Erhu fine tuning string device and Erhu with fine tuning string
By designing the Erhu fine-tuning device, using the combined structure of the adjustment screw and the chord adjusting rod, the secondary fine-tuning of the string tension is achieved, which solves the problem that the secondary fine-tuning cannot be achieved in the existing technology, and improves the stability of the performance Sex and sound quality.
Patent Information
- Application Number
- CN202420484771.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The existing erhu string tuning technology cannot achieve secondary fine-tuning when the string tension decreases, which affects the performance effect.
A erhu fine-tuning string device is designed, including an adjustment screw, a moving block and a chord. By rotating the adjustment screw, the chord rod extends out to support the strings, achieving secondary fine-tuning of the strings, and providing adaptive adjustment through the spring. Function.
The device allows precise fine-tuning of string tension during use, solving the problem of reduced string tension and improving performance stability and sound quality.
Smart Images
Figure CN222319734U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of erhu tuning, and in particular relates to an erhu fine-tuning device and an erhu capable of fine-tuning its strings. Background Art
[0002] At present, some national stringed instruments such as erhu need to change the pitch during the accompaniment process. There are two ways: one is to stop the accompaniment when the pitch needs to be changed, and use a fixed instrument to tune the pitch repeatedly by rotating the string axis. This tuning is slow and requires sound, which affects the performance effect; the other way is to replace a pre-prepared instrument with another pitch when the pitch needs to be changed. Although this is faster, it is necessary to prepare several identical instruments when playing, which is wasteful and inconvenient. In the patent application number CN902206184, a tuning and pitch changer for erhu is disclosed, which relates to the field of musical instruments and is mainly used for tuning and pitch change of erhu during performance. The technology consists of an adjustment knob, a worm gear, a scale plate, a sleeve, and a string hanging post. It is installed on the erhu. The fixed instrument tuner is no longer needed for tuning and pitch change in the middle, which overcomes the disadvantage that the erhu used to have to tune the string in the middle and affect the performance. The technology has the advantages of fast tuning and pitch change (it can be completed once in 5 seconds), accuracy, simple structure, and easy use. In the patent application number CN012446297, a huqin string enhancer is disclosed which is realized by the following scheme: the huqin string enhancer structure includes an outer shell, a fastening ring, an inner sleeve (frame), a worm gear assembly frame, a worm, a worm wheel, a worm knob, and a string winding axis; a fastening ring is installed on one side of the outer shell to clamp and fix the huqin string enhancer on the instrument bar. An inner sleeve (frame) is installed in the outer shell, a worm wheel is installed in the inner sleeve (frame), the worm and worm wheel are assembled on the worm gear assembly frame, the worm gear assembly frame is fixed on the inner sleeve side, a string winding axis is installed on the worm wheel shaft, a worm knob is installed at one end of the worm, and when the knob is turned, the worm drives the worm wheel to rotate, and the worm wheel shaft drives the string winding axis to rotate, so as to adjust the tightness of the string wound on the string winding axis. The huqin string amplifier adopts a worm gear transmission mechanism. The overall structure is compact and beautiful, easy to assemble, and the use process is simple and sensitive. The huqin string amplifier can be easily installed on the original two-string string instrument, and the existing two-string instrument can be transformed into a three-string instrument. With the help of a special bridge, through proper practice, you can play a wider range of pure, beautiful and varied piano sounds.
[0003] However, during the use of the strings, the tension of the strings will loosen with the use process and the increase of ambient temperature. The above two methods are only one-time adjustments for fine-tuning, and secondary fine-tuning is not possible. Utility Model Content
[0004] The purpose of the utility model is to provide a precisely tuned erhu to solve the above problems existing in the prior art.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a device for fine tuning strings of an erhu, comprising a device body and a fixing mechanism connected to the device body and used for connecting with a rod of the erhu, the device body comprising a shell, a screw hole is arranged on a side of the shell, an adjusting screw is threadedly connected to the screw hole, the adjusting screw is arranged from the outside of the shell to the inside of the shell, one end of the adjusting screw located inside the shell is movably connected with a first moving block, the side of the first moving block is located in a first slide groove and moves along the first slide groove, and the axis of the adjusting screw is parallel to the movement track of the first moving block;
[0007] A second slide groove is also provided in the shell, and a second moving block is slidably connected to the second slide groove, and the second moving block is vertically distributed with respect to the motion trajectory of the first moving block; a first inclined surface is provided on the side surface of the first moving block, and a second inclined surface is provided on the side surface of the second moving block, and the first inclined surface and the second inclined surface are in contact; a tuning rod is provided on the end surface of the second moving block, and the axis of the tuning rod is parallel to the motion trajectory of the second moving block, and the tuning rod passes through the shell;
[0008] When the adjusting screw is rotated, the first moving block moves along the first sliding groove, and the first moving block moves through the inclined surface to squeeze the second moving block so that the second moving block moves along the second sliding groove, so that the tuning rod extends out to support the strings to adjust the string tension.
[0009] According to the above technology, this device is used on the neck of the erhu, and the tuning rod is extended to support the strings. When in use, the device is used to perform secondary fine-tuning on the strings that are already in a tensioned state to deal with the situation where the tension of the strings decreases during use.
[0010] In a possible design, a spring is provided on the tuning rod, one end of the spring abuts against the end surface of the second moving block, and the other end of the spring abuts against the inner side of the housing. The spring is provided so that the adjustment device has a certain self-adaptive adjustment function.
[0011] In a possible design, the fixing mechanism includes symmetrically distributed arc-shaped clamping plates. By providing a clamping installation structure, the installation of the tuning device is facilitated.
[0012] In a possible design, both ends of the two arc-shaped clamping plates are provided with extension plates, the extension plates are provided with holes, and locking bolts are provided in the holes. The locking bolts are provided to facilitate fixing.
[0013] In a possible design, a knob is provided at one end of the adjusting screw located outside the housing.
[0014] The second aspect of the utility model provides an erhu with fine-tunable strings, including a neck, a peg arranged on the upper part of the neck, and a bridge arranged on the neck; the neck is also provided with an erhu fine-tuning string device as described in the first aspect and any one of the first aspects.
[0015] In a possible design, a connecting screw is provided in the middle of the axle, and a threaded sleeve is fixedly provided in the hole on the piano bar for installing the axle, and is connected to the piano bar through a thread. The threaded connection makes adjustment more convenient.
[0016] In a possible design, a washer is provided on the connecting screw rod to prevent the screw from retreating.
[0017] In a possible design, the bridge is movably arranged on the neck of the instrument. The movable bridge is convenient for adjusting the erhu.
[0018] Beneficial effects: The device is used on the neck of the erhu, and the tuning rod is extended to support the strings. When in use, the device is used to perform secondary fine-tuning on the strings that are already in a tensioned state to cope with the situation where the tension of the strings decreases during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A schematic diagram of the internal structure of the erhu fine-tuning string device provided in the first aspect of the embodiment;
[0020] Figure 2 A schematic diagram of the external structure of the erhu fine-tuning string device provided in the first aspect of the embodiment;
[0021] Figure 3 A schematic structural diagram of the neck portion of an erhu with fine-tunable strings provided in the second aspect of the embodiment;
[0022] Figure 4 A schematic diagram of the internal structure of the peg portion of an erhu with fine-tunable strings provided in accordance with the second aspect of the embodiment.
[0023] The accompanying drawings in the figure are marked as follows:
[0024] 1-device body, 2-arc clamping plate, 3-housing, 4-adjusting screw, 5-screw hole, 6-first moving block, 7-first slide groove, 8-second slide groove, 9-second moving block, 10-spring, 11-tuning rod, 12-knob, 13-extension plate, 14-locking bolt, 15-piano axis, 16-connecting screw, 17-washer, 18-threaded sleeve, 19-jack, 20-locking nut, 21-piano bar, 22-string groove. DETAILED DESCRIPTION
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.
[0026] Example:
[0027] like Figure 1 As shown, the first aspect of the present embodiment provides an erhu fine tuning device, comprising a device body 1 and a fixing mechanism connected to the device body 1 and used for connecting to an erhu bar 21, the device body 1 comprising a shell 3, a screw hole 5 is provided on the side of the shell 3, an adjusting screw 4 is threadedly connected to the inner thread of the screw hole 5, the adjusting screw 4 is arranged from the outside of the shell 3 to the inside of the shell 3, one end of the adjusting screw 4 located inside the shell 3 is movably connected to a first moving block 6, the side of the first moving block 6 is located in a first slide groove 7 and moves along the first slide groove 7, and the axis of the adjusting screw 4 is parallel to the movement trajectory of the first moving block 6;
[0028] The housing 3 is also provided with a second slide groove 8, and the second slide groove 8 is slidably connected with a second moving block 9, and the second moving block 9 is vertically distributed with the motion track of the first moving block 6; the first moving block 6 is provided with a first inclined surface on the side, and the second moving block 9 is provided with a second inclined surface on the side, and the first inclined surface and the second inclined surface are in contact; the end surface of the second moving block 9 is provided with a tuning rod 11, and the axis of the tuning rod 11 is parallel to the motion track of the second moving block 9, and the tuning rod 11 passes through the housing 3. The inclined surface is used to change the direction of force, decompose or two-directional force, block one component force, and guide the force in another direction.
[0029] When the adjusting screw 4 is rotated, the first moving block 6 moves along the first sliding groove 7. The first moving block 6 moves and squeezes the second moving block 9 through the inclined surface, so that the second moving block 9 moves along the second sliding groove 8, so that the tuning rod 11 extends out to support the strings to adjust the string tension.
[0030] When implementing it, Figure 1 , Figure 4 As shown, the adjusting screw 4 is located at one side of the bottom of the erhu fine tuning device; of course, it can also be set at the upper side, front side and rear side. Specifically, the end of the tuning rod 11 is longitudinally provided with a string groove 22, and the string is located in the string groove 22 to limit the string.
[0031] In a possible implementation, a spring 10 is provided on the tuning rod 11, one end of the spring 10 abuts against the end surface of the second moving block 9, and the other end of the spring 10 abuts against the inner side of the housing 3. Specifically, the spring is in a stretched state; in the stretched state, it can adapt to a larger adaptive tightness adjustment range;
[0032] In a possible implementation, Figure 2 As shown, the fixing mechanism includes symmetrically distributed arc-shaped clamping plates 2.
[0033] In a possible implementation, both ends of the two arc-shaped clamping plates 2 are provided with extension plates 13, and holes are provided on the extension plates 13, and locking bolts 14 are provided in the holes. Figure 2 Described, described locking bolt is butterfly bolt.
[0034] In a possible implementation manner, a knob 12 is provided at one end of the adjusting screw 4 located outside the housing 3 .
[0035] The second aspect of the utility model provides an erhu with fine-tuning strings, including a neck 21, a peg 15 arranged on the upper part of the neck 21, and a bridge 19 arranged on the neck 21; the neck 21 is also provided with an erhu fine-tuning string device as described in the first aspect of this embodiment and any possible implementation manner of the first aspect.
[0036] In a possible implementation, a connecting screw 16 is disposed in the middle of the axle 15 , and a threaded sleeve 18 is fixedly disposed in the hole on the bar 21 for mounting the axle 15 , and is connected to the bar 21 via threads.
[0037] In a possible implementation, a washer 17 and a locking nut 20 are provided on the connecting screw 16, the washer 17 and the locking nut 20 are arranged adjacent to each other, the connecting screw 16 passes through the piano bar 21, and washers 17 and locking nuts 20 are provided on the connecting screws 16 on both sides of the piano bar 21.
[0038] In a possible implementation, the jack 19 is movably arranged on the piano bar 21. In a specific implementation, the jack is a detachable movable jack. There are many types of detachable movable jacks on the market, which will not be described here.
[0039] In summary, the erhu fine-tuning string device and the erhu with fine-tunable strings provided in this embodiment can be detachably mounted on the neck of the erhu for use. When in use, the device can be used to perform secondary fine-tuning on the strings that are already in a tensioned state to cope with the situation where the tension of the strings decreases during use.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A device for fine tuning strings of an erhu, characterized in that: The invention comprises a device body (1) and a fixing mechanism connected to the device body (1) and used for connecting to a neck (21) of an erhu, wherein the device body (1) comprises a shell (3), a screw hole (5) is provided on a side of the shell (3), an adjusting screw (4) is internally threadedly connected to the screw hole (5), the adjusting screw (4) is arranged to pass from the outside of the shell (3) to the inside of the shell (3), one end of the adjusting screw (4) located inside the shell (3) is movably connected to a first moving block (6), a side of the first moving block (6) is located in a first slide groove (7) and moves along the first slide groove (7), and the axis of the adjusting screw (4) is parallel to the movement trajectory of the first moving block (6); A second slide groove (8) is further provided in the housing (3), the second slide groove (8) being slidably connected to a second moving block (9), the second moving block (9) being vertically distributed with respect to the movement trajectory of the first moving block (6); a first inclined surface is provided on the side surface of the first moving block (6), a second inclined surface is provided on the side surface of the second moving block (9), the first inclined surface and the second inclined surface are in contact; a tuning rod (11) is provided on the end surface of the second moving block (9), the axis of the tuning rod (11) is parallel to the movement trajectory of the second moving block (9), and the tuning rod (11) passes through the housing (3); When the adjusting screw (4) is rotated, the first moving block (6) moves along the first sliding groove (7), and the first moving block (6) moves through the inclined surface to press the second moving block (9), so that the second moving block (9) moves along the second sliding groove (8), so that the tuning rod (11) extends out to support the strings, so as to adjust the tension of the strings.
2. The erhu fine tuning device according to claim 1, characterized in that: The tuning rod (11) is provided with a spring (10), one end of the spring (10) abuts against the end surface of the second moving block (9), and the other end of the spring (10) abuts against the inner side of the outer shell (3).
3. The erhu fine tuning device according to claim 1, characterized in that: The fixing mechanism comprises symmetrically distributed arc-shaped clamping plates (2).
4. The erhu fine tuning device according to claim 3, characterized in that: An extension plate (13) is provided at the ends of the two arc-shaped clamping plates (2), and a hole is provided on the extension plate (13), and a locking bolt (14) is provided in the hole.
5. The erhu fine tuning device according to claim 1, characterized in that: A knob (12) is provided at one end of the adjusting screw (4) located outside the housing (3).
6. A fine-tunable erhu, comprising a neck (21), a peg (15) disposed on the upper portion of the neck (21), and a bridge (19) disposed on the neck (21); characterized in that: The neck (21) is also provided with an erhu fine-tuning device as claimed in any one of claims 1 to 5.
7. The erhu with fine tuning according to claim 6, characterized in that: A connecting screw (16) is arranged in the middle of the piano axis (15), and a threaded sleeve (18) is fixedly arranged in a hole on the piano rod (21) for mounting the piano axis (15), and is connected to the piano rod (21) by a thread.
8. The erhu with fine-tunable strings according to claim 7, characterized in that: A washer (17) is provided on the connecting screw (16).
9. The erhu with fine-tunable strings according to claim 6, characterized in that: The jack (19) is movably arranged on the piano bar (21).