Guqin cavity with bone beam and triangular stereoscopic rhombus carving

By incorporating sound-breaking and adjusting components within the guzheng's cavity, utilizing diamond-shaped carved grooves to reflect sound waves, using bone beams to block sound waves, and adjusting screws to adjust the height of the bone beams, the problems of long sustain and unclear timbre caused by the rapid propagation of sound waves within the guzheng's cavity are solved, thereby improving the clarity and stability of the timbre.

CN224519488UActive Publication Date: 2026-07-17YANGZHOU TIANDAO NAT MUSICAL INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGZHOU TIANDAO NAT MUSICAL INSTR CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing guzheng cavity lacks a specially designed internal structure, which causes sound wave energy to propagate, reflect, and superimpose rapidly, resulting in long reverberation time, uneven dissipation in the mid and low ranges, and an unclean and clear tone.

Method used

The guzheng's cavity is equipped with sound-breaking and adjustment components, including a bone beam, a diamond-shaped carved groove, a positioning component, a limiting component, and an adjustment screw. The diamond-shaped carved groove reflects sound waves, the bone beam blocks sound waves, and the adjustment screw adjusts the height of the bone beam, thereby changing the vibration stiffness of the soundboard.

Benefits of technology

It reduces standing wave intensity, improves tone clarity, enhances the stability of the guzheng, achieves precise control over the resonance intensity in the mid-to-low range, and improves sound quality.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224519488U_ABST
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Abstract

The utility model relates to the guzheng cavity field especially with the bone beam and the triangular solid rhombic sculpture's guzheng cavity, including the broken sound part, including the guzheng cavity, the inside of guzheng cavity is inserted with the front beam, the inside of guzheng cavity is inserted with the rear beam, the inside swing joint of guzheng cavity has the middle beam, the bottom inner wall of guzheng cavity is opened with the rhombic sculpture groove, the inside of middle beam is provided with the positioning assembly for the sound wave cut off, the inside of middle beam is provided with the limiting component. Under the cooperation of rhombic sculpture groove, it is convenient for the reflection of interference sound wave on the cavity wall, and the concentrated sound wave energy is scattered into multiple direction propagation small wave, reduces the intensity that the standing wave forms, under the cooperation of bone beam, it is convenient for the sound wave conduction to cut off and weaken, lets the tone be more clean, and bone beam as additional support point can share the pressure that the scale exerts on the panel, improves the stability and service life of guzheng.
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Claims

1. A guzheng (Chinese zither) cavity with a bone beam and triangular three-dimensional rhomboid carving, characterized in that: include, The sound-cutting component includes a guzheng cavity (10), a front beam (11) inserted inside the guzheng cavity (10), a rear beam (12) inserted inside the guzheng cavity (10), a middle beam (13) movably connected inside the guzheng cavity (10), a diamond-shaped carved groove (14) on the bottom inner wall of the guzheng cavity (10), a positioning component (15) for cutting off sound waves inside the middle beam (13), and a limiting component (16) inside the middle beam (13). The adjusting component includes an adjusting screw (20) which is rotatably connected inside the middle beam (13), and a moving component (21) is provided inside the middle beam (13).

2. The Guzheng cavity with bone beam and triangular solid rhombus engraving according to claim 1, characterized in that: The positioning component (15) includes a rotating column (151), which is fixedly connected to the outside of the middle beam (13). A positioning frame (152) is fixedly connected to the bottom of the middle beam (13). A bone beam (153) is slidably connected to the inner wall of the positioning frame (152). The bone beam (153) is slidably connected to the middle beam (13). A damping silicone pad (154) is provided at the bottom of the bone beam (153). A sealing block (155) is slidably connected to the inner wall of the middle beam (13).

3. The Guzheng cavity with bone beam and triangular solid rhombus engraving according to claim 2, characterized in that: The guzheng cavity (10) has a sliding groove at the position corresponding to the rotating column (151), and the rotating column (151) is slidably connected in the sliding groove.

4. The Guzheng cavity with bone beam and triangular solid rhombus engraving according to claim 2, characterized in that: The limiting component (16) includes a plug (161) which is slidably connected inside the middle beam (13). One end of the plug (161) is fixedly connected to a bending plate (162). The bending plate (162) is slidably connected to the middle beam (13). A spring (163) is fixedly connected between the outer side of the bending plate (162) and the middle beam (13). An extrusion block (164) is slidably connected to the outer side of the middle beam (13). The extrusion block (164) is in contact with the bending plate (162). An L-shaped plate (165) is fixedly connected to the top of the extrusion block (164).

5. The Guzheng cavity with bone beam and triangular solid rhombus engraving according to claim 4, characterized in that: The guzheng cavity (10) has a groove at the position corresponding to the insertion post (161), and the insertion post (161) is inserted into the groove.

6. The Guzheng cavity with bone beam and triangular solid rhombus engraving according to claim 2, characterized in that: The movable component (21) includes a movable frame (211), which is threaded to the outside of the adjusting screw (20) and slidably connected to the inner wall of the middle beam (13). One end of the adjusting screw (20) is fixedly connected to a rotating block (212), which is rotatably connected to the middle beam (13). The rotating block (212) has a cross groove inside, and the inner wall of the adjusting screw (20) is... A guide rod (213) is fixedly connected to the wall. The movable frame (211) is slidably connected to the outside of the guide rod (213). A push block (214) is fixedly connected to the side of the movable frame (211) near the bone beam (153). A triangular block (215) is fixedly connected to the inner wall of the bone beam (153). The push block (214) contacts the triangular block (215). A T-shaped block (216) is fixedly connected to the outside of the movable frame (211).

7. The Guzheng cavity with bone beam and triangular solid rhombus engraving according to claim 6, characterized in that: The sealing block (155) has a groove at the position corresponding to the T-shaped block (216), and the T-shaped block (216) is slidably connected in the groove.