Abstract: The present invention relates to an ignition coil for ignition systems, in particular a rod ignition coil for internal-combustion engines, comprising at least one primary winding and at least one secondary winding, a high voltage being induced in the secondary winding when current flows in the primary winding. A ferromagnetic core is surrounded in part by the primary winding and the secondary winding and one of the two windings is additionally surrounded at least in part by the other. To provide an improved ignition coil which ensures increased reliability in operation and energy efficiency and a reduced risk of overheating during operation, at least one of the windings comprises at least one portion having an elevated winding density relative to the remaining winding density, the diameter of the innermost turns in the at least one portion being smaller than the diameter of the innermost turns in the remaining winding portions.

Abstract: The present invention relates to an ignition coil for ignition systems, in particular a rod ignition coil for internal-combustion engines, comprising at least one primary winding and at least one secondary winding, a high voltage being induced in the secondary winding when current flows in the primary winding. A ferromagnetic core is surrounded in part by the primary winding and the secondary winding and one of the two windings is additionally surrounded at least in part by the other. To provide an improved ignition coil which ensures increased reliability in operation and energy efficiency and a reduced risk of overheating during operation, at least one of the windings comprises at least one portion having an elevated winding density relative to the remaining winding density, the diameter of the innermost turns in the at least one portion being smaller than the diameter of the innermost turns in the remaining winding portions.

Abstract: The invention relates to a magnetic switch having a yoke which has the shape of a rotationally symmetrical cup on the base of which is arranged a permanent magnet. The flux of the permanent magnet is conducted via a core, which has a radial core flange, to the plate-shaped armature. For the operational air gap effective between the armature and the core and the yoke and the magnetic resistance WA thereof, the following relation applies in relation to the marginal air gap formed between the core flange and the yoke: WA<WR. As a result of the rotational symmetry with a yoke having the shape of a cup, it is possible to generate a high holding force for the armature with a small structural volume.

Abstract: The invention relates to a magnetic switch having a yoke which has the shape of a rotationally symmetrical cup on the base of which is arranged a permanent magnet. The flux of the permanent magnet is conducted via a core, which has a radial core flange, to the plate-shaped armature. For the operational air gap effective between the armature and the core and the yoke and the magnetic resistance WA thereof, the following relation applies in relation to the marginal air gap formed between the core flange and the yoke: WA<WR. As a result of the rotational symmetry with a yoke having the shape of a cup, it is possible to generate a high holding force for the armature with a small structural volume.

Abstract: The electromagnet system has a yoke (1) and a round core 92) that has a cylindrical shaft and an outwardly expanded cone section (25) toward the fastening end. The core has its shaft plugged in advance into a round hole (13) of the yoke proceeding from the outside. The cone section (25) of the core also has a thread with which it is turned into the thread-free round hole (13) of the yoke (1) by being turned. In this way, the core can be exactly positioned and a good interference fit and a good magnetic coupling are achieved.

Abstract: A single or double relay is provided. The relay has a base and a coil body. Each relay has a coil with an axis parallel to the bottom side of the base, an angled yoke and a plate-shaped armature. The armature is connected to a contact spring that is split into two fork-like legs. A contact leg carries a movable contact and a terminal leg that is connected to a spring carrier in the region in front of the movable armature end. With the double relay, the two armatures lie parallel at opposite ends of the base. The design yields a simple assembly with good heat dissipation particularly for a double relay for high switching currents.

Abstract: An electromagnetic relay and methods for its manufacture are provided. The relay has a coil body with flanges and with at least one winding disposed between the flanges. A rod-shaped core is respectively arranged axially inside each winding. The yoke is secured against motion in the longitudinal direction and against pivotal movement in a coil flange by mounting elements. In addition, the first end of the core is connected on the side surface of the first yoke leg by welding or soldering. A double relay with first yoke legs disposed next to each other in parallel fashion is preferably created, whereby the core-yoke connection is produced in a simple manner and a good magnetic transition is ensured.

Abstract: In the relay, a holding pin for a contact spring is arranged in each case in the region between the armature and the coil in such a way that the load current that flows via the contact spring can flow through the ferromagnetic circuit of the coil, comprising the core, the yoke (12) and the armature (13). In order to avoid negative effects of such a current loop, a connecting pin (110) is anchored in a base body outside the ferromagnetic circuit, on that side of the armature opposite to the contact spring (7), which connecting pin conducts the load current of the contact spring via a hoop portion (111) that engages over the armature. Optionally, the holding pin (9) of the contact spring may also be additionally contacted with a part of the load current, in order to make use of certain effects of the current loop.

Abstract: A relay (1), particularly a relay with solder terminal pins (13) connected onto a plug adaptor that is formed by a base (20) of insulating material with male plug elements for plugging the adaptor and relay into a circuit. The adaptor has a male connector member with a plurality of conductor elements embedded or inserted into the base and a plurality of high-current blades bent respectively off from the conductor elements. After soldering of the terminal pins (13) to the conductor segments (25), the base region surrounded by a circumferential wall (22) is filled with casting compound. As a result thereof, the arrangement is sealed on all sides and the adaptor with the blade is stabilized and strengthened, so that it can withstand high plugging forces.

Abstract: In a relay system, a flat yoke leg (21) is provided at which a plate-shaped armature (3) is seated via an armature spring (10). The flat yoke leg is arranged generally parallel to an axis of a relay coil core (1). An armature plate (3) has an end face seated at a broad underside of the yoke leg (21). A bearing section (12) of the armature spring lies against an end face of the yoke leg (21) and extends to lie flatly against the armature, to which it is preferably secured. A pre-stress section (13) of the armature spring extends axially beyond the bearing section (12) and is hooked and biased against a retainer peg (25) fashioned as an extension of the yoke leg. As a result thereof, the armature is urged against a bearing edge (22) at the underside of the yoke leg. Moreover, the armature is biased into a normal quiescent position with a predetermined force which is adjustably dependent on the deflectable position of the retainer peg.

Abstract: The electromagnet system has a bent yoke and a round core which has a constant cross-section from a pole end towards a mounting end, and the core has an outwardly expanded tapered section at the mounting end. The core is inserted from the outside into a hole in the yoke, with the pole end being first, and the core is adjusted and fixed by means of pulse-like shocks. Thus, the core is joined to the yoke by a force fit which is a uniformly reliable firm seat.

Abstract: A method is provided for soldering a coil winding to a terminal pin. A specific quantity of solder is applied onto the terminal pin, the terminal pin having a winding end wrapped therearound. The solder, for example, can be applied by immersing the pin end into a solder bath having a temperature only slightly above the melting point of the solder. Subsequently, the solder is melted with a welding torch under a protective atmosphere only at a power and time required to achieve a soft-soldering temperature. As a result thereof, a soldering free of fluxing agent and without the high thermal stress of a welding is possible. Other embodiments include placing a ring of solder onto the terminal prior to heating. Also, a predetermined length of solder wire can be brought into contact with the terminal pin prior to heating. The invention provides a guide tube device for such a purpose.

Abstract: The contact element (10) is formed from a round wire, this round wire being bent in the shape of a hairpin having two parallel limbs (11, 12), at least one of which is used as a soldering connecting pin. The curved region between the two pins is stamped flat to form a common contact zone (14) having a flat surface, and is provided with a contact piece. In consequence, heavy-current contacts can be constructed particularly favorably with printed-circuit board connections.

Abstract: A relay having a basic body with a bearing pin secured in its wall or base which protrudes perpendicularly from the wall. A contact spring made of strip material is taken partly around the bearer pin with a securing section in the form or a clamping sleeve. Besides a spring shank it forms on the other side of the securing section a prestressing shank supported on a supporting component, preferably a coil flange and thus prestresses the spring shank in its position of rest. The contact spring can also be fitted in cramped and poorly accessible positions, e.g. between the coil and the armature and given a predetermined prestress without its having to be soldered to the bearer pin or subsequently adjusted.

Abstract: A relay having two coils which are arranged axially flush on a base body (1), wherein each coil has a winding (23, 33) and a core (14, 15) connected by means of a U-shaped yoke (12). A single armature (13) is supported on a center section of the yoke (12) such that it can be changed over between the inner ends of the two cores (14, 15). In addition, two contact springs (7, 8) are arranged between the two cores, on both sides of the same, parallel to the armature. The contact-making ends of the two contact springs rest on a common center contact element (61) in the quiescent state. Depending on which winding (23 or 33) is energized, a corresponding contact spring (7 or 8 respectively) is lifted off the center, contact element (61) and moved into contact with an outer contact element (51 or 52 respectively). The relay is advantageously suited as a pole-reversal relay for driving DC motors having a changing rotation direction (e.g., as found in motor vehicles).

Abstract: An end (2) of an electrical connecting line (1) for feeding a switching current is connected in an electrically conductive fashion, engaging through a recess (4) of a contact support (3), to a contacting piece (7) arranged on the contact support (3).In order to simplify the manufacture of such a contacting device, it is provided that the one end (2) is connected to an extension (10) which is formed by a stamping process in which the recess (4) of the contact support (3) is used as a shaping tool for the extension (10). It is thus ensured that the dimensions of the extension (10) are matched in an optimum fashion to the dimensions of the recess (4). In addition, due to the production of the extension (10) in the recess (4) itself, the positioning of the end (2) bearing the extension (10) relative to the contact support (3) or to its recess (4) is dispensed with.The contacting device can be manufactured, in particular for switchgear and relays.

Abstract: In an electromagnetic switching system, axially arranged in a coil former (1), which carries a counter-contact element (12) in a flange (2), there is a core (5) which is firmly joined with one end (5b) to an angular yoke (7). The yoke forms in addition a bearing for an armature (9), which forms a working air gap with a pole face (6) of the core and in addition carries a movable contact element (10). In order to maintain a contact follow (a) once it has been established, the core is firmly joined to the coil former (1) by means of holding elements (14) at as short an axial distance from the counter-contact element (12) as possible. The contact follow can be adjusted by displacement between coil former (1) and core (5).

Abstract: A contact arrangement for a change-over contact relay has a movable contact spring (2), on the free end (3) of which switching contact pieces (5, 6) are arranged on both sides, the current to be switched being supplied via an electrical connecting line (9) to the switching contact pieces (5, 6). [2.2] In order to permit a mass distribution, which is as symmetrical as possible, in the region of the free end (3) of the contact spring (2) and a supply, which is as loss-free as possible, of the current to be switched to the switching contact pieces (5, 6), [it is provided that] the switching contact pieces (5, 6) are connected directly in an electrically conducting manner to the one end (8) of the electrical connecting line (9). For this purpose, the one end (8) of the connecting line (9) or a switching contact piece (5, 6) preferably has an extension piece, the end face of which forms a joining face for the purpose of producing the electrically conducting connection.

Abstract: Before the flat plug (4) is inserted into a perforation (3) of the base (1), at least one rib (7) extending in the direction of insertion is stamped on a flat side. After the flat plug (4) has been inserted, the rib (7) is peeled opposite the direction of insertion and deformed in the direction towards the underside of the base. This results in a positively locking fastening of the flat plug (4) without deformations in the perforation (3) of the base.

Abstract: A relay has a coil body (1) as a support for a magnet system and also a base. Coil connection elements (3, 4) serve for the connection between coil body and base, which coil connection elements are fastened with horizontal fastening legs (33, 34, 35, 43, 44) in corresponding horizontal insert channels (13, 14, 15, 16, 17) of the coil flanges (11, 12). In addition, wind-on pieces (36, 46) which directly support the winding ends of the coil are formed onto the coil connection elements (3, 4). This results in a manufacture of the relay with few component parts which is simple and can be automated.