element 3 can lead to different exit directions of the coupling joint 5. The flexible or otherwise elastic conductive strip can easily assume the direction of extraction and can be fixed at the respective coupling joint 9.
The same applies to the respective alternative orientations of the plug pins 6 with respect to the orientation of the sensor element.
The conductor strip 5 can be designed depending on the type of connection to the coupling nipple 9 and the plug pin 6. The thickness of the conductor tracks 5 used can be chosen, for example, to be sufficiently large that a laser welding method can be used. Other methods, such as resistance welding, are contemplated.
Fig. 4 shows a top view of the sensor 1. The conductive strip 5 connects the coupling joint 9 of the sensor element 3 with the plug pin 6. The conductive strip 5 extends in the interior 4 of the holder 2 and compensates for a misalignment between the connector pin 6 and the coupling lug 9.
The holder 2 has a run-on aid which ensures a desired run-on of the conductor band 5 in the interior 4 of the holder 2.
At least one contact point 15 is present at the side walls 12a, 12b of the support. The contact points 15 serve to separate at least one conductive strip 5 from the respective adjacent side wall 12a and 12 b. The contact points have an extent at the level of the support 2, i.e. corresponding to the y-direction in fig. 2. The abutment prevents the conductive strip 5 from approaching the side walls 12a, 12b of the holder. The extent of the contact point 15 in the y direction of the holder 2 can be adapted to the respective height of the conductive strip 5 extending above the base 11 of the holder 2, since, as explained, the conductive strip 5 can compensate for a misalignment in the y direction between the connection tab 9 and the connector pin 6 and can thus change its height in the interior 4 of the holder 2 along the course of the conductive strip.
The stent 2 also has at least one core 18, which is centrally arranged in the stent. The core 18 likewise has a sufficient extent in the y direction, as already explained for the contact point 15.
The two conductive strips 5 are spatially separated by means of the core 18. The separation of the conductive strips is necessary in order to prevent an electrical short circuit between the conductive strips 5.
The core 18 is deformable so as to fix the conductive strip 5 in the support 2. The deformation can be understood as that the core 18 becomes larger in its size in an upper region away from the bottom 11 of the bracket 2. In the case of an increase in size, the conductive tape 5 is covered by the core 18. By pressing the conductor strip 5 against the respective bearing surface, and thus securing is achieved. The corresponding bearing surface can be, for example, a bearing point 16, which is also described below, or a similar structure, which is formed on at least one wall 11, 12a, 12b of the carrier 2.
Alternatively or in addition to the at least one core 18, a partition 17 between the two conductive strips 5 may also be provided. The partition 17 must likewise have a sufficient extent in the y-direction of the support 2 in order to ensure separation of the conductor tracks 5.
The support may also have at least one support point 16 for each conductive strip 5, which ensures that the respective conductive strip 5 is spaced apart from the bottom 11 of the support 2.
The support point 16 of each conductive strip may have a non-planar surface at the upper end of the bottom 11 facing away from the holder 2. The non-planar surface may be a tip, a pyramid, or a rounded surface.
The contact points 15, the support points 16, the core 18 and, if appropriate, the partition walls 17 can be understood as partitions. The separating portion makes it possible to achieve a separation of the conductive strip 5 present in the sensor 1 from the respective adjacent element, for example the further conductive strip 5, the adjacent wall 12a, 12b or the bottom 11.
As will be explained further below, the manufacture of the sensor 1 comprises sealing the inner space 4 by filling it with a filler, for example silicone. If the conductor strip 5 is spaced apart from other elements, for example another conductor strip 5, an adjacent wall 12a, 12b or the bottom 11, it is ensured that the filling material seals the interior space 4 sufficiently. Thus, by spacing the conductive strips 5 from the bottom 11, the filling can easily reach the area between them. The tip, pyramid or radius of the upper side of the support point 16, against which the conductor strip 5 rests, likewise ensures a support surface that is as small as possible, in order to achieve as high a contact of the conductor strip 5 with the surrounding filling material as possible and thus to optimize the sealing function.
The sensor 1 according to the invention is produced by means of the production method according to the invention. An embodiment of the production method will be described below.
In a first step 301, a stent 2 is formed. The holder 2 is made as a cast component. As can be seen in fig. 5, the holder 2 also has a through-opening 14, through which through-opening 14 the connector pin 6 can pass into the interior 4 and is conductively connected to the conductor track 5 and thus also to the connection terminal 9 of the sensor element 3. Depending on the manufacturing step, the support 2 also has the necessary partitions, namely the abutment points 15, the bearing points 16, the core 18 and the necessary partition walls 17. It has to be noted that the specific design of the partitions, in particular their number, positioning or embodiment (for example embodied as core 18 and/or wall 17) may vary.
The through-openings 14 of the holder 2 shown in fig. 5 can also have a greater extent in the direction of the inserted connector pins 6 than is necessary in order to push the connector pins 6 through the through-openings. In this way, the silicone material, i.e. the filling material, can also reach the region from the interior space 4, in which the plug pins are guided through the rear wall 13b of the holder 2.
In another step 302, the plug 10 is formed. The plug 10 is formed in step 302 in that the plug pins 6 are connected to the housing of the plug 10. The plug pins 6 can be pressed into preformed openings of the housing of the plug 10. Likewise, the plug pins 6 can be injected in a casting process, so that the housing of the plug 10 receives and fixes the plug pins 6.
The carrier 2 and the plug 10 with the plug pins 6 form two intermediate parts in the production method.
The two intermediate members 2, 10, the plug 10 including the plug pins 6 and the carrier 2 are inserted together in step 303.
When the holder 2 and the plug 10 are inserted together, at least one plug pin 6 is pushed through the rear wall 13b of the holder 2. The pins 6 thus reach into the inner space 4 of the holder 2. As already explained, the holder 2 has for this purpose an opening 14 which is visible in fig. 5. When the plug-in connector is plugged together, complementary structures of the plug 10 and the support 2 can be engaged with each other. In this way the mechanical strength of the connection of the two members to each other can be increased. This engagement is exemplarily highlighted in fig. 5 as engagement area 19. It is important that the plug 10 and the holder 2 are positioned in a certain preferential orientation with respect to each other. This preferential orientation can also be achieved by corresponding complementary structures of the two intermediate members 2 and 10. The complementary structures can be provided, for example, in the form of mortise and tenon structures. It is likewise conceivable for the component holder 2 and the plug 10 to be locked to one another.
In a further step 304, the intermediate-component holder 2 and the plug 10 are connected to one another. This can be achieved by means of ultrasonic welding. Other connection techniques may be used.
In a further step 305, the actual sensor element 3 is placed in the holder 2, wherein the sensor element 3 has the already mentioned coupling joint 9.
After the connection of the plug 10 to the holder 2 and in the state in which the sensor element 3 is inserted into the holder 2, the corresponding ends of the plug pins 6 and the coupling tabs 9 are now present in the interior 4 of the holder 2, but they are not in electrical contact.
In order to bring the coupling tabs 9 into electrical contact with the corresponding plug pins 6, in a method step 306, the conductor strip 5 is placed in the holder 2 in such a way that it is introduced, in particular inserted, at a suitable length. In this case, the side walls 12a, 12b, the bottom 11 and the conductor tracks 5 are correctly spaced apart from one another by means of the partitions 15, 16, 17 and/or 18. The contact is thereby completed, i.e. the conductor band 5 is welded together with the coupling joint 9 and the connector pin 6 in a processing step 307.
In the next step 308, the inner space 4 is filled with a filler in order to seal it. This can be achieved with silicone.
In an optional subsequent step 309, a cover plate 20 may be applied on the holder 2 so as to at least partially cover the interior space 4 filled with silicone. Fig. 6 shows sensor 1, which has cover plate 20 as described in step 309.
Such a cover plate 20 protects the sensor, in particular the packing-in this example silicone-from atmospheric influences (for example dirt or water) as well as mechanical influences, which can damage the packing and thus can impair its sealing function. Such a cover plate 6 may be applied in the form of a film or a lid. Such a film can be fixed to the carrier 2, for example, by ultrasonic welding or adhesive bonding.
Not illustrated in detail, but it is possible to additionally introduce further processing steps, such as the installation of the fastening element 7 with the bushing 8 or the introduction of a magnet into the support 2, which may be necessary depending on the measuring principle used (Hall effect, AMR, GMR).
In this embodiment, the sensor 1 described here is illustrated as a rectangle with a front wall, a rear wall, side walls and a bottom and corresponding partitions and openings. Other geometries are likewise possible, wherein the elements can then be distributed analogously. Likewise, a cylindrical sensor has, for example, side faces and front and rear walls. The positioning of the partition must only be adapted if necessary.
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