摘要:
The present disclosure relates to a buckle with a whistle that may include: a plug member having lock arms extending forward from both sides of a base and a guide rod extending forward from the base in such a way as to be located between the lock arms; and a socket member having a chamber open on the front end thereof by means of an upper plate and a lower plate located to face each other so that the socket member is coupled to the plug member, the chamber is allowed to accommodate the guide rod therein, wherein the guide rod is configured as the whistle, and when the plug member is coupled to the socket member, the whistle is accommodated in the chamber.
摘要:
When a whistle (1) is blown, whistle information is created in the whistle. A lamp device (2) receives a radio signal transmitted from the whistle (1), demodulates the whistle information, and performs lamp lighting in accordance with the intensity of the whistle sound based on the whistle information. Thus, it is possible to notify that the whistle has been blown and its intensity through visual perception. Thus, even a person having auditory difficulties can know that the whistle has been blown and can concentrate on the playing at ease.
摘要:
A combination whistle comprising a body (1) provided at each end with a mouthpiece (3',6) having an air passage which communicates with a sound chamber (4,5), the chambers each being provided with a vent (V 1 , V 2 ) in which is located an air splitter arranged so that air blown into the chamber through the associated mouthpiece is directed to the air splitter. The two vents (V 1 ,V 2 ) open at opposite sides of the body (1) so that the whistle can be blown from either end with the associated air vent exhausting in an upward direction without the need when changing ends to turn the whistle about a vertical axis. One of the sound chambers (5) contains a pea and is provided with a protuberance (3c) arranged to project into the associated vent (V 2 ) to prevent the pea becoming stuck in the vent. This chamber is of conical shape at one end.
摘要:
An ultrasonic transmitter and methods for making the same. A plurality of blocks (24, 26) are provided and are formed such that, when they are coupled together, they form at least one ultrasonic whistle (22) in fluid communication with a manifold (2) and an acoustic horn (8).
摘要:
An apparatus for generating a noise sound, which is equipped in industrial electric cars with little or no driving sound and generates an appropriate amount of noise sound so that the nearby cars or pedestrians can notice their approch in a narrow pathway or stock room. The apparatus has a cornical air collector (1) installed in the car, a shutter (5) installed rotatably in the air collector (1) and controls the flow amount of air passing through the air collector (1), and a U-shaped tube (4) installed apart by a predetermined distance from a small diameter portion (9) of the air collector (1) and generates the noise sound by the air discharged from the air collector.
摘要:
Die Erfindung betrifft eine elektronische Alarmvorrichtung (10), insbesondere für Fahrzeuge (12), die Ultraschallgeräusche (14) erzeugt, um Tiere (3) davon abzuhalten, in die Fahrbahn des Fahrzeugs zu laufen. Die Vorrichtung besteht im wesentlichen aus einem einfachen Treiber- oder Ansteuerungsmechanismus (20) zum Erzeugen von elektrischen Impulsen (83) mit Rechteckwellenform und konstanter Amplitude. Der Treiber (20) erzeugt die Rechteckwellen mit periodisch ansteigenden und abfallenden Frequenzen. Die Rechteckwellen werden von einem Koppeltransformator (31) in elektrische Sinuswellen (100) mit großen Spitze-Spitze-Spannungen umgesetzt und einem piezo-elektrischen Wandler (36) zugeleitet, der diese in Ultraschallgeräusche umsetzt, die abwechselnd ansteigende und abfallende Frequenzen haben, wodurch ein Heulton ähnlich einer Sirene erzeugt wird. Dabei besteht für den Wandler (36) keine Überhitzungsgefahr oder Gefahr vorzeitigen Ausfalls. Der Ultraschallheulton verwirrt das Tier und verhindert, daß es in die Fahrbahn des Fahrzeugs läuft. Dabei wird das Tier weder verletzt noch sein Gehör beeinträchtigt.