String tension adjusting and tuning device

Abstract

The invention relates to a string tension adjusting and tuning device, which solves the problem of musical instruments, such as Chinese zither, dulcimer, piano and the like, of which the pitch needs to be adjusted through string tension change through transmission of a worm gear, a worm and a gear set. An existing string nail tuning mode has the defects that the required tuning force is large, the adjustment action is stuck, a string is easy to break, the requirement for the material of a string nail fixing plate is high, and the repair cost after threads are damaged is high. According to the invention, by using the self-locking property of the worm gear and the large torque transmission characteristic of the gear set, the pitch can be adjusted by stretching the strings by applying a small torque on the adjusting knob. The gear transmission enables the adjustment process to act continuously, and the string is smooth in tensile force and not easy to break. The string winding mechanism utilizes a mechanism of reducing a middle gap through hole dislocation to firmly clamp strings on the string winding mechanism, so that the pitch is stable and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to string tension and pitch adjustment of stringed musical instruments, and is suitable for the need of adjusting string tension and pitch of Guzheng, Guqin and piano. It is also suitable for some occasions where the tension of steel wire and rope needs to be adjusted. BACKGROUND

[0002] Guzheng, Guqin and piano, etc. are a kind of musical instruments whose pitch is adjusted by changing the tension of the strings. Usually, the strings are fixed on wooden materials by string pegs (screw connection), and the friction of the screw is relied on to achieve the purpose of string adjustment.

[0003] Because the strings are in a state of tension for a long time, they are prone to fatigue deformation in length, causing changes in pitch. It is usually necessary to frequently check and adjust the pitch of each string.

[0004] For Guzheng and Guqin, most beginners are children, and children's wrist strength is usually small, so they cannot adjust the pitch of the strings independently. Without the help of adults, the player will use the instrument with lost pitch to practice, which will affect the playing effect.

[0005] Long-term practice with an instrument that has lost its pitch will affect the player's judgment and mastery of the pitch. SUMMARY

[0006] The present application provides a convenient and labor-saving string tension and tuning device that can replace the string pegs of existing Guzheng, Guqin and piano, and achieve stable pitch after adjusting each string.

[0007] Traditional string peg tuning is time-consuming and labor-intensive, and the precision is difficult to control, and it is easy to slip. The present application uses the self-locking characteristics of the turbine worm to achieve labor saving and prevent pitch from running. A larger gear transmission ratio is used to achieve fine tuning of the pitch and high precision.

[0008] It is suitable for beginners, prolongs the service life, and reduces the difficulty of tuning.

[0009] The present application will be further described in combination with the drawings.

[0010] IN THE DRAWINGS Figure 1 It is an independent module. The strings are sequentially threaded through the string threading hole 1, the string winding pipe 5 and the mandrel 4. By rotating the adjustment knob 3, the transmission mechanism drives the mandrel 4 to rotate, thereby winding the strings on the string winding pipe 5. The more the number of windings, the greater the tension of the strings.

[0011] IN THE DRAWINGS Figure 2The module internal transmission structure is that the adjusting knob 3 drives the worm 9 to rotate, the worm 9 cooperates with the turbine 10 to form a reverse self-locking mechanism, the turbine 10 drives the first gear 11 to move, the first gear 11 transmits power to the second gear 12, the second gear 12 transmits power to the third gear 13, and the rotation of the third gear drives the rotation of the mandrel 4.

[0012] In the description of the drawings Figure 3 The string winding mechanism is shown, the string winding tube 5 can rotate freely, under the tension of the string, the string winding hole of the string winding tube 5 and the string winding hole on the mandrel form a certain misalignment, so that the string is firmly clamped on the string winding tube, the greater the tension of the string, the greater the misalignment angle of the hole, and the more firmly the string is fixed.

[0013] In the description of the drawings Figure 4 The described is an example of a plurality of module combinations, two adjacent modules are left-right symmetrical structures, and the operation space can be increased through left-right symmetrical layout, so as to facilitate the implementation of string winding work.

Claims

1. A device for adjusting string tension and tuning, characterized in that... Each string corresponds to an independent tuning module, which consists of a worm gear, a gear set, and a string winding mechanism. The independent module is fixed on a base plate, and rotating the independent module allows for independent adjustment of all strings.

2. The tuning device according to claim 1, characterized in that, Each string corresponds to an independent module, and adjustments between the strings do not interfere with each other.

3. The tuning device according to claim 1, characterized in that, The string-winding mechanism can automatically clamp the strings.

4. The tuning device according to claim 1, characterized in that, The tuning module consists of a worm gear, a gear set, and a string winding mechanism. It is very labor-saving during tensioning and tuning, requiring only a small force at the end to achieve tensioning and tuning.

5. The tuning device according to claim 1, characterized in that, A multi-stage gear combination achieves accurate pitch adjustment through a large proportional transmission ratio.

6. The tuning device according to claim 1, characterized in that, Relying on the self-locking function of the worm gear, the tension of the string can be stably locked to prevent rebound changes.

7. The tuning device according to claim 1, characterized in that, The two adjacent modules are symmetrically arranged, providing a large operating space.

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