Three-roller structure special for roller type capo

Abstract

The utility model discloses a special three-roller structure for a roller type capo, which comprises a front roller assembly mounted on a front clamping arm and two rear roller assemblies mounted on a rear clamping arm, and the front roller assembly and the two rear roller assemblies are vertically mounted. The width of the portion, arranged side by side, of the two rear rolling wheel assemblies is larger than that of the rear clamping arm, a gap is reserved between the two rear rolling wheel assemblies, and the front rolling wheel assembly is aligned to the portion between the two rear rolling wheel assemblies. According to the utility model, a three-fulcrum clamping structure in which the two rear roller groups are matched with the front roller group is adopted, so that the clamping is stable and reliable, the rear clamping arms can be prevented from shaking during sliding, the sliding is smooth and reliable, and the tuning precision is ensured.

Description

Technical Field

[0001] The utility model relates to a guitar auxiliary tool, in particular to a three-roller structure special for a roller-type 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 slidable clamping capos have the following defects: generally a double roller structure is adopted, that is, a front clamping arm is equipped with a front roller, and a rear clamping arm is equipped with a rear roller. On the one hand, since the rollers are curved surfaces, double fulcrum clamping is adopted during clamping, which affects its clamping stability; on the other hand, since the width of the rear clamping arm is usually larger than the width of the rear roller, when sliding, the rear clamping arm is usually pushed hard, resulting in a certain shaking of the rear clamping arm, which not only affects the smoothness of sliding, but also affects the tuning accuracy. Utility Model Content

[0004] In order to solve the defects and shortcomings in the above-mentioned prior art, the utility model provides a three-point clamping structure using two rear roller groups and one front roller group, so that the clamping is stable and reliable, and the shaking of the rear clamping arm can be prevented during sliding, thereby ensuring smooth and reliable sliding, thereby ensuring the tuning accuracy of the roller-type capo special three-roller structure.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a three-roller structure specially used for a roller-type capo, comprising a front roller assembly installed on a front clamping arm and two rear roller assemblies installed on a rear clamping arm, wherein the front roller assembly and the two rear roller assemblies are both installed vertically, the width of the two rear roller assemblies arranged side by side is greater than the width of the rear clamping arm, and a gap is left between the two rear roller assemblies, and the front roller assembly is aligned between the two rear roller assemblies.

[0006] The utility model adopts a three-point clamping structure of two rear roller groups and one front roller group, so that the clamping is stable and reliable, and the rear clamping arm can be prevented from shaking during sliding, thereby ensuring smooth and reliable sliding, thereby ensuring tuning accuracy.

[0007] Preferably, the front roller assembly comprises a front roller and a front roller shaft, a front roller sleeve is provided inside the front roller, and two ends of the front roller sleeve are respectively connected to the front roller shaft through front roller bearings.

[0008] This structure ensures the clamping strength of the front roller on the one hand, and ensures the installation stability of the front roller on the other hand.

[0009] Preferably, the outer diameter of the front roller gradually decreases from the two ends to the middle, the two ends of the front roller sleeve are provided with front roller bearing seats that match the front roller bearings, and the two ends of the front roller are provided with front roller bearing seat limiting rings that match the front roller bearing seats.

[0010] This structure allows the front roller to well match the shape of the front of the guitar on the one hand, and ensures the sliding stability and reliability of the front roller on the other hand.

[0011] Preferably, the two ends of the front roller shaft are respectively installed on the front clamping arm through a front limit seat and a front limit bolt that cooperate with each other. The front limit seat is provided with at least one front limit bolt hole, and the end of the front roller shaft extends into the front limit seat and is limited by the front limit bolt.

[0012] This structure facilitates the limiting of the front roller shaft, thereby facilitating the limiting of the front roller.

[0013] Preferably, the front end of the front limiting bolt is screwed into the front limiting bolt hole, and the bolt head of the front limiting bolt axially limits the front roller shaft.

[0014] This structure further ensures the reliability of the limiting of the front roller.

[0015] Preferably, the rear roller assembly comprises a rear roller and a rear roller shaft, a rear roller sleeve is provided inside the rear roller, and both ends of the front roller sleeve are connected to the rear roller shaft through rear roller bearings respectively.

[0016] This structure ensures the clamping strength of the rear roller on the one hand, and ensures the installation stability of the rear roller on the other hand.

[0017] Preferably, the outer diameter of the rear roller gradually decreases from both ends to the middle, and rear roller bearing seats matching the rear roller bearings are provided at both ends of the rear roller sleeve, and rear roller bearing seat limiting rings matching the rear front roller bearing seats are provided at both ends of the rear roller.

[0018] This structure allows the rear roller to match the shape of the front of the guitar well on the one hand, and ensures the sliding stability and reliability of the rear roller on the other hand.

[0019] Preferably, both ends of the rear roller shaft are respectively installed on the rear clamping arm through a rear limit seat and a rear limit bolt that cooperate with each other, and a rear limit bolt hole is provided on the rear limit seat, and the end of the rear roller shaft extends into the rear limit seat and is limited by the rear limit bolt.

[0020] This structure facilitates the limiting of the rear roller shaft, thereby facilitating the limiting of the rear roller.

[0021] Preferably, the front end of the rear limiting bolt is screwed into the rear limiting bolt hole, and the middle part and the bolt head of the rear limiting bolt axially limit the rear roller shaft.

[0022] This structure further ensures the reliability of the limiting of the rear roller.

[0023] The utility model adopts a three-point clamping structure of two rear roller groups and one front roller group, so that the clamping is stable and reliable, and the rear clamping arm can be prevented from shaking during sliding, thereby ensuring smooth and reliable sliding, thereby ensuring tuning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model after removing the rear limit seat.

[0025] Figure 2 It is an exploded schematic diagram of the front roller assembly in the utility model.

[0026] Figure 3 It is a structural schematic diagram of the front roller assembly of the utility model installed on the front clamping arm.

[0027] Figure 4 It is an exploded schematic diagram of the rear roller assembly in the utility model.

[0028] Figure 5 This is a structural schematic diagram of the rear roller assembly of the utility model being installed on the rear clamping arm and one of the rear limit bolts being removed.

[0029] In the figure: 1. front roller, 2. front roller shaft, 3. front roller sleeve, 4. front roller bearing, 5. front roller bearing seat, 6. front roller bearing seat limiting ring, 7. front limiting seat, 8. front limiting bolt, 9. front limiting bolt hole, 10. front clamping arm, 11. rear roller, 12. rear roller shaft, 13. rear roller sleeve, 14. rear roller bearing, 15. rear roller bearing seat, 16. rear roller bearing seat limiting ring, 17. rear limiting seat, 18. rear limiting bolt, 19. rear limiting bolt hole, 20. rear clamping arm. DETAILED DESCRIPTION

[0030] 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.

[0031] like Figure 1-5 As shown, a three-roller structure dedicated to a roller-type capo includes a front roller assembly installed on a front clamping arm 10 and two rear roller assemblies installed on a rear clamping arm 20. The front roller assembly and the two rear roller assemblies are installed vertically, and the width of the two rear roller assemblies arranged side by side is greater than the width of the rear clamping arm 20, and a gap is left between the two rear roller assemblies, and the front roller assembly is aligned between the two rear roller assemblies.

[0032] The front roller assembly includes a front roller 1 and a front roller shaft 2. A front roller sleeve 3 is provided inside the front roller 1. Both ends of the front roller sleeve 3 are connected to the front roller shaft 2 through front roller bearings 4. The outer diameter of the front roller 1 gradually decreases from both ends to the middle. Both ends of the front roller sleeve 3 are provided with front roller bearing seats 5 that match the front roller bearings 4. Both ends of the front roller 1 are provided with front roller bearing seat limit rings 6 that match the front roller bearing seats 5. Both ends of the front roller shaft 2 are respectively installed on the front clamping arm 10 through mutually matching front limit seats 7 and front limit bolts 8. Two front limit bolt holes 9 are provided on the top front limit seat 7, and one front limit bolt hole 9 is provided on the bottom front limit seat 7. The end of the front roller shaft 2 extends into the front limit seat 7 and is limited by the front limit bolt 8. The front end of the front limit bolt 8 is screwed into the front limit bolt hole 9, and the bolt head of the front limit bolt 8 limits the front roller shaft 2 axially.

[0033] The rear roller assembly includes a rear roller 11 and a rear roller shaft 12. A rear roller sleeve 13 is provided inside the rear roller 11. Both ends of the front roller sleeve 13 are connected to the rear roller shaft 12 through rear roller bearings 14. The outer diameter of the rear roller 11 gradually decreases from both ends to the middle. Both ends of the rear roller sleeve 13 are provided with rear roller bearing seats 15 that match the rear roller bearings 14. Both ends of the rear roller 11 are provided with rear roller bearing seat limit rings 16 that match the rear front roller bearing seats 15. Both ends of the rear roller shaft 12 are respectively installed on the rear clamping arm 20 through a rear limit seat 17 and a rear limit bolt 18 that match each other. The rear limit seat 17 is provided with a rear limit bolt hole 19. The end of the rear roller shaft 12 extends into the rear limit seat 17 and is limited by the rear limit bolt 18. The front end of the rear limiting bolt 18 is screwed into the rear limiting bolt hole 19 , and the middle part and the bolt head of the rear limiting bolt 18 axially limit the rear roller shaft 12 .

[0034] When the utility model is used, the front roller presses against the front side of the guitar, the rear roller presses against the rear side of the guitar, and the tuning clip is plucked by fingers to slide on the guitar. Since the width of the two rear rollers arranged side by side is slightly larger than the width of the rear clamping arm, the rear clamping arm can be well prevented from shaking when the tuning clip slides.

[0035] 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 three-roller structure for a roller-type capo, characterized in that: It includes a front roller assembly installed on the front clamping arm and two rear roller assemblies installed on the rear clamping arm. The front roller assembly and the two rear roller assemblies are installed vertically. The width of the two rear roller assemblies arranged side by side is greater than the width of the rear clamping arm, and a gap is left between the two rear roller assemblies. The front roller assembly is aligned between the two rear roller assemblies.

2. The three-roller structure for roller-type capo as claimed in claim 1, characterized in that: The front roller assembly comprises a front roller and a front roller shaft. A front roller sleeve is arranged inside the front roller. Both ends of the front roller sleeve are connected to the front roller shaft through front roller bearings.

3. The three-roller structure for roller-type capo as claimed in claim 2, characterized in that: The outer diameter of the front roller gradually decreases from the two ends to the middle, the two ends of the front roller sleeve are provided with front roller bearing seats matching the front roller bearings, and the two ends of the front roller are provided with front roller bearing seat limiting rings matching the front roller bearing seats.

4. The three-roller structure for roller-type capo as claimed in claim 2, characterized in that: The two ends of the front roller shaft are respectively installed on the front clamping arm through the front limit seat and the front limit bolt that cooperate with each other. The front limit seat is provided with at least one front limit bolt hole. The end of the front roller shaft extends into the front limit seat and is limited by the front limit bolt.

5. The three-roller structure for roller-type capo as claimed in claim 4, characterized in that: The front end of the front limiting bolt is screwed into the front limiting bolt hole, and the bolt head of the front limiting bolt limits the front roller shaft in the axial direction.

6. The three-roller structure for roller-type capo as claimed in claim 1, characterized in that: The rear roller assembly comprises a rear roller and a rear roller shaft. A rear roller sleeve is arranged inside the rear roller. Both ends of the front roller sleeve are connected to the rear roller shaft through rear roller bearings.

7. The three-roller structure for roller-type capo as claimed in claim 6, characterized in that: The outer diameter of the rear roller gradually decreases from the two ends to the middle, the two ends of the rear roller sleeve are provided with rear roller bearing seats matching the rear roller bearings, and the two ends of the rear roller are provided with rear roller bearing seat limiting rings matching the rear front roller bearing seats.

8. The three-roller structure for roller-type capo as claimed in claim 6, characterized in that: The two ends of the rear roller shaft are respectively installed on the rear clamping arm through a rear limit seat and a rear limit bolt that cooperate with each other. The rear limit seat is provided with a rear limit bolt hole, and the end of the rear roller shaft extends into the rear limit seat and is limited by the rear limit bolt.

9. The three-roller structure for roller-type capo as claimed in claim 8, characterized in that: The front end of the rear limiting bolt is screwed into the rear limiting bolt hole, and the middle part and the bolt head of the rear limiting bolt axially limit the rear roller shaft.

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