1. Field of the Invention
The present invention relates to a manual tubular bell structure, and more particularly to a manual tubular bell structure able to set different audio frequencies for people to perform.
2. Description of the Prior Art
A manual tubular bell is an instrument able to sound “jingle”. A conventional manual tubular bell comprises a pipe. The bottom of the pipe is sealed to form a “resonance box” configuration. The pipe is provided with a striker which is able to swing. The striker has a striker head. The user can hold the pipe and swing the pipe, so that striker is swung with the striker head to strike the pipe to sound “jingle”. The conventional structure has some shortcomings. There is no configuration to change its audio frequency. It just sounds a single audio frequency. It is unable to set different audio frequencies quickly. For a different audio frequency, it is necessary to change the thickness of the pipe. That is to say, the pipe must be in a different thickness for a different audio frequency. It is not easy to precisely set an audio frequency by using a steel pipe of a different thickness. A high tech apparatus is required to test the product, so the manufacture cost is high. Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems.
The primary object of the present invention is to provide a manual tubular bell structure to improve the shortcomings of the prior art. The manual tubular bell structure of the present invention comprises a pipe with a handle sleeve to seal the bottom of the pipe. The handle sleeve has an audio frequency setting hole. The audio frequency setting hole can be in different diameters to set different audio frequencies. The pipe has an audio frequency setting trough. The audio frequency setting trough can be in different lengths/widths to set different audio frequencies. The present invention can use the pipe of the same material and thickness to set different audio frequencies. Therefore, people can use several pipes with different frequencies to perform.
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.
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As the aforesaid, the present invention can use the pipe of the same material and thickness, through the handle sleeves 13 with the audio frequency setting holes in different diameters, to set different audio frequencies. Therefore, people can use several pipes with different frequencies to perform, not with a single audio frequency.
Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.