Guitar tuning knob structure with self-locking function

Abstract

The invention relates to the technical field of guitar tuning knobs, in particular to a guitar tuning knob structure with a self-locking function, which comprises a box body, two first fixing plates are fixedly connected to the inner bottom surface of the box body, a worm is rotatably connected between the two first fixing plates, a worm gear meshed with the worm is rotatably connected to the inner bottom surface of the box body, and the worm gear is rotatably connected to the inner bottom surface of the box body. The worm wheel penetrates through one end of the rotating shaft extending to the outside of the box body and is coaxially and fixedly connected with a tuning reel, and a tuning driving mechanism is installed in the box body and comprises a coarse tuning gear set, a fine tuning gear set and a driving shaft. According to the guitar tuning knob structure with the self-locking function, when the tension of strings is too large, the tension of the strings can overcome the elastic force of a spring, so that a vertical rod moves upwards and drives a sliding sleeve to be away from a disc, namely, an upper clamping plate of the sliding sleeve is separated from an upper clamping plate of a circular groove, namely, a driving shaft rotates and does not drive a mounting shaft to rotate, and thus the tension of the strings is prevented from being too large.

Description

Technical Field

[0001] This invention relates to the field of guitar tuning knob technology, specifically a guitar tuning knob structure with a self-locking function. Background Technology

[0002] The guitar, as a popular stringed instrument, relies heavily on stable intonation for optimal performance. This intonation adjustment depends entirely on the tuning pegs mounted on the headstock. By rotating these pegs, the player changes the effective length of the string wound around the peg shaft, thus altering the string tension and achieving tuning. This seemingly simple process is actually one of the most basic and frequent operations in instrument maintenance.

[0003] Currently, most guitar tuning pegs on the market use a worm gear mechanism to achieve precise and effortless transmission of power to the tuning pins when the peg is turned. However, this transmission is unidirectional and unprotected. Regardless of the string tension, the peg can always be driven by the torque applied by the user. This leads to a very common and troublesome problem during actual tuning, especially when the string tension is close to or has reached the standard pitch—"overtuning." For inexperienced players or in noisy live performances where pitch cannot be clearly discerned, the operator can easily continue to turn the peg in the tightening direction due to unclear feel or misjudgment. At this point, the string tension increases sharply, far exceeding its safe load.

[0004] To address the aforementioned issues, we have made improvements by proposing a guitar tuning knob structure with a self-locking function. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a guitar tuning knob structure with a self-locking function, including a housing. Two fixing plates are fixedly connected to the inner bottom surface of the housing. A worm gear is rotatably connected between the two fixing plates. A worm wheel that meshes with the worm gear is also rotatably connected to the inner bottom surface of the housing. A tuning reel is coaxially fixedly connected to one end of a rotating shaft that extends through the worm wheel to the outside of the housing. The housing is equipped with a tuning drive mechanism, which includes a coarse adjustment gear set, a fine adjustment gear set, and a drive shaft. The drive shaft is rotatably connected to the inner wall of one side of the housing, and a mounting shaft is slidably connected to the outer wall of the drive shaft. The coarse adjustment gear set includes a coarse adjustment drive gear and a coarse adjustment driven gear that mesh with each other. The fine adjustment gear set includes a fine adjustment drive gear and a fine adjustment driven gear that mesh with each other. The coarse adjustment driven gear and the fine adjustment driven gear are coaxially fixedly connected to the outer wall of the worm gear that extends through to the outside of the fixed plate. The coarse adjustment drive gear and the fine adjustment drive gear are slidably sleeved on the outer wall of the mounting shaft. A tension feedback mechanism is also installed on the outer wall of the mounting shaft. The tension feedback mechanism includes a sliding sleeve. A connecting rod is hinged to the upper part of the outer wall of the sliding sleeve. A vertical rod that is slidably connected to the housing is hinged to the other end of the connecting rod. A concave seat is fixedly connected to the top of the vertical rod. A rotating rod is rotatably connected between the inner walls of opposite sides of the concave seat, and the strings are wound around the tuning reel via the rotating rod.

[0006] As a preferred embodiment of the present invention, the inner bottom surface of the box is fixedly connected to a second fixing plate and a third fixing plate, the coarse adjustment drive gear is rotatably connected to the second fixing plate, and the fine adjustment drive gear is rotatably connected to the third fixing plate.

[0007] As a preferred embodiment of the present invention, a disc is coaxially rotatably connected to the outer wall of the drive shaft, a sleeve is coaxially fixedly connected to the side of the disc, the end of the mounting shaft is slidably connected to the inside of the sleeve, a limiting groove is formed on the inner wall of the sleeve, and a limiting slide bar that is slidably connected to the limiting groove is fixedly connected to the outer wall of the end of the mounting shaft.

[0008] As a preferred embodiment of the present invention, a circular groove is provided on the side of the disc near the sliding sleeve, and a retaining plate is fixedly connected to the inner wall of the circular groove, and a retaining plate is also fixedly connected to the outer wall of the sliding sleeve.

[0009] As a preferred embodiment of the present invention, a threaded cylinder with threads on its outer wall is fixedly connected to the outer wall of the box body, a nut is threadedly connected to the outer wall of the threaded cylinder, one end of the mounting shaft extending through to the outside of the box body is rotatably connected to the nut, and a knob is fixedly connected to one end of the drive shaft extending to the outside of the mounting shaft.

[0010] As a preferred embodiment of the present invention, a main friction disk is coaxially fixedly connected to the outer wall of the mounting shaft located between the coarse adjustment drive gear and the fine adjustment drive gear, and a secondary friction disk is coaxially fixedly connected to the sides of the coarse adjustment drive gear and the fine adjustment drive gear near the main friction disk.

[0011] As a preferred embodiment of the present invention, a plurality of circumferentially arrayed locking strips are fixedly connected to both sides of the main friction disk, and a plurality of circumferentially arrayed locking strips are also fixedly connected to the side of the secondary friction disk near the main friction disk.

[0012] As a preferred embodiment of the present invention, a spring is sleeved on the outer wall of the vertical rod located between the concave seat and the box body.

[0013] As a preferred embodiment of the present invention, a limiting strip is fixedly connected to the outer wall of the drive shaft and slidably connected to the sliding sleeve. The limiting strip is used to prevent relative rotation between the sliding sleeve and the drive shaft.

[0014] The beneficial effects of this invention are: when the string tension is too high, the string tension will overcome the spring force, causing the vertical rod to move upward. The vertical rod will drive the sliding sleeve away from the disc, that is, the upper plate of the sliding sleeve will disengage from the upper plate of the groove. In other words, the rotation of the drive shaft will not drive the installation shaft to rotate, thereby preventing the string tension from being too high. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; Figure 2 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; Figure 3 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; Figure 4 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; Figure 5 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; Figure 6 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; Figure 7 This is a schematic diagram of a guitar tuning knob structure with a self-locking function according to the present invention; In the diagram: 1. Box body; 2. Fixing plate one; 3. Worm gear; 4. Worm wheel; 5. Tuning reel; 6. Coarse adjustment drive gear; 7. Coarse adjustment driven gear; 8. Fine adjustment drive gear; 9. Fine adjustment driven gear; 10. Drive shaft; 11. Mounting shaft; 12. Disc; 13. Sleeve; 14. Limiting groove; 15. Limiting slide bar; 16. Main friction disc; 17. Secondary friction disc; 18. Fixing plate two; 19. Fixing plate three; 20. Sliding sleeve; 21. Threaded cylinder; 22. Nut; 23. Connecting rod; 24. Vertical rod; 25. Concave seat. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Example: Figures 1-7As shown, a guitar tuning knob structure with a self-locking function includes a housing 1. Two fixing plates 2 are fixedly connected to the inner bottom surface of the housing 1. A worm gear 3 is rotatably connected between the two fixing plates 2. A worm wheel 4 that meshes with the worm gear 3 is also rotatably connected to the inner bottom surface of the housing 1. A tuning reel 5 is coaxially fixedly connected to one end of the worm wheel 4 that extends through to the outside of the housing 1. The housing 1 houses a tuning drive mechanism, which includes a coarse adjustment gear set, a fine adjustment gear set, and a drive shaft 10. The drive shaft 10 is rotatably connected to the inner wall of one side of the housing 1, and a mounting shaft 11 is slidably connected to the outer wall of the drive shaft 10. The coarse adjustment gear set includes a coarse adjustment drive gear 6 and a coarse adjustment driven gear 7 that mesh with each other. The fine adjustment gear set includes a fine adjustment drive gear 8 and a fine adjustment driven gear 9 that mesh with each other. The coarse adjustment driven gear 7 and the fine adjustment driven gear 9 are coaxially fixedly connected to the outer wall of the worm gear 3, which extends through to the outside of the fixed plate 2. The coarse adjustment drive gear 6 and the fine adjustment drive gear 8 are slidably sleeved on the outer wall of the mounting shaft 11. It should be noted that the number of teeth of the coarse adjustment drive gear 6 is greater than the number of teeth of the coarse adjustment driven gear 7, and the number of teeth of the fine adjustment drive gear 8 is less than the number of teeth of the fine adjustment driven gear 9.

[0018] The inner bottom surface of the box 1 is fixedly connected to a second fixed plate 18 and a third fixed plate 19. The coarse adjustment drive gear 6 is rotatably connected to the second fixed plate 18, and the fine adjustment drive gear 8 is rotatably connected to the third fixed plate 19.

[0019] A threaded cylinder 21 with threads on its outer wall is fixedly connected to the outer wall of the box body 1. A nut 22 is threadedly connected to the outer wall of the threaded cylinder 21. One end of the mounting shaft 11 extends through the box body 1 and is rotatably connected to the nut 22. A knob is fixedly connected to one end of the drive shaft 10 extending to the outside of the mounting shaft 11.

[0020] A main friction disk 16 is coaxially fixedly connected to the outer wall of the mounting shaft 11 located between the coarse adjustment drive gear 6 and the fine adjustment drive gear 8. A secondary friction disk 17 is coaxially fixedly connected to the sides of both the coarse adjustment drive gear 6 and the fine adjustment drive gear 8 near the main friction disk 16.

[0021] Several circumferentially arranged locking strips are fixedly connected to both sides of the main friction disk 16. Several circumferentially arranged locking strips are also fixedly connected to the side of the auxiliary friction disk 17 near the main friction disk 16. When the mounting shaft 11 rotates, if the main friction disk 16 and the auxiliary friction disk 17 come into contact, they will rotate synchronously through the locking strips.

[0022] like Figure 4 and Figure 5As shown, by first rotating the nut 22, the mounting shaft 11 slides on the drive shaft 10, causing the main friction disc 16 on the mounting shaft 11 to contact the auxiliary friction disc 17 on the coarse adjustment drive gear 6 or the fine adjustment drive gear 8. When the knob is rotated, the retaining strip on the main friction disc 16 engages with the retaining strip on the auxiliary friction disc 17, causing the mounting shaft 11 to rotate one of the coarse adjustment drive gear 6 and the fine adjustment drive gear 8. The coarse adjustment drive gear 6 then drives the coarse adjustment driven gear 7, or the fine adjustment drive gear 8 drives the fine adjustment driven gear 9, to rotate. Finally, the worm gear 3 rotates, which in turn drives the worm wheel 4, which in turn drives the tuning reel 5 to rotate and wind the strings.

[0023] A tension feedback mechanism is also installed on the outer wall of the mounting shaft 11. The tension feedback mechanism includes a sliding sleeve 20. A connecting rod 23 is hinged to the upper part of the outer wall of the sliding sleeve 20. A vertical rod 24 that is slidably connected to the housing 1 is hinged to the other end of the connecting rod 23. A concave seat 25 is fixedly connected to the top of the vertical rod 24. A rotating rod is rotatably connected between the inner walls of opposite sides of the concave seat 25, and the strings are wound around the tuning reel 5 through the rotating rod.

[0024] A disc 12 is coaxially rotatably connected to the outer wall of the drive shaft 10. A sleeve 13 is coaxially fixedly connected to the side of the disc 12. The end of the mounting shaft 11 is slidably connected inside the sleeve 13. A limiting groove 14 is formed on the inner wall of the sleeve 13. A limiting slide bar 15, which is slidably connected to the limiting groove 14, is fixedly connected to the outer wall of the end of the mounting shaft 11. Figure 7 As shown, the function of the limiting groove 14 and the limiting slide bar 15 is to prevent the mounting shaft 11 and the sleeve 13 from rotating relative to each other.

[0025] A circular groove is provided on the side of the disc 12 near the sliding sleeve 20. A retaining plate is fixedly connected to the inner wall of the circular groove, and a retaining plate is also fixedly connected to the outer wall of the sliding sleeve 20.

[0026] A spring is fitted on the outer wall of the vertical rod 24 located between the concave seat 25 and the box body 1.

[0027] A limiting strip is fixedly connected to the outer wall of the drive shaft 10 and slidably connected to the sliding sleeve 20. The limiting strip is used to prevent relative rotation between the sliding sleeve 20 and the drive shaft 10.

[0028] When the string tension is too high, the string tension will overcome the spring force, causing the vertical rod 24 to move upward. The vertical rod 24 drives the sliding sleeve 20 away from the disc 12, that is, the upper plate of the sliding sleeve 20 disengages from the upper plate of the groove. In other words, the rotation of the drive shaft 10 will not drive the installation shaft 11 to rotate, thereby preventing the string tension from being too high.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A guitar tuning knob structure with a self-locking function, comprising a housing (1), characterized in that, The inner bottom surface of the box body (1) is fixedly connected to two fixing plates (2), and a worm gear (3) is rotatably connected between the two fixing plates (2). The inner bottom surface of the box body (1) is also rotatably connected to a worm wheel (4) that meshes with the worm gear (3). The worm wheel (4) extends through to one end of the rotating shaft outside the box body (1) and is coaxially fixedly connected to a tuning reel (5). The box (1) is equipped with a tuning drive mechanism. The tuning drive mechanism includes a coarse adjustment gear set, a fine adjustment gear set and a drive shaft (10). The drive shaft (10) is rotatably connected to the inner wall of one side of the box (1). The outer wall of the drive shaft (10) is slidably connected to a mounting shaft (11). The coarse adjustment gear set includes a coarse adjustment drive gear (6) and a coarse adjustment driven gear (7) that mesh with each other. The fine adjustment gear set includes a fine adjustment drive gear (8) and a fine adjustment driven gear (9) that mesh with each other. The coarse adjustment driven gear (7) and the fine adjustment driven gear (9) are coaxially fixedly connected to the outer wall of the worm gear (3) that extends through to the outside of the fixing plate (2). The coarse adjustment drive gear (6) and the fine adjustment drive gear (8) are slidably sleeved on the outer wall of the mounting shaft (11). A tension feedback mechanism is also installed on the outer wall of the mounting shaft (11). The tension feedback mechanism includes a sliding sleeve (20). A connecting rod (23) is hinged to the upper part of the outer wall of the sliding sleeve (20). A vertical rod (24) that is slidably connected to the box body (1) is hinged to the other end of the connecting rod (23). A concave seat (25) is fixedly connected to the top of the vertical rod (24). A rotating rod is rotatably connected between the inner walls of the opposite sides of the concave seat (25), and the strings are wound around the tuning reel (5) through the rotating rod.

2. The guitar tuning knob structure with self-locking function according to claim 1, characterized in that, The inner bottom surface of the box (1) is fixedly connected to a second fixed plate (18) and a third fixed plate (19). The coarse adjustment drive gear (6) is rotatably connected to the second fixed plate (18), and the fine adjustment drive gear (8) is rotatably connected to the third fixed plate (19).

3. The guitar tuning knob structure with self-locking function according to claim 1, characterized in that, A disc (12) is coaxially rotatably connected to the outer wall of the drive shaft (10). A sleeve (13) is coaxially fixedly connected to the side of the disc (12). The end of the mounting shaft (11) is slidably connected inside the sleeve (13). A limiting groove (14) is provided on the inner wall of the sleeve (13). A limiting slide bar (15) that is slidably connected to the limiting groove (14) is fixedly connected to the outer wall of the end of the mounting shaft (11).

4. The guitar tuning knob structure with self-locking function according to claim 3, characterized in that, The disc (12) has a circular groove on the side near the sliding sleeve (20), and a retaining plate is fixedly connected to the inner wall of the circular groove. A retaining plate is also fixedly connected to the outer wall of the sliding sleeve (20).

5. The guitar tuning knob structure with self-locking function according to claim 1, characterized in that, A threaded cylinder (21) with threads on its outer wall is fixedly connected to the outer wall of the box (1). A nut (22) is threadedly connected to the outer wall of the threaded cylinder (21). One end of the mounting shaft (11) extends through to the outside of the box (1) and is rotatably connected to the nut (22). A knob is fixedly connected to one end of the drive shaft (10) extending to the outside of the mounting shaft (11).

6. The guitar tuning knob structure with self-locking function according to claim 1, characterized in that, A main friction disk (16) is coaxially fixedly connected to the outer wall of the mounting shaft (11) located between the coarse adjustment drive gear (6) and the fine adjustment drive gear (8). A secondary friction disk (17) is coaxially fixedly connected to the sides of the coarse adjustment drive gear (6) and the fine adjustment drive gear (8) near the main friction disk (16).

7. The guitar tuning knob structure with self-locking function according to claim 6, characterized in that, The main friction disk (16) has several circumferentially arranged clips fixedly connected to both sides, and the secondary friction disk (17) has several circumferentially arranged clips fixedly connected to the side of the secondary friction disk (16) near the main friction disk (16).

8. The guitar tuning knob structure with self-locking function according to claim 1, characterized in that, A spring is fitted on the outer wall of the vertical rod (24) located between the concave seat (25) and the box body (1).

9. The guitar tuning knob structure with self-locking function according to claim 1, characterized in that, A limiting strip is fixedly connected to the outer wall of the drive shaft (10) and slidably connected to the sliding sleeve (20). The limiting strip is used to prevent relative rotation between the sliding sleeve (20) and the drive shaft (10).

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