String

Abstract

A string comprises a core wire and a winding wire spirally wound outside the core wire, the section of the winding wire is in a segment shape, the winding wire comprises a plane on one side and a cambered surface on the other side, and the winding wire is integrally formed by forming equipment; one side of the winding plane is tightly attached to the surface of the core wire, and one side of the winding cambered surface faces outwards. The principle of the utility model is as follows: the inward side of the winding string is the plane, and the contact area between the plane and the core wire is larger, so that the friction force between the winding wire and the core wire is increased, the adhesive force of the winding wire is stronger, the winding wire is not easy to loosen, and the timbre of the string can be kept unchanged for a long time.

Description

Technical Field

[0001] This utility model relates to musical instrument accessories, and in particular to a string. Background Technology

[0002] A musical string typically consists of a core wire and a spiral wound around it. For example, Chinese Patent Publication No. CN110517651A describes a musical string and its manufacturing method, which includes a string core and a spiral wound around it. The spiral wound comprises copper wire, a silver-plated layer covering the surface of the copper wire, and a protective layer covering the silver-plated layer. The protective layer is composed of a mixture of paint and metal powder. The spiral wound has a standard circular cross-sectional area, resulting in a small contact area between the spiral wound and the string core. This means the adhesion of the spiral wound is relatively weak, and after a period of use, the spiral wound is prone to loosening, leading to changes in the string's tone and affecting the playing experience. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a string that solves the technical problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a string, comprising a core wire and a spiral wound wire wound around the core wire. The cross-section of the spiral wound wire is circular, including a flat surface on one side and an arc surface on the other side. The spiral wound wire is integrally formed by a forming device. The flat side of the spiral wound wire is in close contact with the surface of the core wire, and the arc surface side of the spiral wound wire faces outward. The principle of this utility model is that because the inward-facing side of the spiral wound wire is flat, the contact area between the flat surface and the core wire is larger, resulting in greater friction between the spiral wound wire and the core wire, stronger adhesion of the spiral wound wire, and less slackening of the spiral wound wire, allowing the string to maintain its tone unchanged over a long period.

[0005] As an improvement, the distance from the midpoint of the outer side of the winding thread to the center of the winding thread circle is greater than the distance from the midpoint of the inner side of the winding thread circle to the center of the winding thread circle.

[0006] As an improvement, the cross-section of the wound thread is semi-circular.

[0007] The beneficial effects of this utility model compared with the prior art are:

[0008] Because the inner side of the wound string is flat, the contact area between the flat surface and the core wire is larger, which increases the friction between the wound wire and the core wire, strengthens the adhesion of the wound wire, makes it less likely for the wound wire to loosen, and allows the string to maintain its tone for a long time. Attached Figure Description

[0009] Figure 1 This is a diagram of the strings.

[0010] Figure 2 This is a schematic diagram of the cross-section of the wound wire.

[0011] Figure 3 This is a partial sectional view of the strings. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figures 1 to 3 As shown, a string includes a core wire 2 and a spiral wound wire 1 wound around the core wire 2. The core wire 2 is a hexagonal steel core. The cross-section of the spiral wound wire 1 is circular, including a flat surface 11 on one side and an arc surface 12 on the other side. In this embodiment, the cross-section of the spiral wound wire 1 is semi-circular, and the spiral wound wire 1 is more tightly wound. The spiral wound wire 1 is integrally formed by a forming device. The flat surface 11 of the spiral wound wire 1 is formed by a mold, saving the flat surface 11 that previously had to be formed by grinding, making the manufacturing process simpler and the manufacturing cost lower. After the spiral wound wire 1 is wound around the core wire 2, one side of the flat surface 11 of the spiral wound wire 1 is in close contact with the surface of the core wire 2, and the arc surface 12 side of the spiral wound wire 1 faces outward. The distance from the midpoint of the outer side of the spiral wound wire 1 to the center of the spiral wound wire 1 is greater than the distance from the midpoint of the inner side of the spiral wound wire 1 to the center of the spiral wound wire 1.

[0014] The principle of this invention is as follows: Since the inner side of the wound string is a plane 11, the contact area between the plane 11 and the core wire 2 is larger, which increases the friction between the wound string 1 and the core wire 2, strengthens the adhesion of the wound string 1, makes the wound string 1 less prone to loosening, and allows the string to maintain its tone for a long time.

Claims

1. A string, comprising a core wire and a winding thread spirally wound around the core wire, characterized in that: The cross-section of the winding thread is circular, including a flat surface on one side and an arc surface on the other side. The winding thread is integrally formed by a forming device. The flat side of the winding thread is in close contact with the surface of the core wire, and the arc surface side of the winding thread faces outward.

2. The string according to claim 1, characterized in that: The distance from the midpoint of the outer side of the winding thread to the center of the winding thread circle is greater than the distance from the midpoint of the inner side of the winding thread circle to the center of the winding thread circle.

3. A string according to claim 1, characterized in that: The cross-section of the wound thread is semi-circular.

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