Guitar chord aid
By combining the frame design of the limiting block and the binding structure with the supporting ribs and the upward-curving finger plate, the problems of squeezing damage and applicability of guitar auxiliary devices are solved, achieving stable installation and finger plate stability, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU BEND TECHNOLOGY CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-08-04
AI Technical Summary
Existing guitar auxiliary devices are prone to causing guitar damage due to excessive localized force, and are difficult to adapt to guitars of different sizes. They also have complex installation structures and high costs, and the fingerboards are easily deformed, affecting the performance.
The frame design combines limiting blocks and restraint structures. It uses corner grooves to engage with the neck to limit movement and avoid large-area contact. Combined with supporting ribs and an upturned fretting bar structure, it ensures installation stability and pressing effect.
It effectively avoids guitar compression damage, improves installation stability and applicability, reduces production costs, and ensures the stability and lifespan of the fingerboard.
Smart Images
Figure CN224595241U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of auxiliary devices for stringed musical instruments, specifically to a guitar chord aid. Background Technology
[0002] The guitar is a chordal instrument that is widely loved. For beginners, on the one hand, prolonged direct contact with the strings can cause fingertip pain; on the other hand, changing chords requires prolonged contact with different strings, making the player very tired. Furthermore, the variety of chords makes it difficult to press the strings flexibly, resulting in poor playing quality. This often leads beginners to give up learning due to the difficulty. To reduce the learning difficulty for beginners, various guitar chord assistive devices have been developed. Refer to the applicant's prior patent applications, such as CN108538272B, CN307671229S, CN210722423U, and CN217933134U.
[0003] For auxiliary devices that are independent of the guitar body, they need to be installed on the guitar neck during use. In order to ensure the accuracy of the pressing position of the string pressing block, the existing structures include those that use a frame to engage with the edge of the neck and then use a constraint device for restraint and fixation, such as CN204808846U and CN108538272A. There are also structures that directly use a clamping structure for limiting and locking, such as CN 217239026 U. However, because the contact area between the auxiliary device and the neck is large, it is easy to cause excessive local stress due to dimensional inaccuracies, resulting in squeezing damage to the neck.
[0004] Most existing guitar aids, considering their use in changing keys, require the aid to be movable and installable along the length of the neck. Since the neck's width gradually increases from the headstock to the body, the mounting structure of the aid typically needs to be much wider than the neck. Furthermore, its fixing mechanism requires an additional structure for adjustment along the width. However, in practice, most consumers do not use the aid in changing keys. This design requirement complicates the mounting structure and reduces installation reliability.
[0005] In most common guitar chords, the nut is a flat surface parallel to the guitar surface. However, the height of the nut above the fretboard varies depending on the guitar's size, resulting in different string heights. When pressing the nut, on some guitars, the pressing block on the nut may contact the string before the nut is fully depressed, while on others, pressing the nut all the way down may not achieve the correct fretting. To solve this problem, one approach is to create chord supports of varying heights. Since guitars vary in size... The more types there are, the more varieties are needed. Producing multiple varieties makes mass production difficult, increases production costs and the risk of product backlog. In addition, the tall auxiliary support also makes the product appear bulky. Another approach is to keep the height of the auxiliary support constant and use an angle-adjustable support to tilt the elastic plate upwards to accommodate guitars with high strings, as in CN210722418U, which was previously filed. Because the cantilever distance of the elastic plate is long, the elastic plate is prone to deformation after a period of use, affecting the performance. Furthermore, the stability of the tilted installation of the finger pick is poor, and frequent replacement or adjustment of the finger pick will cause inconsistencies in performance. Utility Model Content
[0006] In view of this, this application provides a guitar chord aid to solve the technical problems of existing aids that are prone to causing squeezing damage to guitars due to excessive local force and are not well applicable to guitars of different specifications.
[0007] To achieve the above objectives, this utility model provides the following technical solution: A guitar chord aid includes a soundboard frame, a limiting block on the back of the soundboard frame, and a corner groove on the limiting block for engaging and limiting. The corner groove causes the limiting block to be partially missing, forming a first blocking surface facing the front of the guitar neck and a second blocking surface facing the side of the guitar neck. At the same time, the soundboard frame is provided with a binding structure that hugs the guitar neck.
[0008] Furthermore, the limiting blocks are arranged in pairs, and there are at least two pairs. In one pair of limiting blocks, the two limiting blocks are respectively located on the outer sides of the two sides of the neck at the same axial position of the soundboard frame, and the width defined by the pair of limiting blocks biased towards the headstock side is smaller than the width defined by the pair of limiting blocks biased towards the soundbox side.
[0009] Furthermore, the lower surface of the panel frame has a door-shaped through groove that runs along the length of the string, and a limiting block is set on the inner side of the through groove.
[0010] Furthermore, the limiting block is a plate-shaped structure that is vertically arranged relative to the inner wall of the through groove.
[0011] Furthermore, the inner wall of the through groove is also provided with support ribs spaced apart on the side of the limiting block, and the support ribs have a support surface facing the front of the guitar neck.
[0012] Furthermore, the restraint structure is a limiting arm hinged to one side of the panel frame, and a torsion spring is provided on the hinge axis of the limiting arm.
[0013] Furthermore, the panel frame is equipped with a cantilevered, upturned fret, which has buttons and string pressing blocks.
[0014] Furthermore, the clasp includes a fixed part parallel to the mounting plane of the panel frame and an elastic piece connected to the fixed part at one end. The key and string pressing block are arranged perpendicularly to each other on the upturned part of the elastic piece.
[0015] Furthermore, the elastic sheet also includes a straight portion parallel to the fixing portion, with its two ends connected to the fixing portion and the upturned portion, respectively.
[0016] Furthermore, the upward angle of the upturned part is 2°.
[0017] Furthermore, the side of the string pressing block is provided with a linkage pressing plate parallel to the upward part.
[0018] As can be seen from the above technical solution, the advantages of this utility model are: 1. In this utility model, by using the corner grooves on multiple limiting blocks for limiting, large-area contact can be avoided, ensuring stable installation and preventing excessive local force that could cause damage to the guitar. At the same time, it can prevent the auxiliary device from swinging left and right, making the positioning reliable.
[0019] 2. The supporting stiffeners work together with the limiting blocks to achieve the supporting function, improve the supporting strength, and prevent the limiting blocks from deforming and affecting the installation stability.
[0020] 3. The fixing structure of the finger rest of this utility model makes the installation of the finger rest convenient and stable. The end of the elastic piece is partially upturned, which can meet the needs of guitars with high strings. At the same time, the partial upturn makes the structure of the elastic piece stable and not easy to deform, thus allowing the end of the elastic piece to meet a stable upturned state.
[0021] 4. With the end height remaining constant, the shorter the upturn length and the larger the upturn angle, the easier it is to control the upturn angle during processing. Attached Figure Description
[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0023] Figure 1 This is a schematic diagram of the installation structure for use in this application.
[0024] Figure 2 This is a schematic diagram of the combined frame structure of the panel frame and the limiting arm of this application.
[0025] Figure 3 This is a structural schematic diagram of the panel frame of this application.
[0026] Figure 4 For the purposes of this application Figure 3 Enlarged schematic diagram of the structure at point A in the diagram.
[0027] Figure 5 This is a schematic diagram illustrating the installation and use of the framework of this application.
[0028] Figure 6 This is a schematic diagram of the structure of the fretting bar in this application. Figure 1 .
[0029] Figure 7 This is a schematic diagram of the structure of the fretting bar in this application. Figure 2 .
[0030] Figure 8 This is a schematic diagram of the structure of the fretting bar in this application. Figure 3 .
[0031] Explanation of reference numerals in the attached drawings: 1-Panel frame; 11-Panel; 111-Hollow hole; 12-Side plate; 13-Limiting block; 131-Corner groove; 14-Supporting rib; 15-Ear plate; 2-Limiting arm; 1-String pressing plate; 31-Fixing part; 32-Elastic plate; 321-Straight part; 322-Upturned part; 323-String pressing block; 324-Linkage pressing plate; 33-Button. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit it.
[0033] refer to Figures 1 to 8 ,like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this embodiment provides a guitar chord aid, including a soundboard frame 1. To avoid excessive localized force causing damage to the guitar when the soundboard frame 1 contacts the guitar neck over a large area, and to address the problem of the aid being large and heavy due to the thickness of the soundboard frame 1, a limiting block 13 is provided on the back of the soundboard frame 1. The limiting block 13 has a notch 131 for engaging and limiting with the edge of the guitar neck. The notch 131 causes the limiting block 13 to be partially missing, forming a first blocking surface facing the front of the guitar neck and a second blocking surface facing the side of the guitar neck. At the same time, the soundboard frame 1 has a binding structure that hugs the guitar neck. The soundboard frame 1 and the binding structure together form a frame structure. During installation, the soundboard frame 1 is pressed against the guitar neck, and the binding structure is used to hug the guitar neck, thereby fixing and limiting the aid, ensuring that the aid can be reliably and stably installed on the guitar neck. By using the corner groove 131 to engage with the edge of the neck for limiting, the auxiliary device can be prevented from moving or swinging left or right along the width of the neck, ensuring stable installation. The multi-point limiting method can not only limit the device but also avoid defects caused by large-area contact and uneven force.
[0034] In this invention, the restraint structure can be in the form of an elastic strap or a rigid arm with elastic hinges.
[0035] Preferably, the restraint structure in this utility model is a limiting arm 2 hinged to one side of the panel frame 1. The limiting arm 2 is hinged to the ear plate 15 located on the side of the panel frame 1 by a torsion spring, forming a rigid arm with elastic hinge. This design makes it more convenient to operate the limiting arm 2 during the disassembly and assembly of the auxiliary device, thereby making the installation process of the auxiliary device easier.
[0036] In this invention, two limiting arms 2 are provided, each close to the corresponding end of the panel frame 1. By pressing the two ends of the panel frame 1, the position of the panel frame 1 can be stabilized. Preferably, the limiting arms 2 are located on the side closer to the human body, so they can be hidden during use, further improving the aesthetics. If necessary, the limiting arms 2 can also be arranged opposite each other on both sides, similar to the shape of two hands clasped together.
[0037] Preferably, in this application, the limiting blocks 13 are arranged in pairs, and there are at least two pairs. In a pair of limiting blocks 13, the two limiting blocks 13 are respectively located on the outer sides of the two sides of the neck at the same axial position of the panel frame 1, and the width defined by the pair of limiting blocks 13 biased towards the headstock side is smaller than the width defined by the pair of limiting blocks 13 biased towards the body side. When two pairs of limiting blocks 13 are used, a four-corner support is formed. Utilizing the principle of four-corner support, the pressure is distributed in a four-corner manner, evenly distributed on the limiting blocks 13. This pressure distribution can prevent excessive local stress from causing neck deformation.
[0038] The panel frame 1 includes a panel 11 and two side plates 12 perpendicular to the panel 11. A door-shaped through slot with an opening facing downward and extending along the length of the strings is formed between the panel 11 and the two side plates 12. A limiting block 13 is set on the inner side of the through slot and its height is greater than the depth of the through slot. The side plates 12 can hide the strings, making the auxiliary device look beautiful. The height of the limiting block 13 is greater than the depth of the through slot, which can reduce the height of the side plates 12, making the auxiliary device small, exquisite, and lightweight, while also saving materials.
[0039] In this invention, the limiting block 13 is a plate-shaped structure vertically arranged relative to the inner wall of the through groove. This allows the limiting block 13 to be cut and processed using sheet metal, simplifying manufacturing, providing good concealment, and resulting in an aesthetically pleasing structure.
[0040] Furthermore, the string pressing plate 3 includes a fixed part 31 parallel to the mounting plane of the panel frame 1 and an elastic plate 32 connected to the fixed part 31 at one end. The key 33 and the string pressing block 323 are arranged perpendicularly to each other on the upturned part 322 of the elastic plate 32.
[0041] Furthermore, the elastic sheet 32 also includes a straight portion 321 parallel to the fixing portion 31, with both ends of the straight portion 321 connected to the fixing portion 31 and the upturned portion 322, respectively.
[0042] Furthermore, the upward angle of the upturned part 322 is 2°.
[0043] Furthermore, the side of the string pressing block 323 is provided with a linkage pressing plate 324 parallel to the upturned part 322.
[0044] The panel frame 1 is equipped with a string presser 3, and the panel frame 1 has a perforated hole 111 through which the string pressing block 323 of the string presser 3 passes. In this invention, the finger rest 3 is fixed by screws, which facilitates replacement and adjustment of the combination and can meet the needs of more chord playing.
[0045] In this invention, the inner wall of the through groove is also provided with supporting ribs 14 spaced apart from the side of the limiting block 13. The supporting ribs 14 have a supporting surface facing the front of the guitar neck. After installation, the supporting ribs 14 press against the upper surface of the guitar neck and work together with the limiting block 13. They are evenly distributed on the limiting block 13 and the supporting ribs 14, reducing the supporting force acting on the limiting block 13, making the limiting block 13 less prone to deformation, and ensuring good installation stability of the auxiliary device.
[0046] like Figure 6 , Figure 7 and Figure 8As shown, the auxiliary device also includes a fingerboard 3 mounted on the panel frame 1. The fingerboard 3 has a button 33 and a string pressing block 323. To accommodate guitars with high strings, the cantilever end of the fingerboard 3 is tilted upwards. This self-adjusting tilted structure makes the fingerboard 3 structurally stable and less prone to deformation, thus ensuring that the end of the fingerboard 3 can maintain a stable tilted state.
[0047] In this invention, the finger rest 3 includes a fixing part 31 parallel to the mounting plane of the panel frame 1 and an elastic piece 32 connected to the fixing part 31 at one end. The elastic piece 32 is made of high-elasticity, high-strength spring steel. The fixing part 31 allows the finger rest 3 to maintain its original mounting method, ensuring the stability of the mounting structure. The distal end of the elastic piece 32 is in an upward-curving state. The key 33 and the string pressing block 323 are mounted on the elastic piece 32 and perpendicular to the upward-curving part 322. The raised design increases the height of the string pressing block 323 in the reset state, thus meeting the needs of high-string guitars. The vertical arrangement of the string pressing block 323 relative to the raised part 322 allows the raised part 322 to make surface-line contact with the string after pressing, avoiding the string bending and deformation caused by line-line contact. The button 33 is perpendicular to the raised part 322, and the string pressing block 323 is parallel to the button 33. When the string is pressed, the pressure is perpendicular to the string, making the string pressing reliable and effortless.
[0048] In this invention, the elastic sheet 32 can be tilted upwards relative to the fixed part 31. The cantilever is too long, and the end is prone to automatic deformation due to excessive weight, which affects the structural reliability after long-term use.
[0049] Preferably, the elastic sheet 32 further includes a straight portion 321 parallel to the fixing portion 31, with its two ends connected to the fixing portion 31 and the upturned portion 322, respectively. The straight portion 321 and the upturned portion 322 divide the elastic sheet 32 into a two-section structure. The straight portion 321 serves as a basic support or force transmission part, resulting in good structural stability of the elastic sheet 32. The elastic sheet 32 adopts a locally upturned design, which can meet the usage requirements of high-string guitars. At the same time, the locally upturned design makes the structure of the elastic sheet 32 stable and not easily deformed. This allows the end of the elastic sheet 32 to maintain a stable upturned state, resulting in high durability. Furthermore, with the end height remaining constant, the shorter the length of the upturned portion 322 and the larger the upturned angle of the upturned portion 322, the easier it is to control the upturned angle of the upturned portion 322 during processing.
[0050] In this invention, preferably, the upward angle of the upturned portion 322 relative to the plane where the straight portion 321 is located is 2°, which results in good structural stability.
[0051] In this invention, the side of the string pressing block 323 is provided with a linkage pressing plate 324 parallel to the upward-curving part 322. By using the linkage pressing plate 324 in conjunction, the function of pressing multiple strings with one key can be realized, which improves the playing efficiency and reduces the difficulty of playing.
[0052] In this invention, the fixing part 31, the elastic sheet 32, the string pressing block 323, and the linkage pressing plate 324 are formed into an integrated structure through a molding process. This ensures good structural stability of the string pressing plate 3.
[0053] In practical use, this application can also be used in conjunction with the existing fingerboard 3 to meet the needs of guitars with low string counts.
[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to the embodiments of this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A guitar chord aid, characterized in that, The instrument includes a panel frame (1), and a limiting block (13) is provided on the back of the panel frame (1). The limiting block (13) is provided with a corner groove (131) for locking and limiting. The corner groove (131) causes the limiting block (13) to be partially missing and forms a first blocking surface facing the front of the guitar neck and a second blocking surface facing the side of the guitar neck. At the same time, the panel frame (1) is provided with a binding structure that hugs the guitar neck.
2. The guitar chord aid according to claim 1, characterized in that, The limiting blocks (13) are arranged in pairs, and there are at least two pairs. In one pair of limiting blocks (13), the two limiting blocks (13) are respectively arranged on the outer sides of the two sides of the neck at the same axial position of the panel frame (1), and the width defined by the pair of limiting blocks (13) biased towards the headstock side is smaller than the width defined by the pair of limiting blocks (13) biased towards the body side.
3. The guitar chord aid according to claim 1 or 2, characterized in that, The lower surface of the panel frame (1) has a door-shaped through groove that runs along the length of the string, and the limiting block (13) is disposed on the inner side of the through groove.
4. The guitar chord aid according to claim 2, characterized in that, The limiting block (13) is a plate-shaped structure that is vertically arranged relative to the inner wall of the through groove.
5. The guitar chord aid according to claim 3, characterized in that, The inner wall of the through groove is also provided with a support rib plate (14) spaced apart from the side of the limiting block (13), and the support rib plate (14) has a support surface facing the front of the guitar neck.
6. The guitar chord aid according to claim 1, characterized in that, The restraint structure is a limiting arm (2) hinged to one side of the panel frame (1), and a torsion spring is provided on the hinge shaft of the limiting arm (2).
7. The guitar chord aid according to claim 1, characterized in that, The panel frame (1) is provided with a cantilevered, upturned finger press (3), and the finger press (3) is provided with a key (33) and a string pressing block (323).
8. The guitar chord aid according to claim 7, characterized in that, The string pressing plate (3) includes a fixed part (31) parallel to the mounting plane of the panel frame (1) and an elastic plate (32) connected to the fixed part (31) at one end. The key (33) and the string pressing block (323) are arranged vertically on the upturned part (322) of the elastic plate (32).
9. The guitar chord aid according to claim 8, characterized in that, The elastic sheet (32) also includes a straight portion (321) parallel to the fixing portion (31), and the two ends of the straight portion (321) are connected to the fixing portion (31) and the upturned portion (322) respectively.
10. The guitar chord aid according to claim 8, characterized in that, The upward angle of the upturned portion (322) is 2°.
11. The guitar chord aid according to claim 8, characterized in that, The string pressing block (323) has a linkage pressing plate (324) on its side that is parallel to the upturned part (322).