JPH0337033Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to the improvement of the key mechanism of a bass clarinet, and more specifically, to the improvement of the key mechanism of a Boehm type clarinet.

(Prior Art) Generally, examples of low-pitched clarinets include alto clarinet, bass clarinet, contra clarinet, and basset horn.

The conventional key mechanism of this type of bass clarinet,
In particular, the key mechanism including the pad that opens and closes the tone hole required for producing the A/E, Bb/F, and B/F# notes has the configuration shown in Figure 3. It has been known.

In the figure, 1 is a lower pipe (lower joint), and at the end of the lower pipe 1 on the connection side with the upper pipe (upper joint), there is a sound hole for A/E sound and a key 3 to open and close it. , Bb/F sound holes and pads 5 for opening and closing them, and B/F# sound holes and pads 7 for opening and closing them are provided in a line.

Although not shown, there is a register key on the upper pipe, which is unique to the clarinet; when you press the register key, the same finger produces a note 12 degrees higher. In other words, when playing, the index finger of the right hand presses pad 7, and the middle finger of the right hand presses pad 5, but when both pads 7 and 5 are pressed at the same time, an A sound is produced, and when the register key is opened, an A sound is produced. than the sound
This produces an E note 12 degrees higher.

By the way, each of these sounds tends to produce a muddy sound similar to a throat sound.

Here, the throat sound refers to the middle range that moves from the siyariyumo range to the clarion range. The reason why it is called the throat tone is because the tone hole is created between the octave above the fundamental tone and the second harmonic, in other words, at the throat of the instrument, where vibrations are difficult to stabilize.
The sound is missing and the ringing is bad.

(Problems to be solved by the invention) However, in the key mechanism of such a conventional bass clarinet, each of the notes A, Bb, B,
and E, F, obtained by operating the register keys.
As mentioned above, when pronouncing each note of F#, there was a problem in that the sound output was poor and a muddy sound similar to a throat sound was produced.

(Means for solving the problem) Therefore, the present invention provides a small hole in the vicinity of the tone hole that is opened when a throat-like musical sound is generated, and a small hole opening/closing tampon is provided in the tampo of the opening/closing mechanism of the tone hole. The object of the present invention is to solve the above-mentioned problems by providing a key mechanism for a bass clarinet in which the keys are interlocked.

(Operation and Effect) The key mechanism of the bass clarinet according to the present invention is as follows:
Sound waves are also radiated through small holes provided near the tone holes that are opened when throat-like musical sounds are generated.
The sound emission characteristics will not deteriorate. Therefore, throat-like musical tones are no longer generated.

(Example) Hereinafter, an example of a key mechanism for a bass clarinet according to the present invention will be described based on the drawings.

FIGS. 1 and 2 are diagrams showing an embodiment of a key mechanism for a bass clarinet according to the present invention.

In these figures, 11 is a lower tube, and this lower tube 11 has three tone holes 13, 15,
17 are arranged in a line along the axial direction.

Each of the sound holes 13, 15, 17 is opened and closed by pads 31, 33, 35 which are swingably supported on the pipe body 11 via key rods 21, 23, 25, respectively. 35 are each operated by separate fingers. For example, the pad 31 is operated by the index finger of the performer's right hand, and the pad 33 is operated by the middle finger of the right hand.

The sound hole 13A is for A/E sound. In other words, when both pads 31 and 33 are closed and the register key (not shown) is closed, the A sound (A sound) is produced.
Alternatively, if they are closed together and the register keys are opened, an E sound (two-point E sound) can be obtained.
Similarly, the sound hole 15 is for Bb/F sound. In other words, if you close the pad 31, open the pad 33, and close the register key (not shown), you will hear a Bb sound (B flat sound), or if you close the pad 31, open the pad 33, and open the register key, you will hear the F sound. (two-point F) are obtained respectively. Furthermore, the sound hole 17 is for B/F# sound. That is, if you open the pad 31, close the pad 33, and close the register key (not shown), you will hear a B sound (B sound), or if you open the pad 31, close the pad 33, and open the register key, you will hear an F# sound ( 2 points) are obtained respectively.

Here, the sound hole 17 is located on the side of the sound hole 17.
A small hole 40 whose opening area is smaller than that of the sound hole 17 is formed adjacent to the sound hole 17 . This small hole 40 is opened and closed by a pad 41. The tampo 41 is integrally fixed to the tampo 31 that opens and closes the tone hole 17, and when the player presses the tampo 31 with his right index finger, it works in conjunction with the tampo 31 to close the small hole 40 at the same time. It is something.

In the bass clarinet having the above configuration, when playing while holding down the pad 31, the small hole 4
The pad 41 for opening and closing 0 is also interlocked with this.

When the tone hole 17 is opened by releasing the pressure on the pad 31, the small hole 40 is also opened at the same time. As a result, the opening area increases as a whole, the sound emission characteristics improve, and clear sound can be obtained.

[Brief explanation of drawings]

FIG. 1 is a partially enlarged front view showing an embodiment of the key mechanism for a bass clarinet according to the present invention, and FIG. 2 is a front view showing the lower pipe of the key mechanism according to the same embodiment. FIG. 3 is a partially enlarged front view showing the key mechanism of a conventional clarinet. 17...Sound hole, 31...Tampo, 40...Small hole, 41...Tampo.

Claims (1)

[Scope of utility model registration request] A key mechanism for a bass clarinet, characterized in that a small hole is provided in the vicinity of a tone hole that is opened when a throat-like musical sound is generated, and a tampo for opening and closing the small hole is interlocked with a tampo of an opening/closing mechanism for the tone hole.