JPS6336367Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a tremolo device for guitars.

Tremolo performance, in which the bridge tailpiece to which the guitar strings are fixed, is moved closer to or further away from the guitar body using a tremolo arm, producing small vibrations of the same note on the strings, is the main method used in electric guitars. This is one of the methods. The device for performing this tremolo, specifically the rocking structure of the bridge tailpiece, usually includes a hanging part on the lower surface of the bridge base of the bridge tailpiece, and the hanging part is inserted into the opening of the guitar body. In addition to being locked by an elastic member, the back surface of the front part of the bridge base, which is the attachment part to the upper surface of the body, is configured with a tapered surface, and the mounting screw is inserted into a large diameter through hole formed in this part. Therefore, structures that hold the device in a swingable manner are often used.

However, this conventional structure uses the looseness of the bridge tailpiece to swing, so it has the disadvantage that the swinging is irregular and the tuning is likely to go awry. However, there was a problem in that installation problems were likely to occur.

In view of these circumstances, this invention aims to propose a tremolo device that has an extremely simple structure, can perform rocking regularly and reliably, and does not cause installation troubles. It is.

This idea consists of providing a hanging part on the lower surface of the bridge base of the bridge tailpiece, inserting the hanging part into the opening of the guitar body, and locking it with an elastic member to swingably hold the bridge tailpiece. In the tremolo device, a curved rotation groove is formed at the front end of the bridge base, and a shaft member having a shaft portion accommodated in the rotation groove is fixed to the upper surface of the guitar body at the front of the bridge base. It is characterized by Below, according to the example,
I will explain in detail.

FIG. 1 is an overall front view of an electric guitar having a tremolo device of this invention, in which reference numeral 10 is the guitar body, 11 is the neck, 12 is the head, 13 is the string,
20 is a bridge tailpiece, and 24 is a tremolo arm integrally fixed to the bridge tailpiece.

Figure 2 is an enlarged front view with a partially cutaway section showing the main parts of the tremolo device, and Figure 3 is an enlarged front view showing the main parts of the tremolo device.
4 is an exploded perspective view of the main parts of the bridge tailpiece and the shaft member, FIG. 5 is an enlarged sectional view of the bearing portion of the shaft member, and FIG. 6 is a diagram showing another embodiment. It is a sectional view of the bearing part shown.

As shown in the figure, the bridge tailpiece 20 of this invention has a hanging portion 29 on the lower surface of the bridge base 21.
It has an integrated structure. Each string 13 is fixed to the bridge tailpiece 20 via saddles 25, 25, . . . which are adjustably mounted on the bridge base 21 by screws 26 and 27. The hanging part 29 of the bridge tailpiece 20 is connected to the guitar body 10.
As shown in FIG. 3, an elastic member 18 such as a coil spring is inserted in the lower part of the
It is locked by.

As can be better understood from FIG. 4, the bridge base 21 of the bridge tailpiece 20 has a curved rotation groove 2 at its front end 21a.
2 is formed. As shown in the figure, this rotary recessed groove 22 is connected to a thick block portion 2 at the front of the bridge base.
It is desirable that the front end of 1b be formed to have a semicircular cross section.

On the other hand, on the upper surface of the guitar body 10 at the front of the bridge base 21, a shaft member 30 having a shaft portion 31 accommodated in the rotation groove 22 is fixed.

In other words, the bridge tailpiece 20 swings up and down with respect to the surface of the guitar body 10 using the shaft portion 31 of the shaft member 30 housed in the rotation groove portion 22 at the front end of the bridge base 21 as a fulcrum.

In order to prevent the bridge tailpiece 20 from wobbling laterally, as shown in the figure, the front part of the bridge base is provided with divided block parts 21b, 21b, and the bearing part of the shaft member 30 is 31, 32 and 33 are preferably provided.

Furthermore, in order to smoothly swing the rotation groove portion 22 around the shaft portion 31 of the shaft member 30,
It is proposed to hold the shaft 31 via a rolling bearing 35, as shown in the sectional view in FIG. This rolling bearing 35 is generally called a microbearing, and is normally mounted on the bearing portions 32 and 33 on both sides of the shaft member 30.

In the tremolo device of this invention, as described above, the curved rotation groove 22 is formed at the front end of the bridge base, and the shaft member 30 having the shaft portion 31 accommodated in the rotation groove is provided. Since it is fixedly installed on the upper surface of the guitar body at the front of the bridge base, the bridge tailpis 20 uses the shaft portion 31 of the shaft member 30, which is housed and supported within the rotation groove 22 at the front end of the bridge base, as a fulcrum. It can be swung up and down against the 10 sides of the guitar body. Therefore, compared to conventional tremolo devices that do not have a fulcrum or have a fulcrum that constantly fluctuates, this invention can swing the fulcrum regularly and reliably, and can also avoid tuning errors. Further, according to this invention, since the structure is simple and simple, it can be easily installed and the occurrence of troubles can be greatly reduced, so that it can have great practical advantages.

[Brief explanation of drawings]

FIG. 1 is an overall front view of an electric guitar having a tremolo device of this invention, and FIG. 2 is an enlarged front view with a partially cutaway cross section showing the main parts of the tremolo device.
Figure 3 is a sectional view taken along line 3-3 in Figure 2, Figure 4 is an exploded perspective view of the main parts of the bridge tailpiece and the receiving member, and Figure 5 is an enlarged sectional view of the bearing part of the shaft member. , FIG. 6 is a sectional view of a bearing portion showing another embodiment. 10...Guitar body, 13...Strings, 20...
Bridge tailpiece, 21... Bridge base, 22... Rotating concave groove, 24... Tremolo arm, 25... Saddle, 29... Hanging part, 30...
Shaft member, 31... Shaft portion, 35... Rolling bearing.

Claims (1)

[Claims for Utility Model Registration] 1. A hanging part 29 is provided on the lower surface of the bridge base 21 of the bridge tailpiece 20, and the hanging part 29 is inserted into the opening 19 of the guitar body 10, and the elastic member 18 is inserted into the opening 19 of the guitar body 10.
In the tremolo device in which a bridge tailpiece is held swingably by locking with A tremolo device for a guitar, characterized in that a shaft member 30 having a shaft portion 31 is fixed to the upper surface of the guitar body at the front part of the bridge base. 2. The guitar tremolo device according to claim 1, in which the shaft portion 31 of the shaft member is held via a rolling bearing 35.