A capo

Abstract

The present invention provides a capo, comprising a clamping arm, wherein the clamping arm is a telescopic clamping arm, and the clamping arms are respectively a first clamping arm, which is used for clamping the front side of a guitar neck; a second clamping arm, whose rotating end is rotatably connected with the rotating end of the first clamping arm through a fastener on one hand, and connected through a rotating spring on the other hand, and is used for clamping the side and back sides of the guitar neck; a closing arm, one end of which is rotatably connected with the second clamping arm, and the other end of which can be clamped on the free end of the first clamping arm, and is used for clamping the other side of the guitar neck, forming an adaptive trapezoidal surrounding structure. The capo of the present invention can automatically surround and adjust the clamping length to adapt to the width of different parts of the guitar neck, and is flexible and convenient to slide, and has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of a guitar capo, in particular to an adaptively surrounded capo. Background Art

[0002] The original purpose of a capo is 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, a capo is often placed between the first and fourth frets, among which the frequency of being placed on the second fret is the highest, and the use above the fourth fret is basically only seen in accompaniment.

[0003] Existing capos are mainly classified into two categories: one is a fixed clamping type capo, and the other is a slidable capo.

[0004] A fixed clamp type capo such as Figure 1 As shown, including a first grip 1 ， , Second grip 2 ， , first clamping arm 3 ， and the second clamping arm 4 ， , first grip 1 ， and the first clamping arm 3 ， The second clamping arm 4 is arranged at a right angle and integrally formed. ， The rotating end and the first clamping arm 3 ， The hinged connection with the first clamping arm 3 is realized by the hinged setting of the hinge shaft ， relative rotation, adjusting the first clamping arm 3 ， The angle between the second clamping arm 4 ， With the first grip 1 ， Connected by a telescopic spring, the second grip 2 ， Set on the second clamping arm 4 ， Before playing the guitar, the strings on the guitar are clamped by holding two grips and adjusting the angle between the two clamping arms to adjust the tone. However, a capo with this structure is fixed and cannot slide, and cannot quickly adjust the tone that needs to be changed. It is very difficult to use. At the same time, the capo is large in size, and the grip exposed to the outside is easily touched, causing the capo to tilt, affecting the tone. At the same time, the appearance is not beautiful.

[0005] A slidable capo, announcement number CN206097886U, patent name A guitar automatic capo, such as Figure 2 As shown, including front roller 5 ， and rear roller 6， , the front roller 5 ， And rear roller 6 ， The center is respectively connected with the front shaft 7 ， And rear shaft 8 ， , the rear shaft 8 ， The upper two ends are respectively connected to the left rear sleeve 9 ， And right rear casing 10 ， , the right rear casing 10 ， Through the elastic member and the hollow connecting sleeve 11 ， connection, the connecting sleeve 11 ， With front shaft 7 ， There is an end connection, the front shaft 7 ， Connect the front sleeve 12 on the left end ， , the front sleeve 12 ， With rear shaft 8 ， Upper left rear casing 9 ， Interconnecting elastic member 13 ， A capo with this structural setting has the following disadvantages:

[0006] 1. Because the two sides are elastic, when clamping the guitar strings, the two sides of the guitar are not tightly held, and it is easy to tilt and become unstable when sliding;

[0007] Second, since the clamping length is fixed and cannot change adaptively, it cannot meet the clamping needs of guitar necks of different widths, and its application range is limited;

[0008] 3. It can only be clamped from the front, not from the back, and is not suitable for situations where several strings need to be fixed.

[0009] 4. The wheel is directly connected to the roller. When adjusting the frets, the sliding of the wheel is not smooth enough and sometimes gets stuck, affecting the use and playing effect.

[0010] 5. The elastic part is directly exposed to the outside and connected to the two sleeves, which is easy to rust, which not only affects the appearance but also affects the overall service life of the product. Summary of the invention

[0011] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a capo that can automatically adjust the clamping length to adapt to the width of different parts of the neck, is flexible and convenient to slide, and is highly practical.

[0012] To achieve the above-mentioned purpose, the present invention proposes a capo, comprising a clamping arm, wherein the clamping arm is a telescopic clamping arm, and the clamping arms are respectively a first clamping arm, which is used for clamping the front side of the guitar neck; a second clamping arm, whose rotating end is rotationally connected to the rotating end of the first clamping arm on the one hand by a fastener, and is connected on the other hand by a rotating spring, and is used for clamping the side and back sides of the guitar neck; a closing arm, one end of which is rotationally connected to the second clamping arm, and the other end can be clamped on the free end of the first clamping arm, and is used for clamping the other side of the guitar neck, forming an adaptive trapezoidal surrounding structure.

[0013] The innovation of the present invention lies in that: by setting clamping arms, the clamping arms are respectively a first clamping arm, a second clamping arm and a closing arm, the first clamping arm and the second clamping arm are rotatably connected to adjust the clamping angle therebetween, the closing arm and the second clamping arm are rotatably connected to engage with the first clamping arm to form an enclosed trapezoidal structure, and at the same time the clamping arms are set as a retractable structure, so that when clamping and enclosing the frets on the guitar neck, the length of the clamping arms can be automatically adjusted to adapt to the width of the guitar neck, and the clamping is very convenient.

[0014] Preferably, the clamping arm comprises a basic arm and a telescopic arm, the telescopic arm is clamped in the basic arm and can slide relatively, and the basic arm and the telescopic arm are provided with protrusions for connecting telescopic springs at opposite ends; such a setting is convenient for telescopic and meets the requirements of adaptability.

[0015] Preferably, the basic arm and the telescopic arm are of a semi-closed structure, the telescopic spring is located in the basic arm and the telescopic arm, and a built-in groove for installing a roller is provided on the side of the telescopic spring in the clamping arm, a support is provided in the built-in groove, and the roller is fixed on the support through a roller; the basic arm and the telescopic arm arranged in the semi-closed structure wrap the telescopic spring inside, thereby protecting the telescopic spring, making it not easy to rust and extending its service life; on the other hand, the rollers of the first clamping arm and the closing arm are installed in the basic arm, and rollers are provided on both sides of the telescopic spring in the second clamping arm, which are respectively installed in the basic arm and the telescopic arm; on the one hand, the rollers arranged on the front and back sides cooperate with the adaptive telescopic structure to realize a slidable adaptive telescopic surrounding structure, which has a wide range of applications and is easy to use; on the other hand, compared with the clamping of the transmission telescopic spring, the rollers arranged on both sides have a strong clamping force, a good holding degree and stable sliding.

[0016] Preferably, the roller includes a roller, a bearing, a metal sleeve and a rolling sleeve, the roller is provided with a plurality of bearings, the metal sleeve is embedded in the rolling sleeve, and after the roller is inserted into the metal sleeve, the bearing is connected to the inner wall of the metal sleeve; compared with the traditional roller directly set on the rotating shaft, the rolling is not smooth enough and it is easy to get stuck, the structural setting of this roller effectively avoids the occurrence of such a situation, and it is very smooth when clamping and sliding.

[0017] Preferably, the roller is a stainless steel shaft, the bearing is a miniature bearing, the metal sleeve is a stainless steel sleeve, and the roller sleeve is a silicone roller sleeve.

[0018] Preferably, the curvature of the rolling sleeve surface is set to be higher at both ends and lower in the middle, so as to better fit the surface of the guitar with strings.

[0019] Preferably, the closing arm and the second clamping arm are connected by bolts to achieve a detachable rotatable connection, and the horizontal length of the basic arm of the second clamping arm is smaller than the length of the first clamping arm. With such an arrangement, when all the strings of one of the frets need to be clamped, the first clamping arm is used for front clamping in the present invention, and when part of the strings of one of the frets need to be clamped, the basic arm of the second clamping arm is used for back clamping, thereby achieving the dual performance of the present invention of clamping on both the front and back sides.

[0020] Preferably, the capo also includes a folding arm, which is coaxially rotatable with the first clamping arm and the second clamping arm. When the folding arm rotates in the direction of the second clamping arm, it can be restricted to one side of the second clamping arm. At this time, the closing arm is disconnected from the first clamping arm and rotates downward to form a right angle with the second clamping arm. The folding arm and the closing arm have the function of a grip. The folding arm and the closing arm are held by hand to adjust the clamping angle of the first clamping arm and the second clamping arm to clamp and fix the strings. When the folding arm rotates in the direction of the first clamping arm, it can overlap with the first clamping arm. In this way, after clamping is completed, the folding arm can be hidden to avoid being hit and causing the present invention to tilt. At the same time, the overall volume is effectively reduced, and it is also easy to carry.

[0021] Preferably, a rotation groove is provided at the rotating end of the folding arm, and a limit bar is provided on the first folding arm. The limit bar is inserted into the rotation groove to limit the rotation range of the folding arm for easy holding.

[0022] Preferably, a limiting step is provided below the rotating end of the closing arm, which is used to limit the closing arm when it rotates downward, making it easier to hold.

[0023] The beneficial effects of the present invention are as follows: by arranging a retractable clamping arm, the clamping arms are respectively a first clamping arm, a second clamping arm and a closing arm, and the first clamping arm, the second clamping arm and the closing arm are combined into a retractable adaptive trapezoidal enclosing structure, which is suitable for clamping guitar necks of different widths, has a wide range of applications, and is suitable for clamping on the front and back sides; by arranging a roller connected by a bearing in the clamping arm, the sliding is smooth and stable during fluctuation, the clamping degree on both sides is good, and the clamping is stable; the folding arm is not only easy to operate, but also can be effectively hidden, thereby improving the stability performance during clamping.

[0024] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a structural schematic diagram of an existing fixed clamping type capo.

[0026] Figure 2 The utility model is a structural schematic diagram of an existing sliding type capo.

[0027] Figure 3 The structure of the present invention is schematically shown in FIG. Figure 1 .

[0028] Figure 4 The structure of the present invention is schematically shown in FIG. Figure 2 .

[0029] Figure 5 The structure of the present invention is schematically shown in FIG. Figure 3 .

[0030] Figure 6 It is a schematic structural diagram of the closing arm of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the roller of the present invention.

[0032] In the figure: 1-basic arm, 2-telescopic arm, 3-bump, 4-telescopic spring, 5-first clamping arm, 6-second clamping arm, 7-closing arm, 8-rotation spring, 9-roller, 10-support, 91-roller, 92-bearing, 93-metal sleeve, 94-rolling sleeve, 11-folding arm, 111-groove, 112-rotation groove, 51-limiting strip, 71-limiting step. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention 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 present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0034] A capo of the present embodiment, such as Figures 3 to 7 As shown, it includes a clamping arm, which is configured to be retractable, including a basic arm 1 and a telescopic arm 2. The basic arm 1 and the telescopic arm 2 are configured to be semi-enclosed to match the installation of the roller. The telescopic arm 2 is clamped in the basic arm 1 and can slide relatively. The opposite ends of the telescopic arm 2 and the basic arm 1 are both provided with convex points 3, and the telescopic spring 4 connects the two convex points 3. In this way, when clamping the guitar, the telescopic arm 2 and the basic arm 1 are automatically extended and retracted for the width of the guitar neck. In the present invention, the telescopic arm 2 and the basic arm 1 are configured to be semi-enclosed, and the telescopic spring 4 is arranged therein, which has a certain protective effect and is not easy to rust.

[0035] There are three clamping arms, namely the first clamping arm 5, the second clamping arm 6 and the closing arm 7. The first clamping arm 5 and the second clamping arm 6 are rotatably connected by rivets. A rotation spring 8 is also connected to the rotating ends of the first clamping arm 5 and the second clamping arm 6. The rotation spring 8 can be a torsion spring. One end of the closing arm 7 is detachably and rotatably connected to the second clamping arm 6 by a bolt, and the other end can be engaged with the first clamping arm 5 to form a closed structure. At this time, the first clamping arm 5 is used to clamp the front side of the guitar neck. The telescopic arm 2 of the second clamping arm 6 is connected to the basic arm 1 at an obtuse angle, which is used for clamping the side and back of the guitar neck. The closing arm 7 is used for clamping the other side of the guitar neck, forming an adaptive trapezoidal enclosing structure with the first clamping arm 5, the second clamping arm 6 and the closing arm 7.

[0036] Among them, the telescopic arms 2 of the first clamping arm 5 and the closing arm 7 are connected to a telescopic spring 8 at one end sliding in the basic arm 1, and a roller 9 is provided at the other end, which is respectively used for clamping and rolling on the front and side surfaces; the telescopic arms 2 of the second clamping arm 6 are connected to a telescopic spring 8 at one end sliding in the basic arm 1, and a roller 9 is provided at the other end; at the same time, the basic arm 1 of the second clamping arm 6 is also provided with a roller 9, which is respectively used for clamping and rolling on the back and the other side surfaces; specifically, a built-in groove is provided at a corresponding position in the clamping arm, a support 10 is provided in the built-in groove, and the roller 9 is fixed on the support 10 through a roller shaft 91; more specifically The roller 9 includes a roller 91, a bearing 92, a metal sleeve 93 and a rolling sleeve 94. Three bearings 92 are arranged on the roller 91. The metal sleeve 93 is embedded in the rolling sleeve 94. After the roller 91 is inserted into the metal sleeve 93, the bearing 92 is connected to the inner wall of the metal sleeve 93 to realize the effective rolling of the roller 9. In order to adapt to the overall volume and rigidity, the roller 91 of the present invention is made of steel needles, the bearing 92 is made of miniature bearings 92, the metal sleeve 93 is made of steel sleeves, and the rolling sleeve 94 is made of silicone sleeves; the rolling sleeve 94 is cylindrical, preferably a cylindrical shape with slightly larger arc ends so as to better fit the surface of the guitar neck.

[0037] As a preferred embodiment, the length of the basic arm 1 in the second clamping arm 6 of the present invention is set to be smaller than the length of the first clamping arm 5, so as to realize the double-sided clamping of the present invention. When the basic arm 1 of the second clamping arm 6 is used as the front clamping, it can choose to clamp part of the strings to meet the needs of playing.

[0038] A capo also includes a folding arm 11, which is coaxially connected to the first clamping arm 5 and the second clamping arm 6 by rivets. A groove 111 is provided on one side of the folding arm 11. When the folding arm 11 is rotated in the direction of the first clamping arm 5, it can be sleeved on the first clamping arm 5 and overlap with the first clamping arm 5. When the folding arm 11 is rotated in the direction of the second clamping arm 6, it needs to be limited to play the role of a gripping rod. A rotation groove 112 is provided at the rotating end of the folding arm 11, and a limiting strip 51 is provided on one side of the rotating end of the first clamping arm 5. The limiting strip 51 is inserted into the rotation groove 112 and limited when the folding arm 11 is rotated to the second clamping arm 6 side. In order to cooperate with the folding arm 11 and adjust the angle between the first clamping arm 5 and the second clamping arm 6, the closing arm 7 rotates downward to play the role of a gripping rod and also needs to be limited. Therefore, a limiting step 71 is provided below the rotating end where the closing arm 7 is connected to the second clamping arm 6. When the closing arm 7 is rotated to be perpendicular to the second clamping arm 6, the limiting step 71 abuts against the lower side of the second clamping arm 6 for limiting.

[0039] When in use, the free ends of the folding arm 11 and the closing arm 7 of the present invention are rotated downward to the lowest point, and the folding arm 11 and the closing arm 7 are held by hand to increase the angle between the first clamping arm 5 and the second clamping arm 6, and then the first clamping arm 5 clamps all the strings of the same fret on the front side of the neck; if only part of the strings of the same fret need to be clamped, the closing arm 7 is removed, and the basic arm 1 of the second clamping arm 6 clamps part of the strings.

[0040] 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 should be included in the protection scope of the present invention.

Claims

1. A capo, characterized in that: The clamping arm comprises a retractable clamping arm, and the clamping arms are respectively a first clamping arm used for clamping the front side of the guitar neck; a second clamping arm, whose rotating end is rotatably connected to the rotating end of the first clamping arm through a fastener on one hand, and is connected through a rotating spring on the other hand, and is used for clamping the side and back side of the guitar neck; A closing arm, one end of which is rotatably connected to the second clamping arm, and the other end of which can be clamped in the free end of the first clamping arm, for clamping the other side of the guitar neck to form an adaptive trapezoidal surrounding structure; the clamping arm includes a basic arm and a telescopic arm, the telescopic arm is clamped in the basic arm and can slide relatively, and the opposite ends of the basic arm and the telescopic arm are both provided with convex points for connecting with a telescopic spring; the basic arm and the telescopic arm are semi-closed structures, the telescopic spring is located in the basic arm and the telescopic arm, and the side of the telescopic spring in the clamping arm is provided with a built-in groove for installing a roller, a support is provided in the built-in groove, and the roller is fixed to the support through a roller; the closing arm is connected to the second clamping arm by bolts to achieve a detachable rotatable connection, and the horizontal length of the basic arm of the second clamping arm is less than the length of the first clamping arm; this kind of capo also includes a folding arm, and a groove is provided on one side of the folding arm.

2. The capo as claimed in claim 1, characterized in that: The roller comprises a roller, a bearing, a metal sleeve and a roller sleeve. The roller is provided with a plurality of bearings. The metal sleeve is embedded in the roller sleeve. After the roller is inserted into the metal sleeve, the bearing is connected to the inner wall of the metal sleeve.

3. The capo as claimed in claim 2, characterized in that: The roller is a stainless steel shaft, the bearing is a miniature bearing, the metal sleeve is a stainless steel sleeve, and the roller sleeve is a silicone roller sleeve.

4. The capo as claimed in claim 2, characterized in that: The curvature of the rolling sleeve surface is set to be higher at both ends and lower in the middle.

5. The capo according to any one of claims 1 to 4, characterized in that: The folding arm is coaxially rotatably arranged with the first clamping arm and the second clamping arm. When the folding arm rotates toward the first clamping arm, it can overlap with the first clamping arm, and when it rotates toward the second clamping arm, it can be restricted to one side of the second clamping arm, so as to adjust the clamping angle between the first clamping arm and the second clamping arm.

6. The capo as claimed in claim 5, characterized in that: A rotation groove is provided at the rotation end of the folding arm, and a limit bar is provided on the first clamping arm. The limit bar is inserted into the rotation groove to limit the rotation range of the folding arm.

7. The capo as claimed in claim 5, characterized in that: A limiting step is provided below the rotating end of the closing arm.

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