JP2015052711A - String adjustment mechanism, tremolo unit, and bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tremolo unit and a bridge excellent in sound transmission and hardly causing an off-key and capable of being attached to the preexisting electric guitar without post-processing.SOLUTION: A tremolo unit 1 installs a slider 5 in a guide groove 2a of a base plate 2 which is attached to a body 101 of an electric guitar, and fixes the slider 5 to the base plate 2 by a position adjustment screw 8, and connects the slider 5 and a saddle 6 by a tuning screw 7. The saddle 6 is provided with a projection part pressed against the base plate 2. A first arm part 6a and a second arm part 6b oscillate with the top end 6e of the projection part as a fulcrum. A string S is hung on a string set part 6f of the second arm part 6b, and a head part of the tuning screw 7 is engaged with the first arm part 6a. The slider 5 is held so as not to come off from the base plate 2 by a thin part. A height of the string set part 6f is adjusted by a screwing amount of the tuning screw 7, and a string height is adjusted.

Description

  The present invention relates to a string adjusting mechanism used for an electric guitar, an electric bass tremolo unit, a bridge, or the like.

  Electric guitars and electric basses are provided with a fixed unit (bridge) or a movable unit (tremolo unit) for stretching strings. The tremolo unit is configured so that the entire unit can be tilted to an arbitrary angle by arm operation. The end of the string is locked to the bridge or tremolo unit. The tension of the strings is mainly adjusted by the pegs (pincushion) provided on the neck at the top of the guitar. However, the tension of the strings and the string height can also be adjusted on the bridge or tremolo unit. (Hereinafter referred to as a string adjustment mechanism) is provided. Since the tremolo unit may shift the fulcrum of the unit due to the operation of shaking the entire unit and the pitch may be distorted, it is desirable to provide a mechanism that can easily adjust the string tension and string height.

  20A and 20B are explanatory views of a conventional tremolo unit, in which FIG. 20A is a plan view, and FIG. 20B is a vertical cross-sectional view (X21-X21 cross-sectional view of FIG. 20A). FIG. 21 is an explanatory diagram of an electric guitar provided with a tremolo unit. In addition, illustration of the string 105 is abbreviate | omitted in Fig.20 (a). As shown in FIG. 21, the electric guitar 100 includes a body 101 and a neck 102. Six pegs 103 are arranged at the tip of the neck 102, and a tremolo unit 104 is attached to the lower part of the body 101. Six strings 105 are stretched between the peg 103 and the tremolo unit 104.

  20A and 20B, the tremolo unit 104 includes a base 106 made of a metal plate or the like, a block 107 attached to the back side of the base 106, and six pieces arranged on the surface of the base 106. The saddle 108 is provided. The block 107 is disposed in a recess 101a formed in the body 101, and is connected to the body 101 via a coil spring 101b. The base 106 includes a base body 106a that is in contact with the surface of the body 101, and a vertical portion 106b that rises vertically from one end of the base body 106a. A tremolo arm 109 is attached to one end of the base body 106a in the width direction. A screw hole is formed at one end of the base body 106a in the direction orthogonal to the width direction, and is fixed to the body 101 with a fixing screw. By manipulating the tremolo arm 109, the tremolo unit 104 is tilted upward (direction A in FIG. 20B) around the screwing site, and the tension of the string 105 locked to the tremolo unit 104 is varied. Change the pitch.

  The tremolo unit 104 is provided with a mechanism for adjusting the tension and string height of the string 105 to lock the string 105. The string 105 is hooked on the string hook portion 108 a of the saddle 108 and then pulled into and locked into a locking hole 107 a formed in the block 107. The distance between the string hanging portion 108a and the vertical portion 106b is adjusted by the position adjusting screw 110, and the height from the base body 106a is adjusted by the string height adjusting screw 111. By adjusting the position of the string hanging portion 108a, the tension and the string height of the string 105 can be adjusted. A tremolo unit equipped with this type of mechanism (string adjustment mechanism) is disclosed in Patent Document 1. In the tremolo unit of Patent Document 1, a string hung on a saddle (bridge saddle) is hung on a slider, and then pulled into the block to be locked by a position adjusting screw (octave adjusting screw) and a string height adjusting screw. The saddle can be adjusted by adjusting the position and height of the saddle. In addition to the configuration shown in FIG. 20, the tremolo unit of Patent Document 1 includes a fine tuning mechanism that further finely adjusts the string tension by finely adjusting the position of the slider.

Japanese Utility Model Publication No. 63-30893

  In the tremolo unit shown in FIG. 20, the saddle 108 is supported at a position floating from the base body 106 a by the position adjusting screw 110 and the string height adjusting screw 111. In such a structure, the vibration of the string 105 cannot be transmitted directly to the base body 106a, but is transmitted via a screw, so that sound transmission loss is large. In addition, although two string height adjusting screws 111 are attached across the string 105, it is difficult to maintain a state where the two string height adjusting screws 111 receive the pressure from the string 105 evenly. Therefore, the saddle 108 rolls or tilts due to poor screw adjustment or vibration, and the adjacent saddles 108 come into contact with each other, chattering due to an increase in the contact area between the string and the saddle, vibration transmission failure, etc. May occur. Furthermore, since the screw holes are formed in the saddle 108, it is difficult to form the saddle 108 with a material that is difficult to thread such as silver or ceramic, and it is possible to use saddles 108 of various materials according to the tone preference. Have difficulty. In addition, since the base plate is screwed to the body, the fulcrum shifts greatly when the operation of shaking the entire unit (tremolo operation) is performed, and the pitch error caused by this shift is large.

  In view of these points, the object of the present invention is a string adjustment mechanism with a simple structure that has good sound transmission, is not prone to roll or tilt of the saddle due to vibration or poor adjustment, and can realize various tones. Is to realize.

  Another object of the present invention is to use the above-described string adjustment mechanism to achieve good sound transmission, little pitch deviation, and various timbres, which can be used later on existing electric guitars and electric basses. It is an object of the present invention to provide a tremolo unit and a bridge that can be easily installed without processing.

  In order to solve the above-described problems, a string adjusting mechanism according to a first configuration of the present invention includes a base plate attached to a body of an electric guitar or an electric base, and a base plate that is slidable along a direction in which the string is stretched. A slider attached to the base plate, a position adjusting fixture for fixing the slider to the base plate at a predetermined slide position, a contact portion capable of contacting the base plate, and a string hanging portion for hanging the string. And a tuning fixture for fixing the saddle to the slider in a predetermined swinging posture.

  In order to solve the above problems, the string adjustment mechanism of the second configuration of the present invention is a base plate attached to the body of the electric guitar or the electric base, and is slidable along the direction in which the strings are stretched. A slider attached to the base plate; a position adjusting fixture for fixing the slider to the base plate at a predetermined sliding position; a first saddle including a contact portion that contacts the base plate and a string hook portion that hangs the string; A second saddle supported by the first saddle mounted on the base plate so as to be swingable and having a second string hanging portion for hanging the string; and the slider in a predetermined swinging posture with the second saddle. And a tuning fixture to be fixed to the head.

  In the present invention, a saddle (a saddle constituted by one member or a connected saddle in which the first and second saddles are connected) formed with a string hanging portion for hanging an electric guitar or an electric bass string in this way is used as a string pressure. Thus, the saddle (the second saddle in the case of the second configuration) can be fixed to the slider in a predetermined swinging posture. Therefore, the height of the string hanging portion can be adjusted by adjusting the inclination of the saddle with the tuning fixture. Moreover, the position of the saddle on the base plate can be adjusted via the slider by the position adjusting screw. Therefore, the string can be stretched by adjusting the tension and height of the string. Alternatively, in the string adjustment mechanism having the second configuration, it is possible to finely adjust the tension of the string by the second saddle in a state where the string height is set to a predetermined height by the first saddle. Therefore, it can be used as a fine tuning mechanism.

  In particular, in the present invention, since the saddle with strings is always pressed against the base plate, sound transmission to the body through the base plate is favorably performed. In addition, since the saddle does not sway or tilt due to vibration or poor screw adjustment, there is little possibility of chattering or sound transmission failure due to contact between the saddles or poor contact between the strings and the saddle. In addition, since it has a simple structure that only adjusts the two fixing tools, the tuning fixing tool and the position adjusting fixing tool, the adjustment of the string height and the tension is easy. Further, various kinds of tuning fixtures for fixing the inclination of the saddle can be used, and the saddle can be configured not to perform complicated machining such as screw machining. Therefore, materials such as silver and ceramic can be used, and saddles of various materials can be used according to the desired tone. Therefore, it is possible to realize a natural tone that was difficult to achieve with conventional products.

  In the present invention, the position adjusting fixture is a position adjusting screw, the tuning fixture is a tuning screw, and is supported so as to be swingable in the case of the string adjusting mechanism of the second configuration. The second saddle) includes a head locking portion that locks the head of the tuning screw, and the base plate guides the slider in the sliding direction and the head locking portion side to the head locking portion side. It is preferable that a position restricting portion for preventing movement of the slider is provided, and the slider has a tuning screw hole capable of screwing and fixing the tuning screw. In this way, the inclination of the saddle (second saddle) can be adjusted to an angle according to the screwing amount of the tuning screw, and the position of the saddle on the base plate can be adjusted via the slider according to the screwing amount of the position adjusting screw. Can be adjusted. Further, it is only necessary to form a hole for locking the head of the tuning screw in the saddle, and it is not necessary to perform screw processing. Therefore, a material such as silver or ceramic that is difficult to thread can be used. In addition, when the string hanging part and the head locking part are formed on both sides of the saddle fulcrum, the height of the string hanging part can be easily adjusted even when the string pressure is large, so setting Is easy. Furthermore, since it can be made into a saddle shape that is simple and highly designable, the appearance is good.

  In the present invention, the saddle (the first saddle and the second saddle in the case of the second configuration) and the slider are arranged in a predetermined number in the arrangement direction intersecting the sliding direction of the slider, and the base plate is arranged in the arrangement A plurality of support surfaces arranged in a direction, and each of the plurality of support surfaces is formed to have a height difference from the support surface at an adjacent position, and each of the plurality of support surfaces includes the saddle ( In the case of the second configuration, it is desirable that the abutting portion of the first saddle is pressed. If it does in this way, the roll of a saddle will be controlled by the level | step difference between adjacent support surfaces. Accordingly, it is possible to reduce problems such as chatter noise and sound transmission failure caused by contact between the saddles and poor contact between the strings and the saddle due to rolling.

  Next, the tremolo unit according to the present invention includes the string adjusting mechanism having the first configuration described above, a support member that supports the base plate of the string adjusting mechanism to be swingable with respect to the body, and the saddle. A biasing member that biases the base plate in a direction opposite to a swinging direction of the base plate by a pressing force from a string applied to the base plate, and a tremolo arm connected to the base plate. As described above, when the string adjusting mechanism of the present invention is used in the tremolo unit, the base plate can be attached to the body in the same manner as the conventional product, so that it is easy to add to the existing electric guitar and electric base without post-processing. It can be attached to and is highly versatile. In addition, as described above, sound transmission to the body is good, and there is little risk of chattering or sound transmission failure due to vibration or poor adjustment. In addition, saddles of various materials can be used to achieve the desired tone. Furthermore, it is possible to achieve a simple and highly design appearance.

  In the tremolo unit of the present invention, the support member is a holder fixed to the body, the holder is formed with an insertion groove, and the base plate is formed with an insertion piece to be inserted into the insertion groove. It is desirable that In such a configuration, the fulcrum shift is small when an operation of shaking the entire unit (tremolo operation) is performed as compared with the case where the base plate is screwed to the body. Therefore, it is possible to greatly reduce the pitch error caused by the tremolo operation.

  Further, the bridge according to the present invention includes the string adjusting mechanism having the first configuration described above and a fixing screw for screwing the base plate of the string adjusting mechanism to the body. As described above, when the string adjusting mechanism of the present invention is used as a bridge, the base plate can be attached to the body in the same manner as a conventional product, so that it can be easily applied to existing electric guitars and electric bases without post-processing. It can be attached and is highly versatile. In addition, as described above, sound transmission to the body is good, and even if intense vibration of the base string is applied, there is little possibility of occurrence of chatter noise or sound transmission failure. In addition, saddles of various materials can be used to achieve the desired tone. Furthermore, it is possible to achieve a simple and highly design appearance.

  The tremolo unit according to the present invention includes the string adjusting mechanism having the above-described second configuration, a string height adjusting screw screwed into the body, and a pressing force from a string applied to the base plate via the saddle. A biasing member that biases the base plate in a direction opposite to the swinging direction of the base plate; and a tremolo arm connected to the base plate; a depression is formed on an outer peripheral surface of the string height adjusting screw; Is characterized in that an insertion piece to be inserted into the recess is formed. In this way, as in the case where the insertion groove is formed in the fixed holder, the shift of the fulcrum when the tremolo operation is performed is small, and the pitch deviation can be greatly reduced. In addition, the string height of a plurality of strings locked to the tremolo unit can be adjusted together by a string height adjusting screw.

  According to the string adjusting mechanism of the present invention, and the tremolo unit and bridge using the same, the contact portion of the saddle is pressed against the base plate by the pressure of the string, and sound transmission to the body is favorably performed through the base plate. Can do. In addition, it is difficult for the saddle to roll or tilt due to vibration or poor adjustment, and there is little risk of chattering or poor sound transmission due to contact between the saddles or poor contact between the strings and the saddle. In addition, it has a simple structure that adjusts both the tuning fixture and the position adjusting fixture, and the string height and tension can be easily adjusted. Furthermore, since it is not necessary to perform complicated processing on the saddle, various materials such as silver and ceramic that are difficult to process can be used, and a favorite tone can be realized. In addition, it can be easily attached to existing electric guitars and electric bases without post-processing, and is highly versatile.

It is explanatory drawing of a tremolo unit provided with the string adjustment mechanism of Embodiment 1 to which this invention is applied. It is explanatory drawing which shows the baseplate of the tremolo unit of FIG. It is explanatory drawing which shows the block of the tremolo unit of FIG. It is explanatory drawing which shows the holder of the tremolo unit of FIG. It is explanatory drawing which shows the saddle of the tremolo unit of FIG. It is explanatory drawing which shows the slider of the tremolo unit of FIG. It is explanatory drawing of a tremolo unit provided with the string adjustment mechanism of Embodiment 2 to which the present invention is applied. It is explanatory drawing which shows the baseplate of the tremolo unit of FIG. It is explanatory drawing which shows the holder of the tremolo unit of FIG. It is explanatory drawing which shows the saddle of the tremolo unit of FIG. It is explanatory drawing of a bridge provided with the string adjustment mechanism of Embodiment 3 to which this invention is applied. It is explanatory drawing which shows the baseplate of the bridge | bridging of FIG. It is explanatory drawing which shows the saddle of the bridge | bridging of FIG. It is explanatory drawing which shows the slider of the bridge | bridging of FIG. It is explanatory drawing of a tremolo unit provided with the string adjustment mechanism (fine tuning mechanism) of Embodiment 4 to which the present invention is applied. It is explanatory drawing which shows the baseplate of the tremolo unit of FIG. It is explanatory drawing which shows the block of the tremolo unit of FIG. FIG. 16 is an explanatory diagram showing a saddle of the tremolo unit in FIG. 15. It is explanatory drawing which shows the slider of the tremolo unit of FIG. It is explanatory drawing which shows the tremolo unit of a prior art example. It is explanatory drawing which shows an electric guitar provided with a tremolo unit.

  Embodiments of a string adjustment mechanism to which the present invention is applied, a tremolo unit, a bridge, and the like including the same will be described below with reference to the drawings. In the first to fourth embodiments, the tremolo unit and the bridge of the first to fourth embodiments are attached to the electric guitar 100 shown in FIG. 21 instead of the conventional tremolo unit 104. In this specification, for the sake of convenience, the direction in which the saddles and the sliders that hang the strings are arranged is the unit width direction Z1, and the direction orthogonal to the unit width direction Z1 (direction in which the slider slides) is the unit front-rear direction Z2. A direction perpendicular to the unit width direction Z1 and the unit front-rear direction Z2 (a direction perpendicular to the surface of the body 101 to which the tremolo unit and the bridge are attached) is defined as a unit vertical direction Z3.

[Embodiment 1 (tremolo unit)]
FIG. 1 is an explanatory view of a tremolo unit including a string adjustment mechanism according to the first embodiment, FIG. 1 (a) is a plan view of the tremolo unit, FIG. 1 (b) is a side view of a base plate and a block, and FIG. FIG. 3 is a cross-sectional view of the tremolo unit (an XX cross-sectional view of FIG. 1A). 2 to 6 are explanatory views of components of the tremolo unit, FIG. 2 is an explanatory view of a base plate, FIG. 3 is an explanatory view of a block, FIG. 4 is an explanatory view of a holder, and FIG. 5 is an explanatory view of a saddle. FIG. 6 is an explanatory diagram of the slider. The tremolo unit 1 of Embodiment 1 is attached to the body 101 of the electric guitar 100 without performing special processing.

  As shown in FIG. 1, the tremolo unit 1 according to the first embodiment includes a base plate 2, a block 3 attached to the back side of the base plate 2, a coil spring 3g (biasing member) attached to the block 3, and the base plate 2 as a body. A holder 4 (supporting member) that is swingably supported with respect to 101, a slider 5 that slides in a direction in which the string S is stretched along the guide groove 2a formed in the base plate 2, a saddle 6 that hangs the string S, A tuning screw 7 (tuning fixture) for connecting the saddle 6 to the slider 5, a position adjusting screw 8 (position adjusting fixture) for adjusting the position of the slider 5, and an end on the holder 4 side as a fulcrum. A tremolo arm 9 is provided as an operation member for swinging. The components of the tremolo unit 1 are made of metal. Alternatively, other materials may be used in consideration of sound transmission, workability, strength, appearance, and the like.

  The tremolo unit 1 includes a string adjustment mechanism 1A including a base plate 2, a slider 5, a saddle 6, a tuning screw 7, a position adjusting screw 8, and the like. The string adjusting mechanism 1A is connected to the slider 5 by adjusting the inclination of the saddle 6 with the tuning screw 7 to adjust the string height, and further adjusting the position of the slider 5 on the base plate 2 with the position adjusting screw 8. This is a mechanism for adjusting the tension of the string S by adjusting the position of the saddle 6.

  2A is a plan view of the base plate 2, FIG. 2B is a side view of the base plate 2, and FIGS. 2C and 2D are cross-sectional views of the base plate 2 (X1-X1 cross-sectional view of FIG. 2A). X2-X2 cross-sectional view). As shown in FIG. 1 and FIG. 2, the base plate 2 is bent in the unit vertical direction Z3 from one long side of the base body 2A and a substantially rectangular flat plate-shaped base body 2A that contacts the surface of the body 101. A rising portion 2B that rises vertically is provided. Six linear guide grooves 2a are formed in the base body 2A. The guide grooves 2a extend in a direction perpendicular to the rising portion 2B (unit front-rear direction Z2) and are arranged in parallel at regular intervals. The guide groove 2a includes a through portion 2b that penetrates the base body portion 2A and a thin portion 2c (position restricting portion) that extends along both sides of the through portion 2b in the groove width direction. The back side of the thin-walled portion 2c is a stepped portion 2d that is recessed to a certain depth from the back surface (surface on the body 101 side) side of the base main body portion 2A.

  Six position adjusting screw locking holes 2e are formed in the rising portion 2B. The position adjustment screw locking hole 2e is formed on an extension line of the guide groove 2a. The base body 2A has insertion pieces 2f formed at both ends of the long side located on the opposite side to the rising portion 2B. The back surface of the insertion piece 2f is a taper surface, and the insertion piece 2f becomes thinner toward the tip. As will be described later, the base plate 2 is attached so as to be swingable in the direction of lifting from the body 101 with the tip of the insertion piece 2f as a fulcrum by engaging the insertion piece 2f with the holder 4. An arm mounting hole 2g is formed at one end of the base body 2A in the unit width direction Z1. The base plate 2 can be tilted with respect to the body 101 by operating the tremolo arm 9 attached to the arm attachment hole 2g. In addition, screw holes 2h are formed in the base body portion 2A at three locations among the six guide grooves 2a, between the first and second, between the third and fourth, and between the fifth and sixth. Has been.

  3A is a plan view of the block 3, FIG. 3B is a side view of the block 3, and FIGS. 3C and 3D are cross-sectional views of the block 3 (X3-X3 cross-sectional view of FIG. 3A). X4-X4 cross-sectional view). As shown in FIG. 1 and FIG. 3, the block 3 has a thin and substantially rectangular parallelepiped shape that is long in the unit width direction Z1 and the unit vertical direction Z3, and is formed on the body 101 as shown in FIG. Is disposed in the recessed portion 101a. The block 3 is formed with three screw holes 3b that open to the end surface 3a on one side (base plate 2 side) in the unit vertical direction Z3. The screw hole 3 b overlaps with the three screw holes 2 h formed in the base plate 2. The block 3 is fixed to the base main body 2A by bringing the end surface 3a of the block 3 into contact with the base main body 2A and screwing and fixing fixing screws (not shown) into the screw holes 2h and 3b.

  In the end surface 3a of the block 3, six string locking holes 3c and six recesses 3d are opened at positions overlapping the guide grooves 2a of the base body 2A. The string locking hole 3c is formed at a position overlapping the end of the penetrating portion 2b, and extends perpendicular to the end surface 3a. As shown in FIG. 1C, the end of the string S that has passed through the through-hole 2b is drawn into and locked in the string locking hole 3c. The recess 3d is a recess having a certain depth extending in the unit front-rear direction Z2 from the vicinity of the string locking hole 3c toward the side surface 3e of the block 3, and is open to the side surface 3e. The groove width of the recess 3d is the same as the width of the penetrating part 2b of the guide groove 2a. Extending into the recess 3d is a tip of a tuning screw 7 attached so as to protrude from the slider 5 to the block 3 side. The recess 3d avoids interference between the tuning screw 7 and the block 3.

  One end of the block 3 in the unit width direction Z1 overlaps with an arm mounting hole 2g formed in the base body 2A, and an arm mounting hole 3f is formed at this position. The arm attachment hole 3f is a screw hole inclined at a predetermined angle (for example, 10 °) with respect to the unit vertical direction Z3, and the end of the tremolo arm 9 inserted through the arm attachment hole 2g is screwed together. Here, as shown in FIG. 1C, one end of a coil spring 3 g is fixed to the block 3. The other end of the coil spring 3 g extends to the neck side of the electric guitar like the string S, and is fixed to the body 101. The tremolo unit 1 is urged so that the base plate 2 and the block 3 are swung upward by the pressing force from the string S. On the other hand, the coil spring 3g is attached so as to bias the base plate 2 and the block 3 in the direction opposite to the biasing force. Therefore, when the tremolo operation is not performed, the state where the base plate 2 is in contact with the body 101 side is maintained.

  4A is a plan view of the holder 4, FIG. 4B is a cross-sectional view of the holder 4 (X5-X5 cross-sectional view of FIG. 4A), and FIGS. 4C and 4D are side views of the holder 4. FIG. It is a figure (a side view seen from the base plate 2 side and the opposite side). As shown in FIGS. 1 and 4, the holder 4 is an elongated plate-like member extending in the unit width direction Z1. Both side portions of the holder 4 in the longitudinal direction are thick portions 4a, and the central portion is a thin portion 4b. The holder 4 is fixed to the body 101 by screwing a fixing screw (not shown) into a fixing hole 4c formed in the thin portion 4b.

  The thick portion 4a of the holder 4 is formed with an insertion groove 4d that opens on a side surface facing the base plate 2 side. The insertion groove 4d has a wedge-like cross-sectional shape in which the height in the unit vertical direction Z3 decreases as it goes back. The base plate 2 is swingably supported by the holder 4 by inserting the insertion piece 2f into the insertion groove 4d.

  5 (a) is a plan view of the saddle 6, FIG. 5 (b) is a sectional view of the saddle 6 (X6-X6 sectional view of FIG. 5 (a)), and FIG. 5 (c) is a front view of the saddle 6 (strings). It is the figure seen from the hanging part 6f side in the unit front-back direction Z2. As shown in FIG. 1A, the tremolo unit 1 includes six saddles 6 arranged on the base plate 2 in the unit width direction Z1. Each saddle 6 is a rectangular member in plan view that is long in the unit front-rear direction Z2. As shown in FIGS. 1 and 5, the saddle 6 includes a first arm portion 6a extending in the unit front-rear direction Z2 toward the rising portion 2B, and a second arm portion 6b extending on the opposite side of the rising portion 2B. A string passage hole 6c is formed in the center of the saddle 6 in the unit width direction Z1. Two projecting portions 6d projecting toward the base body portion 2A are formed on both sides of the string passage hole 6c in the unit width direction Z1 at a lower portion of the saddle 6 (a portion on the base body portion 2A side). The front ends 6e (contact portions) of both protrusions 6d form a ridge line extending in a straight line in the unit width direction Z1, and are in contact with the base body portion 2A. The saddle 6 is configured such that the first arm portion 6a and the second arm portion 6b swing around the tip 6e of the protrusion 6d.

  In the center of the second arm portion 6b in the unit width direction Z1, a string hook portion 6f for hanging the string S drawn into the string passage hole 6c is formed. The surface of the string hanging portion 6f has an upward curved shape, and this surface is a string hanging surface. On the other hand, a head locking portion 6g is formed at a position near the tip of the first arm portion 6a. The head locking portion 6g is a through hole that penetrates the first arm portion 6a in the unit vertical direction Z3. In addition, the shape of the head latching | locking part 6g can also be made into a shape different from a through-hole. For example, the cutout shape opened to the edge of the 1st arm part 6a may be sufficient. Moreover, the recessed part 6h surrounding the head latching | locking part 6g in a half-moon shape is formed in the upper surface of the 1st arm part 6a. When the head of the tuning screw 7 is locked to the head locking portion 6g, the head contacts the bottom surface of the recess 6h.

  6 (a) is a plan view of the slider 5, FIG. 6 (b) is a cross-sectional view of the slider 5 (X7-X7 cross-sectional view of FIG. 6 (a)), and FIG. 6 (c) is viewed in the unit longitudinal direction Z2. FIG. 6 is a side view of the slider 5 (viewed from the side opposite to the screw fixing portion 5b). As shown in FIG. 1A, the tremolo unit 1 includes six sliders 5 arranged in the unit width direction Z1. Each slider 5 is mounted in the guide groove 2a and is slidable in the unit longitudinal direction Z2 along the guide groove 2a. As shown in FIGS. 1 and 6, the slider 5 includes a slider main body 5a extending in the unit front-rear direction Z2, and a screw fixing projecting from the end of the slider main body 5a on the rising portion 2B side to the same side as the rising portion 2B. The unit 5b is provided. A slider-side screw hole 5c is formed in the screw fixing portion 5b. When the slider 5 is mounted in the guide groove 2a, the position adjustment screw locking hole 2e formed in the rising portion 2B and the slider side screw hole 5c are in a coaxial state. By locking the head of the position adjusting screw 8 in the position adjusting screw locking hole 2e and adjusting the screwing amount of the position adjusting screw 8 into the slider side screw hole 5c, the slider 5 can be moved freely within the slide range. Can be fixed in the position.

  The slider body 5a has a shape in which a body upper part 5d having a width inscribed in the penetrating part 2b of the guide groove 2a and a body lower part 5e having a width inscribed in the step part 2d are stacked in the unit vertical direction Z3. A tuning screw hole 5f is formed at the end of the slider body 5a opposite to the screw fixing portion 5b. Here, the first arm portion 6a of the saddle 6 extends to a position covering the tuning screw hole 5f, and when viewed in the axial direction L (see FIG. 1C) of the tuning screw hole 5f, A head locking portion 6g formed in the first arm portion 6a and a tuning screw hole 5f of the slider 5 overlap each other. In the first embodiment, the axial direction L of the tuning screw hole 5f substantially coincides with the unit vertical direction Z3. The tuning screw 7 is inserted into the head locking portion 6g, and the tip portion is screwed into the tuning screw hole 5f.

  In this state, when the string S is hung on the string hanging portion 6f of the saddle 6, the string hanging portion 6f swings toward the base body portion 2A due to the pressure of the string S, and the first arm portion 6a moves from the base body portion 2A. Swings to the far side. At this time, the slider 5 screwed to the tip end of the tuning screw 7 locked to the head locking portion 6g is pulled upward (head locking portion 6g side). The thin portion 2c provided in the groove 2a contacts the lower body portion 5e of the slider 5, and the upward movement of the slider 5 (the head locking portion 6g side) is restricted. For this reason, the saddle 6 stops in a posture that is inclined according to the screwing amount of the tuning screw 7. That is, the saddle 6 is fixed to the slider 5 in a predetermined swinging posture by the tuning screw 7, and the string hanging portion is adjusted by adjusting the screwing amount of the tuning screw 7 into the tuning screw hole 5f. It has a structure that can adjust the position (string height) in the vertical direction Z3 of the unit 6f.

  As described above, the string adjustment mechanism 1A (base plate 2, slider 5, saddle 6, tuning screw 7, and position adjustment screw 8) provided in the tremolo unit 1 of the first embodiment is in contact with the base body 2A. The head of the tuning screw 7 is locked to the first arm portion 6 a of the saddle 6 that swings at, and the tip of the tuning screw 7 is screwed and fixed to the slider 5. The slider 5 is attached to the saddle 6 side so as not to be pulled out by the thin portion 2c, and functions as an anchor that regulates the rise of the first arm portion 6a. On the other hand, the other arm portion (second arm portion 6b) of the saddle 6 is provided with a string hanging portion 6f, and is therefore urged downward by the pressure from the string S. As a result, the saddle 6 is inclined in a posture corresponding to the screwing amount of the tuning screw 7, and the height of the string hanging portion 6 f can be adjusted by the tuning screw 7. Further, since the saddle 6 and the slider 5 are connected by the tuning screw 7, the position of the saddle 6 on the base main body 2 </ b> A can be adjusted by the position adjusting screw 8 via the slider 5. Therefore, the string can be stretched while adjusting the tension and the string height of the string S.

  In such a configuration, since the saddle 6 with the string S is always pressed against the base main body 2A, there is little loss of sound transmission, and sound transmission to the body 101 via the base plate 2 can be improved. it can. Further, the saddle 6 is not easily swayed or tilted due to vibration or screw misalignment, and chattering or sound transmission failure due to contact between the saddles 6 or poor contact between the string S and the saddle 6 is unlikely to occur. In addition, since it has a simple structure that adjusts the two screws of the tuning screw 7 and the position adjusting screw 8, the adjustment of the string height and the tension is easy, and the setting is easy. Furthermore, the saddle 6 does not need to be threaded. Therefore, it is possible to use a material that is difficult to thread such as silver or ceramic, and it is possible to use a saddle 6 made of various materials according to a favorite tone. Therefore, it is possible to realize a natural tone that was difficult to achieve with conventional products. In addition, a simple and highly-designed appearance can be realized, which is advantageous for weight reduction.

  In addition, the tremolo unit 1 including the string adjustment mechanism 1A according to the first embodiment can attach the base plate 2 to the body 101 in the same manner as a conventional product, so that it can be easily applied to existing electric guitars and electric bases without post-processing. It can be attached and is highly versatile. In addition, during tremolo operation, the base plate 2 can be swung with the tip of the insertion piece 2f inserted into the insertion groove 4d of the holder 4 as a fulcrum, so there is little fulcrum shift and the pitch deviation caused by tremolo operation is greatly reduced. it can.

  In the first embodiment, the saddle 6 is held in a predetermined swinging posture by the tuning screw 7 and is connected to the slider 5. However, the swinging posture (tilt) of the saddle 6 is used by using a fixture other than the screw. It is good also as a structure which adjusts. Moreover, it is good also as a structure which adjusts the position of the slider 5 on the baseplate 2 using fixing tools other than a screw | thread.

[Embodiment 2 (tremolo unit)]
FIG. 7 is an explanatory diagram of a tremolo unit including a string adjustment mechanism according to the second embodiment. FIG. 7 (a) is a plan view of the tremolo unit, FIG. 7 (b) is a side view of a base plate and a block, and FIG. These are sectional drawings (X8-X8 sectional drawing of Drawing 7 (a)) of a tremolo unit. 8 to 10 are explanatory views showing a part of the components of the tremolo unit, FIG. 8 is an explanatory view of the base plate, FIG. 9 is an explanatory view of the holder, and FIG. 10 is an explanatory view of the saddle. The basic structure of the tremolo unit 11 of the second embodiment is the same as that of the first embodiment, but the adjacent saddles 16 are pressed against the support surfaces having different heights by providing a difference in height on the surface of the base plate 12. And the point which comprised the holder 14 with the plate-shaped holder main body 14A and the stud 14B differs.

  As shown in FIG. 7, the tremolo unit 11 according to the second embodiment includes a base plate 12, a block 13 attached to the back side of the base plate 12, a coil spring 13g (biasing member) attached to the block 13, and the base plate 12 as a body. A holder 14 (support member) that is swingably supported with respect to 101, a slider 15 that slides in a direction in which the string S is stretched along the guide groove 12a formed in the base plate 12, a saddle 16 that hangs the string S, A tuning screw 17 (tuning fixture) for connecting the saddle 16 to the slider 15, a position adjusting screw 18 (position adjusting fixture) for adjusting the position of the slider 15, and a tremolo arm 19 are provided. The string adjustment mechanism 11A (base plate 12, slider 15, saddle 16, tuning screw 17, and position adjustment screw 18) of the tremolo unit 11 adjusts the inclination of the saddle 16 by the tuning screw 17 and adjusts the string height as in the first embodiment. In addition, the position of the slider 15 on the base plate 12 is adjusted by the position adjusting screw 18 to adjust the posture and position of the saddle 16 connected to the slider 15 to adjust the tension of the string S. is there.

  Hereinafter, differences from the tremolo unit 1 of the first embodiment will be mainly described, and description of the same parts will be omitted. 8A is a side view of the base plate 12, FIG. 8B is a cross-sectional view of the base plate 12 (X9-X9 cross-sectional view of FIG. 8A), and FIG. 8C is a base plate viewed from the holder 14 side. FIG. 8D is a sectional view of the base plate 12 (YY sectional view of FIG. 8A), and FIG. 8E is a rear view of the base plate 12. FIG. As shown in FIGS. 7 and 8, the base plate 12 includes a base body 12A and a rising part 12B. The rising portion 12B according to the second embodiment is provided with a recess that accommodates the head of the position adjusting screw 18 in the position adjusting screw locking hole 12e, and is formed on the surface of the base body 12A, which will be described later. It is formed in the same manner as in the first embodiment except that the height of the position adjusting screw locking hole 12e (the position in the unit vertical direction Z3) differs according to the height difference.

  The base body portion 12A has six linear guide grooves 12a and three screw holes 12h. The positions and shapes of the guide groove 12a and the screw hole 12h are the same as those in the first embodiment. Similarly, the arm attachment hole 12g is formed at one end of the base body 12A in the unit width direction Z1, and the tremolo arm 19 is attached thereto. On the other hand, in the base body portion 12A, insertion pieces 12f are formed at both ends of the long side far from the rising portion 12B. The cross-sectional shape of the insertion piece 12f is the same as that of the first embodiment, but in the second embodiment, an arcuate notch 12j is formed at the center of the insertion piece 12f in the unit width direction Z1.

  As shown in FIG. 7A, six saddles 16 are arranged in the unit width direction Z1 on the surface of the base main body 12A, as in the first embodiment. In the second embodiment, as shown in FIG. 8A, a step is formed between adjacent saddles 16 on the surface of the base body 12A, and the surface of the base body 12A has five different heights. It is divided into support surfaces E1 to E5.

  The support surfaces E1 to E5 are arranged in the arrangement direction of the saddles 16 and are formed so as to have a height difference from the support surfaces in adjacent positions. The support surface E3 located at the center in the unit width direction Z1 is the highest support surface, and the two saddles 16 are placed thereon. Further, the two support surfaces E2 and E4 on both sides thereof are lower than the support surface E3, and one saddle 16 is placed on each of them. The support surface E1 located on the outer side in the width direction of the support surface E2 and the support surface E5 located on the outer side in the width direction of the support surface E4 are regions that are one step lower than the support surfaces E2 and E4. Are listed one by one. As described above, in the second embodiment, the region (support surface) on which the adjacent saddle 16 is placed is partitioned by the step.

  As shown in FIGS. 7A to 7C, the block 13 is urged by a coil spring 13g as in the first embodiment. The block 13 is formed in the same manner as the block 3 of the first embodiment except that the portion in which the arm attachment hole 13f is formed has a short size in the unit vertical direction Z3 and the arm attachment hole 13f penetrates this portion. ing. In addition, although the figure which shows the block 13 single-piece | unit is abbreviate | omitted in this specification, the block 33 shown in FIG. 17 of Embodiment 4 mentioned later is the same shape as the block 13. FIG.

  9A is a plan view of the holder main body 14A, FIG. 9B is a cross-sectional view of the holder main body 14A (X10-X10 cross-sectional view of FIG. 9A), and FIG. 9C is a side view of the holder main body 14A. FIG. 9 (a side view seen from the base plate 12 side) and FIG. 9D are side views of the stud 14B. As shown in FIGS. 7 and 9, the holder 14 includes an elongated plate-like holder body 14A extending in the unit width direction Z1, and stud mounting holes 14f formed in the thick portions 14a at both ends in the longitudinal direction of the holder body 14A. A stud 14B is provided. A fixing hole 14d is formed in the center portion of the holder body 14A in the longitudinal direction. The holder body 14A is fixed to the body 101 by screwing a fixing screw (not shown) into the fixing hole 14d.

  The thick portion 14a of the holder main body 14A is formed with a concave portion 14g that opens to the side surface facing the base plate 12 side. Moreover, the hollow 14e is formed in the outer peripheral surface of stud 14B over the perimeter. The cross-sectional shape of the recess 14e is a wedge shape. When the stud 14B is attached to the stud attachment hole 14f, the recess 14e is exposed in the recess 14g. Therefore, as shown in FIG. 7 (c), the base plate 12 can swing to the holder 14 by inserting the two insertion pieces 12f on the base plate 12 side into the recesses 14e and positioning the stud 14B in the notch 12j. Supported by

  10A is a plan view of the saddle 16, FIG. 10B is a cross-sectional view of the saddle 16 (X11-X11 cross-sectional view of FIG. 10A), and FIG. 10C is a front view of the saddle 16 (strings). It is the figure seen from the hanging part 16f side in the unit front-back direction Z2. The saddle according to the second embodiment includes a first arm portion 16a in which a head locking portion 16g is formed and a second arm portion 16b in which a string hanging portion 16f is formed. The shape of the saddle 16 is almost the same as that of the first embodiment, and the only difference is the shape of the recess 16h that abuts the head of the tuning screw 17. Further, as described above, in the second embodiment, since the heights of the support surfaces E1 to E5 that support the six saddles 16 are different, if the saddles 16 having the same shape are arranged, the heights of the upper ends of the saddles 16 are aligned. Absent. Therefore, by using three types of saddles 16 (16 (1) to 16 (3)) according to the three types of support surfaces E1 to E5, the height of the upper end of the saddle 16 is made uniform. ing.

  The second embodiment includes six sliders 15 arranged in the unit width direction Z1. Since the configuration of each slider 15 is the same as that of the first embodiment, a drawing of a single component and its detailed description are omitted. Each slider 15 is provided with a slider-side screw hole 15c into which the tip of the position adjusting screw 18 is screwed and fixed. By adjusting the screw size of the position adjusting screw 18, the position of the slider 15 and the saddle 16 connected thereto is adjusted. Is made. Further, in the saddle 16 of the second embodiment, the height of the string hanging portion 16f is adjusted by adjusting the screwing dimension of the tuning screw 17. Therefore, as in the first embodiment, the string S can be stretched by adjusting the string height and tension.

  As described above, the string adjustment mechanism 11A (base plate 12, slider 15, saddle 16, tuning screw 17, position adjustment screw 18) and tremolo unit 11 including the same according to the second embodiment have the same functions and effects as those of the first embodiment. In addition, the surface of the base plate 12 is provided with a height difference so that the adjacent saddles 16 are pressed against the support surfaces having different heights, thereby preventing the saddles 16 from rolling. Accordingly, it is possible to further reduce problems caused by rolling and further reduce chatter noise and sound transmission failure.

[Embodiment 3 (Bridge)]
11A and 11B are explanatory views of a bridge provided with the string adjusting mechanism of the third embodiment. FIG. 11A is a plan view of the bridge, and FIG. 11B is a cross-sectional view of the bridge (X12-X12 in FIG. FIG. 11C is a side view of the base plate and the fixing screw. 12 to 14 are explanatory views of the components of the bridge, FIG. 12 is an explanatory view of the base plate, FIG. 13 is an explanatory view of the saddle, and FIG. 14 is an explanatory view of the slider. The bridge 21 of the third embodiment is a fixed unit for stretching the string S of the electric bass, and is fixed to the body 101A of the electric bass. In the third embodiment, the same mechanism as the string adjusting mechanisms 1A and 11A of the first and second embodiments is applied to the bridge 21 of the electric base.

  The bridge 21 hangs the string S, a base plate 22, a fixing screw 23 that screws the base plate 22 to the body 101A, a slider 25 that slides in the direction of stretching the string S along the guide groove 22a formed in the base plate 22. A saddle 26, a tuning screw 27 (tuning fixture) for connecting the saddle 26 to the slider 25, and a position adjusting screw 28 (position adjusting fixture) for adjusting the position of the slider 25 are provided. The string adjusting mechanism 21A (base plate 22, slider 25, saddle 26, tuning screw 27, position adjusting screw 28) of the bridge 21 adjusts the inclination of the saddle 26 by the tuning screw 27 as in the first and second embodiments. This is a mechanism for adjusting the tension of the string S by adjusting the position of the saddle 26 connected to the slider 25 by adjusting the height and further adjusting the position of the slider 25 on the base plate 22 by the position adjusting screw 28. .

  12A is a plan view of the base plate 22, FIGS. 12B and 12C are cross-sectional views of the base plate 22 (X13-X13 cross-sectional view of FIG. 22A, Y1-Y1 cross-sectional view), FIG. 12D. ) Is a rear view of the base plate 22. As shown in FIGS. 11 and 12, the base plate 22 includes a substantially rectangular flat plate-shaped main body 22A that contacts the surface of the body 101A, and a rising portion 22B that rises vertically from one long side of the base body 22A. . Four guide grooves 22a are formed in the base body 22A. The guide groove 22a includes through portions 22b and 22c penetrating the base body portion 22A, and a thin portion 22d (position restricting portion) surrounding the through portions 22b and 22c. The through portion 22b is formed at the end portion of the guide groove 22a on the rising portion 22B side, and the through portion 22c is formed at the opposite end portion. The back side of the thin portion 22d is recessed to a certain depth from the back surface (surface on the body 101A side) side of the base body portion 22A.

  Screw holes 22h are formed in the base body portion 22A at a total of five locations between the four guide grooves 22a and on the outer side in the width direction of the guide grooves 22a. The base plate 22 is fixed to the body 101A by fixing the fixing screws 23 to all or a part of the five screw holes 22h. Since the head of the fixing screw 23 is housed in a recess formed around the screw hole 22h, it does not protrude from the surface of the base main body 22A. The rising portion 22B is formed with a string locking hole 22j on an extension line of the guide groove 22a.

  As shown in FIG. 11A, four saddles 26 are arranged in the unit width direction Z1 on the surface of the base main body 22A. In Embodiment 3, as shown to Fig.12 (a), the surface of 22 A of base main-body parts is divided into three support surfaces E11-E13 with a height difference. Specifically, the support surfaces E11 and E13 on which the two saddles 26 arranged at both ends are placed are formed one step lower than the support surface E12 on which the two center saddles 26 are placed. The outer sides in the width direction of the support surfaces E11 and E13 are edge portions having the same height as the support surface E12.

  As shown in FIG. 11A, in the third embodiment, as the saddle 26 used for the bridge 21, two kinds of saddles 26A having an asymmetric shape in the unit width direction Z1 and saddles 26B having an inverted shape are used. A saddle 26A is placed side by side on the support surfaces E11 and E12, and another type of saddle 26B is placed side by side on the support surfaces E12 and E13. 13A and 13B are plan views of the saddles 26A and 26B, respectively, and FIG. 13C is a side view of the saddle 26B. FIGS. 13D and 13E are front views of the saddles 26A and 26B (viewed from the unit front-rear direction Z2), respectively, and FIG. 13F is a perspective view of the saddle.

  As shown in FIGS. 11 and 13, the saddles 26A and 26B include a first arm portion 26a extending in the unit front-rear direction Z2 toward the rising portion 22B and a second arm portion 26b extending on the opposite side to the rising portion 22B. Prepare. The first arm portion 26a is formed to be biased toward one side in the unit width direction Z1, and the arrangement of the first arm portion 26a is reversed between the saddle 26A and the saddle 26B. Projections 26d are formed in the lower portions of the saddles 26A and 26B (parts on the base body portion 22A side). A tip 26e (contact portion) of the protruding portion 26d forms a ridge line extending in a straight line in the unit width direction Z1, and is in contact with the base body portion 22A. The saddles 26A and 26B are arranged so that the first arm portion 26a and the second arm portion 26b swing around the tip 26e of the protruding portion 26d.

  A string hanging portion 26f is formed at the center of the second arm portion 26b in the unit width direction Z1. On the other hand, a head locking portion 26g is formed at a position near the tip of the first arm portion 26a. The head locking portion 26g is a through hole that penetrates the first arm portion 26a in the unit vertical direction Z3. The upper surfaces of the saddles 26A and 26B have a shape in which the first arm portion 26a side is recessed. The head of the tuning screw 27 is locked to the head locking portion 26g, and the tip of the tuning screw 27 is screwed into the tuning screw hole 25f of the slider 25.

  FIG. 14A is a plan view of the slider 25, and FIG. 14B is a side view of the slider 25. As shown in FIG. 11A, the bridge 21 includes four sliders 25 arranged in the unit width direction Z1. Each slider 25 is mounted in the guide groove 22a and is slidable in the unit longitudinal direction Z2 along the guide groove 22a. As shown in FIGS. 11 and 14, the slider 25 includes a slider main body 25a extending in the unit front-rear direction Z2, and a connecting portion 25b protruding from the end of the slider main body 25a on the rising portion 22B side. A tuning screw hole 25f is formed in the connecting portion 25b. In the third embodiment, the axial direction L1 of the tuning screw hole 25f is inclined by a predetermined angle (for example, 18 °) with respect to the unit vertical direction Z3. A slider-side screw hole 25c is formed at the end of the slider main body 25a opposite to the rising portion 22B. When the slider 25 is mounted in the guide groove 22a, the connecting portion 25b is disposed in the through portion 22b of the guide groove 22a, and the slider-side screw hole 25c is disposed in the through portion 22c of the guide groove 22a. The position of the slider 25 is fixed by screwing the position adjustment screw 28 into the slider-side screw hole 25c and tightening.

  In the slider body 25a, a portion between the connecting portion 25b and the slider-side screw hole 25c is disposed below the thin portion 22d of the base body 22A. When the string S is hung on the string hanging portion 26f of the saddle 26A (26B), the string hanging portion 26f swings toward the base body portion 22A due to the pressure of the string S, and the first arm portion 26a moves away from the base body portion 22A. Swing to the side. At this time, the slider 25 screwed to the tip end of the tuning screw 27 locked to the head locking portion 26g is pulled upward (head locking portion 26g side). Since the thin-walled portion 22d of the main body portion 22A restricts the upward movement of the slider 25 (the head engaging portion 26g side), the saddle 26A (26B) is inclined according to the screwing amount of the tuning screw 27. Stop at. That is, by adjusting the screwing amount of the tuning screw 27 into the tuning screw hole 25f, the position (string height) of the string hanging portion 26f in the unit vertical direction Z3 can be adjusted.

  As described above, the string adjusting mechanism 21A (base plate 22, slider 25, saddle 26 (26A, 26B), tuning screw 27, position adjusting screw 28) provided on the bridge 21 of the third embodiment is the same as that of the first and second embodiments. Similarly, the saddles 26A and 26B are always pressed against the base plate 22, and sound transmission is good. Further, the saddles 26A and 26B are less likely to roll or tilt due to vibration or screw misalignment, and chattering or poor sound transmission is unlikely to occur even when intense vibrations of the base string are applied. Furthermore, when used as the bridge 21, it can be attached to the existing electric base body 101A without any post-processing, and is highly versatile. In addition, since the structure is simple, it is easy to adjust the string height and tension, and it is possible to realize a simple and highly-designed appearance. Furthermore, since the saddles 26A and 26B can be formed of various materials, a favorite tone can be realized.

[Embodiment 4 (tremolo unit including a fine tuning mechanism)]
FIG. 15 is an explanatory view of a tremolo unit including a string adjustment mechanism (fine tuning mechanism) according to a fourth embodiment, FIG. 15 (a) is a plan view of the tremolo unit, FIG. 15 (b) is a side view of a base plate and a block, FIG.15 (c) is sectional drawing (X14-X14 sectional drawing of Fig.15 (a)) of a tremolo unit. 16 to 19 are explanatory views showing some of the components of the tremolo unit. FIG. 16 is an explanatory view of the base plate, FIG. 17 is an explanatory view of the block, FIG. 18 is an explanatory view of the saddle, and FIG. It is explanatory drawing of a slider. The tremolo unit 31 of the fourth embodiment is formed in the same manner as in the second embodiment except for the structure of the saddle 36 and the support structure of the base plate 32.

  As shown in FIG. 15, the tremolo unit 31 according to the fourth embodiment includes a base plate 32, a block 33 attached to the back side of the base plate 32, a coil spring 33 g (biasing member) attached to the block 33, and the base plate 32. A stud 34 (string height adjusting screw) that is swingably supported with respect to 101, a slider 35 that slides in a direction in which the string S is stretched along a guide groove 32a formed in the base plate 32, and a saddle 36 that hangs the string S And a tuning screw 37 (tuning fixture) for connecting the saddle 36 to the slider 35, a position adjusting screw 38 (position adjusting fixture) for adjusting the position of the slider 35, and a tremolo arm 39. The tremolo unit 31 includes a fine tuning mechanism 31A (string adjusting mechanism) including a base plate 32, a slider 35, a saddle 36, a tuning screw 37, a position adjusting screw 38, and the like. As will be described later, the fine tuning mechanism 31A is a mechanism for finely adjusting the tension of the string S without changing the string height. The string height adjustment of the tremolo unit 31 of the fourth embodiment is performed by adjusting the overall height of the base plate 32 by changing the screwing amount of a stud 34 described later.

  Hereinafter, differences from the tremolo unit 11 of the second embodiment will be mainly described, and description of the same parts will be omitted. 16A is a side view of the base plate 32, FIG. 16B is a cross-sectional view of the base plate 32 (X15-X15 cross-sectional view of FIG. 16A), and FIG. 16C is a base plate viewed from the stud 34 side. FIG. 16D is a cross-sectional view of the base plate 32 (Y2-Y2 cross-sectional view of FIG. 16A), and FIG. 16E is a back view of the base plate 32. FIG. As shown in FIGS. 15 and 16, the base plate 32 includes a base body portion 32A and a rising portion 32B. As can be seen by comparing FIG. 8 and FIG. 16, the base plate 32 of the fourth embodiment is the same as the base plate 12 of the second embodiment.

  That is, six linear guide grooves 32a, three screw holes 32h, and arm attachment holes 32g are formed in the base body portion 32A. A tremolo arm 39 is attached to the arm attachment hole 32g. In addition, two insertion pieces 32f having a wedge-like vertical cross-sectional shape are formed in the base body portion 32A, and an arcuate cutout 32j is formed at the tip of the insertion piece 32f. Further, a position adjusting screw locking hole 32e is formed in the rising portion 32B.

  As shown in FIG. 15A, six saddles 36 are arranged in the unit width direction Z1 on the surface of the base body portion 32A. As shown in FIG. 16A, the surface of the base main body 32A is partitioned into support surfaces E21 to E25 having different heights as in the second embodiment. The support surface E23 located at the center in the unit width direction Z1 is the highest, and two saddles 36 are mounted thereon. The support surfaces E22 and E24 on both sides thereof are one step lower than the support surface E23, and one saddle 36 is placed on each. Further, the support surfaces E21 and E25 on the outer side in the width direction are further lowered, and similarly, saddles 36 are placed one by one. As will be described later, the saddle 36 of the fourth embodiment is a connecting member including a first saddle 36A and a second saddle 36B.

  17A is a plan view of the block 33, FIGS. 17B and 17C are cross-sectional views of the block 33 (X16-X16 cross-sectional view and X17-X17 cross-sectional view of FIG. 17A), FIG. ) Is a side view of the block 33. As shown in this figure, the block 33 has the same shape as the block 13 (see FIG. 7) of the second embodiment. That is, the block 33 includes three screw holes 33b that overlap the screw holes 32h of the base body portion 32A, six string locking holes 33c and six recesses 33d that overlap the guide grooves 32a of the base body portion 32A, and the base body. An arm attachment hole 33f that overlaps with the arm attachment hole 32g of the portion 32A is formed.

  As shown in FIG. 15 (c), a head 34a is formed at the upper end of the stud 34, and a recess 34b is formed on the entire outer peripheral surface of the portion immediately below the head 34a. The cross-sectional shape of the recess 34b is the same wedge shape as the recess 14e of the stud 14B of the second embodiment. A portion further below the depression 34b is a screw portion 34c. The tremolo unit 31 includes two studs 34, which are screwed into the body 101 by being screwed into screw holes formed in the body 101. The base plate 32 is swingably supported by the stud 34 by inserting the two insertion pieces 32f on the base plate 32 side into the recesses 34b of the two studs 34 and positioning the recess 34b in the notches 32j. Although only one stud 34 is shown in FIG. 15A, the base plate 32 is actually supported by the two studs 34.

  The saddle 36 of the fourth embodiment includes a first saddle 36A and a second saddle 36B, and a support shaft 36C that couples them. 18A is a plan view of the second saddle 36B, and FIG. 18B is a cross-sectional view of the second saddle 36B (X18-X18 cross-sectional view of FIG. 18A). FIG. 18C is a plan view of the first saddle 36A, and FIG. 18D is a cross-sectional view of the first saddle 36A (X19-X19 cross-sectional view of FIG. 18C). FIG. 18E is a plan view of the entire saddle 36. The lower end surface 36n (contact portion) of the first saddle 36A is a flat surface. The first saddle 36A is placed on the base body 32A with the lower end surface 36n abutting against the surface of the base body 32A (see FIG. 15C). The first saddle 36A is formed with a recess 36k for mounting the support shaft 36C, and a string hanging portion 36m protruding above the unit (the side opposite to the base main body portion 32A). The first saddle 36A supports the second saddle 36A in a swingable manner via a support shaft 36C attached to the recess 36k.

  The second saddle 36B is attached so as to swing around an end portion through which the support shaft 36C is inserted. The second saddle 36B includes a first arm portion 36a that extends on the opposite side to the first saddle 36A, and a head locking portion 36g is formed at the tip thereof. Further, a string passage hole 36c and a string hanging part 36f (second string hanging part) are formed between the head locking part 36g and the first saddle 36A. The string hanging portion 36f is an upper portion of a portion where the support shaft 36C is inserted in the second saddle 36b, and the surface thereof has an upward curved shape connected to the inner surface of the string passage hole 36c.

  19A is a plan view of the slider 35, FIG. 19B is a cross-sectional view of the slider 35 (X20-X20 cross-sectional view of FIG. 19A), and FIG. 19C is viewed in the unit longitudinal direction Z2. It is a side view (seen from the side opposite to the screw fixing portion 35b) of the slider 35. Similar to the second embodiment, the tremolo unit 31 includes six sliders 35 arranged in the unit width direction Z1 (see FIG. 15). In the slider 35 of the fourth embodiment, the position of the tuning screw hole 35f is closer to the screw fixing portion 35b than in the second embodiment, and the axial direction L2 of the tuning screw hole 35f is a predetermined angle with respect to the unit vertical direction Z3 ( For example, it is formed in the same manner as the sliders 5 and 15 of the first and second embodiments except that it is inclined.

  The slider 35 includes a slider-side screw hole 35c into which the position adjusting screw 38 is screwed. The slider 35 is fixed to an arbitrary position within the slide range by adjusting the screwing amount of the position adjusting screw 38. On the other hand, the slider 35 locks the head of the tuning screw 37 to the head locking portion 36g of the second saddle 36B, and the second end of the tuning screw 37 is screwed into the tuning screw hole 35f. It is connected to the saddle 36B. The first arm portion 36a of the second saddle 36B extends to a position covering the tuning screw hole 35f. When viewed in the axial direction L2 of the tuning screw hole 35f, the head locking portion 36g and the slider 35 are provided. The slider 35 and the second saddle 36B are positioned so that the tuning screw hole 35f overlaps.

  In the fine tuning mechanism 31A, the string S drawn out from the string passage hole 36c of the second saddle 36B is hung at two places: a string hanging portion 36f of the second saddle 36B and a string hanging portion 36m of the first saddle 36A. The string height does not change because the height of the string hanging portion 36m of the first saddle 36A does not change, but by adjusting the inclination of the string hanging portion 36f formed on the second saddle 36B by the tuning screw 37, the string S Fine-tune the tension. That is, in the second saddle 36B, when the pressure of the string S is applied to the string hanging portion 36f, the string hanging portion 36f is pushed to the side opposite to the first arm portion 36a, so that the first arm portion 36a is the base main body portion 32A. Rocks away from the side. At this time, the slider 35 is pulled upward (on the head locking portion 36g side) via the tuning screw 37. Since the slider 35 functions as an anchor as in the first and second embodiments, the second saddle 36B The inclination is in accordance with the screwing amount of the tuning screw 37. Therefore, the tension of the string S can be finely adjusted by adjusting the inclination of the string hanging portion 36f.

  As described above, the string height adjustment of the tremolo unit 31 is performed by adjusting the overall height of the base plate 32 by changing the screwing amount of the stud 34, whereby the six saddles 36 have the string hanging portions of the first saddle 36A. This is done by changing the height of 36 m collectively and adjusting the string heights of the six strings S together.

  As described above, the fine tuning mechanism 31A of the fourth embodiment has good sound transmission because the saddle 36 for hanging the string S is constantly pressed against the base plate 32, as in the above embodiments. In addition, the saddle 36 is unlikely to be shaken or tilted due to vibration or poor screw adjustment, and chattering or sound transmission failure due to poor contact between the saddles 36 or poor contact between the string S and the saddle 36 is unlikely to occur. In addition, since it has a simple structure that adjusts the two screws of the tuning screw 37 and the position adjusting screw 38, fine adjustment of the tension is easy. Further, the saddle 36 (the first saddle 36A and the second saddle 36B) need not be threaded. Accordingly, it is also possible to use a material that is difficult to thread, such as silver or ceramic, and the saddle 36 can be formed from various materials according to a favorite tone color. Therefore, it is possible to realize a natural timbre that was difficult to realize with conventional products, and to realize a favorite timbre. In addition, a simple and highly-designed appearance can be realized, which is advantageous for weight reduction.

  Further, when the fine tuning mechanism 31A of the fourth embodiment is used for the tremolo unit 31, it can be attached to the body 101 of an existing electric guitar without any post-processing, and is highly versatile. Further, during tremolo operation, the base plate 32 can be shaken with the tip of the insertion piece 32f inserted into the recess 34b of the stud 34 as a fulcrum, so there is little shift of the fulcrum and it is possible to greatly reduce the pitch deviation caused by the tremolo operation.

(Symbol of Embodiment 1)
DESCRIPTION OF SYMBOLS 1 ... Tremolo unit, 1A ... String adjustment mechanism, 2 ... Base plate, 2A ... Base body part, 2B ... Stand-up part, 2a ... Guide groove, 2b ... Through part, 2c ... Thin part (position control part), 2d ... Step part 2e ... Position adjusting screw locking hole, 2f ... Insertion piece, 2g ... Arm mounting hole, 2h ... Screw hole, 3 ... Block, 3a ... End face, 3b ... Screw hole, 3c ... String locking hole, 3d ... Recess 3e ... side face, 3f ... arm mounting hole, 3g ... coil spring (biasing member), 4 ... holder (supporting member), 4a ... thick part, 4b ... thin part, 4c ... fixing hole, 4d ... insertion groove 5 ... Slider, 5a ... Slider body, 5b ... Screw fixing portion, 5c ... Slider side screw hole, 5d ... Upper body, 5e ... Lower body, 5f ... Tuning screw hole, 6 ... Saddle, 6a ... First arm Part, 6b ... second arm part, 6c ... string through hole, 6d ... projecting part 6e ... tip (contact portion), 6f ... string hanging portion, 6g ... head locking portion, 6h ... recess, 7 ... tuning screw (tuning fixture), 8 ... position adjusting screw (position adjusting fixture) , 9 ... Tremolo arm, L ... Axial direction (reference numeral of the second embodiment)
DESCRIPTION OF SYMBOLS 11 ... Tremolo unit, 11A ... String adjustment mechanism, 12 ... Base plate, 12A ... Base body part, 12B ... Stand-up part, 12a ... Guide groove, 12e ... Position adjustment screw locking hole, 12f ... Insertion piece, 12g ... Arm attachment Hole, 12h ... Screw hole, 12j ... Notch, 13 ... Block, 13g ... Coil spring (biasing member), 13f ... Arm mounting hole, 14 ... Holder (support member), 14A ... Holder body, 14B ... Stud, 14a ... Thick part, 14d ... Fixing hole, 14e ... Depression, 14f ... Stud mounting hole, 14g ... Recess, 15 ... Slider, 15c ... Slider side screw hole, 16, 16 (1) -16 (3) ... Saddle, 16a ... 1st arm part, 16b ... 2nd arm part, 16f ... String hanging part, 16g ... Head locking part, 16h ... Recessed part, 17 ... Tuning screw (fixing tool for tuning), 8 ... position adjusting screw (alignment fixture), 19 ... tremolo arm, E1 to E5 ... support surface (sign of Embodiment 3)
21 ... Bridge, 21A ... String adjustment mechanism, 22 ... Base plate, 22A ... Base body, 22B ... Rising part, 22a ... Guide groove, 22b, 22c ... Penetration part, 22d ... Thin part (position regulating part), 22h ... Screw Hole, 22j ... string locking hole, 23 ... fixing screw, 25 ... slider, 25a ... slider body, 25b ... connecting part, 25c ... slider side screw hole, 25f ... tuning screw hole, 26, 26A, 26B ... saddle , 26a ... first arm portion, 26b ... second arm portion, 26d ... protruding portion, 26e ... tip (contact portion), 26f ... string hanging portion, 26g ... head locking portion, 27 ... tuning screw (for tuning) Fixing tool), 28 ... Position adjusting screw (fixing tool for position adjustment), E11 to E13 ... Support surface, L1 ... Axial direction (reference numeral of embodiment 4)
31 ... Tremolo unit, 31A ... Fine tuning mechanism (string adjustment mechanism), 32 ... Base plate, 32A ... Base body, 32B ... Rising part, 32a ... Guide groove, 32e ... Position adjusting screw locking hole, 32f ... Insertion piece 32g ... arm mounting hole, 32h ... screw hole, 32j ... notch, 33 ... block, 33b ... screw hole, 33c ... string locking hole, 33d ... recess, 33f ... arm mounting hole, 33g ... coil spring (biasing) Member), 34 ... Stud (string height adjusting screw), 34a ... head, 34b ... hollow, 34c ... screw part, 35 ... slider, 35b ... screw fixing part, 35c ... slider side screw hole, 35f ... tuning screw hole 36 ... saddle, 36A ... first saddle, 36B ... second saddle, 36C ... support shaft, 36a ... first arm, 36c ... string through hole, 36f ... string hook (first ), 36 g... Head locking portion, 36 k... Recess, 36 m .. string hanging portion, 36 n .. abutment surface (abutment portion), 37 .. tuning screw (tuning fixture), 38. Screw (position adjustment fixture), 39 ... tremolo arm, E21-25 ... support surface, L2 ... axial direction (other symbols)
DESCRIPTION OF SYMBOLS 100 ... Electric guitar, 101, 101A ... Body, 101a ... Recessed part, 101b ... Coil spring, 102 ... Neck, 103 ... Peg, 104 ... Tremolo unit, 105 ... String, 106 ... Base, 106a ... Base body, 106b ... Vertical part, 107: Block, 107a: Locking hole, 108: Saddle, 108a ... String hook, 109 ... Tremolo arm, 110 ... Position adjusting screw, 111 ... String height adjusting screw, S ... String, Z1 ... Unit width direction, Z2 ... Unit front-rear direction, Z3: Unit vertical direction

Claims (10)

A base plate attached to the body of an electric guitar or electric bass;
A slider attached to the base plate in a slidable manner along the direction of the string;
A position adjusting fixture for fixing the slider to the base plate at a predetermined slide position;
A saddle mounted on the base plate in a swingable state with the contact portion serving as a fulcrum, the contact portion being capable of contacting the base plate and a string hanging portion for hanging the string;
A string adjusting mechanism comprising: a tuning fixture for fixing the saddle to the slider in a predetermined swinging posture. The position adjusting fixture is a position adjusting screw;
The tuning fixture is a tuning screw,
The saddle includes a head locking portion that locks the head of the tuning screw,
The base plate includes a guide groove for guiding the slider in a sliding direction and a position restricting portion for preventing the slider from moving toward the head locking portion.
The string adjustment mechanism according to claim 1, wherein the slider includes a tuning screw hole into which the tuning screw can be screwed and fixed. The saddle and the slider are arranged in a predetermined number in the arrangement direction intersecting the sliding direction of the slider,
The base plate includes a plurality of support surfaces arranged in the arrangement direction, and each of the plurality of support surfaces is formed to have a height difference from the support surface in an adjacent position,
The string adjusting mechanism according to claim 1, wherein the contact portion of the saddle is pressed against each of the plurality of support surfaces. The string adjustment mechanism according to any one of claims 1 to 3,
A support member for swingably supporting the base plate of the string adjustment mechanism with respect to the body;
A biasing member that biases the base plate in a direction opposite to a swinging direction of the base plate by a pressing force from the string applied to the base plate via the saddle;
A tremolo unit comprising a tremolo arm connected to the base plate. The support member is a holder fixed to the body;
An insertion groove is formed in the holder,
The tremolo unit according to claim 4, wherein an insertion piece to be inserted into the insertion groove is formed on the base plate. The string adjustment mechanism according to any one of claims 1 to 3,
A bridge comprising a fixing screw for screwing the base plate of the string adjusting mechanism to the body. A base plate attached to the body of an electric guitar or electric bass;
A slider attached to the base plate in a slidable manner along the direction of the string;
A position adjusting fixture for fixing the slider to the base plate at a predetermined slide position;
A first saddle comprising a contact portion that contacts the base plate and a string hanging portion that hangs the string;
A second saddle that is swingably supported by the first saddle mounted on the base plate and includes a second string hanging portion for hanging the string;
A string adjusting mechanism, comprising: a tuning fixture for fixing the second saddle to the slider in a predetermined swinging posture. The position adjusting fixture is a position adjusting screw;
The tuning fixture is a tuning screw,
The second saddle includes a head locking portion that locks the head of the tuning screw,
The base plate includes a guide groove for guiding the slider in a sliding direction and a position restricting portion for preventing the slider from moving toward the head locking portion.
The string adjusting mechanism according to claim 7, wherein the slider includes a tuning screw hole into which the tuning screw can be screwed and fixed. The first saddle, the second saddle, and the slider are arranged in a predetermined number in the arrangement direction intersecting the sliding direction of the slider,
The base plate includes a plurality of support surfaces arranged in the arrangement direction, and each of the plurality of support surfaces is formed to have a height difference from the support surface in an adjacent position,
The string adjusting mechanism according to claim 7 or 8, wherein the contact portion of the first saddle is pressed against each of the plurality of support surfaces. The string adjustment mechanism according to any one of claims 7 to 9,
A string height adjusting screw screwed into the body;
A biasing member that biases the base plate in a direction opposite to a swinging direction of the base plate by a pressing force from the string applied to the base plate via the first saddle and the second saddle;
A tremolo arm connected to the base plate,
A depression is formed on the outer peripheral surface of the string height adjusting screw,
The tremolo unit, wherein the base plate is formed with an insertion piece to be inserted into the recess.

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