JPS6246225Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tremolo device for a guitar, which is installed in the tailpiece (string holding part) of an electric guitar or the like, and changes the tension of the strings by operating a lever to change the sound.

As shown in the cross-sectional view of FIG. 1, a conventional tremolo device for an electric guitar has a string holder 1 equipped with a bridge that supports the strings and functions as a bridge, placed over a through hole provided in a body plate 2 of the guitar. Mounted swingably on the
The lower end of the string holder 1 was pulled from the front inside the through hole 3 by a coil spring 4, and a lever 6 was attached to the rear of the string holder 1. The front part 1a of the flange part of the string holder 1 is formed with a curved lower surface, and this part is loosely fastened with a wood screw 5, and a coil spring is attached to a recess bored from the back side of the body plate 2. 4 strongly urges the lower part of the string holder 1 forward, the string holder 1 is positioned horizontally above the through hole 3 by overcoming the forward pulling force of the string. Then, by applying a force to tilt the string holder 1 forward using the lever 6,
The string holder 1 has a structure in which it overcomes the biasing force of the coil spring 4 and swings forward about the wood screw 5 as a fulcrum, and changes the sound by changing the tension of the string 7.

However, in a tremolo device with this structure, the string holder 1 is loosely attached directly to the body plate with wood screws so that it can swing, so the attachment may become unstable. It is necessary to attach the coil spring 4, which has drawbacks such as difficult assembly work and a large number of man-hours for processing and assembling. Additionally, since the swinging fulcrum of the string holder is located at the front, the string support moves up and down when the lever is operated, which changes the height of the string and adversely affects the force of the fingers holding down the string. I was afraid.

This idea was made in order to eliminate the above-mentioned drawbacks.The string holder can be stably attached to the body plate and the structure is solid, and the device can be easily assembled, and when the lever is operated. To provide a tremolo device for a guitar that can perform tremolo performance well without changing the height of strings much.

Hereinafter, embodiments of this invention will be described based on the drawings.

Figure 2 is a plan view of the tremolo device (tailpiece with tremolo mechanism), Figure 3 is a right side view of the same,
FIG. 4 shows a front view of the same. Reference numeral 10 denotes a base, which has a recess formed in its upper part to pivotally support and store a string holder 11, which will be described later, and a spring chamber 12 in its front lower part to store a compression coil spring.
a, 12b are provided, and a protrusion 13 into which the base of the lever is inserted is formed at the rear lower part. Furthermore, shafts 14a and 14b for pivotally supporting the string holder 11 are fitted horizontally into both sides of the substantially center of the base 10, and the string holder 11, which is housed in the recess on the base, is centered approximately at the center of the shaft 14a. , 14b so as to be swingable.
A screw hole 16 for screwing to the body plate 15 of the guitar is provided in the center of the base 10. A lever 17 is rotatably screwed into the rear part of the string holder 11 by bending the front part upward, and the front part has a string insertion hole 1 into which six strings 18 are inserted and the ends thereof are held.
9 are arranged at regular intervals, and the rear wall portion 2
0 is provided with six holes 21 arranged in parallel for screw insertion, which adjustably hold a piece 22, which will be described later. string 18
6 pieces 22 that can adjust the height and tension of the
As shown in FIG. 6, an insertion hole 23 for the string 18 is provided which extends from the lower part of the front to the middle part, and then from the middle part to the upper part, and two height adjustment screws 24 are passed through the front part vertically. A string tension adjustment screw 25 is screwed into the rear part of the string so that it can be rotated vertically. That is, a rotation shaft 22a that is thick in the lateral direction is fitted into the rear part of the piece 22, and a notch 22b is formed so that the central part of the rotation shaft 22a is exposed from the rear to the top and bottom. A tension adjustment screw 25 is threaded through the rotary shaft 22a. 26 are spring chambers 12a and 12b of the base 10
It is a compression coil spring that is inserted vertically into the string holder 11 and urges the front part of the string holder 11 upward from below, and its upper end engages with a protrusion provided at the front lower part of the string holder 11. Each of them is arranged as follows. The lower end of the compression coil spring 26 is located in the spring chamber 12
It abuts against a threaded spring seat 27 that is screwed into the insides of a and 12b from below. A square hole 27a is bored in the center of this screwed spring seat 27, and the spring chambers 12a, 1
Spring adjustment square pin 28 inserted from the bottom of 2b
is inserted into this square hole 27a. The head 28a of the square pin 28 for adjusting spring pressure is rotatably fitted into the lower end openings of the spring chambers 12a, 12b using a screwdriver or the like. Therefore, by rotating the head 28a of the spring pressure adjusting square pin 28, the threaded spring seat 27 is rotated and moved up and down, thereby changing the pressing force of the compression coil spring 26 against the string holder 11. be able to.

Next, the operation of the tremolo device having the above configuration will be explained.

First, this tremolo device, which also serves as the tailpiece of a guitar, is assembled with all components such as the base 10, string holder 11, and six pieces 22, and is installed in a predetermined shape on the body plate 15 of the guitar. It is inserted into the hole and fixed with two wood screws 29. Incidentally, a hole for inserting a driver into which the wood screw 29 is screwed is also formed in the corresponding part of the string holder 11, so that the string holder 11 can be easily fixed.

The string 18 is inserted into the insertion hole 23 in front of each piece 22 from each string insertion hole 19 provided in the front part of the string holder 11, and is passed upward through the insertion hole 23, so that the tip of the string is inserted into the thread winding part at the tip of the neck. be led to. Then, the ring at the end of the string 18 is hooked inside the string insertion hole 19. Due to the tensile force of the stretched string 18, the string holder 11 attempts to rotate counterclockwise in FIG.
It comes into contact with a part of the compression coil spring 26, overcomes the upward force of the compression coil spring 26, and comes to rest. On the other hand, the height of 18 is piece 2
The tension of the string can be finely adjusted by turning the tension adjustment screw 25 and changing the position of the bridge 22. When performing a tremolo operation, the tension on the strings is varied by bending the lever 17 upward or downward relative to the plane of the device. That is, when the tip of the lever 17 is lifted with respect to the body plane, the rear part of the string holder 11 moves down around the shafts 14a and 14b, and the front part moves upward with the help of the pressing force of the compression coil spring 26. do. At this time, the shafts 14a on both sides,
The bridge 22 located directly above the axis of the string holder 11 moves rearward together with the string holder 11, thereby increasing the tension of the string and changing the tone of the guitar to become higher. Conversely, when the lever 17 is operated so as to be lowered to the body plane, the string holder 11 acts to raise its rear part and lower its front part. At this time, the bridge 22 moves forward together with the string holder 11, thereby reducing the tension of the string and changing the pitch to become lower. In this way, when operating the lever 17,
Since the bridge 22 moves back and forth instead of up and down to change the tension of the strings and change the sound, the height of the strings hardly changes and tremolo performance can be performed without changing the state of pressing the strings by fingers. Further, the swing of the string holder 11 due to lever operation is small, and the bridge and string holder can be moved stably. In addition,
The biasing force of the compression coil spring 26 affects the operating force of the lever 17, and by turning the spring pressure adjusting square pin 28 clockwise with a screwdriver or the like via its head 28a, the threaded spring seat 27 moves upward to further compress the compression coil spring 26, and the lever 1
Conversely, by turning the spring pressure adjustment square pin 28 to the left, the threaded spring seat 27 lowers to weaken the pressing force of the compression coil spring 26, and the lever 17 Adjusted to make it easier to operate.

As described above, according to the tremolo device of this invention, the approximate center of the string holder is swingably supported by the shaft, and the pieces that support the strings are arranged in parallel approximately directly above the axis. Therefore, during tremolo operation, there is little vertical movement of the end of the string holder relative to the swing angle of the string holder, allowing the string holder to swing stably.
Furthermore, when the string holder swings, the pieces hardly move up or down, only moving back and forth, making it possible to play tremolo without changing the height of the strings. In addition, since the string holder is placed inside the recess in the base, even if the string holder swings violently backwards due to the reaction when a string breaks, the string holder will not hit directly against the guitar body. It will not damage the body.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional explanatory diagram of a conventional tremolo device, Fig. 2 is a plan view of the tremolo device of this invention, Fig. 3 is a right side view of the same, Fig. 4 is a front view of the same, and Fig. 5 is a second tremolo device.
The AA sectional view in the figure and FIG. 6 are perspective views of the pieces. 10... Base, 11... String holder, 14a, 1
4b...Shaft, 17...Lever, 18...String, 22
... Piece, 26... Compression coil spring.

Claims (1)

[Scope of claim for utility model registration] It has a recessed part and a spring chamber for inserting a string holder,
A base fixed to a guitar body; a string holder swingably disposed within a recess of the base to hold an end of a string; and approximately the center of the string holder positioned approximately at the center of the base. a shaft arranged in a direction perpendicular to the strings so as to support the strings; and a bridge provided with screws for adjusting the height and tension of the strings, which are arranged in parallel at approximately the center of the string holder to hold the strings. and is stored vertically in a spring chamber provided at the front of the base,
A compression coil spring that urges the front part of the string holder upward so as to cancel the rotational force caused by the tension of the string, and a lever for operating a tremolo attached to the rear part of the string holder. A guitar tremolo device featuring