JPH02102593U - - Google Patents

Description

[Brief explanation of the drawing]

1 to 3 respectively show a tremolo device for a stringed instrument according to an embodiment of this invention, FIG. 1 is a plan view thereof, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 1 is a partially omitted cross-sectional view taken along the line -, FIG. 4 is an enlarged cross-sectional view showing essential parts corresponding to the 1st, 3rd, and 6th strings of the tremolo device for the same stringed instrument, and 5th The figure shows the pitch change of each musical tone in numerical values (frequency) corresponding to the rotation angle during arming operation of each cam of the tremolo device for stringed instruments.
Fig. 6 is a curved graph showing the pitch changes of each tone in Fig. 5, Fig. 7 is a sectional view showing another embodiment of each cam of the tremolo device for the same stringed instrument, and Figs. 8 a and b. 9 is a cross-sectional view showing yet another embodiment of each cam of the same tremolo device, and FIG. 9 is a diagram showing the tension change of each string of the conventional tremolo device for stringed instruments as a pitch change of a musical tone in numerical values (frequency). FIG. 10 is a curved graph showing pitch changes of musical tones in FIG. 9. 1... Stringed instrument body, 2... Tremolo device for stringed instruments, 3-8... Strings, 14... String length adjustment member, 15
... String support fixing member, 16 ... Arming shaft, 1
7-22...cam, 32...string support member, 33...
...String fixing member, 34...One end of the string, 42...String fixing bolt, 45...Tremolo arm, 48, 49
...Balance spring.

Claims (1)

[Claims for Utility Model Registration] (1) The tension of multiple strings stretched on the main body of a stringed instrument is changed simultaneously on all strings using a tremolo operator that can be operated by arming, so that the pitch of the musical tone being generated can be adjusted to all strings. A tremolo device for a stringed instrument that is changed at the same time, comprising: a plurality of string support fixing members that support and fix one end of each string stretched on the stringed instrument body in a rotatable state relative to the stringed instrument body; an arming shaft that is rotatably attached to the main body of the stringed instrument and that rotates when the arming operation of the tremolo operator is performed; transmitting the rotational motion to each of the string supporting and fixing members in an independent transmission amount for each of the strings;
A tremolo device for a stringed instrument, comprising: a plurality of cams that independently and variably control the tension of each string. (2) Each of the string support and fixing members includes a substantially circular string support member that is rotatably attached to the stringed instrument body, and one end of the string wound around the outer circumferential surface of the string support member is connected to a string fixing bolt. The tremolo device for a stringed instrument according to claim 1, further comprising a plate-shaped string fixing member that is pressed against and fixed to the outer peripheral surface of the string support member with a tightening force. (3) The string support member is attached to a string length adjustment member that is attached to the main body of the stringed instrument so as to be movable in the direction in which the strings are stretched. tremolo device for stringed instruments. (4) The tremolo device for a stringed instrument according to claim (1), wherein the tremolo operator is attached to one end of the arming shaft. (5) Each of the cams contacts a string fixing bolt of each string support fixing member, and transmits the rotational movement of the arming shaft to the string support member of each string support fixing member via the string fixing bolt. A tremolo device for a stringed instrument according to claim (2) or (3). (6) The outer diameter shape of each of the cams is set such that the larger the wire diameter of the corresponding string, the greater the amount of rotational motion of the arming shaft transmitted to the string support fixing member. Claim number (1)
) The tremolo device for stringed instruments as described in item 1. (7) The tremolo device for a stringed instrument according to claim (6), wherein each of the cams is a tangential cam having the same minimum diameter and different maximum diameter depending on the wire diameter of the corresponding string. . (8) The tremolo device for a stringed instrument according to claim (6), wherein each of the cams is a tangential cam whose minimum diameter and maximum diameter differ depending on the wire diameter of the corresponding string. (9) The maximum diameter portion of each of the cams contacts each of the string support fixing members when arming up to a maximum, and the minimum diameter portion of each cam comes into contact with each of the string support fixation members when arming up to a maximum. A tremolo device for a stringed instrument according to claim (7) or (8). (10) The tremolo device for a stringed instrument according to claim (6), wherein each of the cams is an eccentric cam having a different amount of eccentricity depending on the wire diameter of the corresponding string. (11) A balance spring is attached to the arming shaft for biasing each of the cams disposed on the arming shaft to an initial position against the tension of the string. The tremolo device for stringed instruments described in paragraph (1). (12) When each cam is set at the initial position by the balance spring, each string supported and fixed by each string support fixing member is in a tension state where a predetermined open string pitch is produced. Claim No. (11) characterized in that
A tremolo device for a stringed instrument as described in .