DE1974072U - COIL CONNECTION FOR AN ELECTROACOUSTIC CONVERTER. - Google Patents

Description

RA.313 536-8.6.b7 ^

S ί $ 1 (version dated May 24, 1967)

SENNHEISER electronic Dr _o- Ingo Fritz Sennheiser

Coil connection for a dynamic electroacoustic! Converter

It is known that the very thin coil wires of the voice coil of a dynamic electro-acoustic transducer, Z ₀ as a microphone via a connection point with the secondary switching elements, for example, the connection line to connect. For this purpose, the very thin coil wires z _o Bo are soldered to soldering lugs that are embedded in plastic parts. They are, for example, injected or riveted using insulating materials. It is also known to hold the soldering eye pins, plates or the like in openings or pockets made of insulating material as connection points, for example to let protrude from the plastic housing part as soldering pins. It is also known to insert wires in plastic parts or ο to adhere to them in all these arrangements, it makes it very difficult to wrap the very thin wires of the voice coil to the pre-tinned joints of secondary switching elements and then to solder ₀ When soldering has very been taken to ensure ensure that the plastic parts that hold the soldering lugs or soldering points are not excessively heated or are even deformed or destroyed by the heat of soldering. The proposed innovation eliminates these disadvantages and simplifies the manufacturing process considerably. The proposed innovation is based on the idea of connecting the very thin wires of the coil winding to a connecting part, for example soldering them, especially in relation to its small effective cross-section has a large surface. The small cross-section has a high thermal conduction resistance and the particularly large one

Surface ensures that the soldering heat is radiated very quickly.

The innovation relates to a coil connector for the voice coil an electroacoustic one! Converter to establish the conductive connection between the ends of the coil winding and the continuing Switching elements, for example connecting cables, transformers, plug strips or the like »This is what makes it special characterized in that the coil connecting part made of thinner, not bendable Metal foil (3) is made with a carrier material ^ 1; 3 «> 3) is firmly connected to its contact surface, e.g. by sticking, sweat sen, injecting or the like,

An embodiment of the innovation is characterized in that

the thin metal foils (3) on the outer surface of the plastic bowl (1) are attached to the magnet system of the electroacoustic transducer. "

An addition to the innovation is characterized in that the thin metal foils are applied to a carrier foil, Z ₀ Bo paper or plastic (3 ° 3), for example by gluing or welding, and thus form a flexible strip conductor »

A supplement of the innovation is t characterized in that the strip conductor is at least flat, firmly connected in the region of the coil terminals to the electro-acoustic transducer system (2) or its cup (1), z _o B ₀ by gluing or welding, "

Another embodiment of the innovation is characterized by that the thin metal foils with a foil (3 «4) on their free Side are covered for the purpose of isolation o

A further embodiment of the innovation is characterized in that the conductor foils are covered on at least one side with an insulated metallic cover foil (3 «51j 3o52), one or both metal foils being grounded if necessary to protect the conductor foils statically, _{or the like}

Fig. 1-6 are intended to explain the firing system. Fig. F shows an exemplary embodiment. “1 denotes a plastic cup that completely or, if necessary, only partially encloses the magnet system 2 of the transducer shown in broken lines.” With ^, “1 is the membrane symbolizes. The surface of the plastic cup 1 carries two connection parts 3 ^{made of} thin copper foil "They are glued on, for example," The foil has a thickness of about 2o / u "The width of the polishing strips, however, is about 3 each" From the openings l _o l in the plastic cup 1 If the thin voice coil wires 2 _O 2 protrude, they are bent down and soldered to the foils 3. The ends 3 »1 of the foils protruding downwards over the cup are used for soldering on further lines»

Figure 2 shows another embodiment ο the plastic bowl is again designated with 1 «It has a recess 1.2 _O It leaves the converter system 2 free. 2 _O 3 there are openings in the transducer system with an insulating insert for the passage of the voice coil wires 2 _o 2 _e They are soldered to the ends 3 ° 1 of the foils 3 protruding upwards. At the lower ends, which in this case do not protrude, turn the continuing lines »In this figure, the membrane is again marked with 2 ₀ 1»

Fig »3 shows a variant of Fig. 2 as a special example»

The designations 1; 1 "2;2; 2 «1; 3> 3 »1 correspond to the designations in Figure 2« The foils 3 are injected into the plastic cup »Their protruding free ends 3d are used to connect the voice coil wires ο The continuing lines are placed ^{on the protruding ends 3» 2 «}

Figure 4 shows an example of another embodiment of the innovation proposal ο The two copper foils are again indicated by 3 are applied to a carrier film 3O3, z "B _o by gluing ο The carrier film can vary depending on the application purpose of a plastic film or insulating paper to be" the parts form a thin flexible strip conductor "such a band conductor is a highly advantageous component to the thin coil wires with the weiterfüh * · Governing switching elements Z ₀ Bo a matching transformer or a power cord to connect" the band leader can eg

p 691

glued or welded onto the plastic cup or the metallic magnetic head with its insulating film. It can be guided loosely or only fixed in places inside the housing shell or the housing. At the other end it is electrically connected to the further switching element and, if necessary, to this or the housing or a housing part ₍ \ ^ ch mechanically connected »It is irrelevant for the proposed innovation whether the carrier film of the strip conductor is self-adhesive on one or two sides or not at all. It has proven to be useful to only use self-adhesive foils on the leg side and, for example, to stick the carrier foil on this side »Such carrier foils can then be glued to the housing parts or to the transducer system by applying adhesive at the necessary points during processing»

Fig. 5 shows a further embodiment of the innovation proposal in a greatly enlarged section transversely to the longitudinal direction of a strip conductor. The conductor foils are denoted by 3 and the carrier, ftolie by 3 «3 °. The free side of the conductor foils 3 is ^m ^ - ^ of an insulating foil 3 <> 4, for example covered by gluing

The illustration shows the basic structure of a strip that is insulated on all sides. head «

Fig. G shows another embodiment of the proposed innovation ο It is a greatly enlarged section through a strip conductor according to Fig. 5 »but in a special design. Parts 3 5 3» 3 and 3 »4 correspond to the representation and description of Fig. 5 ° the insulating 3 "4" provided on its outer surface with a conductive cover 3 "52 It can be set if necessary to ground to the v $ h the sheets 3 line section formed statically protect ₀ in this Äusführungsbeispiel carries on the back of Carrier film 3 «3 is a metallic cover film, which is denoted by 3eil. If necessary, it can also be grounded. This strip conductor has the particular advantage that its actual conductor foils 3 have static protection on all sides. In many applications, at least one of the metallic cover foils can be dispensed with. «5«

Claims (1)

■ Πι J I J J J U UiU. Ul »R. 5 - S 69I (version of 24 _o Protection claims; 1 «see coil connector for the voice coil of an electroacoustici Converter to establish the conductive connection between the ends of the coil winding and the $ | further switching elements, for example connecting lines, transformers, plug strips or the like, characterized in that the coil connection part consists of thin, not rigid metal foil (3), which with a carrier material (1; 3 «> 3) mi * its contact surface is firmly connected, e.g. by gluing, welding, injection molding or the like » Coil connection for the voice coils of an electroacoustic transducer according to claim 1, characterized in that the thin metal foils (3) are attached to the outer surface of the Kunststoff ™ cup (1), which is the electroacoustic magnet system Converter surrounds " 3 <> coil connection part for the voice coil of an electroacoustic \ converter according to claim 1, characterized in that the thin metal films on a carrier film, Z are applied ₀ as paper or plastic (3O3), for example by gluing or welding, and thus a flexible Form strip conductor » 4t> Coil connector for the voice coil of an electroacoustic Converter according to claim 3ο characterized in that the band ter at least in the area of the coil connections with the electroacoustic transducer system (2) or its bowl (1) firmly ver is bound, e.g. by gluing or welding. 5ο coil connector for a dynamic microphone according to claim 3d or 4 °> characterized in that the thin metal foils are covered with a film (3 «4) on their free side» 6ο coil connection part according to one or more of the preceding claims, characterized in that the conductor foils are covered on at least one side with an insulated metallic cover foil (3o51j 3 ° 52)