| 摘要 |
AN ULTRASONIC SENSOR INCLUDES AN ULTRASONIC ELEMENT (1). THE ULTRASONIC ELEMENT (1) INCLUDES AN ULTRASONIC OSCILLATOR FOR SENDING, RECEIVING OR TRANSCEIVING ULTRASONIC WAVES, AN ELEMENT BODY (10) HAVING AN OPENING FOR PASSAGE OF ULTRASONIC WAVES FORMED ON ONE SURFACE, THE ULTRASONIC OSCILLATOR BEING ARRANGED WITHIN THE ELEMENT BODY (10), AND TERMINAL PORTIONS (11) PROTRUDING FROM THE ELEMENT BODY (10) TO FEED AN ELECTRIC CURRENT TO THE ULTRASONIC OSCILLATOR. THE ULTRASONIC SENSOR FURTHER INCLUDES A HOUSING (4) HAVING AN OPENING FORMED ON ONE SURFACE FOR COMMUNICATION WITH THE OPENING OF THE ELEMENT BODY (10). THE HOUSING (4) INCLUDES A RECEIVING PORTION (20) FOR RECEIVING THE ULTRASONIC ELEMENT (1) AND A POSITIONING PORTION (20B OR 20C) INTEGRALLY FORMED WITH THE RECEIVING PORTION (20) TO POSITION THE ULTRASONIC ELEMENT (1) IN PLACE. THE ULTRASONIC SENSOR INCLUDES A PRINTED WIRING BOARD (5) ARRANGED TO INTERPOSE THE ULTRASONIC ELEMENT (1) BETWEEN THE PRINTED WIRING BOARD (5) AND THE RECEIVING PORTION (20). THE TERMINAL PORTIONS (11) OF THE ULTRASONIC ELEMENT (1) ARE MOUNTED TO THE PRINTED WIRING BOARD (5). |
