Buzzer assembly

Details Buzzer assembly Buzzer assembly

1977-10-27

1979-01-23

Pitts, Harold I.

Communications: electrical

Audible indication

Ultrasonic pest control

340402, G08B 300

Patent

active

041363370

ABSTRACT:
An improved buzzer structure is designed for automated assembly and comprises a housing, a coil wound on a bobbin, a magnetic frame, and an armature mounted for reciprocating movement between a coil core and a diaphragm. The magnetic frame includes parallel side members which mate with parallel edges of the bobbin flange for guiding and orienting the bobbin as it is inserted in the preformed frame. The frame also includes parallel top and bottom members separated by an amount slightly in excess of the bobbin height so as not to restrict bobbin insertion. The bobbin has a coupled coil terminal which mates with an arch on the frame for providing an electrical connection therebetween. An area of light pressure contact between the bobbin and frame, and starting at an intermediate point of bobbin insertion, is provided for maintaining a fixed relationship between the bobbin and the frame after the bobbin has been inserted to a predetermined relationship with respect to the frame. Retaining the predetermined relationship permits movement of the subassembly comprising the frame and bobbin to a subsequent assembly station for further assembly operations.

REFERENCES:
patent: 4005413 (1977-01-01), Berns

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