JPS6336375Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a tremolo device used for stringed instruments such as guitars.

BACKGROUND TECHNOLOGY This type of tremolo device is configured to lock a ball-shaped locking element provided at the end of a string, but this locking element is simply accommodated in an engaging hole of the tremolo device. Since it is only attached to the edge of the hole by the tension of the string, when the string is loosened by operating the tremolo device, the retainer will be released from being locked to the edge of the hole. Become.

Therefore, when restoring the tremolo device and tensioning the strings, the position of the retainer often does not return to its original position accurately, which has the disadvantage of causing a pitch error. It was hot.

Problems to be solved by the invention As mentioned above, in the conventional tremolo device,
The tension of the string changes by operating the tremolo device,
This causes the problem that the pitch becomes out of order.

This proposal attempts to solve these problems.

Means for Solving the Problems In the present device, the retainer provided at the end of the string is engaged in the retaining groove formed at the lower end of the string insertion path of the block, and this retainer is attached to the pressing piece. Therefore, it is configured to be fixed in the locking groove, and a drive mechanism that can be operated on the base side is provided in order to move the pressing piece toward and away from the locking member.

The drive mechanism is equipped with a rotating piece connected to a pressing piece and a lock lever for rotating this rotating piece. It is configured for easy operation.

Action When you slide the lock lever with your fingers,
The rotating piece rotates to press the pressing piece against the locking element, thereby fixing the locking element within the locking groove.

When the lock lever is returned to its original position, the pivoting piece reverses and separates the pressing piece from the locking element, thereby releasing the locking element.

Embodiment The proposed device will be explained below with reference to the attached drawings.
In FIGS. 1 to 5, 10 is a musical instrument main body 20.
The base is provided in an overlapping manner on the surface of the instrument body 20, and is configured to rotate toward and away from the instrument body 20 using both ends of the front edge facing the head side of the instrument body 20 as fulcrums. The base 10 has a notch provided at the fulcrum position, for example, a curved part 11 whose front edge becomes gradually thinner toward the front, and a required number of strings 30 pulled from the head (not shown) of the musical instrument main body 20. It is equipped with a required number of movable pieces 12 on which to place the movable pieces 12, and a transition means such as a screw rod 13 having a spring coil spring 13a for moving the movable pieces 12 in the string tensioning direction,
The base 10 is rotatably supported by having its curved portion 11 abut against a concave groove 16 of a support shaft 15 screwed into a bush 14 embedded in the musical instrument main body 20.

The base 10 is provided with an arm mechanism 40 and a string end locking block 50.
0 is used to rotate the base 10,
Also, the block 50 is connected to the base 10 by a screw 501.
is connected to.

The arm mechanism 40 includes an arm receiving hole 41 communicating with the base 10 and the block 50, and an elastic bushing 42 fitted into the arm receiving hole 41.
A threaded cylinder 43 is screwed into the receiving hole so as to press the bush 42 toward the bottom of the hole, and a locking groove 4 is loosely inserted into the threaded cylinder 43 and has a locking groove 4 at the insertion end.
41 is provided, and this locking groove 441 is connected to a locking pin 442.
The arm 44 is locked in the receiving hole by the screw locking tube 43, and a fixing nut 45 for fixing the screw locking tube 43 at a desired screw-in position is provided.
By screwing into the receiving hole 41, the elastic bushing 42 is crushed and expanded in the direction perpendicular to the axis, thereby applying frictional resistance to the rotation of the arm 44 and adjusting the torque of the arm 44. It is configured so that it can be done.

The locking block 50 is provided perpendicularly to the base 10 and is housed in a cavity 21 formed in the main body 20 of the musical instrument, so that each of the strings 30 is inserted into the base 10, respectively. Each string insertion path 5 communicates with an insertion hole 17 provided through the string.
1.

All the string insertion paths 5 are located at the lower end of this string insertion path 51.
A locking groove 52 is formed in a direction perpendicular to the string insertion path 51 so that the string insertion path 51 is open. A pressing piece 53 is arranged.

The pressing piece 53 has a locking groove 5.
A drive mechanism 54 is provided in the block 50 to move the base 10 toward and away from the lower end of the string insertion path 51, and the block 50 is provided with a drive mechanism 54 for constantly rotating the base 10 toward the instrument body 20 and keeping it stationary. A return spring 55 is provided.

The string insertion path 51 may be formed as a through hole, but in this embodiment, as shown in FIG. In this way, the groove wall 512 on the opening side serves as a guide surface, making it easy to insert the string 30, and also inserting the locking element 31 provided at the lower end of the string 30 from the cut hole 511 into the locking groove 52. It is easy to store it inside.

For this purpose, the locking groove 52 has the following features as shown in FIG.
A locking edge 5 that locks the locking element 31 when the string is tensioned
21 is sufficient.

The portion of the pressing piece 53 inserted into the locking groove 52 is bent at right angles to form a pressing surface 531, and when the pressing piece 53 rises, the locking member 31
By pressing the locking edge 521 and lowering the pressing piece 53, the pressing surface 531 is separated from the locking element 31 and the locking element 31 is released. A cushion surface 532 made of a piece of rubber or the like is polymerized.

The pressing piece 53 is as shown in FIGS. 2 and 4.
It is constantly biased in the downward direction using the block 50 as a fulcrum by the springing means 541 of the drive mechanism 54.
By rotating the rotating piece 542 of the drive mechanism 54, it is raised against the springing means 541. As shown in FIG. 2, this rotating piece 542 has a support shaft 542a in the center, and a rotating end 542b is connected to the pressing piece 53, and a passive end 542c is driven by a lock lever 543 to lock the springing means 54.
It is configured to rotate against 1.

As shown in FIG. 1, the lock lever 543 is slidably inserted into the sliding groove 18 formed in the base 10, and the insertion end is connected to the locking end 54.
3a, which engages the passive end 542c of the rotating piece 542, and is configured to rotate the rotating piece 542 by sliding within the sliding groove 18. ing.

This lock lever 543 has a pull-out end at a finger hook 543b for easy manual operation.
Therefore, when pulling out from the solid line position in FIG. 3 to the chain line position, it is pulled out with the fingertip against the returning force of the springing means 541.

In order to fix the lock lever 543 in the drawn-out position, a lock means, for example a hook 181, is provided in the sliding groove 18, and the lock lever 54
3 fixes the pressing piece 53 in a state against the springing means 541 by being locked to this hook 181, and releases the pressing piece 53 by being detached from the hook 181 with fingers. It is returned to its original position by the return force of the firing means 541.

Therefore, in the embodiment, the lock lever 543 is made narrower than the sliding groove 18, and is locked to the hook by deflecting it toward the hook 181 in the pulled-out position, and thereafter maintained in the locked state by the force of the springing means 541. be done.

Since the proposed device is like this, base 1
The strings 30 are inserted into the respective insertion holes 17 of the strings 30, and the catchers 31 at the lower ends are introduced into the locking grooves 52 through the cut holes 511 of the string insertion path 51, until all the fasteners 31 are locked. After being accommodated within the groove 52, the lock lever 54
3 is slid as shown by the chain line in FIG. 3, and thereby the rotating piece 542 is rotated, the pressing piece 53
Fig. 6 From the chain line position to the solid line position, firing means 541
Then, all the locking members 31 are pressed and fixed to the locking edge 521 of the locking groove 52 as shown in FIG.

Effects of the Invention Since the device of the present invention is as described above, the position of the retainer 31 is fixed immovably even when the base 10 is rotated using the arm mechanism 40, and the position of the retainer 31 is fixed in the base 10. Since the lock lever 543 allows easy manual operation, it has the effect of being easy to handle.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of the proposed device, Figure 2 is a rear view of the device, Figure 3 is a plan view of the device, Figure 4 is a front view of the device, and Figure 5 is taken along line X-X in Figure 3. Cross-sectional view along
FIG. 6 is an enlarged longitudinal sectional view illustrating the main parts of the present device. In the figure, 10 is the base, 12 is the moving piece, 30 is the string,
50 is a block, 51 is a string insertion path, 53 is a pressing piece, 54 is a drive mechanism, 55 is a return spring, 541 is a spring means, 542 is a rotating piece, and 543 is a lock lever.

Claims (1)

[Scope of utility model registration request] It is provided in a polymeric manner on the surface of the instrument body, and
a base configured to be rotatable in directions toward and away from the surface of the instrument body using the front edge side as a fulcrum; a locking block extending perpendicularly from the base and housed in the empty space of the instrument body; comprising a return spring for permanently positioning the base close to the surface of the instrument body, and an operating arm mechanism for rotating the base against the return spring,
The base has a required number of movable pieces on which strings are placed, and the block has a string insertion path into which the end portion of each string is inserted, and all ends of the string insertion path are open. is provided with a locking groove formed in a direction perpendicular to the string insertion path, and the locking groove has a locking edge that locks a locking element provided at the end of the string when the string is tensioned. a pressing piece movable in a direction toward and away from the locking edge in the locking groove; and a drive mechanism for causing the pressing piece to move toward and away from the locking edge by an external operation. In the tremolo device, the drive mechanism is provided on the base, and the tremolo device is configured to press and fix the string end retainer to the retaining edge by moving the pressing piece toward the retaining edge. a sliding groove, a lock lever that is slidably provided in the sliding groove and can be externally operated by hand, and a rotating piece that engages with the lock lever and is connected to the pressing piece. and a tremolo device configured to drive a pressing piece via the rotating piece by the sliding movement of the lock lever.