Ultrasonic generator

• Main Author: Kim, Seog-tae
• Format: Patent
• Language: English
• Published: 01.09.2020
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; AGRICULTURE; ANIMAL HUSBANDRY; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUSPLANTS; CATCHING, TRAPPING OR SCARING OF ANIMALS; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; FISHING; FOR PERFORMING MECHANICAL WORK IN GENERAL; FORESTRY; GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL; HUMAN NECESSITIES; HUNTING; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PERFORMING OPERATIONS; PHYSICS; PUBLIC ADDRESS SYSTEMS; SOUND-PRODUCING DEVICES; TRANSPORTING; TRAPPING

The present invention relates to an ultrasonic generator for repelling harmful animals. The invention comprises a columnar ultrasonic wave generating body 18 which has a piezoelectric element 16 and a connecting body 22 and a smaller-diameter connecting body 24 each having a reduced diameter, a diaphragm 28 which is in the form of a speaker horn, and a connecting rod 26 which extends from the ultrasonic wave generating body 18 and connects and fixes the diaphragm 28 to an end thereof. The thickness of the diaphragm 28 gradually decreases from the base 34 connected to the connecting rod 26 toward an outer edge of the diaphragm 28 and one or more undulated portions 36 are formed concentrically on the front face of the diaphragm.