JPS599275Y2 - Pickup device for electric string instruments - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a pickup device for an electric stringed instrument.

Conventionally, this type of device has a tuning pin C and a hitch pin d between a pair of string pillows a and l) as shown in Figures 1 and 2.
A string e is stretched on a frame f, a piezoelectric element g is interposed between one string pillow b and the frame f, and the string vibration is extracted as an electric signal from the piezoelectric element g via the string pillow b. Things are known.

In this case, the string e is largely bent especially at the string pillow b and frictionally engages with it, and the tensions before and after the string pillow b are different and become equal over time, so the pitch changes. Blackness occurs.

In addition, as shown in the second figure, the direction of the resultant force F of the tension forces T and T acting on the string e with the string pillow b as a boundary is deviated by 0 degrees from the perpendicular H passing through the frame f and the piezoelectric element g, and is uneven on the piezoelectric element g. As a result of the applied pressure, the piezoelectric element g may be damaged, making it difficult to faithfully convert string vibrations into electrical signals.

The object of the present invention is to provide a pickup device that does not have such drawbacks, and a locking member 4 having a locking portion 3 on the front end 2 is connected to the front end 2 so as to face the tuning pin 1. It is separated from the frame b and tied to the frame 6 at the root part 5, and a string 9 is stretched between the tuning pin 1 and the locking part 3, and the front end part 2 of the locking member 4 and the root part 5 are connected to each other. A piezoelectric element 7 is provided between them.

The locking portion 3 shown in FIGS. 3 and 4 is shaped like a protrusion, and the locking portion 3 shown in FIG. 5 is shaped like a U-shaped groove.

The piezoelectric element 7 may be buried as shown in FIGS. 3 and 4, or may be attached to the outer surface as shown in FIG.

In FIGS. 3 to 5, 8 is a string pillow on the tuning pin 1 side, 9 is a string whose both ends are wound around the tuning pins 1, 1, and the middle part is engaged with the locking part 3, and 10 is a string that is engaged with the locking part 3. A bolt that connects the fastening member 4 to the frame 6 is shown.

Thus, when the string 9 is set to a desired tension and is struck to vibrate, the locking member 4 vibrates due to the vibration, giving strain vibration to the piezoelectric element 7, which is extracted as an electrical signal.

Note that by appropriately selecting the material of the locking member 4, vibration damping can be achieved as desired.

In this way, according to the present invention, the locking member 4 having the locking part 3 on the front end 2 is tied to the frame 6 with the front end 2 separated at the root 5, and the front end 2 and the root 5 are connected to each other. Since the piezoelectric element 7 is installed between the string and the string, unlike conventional devices, the tension of the string does not fluctuate, and the desired vibration can always be applied, and no initial pressure is applied to the piezoelectric element 7. As a result, string vibrations can be faithfully converted into electrical signals over a long period of time without distortion or damage.

[Brief explanation of drawings]

Fig. 1 is a cut-away side view of the conventional device, Fig. 2 is an enlarged view of a part thereof, Fig. 3 is a cut-away side view of the implementation of the present invention, Fig. 4 is a perspective view of a part thereof, and Fig. 5 is a cut-away side view of the conventional device. FIG. 7 is a perspective view of another embodiment. 1...Tuning pin, 2...Front end, 3...
Locking part, 4... Locking member, 5... Root, 6... Frame, 7... Piezoelectric element.

Claims (1)

[Scope of utility model registration request] A locking member 4 having a locking portion 3 on its front end 2 facing the tuning pin 1 is fixed to the frame 6 at the root portion 5 with the front end 2 separated from the frame 6, and is connected to the tuning pin 1. A string 9 is stretched between the locking part 3 and a piezoelectric element 7 is provided between the front end 2 and the root 5 of the locking member 4 to pick up vibrations of the string 9. pickup device.