JPS59191099A - Pickup mounting construction for musical instrument having acoustic body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a pink-up part mounting structure for outputting the musical sounds of musical instruments such as guitars, violins, and banjos having acoustic bodies to the outside as electrical signals.

(Prior art) Conventionally, for example, in the case of a guitar with a pickup, the first
As shown in the figure, a saddle 2 supporting a string 1 is inserted into a groove 5 formed in a piece 4 on an upper shell 6 via a piezoelectric element 6.
The pressing force due to the tension of the string 1 is transmitted to the piezoelectric element B via the saddle 2. In this case, in order to easily transmit the vibration of the string 1 to the piezoelectric element 6, the saddle 2 is generally
45 is inserted relatively loosely.

Therefore, each string 1 in the normal supporting state shown in Fig.
Even if the output sensitivity of the piezoelectric element 6 is adjusted to a predetermined pattern, the saddle 2 may tilt due to changes in the tension of the string 1, even if it is oriented as shown in FIG. In this case, the contact between the saddle 2 and the piezoelectric element B changes from surface contact to line contact, and the sensitivity of the piezoelectric element B changes. Since the width of the electrode part of the element 6 itself is narrower than the width W of the saddle 2, the line contact part with the piezoelectric element 6 separates from the piezoelectric element 6, the sensitivity decreases greatly, the balance of the sensitivity goes out of order, and the piezoelectric in the groove 5 Due to the loose installation of the element A, the piezoelectric element 6 vibrates due to the vibration of the front A and A due to the speaker sound during performance, causing howling, which cannot be prevented.
Each string 1 from each piezoelectric element 6 as shown in Figure 6 A, B, (!
The signal polarity of the separate vibrations is changed so that the outputs from the entire piezoelectric element 6 caused by the front A and B vibrations cancel each other out, but as mentioned above, due to changes in the tension of the string 1, etc. When the contact point changes, the balance of polarity reversal becomes unbalanced and howling is likely to occur, and overall there are disadvantages such as difficulty in adjusting the sensitivity, or sensitivity being unstable and easy to change even after adjustment. .

(Objective of the Invention) The present invention provides a pressure sensor that is attached almost integrally with the acoustic body by holding its outer periphery, and is divided into any number of strings. By providing a pickup mounting structure for a musical instrument with an acoustic body that can maintain a constant contact state, it is possible to easily adjust the sensitivity of the pressure sensor for each string, increase the stability of the sensitivity, and eliminate howling. The aim is to significantly reduce the occurrence of

(Structure of the Invention) As shown in FIG.
A groove 12 is formed along each string 11 supporting position of the upper bridge 10 of the front shell 9, and a frame 14 is inserted into the groove 12 via a pressure sensor 16 for detecting the vibration of each string 11. , and a saddle 1 that contacts the strings 11 in a guide groove 15 divided into an arbitrary number of strings 11 at the string 11 position of the frame body 14 and transmits the suppressing force due to the tension of the strings 11 to the pressure sensor 16.
This is a pickup part mounting structure of a musical instrument having an acoustic body in which the arbitrary number of strings 11 are individually inserted.

(Embodiment) FIGS. 5 to 7 show an embodiment of the present invention, in which a bridge 18 attached to an upper shell 17 forming the entire acoustic body of the guitar has a bridge 18 along each string 19 supporting position 14. A groove 2° is formed in which a pressure sensor is installed to detect all the vibrations of each string 19;
For example, a pressure sensor 22 includes a pie-self type piezoelectric element 21 in which a silver electrode is attached in a full vacuum to a ceramic made of zirconate lead tannate (Ztp), and protected by an insulating material and a brass case.
The frame body 26 is inserted through the frame body 26, and in the inserted state, the pressure sensor 22 is pressed around its periphery against the shell shell 17 by the frame body 26, and is attached almost integrally to the shell shell 17.

The string 19 of the frame 26 attached to the bridge 18 in this way
An arbitrary number of guide grooves 24 are formed at the positions, in this embodiment, each string 19 is divided into guide grooves 24.
Pressure sensor 22 detects the pressing force due to the tension of dazzle 19 in contact with
The width of the piezoelectric element 21 allows the saddle 25 to be transmitted to the guide groove 2.
4, it is inserted so that it can move up and down without tilting.

Therefore, even if the tension of the string 19 changes in this installed state, the saddle 25 does not tilt and maintains surface contact with the pressure sensor 22, so the sensitivity does not change in the initial adjustment state, and the pressure sensor Since the strings 22 are almost integrated with the upper shell 17, the slight movement of the outer shell 17 is less likely to occur, so howling can be greatly reduced, and the height of each string 19 can be adjusted by replacing the saddle 25 or closing the saddle. It can be easily adjusted by

The relationship between each string 19, the pressure sensor 22, and the saddle 25 including the 6th and 12th strings can be made to correspond, for example, as shown in FIGS. 8A to 8F.

(Effects of the Invention) In the present invention, the pressure sensor is mounted almost integrally with the acoustic body with its outer periphery held down by a china clay frame, and the saddle is applied to each string individually through a guide groove formed in the frame. Since they are in contact with each other, the width of the saddle and pressure sensor can be reduced, resulting in a stable sound with good sound and no unevenness.

[Brief explanation of drawings]

Figures 1 and 2 are 11 views of the road body fracture diagram of the conventional embodiment, Figure 3 is an explanatory diagram thereof, Figure 4 is an overall configuration diagram clearly showing the configuration of the present invention, and Figure 5 is a wooden block diagram. 6 is a plan view thereof, FIG. 7 is a cutaway side view thereof, and FIG. 8 is an explanatory diagram showing the relationship between the string 19, pressure sensor 22, and saddle 25. be. 7...Ontoma body 8...Musical instrument? ... Upper shell 10... Piece 11... Strings
12... Groove 16... Pressure sensor 14.
...Frame 15...Guide groove 16? ...Saddle applicant piece 1) Hitoshi representative Patent attorney Oka 1) Hidehiko

Claims (1)

[Claims] A groove is formed along each string support position of the upper bridge of a musical instrument having a sound tube body, and a frame body is inserted into the groove via a pressure sensor for detecting the vibration of each string, and A guide groove divided into an arbitrary number of strings is formed at the string position of the frame body, and the arbitrary number of saddles are provided in the guide groove for contacting the strings and transmitting a pressing force due to the tension of the strings to the pressure sensor. A mounting structure for a pickup part of a musical instrument having a sound @ body, which is characterized in that each string is inserted separately.