JPH0664455B2 - Bass bridge device for guitar - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bass bridge device for a guitar.

<Prior Art> This type of device is often used in electric bass guitars, and generally a substrate fixed to the surface of the guitar body and a locking device provided on the rear side of the substrate, that is, on the lower side of the guitar. It is composed of a frame part and a movable piece attached to the front surface of the locking frame part in a required number on the substrate surface.

The locking frame portion is configured to lock and fix the end of the string extended on the guitar body, and accordingly extends in the direction orthogonal to the extending direction of the string.

Further, the movable pieces are sequentially arranged in parallel along the extension direction of the locking frame so as to separately support the extended strings.
It is designed so that it can be moved in the string extension direction.For this reason, each movable piece is supported by a long screw rod with the locking frame as a fulcrum, and is moved forward and backward by the rotation of the long screw rod. Is configured.

Furthermore, each movable piece has an elevating member, and is designed so that the height of the top surface for receiving the strings of the elevating member can be adjusted by the elevating operation of the elevating member. A screw that penetrates through the member and reaches the substrate surface is screwed as a height adjusting screw, and by rotating this screw, the elevating member can be moved toward and away from the substrate surface. Is configured.

<Problems to be Solved by the Invention> In the above-mentioned conventional base bridge device, the position of each movable piece with respect to each string and the height of the elevating member are set by the long screw rod and the height adjusting screw. After the adjustment of the position and height is completed, the movable piece and the elevating member are maintained in the adjusted position and posture by the pressing force of the strings.

Therefore, it is unavoidable that the movable piece and the elevating member directly receive the vibration of the string generated during the playing of the gidder and make a minute vibration, and this minute vibration is picked up by the pickup provided inside the guitar. However, there is a problem that it is mixed in music as noise.

<Means for Solving the Problem> In the device of the present invention, the required number of movable pieces 13 movable to the string extension are provided on the substrate 11 fixed to the guitar 20, for example, five strings 50 are provided. The base 131 of the movable piece 13 is moved in the string extending direction by the rotation of the long screw rod 122 provided on the substrate 11.

At least one screw hole 113 is provided in the substrate 11, and a base 131 of the movable piece 13 is provided with a long hole 134 communicating with the screw hole 113 and long in the string extending direction. A set screw 136 that is screwed into the screw hole 113 and can fix the base 131 at any time is inserted into the long hole 134.

A space for exposing the substrate 11 is provided on the front surface of a base 131 of the movable piece 13 as a guide portion 132, and an elevating member 14 is attached to the guide portion 132.

The elevating member 14 is provided with an elevating means capable of elevating the elevating member 14 with respect to the substrate 11 at any time, for example, a vertical screw hole 142 provided in the elevating member 14 and a tip end which is screwed into the screw hole 142. A screw 141 that is in contact with the board 11 is provided, and the elevating means elevates and lowers the elevating member 14 to adjust the height of the string receiving portion 143 formed on the top surface of the elevating member with respect to the board 11. Configured. The base 131 is provided with a locking piece 15 capable of fixing the elevating member 14 at any time, and the locking piece 15 is brought into and out of contact with the base 131 at any time by a tightening screw 151 and approaches the base 131. As a result, the lifting member 14 is press-contacted with the lifting member 14 so as to be locked and fixed.

Furthermore, in order to prevent loosening of the long screw rod 122 and the screw 14, the movable piece 13 and the elevating member 14 are made of a material having a large friction resistance, for example, a friction plate 13 made of a hard synthetic resin.
It is desirable to have 7,144 attached, and these friction plates 137,144
In the long screw hole 133 and the vertical screw hole 142.
It gives friction resistance to the screws 141.

<Operation> Since the device of the present invention is as described above, after the movable piece 13 is moved back and forth by the rotation of the long screw rod 122 to determine the position,
Tighten the set screw 136 in the long hole 134 to attach the base 131 to the substrate 1.
It can be fixedly fixed to 1, and after the elevating member 14 is moved up and down to adjust the height, the locking piece 15 is tightened to raise and lower the member.
The 14 can be fixedly fixed to the base 131.

Further, the long screw rod 122 and the screw 141 of the elevating member 14 are attached to the friction plate.
If the 137 and 144 are screwed together, the long screw rod 122 and the screw 141 have a frictional resistance in the rotational direction to prevent their natural loosening.

<Embodiment> FIG. 1 is a perspective view of an electric guitar 20 to which the device 10 of the present invention is attached. The electric guitar 20 has a required number of spools 30 and pickups 40 attached thereto. A required number of strings 50 are spread between the invention device 10 and the invention device 10. As shown in FIG. 2, the device 10 of the present invention includes a board 11 fixed to the surface of the guitar 20 and a terminal of the string 50 provided on the rear side of the board 11, that is, on the side farther from the spool. An engaging frame portion 12 for stopping, a required number of movable pieces 13 provided on the front side of the engaging frame portion 12, that is, on the side close to the spool 30 and an elevating member 14 provided on the movable piece 13. And a locking piece 15.

As shown in FIG. 3 and subsequent figures, the substrate 11 is alternately formed with concave surfaces 111 and convex surfaces 112 extending along the string extending direction. The convex surface 112 has a required number of screw holes 113, for example, three screw holes 113. Mounting holes 114 for mounting the substrate 11 to the guitar 20 are formed in the extension direction in sequence.

The locking frame portion 12 is extended so as to be orthogonal to the string extension direction, and locking means for locking the string end of the string 50, for example, the locking hole 12 is provided.
1 is provided, in order to lock the string end in this locking hole 121,
An anchor 51 is provided at the end of the string.

Further, a long screw rod 122 extending on each concave surface 111 of the substrate 11 is rotatably attached to the locking frame portion 12,
The movable piece 13 is screwed to the tip of the long screw rod 122.

The movable piece 13 is a base 131 screwed to the long screw rod 122.
A guide portion 132 provided on the front part of the base 131, a long screw hole 133 distantly installed in the string extending direction so that the long screw rod 122 is screwed onto the base 131, and the convex surface. 122 screw holes 113
Has a long hole 134 vertically penetrating the base 131 so as to communicate with the base 131. The base 131 has a concave surface 111 and a convex surface of the substrate 11.
The projection portion 135 is formed so as to be mounted on the projection surface 135 and to be in contact with the concave surface 111 so as to be guided by the concave surface 111 in the string extending direction.

The guide portion 132 is formed of a space that is formed perpendicularly to the base 131 so as to expose the convex surface 112, and in this embodiment, this space is formed so that the front surface is also open.

The long hole 134 is formed so as to be connected to the screw hole 113 by a set screw 136, and is formed to have a length such that two adjacent screw holes 113 of the three screw holes 113 communicate with each other at both hole ends. Accordingly, the long hole 134 can communicate with any of the screw holes 113 over the entire movable distance of the base 131, that is, the movable piece 13, and the movable piece 13 can be fixed at any position.

The number of the screw holes 113 can be reduced by increasing the length of the long holes 134, and the guide portion 132 may have another structure.

If desired, the base 131 is provided with a material having a large frictional resistance, for example, a friction plate 137 made of a hard synthetic resin, and the friction plate 137 is located in the middle of the long screw hole 133.
It is inserted into a slit 138 formed by cutting in the base 131, and the long screw rod 122 is tightly screwed into the slit 138.

The elevating member 14 is configured to be fitted into the guide portion 132 of the base 131 and move up and down inside the guide portion 132, and the screw 141 is used as the elevating means.

The screw 141 is screwed into a vertical screw hole 142 that is transparently provided in the elevating member 14, and the tip thereof is set so as to project from the lower surface of the elevating member 14 and contact the convex surface 112.

Accordingly, by rotating the screw 141 to increase or decrease the protruding length of the tip thereof, the elevating member 14 is moved up and down within the guide portion 132 and the string receiving portion 143 formed on the top surface of the elevating member 14, for example, the string receiving portion 143. The height of the groove with respect to the substrate 11 can be adjusted.

If desired, the elevating member 14 is provided with a friction plate 144 made of the same hard synthetic resin as described above in order to prevent the screw 141 from loosening, and the friction plate 144 moves up and down so as to traverse the vertical screw hole 142. It is tightly fitted in the slit 145 provided in the member 14 and is tightly screwed with the screw 141. The locking piece 15 is provided for locking and fixing the elevating member 14 in the adjustment position thereof, and in the embodiment, the base 131 is projected laterally to the front opening of the guide portion 132.
Mounted on the front of the.

The locking piece 15 is provided with a tightening means such as a tightening screw 151. The tightening screw 151 attaches / detaches the locking piece 15 to / from the elevating member 14 so that the elevating member 14 is immovably engaged when desired. It is configured to be fixed and fixed.

For this purpose, the locking piece 15 is provided with a tightening screw hole 152, and the base 131 is provided with a through hole 153 communicating with the tightening screw hole 152. Hole 152 and through hole 153
It penetrates through the inside and its head projects toward the base 131 side. Accordingly, when the tightening screw 151 is rotated, the locking piece 15 comes into contact with and separates from the base 131, and when the locking piece 15 is brought close to the base 131, the elevating member 14 is fixed in the guide portion 132.

In order to improve the fixing effect of the locking piece 15, in the embodiment, the surfaces of the locking piece 15 and the elevating member 14 that contact each other are inclined surfaces 154,
Each of them is formed on 146 to improve the pressure contact effect.

Contrary to the embodiment, the tightening screw 151 has a base 131 from the front.
In this case, the tightening screw hole 152 provided in the locking piece 15 serves as a through hole, and the through hole 153 of the base 131 is used.
Is formed in the tightening screw hole.

<Effects of the Invention> Since the device of the present invention is as described above, after the movable piece 13 is moved, the set screw 136 of the elongated hole 134 is tightened to make the base 13
(1) Accordingly, the movable piece 13 can be fixed on the substrate 11, and the locking piece 15 can be tightened with screws even after the height position of the elevating member 14 is adjusted.
The lifting member (14) can be pressed against the lifting member (14), and the lifting member (14) can be fixed thereby.

Therefore, in the device of the present invention, it is possible to effectively prevent the movable piece 13 and the elevating member 14 from vibrating due to the vibration of the strings 50, and there is an effect that noise is not generated during the performance. By fixing the movable piece 13 and the elevating member 14, the whole device can be tightened as a whole, so that the vibration of the string can be prevented.
There is an effect that it can be transmitted well to the wood part of 20 and therefore a good quality sound can be obtained from the guitar 20.

Further, in the device of the present invention, if the friction plates 137 and 144 are inserted in the long screw hole 133 and the vertical screw hole 142, the long screw rod 122
Since the loosening of the screw 141 and the vibration caused thereby can be prevented, it is possible to prevent the noise caused by the vibration.

[Brief description of drawings]

FIG. 1 is a front view of an electric guitar to which the device of the present invention is attached,
2 is a perspective view of the device of the present invention, FIG. 3 is an enlarged plan view of a part of the same device, FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, and FIG. 5 is FIG. 5 is a sectional view taken along line 5-5, FIG. 6 is a sectional view taken along line 6-6 in FIG. 3, FIG. 7 is a front view of a portion of the device of the present invention shown in FIG. 3, and FIG. Invention device 1
It is an exploded perspective view showing a part. In the figure, 10 is the device of the present invention, 11 is a substrate, 113 is a screw hole, 12 is a locking frame portion, 122 is a long screw rod, 13 is a movable piece, 131 is a base, 132
Is a guide part, 133 is a long screw hole, 134 is a long hole, 136 is a set screw, 137 is a friction plate, 14 is an elevating member, 141 is a screw as an elevating means, 143 is a string receiving part, 144 is a friction plate, 15 Is a locking piece, 151
Is a tightening screw, 152 is a tightening screw hole, 20 is a guitar, 30 is a spool, 40 is a pickup, and 50 is a string.

Claims (2)

[Claims] 1. A substrate fixed to a guitar, a required number of movable pieces arranged in parallel on the substrate and movable in the string extension direction, an elevating member provided on the movable piece, and the elevating member. A locking piece for stopping, and at least one screw hole located on the lower surface of the movable piece is provided on the base plate, and the movable piece extends with the locking frame portion provided on the base plate as a fulcrum. A base that is screwed into the long screw rod and moves forward and backward in the string extending direction by the rotation of the long screw rod, and a length that is formed on the base so as to extend in the string extending direction and that communicates with the screw hole of the substrate. A hole, a set screw that is inserted into the elongated hole so as to be screwed into the screw hole of the base plate, and that can fix the base at any time by tightening, and a guide part that mounts the elevating member on the front surface of the base. The lifting member includes a string receiving portion formed on a top surface portion, and the string receiving portion. Elevating means for elevating and lowering the elevating member at any time to adjust the height with respect to the board. The locking piece is provided with a tightening screw for allowing the locking piece to come into contact with and separate from the base at any time. A bass bridge device for a guitar, characterized in that it is constituted so that it is brought into pressure contact with the elevating member by a tightening operation so as to be locked and fixed. 2. A vertical screw hole penetrating from the string receiving portion side to the board side of the elevating member as the elevating means of the elevating member, and a screw for height adjustment is provided in the vertical screw hole at the tip thereof. A friction plate having a large frictional resistance is tightly screwed to the long screw rod screwed to the movable piece and screwed to the movable piece and the screw of the elevating means, respectively. The bass bridge device for a guitar according to claim 1, wherein the long screw hole of the base and the vertical screw hole of the elevating means are respectively interposed.