Arch bridge type supporting structure for guitar or ukulele
By introducing an arch-bridge support structure into guitars and ukuleles, and using a suspended arch-bridge support plate and soundhole auxiliary fixing ring to share the string tension, the problems of bulging and cracking of the soundbox top are solved, improving sound quality and ease of adjustment.
Patent Information
- Application Number
- CN202520198271.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-08
AI Technical Summary
The soundboards of existing guitars and ukuleles are prone to bulging and cracking under prolonged string tension, resulting in poor sound quality and difficulty in adjusting string spacing.
It adopts an arch bridge support structure, including a neck connecting bracket, an arch bridge support frame, a bridge, and a tailpiece. The string tension is jointly borne by the suspended arch bridge support plate and the soundhole auxiliary fixing ring, reducing the direct tension on the soundbox top.
It effectively prevents the soundboard from bulging and cracking, improves sound quality, simplifies string spacing adjustment, and enhances structural stability.
Smart Images

Figure CN223871218U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of musical instrument manufacturing technology, and in particular to an arch-bridge support structure for guitars or ukuleles. Background Technology
[0002] Guitars, ukuleles, and other similar wooden stringed instruments mostly consist of important components such as the headstock, neck, body, tailpiece, and strings. The headstock, neck, and tailpiece primarily function to tension the strings. The tailpiece is fixed to the top of the body, and multiple strings connect the headstock, neck, and tailpiece. When the strings are tensioned, they exert approximately 80 kilograms of tension on the tailpiece, which then transmits this tension to the top of the body. Prolonged string tension can easily cause problems such as bulging and cracking of the body, neck deformation, and increased string spacing, leading to a deterioration or damage to the instrument's tone. Therefore, it is necessary to provide an arched support structure for guitars or ukuleles to address these issues. Summary of the Invention
[0003] To address the aforementioned technical problems, this invention provides an arch-bridge support structure for guitars or ukuleles. This support structure completely solves the problem of bulging and cracking at the joint between the soundboard and the tailpiece caused by string tension. It offers advantages such as structural stability, reduced number of soundboard braces, improved soundboard volume and tone, and easy adjustment of string spacing to the optimal setting.
[0004] This utility model adopts the following technical solution: an arch bridge support structure for guitars or ukuleles, characterized in that it includes a neck connecting bracket, an arch bridge support frame, a bridge, and a tailpiece. The neck connecting bracket is located on the upper part of the guitar body and is fixedly connected to the neck. The bridge is located on the outside of the guitar body's top panel. The arch bridge support frame connects the bridge and the neck connecting bracket. The tailpiece is located on the outside of the bridge. The arch bridge support frame includes a transition plate, a suspended arch bridge support plate, and an auxiliary fixing ring for the guitar body's soundhole. The transition plate is connected to the neck connecting bracket. Next, the suspended arch bridge support plate and the sound hole auxiliary fixing ring are respectively installed on the inner or outer side of the sound hole of the piano body and fixedly connected by rivets. The bottom end of the suspended arch bridge support plate is connected to the piano bridge. The suspended arch bridge support plate has an arched bend in the middle and lower part. The arched bend makes the suspended arch bridge support plate between the sound hole of the piano body and the piano bridge suspended and not in contact with the piano body panel. The adapter plate, the suspended arch bridge support plate, and the piano body sound hole auxiliary fixing ring are combined into one to form an arch bridge support frame. The arch bridge support frame and the piano body panel jointly bear the tension transmitted by the strings.
[0005] Furthermore, the suspended arch bridge support plate is located inside or outside the sound hole of the piano body. When the suspended arch bridge support plate is located outside the sound hole of the piano body, the auxiliary fixing ring for the sound hole is located inside the sound hole of the piano body, the auxiliary fixing ring for the sound hole of the piano body is connected to the adapter plate, and the bottom end of the suspended arch bridge support plate is connected to the piano bridge. When the suspended arch bridge support plate is located inside the sound hole of the piano body, the auxiliary fixing ring for the sound hole of the piano body is located outside the sound hole of the piano body, the upper end of the suspended arch bridge support plate is connected to the adapter plate, and the bottom end is connected to the piano bridge.
[0006] Furthermore, the arch bridge support frame and the neck connecting bracket are made of metal or carbon fiber.
[0007] Furthermore, the drawbar is equipped with adjustable drawbars in height and length.
[0008] This utility model has the following beneficial effects:
[0009] This invention adds an arch support frame between the neck and the bridge. The arch support frame bears the tension of the strings transmitted to the bridge, reducing the tension of the strings transmitted to the soundboard. This avoids problems such as bulging and cracking of the soundboard and increased string spacing between the strings and the fingerboard that are difficult to adjust due to string tension.
[0010] The height-adjustable bridge of this invention, in conjunction with the arch bridge support frame, can effectively ensure that the string spacing between the strings and the fingerboard is always within a reasonable range. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the cross-sectional structure of the suspended arch bridge support plate of this utility model when it is located outside the sound hole of the piano box.
[0012] Figure 2 This is a schematic diagram of the cross-sectional structure of the suspended arch bridge support plate of this utility model when it is located inside the sound hole of the piano box.
[0013] Figure 3 This is a front view of the support plate of the suspended arch bridge.
[0014] Figure 4 Front view of the auxiliary retaining ring for the sound hole of the instrument body.
[0015] Figure 5 This is a side view of the support plate of a suspended arch bridge.
[0016] Figure 6 Side view of the auxiliary fixing ring for the sound hole of the instrument body.
[0017] Figure 7 A schematic diagram showing the connection between the auxiliary fixing ring for the sound hole of the guitar body and the adapter plate when the ring is located inside the sound hole of the guitar body.
[0018] Figure 8This is a schematic diagram showing the connection between the suspended arch bridge support plate and the adapter plate when the support plate is located inside the sound hole of the piano body.
[0019] The corresponding component names in the picture are: 1. Neck connecting bracket; 2. Adapter plate; 3. Bridge; 4. Tailboard; 5. Body; 6. Neck; 7. Floating arch bridge support plate; 8. Auxiliary fixing ring for soundhole of body; 9. Arched bend. Detailed Implementation
[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific implementation methods, structures, and features of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments. However, the accompanying drawings are for reference and illustration only and are not intended to limit this utility model.
[0021] Example 1: Please refer to Figure 1-8 As shown, this utility model provides an arched bridge support structure for guitars or ukuleles, including a neck connecting bracket 1, an arched bridge support frame, a bridge 3, and a tailpiece 4. The neck connecting bracket 1 is located on the upper part of the guitar body 5 and is fixedly connected to the neck 6. The bridge 3 is located on the outer side of the top panel of the guitar body 5. The arched bridge support frame connects the bridge 3 and the neck connecting bracket 1. The tailpiece 4 is located on the outer side of the bridge 3. The arched bridge support frame includes an adapter plate 2, a suspended arched bridge support plate 7, and an auxiliary fixing ring for the soundhole of the guitar body 8. The adapter plate 2 is connected to the neck connecting bracket 1. The suspended arch bridge support plate 7 and the sound hole auxiliary fixing ring 8 are respectively installed on the inner or outer side of the sound hole of the piano body and fixedly connected by rivets. The bottom end of the suspended arch bridge support plate 7 is connected to the piano bridge 3. The suspended arch bridge support plate 7 has an arched bend 9 in the middle and lower part. The arched bend makes the suspended arch bridge support plate between the sound hole of the piano body and the piano bridge suspended and not in contact with the piano body panel. The adapter plate 2, the suspended arch bridge support plate 7, and the piano body sound hole auxiliary fixing ring 8 are combined into one to form an arch bridge support frame. The arch bridge support frame and the piano body panel jointly bear the tension transmitted by the strings.
[0022] In a specific implementation of this invention, the suspended arch bridge support plate can be located inside or outside the sound hole of the piano body. The sound hole auxiliary fixing ring 8 cooperates with the suspended arch bridge support plate 7 to clamp the piano body panel around the sound hole in the middle, and is fixedly connected by rivets. When the suspended arch bridge support plate is located outside the sound hole of the piano body, the sound hole auxiliary fixing ring is located inside the sound hole of the piano body, and the sound hole auxiliary fixing ring is connected to the adapter plate. The bottom end of the suspended arch bridge support plate is connected to the bridge. At this time, an inner beam is set inside the piano body facing the bridge to fix the bridge and the bottom end of the suspended arch bridge support plate. When the suspended arch bridge support plate is located inside the sound hole of the piano body, the sound hole auxiliary fixing ring is located outside the sound hole of the piano body. The upper end of the suspended arch bridge support plate is connected to the adapter plate, and the bottom end is connected to the bridge. At this time, the bottom end of the suspended arch bridge support plate is connected to the outer bridge by bolts passing through the piano body panel. The adapter plate 2 can be connected to the neck connecting bracket 1 by bolts. The arch bridge support frame and the neck connecting bracket are made of metal or carbon fiber. The tailpiece has adjustable bridges in height and length. The upper end of the suspended arch bridge support plate 7 has a circular hole to accommodate the sound hole of the instrument body. The inner hole of the sound hole auxiliary fixing ring 8 is the same size as the sound hole of the instrument body. To accommodate the shape of the instrument body, the circular hole at the upper end of the sound hole auxiliary fixing ring 8 and the suspended arch bridge support plate 7 can be cut with clearance notches.
[0023] The above-described embodiments are provided to enable those skilled in the art to implement or use this invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An arch-shaped support structure for guitars or ukuleles, characterized in that: The instrument includes a neck connecting bracket, an arch bridge support frame, a bridge, and a tailpiece. The neck connecting bracket is located on the upper part of the instrument body and is fixedly connected to the neck. The bridge is located on the outside of the instrument body's top panel. The arch bridge support frame connects the bridge and the neck connecting bracket. The tailpiece is located on the outside of the bridge. The arch bridge support frame includes a transition plate, a suspended arch bridge support plate, and an auxiliary fixing ring for the soundholes of the instrument body. The transition plate is connected to the neck connecting bracket. The suspended arch bridge support plate and the auxiliary fixing ring for the soundholes are respectively installed on the inside or outside of the soundholes of the instrument body and fixedly connected by rivets. The bottom end of the suspended arch bridge support plate is connected to the bridge. The suspended arch bridge support plate has an arched bend in the lower middle part. The arched bend makes the suspended arch bridge support plate between the soundholes of the instrument body and the bridge suspended and not in contact with the instrument body's top panel. The transition plate, the suspended arch bridge support plate, and the auxiliary fixing ring for the soundholes of the instrument body are combined into one unit to form the arch bridge support frame. The arch bridge support frame and the instrument body's top panel jointly bear the tension transmitted by the strings.
2. The arch-shaped support structure for guitars or ukuleles according to claim 1, characterized in that: The suspended arch bridge support plate is located inside or outside the sound hole of the piano body. When the suspended arch bridge support plate is located outside the sound hole of the piano body, the auxiliary fixing ring of the sound hole is located inside the sound hole of the piano body and is connected to the adapter plate. The bottom end of the suspended arch bridge support plate is connected to the piano bridge. When the suspended arch bridge support plate is located inside the sound hole of the piano body, the auxiliary fixing ring of the sound hole is located outside the sound hole of the piano body. The upper end of the suspended arch bridge support plate is connected to the adapter plate and the bottom end is connected to the piano bridge.
3. The arch-shaped support structure for guitars or ukuleles according to claim 1, characterized in that: The arch bridge support frame and the neck connecting bracket are made of metal or carbon fiber.
4. The arch-shaped support structure for guitars or ukuleles according to claim 1, characterized in that: The drawbar is equipped with height-adjustable string blocks.