Connection assembly for a sensor assembly and sensor assembly
The disclosure relates to a connection assembly for a sensor assembly having a connection element which is electrically and mechanically connected to one end of at least one wire of a connection cable in a first contacting region and can be electrically and mechanically connected to a sensor element in a second contacting region, wherein the connection element is at least partially enclosed by a plastic overmold which has a window-shaped recess in a transition region between the first contacting region and the second contacting region which is sealed in the injection molding die during the injection process of the plastic overmold and a corresponding sensor assembly. According to the disclosure, a positioning opening is arranged in the transition region such that the connection element can be positioned in the injection molding die and the transition region surrounding the positioning opening is sealed flat in the injection molding die to create the window-shaped recess.
1. A connection assembly for a sensor assembly comprising:
a connection element electrically and mechanically connected to one end of at least one core of a connection cable in a first contact-making region and configured to be electrically and mechanically connected to a sensor element in a second contact-making region,
wherein the connection element is at least partially encased by a plastic coating which has a window-like cutout in a transition region between the first contact-making region and the second contact-making region,
wherein said cutout is sealed off during an injection process for the plastic coating in an injection-molding die,
wherein a positioning opening is arranged in the transition region such that the connection element is configured to be positioned in the injection-molding die, and
wherein the transition region, which surrounds the positioning opening, in the injection-molding die for producing the window-like cutout is sealed off.
2. The connection assembly as claimed in claim 1 , wherein the first contact-making region and the second contact-making region are arranged in different planes, with the transition region configured, in order to bridge an existing height difference between the first contact-making region and the second contact-making region, as a sloping plane in which two transition webs laterally delimit the positioning opening.
3. Connection assembly as claimed in claim 1 , wherein two first connection pieces are arranged in the first contact-making region and connected to each other by a first connecting web that delimits the positioning opening at one end.
4. The connection assembly as claimed in claim 3 , wherein:
a first transition web connects a first of the two first connection pieces to a corresponding first of the two second connection pieces, and
a second transition web connects a second of the first connection pieces to a corresponding second of the two second connection pieces.
5. The connection assembly as claimed in claim 3 , wherein the first connecting web and/or the second connecting web are severed after the injection process in order to separate the two first connection pieces and/or the two second connection pieces from one another.
6. The connection assembly as claimed in claim 3 , wherein the electrical and mechanical connection in the first contact-making region between the first connection pieces and in each case one end of a core of the connection cable is made by a crimped connection or a soldered and/or welded connection.
7. The connection assembly as claimed in claim 6 , wherein the crimped connection between the first connection pieces and in each case one end of the cores of the connection cable are established by first connection pieces configured as a crimping lug or as additional crimping elements.
8. The connection assembly as claimed in claim 7 , wherein the first connection pieces, which are configured as a crimping lug, are bent after the respective crimped connection is established, with the respective bending region being arranged outside the sealing region for producing the window-like cutout.
9. Connection assembly as claimed in claim 1 , wherein two second connection pieces are arranged in the second contact-making region and connected to each other by a second connecting web that delimits the positioning opening at one end.
10. A sensor assembly for a vehicle, in particular for establishing a rotation speed and/or direction of rotation, comprising:
a sensor element, including a connection assembly having a connection element which is electrically and mechanically connected to one end of at least one core of a connection cable in a first contact-making region and can be electrically and mechanically connected to a sensor element in a second contact-making region,
wherein the connection element is at least partially encased by a plastic coating which has a window-like cutout in a transition region between the first contact-making region and the second contact-making region,
wherein said cutout is sealed off during the injection process for the plastic coating in the injection-molding die,
wherein a positioning opening is arranged in the transition region such that the connection element can be positioned in the injection-molding die, and
wherein the transition region, which surrounds the positioning opening, in the injection-molding die for producing the window-like cutout is sealed off.