JPS614100A - Tremolo mechanism for guitar - 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 (Field of Industrial Application) The present invention relates to a tremolo mechanism for a guitar that temporarily and gradually weakens the tension of strings during a performance to apply a tremolo.

(Prior Art) Conventionally, as shown in FIG. 2, a tremolo mechanism for a guitar consists of an end plate 4 to which a bridge 1 and a locking part 3 of a string 2 are integrally attached, which is rotatable about a fulcrum 5. After installation, the end play is 1.40 rotations by pushing the tremolo arm 7 against the H force of the spring 6; then, gradually loosen the tension on the string 2 and apply tremo D. FENDER type 1
~ There is a lemon n mechanism.

In this case, the bridge 1 is inclined t'j so that the sixth string 2-6 is slightly longer than the first string 2-1, as shown in FIG. In other words, when string 2 is pressed, the first string 2-1, which has a thin string, touches the fingerboard 8 at the position where it is pressed, but the sixth string 2-6, which has a thick string, cannot be pressed firmly ( If you press the fingerboard 8 in a round shape from the pressed position,
This is because the length of the string that goes from I to J to each scale is shortened by touching it in a round shape (because bridge 1 is tilted to compensate for J, tremolo arm 7 is pushed) However, the 6th string 2-6 has greater slack than the 1st string 2-1, but the 1st string 2-1, which has less slack, has a small wire diameter, so it has a large elongation and the change for the slack m. The sensitivity of the scale change is small, and therefore the scale change is small, for example, 2 to 3 degrees, for the same amount of grain, whereas the 6th string has a large slack.
~6 has a large wire diameter, so the elongation rate is small, and the sensitivity to the scale change of J for the gentle M is very high. Therefore, the scale change is large, for example, 6 to 7 degrees for the same amount of rice. Not only does the tremolo arm 7 (press the tremolo arm 7) cause the upper opening effect to differ depending on each string, but the I remolo effect on the commonly used 1st to 3rd strings is weak, and on the contrary, the 6th string has a weak tremolo effect. Rather than having a great effect, it had the disadvantage that the strings were too loose and prone to outtuning, and therefore the tremolo could not be changed with chords.

As a countermeasure against this problem, as shown in Fig. 4, screws 10 are used to secure the top part of the body of the guitar to the shell 9 of the guitar body.
1 is provided with a rotor 15 that rotates around the shaft 1/I by the pushing force of the arm 13 against the biasing force of the spring 12. By removing the locking part 17 that locks the end of the string (t L: J, and each string 16 is supported by a bridge roller 18 whose position is fixed), the rotor 1 due to the pushing of the heremo lower l\13
There is a Koehler type that displaces only the locking part 17 by turning 5 to apply a tremolo.

In this case, since the position of the bridge row 518 is constant (), it is possible to keep the amount of paddy on each string 16 constant by pushing the tremolo arm 13, but the amount of paddy is changed according to the elongation rate of each string 16. Therefore, there was a drawback that the tremolo effect of each string 16 could not be made the same.

(Problems to be Solved by the Invention) The present invention provides an appropriate remolo effect that corresponds to changes in the wire diameter, elongation, I quality, etc. of each string, or to the player's preferences. be.

(Means for Solving the Problems) As shown in FIG. In order to apply the tremolo, the tremolo is applied between the bridge 24 attached to the upper shell 22 that supports each string 23 and the locking part 25 that locks the end of each string 23 against the elastic force. A guitar tremolo machine is provided on the side 29 of the guitar tremolo machine, which is provided with a pressure contact rli till variable device 28 that rotates around a shaft 27 by pushing an arm 26 to change the pressure contact distance between the center of the jd+ 27 and the string 23. .

(Function) When the tremolo arm 26 is pushed against the elastic force, the pressure contact distance variable device 28 rotates around the shaft 27, and as the pressure contact distance variable device 28 rotates, the pressure contact distance variable device 28 is pressed against the pressure contact distance variable device 28. As a result, the distance between each chord 23 and the center of the shaft 27 on the pressure contact surface changes by an arbitrary amount and at an arbitrary rate of change for each chord 23, for example, according to an arbitrary curve formed on the pressure contact surface. Appropriate tremolo effects 19 can be created for each string 23.

(Embodiment) Next, the configuration of an embodiment of the present invention will be described with reference to FIGS. 5 to 11.

The front and rear plates 3 are provided on the body shell 31 of the electric guitar 30.
2. Left and right frame parts 3 integrally formed with 33
4.35 is attached with four screws 36, and a tension roller 40 for each string 39 is attached to the front plate part 32 via a tension bracket 38 attached to a bridge joint 37, with a tension roller 40 centered on a shaft 41. In addition to being rotatably mounted, a bridge roller 44 for each string 39 can be adjusted up and down via a screw 45 via a bridge post 43 connected to the bridge joint 37 with a pin 42, and the bridge joint 37 can be moved back and forth ( It is attached so that its position can be adjusted back and forth by tightening screws 46 in the left and right directions in FIG.

On the other hand, between the left and right frame parts 34 and 35, there is a rotation shaft 48, which also serves as a torsion spring, passing through a cylindrical main rotor 47 whose one end is rotatably supported by the right frame part 35, and a spring shaft 48, hereinafter abbreviated as "spring shaft". is supported by the left frame portion 34 via a cam plate 49, and the other end of the cam plate is attached to the main rotor 47 with a pin (not shown) integrally connected to the main rotor 117. Adjustment piece 5
0 is rotatable around a pin 51 and is attached to each string 39 separately by a screw 52 so that the distance from the axial center of the spring shaft 48 to the pressing surface 53 of each of the three strings can be adjusted, and the bend adjustment piece 50 The pressure contact surface with 39 is main 1]-Y47
It is formed, for example, in an arbitrary oval curve so that the pressure contact distance from the center of the spring axis/18 axis to the pressure contact position of the string 39 gradually decreases at an arbitrary rate of change by rotating counterclockwise in FIG.

(This j: The 77I intuner frame 54 is attached to the main rotor 47 with the sea urchin bend adjustment piece 50 attached with the screw 55.
The fine tuner frame 54 has a tremolo arm 5 which rotates the main rotor 47 counterclockwise in FIG. 8 against the force of the spring shaft 718.
6 is attached to the end of each string 39, and the locking position can be adjusted in the front and back direction with the bobbin-shaped bead 57 supported by the conical piece receiver 58. A fine tuner device 59, that is, a tuner nut with a mounting number attached to a tuner rod 63 articulated with a pin 62 at the tip of a separate tuner arm 61 for each string, which forms a piece receiver 58 and is rotatable about a pin 60. A fine tuner device 59 is attached that adjusts the tension of each string 39 by changing the locking position by turning the string 64 left and right.

In this case, as shown in FIG. 10, the piece receiver 58 that supports the bobbin-shaped end piece 57 at the end of the string 39 is formed into a conical shape, so that the end piece 57 that is inserted into the piece receiver 58 is Even if the position of the end piece 57 is in any vertical, horizontal or diagonal position, the tension of the string 39 of tuning 1 can be kept constant and the string 39 can be positioned at the center of the cone. When the string 39 moves in any direction (up, down, left, right, etc.), for example, the problem of the string 39 breaking due to contact with the tuner arm 61 is eliminated.In particular, when the tension of the string 39 changes due to the use of tremolo during performance, the end The posture of the piece 57 is easy to change, and in that case, there is an effect that a stable tuning state can be maintained.

Note that 65 is a fine corner force bar on the top surface of the fine tuner device 59.

Next, the operation of this embodiment will be explained.

In the tremolo mechanism 66 configured in this manner, the pressure contact surface 53 of the bend adjustment piece 50 for each string 39 with the string 39 is moved from the rotation center of the main rotor 45 to the pressure contact surface 53 by the rotation of the main rotor 47 by the tremolo arm 56. For example, the distance change (81> in FIG. In combination with 82) in Figure 11, each string 39 can be made into an arbitrary oval curve that changes by 1 degree of 81Il!i, and in this case, -9
= The tremolo can be changed by a chord, and by arbitrarily forming the pressure contact position or the curve of the pressure contact surface 53, the tremolo effect depending on the push 1j + angle of the tremolo arm 56 can vary in angle position. Also, by attaching the tremolo arm 56 to the screw holes 67 at symmetrical positions of the fine tuner frame 54, it can be easily made for left-handed users. Alternatively, the fine tuner device 59 can be attached to the fine tuner frame 54 and attached to the rear plate portion 3 without being attached to the fine tuner frame 54.
In this case, the tension change for each string 39 by pushing the tremolo arm 56 can be made even larger.

(Effects of the Invention) The present invention is arranged between the bridge of the upper part of the body of the guitar and the first part of the stringer, and the center of the shaft that rotates due to the pushing of the tremolo arm, and the strings are pressed against the center of the shaft by the T-J attached to the shaft. For example, the pressure contact distance with the bend control valve 50 can be arbitrarily changed, and this can be used to adjust the diameter, elongation, material, etc. of each string, or to adjust the distance to suit the player's individual preferences. , 7J 4: h [There is an effect that can reduce the mouth effect by 19.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the entire structure of the present invention, Fig. 2 is a broken side view of a road body of a conventional embodiment, Fig. 3 is a front view of the road body, and Fig. 4 is a diagram of a conventional road body embodiment. 5 is a front view of the entire embodiment of the present invention, FIG. 6 is a perspective view of the tremor I mechanism, FIG. 7 is a side view of the main part of A, and FIG. 8 is the main part. FIG. 9 is a front view of the main part, FIG. 10 is an explanatory diagram of the main part, and FIG. 11 is an explanatory diagram of the operation. 20... Guitar - 21... Head 2
2... Front shell 23... String 24...
・Bridge 25...Latching part 26...
l~1 Nomolo arm 27... Shaft 28... Pressure button head variable device 29... Tremolo mechanism

Claims (4)

[Claims] (1) In order to apply tremolo by temporarily changing the tension of the strings stretched between the head of the guitar and the upper part of the body, there is a bridge that supports each string attached to the upper part of the guitar, and each string is attached to the upper part of the guitar. A tremolo arm is pressed against an elastic force to rotate around a shaft and change the pressure distance between the center of the shaft and the string. A tremolo mechanism for a guitar characterized by being provided with a distance variable device. (2) The guitar according to claim 1, characterized in that the pressure contact distance between the shaft center and the string by the pressure contact distance variable device and the change in the pressure contact distance by pressing the tremolo arm can be adjusted for each string. tremolo mechanism. (3) A guitar according to claim 1 or 2, characterized in that the shaft and the pressure contact distance variable device are integrally attached so that the tremolo arm is pushed against the torsional force of the shaft. tremolo mechanism. (4) The guitar tremolo mechanism according to claim 1, 2, or 3, wherein the string locking portion is displaced together with the pressure contact distance variable device.