Special high-precision clamping force adjusting structure for capo

Abstract

The utility model discloses a special high-precision clamping force adjusting structure for a capo, which comprises a front clamping arm, a rear clamping arm, a pressing arm, a pull rod and a spring, the pressing arm is used for pressing the front clamping arm and the rear clamping arm, the pull rod and the spring are matched with the pressing arm, an adjusting inner sleeve is arranged at the top of the front clamping arm, and an adjusting limiting sleeve matched with the adjusting inner sleeve is arranged at the top of the rear clamping arm. The pull rod is a threaded adjusting pull rod, one end of the threaded adjusting pull rod is connected to the pressing arm, the spring is arranged on the threaded adjusting pull rod in a sleeving mode, the other end of the threaded adjusting pull rod penetrates through the adjusting inner sleeve and the top of the front clamping arm and then is connected with an adjusting knob, and adjusting scales are arranged on the adjusting inner sleeve. Adjusting indication marks matched with the adjusting scales are arranged on the outer side of the adjusting knob. According to the utility model, the adjusting scales are designed on the adjusting inner sleeve, and the adjusting indication marks matched with the adjusting scales are designed on the adjusting knob, so that the scale at the optimal intonation position can be adjusted only through one-time sound testing, the scale is only required to be adjusted to the specified scale and then clamped in each time of use, the adjustment is very convenient, and the precision is high.

Description

Technical Field

[0001] The utility model relates to a guitar auxiliary tool, in particular to a high-precision clamping force regulating structure dedicated to a capo. Background Art

[0002] The original purpose of the capo was to adjust the pitch of the guitar. It is a common auxiliary tool in folk guitar playing and singing. When changing the key, it can press the existing fret to raise the tune to a corresponding interval, so that it can be coordinated with the singer's voice. The original fingering method is used to play, which greatly reduces the difficulty of changing the key. It is widely used in the performance of flamenco guitar, classical guitar and folk guitar. When used for solo repertoire, the capo is often placed between the first and fourth frets, among which the second fret has the highest frequency, and the use above the fourth fret is basically only seen in accompaniment.

[0003] Existing capos are roughly divided into two categories, one is fixed clamping, and the other is slidable clamping. Existing fixed clamping capos have the following defects: the clamping force is adjusted purely based on experience, and usually a test sound facility is still required for testing. It will be very troublesome to clamp and test once, especially during the performance. Utility Model Content

[0004] In order to solve the defects and shortcomings in the above-mentioned prior art, the utility model provides a high-precision clamping force adjustment structure specially designed for a capo with high precision and a wide range of applications, which is designed with an adjustment scale and an adjustment indicator mark matched with the adjustment scale. The scale of the best pitch position can be adjusted with only one trial sound test. Each time it is used, it only needs to be adjusted to the specified scale (the position of the adjustment indicator mark can also be observed and recorded) and then clamped. The adjustment is very convenient and the precision is high. The utility model has a high-precision clamping force adjustment structure specially designed for a capo with a wide range of applications.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-precision clamping force adjustment structure specially used for a capo, comprising a pull rod connecting a front clamping arm and a rear clamping arm, a clamping arm driving the pull rod to move, and a spring cooperating with the pull rod, an adjustment inner sleeve is provided on the top of the front clamping arm, and an adjustment limit sleeve cooperating with the adjustment inner sleeve is provided on the top of the rear clamping arm, the pull rod adopts a threaded adjustment pull rod, one end of the threaded adjustment pull rod is connected to the clamping arm, the spring is sleeved on the threaded adjustment pull rod, the other end of the threaded adjustment rod passes through the adjustment inner sleeve and the top of the front clamping arm and is connected to an adjustment knob, the adjustment inner sleeve is provided with an adjustment scale, and the outer side of the adjustment knob is provided with an adjustment indication mark cooperating with the adjustment scale.

[0006] The utility model is designed with an adjustment scale on the adjustment inner sleeve, and an adjustment indicator mark matching the adjustment scale is designed on the adjustment knob. The scale of the best pitch position can be adjusted with only one test sound. Each time it is used, it only needs to be adjusted to the specified scale (the position of the adjustment indicator mark can also be observed and recorded) and then clamped. The adjustment is very convenient, the precision is high, and the application range is wide.

[0007] Preferably, the adjustment knob comprises an integrally formed knob body and an internal thread joint, the internal thread joint is connected to a threaded adjustment rod, and the adjustment indication mark is arranged on the outside of the knob body.

[0008] This structure facilitates the assembly of the adjusting knob and the threaded adjusting rod, ensuring the stability and reliability of the adjustment.

[0009] Preferably, the threaded adjustment rod comprises an integrally formed external thread section and a smooth rod section, the other end of the external thread section is connected to an internal thread joint, the other end of the smooth rod section is connected to a clamping arm, and a short connecting rod matching the clamping arm is provided at the end of the smooth rod section.

[0010] This structure ensures the assembly reliability of the threaded adjustment rod and the clamping arm, thereby ensuring the stability and reliability of the clamping arm pulling the threaded adjustment rod.

[0011] Preferably, a circular recess matching the internal thread joint and an arc-shaped notch matching the knob body are provided on the outer side of the top of the front clamping arm, and the outer side surface of the knob body is flush with the outer side surface of the front clamping arm at the position of the arc-shaped notch.

[0012] This structure makes it possible to make the volume small and the appearance beautiful.

[0013] Preferably, the cross-section of the adjusting inner sleeve is square, ball grooves are provided on the four corners, and arc chamfers are provided at the ends of the adjusting inner sleeve.

[0014] This structure allows the ball bearing to be assembled, facilitating the movement of the adjustment inner sleeve inside the adjustment limit sleeve.

[0015] Preferably, a gap is left between the minimum scale position on the adjustment scale and the fixed end of the adjustment inner sleeve to cooperate with the movement of the clamping arm, and the maximum scale position on the adjustment scale is located in the middle position of the adjustment inner sleeve. When the adjustment knob rotates one circle, the distance the adjustment inner sleeve moves is the distance between the maximum scale position and the minimum scale position.

[0016] This structure enables the clamping arm to have a certain clamping distance, thus ensuring the reliability of the clamping.

[0017] Preferably, a limiting end cover is provided at the end of the adjustment limiting sleeve, anti-slip grooves are provided on the outer ring of the knob body, and a decorative panel is provided on the outer side surface of the knob body.

[0018] This structure further improves the movement stability of the adjusting inner sleeve in the adjusting limit sleeve and can also improve its aesthetics.

[0019] The utility model is designed with an adjustment scale on the adjustment inner sleeve, and an adjustment indicator mark matching the adjustment scale is designed on the adjustment knob. The scale of the best pitch position can be adjusted with only one test sound. Each time it is used, it only needs to be adjusted to the specified scale (observed through the adjustment indicator mark) and then clamped. The adjustment is very convenient, the precision is high, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an explosion schematic diagram of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the adjusting knob in the utility model.

[0023] Figure 4 It is a structural schematic diagram of the threaded adjustment rod in the utility model.

[0024] Figure 5 It is a structural schematic diagram of one angle of the front clamping arm in the utility model.

[0025] Figure 6 It is a schematic structural diagram of the front clamping arm in the utility model from another angle.

[0026] In the figure: 1. front clamping arm, 2. rear clamping arm, 3. clamping arm, 4. spring, 5. adjusting inner sleeve, 6. adjusting limit sleeve, 7. threaded adjustment rod, 8. adjusting knob, 9. adjusting scale, 10. adjusting indicator mark, 11. knob body, 12. internal thread joint, 13. external thread section, 14. bare rod section, 15. connecting short rod, 16. circular concave, 17. arc-shaped notch, 18. ball groove, 19. arc-shaped chamfer, 20. minimum scale position, 21. maximum scale position, 22. limit end cover, 23. decorative panel, 24. anti-slip pattern, 25. spring retaining ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0028] like Figure 1-6As shown, a high-precision clamping force adjustment structure for a capo clamp includes a pull rod connecting a front clamping arm 1 and a rear clamping arm 2, a clamping arm 3 driving the pull rod to move, and a spring 4 cooperating with the pull rod. An adjusting inner sleeve 5 is provided at the top of the front clamping arm 1, and an adjusting limit sleeve 6 cooperating with the adjusting inner sleeve 5 is provided at the top of the rear clamping arm 2. The pull rod adopts a threaded adjusting pull rod 7, one end of the threaded adjusting pull rod 7 is connected to the clamping arm 3, and the spring 4 is sleeved on the threaded adjusting pull rod 7. A spring retaining ring 25 cooperating with the spring 4 is provided inside the adjusting inner sleeve 5. The other end of the threaded adjusting pull rod 7 passes through the adjusting inner sleeve 5 and the top of the front clamping arm 1 and is connected to an adjusting knob 8. An adjusting scale 9 is provided on the adjusting inner sleeve 5, and an adjusting indicator mark 10 cooperating with the adjusting scale 9 is provided on the outer side of the adjusting knob 8. The adjusting knob 8 includes an integrally formed knob body 11 and an internal thread joint 12, the internal thread joint 12 is connected to the threaded adjusting pull rod 7, and the adjusting indicator mark 10 is arranged on the outer side of the knob body 11. The threaded adjustment rod 7 includes an integrally formed external thread section 13 and a polished rod section 14. The other end of the external thread section 13 is connected to the internal thread joint 12. The other end of the polished rod section 14 is connected to the clamping arm 3. A connecting short rod 15 matching the clamping arm 3 is provided at the end of the polished rod section 14. A circular concave 16 matching the internal thread joint 12 and an arc-shaped notch 17 matching the knob body 11 are provided on the top outer side of the front clamping arm 1. The outer side surface of the knob body 11 is flush with the outer side surface of the front clamping arm 1 at the position of the arc-shaped notch 17. The cross section of the adjusting inner sleeve 5 is square, with ball grooves 18 at the four corners, and an arc-shaped chamfer 19 is provided at the end of the adjusting inner sleeve 5. There is a gap between the minimum scale position 20 on the adjustment scale 9 and the fixed end of the adjustment inner sleeve 5 to match the movement of the clamping arm 3. The maximum scale position 21 on the adjustment scale 9 is located in the middle of the adjustment inner sleeve 5. When the adjustment knob 8 rotates one circle, the distance moved by the adjustment inner sleeve 5 is the distance between the maximum scale position 21 and the minimum scale position 20. A limit end cap 22 is provided at the end of the adjustment limit sleeve 6, an anti-slip pattern 24 is provided on the outer ring of the knob body 11, and a decorative panel 23 is provided on the outer side of the knob body.

[0029] When in use, the clamping arm is opened and clamped to the guitar's tuning position, the clamping arm is pressed, and the adjusting knob and the front clamping arm are driven to move in the direction of the rear clamping arm through the threaded adjustment rod, so that the front clamping arm and the rear clamping arm are clamped on the guitar. At this time, the spring is pressed and pressed by the spring retaining ring inside the adjustment inner sleeve, and the sound testing instrument is connected to the guitar. When the tone is too high or too low, the clamping arm is opened, and the adjusting knob is driven to move in the opposite direction of the rear clamping arm through the threaded adjustment rod. At this time, the spring is reset, which will push the front clamping arm to move in the opposite direction of the rear clamping arm, exposing the adjustment scale on the adjustment inner sleeve. After manually rotating the adjustment knob for a certain angle, the position of the adjustment scale is recorded, and then the clamping arm is pressed again, and the sound testing is continued until the tone is accurate. At this time, the scale that the guitar needs to be adjusted at this position can be judged by observing the position of the adjustment indicator mark on the adjustment knob, and the position of the adjustment indicator mark is recorded. The next time it is used, there is no need to open the clamping arm again for adjustment. Just align the adjustment indicator mark directly with the position, which is very convenient to use.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision clamping force adjustment structure for a capo, characterized in that: It includes a pull rod connecting the front clamping arm and the rear clamping arm, a clamping arm that drives the pull rod to move, and a spring that cooperates with the pull rod. An adjusting inner sleeve is provided at the top of the front clamping arm, and an adjusting limit sleeve that cooperates with the adjusting inner sleeve is provided at the top of the rear clamping arm. The pull rod adopts a threaded adjusting pull rod, one end of the threaded adjusting pull rod is connected to the clamping arm, and the spring is sleeved on the threaded adjusting pull rod. A spring retaining ring that cooperates with the spring is provided inside the adjusting inner sleeve, and the other end of the threaded adjusting pull rod passes through the adjusting inner sleeve and the top of the front clamping arm and is connected to an adjusting knob. An adjusting scale is provided on the adjusting inner sleeve, and an adjustment indicator mark that cooperates with the adjusting scale is provided on the outer side of the adjusting knob.

2. The high-precision clamping force adjustment structure for a capo as claimed in claim 1, characterized in that: The adjusting knob comprises an integrally formed knob body and an internal thread joint, the internal thread joint is connected to a threaded adjusting rod, and the adjusting indication mark is arranged on the outside of the knob body.

3. The high-precision clamping force adjustment structure for a capo as claimed in claim 2, characterized in that: The threaded adjustment rod comprises an integrally formed external thread section and a polished rod section, the other end of the external thread section is connected to an internal thread joint, the other end of the polished rod section is connected to a clamping arm, and a connecting short rod matching the clamping arm is provided at the end of the polished rod section.

4. The high-precision clamping force adjustment structure for a capo as claimed in claim 2, characterized in that: The outer side of the top of the front clamping arm is provided with a circular concave matched with the internal thread joint and an arc-shaped notch matched with the knob body, and the outer side surface of the knob body is flush with the outer side surface of the front clamping arm at the position of the arc-shaped notch.

5. The high-precision clamping force adjustment structure for a capo as claimed in claim 1, characterized in that: The cross section of the adjusting inner sleeve is square, ball grooves are arranged on the four corners, and arc chamfers are arranged at the ends of the adjusting inner sleeve.

6. The high-precision clamping force adjustment structure for a capo as claimed in claim 1, characterized in that: A gap is left between the minimum scale position on the adjustment scale and the fixed end of the adjustment inner sleeve to cooperate with the movement of the clamping arm. The maximum scale position on the adjustment scale is located in the middle position of the adjustment inner sleeve. When the adjustment knob rotates one circle, the distance moved by the adjustment inner sleeve is the distance between the maximum scale position and the minimum scale position.

7. The high-precision clamping force adjustment structure for a capo as claimed in claim 2, characterized in that: The end of the adjustment limit sleeve is provided with a limit end cover, the outer ring of the knob body is provided with anti-slip grooves, and the outer side surface of the knob body is provided with a decorative panel.

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