An inductive transmitter has a housing 1 within which two pole shoes 8, a permanent magnet 7 arranged between the pole shoes 8 and a coil 6 surrounding the permanent magnet 7 and the pole shoes 8 are arranged. The two ends of the coil 6 are connected with an output connection from which a cable 16 is conducted outwardly from the housing 1. The electric components, such as the coil 6, output connection pieces 9, 9' and output connection contacts 23, 23', are arranged in the watertight inside of the housing 1, while the permanent magnet 7 and the pole shoes 8 are received in a pot-shaped recess 14 developed communicatingly outside the inside of the housing in a coil support.
A multiple ignition coil, in particular for an internal combustion engine for an automotive vehicle, has a casing in which are integrated at least two magnetic assemblies, at least two magnetic flux return circuits constituting a metallic armature of the casing, and mounting assembly for anchoring the coil to the vehicle, these mounting assembly comprising metallic cores which are entirely separate from the metallic armature and which are retained by moulding within projecting bosses of the casing.
An electromagnetic pickup has a coil and a core. A noise shielding cylindrical member of magnetic material is provided around the coil to form an open magnetic circuit between the noise shielding member and the core.
The magnetic sensor comprises a sensor assembly, and a resin molding member surrounding the sensor assembly and defining a housing, the sensor assembly comprising a magnet for generating a magnetic flux, a magnetic core for defining a magnetic circuit, a coil wound around the magnetic core for detecting the change in the magnetic flux flowing through the magnetic core and a support member including a coil bobbin for supporting an assembly of the magnet, the magnetic core and the coil, and the support member comprising an engaging portion which is a surface exposed from the resin molding member for positioning the sensor assembly in a predetermined position during the molding of the resin molding member, so that the sensor assembly can be supported within the resin mold die by the engaging portion between the magnetic core and the coil bobbin or only by the engaging portion of the coil bobbin, so that the stable positioning and support is provided.
An ignition device has a housing provided with a high voltage terminal post for receiving a cable. An ignition winding is supported in a coil form. An end of a solid wire is inserted into a hole in the coil form and an end of the ignition winding is wound around a free part of the wire. Then the coil form is inserted into the housing and the free end part of the wire is received in a housing recess at the rear end of the terminal post. A contact pin is pressed into the terminal post unitl the rear end of the pin makes contact with the wire. Then the housing recess is filled with casting resin to fix the pin and the wire with the winding end in position.
The invention provides an iduction generator comprising a plastic injection-molded housing having a port and one or more pole shoe(s) associated with a permanent magnet. A plastic bobbin inserted into the port and having a coil wound thereon which, through soldering eyelets, is connected to two contact tags in communication with an outwardly guided cable. A mounting member, with the port at the end thereof facing the soldering eyelets being closely sealed by a lid welded to the housing. To provide an induction generator that is easy to manufacture and that insures a substantially improved operation, the port of the housing at the end thereof facing away from the soldering eyelets is closed by a bottom integrally formed with the housing and the pole shoe or shoes along with the associated permanent magnet are integrated in the housing.
